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[172.254.253.57]) by smtp.gmail.com with ESMTPSA id y9sm13701081qko.74.2021.11.02.11.25.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Nov 2021 11:25:23 -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:in-reply-to:references :mime-version:content-transfer-encoding; bh=4iN+wCNn39PyCmqyIu9fXyF1t2chc7mKLTiK8TWZaXs=; b=JoPCVBn9L1Ue22zkRBO/EyAKTn1xiZ8Z9+zAHemM/cg31+nW5NR+EEMoag89yIU4Vu 6cp4Ds2SdZ1FdONyDtr487fadvrTZel39kfy1pj7y3P6fCvwvzocpdeFy6vBE5fUjBlb 8PynOc2HDPFrq6lHMddP7xzxAPkVATYFqW+9uMxNdQN6331of0sppX6/e0doNLwhFM66 1E7sJpiwz/Rdpu0Y2fNQ74bCR1qPI4WHkyrxIDYHqW9lSJOIL5rXoS6aujVUijKJyUD5 RbPQ1Tu0PhpmuOPhgpZOpQo13R3tBsJah7qT8bB/hyJ/INCopvCBbQm5e30YUT0m+zsY tl+w== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=4iN+wCNn39PyCmqyIu9fXyF1t2chc7mKLTiK8TWZaXs=; b=n6p2Ut+kagCn2o0q34AHoUrsO9fUpRELv6V1SQeMkMzl27bu4NFic9CX030PENWExR lFJbn1dau/WM4meV4nabQSKKSB6bcdHRQaD5FJHBJ+0xhAsJ9qi1Eg2TQFxBShSkzJeF Z/d8NvPPnBzfZKJ4YPnbyZzGlo8mo11cMexNG56uztfFumg2mdUCi2BrHyI3p+vkjr8j UWwqKU8hY/fVWPXksBWGnCUultvEefFrBRqkLjaF6jhKxNDtVHh5ct3SnDMoBI9MxQS1 tJbFIx2F2N1kyOBhWoKWBQMjK8AAIWna9vCu8xNhT4wWodSLRp1pfYfFWF04EQc8ZdQ4 s38Q== X-Gm-Message-State: AOAM532sWQGdE1Yxyri3Rl5vLzrEUPfTolwNLJmfajkFh/tQslbJKWnX CfxKmwh33Sxz2B6mAG8u7fNzMjwbfhB/vg== X-Google-Smtp-Source: ABdhPJyQSklgrzZTg+CEORm4UgQSsos2Ez8PgYoPF8SZtOK3xjMPDLSPNWbOkKn8T/bw0v5OJ1xfCQ== X-Received: by 2002:a0c:edb0:: with SMTP id h16mr27487471qvr.17.1635877523902; Tue, 02 Nov 2021 11:25:23 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL v2 05/12] target/arm: Advertise MVE to gdb when present Date: Tue, 2 Nov 2021 14:25:12 -0400 Message-Id: <20211102182519.320319-6-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211102182519.320319-1-richard.henderson@linaro.org> References: <20211102182519.320319-1-richard.henderson@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=2607:f8b0:4864:20::f33; envelope-from=richard.henderson@linaro.org; helo=mail-qv1-xf33.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: , Cc: Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1635878166566100003 From: Peter Maydell Cortex-M CPUs with MVE should advertise this fact to gdb, using the org.gnu.gdb.arm.m-profile-mve XML feature, which defines the VPR register. Presence of this feature also tells gdb to create pseudo-registers Q0..Q7, so we do not need to tell gdb about them separately. Note that unless you have a very recent GDB that includes this fix: http://patches-tcwg.linaro.org/patch/58133/ gdb will mis-print the individual fields of the VPR register as zero (but showing the whole thing as hex, eg with "print /x $vpr" will give the correct value). Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 Message-Id: <20211101160814.5103-1-peter.maydell@linaro.org> Signed-off-by: Richard Henderson --- configs/targets/aarch64-softmmu.mak | 2 +- configs/targets/arm-linux-user.mak | 2 +- configs/targets/arm-softmmu.mak | 2 +- configs/targets/armeb-linux-user.mak | 2 +- target/arm/gdbstub.c | 25 +++++++++++++++++++++++++ gdb-xml/arm-m-profile-mve.xml | 19 +++++++++++++++++++ 6 files changed, 48 insertions(+), 4 deletions(-) create mode 100644 gdb-xml/arm-m-profile-mve.xml diff --git a/configs/targets/aarch64-softmmu.mak b/configs/targets/aarch64-= softmmu.mak index 13d40b55e6..d489e6da83 100644 --- a/configs/targets/aarch64-softmmu.mak +++ b/configs/targets/aarch64-softmmu.mak @@ -1,5 +1,5 @@ TARGET_ARCH=3Daarch64 TARGET_BASE_ARCH=3Darm TARGET_SUPPORTS_MTTCG=3Dy -TARGET_XML_FILES=3D gdb-xml/aarch64-core.xml gdb-xml/aarch64-fpu.xml gdb-x= ml/arm-core.xml gdb-xml/arm-vfp.xml gdb-xml/arm-vfp3.xml gdb-xml/arm-vfp-sy= sregs.xml gdb-xml/arm-neon.xml gdb-xml/arm-m-profile.xml +TARGET_XML_FILES=3D gdb-xml/aarch64-core.xml gdb-xml/aarch64-fpu.xml gdb-x= ml/arm-core.xml gdb-xml/arm-vfp.xml gdb-xml/arm-vfp3.xml gdb-xml/arm-vfp-sy= sregs.xml gdb-xml/arm-neon.xml gdb-xml/arm-m-profile.xml gdb-xml/arm-m-prof= ile-mve.xml TARGET_NEED_FDT=3Dy diff --git a/configs/targets/arm-linux-user.mak b/configs/targets/arm-linux= -user.mak index acecc339e3..3e10d6b15d 100644 --- a/configs/targets/arm-linux-user.mak +++ b/configs/targets/arm-linux-user.mak @@ -1,6 +1,6 @@ TARGET_ARCH=3Darm TARGET_SYSTBL_ABI=3Dcommon,oabi TARGET_SYSTBL=3Dsyscall.tbl -TARGET_XML_FILES=3D gdb-xml/arm-core.xml gdb-xml/arm-vfp.xml gdb-xml/arm-v= fp3.xml gdb-xml/arm-vfp-sysregs.xml gdb-xml/arm-neon.xml gdb-xml/arm-m-prof= ile.xml +TARGET_XML_FILES=3D gdb-xml/arm-core.xml gdb-xml/arm-vfp.xml gdb-xml/arm-v= fp3.xml gdb-xml/arm-vfp-sysregs.xml gdb-xml/arm-neon.xml gdb-xml/arm-m-prof= ile.xml gdb-xml/arm-m-profile-mve.xml TARGET_HAS_BFLT=3Dy CONFIG_ARM_COMPATIBLE_SEMIHOSTING=3Dy diff --git a/configs/targets/arm-softmmu.mak b/configs/targets/arm-softmmu.= mak index f6c95ba07a..92c8349b96 100644 --- a/configs/targets/arm-softmmu.mak +++ b/configs/targets/arm-softmmu.mak @@ -1,4 +1,4 @@ TARGET_ARCH=3Darm TARGET_SUPPORTS_MTTCG=3Dy -TARGET_XML_FILES=3D gdb-xml/arm-core.xml gdb-xml/arm-vfp.xml gdb-xml/arm-v= fp3.xml gdb-xml/arm-vfp-sysregs.xml gdb-xml/arm-neon.xml gdb-xml/arm-m-prof= ile.xml +TARGET_XML_FILES=3D gdb-xml/arm-core.xml gdb-xml/arm-vfp.xml gdb-xml/arm-v= fp3.xml gdb-xml/arm-vfp-sysregs.xml gdb-xml/arm-neon.xml gdb-xml/arm-m-prof= ile.xml gdb-xml/arm-m-profile-mve.xml TARGET_NEED_FDT=3Dy diff --git a/configs/targets/armeb-linux-user.mak b/configs/targets/armeb-l= inux-user.mak index 662c73d8fb..f81e5bf1fe 100644 --- a/configs/targets/armeb-linux-user.mak +++ b/configs/targets/armeb-linux-user.mak @@ -2,6 +2,6 @@ TARGET_ARCH=3Darm TARGET_SYSTBL_ABI=3Dcommon,oabi TARGET_SYSTBL=3Dsyscall.tbl TARGET_WORDS_BIGENDIAN=3Dy -TARGET_XML_FILES=3D gdb-xml/arm-core.xml gdb-xml/arm-vfp.xml gdb-xml/arm-v= fp3.xml gdb-xml/arm-vfp-sysregs.xml gdb-xml/arm-neon.xml gdb-xml/arm-m-prof= ile.xml +TARGET_XML_FILES=3D gdb-xml/arm-core.xml gdb-xml/arm-vfp.xml gdb-xml/arm-v= fp3.xml gdb-xml/arm-vfp-sysregs.xml gdb-xml/arm-neon.xml gdb-xml/arm-m-prof= ile.xml gdb-xml/arm-m-profile-mve.xml TARGET_HAS_BFLT=3Dy CONFIG_ARM_COMPATIBLE_SEMIHOSTING=3Dy diff --git a/target/arm/gdbstub.c b/target/arm/gdbstub.c index e0dcb33e32..134da0d0ae 100644 --- a/target/arm/gdbstub.c +++ b/target/arm/gdbstub.c @@ -199,6 +199,27 @@ static int vfp_gdb_set_sysreg(CPUARMState *env, uint8_= t *buf, int reg) return 0; } =20 +static int mve_gdb_get_reg(CPUARMState *env, GByteArray *buf, int reg) +{ + switch (reg) { + case 0: + return gdb_get_reg32(buf, env->v7m.vpr); + default: + return 0; + } +} + +static int mve_gdb_set_reg(CPUARMState *env, uint8_t *buf, int reg) +{ + switch (reg) { + case 0: + env->v7m.vpr =3D ldl_p(buf); + return 4; + default: + return 0; + } +} + /** * arm_get/set_gdb_*: get/set a gdb register * @env: the CPU state @@ -468,6 +489,10 @@ void arm_cpu_register_gdb_regs_for_features(ARMCPU *cp= u) 2, "arm-vfp-sysregs.xml", 0); } } + if (cpu_isar_feature(aa32_mve, cpu)) { + gdb_register_coprocessor(cs, mve_gdb_get_reg, mve_gdb_set_reg, + 1, "arm-m-profile-mve.xml", 0); + } gdb_register_coprocessor(cs, arm_gdb_get_sysreg, arm_gdb_set_sysreg, arm_gen_dynamic_sysreg_xml(cs, cs->gdb_num_re= gs), "system-registers.xml", 0); diff --git a/gdb-xml/arm-m-profile-mve.xml b/gdb-xml/arm-m-profile-mve.xml new file mode 100644 index 0000000000..cba664c4c5 --- /dev/null +++ b/gdb-xml/arm-m-profile-mve.xml @@ -0,0 +1,19 @@ + + + + + + + + + + + + + + + --=20 2.25.1