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This commit is contained in:
Stan Shebs 1999-04-16 01:35:26 +00:00
parent cd946cff9e
commit c906108c21
2470 changed files with 976797 additions and 0 deletions
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sim/common/sim-bits.c Normal file
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/* This file is part of the program psim.
Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>
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 _SIM_BITS_C_
#define _SIM_BITS_C_
#include "sim-basics.h"
#include "sim-assert.h"
#include "sim-io.h"
INLINE_SIM_BITS\
(unsigned_word)
LSMASKED (unsigned_word val,
int start,
int stop)
{
/* NOTE - start, stop can wrap */
val &= LSMASK (start, stop);
return val;
}
INLINE_SIM_BITS\
(unsigned_word)
MSMASKED (unsigned_word val,
int start,
int stop)
{
/* NOTE - start, stop can wrap */
val &= MSMASK (start, stop);
return val;
}
INLINE_SIM_BITS\
(unsigned_word)
LSEXTRACTED (unsigned_word val,
int start,
int stop)
{
ASSERT (start >= stop);
#if (WITH_TARGET_WORD_BITSIZE == 64)
return LSEXTRACTED64 (val, start, stop);
#endif
#if (WITH_TARGET_WORD_BITSIZE == 32)
if (stop >= 32)
return 0;
else
{
if (start < 32)
val &= LSMASK (start, 0);
val >>= stop;
return val;
}
#endif
}
INLINE_SIM_BITS\
(unsigned_word)
MSEXTRACTED (unsigned_word val,
int start,
int stop)
{
ASSERT (start <= stop);
#if (WITH_TARGET_WORD_BITSIZE == 64)
return MSEXTRACTED64 (val, start, stop);
#endif
#if (WITH_TARGET_WORD_BITSIZE == 32)
if (stop < 32)
return 0;
else
{
if (start >= 32)
val &= MSMASK (start, 64 - 1);
val >>= (64 - stop - 1);
return val;
}
#endif
}
INLINE_SIM_BITS\
(unsigned_word)
LSINSERTED (unsigned_word val,
int start,
int stop)
{
ASSERT (start >= stop);
#if (WITH_TARGET_WORD_BITSIZE == 64)
return LSINSERTED64 (val, start, stop);
#endif
#if (WITH_TARGET_WORD_BITSIZE == 32)
/* Bit numbers are 63..0, even for 32 bit targets.
On 32 bit targets we ignore 63..32 */
if (stop >= 32)
return 0;
else
{
val <<= stop;
val &= LSMASK (start, stop);
return val;
}
#endif
}
INLINE_SIM_BITS\
(unsigned_word)
MSINSERTED (unsigned_word val,
int start,
int stop)
{
ASSERT (start <= stop);
#if (WITH_TARGET_WORD_BITSIZE == 64)
return MSINSERTED64 (val, start, stop);
#endif
#if (WITH_TARGET_WORD_BITSIZE == 32)
/* Bit numbers are 0..63, even for 32 bit targets.
On 32 bit targets we ignore 0..31. */
if (stop < 32)
return 0;
else
{
val <<= ((64 - 1) - stop);
val &= MSMASK (start, stop);
return val;
}
#endif
}
INLINE_SIM_BITS\
(unsigned_word)
LSSEXT (signed_word val,
int sign_bit)
{
ASSERT (sign_bit < 64);
#if (WITH_TARGET_WORD_BITSIZE == 64)
return LSSEXT64 (val, sign_bit);
#endif
#if (WITH_TARGET_WORD_BITSIZE == 32)
if (sign_bit >= 32)
return val;
else {
val = LSSEXT32 (val, sign_bit);
return val;
}
#endif
}
INLINE_SIM_BITS\
(unsigned_word)
MSSEXT (signed_word val,
int sign_bit)
{
ASSERT (sign_bit < 64);
#if (WITH_TARGET_WORD_BITSIZE == 64)
return MSSEXT64 (val, sign_bit);
#endif
#if (WITH_TARGET_WORD_BITSIZE == 32)
if (sign_bit < 32)
return val;
else {
val = MSSEXT32 (val, sign_bit - 32);
return val;
}
#endif
}
#define N 8
#include "sim-n-bits.h"
#undef N
#define N 16
#include "sim-n-bits.h"
#undef N
#define N 32
#include "sim-n-bits.h"
#undef N
#define N 64
#include "sim-n-bits.h"
#undef N
#endif /* _SIM_BITS_C_ */