query

sir i have developed my own header file in case of lpc2148 arm7 in keil software which is..

#include<lpc214x.h>
void gpioset(int port,unsigned long set)
{
        if(port==0)
        {
IO0SET=set;
        }
                else
                {
IO1SET=set;
                }
}

and it is added in main file like..

#include<lpc214x.h>
#include "haresh.h"
#include "GPIO_SET.H"
#include "GPIO_CLEAR.H"
void delay(unsigned int);
int main(void)
{
gpiodir(0,0x0000000f);
while(1)
{
gpioset(0,0x0000000f);
delay(100);
gpioclear(0,0x0000000f);
delay(100);
}

}
void delay(unsigned int x)
{
unsigned int y,k;
for(y=0;y<x;y++)
{
        for(k=0;k<1275;k++);
}
}

and there is no error during the compilation but in case of simulation i cant get output and automatically break point is set at the starting of main file.

           #include<lpc214x.h>
           #include "haresh.h"
           #include "GPIO_SET.H"
            #include "GPIO_CLEAR.H"
           void delay(unsigned int);
                    int main(void)
here break point->  {
                   gpiodir(0,0x0000000f);
                  while(1)

please give me the solution as soon as possible...