1#ifndef LIBC_H 2#define LIBC_H 3 4#include <stdlib.h> 5#include <stdio.h> 6#include <limits.h> 7 8struct __locale_map; 9 10struct __locale_struct { 11 const struct __locale_map *volatile cat[6]; 12}; 13 14struct tls_module { 15 struct tls_module *next; 16 void *image; 17 size_t len, size, align, offset; 18}; 19 20struct __libc { 21 int can_do_threads; 22 int threaded; 23 int secure; 24 volatile int threads_minus_1; 25 size_t *auxv; 26 struct tls_module *tls_head; 27 size_t tls_size, tls_align, tls_cnt; 28 size_t page_size; 29 struct __locale_struct global_locale; 30}; 31 32#ifndef PAGE_SIZE 33#define PAGE_SIZE libc.page_size 34#endif 35 36#ifdef __PIC__ 37#define ATTR_LIBC_VISIBILITY __attribute__((visibility("hidden"))) 38#else 39#define ATTR_LIBC_VISIBILITY 40#endif 41 42extern struct __libc __libc ATTR_LIBC_VISIBILITY; 43#define libc __libc 44 45extern size_t __hwcap ATTR_LIBC_VISIBILITY; 46extern size_t __sysinfo ATTR_LIBC_VISIBILITY; 47extern char *__progname, *__progname_full; 48 49/* Designed to avoid any overhead in non-threaded processes */ 50void __lock(volatile int *) ATTR_LIBC_VISIBILITY; 51void __unlock(volatile int *) ATTR_LIBC_VISIBILITY; 52int __lockfile(FILE *) ATTR_LIBC_VISIBILITY; 53void __unlockfile(FILE *) ATTR_LIBC_VISIBILITY; 54#define LOCK(x) __lock(x) 55#define UNLOCK(x) __unlock(x) 56 57void __synccall(void (*)(void *), void *); 58int __setxid(int, int, int, int); 59 60extern char **__environ; 61 62#undef weak_alias 63#define weak_alias(old, new) \ 64 extern __typeof(old) new __attribute__((weak, alias(#old))) 65 66#undef LFS64_2 67#define LFS64_2(x, y) weak_alias(x, y) 68 69#undef LFS64 70#define LFS64(x) LFS64_2(x, x##64) 71 72#endif 73