xref: /openbmc/qemu/target/mips/tcg/msa_translate.c (revision ff29e5d3)

/*
 *  MIPS SIMD Architecture (MSA) translation routines
 *
 *  Copyright (c) 2004-2005 Jocelyn Mayer
 *  Copyright (c) 2006 Marius Groeger (FPU operations)
 *  Copyright (c) 2006 Thiemo Seufer (MIPS32R2 support)
 *  Copyright (c) 2009 CodeSourcery (MIPS16 and microMIPS support)
 *  Copyright (c) 2012 Jia Liu & Dongxue Zhang (MIPS ASE DSP support)
 *  Copyright (c) 2020 Philippe Mathieu-Daudé
 *
 * SPDX-License-Identifier: LGPL-2.1-or-later
 */
#include "qemu/osdep.h"
#include "tcg/tcg-op.h"
#include "exec/helper-gen.h"
#include "translate.h"
#include "fpu_helper.h"
#include "internal.h"

static int bit_m(DisasContext *ctx, int x);
static int bit_df(DisasContext *ctx, int x);

static inline int plus_1(DisasContext *s, int x)
{
    return x + 1;
}

static inline int plus_2(DisasContext *s, int x)
{
    return x + 2;
}

/* Include the auto-generated decoder.  */
#include "decode-msa.c.inc"

#define OPC_MSA (0x1E << 26)

#define MASK_MSA_MINOR(op)          (MASK_OP_MAJOR(op) | (op & 0x3F))
enum {
    OPC_MSA_3R_0D   = 0x0D | OPC_MSA,
    OPC_MSA_3R_0E   = 0x0E | OPC_MSA,
    OPC_MSA_3R_0F   = 0x0F | OPC_MSA,
    OPC_MSA_3R_10   = 0x10 | OPC_MSA,
    OPC_MSA_3R_11   = 0x11 | OPC_MSA,
    OPC_MSA_3R_12   = 0x12 | OPC_MSA,
    OPC_MSA_3R_13   = 0x13 | OPC_MSA,
    OPC_MSA_3R_14   = 0x14 | OPC_MSA,
    OPC_MSA_3R_15   = 0x15 | OPC_MSA,
    OPC_MSA_ELM     = 0x19 | OPC_MSA,
    OPC_MSA_3RF_1A  = 0x1A | OPC_MSA,
    OPC_MSA_3RF_1B  = 0x1B | OPC_MSA,
    OPC_MSA_3RF_1C  = 0x1C | OPC_MSA,
};

enum {
    /* 3R instruction df(bits 22..21) = _b, _h, _w, d */
    OPC_SLL_df      = (0x0 << 23) | OPC_MSA_3R_0D,
    OPC_ADDV_df     = (0x0 << 23) | OPC_MSA_3R_0E,
    OPC_CEQ_df      = (0x0 << 23) | OPC_MSA_3R_0F,
    OPC_ADD_A_df    = (0x0 << 23) | OPC_MSA_3R_10,
    OPC_SUBS_S_df   = (0x0 << 23) | OPC_MSA_3R_11,
    OPC_MULV_df     = (0x0 << 23) | OPC_MSA_3R_12,
    OPC_DOTP_S_df   = (0x0 << 23) | OPC_MSA_3R_13,
    OPC_SLD_df      = (0x0 << 23) | OPC_MSA_3R_14,
    OPC_VSHF_df     = (0x0 << 23) | OPC_MSA_3R_15,
    OPC_SRA_df      = (0x1 << 23) | OPC_MSA_3R_0D,
    OPC_SUBV_df     = (0x1 << 23) | OPC_MSA_3R_0E,
    OPC_ADDS_A_df   = (0x1 << 23) | OPC_MSA_3R_10,
    OPC_SUBS_U_df   = (0x1 << 23) | OPC_MSA_3R_11,
    OPC_MADDV_df    = (0x1 << 23) | OPC_MSA_3R_12,
    OPC_DOTP_U_df   = (0x1 << 23) | OPC_MSA_3R_13,
    OPC_SPLAT_df    = (0x1 << 23) | OPC_MSA_3R_14,
    OPC_SRAR_df     = (0x1 << 23) | OPC_MSA_3R_15,
    OPC_SRL_df      = (0x2 << 23) | OPC_MSA_3R_0D,
    OPC_MAX_S_df    = (0x2 << 23) | OPC_MSA_3R_0E,
    OPC_CLT_S_df    = (0x2 << 23) | OPC_MSA_3R_0F,
    OPC_ADDS_S_df   = (0x2 << 23) | OPC_MSA_3R_10,
    OPC_SUBSUS_U_df = (0x2 << 23) | OPC_MSA_3R_11,
    OPC_MSUBV_df    = (0x2 << 23) | OPC_MSA_3R_12,
    OPC_DPADD_S_df  = (0x2 << 23) | OPC_MSA_3R_13,
    OPC_PCKEV_df    = (0x2 << 23) | OPC_MSA_3R_14,
    OPC_SRLR_df     = (0x2 << 23) | OPC_MSA_3R_15,
    OPC_BCLR_df     = (0x3 << 23) | OPC_MSA_3R_0D,
    OPC_MAX_U_df    = (0x3 << 23) | OPC_MSA_3R_0E,
    OPC_CLT_U_df    = (0x3 << 23) | OPC_MSA_3R_0F,
    OPC_ADDS_U_df   = (0x3 << 23) | OPC_MSA_3R_10,
    OPC_SUBSUU_S_df = (0x3 << 23) | OPC_MSA_3R_11,
    OPC_DPADD_U_df  = (0x3 << 23) | OPC_MSA_3R_13,
    OPC_PCKOD_df    = (0x3 << 23) | OPC_MSA_3R_14,
    OPC_BSET_df     = (0x4 << 23) | OPC_MSA_3R_0D,
    OPC_MIN_S_df    = (0x4 << 23) | OPC_MSA_3R_0E,
    OPC_CLE_S_df    = (0x4 << 23) | OPC_MSA_3R_0F,
    OPC_AVE_S_df    = (0x4 << 23) | OPC_MSA_3R_10,
    OPC_ASUB_S_df   = (0x4 << 23) | OPC_MSA_3R_11,
    OPC_DIV_S_df    = (0x4 << 23) | OPC_MSA_3R_12,
    OPC_DPSUB_S_df  = (0x4 << 23) | OPC_MSA_3R_13,
    OPC_ILVL_df     = (0x4 << 23) | OPC_MSA_3R_14,
    OPC_HADD_S_df   = (0x4 << 23) | OPC_MSA_3R_15,
    OPC_BNEG_df     = (0x5 << 23) | OPC_MSA_3R_0D,
    OPC_MIN_U_df    = (0x5 << 23) | OPC_MSA_3R_0E,
    OPC_CLE_U_df    = (0x5 << 23) | OPC_MSA_3R_0F,
    OPC_AVE_U_df    = (0x5 << 23) | OPC_MSA_3R_10,
    OPC_ASUB_U_df   = (0x5 << 23) | OPC_MSA_3R_11,
    OPC_DIV_U_df    = (0x5 << 23) | OPC_MSA_3R_12,
    OPC_DPSUB_U_df  = (0x5 << 23) | OPC_MSA_3R_13,
    OPC_ILVR_df     = (0x5 << 23) | OPC_MSA_3R_14,
    OPC_HADD_U_df   = (0x5 << 23) | OPC_MSA_3R_15,
    OPC_BINSL_df    = (0x6 << 23) | OPC_MSA_3R_0D,
    OPC_MAX_A_df    = (0x6 << 23) | OPC_MSA_3R_0E,
    OPC_AVER_S_df   = (0x6 << 23) | OPC_MSA_3R_10,
    OPC_MOD_S_df    = (0x6 << 23) | OPC_MSA_3R_12,
    OPC_ILVEV_df    = (0x6 << 23) | OPC_MSA_3R_14,
    OPC_HSUB_S_df   = (0x6 << 23) | OPC_MSA_3R_15,
    OPC_BINSR_df    = (0x7 << 23) | OPC_MSA_3R_0D,
    OPC_MIN_A_df    = (0x7 << 23) | OPC_MSA_3R_0E,
    OPC_AVER_U_df   = (0x7 << 23) | OPC_MSA_3R_10,
    OPC_MOD_U_df    = (0x7 << 23) | OPC_MSA_3R_12,
    OPC_ILVOD_df    = (0x7 << 23) | OPC_MSA_3R_14,
    OPC_HSUB_U_df   = (0x7 << 23) | OPC_MSA_3R_15,

    /* ELM instructions df(bits 21..16) = _b, _h, _w, _d */
    OPC_SLDI_df     = (0x0 << 22) | (0x00 << 16) | OPC_MSA_ELM,
    OPC_CTCMSA      = (0x0 << 22) | (0x3E << 16) | OPC_MSA_ELM,
    OPC_SPLATI_df   = (0x1 << 22) | (0x00 << 16) | OPC_MSA_ELM,
    OPC_CFCMSA      = (0x1 << 22) | (0x3E << 16) | OPC_MSA_ELM,
    OPC_COPY_S_df   = (0x2 << 22) | (0x00 << 16) | OPC_MSA_ELM,
    OPC_MOVE_V      = (0x2 << 22) | (0x3E << 16) | OPC_MSA_ELM,
    OPC_COPY_U_df   = (0x3 << 22) | (0x00 << 16) | OPC_MSA_ELM,
    OPC_INSERT_df   = (0x4 << 22) | (0x00 << 16) | OPC_MSA_ELM,
    OPC_INSVE_df    = (0x5 << 22) | (0x00 << 16) | OPC_MSA_ELM,

    /* 3RF instruction _df(bit 21) = _w, _d */
    OPC_FCAF_df     = (0x0 << 22) | OPC_MSA_3RF_1A,
    OPC_FADD_df     = (0x0 << 22) | OPC_MSA_3RF_1B,
    OPC_FCUN_df     = (0x1 << 22) | OPC_MSA_3RF_1A,
    OPC_FSUB_df     = (0x1 << 22) | OPC_MSA_3RF_1B,
    OPC_FCOR_df     = (0x1 << 22) | OPC_MSA_3RF_1C,
    OPC_FCEQ_df     = (0x2 << 22) | OPC_MSA_3RF_1A,
    OPC_FMUL_df     = (0x2 << 22) | OPC_MSA_3RF_1B,
    OPC_FCUNE_df    = (0x2 << 22) | OPC_MSA_3RF_1C,
    OPC_FCUEQ_df    = (0x3 << 22) | OPC_MSA_3RF_1A,
    OPC_FDIV_df     = (0x3 << 22) | OPC_MSA_3RF_1B,
    OPC_FCNE_df     = (0x3 << 22) | OPC_MSA_3RF_1C,
    OPC_FCLT_df     = (0x4 << 22) | OPC_MSA_3RF_1A,
    OPC_FMADD_df    = (0x4 << 22) | OPC_MSA_3RF_1B,
    OPC_FCULT_df    = (0x5 << 22) | OPC_MSA_3RF_1A,
    OPC_FMSUB_df    = (0x5 << 22) | OPC_MSA_3RF_1B,
    OPC_FCLE_df     = (0x6 << 22) | OPC_MSA_3RF_1A,
    OPC_FCULE_df    = (0x7 << 22) | OPC_MSA_3RF_1A,
    OPC_FEXP2_df    = (0x7 << 22) | OPC_MSA_3RF_1B,
    OPC_FSAF_df     = (0x8 << 22) | OPC_MSA_3RF_1A,
    OPC_FEXDO_df    = (0x8 << 22) | OPC_MSA_3RF_1B,
    OPC_FSUN_df     = (0x9 << 22) | OPC_MSA_3RF_1A,
    OPC_FSOR_df     = (0x9 << 22) | OPC_MSA_3RF_1C,
    OPC_FSEQ_df     = (0xA << 22) | OPC_MSA_3RF_1A,
    OPC_FTQ_df      = (0xA << 22) | OPC_MSA_3RF_1B,
    OPC_FSUNE_df    = (0xA << 22) | OPC_MSA_3RF_1C,
    OPC_FSUEQ_df    = (0xB << 22) | OPC_MSA_3RF_1A,
    OPC_FSNE_df     = (0xB << 22) | OPC_MSA_3RF_1C,
    OPC_FSLT_df     = (0xC << 22) | OPC_MSA_3RF_1A,
    OPC_FMIN_df     = (0xC << 22) | OPC_MSA_3RF_1B,
    OPC_FSULT_df    = (0xD << 22) | OPC_MSA_3RF_1A,
    OPC_FMIN_A_df   = (0xD << 22) | OPC_MSA_3RF_1B,
    OPC_FSLE_df     = (0xE << 22) | OPC_MSA_3RF_1A,
    OPC_FMAX_df     = (0xE << 22) | OPC_MSA_3RF_1B,
    OPC_FSULE_df    = (0xF << 22) | OPC_MSA_3RF_1A,
    OPC_FMAX_A_df   = (0xF << 22) | OPC_MSA_3RF_1B,
};

static const char msaregnames[][6] = {
    "w0.d0",  "w0.d1",  "w1.d0",  "w1.d1",
    "w2.d0",  "w2.d1",  "w3.d0",  "w3.d1",
    "w4.d0",  "w4.d1",  "w5.d0",  "w5.d1",
    "w6.d0",  "w6.d1",  "w7.d0",  "w7.d1",
    "w8.d0",  "w8.d1",  "w9.d0",  "w9.d1",
    "w10.d0", "w10.d1", "w11.d0", "w11.d1",
    "w12.d0", "w12.d1", "w13.d0", "w13.d1",
    "w14.d0", "w14.d1", "w15.d0", "w15.d1",
    "w16.d0", "w16.d1", "w17.d0", "w17.d1",
    "w18.d0", "w18.d1", "w19.d0", "w19.d1",
    "w20.d0", "w20.d1", "w21.d0", "w21.d1",
    "w22.d0", "w22.d1", "w23.d0", "w23.d1",
    "w24.d0", "w24.d1", "w25.d0", "w25.d1",
    "w26.d0", "w26.d1", "w27.d0", "w27.d1",
    "w28.d0", "w28.d1", "w29.d0", "w29.d1",
    "w30.d0", "w30.d1", "w31.d0", "w31.d1",
};

/* Encoding of Operation Field (must be indexed by CPUMIPSMSADataFormat) */
struct dfe {
    int start;
    int length;
    uint32_t mask;
};

/*
 * Extract immediate from df/{m,n} format (used by ELM & BIT instructions).
 * Returns the immediate value, or -1 if the format does not match.
 */
static int df_extract_val(DisasContext *ctx, int x, const struct dfe *s)
{
    for (unsigned i = 0; i < 4; i++) {
        if (extract32(x, s->start, s->length) == s->mask) {
            return extract32(x, 0, s->start);
        }
    }
    return -1;
}

/*
 * Extract DataField from df/{m,n} format (used by ELM & BIT instructions).
 * Returns the DataField, or -1 if the format does not match.
 */
static int df_extract_df(DisasContext *ctx, int x, const struct dfe *s)
{
    for (unsigned i = 0; i < 4; i++) {
        if (extract32(x, s->start, s->length) == s->mask) {
            return i;
        }
    }
    return -1;
}

static const struct dfe df_bit[] = {
    /* Table 3.28 BIT Instruction Format */
    [DF_BYTE]   = {3, 4, 0b1110},
    [DF_HALF]   = {4, 3, 0b110},
    [DF_WORD]   = {5, 2, 0b10},
    [DF_DOUBLE] = {6, 1, 0b0}
};

static int bit_m(DisasContext *ctx, int x)
{
    return df_extract_val(ctx, x, df_bit);
}

static int bit_df(DisasContext *ctx, int x)
{
    return df_extract_df(ctx, x, df_bit);
}

static TCGv_i64 msa_wr_d[64];

void msa_translate_init(void)
{
    int i;

    for (i = 0; i < 32; i++) {
        int off;

        /*
         * The MSA vector registers are mapped on the
         * scalar floating-point unit (FPU) registers.
         */
        off = offsetof(CPUMIPSState, active_fpu.fpr[i].wr.d[0]);
        msa_wr_d[i * 2] = fpu_f64[i];

        off = offsetof(CPUMIPSState, active_fpu.fpr[i].wr.d[1]);
        msa_wr_d[i * 2 + 1] =
                tcg_global_mem_new_i64(cpu_env, off, msaregnames[i * 2 + 1]);
    }
}

/*
 * Check if MSA is enabled.
 * This function is always called with MSA available.
 * If MSA is disabled, raise an exception.
 */
static inline bool check_msa_enabled(DisasContext *ctx)
{
    if (unlikely((ctx->hflags & MIPS_HFLAG_FPU) &&
                 !(ctx->hflags & MIPS_HFLAG_F64))) {
        gen_reserved_instruction(ctx);
        return false;
    }

    if (unlikely(!(ctx->hflags & MIPS_HFLAG_MSA))) {
        generate_exception_end(ctx, EXCP_MSADIS);
        return false;
    }
    return true;
}

typedef void gen_helper_piv(TCGv_ptr, TCGv_i32, TCGv);
typedef void gen_helper_pii(TCGv_ptr, TCGv_i32, TCGv_i32);
typedef void gen_helper_piii(TCGv_ptr, TCGv_i32, TCGv_i32, TCGv_i32);
typedef void gen_helper_piiii(TCGv_ptr, TCGv_i32, TCGv_i32, TCGv_i32, TCGv_i32);

#define TRANS_DF_x(TYPE, NAME, trans_func, gen_func) \
    static gen_helper_p##TYPE * const NAME##_tab[4] = { \
        gen_func##_b, gen_func##_h, gen_func##_w, gen_func##_d \
    }; \
    TRANS(NAME, trans_func, NAME##_tab[a->df])

#define TRANS_DF_iv(NAME, trans_func, gen_func) \
    TRANS_DF_x(iv, NAME, trans_func, gen_func)

#define TRANS_DF_ii(NAME, trans_func, gen_func) \
    TRANS_DF_x(ii, NAME, trans_func, gen_func)

static void gen_check_zero_element(TCGv tresult, uint8_t df, uint8_t wt,
                                   TCGCond cond)
{
    /* generates tcg ops to check if any element is 0 */
    /* Note this function only works with MSA_WRLEN = 128 */
    uint64_t eval_zero_or_big = dup_const(df, 1);
    uint64_t eval_big = eval_zero_or_big << ((8 << df) - 1);
    TCGv_i64 t0 = tcg_temp_new_i64();
    TCGv_i64 t1 = tcg_temp_new_i64();

    tcg_gen_subi_i64(t0, msa_wr_d[wt << 1], eval_zero_or_big);
    tcg_gen_andc_i64(t0, t0, msa_wr_d[wt << 1]);
    tcg_gen_andi_i64(t0, t0, eval_big);
    tcg_gen_subi_i64(t1, msa_wr_d[(wt << 1) + 1], eval_zero_or_big);
    tcg_gen_andc_i64(t1, t1, msa_wr_d[(wt << 1) + 1]);
    tcg_gen_andi_i64(t1, t1, eval_big);
    tcg_gen_or_i64(t0, t0, t1);
    /* if all bits are zero then all elements are not zero */
    /* if some bit is non-zero then some element is zero */
    tcg_gen_setcondi_i64(cond, t0, t0, 0);
    tcg_gen_trunc_i64_tl(tresult, t0);
    tcg_temp_free_i64(t0);
    tcg_temp_free_i64(t1);
}

static bool gen_msa_BxZ_V(DisasContext *ctx, int wt, int sa, TCGCond cond)
{
    TCGv_i64 t0;

    if (!check_msa_enabled(ctx)) {
        return true;
    }

    if (ctx->hflags & MIPS_HFLAG_BMASK) {
        gen_reserved_instruction(ctx);
        return true;
    }
    t0 = tcg_temp_new_i64();
    tcg_gen_or_i64(t0, msa_wr_d[wt << 1], msa_wr_d[(wt << 1) + 1]);
    tcg_gen_setcondi_i64(cond, t0, t0, 0);
    tcg_gen_trunc_i64_tl(bcond, t0);
    tcg_temp_free_i64(t0);

    ctx->btarget = ctx->base.pc_next + (sa << 2) + 4;

    ctx->hflags |= MIPS_HFLAG_BC;
    ctx->hflags |= MIPS_HFLAG_BDS32;

    return true;
}

static bool trans_BZ_V(DisasContext *ctx, arg_msa_bz *a)
{
    return gen_msa_BxZ_V(ctx, a->wt, a->sa, TCG_COND_EQ);
}

static bool trans_BNZ_V(DisasContext *ctx, arg_msa_bz *a)
{
    return gen_msa_BxZ_V(ctx, a->wt, a->sa, TCG_COND_NE);
}

static bool gen_msa_BxZ(DisasContext *ctx, int df, int wt, int sa, bool if_not)
{
    if (!check_msa_enabled(ctx)) {
        return true;
    }

    if (ctx->hflags & MIPS_HFLAG_BMASK) {
        gen_reserved_instruction(ctx);
        return true;
    }

    gen_check_zero_element(bcond, df, wt, if_not ? TCG_COND_EQ : TCG_COND_NE);

    ctx->btarget = ctx->base.pc_next + (sa << 2) + 4;
    ctx->hflags |= MIPS_HFLAG_BC;
    ctx->hflags |= MIPS_HFLAG_BDS32;

    return true;
}

static bool trans_BZ(DisasContext *ctx, arg_msa_bz *a)
{
    return gen_msa_BxZ(ctx, a->df, a->wt, a->sa, false);
}

static bool trans_BNZ(DisasContext *ctx, arg_msa_bz *a)
{
    return gen_msa_BxZ(ctx, a->df, a->wt, a->sa, true);
}

static bool trans_msa_i8(DisasContext *ctx, arg_msa_i *a,
                         gen_helper_piii *gen_msa_i8)
{
    if (!check_msa_enabled(ctx)) {
        return true;
    }

    gen_msa_i8(cpu_env,
               tcg_constant_i32(a->wd),
               tcg_constant_i32(a->ws),
               tcg_constant_i32(a->sa));

    return true;
}

TRANS(ANDI,     trans_msa_i8, gen_helper_msa_andi_b);
TRANS(ORI,      trans_msa_i8, gen_helper_msa_ori_b);
TRANS(NORI,     trans_msa_i8, gen_helper_msa_nori_b);
TRANS(XORI,     trans_msa_i8, gen_helper_msa_xori_b);
TRANS(BMNZI,    trans_msa_i8, gen_helper_msa_bmnzi_b);
TRANS(BMZI,     trans_msa_i8, gen_helper_msa_bmzi_b);
TRANS(BSELI,    trans_msa_i8, gen_helper_msa_bseli_b);

static bool trans_SHF(DisasContext *ctx, arg_msa_i *a)
{
    if (a->df == DF_DOUBLE) {
        return false;
    }

    if (!check_msa_enabled(ctx)) {
        return true;
    }

    gen_helper_msa_shf_df(cpu_env,
                          tcg_constant_i32(a->df),
                          tcg_constant_i32(a->wd),
                          tcg_constant_i32(a->ws),
                          tcg_constant_i32(a->sa));

    return true;
}

static bool trans_msa_i5(DisasContext *ctx, arg_msa_i *a,
                         gen_helper_piiii *gen_msa_i5)
{
    if (!check_msa_enabled(ctx)) {
        return true;
    }

    gen_msa_i5(cpu_env,
               tcg_constant_i32(a->df),
               tcg_constant_i32(a->wd),
               tcg_constant_i32(a->ws),
               tcg_constant_i32(a->sa));

    return true;
}

TRANS(ADDVI,    trans_msa_i5, gen_helper_msa_addvi_df);
TRANS(SUBVI,    trans_msa_i5, gen_helper_msa_subvi_df);
TRANS(MAXI_S,   trans_msa_i5, gen_helper_msa_maxi_s_df);
TRANS(MAXI_U,   trans_msa_i5, gen_helper_msa_maxi_u_df);
TRANS(MINI_S,   trans_msa_i5, gen_helper_msa_mini_s_df);
TRANS(MINI_U,   trans_msa_i5, gen_helper_msa_mini_u_df);
TRANS(CLTI_S,   trans_msa_i5, gen_helper_msa_clti_s_df);
TRANS(CLTI_U,   trans_msa_i5, gen_helper_msa_clti_u_df);
TRANS(CLEI_S,   trans_msa_i5, gen_helper_msa_clei_s_df);
TRANS(CLEI_U,   trans_msa_i5, gen_helper_msa_clei_u_df);
TRANS(CEQI,     trans_msa_i5, gen_helper_msa_ceqi_df);

static bool trans_LDI(DisasContext *ctx, arg_msa_ldi *a)
{
    if (!check_msa_enabled(ctx)) {
        return true;
    }

    gen_helper_msa_ldi_df(cpu_env,
                          tcg_constant_i32(a->df),
                          tcg_constant_i32(a->wd),
                          tcg_constant_i32(a->sa));

    return true;
}

static bool trans_msa_bit(DisasContext *ctx, arg_msa_bit *a,
                          gen_helper_piiii *gen_msa_bit)
{
    if (a->df < 0) {
        return false;
    }

    if (!check_msa_enabled(ctx)) {
        return true;
    }

    gen_msa_bit(cpu_env,
                tcg_constant_i32(a->df),
                tcg_constant_i32(a->wd),
                tcg_constant_i32(a->ws),
                tcg_constant_i32(a->m));

    return true;
}

TRANS(SLLI,     trans_msa_bit, gen_helper_msa_slli_df);
TRANS(SRAI,     trans_msa_bit, gen_helper_msa_srai_df);
TRANS(SRLI,     trans_msa_bit, gen_helper_msa_srli_df);
TRANS(BCLRI,    trans_msa_bit, gen_helper_msa_bclri_df);
TRANS(BSETI,    trans_msa_bit, gen_helper_msa_bseti_df);
TRANS(BNEGI,    trans_msa_bit, gen_helper_msa_bnegi_df);
TRANS(BINSLI,   trans_msa_bit, gen_helper_msa_binsli_df);
TRANS(BINSRI,   trans_msa_bit, gen_helper_msa_binsri_df);
TRANS(SAT_S,    trans_msa_bit, gen_helper_msa_sat_u_df);
TRANS(SAT_U,    trans_msa_bit, gen_helper_msa_sat_u_df);
TRANS(SRARI,    trans_msa_bit, gen_helper_msa_srari_df);
TRANS(SRLRI,    trans_msa_bit, gen_helper_msa_srlri_df);

static bool trans_msa_3rf(DisasContext *ctx, arg_msa_r *a,
                          gen_helper_piiii *gen_msa_3rf)
{
    if (!check_msa_enabled(ctx)) {
        return true;
    }

    gen_msa_3rf(cpu_env,
                tcg_constant_i32(a->df),
                tcg_constant_i32(a->wd),
                tcg_constant_i32(a->ws),
                tcg_constant_i32(a->wt));

    return true;
}

static bool trans_msa_3r(DisasContext *ctx, arg_msa_r *a,
                         gen_helper_piii *gen_msa_3r)
{
    if (!check_msa_enabled(ctx)) {
        return true;
    }

    gen_msa_3r(cpu_env,
               tcg_constant_i32(a->wd),
               tcg_constant_i32(a->ws),
               tcg_constant_i32(a->wt));

    return true;
}

TRANS(AND_V,            trans_msa_3r,   gen_helper_msa_and_v);
TRANS(OR_V,             trans_msa_3r,   gen_helper_msa_or_v);
TRANS(NOR_V,            trans_msa_3r,   gen_helper_msa_nor_v);
TRANS(XOR_V,            trans_msa_3r,   gen_helper_msa_xor_v);
TRANS(BMNZ_V,           trans_msa_3r,   gen_helper_msa_bmnz_v);
TRANS(BMZ_V,            trans_msa_3r,   gen_helper_msa_bmz_v);
TRANS(BSEL_V,           trans_msa_3r,   gen_helper_msa_bsel_v);

static void gen_msa_3r(DisasContext *ctx)
{
#define MASK_MSA_3R(op)    (MASK_MSA_MINOR(op) | (op & (0x7 << 23)))
    uint8_t df = (ctx->opcode >> 21) & 0x3;
    uint8_t wt = (ctx->opcode >> 16) & 0x1f;
    uint8_t ws = (ctx->opcode >> 11) & 0x1f;
    uint8_t wd = (ctx->opcode >> 6) & 0x1f;

    TCGv_i32 tdf = tcg_const_i32(df);
    TCGv_i32 twd = tcg_const_i32(wd);
    TCGv_i32 tws = tcg_const_i32(ws);
    TCGv_i32 twt = tcg_const_i32(wt);

    switch (MASK_MSA_3R(ctx->opcode)) {
    case OPC_BINSL_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_binsl_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_binsl_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_binsl_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_binsl_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_BINSR_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_binsr_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_binsr_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_binsr_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_binsr_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_BCLR_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_bclr_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_bclr_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_bclr_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_bclr_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_BNEG_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_bneg_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_bneg_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_bneg_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_bneg_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_BSET_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_bset_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_bset_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_bset_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_bset_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_ADD_A_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_add_a_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_add_a_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_add_a_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_add_a_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_ADDS_A_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_adds_a_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_adds_a_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_adds_a_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_adds_a_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_ADDS_S_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_adds_s_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_adds_s_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_adds_s_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_adds_s_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_ADDS_U_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_adds_u_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_adds_u_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_adds_u_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_adds_u_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_ADDV_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_addv_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_addv_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_addv_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_addv_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_AVE_S_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_ave_s_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_ave_s_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_ave_s_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_ave_s_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_AVE_U_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_ave_u_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_ave_u_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_ave_u_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_ave_u_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_AVER_S_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_aver_s_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_aver_s_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_aver_s_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_aver_s_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_AVER_U_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_aver_u_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_aver_u_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_aver_u_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_aver_u_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_CEQ_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_ceq_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_ceq_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_ceq_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_ceq_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_CLE_S_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_cle_s_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_cle_s_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_cle_s_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_cle_s_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_CLE_U_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_cle_u_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_cle_u_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_cle_u_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_cle_u_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_CLT_S_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_clt_s_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_clt_s_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_clt_s_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_clt_s_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_CLT_U_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_clt_u_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_clt_u_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_clt_u_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_clt_u_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_DIV_S_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_div_s_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_div_s_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_div_s_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_div_s_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_DIV_U_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_div_u_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_div_u_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_div_u_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_div_u_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_MAX_A_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_max_a_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_max_a_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_max_a_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_max_a_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_MAX_S_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_max_s_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_max_s_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_max_s_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_max_s_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_MAX_U_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_max_u_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_max_u_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_max_u_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_max_u_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_MIN_A_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_min_a_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_min_a_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_min_a_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_min_a_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_MIN_S_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_min_s_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_min_s_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_min_s_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_min_s_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_MIN_U_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_min_u_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_min_u_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_min_u_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_min_u_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_MOD_S_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_mod_s_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_mod_s_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_mod_s_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_mod_s_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_MOD_U_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_mod_u_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_mod_u_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_mod_u_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_mod_u_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_MADDV_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_maddv_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_maddv_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_maddv_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_maddv_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_MSUBV_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_msubv_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_msubv_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_msubv_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_msubv_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_ASUB_S_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_asub_s_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_asub_s_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_asub_s_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_asub_s_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_ASUB_U_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_asub_u_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_asub_u_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_asub_u_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_asub_u_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_ILVEV_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_ilvev_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_ilvev_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_ilvev_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_ilvev_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_ILVOD_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_ilvod_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_ilvod_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_ilvod_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_ilvod_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_ILVL_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_ilvl_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_ilvl_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_ilvl_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_ilvl_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_ILVR_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_ilvr_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_ilvr_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_ilvr_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_ilvr_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_PCKEV_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_pckev_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_pckev_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_pckev_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_pckev_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_PCKOD_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_pckod_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_pckod_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_pckod_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_pckod_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_SLL_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_sll_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_sll_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_sll_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_sll_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_SRA_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_sra_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_sra_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_sra_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_sra_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_SRAR_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_srar_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_srar_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_srar_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_srar_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_SRL_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_srl_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_srl_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_srl_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_srl_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_SRLR_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_srlr_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_srlr_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_srlr_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_srlr_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_SUBS_S_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_subs_s_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_subs_s_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_subs_s_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_subs_s_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_MULV_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_mulv_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_mulv_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_mulv_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_mulv_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_SLD_df:
        gen_helper_msa_sld_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_VSHF_df:
        gen_helper_msa_vshf_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_SUBV_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_subv_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_subv_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_subv_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_subv_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_SUBS_U_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_subs_u_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_subs_u_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_subs_u_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_subs_u_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_SPLAT_df:
        gen_helper_msa_splat_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_SUBSUS_U_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_subsus_u_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_subsus_u_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_subsus_u_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_subsus_u_d(cpu_env, twd, tws, twt);
            break;
        }
        break;
    case OPC_SUBSUU_S_df:
        switch (df) {
        case DF_BYTE:
            gen_helper_msa_subsuu_s_b(cpu_env, twd, tws, twt);
            break;
        case DF_HALF:
            gen_helper_msa_subsuu_s_h(cpu_env, twd, tws, twt);
            break;
        case DF_WORD:
            gen_helper_msa_subsuu_s_w(cpu_env, twd, tws, twt);
            break;
        case DF_DOUBLE:
            gen_helper_msa_subsuu_s_d(cpu_env, twd, tws, twt);
            break;
        }
        break;

    case OPC_DOTP_S_df:
    case OPC_DOTP_U_df:
    case OPC_DPADD_S_df:
    case OPC_DPADD_U_df:
    case OPC_DPSUB_S_df:
    case OPC_HADD_S_df:
    case OPC_DPSUB_U_df:
    case OPC_HADD_U_df:
    case OPC_HSUB_S_df:
    case OPC_HSUB_U_df:
        if (df == DF_BYTE) {
            gen_reserved_instruction(ctx);
            break;
        }
        switch (MASK_MSA_3R(ctx->opcode)) {
        case OPC_HADD_S_df:
            switch (df) {
            case DF_HALF:
                gen_helper_msa_hadd_s_h(cpu_env, twd, tws, twt);
                break;
            case DF_WORD:
                gen_helper_msa_hadd_s_w(cpu_env, twd, tws, twt);
                break;
            case DF_DOUBLE:
                gen_helper_msa_hadd_s_d(cpu_env, twd, tws, twt);
                break;
            }
            break;
        case OPC_HADD_U_df:
            switch (df) {
            case DF_HALF:
                gen_helper_msa_hadd_u_h(cpu_env, twd, tws, twt);
                break;
            case DF_WORD:
                gen_helper_msa_hadd_u_w(cpu_env, twd, tws, twt);
                break;
            case DF_DOUBLE:
                gen_helper_msa_hadd_u_d(cpu_env, twd, tws, twt);
                break;
            }
            break;
        case OPC_HSUB_S_df:
            switch (df) {
            case DF_HALF:
                gen_helper_msa_hsub_s_h(cpu_env, twd, tws, twt);
                break;
            case DF_WORD:
                gen_helper_msa_hsub_s_w(cpu_env, twd, tws, twt);
                break;
            case DF_DOUBLE:
                gen_helper_msa_hsub_s_d(cpu_env, twd, tws, twt);
                break;
            }
            break;
        case OPC_HSUB_U_df:
            switch (df) {
            case DF_HALF:
                gen_helper_msa_hsub_u_h(cpu_env, twd, tws, twt);
                break;
            case DF_WORD:
                gen_helper_msa_hsub_u_w(cpu_env, twd, tws, twt);
                break;
            case DF_DOUBLE:
                gen_helper_msa_hsub_u_d(cpu_env, twd, tws, twt);
                break;
            }
            break;
        case OPC_DOTP_S_df:
            switch (df) {
            case DF_HALF:
                gen_helper_msa_dotp_s_h(cpu_env, twd, tws, twt);
                break;
            case DF_WORD:
                gen_helper_msa_dotp_s_w(cpu_env, twd, tws, twt);
                break;
            case DF_DOUBLE:
                gen_helper_msa_dotp_s_d(cpu_env, twd, tws, twt);
                break;
            }
            break;
        case OPC_DOTP_U_df:
            switch (df) {
            case DF_HALF:
                gen_helper_msa_dotp_u_h(cpu_env, twd, tws, twt);
                break;
            case DF_WORD:
                gen_helper_msa_dotp_u_w(cpu_env, twd, tws, twt);
                break;
            case DF_DOUBLE:
                gen_helper_msa_dotp_u_d(cpu_env, twd, tws, twt);
                break;
            }
            break;
        case OPC_DPADD_S_df:
            switch (df) {
            case DF_HALF:
                gen_helper_msa_dpadd_s_h(cpu_env, twd, tws, twt);
                break;
            case DF_WORD:
                gen_helper_msa_dpadd_s_w(cpu_env, twd, tws, twt);
                break;
            case DF_DOUBLE:
                gen_helper_msa_dpadd_s_d(cpu_env, twd, tws, twt);
                break;
            }
            break;
        case OPC_DPADD_U_df:
            switch (df) {
            case DF_HALF:
                gen_helper_msa_dpadd_u_h(cpu_env, twd, tws, twt);
                break;
            case DF_WORD:
                gen_helper_msa_dpadd_u_w(cpu_env, twd, tws, twt);
                break;
            case DF_DOUBLE:
                gen_helper_msa_dpadd_u_d(cpu_env, twd, tws, twt);
                break;
            }
            break;
        case OPC_DPSUB_S_df:
            switch (df) {
            case DF_HALF:
                gen_helper_msa_dpsub_s_h(cpu_env, twd, tws, twt);
                break;
            case DF_WORD:
                gen_helper_msa_dpsub_s_w(cpu_env, twd, tws, twt);
                break;
            case DF_DOUBLE:
                gen_helper_msa_dpsub_s_d(cpu_env, twd, tws, twt);
                break;
            }
            break;
        case OPC_DPSUB_U_df:
            switch (df) {
            case DF_HALF:
                gen_helper_msa_dpsub_u_h(cpu_env, twd, tws, twt);
                break;
            case DF_WORD:
                gen_helper_msa_dpsub_u_w(cpu_env, twd, tws, twt);
                break;
            case DF_DOUBLE:
                gen_helper_msa_dpsub_u_d(cpu_env, twd, tws, twt);
                break;
            }
            break;
        }
        break;
    default:
        MIPS_INVAL("MSA instruction");
        gen_reserved_instruction(ctx);
        break;
    }
    tcg_temp_free_i32(twd);
    tcg_temp_free_i32(tws);
    tcg_temp_free_i32(twt);
    tcg_temp_free_i32(tdf);
}

static void gen_msa_elm_3e(DisasContext *ctx)
{
#define MASK_MSA_ELM_DF3E(op)   (MASK_MSA_MINOR(op) | (op & (0x3FF << 16)))
    uint8_t source = (ctx->opcode >> 11) & 0x1f;
    uint8_t dest = (ctx->opcode >> 6) & 0x1f;
    TCGv telm = tcg_temp_new();
    TCGv_i32 tsr = tcg_const_i32(source);
    TCGv_i32 tdt = tcg_const_i32(dest);

    switch (MASK_MSA_ELM_DF3E(ctx->opcode)) {
    case OPC_CTCMSA:
        gen_load_gpr(telm, source);
        gen_helper_msa_ctcmsa(cpu_env, telm, tdt);
        break;
    case OPC_CFCMSA:
        gen_helper_msa_cfcmsa(telm, cpu_env, tsr);
        gen_store_gpr(telm, dest);
        break;
    case OPC_MOVE_V:
        gen_helper_msa_move_v(cpu_env, tdt, tsr);
        break;
    default:
        MIPS_INVAL("MSA instruction");
        gen_reserved_instruction(ctx);
        break;
    }

    tcg_temp_free(telm);
    tcg_temp_free_i32(tdt);
    tcg_temp_free_i32(tsr);
}

static void gen_msa_elm_df(DisasContext *ctx, uint32_t df, uint32_t n)
{
#define MASK_MSA_ELM(op)    (MASK_MSA_MINOR(op) | (op & (0xf << 22)))
    uint8_t ws = (ctx->opcode >> 11) & 0x1f;
    uint8_t wd = (ctx->opcode >> 6) & 0x1f;

    TCGv_i32 tws = tcg_const_i32(ws);
    TCGv_i32 twd = tcg_const_i32(wd);
    TCGv_i32 tn  = tcg_const_i32(n);
    TCGv_i32 tdf = tcg_constant_i32(df);

    switch (MASK_MSA_ELM(ctx->opcode)) {
    case OPC_SLDI_df:
        gen_helper_msa_sldi_df(cpu_env, tdf, twd, tws, tn);
        break;
    case OPC_SPLATI_df:
        gen_helper_msa_splati_df(cpu_env, tdf, twd, tws, tn);
        break;
    case OPC_INSVE_df:
        gen_helper_msa_insve_df(cpu_env, tdf, twd, tws, tn);
        break;
    case OPC_COPY_S_df:
    case OPC_COPY_U_df:
    case OPC_INSERT_df:
#if !defined(TARGET_MIPS64)
        /* Double format valid only for MIPS64 */
        if (df == DF_DOUBLE) {
            gen_reserved_instruction(ctx);
            break;
        }
        if ((MASK_MSA_ELM(ctx->opcode) == OPC_COPY_U_df) &&
              (df == DF_WORD)) {
            gen_reserved_instruction(ctx);
            break;
        }
#endif
        switch (MASK_MSA_ELM(ctx->opcode)) {
        case OPC_COPY_S_df:
            if (likely(wd != 0)) {
                switch (df) {
                case DF_BYTE:
                    gen_helper_msa_copy_s_b(cpu_env, twd, tws, tn);
                    break;
                case DF_HALF:
                    gen_helper_msa_copy_s_h(cpu_env, twd, tws, tn);
                    break;
                case DF_WORD:
                    gen_helper_msa_copy_s_w(cpu_env, twd, tws, tn);
                    break;
#if defined(TARGET_MIPS64)
                case DF_DOUBLE:
                    gen_helper_msa_copy_s_d(cpu_env, twd, tws, tn);
                    break;
#endif
                default:
                    assert(0);
                }
            }
            break;
        case OPC_COPY_U_df:
            if (likely(wd != 0)) {
                switch (df) {
                case DF_BYTE:
                    gen_helper_msa_copy_u_b(cpu_env, twd, tws, tn);
                    break;
                case DF_HALF:
                    gen_helper_msa_copy_u_h(cpu_env, twd, tws, tn);
                    break;
#if defined(TARGET_MIPS64)
                case DF_WORD:
                    gen_helper_msa_copy_u_w(cpu_env, twd, tws, tn);
                    break;
#endif
                default:
                    assert(0);
                }
            }
            break;
        case OPC_INSERT_df:
            switch (df) {
            case DF_BYTE:
                gen_helper_msa_insert_b(cpu_env, twd, tws, tn);
                break;
            case DF_HALF:
                gen_helper_msa_insert_h(cpu_env, twd, tws, tn);
                break;
            case DF_WORD:
                gen_helper_msa_insert_w(cpu_env, twd, tws, tn);
                break;
#if defined(TARGET_MIPS64)
            case DF_DOUBLE:
                gen_helper_msa_insert_d(cpu_env, twd, tws, tn);
                break;
#endif
            default:
                assert(0);
            }
            break;
        }
        break;
    default:
        MIPS_INVAL("MSA instruction");
        gen_reserved_instruction(ctx);
    }
    tcg_temp_free_i32(twd);
    tcg_temp_free_i32(tws);
    tcg_temp_free_i32(tn);
}

static void gen_msa_elm(DisasContext *ctx)
{
    uint8_t dfn = (ctx->opcode >> 16) & 0x3f;
    uint32_t df = 0, n = 0;

    if ((dfn & 0x30) == 0x00) {
        n = dfn & 0x0f;
        df = DF_BYTE;
    } else if ((dfn & 0x38) == 0x20) {
        n = dfn & 0x07;
        df = DF_HALF;
    } else if ((dfn & 0x3c) == 0x30) {
        n = dfn & 0x03;
        df = DF_WORD;
    } else if ((dfn & 0x3e) == 0x38) {
        n = dfn & 0x01;
        df = DF_DOUBLE;
    } else if (dfn == 0x3E) {
        /* CTCMSA, CFCMSA, MOVE.V */
        gen_msa_elm_3e(ctx);
        return;
    } else {
        gen_reserved_instruction(ctx);
        return;
    }

    gen_msa_elm_df(ctx, df, n);
}

TRANS(MUL_Q,    trans_msa_3rf, gen_helper_msa_mul_q_df);
TRANS(MADD_Q,   trans_msa_3rf, gen_helper_msa_madd_q_df);
TRANS(MSUB_Q,   trans_msa_3rf, gen_helper_msa_msub_q_df);
TRANS(MULR_Q,   trans_msa_3rf, gen_helper_msa_mulr_q_df);
TRANS(MADDR_Q,  trans_msa_3rf, gen_helper_msa_maddr_q_df);
TRANS(MSUBR_Q,  trans_msa_3rf, gen_helper_msa_msubr_q_df);

static void gen_msa_3rf(DisasContext *ctx)
{
#define MASK_MSA_3RF(op)    (MASK_MSA_MINOR(op) | (op & (0xf << 22)))
    uint8_t df = (ctx->opcode >> 21) & 0x1;
    uint8_t wt = (ctx->opcode >> 16) & 0x1f;
    uint8_t ws = (ctx->opcode >> 11) & 0x1f;
    uint8_t wd = (ctx->opcode >> 6) & 0x1f;

    TCGv_i32 twd = tcg_const_i32(wd);
    TCGv_i32 tws = tcg_const_i32(ws);
    TCGv_i32 twt = tcg_const_i32(wt);
    /* adjust df value for floating-point instruction */
    TCGv_i32 tdf = tcg_constant_i32(DF_WORD + df);

    switch (MASK_MSA_3RF(ctx->opcode)) {
    case OPC_FCAF_df:
        gen_helper_msa_fcaf_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FADD_df:
        gen_helper_msa_fadd_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FCUN_df:
        gen_helper_msa_fcun_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FSUB_df:
        gen_helper_msa_fsub_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FCOR_df:
        gen_helper_msa_fcor_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FCEQ_df:
        gen_helper_msa_fceq_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FMUL_df:
        gen_helper_msa_fmul_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FCUNE_df:
        gen_helper_msa_fcune_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FCUEQ_df:
        gen_helper_msa_fcueq_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FDIV_df:
        gen_helper_msa_fdiv_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FCNE_df:
        gen_helper_msa_fcne_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FCLT_df:
        gen_helper_msa_fclt_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FMADD_df:
        gen_helper_msa_fmadd_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FCULT_df:
        gen_helper_msa_fcult_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FMSUB_df:
        gen_helper_msa_fmsub_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FCLE_df:
        gen_helper_msa_fcle_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FCULE_df:
        gen_helper_msa_fcule_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FEXP2_df:
        gen_helper_msa_fexp2_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FSAF_df:
        gen_helper_msa_fsaf_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FEXDO_df:
        gen_helper_msa_fexdo_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FSUN_df:
        gen_helper_msa_fsun_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FSOR_df:
        gen_helper_msa_fsor_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FSEQ_df:
        gen_helper_msa_fseq_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FTQ_df:
        gen_helper_msa_ftq_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FSUNE_df:
        gen_helper_msa_fsune_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FSUEQ_df:
        gen_helper_msa_fsueq_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FSNE_df:
        gen_helper_msa_fsne_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FSLT_df:
        gen_helper_msa_fslt_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FMIN_df:
        gen_helper_msa_fmin_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FSULT_df:
        gen_helper_msa_fsult_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FMIN_A_df:
        gen_helper_msa_fmin_a_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FSLE_df:
        gen_helper_msa_fsle_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FMAX_df:
        gen_helper_msa_fmax_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FSULE_df:
        gen_helper_msa_fsule_df(cpu_env, tdf, twd, tws, twt);
        break;
    case OPC_FMAX_A_df:
        gen_helper_msa_fmax_a_df(cpu_env, tdf, twd, tws, twt);
        break;
    default:
        MIPS_INVAL("MSA instruction");
        gen_reserved_instruction(ctx);
        break;
    }

    tcg_temp_free_i32(twd);
    tcg_temp_free_i32(tws);
    tcg_temp_free_i32(twt);
}

static bool trans_msa_2r(DisasContext *ctx, arg_msa_r *a,
                         gen_helper_pii *gen_msa_2r)
{
    if (!check_msa_enabled(ctx)) {
        return true;
    }

    gen_msa_2r(cpu_env, tcg_constant_i32(a->wd), tcg_constant_i32(a->ws));

    return true;
}

TRANS_DF_ii(PCNT, trans_msa_2r, gen_helper_msa_pcnt);
TRANS_DF_ii(NLOC, trans_msa_2r, gen_helper_msa_nloc);
TRANS_DF_ii(NLZC, trans_msa_2r, gen_helper_msa_nlzc);

static bool trans_FILL(DisasContext *ctx, arg_msa_r *a)
{
    if (TARGET_LONG_BITS != 64 && a->df == DF_DOUBLE) {
        /* Double format valid only for MIPS64 */
        return false;
    }

    if (!check_msa_enabled(ctx)) {
        return true;
    }

    gen_helper_msa_fill_df(cpu_env,
                           tcg_constant_i32(a->df),
                           tcg_constant_i32(a->wd),
                           tcg_constant_i32(a->ws));

    return true;
}

static bool trans_msa_2rf(DisasContext *ctx, arg_msa_r *a,
                          gen_helper_piii *gen_msa_2rf)
{
    if (!check_msa_enabled(ctx)) {
        return true;
    }

    gen_msa_2rf(cpu_env,
                tcg_constant_i32(a->df),
                tcg_constant_i32(a->wd),
                tcg_constant_i32(a->ws));

    return true;
}

TRANS(FCLASS,   trans_msa_2rf, gen_helper_msa_fclass_df);
TRANS(FTRUNC_S, trans_msa_2rf, gen_helper_msa_fclass_df);
TRANS(FTRUNC_U, trans_msa_2rf, gen_helper_msa_ftrunc_s_df);
TRANS(FSQRT,    trans_msa_2rf, gen_helper_msa_fsqrt_df);
TRANS(FRSQRT,   trans_msa_2rf, gen_helper_msa_frsqrt_df);
TRANS(FRCP,     trans_msa_2rf, gen_helper_msa_frcp_df);
TRANS(FRINT,    trans_msa_2rf, gen_helper_msa_frint_df);
TRANS(FLOG2,    trans_msa_2rf, gen_helper_msa_flog2_df);
TRANS(FEXUPL,   trans_msa_2rf, gen_helper_msa_fexupl_df);
TRANS(FEXUPR,   trans_msa_2rf, gen_helper_msa_fexupr_df);
TRANS(FFQL,     trans_msa_2rf, gen_helper_msa_ffql_df);
TRANS(FFQR,     trans_msa_2rf, gen_helper_msa_ffqr_df);
TRANS(FTINT_S,  trans_msa_2rf, gen_helper_msa_ftint_s_df);
TRANS(FTINT_U,  trans_msa_2rf, gen_helper_msa_ftint_u_df);
TRANS(FFINT_S,  trans_msa_2rf, gen_helper_msa_ffint_s_df);
TRANS(FFINT_U,  trans_msa_2rf, gen_helper_msa_ffint_u_df);

static bool trans_MSA(DisasContext *ctx, arg_MSA *a)
{
    uint32_t opcode = ctx->opcode;

    if (!check_msa_enabled(ctx)) {
        return true;
    }

    switch (MASK_MSA_MINOR(opcode)) {
    case OPC_MSA_3R_0D:
    case OPC_MSA_3R_0E:
    case OPC_MSA_3R_0F:
    case OPC_MSA_3R_10:
    case OPC_MSA_3R_11:
    case OPC_MSA_3R_12:
    case OPC_MSA_3R_13:
    case OPC_MSA_3R_14:
    case OPC_MSA_3R_15:
        gen_msa_3r(ctx);
        break;
    case OPC_MSA_ELM:
        gen_msa_elm(ctx);
        break;
    case OPC_MSA_3RF_1A:
    case OPC_MSA_3RF_1B:
    case OPC_MSA_3RF_1C:
        gen_msa_3rf(ctx);
        break;
    default:
        MIPS_INVAL("MSA instruction");
        gen_reserved_instruction(ctx);
        break;
    }

    return true;
}

static bool trans_msa_ldst(DisasContext *ctx, arg_msa_i *a,
                           gen_helper_piv *gen_msa_ldst)
{
    TCGv taddr;

    if (!check_msa_enabled(ctx)) {
        return true;
    }

    taddr = tcg_temp_new();

    gen_base_offset_addr(ctx, taddr, a->ws, a->sa << a->df);
    gen_msa_ldst(cpu_env, tcg_constant_i32(a->wd), taddr);

    tcg_temp_free(taddr);

    return true;
}

TRANS_DF_iv(LD, trans_msa_ldst, gen_helper_msa_ld);
TRANS_DF_iv(ST, trans_msa_ldst, gen_helper_msa_st);

static bool trans_LSA(DisasContext *ctx, arg_r *a)
{
    return gen_lsa(ctx, a->rd, a->rt, a->rs, a->sa);
}

static bool trans_DLSA(DisasContext *ctx, arg_r *a)
{
    if (TARGET_LONG_BITS != 64) {
        return false;
    }
    return gen_dlsa(ctx, a->rd, a->rt, a->rs, a->sa);
}