Commit ed491961 authored by Richard Henderson's avatar Richard Henderson Committed by Peter Maydell
Browse files

target/arm: Implement FDUP/DUP 



Reviewed-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: default avatarRichard Henderson <richard.henderson@linaro.org>
Message-id: 20180613015641.5667-17-richard.henderson@linaro.org
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parent caf1cefc

target/arm/sve.decode

+8 −0
Original line number Diff line number Diff line
@@ -614,6 +614,14 @@ CTERM 00100101 1 sf:1 1 rm:5 001000 rn:5 ne:1 0000 
# SVE integer compare scalar count and limit

WHILE           00100101 esz:2 1 rm:5 000 sf:1 u:1 1 rn:5 eq:1 rd:4



### SVE Integer Wide Immediate - Unpredicated Group



# SVE broadcast floating-point immediate (unpredicated)

FDUP            00100101 esz:2 111 00 1110 imm:8 rd:5



# SVE broadcast integer immediate (unpredicated)

DUP_i           00100101 esz:2 111 00 011 . ........ rd:5       imm=%sh8_i8s



### SVE Memory - 32-bit Gather and Unsized Contiguous Group



# SVE load predicate register

target/arm/translate-sve.c

+37 −0
Original line number Diff line number Diff line
@@ -3191,6 +3191,43 @@ static bool trans_WHILE(DisasContext *s, arg_WHILE *a, uint32_t insn) 
    return true;

}



/*

 *** SVE Integer Wide Immediate - Unpredicated Group

 */



static bool trans_FDUP(DisasContext *s, arg_FDUP *a, uint32_t insn)

{

    if (a->esz == 0) {

        return false;

    }

    if (sve_access_check(s)) {

        unsigned vsz = vec_full_reg_size(s);

        int dofs = vec_full_reg_offset(s, a->rd);

        uint64_t imm;



        /* Decode the VFP immediate.  */

        imm = vfp_expand_imm(a->esz, a->imm);

        imm = dup_const(a->esz, imm);



        tcg_gen_gvec_dup64i(dofs, vsz, vsz, imm);

    }

    return true;

}



static bool trans_DUP_i(DisasContext *s, arg_DUP_i *a, uint32_t insn)

{

    if (a->esz == 0 && extract32(insn, 13, 1)) {

        return false;

    }

    if (sve_access_check(s)) {

        unsigned vsz = vec_full_reg_size(s);

        int dofs = vec_full_reg_offset(s, a->rd);



        tcg_gen_gvec_dup64i(dofs, vsz, vsz, dup_const(a->esz, a->imm));

    }

    return true;

}



/*

 *** SVE Memory - 32-bit Gather and Unsized Contiguous Group

 */