From 90dad97fc07f049383903a166631e2c257f9b8c1 Mon Sep 17 00:00:00 2001 From: Kacper Date: Tue, 16 Dec 2025 17:02:05 +0100 Subject: Add support for TLS in the libc --- lib/libc/internal/arch/x86_64/longjmp.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 lib/libc/internal/arch/x86_64/longjmp.c (limited to 'lib/libc/internal/arch/x86_64/longjmp.c') diff --git a/lib/libc/internal/arch/x86_64/longjmp.c b/lib/libc/internal/arch/x86_64/longjmp.c new file mode 100644 index 00000000..dbd18632 --- /dev/null +++ b/lib/libc/internal/arch/x86_64/longjmp.c @@ -0,0 +1,20 @@ +#include "bits/setjmp.h" // for jmp_buf + +#include // for longjmp + +__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"); +} -- cgit v1.2.3