From nobody Mon Feb 9 19:52:09 2026 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=1567757003; cv=none; d=zoho.com; s=zohoarc; b=AuKLzFTd/+dk2bj8iOBbq/wWMavPN7fgsHvA9v/9WstLg8gd++aUQwlCHrK1x9HQvPZzq9/vPSGaj1pUQL452Zndzja3ElRfbKKq+tJODEVa1NjDKn/ISZsldNoCZJLSC9OSGWZ8Ua1/1xBvLYDbnnMpalGcEyUgl55PGfqQC90= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1567757003; 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=yvjTIkTw/vplcNd260w9IidNiTMifu3VC4KqvEUxUyQ=; b=oQsuMCgGBxJCUE3gINJRbzYD1C1KLsW9xeNFzgxOK++GTmsDhTs1Gv3KztbBLU2e0qBeZQy44VrjnCwmzMuDFIFujwsIsNaVVaXAFNzKQeXeTmlm+6ej/FFGXcq90L7VBEBO7yWX3bUKGcDlASrvq6zlAhu7LFIj7ksfpmUXv4c= 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 1567757003310415.749903075647; Fri, 6 Sep 2019 01:03:23 -0700 (PDT) Received: from localhost ([::1]:53208 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i69DF-0000Dp-M2 for importer@patchew.org; Fri, 06 Sep 2019 04:03:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:41913) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i6987-0003LJ-2g for qemu-devel@nongnu.org; Fri, 06 Sep 2019 03:58:04 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1i6986-0002dN-0R for qemu-devel@nongnu.org; Fri, 06 Sep 2019 03:58:02 -0400 Received: from mx1.redhat.com ([209.132.183.28]:51824) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1i6985-0002cl-QI; Fri, 06 Sep 2019 03:58:01 -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 A714C3086246; Fri, 6 Sep 2019 07:58:00 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-162.ams2.redhat.com [10.36.117.162]) by smtp.corp.redhat.com (Postfix) with ESMTP id 059C81001955; Fri, 6 Sep 2019 07:57:58 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Date: Fri, 6 Sep 2019 09:57:24 +0200 Message-Id: <20190906075750.14791-3-david@redhat.com> In-Reply-To: <20190906075750.14791-1-david@redhat.com> References: <20190906075750.14791-1-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 [10.5.110.49]); Fri, 06 Sep 2019 07:58:01 +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 02/28] s390x/tcg: MVCL: Zero out unused bits of address 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: Florian Weimer , Thomas Huth , David Hildenbrand , Cornelia Huck , Stefano Brivio , qemu-s390x@nongnu.org, Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" We have to zero out unused bits in 24 and 31-bit addressing mode. Provide a new helper. Signed-off-by: David Hildenbrand Reviewed-by: Richard Henderson --- target/s390x/mem_helper.c | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c index 39ee9b3175..3152bdafe2 100644 --- a/target/s390x/mem_helper.c +++ b/target/s390x/mem_helper.c @@ -469,6 +469,26 @@ static inline uint64_t get_address(CPUS390XState *env,= int reg) return wrap_address(env, env->regs[reg]); } =20 +/* + * Store the address to the given register, zeroing out unused leftmost + * bits in bit positions 32-63 (24-bit and 31-bit mode only). + */ +static inline void set_address_zero(CPUS390XState *env, int reg, + uint64_t address) +{ + if (env->psw.mask & PSW_MASK_64) { + env->regs[reg] =3D address; + } else { + if (!(env->psw.mask & PSW_MASK_32)) { + address &=3D 0x00ffffff; + env->regs[reg] =3D deposit64(env->regs[reg], 0, 32, address); + } else { + address &=3D 0x7fffffff; + env->regs[reg] =3D deposit64(env->regs[reg], 0, 32, address); + } + } +} + static inline void set_address(CPUS390XState *env, int reg, uint64_t addre= ss) { if (env->psw.mask & PSW_MASK_64) { @@ -772,8 +792,8 @@ uint32_t HELPER(mvcl)(CPUS390XState *env, uint32_t r1, = uint32_t r2) =20 env->regs[r1 + 1] =3D deposit64(env->regs[r1 + 1], 0, 24, destlen); env->regs[r2 + 1] =3D deposit64(env->regs[r2 + 1], 0, 24, srclen); - set_address(env, r1, dest); - set_address(env, r2, src); + set_address_zero(env, r1, dest); + set_address_zero(env, r2, src); =20 return cc; } --=20 2.21.0