#include "main.h"
#include "mem.h"
#include "disk.h"
#include "string.h"
#include "tlb.h"
#include <stdio.h>
#include <assert.h>

char Disk[DISK_SIZE];

unsigned numwrites = 0;
unsigned numreads  = 0;

/* Check that the arguments are within range */
void CheckArgs(unsigned block, unsigned paddress) {
  if (paddress > PHYS_MEM_SIZE) {
    fprintf(stderr,
	 "Error: Attempt to access out of bounds paddress %p\n",paddress);
    fflush(stderr);
    /* dump out a core file here so that you can run gdb */
    assert(0);
  }
  if (block > MAX_BLOCK) {
    fprintf(stderr,
	 "Error: Attempt to access out of bounds disk block %d\n",block);
    fflush(stderr);
    /* dump out a core file here so that you can run gdb */
    assert(0);
  }
}


void ReadBlock(unsigned block, unsigned long paddress) {
    CheckArgs(block,paddress);
    numreads++;
    memcpy(&(Phys_Memory[paddress]), &(Disk[block*BLOCK_SIZE]),BLOCK_SIZE);
}

void WriteBlock(unsigned block, unsigned long paddress) {
    CheckArgs(block,paddress);
    numwrites++;
    memcpy(&(Disk[block*BLOCK_SIZE]), &(Phys_Memory[paddress]),BLOCK_SIZE);
}