From c64c598402c0e20cf60aaad43700eb80eed889e4 Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Wed, 29 May 2019 22:17:09 +0200 Subject: [PATCH] s390x/tcg: Implement VECTOR FP MULTIPLY AND (ADD|SUBTRACT) Reviewed-by: Richard Henderson Signed-off-by: David Hildenbrand --- target/s390x/helper.h | 4 +++ target/s390x/insn-data.def | 4 +++ target/s390x/translate_vx.inc.c | 23 ++++++++++++++++ target/s390x/vec_fpu_helper.c | 48 +++++++++++++++++++++++++++++++++ 4 files changed, 79 insertions(+) diff --git a/target/s390x/helper.h b/target/s390x/helper.h index 22e02a0178..bcaabb91a5 100644 --- a/target/s390x/helper.h +++ b/target/s390x/helper.h @@ -284,6 +284,10 @@ DEF_HELPER_FLAGS_4(gvec_vflr64, TCG_CALL_NO_WG, void, ptr, cptr, env, i32) DEF_HELPER_FLAGS_4(gvec_vflr64s, TCG_CALL_NO_WG, void, ptr, cptr, env, i32) DEF_HELPER_FLAGS_5(gvec_vfm64, TCG_CALL_NO_WG, void, ptr, cptr, cptr, env, i32) DEF_HELPER_FLAGS_5(gvec_vfm64s, TCG_CALL_NO_WG, void, ptr, 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_vfma64s, 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_vfms64s, TCG_CALL_NO_WG, void, ptr, cptr, cptr, cptr, env, i32) #ifndef CONFIG_USER_ONLY DEF_HELPER_3(servc, i32, env, i64, i64) diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def index e56059ac34..e86ade9e44 100644 --- a/target/s390x/insn-data.def +++ b/target/s390x/insn-data.def @@ -1236,6 +1236,10 @@ F(0xe7c5, VFLR, VRR_a, V, 0, 0, 0, 0, vcdg, 0, IF_VEC) /* VECTOR FP MULTIPLY */ F(0xe7e7, VFM, VRR_c, V, 0, 0, 0, 0, vfa, 0, IF_VEC) +/* VECTOR FP MULTIPLY AND ADD */ + F(0xe78f, VFMA, VRR_e, V, 0, 0, 0, 0, vfma, 0, IF_VEC) +/* VECTOR FP MULTIPLY AND SUBTRACT */ + F(0xe78e, VFMS, VRR_e, V, 0, 0, 0, 0, vfma, 0, IF_VEC) #ifndef CONFIG_USER_ONLY /* COMPARE AND SWAP AND PURGE */ diff --git a/target/s390x/translate_vx.inc.c b/target/s390x/translate_vx.inc.c index ae31a327cf..b624c7a8aa 100644 --- a/target/s390x/translate_vx.inc.c +++ b/target/s390x/translate_vx.inc.c @@ -2704,3 +2704,26 @@ static DisasJumpType op_vfll(DisasContext *s, DisasOps *o) 0, fn); return DISAS_NEXT; } + +static DisasJumpType op_vfma(DisasContext *s, DisasOps *o) +{ + const uint8_t m5 = get_field(s->fields, m5); + const uint8_t fpf = get_field(s->fields, m6); + const bool se = extract32(m5, 3, 1); + gen_helper_gvec_4_ptr *fn; + + if (fpf != FPF_LONG || extract32(m5, 0, 3)) { + gen_program_exception(s, PGM_SPECIFICATION); + return DISAS_NORETURN; + } + + if (s->fields->op2 == 0x8f) { + fn = se ? gen_helper_gvec_vfma64s : gen_helper_gvec_vfma64; + } else { + fn = se ? gen_helper_gvec_vfms64s : gen_helper_gvec_vfms64; + } + gen_gvec_4_ptr(get_field(s->fields, v1), get_field(s->fields, v2), + get_field(s->fields, v3), get_field(s->fields, v4), cpu_env, + 0, fn); + return DISAS_NEXT; +} diff --git a/target/s390x/vec_fpu_helper.c b/target/s390x/vec_fpu_helper.c index 57b7fe4aff..7993a6fafa 100644 --- a/target/s390x/vec_fpu_helper.c +++ b/target/s390x/vec_fpu_helper.c @@ -504,3 +504,51 @@ void HELPER(gvec_vfm64s)(void *v1, const void *v2, const void *v3, { vop64_3(v1, v2, v3, env, true, vfm64, GETPC()); } + +static void vfma64(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 < 2; i++) { + const uint64_t a = s390_vec_read_element64(v2, i); + const uint64_t b = s390_vec_read_element64(v3, i); + const uint64_t c = s390_vec_read_element64(v4, i); + uint64_t ret = float64_muladd(a, b, c, flags, &env->fpu_status); + + s390_vec_write_element64(&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; +} + +void HELPER(gvec_vfma64)(void *v1, const void *v2, const void *v3, + const void *v4, CPUS390XState *env, uint32_t desc) +{ + vfma64(v1, v2, v3, v4, env, false, 0, GETPC()); +} + +void HELPER(gvec_vfma64s)(void *v1, const void *v2, const void *v3, + const void *v4, CPUS390XState *env, uint32_t desc) +{ + vfma64(v1, v2, v3, v4, env, true, 0, GETPC()); +} + +void HELPER(gvec_vfms64)(void *v1, const void *v2, const void *v3, + const void *v4, CPUS390XState *env, uint32_t desc) +{ + vfma64(v1, v2, v3, v4, env, false, float_muladd_negate_c, GETPC()); +} + +void HELPER(gvec_vfms64s)(void *v1, const void *v2, const void *v3, + const void *v4, CPUS390XState *env, uint32_t desc) +{ + vfma64(v1, v2, v3, v4, env, true, float_muladd_negate_c, GETPC()); +}