sysdeps/unix/sysv/linux/alpha/pt-vfork.S

   1 /* vfork ABI-compatibility entry points for libpthread.
   2    Copyright (C) 2014 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 Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the 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    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <shlib-compat.h>
  20
  21 /* libpthread used to have its own vfork implementation that differed
  22    from libc's only in having a pointless micro-optimization.  There
  23    is no longer any use to having a separate copy in libpthread, but
  24    the historical ABI requires it.  For static linking, there is no
  25    need to provide anything here--the libc version will be linked in.
  26    For shared library ABI compatibility, there must be __vfork and
  27    vfork symbols in libpthread.so.  */
  28
  29 #if (SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_20) \
  30      || SHLIB_COMPAT (libpthread, GLIBC_2_1_2, GLIBC_2_20))
  31
  32 #include <vfork.S>
  33
  34 #endif
  35
  36 #if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_20)
  37 compat_symbol (libpthread, __libc_vfork, vfork, GLIBC_2_0);
  38 #endif
  39
  40 #if SHLIB_COMPAT (libpthread, GLIBC_2_1_2, GLIBC_2_20)
  41 strong_alias (__libc_vfork, __vfork_compat)
  42 compat_symbol (libpthread, __vfork_compat, __vfork, GLIBC_2_1_2);
  43 #endif