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e23eba97 | 1 | /* RISC-V ELF support for BFD. |
fd67aa11 | 2 | Copyright (C) 2011-2024 Free Software Foundation, Inc. |
e23eba97 NC |
3 | |
4 | Contributed by Andrew Waterman (andrew@sifive.com). | |
5 | Based on MIPS ELF support for BFD, by Ian Lance Taylor. | |
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 | /* This file holds definitions specific to the RISCV ELF ABI. Note | |
24 | that most of this is not actually implemented by BFD. */ | |
25 | ||
26 | #ifndef _ELF_RISCV_H | |
27 | #define _ELF_RISCV_H | |
28 | ||
29 | #include "elf/reloc-macros.h" | |
30 | #include "libiberty.h" | |
31 | ||
32 | /* Relocation types. */ | |
33 | START_RELOC_NUMBERS (elf_riscv_reloc_type) | |
34 | /* Relocation types used by the dynamic linker. */ | |
35 | RELOC_NUMBER (R_RISCV_NONE, 0) | |
36 | RELOC_NUMBER (R_RISCV_32, 1) | |
37 | RELOC_NUMBER (R_RISCV_64, 2) | |
38 | RELOC_NUMBER (R_RISCV_RELATIVE, 3) | |
39 | RELOC_NUMBER (R_RISCV_COPY, 4) | |
40 | RELOC_NUMBER (R_RISCV_JUMP_SLOT, 5) | |
41 | RELOC_NUMBER (R_RISCV_TLS_DTPMOD32, 6) | |
42 | RELOC_NUMBER (R_RISCV_TLS_DTPMOD64, 7) | |
43 | RELOC_NUMBER (R_RISCV_TLS_DTPREL32, 8) | |
44 | RELOC_NUMBER (R_RISCV_TLS_DTPREL64, 9) | |
45 | RELOC_NUMBER (R_RISCV_TLS_TPREL32, 10) | |
46 | RELOC_NUMBER (R_RISCV_TLS_TPREL64, 11) | |
dc1470f1 | 47 | RELOC_NUMBER (R_RISCV_TLSDESC, 12) |
e23eba97 NC |
48 | |
49 | /* Relocation types not used by the dynamic linker. */ | |
50 | RELOC_NUMBER (R_RISCV_BRANCH, 16) | |
51 | RELOC_NUMBER (R_RISCV_JAL, 17) | |
52 | RELOC_NUMBER (R_RISCV_CALL, 18) | |
53 | RELOC_NUMBER (R_RISCV_CALL_PLT, 19) | |
54 | RELOC_NUMBER (R_RISCV_GOT_HI20, 20) | |
55 | RELOC_NUMBER (R_RISCV_TLS_GOT_HI20, 21) | |
56 | RELOC_NUMBER (R_RISCV_TLS_GD_HI20, 22) | |
57 | RELOC_NUMBER (R_RISCV_PCREL_HI20, 23) | |
58 | RELOC_NUMBER (R_RISCV_PCREL_LO12_I, 24) | |
59 | RELOC_NUMBER (R_RISCV_PCREL_LO12_S, 25) | |
60 | RELOC_NUMBER (R_RISCV_HI20, 26) | |
61 | RELOC_NUMBER (R_RISCV_LO12_I, 27) | |
62 | RELOC_NUMBER (R_RISCV_LO12_S, 28) | |
63 | RELOC_NUMBER (R_RISCV_TPREL_HI20, 29) | |
64 | RELOC_NUMBER (R_RISCV_TPREL_LO12_I, 30) | |
65 | RELOC_NUMBER (R_RISCV_TPREL_LO12_S, 31) | |
66 | RELOC_NUMBER (R_RISCV_TPREL_ADD, 32) | |
67 | RELOC_NUMBER (R_RISCV_ADD8, 33) | |
68 | RELOC_NUMBER (R_RISCV_ADD16, 34) | |
69 | RELOC_NUMBER (R_RISCV_ADD32, 35) | |
70 | RELOC_NUMBER (R_RISCV_ADD64, 36) | |
71 | RELOC_NUMBER (R_RISCV_SUB8, 37) | |
72 | RELOC_NUMBER (R_RISCV_SUB16, 38) | |
73 | RELOC_NUMBER (R_RISCV_SUB32, 39) | |
74 | RELOC_NUMBER (R_RISCV_SUB64, 40) | |
e23eba97 NC |
75 | RELOC_NUMBER (R_RISCV_ALIGN, 43) |
76 | RELOC_NUMBER (R_RISCV_RVC_BRANCH, 44) | |
77 | RELOC_NUMBER (R_RISCV_RVC_JUMP, 45) | |
78 | RELOC_NUMBER (R_RISCV_RVC_LUI, 46) | |
79 | RELOC_NUMBER (R_RISCV_GPREL_I, 47) | |
80 | RELOC_NUMBER (R_RISCV_GPREL_S, 48) | |
45f76423 AW |
81 | RELOC_NUMBER (R_RISCV_TPREL_I, 49) |
82 | RELOC_NUMBER (R_RISCV_TPREL_S, 50) | |
83 | RELOC_NUMBER (R_RISCV_RELAX, 51) | |
84 | RELOC_NUMBER (R_RISCV_SUB6, 52) | |
85 | RELOC_NUMBER (R_RISCV_SET6, 53) | |
86 | RELOC_NUMBER (R_RISCV_SET8, 54) | |
87 | RELOC_NUMBER (R_RISCV_SET16, 55) | |
88 | RELOC_NUMBER (R_RISCV_SET32, 56) | |
a6cbf936 | 89 | RELOC_NUMBER (R_RISCV_32_PCREL, 57) |
02dd9d25 | 90 | RELOC_NUMBER (R_RISCV_IRELATIVE, 58) |
f1cd8b94 KLC |
91 | /* Reserved 59 for R_RISCV_PLT32. */ |
92 | RELOC_NUMBER (R_RISCV_SET_ULEB128, 60) | |
93 | RELOC_NUMBER (R_RISCV_SUB_ULEB128, 61) | |
dc1470f1 TI |
94 | RELOC_NUMBER (R_RISCV_TLSDESC_HI20, 62) |
95 | RELOC_NUMBER (R_RISCV_TLSDESC_LOAD_LO12, 63) | |
96 | RELOC_NUMBER (R_RISCV_TLSDESC_ADD_LO12, 64) | |
97 | RELOC_NUMBER (R_RISCV_TLSDESC_CALL, 65) | |
e23eba97 NC |
98 | END_RELOC_NUMBERS (R_RISCV_max) |
99 | ||
0c4b8ed6 NC |
100 | /* Internal relocations used exclusively by the relaxation pass. */ |
101 | #define R_RISCV_DELETE (R_RISCV_max) | |
102 | #define R_RISCV_RVC_LUI (R_RISCV_max + 1) | |
103 | #define R_RISCV_GPREL_I (R_RISCV_max + 2) | |
104 | #define R_RISCV_GPREL_S (R_RISCV_max + 3) | |
105 | #define R_RISCV_TPREL_I (R_RISCV_max + 4) | |
106 | #define R_RISCV_TPREL_S (R_RISCV_max + 5) | |
107 | ||
e23eba97 NC |
108 | /* Processor specific flags for the ELF header e_flags field. */ |
109 | ||
110 | /* File may contain compressed instructions. */ | |
111 | #define EF_RISCV_RVC 0x0001 | |
112 | ||
2922d21d AW |
113 | /* Which floating-point ABI a file uses. */ |
114 | #define EF_RISCV_FLOAT_ABI 0x0006 | |
115 | ||
116 | /* File uses the soft-float ABI. */ | |
117 | #define EF_RISCV_FLOAT_ABI_SOFT 0x0000 | |
118 | ||
119 | /* File uses the single-float ABI. */ | |
120 | #define EF_RISCV_FLOAT_ABI_SINGLE 0x0002 | |
121 | ||
122 | /* File uses the double-float ABI. */ | |
123 | #define EF_RISCV_FLOAT_ABI_DOUBLE 0x0004 | |
124 | ||
125 | /* File uses the quad-float ABI. */ | |
126 | #define EF_RISCV_FLOAT_ABI_QUAD 0x0006 | |
e23eba97 | 127 | |
7f999549 JW |
128 | /* File uses the 32E base integer instruction. */ |
129 | #define EF_RISCV_RVE 0x0008 | |
130 | ||
b5292032 PD |
131 | /* The name of the global pointer symbol. */ |
132 | #define RISCV_GP_SYMBOL "__global_pointer$" | |
133 | ||
8155b853 NC |
134 | /* Processor specific dynamic array tags. */ |
135 | #define DT_RISCV_VARIANT_CC (DT_LOPROC + 1) | |
136 | ||
137 | /* RISC-V specific values for st_other. */ | |
138 | #define STO_RISCV_VARIANT_CC 0x80 | |
139 | ||
96462b01 S |
140 | /* File uses the TSO model. */ |
141 | #define EF_RISCV_TSO 0x0010 | |
142 | ||
2dc8dd17 | 143 | /* Additional section types. */ |
dcd709e0 | 144 | #define SHT_RISCV_ATTRIBUTES 0x70000003 /* Section holds attributes. */ |
2dc8dd17 | 145 | |
fbc95f1e KC |
146 | /* Processor specific program header types. */ |
147 | ||
148 | /* Location of RISC-V ELF attribute section. */ | |
149 | #define PT_RISCV_ATTRIBUTES 0x70000003 | |
150 | ||
2dc8dd17 | 151 | /* Object attributes. */ |
2dc8dd17 JW |
152 | enum |
153 | { | |
154 | /* 0-3 are generic. */ | |
155 | Tag_RISCV_stack_align = 4, | |
156 | Tag_RISCV_arch = 5, | |
157 | Tag_RISCV_unaligned_access = 6, | |
158 | Tag_RISCV_priv_spec = 8, | |
159 | Tag_RISCV_priv_spec_minor = 10, | |
160 | Tag_RISCV_priv_spec_revision = 12 | |
161 | }; | |
162 | ||
e23eba97 | 163 | #endif /* _ELF_RISCV_H */ |