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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]:47604 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kMrjn-0000f9-2c for qemu-devel@archiver.kernel.org; Mon, 28 Sep 2020 07:54:35 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:38368) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kMrgF-00066B-9C for qemu-devel@nongnu.org; Mon, 28 Sep 2020 07:50:55 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:24675) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kMrgD-0008F9-5o for qemu-devel@nongnu.org; Mon, 28 Sep 2020 07:50:54 -0400 Dkim-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1601293852; 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:autocrypt:autocrypt; bh=ZYYRjkPwGDvrm82s+7h3JwDSu+/0Sok7+H9nMslg7AU=; b=OcfMYPsFkgcP2NhVxjj/0/7DiH8lG+xqJa8XSrLUzbJh92Xi9XSBMdl7rjxmxYUJjf9K9e /sZHD8SuxPPJutalklJE0BiTF3gxoN79yoPn0lM231KWJZLwD+WB0G/Rn9SnqaKUo2O4J7 zC3Wl3pGwhpYYLYhvqLdGodoyNXaoHk= 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-178-nmyLhB0gP7KmmJ1llaErXQ-1; Mon, 28 Sep 2020 07:50:50 -0400 X-MC-Unique: nmyLhB0gP7KmmJ1llaErXQ-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 920111040C20; Mon, 28 Sep 2020 11:50:49 +0000 (UTC) Received: from [10.36.115.97] (ovpn-115-97.ams2.redhat.com [10.36.115.97]) by smtp.corp.redhat.com (Postfix) with ESMTP id CB4B87B7A2; Mon, 28 Sep 2020 11:50:47 +0000 (UTC) Subject: Re: [PATCH v1 5/8] s390x/tcg: Implement BRANCH INDIRECT ON CONDITION (BIC) To: Richard Henderson , qemu-devel@nongnu.org References: <20200922103129.12824-1-david@redhat.com> <20200922103129.12824-6-david@redhat.com> <06b8deaa-75c3-b95c-398b-8dac0efc6718@linaro.org> From: David Hildenbrand Autocrypt: addr=david@redhat.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: <06b8deaa-75c3-b95c-398b-8dac0efc6718@linaro.org> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=david@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=63.128.21.124; envelope-from=david@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/28 03:47:08 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.687, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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 , Thomas Huth Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 25.09.20 23:45, Richard Henderson wrote: > On 9/22/20 3:31 AM, David Hildenbrand wrote: >> +/* BRANCH INDIRECT ON CONDITION */ >> + C(0xe347, BIC, RXY_b, MIE2,0, m2_64, 0, 0, bc, 0) >> /* BRANCH ON CONDITION */ >> C(0x0700, BCR, RR_b, Z, 0, r2_nz, 0, 0, bc, 0) >> C(0x4700, BC, RX_b, Z, 0, a2, 0, 0, bc, 0) >> diff --git a/target/s390x/translate.c b/target/s390x/translate.c >> index b536491892..383edf7419 100644 >> --- a/target/s390x/translate.c >> +++ b/target/s390x/translate.c >> @@ -1626,6 +1626,11 @@ static DisasJumpType op_bc(DisasContext *s, DisasOps *o) >> return DISAS_NEXT; >> } >> >> + /* For BIC the address came from memory, we need to wrap it again. */ >> + if (s->fields.op2 == 0x47) { >> + gen_addi_and_wrap_i64(s, o->in2, o->in2, 0); >> + } > > I'm not keen on this sort of per-opcode checks. > > I'd prefer to add an in2_m2_64w() helper that performs the load and then wraps. Makes sense, thanks! -- Thanks, David / dhildenb