mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-04 10:50:07 +00:00
41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
74 lines
2.5 KiB
ArmAsm
74 lines
2.5 KiB
ArmAsm
/* Copyright (C) 2000, 2001 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.h>
|
|
#include <asm/errno.h>
|
|
|
|
|
|
/* int __clone2(int (*fn) (void *arg), void *child_stack_base, */
|
|
/* size_t child_stack_size, int flags, void *arg) */
|
|
|
|
ENTRY(__clone2)
|
|
alloc r2=ar.pfs,5,2,3,0
|
|
cmp.eq p6,p0=0,in0
|
|
mov r8=EINVAL
|
|
(p6) br.cond.spnt.few __syscall_error
|
|
;;
|
|
flushrs /* This is necessary, since the child */
|
|
/* will be running with the same */
|
|
/* register backing store for a few */
|
|
/* instructions. We need to ensure */
|
|
/* that it will not read or write the */
|
|
/* backing store. */
|
|
mov loc0=in0 /* save fn */
|
|
mov loc1=in4 /* save arg */
|
|
mov out0=in3 /* Flags are first syscall argument. */
|
|
mov out1=in1 /* Stack address. */
|
|
mov out2=in2 /* Stack size. */
|
|
DO_CALL (SYS_ify (clone2))
|
|
cmp.eq p6,p0=-1,r10
|
|
;;
|
|
(p6) br.cond.spnt.few __syscall_error
|
|
|
|
# define CHILD p6
|
|
# define PARENT p7
|
|
cmp.eq CHILD,PARENT=0,r8 /* Are we the child? */
|
|
;;
|
|
(CHILD) ld8 out1=[loc0],8 /* Retrieve code pointer. */
|
|
(CHILD) mov out0=loc1 /* Pass proper argument to fn */
|
|
(PARENT) ret
|
|
;;
|
|
ld8 gp=[loc0] /* Load function gp. */
|
|
mov b6=out1
|
|
;;
|
|
br.call.dptk.few rp=b6 /* Call fn(arg) in the child */
|
|
;;
|
|
mov out0=r8 /* Argument to _exit */
|
|
.globl _exit
|
|
br.call.dpnt.few rp=_exit /* call _exit with result from fn. */
|
|
ret /* Not reached. */
|
|
|
|
PSEUDO_END(__clone2)
|
|
|
|
/* For now we leave __clone undefined. This is unlikely to be a */
|
|
/* problem, since at least the i386 __clone in glibc always failed */
|
|
/* with a 0 sp (eventhough the kernel explicitly handled it). */
|
|
/* Thus all such calls needed to pass an explicit sp, and as a result, */
|
|
/* would be unlikely to work on ia64. */
|