ptrace.S revision 209878 
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: head/lib/libc/powerpc64/sys/ptrace.S 209878 2010-07-10 14:45:03Z nwhitehorn $");
30
31#include "SYS.h"
32
33ENTRY(ptrace)
34	mflr	%r0
35	stdu	%r1,-68(%r1)
36	std	%r0,84(%r1)
37	stw	%r3,48(%r1)
38	stw	%r4,52(%r1)
39	std	%r5,56(%r1)
40	stw	%r6,64(%r1)
41
42	bl	PIC_PLT(CNAME(__error))
43	nop
44	li	%r7,0
45	stw	%r7,0(%r3)
46
47	lwz	%r3,48(%r1)
48	lwz	%r4,52(%r1)
49	ld	%r5,56(%r1)
50	ld	%r0,84(%r1)
51	lwz	%r6,64(%r1)
52	mtlr	%r0
53	ld	%r1,0(%r1)
54	li	%r0,SYS_ptrace
55	sc
56	bso	1f
57	blr
581:
59	stdu	%r1,-48(%r1)		/* lr already saved */
60	bl	PIC_PLT(HIDENAME(cerror))
61	nop
62	ld	%r1,0(%r1)
63	ld	%r0,16(%r1)
64	mtlr	%r0
65	blr
66