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 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 static bfd_reloc_status_type
  76 howto8_FFnn_callback (abfd, reloc_entry, symbol_in, data,
  77                       ignore_input_section, ignore_bfd)
  78      bfd *abfd;
  79      arelent *reloc_entry;
  80      struct symbol_cache_entry *symbol_in;
  81      PTR data;
  82      asection *ignore_input_section;
  83      bfd *ignore_bfd;
  84 {
  85   long relocation = 0;
  86   bfd_vma addr = reloc_entry->address;
  87
  88   long x = bfd_get_8 (abfd, (bfd_byte *)data + addr);
  89   abort ();
  90   HOWTO_PREPARE(relocation, symbol_in);
  91
  92   x = (x + relocation + reloc_entry->addend);
  93
  94   bfd_put_8 (abfd, x, (bfd_byte *)data + addr);
  95   return bfd_reloc_ok;
  96 }
  97
  98 static bfd_reloc_status_type
  99 howto8_pcrel_callback (abfd, reloc_entry, symbol_in, data,
 100                        ignore_input_section, ignore_bfd)
 101      bfd *abfd;
 102      arelent *reloc_entry;
 103      struct symbol_cache_entry *symbol_in;
 104      PTR data;
 105      asection *ignore_input_section;
 106      bfd *ignore_bfd;
 107 {
 108   long relocation = 0;
 109   bfd_vma addr = reloc_entry->address;
 110   long x = bfd_get_8 (abfd, (bfd_byte *)data + addr);
 111   abort ();
 112   HOWTO_PREPARE(relocation, symbol_in);
 113
 114   x = (x + relocation + reloc_entry->addend);
 115
 116   bfd_put_8 (abfd, x, (bfd_byte *)data + addr);
 117   return bfd_reloc_ok;
 118 }
 119
 120 static reloc_howto_type howto_16
 121   = NEWHOWTO(howto16_callback,"abs16",1,false,false);
 122 static reloc_howto_type howto_8
 123   = NEWHOWTO(howto8_callback,"abs8",0,false,false);
 124
 125 static reloc_howto_type howto_8_FFnn
 126   = NEWHOWTO(howto8_FFnn_callback,"ff00+abs8",0,false,false);
 127
 128 static reloc_howto_type howto_8_pcrel
 129   = NEWHOWTO(howto8_pcrel_callback,"pcrel8",0,false,true);
 130
 131 static reloc_howto_type *
 132 local_bfd_reloc_type_lookup (arch, code)
 133      const struct bfd_arch_info *arch;
 134      bfd_reloc_code_real_type code;
 135 {
 136   switch (code) {
 137   case BFD_RELOC_16:
 138     return &howto_16;
 139   case BFD_RELOC_8_FFnn:
 140     return &howto_8_FFnn;
 141   case BFD_RELOC_8:
 142     return &howto_8;
 143   case BFD_RELOC_8_PCREL:
 144     return &howto_8_pcrel;
 145   }
 146   return (reloc_howto_type *)NULL;
 147 }
 148 #endif
 149
 150 int bfd_default_scan_num_mach();
 151
 152 static boolean
 153 scan_mach (info, string)
 154      const struct bfd_arch_info *info ATTRIBUTE_UNUSED;
 155      const char *string;
 156 {
 157   if (strcmp(string,"h8/500") == 0) return true;
 158   if (strcmp(string,"H8/500") == 0) return true;
 159   if (strcmp(string,"h8500") == 0) return true;
 160   if (strcmp(string,"H8500") == 0) return true;
 161   return false;
 162 }
 163
 164 #if 0 /* not used currently */
 165 /* This routine is provided two arch_infos and returns whether
 166    they'd be compatible */
 167
 168 static const bfd_arch_info_type *
 169 compatible (a,b)
 170      const bfd_arch_info_type *a;
 171      const bfd_arch_info_type *b;
 172 {
 173   if (a->arch != b->arch || a->mach != b->mach)
 174    return NULL;
 175   return a;
 176 }
 177 #endif
 178
 179 const bfd_arch_info_type bfd_h8500_arch =
 180 {
 181   16,                           /* 16 bits in a word */
 182   24,                           /* 24 bits in an address */
 183   8,                            /* 8 bits in a byte */
 184   bfd_arch_h8500,
 185   0,                            /* only 1 machine */
 186   "h8500",                      /* arch_name  */
 187   "h8500",                      /* printable name */
 188   1,
 189   true,                         /* the default machine */
 190   bfd_default_compatible,
 191   scan_mach,
 192   0,
 193 };