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Tue, 24 Oct 2023 22:28:00 -0700 (PDT) Received: from localhost ([157.82.204.207]) by smtp.gmail.com with UTF8SMTPSA id h21-20020a170902eed500b001c78446d65fsm8297402plb.113.2023.10.24.22.27.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 24 Oct 2023 22:28:00 -0700 (PDT) From: Akihiko Odaki To: Cc: =?utf-8?q?Alex_Benn=C3=A9e?= , Mikhail Tyutin , Aleksandr Anenkov , qemu-devel@nongnu.org, =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Akihiko Odaki , Richard Henderson Subject: [PATCH v15 03/19] gdbstub: Introduce GDBFeatureBuilder Date: Wed, 25 Oct 2023 14:27:25 +0900 Message-ID: <20231025052744.20697-4-akihiko.odaki@daynix.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231025052744.20697-1-akihiko.odaki@daynix.com> References: <20231025052744.20697-1-akihiko.odaki@daynix.com> MIME-Version: 1.0 Received-SPF: none client-ip=2607:f8b0:4864:20::433; envelope-from=akihiko.odaki@daynix.com; helo=mail-pf1-x433.google.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org GDBFeatureBuilder unifies the logic to generate dynamic GDBFeature. Signed-off-by: Akihiko Odaki Reviewed-by: Richard Henderson --- include/exec/gdbstub.h | 50 ++++++++++++++++++++++++++++++++ gdbstub/gdbstub.c | 65 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 115 insertions(+) diff --git a/include/exec/gdbstub.h b/include/exec/gdbstub.h index 7fe00506c7..d8a3c56fa2 100644 --- a/include/exec/gdbstub.h +++ b/include/exec/gdbstub.h @@ -16,6 +16,12 @@ typedef struct GDBFeature { int num_regs; } GDBFeature; +typedef struct GDBFeatureBuilder { + GDBFeature *feature; + GPtrArray *xml; + int base_reg; +} GDBFeatureBuilder; + /* Get or set a register. Returns the size of the register. */ typedef int (*gdb_get_reg_cb)(CPUArchState *env, GByteArray *buf, int reg); @@ -44,6 +50,50 @@ void gdb_register_coprocessor(CPUState *cpu, */ int gdbserver_start(const char *port_or_device); +/** + * gdb_feature_builder_init() - Initialize GDBFeatureBuilder. + * @builder: The builder to be initialized. + * @feature: The feature to be filled. + * @name: The name of the feature. + * @xmlname: The name of the XML. + * @base_reg: The base number of the register ID. + */ +void gdb_feature_builder_init(GDBFeatureBuilder *builder, GDBFeature *feature, + const char *name, const char *xmlname, + int base_reg); + +/** + * gdb_feature_builder_append_tag() - Append a tag. + * @builder: The builder. + * @format: The format of the tag. + * @...: The values to be formatted. + */ +void G_GNUC_PRINTF(2, 3) +gdb_feature_builder_append_tag(const GDBFeatureBuilder *builder, + const char *format, ...); + +/** + * gdb_feature_builder_append_reg() - Append a register. + * @builder: The builder. + * @name: The register's name; it must be unique within a CPU. + * @bitsize: The register's size, in bits. + * @regnum: The offset of the register's number in the feature. + * @type: The type of the register. + * @group: The register group to which this register belongs; it can be NULL. + */ +void gdb_feature_builder_append_reg(const GDBFeatureBuilder *builder, + const char *name, + int bitsize, + int regnum, + const char *type, + const char *group); + +/** + * gdb_feature_builder_end() - End building GDBFeature. + * @builder: The builder. + */ +void gdb_feature_builder_end(const GDBFeatureBuilder *builder); + /** * gdb_find_static_feature() - Find a static feature. * @xmlname: The name of the XML. diff --git a/gdbstub/gdbstub.c b/gdbstub/gdbstub.c index ae24c4848f..ebb912da1b 100644 --- a/gdbstub/gdbstub.c +++ b/gdbstub/gdbstub.c @@ -422,6 +422,71 @@ static const char *get_feature_xml(const char *p, const char **newp, return NULL; } +void gdb_feature_builder_init(GDBFeatureBuilder *builder, GDBFeature *feature, + const char *name, const char *xmlname, + int base_reg) +{ + char *header = g_markup_printf_escaped( + "" + "" + "", + name); + + builder->feature = feature; + builder->xml = g_ptr_array_new(); + g_ptr_array_add(builder->xml, header); + builder->base_reg = base_reg; + feature->xmlname = xmlname; + feature->num_regs = 0; +} + +void gdb_feature_builder_append_tag(const GDBFeatureBuilder *builder, + const char *format, ...) +{ + va_list ap; + va_start(ap, format); + g_ptr_array_add(builder->xml, g_markup_vprintf_escaped(format, ap)); + va_end(ap); +} + +void gdb_feature_builder_append_reg(const GDBFeatureBuilder *builder, + const char *name, + int bitsize, + int regnum, + const char *type, + const char *group) +{ + if (builder->feature->num_regs < regnum) { + builder->feature->num_regs = regnum; + } + + if (group) { + gdb_feature_builder_append_tag( + builder, + "", + name, bitsize, builder->base_reg + regnum, type, group); + } else { + gdb_feature_builder_append_tag( + builder, + "", + name, bitsize, builder->base_reg + regnum, type); + } +} + +void gdb_feature_builder_end(const GDBFeatureBuilder *builder) +{ + g_ptr_array_add(builder->xml, (void *)""); + g_ptr_array_add(builder->xml, NULL); + + builder->feature->xml = g_strjoinv(NULL, (void *)builder->xml->pdata); + + for (guint i = 0; i < builder->xml->len - 2; i++) { + g_free(g_ptr_array_index(builder->xml, i)); + } + + g_ptr_array_free(builder->xml, TRUE); +} + const GDBFeature *gdb_find_static_feature(const char *xmlname) { const GDBFeature *feature;