43 lines
1 KiB
C
43 lines
1 KiB
C
#ifndef LIBC_H
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#define LIBC_H
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#include <stdlib.h>
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#include <stdio.h>
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#define libc __libc
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extern struct libc {
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void (*lock)(volatile int *);
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void (*cancelpt)(int);
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int (*atexit)(void (*)(void));
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void (*fini)(void);
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void (*ldso_fini)(void);
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int *(*errno_location)(void);
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volatile int threads_minus_1;
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int (*rsyscall)(int, long, long, long, long, long, long);
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void (**tsd_keys)(void *);
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} libc;
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/* Designed to avoid any overhead in non-threaded processes */
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void __lock(volatile int *);
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#define LOCK(x) (libc.threads_minus_1 ? (__lock(x),1) : ((void)(x),1))
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#define UNLOCK(x) (*(x)=0)
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#define CANCELPT(x) (libc.cancelpt ? libc.cancelpt((x)),0 : (void)(x),0)
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#define CANCELPT_BEGIN CANCELPT(1)
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#define CANCELPT_END CANCELPT(0)
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extern char **__environ;
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#define environ __environ
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#undef weak_alias
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#define weak_alias(old, new) \
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extern __typeof(old) new __attribute__((weak, alias(#old)))
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#undef LFS64_2
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//#define LFS64_2(x, y) weak_alias(x, y)
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#define LFS64_2(x, y) extern __typeof(x) y
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#undef LFS64
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#define LFS64(x) LFS64_2(x, x##64)
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#endif
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