1 /* BFD support for the Axis CRIS architecture.
2 Copyright (C) 2000-2021 Free Software Foundation, Inc.
3 Contributed by Axis Communications AB.
4 Written by Hans-Peter Nilsson.
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
22
23 #include "sysdep.h"
24 #include "bfd.h"
25 #include "libbfd.h"
26
27 /* This routine is provided two arch_infos and returns the lowest common
28 denominator. CRIS v0..v10 vs. v32 are not compatible in general, but
29 there's a compatible subset for which we provide an arch_info. */
30
31 static const bfd_arch_info_type * get_compatible
32 (const bfd_arch_info_type *, const bfd_arch_info_type *);
33
34 static const bfd_arch_info_type *
get_compatible(const bfd_arch_info_type * a,const bfd_arch_info_type * b)35 get_compatible (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, bfd_arch_default_fill, NEXT, 0 }
71
72 static const bfd_arch_info_type bfd_cris_arch_compat_v10_v32 =
73 N (bfd_mach_cris_v10_v32, "cris:common_v10_v32", NULL);
74
75 static const bfd_arch_info_type bfd_cris_arch_v32 =
76 N (bfd_mach_cris_v32, "crisv32", &bfd_cris_arch_compat_v10_v32);
77
78 const 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_arch_default_fill, /* Default fill. */
100 &bfd_cris_arch_v32, /* Pointer to next bfd_arch_info_type in
101 the same family. */
102 0 /* Maximum offset of a reloc from the start of an insn. */
103 };
104
105 /*
106 * Local variables:
107 * eval: (c-set-style "gnu")
108 * indent-tabs-mode: t
109 * End:
110 */
111