mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-30 10:45:40 +03:00
71 lines
1.7 KiB
ArmAsm
71 lines
1.7 KiB
ArmAsm
/* 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 <sysdep-cancel.h>
|
|
|
|
.align 4
|
|
.globl __vfork
|
|
.type __vfork, @function
|
|
.usepv __vfork, std
|
|
cfi_startproc
|
|
__vfork:
|
|
ldgp gp, 0(pv)
|
|
PSEUDO_PROF
|
|
|
|
#ifdef SHARED
|
|
ldq t0, __libc_pthread_functions(gp) !gprel
|
|
bne t0, HIDDEN_JUMPTARGET (__fork) !samegp
|
|
#else
|
|
.weak pthread_create
|
|
ldq t0, pthread_create(gp) !literal
|
|
bne t0, $do_fork
|
|
#endif
|
|
|
|
lda v0, SYS_ify(vfork)
|
|
call_pal PAL_callsys
|
|
bne a3, SYSCALL_ERROR_LABEL
|
|
ret
|
|
|
|
#ifndef SHARED
|
|
/* Can't tail-call due to possible mismatch between GP in
|
|
fork and vfork object files. */
|
|
$do_fork:
|
|
subq sp, 16, sp
|
|
cfi_adjust_cfa_offset(16)
|
|
stq ra, 0(sp)
|
|
cfi_offset(ra, -16)
|
|
jsr ra, HIDDEN_JUMPTARGET (__fork)
|
|
ldgp gp, 0(ra)
|
|
ldq ra, 0(sp)
|
|
addq sp, 16, sp
|
|
cfi_restore(ra)
|
|
cfi_adjust_cfa_offset(-16)
|
|
ret
|
|
|
|
$syscall_error:
|
|
SYSCALL_ERROR_HANDLER
|
|
#endif
|
|
|
|
cfi_endproc
|
|
.size __vfork, .-__vfork
|
|
|
|
libc_hidden_def (__vfork)
|
|
|
|
weak_alias (__vfork, vfork)
|