bfd/cpu-h8500.c

   1 /* BFD library support routines for the H8/500 architecture.
   2    Copyright 1993, 1995, 2000, 2001, 2002, 2003
   3    Free Software Foundation, Inc.
   4    Hacked by Steve Chamberlain of Cygnus Support.
   5
   6 This file is part of BFD, the Binary File Descriptor library.
   7
   8 This program is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2 of the License, or
  11 (at your option) any later version.
  12
  13 This program is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with this program; if not, write to the Free Software
  20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  21
  22 #include "bfd.h"
  23 #include "sysdep.h"
  24 #include "libbfd.h"
  25
  26 static bfd_boolean scan_mach
  27   PARAMS ((const struct bfd_arch_info *, const char *));
  28
  29 #if 0
  30 /*
  31 Relocations for the Z8K
  32
  33 */
  34 static bfd_reloc_status_type
  35 howto16_callback (abfd, reloc_entry, symbol_in, data,
  36                   ignore_input_section, ignore_bfd)
  37      bfd *abfd;
  38      arelent *reloc_entry;
  39      struct bfd_symbol *symbol_in;
  40      PTR data;
  41      asection *ignore_input_section;
  42      bfd *ignore_bfd;
  43 {
  44   long relocation = 0;
  45   bfd_vma addr = reloc_entry->address;
  46   long x = bfd_get_16 (abfd, (bfd_byte *)data + addr);
  47
  48   HOWTO_PREPARE(relocation, symbol_in);
  49
  50   x = (x + relocation + reloc_entry->addend);
  51
  52   bfd_put_16 (abfd, x, (bfd_byte *)data + addr);
  53   return bfd_reloc_ok;
  54 }
  55
  56 static bfd_reloc_status_type
  57 howto8_callback (abfd, reloc_entry, symbol_in, data,
  58                  ignore_input_section, ignore_bfd)
  59      bfd *abfd;
  60      arelent *reloc_entry;
  61      struct bfd_symbol *symbol_in;
  62      PTR data;
  63      asection *ignore_input_section;
  64      bfd *ignore_bfd;
  65 {
  66   long relocation = 0;
  67   bfd_vma addr = reloc_entry->address;
  68   long x = bfd_get_8 (abfd, (bfd_byte *)data + addr);
  69
  70   HOWTO_PREPARE(relocation, symbol_in);
  71
  72   x = (x + relocation + reloc_entry->addend);
  73
  74   bfd_put_8 (abfd, x, (bfd_byte *)data + addr);
  75   return bfd_reloc_ok;
  76 }
  77
  78 static bfd_reloc_status_type
  79 howto8_FFnn_callback (abfd, reloc_entry, symbol_in, data,
  80                       ignore_input_section, ignore_bfd)
  81      bfd *abfd;
  82      arelent *reloc_entry;
  83      struct bfd_symbol *symbol_in;
  84      PTR data;
  85      asection *ignore_input_section;
  86      bfd *ignore_bfd;
  87 {
  88   long relocation = 0;
  89   bfd_vma addr = reloc_entry->address;
  90
  91   long x = bfd_get_8 (abfd, (bfd_byte *)data + addr);
  92   abort ();
  93   HOWTO_PREPARE(relocation, symbol_in);
  94
  95   x = (x + relocation + reloc_entry->addend);
  96
  97   bfd_put_8 (abfd, x, (bfd_byte *)data + addr);
  98   return bfd_reloc_ok;
  99 }
 100
 101 static bfd_reloc_status_type
 102 howto8_pcrel_callback (abfd, reloc_entry, symbol_in, data,
 103                        ignore_input_section, ignore_bfd)
 104      bfd *abfd;
 105      arelent *reloc_entry;
 106      struct bfd_symbol *symbol_in;
 107      PTR data;
 108      asection *ignore_input_section;
 109      bfd *ignore_bfd;
 110 {
 111   long relocation = 0;
 112   bfd_vma addr = reloc_entry->address;
 113   long x = bfd_get_8 (abfd, (bfd_byte *)data + addr);
 114   abort ();
 115   HOWTO_PREPARE(relocation, symbol_in);
 116
 117   x = (x + relocation + reloc_entry->addend);
 118
 119   bfd_put_8 (abfd, x, (bfd_byte *)data + addr);
 120   return bfd_reloc_ok;
 121 }
 122
 123 static reloc_howto_type howto_16
 124   = NEWHOWTO (howto16_callback, "abs16", 1, FALSE, FALSE);
 125 static reloc_howto_type howto_8
 126   = NEWHOWTO (howto8_callback, "abs8", 0, FALSE, FALSE);
 127
 128 static reloc_howto_type howto_8_FFnn
 129   = NEWHOWTO (howto8_FFnn_callback, "ff00+abs8", 0, FALSE, FALSE);
 130
 131 static reloc_howto_type howto_8_pcrel
 132   = NEWHOWTO (howto8_pcrel_callback, "pcrel8", 0, FALSE, TRUE);
 133
 134 static reloc_howto_type *
 135 local_bfd_reloc_type_lookup (arch, code)
 136      const struct bfd_arch_info *arch;
 137      bfd_reloc_code_real_type code;
 138 {
 139   switch (code) {
 140   case BFD_RELOC_16:
 141     return &howto_16;
 142   case BFD_RELOC_8_FFnn:
 143     return &howto_8_FFnn;
 144   case BFD_RELOC_8:
 145     return &howto_8;
 146   case BFD_RELOC_8_PCREL:
 147     return &howto_8_pcrel;
 148   }
 149   return (reloc_howto_type *)NULL;
 150 }
 151 #endif
 152
 153 static bfd_boolean
 154 scan_mach (info, string)
 155      const struct bfd_arch_info *info ATTRIBUTE_UNUSED;
 156      const char *string;
 157 {
 158   if (strcmp (string,"h8/500") == 0)
 159     return TRUE;
 160   if (strcmp (string,"H8/500") == 0)
 161     return TRUE;
 162   if (strcmp (string,"h8500") == 0)
 163     return TRUE;
 164   if (strcmp (string,"H8500") == 0)
 165     return TRUE;
 166   return FALSE;
 167 }
 168
 169 #if 0 /* not used currently */
 170 /* This routine is provided two arch_infos and returns whether
 171    they'd be compatible */
 172
 173 static const bfd_arch_info_type *
 174 compatible (a,b)
 175      const bfd_arch_info_type *a;
 176      const bfd_arch_info_type *b;
 177 {
 178   if (a->arch != b->arch || a->mach != b->mach)
 179    return NULL;
 180   return a;
 181 }
 182 #endif
 183
 184 const bfd_arch_info_type bfd_h8500_arch =
 185 {
 186   16,                           /* 16 bits in a word */
 187   24,                           /* 24 bits in an address */
 188   8,                            /* 8 bits in a byte */
 189   bfd_arch_h8500,
 190   0,                            /* only 1 machine */
 191   "h8500",                      /* arch_name  */
 192   "h8500",                      /* printable name */
 193   1,
 194   TRUE,                         /* the default machine */
 195   bfd_default_compatible,
 196   scan_mach,
 197   0,
 198 };