s390x/tcg: Implement 32/128 bit for VECTOR FP MULTIPLY AND (ADD|SUBTRACT)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20210608092337.12221-22-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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@ -291,8 +291,12 @@ DEF_HELPER_FLAGS_4(gvec_vflr128, TCG_CALL_NO_WG, void, ptr, cptr, env, i32)
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DEF_HELPER_FLAGS_5(gvec_vfm32, TCG_CALL_NO_WG, void, ptr, cptr, cptr, env, i32)
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DEF_HELPER_FLAGS_5(gvec_vfm64, TCG_CALL_NO_WG, void, ptr, cptr, cptr, env, i32)
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DEF_HELPER_FLAGS_5(gvec_vfm128, TCG_CALL_NO_WG, void, ptr, cptr, cptr, env, i32)
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DEF_HELPER_FLAGS_6(gvec_vfma32, TCG_CALL_NO_WG, void, ptr, cptr, cptr, cptr, env, i32)
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DEF_HELPER_FLAGS_6(gvec_vfma64, TCG_CALL_NO_WG, void, ptr, cptr, cptr, cptr, env, i32)
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DEF_HELPER_FLAGS_6(gvec_vfma128, TCG_CALL_NO_WG, void, ptr, cptr, cptr, cptr, env, i32)
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DEF_HELPER_FLAGS_6(gvec_vfms32, TCG_CALL_NO_WG, void, ptr, cptr, cptr, cptr, env, i32)
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DEF_HELPER_FLAGS_6(gvec_vfms64, TCG_CALL_NO_WG, void, ptr, cptr, cptr, cptr, env, i32)
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DEF_HELPER_FLAGS_6(gvec_vfms128, TCG_CALL_NO_WG, void, ptr, cptr, cptr, cptr, env, i32)
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DEF_HELPER_FLAGS_4(gvec_vfsq32, TCG_CALL_NO_WG, void, ptr, cptr, env, i32)
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DEF_HELPER_FLAGS_4(gvec_vfsq64, TCG_CALL_NO_WG, void, ptr, cptr, env, i32)
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DEF_HELPER_FLAGS_4(gvec_vfsq128, TCG_CALL_NO_WG, void, ptr, cptr, env, i32)
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@ -2818,18 +2818,51 @@ static DisasJumpType op_vfma(DisasContext *s, DisasOps *o)
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{
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const uint8_t m5 = get_field(s, m5);
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const uint8_t fpf = get_field(s, m6);
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gen_helper_gvec_4_ptr *fn;
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gen_helper_gvec_4_ptr *fn = NULL;
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if (fpf != FPF_LONG || extract32(m5, 0, 3)) {
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if (s->fields.op2 == 0x8f) {
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switch (fpf) {
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case FPF_SHORT:
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if (s390_has_feat(S390_FEAT_VECTOR_ENH)) {
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fn = gen_helper_gvec_vfma32;
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}
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break;
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case FPF_LONG:
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fn = gen_helper_gvec_vfma64;
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break;
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case FPF_EXT:
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if (s390_has_feat(S390_FEAT_VECTOR_ENH)) {
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fn = gen_helper_gvec_vfma128;
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}
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break;
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default:
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break;
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}
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} else {
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switch (fpf) {
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case FPF_SHORT:
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if (s390_has_feat(S390_FEAT_VECTOR_ENH)) {
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fn = gen_helper_gvec_vfms32;
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}
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break;
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case FPF_LONG:
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fn = gen_helper_gvec_vfms64;
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break;
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case FPF_EXT:
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if (s390_has_feat(S390_FEAT_VECTOR_ENH)) {
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fn = gen_helper_gvec_vfms128;
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}
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break;
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default:
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break;
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}
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}
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if (!fn || extract32(m5, 0, 3)) {
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gen_program_exception(s, PGM_SPECIFICATION);
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return DISAS_NORETURN;
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}
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if (s->fields.op2 == 0x8f) {
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fn = gen_helper_gvec_vfma64;
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} else {
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fn = gen_helper_gvec_vfms64;
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}
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gen_gvec_4_ptr(get_field(s, v1), get_field(s, v2),
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get_field(s, v3), get_field(s, v4), cpu_env, m5, fn);
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return DISAS_NEXT;
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@ -582,6 +582,30 @@ void HELPER(gvec_vflr128)(void *v1, const void *v2, CPUS390XState *env,
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s390_vec_write_float64(v1, 0, ret);
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}
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static void vfma32(S390Vector *v1, const S390Vector *v2, const S390Vector *v3,
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const S390Vector *v4, CPUS390XState *env, bool s, int flags,
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uintptr_t retaddr)
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{
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uint8_t vxc, vec_exc = 0;
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S390Vector tmp = {};
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int i;
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for (i = 0; i < 4; i++) {
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const float32 a = s390_vec_read_float32(v2, i);
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const float32 b = s390_vec_read_float32(v3, i);
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const float32 c = s390_vec_read_float32(v4, i);
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float32 ret = float32_muladd(a, b, c, flags, &env->fpu_status);
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s390_vec_write_float32(&tmp, i, ret);
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vxc = check_ieee_exc(env, i, false, &vec_exc);
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if (s || vxc) {
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break;
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}
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}
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handle_ieee_exc(env, vxc, vec_exc, retaddr);
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*v1 = tmp;
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}
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static void vfma64(S390Vector *v1, const S390Vector *v2, const S390Vector *v3,
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const S390Vector *v4, CPUS390XState *env, bool s, int flags,
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uintptr_t retaddr)
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@ -606,6 +630,22 @@ static void vfma64(S390Vector *v1, const S390Vector *v2, const S390Vector *v3,
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*v1 = tmp;
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}
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static void vfma128(S390Vector *v1, const S390Vector *v2, const S390Vector *v3,
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const S390Vector *v4, CPUS390XState *env, bool s, int flags,
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uintptr_t retaddr)
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{
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const float128 a = s390_vec_read_float128(v2);
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const float128 b = s390_vec_read_float128(v3);
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const float128 c = s390_vec_read_float128(v4);
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uint8_t vxc, vec_exc = 0;
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float128 ret;
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ret = float128_muladd(a, b, c, flags, &env->fpu_status);
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vxc = check_ieee_exc(env, 0, false, &vec_exc);
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handle_ieee_exc(env, vxc, vec_exc, retaddr);
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s390_vec_write_float128(v1, ret);
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}
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#define DEF_GVEC_VFMA_B(NAME, FLAGS, BITS) \
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void HELPER(gvec_##NAME##BITS)(void *v1, const void *v2, const void *v3, \
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const void *v4, CPUS390XState *env, \
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@ -617,7 +657,9 @@ void HELPER(gvec_##NAME##BITS)(void *v1, const void *v2, const void *v3, \
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}
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#define DEF_GVEC_VFMA(NAME, FLAGS) \
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DEF_GVEC_VFMA_B(NAME, FLAGS, 64)
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DEF_GVEC_VFMA_B(NAME, FLAGS, 32) \
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DEF_GVEC_VFMA_B(NAME, FLAGS, 64) \
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DEF_GVEC_VFMA_B(NAME, FLAGS, 128)
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DEF_GVEC_VFMA(vfma, 0)
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DEF_GVEC_VFMA(vfms, float_muladd_negate_c)
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