bfd/cpu-z8k.c

   1 /* BFD library support routines for the Z800n architecture.
   2    Copyright (C) 1992 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
  26 #if 0                           /* not used currently */
  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     {
 143     case BFD_RELOC_16:
 144       return &howto_16;
 145     case BFD_RELOC_8_FFnn:
 146       return &howto_8_FFnn;
 147     case BFD_RELOC_8:
 148       return &howto_8;
 149     case BFD_RELOC_8_PCREL:
 150       return &howto_8_pcrel;
 151     default:
 152       return (reloc_howto_type *) NULL;
 153     }
 154 }
 155 #endif
 156
 157 int bfd_default_scan_num_mach ();
 158
 159 static boolean
 160 scan_mach (info, string)
 161      const struct bfd_arch_info *info;
 162      const char *string;
 163 {
 164   if (strcmp (string, "z8001") == 0 || strcmp (string, "z8k") == 0)
 165     {
 166       return bfd_mach_z8001 == info->mach;
 167     }
 168   if (strcmp (string, "z8002") == 0)
 169     {
 170       return bfd_mach_z8002 == info->mach;
 171     }
 172   return false;
 173 }
 174
 175
 176 /* This routine is provided two arch_infos and returns whether
 177    they'd be compatible */
 178
 179 static const bfd_arch_info_type *
 180 compatible (a, b)
 181      const bfd_arch_info_type *a;
 182      const bfd_arch_info_type *b;
 183 {
 184   if (a->arch != b->arch || a->mach != b->mach)
 185     return NULL;
 186   return a;
 187 }
 188
 189
 190 static const bfd_arch_info_type arch_info_struct[] =
 191 {
 192   {32, 32, 8, bfd_arch_z8k, bfd_mach_z8001, "z8k", "z8001", 1, false, compatible, scan_mach, 0,},
 193 };
 194
 195 const bfd_arch_info_type bfd_z8k_arch =
 196 {
 197   32, 16, 8, bfd_arch_z8k, bfd_mach_z8002, "z8k", "z8002", 1, true, compatible, scan_mach, &arch_info_struct[0],
 198 };