/*
 * dlxrun.c
 * $Id: dlxrun.c,v 1.3 2003/11/09 13:18:21 mah Exp $
 * Christoph Berg <cb@cs.uni-sb.de>
 *
 * 011220
 */

#include <assert.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "dlx.h"
#include "help.h"
#include "hex.h"
#include "memory.h"
#include "terminal.h"

#define VERSION "v4.0alpha"

// ^C handling --------
int sigint;

void sigint_handler() {
    sigint = 1;
}
// --------------------

void check_machine() {
    /*
     * If any of these checks fail: this program was written for the x86
     * architecture (little endian, 4 bytes integers). If you are going to
     * run it on a different architecture, you probably have to change (at
     * least) the memory referencing code (that is, (int *) casts).
     * You will also have to look at the include files and the endian
     * conversion in hex.c
     */
    char p[] = "1234";
    assert(*(int *)p == 0x34333231); // check for little endian
    assert(sizeof(int) == 4); // check for integer size 32 bit
}


int main(int argc, char **argv) {
    printf("dlxrun " VERSION " (" __DATE__ ")\n");

    check_machine();
    init_state();
    state.stopmask = STOP_TRAP_EXIT;    // only stop for exit
    init_memory(INIT_MEMORY_SIZE);

    if(argc != 2) {
        printf("Usage: %s file\n", argv[0]);
    }
    load_file(argv[1]);

    do {
        step();
    } while (!state.stopflag);

    return 0;   // TODO make it return correct exit code
}