From patchwork Mon Oct 21 08:57:12 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 11201573 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 578BA13BD for ; Mon, 21 Oct 2019 08:59:00 +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 2E2EA206C2 for ; Mon, 21 Oct 2019 08:59:00 +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="J/6mbrv9" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2E2EA206C2 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:36066 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iMTWk-0003OM-NO for patchwork-qemu-devel@patchwork.kernel.org; Mon, 21 Oct 2019 04:58:58 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59338) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iMTVR-0001Kh-AS for qemu-devel@nongnu.org; Mon, 21 Oct 2019 04:57:38 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iMTVQ-0008HX-6L for qemu-devel@nongnu.org; Mon, 21 Oct 2019 04:57:37 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:29856 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 1iMTVQ-0008G1-0R for qemu-devel@nongnu.org; Mon, 21 Oct 2019 04:57:36 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1571648252; 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=FHlWXoHCnrB0OHhFNh6r59f33Iy5i10scQU1TwDX6JM=; b=J/6mbrv9CoNsAzUsLpqzyUhhHKirRK0M2XtfsNK3pItJYq50gGUGddY5y4I6bybrtnVgcG p6WzOKUoHQtFvEjxG9iUsoUZLyIi5rJy/+yXm7KDNgM7drrah2BqAEZaaNCpt6bz+MjBr+ UKAt0Gi5rpR2081wZUr9p3aKS/EgDfI= 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-295-xmXgOX7PO56xVTk7WEeFPw-1; Mon, 21 Oct 2019 04:57:28 -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 mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4BF4E1005516; Mon, 21 Oct 2019 08:57:27 +0000 (UTC) Received: from t460s.redhat.com (ovpn-116-198.ams2.redhat.com [10.36.116.198]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1B3A15D6B0; Mon, 21 Oct 2019 08:57:23 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Subject: [PATCH v2 3/6] s390x/tcg: Fix VECTOR SHIFT RIGHT ARITHMETIC BY BYTE Date: Mon, 21 Oct 2019 10:57:12 +0200 Message-Id: <20191021085715.3797-4-david@redhat.com> In-Reply-To: <20191021085715.3797-1-david@redhat.com> References: <20191021085715.3797-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-MC-Unique: xmXgOX7PO56xVTk7WEeFPw-1 X-Mimecast-Spam-Score: 0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 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: Thomas Huth , David Hildenbrand , Ivan Warren , Cornelia Huck , Richard Henderson , qemu-s390x@nongnu.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" We forgot to propagate the highest bit accross the high doubleword in two cases (shift >=64). Fixes: 5f724887e3dd ("s390x/tcg: Implement VECTOR SHIFT RIGHT ARITHMETIC") Reviewed-by: Richard Henderson Signed-off-by: David Hildenbrand --- target/s390x/vec_int_helper.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/target/s390x/vec_int_helper.c b/target/s390x/vec_int_helper.c index 1b3aaecbdb..d38405848f 100644 --- a/target/s390x/vec_int_helper.c +++ b/target/s390x/vec_int_helper.c @@ -70,15 +70,17 @@ static void s390_vec_sar(S390Vector *d, const S390Vector *a, uint64_t count) d->doubleword[0] = a->doubleword[0]; d->doubleword[1] = a->doubleword[1]; } else if (count == 64) { + tmp = (int64_t)a->doubleword[0] >> 63; d->doubleword[1] = a->doubleword[0]; - d->doubleword[0] = 0; + d->doubleword[0] = tmp; } else if (count < 64) { tmp = a->doubleword[1] >> count; d->doubleword[1] = deposit64(tmp, 64 - count, count, a->doubleword[0]); d->doubleword[0] = (int64_t)a->doubleword[0] >> count; } else { + tmp = (int64_t)a->doubleword[0] >> 63; d->doubleword[1] = (int64_t)a->doubleword[0] >> (count - 64); - d->doubleword[0] = 0; + d->doubleword[0] = tmp; } }