From 7685850a3490118e77ed040cbbbf1eaff026ac9c Mon Sep 17 00:00:00 2001
From: lang0909 <lang0909@ajou.ac.kr>
Date: Fri, 30 Aug 2019 17:40:05 +0900
Subject: [PATCH] Add sce212sim.c
---
sce212sim.c | 186 ++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 186 insertions(+)
create mode 100644 sce212sim.c
diff --git a/sce212sim.c b/sce212sim.c
new file mode 100644
index 0000000..fbc33b6
--- /dev/null
+++ b/sce212sim.c
@@ -0,0 +1,186 @@
+/***************************************************************/
+/* */
+/* MIPS-32 Instruction Level Simulator */
+/* */
+/* SCE212 Ajou University */
+/* sce212.c */
+/* Adapted from CS311@KAIST */
+/* */
+/***************************************************************/
+
+/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
+/* DO NOT MODIFY THIS FILE! */
+/* You should only the parse.c and run.c files! */
+/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+
+#include "util.h"
+#include "parse.h"
+#include "run.h"
+
+/**************************************************************/
+/* */
+/* Procedure : load_program */
+/* */
+/* Purpose : Load program and service routines into mem. */
+/* */
+/**************************************************************/
+void load_program(char *program_filename) {
+ FILE *prog;
+ int ii, word;
+ char buffer[33];
+ //to notifying data & text segment size
+ int flag = 0;
+ int text_index = 0;
+ int data_index = 0;
+
+ /* Open program file. */
+ prog = fopen(program_filename, "r");
+
+ if (prog == NULL) {
+ printf("Error: Can't open program file %s\n", program_filename);
+ exit(-1);
+ }
+
+ /* Read in the program. */
+ ii = 0;
+
+ //read 32bits + '\0' = 33
+ while (fgets(buffer,33,prog) != NULL) {
+
+ if (flag == 0) {
+
+ //check text segment size
+ text_size = fromBinary(buffer);
+ NUM_INST = text_size/4;
+ //initial memory allocation of text segment
+ INST_INFO = malloc(sizeof(instruction)*(text_size/4));
+ init_inst_info(text_size/4);
+
+ } else if (flag == 1) {
+
+ //check data segment size
+ data_size = fromBinary(buffer);
+ //initial memory allocation of data segment
+ //if you would like to add data, you can re-allocate memory.
+ /* data_seg = malloc(sizeof(uint32_t)*(data_size/4)); */
+
+ } else {
+
+ if(ii < text_size) {
+ INST_INFO[text_index++] = parsing_instr(buffer, ii);
+ } else if(ii < text_size + data_size) {
+ parsing_data(buffer, ii-text_size);
+ } else {
+ //Do not enter this case
+ //assert(0);
+ //However, there is a newline in the input file
+ }
+ ii += 4;
+ }
+ flag++;
+ }
+
+ CURRENT_STATE.PC = MEM_TEXT_START;
+ //printf("Read %d words from program into memory.\n\n", ii/4);
+}
+
+/************************************************************/
+/* */
+/* Procedure : initialize */
+/* */
+/* Purpose : Load machine language program */
+/* and set up initial state of the machine. */
+/* */
+/************************************************************/
+void initialize(char *program_filename) {
+ int i;
+
+ init_memory();
+ load_program(program_filename);
+ RUN_BIT = TRUE;
+}
+
+/***************************************************************/
+/* */
+/* Procedure : main */
+/* */
+/***************************************************************/
+int main(int argc, char *argv[]) {
+ char** tokens;
+ int count = 1;
+ int addr1 = 0;
+ int addr2 = 0;
+ int num_inst = 0;
+ int i = 100; //for loop
+
+ int mem_dump_set = 0;
+ int debug_set = 0;
+ int num_inst_set = 0;
+
+ /* Error Checking */
+ if (argc < 2) {
+ printf("Error: usage: %s [-m addr1:addr2] [-d] [-n num_instr] inputBinary\n", argv[0]);
+ exit(1);
+ }
+
+ initialize(argv[argc-1]);
+
+ //for checking parse result
+ //print_parse_result();
+
+ while (count != argc-1) {
+
+ if (strcmp(argv[count], "-m") == 0) {
+ tokens = str_split(argv[++count],':');
+
+ addr1 = (int)strtol(*(tokens), NULL, 16);
+ addr2 = (int)strtol(*(tokens+1), NULL, 16);
+ mem_dump_set = 1;
+
+ } else if(strcmp(argv[count], "-d") == 0) {
+ debug_set = 1;
+
+ } else if(strcmp(argv[count], "-n") == 0) {
+ num_inst = (int)strtol(argv[++count], NULL, 10);
+ num_inst_set = 1;
+
+ } else{
+ printf("Error: usage: %s [-m addr1:addr2] [-d] [-n num_instr] inputBinary\n", argv[0]);
+ exit(1);
+ }
+ count++;
+ }
+
+ if (num_inst_set) {
+ i = num_inst;
+ }
+
+ if (debug_set) {
+ printf("Simulating for %d cycles...\n\n", i);
+
+ for(; i > 0; i--){
+ cycle();
+ rdump();
+
+ if (mem_dump_set) {
+ mdump(addr1, addr2);
+ }
+ }
+
+ } else {
+ run(i);
+ rdump();
+
+ if (mem_dump_set) {
+ mdump(addr1, addr2);
+ }
+ }
+
+ return 0;
+}
--
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