cpu-cris.c revision 1.1.1.2 
1/* BFD support for the Axis CRIS architecture.
2   Copyright 2000, 2002, 2004, 2005, 2007, 2012
3   Free Software Foundation, Inc.
4   Contributed by Axis Communications AB.
5   Written by Hans-Peter Nilsson.
6
7   This file is part of BFD, the Binary File Descriptor library.
8
9   This program is free software; you can redistribute it and/or modify
10   it under the terms of the GNU General Public License as published by
11   the Free Software Foundation; either version 3 of the License, or
12   (at your option) any later version.
13
14   This program is distributed in the hope that it will be useful,
15   but WITHOUT ANY WARRANTY; without even the implied warranty of
16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17   GNU General Public License for more details.
18
19   You should have received a copy of the GNU General Public License
20   along with this program; if not, write to the Free Software
21   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22   MA 02110-1301, USA.  */
23
24#include "sysdep.h"
25#include "bfd.h"
26#include "libbfd.h"
27
28/* This routine is provided two arch_infos and returns the lowest common
29   denominator.  CRIS v0..v10 vs. v32 are not compatible in general, but
30   there's a compatible subset for which we provide an arch_info.  */
31
32static const bfd_arch_info_type * get_compatible
33  (const bfd_arch_info_type *, const bfd_arch_info_type *);
34
35static const bfd_arch_info_type *
36get_compatible (const bfd_arch_info_type *a,
37		const bfd_arch_info_type *b)
38{
39  /* Arches must match.  */
40  if (a->arch != b->arch)
41   return NULL;
42
43  /* If either is the compatible mach, return the other.  */
44  if (a->mach == bfd_mach_cris_v10_v32)
45    return b;
46  if (b->mach == bfd_mach_cris_v10_v32)
47    return a;
48
49#if 0
50  /* The code below is disabled but kept as a warning.
51     See ldlang.c:lang_check.  Quite illogically, incompatible arches
52     (as signalled by this function) are only *warned* about, while with
53     this function signalling compatible ones, we can have the
54     cris_elf_merge_private_bfd_data function return an error.  This is
55     undoubtedly a FIXME: in general.  Also, the
56     command_line.warn_mismatch flag and the --no-warn-mismatch option
57     are misnamed for the multitude of ports that signal compatibility:
58     it is there an error, not a warning.  We work around it by
59     pretending matching machs here.  */
60
61  /* Except for the compatible mach, machs must match.  */
62  if (a->mach != b->mach)
63    return NULL;
64#endif
65
66  return a;
67}
68
69#define N(NUMBER, PRINT, NEXT)  \
70 { 32, 32, 8, bfd_arch_cris, NUMBER, "cris", PRINT, 1, FALSE, \
71   get_compatible, bfd_default_scan, bfd_arch_default_fill, NEXT }
72
73static const bfd_arch_info_type bfd_cris_arch_compat_v10_v32 =
74 N (bfd_mach_cris_v10_v32, "cris:common_v10_v32", NULL);
75
76static const bfd_arch_info_type bfd_cris_arch_v32 =
77 N (bfd_mach_cris_v32, "crisv32", &bfd_cris_arch_compat_v10_v32);
78
79const bfd_arch_info_type bfd_cris_arch =
80{
81  32,				/* There's 32 bits_per_word.  */
82  32,				/* There's 32 bits_per_address.  */
83  8,				/* There's 8 bits_per_byte.  */
84  bfd_arch_cris,		/* One of enum bfd_architecture, defined
85				   in archures.c and provided in
86				   generated header files.  */
87  bfd_mach_cris_v0_v10,		/* Random BFD-internal number for this
88				   machine, similarly listed in
89				   archures.c.  Not emitted in output.  */
90  "cris",			/* The arch_name.  */
91  "cris",			/* The printable name is the same.  */
92  1,				/* Section alignment power; each section
93				   is aligned to (only) 2^1 bytes.  */
94  TRUE,				/* This is the default "machine".  */
95  get_compatible,		/* A function for testing
96				   "machine" compatibility of two
97				   bfd_arch_info_type.  */
98  bfd_default_scan,		/* Check if a bfd_arch_info_type is a
99				   match.  */
100  bfd_arch_default_fill,	/* Default fill.  */
101  &bfd_cris_arch_v32		/* Pointer to next bfd_arch_info_type in
102				   the same family.  */
103};
104
105/*
106 * Local variables:
107 * eval: (c-set-style "gnu")
108 * indent-tabs-mode: t
109 * End:
110 */
111