sysdeps/unix/sysv/linux/ia64/pt-vfork.S

   1 /* vfork ABI-compatibility entry points for libpthread.  IA64 version.
   2    Copyright (C) 2014-2019 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 <sysdep.h>
  20 #include <shlib-compat.h>
  21
  22 /* libpthread used to have its own vfork implementation that differed
  23    from libc's only in having a pointless micro-optimization.  There
  24    is no longer any use to having a separate copy in libpthread, but
  25    the historical ABI requires it.  For static linking, there is no
  26    need to provide anything here--the libc version will be linked in.
  27    For shared library ABI compatibility, there must be __vfork and
  28    vfork symbols in libpthread.so.  */
  29
  30 #if (SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_20) \
  31      || SHLIB_COMPAT (libpthread, GLIBC_2_1_2, GLIBC_2_20))
  32
  33 LOCAL_LEAF (vfork_compat)
  34         br __libc_vfork
  35         ;;
  36 END (vfork_compat)
  37
  38 #endif
  39
  40 #if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_20)
  41 weak_alias (vfork_compat, vfork)
  42 compat_symbol (libpthread, vfork_compat, vfork, GLIBC_2_0);
  43 #endif
  44
  45 #if SHLIB_COMPAT (libpthread, GLIBC_2_1_2, GLIBC_2_20)
  46 strong_alias (vfork_compat, __vfork_compat)
  47 compat_symbol (libpthread, __vfork_compat, __vfork, GLIBC_2_1_2);
  48 #endif