From e257abc8de8011160fec3e85fcf54db9bc7ae2c6 Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Tue, 8 Jun 2021 11:23:32 +0200 Subject: [PATCH] s390x/tcg: Implement 32/128 bit for VECTOR FP MULTIPLY AND (ADD|SUBTRACT) Reviewed-by: Richard Henderson Signed-off-by: David Hildenbrand Message-Id: <20210608092337.12221-22-david@redhat.com> Signed-off-by: Cornelia Huck --- target/s390x/helper.h | 4 +++ target/s390x/translate_vx.c.inc | 47 ++++++++++++++++++++++++++++----- target/s390x/vec_fpu_helper.c | 44 +++++++++++++++++++++++++++++- 3 files changed, 87 insertions(+), 8 deletions(-) diff --git a/target/s390x/helper.h b/target/s390x/helper.h index bae73b9a56..2366756063 100644 --- a/target/s390x/helper.h +++ b/target/s390x/helper.h @@ -291,8 +291,12 @@ 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_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_6(gvec_vfma32, TCG_CALL_NO_WG, void, ptr, cptr, cptr, cptr, env, i32) DEF_HELPER_FLAGS_6(gvec_vfma64, TCG_CALL_NO_WG, void, ptr, cptr, cptr, cptr, env, i32) +DEF_HELPER_FLAGS_6(gvec_vfma128, TCG_CALL_NO_WG, void, ptr, cptr, cptr, cptr, env, i32) +DEF_HELPER_FLAGS_6(gvec_vfms32, TCG_CALL_NO_WG, void, ptr, cptr, cptr, cptr, env, i32) DEF_HELPER_FLAGS_6(gvec_vfms64, TCG_CALL_NO_WG, void, ptr, cptr, cptr, cptr, env, i32) +DEF_HELPER_FLAGS_6(gvec_vfms128, TCG_CALL_NO_WG, void, ptr, cptr, cptr, cptr, env, i32) DEF_HELPER_FLAGS_4(gvec_vfsq32, TCG_CALL_NO_WG, void, ptr, cptr, env, i32) DEF_HELPER_FLAGS_4(gvec_vfsq64, TCG_CALL_NO_WG, void, ptr, cptr, env, i32) DEF_HELPER_FLAGS_4(gvec_vfsq128, TCG_CALL_NO_WG, void, ptr, cptr, env, i32) diff --git a/target/s390x/translate_vx.c.inc b/target/s390x/translate_vx.c.inc index 765f75df9c..17d41b178f 100644 --- a/target/s390x/translate_vx.c.inc +++ b/target/s390x/translate_vx.c.inc @@ -2818,18 +2818,51 @@ static DisasJumpType op_vfma(DisasContext *s, DisasOps *o) { const uint8_t m5 = get_field(s, m5); const uint8_t fpf = get_field(s, m6); - gen_helper_gvec_4_ptr *fn; + gen_helper_gvec_4_ptr *fn = NULL; - if (fpf != FPF_LONG || extract32(m5, 0, 3)) { + if (s->fields.op2 == 0x8f) { + switch (fpf) { + case FPF_SHORT: + if (s390_has_feat(S390_FEAT_VECTOR_ENH)) { + fn = gen_helper_gvec_vfma32; + } + break; + case FPF_LONG: + fn = gen_helper_gvec_vfma64; + break; + case FPF_EXT: + if (s390_has_feat(S390_FEAT_VECTOR_ENH)) { + fn = gen_helper_gvec_vfma128; + } + break; + default: + break; + } + } else { + switch (fpf) { + case FPF_SHORT: + if (s390_has_feat(S390_FEAT_VECTOR_ENH)) { + fn = gen_helper_gvec_vfms32; + } + break; + case FPF_LONG: + fn = gen_helper_gvec_vfms64; + break; + case FPF_EXT: + if (s390_has_feat(S390_FEAT_VECTOR_ENH)) { + fn = gen_helper_gvec_vfms128; + } + break; + default: + break; + } + } + + if (!fn || extract32(m5, 0, 3)) { gen_program_exception(s, PGM_SPECIFICATION); return DISAS_NORETURN; } - if (s->fields.op2 == 0x8f) { - fn = gen_helper_gvec_vfma64; - } else { - fn = gen_helper_gvec_vfms64; - } gen_gvec_4_ptr(get_field(s, v1), get_field(s, v2), get_field(s, v3), get_field(s, v4), cpu_env, m5, fn); return DISAS_NEXT; diff --git a/target/s390x/vec_fpu_helper.c b/target/s390x/vec_fpu_helper.c index 6984f770ff..29ccc608dc 100644 --- a/target/s390x/vec_fpu_helper.c +++ b/target/s390x/vec_fpu_helper.c @@ -582,6 +582,30 @@ void HELPER(gvec_vflr128)(void *v1, const void *v2, CPUS390XState *env, s390_vec_write_float64(v1, 0, ret); } +static void vfma32(S390Vector *v1, const S390Vector *v2, const S390Vector *v3, + const S390Vector *v4, CPUS390XState *env, bool s, int flags, + uintptr_t retaddr) +{ + uint8_t vxc, vec_exc = 0; + S390Vector tmp = {}; + int i; + + for (i = 0; i < 4; i++) { + const float32 a = s390_vec_read_float32(v2, i); + const float32 b = s390_vec_read_float32(v3, i); + const float32 c = s390_vec_read_float32(v4, i); + float32 ret = float32_muladd(a, b, c, flags, &env->fpu_status); + + s390_vec_write_float32(&tmp, i, ret); + vxc = check_ieee_exc(env, i, false, &vec_exc); + if (s || vxc) { + break; + } + } + handle_ieee_exc(env, vxc, vec_exc, retaddr); + *v1 = tmp; +} + static void vfma64(S390Vector *v1, const S390Vector *v2, const S390Vector *v3, const S390Vector *v4, CPUS390XState *env, bool s, int flags, uintptr_t retaddr) @@ -606,6 +630,22 @@ static void vfma64(S390Vector *v1, const S390Vector *v2, const S390Vector *v3, *v1 = tmp; } +static void vfma128(S390Vector *v1, const S390Vector *v2, const S390Vector *v3, + const S390Vector *v4, CPUS390XState *env, bool s, int flags, + uintptr_t retaddr) +{ + const float128 a = s390_vec_read_float128(v2); + const float128 b = s390_vec_read_float128(v3); + const float128 c = s390_vec_read_float128(v4); + uint8_t vxc, vec_exc = 0; + float128 ret; + + ret = float128_muladd(a, b, c, flags, &env->fpu_status); + vxc = check_ieee_exc(env, 0, false, &vec_exc); + handle_ieee_exc(env, vxc, vec_exc, retaddr); + s390_vec_write_float128(v1, ret); +} + #define DEF_GVEC_VFMA_B(NAME, FLAGS, BITS) \ void HELPER(gvec_##NAME##BITS)(void *v1, const void *v2, const void *v3, \ const void *v4, CPUS390XState *env, \ @@ -617,7 +657,9 @@ void HELPER(gvec_##NAME##BITS)(void *v1, const void *v2, const void *v3, \ } #define DEF_GVEC_VFMA(NAME, FLAGS) \ - DEF_GVEC_VFMA_B(NAME, FLAGS, 64) + DEF_GVEC_VFMA_B(NAME, FLAGS, 32) \ + DEF_GVEC_VFMA_B(NAME, FLAGS, 64) \ + DEF_GVEC_VFMA_B(NAME, FLAGS, 128) DEF_GVEC_VFMA(vfma, 0) DEF_GVEC_VFMA(vfms, float_muladd_negate_c) -- 2.39.5