From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 37953CA9EA0 for ; Tue, 22 Oct 2019 10:09:00 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EB4D820700 for ; Tue, 22 Oct 2019 10:08:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="D9Qd+Yc9" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EB4D820700 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:52744 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iMr63-00043U-6K for qemu-devel@archiver.kernel.org; Tue, 22 Oct 2019 06:08:59 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59457) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iMqsb-00061i-Fj for qemu-devel@nongnu.org; Tue, 22 Oct 2019 05:55:06 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iMqsa-0005nO-Bb for qemu-devel@nongnu.org; Tue, 22 Oct 2019 05:55:05 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:46605 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iMqsa-0005nA-7G for qemu-devel@nongnu.org; Tue, 22 Oct 2019 05:55:04 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1571738103; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=g7u+a8Xu34xzLa3Yrc9NKxMdoyG0YtRPO1KZeRJQ6V4=; b=D9Qd+Yc9GyeoBO/hmUjO5R0k2WrlOnFKjKXTajzoyTQqILN0DJ0Z4Yu1jxf45Yj1HIKdkl 64ibfeiXctL6lykK5Ii+TWt+lalwBFkAuinghsxx3mQDN/22pzB6S0uJYQTSwk1lllj3oh WfQWHUHRaD5tm6z/RFj3WsjtiAmFU9U= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-74-HPKKE783MSKNM3S5qU9zWQ-1; Tue, 22 Oct 2019 05:55:01 -0400 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 81D2E80183E; Tue, 22 Oct 2019 09:55:00 +0000 (UTC) Received: from localhost (dhcp-192-218.str.redhat.com [10.33.192.218]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 2F46119C4F; Tue, 22 Oct 2019 09:55:00 +0000 (UTC) From: Cornelia Huck To: Peter Maydell Subject: [PULL 8/9] s390x/tcg: Fix VECTOR SUBTRACT WITH BORROW COMPUTE BORROW INDICATION Date: Tue, 22 Oct 2019 11:54:27 +0200 Message-Id: <20191022095428.20780-9-cohuck@redhat.com> In-Reply-To: <20191022095428.20780-1-cohuck@redhat.com> References: <20191022095428.20780-1-cohuck@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-MC-Unique: HPKKE783MSKNM3S5qU9zWQ-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-s390x@nongnu.org, Cornelia Huck , Richard Henderson , qemu-devel@nongnu.org, David Hildenbrand Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: David Hildenbrand The numbers are unsigned, the computation is wrong. "Each operand is treated as an unsigned binary integer". Let's implement as given in the PoP: "A subtraction is performed by adding the contents of the second operand with the bitwise complement of the third operand along with a borrow indication from the rightmost bit of the fourth operand." Reuse gen_accc2_i64(). Fixes: bc725e65152c ("s390x/tcg: Implement VECTOR SUBTRACT WITH BORROW COMP= UTE BORROW INDICATION") Signed-off-by: David Hildenbrand Message-Id: <20191021085715.3797-7-david@redhat.com> Reviewed-by: Richard Henderson Signed-off-by: Cornelia Huck --- target/s390x/translate_vx.inc.c | 13 +++---------- 1 file changed, 3 insertions(+), 10 deletions(-) diff --git a/target/s390x/translate_vx.inc.c b/target/s390x/translate_vx.in= c.c index fd746ba35fb6..71059f9ca0a0 100644 --- a/target/s390x/translate_vx.inc.c +++ b/target/s390x/translate_vx.inc.c @@ -2214,20 +2214,13 @@ static void gen_sbcbi2_i64(TCGv_i64 dl, TCGv_i64 dh= , TCGv_i64 al, TCGv_i64 ah, { TCGv_i64 th =3D tcg_temp_new_i64(); TCGv_i64 tl =3D tcg_temp_new_i64(); - TCGv_i64 zero =3D tcg_const_i64(0); =20 - tcg_gen_andi_i64(tl, cl, 1); - tcg_gen_sub2_i64(tl, th, al, zero, tl, zero); - tcg_gen_sub2_i64(tl, th, tl, th, bl, zero); - tcg_gen_andi_i64(th, th, 1); - tcg_gen_sub2_i64(tl, th, ah, zero, th, zero); - tcg_gen_sub2_i64(tl, th, tl, th, bh, zero); - tcg_gen_andi_i64(dl, th, 1); - tcg_gen_mov_i64(dh, zero); + tcg_gen_not_i64(tl, bl); + tcg_gen_not_i64(th, bh); + gen_accc2_i64(dl, dh, al, ah, tl, th, cl, ch); =20 tcg_temp_free_i64(tl); tcg_temp_free_i64(th); - tcg_temp_free_i64(zero); } =20 static DisasJumpType op_vsbcbi(DisasContext *s, DisasOps *o) --=20 2.21.0