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#ifndef LIBC_H
#define LIBC_H
#include <stdlib.h>
#include <stdio.h>
struct __libc {
int *(*errno_location)(void);
void (*cancelpt)(int);
void (*lock)(volatile int *);
void (*lockfile)(FILE *);
void (*fork_handler)(int);
void (*sigtimer)();
int (*atexit)(void (*)(void));
void (*fini)(void);
void (*ldso_fini)(void);
volatile int threads_minus_1;
int ofl_lock;
int (*rsyscall)(int, long, long, long, long, long, long);
FILE *ofl_head;
};
#if 100*__GNUC__+__GNUC_MINOR__ >= 303 || defined(__PCC__) || defined(__TINYC__)
extern struct __libc __libc __attribute__((visibility("hidden")));
#define libc __libc
#elif !defined(__PIC__)
extern struct __libc __libc;
#define libc __libc
#else
#define USE_LIBC_ACCESSOR
extern struct __libc *__libc_loc(void) __attribute__((const));
#define libc (*__libc_loc())
#endif
/* Designed to avoid any overhead in non-threaded processes */
void __lock(volatile int *);
void __lockfile(FILE *);
#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_TRY CANCELPT(0)
#define CANCELPT_END CANCELPT(-1)
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
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