Added getRegisterNumbers() member function to GDB target descriptor

src/DebugServers/GdbRsp/AvrGdb/TargetDescriptor.cpp

@@ -42,6 +42,10 @@ namespace Bloom::DebugServers::Gdb::AvrGdb
             + ") not mapped to any target register descriptor.");
     }
 
+    const std::vector<GdbRegisterNumberType>& TargetDescriptor::getRegisterNumbers() const {
+        return this->registerNumbers;
+    }
+
     void TargetDescriptor::loadRegisterMappings() {
         auto& registerDescriptorsByType = this->targetDescriptor.registerDescriptorsByType;
         if (!registerDescriptorsByType.contains(TargetRegisterType::STATUS_REGISTER)) {
@@ -62,6 +66,18 @@ namespace Bloom::DebugServers::Gdb::AvrGdb
             throw Exception("Unexpected general purpose register count");
         }
 
+        /*
+         * For AVR targets, avr-gdb defines 35 registers in total:
+         *
+         * Register number 0 through 31 are general purpose registers
+         * Register number 32 is the status register (SREG)
+         * Register number 33 is the stack pointer register
+         * Register number 34 is the program counter register
+         */
+
+        // Generate 35 register numbers (0 -> 34)
+        std::iota(this->registerNumbers.begin(), this->registerNumbers.end(), 0);
+
         /*
          * Worth noting that gpRegisterDescriptors will always be sorted in the correct order, from register 0 to 31.
          *

src/DebugServers/GdbRsp/AvrGdb/TargetDescriptor.hpp

@@ -43,6 +43,8 @@ namespace Bloom::DebugServers::Gdb::AvrGdb
             GdbRegisterNumberType number
         ) const override;
 
+        const std::vector<GdbRegisterNumberType>& getRegisterNumbers() const override;
+
     private:
         void loadRegisterMappings();
     };

src/DebugServers/GdbRsp/CommandPackets/ReadRegisters.cpp

@@ -40,8 +40,8 @@ namespace Bloom::DebugServers::Gdb::CommandPackets
 
             } else {
                 // Read all target registers mapped to a GDB register
-                for (const auto& descriptor : targetDescriptor.getRegisterNumberToDescriptorMapping().getMap()) {
-                    descriptors.insert(targetDescriptor.getTargetRegisterDescriptorFromNumber(descriptor.second.number));
+                for (const auto& registerNumber : targetDescriptor.getRegisterNumbers()) {
+                    descriptors.insert(targetDescriptor.getTargetRegisterDescriptorFromNumber(registerNumber));
                 }
             }
 

src/DebugServers/GdbRsp/TargetDescriptor.hpp

@@ -2,6 +2,7 @@
 
 #include <cstdint>
 #include <optional>
+#include <vector>
 
 #include "RegisterDescriptor.hpp"
 
@@ -46,5 +47,12 @@ namespace Bloom::DebugServers::Gdb
         virtual const Targets::TargetRegisterDescriptor& getTargetRegisterDescriptorFromNumber(
             GdbRegisterNumberType number
         ) const = 0;
+
+        /**
+         * Should return all allocated GDB register numbers for the target.
+         *
+         * @return
+         */
+        virtual const std::vector<GdbRegisterNumberType>& getRegisterNumbers() const = 0;
     };
 }