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serginhofr |
/* RISC-V-specific support for ELF.
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Copyright 2011-2015 Free Software Foundation, Inc.
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Contributed by Andrew Waterman (waterman@cs.berkeley.edu) at UC Berkeley.
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Based on TILE-Gx and MIPS targets.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING3. If not,
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see <http://www.gnu.org/licenses/>. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "elf/riscv.h"
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#include "opcode/riscv.h"
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#include "libiberty.h"
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#include "elfxx-riscv.h"
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#include <stdint.h>
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#define MINUS_ONE ((bfd_vma)0 - 1)
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/* The relocation table used for SHT_RELA sections. */
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static reloc_howto_type howto_table[] =
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{
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/* No relocation. */
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HOWTO (R_RISCV_NONE, /* type */
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0, /* rightshift */
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3, /* size */
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0, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_RISCV_NONE", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* 32 bit relocation. */
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HOWTO (R_RISCV_32, /* type */
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0, /* rightshift */
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2, /* size */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_RISCV_32", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* 64 bit relocation. */
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HOWTO (R_RISCV_64, /* type */
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0, /* rightshift */
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4, /* size */
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64, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_RISCV_64", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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MINUS_ONE, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* Relocation against a local symbol in a shared object. */
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HOWTO (R_RISCV_RELATIVE, /* type */
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0, /* rightshift */
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2, /* size */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_RISCV_RELATIVE", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_RISCV_COPY, /* type */
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0, /* rightshift */
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0, /* this one is variable size */
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0, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_RISCV_COPY", /* name */
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FALSE, /* partial_inplace */
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0x0, /* src_mask */
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0x0, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_RISCV_JUMP_SLOT, /* type */
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0, /* rightshift */
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4, /* size */
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64, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_RISCV_JUMP_SLOT", /* name */
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FALSE, /* partial_inplace */
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0x0, /* src_mask */
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0x0, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* Dynamic TLS relocations. */
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HOWTO (R_RISCV_TLS_DTPMOD32, /* type */
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0, /* rightshift */
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4, /* size */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_RISCV_TLS_DTPMOD32", /* name */
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FALSE, /* partial_inplace */
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MINUS_ONE, /* src_mask */
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MINUS_ONE, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_RISCV_TLS_DTPMOD64, /* type */
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0, /* rightshift */
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4, /* size */
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64, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_RISCV_TLS_DTPMOD64", /* name */
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FALSE, /* partial_inplace */
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MINUS_ONE, /* src_mask */
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MINUS_ONE, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_RISCV_TLS_DTPREL32, /* type */
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0, /* rightshift */
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4, /* size */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_RISCV_TLS_DTPREL32", /* name */
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TRUE, /* partial_inplace */
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MINUS_ONE, /* src_mask */
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MINUS_ONE, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_RISCV_TLS_DTPREL64, /* type */
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0, /* rightshift */
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4, /* size */
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64, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_RISCV_TLS_DTPREL64", /* name */
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TRUE, /* partial_inplace */
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MINUS_ONE, /* src_mask */
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MINUS_ONE, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_RISCV_TLS_TPREL32, /* type */
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0, /* rightshift */
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2, /* size */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_RISCV_TLS_TPREL32", /* name */
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FALSE, /* partial_inplace */
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MINUS_ONE, /* src_mask */
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MINUS_ONE, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_RISCV_TLS_TPREL64, /* type */
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0, /* rightshift */
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4, /* size */
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64, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_RISCV_TLS_TPREL64", /* name */
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FALSE, /* partial_inplace */
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MINUS_ONE, /* src_mask */
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MINUS_ONE, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* Reserved for future relocs that the dynamic linker must understand. */
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EMPTY_HOWTO (12),
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EMPTY_HOWTO (13),
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EMPTY_HOWTO (14),
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EMPTY_HOWTO (15),
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/* 12-bit PC-relative branch offset. */
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HOWTO (R_RISCV_BRANCH, /* type */
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0, /* rightshift */
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2, /* size */
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32, /* bitsize */
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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_RISCV_BRANCH", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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ENCODE_SBTYPE_IMM (-1U), /* dst_mask */
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TRUE), /* pcrel_offset */
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/* 20-bit PC-relative jump offset. */
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HOWTO (R_RISCV_JAL, /* type */
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0, /* rightshift */
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2, /* size */
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32, /* bitsize */
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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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/* This needs complex overflow
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detection, because the upper 36
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bits must match the PC + 4. */
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bfd_elf_generic_reloc, /* special_function */
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"R_RISCV_JAL", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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ENCODE_UJTYPE_IMM (-1U), /* dst_mask */
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TRUE), /* pcrel_offset */
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/* 32-bit PC-relative function call (AUIPC/JALR). */
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HOWTO (R_RISCV_CALL, /* type */
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0, /* rightshift */
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2, /* size */
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64, /* bitsize */
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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_RISCV_CALL", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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ENCODE_UTYPE_IMM (-1U) | ((bfd_vma) ENCODE_ITYPE_IMM (-1U) << 32),
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/* dst_mask */
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TRUE), /* pcrel_offset */
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/* 32-bit PC-relative function call (AUIPC/JALR). */
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HOWTO (R_RISCV_CALL_PLT, /* type */
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0, /* rightshift */
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2, /* size */
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64, /* bitsize */
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TRUE, /* pc_relative */
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| 273 |
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_RISCV_CALL_PLT", /* name */
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FALSE, /* partial_inplace */
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| 278 |
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0, /* src_mask */
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| 279 |
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ENCODE_UTYPE_IMM (-1U) | ((bfd_vma) ENCODE_ITYPE_IMM (-1U) << 32),
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/* dst_mask */
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| 281 |
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TRUE), /* pcrel_offset */
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| 282 |
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| 283 |
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/* High 20 bits of 32-bit PC-relative GOT access. */
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HOWTO (R_RISCV_GOT_HI20, /* type */
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| 285 |
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0, /* rightshift */
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| 286 |
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2, /* size */
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| 287 |
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32, /* bitsize */
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| 288 |
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TRUE, /* pc_relative */
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| 289 |
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0, /* bitpos */
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| 290 |
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complain_overflow_dont, /* complain_on_overflow */
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| 291 |
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bfd_elf_generic_reloc, /* special_function */
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| 292 |
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"R_RISCV_GOT_HI20", /* name */
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| 293 |
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FALSE, /* partial_inplace */
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| 294 |
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0, /* src_mask */
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| 295 |
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ENCODE_UTYPE_IMM (-1U), /* dst_mask */
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| 296 |
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FALSE), /* pcrel_offset */
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| 297 |
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| 298 |
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/* High 20 bits of 32-bit PC-relative TLS IE GOT access. */
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HOWTO (R_RISCV_TLS_GOT_HI20, /* type */
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| 300 |
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0, /* rightshift */
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2, /* size */
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32, /* bitsize */
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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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| 306 |
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bfd_elf_generic_reloc, /* special_function */
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| 307 |
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"R_RISCV_TLS_GOT_HI20", /* name */
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FALSE, /* partial_inplace */
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| 309 |
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0, /* src_mask */
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| 310 |
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ENCODE_UTYPE_IMM (-1U), /* dst_mask */
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| 311 |
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FALSE), /* pcrel_offset */
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| 312 |
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/* High 20 bits of 32-bit PC-relative TLS GD GOT reference. */
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| 314 |
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HOWTO (R_RISCV_TLS_GD_HI20, /* type */
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| 315 |
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0, /* rightshift */
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2, /* size */
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| 317 |
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32, /* bitsize */
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| 318 |
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TRUE, /* pc_relative */
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| 319 |
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0, /* bitpos */
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| 320 |
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complain_overflow_dont, /* complain_on_overflow */
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| 321 |
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bfd_elf_generic_reloc, /* special_function */
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| 322 |
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"R_RISCV_TLS_GD_HI20", /* name */
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| 323 |
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FALSE, /* partial_inplace */
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| 324 |
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0, /* src_mask */
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| 325 |
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ENCODE_UTYPE_IMM (-1U), /* dst_mask */
|
| 326 |
|
|
FALSE), /* pcrel_offset */
|
| 327 |
|
|
|
| 328 |
|
|
/* High 20 bits of 32-bit PC-relative reference. */
|
| 329 |
|
|
HOWTO (R_RISCV_PCREL_HI20, /* type */
|
| 330 |
|
|
0, /* rightshift */
|
| 331 |
|
|
2, /* size */
|
| 332 |
|
|
32, /* bitsize */
|
| 333 |
|
|
TRUE, /* pc_relative */
|
| 334 |
|
|
0, /* bitpos */
|
| 335 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 336 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 337 |
|
|
"R_RISCV_PCREL_HI20", /* name */
|
| 338 |
|
|
FALSE, /* partial_inplace */
|
| 339 |
|
|
0, /* src_mask */
|
| 340 |
|
|
ENCODE_UTYPE_IMM (-1U), /* dst_mask */
|
| 341 |
|
|
TRUE), /* pcrel_offset */
|
| 342 |
|
|
|
| 343 |
|
|
/* Low 12 bits of a 32-bit PC-relative load or add. */
|
| 344 |
|
|
HOWTO (R_RISCV_PCREL_LO12_I, /* type */
|
| 345 |
|
|
0, /* rightshift */
|
| 346 |
|
|
2, /* size */
|
| 347 |
|
|
32, /* bitsize */
|
| 348 |
|
|
FALSE, /* pc_relative */
|
| 349 |
|
|
0, /* bitpos */
|
| 350 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 351 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 352 |
|
|
"R_RISCV_PCREL_LO12_I", /* name */
|
| 353 |
|
|
FALSE, /* partial_inplace */
|
| 354 |
|
|
0, /* src_mask */
|
| 355 |
|
|
ENCODE_ITYPE_IMM (-1U), /* dst_mask */
|
| 356 |
|
|
FALSE), /* pcrel_offset */
|
| 357 |
|
|
|
| 358 |
|
|
/* Low 12 bits of a 32-bit PC-relative store. */
|
| 359 |
|
|
HOWTO (R_RISCV_PCREL_LO12_S, /* type */
|
| 360 |
|
|
0, /* rightshift */
|
| 361 |
|
|
2, /* size */
|
| 362 |
|
|
32, /* bitsize */
|
| 363 |
|
|
FALSE, /* pc_relative */
|
| 364 |
|
|
0, /* bitpos */
|
| 365 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 366 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 367 |
|
|
"R_RISCV_PCREL_LO12_S", /* name */
|
| 368 |
|
|
FALSE, /* partial_inplace */
|
| 369 |
|
|
0, /* src_mask */
|
| 370 |
|
|
ENCODE_STYPE_IMM (-1U), /* dst_mask */
|
| 371 |
|
|
FALSE), /* pcrel_offset */
|
| 372 |
|
|
|
| 373 |
|
|
/* High 20 bits of 32-bit absolute address. */
|
| 374 |
|
|
HOWTO (R_RISCV_HI20, /* type */
|
| 375 |
|
|
0, /* rightshift */
|
| 376 |
|
|
2, /* size */
|
| 377 |
|
|
32, /* bitsize */
|
| 378 |
|
|
FALSE, /* pc_relative */
|
| 379 |
|
|
0, /* bitpos */
|
| 380 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 381 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 382 |
|
|
"R_RISCV_HI20", /* name */
|
| 383 |
|
|
FALSE, /* partial_inplace */
|
| 384 |
|
|
0, /* src_mask */
|
| 385 |
|
|
ENCODE_UTYPE_IMM (-1U), /* dst_mask */
|
| 386 |
|
|
FALSE), /* pcrel_offset */
|
| 387 |
|
|
|
| 388 |
|
|
/* High 12 bits of 32-bit load or add. */
|
| 389 |
|
|
HOWTO (R_RISCV_LO12_I, /* type */
|
| 390 |
|
|
0, /* rightshift */
|
| 391 |
|
|
2, /* size */
|
| 392 |
|
|
32, /* bitsize */
|
| 393 |
|
|
FALSE, /* pc_relative */
|
| 394 |
|
|
0, /* bitpos */
|
| 395 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 396 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 397 |
|
|
"R_RISCV_LO12_I", /* name */
|
| 398 |
|
|
FALSE, /* partial_inplace */
|
| 399 |
|
|
0, /* src_mask */
|
| 400 |
|
|
ENCODE_ITYPE_IMM (-1U), /* dst_mask */
|
| 401 |
|
|
FALSE), /* pcrel_offset */
|
| 402 |
|
|
|
| 403 |
|
|
/* High 12 bits of 32-bit store. */
|
| 404 |
|
|
HOWTO (R_RISCV_LO12_S, /* type */
|
| 405 |
|
|
0, /* rightshift */
|
| 406 |
|
|
2, /* size */
|
| 407 |
|
|
32, /* bitsize */
|
| 408 |
|
|
FALSE, /* pc_relative */
|
| 409 |
|
|
0, /* bitpos */
|
| 410 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 411 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 412 |
|
|
"R_RISCV_LO12_S", /* name */
|
| 413 |
|
|
FALSE, /* partial_inplace */
|
| 414 |
|
|
0, /* src_mask */
|
| 415 |
|
|
ENCODE_STYPE_IMM (-1U), /* dst_mask */
|
| 416 |
|
|
FALSE), /* pcrel_offset */
|
| 417 |
|
|
|
| 418 |
|
|
/* High 20 bits of TLS LE thread pointer offset. */
|
| 419 |
|
|
HOWTO (R_RISCV_TPREL_HI20, /* type */
|
| 420 |
|
|
0, /* rightshift */
|
| 421 |
|
|
2, /* size */
|
| 422 |
|
|
32, /* bitsize */
|
| 423 |
|
|
FALSE, /* pc_relative */
|
| 424 |
|
|
0, /* bitpos */
|
| 425 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 426 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 427 |
|
|
"R_RISCV_TPREL_HI20", /* name */
|
| 428 |
|
|
TRUE, /* partial_inplace */
|
| 429 |
|
|
0, /* src_mask */
|
| 430 |
|
|
ENCODE_UTYPE_IMM (-1U), /* dst_mask */
|
| 431 |
|
|
FALSE), /* pcrel_offset */
|
| 432 |
|
|
|
| 433 |
|
|
/* Low 12 bits of TLS LE thread pointer offset for loads and adds. */
|
| 434 |
|
|
HOWTO (R_RISCV_TPREL_LO12_I, /* type */
|
| 435 |
|
|
0, /* rightshift */
|
| 436 |
|
|
2, /* size */
|
| 437 |
|
|
32, /* bitsize */
|
| 438 |
|
|
FALSE, /* pc_relative */
|
| 439 |
|
|
0, /* bitpos */
|
| 440 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 441 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 442 |
|
|
"R_RISCV_TPREL_LO12_I", /* name */
|
| 443 |
|
|
FALSE, /* partial_inplace */
|
| 444 |
|
|
0, /* src_mask */
|
| 445 |
|
|
ENCODE_ITYPE_IMM (-1U), /* dst_mask */
|
| 446 |
|
|
FALSE), /* pcrel_offset */
|
| 447 |
|
|
|
| 448 |
|
|
/* Low 12 bits of TLS LE thread pointer offset for stores. */
|
| 449 |
|
|
HOWTO (R_RISCV_TPREL_LO12_S, /* type */
|
| 450 |
|
|
0, /* rightshift */
|
| 451 |
|
|
2, /* size */
|
| 452 |
|
|
32, /* bitsize */
|
| 453 |
|
|
FALSE, /* pc_relative */
|
| 454 |
|
|
0, /* bitpos */
|
| 455 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 456 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 457 |
|
|
"R_RISCV_TPREL_LO12_S", /* name */
|
| 458 |
|
|
FALSE, /* partial_inplace */
|
| 459 |
|
|
0, /* src_mask */
|
| 460 |
|
|
ENCODE_STYPE_IMM (-1U), /* dst_mask */
|
| 461 |
|
|
FALSE), /* pcrel_offset */
|
| 462 |
|
|
|
| 463 |
|
|
/* TLS LE thread pointer usage. */
|
| 464 |
|
|
HOWTO (R_RISCV_TPREL_ADD, /* type */
|
| 465 |
|
|
0, /* rightshift */
|
| 466 |
|
|
2, /* size */
|
| 467 |
|
|
32, /* bitsize */
|
| 468 |
|
|
FALSE, /* pc_relative */
|
| 469 |
|
|
0, /* bitpos */
|
| 470 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 471 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 472 |
|
|
"R_RISCV_TPREL_ADD", /* name */
|
| 473 |
|
|
TRUE, /* partial_inplace */
|
| 474 |
|
|
0, /* src_mask */
|
| 475 |
|
|
0, /* dst_mask */
|
| 476 |
|
|
FALSE), /* pcrel_offset */
|
| 477 |
|
|
|
| 478 |
|
|
/* 8-bit in-place addition, for local label subtraction. */
|
| 479 |
|
|
HOWTO (R_RISCV_ADD8, /* type */
|
| 480 |
|
|
0, /* rightshift */
|
| 481 |
|
|
0, /* size */
|
| 482 |
|
|
32, /* bitsize */
|
| 483 |
|
|
FALSE, /* pc_relative */
|
| 484 |
|
|
0, /* bitpos */
|
| 485 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 486 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 487 |
|
|
"R_RISCV_ADD8", /* name */
|
| 488 |
|
|
FALSE, /* partial_inplace */
|
| 489 |
|
|
0, /* src_mask */
|
| 490 |
|
|
MINUS_ONE, /* dst_mask */
|
| 491 |
|
|
FALSE), /* pcrel_offset */
|
| 492 |
|
|
|
| 493 |
|
|
/* 16-bit in-place addition, for local label subtraction. */
|
| 494 |
|
|
HOWTO (R_RISCV_ADD16, /* type */
|
| 495 |
|
|
0, /* rightshift */
|
| 496 |
|
|
1, /* size */
|
| 497 |
|
|
16, /* bitsize */
|
| 498 |
|
|
FALSE, /* pc_relative */
|
| 499 |
|
|
0, /* bitpos */
|
| 500 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 501 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 502 |
|
|
"R_RISCV_ADD16", /* name */
|
| 503 |
|
|
FALSE, /* partial_inplace */
|
| 504 |
|
|
0, /* src_mask */
|
| 505 |
|
|
MINUS_ONE, /* dst_mask */
|
| 506 |
|
|
FALSE), /* pcrel_offset */
|
| 507 |
|
|
|
| 508 |
|
|
/* 32-bit in-place addition, for local label subtraction. */
|
| 509 |
|
|
HOWTO (R_RISCV_ADD32, /* type */
|
| 510 |
|
|
0, /* rightshift */
|
| 511 |
|
|
2, /* size */
|
| 512 |
|
|
32, /* bitsize */
|
| 513 |
|
|
FALSE, /* pc_relative */
|
| 514 |
|
|
0, /* bitpos */
|
| 515 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 516 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 517 |
|
|
"R_RISCV_ADD32", /* name */
|
| 518 |
|
|
FALSE, /* partial_inplace */
|
| 519 |
|
|
0, /* src_mask */
|
| 520 |
|
|
MINUS_ONE, /* dst_mask */
|
| 521 |
|
|
FALSE), /* pcrel_offset */
|
| 522 |
|
|
|
| 523 |
|
|
/* 64-bit in-place addition, for local label subtraction. */
|
| 524 |
|
|
HOWTO (R_RISCV_ADD64, /* type */
|
| 525 |
|
|
0, /* rightshift */
|
| 526 |
|
|
4, /* size */
|
| 527 |
|
|
64, /* bitsize */
|
| 528 |
|
|
FALSE, /* pc_relative */
|
| 529 |
|
|
0, /* bitpos */
|
| 530 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 531 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 532 |
|
|
"R_RISCV_ADD64", /* name */
|
| 533 |
|
|
FALSE, /* partial_inplace */
|
| 534 |
|
|
0, /* src_mask */
|
| 535 |
|
|
MINUS_ONE, /* dst_mask */
|
| 536 |
|
|
FALSE), /* pcrel_offset */
|
| 537 |
|
|
|
| 538 |
|
|
/* 8-bit in-place addition, for local label subtraction. */
|
| 539 |
|
|
HOWTO (R_RISCV_SUB8, /* type */
|
| 540 |
|
|
0, /* rightshift */
|
| 541 |
|
|
0, /* size */
|
| 542 |
|
|
8, /* bitsize */
|
| 543 |
|
|
FALSE, /* pc_relative */
|
| 544 |
|
|
0, /* bitpos */
|
| 545 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 546 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 547 |
|
|
"R_RISCV_SUB8", /* name */
|
| 548 |
|
|
FALSE, /* partial_inplace */
|
| 549 |
|
|
0, /* src_mask */
|
| 550 |
|
|
MINUS_ONE, /* dst_mask */
|
| 551 |
|
|
FALSE), /* pcrel_offset */
|
| 552 |
|
|
|
| 553 |
|
|
/* 16-bit in-place addition, for local label subtraction. */
|
| 554 |
|
|
HOWTO (R_RISCV_SUB16, /* type */
|
| 555 |
|
|
0, /* rightshift */
|
| 556 |
|
|
1, /* size */
|
| 557 |
|
|
16, /* bitsize */
|
| 558 |
|
|
FALSE, /* pc_relative */
|
| 559 |
|
|
0, /* bitpos */
|
| 560 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 561 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 562 |
|
|
"R_RISCV_SUB16", /* name */
|
| 563 |
|
|
FALSE, /* partial_inplace */
|
| 564 |
|
|
0, /* src_mask */
|
| 565 |
|
|
MINUS_ONE, /* dst_mask */
|
| 566 |
|
|
FALSE), /* pcrel_offset */
|
| 567 |
|
|
|
| 568 |
|
|
/* 32-bit in-place addition, for local label subtraction. */
|
| 569 |
|
|
HOWTO (R_RISCV_SUB32, /* type */
|
| 570 |
|
|
0, /* rightshift */
|
| 571 |
|
|
2, /* size */
|
| 572 |
|
|
32, /* bitsize */
|
| 573 |
|
|
FALSE, /* pc_relative */
|
| 574 |
|
|
0, /* bitpos */
|
| 575 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 576 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 577 |
|
|
"R_RISCV_SUB32", /* name */
|
| 578 |
|
|
FALSE, /* partial_inplace */
|
| 579 |
|
|
0, /* src_mask */
|
| 580 |
|
|
MINUS_ONE, /* dst_mask */
|
| 581 |
|
|
FALSE), /* pcrel_offset */
|
| 582 |
|
|
|
| 583 |
|
|
/* 64-bit in-place addition, for local label subtraction. */
|
| 584 |
|
|
HOWTO (R_RISCV_SUB64, /* type */
|
| 585 |
|
|
0, /* rightshift */
|
| 586 |
|
|
4, /* size */
|
| 587 |
|
|
64, /* bitsize */
|
| 588 |
|
|
FALSE, /* pc_relative */
|
| 589 |
|
|
0, /* bitpos */
|
| 590 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 591 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 592 |
|
|
"R_RISCV_SUB64", /* name */
|
| 593 |
|
|
FALSE, /* partial_inplace */
|
| 594 |
|
|
0, /* src_mask */
|
| 595 |
|
|
MINUS_ONE, /* dst_mask */
|
| 596 |
|
|
FALSE), /* pcrel_offset */
|
| 597 |
|
|
|
| 598 |
|
|
/* GNU extension to record C++ vtable hierarchy */
|
| 599 |
|
|
HOWTO (R_RISCV_GNU_VTINHERIT, /* type */
|
| 600 |
|
|
0, /* rightshift */
|
| 601 |
|
|
4, /* size */
|
| 602 |
|
|
0, /* bitsize */
|
| 603 |
|
|
FALSE, /* pc_relative */
|
| 604 |
|
|
0, /* bitpos */
|
| 605 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 606 |
|
|
NULL, /* special_function */
|
| 607 |
|
|
"R_RISCV_GNU_VTINHERIT", /* name */
|
| 608 |
|
|
FALSE, /* partial_inplace */
|
| 609 |
|
|
0, /* src_mask */
|
| 610 |
|
|
0, /* dst_mask */
|
| 611 |
|
|
FALSE), /* pcrel_offset */
|
| 612 |
|
|
|
| 613 |
|
|
/* GNU extension to record C++ vtable member usage */
|
| 614 |
|
|
HOWTO (R_RISCV_GNU_VTENTRY, /* type */
|
| 615 |
|
|
0, /* rightshift */
|
| 616 |
|
|
4, /* size */
|
| 617 |
|
|
0, /* bitsize */
|
| 618 |
|
|
FALSE, /* pc_relative */
|
| 619 |
|
|
0, /* bitpos */
|
| 620 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 621 |
|
|
_bfd_elf_rel_vtable_reloc_fn, /* special_function */
|
| 622 |
|
|
"R_RISCV_GNU_VTENTRY", /* name */
|
| 623 |
|
|
FALSE, /* partial_inplace */
|
| 624 |
|
|
0, /* src_mask */
|
| 625 |
|
|
0, /* dst_mask */
|
| 626 |
|
|
FALSE), /* pcrel_offset */
|
| 627 |
|
|
|
| 628 |
|
|
/* Indicates an alignment statement. The addend field encodes how many
|
| 629 |
|
|
bytes of NOPs follow the statement. The desired alignment is the
|
| 630 |
|
|
addend rounded up to the next power of two. */
|
| 631 |
|
|
HOWTO (R_RISCV_ALIGN, /* type */
|
| 632 |
|
|
0, /* rightshift */
|
| 633 |
|
|
2, /* size */
|
| 634 |
|
|
0, /* bitsize */
|
| 635 |
|
|
FALSE, /* pc_relative */
|
| 636 |
|
|
0, /* bitpos */
|
| 637 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 638 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 639 |
|
|
"R_RISCV_ALIGN", /* name */
|
| 640 |
|
|
FALSE, /* partial_inplace */
|
| 641 |
|
|
0, /* src_mask */
|
| 642 |
|
|
0, /* dst_mask */
|
| 643 |
|
|
TRUE), /* pcrel_offset */
|
| 644 |
|
|
|
| 645 |
|
|
/* 8-bit PC-relative branch offset. */
|
| 646 |
|
|
HOWTO (R_RISCV_RVC_BRANCH, /* type */
|
| 647 |
|
|
0, /* rightshift */
|
| 648 |
|
|
2, /* size */
|
| 649 |
|
|
32, /* bitsize */
|
| 650 |
|
|
TRUE, /* pc_relative */
|
| 651 |
|
|
0, /* bitpos */
|
| 652 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 653 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 654 |
|
|
"R_RISCV_RVC_BRANCH", /* name */
|
| 655 |
|
|
FALSE, /* partial_inplace */
|
| 656 |
|
|
0, /* src_mask */
|
| 657 |
|
|
ENCODE_RVC_B_IMM (-1U), /* dst_mask */
|
| 658 |
|
|
TRUE), /* pcrel_offset */
|
| 659 |
|
|
|
| 660 |
|
|
/* 11-bit PC-relative jump offset. */
|
| 661 |
|
|
HOWTO (R_RISCV_RVC_JUMP, /* type */
|
| 662 |
|
|
0, /* rightshift */
|
| 663 |
|
|
2, /* size */
|
| 664 |
|
|
32, /* bitsize */
|
| 665 |
|
|
TRUE, /* pc_relative */
|
| 666 |
|
|
0, /* bitpos */
|
| 667 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 668 |
|
|
/* This needs complex overflow
|
| 669 |
|
|
detection, because the upper 36
|
| 670 |
|
|
bits must match the PC + 4. */
|
| 671 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 672 |
|
|
"R_RISCV_RVC_JUMP", /* name */
|
| 673 |
|
|
FALSE, /* partial_inplace */
|
| 674 |
|
|
0, /* src_mask */
|
| 675 |
|
|
ENCODE_RVC_J_IMM (-1U), /* dst_mask */
|
| 676 |
|
|
TRUE), /* pcrel_offset */
|
| 677 |
|
|
|
| 678 |
|
|
/* High 6 bits of 18-bit absolute address. */
|
| 679 |
|
|
HOWTO (R_RISCV_RVC_LUI, /* type */
|
| 680 |
|
|
0, /* rightshift */
|
| 681 |
|
|
2, /* size */
|
| 682 |
|
|
32, /* bitsize */
|
| 683 |
|
|
FALSE, /* pc_relative */
|
| 684 |
|
|
0, /* bitpos */
|
| 685 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 686 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 687 |
|
|
"R_RISCV_RVC_LUI", /* name */
|
| 688 |
|
|
FALSE, /* partial_inplace */
|
| 689 |
|
|
0, /* src_mask */
|
| 690 |
|
|
ENCODE_RVC_IMM (-1U), /* dst_mask */
|
| 691 |
|
|
FALSE), /* pcrel_offset */
|
| 692 |
|
|
|
| 693 |
|
|
/* High 12 bits of 32-bit load or add. */
|
| 694 |
|
|
HOWTO (R_RISCV_GPREL_I, /* type */
|
| 695 |
|
|
0, /* rightshift */
|
| 696 |
|
|
2, /* size */
|
| 697 |
|
|
32, /* bitsize */
|
| 698 |
|
|
FALSE, /* pc_relative */
|
| 699 |
|
|
0, /* bitpos */
|
| 700 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 701 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 702 |
|
|
"R_RISCV_GPREL_I", /* name */
|
| 703 |
|
|
FALSE, /* partial_inplace */
|
| 704 |
|
|
0, /* src_mask */
|
| 705 |
|
|
ENCODE_ITYPE_IMM (-1U), /* dst_mask */
|
| 706 |
|
|
FALSE), /* pcrel_offset */
|
| 707 |
|
|
|
| 708 |
|
|
/* High 12 bits of 32-bit store. */
|
| 709 |
|
|
HOWTO (R_RISCV_GPREL_S, /* type */
|
| 710 |
|
|
0, /* rightshift */
|
| 711 |
|
|
2, /* size */
|
| 712 |
|
|
32, /* bitsize */
|
| 713 |
|
|
FALSE, /* pc_relative */
|
| 714 |
|
|
0, /* bitpos */
|
| 715 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 716 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 717 |
|
|
"R_RISCV_GPREL_S", /* name */
|
| 718 |
|
|
FALSE, /* partial_inplace */
|
| 719 |
|
|
0, /* src_mask */
|
| 720 |
|
|
ENCODE_STYPE_IMM (-1U), /* dst_mask */
|
| 721 |
|
|
FALSE), /* pcrel_offset */
|
| 722 |
|
|
};
|
| 723 |
|
|
|
| 724 |
|
|
/* A mapping from BFD reloc types to RISC-V ELF reloc types. */
|
| 725 |
|
|
|
| 726 |
|
|
struct elf_reloc_map {
|
| 727 |
|
|
bfd_reloc_code_real_type bfd_val;
|
| 728 |
|
|
enum elf_riscv_reloc_type elf_val;
|
| 729 |
|
|
};
|
| 730 |
|
|
|
| 731 |
|
|
static const struct elf_reloc_map riscv_reloc_map[] =
|
| 732 |
|
|
{
|
| 733 |
|
|
{ BFD_RELOC_NONE, R_RISCV_NONE },
|
| 734 |
|
|
{ BFD_RELOC_32, R_RISCV_32 },
|
| 735 |
|
|
{ BFD_RELOC_64, R_RISCV_64 },
|
| 736 |
|
|
{ BFD_RELOC_RISCV_ADD8, R_RISCV_ADD8 },
|
| 737 |
|
|
{ BFD_RELOC_RISCV_ADD16, R_RISCV_ADD16 },
|
| 738 |
|
|
{ BFD_RELOC_RISCV_ADD32, R_RISCV_ADD32 },
|
| 739 |
|
|
{ BFD_RELOC_RISCV_ADD64, R_RISCV_ADD64 },
|
| 740 |
|
|
{ BFD_RELOC_RISCV_SUB8, R_RISCV_SUB8 },
|
| 741 |
|
|
{ BFD_RELOC_RISCV_SUB16, R_RISCV_SUB16 },
|
| 742 |
|
|
{ BFD_RELOC_RISCV_SUB32, R_RISCV_SUB32 },
|
| 743 |
|
|
{ BFD_RELOC_RISCV_SUB64, R_RISCV_SUB64 },
|
| 744 |
|
|
{ BFD_RELOC_CTOR, R_RISCV_64 },
|
| 745 |
|
|
{ BFD_RELOC_12_PCREL, R_RISCV_BRANCH },
|
| 746 |
|
|
{ BFD_RELOC_RISCV_HI20, R_RISCV_HI20 },
|
| 747 |
|
|
{ BFD_RELOC_RISCV_LO12_I, R_RISCV_LO12_I },
|
| 748 |
|
|
{ BFD_RELOC_RISCV_LO12_S, R_RISCV_LO12_S },
|
| 749 |
|
|
{ BFD_RELOC_RISCV_PCREL_LO12_I, R_RISCV_PCREL_LO12_I },
|
| 750 |
|
|
{ BFD_RELOC_RISCV_PCREL_LO12_S, R_RISCV_PCREL_LO12_S },
|
| 751 |
|
|
{ BFD_RELOC_RISCV_CALL, R_RISCV_CALL },
|
| 752 |
|
|
{ BFD_RELOC_RISCV_CALL_PLT, R_RISCV_CALL_PLT },
|
| 753 |
|
|
{ BFD_RELOC_RISCV_PCREL_HI20, R_RISCV_PCREL_HI20 },
|
| 754 |
|
|
{ BFD_RELOC_RISCV_JMP, R_RISCV_JAL },
|
| 755 |
|
|
{ BFD_RELOC_RISCV_GOT_HI20, R_RISCV_GOT_HI20 },
|
| 756 |
|
|
{ BFD_RELOC_RISCV_TLS_DTPMOD32, R_RISCV_TLS_DTPMOD32 },
|
| 757 |
|
|
{ BFD_RELOC_RISCV_TLS_DTPREL32, R_RISCV_TLS_DTPREL32 },
|
| 758 |
|
|
{ BFD_RELOC_RISCV_TLS_DTPMOD64, R_RISCV_TLS_DTPMOD64 },
|
| 759 |
|
|
{ BFD_RELOC_RISCV_TLS_DTPREL64, R_RISCV_TLS_DTPREL64 },
|
| 760 |
|
|
{ BFD_RELOC_RISCV_TLS_TPREL32, R_RISCV_TLS_TPREL32 },
|
| 761 |
|
|
{ BFD_RELOC_RISCV_TLS_TPREL64, R_RISCV_TLS_TPREL64 },
|
| 762 |
|
|
{ BFD_RELOC_RISCV_TPREL_HI20, R_RISCV_TPREL_HI20 },
|
| 763 |
|
|
{ BFD_RELOC_RISCV_TPREL_ADD, R_RISCV_TPREL_ADD },
|
| 764 |
|
|
{ BFD_RELOC_RISCV_TPREL_LO12_S, R_RISCV_TPREL_LO12_S },
|
| 765 |
|
|
{ BFD_RELOC_RISCV_TPREL_LO12_I, R_RISCV_TPREL_LO12_I },
|
| 766 |
|
|
{ BFD_RELOC_RISCV_TLS_GOT_HI20, R_RISCV_TLS_GOT_HI20 },
|
| 767 |
|
|
{ BFD_RELOC_RISCV_TLS_GD_HI20, R_RISCV_TLS_GD_HI20 },
|
| 768 |
|
|
{ BFD_RELOC_RISCV_ALIGN, R_RISCV_ALIGN },
|
| 769 |
|
|
{ BFD_RELOC_RISCV_RVC_BRANCH, R_RISCV_RVC_BRANCH },
|
| 770 |
|
|
{ BFD_RELOC_RISCV_RVC_JUMP, R_RISCV_RVC_JUMP },
|
| 771 |
|
|
{ BFD_RELOC_RISCV_RVC_LUI, R_RISCV_RVC_LUI },
|
| 772 |
|
|
{ BFD_RELOC_RISCV_GPREL_I, R_RISCV_GPREL_I },
|
| 773 |
|
|
{ BFD_RELOC_RISCV_GPREL_S, R_RISCV_GPREL_S },
|
| 774 |
|
|
};
|
| 775 |
|
|
|
| 776 |
|
|
/* Given a BFD reloc type, return a howto structure. */
|
| 777 |
|
|
|
| 778 |
|
|
reloc_howto_type *
|
| 779 |
|
|
riscv_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
| 780 |
|
|
bfd_reloc_code_real_type code)
|
| 781 |
|
|
{
|
| 782 |
|
|
unsigned int i;
|
| 783 |
|
|
|
| 784 |
|
|
for (i = 0; i < ARRAY_SIZE (riscv_reloc_map); i++)
|
| 785 |
|
|
if (riscv_reloc_map[i].bfd_val == code)
|
| 786 |
|
|
return &howto_table[(int) riscv_reloc_map[i].elf_val];
|
| 787 |
|
|
|
| 788 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 789 |
|
|
return NULL;
|
| 790 |
|
|
}
|
| 791 |
|
|
|
| 792 |
|
|
reloc_howto_type *
|
| 793 |
|
|
riscv_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
|
| 794 |
|
|
{
|
| 795 |
|
|
unsigned int i;
|
| 796 |
|
|
|
| 797 |
|
|
for (i = 0; i < ARRAY_SIZE (howto_table); i++)
|
| 798 |
|
|
if (howto_table[i].name && strcasecmp (howto_table[i].name, r_name) == 0)
|
| 799 |
|
|
return &howto_table[i];
|
| 800 |
|
|
|
| 801 |
|
|
return NULL;
|
| 802 |
|
|
}
|
| 803 |
|
|
|
| 804 |
|
|
reloc_howto_type *
|
| 805 |
|
|
riscv_elf_rtype_to_howto (unsigned int r_type)
|
| 806 |
|
|
{
|
| 807 |
|
|
if (r_type >= ARRAY_SIZE (howto_table))
|
| 808 |
|
|
{
|
| 809 |
|
|
(*_bfd_error_handler) (_("unrecognized relocation (0x%x)"), r_type);
|
| 810 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 811 |
|
|
return NULL;
|
| 812 |
|
|
}
|
| 813 |
|
|
return &howto_table[r_type];
|
| 814 |
|
|
}
|
