1 /*-
2 * Copyright (c) 2013 The NetBSD Foundation, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
15 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
16 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
24 * POSSIBILITY OF SUCH DAMAGE.
25 */
26 #include <sys/cdefs.h>
27 #include <sys/types.h>
28 #include "unwind.h"
29
30 void _Unwind_VRS_Get(struct _Unwind_Context *, int, _Unwind_Word, int, void *);
31 void _Unwind_VRS_Set(struct _Unwind_Context *, int, _Unwind_Word, int, void *);
32
33 _Unwind_Word
_Unwind_GetGR(struct _Unwind_Context * context,int regno)34 _Unwind_GetGR(struct _Unwind_Context *context, int regno)
35 {
36 _Unwind_Word val;
37 _Unwind_VRS_Get(context, 0 /*_UVRSC_CORE*/, regno, 0 /*_UVRSD_UINT32*/,
38 &val);
39
40 return val;
41 }
42
43 _Unwind_Ptr
_Unwind_GetIP(struct _Unwind_Context * context)44 _Unwind_GetIP(struct _Unwind_Context *context)
45 {
46 return (_Unwind_Ptr)(_Unwind_GetGR (context, 15) & ~(_Unwind_Word)1);
47 }
48
49 _Unwind_Ptr
_Unwind_GetIPInfo(struct _Unwind_Context * context,int * p)50 _Unwind_GetIPInfo(struct _Unwind_Context *context, int *p)
51 {
52 *p = 0;
53 return _Unwind_GetIP(context);
54 }
55
56 void
_Unwind_SetGR(struct _Unwind_Context * context,int reg,_Unwind_Ptr val)57 _Unwind_SetGR(struct _Unwind_Context *context, int reg, _Unwind_Ptr val)
58 {
59 _Unwind_VRS_Set(context, 0 /*_UVRSC_CORE*/, reg, 0 /*_UVRSD_UINT32*/,
60 &val);
61 }
62