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s390x/tcg: Implement VECTOR LOAD LENGTHENED

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Take care of reading/indicating the 32-bit elements.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
This commit is contained in:
David Hildenbrand 2019-05-29 22:02:09 +02:00
parent 60d0ab29a1
commit 1a76e59da3
4 changed files with 58 additions and 0 deletions
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2
target/s390x/helper.h
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@ -278,6 +278,8 @@ DEF_HELPER_FLAGS_5(gvec_vfd64, TCG_CALL_NO_WG, void, ptr, cptr, cptr, env, i32)
DEF_HELPER_FLAGS_5(gvec_vfd64s, TCG_CALL_NO_WG, void, ptr, cptr, cptr, env, i32)
DEF_HELPER_FLAGS_4(gvec_vfi64, TCG_CALL_NO_WG, void, ptr, cptr, env, i32)
DEF_HELPER_FLAGS_4(gvec_vfi64s, TCG_CALL_NO_WG, void, ptr, cptr, env, i32)
DEF_HELPER_FLAGS_4(gvec_vfll32, TCG_CALL_NO_WG, void, ptr, cptr, env, i32)
DEF_HELPER_FLAGS_4(gvec_vfll32s, TCG_CALL_NO_WG, void, ptr, cptr, env, i32)
#ifndef CONFIG_USER_ONLY
DEF_HELPER_3(servc, i32, env, i64, i64)

2
target/s390x/insn-data.def
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@ -1230,6 +1230,8 @@
F(0xe7e5, VFD, VRR_c, V, 0, 0, 0, 0, vfa, 0, IF_VEC)
/* VECTOR LOAD FP INTEGER */
F(0xe7c7, VFI, VRR_a, V, 0, 0, 0, 0, vcdg, 0, IF_VEC)
/* VECTOR LOAD LENGTHENED */
F(0xe7c4, VFLL, VRR_a, V, 0, 0, 0, 0, vfll, 0, IF_VEC)
#ifndef CONFIG_USER_ONLY
/* COMPARE AND SWAP AND PURGE */

19
target/s390x/translate_vx.inc.c
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@ -2679,3 +2679,22 @@ static DisasJumpType op_vcdg(DisasContext *s, DisasOps *o)
deposit32(m4, 4, 4, erm), fn);
return DISAS_NEXT;
}
static DisasJumpType op_vfll(DisasContext *s, DisasOps *o)
{
const uint8_t fpf = get_field(s->fields, m3);
const uint8_t m4 = get_field(s->fields, m4);
gen_helper_gvec_2_ptr *fn = gen_helper_gvec_vfll32;
if (fpf != FPF_SHORT || extract32(m4, 0, 3)) {
gen_program_exception(s, PGM_SPECIFICATION);
return DISAS_NORETURN;
}
if (extract32(m4, 3, 1)) {
fn = gen_helper_gvec_vfll32s;
}
gen_gvec_2_ptr(get_field(s->fields, v1), get_field(s->fields, v2), cpu_env,
0, fn);
return DISAS_NEXT;
}

35
target/s390x/vec_fpu_helper.c
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@ -409,3 +409,38 @@ void HELPER(gvec_vfi64s)(void *v1, const void *v2, CPUS390XState *env,
vop64_2(v1, v2, env, true, XxC, erm, vfi64, GETPC());
}
static void vfll32(S390Vector *v1, const S390Vector *v2, CPUS390XState *env,
bool s, uintptr_t retaddr)
{
uint8_t vxc, vec_exc = 0;
S390Vector tmp = {};
int i;
for (i = 0; i < 2; i++) {
/* load from even element */
const float32 a = s390_vec_read_element32(v2, i * 2);
const uint64_t ret = float32_to_float64(a, &env->fpu_status);
s390_vec_write_element64(&tmp, i, ret);
/* indicate the source element */
vxc = check_ieee_exc(env, i * 2, false, &vec_exc);
if (s || vxc) {
break;
}
}
handle_ieee_exc(env, vxc, vec_exc, retaddr);
*v1 = tmp;
}
void HELPER(gvec_vfll32)(void *v1, const void *v2, CPUS390XState *env,
uint32_t desc)
{
vfll32(v1, v2, env, false, GETPC());
}
void HELPER(gvec_vfll32s)(void *v1, const void *v2, CPUS390XState *env,
uint32_t desc)
{
vfll32(v1, v2, env, true, GETPC());
}