From patchwork Thu Apr 11 10:08:08 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 1083899 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 44fyS16w3Fz9s47 for ; Thu, 11 Apr 2019 20:48:33 +1000 (AEST) Received: from localhost ([127.0.0.1]:46078 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hEXFv-0007w4-Ro for incoming@patchwork.ozlabs.org; Thu, 11 Apr 2019 06:48:31 -0400 Received: from eggs.gnu.org ([209.51.188.92]:54884) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hEWsa-000390-97 for qemu-devel@nongnu.org; Thu, 11 Apr 2019 06:24:25 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hEWdn-0007Fg-Tq for qemu-devel@nongnu.org; Thu, 11 Apr 2019 06:09:08 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56024) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hEWdn-0007FJ-In; Thu, 11 Apr 2019 06:09:07 -0400 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id D7A6E308CFAF; Thu, 11 Apr 2019 10:09:06 +0000 (UTC) Received: from t460s.redhat.com (unknown [10.36.118.43]) by smtp.corp.redhat.com (Postfix) with ESMTP id 86DF71001E71; Thu, 11 Apr 2019 10:09:05 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Date: Thu, 11 Apr 2019 12:08:08 +0200 Message-Id: <20190411100836.646-14-david@redhat.com> In-Reply-To: <20190411100836.646-1-david@redhat.com> References: <20190411100836.646-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.44]); Thu, 11 Apr 2019 10:09:06 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v1 13/41] s390x/tcg: Implement VECTOR COUNT TRAILING ZEROS X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-s390x@nongnu.org, Cornelia Huck , David Hildenbrand , Thomas Huth , Richard Henderson Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Implement it similar to VECTOR COUNT LEADING ZEROS. Signed-off-by: David Hildenbrand --- target/s390x/helper.h | 2 ++ target/s390x/insn-data.def | 2 ++ target/s390x/translate_vx.inc.c | 28 ++++++++++++++++++++++++++++ target/s390x/vec_int_helper.c | 14 ++++++++++++++ 4 files changed, 46 insertions(+) diff --git a/target/s390x/helper.h b/target/s390x/helper.h index e25e1467ae..83e5070821 100644 --- a/target/s390x/helper.h +++ b/target/s390x/helper.h @@ -154,6 +154,8 @@ DEF_HELPER_FLAGS_4(gvec_vavgl8, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32) DEF_HELPER_FLAGS_4(gvec_vavgl16, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, i32) DEF_HELPER_FLAGS_3(gvec_vclz8, TCG_CALL_NO_RWG, void, ptr, cptr, i32) DEF_HELPER_FLAGS_3(gvec_vclz16, TCG_CALL_NO_RWG, void, ptr, cptr, i32) +DEF_HELPER_FLAGS_3(gvec_vctz8, TCG_CALL_NO_RWG, void, ptr, cptr, i32) +DEF_HELPER_FLAGS_3(gvec_vctz16, TCG_CALL_NO_RWG, void, ptr, cptr, 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 be3c07aafb..a355b7f62f 100644 --- a/target/s390x/insn-data.def +++ b/target/s390x/insn-data.def @@ -1086,6 +1086,8 @@ E(0xe7f9, VCHL, VRR_b, V, 0, 0, 0, 0, vc, 0, TCG_COND_GTU, IF_VEC) /* VECTOR COUNT LEADING ZEROS */ F(0xe753, VCLZ, VRR_a, V, 0, 0, 0, 0, vclz, 0, IF_VEC) +/* VECTOR COUNT TRAILING ZEROS */ + F(0xe752, VCTZ, VRR_a, V, 0, 0, 0, 0, vctz, 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 299924a7cc..23d5870dc5 100644 --- a/target/s390x/translate_vx.inc.c +++ b/target/s390x/translate_vx.inc.c @@ -1406,3 +1406,31 @@ static DisasJumpType op_vclz(DisasContext *s, DisasOps *o) gen_gvec_2(get_field(s->fields, v1), get_field(s->fields, v2), &g[es]); return DISAS_NEXT; } + +static void gen_ctz_i32(TCGv_i32 d, TCGv_i32 a) +{ + tcg_gen_ctzi_i32(d, a, 32); +} + +static void gen_ctz_i64(TCGv_i64 d, TCGv_i64 a) +{ + tcg_gen_ctzi_i64(d, a, 64); +} + +static DisasJumpType op_vctz(DisasContext *s, DisasOps *o) +{ + const uint8_t es = get_field(s->fields, m3); + static const GVecGen2 g[4] = { + { .fno = gen_helper_gvec_vctz8, }, + { .fno = gen_helper_gvec_vctz16, }, + { .fni4 = gen_ctz_i32, }, + { .fni8 = gen_ctz_i64, }, + }; + + if (es > ES_64) { + gen_program_exception(s, PGM_SPECIFICATION); + return DISAS_NORETURN; + } + gen_gvec_2(get_field(s->fields, v1), get_field(s->fields, v2), &g[es]); + return DISAS_NEXT; +} diff --git a/target/s390x/vec_int_helper.c b/target/s390x/vec_int_helper.c index 366962cfbe..c589f92765 100644 --- a/target/s390x/vec_int_helper.c +++ b/target/s390x/vec_int_helper.c @@ -107,3 +107,17 @@ void HELPER(gvec_vclz##BITS)(void *v1, const void *v2, uint32_t desc) \ } DEF_VCLZ(8) DEF_VCLZ(16) + +#define DEF_VCTZ(BITS) \ +void HELPER(gvec_vctz##BITS)(void *v1, const void *v2, uint32_t desc) \ +{ \ + int i; \ + \ + for (i = 0; i < (128 / BITS); i++) { \ + const uint##BITS##_t a = s390_vec_read_element##BITS(v2, i); \ + \ + s390_vec_write_element##BITS(v1, i, ctz32(a)); \ + } \ +} +DEF_VCTZ(8) +DEF_VCTZ(16)