refactor: core file split

core.c

@@ -0,0 +1,47 @@
+#include "core.h"
+
+void init(MIPS32Simulator * sim)
+{
+    /* Memory initialization */
+    memset(sim->im, 0, sizeof(sim->im)/sizeof(int));
+
+    /* Register file initialization */     
+    memset(sim->reg_file, 0, sizeof(sim->reg_file)/sizeof(int));
+
+    /* ID/EX control signal initialization */
+    sim->id_ex_ctrl.ALUSrc=OFF, sim->id_ex_ctrl.ALUOp=OFF, sim->id_ex_ctrl.RegDst=OFF;
+    sim->id_ex_ctrl.MemRead=OFF, sim->id_ex_ctrl.MemWrite=OFF, sim->id_ex_ctrl.Branch=OFF, 
+    sim->id_ex_ctrl.Jump=OFF, sim->id_ex_ctrl.RegWrite=OFF, sim->id_ex_ctrl.MemtoReg=OFF;
+
+    /* EX/MEM control signal initialization */
+    sim->ex_mem_ctrl.MemRead,sim->ex_mem_ctrl.MemWrite=OFF, sim->ex_mem_ctrl.Branch=OFF, 
+    sim->ex_mem_ctrl.Jump=OFF, sim->ex_mem_ctrl.RegWrite=OFF, sim->ex_mem_ctrl.MemtoReg=OFF;
+
+    /* MEM/WB control signal initialization */
+    sim->mem_wb_ctrl.RegWrite=OFF, sim->mem_wb_ctrl.MemtoReg=OFF;
+
+    /* IF/ID pipeline register initialization */
+    sim->if_id_reg.instruction=0, sim->if_id_reg.pc=0;
+
+    /* ID/EX pipeline register initialization */
+    sim->id_ex_reg.pc=0, sim->id_ex_reg.rs_val=0, sim->id_ex_reg.rt_val=0,
+    sim->id_ex_reg.rt_num=0, sim->id_ex_reg.rd_num=0, sim->id_ex_reg.imm_val=0;
+
+    /* EX/MEM pipeline register initialization */
+    sim->ex_mem_reg.br_tgt=0, sim->ex_mem_reg.zero=0, sim->ex_mem_reg.ALU_result=0,
+    sim->ex_mem_reg.rt_val=0, sim->ex_mem_reg.rd_num=0;
+
+    /* MEM/WB  pipeline register initialization */
+    sim->mem_wb_reg.ALU_result=0, sim->mem_wb_reg.load_data=0,
+    sim->mem_wb_reg.rd_num=0;
+
+    /* Forwarding control signal initialization */
+    sim->fwd_ctrl.FwdA = 0x00, sim->fwd_ctrl.FwdB = 0x00;
+
+    /* Hazard control signal initialization */
+    sim->hzrd_ctrl.if_flush = ON, sim->hzrd_ctrl.if_id_write = ON,
+    sim->hzrd_ctrl.pc_write = ON;
+
+    /* PC Init */
+    sim->pc = 0; 
+}

core.h

@@ -49,3 +49,5 @@ typedef struct {
 	int MEM_hist_itr;
 	int WB_hist_itr;
 } MIPS32Simulator;
+
+void init(MIPS32Simulator * sim);