From patchwork Mon May 20 17:02:48 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cornelia Huck X-Patchwork-Id: 1102264 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 4575gX1t9Vz9sBK for ; Tue, 21 May 2019 03:37:12 +1000 (AEST) Received: from localhost ([127.0.0.1]:39329 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hSmDm-0002ty-2B for incoming@patchwork.ozlabs.org; Mon, 20 May 2019 13:37:10 -0400 Received: from eggs.gnu.org ([209.51.188.92]:55160) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hSlo5-00063R-Mc for qemu-devel@nongnu.org; Mon, 20 May 2019 13:10:39 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hSlo4-0005KM-2P for qemu-devel@nongnu.org; Mon, 20 May 2019 13:10:37 -0400 Received: from mx1.redhat.com ([209.132.183.28]:53500) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hSlo3-0005JT-TS; Mon, 20 May 2019 13:10:36 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id E2D6A3082E8E; Mon, 20 May 2019 17:10:22 +0000 (UTC) Received: from localhost (ovpn-204-110.brq.redhat.com [10.40.204.110]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 38BB05C297; Mon, 20 May 2019 17:10:16 +0000 (UTC) From: Cornelia Huck To: Peter Maydell Date: Mon, 20 May 2019 19:02:48 +0200 Message-Id: <20190520170302.13643-41-cohuck@redhat.com> In-Reply-To: <20190520170302.13643-1-cohuck@redhat.com> References: <20190520170302.13643-1-cohuck@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.46]); Mon, 20 May 2019 17:10:27 +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] [PULL 40/54] s390x/tcg: Implement VECTOR SUBTRACT WITH BORROW INDICATION 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, Richard Henderson , qemu-devel@nongnu.org, David Hildenbrand Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: David Hildenbrand Fairly easy as only 128-bit handling is required. Simply perform the subtraction and then subtract the borrow. Reviewed-by: Richard Henderson Signed-off-by: David Hildenbrand --- target/s390x/insn-data.def | 2 ++ target/s390x/translate_vx.inc.c | 26 ++++++++++++++++++++++++++ 2 files changed, 28 insertions(+) diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def index 94de3c9c7d30..a60d8531dc52 100644 --- a/target/s390x/insn-data.def +++ b/target/s390x/insn-data.def @@ -1178,6 +1178,8 @@ F(0xe7f7, VS, VRR_c, V, 0, 0, 0, 0, vs, 0, IF_VEC) /* VECTOR SUBTRACT COMPUTE BORROW INDICATION */ F(0xe7f5, VSCBI, VRR_c, V, 0, 0, 0, 0, vscbi, 0, IF_VEC) +/* VECTOR SUBTRACT WITH BORROW INDICATION */ + F(0xe7bf, VSBI, VRR_d, V, 0, 0, 0, 0, vsbi, 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 b7052f73f8a5..66a938a90972 100644 --- a/target/s390x/translate_vx.inc.c +++ b/target/s390x/translate_vx.inc.c @@ -2192,3 +2192,29 @@ static DisasJumpType op_vscbi(DisasContext *s, DisasOps *o) get_field(s->fields, v3), &g[es]); return DISAS_NEXT; } + +static void gen_sbi2_i64(TCGv_i64 dl, TCGv_i64 dh, TCGv_i64 al, TCGv_i64 ah, + TCGv_i64 bl, TCGv_i64 bh, TCGv_i64 cl, TCGv_i64 ch) +{ + TCGv_i64 tl = tcg_temp_new_i64(); + TCGv_i64 zero = tcg_const_i64(0); + + tcg_gen_andi_i64(tl, cl, 1); + tcg_gen_sub2_i64(dl, dh, al, ah, bl, bh); + tcg_gen_sub2_i64(dl, dh, dl, dh, tl, zero); + tcg_temp_free_i64(tl); + tcg_temp_free_i64(zero); +} + +static DisasJumpType op_vsbi(DisasContext *s, DisasOps *o) +{ + if (get_field(s->fields, m5) != ES_128) { + gen_program_exception(s, PGM_SPECIFICATION); + return DISAS_NORETURN; + } + + gen_gvec128_4_i64(gen_sbi2_i64, get_field(s->fields, v1), + get_field(s->fields, v2), get_field(s->fields, v3), + get_field(s->fields, v4)); + return DISAS_NEXT; +}