Commit | Line | Data |
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252b5132 | 1 | /* BFD support for the ARC processor |
219d1afa | 2 | Copyright (C) 1994-2018 Free Software Foundation, Inc. |
252b5132 RH |
3 | Contributed by Doug Evans (dje@cygnus.com). |
4 | ||
cd123cb7 | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
cd123cb7 NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
252b5132 | 11 | |
cd123cb7 NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
cd123cb7 NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
20 | MA 02110-1301, USA. */ | |
252b5132 | 21 | |
252b5132 | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
252b5132 RH |
24 | #include "libbfd.h" |
25 | ||
64984c22 AK |
26 | static const bfd_arch_info_type * |
27 | arc_compatible (const bfd_arch_info_type *a, const bfd_arch_info_type *b); | |
28 | ||
252b5132 RH |
29 | #define ARC(mach, print_name, default_p, next) \ |
30 | { \ | |
0d2bcfaf NC |
31 | 32, /* 32 bits in a word */ \ |
32 | 32, /* 32 bits in an address */ \ | |
33 | 8, /* 8 bits in a byte */ \ | |
252b5132 RH |
34 | bfd_arch_arc, \ |
35 | mach, \ | |
36 | "arc", \ | |
37 | print_name, \ | |
0d2bcfaf | 38 | 4, /* section alignment power */ \ |
252b5132 | 39 | default_p, \ |
64984c22 | 40 | arc_compatible, \ |
252b5132 | 41 | bfd_default_scan, \ |
b7761f11 | 42 | bfd_arch_default_fill, \ |
252b5132 RH |
43 | next, \ |
44 | } | |
45 | ||
252b5132 RH |
46 | static const bfd_arch_info_type arch_info_struct[] = |
47 | { | |
37cd3877 AK |
48 | ARC (bfd_mach_arc_arc600, "A6" , FALSE, &arch_info_struct[1]), |
49 | ARC (bfd_mach_arc_arc601, "ARC601", FALSE, &arch_info_struct[2]), | |
50 | ARC (bfd_mach_arc_arc700, "ARC700", FALSE, &arch_info_struct[3]), | |
51 | ARC (bfd_mach_arc_arc700, "A7", FALSE, &arch_info_struct[4]), | |
52 | ARC (bfd_mach_arc_arcv2, "ARCv2", FALSE, &arch_info_struct[5]), | |
53 | ARC (bfd_mach_arc_arcv2, "EM", FALSE, &arch_info_struct[6]), | |
886a2506 | 54 | ARC (bfd_mach_arc_arcv2, "HS", FALSE, NULL), |
252b5132 | 55 | }; |
252b5132 RH |
56 | |
57 | const bfd_arch_info_type bfd_arc_arch = | |
bdbca4e6 | 58 | ARC (bfd_mach_arc_arc600, "ARC600", TRUE, &arch_info_struct[0]); |
64984c22 AK |
59 | |
60 | /* ARC-specific "compatible" function. The general rule is that if A and B are | |
61 | compatible, then this function should return architecture that is more | |
62 | "feature-rich", that is, can run both A and B. ARCv2, EM and HS all has | |
63 | same mach number, so bfd_default_compatible assumes they are the same, and | |
64 | returns an A. That causes issues with GDB, because GDB assumes that if | |
65 | machines are compatible, then "compatible ()" always returns same machine | |
66 | regardless of argument order. As a result GDB gets confused because, for | |
67 | example, compatible (ARCv2, EM) returns ARCv2, but compatible (EM, ARCv2) | |
68 | returns EM, hence GDB is not sure if they are compatible and prints a | |
69 | warning. */ | |
70 | ||
71 | static const bfd_arch_info_type * | |
72 | arc_compatible (const bfd_arch_info_type *a, const bfd_arch_info_type *b) | |
73 | { | |
74 | const bfd_arch_info_type * const em = &arch_info_struct[5]; | |
75 | const bfd_arch_info_type * const hs = &arch_info_struct[6]; | |
76 | ||
77 | /* Trivial case where a and b is the same instance. Some callers already | |
78 | check this condition but some do not and get an invalid result. */ | |
79 | if (a == b) | |
80 | return a; | |
81 | ||
82 | /* If a & b are for different architecture we can do nothing. */ | |
83 | if (a->arch != b->arch) | |
84 | return NULL; | |
85 | ||
86 | if (a->bits_per_word != b->bits_per_word) | |
87 | return NULL; | |
88 | ||
89 | /* ARCv2|EM and EM. */ | |
90 | if ((a->mach == bfd_mach_arc_arcv2 && b == em) | |
91 | || (b->mach == bfd_mach_arc_arcv2 && a == em)) | |
92 | return em; | |
93 | ||
94 | /* ARCv2|HS and HS. */ | |
95 | if ((a->mach == bfd_mach_arc_arcv2 && b == hs) | |
96 | || (b->mach == bfd_mach_arc_arcv2 && a == hs)) | |
97 | return hs; | |
98 | ||
99 | return bfd_default_compatible (a, b); | |
100 | } |