1 /* $NetBSD: getcontext.S,v 1.2 2008/04/28 20:22:57 martin Exp $ */
4 * Copyright (c) 2001 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(SYSLIBC_SCCS) && !defined(lint)
35 RCSID("$NetBSD: getcontext.S,v 1.2 2008/04/28 20:22:57 martin Exp $")
36 #endif /* SYSLIBC_SCCS && !lint */
39 WEAK_ALIAS(getcontext, _getcontext)
43 mov %o0, %o2 ! must save pointer
44 mov SYS_getcontext, %g1
47 clr [%o2 + 40 + 11 * 4] ! gr[_REG_O0] = 0
51 st %o1, [%o2 + 40 + 1 * 4] ! gr[_REG_PC] = retaddr
54 st %o1, [%o2 + 40 + 2 * 4] ! gr[_REG_nPC] = retaddr + 4