New custom GDB command to output target info in JSON format

resources/gdbHelpMonitorInfo.txt

@@ -4,4 +4,6 @@ Supported Bloom commands:
   version               Outputs Bloom's version information.
   version machine       Outputs Bloom's version information in JSON format.
 
+  target-info machine   Outputs information on the connected target, in JSON format.
+
   reset                 Resets the target and holds it in a stopped state.

src/DebugServer/CMakeLists.txt

@@ -22,6 +22,7 @@ target_sources(
         ${CMAKE_CURRENT_SOURCE_DIR}/Gdb/CommandPackets/HelpMonitorInfo.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/Gdb/CommandPackets/BloomVersion.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/Gdb/CommandPackets/BloomVersionMachine.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/Gdb/CommandPackets/TargetInfoMachine.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/Gdb/ResponsePackets/SupportedFeaturesResponse.cpp
 
         # AVR GDB RSP Server

src/DebugServer/Gdb/CommandPackets/TargetInfoMachine.cpp

@@ -0,0 +1,70 @@
+#include "TargetInfoMachine.hpp"
+
+#include <QString>
+#include <QJsonDocument>
+#include <QJsonObject>
+#include <QJsonArray>
+
+#include "src/DebugServer/Gdb/ResponsePackets/ResponsePacket.hpp"
+
+#include "src/Application.hpp"
+#include "src/Logger/Logger.hpp"
+#include "src/Exceptions/Exception.hpp"
+
+namespace Bloom::DebugServer::Gdb::CommandPackets
+{
+    using TargetController::TargetControllerConsole;
+
+    using ResponsePackets::ResponsePacket;
+
+    using Exceptions::Exception;
+
+    TargetInfoMachine::TargetInfoMachine(Monitor&& monitorPacket)
+        : Monitor(std::move(monitorPacket))
+    {}
+
+    void TargetInfoMachine::handle(DebugSession& debugSession, TargetControllerConsole&) {
+        Logger::debug("Handling TargetInfoMachine packet");
+
+        debugSession.connection.writePacket(ResponsePacket(Packet::toHex(
+            QJsonDocument(
+                this->generateTargetInfo(debugSession.gdbTargetDescriptor.targetDescriptor)
+            ).toJson().toStdString()
+        )));
+    }
+
+    QJsonObject TargetInfoMachine::generateTargetInfo(const Targets::TargetDescriptor& targetDescriptor) const {
+        using Targets::TargetMemoryType;
+
+        static const auto memoryTypeNamesByType = std::map<TargetMemoryType, QString>({
+            {TargetMemoryType::FLASH, QString("Flash")},
+            {TargetMemoryType::RAM, QString("RAM")},
+            {TargetMemoryType::EEPROM, QString("EEPROM")},
+        });
+
+        auto memoryDescriptors = QJsonArray();
+
+        for (const auto& [memoryType, memoryDescriptor] : targetDescriptor.memoryDescriptorsByType) {
+            if (!memoryTypeNamesByType.contains(memoryType)) {
+                continue;
+            }
+
+            memoryDescriptors.push_back(QJsonObject({
+                {"name", memoryTypeNamesByType.at(memoryType)},
+                {"size", static_cast<qint64>(memoryDescriptor.size())},
+                {"addressRange", QJsonObject({
+                    {"startAddress", static_cast<qint64>(memoryDescriptor.addressRange.startAddress)},
+                    {"endAddress", static_cast<qint64>(memoryDescriptor.addressRange.endAddress)},
+                })}
+            }));
+        }
+
+        return QJsonObject({
+            {"target", QJsonObject({
+                {"name", QString::fromStdString(targetDescriptor.name)},
+                {"id", QString::fromStdString(targetDescriptor.id)},
+                {"memoryDescriptors", memoryDescriptors},
+            })},
+        });
+    }
+}

src/DebugServer/Gdb/CommandPackets/TargetInfoMachine.hpp

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <cstdint>
+#include <QJsonObject>
+
+#include "Monitor.hpp"
+
+#include "src/Targets/TargetDescriptor.hpp"
+
+namespace Bloom::DebugServer::Gdb::CommandPackets
+{
+    /**
+     * The TargetInfoMachine class implements a structure for the "monitor target-info machine" GDB command.
+     *
+     * We just output information on the connected target, in JSON format.
+     */
+    class TargetInfoMachine: public Monitor
+    {
+    public:
+        explicit TargetInfoMachine(Monitor&& monitorPacket);
+
+        void handle(
+            DebugSession& debugSession,
+            TargetController::TargetControllerConsole& targetControllerConsole
+        ) override;
+
+    private:
+        QJsonObject generateTargetInfo(const Targets::TargetDescriptor& targetDescriptor) const;
+    };
+}

src/DebugServer/Gdb/GdbRspDebugServer.cpp

@@ -29,6 +29,7 @@
 #include "CommandPackets/HelpMonitorInfo.hpp"
 #include "CommandPackets/BloomVersion.hpp"
 #include "CommandPackets/BloomVersionMachine.hpp"
+#include "CommandPackets/TargetInfoMachine.hpp"
 
 // Response packets
 #include "ResponsePackets/TargetStopped.hpp"
@@ -313,6 +314,10 @@ namespace Bloom::DebugServer::Gdb
                     return std::make_unique<CommandPackets::ResetTarget>(std::move(*(monitorCommand.get())));
                 }
 
+                if (monitorCommand->command == "target-info machine") {
+                    return std::make_unique<CommandPackets::TargetInfoMachine>(std::move(*(monitorCommand.get())));
+                }
+
                 return monitorCommand;
             }
         }