bfd/cpu-h8300.c

   1 /* BFD library support routines for the Renesas H8/300 architecture.
   2    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 2000, 2001, 2002, 2003
   3    Free Software Foundation, Inc.
   4    Hacked by Steve Chamberlain of Cygnus Support.
   5
   6    This file is part of BFD, the Binary File Descriptor library.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  21
  22 #include "bfd.h"
  23 #include "sysdep.h"
  24 #include "libbfd.h"
  25
  26 static bfd_boolean
  27 h8300_scan (const struct bfd_arch_info *info, const char *string)
  28 {
  29   if (*string != 'h' && *string != 'H')
  30     return FALSE;
  31
  32   string++;
  33   if (*string != '8')
  34     return FALSE;
  35
  36   string++;
  37   if (*string == '/')
  38     string++;
  39
  40   if (*string != '3')
  41     return FALSE;
  42   string++;
  43   if (*string != '0')
  44     return FALSE;
  45   string++;
  46   if (*string != '0')
  47     return FALSE;
  48   string++;
  49   if (*string == '-')
  50     string++;
  51
  52   /* In ELF linker scripts, we typically express the architecture/machine
  53      as architecture:machine.
  54
  55      So if we've matched so far and encounter a colon, try to match the
  56      string following the colon.  */
  57   if (*string == ':')
  58     {
  59       string++;
  60       return h8300_scan (info, string);
  61     }
  62
  63   if (*string == 'h' || *string == 'H')
  64     {
  65       string++;
  66       if (*string == 'n' || *string == 'N')
  67         return (info->mach == bfd_mach_h8300hn);
  68
  69       return (info->mach == bfd_mach_h8300h);
  70     }
  71   else if (*string == 's' || *string == 'S')
  72     {
  73       string++;
  74       if (*string == 'n' || *string == 'N')
  75         return (info->mach == bfd_mach_h8300sn);
  76
  77       if (*string == 'x' || *string == 'X')
  78         {
  79           string++;
  80           if (*string == 'n' || *string == 'N')
  81             return (info->mach == bfd_mach_h8300sxn);
  82
  83           return (info->mach == bfd_mach_h8300sx);
  84         }
  85
  86       return (info->mach == bfd_mach_h8300s);
  87     }
  88   else
  89     return info->mach == bfd_mach_h8300;
  90 }
  91
  92 /* This routine is provided two arch_infos and works out the machine
  93    which would be compatible with both and returns a pointer to its
  94    info structure.  */
  95
  96 static const bfd_arch_info_type *
  97 compatible (const bfd_arch_info_type *in, const bfd_arch_info_type *out)
  98 {
  99   /* It's really not a good idea to mix and match modes.  */
 100   if (in->arch != out->arch || in->mach != out->mach)
 101     return 0;
 102   else
 103     return in;
 104 }
 105
 106 static const bfd_arch_info_type h8300sxn_info_struct =
 107 {
 108   32,                           /* 32 bits in a word */
 109   16,                           /* 16 bits in an address */
 110   8,                            /* 8 bits in a byte */
 111   bfd_arch_h8300,
 112   bfd_mach_h8300sxn,
 113   "h8300sxn",                   /* arch_name  */
 114   "h8300sxn",                   /* printable name */
 115   1,
 116   FALSE,                        /* the default machine */
 117   compatible,
 118   h8300_scan,
 119   0
 120 };
 121
 122 static const bfd_arch_info_type h8300sx_info_struct =
 123 {
 124   32,                           /* 32 bits in a word */
 125   32,                           /* 32 bits in an address */
 126   8,                            /* 8 bits in a byte */
 127   bfd_arch_h8300,
 128   bfd_mach_h8300sx,
 129   "h8300sx",                    /* arch_name  */
 130   "h8300sx",                    /* printable name */
 131   1,
 132   FALSE,                        /* the default machine */
 133   compatible,
 134   h8300_scan,
 135   &h8300sxn_info_struct
 136 };
 137
 138 static const bfd_arch_info_type h8300sn_info_struct =
 139 {
 140   32,                           /* 32 bits in a word.  */
 141   16,                           /* 16 bits in an address.  */
 142   8,                            /* 8 bits in a byte.  */
 143   bfd_arch_h8300,
 144   bfd_mach_h8300sn,
 145   "h8300sn",                    /* Architecture name.  */
 146   "h8300sn",                    /* Printable name.  */
 147   1,
 148   FALSE,                        /* The default machine.  */
 149   compatible,
 150   h8300_scan,
 151   &h8300sx_info_struct
 152 };
 153
 154 static const bfd_arch_info_type h8300hn_info_struct =
 155 {
 156   32,                           /* 32 bits in a word.  */
 157   16,                           /* 16 bits in an address.  */
 158   8,                            /* 8 bits in a byte.  */
 159   bfd_arch_h8300,
 160   bfd_mach_h8300hn,
 161   "h8300hn",                    /* Architecture name.  */
 162   "h8300hn",                    /* Printable name.  */
 163   1,
 164   FALSE,                        /* The default machine.  */
 165   compatible,
 166   h8300_scan,
 167   &h8300sn_info_struct
 168 };
 169
 170 static const bfd_arch_info_type h8300s_info_struct =
 171 {
 172   32,                           /* 32 bits in a word.  */
 173   32,                           /* 32 bits in an address.  */
 174   8,                            /* 8 bits in a byte.  */
 175   bfd_arch_h8300,
 176   bfd_mach_h8300s,
 177   "h8300s",                     /* Architecture name.  */
 178   "h8300s",                     /* Printable name.  */
 179   1,
 180   FALSE,                        /* The default machine.  */
 181   compatible,
 182   h8300_scan,
 183   & h8300hn_info_struct
 184 };
 185
 186 static const bfd_arch_info_type h8300h_info_struct =
 187 {
 188   32,                           /* 32 bits in a word.  */
 189   32,                           /* 32 bits in an address.  */
 190   8,                            /* 8 bits in a byte.  */
 191   bfd_arch_h8300,
 192   bfd_mach_h8300h,
 193   "h8300h",                     /* Architecture name.  */
 194   "h8300h",                     /* Printable name.  */
 195   1,
 196   FALSE,                        /* The default machine.  */
 197   compatible,
 198   h8300_scan,
 199   &h8300s_info_struct
 200 };
 201
 202 const bfd_arch_info_type bfd_h8300_arch =
 203 {
 204   16,                           /* 16 bits in a word.  */
 205   16,                           /* 16 bits in an address.  */
 206   8,                            /* 8 bits in a byte.  */
 207   bfd_arch_h8300,
 208   bfd_mach_h8300,
 209   "h8300",                      /* Architecture name.  */
 210   "h8300",                      /* Printable name.  */
 211   1,
 212   TRUE,                         /* The default machine.  */
 213   compatible,
 214   h8300_scan,
 215   &h8300h_info_struct
 216 };
 217
 218 /* Pad the given address to 32 bits, converting 16-bit and 24-bit
 219    addresses into the values they would have had on a h8s target.  */
 220
 221 bfd_vma
 222 bfd_h8300_pad_address (bfd *abfd, bfd_vma address)
 223 {
 224   /* Cope with bfd_vma's larger than 32 bits.  */
 225   address &= 0xffffffffu;
 226
 227   switch (bfd_get_mach (abfd))
 228     {
 229     case bfd_mach_h8300:
 230     case bfd_mach_h8300hn:
 231     case bfd_mach_h8300sn:
 232     case bfd_mach_h8300sxn:
 233       /* Sign extend a 16-bit address.  */
 234       if (address >= 0x8000)
 235         return address | 0xffff0000u;
 236       return address;
 237
 238     case bfd_mach_h8300h:
 239       /* Sign extend a 24-bit address.  */
 240       if (address >= 0x800000)
 241         return address | 0xff000000u;
 242       return address;
 243
 244     case bfd_mach_h8300s:
 245     case bfd_mach_h8300sx:
 246       return address;
 247
 248     default:
 249       abort ();
 250     }
 251 }