bfd/cpu-h8500.c

   1 /* BFD library support routines for the H8/500 architecture.
   2    Copyright (C) 1993, 1994, 1995, 1999 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #include "bfd.h"
  22 #include "sysdep.h"
  23 #include "libbfd.h"
  24
  25 #if 0
  26
  27 /*
  28 Relocations for the Z8K
  29
  30 */
  31 static bfd_reloc_status_type
  32 howto16_callback (abfd, reloc_entry, symbol_in, data,
  33                   ignore_input_section, ignore_bfd)
  34      bfd *abfd;
  35      arelent *reloc_entry;
  36      struct symbol_cache_entry *symbol_in;
  37      PTR data;
  38      asection *ignore_input_section;
  39      bfd *ignore_bfd;
  40 {
  41   long relocation = 0;
  42   bfd_vma addr = reloc_entry->address;
  43   long x = bfd_get_16(abfd, (bfd_byte *)data + addr);
  44
  45   HOWTO_PREPARE(relocation, symbol_in);
  46
  47   x = (x + relocation + reloc_entry->addend);
  48
  49   bfd_put_16(abfd, x, (bfd_byte *)data + addr);
  50   return bfd_reloc_ok;
  51 }
  52
  53
  54 static bfd_reloc_status_type
  55 howto8_callback (abfd, reloc_entry, symbol_in, data,
  56                  ignore_input_section, ignore_bfd)
  57      bfd *abfd;
  58      arelent *reloc_entry;
  59      struct symbol_cache_entry *symbol_in;
  60      PTR data;
  61      asection *ignore_input_section;
  62      bfd *ignore_bfd;
  63 {
  64   long relocation = 0;
  65   bfd_vma addr = reloc_entry->address;
  66   long x = bfd_get_8(abfd, (bfd_byte *)data + addr);
  67
  68   HOWTO_PREPARE(relocation, symbol_in);
  69
  70   x = (x + relocation + reloc_entry->addend);
  71
  72   bfd_put_8(abfd, x, (bfd_byte *)data + addr);
  73   return bfd_reloc_ok;
  74 }
  75
  76
  77 static bfd_reloc_status_type
  78 howto8_FFnn_callback (abfd, reloc_entry, symbol_in, data,
  79                       ignore_input_section, ignore_bfd)
  80      bfd *abfd;
  81      arelent *reloc_entry;
  82      struct symbol_cache_entry *symbol_in;
  83      PTR data;
  84      asection *ignore_input_section;
  85      bfd *ignore_bfd;
  86 {
  87   long relocation = 0;
  88   bfd_vma addr = reloc_entry->address;
  89
  90   long x = bfd_get_8(abfd, (bfd_byte *)data + addr);
  91   abort();
  92   HOWTO_PREPARE(relocation, symbol_in);
  93
  94   x = (x + relocation + reloc_entry->addend);
  95
  96   bfd_put_8(abfd, x, (bfd_byte *)data + addr);
  97   return bfd_reloc_ok;
  98 }
  99
 100 static bfd_reloc_status_type
 101 howto8_pcrel_callback (abfd, reloc_entry, symbol_in, data,
 102                        ignore_input_section, ignore_bfd)
 103      bfd *abfd;
 104      arelent *reloc_entry;
 105      struct symbol_cache_entry *symbol_in;
 106      PTR data;
 107      asection *ignore_input_section;
 108      bfd *ignore_bfd;
 109 {
 110   long relocation = 0;
 111   bfd_vma addr = reloc_entry->address;
 112   long x = bfd_get_8(abfd, (bfd_byte *)data + addr);
 113   abort();
 114   HOWTO_PREPARE(relocation, symbol_in);
 115
 116   x = (x + relocation + reloc_entry->addend);
 117
 118   bfd_put_8(abfd, x, (bfd_byte *)data + addr);
 119   return bfd_reloc_ok;
 120 }
 121
 122
 123
 124 static reloc_howto_type howto_16
 125   = NEWHOWTO(howto16_callback,"abs16",1,false,false);
 126 static reloc_howto_type howto_8
 127   = NEWHOWTO(howto8_callback,"abs8",0,false,false);
 128
 129 static reloc_howto_type howto_8_FFnn
 130   = NEWHOWTO(howto8_FFnn_callback,"ff00+abs8",0,false,false);
 131
 132 static reloc_howto_type howto_8_pcrel
 133   = NEWHOWTO(howto8_pcrel_callback,"pcrel8",0,false,true);
 134
 135
 136 static reloc_howto_type *
 137 local_bfd_reloc_type_lookup (arch, code)
 138      const struct bfd_arch_info *arch;
 139      bfd_reloc_code_real_type code;
 140 {
 141   switch (code) {
 142   case BFD_RELOC_16:
 143     return &howto_16;
 144   case BFD_RELOC_8_FFnn:
 145     return &howto_8_FFnn;
 146   case BFD_RELOC_8:
 147     return &howto_8;
 148   case BFD_RELOC_8_PCREL:
 149     return &howto_8_pcrel;
 150   }
 151   return (reloc_howto_type *)NULL;
 152 }
 153 #endif
 154
 155 int bfd_default_scan_num_mach();
 156
 157 static boolean
 158 scan_mach (info, string)
 159      const struct bfd_arch_info *info ATTRIBUTE_UNUSED;
 160      const char *string;
 161 {
 162   if (strcmp(string,"h8/500") == 0) return true;
 163   if (strcmp(string,"H8/500") == 0) return true;
 164   if (strcmp(string,"h8500") == 0) return true;
 165   if (strcmp(string,"H8500") == 0) return true;
 166   return false;
 167 }
 168
 169
 170 #if 0 /* not used currently */
 171 /* This routine is provided two arch_infos and returns whether
 172    they'd be compatible */
 173
 174 static const bfd_arch_info_type *
 175 compatible (a,b)
 176      const bfd_arch_info_type *a;
 177      const bfd_arch_info_type *b;
 178 {
 179   if (a->arch != b->arch || a->mach != b->mach)
 180    return NULL;
 181   return a;
 182 }
 183 #endif
 184
 185 const bfd_arch_info_type bfd_h8500_arch =
 186 {
 187   16,                           /* 16 bits in a word */
 188   24,                           /* 24 bits in an address */
 189   8,                            /* 8 bits in a byte */
 190   bfd_arch_h8500,
 191   0,                            /* only 1 machine */
 192   "h8500",                      /* arch_name  */
 193   "h8500",                      /* printable name */
 194   1,
 195   true,                         /* the default machine */
 196   bfd_default_compatible,
 197   scan_mach,
 198   0,
 199 };