1/*-
2 * Copyright (c) 2002 Peter Grehan.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26/*      $NetBSD: ptrace.S,v 1.3 2000/02/23 20:16:57 kleink Exp $        */
27
28#include <machine/asm.h>
29__FBSDID("$FreeBSD$");
30
31#include "SYS.h"
32
33ENTRY(ptrace)
34	mflr	%r0
35	stwu	%r1,-32(%r1)
36	stw	%r0,36(%r1)
37	stw	%r3,8(%r1)
38	stw	%r4,12(%r1)
39	stw	%r5,16(%r1)
40	stw	%r6,20(%r1)
41
42	bl	PIC_PLT(CNAME(__error))
43	li	%r7,0
44	stw	%r7,0(%r3)
45
46	lwz	%r3,8(%r1)
47	lwz	%r4,12(%r1)
48	lwz	%r5,16(%r1)
49	lwz	%r0,36(%r1)
50	lwz	%r6,20(%r1)
51	mtlr	%r0
52	la	%r1,32(%r1)
53	li	%r0,SYS_ptrace
54	sc
55	bso	1f
56	blr
571:
58	b	PIC_PLT(HIDENAME(cerror))
59
60	.section .note.GNU-stack,"",%progbits
61