66 lines
2.0 KiB
ArmAsm
66 lines
2.0 KiB
ArmAsm
|
/*-
|
||
|
|
* Copyright (c) 2000 Peter Wemm <peter@FreeBSD.org>
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
|
|
* SUCH DAMAGE.
|
||
|
|
*
|
||
|
|
* $FreeBSD$
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "SYS.h"
|
||
|
|
#include <sys/syscall.h>
|
||
|
|
/* #include <machine/pal.h> */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This is pretty evil and based mostly on examples from other syscall
|
||
|
|
* stubs and code that gcc generated. Correctness is uncertain, but it
|
||
|
|
* seems to work quite happily.
|
||
|
|
*/
|
||
|
|
LEAF(rfork_thread, 1)
|
||
|
|
br gp,L1 /* XXX profiling */
|
||
|
|
L1:
|
||
|
|
LDGP(pv)
|
||
|
|
lda sp,-16(sp)
|
||
|
|
stq ra,0(sp)
|
||
|
|
mov a3,a5
|
||
|
|
CALLSYS_ERROR(rfork)
|
||
|
|
beq v0,$child
|
||
|
|
addl v0,zero,v0
|
||
|
|
ldq ra,0(sp)
|
||
|
|
lda sp,16(sp)
|
||
|
|
RET
|
||
|
|
$child:
|
||
|
|
mov a1,sp
|
||
|
|
lda sp,-16(sp)
|
||
|
|
stq zero,0(sp)
|
||
|
|
mov a5,a0
|
||
|
|
mov a2,t12
|
||
|
|
jsr ra,(t12),0
|
||
|
|
ldgp gp,0(ra)
|
||
|
|
mov v0,a0
|
||
|
|
#ifdef SYS_exit
|
||
|
|
CALLSYS_NOERROR(exit)
|
||
|
|
#else
|
||
|
|
CALLSYS_NOERROR(sys_exit)
|
||
|
|
#endif
|
||
|
|
END(rfork_thread)
|