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([2602:ae:154a:9f01:b1e0:bfd9:8b1a:efeb]) by smtp.gmail.com with ESMTPSA id q1-20020a17090a1b0100b0022c0a05229fsm7757940pjq.41.2023.03.07.10.35.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Mar 2023 10:35:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1678214113; 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=gpKNIHDff/Si/rvKhy6WY0gB11IUIaDAfVrzJbPyus0=; b=MGkQlMoZw2UppWGiM0FBFEnrveliHV7/IPk65Fx6oinSz1HxQJ60yw/mELCsJzqV44 VWGqflqMQRBEx+m3B9zuU7XLcTEiKrqXUvnPQW//tHHPtkR6JFgojF8i58XRPharo5kl 85C4C0el6wNSwgC4Rc6o2bpFBpG++aKVmOvV/hNicfxLtf+1mmmOB3FCFrloSm875txE EmYox5rKfvYRY/8MAN8oJXeYag2ShoMx+vxwOFF4T2YiHaBOIMpcVl2uDGWlfrY6QPtV MSGeCZbj2Cy81Eck7bC/0Snt3IxR0lekb5UN50UnzvG9mCH0C4zc7VYUSjf/PT3Y979A vINQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678214113; 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=gpKNIHDff/Si/rvKhy6WY0gB11IUIaDAfVrzJbPyus0=; b=lgA/iRL+LucS+AYzPwbRgrQ/CoFsRwpoqkqLUG5XZvoGIvx2xlcxgpz6doISDPNYfv 0CDawm9fjbQNqV+twjbEdCwuzUtGbwcHLh3AfvUF1oOgIQW0n+ii+n2Y5hoNMaMEPBNF z3dlMB2ZVDGAm9IQ7qGvgr2LyirxZ1LV/OBgPNgzygtRkL1sJH/moMmwqafEMf3vNjnH OFMwTUGu934VDRStI1M8V3QRcHkm9Lq0rVK/PgGhXWr8aJnUA+0XvgQ8jspP86hXZ+Qe ve4Yr0C3DiQUGevGE2TKGf3Cc9rENweFhCJMysB8n1JjWMF3x3wuGWIZz72rYJbbxRm8 vD8A== X-Gm-Message-State: AO0yUKUDZHuHYJz199elJGFeJ6MwTU1Clc4cn71O2e1H9kHWCsNFpOvK FnvUY3Lpzyq15tbVOcjyJ1NqfdNQchwD/YbS3so= X-Google-Smtp-Source: AK7set+79lPXa7r/Dnw8sVJY1TzCw27oyIJIkrEOdnhNrTrCAlysFtALyZABVgXcKzyVw0eOq3dj/w== X-Received: by 2002:a17:90b:4b4b:b0:233:a6b7:3770 with SMTP id mi11-20020a17090b4b4b00b00233a6b73770mr16106109pjb.14.1678214113699; Tue, 07 Mar 2023 10:35:13 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Laurent Vivier Subject: [PATCH v2 12/25] target/m68k: Reject immediate as destination in gen_ea_mode Date: Tue, 7 Mar 2023 10:34:50 -0800 Message-Id: <20230307183503.2512684-13-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230307183503.2512684-1-richard.henderson@linaro.org> References: <20230307183503.2512684-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; 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+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1678214224624100003 Content-Type: text/plain; charset="utf-8" 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 --- Cc: Laurent Vivier --- target/m68k/translate.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/target/m68k/translate.c b/target/m68k/translate.c index 44c3ac0bc3..fc65dad190 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -894,6 +894,10 @@ static TCGv gen_ea_mode(CPUM68KState *env, DisasContex= t *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 =3D=3D EA_STORE || addrp) { + return NULL_QREG; + } /* Sign extend values for consistency. */ switch (opsize) { case OS_BYTE: --=20 2.34.1