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/* $NetBSD: __clone.S,v 1.3 2003/10/24 04:41:28 uwe Exp $ */
/*-
* Copyright (c) 2001 Tsubai Masanari. 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 <sys/errno.h>
#include "SYS.h"
#ifdef WEAK_ALIAS
WEAK_ALIAS(clone,__clone)
#endif
/*
* int __clone(int (*fn)(void *), void *stack, int flags, void *arg);
*/
ENTRY(__clone)
/*
* Sanity checks: func and stack may not be NULL.
*/
tst r4, r4
bt inval
tst r5, r5
bt inval
mov r4, r2
mov r6, r4
mov.l LSYS___clone, r0
trapa #0x80
bf err
tst r0, r0
bf 1f /* We're the parent, just return. */
jsr @r2 /* Call the clone's entry point. */
mov r7, r4 /* arg */
mov.l L__exit, r1
#ifdef PIC
braf r1
#else
jsr @r1
#endif
mov r0, r4
2:
inval:
mov #EINVAL, r0
err:
mov.l Lcerror, r1
#ifdef PIC
braf r1
#else
jmp @r1
#endif
nop
1:
rts
nop
.align 2
LSYS___clone:
.long SYS___clone
#ifdef PIC
L__exit:
.long _C_LABEL(_exit)-2b
Lcerror:
.long cerror-1b
#else
L__exit:
.long _C_LABEL(_exit)
Lcerror:
.long cerror
#endif
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