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Processed in 1.9e-05 secs); 07 Nov 2023 13:03:54 -0000 From: Nicolas Eder To: qemu-devel@nongnu.org Cc: "Nicolas Eder" , =?UTF-8?q?Alex=20Benn=C3=A9e?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , "Christian Boenig" Subject: [PATCH v3 08/20] mcdstub: query packet processing added and core/system querie added Date: Tue, 7 Nov 2023 14:03:11 +0100 Message-Id: <20231107130323.4126-9-nicolas.eder@lauterbach.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231107130323.4126-1-nicolas.eder@lauterbach.com> References: <20231107130323.4126-1-nicolas.eder@lauterbach.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Qmail-Scanner-2.11: added fake Content-Type header 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=62.154.241.196; envelope-from=nicolas.eder@lauterbach.com; helo=smtp1.lauterbach.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_PASS=-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-ZM-MESSAGEID: 1699362566395100003 Content-Type: text/plain; charset="utf-8" --- include/mcdstub/mcdstub.h | 30 +++++++++++++++++ mcdstub/mcdstub.c | 70 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 100 insertions(+) diff --git a/include/mcdstub/mcdstub.h b/include/mcdstub/mcdstub.h index c3e9c7e9dc..c4370bb177 100644 --- a/include/mcdstub/mcdstub.h +++ b/include/mcdstub/mcdstub.h @@ -402,6 +402,18 @@ int process_string_cmd(void *user_ctx, const char *dat= a, * @params: GArray with all extracted parameters. */ int cmd_parse_params(const char *data, const char *schema, GArray *params); + +/** + * handle_gen_query() - Handler for all TCP query packets. + * + * Calls :c:func:`process_string_cmd` with all query functions in the + * mcd_query_cmds_table. :c:func:`process_string_cmd` then selects the cor= rect + * one. This function just passes on the TCP packet data string from the + * parameters. + * @params: GArray with all TCP packet parameters. + */ +void handle_gen_query(GArray *params, void *user_ctx); + /** * mcd_get_cpu_index() - Returns the internal CPU index plus one. * @@ -415,6 +427,24 @@ int mcd_get_cpu_index(CPUState *cpu); * @cpu_index: Index of the desired CPU. */ CPUState *mcd_get_cpu(uint32_t cpu_index); + +/** + * handle_query_cores() - Handler for the core query. + * + * This function sends the type of core and number of cores currently + * simulated by QEMU. It also sends a device name for the MCD data structu= re. + * @params: GArray with all TCP packet parameters. + */ +void handle_query_cores(GArray *params, void *user_ctx); + +/** + * handle_query_system() - Handler for the system query. + * + * Sends the system name, which is "qemu-system". + * @params: GArray with all TCP packet parameters. + */ +void handle_query_system(GArray *params, void *user_ctx); + /** * get_first_cpu_in_process() - Returns the first CPU in the provided proc= ess. * diff --git a/mcdstub/mcdstub.c b/mcdstub/mcdstub.c index 858e79632b..a090268e70 100644 --- a/mcdstub/mcdstub.c +++ b/mcdstub/mcdstub.c @@ -81,6 +81,20 @@ void init_query_cmds_table(MCDCmdParseEntry *mcd_query_c= mds_table) /* initalizes a list of all query commands */ int cmd_number =3D 0; =20 + MCDCmdParseEntry query_system =3D { + .handler =3D handle_query_system, + .cmd =3D QUERY_ARG_SYSTEM, + }; + mcd_query_cmds_table[cmd_number] =3D query_system; + cmd_number++; + + MCDCmdParseEntry query_cores =3D { + .handler =3D handle_query_cores, + .cmd =3D QUERY_ARG_CORES, + }; + mcd_query_cmds_table[cmd_number] =3D query_cores; + cmd_number++; + void reset_mcdserver_state(void) { g_free(mcdserver_state.processes); @@ -345,6 +359,17 @@ int mcd_handle_packet(const char *line_buf) error_report("QEMU: Terminated via MCDstub"); mcd_exit(0); exit(0); + case TCP_CHAR_QUERY: + { + static MCDCmdParseEntry query_cmd_desc =3D { + .handler =3D handle_gen_query, + }; + query_cmd_desc.cmd =3D (char[2]) { TCP_CHAR_QUERY, '\0' }; + strcpy(query_cmd_desc.schema, + (char[2]) { ARG_SCHEMA_STRING, '\0' }); + cmd_parser =3D &query_cmd_desc; + } + break; case TCP_CHAR_CLOSE_SERVER: { static MCDCmdParseEntry close_server_cmd_desc =3D { @@ -368,6 +393,20 @@ int mcd_handle_packet(const char *line_buf) =20 return RS_IDLE; } + +void handle_gen_query(GArray *params, void *user_ctx) +{ + if (!params->len) { + return; + } + /* iterate over all possible query functions and execute the right one= */ + if (process_string_cmd(NULL, get_param(params, 0)->data, + mcdserver_state.mcd_query_cmds_table, + ARRAY_SIZE(mcdserver_state.mcd_query_cmds_table= ))) { + mcd_put_packet(""); + } +} + void run_cmd_parser(const char *data, const MCDCmdParseEntry *cmd) { if (!data) { @@ -735,6 +774,37 @@ void handle_open_server(GArray *params, void *user_ctx) mcd_put_packet(TCP_HANDSHAKE_SUCCESS); } =20 +void handle_query_system(GArray *params, void *user_ctx) +{ + mcd_put_packet(MCD_SYSTEM_NAME); +} + +void handle_query_cores(GArray *params, void *user_ctx) +{ + /* get first cpu */ + CPUState *cpu =3D mcd_first_attached_cpu(); + if (!cpu) { + return; + } + + ObjectClass *oc =3D object_get_class(OBJECT(cpu)); + const char *cpu_model =3D object_class_get_name(oc); + + CPUClass *cc =3D CPU_GET_CLASS(cpu); + const gchar *arch =3D cc->gdb_arch_name(cpu); + + uint32_t nr_cores =3D cpu->nr_cores; + char device_name[ARGUMENT_STRING_LENGTH] =3D {0}; + if (arch) { + snprintf(device_name, sizeof(device_name), "%s", + DEVICE_NAME_TEMPLATE(arch)); + } + g_string_printf(mcdserver_state.str_buf, "%s=3D%s.%s=3D%s.%s=3D%u.", + TCP_ARGUMENT_DEVICE, device_name, TCP_ARGUMENT_CORE, cpu_model, + TCP_ARGUMENT_AMOUNT_CORE, nr_cores); + mcd_put_strbuf(); +} + =20 void handle_close_server(GArray *params, void *user_ctx) { --=20 2.34.1