added ALU with first commands

CMakeLists.txt

@@ -13,4 +13,6 @@ add_executable(riscv_emulator
         src/Manager.h
         src/ProgramLoader.cpp
         src/ProgramLoader.h
+        src/components/Alu.cpp
+        src/components/Alu.h
 )

src/Manager.cpp

@@ -6,6 +6,8 @@
 
 #include <utility>
 
+#include "components/Alu.h"
+
 Manager::Manager(std::string path): m_path(std::move(path)) {
     m_programFile.open(path);
 }
@@ -24,6 +26,7 @@ int Manager::run() {
     ProgramLoader::getInstance()->indexFile(m_programFile);
     while (std::getline(m_programFile, line)) {
         auto lineVector = ProgramLoader::parseLine(line);
+        Alu::calculate(lineVector);
     }
     return 0;
 }

src/Manager.h

@@ -33,12 +33,19 @@ public:
     ~Manager();
 
     /**
+     * Gibt die Singleton Instanz des Managers zurück
      *
-     * @param program_path Der Pfad zur .txt Quelldatei des Programmes
-     * @return Manager Instanz
+     * @param program_path Der Pfad des Quellcodes
+     * @return Die Singleton Instance des Managers
      */
     static Manager *getInstance(const std::string &program_path);
 
+    /**
+     * Die Hauptmethode des Emulators.
+     * Startet die Ausführung des Quellcodes.
+     *
+     * @return Der Exitcode des Emulators
+     */
     int run();
 };
 

src/components/Alu.cpp

@@ -0,0 +1,58 @@
+//
+// Created by black on 07.07.25.
+//
+
+#include "Alu.h"
+
+#include <vector>
+
+#include "Register.h"
+
+void Alu::calculate(const std::vector<std::string> &commandVector) {
+    /// Extrahiere den eigentlichen RISC-V Befehl für die ALU
+    const std::string &command = commandVector.at(0);
+
+    /// Extrahiere die Argumente des Befehls
+    const auto arg1 = parseArgument(commandVector.at(0));
+    const auto arg2 = parseArgument(commandVector.at(1));
+    int arg3 = 0;
+    if (!commandVector.at(2).empty()) {
+        arg3 = parseArgument(commandVector.at(2));
+    }
+
+    if (command == "add") {
+        const auto register1 = Register::getInstance().getRegister(arg2);
+        const auto register2 = Register::getInstance().getRegister(arg3);
+        const auto result = register1 + register2;
+        Register::getInstance().setRegister(arg1, result);
+    } else if (command == "sub") {
+        const auto register1 = Register::getInstance().getRegister(arg2);
+        const auto register2 = Register::getInstance().getRegister(arg3);
+        const auto result = register1 - register2;
+        Register::getInstance().setRegister(arg1, result);
+    } else if (command == "and") {
+        const auto register1 = Register::getInstance().getRegister(arg2);
+        const auto register2 = Register::getInstance().getRegister(arg3);
+        const auto result = register1 & register2;
+        Register::getInstance().setRegister(arg1, result);
+    } else if (command == "or") {
+        const auto register1 = Register::getInstance().getRegister(arg2);
+        const auto register2 = Register::getInstance().getRegister(arg3);
+        const auto result = register1 | register2;
+        Register::getInstance().setRegister(arg1, result);
+    } else if (command == "xor") {
+        const auto register1 = Register::getInstance().getRegister(arg2);
+        const auto register2 = Register::getInstance().getRegister(arg3);
+        const auto result = register1 ^ register2;
+        Register::getInstance().setRegister(arg1, result);
+    }
+}
+
+int Alu::parseArgument(std::string argument) {
+    /// Falls das erste Argument ein Register ist, entferne das führende "x"
+    if (argument.at(0) == 'x') {
+        argument = argument.substr(1, argument.length() - 1);
+    }
+    /// Da das Argument noch als String vorliegt, muss es in ein int umgewandelt werden
+    return std::stoi(argument);
+}

src/components/Alu.h

@@ -0,0 +1,32 @@
+//
+// Created by black on 07.07.25.
+//
+
+#ifndef ALU_H
+#define ALU_H
+#include <string>
+#include <vector>
+
+
+class Alu {
+public:
+    /**
+     * Die Hauptmethode der ALU.
+     * Führt die eigentlichen Berechnungen aus.
+     *
+     * @param commandVector Die auszuführende Codezeile
+     */
+    static void calculate(const std::vector<std::string> &commandVector);
+
+    /**
+     * Wandelt das gegebene Befehlsargument in ein Integer um
+     * und entfernt dabei ein mögliches "x" vor Registern.
+     *
+     * @param argument Das Befehlsargument, welches geparst werden soll
+     * @return Das Befehlsargument als int
+     */
+    static int parseArgument(std::string argument);
+};
+
+
+#endif //ALU_H

src/components/Register.cpp

@@ -5,7 +5,11 @@
 #include "Register.h"
 
 
-Register& Register::getInstance() {
+Register::Register() {
+    m_registers = {0};
+}
+
+Register &Register::getInstance() {
     static Register instance;
     return instance;
 }

src/components/Register.h

@@ -11,28 +11,31 @@
 
 
 class Register {
-
 private:
-    Register() = default;
+    Register();
 
     /// Singleton instance
     static Register *m_instance;
     /// "Echter" Register Speicher
-    std::array<int, 32> m_registers;
+    std::array<int, 32> m_registers{};
 
 public:
     /// Singleton Logik
     Register(const Register &) = delete;
+
     Register(const Register &&) = delete;
-    Register& operator=(const Register &) = delete;
-    Register& operator=(const Register &&) = delete;
+
+    Register &operator=(const Register &) = delete;
+
+    Register &operator=(const Register &&) = delete;
+
     ~Register() = default;
 
     /**
      *
      * @return Register Instanz
      */
-    static Register& getInstance();
+    static Register &getInstance();
 
     /**
      * Speichert den angegebenen Wert im angegebenen Register
@@ -48,7 +51,6 @@ public:
      * @return Der Wert des Registers
      */
     int getRegister(int reg) const;
-
 };
 
 #endif //REGISTER_H