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[/] [or1k/] [branches/] [oc/] [gdb-5.0/] [sim/] [common/] [sim-bits.c] - Rev 1771
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/* This file is part of the program psim. Copyright (C) 1994-1997, 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 _SIM_BITS_C_ #define _SIM_BITS_C_ #include "sim-basics.h" #include "sim-assert.h" #include "sim-io.h" INLINE_SIM_BITS\ (unsigned_word) LSMASKED (unsigned_word val, int start, int stop) { /* NOTE - start, stop can wrap */ val &= LSMASK (start, stop); return val; } INLINE_SIM_BITS\ (unsigned_word) MSMASKED (unsigned_word val, int start, int stop) { /* NOTE - start, stop can wrap */ val &= MSMASK (start, stop); return val; } INLINE_SIM_BITS\ (unsigned_word) LSEXTRACTED (unsigned_word val, int start, int stop) { ASSERT (start >= stop); #if (WITH_TARGET_WORD_BITSIZE == 64) return LSEXTRACTED64 (val, start, stop); #endif #if (WITH_TARGET_WORD_BITSIZE == 32) if (stop >= 32) return 0; else { if (start < 32) val &= LSMASK (start, 0); val >>= stop; return val; } #endif } INLINE_SIM_BITS\ (unsigned_word) MSEXTRACTED (unsigned_word val, int start, int stop) { ASSERT (start <= stop); #if (WITH_TARGET_WORD_BITSIZE == 64) return MSEXTRACTED64 (val, start, stop); #endif #if (WITH_TARGET_WORD_BITSIZE == 32) if (stop < 32) return 0; else { if (start >= 32) val &= MSMASK (start, 64 - 1); val >>= (64 - stop - 1); return val; } #endif } INLINE_SIM_BITS\ (unsigned_word) LSINSERTED (unsigned_word val, int start, int stop) { ASSERT (start >= stop); #if (WITH_TARGET_WORD_BITSIZE == 64) return LSINSERTED64 (val, start, stop); #endif #if (WITH_TARGET_WORD_BITSIZE == 32) /* Bit numbers are 63..0, even for 32 bit targets. On 32 bit targets we ignore 63..32 */ if (stop >= 32) return 0; else { val <<= stop; val &= LSMASK (start, stop); return val; } #endif } INLINE_SIM_BITS\ (unsigned_word) MSINSERTED (unsigned_word val, int start, int stop) { ASSERT (start <= stop); #if (WITH_TARGET_WORD_BITSIZE == 64) return MSINSERTED64 (val, start, stop); #endif #if (WITH_TARGET_WORD_BITSIZE == 32) /* Bit numbers are 0..63, even for 32 bit targets. On 32 bit targets we ignore 0..31. */ if (stop < 32) return 0; else { val <<= ((64 - 1) - stop); val &= MSMASK (start, stop); return val; } #endif } INLINE_SIM_BITS\ (unsigned_word) LSSEXT (signed_word val, int sign_bit) { ASSERT (sign_bit < 64); #if (WITH_TARGET_WORD_BITSIZE == 64) return LSSEXT64 (val, sign_bit); #endif #if (WITH_TARGET_WORD_BITSIZE == 32) if (sign_bit >= 32) return val; else { val = LSSEXT32 (val, sign_bit); return val; } #endif } INLINE_SIM_BITS\ (unsigned_word) MSSEXT (signed_word val, int sign_bit) { ASSERT (sign_bit < 64); #if (WITH_TARGET_WORD_BITSIZE == 64) return MSSEXT64 (val, sign_bit); #endif #if (WITH_TARGET_WORD_BITSIZE == 32) if (sign_bit < 32) return val; else { val = MSSEXT32 (val, sign_bit - 32); return val; } #endif } #define N 8 #include "sim-n-bits.h" #undef N #define N 16 #include "sim-n-bits.h" #undef N #define N 32 #include "sim-n-bits.h" #undef N #define N 64 #include "sim-n-bits.h" #undef N #endif /* _SIM_BITS_C_ */
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