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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.2/] [sim/] [ppc/] [bits.c] - Rev 357
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/* 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_C_ #define _BITS_C_ #include "basics.h" INLINE_BITS\ (unsigned64) LSMASKED64 (unsigned64 word, int start, int stop) { word &= LSMASK64 (start, stop); return word; } INLINE_BITS\ (unsigned64) LSEXTRACTED64 (unsigned64 val, int start, int stop) { val <<= (64 - 1 - start); /* drop high bits */ val >>= (64 - 1 - start) + (stop); /* drop low bits */ return val; } INLINE_BITS\ (unsigned32) MASKED32(unsigned32 word, unsigned start, unsigned stop) { return (word & MASK32(start, stop)); } INLINE_BITS\ (unsigned64) MASKED64(unsigned64 word, unsigned start, unsigned stop) { return (word & MASK64(start, stop)); } INLINE_BITS\ (unsigned_word) MASKED(unsigned_word word, unsigned start, unsigned stop) { return ((word) & MASK(start, stop)); } INLINE_BITS\ (unsigned_word) EXTRACTED(unsigned_word word, unsigned start, unsigned stop) { ASSERT(start <= stop); #if (WITH_TARGET_WORD_BITSIZE == 64) return _EXTRACTEDn(64, word, start, stop); #else if (stop < 32) return 0; else return ((word >> (63 - stop)) & MASK(start+(63-stop), 63)); #endif } INLINE_BITS\ (unsigned_word) INSERTED(unsigned_word word, unsigned start, unsigned stop) { ASSERT(start <= stop); #if (WITH_TARGET_WORD_BITSIZE == 64) return _INSERTEDn(64, word, start, stop); #else if (stop < 32) return 0; else return ((word & MASK(start+(63-stop), 63)) << (63 - stop)); #endif } INLINE_BITS\ (unsigned32) ROTL32(unsigned32 val, long shift) { ASSERT(shift >= 0 && shift <= 32); return _ROTLn(32, val, shift); } INLINE_BITS\ (unsigned64) ROTL64(unsigned64 val, long shift) { ASSERT(shift >= 0 && shift <= 64); return _ROTLn(64, val, shift); } #endif /* _BITS_C_ */
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