summaryrefslogtreecommitdiff
path: root/sim/ppc/bits.h
diff options
context:
space:
mode:
Diffstat (limited to 'sim/ppc/bits.h')
-rw-r--r--sim/ppc/bits.h257
1 files changed, 0 insertions, 257 deletions
diff --git a/sim/ppc/bits.h b/sim/ppc/bits.h
deleted file mode 100644
index 06898e07e9b..00000000000
--- a/sim/ppc/bits.h
+++ /dev/null
@@ -1,257 +0,0 @@
-/* This file is part of the program psim.
-
- Copyright (C) 1994-1995, 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 _BITS_H_
-#define _BITS_H_
-
-
-/* bit manipulation routines:
-
- Bit numbering: The bits are numbered according to the PowerPC
- convention - the left most (or most significant) is bit 0 while the
- right most (least significant) is bit 1.
-
- 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..64);
- 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 having bit 32 as the most
- significant.
-
- BIT*(POS): Quantity with just 1 bit set.
-
- MASK*(FIRST, LAST): Create a constant bit mask of the specified
- size with bits [FIRST .. LAST] set.
-
- MASKED*(VALUE, FIRST, LAST): Masks out all but bits [FIRST
- .. LAST].
-
- 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).
-
- 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.
-
- EXTENDED(VALUE): Convert VALUE (32bits of it) to the targets
- natural size. If in 64bit mode, sign extend the value.
-
- ALIGN_*(VALUE): Round upwards the value so that it is aligned.
-
- FLOOR_*(VALUE): Truncate the value so that it is aligned.
-
- ROTL*(VALUE, NR_BITS): Return the value rotated by NR_BITS
-
- */
-
-#define _MAKE_SHIFT(WIDTH, pos) ((WIDTH) - 1 - (pos))
-
-
-/* MakeBit */
-#define _BITn(WIDTH, pos) (((natural##WIDTH)(1)) \
- << _MAKE_SHIFT(WIDTH, pos))
-
-#define BIT4(POS) (1 << _MAKE_SHIFT(4, POS))
-#define BIT5(POS) (1 << _MAKE_SHIFT(5, POS))
-#define BIT8(POS) (1 << _MAKE_SHIFT(8, POS))
-#define BIT10(POS) (1 << _MAKE_SHIFT(10, POS))
-#define BIT32(POS) _BITn(32, POS)
-#define BIT64(POS) _BITn(64, POS)
-
-#if (WITH_TARGET_WORD_BITSIZE == 64)
-#define BIT(POS) BIT64(POS)
-#else
-#define BIT(POS) (((POS) < 32) ? 0 : _BITn(32, (POS)-32))
-#endif
-
-
-/* multi bit mask */
-#define _MASKn(WIDTH, START, STOP) \
-(((((unsigned##WIDTH)0) - 1) \
- >> (WIDTH - ((STOP) - (START) + 1))) \
- << (WIDTH - 1 - (STOP)))
-
-#define MASK32(START, STOP) _MASKn(32, START, STOP)
-#define MASK64(START, STOP) _MASKn(64, START, STOP)
-
-#if (WITH_TARGET_WORD_BITSIZE == 64)
-#define MASK(START, STOP) \
-(((START) <= (STOP)) \
- ? _MASKn(64, START, STOP) \
- : (_MASKn(64, 0, STOP) \
- | _MASKn(64, START, 63)))
-#else
-#define MASK(START, STOP) \
-(((START) <= (STOP)) \
- ? (((STOP) < 32) \
- ? 0 \
- : _MASKn(32, \
- (START) < 32 ? 0 : (START) - 32, \
- (STOP)-32)) \
- : (_MASKn(32, \
- (START) < 32 ? 0 : (START) - 32, \
- 31) \
- | (((STOP) < 32) \
- ? 0 \
- : _MASKn(32, \
- 0, \
- (STOP) - 32))))
-#endif
-
-
-/* mask the required bits, leaving them in place */
-
-INLINE_BITS\
-(unsigned32) MASKED32
-(unsigned32 word,
- unsigned start,
- unsigned stop);
-
-INLINE_BITS\
-(unsigned64) MASKED64
-(unsigned64 word,
- unsigned start,
- unsigned stop);
-
-INLINE_BITS\
-(unsigned_word) MASKED
-(unsigned_word word,
- unsigned start,
- unsigned stop);
-
-
-/* extract the required bits aligning them with the lsb */
-#define _EXTRACTEDn(WIDTH, WORD, START, STOP) \
-((((natural##WIDTH)(WORD)) >> (WIDTH - (STOP) - 1)) \
- & _MASKn(WIDTH, WIDTH-1+(START)-(STOP), WIDTH-1))
-
-/* #define EXTRACTED10(WORD, START, STOP) _EXTRACTEDn(10, WORD, START, STOP) */
-#define EXTRACTED32(WORD, START, STOP) _EXTRACTEDn(32, WORD, START, STOP)
-#define EXTRACTED64(WORD, START, STOP) _EXTRACTEDn(64, WORD, START, STOP)
-
-INLINE_BITS\
-(unsigned_word) EXTRACTED
-(unsigned_word val,
- unsigned start,
- unsigned stop);
-
-
-/* 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)
-
-
-/* move a group of bits around */
-#define _INSERTEDn(N, WORD, START, STOP) \
-(((natural##N)(WORD) << _MAKE_SHIFT(N, STOP)) & _MASKn(N, START, STOP))
-
-#define INSERTED32(WORD, START, STOP) _INSERTEDn(32, WORD, START, STOP)
-#define INSERTED64(WORD, START, STOP) _INSERTEDn(64, WORD, START, STOP)
-
-INLINE_BITS\
-(unsigned_word) INSERTED
-(unsigned_word val,
- unsigned start,
- unsigned stop);
-
-
-/* depending on MODE return a 64bit or 32bit (sign extended) value */
-#if (WITH_TARGET_WORD_BITSIZE == 64)
-#define EXTENDED(X) ((signed64)(signed32)(X))
-#else
-#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 to make things easier
-
- NOTE: These are functions not macro's as the latter tickles bugs in
- gcc-2.6.3 */
-
-#define _ROTLn(N, VAL, SHIFT) \
-(((VAL) << (SHIFT)) | ((VAL) >> ((N)-(SHIFT))))
-
-INLINE_BITS\
-(unsigned32) ROTL32
-(unsigned32 val,
- long shift);
-
-INLINE_BITS\
-(unsigned64) ROTL64
-(unsigned64 val,
- long shift);
-
-
-#if (BITS_INLINE & INCLUDE_MODULE)
-#include "bits.c"
-#endif
-
-#endif /* _BITS_H_ */
View Lorry Controller Status