diff --git a/run.c b/run.c
new file mode 100644
index 0000000000000000000000000000000000000000..ce0e9e954eb61871a727956b34c6d4149e01c72b
--- /dev/null
+++ b/run.c
@@ -0,0 +1,199 @@
+/***************************************************************/
+/* */
+/* MIPS-32 Instruction Level Simulator */
+/* */
+/* SCE212 Ajou University */
+/* run.c */
+/* Adapted from CS311@KAIST */
+/* */
+/***************************************************************/
+
+#include <stdio.h>
+
+#include "util.h"
+#include "run.h"
+
+/***************************************************************/
+/* */
+/* Procedure: get_inst_info */
+/* */
+/* Purpose: Read insturction information */
+/* */
+/***************************************************************/
+instruction* get_inst_info(uint32_t pc)
+{
+ return &INST_INFO[(pc - MEM_TEXT_START) >> 2];
+}
+
+/***************************************************************/
+/* */
+/* Procedure: process_instruction */
+/* */
+/* Purpose: Process one instrction */
+/* */
+/***************************************************************/
+void process_instruction()
+{
+ /** Implement this function */
+ if(INST_INFO[INSTRUCTION_COUNT].value!=1)
+ {
+ RUN_BIT = 0;
+ return;
+ }
+ switch(INST_INFO[INSTRUCTION_COUNT].opcode)
+ {
+ case 0:
+ if(INST_INFO[INSTRUCTION_COUNT].func_code==33)
+ {
+ CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.r.rd]
+ = CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rs] + CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rt];
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4+4;
+ break;
+ }
+ if(INST_INFO[INSTRUCTION_COUNT].func_code==36)
+ {
+ CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.r.rd]
+ = CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rs] & CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rt];
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4+4;
+ break;
+ }
+ if(INST_INFO[INSTRUCTION_COUNT].func_code==39)
+ {
+ CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.r.rd]
+ = ~(CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rs] | CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rt]);
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4+4;
+ break;
+ }
+ if(INST_INFO[INSTRUCTION_COUNT].func_code==37)
+ {
+ CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.r.rd]
+ = (CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rs] | CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rt]);
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4+4;
+ break;
+ }
+ if(INST_INFO[INSTRUCTION_COUNT].func_code==43)
+ {
+ if(CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rs]<CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rt])
+ {
+ CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.r.rd]=1;
+ }
+ else
+ {
+ CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.r.rd]=0;
+ }
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4+4;
+ break;
+ }
+ if(INST_INFO[INSTRUCTION_COUNT].func_code==0)
+ {
+ CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.r.rd]
+ = CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rt] << INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.r.shamt;
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4+4;
+ break;
+ }
+ if(INST_INFO[INSTRUCTION_COUNT].func_code==2)
+ {
+ CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.r.rd]
+ = CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rt] >> INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.r.shamt;
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4+4;
+ break;
+ }
+ if(INST_INFO[INSTRUCTION_COUNT].func_code==35)
+ {
+ CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.r.rd]
+ = CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rs] - CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rt];
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4+4;
+ break;
+ }
+ if(INST_INFO[INSTRUCTION_COUNT].func_code==8) //need change
+ {
+ INSTRUCTION_COUNT
+ = (CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rs]-MEM_TEXT_START-4)/4;
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4+4;
+ break;
+ }
+
+ case 9:
+ CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rt]
+ = CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rs] + INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.imm;
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4+4;
+ break;
+
+ case 12:
+ CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rt]
+ = CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rs] & INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.imm;
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4+4;
+ break;
+
+ case 15:
+ CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rt]
+ = INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.imm<<16;
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4+4;
+ break;
+
+ case 13:
+ CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rt]
+ = CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rs] | INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.imm;
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4+4;
+ break;
+
+ case 11:
+ if(CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rs]<INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.imm)
+ {
+ CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rt]=1;
+ }
+ else
+ {
+ CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rt]=0;
+ }
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4+4;
+ break;
+
+ case 35:
+ CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rt]
+ = mem_read_32(CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rs]+INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.imm);
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4+4;
+ break;
+
+ case 43:
+ mem_write_32(CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rs]
+ +INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.imm,CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rt]);
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4+4;
+ break;
+
+ case 4:
+ if(CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rs]==CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rt])
+ {
+ INSTRUCTION_COUNT = INSTRUCTION_COUNT + INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.imm;
+ CURRENT_STATE.PC = CURRENT_STATE.PC + INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.imm*4;
+ }
+ else
+ {
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4+4;
+ }
+ break;
+
+ case 5:
+ if(CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rs]!=CURRENT_STATE.REGS[INST_INFO[INSTRUCTION_COUNT].r_t.r_i.rt])
+ {
+ INSTRUCTION_COUNT = INSTRUCTION_COUNT + INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.imm;
+ CURRENT_STATE.PC = CURRENT_STATE.PC + INST_INFO[INSTRUCTION_COUNT].r_t.r_i.r_i.imm*4;
+ }
+ else
+ {
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4+4;
+ }
+ break;
+
+ case 2:
+ CURRENT_STATE.PC = INST_INFO[INSTRUCTION_COUNT].r_t.target + 4;
+ INSTRUCTION_COUNT = (INST_INFO[INSTRUCTION_COUNT].r_t.target*4 - MEM_TEXT_START)/4;
+ break;
+
+ case 3:
+ CURRENT_STATE.REGS[31] = (MEM_TEXT_START + INSTRUCTION_COUNT*4+8);
+ CURRENT_STATE.PC = MEM_TEXT_START + INSTRUCTION_COUNT*4;
+ INSTRUCTION_COUNT = (INST_INFO[INSTRUCTION_COUNT].r_t.target*4 - MEM_TEXT_START)/4-1;
+ break;
+ }
+}