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/*-
* 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.
*/
#include <machine/asm.h>
__FBSDID("$FreeBSD$");
#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)
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