bfd/cpu-z8k.c

   1 /* BFD library support routines for the Z800n architecture.
   2    Copyright 1992, 1993, 1994, 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
  26   PARAMS ((const struct bfd_arch_info *, const char *));
  27 static const bfd_arch_info_type *compatible
  28   PARAMS ((const bfd_arch_info_type *, const bfd_arch_info_type *));
  29
  30 #if 0                           /* not used currently */
  31 /*
  32 Relocations for the Z8K
  33
  34 */
  35 static bfd_reloc_status_type
  36 howto16_callback (abfd, reloc_entry, symbol_in, data,
  37                   ignore_input_section, ignore_bfd)
  38      bfd *abfd;
  39      arelent *reloc_entry;
  40      struct symbol_cache_entry *symbol_in;
  41      PTR data;
  42      asection *ignore_input_section;
  43      bfd *ignore_bfd;
  44 {
  45   long relocation = 0;
  46   bfd_vma addr = reloc_entry->address;
  47   long x = bfd_get_16 (abfd, (bfd_byte *) data + addr);
  48
  49   HOWTO_PREPARE (relocation, symbol_in);
  50
  51   x = (x + relocation + reloc_entry->addend);
  52
  53   bfd_put_16 (abfd, x, (bfd_byte *) data + addr);
  54   return bfd_reloc_ok;
  55 }
  56
  57 static bfd_reloc_status_type
  58 howto8_callback (abfd, reloc_entry, symbol_in, data,
  59                  ignore_input_section, ignore_bfd)
  60      bfd *abfd;
  61      arelent *reloc_entry;
  62      struct symbol_cache_entry *symbol_in;
  63      PTR data;
  64      asection *ignore_input_section;
  65      bfd *ignore_bfd;
  66 {
  67   long relocation = 0;
  68   bfd_vma addr = reloc_entry->address;
  69   long x = bfd_get_8 (abfd, (bfd_byte *) data + addr);
  70
  71   HOWTO_PREPARE (relocation, symbol_in);
  72
  73   x = (x + relocation + reloc_entry->addend);
  74
  75   bfd_put_8 (abfd, x, (bfd_byte *) data + addr);
  76   return bfd_reloc_ok;
  77 }
  78
  79 static bfd_reloc_status_type
  80 howto8_FFnn_callback (abfd, reloc_entry, symbol_in, data,
  81                       ignore_input_section, ignore_bfd)
  82      bfd *abfd;
  83      arelent *reloc_entry;
  84      struct symbol_cache_entry *symbol_in;
  85      PTR data;
  86      asection *ignore_input_section;
  87      bfd *ignore_bfd;
  88 {
  89   long relocation = 0;
  90   bfd_vma addr = reloc_entry->address;
  91
  92   long x = bfd_get_8 (abfd, (bfd_byte *) data + addr);
  93   abort ();
  94   HOWTO_PREPARE (relocation, symbol_in);
  95
  96   x = (x + relocation + reloc_entry->addend);
  97
  98   bfd_put_8 (abfd, x, (bfd_byte *) data + addr);
  99   return bfd_reloc_ok;
 100 }
 101
 102 static bfd_reloc_status_type
 103 howto8_pcrel_callback (abfd, reloc_entry, symbol_in, data,
 104                        ignore_input_section, ignore_bfd)
 105      bfd *abfd;
 106      arelent *reloc_entry;
 107      struct symbol_cache_entry *symbol_in;
 108      PTR data;
 109      asection *ignore_input_section;
 110      bfd *ignore_bfd;
 111 {
 112   long relocation = 0;
 113   bfd_vma addr = reloc_entry->address;
 114   long x = bfd_get_8 (abfd, (bfd_byte *) data + addr);
 115   abort ();
 116   HOWTO_PREPARE (relocation, symbol_in);
 117
 118   x = (x + relocation + reloc_entry->addend);
 119
 120   bfd_put_8 (abfd, x, (bfd_byte *) data + addr);
 121   return bfd_reloc_ok;
 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 static reloc_howto_type *
 136 local_bfd_reloc_type_lookup (arch, code)
 137      const struct bfd_arch_info *arch;
 138      bfd_reloc_code_real_type code;
 139 {
 140   switch (code)
 141     {
 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     default:
 151       return (reloc_howto_type *) NULL;
 152     }
 153 }
 154 #endif
 155
 156 static boolean
 157 scan_mach (info, string)
 158      const struct bfd_arch_info *info;
 159      const char *string;
 160 {
 161   if (strcmp (string, "z8001") == 0 || strcmp (string, "z8k") == 0)
 162     {
 163       return bfd_mach_z8001 == info->mach;
 164     }
 165   if (strcmp (string, "z8002") == 0)
 166     {
 167       return bfd_mach_z8002 == info->mach;
 168     }
 169   return false;
 170 }
 171
 172 /* This routine is provided two arch_infos and returns whether
 173    they'd be compatible */
 174
 175 static const bfd_arch_info_type *
 176 compatible (a, b)
 177      const bfd_arch_info_type *a;
 178      const bfd_arch_info_type *b;
 179 {
 180   if (a->arch != b->arch || a->mach != b->mach)
 181     return NULL;
 182   return a;
 183 }
 184
 185 static const bfd_arch_info_type arch_info_struct[] =
 186 {
 187   {32, 32, 8, bfd_arch_z8k, bfd_mach_z8001, "z8k", "z8001", 1, false, compatible, scan_mach, 0,},
 188 };
 189
 190 const bfd_arch_info_type bfd_z8k_arch =
 191 {
 192   32, 16, 8, bfd_arch_z8k, bfd_mach_z8002, "z8k", "z8002", 1, true, compatible, scan_mach, &arch_info_struct[0],
 193 };