diff options
| author | Waldemar Brodkorb <wbx@openadk.org> | 2017-01-22 10:24:51 +0100 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2017-01-28 10:31:19 +0100 |
| commit | bddde5860ffb8a78587854cc8e3e914bd69269ca (patch) | |
| tree | d37c90a9ca983fb8be614844343ba2941927f88a /libpthread/nptl/sysdeps/unix/sysv/linux/sh/vfork.S | |
| parent | 30adfbeb8843c28869cc6ee33d7c556721cb241a (diff) | |
remove PID caching
Follow GNU C Library from c579f48edba88380635ab98cb612030e3ed8691e
and remove the PID caching. These simplifies the architecture specific
assembly code.
The run of the test suite found no regressions, it even solves
some of the test failures for x86/x86_64/sparc.
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Acked-by: Matthew Fortune <Matthew.Fortune@imgtec.com>
Acked-by: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
Diffstat (limited to 'libpthread/nptl/sysdeps/unix/sysv/linux/sh/vfork.S')
| -rw-r--r-- | libpthread/nptl/sysdeps/unix/sysv/linux/sh/vfork.S | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/sh/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/sh/vfork.S deleted file mode 100644 index 5ea1bc120..000000000 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/sh/vfork.S +++ /dev/null @@ -1,70 +0,0 @@ -/* Copyright (C) 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 - <http://www.gnu.org/licenses/>. */ - -#include <sysdep.h> -#define _ERRNO_H 1 -#include <bits/errno.h> -#include <tcb-offsets.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) - /* Save the PID value. */ - stc gbr, r2 - mov.w .L2, r0 - mov.l @(r0,r2), r4 - neg r4, r1 - tst r1, r1 - bf 1f - mov #1, r1 - rotr r1 -1: - mov.l r1, @(r0,r2) - - mov.w .L1, r3 - trapa #0x10 - mov r0, r1 - - /* Restore the old PID value in the parent. */ - tst r0, r0 - bt.s 2f - stc gbr, r2 - mov.w .L2, r0 - mov.l r4, @(r0,r2) - mov r1, r0 -2: - 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 -.L2: - .word PID - TLS_PRE_TCB_SIZE - .align 2 -PSEUDO_END (__vfork) -hidden_def (vfork) - -weak_alias (__vfork, vfork) |