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[81.2.115.148]) by smtp.gmail.com with ESMTPSA id g3sm28013170wrb.59.2020.08.03.04.18.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Aug 2020 04:18:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=BExTigTa/EjWPG8Q5yXKlYgwozNoOz78Qwl9+pJrCfg=; b=WBoyAtyOTh/OT8aDzwHkqSda7j0uFDgeCKhjxgTtlEpeZbxvLUsbLS4ctTHI5gwWTo NGuaQuFy5gowm1C0EtkhExKsGL2Hi0eAzkuJSMmr9coYxFZVxi5Kuk3HS3YUCUZtslBu zQZG/3G3myQeIsQygzVq/ShQNIIwBLBwF65Qwqk60lGGOEYkxXS8TTn0LJChDvdD/vSE /rr7N9a6L+maAxcG0qhvy49eVoGcKpS2pbNAI/mBpCOmQ1LzZ3q2uu5bdbdSB3v8icgl i2VnmzgUOtLK6Slh8beJSr7JRgIlHnnt6MKJNvwmXen1ujv6c29hdL/Z0/JRDCBSfz6d nRrQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=BExTigTa/EjWPG8Q5yXKlYgwozNoOz78Qwl9+pJrCfg=; b=Kjb9TUgOJV69AH8UtjX9qNi4UFEmm8jtxjenWe8j0gkVAmRmLzUpat2MhEZyRaQhuM tWmhzS2fgDvhHKXBc2P1yP6lDZwotIMWdik+x/0hgGugf/AUeZAy35pVPFN2yAJzCKa+ YLNRnwyuYQTFOFSXo7TPVfWwJrrtba/Qn/E5HXdoVKsa5v/ULJnF6LrDCVkAINjfPuVF j4YMI/SrYSGZAYqb9UI+YGSuoKdKAZ2X/5gmVfWo5IxdcwjUuJnU9WGZYOrL7vhxf8Wt wa/Mk4DeiZgi1AjAuNqFjz3j92AHmGZi5e7uWwuYFX47NwfliSnLaa7AFFktZyfFjAOv p5JQ== X-Gm-Message-State: AOAM530Ncl1RRBXYfuNKMi07zGoW2CM09E3beDdqWBRcLmE9kyxcsoJ1 C5f8kL9xN1y47hnBPq9pnRMrZg== X-Google-Smtp-Source: ABdhPJwdzKRJrT6EXHah4M3p7pqZcuPOohzaHAlMoNEJmmbypDU7/OXg4O9NorJw/HU5WYnEwMaz5g== X-Received: by 2002:a1c:720e:: with SMTP id n14mr4470024wmc.152.1596453538475; Mon, 03 Aug 2020 04:18:58 -0700 (PDT) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Subject: [PATCH 4/7] target/arm: Tidy up disas_arm_insn() Date: Mon, 3 Aug 2020 12:18:46 +0100 Message-Id: <20200803111849.13368-5-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200803111849.13368-1-peter.maydell@linaro.org> References: <20200803111849.13368-1-peter.maydell@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+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::341; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x341.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" The only thing left in the "legacy decoder" is the handling of disas_xscale_insn(), and we can simplify the code. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson --- target/arm/translate.c | 26 +++++++++----------------- 1 file changed, 9 insertions(+), 17 deletions(-) diff --git a/target/arm/translate.c b/target/arm/translate.c index b1be4cb9d60..639fe121a2e 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -8342,26 +8342,18 @@ static void disas_arm_insn(DisasContext *s, unsigne= d int insn) return; } /* fall back to legacy decoder */ - - switch ((insn >> 24) & 0xf) { - case 0xc: - case 0xd: - case 0xe: - { - /* First check for coprocessor space used for XScale/iwMMXt insns = */ - int cpnum =3D (insn >> 8) & 0xf; - - if (arm_dc_feature(s, ARM_FEATURE_XSCALE) && (cpnum < 2)) { + /* TODO: convert xscale/iwmmxt decoder to decodetree ?? */ + if (arm_dc_feature(s, ARM_FEATURE_XSCALE)) { + if (((insn & 0x0c000e00) =3D=3D 0x0c000000) + && ((insn & 0x03000000) !=3D 0x03000000)) { + /* Coprocessor insn, coprocessor 0 or 1 */ disas_xscale_insn(s, insn); - break; + return; } - /* fall through */ - } - default: - illegal_op: - unallocated_encoding(s); - break; } + +illegal_op: + unallocated_encoding(s); } =20 static bool thumb_insn_is_16bit(DisasContext *s, uint32_t pc, uint32_t ins= n) --=20 2.20.1