1 /* libunwind - a platform-independent unwind library
2 Copyright (C) 2003 Hewlett-Packard Co
3 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
4
5 Modified for x86_64 by Max Asbock <masbock@us.ibm.com>
6 Copyright (C) 2012 Tommi Rantala <tt.rantala@gmail.com>
7
8 This file is part of libunwind.
9
10 Permission is hereby granted, free of charge, to any person obtaining
11 a copy of this software and associated documentation files (the
12 "Software"), to deal in the Software without restriction, including
13 without limitation the rights to use, copy, modify, merge, publish,
14 distribute, sublicense, and/or sell copies of the Software, and to
15 permit persons to whom the Software is furnished to do so, subject to
16 the following conditions:
17
18 The above copyright notice and this permission notice shall be
19 included in all copies or substantial portions of the Software.
20
21 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
28
29 #include <stdlib.h>
30
31 #include "unwind_i.h"
32
33 #if defined(_LITTLE_ENDIAN) && !defined(__LITTLE_ENDIAN)
34 #define __LITTLE_ENDIAN _LITTLE_ENDIAN
35 #endif
36
37 PROTECTED unw_addr_space_t
unw_create_addr_space(unw_accessors_t * a,int byte_order)38 unw_create_addr_space (unw_accessors_t *a, int byte_order)
39 {
40 #ifdef UNW_LOCAL_ONLY
41 return NULL;
42 #else
43 unw_addr_space_t as;
44
45 /*
46 * x86_64 supports only little-endian.
47 */
48 if (byte_order != 0 && byte_order != __LITTLE_ENDIAN)
49 return NULL;
50
51 as = malloc (sizeof (*as));
52 if (!as)
53 return NULL;
54
55 memset (as, 0, sizeof (*as));
56
57 as->acc = *a;
58
59 return as;
60 #endif
61 }
62