Initial revision

1 files changed, 564 insertions, 0 deletions

diff --git a/sim/common/sim-bits.h b/sim/common/sim-bits.h
new file mode 100644
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--- /dev/null
+++ b/sim/common/sim-bits.h
@@ -0,0 +1,564 @@
+/*  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 _SIM_BITS_H_
+#define _SIM_BITS_H_
+
+
+/* Bit manipulation routines:
+
+   Bit numbering: The bits are numbered according to the target ISA's
+   convention.  That being controlled by WITH_TARGET_WORD_MSB.  For
+   the PowerPC (WITH_TARGET_WORD_MSB == 0) the numbering is 0..31
+   while for the MIPS (WITH_TARGET_WORD_MSB == 31) it is 31..0.
+
+   Size convention: Each macro is in three forms - <MACRO>32 which
+   operates in 32bit quantity (bits are numbered 0..31); <MACRO>64
+   which operates using 64bit quantites (and bits are numbered 0..63);
+   and <MACRO> which operates using the bit size of the target
+   architecture (bits are still numbered 0..63), with 32bit
+   architectures ignoring the first 32bits leaving bit 32 as the most
+   significant.
+
+   NB: Use EXTRACTED, MSEXTRACTED and LSEXTRACTED as a guideline for
+   naming.  LSMASK and LSMASKED are wrong.
+
+   BIT*(POS): `*' bit constant with just 1 bit set.
+
+   LSBIT*(OFFSET): `*' bit constant with just 1 bit set - LS bit is
+   zero.
+
+   MSBIT*(OFFSET): `*' bit constant with just 1 bit set - MS bit is
+   zero.
+
+   MASK*(FIRST, LAST): `*' bit constant with bits [FIRST .. LAST]
+   set. The <MACRO> (no size) version permits FIRST >= LAST and
+   generates a wrapped bit mask vis ([0..LAST] | [FIRST..LSB]).
+
+   LSMASK*(FIRST, LAST): Like MASK - LS bit is zero.
+
+   MSMASK*(FIRST, LAST): Like MASK - LS bit is zero.
+
+   MASKED*(VALUE, FIRST, LAST): Masks out all but bits [FIRST
+   .. LAST].
+
+   LSMASKED*(VALUE, FIRST, LAST): Like MASKED - LS bit is zero.
+
+   MSMASKED*(VALUE, FIRST, LAST): Like MASKED - MS bit is zero.
+
+   EXTRACTED*(VALUE, FIRST, LAST): Masks out bits [FIRST .. LAST] but
+   also right shifts the masked value so that bit LAST becomes the
+   least significant (right most).
+
+   LSEXTRACTED*(VALUE, FIRST, LAST): Same as extracted - LS bit is
+   zero.
+
+   MSEXTRACTED*(VALUE, FIRST, LAST): Same as extracted - MS bit is
+   zero.
+
+   SHUFFLED**(VALUE, OLD, NEW): Mask then move a single bit from OLD
+   new NEW.
+
+   MOVED**(VALUE, OLD_FIRST, OLD_LAST, NEW_FIRST, NEW_LAST): Moves
+   things around so that bits OLD_FIRST..OLD_LAST are masked then
+   moved to NEW_FIRST..NEW_LAST.
+
+   INSERTED*(VALUE, FIRST, LAST): Takes VALUE and `inserts' the (LAST
+   - FIRST + 1) least significant bits into bit positions [ FIRST
+   .. LAST ].  This is almost the complement to EXTRACTED.
+
+   IEA_MASKED(SHOULD_MASK, ADDR): Convert the address to the targets
+   natural size.  If in 32bit mode, discard the high 32bits.
+
+   EXTEND*(VALUE): Convert the `*' bit value to the targets natural
+   word size.  Sign extend the value if needed.
+
+   ALIGN_*(VALUE): Round the value upwards so that it is aligned to a
+   `_*' byte boundary.
+
+   FLOOR_*(VALUE): Truncate the value so that it is aligned to a `_*'
+   byte boundary.
+
+   ROT*(VALUE, NR_BITS): Return the `*' bit VALUE rotated by NR_BITS
+   right (positive) or left (negative).
+
+   ROTL*(VALUE, NR_BITS): Return the `*' bit value rotated by NR_BITS
+   left.  0 <= NR_BITS <= `*'.
+
+   ROTR*(VALUE, NR_BITS): Return the `*' bit value rotated by NR_BITS
+   right.  0 <= NR_BITS <= N.
+
+   SEXT*(VALUE, SIGN_BIT): Treat SIGN_BIT as VALUEs sign, extend it ti
+   `*' bits.
+
+   Note: Only the BIT* and MASK* macros return a constant that can be
+   used in variable declarations.
+
+   */
+
+
+/* compute the number of bits between START and STOP */
+
+#if (WITH_TARGET_WORD_MSB == 0)
+#define _MAKE_WIDTH(START, STOP) (STOP - START + 1)
+#else
+#define _MAKE_WIDTH(START, STOP) (START - STOP + 1)
+#endif
+
+
+
+/* compute the number shifts required to move a bit between LSB (MSB)
+   and POS */
+
+#if (WITH_TARGET_WORD_MSB == 0)
+#define _LSB_SHIFT(WIDTH, POS) (WIDTH - 1 - POS)
+#else
+#define _LSB_SHIFT(WIDTH, POS) (POS)
+#endif
+
+#if (WITH_TARGET_WORD_MSB == 0)
+#define _MSB_SHIFT(WIDTH, POS) (POS)
+#else
+#define _MSB_SHIFT(WIDTH, POS) (WIDTH - 1 - POS)
+#endif
+
+
+/* compute the absolute bit position given the OFFSET from the MSB(LSB)
+   NB: _MAKE_xxx_POS (WIDTH, _MAKE_xxx_SHIFT (WIDTH, POS)) == POS */
+
+#if (WITH_TARGET_WORD_MSB == 0)
+#define _MSB_POS(WIDTH, SHIFT) (SHIFT)
+#else
+#define _MSB_POS(WIDTH, SHIFT) (WIDTH - 1 - SHIFT)
+#endif
+
+#if (WITH_TARGET_WORD_MSB == 0)
+#define _LSB_POS(WIDTH, SHIFT) (WIDTH - 1 - SHIFT)
+#else
+#define _LSB_POS(WIDTH, SHIFT) (SHIFT)
+#endif
+
+
+/* convert a 64 bit position into a corresponding 32bit position. MSB
+   pos handles the posibility that the bit lies beyond the 32bit
+   boundary */
+
+#if (WITH_TARGET_WORD_MSB == 0)
+#define _MSB_32(START, STOP) (START <= STOP \
+			      ? (START < 32 ? 0 : START - 32) \
+			      : (STOP < 32 ? 0 : STOP - 32))
+#else
+#define _MSB_32(START, STOP) (START >= STOP \
+			      ? (START >= 32 ? 31 : START) \
+			      : (STOP >= 32 ? 31 : 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))
+#else
+#define _LSB_32(START, STOP) (START >= STOP \
+			      ? (STOP >= 32 ? 31 : STOP) \
+			      : (START >= 32 ? 31 : START))
+#endif
+
+#if (WITH_TARGET_WORD_MSB == 0)
+#define _MSB(START, STOP) (START <= STOP ? START : STOP)
+#else
+#define _MSB(START, STOP) (START >= STOP ? START : STOP)
+#endif
+
+#if (WITH_TARGET_WORD_MSB == 0)
+#define _LSB(START, STOP) (START <= STOP ? STOP : START)
+#else
+#define _LSB(START, STOP) (START >= STOP ? STOP : START)
+#endif
+
+
+/* LS/MS Bit operations */
+
+#define LSBIT8(POS)  ((unsigned8) 1 << (POS))
+#define LSBIT16(POS) ((unsigned16)1 << (POS))
+#define LSBIT32(POS) ((unsigned32)1 << (POS))
+#define LSBIT64(POS) ((unsigned64)1 << (POS))
+
+#if (WITH_TARGET_WORD_BITSIZE == 64)
+#define LSBIT(POS) LSBIT64 (POS)
+#else
+#define LSBIT(POS) ((unsigned32)((POS) >= 32 \
+		                 ? 0 \
+			         : (1 << ((POS) >= 32 ? 0 : (POS)))))
+#endif
+
+
+#define MSBIT8(POS)  ((unsigned8) 1 << ( 8 - 1 - (POS)))
+#define MSBIT16(POS) ((unsigned16)1 << (16 - 1 - (POS)))
+#define MSBIT32(POS) ((unsigned32)1 << (32 - 1 - (POS)))
+#define MSBIT64(POS) ((unsigned64)1 << (64 - 1 - (POS)))
+
+#if (WITH_TARGET_WORD_BITSIZE == 64)
+#define MSBIT(POS) MSBIT64 (POS)
+#else
+#define MSBIT(POS) ((unsigned32)((POS) < 32 \
+		                 ? 0 \
+		                 : (1 << ((POS) < 32 ? 0 : (64 - 1) - (POS)))))
+#endif
+
+
+/* Bit operations */
+
+#define BIT4(POS)  (1 << _LSB_SHIFT (4, (POS)))
+#define BIT5(POS)  (1 << _LSB_SHIFT (5, (POS)))
+#define BIT10(POS) (1 << _LSB_SHIFT (10, (POS)))
+
+#if (WITH_TARGET_WORD_MSB == 0)
+#define BIT8  MSBIT8
+#define BIT16 MSBIT16
+#define BIT32 MSBIT32
+#define BIT64 MSBIT64
+#define BIT   MSBIT
+#else
+#define BIT8  LSBIT8
+#define BIT16 LSBIT16
+#define BIT32 LSBIT32
+#define BIT64 LSBIT64
+#define BIT   LSBIT
+#endif
+
+
+
+/* multi bit mask */
+
+/* 111111 -> mmll11 -> mm11ll */
+#define _MASKn(WIDTH, START, STOP) (((unsigned##WIDTH)(-1) \
+				     >> (_MSB_SHIFT (WIDTH, START) \
+					 + _LSB_SHIFT (WIDTH, STOP))) \
+				    << _LSB_SHIFT (WIDTH, STOP))
+
+#if (WITH_TARGET_WORD_MSB == 0)
+#define _POS_LE(START, STOP) (START <= STOP)
+#else
+#define _POS_LE(START, STOP) (STOP <= START)
+#endif
+
+#if (WITH_TARGET_WORD_BITSIZE == 64)
+#define MASK(START, STOP) \
+     (_POS_LE ((START), (STOP)) \
+      ? _MASKn(64, \
+	       _MSB ((START), (STOP)), \
+	       _LSB ((START), (STOP)) ) \
+      : (_MASKn(64, _MSB_POS (64, 0), (STOP)) \
+	 | _MASKn(64, (START), _LSB_POS (64, 0))))
+#endif
+#if (WITH_TARGET_WORD_BITSIZE == 32)
+#define MASK(START, STOP) \
+     (_POS_LE ((START), (STOP)) \
+      ? (_POS_LE ((STOP), _MSB_POS (64, 31)) \
+	 ? 0 \
+	 : _MASKn (32, \
+		   _MSB_32 ((START), (STOP)), \
+		   _LSB_32 ((START), (STOP)))) \
+      : (_MASKn (32, \
+		 _LSB_32 ((START), (STOP)), \
+		 _LSB_POS (32, 0)) \
+	 | (_POS_LE ((STOP), _MSB_POS (64, 31)) \
+	    ? 0 \
+	    : _MASKn (32, \
+		      _MSB_POS (32, 0), \
+		      _MSB_32 ((START), (STOP))))))
+#endif
+#if !defined (MASK)
+#error "MASK never undefined"
+#endif
+
+
+/* Multi-bit mask on least significant bits */
+
+#define _LSMASKn(WIDTH, FIRST, LAST) _MASKn (WIDTH, \
+					     _LSB_POS (WIDTH, FIRST), \
+					     _LSB_POS (WIDTH, LAST))
+
+#define LSMASK8(FIRST, LAST)   _LSMASKn ( 8, (FIRST), (LAST))
+#define LSMASK16(FIRST, LAST)  _LSMASKn (16, (FIRST), (LAST))
+#define LSMASK32(FIRST, LAST)  _LSMASKn (32, (FIRST), (LAST))
+#define LSMASK64(FIRST, LAST)  _LSMASKn (64, (FIRST), (LAST))
+
+#define LSMASK(FIRST, LAST) (MASK (_LSB_POS (64, FIRST), _LSB_POS (64, LAST)))
+
+
+/* Multi-bit mask on most significant bits */
+
+#define _MSMASKn(WIDTH, FIRST, LAST) _MASKn (WIDTH, \
+					     _MSB_POS (WIDTH, FIRST), \
+					     _MSB_POS (WIDTH, LAST))
+
+#define MSMASK8(FIRST, LAST)  _MSMASKn ( 8, (FIRST), (LAST))
+#define MSMASK16(FIRST, LAST) _MSMASKn (16, (FIRST), (LAST))
+#define MSMASK32(FIRST, LAST) _MSMASKn (32, (FIRST), (LAST))
+#define MSMASK64(FIRST, LAST) _MSMASKn (64, (FIRST), (LAST))
+
+#define MSMASK(FIRST, LAST) (MASK (_MSB_POS (64, FIRST), _MSB_POS (64, LAST)))
+
+
+
+#if (WITH_TARGET_WORD_MSB == 0)
+#define MASK8  MSMASK8
+#define MASK16 MSMASK16
+#define MASK32 MSMASK32
+#define MASK64 MSMASK64
+#else
+#define MASK8  LSMASK8
+#define MASK16 LSMASK16
+#define MASK32 LSMASK32
+#define MASK64 LSMASK64
+#endif
+
+
+
+/* mask the required bits, leaving them in place */
+
+INLINE_SIM_BITS(unsigned8)  LSMASKED8  (unsigned8  word, int first, int last);
+INLINE_SIM_BITS(unsigned16) LSMASKED16 (unsigned16 word, int first, int last);
+INLINE_SIM_BITS(unsigned32) LSMASKED32 (unsigned32 word, int first, int last);
+INLINE_SIM_BITS(unsigned64) LSMASKED64 (unsigned64 word, int first, int last);
+
+INLINE_SIM_BITS(unsigned_word) LSMASKED (unsigned_word word, int first, int last);
+
+INLINE_SIM_BITS(unsigned8)  MSMASKED8  (unsigned8  word, int first, int last);
+INLINE_SIM_BITS(unsigned16) MSMASKED16 (unsigned16 word, int first, int last);
+INLINE_SIM_BITS(unsigned32) MSMASKED32 (unsigned32 word, int first, int last);
+INLINE_SIM_BITS(unsigned64) MSMASKED64 (unsigned64 word, int first, int last);
+
+INLINE_SIM_BITS(unsigned_word) MSMASKED (unsigned_word word, int first, int last);
+
+#if (WITH_TARGET_WORD_MSB == 0)
+#define MASKED8  MSMASKED8
+#define MASKED16 MSMASKED16
+#define MASKED32 MSMASKED32
+#define MASKED64 MSMASKED64
+#define MASKED   MSMASKED
+#else
+#define MASKED8  LSMASKED8
+#define MASKED16 LSMASKED16
+#define MASKED32 LSMASKED32
+#define MASKED64 LSMASKED64
+#define MASKED LSMASKED
+#endif
+
+
+
+/* extract the required bits aligning them with the lsb */
+
+INLINE_SIM_BITS(unsigned8)  LSEXTRACTED8  (unsigned8  val, int start, int stop);
+INLINE_SIM_BITS(unsigned16) LSEXTRACTED16 (unsigned16 val, int start, int stop);
+INLINE_SIM_BITS(unsigned32) LSEXTRACTED32 (unsigned32 val, int start, int stop);
+INLINE_SIM_BITS(unsigned64) LSEXTRACTED64 (unsigned64 val, int start, int stop);
+
+INLINE_SIM_BITS(unsigned_word) LSEXTRACTED (unsigned_word val, int start, int stop);
+
+INLINE_SIM_BITS(unsigned8)  MSEXTRACTED8  (unsigned8  val, int start, int stop);
+INLINE_SIM_BITS(unsigned16) MSEXTRACTED16 (unsigned16 val, int start, int stop);
+INLINE_SIM_BITS(unsigned32) MSEXTRACTED32 (unsigned32 val, int start, int stop);
+INLINE_SIM_BITS(unsigned64) MSEXTRACTED64 (unsigned64 val, int start, int stop);
+
+INLINE_SIM_BITS(unsigned_word) MSEXTRACTED (unsigned_word val, int start, int stop);
+
+#if (WITH_TARGET_WORD_MSB == 0)
+#define EXTRACTED8  MSEXTRACTED8
+#define EXTRACTED16 MSEXTRACTED16
+#define EXTRACTED32 MSEXTRACTED32
+#define EXTRACTED64 MSEXTRACTED64
+#define EXTRACTED   MSEXTRACTED
+#else
+#define EXTRACTED8  LSEXTRACTED8
+#define EXTRACTED16 LSEXTRACTED16
+#define EXTRACTED32 LSEXTRACTED32
+#define EXTRACTED64 LSEXTRACTED64
+#define EXTRACTED   LSEXTRACTED
+#endif
+
+
+
+/* move a single bit around */
+/* NB: the wierdness (N>O?N-O:0) is to stop a warning from GCC */
+#define _SHUFFLEDn(N, WORD, OLD, NEW) \
+((OLD) < (NEW) \
+ ? (((unsigned##N)(WORD) \
+     >> (((NEW) > (OLD)) ? ((NEW) - (OLD)) : 0)) \
+    & MASK32((NEW), (NEW))) \
+ : (((unsigned##N)(WORD) \
+     << (((OLD) > (NEW)) ? ((OLD) - (NEW)) : 0)) \
+    & MASK32((NEW), (NEW))))
+
+#define SHUFFLED32(WORD, OLD, NEW) _SHUFFLEDn (32, WORD, OLD, NEW)
+#define SHUFFLED64(WORD, OLD, NEW) _SHUFFLEDn (64, WORD, OLD, NEW)
+
+#define SHUFFLED(WORD, OLD, NEW) _SHUFFLEDn (_word, WORD, OLD, NEW)
+
+
+/* Insert a group of bits into a bit position */
+
+INLINE_SIM_BITS(unsigned8)  LSINSERTED8  (unsigned8  val, int start, int stop);
+INLINE_SIM_BITS(unsigned16) LSINSERTED16 (unsigned16 val, int start, int stop);
+INLINE_SIM_BITS(unsigned32) LSINSERTED32 (unsigned32 val, int start, int stop);
+INLINE_SIM_BITS(unsigned64) LSINSERTED64 (unsigned64 val, int start, int stop);
+INLINE_SIM_BITS(unsigned_word) LSINSERTED (unsigned_word val, int start, int stop);
+
+INLINE_SIM_BITS(unsigned8)  MSINSERTED8  (unsigned8  val, int start, int stop);
+INLINE_SIM_BITS(unsigned16) MSINSERTED16 (unsigned16 val, int start, int stop);
+INLINE_SIM_BITS(unsigned32) MSINSERTED32 (unsigned32 val, int start, int stop);
+INLINE_SIM_BITS(unsigned64) MSINSERTED64 (unsigned64 val, int start, int stop);
+INLINE_SIM_BITS(unsigned_word) MSINSERTED (unsigned_word val, int start, int stop);
+
+#if (WITH_TARGET_WORD_MSB == 0)
+#define INSERTED8  MSINSERTED8
+#define INSERTED16 MSINSERTED16
+#define INSERTED32 MSINSERTED32
+#define INSERTED64 MSINSERTED64
+#define INSERTED   MSINSERTED
+#else
+#define INSERTED8  LSINSERTED8
+#define INSERTED16 LSINSERTED16
+#define INSERTED32 LSINSERTED32
+#define INSERTED64 LSINSERTED64
+#define INSERTED   LSINSERTED
+#endif
+
+
+
+/* MOVE bits from one loc to another (combination of extract/insert) */
+
+#define MOVED8(VAL,OH,OL,NH,NL)  INSERTED8 (EXTRACTED8 ((VAL), OH, OL), NH, NL)
+#define MOVED16(VAL,OH,OL,NH,NL) INSERTED16(EXTRACTED16((VAL), OH, OL), NH, NL)
+#define MOVED32(VAL,OH,OL,NH,NL) INSERTED32(EXTRACTED32((VAL), OH, OL), NH, NL)
+#define MOVED64(VAL,OH,OL,NH,NL) INSERTED64(EXTRACTED64((VAL), OH, OL), NH, NL)
+#define MOVED(VAL,OH,OL,NH,NL)   INSERTED  (EXTRACTED  ((VAL), OH, OL), NH, NL)
+
+
+
+/* Sign extend the quantity to the targets natural word size */
+
+#define EXTEND4(X)  (LSSEXT ((X), 3))
+#define EXTEND5(X)  (LSSEXT ((X), 4))
+#define EXTEND8(X)  ((signed_word)(signed8)(X))
+#define EXTEND11(X)  (LSSEXT ((X), 10))
+#define EXTEND15(X)  (LSSEXT ((X), 14))
+#define EXTEND16(X) ((signed_word)(signed16)(X))
+#define EXTEND24(X)  (LSSEXT ((X), 23))
+#define EXTEND32(X) ((signed_word)(signed32)(X))
+#define EXTEND64(X) ((signed_word)(signed64)(X))
+
+/* depending on MODE return a 64bit or 32bit (sign extended) value */
+#if (WITH_TARGET_WORD_BITSIZE == 64)
+#define EXTENDED(X)     ((signed64)(signed32)(X))
+#endif
+#if (WITH_TARGET_WORD_BITSIZE == 32)
+#define EXTENDED(X)     (X)
+#endif
+
+
+/* memory alignment macro's */
+#define _ALIGNa(A,X)  (((X) + ((A) - 1)) & ~((A) - 1))
+#define _FLOORa(A,X)  ((X) & ~((A) - 1))
+
+#define ALIGN_8(X)	_ALIGNa (8, X)
+#define ALIGN_16(X)	_ALIGNa (16, X)
+
+#define ALIGN_PAGE(X)	_ALIGNa (0x1000, X)
+#define FLOOR_PAGE(X)   ((X) & ~(0x1000 - 1))
+
+
+/* bit bliting macro's */
+#define BLIT32(V, POS, BIT) \
+do { \
+  if (BIT) \
+    V |= BIT32 (POS); \
+  else \
+    V &= ~BIT32 (POS); \
+} while (0)
+#define MBLIT32(V, LO, HI, VAL) \
+do { \
+  (V) = (((V) & ~MASK32 ((LO), (HI))) \
+	 | INSERTED32 (VAL, LO, HI)); \
+} while (0)
+
+
+
+/* some rotate functions.  The generic macro's ROT, ROTL, ROTR are
+   intentionally omited. */
+
+
+INLINE_SIM_BITS(unsigned8)  ROT8  (unsigned8  val, int shift);
+INLINE_SIM_BITS(unsigned16) ROT16 (unsigned16 val, int shift);
+INLINE_SIM_BITS(unsigned32) ROT32 (unsigned32 val, int shift);
+INLINE_SIM_BITS(unsigned64) ROT64 (unsigned64 val, int shift);
+
+
+INLINE_SIM_BITS(unsigned8)  ROTL8  (unsigned8  val, int shift);
+INLINE_SIM_BITS(unsigned16) ROTL16 (unsigned16 val, int shift);
+INLINE_SIM_BITS(unsigned32) ROTL32 (unsigned32 val, int shift);
+INLINE_SIM_BITS(unsigned64) ROTL64 (unsigned64 val, int shift);
+
+
+INLINE_SIM_BITS(unsigned8)  ROTR8  (unsigned8  val, int shift);
+INLINE_SIM_BITS(unsigned16) ROTR16 (unsigned16 val, int shift);
+INLINE_SIM_BITS(unsigned32) ROTR32 (unsigned32 val, int shift);
+INLINE_SIM_BITS(unsigned64) ROTR64 (unsigned64 val, int shift);
+
+
+
+/* Sign extension operations */
+
+INLINE_SIM_BITS(unsigned8)  LSSEXT8  (signed8  val, int sign_bit);
+INLINE_SIM_BITS(unsigned16) LSSEXT16 (signed16 val, int sign_bit);
+INLINE_SIM_BITS(unsigned32) LSSEXT32 (signed32 val, int sign_bit);
+INLINE_SIM_BITS(unsigned64) LSSEXT64 (signed64 val, int sign_bit);
+INLINE_SIM_BITS(unsigned_word) LSSEXT (signed_word val, int sign_bit);
+
+INLINE_SIM_BITS(unsigned8)  MSSEXT8  (signed8  val, int sign_bit);
+INLINE_SIM_BITS(unsigned16) MSSEXT16 (signed16 val, int sign_bit);
+INLINE_SIM_BITS(unsigned32) MSSEXT32 (signed32 val, int sign_bit);
+INLINE_SIM_BITS(unsigned64) MSSEXT64 (signed64 val, int sign_bit);
+INLINE_SIM_BITS(unsigned_word) MSSEXT (signed_word val, int sign_bit);
+
+#if (WITH_TARGET_WORD_MSB == 0)
+#define SEXT8  MSSEXT8
+#define SEXT16 MSSEXT16
+#define SEXT32 MSSEXT32
+#define SEXT64 MSSEXT64
+#define SEXT   MSSEXT
+#else
+#define SEXT8  LSSEXT8
+#define SEXT16 LSSEXT16
+#define SEXT32 LSSEXT32
+#define SEXT64 LSSEXT64
+#define SEXT   LSSEXT
+#endif
+
+
+
+#if H_REVEALS_MODULE_P (SIM_BITS_INLINE)
+#include "sim-bits.c"
+#endif
+
+#endif /* _SIM_BITS_H_ */