1/* libunwind - a platform-independent unwind library
2   Copyright (C) 2006-2007 IBM
3   Contributed by
4     Corey Ashford <cjashfor@us.ibm.com>
5     Jose Flavio Aguilar Paulino <jflavio@br.ibm.com> <joseflavio@gmail.com>
6
7This file is part of libunwind.
8
9Permission is hereby granted, free of charge, to any person obtaining
10a copy of this software and associated documentation files (the
11"Software"), to deal in the Software without restriction, including
12without limitation the rights to use, copy, modify, merge, publish,
13distribute, sublicense, and/or sell copies of the Software, and to
14permit persons to whom the Software is furnished to do so, subject to
15the following conditions:
16
17The above copyright notice and this permission notice shall be
18included in all copies or substantial portions of the Software.
19
20THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
27
28#include <stdlib.h>
29
30#include <libunwind_i.h>
31
32unw_addr_space_t
33unw_create_addr_space (unw_accessors_t *a, int byte_order)
34{
35#ifdef UNW_LOCAL_ONLY
36  return NULL;
37#else
38  unw_addr_space_t as;
39
40  /*
41   * We support both big- and little-endian on Linux ppc64.
42   */
43  if (byte_order != 0 && byte_order_is_valid(byte_order) == 0)
44    return NULL;
45
46  as = malloc (sizeof (*as));
47  if (!as)
48    return NULL;
49
50  memset (as, 0, sizeof (*as));
51
52  as->acc = *a;
53
54  if (byte_order == 0)
55    /* use host default: */
56    as->big_endian = target_is_big_endian();
57  else
58    as->big_endian = byte_order_is_big_endian(byte_order);
59
60/* FreeBSD 13 and up are always ELFv2. */
61#if defined(__FreeBSD__) && __FreeBSD__ >= 13
62  as->abi = UNW_PPC64_ABI_ELFv2;
63#else
64  /* FIXME!  There is no way to specify the ABI.
65     Default to ELFv1 on big-endian and ELFv2 on little-endian.  */
66  if (as->big_endian)
67    as->abi = UNW_PPC64_ABI_ELFv1;
68  else
69    as->abi = UNW_PPC64_ABI_ELFv2;
70#endif
71
72  return as;
73#endif
74}
75