1/* BFD backend for RISC-V
2   Copyright (C) 2011-2017 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 "sysdep.h"
24#include "bfd.h"
25#include "libbfd.h"
26
27/* This routine is provided two arch_infos and returns an arch_info
28   that is compatible with both, or NULL if none exists.  */
29
30static const bfd_arch_info_type *
31riscv_compatible (const bfd_arch_info_type *a, const bfd_arch_info_type *b)
32{
33  if (a->arch != b->arch)
34    return NULL;
35
36  /* Machine compatibility is checked in
37     _bfd_riscv_elf_merge_private_bfd_data.  */
38
39  return a;
40}
41
42#define N(BITS_WORD, BITS_ADDR, NUMBER, PRINT, DEFAULT, NEXT)	\
43  {								\
44    BITS_WORD, /*  bits in a word */				\
45    BITS_ADDR, /* bits in an address */				\
46    8,	/* 8 bits in a byte */					\
47    bfd_arch_riscv,						\
48    NUMBER,							\
49    "riscv",							\
50    PRINT,							\
51    3,								\
52    DEFAULT,							\
53    riscv_compatible,						\
54    bfd_default_scan,						\
55    bfd_arch_default_fill,					\
56    NEXT,							\
57  }
58
59/* This enum must be kept in the same order as arch_info_struct.  */
60enum
61{
62  I_riscv64,
63  I_riscv32
64};
65
66#define NN(index) (&arch_info_struct[(index) + 1])
67
68/* This array must be kept in the same order as the anonymous enum above,
69   and each entry except the last should end with NN (my enum value).  */
70static const bfd_arch_info_type arch_info_struct[] =
71{
72  N (64, 64, bfd_mach_riscv64, "riscv:rv64", FALSE, NN (I_riscv64)),
73  N (32, 32, bfd_mach_riscv32, "riscv:rv32", FALSE, 0)
74};
75
76/* The default architecture is riscv:rv64.  */
77
78const bfd_arch_info_type bfd_riscv_arch =
79  N (64, 64, 0, "riscv", TRUE, &arch_info_struct[0]);
80