Commit e58de341 authored by David Hildenbrand's avatar David Hildenbrand
Browse files

s390x/tcg: Implement VECTOR SUM ACROSS WORD



Similar to VECTOR SUM ACROSS DOUBLEWORD.

Reviewed-by: default avatarRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: default avatarDavid Hildenbrand <david@redhat.com>
parent 8dc69a19
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+2 −0
Original line number Diff line number Diff line
@@ -1186,6 +1186,8 @@
    F(0xe765, VSUMG,   VRR_c, V,   0, 0, 0, 0, vsumg, 0, IF_VEC)
/* VECTOR SUM ACROSS QUADWORD */
    F(0xe767, VSUMQ,   VRR_c, V,   0, 0, 0, 0, vsumq, 0, IF_VEC)
/* VECTOR SUM ACROSS WORD */
    F(0xe764, VSUM,    VRR_c, V,   0, 0, 0, 0, vsum, 0, IF_VEC)

#ifndef CONFIG_USER_ONLY
/* COMPARE AND SWAP AND PURGE */
+29 −0
Original line number Diff line number Diff line
@@ -2313,3 +2313,32 @@ static DisasJumpType op_vsumq(DisasContext *s, DisasOps *o)
    tcg_temp_free_i64(tmpl);
    return DISAS_NEXT;
}

static DisasJumpType op_vsum(DisasContext *s, DisasOps *o)
{
    const uint8_t es = get_field(s->fields, m4);
    TCGv_i32 sum, tmp;
    uint8_t dst_idx;

    if (es > ES_16) {
        gen_program_exception(s, PGM_SPECIFICATION);
        return DISAS_NORETURN;
    }

    sum = tcg_temp_new_i32();
    tmp = tcg_temp_new_i32();
    for (dst_idx = 0; dst_idx < 4; dst_idx++) {
        uint8_t idx = dst_idx * NUM_VEC_ELEMENTS(es) / 4;
        const uint8_t max_idx = idx + NUM_VEC_ELEMENTS(es) / 4 - 1;

        read_vec_element_i32(sum, get_field(s->fields, v3), max_idx, es);
        for (; idx <= max_idx; idx++) {
            read_vec_element_i32(tmp, get_field(s->fields, v2), idx, es);
            tcg_gen_add_i32(sum, sum, tmp);
        }
        write_vec_element_i32(sum, get_field(s->fields, v1), dst_idx, ES_32);
    }
    tcg_temp_free_i32(sum);
    tcg_temp_free_i32(tmp);
    return DISAS_NEXT;
}