2 /* $NetBSD: sigcode.S,v 1.1 1999/11/17 14:56:11 kleink Exp $ */
5 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
6 * Copyright (C) 1995, 1996 TooLs GmbH.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
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.
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.
35 #include <machine/asm.h>
36 #include <sys/syscall.h>
40 * The following code gets copied to the top of the user stack on process
41 * execution. It does signal trampolining on signal delivery.
43 * On entry r1 points to a struct sigframe at bottom of current stack.
44 * All other registers are unchanged.
46 * Entered midway through for v2 ELF binaries that don't need to deal with
47 * function descriptors.
50 .globl CNAME(sigcode64),CNAME(szsigcode64)
51 .globl CNAME(sigcode64_elfv2),CNAME(szsigcode64_elfv2)
53 mflr 2 /* resolve function descriptor */
58 CNAME(sigcode64_elfv2):
59 addi 1,1,-112 /* reserved space for callee */
60 mflr 12 /* ELFv2 wants the address in r12 */
63 addi 3,1,112+SF_UC /* restore sp, and get &frame->sf_uc */
65 sc /* sigreturn(scp) */
68 nop /* align to doubleword */
73 .long endsigcode64 - CNAME(sigcode64)
74 CNAME(szsigcode64_elfv2):
75 .long endsigcode64 - CNAME(sigcode64_elfv2)