1 /* $NetBSD: __sigtramp2.S,v 1.3 2011/01/17 08:23:54 matt Exp $ */
4 * Copyright (c) 2002 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
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11 * modification, are permitted provided that the following conditions
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14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
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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
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26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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29 * POSSIBILITY OF SUCH DAMAGE.
35 * On entry to user space, stack and registers look like:
38 * r4 pointer to siginfo structure
39 * r5 pointer to ucontext structure
40 * r30 pointer to ucontext structure
41 * srr0 address of handler
42 * lr address of this trampoline
45 ENTRY_NOPROFILE(__sigtramp_siginfo_2)
46 mr %r3,%r30 /* restore ucontext pointer */
47 _DOSYSCALL(setcontext) /* restore machine state */
48 _DOSYSCALL(exit) /* or exit with errno if failed */