8 void (*lock)(volatile int *);
10 int (*atexit)(void (*)(void));
12 void (*ldso_fini)(void);
13 int *(*errno_location)(void);
14 volatile int threads_minus_1;
15 int (*rsyscall)(int, long, long, long, long, long, long);
16 void (**tsd_keys)(void *);
17 void (*fork_handler)(int);
20 void (*lockfile)(FILE *);
24 #if 100*__GNUC__+__GNUC_MINOR__ >= 303 || defined(__PCC__) || defined(__TINYC__)
25 extern struct __libc __libc __attribute__((visibility("hidden")));
28 #elif !defined(__PIC__)
29 extern struct __libc __libc;
33 #define USE_LIBC_ACCESSOR
34 extern struct __libc *__libc_loc(void) __attribute__((const));
35 #define libc (*__libc_loc())
40 /* Designed to avoid any overhead in non-threaded processes */
41 void __lock(volatile int *);
42 void __lockfile(FILE *);
43 #define LOCK(x) (libc.threads_minus_1 ? (__lock(x),1) : ((void)(x),1))
44 #define UNLOCK(x) (*(x)=0)
45 #define CANCELPT(x) (libc.cancelpt ? libc.cancelpt((x)),0 : (void)(x),0)
46 #define CANCELPT_BEGIN CANCELPT(1)
47 #define CANCELPT_END CANCELPT(0)
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)