include/libc-internal.h

   1 /* Copyright (C) 1991,92,93,95,96,97,98,99,2000,2001 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #ifndef _LIBC_INTERNAL_H
  19 #define _LIBC_INTERNAL_H 1
  20
  21 #include <features.h>
  22
  23 #ifdef __UCLIBC_BUILD_RELRO__
  24 # define attribute_relro __attribute__ ((section (".data.rel.ro")))
  25 #else
  26 # define attribute_relro
  27 #endif
  28
  29 #ifdef __UCLIBC_HAS_TLS__
  30 # define attribute_tls_model_ie __attribute__ ((tls_model ("initial-exec")))
  31 #else
  32 # define attribute_tls_model_ie
  33 # define __thread
  34 #endif
  35
  36 /* Pull in things like __attribute_used__ */
  37 #include <sys/cdefs.h>
  38
  39 /* --- this is added to integrate linuxthreads */
  40 /*#define __USE_UNIX98            1*/
  41
  42 #ifndef __ASSEMBLER__
  43 # ifdef IS_IN_libc
  44
  45 #  define __need_size_t
  46 #  include <stddef.h>
  47
  48 /* sources are built w/ _GNU_SOURCE, this gets undefined */
  49 #if defined __USE_XOPEN2K && !defined  __USE_GNU
  50 extern char *__glibc_strerror_r (int __errnum, char *__buf, size_t __buflen);
  51 libc_hidden_proto(__glibc_strerror_r)
  52 #else
  53 extern int __xpg_strerror_r (int __errnum, char *__buf, size_t __buflen);
  54 libc_hidden_proto(__xpg_strerror_r)
  55 #endif
  56
  57 /* #include <pthread.h> */
  58 #  ifndef __UCLIBC_HAS_THREADS__
  59 #   define __pthread_mutex_init(mutex, mutexattr)         ((void)0)
  60 #   define __pthread_mutex_lock(mutex)                    ((void)0)
  61 #   define __pthread_mutex_trylock(mutex)                 ((void)0)
  62 #   define __pthread_mutex_unlock(mutex)                  ((void)0)
  63 #   define _pthread_cleanup_push_defer(mutex)             ((void)0)
  64 #   define _pthread_cleanup_pop_restore(mutex)            ((void)0)
  65 #  endif
  66
  67 /* internal access to program name */
  68 extern const char *__uclibc_progname attribute_hidden;
  69
  70 #  ifdef __UCLIBC_HAS_FORTIFY__
  71 extern void __chk_fail(void) attribute_noreturn;
  72 libc_hidden_proto(__chk_fail)
  73 #  endif
  74
  75 #  ifdef __UCLIBC_HAS_SSP__
  76 extern void __stack_chk_fail(void) attribute_noreturn __cold;
  77 #  endif
  78
  79 # endif /* IS_IN_libc */
  80
  81 #endif /* __ASSEMBLER__ */
  82
  83 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
  84
  85 /* Some people like to build up uClibc with *-elf toolchains, so
  86  * a little grease here until we drop '#ifdef __linux__' checks
  87  * from our source code.
  88  */
  89 #ifndef __linux__
  90 # define __linux__ 1
  91 #endif
  92
  93 #endif /* _LIBC_INTERNAL_H */