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From 2000-06-25 Stephane Carrez <Stephane.Carrez@worldnet.fr>:

Browse Source 
* sim-bits.h (_MSB_16, _LSB_16): Define for 16-bit targets.
(MASK, LSBIT, MSBIT): Likewise and use _MSB_16 and _LSB_16.
(EXTENDED): Define for 16-bit word size.
* sim-bits.c (LSEXTRACTED, MSEXTRACTED, LSINSERTED,
MSINSERTED, LSSEXT, MSSEXT): Implement for 16-bit word size.
* sim-types.h: Added support for 16-bit targets.
This commit is contained in:
Andrew Cagney 2000-07-27 11:07:01 +00:00
parent 0a17cd5944
commit 3c765a5497
4 changed files with 126 additions and 2 deletions
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10
sim/common/ChangeLog
View File

@ -1,3 +1,13 @@
Thu Jul 27 20:37:47 2000 Andrew Cagney <cagney@b1.cygnus.com>
From 2000-06-25 Stephane Carrez <Stephane.Carrez@worldnet.fr>:
* sim-bits.h (_MSB_16, _LSB_16): Define for 16-bit targets.
(MASK, LSBIT, MSBIT): Likewise and use _MSB_16 and _LSB_16.
(EXTENDED): Define for 16-bit word size.
* sim-bits.c (LSEXTRACTED, MSEXTRACTED, LSINSERTED,
MSINSERTED, LSSEXT, MSSEXT): Implement for 16-bit word size.
* sim-types.h: Added support for 16-bit targets.
2000-06-23 Frank Ch. Eigler <fche@redhat.com>
* cgen-trace.h (TRACE_USEFUL_MASK): Remove TRACE_EVENTS_IDX.

62
sim/common/sim-bits.c
View File

@ -72,6 +72,17 @@ LSEXTRACTED (unsigned_word val,
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
}
@ -96,6 +107,17 @@ MSEXTRACTED (unsigned_word val,
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
}
@ -121,6 +143,18 @@ LSINSERTED (unsigned_word val,
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\
@ -145,6 +179,18 @@ MSINSERTED (unsigned_word val,
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
}
@ -166,6 +212,14 @@ LSSEXT (signed_word val,
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\
@ -185,6 +239,14 @@ MSSEXT (signed_word val,
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
}

48
sim/common/sim-bits.h
View File

@ -166,20 +166,32 @@
#define _MSB_32(START, STOP) (START <= STOP \
? (START < 32 ? 0 : START - 32) \
: (STOP < 32 ? 0 : STOP - 32))
#define _MSB_16(START, STOP) (START <= STOP \
? (START < 48 ? 0 : START - 48) \
: (STOP < 48 ? 0 : STOP - 48))
#else
#define _MSB_32(START, STOP) (START >= STOP \
? (START >= 32 ? 31 : START) \
: (STOP >= 32 ? 31 : STOP))
#define _MSB_16(START, STOP) (START >= STOP \
? (START >= 16 ? 15 : START) \
: (STOP >= 16 ? 15 : STOP))
#endif
#if (WITH_TARGET_WORD_MSB == 0)
#define _LSB_32(START, STOP) (START <= STOP \
? (STOP < 32 ? 0 : STOP - 32) \
: (START < 32 ? 0 : START - 32))
#define _LSB_16(START, STOP) (START <= STOP \
? (STOP < 48 ? 0 : STOP - 48) \
: (START < 48 ? 0 : START - 48))
#else
#define _LSB_32(START, STOP) (START >= STOP \
? (STOP >= 32 ? 31 : STOP) \
: (START >= 32 ? 31 : START))
#define _LSB_16(START, STOP) (START >= STOP \
? (STOP >= 16 ? 15 : STOP) \
: (START >= 16 ? 15 : START))
#endif
#if (WITH_TARGET_WORD_MSB == 0)
@ -204,11 +216,17 @@
#if (WITH_TARGET_WORD_BITSIZE == 64)
#define LSBIT(POS) LSBIT64 (POS)
#else
#endif
#if (WITH_TARGET_WORD_BITSIZE == 32)
#define LSBIT(POS) ((unsigned32)((POS) >= 32 \
? 0 \
: (1 << ((POS) >= 32 ? 0 : (POS)))))
#endif
#if (WITH_TARGET_WORD_BITSIZE == 16)
#define LSBIT(POS) ((unsigned16)((POS) >= 16 \
? 0 \
: (1 << ((POS) >= 16 ? 0 : (POS)))))
#endif
#define MSBIT8(POS) ((unsigned8) 1 << ( 8 - 1 - (POS)))
@ -218,11 +236,17 @@
#if (WITH_TARGET_WORD_BITSIZE == 64)
#define MSBIT(POS) MSBIT64 (POS)
#else
#endif
#if (WITH_TARGET_WORD_BITSIZE == 32)
#define MSBIT(POS) ((unsigned32)((POS) < 32 \
? 0 \
: (1 << ((POS) < 32 ? 0 : (64 - 1) - (POS)))))
#endif
#if (WITH_TARGET_WORD_BITSIZE == 16)
#define MSBIT(POS) ((unsigned16)((POS) < 48 \
? 0 \
: (1 << ((POS) < 48 ? 0 : (64 - 1) - (POS)))))
#endif
/* Bit operations */
@ -287,6 +311,23 @@
_MSB_POS (32, 0), \
_MSB_32 ((START), (STOP))))))
#endif
#if (WITH_TARGET_WORD_BITSIZE == 16)
#define MASK(START, STOP) \
(_POS_LE ((START), (STOP)) \
? (_POS_LE ((STOP), _MSB_POS (64, 15)) \
? 0 \
: _MASKn (16, \
_MSB_16 ((START), (STOP)), \
_LSB_16 ((START), (STOP)))) \
: (_MASKn (16, \
_LSB_16 ((START), (STOP)), \
_LSB_POS (16, 0)) \
| (_POS_LE ((STOP), _MSB_POS (64, 15)) \
? 0 \
: _MASKn (16, \
_MSB_POS (16, 0), \
_MSB_16 ((START), (STOP))))))
#endif
#if !defined (MASK)
#error "MASK never undefined"
#endif
@ -475,6 +516,9 @@ INLINE_SIM_BITS(unsigned_word) MSINSERTED (unsigned_word val, int start, int sto
#if (WITH_TARGET_WORD_BITSIZE == 32)
#define EXTENDED(X) (X)
#endif
#if (WITH_TARGET_WORD_BITSIZE == 16)
#define EXTENDED(X) (X)
#endif
/* memory alignment macro's */

8
sim/common/sim-types.h
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@ -164,6 +164,10 @@ typedef signed64 signed_word;
typedef unsigned32 unsigned_word;
typedef signed32 signed_word;
#endif
#if (WITH_TARGET_WORD_BITSIZE == 16)
typedef unsigned16 unsigned_word;
typedef signed16 signed_word;
#endif
/* Other instructions */
@ -175,6 +179,10 @@ typedef signed64 signed_address;
typedef unsigned32 unsigned_address;
typedef signed32 signed_address;
#endif
#if (WITH_TARGET_ADDRESS_BITSIZE == 16)
typedef unsigned16 unsigned_address;
typedef signed16 signed_address;
#endif
typedef unsigned_address address_word;