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,
   3    2003, 2004 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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   if (in->arch != out->arch)
 100     return 0;
 101   if (in->mach == bfd_mach_h8300sx && out->mach == bfd_mach_h8300s)
 102     return in;
 103   if (in->mach == bfd_mach_h8300s && out->mach == bfd_mach_h8300sx)
 104     return out;
 105   if (in->mach == bfd_mach_h8300sxn && out->mach == bfd_mach_h8300sn)
 106     return in;
 107   if (in->mach == bfd_mach_h8300sn && out->mach == bfd_mach_h8300sxn)
 108     return out;
 109   /* It's really not a good idea to mix and match modes.  */
 110   if (in->mach != out->mach)
 111     return 0;
 112   else
 113     return in;
 114 }
 115
 116 static const bfd_arch_info_type h8300sxn_info_struct =
 117 {
 118   32,                           /* 32 bits in a word */
 119   16,                           /* 16 bits in an address */
 120   8,                            /* 8 bits in a byte */
 121   bfd_arch_h8300,
 122   bfd_mach_h8300sxn,
 123   "h8300sxn",                   /* arch_name  */
 124   "h8300sxn",                   /* printable name */
 125   1,
 126   FALSE,                        /* the default machine */
 127   compatible,
 128   h8300_scan,
 129   0
 130 };
 131
 132 static const bfd_arch_info_type h8300sx_info_struct =
 133 {
 134   32,                           /* 32 bits in a word */
 135   32,                           /* 32 bits in an address */
 136   8,                            /* 8 bits in a byte */
 137   bfd_arch_h8300,
 138   bfd_mach_h8300sx,
 139   "h8300sx",                    /* arch_name  */
 140   "h8300sx",                    /* printable name */
 141   1,
 142   FALSE,                        /* the default machine */
 143   compatible,
 144   h8300_scan,
 145   &h8300sxn_info_struct
 146 };
 147
 148 static const bfd_arch_info_type h8300sn_info_struct =
 149 {
 150   32,                           /* 32 bits in a word.  */
 151   16,                           /* 16 bits in an address.  */
 152   8,                            /* 8 bits in a byte.  */
 153   bfd_arch_h8300,
 154   bfd_mach_h8300sn,
 155   "h8300sn",                    /* Architecture name.  */
 156   "h8300sn",                    /* Printable name.  */
 157   1,
 158   FALSE,                        /* The default machine.  */
 159   compatible,
 160   h8300_scan,
 161   &h8300sx_info_struct
 162 };
 163
 164 static const bfd_arch_info_type h8300hn_info_struct =
 165 {
 166   32,                           /* 32 bits in a word.  */
 167   16,                           /* 16 bits in an address.  */
 168   8,                            /* 8 bits in a byte.  */
 169   bfd_arch_h8300,
 170   bfd_mach_h8300hn,
 171   "h8300hn",                    /* Architecture name.  */
 172   "h8300hn",                    /* Printable name.  */
 173   1,
 174   FALSE,                        /* The default machine.  */
 175   compatible,
 176   h8300_scan,
 177   &h8300sn_info_struct
 178 };
 179
 180 static const bfd_arch_info_type h8300s_info_struct =
 181 {
 182   32,                           /* 32 bits in a word.  */
 183   32,                           /* 32 bits in an address.  */
 184   8,                            /* 8 bits in a byte.  */
 185   bfd_arch_h8300,
 186   bfd_mach_h8300s,
 187   "h8300s",                     /* Architecture name.  */
 188   "h8300s",                     /* Printable name.  */
 189   1,
 190   FALSE,                        /* The default machine.  */
 191   compatible,
 192   h8300_scan,
 193   & h8300hn_info_struct
 194 };
 195
 196 static const bfd_arch_info_type h8300h_info_struct =
 197 {
 198   32,                           /* 32 bits in a word.  */
 199   32,                           /* 32 bits in an address.  */
 200   8,                            /* 8 bits in a byte.  */
 201   bfd_arch_h8300,
 202   bfd_mach_h8300h,
 203   "h8300h",                     /* Architecture name.  */
 204   "h8300h",                     /* Printable name.  */
 205   1,
 206   FALSE,                        /* The default machine.  */
 207   compatible,
 208   h8300_scan,
 209   &h8300s_info_struct
 210 };
 211
 212 const bfd_arch_info_type bfd_h8300_arch =
 213 {
 214   16,                           /* 16 bits in a word.  */
 215   16,                           /* 16 bits in an address.  */
 216   8,                            /* 8 bits in a byte.  */
 217   bfd_arch_h8300,
 218   bfd_mach_h8300,
 219   "h8300",                      /* Architecture name.  */
 220   "h8300",                      /* Printable name.  */
 221   1,
 222   TRUE,                         /* The default machine.  */
 223   compatible,
 224   h8300_scan,
 225   &h8300h_info_struct
 226 };
 227
 228 /* Pad the given address to 32 bits, converting 16-bit and 24-bit
 229    addresses into the values they would have had on a h8s target.  */
 230
 231 bfd_vma
 232 bfd_h8300_pad_address (bfd *abfd, bfd_vma address)
 233 {
 234   /* Cope with bfd_vma's larger than 32 bits.  */
 235   address &= 0xffffffffu;
 236
 237   switch (bfd_get_mach (abfd))
 238     {
 239     case bfd_mach_h8300:
 240     case bfd_mach_h8300hn:
 241     case bfd_mach_h8300sn:
 242     case bfd_mach_h8300sxn:
 243       /* Sign extend a 16-bit address.  */
 244       if (address >= 0x8000)
 245         return address | 0xffff0000u;
 246       return address;
 247
 248     case bfd_mach_h8300h:
 249       /* Sign extend a 24-bit address.  */
 250       if (address >= 0x800000)
 251         return address | 0xff000000u;
 252       return address;
 253
 254     case bfd_mach_h8300s:
 255     case bfd_mach_h8300sx:
 256       return address;
 257
 258     default:
 259       abort ();
 260     }
 261 }