bfd/cpu-arm.c

   1 /* BFD support for the ARM processor
   2    Copyright 1994, 1997, 1999, 2000, 2002 Free Software Foundation, Inc.
   3    Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org)
   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 const bfd_arch_info_type * compatible
  26   PARAMS ((const bfd_arch_info_type *, const bfd_arch_info_type *));
  27 static boolean scan
  28   PARAMS ((const struct bfd_arch_info *, const char *));
  29
  30 /* This routine is provided two arch_infos and works out which ARM
  31    machine which would be compatible with both and returns a pointer
  32    to its info structure.  */
  33
  34 static const bfd_arch_info_type *
  35 compatible (a,b)
  36      const bfd_arch_info_type * a;
  37      const bfd_arch_info_type * b;
  38 {
  39   /* If a & b are for different architecture we can do nothing.  */
  40   if (a->arch != b->arch)
  41       return NULL;
  42
  43   /* If a & b are for the same machine then all is well.  */
  44   if (a->mach == b->mach)
  45     return a;
  46
  47   /* Otherwise if either a or b is the 'default' machine
  48      then it can be polymorphed into the other.  */
  49   if (a->the_default)
  50     return b;
  51
  52   if (b->the_default)
  53     return a;
  54
  55   /* So far all newer ARM architecture cores are
  56      supersets of previous cores.  */
  57   if (a->mach < b->mach)
  58     return b;
  59   else if (a->mach > b->mach)
  60     return a;
  61
  62   /* Never reached!  */
  63   return NULL;
  64 }
  65
  66 static struct
  67 {
  68   unsigned int mach;
  69   char *       name;
  70 }
  71 processors[] =
  72 {
  73   { bfd_mach_arm_2,  "arm2"     },
  74   { bfd_mach_arm_2a, "arm250"   },
  75   { bfd_mach_arm_2a, "arm3"     },
  76   { bfd_mach_arm_3,  "arm6"     },
  77   { bfd_mach_arm_3,  "arm60"    },
  78   { bfd_mach_arm_3,  "arm600"   },
  79   { bfd_mach_arm_3,  "arm610"   },
  80   { bfd_mach_arm_3,  "arm7"     },
  81   { bfd_mach_arm_3,  "arm710"   },
  82   { bfd_mach_arm_3,  "arm7500"  },
  83   { bfd_mach_arm_3,  "arm7d"    },
  84   { bfd_mach_arm_3,  "arm7di"   },
  85   { bfd_mach_arm_3M, "arm7dm"   },
  86   { bfd_mach_arm_3M, "arm7dmi"  },
  87   { bfd_mach_arm_4T, "arm7tdmi" },
  88   { bfd_mach_arm_4,  "arm8"     },
  89   { bfd_mach_arm_4,  "arm810"   },
  90   { bfd_mach_arm_4,  "arm9"     },
  91   { bfd_mach_arm_4,  "arm920"   },
  92   { bfd_mach_arm_4T, "arm920t"  },
  93   { bfd_mach_arm_4T, "arm9tdmi" },
  94   { bfd_mach_arm_4,  "sa1"      },
  95   { bfd_mach_arm_4,  "strongarm"},
  96   { bfd_mach_arm_4,  "strongarm110" },
  97   { bfd_mach_arm_4,  "strongarm1100" },
  98   { bfd_mach_arm_XScale, "xscale" }
  99 };
 100
 101 static boolean
 102 scan (info, string)
 103      const struct bfd_arch_info * info;
 104      const char * string;
 105 {
 106   int  i;
 107
 108   /* First test for an exact match.  */
 109   if (strcasecmp (string, info->printable_name) == 0)
 110     return true;
 111
 112   /* Next check for a processor name instead of an Architecture name.  */
 113   for (i = sizeof (processors) / sizeof (processors[0]); i--;)
 114     {
 115       if (strcasecmp (string, processors [i].name) == 0)
 116         break;
 117     }
 118
 119   if (i != -1 && info->mach == processors [i].mach)
 120     return true;
 121
 122   /* Finally check for the default architecture.  */
 123   if (strcasecmp (string, "arm") == 0)
 124     return info->the_default;
 125
 126   return false;
 127 }
 128
 129 #define N(number, print, default, next)  \
 130 {  32, 32, 8, bfd_arch_arm, number, "arm", print, 4, default, compatible, scan, next }
 131
 132 static const bfd_arch_info_type arch_info_struct[] =
 133 {
 134   N (bfd_mach_arm_2,      "armv2",   false, & arch_info_struct[1]),
 135   N (bfd_mach_arm_2a,     "armv2a",  false, & arch_info_struct[2]),
 136   N (bfd_mach_arm_3,      "armv3",   false, & arch_info_struct[3]),
 137   N (bfd_mach_arm_3M,     "armv3m",  false, & arch_info_struct[4]),
 138   N (bfd_mach_arm_4,      "armv4",   false, & arch_info_struct[5]),
 139   N (bfd_mach_arm_4T,     "armv4t",  false, & arch_info_struct[6]),
 140   N (bfd_mach_arm_5,      "armv5",   false, & arch_info_struct[7]),
 141   N (bfd_mach_arm_5T,     "armv5t",  false, & arch_info_struct[8]),
 142   N (bfd_mach_arm_5TE,    "armv5te", false, & arch_info_struct[9]),
 143   N (bfd_mach_arm_XScale, "xscale",  false, NULL)
 144 };
 145
 146 const bfd_arch_info_type bfd_arm_arch =
 147   N (0, "arm", true, & arch_info_struct[0]);