1/* libunwind - a platform-independent unwind library
2   Copyright (C) 2004 Hewlett-Packard Co
3	Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
4
5This file is part of libunwind.
6
7Permission is hereby granted, free of charge, to any person obtaining
8a copy of this software and associated documentation files (the
9"Software"), to deal in the Software without restriction, including
10without limitation the rights to use, copy, modify, merge, publish,
11distribute, sublicense, and/or sell copies of the Software, and to
12permit persons to whom the Software is furnished to do so, subject to
13the following conditions:
14
15The above copyright notice and this permission notice shall be
16included in all copies or substantial portions of the Software.
17
18THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
22LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
25
26/* The setcontext() in glibc is a no-op (as of 4 Dec 2004), so we have
27   to implement something useful on our own here.  */
28
29#define FILL(n) ldw (LINUX_UC_MCONTEXT_OFF+LINUX_SC_GR_OFF+4*(n))(%r26),%r##n
30
31#include "offsets.h"
32
33	.align 4
34	.global _Uhppa_setcontext
35	.protected _Uhppa_setcontext
36	.proc
37	.callinfo
38_Uhppa_setcontext:
39	FILL (2)		/* return-pointer */
40	FILL (3)		/* frame pointer */
41	FILL (4)		/* 2nd-ary frame pointer */
42	FILL (5)		/* preserved register */
43	FILL (6)		/* preserved register */
44	FILL (7)		/* preserved register */
45	FILL (8)		/* preserved register */
46	FILL (9)		/* preserved register */
47	FILL (10)		/* preserved register */
48	FILL (11)		/* preserved register */
49	FILL (12)		/* preserved register */
50	FILL (13)		/* preserved register */
51	FILL (14)		/* preserved register */
52	FILL (15)		/* preserved register */
53	FILL (16)		/* preserved register */
54	FILL (17)		/* preserved register */
55	FILL (18)		/* preserved register */
56	FILL (19)		/* linkage-table register */
57	FILL (27)		/* global-data pointer */
58	FILL (30)		/* stack pointer */
59
60	ldo (LINUX_UC_MCONTEXT_OFF+LINUX_SC_FR_OFF)(%r26), %r29
61	fldds,ma 8(%r29), %fr12
62	fldds,ma 8(%r29), %fr13
63	fldds,ma 8(%r29), %fr14
64	fldds,ma 8(%r29), %fr15
65	fldds,ma 8(%r29), %fr16
66	fldds,ma 8(%r29), %fr17
67	fldds,ma 8(%r29), %fr18
68	fldds,ma 8(%r29), %fr19
69	fldds,ma 8(%r29), %fr20
70	fldds    8(%r29), %fr21
71
72	bv,n	%r0(%rp)
73	.procend
74#ifdef __linux__
75	/* We do not need executable stack.  */
76	.section	.note.GNU-stack,"",@progbits
77#endif
78