b6cbf7203b
This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
74 lines
2.3 KiB
ArmAsm
74 lines
2.3 KiB
ArmAsm
/* $NetBSD: __clone.S,v 1.4 2011/01/16 02:43:10 matt 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"
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
__RCSID("$NetBSD: __clone.S,v 1.4 2011/01/16 02:43:10 matt Exp $")
|
|
#endif /* LIBC_SCCS && !lint */
|
|
|
|
#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.
|
|
*/
|
|
cmpwi %r3,0
|
|
beq 1f
|
|
cmpwi %r4,0
|
|
beq 1f
|
|
|
|
mr %r7,%r3 /* Save fn in r7. */
|
|
mr %r3,%r5
|
|
_DOSYSCALL(__clone) /* (flags, stack) */
|
|
bso 2f /* error... */
|
|
|
|
cmpwi %r3,0
|
|
bnelr /* We're the parent, just return. */
|
|
|
|
mtlr %r7 /* fn */
|
|
mr %r3,%r6 /* arg */
|
|
blrl /* Call the clone's entry point. */
|
|
|
|
#ifdef PIC
|
|
PIC_TOCSETUP(__clone, %r30) /* exit won't return so blow away r30 */
|
|
#endif
|
|
bl PIC_PLT(_C_LABEL(_exit))
|
|
|
|
1:
|
|
li %r3,EINVAL
|
|
2:
|
|
b _C_LABEL(__cerror)
|
|
END(__clone)
|