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Iglesias" Subject: [PATCH v2 4/7] target/arm: Present AArch64 gdbstub based on ARM_FEATURE_AARCH64 Date: Tue, 29 Apr 2025 14:21:57 +0100 Message-ID: <20250429132200.605611-5-peter.maydell@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250429132200.605611-1-peter.maydell@linaro.org> References: <20250429132200.605611-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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::433; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x433.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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1745933042723019100 Currently we provide an AArch64 gdbstub for CPUs which are TYPE_AARCH64_CPU, and an AArch32 gdbstub for those which are only TYPE_ARM_CPU. This mostly does the right thing, except in the corner case of KVM with -cpu host,aarch64=3Doff. That produces a CPU which is TYPE_AARCH64_CPU but which has ARM_FEATURE_AARCH64 removed and which to the guest is in AArch32 mode. Now we have moved all the handling of AArch64-vs-AArch32 gdbstub behaviour into TYPE_ARM_CPU we can change the condition we use for whether to select the AArch64 gdbstub to look at ARM_FEATURE_AARCH64. This will mean that we now correctly provide an AArch32 gdbstub for aarch64=3Doff CPUs. Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Richard Henderson --- target/arm/internals.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/arm/internals.h b/target/arm/internals.h index 4d3d84ffebd..f1c06a3fd89 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -1831,7 +1831,7 @@ void aarch64_add_sme_properties(Object *obj); /* Return true if the gdbstub is presenting an AArch64 CPU */ static inline bool arm_gdbstub_is_aarch64(ARMCPU *cpu) { - return object_dynamic_cast(OBJECT(cpu), TYPE_AARCH64_CPU); + return arm_feature(&cpu->env, ARM_FEATURE_AARCH64); } =20 /* Read the CONTROL register as the MRS instruction would. */ --=20 2.43.0