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/* The common simulator framework for GDB, the GNU Debugger.
Copyright 2002-2021 Free Software Foundation, Inc.
Contributed by Andrew Cagney and Red Hat.
This file is part of GDB.
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 3 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, see <http://www.gnu.org/licenses/>. */
#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
#if (WITH_TARGET_WORD_BITSIZE == 16)
if (stop >= 16)
return 0;
else
{
if (start < 16)
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
#if (WITH_TARGET_WORD_BITSIZE == 16)
if (stop < 16)
return 0;
else
{
if (start >= 16)
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
#if (WITH_TARGET_WORD_BITSIZE == 16)
/* Bit numbers are 63..0, even for 16 bit targets.
On 16 bit targets we ignore 63..16 */
if (stop >= 16)
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
#if (WITH_TARGET_WORD_BITSIZE == 16)
/* Bit numbers are 0..63, even for 16 bit targets.
On 16 bit targets we ignore 0..47. */
if (stop < 32 + 16)
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
#if (WITH_TARGET_WORD_BITSIZE == 16)
if (sign_bit >= 16)
return val;
else {
val = LSSEXT16 (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
#if (WITH_TARGET_WORD_BITSIZE == 16)
if (sign_bit < 32 + 16)
return val;
else {
val = MSSEXT16 (val, sign_bit - 32 - 16);
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_ */
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