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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id c15-20020adfef4f000000b0021d6f03b524sm10251990wrp.48.2022.07.18.03.01.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Jul 2022 03:01:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=LADKvz6NGwtTpJM5NpBVGy0mPvkc4sq8YRH/zAnJtNo=; b=sD30wY8bZN83brGu8oFmRrq+oAKISV2fydR2wdGzyxa1cxOXfvchvA4ZPYnelyjDjm GdWhwfQ9aeZHeJN6LMp63KwczQ+VM/3CtTq250ctTlXdyG8QAWK0utmVtPa1kapOseTP A29QeF7s7XGsMciBHaD2hd4f+dOANOOOzjvcpj12OfH2pZ4bZT8+ErDnpbV+bk7WQcYQ Sb06qv5DZNO+v7A/Ouzf57q5kXMBYI8UlYicPgcgaN10stMyBEr1bnhWmquz5ugVVTIH PfqDN8E8getvQjhS42kRszl+HTqf3gL4p5y1jtiP4FDWl6kcvKXCvpTYNj0eNH91Xqky tKFw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=LADKvz6NGwtTpJM5NpBVGy0mPvkc4sq8YRH/zAnJtNo=; b=HsfBP5IQPL1UZ2+FM5q8Ssira5dzwb2/kv/lOV+L0fYpXQvzfl7w+04Ndh7waoHU7u ZLVsZtGyZxqSNmOB4LhJDl/T7j42ik3M5GrJh6AHxoCej8zmVzMGcFVYt3uQ6VkReHO6 g7y2kcy6dy95Mj9wMUW0o0RVP0udO+WIvrWs5KnF4Ej6MBONYw30jDM2cT9RXJATO1av YV9fAtABWKcF9HlBP/ClfuCzisaKSviGF3WKflohRjfhmquQTu6nzWe0mu6qno+8u0y0 ayvnLxtqqZAyiNTU6BdMU5dg3RBmpiaSsF8Oh4OwZPk5pAAXpd5kn8/s38QZshZ3uy9A xiZg== X-Gm-Message-State: AJIora/6qFV5AO0aOZhwGs7QAmJXAr7MrRqlMZmckGz3/zmOLVy7ZLVp m/FlbjzxVTASFb4AwuvfUrqsNw== X-Google-Smtp-Source: AGRyM1sHB/+U5G7AyGE2ARXDOsjdLNyY21U0yMAiMl4xOeDaS9i4g+eXgeuqFOQIj5H+bQ+KBoq/NA== X-Received: by 2002:a05:600c:3b07:b0:3a3:1433:10b5 with SMTP id m7-20020a05600c3b0700b003a3143310b5mr8683144wms.129.1658138506135; Mon, 18 Jul 2022 03:01:46 -0700 (PDT) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Cc: Richard Henderson Subject: [PATCH] target/arm: Add MO_128 entry to pred_esz_masks[] Date: Mon, 18 Jul 2022 11:01:44 +0100 Message-Id: <20220718100144.3248052-1-peter.maydell@linaro.org> X-Mailer: git-send-email 2.25.1 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::336; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x336.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, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1658138599606100001 Content-Type: text/plain; charset="utf-8" In commit 7390e0e9ab8475, we added support for SME loads and stores. Unlike SVE loads and stores, these include handling of 128-bit elements. The SME load/store functions call down into the existing sve_cont_ldst_elements() function, which uses the element size MO_* value as an index into the pred_esz_masks[] array. Because this code path now has to handle MO_128, we need to add an extra element to the array. This bug was spotted by Coverity because it meant we were reading off the end of the array. Resolves: Coverity CID 1490539, 1490541, 1490543, 1490544, 1490545, 1490546, 1490548, 1490549, 1490550, 1490551, 1490555, 1490557, 1490558, 1490560, 1490561, 1490563 Fixes: 7390e0e9ab8475 ("target/arm: Implement SME LD1, ST1") Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson --- target/arm/cpu.h | 2 +- target/arm/translate-sve.c | 5 +++-- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index 1e36a839ee4..3123488014d 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -3374,7 +3374,7 @@ static inline uint64_t *aa64_vfp_qreg(CPUARMState *en= v, unsigned regno) } =20 /* Shared between translate-sve.c and sve_helper.c. */ -extern const uint64_t pred_esz_masks[4]; +extern const uint64_t pred_esz_masks[5]; =20 /* Helper for the macros below, validating the argument type. */ static inline MemTxAttrs *typecheck_memtxattrs(MemTxAttrs *x) diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c index 41f8b12259e..621a2abb22f 100644 --- a/target/arm/translate-sve.c +++ b/target/arm/translate-sve.c @@ -529,9 +529,10 @@ static void do_predtest(DisasContext *s, int dofs, int= gofs, int words) } =20 /* For each element size, the bits within a predicate word that are active= . */ -const uint64_t pred_esz_masks[4] =3D { +const uint64_t pred_esz_masks[5] =3D { 0xffffffffffffffffull, 0x5555555555555555ull, - 0x1111111111111111ull, 0x0101010101010101ull + 0x1111111111111111ull, 0x0101010101010101ull, + 0x0001000100010001ull, }; =20 static bool trans_INVALID(DisasContext *s, arg_INVALID *a) --=20 2.25.1