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s390x/tcg: Implement 128 bit for VECTOR FP LOAD ROUNDED

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128 bit -> 64 bit, there is only a single element to process.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210608092337.12221-19-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
David Hildenbrand 2021-06-08 11:23:29 +02:00 committed by Cornelia Huck
parent 2e96005ed8
commit 9cbc8be05a
3 changed files with 30 additions and 1 deletions
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1
target/s390x/helper.h
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@ -287,6 +287,7 @@ DEF_HELPER_FLAGS_4(gvec_vfi128, 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_vfll32, TCG_CALL_NO_WG, void, ptr, cptr, env, i32)
DEF_HELPER_FLAGS_4(gvec_vfll64, TCG_CALL_NO_WG, void, ptr, cptr, env, i32) DEF_HELPER_FLAGS_4(gvec_vfll64, TCG_CALL_NO_WG, void, ptr, cptr, env, i32)
DEF_HELPER_FLAGS_4(gvec_vflr64, TCG_CALL_NO_WG, void, ptr, cptr, env, i32) DEF_HELPER_FLAGS_4(gvec_vflr64, TCG_CALL_NO_WG, void, ptr, cptr, env, i32)
DEF_HELPER_FLAGS_4(gvec_vflr128, TCG_CALL_NO_WG, void, ptr, cptr, env, i32)
DEF_HELPER_FLAGS_5(gvec_vfm32, TCG_CALL_NO_WG, void, ptr, cptr, cptr, env, i32) DEF_HELPER_FLAGS_5(gvec_vfm32, TCG_CALL_NO_WG, void, ptr, cptr, cptr, env, i32)
DEF_HELPER_FLAGS_5(gvec_vfm64, TCG_CALL_NO_WG, void, ptr, cptr, cptr, env, i32) DEF_HELPER_FLAGS_5(gvec_vfm64, TCG_CALL_NO_WG, void, ptr, cptr, cptr, env, i32)
DEF_HELPER_FLAGS_5(gvec_vfm128, TCG_CALL_NO_WG, void, ptr, cptr, cptr, env, i32) DEF_HELPER_FLAGS_5(gvec_vfm128, TCG_CALL_NO_WG, void, ptr, cptr, cptr, env, i32)

11
target/s390x/translate_vx.c.inc
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@ -2759,8 +2759,17 @@ static DisasJumpType op_vcdg(DisasContext *s, DisasOps *o)
} }
break; break;
case 0xc5: case 0xc5:
if (fpf == FPF_LONG) { switch (fpf) {
case FPF_LONG:
fn = gen_helper_gvec_vflr64; fn = gen_helper_gvec_vflr64;
break;
case FPF_EXT:
if (s390_has_feat(S390_FEAT_VECTOR_ENH)) {
fn = gen_helper_gvec_vflr128;
}
break;
default:
break;
} }
break; break;
default: default:

19
target/s390x/vec_fpu_helper.c
View File

@ -563,6 +563,25 @@ void HELPER(gvec_vflr64)(void *v1, const void *v2, CPUS390XState *env,
*(S390Vector *)v1 = tmp; *(S390Vector *)v1 = tmp;
} }
void HELPER(gvec_vflr128)(void *v1, const void *v2, CPUS390XState *env,
uint32_t desc)
{
const uint8_t erm = extract32(simd_data(desc), 4, 4);
const bool XxC = extract32(simd_data(desc), 2, 1);
uint8_t vxc, vec_exc = 0;
int old_mode;
float64 ret;
old_mode = s390_swap_bfp_rounding_mode(env, erm);
ret = float128_to_float64(s390_vec_read_float128(v2), &env->fpu_status);
vxc = check_ieee_exc(env, 0, XxC, &vec_exc);
s390_restore_bfp_rounding_mode(env, old_mode);
handle_ieee_exc(env, vxc, vec_exc, GETPC());
/* place at even element, odd element is unpredictable */
s390_vec_write_float64(v1, 0, ret);
}
static void vfma64(S390Vector *v1, const S390Vector *v2, const S390Vector *v3, static void vfma64(S390Vector *v1, const S390Vector *v2, const S390Vector *v3,
const S390Vector *v4, CPUS390XState *env, bool s, int flags, const S390Vector *v4, CPUS390XState *env, bool s, int flags,
uintptr_t retaddr) uintptr_t retaddr)