feat datapath added

datapath/alu.c

@@ -0,0 +1,7 @@
+#pragma once
+
+#include "core.h"
+
+/* we need basic arithmetic operations like add, sub, mult, div 
+ * and logical operations
+*/

datapath/ctrl.c

@@ -0,0 +1,3 @@
+#pragma once
+
+#include "core.h"

datapath/decode.c

@@ -0,0 +1,7 @@
+#pragma once
+
+#include "core.h"
+
+/* instruction decoder */
+
+/* hazard detection */

datapath/fetch.c

@@ -0,0 +1,3 @@
+#pragma once
+
+#include "core.h"

datapath/mem.c

@@ -0,0 +1,3 @@
+ #pragma once
+
+#include "core.h"

datapath/regfile.c

@@ -0,0 +1 @@
+/* MIPS32 Register File */

main.c

@@ -0,0 +1,42 @@
+#pragma once
+
+#include <stdio.h>
+#include "core.h"
+
+/*
+ * Component Init
+ **/
+void init_simulator(MIPS32Simulator * sim)
+{
+    /* Memory Init */
+    for (int i = 0; i < MEM_SIZE; i++) 
+        sim->memory[i] = 0;
+
+    /* GP Register Init */     
+    for (int i = 0; i < GP_REG_SIZE; i++) 
+        sim->gp_registers[i] = 0;
+
+    sim->pc = 0;  /* PC Init */
+}
+
+void run_simulator(MIPS32Simulator * sim)
+{
+    while(TRUE)
+    {
+        int inst = sim -> memory[sim -> pc / 4]; /* Current Instruction */
+        sim -> pc += 4; /* Next Instruction */
+
+        int opcode = (inst >> 26) & 0x3F;
+        int rs = (inst >> 21) & 0x1F;
+        int rt = (inst >> 16) & 0x1F;
+        int rd = (inst >> 11) & 0x1F;
+        int imm = inst & 0xFFFF;
+    }
+}
+
+int main()
+{
+    MIPS32Simulator sim;
+
+    init_simulator(&sim);
+}