From patchwork Sun Mar 14 13:55:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Bastian Koppelmann X-Patchwork-Id: 12137385 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=-16.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,URIBL_BLOCKED,USER_AGENT_GIT 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 77BF7C433DB for ; Sun, 14 Mar 2021 14:03:43 +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 E0B0164E49 for ; Sun, 14 Mar 2021 14:03:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E0B0164E49 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mail.uni-paderborn.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:35300 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lLRLJ-0002IE-TI for qemu-devel@archiver.kernel.org; Sun, 14 Mar 2021 10:03:41 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:44172) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lLRFA-0003PE-El for qemu-devel@nongnu.org; Sun, 14 Mar 2021 09:57:20 -0400 Received: from hoth.uni-paderborn.de ([2001:638:502:c003::19]:45862) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lLRF7-00038m-Km for qemu-devel@nongnu.org; Sun, 14 Mar 2021 09:57:20 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mail.uni-paderborn.de; s=20170601; h=Content-Transfer-Encoding:Content-Type :MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Sender:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=oUmowQ9d9iCIHAcueK7Re3aZKbvA5OZOA2lY3aK4+Bc=; b=UG9URUqb5paY+4RFgwKch01fqG nSncTbtuzHoUGKrLi86X6RcgL1Cz9BcEGCBn7FcQL4seo54OvuLaWoaqueMcVp4PNmNFcArMAk47q IMwwez6FwCqPRdGmWc8pIfvF5JF0YVhGFY/x7gxdENG+j22XSqPdZQ6SZKGo3wIRE808=; X-Envelope-From: From: Bastian Koppelmann To: qemu-devel@nongnu.org Subject: [PULL 7/7] target/tricore: Fix OPC2_32_RRPW_EXTR for width=0 Date: Sun, 14 Mar 2021 14:55:13 +0100 Message-Id: <20210314135513.1369871-8-kbastian@mail.uni-paderborn.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210314135513.1369871-1-kbastian@mail.uni-paderborn.de> References: <20210314135513.1369871-1-kbastian@mail.uni-paderborn.de> MIME-Version: 1.0 X-PMX-Version: 6.4.9.2830568, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2021.3.14.134815, AntiVirus-Engine: 5.80.0, AntiVirus-Data: 2021.2.8.5800000 X-Sophos-SenderHistory: ip=2a02:908:2214:e5bc::95d, fs=31367618, da=103339299, mc=575, sc=4, hc=571, sp=0, fso=31367618, re=0, sd=0, hd=0 X-IMT-Spam-Score: 0.0 () X-IMT-Authenticated-Sender: uid=kbastian,ou=People,o=upb,c=de Received-SPF: pass client-ip=2001:638:502:c003::19; envelope-from=kbastian@mail.uni-paderborn.de; helo=hoth.uni-paderborn.de X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, 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: kbastian@mail.uni-paderborn.de, Richard Henderson , =?utf-8?q?Philippe_Mathie?= =?utf-8?q?u-Daud=C3=A9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" if width was 0 we would run into the assertion: qemu-system-tricore: tcg/tcg-op.c:217: tcg_gen_sari_i32: Assertion `arg2 >= 0 && arg2 < 32' failed.o The instruction manual specifies undefined behaviour for this case. So we bring this in line with the golden Infineon simlator 'tsim', which simply writes 0 to the result in case of width=0. Reviewed-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Bastian Koppelmann --- target/tricore/translate.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/target/tricore/translate.c b/target/tricore/translate.c index 5b7ed70e39..2a814263de 100644 --- a/target/tricore/translate.c +++ b/target/tricore/translate.c @@ -7000,6 +7000,11 @@ static void decode_rrpw_extract_insert(DisasContext *ctx) switch (op2) { case OPC2_32_RRPW_EXTR: + if (width == 0) { + tcg_gen_movi_tl(cpu_gpr_d[r3], 0); + break; + } + if (pos + width <= 32) { /* optimize special cases */ if ((pos == 0) && (width == 8)) {