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