1/* RISC-V ELF support for BFD. 2 Copyright (C) 2011-2022 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. */ 33START_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 RELOC_NUMBER (R_RISCV_IRELATIVE, 58) 92END_RELOC_NUMBERS (R_RISCV_max) 93 94/* Processor specific flags for the ELF header e_flags field. */ 95 96/* File may contain compressed instructions. */ 97#define EF_RISCV_RVC 0x0001 98 99/* Which floating-point ABI a file uses. */ 100#define EF_RISCV_FLOAT_ABI 0x0006 101 102/* File uses the soft-float ABI. */ 103#define EF_RISCV_FLOAT_ABI_SOFT 0x0000 104 105/* File uses the single-float ABI. */ 106#define EF_RISCV_FLOAT_ABI_SINGLE 0x0002 107 108/* File uses the double-float ABI. */ 109#define EF_RISCV_FLOAT_ABI_DOUBLE 0x0004 110 111/* File uses the quad-float ABI. */ 112#define EF_RISCV_FLOAT_ABI_QUAD 0x0006 113 114/* File uses the 32E base integer instruction. */ 115#define EF_RISCV_RVE 0x0008 116 117/* The name of the global pointer symbol. */ 118#define RISCV_GP_SYMBOL "__global_pointer$" 119 120/* Processor specific dynamic array tags. */ 121#define DT_RISCV_VARIANT_CC (DT_LOPROC + 1) 122 123/* RISC-V specific values for st_other. */ 124#define STO_RISCV_VARIANT_CC 0x80 125 126/* Additional section types. */ 127#define SHT_RISCV_ATTRIBUTES 0x70000003 /* Section holds attributes. */ 128 129/* Processor specific program header types. */ 130 131/* Location of RISC-V ELF attribute section. */ 132#define PT_RISCV_ATTRIBUTES 0x70000003 133 134/* Object attributes. */ 135enum 136{ 137 /* 0-3 are generic. */ 138 Tag_RISCV_stack_align = 4, 139 Tag_RISCV_arch = 5, 140 Tag_RISCV_unaligned_access = 6, 141 Tag_RISCV_priv_spec = 8, 142 Tag_RISCV_priv_spec_minor = 10, 143 Tag_RISCV_priv_spec_revision = 12 144}; 145 146#endif /* _ELF_RISCV_H */ 147