1 /* RISC-V ELF support for BFD. 2 Copyright (C) 2011-2020 Free Software Foundation, Inc. 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) 47 48 /* Relocation types not used by the dynamic linker. */ 49 RELOC_NUMBER (R_RISCV_BRANCH, 16) 50 RELOC_NUMBER (R_RISCV_JAL, 17) 51 RELOC_NUMBER (R_RISCV_CALL, 18) 52 RELOC_NUMBER (R_RISCV_CALL_PLT, 19) 53 RELOC_NUMBER (R_RISCV_GOT_HI20, 20) 54 RELOC_NUMBER (R_RISCV_TLS_GOT_HI20, 21) 55 RELOC_NUMBER (R_RISCV_TLS_GD_HI20, 22) 56 RELOC_NUMBER (R_RISCV_PCREL_HI20, 23) 57 RELOC_NUMBER (R_RISCV_PCREL_LO12_I, 24) 58 RELOC_NUMBER (R_RISCV_PCREL_LO12_S, 25) 59 RELOC_NUMBER (R_RISCV_HI20, 26) 60 RELOC_NUMBER (R_RISCV_LO12_I, 27) 61 RELOC_NUMBER (R_RISCV_LO12_S, 28) 62 RELOC_NUMBER (R_RISCV_TPREL_HI20, 29) 63 RELOC_NUMBER (R_RISCV_TPREL_LO12_I, 30) 64 RELOC_NUMBER (R_RISCV_TPREL_LO12_S, 31) 65 RELOC_NUMBER (R_RISCV_TPREL_ADD, 32) 66 RELOC_NUMBER (R_RISCV_ADD8, 33) 67 RELOC_NUMBER (R_RISCV_ADD16, 34) 68 RELOC_NUMBER (R_RISCV_ADD32, 35) 69 RELOC_NUMBER (R_RISCV_ADD64, 36) 70 RELOC_NUMBER (R_RISCV_SUB8, 37) 71 RELOC_NUMBER (R_RISCV_SUB16, 38) 72 RELOC_NUMBER (R_RISCV_SUB32, 39) 73 RELOC_NUMBER (R_RISCV_SUB64, 40) 74 RELOC_NUMBER (R_RISCV_GNU_VTINHERIT, 41) 75 RELOC_NUMBER (R_RISCV_GNU_VTENTRY, 42) 76 RELOC_NUMBER (R_RISCV_ALIGN, 43) 77 RELOC_NUMBER (R_RISCV_RVC_BRANCH, 44) 78 RELOC_NUMBER (R_RISCV_RVC_JUMP, 45) 79 RELOC_NUMBER (R_RISCV_RVC_LUI, 46) 80 RELOC_NUMBER (R_RISCV_GPREL_I, 47) 81 RELOC_NUMBER (R_RISCV_GPREL_S, 48) 82 RELOC_NUMBER (R_RISCV_TPREL_I, 49) 83 RELOC_NUMBER (R_RISCV_TPREL_S, 50) 84 RELOC_NUMBER (R_RISCV_RELAX, 51) 85 RELOC_NUMBER (R_RISCV_SUB6, 52) 86 RELOC_NUMBER (R_RISCV_SET6, 53) 87 RELOC_NUMBER (R_RISCV_SET8, 54) 88 RELOC_NUMBER (R_RISCV_SET16, 55) 89 RELOC_NUMBER (R_RISCV_SET32, 56) 90 RELOC_NUMBER (R_RISCV_32_PCREL, 57) 91 END_RELOC_NUMBERS (R_RISCV_max) 92 93 /* Processor specific flags for the ELF header e_flags field. */ 94 95 /* File may contain compressed instructions. */ 96 #define EF_RISCV_RVC 0x0001 97 98 /* Which floating-point ABI a file uses. */ 99 #define EF_RISCV_FLOAT_ABI 0x0006 100 101 /* File uses the soft-float ABI. */ 102 #define EF_RISCV_FLOAT_ABI_SOFT 0x0000 103 104 /* File uses the single-float ABI. */ 105 #define EF_RISCV_FLOAT_ABI_SINGLE 0x0002 106 107 /* File uses the double-float ABI. */ 108 #define EF_RISCV_FLOAT_ABI_DOUBLE 0x0004 109 110 /* File uses the quad-float ABI. */ 111 #define EF_RISCV_FLOAT_ABI_QUAD 0x0006 112 113 /* File uses the 32E base integer instruction. */ 114 #define EF_RISCV_RVE 0x0008 115 116 /* The name of the global pointer symbol. */ 117 #define RISCV_GP_SYMBOL "__global_pointer$" 118 119 /* Additional section types. */ 120 #define SHT_RISCV_ATTRIBUTES 0x70000003 /* Section holds attributes. */ 121 122 /* Object attributes. */ 123 124 enum 125 { 126 /* 0-3 are generic. */ 127 Tag_RISCV_stack_align = 4, 128 Tag_RISCV_arch = 5, 129 Tag_RISCV_unaligned_access = 6, 130 Tag_RISCV_priv_spec = 8, 131 Tag_RISCV_priv_spec_minor = 10, 132 Tag_RISCV_priv_spec_revision = 12 133 }; 134 135 #endif /* _ELF_RISCV_H */ 136