1/* RISC-V ELF specific backend routines.
2   Copyright (C) 2011-2022 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
30extern reloc_howto_type *
31riscv_reloc_name_lookup (bfd *, const char *);
32
33extern reloc_howto_type *
34riscv_reloc_type_lookup (bfd *, bfd_reloc_code_real_type);
35
36extern reloc_howto_type *
37riscv_elf_rtype_to_howto (bfd *, unsigned int r_type);
38
39/* The information of architecture attribute.  */
40struct riscv_subset_t
41{
42  const char *name;
43  int major_version;
44  int minor_version;
45  struct riscv_subset_t *next;
46};
47
48typedef struct riscv_subset_t riscv_subset_t;
49
50typedef struct
51{
52  riscv_subset_t *head;
53  riscv_subset_t *tail;
54  const char *arch_str;
55} riscv_subset_list_t;
56
57extern void
58riscv_release_subset_list (riscv_subset_list_t *);
59
60extern void
61riscv_add_subset (riscv_subset_list_t *,
62		  const char *,
63		  int, int);
64
65extern bool
66riscv_lookup_subset (const riscv_subset_list_t *,
67		     const char *,
68		     riscv_subset_t **);
69
70typedef struct
71{
72  riscv_subset_list_t *subset_list;
73  void (*error_handler) (const char *,
74			 ...) ATTRIBUTE_PRINTF_1;
75  unsigned *xlen;
76  enum riscv_spec_class *isa_spec;
77  bool check_unknown_prefixed_ext;
78} riscv_parse_subset_t;
79
80extern bool
81riscv_parse_subset (riscv_parse_subset_t *,
82		    const char *);
83
84extern void
85riscv_release_subset_list (riscv_subset_list_t *);
86
87extern char *
88riscv_arch_str (unsigned, const riscv_subset_list_t *);
89
90extern size_t
91riscv_estimate_digit (unsigned);
92
93extern int
94riscv_compare_subsets (const char *, const char *);
95
96extern riscv_subset_list_t *
97riscv_copy_subset_list (riscv_subset_list_t *);
98
99extern bool
100riscv_update_subset (riscv_parse_subset_t *, const char *);
101
102extern bool
103riscv_subset_supports (riscv_parse_subset_t *, const char *);
104
105extern bool
106riscv_multi_subset_supports (riscv_parse_subset_t *, enum riscv_insn_class);
107
108extern const char *
109riscv_multi_subset_supports_ext (riscv_parse_subset_t *, enum riscv_insn_class);
110
111extern void
112bfd_elf32_riscv_set_data_segment_info (struct bfd_link_info *, int *);
113extern void
114bfd_elf64_riscv_set_data_segment_info (struct bfd_link_info *, int *);
115