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/include/libc.h | 48 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 lib/libc/internal/include/libc.h (limited to 'lib/libc/internal/include/libc.h') diff --git a/lib/libc/internal/include/libc.h b/lib/libc/internal/include/libc.h new file mode 100644 index 00000000..f06fa6d8 --- /dev/null +++ b/lib/libc/internal/include/libc.h @@ -0,0 +1,48 @@ +#ifndef __LIBC_LIBC_H +#define __LIBC_LIBC_H + +#include +#include +#include + +#define weak_reference(old, new) extern __typeof(old)((new)) __attribute__((__weak__, __alias__(#old))) + +struct tls { + struct tls *next; + void *data; + size_t size; + size_t align; + size_t length; + size_t offset; +}; + +struct libc { + size_t auxv[32]; + struct { + void *base; + size_t size; + } tls; + + enum { + LIBC_ENVP_TOUCHED = 1 << 0, + } flags; + + struct { + volatile atomic_flag abort; + volatile atomic_flag malloc; + volatile atomic_flag environ; + } lock; +}; + +extern struct libc __libc; + +#define panic(__errmsg) __libc_panic(__FILE__ ":" __STRING(__LINE__) ": ", __PRETTY_FUNCTION__, ": " __STRING(__errmsg)) + +#define panic_if(__cond, __errmsg) \ + do { \ + if (__predict_false(__cond)) \ + panic(__errmsg); \ + } while (0) + +__dead void __libc_panic(const char *, const char *, const char *); +#endif -- cgit v1.2.3