/*
 * MIPS SIMD Architecture Module Instruction emulation helpers for QEMU.
 *
 * Copyright (c) 2014 Imagination Technologies
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
 */

#include "cpu.h"
#include "exec/helper-proto.h"

/* Data format min and max values */
#define DF_BITS(df) (1 << ((df) + 3))

#define DF_MAX_INT(df)  (int64_t)((1LL << (DF_BITS(df) - 1)) - 1)
#define M_MAX_INT(m)    (int64_t)((1LL << ((m)         - 1)) - 1)

#define DF_MIN_INT(df)  (int64_t)(-(1LL << (DF_BITS(df) - 1)))
#define M_MIN_INT(m)    (int64_t)(-(1LL << ((m)         - 1)))

#define DF_MAX_UINT(df) (uint64_t)(-1ULL >> (64 - DF_BITS(df)))
#define M_MAX_UINT(m)   (uint64_t)(-1ULL >> (64 - (m)))

#define UNSIGNED(x, df) ((x) & DF_MAX_UINT(df))
#define SIGNED(x, df)                                                   \
    ((((int64_t)x) << (64 - DF_BITS(df))) >> (64 - DF_BITS(df)))

/* Element-by-element access macros */
#define DF_ELEMENTS(df) (MSA_WRLEN / DF_BITS(df))

static inline void msa_move_v(wr_t *pwd, wr_t *pws)
{
    uint32_t i;

    for (i = 0; i < DF_ELEMENTS(DF_DOUBLE); i++) {
        pwd->d[i] = pws->d[i];
    }
}