diff options
Diffstat (limited to 'lib/libc')
419 files changed, 16626 insertions, 0 deletions
diff --git a/lib/libc/Kbuild b/lib/libc/Kbuild new file mode 100644 index 00000000..dc0538a6 --- /dev/null +++ b/lib/libc/Kbuild @@ -0,0 +1,44 @@ +lib-y := libc.a + +cflags-y += -I $(src)/include + +obj-y += arch/ +obj-y += arpa/ +obj-y += assert/ +obj-y += ctype/ +obj-y += devctl/ +obj-y += dirent/ +obj-y += endian/ +obj-y += errno/ +obj-y += fcntl/ +obj-y += grp/ +obj-y += inttypes/ +obj-y += libgen/ +obj-y += mman/ +obj-y += monetary/ +obj-y += msg/ +obj-y += poll/ +obj-y += pwd/ +obj-y += select/ +obj-y += sem/ +obj-y += setjmp/ +obj-y += signal/ +obj-y += socket/ +obj-y += stat/ +obj-y += statvfs/ +obj-y += stdio/ +obj-y += stdlib/ +obj-y += string/ +obj-y += strings/ +obj-y += sys/ +obj-y += syslog/ +obj-y += termios/ +obj-y += thread/ +obj-y += time/ +obj-y += times/ +obj-y += uio/ +obj-y += unistd/ +obj-y += utsname/ +obj-y += wait/ +obj-y += wchar/ +obj-y += wctype/ diff --git a/lib/libc/arch/Kbuild b/lib/libc/arch/Kbuild new file mode 100644 index 00000000..ad3a7486 --- /dev/null +++ b/lib/libc/arch/Kbuild @@ -0,0 +1 @@ +obj-y += $(ARCH)/ diff --git a/lib/libc/arch/x86_64/Kbuild b/lib/libc/arch/x86_64/Kbuild new file mode 100644 index 00000000..fc8a2d3f --- /dev/null +++ b/lib/libc/arch/x86_64/Kbuild @@ -0,0 +1,7 @@ +obj-y += clock_gettime.o +obj-y += crt0.o +obj-y += fenv.o +obj-y += longjmp.o +obj-y += setjmp.o +obj-y += sigsetjmp.o +obj-y += vdso_setup.o diff --git a/lib/libc/arch/x86_64/clock_gettime.c b/lib/libc/arch/x86_64/clock_gettime.c new file mode 100644 index 00000000..6a7a3874 --- /dev/null +++ b/lib/libc/arch/x86_64/clock_gettime.c @@ -0,0 +1,13 @@ +#include <asm/vdso.h> +#include <syscall.h> +#include <time.h> + +int clock_gettime(clockid_t clock_id, struct timespec *tp) +{ +#if defined(__x86_64__) + if (__vdso_clock_gettime) + return __vdso_clock_gettime(clock_id, tp); +#endif + + return syscall(clock_gettime, clock_id, tp); +} diff --git a/lib/libc/arch/x86_64/crt0.c b/lib/libc/arch/x86_64/crt0.c new file mode 100644 index 00000000..2c7943ff --- /dev/null +++ b/lib/libc/arch/x86_64/crt0.c @@ -0,0 +1,59 @@ +#include <linux/auxvec.h> +#include <linux/elf.h> +#include <stdint.h> +#include <stdlib.h> +#include <sys/time.h> +#include <thread.h> +#include <unistd.h> + +#define weak_reference(old, new) \ + extern __typeof(old) new __attribute__((__weak__, __alias__(#old))) + +extern int main(int, char *[]); +char **environ; + +static struct __thread_self thread = { .tid = 0, ._errno = 0 }; + +struct __attribute__((packed)) auxv_t { + uintptr_t a_type; + uintptr_t a_val; +} *__auxv; + +static void __vdso_setup(Elf64_Ehdr *vdso_addr __attribute__((unused))) +{ +} + +weak_reference(__vdso_setup, vdso_setup); + +__attribute__((used)) void __libc_start(uintptr_t *sp) +{ + char **argv; + int argc; + + argc = (int)(*sp); + argv = (char **)(++sp); + sp += argc; + environ = (char **)(++sp); + + while (*sp) + sp++; + + __auxv = (struct auxv_t *)(++sp); + while (__auxv->a_type != AT_NULL) { + if (__auxv->a_type == AT_SYSINFO_EHDR) { + vdso_setup((Elf64_Ehdr *)__auxv->a_val); + } + + __auxv++; + } + + __asm__ volatile("wrfsbase %0" ::"r"(thread)); + + exit(main(argc, argv)); +} + +__attribute__((noreturn, naked)) void _start(void) +{ + __asm__ __volatile__("mov %rsp, %rdi\n" + "call __libc_start\n"); +} diff --git a/lib/libc/arch/x86_64/fenv.s b/lib/libc/arch/x86_64/fenv.s new file mode 100644 index 00000000..b9a46581 --- /dev/null +++ b/lib/libc/arch/x86_64/fenv.s @@ -0,0 +1,97 @@ +.global feclearexcept +.type feclearexcept,@function +feclearexcept: + mov %edi,%ecx + and $0x3f,%ecx + fnstsw %ax + test %eax,%ecx + jz 1f + fnclex +1: stmxcsr -8(%rsp) + and $0x3f,%eax + or %eax,-8(%rsp) + test %ecx,-8(%rsp) + jz 1f + not %ecx + and %ecx,-8(%rsp) + ldmxcsr -8(%rsp) +1: xor %eax,%eax + ret + +.global feraiseexcept +.type feraiseexcept,@function +feraiseexcept: + and $0x3f,%edi + stmxcsr -8(%rsp) + or %edi,-8(%rsp) + ldmxcsr -8(%rsp) + xor %eax,%eax + ret + +.global __fesetround +.hidden __fesetround +.type __fesetround,@function +__fesetround: + push %rax + xor %eax,%eax + mov %edi,%ecx + fnstcw (%rsp) + andb $0xf3,1(%rsp) + or %ch,1(%rsp) + fldcw (%rsp) + stmxcsr (%rsp) + shl $3,%ch + andb $0x9f,1(%rsp) + or %ch,1(%rsp) + ldmxcsr (%rsp) + pop %rcx + ret + +.global fegetround +.type fegetround,@function +fegetround: + push %rax + stmxcsr (%rsp) + pop %rax + shr $3,%eax + and $0xc00,%eax + ret + +.global fegetenv +.type fegetenv,@function +fegetenv: + xor %eax,%eax + fnstenv (%rdi) + stmxcsr 28(%rdi) + ret + +.global fesetenv +.type fesetenv,@function +fesetenv: + xor %eax,%eax + inc %rdi + jz 1f + fldenv -1(%rdi) + ldmxcsr 27(%rdi) + ret +1: push %rax + push %rax + pushq $0xffff + pushq $0x37f + fldenv (%rsp) + pushq $0x1f80 + ldmxcsr (%rsp) + add $40,%rsp + ret + +.global fetestexcept +.type fetestexcept,@function +fetestexcept: + and $0x3f,%edi + push %rax + stmxcsr (%rsp) + pop %rsi + fnstsw %ax + or %esi,%eax + and %edi,%eax + ret diff --git a/lib/libc/arch/x86_64/longjmp.c b/lib/libc/arch/x86_64/longjmp.c new file mode 100644 index 00000000..6aed69a5 --- /dev/null +++ b/lib/libc/arch/x86_64/longjmp.c @@ -0,0 +1,18 @@ +#include <setjmp.h> + +__attribute__((noreturn, naked, returns_twice)) void longjmp(jmp_buf env, + int val) +{ + __asm__ __volatile__("mov 0(%rdi), %rbx\n" + "mov 8(%rdi), %rbp\n" + "mov 16(%rdi), %r12\n" + "mov 24(%rdi), %r13\n" + "mov 32(%rdi), %r14\n" + "mov 40(%rdi), %r15\n" + "mov 48(%rdi), %rsp\n" + "xor %rax, %rax\n" + "cmp $0, %esi\n" + "setne %al\n" + "mov %eax, %eax\n" + "jmp *56(%rdi)\n"); +} diff --git a/lib/libc/arch/x86_64/setjmp.c b/lib/libc/arch/x86_64/setjmp.c new file mode 100644 index 00000000..d268ae25 --- /dev/null +++ b/lib/libc/arch/x86_64/setjmp.c @@ -0,0 +1,17 @@ +#include <setjmp.h> + +__attribute__((naked, returns_twice)) int setjmp(jmp_buf env) +{ + __asm__ __volatile__("mov %rbx,(%rdi)\n" + "mov %rbp,8(%rdi)\n" + "mov %r12,16(%rdi)\n" + "mov %r13,24(%rdi)\n" + "mov %r14,32(%rdi)\n" + "mov %r15,40(%rdi)\n" + "lea 8(%rsp),%rdx\n" + "mov %rdx,48(%rdi)\n" + "mov (%rsp),%rdx\n" + "mov %rdx,56(%rdi)\n" + "xor %eax,%eax\n" + "ret\n"); +} diff --git a/lib/libc/arch/x86_64/sigsetjmp.c b/lib/libc/arch/x86_64/sigsetjmp.c new file mode 100644 index 00000000..d4c0a4db --- /dev/null +++ b/lib/libc/arch/x86_64/sigsetjmp.c @@ -0,0 +1,33 @@ +#include <setjmp.h> + +int sigsetjmp(sigjmp_buf env, int savemask) +{ + __asm__ __volatile__("movq %%rbx, 0(%0)\n" + "movq %%rbp, 8(%0)\n" + "movq %%r12, 16(%0)\n" + "movq %%r13, 24(%0)\n" + "movq %%r14, 32(%0)\n" + "movq %%r15, 40(%0)\n" + + "leaq 8(%%rsp), %%rax\n" + "movq %%rax, 48(%0)\n" + "movq (%%rsp), %%rax\n" + "movq %%rax, 56(%0)\n" + + "testl %%esi, %%esi\n" + "jz 1f\n" + "movq $2, %%rdi\n" + "movq $0, %%rsi\n" + "leaq 64(%0), %%rdx\n" + "movq $128, %%r10\n" + "movq $14, %%rax\n" + "syscall\n" + + "1:\n" + "xor %%eax, %%eax\n" + : + : "r"(env), "S"(savemask) + : "rax", "rdi", "rdx", "r10", "memory"); + + return 0; +} diff --git a/lib/libc/arch/x86_64/vdso_setup.c b/lib/libc/arch/x86_64/vdso_setup.c new file mode 100644 index 00000000..c410995d --- /dev/null +++ b/lib/libc/arch/x86_64/vdso_setup.c @@ -0,0 +1,62 @@ +#include <linux/auxvec.h> +#include <linux/elf.h> +#include <string.h> +#include <time.h> + +int (*__vdso_clock_gettime)(int, struct timespec *) = NULL; +int (*__vdso_getcpu)(unsigned *, unsigned *, void *) = NULL; +int (*__vdso_time)(long *) = NULL; + +static __inline __attribute__((used)) void vdso_setup(Elf64_Ehdr *vdso_addr) +{ + Elf64_Phdr *phdr = + (Elf64_Phdr *)((char *)vdso_addr + vdso_addr->e_phoff); + + for (int i = 0; i < vdso_addr->e_phnum; i++) { + if (phdr[i].p_type == PT_DYNAMIC) { + Elf64_Dyn *dyn = (Elf64_Dyn *)((char *)vdso_addr + + phdr[i].p_offset); + const char *strtab = NULL; + Elf64_Sym *symtab = NULL; + for (; dyn->d_tag != DT_NULL; dyn++) { + if (dyn->d_tag == DT_STRTAB) { + strtab = (const char *)vdso_addr + + dyn->d_un.d_ptr; + } else if (dyn->d_tag == DT_SYMTAB) { + symtab = + (Elf64_Sym *)((char *)vdso_addr + + dyn->d_un.d_ptr); + } + } + + if (strtab == NULL || symtab == NULL) { + return; + } + + Elf64_Sym *sym = symtab; + while ((char *)sym < (char *)strtab) { + if (sym->st_name != 0 && sym->st_value != 0) { + const char *name = + strtab + sym->st_name; + if (strcmp(name, + "__vdso_clock_gettime") == 0) + __vdso_clock_gettime = + (void *)(vdso_addr + + sym->st_value); + else if (strcmp(name, + "__vdso_getcpu") == 0) + __vdso_getcpu = + (void *)(vdso_addr + + sym->st_value); + else if (strcmp(name, "__vdso_time") == + 0) + __vdso_time = + (void *)(vdso_addr + + sym->st_value); + } + sym = (Elf64_Sym *)((char *)sym + + sizeof(Elf64_Sym)); + } + } + } +} diff --git a/lib/libc/arpa/Kbuild b/lib/libc/arpa/Kbuild new file mode 100644 index 00000000..3714bea3 --- /dev/null +++ b/lib/libc/arpa/Kbuild @@ -0,0 +1,8 @@ +obj-y += htonl.o +obj-y += htons.o +obj-y += inet_addr.o +obj-y += inet_ntoa.o +obj-y += inet_ntop.o +obj-y += inet_pton.o +obj-y += ntohl.o +obj-y += ntohs.o diff --git a/lib/libc/arpa/htonl.c b/lib/libc/arpa/htonl.c new file mode 100644 index 00000000..96f3ba4e --- /dev/null +++ b/lib/libc/arpa/htonl.c @@ -0,0 +1,12 @@ +#include <arpa/inet.h> +#include <byteswap.h> + +uint32_t htonl(uint32_t hostlong) +{ + union { + int i; + char c; + } u = { 1 }; + + return u.c ? bswap32(hostlong) : hostlong; +} diff --git a/lib/libc/arpa/htons.c b/lib/libc/arpa/htons.c new file mode 100644 index 00000000..7c8dcc51 --- /dev/null +++ b/lib/libc/arpa/htons.c @@ -0,0 +1,12 @@ +#include <arpa/inet.h> +#include <byteswap.h> + +uint16_t htons(uint16_t hostshort) +{ + union { + int i; + char c; + } u = { 1 }; + + return u.c ? bswap16(hostshort) : hostshort; +} diff --git a/lib/libc/arpa/inet_addr.c b/lib/libc/arpa/inet_addr.c new file mode 100644 index 00000000..5514e966 --- /dev/null +++ b/lib/libc/arpa/inet_addr.c @@ -0,0 +1,8 @@ +#include <arpa/inet.h> + +in_addr_t inet_addr(const char *cp) +{ + (void)cp; + // TODO + return 0; +} diff --git a/lib/libc/arpa/inet_ntoa.c b/lib/libc/arpa/inet_ntoa.c new file mode 100644 index 00000000..9d4f9b23 --- /dev/null +++ b/lib/libc/arpa/inet_ntoa.c @@ -0,0 +1,8 @@ +#include <arpa/inet.h> + +char *inet_ntoa(struct in_addr in) +{ + (void)in; + // TODO + return 0; +} diff --git a/lib/libc/arpa/inet_ntop.c b/lib/libc/arpa/inet_ntop.c new file mode 100644 index 00000000..e69de29b --- /dev/null +++ b/lib/libc/arpa/inet_ntop.c diff --git a/lib/libc/arpa/inet_pton.c b/lib/libc/arpa/inet_pton.c new file mode 100644 index 00000000..7cbb37da --- /dev/null +++ b/lib/libc/arpa/inet_pton.c @@ -0,0 +1,10 @@ +#include <arpa/inet.h> + +int inet_pton(int af, const char *restrict src, void *restrict dst) +{ + (void)af; + (void)src; + (void)dst; + // TODO + return 0; +} diff --git a/lib/libc/arpa/ntohl.c b/lib/libc/arpa/ntohl.c new file mode 100644 index 00000000..0adcbc5f --- /dev/null +++ b/lib/libc/arpa/ntohl.c @@ -0,0 +1,12 @@ +#include <arpa/inet.h> +#include <byteswap.h> + +uint32_t ntohl(uint32_t netlong) +{ + union { + int i; + char c; + } u = { 1 }; + + return u.c ? bswap32(netlong) : netlong; +} diff --git a/lib/libc/arpa/ntohs.c b/lib/libc/arpa/ntohs.c new file mode 100644 index 00000000..c0f868bc --- /dev/null +++ b/lib/libc/arpa/ntohs.c @@ -0,0 +1,12 @@ +#include <arpa/inet.h> +#include <byteswap.h> + +uint16_t ntohs(uint16_t netshort) +{ + union { + int i; + char c; + } u = { 1 }; + + return u.c ? bswap16(netshort) : netshort; +} diff --git a/lib/libc/assert/assert.c b/lib/libc/assert/assert.c new file mode 100644 index 00000000..a694da2c --- /dev/null +++ b/lib/libc/assert/assert.c @@ -0,0 +1,12 @@ +#include <assert.h> +#include <stdlib.h> +#include <stdio.h> + +_Noreturn void __assert(const char *_Nonnull __file, int __line, + const char *_Nonnull __func, + const char *_Nonnull __expr) +{ + fprintf(stderr, "%s:%d: %s: assertion \"%s\" failed\n", __file, __line, + __func, __expr); + abort(); +} diff --git a/lib/libc/ctype/isalnum.c b/lib/libc/ctype/isalnum.c new file mode 100644 index 00000000..04e94fc6 --- /dev/null +++ b/lib/libc/ctype/isalnum.c @@ -0,0 +1,12 @@ +#include <libc.h> +#include <ctype.h> + +int isalnum(int c) +{ + return isalpha(c) || isdigit(c); +} + +weak int isalnum_l(int c, locale_t unused locale) +{ + return isalnum(c); +} diff --git a/lib/libc/ctype/isalpha.c b/lib/libc/ctype/isalpha.c new file mode 100644 index 00000000..d046c09e --- /dev/null +++ b/lib/libc/ctype/isalpha.c @@ -0,0 +1,8 @@ +#include <libc.h> + +int isalpha(int c) +{ + return ((unsigned)c | 32) - 'a' < 26; +} + +weak_reference(isalpha, isalpha_l); diff --git a/lib/libc/ctype/isblank.c b/lib/libc/ctype/isblank.c new file mode 100644 index 00000000..7ad08709 --- /dev/null +++ b/lib/libc/ctype/isblank.c @@ -0,0 +1,8 @@ +#include <libc.h> + +int isblank(int c) +{ + return (c == ' ' || c == '\t'); +} + +weak_reference(isblank, isblank_l); diff --git a/lib/libc/ctype/iscntrl.c b/lib/libc/ctype/iscntrl.c new file mode 100644 index 00000000..6d4ff5a8 --- /dev/null +++ b/lib/libc/ctype/iscntrl.c @@ -0,0 +1,8 @@ +#include <libc.h> + +int iscntrl(int c) +{ + return (unsigned)c < 0x20 || c == 0x7f; +} + +weak_reference(iscntrl, iscntrl_l); diff --git a/lib/libc/ctype/isdigit.c b/lib/libc/ctype/isdigit.c new file mode 100644 index 00000000..445e1cdc --- /dev/null +++ b/lib/libc/ctype/isdigit.c @@ -0,0 +1,8 @@ +#include <libc.h> + +int isdigit(int c) +{ + return (unsigned)c - '0' < 10; +} + +weak_reference(isdigit, isdigit_l); diff --git a/lib/libc/ctype/isgraph.c b/lib/libc/ctype/isgraph.c new file mode 100644 index 00000000..03919200 --- /dev/null +++ b/lib/libc/ctype/isgraph.c @@ -0,0 +1,8 @@ +#include <libc.h> + +int isgraph(int c) +{ + return (unsigned)c - 0x21 < 0x5e; +} + +weak_reference(isgraph, isgraph_l); diff --git a/lib/libc/ctype/islower.c b/lib/libc/ctype/islower.c new file mode 100644 index 00000000..34980da6 --- /dev/null +++ b/lib/libc/ctype/islower.c @@ -0,0 +1,8 @@ +#include <libc.h> + +int islower(int c) +{ + return (unsigned)c - 'a' < 26; +} + +weak_reference(islower, islower_l); diff --git a/lib/libc/ctype/isprint.c b/lib/libc/ctype/isprint.c new file mode 100644 index 00000000..76524050 --- /dev/null +++ b/lib/libc/ctype/isprint.c @@ -0,0 +1,8 @@ +#include <libc.h> + +int isprint(int c) +{ + return (unsigned)c - 0x20 < 0x5f; +} + +weak_reference(isprint, isprint_l); diff --git a/lib/libc/ctype/ispunct.c b/lib/libc/ctype/ispunct.c new file mode 100644 index 00000000..2bd08c38 --- /dev/null +++ b/lib/libc/ctype/ispunct.c @@ -0,0 +1,12 @@ +#include <libc.h> +#include <ctype.h> + +int ispunct(int c) +{ + return isgraph(c) && !isalnum(c); +} + +weak int ispunct_l(int c, locale_t locale) +{ + return ispunct(c); +} diff --git a/lib/libc/ctype/isspace.c b/lib/libc/ctype/isspace.c new file mode 100644 index 00000000..86630c66 --- /dev/null +++ b/lib/libc/ctype/isspace.c @@ -0,0 +1,8 @@ +#include <libc.h> + +int isspace(int c) +{ + return c == ' ' || (unsigned)c - '\t' < 5; +} + +weak_reference(isspace, isspace_l); diff --git a/lib/libc/ctype/isupper.c b/lib/libc/ctype/isupper.c new file mode 100644 index 00000000..458990df --- /dev/null +++ b/lib/libc/ctype/isupper.c @@ -0,0 +1,8 @@ +#include <libc.h> + +int isupper(int c) +{ + return (unsigned)c - 'A' < 26; +} + +weak_reference(isupper, isupper_l); diff --git a/lib/libc/ctype/isxdigit.c b/lib/libc/ctype/isxdigit.c new file mode 100644 index 00000000..588df77a --- /dev/null +++ b/lib/libc/ctype/isxdigit.c @@ -0,0 +1,6 @@ +#include <ctype.h> + +int isxdigit(int c) +{ + return isdigit(c) || ((unsigned)c | 32) - 'a' < 6; +} diff --git a/lib/libc/ctype/tolower.c b/lib/libc/ctype/tolower.c new file mode 100644 index 00000000..abeab42a --- /dev/null +++ b/lib/libc/ctype/tolower.c @@ -0,0 +1,14 @@ +#include <libc.h> +#include <ctype.h> + +int tolower(int c) +{ + if (isupper(c)) + return c | 32; + return c; +} + +weak int tolower_l(int c, locale_t unused locale) +{ + return tolower(c); +} diff --git a/lib/libc/ctype/toupper.c b/lib/libc/ctype/toupper.c new file mode 100644 index 00000000..e952acd9 --- /dev/null +++ b/lib/libc/ctype/toupper.c @@ -0,0 +1,14 @@ +#include <libc.h> +#include <ctype.h> + +int toupper(int c) +{ + if (islower(c)) + return c & 0x5f; + return c; +} + +int toupper_l(int c, locale_t unused locale) +{ + return toupper(c); +} diff --git a/lib/libc/devctl/posix_devctl.c b/lib/libc/devctl/posix_devctl.c new file mode 100644 index 00000000..bc8e7331 --- /dev/null +++ b/lib/libc/devctl/posix_devctl.c @@ -0,0 +1,17 @@ +#include <libc.h> +#include <devctl.h> +#include <errno.h> +#include <syscall.h> + +int posix_devctl(int fildes, int dcmd, void *restrict dev_data_ptr, + size_t unused nbyte, int *restrict dev_info_ptr) +{ + long r; + + if ((r = syscall(ioctl, fildes, dcmd, dev_data_ptr)) < 0) + return errno; + + *dev_info_ptr = r; + + return 0; +} diff --git a/lib/libc/dirent/closedir.c b/lib/libc/dirent/closedir.c new file mode 100644 index 00000000..8a4ef3a7 --- /dev/null +++ b/lib/libc/dirent/closedir.c @@ -0,0 +1,17 @@ +#include <errno.h> +#include <__dirent.h> +#include <unistd.h> +#include <dirent.h> +#include <stdlib.h> + +int closedir(DIR *dirp) +{ + if (dirp->fildes >= 0) { + errno = EBADF; + return -1; + } + + close(dirp->fildes); + free(dirp); + return 0; +} diff --git a/lib/libc/dirent/dirfd.c b/lib/libc/dirent/dirfd.c new file mode 100644 index 00000000..857303de --- /dev/null +++ b/lib/libc/dirent/dirfd.c @@ -0,0 +1,8 @@ +#include <__dirent.h> +#include <dirent.h> +#include <stdint.h> + +int dirfd(DIR *dirp) +{ + return ~((intptr_t)dirp); +} diff --git a/lib/libc/dirent/fdopendir.c b/lib/libc/dirent/fdopendir.c new file mode 100644 index 00000000..469992c1 --- /dev/null +++ b/lib/libc/dirent/fdopendir.c @@ -0,0 +1,24 @@ +#include <errno.h> +#include <__dirent.h> +#include <dirent.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <stdlib.h> + +DIR *fdopendir(int fildes) +{ + DIR *dir; + + if (fildes < 0) { + errno = EBADF; + return NULL; + } + + if ((dir = calloc(1, sizeof(DIR))) == NULL) { + return NULL; + } + + dir->fildes = fildes; + + return dir; +} diff --git a/lib/libc/dirent/opendir.c b/lib/libc/dirent/opendir.c new file mode 100644 index 00000000..2e250024 --- /dev/null +++ b/lib/libc/dirent/opendir.c @@ -0,0 +1,15 @@ +#include <__dirent.h> + +#include <fcntl.h> +#include <unistd.h> +#include <dirent.h> + +DIR *opendir(const char *dirname) +{ + int fildes = open(dirname, O_RDONLY); + + if (fildes < 0) + return NULL; + + return fdopendir(fildes); +} diff --git a/lib/libc/dirent/readdir.c b/lib/libc/dirent/readdir.c new file mode 100644 index 00000000..e4ac8cbd --- /dev/null +++ b/lib/libc/dirent/readdir.c @@ -0,0 +1,16 @@ +#include <__dirent.h> +#include <dirent.h> + +struct dirent *readdir(DIR *dirp) +{ + static struct dirent entry; + struct dirent *result; + int err; + + err = readdir_r(dirp, &entry, &result); + if (err != 0 || result == NULL) { + return NULL; + } + + return &entry; +} diff --git a/lib/libc/dirent/readdir_r.c b/lib/libc/dirent/readdir_r.c new file mode 100644 index 00000000..9d8bf49b --- /dev/null +++ b/lib/libc/dirent/readdir_r.c @@ -0,0 +1,140 @@ +/* Maintainer: <contact@bellrise.net> */ + +#include <__dirent.h> +#include <errno.h> +#include <dirent.h> +#include <syscall.h> +#include <unistd.h> +#include <fcntl.h> +#include <string.h> +#include <stddef.h> + +#include <stdio.h> + +int readdir_r(DIR *restrict dirp, struct dirent *restrict entry, + struct dirent **restrict result) +{ + struct linux_dirent64 *ldir = (void *)dirp->buffer; + ssize_t nread; + int ret; + + if (dirp == NULL || entry == NULL || result == NULL) { + return EINVAL; + } + + /* Clear the result entry to prevent garbage data */ + memset(entry, 0, sizeof(*entry)); + + if (dirp->cached) { + ldir = (void *)(dirp->buffer + dirp->offset); + + /* Validate buffer bounds */ + if (dirp->offset >= sizeof(dirp->buffer) || + dirp->offset + sizeof(struct linux_dirent64) > + sizeof(dirp->buffer)) { + dirp->cached = 0; + *result = NULL; + return 0; + } + + /* Validate record length */ + if (ldir->d_reclen < + offsetof(struct linux_dirent64, d_name) + 1 || + dirp->offset + ldir->d_reclen > sizeof(dirp->buffer) || + ldir->d_reclen == 0) { + dirp->cached = 0; + *result = NULL; + return 0; + } + + entry->d_ino = ldir->d_ino; + + /* Calculate available space for name */ + size_t max_name_len = ldir->d_reclen - + offsetof(struct linux_dirent64, d_name); + if (max_name_len > sizeof(entry->d_name) - 1) { + max_name_len = sizeof(entry->d_name) - 1; + } + + /* Find actual string length, bounded by available space */ + size_t name_len = 0; + while (name_len < max_name_len && + ldir->d_name[name_len] != '\0') { + name_len++; + } + + memcpy(entry->d_name, ldir->d_name, name_len); + entry->d_name[name_len] = '\0'; + + dirp->cached--; + dirp->offset += ldir->d_reclen; + *result = entry; + return 0; + } + + /* Clear cached entries and reset offset */ + dirp->cached = 0; + dirp->offset = 0; + + ret = syscall(getdents64, dirp->fildes, dirp->buffer, + sizeof(dirp->buffer)); + if (ret < 0) + return errno; + + if (ret == 0) { + *result = NULL; + return 0; + } + + /* Read first entry from buffer. */ + nread = ret; + + /* Validate first entry bounds */ + if (nread < sizeof(struct linux_dirent64) || + ldir->d_reclen < offsetof(struct linux_dirent64, d_name) + 1 || + ldir->d_reclen > nread || ldir->d_reclen == 0) { + *result = NULL; + return EINVAL; + } + + dirp->offset = ldir->d_reclen; + entry->d_ino = ldir->d_ino; + + /* Calculate available space for name */ + size_t max_name_len = + ldir->d_reclen - offsetof(struct linux_dirent64, d_name); + if (max_name_len > sizeof(entry->d_name) - 1) { + max_name_len = sizeof(entry->d_name) - 1; + } + + /* Find actual string length, bounded by available space */ + size_t name_len = 0; + while (name_len < max_name_len && ldir->d_name[name_len] != '\0') { + name_len++; + } + + memcpy(entry->d_name, ldir->d_name, name_len); + entry->d_name[name_len] = '\0'; + *result = entry; + + /* Count the amount of remaining entries we have cached from getdents. + */ + for (ssize_t buffer_offset = ldir->d_reclen; buffer_offset < nread;) { + struct linux_dirent64 *next_ldir = + (void *)(dirp->buffer + buffer_offset); + + /* Validate entry bounds to prevent infinite loops */ + if (buffer_offset + sizeof(struct linux_dirent64) > nread || + next_ldir->d_reclen < + offsetof(struct linux_dirent64, d_name) + 1 || + buffer_offset + next_ldir->d_reclen > nread || + next_ldir->d_reclen == 0) { + break; + } + + buffer_offset += next_ldir->d_reclen; + dirp->cached++; + } + + return 0; +} diff --git a/lib/libc/endian/be16toh.c b/lib/libc/endian/be16toh.c new file mode 100644 index 00000000..40793f93 --- /dev/null +++ b/lib/libc/endian/be16toh.c @@ -0,0 +1,10 @@ +#include <endian.h> + +uint16_t be16toh(uint16_t big_endian_16bits) +{ +#if __BYTE_ORDER == __LITTLE_ENDIAN + return __builtin_bswap16(big_endian_16bits); +#else + return big_endian_16bits; +#endif +} diff --git a/lib/libc/endian/be32toh.c b/lib/libc/endian/be32toh.c new file mode 100644 index 00000000..bc7d4900 --- /dev/null +++ b/lib/libc/endian/be32toh.c @@ -0,0 +1,10 @@ +#include <endian.h> + +uint32_t be32toh(uint32_t big_endian_32bits) +{ +#if __BYTE_ORDER == __LITTLE_ENDIAN + return __builtin_bswap32(big_endian_32bits); +#else + return big_endian_32bits; +#endif +} diff --git a/lib/libc/endian/be64toh.c b/lib/libc/endian/be64toh.c new file mode 100644 index 00000000..c52cc8a6 --- /dev/null +++ b/lib/libc/endian/be64toh.c @@ -0,0 +1,10 @@ +#include <endian.h> + +uint64_t be64toh(uint64_t big_endian_64bits) +{ +#if __BYTE_ORDER == __LITTLE_ENDIAN + return __builtin_bswap64(big_endian_64bits); +#else + return big_endian_64bits; +#endif +} diff --git a/lib/libc/endian/htobe16.c b/lib/libc/endian/htobe16.c new file mode 100644 index 00000000..bb66595f --- /dev/null +++ b/lib/libc/endian/htobe16.c @@ -0,0 +1,10 @@ +#include <endian.h> + +uint16_t htobe16(uint16_t host_16bits) +{ +#if __BYTE_ORDER == __LITTLE_ENDIAN + return __builtin_bswap16(host_16bits); +#else + return host_16bits; +#endif +} diff --git a/lib/libc/endian/htobe32.c b/lib/libc/endian/htobe32.c new file mode 100644 index 00000000..4e294a82 --- /dev/null +++ b/lib/libc/endian/htobe32.c @@ -0,0 +1,10 @@ +#include <endian.h> + +uint32_t htobe32(uint32_t host_32bits) +{ +#if __BYTE_ORDER == __LITTLE_ENDIAN + return __builtin_bswap32(host_32bits); +#else + return host_32bits; +#endif +} diff --git a/lib/libc/endian/htobe64.c b/lib/libc/endian/htobe64.c new file mode 100644 index 00000000..ef39de6a --- /dev/null +++ b/lib/libc/endian/htobe64.c @@ -0,0 +1,10 @@ +#include <endian.h> + +uint64_t htobe64(uint64_t host_64bits) +{ +#if __BYTE_ORDER == __LITTLE_ENDIAN + return __builtin_bswap64(host_64bits); +#else + return host_64bits; +#endif +} diff --git a/lib/libc/endian/htole16.c b/lib/libc/endian/htole16.c new file mode 100644 index 00000000..c5b1caa7 --- /dev/null +++ b/lib/libc/endian/htole16.c @@ -0,0 +1,10 @@ +#include <endian.h> + +uint16_t htole16(uint16_t host_16bits) +{ +#if __BYTE_ORDER == __BIG_ENDIAN + return __builtin_bswap16(host_16bits); +#else + return host_16bits; +#endif +} diff --git a/lib/libc/endian/htole32.c b/lib/libc/endian/htole32.c new file mode 100644 index 00000000..6c9a3cdc --- /dev/null +++ b/lib/libc/endian/htole32.c @@ -0,0 +1,10 @@ +#include <endian.h> + +uint32_t htole32(uint32_t host_32bits) +{ +#if __BYTE_ORDER == __BIG_ENDIAN + return __builtin_bswap32(host_32bits); +#else + return host_32bits; +#endif +} diff --git a/lib/libc/endian/htole64.c b/lib/libc/endian/htole64.c new file mode 100644 index 00000000..36af0bea --- /dev/null +++ b/lib/libc/endian/htole64.c @@ -0,0 +1,10 @@ +#include <endian.h> + +uint64_t htole64(uint64_t host_64bits) +{ +#if __BYTE_ORDER == __BIG_ENDIAN + return __builtin_bswap64(host_64bits); +#else + return host_64bits; +#endif +} diff --git a/lib/libc/endian/le16toh.c b/lib/libc/endian/le16toh.c new file mode 100644 index 00000000..ea85b5f6 --- /dev/null +++ b/lib/libc/endian/le16toh.c @@ -0,0 +1,10 @@ +#include <endian.h> + +uint16_t le16toh(uint16_t little_endian_16bits) +{ +#if __BYTE_ORDER == __LITTLE_ENDIAN + return little_endian_16bits; +#else + return __builtin_bswap16(little_endian_16bits); +#endif +} diff --git a/lib/libc/endian/le32toh.c b/lib/libc/endian/le32toh.c new file mode 100644 index 00000000..f85f0f94 --- /dev/null +++ b/lib/libc/endian/le32toh.c @@ -0,0 +1,10 @@ +#include <endian.h> + +uint32_t le32toh(uint32_t little_endian_32bits) +{ +#if __BYTE_ORDER == __LITTLE_ENDIAN + return little_endian_32bits; +#else + return __builtin_bswap32(little_endian_32bits); +#endif +} diff --git a/lib/libc/endian/le64toh.c b/lib/libc/endian/le64toh.c new file mode 100644 index 00000000..4f2cb5fc --- /dev/null +++ b/lib/libc/endian/le64toh.c @@ -0,0 +1,10 @@ +#include <endian.h> + +uint64_t le64toh(uint64_t little_endian_64bits) +{ +#if __BYTE_ORDER == __LITTLE_ENDIAN + return little_endian_64bits; +#else + return __builtin_bswap64(little_endian_64bits); +#endif +} diff --git a/lib/libc/errno/errno.c b/lib/libc/errno/errno.c new file mode 100644 index 00000000..55423e22 --- /dev/null +++ b/lib/libc/errno/errno.c @@ -0,0 +1,8 @@ +// TODO: Should return the address of the calling thread's `errno` storage. +// Currently, this is a stub implementation that returns the address of a +// static variable. +int *__errno(void) +{ + static int __thread_errno = 0; + return &__thread_errno; +} diff --git a/lib/libc/fcntl/creat.c b/lib/libc/fcntl/creat.c new file mode 100644 index 00000000..fdcb6655 --- /dev/null +++ b/lib/libc/fcntl/creat.c @@ -0,0 +1,7 @@ +#include <fcntl.h> +#include <syscall.h> + +int creat(const char *path, mode_t mode) +{ + return syscall(creat, path, mode); +} diff --git a/lib/libc/fcntl/fcntl.c b/lib/libc/fcntl/fcntl.c new file mode 100644 index 00000000..ae213df5 --- /dev/null +++ b/lib/libc/fcntl/fcntl.c @@ -0,0 +1,37 @@ +#include <fcntl.h> +#include <stdarg.h> +#include <syscall.h> + +int fcntl(int fildes, int cmd, ...) +{ + unsigned long arg; + va_list ap; + va_start(ap, cmd); + arg = va_arg(ap, unsigned long); + va_end(ap); + + if (cmd == F_DUPFD_CLOEXEC) { + int ret = syscall(fcntl, fildes, F_DUPFD_CLOEXEC, arg); + if (ret != -EINVAL) { + if (ret >= 0) + syscall(fcntl, ret, F_SETFD, FD_CLOEXEC); + return __syscall_ret(ret); + } + + ret = syscall(fcntl, fildes, F_DUPFD_CLOEXEC, 0); + if (ret != -EINVAL) { + if (ret >= 0) + __syscall(close, ret); + + return __syscall_ret(-EINVAL); + } + + ret = syscall(fcntl, fildes, F_DUPFD, arg); + if (ret >= 0) + syscall(fcntl, ret, F_SETFD, FD_CLOEXEC); + + return __syscall_ret(ret); + } + + return syscall(fcntl, fildes, cmd); +} diff --git a/lib/libc/fcntl/open.c b/lib/libc/fcntl/open.c new file mode 100644 index 00000000..dbdff8f9 --- /dev/null +++ b/lib/libc/fcntl/open.c @@ -0,0 +1,23 @@ +#include <fcntl.h> +#include <stdarg.h> +#include <syscall.h> + +int open(const char *path, int oflag, ...) +{ + long ret; + mode_t mode = 0; + + if ((oflag & O_CREAT)) { + va_list ap; + va_start(ap, oflag); + mode = va_arg(ap, mode_t); + va_end(ap); + } + + ret = syscall(open, path, oflag, mode); + + if (ret >= 0 && (oflag & O_CLOEXEC)) + return syscall(fcntl, ret, F_SETFD, FD_CLOEXEC); + + return ret; +} diff --git a/lib/libc/fcntl/openat.c b/lib/libc/fcntl/openat.c new file mode 100644 index 00000000..bb34d600 --- /dev/null +++ b/lib/libc/fcntl/openat.c @@ -0,0 +1,17 @@ +#include <fcntl.h> +#include <stdarg.h> +#include <syscall.h> + +int openat(int fd, const char *path, int oflag, ...) +{ + mode_t mode = 0; + + if (oflag & O_CREAT) { + va_list ap; + va_start(ap, oflag); + mode = va_arg(ap, mode_t); + va_end(ap); + } + + return syscall(openat, fd, path, oflag, mode); +} diff --git a/lib/libc/fcntl/posix_fadvise.c b/lib/libc/fcntl/posix_fadvise.c new file mode 100644 index 00000000..dcf278fd --- /dev/null +++ b/lib/libc/fcntl/posix_fadvise.c @@ -0,0 +1,7 @@ +#include <fcntl.h> +#include <syscall.h> + +int posix_fadvise(int fd, off_t offset, off_t len, int advice) +{ + return syscall(fadvise64, fd, offset, len, advice); +} diff --git a/lib/libc/fcntl/posix_fallocate.c b/lib/libc/fcntl/posix_fallocate.c new file mode 100644 index 00000000..221f2d38 --- /dev/null +++ b/lib/libc/fcntl/posix_fallocate.c @@ -0,0 +1,7 @@ +#include <fcntl.h> +#include <syscall.h> + +int posix_fallocate(int fd, off_t offset, off_t len) +{ + return syscall(fallocate, fd, 0, offset, len); +} diff --git a/lib/libc/grp/getgrgid.c b/lib/libc/grp/getgrgid.c new file mode 100644 index 00000000..66ccaff1 --- /dev/null +++ b/lib/libc/grp/getgrgid.c @@ -0,0 +1,15 @@ +#include <grp.h> +#include <stddef.h> +#include <limits.h> + +struct group *getgrgid(gid_t gid) +{ + static struct group grp; + static char buf[LINE_MAX * 2]; + struct group *res; + + if (getgrgid_r(gid, &grp, buf, sizeof(buf), &res) != 0) + return NULL; + + return res; +} diff --git a/lib/libc/grp/getgrgid_r.c b/lib/libc/grp/getgrgid_r.c new file mode 100644 index 00000000..b3449d14 --- /dev/null +++ b/lib/libc/grp/getgrgid_r.c @@ -0,0 +1,74 @@ +#include <grp.h> +#include <string.h> +#include <limits.h> +#include <errno.h> +#include <stdlib.h> +#include <stdio.h> + +int getgrgid_r(gid_t gid, struct group *grp, char *buf, size_t buflen, + struct group **result) +{ + FILE *f = fopen("/etc/group", "r"); + if (!f) { + *result = NULL; + return errno; + } + + char line[LINE_MAX]; + char *members[1024]; + + while (fgets(line, sizeof(line), f)) { + char *name = strtok(line, ":"); + char *passwd = strtok(NULL, ":"); + char *gid_str = strtok(NULL, ":"); + char *mem_str = strtok(NULL, "\n"); + + if (!name || !passwd || !gid_str) + continue; + + gid_t file_gid = (gid_t)strtoul(gid_str, NULL, 10); + if (file_gid != gid) + continue; + + size_t len = strlen(name) + 1; + if (len > buflen) { + fclose(f); + *result = NULL; + return ERANGE; + } + memcpy(buf, name, len); + grp->gr_name = buf; + buf += len; + buflen -= len; + + grp->gr_gid = file_gid; + + int i = 0; + if (mem_str && *mem_str) { + char *tok = strtok(mem_str, ","); + while (tok && i < 1023) { + size_t l = strlen(tok) + 1; + if (l > buflen) { + fclose(f); + *result = NULL; + return ERANGE; + } + memcpy(buf, tok, l); + members[i++] = buf; + buf += l; + buflen -= l; + tok = strtok(NULL, ","); + } + } + members[i] = NULL; + grp->gr_mem = members; + + fclose(f); + *result = grp; + return 0; + } + + fclose(f); + *result = NULL; + return 0; +} diff --git a/lib/libc/include/__alpha.h b/lib/libc/include/__alpha.h new file mode 100644 index 00000000..f2e8bfb1 --- /dev/null +++ b/lib/libc/include/__alpha.h @@ -0,0 +1,233 @@ +/* Alpha ISO8859-1 font data */ +18, 17, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 17, 34, 35, + 36, 17, 37, 38, 39, 40, 41, 42, 43, 44, 17, 45, 46, 47, 16, 16, 48, 16, + 16, 16, 16, 16, 16, 16, 49, 50, 51, 16, 52, 53, 16, 16, 17, 17, 17, 17, + 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, + 17, 17, 17, 54, 17, 17, 17, 17, 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0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 255, 255, 255, 255, 255, 15, 255, 3, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 31, 0, 0, 0, 0, 0, 0, 0, 255, 255, 255, 255, 255, 255, + 255, 255, 143, 8, 255, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 239, 255, 255, 255, 150, 254, 247, 10, 132, 234, 150, + 170, 150, 247, 247, 94, 255, 251, 255, 15, 238, 251, 255, 15, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 255, 3, 255, 255, 255, 3, + 255, 255, 255, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, diff --git a/lib/libc/include/__dirent.h b/lib/libc/include/__dirent.h new file mode 100644 index 00000000..9b23c9d2 --- /dev/null +++ b/lib/libc/include/__dirent.h @@ -0,0 +1,25 @@ +#ifndef __LIBC_DIRENT_H +#define __LIBC_DIRENT_H + +#include <libc.h> +#include <stdio.h> +#include <sys/types.h> +#include <stdint.h> + +struct linux_dirent64 { + uint64_t d_ino; + int64_t d_off; + unsigned short d_reclen; + unsigned char d_type; + char d_name[]; +}; + +struct __DIR { + int fildes; + int cached; + off_t tell; + off_t offset; + char buffer[BUFSIZ] __attribute__((__aligned__(8))); +}; + +#endif diff --git a/lib/libc/include/__locale.h b/lib/libc/include/__locale.h new file mode 100644 index 00000000..0a709c78 --- /dev/null +++ b/lib/libc/include/__locale.h @@ -0,0 +1,41 @@ +#ifndef __LIBC_LOCALE_H +#define __LIBC_LOCALE_H + +#include <locale.h> +#include <stdint.h> + +typedef __SIZE_TYPE__ size_t; + +struct __locale_t { + struct __locale_map { + const void *map; + size_t map_size; + char name[24]; + } maps[6]; +}; + +typedef struct __locale_t *locale_t; + +static const struct __locale_t __c_locale = { 0 }; + +static const struct __locale_t __utf8_locale = { + .maps[LC_CTYPE] = { .map = &((const uint32_t[]){ 0x950412de, 0, -1, -1, + -1 }), + .map_size = sizeof(uint32_t) * 5, + .name = "C.UTF-8" }, +}; + +#undef MB_CUR_MAX +#define MB_CUR_MAX (((locale_t) & __utf8_locale) ? 4 : 1) + +static inline int __mb_cur_max(void) +{ + return MB_CUR_MAX; +} + +static inline int __locale_allocated(locale_t loc) +{ + return loc != (locale_t)&__c_locale && loc != (locale_t)&__utf8_locale; +} + +#endif diff --git a/lib/libc/include/__select.h b/lib/libc/include/__select.h new file mode 100644 index 00000000..a38bbdce --- /dev/null +++ b/lib/libc/include/__select.h @@ -0,0 +1,8 @@ +#ifndef __LIBC_SELECT_H +#define __LIBC_SELECT_H + +struct __fd_set { + unsigned long fds_bits[16]; +}; + +#endif diff --git a/lib/libc/include/__signal.h b/lib/libc/include/__signal.h new file mode 100644 index 00000000..6b762dee --- /dev/null +++ b/lib/libc/include/__signal.h @@ -0,0 +1,12 @@ +#ifndef __LIBC_SIGNAL_H +#define __LIBC_SIGNAL_H + +static const char *__sys_signame[] = { + "SIGHUP", "SIGINT", "SIGQUIT", "SIGILL", "SIGTRAP", "SIGABRT", + "SIGBUS", "SIGFPE", "SIGKILL", "SIGUSR1", "SIGSEGV", "SIGUSR2", + "SIGPIPE", "SIGALRM", "SIGTERM", "SIGCHLD", "SIGCONT", "SIGSTOP", + "SIGTSTP", "SIGTTIN", "SIGTTOU", "SIGURG", "SIGXCPU", "SIGXFSZ", + "SIGVTALRM", "SIGPROF", "SIGWINCH", "SIGIO", "SIGSYS" +}; + +#endif diff --git a/lib/libc/include/__statvfs.h b/lib/libc/include/__statvfs.h new file mode 100644 index 00000000..c8a746d4 --- /dev/null +++ b/lib/libc/include/__statvfs.h @@ -0,0 +1,21 @@ +#ifndef __LIBC_STATVFS_H__ +#define __LIBC_STATVFS_H__ + +typedef __UINT64_TYPE__ fsblkcnt_t; +typedef __UINT64_TYPE__ fsfilcnt_t; + +struct __statvfs { + unsigned long f_bsize; + unsigned long f_frsize; + fsblkcnt_t f_blocks; + fsblkcnt_t f_bfree; + fsblkcnt_t f_bavail; + fsfilcnt_t f_files; + fsfilcnt_t f_ffree; + fsfilcnt_t f_favail; + unsigned long f_fsid; + unsigned long f_flag; + unsigned long f_namemax; +}; + +#endif diff --git a/lib/libc/include/atomic.h b/lib/libc/include/atomic.h new file mode 100644 index 00000000..94cd34db --- /dev/null +++ b/lib/libc/include/atomic.h @@ -0,0 +1,23 @@ +#ifndef __LIBC_ATOMIC_H +#define __LIBC_ATOMIC_H + +#include <stdatomic.h> + +#define LIBC_LOCK(__lock) __libc_lock(&__lock) +#define LIBC_UNLOCK(__lock) atomic_flag_clear(&__lock) + +static __inline void __libc_lock(volatile atomic_flag *lock) +{ + while (atomic_flag_test_and_set_explicit(lock, memory_order_acquire)) { + unsigned int spins = 1; + do { + for (unsigned int i = 0; i < spins; i++) + __asm__ volatile("pause"); + if (spins < 64) + spins *= 2; + } while (atomic_flag_test_and_set_explicit( + lock, memory_order_relaxed)); + } +} + +#endif diff --git a/lib/libc/include/byteswap.h b/lib/libc/include/byteswap.h new file mode 100644 index 00000000..9dfe6520 --- /dev/null +++ b/lib/libc/include/byteswap.h @@ -0,0 +1,8 @@ +#ifndef __LIBC_BYTESWAP_H +#define __LIBC_BYTESWAP_H + +#define bswap16(x) __builtin_bswap16(x) +#define bswap32(x) __builtin_bswap32(x) +#define bswap64(x) __builtin_bswap64(x) + +#endif diff --git a/lib/libc/include/features.h b/lib/libc/include/features.h new file mode 100644 index 00000000..62472259 --- /dev/null +++ b/lib/libc/include/features.h @@ -0,0 +1,6 @@ +#ifndef __LIBC_FEATURES_H +#define __LIBC_FEATURES_H + +#define weak extern __attribute__((weak)) + +#endif diff --git a/lib/libc/include/io.h b/lib/libc/include/io.h new file mode 100644 index 00000000..675a3cc3 --- /dev/null +++ b/lib/libc/include/io.h @@ -0,0 +1,55 @@ +#ifndef __LIBC_IO +#define __LIBC_IO + +#include <stddef.h> +#include <stdlib.h> +#include <string.h> +#include <stdint.h> +#include <sys/types.h> +#include <stdatomic.h> + +typedef __SIZE_TYPE__ size_t; + +#define _IO_ERR 0x4 +#define _IO_EOF 0x8 +#define _IO_WIDE 0x10 + +/* Buffering modes */ +#define _IOFBF 0 /* Full buffering */ +#define _IOLBF 1 /* Line buffering */ +#define _IONBF 2 /* No buffering */ + +/* File access modes */ +#ifndef O_RDONLY +#define O_RDONLY 0 +#define O_WRONLY 1 +#define O_RDWR 2 +#define O_ACCMODE 3 +#endif + +/* Atomic operations for threading */ +#define LIBC_LOCK(x) \ + while (atomic_flag_test_and_set(&(x))) { \ + } +#define LIBC_UNLOCK(x) atomic_flag_clear(&(x)) + +struct __FILE { + int fd; + uint32_t flags; + int type; + pid_t pid; + atomic_flag lock; + char *buf; + int eof; + size_t buf_size; + size_t buf_pos; + size_t buf_len; + unsigned char unget_buf[16]; + size_t unget_cnt; + off_t offset; + struct __FILE *next; +}; + +void __libc_fadd(struct __FILE *f); + +#endif diff --git a/lib/libc/include/libc.h b/lib/libc/include/libc.h new file mode 100644 index 00000000..3f5f2644 --- /dev/null +++ b/lib/libc/include/libc.h @@ -0,0 +1,27 @@ +#ifndef __LIBC_LIBC_H +#define __LIBC_LIBC_H + +#include <__locale.h> +#include <stdatomic.h> + +#define likely(x) __builtin_expect(!!(x), 1) +#define unlikely(x) __builtin_expect(!!(x), 0) +#define unused __attribute__((unused)) +#define aligned(type) __attribute__((aligned(__alignof__(type)))) +#define weak __attribute__((__weak__)) +#define weak_reference(old, new) \ + extern __typeof(old) new __attribute__((__weak__, __alias__(#old))) + +static struct { + enum { + LIBC_ENVP_TOUCHED = 1 << 0, + } flags; + struct { + volatile atomic_flag abort; + volatile atomic_flag malloc; + volatile atomic_flag environ; + } lock; + struct __locale_t locale; +} libc = { .lock = { ATOMIC_FLAG_INIT, ATOMIC_FLAG_INIT, ATOMIC_FLAG_INIT } }; + +#endif diff --git a/lib/libc/include/libc/dirent.h b/lib/libc/include/libc/dirent.h new file mode 100644 index 00000000..296cc91e --- /dev/null +++ b/lib/libc/include/libc/dirent.h @@ -0,0 +1,6 @@ +#ifndef __LIBC_DIRENT_H +#define __LIBC_DIRENT_H + +struct __DIR {}; + +#endif diff --git a/lib/libc/include/malloc.h b/lib/libc/include/malloc.h new file mode 100644 index 00000000..ba2755b0 --- /dev/null +++ b/lib/libc/include/malloc.h @@ -0,0 +1,98 @@ +#ifndef __LIBC_MALLOC_H +#define __LIBC_MALLOC_H + +#include <stddef.h> +#include <stdint.h> +#include <stdatomic.h> + +struct class { + uint32_t size; + uint32_t count; +}; + +struct page { + volatile atomic_flag lock; + + enum { + PAGE_SMALL = 0x0, + PAGE_MEDIUM = 0x1, + PAGE_LARGE = 0x2, + } flags; + + struct { + uint32_t size; + uint32_t used; + uint32_t count; + } block; + + uint8_t *bitmap; + uint8_t *heap; + + struct page *next; + struct page *prev; +}; + +extern struct page *__malloc_pvec; + +#define SMALL_PAGE_SIZE_SHIFT 16 +#define SMALL_PAGE_SIZE (1 << SMALL_PAGE_SIZE_SHIFT) +#define SMALL_PAGE_MASK (~((uintptr_t)SMALL_PAGE_SIZE - 1)) + +#define MEDIUM_PAGE_SIZE_SHIFT 22 +#define MEDIUM_PAGE_SIZE (1 << MEDIUM_PAGE_SIZE_SHIFT) +#define MEDIUM_PAGE_MASK (~((uintptr_t)MEDIUM_PAGE_SIZE - 1)) + +#define LARGE_PAGE_SIZE_SHIFT 26 +#define LARGE_PAGE_SIZE (1 << LARGE_PAGE_SIZE_SHIFT) +#define LARGE_PAGE_MASK (~((uintptr_t)LARGE_PAGE_SIZE - 1)) + +#define SMALL_CLASS(n) \ + { (n * 16), (SMALL_PAGE_SIZE - sizeof(struct page)) / (n * 16) } +#define MEDIUM_CLASS(n) \ + { (n * 16), (MEDIUM_PAGE_SIZE - sizeof(struct page)) / (n * 16) } +#define LARGE_CLASS(n) \ + { (n * 16), (LARGE_PAGE_SIZE - sizeof(struct page)) / (n * 16) } + +static const struct class global_size_class[] = { + SMALL_CLASS(1), SMALL_CLASS(1), SMALL_CLASS(2), + SMALL_CLASS(3), SMALL_CLASS(4), SMALL_CLASS(5), + SMALL_CLASS(6), SMALL_CLASS(7), SMALL_CLASS(8), + SMALL_CLASS(9), SMALL_CLASS(10), SMALL_CLASS(11), + SMALL_CLASS(12), SMALL_CLASS(13), SMALL_CLASS(14), + SMALL_CLASS(15), SMALL_CLASS(16), SMALL_CLASS(17), + SMALL_CLASS(18), SMALL_CLASS(19), SMALL_CLASS(20), + SMALL_CLASS(21), SMALL_CLASS(22), SMALL_CLASS(23), + SMALL_CLASS(24), SMALL_CLASS(25), SMALL_CLASS(26), + SMALL_CLASS(27), SMALL_CLASS(28), SMALL_CLASS(29), + SMALL_CLASS(30), SMALL_CLASS(31), SMALL_CLASS(32), + SMALL_CLASS(33), SMALL_CLASS(34), SMALL_CLASS(35), + SMALL_CLASS(36), SMALL_CLASS(37), SMALL_CLASS(38), + SMALL_CLASS(39), SMALL_CLASS(40), SMALL_CLASS(41), + SMALL_CLASS(42), SMALL_CLASS(43), SMALL_CLASS(44), + SMALL_CLASS(45), SMALL_CLASS(46), SMALL_CLASS(47), + SMALL_CLASS(48), SMALL_CLASS(49), SMALL_CLASS(50), + SMALL_CLASS(51), SMALL_CLASS(52), SMALL_CLASS(53), + SMALL_CLASS(54), SMALL_CLASS(55), SMALL_CLASS(56), + SMALL_CLASS(57), SMALL_CLASS(58), SMALL_CLASS(59), + SMALL_CLASS(60), SMALL_CLASS(61), SMALL_CLASS(62), + SMALL_CLASS(63), SMALL_CLASS(64), SMALL_CLASS(80), + SMALL_CLASS(96), SMALL_CLASS(112), SMALL_CLASS(128), + SMALL_CLASS(160), SMALL_CLASS(192), SMALL_CLASS(224), + SMALL_CLASS(256), MEDIUM_CLASS(320), MEDIUM_CLASS(384), + MEDIUM_CLASS(448), MEDIUM_CLASS(512), MEDIUM_CLASS(640), + MEDIUM_CLASS(768), MEDIUM_CLASS(896), MEDIUM_CLASS(1024), + MEDIUM_CLASS(1280), MEDIUM_CLASS(1536), MEDIUM_CLASS(1792), + MEDIUM_CLASS(2048), MEDIUM_CLASS(2560), MEDIUM_CLASS(3072), + MEDIUM_CLASS(3584), MEDIUM_CLASS(4096), MEDIUM_CLASS(5120), + MEDIUM_CLASS(6144), MEDIUM_CLASS(7168), MEDIUM_CLASS(8192), + MEDIUM_CLASS(10240), MEDIUM_CLASS(12288), MEDIUM_CLASS(14336), + MEDIUM_CLASS(16384), LARGE_CLASS(20480), LARGE_CLASS(24576), + LARGE_CLASS(28672), LARGE_CLASS(32768), LARGE_CLASS(40960), + LARGE_CLASS(49152), LARGE_CLASS(57344), LARGE_CLASS(65536), + LARGE_CLASS(81920), LARGE_CLASS(98304), LARGE_CLASS(114688), + LARGE_CLASS(131072), LARGE_CLASS(163840), LARGE_CLASS(196608), + LARGE_CLASS(229376), LARGE_CLASS(262144), LARGE_CLASS(327680), + LARGE_CLASS(393216), LARGE_CLASS(458752), LARGE_CLASS(524288) +}; + +#endif diff --git a/lib/libc/include/syscall.h b/lib/libc/include/syscall.h new file mode 100644 index 00000000..645c4bcd --- /dev/null +++ b/lib/libc/include/syscall.h @@ -0,0 +1,59 @@ +#ifndef __LIBC_SYSCALL_H +#define __LIBC_SYSCALL_H + +#include <asm/syscall.h> +#include <asm/unistd_64.h> +#include <errno.h> + +typedef long syscall_arg_t; + +#define __SYSCALL_NARGS_(a, b, c, d, e, f, g, h, n, ...) n +#define __SYSCALL_NARGS(...) \ + __SYSCALL_NARGS_(__VA_ARGS__, 7, 6, 5, 4, 3, 2, 1, 0, ) + +#define __SYSCALL_CONCAT_(a, b) a##b +#define __SYSCALL_CONCAT(a, b) __SYSCALL_CONCAT_(a, b) + +#define __SYSCALL_(b, ...) \ + __SYSCALL_CONCAT(b, __SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__) + +#define __syscall(...) __SYSCALL_(__syscall_, __VA_ARGS__) +#define syscall(...) __syscall_ret(__syscall(__VA_ARGS__)) + +#define __sa(x) ((syscall_arg_t)(x)) + +#define __syscall_0(n) __syscall0(__NR_##n) +#define __syscall_1(n, a) __syscall1(__NR_##n, __sa(a)) +#define __syscall_2(n, a, b) __syscall2(__NR_##n, __sa(a), __sa(b)) +#define __syscall_3(n, a, b, c) __syscall3(__NR_##n, __sa(a), __sa(b), __sa(c)) +#define __syscall_4(n, a, b, c, d) \ + __syscall4(__NR_##n, __sa(a), __sa(b), __sa(c), __sa(d)) +#define __syscall_5(n, a, b, c, d, e) \ + __syscall5(__NR_##n, __sa(a), __sa(b), __sa(c), __sa(d), __sa(e)) +#define __syscall_6(n, a, b, c, d, e, f) \ + __syscall6(__NR_##n, __sa(a), __sa(b), __sa(c), __sa(d), __sa(e), \ + __sa(f)) +#define __syscall_7(n, a, b, c, d, e, f, g) \ + __syscall7(__NR_##n, __sa(a), __sa(b), __sa(c), __sa(d), __sa(e), \ + __sa(f), __sa(g)) + +static __inline long __syscall_ret(long ret) +{ + if (ret > -4096 && ret < 0) { + errno = -ret; + ret = -1; + } + return ret; +} + +#ifdef __NR_pread64 +#undef __NR_pread +#define __NR_pread __NR_pread64 +#endif + +#ifdef __NR_pwrite64 +#undef __NR_pwrite +#define __NR_pwrite __NR_pwrite64 +#endif + +#endif diff --git a/lib/libc/include/thread.h b/lib/libc/include/thread.h new file mode 100644 index 00000000..662f1dc1 --- /dev/null +++ b/lib/libc/include/thread.h @@ -0,0 +1,9 @@ +#ifndef __LIBC_THREAD_H +#define __LIBC_THREAD_H + +struct __thread_self { + int tid; + int _errno; +}; + +#endif diff --git a/lib/libc/inttypes/imaxabs.c b/lib/libc/inttypes/imaxabs.c new file mode 100644 index 00000000..3af1df67 --- /dev/null +++ b/lib/libc/inttypes/imaxabs.c @@ -0,0 +1,6 @@ +#include <stdint.h> + +intmax_t imaxabs(intmax_t j) +{ + return (j < 0) ? -j : j; +} diff --git a/lib/libc/inttypes/imaxdiv.c b/lib/libc/inttypes/imaxdiv.c new file mode 100644 index 00000000..36fd6d20 --- /dev/null +++ b/lib/libc/inttypes/imaxdiv.c @@ -0,0 +1,6 @@ +#include <inttypes.h> + +imaxdiv_t imaxdiv(intmax_t num, intmax_t den) +{ + return (imaxdiv_t){ num / den, num % den }; +} diff --git a/lib/libc/inttypes/strtoimax.c b/lib/libc/inttypes/strtoimax.c new file mode 100644 index 00000000..f66e58a0 --- /dev/null +++ b/lib/libc/inttypes/strtoimax.c @@ -0,0 +1,149 @@ +/* $OpenBSD: strtoimax.c,v 1.4 2017/07/06 16:23:11 millert Exp $ */ +/* + * Copyright (c) 1992 The Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <ctype.h> +#include <errno.h> +#include <inttypes.h> + +/* + * Convert a string to an intmax_t + * + * Ignores `locale' stuff. Assumes that the upper and lower case + * alphabets and digits are each contiguous. + */ +intmax_t strtoimax(const char *nptr, char **endptr, int base) +{ + const char *s; + intmax_t acc, cutoff; + int c; + int neg, any, cutlim; + + /* + * Ensure that base is between 2 and 36 inclusive, or the special + * value of 0. + */ + if (base < 0 || base == 1 || base > 36) { + if (endptr != 0) + *endptr = (char *)nptr; + errno = EINVAL; + return 0; + } + + /* + * Skip white space and pick up leading +/- sign if any. + * If base is 0, allow 0x for hex and 0 for octal, else + * assume decimal; if base is already 16, allow 0x. + */ + s = nptr; + do { + c = (unsigned char)*s++; + } while (isspace(c)); + if (c == '-') { + neg = 1; + c = *s++; + } else { + neg = 0; + if (c == '+') + c = *s++; + } + if ((base == 0 || base == 16) && c == '0' && (*s == 'x' || *s == 'X') && + isxdigit((unsigned char)s[1])) { + c = s[1]; + s += 2; + base = 16; + } + if (base == 0) + base = c == '0' ? 8 : 10; + + /* + * Compute the cutoff value between legal numbers and illegal + * numbers. That is the largest legal value, divided by the + * base. An input number that is greater than this value, if + * followed by a legal input character, is too big. One that + * is equal to this value may be valid or not; the limit + * between valid and invalid numbers is then based on the last + * digit. For instance, if the range for intmax_t is + * [-9223372036854775808..9223372036854775807] and the input base + * is 10, cutoff will be set to 922337203685477580 and cutlim to + * either 7 (neg==0) or 8 (neg==1), meaning that if we have + * accumulated a value > 922337203685477580, or equal but the + * next digit is > 7 (or 8), the number is too big, and we will + * return a range error. + * + * Set any if any `digits' consumed; make it negative to indicate + * overflow. + */ + cutoff = neg ? INTMAX_MIN : INTMAX_MAX; + cutlim = cutoff % base; + cutoff /= base; + if (neg) { + if (cutlim > 0) { + cutlim -= base; + cutoff += 1; + } + cutlim = -cutlim; + } + for (acc = 0, any = 0;; c = (unsigned char)*s++) { + if (isdigit(c)) + c -= '0'; + else if (isalpha(c)) + c -= isupper(c) ? 'A' - 10 : 'a' - 10; + else + break; + if (c >= base) + break; + if (any < 0) + continue; + if (neg) { + if (acc < cutoff || (acc == cutoff && c > cutlim)) { + any = -1; + acc = INTMAX_MIN; + errno = ERANGE; + } else { + any = 1; + acc *= base; + acc -= c; + } + } else { + if (acc > cutoff || (acc == cutoff && c > cutlim)) { + any = -1; + acc = INTMAX_MAX; + errno = ERANGE; + } else { + any = 1; + acc *= base; + acc += c; + } + } + } + if (endptr != 0) + *endptr = (char *)(any ? s - 1 : nptr); + return (acc); +} diff --git a/lib/libc/inttypes/strtoumax.c b/lib/libc/inttypes/strtoumax.c new file mode 100644 index 00000000..500e255a --- /dev/null +++ b/lib/libc/inttypes/strtoumax.c @@ -0,0 +1,7 @@ +#include <stdint.h> +#include <stdlib.h> + +uintmax_t strtoumax(const char *restrict s, char **restrict p, int base) +{ + return strtoull(s, p, base); +} diff --git a/lib/libc/libgen/basename.c b/lib/libc/libgen/basename.c new file mode 100644 index 00000000..0de08da4 --- /dev/null +++ b/lib/libc/libgen/basename.c @@ -0,0 +1,62 @@ +/* $OpenBSD: basename.c,v 1.17 2020/10/20 19:30:14 naddy Exp $ */ + +/* + * Copyright (c) 1997, 2004 Todd C. Miller <millert@openbsd.org> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <errno.h> +#include <libgen.h> +#include <limits.h> +#include <string.h> + +char *basename(char *path) +{ + static char bname[PATH_MAX]; + size_t len; + const char *endp, *startp; + + /* Empty or NULL string gets treated as "." */ + if (path == NULL || *path == '\0') { + bname[0] = '.'; + bname[1] = '\0'; + return (bname); + } + + /* Strip any trailing slashes */ + endp = path + strlen(path) - 1; + while (endp > path && *endp == '/') + endp--; + + /* All slashes becomes "/" */ + if (endp == path && *endp == '/') { + bname[0] = '/'; + bname[1] = '\0'; + return (bname); + } + + /* Find the start of the base */ + startp = endp; + while (startp > path && *(startp - 1) != '/') + startp--; + + len = endp - startp + 1; + if (len >= sizeof(bname)) { + errno = ENAMETOOLONG; + return (NULL); + } + memcpy(bname, startp, len); + bname[len] = '\0'; + return (bname); +} diff --git a/lib/libc/libgen/dirname.c b/lib/libc/libgen/dirname.c new file mode 100644 index 00000000..48860e2b --- /dev/null +++ b/lib/libc/libgen/dirname.c @@ -0,0 +1,66 @@ +/* $OpenBSD: dirname.c,v 1.17 2020/10/20 19:30:14 naddy Exp $ */ + +/* + * Copyright (c) 1997, 2004 Todd C. Miller <millert@openbsd.org> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <errno.h> +#include <libgen.h> +#include <limits.h> +#include <string.h> + +char *dirname(char *path) +{ + static char dname[PATH_MAX]; + size_t len; + const char *endp; + + /* Empty or NULL string gets treated as "." */ + if (path == NULL || *path == '\0') { + dname[0] = '.'; + dname[1] = '\0'; + return (dname); + } + + /* Strip any trailing slashes */ + endp = path + strlen(path) - 1; + while (endp > path && *endp == '/') + endp--; + + /* Find the start of the dir */ + while (endp > path && *endp != '/') + endp--; + + /* Either the dir is "/" or there are no slashes */ + if (endp == path) { + dname[0] = *endp == '/' ? '/' : '.'; + dname[1] = '\0'; + return (dname); + } else { + /* Move forward past the separating slashes */ + do { + endp--; + } while (endp > path && *endp == '/'); + } + + len = endp - path + 1; + if (len >= sizeof(dname)) { + errno = ENAMETOOLONG; + return (NULL); + } + memcpy(dname, path, len); + dname[len] = '\0'; + return (dname); +} diff --git a/lib/libc/mman/mlock.c b/lib/libc/mman/mlock.c new file mode 100644 index 00000000..a7f48b27 --- /dev/null +++ b/lib/libc/mman/mlock.c @@ -0,0 +1,7 @@ +#include <syscall.h> +#include <sys/mman.h> + +int mlock(const void *addr, size_t len) +{ + return syscall(mlock, addr, len); +} diff --git a/lib/libc/mman/mlockall.c b/lib/libc/mman/mlockall.c new file mode 100644 index 00000000..df4dcbd1 --- /dev/null +++ b/lib/libc/mman/mlockall.c @@ -0,0 +1,7 @@ +#include <syscall.h> +#include <sys/mman.h> + +int mlockall(int flags) +{ + return syscall(mlockall, flags); +} diff --git a/lib/libc/mman/mmap.c b/lib/libc/mman/mmap.c new file mode 100644 index 00000000..d7918447 --- /dev/null +++ b/lib/libc/mman/mmap.c @@ -0,0 +1,10 @@ +#include <stddef.h> +#include <linux/mman.h> +#include <syscall.h> + +typedef __INT64_TYPE__ off_t; + +void *mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off) +{ + return (void *)syscall(mmap, addr, len, prot, flags, fildes, off); +} diff --git a/lib/libc/mman/mprotect.c b/lib/libc/mman/mprotect.c new file mode 100644 index 00000000..ab5c6059 --- /dev/null +++ b/lib/libc/mman/mprotect.c @@ -0,0 +1,7 @@ +#include <syscall.h> +#include <sys/mman.h> + +int mprotect(void *addr, size_t len, int prot) +{ + return syscall(mprotect, addr, len, prot); +} diff --git a/lib/libc/mman/msync.c b/lib/libc/mman/msync.c new file mode 100644 index 00000000..b8dab1a9 --- /dev/null +++ b/lib/libc/mman/msync.c @@ -0,0 +1,7 @@ +#include <syscall.h> +#include <sys/mman.h> + +int msync(void *addr, size_t len, int flags) +{ + return syscall(msync, addr, len, flags); +} diff --git a/lib/libc/mman/munlock.c b/lib/libc/mman/munlock.c new file mode 100644 index 00000000..b934c87d --- /dev/null +++ b/lib/libc/mman/munlock.c @@ -0,0 +1,7 @@ +#include <syscall.h> +#include <sys/mman.h> + +int munlock(const void *addr, size_t len) +{ + return syscall(munlock, addr, len); +} diff --git a/lib/libc/mman/munlockall.c b/lib/libc/mman/munlockall.c new file mode 100644 index 00000000..c7f9c8d2 --- /dev/null +++ b/lib/libc/mman/munlockall.c @@ -0,0 +1,7 @@ +#include <syscall.h> +#include <sys/mman.h> + +int munlockall(void) +{ + return syscall(munlockall); +} diff --git a/lib/libc/mman/munmap.c b/lib/libc/mman/munmap.c new file mode 100644 index 00000000..6929fc64 --- /dev/null +++ b/lib/libc/mman/munmap.c @@ -0,0 +1,8 @@ +#include <sys/mman.h> +#include <syscall.h> +#include <features.h> + +int munmap(void *addr, size_t len) +{ + return syscall(munmap, addr, len); +} diff --git a/lib/libc/mman/posix_madvise.c b/lib/libc/mman/posix_madvise.c new file mode 100644 index 00000000..a19adec2 --- /dev/null +++ b/lib/libc/mman/posix_madvise.c @@ -0,0 +1,7 @@ +#include <sys/mman.h> +#include <syscall.h> + +int posix_madvise(void *addr, size_t len, int advice) +{ + return syscall(madvise, addr, len, advice); +} diff --git a/lib/libc/monetary/strfmon.c b/lib/libc/monetary/strfmon.c new file mode 100644 index 00000000..8ba0d48d --- /dev/null +++ b/lib/libc/monetary/strfmon.c @@ -0,0 +1,131 @@ +// Orginal source: +// https://git.musl-libc.org/cgit/musl/tree/src/monetary/strfmon.c +// +// ---------------------------------------------------------------------- +// Copyright © 2005-2020 Rich Felker, et al. +// +// Permission is hereby granted, free of charge, to any person obtaining +// a copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to +// permit persons to whom the Software is furnished to do so, subject to +// the following conditions: +// +// The above copyright notice and this permission notice shall be +// included in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE +// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +// ---------------------------------------------------------------------- + +#include <libc.h> +#include <ctype.h> +#include <errno.h> +#include <stdio.h> +#include <stdarg.h> +#include <monetary.h> + +static ssize_t vstrfmon_l(char *s, size_t n, const char *fmt, va_list ap) +{ + size_t l; + double x; + int fill, nogrp, negpar, nosym, left, intl; + int lp, rp, w, fw; + char *s0 = s; + for (; n && *fmt;) { + if (*fmt != '%') { +literal: + *s++ = *fmt++; + n--; + continue; + } + fmt++; + if (*fmt == '%') + goto literal; + + fill = ' '; + nogrp = 0; + negpar = 0; + nosym = 0; + left = 0; + for (;; fmt++) { + switch (*fmt) { + case '=': + fill = *++fmt; + continue; + case '^': + nogrp = 1; + continue; + case '(': + negpar = 1; + case '+': + continue; + case '!': + nosym = 1; + continue; + case '-': + left = 1; + continue; + } + break; + } + + for (fw = 0; isdigit(*fmt); fmt++) + fw = 10 * fw + (*fmt - '0'); + lp = 0; + rp = 2; + if (*fmt == '#') + for (lp = 0, fmt++; isdigit(*fmt); fmt++) + lp = 10 * lp + (*fmt - '0'); + if (*fmt == '.') + for (rp = 0, fmt++; isdigit(*fmt); fmt++) + rp = 10 * rp + (*fmt - '0'); + + intl = *fmt++ == 'i'; + + w = lp + 1 + rp; + if (!left && fw > w) + w = fw; + + x = va_arg(ap, double); + l = snprintf(s, n, "%*.*f", w, rp, x); + if (l >= n) { + errno = E2BIG; + return -1; + } + s += l; + n -= l; + } + return s - s0; +} + +ssize_t strfmon(char *restrict s, size_t n, const char *restrict fmt, ...) +{ + va_list ap; + ssize_t ret; + + va_start(ap, fmt); + ret = vstrfmon_l(s, n, fmt, ap); + va_end(ap); + + return ret; +} + +weak ssize_t strfmon_l(char *restrict s, size_t n, locale_t unused loc, + const char *restrict fmt, ...) +{ + va_list ap; + ssize_t ret; + + va_start(ap, fmt); + ret = vstrfmon_l(s, n, fmt, ap); + va_end(ap); + + return ret; +} diff --git a/lib/libc/msg/msgctl.c b/lib/libc/msg/msgctl.c new file mode 100644 index 00000000..fd25cae4 --- /dev/null +++ b/lib/libc/msg/msgctl.c @@ -0,0 +1,8 @@ +#include <endian.h> +#include <sys/msg.h> +#include <syscall.h> + +int msgctl(int msqid, int cmd, struct msqid_ds *buf) +{ + return syscall(msgctl, msqid, cmd, buf); +} diff --git a/lib/libc/poll/poll.c b/lib/libc/poll/poll.c new file mode 100644 index 00000000..4ff90aa6 --- /dev/null +++ b/lib/libc/poll/poll.c @@ -0,0 +1,7 @@ +#include <poll.h> +#include <syscall.h> + +int poll(struct pollfd fds[], nfds_t nfds, int timeout) +{ + return syscall(poll, fds, nfds, timeout); +} diff --git a/lib/libc/poll/ppoll.c b/lib/libc/poll/ppoll.c new file mode 100644 index 00000000..a5ab9d5e --- /dev/null +++ b/lib/libc/poll/ppoll.c @@ -0,0 +1,9 @@ +#include <poll.h> +#include <syscall.h> + +int ppoll(struct pollfd fds[], nfds_t nfds, + const struct timespec *restrict timeout, + const sigset_t *restrict sigmask) +{ + return syscall(ppoll, fds, nfds, timeout, sigmask, 8); +} diff --git a/lib/libc/pwd/getgrgid.c b/lib/libc/pwd/getgrgid.c new file mode 100644 index 00000000..5e825c12 --- /dev/null +++ b/lib/libc/pwd/getgrgid.c @@ -0,0 +1,15 @@ +#include <pwd.h> +#include <stddef.h> +#include <limits.h> + +struct passwd *getpwuid(uid_t uid) +{ + static struct passwd pwd; + static char buf[LINE_MAX * 4]; + struct passwd *res; + + if (getpwuid_r(uid, &pwd, buf, sizeof(buf), &res) != 0) + return NULL; + + return res; +} diff --git a/lib/libc/pwd/getgrgid_r.c b/lib/libc/pwd/getgrgid_r.c new file mode 100644 index 00000000..33705fdf --- /dev/null +++ b/lib/libc/pwd/getgrgid_r.c @@ -0,0 +1,72 @@ +#include <pwd.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <errno.h> +#include <limits.h> + +static char *copy_str(const char *src, char **buf, size_t *buflen) +{ + size_t len = strlen(src) + 1; + if (len > *buflen) + return NULL; + char *dst = *buf; + memcpy(dst, src, len); + *buf += len; + *buflen -= len; + return dst; +} + +int getpwuid_r(uid_t uid, struct passwd *pwd, char *buf, size_t buflen, + struct passwd **result) +{ + FILE *stream = fopen("/etc/passwd", "r"); + if (stream == NULL) { + *result = NULL; + return errno; + } + + char line[LINE_MAX]; + + while (fgets(line, sizeof(line), stream)) { + char *name = strtok(line, ":"); + char *passwd = strtok(NULL, ":"); + char *uid_str = strtok(NULL, ":"); + char *gid_str = strtok(NULL, ":"); + strtok(NULL, ":"); + char *dir = strtok(NULL, ":"); + char *shell = strtok(NULL, "\n"); + + if (name == NULL || passwd == NULL || uid_str == NULL || + gid_str == NULL) + continue; + + uid_t file_uid = (uid_t)strtoul(uid_str, NULL, 10); + if (file_uid != uid) + continue; + + size_t rem = buflen; + + pwd->pw_name = copy_str(name, &buf, &rem); + pwd->pw_dir = copy_str(dir ? dir : "", &buf, &rem); + pwd->pw_shell = copy_str(shell ? shell : "", &buf, &rem); + pwd->pw_uid = file_uid; + pwd->pw_gid = (gid_t)strtoul(gid_str, NULL, 10); + pwd->pw_uid = file_uid; + pwd->pw_gid = (gid_t)strtoul(gid_str, NULL, 10); + + if (pwd->pw_name == NULL || pwd->pw_dir == NULL || + pwd->pw_shell == NULL) { + fclose(stream); + return ERANGE; + } + + fclose(stream); + *result = pwd; + return 0; + } + + fclose(stream); + *result = NULL; + return 0; +} diff --git a/lib/libc/select/pselect.c b/lib/libc/select/pselect.c new file mode 100644 index 00000000..75d31d87 --- /dev/null +++ b/lib/libc/select/pselect.c @@ -0,0 +1,11 @@ +#include <sys/select.h> +#include <stdint.h> +#include <syscall.h> + +int pselect(int nfds, fd_set *restrict readfds, fd_set *restrict writefds, + fd_set *restrict errorfds, const struct timespec *restrict timeout, + const sigset_t *restrict sigmask) +{ + return syscall(pselect6, nfds, readfds, writefds, errorfds, timeout, + ((syscall_arg_t[]){ (uintptr_t)sigmask, 8 })); +} diff --git a/lib/libc/select/select.c b/lib/libc/select/select.c new file mode 100644 index 00000000..4e9f2f99 --- /dev/null +++ b/lib/libc/select/select.c @@ -0,0 +1,9 @@ +#include <sys/select.h> +#include <syscall.h> + +int select(int nfds, fd_set *restrict readfds, fd_set *restrict writefds, + fd_set *restrict errorfds, struct timeval *restrict timeout) +{ + return syscall(pselect6, nfds, readfds, writefds, errorfds, timeout, + ((syscall_arg_t[]){ 0, 8 })); +} diff --git a/lib/libc/sem/semctl.c b/lib/libc/sem/semctl.c new file mode 100644 index 00000000..78a1adf8 --- /dev/null +++ b/lib/libc/sem/semctl.c @@ -0,0 +1,24 @@ +#include <stdarg.h> +#include <stddef.h> +#include <sys/ipc.h> +#include <sys/sem.h> +#include <syscall.h> + +int semctl(int semid, int semnum, int cmd, ...) +{ + va_list ap; + struct semid_ds *buf = NULL; + + switch (cmd) { + case SETVAL: + case GETALL: + case SETALL: + case IPC_SET: + case IPC_STAT: + va_start(ap, cmd); + buf = va_arg(ap, struct semid_ds *); + va_end(ap); + } + + return syscall(semctl, semid, semnum, cmd, buf); +} diff --git a/lib/libc/sem/semget.c b/lib/libc/sem/semget.c new file mode 100644 index 00000000..75e1bab9 --- /dev/null +++ b/lib/libc/sem/semget.c @@ -0,0 +1,7 @@ +#include <sys/sem.h> +#include <syscall.h> + +int semget(key_t key, int nsems, int semflg) +{ + return syscall(semget, key, nsems, semflg); +} diff --git a/lib/libc/sem/semop.c b/lib/libc/sem/semop.c new file mode 100644 index 00000000..82e956dc --- /dev/null +++ b/lib/libc/sem/semop.c @@ -0,0 +1,7 @@ +#include <sys/sem.h> +#include <syscall.h> + +int semop(int semid, struct sembuf *sops, size_t nsops) +{ + return syscall(semop, semid, sops, nsops); +} diff --git a/lib/libc/setjmp/siglongjmp.c b/lib/libc/setjmp/siglongjmp.c new file mode 100644 index 00000000..4f39cc37 --- /dev/null +++ b/lib/libc/setjmp/siglongjmp.c @@ -0,0 +1,6 @@ +#include <setjmp.h> + +_Noreturn void siglongjmp(sigjmp_buf env, int val) +{ + longjmp(env, val); +} diff --git a/lib/libc/signal/kill.c b/lib/libc/signal/kill.c new file mode 100644 index 00000000..d2a7ae68 --- /dev/null +++ b/lib/libc/signal/kill.c @@ -0,0 +1,7 @@ +#include <signal.h> +#include <syscall.h> + +int kill(pid_t pid, int sig) +{ + return syscall(kill, pid, sig); +} diff --git a/lib/libc/signal/killpg.c b/lib/libc/signal/killpg.c new file mode 100644 index 00000000..27b7a76a --- /dev/null +++ b/lib/libc/signal/killpg.c @@ -0,0 +1,13 @@ +#include <errno.h> +#include <signal.h> +#include <syscall.h> + +int killpg(pid_t pgrp, int sig) +{ + if (pgrp < 0) { + errno = EINVAL; + return -1; + } + + return kill(-pgrp, sig); +} diff --git a/lib/libc/signal/psiginfo.c b/lib/libc/signal/psiginfo.c new file mode 100644 index 00000000..47e10508 --- /dev/null +++ b/lib/libc/signal/psiginfo.c @@ -0,0 +1,6 @@ +#include <signal.h> + +void psiginfo(const siginfo_t *pinfo, const char *message) +{ + psignal(pinfo->si_signo, message); +} diff --git a/lib/libc/signal/psignal.c b/lib/libc/signal/psignal.c new file mode 100644 index 00000000..200b353c --- /dev/null +++ b/lib/libc/signal/psignal.c @@ -0,0 +1,9 @@ +#include <stdio.h> +#include <string.h> +#include <signal.h> + +void psignal(int signum, const char *message) +{ + fprintf(stderr, "%s%s%s\n", message ? message : "", message ? ": " : "", + strsignal(signum)); +} diff --git a/lib/libc/signal/pthread_kill.c b/lib/libc/signal/pthread_kill.c new file mode 100644 index 00000000..9323a869 --- /dev/null +++ b/lib/libc/signal/pthread_kill.c @@ -0,0 +1,18 @@ +#include <thread.h> +#include <asm-generic/signal.h> +#include <syscall.h> + +typedef struct __thread_self *pthread_t; + +int pthread_kill(pthread_t thread, int sig) +{ + if (sig < 0 || sig > _NSIG) { + return EINVAL; + } + + if (thread->tid == 0) { + return 0; + } + + return syscall(tkill, thread->tid, sig); +} diff --git a/lib/libc/signal/pthread_sigmask.c b/lib/libc/signal/pthread_sigmask.c new file mode 100644 index 00000000..1b83e1fe --- /dev/null +++ b/lib/libc/signal/pthread_sigmask.c @@ -0,0 +1,23 @@ +#include <errno.h> +#include <asm-generic/signal.h> +#include <libc.h> + +int sigdelset(sigset_t *, int); +int sigismember(const sigset_t *, int); +int sigprocmask(int, const sigset_t *restrict, sigset_t *restrict); + +int pthread_sigmask(int how, const sigset_t *restrict set, + sigset_t *restrict oset) +{ + sigset_t lset; + + if (set != NULL && (unlikely(sigismember(set, SIGRTMIN)) || + unlikely(sigismember(set, SIGRTMIN + 1)))) { + lset = *set; + sigdelset(&lset, SIGRTMIN); + sigdelset(&lset, SIGRTMIN + 1); + set = &lset; + } + + return sigprocmask(how, set, oset) == -1 ? errno : 0; +} diff --git a/lib/libc/signal/raise.c b/lib/libc/signal/raise.c new file mode 100644 index 00000000..3bdbc9cc --- /dev/null +++ b/lib/libc/signal/raise.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <signal.h> + +int raise(int sig) +{ + return kill(getpid(), sig); +} diff --git a/lib/libc/signal/sig2str.c b/lib/libc/signal/sig2str.c new file mode 100644 index 00000000..209cb4c3 --- /dev/null +++ b/lib/libc/signal/sig2str.c @@ -0,0 +1,33 @@ +#include <stdio.h> +#include <string.h> +#include <asm-generic/signal.h> +#include <__signal.h> + +int sig2str(int signum, char *str) +{ + if (signum >= SIGHUP && signum <= SIGSYS) { + strcpy(str, __sys_signame[signum - SIGHUP]); + return 0; + } + + if (signum == SIGRTMIN) { + strcpy(str, "SIGRTMIN"); + return 0; + } + + if (signum == SIGRTMAX) { + strcpy(str, "RTMAX"); + return 0; + } + + if (signum > SIGRTMIN && signum < SIGRTMAX) { + if (signum - SIGRTMIN <= SIGRTMAX - signum) { + sprintf(str, "RTMIN+%d", signum - SIGRTMIN); + } else { + sprintf(str, "RTMAX-%d", SIGRTMAX - signum); + } + return 0; + } + + return -1; +} diff --git a/lib/libc/signal/sigaction.c b/lib/libc/signal/sigaction.c new file mode 100644 index 00000000..f8377ebb --- /dev/null +++ b/lib/libc/signal/sigaction.c @@ -0,0 +1,8 @@ +#include <signal.h> +#include <syscall.h> + +int sigaction(int sig, const struct sigaction *restrict act, + struct sigaction *restrict oact) +{ + return syscall(rt_sigaction, sig, act, oact, sizeof(sigset_t)); +} diff --git a/lib/libc/signal/sigaddset.c b/lib/libc/signal/sigaddset.c new file mode 100644 index 00000000..33e74bd0 --- /dev/null +++ b/lib/libc/signal/sigaddset.c @@ -0,0 +1,10 @@ +#include <signal.h> + +int sigaddset(sigset_t *set, int signo) +{ + if (signo < 1 || signo > 64) { + return -1; + } + *set |= (1ULL << (signo - 1)); + return 0; +} diff --git a/lib/libc/signal/sigemptyset.c b/lib/libc/signal/sigemptyset.c new file mode 100644 index 00000000..6552bf45 --- /dev/null +++ b/lib/libc/signal/sigemptyset.c @@ -0,0 +1,10 @@ +#include <signal.h> + +int sigemptyset(sigset_t *set) +{ + if (!set) + return -1; + *set = 0; + + return 0; +} diff --git a/lib/libc/signal/sigismember.c b/lib/libc/signal/sigismember.c new file mode 100644 index 00000000..8adf5fab --- /dev/null +++ b/lib/libc/signal/sigismember.c @@ -0,0 +1,18 @@ +#include <asm-generic/signal.h> + +typedef __UINT64_TYPE__ __sigset_t; + +#define __sigmask(sig) (((__sigset_t)1) << ((sig) - 1)) +#define __sigismember(set, sig) \ + (__extension__({ \ + __sigset_t __mask = __sigmask(sig); \ + *(set) & __mask ? 1 : 0; \ + })) + +int sigismember(const __sigset_t *set, int signo) +{ + if (signo < 1 || signo > _NSIG) + return -1; + + return __sigismember((const __sigset_t *)set, signo); +} diff --git a/lib/libc/signal/signal.c b/lib/libc/signal/signal.c new file mode 100644 index 00000000..c2f578eb --- /dev/null +++ b/lib/libc/signal/signal.c @@ -0,0 +1,14 @@ +#include <signal.h> + +void (*signal(int sig, void (*func)(int)))(int) +{ + struct sigaction act, oact; + + act.sa_handler = func; + act.sa_flags = SA_RESTART; + + if (sigaction(sig, &act, &oact) < 0) + return SIG_ERR; + + return oact.sa_handler; +} diff --git a/lib/libc/signal/sigpending.c b/lib/libc/signal/sigpending.c new file mode 100644 index 00000000..b57f4adf --- /dev/null +++ b/lib/libc/signal/sigpending.c @@ -0,0 +1,7 @@ +#include <signal.h> +#include <syscall.h> + +int sigpending(sigset_t *set) +{ + return syscall(rt_sigpending, set); +} diff --git a/lib/libc/signal/sigprocmask.c b/lib/libc/signal/sigprocmask.c new file mode 100644 index 00000000..54063b9d --- /dev/null +++ b/lib/libc/signal/sigprocmask.c @@ -0,0 +1,17 @@ +#include <signal.h> +#include <syscall.h> + +int sigprocmask(int how, const sigset_t *restrict set, sigset_t *restrict oset) +{ + long ret; + sigset_t oldset = { 0 }; + + ret = syscall(rt_sigprocmask, how, set, &oldset, sizeof(sigset_t)); + + if (ret < 0) + return -1; + + if (oset) + *oset = oldset; + return 0; +} diff --git a/lib/libc/signal/sigqueue.c b/lib/libc/signal/sigqueue.c new file mode 100644 index 00000000..9e5b6ddd --- /dev/null +++ b/lib/libc/signal/sigqueue.c @@ -0,0 +1,15 @@ +#include <signal.h> +#include <errno.h> + +int sigprocmask(int how, const sigset_t *restrict set, sigset_t *restrict old) +{ + int r = pthread_sigmask(how, set, old); + + if (r == 0) { + return r; + } + + errno = r; + + return -1; +} diff --git a/lib/libc/signal/sigsuspend.c b/lib/libc/signal/sigsuspend.c new file mode 100644 index 00000000..1e6b88a6 --- /dev/null +++ b/lib/libc/signal/sigsuspend.c @@ -0,0 +1,7 @@ +#include <signal.h> +#include <syscall.h> + +int sigsuspend(const sigset_t *sigmask) +{ + return syscall(rt_sigsuspend, sigmask, sizeof(sigset_t)); +} diff --git a/lib/libc/signal/sigtimedwait.c b/lib/libc/signal/sigtimedwait.c new file mode 100644 index 00000000..d55a4310 --- /dev/null +++ b/lib/libc/signal/sigtimedwait.c @@ -0,0 +1,10 @@ +#include <signal.h> +#include <syscall.h> + +#define _NSIG 64 + +int sigtimedwait(const sigset_t *restrict set, siginfo_t *restrict info, + const struct timespec *restrict timeout) +{ + return syscall(rt_sigtimedwait, set, info, timeout, _NSIG / 8); +} diff --git a/lib/libc/signal/sigwait.c b/lib/libc/signal/sigwait.c new file mode 100644 index 00000000..59b0dd6c --- /dev/null +++ b/lib/libc/signal/sigwait.c @@ -0,0 +1,14 @@ +#include <signal.h> + +int sigwait(const sigset_t *restrict mask, int *restrict sig) +{ + siginfo_t si; + + if (sigtimedwait(mask, &si, 0) < 0) { + return -1; + } + + *sig = si.si_signo; + + return 0; +} diff --git a/lib/libc/signal/sigwaitinfo.c b/lib/libc/signal/sigwaitinfo.c new file mode 100644 index 00000000..bb51f8b5 --- /dev/null +++ b/lib/libc/signal/sigwaitinfo.c @@ -0,0 +1,6 @@ +#include <signal.h> + +int sigwaitinfo(const sigset_t *restrict mask, siginfo_t *restrict si) +{ + return sigtimedwait(mask, si, 0); +} diff --git a/lib/libc/signal/str2sig.c b/lib/libc/signal/str2sig.c new file mode 100644 index 00000000..288948d7 --- /dev/null +++ b/lib/libc/signal/str2sig.c @@ -0,0 +1,52 @@ +#include <__signal.h> +#include <errno.h> +#include <stdlib.h> +#include <string.h> +#include <stdbool.h> +#include <asm-generic/signal.h> + +int str2sig(const char *restrict str, int *restrict pnum) +{ + for (size_t i = SIGHUP; i <= SIGSYS; ++i) { + if (!strcmp(str, __sys_signame[i])) { + *pnum = i; + return 0; + } + } + + if (strcmp(str, "RTMIN") == 0) { + *pnum = SIGRTMIN; + return 0; + } + + if (strcmp(str, "RTMAX") == 0) { + *pnum = SIGRTMAX; + return 0; + } + + int base = 0; + if (strncmp(str, "RTMIN+", 6) == 0) { + base = SIGRTMIN; + str += 5; + } else if (strncmp(str, "RTMAX-", 6) == 0) { + base = SIGRTMAX; + str += 5; + } + + char *end = NULL; + errno = 0; + int offset = strtol(str, &end, 10); + if (errno || *end) { + return -1; + } + + int result = base + offset; + bool regular = (base == 0 && result >= SIGHUP && result <= SIGSYS); + bool realtime = (result >= SIGRTMIN && result <= SIGRTMAX); + if (!regular && !realtime) { + return -1; + } + + *pnum = result; + return 0; +} diff --git a/lib/libc/socket/accept.c b/lib/libc/socket/accept.c new file mode 100644 index 00000000..61c469c8 --- /dev/null +++ b/lib/libc/socket/accept.c @@ -0,0 +1,8 @@ +#include <sys/socket.h> +#include <syscall.h> + +int accept(int socket, struct sockaddr *restrict address, + socklen_t *restrict address_len) +{ + return syscall(accept, socket, address, address_len); +} diff --git a/lib/libc/socket/accept4.c b/lib/libc/socket/accept4.c new file mode 100644 index 00000000..8171098b --- /dev/null +++ b/lib/libc/socket/accept4.c @@ -0,0 +1,8 @@ +#include <sys/socket.h> +#include <syscall.h> + +int accept4(int socket, struct sockaddr *restrict address, + socklen_t *restrict address_len, int flag) +{ + return syscall(accept4, socket, address, address_len, flag); +} diff --git a/lib/libc/socket/bind.c b/lib/libc/socket/bind.c new file mode 100644 index 00000000..111ac321 --- /dev/null +++ b/lib/libc/socket/bind.c @@ -0,0 +1,7 @@ +#include <sys/socket.h> +#include <syscall.h> + +int bind(int socket, const struct sockaddr *address, socklen_t address_len) +{ + return syscall(bind, socket, address, address_len); +} diff --git a/lib/libc/socket/connect.c b/lib/libc/socket/connect.c new file mode 100644 index 00000000..fc4502cb --- /dev/null +++ b/lib/libc/socket/connect.c @@ -0,0 +1,7 @@ +#include <sys/socket.h> +#include <syscall.h> + +int connect(int socket, const struct sockaddr *address, socklen_t address_len) +{ + return syscall(connect, socket, address, address_len); +} diff --git a/lib/libc/socket/getpeername.c b/lib/libc/socket/getpeername.c new file mode 100644 index 00000000..4b694220 --- /dev/null +++ b/lib/libc/socket/getpeername.c @@ -0,0 +1,8 @@ +#include <sys/socket.h> +#include <syscall.h> + +int getpeername(int socket, struct sockaddr *restrict address, + socklen_t *restrict address_len) +{ + return syscall(getpeername, socket, address, address_len); +} diff --git a/lib/libc/socket/getsockname.c b/lib/libc/socket/getsockname.c new file mode 100644 index 00000000..d8b356fb --- /dev/null +++ b/lib/libc/socket/getsockname.c @@ -0,0 +1,8 @@ +#include <sys/socket.h> +#include <syscall.h> + +int getsockname(int socket, struct sockaddr *restrict address, + socklen_t *restrict address_len) +{ + return syscall(getsockname, socket, address, address_len); +} diff --git a/lib/libc/socket/getsockopt.c b/lib/libc/socket/getsockopt.c new file mode 100644 index 00000000..2ab56774 --- /dev/null +++ b/lib/libc/socket/getsockopt.c @@ -0,0 +1,9 @@ +#include <sys/socket.h> +#include <syscall.h> + +int getsockopt(int socket, int level, int option_name, + void *restrict option_value, socklen_t *restrict option_len) +{ + return syscall(getsockopt, socket, level, option_name, option_value, + option_len); +} diff --git a/lib/libc/socket/listen.c b/lib/libc/socket/listen.c new file mode 100644 index 00000000..3b107450 --- /dev/null +++ b/lib/libc/socket/listen.c @@ -0,0 +1,7 @@ +#include <sys/socket.h> +#include <syscall.h> + +int listen(int socket, int backlog) +{ + return syscall(listen, backlog); +} diff --git a/lib/libc/socket/recv.c b/lib/libc/socket/recv.c new file mode 100644 index 00000000..87bec811 --- /dev/null +++ b/lib/libc/socket/recv.c @@ -0,0 +1,7 @@ +#include <sys/socket.h> +#include <syscall.h> + +ssize_t recv(int socket, void *buffer, size_t length, int flags) +{ + return syscall(recvfrom, socket, buffer, length, flags, 0, 0); +} diff --git a/lib/libc/socket/recvfrom.c b/lib/libc/socket/recvfrom.c new file mode 100644 index 00000000..a3faa0bb --- /dev/null +++ b/lib/libc/socket/recvfrom.c @@ -0,0 +1,10 @@ +#include <sys/socket.h> +#include <syscall.h> + +ssize_t recvfrom(int socket, void *restrict buffer, size_t length, int flags, + struct sockaddr *restrict address, + socklen_t *restrict address_len) +{ + return syscall(recvfrom, socket, buffer, length, flags, address, + address_len); +} diff --git a/lib/libc/socket/recvmsg.c b/lib/libc/socket/recvmsg.c new file mode 100644 index 00000000..29183f35 --- /dev/null +++ b/lib/libc/socket/recvmsg.c @@ -0,0 +1,7 @@ +#include <sys/socket.h> +#include <syscall.h> + +ssize_t recvmsg(int socket, struct msghdr *message, int flags) +{ + return syscall(recvmsg, socket, message, flags); +} diff --git a/lib/libc/socket/send.c b/lib/libc/socket/send.c new file mode 100644 index 00000000..a2760a2f --- /dev/null +++ b/lib/libc/socket/send.c @@ -0,0 +1,7 @@ +#include <sys/socket.h> +#include <syscall.h> + +ssize_t send(int socket, const void *buffer, size_t length, int flags) +{ + return syscall(sendto, socket, buffer, length, flags, 0, 0); +} diff --git a/lib/libc/socket/sendmsg.c b/lib/libc/socket/sendmsg.c new file mode 100644 index 00000000..6414021c --- /dev/null +++ b/lib/libc/socket/sendmsg.c @@ -0,0 +1,7 @@ +#include <syscall.h> +#include <sys/socket.h> + +ssize_t sendmsg(int socket, const struct msghdr *message, int flags) +{ + return syscall(sendmsg, socket, message, flags); +} diff --git a/lib/libc/socket/sendto.c b/lib/libc/socket/sendto.c new file mode 100644 index 00000000..f9628f50 --- /dev/null +++ b/lib/libc/socket/sendto.c @@ -0,0 +1,9 @@ +#include <sys/socket.h> +#include <syscall.h> + +ssize_t sendto(int socket, const void *message, size_t length, int flags, + const struct sockaddr *dest_addr, socklen_t dest_len) +{ + return syscall(sendto, socket, message, length, flags, dest_addr, + dest_len); +} diff --git a/lib/libc/socket/setsockopt.c b/lib/libc/socket/setsockopt.c new file mode 100644 index 00000000..8f25bab4 --- /dev/null +++ b/lib/libc/socket/setsockopt.c @@ -0,0 +1,9 @@ +#include <sys/socket.h> +#include <syscall.h> + +int setsockopt(int socket, int level, int option_name, const void *option_value, + socklen_t option_len) +{ + return syscall(setsockopt, socket, level, option_name, option_value, + option_len); +} diff --git a/lib/libc/socket/shutdown.c b/lib/libc/socket/shutdown.c new file mode 100644 index 00000000..96c8053c --- /dev/null +++ b/lib/libc/socket/shutdown.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int shutdown(int socket, int how) +{ + return syscall(shutdown, socket, how); +} diff --git a/lib/libc/socket/sockatmark.c b/lib/libc/socket/sockatmark.c new file mode 100644 index 00000000..f7178aa0 --- /dev/null +++ b/lib/libc/socket/sockatmark.c @@ -0,0 +1,8 @@ +#include <syscall.h> +#include <asm-generic/sockios.h> + +int sockatmark(int s) +{ + int arg = 0; + return syscall(ioctl, s, SIOCATMARK, &arg) < 0 ? -1 : arg; +} diff --git a/lib/libc/socket/socket.c b/lib/libc/socket/socket.c new file mode 100644 index 00000000..34b5d67b --- /dev/null +++ b/lib/libc/socket/socket.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int socket(int domain, int type, int protocol) +{ + return syscall(socket, domain, type, protocol); +} diff --git a/lib/libc/socket/socketpair.c b/lib/libc/socket/socketpair.c new file mode 100644 index 00000000..6e78b30b --- /dev/null +++ b/lib/libc/socket/socketpair.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int socketpair(int domain, int type, int protocol, int socket_vector[2]) +{ + return syscall(socketpair, domain, type, protocol, socket_vector); +} diff --git a/lib/libc/stat/chmod.c b/lib/libc/stat/chmod.c new file mode 100644 index 00000000..6b7283e2 --- /dev/null +++ b/lib/libc/stat/chmod.c @@ -0,0 +1,7 @@ +#include <sys/stat.h> +#include <syscall.h> + +int chmod(const char *path, mode_t mode) +{ + return syscall(chmod, path, mode); +} diff --git a/lib/libc/stat/fchmod.c b/lib/libc/stat/fchmod.c new file mode 100644 index 00000000..22593fd6 --- /dev/null +++ b/lib/libc/stat/fchmod.c @@ -0,0 +1,7 @@ +#include <sys/stat.h> +#include <syscall.h> + +int fchmod(int fildes, mode_t mode) +{ + return syscall(fchmod, fildes, mode); +} diff --git a/lib/libc/stat/fchmodat.c b/lib/libc/stat/fchmodat.c new file mode 100644 index 00000000..71a3c0c5 --- /dev/null +++ b/lib/libc/stat/fchmodat.c @@ -0,0 +1,7 @@ +#include <sys/stat.h> +#include <syscall.h> + +int fchmodat(int fd, const char *path, mode_t mode, int flag) +{ + return syscall(fchmodat2, fd, path, mode, flag); +} diff --git a/lib/libc/stat/fstat.c b/lib/libc/stat/fstat.c new file mode 100644 index 00000000..7a9fb4e4 --- /dev/null +++ b/lib/libc/stat/fstat.c @@ -0,0 +1,8 @@ +#include <fcntl.h> +#include <sys/stat.h> +#include <syscall.h> + +int fstat(int fildes, struct stat *buf) +{ + return fstatat(fildes, "", buf, 0); +} diff --git a/lib/libc/stat/fstatat.c b/lib/libc/stat/fstatat.c new file mode 100644 index 00000000..06b00163 --- /dev/null +++ b/lib/libc/stat/fstatat.c @@ -0,0 +1,46 @@ +#include <sys/stat.h> +#include <syscall.h> + +#include <linux/stat.h> + +#define makedev(major, minor) \ + ((((major) & 0xfffff000ULL) << 32) | \ + (((major) & 0x00000fffULL) << 8) | \ + (((minor) & 0xffffff00ULL) << 12) | (((minor) & 0x000000ffULL))) + +int fstatat(int fd, const char *restrict path, struct stat *restrict buf, + int flag) +{ + int ret; + struct statx stx = { 0 }; + + ret = syscall(statx, fd, path, flag, 0x7ff, &stx); + + if (ret == 0) { + if (stx.stx_mask & STATX_BASIC_STATS) { + buf->st_dev = + makedev(stx.stx_dev_major, stx.stx_dev_minor); + buf->st_ino = stx.stx_ino; + buf->st_mode = stx.stx_mode; + buf->st_nlink = stx.stx_nlink; + buf->st_uid = stx.stx_uid; + buf->st_gid = stx.stx_gid; + buf->st_rdev = + makedev(stx.stx_rdev_major, stx.stx_rdev_minor); + buf->st_size = stx.stx_size; + buf->st_atim.tv_sec = stx.stx_atime.tv_sec; + buf->st_atim.tv_nsec = stx.stx_atime.tv_nsec; + buf->st_mtim.tv_sec = stx.stx_mtime.tv_sec; + buf->st_mtim.tv_nsec = stx.stx_mtime.tv_nsec; + buf->st_ctim.tv_sec = stx.stx_ctime.tv_sec; + buf->st_ctim.tv_nsec = stx.stx_ctime.tv_nsec; + buf->st_blksize = stx.stx_blksize; + buf->st_blocks = stx.stx_blocks; + } else { + ret = -1; // Indicate failure if STATX_BASIC_STATS is + // not set + } + } + + return ret; +} diff --git a/lib/libc/stat/futimens.c b/lib/libc/stat/futimens.c new file mode 100644 index 00000000..974d2eb7 --- /dev/null +++ b/lib/libc/stat/futimens.c @@ -0,0 +1,7 @@ +#include <stddef.h> +#include <sys/stat.h> + +int futimens(int fd, const struct timespec times[2]) +{ + return utimensat(fd, NULL, times, 0); +} diff --git a/lib/libc/stat/lstat.c b/lib/libc/stat/lstat.c new file mode 100644 index 00000000..a188f78d --- /dev/null +++ b/lib/libc/stat/lstat.c @@ -0,0 +1,7 @@ +#include <fcntl.h> +#include <sys/stat.h> + +int lstat(const char *restrict path, struct stat *restrict buf) +{ + return fstatat(AT_FDCWD, path, buf, AT_SYMLINK_NOFOLLOW); +} diff --git a/lib/libc/stat/mkdir.c b/lib/libc/stat/mkdir.c new file mode 100644 index 00000000..1f97fb3f --- /dev/null +++ b/lib/libc/stat/mkdir.c @@ -0,0 +1,12 @@ +#include <fcntl.h> +#include <syscall.h> +#include <sys/stat.h> + +int mkdir(const char *path, mode_t mode) +{ +#ifdef __NR_mkdir + return syscall(mkdir, path, mode); +#else + return syscall(mkdirat, AT_FDCWD, path, mode); +#endif +} diff --git a/lib/libc/stat/mkdirat.c b/lib/libc/stat/mkdirat.c new file mode 100644 index 00000000..d129008b --- /dev/null +++ b/lib/libc/stat/mkdirat.c @@ -0,0 +1,8 @@ +#include <fcntl.h> +#include <syscall.h> +#include <sys/stat.h> + +int mkdirat(int fd, const char *path, mode_t mode) +{ + return syscall(mkdirat, fd, path, mode); +} diff --git a/lib/libc/stat/mkfifo.c b/lib/libc/stat/mkfifo.c new file mode 100644 index 00000000..60efcf73 --- /dev/null +++ b/lib/libc/stat/mkfifo.c @@ -0,0 +1,6 @@ +#include <sys/stat.h> + +int mkfifo(const char *path, mode_t mode) +{ + return mknod(path, mode | S_IFIFO, 0); +} diff --git a/lib/libc/stat/mkfifoat.c b/lib/libc/stat/mkfifoat.c new file mode 100644 index 00000000..d3a1f970 --- /dev/null +++ b/lib/libc/stat/mkfifoat.c @@ -0,0 +1,6 @@ +#include <sys/stat.h> + +int mkfifoat(int fd, const char *path, mode_t mode) +{ + return mknodat(fd, path, mode | S_IFIFO, 0); +} diff --git a/lib/libc/stat/mknod.c b/lib/libc/stat/mknod.c new file mode 100644 index 00000000..1a4a5c6c --- /dev/null +++ b/lib/libc/stat/mknod.c @@ -0,0 +1,8 @@ +#include <fcntl.h> +#include <syscall.h> +#include <sys/stat.h> + +int mknod(const char *path, mode_t mode, dev_t dev) +{ + return syscall(mknodat, AT_FDCWD, path, mode, dev); +} diff --git a/lib/libc/stat/mknodat.c b/lib/libc/stat/mknodat.c new file mode 100644 index 00000000..9967248e --- /dev/null +++ b/lib/libc/stat/mknodat.c @@ -0,0 +1,7 @@ +#include <syscall.h> +#include <sys/stat.h> + +int mknodat(int fd, const char *path, mode_t mode, dev_t dev) +{ + return syscall(mknodat, fd, path, mode, dev); +} diff --git a/lib/libc/stat/stat.c b/lib/libc/stat/stat.c new file mode 100644 index 00000000..95bdf73d --- /dev/null +++ b/lib/libc/stat/stat.c @@ -0,0 +1,7 @@ +#include <fcntl.h> +#include <sys/stat.h> + +int stat(const char *restrict path, struct stat *restrict buf) +{ + return fstatat(AT_FDCWD, path, buf, 0); +} diff --git a/lib/libc/stat/umask.c b/lib/libc/stat/umask.c new file mode 100644 index 00000000..2724317a --- /dev/null +++ b/lib/libc/stat/umask.c @@ -0,0 +1,7 @@ +#include <sys/stat.h> +#include <syscall.h> + +mode_t umask(mode_t cmask) +{ + return syscall(umask, cmask); +} diff --git a/lib/libc/stat/utimensat.c b/lib/libc/stat/utimensat.c new file mode 100644 index 00000000..d51611a3 --- /dev/null +++ b/lib/libc/stat/utimensat.c @@ -0,0 +1,8 @@ +#include <time.h> +#include <syscall.h> + +int utimensat(int fd, const char *path, const struct timespec times[2], + int flag) +{ + return syscall(utimensat, fd, path, times, flag); +} diff --git a/lib/libc/statvfs/fstatvfs.c b/lib/libc/statvfs/fstatvfs.c new file mode 100644 index 00000000..8bf78d35 --- /dev/null +++ b/lib/libc/statvfs/fstatvfs.c @@ -0,0 +1,25 @@ +#include <__statvfs.h> +#include <syscall.h> +#include <asm-generic/statfs.h> + +int fstatvfs(int fildes, struct __statvfs *buf) +{ + struct statfs statfs; + + if (syscall(fstatfs, fildes, &statfs) < 0) + return -1; + + buf->f_bsize = statfs.f_bsize; + buf->f_frsize = statfs.f_frsize ? statfs.f_frsize : statfs.f_bsize; + buf->f_blocks = statfs.f_blocks; + buf->f_bfree = statfs.f_bfree; + buf->f_bavail = statfs.f_bavail; + buf->f_files = statfs.f_files; + buf->f_ffree = statfs.f_ffree; + buf->f_favail = statfs.f_ffree; + buf->f_fsid = statfs.f_fsid.val[0]; + buf->f_flag = statfs.f_flags; + buf->f_namemax = statfs.f_namelen; + + return 0; +} diff --git a/lib/libc/statvfs/statvfs.c b/lib/libc/statvfs/statvfs.c new file mode 100644 index 00000000..df8c9544 --- /dev/null +++ b/lib/libc/statvfs/statvfs.c @@ -0,0 +1,25 @@ +#include <__statvfs.h> +#include <syscall.h> +#include <asm-generic/statfs.h> + +int statvfs(const char *restrict path, struct __statvfs *restrict buf) +{ + struct statfs statfs; + + if (syscall(statfs, path, &statfs) < 0) + return -1; + + buf->f_bsize = statfs.f_bsize; + buf->f_frsize = statfs.f_frsize ? statfs.f_frsize : statfs.f_bsize; + buf->f_blocks = statfs.f_blocks; + buf->f_bfree = statfs.f_bfree; + buf->f_bavail = statfs.f_bavail; + buf->f_files = statfs.f_files; + buf->f_ffree = statfs.f_ffree; + buf->f_favail = statfs.f_ffree; + buf->f_fsid = statfs.f_fsid.val[0]; + buf->f_flag = statfs.f_flags; + buf->f_namemax = statfs.f_namelen; + + return 0; +} diff --git a/lib/libc/stdio/asprintf.c b/lib/libc/stdio/asprintf.c new file mode 100644 index 00000000..b868cce1 --- /dev/null +++ b/lib/libc/stdio/asprintf.c @@ -0,0 +1,12 @@ +#include <stdio.h> +#include <stdarg.h> + +int asprintf(char **restrict ptr, const char *restrict format, ...) +{ + int r; + va_list ap; + va_start(ap, format); + r = vasprintf(ptr, format, ap); + va_end(ap); + return r; +} diff --git a/lib/libc/stdio/clearerr.c b/lib/libc/stdio/clearerr.c new file mode 100644 index 00000000..a49e5c2d --- /dev/null +++ b/lib/libc/stdio/clearerr.c @@ -0,0 +1,10 @@ +#include <stdio.h> +#include <io.h> + +void clearerr(FILE *stream) +{ + if (stream == NULL) + return; + + stream->flags &= ~(_IO_ERR | _IO_EOF); +} diff --git a/lib/libc/stdio/dprintf.c b/lib/libc/stdio/dprintf.c new file mode 100644 index 00000000..10877b22 --- /dev/null +++ b/lib/libc/stdio/dprintf.c @@ -0,0 +1,12 @@ +#include <stdio.h> +#include <stdarg.h> + +int dprintf(int fildes, const char *restrict format, ...) +{ + int r; + va_list ap; + va_start(ap, format); + r = vdprintf(fildes, format, ap); + va_end(ap); + return r; +} diff --git a/lib/libc/stdio/dtoa.c b/lib/libc/stdio/dtoa.c new file mode 100644 index 00000000..9417fa8e --- /dev/null +++ b/lib/libc/stdio/dtoa.c @@ -0,0 +1,6249 @@ +/**************************************************************** + * + * The author of this software is David M. Gay. + * + * Copyright (c) 1991, 2000, 2001 by Lucent Technologies. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose without fee is hereby granted, provided that this entire notice + * is included in all copies of any software which is or includes a copy + * or modification of this software and in all copies of the supporting + * documentation for such software. + * + * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTY. IN PARTICULAR, NEITHER THE AUTHOR NOR LUCENT MAKES ANY + * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY + * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. + * + ***************************************************************/ + +/* Please send bug reports to David M. Gay (dmg at acm dot org, + * with " at " changed at "@" and " dot " changed to "."). */ + +/* On a machine with IEEE extended-precision registers, it is + * necessary to specify double-precision (53-bit) rounding precision + * before invoking strtod or dtoa. If the machine uses (the equivalent + * of) Intel 80x87 arithmetic, the call + * _control87(PC_53, MCW_PC); + * does this with many compilers. Whether this or another call is + * appropriate depends on the compiler; for this to work, it may be + * necessary to #include "float.h" or another system-dependent header + * file. When needed, this call avoids double rounding, which can + * cause one bit errors, e.g., with strtod on 8.3e26 or 6.3876e-16. + */ + +/* strtod for IEEE-, VAX-, and IBM-arithmetic machines. + * (Note that IEEE arithmetic is disabled by gcc's -ffast-math flag.) + * + * This strtod returns a nearest machine number to the input decimal + * string (or sets errno to ERANGE). With IEEE arithmetic, ties are + * broken by the IEEE round-even rule. Otherwise ties are broken by + * biased rounding (add half and chop). + * + * Inspired loosely by William D. Clinger's paper "How to Read Floating + * Point Numbers Accurately" [Proc. ACM SIGPLAN '90, pp. 92-101]. + * + * Modifications: + * + * 1. We only require IEEE, IBM, or VAX double-precision + * arithmetic (not IEEE double-extended). + * 2. We get by with floating-point arithmetic in a case that + * Clinger missed -- when we're computing d * 10^n + * for a small integer d and the integer n is not too + * much larger than 22 (the maximum integer k for which + * we can represent 10^k exactly), we may be able to + * compute (d*10^k) * 10^(e-k) with just one roundoff. + * 3. Rather than a bit-at-a-time adjustment of the binary + * result in the hard case, we use floating-point + * arithmetic to determine the adjustment to within + * one bit; only in really hard cases do we need to + * compute a second residual. + * 4. Because of 3., we don't need a large table of powers of 10 + * for ten-to-e (just some small tables, e.g. of 10^k + * for 0 <= k <= 22). + */ + +/* + * #define IEEE_8087 for IEEE-arithmetic machines where the least + * significant byte has the lowest address. + * #define IEEE_MC68k for IEEE-arithmetic machines where the most + * significant byte has the lowest address. + * #define Long int on machines with 32-bit ints and 64-bit longs. + * #define IBM for IBM mainframe-style floating-point arithmetic. + * #define VAX for VAX-style floating-point arithmetic (D_floating). + * #define No_leftright to omit left-right logic in fast floating-point + * computation of dtoa. This will cause dtoa modes 4 and 5 to be + * treated the same as modes 2 and 3 for some inputs. + * #define Honor_FLT_ROUNDS if FLT_ROUNDS can assume the values 2 or 3 + * and strtod and dtoa should round accordingly. Unless Trust_FLT_ROUNDS + * is also #defined, fegetround() will be queried for the rounding mode. + * Note that both FLT_ROUNDS and fegetround() are specified by the C99 + * standard (and are specified to be consistent, with fesetround() + * affecting the value of FLT_ROUNDS), but that some (Linux) systems + * do not work correctly in this regard, so using fegetround() is more + * portable than using FLT_ROUNDS directly. + * #define Check_FLT_ROUNDS if FLT_ROUNDS can assume the values 2 or 3 + * and Honor_FLT_ROUNDS is not #defined. + * #define RND_PRODQUOT to use rnd_prod and rnd_quot (assembly routines + * that use extended-precision instructions to compute rounded + * products and quotients) with IBM. + * #define ROUND_BIASED for IEEE-format with biased rounding and arithmetic + * that rounds toward +Infinity. + * #define ROUND_BIASED_without_Round_Up for IEEE-format with biased + * rounding when the underlying floating-point arithmetic uses + * unbiased rounding. This prevent using ordinary floating-point + * arithmetic when the result could be computed with one rounding error. + * #define Inaccurate_Divide for IEEE-format with correctly rounded + * products but inaccurate quotients, e.g., for Intel i860. + * #define NO_LONG_LONG on machines that do not have a "long long" + * integer type (of >= 64 bits). On such machines, you can + * #define Just_16 to store 16 bits per 32-bit Long when doing + * high-precision integer arithmetic. Whether this speeds things + * up or slows things down depends on the machine and the number + * being converted. If long long is available and the name is + * something other than "long long", #define Llong to be the name, + * and if "unsigned Llong" does not work as an unsigned version of + * Llong, #define #ULLong to be the corresponding unsigned type. + * #define Bad_float_h if your system lacks a float.h or if it does not + * define some or all of DBL_DIG, DBL_MAX_10_EXP, DBL_MAX_EXP, + * FLT_RADIX, FLT_ROUNDS, and DBL_MAX. + * #define MALLOC your_malloc, where your_malloc(n) acts like malloc(n) + * if memory is available and otherwise does something you deem + * appropriate. If MALLOC is undefined, malloc will be invoked + * directly -- and assumed always to succeed. Similarly, if you + * want something other than the system's free() to be called to + * recycle memory acquired from MALLOC, #define FREE to be the + * name of the alternate routine. (FREE or free is only called in + * pathological cases, e.g., in a dtoa call after a dtoa return in + * mode 3 with thousands of digits requested.) + * #define Omit_Private_Memory to omit logic (added Jan. 1998) for making + * memory allocations from a private pool of memory when possible. + * When used, the private pool is PRIVATE_MEM bytes long: 2304 bytes, + * unless #defined to be a different length. This default length + * suffices to get rid of MALLOC calls except for unusual cases, + * such as decimal-to-binary conversion of a very long string of + * digits. The longest string dtoa can return is about 751 bytes + * long. For conversions by strtod of strings of 800 digits and + * all dtoa conversions in single-threaded executions with 8-byte + * pointers, PRIVATE_MEM >= 7400 appears to suffice; with 4-byte + * pointers, PRIVATE_MEM >= 7112 appears adequate. + * #define NO_INFNAN_CHECK if you do not wish to have INFNAN_CHECK + * #defined automatically on IEEE systems. On such systems, + * when INFNAN_CHECK is #defined, strtod checks + * for Infinity and NaN (case insensitively). On some systems + * (e.g., some HP systems), it may be necessary to #define NAN_WORD0 + * appropriately -- to the most significant word of a quiet NaN. + * (On HP Series 700/800 machines, -DNAN_WORD0=0x7ff40000 works.) + * When INFNAN_CHECK is #defined and No_Hex_NaN is not #defined, + * strtod also accepts (case insensitively) strings of the form + * NaN(x), where x is a string of hexadecimal digits and spaces; + * if there is only one string of hexadecimal digits, it is taken + * for the 52 fraction bits of the resulting NaN; if there are two + * or more strings of hex digits, the first is for the high 20 bits, + * the second and subsequent for the low 32 bits, with intervening + * white space ignored; but if this results in none of the 52 + * fraction bits being on (an IEEE Infinity symbol), then NAN_WORD0 + * and NAN_WORD1 are used instead. + * #define MULTIPLE_THREADS if the system offers preemptively scheduled + * multiple threads. In this case, you must provide (or suitably + * #define) two locks, acquired by ACQUIRE_DTOA_LOCK(n) and freed + * by FREE_DTOA_LOCK(n) for n = 0 or 1. (The second lock, accessed + * in pow5mult, ensures lazy evaluation of only one copy of high + * powers of 5; omitting this lock would introduce a small + * probability of wasting memory, but would otherwise be harmless.) + * You must also invoke freedtoa(s) to free the value s returned by + * dtoa. You may do so whether or not MULTIPLE_THREADS is #defined. + + * When MULTIPLE_THREADS is #defined, this source file provides + * void set_max_dtoa_threads(unsigned int n); + * and expects + * unsigned int dtoa_get_threadno(void); + * to be available (possibly provided by + * #define dtoa_get_threadno omp_get_thread_num + * if OpenMP is in use or by + * #define dtoa_get_threadno pthread_self + * if Pthreads is in use), to return the current thread number. + * If set_max_dtoa_threads(n) was called and the current thread + * number is k with k < n, then calls on ACQUIRE_DTOA_LOCK(...) and + * FREE_DTOA_LOCK(...) are avoided; instead each thread with thread + * number < n has a separate copy of relevant data structures. + * After set_max_dtoa_threads(n), a call set_max_dtoa_threads(m) + * with m <= n has has no effect, but a call with m > n is honored. + * Such a call invokes REALLOC (assumed to be "realloc" if REALLOC + * is not #defined) to extend the size of the relevant array. + + * #define NO_IEEE_Scale to disable new (Feb. 1997) logic in strtod that + * avoids underflows on inputs whose result does not underflow. + * If you #define NO_IEEE_Scale on a machine that uses IEEE-format + * floating-point numbers and flushes underflows to zero rather + * than implementing gradual underflow, then you must also #define + * Sudden_Underflow. + * #define USE_LOCALE to use the current locale's decimal_point value. + * #define SET_INEXACT if IEEE arithmetic is being used and extra + * computation should be done to set the inexact flag when the + * result is inexact and avoid setting inexact when the result + * is exact. In this case, dtoa.c must be compiled in + * an environment, perhaps provided by #include "dtoa.c" in a + * suitable wrapper, that defines two functions, + * int get_inexact(void); + * void clear_inexact(void); + * such that get_inexact() returns a nonzero value if the + * inexact bit is already set, and clear_inexact() sets the + * inexact bit to 0. When SET_INEXACT is #defined, strtod + * also does extra computations to set the underflow and overflow + * flags when appropriate (i.e., when the result is tiny and + * inexact or when it is a numeric value rounded to +-infinity). + * #define NO_ERRNO if strtod should not assign errno = ERANGE when + * the result overflows to +-Infinity or underflows to 0. + * When errno should be assigned, under seemingly rare conditions + * it may be necessary to define Set_errno(x) suitably, e.g., in + * a local errno.h, such as + * #include <errno.h> + * #define Set_errno(x) _set_errno(x) + * #define NO_HEX_FP to omit recognition of hexadecimal floating-point + * values by strtod. + * #define NO_STRTOD_BIGCOMP (on IEEE-arithmetic systems only for now) + * to disable logic for "fast" testing of very long input strings + * to strtod. This testing proceeds by initially truncating the + * input string, then if necessary comparing the whole string with + * a decimal expansion to decide close cases. This logic is only + * used for input more than STRTOD_DIGLIM digits long (default 40). + */ + +#include <thread.h> +#include <threads.h> +#include <atomic.h> + +static atomic_flag dtoa_lock[2] = { ATOMIC_FLAG_INIT, ATOMIC_FLAG_INIT }; + +#define ACQUIRE_DTOA_LOCK(n) LIBC_LOCK(dtoa_lock[(n)]) +#define FREE_DTOA_LOCK(n) LIBC_UNLOCK(dtoa_lock[(n)]) + +#define dtoa_get_threadno() thrd_current()->tid + +#define IEEE_8087 +#define Honor_FLT_ROUNDS +#define MULTIPLE_THREADS + +#ifndef Long +#define Long int +#endif +#ifndef ULong +typedef unsigned Long ULong; +#endif + +#ifdef DEBUG +#include <assert.h> +#include "stdio.h" +#define Bug(x) \ + { \ + fprintf(stderr, "%s\n", x); \ + exit(1); \ + } +#define Debug(x) x +int dtoa_stats[7]; /* strtod_{64,96,bigcomp},dtoa_{exact,64,96,bigcomp} */ +#else +#define assert(x) /*nothing*/ +#define Debug(x) /*nothing*/ +#endif + +#include "stdlib.h" +#include "string.h" + +#ifdef USE_LOCALE +#include "locale.h" +#endif + +#ifdef Honor_FLT_ROUNDS +#ifndef Trust_FLT_ROUNDS +#include <fenv.h> +#endif +#endif + +#ifdef __cplusplus +extern "C" { +#endif +#ifdef MALLOC +extern void *MALLOC(size_t); +#else +#define MALLOC malloc +#endif + +#ifdef REALLOC +extern void *REALLOC(void *, size_t); +#else +#define REALLOC realloc +#endif + +#ifndef FREE +#define FREE free +#endif + +#ifdef __cplusplus +} +#endif + +#ifndef Omit_Private_Memory +#ifndef PRIVATE_MEM +#define PRIVATE_MEM 2304 +#endif +#define PRIVATE_mem ((PRIVATE_MEM + sizeof(double) - 1) / sizeof(double)) +static double private_mem[PRIVATE_mem], *pmem_next = private_mem; +#endif + +#undef IEEE_Arith +#undef Avoid_Underflow +#ifdef IEEE_MC68k +#define IEEE_Arith +#endif +#ifdef IEEE_8087 +#define IEEE_Arith +#endif + +#ifdef IEEE_Arith +#ifndef NO_INFNAN_CHECK +#undef INFNAN_CHECK +#define INFNAN_CHECK +#endif +#else +#undef INFNAN_CHECK +#define NO_STRTOD_BIGCOMP +#endif + +#include "errno.h" + +#ifdef NO_ERRNO /*{*/ +#undef Set_errno +#define Set_errno(x) +#else +#ifndef Set_errno +#define Set_errno(x) errno = x +#endif +#endif /*}*/ + +#ifdef Bad_float_h + +#ifdef IEEE_Arith +#define DBL_DIG 15 +#define DBL_MAX_10_EXP 308 +#define DBL_MAX_EXP 1024 +#define FLT_RADIX 2 +#endif /*IEEE_Arith*/ + +#ifdef IBM +#define DBL_DIG 16 +#define DBL_MAX_10_EXP 75 +#define DBL_MAX_EXP 63 +#define FLT_RADIX 16 +#define DBL_MAX 7.2370055773322621e+75 +#endif + +#ifdef VAX +#define DBL_DIG 16 +#define DBL_MAX_10_EXP 38 +#define DBL_MAX_EXP 127 +#define FLT_RADIX 2 +#define DBL_MAX 1.7014118346046923e+38 +#endif + +#ifndef LONG_MAX +#define LONG_MAX 2147483647 +#endif + +#else /* ifndef Bad_float_h */ +#include "float.h" +#endif /* Bad_float_h */ + +#ifndef __MATH_H__ +#include "math.h" +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +#if defined(IEEE_8087) + defined(IEEE_MC68k) + defined(VAX) + defined(IBM) != 1 +Exactly one of IEEE_8087, IEEE_MC68k, VAX, + or IBM should be defined. +#endif + +#undef USE_BF96 + +#ifdef NO_LONG_LONG /*{{*/ +#undef ULLong +#ifdef Just_16 +#undef Pack_32 +/* When Pack_32 is not defined, we store 16 bits per 32-bit Long. + * This makes some inner loops simpler and sometimes saves work + * during multiplications, but it often seems to make things slightly + * slower. Hence the default is now to store 32 bits per Long. + */ +#endif +#else /*}{ long long available */ +#ifndef Llong +#define Llong long long +#endif +#ifndef ULLong +#define ULLong unsigned Llong +#endif +#ifndef NO_BF96 /*{*/ +#define USE_BF96 + +#ifdef SET_INEXACT +#define dtoa_divmax 27 +#else +int dtoa_divmax = 2; /* Permit experimenting: on some systems, 64-bit integer */ +/* division is slow enough that we may sometimes want to */ +/* avoid using it. We assume (but do not check) that */ +/* dtoa_divmax <= 27.*/ +#endif + +typedef struct BF96 { /* Normalized 96-bit software floating point numbers */ + unsigned int b0, b1, b2; /* b0 = most significant, binary point just to + its left */ + int e; /* number represented = b * 2^e, with .5 <= b < 1 */ +} BF96; + +static BF96 pten[667] = { { 0xeef453d6, 0x923bd65a, 0x113faa29, -1136 }, + { 0x9558b466, 0x1b6565f8, 0x4ac7ca59, -1132 }, + { 0xbaaee17f, 0xa23ebf76, 0x5d79bcf0, -1129 }, + { 0xe95a99df, 0x8ace6f53, 0xf4d82c2c, -1126 }, + { 0x91d8a02b, 0xb6c10594, 0x79071b9b, -1122 }, + { 0xb64ec836, 0xa47146f9, 0x9748e282, -1119 }, + { 0xe3e27a44, 0x4d8d98b7, 0xfd1b1b23, -1116 }, + { 0x8e6d8c6a, 0xb0787f72, 0xfe30f0f5, -1112 }, + { 0xb208ef85, 0x5c969f4f, 0xbdbd2d33, -1109 }, + { 0xde8b2b66, 0xb3bc4723, 0xad2c7880, -1106 }, + { 0x8b16fb20, 0x3055ac76, 0x4c3bcb50, -1102 }, + { 0xaddcb9e8, 0x3c6b1793, 0xdf4abe24, -1099 }, + { 0xd953e862, 0x4b85dd78, 0xd71d6dad, -1096 }, + { 0x87d4713d, 0x6f33aa6b, 0x8672648c, -1092 }, + { 0xa9c98d8c, 0xcb009506, 0x680efdaf, -1089 }, + { 0xd43bf0ef, 0xfdc0ba48, 0x0212bd1b, -1086 }, + { 0x84a57695, 0xfe98746d, 0x014bb630, -1082 }, + { 0xa5ced43b, 0x7e3e9188, 0x419ea3bd, -1079 }, + { 0xcf42894a, 0x5dce35ea, 0x52064cac, -1076 }, + { 0x818995ce, 0x7aa0e1b2, 0x7343efeb, -1072 }, + { 0xa1ebfb42, 0x19491a1f, 0x1014ebe6, -1069 }, + { 0xca66fa12, 0x9f9b60a6, 0xd41a26e0, -1066 }, + { 0xfd00b897, 0x478238d0, 0x8920b098, -1063 }, + { 0x9e20735e, 0x8cb16382, 0x55b46e5f, -1059 }, + { 0xc5a89036, 0x2fddbc62, 0xeb2189f7, -1056 }, + { 0xf712b443, 0xbbd52b7b, 0xa5e9ec75, -1053 }, + { 0x9a6bb0aa, 0x55653b2d, 0x47b233c9, -1049 }, + { 0xc1069cd4, 0xeabe89f8, 0x999ec0bb, -1046 }, + { 0xf148440a, 0x256e2c76, 0xc00670ea, -1043 }, + { 0x96cd2a86, 0x5764dbca, 0x38040692, -1039 }, + { 0xbc807527, 0xed3e12bc, 0xc6050837, -1036 }, + { 0xeba09271, 0xe88d976b, 0xf7864a44, -1033 }, + { 0x93445b87, 0x31587ea3, 0x7ab3ee6a, -1029 }, + { 0xb8157268, 0xfdae9e4c, 0x5960ea05, -1026 }, + { 0xe61acf03, 0x3d1a45df, 0x6fb92487, -1023 }, + { 0x8fd0c162, 0x06306bab, 0xa5d3b6d4, -1019 }, + { 0xb3c4f1ba, 0x87bc8696, 0x8f48a489, -1016 }, + { 0xe0b62e29, 0x29aba83c, 0x331acdab, -1013 }, + { 0x8c71dcd9, 0xba0b4925, 0x9ff0c08b, -1009 }, + { 0xaf8e5410, 0x288e1b6f, 0x07ecf0ae, -1006 }, + { 0xdb71e914, 0x32b1a24a, 0xc9e82cd9, -1003 }, + { 0x892731ac, 0x9faf056e, 0xbe311c08, -999 }, + { 0xab70fe17, 0xc79ac6ca, 0x6dbd630a, -996 }, + { 0xd64d3d9d, 0xb981787d, 0x092cbbcc, -993 }, + { 0x85f04682, 0x93f0eb4e, 0x25bbf560, -989 }, + { 0xa76c5823, 0x38ed2621, 0xaf2af2b8, -986 }, + { 0xd1476e2c, 0x07286faa, 0x1af5af66, -983 }, + { 0x82cca4db, 0x847945ca, 0x50d98d9f, -979 }, + { 0xa37fce12, 0x6597973c, 0xe50ff107, -976 }, + { 0xcc5fc196, 0xfefd7d0c, 0x1e53ed49, -973 }, + { 0xff77b1fc, 0xbebcdc4f, 0x25e8e89c, -970 }, + { 0x9faacf3d, 0xf73609b1, 0x77b19161, -966 }, + { 0xc795830d, 0x75038c1d, 0xd59df5b9, -963 }, + { 0xf97ae3d0, 0xd2446f25, 0x4b057328, -960 }, + { 0x9becce62, 0x836ac577, 0x4ee367f9, -956 }, + { 0xc2e801fb, 0x244576d5, 0x229c41f7, -953 }, + { 0xf3a20279, 0xed56d48a, 0x6b435275, -950 }, + { 0x9845418c, 0x345644d6, 0x830a1389, -946 }, + { 0xbe5691ef, 0x416bd60c, 0x23cc986b, -943 }, + { 0xedec366b, 0x11c6cb8f, 0x2cbfbe86, -940 }, + { 0x94b3a202, 0xeb1c3f39, 0x7bf7d714, -936 }, + { 0xb9e08a83, 0xa5e34f07, 0xdaf5ccd9, -933 }, + { 0xe858ad24, 0x8f5c22c9, 0xd1b3400f, -930 }, + { 0x91376c36, 0xd99995be, 0x23100809, -926 }, + { 0xb5854744, 0x8ffffb2d, 0xabd40a0c, -923 }, + { 0xe2e69915, 0xb3fff9f9, 0x16c90c8f, -920 }, + { 0x8dd01fad, 0x907ffc3b, 0xae3da7d9, -916 }, + { 0xb1442798, 0xf49ffb4a, 0x99cd11cf, -913 }, + { 0xdd95317f, 0x31c7fa1d, 0x40405643, -910 }, + { 0x8a7d3eef, 0x7f1cfc52, 0x482835ea, -906 }, + { 0xad1c8eab, 0x5ee43b66, 0xda324365, -903 }, + { 0xd863b256, 0x369d4a40, 0x90bed43e, -900 }, + { 0x873e4f75, 0xe2224e68, 0x5a7744a6, -896 }, + { 0xa90de353, 0x5aaae202, 0x711515d0, -893 }, + { 0xd3515c28, 0x31559a83, 0x0d5a5b44, -890 }, + { 0x8412d999, 0x1ed58091, 0xe858790a, -886 }, + { 0xa5178fff, 0x668ae0b6, 0x626e974d, -883 }, + { 0xce5d73ff, 0x402d98e3, 0xfb0a3d21, -880 }, + { 0x80fa687f, 0x881c7f8e, 0x7ce66634, -876 }, + { 0xa139029f, 0x6a239f72, 0x1c1fffc1, -873 }, + { 0xc9874347, 0x44ac874e, 0xa327ffb2, -870 }, + { 0xfbe91419, 0x15d7a922, 0x4bf1ff9f, -867 }, + { 0x9d71ac8f, 0xada6c9b5, 0x6f773fc3, -863 }, + { 0xc4ce17b3, 0x99107c22, 0xcb550fb4, -860 }, + { 0xf6019da0, 0x7f549b2b, 0x7e2a53a1, -857 }, + { 0x99c10284, 0x4f94e0fb, 0x2eda7444, -853 }, + { 0xc0314325, 0x637a1939, 0xfa911155, -850 }, + { 0xf03d93ee, 0xbc589f88, 0x793555ab, -847 }, + { 0x96267c75, 0x35b763b5, 0x4bc1558b, -843 }, + { 0xbbb01b92, 0x83253ca2, 0x9eb1aaed, -840 }, + { 0xea9c2277, 0x23ee8bcb, 0x465e15a9, -837 }, + { 0x92a1958a, 0x7675175f, 0x0bfacd89, -833 }, + { 0xb749faed, 0x14125d36, 0xcef980ec, -830 }, + { 0xe51c79a8, 0x5916f484, 0x82b7e127, -827 }, + { 0x8f31cc09, 0x37ae58d2, 0xd1b2ecb8, -823 }, + { 0xb2fe3f0b, 0x8599ef07, 0x861fa7e6, -820 }, + { 0xdfbdcece, 0x67006ac9, 0x67a791e0, -817 }, + { 0x8bd6a141, 0x006042bd, 0xe0c8bb2c, -813 }, + { 0xaecc4991, 0x4078536d, 0x58fae9f7, -810 }, + { 0xda7f5bf5, 0x90966848, 0xaf39a475, -807 }, + { 0x888f9979, 0x7a5e012d, 0x6d8406c9, -803 }, + { 0xaab37fd7, 0xd8f58178, 0xc8e5087b, -800 }, + { 0xd5605fcd, 0xcf32e1d6, 0xfb1e4a9a, -797 }, + { 0x855c3be0, 0xa17fcd26, 0x5cf2eea0, -793 }, + { 0xa6b34ad8, 0xc9dfc06f, 0xf42faa48, -790 }, + { 0xd0601d8e, 0xfc57b08b, 0xf13b94da, -787 }, + { 0x823c1279, 0x5db6ce57, 0x76c53d08, -783 }, + { 0xa2cb1717, 0xb52481ed, 0x54768c4b, -780 }, + { 0xcb7ddcdd, 0xa26da268, 0xa9942f5d, -777 }, + { 0xfe5d5415, 0x0b090b02, 0xd3f93b35, -774 }, + { 0x9efa548d, 0x26e5a6e1, 0xc47bc501, -770 }, + { 0xc6b8e9b0, 0x709f109a, 0x359ab641, -767 }, + { 0xf867241c, 0x8cc6d4c0, 0xc30163d2, -764 }, + { 0x9b407691, 0xd7fc44f8, 0x79e0de63, -760 }, + { 0xc2109436, 0x4dfb5636, 0x985915fc, -757 }, + { 0xf294b943, 0xe17a2bc4, 0x3e6f5b7b, -754 }, + { 0x979cf3ca, 0x6cec5b5a, 0xa705992c, -750 }, + { 0xbd8430bd, 0x08277231, 0x50c6ff78, -747 }, + { 0xece53cec, 0x4a314ebd, 0xa4f8bf56, -744 }, + { 0x940f4613, 0xae5ed136, 0x871b7795, -740 }, + { 0xb9131798, 0x99f68584, 0x28e2557b, -737 }, + { 0xe757dd7e, 0xc07426e5, 0x331aeada, -734 }, + { 0x9096ea6f, 0x3848984f, 0x3ff0d2c8, -730 }, + { 0xb4bca50b, 0x065abe63, 0x0fed077a, -727 }, + { 0xe1ebce4d, 0xc7f16dfb, 0xd3e84959, -724 }, + { 0x8d3360f0, 0x9cf6e4bd, 0x64712dd7, -720 }, + { 0xb080392c, 0xc4349dec, 0xbd8d794d, -717 }, + { 0xdca04777, 0xf541c567, 0xecf0d7a0, -714 }, + { 0x89e42caa, 0xf9491b60, 0xf41686c4, -710 }, + { 0xac5d37d5, 0xb79b6239, 0x311c2875, -707 }, + { 0xd77485cb, 0x25823ac7, 0x7d633293, -704 }, + { 0x86a8d39e, 0xf77164bc, 0xae5dff9c, -700 }, + { 0xa8530886, 0xb54dbdeb, 0xd9f57f83, -697 }, + { 0xd267caa8, 0x62a12d66, 0xd072df63, -694 }, + { 0x8380dea9, 0x3da4bc60, 0x4247cb9e, -690 }, + { 0xa4611653, 0x8d0deb78, 0x52d9be85, -687 }, + { 0xcd795be8, 0x70516656, 0x67902e27, -684 }, + { 0x806bd971, 0x4632dff6, 0x00ba1cd8, -680 }, + { 0xa086cfcd, 0x97bf97f3, 0x80e8a40e, -677 }, + { 0xc8a883c0, 0xfdaf7df0, 0x6122cd12, -674 }, + { 0xfad2a4b1, 0x3d1b5d6c, 0x796b8057, -671 }, + { 0x9cc3a6ee, 0xc6311a63, 0xcbe33036, -667 }, + { 0xc3f490aa, 0x77bd60fc, 0xbedbfc44, -664 }, + { 0xf4f1b4d5, 0x15acb93b, 0xee92fb55, -661 }, + { 0x99171105, 0x2d8bf3c5, 0x751bdd15, -657 }, + { 0xbf5cd546, 0x78eef0b6, 0xd262d45a, -654 }, + { 0xef340a98, 0x172aace4, 0x86fb8971, -651 }, + { 0x9580869f, 0x0e7aac0e, 0xd45d35e6, -647 }, + { 0xbae0a846, 0xd2195712, 0x89748360, -644 }, + { 0xe998d258, 0x869facd7, 0x2bd1a438, -641 }, + { 0x91ff8377, 0x5423cc06, 0x7b6306a3, -637 }, + { 0xb67f6455, 0x292cbf08, 0x1a3bc84c, -634 }, + { 0xe41f3d6a, 0x7377eeca, 0x20caba5f, -631 }, + { 0x8e938662, 0x882af53e, 0x547eb47b, -627 }, + { 0xb23867fb, 0x2a35b28d, 0xe99e619a, -624 }, + { 0xdec681f9, 0xf4c31f31, 0x6405fa00, -621 }, + { 0x8b3c113c, 0x38f9f37e, 0xde83bc40, -617 }, + { 0xae0b158b, 0x4738705e, 0x9624ab50, -614 }, + { 0xd98ddaee, 0x19068c76, 0x3badd624, -611 }, + { 0x87f8a8d4, 0xcfa417c9, 0xe54ca5d7, -607 }, + { 0xa9f6d30a, 0x038d1dbc, 0x5e9fcf4c, -604 }, + { 0xd47487cc, 0x8470652b, 0x7647c320, -601 }, + { 0x84c8d4df, 0xd2c63f3b, 0x29ecd9f4, -597 }, + { 0xa5fb0a17, 0xc777cf09, 0xf4681071, -594 }, + { 0xcf79cc9d, 0xb955c2cc, 0x7182148d, -591 }, + { 0x81ac1fe2, 0x93d599bf, 0xc6f14cd8, -587 }, + { 0xa21727db, 0x38cb002f, 0xb8ada00e, -584 }, + { 0xca9cf1d2, 0x06fdc03b, 0xa6d90811, -581 }, + { 0xfd442e46, 0x88bd304a, 0x908f4a16, -578 }, + { 0x9e4a9cec, 0x15763e2e, 0x9a598e4e, -574 }, + { 0xc5dd4427, 0x1ad3cdba, 0x40eff1e1, -571 }, + { 0xf7549530, 0xe188c128, 0xd12bee59, -568 }, + { 0x9a94dd3e, 0x8cf578b9, 0x82bb74f8, -564 }, + { 0xc13a148e, 0x3032d6e7, 0xe36a5236, -561 }, + { 0xf18899b1, 0xbc3f8ca1, 0xdc44e6c3, -558 }, + { 0x96f5600f, 0x15a7b7e5, 0x29ab103a, -554 }, + { 0xbcb2b812, 0xdb11a5de, 0x7415d448, -551 }, + { 0xebdf6617, 0x91d60f56, 0x111b495b, -548 }, + { 0x936b9fce, 0xbb25c995, 0xcab10dd9, -544 }, + { 0xb84687c2, 0x69ef3bfb, 0x3d5d514f, -541 }, + { 0xe65829b3, 0x046b0afa, 0x0cb4a5a3, -538 }, + { 0x8ff71a0f, 0xe2c2e6dc, 0x47f0e785, -534 }, + { 0xb3f4e093, 0xdb73a093, 0x59ed2167, -531 }, + { 0xe0f218b8, 0xd25088b8, 0x306869c1, -528 }, + { 0x8c974f73, 0x83725573, 0x1e414218, -524 }, + { 0xafbd2350, 0x644eeacf, 0xe5d1929e, -521 }, + { 0xdbac6c24, 0x7d62a583, 0xdf45f746, -518 }, + { 0x894bc396, 0xce5da772, 0x6b8bba8c, -514 }, + { 0xab9eb47c, 0x81f5114f, 0x066ea92f, -511 }, + { 0xd686619b, 0xa27255a2, 0xc80a537b, -508 }, + { 0x8613fd01, 0x45877585, 0xbd06742c, -504 }, + { 0xa798fc41, 0x96e952e7, 0x2c481138, -501 }, + { 0xd17f3b51, 0xfca3a7a0, 0xf75a1586, -498 }, + { 0x82ef8513, 0x3de648c4, 0x9a984d73, -494 }, + { 0xa3ab6658, 0x0d5fdaf5, 0xc13e60d0, -491 }, + { 0xcc963fee, 0x10b7d1b3, 0x318df905, -488 }, + { 0xffbbcfe9, 0x94e5c61f, 0xfdf17746, -485 }, + { 0x9fd561f1, 0xfd0f9bd3, 0xfeb6ea8b, -481 }, + { 0xc7caba6e, 0x7c5382c8, 0xfe64a52e, -478 }, + { 0xf9bd690a, 0x1b68637b, 0x3dfdce7a, -475 }, + { 0x9c1661a6, 0x51213e2d, 0x06bea10c, -471 }, + { 0xc31bfa0f, 0xe5698db8, 0x486e494f, -468 }, + { 0xf3e2f893, 0xdec3f126, 0x5a89dba3, -465 }, + { 0x986ddb5c, 0x6b3a76b7, 0xf8962946, -461 }, + { 0xbe895233, 0x86091465, 0xf6bbb397, -458 }, + { 0xee2ba6c0, 0x678b597f, 0x746aa07d, -455 }, + { 0x94db4838, 0x40b717ef, 0xa8c2a44e, -451 }, + { 0xba121a46, 0x50e4ddeb, 0x92f34d62, -448 }, + { 0xe896a0d7, 0xe51e1566, 0x77b020ba, -445 }, + { 0x915e2486, 0xef32cd60, 0x0ace1474, -441 }, + { 0xb5b5ada8, 0xaaff80b8, 0x0d819992, -438 }, + { 0xe3231912, 0xd5bf60e6, 0x10e1fff6, -435 }, + { 0x8df5efab, 0xc5979c8f, 0xca8d3ffa, -431 }, + { 0xb1736b96, 0xb6fd83b3, 0xbd308ff8, -428 }, + { 0xddd0467c, 0x64bce4a0, 0xac7cb3f6, -425 }, + { 0x8aa22c0d, 0xbef60ee4, 0x6bcdf07a, -421 }, + { 0xad4ab711, 0x2eb3929d, 0x86c16c98, -418 }, + { 0xd89d64d5, 0x7a607744, 0xe871c7bf, -415 }, + { 0x87625f05, 0x6c7c4a8b, 0x11471cd7, -411 }, + { 0xa93af6c6, 0xc79b5d2d, 0xd598e40d, -408 }, + { 0xd389b478, 0x79823479, 0x4aff1d10, -405 }, + { 0x843610cb, 0x4bf160cb, 0xcedf722a, -401 }, + { 0xa54394fe, 0x1eedb8fe, 0xc2974eb4, -398 }, + { 0xce947a3d, 0xa6a9273e, 0x733d2262, -395 }, + { 0x811ccc66, 0x8829b887, 0x0806357d, -391 }, + { 0xa163ff80, 0x2a3426a8, 0xca07c2dc, -388 }, + { 0xc9bcff60, 0x34c13052, 0xfc89b393, -385 }, + { 0xfc2c3f38, 0x41f17c67, 0xbbac2078, -382 }, + { 0x9d9ba783, 0x2936edc0, 0xd54b944b, -378 }, + { 0xc5029163, 0xf384a931, 0x0a9e795e, -375 }, + { 0xf64335bc, 0xf065d37d, 0x4d4617b5, -372 }, + { 0x99ea0196, 0x163fa42e, 0x504bced1, -368 }, + { 0xc06481fb, 0x9bcf8d39, 0xe45ec286, -365 }, + { 0xf07da27a, 0x82c37088, 0x5d767327, -362 }, + { 0x964e858c, 0x91ba2655, 0x3a6a07f8, -358 }, + { 0xbbe226ef, 0xb628afea, 0x890489f7, -355 }, + { 0xeadab0ab, 0xa3b2dbe5, 0x2b45ac74, -352 }, + { 0x92c8ae6b, 0x464fc96f, 0x3b0b8bc9, -348 }, + { 0xb77ada06, 0x17e3bbcb, 0x09ce6ebb, -345 }, + { 0xe5599087, 0x9ddcaabd, 0xcc420a6a, -342 }, + { 0x8f57fa54, 0xc2a9eab6, 0x9fa94682, -338 }, + { 0xb32df8e9, 0xf3546564, 0x47939822, -335 }, + { 0xdff97724, 0x70297ebd, 0x59787e2b, -332 }, + { 0x8bfbea76, 0xc619ef36, 0x57eb4edb, -328 }, + { 0xaefae514, 0x77a06b03, 0xede62292, -325 }, + { 0xdab99e59, 0x958885c4, 0xe95fab36, -322 }, + { 0x88b402f7, 0xfd75539b, 0x11dbcb02, -318 }, + { 0xaae103b5, 0xfcd2a881, 0xd652bdc2, -315 }, + { 0xd59944a3, 0x7c0752a2, 0x4be76d33, -312 }, + { 0x857fcae6, 0x2d8493a5, 0x6f70a440, -308 }, + { 0xa6dfbd9f, 0xb8e5b88e, 0xcb4ccd50, -305 }, + { 0xd097ad07, 0xa71f26b2, 0x7e2000a4, -302 }, + { 0x825ecc24, 0xc873782f, 0x8ed40066, -298 }, + { 0xa2f67f2d, 0xfa90563b, 0x72890080, -295 }, + { 0xcbb41ef9, 0x79346bca, 0x4f2b40a0, -292 }, + { 0xfea126b7, 0xd78186bc, 0xe2f610c8, -289 }, + { 0x9f24b832, 0xe6b0f436, 0x0dd9ca7d, -285 }, + { 0xc6ede63f, 0xa05d3143, 0x91503d1c, -282 }, + { 0xf8a95fcf, 0x88747d94, 0x75a44c63, -279 }, + { 0x9b69dbe1, 0xb548ce7c, 0xc986afbe, -275 }, + { 0xc24452da, 0x229b021b, 0xfbe85bad, -272 }, + { 0xf2d56790, 0xab41c2a2, 0xfae27299, -269 }, + { 0x97c560ba, 0x6b0919a5, 0xdccd879f, -265 }, + { 0xbdb6b8e9, 0x05cb600f, 0x5400e987, -262 }, + { 0xed246723, 0x473e3813, 0x290123e9, -259 }, + { 0x9436c076, 0x0c86e30b, 0xf9a0b672, -255 }, + { 0xb9447093, 0x8fa89bce, 0xf808e40e, -252 }, + { 0xe7958cb8, 0x7392c2c2, 0xb60b1d12, -249 }, + { 0x90bd77f3, 0x483bb9b9, 0xb1c6f22b, -245 }, + { 0xb4ecd5f0, 0x1a4aa828, 0x1e38aeb6, -242 }, + { 0xe2280b6c, 0x20dd5232, 0x25c6da63, -239 }, + { 0x8d590723, 0x948a535f, 0x579c487e, -235 }, + { 0xb0af48ec, 0x79ace837, 0x2d835a9d, -232 }, + { 0xdcdb1b27, 0x98182244, 0xf8e43145, -229 }, + { 0x8a08f0f8, 0xbf0f156b, 0x1b8e9ecb, -225 }, + { 0xac8b2d36, 0xeed2dac5, 0xe272467e, -222 }, + { 0xd7adf884, 0xaa879177, 0x5b0ed81d, -219 }, + { 0x86ccbb52, 0xea94baea, 0x98e94712, -215 }, + { 0xa87fea27, 0xa539e9a5, 0x3f2398d7, -212 }, + { 0xd29fe4b1, 0x8e88640e, 0x8eec7f0d, -209 }, + { 0x83a3eeee, 0xf9153e89, 0x1953cf68, -205 }, + { 0xa48ceaaa, 0xb75a8e2b, 0x5fa8c342, -202 }, + { 0xcdb02555, 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0x7eb25866, 505 }, + { 0x98bf2f79, 0xd5993802, 0xef2f773f, 509 }, + { 0xbeeefb58, 0x4aff8603, 0xaafb550f, 512 }, + { 0xeeaaba2e, 0x5dbf6784, 0x95ba2a53, 515 }, + { 0x952ab45c, 0xfa97a0b2, 0xdd945a74, 519 }, + { 0xba756174, 0x393d88df, 0x94f97111, 522 }, + { 0xe912b9d1, 0x478ceb17, 0x7a37cd56, 525 }, + { 0x91abb422, 0xccb812ee, 0xac62e055, 529 }, + { 0xb616a12b, 0x7fe617aa, 0x577b986b, 532 }, + { 0xe39c4976, 0x5fdf9d94, 0xed5a7e85, 535 }, + { 0x8e41ade9, 0xfbebc27d, 0x14588f13, 539 }, + { 0xb1d21964, 0x7ae6b31c, 0x596eb2d8, 542 }, + { 0xde469fbd, 0x99a05fe3, 0x6fca5f8e, 545 }, + { 0x8aec23d6, 0x80043bee, 0x25de7bb9, 549 }, + { 0xada72ccc, 0x20054ae9, 0xaf561aa7, 552 }, + { 0xd910f7ff, 0x28069da4, 0x1b2ba151, 555 }, + { 0x87aa9aff, 0x79042286, 0x90fb44d2, 559 }, + { 0xa99541bf, 0x57452b28, 0x353a1607, 562 }, + { 0xd3fa922f, 0x2d1675f2, 0x42889b89, 565 }, + { 0x847c9b5d, 0x7c2e09b7, 0x69956135, 569 }, + { 0xa59bc234, 0xdb398c25, 0x43fab983, 572 }, + { 0xcf02b2c2, 0x1207ef2e, 0x94f967e4, 575 }, + { 0x8161afb9, 0x4b44f57d, 0x1d1be0ee, 579 }, + { 0xa1ba1ba7, 0x9e1632dc, 0x6462d92a, 582 }, + { 0xca28a291, 0x859bbf93, 0x7d7b8f75, 585 }, + { 0xfcb2cb35, 0xe702af78, 0x5cda7352, 588 }, + { 0x9defbf01, 0xb061adab, 0x3a088813, 592 }, + { 0xc56baec2, 0x1c7a1916, 0x088aaa18, 595 }, + { 0xf6c69a72, 0xa3989f5b, 0x8aad549e, 598 }, + { 0x9a3c2087, 0xa63f6399, 0x36ac54e2, 602 }, + { 0xc0cb28a9, 0x8fcf3c7f, 0x84576a1b, 605 }, + { 0xf0fdf2d3, 0xf3c30b9f, 0x656d44a2, 608 }, + { 0x969eb7c4, 0x7859e743, 0x9f644ae5, 612 }, + { 0xbc4665b5, 0x96706114, 0x873d5d9f, 615 }, + { 0xeb57ff22, 0xfc0c7959, 0xa90cb506, 618 }, + { 0x9316ff75, 0xdd87cbd8, 0x09a7f124, 622 }, + { 0xb7dcbf53, 0x54e9bece, 0x0c11ed6d, 625 }, + { 0xe5d3ef28, 0x2a242e81, 0x8f1668c8, 628 }, + { 0x8fa47579, 0x1a569d10, 0xf96e017d, 632 }, + { 0xb38d92d7, 0x60ec4455, 0x37c981dc, 635 }, + { 0xe070f78d, 0x3927556a, 0x85bbe253, 638 }, + { 0x8c469ab8, 0x43b89562, 0x93956d74, 642 }, + { 0xaf584166, 0x54a6babb, 0x387ac8d1, 645 }, + { 0xdb2e51bf, 0xe9d0696a, 0x06997b05, 648 }, + { 0x88fcf317, 0xf22241e2, 0x441fece3, 652 }, + { 0xab3c2fdd, 0xeeaad25a, 0xd527e81c, 655 }, + { 0xd60b3bd5, 0x6a5586f1, 0x8a71e223, 658 }, + { 0x85c70565, 0x62757456, 0xf6872d56, 662 }, + { 0xa738c6be, 0xbb12d16c, 0xb428f8ac, 665 }, + { 0xd106f86e, 0x69d785c7, 0xe13336d7, 668 }, + { 0x82a45b45, 0x0226b39c, 0xecc00246, 672 }, + { 0xa34d7216, 0x42b06084, 0x27f002d7, 675 }, + { 0xcc20ce9b, 0xd35c78a5, 0x31ec038d, 678 }, + { 0xff290242, 0xc83396ce, 0x7e670471, 681 }, + { 0x9f79a169, 0xbd203e41, 0x0f0062c6, 685 }, + { 0xc75809c4, 0x2c684dd1, 0x52c07b78, 688 }, + { 0xf92e0c35, 0x37826145, 0xa7709a56, 691 }, + { 0x9bbcc7a1, 0x42b17ccb, 0x88a66076, 695 }, + { 0xc2abf989, 0x935ddbfe, 0x6acff893, 698 }, + { 0xf356f7eb, 0xf83552fe, 0x0583f6b8, 701 }, + { 0x98165af3, 0x7b2153de, 0xc3727a33, 705 }, + { 0xbe1bf1b0, 0x59e9a8d6, 0x744f18c0, 708 }, + { 0xeda2ee1c, 0x7064130c, 0x1162def0, 711 }, + { 0x9485d4d1, 0xc63e8be7, 0x8addcb56, 715 }, + { 0xb9a74a06, 0x37ce2ee1, 0x6d953e2b, 718 }, + { 0xe8111c87, 0xc5c1ba99, 0xc8fa8db6, 721 }, + { 0x910ab1d4, 0xdb9914a0, 0x1d9c9892, 725 }, + { 0xb54d5e4a, 0x127f59c8, 0x2503beb6, 728 }, + { 0xe2a0b5dc, 0x971f303a, 0x2e44ae64, 731 }, + { 0x8da471a9, 0xde737e24, 0x5ceaecfe, 735 }, + { 0xb10d8e14, 0x56105dad, 0x7425a83e, 738 }, + { 0xdd50f199, 0x6b947518, 0xd12f124e, 741 }, + { 0x8a5296ff, 0xe33cc92f, 0x82bd6b70, 745 }, + { 0xace73cbf, 0xdc0bfb7b, 0x636cc64d, 748 }, + { 0xd8210bef, 0xd30efa5a, 0x3c47f7e0, 751 }, + { 0x8714a775, 0xe3e95c78, 0x65acfaec, 755 }, + { 0xa8d9d153, 0x5ce3b396, 0x7f1839a7, 758 }, + { 0xd31045a8, 0x341ca07c, 0x1ede4811, 761 }, + { 0x83ea2b89, 0x2091e44d, 0x934aed0a, 765 }, + { 0xa4e4b66b, 0x68b65d60, 0xf81da84d, 768 }, + { 0xce1de406, 0x42e3f4b9, 0x36251260, 771 }, + { 0x80d2ae83, 0xe9ce78f3, 0xc1d72b7c, 775 }, + { 0xa1075a24, 0xe4421730, 0xb24cf65b, 778 }, + { 0xc94930ae, 0x1d529cfc, 0xdee033f2, 781 }, + { 0xfb9b7cd9, 0xa4a7443c, 0x169840ef, 784 }, + { 0x9d412e08, 0x06e88aa5, 0x8e1f2895, 788 }, + { 0xc491798a, 0x08a2ad4e, 0xf1a6f2ba, 791 }, + { 0xf5b5d7ec, 0x8acb58a2, 0xae10af69, 794 }, + { 0x9991a6f3, 0xd6bf1765, 0xacca6da1, 798 }, + { 0xbff610b0, 0xcc6edd3f, 0x17fd090a, 801 }, + { 0xeff394dc, 0xff8a948e, 0xddfc4b4c, 804 }, + { 0x95f83d0a, 0x1fb69cd9, 0x4abdaf10, 808 }, + { 0xbb764c4c, 0xa7a4440f, 0x9d6d1ad4, 811 }, + { 0xea53df5f, 0xd18d5513, 0x84c86189, 814 }, + { 0x92746b9b, 0xe2f8552c, 0x32fd3cf5, 818 }, + { 0xb7118682, 0xdbb66a77, 0x3fbc8c33, 821 }, + { 0xe4d5e823, 0x92a40515, 0x0fabaf3f, 824 }, + { 0x8f05b116, 0x3ba6832d, 0x29cb4d87, 828 }, + { 0xb2c71d5b, 0xca9023f8, 0x743e20e9, 831 }, + { 0xdf78e4b2, 0xbd342cf6, 0x914da924, 834 }, + { 0x8bab8eef, 0xb6409c1a, 0x1ad089b6, 838 }, + { 0xae9672ab, 0xa3d0c320, 0xa184ac24, 841 }, + { 0xda3c0f56, 0x8cc4f3e8, 0xc9e5d72d, 844 }, + { 0x88658996, 0x17fb1871, 0x7e2fa67c, 848 }, + { 0xaa7eebfb, 0x9df9de8d, 0xddbb901b, 851 }, + { 0xd51ea6fa, 0x85785631, 0x552a7422, 854 }, + { 0x8533285c, 0x936b35de, 0xd53a8895, 858 }, + { 0xa67ff273, 0xb8460356, 0x8a892aba, 861 }, + { 0xd01fef10, 0xa657842c, 0x2d2b7569, 864 }, + { 0x8213f56a, 0x67f6b29b, 0x9c3b2962, 868 }, + { 0xa298f2c5, 0x01f45f42, 0x8349f3ba, 871 }, + { 0xcb3f2f76, 0x42717713, 0x241c70a9, 874 }, + { 0xfe0efb53, 0xd30dd4d7, 0xed238cd3, 877 }, + { 0x9ec95d14, 0x63e8a506, 0xf4363804, 881 }, + { 0xc67bb459, 0x7ce2ce48, 0xb143c605, 884 }, + { 0xf81aa16f, 0xdc1b81da, 0xdd94b786, 887 }, + { 0x9b10a4e5, 0xe9913128, 0xca7cf2b4, 891 }, + { 0xc1d4ce1f, 0x63f57d72, 0xfd1c2f61, 894 }, + { 0xf24a01a7, 0x3cf2dccf, 0xbc633b39, 897 }, + { 0x976e4108, 0x8617ca01, 0xd5be0503, 901 }, + { 0xbd49d14a, 0xa79dbc82, 0x4b2d8644, 904 }, + { 0xec9c459d, 0x51852ba2, 0xddf8e7d6, 907 }, + { 0x93e1ab82, 0x52f33b45, 0xcabb90e5, 911 }, + { 0xb8da1662, 0xe7b00a17, 0x3d6a751f, 914 }, + { 0xe7109bfb, 0xa19c0c9d, 0x0cc51267, 917 }, + { 0x906a617d, 0x450187e2, 0x27fb2b80, 921 }, + { 0xb484f9dc, 0x9641e9da, 0xb1f9f660, 924 }, + { 0xe1a63853, 0xbbd26451, 0x5e7873f8, 927 }, + { 0x8d07e334, 0x55637eb2, 0xdb0b487b, 931 }, + { 0xb049dc01, 0x6abc5e5f, 0x91ce1a9a, 934 }, + { 0xdc5c5301, 0xc56b75f7, 0x7641a140, 937 }, + { 0x89b9b3e1, 0x1b6329ba, 0xa9e904c8, 941 }, + { 0xac2820d9, 0x623bf429, 0x546345fa, 944 }, + { 0xd732290f, 0xbacaf133, 0xa97c1779, 947 }, + { 0x867f59a9, 0xd4bed6c0, 0x49ed8eab, 951 }, + { 0xa81f3014, 0x49ee8c70, 0x5c68f256, 954 }, + { 0xd226fc19, 0x5c6a2f8c, 0x73832eec, 957 }, + { 0x83585d8f, 0xd9c25db7, 0xc831fd53, 961 }, + { 0xa42e74f3, 0xd032f525, 0xba3e7ca8, 964 }, + { 0xcd3a1230, 0xc43fb26f, 0x28ce1bd2, 967 }, + { 0x80444b5e, 0x7aa7cf85, 0x7980d163, 971 }, + { 0xa0555e36, 0x1951c366, 0xd7e105bc, 974 }, + { 0xc86ab5c3, 0x9fa63440, 0x8dd9472b, 977 }, + { 0xfa856334, 0x878fc150, 0xb14f98f6, 980 }, + { 0x9c935e00, 0xd4b9d8d2, 0x6ed1bf9a, 984 }, + { 0xc3b83581, 0x09e84f07, 0x0a862f80, 987 }, + { 0xf4a642e1, 0x4c6262c8, 0xcd27bb61, 990 }, + { 0x98e7e9cc, 0xcfbd7dbd, 0x8038d51c, 994 }, + { 0xbf21e440, 0x03acdd2c, 0xe0470a63, 997 }, + { 0xeeea5d50, 0x04981478, 0x1858ccfc, 1000 }, + { 0x95527a52, 0x02df0ccb, 0x0f37801e, 1004 }, + { 0xbaa718e6, 0x8396cffd, 0xd3056025, 1007 }, + { 0xe950df20, 0x247c83fd, 0x47c6b82e, 1010 }, + { 0x91d28b74, 0x16cdd27e, 0x4cdc331d, 1014 }, + { 0xb6472e51, 0x1c81471d, 0xe0133fe4, 1017 }, + { 0xe3d8f9e5, 0x63a198e5, 0x58180fdd, 1020 }, + { 0x8e679c2f, 0x5e44ff8f, 0x570f09ea, 1024 }, + { 0xb201833b, 0x35d63f73, 0x2cd2cc65, 1027 }, + { 0xde81e40a, 0x034bcf4f, 0xf8077f7e, 1030 }, + { 0x8b112e86, 0x420f6191, 0xfb04afaf, 1034 }, + { 0xadd57a27, 0xd29339f6, 0x79c5db9a, 1037 }, + { 0xd94ad8b1, 0xc7380874, 0x18375281, 1040 }, + { 0x87cec76f, 0x1c830548, 0x8f229391, 1044 }, + { 0xa9c2794a, 0xe3a3c69a, 0xb2eb3875, 1047 }, + { 0xd433179d, 0x9c8cb841, 0x5fa60692, 1050 }, + { 0x849feec2, 0x81d7f328, 0xdbc7c41b, 1054 }, + { 0xa5c7ea73, 0x224deff3, 0x12b9b522, 1057 }, + { 0xcf39e50f, 0xeae16bef, 0xd768226b, 1060 }, + { 0x81842f29, 0xf2cce375, 0xe6a11583, 1064 }, + { 0xa1e53af4, 0x6f801c53, 0x60495ae3, 1067 }, + { 0xca5e89b1, 0x8b602368, 0x385bb19c, 1070 }, + { 0xfcf62c1d, 0xee382c42, 0x46729e03, 1073 }, + { 0x9e19db92, 0xb4e31ba9, 0x6c07a2c2, 1077 } }; +static short int Lhint[2098] = { + /*18,*/ 19, 19, 19, 19, 20, 20, 20, 21, 21, 21, 22, + 22, 22, 23, 23, 23, 23, 24, 24, 24, 25, 25, + 25, 26, 26, 26, 26, 27, 27, 27, 28, 28, 28, + 29, 29, 29, 29, 30, 30, 30, 31, 31, 31, 32, + 32, 32, 32, 33, 33, 33, 34, 34, 34, 35, 35, + 35, 35, 36, 36, 36, 37, 37, 37, 38, 38, 38, + 38, 39, 39, 39, 40, 40, 40, 41, 41, 41, 41, + 42, 42, 42, 43, 43, 43, 44, 44, 44, 44, 45, + 45, 45, 46, 46, 46, 47, 47, 47, 47, 48, 48, + 48, 49, 49, 49, 50, 50, 50, 51, 51, 51, 51, + 52, 52, 52, 53, 53, 53, 54, 54, 54, 54, 55, + 55, 55, 56, 56, 56, 57, 57, 57, 57, 58, 58, + 58, 59, 59, 59, 60, 60, 60, 60, 61, 61, 61, + 62, 62, 62, 63, 63, 63, 63, 64, 64, 64, 65, + 65, 65, 66, 66, 66, 66, 67, 67, 67, 68, 68, + 68, 69, 69, 69, 69, 70, 70, 70, 71, 71, 71, + 72, 72, 72, 72, 73, 73, 73, 74, 74, 74, 75, + 75, 75, 75, 76, 76, 76, 77, 77, 77, 78, 78, + 78, 78, 79, 79, 79, 80, 80, 80, 81, 81, 81, + 82, 82, 82, 82, 83, 83, 83, 84, 84, 84, 85, + 85, 85, 85, 86, 86, 86, 87, 87, 87, 88, 88, + 88, 88, 89, 89, 89, 90, 90, 90, 91, 91, 91, + 91, 92, 92, 92, 93, 93, 93, 94, 94, 94, 94, + 95, 95, 95, 96, 96, 96, 97, 97, 97, 97, 98, + 98, 98, 99, 99, 99, 100, 100, 100, 100, 101, 101, + 101, 102, 102, 102, 103, 103, 103, 103, 104, 104, 104, + 105, 105, 105, 106, 106, 106, 106, 107, 107, 107, 108, + 108, 108, 109, 109, 109, 110, 110, 110, 110, 111, 111, + 111, 112, 112, 112, 113, 113, 113, 113, 114, 114, 114, + 115, 115, 115, 116, 116, 116, 116, 117, 117, 117, 118, + 118, 118, 119, 119, 119, 119, 120, 120, 120, 121, 121, + 121, 122, 122, 122, 122, 123, 123, 123, 124, 124, 124, + 125, 125, 125, 125, 126, 126, 126, 127, 127, 127, 128, + 128, 128, 128, 129, 129, 129, 130, 130, 130, 131, 131, + 131, 131, 132, 132, 132, 133, 133, 133, 134, 134, 134, + 134, 135, 135, 135, 136, 136, 136, 137, 137, 137, 137, + 138, 138, 138, 139, 139, 139, 140, 140, 140, 141, 141, + 141, 141, 142, 142, 142, 143, 143, 143, 144, 144, 144, + 144, 145, 145, 145, 146, 146, 146, 147, 147, 147, 147, + 148, 148, 148, 149, 149, 149, 150, 150, 150, 150, 151, + 151, 151, 152, 152, 152, 153, 153, 153, 153, 154, 154, + 154, 155, 155, 155, 156, 156, 156, 156, 157, 157, 157, + 158, 158, 158, 159, 159, 159, 159, 160, 160, 160, 161, + 161, 161, 162, 162, 162, 162, 163, 163, 163, 164, 164, + 164, 165, 165, 165, 165, 166, 166, 166, 167, 167, 167, + 168, 168, 168, 169, 169, 169, 169, 170, 170, 170, 171, + 171, 171, 172, 172, 172, 172, 173, 173, 173, 174, 174, + 174, 175, 175, 175, 175, 176, 176, 176, 177, 177, 177, + 178, 178, 178, 178, 179, 179, 179, 180, 180, 180, 181, + 181, 181, 181, 182, 182, 182, 183, 183, 183, 184, 184, + 184, 184, 185, 185, 185, 186, 186, 186, 187, 187, 187, + 187, 188, 188, 188, 189, 189, 189, 190, 190, 190, 190, + 191, 191, 191, 192, 192, 192, 193, 193, 193, 193, 194, + 194, 194, 195, 195, 195, 196, 196, 196, 197, 197, 197, + 197, 198, 198, 198, 199, 199, 199, 200, 200, 200, 200, + 201, 201, 201, 202, 202, 202, 203, 203, 203, 203, 204, + 204, 204, 205, 205, 205, 206, 206, 206, 206, 207, 207, + 207, 208, 208, 208, 209, 209, 209, 209, 210, 210, 210, + 211, 211, 211, 212, 212, 212, 212, 213, 213, 213, 214, + 214, 214, 215, 215, 215, 215, 216, 216, 216, 217, 217, + 217, 218, 218, 218, 218, 219, 219, 219, 220, 220, 220, + 221, 221, 221, 221, 222, 222, 222, 223, 223, 223, 224, + 224, 224, 224, 225, 225, 225, 226, 226, 226, 227, 227, + 227, 228, 228, 228, 228, 229, 229, 229, 230, 230, 230, + 231, 231, 231, 231, 232, 232, 232, 233, 233, 233, 234, + 234, 234, 234, 235, 235, 235, 236, 236, 236, 237, 237, + 237, 237, 238, 238, 238, 239, 239, 239, 240, 240, 240, + 240, 241, 241, 241, 242, 242, 242, 243, 243, 243, 243, + 244, 244, 244, 245, 245, 245, 246, 246, 246, 246, 247, + 247, 247, 248, 248, 248, 249, 249, 249, 249, 250, 250, + 250, 251, 251, 251, 252, 252, 252, 252, 253, 253, 253, + 254, 254, 254, 255, 255, 255, 256, 256, 256, 256, 257, + 257, 257, 258, 258, 258, 259, 259, 259, 259, 260, 260, + 260, 261, 261, 261, 262, 262, 262, 262, 263, 263, 263, + 264, 264, 264, 265, 265, 265, 265, 266, 266, 266, 267, + 267, 267, 268, 268, 268, 268, 269, 269, 269, 270, 270, + 270, 271, 271, 271, 271, 272, 272, 272, 273, 273, 273, + 274, 274, 274, 274, 275, 275, 275, 276, 276, 276, 277, + 277, 277, 277, 278, 278, 278, 279, 279, 279, 280, 280, + 280, 280, 281, 281, 281, 282, 282, 282, 283, 283, 283, + 283, 284, 284, 284, 285, 285, 285, 286, 286, 286, 287, + 287, 287, 287, 288, 288, 288, 289, 289, 289, 290, 290, + 290, 290, 291, 291, 291, 292, 292, 292, 293, 293, 293, + 293, 294, 294, 294, 295, 295, 295, 296, 296, 296, 296, + 297, 297, 297, 298, 298, 298, 299, 299, 299, 299, 300, + 300, 300, 301, 301, 301, 302, 302, 302, 302, 303, 303, + 303, 304, 304, 304, 305, 305, 305, 305, 306, 306, 306, + 307, 307, 307, 308, 308, 308, 308, 309, 309, 309, 310, + 310, 310, 311, 311, 311, 311, 312, 312, 312, 313, 313, + 313, 314, 314, 314, 315, 315, 315, 315, 316, 316, 316, + 317, 317, 317, 318, 318, 318, 318, 319, 319, 319, 320, + 320, 320, 321, 321, 321, 321, 322, 322, 322, 323, 323, + 323, 324, 324, 324, 324, 325, 325, 325, 326, 326, 326, + 327, 327, 327, 327, 328, 328, 328, 329, 329, 329, 330, + 330, 330, 330, 331, 331, 331, 332, 332, 332, 333, 333, + 333, 333, 334, 334, 334, 335, 335, 335, 336, 336, 336, + 336, 337, 337, 337, 338, 338, 338, 339, 339, 339, 339, + 340, 340, 340, 341, 341, 341, 342, 342, 342, 342, 343, + 343, 343, 344, 344, 344, 345, 345, 345, 346, 346, 346, + 346, 347, 347, 347, 348, 348, 348, 349, 349, 349, 349, + 350, 350, 350, 351, 351, 351, 352, 352, 352, 352, 353, + 353, 353, 354, 354, 354, 355, 355, 355, 355, 356, 356, + 356, 357, 357, 357, 358, 358, 358, 358, 359, 359, 359, + 360, 360, 360, 361, 361, 361, 361, 362, 362, 362, 363, + 363, 363, 364, 364, 364, 364, 365, 365, 365, 366, 366, + 366, 367, 367, 367, 367, 368, 368, 368, 369, 369, 369, + 370, 370, 370, 370, 371, 371, 371, 372, 372, 372, 373, + 373, 373, 374, 374, 374, 374, 375, 375, 375, 376, 376, + 376, 377, 377, 377, 377, 378, 378, 378, 379, 379, 379, + 380, 380, 380, 380, 381, 381, 381, 382, 382, 382, 383, + 383, 383, 383, 384, 384, 384, 385, 385, 385, 386, 386, + 386, 386, 387, 387, 387, 388, 388, 388, 389, 389, 389, + 389, 390, 390, 390, 391, 391, 391, 392, 392, 392, 392, + 393, 393, 393, 394, 394, 394, 395, 395, 395, 395, 396, + 396, 396, 397, 397, 397, 398, 398, 398, 398, 399, 399, + 399, 400, 400, 400, 401, 401, 401, 402, 402, 402, 402, + 403, 403, 403, 404, 404, 404, 405, 405, 405, 405, 406, + 406, 406, 407, 407, 407, 408, 408, 408, 408, 409, 409, + 409, 410, 410, 410, 411, 411, 411, 411, 412, 412, 412, + 413, 413, 413, 414, 414, 414, 414, 415, 415, 415, 416, + 416, 416, 417, 417, 417, 417, 418, 418, 418, 419, 419, + 419, 420, 420, 420, 420, 421, 421, 421, 422, 422, 422, + 423, 423, 423, 423, 424, 424, 424, 425, 425, 425, 426, + 426, 426, 426, 427, 427, 427, 428, 428, 428, 429, 429, + 429, 429, 430, 430, 430, 431, 431, 431, 432, 432, 432, + 433, 433, 433, 433, 434, 434, 434, 435, 435, 435, 436, + 436, 436, 436, 437, 437, 437, 438, 438, 438, 439, 439, + 439, 439, 440, 440, 440, 441, 441, 441, 442, 442, 442, + 442, 443, 443, 443, 444, 444, 444, 445, 445, 445, 445, + 446, 446, 446, 447, 447, 447, 448, 448, 448, 448, 449, + 449, 449, 450, 450, 450, 451, 451, 451, 451, 452, 452, + 452, 453, 453, 453, 454, 454, 454, 454, 455, 455, 455, + 456, 456, 456, 457, 457, 457, 457, 458, 458, 458, 459, + 459, 459, 460, 460, 460, 461, 461, 461, 461, 462, 462, + 462, 463, 463, 463, 464, 464, 464, 464, 465, 465, 465, + 466, 466, 466, 467, 467, 467, 467, 468, 468, 468, 469, + 469, 469, 470, 470, 470, 470, 471, 471, 471, 472, 472, + 472, 473, 473, 473, 473, 474, 474, 474, 475, 475, 475, + 476, 476, 476, 476, 477, 477, 477, 478, 478, 478, 479, + 479, 479, 479, 480, 480, 480, 481, 481, 481, 482, 482, + 482, 482, 483, 483, 483, 484, 484, 484, 485, 485, 485, + 485, 486, 486, 486, 487, 487, 487, 488, 488, 488, 488, + 489, 489, 489, 490, 490, 490, 491, 491, 491, 492, 492, + 492, 492, 493, 493, 493, 494, 494, 494, 495, 495, 495, + 495, 496, 496, 496, 497, 497, 497, 498, 498, 498, 498, + 499, 499, 499, 500, 500, 500, 501, 501, 501, 501, 502, + 502, 502, 503, 503, 503, 504, 504, 504, 504, 505, 505, + 505, 506, 506, 506, 507, 507, 507, 507, 508, 508, 508, + 509, 509, 509, 510, 510, 510, 510, 511, 511, 511, 512, + 512, 512, 513, 513, 513, 513, 514, 514, 514, 515, 515, + 515, 516, 516, 516, 516, 517, 517, 517, 518, 518, 518, + 519, 519, 519, 520, 520, 520, 520, 521, 521, 521, 522, + 522, 522, 523, 523, 523, 523, 524, 524, 524, 525, 525, + 525, 526, 526, 526, 526, 527, 527, 527, 528, 528, 528, + 529, 529, 529, 529, 530, 530, 530, 531, 531, 531, 532, + 532, 532, 532, 533, 533, 533, 534, 534, 534, 535, 535, + 535, 535, 536, 536, 536, 537, 537, 537, 538, 538, 538, + 538, 539, 539, 539, 540, 540, 540, 541, 541, 541, 541, + 542, 542, 542, 543, 543, 543, 544, 544, 544, 544, 545, + 545, 545, 546, 546, 546, 547, 547, 547, 548, 548, 548, + 548, 549, 549, 549, 550, 550, 550, 551, 551, 551, 551, + 552, 552, 552, 553, 553, 553, 554, 554, 554, 554, 555, + 555, 555, 556, 556, 556, 557, 557, 557, 557, 558, 558, + 558, 559, 559, 559, 560, 560, 560, 560, 561, 561, 561, + 562, 562, 562, 563, 563, 563, 563, 564, 564, 564, 565, + 565, 565, 566, 566, 566, 566, 567, 567, 567, 568, 568, + 568, 569, 569, 569, 569, 570, 570, 570, 571, 571, 571, + 572, 572, 572, 572, 573, 573, 573, 574, 574, 574, 575, + 575, 575, 575, 576, 576, 576, 577, 577, 577, 578, 578, + 578, 579, 579, 579, 579, 580, 580, 580, 581, 581, 581, + 582, 582, 582, 582, 583, 583, 583, 584, 584, 584, 585, + 585, 585, 585, 586, 586, 586, 587, 587, 587, 588, 588, + 588, 588, 589, 589, 589, 590, 590, 590, 591, 591, 591, + 591, 592, 592, 592, 593, 593, 593, 594, 594, 594, 594, + 595, 595, 595, 596, 596, 596, 597, 597, 597, 597, 598, + 598, 598, 599, 599, 599, 600, 600, 600, 600, 601, 601, + 601, 602, 602, 602, 603, 603, 603, 603, 604, 604, 604, + 605, 605, 605, 606, 606, 606, 607, 607, 607, 607, 608, + 608, 608, 609, 609, 609, 610, 610, 610, 610, 611, 611, + 611, 612, 612, 612, 613, 613, 613, 613, 614, 614, 614, + 615, 615, 615, 616, 616, 616, 616, 617, 617, 617, 618, + 618, 618, 619, 619, 619, 619, 620, 620, 620, 621, 621, + 621, 622, 622, 622, 622, 623, 623, 623, 624, 624, 624, + 625, 625, 625, 625, 626, 626, 626, 627, 627, 627, 628, + 628, 628, 628, 629, 629, 629, 630, 630, 630, 631, 631, + 631, 631, 632, 632, 632, 633, 633, 633, 634, 634, 634, + 634, 635, 635, 635, 636, 636, 636, 637, 637, 637, 638, + 638, 638, 638, 639, 639, 639, 640, 640, 640, 641, 641, + 641, 641, 642, 642, 642, 643, 643, 643, 644, 644, 644, + 644, 645, 645, 645, 646, 646, 646, 647, 647, 647, 647, + 648, 648, 648, 649, 649, 649, 650, 650 +}; +static ULLong pfive[27] = { 5ll, + 25ll, + 125ll, + 625ll, + 3125ll, + 15625ll, + 78125ll, + 390625ll, + 1953125ll, + 9765625ll, + 48828125ll, + 244140625ll, + 1220703125ll, + 6103515625ll, + 30517578125ll, + 152587890625ll, + 762939453125ll, + 3814697265625ll, + 19073486328125ll, + 95367431640625ll, + 476837158203125ll, + 2384185791015625ll, + 11920928955078125ll, + 59604644775390625ll, + 298023223876953125ll, + 1490116119384765625ll, + 7450580596923828125ll }; + +static int pfivebits[25] = { 3, 5, 7, 10, 12, 14, 17, 19, 21, 24, 26, 28, 31, + 33, 35, 38, 40, 42, 45, 47, 49, 52, 54, 56, 59 }; +#endif /*}*/ +#endif /*}} NO_LONG_LONG */ + + typedef union { + double d; + ULong L[2]; +#ifdef USE_BF96 + ULLong LL; +#endif +} U; + +#ifdef IEEE_8087 +#define word0(x) (x)->L[1] +#define word1(x) (x)->L[0] +#else +#define word0(x) (x)->L[0] +#define word1(x) (x)->L[1] +#endif +#define dval(x) (x)->d +#define LLval(x) (x)->LL + +#ifndef STRTOD_DIGLIM +#define STRTOD_DIGLIM 40 +#endif + +#ifdef DIGLIM_DEBUG +extern int strtod_diglim; +#else +#define strtod_diglim STRTOD_DIGLIM +#endif + +/* The following definition of Storeinc is appropriate for MIPS processors. + * An alternative that might be better on some machines is + * #define Storeinc(a,b,c) (*a++ = b << 16 | c & 0xffff) + */ +#if defined(IEEE_8087) + defined(VAX) +#define Storeinc(a, b, c) \ + (((unsigned short *)a)[1] = (unsigned short)b, \ + ((unsigned short *)a)[0] = (unsigned short)c, a++) +#else +#define Storeinc(a, b, c) \ + (((unsigned short *)a)[0] = (unsigned short)b, \ + ((unsigned short *)a)[1] = (unsigned short)c, a++) +#endif + +/* #define P DBL_MANT_DIG */ +/* Ten_pmax = floor(P*log(2)/log(5)) */ +/* Bletch = (highest power of 2 < DBL_MAX_10_EXP) / 16 */ +/* Quick_max = floor((P-1)*log(FLT_RADIX)/log(10) - 1) */ +/* Int_max = floor(P*log(FLT_RADIX)/log(10) - 1) */ + +#ifdef IEEE_Arith +#define Exp_shift 20 +#define Exp_shift1 20 +#define Exp_msk1 0x100000 +#define Exp_msk11 0x100000 +#define Exp_mask 0x7ff00000 +#define P 53 +#define Nbits 53 +#define Bias 1023 +#define Emax 1023 +#define Emin (-1022) +#define Exp_1 0x3ff00000 +#define Exp_11 0x3ff00000 +#define Ebits 11 +#define Frac_mask 0xfffff +#define Frac_mask1 0xfffff +#define Ten_pmax 22 +#define Bletch 0x10 +#define Bndry_mask 0xfffff +#define Bndry_mask1 0xfffff +#define LSB 1 +#define Sign_bit 0x80000000 +#define Log2P 1 +#define Tiny0 0 +#define Tiny1 1 +#define Quick_max 14 +#define Int_max 14 +#ifndef NO_IEEE_Scale +#define Avoid_Underflow +#ifdef Flush_Denorm /* debugging option */ +#undef Sudden_Underflow +#endif +#endif + +#ifndef Flt_Rounds +#ifdef FLT_ROUNDS +#define Flt_Rounds FLT_ROUNDS +#else +#define Flt_Rounds 1 +#endif +#endif /*Flt_Rounds*/ + +#ifdef Honor_FLT_ROUNDS +#undef Check_FLT_ROUNDS +#define Check_FLT_ROUNDS +#else +#define Rounding Flt_Rounds +#endif + +#else /* ifndef IEEE_Arith */ +#undef Check_FLT_ROUNDS +#undef Honor_FLT_ROUNDS +#undef SET_INEXACT +#undef Sudden_Underflow +#define Sudden_Underflow +#ifdef IBM +#undef Flt_Rounds +#define Flt_Rounds 0 +#define Exp_shift 24 +#define Exp_shift1 24 +#define Exp_msk1 0x1000000 +#define Exp_msk11 0x1000000 +#define Exp_mask 0x7f000000 +#define P 14 +#define Nbits 56 +#define Bias 65 +#define Emax 248 +#define Emin (-260) +#define Exp_1 0x41000000 +#define Exp_11 0x41000000 +#define Ebits 8 /* exponent has 7 bits, but 8 is the right value in b2d */ +#define Frac_mask 0xffffff +#define Frac_mask1 0xffffff +#define Bletch 4 +#define Ten_pmax 22 +#define Bndry_mask 0xefffff +#define Bndry_mask1 0xffffff +#define LSB 1 +#define Sign_bit 0x80000000 +#define Log2P 4 +#define Tiny0 0x100000 +#define Tiny1 0 +#define Quick_max 14 +#define Int_max 15 +#else /* VAX */ +#undef Flt_Rounds +#define Flt_Rounds 1 +#define Exp_shift 23 +#define Exp_shift1 7 +#define Exp_msk1 0x80 +#define Exp_msk11 0x800000 +#define Exp_mask 0x7f80 +#define P 56 +#define Nbits 56 +#define Bias 129 +#define Emax 126 +#define Emin (-129) +#define Exp_1 0x40800000 +#define Exp_11 0x4080 +#define Ebits 8 +#define Frac_mask 0x7fffff +#define Frac_mask1 0xffff007f +#define Ten_pmax 24 +#define Bletch 2 +#define Bndry_mask 0xffff007f +#define Bndry_mask1 0xffff007f +#define LSB 0x10000 +#define Sign_bit 0x8000 +#define Log2P 1 +#define Tiny0 0x80 +#define Tiny1 0 +#define Quick_max 15 +#define Int_max 15 +#endif /* IBM, VAX */ +#endif /* IEEE_Arith */ + +#ifndef IEEE_Arith +#define ROUND_BIASED +#else +#ifdef ROUND_BIASED_without_Round_Up +#undef ROUND_BIASED +#define ROUND_BIASED +#endif +#endif + +#ifdef RND_PRODQUOT +#define rounded_product(a, b) a = rnd_prod(a, b) +#define rounded_quotient(a, b) a = rnd_quot(a, b) +extern double rnd_prod(double, double), rnd_quot(double, double); +#else +#define rounded_product(a, b) a *= b +#define rounded_quotient(a, b) a /= b +#endif + +#define Big0 (Frac_mask1 | Exp_msk1 * (DBL_MAX_EXP + Bias - 1)) +#define Big1 0xffffffff + +#ifndef Pack_32 +#define Pack_32 +#endif + +typedef struct BCinfo BCinfo; +struct BCinfo { + int dp0, dp1, dplen, dsign, e0, inexact, nd, nd0, rounding, scale, + uflchk; +}; + +#define FFFFFFFF 0xffffffffUL + +#ifdef MULTIPLE_THREADS +#define MTa , PTI +#define MTb , &TI +#define MTd , ThInfo **PTI +static unsigned int maxthreads = 0; +#else +#define MTa /*nothing*/ +#define MTb /*nothing*/ +#define MTd /*nothing*/ +#endif + +#define Kmax 7 + +#ifdef __cplusplus +extern "C" double strtod(const char *s00, char **se); +extern "C" char *dtoa(double d, int mode, int ndigits, int *decpt, int *sign, + char **rve); +#endif + +struct Bigint { + struct Bigint *next; + int k, maxwds, sign, wds; + ULong x[1]; +}; + +typedef struct Bigint Bigint; +typedef struct ThInfo { + Bigint *Freelist[Kmax + 1]; + Bigint *P5s; +} ThInfo; + +static ThInfo TI0; + +#ifdef MULTIPLE_THREADS +static ThInfo *TI1; +static int TI0_used; + +void set_max_dtoa_threads(unsigned int n) +{ + size_t L; + + if (n > maxthreads) { + L = n * sizeof(ThInfo); + if (TI1) { + TI1 = (ThInfo *)REALLOC(TI1, L); + memset(TI1 + maxthreads, 0, + (n - maxthreads) * sizeof(ThInfo)); + } else { + TI1 = (ThInfo *)MALLOC(L); + if (TI0_used) { + memcpy(TI1, &TI0, sizeof(ThInfo)); + if (n > 1) + memset(TI1 + 1, 0, L - sizeof(ThInfo)); + memset(&TI0, 0, sizeof(ThInfo)); + } else + memset(TI1, 0, L); + } + maxthreads = n; + } +} + +static ThInfo *get_TI(void) +{ + unsigned int thno = dtoa_get_threadno(); + if (thno < maxthreads) + return TI1 + thno; + if (thno == 0) + TI0_used = 1; + return &TI0; +} +#define freelist TI->Freelist +#define p5s TI->P5s +#else +#define freelist TI0.Freelist +#define p5s TI0.P5s +#endif + +static Bigint *Balloc(int k MTd) +{ + int x; + Bigint *rv; +#ifndef Omit_Private_Memory + unsigned int len; +#endif +#ifdef MULTIPLE_THREADS + ThInfo *TI; + + if (!(TI = *PTI)) + *PTI = TI = get_TI(); + if (TI == &TI0) + ACQUIRE_DTOA_LOCK(0); +#endif + /* The k > Kmax case does not need ACQUIRE_DTOA_LOCK(0), */ + /* but this case seems very unlikely. */ + if (k <= Kmax && (rv = freelist[k])) + freelist[k] = rv->next; + else { + x = 1 << k; +#ifdef Omit_Private_Memory + rv = (Bigint *)MALLOC(sizeof(Bigint) + (x - 1) * sizeof(ULong)); +#else + len = (sizeof(Bigint) + (x - 1) * sizeof(ULong) + + sizeof(double) - 1) / + sizeof(double); + if (k <= Kmax && pmem_next - private_mem + len <= PRIVATE_mem +#ifdef MULTIPLE_THREADS + && TI == TI1 +#endif + ) { + rv = (Bigint *)pmem_next; + pmem_next += len; + } else + rv = (Bigint *)MALLOC(len * sizeof(double)); +#endif + rv->k = k; + rv->maxwds = x; + } +#ifdef MULTIPLE_THREADS + if (TI == &TI0) + FREE_DTOA_LOCK(0); +#endif + rv->sign = rv->wds = 0; + return rv; +} + +static void Bfree(Bigint *v MTd) +{ +#ifdef MULTIPLE_THREADS + ThInfo *TI; +#endif + if (v) { + if (v->k > Kmax) + FREE((void *)v); + else { +#ifdef MULTIPLE_THREADS + if (!(TI = *PTI)) + *PTI = TI = get_TI(); + if (TI == &TI0) + ACQUIRE_DTOA_LOCK(0); +#endif + v->next = freelist[v->k]; + freelist[v->k] = v; +#ifdef MULTIPLE_THREADS + if (TI == &TI0) + FREE_DTOA_LOCK(0); +#endif + } + } +} + +#define Bcopy(x, y) \ + memcpy((char *)&x->sign, (char *)&y->sign, \ + y->wds * sizeof(Long) + 2 * sizeof(int)) + +static Bigint *multadd(Bigint *b, int m, int a MTd) /* multiply by m and add a + */ +{ + int i, wds; +#ifdef ULLong + ULong *x; + ULLong carry, y; +#else + ULong carry, *x, y; +#ifdef Pack_32 + ULong xi, z; +#endif +#endif + Bigint *b1; + + wds = b->wds; + x = b->x; + i = 0; + carry = a; + do { +#ifdef ULLong + y = *x * (ULLong)m + carry; + carry = y >> 32; + *x++ = y & FFFFFFFF; +#else +#ifdef Pack_32 + xi = *x; + y = (xi & 0xffff) * m + carry; + z = (xi >> 16) * m + (y >> 16); + carry = z >> 16; + *x++ = (z << 16) + (y & 0xffff); +#else + y = *x * m + carry; + carry = y >> 16; + *x++ = y & 0xffff; +#endif +#endif + } while (++i < wds); + if (carry) { + if (wds >= b->maxwds) { + b1 = Balloc(b->k + 1 MTa); + Bcopy(b1, b); + Bfree(b MTa); + b = b1; + } + b->x[wds++] = carry; + b->wds = wds; + } + return b; +} + +static Bigint *s2b(const char *s, int nd0, int nd, ULong y9, int dplen MTd) +{ + Bigint *b; + int i, k; + Long x, y; + + x = (nd + 8) / 9; + for (k = 0, y = 1; x > y; y <<= 1, k++) + ; +#ifdef Pack_32 + b = Balloc(k MTa); + b->x[0] = y9; + b->wds = 1; +#else + b = Balloc(k + 1 MTa); + b->x[0] = y9 & 0xffff; + b->wds = (b->x[1] = y9 >> 16) ? 2 : 1; +#endif + + i = 9; + if (9 < nd0) { + s += 9; + do + b = multadd(b, 10, *s++ - '0' MTa); + while (++i < nd0); + s += dplen; + } else + s += dplen + 9; + for (; i < nd; i++) + b = multadd(b, 10, *s++ - '0' MTa); + return b; +} + +static int hi0bits(ULong x) +{ + int k = 0; + + if (!(x & 0xffff0000)) { + k = 16; + x <<= 16; + } + if (!(x & 0xff000000)) { + k += 8; + x <<= 8; + } + if (!(x & 0xf0000000)) { + k += 4; + x <<= 4; + } + if (!(x & 0xc0000000)) { + k += 2; + x <<= 2; + } + if (!(x & 0x80000000)) { + k++; + if (!(x & 0x40000000)) + return 32; + } + return k; +} + +static int lo0bits(ULong *y) +{ + int k; + ULong x = *y; + + if (x & 7) { + if (x & 1) + return 0; + if (x & 2) { + *y = x >> 1; + return 1; + } + *y = x >> 2; + return 2; + } + k = 0; + if (!(x & 0xffff)) { + k = 16; + x >>= 16; + } + if (!(x & 0xff)) { + k += 8; + x >>= 8; + } + if (!(x & 0xf)) { + k += 4; + x >>= 4; + } + if (!(x & 0x3)) { + k += 2; + x >>= 2; + } + if (!(x & 1)) { + k++; + x >>= 1; + if (!x) + return 32; + } + *y = x; + return k; +} + +static Bigint *i2b(int i MTd) +{ + Bigint *b; + + b = Balloc(1 MTa); + b->x[0] = i; + b->wds = 1; + return b; +} + +static Bigint *mult(Bigint *a, Bigint *b MTd) +{ + Bigint *c; + int k, wa, wb, wc; + ULong *x, *xa, *xae, *xb, *xbe, *xc, *xc0; + ULong y; +#ifdef ULLong + ULLong carry, z; +#else + ULong carry, z; +#ifdef Pack_32 + ULong z2; +#endif +#endif + + if (a->wds < b->wds) { + c = a; + a = b; + b = c; + } + k = a->k; + wa = a->wds; + wb = b->wds; + wc = wa + wb; + if (wc > a->maxwds) + k++; + c = Balloc(k MTa); + for (x = c->x, xa = x + wc; x < xa; x++) + *x = 0; + xa = a->x; + xae = xa + wa; + xb = b->x; + xbe = xb + wb; + xc0 = c->x; +#ifdef ULLong + for (; xb < xbe; xc0++) { + if ((y = *xb++)) { + x = xa; + xc = xc0; + carry = 0; + do { + z = *x++ * (ULLong)y + *xc + carry; + carry = z >> 32; + *xc++ = z & FFFFFFFF; + } while (x < xae); + *xc = carry; + } + } +#else +#ifdef Pack_32 + for (; xb < xbe; xb++, xc0++) { + if ((y = *xb & 0xffff)) { + x = xa; + xc = xc0; + carry = 0; + do { + z = (*x & 0xffff) * y + (*xc & 0xffff) + carry; + carry = z >> 16; + z2 = (*x++ >> 16) * y + (*xc >> 16) + carry; + carry = z2 >> 16; + Storeinc(xc, z2, z); + } while (x < xae); + *xc = carry; + } + if ((y = *xb >> 16)) { + x = xa; + xc = xc0; + carry = 0; + z2 = *xc; + do { + z = (*x & 0xffff) * y + (*xc >> 16) + carry; + carry = z >> 16; + Storeinc(xc, z, z2); + z2 = (*x++ >> 16) * y + (*xc & 0xffff) + carry; + carry = z2 >> 16; + } while (x < xae); + *xc = z2; + } + } +#else + for (; xb < xbe; xc0++) { + if (y = *xb++) { + x = xa; + xc = xc0; + carry = 0; + do { + z = *x++ * y + *xc + carry; + carry = z >> 16; + *xc++ = z & 0xffff; + } while (x < xae); + *xc = carry; + } + } +#endif +#endif + for (xc0 = c->x, xc = xc0 + wc; wc > 0 && !*--xc; --wc) + ; + c->wds = wc; + return c; +} + +static Bigint *pow5mult(Bigint *b, int k MTd) +{ + Bigint *b1, *p5, *p51; +#ifdef MULTIPLE_THREADS + ThInfo *TI; +#endif + int i; + static int p05[3] = { 5, 25, 125 }; + + if ((i = k & 3)) + b = multadd(b, p05[i - 1], 0 MTa); + + if (!(k >>= 2)) + return b; +#ifdef MULTIPLE_THREADS + if (!(TI = *PTI)) + *PTI = TI = get_TI(); +#endif + if (!(p5 = p5s)) { + /* first time */ +#ifdef MULTIPLE_THREADS + if (!(TI = *PTI)) + *PTI = TI = get_TI(); + if (TI == &TI0) + ACQUIRE_DTOA_LOCK(1); + if (!(p5 = p5s)) { + p5 = p5s = i2b(625 MTa); + p5->next = 0; + } + if (TI == &TI0) + FREE_DTOA_LOCK(1); +#else + p5 = p5s = i2b(625 MTa); + p5->next = 0; +#endif + } + for (;;) { + if (k & 1) { + b1 = mult(b, p5 MTa); + Bfree(b MTa); + b = b1; + } + if (!(k >>= 1)) + break; + if (!(p51 = p5->next)) { +#ifdef MULTIPLE_THREADS + if (!TI && !(TI = *PTI)) + *PTI = TI = get_TI(); + if (TI == &TI0) + ACQUIRE_DTOA_LOCK(1); + if (!(p51 = p5->next)) { + p51 = p5->next = mult(p5, p5 MTa); + p51->next = 0; + } + if (TI == &TI0) + FREE_DTOA_LOCK(1); +#else + p51 = p5->next = mult(p5, p5); + p51->next = 0; +#endif + } + p5 = p51; + } + return b; +} + +static Bigint *lshift(Bigint *b, int k MTd) +{ + int i, k1, n, n1; + Bigint *b1; + ULong *x, *x1, *xe, z; + +#ifdef Pack_32 + n = k >> 5; +#else + n = k >> 4; +#endif + k1 = b->k; + n1 = n + b->wds + 1; + for (i = b->maxwds; n1 > i; i <<= 1) + k1++; + b1 = Balloc(k1 MTa); + x1 = b1->x; + for (i = 0; i < n; i++) + *x1++ = 0; + x = b->x; + xe = x + b->wds; +#ifdef Pack_32 + if (k &= 0x1f) { + k1 = 32 - k; + z = 0; + do { + *x1++ = *x << k | z; + z = *x++ >> k1; + } while (x < xe); + if ((*x1 = z)) + ++n1; + } +#else + if (k &= 0xf) { + k1 = 16 - k; + z = 0; + do { + *x1++ = *x << k & 0xffff | z; + z = *x++ >> k1; + } while (x < xe); + if (*x1 = z) + ++n1; + } +#endif + else + do + *x1++ = *x++; + while (x < xe); + b1->wds = n1 - 1; + Bfree(b MTa); + return b1; +} + +static int cmp(Bigint *a, Bigint *b) +{ + ULong *xa, *xa0, *xb, *xb0; + int i, j; + + i = a->wds; + j = b->wds; +#ifdef DEBUG + if (i > 1 && !a->x[i - 1]) + Bug("cmp called with a->x[a->wds-1] == 0"); + if (j > 1 && !b->x[j - 1]) + Bug("cmp called with b->x[b->wds-1] == 0"); +#endif + if (i -= j) + return i; + xa0 = a->x; + xa = xa0 + j; + xb0 = b->x; + xb = xb0 + j; + for (;;) { + if (*--xa != *--xb) + return *xa < *xb ? -1 : 1; + if (xa <= xa0) + break; + } + return 0; +} + +static Bigint *diff(Bigint *a, Bigint *b MTd) +{ + Bigint *c; + int i, wa, wb; + ULong *xa, *xae, *xb, *xbe, *xc; +#ifdef ULLong + ULLong borrow, y; +#else + ULong borrow, y; +#ifdef Pack_32 + ULong z; +#endif +#endif + + i = cmp(a, b); + if (!i) { + c = Balloc(0 MTa); + c->wds = 1; + c->x[0] = 0; + return c; + } + if (i < 0) { + c = a; + a = b; + b = c; + i = 1; + } else + i = 0; + c = Balloc(a->k MTa); + c->sign = i; + wa = a->wds; + xa = a->x; + xae = xa + wa; + wb = b->wds; + xb = b->x; + xbe = xb + wb; + xc = c->x; + borrow = 0; +#ifdef ULLong + do { + y = (ULLong)*xa++ - *xb++ - borrow; + borrow = y >> 32 & (ULong)1; + *xc++ = y & FFFFFFFF; + } while (xb < xbe); + while (xa < xae) { + y = *xa++ - borrow; + borrow = y >> 32 & (ULong)1; + *xc++ = y & FFFFFFFF; + } +#else +#ifdef Pack_32 + do { + y = (*xa & 0xffff) - (*xb & 0xffff) - borrow; + borrow = (y & 0x10000) >> 16; + z = (*xa++ >> 16) - (*xb++ >> 16) - borrow; + borrow = (z & 0x10000) >> 16; + Storeinc(xc, z, y); + } while (xb < xbe); + while (xa < xae) { + y = (*xa & 0xffff) - borrow; + borrow = (y & 0x10000) >> 16; + z = (*xa++ >> 16) - borrow; + borrow = (z & 0x10000) >> 16; + Storeinc(xc, z, y); + } +#else + do { + y = *xa++ - *xb++ - borrow; + borrow = (y & 0x10000) >> 16; + *xc++ = y & 0xffff; + } while (xb < xbe); + while (xa < xae) { + y = *xa++ - borrow; + borrow = (y & 0x10000) >> 16; + *xc++ = y & 0xffff; + } +#endif +#endif + while (!*--xc) + wa--; + c->wds = wa; + return c; +} + +static double ulp(U *x) +{ + Long L; + U u; + + L = (word0(x) & Exp_mask) - (P - 1) * Exp_msk1; +#ifndef Avoid_Underflow +#ifndef Sudden_Underflow + if (L > 0) { +#endif +#endif +#ifdef IBM + L |= Exp_msk1 >> 4; +#endif + word0(&u) = L; + word1(&u) = 0; +#ifndef Avoid_Underflow +#ifndef Sudden_Underflow + } else { + L = -L >> Exp_shift; + if (L < Exp_shift) { + word0(&u) = 0x80000 >> L; + word1(&u) = 0; + } else { + word0(&u) = 0; + L -= Exp_shift; + word1(&u) = L >= 31 ? 1 : 1 << 31 - L; + } + } +#endif +#endif + return dval(&u); +} + +static double b2d(Bigint *a, int *e) +{ + ULong *xa, *xa0, w, y, z; + int k; + U d; +#ifdef VAX + ULong d0, d1; +#else +#define d0 word0(&d) +#define d1 word1(&d) +#endif + + xa0 = a->x; + xa = xa0 + a->wds; + y = *--xa; +#ifdef DEBUG + if (!y) + Bug("zero y in b2d"); +#endif + k = hi0bits(y); + *e = 32 - k; +#ifdef Pack_32 + if (k < Ebits) { + d0 = Exp_1 | y >> (Ebits - k); + w = xa > xa0 ? *--xa : 0; + d1 = y << ((32 - Ebits) + k) | w >> (Ebits - k); + goto ret_d; + } + z = xa > xa0 ? *--xa : 0; + if (k -= Ebits) { + d0 = Exp_1 | y << k | z >> (32 - k); + y = xa > xa0 ? *--xa : 0; + d1 = z << k | y >> (32 - k); + } else { + d0 = Exp_1 | y; + d1 = z; + } +#else + if (k < Ebits + 16) { + z = xa > xa0 ? *--xa : 0; + d0 = Exp_1 | y << k - Ebits | z >> Ebits + 16 - k; + w = xa > xa0 ? *--xa : 0; + y = xa > xa0 ? *--xa : 0; + d1 = z << k + 16 - Ebits | w << k - Ebits | y >> 16 + Ebits - k; + goto ret_d; + } + z = xa > xa0 ? *--xa : 0; + w = xa > xa0 ? *--xa : 0; + k -= Ebits + 16; + d0 = Exp_1 | y << k + 16 | z << k | w >> 16 - k; + y = xa > xa0 ? *--xa : 0; + d1 = w << k + 16 | y << k; +#endif +ret_d: +#ifdef VAX + word0(&d) = d0 >> 16 | d0 << 16; + word1(&d) = d1 >> 16 | d1 << 16; +#else +#undef d0 +#undef d1 +#endif + return dval(&d); +} + +static Bigint *d2b(U *d, int *e, int *bits MTd) +{ + Bigint *b; + int de, k; + ULong *x, y, z; +#ifndef Sudden_Underflow + int i; +#endif +#ifdef VAX + ULong d0, d1; + d0 = word0(d) >> 16 | word0(d) << 16; + d1 = word1(d) >> 16 | word1(d) << 16; +#else +#define d0 word0(d) +#define d1 word1(d) +#endif + +#ifdef Pack_32 + b = Balloc(1 MTa); +#else + b = Balloc(2 MTa); +#endif + x = b->x; + + z = d0 & Frac_mask; + d0 &= 0x7fffffff; /* clear sign bit, which we ignore */ +#ifdef Sudden_Underflow + de = (int)(d0 >> Exp_shift); +#ifndef IBM + z |= Exp_msk11; +#endif +#else + if ((de = (int)(d0 >> Exp_shift))) + z |= Exp_msk1; +#endif +#ifdef Pack_32 + if ((y = d1)) { + if ((k = lo0bits(&y))) { + x[0] = y | z << (32 - k); + z >>= k; + } else + x[0] = y; +#ifndef Sudden_Underflow + i = +#endif + b->wds = (x[1] = z) ? 2 : 1; + } else { + k = lo0bits(&z); + x[0] = z; +#ifndef Sudden_Underflow + i = +#endif + b->wds = 1; + k += 32; + } +#else + if (y = d1) { + if (k = lo0bits(&y)) + if (k >= 16) { + x[0] = y | z << 32 - k & 0xffff; + x[1] = z >> k - 16 & 0xffff; + x[2] = z >> k; + i = 2; + } else { + x[0] = y & 0xffff; + x[1] = y >> 16 | z << 16 - k & 0xffff; + x[2] = z >> k & 0xffff; + x[3] = z >> k + 16; + i = 3; + } + else { + x[0] = y & 0xffff; + x[1] = y >> 16; + x[2] = z & 0xffff; + x[3] = z >> 16; + i = 3; + } + } else { +#ifdef DEBUG + if (!z) + Bug("Zero passed to d2b"); +#endif + k = lo0bits(&z); + if (k >= 16) { + x[0] = z; + i = 0; + } else { + x[0] = z & 0xffff; + x[1] = z >> 16; + i = 1; + } + k += 32; + } + while (!x[i]) + --i; + b->wds = i + 1; +#endif +#ifndef Sudden_Underflow + if (de) { +#endif +#ifdef IBM + *e = (de - Bias - (P - 1) << 2) + k; + *bits = 4 * P + 8 - k - hi0bits(word0(d) & Frac_mask); +#else + *e = de - Bias - (P - 1) + k; + *bits = P - k; +#endif +#ifndef Sudden_Underflow + } else { + *e = de - Bias - (P - 1) + 1 + k; +#ifdef Pack_32 + *bits = 32 * i - hi0bits(x[i - 1]); +#else + *bits = (i + 2) * 16 - hi0bits(x[i]); +#endif + } +#endif + return b; +} +#undef d0 +#undef d1 + +static double ratio(Bigint *a, Bigint *b) +{ + U da, db; + int k, ka, kb; + + dval(&da) = b2d(a, &ka); + dval(&db) = b2d(b, &kb); +#ifdef Pack_32 + k = ka - kb + 32 * (a->wds - b->wds); +#else + k = ka - kb + 16 * (a->wds - b->wds); +#endif +#ifdef IBM + if (k > 0) { + word0(&da) += (k >> 2) * Exp_msk1; + if (k &= 3) + dval(&da) *= 1 << k; + } else { + k = -k; + word0(&db) += (k >> 2) * Exp_msk1; + if (k &= 3) + dval(&db) *= 1 << k; + } +#else + if (k > 0) + word0(&da) += k * Exp_msk1; + else { + k = -k; + word0(&db) += k * Exp_msk1; + } +#endif + return dval(&da) / dval(&db); +} + +static const double tens[] = { 1e0, + 1e1, + 1e2, + 1e3, + 1e4, + 1e5, + 1e6, + 1e7, + 1e8, + 1e9, + 1e10, + 1e11, + 1e12, + 1e13, + 1e14, + 1e15, + 1e16, + 1e17, + 1e18, + 1e19, + 1e20, + 1e21, + 1e22 +#ifdef VAX + , + 1e23, + 1e24 +#endif +}; + +static const double +#ifdef IEEE_Arith + bigtens[] = { 1e16, 1e32, 1e64, 1e128, 1e256 }; +static const double tinytens[] = { 1e-16, 1e-32, 1e-64, 1e-128, +#ifdef Avoid_Underflow + 9007199254740992. * 9007199254740992.e-256 +/* = 2^106 * 1e-256 */ +#else + 1e-256 +#endif +}; +/* The factor of 2^53 in tinytens[4] helps us avoid setting the underflow */ +/* flag unnecessarily. It leads to a song and dance at the end of strtod. */ +#define Scale_Bit 0x10 +#define n_bigtens 5 +#else +#ifdef IBM + bigtens[] = { 1e16, 1e32, 1e64 }; +static const double tinytens[] = { 1e-16, 1e-32, 1e-64 }; +#define n_bigtens 3 +#else + bigtens[] = { 1e16, 1e32 }; +static const double tinytens[] = { 1e-16, 1e-32 }; +#define n_bigtens 2 +#endif +#endif + +#undef Need_Hexdig +#ifdef INFNAN_CHECK +#ifndef No_Hex_NaN +#define Need_Hexdig +#endif +#endif + +#ifndef Need_Hexdig +#ifndef NO_HEX_FP +#define Need_Hexdig +#endif +#endif + +#ifdef Need_Hexdig /*{*/ +#if 0 +static unsigned char hexdig[256]; + + static void +htinit(unsigned char *h, unsigned char *s, int inc) +{ + int i, j; + for(i = 0; (j = s[i]) !=0; i++) + h[j] = i + inc; + } + + static void +hexdig_init(void) /* Use of hexdig_init omitted 20121220 to avoid a */ + /* race condition when multiple threads are used. */ +{ +#define USC (unsigned char *) + htinit(hexdig, USC "0123456789", 0x10); + htinit(hexdig, USC "abcdef", 0x10 + 10); + htinit(hexdig, USC "ABCDEF", 0x10 + 10); + } +#else +static unsigned char hexdig[256] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 17, 18, 19, 20, 21, + 22, 23, 24, 25, 0, 0, 0, 0, 0, 0, 0, 26, 27, 28, 29, 30, 31, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 26, 27, 28, 29, 30, 31, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0 +}; +#endif +#endif /* } Need_Hexdig */ + +#ifdef INFNAN_CHECK + +#ifndef NAN_WORD0 +#define NAN_WORD0 0x7ff80000 +#endif + +#ifndef NAN_WORD1 +#define NAN_WORD1 0 +#endif + +static int match(const char **sp, const char *t) +{ + int c, d; + const char *s = *sp; + + while ((d = *t++)) { + if ((c = *++s) >= 'A' && c <= 'Z') + c += 'a' - 'A'; + if (c != d) + return 0; + } + *sp = s + 1; + return 1; +} + +#ifndef No_Hex_NaN +static void hexnan(U *rvp, const char **sp) +{ + ULong c, x[2]; + const char *s; + int c1, havedig, udx0, xshift; + + /**** if (!hexdig['0']) hexdig_init(); ****/ + x[0] = x[1] = 0; + havedig = xshift = 0; + udx0 = 1; + s = *sp; + /* allow optional initial 0x or 0X */ + while ((c = *(const unsigned char *)(s + 1)) && c <= ' ') + ++s; + if (s[1] == '0' && (s[2] == 'x' || s[2] == 'X')) + s += 2; + while ((c = *(const unsigned char *)++s)) { + if ((c1 = hexdig[c])) + c = c1 & 0xf; + else if (c <= ' ') { + if (udx0 && havedig) { + udx0 = 0; + xshift = 1; + } + continue; + } +#ifdef GDTOA_NON_PEDANTIC_NANCHECK + else if (/*(*/ c == ')' && havedig) { + *sp = s + 1; + break; + } else + return; /* invalid form: don't change *sp */ +#else + else { + do { + if (/*(*/ c == ')') { + *sp = s + 1; + break; + } + } while ((c = *++s)); + break; + } +#endif + havedig = 1; + if (xshift) { + xshift = 0; + x[0] = x[1]; + x[1] = 0; + } + if (udx0) + x[0] = (x[0] << 4) | (x[1] >> 28); + x[1] = (x[1] << 4) | c; + } + if ((x[0] &= 0xfffff) || x[1]) { + word0(rvp) = Exp_mask | x[0]; + word1(rvp) = x[1]; + } +} +#endif /*No_Hex_NaN*/ +#endif /* INFNAN_CHECK */ + +#ifdef Pack_32 +#define ULbits 32 +#define kshift 5 +#define kmask 31 +#else +#define ULbits 16 +#define kshift 4 +#define kmask 15 +#endif + +#if !defined(NO_HEX_FP) || defined(Honor_FLT_ROUNDS) /*{*/ +static Bigint *increment(Bigint *b MTd) +{ + ULong *x, *xe; + Bigint *b1; + + x = b->x; + xe = x + b->wds; + do { + if (*x < (ULong)0xffffffffL) { + ++*x; + return b; + } + *x++ = 0; + } while (x < xe); + { + if (b->wds >= b->maxwds) { + b1 = Balloc(b->k + 1 MTa); + Bcopy(b1, b); + Bfree(b MTa); + b = b1; + } + b->x[b->wds++] = 1; + } + return b; +} + +#endif /*}*/ + +#ifndef NO_HEX_FP /*{*/ + +static void rshift(Bigint *b, int k) +{ + ULong *x, *x1, *xe, y; + int n; + + x = x1 = b->x; + n = k >> kshift; + if (n < b->wds) { + xe = x + b->wds; + x += n; + if (k &= kmask) { + n = 32 - k; + y = *x++ >> k; + while (x < xe) { + *x1++ = (y | (*x << n)) & 0xffffffff; + y = *x++ >> k; + } + if ((*x1 = y) != 0) + x1++; + } else + while (x < xe) + *x1++ = *x++; + } + if ((b->wds = x1 - b->x) == 0) + b->x[0] = 0; +} + +static ULong any_on(Bigint *b, int k) +{ + int n, nwds; + ULong *x, *x0, x1, x2; + + x = b->x; + nwds = b->wds; + n = k >> kshift; + if (n > nwds) + n = nwds; + else if (n < nwds && (k &= kmask)) { + x1 = x2 = x[n]; + x1 >>= k; + x1 <<= k; + if (x1 != x2) + return 1; + } + x0 = x; + x += n; + while (x > x0) + if (*--x) + return 1; + return 0; +} + +enum { /* rounding values: same as FLT_ROUNDS */ + Round_zero = 0, + Round_near = 1, + Round_up = 2, + Round_down = 3 +}; + +void gethex(const char **sp, U *rvp, int rounding, int sign MTd) +{ + Bigint *b; + char d; + const unsigned char *decpt, *s0, *s, *s1; + Long e, e1; + ULong L, lostbits, *x; + int big, denorm, esign, havedig, k, n, nb, nbits, nz, up, zret; +#ifdef IBM + int j; +#endif + enum { +#ifdef IEEE_Arith /*{{*/ + emax = 0x7fe - Bias - P + 1, + emin = Emin - P + 1 +#else /*}{*/ + emin = Emin - P, +#ifdef VAX + emax = 0x7ff - Bias - P + + 1 +#endif +#ifdef IBM + emax = 0x7f - Bias - P +#endif +#endif /*}}*/ + }; +#ifdef IEEE_Arith + int check_denorm = 0; +#endif +#ifdef USE_LOCALE + int i; +#ifdef NO_LOCALE_CACHE + const unsigned char *decimalpoint = + (unsigned char *)localeconv()->decimal_point; +#else + const unsigned char *decimalpoint; + static unsigned char *decimalpoint_cache; + if (!(s0 = decimalpoint_cache)) { + s0 = (unsigned char *)localeconv()->decimal_point; + if ((decimalpoint_cache = (unsigned char *)MALLOC( + strlen((const char *)s0) + 1))) { + strcpy((char *)decimalpoint_cache, (const char *)s0); + s0 = decimalpoint_cache; + } + } + decimalpoint = s0; +#endif +#endif + + /**** if (!hexdig['0']) hexdig_init(); ****/ + havedig = 0; + s0 = *(const unsigned char **)sp + 2; + while (s0[havedig] == '0') + havedig++; + s0 += havedig; + s = s0; + decpt = 0; + zret = 0; + e = 0; + if (hexdig[*s]) + havedig++; + else { + zret = 1; +#ifdef USE_LOCALE + for (i = 0; decimalpoint[i]; ++i) { + if (s[i] != decimalpoint[i]) + goto pcheck; + } + decpt = s += i; +#else + if (*s != '.') + goto pcheck; + decpt = ++s; +#endif + if (!hexdig[*s]) + goto pcheck; + while (*s == '0') + s++; + if (hexdig[*s]) + zret = 0; + havedig = 1; + s0 = s; + } + while (hexdig[*s]) + s++; +#ifdef USE_LOCALE + if (*s == *decimalpoint && !decpt) { + for (i = 1; decimalpoint[i]; ++i) { + if (s[i] != decimalpoint[i]) + goto pcheck; + } + decpt = s += i; +#else + if (*s == '.' && !decpt) { + decpt = ++s; +#endif + while (hexdig[*s]) + s++; + } /*}*/ + if (decpt) + e = -(((Long)(s - decpt)) << 2); +pcheck: + s1 = s; + big = esign = 0; + switch (*s) { + case 'p': + case 'P': + switch (*++s) { + case '-': + esign = 1; + /* no break */ + case '+': + s++; + } + if ((n = hexdig[*s]) == 0 || n > 0x19) { + s = s1; + break; + } + e1 = n - 0x10; + while ((n = hexdig[*++s]) != 0 && n <= 0x19) { + if (e1 & 0xf8000000) + big = 1; + e1 = 10 * e1 + n - 0x10; + } + if (esign) + e1 = -e1; + e += e1; + } + *sp = (char *)s; + if (!havedig) + *sp = (char *)s0 - 1; + if (zret) + goto retz1; + if (big) { + if (esign) { +#ifdef IEEE_Arith + switch (rounding) { + case Round_up: + if (sign) + break; + goto ret_tiny; + case Round_down: + if (!sign) + break; + goto ret_tiny; + } +#endif + goto retz; +#ifdef IEEE_Arith +ret_tinyf: + Bfree(b MTa); +ret_tiny: + Set_errno(ERANGE); + word0(rvp) = 0; + word1(rvp) = 1; + return; +#endif /* IEEE_Arith */ + } + switch (rounding) { + case Round_near: + goto ovfl1; + case Round_up: + if (!sign) + goto ovfl1; + goto ret_big; + case Round_down: + if (sign) + goto ovfl1; + goto ret_big; + } +ret_big: + word0(rvp) = Big0; + word1(rvp) = Big1; + return; + } + n = s1 - s0 - 1; + for (k = 0; n > (1 << (kshift - 2)) - 1; n >>= 1) + k++; + b = Balloc(k MTa); + x = b->x; + havedig = n = nz = 0; + L = 0; +#ifdef USE_LOCALE + for (i = 0; decimalpoint[i + 1]; ++i) + ; +#endif + while (s1 > s0) { +#ifdef USE_LOCALE + if (*--s1 == decimalpoint[i]) { + s1 -= i; + continue; + } +#else + if (*--s1 == '.') + continue; +#endif + if ((d = hexdig[*s1])) + havedig = 1; + else if (!havedig) { + e += 4; + continue; + } + if (n == ULbits) { + *x++ = L; + L = 0; + n = 0; + } + L |= (d & 0x0f) << n; + n += 4; + } + *x++ = L; + b->wds = n = x - b->x; + nb = ULbits * n - hi0bits(L); + nbits = Nbits; + lostbits = 0; + x = b->x; + if (nb > nbits) { + n = nb - nbits; + if (any_on(b, n)) { + lostbits = 1; + k = n - 1; + if (x[k >> kshift] & 1 << (k & kmask)) { + lostbits = 2; + if (k > 0 && any_on(b, k)) + lostbits = 3; + } + } + rshift(b, n); + e += n; + } else if (nb < nbits) { + n = nbits - nb; + b = lshift(b, n MTa); + e -= n; + x = b->x; + } + if (e > emax) { +ovfl: + Bfree(b MTa); +ovfl1: + Set_errno(ERANGE); +#ifdef Honor_FLT_ROUNDS + switch (rounding) { + case Round_zero: + goto ret_big; + case Round_down: + if (!sign) + goto ret_big; + break; + case Round_up: + if (sign) + goto ret_big; + } +#endif + word0(rvp) = Exp_mask; + word1(rvp) = 0; + return; + } + denorm = 0; + if (e < emin) { + denorm = 1; + n = emin - e; + if (n >= nbits) { +#ifdef IEEE_Arith /*{*/ + switch (rounding) { + case Round_near: + if (n == nbits && + (n < 2 || lostbits || any_on(b, n - 1))) + goto ret_tinyf; + break; + case Round_up: + if (!sign) + goto ret_tinyf; + break; + case Round_down: + if (sign) + goto ret_tinyf; + } +#endif /* } IEEE_Arith */ + Bfree(b MTa); +retz: + Set_errno(ERANGE); +retz1: + rvp->d = 0.; + return; + } + k = n - 1; +#ifdef IEEE_Arith + if (!k) { + switch (rounding) { + case Round_near: + if (((b->x[0] & 3) == 3) || + (lostbits && (b->x[0] & 1))) { + multadd(b, 1, 1 MTa); +emin_check: + if (b->x[1] == (1 << (Exp_shift + 1))) { + rshift(b, 1); + e = emin; + goto normal; + } + } + break; + case Round_up: + if (!sign && (lostbits || (b->x[0] & 1))) { +incr_denorm: + multadd(b, 1, 2 MTa); + check_denorm = 1; + lostbits = 0; + goto emin_check; + } + break; + case Round_down: + if (sign && (lostbits || (b->x[0] & 1))) + goto incr_denorm; + break; + } + } +#endif + if (lostbits) + lostbits = 1; + else if (k > 0) + lostbits = any_on(b, k); +#ifdef IEEE_Arith + else if (check_denorm) + goto no_lostbits; +#endif + if (x[k >> kshift] & 1 << (k & kmask)) + lostbits |= 2; +#ifdef IEEE_Arith +no_lostbits: +#endif + nbits -= n; + rshift(b, n); + e = emin; + } + if (lostbits) { + up = 0; + switch (rounding) { + case Round_zero: + break; + case Round_near: + if (lostbits & 2 && (lostbits & 1) | (x[0] & 1)) + up = 1; + break; + case Round_up: + up = 1 - sign; + break; + case Round_down: + up = sign; + } + if (up) { + k = b->wds; + b = increment(b MTa); + x = b->x; + if (!denorm && + (b->wds > k || ((n = nbits & kmask) != 0 && + hi0bits(x[k - 1]) < 32 - n))) { + rshift(b, 1); + if (++e > Emax) + goto ovfl; + } + } + } +#ifdef IEEE_Arith + if (denorm) + word0(rvp) = b->wds > 1 ? b->x[1] & ~0x100000 : 0; + else { +normal: + word0(rvp) = (b->x[1] & ~0x100000) | ((e + 0x3ff + 52) << 20); + } + word1(rvp) = b->x[0]; +#endif +#ifdef IBM + if ((j = e & 3)) { + k = b->x[0] & ((1 << j) - 1); + rshift(b, j); + if (k) { + switch (rounding) { + case Round_up: + if (!sign) + increment(b); + break; + case Round_down: + if (sign) + increment(b); + break; + case Round_near: + j = 1 << (j - 1); + if (k & j && ((k & (j - 1)) | lostbits)) + increment(b); + } + } + } + e >>= 2; + word0(rvp) = b->x[1] | ((e + 65 + 13) << 24); + word1(rvp) = b->x[0]; +#endif +#ifdef VAX + /* The next two lines ignore swap of low- and high-order 2 bytes. */ + /* word0(rvp) = (b->x[1] & ~0x800000) | ((e + 129 + 55) << 23); */ + /* word1(rvp) = b->x[0]; */ + word0(rvp) = ((b->x[1] & ~0x800000) >> 16) | ((e + 129 + 55) << 7) | + (b->x[1] << 16); + word1(rvp) = (b->x[0] >> 16) | (b->x[0] << 16); +#endif + Bfree(b MTa); +} +#endif /*!NO_HEX_FP}*/ + +static int dshift(Bigint *b, int p2) +{ + int rv = hi0bits(b->x[b->wds - 1]) - 4; + if (p2 > 0) + rv -= p2; + return rv & kmask; +} + +static int quorem(Bigint *b, Bigint *S) +{ + int n; + ULong *bx, *bxe, q, *sx, *sxe; +#ifdef ULLong + ULLong borrow, carry, y, ys; +#else + ULong borrow, carry, y, ys; +#ifdef Pack_32 + ULong si, z, zs; +#endif +#endif + + n = S->wds; +#ifdef DEBUG + /*debug*/ if (b->wds > n) + /*debug*/ Bug("oversize b in quorem"); +#endif + if (b->wds < n) + return 0; + sx = S->x; + sxe = sx + --n; + bx = b->x; + bxe = bx + n; + q = *bxe / (*sxe + 1); /* ensure q <= true quotient */ +#ifdef DEBUG +#ifdef NO_STRTOD_BIGCOMP + /*debug*/ if (q > 9) +#else + /* An oversized q is possible when quorem is called from bigcomp and */ + /* the input is near, e.g., twice the smallest denormalized number. */ + /*debug*/ if (q > 15) +#endif + /*debug*/ Bug("oversized quotient in quorem"); +#endif + if (q) { + borrow = 0; + carry = 0; + do { +#ifdef ULLong + ys = *sx++ * (ULLong)q + carry; + carry = ys >> 32; + y = *bx - (ys & FFFFFFFF) - borrow; + borrow = y >> 32 & (ULong)1; + *bx++ = y & FFFFFFFF; +#else +#ifdef Pack_32 + si = *sx++; + ys = (si & 0xffff) * q + carry; + zs = (si >> 16) * q + (ys >> 16); + carry = zs >> 16; + y = (*bx & 0xffff) - (ys & 0xffff) - borrow; + borrow = (y & 0x10000) >> 16; + z = (*bx >> 16) - (zs & 0xffff) - borrow; + borrow = (z & 0x10000) >> 16; + Storeinc(bx, z, y); +#else + ys = *sx++ * q + carry; + carry = ys >> 16; + y = *bx - (ys & 0xffff) - borrow; + borrow = (y & 0x10000) >> 16; + *bx++ = y & 0xffff; +#endif +#endif + } while (sx <= sxe); + if (!*bxe) { + bx = b->x; + while (--bxe > bx && !*bxe) + --n; + b->wds = n; + } + } + if (cmp(b, S) >= 0) { + q++; + borrow = 0; + carry = 0; + bx = b->x; + sx = S->x; + do { +#ifdef ULLong + ys = *sx++ + carry; + carry = ys >> 32; + y = *bx - (ys & FFFFFFFF) - borrow; + borrow = y >> 32 & (ULong)1; + *bx++ = y & FFFFFFFF; +#else +#ifdef Pack_32 + si = *sx++; + ys = (si & 0xffff) + carry; + zs = (si >> 16) + (ys >> 16); + carry = zs >> 16; + y = (*bx & 0xffff) - (ys & 0xffff) - borrow; + borrow = (y & 0x10000) >> 16; + z = (*bx >> 16) - (zs & 0xffff) - borrow; + borrow = (z & 0x10000) >> 16; + Storeinc(bx, z, y); +#else + ys = *sx++ + carry; + carry = ys >> 16; + y = *bx - (ys & 0xffff) - borrow; + borrow = (y & 0x10000) >> 16; + *bx++ = y & 0xffff; +#endif +#endif + } while (sx <= sxe); + bx = b->x; + bxe = bx + n; + if (!*bxe) { + while (--bxe > bx && !*bxe) + --n; + b->wds = n; + } + } + return q; +} + +#if defined(Avoid_Underflow) || !defined(NO_STRTOD_BIGCOMP) /*{*/ +static double sulp(U *x, BCinfo *bc) +{ + U u; + double rv; + int i; + + rv = ulp(x); + if (!bc->scale || + (i = 2 * P + 1 - ((word0(x) & Exp_mask) >> Exp_shift)) <= 0) + return rv; /* Is there an example where i <= 0 ? */ + word0(&u) = Exp_1 + (i << Exp_shift); + word1(&u) = 0; + return rv * u.d; +} +#endif /*}*/ + +#ifndef NO_STRTOD_BIGCOMP +static void bigcomp(U *rv, const char *s0, BCinfo *bc MTd) +{ + Bigint *b, *d; + int b2, bbits, d2, dd, dig, dsign, i, j, nd, nd0, p2, p5, speccase; + + dsign = bc->dsign; + nd = bc->nd; + nd0 = bc->nd0; + p5 = nd + bc->e0 - 1; + speccase = 0; +#ifndef Sudden_Underflow + if (rv->d == 0.) { /* special case: value near underflow-to-zero */ + /* threshold was rounded to zero */ + b = i2b(1 MTa); + p2 = Emin - P + 1; + bbits = 1; +#ifdef Avoid_Underflow + word0(rv) = (P + 2) << Exp_shift; +#else + word1(rv) = 1; +#endif + i = 0; +#ifdef Honor_FLT_ROUNDS + if (bc->rounding == 1) +#endif + { + speccase = 1; + --p2; + dsign = 0; + goto have_i; + } + } else +#endif + b = d2b(rv, &p2, &bbits MTa); +#ifdef Avoid_Underflow + p2 -= bc->scale; +#endif + /* floor(log2(rv)) == bbits - 1 + p2 */ + /* Check for denormal case. */ + i = P - bbits; + if (i > (j = P - Emin - 1 + p2)) { +#ifdef Sudden_Underflow + Bfree(b MTa); + b = i2b(1 MTa); + p2 = Emin; + i = P - 1; +#ifdef Avoid_Underflow + word0(rv) = (1 + bc->scale) << Exp_shift; +#else + word0(rv) = Exp_msk1; +#endif + word1(rv) = 0; +#else + i = j; +#endif + } +#ifdef Honor_FLT_ROUNDS + if (bc->rounding != 1) { + if (i > 0) + b = lshift(b, i MTa); + if (dsign) + b = increment(b MTa); + } else +#endif + { + b = lshift(b, ++i MTa); + b->x[0] |= 1; + } +#ifndef Sudden_Underflow +have_i: +#endif + p2 -= p5 + i; + d = i2b(1 MTa); + /* Arrange for convenient computation of quotients: + * shift left if necessary so divisor has 4 leading 0 bits. + */ + if (p5 > 0) + d = pow5mult(d, p5 MTa); + else if (p5 < 0) + b = pow5mult(b, -p5 MTa); + if (p2 > 0) { + b2 = p2; + d2 = 0; + } else { + b2 = 0; + d2 = -p2; + } + i = dshift(d, d2); + if ((b2 += i) > 0) + b = lshift(b, b2 MTa); + if ((d2 += i) > 0) + d = lshift(d, d2 MTa); + + /* Now b/d = exactly half-way between the two floating-point values */ + /* on either side of the input string. Compute first digit of b/d. */ + + if (!(dig = quorem(b, d))) { + b = multadd(b, 10, 0 MTa); /* very unlikely */ + dig = quorem(b, d); + } + + /* Compare b/d with s0 */ + + for (i = 0; i < nd0;) { + if ((dd = s0[i++] - '0' - dig)) + goto ret; + if (!b->x[0] && b->wds == 1) { + if (i < nd) + dd = 1; + goto ret; + } + b = multadd(b, 10, 0 MTa); + dig = quorem(b, d); + } + for (j = bc->dp1; i++ < nd;) { + if ((dd = s0[j++] - '0' - dig)) + goto ret; + if (!b->x[0] && b->wds == 1) { + if (i < nd) + dd = 1; + goto ret; + } + b = multadd(b, 10, 0 MTa); + dig = quorem(b, d); + } + if (dig > 0 || b->x[0] || b->wds > 1) + dd = -1; +ret: + Bfree(b MTa); + Bfree(d MTa); +#ifdef Honor_FLT_ROUNDS + if (bc->rounding != 1) { + if (dd < 0) { + if (bc->rounding == 0) { + if (!dsign) + goto retlow1; + } else if (dsign) + goto rethi1; + } else if (dd > 0) { + if (bc->rounding == 0) { + if (dsign) + goto rethi1; + goto ret1; + } + if (!dsign) + goto rethi1; + dval(rv) += 2. * sulp(rv, bc); + } else { + bc->inexact = 0; + if (dsign) + goto rethi1; + } + } else +#endif + if (speccase) { + if (dd <= 0) + rv->d = 0.; + } else if (dd < 0) { + if (!dsign) /* does not happen for round-near */ +retlow1: + dval(rv) -= sulp(rv, bc); + } else if (dd > 0) { + if (dsign) { +rethi1: + dval(rv) += sulp(rv, bc); + } + } else { + /* Exact half-way case: apply round-even rule. */ + if ((j = ((word0(rv) & Exp_mask) >> Exp_shift) - bc->scale) <= + 0) { + i = 1 - j; + if (i <= 31) { + if (word1(rv) & (0x1 << i)) + goto odd; + } else if (word0(rv) & (0x1 << (i - 32))) + goto odd; + } else if (word1(rv) & 1) { +odd: + if (dsign) + goto rethi1; + goto retlow1; + } + } + +#ifdef Honor_FLT_ROUNDS +ret1: +#endif + return; +} +#endif /* NO_STRTOD_BIGCOMP */ + +double strtod(const char *s00, char **se) +{ + int bb2, bb5, bbe, bd2, bd5, bbbits, bs2, c, e, e1; + int esign, i, j, k, nd, nd0, nf, nz, nz0, nz1, sign; + const char *s, *s0, *s1; + double aadj, aadj1; + Long L; + U aadj2, adj, rv, rv0; + ULong y, z; + BCinfo bc; + Bigint *bb, *bb1, *bd, *bd0, *bs, *delta; +#ifdef USE_BF96 + ULLong bhi, blo, brv, t00, t01, t02, t10, t11, terv, tg, tlo, yz; + const BF96 *p10; + int bexact, erv; +#endif +#ifdef Avoid_Underflow + ULong Lsb, Lsb1; +#endif +#ifdef SET_INEXACT + int oldinexact; +#endif +#ifndef NO_STRTOD_BIGCOMP + int req_bigcomp = 0; +#endif +#ifdef MULTIPLE_THREADS + ThInfo *TI = 0; +#endif +#ifdef Honor_FLT_ROUNDS /*{*/ +#ifdef Trust_FLT_ROUNDS /*{{ only define this if FLT_ROUNDS really works! */ + bc.rounding = Flt_Rounds; +#else /*}{*/ + bc.rounding = 1; + switch (fegetround()) { + case FE_TOWARDZERO: + bc.rounding = 0; + break; + case FE_UPWARD: + bc.rounding = 2; + break; + case FE_DOWNWARD: + bc.rounding = 3; + } +#endif /*}}*/ +#endif /*}*/ +#ifdef USE_LOCALE + const char *s2; +#endif + + sign = nz0 = nz1 = nz = bc.dplen = bc.uflchk = 0; + dval(&rv) = 0.; + for (s = s00;; s++) + switch (*s) { + case '-': + sign = 1; + /* no break */ + case '+': + if (*++s) + goto break2; + /* no break */ + case 0: + goto ret0; + case '\t': + case '\n': + case '\v': + case '\f': + case '\r': + case ' ': + continue; + default: + goto break2; + } +break2: + if (*s == '0') { +#ifndef NO_HEX_FP /*{*/ + switch (s[1]) { + case 'x': + case 'X': +#ifdef Honor_FLT_ROUNDS + gethex(&s, &rv, bc.rounding, sign MTb); +#else + gethex(&s, &rv, 1, sign MTb); +#endif + goto ret; + } +#endif /*}*/ + nz0 = 1; + while (*++s == '0') + ; + if (!*s) + goto ret; + } + s0 = s; + nd = nf = 0; +#ifdef USE_BF96 + yz = 0; + for (; (c = *s) >= '0' && c <= '9'; nd++, s++) + if (nd < 19) + yz = 10 * yz + c - '0'; +#else + y = z = 0; + for (; (c = *s) >= '0' && c <= '9'; nd++, s++) + if (nd < 9) + y = 10 * y + c - '0'; + else if (nd < DBL_DIG + 2) + z = 10 * z + c - '0'; +#endif + nd0 = nd; + bc.dp0 = bc.dp1 = s - s0; + for (s1 = s; s1 > s0 && *--s1 == '0';) + ++nz1; +#ifdef USE_LOCALE + s1 = localeconv()->decimal_point; + if (c == *s1) { + c = '.'; + if (*++s1) { + s2 = s; + for (;;) { + if (*++s2 != *s1) { + c = 0; + break; + } + if (!*++s1) { + s = s2; + break; + } + } + } + } +#endif + if (c == '.') { + c = *++s; + bc.dp1 = s - s0; + bc.dplen = bc.dp1 - bc.dp0; + if (!nd) { + for (; c == '0'; c = *++s) + nz++; + if (c > '0' && c <= '9') { + bc.dp0 = s0 - s; + bc.dp1 = bc.dp0 + bc.dplen; + s0 = s; + nf += nz; + nz = 0; + goto have_dig; + } + goto dig_done; + } + for (; c >= '0' && c <= '9'; c = *++s) { +have_dig: + nz++; + if (c -= '0') { + nf += nz; + i = 1; +#ifdef USE_BF96 + for (; i < nz; ++i) { + if (++nd <= 19) + yz *= 10; + } + if (++nd <= 19) + yz = 10 * yz + c; +#else + for (; i < nz; ++i) { + if (nd++ < 9) + y *= 10; + else if (nd <= DBL_DIG + 2) + z *= 10; + } + if (nd++ < 9) + y = 10 * y + c; + else if (nd <= DBL_DIG + 2) + z = 10 * z + c; +#endif + nz = nz1 = 0; + } + } + } +dig_done: + e = 0; + if (c == 'e' || c == 'E') { + if (!nd && !nz && !nz0) { + goto ret0; + } + s00 = s; + esign = 0; + switch (c = *++s) { + case '-': + esign = 1; + case '+': + c = *++s; + } + if (c >= '0' && c <= '9') { + while (c == '0') + c = *++s; + if (c > '0' && c <= '9') { + L = c - '0'; + while ((c = *++s) >= '0' && c <= '9') { + if (L <= 19999) + L = 10 * L + c - '0'; + } + if (L > 19999) + /* Avoid confusion from exponents + * so large that e might overflow. + */ + e = 19999; /* safe for 16 bit ints */ + else + e = (int)L; + if (esign) + e = -e; + } else + e = 0; + } else + s = s00; + } + if (!nd) { + if (!nz && !nz0) { +#ifdef INFNAN_CHECK /*{*/ + /* Check for Nan and Infinity */ + if (!bc.dplen) + switch (c) { + case 'i': + case 'I': + if (match(&s, "nf")) { + --s; + if (!match(&s, "inity")) + ++s; + word0(&rv) = 0x7ff00000; + word1(&rv) = 0; + goto ret; + } + break; + case 'n': + case 'N': + if (match(&s, "an")) { + word0(&rv) = NAN_WORD0; + word1(&rv) = NAN_WORD1; +#ifndef No_Hex_NaN + if (*s == '(') /*)*/ + hexnan(&rv, &s); +#endif + goto ret; + } + } +#endif /*} INFNAN_CHECK */ +ret0: + s = s00; + sign = 0; + } + goto ret; + } + bc.e0 = e1 = e -= nf; + + /* Now we have nd0 digits, starting at s0, followed by a + * decimal point, followed by nd-nd0 digits. The number we're + * after is the integer represented by those digits times + * 10**e */ + + if (!nd0) + nd0 = nd; +#ifndef USE_BF96 + k = nd < DBL_DIG + 2 ? nd : DBL_DIG + 2; + dval(&rv) = y; + if (k > 9) { +#ifdef SET_INEXACT + if (k > DBL_DIG) + oldinexact = get_inexact(); +#endif + dval(&rv) = tens[k - 9] * dval(&rv) + z; + } +#endif + bd0 = 0; + if (nd <= DBL_DIG +#ifndef RND_PRODQUOT +#ifndef Honor_FLT_ROUNDS + && Flt_Rounds == 1 +#endif +#endif + ) { +#ifdef USE_BF96 + dval(&rv) = yz; +#endif + if (!e) + goto ret; +#ifndef ROUND_BIASED_without_Round_Up + if (e > 0) { + if (e <= Ten_pmax) { +#ifdef SET_INEXACT + bc.inexact = 0; + oldinexact = 1; +#endif +#ifdef VAX + goto vax_ovfl_check; +#else +#ifdef Honor_FLT_ROUNDS + /* round correctly FLT_ROUNDS = 2 or 3 */ + if (sign) { + rv.d = -rv.d; + sign = 0; + } +#endif + /* rv = */ rounded_product(dval(&rv), tens[e]); + goto ret; +#endif + } + i = DBL_DIG - nd; + if (e <= Ten_pmax + i) { + /* A fancier test would sometimes let us do + * this for larger i values. + */ +#ifdef SET_INEXACT + bc.inexact = 0; + oldinexact = 1; +#endif +#ifdef Honor_FLT_ROUNDS + /* round correctly FLT_ROUNDS = 2 or 3 */ + if (sign) { + rv.d = -rv.d; + sign = 0; + } +#endif + e -= i; + dval(&rv) *= tens[i]; +#ifdef VAX + /* VAX exponent range is so narrow we must + * worry about overflow here... + */ +vax_ovfl_check: + word0(&rv) -= P * Exp_msk1; + /* rv = */ rounded_product(dval(&rv), tens[e]); + if ((word0(&rv) & Exp_mask) > + Exp_msk1 * (DBL_MAX_EXP + Bias - 1 - P)) + goto ovfl; + word0(&rv) += P * Exp_msk1; +#else + /* rv = */ rounded_product(dval(&rv), tens[e]); +#endif + goto ret; + } + } +#ifndef Inaccurate_Divide + else if (e >= -Ten_pmax) { +#ifdef SET_INEXACT + bc.inexact = 0; + oldinexact = 1; +#endif +#ifdef Honor_FLT_ROUNDS + /* round correctly FLT_ROUNDS = 2 or 3 */ + if (sign) { + rv.d = -rv.d; + sign = 0; + } +#endif + /* rv = */ rounded_quotient(dval(&rv), tens[-e]); + goto ret; + } +#endif +#endif /* ROUND_BIASED_without_Round_Up */ + } +#ifdef USE_BF96 + k = nd < 19 ? nd : 19; +#endif + e1 += nd - k; /* scale factor = 10^e1 */ + +#ifdef IEEE_Arith +#ifdef SET_INEXACT + bc.inexact = 1; +#ifndef USE_BF96 + if (k <= DBL_DIG) +#endif + oldinexact = get_inexact(); +#endif +#ifdef Honor_FLT_ROUNDS + if (bc.rounding >= 2) { + if (sign) + bc.rounding = bc.rounding == 2 ? 0 : 2; + else if (bc.rounding != 2) + bc.rounding = 0; + } +#endif +#endif /*IEEE_Arith*/ + +#ifdef USE_BF96 /*{*/ + Debug(++dtoa_stats[0]); + i = e1 + 342; + if (i < 0) + goto undfl; + if (i > 650) + goto ovfl; + p10 = &pten[i]; + brv = yz; + /* shift brv left, with i = number of bits shifted */ + i = 0; + if (!(brv & 0xffffffff00000000ull)) { + i = 32; + brv <<= 32; + } + if (!(brv & 0xffff000000000000ull)) { + i += 16; + brv <<= 16; + } + if (!(brv & 0xff00000000000000ull)) { + i += 8; + brv <<= 8; + } + if (!(brv & 0xf000000000000000ull)) { + i += 4; + brv <<= 4; + } + if (!(brv & 0xc000000000000000ull)) { + i += 2; + brv <<= 2; + } + if (!(brv & 0x8000000000000000ull)) { + i += 1; + brv <<= 1; + } + erv = (64 + 0x3fe) + p10->e - i; + if (erv <= 0 && nd > 19) + goto many_digits; /* denormal: may need to look at all digits */ + bhi = brv >> 32; + blo = brv & 0xffffffffull; + /* Unsigned 32-bit ints lie in [0,2^32-1] and */ + /* unsigned 64-bit ints lie in [0, 2^64-1]. The product of two unsigned + */ + /* 32-bit ints is <= 2^64 - 2*2^32-1 + 1 = 2^64 - 1 - 2*(2^32 - 1), so + */ + /* we can add two unsigned 32-bit ints to the product of two such ints, + */ + /* and 64 bits suffice to contain the result. */ + t01 = bhi * p10->b1; + t10 = blo * p10->b0 + (t01 & 0xffffffffull); + t00 = bhi * p10->b0 + (t01 >> 32) + (t10 >> 32); + if (t00 & 0x8000000000000000ull) { + if ((t00 & 0x3ff) && (~t00 & 0x3fe)) { /* unambiguous result? */ + if (nd > 19 && + ((t00 + (1 << i) + 2) & 0x400) ^ (t00 & 0x400)) + goto many_digits; + if (erv <= 0) + goto denormal; +#ifdef Honor_FLT_ROUNDS + switch (bc.rounding) { + case 0: + goto noround; + case 2: + goto roundup; + } +#endif + if (t00 & 0x400 && t00 & 0xbff) + goto roundup; + goto noround; + } + } else { + if ((t00 & 0x1ff) && (~t00 & 0x1fe)) { /* unambiguous result? */ + if (nd > 19 && + ((t00 + (1 << i) + 2) & 0x200) ^ (t00 & 0x200)) + goto many_digits; + if (erv <= 1) + goto denormal1; +#ifdef Honor_FLT_ROUNDS + switch (bc.rounding) { + case 0: + goto noround1; + case 2: + goto roundup1; + } +#endif + if (t00 & 0x200) + goto roundup1; + goto noround1; + } + } + /* 3 multiplies did not suffice; try a 96-bit approximation */ + Debug(++dtoa_stats[1]); + t02 = bhi * p10->b2; + t11 = blo * p10->b1 + (t02 & 0xffffffffull); + bexact = 1; + if (e1 < 0 || e1 > 41 || (t10 | t11) & 0xffffffffull || nd > 19) + bexact = 0; + tlo = (t10 & 0xffffffffull) + (t02 >> 32) + (t11 >> 32); + if (!bexact && (tlo + 0x10) >> 32 > tlo >> 32) + goto many_digits; + t00 += tlo >> 32; + if (t00 & 0x8000000000000000ull) { + if (erv <= 0) { /* denormal result */ + if (nd >= 20 || !((tlo & 0xfffffff0) | (t00 & 0x3ff))) + goto many_digits; +denormal: + if (erv <= -52) { +#ifdef Honor_FLT_ROUNDS + switch (bc.rounding) { + case 0: + goto undfl; + case 2: + goto tiniest; + } +#endif + if (erv < -52 || !(t00 & 0x7fffffffffffffffull)) + goto undfl; + goto tiniest; + } + tg = 1ull << (11 - erv); + t00 &= ~(tg - 1); /* clear low bits */ +#ifdef Honor_FLT_ROUNDS + switch (bc.rounding) { + case 0: + goto noround_den; + case 2: + goto roundup_den; + } +#endif + if (t00 & tg) { +#ifdef Honor_FLT_ROUNDS +roundup_den: +#endif + t00 += tg << 1; + if (!(t00 & 0x8000000000000000ull)) { + if (++erv > 0) + goto smallest_normal; + t00 = 0x8000000000000000ull; + } + } +#ifdef Honor_FLT_ROUNDS +noround_den: +#endif + LLval(&rv) = t00 >> (12 - erv); + Set_errno(ERANGE); + goto ret; + } + if (bexact) { +#ifdef SET_INEXACT + if (!(t00 & 0x7ff) && !(tlo & 0xffffffffull)) { + bc.inexact = 0; + goto noround; + } +#endif +#ifdef Honor_FLT_ROUNDS + switch (bc.rounding) { + case 2: + if (t00 & 0x7ff) + goto roundup; + case 0: + goto noround; + } +#endif + if (t00 & 0x400 && (tlo & 0xffffffff) | (t00 & 0xbff)) + goto roundup; + goto noround; + } + if ((tlo & 0xfffffff0) | (t00 & 0x3ff) && + (nd <= 19 || + ((t00 + (1ull << i)) & 0xfffffffffffffc00ull) == + (t00 & 0xfffffffffffffc00ull))) { + /* Unambiguous result. */ + /* If nd > 19, then incrementing the 19th digit */ + /* does not affect rv. */ +#ifdef Honor_FLT_ROUNDS + switch (bc.rounding) { + case 0: + goto noround; + case 2: + goto roundup; + } +#endif + if (t00 & 0x400) { /* round up */ +roundup: + t00 += 0x800; + if (!(t00 & 0x8000000000000000ull)) { + /* rounded up to a power of 2 */ + if (erv >= 0x7fe) + goto ovfl; + terv = erv + 1; + LLval(&rv) = terv << 52; + goto ret; + } + } +noround: + if (erv >= 0x7ff) + goto ovfl; + terv = erv; + LLval(&rv) = (terv << 52) | + ((t00 & 0x7ffffffffffff800ull) >> 11); + goto ret; + } + } else { + if (erv <= 1) { /* denormal result */ + if (nd >= 20 || !((tlo & 0xfffffff0) | (t00 & 0x1ff))) + goto many_digits; +denormal1: + if (erv <= -51) { +#ifdef Honor_FLT_ROUNDS + switch (bc.rounding) { + case 0: + goto undfl; + case 2: + goto tiniest; + } +#endif + if (erv < -51 || !(t00 & 0x3fffffffffffffffull)) + goto undfl; +tiniest: + LLval(&rv) = 1; + Set_errno(ERANGE); + goto ret; + } + tg = 1ull << (11 - erv); +#ifdef Honor_FLT_ROUNDS + switch (bc.rounding) { + case 0: + goto noround1_den; + case 2: + goto roundup1_den; + } +#endif + if (t00 & tg) { +#ifdef Honor_FLT_ROUNDS +roundup1_den: +#endif + if (0x8000000000000000ull & + (t00 += (tg << 1)) && + erv == 1) { +smallest_normal: + LLval(&rv) = 0x0010000000000000ull; + goto ret; + } + } +#ifdef Honor_FLT_ROUNDS +noround1_den: +#endif + if (erv <= -52) + goto undfl; + LLval(&rv) = t00 >> (12 - erv); + Set_errno(ERANGE); + goto ret; + } + if (bexact) { +#ifdef SET_INEXACT + if (!(t00 & 0x3ff) && !(tlo & 0xffffffffull)) { + bc.inexact = 0; + goto noround1; + } +#endif +#ifdef Honor_FLT_ROUNDS + switch (bc.rounding) { + case 2: + if (t00 & 0x3ff) + goto roundup1; + case 0: + goto noround1; + } +#endif + if (t00 & 0x200 && (t00 & 0x5ff || tlo)) + goto roundup1; + goto noround1; + } + if ((tlo & 0xfffffff0) | (t00 & 0x1ff) && + (nd <= 19 || + ((t00 + (1ull << i)) & 0x7ffffffffffffe00ull) == + (t00 & 0x7ffffffffffffe00ull))) { + /* Unambiguous result. */ +#ifdef Honor_FLT_ROUNDS + switch (bc.rounding) { + case 0: + goto noround1; + case 2: + goto roundup1; + } +#endif + if (t00 & 0x200) { /* round up */ +roundup1: + t00 += 0x400; + if (!(t00 & 0x4000000000000000ull)) { + /* rounded up to a power of 2 */ + if (erv >= 0x7ff) + goto ovfl; + terv = erv; + LLval(&rv) = terv << 52; + goto ret; + } + } +noround1: + if (erv >= 0x800) + goto ovfl; + terv = erv - 1; + LLval(&rv) = (terv << 52) | + ((t00 & 0x3ffffffffffffc00ull) >> 10); + goto ret; + } + } +many_digits: + Debug(++dtoa_stats[2]); + if (nd > 17) { + if (nd > 18) { + yz /= 100; + e1 += 2; + } else { + yz /= 10; + e1 += 1; + } + y = yz / 100000000; + } else if (nd > 9) { + i = nd - 9; + y = (yz >> i) / pfive[i - 1]; + } else + y = yz; + dval(&rv) = yz; +#endif /*}*/ + +#ifdef IEEE_Arith +#ifdef Avoid_Underflow + bc.scale = 0; +#endif +#endif /*IEEE_Arith*/ + + /* Get starting approximation = rv * 10**e1 */ + + if (e1 > 0) { + if ((i = e1 & 15)) + dval(&rv) *= tens[i]; + if (e1 &= ~15) { + if (e1 > DBL_MAX_10_EXP) { +ovfl: + /* Can't trust HUGE_VAL */ +#ifdef IEEE_Arith +#ifdef Honor_FLT_ROUNDS + switch (bc.rounding) { + case 0: /* toward 0 */ + case 3: /* toward -infinity */ + word0(&rv) = Big0; + word1(&rv) = Big1; + break; + default: + word0(&rv) = Exp_mask; + word1(&rv) = 0; + } +#else /*Honor_FLT_ROUNDS*/ + word0(&rv) = Exp_mask; + word1(&rv) = 0; +#endif /*Honor_FLT_ROUNDS*/ +#ifdef SET_INEXACT + /* set overflow bit */ + dval(&rv0) = 1e300; + dval(&rv0) *= dval(&rv0); +#endif +#else /*IEEE_Arith*/ + word0(&rv) = Big0; + word1(&rv) = Big1; +#endif /*IEEE_Arith*/ +range_err: + if (bd0) { + Bfree(bb MTb); + Bfree(bd MTb); + Bfree(bs MTb); + Bfree(bd0 MTb); + Bfree(delta MTb); + } + Set_errno(ERANGE); + goto ret; + } + e1 >>= 4; + for (j = 0; e1 > 1; j++, e1 >>= 1) + if (e1 & 1) + dval(&rv) *= bigtens[j]; + /* The last multiplication could overflow. */ + word0(&rv) -= P * Exp_msk1; + dval(&rv) *= bigtens[j]; + if ((z = word0(&rv) & Exp_mask) > + Exp_msk1 * (DBL_MAX_EXP + Bias - P)) + goto ovfl; + if (z > Exp_msk1 * (DBL_MAX_EXP + Bias - 1 - P)) { + /* set to largest number */ + /* (Can't trust DBL_MAX) */ + word0(&rv) = Big0; + word1(&rv) = Big1; + } else + word0(&rv) += P * Exp_msk1; + } + } else if (e1 < 0) { + e1 = -e1; + if ((i = e1 & 15)) + dval(&rv) /= tens[i]; + if (e1 >>= 4) { + if (e1 >= 1 << n_bigtens) + goto undfl; +#ifdef Avoid_Underflow + if (e1 & Scale_Bit) + bc.scale = 2 * P; + for (j = 0; e1 > 0; j++, e1 >>= 1) + if (e1 & 1) + dval(&rv) *= tinytens[j]; + if (bc.scale && + (j = 2 * P + 1 - + ((word0(&rv) & Exp_mask) >> Exp_shift)) > 0) { + /* scaled rv is denormal; clear j low bits */ + if (j >= 32) { + if (j > 54) + goto undfl; + word1(&rv) = 0; + if (j >= 53) + word0(&rv) = (P + 2) * Exp_msk1; + else + word0(&rv) &= 0xffffffff + << (j - 32); + } else + word1(&rv) &= 0xffffffff << j; + } +#else + for (j = 0; e1 > 1; j++, e1 >>= 1) + if (e1 & 1) + dval(&rv) *= tinytens[j]; + /* The last multiplication could underflow. */ + dval(&rv0) = dval(&rv); + dval(&rv) *= tinytens[j]; + if (!dval(&rv)) { + dval(&rv) = 2. * dval(&rv0); + dval(&rv) *= tinytens[j]; +#endif + if (!dval(&rv)) { +undfl: + dval(&rv) = 0.; +#ifdef Honor_FLT_ROUNDS + if (bc.rounding == 2) + word1(&rv) = 1; +#endif + goto range_err; + } +#ifndef Avoid_Underflow + word0(&rv) = Tiny0; + word1(&rv) = Tiny1; + /* The refinement below will clean + * this approximation up. + */ + } +#endif + } +} + +/* Now the hard part -- adjusting rv to the correct value.*/ + +/* Put digits into bd: true value = bd * 10^e */ + +bc.nd = nd - nz1; +#ifndef NO_STRTOD_BIGCOMP +bc.nd0 = nd0; /* Only needed if nd > strtod_diglim, but done here */ +/* to silence an erroneous warning about bc.nd0 */ +/* possibly not being initialized. */ +if (nd > strtod_diglim) { + /* ASSERT(strtod_diglim >= 18); 18 == one more than the */ + /* minimum number of decimal digits to distinguish double values */ + /* in IEEE arithmetic. */ + i = j = 18; + if (i > nd0) + j += bc.dplen; + for (;;) { + if (--j < bc.dp1 && j >= bc.dp0) + j = bc.dp0 - 1; + if (s0[j] != '0') + break; + --i; + } + e += nd - i; + nd = i; + if (nd0 > nd) + nd0 = nd; + if (nd < 9) { /* must recompute y */ + y = 0; + for (i = 0; i < nd0; ++i) + y = 10 * y + s0[i] - '0'; + for (j = bc.dp1; i < nd; ++i) + y = 10 * y + s0[j++] - '0'; + } +} +#endif +bd0 = s2b(s0, nd0, nd, y, bc.dplen MTb); + +for (;;) { + bd = Balloc(bd0->k MTb); + Bcopy(bd, bd0); + bb = d2b(&rv, &bbe, &bbbits MTb); /* rv = bb * 2^bbe */ + bs = i2b(1 MTb); + + if (e >= 0) { + bb2 = bb5 = 0; + bd2 = bd5 = e; + } else { + bb2 = bb5 = -e; + bd2 = bd5 = 0; + } + if (bbe >= 0) + bb2 += bbe; + else + bd2 -= bbe; + bs2 = bb2; +#ifdef Honor_FLT_ROUNDS + if (bc.rounding != 1) + bs2++; +#endif +#ifdef Avoid_Underflow + Lsb = LSB; + Lsb1 = 0; + j = bbe - bc.scale; + i = j + bbbits - 1; /* logb(rv) */ + j = P + 1 - bbbits; + if (i < Emin) { /* denormal */ + i = Emin - i; + j -= i; + if (i < 32) + Lsb <<= i; + else if (i < 52) + Lsb1 = Lsb << (i - 32); + else + Lsb1 = Exp_mask; + } +#else /*Avoid_Underflow*/ +#ifdef Sudden_Underflow +#ifdef IBM + j = 1 + 4 * P - 3 - bbbits + ((bbe + bbbits - 1) & 3); +#else + j = P + 1 - bbbits; +#endif +#else /*Sudden_Underflow*/ + j = bbe; + i = j + bbbits - 1; /* logb(rv) */ + if (i < Emin) /* denormal */ + j += P - Emin; + else + j = P + 1 - bbbits; +#endif /*Sudden_Underflow*/ +#endif /*Avoid_Underflow*/ + bb2 += j; + bd2 += j; +#ifdef Avoid_Underflow + bd2 += bc.scale; +#endif + i = bb2 < bd2 ? bb2 : bd2; + if (i > bs2) + i = bs2; + if (i > 0) { + bb2 -= i; + bd2 -= i; + bs2 -= i; + } + if (bb5 > 0) { + bs = pow5mult(bs, bb5 MTb); + bb1 = mult(bs, bb MTb); + Bfree(bb MTb); + bb = bb1; + } + if (bb2 > 0) + bb = lshift(bb, bb2 MTb); + if (bd5 > 0) + bd = pow5mult(bd, bd5 MTb); + if (bd2 > 0) + bd = lshift(bd, bd2 MTb); + if (bs2 > 0) + bs = lshift(bs, bs2 MTb); + delta = diff(bb, bd MTb); + bc.dsign = delta->sign; + delta->sign = 0; + i = cmp(delta, bs); +#ifndef NO_STRTOD_BIGCOMP /*{*/ + if (bc.nd > nd && i <= 0) { + if (bc.dsign) { + /* Must use bigcomp(). */ + req_bigcomp = 1; + break; + } +#ifdef Honor_FLT_ROUNDS + if (bc.rounding != 1) { + if (i < 0) { + req_bigcomp = 1; + break; + } + } else +#endif + i = -1; /* Discarded digits make delta smaller. */ + } +#endif /*}*/ +#ifdef Honor_FLT_ROUNDS /*{*/ + if (bc.rounding != 1) { + if (i < 0) { + /* Error is less than an ulp */ + if (!delta->x[0] && delta->wds <= 1) { + /* exact */ +#ifdef SET_INEXACT + bc.inexact = 0; +#endif + break; + } + if (bc.rounding) { + if (bc.dsign) { + adj.d = 1.; + goto apply_adj; + } + } else if (!bc.dsign) { + adj.d = -1.; + if (!word1(&rv) && !(word0(&rv) & Frac_mask)) { + y = word0(&rv) & Exp_mask; +#ifdef Avoid_Underflow + if (!bc.scale || y > 2 * P * Exp_msk1) +#else + if (y) +#endif + { + delta = lshift(delta, + Log2P MTb); + if (cmp(delta, bs) <= 0) + adj.d = -0.5; + } + } +apply_adj: +#ifdef Avoid_Underflow /*{*/ + if (bc.scale && (y = word0(&rv) & Exp_mask) <= + 2 * P * Exp_msk1) + word0(&adj) += + (2 * P + 1) * Exp_msk1 - y; +#else +#ifdef Sudden_Underflow + if ((word0(&rv) & Exp_mask) <= P * Exp_msk1) { + word0(&rv) += P * Exp_msk1; + dval(&rv) += adj.d * ulp(dval(&rv)); + word0(&rv) -= P * Exp_msk1; + } else +#endif /*Sudden_Underflow*/ +#endif /*Avoid_Underflow}*/ + dval(&rv) += adj.d * ulp(&rv); + } + break; + } + adj.d = ratio(delta, bs); + if (adj.d < 1.) + adj.d = 1.; + if (adj.d <= 0x7ffffffe) { + /* adj = rounding ? ceil(adj) : floor(adj); */ + y = adj.d; + if (y != adj.d) { + if (!((bc.rounding >> 1) ^ bc.dsign)) + y++; + adj.d = y; + } + } +#ifdef Avoid_Underflow /*{*/ + if (bc.scale && (y = word0(&rv) & Exp_mask) <= 2 * P * Exp_msk1) + word0(&adj) += (2 * P + 1) * Exp_msk1 - y; +#else +#ifdef Sudden_Underflow + if ((word0(&rv) & Exp_mask) <= P * Exp_msk1) { + word0(&rv) += P * Exp_msk1; + adj.d *= ulp(dval(&rv)); + if (bc.dsign) + dval(&rv) += adj.d; + else + dval(&rv) -= adj.d; + word0(&rv) -= P * Exp_msk1; + goto cont; + } +#endif /*Sudden_Underflow*/ +#endif /*Avoid_Underflow}*/ + adj.d *= ulp(&rv); + if (bc.dsign) { + if (word0(&rv) == Big0 && word1(&rv) == Big1) + goto ovfl; + dval(&rv) += adj.d; + } else + dval(&rv) -= adj.d; + goto cont; + } +#endif /*}Honor_FLT_ROUNDS*/ + + if (i < 0) { + /* Error is less than half an ulp -- check for + * special case of mantissa a power of two. + */ + if (bc.dsign || word1(&rv) || word0(&rv) & Bndry_mask +#ifdef IEEE_Arith /*{*/ +#ifdef Avoid_Underflow + || (word0(&rv) & Exp_mask) <= (2 * P + 1) * Exp_msk1 +#else + || (word0(&rv) & Exp_mask) <= Exp_msk1 +#endif +#endif /*}*/ + ) { +#ifdef SET_INEXACT + if (!delta->x[0] && delta->wds <= 1) + bc.inexact = 0; +#endif + break; + } + if (!delta->x[0] && delta->wds <= 1) { + /* exact result */ +#ifdef SET_INEXACT + bc.inexact = 0; +#endif + break; + } + delta = lshift(delta, Log2P MTb); + if (cmp(delta, bs) > 0) + goto drop_down; + break; + } + if (i == 0) { + /* exactly half-way between */ + if (bc.dsign) { + if ((word0(&rv) & Bndry_mask1) == Bndry_mask1 && + word1(&rv) == + ( +#ifdef Avoid_Underflow + (bc.scale && + (y = word0(&rv) & Exp_mask) <= + 2 * P * Exp_msk1) ? + (0xffffffff & + (0xffffffff + << (2 * P + 1 - + (y >> Exp_shift)))) : +#endif + 0xffffffff)) { + /*boundary case -- increment exponent*/ + if (word0(&rv) == Big0 && word1(&rv) == Big1) + goto ovfl; + word0(&rv) = (word0(&rv) & Exp_mask) + Exp_msk1 +#ifdef IBM + | Exp_msk1 >> 4 +#endif + ; + word1(&rv) = 0; +#ifdef Avoid_Underflow + bc.dsign = 0; +#endif + break; + } + } else if (!(word0(&rv) & Bndry_mask) && !word1(&rv)) { +drop_down: + /* boundary case -- decrement exponent */ +#ifdef Sudden_Underflow /*{{*/ + L = word0(&rv) & Exp_mask; +#ifdef IBM + if (L < Exp_msk1) +#else +#ifdef Avoid_Underflow + if (L <= (bc.scale ? (2 * P + 1) * Exp_msk1 : Exp_msk1)) +#else + if (L <= Exp_msk1) +#endif /*Avoid_Underflow*/ +#endif /*IBM*/ + { + if (bc.nd > nd) { + bc.uflchk = 1; + break; + } + goto undfl; + } + L -= Exp_msk1; +#else /*Sudden_Underflow}{*/ +#ifdef Avoid_Underflow + if (bc.scale) { + L = word0(&rv) & Exp_mask; + if (L <= + (2 * P + 1) * Exp_msk1) { + if (L > + (P + 2) * Exp_msk1) + /* round even + * ==> */ + /* accept rv */ + break; + /* rv = smallest + * denormal */ + if (bc.nd > nd) { + bc.uflchk = 1; + break; + } + goto undfl; + } + } +#endif /*Avoid_Underflow*/ + L = (word0(&rv) & Exp_mask) - Exp_msk1; +#endif /*Sudden_Underflow}}*/ + word0(&rv) = L | Bndry_mask1; + word1(&rv) = 0xffffffff; +#ifdef IBM + goto cont; +#else +#ifndef NO_STRTOD_BIGCOMP + if (bc.nd > nd) + goto cont; +#endif + break; +#endif + } +#ifndef ROUND_BIASED +#ifdef Avoid_Underflow + if (Lsb1) { + if (!(word0(&rv) & Lsb1)) + break; + } else if (!(word1(&rv) & Lsb)) + break; +#else + if (!(word1(&rv) & LSB)) + break; +#endif +#endif + if (bc.dsign) +#ifdef Avoid_Underflow + dval(&rv) += sulp(&rv, &bc); +#else + dval(&rv) += ulp(&rv); +#endif +#ifndef ROUND_BIASED + else { +#ifdef Avoid_Underflow + dval(&rv) -= sulp(&rv, &bc); +#else + dval(&rv) -= ulp(&rv); +#endif +#ifndef Sudden_Underflow + if (!dval(&rv)) { + if (bc.nd > nd) { + bc.uflchk = 1; + break; + } + goto undfl; + } +#endif + } +#ifdef Avoid_Underflow + bc.dsign = 1 - bc.dsign; +#endif +#endif + break; + } + if ((aadj = ratio(delta, bs)) <= 2.) { + if (bc.dsign) + aadj = aadj1 = 1.; + else if (word1(&rv) || word0(&rv) & Bndry_mask) { +#ifndef Sudden_Underflow + if (word1(&rv) == Tiny1 && !word0(&rv)) { + if (bc.nd > nd) { + bc.uflchk = 1; + break; + } + goto undfl; + } +#endif + aadj = 1.; + aadj1 = -1.; + } else { + /* special case -- power of FLT_RADIX to be */ + /* rounded down... */ + + if (aadj < 2. / FLT_RADIX) + aadj = 1. / FLT_RADIX; + else + aadj *= 0.5; + aadj1 = -aadj; + } + } else { + aadj *= 0.5; + aadj1 = bc.dsign ? aadj : -aadj; +#ifdef Check_FLT_ROUNDS + switch (bc.rounding) { + case 2: /* towards +infinity */ + aadj1 -= 0.5; + break; + case 0: /* towards 0 */ + case 3: /* towards -infinity */ + aadj1 += 0.5; + } +#else + if (Flt_Rounds == 0) + aadj1 += 0.5; +#endif /*Check_FLT_ROUNDS*/ + } + y = word0(&rv) & Exp_mask; + + /* Check for overflow */ + + if (y == Exp_msk1 * (DBL_MAX_EXP + Bias - 1)) { + dval(&rv0) = dval(&rv); + word0(&rv) -= P * Exp_msk1; + adj.d = aadj1 * ulp(&rv); + dval(&rv) += adj.d; + if ((word0(&rv) & Exp_mask) >= + Exp_msk1 * (DBL_MAX_EXP + Bias - P)) { + if (word0(&rv0) == Big0 && word1(&rv0) == Big1) + goto ovfl; + word0(&rv) = Big0; + word1(&rv) = Big1; + goto cont; + } else + word0(&rv) += P * Exp_msk1; + } else { +#ifdef Avoid_Underflow + if (bc.scale && y <= 2 * P * Exp_msk1) { + if (aadj <= 0x7fffffff) { + if ((z = aadj) <= 0) + z = 1; + aadj = z; + aadj1 = bc.dsign ? aadj : -aadj; + } + dval(&aadj2) = aadj1; + word0(&aadj2) += (2 * P + 1) * Exp_msk1 - y; + aadj1 = dval(&aadj2); + adj.d = aadj1 * ulp(&rv); + dval(&rv) += adj.d; + if (rv.d == 0.) +#ifdef NO_STRTOD_BIGCOMP + goto undfl; +#else + { + req_bigcomp = 1; + break; + } +#endif + } else { + adj.d = aadj1 * ulp(&rv); + dval(&rv) += adj.d; + } +#else +#ifdef Sudden_Underflow + if ((word0(&rv) & Exp_mask) <= P * Exp_msk1) { + dval(&rv0) = dval(&rv); + word0(&rv) += P * Exp_msk1; + adj.d = aadj1 * ulp(&rv); + dval(&rv) += adj.d; +#ifdef IBM + if ((word0(&rv) & Exp_mask) < + P * Exp_msk1) +#else + if ((word0(&rv) & Exp_mask) <= + P * Exp_msk1) +#endif + { + if (word0(&rv0) == Tiny0 && + word1(&rv0) == Tiny1) { + if (bc.nd > nd) { + bc.uflchk = 1; + break; + } + goto undfl; + } + word0(&rv) = Tiny0; + word1(&rv) = Tiny1; + goto cont; + } else + word0(&rv) -= P * Exp_msk1; + } else { + adj.d = aadj1 * ulp(&rv); + dval(&rv) += adj.d; + } +#else /*Sudden_Underflow*/ + /* Compute adj so that the IEEE rounding rules + * will correctly round rv + adj in some + * half-way cases. If rv * ulp(rv) is + * denormalized (i.e., y <= (P-1)*Exp_msk1), we + * must adjust aadj to avoid trouble from bits + * lost to denormalization; example: 1.2e-307 . + */ + if (y <= (P - 1) * Exp_msk1 && aadj > 1.) { + aadj1 = (double)(int)(aadj + 0.5); + if (!bc.dsign) + aadj1 = -aadj1; + } + adj.d = aadj1 * ulp(&rv); + dval(&rv) += adj.d; +#endif /*Sudden_Underflow*/ +#endif /*Avoid_Underflow*/ + } + z = word0(&rv) & Exp_mask; +#ifndef SET_INEXACT + if (bc.nd == nd) { +#ifdef Avoid_Underflow + if (!bc.scale) +#endif + if (y == z) { + /* Can we stop now? */ + L = (Long)aadj; + aadj -= L; + /* The tolerances below are conservative. */ + if (bc.dsign || word1(&rv) || + word0(&rv) & Bndry_mask) { + if (aadj < .4999999 || aadj > .5000001) + break; + } else if (aadj < .4999999 / FLT_RADIX) + break; + } + } +#endif +cont: + Bfree(bb MTb); + Bfree(bd MTb); + Bfree(bs MTb); + Bfree(delta MTb); +} +Bfree(bb MTb); +Bfree(bd MTb); +Bfree(bs MTb); +Bfree(bd0 MTb); +Bfree(delta MTb); +#ifndef NO_STRTOD_BIGCOMP +if (req_bigcomp) { + bd0 = 0; + bc.e0 += nz1; + bigcomp(&rv, s0, &bc MTb); + y = word0(&rv) & Exp_mask; + if (y == Exp_mask) + goto ovfl; + if (y == 0 && rv.d == 0.) + goto undfl; +} +#endif +#ifdef Avoid_Underflow +if (bc.scale) { + word0(&rv0) = Exp_1 - 2 * P * Exp_msk1; + word1(&rv0) = 0; + dval(&rv) *= dval(&rv0); +#ifndef NO_ERRNO + /* try to avoid the bug of testing an 8087 register value */ +#ifdef IEEE_Arith + if (!(word0(&rv) & Exp_mask)) +#else + if (word0(&rv) == 0 && word1(&rv) == 0) +#endif + Set_errno(ERANGE); +#endif +} +#endif /* Avoid_Underflow */ +ret: +#ifdef SET_INEXACT + if (bc.inexact) +{ + if (!(word0(&rv) & Exp_mask)) { + /* set underflow and inexact bits */ + dval(&rv0) = 1e-300; + dval(&rv0) *= dval(&rv0); + } else if (!oldinexact) { + word0(&rv0) = Exp_1 + (70 << Exp_shift); + word1(&rv0) = 0; + dval(&rv0) += 1.; + } +} +else if (!oldinexact) clear_inexact(); +#endif +if (se) + *se = (char *)s; +return sign ? -dval(&rv) : dval(&rv); +} + +#ifndef MULTIPLE_THREADS +static char *dtoa_result; +#endif + +static char *rv_alloc(int i MTd) +{ + int j, k, *r; + + j = sizeof(ULong); + for (k = 0; sizeof(Bigint) - sizeof(ULong) - sizeof(int) + j <= i; + j <<= 1) + k++; + r = (int *)Balloc(k MTa); + *r = k; + return +#ifndef MULTIPLE_THREADS + dtoa_result = +#endif + (char *)(r + 1); +} + +static char *nrv_alloc(const char *s, char *s0, size_t s0len, char **rve, + int n MTd) +{ + char *rv, *t; + + if (!s0) + s0 = rv_alloc(n MTa); + else if (s0len <= n) { + rv = 0; + t = rv + n; + goto rve_chk; + } + t = rv = s0; + while ((*t = *s++)) + ++t; +rve_chk: + if (rve) + *rve = t; + return rv; +} + +/* freedtoa(s) must be used to free values s returned by dtoa + * when MULTIPLE_THREADS is #defined. It should be used in all cases, + * but for consistency with earlier versions of dtoa, it is optional + * when MULTIPLE_THREADS is not defined. + */ + +void freedtoa(char *s) +{ +#ifdef MULTIPLE_THREADS + ThInfo *TI = 0; +#endif + Bigint *b = (Bigint *)((int *)s - 1); + b->maxwds = 1 << (b->k = *(int *)b); + Bfree(b MTb); +#ifndef MULTIPLE_THREADS + if (s == dtoa_result) + dtoa_result = 0; +#endif +} + +/* dtoa for IEEE arithmetic (dmg): convert double to ASCII string. + * + * Inspired by "How to Print Floating-Point Numbers Accurately" by + * Guy L. Steele, Jr. and Jon L. White [Proc. ACM SIGPLAN '90, pp. 112-126]. + * + * Modifications: + * 1. Rather than iterating, we use a simple numeric overestimate + * to determine k = floor(log10(d)). We scale relevant + * quantities using O(log2(k)) rather than O(k) multiplications. + * 2. For some modes > 2 (corresponding to ecvt and fcvt), we don't + * try to generate digits strictly left to right. Instead, we + * compute with fewer bits and propagate the carry if necessary + * when rounding the final digit up. This is often faster. + * 3. Under the assumption that input will be rounded nearest, + * mode 0 renders 1e23 as 1e23 rather than 9.999999999999999e22. + * That is, we allow equality in stopping tests when the + * round-nearest rule will give the same floating-point value + * as would satisfaction of the stopping test with strict + * inequality. + * 4. We remove common factors of powers of 2 from relevant + * quantities. + * 5. When converting floating-point integers less than 1e16, + * we use floating-point arithmetic rather than resorting + * to multiple-precision integers. + * 6. When asked to produce fewer than 15 digits, we first try + * to get by with floating-point arithmetic; we resort to + * multiple-precision integer arithmetic only if we cannot + * guarantee that the floating-point calculation has given + * the correctly rounded result. For k requested digits and + * "uniformly" distributed input, the probability is + * something like 10^(k-15) that we must resort to the Long + * calculation. + */ + +char *dtoa_r(double dd, int mode, int ndigits, int *decpt, int *sign, + char **rve, char *buf, size_t blen) +{ + /* Arguments ndigits, decpt, sign are similar to those + of ecvt and fcvt; trailing zeros are suppressed from + the returned string. If not null, *rve is set to point + to the end of the return value. If d is +-Infinity or NaN, + then *decpt is set to 9999. + + mode: + 0 ==> shortest string that yields d when read in + and rounded to nearest. + 1 ==> like 0, but with Steele & White stopping rule; + e.g. with IEEE P754 arithmetic , mode 0 gives + 1e23 whereas mode 1 gives 9.999999999999999e22. + 2 ==> max(1,ndigits) significant digits. This gives a + return value similar to that of ecvt, except + that trailing zeros are suppressed. + 3 ==> through ndigits past the decimal point. This + gives a return value similar to that from fcvt, + except that trailing zeros are suppressed, and + ndigits can be negative. + 4,5 ==> similar to 2 and 3, respectively, but (in + round-nearest mode) with the tests of mode 0 to + possibly return a shorter string that rounds to d. + With IEEE arithmetic and compilation with + -DHonor_FLT_ROUNDS, modes 4 and 5 behave the same + as modes 2 and 3 when FLT_ROUNDS != 1. + 6-9 ==> Debugging modes similar to mode - 4: don't try + fast floating-point estimate (if applicable). + + Values of mode other than 0-9 are treated as mode 0. + + When not NULL, buf is an output buffer of length blen, which must + be large enough to accommodate suppressed trailing zeros and a trailing + null byte. If blen is too small, rv = NULL is returned, in which case + if rve is not NULL, a subsequent call with blen >= (*rve - rv) + 1 + should succeed in returning buf. + + When buf is NULL, sufficient space is allocated for the return value, + which, when done using, the caller should pass to freedtoa(). + + USE_BF is automatically defined when neither NO_LONG_LONG nor NO_BF96 + is defined. + */ + +#ifdef MULTIPLE_THREADS + ThInfo *TI = 0; +#endif + int bbits, b2, b5, be, dig, i, ilim, ilim1, j, j1, k, leftright, m2, m5, + s2, s5, spec_case; +#if !defined(Sudden_Underflow) || defined(USE_BF96) + int denorm; +#endif + Bigint *b, *b1, *delta, *mlo, *mhi, *S; + U u; + char *s; +#ifdef SET_INEXACT + int inexact, oldinexact; +#endif +#ifdef USE_BF96 /*{{*/ + BF96 *p10; + ULLong dbhi, dbits, dblo, den, hb, rb, rblo, res, res0, res3, reslo, + sres, sulp, tv0, tv1, tv2, tv3, ulp, ulplo, ulpmask, ures, + ureslo, zb; + int eulp, k1, n2, ulpadj, ulpshift; +#else /*}{*/ +#ifndef Sudden_Underflow + ULong x; +#endif + Long L; + U d2, eps; + double ds; + int ieps, ilim0, k0, k_check, try_quick; +#ifndef No_leftright +#ifdef IEEE_Arith + U eps1; +#endif +#endif +#endif /*}}*/ +#ifdef Honor_FLT_ROUNDS /*{*/ + int Rounding; +#ifdef Trust_FLT_ROUNDS /*{{ only define this if FLT_ROUNDS really works! */ + Rounding = Flt_Rounds; +#else /*}{*/ + Rounding = 1; + switch (fegetround()) { + case FE_TOWARDZERO: + Rounding = 0; + break; + case FE_UPWARD: + Rounding = 2; + break; + case FE_DOWNWARD: + Rounding = 3; + } +#endif /*}}*/ +#endif /*}*/ + + u.d = dd; + if (word0(&u) & Sign_bit) { + /* set sign for everything, including 0's and NaNs */ + *sign = 1; + word0(&u) &= ~Sign_bit; /* clear sign bit */ + } else + *sign = 0; + +#if defined(IEEE_Arith) + defined(VAX) +#ifdef IEEE_Arith + if ((word0(&u) & Exp_mask) == Exp_mask) +#else + if (word0(&u) == 0x8000) +#endif + { + /* Infinity or NaN */ + *decpt = 9999; +#ifdef IEEE_Arith + if (!word1(&u) && !(word0(&u) & 0xfffff)) + return nrv_alloc("Infinity", buf, blen, rve, 8 MTb); +#endif + return nrv_alloc("NaN", buf, blen, rve, 3 MTb); + } +#endif +#ifdef IBM + dval(&u) += 0; /* normalize */ +#endif + if (!dval(&u)) { + *decpt = 1; + return nrv_alloc("0", buf, blen, rve, 1 MTb); + } + +#ifdef SET_INEXACT +#ifndef USE_BF96 + try_quick = +#endif + oldinexact = get_inexact(); + inexact = 1; +#endif +#ifdef Honor_FLT_ROUNDS + if (Rounding >= 2) { + if (*sign) + Rounding = Rounding == 2 ? 0 : 2; + else if (Rounding != 2) + Rounding = 0; + } +#endif +#ifdef USE_BF96 /*{{*/ + dbits = (u.LL & 0xfffffffffffffull) << 11; /* fraction bits */ + if ((be = u.LL >> 52)) /* biased exponent; nonzero ==> normal */ { + dbits |= 0x8000000000000000ull; + denorm = ulpadj = 0; + } else { + denorm = 1; + ulpadj = be + 1; + dbits <<= 1; + if (!(dbits & 0xffffffff00000000ull)) { + dbits <<= 32; + be -= 32; + } + if (!(dbits & 0xffff000000000000ull)) { + dbits <<= 16; + be -= 16; + } + if (!(dbits & 0xff00000000000000ull)) { + dbits <<= 8; + be -= 8; + } + if (!(dbits & 0xf000000000000000ull)) { + dbits <<= 4; + be -= 4; + } + if (!(dbits & 0xc000000000000000ull)) { + dbits <<= 2; + be -= 2; + } + if (!(dbits & 0x8000000000000000ull)) { + dbits <<= 1; + be -= 1; + } + assert(be >= -51); + ulpadj -= be; + } + j = Lhint[be + 51]; + p10 = &pten[j]; + dbhi = dbits >> 32; + dblo = dbits & 0xffffffffull; + i = be - 0x3fe; + if (i < p10->e || (i == p10->e && (dbhi < p10->b0 || (dbhi == p10->b0 && + dblo < p10->b1)))) + --j; + k = j - 342; + + /* now 10^k <= dd < 10^(k+1) */ + +#else /*}{*/ + + b = d2b(&u, &be, &bbits MTb); +#ifdef Sudden_Underflow + i = (int)(word0(&u) >> Exp_shift1 & (Exp_mask >> Exp_shift1)); +#else + if ((i = (int)(word0(&u) >> Exp_shift1 & + (Exp_mask >> Exp_shift1)))) { +#endif + dval(&d2) = dval(&u); + word0(&d2) &= Frac_mask1; + word0(&d2) |= Exp_11; +#ifdef IBM + if (j = 11 - hi0bits(word0(&d2) & Frac_mask)) + dval(&d2) /= 1 << j; +#endif + + /* log(x) ~=~ log(1.5) + (x-1.5)/1.5 + * log10(x) = log(x) / log(10) + * ~=~ log(1.5)/log(10) + (x-1.5)/(1.5*log(10)) + * log10(d) = (i-Bias)*log(2)/log(10) + log10(d2) + * + * This suggests computing an approximation k to log10(d) by + * + * k = (i - Bias)*0.301029995663981 + * + ( (d2-1.5)*0.289529654602168 + 0.176091259055681 ); + * + * We want k to be too large rather than too small. + * The error in the first-order Taylor series approximation + * is in our favor, so we just round up the constant enough + * to compensate for any error in the multiplication of + * (i - Bias) by 0.301029995663981; since |i - Bias| <= 1077, + * and 1077 * 0.30103 * 2^-52 ~=~ 7.2e-14, + * adding 1e-13 to the constant term more than suffices. + * Hence we adjust the constant term to 0.1760912590558. + * (We could get a more accurate k by invoking log10, + * but this is probably not worthwhile.) + */ + + i -= Bias; +#ifdef IBM + i <<= 2; + i += j; +#endif +#ifndef Sudden_Underflow + denorm = 0; + } + else + { + /* d is denormalized */ + + i = bbits + be + (Bias + (P - 1) - 1); + x = i > 32 ? word0(&u) << (64 - i) | word1(&u) >> (i - 32) : + word1(&u) << (32 - i); + dval(&d2) = x; + word0(&d2) -= 31 * Exp_msk1; /* adjust exponent */ + i -= (Bias + (P - 1) - 1) + 1; + denorm = 1; + } +#endif + ds = (dval(&d2) - 1.5) * 0.289529654602168 + 0.1760912590558 + + i * 0.301029995663981; + k = (int)ds; + if (ds < 0. && ds != k) + k--; /* want k = floor(ds) */ + k_check = 1; + if (k >= 0 && k <= Ten_pmax) { + if (dval(&u) < tens[k]) + k--; + k_check = 0; + } + j = bbits - i - 1; + if (j >= 0) { + b2 = 0; + s2 = j; + } else { + b2 = -j; + s2 = 0; + } + if (k >= 0) { + b5 = 0; + s5 = k; + s2 += k; + } else { + b2 -= k; + b5 = -k; + s5 = 0; + } +#endif /*}}*/ + if (mode < 0 || mode > 9) + mode = 0; + +#ifndef USE_BF96 +#ifndef SET_INEXACT +#ifdef Check_FLT_ROUNDS + try_quick = Rounding == 1; +#else + try_quick = 1; +#endif +#endif /*SET_INEXACT*/ +#endif /*USE_BF96*/ + + if (mode > 5) { + mode -= 4; +#ifndef USE_BF96 + try_quick = 0; +#endif + } + leftright = 1; + ilim = ilim1 = -1; /* Values for cases 0 and 1; done here to */ + /* silence erroneous "gcc -Wall" warning. */ + switch (mode) { + case 0: + case 1: + i = 18; + ndigits = 0; + break; + case 2: + leftright = 0; + /* no break */ + case 4: + if (ndigits <= 0) + ndigits = 1; + ilim = ilim1 = i = ndigits; + break; + case 3: + leftright = 0; + /* no break */ + case 5: + i = ndigits + k + 1; + ilim = i; + ilim1 = i - 1; + if (i <= 0) + i = 1; + } + if (!buf) { + buf = rv_alloc(i MTb); + blen = sizeof(Bigint) + + ((1 << ((int *)buf)[-1]) - 1) * sizeof(ULong) - + sizeof(int); + } else if (blen <= i) { + buf = 0; + if (rve) + *rve = buf + i; + return buf; + } + s = buf; + + /* Check for special case that d is a normalized power of 2. */ + + spec_case = 0; + if (mode < 2 || (leftright +#ifdef Honor_FLT_ROUNDS + && Rounding == 1 +#endif + )) { + if (!word1(&u) && !(word0(&u) & Bndry_mask) +#ifndef Sudden_Underflow + && word0(&u) & (Exp_mask & ~Exp_msk1) +#endif + ) { + /* The special case */ + spec_case = 1; + } + } + +#ifdef USE_BF96 /*{*/ + b = 0; + if (ilim < 0 && (mode == 3 || mode == 5)) { + S = mhi = 0; + goto no_digits; + } + i = 1; + j = 52 + 0x3ff - be; + ulpshift = 0; + ulplo = 0; + /* Can we do an exact computation with 64-bit integer arithmetic? */ + if (k < 0) { + if (k < -25) + goto toobig; + res = dbits >> 11; + n2 = pfivebits[k1 = -(k + 1)] + 53; + j1 = j; + if (n2 > 61) { + ulpshift = n2 - 61; + if (res & (ulpmask = (1ull << ulpshift) - 1)) + goto toobig; + j -= ulpshift; + res >>= ulpshift; + } + /* Yes. */ + res *= ulp = pfive[k1]; + if (ulpshift) { + ulplo = ulp; + ulp >>= ulpshift; + } + j += k; + if (ilim == 0) { + S = mhi = 0; + if (res > (5ull << j)) + goto one_digit; + goto no_digits; + } + goto no_div; + } + if (ilim == 0 && j + k >= 0) { + S = mhi = 0; + if ((dbits >> 11) > (pfive[k - 1] << j)) + goto one_digit; + goto no_digits; + } + if (k <= dtoa_divmax && j + k >= 0) { + /* Another "yes" case -- we will use exact integer arithmetic. + */ +use_exact: + Debug(++dtoa_stats[3]); + res = dbits >> 11; /* residual */ + ulp = 1; + if (k <= 0) + goto no_div; + j1 = j + k + 1; + den = pfive[k - i] << (j1 - i); + for (;;) { + dig = res / den; + *s++ = '0' + dig; + if (!(res -= dig * den)) { +#ifdef SET_INEXACT + inexact = 0; + oldinexact = 1; +#endif + goto retc; + } + if (ilim < 0) { + ures = den - res; + if (2 * res <= ulp && + (spec_case ? 4 * res <= ulp : + (2 * res < ulp || dig & 1))) + goto ulp_reached; + if (2 * ures < ulp) + goto Roundup; + } else if (i == ilim) { + switch (Rounding) { + case 0: + goto retc; + case 2: + goto Roundup; + } + ures = 2 * res; + if (ures > den || (ures == den && dig & 1) || + (spec_case && res <= ulp && 2 * res >= ulp)) + goto Roundup; + goto retc; + } + if (j1 < ++i) { + res *= 10; + ulp *= 10; + } else { + if (i > k) + break; + den = pfive[k - i] << (j1 - i); + } + } +no_div: + for (;;) { + dig = den = res >> j; + *s++ = '0' + dig; + if (!(res -= den << j)) { +#ifdef SET_INEXACT + inexact = 0; + oldinexact = 1; +#endif + goto retc; + } + if (ilim < 0) { + ures = (1ull << j) - res; + if (2 * res <= ulp && + (spec_case ? 4 * res <= ulp : + (2 * res < ulp || dig & 1))) { +ulp_reached: + if (ures < res || + (ures == res && dig & 1) || + (dig == 9 && 2 * ures <= ulp)) + goto Roundup; + goto retc; + } + if (2 * ures < ulp) + goto Roundup; + } + --j; + if (i == ilim) { +#ifdef Honor_FLT_ROUNDS + switch (Rounding) { + case 0: + goto retc; + case 2: + goto Roundup; + } +#endif + hb = 1ull << j; + if (res & hb && (dig & 1 || res & (hb - 1))) + goto Roundup; + if (spec_case && res <= ulp && 2 * res >= ulp) { +Roundup: + while (*--s == '9') + if (s == buf) { + ++k; + *s++ = '1'; + goto ret1; + } + ++*s++; + goto ret1; + } + goto retc; + } + ++i; + res *= 5; + if (ulpshift) { + ulplo = 5 * (ulplo & ulpmask); + ulp = 5 * ulp + (ulplo >> ulpshift); + } else + ulp *= 5; + } + } +toobig: + if (ilim > 28) + goto Fast_failed1; + /* Scale by 10^-k */ + p10 = &pten[342 - k]; + tv0 = p10->b2 * dblo; /* rarely matters, but does, e.g., + for 9.862818194192001e18 */ + tv1 = p10->b1 * dblo + (tv0 >> 32); + tv2 = p10->b2 * dbhi + (tv1 & 0xffffffffull); + tv3 = p10->b0 * dblo + (tv1 >> 32) + (tv2 >> 32); + res3 = p10->b1 * dbhi + (tv3 & 0xffffffffull); + res = p10->b0 * dbhi + (tv3 >> 32) + (res3 >> 32); + be += p10->e - 0x3fe; + eulp = j1 = be - 54 + ulpadj; + if (!(res & 0x8000000000000000ull)) { + --be; + res3 <<= 1; + res = (res << 1) | ((res3 & 0x100000000ull) >> 32); + } + res0 = res; /* save for Fast_failed */ +#if !defined(SET_INEXACT) && !defined(NO_DTOA_64) /*{*/ + if (ilim > 19) + goto Fast_failed; + Debug(++dtoa_stats[4]); + assert(be >= 0 && be <= 4); /* be = 0 is rare, but possible, e.g., for + 1e20 */ + res >>= 4 - be; + ulp = p10->b0; /* ulp */ + ulp = (ulp << 29) | (p10->b1 >> 3); + /* scaled ulp = ulp * 2^(eulp - 60) */ + /* We maintain 61 bits of the scaled ulp. */ + if (ilim == 0) { + if (!(res & 0x7fffffffffffffeull) || + !((~res) & 0x7fffffffffffffeull)) + goto Fast_failed1; + S = mhi = 0; + if (res >= 0x5000000000000000ull) + goto one_digit; + goto no_digits; + } + rb = 1; /* upper bound on rounding error */ + for (;; ++i) { + dig = res >> 60; + *s++ = '0' + dig; + res &= 0xfffffffffffffffull; + if (ilim < 0) { + ures = 0x1000000000000000ull - res; + if (eulp > 0) { + assert(eulp <= 4); + sulp = ulp << (eulp - 1); + if (res <= ures) { + if (res + rb > ures - rb) + goto Fast_failed; + if (res < sulp) + goto retc; + } else { + if (res - rb <= ures + rb) + goto Fast_failed; + if (ures < sulp) + goto Roundup; + } + } else { + zb = -(1ull << (eulp + 63)); + if (!(zb & res)) { + sres = res << (1 - eulp); + if (sres < ulp && + (!spec_case || 2 * sres < ulp)) { + if ((res + rb) << (1 - eulp) >= + ulp) + goto Fast_failed; + if (ures < res) { + if (ures + rb >= + res - rb) + goto Fast_failed; + goto Roundup; + } + if (ures - rb < res + rb) + goto Fast_failed; + goto retc; + } + } + if (!(zb & ures) && ures << -eulp < ulp) { + if (ures << (1 - eulp) < ulp) + goto Roundup; + goto Fast_failed; + } + } + } else if (i == ilim) { + ures = 0x1000000000000000ull - res; + if (ures < res) { + if (ures <= rb || res - rb <= ures + rb) { + if (j + k >= 0 && k >= 0 && k <= 27) + goto use_exact1; + goto Fast_failed; + } +#ifdef Honor_FLT_ROUNDS + if (Rounding == 0) + goto retc; +#endif + goto Roundup; + } + if (res <= rb || ures - rb <= res + rb) { + if (j + k >= 0 && k >= 0 && k <= 27) { +use_exact1: + s = buf; + i = 1; + goto use_exact; + } + goto Fast_failed; + } +#ifdef Honor_FLT_ROUNDS + if (Rounding == 2) + goto Roundup; +#endif + goto retc; + } + rb *= 10; + if (rb >= 0x1000000000000000ull) + goto Fast_failed; + res *= 10; + ulp *= 5; + if (ulp & 0x8000000000000000ull) { + eulp += 4; + ulp >>= 3; + } else { + eulp += 3; + ulp >>= 2; + } + } +#endif /*}*/ +#ifndef NO_BF96 +Fast_failed: +#endif + Debug(++dtoa_stats[5]); + s = buf; + i = 4 - be; + res = res0 >> i; + reslo = 0xffffffffull & res3; + if (i) + reslo = (res0 << (64 - i)) >> 32 | (reslo >> i); + rb = 0; + rblo = 4; /* roundoff bound */ + ulp = p10->b0; /* ulp */ + ulp = (ulp << 29) | (p10->b1 >> 3); + eulp = j1; + for (i = 1;; ++i) { + dig = res >> 60; + *s++ = '0' + dig; + res &= 0xfffffffffffffffull; +#ifdef SET_INEXACT + if (!res && !reslo) { + if (!(res3 & 0xffffffffull)) { + inexact = 0; + oldinexact = 1; + } + goto retc; + } +#endif + if (ilim < 0) { + ures = 0x1000000000000000ull - res; + ureslo = 0; + if (reslo) { + ureslo = 0x100000000ull - reslo; + --ures; + } + if (eulp > 0) { + assert(eulp <= 4); + sulp = (ulp << (eulp - 1)) - rb; + if (res <= ures) { + if (res < sulp) { + if (res + rb < ures - rb) + goto retc; + } + } else if (ures < sulp) { + if (res - rb > ures + rb) + goto Roundup; + } + goto Fast_failed1; + } else { + zb = -(1ull << (eulp + 60)); + if (!(zb & (res + rb))) { + sres = (res - rb) << (1 - eulp); + if (sres < ulp && + (!spec_case || 2 * sres < ulp)) { + sres = res << (1 - eulp); + if ((j = eulp + 31) > 0) + sres += (rblo + + reslo) >> + j; + else + sres += (rblo + reslo) + << -j; + if (sres + (rb << (1 - eulp)) >= + ulp) + goto Fast_failed1; + if (sres >= ulp) + goto more96; + if (ures < res || + (ures == res && + ureslo < reslo)) { + if (ures + rb >= + res - rb) + goto Fast_failed1; + goto Roundup; + } + if (ures - rb <= res + rb) + goto Fast_failed1; + goto retc; + } + } + if (!(zb & ures) && + (ures - rb) << (1 - eulp) < ulp) { + if ((ures + rb) << (2 - eulp) < ulp) + goto Roundup; + goto Fast_failed1; + } + } + } else if (i == ilim) { + ures = 0x1000000000000000ull - res; + sres = ureslo = 0; + if (reslo) { + ureslo = 0x100000000ull - reslo; + --ures; + sres = (reslo + rblo) >> 31; + } + sres += 2 * rb; + if (ures <= res) { + if (ures <= sres || res - ures <= sres) + goto Fast_failed1; +#ifdef Honor_FLT_ROUNDS + if (Rounding == 0) + goto retc; +#endif + goto Roundup; + } + if (res <= sres || ures - res <= sres) + goto Fast_failed1; +#ifdef Honor_FLT_ROUNDS + if (Rounding == 2) + goto Roundup; +#endif + goto retc; + } +more96: + rblo *= 10; + rb = 10 * rb + (rblo >> 32); + rblo &= 0xffffffffull; + if (rb >= 0x1000000000000000ull) + goto Fast_failed1; + reslo *= 10; + res = 10 * res + (reslo >> 32); + reslo &= 0xffffffffull; + ulp *= 5; + if (ulp & 0x8000000000000000ull) { + eulp += 4; + ulp >>= 3; + } else { + eulp += 3; + ulp >>= 2; + } + } +Fast_failed1: + Debug(++dtoa_stats[6]); + S = mhi = mlo = 0; +#ifdef USE_BF96 + b = d2b(&u, &be, &bbits MTb); +#endif + s = buf; + i = (int)(word0(&u) >> Exp_shift1 & (Exp_mask >> Exp_shift1)); + i -= Bias; + if (ulpadj) + i -= ulpadj - 1; + j = bbits - i - 1; + if (j >= 0) { + b2 = 0; + s2 = j; + } else { + b2 = -j; + s2 = 0; + } + if (k >= 0) { + b5 = 0; + s5 = k; + s2 += k; + } else { + b2 -= k; + b5 = -k; + s5 = 0; + } +#endif /*}*/ + +#ifdef Honor_FLT_ROUNDS + if (mode > 1 && Rounding != 1) + leftright = 0; +#endif + +#ifndef USE_BF96 /*{*/ + if (ilim >= 0 && ilim <= Quick_max && try_quick) { + /* Try to get by with floating-point arithmetic. */ + + i = 0; + dval(&d2) = dval(&u); + j1 = -(k0 = k); + ilim0 = ilim; + ieps = 2; /* conservative */ + if (k > 0) { + ds = tens[k & 0xf]; + j = k >> 4; + if (j & Bletch) { + /* prevent overflows */ + j &= Bletch - 1; + dval(&u) /= bigtens[n_bigtens - 1]; + ieps++; + } + for (; j; j >>= 1, i++) + if (j & 1) { + ieps++; + ds *= bigtens[i]; + } + dval(&u) /= ds; + } else if (j1 > 0) { + dval(&u) *= tens[j1 & 0xf]; + for (j = j1 >> 4; j; j >>= 1, i++) + if (j & 1) { + ieps++; + dval(&u) *= bigtens[i]; + } + } + if (k_check && dval(&u) < 1. && ilim > 0) { + if (ilim1 <= 0) + goto fast_failed; + ilim = ilim1; + k--; + dval(&u) *= 10.; + ieps++; + } + dval(&eps) = ieps * dval(&u) + 7.; + word0(&eps) -= (P - 1) * Exp_msk1; + if (ilim == 0) { + S = mhi = 0; + dval(&u) -= 5.; + if (dval(&u) > dval(&eps)) + goto one_digit; + if (dval(&u) < -dval(&eps)) + goto no_digits; + goto fast_failed; + } +#ifndef No_leftright + if (leftright) { + /* Use Steele & White method of only + * generating digits needed. + */ + dval(&eps) = 0.5 / tens[ilim - 1] - dval(&eps); +#ifdef IEEE_Arith + if (j1 >= 307) { + eps1.d = 1.01e256; /* 1.01 allows roundoff in + the next few lines */ + word0(&eps1) -= Exp_msk1 * (Bias + P - 1); + dval(&eps1) *= tens[j1 & 0xf]; + for (i = 0, j = (j1 - 256) >> 4; j; + j >>= 1, i++) + if (j & 1) + dval(&eps1) *= bigtens[i]; + if (eps.d < eps1.d) + eps.d = eps1.d; + if (10. - u.d < 10. * eps.d && eps.d < 1.) { + /* eps.d < 1. excludes trouble with the + * tiniest denormal */ + *s++ = '1'; + ++k; + goto ret1; + } + } +#endif + for (i = 0;;) { + L = dval(&u); + dval(&u) -= L; + *s++ = '0' + (int)L; + if (1. - dval(&u) < dval(&eps)) + goto bump_up; + if (dval(&u) < dval(&eps)) + goto retc; + if (++i >= ilim) + break; + dval(&eps) *= 10.; + dval(&u) *= 10.; + } + } else { +#endif + /* Generate ilim digits, then fix them up. */ + dval(&eps) *= tens[ilim - 1]; + for (i = 1;; i++, dval(&u) *= 10.) { + L = (Long)(dval(&u)); + if (!(dval(&u) -= L)) + ilim = i; + *s++ = '0' + (int)L; + if (i == ilim) { + if (dval(&u) > 0.5 + dval(&eps)) + goto bump_up; + else if (dval(&u) < 0.5 - dval(&eps)) + goto retc; + break; + } + } +#ifndef No_leftright + } +#endif +fast_failed: + s = buf; + dval(&u) = dval(&d2); + k = k0; + ilim = ilim0; + } + + /* Do we have a "small" integer? */ + + if (be >= 0 && k <= Int_max) { + /* Yes. */ + ds = tens[k]; + if (ndigits < 0 && ilim <= 0) { + S = mhi = 0; + if (ilim < 0 || dval(&u) <= 5 * ds) + goto no_digits; + goto one_digit; + } + for (i = 1;; i++, dval(&u) *= 10.) { + L = (Long)(dval(&u) / ds); + dval(&u) -= L * ds; +#ifdef Check_FLT_ROUNDS + /* If FLT_ROUNDS == 2, L will usually be high by 1 */ + if (dval(&u) < 0) { + L--; + dval(&u) += ds; + } +#endif + *s++ = '0' + (int)L; + if (!dval(&u)) { +#ifdef SET_INEXACT + inexact = 0; +#endif + break; + } + if (i == ilim) { +#ifdef Honor_FLT_ROUNDS + if (mode > 1) + switch (Rounding) { + case 0: + goto retc; + case 2: + goto bump_up; + } +#endif + dval(&u) += dval(&u); +#ifdef ROUND_BIASED + if (dval(&u) >= ds) +#else + if (dval(&u) > ds || (dval(&u) == ds && L & 1)) +#endif + { +bump_up: + while (*--s == '9') + if (s == buf) { + k++; + *s = '0'; + break; + } + ++*s++; + } + break; + } + } + goto retc; + } + +#endif /*}*/ + m2 = b2; + m5 = b5; + mhi = mlo = 0; + if (leftright) { + i = +#ifndef Sudden_Underflow + denorm ? be + (Bias + (P - 1) - 1 + 1) : +#endif +#ifdef IBM + 1 + 4 * P - 3 - bbits + ((bbits + be - 1) & 3); +#else + 1 + P - bbits; +#endif + b2 += i; + s2 += i; + mhi = i2b(1 MTb); + } + if (m2 > 0 && s2 > 0) { + i = m2 < s2 ? m2 : s2; + b2 -= i; + m2 -= i; + s2 -= i; + } + if (b5 > 0) { + if (leftright) { + if (m5 > 0) { + mhi = pow5mult(mhi, m5 MTb); + b1 = mult(mhi, b MTb); + Bfree(b MTb); + b = b1; + } + if ((j = b5 - m5)) + b = pow5mult(b, j MTb); + } else + b = pow5mult(b, b5 MTb); + } + S = i2b(1 MTb); + if (s5 > 0) + S = pow5mult(S, s5 MTb); + + if (spec_case) { + b2 += Log2P; + s2 += Log2P; + } + + /* Arrange for convenient computation of quotients: + * shift left if necessary so divisor has 4 leading 0 bits. + * + * Perhaps we should just compute leading 28 bits of S once + * and for all and pass them and a shift to quorem, so it + * can do shifts and ors to compute the numerator for q. + */ + i = dshift(S, s2); + b2 += i; + m2 += i; + s2 += i; + if (b2 > 0) + b = lshift(b, b2 MTb); + if (s2 > 0) + S = lshift(S, s2 MTb); +#ifndef USE_BF96 + if (k_check) { + if (cmp(b, S) < 0) { + k--; + b = multadd(b, 10, 0 MTb); /* we botched the k estimate + */ + if (leftright) + mhi = multadd(mhi, 10, 0 MTb); + ilim = ilim1; + } + } +#endif + if (ilim <= 0 && (mode == 3 || mode == 5)) { + if (ilim < 0 || cmp(b, S = multadd(S, 5, 0 MTb)) <= 0) { + /* no digits, fcvt style */ +no_digits: + k = -1 - ndigits; + goto ret; + } +one_digit: + *s++ = '1'; + ++k; + goto ret; + } + if (leftright) { + if (m2 > 0) + mhi = lshift(mhi, m2 MTb); + + /* Compute mlo -- check for special case + * that d is a normalized power of 2. + */ + + mlo = mhi; + if (spec_case) { + mhi = Balloc(mhi->k MTb); + Bcopy(mhi, mlo); + mhi = lshift(mhi, Log2P MTb); + } + + for (i = 1;; i++) { + dig = quorem(b, S) + '0'; + /* Do we yet have the shortest decimal string + * that will round to d? + */ + j = cmp(b, mlo); + delta = diff(S, mhi MTb); + j1 = delta->sign ? 1 : cmp(b, delta); + Bfree(delta MTb); +#ifndef ROUND_BIASED + if (j1 == 0 && mode != 1 && !(word1(&u) & 1) +#ifdef Honor_FLT_ROUNDS + && (mode <= 1 || Rounding >= 1) +#endif + ) { + if (dig == '9') + goto round_9_up; + if (j > 0) + dig++; +#ifdef SET_INEXACT + else if (!b->x[0] && b->wds <= 1) + inexact = 0; +#endif + *s++ = dig; + goto ret; + } +#endif + if (j < 0 || (j == 0 && mode != 1 +#ifndef ROUND_BIASED + && !(word1(&u) & 1) +#endif + )) { + if (!b->x[0] && b->wds <= 1) { +#ifdef SET_INEXACT + inexact = 0; +#endif + goto accept_dig; + } +#ifdef Honor_FLT_ROUNDS + if (mode > 1) + switch (Rounding) { + case 0: + goto accept_dig; + case 2: + goto keep_dig; + } +#endif /*Honor_FLT_ROUNDS*/ + if (j1 > 0) { + b = lshift(b, 1 MTb); + j1 = cmp(b, S); +#ifdef ROUND_BIASED + if (j1 >= 0 /*)*/ +#else + if ((j1 > 0 || (j1 == 0 && dig & 1)) +#endif + && dig++ == '9') + goto round_9_up; + } +accept_dig: + *s++ = dig; + goto ret; + } + if (j1 > 0) { +#ifdef Honor_FLT_ROUNDS + if (!Rounding && mode > 1) + goto accept_dig; +#endif + if (dig == '9') { /* possible if i == 1 */ +round_9_up: + *s++ = '9'; + goto roundoff; + } + *s++ = dig + 1; + goto ret; + } +#ifdef Honor_FLT_ROUNDS +keep_dig: +#endif + *s++ = dig; + if (i == ilim) + break; + b = multadd(b, 10, 0 MTb); + if (mlo == mhi) + mlo = mhi = multadd(mhi, 10, 0 MTb); + else { + mlo = multadd(mlo, 10, 0 MTb); + mhi = multadd(mhi, 10, 0 MTb); + } + } + } else + for (i = 1;; i++) { + dig = quorem(b, S) + '0'; + *s++ = dig; + if (!b->x[0] && b->wds <= 1) { +#ifdef SET_INEXACT + inexact = 0; +#endif + goto ret; + } + if (i >= ilim) + break; + b = multadd(b, 10, 0 MTb); + } + + /* Round off last digit */ + +#ifdef Honor_FLT_ROUNDS + if (mode > 1) + switch (Rounding) { + case 0: + goto ret; + case 2: + goto roundoff; + } +#endif + b = lshift(b, 1 MTb); + j = cmp(b, S); +#ifdef ROUND_BIASED + if (j >= 0) +#else + if (j > 0 || (j == 0 && dig & 1)) +#endif + { +roundoff: + while (*--s == '9') + if (s == buf) { + k++; + *s++ = '1'; + goto ret; + } + ++*s++; + } +ret: + Bfree(S MTb); + if (mhi) { + if (mlo && mlo != mhi) + Bfree(mlo MTb); + Bfree(mhi MTb); + } +retc: + while (s > buf && s[-1] == '0') + --s; +ret1: + if (b) + Bfree(b MTb); + *s = 0; + *decpt = k + 1; + if (rve) + *rve = s; +#ifdef SET_INEXACT + if (inexact) { + if (!oldinexact) { + word0(&u) = Exp_1 + (70 << Exp_shift); + word1(&u) = 0; + dval(&u) += 1.; + } + } else if (!oldinexact) + clear_inexact(); +#endif + return buf; +} + +char *dtoa(double dd, int mode, int ndigits, int *decpt, int *sign, char **rve) +{ + /* Sufficient space is allocated to the return value + to hold the suppressed trailing zeros. + See dtoa_r() above for details on the other arguments. + */ +#ifndef MULTIPLE_THREADS + if (dtoa_result) + freedtoa(dtoa_result); +#endif + return dtoa_r(dd, mode, ndigits, decpt, sign, rve, 0, 0); +} + +#ifdef __cplusplus +} +#endif diff --git a/lib/libc/stdio/fclose.c b/lib/libc/stdio/fclose.c new file mode 100644 index 00000000..8f0b4cef --- /dev/null +++ b/lib/libc/stdio/fclose.c @@ -0,0 +1,16 @@ +#include <io.h> +#include <stdio.h> +#include <unistd.h> + +int fclose(FILE *stream) +{ + if (fflush(stream) == -1) + return -1; + + if (stream != stdin && stream != stdout && stream != stderr) { + if (close(stream->fd) == -1) + return -1; + } + + return 0; +} diff --git a/lib/libc/stdio/fdopen.c b/lib/libc/stdio/fdopen.c new file mode 100644 index 00000000..f2ce0693 --- /dev/null +++ b/lib/libc/stdio/fdopen.c @@ -0,0 +1,39 @@ +#include <io.h> +#include <libc.h> +#include <unistd.h> +#include <stdio.h> + +weak void __stdio_cleanup(void) +{ +} + +FILE *fdopen(int fildes, const char *mode) +{ + FILE *fp; + + if (mode == NULL || + (mode[0] != 'r' && mode[0] != 'w' && mode[0] != 'a')) { + return NULL; + } + + if ((fp = calloc(1, sizeof(FILE))) == NULL) + return NULL; + + fp->fd = fildes; + atomic_flag_clear(&fp->lock); + if (mode[0] == 'r') { + fp->type = _IONBF; + } else if (mode[0] == 'w') { + fp->type = _IOLBF; + } else if (mode[0] == 'a') { + fp->type = _IONBF; + off_t offset = lseek(fildes, 0, SEEK_END); + if (offset == (off_t)-1) { + free(fp); + return NULL; + } + } + + __libc_fadd(fp); + return fp; +} diff --git a/lib/libc/stdio/feof.c b/lib/libc/stdio/feof.c new file mode 100644 index 00000000..0b3eb1ec --- /dev/null +++ b/lib/libc/stdio/feof.c @@ -0,0 +1,10 @@ +#include <stdio.h> +#include <io.h> + +int feof(FILE *stream) +{ + if (!stream) + return 0; + + return stream->eof; +} diff --git a/lib/libc/stdio/ferror.c b/lib/libc/stdio/ferror.c new file mode 100644 index 00000000..b4e438b3 --- /dev/null +++ b/lib/libc/stdio/ferror.c @@ -0,0 +1,10 @@ +#include <stdio.h> +#include <io.h> + +int ferror(FILE *stream) +{ + if (!stream) + return 0; + + return (stream->flags & _IO_ERR) != 0; +} diff --git a/lib/libc/stdio/fflush.c b/lib/libc/stdio/fflush.c new file mode 100644 index 00000000..f9a2004d --- /dev/null +++ b/lib/libc/stdio/fflush.c @@ -0,0 +1,84 @@ +#include <stdio.h> +#include <unistd.h> +#include <atomic.h> +#include <io.h> +#include <errno.h> +#include <string.h> + +int fflush(FILE *stream) +{ + // Handle NULL stream - flush all open streams + if (stream == NULL) { + // TODO: Implement flushing all open streams + // For now, just return success + return 0; + } + + // Nothing to flush if buffer is empty + if (stream->buf_len == 0) { + return 0; + } + + // Handle special case of invalid file descriptor + if (stream->fd == -1) { + stream->buf_len = 0; + return 0; + } + + // Check if stream is in error state + if (stream->flags & _IO_ERR) { + errno = EIO; + return EOF; + } + + // Check if stream is writable + if ((stream->flags & O_ACCMODE) == O_RDONLY) { + errno = EBADF; + return EOF; + } + + LIBC_LOCK(stream->lock); + + size_t bytes_to_write = stream->buf_len; + size_t total_written = 0; + char *buf_ptr = stream->buf; + + // Write all buffered data + while (total_written < bytes_to_write) { + ssize_t result = write(stream->fd, buf_ptr + total_written, + bytes_to_write - total_written); + + if (result < 0) { + // Write error occurred + stream->flags |= _IO_ERR; + LIBC_UNLOCK(stream->lock); + return EOF; + } + + if (result == 0) { + // No progress made (shouldn't happen with regular + // files) + break; + } + + total_written += result; + } + + // Update buffer state + if (total_written == bytes_to_write) { + // All data was written successfully + stream->buf_len = 0; + stream->buf_pos = 0; + } else { + // Partial write - move remaining data to beginning of buffer + size_t remaining = bytes_to_write - total_written; + memmove(stream->buf, stream->buf + total_written, remaining); + stream->buf_len = remaining; + stream->buf_pos = 0; + } + + LIBC_UNLOCK(stream->lock); + + // Return success if all data was written, error otherwise + return (total_written == bytes_to_write) ? 0 : EOF; +} diff --git a/lib/libc/stdio/fgetc.c b/lib/libc/stdio/fgetc.c new file mode 100644 index 00000000..658eaffe --- /dev/null +++ b/lib/libc/stdio/fgetc.c @@ -0,0 +1,11 @@ +#include <stdio.h> + +int fgetc(FILE *stream) +{ + int c; + + if (fread(&c, 1, 1, stream) < 0) + return -1; + + return c; +} diff --git a/lib/libc/stdio/fgets.c b/lib/libc/stdio/fgets.c new file mode 100644 index 00000000..75ffb064 --- /dev/null +++ b/lib/libc/stdio/fgets.c @@ -0,0 +1,9 @@ +#include <libc.h> +#include <stdio.h> + +char *fgets(char *restrict s, int n, FILE *restrict stream) +{ + return fread(s, 1, n, stream) ? s : NULL; +} + +weak_reference(fgets, fgets_unlocked); diff --git a/lib/libc/stdio/fileno.c b/lib/libc/stdio/fileno.c new file mode 100644 index 00000000..09db0ad5 --- /dev/null +++ b/lib/libc/stdio/fileno.c @@ -0,0 +1,20 @@ +#include <io.h> +#include <errno.h> +#include <atomic.h> +#include <stdio.h> + +int fileno(FILE *stream) +{ + int fd; + + LIBC_LOCK(stream->lock); + fd = stream->fd; + LIBC_UNLOCK(stream->lock); + + if (fd < 0) { + errno = EBADF; + return -1; + } + + return fd; +} diff --git a/lib/libc/stdio/fmemopen.c b/lib/libc/stdio/fmemopen.c new file mode 100644 index 00000000..1ad86f7b --- /dev/null +++ b/lib/libc/stdio/fmemopen.c @@ -0,0 +1,46 @@ +#include <io.h> +#include <errno.h> +#include <fcntl.h> +#include <stdlib.h> +#include <string.h> +#include <stdio.h> +#include <libc.h> + +weak void __stdio_cleanup(void) +{ +} + +FILE *fmemopen(void *restrict buf, size_t max_size, const char *restrict mode) +{ + int flags; + FILE *f = calloc(1, sizeof(FILE)); + + if (f == NULL) + return f; + + f->fd = -1; + f->buf = buf; + f->buf_size = max_size; + f->type = _IOFBF; + + if (mode[0] == 'r') { + flags = O_RDONLY; + } else if (mode[0] == 'w') { + flags = O_WRONLY | O_CREAT | O_TRUNC; + } else if (mode[0] == 'a') { + flags = O_WRONLY | O_CREAT | O_APPEND; + } else { + errno = EINVAL; + return NULL; + } + + if (strchr(mode, '+')) { + flags = (flags & ~(O_RDONLY | O_WRONLY)) | O_RDWR; + } + + f->flags = flags; + + __libc_fadd(f); + + return f; +} diff --git a/lib/libc/stdio/fopen.c b/lib/libc/stdio/fopen.c new file mode 100644 index 00000000..7d01fd38 --- /dev/null +++ b/lib/libc/stdio/fopen.c @@ -0,0 +1,56 @@ +#include <io.h> +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <unistd.h> +#include <stdlib.h> +#include <string.h> +#include <libc.h> + +weak void __stdio_cleanup(void) +{ +} + +FILE *fopen(const char *restrict pathname, const char *restrict mode) +{ + int fd, flags, _mode; + FILE *fp; + + _mode = 0; + if (mode[0] == 'r') { + flags = O_RDONLY; + } else if (mode[0] == 'w') { + flags = O_WRONLY | O_CREAT | O_TRUNC; + } else if (mode[0] == 'a') { + flags = O_WRONLY | O_CREAT | O_APPEND; + _mode = 0666; + } else { + errno = EINVAL; + return NULL; + } + + if (strchr(mode, '+')) { + flags = (flags & ~(O_RDONLY | O_WRONLY)) | O_RDWR; + } + + if ((fd = open(pathname, flags, _mode)) < 0) + return NULL; + + if ((fp = calloc(1, sizeof(FILE))) == NULL) + return NULL; + + fp->fd = fd; + fp->buf_size = BUFSIZ; + fp->flags = flags; + fp->type = _IOLBF; + atomic_flag_clear(&fp->lock); + if ((fp->buf = malloc(BUFSIZ)) == NULL) { + close(fd); + free(fp); + return NULL; + } + + __libc_fadd(fp); + + return fp; +} diff --git a/lib/libc/stdio/fprintf.c b/lib/libc/stdio/fprintf.c new file mode 100644 index 00000000..4283b424 --- /dev/null +++ b/lib/libc/stdio/fprintf.c @@ -0,0 +1,12 @@ +#include <stdio.h> +#include <stdarg.h> + +int fprintf(FILE *restrict stream, const char *restrict format, ...) +{ + int r; + va_list ap; + va_start(ap, format); + r = vfprintf(stdout, format, ap); + va_end(ap); + return r; +} diff --git a/lib/libc/stdio/fputc.c b/lib/libc/stdio/fputc.c new file mode 100644 index 00000000..c544d5dd --- /dev/null +++ b/lib/libc/stdio/fputc.c @@ -0,0 +1,27 @@ +#include <stdio.h> +#include <errno.h> +#include <string.h> +#include <io.h> + +int fputc(int c, FILE *stream) +{ + if (!stream) { + errno = EINVAL; + return EOF; + } + + // Special case for string buffer operations (snprintf) + // When fd is -1, we're writing to a string buffer + if (stream->fd == -1 && stream->buf != NULL) { + // Check if there's space (leave room for null terminator) + if (stream->buf_len >= stream->buf_size - 1) { + return EOF; + } + + stream->buf[stream->buf_len++] = (char)c; + return (unsigned char)c; + } + + // For regular file operations, use fwrite + return fwrite(&c, 1, 1, stream) ? c : EOF; +} diff --git a/lib/libc/stdio/fputs.c b/lib/libc/stdio/fputs.c new file mode 100644 index 00000000..8538b9c2 --- /dev/null +++ b/lib/libc/stdio/fputs.c @@ -0,0 +1,7 @@ +#include <stdio.h> +#include <string.h> + +int fputs(const char *restrict s, FILE *restrict stream) +{ + return fwrite(s, 1, strlen(s), stream) == strlen(s) ? 0 : EOF; +} diff --git a/lib/libc/stdio/fread.c b/lib/libc/stdio/fread.c new file mode 100644 index 00000000..a27b64c4 --- /dev/null +++ b/lib/libc/stdio/fread.c @@ -0,0 +1,50 @@ +#include <io.h> +#include <unistd.h> +#include <string.h> +#include <atomic.h> +#include <stdio.h> + +char __stdin_buffer[BUFSIZ]; + +size_t fread(void *restrict ptr, size_t size, size_t nitems, + FILE *restrict stream) +{ + if (size == 0 || nitems == 0) + return 0; + + size_t total = size * nitems; + size_t bytes_read = 0; + char *p = ptr; + + LIBC_LOCK(stream->lock); + + while (total > 0) { + if (stream->buf_pos < stream->buf_len) { + size_t available = stream->buf_len - stream->buf_pos; + size_t to_copy = total < available ? total : available; + + memcpy(p, stream->buf + stream->buf_pos, to_copy); + stream->buf_pos += to_copy; + p += to_copy; + bytes_read += to_copy; + total -= to_copy; + continue; + } + + ssize_t ret = read(stream->fd, stream->buf, stream->buf_size); + if (ret <= 0) { + if (ret < 0) + stream->flags |= _IO_ERR; + else + stream->flags |= _IO_EOF; + break; + } + + stream->buf_len = ret; + stream->buf_pos = 0; + } + + LIBC_UNLOCK(stream->lock); + + return bytes_read / size; +} diff --git a/lib/libc/stdio/fseek.c b/lib/libc/stdio/fseek.c new file mode 100644 index 00000000..af12cd2c --- /dev/null +++ b/lib/libc/stdio/fseek.c @@ -0,0 +1,28 @@ +#include <unistd.h> +#include <io.h> +#include <stdio.h> +#include <atomic.h> + +int fseek(FILE *stream, long offset, int whence) +{ + if (stream == NULL || stream->fd < 0) + return -1; + + LIBC_LOCK(stream->lock); + + stream->buf_pos = 0; + stream->buf_len = 0; + stream->flags &= ~_IO_EOF; + + off_t result = lseek(stream->fd, offset, whence); + + LIBC_UNLOCK(stream->lock); + + if (result == (off_t)-1) { + stream->flags |= _IO_ERR; + return -1; + } + + stream->offset = result; + return 0; +} diff --git a/lib/libc/stdio/ftell.c b/lib/libc/stdio/ftell.c new file mode 100644 index 00000000..c28fe143 --- /dev/null +++ b/lib/libc/stdio/ftell.c @@ -0,0 +1,15 @@ +#include <stdio.h> +#include <limits.h> +#include <errno.h> + +long ftell(FILE *stream) +{ + off_t pos; + + if ((pos = ftello(stream)) > LONG_MAX) { + errno = EOVERFLOW; + return -1; + } + + return pos; +} diff --git a/lib/libc/stdio/ftello.c b/lib/libc/stdio/ftello.c new file mode 100644 index 00000000..d0e5dfa1 --- /dev/null +++ b/lib/libc/stdio/ftello.c @@ -0,0 +1,9 @@ +#include <io.h> +#include <atomic.h> +#include <stdio.h> +#include <unistd.h> + +off_t ftello(FILE *stream) +{ + return fseek(stream, 0, SEEK_CUR); +} diff --git a/lib/libc/stdio/fwrite.c b/lib/libc/stdio/fwrite.c new file mode 100644 index 00000000..709b1c72 --- /dev/null +++ b/lib/libc/stdio/fwrite.c @@ -0,0 +1,147 @@ +#include <io.h> +#include <libc.h> +#include <atomic.h> +#include <stdio.h> +#include <errno.h> +#include <string.h> +#include <unistd.h> +#include <fcntl.h> + +char __stdout_buffer[BUFSIZ]; +void (*__stdio_cleanup)(void); + +size_t fwrite(const void *restrict ptr, size_t size, size_t nitems, + FILE *restrict stream) +{ + size_t total_bytes; + size_t written = 0; + const char *data = (const char *)ptr; + + // Validate parameters + if (!ptr || !stream || size == 0) { + if (size == 0) + return nitems; + errno = EINVAL; + return 0; + } + + // Special case for string buffer operations (snprintf) + // When fd is -1, we're writing to a string buffer + if (stream->fd == -1 && stream->buf != NULL) { + // Calculate total bytes with overflow check + if (__builtin_mul_overflow(size, nitems, &total_bytes)) { + errno = EOVERFLOW; + return 0; + } + + // Check remaining buffer space (leave room for null terminator) + size_t space_left = + stream->buf_size > stream->buf_len ? + stream->buf_size - stream->buf_len - 1 : + 0; + + if (space_left == 0) { + return 0; + } + + // Copy as much as fits + size_t to_copy = total_bytes < space_left ? total_bytes : + space_left; + + if (to_copy > 0) { + memcpy(stream->buf + stream->buf_len, data, to_copy); + stream->buf_len += to_copy; + } + + // Return number of complete items written + return to_copy == total_bytes ? nitems : to_copy / size; + } + + // Calculate total bytes with overflow check + if (__builtin_mul_overflow(size, nitems, &total_bytes)) { + errno = EOVERFLOW; + return 0; + } + + // Check if stream is writable (fix the flag check) + if ((stream->flags & O_ACCMODE) == O_RDONLY) { + errno = EBADF; + return 0; + } + + // Check for error state + if (stream->flags & _IO_ERR) { + errno = EIO; + return 0; + } + + LIBC_LOCK(stream->lock); + + // Handle unbuffered I/O + if (stream->type == _IONBF) { + ssize_t result = write(stream->fd, data, total_bytes); + LIBC_UNLOCK(stream->lock); + + if (result < 0) { + stream->flags |= _IO_ERR; + return 0; + } + + return result == (ssize_t)total_bytes ? nitems : result / size; + } + + // Handle buffered I/O (both _IOFBF and _IOLBF) + size_t remaining = total_bytes; + + while (remaining > 0) { + // Check if buffer is full + size_t space_available = stream->buf_size - stream->buf_len; + + if (space_available == 0) { + // Flush the buffer + LIBC_UNLOCK(stream->lock); + if (fflush(stream) != 0) { + return written / size; + } + space_available = stream->buf_size; + } + + // Determine how much to copy this iteration + size_t to_copy = remaining < space_available ? remaining : + space_available; + + // Copy data to buffer + memcpy(stream->buf + stream->buf_len, data + written, to_copy); + stream->buf_len += to_copy; + written += to_copy; + remaining -= to_copy; + + // For line buffered streams, check if we need to flush + if (stream->type == _IOLBF) { + // Look for newlines in the data we just added + char *newline_pos = + memchr(stream->buf + stream->buf_len - to_copy, + '\n', to_copy); + if (newline_pos != NULL) { + LIBC_UNLOCK(stream->lock); + if (fflush(stream) != 0) { + return written / size; + } + } + } + + // For fully buffered streams, flush if buffer is full + else if (stream->type == _IOFBF && + stream->buf_len == stream->buf_size) { + LIBC_UNLOCK(stream->lock); + if (fflush(stream) != 0) { + return written / size; + } + } + } + + LIBC_UNLOCK(stream->lock); + + // Return number of complete items written + return written == total_bytes ? nitems : written / size; +} diff --git a/lib/libc/stdio/getc.c b/lib/libc/stdio/getc.c new file mode 100644 index 00000000..251675aa --- /dev/null +++ b/lib/libc/stdio/getc.c @@ -0,0 +1,9 @@ +#include <libc.h> +#include <stdio.h> + +int getc(FILE *stream) +{ + return fgetc(stream); +} + +weak_reference(getc, getc_unlocked); diff --git a/lib/libc/stdio/getchar.c b/lib/libc/stdio/getchar.c new file mode 100644 index 00000000..8c690d56 --- /dev/null +++ b/lib/libc/stdio/getchar.c @@ -0,0 +1,9 @@ +#include <libc.h> +#include <stdio.h> + +int getchar(void) +{ + return fgetc(stdin); +} + +weak_reference(getchar, getchar_unlocked); diff --git a/lib/libc/stdio/pclose.c b/lib/libc/stdio/pclose.c new file mode 100644 index 00000000..daae5bf5 --- /dev/null +++ b/lib/libc/stdio/pclose.c @@ -0,0 +1,10 @@ +#include <io.h> +#include <stdio.h> +#include <sys/wait.h> + +int pclose(FILE *stream) +{ + int stat; + fclose(stream); + return (waitpid(stream->pid, &stat, 0) < 0) ? -1 : stat; +} diff --git a/lib/libc/stdio/perror.c b/lib/libc/stdio/perror.c new file mode 100644 index 00000000..f3f4bb19 --- /dev/null +++ b/lib/libc/stdio/perror.c @@ -0,0 +1,26 @@ +#include <stdio.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <sys/uio.h> + +void perror(const char *s) +{ + struct iovec iov[4]; + + char *errstr = strerror(errno); + + if (s != NULL && *s != '\0') { + iov[0].iov_base = (void *)s; + iov[0].iov_len = strlen(s); + iov[1].iov_base = ": "; + iov[1].iov_len = 2; + } + + iov[s != NULL && *s != '\0' ? 2 : 0].iov_base = errstr; + iov[s != NULL && *s != '\0' ? 2 : 0].iov_len = strlen(errstr); + iov[s != NULL && *s != '\0' ? 3 : 1].iov_base = "\n"; + iov[s != NULL && *s != '\0' ? 3 : 1].iov_len = 1; + + writev(STDERR_FILENO, iov, s != NULL && *s != '\0' ? 4 : 2); +} diff --git a/lib/libc/stdio/popen.c b/lib/libc/stdio/popen.c new file mode 100644 index 00000000..92b6a099 --- /dev/null +++ b/lib/libc/stdio/popen.c @@ -0,0 +1,65 @@ +#include <io.h> +#include <errno.h> +#include <stdio.h> +#include <fcntl.h> +#include <unistd.h> + +FILE *popen(const char *command, const char *mode) +{ + FILE *stream; + int oflag; + int pipefd[2]; + + switch (*mode) { + case 'r': + oflag = O_RDONLY; + break; + case 'w': + oflag = O_WRONLY; + break; + default: + errno = EINVAL; + return NULL; + } + + if (pipe2(pipefd, O_CLOEXEC) < 0) + return NULL; + + stream = fdopen(pipefd[oflag], mode); + if (stream == NULL) { + close(pipefd[0]); + close(pipefd[1]); + return NULL; + } + + pid_t pid = fork(); + + if (pid < 0) { + close(pipefd[0]); + close(pipefd[1]); + fclose(stream); + return NULL; + } else if (pid == 0) { + if (oflag == O_RDONLY) { + dup2(pipefd[1], STDOUT_FILENO); + close(pipefd[0]); + close(pipefd[1]); + } else { + dup2(pipefd[0], STDIN_FILENO); + close(pipefd[0]); + close(pipefd[1]); + } + execl("/bin/sh", "sh", "-c", command, (char *)NULL); + _exit(127); + } else { + if (oflag == O_RDONLY) { + close(pipefd[1]); + } else { + close(pipefd[0]); + } + + stream->pid = pid; + + return stream; + } +} diff --git a/lib/libc/stdio/printf.c b/lib/libc/stdio/printf.c new file mode 100644 index 00000000..e8e7c388 --- /dev/null +++ b/lib/libc/stdio/printf.c @@ -0,0 +1,12 @@ +#include <stdio.h> +#include <stdarg.h> + +int printf(const char *restrict format, ...) +{ + int r; + va_list ap; + va_start(ap, format); + r = vfprintf(stdout, format, ap); + va_end(ap); + return r; +} diff --git a/lib/libc/stdio/putc.c b/lib/libc/stdio/putc.c new file mode 100644 index 00000000..2486926a --- /dev/null +++ b/lib/libc/stdio/putc.c @@ -0,0 +1,9 @@ +#include <libc.h> +#include <stdio.h> + +int putc(int c, FILE *stream) +{ + return fputc(c, stream); +} + +weak_reference(putc, putc_unlocked); diff --git a/lib/libc/stdio/putchar.c b/lib/libc/stdio/putchar.c new file mode 100644 index 00000000..f54bb9d7 --- /dev/null +++ b/lib/libc/stdio/putchar.c @@ -0,0 +1,9 @@ +#include <libc.h> +#include <stdio.h> + +int putchar(int c) +{ + return putc(c, stdout); +} + +weak_reference(putchar, putchar_unlocked); diff --git a/lib/libc/stdio/puts.c b/lib/libc/stdio/puts.c new file mode 100644 index 00000000..41024337 --- /dev/null +++ b/lib/libc/stdio/puts.c @@ -0,0 +1,9 @@ +#include <stdio.h> +#include <string.h> + +int puts(const char *s) +{ + fwrite(s, 1, strlen(s), stdout); + fwrite("\n", 1, 1, stdout); + return 0; +} diff --git a/lib/libc/stdio/remove.c b/lib/libc/stdio/remove.c new file mode 100644 index 00000000..9aec52e9 --- /dev/null +++ b/lib/libc/stdio/remove.c @@ -0,0 +1,16 @@ +#include <stdio.h> +#include <fcntl.h> +#include <syscall.h> + +int remove(const char *path) +{ + if (syscall(unlinkat, AT_FDCWD, path, 0) < 0) { + if (errno == EISDIR) { + return syscall(unlinkat, AT_FDCWD, path, AT_REMOVEDIR); + } else { + return -1; + } + } + + return 0; +} diff --git a/lib/libc/stdio/rename.c b/lib/libc/stdio/rename.c new file mode 100644 index 00000000..612326e8 --- /dev/null +++ b/lib/libc/stdio/rename.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int rename(const char *old, const char *new) +{ + return syscall(rename, old, new); +} diff --git a/lib/libc/stdio/renameat.c b/lib/libc/stdio/renameat.c new file mode 100644 index 00000000..93d435fa --- /dev/null +++ b/lib/libc/stdio/renameat.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int renameat(int oldfd, const char *old, int newfd, const char *new) +{ + return syscall(renameat, oldfd, old, newfd, new); +} diff --git a/lib/libc/stdio/rewind.c b/lib/libc/stdio/rewind.c new file mode 100644 index 00000000..b047fa41 --- /dev/null +++ b/lib/libc/stdio/rewind.c @@ -0,0 +1,7 @@ +#include <stdio.h> + +void rewind(FILE *stream) +{ + fseek(stream, 0L, SEEK_SET); + clearerr(stream); +} diff --git a/lib/libc/stdio/setbuf.c b/lib/libc/stdio/setbuf.c new file mode 100644 index 00000000..a1ef7b31 --- /dev/null +++ b/lib/libc/stdio/setbuf.c @@ -0,0 +1,7 @@ +#include <io.h> +#include <stdio.h> + +void setbuf(FILE *restrict stream, char *restrict buf) +{ + setvbuf(stream, buf, buf != NULL ? _IOFBF : _IONBF, BUFSIZ); +} diff --git a/lib/libc/stdio/setvbuf.c b/lib/libc/stdio/setvbuf.c new file mode 100644 index 00000000..56d7196c --- /dev/null +++ b/lib/libc/stdio/setvbuf.c @@ -0,0 +1,20 @@ +#include <io.h> +#include <stdio.h> + +int setvbuf(FILE *restrict stream, char *restrict buf, int type, size_t size) +{ + if (type != _IOFBF && type != _IOLBF && type != _IONBF) + return -1; + if (type != _IONBF && (buf == NULL || size == 0)) + return -1; + + if (stream->fd < 0) + return -1; + + stream->buf = buf; + stream->buf_size = size; + stream->buf_pos = 0; + stream->type = type; + + return 0; +} diff --git a/lib/libc/stdio/snprintf.c b/lib/libc/stdio/snprintf.c new file mode 100644 index 00000000..81f2c5b6 --- /dev/null +++ b/lib/libc/stdio/snprintf.c @@ -0,0 +1,12 @@ +#include <stdio.h> +#include <stdarg.h> + +int snprintf(char *restrict s, size_t n, const char *restrict format, ...) +{ + int r; + va_list ap; + va_start(ap, format); + r = vsnprintf(s, n, format, ap); + va_end(ap); + return r; +} diff --git a/lib/libc/stdio/sprintf.c b/lib/libc/stdio/sprintf.c new file mode 100644 index 00000000..057c162d --- /dev/null +++ b/lib/libc/stdio/sprintf.c @@ -0,0 +1,13 @@ +#include <stdio.h> +#include <limits.h> +#include <stdarg.h> + +int sprintf(char *restrict s, const char *restrict format, ...) +{ + int r; + va_list ap; + va_start(ap, format); + r = vsprintf(s, format, ap); + va_end(ap); + return r; +} diff --git a/lib/libc/stdio/stderr.c b/lib/libc/stdio/stderr.c new file mode 100644 index 00000000..42098960 --- /dev/null +++ b/lib/libc/stdio/stderr.c @@ -0,0 +1,20 @@ +#include <io.h> +#include <fcntl.h> +#include <unistd.h> + +#define BUFSIZ 4096 + +struct __FILE __stderr = { .fd = STDERR_FILENO, + .flags = O_WRONLY, + .type = 0, + .buf = 0, + .buf_len = 0, + .buf_size = 0, + .buf_pos = 0, + .eof = 0, + .unget_cnt = 0, + .next = 0, + .offset = 0, + .lock = ATOMIC_FLAG_INIT }; + +struct FILE *const stderr = (struct FILE *)&__stderr; diff --git a/lib/libc/stdio/stdin.c b/lib/libc/stdio/stdin.c new file mode 100644 index 00000000..bcc2eca6 --- /dev/null +++ b/lib/libc/stdio/stdin.c @@ -0,0 +1,18 @@ +#include <io.h> +#include <libc.h> +#include <fcntl.h> +#include <unistd.h> + +#define BUFSIZ 4096 +#define _IOLBF 0x1 + +weak char __stdin_buffer[0]; +struct __FILE __stdin = { .fd = STDOUT_FILENO, + .flags = O_RDONLY, + .buf = __stdin_buffer, + .type = 0x0, + .buf_size = BUFSIZ, + .buf_pos = 0, + .offset = 0 }; + +struct FILE *const stdin = (struct FILE *)&__stdin; diff --git a/lib/libc/stdio/stdout.c b/lib/libc/stdio/stdout.c new file mode 100644 index 00000000..7d55c3e7 --- /dev/null +++ b/lib/libc/stdio/stdout.c @@ -0,0 +1,34 @@ +#include <io.h> +#include <libc.h> +#include <fcntl.h> +#include <atomic.h> +#include <unistd.h> + +#define BUFSIZ 4096 + +weak char __stdout_buffer[0]; +static atomic_flag __stdio_lock = ATOMIC_FLAG_INIT; +struct __FILE __stdout = { .fd = STDOUT_FILENO, + .flags = O_WRONLY, + .type = 1, + .buf = __stdout_buffer, + .buf_len = 0, + .buf_size = BUFSIZ, + .buf_pos = 0, + .eof = 0, + .unget_cnt = 0, + .offset = 0, + .next = NULL, + .lock = ATOMIC_FLAG_INIT }; + +struct __FILE *const stdout = (struct __FILE *)&__stdout; + +void __libc_fadd(struct __FILE *f) +{ + LIBC_LOCK(__stdio_lock); + struct __FILE *cur = &__stdout; + while (cur->next) + cur = cur->next; + cur->next = f; + LIBC_UNLOCK(__stdio_lock); +} diff --git a/lib/libc/stdio/vasprintf.c b/lib/libc/stdio/vasprintf.c new file mode 100644 index 00000000..128d4ee3 --- /dev/null +++ b/lib/libc/stdio/vasprintf.c @@ -0,0 +1,18 @@ +#include <io.h> +#include <stdarg.h> +#include <stdio.h> + +// TODO: maybe use memstream in future?? +int vasprintf(char **restrict ptr, const char *restrict format, va_list ap) +{ + int l; + va_list ap2; + va_copy(ap2, ap); + l = vsnprintf(0, 0, format, ap2); + va_end(ap2); + + if (l < 0 || !(*ptr = malloc(l + 1U))) + return -1; + + return vsnprintf(*ptr, l + 1U, format, ap); +} diff --git a/lib/libc/stdio/vdprintf.c b/lib/libc/stdio/vdprintf.c new file mode 100644 index 00000000..66a041cc --- /dev/null +++ b/lib/libc/stdio/vdprintf.c @@ -0,0 +1,12 @@ +#include <io.h> +#include <stdio.h> + +int vdprintf(int fildes, const char *restrict format, va_list ap) +{ + int r; + FILE f; + f.fd = fildes; + f.type = _IONBF; + r = vfprintf(&f, format, ap); + return r; +} diff --git a/lib/libc/stdio/vfprintf.c b/lib/libc/stdio/vfprintf.c new file mode 100644 index 00000000..fb4c200e --- /dev/null +++ b/lib/libc/stdio/vfprintf.c @@ -0,0 +1,809 @@ +#include <ctype.h> +#include <errno.h> +#include <stdio.h> +#include <stdarg.h> +#include <stdint.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <stddef.h> +#include <math.h> +#include <unistd.h> +#include <wchar.h> + +extern char *dtoa(double, int mode, int ndigits, int *decpt, int *sign, + char **rve); +extern void freedtoa(char *s); + +static int utoa_base(unsigned long long v, char *s, int b, int p, int u) +{ + const char *d = u ? "0123456789ABCDEF" : "0123456789abcdef"; + char buf[65]; + int i = 0, j; + if (p < 0) + p = 0; + if (p > 64) + p = 64; + do { + buf[i++] = d[v % b]; + v /= b; + } while (v && i < 64); + while (i < p && i < 64) + buf[i++] = '0'; + for (j = 0; j < i; ++j) + s[j] = buf[i - j - 1]; + s[i] = 0; + return i; +} + +int vfprintf(FILE *restrict stream, const char *restrict format, va_list ap) +{ + const char *ptr; + int total_printed; + + ptr = format; + total_printed = 0; + + while (*ptr != '\0') { + if (*ptr != '%') { + fputc(*ptr, stream); + total_printed++; + ptr++; + } else { + char *s = NULL; + char buf[128]; + int l = 0; + int width = 0; + int padding = 0; + int precision = -1; + + ptr++; + + enum { + FLAG_NONE = 0, + FLAG_MINUS = 1 << 0, + FLAG_PLUS = 1 << 1, + FLAG_HASH = 1 << 2, + FLAG_ZERO = 1 << 3, + FLAG_SPACE = 1 << 4 + } flags = FLAG_NONE; + + enum { + LENGTH_NONE, + LENGTH_HH, + LENGTH_H, + LENGTH_L, + LENGTH_LL, + LENGTH_J, + LENGTH_Z, + LENGTH_T, + LENGTH_CAPL + } length = LENGTH_NONE; + + while (*ptr == '-' || *ptr == '+' || *ptr == ' ' || + *ptr == '0' || *ptr == '#') { + if (*ptr == '-') + flags |= FLAG_MINUS; + else if (*ptr == '+') + flags |= FLAG_PLUS; + else if (*ptr == ' ') + flags |= FLAG_SPACE; + else if (*ptr == '0') + flags |= FLAG_ZERO; + else if (*ptr == '#') + flags |= FLAG_HASH; + ptr++; + } + + if (*ptr == '*') { + width = va_arg(ap, int); + if (width < 0) { + flags |= FLAG_MINUS; + width = -width; + } + ptr++; + } else { + while (isdigit(*ptr)) { + width = width * 10 + (*ptr - '0'); + ptr++; + } + } + + if (*ptr == '.') { + ptr++; + if (*ptr == '*') { + precision = va_arg(ap, int); + if (precision < 0) + precision = -1; + ptr++; + } else { + precision = 0; + while (isdigit(*ptr)) { + precision = precision * 10 + + (*ptr - '0'); + ptr++; + } + } + } + + switch (*ptr) { + case 'h': + if (*(ptr + 1) == 'h') { + length = LENGTH_HH; + ptr++; + } else + length = LENGTH_H; + ptr++; + break; + case 'l': + if (*(ptr + 1) == 'l') { + length = LENGTH_LL; + ptr++; + } else + length = LENGTH_L; + ptr++; + break; + case 'L': + length = LENGTH_CAPL; + ptr++; + break; + case 'j': + length = LENGTH_J; + ptr++; + break; + case 'z': + length = LENGTH_Z; + ptr++; + break; + case 't': + length = LENGTH_T; + ptr++; + break; + } + + switch (*ptr) { + case 'i': + case 'd': { + long long val; + int negative = 0; + + switch (length) { + case LENGTH_NONE: + val = va_arg(ap, int); + break; + case LENGTH_HH: + val = (signed char)va_arg(ap, int); + break; + case LENGTH_H: + val = (short)va_arg(ap, int); + break; + case LENGTH_L: + val = va_arg(ap, long); + break; + case LENGTH_LL: + val = va_arg(ap, long long); + break; + case LENGTH_J: + val = va_arg(ap, intmax_t); + break; + case LENGTH_Z: + val = va_arg(ap, ssize_t); + break; + case LENGTH_T: + val = va_arg(ap, ptrdiff_t); + break; + case LENGTH_CAPL: + errno = EINVAL; + return -1; + } + + unsigned long long uval; + + if (val < 0) { + uval = (unsigned long long)(-val); + negative = 1; + } else { + uval = (unsigned long long)val; + } + + l = utoa_base(uval, buf, 10, precision, 0); + + s = buf; + if (negative) { + memmove(s + 1, s, l); + s[0] = '-'; + s[++l] = '\0'; + } else if (flags & FLAG_PLUS) { + memmove(s + 1, s, l); + s[0] = '+'; + s[++l] = '\0'; + } else if (flags & FLAG_SPACE) { + memmove(s + 1, s, l); + s[0] = ' '; + s[++l] = '\0'; + } + + break; + } + case 'o': + case 'u': + case 'x': + case 'X': { + unsigned long long val; + char fmt_char = *ptr; + + switch (length) { + case LENGTH_NONE: + val = va_arg(ap, unsigned int); + break; + case LENGTH_HH: + val = (unsigned char)va_arg( + ap, unsigned int); + break; + case LENGTH_H: + val = (unsigned short)va_arg( + ap, unsigned int); + break; + case LENGTH_L: + val = va_arg(ap, unsigned long); + break; + case LENGTH_LL: + val = va_arg(ap, unsigned long long); + break; + case LENGTH_J: + val = va_arg(ap, uintmax_t); + break; + case LENGTH_Z: + val = va_arg(ap, size_t); + break; + case LENGTH_T: + val = (ptrdiff_t)va_arg(ap, ptrdiff_t); + break; + case LENGTH_CAPL: + errno = EINVAL; + return -1; + } + + if (fmt_char == 'o') { + l = utoa_base(val, buf, 8, precision, + 0); + } else if (fmt_char == 'u') { + l = utoa_base(val, buf, 10, precision, + 0); + } else if (fmt_char == 'x') { + l = utoa_base(val, buf, 16, precision, + 0); + } else if (fmt_char == 'X') { + l = utoa_base(val, buf, 16, precision, + 1); + } else { + l = utoa_base(val, buf, 10, precision, + 0); + } + + s = buf; + + if ((flags & FLAG_HASH) && val != 0) { + if (fmt_char == 'o') { + memmove(s + 1, s, l); + s[0] = '0'; + s[++l] = '\0'; + } else if (fmt_char == 'x') { + memmove(s + 2, s, l); + s[0] = '0'; + s[1] = 'x'; + l += 2; + s[l] = '\0'; + } else if (fmt_char == 'X') { + memmove(s + 2, s, l); + s[0] = '0'; + s[1] = 'X'; + l += 2; + s[l] = '\0'; + } + } + + break; + } + + case 'f': + case 'F': + case 'e': + case 'E': + case 'g': + case 'G': { + double val; + + if (length == LENGTH_CAPL) + val = (double)va_arg(ap, long double); + else + val = va_arg(ap, double); + + if (precision == -1) + precision = 6; + + s = buf; + int pos = 0; + + if (isnan(val)) { + strcpy(buf, + (*ptr == 'F' || *ptr == 'E' || + *ptr == 'G') ? + "NAN" : + "nan"); + l = 3; + break; + } + if (isinf(val)) { + if (val < 0) { + buf[pos++] = '-'; + } else if (flags & FLAG_PLUS) { + buf[pos++] = '+'; + } else if (flags & FLAG_SPACE) { + buf[pos++] = ' '; + } + strcpy(buf + pos, + (*ptr == 'F' || *ptr == 'E' || + *ptr == 'G') ? + "INF" : + "inf"); + l = pos + 3; + break; + } + + if (val < 0) { + buf[pos++] = '-'; + val = -val; + } else if (flags & FLAG_PLUS) { + buf[pos++] = '+'; + } else if (flags & FLAG_SPACE) { + buf[pos++] = ' '; + } + + switch (*ptr) { + case 'f': + case 'F': { + int decpt, sign; + char *rve; + char *digits = dtoa(val, 3, precision, + &decpt, &sign, + &rve); + + if (sign && val != 0.0) { + buf[pos++] = '-'; + } + + if (decpt <= 1 && digits[0] == '0' && + digits[1] == '\0') { + buf[pos++] = '0'; + if (precision > 0) { + buf[pos++] = '.'; + for (int i = 0; + i < precision; + i++) { + buf[pos++] = + '0'; + } + } + } else if (decpt <= 0) { + buf[pos++] = '0'; + if (precision > 0) { + buf[pos++] = '.'; + for (int i = 0; + i < -decpt && + i < precision; + i++) { + buf[pos++] = + '0'; + } + int remaining = + precision + + decpt; + char *d = digits; + while (*d && + remaining-- > + 0) { + buf[pos++] = + *d++; + } + while (remaining-- > + 0) { + buf[pos++] = + '0'; + } + } + } else { + char *d = digits; + int digits_used = 0; + for (int i = 0; i < decpt && *d; + i++) { + buf[pos++] = *d++; + digits_used++; + } + while (digits_used < decpt) { + buf[pos++] = '0'; + digits_used++; + } + if (precision > 0) { + buf[pos++] = '.'; + for (int i = 0; + i < precision; + i++) { + if (*d) { + buf[pos++] = + *d++; + } else { + buf[pos++] = + '0'; + } + } + } + } + + buf[pos] = '\0'; + l = pos; + freedtoa(digits); + break; + } + case 'e': + case 'E': { + int decpt, sign; + char *rve; + char *digits = + dtoa(val, 2, precision + 1, + &decpt, &sign, &rve); + + if (sign && val != 0.0) { + buf[pos++] = '-'; + } + + if (*digits) { + buf[pos++] = *digits++; + } else { + buf[pos++] = '0'; + } + + if (precision > 0) { + buf[pos++] = '.'; + for (int i = 0; i < precision; + i++) { + if (*digits) { + buf[pos++] = + *digits++; + } else { + buf[pos++] = + '0'; + } + } + } + + buf[pos++] = (*ptr == 'E') ? 'E' : 'e'; + int exp = decpt - 1; + buf[pos++] = (exp >= 0) ? '+' : '-'; + if (exp < 0) + exp = -exp; + if (exp < 10) + buf[pos++] = '0'; + pos += utoa_base(exp, buf + pos, 10, 0, + 0); + + buf[pos] = '\0'; + l = pos; + freedtoa(digits); + break; + } + case 'g': + case 'G': { + int decpt, sign; + char *rve; + char *digits = dtoa(val, 2, precision, + &decpt, &sign, + &rve); + + if (sign && val != 0.0) { + buf[pos++] = '-'; + } + + int exp = decpt - 1; + if (exp < -4 || exp >= precision) { + if (*digits) { + buf[pos++] = *digits++; + } + if (*digits) { + buf[pos++] = '.'; + while (*digits) { + buf[pos++] = + *digits++; + } + } + buf[pos++] = (*ptr == 'G') ? + 'E' : + 'e'; + buf[pos++] = (exp >= 0) ? '+' : + '-'; + if (exp < 0) + exp = -exp; + if (exp < 10) + buf[pos++] = '0'; + pos += utoa_base(exp, buf + pos, + 10, 0, 0); + } else { + if (decpt <= 0) { + buf[pos++] = '0'; + if (*digits && + *digits != '0') { + buf[pos++] = + '.'; + for (int i = 0; + i < -decpt; + i++) { + buf[pos++] = + '0'; + } + char *d = + digits; + while (*d && + *d != '0') { + buf[pos++] = + *d++; + } + } + } else { + char *d = digits; + for (int i = 0; + i < decpt && *d; + i++) { + buf[pos++] = + *d++; + } + if (*d) { + buf[pos++] = + '.'; + while (*d) { + buf[pos++] = + *d++; + } + } + } + } + + while (pos > 1 && buf[pos - 1] == '0' && + pos > 2 && buf[pos - 2] != 'e' && + buf[pos - 2] != 'E') { + pos--; + } + if (pos > 1 && buf[pos - 1] == '.') { + pos--; + } + + buf[pos] = '\0'; + l = pos; + freedtoa(digits); + break; + } + } + + break; + } + + case 'a': + case 'A': { + double val; + + if (length == LENGTH_CAPL) + val = (double)va_arg(ap, long double); + else + val = va_arg(ap, double); + + int upper = (*ptr == 'A'); + int pos = 0; + + if (val < 0) { + buf[pos++] = '-'; + val = -val; + } else if (flags & FLAG_PLUS) { + buf[pos++] = '+'; + } else if (flags & FLAG_SPACE) { + buf[pos++] = ' '; + } + + if (val == 0.0) { + strcpy(buf + pos, + upper ? "0X0P+0" : "0x0p+0"); + l = pos + 6; + break; + } + + int exp; + double mant = frexp(val, &exp); + mant *= 2.0; + exp--; + + buf[pos++] = '0'; + buf[pos++] = upper ? 'X' : 'x'; + buf[pos++] = '1'; + + if (precision == -1) { + precision = 13; + } + + if (precision > 0) { + buf[pos++] = '.'; + mant -= 1.0; + for (int i = 0; i < precision; i++) { + mant *= 16.0; + int digit = (int)mant; + if (digit > 15) + digit = 15; + buf[pos++] = + (digit < 10) ? + ('0' + digit) : + (upper ? ('A' + + digit - + 10) : + ('a' + + digit - + 10)); + mant -= digit; + } + + while (pos > 0 && buf[pos - 1] == '0') { + pos--; + } + if (pos > 0 && buf[pos - 1] == '.') { + pos--; + } + } + + buf[pos++] = upper ? 'P' : 'p'; + if (exp >= 0) { + buf[pos++] = '+'; + } else { + buf[pos++] = '-'; + exp = -exp; + } + pos += utoa_base(exp, buf + pos, 10, 0, 0); + + buf[pos] = '\0'; + s = buf; + l = pos; + break; + } + + case 'C': + length = LENGTH_L; + /* fallthrough */ + case 'c': { + if (length == LENGTH_L) { + } else { + char c = (char)va_arg(ap, int); + buf[0] = c; + buf[1] = '\0'; + s = buf; + l = 1; + } + break; + } + + case 'S': + length = LENGTH_L; + /* fallthrough */ + case 's': + if (length == LENGTH_L) { + } else { + s = va_arg(ap, char *); + l = strlen(s); + if (precision >= 0 && precision < l) + l = precision; + } + break; + + case 'p': { + void *ptr_val = va_arg(ap, void *); + uintptr_t uptr = (uintptr_t)ptr_val; + int len = utoa_base((unsigned long long)uptr, + buf + 2, 16, + sizeof(void *) * 2, 0); + buf[0] = '0'; + buf[1] = 'x'; + buf[len + 2] = '\0'; + l = len + 2; + s = buf; + break; + } + + case 'n': { + int *ip = va_arg(ap, int *); + if (ip != NULL) { + *ip = total_printed; + } + l = 0; + break; + } + case '%': { + buf[0] = '%'; + s = buf; + l = 1; + break; + } + default: + errno = EINVAL; + return -1; + } + + ptr++; + + if (l < width) { + padding = width - l; + } + + char format_char = *(ptr - 1); + char pad_char = ' '; + if ((flags & FLAG_ZERO) && !(flags & FLAG_MINUS) && + (format_char == 'd' || format_char == 'i' || + format_char == 'u' || format_char == 'o' || + format_char == 'x' || format_char == 'X' || + format_char == 'f' || format_char == 'F' || + format_char == 'e' || format_char == 'E' || + format_char == 'g' || format_char == 'G') && + precision < 0) { + pad_char = '0'; + } + + if ((flags & FLAG_MINUS) == 0) { + if (pad_char == '0' && s != NULL) { + int prefix_len = 0; + + if (s[0] == '-' || s[0] == '+' || + s[0] == ' ') { + fwrite(s, 1, 1, stream); + total_printed++; + s++; + l--; + prefix_len++; + } + + if (l >= 2 && s[0] == '0' && + (s[1] == 'x' || s[1] == 'X')) { + fwrite(s, 1, 2, stream); + total_printed += 2; + s += 2; + l -= 2; + prefix_len += 2; + } + + for (int i = 0; i < padding; i++) { + fwrite("0", 1, 1, stream); + total_printed++; + } + } else { + for (int i = 0; i < padding; i++) { + if (pad_char == '0') { + fwrite("0", 1, 1, + stream); + } else { + fwrite(" ", 1, 1, + stream); + } + total_printed++; + } + } + } + + if (l > 0) { + if (s != NULL) + fwrite(s, 1, l, stream); + total_printed += l; + } + + if (flags & FLAG_MINUS) { + for (int i = 0; i < padding; i++) { + fwrite(" ", 1, 1, stream); + total_printed++; + } + } + } + } + + return total_printed; +} diff --git a/lib/libc/stdio/vprintf.c b/lib/libc/stdio/vprintf.c new file mode 100644 index 00000000..10e938b7 --- /dev/null +++ b/lib/libc/stdio/vprintf.c @@ -0,0 +1,6 @@ +#include <stdio.h> + +int vprintf(const char *restrict format, va_list ap) +{ + return vfprintf(stdout, format, ap); +} diff --git a/lib/libc/stdio/vsnprintf.c b/lib/libc/stdio/vsnprintf.c new file mode 100644 index 00000000..b7a59064 --- /dev/null +++ b/lib/libc/stdio/vsnprintf.c @@ -0,0 +1,45 @@ +#include <io.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdatomic.h> + +int vsnprintf(char *restrict s, size_t n, const char *restrict format, + va_list ap) +{ + int r; + FILE f; + + if (n == 0) { + return 0; + } + + if (!s) { + return -1; + } + + memset(&f, 0, sizeof(f)); + f.fd = -1; + f.flags = O_WRONLY; + f.type = _IONBF; + atomic_flag_clear(&f.lock); + f.buf = s; + f.buf_size = n; + f.buf_len = 0; + f.buf_pos = 0; + f.eof = 0; + f.unget_cnt = 0; + f.offset = 0; + f.next = NULL; + + r = vfprintf(&f, format, ap); + + if (f.buf_len < n) { + s[f.buf_len] = '\0'; + } else if (n > 0) { + s[n - 1] = '\0'; + r = n - 1; + } + + return r; +} diff --git a/lib/libc/stdio/vsprintf.c b/lib/libc/stdio/vsprintf.c new file mode 100644 index 00000000..eec52313 --- /dev/null +++ b/lib/libc/stdio/vsprintf.c @@ -0,0 +1,7 @@ +#include <stdarg.h> +#include <stdio.h> + +int vsprintf(char *restrict s, const char *restrict format, va_list ap) +{ + return vsnprintf(s, (size_t)-1, format, ap); +} diff --git a/lib/libc/stdlib/_Exit.c b/lib/libc/stdlib/_Exit.c new file mode 100644 index 00000000..beb53e34 --- /dev/null +++ b/lib/libc/stdlib/_Exit.c @@ -0,0 +1,6 @@ +#include <unistd.h> + +_Noreturn void _Exit(int status) +{ + _exit(status); +} diff --git a/lib/libc/stdlib/__mb_cur_max.c b/lib/libc/stdlib/__mb_cur_max.c new file mode 100644 index 00000000..2f8affa2 --- /dev/null +++ b/lib/libc/stdlib/__mb_cur_max.c @@ -0,0 +1,6 @@ +int __mb_cur_max(void) +{ + // TODO: if locale (c/utf8) will be implemented + // then return the correct value here if c then 1 else if utf8 then 4 + return 1; +} diff --git a/lib/libc/stdlib/abort.c b/lib/libc/stdlib/abort.c new file mode 100644 index 00000000..3d022e70 --- /dev/null +++ b/lib/libc/stdlib/abort.c @@ -0,0 +1,27 @@ +#include <atomic.h> +#include <stdlib.h> +#include <syscall.h> +#include <asm-generic/signal.h> +#include <thread.h> +#include <threads.h> +#include <unistd.h> +#include <libc.h> + +int raise(int); + +_Noreturn void abort(void) +{ + struct sigaction sa; + + raise(SIGABRT); + + LIBC_LOCK(libc.lock.abort); + sa.sa_handler = SIG_DFL; + + __syscall(rt_sigaction, SIGABRT, &sa, NULL, _NSIG / 8); + __syscall(tkill, thrd_current()->tid, SIGABRT); + + // This point should never be reached + raise(SIGKILL); + _exit(127); +} diff --git a/lib/libc/stdlib/abs.c b/lib/libc/stdlib/abs.c new file mode 100644 index 00000000..ac2bc605 --- /dev/null +++ b/lib/libc/stdlib/abs.c @@ -0,0 +1,4 @@ +int abs(int i) +{ + return (i < 0) ? -i : i; +} diff --git a/lib/libc/stdlib/aligned_alloc.c b/lib/libc/stdlib/aligned_alloc.c new file mode 100644 index 00000000..f978dfa9 --- /dev/null +++ b/lib/libc/stdlib/aligned_alloc.c @@ -0,0 +1,39 @@ +#include <errno.h> +#include <stdlib.h> +#include <stdint.h> +#include <sys/mman.h> +#include <unistd.h> + +void *aligned_alloc(size_t alignment, size_t size) +{ + if (alignment == 0 || (alignment & (alignment - 1)) != 0) { + errno = EINVAL; + return NULL; + } + + if (size % alignment != 0) { + errno = EINVAL; + return NULL; + } + + if (size == 0) { + return NULL; + } + + size_t total_size = size + alignment - 1 + sizeof(void *); + + void *raw_ptr = malloc(total_size); + if (raw_ptr == NULL) { + errno = ENOMEM; + return NULL; + } + + uintptr_t raw_addr = (uintptr_t)raw_ptr; + uintptr_t aligned_addr = (raw_addr + sizeof(void *) + alignment - 1) & + ~(alignment - 1); + + void **orig_ptr_slot = (void **)(aligned_addr - sizeof(void *)); + *orig_ptr_slot = raw_ptr; + + return (void *)aligned_addr; +} diff --git a/lib/libc/stdlib/atexit.c b/lib/libc/stdlib/atexit.c new file mode 100644 index 00000000..6c84fd4a --- /dev/null +++ b/lib/libc/stdlib/atexit.c @@ -0,0 +1,16 @@ +#include <stdlib.h> + +static void (*__atexit_fvec[32])(void) = { NULL }; + +int atexit(void (*func)(void)) +{ + for (int i = 0; i < 32; i++) { + if (__atexit_fvec[i] == NULL) { + __atexit_fvec[i] = func; + __atexit_fvec[i + 1] = NULL; + return 0; + } + } + + return -1; +} diff --git a/lib/libc/stdlib/atof.c b/lib/libc/stdlib/atof.c new file mode 100644 index 00000000..5f5fc91f --- /dev/null +++ b/lib/libc/stdlib/atof.c @@ -0,0 +1,6 @@ +#include <stdlib.h> + +double atof(const char *str) +{ + return strtod(str, (char **)NULL); +} diff --git a/lib/libc/stdlib/atoi.c b/lib/libc/stdlib/atoi.c new file mode 100644 index 00000000..97b663d1 --- /dev/null +++ b/lib/libc/stdlib/atoi.c @@ -0,0 +1,6 @@ +#include <stdlib.h> + +int atoi(const char *str) +{ + return (int)strtol(str, (char **)NULL, 10); +} diff --git a/lib/libc/stdlib/atol.c b/lib/libc/stdlib/atol.c new file mode 100644 index 00000000..976f9997 --- /dev/null +++ b/lib/libc/stdlib/atol.c @@ -0,0 +1,6 @@ +#include <stdlib.h> + +long atol(const char *nptr) +{ + return strtol(nptr, (char **)NULL, 10); +} diff --git a/lib/libc/stdlib/atoll.c b/lib/libc/stdlib/atoll.c new file mode 100644 index 00000000..bea1a031 --- /dev/null +++ b/lib/libc/stdlib/atoll.c @@ -0,0 +1,6 @@ +#include <stdlib.h> + +long long atoll(const char *nptr) +{ + return strtoll(nptr, (char **)NULL, 10); +} diff --git a/lib/libc/stdlib/bsearch.c b/lib/libc/stdlib/bsearch.c new file mode 100644 index 00000000..a2793b0d --- /dev/null +++ b/lib/libc/stdlib/bsearch.c @@ -0,0 +1,87 @@ +/* + * Copyright (c) 1990 Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. [rescinded 22 July 1999] + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + +@deftypefn Supplemental void* bsearch (const void *@var{key}, @ + const void *@var{base}, size_t @var{nmemb}, size_t @var{size}, @ + int (*@var{compar})(const void *, const void *)) + +Performs a search over an array of @var{nmemb} elements pointed to by +@var{base} for a member that matches the object pointed to by @var{key}. +The size of each member is specified by @var{size}. The array contents +should be sorted in ascending order according to the @var{compar} +comparison function. This routine should take two arguments pointing to +the @var{key} and to an array member, in that order, and should return an +integer less than, equal to, or greater than zero if the @var{key} object +is respectively less than, matching, or greater than the array member. + +@end deftypefn + +*/ + +#include <sys/types.h> /* size_t */ +#include <stdio.h> + +/* + * Perform a binary search. + * + * The code below is a bit sneaky. After a comparison fails, we + * divide the work in half by moving either left or right. If lim + * is odd, moving left simply involves halving lim: e.g., when lim + * is 5 we look at item 2, so we change lim to 2 so that we will + * look at items 0 & 1. If lim is even, the same applies. If lim + * is odd, moving right again involes halving lim, this time moving + * the base up one item past p: e.g., when lim is 5 we change base + * to item 3 and make lim 2 so that we will look at items 3 and 4. + * If lim is even, however, we have to shrink it by one before + * halving: e.g., when lim is 4, we still looked at item 2, so we + * have to make lim 3, then halve, obtaining 1, so that we will only + * look at item 3. + */ +void *bsearch(const void *key, const void *base0, size_t nmemb, size_t size, + int (*compar)(const void *, const void *)) +{ + const char *base = (const char *)base0; + int lim, cmp; + const void *p; + + for (lim = nmemb; lim != 0; lim >>= 1) { + p = base + (lim >> 1) * size; + cmp = (*compar)(key, p); + if (cmp == 0) + return (void *)p; + if (cmp > 0) { /* key > p: move right */ + base = (const char *)p + size; + lim--; + } /* else move left */ + } + return (NULL); +} diff --git a/lib/libc/stdlib/btowc.c b/lib/libc/stdlib/btowc.c new file mode 100644 index 00000000..f16865b7 --- /dev/null +++ b/lib/libc/stdlib/btowc.c @@ -0,0 +1,18 @@ +#include <wchar.h> +#include <stdio.h> +#include <stdlib.h> + +#define CODEUNIT(c) (0xdfff & (signed char)(c)) + +wint_t btowc(int c) +{ + if ((unsigned char)c < 128U) { + return c; + } + + if (MB_CUR_MAX == 1 && c != EOF) { + return CODEUNIT(c); + } + + return WEOF; +} diff --git a/lib/libc/stdlib/calloc.c b/lib/libc/stdlib/calloc.c new file mode 100644 index 00000000..408eef5e --- /dev/null +++ b/lib/libc/stdlib/calloc.c @@ -0,0 +1,25 @@ +#include <errno.h> +#include <string.h> +#include <stdlib.h> + +void *calloc(size_t nelem, size_t elsize) +{ + void *ptr; + size_t total; + + if (nelem == 0 || elsize == 0) { + errno = EINVAL; + return NULL; + } + + if (__builtin_mul_overflow(nelem, elsize, &total)) { + errno = ENOMEM; + return NULL; + } + + if ((ptr = malloc(total)) != NULL) { + memset(ptr, 0, total); + } + + return ptr; +} diff --git a/lib/libc/stdlib/div.c b/lib/libc/stdlib/div.c new file mode 100644 index 00000000..cadc292e --- /dev/null +++ b/lib/libc/stdlib/div.c @@ -0,0 +1,9 @@ +#include <stdlib.h> + +div_t div(int numer, int denom) +{ + div_t result; + result.quot = numer / denom; + result.rem = numer % denom; + return result; +} diff --git a/lib/libc/stdlib/exit.c b/lib/libc/stdlib/exit.c new file mode 100644 index 00000000..34b8a0f2 --- /dev/null +++ b/lib/libc/stdlib/exit.c @@ -0,0 +1,69 @@ +#include <io.h> +#include <libc.h> +#include <unistd.h> +#include <stdio.h> + +void (*__dummy_atexit_fvec)(void); +weak_reference(__dummy_atexit_fvec, __atexit_fvec); + +void (*__dummy_stdio_cleanup)(void); +weak_reference(__dummy_stdio_cleanup, __stdio_cleanup); + +static void __fclose(FILE *fp) +{ + if (fp == NULL) { + return; + } + + if (fp->buf_len > 0) { + fflush(fp); + } + + if (fp->fd > STDERR_FILENO) { + close(fp->fd); + } + + if (fp->buf) { + free(fp->buf); + } + + if (fp != stdout && fp != stderr && fp != stdin) { + free(fp); + } +} + +static void __stdio_cleanup_impl(void) +{ + write(1, "HELLO\n", 6); + fflush(stdout); + + if (stdout->next != NULL) { + FILE *cur = stdout->next; + while (cur) { + struct __FILE *next = cur->next; + __fclose(cur); + cur = next; + } + } +} + +void exit(int status) +{ + void (*fptr)(void); + + /* Only do stdio cleanup if it was referenced (meaning stdio was used) + */ + if (__stdio_cleanup) { + __stdio_cleanup_impl(); + } + + if (__atexit_fvec) { + fptr = __atexit_fvec; + while (fptr) { + fptr(); + fptr++; + } + } + + _exit(status); +} diff --git a/lib/libc/stdlib/free.c b/lib/libc/stdlib/free.c new file mode 100644 index 00000000..40320dc7 --- /dev/null +++ b/lib/libc/stdlib/free.c @@ -0,0 +1,101 @@ +#include <libc.h> +#include <sys/mman.h> +#include <atomic.h> +#include <malloc.h> +#include <stdint.h> +#include <stdbool.h> + +void free(void *ptr) +{ + if (ptr == NULL) { + return; + } + + LIBC_LOCK(libc.lock.malloc); + + struct page *p = __malloc_pvec; + int found_in_pages = 0; + + while (p) { + if ((uintptr_t)ptr >= (uintptr_t)p->heap && + (uintptr_t)ptr < (uintptr_t)(p->heap + (p->block.size * + p->block.count))) { + size_t offset = (uintptr_t)ptr - (uintptr_t)p->heap; + size_t index = offset / p->block.size; + size_t byte_index = index / 8; + size_t bit_index = index % 8; + + LIBC_LOCK(p->lock); + if (p->bitmap[byte_index] & (1 << bit_index)) { + p->bitmap[byte_index] &= ~(1 << bit_index); + p->block.used--; + found_in_pages = 1; + } + LIBC_UNLOCK(p->lock); + + if (found_in_pages && p->block.used == 0) { + if (p->prev) + p->prev->next = p->next; + if (p->next) + p->next->prev = p->prev; + if (p == __malloc_pvec) + __malloc_pvec = p->next; + + munmap(p, (p->flags == PAGE_SMALL) ? + SMALL_PAGE_SIZE : + (p->flags == PAGE_MEDIUM) ? + MEDIUM_PAGE_SIZE : + LARGE_PAGE_SIZE); + } + + LIBC_UNLOCK(libc.lock.malloc); + return; + } + p = p->next; + } + + void **orig_ptr_slot = (void **)((uintptr_t)ptr - sizeof(void *)); + void *potential_orig = *orig_ptr_slot; + + p = __malloc_pvec; + while (p) { + if ((uintptr_t)potential_orig >= (uintptr_t)p->heap && + (uintptr_t)potential_orig < + (uintptr_t)(p->heap + + (p->block.size * p->block.count))) { + size_t offset = + (uintptr_t)potential_orig - (uintptr_t)p->heap; + size_t index = offset / p->block.size; + size_t byte_index = index / 8; + size_t bit_index = index % 8; + + LIBC_LOCK(p->lock); + if (p->bitmap[byte_index] & (1 << bit_index)) { + p->bitmap[byte_index] &= ~(1 << bit_index); + p->block.used--; + } + LIBC_UNLOCK(p->lock); + + if (p->block.used == 0) { + if (p->prev) + p->prev->next = p->next; + if (p->next) + p->next->prev = p->prev; + if (p == __malloc_pvec) + __malloc_pvec = p->next; + + munmap(p, (p->flags == PAGE_SMALL) ? + SMALL_PAGE_SIZE : + (p->flags == PAGE_MEDIUM) ? + MEDIUM_PAGE_SIZE : + LARGE_PAGE_SIZE); + } + + LIBC_UNLOCK(libc.lock.malloc); + return; + } + p = p->next; + } + + LIBC_UNLOCK(libc.lock.malloc); +} diff --git a/lib/libc/stdlib/getenv.c b/lib/libc/stdlib/getenv.c new file mode 100644 index 00000000..deb2b5f7 --- /dev/null +++ b/lib/libc/stdlib/getenv.c @@ -0,0 +1,33 @@ +#include <libc.h> +#include <stddef.h> +#include <atomic.h> + +extern char **environ; + +char *getenv(const char *name) +{ + LIBC_LOCK(libc.lock.environ); + + for (char **env = environ; *env; env++) { + char *eq = NULL; + for (char *p = *env; *p; p++) { + if (*p == '=') { + eq = p; + break; + } + if (name[p - *env] != *p) { + break; + } + } + if (eq && name[eq - *env] == '\0') { + LIBC_UNLOCK(libc.lock.environ); + return eq + 1; + } + } + + LIBC_UNLOCK(libc.lock.environ); + + return NULL; +} + +weak_reference(getenv, secure_getenv); diff --git a/lib/libc/stdlib/heapsort.c b/lib/libc/stdlib/heapsort.c new file mode 100644 index 00000000..101720bb --- /dev/null +++ b/lib/libc/stdlib/heapsort.c @@ -0,0 +1,191 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Ronnie Kon at Mindcraft Inc., Kevin Lew and Elmer Yglesias. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <stddef.h> +#include <stdlib.h> + +/* + * Swap two areas of size number of bytes. Although qsort(3) permits random + * blocks of memory to be sorted, sorting pointers is almost certainly the + * common case (and, were it not, could easily be made so). Regardless, it + * isn't worth optimizing; the SWAP's get sped up by the cache, and pointer + * arithmetic gets lost in the time required for comparison function calls. + */ +#define SWAP(a, b, count, size, tmp) \ + { \ + count = size; \ + do { \ + tmp = *a; \ + *a++ = *b; \ + *b++ = tmp; \ + } while (--count); \ + } + +/* Copy one block of size size to another. */ +#define COPY(a, b, count, size, tmp1, tmp2) \ + { \ + count = size; \ + tmp1 = a; \ + tmp2 = b; \ + do { \ + *tmp1++ = *tmp2++; \ + } while (--count); \ + } + +/* + * Build the list into a heap, where a heap is defined such that for + * the records K1 ... KN, Kj/2 >= Kj for 1 <= j/2 <= j <= N. + * + * There two cases. If j == nmemb, select largest of Ki and Kj. If + * j < nmemb, select largest of Ki, Kj and Kj+1. + */ +#define CREATE(initval, nmemb, par_i, child_i, par, child, size, count, tmp) \ + { \ + for (par_i = initval; (child_i = par_i * 2) <= nmemb; \ + par_i = child_i) { \ + child = base + child_i * size; \ + if (child_i < nmemb && \ + compar(child, child + size) < 0) { \ + child += size; \ + ++child_i; \ + } \ + par = base + par_i * size; \ + if (compar(child, par) <= 0) \ + break; \ + SWAP(par, child, count, size, tmp); \ + } \ + } + +/* + * Select the top of the heap and 'heapify'. Since by far the most expensive + * action is the call to the compar function, a considerable optimization + * in the average case can be achieved due to the fact that k, the displaced + * elememt, is ususally quite small, so it would be preferable to first + * heapify, always maintaining the invariant that the larger child is copied + * over its parent's record. + * + * Then, starting from the *bottom* of the heap, finding k's correct place, + * again maintianing the invariant. As a result of the invariant no element + * is 'lost' when k is assigned its correct place in the heap. + * + * The time savings from this optimization are on the order of 15-20% for the + * average case. See Knuth, Vol. 3, page 158, problem 18. + * + * XXX Don't break the #define SELECT line, below. Reiser cpp gets upset. + */ +#define SELECT(par_i, child_i, nmemb, par, child, size, k, count, tmp1, tmp2) \ + { \ + for (par_i = 1; (child_i = par_i * 2) <= nmemb; \ + par_i = child_i) { \ + child = base + child_i * size; \ + if (child_i < nmemb && \ + compar(child, child + size) < 0) { \ + child += size; \ + ++child_i; \ + } \ + par = base + par_i * size; \ + COPY(par, child, count, size, tmp1, tmp2); \ + } \ + for (;;) { \ + child_i = par_i; \ + par_i = child_i / 2; \ + child = base + child_i * size; \ + par = base + par_i * size; \ + if (child_i == 1 || compar(k, par) < 0) { \ + COPY(child, k, count, size, tmp1, tmp2); \ + break; \ + } \ + COPY(child, par, count, size, tmp1, tmp2); \ + } \ + } + +/* + * Heapsort -- Knuth, Vol. 3, page 145. Runs in O (N lg N), both average + * and worst. While heapsort is faster than the worst case of quicksort, + * the BSD quicksort does median selection so that the chance of finding + * a data set that will trigger the worst case is nonexistent. Heapsort's + * only advantage over quicksort is that it requires little additional memory. + */ +int heapsort(void *vbase, size_t nmemb, size_t size, + int (*compar)(const void *, const void *)) +{ + size_t cnt; + size_t i; + size_t j; + size_t l; + char tmp; + char *tmp1; + char *tmp2; + char *base; + char *k; + char *p; + char *t; + + if (nmemb <= 1) { + return (0); + } + + if (!size) { + // errno = EINVAL; + return (-1); + } + + if ((k = malloc(size)) == NULL) { + return (-1); + } + + /* + * Items are numbered from 1 to nmemb, so offset from size bytes + * below the starting address. + */ + base = (char *)vbase - size; + + for (l = nmemb / 2 + 1; --l;) { + CREATE(l, nmemb, i, j, t, p, size, cnt, tmp); + } + + /* + * For each element of the heap, save the largest element into its + * final slot, save the displaced element (k), then recreate the + * heap. + */ + while (nmemb > 1) { + COPY(k, base + nmemb * size, cnt, size, tmp1, tmp2); + COPY(base + nmemb * size, base + size, cnt, size, tmp1, tmp2); + --nmemb; + SELECT(i, j, nmemb, t, p, size, k, cnt, tmp1, tmp2); + } + + free(k); + + return (0); +} diff --git a/lib/libc/stdlib/heapsort_r.c b/lib/libc/stdlib/heapsort_r.c new file mode 100644 index 00000000..645f63b0 --- /dev/null +++ b/lib/libc/stdlib/heapsort_r.c @@ -0,0 +1,191 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Ronnie Kon at Mindcraft Inc., Kevin Lew and Elmer Yglesias. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <stddef.h> +#include <stdlib.h> + +/* + * Swap two areas of size number of bytes. Although qsort(3) permits random + * blocks of memory to be sorted, sorting pointers is almost certainly the + * common case (and, were it not, could easily be made so). Regardless, it + * isn't worth optimizing; the SWAP's get sped up by the cache, and pointer + * arithmetic gets lost in the time required for comparison function calls. + */ +#define SWAP(a, b, count, size, tmp) \ + { \ + count = size; \ + do { \ + tmp = *a; \ + *a++ = *b; \ + *b++ = tmp; \ + } while (--count); \ + } + +/* Copy one block of size size to another. */ +#define COPY(a, b, count, size, tmp1, tmp2) \ + { \ + count = size; \ + tmp1 = a; \ + tmp2 = b; \ + do { \ + *tmp1++ = *tmp2++; \ + } while (--count); \ + } + +/* + * Build the list into a heap, where a heap is defined such that for + * the records K1 ... KN, Kj/2 >= Kj for 1 <= j/2 <= j <= N. + * + * There two cases. If j == nmemb, select largest of Ki and Kj. If + * j < nmemb, select largest of Ki, Kj and Kj+1. + */ +#define CREATE(initval, nmemb, par_i, child_i, par, child, size, count, tmp) \ + { \ + for (par_i = initval; (child_i = par_i * 2) <= nmemb; \ + par_i = child_i) { \ + child = base + child_i * size; \ + if (child_i < nmemb && \ + compar(thunk, child, child + size) < 0) { \ + child += size; \ + ++child_i; \ + } \ + par = base + par_i * size; \ + if (compar(thunk, child, par) <= 0) \ + break; \ + SWAP(par, child, count, size, tmp); \ + } \ + } + +/* + * Select the top of the heap and 'heapify'. Since by far the most expensive + * action is the call to the compar function, a considerable optimization + * in the average case can be achieved due to the fact that k, the displaced + * elememt, is ususally quite small, so it would be preferable to first + * heapify, always maintaining the invariant that the larger child is copied + * over its parent's record. + * + * Then, starting from the *bottom* of the heap, finding k's correct place, + * again maintianing the invariant. As a result of the invariant no element + * is 'lost' when k is assigned its correct place in the heap. + * + * The time savings from this optimization are on the order of 15-20% for the + * average case. See Knuth, Vol. 3, page 158, problem 18. + * + * XXX Don't break the #define SELECT line, below. Reiser cpp gets upset. + */ +#define SELECT(par_i, child_i, nmemb, par, child, size, k, count, tmp1, tmp2) \ + { \ + for (par_i = 1; (child_i = par_i * 2) <= nmemb; \ + par_i = child_i) { \ + child = base + child_i * size; \ + if (child_i < nmemb && \ + compar(thunk, child, child + size) < 0) { \ + child += size; \ + ++child_i; \ + } \ + par = base + par_i * size; \ + COPY(par, child, count, size, tmp1, tmp2); \ + } \ + for (;;) { \ + child_i = par_i; \ + par_i = child_i / 2; \ + child = base + child_i * size; \ + par = base + par_i * size; \ + if (child_i == 1 || compar(thunk, k, par) < 0) { \ + COPY(child, k, count, size, tmp1, tmp2); \ + break; \ + } \ + COPY(child, par, count, size, tmp1, tmp2); \ + } \ + } + +/* + * Heapsort -- Knuth, Vol. 3, page 145. Runs in O (N lg N), both average + * and worst. While heapsort is faster than the worst case of quicksort, + * the BSD quicksort does median selection so that the chance of finding + * a data set that will trigger the worst case is nonexistent. Heapsort's + * only advantage over quicksort is that it requires little additional memory. + */ +int heapsort_r(void *vbase, size_t nmemb, size_t size, void *thunk, + int (*compar)(void *, const void *, const void *)) +{ + size_t cnt; + size_t i; + size_t j; + size_t l; + char tmp; + char *tmp1; + char *tmp2; + char *base; + char *k; + char *p; + char *t; + + if (nmemb <= 1) { + return (0); + } + + if (!size) { + // errno = EINVAL; + return (-1); + } + + if ((k = malloc(size)) == NULL) { + return (-1); + } + + /* + * Items are numbered from 1 to nmemb, so offset from size bytes + * below the starting address. + */ + base = (char *)vbase - size; + + for (l = nmemb / 2 + 1; --l;) { + CREATE(l, nmemb, i, j, t, p, size, cnt, tmp); + } + + /* + * For each element of the heap, save the largest element into its + * final slot, save the displaced element (k), then recreate the + * heap. + */ + while (nmemb > 1) { + COPY(k, base + nmemb * size, cnt, size, tmp1, tmp2); + COPY(base + nmemb * size, base + size, cnt, size, tmp1, tmp2); + --nmemb; + SELECT(i, j, nmemb, t, p, size, k, cnt, tmp1, tmp2); + } + + free(k); + + return (0); +} diff --git a/lib/libc/stdlib/labs.c b/lib/libc/stdlib/labs.c new file mode 100644 index 00000000..1413af3a --- /dev/null +++ b/lib/libc/stdlib/labs.c @@ -0,0 +1,6 @@ +#include <stdlib.h> + +long labs(long i) +{ + return i < 0 ? -i : i; +} diff --git a/lib/libc/stdlib/ldiv.c b/lib/libc/stdlib/ldiv.c new file mode 100644 index 00000000..9fc62b8d --- /dev/null +++ b/lib/libc/stdlib/ldiv.c @@ -0,0 +1,9 @@ +#include <stdlib.h> + +ldiv_t ldiv(long numer, long denom) +{ + ldiv_t result; + result.quot = numer / denom; + result.rem = numer % denom; + return result; +} diff --git a/lib/libc/stdlib/llabs.c b/lib/libc/stdlib/llabs.c new file mode 100644 index 00000000..1fadcb98 --- /dev/null +++ b/lib/libc/stdlib/llabs.c @@ -0,0 +1,6 @@ +#include <stdlib.h> + +long long llabs(long long i) +{ + return (i < 0 ? -i : i); +} diff --git a/lib/libc/stdlib/lldiv.c b/lib/libc/stdlib/lldiv.c new file mode 100644 index 00000000..6df419b3 --- /dev/null +++ b/lib/libc/stdlib/lldiv.c @@ -0,0 +1,9 @@ +#include <stdlib.h> + +lldiv_t lldiv(long long numer, long long denom) +{ + lldiv_t result; + result.quot = numer / denom; + result.rem = numer % denom; + return result; +} diff --git a/lib/libc/stdlib/malloc.c b/lib/libc/stdlib/malloc.c new file mode 100644 index 00000000..3d29e6a8 --- /dev/null +++ b/lib/libc/stdlib/malloc.c @@ -0,0 +1,181 @@ +#include <atomic.h> +#include <features.h> +#include <libc.h> +#include <malloc.h> +#include <linux/errno.h> +#include <stdatomic.h> +#include <stdint.h> +#include <string.h> +#include <sys/mman.h> +#include <unistd.h> + +struct page *__malloc_pvec = NULL; + +static __inline uint32_t get_size_class(size_t size) +{ + uintptr_t minblock_count = (size + (16 - 1)) / 16; + + if (size <= (16 * 64)) { + return (uint32_t)(minblock_count ? minblock_count : 1); + } + + const uint32_t most_significant_bit = + (uint32_t)(63 - (int)__builtin_clzll(minblock_count)); + + const uint32_t subclass_bits = + (minblock_count >> (most_significant_bit - 2)) & 0x03; + + return (uint32_t)((most_significant_bit << 2) + subclass_bits) + 41; +} + +weak void *malloc(size_t size); + +void *malloc(size_t size) +{ + if (size == 0) + return NULL; + + LIBC_LOCK(libc.lock.malloc); + + uint32_t class_index = get_size_class(size); + if (class_index >= + sizeof(global_size_class) / sizeof(global_size_class[0])) { + LIBC_UNLOCK(libc.lock.malloc); + return NULL; + } + const struct class *cls = &global_size_class[class_index]; + + struct page *p = __malloc_pvec; + while (p) { + if (p->flags == PAGE_SMALL && cls->size <= 16 * 64) { + LIBC_LOCK(p->lock); + if (p->block.used < p->block.count && + p->block.size == cls->size) { + for (uint32_t i = 0; i < p->block.count; i++) { + int byte_index = i / 8; + int bit_index = i % 8; + if (!(p->bitmap[byte_index] & + (1 << bit_index))) { + p->bitmap[byte_index] |= + (1 << bit_index); + p->block.used++; + LIBC_UNLOCK(p->lock); + LIBC_UNLOCK(libc.lock.malloc); + if (p->heap == NULL) + return NULL; + return p->heap + + (i * p->block.size); + } + } + } + LIBC_UNLOCK(p->lock); + } else if (p->flags == PAGE_MEDIUM && cls->size > 16 * 64 && + cls->size <= 16 * 8192) { + LIBC_LOCK(p->lock); + if (p->block.used < p->block.count && + p->block.size == cls->size) { + for (uint32_t i = 0; i < p->block.count; i++) { + int byte_index = i / 8; + int bit_index = i % 8; + if (!(p->bitmap[byte_index] & + (1 << bit_index))) { + // Mark block as used + p->bitmap[byte_index] |= + (1 << bit_index); + p->block.used++; + LIBC_UNLOCK(p->lock); + LIBC_UNLOCK(libc.lock.malloc); + if (p->heap == NULL) + return NULL; + return p->heap + + (i * p->block.size); + } + } + } + LIBC_UNLOCK(p->lock); + } else if (p->flags == PAGE_LARGE && cls->size > 16 * 8192) { + LIBC_LOCK(p->lock); + if (p->block.used < p->block.count && + p->block.size == cls->size) { + // Find free block + for (uint32_t i = 0; i < p->block.count; i++) { + int byte_index = i / 8; + int bit_index = i % 8; + if (!(p->bitmap[byte_index] & + (1 << bit_index))) { + p->bitmap[byte_index] |= + (1 << bit_index); + p->block.used++; + LIBC_UNLOCK(p->lock); + LIBC_UNLOCK(libc.lock.malloc); + + if (p->heap == NULL) + return NULL; + return p->heap + + (i * p->block.size); + } + } + } + LIBC_UNLOCK(p->lock); + } + p = p->next; + } + + size_t page_size; + enum { PAGE_TYPE_SMALL, PAGE_TYPE_MEDIUM, PAGE_TYPE_LARGE } page_type; + + if (cls->size <= 16 * 64) { + page_size = SMALL_PAGE_SIZE; + page_type = PAGE_TYPE_SMALL; + } else if (cls->size <= 16 * 8192) { + page_size = MEDIUM_PAGE_SIZE; + page_type = PAGE_TYPE_MEDIUM; + } else { + page_size = LARGE_PAGE_SIZE; + page_type = PAGE_TYPE_LARGE; + } + + size_t bitmap_size = (cls->count + 7) / 8; + void *mem = mmap(NULL, page_size, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + + if (mem == MAP_FAILED) { + LIBC_UNLOCK(libc.lock.malloc); + return NULL; + } + + struct page *new_page = (struct page *)mem; + new_page->flags = (page_type == PAGE_TYPE_SMALL) ? PAGE_SMALL : + (page_type == PAGE_TYPE_MEDIUM) ? PAGE_MEDIUM : + PAGE_LARGE; + + new_page->block.size = cls->size; + new_page->block.used = 0; + new_page->block.count = cls->count; + new_page->bitmap = (uint8_t *)mem + sizeof(struct page); + memset(new_page->bitmap, 0, bitmap_size); + new_page->heap = (uint8_t *)mem + sizeof(struct page) + bitmap_size; + + if (new_page->heap == NULL || new_page->bitmap == NULL) { + munmap(mem, page_size); + LIBC_UNLOCK(libc.lock.malloc); + return NULL; + } + atomic_flag_clear(&new_page->lock); + new_page->next = __malloc_pvec; + new_page->prev = NULL; + + if (__malloc_pvec) { + __malloc_pvec->prev = new_page; + } + + __malloc_pvec = new_page; + + // Mark the first block as used and return it + new_page->bitmap[0] |= 1; + new_page->block.used = 1; + + LIBC_UNLOCK(libc.lock.malloc); + + return new_page->heap; +} diff --git a/lib/libc/stdlib/posix_memalign.c b/lib/libc/stdlib/posix_memalign.c new file mode 100644 index 00000000..a7cbd2a2 --- /dev/null +++ b/lib/libc/stdlib/posix_memalign.c @@ -0,0 +1,31 @@ +#include <errno.h> +#include <stdlib.h> + +int posix_memalign(void **memptr, size_t alignment, size_t size) +{ + if (memptr == NULL) { + return EINVAL; + } + + *memptr = NULL; + + if (alignment < sizeof(void *) || alignment % sizeof(void *) != 0 || + (alignment & (alignment - 1)) != 0) { + return EINVAL; + } + + if (size == 0) { + *memptr = NULL; + return 0; + } + + size_t aligned_size = (size + alignment - 1) & ~(alignment - 1); + + void *ptr = aligned_alloc(alignment, aligned_size); + if (ptr == NULL) { + return ENOMEM; + } + + *memptr = ptr; + return 0; +} diff --git a/lib/libc/stdlib/putenv.c b/lib/libc/stdlib/putenv.c new file mode 100644 index 00000000..b070cc4d --- /dev/null +++ b/lib/libc/stdlib/putenv.c @@ -0,0 +1,17 @@ +#include <stdlib.h> +#include <string.h> + +int putenv(char *string) +{ + const char *const name_end = strchr(string, '='); + + if (name_end) { + char name[name_end - string + 1]; + memcpy(name, string, name_end - string); + name[name_end - string] = '\0'; + return setenv(name, name_end + 1, 1); + } + + unsetenv(string); + return 0; +} diff --git a/lib/libc/stdlib/qsort.c b/lib/libc/stdlib/qsort.c new file mode 100644 index 00000000..896c79a1 --- /dev/null +++ b/lib/libc/stdlib/qsort.c @@ -0,0 +1,12 @@ +#include <stdlib.h> + +static int wrapper(const void *a, const void *b, void *compar) +{ + return ((int (*)(const void *, const void *))compar)(a, b); +} + +void qsort(void *base, size_t nel, size_t width, + int (*compar)(const void *, const void *)) +{ + qsort_r(base, nel, width, wrapper, compar); +} diff --git a/lib/libc/stdlib/qsort_r.c b/lib/libc/stdlib/qsort_r.c new file mode 100644 index 00000000..2fc39a6f --- /dev/null +++ b/lib/libc/stdlib/qsort_r.c @@ -0,0 +1,243 @@ +/* Copyright (C) 2011 by Lynn Ochs + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +/* Minor changes by Rich Felker for integration in musl, 2011-04-27. */ + +/* Smoothsort, an adaptive variant of Heapsort. Memory usage: O(1). + Run time: Worst case O(n log n), close to O(n) in the mostly-sorted case. */ + +#define _BSD_SOURCE +#include <stdlib.h> +#include <string.h> + +#define ntz(x) __builtin_ctzl((x)) + +typedef int (*cmpfun)(const void *, const void *, void *); + +static inline int pntz(size_t p[2]) +{ + int r = ntz(p[0] - 1); + if (r != 0 || + (r = 8 * sizeof(size_t) + ntz(p[1])) != 8 * sizeof(size_t)) { + return r; + } + return 0; +} + +static void cycle(size_t width, unsigned char *ar[], int n) +{ + unsigned char tmp[256]; + size_t l; + int i; + + if (n < 2) { + return; + } + + ar[n] = tmp; + while (width) { + l = sizeof(tmp) < width ? sizeof(tmp) : width; + memcpy(ar[n], ar[0], l); + for (i = 0; i < n; i++) { + memcpy(ar[i], ar[i + 1], l); + ar[i] += l; + } + width -= l; + } + ar[n] = NULL; +} + +/* shl() and shr() need n > 0 */ +static inline void shl(size_t p[2], int n) +{ + if (n >= 8 * sizeof(size_t)) { + n -= 8 * sizeof(size_t); + p[1] = p[0]; + p[0] = 0; + } + p[1] <<= n; + p[1] |= (n < sizeof(size_t) * 8) ? p[0] >> (sizeof(size_t) * 8 - n) : 0; + p[0] <<= n; +} + +static inline void shr(size_t p[2], int n) +{ + size_t bits = sizeof(size_t) * 8; + + if (n >= 8 * sizeof(size_t)) { + n -= 8 * sizeof(size_t); + p[0] = p[1]; + p[1] = 0; + } + + p[0] >>= n; + p[0] |= (n > 0 && n < bits) ? p[1] << (bits - n) : 0; + p[1] >>= n; +} + +static void sift(unsigned char *head, size_t width, cmpfun cmp, void *arg, + int pshift, size_t lp[]) +{ + unsigned char *rt, *lf; + unsigned char *ar[14 * sizeof(size_t) + 1]; + int i = 1; + + ar[0] = head; + while (pshift > 1) { + rt = head - width; + lf = head - width - lp[pshift - 2]; + + if (cmp(ar[0], lf, arg) >= 0 && cmp(ar[0], rt, arg) >= 0) { + break; + } + if (cmp(lf, rt, arg) >= 0) { + ar[i++] = lf; + head = lf; + pshift -= 1; + } else { + ar[i++] = rt; + head = rt; + pshift -= 2; + } + } + cycle(width, ar, i); +} + +static void trinkle(unsigned char *head, size_t width, cmpfun cmp, void *arg, + size_t pp[2], int pshift, int trusty, size_t lp[], + int max_lp_index) +{ + unsigned char *stepson, *rt, *lf; + size_t p[2]; + unsigned char *ar[14 * sizeof(size_t) + 1]; + int i = 1; + int trail; + + p[0] = pp[0]; + p[1] = pp[1]; + + ar[0] = head; + while (p[0] != 1 || p[1] != 0) { + if (pshift < 0 || pshift > max_lp_index || pshift >= 64) + break; + + stepson = head - lp[pshift]; + if (cmp(stepson, ar[0], arg) <= 0) { + break; + } + if (!trusty && pshift > 1 && pshift - 2 >= 0 && + pshift - 2 <= max_lp_index) { + rt = head - width; + lf = head - width - lp[pshift - 2]; + if (cmp(rt, stepson, arg) >= 0 || + cmp(lf, stepson, arg) >= 0) { + break; + } + } + + ar[i++] = stepson; + head = stepson; + trail = pntz(p); + shr(p, trail); + pshift += trail; + trusty = 0; + } + if (!trusty) { + cycle(width, ar, i); + sift(head, width, cmp, arg, pshift, lp); + } +} + +void qsort_r(void *base, size_t nel, size_t width, cmpfun cmp, void *arg) +{ + size_t lp[64]; + size_t i, size = width * nel; + unsigned char *head, *high; + size_t p[2] = { 1, 0 }; + int pshift = 1; + int trail; + int max_lp_index; + + if (!size) + return; + + head = base; + high = head + size - width; + + /* Precompute Leonardo numbers, scaled by element width */ + for (lp[0] = lp[1] = width, i = 2; + (lp[i] = lp[i - 2] + lp[i - 1] + width) < size && i < 63; i++) + ; + max_lp_index = i - 1; + + while (head < high) { + if ((p[0] & 3) == 3) { + sift(head, width, cmp, arg, pshift, lp); + shr(p, 2); + pshift += 2; + } else { + if (pshift - 1 >= 0 && pshift - 1 <= max_lp_index && + lp[pshift - 1] >= high - head) { + trinkle(head, width, cmp, arg, p, pshift, 0, lp, + max_lp_index); + } else { + sift(head, width, cmp, arg, pshift, lp); + } + + if (pshift == 1) { + shl(p, 1); + pshift = 0; + } else { + shl(p, pshift - 1); + pshift = 1; + } + } + + p[0] |= 1; + head += width; + } + + trinkle(head, width, cmp, arg, p, pshift, 0, lp, max_lp_index); + + while (pshift != 1 || p[0] != 1 || p[1] != 0) { + if (pshift <= 1) { + trail = pntz(p); + shr(p, trail); + pshift += trail; + } else { + shl(p, 2); + pshift -= 2; + p[0] ^= 7; + shr(p, 1); + if (pshift >= 0 && pshift <= max_lp_index && + pshift < 64) { + trinkle(head - lp[pshift] - width, width, cmp, + arg, p, pshift + 1, 1, lp, + max_lp_index); + } + shl(p, 1); + p[0] |= 1; + trinkle(head - width, width, cmp, arg, p, pshift, 1, lp, + max_lp_index); + } + head -= width; + } +} diff --git a/lib/libc/stdlib/quick_exit.c b/lib/libc/stdlib/quick_exit.c new file mode 100644 index 00000000..15587d17 --- /dev/null +++ b/lib/libc/stdlib/quick_exit.c @@ -0,0 +1,6 @@ +#include <stdlib.h> + +_Noreturn void quick_exit(int status) +{ + _Exit(status); +} diff --git a/lib/libc/stdlib/rand.c b/lib/libc/stdlib/rand.c new file mode 100644 index 00000000..878aa0e2 --- /dev/null +++ b/lib/libc/stdlib/rand.c @@ -0,0 +1,182 @@ +/* Written in 2018 by David Blackman and Sebastiano Vigna (vigna@acm.org) + +To the extent possible under law, the author has dedicated all copyright +and related and neighboring rights to this software to the public domain +worldwide. + +Permission to use, copy, modify, and/or distribute this software for any +purpose with or without fee is hereby granted. + +THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR +ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR +IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ + +#include <stdlib.h> +#include <stdint.h> + +#define UINT64_C(c) ((uint64_t)(c##ULL)) + +typedef struct { + uint64_t s[4]; +} xoshiro256_state; + +typedef struct { + uint64_t s[4]; +} erand48_state; + +static xoshiro256_state __xoshiro256_state; +static erand48_state __erand48_state; + +/* This is xoshiro256** 1.0, one of our all-purpose, rock-solid + generators. It has excellent (sub-ns) speed, a state (256 bits) that is + large enough for any parallel application, and it passes all tests we + are aware of. + + For generating just floating-point numbers, xoshiro256+ is even faster. + + The state must be seeded so that it is not everywhere zero. If you have + a 64-bit seed, we suggest to seed a splitmix64 generator and use its + output to fill s. */ + +static inline uint64_t rotl(const uint64_t x, int k) +{ + return (x << k) | (x >> (64 - k)); +} + +uint64_t xoshiro256_next(xoshiro256_state *st) +{ + const uint64_t result = rotl(st->s[1] * 5, 7) * 9; + + const uint64_t t = st->s[1] << 17; + + st->s[2] ^= st->s[0]; + st->s[3] ^= st->s[1]; + st->s[1] ^= st->s[2]; + st->s[0] ^= st->s[3]; + + st->s[2] ^= t; + + st->s[3] = rotl(st->s[3], 45); + + return result; +} + +/* Written in 2015 by Sebastiano Vigna (vigna@acm.org) + +To the extent possible under law, the author has dedicated all copyright +and related and neighboring rights to this software to the public domain +worldwide. This software is distributed without any warranty. + +See <http://creativecommons.org/publicdomain/zero/1.0/>. */ + +/* This is a fixed-increment version of Java 8's SplittableRandom generator + See http://dx.doi.org/10.1145/2714064.2660195 and + http://docs.oracle.com/javase/8/docs/api/java/util/SplittableRandom.html + + It is a very fast generator passing BigCrush, and it can be useful if + for some reason you absolutely want 64 bits of state; otherwise, we + rather suggest to use a xoroshiro128+ (for moderately parallel + computations) or xorshift1024* (for massively parallel computations) + generator. */ + +uint64_t splitmix64(uint64_t *x) +{ + uint64_t z = (*x += UINT64_C(0x9E3779B97F4A7C15)); + z = (z ^ (z >> 30)) * UINT64_C(0xBF58476D1CE4E5B9); + z = (z ^ (z >> 27)) * UINT64_C(0x94D049BB133111EB); + return z ^ (z >> 31); +} + +void srand(unsigned int seed) +{ + uint64_t z = (uint64_t)seed; + __xoshiro256_state.s[0] = splitmix64(&z); + __xoshiro256_state.s[1] = splitmix64(&z); + __xoshiro256_state.s[2] = splitmix64(&z); + __xoshiro256_state.s[3] = splitmix64(&z); +} + +int rand(void) +{ + return (int)(xoshiro256_next(&__xoshiro256_state) & (uint64_t)RAND_MAX); +} + +void srandom(unsigned seed) +{ + srand(seed); +} + +long random(void) +{ + return (long)rand(); +} + +void srand48(long seedval) +{ + uint64_t z = (uint64_t)seedval; + __erand48_state.s[0] = splitmix64(&z); + __erand48_state.s[1] = splitmix64(&z); + __erand48_state.s[2] = splitmix64(&z); + __erand48_state.s[3] = splitmix64(&z); +} + +double drand48(void) +{ + uint64_t v = xoshiro256_next((xoshiro256_state *)&__erand48_state); + return (double)(v >> 11) * (1.0 / 9007199254740992.0); // 53-bit + // mantissa +} + +long lrand48(void) +{ + uint64_t v = xoshiro256_next((xoshiro256_state *)&__erand48_state); + return (long)(v & 0x7FFFFFFF); // 31-bit +} + +long mrand48(void) +{ + uint64_t v = xoshiro256_next((xoshiro256_state *)&__erand48_state); + return (long)(v & 0xFFFFFFFF); // 32-bit signed +} + +double erand48(unsigned short xsubi[3]) +{ + xoshiro256_state st = { 0 }; + for (int i = 0; i < 3; i++) + st.s[i] = xsubi[i]; + st.s[3] = 0xdeadbeef; + uint64_t v = xoshiro256_next(&st); + return (double)(v >> 11) * (1.0 / 9007199254740992.0); +} + +long nrand48(unsigned short xsubi[3]) +{ + xoshiro256_state st = { 0 }; + for (int i = 0; i < 3; i++) + st.s[i] = xsubi[i]; + st.s[3] = 0xdeadbeef; + uint64_t v = xoshiro256_next(&st); + return (long)(v & 0x7FFFFFFF); +} + +long jrand48(unsigned short xsubi[3]) +{ + xoshiro256_state st = { 0 }; + for (int i = 0; i < 3; i++) + st.s[i] = xsubi[i]; + st.s[3] = 0xdeadbeef; + uint64_t v = xoshiro256_next(&st); + return (long)(v & 0xFFFFFFFF); +} + +unsigned short *seed48(unsigned short seed16v[3]) +{ + for (int i = 0; i < 3; i++) + __erand48_state.s[i] = seed16v[i]; + __erand48_state.s[3] = 0xdeadbeef; + return seed16v; +} diff --git a/lib/libc/stdlib/realloc.c b/lib/libc/stdlib/realloc.c new file mode 100644 index 00000000..d90af70d --- /dev/null +++ b/lib/libc/stdlib/realloc.c @@ -0,0 +1,47 @@ +#include <errno.h> +#include <string.h> +#include <atomic.h> +#include <libc.h> +#include <malloc.h> +#include <linux/errno.h> +#include <stdlib.h> + +void *realloc(void *ptr, size_t size) +{ + if (ptr == NULL) { + return malloc(size); + } + if (size == 0) { + free(ptr); + return NULL; + } + + LIBC_LOCK(libc.lock.malloc); + + struct page *p = __malloc_pvec; + while (p) { + if ((uintptr_t)ptr >= (uintptr_t)p->heap && + (uintptr_t)ptr < (uintptr_t)(p->heap + (p->block.size * + p->block.count))) { + size_t old_size = p->block.size; + LIBC_UNLOCK(libc.lock.malloc); + + if (size <= old_size) { + return ptr; + } else { + void *new_ptr = malloc(size); + if (new_ptr) { + memcpy(new_ptr, ptr, old_size); + free(ptr); + } + return new_ptr; + } + } + p = p->next; + } + + LIBC_UNLOCK(libc.lock.malloc); + + errno = EINVAL; + return NULL; +} diff --git a/lib/libc/stdlib/reallocarray.c b/lib/libc/stdlib/reallocarray.c new file mode 100644 index 00000000..4dd1a6c8 --- /dev/null +++ b/lib/libc/stdlib/reallocarray.c @@ -0,0 +1,14 @@ +#include <stdlib.h> +#include <errno.h> +#include <linux/errno.h> +#include <malloc.h> + +void *reallocarray(void *ptr, size_t nmemb, size_t size) +{ + size_t total = nmemb * size; + if (nmemb != 0 && total / nmemb != size) { + errno = ENOMEM; + return NULL; + } + return realloc(ptr, total); +} diff --git a/lib/libc/stdlib/setenv.c b/lib/libc/stdlib/setenv.c new file mode 100644 index 00000000..1464fc1b --- /dev/null +++ b/lib/libc/stdlib/setenv.c @@ -0,0 +1,58 @@ +#include <libc.h> +#include <atomic.h> +#include <stdlib.h> +#include <string.h> + +extern char **environ; + +int setenv(const char *var, const char *value, int overwrite) +{ + char **env = environ; + size_t var_len = strlen(var); + + for (; *env; env++) { + char *eq = strchr(*env, '='); + if (eq && ((size_t)(eq - *env) == var_len) && + !strncmp(*env, var, var_len)) { + if (overwrite) { + size_t value_len = strlen(value); + char *new_env = + malloc(var_len + 1 + value_len + 1); + if (!new_env) + return -1; + memcpy(new_env, var, var_len); + new_env[var_len] = '='; + memcpy(new_env + var_len + 1, value, + value_len + 1); + *env = new_env; + } + return 0; + } + } + + size_t env_count = 0; + while (environ[env_count]) + env_count++; + + char **new_envp = realloc(environ, (env_count + 2) * sizeof(char *)); + if (!new_envp) + return -1; + + size_t value_len = strlen(value); + char *new_var = malloc(var_len + 1 + value_len + 1); + if (!new_var) + return -1; + + memcpy(new_var, var, var_len); + new_var[var_len] = '='; + memcpy(new_var + var_len + 1, value, value_len + 1); + + new_envp[env_count] = new_var; + new_envp[env_count + 1] = NULL; + LIBC_LOCK(libc.lock.environ); + environ = new_envp; + LIBC_UNLOCK(libc.lock.environ); + libc.flags |= LIBC_ENVP_TOUCHED; + + return 0; +} diff --git a/lib/libc/stdlib/strtox.c b/lib/libc/stdlib/strtox.c new file mode 100644 index 00000000..9d72954a --- /dev/null +++ b/lib/libc/stdlib/strtox.c @@ -0,0 +1,270 @@ +#include <ctype.h> +#include <float.h> +#include <errno.h> +#include <strings.h> +#include <limits.h> +#include <math.h> +#include <stdlib.h> + +static unsigned long long +__scanint(const char *s, int base, unsigned long long lim, int *neg, char **end) +{ + unsigned long long res = 0; + int digit, any = 0; + + while (isspace((unsigned char)*s)) + s++; + + *neg = 0; + if (*s == '+' || *s == '-') { + *neg = (*s == '-'); + s++; + } + + if ((base == 0 || base == 16) && s[0] == '0' && + (s[1] == 'x' || s[1] == 'X')) { + base = 16; + s += 2; + } else if (base == 0 && *s == '0') { + base = 8; + s++; + } else if (base == 0) { + base = 10; + } + + for (; *s; s++) { + unsigned char c = *s; + if (isdigit(c)) + digit = c - '0'; + else if (isalpha(c)) + digit = toupper(c) - 'A' + 10; + else + break; + + if (digit >= base) + break; + if (res > (lim - digit) / base) { + errno = ERANGE; + res = lim; + any = 1; + while (1) { + if (isalnum((unsigned char)*++s) == 0) + break; + } + break; + } + res = res * base + digit; + any = 1; + } + + if (end) + *end = (char *)(any ? s : s - 1); + + return res; +} + +static long double __scanfloat(const char *s, char **end) +{ + long double value = 0.0; + long double frac = 0.0; + long double sign = 1.0; + long double scale = 1.0; + int exp_sign = 1; + long exp_val = 0; + int got_digit = 0; + + while (isspace((unsigned char)*s)) + s++; + + if (*s == '+' || *s == '-') { + if (*s == '-') + sign = -1.0; + s++; + } + + if (strncasecmp(s, "inf", 3) == 0) { + s += 3; + if (strncasecmp(s, "inity", 5) == 0) + s += 5; + if (end) + *end = (char *)s; + return sign * INFINITY; + } + if (strncasecmp(s, "nan", 3) == 0) { + s += 3; + if (*s == '(') { + s++; + while (*s && *s != ')') + s++; + if (*s == ')') + s++; + } + if (end) + *end = (char *)s; + return NAN; + } + + while (isdigit((unsigned char)*s)) { + value = value * 10.0 + (*s - '0'); + s++; + got_digit = 1; + } + + if (*s == '.') { + s++; + while (isdigit((unsigned char)*s)) { + value = value * 10.0 + (*s - '0'); + scale *= 10.0; + s++; + got_digit = 1; + } + } + + if (!got_digit) { + if (end) + *end = (char *)s; + return 0.0; + } + + value = value / scale; + + if (*s == 'e' || *s == 'E') { + const char *p = ++s; + if (*p == '+' || *p == '-') { + exp_sign = (*p == '-') ? -1 : 1; + p++; + } + while (isdigit((unsigned char)*p)) { + exp_val = exp_val * 10 + (*p - '0'); + p++; + } + s = p; + value *= powl(10.0, exp_sign * exp_val); + } + + if (end) + *end = (char *)s; + + return sign * value; +} + +long strtol(const char *restrict nptr, char **restrict endptr, int base) +{ + int neg; + unsigned long long lim; + unsigned long long v; + + const char *p = nptr; + while (isspace((unsigned char)*p)) + p++; + int is_neg = (*p == '-'); + lim = is_neg ? (unsigned long long)LONG_MAX + 1ULL : LONG_MAX; + + v = __scanint(nptr, base, lim, &neg, endptr); + + if (neg) + return (v == lim) ? LONG_MIN : -(long)v; + else + return (v > LONG_MAX) ? (errno = ERANGE, LONG_MAX) : (long)v; +} + +long long strtoll(const char *restrict nptr, char **restrict endptr, int base) +{ + int neg; + unsigned long long lim; + unsigned long long v; + + const char *p = nptr; + while (isspace((unsigned char)*p)) + p++; + int is_neg = (*p == '-'); + + lim = is_neg ? (unsigned long long)LLONG_MAX + 1ULL : LLONG_MAX; + + v = __scanint(nptr, base, lim, &neg, endptr); + + if (neg) { + if (v == lim) + return LLONG_MIN; + else + return -(long long)v; + } else { + if (v > LLONG_MAX) { + errno = ERANGE; + return LLONG_MAX; + } else + return (long long)v; + } +} + +unsigned long strtoul(const char *restrict nptr, char **restrict endptr, + int base) +{ + int neg; + unsigned long long v; + + v = __scanint(nptr, base, ULONG_MAX, &neg, endptr); + + if (neg) { + errno = EINVAL; + return 0; + } + + if (v > ULONG_MAX) { + errno = ERANGE; + return ULONG_MAX; + } + + return (unsigned long)v; +} + +unsigned long long strtoull(const char *restrict nptr, char **restrict endptr, + int base) +{ + int neg; + unsigned long long v; + + v = __scanint(nptr, base, ULLONG_MAX, &neg, endptr); + + if (neg) { + errno = EINVAL; + return 0; + } + + if (v > ULLONG_MAX) { + errno = ERANGE; + return ULLONG_MAX; + } + + return v; +} + +float strtof(const char *restrict nptr, char **restrict endptr) +{ + long double val = __scanfloat(nptr, endptr); + + if (val > FLT_MAX) { + errno = ERANGE; + return HUGE_VALF; + } else if (val < -FLT_MAX) { + errno = ERANGE; + return -HUGE_VALF; + } + + return (float)val; +} + +long double strtold(const char *restrict nptr, char **restrict endptr) +{ + long double val = __scanfloat(nptr, endptr); + + if (val > LDBL_MAX) { + errno = ERANGE; + return LDBL_MAX; + } else if (val < -LDBL_MAX) { + errno = ERANGE; + return -LDBL_MAX; + } + + return val; +} diff --git a/lib/libc/stdlib/system.c b/lib/libc/stdlib/system.c new file mode 100644 index 00000000..4f560ce1 --- /dev/null +++ b/lib/libc/stdlib/system.c @@ -0,0 +1,7 @@ +#include <stdlib.h> + +int system(const char *command) +{ + // TODO + return 0; +} diff --git a/lib/libc/stdlib/unsetenv.c b/lib/libc/stdlib/unsetenv.c new file mode 100644 index 00000000..4eb11d57 --- /dev/null +++ b/lib/libc/stdlib/unsetenv.c @@ -0,0 +1,13 @@ +#include <errno.h> +#include <string.h> +#include <stdlib.h> + +int unsetenv(const char *name) +{ + if (name == NULL || *name == '\0' || strchr(name, '=')) { + errno = EINVAL; + return -1; + } + + return setenv(name, NULL, 1); +} diff --git a/lib/libc/stdlib/wctomb.c b/lib/libc/stdlib/wctomb.c new file mode 100644 index 00000000..d971ffae --- /dev/null +++ b/lib/libc/stdlib/wctomb.c @@ -0,0 +1,9 @@ +#include <stdlib.h> +#include <wchar.h> + +int wctomb(char *s, wchar_t wc) +{ + if (s == NULL) + return 0; + return wcrtomb(s, wc, 0); +} diff --git a/lib/libc/string/memccpy.c b/lib/libc/string/memccpy.c new file mode 100644 index 00000000..29828182 --- /dev/null +++ b/lib/libc/string/memccpy.c @@ -0,0 +1,13 @@ +#include <stddef.h> + +void *memccpy(void *restrict s1, const void *restrict s2, int c, size_t n) +{ + const unsigned char *p2 = s2; + unsigned char *p1 = s1; + while (n--) { + if (*p2 == (unsigned char)c) + return p1 + 1; + *p1++ = *p2++; + } + return NULL; +} diff --git a/lib/libc/string/memchr.c b/lib/libc/string/memchr.c new file mode 100644 index 00000000..38850aed --- /dev/null +++ b/lib/libc/string/memchr.c @@ -0,0 +1,12 @@ +#include <stddef.h> + +void *memchr(const void *s, int c, size_t n) +{ + const unsigned char *p = s; + while (n--) { + if (*p == (unsigned char)c) + return (void *)p; + p++; + } + return NULL; +} diff --git a/lib/libc/string/memcmp.c b/lib/libc/string/memcmp.c new file mode 100644 index 00000000..5efb282f --- /dev/null +++ b/lib/libc/string/memcmp.c @@ -0,0 +1,14 @@ +#include <stddef.h> + +int memcmp(const void *s1, const void *s2, size_t n) +{ + const unsigned char *p1 = s1; + const unsigned char *p2 = s2; + while (n--) { + if (*p1 != *p2) + return *p1 - *p2; + p1++; + p2++; + } + return 0; +} diff --git a/lib/libc/string/memcpy.c b/lib/libc/string/memcpy.c new file mode 100644 index 00000000..505cc622 --- /dev/null +++ b/lib/libc/string/memcpy.c @@ -0,0 +1,16 @@ +#include <string.h> +#include <features.h> + +weak void *memcpy(void *restrict s1, const void *restrict s2, size_t n); + +void *memcpy(void *restrict s1, const void *restrict s2, size_t n) +{ + unsigned char *dest = (unsigned char *)s1; + const unsigned char *src = (const unsigned char *)s2; + + while (n--) { + *dest++ = *src++; + } + + return s1; +} diff --git a/lib/libc/string/memmem.c b/lib/libc/string/memmem.c new file mode 100644 index 00000000..7a450cf7 --- /dev/null +++ b/lib/libc/string/memmem.c @@ -0,0 +1,15 @@ +#include <string.h> + +void *memmem(const void *haystack, size_t haystacklen, const void *needle, + size_t needlelen) +{ + const unsigned char *p1 = haystack; + const unsigned char *p2 = needle; + while (haystacklen >= needlelen) { + if (!memcmp(p1, p2, needlelen)) + return (void *)p1; + p1++; + haystacklen--; + } + return NULL; +} diff --git a/lib/libc/string/memmove.c b/lib/libc/string/memmove.c new file mode 100644 index 00000000..88968185 --- /dev/null +++ b/lib/libc/string/memmove.c @@ -0,0 +1,21 @@ +#include <stddef.h> +#include <stdint.h> + +void *memmove(void *dst, const void *src, size_t n) +{ + uint8_t *d = dst; + const uint8_t *s = src; + + if (d == s || n == 0) + return dst; + + if ((uintptr_t)d < (uintptr_t)s) { + for (size_t i = 0; i < n; i++) + d[i] = s[i]; + } else { + for (size_t i = n; i != 0; i--) + d[i - 1] = s[i - 1]; + } + + return dst; +} diff --git a/lib/libc/string/memset.c b/lib/libc/string/memset.c new file mode 100644 index 00000000..da969d16 --- /dev/null +++ b/lib/libc/string/memset.c @@ -0,0 +1,10 @@ +#include <string.h> + +void *memset(void *s, int c, size_t n) +{ + unsigned char *p = s; + while (n--) { + *p++ = (unsigned char)c; + } + return s; +} diff --git a/lib/libc/string/stpcpy.c b/lib/libc/string/stpcpy.c new file mode 100644 index 00000000..04c3a17f --- /dev/null +++ b/lib/libc/string/stpcpy.c @@ -0,0 +1,8 @@ +#include <string.h> + +char *stpcpy(char *restrict s1, const char *restrict s2) +{ + while ((*s1++ = *s2++)) + ; + return s1 - 1; +} diff --git a/lib/libc/string/stpncpy.c b/lib/libc/string/stpncpy.c new file mode 100644 index 00000000..8f7ebd01 --- /dev/null +++ b/lib/libc/string/stpncpy.c @@ -0,0 +1,14 @@ +#include <stddef.h> + +char *strncpy(char *restrict s1, const char *restrict s2, size_t n) +{ + char *d = s1; + + while (n-- && *s2) + *d++ = *s2++; + + while (n--) + *d++ = '\0'; + + return s1; +} diff --git a/lib/libc/string/strcat.c b/lib/libc/string/strcat.c new file mode 100644 index 00000000..6caf8c78 --- /dev/null +++ b/lib/libc/string/strcat.c @@ -0,0 +1,14 @@ +char *strcat(char *restrict s1, const char *restrict s2) +{ + char *d = s1; + + while (*d) + d++; + + while (*s2) + *d++ = *s2++; + + *d = '\0'; + + return s1; +} diff --git a/lib/libc/string/strchr.c b/lib/libc/string/strchr.c new file mode 100644 index 00000000..db632a2e --- /dev/null +++ b/lib/libc/string/strchr.c @@ -0,0 +1,13 @@ +#include <string.h> + +char *strchr(const char *s, int c) +{ + while (*s) { + if (*s == (char)c) + return (char *)s; + s++; + } + if (c == 0) + return (char *)s; + return NULL; +} diff --git a/lib/libc/string/strcmp.c b/lib/libc/string/strcmp.c new file mode 100644 index 00000000..836522f1 --- /dev/null +++ b/lib/libc/string/strcmp.c @@ -0,0 +1,23 @@ +#include <stddef.h> + +int strcmp(const char *s1, const char *s2) +{ + const unsigned char *p1 = (const unsigned char *)s1; + const unsigned char *p2 = (const unsigned char *)s2; + + if (p1 == NULL && p2 == NULL) + return 0; + + if (p1 == NULL) + return -1; + + if (p2 == NULL) + return 1; + + while (*p1 == *p2 && *p1 != '\0') { + p1++; + p2++; + } + + return *p1 - *p2; +} diff --git a/lib/libc/string/strcoll.c b/lib/libc/string/strcoll.c new file mode 100644 index 00000000..6b2e532a --- /dev/null +++ b/lib/libc/string/strcoll.c @@ -0,0 +1,13 @@ +#include <libc.h> +#include <string.h> +#include <locale.h> + +int strcoll(const char *s1, const char *s2) +{ + return strcmp(s1, s2); +} + +weak int strcoll_l(const char *s1, const char *s2, locale_t unused locale) +{ + return strcoll(s1, s2); +} diff --git a/lib/libc/string/strcpy.c b/lib/libc/string/strcpy.c new file mode 100644 index 00000000..8e1dab69 --- /dev/null +++ b/lib/libc/string/strcpy.c @@ -0,0 +1,7 @@ +char *strcpy(char *restrict s1, const char *restrict s2) +{ + char *p = s1; + while ((*p++ = *s2++) != '\0') + ; + return s1; +} diff --git a/lib/libc/string/strcspn.c b/lib/libc/string/strcspn.c new file mode 100644 index 00000000..9f1f2bcd --- /dev/null +++ b/lib/libc/string/strcspn.c @@ -0,0 +1,11 @@ +#include <string.h> + +size_t strcspn(const char *s1, const char *s2) +{ + size_t len = 0; + while (*s1 != '\0' && strchr(s2, *s1) == NULL) { + s1++; + len++; + } + return len; +} diff --git a/lib/libc/string/strdup.c b/lib/libc/string/strdup.c new file mode 100644 index 00000000..1210bfdc --- /dev/null +++ b/lib/libc/string/strdup.c @@ -0,0 +1,12 @@ +#include <stdlib.h> +#include <string.h> + +char *strdup(const char *s) +{ + size_t len = strlen(s) + 1; + char *dup = malloc(len); + if (dup == NULL) + return NULL; + memcpy(dup, s, len); + return dup; +} diff --git a/lib/libc/string/strerror.c b/lib/libc/string/strerror.c new file mode 100644 index 00000000..1d5903cb --- /dev/null +++ b/lib/libc/string/strerror.c @@ -0,0 +1,125 @@ +#include <libc.h> +#include <errno.h> +#include <string.h> +#include <locale.h> + +char *strerror(int errnum) +{ + char *table[] = { + [0] = "No error information", + [EILSEQ] = "Illegal byte sequence", + [EDOM] = "Domain error", + [ERANGE] = "Result not representable", + [ENOTTY] = "Not a tty", + [EACCES] = "Permission denied", + [EPERM] = "Operation not permitted", + [ENOENT] = "No such file or directory", + [ESRCH] = "No such process", + [EEXIST] = "File exists", + [EOVERFLOW] = "Value too large for data type", + [ENOSPC] = "No space left on device", + [ENOMEM] = "Out of memory", + [EBUSY] = "Resource busy", + [EINTR] = "Interrupted system call", + [EAGAIN] = "Resource temporarily unavailable", + [ESPIPE] = "Invalid seek", + [EXDEV] = "Cross-device link", + [EROFS] = "Read-only file system", + [ENOTEMPTY] = "Directory not empty", + [ECONNRESET] = "Connection reset by peer", + [ETIMEDOUT] = "Operation timed out", + [ECONNREFUSED] = "Connection refused", + [EHOSTDOWN] = "Host is down", + [EHOSTUNREACH] = "Host is unreachable", + [EADDRINUSE] = "Address in use", + [EPIPE] = "Broken pipe", + [EIO] = "I/O error", + [ENXIO] = "No such device or address", + [ENOTBLK] = "Block device required", + [ENODEV] = "No such device", + [ENOTDIR] = "Not a directory", + [EISDIR] = "Is a directory", + [ETXTBSY] = "Text file busy", + [ENOEXEC] = "Exec format error", + [EINVAL] = "Invalid argument", + [E2BIG] = "Argument list too long", + [ELOOP] = "Symbolic link loop", + [ENAMETOOLONG] = "Filename too long", + [ENFILE] = "Too many open files in system", + [EMFILE] = "No file descriptors available", + [EBADF] = "Bad file descriptor", + [ECHILD] = "No child process", + [EFAULT] = "Bad address", + [EFBIG] = "File too large", + [EMLINK] = "Too many links", + [ENOLCK] = "No locks available", + [EDEADLK] = "Resource deadlock would occur", + [ENOTRECOVERABLE] = "State not recoverable", + [EOWNERDEAD] = "Previous owner died", + [ECANCELED] = "Operation canceled", + [ENOSYS] = "Function not implemented", + [ENOMSG] = "No message of desired type", + [EIDRM] = "Identifier removed", + [ENOSTR] = "Device not a stream", + [ENODATA] = "No data available", + [ETIME] = "Device timeout", + [ENOSR] = "Out of streams resources", + [ENOLINK] = "Link has been severed", + [EPROTO] = "Protocol error", + [EBADMSG] = "Bad message", + [EBADFD] = "File descriptor in bad state", + [ENOTSOCK] = "Not a socket", + [EDESTADDRREQ] = "Destination address required", + [EMSGSIZE] = "Message too large", + [EPROTOTYPE] = "Protocol wrong type for socket", + [ENOPROTOOPT] = "Protocol not available", + [EPROTONOSUPPORT] = "Not supported", + [ESOCKTNOSUPPORT] = "Type not supported", + [ENOTSUP] = "Not supported", + [EPFNOSUPPORT] = "Protocol family not supported", + [EAFNOSUPPORT] = "Address family not supported by protocol", + [EADDRNOTAVAIL] = "Address not available", + [ENETDOWN] = "Network is down", + [ENETUNREACH] = "Network unreachable", + [ENETRESET] = "Connection reset by network", + [ECONNABORTED] = "Connection aborted", + [ENOBUFS] = "No buffer space available", + [EISCONN] = "Socket is connected", + [ENOTCONN] = "Socket not connected", + [ESHUTDOWN] = "Cannot send after socket shutdown", + [EALREADY] = "Operation already in progress", + [EINPROGRESS] = "Operation in progress", + [ESTALE] = "Stale file handle", + [EUCLEAN] = "Data consistency error", + [ENAVAIL] = "Resource not available", + [EREMOTEIO] = "Remote I/O error", + [EDQUOT] = "Quota exceeded", + [ENOMEDIUM] = "No medium found", + [EMEDIUMTYPE] = "Wrong medium type", + [EMULTIHOP] = "Multihop attempted", + [ENOKEY] = "Required key not available", + [EKEYEXPIRED] = "Key has expired", + [EKEYREVOKED] = "Key has been revoked", + [EKEYREJECTED] = "Key was rejected by service", + }; + + return table[errnum]; +} + +int strerror_r(int errnum, char *buf, size_t buflen) +{ + const char *msg = strerror(errnum); + size_t msglen = strlen(msg) + 1; + + if (buflen < msglen) { + return ERANGE; + } + + memcpy(buf, msg, msglen); + return 0; +} + +weak char *strerror_l(int errnum, locale_t unused locale) +{ + return strerror(errnum); +} diff --git a/lib/libc/string/strlcat.c b/lib/libc/string/strlcat.c new file mode 100644 index 00000000..a2c333e0 --- /dev/null +++ b/lib/libc/string/strlcat.c @@ -0,0 +1,19 @@ +#include <string.h> + +size_t strlcat(char *restrict dst, const char *restrict src, size_t dstsize) +{ + size_t dlen = strlen(dst); + size_t slen = strlen(src); + size_t n = dstsize - dlen - 1; + + if (n == 0) + return dlen + slen; + + if (n > slen) + n = slen; + + memcpy(dst + dlen, src, n); + dst[dlen + n] = '\0'; + + return dlen + n; +} diff --git a/lib/libc/string/strlcpy.c b/lib/libc/string/strlcpy.c new file mode 100644 index 00000000..2f2f6a3b --- /dev/null +++ b/lib/libc/string/strlcpy.c @@ -0,0 +1,16 @@ +#include <string.h> + +size_t strlcpy(char *restrict dst, const char *restrict src, size_t dstsize) +{ + size_t srclen = strlen(src); + + if (dstsize == 0) { + return srclen; + } + + size_t copylen = srclen < dstsize - 1 ? srclen : dstsize - 1; + memcpy(dst, src, copylen); + dst[copylen] = '\0'; + + return srclen; +} diff --git a/lib/libc/string/strlen.c b/lib/libc/string/strlen.c new file mode 100644 index 00000000..0eb222fa --- /dev/null +++ b/lib/libc/string/strlen.c @@ -0,0 +1,14 @@ +#include <stddef.h> + +size_t strlen(const char *str) +{ + size_t len = 0; + + if (str == NULL) + return 0; + + while (*str++) + len++; + + return len; +} diff --git a/lib/libc/string/strncat.c b/lib/libc/string/strncat.c new file mode 100644 index 00000000..ce0d8e24 --- /dev/null +++ b/lib/libc/string/strncat.c @@ -0,0 +1,19 @@ +#include <string.h> + +char *strncat(char *restrict s1, const char *restrict s2, size_t n) +{ + char *dest = s1; + const char *src = s2; + + while (*dest != '\0') + dest++; + + while (*src != '\0' && n > 0) { + *dest++ = *src++; + n--; + } + + *dest = '\0'; + + return s1; +} diff --git a/lib/libc/string/strncmp.c b/lib/libc/string/strncmp.c new file mode 100644 index 00000000..2fbc2395 --- /dev/null +++ b/lib/libc/string/strncmp.c @@ -0,0 +1,16 @@ +#include <stddef.h> + +int strncmp(const char *s1, const char *s2, size_t n) +{ + const unsigned char *p1 = (const unsigned char *)s1; + const unsigned char *p2 = (const unsigned char *)s2; + + while (n-- > 0) { + if (*p1 != *p2 || *p1 == '\0') + return *p1 - *p2; + p1++; + p2++; + } + + return 0; +} diff --git a/lib/libc/string/strncpy.c b/lib/libc/string/strncpy.c new file mode 100644 index 00000000..c43b88c8 --- /dev/null +++ b/lib/libc/string/strncpy.c @@ -0,0 +1,16 @@ +#include <stddef.h> + +char *strncpy(char *restrict s1, const char *restrict s2, size_t n) +{ + char *result = s1; + + while (n > 0 && *s2 != '\0') { + *s1++ = *s2++; + n--; + } + + if (n > 0) + *s1 = '\0'; + + return result; +} diff --git a/lib/libc/string/strndup.c b/lib/libc/string/strndup.c new file mode 100644 index 00000000..70e10501 --- /dev/null +++ b/lib/libc/string/strndup.c @@ -0,0 +1,15 @@ +#include <stdlib.h> +#include <string.h> + +char *strndup(const char *s, size_t size) +{ + char *result = malloc(size + 1); + + if (result == NULL) + return NULL; + + memcpy(result, s, size); + result[size] = '\0'; + + return result; +} diff --git a/lib/libc/string/strnlen.c b/lib/libc/string/strnlen.c new file mode 100644 index 00000000..11da22ec --- /dev/null +++ b/lib/libc/string/strnlen.c @@ -0,0 +1,11 @@ +#include <stddef.h> + +size_t strnlen(const char *s, size_t maxlen) +{ + size_t len = 0; + + while (*s++ && len < maxlen) + len++; + + return len; +} diff --git a/lib/libc/string/strpbrk.c b/lib/libc/string/strpbrk.c new file mode 100644 index 00000000..21d6507f --- /dev/null +++ b/lib/libc/string/strpbrk.c @@ -0,0 +1,16 @@ +#include <stddef.h> + +char *strpbrk(const char *s1, const char *s2) +{ + while (*s1 != '\0') { + const char *p = s2; + while (*p != '\0') { + if (*s1 == *p) + return (char *)s1; + p++; + } + s1++; + } + + return NULL; +} diff --git a/lib/libc/string/strrchr.c b/lib/libc/string/strrchr.c new file mode 100644 index 00000000..d2807569 --- /dev/null +++ b/lib/libc/string/strrchr.c @@ -0,0 +1,12 @@ +#include <stddef.h> + +char *strrchr(const char *s, int c) +{ + const char *last = NULL; + while (*s != '\0') { + if (*s == c) + last = s; + s++; + } + return (char *)last; +} diff --git a/lib/libc/string/strspn.c b/lib/libc/string/strspn.c new file mode 100644 index 00000000..78277ae7 --- /dev/null +++ b/lib/libc/string/strspn.c @@ -0,0 +1,12 @@ +#include <stddef.h> +#include <string.h> + +size_t strspn(const char *s1, const char *s2) +{ + size_t count = 0; + while (*s1 != '\0' && strchr(s2, *s1) != NULL) { + count++; + s1++; + } + return count; +} diff --git a/lib/libc/string/strstr.c b/lib/libc/string/strstr.c new file mode 100644 index 00000000..c3e2d5dd --- /dev/null +++ b/lib/libc/string/strstr.c @@ -0,0 +1,27 @@ +#include <stddef.h> + +char *strstr(const char *s1, const char *s2) +{ + const char *p = s1; + const char *q = s2; + + if (*q == '\0') + return (char *)p; + + while (*p != '\0') { + const char *pp = p; + const char *qq = q; + + while (*pp == *qq && *pp != '\0') { + pp++; + qq++; + } + + if (*qq == '\0') + return (char *)p; + + p++; + } + + return NULL; +} diff --git a/lib/libc/string/strtok.c b/lib/libc/string/strtok.c new file mode 100644 index 00000000..33d0d685 --- /dev/null +++ b/lib/libc/string/strtok.c @@ -0,0 +1,40 @@ +#include <stddef.h> +#include <string.h> + +char *strtok(char *restrict s, const char *restrict sep) +{ + static _Thread_local char *state = NULL; + + if (s != NULL) { + state = s; + } + + if (state == NULL) { + return NULL; + } + + char *token = state; + while (*token && strchr(sep, *token)) { + token++; + } + + if (*token == '\0') { + state = NULL; + return NULL; + } + + char *start = token; + + while (*token && strchr(sep, *token) == NULL) { + token++; + } + + if (*token) { + *token = '\0'; + state = token + 1; + } else { + state = NULL; + } + + return start; +} diff --git a/lib/libc/string/strtok_r.c b/lib/libc/string/strtok_r.c new file mode 100644 index 00000000..57555b14 --- /dev/null +++ b/lib/libc/string/strtok_r.c @@ -0,0 +1,37 @@ +#include <string.h> + +char *strtok_r(char *restrict s, const char *restrict sep, + char **restrict state) +{ + if (s == NULL) { + s = *state; + } + + if (s == NULL) { + return NULL; + } + + while (*s && strchr(sep, *s)) { + s++; + } + + if (*s == '\0') { + *state = NULL; + return NULL; + } + + char *start = s; + + while (*s && strchr(sep, *s) == NULL) { + s++; + } + + if (*s) { + *s = '\0'; + *state = s + 1; + } else { + *state = NULL; + } + + return start; +} diff --git a/lib/libc/string/strxfrm.c b/lib/libc/string/strxfrm.c new file mode 100644 index 00000000..d62d0a96 --- /dev/null +++ b/lib/libc/string/strxfrm.c @@ -0,0 +1,18 @@ +#include <libc.h> +#include <string.h> + +size_t strxfrm(char *restrict s1, const char *restrict s2, size_t n) +{ + size_t len = strlen(s2); + + if (n > len) + strcpy(s1, s2); + + return len; +} + +weak size_t strxfrm_l(char *restrict s1, const char *restrict s2, size_t n, + locale_t unused locale) +{ + return strxfrm(s1, s2, n); +} diff --git a/lib/libc/strings/ffs.c b/lib/libc/strings/ffs.c new file mode 100644 index 00000000..3b836021 --- /dev/null +++ b/lib/libc/strings/ffs.c @@ -0,0 +1,14 @@ +int ffs(int i) +{ + if (i == 0) + return 0; + + int pos = 1; + unsigned int u = (unsigned int)i; + + while ((u & 1U) == 0U) { + u >>= 1; + pos++; + } + return pos; +} diff --git a/lib/libc/strings/ffsl.c b/lib/libc/strings/ffsl.c new file mode 100644 index 00000000..2f2e7d44 --- /dev/null +++ b/lib/libc/strings/ffsl.c @@ -0,0 +1,14 @@ +int ffsl(long i) +{ + if (i == 0) + return 0; + + int pos = 1; + unsigned long u = (unsigned long)i; + + while ((u & 1UL) == 0UL) { + u >>= 1; + pos++; + } + return pos; +} diff --git a/lib/libc/strings/ffsll.c b/lib/libc/strings/ffsll.c new file mode 100644 index 00000000..acfacb87 --- /dev/null +++ b/lib/libc/strings/ffsll.c @@ -0,0 +1,14 @@ +int ffsll(long long i) +{ + if (i == 0) + return 0; + + int pos = 1; + unsigned long long u = (unsigned long long)i; + + while ((u & 1ULL) == 0ULL) { + u >>= 1; + pos++; + } + return pos; +} diff --git a/lib/libc/strings/strcasecmp.c b/lib/libc/strings/strcasecmp.c new file mode 100644 index 00000000..90ccc59b --- /dev/null +++ b/lib/libc/strings/strcasecmp.c @@ -0,0 +1,24 @@ +#include <libc.h> +#include <ctype.h> + +int strcasecmp(const char *s1, const char *s2) +{ + unsigned char c1, c2; + + while (*s1 && *s2) { + c1 = (unsigned char)tolower((unsigned char)*s1); + c2 = (unsigned char)tolower((unsigned char)*s2); + if (c1 != c2) + return c1 - c2; + s1++; + s2++; + } + + return (unsigned char)tolower((unsigned char)*s1) - + (unsigned char)tolower((unsigned char)*s2); +} + +weak int strcasecmp_l(const char *s1, const char *s2, locale_t unused locale) +{ + return strcasecmp(s1, s2); +} diff --git a/lib/libc/strings/strncasecmp.c b/lib/libc/strings/strncasecmp.c new file mode 100644 index 00000000..679cf245 --- /dev/null +++ b/lib/libc/strings/strncasecmp.c @@ -0,0 +1,32 @@ +#include <libc.h> +#include <ctype.h> +#include <stddef.h> + +int strncasecmp(const char *s1, const char *s2, size_t n) +{ + unsigned char c1, c2; + + if (n == 0) + return 0; + + while (n-- > 0 && *s1 && *s2) { + c1 = (unsigned char)tolower((unsigned char)*s1); + c2 = (unsigned char)tolower((unsigned char)*s2); + if (c1 != c2) + return c1 - c2; + s1++; + s2++; + } + + if (n == (size_t)-1) + return 0; + + return (unsigned char)tolower((unsigned char)*s1) - + (unsigned char)tolower((unsigned char)*s2); +} + +weak int strncasecmp_l(const char *s1, const char *s2, size_t n, + locale_t unused locale) +{ + return strncasecmp(s1, s2, n); +} diff --git a/lib/libc/sys/ioctl.c b/lib/libc/sys/ioctl.c new file mode 100644 index 00000000..9d7cde36 --- /dev/null +++ b/lib/libc/sys/ioctl.c @@ -0,0 +1,13 @@ +#include <stdarg.h> +#include <syscall.h> + +int ioctl(int fildes, unsigned long request, ...) +{ + void *arg; + va_list ap; + va_start(ap, request); + arg = va_arg(ap, void *); + va_end(ap); + + return syscall(ioctl, fildes, request, arg); +} diff --git a/lib/libc/sys/mount.c b/lib/libc/sys/mount.c new file mode 100644 index 00000000..0cb95fcf --- /dev/null +++ b/lib/libc/sys/mount.c @@ -0,0 +1,8 @@ +#include <syscall.h> +#include <sys/mount.h> + +int mount(const char *source, const char *target, const char *filesystemtype, + unsigned long mountflags, const void *_Nullable data) +{ + return syscall(mount, source, target, filesystemtype, mountflags, data); +} diff --git a/lib/libc/sys/umount.c b/lib/libc/sys/umount.c new file mode 100644 index 00000000..ae1ecf8a --- /dev/null +++ b/lib/libc/sys/umount.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int umount(const char *target) +{ + return syscall(umount2, target, 0); +} diff --git a/lib/libc/sys/umount2.c b/lib/libc/sys/umount2.c new file mode 100644 index 00000000..a75588a8 --- /dev/null +++ b/lib/libc/sys/umount2.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int umount2(const char *target, int flags) +{ + return syscall(umount2, target, flags); +} diff --git a/lib/libc/syslog/closelog.c b/lib/libc/syslog/closelog.c new file mode 100644 index 00000000..df9b5a49 --- /dev/null +++ b/lib/libc/syslog/closelog.c @@ -0,0 +1,7 @@ +#include <syslog.h> + +void closelog(void) +{ + // TODO + return; +} diff --git a/lib/libc/syslog/openlog.c b/lib/libc/syslog/openlog.c new file mode 100644 index 00000000..84c4797f --- /dev/null +++ b/lib/libc/syslog/openlog.c @@ -0,0 +1,7 @@ +#include <syslog.h> + +int setlogmask(int maskpri) +{ + // TODO + return 0; +} diff --git a/lib/libc/syslog/setlogmask.c b/lib/libc/syslog/setlogmask.c new file mode 100644 index 00000000..84c4797f --- /dev/null +++ b/lib/libc/syslog/setlogmask.c @@ -0,0 +1,7 @@ +#include <syslog.h> + +int setlogmask(int maskpri) +{ + // TODO + return 0; +} diff --git a/lib/libc/syslog/syslog.c b/lib/libc/syslog/syslog.c new file mode 100644 index 00000000..a9a41fbb --- /dev/null +++ b/lib/libc/syslog/syslog.c @@ -0,0 +1,7 @@ +#include <syslog.h> + +void syslog(int priority, const char *message, ... /* arguments */) +{ + // TODO + return; +} diff --git a/lib/libc/termios/cfgetispeed.c b/lib/libc/termios/cfgetispeed.c new file mode 100644 index 00000000..f06ec65e --- /dev/null +++ b/lib/libc/termios/cfgetispeed.c @@ -0,0 +1,6 @@ +#include <asm-generic/termbits.h> + +speed_t cfgetispeed(const struct termios *termios_p) +{ + return (termios_p->c_cflag & CIBAUD) / (CIBAUD / CBAUD); +} diff --git a/lib/libc/termios/cfgetospeed.c b/lib/libc/termios/cfgetospeed.c new file mode 100644 index 00000000..e36befc3 --- /dev/null +++ b/lib/libc/termios/cfgetospeed.c @@ -0,0 +1,6 @@ +#include <asm-generic/termbits.h> + +speed_t cfgetospeed(const struct termios *termios_p) +{ + return termios_p->c_cflag & CBAUD; +} diff --git a/lib/libc/termios/cfsetispeed.c b/lib/libc/termios/cfsetispeed.c new file mode 100644 index 00000000..b990d598 --- /dev/null +++ b/lib/libc/termios/cfsetispeed.c @@ -0,0 +1,14 @@ +#include <errno.h> +#include <asm-generic/termbits.h> + +int cfsetispeed(struct termios *termios_p, speed_t speed) +{ + if (speed & ~CBAUD) { + errno = EINVAL; + return -1; + } + + termios_p->c_cflag &= ~CIBAUD; + termios_p->c_cflag |= speed * (CIBAUD / CBAUD); + return 0; +} diff --git a/lib/libc/termios/cfsetospeed.c b/lib/libc/termios/cfsetospeed.c new file mode 100644 index 00000000..3f46b5c4 --- /dev/null +++ b/lib/libc/termios/cfsetospeed.c @@ -0,0 +1,13 @@ +#include <errno.h> +#include <asm-generic/termbits.h> + +int cfsetospeed(struct termios *termios_p, speed_t speed) +{ + if (speed & ~CBAUD) { + errno = EINVAL; + return -1; + } + termios_p->c_cflag &= ~CBAUD; + termios_p->c_cflag |= speed; + return 0; +} diff --git a/lib/libc/termios/tcdrain.c b/lib/libc/termios/tcdrain.c new file mode 100644 index 00000000..9eefedf2 --- /dev/null +++ b/lib/libc/termios/tcdrain.c @@ -0,0 +1,7 @@ +#include <asm-generic/ioctls.h> +#include <syscall.h> + +int tcdrain(int fildes) +{ + return syscall(ioctl, fildes, TCSBRK, 1); +} diff --git a/lib/libc/termios/tcflow.c b/lib/libc/termios/tcflow.c new file mode 100644 index 00000000..a10455d1 --- /dev/null +++ b/lib/libc/termios/tcflow.c @@ -0,0 +1,7 @@ +#include <asm-generic/ioctls.h> +#include <syscall.h> + +int tcflow(int fildes, int action) +{ + return syscall(ioctl, fildes, TCXONC, action); +} diff --git a/lib/libc/termios/tcflush.c b/lib/libc/termios/tcflush.c new file mode 100644 index 00000000..b37b218d --- /dev/null +++ b/lib/libc/termios/tcflush.c @@ -0,0 +1,8 @@ +#include <termios.h> +#include <syscall.h> +#include <asm-generic/ioctls.h> + +int tcflush(int fildes, int queue_selector) +{ + return syscall(ioctl, fildes, TCFLSH, queue_selector); +} diff --git a/lib/libc/termios/tcgetattr.c b/lib/libc/termios/tcgetattr.c new file mode 100644 index 00000000..a52eeedf --- /dev/null +++ b/lib/libc/termios/tcgetattr.c @@ -0,0 +1,9 @@ +#include <termios.h> +#include <syscall.h> +#include <asm-generic/ioctls.h> + +int tcgetattr(int fildes, struct termios *termios_p) + +{ + return syscall(ioctl, fildes, TCGETS, termios_p); +} diff --git a/lib/libc/termios/tcgetsid.c b/lib/libc/termios/tcgetsid.c new file mode 100644 index 00000000..076cf360 --- /dev/null +++ b/lib/libc/termios/tcgetsid.c @@ -0,0 +1,13 @@ +#include <termios.h> +#include <syscall.h> +#include <asm-generic/ioctls.h> + +pid_t tcgetsid(int fildes) +{ + pid_t sid = 0; + + if (syscall(ioctl, fildes, TIOCGSID, &sid) < 0) + return -1; + + return sid; +} diff --git a/lib/libc/termios/tcgetwinsize.c b/lib/libc/termios/tcgetwinsize.c new file mode 100644 index 00000000..2c7c5786 --- /dev/null +++ b/lib/libc/termios/tcgetwinsize.c @@ -0,0 +1,23 @@ +#include <termios.h> +#include <syscall.h> +#include <asm-generic/ioctls.h> + +struct __winsize { + unsigned short ws_row; + unsigned short ws_col; + unsigned short ws_xpixel; + unsigned short ws_ypixel; +}; + +int tcgetwinsize(int fildes, struct winsize *winsize_p) +{ + long ret; + struct __winsize winsize = { 0 }; + + ret = syscall(ioctl, fildes, TIOCGWINSZ, &winsize); + + winsize_p->ws_row = winsize.ws_row; + winsize_p->ws_col = winsize.ws_col; + + return ret; +} diff --git a/lib/libc/termios/tcsendbreak.c b/lib/libc/termios/tcsendbreak.c new file mode 100644 index 00000000..a6ed420d --- /dev/null +++ b/lib/libc/termios/tcsendbreak.c @@ -0,0 +1,11 @@ +#include <termios.h> +#include <syscall.h> +#include <asm-generic/ioctls.h> + +int tcsendbreak(int fildes, int duration) +{ + // IEEE Std 1003.1-2024 + // If duration is not 0, it shall send zero-valued + // bits for an implementation-defined period of time. + return syscall(ioctl, fildes, TCSBRK, 0); +} diff --git a/lib/libc/termios/tcsetattr.c b/lib/libc/termios/tcsetattr.c new file mode 100644 index 00000000..a76e77a5 --- /dev/null +++ b/lib/libc/termios/tcsetattr.c @@ -0,0 +1,14 @@ +#include <termios.h> +#include <syscall.h> +#include <asm-generic/ioctls.h> +#include <errno.h> + +int tcsetattr(int fildes, int optional_actions, const struct termios *termios_p) +{ + if (optional_actions < 0 || optional_actions > 2) { + errno = EINVAL; + return -1; + } + + return syscall(ioctl, fildes, TCSETS + optional_actions, termios_p); +} diff --git a/lib/libc/termios/tcsetwinsize.c b/lib/libc/termios/tcsetwinsize.c new file mode 100644 index 00000000..10a705d0 --- /dev/null +++ b/lib/libc/termios/tcsetwinsize.c @@ -0,0 +1,8 @@ +#include <termios.h> +#include <syscall.h> +#include <asm-generic/ioctls.h> + +int tcsetwinsize(int fildes, const struct winsize *winsize_p) +{ + return syscall(ioctl, fildes, TIOCSWINSZ, winsize_p); +} diff --git a/lib/libc/thread/thrd_current.c b/lib/libc/thread/thrd_current.c new file mode 100644 index 00000000..adbb4191 --- /dev/null +++ b/lib/libc/thread/thrd_current.c @@ -0,0 +1,9 @@ +#include <thread.h> +#include <threads.h> +#include <unistd.h> + +thrd_t thrd_current(void) +{ + static _Thread_local struct __thread_self self = { 0 }; + return &self; +} diff --git a/lib/libc/time/asctime.c b/lib/libc/time/asctime.c new file mode 100644 index 00000000..54729a77 --- /dev/null +++ b/lib/libc/time/asctime.c @@ -0,0 +1,19 @@ +#include <time.h> +#include <stdio.h> + +char *asctime(const struct tm *timeptr) +{ + static char wday_name[7][3] = { "Sun", "Mon", "Tue", "Wed", + "Thu", "Fri", "Sat" }; + static char mon_name[12][3] = { "Jan", "Feb", "Mar", "Apr", + "May", "Jun", "Jul", "Aug", + "Sep", "Oct", "Nov", "Dec" }; + static char result[26]; + + snprintf(result, sizeof(result), "%.3s %.3s%3d %.2d:%.2d:%.2d %d\n", + wday_name[timeptr->tm_wday], mon_name[timeptr->tm_mon], + timeptr->tm_mday, timeptr->tm_hour, timeptr->tm_min, + timeptr->tm_sec, 1900 + timeptr->tm_year); + + return result; +} diff --git a/lib/libc/time/clock.c b/lib/libc/time/clock.c new file mode 100644 index 00000000..ec2e6084 --- /dev/null +++ b/lib/libc/time/clock.c @@ -0,0 +1,16 @@ +#include <time.h> +#include <limits.h> + +clock_t clock(void) +{ + struct timespec ts; + + if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts)) + return -1; + + if (ts.tv_sec > LONG_MAX / 1000000 || + ts.tv_nsec / 1000 > LONG_MAX - 1000000 * ts.tv_sec) + return -1; + + return ts.tv_sec * 1000000 + ts.tv_nsec / 1000; +} diff --git a/lib/libc/time/clock_getcpuclockid.c b/lib/libc/time/clock_getcpuclockid.c new file mode 100644 index 00000000..5bb53221 --- /dev/null +++ b/lib/libc/time/clock_getcpuclockid.c @@ -0,0 +1,18 @@ +#include <time.h> +#include <syscall.h> + +int clock_getcpuclockid(pid_t pid, clockid_t *clock_id) +{ + int ret; + clockid_t id; + struct timespec ts; + + id = (-pid - 1) * 8U + 2; + ret = syscall(clock_getres, id, &ts); + + if (ret >= 0) { + *clock_id = id; + } + + return ret; +} diff --git a/lib/libc/time/clock_getres.c b/lib/libc/time/clock_getres.c new file mode 100644 index 00000000..5af37e8d --- /dev/null +++ b/lib/libc/time/clock_getres.c @@ -0,0 +1,7 @@ +#include <time.h> +#include <syscall.h> + +int clock_getres(clockid_t clock_id, struct timespec *res) +{ + return syscall(clock_getres, clock_id, res); +} diff --git a/lib/libc/time/clock_nanosleep.c b/lib/libc/time/clock_nanosleep.c new file mode 100644 index 00000000..63190d06 --- /dev/null +++ b/lib/libc/time/clock_nanosleep.c @@ -0,0 +1,8 @@ +#include <time.h> +#include <syscall.h> + +int clock_nanosleep(clockid_t clock_id, int flags, const struct timespec *rqtp, + struct timespec *rmtp) +{ + return __syscall(nanosleep, clock_id, flags, rqtp, rmtp) * -1; +} diff --git a/lib/libc/time/ctime.c b/lib/libc/time/ctime.c new file mode 100644 index 00000000..bddd30cf --- /dev/null +++ b/lib/libc/time/ctime.c @@ -0,0 +1,6 @@ +#include <time.h> + +char *ctime(const time_t *clock) +{ + return asctime(localtime(clock)); +} diff --git a/lib/libc/time/difftime.c b/lib/libc/time/difftime.c new file mode 100644 index 00000000..e7b567c1 --- /dev/null +++ b/lib/libc/time/difftime.c @@ -0,0 +1,6 @@ +#include <time.h> + +double difftime(time_t time1, time_t time0) +{ + return time1 - time0; +} diff --git a/lib/libc/time/gmtime_r.c b/lib/libc/time/gmtime_r.c new file mode 100644 index 00000000..8d441549 --- /dev/null +++ b/lib/libc/time/gmtime_r.c @@ -0,0 +1,42 @@ +#include <time.h> + +struct tm *gmtime_r(const time_t *timer, struct tm *result) +{ + time_t t = *timer; + int days, rem; + int year, month; + + rem = t % 86400; + days = t / 86400; + if (rem < 0) { + rem += 86400; + days--; + } + + result->tm_hour = rem / 3600; + rem %= 3600; + result->tm_min = rem / 60; + result->tm_sec = rem % 60; + result->tm_isdst = 0; + + result->tm_wday = (4 + days) % 7; + if (result->tm_wday < 0) + result->tm_wday += 7; + + long z = days + 719468; + long era = (z >= 0 ? z : z - 146096) / 146097; + long day_of_era = z - era * 146097; + long yoe = (day_of_era - day_of_era / 1460 + day_of_era / 36524 - + day_of_era / 146096) / + 365; + year = (int)(yoe + era * 400); + long doy = day_of_era - (365 * yoe + yoe / 4 - yoe / 100); + result->tm_yday = (int)doy; + + int mp = (5 * doy + 2) / 153; + result->tm_mday = (int)(doy - (153 * mp + 2) / 5 + 1); + result->tm_mon = (mp + 2) % 12; + result->tm_year = year - 1900 + (mp / 10); + + return result; +} diff --git a/lib/libc/time/localtime.c b/lib/libc/time/localtime.c new file mode 100644 index 00000000..44029920 --- /dev/null +++ b/lib/libc/time/localtime.c @@ -0,0 +1,7 @@ +#include <time.h> + +struct tm *localtime(const time_t *timer) +{ + static struct tm result; + return localtime_r(timer, &result); +} diff --git a/lib/libc/time/localtime_r.c b/lib/libc/time/localtime_r.c new file mode 100644 index 00000000..1fb620a4 --- /dev/null +++ b/lib/libc/time/localtime_r.c @@ -0,0 +1,7 @@ +#include <time.h> + +struct tm *localtime_r(const time_t *restrict timer, struct tm *restrict result) +{ + time_t local = *timer - timezone; + return gmtime_r(&local, result); +} diff --git a/lib/libc/time/nanosleep.c b/lib/libc/time/nanosleep.c new file mode 100644 index 00000000..f5c5f7c9 --- /dev/null +++ b/lib/libc/time/nanosleep.c @@ -0,0 +1,7 @@ +#include <time.h> +#include <syscall.h> + +int nanosleep(const struct timespec *rqtp, struct timespec *rmtp) +{ + return syscall(nanosleep, rqtp, rmtp); +} diff --git a/lib/libc/time/strftime.c b/lib/libc/time/strftime.c new file mode 100644 index 00000000..d359140b --- /dev/null +++ b/lib/libc/time/strftime.c @@ -0,0 +1,562 @@ +#include <time.h> +#include <libc.h> +#include <string.h> + +static size_t append_string(char *restrict *s, size_t *remaining, + const char *str) +{ + size_t len = strlen(str); + if (len >= *remaining) { + return 0; + } + strcpy(*s, str); + *s += len; + *remaining -= len; + return len; +} + +static size_t append_char(char *restrict *s, size_t *remaining, char c) +{ + if (*remaining <= 1) { + return 0; + } + **s = c; + (*s)++; + (*remaining)--; + return 1; +} + +static size_t format_int(char *restrict *s, size_t *remaining, int value, + int width, char pad, int show_sign) +{ + char buffer[32]; + char *ptr = buffer + sizeof(buffer) - 1; + *ptr = '\0'; + + int negative = 0; + if (value < 0) { + negative = 1; + value = -value; + } + + do { + *--ptr = '0' + (value % 10); + value /= 10; + } while (value > 0); + + if (negative) { + *--ptr = '-'; + } else if (show_sign && value >= 0) { + *--ptr = '+'; + } + + int len = (buffer + sizeof(buffer) - 1) - ptr; + + while (len < width) { + *--ptr = pad; + len++; + } + + return append_string(s, remaining, ptr); +} + +static const char *weekday_abbr[] = { "Sun", "Mon", "Tue", "Wed", + "Thu", "Fri", "Sat" }; +static const char *weekday_full[] = { "Sunday", "Monday", "Tuesday", + "Wednesday", "Thursday", "Friday", + "Saturday" }; + +static const char *month_abbr[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", + "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }; +static const char *month_full[] = { "January", "February", "March", + "April", "May", "June", + "July", "August", "September", + "October", "November", "December" }; + +static int day_of_year(const struct tm *tm) +{ + static const int days_to_month[] = { 0, 31, 59, 90, 120, 151, + 181, 212, 243, 273, 304, 334 }; + int days = days_to_month[tm->tm_mon] + tm->tm_mday; + + if (tm->tm_mon > 1) { + int year = tm->tm_year + 1900; + if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) { + days++; + } + } + return days; +} + +static int iso_week_number(const struct tm *tm, int *week_year) +{ + int year = tm->tm_year + 1900; + int yday = tm->tm_yday + 1; + int wday; + + int jan4_wday = (4 + year + (year - 1) / 4 - (year - 1) / 100 + + (year - 1) / 400) % + 7; + if (jan4_wday == 0) + jan4_wday = 7; + + int week1_start = 4 - jan4_wday + 1; + + int week = (yday - week1_start + 7) / 7; + + if (week < 1) { + *week_year = year - 1; + + int prev_jan4_wday = (jan4_wday - 1 + 7) % 7; + if (prev_jan4_wday == 0) + prev_jan4_wday = 7; + int prev_week1_start = 4 - prev_jan4_wday + 1; + int prev_year_days = 365; + if (((year - 1) % 4 == 0 && (year - 1) % 100 != 0) || + ((year - 1) % 400 == 0)) { + prev_year_days = 366; + } + week = (prev_year_days - prev_week1_start + 8) / 7; + } else { + *week_year = year; + + int year_days = 365; + if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) { + year_days = 366; + } + if (week1_start + (week - 1) * 7 > year_days - 3) { + if (yday > year_days - (7 - jan4_wday)) { + *week_year = year + 1; + week = 1; + } + } + } + + return week; +} + +size_t strftime(char *restrict s, size_t maxsize, const char *restrict format, + const struct tm *restrict timeptr) +{ + if (maxsize == 0) + return 0; + + char *orig_s = s; + size_t remaining = maxsize - 1; + const char *ptr = format; + + while (*ptr && remaining > 0) { + if (*ptr != '%') { + if (!append_char(&s, &remaining, *ptr)) { + *orig_s = '\0'; + return 0; + } + ptr++; + continue; + } + + ptr++; + if (!*ptr) + break; + + char pad_char = ' '; + int show_sign = 0; + int min_width = 0; + + if (*ptr == '0') { + pad_char = '0'; + ptr++; + } else if (*ptr == '+') { + pad_char = '0'; + show_sign = 1; + ptr++; + } + + while (*ptr >= '0' && *ptr <= '9') { + min_width = min_width * 10 + (*ptr - '0'); + ptr++; + } + + if (*ptr == 'E' || *ptr == 'O') { + ptr++; + } + + switch (*ptr) { + case 'a': + if (!append_string(&s, &remaining, + weekday_abbr[timeptr->tm_wday])) { + *orig_s = '\0'; + return 0; + } + break; + case 'A': + if (!append_string(&s, &remaining, + weekday_full[timeptr->tm_wday])) { + *orig_s = '\0'; + return 0; + } + break; + case 'b': + case 'h': + if (!append_string(&s, &remaining, + month_abbr[timeptr->tm_mon])) { + *orig_s = '\0'; + return 0; + } + break; + case 'B': + if (!append_string(&s, &remaining, + month_full[timeptr->tm_mon])) { + *orig_s = '\0'; + return 0; + } + break; + case 'c': + if (!append_string(&s, &remaining, + weekday_abbr[timeptr->tm_wday]) || + !append_char(&s, &remaining, ' ') || + !append_string(&s, &remaining, + month_abbr[timeptr->tm_mon]) || + !append_char(&s, &remaining, ' ') || + !format_int(&s, &remaining, timeptr->tm_mday, 2, + ' ', 0) || + !append_char(&s, &remaining, ' ') || + !format_int(&s, &remaining, timeptr->tm_hour, 2, + '0', 0) || + !append_char(&s, &remaining, ':') || + !format_int(&s, &remaining, timeptr->tm_min, 2, '0', + 0) || + !append_char(&s, &remaining, ':') || + !format_int(&s, &remaining, timeptr->tm_sec, 2, '0', + 0) || + !append_char(&s, &remaining, ' ') || + !format_int(&s, &remaining, timeptr->tm_year + 1900, + 4, '0', 0)) { + *orig_s = '\0'; + return 0; + } + break; + case 'C': + if (!format_int(&s, &remaining, + (timeptr->tm_year + 1900) / 100, + min_width ? min_width : 2, pad_char, + show_sign)) { + *orig_s = '\0'; + return 0; + } + break; + case 'd': + if (!format_int(&s, &remaining, timeptr->tm_mday, 2, + '0', 0)) { + *orig_s = '\0'; + return 0; + } + break; + case 'D': + if (!format_int(&s, &remaining, timeptr->tm_mon + 1, 2, + '0', 0) || + !append_char(&s, &remaining, '/') || + !format_int(&s, &remaining, timeptr->tm_mday, 2, + '0', 0) || + !append_char(&s, &remaining, '/') || + !format_int(&s, &remaining, timeptr->tm_year % 100, + 2, '0', 0)) { + *orig_s = '\0'; + return 0; + } + break; + case 'e': + if (!format_int(&s, &remaining, timeptr->tm_mday, 2, + ' ', 0)) { + *orig_s = '\0'; + return 0; + } + break; + case 'F': { + int width = min_width ? min_width - 6 : 4; + if (width < 4) + width = 4; + if (!format_int(&s, &remaining, timeptr->tm_year + 1900, + width, pad_char, show_sign) || + !append_char(&s, &remaining, '-') || + !format_int(&s, &remaining, timeptr->tm_mon + 1, 2, + '0', 0) || + !append_char(&s, &remaining, '-') || + !format_int(&s, &remaining, timeptr->tm_mday, 2, + '0', 0)) { + *orig_s = '\0'; + return 0; + } + } break; + case 'g': { + int week_year; + iso_week_number(timeptr, &week_year); + if (!format_int(&s, &remaining, week_year % 100, 2, '0', + 0)) { + *orig_s = '\0'; + return 0; + } + } break; + case 'G': { + int week_year; + iso_week_number(timeptr, &week_year); + if (!format_int(&s, &remaining, week_year, + min_width ? min_width : 4, pad_char, + show_sign)) { + *orig_s = '\0'; + return 0; + } + } break; + case 'H': + if (!format_int(&s, &remaining, timeptr->tm_hour, 2, + '0', 0)) { + *orig_s = '\0'; + return 0; + } + break; + case 'I': { + int hour12 = timeptr->tm_hour % 12; + if (hour12 == 0) + hour12 = 12; + if (!format_int(&s, &remaining, hour12, 2, '0', 0)) { + *orig_s = '\0'; + return 0; + } + } break; + case 'j': + if (!format_int(&s, &remaining, timeptr->tm_yday + 1, 3, + '0', 0)) { + *orig_s = '\0'; + return 0; + } + break; + case 'm': + if (!format_int(&s, &remaining, timeptr->tm_mon + 1, 2, + '0', 0)) { + *orig_s = '\0'; + return 0; + } + break; + case 'M': + if (!format_int(&s, &remaining, timeptr->tm_min, 2, '0', + 0)) { + *orig_s = '\0'; + return 0; + } + break; + case 'n': + if (!append_char(&s, &remaining, '\n')) { + *orig_s = '\0'; + return 0; + } + break; + case 'p': + if (!append_string(&s, &remaining, + timeptr->tm_hour < 12 ? "AM" : + "PM")) { + *orig_s = '\0'; + return 0; + } + break; + case 'r': { + int hour12 = timeptr->tm_hour % 12; + if (hour12 == 0) + hour12 = 12; + if (!format_int(&s, &remaining, hour12, 2, '0', 0) || + !append_char(&s, &remaining, ':') || + !format_int(&s, &remaining, timeptr->tm_min, 2, '0', + 0) || + !append_char(&s, &remaining, ':') || + !format_int(&s, &remaining, timeptr->tm_sec, 2, '0', + 0) || + !append_char(&s, &remaining, ' ') || + !append_string(&s, &remaining, + timeptr->tm_hour < 12 ? "AM" : + "PM")) { + *orig_s = '\0'; + return 0; + } + } break; + case 'R': + if (!format_int(&s, &remaining, timeptr->tm_hour, 2, + '0', 0) || + !append_char(&s, &remaining, ':') || + !format_int(&s, &remaining, timeptr->tm_min, 2, '0', + 0)) { + *orig_s = '\0'; + return 0; + } + break; + case 's': + + if (!append_char(&s, &remaining, '0')) { + *orig_s = '\0'; + return 0; + } + break; + case 'S': + if (!format_int(&s, &remaining, timeptr->tm_sec, 2, '0', + 0)) { + *orig_s = '\0'; + return 0; + } + break; + case 't': + if (!append_char(&s, &remaining, '\t')) { + *orig_s = '\0'; + return 0; + } + break; + case 'T': + if (!format_int(&s, &remaining, timeptr->tm_hour, 2, + '0', 0) || + !append_char(&s, &remaining, ':') || + !format_int(&s, &remaining, timeptr->tm_min, 2, '0', + 0) || + !append_char(&s, &remaining, ':') || + !format_int(&s, &remaining, timeptr->tm_sec, 2, '0', + 0)) { + *orig_s = '\0'; + return 0; + } + break; + case 'u': { + int wday = timeptr->tm_wday; + if (wday == 0) + wday = 7; + if (!format_int(&s, &remaining, wday, 1, '0', 0)) { + *orig_s = '\0'; + return 0; + } + } break; + case 'U': { + int week = + (timeptr->tm_yday + 7 - timeptr->tm_wday) / 7; + if (!format_int(&s, &remaining, week, 2, '0', 0)) { + *orig_s = '\0'; + return 0; + } + } break; + case 'V': { + int week_year; + int week = iso_week_number(timeptr, &week_year); + if (!format_int(&s, &remaining, week, 2, '0', 0)) { + *orig_s = '\0'; + return 0; + } + } break; + case 'w': + if (!format_int(&s, &remaining, timeptr->tm_wday, 1, + '0', 0)) { + *orig_s = '\0'; + return 0; + } + break; + case 'W': { + int wday = timeptr->tm_wday; + if (wday == 0) + wday = 7; + int week = (timeptr->tm_yday + 7 - wday + 1) / 7; + if (!format_int(&s, &remaining, week, 2, '0', 0)) { + *orig_s = '\0'; + return 0; + } + } break; + case 'x': + if (!format_int(&s, &remaining, timeptr->tm_mon + 1, 2, + '0', 0) || + !append_char(&s, &remaining, '/') || + !format_int(&s, &remaining, timeptr->tm_mday, 2, + '0', 0) || + !append_char(&s, &remaining, '/') || + !format_int(&s, &remaining, timeptr->tm_year % 100, + 2, '0', 0)) { + *orig_s = '\0'; + return 0; + } + break; + case 'X': + if (!format_int(&s, &remaining, timeptr->tm_hour, 2, + '0', 0) || + !append_char(&s, &remaining, ':') || + !format_int(&s, &remaining, timeptr->tm_min, 2, '0', + 0) || + !append_char(&s, &remaining, ':') || + !format_int(&s, &remaining, timeptr->tm_sec, 2, '0', + 0)) { + *orig_s = '\0'; + return 0; + } + break; + case 'y': + if (!format_int(&s, &remaining, timeptr->tm_year % 100, + 2, '0', 0)) { + *orig_s = '\0'; + return 0; + } + break; + case 'Y': + if (!format_int(&s, &remaining, timeptr->tm_year + 1900, + min_width ? min_width : 4, pad_char, + show_sign)) { + *orig_s = '\0'; + return 0; + } + break; + case 'z': { + if (timeptr->tm_isdst < 0) { + break; + } + long offset = timeptr->tm_gmtoff; + char sign = '+'; + if (offset < 0) { + sign = '-'; + offset = -offset; + } + int hours = offset / 3600; + int minutes = (offset % 3600) / 60; + if (!append_char(&s, &remaining, sign) || + !format_int(&s, &remaining, hours, 2, '0', 0) || + !format_int(&s, &remaining, minutes, 2, '0', 0)) { + *orig_s = '\0'; + return 0; + } + } break; + case 'Z': + if (timeptr->tm_zone) { + if (!append_string(&s, &remaining, + timeptr->tm_zone)) { + *orig_s = '\0'; + return 0; + } + } + break; + case '%': + if (!append_char(&s, &remaining, '%')) { + *orig_s = '\0'; + return 0; + } + break; + default: + + if (!append_char(&s, &remaining, '%') || + !append_char(&s, &remaining, *ptr)) { + *orig_s = '\0'; + return 0; + } + break; + } + ptr++; + } + + *s = '\0'; + return s - orig_s; +} + +weak size_t strftime_l(char *restrict s, size_t maxsize, + const char *restrict format, + const struct tm *restrict timeptr, + locale_t unused locale) +{ + return strftime(s, maxsize, format, timeptr); +} diff --git a/lib/libc/time/time.c b/lib/libc/time/time.c new file mode 100644 index 00000000..134eed7b --- /dev/null +++ b/lib/libc/time/time.c @@ -0,0 +1,20 @@ +#include <time.h> +#include <asm/vdso.h> +#include <syscall.h> + +time_t time(time_t *tloc) +{ + struct timespec ts; + +#if defined(__x86_64__) + if (__vdso_time) + return __vdso_time(tloc); +#endif + + clock_gettime(CLOCK_REALTIME, &ts); + + if (tloc) + *tloc = ts.tv_sec; + + return ts.tv_sec; +} diff --git a/lib/libc/time/tzset.c b/lib/libc/time/tzset.c new file mode 100644 index 00000000..96f33702 --- /dev/null +++ b/lib/libc/time/tzset.c @@ -0,0 +1,58 @@ +#include <time.h> +#include <ctype.h> + +int daylight = 0; +long timezone = 0; +char *tzname[2] = { "UTC", "UTC" }; + +void tzset(void) +{ + const char *tz = NULL; // getenv("TZ"); + + if (tz == NULL || *tz == '\0') { + timezone = 0; + daylight = 0; + tzname[0] = tzname[1] = "UTC"; + return; + } + + const char *p = tz; + char sign = 0; + int hours = 0, mins = 0; + + static char stdname[8]; + int i = 0; + while (*p && !isdigit((unsigned char)*p) && *p != '+' && *p != '-' && + i < 7) { + stdname[i++] = *p++; + } + + stdname[i] = '\0'; + if (stdname[0]) + tzname[0] = stdname; + else + tzname[0] = "LCL"; + + if (*p == '+' || *p == '-') + sign = *p++; + + while (isdigit((unsigned char)*p)) + hours = hours * 10 + (*p++ - '0'); + + if (*p == ':') { + p++; + while (isdigit((unsigned char)*p)) + mins = mins * 10 + (*p++ - '0'); + } + + int total = hours * 3600 + mins * 60; + if (sign == '+') + timezone = -total; + else if (sign == '-') + timezone = total; + else + timezone = 0; + + daylight = 0; + tzname[1] = tzname[0]; +} diff --git a/lib/libc/time/utimes.c b/lib/libc/time/utimes.c new file mode 100644 index 00000000..d6448c76 --- /dev/null +++ b/lib/libc/time/utimes.c @@ -0,0 +1,25 @@ +#include <fcntl.h> +#include <errno.h> +#include <stddef.h> +#include <sys/stat.h> +#include <sys/time.h> + +int utimes(const char *path, const struct timeval times[2]) +{ + struct timespec ts[2]; + + if (times) { + if (times[0].tv_usec >= 1000000ULL || + times[1].tv_usec >= 1000000ULL) { + errno = EINVAL; + return -1; + } + + ts[0].tv_sec = times[0].tv_sec; + ts[0].tv_nsec = times[0].tv_usec * 1000; + ts[1].tv_sec = times[1].tv_sec; + ts[1].tv_nsec = times[1].tv_usec * 1000; + } + + return utimensat(AT_FDCWD, path, times ? ts : NULL, 0); +} diff --git a/lib/libc/times/times.c b/lib/libc/times/times.c new file mode 100644 index 00000000..bd850215 --- /dev/null +++ b/lib/libc/times/times.c @@ -0,0 +1,7 @@ +#include <sys/times.h> +#include <syscall.h> + +clock_t times(struct tms *buffer) +{ + return syscall(times, buffer); +} diff --git a/lib/libc/uio/readv.c b/lib/libc/uio/readv.c new file mode 100644 index 00000000..8a2d9216 --- /dev/null +++ b/lib/libc/uio/readv.c @@ -0,0 +1,55 @@ +#include <unistd.h> +#include <linux/uio.h> +#include <syscall.h> +#include <errno.h> +#include <string.h> + +ssize_t readv(int fd, const struct iovec *iov, int iovcnt) +{ + ssize_t total = 0; + + if (iovcnt == 0) { + return 0; + } + + if (iovcnt < 0) { + errno = EINVAL; + return -1; + } + + while (iovcnt > 0) { + int chunk = iovcnt > UIO_MAXIOV ? UIO_MAXIOV : iovcnt; + + struct iovec local[UIO_MAXIOV]; + memcpy(local, iov, chunk * sizeof(struct iovec)); + + ssize_t ret = syscall(readv, fd, local, chunk); + if (ret < 0) { + if (total > 0 && (errno == EAGAIN || errno == EINTR)) + return total; + return ret; + } + if (ret == 0) + break; // EOF + + total += ret; + + ssize_t remaining = ret; + while (remaining > 0 && iovcnt > 0) { + if ((size_t)remaining >= iov->iov_len) { + remaining -= iov->iov_len; + iov++; + iovcnt--; + } else { + struct iovec tmp = *iov; + tmp.iov_base = (char *)tmp.iov_base + remaining; + tmp.iov_len -= remaining; + memcpy(local, &tmp, sizeof(tmp)); + remaining = 0; + break; + } + } + } + + return total; +} diff --git a/lib/libc/uio/writev.c b/lib/libc/uio/writev.c new file mode 100644 index 00000000..4e304336 --- /dev/null +++ b/lib/libc/uio/writev.c @@ -0,0 +1,49 @@ +#include <unistd.h> +#include <syscall.h> +#include <errno.h> +#include <string.h> +#include <linux/uio.h> + +ssize_t writev(int fd, const struct iovec *iov, int iovcnt) +{ + ssize_t total = 0; + + if (iovcnt < 0) { + errno = EINVAL; + return -1; + } + + while (iovcnt > 0) { + int chunk = iovcnt > UIO_MAXIOV ? UIO_MAXIOV : iovcnt; + + struct iovec local[UIO_MAXIOV]; + memcpy(local, iov, chunk * sizeof(struct iovec)); + + ssize_t ret = syscall(writev, fd, local, chunk); + if (ret < 0) { + if (total > 0 && (errno == EAGAIN || errno == EINTR)) + return total; + return ret; + } + + total += ret; + + ssize_t remaining = ret; + while (remaining > 0 && iovcnt > 0) { + if ((size_t)remaining >= iov->iov_len) { + remaining -= iov->iov_len; + iov++; + iovcnt--; + } else { + struct iovec tmp = *iov; + tmp.iov_base = (char *)tmp.iov_base + remaining; + tmp.iov_len -= remaining; + memcpy(local, &tmp, sizeof(tmp)); + remaining = 0; + break; + } + } + } + + return total; +} diff --git a/lib/libc/unistd/_Fork.c b/lib/libc/unistd/_Fork.c new file mode 100644 index 00000000..080dd880 --- /dev/null +++ b/lib/libc/unistd/_Fork.c @@ -0,0 +1,8 @@ +#include <unistd.h> +#include <syscall.h> +#include <linux/signal.h> + +pid_t _Fork(void) +{ + return syscall(clone, SIGCHLD, 0); +} diff --git a/lib/libc/unistd/_exit.c b/lib/libc/unistd/_exit.c new file mode 100644 index 00000000..ffd502c4 --- /dev/null +++ b/lib/libc/unistd/_exit.c @@ -0,0 +1,7 @@ +#include <syscall.h> + +void _exit(int status) +{ + __syscall(exit, status); + __builtin_unreachable(); +} diff --git a/lib/libc/unistd/access.c b/lib/libc/unistd/access.c new file mode 100644 index 00000000..7735d8c4 --- /dev/null +++ b/lib/libc/unistd/access.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int access(const char *path, int amode) +{ + return syscall(access, path, amode); +} diff --git a/lib/libc/unistd/alarm.c b/lib/libc/unistd/alarm.c new file mode 100644 index 00000000..5d171cc7 --- /dev/null +++ b/lib/libc/unistd/alarm.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +unsigned alarm(unsigned seconds) +{ + return syscall(alarm, seconds); +} diff --git a/lib/libc/unistd/chdir.c b/lib/libc/unistd/chdir.c new file mode 100644 index 00000000..5c66cc0c --- /dev/null +++ b/lib/libc/unistd/chdir.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int chdir(const char *path) +{ + return syscall(chdir, path); +} diff --git a/lib/libc/unistd/chown.c b/lib/libc/unistd/chown.c new file mode 100644 index 00000000..fa7e0e7b --- /dev/null +++ b/lib/libc/unistd/chown.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int chown(const char *path, uid_t owner, gid_t group) +{ + return syscall(chown, path, owner, group); +} diff --git a/lib/libc/unistd/close.c b/lib/libc/unistd/close.c new file mode 100644 index 00000000..57e45c33 --- /dev/null +++ b/lib/libc/unistd/close.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int close(int fildes) +{ + return syscall(close, fildes); +} diff --git a/lib/libc/unistd/dup.c b/lib/libc/unistd/dup.c new file mode 100644 index 00000000..764c16f6 --- /dev/null +++ b/lib/libc/unistd/dup.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int dup(int fildes) +{ + return syscall(dup, fildes); +} diff --git a/lib/libc/unistd/dup2.c b/lib/libc/unistd/dup2.c new file mode 100644 index 00000000..ce1125ac --- /dev/null +++ b/lib/libc/unistd/dup2.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int dup2(int fildes, int fildes2) +{ + return syscall(dup2, fildes, fildes2); +} diff --git a/lib/libc/unistd/dup3.c b/lib/libc/unistd/dup3.c new file mode 100644 index 00000000..aa9c0fab --- /dev/null +++ b/lib/libc/unistd/dup3.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int dup3(int fildes, int fildes2, int flag) +{ + return syscall(dup3, fildes, fildes2, flag); +} diff --git a/lib/libc/unistd/execl.c b/lib/libc/unistd/execl.c new file mode 100644 index 00000000..5dc7bc74 --- /dev/null +++ b/lib/libc/unistd/execl.c @@ -0,0 +1,26 @@ +#include <stdarg.h> +#include <stddef.h> +#include <unistd.h> + +int execl(const char *path, const char *argv0, ...) +{ + int argc; + va_list ap; + va_start(ap, argv0); + + argc = 1; + while (va_arg(ap, const char *) != NULL) { + argc++; + } + va_end(ap); + + char *argv[argc + 1]; + va_start(ap, argv0); + for (int i = 1; i < argc; i++) { + argv[i] = (char *)va_arg(ap, const char *); + } + argv[argc] = NULL; + va_end(ap); + + return execvp(path, argv); +} diff --git a/lib/libc/unistd/execlp.c b/lib/libc/unistd/execlp.c new file mode 100644 index 00000000..4613a7ee --- /dev/null +++ b/lib/libc/unistd/execlp.c @@ -0,0 +1,27 @@ +#include <stdarg.h> +#include <stddef.h> +#include <syscall.h> + +// TODO: need to find in path and call execl +int execlp(const char *path, const char *argv0, ...) +{ + int argc; + va_list ap; + va_start(ap, argv0); + + argc = 1; + while (va_arg(ap, const char *) != NULL) { + argc++; + } + va_end(ap); + + char *argv[argc + 1]; + va_start(ap, argv0); + for (int i = 1; i < argc; i++) { + argv[i] = (char *)va_arg(ap, const char *); + } + argv[argc] = NULL; + va_end(ap); + + return syscall(execve, path, argv, 0); +} diff --git a/lib/libc/unistd/execv.c b/lib/libc/unistd/execv.c new file mode 100644 index 00000000..60ee6d87 --- /dev/null +++ b/lib/libc/unistd/execv.c @@ -0,0 +1,9 @@ +#include <unistd.h> +#include <syscall.h> + +extern char **environ; + +int execv(const char *path, char *const argv[]) +{ + return syscall(execve, path, argv, environ); +} diff --git a/lib/libc/unistd/execve.c b/lib/libc/unistd/execve.c new file mode 100644 index 00000000..43226d98 --- /dev/null +++ b/lib/libc/unistd/execve.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int execve(const char *file, char *const argv[], char *const envp[]) +{ + return syscall(execve, file, argv, envp); +} diff --git a/lib/libc/unistd/execvp.c b/lib/libc/unistd/execvp.c new file mode 100644 index 00000000..2ce69354 --- /dev/null +++ b/lib/libc/unistd/execvp.c @@ -0,0 +1,55 @@ +#include <errno.h> +#include <limits.h> +#include <string.h> +#include <unistd.h> +#include <stdio.h> + +extern char **environ; + +int execvp(const char *file, char *const argv[]) +{ + if (*file == '\0') { + errno = ENOENT; + return -1; + } + + if (strchr(file, '/') != NULL) { + return execv(file, argv); + } else { + char *ptr; + char *path = NULL; // TODO: getenv + + if (path == NULL || *path == '\0') { + path = "/bin"; + } + + do { + char buf[PATH_MAX]; + + if ((ptr = strchr(path, ':')) == NULL) { + if (snprintf(buf, PATH_MAX, "%s/%s", path, + file) >= PATH_MAX) { + errno = ENAMETOOLONG; + return -1; + } + + execv(buf, argv); + break; + } + + if (snprintf(buf, PATH_MAX, "%.*s/%s", + (int)(ptr - path), path, + file) >= PATH_MAX) { + errno = ENAMETOOLONG; + return -1; + } + + execv(buf, argv); + } while (*ptr != '\0'); + + errno = ENOENT; + return -1; + } + + return 0; +} diff --git a/lib/libc/unistd/faccessat.c b/lib/libc/unistd/faccessat.c new file mode 100644 index 00000000..61680aea --- /dev/null +++ b/lib/libc/unistd/faccessat.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int faccessat(int fd, const char *path, int amode, int flag) +{ + return syscall(faccessat, fd, path, amode, flag); +} diff --git a/lib/libc/unistd/fchdir.c b/lib/libc/unistd/fchdir.c new file mode 100644 index 00000000..9c0ed172 --- /dev/null +++ b/lib/libc/unistd/fchdir.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int fchdir(int fildes) +{ + return syscall(fchdir, fildes); +} diff --git a/lib/libc/unistd/fchown.c b/lib/libc/unistd/fchown.c new file mode 100644 index 00000000..ba0ff964 --- /dev/null +++ b/lib/libc/unistd/fchown.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int fchown(int fildes, uid_t owner, gid_t group) +{ + return syscall(fchown, fildes, owner, group); +} diff --git a/lib/libc/unistd/fchownat.c b/lib/libc/unistd/fchownat.c new file mode 100644 index 00000000..3e08472b --- /dev/null +++ b/lib/libc/unistd/fchownat.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int fchownat(int fd, const char *path, uid_t owner, gid_t group, int flag) +{ + return syscall(fchownat, fd, path, owner, group, flag); +} diff --git a/lib/libc/unistd/fdatasync.c b/lib/libc/unistd/fdatasync.c new file mode 100644 index 00000000..e65c79f0 --- /dev/null +++ b/lib/libc/unistd/fdatasync.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int fdatasync(int fildes) +{ + return syscall(fdatasync, fildes); +} diff --git a/lib/libc/unistd/fork.c b/lib/libc/unistd/fork.c new file mode 100644 index 00000000..38657406 --- /dev/null +++ b/lib/libc/unistd/fork.c @@ -0,0 +1,6 @@ +#include <unistd.h> + +pid_t fork(void) +{ + return _Fork(); +} diff --git a/lib/libc/unistd/fsync.c b/lib/libc/unistd/fsync.c new file mode 100644 index 00000000..e92e1cc1 --- /dev/null +++ b/lib/libc/unistd/fsync.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int fsync(int fildes) +{ + return syscall(fsync, fildes); +} diff --git a/lib/libc/unistd/ftruncate.c b/lib/libc/unistd/ftruncate.c new file mode 100644 index 00000000..f032ed1b --- /dev/null +++ b/lib/libc/unistd/ftruncate.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int ftruncate(int fildes, off_t length) +{ + return syscall(ftruncate, fildes, length); +} diff --git a/lib/libc/unistd/getcwd.c b/lib/libc/unistd/getcwd.c new file mode 100644 index 00000000..5494f6e3 --- /dev/null +++ b/lib/libc/unistd/getcwd.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +char *getcwd(char *buf, size_t size) +{ + return (char *)syscall(getcwd, buf, size); +} diff --git a/lib/libc/unistd/getegid.c b/lib/libc/unistd/getegid.c new file mode 100644 index 00000000..b50e5839 --- /dev/null +++ b/lib/libc/unistd/getegid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +gid_t getegid(void) +{ + return syscall(getegid); +} diff --git a/lib/libc/unistd/getentropy.c b/lib/libc/unistd/getentropy.c new file mode 100644 index 00000000..f55fed7a --- /dev/null +++ b/lib/libc/unistd/getentropy.c @@ -0,0 +1,8 @@ +#include <unistd.h> +#include <syscall.h> + +int getentropy(void *buffer, size_t length) +{ + // TODO + return 0; +} diff --git a/lib/libc/unistd/geteuid.c b/lib/libc/unistd/geteuid.c new file mode 100644 index 00000000..aee26a42 --- /dev/null +++ b/lib/libc/unistd/geteuid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +gid_t geteuid(void) +{ + return syscall(geteuid); +} diff --git a/lib/libc/unistd/getgid.c b/lib/libc/unistd/getgid.c new file mode 100644 index 00000000..7d19d58e --- /dev/null +++ b/lib/libc/unistd/getgid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +gid_t getgid(void) +{ + return syscall(getgid); +} diff --git a/lib/libc/unistd/getgroups.c b/lib/libc/unistd/getgroups.c new file mode 100644 index 00000000..fb1346e5 --- /dev/null +++ b/lib/libc/unistd/getgroups.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int getgroups(int gidsetsize, gid_t grouplist[]) +{ + return syscall(getgroups, gidsetsize, grouplist); +} diff --git a/lib/libc/unistd/gethostid.c b/lib/libc/unistd/gethostid.c new file mode 100644 index 00000000..e3079534 --- /dev/null +++ b/lib/libc/unistd/gethostid.c @@ -0,0 +1,7 @@ +#include <syscall.h> + +long gethostid(void) +{ + // TODO + return 0; +} diff --git a/lib/libc/unistd/gethostname.c b/lib/libc/unistd/gethostname.c new file mode 100644 index 00000000..a20808e1 --- /dev/null +++ b/lib/libc/unistd/gethostname.c @@ -0,0 +1,8 @@ +#include <unistd.h> +#include <syscall.h> + +int gethostname(char *name, size_t namelen) +{ + // TODO + return 0; +} diff --git a/lib/libc/unistd/getlogin.c b/lib/libc/unistd/getlogin.c new file mode 100644 index 00000000..04355db1 --- /dev/null +++ b/lib/libc/unistd/getlogin.c @@ -0,0 +1,7 @@ +#include <syscall.h> + +char *getlogin(void) +{ + // TODO + return 0; +} diff --git a/lib/libc/unistd/getlogin_r.c b/lib/libc/unistd/getlogin_r.c new file mode 100644 index 00000000..3dea2dff --- /dev/null +++ b/lib/libc/unistd/getlogin_r.c @@ -0,0 +1,8 @@ +#include <unistd.h> +#include <syscall.h> + +int getlogin_r(char *name, size_t namesize) +{ + // TODO + return 0; +} diff --git a/lib/libc/unistd/getopt.c b/lib/libc/unistd/getopt.c new file mode 100644 index 00000000..8ef18d37 --- /dev/null +++ b/lib/libc/unistd/getopt.c @@ -0,0 +1,114 @@ +#include <unistd.h> +#include <stdio.h> +#include <string.h> +#include <sys/uio.h> + +char *optarg; +int optind = 1, opterr = 1, optopt; + +int getopt(int argc, char *const argv[], const char *optstring) +{ + char *optchar; + char c, d; + int i; + static int optpos; + + if (optind == 0) { + optpos = 0; + optind = 1; + } + + if (optind >= argc || !argv[optind]) { + return -1; + } + + if (argv[optind][0] != '-') { + if (optstring[0] == '-') { + optarg = argv[optind++]; + return 1; + } + + return -1; + } + + if (argv[optind][1] == 0) { + return -1; + } + + if (argv[optind][1] == '-' && argv[optind][2] == 0) { + return optind++, -1; + } + + if (optpos == 0) + optpos++; + + c = argv[optind][optpos]; + optchar = argv[optind] + optpos++; + + if (argv[optind][optpos] == 0) { + optind++; + optpos = 0; + } + + i = 0; + + do { + d = optstring[i++]; + } while (d && d != c); + + if (d != c || c == ':') { + optopt = c; + if (optstring[0] != ':' && opterr) { + struct iovec iov[4]; + char opt_char[2] = { *optchar, '\0' }; + + iov[0].iov_base = argv[0]; + iov[0].iov_len = strlen(argv[0]); + iov[1].iov_base = ": invalid option -- "; + iov[1].iov_len = 20; + iov[2].iov_base = opt_char; + iov[2].iov_len = 1; + iov[3].iov_base = "\n"; + iov[3].iov_len = 1; + + writev(STDERR_FILENO, iov, 4); + } + return '?'; + } + + if (optstring[i] == ':') { + optarg = 0; + if (optstring[i + 1] != ':' || optpos) { + optarg = argv[optind++]; + if (optpos) { + optarg += optpos; + } + optpos = 0; + } + if (optind > argc) { + optopt = c; + if (optstring[0] == ':') { + return ':'; + } + if (opterr) { + struct iovec iov[4]; + char opt_char[2] = { *optchar, '\0' }; + + iov[0].iov_base = argv[0]; + iov[0].iov_len = strlen(argv[0]); + iov[1].iov_base = + ": option requires an argument -- "; + iov[1].iov_len = 33; + iov[2].iov_base = opt_char; + iov[2].iov_len = 1; + iov[3].iov_base = "\n"; + iov[3].iov_len = 1; + + writev(STDERR_FILENO, iov, 4); + } + return '?'; + } + } + + return c; +} diff --git a/lib/libc/unistd/getpgid.c b/lib/libc/unistd/getpgid.c new file mode 100644 index 00000000..aed55bb9 --- /dev/null +++ b/lib/libc/unistd/getpgid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +pid_t getpgid(pid_t pid) +{ + return syscall(getpgid, pid); +} diff --git a/lib/libc/unistd/getpid.c b/lib/libc/unistd/getpid.c new file mode 100644 index 00000000..46562867 --- /dev/null +++ b/lib/libc/unistd/getpid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +pid_t getpid(void) +{ + return syscall(getpid); +} diff --git a/lib/libc/unistd/getppid.c b/lib/libc/unistd/getppid.c new file mode 100644 index 00000000..16bf101e --- /dev/null +++ b/lib/libc/unistd/getppid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +pid_t getppid(void) +{ + return syscall(getppid); +} diff --git a/lib/libc/unistd/getresgid.c b/lib/libc/unistd/getresgid.c new file mode 100644 index 00000000..ccdbabaa --- /dev/null +++ b/lib/libc/unistd/getresgid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int getresgid(gid_t *restrict rgid, gid_t *restrict egid, gid_t *restrict sgid) +{ + return syscall(getresgid, rgid, egid, sgid); +} diff --git a/lib/libc/unistd/getresuid.c b/lib/libc/unistd/getresuid.c new file mode 100644 index 00000000..a9a405ae --- /dev/null +++ b/lib/libc/unistd/getresuid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int getresuid(uid_t *restrict ruid, uid_t *restrict euid, uid_t *restrict suid) +{ + return syscall(getresuid, ruid, euid, suid); +} diff --git a/lib/libc/unistd/getsid.c b/lib/libc/unistd/getsid.c new file mode 100644 index 00000000..e0a06780 --- /dev/null +++ b/lib/libc/unistd/getsid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +pid_t getsid(pid_t pid) +{ + return syscall(getsid, pid); +} diff --git a/lib/libc/unistd/getuid.c b/lib/libc/unistd/getuid.c new file mode 100644 index 00000000..9223ae6f --- /dev/null +++ b/lib/libc/unistd/getuid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +uid_t getuid(void) +{ + return syscall(getuid); +} diff --git a/lib/libc/unistd/isatty.c b/lib/libc/unistd/isatty.c new file mode 100644 index 00000000..afb15460 --- /dev/null +++ b/lib/libc/unistd/isatty.c @@ -0,0 +1,10 @@ +#include <termios.h> +#include <unistd.h> +#include <syscall.h> +#include <asm-generic/ioctls.h> + +int isatty(int fildes) +{ + struct winsize winsize; + return 1 + syscall(ioctl, fildes, TIOCGWINSZ, &winsize); +} diff --git a/lib/libc/unistd/lchown.c b/lib/libc/unistd/lchown.c new file mode 100644 index 00000000..a18be4c6 --- /dev/null +++ b/lib/libc/unistd/lchown.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int lchown(const char *path, uid_t owner, gid_t group) +{ + return syscall(lchown, path, owner, group); +} diff --git a/lib/libc/unistd/link.c b/lib/libc/unistd/link.c new file mode 100644 index 00000000..07204ed0 --- /dev/null +++ b/lib/libc/unistd/link.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int link(const char *path1, const char *path2) +{ + return syscall(link, path1, path2); +} diff --git a/lib/libc/unistd/linkat.c b/lib/libc/unistd/linkat.c new file mode 100644 index 00000000..72dca11e --- /dev/null +++ b/lib/libc/unistd/linkat.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int linkat(int fd1, const char *path1, int fd2, const char *path2, int flag) +{ + return syscall(linkat, fd1, path1, fd2, path2, flag); +} diff --git a/lib/libc/unistd/lockf.c b/lib/libc/unistd/lockf.c new file mode 100644 index 00000000..8b807c34 --- /dev/null +++ b/lib/libc/unistd/lockf.c @@ -0,0 +1,8 @@ +#include <unistd.h> +#include <syscall.h> + +int lockf(int fildes, int function, off_t size) +{ + // TODO + return 0; +} diff --git a/lib/libc/unistd/lseek.c b/lib/libc/unistd/lseek.c new file mode 100644 index 00000000..d8b41f88 --- /dev/null +++ b/lib/libc/unistd/lseek.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +off_t lseek(int fildes, off_t offset, int whence) +{ + return syscall(lseek, fildes, offset, whence); +} diff --git a/lib/libc/unistd/nice.c b/lib/libc/unistd/nice.c new file mode 100644 index 00000000..3b240c93 --- /dev/null +++ b/lib/libc/unistd/nice.c @@ -0,0 +1,8 @@ +#include <unistd.h> +#include <syscall.h> + +int nice(int incr) +{ + // TODO: needs getpriority and setpriority from sys/resouce.h + return 0; +} diff --git a/lib/libc/unistd/pause.c b/lib/libc/unistd/pause.c new file mode 100644 index 00000000..bd959bc5 --- /dev/null +++ b/lib/libc/unistd/pause.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int pause(void) +{ + return syscall(pause); +} diff --git a/lib/libc/unistd/pipe.c b/lib/libc/unistd/pipe.c new file mode 100644 index 00000000..4f8e0e98 --- /dev/null +++ b/lib/libc/unistd/pipe.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int pipe(int fildes[2]) +{ + return syscall(pipe, fildes); +} diff --git a/lib/libc/unistd/pipe2.c b/lib/libc/unistd/pipe2.c new file mode 100644 index 00000000..a28aecdd --- /dev/null +++ b/lib/libc/unistd/pipe2.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int pipe2(int fildes[2], int flag) +{ + return syscall(pipe2, fildes, flag); +} diff --git a/lib/libc/unistd/posix_close.c b/lib/libc/unistd/posix_close.c new file mode 100644 index 00000000..fe44a7b9 --- /dev/null +++ b/lib/libc/unistd/posix_close.c @@ -0,0 +1,7 @@ +#include <libc.h> +#include <syscall.h> + +int posix_close(int fildes, int unused flag) +{ + return syscall(close, fildes); +} diff --git a/lib/libc/unistd/pread.c b/lib/libc/unistd/pread.c new file mode 100644 index 00000000..ad8e71b0 --- /dev/null +++ b/lib/libc/unistd/pread.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +ssize_t pread(int fildes, void *buf, size_t nbyte, off_t offset) +{ + return syscall(pread, fildes, buf, nbyte, offset); +} diff --git a/lib/libc/unistd/pwrite.c b/lib/libc/unistd/pwrite.c new file mode 100644 index 00000000..8a2eadbe --- /dev/null +++ b/lib/libc/unistd/pwrite.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +ssize_t pwrite(int fildes, const void *buf, size_t nbyte, off_t offset) +{ + return syscall(pwrite, fildes, buf, nbyte, offset); +} diff --git a/lib/libc/unistd/read.c b/lib/libc/unistd/read.c new file mode 100644 index 00000000..54c29586 --- /dev/null +++ b/lib/libc/unistd/read.c @@ -0,0 +1,7 @@ +#include <syscall.h> +#include <unistd.h> + +ssize_t read(int fildes, void *buf, size_t nbyte) +{ + return syscall(read, fildes, buf, nbyte); +} diff --git a/lib/libc/unistd/readlink.c b/lib/libc/unistd/readlink.c new file mode 100644 index 00000000..8587f526 --- /dev/null +++ b/lib/libc/unistd/readlink.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +ssize_t readlink(const char *restrict path, char *restrict buf, size_t bufsize) +{ + return syscall(readlink, path, buf, bufsize); +} diff --git a/lib/libc/unistd/readlinkat.c b/lib/libc/unistd/readlinkat.c new file mode 100644 index 00000000..d2a87b2b --- /dev/null +++ b/lib/libc/unistd/readlinkat.c @@ -0,0 +1,8 @@ +#include <unistd.h> +#include <syscall.h> + +ssize_t readlinkat(int fd, const char *restrict path, char *restrict buf, + size_t bufsize) +{ + return syscall(readlinkat, fd, path, buf, bufsize); +} diff --git a/lib/libc/unistd/rmdir.c b/lib/libc/unistd/rmdir.c new file mode 100644 index 00000000..5aab225c --- /dev/null +++ b/lib/libc/unistd/rmdir.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int rmdir(const char *path) +{ + return syscall(rmdir, path); +} diff --git a/lib/libc/unistd/setegid.c b/lib/libc/unistd/setegid.c new file mode 100644 index 00000000..7fd9adb6 --- /dev/null +++ b/lib/libc/unistd/setegid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int setegid(gid_t gid) +{ + return syscall(setresgid, -1, gid, -1); +} diff --git a/lib/libc/unistd/seteuid.c b/lib/libc/unistd/seteuid.c new file mode 100644 index 00000000..6d86bee5 --- /dev/null +++ b/lib/libc/unistd/seteuid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int seteuid(uid_t uid) +{ + return syscall(setresuid, -1, uid, -1); +} diff --git a/lib/libc/unistd/setgid.c b/lib/libc/unistd/setgid.c new file mode 100644 index 00000000..aa07c330 --- /dev/null +++ b/lib/libc/unistd/setgid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int setgid(gid_t gid) +{ + return syscall(setgid, gid); +} diff --git a/lib/libc/unistd/setpgid.c b/lib/libc/unistd/setpgid.c new file mode 100644 index 00000000..e4fd6efd --- /dev/null +++ b/lib/libc/unistd/setpgid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int setpgid(pid_t pid, pid_t pgid) +{ + return syscall(setpgid, pid, pgid); +} diff --git a/lib/libc/unistd/setregid.c b/lib/libc/unistd/setregid.c new file mode 100644 index 00000000..633f22a6 --- /dev/null +++ b/lib/libc/unistd/setregid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int setregid(gid_t rgid, gid_t egid) +{ + return syscall(setregid, rgid, egid); +} diff --git a/lib/libc/unistd/setresgid.c b/lib/libc/unistd/setresgid.c new file mode 100644 index 00000000..6de609fa --- /dev/null +++ b/lib/libc/unistd/setresgid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int setresgid(gid_t rgid, gid_t egid, gid_t sgid) +{ + return syscall(setresgid, rgid, egid, sgid); +} diff --git a/lib/libc/unistd/setresuid.c b/lib/libc/unistd/setresuid.c new file mode 100644 index 00000000..1fd74baa --- /dev/null +++ b/lib/libc/unistd/setresuid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int setresuid(uid_t ruid, uid_t euid, uid_t suid) +{ + return syscall(setresuid, ruid, euid, suid); +} diff --git a/lib/libc/unistd/setreuid.c b/lib/libc/unistd/setreuid.c new file mode 100644 index 00000000..5f277ba3 --- /dev/null +++ b/lib/libc/unistd/setreuid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int setreuid(uid_t ruid, uid_t euid) +{ + return syscall(setreuid, ruid, euid); +} diff --git a/lib/libc/unistd/setsid.c b/lib/libc/unistd/setsid.c new file mode 100644 index 00000000..16b812e0 --- /dev/null +++ b/lib/libc/unistd/setsid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +pid_t setsid(void) +{ + return syscall(setsid); +} diff --git a/lib/libc/unistd/setuid.c b/lib/libc/unistd/setuid.c new file mode 100644 index 00000000..ab8ff73f --- /dev/null +++ b/lib/libc/unistd/setuid.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int setuid(uid_t uid) +{ + return syscall(setuid, uid); +} diff --git a/lib/libc/unistd/sleep.c b/lib/libc/unistd/sleep.c new file mode 100644 index 00000000..b2aef854 --- /dev/null +++ b/lib/libc/unistd/sleep.c @@ -0,0 +1,10 @@ +#include <time.h> +#include <unistd.h> + +unsigned sleep(unsigned seconds) +{ + struct timespec tv = { .tv_sec = seconds, .tv_nsec = 0 }; + if (nanosleep(&tv, &tv)) + return tv.tv_sec; + return 0; +} diff --git a/lib/libc/unistd/swab.c b/lib/libc/unistd/swab.c new file mode 100644 index 00000000..5e4e7e3b --- /dev/null +++ b/lib/libc/unistd/swab.c @@ -0,0 +1,17 @@ +#include <unistd.h> + +void swab(const void *restrict src, void *restrict dest, ssize_t nbytes) +{ + const char *s = src; + char *d = dest; + + if (nbytes <= 0) + return; + + ssize_t n = nbytes & ~1; + + for (ssize_t i = 0; i < n; i += 2) { + d[i] = s[i + 1]; + d[i + 1] = s[i]; + } +} diff --git a/lib/libc/unistd/symlink.c b/lib/libc/unistd/symlink.c new file mode 100644 index 00000000..0b84148e --- /dev/null +++ b/lib/libc/unistd/symlink.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int symlink(const char *path1, const char *path2) +{ + return syscall(symlink, path1, path2); +} diff --git a/lib/libc/unistd/symlinkat.c b/lib/libc/unistd/symlinkat.c new file mode 100644 index 00000000..d4dd2ee0 --- /dev/null +++ b/lib/libc/unistd/symlinkat.c @@ -0,0 +1,7 @@ +#include <syscall.h> + +int symlinkat(const char *path1, int fd, const char *path2) + +{ + return syscall(symlinkat, path1, fd, path2); +} diff --git a/lib/libc/unistd/sync.c b/lib/libc/unistd/sync.c new file mode 100644 index 00000000..e655213b --- /dev/null +++ b/lib/libc/unistd/sync.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +void sync(void) +{ + syscall(sync); +} diff --git a/lib/libc/unistd/truncate.c b/lib/libc/unistd/truncate.c new file mode 100644 index 00000000..2611d40a --- /dev/null +++ b/lib/libc/unistd/truncate.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +int truncate(const char *path, off_t length) +{ + return syscall(truncate, path, length); +} diff --git a/lib/libc/unistd/unlink.c b/lib/libc/unistd/unlink.c new file mode 100644 index 00000000..1d3859f9 --- /dev/null +++ b/lib/libc/unistd/unlink.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int unlink(const char *path) +{ + return syscall(unlink, path); +} diff --git a/lib/libc/unistd/unlinkat.c b/lib/libc/unistd/unlinkat.c new file mode 100644 index 00000000..837105a1 --- /dev/null +++ b/lib/libc/unistd/unlinkat.c @@ -0,0 +1,6 @@ +#include <syscall.h> + +int unlinkat(int fd, const char *path, int flag) +{ + return syscall(unlinkat, fd, path, flag); +} diff --git a/lib/libc/unistd/write.c b/lib/libc/unistd/write.c new file mode 100644 index 00000000..c7bd5dbc --- /dev/null +++ b/lib/libc/unistd/write.c @@ -0,0 +1,7 @@ +#include <unistd.h> +#include <syscall.h> + +ssize_t write(int fd, const void *buf, size_t count) +{ + return syscall(write, fd, buf, count); +} diff --git a/lib/libc/utsname/uname.c b/lib/libc/utsname/uname.c new file mode 100644 index 00000000..babf5685 --- /dev/null +++ b/lib/libc/utsname/uname.c @@ -0,0 +1,7 @@ +#include <sys/utsname.h> +#include <syscall.h> + +int uname(struct utsname *name) +{ + return syscall(uname, name); +} diff --git a/lib/libc/wait/wait.c b/lib/libc/wait/wait.c new file mode 100644 index 00000000..f0583bfc --- /dev/null +++ b/lib/libc/wait/wait.c @@ -0,0 +1,7 @@ +#include <sys/wait.h> +#include <syscall.h> + +pid_t wait(int *stat_loc) +{ + return syscall(wait4, -1, stat_loc, 0, 0); +} diff --git a/lib/libc/wait/waitid.c b/lib/libc/wait/waitid.c new file mode 100644 index 00000000..5b6237b8 --- /dev/null +++ b/lib/libc/wait/waitid.c @@ -0,0 +1,7 @@ +#include <sys/wait.h> +#include <syscall.h> + +int waitid(idtype_t idtype, id_t id, siginfo_t *infop, int options) +{ + return syscall(waitid, idtype, id, infop, options); +} diff --git a/lib/libc/wait/waitpid.c b/lib/libc/wait/waitpid.c new file mode 100644 index 00000000..a5746efc --- /dev/null +++ b/lib/libc/wait/waitpid.c @@ -0,0 +1,7 @@ +#include <sys/wait.h> +#include <syscall.h> + +pid_t waitpid(pid_t pid, int *stat_loc, int options) +{ + return syscall(wait4, pid, stat_loc, options, 0); +} diff --git a/lib/libc/wchar/wctob.c b/lib/libc/wchar/wctob.c new file mode 100644 index 00000000..702e3f75 --- /dev/null +++ b/lib/libc/wchar/wctob.c @@ -0,0 +1,16 @@ +#include <stdlib.h> +#include <wchar.h> +#include <stdio.h> + +#define IS_CODEUNIT(c) ((unsigned)(c) - 0xdf80 < 0x80) + +int wctob(wint_t c) +{ + if (c < 128U) + return (int)c; + + if (MB_CUR_MAX == 1 && IS_CODEUNIT(c)) + return (unsigned char)c; + + return EOF; +} diff --git a/lib/libc/wctype/iswalnum.c b/lib/libc/wctype/iswalnum.c new file mode 100644 index 00000000..3eb2f14f --- /dev/null +++ b/lib/libc/wctype/iswalnum.c @@ -0,0 +1,12 @@ +#include <libc.h> +#include <wctype.h> + +int iswalnum(wint_t wc) +{ + return iswdigit(wc) || iswalpha(wc); +} + +weak int iswalnum_l(wint_t wc, locale_t unused locale) +{ + return iswalnum(wc); +} diff --git a/lib/libc/wctype/iswalpha.c b/lib/libc/wctype/iswalpha.c new file mode 100644 index 00000000..17c8508c --- /dev/null +++ b/lib/libc/wctype/iswalpha.c @@ -0,0 +1,22 @@ +#include <libc.h> +#include <wctype.h> + +int iswalpha(wint_t wc) +{ + const unsigned char t[] = { +#include <__alpha.h> + }; + + if (wc < 0x20000U) + return (t[t[wc >> 8] * 32 + ((wc & 255) >> 3)] >> (wc & 7)) & 1; + + if (wc < 0x2fffeU) + return 1; + + return 0; +} + +weak int iswalpha_l(wint_t wc, locale_t unused locale) +{ + return iswalpha(wc); +} diff --git a/lib/libc/wctype/iswblank.c b/lib/libc/wctype/iswblank.c new file mode 100644 index 00000000..61664162 --- /dev/null +++ b/lib/libc/wctype/iswblank.c @@ -0,0 +1,13 @@ +#include <libc.h> +#include <wctype.h> +#include <ctype.h> + +int iwsblank(wint_t wc) +{ + return isblank((unsigned char)wc); +} + +weak int iswblank_l(wint_t c, locale_t unused locale) +{ + return iswblank(c); +} diff --git a/lib/libc/wctype/iswdigit.c b/lib/libc/wctype/iswdigit.c new file mode 100644 index 00000000..e775f561 --- /dev/null +++ b/lib/libc/wctype/iswdigit.c @@ -0,0 +1,12 @@ +#include <libc.h> +#include <wctype.h> + +int iswdigit(wint_t wc) +{ + return (wc >= L'0' && wc <= L'9'); +} + +weak int iswdigit_l(wint_t wc, locale_t unused locale) +{ + return iswdigit(wc); +} diff --git a/lib/libc/wctype/iswgraph.c b/lib/libc/wctype/iswgraph.c new file mode 100644 index 00000000..00ab6cca --- /dev/null +++ b/lib/libc/wctype/iswgraph.c @@ -0,0 +1,12 @@ +#include <libc.h> +#include <wctype.h> + +int iswgraph(wint_t wc) +{ + return iswprint(wc) && !iswspace(wc); +} + +weak int iswgraph_l(wint_t wc, locale_t unused locale) +{ + return iswgraph(wc); +} diff --git a/lib/libc/wctype/iswlower.c b/lib/libc/wctype/iswlower.c new file mode 100644 index 00000000..dea58f3a --- /dev/null +++ b/lib/libc/wctype/iswlower.c @@ -0,0 +1,12 @@ +#include <libc.h> +#include <wctype.h> + +int iswlower(wint_t wc) +{ + return towupper(wc) != wc; +} + +weak int islower_l(wint_t wc, locale_t unused locale) +{ + return iswlower(wc); +} diff --git a/lib/libc/wctype/iswprint.c b/lib/libc/wctype/iswprint.c new file mode 100644 index 00000000..f0b26fbf --- /dev/null +++ b/lib/libc/wctype/iswprint.c @@ -0,0 +1,14 @@ +#include <libc.h> +#include <wctype.h> + +int iswprint(wint_t wc) +{ + return (wc >= 0x20 && wc <= 0x7E) || + (wc >= 0xA0 && wc <= 0x10FFFF && (wc < 0xFDD0 || wc > 0xFDEF) && + (wc & 0xFFFE) != 0xFFFE); +} + +weak int iswprint_l(wint_t wc, locale_t unused locale) +{ + return iswprint(wc); +} diff --git a/lib/libc/wctype/iswpunct.c b/lib/libc/wctype/iswpunct.c new file mode 100644 index 00000000..d7ed6487 --- /dev/null +++ b/lib/libc/wctype/iswpunct.c @@ -0,0 +1,327 @@ +#include <libc.h> +#include <wctype.h> + +int iswpunct(wint_t wc) +{ + const unsigned char t[] = { + 18, 16, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, + 30, 31, 32, 33, 16, 16, 34, 35, 16, 36, 37, 38, 39, + 40, 41, 42, 43, 16, 44, 45, 46, 17, 17, 47, 17, 17, + 17, 17, 17, 17, 48, 49, 50, 51, 52, 53, 54, 55, 17, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 56, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 57, 16, 58, 59, 60, + 61, 62, 63, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 64, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 65, 16, 16, 66, 16, 67, 68, 69, 16, 70, 71, 72, + 16, 73, 16, 16, 74, 75, 76, 77, 78, 16, 79, 80, 81, + 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 16, 92, 93, + 94, 95, 16, 16, 16, 16, 96, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 97, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 98, 99, + 16, 16, 100, 101, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 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0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 56, 0, 0, 1, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 128, 0, 0, 0, 0, 0, 2, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 252, 255, 3, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 192, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 48, 255, 255, 255, 3, 255, 255, 255, 255, + 255, 255, 247, 255, 127, 15, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128, 254, 255, + 0, 252, 1, 0, 0, 248, 1, 0, 0, 248, 63, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 127, 127, 0, 48, 135, 255, 255, 255, 255, 255, 143, 255, 0, + 0, 0, 0, 0, 0, 224, 255, 255, 127, 255, 15, 1, 0, + 0, 0, 0, 0, 255, 255, 255, 255, 255, 63, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, + 255, 255, 15, 0, 0, 0, 0, 15, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 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0, 0, 128, 0, + 0, 0, 2, 0, 0, 0, 2, 0, 0, 8, 0, 0, 0, + 0, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 15, 0, 248, 254, 255, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 127, 0, 0, 128, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 240, 0, 128, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 128, 255, 127, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 112, 7, 0, + 192, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 254, 255, 255, 255, + 255, 255, 255, 255, 31, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 254, 255, 255, 255, 255, 255, 255, 63, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, + 255, 255, 255, 255, 255, 15, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 15, 0, 255, 127, 254, 255, 254, 255, + 254, 255, 255, 255, 63, 0, 255, 31, 255, 255, 255, 255, 0, + 0, 0, 252, 0, 0, 0, 28, 0, 0, 0, 252, 255, 255, + 255, 31, 0, 0, 0, 0, 0, 0, 192, 255, 255, 255, 7, + 0, 255, 255, 255, 255, 255, 15, 255, 1, 3, 0, 63, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 63, 0, 255, 31, 255, 7, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 15, + 0, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 1, + 255, 15, 0, 0, 255, 15, 255, 255, 255, 255, 255, 255, 255, + 0, 255, 3, 255, 255, 255, 255, 255, 0, 255, 255, 255, 63, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 239, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 123, 252, + 255, 255, 255, 255, 231, 199, 255, 255, 255, 231, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 15, 0, 255, 63, 15, 7, 7, 0, 63, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, + + }; + + if (wc < 0x20000U) + return (t[t[wc >> 8] * 32 + ((wc & 255) >> 3)] >> (wc & 7)) & 1; + + return 0; +} + +weak int iswctype_l(wint_t wc, wctype_t charclass, locale_t unused locale) +{ + return iswctype(wc, charclass); +} diff --git a/lib/libc/wctype/iswspace.c b/lib/libc/wctype/iswspace.c new file mode 100644 index 00000000..3b6806af --- /dev/null +++ b/lib/libc/wctype/iswspace.c @@ -0,0 +1,20 @@ +#include <libc.h> +#include <wchar.h> +#include <wctype.h> + +int iswspace(wint_t wc) +{ + const wchar_t t[] = { L' ', L'\t', L'\n', L'\r', 11, 12, + 0x0085, 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, + 0x2005, 0x2006, 0x2008, 0x2009, 0x200a, 0x2028, + 0x2029, 0x205f, 0x3000, 0 + + }; + + return wc && wcschr(t, (wchar_t)wc) != NULL; +} + +weak int iswspace_l(wint_t wc, locale_t unused locale) +{ + return iswspace(wc); +} diff --git a/lib/libc/wctype/iswupper.c b/lib/libc/wctype/iswupper.c new file mode 100644 index 00000000..afe12049 --- /dev/null +++ b/lib/libc/wctype/iswupper.c @@ -0,0 +1,12 @@ +#include <libc.h> +#include <wctype.h> + +int iswupper(wint_t wc) +{ + return towlower(wc) != wc; +} + +weak int iswupper_l(wint_t wc, locale_t unused locale) +{ + return iswupper(wc); +} diff --git a/lib/libc/wctype/iswxdigit.c b/lib/libc/wctype/iswxdigit.c new file mode 100644 index 00000000..fae88730 --- /dev/null +++ b/lib/libc/wctype/iswxdigit.c @@ -0,0 +1,12 @@ +#include <libc.h> +#include <wctype.h> + +int iswxdigit(wint_t wc) +{ + return (unsigned)(wc - '0') < 10 || (unsigned)((wc | 32) - 'a') < 6; +} + +weak int iswxdigit_l(wint_t wc, locale_t unused locale) +{ + return iswxdigit(wc); +} diff --git a/lib/libc/wctype/towctrans.c b/lib/libc/wctype/towctrans.c new file mode 100644 index 00000000..9e7f3b63 --- /dev/null +++ b/lib/libc/wctype/towctrans.c @@ -0,0 +1,348 @@ +#include <libc.h> +#include <ctype.h> +#include <string.h> +#include <wchar.h> +#include <wctype.h> + +/* From embeddedartistry/libc */ +#define CASEMAP(u1, u2, l) { (u1), (l) - (u1), (u2) - (u1) + 1 } +#define CASELACE(u1, u2) CASEMAP((u1), (u2), (u1) + 1) + +static const struct { + unsigned short upper; + signed char lower; + unsigned char len; +} casemaps[] = { + CASEMAP(0xc0, 0xde, 0xe0), + + CASELACE(0x0100, 0x012e), CASELACE(0x0132, 0x0136), + CASELACE(0x0139, 0x0147), CASELACE(0x014a, 0x0176), + CASELACE(0x0179, 0x017d), + + CASELACE(0x370, 0x372), CASEMAP(0x391, 0x3a1, 0x3b1), + CASEMAP(0x3a3, 0x3ab, 0x3c3), CASEMAP(0x400, 0x40f, 0x450), + CASEMAP(0x410, 0x42f, 0x430), + + CASELACE(0x460, 0x480), CASELACE(0x48a, 0x4be), + CASELACE(0x4c1, 0x4cd), CASELACE(0x4d0, 0x50e), + + CASELACE(0x514, 0x52e), CASEMAP(0x531, 0x556, 0x561), + + CASELACE(0x01a0, 0x01a4), CASELACE(0x01b3, 0x01b5), + CASELACE(0x01cd, 0x01db), CASELACE(0x01de, 0x01ee), + CASELACE(0x01f8, 0x021e), CASELACE(0x0222, 0x0232), + CASELACE(0x03d8, 0x03ee), + + CASELACE(0x1e00, 0x1e94), CASELACE(0x1ea0, 0x1efe), + + CASEMAP(0x1f08, 0x1f0f, 0x1f00), CASEMAP(0x1f18, 0x1f1d, 0x1f10), + CASEMAP(0x1f28, 0x1f2f, 0x1f20), CASEMAP(0x1f38, 0x1f3f, 0x1f30), + CASEMAP(0x1f48, 0x1f4d, 0x1f40), + + CASEMAP(0x1f68, 0x1f6f, 0x1f60), CASEMAP(0x1f88, 0x1f8f, 0x1f80), + CASEMAP(0x1f98, 0x1f9f, 0x1f90), CASEMAP(0x1fa8, 0x1faf, 0x1fa0), + CASEMAP(0x1fb8, 0x1fb9, 0x1fb0), CASEMAP(0x1fba, 0x1fbb, 0x1f70), + CASEMAP(0x1fc8, 0x1fcb, 0x1f72), CASEMAP(0x1fd8, 0x1fd9, 0x1fd0), + CASEMAP(0x1fda, 0x1fdb, 0x1f76), CASEMAP(0x1fe8, 0x1fe9, 0x1fe0), + CASEMAP(0x1fea, 0x1feb, 0x1f7a), CASEMAP(0x1ff8, 0x1ff9, 0x1f78), + CASEMAP(0x1ffa, 0x1ffb, 0x1f7c), + + CASEMAP(0x13f0, 0x13f5, 0x13f8), CASELACE(0xa698, 0xa69a), + CASELACE(0xa796, 0xa79e), + + CASELACE(0x246, 0x24e), CASELACE(0x510, 0x512), + CASEMAP(0x2160, 0x216f, 0x2170), CASEMAP(0x2c00, 0x2c2e, 0x2c30), + CASELACE(0x2c67, 0x2c6b), CASELACE(0x2c80, 0x2ce2), + CASELACE(0x2ceb, 0x2ced), + + CASELACE(0xa640, 0xa66c), CASELACE(0xa680, 0xa696), + + CASELACE(0xa722, 0xa72e), CASELACE(0xa732, 0xa76e), + CASELACE(0xa779, 0xa77b), CASELACE(0xa77e, 0xa786), + + CASELACE(0xa790, 0xa792), CASELACE(0xa7a0, 0xa7a8), + + CASELACE(0xa7b4, 0xa7b6), + + CASEMAP(0xff21, 0xff3a, 0xff41), { 0, 0, 0 } +}; + +static const unsigned short pairs[][2] = { { 'I', 0x0131 }, + { 'S', 0x017f }, + { 0x0130, 'i' }, + { 0x0178, 0x00ff }, + { 0x0181, 0x0253 }, + { 0x0182, 0x0183 }, + { 0x0184, 0x0185 }, + { 0x0186, 0x0254 }, + { 0x0187, 0x0188 }, + { 0x0189, 0x0256 }, + { 0x018a, 0x0257 }, + { 0x018b, 0x018c }, + { 0x018e, 0x01dd }, + { 0x018f, 0x0259 }, + { 0x0190, 0x025b }, + { 0x0191, 0x0192 }, + { 0x0193, 0x0260 }, + { 0x0194, 0x0263 }, + { 0x0196, 0x0269 }, + { 0x0197, 0x0268 }, + { 0x0198, 0x0199 }, + { 0x019c, 0x026f }, + { 0x019d, 0x0272 }, + { 0x019f, 0x0275 }, + { 0x01a6, 0x0280 }, + { 0x01a7, 0x01a8 }, + { 0x01a9, 0x0283 }, + { 0x01ac, 0x01ad }, + { 0x01ae, 0x0288 }, + { 0x01af, 0x01b0 }, + { 0x01b1, 0x028a }, + { 0x01b2, 0x028b }, + { 0x01b7, 0x0292 }, + { 0x01b8, 0x01b9 }, + { 0x01bc, 0x01bd }, + { 0x01c4, 0x01c6 }, + { 0x01c4, 0x01c5 }, + { 0x01c5, 0x01c6 }, + { 0x01c7, 0x01c9 }, + { 0x01c7, 0x01c8 }, + { 0x01c8, 0x01c9 }, + { 0x01ca, 0x01cc }, + { 0x01ca, 0x01cb }, + { 0x01cb, 0x01cc }, + { 0x01f1, 0x01f3 }, + { 0x01f1, 0x01f2 }, + { 0x01f2, 0x01f3 }, + { 0x01f4, 0x01f5 }, + { 0x01f6, 0x0195 }, + { 0x01f7, 0x01bf }, + { 0x0220, 0x019e }, + { 0x0386, 0x03ac }, + { 0x0388, 0x03ad }, + { 0x0389, 0x03ae }, + { 0x038a, 0x03af }, + { 0x038c, 0x03cc }, + { 0x038e, 0x03cd }, + { 0x038f, 0x03ce }, + { 0x0399, 0x0345 }, + { 0x0399, 0x1fbe }, + { 0x03a3, 0x03c2 }, + { 0x03f7, 0x03f8 }, + { 0x03fa, 0x03fb }, + { 0x1e60, 0x1e9b }, + { 0x1e9e, 0xdf }, + + { 0x1f59, 0x1f51 }, + { 0x1f5b, 0x1f53 }, + { 0x1f5d, 0x1f55 }, + { 0x1f5f, 0x1f57 }, + { 0x1fbc, 0x1fb3 }, + { 0x1fcc, 0x1fc3 }, + { 0x1fec, 0x1fe5 }, + { 0x1ffc, 0x1ff3 }, + + { 0x23a, 0x2c65 }, + { 0x23b, 0x23c }, + { 0x23d, 0x19a }, + { 0x23e, 0x2c66 }, + { 0x241, 0x242 }, + { 0x243, 0x180 }, + { 0x244, 0x289 }, + { 0x245, 0x28c }, + { 0x3f4, 0x3b8 }, + { 0x3f9, 0x3f2 }, + { 0x3fd, 0x37b }, + { 0x3fe, 0x37c }, + { 0x3ff, 0x37d }, + { 0x4c0, 0x4cf }, + + { 0x2126, 0x3c9 }, + { 0x212a, 'k' }, + { 0x212b, 0xe5 }, + { 0x2132, 0x214e }, + { 0x2183, 0x2184 }, + { 0x2c60, 0x2c61 }, + { 0x2c62, 0x26b }, + { 0x2c63, 0x1d7d }, + { 0x2c64, 0x27d }, + { 0x2c6d, 0x251 }, + { 0x2c6e, 0x271 }, + { 0x2c6f, 0x250 }, + { 0x2c70, 0x252 }, + { 0x2c72, 0x2c73 }, + { 0x2c75, 0x2c76 }, + { 0x2c7e, 0x23f }, + { 0x2c7f, 0x240 }, + { 0x2cf2, 0x2cf3 }, + + { 0xa77d, 0x1d79 }, + { 0xa78b, 0xa78c }, + { 0xa78d, 0x265 }, + { 0xa7aa, 0x266 }, + + { 0x10c7, 0x2d27 }, + { 0x10cd, 0x2d2d }, + + /* bogus greek 'symbol' letters */ + { 0x376, 0x377 }, + { 0x39c, 0xb5 }, + { 0x392, 0x3d0 }, + { 0x398, 0x3d1 }, + { 0x3a6, 0x3d5 }, + { 0x3a0, 0x3d6 }, + { 0x39a, 0x3f0 }, + { 0x3a1, 0x3f1 }, + { 0x395, 0x3f5 }, + { 0x3cf, 0x3d7 }, + + { 0xa7ab, 0x25c }, + { 0xa7ac, 0x261 }, + { 0xa7ad, 0x26c }, + { 0xa7ae, 0x26a }, + { 0xa7b0, 0x29e }, + { 0xa7b1, 0x287 }, + { 0xa7b2, 0x29d }, + { 0xa7b3, 0xab53 }, + + /* special cyrillic lowercase forms + */ + { 0x412, 0x1c80 }, + { 0x414, 0x1c81 }, + { 0x41e, 0x1c82 }, + { 0x421, 0x1c83 }, + { 0x422, 0x1c84 }, + { 0x422, 0x1c85 }, + { 0x42a, 0x1c86 }, + { 0x462, 0x1c87 }, + { 0xa64a, 0x1c88 }, + + { 0, 0 } }; + +wchar_t __towcase(wchar_t wc, int lower) +{ + int i; + int lmul = 2 * lower - 1; + int lmask = lower - 1; + /* no letters with case in these large ranges */ + if (!iswalpha((wint_t)wc) || (unsigned)wc - 0x0600 <= 0x0fff - 0x0600 || + (unsigned)wc - 0x2e00 <= 0xa63f - 0x2e00 || + (unsigned)wc - 0xa800 <= 0xab52 - 0xa800 || + (unsigned)wc - 0xabc0 <= 0xfeff - 0xabc0) { + return wc; + } + + /* special case because the diff between upper/lower is too big */ + if (lower && (unsigned)wc - 0x10a0 < 0x2e) { + if (wc > 0x10c5 && wc != 0x10c7 && wc != 0x10cd) { + return wc; + } + + return wc + 0x2d00 - 0x10a0; + } + + if (!lower && (unsigned)wc - 0x2d00 < 0x26) { + if (wc > 0x2d25 && wc != 0x2d27 && wc != 0x2d2d) { + return wc; + } + + return wc + 0x10a0 - 0x2d00; + } + + if (lower && (unsigned)wc - 0x13a0 < 0x50) { + return wc + 0xab70 - 0x13a0; + } + + if (!lower && (unsigned)wc - 0xab70 < 0x50) { + return wc + 0x13a0 - 0xab70; + } + + for (i = 0; casemaps[i].len; i++) { + int base = casemaps[i].upper + (lmask & casemaps[i].lower); + if (wc - (wchar_t)base < casemaps[i].len) { + if (casemaps[i].lower == 1) { + return wc + (wchar_t)lower - + ((wc - casemaps[i].upper) & 1); + } + return wc + (wchar_t)(lmul * casemaps[i].lower); + } + } + + for (i = 0; pairs[i][1 - lower]; i++) { + if (pairs[i][1 - lower] == wc) { + return pairs[i][lower]; + } + } + + if (wc - (wchar_t)(0x10428 - 0x28 * lower) < 0x28) { + return wc - (wchar_t)(0x28 + 0x50 * lower); + } + + if (wc - (wchar_t)(0x104d8 - 0x28 * lower) < 0x24) { + return wc - (wchar_t)(0x28 + 0x50 * lower); + } + + if (wc - (wchar_t)(0x10cc0 - 0x40 * lower) < 0x33) { + return wc - (wchar_t)(0x40 + 0x80 * lower); + } + + if (wc - (wchar_t)(0x118c0 - 0x20 * lower) < 0x20) { + return wc - (wchar_t)(0x20 + 0x40 * lower); + } + + if (wc - (wchar_t)(0x1e922 - 0x22 * lower) < 0x22) { + return wc - (wchar_t)(0x22 + 0x44 * lower); + } + + return wc; +} + +wint_t towlower(wint_t wc) +{ + return (wint_t)(wc < 128 ? (wint_t)tolower((int)wc) : + (wint_t)__towcase((wchar_t)wc, 1)); +} + +weak wint_t towlower_l(wint_t wc, locale_t unused locale) +{ + return towlower(wc); +} + +wint_t towupper(wint_t wc) +{ + return (wint_t)(wc < 128 ? (wint_t)toupper((int)wc) : + (wint_t)__towcase((wchar_t)wc, 0)); +} + +weak wint_t towupper_l(wint_t wc, locale_t unused locale) +{ + return towupper(wc); +} + +wctrans_t wctrans(const char *class) +{ + if (!strcmp(class, "toupper")) + return (wctrans_t)1; + if (!strcmp(class, "tolower")) + return (wctrans_t)2; + return 0; +} + +weak wctrans_t wctrans_l(const char *class, locale_t unused locale) +{ + return wctrans(class); +} + +wint_t towctrans(wint_t wc, wctrans_t desc) +{ + if (desc == (wctrans_t)1) + return towupper(wc); + if (desc == (wctrans_t)2) + return towlower(wc); + return wc; +} + +weak wint_t towctrans_l(wint_t wc, wctrans_t desc, locale_t unused locale) +{ + return towctrans(wc, desc); +} diff --git a/lib/libc/wctype/wctype.c b/lib/libc/wctype/wctype.c new file mode 100644 index 00000000..0495ba8c --- /dev/null +++ b/lib/libc/wctype/wctype.c @@ -0,0 +1,32 @@ +#include <libc.h> +#include <wctype.h> +#include <string.h> + +wctype_t wctype(const char *property) +{ + int i; + const char *ptr; + static const char n[] = "alnum\0" + "alpha\0" + "blank\0" + "cntrl\0" + "digit\0" + "graph\0" + "lower\0" + "print\0" + "punct\0" + "space\0" + "upper\0" + "xdigit"; + + for (i = 1, ptr = n; *ptr; i++, ptr += strlen(ptr) + 1) + if (!strcmp(property, ptr)) + return i; + + return 0; +} + +weak wctype_t wctype_l(const char *property, locale_t unused locale) +{ + return wctype(property); +} |