1 #ifndef LIBC_H 2 #define LIBC_H 3 4 #include <stdlib.h> 5 #include <stdio.h> 6 #include <limits.h> 7 8 struct __locale_map; 9 10 struct __locale_struct { 11 const struct __locale_map *volatile cat[6]; 12 }; 13 14 struct tls_module { 15 struct tls_module *next; 16 void *image; 17 size_t len, size, align, offset; 18 }; 19 20 struct __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 42 extern struct __libc __libc ATTR_LIBC_VISIBILITY; 43 #define libc __libc 44 45 extern size_t __hwcap ATTR_LIBC_VISIBILITY; 46 extern size_t __sysinfo ATTR_LIBC_VISIBILITY; 47 extern char *__progname, *__progname_full; 48 49 /* Designed to avoid any overhead in non-threaded processes */ 50 void __lock(volatile int *) ATTR_LIBC_VISIBILITY; 51 void __unlock(volatile int *) ATTR_LIBC_VISIBILITY; 52 int __lockfile(FILE *) ATTR_LIBC_VISIBILITY; 53 void __unlockfile(FILE *) ATTR_LIBC_VISIBILITY; 54 #define LOCK(x) __lock(x) 55 #define UNLOCK(x) __unlock(x) 56 57 void __synccall(void (*)(void *), void *); 58 int __setxid(int, int, int, int); 59 60 extern 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