From nobody Mon Nov 10 11:19:19 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1555441108; cv=none; d=zoho.com; s=zohoarc; b=KmNoAAGiUxvScEIUrnx+LlswJ2QP5eZOEUP0MloKfrJ6bBU83G/k/LEyP1koB4Ytp/utGHU5fU9UvIGOgFsEGfg0AOh9XuVzjoUMpBz6X2gbNtoyXqSQTT/jvkx9+AdWRZ3KJ81Hv0/3sQkKwbmo6dwzXqTZcxtVC8qvkAMz2iI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1555441108; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=gR9XU9VuG+0l5IWlXQ/S8glUSiSvmO5sFHa2RUrbjXU=; b=g60OSS05s3JJ9gmdunEK45tdFanMekoHK8QgcEvzfhaFIa+fc9JRa+3k4r6czBsmPZlHA4fq+Q0m5AcJRwIcDdu+/SYftBUNNXpvnx1UPf7gKvYINuBGEdLc5wnkhv2z3U+J6JEX83NR5+ylLIO85BSCqfrY8pCXjDMnCxFSwCg= ARC-Authentication-Results: i=1; mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1555441108349957.0137634778808; Tue, 16 Apr 2019 11:58:28 -0700 (PDT) Received: from localhost ([127.0.0.1]:41090 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hGTHl-0000LK-9y for importer@patchew.org; Tue, 16 Apr 2019 14:58:25 -0400 Received: from eggs.gnu.org ([209.51.188.92]:54608) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hGTD9-0004nd-HD for qemu-devel@nongnu.org; Tue, 16 Apr 2019 14:53:40 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hGTD8-0004r8-88 for qemu-devel@nongnu.org; Tue, 16 Apr 2019 14:53:39 -0400 Received: from mx1.redhat.com ([209.132.183.28]:52336) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hGTD7-0004p0-RN; Tue, 16 Apr 2019 14:53:38 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2087F59469; Tue, 16 Apr 2019 18:53:37 +0000 (UTC) Received: from t460s.redhat.com (ovpn-116-105.ams2.redhat.com [10.36.116.105]) by smtp.corp.redhat.com (Postfix) with ESMTP id C3F4A5D707; Tue, 16 Apr 2019 18:53:35 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Date: Tue, 16 Apr 2019 20:52:33 +0200 Message-Id: <20190416185301.25344-14-david@redhat.com> In-Reply-To: <20190416185301.25344-1-david@redhat.com> References: <20190416185301.25344-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Tue, 16 Apr 2019 18:53:37 +0000 (UTC) Content-Transfer-Encoding: quoted-printable 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 v2 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" Implement it similar to VECTOR COUNT LEADING ZEROS. Signed-off-by: David Hildenbrand Reviewed-by: Richard Henderson --- 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 670677427c..60b8bd3c43 100644 --- a/target/s390x/helper.h +++ b/target/s390x/helper.h @@ -152,6 +152,8 @@ 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, i= 32) 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) =20 #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) =20 #ifndef CONFIG_USER_ONLY /* COMPARE AND SWAP AND PURGE */ diff --git a/target/s390x/translate_vx.inc.c b/target/s390x/translate_vx.in= c.c index 5f17dbec3f..ac1a2d77ad 100644 --- a/target/s390x/translate_vx.inc.c +++ b/target/s390x/translate_vx.inc.c @@ -1444,3 +1444,31 @@ static DisasJumpType op_vclz(DisasContext *s, DisasO= ps *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 =3D get_field(s->fields, m3); + static const GVecGen2 g[4] =3D { + { .fno =3D gen_helper_gvec_vctz8, }, + { .fno =3D gen_helper_gvec_vctz16, }, + { .fni4 =3D gen_ctz_i32, }, + { .fni8 =3D 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 016512547c..d1b1f28509 100644 --- a/target/s390x/vec_int_helper.c +++ b/target/s390x/vec_int_helper.c @@ -60,3 +60,17 @@ void HELPER(gvec_vclz##BITS)(void *v1, const void *v2, u= int32_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 =3D 0; i < (128 / BITS); i++) { = \ + const uint##BITS##_t a =3D s390_vec_read_element##BITS(v2, i); = \ + = \ + s390_vec_write_element##BITS(v1, i, a ? ctz32(a) : BITS); = \ + } = \ +} +DEF_VCTZ(8) +DEF_VCTZ(16) --=20 2.20.1