c_stubs/gconv_stubs.c

   1 /* Provide gconv stub functions for the minimum static binaries.
   2    Copyright (C) 1999, 2001, 2003, 2004 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #include <features.h>
  21 #include <string.h>
  22 #include <wchar.h>
  23 #include <bits/libc-lock.h>
  24 #if __GNUC_PREREQ(3, 3)
  25 # include <gconv_int.h>
  26 #else
  27 # include <gconv.h>
  28 #endif
  29
  30 __libc_lock_define_initialized (, __gconv_lock)
  31
  32 /* hack for self identification */
  33 int __c_stubs_is_compiled_in;
  34
  35 /* Don't drag in the dynamic linker. */
  36 void *__libc_stack_end;
  37
  38 int attribute_hidden
  39 __gconv_OK (void)
  40 {
  41 #if __GLIBC__ > 2 || __GLIBC_MINOR__ > 1
  42   return __GCONV_OK;
  43 #else
  44   return GCONV_OK;
  45 #endif
  46 }
  47
  48 int attribute_hidden
  49 __gconv_NOCONV (void)
  50 {
  51 #if __GLIBC__ > 2 || __GLIBC_MINOR__ > 1
  52   return __GCONV_NOCONV;
  53 #else
  54   return GCONV_NOCONV;
  55 #endif
  56 }
  57
  58 void attribute_hidden
  59 __gconv_NOOP (void)
  60 {
  61 }
  62
  63 int
  64 internal_function
  65 __gconv_compare_alias (const char *name1, const char *name2)
  66 {
  67   return strcmp (name1, name2);
  68 }
  69
  70 wint_t
  71 __gconv_btwoc_ascii (struct __gconv_step *step, unsigned char c)
  72 {
  73   if (c < 0x80)
  74     return c;
  75   else
  76     return WEOF;
  77 }
  78
  79
  80 #if __GNUC_PREREQ(3, 3)
  81 # undef strong_alias
  82 # define strong_alias(impl, name) \
  83   __typeof (name) name __attribute__ ((alias (#impl)))
  84 #endif
  85
  86 strong_alias (__gconv_OK,
  87               __gconv_close_transform);
  88 strong_alias (__gconv_OK,
  89               __gconv_close);
  90
  91 strong_alias (__gconv_NOCONV,
  92               __gconv);
  93 strong_alias (__gconv_NOCONV,
  94               __gconv_find_transform);
  95 strong_alias (__gconv_NOCONV,
  96               __gconv_open);
  97
  98 /* These transformations should not fail in normal conditions */
  99 strong_alias (__gconv_OK,
 100               __gconv_transform_ascii_internal);
 101 strong_alias (__gconv_OK,
 102               __gconv_transform_utf16_internal);
 103 strong_alias (__gconv_OK,
 104               __gconv_transform_utf8_internal);
 105 strong_alias (__gconv_OK,
 106               __gconv_transform_ucs2_internal);
 107
 108 /* We can assume no conversion for these ones */
 109 strong_alias (__gconv_NOCONV,
 110               __gconv_transform_internal_ascii);
 111 strong_alias (__gconv_NOCONV,
 112               __gconv_transform_internal_ucs2);
 113 strong_alias (__gconv_NOCONV,
 114               __gconv_transform_internal_ucs4);
 115 strong_alias (__gconv_NOCONV,
 116               __gconv_transform_internal_utf16);
 117 strong_alias (__gconv_NOCONV,
 118               __gconv_transform_internal_utf8);
 119
 120 strong_alias (__gconv_NOCONV,
 121               __gconv_transliterate);
 122
 123 strong_alias (__gconv_NOOP,
 124               __gconv_release_cache);
 125 strong_alias (__gconv_NOOP,
 126               __gconv_release_step);