csim-starter

csim-hint.c

#include <getopt.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <stdint.h>
#include <string.h>
#include <errno.h>
#include "cachelab.h"

void load_trace(char* tracefile)
{
    char buf[1000];
    uint64_t addr=0;
    unsigned int len=0;
    FILE* fp = fopen(tracefile, "r");

    if (!fp){
        fprintf(stderr, "%s: %s\n", tracefile, strerror(errno));
        exit(1);
    }

    while (fgets(buf, 1000, fp) != NULL) {
        if (buf[1]=='S' || buf[1]=='L' || buf[1]=='M') {
            sscanf(buf+3, "%lx,%u", &addr, &len);
            printf("%c, %lx\n", buf[1], addr);
        }
    }

    fclose(fp);
}


void print_usage(char* argv[])
{
    printf("Usage: %s [-hv] -s <num> -E <num> -b <num> -t <file>\n", argv[0]);
    printf("Options:\n");
    printf("  -h         Print this help message.\n");
    printf("  -v         Optional verbose flag.\n");
    printf("  -s <num>   Number of set index bits.\n");
    printf("  -E <num>   Number of lines per set.\n");
    printf("  -b <num>   Number of block offset bits.\n");
    printf("  -t <file>  Trace file.\n");
    exit(0);
}


int main(int argc, char* argv[])
{
    char c;
    int s, S, E, b, B;
    char *trace_file;

    while((c=getopt(argc,argv,"s:E:b:t:")) != -1){
        switch(c){
        case 's':
            s = atoi(optarg);
            break;
        case 'E':
            E = atoi(optarg);
            break;
        case 'b':
            b = atoi(optarg);
            break;
        case 't':
            trace_file = optarg;
            break;
        default:
            print_usage(argv);
            exit(1);
        }
    }

    if (s == 0 || E == 0 || b == 0 || trace_file == NULL) {
        printf("%s: Missing required command line argument\n", argv[0]);
        print_usage(argv);
        exit(1);
    }

    S = (unsigned int) pow(2, s);
    B = (unsigned int) pow(2, b);
    
    printf("Using cache with S=%d, E=%d, B=%d\n", S, E, B);
 
    load_trace(trace_file);

    printSummary(0, 0, 0);
    return 0;
}