bfd/cpu-h8300.c

   1 /* BFD library support routines for the Renesas H8/300 architecture.
   2    Copyright (C) 1990-2019 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 #include "sysdep.h"
  23 #include "bfd.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   bfd_arch_default_fill,
 130   0
 131 };
 132
 133 static const bfd_arch_info_type h8300sx_info_struct =
 134 {
 135   32,                           /* 32 bits in a word */
 136   32,                           /* 32 bits in an address */
 137   8,                            /* 8 bits in a byte */
 138   bfd_arch_h8300,
 139   bfd_mach_h8300sx,
 140   "h8300sx",                    /* arch_name  */
 141   "h8300sx",                    /* printable name */
 142   1,
 143   FALSE,                        /* the default machine */
 144   compatible,
 145   h8300_scan,
 146   bfd_arch_default_fill,
 147   &h8300sxn_info_struct
 148 };
 149
 150 static const bfd_arch_info_type h8300sn_info_struct =
 151 {
 152   32,                           /* 32 bits in a word.  */
 153   16,                           /* 16 bits in an address.  */
 154   8,                            /* 8 bits in a byte.  */
 155   bfd_arch_h8300,
 156   bfd_mach_h8300sn,
 157   "h8300sn",                    /* Architecture name.  */
 158   "h8300sn",                    /* Printable name.  */
 159   1,
 160   FALSE,                        /* The default machine.  */
 161   compatible,
 162   h8300_scan,
 163   bfd_arch_default_fill,
 164   &h8300sx_info_struct
 165 };
 166
 167 static const bfd_arch_info_type h8300hn_info_struct =
 168 {
 169   32,                           /* 32 bits in a word.  */
 170   16,                           /* 16 bits in an address.  */
 171   8,                            /* 8 bits in a byte.  */
 172   bfd_arch_h8300,
 173   bfd_mach_h8300hn,
 174   "h8300hn",                    /* Architecture name.  */
 175   "h8300hn",                    /* Printable name.  */
 176   1,
 177   FALSE,                        /* The default machine.  */
 178   compatible,
 179   h8300_scan,
 180   bfd_arch_default_fill,
 181   &h8300sn_info_struct
 182 };
 183
 184 static const bfd_arch_info_type h8300s_info_struct =
 185 {
 186   32,                           /* 32 bits in a word.  */
 187   32,                           /* 32 bits in an address.  */
 188   8,                            /* 8 bits in a byte.  */
 189   bfd_arch_h8300,
 190   bfd_mach_h8300s,
 191   "h8300s",                     /* Architecture name.  */
 192   "h8300s",                     /* Printable name.  */
 193   1,
 194   FALSE,                        /* The default machine.  */
 195   compatible,
 196   h8300_scan,
 197   bfd_arch_default_fill,
 198   & h8300hn_info_struct
 199 };
 200
 201 static const bfd_arch_info_type h8300h_info_struct =
 202 {
 203   32,                           /* 32 bits in a word.  */
 204   32,                           /* 32 bits in an address.  */
 205   8,                            /* 8 bits in a byte.  */
 206   bfd_arch_h8300,
 207   bfd_mach_h8300h,
 208   "h8300h",                     /* Architecture name.  */
 209   "h8300h",                     /* Printable name.  */
 210   1,
 211   FALSE,                        /* The default machine.  */
 212   compatible,
 213   h8300_scan,
 214   bfd_arch_default_fill,
 215   &h8300s_info_struct
 216 };
 217
 218 const bfd_arch_info_type bfd_h8300_arch =
 219 {
 220   16,                           /* 16 bits in a word.  */
 221   16,                           /* 16 bits in an address.  */
 222   8,                            /* 8 bits in a byte.  */
 223   bfd_arch_h8300,
 224   bfd_mach_h8300,
 225   "h8300",                      /* Architecture name.  */
 226   "h8300",                      /* Printable name.  */
 227   1,
 228   TRUE,                         /* The default machine.  */
 229   compatible,
 230   h8300_scan,
 231   bfd_arch_default_fill,
 232   &h8300h_info_struct
 233 };
 234
 235 /* Pad the given address to 32 bits, converting 16-bit and 24-bit
 236    addresses into the values they would have had on a h8s target.  */
 237
 238 bfd_vma
 239 bfd_h8300_pad_address (bfd *abfd, bfd_vma address)
 240 {
 241   /* Cope with bfd_vma's larger than 32 bits.  */
 242   address &= 0xffffffffu;
 243
 244   switch (bfd_get_mach (abfd))
 245     {
 246     case bfd_mach_h8300:
 247     case bfd_mach_h8300hn:
 248     case bfd_mach_h8300sn:
 249     case bfd_mach_h8300sxn:
 250       /* Sign extend a 16-bit address.  */
 251       if (address >= 0x8000)
 252         return address | 0xffff0000u;
 253       return address;
 254
 255     case bfd_mach_h8300h:
 256       /* Sign extend a 24-bit address.  */
 257       if (address >= 0x800000)
 258         return address | 0xff000000u;
 259       return address;
 260
 261     case bfd_mach_h8300s:
 262     case bfd_mach_h8300sx:
 263       return address;
 264
 265     default:
 266       abort ();
 267     }
 268 }