bfd/cpu-h8500.c

   1 /* BFD library support routines for the H8/500 architecture.
   2    Copyright 1993, 1995, 2000, 2001, 2002 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 bfd_boolean scan_mach
  26   PARAMS ((const struct bfd_arch_info *, const char *));
  27
  28 #if 0
  29 /*
  30 Relocations for the Z8K
  31
  32 */
  33 static bfd_reloc_status_type
  34 howto16_callback (abfd, reloc_entry, symbol_in, data,
  35                   ignore_input_section, ignore_bfd)
  36      bfd *abfd;
  37      arelent *reloc_entry;
  38      struct symbol_cache_entry *symbol_in;
  39      PTR data;
  40      asection *ignore_input_section;
  41      bfd *ignore_bfd;
  42 {
  43   long relocation = 0;
  44   bfd_vma addr = reloc_entry->address;
  45   long x = bfd_get_16 (abfd, (bfd_byte *)data + addr);
  46
  47   HOWTO_PREPARE(relocation, symbol_in);
  48
  49   x = (x + relocation + reloc_entry->addend);
  50
  51   bfd_put_16 (abfd, x, (bfd_byte *)data + addr);
  52   return bfd_reloc_ok;
  53 }
  54
  55 static bfd_reloc_status_type
  56 howto8_callback (abfd, reloc_entry, symbol_in, data,
  57                  ignore_input_section, ignore_bfd)
  58      bfd *abfd;
  59      arelent *reloc_entry;
  60      struct symbol_cache_entry *symbol_in;
  61      PTR data;
  62      asection *ignore_input_section;
  63      bfd *ignore_bfd;
  64 {
  65   long relocation = 0;
  66   bfd_vma addr = reloc_entry->address;
  67   long x = bfd_get_8 (abfd, (bfd_byte *)data + addr);
  68
  69   HOWTO_PREPARE(relocation, symbol_in);
  70
  71   x = (x + relocation + reloc_entry->addend);
  72
  73   bfd_put_8 (abfd, x, (bfd_byte *)data + addr);
  74   return bfd_reloc_ok;
  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 static reloc_howto_type howto_16
 123   = NEWHOWTO (howto16_callback, "abs16", 1, FALSE, FALSE);
 124 static reloc_howto_type howto_8
 125   = NEWHOWTO (howto8_callback, "abs8", 0, FALSE, FALSE);
 126
 127 static reloc_howto_type howto_8_FFnn
 128   = NEWHOWTO (howto8_FFnn_callback, "ff00+abs8", 0, FALSE, FALSE);
 129
 130 static reloc_howto_type howto_8_pcrel
 131   = NEWHOWTO (howto8_pcrel_callback, "pcrel8", 0, FALSE, TRUE);
 132
 133 static reloc_howto_type *
 134 local_bfd_reloc_type_lookup (arch, code)
 135      const struct bfd_arch_info *arch;
 136      bfd_reloc_code_real_type code;
 137 {
 138   switch (code) {
 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   }
 148   return (reloc_howto_type *)NULL;
 149 }
 150 #endif
 151
 152 static bfd_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)
 158     return TRUE;
 159   if (strcmp (string,"H8/500") == 0)
 160     return TRUE;
 161   if (strcmp (string,"h8500") == 0)
 162     return TRUE;
 163   if (strcmp (string,"H8500") == 0)
 164     return TRUE;
 165   return FALSE;
 166 }
 167
 168 #if 0 /* not used currently */
 169 /* This routine is provided two arch_infos and returns whether
 170    they'd be compatible */
 171
 172 static const bfd_arch_info_type *
 173 compatible (a,b)
 174      const bfd_arch_info_type *a;
 175      const bfd_arch_info_type *b;
 176 {
 177   if (a->arch != b->arch || a->mach != b->mach)
 178    return NULL;
 179   return a;
 180 }
 181 #endif
 182
 183 const bfd_arch_info_type bfd_h8500_arch =
 184 {
 185   16,                           /* 16 bits in a word */
 186   24,                           /* 24 bits in an address */
 187   8,                            /* 8 bits in a byte */
 188   bfd_arch_h8500,
 189   0,                            /* only 1 machine */
 190   "h8500",                      /* arch_name  */
 191   "h8500",                      /* printable name */
 192   1,
 193   TRUE,                         /* the default machine */
 194   bfd_default_compatible,
 195   scan_mach,
 196   0,
 197 };