Commit eeb11a90 authored by David Hildenbrand's avatar David Hildenbrand Committed by Cornelia Huck
Browse files

s390x/tcg: Implement VECTOR GENERATE MASK 



Add gen_gvec_dupi() for handling duplication of immediates, so it can
be reused later.

Reviewed-by: default avatarRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: default avatarDavid Hildenbrand <david@redhat.com>
Message-Id: <20190307121539.12842-7-david@redhat.com>
Signed-off-by: default avatarCornelia Huck <cohuck@redhat.com>
parent 64052062

target/s390x/insn-data.def

+2 −0
Original line number Diff line number Diff line
@@ -979,6 +979,8 @@ 
    E(0xe712, VGEG,    VRV,   V,   la2, 0, 0, 0, vge, 0, ES_64, IF_VEC)

/* VECTOR GENERATE BYTE MASK */

    F(0xe744, VGBM,    VRI_a, V,   0, 0, 0, 0, vgbm, 0, IF_VEC)

/* VECTOR GENERATE MASK */

    F(0xe746, VGM,     VRI_b, V,   0, 0, 0, 0, vgm, 0, IF_VEC)



#ifndef CONFIG_USER_ONLY

/* COMPARE AND SWAP AND PURGE */

target/s390x/translate_vx.inc.c

+47 −0
Original line number Diff line number Diff line
@@ -44,6 +44,7 @@ 


#define NUM_VEC_ELEMENT_BYTES(es) (1 << (es))

#define NUM_VEC_ELEMENTS(es) (16 / NUM_VEC_ELEMENT_BYTES(es))

#define NUM_VEC_ELEMENT_BITS(es) (NUM_VEC_ELEMENT_BYTES(es) * BITS_PER_BYTE)



#define ES_8    MO_8

#define ES_16   MO_16
@@ -115,6 +116,26 @@ static void write_vec_element_i64(TCGv_i64 src, int reg, uint8_t enr, 
#define gen_gvec_dup64i(v1, c) \

    tcg_gen_gvec_dup64i(vec_full_reg_offset(v1), 16, 16, c)



static void gen_gvec_dupi(uint8_t es, uint8_t reg, uint64_t c)

{

    switch (es) {

    case ES_8:

        tcg_gen_gvec_dup8i(vec_full_reg_offset(reg), 16, 16, c);

        break;

    case ES_16:

        tcg_gen_gvec_dup16i(vec_full_reg_offset(reg), 16, 16, c);

        break;

    case ES_32:

        tcg_gen_gvec_dup32i(vec_full_reg_offset(reg), 16, 16, c);

        break;

    case ES_64:

        gen_gvec_dup64i(reg, c);

        break;

    default:

        g_assert_not_reached();

    }

}



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

{

    const uint8_t es = s->insn->data;
@@ -172,3 +193,29 @@ static DisasJumpType op_vgbm(DisasContext *s, DisasOps *o) 
    }

    return DISAS_NEXT;

}



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

{

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

    const uint8_t bits = NUM_VEC_ELEMENT_BITS(es);

    const uint8_t i2 = get_field(s->fields, i2) & (bits - 1);

    const uint8_t i3 = get_field(s->fields, i3) & (bits - 1);

    uint64_t mask = 0;

    int i;



    if (es > ES_64) {

        gen_program_exception(s, PGM_SPECIFICATION);

        return DISAS_NORETURN;

    }



    /* generate the mask - take care of wrapping */

    for (i = i2; ; i = (i + 1) % bits) {

        mask |= 1ull << (bits - i - 1);

        if (i == i3) {

            break;

        }

    }



    gen_gvec_dupi(es, get_field(s->fields, v1), mask);

    return DISAS_NEXT;

}