Add parse.c

parse.c

+/***************************************************************/
+/*                                                             */
+/*   MIPS-32 Instruction Level Simulator                       */
+/*                                                             */
+/*   SCE212 Ajou University                                    */
+/*   parse.c                                                   */
+/*   Adapted from CS311@KAIST                                  */
+/*                                                             */
+/***************************************************************/
+
+#include <stdio.h>
+
+#include "util.h"
+#include "parse.h"
+
+int text_size;
+int data_size;
+
+instruction parsing_instr(const char *buffer, const int index)
+{
+    instruction instr;
+	/** Implement this function */
+    char str1[7]={0,};
+    char str2[6]={0,};
+    char str3[17]={0,};
+    char str4[27]={0,};
+    char str5[33]={0,};
+    int a;
+    int b;
+    for(int i=0;i<32;i++)
+    {
+        str5[i]=buffer[i];
+    }
+    b=fromBinary(str5);
+    mem_write_32(MEM_TEXT_START+index,b);
+    for(int i=0;i<6;i++)
+    {
+        str1[i]=str5[i];
+    }
+    a=fromBinary(str1);
+    switch(a)
+    {
+        case 9:
+        case 12:
+        case 15:
+        case 13:
+        case 11:
+        case 35:
+        case 43:
+        case 4:
+        case 5:
+            instr.opcode = a;
+            for(int i=6;i<11;i++)
+            {
+                str2[i-6]=str5[i];
+            }
+            instr.r_t.r_i.rs = fromBinary(str2);
+            for(int i=11;i<16;i++)
+            {
+                str2[i-11]=str5[i];
+            }
+            instr.r_t.r_i.rt = fromBinary(str2);
+            for(int i=16;i<32;i++)
+            {
+                str3[i-16]=str5[i];
+            }
+            instr.r_t.r_i.r_i.imm = fromBinary(str3);
+            instr.value = 1;
+            break;
+        
+        case 0:
+            instr.opcode = a;
+            for(int i=6;i<11;i++)
+            {
+                str2[i-6]=str5[i];
+            }
+            instr.r_t.r_i.rs = fromBinary(str2);
+            for(int i=11;i<16;i++)
+            {
+                str2[i-11]=str5[i];
+            }
+            instr.r_t.r_i.rt = fromBinary(str2);
+            for(int i=16;i<21;i++)
+            {
+                str2[i-16]=str5[i];
+            }
+            instr.r_t.r_i.r_i.r.rd = fromBinary(str2);
+            for(int i=21;i<26;i++)
+            {
+                str2[i-21]=str5[i];
+            }
+            instr.r_t.r_i.r_i.r.shamt = fromBinary(str2);
+            for(int i=26;i<32;i++)
+            {
+                str1[i-26]=str5[i];
+            }
+            instr.func_code = fromBinary(str1);
+            instr.value = 1;
+            break;
+
+        case 2:
+        case 3:
+            instr.opcode = a;
+            for(int i=6;i<32;i++)
+            {
+                str4[i-6]=str5[i];
+            }
+            instr.r_t.target = fromBinary(str4);
+            instr.value = 1;
+            break;
+            
+            
+    }
+    return instr;
+}
+
+void parsing_data(const char *buffer, const int index)
+{
+	/** Implement this function */
+    char str[32]={0,};
+    for(int i=0;i<32;i++)
+    {
+        str[i]=buffer[i];
+    }
+    int fb = fromBinary(str);
+    mem_write_32(MEM_DATA_START+index,fb);
+}
+
+void print_parse_result()
+{
+    int i;
+    printf("Instruction Information\n");
+
+    for(i = 0; i < text_size/4; i++)
+    {
+        printf("INST_INFO[%d].value : %x\n",i, INST_INFO[i].value);
+        printf("INST_INFO[%d].opcode : %d\n",i, INST_INFO[i].opcode);
+
+	    switch(INST_INFO[i].opcode)
+        {
+            //Type I
+            case 0x9:		//(0x001001)ADDIU
+            case 0xc:		//(0x001100)ANDI
+            case 0xf:		//(0x001111)LUI	
+            case 0xd:		//(0x001101)ORI
+            case 0xb:		//(0x001011)SLTIU
+            case 0x23:		//(0x100011)LW
+            case 0x2b:		//(0x101011)SW
+            case 0x4:		//(0x000100)BEQ
+            case 0x5:		//(0x000101)BNE
+                printf("INST_INFO[%d].rs : %d\n",i, INST_INFO[i].r_t.r_i.rs);
+                printf("INST_INFO[%d].rt : %d\n",i, INST_INFO[i].r_t.r_i.rt);
+                printf("INST_INFO[%d].imm : %d\n",i, INST_INFO[i].r_t.r_i.r_i.imm);
+                break;
+
+            //TYPE R
+            case 0x0:		//(0x000000)ADDU, AND, NOR, OR, SLTU, SLL, SRL, SUBU  if JR
+                printf("INST_INFO[%d].func_code : %d\n",i, INST_INFO[i].func_code);
+                printf("INST_INFO[%d].rs : %d\n",i, INST_INFO[i].r_t.r_i.rs);
+                printf("INST_INFO[%d].rt : %d\n",i, INST_INFO[i].r_t.r_i.rt);
+                printf("INST_INFO[%d].rd : %d\n",i, INST_INFO[i].r_t.r_i.r_i.r.rd);
+                printf("INST_INFO[%d].shamt : %d\n",i, INST_INFO[i].r_t.r_i.r_i.r.shamt);
+                break;
+
+            //TYPE J
+            case 0x2:		//(0x000010)J
+            case 0x3:		//(0x000011)JAL
+                printf("INST_INFO[%d].target : %d\n",i, INST_INFO[i].r_t.target);
+                break;
+
+            default:
+                printf("Not available instruction\n");
+                assert(0);
+        }
+    }
+
+    printf("Memory Dump - Text Segment\n");
+    for(i = 0; i < text_size; i+=4)
+        printf("text_seg[%d] : %x\n", i, mem_read_32(MEM_TEXT_START + i));
+    for(i = 0; i < data_size; i+=4)
+        printf("data_seg[%d] : %x\n", i, mem_read_32(MEM_DATA_START + i));
+    printf("Current PC: %x\n", CURRENT_STATE.PC);
+}