summaryrefslogtreecommitdiff
path: root/src/internal/libc.h
blob: 7307a738e178b2fa20469d190a8a8b009f6870a4 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
#ifndef LIBC_H
#define LIBC_H

#include <stdlib.h>
#include <stdio.h>
#include <limits.h>

struct __locale_map;

struct __locale_struct {
	const struct __locale_map *volatile cat[6];
};

struct tls_module {
	struct tls_module *next;
	void *image;
	size_t len, size, align, offset;
};

struct __libc {
	int can_do_threads;
	int threaded;
	int secure;
	volatile int threads_minus_1;
	size_t *auxv;
	struct tls_module *tls_head;
	size_t tls_size, tls_align, tls_cnt;
	size_t page_size;
	struct __locale_struct global_locale;
};

#ifndef PAGE_SIZE
#define PAGE_SIZE libc.page_size
#endif

#define weak __attribute__((__weak__))
#define hidden __attribute__((__visibility__("hidden")))

extern hidden struct __libc __libc;
#define libc __libc

extern hidden size_t __hwcap;
extern hidden size_t __sysinfo;
extern char *__progname, *__progname_full;

/* Designed to avoid any overhead in non-threaded processes */
hidden void __lock(volatile int *);
hidden void __unlock(volatile int *);
hidden int __lockfile(FILE *);
hidden void __unlockfile(FILE *);
#define LOCK(x) __lock(x)
#define UNLOCK(x) __unlock(x)

void __synccall(void (*)(void *), void *);
int __setxid(int, int, int, int);

extern char **__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)

#undef LFS64
#define LFS64(x) LFS64_2(x, x##64)

#endif