42daa9bed4
add msa_helper.c Reviewed-by: James Hogan <james.hogan@imgtec.com> Reviewed-by: Leon Alrae <leon.alrae@imgtec.com> Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
/*
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* MIPS SIMD Architecture Module Instruction emulation helpers for QEMU.
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*
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* Copyright (c) 2014 Imagination Technologies
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "cpu.h"
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#include "exec/helper-proto.h"
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/* Data format min and max values */
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#define DF_BITS(df) (1 << ((df) + 3))
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#define DF_MAX_INT(df) (int64_t)((1LL << (DF_BITS(df) - 1)) - 1)
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#define M_MAX_INT(m) (int64_t)((1LL << ((m) - 1)) - 1)
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#define DF_MIN_INT(df) (int64_t)(-(1LL << (DF_BITS(df) - 1)))
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#define M_MIN_INT(m) (int64_t)(-(1LL << ((m) - 1)))
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#define DF_MAX_UINT(df) (uint64_t)(-1ULL >> (64 - DF_BITS(df)))
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#define M_MAX_UINT(m) (uint64_t)(-1ULL >> (64 - (m)))
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#define UNSIGNED(x, df) ((x) & DF_MAX_UINT(df))
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#define SIGNED(x, df) \
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((((int64_t)x) << (64 - DF_BITS(df))) >> (64 - DF_BITS(df)))
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/* Element-by-element access macros */
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#define DF_ELEMENTS(df) (MSA_WRLEN / DF_BITS(df))
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static inline void msa_move_v(wr_t *pwd, wr_t *pws)
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{
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uint32_t i;
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for (i = 0; i < DF_ELEMENTS(DF_DOUBLE); i++) {
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pwd->d[i] = pws->d[i];
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}
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}
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