135 lines
2.6 KiB
C
135 lines
2.6 KiB
C
/* This file is part of the program psim.
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Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef _BITS_C_
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#define _BITS_C_
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#include "basics.h"
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INLINE_BITS\
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(unsigned64)
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LSMASKED64 (unsigned64 word,
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int start,
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int stop)
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{
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word &= LSMASK64 (start, stop);
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return word;
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}
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INLINE_BITS\
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(unsigned64)
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LSEXTRACTED64 (unsigned64 val,
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int start,
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int stop)
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{
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val <<= (64 - 1 - start); /* drop high bits */
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val >>= (64 - 1 - start) + (stop); /* drop low bits */
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return val;
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}
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INLINE_BITS\
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(unsigned32)
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MASKED32(unsigned32 word,
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unsigned start,
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unsigned stop)
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{
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return (word & MASK32(start, stop));
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}
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INLINE_BITS\
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(unsigned64)
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MASKED64(unsigned64 word,
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unsigned start,
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unsigned stop)
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{
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return (word & MASK64(start, stop));
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}
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INLINE_BITS\
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(unsigned_word)
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MASKED(unsigned_word word,
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unsigned start,
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unsigned stop)
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{
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return ((word) & MASK(start, stop));
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}
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INLINE_BITS\
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(unsigned_word)
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EXTRACTED(unsigned_word word,
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unsigned start,
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unsigned stop)
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{
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ASSERT(start <= stop);
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#if (WITH_TARGET_WORD_BITSIZE == 64)
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return _EXTRACTEDn(64, word, start, stop);
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#else
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if (stop < 32)
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return 0;
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else
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return ((word >> (63 - stop))
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& MASK(start+(63-stop), 63));
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#endif
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}
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INLINE_BITS\
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(unsigned_word)
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INSERTED(unsigned_word word,
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unsigned start,
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unsigned stop)
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{
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ASSERT(start <= stop);
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#if (WITH_TARGET_WORD_BITSIZE == 64)
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return _INSERTEDn(64, word, start, stop);
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#else
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if (stop < 32)
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return 0;
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else
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return ((word & MASK(start+(63-stop), 63))
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<< (63 - stop));
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#endif
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}
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INLINE_BITS\
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(unsigned32)
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ROTL32(unsigned32 val,
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long shift)
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{
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ASSERT(shift >= 0 && shift <= 32);
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return _ROTLn(32, val, shift);
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}
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INLINE_BITS\
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(unsigned64)
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ROTL64(unsigned64 val,
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long shift)
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{
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ASSERT(shift >= 0 && shift <= 64);
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return _ROTLn(64, val, shift);
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}
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#endif /* _BITS_C_ */
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