/*
  ECE 3055 Computer Architecture and Operating Systems

  read_trace.c

  School of Electrical and Computer Engineering
  Georgia Institute of Technology
  Atlanta, GA 30332

*/

#include <stdio.h>

void main(int argc, char *argv[])
{
  FILE *fp;
  int i, type;
  long long unsigned address;
  unsigned int instr;
  unsigned int masked_addr;

  if (argc==1) {
    fprintf(stderr, "Usage: <your read_trace binary> <input file>\n");
    exit(-1);
  }

  // open trace file for reading
  fp = fopen(argv[1], "r");

  // read first 100 lines of trace file for testing; 
  // address holds virtual address in unsigned int format;
  // 
  // Your final program must read through the end of each trace 
  // but you might want to test it on the first 100 lines
  // or so before running it on the entire trace file!

  i = 0;
  while ( (fscanf(fp, "%d %llx %x", &type, &address, &instr))!=EOF && i<100) {
    // read 1 line of trace file at a time

    // example of bit-wise operation in C;
    // mask off all but the 2nd least significant hex digit,
    // shift right by 4 bits, and print address in hex and
    // masked shifted address in decimal

    masked_addr = (address & 0x000000f0) >> 4;
    printf("%12llx        %2d\n", address, masked_addr);
  
    i++;
  }
  
}