Commit ea8d7840 authored by David Hildenbrand's avatar David Hildenbrand
Browse files

s390x/tcg: Implement VECTOR SUBTRACT 



We can use tcg_gen_sub2_i64() to do 128-bit subtraction and otherwise
existing gvec helpers.

Reviewed-by: default avatarRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: default avatarDavid Hildenbrand <david@redhat.com>
parent 8112274f

target/s390x/insn-data.def

+2 −0
Original line number Diff line number Diff line
@@ -1174,6 +1174,8 @@ 
    F(0xe77c, VSRL,    VRR_c, V,   0, 0, 0, 0, vsrl, 0, IF_VEC)

/* VECTOR SHIFT RIGHT LOGICAL BY BYTE */

    F(0xe77d, VSRLB,   VRR_c, V,   0, 0, 0, 0, vsrl, 0, IF_VEC)

/* VECTOR SUBTRACT */

    F(0xe7f7, VS,      VRR_c, V,   0, 0, 0, 0, vs, 0, IF_VEC)



#ifndef CONFIG_USER_ONLY

/* COMPARE AND SWAP AND PURGE */

target/s390x/translate_vx.inc.c

+17 −0
Original line number Diff line number Diff line
@@ -2123,3 +2123,20 @@ static DisasJumpType op_vsrl(DisasContext *s, DisasOps *o) 
    tcg_temp_free_i64(shift);

    return DISAS_NEXT;

}



static DisasJumpType op_vs(DisasContext *s, DisasOps *o)

{

    const uint8_t es = get_field(s->fields, m4);



    if (es > ES_128) {

        gen_program_exception(s, PGM_SPECIFICATION);

        return DISAS_NORETURN;

    } else if (es == ES_128) {

        gen_gvec128_3_i64(tcg_gen_sub2_i64, get_field(s->fields, v1),

                          get_field(s->fields, v2), get_field(s->fields, v3));

        return DISAS_NEXT;

    }

    gen_gvec_fn_3(sub, es, get_field(s->fields, v1), get_field(s->fields, v2),

                  get_field(s->fields, v3));

    return DISAS_NEXT;

}