bfd/elfxx-riscv.h

   1 /* RISC-V ELF specific backend routines.
   2    Copyright (C) 2011-2024 Free Software Foundation, Inc.
   3
   4    Contributed by Andrew Waterman (andrew@sifive.com).
   5    Based on MIPS target.
   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 #include "elf/common.h"
  24 #include "elf/internal.h"
  25 #include "opcode/riscv.h"
  26 #include "cpu-riscv.h"
  27
  28 #define RISCV_UNKNOWN_VERSION -1
  29
  30 struct riscv_elf_params
  31 {
  32   /* Whether to relax code sequences to GP-relative addressing.  */
  33   bool relax_gp;
  34   /* Whether to check if SUB_ULEB128 relocation has non-zero addend.  */
  35   bool check_uleb128;
  36 };
  37
  38 extern void riscv_elf32_set_options (struct bfd_link_info *,
  39                                      struct riscv_elf_params *);
  40 extern void riscv_elf64_set_options (struct bfd_link_info *,
  41                                      struct riscv_elf_params *);
  42
  43 extern reloc_howto_type *
  44 riscv_reloc_name_lookup (bfd *, const char *);
  45
  46 extern reloc_howto_type *
  47 riscv_reloc_type_lookup (bfd *, bfd_reloc_code_real_type);
  48
  49 extern reloc_howto_type *
  50 riscv_elf_rtype_to_howto (bfd *, unsigned int r_type);
  51
  52 /* The information of architecture attribute.  */
  53 struct riscv_subset_t
  54 {
  55   const char *name;
  56   int major_version;
  57   int minor_version;
  58   struct riscv_subset_t *next;
  59 };
  60
  61 typedef struct riscv_subset_t riscv_subset_t;
  62
  63 typedef struct
  64 {
  65   riscv_subset_t *head;
  66   riscv_subset_t *tail;
  67   const char *arch_str;
  68 } riscv_subset_list_t;
  69
  70 extern void
  71 riscv_release_subset_list (riscv_subset_list_t *);
  72
  73 extern void
  74 riscv_add_subset (riscv_subset_list_t *,
  75                   const char *,
  76                   int, int);
  77
  78 extern bool
  79 riscv_lookup_subset (const riscv_subset_list_t *,
  80                      const char *,
  81                      riscv_subset_t **);
  82
  83 typedef struct
  84 {
  85   riscv_subset_list_t *subset_list;
  86   void (*error_handler) (const char *,
  87                          ...) ATTRIBUTE_PRINTF_1;
  88   unsigned *xlen;
  89   enum riscv_spec_class *isa_spec;
  90   bool check_unknown_prefixed_ext;
  91 } riscv_parse_subset_t;
  92
  93 extern bool
  94 riscv_parse_subset (riscv_parse_subset_t *,
  95                     const char *);
  96
  97 extern void
  98 riscv_release_subset_list (riscv_subset_list_t *);
  99
 100 extern char *
 101 riscv_arch_str (unsigned, const riscv_subset_list_t *);
 102
 103 extern size_t
 104 riscv_estimate_digit (unsigned);
 105
 106 extern int
 107 riscv_compare_subsets (const char *, const char *);
 108
 109 extern riscv_subset_list_t *
 110 riscv_copy_subset_list (riscv_subset_list_t *);
 111
 112 extern bool
 113 riscv_update_subset (riscv_parse_subset_t *, const char *);
 114
 115 extern bool
 116 riscv_subset_supports (riscv_parse_subset_t *, const char *);
 117
 118 extern bool
 119 riscv_multi_subset_supports (riscv_parse_subset_t *, enum riscv_insn_class);
 120
 121 extern const char *
 122 riscv_multi_subset_supports_ext (riscv_parse_subset_t *, enum riscv_insn_class);
 123
 124 extern void
 125 bfd_elf32_riscv_set_data_segment_info (struct bfd_link_info *, int *);
 126 extern void
 127 bfd_elf64_riscv_set_data_segment_info (struct bfd_link_info *, int *);