218 lines
4.6 KiB
C
218 lines
4.6 KiB
C
/* 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
|