67 lines
2.1 KiB
ArmAsm
67 lines
2.1 KiB
ArmAsm
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/* $NetBSD: __clone.S,v 1.1 2006/07/01 16:37:20 ross Exp $ */
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/*-
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* Copyright (c) 2001 Tsubai Masanari. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/errno.h>
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#include "SYS.h"
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#ifdef WEAK_ALIAS
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WEAK_ALIAS(clone, __clone)
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#endif
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/*
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* int __clone(int (*fn)(void *), void *stack, int flags, void *arg);
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*/
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ENTRY(__clone)
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/*
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* Sanity checks: func and stack may not be NULL.
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*/
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cmpdi %r3,0
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beq 1f
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cmpdi %r4,0
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beq 1f
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mr %r7,%r3 /* Save fn in r7. */
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mr %r3,%r5
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li %r0,SYS___clone /* (flags, stack) */
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sc
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bso 2f /* error... */
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cmpdi %r3,0
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bnelr /* We're the parent, just return. */
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mtlr %r7 /* fn */
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mr %r3,%r6 /* arg */
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blrl /* Call the clone's entry point. */
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bl PIC_PLT(_C_LABEL(_exit))
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1:
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li %r3,EINVAL
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2:
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b PIC_PLT(_C_LABEL(__cerror))
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