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[/] [hf-risc/] [trunk/] [tools/] [riscv-gnu-toolchain-master/] [binutils/] [bfd/] [elfxx-riscv.c] - Rev 13
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/* RISC-V-specific support for ELF. Copyright 2011-2015 Free Software Foundation, Inc. Contributed by Andrew Waterman (waterman@cs.berkeley.edu) at UC Berkeley. Based on TILE-Gx and MIPS targets. This file is part of BFD, the Binary File Descriptor library. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; see the file COPYING3. If not, see <http://www.gnu.org/licenses/>. */ #include "sysdep.h" #include "bfd.h" #include "libbfd.h" #include "elf-bfd.h" #include "elf/riscv.h" #include "opcode/riscv.h" #include "libiberty.h" #include "elfxx-riscv.h" #include <stdint.h> #define MINUS_ONE ((bfd_vma)0 - 1) /* The relocation table used for SHT_RELA sections. */ static reloc_howto_type howto_table[] = { /* No relocation. */ HOWTO (R_RISCV_NONE, /* type */ 0, /* rightshift */ 3, /* size */ 0, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_NONE", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ FALSE), /* pcrel_offset */ /* 32 bit relocation. */ HOWTO (R_RISCV_32, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_32", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ /* 64 bit relocation. */ HOWTO (R_RISCV_64, /* type */ 0, /* rightshift */ 4, /* size */ 64, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_64", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ MINUS_ONE, /* dst_mask */ FALSE), /* pcrel_offset */ /* Relocation against a local symbol in a shared object. */ HOWTO (R_RISCV_RELATIVE, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_RELATIVE", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_RISCV_COPY, /* type */ 0, /* rightshift */ 0, /* this one is variable size */ 0, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_COPY", /* name */ FALSE, /* partial_inplace */ 0x0, /* src_mask */ 0x0, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_RISCV_JUMP_SLOT, /* type */ 0, /* rightshift */ 4, /* size */ 64, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_JUMP_SLOT", /* name */ FALSE, /* partial_inplace */ 0x0, /* src_mask */ 0x0, /* dst_mask */ FALSE), /* pcrel_offset */ /* Dynamic TLS relocations. */ HOWTO (R_RISCV_TLS_DTPMOD32, /* type */ 0, /* rightshift */ 4, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_TLS_DTPMOD32", /* name */ FALSE, /* partial_inplace */ MINUS_ONE, /* src_mask */ MINUS_ONE, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_RISCV_TLS_DTPMOD64, /* type */ 0, /* rightshift */ 4, /* size */ 64, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_TLS_DTPMOD64", /* name */ FALSE, /* partial_inplace */ MINUS_ONE, /* src_mask */ MINUS_ONE, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_RISCV_TLS_DTPREL32, /* type */ 0, /* rightshift */ 4, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_TLS_DTPREL32", /* name */ TRUE, /* partial_inplace */ MINUS_ONE, /* src_mask */ MINUS_ONE, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_RISCV_TLS_DTPREL64, /* type */ 0, /* rightshift */ 4, /* size */ 64, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_TLS_DTPREL64", /* name */ TRUE, /* partial_inplace */ MINUS_ONE, /* src_mask */ MINUS_ONE, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_RISCV_TLS_TPREL32, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_TLS_TPREL32", /* name */ FALSE, /* partial_inplace */ MINUS_ONE, /* src_mask */ MINUS_ONE, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_RISCV_TLS_TPREL64, /* type */ 0, /* rightshift */ 4, /* size */ 64, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_TLS_TPREL64", /* name */ FALSE, /* partial_inplace */ MINUS_ONE, /* src_mask */ MINUS_ONE, /* dst_mask */ FALSE), /* pcrel_offset */ /* Reserved for future relocs that the dynamic linker must understand. */ EMPTY_HOWTO (12), EMPTY_HOWTO (13), EMPTY_HOWTO (14), EMPTY_HOWTO (15), /* 12-bit PC-relative branch offset. */ HOWTO (R_RISCV_BRANCH, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_BRANCH", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_SBTYPE_IMM (-1U), /* dst_mask */ TRUE), /* pcrel_offset */ /* 20-bit PC-relative jump offset. */ HOWTO (R_RISCV_JAL, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ /* This needs complex overflow detection, because the upper 36 bits must match the PC + 4. */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_JAL", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_UJTYPE_IMM (-1U), /* dst_mask */ TRUE), /* pcrel_offset */ /* 32-bit PC-relative function call (AUIPC/JALR). */ HOWTO (R_RISCV_CALL, /* type */ 0, /* rightshift */ 2, /* size */ 64, /* bitsize */ TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_CALL", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_UTYPE_IMM (-1U) | ((bfd_vma) ENCODE_ITYPE_IMM (-1U) << 32), /* dst_mask */ TRUE), /* pcrel_offset */ /* 32-bit PC-relative function call (AUIPC/JALR). */ HOWTO (R_RISCV_CALL_PLT, /* type */ 0, /* rightshift */ 2, /* size */ 64, /* bitsize */ TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_CALL_PLT", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_UTYPE_IMM (-1U) | ((bfd_vma) ENCODE_ITYPE_IMM (-1U) << 32), /* dst_mask */ TRUE), /* pcrel_offset */ /* High 20 bits of 32-bit PC-relative GOT access. */ HOWTO (R_RISCV_GOT_HI20, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_GOT_HI20", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_UTYPE_IMM (-1U), /* dst_mask */ FALSE), /* pcrel_offset */ /* High 20 bits of 32-bit PC-relative TLS IE GOT access. */ HOWTO (R_RISCV_TLS_GOT_HI20, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_TLS_GOT_HI20", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_UTYPE_IMM (-1U), /* dst_mask */ FALSE), /* pcrel_offset */ /* High 20 bits of 32-bit PC-relative TLS GD GOT reference. */ HOWTO (R_RISCV_TLS_GD_HI20, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_TLS_GD_HI20", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_UTYPE_IMM (-1U), /* dst_mask */ FALSE), /* pcrel_offset */ /* High 20 bits of 32-bit PC-relative reference. */ HOWTO (R_RISCV_PCREL_HI20, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_PCREL_HI20", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_UTYPE_IMM (-1U), /* dst_mask */ TRUE), /* pcrel_offset */ /* Low 12 bits of a 32-bit PC-relative load or add. */ HOWTO (R_RISCV_PCREL_LO12_I, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_PCREL_LO12_I", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_ITYPE_IMM (-1U), /* dst_mask */ FALSE), /* pcrel_offset */ /* Low 12 bits of a 32-bit PC-relative store. */ HOWTO (R_RISCV_PCREL_LO12_S, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_PCREL_LO12_S", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_STYPE_IMM (-1U), /* dst_mask */ FALSE), /* pcrel_offset */ /* High 20 bits of 32-bit absolute address. */ HOWTO (R_RISCV_HI20, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_HI20", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_UTYPE_IMM (-1U), /* dst_mask */ FALSE), /* pcrel_offset */ /* High 12 bits of 32-bit load or add. */ HOWTO (R_RISCV_LO12_I, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_LO12_I", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_ITYPE_IMM (-1U), /* dst_mask */ FALSE), /* pcrel_offset */ /* High 12 bits of 32-bit store. */ HOWTO (R_RISCV_LO12_S, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_LO12_S", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_STYPE_IMM (-1U), /* dst_mask */ FALSE), /* pcrel_offset */ /* High 20 bits of TLS LE thread pointer offset. */ HOWTO (R_RISCV_TPREL_HI20, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_TPREL_HI20", /* name */ TRUE, /* partial_inplace */ 0, /* src_mask */ ENCODE_UTYPE_IMM (-1U), /* dst_mask */ FALSE), /* pcrel_offset */ /* Low 12 bits of TLS LE thread pointer offset for loads and adds. */ HOWTO (R_RISCV_TPREL_LO12_I, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_TPREL_LO12_I", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_ITYPE_IMM (-1U), /* dst_mask */ FALSE), /* pcrel_offset */ /* Low 12 bits of TLS LE thread pointer offset for stores. */ HOWTO (R_RISCV_TPREL_LO12_S, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_TPREL_LO12_S", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_STYPE_IMM (-1U), /* dst_mask */ FALSE), /* pcrel_offset */ /* TLS LE thread pointer usage. */ HOWTO (R_RISCV_TPREL_ADD, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_TPREL_ADD", /* name */ TRUE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ FALSE), /* pcrel_offset */ /* 8-bit in-place addition, for local label subtraction. */ HOWTO (R_RISCV_ADD8, /* type */ 0, /* rightshift */ 0, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_ADD8", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ MINUS_ONE, /* dst_mask */ FALSE), /* pcrel_offset */ /* 16-bit in-place addition, for local label subtraction. */ HOWTO (R_RISCV_ADD16, /* type */ 0, /* rightshift */ 1, /* size */ 16, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_ADD16", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ MINUS_ONE, /* dst_mask */ FALSE), /* pcrel_offset */ /* 32-bit in-place addition, for local label subtraction. */ HOWTO (R_RISCV_ADD32, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_ADD32", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ MINUS_ONE, /* dst_mask */ FALSE), /* pcrel_offset */ /* 64-bit in-place addition, for local label subtraction. */ HOWTO (R_RISCV_ADD64, /* type */ 0, /* rightshift */ 4, /* size */ 64, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_ADD64", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ MINUS_ONE, /* dst_mask */ FALSE), /* pcrel_offset */ /* 8-bit in-place addition, for local label subtraction. */ HOWTO (R_RISCV_SUB8, /* type */ 0, /* rightshift */ 0, /* size */ 8, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_SUB8", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ MINUS_ONE, /* dst_mask */ FALSE), /* pcrel_offset */ /* 16-bit in-place addition, for local label subtraction. */ HOWTO (R_RISCV_SUB16, /* type */ 0, /* rightshift */ 1, /* size */ 16, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_SUB16", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ MINUS_ONE, /* dst_mask */ FALSE), /* pcrel_offset */ /* 32-bit in-place addition, for local label subtraction. */ HOWTO (R_RISCV_SUB32, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_SUB32", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ MINUS_ONE, /* dst_mask */ FALSE), /* pcrel_offset */ /* 64-bit in-place addition, for local label subtraction. */ HOWTO (R_RISCV_SUB64, /* type */ 0, /* rightshift */ 4, /* size */ 64, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_SUB64", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ MINUS_ONE, /* dst_mask */ FALSE), /* pcrel_offset */ /* GNU extension to record C++ vtable hierarchy */ HOWTO (R_RISCV_GNU_VTINHERIT, /* type */ 0, /* rightshift */ 4, /* size */ 0, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ NULL, /* special_function */ "R_RISCV_GNU_VTINHERIT", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ FALSE), /* pcrel_offset */ /* GNU extension to record C++ vtable member usage */ HOWTO (R_RISCV_GNU_VTENTRY, /* type */ 0, /* rightshift */ 4, /* size */ 0, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ _bfd_elf_rel_vtable_reloc_fn, /* special_function */ "R_RISCV_GNU_VTENTRY", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ FALSE), /* pcrel_offset */ /* Indicates an alignment statement. The addend field encodes how many bytes of NOPs follow the statement. The desired alignment is the addend rounded up to the next power of two. */ HOWTO (R_RISCV_ALIGN, /* type */ 0, /* rightshift */ 2, /* size */ 0, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_ALIGN", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ TRUE), /* pcrel_offset */ /* 8-bit PC-relative branch offset. */ HOWTO (R_RISCV_RVC_BRANCH, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_RVC_BRANCH", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_RVC_B_IMM (-1U), /* dst_mask */ TRUE), /* pcrel_offset */ /* 11-bit PC-relative jump offset. */ HOWTO (R_RISCV_RVC_JUMP, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ /* This needs complex overflow detection, because the upper 36 bits must match the PC + 4. */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_RVC_JUMP", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_RVC_J_IMM (-1U), /* dst_mask */ TRUE), /* pcrel_offset */ /* High 6 bits of 18-bit absolute address. */ HOWTO (R_RISCV_RVC_LUI, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_RVC_LUI", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_RVC_IMM (-1U), /* dst_mask */ FALSE), /* pcrel_offset */ /* High 12 bits of 32-bit load or add. */ HOWTO (R_RISCV_GPREL_I, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_GPREL_I", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_ITYPE_IMM (-1U), /* dst_mask */ FALSE), /* pcrel_offset */ /* High 12 bits of 32-bit store. */ HOWTO (R_RISCV_GPREL_S, /* type */ 0, /* rightshift */ 2, /* size */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_RISCV_GPREL_S", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ ENCODE_STYPE_IMM (-1U), /* dst_mask */ FALSE), /* pcrel_offset */ }; /* A mapping from BFD reloc types to RISC-V ELF reloc types. */ struct elf_reloc_map { bfd_reloc_code_real_type bfd_val; enum elf_riscv_reloc_type elf_val; }; static const struct elf_reloc_map riscv_reloc_map[] = { { BFD_RELOC_NONE, R_RISCV_NONE }, { BFD_RELOC_32, R_RISCV_32 }, { BFD_RELOC_64, R_RISCV_64 }, { BFD_RELOC_RISCV_ADD8, R_RISCV_ADD8 }, { BFD_RELOC_RISCV_ADD16, R_RISCV_ADD16 }, { BFD_RELOC_RISCV_ADD32, R_RISCV_ADD32 }, { BFD_RELOC_RISCV_ADD64, R_RISCV_ADD64 }, { BFD_RELOC_RISCV_SUB8, R_RISCV_SUB8 }, { BFD_RELOC_RISCV_SUB16, R_RISCV_SUB16 }, { BFD_RELOC_RISCV_SUB32, R_RISCV_SUB32 }, { BFD_RELOC_RISCV_SUB64, R_RISCV_SUB64 }, { BFD_RELOC_CTOR, R_RISCV_64 }, { BFD_RELOC_12_PCREL, R_RISCV_BRANCH }, { BFD_RELOC_RISCV_HI20, R_RISCV_HI20 }, { BFD_RELOC_RISCV_LO12_I, R_RISCV_LO12_I }, { BFD_RELOC_RISCV_LO12_S, R_RISCV_LO12_S }, { BFD_RELOC_RISCV_PCREL_LO12_I, R_RISCV_PCREL_LO12_I }, { BFD_RELOC_RISCV_PCREL_LO12_S, R_RISCV_PCREL_LO12_S }, { BFD_RELOC_RISCV_CALL, R_RISCV_CALL }, { BFD_RELOC_RISCV_CALL_PLT, R_RISCV_CALL_PLT }, { BFD_RELOC_RISCV_PCREL_HI20, R_RISCV_PCREL_HI20 }, { BFD_RELOC_RISCV_JMP, R_RISCV_JAL }, { BFD_RELOC_RISCV_GOT_HI20, R_RISCV_GOT_HI20 }, { BFD_RELOC_RISCV_TLS_DTPMOD32, R_RISCV_TLS_DTPMOD32 }, { BFD_RELOC_RISCV_TLS_DTPREL32, R_RISCV_TLS_DTPREL32 }, { BFD_RELOC_RISCV_TLS_DTPMOD64, R_RISCV_TLS_DTPMOD64 }, { BFD_RELOC_RISCV_TLS_DTPREL64, R_RISCV_TLS_DTPREL64 }, { BFD_RELOC_RISCV_TLS_TPREL32, R_RISCV_TLS_TPREL32 }, { BFD_RELOC_RISCV_TLS_TPREL64, R_RISCV_TLS_TPREL64 }, { BFD_RELOC_RISCV_TPREL_HI20, R_RISCV_TPREL_HI20 }, { BFD_RELOC_RISCV_TPREL_ADD, R_RISCV_TPREL_ADD }, { BFD_RELOC_RISCV_TPREL_LO12_S, R_RISCV_TPREL_LO12_S }, { BFD_RELOC_RISCV_TPREL_LO12_I, R_RISCV_TPREL_LO12_I }, { BFD_RELOC_RISCV_TLS_GOT_HI20, R_RISCV_TLS_GOT_HI20 }, { BFD_RELOC_RISCV_TLS_GD_HI20, R_RISCV_TLS_GD_HI20 }, { BFD_RELOC_RISCV_ALIGN, R_RISCV_ALIGN }, { BFD_RELOC_RISCV_RVC_BRANCH, R_RISCV_RVC_BRANCH }, { BFD_RELOC_RISCV_RVC_JUMP, R_RISCV_RVC_JUMP }, { BFD_RELOC_RISCV_RVC_LUI, R_RISCV_RVC_LUI }, { BFD_RELOC_RISCV_GPREL_I, R_RISCV_GPREL_I }, { BFD_RELOC_RISCV_GPREL_S, R_RISCV_GPREL_S }, }; /* Given a BFD reloc type, return a howto structure. */ reloc_howto_type * riscv_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) { unsigned int i; for (i = 0; i < ARRAY_SIZE (riscv_reloc_map); i++) if (riscv_reloc_map[i].bfd_val == code) return &howto_table[(int) riscv_reloc_map[i].elf_val]; bfd_set_error (bfd_error_bad_value); return NULL; } reloc_howto_type * riscv_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) { unsigned int i; for (i = 0; i < ARRAY_SIZE (howto_table); i++) if (howto_table[i].name && strcasecmp (howto_table[i].name, r_name) == 0) return &howto_table[i]; return NULL; } reloc_howto_type * riscv_elf_rtype_to_howto (unsigned int r_type) { if (r_type >= ARRAY_SIZE (howto_table)) { (*_bfd_error_handler) (_("unrecognized relocation (0x%x)"), r_type); bfd_set_error (bfd_error_bad_value); return NULL; } return &howto_table[r_type]; }