bfd/cpu-h8500.c

   1 /* BFD library support routines for the H8/500 architecture.
   2    Copyright 1993, 1995, 2000, 2001 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 static boolean scan_mach PARAMS ((const struct bfd_arch_info *, const char *));
  26
  27 #if 0
  28 /*
  29 Relocations for the Z8K
  30
  31 */
  32 static bfd_reloc_status_type
  33 howto16_callback (abfd, reloc_entry, symbol_in, data,
  34                   ignore_input_section, ignore_bfd)
  35      bfd *abfd;
  36      arelent *reloc_entry;
  37      struct symbol_cache_entry *symbol_in;
  38      PTR data;
  39      asection *ignore_input_section;
  40      bfd *ignore_bfd;
  41 {
  42   long relocation = 0;
  43   bfd_vma addr = reloc_entry->address;
  44   long x = bfd_get_16 (abfd, (bfd_byte *)data + addr);
  45
  46   HOWTO_PREPARE(relocation, symbol_in);
  47
  48   x = (x + relocation + reloc_entry->addend);
  49
  50   bfd_put_16 (abfd, x, (bfd_byte *)data + addr);
  51   return bfd_reloc_ok;
  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 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   case BFD_RELOC_16:
 139     return &howto_16;
 140   case BFD_RELOC_8_FFnn:
 141     return &howto_8_FFnn;
 142   case BFD_RELOC_8:
 143     return &howto_8;
 144   case BFD_RELOC_8_PCREL:
 145     return &howto_8_pcrel;
 146   }
 147   return (reloc_howto_type *)NULL;
 148 }
 149 #endif
 150
 151 static boolean
 152 scan_mach (info, string)
 153      const struct bfd_arch_info *info ATTRIBUTE_UNUSED;
 154      const char *string;
 155 {
 156   if (strcmp(string,"h8/500") == 0) return true;
 157   if (strcmp(string,"H8/500") == 0) return true;
 158   if (strcmp(string,"h8500") == 0) return true;
 159   if (strcmp(string,"H8500") == 0) return true;
 160   return false;
 161 }
 162
 163 #if 0 /* not used currently */
 164 /* This routine is provided two arch_infos and returns whether
 165    they'd be compatible */
 166
 167 static const bfd_arch_info_type *
 168 compatible (a,b)
 169      const bfd_arch_info_type *a;
 170      const bfd_arch_info_type *b;
 171 {
 172   if (a->arch != b->arch || a->mach != b->mach)
 173    return NULL;
 174   return a;
 175 }
 176 #endif
 177
 178 const bfd_arch_info_type bfd_h8500_arch =
 179 {
 180   16,                           /* 16 bits in a word */
 181   24,                           /* 24 bits in an address */
 182   8,                            /* 8 bits in a byte */
 183   bfd_arch_h8500,
 184   0,                            /* only 1 machine */
 185   "h8500",                      /* arch_name  */
 186   "h8500",                      /* printable name */
 187   1,
 188   true,                         /* the default machine */
 189   bfd_default_compatible,
 190   scan_mach,
 191   0,
 192 };