1 files changed, 48 insertions, 0 deletions
diff --git a/qtmips_machine/instruction.h b/qtmips_machine/instruction.h
new file mode 100644
index 0000000..6ab7015
--- /dev/null
+++ b/qtmips_machine/instruction.h
@@ -0,0 +1,48 @@
+#ifndef INSTRUCTION_H
+#define INSTRUCTION_H
+
+#include <vector>
+#include <string>
+#include "registers.h"
+#include "memory.h"
+
+class Instruction {
+public:
+    // TODO return types should be according to what instruction can pass from this stage
+    //virtual void decode(Registers *regs) = 0; // Read and prepare instructions
+    //virtual void execute() = 0; // ALU operations
+    //virtual void memory(Memory *mem) = 0; // Read or write to memory
+    //virtual void write_back(Registers *regs) = 0; // Write results to registers
+
+    virtual std::vector<std::string> to_strs() = 0; // Returns all fields of instructions in string
+};
+
+class InstructionR : public Instruction {
+public:
+    InstructionR(std::uint8_t rs, std::uint8_t rd, std::uint8_t rt, std::uint8_t sa);
+
+    std::vector<std::string> to_strs();
+protected:
+    std::uint8_t rs, rd, rt, sa;
+};
+
+class InstructionI : public Instruction {
+public:
+    InstructionI(std::uint8_t rs, std::uint8_t rt, std::uint16_t immediate);
+
+    std::vector<std::string> to_strs();
+protected:
+    std::uint8_t rs, rt;
+    std::uint16_t immediage;
+};
+
+class InstructionJ : public Instruction {
+public:
+    InstructionJ(std::uint32_t address);
+
+    std::vector<std::string> to_strs();
+protected:
+    std::uint32_t address;
+};
+
+#endif // INSTRUCTION_H