8 int *(*errno_location)(void);
10 void (*lock)(volatile int *);
11 void (*lockfile)(FILE *);
12 void (*fork_handler)(int);
13 int (*rsyscall)(int, long, long, long, long, long, long);
14 int (*atexit)(void (*)(void));
16 void (*ldso_fini)(void);
17 volatile int threads_minus_1;
23 #if 100*__GNUC__+__GNUC_MINOR__ >= 303 || defined(__PCC__) || defined(__TINYC__)
24 extern struct __libc __libc __attribute__((visibility("hidden")));
27 #elif !defined(__PIC__)
28 extern struct __libc __libc;
32 #define USE_LIBC_ACCESSOR
33 extern struct __libc *__libc_loc(void) __attribute__((const));
34 #define libc (*__libc_loc())
39 /* Designed to avoid any overhead in non-threaded processes */
40 void __lock(volatile int *);
41 void __lockfile(FILE *);
42 #define LOCK(x) (libc.threads_minus_1 ? (__lock(x),1) : ((void)(x),1))
43 #define UNLOCK(x) (*(x)=0)
44 #define CANCELPT(x) (libc.cancelpt ? libc.cancelpt((x)),0 : (void)(x),0)
45 #define CANCELPT_BEGIN CANCELPT(1)
46 #define CANCELPT_TRY CANCELPT(0)
47 #define CANCELPT_END CANCELPT(-1)
49 extern char **__environ;
50 #define environ __environ
53 #define weak_alias(old, new) \
54 extern __typeof(old) new __attribute__((weak, alias(#old)))
57 //#define LFS64_2(x, y) weak_alias(x, y)
58 #define LFS64_2(x, y) extern __typeof(x) y
61 #define LFS64(x) LFS64_2(x, x##64)