From e1e46622ac0fce73d802fa4a8a2e83cc25cd9e7a Mon Sep 17 00:00:00 2001 From: Waldemar Brodkorb Date: Sat, 14 Feb 2015 23:04:02 -0600 Subject: Revert "resolve merge" This reverts commit 6b6ede3d15f04fe825cfa9f697507457e3640344. --- .../sysdeps/unix/sysv/linux/sh/vfork.S | 77 ++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 libpthread/linuxthreads/sysdeps/unix/sysv/linux/sh/vfork.S (limited to 'libpthread/linuxthreads/sysdeps/unix/sysv/linux/sh/vfork.S') diff --git a/libpthread/linuxthreads/sysdeps/unix/sysv/linux/sh/vfork.S b/libpthread/linuxthreads/sysdeps/unix/sysv/linux/sh/vfork.S new file mode 100644 index 000000000..90733119e --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/unix/sysv/linux/sh/vfork.S @@ -0,0 +1,77 @@ +/* Copyright (C) 2003, 2004 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 + . */ + +#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. */ + +ENTRY (__vfork) +#ifdef SHARED + mov.l .Lgot, r1 + mova .Lgot, r0 + add r0, r1 + mov.l .Lpthread_func, r0 + mov.l @(r0,r1), r0 +#else + mov.l .Lpthread_create, r0 +#endif + tst r0, r0 + bf .Lhidden_fork + + mov.w .L1, r3 + trapa #__SH_SYSCALL_TRAP_BASE + mov r0, r1 + mov #-12, r2 + shad r2, r1 + not r1, r1 /* r1=0 means r0 = -1 to -4095 */ + tst r1, r1 /* i.e. error in linux */ + bf .Lpseudo_end + SYSCALL_ERROR_HANDLER +.Lpseudo_end: + rts + nop +.L1: .word __NR_vfork + .align 2 +#ifdef SHARED +.Lgot: + .long _GLOBAL_OFFSET_TABLE_ +.Lpthread_func: + .long __libc_pthread_functions@GOTOFF +#else +.Lpthread_create: + .weak pthread_create + .long pthread_create +#endif + +.Lhidden_fork: + mov.l .L2, r1 + braf r1 + nop +1: + .align 2 +.L2: .long HIDDEN_JUMPTARGET(fork)-1b + +PSEUDO_END (__vfork) +libc_hidden_def (__vfork) + +weak_alias (__vfork, vfork) -- cgit v1.2.3