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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 2D3F1C64EC4 for ; Thu, 9 Mar 2023 20:19:36 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1paMgU-0007BL-Vv; Thu, 09 Mar 2023 15:16:19 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1paMgM-0006NY-C2 for qemu-devel@nongnu.org; Thu, 09 Mar 2023 15:16:10 -0500 Received: from mail-pl1-x62f.google.com ([2607:f8b0:4864:20::62f]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1paMgK-0002s2-LJ for qemu-devel@nongnu.org; Thu, 09 Mar 2023 15:16:10 -0500 Received: by mail-pl1-x62f.google.com with SMTP id a9so3211672plh.11 for ; Thu, 09 Mar 2023 12:16:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1678392966; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=XqkTjaGJM8DnE14G+6CyxH6VE5+2RWIp+jWXl8vO804=; b=FXbZtCukePVi1EMXlwW5cuzVyT7KfLOT80SqSeSf/kBf+w6zgEf1W/VTAdslOJsQMK yrYQEg49OGtHT6qBkQor6+McahtEof5KeU2a4x3um0i15UCNmOW5vMlFrE4beTO//NLR oYzF9NOSPBVEzUo0xMljGZcmMXJ/xZiIAKzlZylRA5l2w18ZHXbbVHQBd8GdOQwN0L29 dvQcitS3/xRRYmL0qy7j6Zq2N7jIEY5KxUjSarJtu9kJBMzsDdtznqXJ5m00diamfOBa encI4AJomFrl8QdIoiPKCSgSM8uKmH576wFVmcloKDc8DlTEY1O/CEeg+c8z+EUZdKjW p1nw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678392966; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=XqkTjaGJM8DnE14G+6CyxH6VE5+2RWIp+jWXl8vO804=; b=QwFtG9DxDM4fwGboucf5mFYqBoUgtm/bzUevYMkArmYp/5JQDYxb0BrQCWA4RF1p1X iA0gfki+zlTSsAfycyqu7uSc5rV9fCZq17eT/vhxeLQhDqEiDAcWf933dFT+VmmMVx6L lHyBybyaDCzffT0LZFfO3G5q5YrkLDKcn6KLK3O2LZmTLres33U1R7rQZT062bdkAumI Vj2eJ6XVejURPJNsq+YR5BMEO8IrB+t2TQfuuT0kWGHAZ1/natb98JepFT1n9b94HBKV MsJx2OpEhpcOYCzP2P1Ue4l9lJOcpXvVg1RSyQe2qMVh1bGZDxCcb7nOU1U/sBSoWyMd BKvw== X-Gm-Message-State: AO0yUKUVQ3vAXWjXsw3YJOjgh++I1w8q0ZP/lEtwABYhFFlxKhxXVx2P fPraHB0Uykw1MHDXeHOI4M5eWzYpuAbdxt6QFUs= X-Google-Smtp-Source: AK7set/CjWGEluCFCHYQ4p+99Nb4XUkkzFJdJJXINe7dTI4qpPBLssMB5ttK58Tm9A3vFdPhBQ2NHQ== X-Received: by 2002:a17:90a:1a53:b0:234:b4a7:2abd with SMTP id 19-20020a17090a1a5300b00234b4a72abdmr24525040pjl.12.1678392966504; Thu, 09 Mar 2023 12:16:06 -0800 (PST) Received: from stoup.. ([2602:ae:154a:9f01:bf7f:79a0:a976:bdaf]) by smtp.gmail.com with ESMTPSA id w4-20020a17090a1b8400b0023377b98c7csm304094pjc.38.2023.03.09.12.16.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Mar 2023 12:16:06 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: laurent@vivier.eu Subject: [PATCH v2 1/2] target/m68k: Reject immediate as destination in gen_ea_mode Date: Thu, 9 Mar 2023 12:16:03 -0800 Message-Id: <20230309201604.3885359-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230309201604.3885359-1-richard.henderson@linaro.org> References: <20230309201604.3885359-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::62f; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org In theory this should never happen, as all such instructions are illegal. This is checked in e.g. gen_lea_mode and gen_ea_mode_fp but not here. In case something higher up isn't checking modes properly, return NULL_QREG. This will result in an illegal instruction exception being raised. Signed-off-by: Richard Henderson --- target/m68k/translate.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/target/m68k/translate.c b/target/m68k/translate.c index 422f4652f1..e16c608ef8 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -894,6 +894,10 @@ static TCGv gen_ea_mode(CPUM68KState *env, DisasContext *s, int mode, int reg0, case 3: /* pc index+displacement. */ goto do_indirect; case 4: /* Immediate. */ + /* Should never be used for an output or RMW input. */ + if (what == EA_STORE || addrp) { + return NULL_QREG; + } /* Sign extend values for consistency. */ switch (opsize) { case OS_BYTE: -- 2.34.1