1/*	$NetBSD: netbsd32_sigcode.S,v 1.7 2008/04/28 20:23:12 martin Exp $	*/
2
3/*-
4 * Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum.
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 "assym.h"
33#include <machine/asm.h>
34#include <sys/syscall.h>
35
36/*
37 * Signal trampoline for 1.6 compatibility; copied to top of user stack.
38 */
39
40NENTRY(netbsd32_sigcode)
41
42	.code32
43	/*
44	 * Handler has returned here as if we called it.  The sigcontext
45	 * is on the stack after the 3 args "we" pushed.
46	 */
47	leal	12(%esp),%eax		# get pointer to sigcontext
48	movl	%eax,4(%esp)		# put it in the argument slot
49					# fake return address already there
50	movl	$SYS_compat_16___sigreturn14,%eax
51	int	$0x80	 		# enter kernel with args on stack
52	movl	$SYS_exit,%eax
53	int	$0x80			# exit if sigreturn fails
54	.globl	_C_LABEL(netbsd32_esigcode)
55_C_LABEL(netbsd32_esigcode):
56
57/*
58 * There is no NetBSD-1.6 compatibility for native code.
59 * COMPAT_16 is useful for i386 emulation (COMPAT_NETBSD32) only.
60 */
61	.globl _C_LABEL(sigcode), _C_LABEL(esigcode)
62	.set _C_LABEL(sigcode),0
63	.set _C_LABEL(esigcode),0
64