0a6a1f1d05
This brings our tree to NetBSD 7.0, as found on -current on the 10-10-2015. This updates: - LLVM to 3.6.1 - GCC to GCC 5.1 - Replace minix/commands/zdump with usr.bin/zdump - external/bsd/libelf has moved to /external/bsd/elftoolchain/ - Import ctwm - Drop sprintf from libminc Change-Id: I149836ac18e9326be9353958bab9b266efb056f0
80 lines
2.4 KiB
ArmAsm
80 lines
2.4 KiB
ArmAsm
/* $NetBSD: __clone.S,v 1.1 2014/09/03 19:34:26 matt 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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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: __clone.S,v 1.1 2014/09/03 19:34:26 matt Exp $")
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#endif /* LIBC_SCCS && !lint */
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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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l.sfeqi r3,0
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l.bf 2f
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l.sfeqi r4,0
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l.bf 2f
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l.or r7,r3,r0 /* Save fn in r7. */
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l.or r3,r5,r0
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_DOSYSCALL(__clone) /* (flags, stack) */
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l.bf _C_LABEL(__cerror) /* error... */
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l.nop
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l.sfeqi r11,0
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l.bf 1f /* We're the parent, just return. */
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l.nop
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l.jr lr
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l.nop
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1: l.or r3,r6,r0 /* arg */
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l.jalr r7 /* Call the clone's entry point. */
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l.nop
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#ifdef __PIC__
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// We don't need to save r9 or r16 since we aren't ever coming back
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PIC_GOTSETUP(r16)
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#endif
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l.jal plt(_C_LABEL(_exit))
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l.nop
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2:
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l.addi r11,r0,EINVAL
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l.j _C_LABEL(__cerror)
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l.nop
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END(__clone)
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