diff options
Diffstat (limited to 'src/internal/libc.h')
-rw-r--r-- | src/internal/libc.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/internal/libc.h b/src/internal/libc.h new file mode 100644 index 0000000..e353f36 --- /dev/null +++ b/src/internal/libc.h @@ -0,0 +1,43 @@ +#ifndef LIBC_H +#define LIBC_H + +#include <stdlib.h> +#include <stdio.h> + +#define libc __libc +extern struct libc { + void (*lock)(volatile int *); + void (*cancelpt)(int); + int (*atexit)(void (*)(void)); + void (*fini)(void); + void (*ldso_fini)(void); + int *(*errno_location)(void); + volatile int threads_minus_1; + int (*rsyscall)(int, long, long, long, long, long, long); + void (**tsd_keys)(void *); +} libc; + + +/* Designed to avoid any overhead in non-threaded processes */ +void __lock(volatile int *); +#define LOCK(x) (libc.threads_minus_1 ? (__lock(x),1) : ((void)(x),1)) +#define UNLOCK(x) (*(x)=0) +#define CANCELPT(x) (libc.cancelpt ? libc.cancelpt((x)),0 : (void)(x),0) +#define CANCELPT_BEGIN CANCELPT(1) +#define CANCELPT_END CANCELPT(0) + +extern char **__environ; +#define environ __environ + +#undef weak_alias +#define weak_alias(old, new) \ + extern __typeof(old) new __attribute__((weak, alias(#old))) + +#undef LFS64_2 +//#define LFS64_2(x, y) weak_alias(x, y) +#define LFS64_2(x, y) extern __typeof(x) y + +#undef LFS64 +#define LFS64(x) LFS64_2(x, x##64) + +#endif |