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e23eba97 | 1 | /* BFD backend for RISC-V |
b3adc24a | 2 | Copyright (C) 2011-2020 Free Software Foundation, Inc. |
e23eba97 NC |
3 | |
4 | Contributed by Andrew Waterman (andrew@sifive.com). | |
5 | Based on MIPS target. | |
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; see the file COPYING3. If not, | |
21 | see <http://www.gnu.org/licenses/>. */ | |
22 | ||
23 | #include "sysdep.h" | |
24 | #include "bfd.h" | |
25 | #include "libbfd.h" | |
26 | ||
27 | /* This routine is provided two arch_infos and returns an arch_info | |
28 | that is compatible with both, or NULL if none exists. */ | |
29 | ||
30 | static const bfd_arch_info_type * | |
31 | riscv_compatible (const bfd_arch_info_type *a, const bfd_arch_info_type *b) | |
32 | { | |
33 | if (a->arch != b->arch) | |
34 | return NULL; | |
35 | ||
36 | /* Machine compatibility is checked in | |
37 | _bfd_riscv_elf_merge_private_bfd_data. */ | |
38 | ||
39 | return a; | |
40 | } | |
41 | ||
c35d018b JW |
42 | /* Return TRUE if STRING matches the architecture described by INFO. */ |
43 | ||
44 | static bfd_boolean | |
45 | riscv_scan (const struct bfd_arch_info *info, const char *string) | |
46 | { | |
47 | if (bfd_default_scan (info, string)) | |
48 | return TRUE; | |
49 | ||
069057bf AB |
50 | /* The incoming STRING might take the form of riscv:rvXXzzz, where XX is |
51 | 32 or 64, and zzz are one or more extension characters. As we | |
52 | currently only have 3 architectures defined, 'riscv', 'riscv:rv32', | |
53 | and 'riscv:rv64', we would like to ignore the zzz for the purpose of | |
54 | matching here. | |
55 | ||
56 | However, we don't want the default 'riscv' to match over a more | |
57 | specific 'riscv:rv32' or 'riscv:rv64', so in the case of the default | |
58 | architecture (with the shorter 'riscv' name) we don't allow any | |
59 | special matching, but for the 'riscv:rvXX' cases, we allow a match | |
60 | with any additional trailing characters being ignored. */ | |
61 | if (!info->the_default | |
62 | && strncasecmp (string, info->printable_name, | |
63 | strlen (info->printable_name)) == 0) | |
c35d018b JW |
64 | return TRUE; |
65 | ||
66 | return FALSE; | |
67 | } | |
68 | ||
aebcfb76 | 69 | #define N(BITS, NUMBER, PRINT, DEFAULT, NEXT) \ |
e23eba97 | 70 | { \ |
aebcfb76 NC |
71 | BITS, /* Bits in a word. */ \ |
72 | BITS, /* Bits in an address. */ \ | |
73 | 8, /* Bits in a byte. */ \ | |
e23eba97 NC |
74 | bfd_arch_riscv, \ |
75 | NUMBER, \ | |
76 | "riscv", \ | |
77 | PRINT, \ | |
78 | 3, \ | |
79 | DEFAULT, \ | |
80 | riscv_compatible, \ | |
c35d018b | 81 | riscv_scan, \ |
e23eba97 NC |
82 | bfd_arch_default_fill, \ |
83 | NEXT, \ | |
aebcfb76 | 84 | 0 /* Maximum offset of a reloc from the start of an insn. */\ |
e23eba97 NC |
85 | } |
86 | ||
87 | /* This enum must be kept in the same order as arch_info_struct. */ | |
88 | enum | |
89 | { | |
90 | I_riscv64, | |
91 | I_riscv32 | |
92 | }; | |
93 | ||
94 | #define NN(index) (&arch_info_struct[(index) + 1]) | |
95 | ||
96 | /* This array must be kept in the same order as the anonymous enum above, | |
97 | and each entry except the last should end with NN (my enum value). */ | |
98 | static const bfd_arch_info_type arch_info_struct[] = | |
99 | { | |
aebcfb76 NC |
100 | N (64, bfd_mach_riscv64, "riscv:rv64", FALSE, NN (I_riscv64)), |
101 | N (32, bfd_mach_riscv32, "riscv:rv32", FALSE, NULL) | |
e23eba97 NC |
102 | }; |
103 | ||
104 | /* The default architecture is riscv:rv64. */ | |
105 | ||
106 | const bfd_arch_info_type bfd_riscv_arch = | |
aebcfb76 | 107 | N (64, 0, "riscv", TRUE, &arch_info_struct[0]); |