bfd/cpu-h8300.c

   1 /* BFD library support routines for the Hitachi H8/300 architecture.
   2    Copyright (C) 1990, 91, 92, 93, 94 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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 #include "bfd.h"
  22 #include "sysdep.h"
  23 #include "libbfd.h"
  24
  25 #if 0 /* not used currently */
  26 /*
  27 Relocations for the H8
  28
  29 */
  30 static bfd_reloc_status_type
  31 howto16_callback (abfd, reloc_entry, symbol_in, data,
  32                   ignore_input_section, ignore_bfd)
  33      bfd * abfd;
  34      arelent * reloc_entry;
  35      struct symbol_cache_entry *symbol_in;
  36      PTR data;
  37      asection * ignore_input_section;
  38      bfd * ignore_bfd;
  39 {
  40   long relocation = 0;
  41   bfd_vma addr = reloc_entry->address;
  42   long x = bfd_get_16 (abfd, (bfd_byte *) data + addr);
  43
  44   HOWTO_PREPARE (relocation, symbol_in);
  45
  46   x = (x + relocation + reloc_entry->addend);
  47
  48   bfd_put_16 (abfd, x, (bfd_byte *) data + addr);
  49   return bfd_reloc_ok;
  50 }
  51
  52
  53 static bfd_reloc_status_type
  54 howto8_callback (abfd, reloc_entry, symbol_in, data,
  55                  ignore_input_section, ignore_bfd)
  56      bfd * abfd;
  57      arelent * reloc_entry;
  58      struct symbol_cache_entry *symbol_in;
  59      PTR data;
  60      asection * ignore_input_section;
  61      bfd * ignore_bfd;
  62 {
  63   long relocation = 0;
  64   bfd_vma addr = reloc_entry->address;
  65   long x = bfd_get_8 (abfd, (bfd_byte *) data + addr);
  66
  67   HOWTO_PREPARE (relocation, symbol_in);
  68
  69   x = (x + relocation + reloc_entry->addend);
  70
  71   bfd_put_8 (abfd, x, (bfd_byte *) data + addr);
  72   return bfd_reloc_ok;
  73 }
  74
  75
  76 static bfd_reloc_status_type
  77 howto8_FFnn_callback (abfd, reloc_entry, symbol_in, data,
  78                       ignore_input_section, ignore_bfd)
  79      bfd * abfd;
  80      arelent * reloc_entry;
  81      struct symbol_cache_entry *symbol_in;
  82      PTR data;
  83      asection * ignore_input_section;
  84      bfd * ignore_bfd;
  85 {
  86   long relocation = 0;
  87   bfd_vma addr = reloc_entry->address;
  88
  89   long x = bfd_get_8 (abfd, (bfd_byte *) data + addr);
  90   abort ();
  91   HOWTO_PREPARE (relocation, symbol_in);
  92
  93   x = (x + relocation + reloc_entry->addend);
  94
  95   bfd_put_8 (abfd, x, (bfd_byte *) data + addr);
  96   return bfd_reloc_ok;
  97 }
  98
  99 static bfd_reloc_status_type
 100 howto8_pcrel_callback (abfd, reloc_entry, symbol_in, data,
 101                        ignore_input_section, ignore_bfd)
 102      bfd * abfd;
 103      arelent * reloc_entry;
 104      struct symbol_cache_entry *symbol_in;
 105      PTR data;
 106      asection * ignore_input_section;
 107      bfd * ignore_bfd;
 108 {
 109   long relocation = 0;
 110   bfd_vma addr = reloc_entry->address;
 111   long x = bfd_get_8 (abfd, (bfd_byte *) data + addr);
 112   abort ();
 113   HOWTO_PREPARE (relocation, symbol_in);
 114
 115   x = (x + relocation + reloc_entry->addend);
 116
 117   bfd_put_8 (abfd, x, (bfd_byte *) data + addr);
 118   return bfd_reloc_ok;
 119 }
 120
 121 static reloc_howto_type howto_16
 122 = NEWHOWTO (howto16_callback, "abs16", 1, false, false);
 123 static reloc_howto_type howto_8
 124 = NEWHOWTO (howto8_callback, "abs8", 0, false, false);
 125
 126 static reloc_howto_type howto_8_FFnn
 127 = NEWHOWTO (howto8_FFnn_callback, "ff00+abs8", 0, false, false);
 128
 129 static reloc_howto_type howto_8_pcrel
 130 = NEWHOWTO (howto8_pcrel_callback, "pcrel8", 0, false, true);
 131
 132 static reloc_howto_type *
 133 local_bfd_reloc_type_lookup (arch, code)
 134      CONST struct bfd_arch_info *arch;
 135      bfd_reloc_code_real_type code;
 136 {
 137     switch (code)
 138       {
 139       case BFD_RELOC_16:
 140         return &howto_16;
 141       case BFD_RELOC_8_FFnn:
 142         return &howto_8_FFnn;
 143       case BFD_RELOC_8:
 144         return &howto_8;
 145       case BFD_RELOC_8_PCREL:
 146         return &howto_8_pcrel;
 147       default:
 148         return (reloc_howto_type *) NULL;
 149       }
 150   }
 151 #endif
 152
 153 int bfd_default_scan_num_mach ();
 154
 155 static boolean
 156 h8300_scan (info, string)
 157      CONST struct bfd_arch_info *info;
 158      CONST char *string;
 159 {
 160   if (*string != 'h' && *string != 'H')
 161     return false;
 162
 163   string++;
 164   if (*string != '8')
 165     return false;
 166
 167   string++;
 168   if (*string == '/')
 169     string++;
 170
 171   if (*string != '3')
 172     return false;
 173   string++;
 174   if (*string != '0')
 175     return false;
 176   string++;
 177   if (*string != '0')
 178     return false;
 179   string++;
 180   if (*string == '-')
 181     string++;
 182   if (*string == 'h' || *string == 'H')
 183     {
 184       return (info->mach == bfd_mach_h8300h);
 185     }
 186   else
 187     {
 188       return info->mach == bfd_mach_h8300;
 189     }
 190 }
 191
 192
 193 /* This routine is provided two arch_infos and works out the
 194    machine which would be compatible with both and returns a pointer
 195    to its info structure */
 196
 197 static CONST bfd_arch_info_type *
 198 compatible (in, out)
 199      CONST bfd_arch_info_type * in;
 200      CONST bfd_arch_info_type * out;
 201 {
 202   /* If the output is non-H and the input is -H, that's bad */
 203   if (in->mach == bfd_mach_h8300h &&
 204       out->mach == bfd_mach_h8300)
 205     return 0;
 206
 207   /* If either is an -H, the answer is -H */
 208   if (in->mach == bfd_mach_h8300h)
 209     return in;
 210   return out;
 211 }
 212
 213 static bfd_arch_info_type h8300_info_struct =
 214 {
 215   16,                           /* 16 bits in a word */
 216   16,                           /* 16 bits in an address */
 217   8,                            /* 8 bits in a byte */
 218   bfd_arch_h8300,
 219   bfd_mach_h8300,
 220   "H8/300",                     /* arch_name  */
 221   "H8/300",                     /* printable name */
 222   1,
 223   true,                         /* the default machine */
 224   compatible,
 225   h8300_scan,
 226   0,
 227 /*    local_bfd_reloc_type_lookup, */
 228   0,
 229 };
 230
 231
 232 static bfd_arch_info_type h8300h_info_struct =
 233 {
 234   32,                           /* 32 bits in a word */
 235   32,                           /* 32 bits in an address */
 236   8,                            /* 8 bits in a byte */
 237   bfd_arch_h8300,
 238   bfd_mach_h8300h,
 239   "H8/300H",                    /* arch_name  */
 240   "H8/300H",                    /* printable name */
 241   1,
 242   false,                        /* the default machine */
 243   compatible,
 244   h8300_scan,
 245   0,
 246 /*    local_bfd_reloc_type_lookup, */
 247   0,
 248 };
 249
 250 void
 251 bfd_h8300_arch()
 252 {
 253   bfd_arch_linkin (&h8300_info_struct);
 254   bfd_arch_linkin (&h8300h_info_struct);
 255 }