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/* BFD support for the ARM processor

   Copyright 1994, 1997, 1999, 2000, 2002 Free Software Foundation, Inc.

   Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org)

   This file is part of BFD, the Binary File Descriptor library.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 2 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#include "bfd.h"

#include "sysdep.h"

#include "libbfd.h"

static const bfd_arch_info_type * compatible

  PARAMS ((const bfd_arch_info_type *, const bfd_arch_info_type *));

static boolean scan

  PARAMS ((const struct bfd_arch_info *, const char *));

/* This routine is provided two arch_infos and works out which ARM

   machine which would be compatible with both and returns a pointer

   to its info structure.  */

static const bfd_arch_info_type *

compatible (a,b)

     const bfd_arch_info_type * a;

     const bfd_arch_info_type * b;

{

  /* If a & b are for different architecture we can do nothing.  */

  if (a->arch != b->arch)

      return NULL;

  /* If a & b are for the same machine then all is well.  */

  if (a->mach == b->mach)

    return a;

  /* Otherwise if either a or b is the 'default' machine

     then it can be polymorphed into the other.  */

  if (a->the_default)

    return b;

  if (b->the_default)

    return a;

  /* So far all newer ARM architecture cores are

     supersets of previous cores.  */

  if (a->mach < b->mach)

    return b;

  else if (a->mach > b->mach)

    return a;

  /* Never reached!  */

  return NULL;

}

static struct

{

  unsigned int mach;

  char *       name;

}

processors[] =

{

  { bfd_mach_arm_2,  "arm2"     },

  { bfd_mach_arm_2a, "arm250"   },

  { bfd_mach_arm_2a, "arm3"     },

  { bfd_mach_arm_3,  "arm6"     },

  { bfd_mach_arm_3,  "arm60"    },

  { bfd_mach_arm_3,  "arm600"   },

  { bfd_mach_arm_3,  "arm610"   },

  { bfd_mach_arm_3,  "arm7"     },

  { bfd_mach_arm_3,  "arm710"   },

  { bfd_mach_arm_3,  "arm7500"  },

  { bfd_mach_arm_3,  "arm7d"    },

  { bfd_mach_arm_3,  "arm7di"   },

  { bfd_mach_arm_3M, "arm7dm"   },

  { bfd_mach_arm_3M, "arm7dmi"  },

  { bfd_mach_arm_4T, "arm7tdmi" },

  { bfd_mach_arm_4,  "arm8"     },

  { bfd_mach_arm_4,  "arm810"   },

  { bfd_mach_arm_4,  "arm9"     },

  { bfd_mach_arm_4,  "arm920"   },

  { bfd_mach_arm_4T, "arm920t"  },

  { bfd_mach_arm_4T, "arm9tdmi" },

  { bfd_mach_arm_4,  "sa1"      },

  { bfd_mach_arm_4,  "strongarm"},

  { bfd_mach_arm_4,  "strongarm110" },

  { bfd_mach_arm_4,  "strongarm1100" },

  { bfd_mach_arm_XScale, "xscale" }

};

static boolean

scan (info, string)

     const struct bfd_arch_info * info;

     const char * string;

{

  int  i;

  /* First test for an exact match.  */

  if (strcasecmp (string, info->printable_name) == 0)

    return true;

  /* Next check for a processor name instead of an Architecture name.  */

  for (i = sizeof (processors) / sizeof (processors[0]); i--;)

    {

      if (strcasecmp (string, processors [i].name) == 0)

        break;

    }

  if (i != -1 && info->mach == processors [i].mach)

    return true;

  /* Finally check for the default architecture.  */

  if (strcasecmp (string, "arm") == 0)

    return info->the_default;

  return false;

}

#define N(number, print, default, next)  \

{  32, 32, 8, bfd_arch_arm, number, "arm", print, 4, default, compatible, scan, next }

static const bfd_arch_info_type arch_info_struct[] =

{

  N (bfd_mach_arm_2,      "armv2",   false, & arch_info_struct[1]),

  N (bfd_mach_arm_2a,     "armv2a",  false, & arch_info_struct[2]),

  N (bfd_mach_arm_3,      "armv3",   false, & arch_info_struct[3]),

  N (bfd_mach_arm_3M,     "armv3m",  false, & arch_info_struct[4]),

  N (bfd_mach_arm_4,      "armv4",   false, & arch_info_struct[5]),

  N (bfd_mach_arm_4T,     "armv4t",  false, & arch_info_struct[6]),

  N (bfd_mach_arm_5,      "armv5",   false, & arch_info_struct[7]),

  N (bfd_mach_arm_5T,     "armv5t",  false, & arch_info_struct[8]),

  N (bfd_mach_arm_5TE,    "armv5te", false, & arch_info_struct[9]),

  N (bfd_mach_arm_XScale, "xscale",  false, NULL)

};

const bfd_arch_info_type bfd_arm_arch =

  N (0, "arm", true, & arch_info_struct[0]);