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s390x/tcg: Implement VECTOR POPULATION COUNT

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Similar to VECTOR COUNT TRAILING ZEROES.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
This commit is contained in:
David Hildenbrand 2019-04-11 11:14:49 +02:00
parent a014bcc7bc
commit c3838aaae0
4 changed files with 37 additions and 0 deletions
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2
target/s390x/helper.h
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@ -196,6 +196,8 @@ DEF_HELPER_FLAGS_4(gvec_vmo32, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
DEF_HELPER_FLAGS_4(gvec_vmlo8, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
DEF_HELPER_FLAGS_4(gvec_vmlo16, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
DEF_HELPER_FLAGS_4(gvec_vmlo32, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32)
DEF_HELPER_FLAGS_3(gvec_vpopct8, TCG_CALL_NO_RWG, void, ptr, cptr, i32)
DEF_HELPER_FLAGS_3(gvec_vpopct16, TCG_CALL_NO_RWG, void, ptr, cptr, i32)
#ifndef CONFIG_USER_ONLY
DEF_HELPER_3(servc, i32, env, i64, i64)

2
target/s390x/insn-data.def
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@ -1144,6 +1144,8 @@
F(0xe76a, VO, VRR_c, V, 0, 0, 0, 0, vo, 0, IF_VEC)
/* VECTOR OR WITH COMPLEMENT */
F(0xe76f, VOC, VRR_c, VE, 0, 0, 0, 0, voc, 0, IF_VEC)
/* VECTOR POPULATION COUNT */
F(0xe750, VPOPCT, VRR_a, V, 0, 0, 0, 0, vpopct, 0, IF_VEC)
#ifndef CONFIG_USER_ONLY
/* COMPARE AND SWAP AND PURGE */

19
target/s390x/translate_vx.inc.c
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@ -1826,3 +1826,22 @@ static DisasJumpType op_voc(DisasContext *s, DisasOps *o)
get_field(s->fields, v3));
return DISAS_NEXT;
}
static DisasJumpType op_vpopct(DisasContext *s, DisasOps *o)
{
const uint8_t es = get_field(s->fields, m3);
static const GVecGen2 g[4] = {
{ .fno = gen_helper_gvec_vpopct8, },
{ .fno = gen_helper_gvec_vpopct16, },
{ .fni4 = tcg_gen_ctpop_i32, },
{ .fni8 = tcg_gen_ctpop_i64, },
};
if (es > ES_64 || (es != ES_8 && !s390_has_feat(S390_FEAT_VECTOR_ENH))) {
gen_program_exception(s, PGM_SPECIFICATION);
return DISAS_NORETURN;
}
gen_gvec_2(get_field(s->fields, v1), get_field(s->fields, v2), &g[es]);
return DISAS_NEXT;
}

14
target/s390x/vec_int_helper.c
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@ -464,3 +464,17 @@ void HELPER(gvec_vmlo##BITS)(void *v1, const void *v2, const void *v3, \
DEF_VMLO(8, 16)
DEF_VMLO(16, 32)
DEF_VMLO(32, 64)
#define DEF_VPOPCT(BITS) \
void HELPER(gvec_vpopct##BITS)(void *v1, const void *v2, uint32_t desc) \
{ \
int i; \
\
for (i = 0; i < (128 / BITS); i++) { \
const uint##BITS##_t a = s390_vec_read_element##BITS(v2, i); \
\
s390_vec_write_element##BITS(v1, i, ctpop32(a)); \
} \
}
DEF_VPOPCT(8)
DEF_VPOPCT(16)