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/* Instruction building/extraction support for fr30. -*- C -*-

/* Instruction building/extraction support for fr30. -*- C -*-

THIS FILE IS MACHINE GENERATED WITH CGEN: Cpu tools GENerator.

THIS FILE IS MACHINE GENERATED WITH CGEN: Cpu tools GENerator.

- the resultant file is machine generated, cgen-ibld.in isn't

- the resultant file is machine generated, cgen-ibld.in isn't

Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.

Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.

This file is part of the GNU Binutils and GDB, the GNU debugger.

This file is part of the GNU Binutils and GDB, the GNU debugger.

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

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

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

the Free Software Foundation; either version 2, or (at your option)

the Free Software Foundation; either version 2, or (at your option)

any later version.

any later version.

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

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

but WITHOUT ANY WARRANTY; without even the implied warranty of

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

GNU General Public License for more details.

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

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.,

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

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

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

/* ??? Eventually more and more of this stuff can go to cpu-independent files.

/* ??? Eventually more and more of this stuff can go to cpu-independent files.

   Keep that in mind.  */

   Keep that in mind.  */

#include "sysdep.h"

#include "sysdep.h"

#include <ctype.h>

#include <ctype.h>

#include <stdio.h>

#include <stdio.h>

#include "ansidecl.h"

#include "ansidecl.h"

#include "dis-asm.h"

#include "dis-asm.h"

#include "bfd.h"

#include "bfd.h"

#include "symcat.h"

#include "symcat.h"

#include "fr30-desc.h"

#include "fr30-desc.h"

#include "fr30-opc.h"

#include "fr30-opc.h"

#include "opintl.h"

#include "opintl.h"

#undef min

#undef min

#define min(a,b) ((a) < (b) ? (a) : (b))

#define min(a,b) ((a) < (b) ? (a) : (b))

#undef max

#undef max

#define max(a,b) ((a) > (b) ? (a) : (b))

#define max(a,b) ((a) > (b) ? (a) : (b))

/* Used by the ifield rtx function.  */

/* Used by the ifield rtx function.  */

#define FLD(f) (fields->f)

#define FLD(f) (fields->f)

static const char * insert_normal

static const char * insert_normal

     PARAMS ((CGEN_CPU_DESC, long, unsigned int, unsigned int, unsigned int,

     PARAMS ((CGEN_CPU_DESC, long, unsigned int, unsigned int, unsigned int,

              unsigned int, unsigned int, unsigned int, CGEN_INSN_BYTES_PTR));

              unsigned int, unsigned int, unsigned int, CGEN_INSN_BYTES_PTR));

static const char * insert_insn_normal

static const char * insert_insn_normal

     PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *,

     PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *,

              CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma));

              CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma));

static int extract_normal

static int extract_normal

     PARAMS ((CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, CGEN_INSN_INT,

     PARAMS ((CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, CGEN_INSN_INT,

              unsigned int, unsigned int, unsigned int, unsigned int,

              unsigned int, unsigned int, unsigned int, unsigned int,

              unsigned int, unsigned int, bfd_vma, long *));

              unsigned int, unsigned int, bfd_vma, long *));

static int extract_insn_normal

static int extract_insn_normal

     PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *, CGEN_EXTRACT_INFO *,

     PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *, CGEN_EXTRACT_INFO *,

              CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma));

              CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma));

/* Operand insertion.  */

/* Operand insertion.  */

#if ! CGEN_INT_INSN_P

#if ! CGEN_INT_INSN_P

/* Subroutine of insert_normal.  */

/* Subroutine of insert_normal.  */

static CGEN_INLINE void

static CGEN_INLINE void

insert_1 (cd, value, start, length, word_length, bufp)

insert_1 (cd, value, start, length, word_length, bufp)

     CGEN_CPU_DESC cd;

     CGEN_CPU_DESC cd;

     unsigned long value;

     unsigned long value;

     int start,length,word_length;

     int start,length,word_length;

     unsigned char *bufp;

     unsigned char *bufp;

{

{

  unsigned long x,mask;

  unsigned long x,mask;

  int shift;

  int shift;

  int big_p = CGEN_CPU_INSN_ENDIAN (cd) == CGEN_ENDIAN_BIG;

  int big_p = CGEN_CPU_INSN_ENDIAN (cd) == CGEN_ENDIAN_BIG;

  switch (word_length)

  switch (word_length)

    {

    {

    case 8:

    case 8:

      x = *bufp;

      x = *bufp;

      break;

      break;

    case 16:

    case 16:

      if (big_p)

      if (big_p)

        x = bfd_getb16 (bufp);

        x = bfd_getb16 (bufp);

      else

      else

        x = bfd_getl16 (bufp);

        x = bfd_getl16 (bufp);

      break;

      break;

    case 24:

    case 24:

      /* ??? This may need reworking as these cases don't necessarily

      /* ??? This may need reworking as these cases don't necessarily

         want the first byte and the last two bytes handled like this.  */

         want the first byte and the last two bytes handled like this.  */

      if (big_p)

      if (big_p)

        x = (bufp[0] << 16) | bfd_getb16 (bufp + 1);

        x = (bufp[0] << 16) | bfd_getb16 (bufp + 1);

      else

      else

        x = bfd_getl16 (bufp) | (bufp[2] << 16);

        x = bfd_getl16 (bufp) | (bufp[2] << 16);

      break;

      break;

    case 32:

    case 32:

      if (big_p)

      if (big_p)

        x = bfd_getb32 (bufp);

        x = bfd_getb32 (bufp);

      else

      else

        x = bfd_getl32 (bufp);

        x = bfd_getl32 (bufp);

      break;

      break;

    default :

    default :

      abort ();

      abort ();

    }

    }

  /* Written this way to avoid undefined behaviour.  */

  /* Written this way to avoid undefined behaviour.  */

  mask = (((1L << (length - 1)) - 1) << 1) | 1;

  mask = (((1L << (length - 1)) - 1) << 1) | 1;

  if (CGEN_INSN_LSB0_P)

  if (CGEN_INSN_LSB0_P)

    shift = (start + 1) - length;

    shift = (start + 1) - length;

  else

  else

    shift = (word_length - (start + length));

    shift = (word_length - (start + length));

  x = (x & ~(mask << shift)) | ((value & mask) << shift);

  x = (x & ~(mask << shift)) | ((value & mask) << shift);

  switch (word_length)

  switch (word_length)

    {

    {

    case 8:

    case 8:

      *bufp = x;

      *bufp = x;

      break;

      break;

    case 16:

    case 16:

      if (big_p)

      if (big_p)

        bfd_putb16 (x, bufp);

        bfd_putb16 (x, bufp);

      else

      else

        bfd_putl16 (x, bufp);

        bfd_putl16 (x, bufp);

      break;

      break;

    case 24:

    case 24:

      /* ??? This may need reworking as these cases don't necessarily

      /* ??? This may need reworking as these cases don't necessarily

         want the first byte and the last two bytes handled like this.  */

         want the first byte and the last two bytes handled like this.  */

      if (big_p)

      if (big_p)

        {

        {

          bufp[0] = x >> 16;

          bufp[0] = x >> 16;

          bfd_putb16 (x, bufp + 1);

          bfd_putb16 (x, bufp + 1);

        }

        }

      else

      else

        {

        {

          bfd_putl16 (x, bufp);

          bfd_putl16 (x, bufp);

          bufp[2] = x >> 16;

          bufp[2] = x >> 16;

        }

        }

      break;

      break;

    case 32:

    case 32:

      if (big_p)

      if (big_p)

        bfd_putb32 (x, bufp);

        bfd_putb32 (x, bufp);

      else

      else

        bfd_putl32 (x, bufp);

        bfd_putl32 (x, bufp);

      break;

      break;

    default :

    default :

      abort ();

      abort ();

    }

    }

}

}

#endif /* ! CGEN_INT_INSN_P */

#endif /* ! CGEN_INT_INSN_P */

/* Default insertion routine.

/* Default insertion routine.

   ATTRS is a mask of the boolean attributes.

   ATTRS is a mask of the boolean attributes.

   WORD_OFFSET is the offset in bits from the start of the insn of the value.

   WORD_OFFSET is the offset in bits from the start of the insn of the value.

   WORD_LENGTH is the length of the word in bits in which the value resides.

   WORD_LENGTH is the length of the word in bits in which the value resides.

   START is the starting bit number in the word, architecture origin.

   START is the starting bit number in the word, architecture origin.

   LENGTH is the length of VALUE in bits.

   LENGTH is the length of VALUE in bits.

   TOTAL_LENGTH is the total length of the insn in bits.

   TOTAL_LENGTH is the total length of the insn in bits.

   The result is an error message or NULL if success.  */

   The result is an error message or NULL if success.  */

/* ??? This duplicates functionality with bfd's howto table and

/* ??? This duplicates functionality with bfd's howto table and

   bfd_install_relocation.  */

   bfd_install_relocation.  */

/* ??? This doesn't handle bfd_vma's.  Create another function when

/* ??? This doesn't handle bfd_vma's.  Create another function when

   necessary.  */

   necessary.  */

static const char *

static const char *

insert_normal (cd, value, attrs, word_offset, start, length, word_length,

insert_normal (cd, value, attrs, word_offset, start, length, word_length,

               total_length, buffer)

               total_length, buffer)

     CGEN_CPU_DESC cd;

     CGEN_CPU_DESC cd;

     long value;

     long value;

     unsigned int attrs;

     unsigned int attrs;

     unsigned int word_offset, start, length, word_length, total_length;

     unsigned int word_offset, start, length, word_length, total_length;

     CGEN_INSN_BYTES_PTR buffer;

     CGEN_INSN_BYTES_PTR buffer;

{

{

  static char errbuf[100];

  static char errbuf[100];

  /* Written this way to avoid undefined behaviour.  */

  /* Written this way to avoid undefined behaviour.  */

  unsigned long mask = (((1L << (length - 1)) - 1) << 1) | 1;

  unsigned long mask = (((1L << (length - 1)) - 1) << 1) | 1;

  /* If LENGTH is zero, this operand doesn't contribute to the value.  */

  /* If LENGTH is zero, this operand doesn't contribute to the value.  */

  if (length == 0)

  if (length == 0)

    return NULL;

    return NULL;

  if (CGEN_INT_INSN_P

  if (CGEN_INT_INSN_P

      && word_offset != 0)

      && word_offset != 0)

    abort ();

    abort ();

  if (word_length > 32)

  if (word_length > 32)

    abort ();

    abort ();

  /* For architectures with insns smaller than the base-insn-bitsize,

  /* For architectures with insns smaller than the base-insn-bitsize,

     word_length may be too big.  */

     word_length may be too big.  */

  if (cd->min_insn_bitsize < cd->base_insn_bitsize)

  if (cd->min_insn_bitsize < cd->base_insn_bitsize)

    {

    {

      if (word_offset == 0

      if (word_offset == 0

          && word_length > total_length)

          && word_length > total_length)

        word_length = total_length;

        word_length = total_length;

    }

    }

  /* Ensure VALUE will fit.  */

  /* Ensure VALUE will fit.  */

  if (! CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED))

  if (! CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED))

    {

    {

      unsigned long maxval = mask;

      unsigned long maxval = mask;

      if ((unsigned long) value > maxval)

      if ((unsigned long) value > maxval)

        {

        {

          /* xgettext:c-format */

          /* xgettext:c-format */

          sprintf (errbuf,

          sprintf (errbuf,

                   _("operand out of range (%lu not between 0 and %lu)"),

                   _("operand out of range (%lu not between 0 and %lu)"),

                   value, maxval);

                   value, maxval);

          return errbuf;

          return errbuf;

        }

        }

    }

    }

  else

  else

    {

    {

      long minval = - (1L << (length - 1));

      long minval = - (1L << (length - 1));

      long maxval = (1L << (length - 1)) - 1;

      long maxval = (1L << (length - 1)) - 1;

      if (value < minval || value > maxval)

      if (value < minval || value > maxval)

        {

        {

          sprintf

          sprintf

            /* xgettext:c-format */

            /* xgettext:c-format */

            (errbuf, _("operand out of range (%ld not between %ld and %ld)"),

            (errbuf, _("operand out of range (%ld not between %ld and %ld)"),

             value, minval, maxval);

             value, minval, maxval);

          return errbuf;

          return errbuf;

        }

        }

    }

    }

#if CGEN_INT_INSN_P

#if CGEN_INT_INSN_P

  {

  {

    int shift;

    int shift;

    if (CGEN_INSN_LSB0_P)

    if (CGEN_INSN_LSB0_P)

      shift = (start + 1) - length;

      shift = (start + 1) - length;

    else

    else

      shift = word_length - (start + length);

      shift = word_length - (start + length);

    *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift);

    *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift);

  }

  }

#else /* ! CGEN_INT_INSN_P */

#else /* ! CGEN_INT_INSN_P */

  {

  {

    unsigned char *bufp = (unsigned char *) buffer + word_offset / 8;

    unsigned char *bufp = (unsigned char *) buffer + word_offset / 8;

    insert_1 (cd, value, start, length, word_length, bufp);

    insert_1 (cd, value, start, length, word_length, bufp);

  }

  }

#endif /* ! CGEN_INT_INSN_P */

#endif /* ! CGEN_INT_INSN_P */

  return NULL;

  return NULL;

}

}

/* Default insn builder (insert handler).

/* Default insn builder (insert handler).

   The instruction is recorded in CGEN_INT_INSN_P byte order

   The instruction is recorded in CGEN_INT_INSN_P byte order

   (meaning that if CGEN_INT_INSN_P BUFFER is an int * and thus the value is

   (meaning that if CGEN_INT_INSN_P BUFFER is an int * and thus the value is

   recorded in host byte order, otherwise BUFFER is an array of bytes and the

   recorded in host byte order, otherwise BUFFER is an array of bytes and the

   value is recorded in target byte order).

   value is recorded in target byte order).

   The result is an error message or NULL if success.  */

   The result is an error message or NULL if success.  */

static const char *

static const char *

insert_insn_normal (cd, insn, fields, buffer, pc)

insert_insn_normal (cd, insn, fields, buffer, pc)

     CGEN_CPU_DESC cd;

     CGEN_CPU_DESC cd;

     const CGEN_INSN * insn;

     const CGEN_INSN * insn;

     CGEN_FIELDS * fields;

     CGEN_FIELDS * fields;

     CGEN_INSN_BYTES_PTR buffer;

     CGEN_INSN_BYTES_PTR buffer;

     bfd_vma pc;

     bfd_vma pc;

{

{

  const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);

  const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);

  unsigned long value;

  unsigned long value;

  const unsigned char * syn;

  const unsigned char * syn;

  CGEN_INIT_INSERT (cd);

  CGEN_INIT_INSERT (cd);

  value = CGEN_INSN_BASE_VALUE (insn);

  value = CGEN_INSN_BASE_VALUE (insn);

  /* If we're recording insns as numbers (rather than a string of bytes),

  /* If we're recording insns as numbers (rather than a string of bytes),

     target byte order handling is deferred until later.  */

     target byte order handling is deferred until later.  */

#if CGEN_INT_INSN_P

#if CGEN_INT_INSN_P

  *buffer = value;

  *buffer = value;

#else

#else

  cgen_put_insn_value (cd, buffer, min (cd->base_insn_bitsize,

  cgen_put_insn_value (cd, buffer, min (cd->base_insn_bitsize,

                                        CGEN_FIELDS_BITSIZE (fields)),

                                        CGEN_FIELDS_BITSIZE (fields)),

                       value);

                       value);

#endif /* ! CGEN_INT_INSN_P */

#endif /* ! CGEN_INT_INSN_P */

  /* ??? It would be better to scan the format's fields.

  /* ??? It would be better to scan the format's fields.

     Still need to be able to insert a value based on the operand though;

     Still need to be able to insert a value based on the operand though;

     e.g. storing a branch displacement that got resolved later.

     e.g. storing a branch displacement that got resolved later.

     Needs more thought first.  */

     Needs more thought first.  */

  for (syn = CGEN_SYNTAX_STRING (syntax); * syn != '\0'; ++ syn)

  for (syn = CGEN_SYNTAX_STRING (syntax); * syn != '\0'; ++ syn)

    {

    {

      const char *errmsg;

      const char *errmsg;

      if (CGEN_SYNTAX_CHAR_P (* syn))

      if (CGEN_SYNTAX_CHAR_P (* syn))

        continue;

        continue;

      errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn),

      errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn),

                                       fields, buffer, pc);

                                       fields, buffer, pc);

      if (errmsg)

      if (errmsg)

        return errmsg;

        return errmsg;

    }

    }

  return NULL;

  return NULL;

}

}

/* Operand extraction.  */

/* Operand extraction.  */

#if ! CGEN_INT_INSN_P

#if ! CGEN_INT_INSN_P

/* Subroutine of extract_normal.

/* Subroutine of extract_normal.

   Ensure sufficient bytes are cached in EX_INFO.

   Ensure sufficient bytes are cached in EX_INFO.

   OFFSET is the offset in bytes from the start of the insn of the value.

   OFFSET is the offset in bytes from the start of the insn of the value.

   BYTES is the length of the needed value.

   BYTES is the length of the needed value.

   Returns 1 for success, 0 for failure.  */

   Returns 1 for success, 0 for failure.  */

static CGEN_INLINE int

static CGEN_INLINE int

fill_cache (cd, ex_info, offset, bytes, pc)

fill_cache (cd, ex_info, offset, bytes, pc)

     CGEN_CPU_DESC cd;

     CGEN_CPU_DESC cd;

     CGEN_EXTRACT_INFO *ex_info;

     CGEN_EXTRACT_INFO *ex_info;

     int offset, bytes;

     int offset, bytes;

     bfd_vma pc;

     bfd_vma pc;

{

{

  /* It's doubtful that the middle part has already been fetched so

  /* It's doubtful that the middle part has already been fetched so

     we don't optimize that case.  kiss.  */

     we don't optimize that case.  kiss.  */

  int mask;

  int mask;

  disassemble_info *info = (disassemble_info *) ex_info->dis_info;

  disassemble_info *info = (disassemble_info *) ex_info->dis_info;

  /* First do a quick check.  */

  /* First do a quick check.  */

  mask = (1 << bytes) - 1;

  mask = (1 << bytes) - 1;

  if (((ex_info->valid >> offset) & mask) == mask)

  if (((ex_info->valid >> offset) & mask) == mask)

    return 1;

    return 1;

  /* Search for the first byte we need to read.  */

  /* Search for the first byte we need to read.  */

  for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1)

  for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1)

    if (! (mask & ex_info->valid))

    if (! (mask & ex_info->valid))

      break;

      break;

  if (bytes)

  if (bytes)

    {

    {

      int status;

      int status;

      pc += offset;

      pc += offset;

      status = (*info->read_memory_func)

      status = (*info->read_memory_func)

        (pc, ex_info->insn_bytes + offset, bytes, info);

        (pc, ex_info->insn_bytes + offset, bytes, info);

      if (status != 0)

      if (status != 0)

        {

        {

          (*info->memory_error_func) (status, pc, info);

          (*info->memory_error_func) (status, pc, info);

          return 0;

          return 0;

        }

        }

      ex_info->valid |= ((1 << bytes) - 1) << offset;

      ex_info->valid |= ((1 << bytes) - 1) << offset;

    }

    }

  return 1;

  return 1;

}

}

/* Subroutine of extract_normal.  */

/* Subroutine of extract_normal.  */

static CGEN_INLINE long

static CGEN_INLINE long

extract_1 (cd, ex_info, start, length, word_length, bufp, pc)

extract_1 (cd, ex_info, start, length, word_length, bufp, pc)

     CGEN_CPU_DESC cd;

     CGEN_CPU_DESC cd;

     CGEN_EXTRACT_INFO *ex_info;

     CGEN_EXTRACT_INFO *ex_info;

     int start,length,word_length;

     int start,length,word_length;

     unsigned char *bufp;

     unsigned char *bufp;

     bfd_vma pc;

     bfd_vma pc;

{

{

  unsigned long x,mask;

  unsigned long x,mask;

  int shift;

  int shift;

  int big_p = CGEN_CPU_INSN_ENDIAN (cd) == CGEN_ENDIAN_BIG;

  int big_p = CGEN_CPU_INSN_ENDIAN (cd) == CGEN_ENDIAN_BIG;

  switch (word_length)

  switch (word_length)

    {

    {

    case 8:

    case 8:

      x = *bufp;

      x = *bufp;

      break;

      break;

    case 16:

    case 16:

      if (big_p)

      if (big_p)

        x = bfd_getb16 (bufp);

        x = bfd_getb16 (bufp);

      else

      else

        x = bfd_getl16 (bufp);

        x = bfd_getl16 (bufp);

      break;

      break;

    case 24:

    case 24:

      /* ??? This may need reworking as these cases don't necessarily

      /* ??? This may need reworking as these cases don't necessarily

         want the first byte and the last two bytes handled like this.  */

         want the first byte and the last two bytes handled like this.  */

      if (big_p)

      if (big_p)

        x = (bufp[0] << 16) | bfd_getb16 (bufp + 1);

        x = (bufp[0] << 16) | bfd_getb16 (bufp + 1);

      else

      else

        x = bfd_getl16 (bufp) | (bufp[2] << 16);

        x = bfd_getl16 (bufp) | (bufp[2] << 16);

      break;

      break;

    case 32:

    case 32:

      if (big_p)

      if (big_p)

        x = bfd_getb32 (bufp);

        x = bfd_getb32 (bufp);

      else

      else

        x = bfd_getl32 (bufp);

        x = bfd_getl32 (bufp);

      break;

      break;

    default :

    default :

      abort ();

      abort ();

    }

    }

  /* Written this way to avoid undefined behaviour.  */

  /* Written this way to avoid undefined behaviour.  */

  mask = (((1L << (length - 1)) - 1) << 1) | 1;

  mask = (((1L << (length - 1)) - 1) << 1) | 1;

  if (CGEN_INSN_LSB0_P)

  if (CGEN_INSN_LSB0_P)

    shift = (start + 1) - length;

    shift = (start + 1) - length;

  else

  else

    shift = (word_length - (start + length));

    shift = (word_length - (start + length));

  return (x >> shift) & mask;

  return (x >> shift) & mask;

}

}

#endif /* ! CGEN_INT_INSN_P */

#endif /* ! CGEN_INT_INSN_P */

/* Default extraction routine.

/* Default extraction routine.

   INSN_VALUE is the first base_insn_bitsize bits of the insn in host order,

   INSN_VALUE is the first base_insn_bitsize bits of the insn in host order,

   or sometimes less for cases like the m32r where the base insn size is 32

   or sometimes less for cases like the m32r where the base insn size is 32

   but some insns are 16 bits.

   but some insns are 16 bits.

   ATTRS is a mask of the boolean attributes.  We only need `SIGNED',

   ATTRS is a mask of the boolean attributes.  We only need `SIGNED',

   but for generality we take a bitmask of all of them.

   but for generality we take a bitmask of all of them.

   WORD_OFFSET is the offset in bits from the start of the insn of the value.

   WORD_OFFSET is the offset in bits from the start of the insn of the value.

   WORD_LENGTH is the length of the word in bits in which the value resides.

   WORD_LENGTH is the length of the word in bits in which the value resides.

   START is the starting bit number in the word, architecture origin.

   START is the starting bit number in the word, architecture origin.

   LENGTH is the length of VALUE in bits.

   LENGTH is the length of VALUE in bits.

   TOTAL_LENGTH is the total length of the insn in bits.

   TOTAL_LENGTH is the total length of the insn in bits.

   Returns 1 for success, 0 for failure.  */

   Returns 1 for success, 0 for failure.  */

/* ??? The return code isn't properly used.  wip.  */

/* ??? The return code isn't properly used.  wip.  */

/* ??? This doesn't handle bfd_vma's.  Create another function when

/* ??? This doesn't handle bfd_vma's.  Create another function when

   necessary.  */

   necessary.  */

static int

static int

extract_normal (cd, ex_info, insn_value, attrs, word_offset, start, length,

extract_normal (cd, ex_info, insn_value, attrs, word_offset, start, length,

                word_length, total_length, pc, valuep)

                word_length, total_length, pc, valuep)

     CGEN_CPU_DESC cd;

     CGEN_CPU_DESC cd;

     CGEN_EXTRACT_INFO *ex_info;

     CGEN_EXTRACT_INFO *ex_info;

     CGEN_INSN_INT insn_value;

     CGEN_INSN_INT insn_value;

     unsigned int attrs;

     unsigned int attrs;

     unsigned int word_offset, start, length, word_length, total_length;

     unsigned int word_offset, start, length, word_length, total_length;

     bfd_vma pc;

     bfd_vma pc;

     long *valuep;

     long *valuep;

{

{

  CGEN_INSN_INT value;

  CGEN_INSN_INT value;

  /* If LENGTH is zero, this operand doesn't contribute to the value

  /* If LENGTH is zero, this operand doesn't contribute to the value

     so give it a standard value of zero.  */

     so give it a standard value of zero.  */

  if (length == 0)

  if (length == 0)

    {

    {

      *valuep = 0;

      *valuep = 0;

      return 1;

      return 1;

    }

    }

  if (CGEN_INT_INSN_P

  if (CGEN_INT_INSN_P

      && word_offset != 0)

      && word_offset != 0)

    abort ();

    abort ();

  if (word_length > 32)

  if (word_length > 32)

    abort ();

    abort ();

  /* For architectures with insns smaller than the insn-base-bitsize,

  /* For architectures with insns smaller than the insn-base-bitsize,

     word_length may be too big.  */

     word_length may be too big.  */

  if (cd->min_insn_bitsize < cd->base_insn_bitsize)

  if (cd->min_insn_bitsize < cd->base_insn_bitsize)

    {

    {

      if (word_offset == 0

      if (word_offset == 0

          && word_length > total_length)

          && word_length > total_length)

        word_length = total_length;

        word_length = total_length;

    }

    }

  /* Does the value reside in INSN_VALUE?  */

  /* Does the value reside in INSN_VALUE?  */

  if (word_offset == 0)

  if (word_offset == 0)

    {

    {

      /* Written this way to avoid undefined behaviour.  */

      /* Written this way to avoid undefined behaviour.  */

      CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1;

      CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1;

      if (CGEN_INSN_LSB0_P)

      if (CGEN_INSN_LSB0_P)

        value = insn_value >> ((start + 1) - length);

        value = insn_value >> ((start + 1) - length);

      else

      else

        value = insn_value >> (word_length - (start + length));

        value = insn_value >> (word_length - (start + length));

      value &= mask;

      value &= mask;

      /* sign extend? */

      /* sign extend? */

      if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)

      if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)

          && (value & (1L << (length - 1))))

          && (value & (1L << (length - 1))))

        value |= ~mask;

        value |= ~mask;

    }

    }

#if ! CGEN_INT_INSN_P

#if ! CGEN_INT_INSN_P

  else

  else

    {

    {

      unsigned char *bufp = ex_info->insn_bytes + word_offset / 8;

      unsigned char *bufp = ex_info->insn_bytes + word_offset / 8;

      if (word_length > 32)

      if (word_length > 32)

        abort ();

        abort ();

      if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0)

      if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0)

        return 0;

        return 0;

      value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc);

      value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc);

    }

    }

#endif /* ! CGEN_INT_INSN_P */

#endif /* ! CGEN_INT_INSN_P */

  *valuep = value;

  *valuep = value;

  return 1;

  return 1;

}

}

/* Default insn extractor.

/* Default insn extractor.

   INSN_VALUE is the first base_insn_bitsize bits, translated to host order.

   INSN_VALUE is the first base_insn_bitsize bits, translated to host order.

   The extracted fields are stored in FIELDS.

   The extracted fields are stored in FIELDS.

   EX_INFO is used to handle reading variable length insns.

   EX_INFO is used to handle reading variable length insns.

   Return the length of the insn in bits, or 0 if no match,

   Return the length of the insn in bits, or 0 if no match,

   or -1 if an error occurs fetching data (memory_error_func will have

   or -1 if an error occurs fetching data (memory_error_func will have

   been called).  */

   been called).  */

static int

static int

extract_insn_normal (cd, insn, ex_info, insn_value, fields, pc)

extract_insn_normal (cd, insn, ex_info, insn_value, fields, pc)

     CGEN_CPU_DESC cd;

     CGEN_CPU_DESC cd;

     const CGEN_INSN *insn;

     const CGEN_INSN *insn;

     CGEN_EXTRACT_INFO *ex_info;

     CGEN_EXTRACT_INFO *ex_info;

     CGEN_INSN_INT insn_value;

     CGEN_INSN_INT insn_value;

     CGEN_FIELDS *fields;

     CGEN_FIELDS *fields;

     bfd_vma pc;

     bfd_vma pc;

{

{

  const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);

  const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);

  const unsigned char *syn;

  const unsigned char *syn;

  CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);

  CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);

  CGEN_INIT_EXTRACT (cd);

  CGEN_INIT_EXTRACT (cd);

  for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)

  for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)

    {

    {

      int length;

      int length;

      if (CGEN_SYNTAX_CHAR_P (*syn))

      if (CGEN_SYNTAX_CHAR_P (*syn))

        continue;

        continue;

      length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn),

      length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn),

                                        ex_info, insn_value, fields, pc);

                                        ex_info, insn_value, fields, pc);

      if (length <= 0)

      if (length <= 0)

        return length;

        return length;

    }

    }