diff options
Diffstat (limited to 'linuxthreads/sysdeps/unix/sysv/linux/i386/vfork.S')
| -rw-r--r-- | linuxthreads/sysdeps/unix/sysv/linux/i386/vfork.S | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/i386/vfork.S b/linuxthreads/sysdeps/unix/sysv/linux/i386/vfork.S deleted file mode 100644 index c7a120d239..0000000000 --- a/linuxthreads/sysdeps/unix/sysv/linux/i386/vfork.S +++ /dev/null @@ -1,95 +0,0 @@ -/* Copyright (C) 1999, 2002, 2003 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Andreas Schwab <schwab@gnu.org>. - - 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 <sysdep-cancel.h> -#define _ERRNO_H 1 -#include <bits/errno.h> -#include <kernel-features.h> - -/* 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. */ - -ENTRY (__vfork) - -#ifdef __NR_vfork - -# ifdef SHARED -# if !defined HAVE_HIDDEN || !USE___THREAD - SETUP_PIC_REG (cx) -# else - call __i686.get_pc_thunk.cx -# endif - addl $_GLOBAL_OFFSET_TABLE_, %ecx - cmpl $0, __libc_pthread_functions@GOTOFF(%ecx) -# else - .weak pthread_create - movl $pthread_create, %eax - testl %eax, %eax -# endif - jne HIDDEN_JUMPTARGET (__fork) - - /* Pop the return PC value into ECX. */ - popl %ecx - - /* Stuff the syscall number in EAX and enter into the kernel. */ - movl $SYS_ify (vfork), %eax - int $0x80 - - /* Jump to the return PC. Don't jump directly since this - disturbs the branch target cache. Instead push the return - address back on the stack. */ - pushl %ecx - - cmpl $-4095, %eax - /* Branch forward if it failed. */ -# ifdef __ASSUME_VFORK_SYSCALL - jae SYSCALL_ERROR_LABEL -.Lpseudo_end: -# else - jae .Lerror -# endif - - ret - -# ifndef __ASSUME_VFORK_SYSCALL -.Lerror: - /* Check if vfork syscall is known at all. */ - cmpl $-ENOSYS, %eax - jne SYSCALL_ERROR_LABEL -# endif -#endif - -#ifndef __ASSUME_VFORK_SYSCALL - /* If we don't have vfork, fork is close enough. */ - - movl $SYS_ify (fork), %eax - int $0x80 - cmpl $-4095, %eax - jae SYSCALL_ERROR_LABEL -.Lpseudo_end: - ret -#elif !defined __NR_vfork -# error "__NR_vfork not available and __ASSUME_VFORK_SYSCALL defined" -#endif -PSEUDO_END (__vfork) -libc_hidden_def (__vfork) - -weak_alias (__vfork, vfork) |