mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-25 20:21:07 +00:00
89b4bd6b60
At the same time, incorporate the 0 -> 0x80000000 mapping of the pid expected by raise.c.
55 lines
1.9 KiB
C
55 lines
1.9 KiB
C
/* vfork ABI-compatibility entry points for libpthread.
|
|
Copyright (C) 2014 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <shlib-compat.h>
|
|
|
|
/* libpthread used to have its own vfork implementation that differed
|
|
from libc's only in having a pointless micro-optimization. There
|
|
is no longer any use to having a separate copy in libpthread, but
|
|
the historical ABI requires it. For static linking, there is no
|
|
need to provide anything here--the libc version will be linked in.
|
|
For shared library ABI compatibility, there must be __vfork and
|
|
vfork symbols in libpthread.so. */
|
|
|
|
#if HAVE_IFUNC
|
|
# include <nptl/pt-vfork.c>
|
|
#elif (SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_20) \
|
|
|| SHLIB_COMPAT (libpthread, GLIBC_2_1_2, GLIBC_2_20))
|
|
|
|
/* Thankfully, on AArch64 we can rely on the compiler generating
|
|
a tail call here. */
|
|
|
|
extern void __libc_vfork (void);
|
|
|
|
void
|
|
vfork_compat (void)
|
|
{
|
|
__libc_vfork ();
|
|
}
|
|
|
|
# if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_20)
|
|
compat_symbol (libpthread, vfork_compat, vfork, GLIBC_2_0);
|
|
# endif
|
|
|
|
# if SHLIB_COMPAT (libpthread, GLIBC_2_1_2, GLIBC_2_20)
|
|
strong_alias (vfork_compat, vfork_compat2)
|
|
compat_symbol (libpthread, vfork_compat2, __vfork, GLIBC_2_1_2);
|
|
# endif
|
|
|
|
#endif
|