1 /* $NetBSD: __sigtramp2.S,v 1.3 2011/01/15 07:31:12 matt Exp $ */
4 * Copyright (c) 2002 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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.
34 #if defined(LIBC_SCCS) && !defined(lint)
35 __RCSID("$NetBSD: __sigtramp2.S,v 1.3 2011/01/15 07:31:12 matt Exp $")
36 #endif /* LIBC_SCCS && !lint */
39 * On entry to user space, stack and registers look like:
42 * r4 pointer to siginfo structure
43 * r5 pointer to ucontext structure
44 * r30 pointer to ucontext structure
45 * srr0 address of handler
46 * lr address of this trampoline
49 ENTRY_NOPROFILE(__sigtramp_siginfo_2)
50 mr %r3,%r30 /* restore ucontext pointer */
51 _DOSYSCALL(setcontext) /* restore machine state */
52 _DOSYSCALL(exit) /* or exit with errno if failed */
53 END(__sigtramp_siginfo_2)