| 1 | /* BFD library support routines for the Renesas H8/300 architecture. |
| 2 | Copyright (C) 1990-2020 Free Software Foundation, Inc. |
| 3 | Hacked by Steve Chamberlain of Cygnus Support. |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 20 | MA 02110-1301, USA. */ |
| 21 | |
| 22 | #include "sysdep.h" |
| 23 | #include "bfd.h" |
| 24 | #include "libbfd.h" |
| 25 | #include "cpu-h8300.h" |
| 26 | |
| 27 | static bfd_boolean |
| 28 | h8300_scan (const struct bfd_arch_info *info, const char *string) |
| 29 | { |
| 30 | if (*string != 'h' && *string != 'H') |
| 31 | return FALSE; |
| 32 | |
| 33 | string++; |
| 34 | if (*string != '8') |
| 35 | return FALSE; |
| 36 | |
| 37 | string++; |
| 38 | if (*string == '/') |
| 39 | string++; |
| 40 | |
| 41 | if (*string != '3') |
| 42 | return FALSE; |
| 43 | string++; |
| 44 | if (*string != '0') |
| 45 | return FALSE; |
| 46 | string++; |
| 47 | if (*string != '0') |
| 48 | return FALSE; |
| 49 | string++; |
| 50 | if (*string == '-') |
| 51 | string++; |
| 52 | |
| 53 | /* In ELF linker scripts, we typically express the architecture/machine |
| 54 | as architecture:machine. |
| 55 | |
| 56 | So if we've matched so far and encounter a colon, try to match the |
| 57 | string following the colon. */ |
| 58 | if (*string == ':') |
| 59 | { |
| 60 | string++; |
| 61 | return h8300_scan (info, string); |
| 62 | } |
| 63 | |
| 64 | if (*string == 'h' || *string == 'H') |
| 65 | { |
| 66 | string++; |
| 67 | if (*string == 'n' || *string == 'N') |
| 68 | return (info->mach == bfd_mach_h8300hn); |
| 69 | |
| 70 | return (info->mach == bfd_mach_h8300h); |
| 71 | } |
| 72 | else if (*string == 's' || *string == 'S') |
| 73 | { |
| 74 | string++; |
| 75 | if (*string == 'n' || *string == 'N') |
| 76 | return (info->mach == bfd_mach_h8300sn); |
| 77 | |
| 78 | if (*string == 'x' || *string == 'X') |
| 79 | { |
| 80 | string++; |
| 81 | if (*string == 'n' || *string == 'N') |
| 82 | return (info->mach == bfd_mach_h8300sxn); |
| 83 | |
| 84 | return (info->mach == bfd_mach_h8300sx); |
| 85 | } |
| 86 | |
| 87 | return (info->mach == bfd_mach_h8300s); |
| 88 | } |
| 89 | else |
| 90 | return info->mach == bfd_mach_h8300; |
| 91 | } |
| 92 | |
| 93 | /* This routine is provided two arch_infos and works out the machine |
| 94 | which would be compatible with both and returns a pointer to its |
| 95 | info structure. */ |
| 96 | |
| 97 | static const bfd_arch_info_type * |
| 98 | compatible (const bfd_arch_info_type *in, const bfd_arch_info_type *out) |
| 99 | { |
| 100 | if (in->arch != out->arch) |
| 101 | return 0; |
| 102 | if (in->mach == bfd_mach_h8300sx && out->mach == bfd_mach_h8300s) |
| 103 | return in; |
| 104 | if (in->mach == bfd_mach_h8300s && out->mach == bfd_mach_h8300sx) |
| 105 | return out; |
| 106 | if (in->mach == bfd_mach_h8300sxn && out->mach == bfd_mach_h8300sn) |
| 107 | return in; |
| 108 | if (in->mach == bfd_mach_h8300sn && out->mach == bfd_mach_h8300sxn) |
| 109 | return out; |
| 110 | /* It's really not a good idea to mix and match modes. */ |
| 111 | if (in->mach != out->mach) |
| 112 | return 0; |
| 113 | else |
| 114 | return in; |
| 115 | } |
| 116 | |
| 117 | #define N(word, addr, number, name, print, default, next) \ |
| 118 | { word, addr, 8, bfd_arch_h8300, number, name, print, 1, default, \ |
| 119 | compatible, h8300_scan, bfd_arch_default_fill, next, 0 } |
| 120 | |
| 121 | static const bfd_arch_info_type h8300sxn_info_struct = |
| 122 | N (32, 16, bfd_mach_h8300sxn, "h8300sxn", "h8300sxn", FALSE, NULL); |
| 123 | |
| 124 | static const bfd_arch_info_type h8300sx_info_struct = |
| 125 | N (32, 32, bfd_mach_h8300sx, "h8300sx", "h8300sx", FALSE, &h8300sxn_info_struct); |
| 126 | |
| 127 | static const bfd_arch_info_type h8300sn_info_struct = |
| 128 | N (32, 16, bfd_mach_h8300sn, "h8300sn", "h8300sn", FALSE, &h8300sx_info_struct); |
| 129 | |
| 130 | static const bfd_arch_info_type h8300hn_info_struct = |
| 131 | N (32, 16, bfd_mach_h8300hn, "h8300hn", "h8300hn", FALSE, &h8300sn_info_struct); |
| 132 | |
| 133 | static const bfd_arch_info_type h8300s_info_struct = |
| 134 | N (32, 32, bfd_mach_h8300s, "h8300s", "h8300s", FALSE, & h8300hn_info_struct); |
| 135 | |
| 136 | static const bfd_arch_info_type h8300h_info_struct = |
| 137 | N (32, 32, bfd_mach_h8300h, "h8300h", "h8300h", FALSE, &h8300s_info_struct); |
| 138 | |
| 139 | const bfd_arch_info_type bfd_h8300_arch = |
| 140 | N (16, 16, bfd_mach_h8300, "h8300", "h8300", TRUE, &h8300h_info_struct); |
| 141 | |
| 142 | /* Pad the given address to 32 bits, converting 16-bit and 24-bit |
| 143 | addresses into the values they would have had on a h8s target. */ |
| 144 | |
| 145 | bfd_vma |
| 146 | bfd_h8300_pad_address (bfd *abfd, bfd_vma address) |
| 147 | { |
| 148 | /* Cope with bfd_vma's larger than 32 bits. */ |
| 149 | address &= 0xffffffffu; |
| 150 | |
| 151 | switch (bfd_get_mach (abfd)) |
| 152 | { |
| 153 | case bfd_mach_h8300: |
| 154 | case bfd_mach_h8300hn: |
| 155 | case bfd_mach_h8300sn: |
| 156 | case bfd_mach_h8300sxn: |
| 157 | /* Sign extend a 16-bit address. */ |
| 158 | if (address >= 0x8000) |
| 159 | return address | 0xffff0000u; |
| 160 | return address; |
| 161 | |
| 162 | case bfd_mach_h8300h: |
| 163 | /* Sign extend a 24-bit address. */ |
| 164 | if (address >= 0x800000) |
| 165 | return address | 0xff000000u; |
| 166 | return address; |
| 167 | |
| 168 | case bfd_mach_h8300s: |
| 169 | case bfd_mach_h8300sx: |
| 170 | return address; |
| 171 | |
| 172 | default: |
| 173 | abort (); |
| 174 | } |
| 175 | } |