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s390x/tcg: Implement VECTOR GENERATE MASK 

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

Reviewed-by: Richard Henderson <richard.henderson@linaro.org
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20190307121539.12842-7-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
David Hildenbrand 2019-03-07 13:15:13 +01:00 committed by Cornelia Huck
parent 64052062a4
commit eeb11a90a6
2 changed files with 49 additions and 0 deletions
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2
target/s390x/insn-data.def
View File

@ -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 */

47
target/s390x/translate_vx.inc.c
View File

@ -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;
}