1/* BFD support for the Axis CRIS architecture.
2   Copyright 2000, 2002, 2004, 2005 Free Software Foundation, Inc.
3   Contributed by Axis Communications AB.
4   Written by Hans-Peter Nilsson.
5
6This file is part of BFD, the Binary File Descriptor library.
7
8This program is free software; you can redistribute it and/or modify
9it under the terms of the GNU General Public License as published by
10the Free Software Foundation; either version 2 of the License, or
11(at your option) any later version.
12
13This program is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License
19along with this program; if not, write to the Free Software
20Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
21
22#include "bfd.h"
23#include "sysdep.h"
24#include "libbfd.h"
25
26/* This routine is provided two arch_infos and returns the lowest common
27   denominator.  CRIS v0..v10 vs. v32 are not compatible in general, but
28   there's a compatible subset for which we provide an arch_info.  */
29
30static const bfd_arch_info_type * get_compatible
31  PARAMS ((const bfd_arch_info_type *, const bfd_arch_info_type *));
32
33static const bfd_arch_info_type *
34get_compatible (a,b)
35     const bfd_arch_info_type *a;
36     const bfd_arch_info_type *b;
37{
38  /* Arches must match.  */
39  if (a->arch != b->arch)
40   return NULL;
41
42  /* If either is the compatible mach, return the other.  */
43  if (a->mach == bfd_mach_cris_v10_v32)
44    return b;
45  if (b->mach == bfd_mach_cris_v10_v32)
46    return a;
47
48#if 0
49  /* The code below is disabled but kept as a warning.
50     See ldlang.c:lang_check.  Quite illogically, incompatible arches
51     (as signalled by this function) are only *warned* about, while with
52     this function signalling compatible ones, we can have the
53     cris_elf_merge_private_bfd_data function return an error.  This is
54     undoubtedly a FIXME: in general.  Also, the
55     command_line.warn_mismatch flag and the --no-warn-mismatch option
56     are misnamed for the multitude of ports that signal compatibility:
57     it is there an error, not a warning.  We work around it by
58     pretending matching machs here.  */
59
60  /* Except for the compatible mach, machs must match.  */
61  if (a->mach != b->mach)
62    return NULL;
63#endif
64
65  return a;
66}
67
68#define N(NUMBER, PRINT, NEXT)  \
69 { 32, 32, 8, bfd_arch_cris, NUMBER, "cris", PRINT, 1, FALSE, \
70   get_compatible, bfd_default_scan, NEXT }
71
72static const bfd_arch_info_type bfd_cris_arch_compat_v10_v32 =
73 N (bfd_mach_cris_v10_v32, "cris:common_v10_v32", NULL);
74
75static const bfd_arch_info_type bfd_cris_arch_v32 =
76 N (bfd_mach_cris_v32, "crisv32", &bfd_cris_arch_compat_v10_v32);
77
78const bfd_arch_info_type bfd_cris_arch =
79{
80  32,				/* There's 32 bits_per_word.  */
81  32,				/* There's 32 bits_per_address.  */
82  8,				/* There's 8 bits_per_byte.  */
83  bfd_arch_cris,		/* One of enum bfd_architecture, defined
84				   in archures.c and provided in
85				   generated header files.  */
86  bfd_mach_cris_v0_v10,		/* Random BFD-internal number for this
87				   machine, similarly listed in
88				   archures.c.  Not emitted in output.  */
89  "cris",			/* The arch_name.  */
90  "cris",			/* The printable name is the same.  */
91  1,				/* Section alignment power; each section
92				   is aligned to (only) 2^1 bytes.  */
93  TRUE,				/* This is the default "machine".  */
94  get_compatible,		/* A function for testing
95				   "machine" compatibility of two
96				   bfd_arch_info_type.  */
97  bfd_default_scan,		/* Check if a bfd_arch_info_type is a
98				   match.  */
99  &bfd_cris_arch_v32		/* Pointer to next bfd_arch_info_type in
100				   the same family.  */
101};
102
103/*
104 * Local variables:
105 * eval: (c-set-style "gnu")
106 * indent-tabs-mode: t
107 * End:
108 */
109