/* RISC-V ELF support for BFD.

   Copyright (C) 2011-2023 Free Software Foundation, Inc.

   Contributed by Andrew Waterman (andrew@sifive.com).

   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)

/* 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 */