From cccc549ced940c85039c8ce263c8bb571f244afd Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Tue, 31 Jan 2006 05:05:15 +0000 Subject: initial import of latest linuxthreads --- .../unix/sysv/linux/powerpc/powerpc64/vfork.S | 91 ++++++++++++++++++++++ 1 file changed, 91 insertions(+) create mode 100644 libpthread/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S (limited to 'libpthread/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S') diff --git a/libpthread/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S b/libpthread/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S new file mode 100644 index 000000000..b408e31b7 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S @@ -0,0 +1,91 @@ +/* Copyright (C) 2003 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#define _ERRNO_H 1 +#include +#include + +/* Clone the calling process, but without copying the whole address space. + The calling process is suspended until the new process exits or is + replaced by a call to `execve'. Return -1 for errors, 0 to the new process, + and the process ID of the new process to the old process. */ + +#ifdef SHARED + .section ".toc","aw" +.LC0: + .tc __libc_pthread_functions[TC],__libc_pthread_functions + .section ".text" + .align 2 +#endif + +ENTRY (__vfork) + +#ifdef __NR_vfork + +# ifdef SHARED + ld 10,.LC0@toc(2) + ld 10,0(10) + cmpwi 10,0 + bne- HIDDEN_JUMPTARGET(__fork) +# else + .weak pthread_create + lis 10,pthread_create@highest + ori 10,10,pthread_create@higher + sldi 10,10,32 + oris 10,10,pthread_create@h + ori 10,10,pthread_create@l + cmpwi 10,0 + bne- .Lhidden_fork +# endif + + DO_CALL (SYS_ify (vfork)); + +# ifdef __ASSUME_VFORK_SYSCALL + PSEUDO_RET +# else + bnslr+ + /* Check if vfork syscall is known at all. */ + cmpdi r3,ENOSYS +# ifdef SHARED + bne JUMPTARGET(__syscall_error) +# else + bne- .Lsyscall_error +# endif + +# endif +#endif + +#ifndef __ASSUME_VFORK_SYSCALL + /* If we don't have vfork, fork is close enough. */ + + DO_CALL (SYS_ify (fork)); + PSEUDO_RET +#endif + +# ifndef SHARED +.Lhidden_fork: + b HIDDEN_JUMPTARGET(__fork) +.Lsyscall_error: + b JUMPTARGET(__syscall_error) +# endif + +PSEUDO_END (__vfork) +libc_hidden_def (__vfork) + +weak_alias (__vfork, vfork) -- cgit v1.2.3