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Fri, 15 Nov 2019 09:30:14 -0800 (PST) From: =?UTF-8?q?Alex=20Benn=C3=A9e?= To: qemu-devel@nongnu.org Subject: [RFC PATCH 09/11] target/arm: prepare for multiple dynamic XMLs Date: Fri, 15 Nov 2019 17:29:58 +0000 Message-Id: <20191115173000.21891-10-alex.bennee@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191115173000.21891-1-alex.bennee@linaro.org> References: <20191115173000.21891-1-alex.bennee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::441 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: , Cc: damien.hedde@greensocs.com, Peter Maydell , luis.machado@linaro.org, richard.henderson@linaro.org, "open list:ARM TCG CPUs" , alan.hayward@arm.com, =?UTF-8?q?Alex=20Benn=C3=A9e?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) We will want to generate similar dynamic XML for gdbstub support of SVE registers (the upstream doesn't use XML). To that end lightly rename a few things to make the distinction. Signed-off-by: Alex Benn=C3=A9e --- target/arm/cpu.h | 20 +++++++++++++------- target/arm/gdbstub.c | 30 +++++++++++++++--------------- target/arm/helper.c | 4 ++-- 3 files changed, 30 insertions(+), 24 deletions(-) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index 0f4541af1ee..97744496f2d 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -128,14 +128,20 @@ enum { /** * DynamicGDBXMLInfo: * @desc: Contains the XML descriptions. - * @num_cpregs: Number of the Coprocessor registers seen by GDB. - * @cpregs_keys: Array that contains the corresponding Key of - * a given cpreg with the same order of the cpreg in the XML description. + * @num: Number of the registers in this XML seen by GDB. + * @data: A union with data specific to the set of registers + * @cpregs_keys: Array that contains the corresponding Key of + * a given cpreg with the same order of the cpreg + * in the XML description. */ typedef struct DynamicGDBXMLInfo { char *desc; - int num_cpregs; - uint32_t *cpregs_keys; + int num; + union { + struct { + uint32_t *keys; + } cpregs; + } data; } DynamicGDBXMLInfo; =20 /* CPU state for each instance of a generic timer (in cp15 c14) */ @@ -751,7 +757,7 @@ struct ARMCPU { uint64_t *cpreg_vmstate_values; int32_t cpreg_vmstate_array_len; =20 - DynamicGDBXMLInfo dyn_xml; + DynamicGDBXMLInfo dyn_sysreg_xml; =20 /* Timers used by the generic (architected) timer */ QEMUTimer *gt_timer[NUM_GTIMERS]; @@ -958,7 +964,7 @@ int arm_cpu_gdb_write_register(CPUState *cpu, uint8_t *= buf, int reg); /* Dynamically generates for gdb stub an XML description of the sysregs fr= om * the cp_regs hashtable. Returns the registered sysregs number. */ -int arm_gen_dynamic_xml(CPUState *cpu); +int arm_gen_dynamic_sysreg_xml(CPUState *cpu); =20 /* Returns the dynamically generated XML for the gdb stub. * Returns a pointer to the XML contents for the specified XML file or NULL diff --git a/target/arm/gdbstub.c b/target/arm/gdbstub.c index 4557775d245..1f68ab98c3b 100644 --- a/target/arm/gdbstub.c +++ b/target/arm/gdbstub.c @@ -106,15 +106,15 @@ int arm_cpu_gdb_write_register(CPUState *cs, uint8_t = *mem_buf, int n) return 0; } =20 -static void arm_gen_one_xml_reg_tag(GString *s, DynamicGDBXMLInfo *dyn_xml, - ARMCPRegInfo *ri, uint32_t ri_key, - int bitsize) +static void arm_gen_one_xml_sysreg_tag(GString *s, DynamicGDBXMLInfo *dyn_= xml, + ARMCPRegInfo *ri, uint32_t ri_key, + int bitsize) { g_string_append_printf(s, "name); g_string_append_printf(s, " bitsize=3D\"%d\"", bitsize); g_string_append_printf(s, " group=3D\"cp_regs\"/>"); - dyn_xml->num_cpregs++; - dyn_xml->cpregs_keys[dyn_xml->num_cpregs - 1] =3D ri_key; + dyn_xml->data.cpregs.keys[dyn_xml->num] =3D ri_key; + dyn_xml->num++; } =20 static void arm_register_sysreg_for_xml(gpointer key, gpointer value, @@ -126,12 +126,12 @@ static void arm_register_sysreg_for_xml(gpointer key,= gpointer value, GString *s =3D param->s; ARMCPU *cpu =3D ARM_CPU(param->cs); CPUARMState *env =3D &cpu->env; - DynamicGDBXMLInfo *dyn_xml =3D &cpu->dyn_xml; + DynamicGDBXMLInfo *dyn_xml =3D &cpu->dyn_sysreg_xml; =20 if (!(ri->type & (ARM_CP_NO_RAW | ARM_CP_NO_GDB))) { if (arm_feature(env, ARM_FEATURE_AARCH64)) { if (ri->state =3D=3D ARM_CP_STATE_AA64) { - arm_gen_one_xml_reg_tag(s , dyn_xml, ri, ri_key, 64); + arm_gen_one_xml_sysreg_tag(s , dyn_xml, ri, ri_key, 64); } } else { if (ri->state =3D=3D ARM_CP_STATE_AA32) { @@ -140,30 +140,30 @@ static void arm_register_sysreg_for_xml(gpointer key,= gpointer value, return; } if (ri->type & ARM_CP_64BIT) { - arm_gen_one_xml_reg_tag(s , dyn_xml, ri, ri_key, 64); + arm_gen_one_xml_sysreg_tag(s , dyn_xml, ri, ri_key, 64= ); } else { - arm_gen_one_xml_reg_tag(s , dyn_xml, ri, ri_key, 32); + arm_gen_one_xml_sysreg_tag(s , dyn_xml, ri, ri_key, 32= ); } } } } } =20 -int arm_gen_dynamic_xml(CPUState *cs) +int arm_gen_dynamic_sysreg_xml(CPUState *cs) { ARMCPU *cpu =3D ARM_CPU(cs); GString *s =3D g_string_new(NULL); RegisterSysregXmlParam param =3D {cs, s}; =20 - cpu->dyn_xml.num_cpregs =3D 0; - cpu->dyn_xml.cpregs_keys =3D g_new(uint32_t, g_hash_table_size(cpu->cp= _regs)); + cpu->dyn_sysreg_xml.num =3D 0; + cpu->dyn_sysreg_xml.data.cpregs.keys =3D g_new(uint32_t, g_hash_table_= size(cpu->cp_regs)); g_string_printf(s, ""); g_string_append_printf(s, "= "); g_string_append_printf(s, ""); g_hash_table_foreach(cpu->cp_regs, arm_register_sysreg_for_xml, ¶m= ); g_string_append_printf(s, ""); - cpu->dyn_xml.desc =3D g_string_free(s, false); - return cpu->dyn_xml.num_cpregs; + cpu->dyn_sysreg_xml.desc =3D g_string_free(s, false); + return cpu->dyn_sysreg_xml.num; } =20 const char *arm_gdb_get_dynamic_xml(CPUState *cs, const char *xmlname) @@ -171,7 +171,7 @@ const char *arm_gdb_get_dynamic_xml(CPUState *cs, const= char *xmlname) ARMCPU *cpu =3D ARM_CPU(cs); =20 if (strcmp(xmlname, "system-registers.xml") =3D=3D 0) { - return cpu->dyn_xml.desc; + return cpu->dyn_sysreg_xml.desc; } return NULL; } diff --git a/target/arm/helper.c b/target/arm/helper.c index 2a2ac89951c..3234e6d08df 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -207,7 +207,7 @@ static int arm_gdb_get_sysreg(CPUARMState *env, GByteAr= ray *buf, int reg) const ARMCPRegInfo *ri; uint32_t key; =20 - key =3D cpu->dyn_xml.cpregs_keys[reg]; + key =3D cpu->dyn_sysreg_xml.data.cpregs.keys[reg]; ri =3D get_arm_cp_reginfo(cpu->cp_regs, key); if (ri) { if (cpreg_field_is_64bit(ri)) { @@ -6911,7 +6911,7 @@ void arm_cpu_register_gdb_regs_for_features(ARMCPU *c= pu) 19, "arm-vfp.xml", 0); } gdb_register_coprocessor(cs, arm_gdb_get_sysreg, arm_gdb_set_sysreg, - arm_gen_dynamic_xml(cs), + arm_gen_dynamic_sysreg_xml(cs), "system-registers.xml", 0); } =20 --=20 2.20.1