1 /* $FreeBSD: releng/9.1/sys/powerpc/powerpc/sigcode64.S 209975 2010-07-13 05:32:19Z nwhitehorn $ */
2 /* $NetBSD: sigcode.S,v 1.1 1999/11/17 14:56:11 kleink Exp $ */
3
4 /*-
5 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
6 * Copyright (C) 1995, 1996 TooLs GmbH.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by TooLs GmbH.
20 * 4. The name of TooLs GmbH may not be used to endorse or promote products
21 * derived from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
29 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
31 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
32 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 #include <machine/asm.h>
36 #include <sys/syscall.h>
37 #include "assym.s"
38
39 /*
40 * The following code gets copied to the top of the user stack on process
41 * execution. It does signal trampolining on signal delivery.
42 *
43 * On entry r1 points to a struct sigframe at bottom of current stack.
44 * All other registers are unchanged.
45 */
46 .globl CNAME(sigcode64),CNAME(szsigcode64)
47 CNAME(sigcode64):
48 addi 1,1,-48 /* reserved space for callee */
49 mflr 2 /* resolve function descriptor */
50 ld 0,0(2)
51 ld 2,8(2)
52 mtlr 0
53
54 blrl
55
56 addi 3,1,48+SF_UC /* restore sp, and get &frame->sf_uc */
57 li 0,SYS_sigreturn
58 sc /* sigreturn(scp) */
59 li 0,SYS_exit
60 sc /* exit(errno) */
61 nop /* align to doubleword */
62 endsigcode64:
63
64 .data
65 CNAME(szsigcode64):
66 .long endsigcode64 - CNAME(sigcode64)
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