xref: /netbsd-src/lib/libc/compat/arch/powerpc/sys/compat___sigtramp1.S (revision cf88c3890b9a2e310adacd2c695f42a55ca4e79a)
1/*	$NetBSD: compat___sigtramp1.S,v 1.3 2011/01/15 07:31:13 matt Exp $	*/
2
3/*-
4 * Copyright (c) 2002 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include "SYS.h"
33#include "assym.h"
34
35#if defined(LIBC_SCCS)
36__RCSID("$NetBSD: compat___sigtramp1.S,v 1.3 2011/01/15 07:31:13 matt Exp $")
37#endif
38
39/*
40 * On entry, stack and registers look like:
41 *
42 *	r3	signal number
43 *	r4	signal specific code
44 *	r5	pointer to sigcontext structure
45 *	lr	address of handler
46 *
47 *	sp->	sigcontext structure
48 */
49ENTRY_NOPROFILE(__sigtramp_sigcontext_1)
50	addi	%r1,%r1,-CALLFRAMELEN	/* space for callee */
51	blrl				/* call handler */
52	addi	%r3,%r1,CALLFRAMELEN	/* compute address of sigcontext */
53	_DOSYSCALL(compat_16___sigreturn14)	/* and call sigreturn */
54	_DOSYSCALL(exit)		/* or exit with errno if failed */
55END(__sigtramp_sigcontext_1)
56