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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id p12-20020adfe60c000000b0032d886039easm9113752wrm.14.2023.11.06.03.34.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Nov 2023 03:34:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1699270486; x=1699875286; darn=nongnu.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=y64pfPV7NL7E0LJgFX4bNE9NqKWBU2sOyHjVdfLQkVI=; b=v5XVa6ctx66hL64ooEiHCXFKyO6ggC5kFvrpuE9szKKCMVKTW6ErD5i7C9Vx6E46Vm rkcW4YLmgm9Hj5WWqp2B28oqiTWgMwG54R5iHW6skqutBXGjLKMMoQB+4v6ps7GWFwWP sBId9mDfQtZVzdj0rDhOq5/RUm2Dp6nGw7q7t/o3UhmizhuoODcU4MoK8KzOei2Ho7ws Lh+J5jx7zrw6kyWhwX7c8Tgoiuqoz5YKiwG4WChrtchfohdLxSNLmu788fMTiYztg7nN Ypmkdy6jIubFC0aTrnwReg9XTFpKHvcCXn0vQFMsQcGjnv7u3iQC/Ix9ZAnq5SpisKJE cRtQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699270486; x=1699875286; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=y64pfPV7NL7E0LJgFX4bNE9NqKWBU2sOyHjVdfLQkVI=; b=Vt6GzBZrAQAZI8xoKv2cD6KZb0VDuDQHXtb7RzXZ1bXYrH3MatCTpN3d6EAfDKzH+I 3Gr6NQaM111bnyqga22x9anpRTjIfi8V2IK0rYj9WQs5Jz+0yVVotaYQ/88f+kbJmnu8 4vb0qgC05uvHx7lelHQSmJ08pawAA+9TB8etKtDD0KbIeyb3MFJi7rYw542WnAFMF2Qp EsjgAHqIxoeztXhdUmGO/oN6UxK0j9RmsjRCDK6vt6j63NsBwtJDoBy+X5r4QnfvjfVV Q8nkYw/8U6corcNkF5tvIHPc6IWNN1KcHqeKqSJbF4J9Z6cTTtZ48yC775FWZZLfJce4 PmRg== X-Gm-Message-State: AOJu0YxB/ZDdpyGJOi6MWc8t0HGLPUoxAVJhKTxDumBVIhwsaZfL54EJ 4oa1lBTaNe2viwXns5KDoPROEw== X-Google-Smtp-Source: AGHT+IFtyhOAfub7DYniKQT4IfKbgneMbIF4tVUmBbfOuNvnlzzDDLhjSNBnqCFVsmHudFEH8gtqEQ== X-Received: by 2002:adf:9c91:0:b0:32d:adda:e8ca with SMTP id d17-20020adf9c91000000b0032daddae8camr20493258wre.22.1699270486442; Mon, 06 Nov 2023 03:34:46 -0800 (PST) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org Subject: [PATCH] target/arm: Fix A64 LDRA immediate decode Date: Mon, 6 Nov 2023 11:34:45 +0000 Message-Id: <20231106113445.1163063-1-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 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::436; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x436.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=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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1699271186528100011 Content-Type: text/plain; charset="utf-8" In commit be23a049 in the conversion to decodetree we broke the decoding of the immediate value in the LDRA instruction. This should be a 10 bit signed value that is scaled by 8, but in the conversion we incorrectly ended up scaling it only by 2. Fix the scaling factor. Cc: qemu-stable@nongnu.org Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1970 Fixes: be23a049 ("target/arm: Convert load (pointer auth) insns to decodetr= ee") Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- target/arm/tcg/translate.h | 5 +++++ target/arm/tcg/a64.decode | 2 +- 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/target/arm/tcg/translate.h b/target/arm/tcg/translate.h index 9efe00cf6ca..3c3bb3431ad 100644 --- a/target/arm/tcg/translate.h +++ b/target/arm/tcg/translate.h @@ -205,6 +205,11 @@ static inline int times_4(DisasContext *s, int x) return x * 4; } =20 +static inline int times_8(DisasContext *s, int x) +{ + return x * 8; +} + static inline int times_2_plus_1(DisasContext *s, int x) { return x * 2 + 1; diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode index 0cf11470741..8a20dce3c8f 100644 --- a/target/arm/tcg/a64.decode +++ b/target/arm/tcg/a64.decode @@ -462,7 +462,7 @@ LDAPR sz:2 111 0 00 1 0 1 11111 1100 00 rn:5 = rt:5 # Load/store register (pointer authentication) =20 # LDRA immediate is 10 bits signed and scaled, but the bits aren't all con= tiguous -%ldra_imm 22:s1 12:9 !function=3Dtimes_2 +%ldra_imm 22:s1 12:9 !function=3Dtimes_8 =20 LDRA 11 111 0 00 m:1 . 1 ......... w:1 1 rn:5 rt:5 imm=3D%ldra_= imm =20 --=20 2.34.1