/* RISC-V ELF support for BFD.
  Copyright (C) 2011-2024 Free Software Foundation, Inc.

  Contributed by Andrew Waterman ([email protected]).
  Based on MIPS ELF support for BFD, by Ian Lance Taylor.

  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/>.  */

/* This file holds definitions specific to the RISCV ELF ABI.  Note
  that most of this is not actually implemented by BFD.  */

#ifndef _ELF_RISCV_H
#define _ELF_RISCV_H

#include "elf/reloc-macros.h"
#include "libiberty.h"

/* Relocation types.  */
START_RELOC_NUMBERS (elf_riscv_reloc_type)
 /* Relocation types used by the dynamic linker.  */
 RELOC_NUMBER (R_RISCV_NONE, 0)
 RELOC_NUMBER (R_RISCV_32, 1)
 RELOC_NUMBER (R_RISCV_64, 2)
 RELOC_NUMBER (R_RISCV_RELATIVE, 3)
 RELOC_NUMBER (R_RISCV_COPY, 4)
 RELOC_NUMBER (R_RISCV_JUMP_SLOT, 5)
 RELOC_NUMBER (R_RISCV_TLS_DTPMOD32, 6)
 RELOC_NUMBER (R_RISCV_TLS_DTPMOD64, 7)
 RELOC_NUMBER (R_RISCV_TLS_DTPREL32, 8)
 RELOC_NUMBER (R_RISCV_TLS_DTPREL64, 9)
 RELOC_NUMBER (R_RISCV_TLS_TPREL32, 10)
 RELOC_NUMBER (R_RISCV_TLS_TPREL64, 11)

 /* Relocation types not used by the dynamic linker.  */
 RELOC_NUMBER (R_RISCV_BRANCH, 16)
 RELOC_NUMBER (R_RISCV_JAL, 17)
 RELOC_NUMBER (R_RISCV_CALL, 18)
 RELOC_NUMBER (R_RISCV_CALL_PLT, 19)
 RELOC_NUMBER (R_RISCV_GOT_HI20, 20)
 RELOC_NUMBER (R_RISCV_TLS_GOT_HI20, 21)
 RELOC_NUMBER (R_RISCV_TLS_GD_HI20, 22)
 RELOC_NUMBER (R_RISCV_PCREL_HI20, 23)
 RELOC_NUMBER (R_RISCV_PCREL_LO12_I, 24)
 RELOC_NUMBER (R_RISCV_PCREL_LO12_S, 25)
 RELOC_NUMBER (R_RISCV_HI20, 26)
 RELOC_NUMBER (R_RISCV_LO12_I, 27)
 RELOC_NUMBER (R_RISCV_LO12_S, 28)
 RELOC_NUMBER (R_RISCV_TPREL_HI20, 29)
 RELOC_NUMBER (R_RISCV_TPREL_LO12_I, 30)
 RELOC_NUMBER (R_RISCV_TPREL_LO12_S, 31)
 RELOC_NUMBER (R_RISCV_TPREL_ADD, 32)
 RELOC_NUMBER (R_RISCV_ADD8, 33)
 RELOC_NUMBER (R_RISCV_ADD16, 34)
 RELOC_NUMBER (R_RISCV_ADD32, 35)
 RELOC_NUMBER (R_RISCV_ADD64, 36)
 RELOC_NUMBER (R_RISCV_SUB8, 37)
 RELOC_NUMBER (R_RISCV_SUB16, 38)
 RELOC_NUMBER (R_RISCV_SUB32, 39)
 RELOC_NUMBER (R_RISCV_SUB64, 40)
 RELOC_NUMBER (R_RISCV_ALIGN, 43)
 RELOC_NUMBER (R_RISCV_RVC_BRANCH, 44)
 RELOC_NUMBER (R_RISCV_RVC_JUMP, 45)
 RELOC_NUMBER (R_RISCV_RVC_LUI, 46)
 RELOC_NUMBER (R_RISCV_GPREL_I, 47)
 RELOC_NUMBER (R_RISCV_GPREL_S, 48)
 RELOC_NUMBER (R_RISCV_TPREL_I, 49)
 RELOC_NUMBER (R_RISCV_TPREL_S, 50)
 RELOC_NUMBER (R_RISCV_RELAX, 51)
 RELOC_NUMBER (R_RISCV_SUB6, 52)
 RELOC_NUMBER (R_RISCV_SET6, 53)
 RELOC_NUMBER (R_RISCV_SET8, 54)
 RELOC_NUMBER (R_RISCV_SET16, 55)
 RELOC_NUMBER (R_RISCV_SET32, 56)
 RELOC_NUMBER (R_RISCV_32_PCREL, 57)
 RELOC_NUMBER (R_RISCV_IRELATIVE, 58)
 /* Reserved 59 for R_RISCV_PLT32.  */
 RELOC_NUMBER (R_RISCV_SET_ULEB128, 60)
 RELOC_NUMBER (R_RISCV_SUB_ULEB128, 61)
END_RELOC_NUMBERS (R_RISCV_max)

/* Internal relocations used exclusively by the relaxation pass.  */
#define R_RISCV_DELETE  (R_RISCV_max)
#define R_RISCV_RVC_LUI (R_RISCV_max + 1)
#define R_RISCV_GPREL_I (R_RISCV_max + 2)
#define R_RISCV_GPREL_S (R_RISCV_max + 3)
#define R_RISCV_TPREL_I (R_RISCV_max + 4)
#define R_RISCV_TPREL_S (R_RISCV_max + 5)

/* Processor specific flags for the ELF header e_flags field.  */

/* File may contain compressed instructions.  */
#define EF_RISCV_RVC 0x0001

/* Which floating-point ABI a file uses.  */
#define EF_RISCV_FLOAT_ABI 0x0006

/* File uses the soft-float ABI.  */
#define EF_RISCV_FLOAT_ABI_SOFT 0x0000

/* File uses the single-float ABI.  */
#define EF_RISCV_FLOAT_ABI_SINGLE 0x0002

/* File uses the double-float ABI.  */
#define EF_RISCV_FLOAT_ABI_DOUBLE 0x0004

/* File uses the quad-float ABI.  */
#define EF_RISCV_FLOAT_ABI_QUAD 0x0006

/* File uses the 32E base integer instruction.  */
#define EF_RISCV_RVE 0x0008

/* The name of the global pointer symbol.  */
#define RISCV_GP_SYMBOL "__global_pointer$"

/* Processor specific dynamic array tags.  */
#define DT_RISCV_VARIANT_CC (DT_LOPROC + 1)

/* RISC-V specific values for st_other.  */
#define STO_RISCV_VARIANT_CC 0x80

/* File uses the TSO model. */
#define EF_RISCV_TSO 0x0010

/* Additional section types.  */
#define SHT_RISCV_ATTRIBUTES 0x70000003 /* Section holds attributes.  */

/* Processor specific program header types.  */

/* Location of RISC-V ELF attribute section. */
#define PT_RISCV_ATTRIBUTES 0x70000003

/* Object attributes.  */
enum
{
 /* 0-3 are generic.  */
 Tag_RISCV_stack_align = 4,
 Tag_RISCV_arch = 5,
 Tag_RISCV_unaligned_access = 6,
 Tag_RISCV_priv_spec = 8,
 Tag_RISCV_priv_spec_minor = 10,
 Tag_RISCV_priv_spec_revision = 12
};

#endif /* _ELF_RISCV_H */

You are viewing proxied material from ftp.icm.edu.pl. The copyright of proxied material belongs to its original authors. Any comments or complaints in relation to proxied material should be directed to the original authors of the content concerned. Please see the disclaimer for more details.