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s390x/tcg: Implement VECTOR STORE MULTIPLE 

Similar to VECTOR LOAD MULTIPLE, just the opposite direction. Probe
write access first.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20190307121539.12842-31-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
master
David Hildenbrand 2019-03-07 13:15:37 +01:00 committed by Cornelia Huck
parent 7b9a236ea7
commit 29b8bcf140
2 changed files with 32 additions and 0 deletions
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2
target/s390x/insn-data.def
View File

@ -1041,6 +1041,8 @@
E(0xe709, VSTEH, VRX, V, la2, 0, 0, 0, vste, 0, ES_16, IF_VEC)
E(0xe70b, VSTEF, VRX, V, la2, 0, 0, 0, vste, 0, ES_32, IF_VEC)
E(0xe70a, VSTEG, VRX, V, la2, 0, 0, 0, vste, 0, ES_64, IF_VEC)
/* VECTOR STORE MULTIPLE */
F(0xe73e, VSTM, VRS_a, V, la2, 0, 0, 0, vstm, 0, IF_VEC)
#ifndef CONFIG_USER_ONLY
/* COMPARE AND SWAP AND PURGE */

30
target/s390x/translate_vx.inc.c
View File

@ -852,3 +852,33 @@ static DisasJumpType op_vste(DisasContext *s, DisasOps *o)
tcg_temp_free_i64(tmp);
return DISAS_NEXT;
}
static DisasJumpType op_vstm(DisasContext *s, DisasOps *o)
{
const uint8_t v3 = get_field(s->fields, v3);
uint8_t v1 = get_field(s->fields, v1);
TCGv_i64 tmp;
while (v3 < v1 || (v3 - v1 + 1) > 16) {
gen_program_exception(s, PGM_SPECIFICATION);
return DISAS_NORETURN;
}
/* Probe write access before actually modifying memory */
tmp = tcg_const_i64((v3 - v1 + 1) * 16);
gen_helper_probe_write_access(cpu_env, o->addr1, tmp);
for (;; v1++) {
read_vec_element_i64(tmp, v1, 0, ES_64);
tcg_gen_qemu_st_i64(tmp, o->addr1, get_mem_index(s), MO_TEQ);
gen_addi_and_wrap_i64(s, o->addr1, o->addr1, 8);
read_vec_element_i64(tmp, v1, 1, ES_64);
tcg_gen_qemu_st_i64(tmp, o->addr1, get_mem_index(s), MO_TEQ);
if (v1 == v3) {
break;
}
gen_addi_and_wrap_i64(s, o->addr1, o->addr1, 8);
}
tcg_temp_free_i64(tmp);
return DISAS_NEXT;
}