Subversion Repositories or1k

/*  This file is part of the program psim.

    Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>

    Copyright (C) 1997, Free Software Foundation, Inc.

    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.

    */

#ifndef N

#error "N must be #defined"

#endif

#include "symcat.h"

#if defined(__STDC__) && defined(signed)

/* If signed were defined to be say __signed (ie, some versions of Linux),

   then the signedN macro would not work correctly.  If we have a standard

   compiler, we have signed.  */

#undef signed

#endif

/* NOTE: See end of file for #undef */

#define unsignedN XCONCAT2(unsigned,N)

#define signedN XCONCAT2(signed,N)

#define LSMASKn XCONCAT2(LSMASK,N)

#define MSMASKn XCONCAT2(MSMASK,N)

#define LSMASKEDn XCONCAT2(LSMASKED,N)

#define MSMASKEDn XCONCAT2(MSMASKED,N)

#define LSEXTRACTEDn XCONCAT2(LSEXTRACTED,N)

#define MSEXTRACTEDn XCONCAT2(MSEXTRACTED,N)

#define LSINSERTEDn XCONCAT2(LSINSERTED,N)

#define MSINSERTEDn XCONCAT2(MSINSERTED,N)

#define ROTn XCONCAT2(ROT,N)

#define ROTLn XCONCAT2(ROTL,N)

#define ROTRn XCONCAT2(ROTR,N)

#define MSSEXTn XCONCAT2(MSSEXT,N)

#define LSSEXTn XCONCAT2(LSSEXT,N)

/* TAGS: LSMASKED16 LSMASKED32 LSMASKED64 */

INLINE_SIM_BITS\

(unsignedN)

LSMASKEDn (unsignedN word,

           int start,

           int stop)

{

  word &= LSMASKn (start, stop);

  return word;

}

/* TAGS: MSMASKED16 MSMASKED32 MSMASKED64 */

INLINE_SIM_BITS\

(unsignedN)

MSMASKEDn (unsignedN word,

           int start,

           int stop)

{

  word &= MSMASKn (start, stop);

  return word;

}

/* TAGS: LSEXTRACTED16 LSEXTRACTED32 LSEXTRACTED64 */

INLINE_SIM_BITS\

(unsignedN)

LSEXTRACTEDn (unsignedN val,

              int start,

              int stop)

{

  val <<= (N - 1 - start); /* drop high bits */

  val >>= (N - 1 - start) + (stop); /* drop low bits */

  return val;

}

/* TAGS: MSEXTRACTED16 MSEXTRACTED32 MSEXTRACTED64 */

INLINE_SIM_BITS\

(unsignedN)

MSEXTRACTEDn (unsignedN val,

              int start,

              int stop)

{

  val <<= (start); /* drop high bits */

  val >>= (start) + (N - 1 - stop); /* drop low bits */

  return val;

}

/* TAGS: LSINSERTED16 LSINSERTED32 LSINSERTED64 */

INLINE_SIM_BITS\

(unsignedN)

LSINSERTEDn (unsignedN val,

             int start,

             int stop)

{

  val <<= stop;

  val &= LSMASKn (start, stop);

  return val;

}

/* TAGS: MSINSERTED16 MSINSERTED32 MSINSERTED64 */

INLINE_SIM_BITS\

(unsignedN)

MSINSERTEDn (unsignedN val,

             int start,

             int stop)

{

  val <<= ((N - 1) - stop);

  val &= MSMASKn (start, stop);

  return val;

}

/* TAGS: ROT16 ROT32 ROT64 */

INLINE_SIM_BITS\

(unsignedN)

ROTn (unsignedN val,

      int shift)

{

  if (shift > 0)

    return ROTRn (val, shift);

  else if (shift < 0)

    return ROTLn (val, -shift);

  else

    return val;

}

/* TAGS: ROTL16 ROTL32 ROTL64 */

INLINE_SIM_BITS\

(unsignedN)

ROTLn (unsignedN val,

       int shift)

{

  unsignedN result;

  ASSERT (shift <= N);

  result = (((val) << (shift)) | ((val) >> ((N)-(shift))));

  return result;

}

/* TAGS: ROTR16 ROTR32 ROTR64 */

INLINE_SIM_BITS\

(unsignedN)

ROTRn (unsignedN val,

       int shift)

{

  unsignedN result;

  ASSERT (shift <= N);

  result = (((val) >> (shift)) | ((val) << ((N)-(shift))));

  return result;

}

/* TAGS: LSSEXT16 LSSEXT32 LSSEXT64 */

INLINE_SIM_BITS\

(unsignedN)

LSSEXTn (signedN val,

         int sign_bit)

{

  int shift;

  /* make the sign-bit most significant and then smear it back into

     position */

  ASSERT (sign_bit < N);

  shift = ((N - 1) - sign_bit);

  val <<= shift;

  val >>= shift;

  return val;

}

/* TAGS: MSSEXT16 MSSEXT32 MSSEXT64 */

INLINE_SIM_BITS\

(unsignedN)

MSSEXTn (signedN val,

         int sign_bit)

{

  /* make the sign-bit most significant and then smear it back into

     position */

  ASSERT (sign_bit < N);

  val <<= sign_bit;

  val >>= sign_bit;

  return val;

}

/* NOTE: See start of file for #define */

#undef LSSEXTn

#undef MSSEXTn

#undef ROTLn

#undef ROTRn

#undef ROTn

#undef LSINSERTEDn

#undef MSINSERTEDn

#undef LSEXTRACTEDn

#undef MSEXTRACTEDn

#undef LSMASKEDn

#undef LSMASKn

#undef MSMASKEDn

#undef MSMASKn

#undef signedN

#undef unsignedN