#include "kernel.h"	// general kernel config & includes
#include "console.h"	// this will allow us to write to screen

// TODO: cleanup . how can i compile it without the includes!??

///////

void int_kb_handler();
void int_clock_handler();
////////// KERNEL MAIN///// /////
//

// test handler
void int_test_handler()
{
    __asm__("pusha");

    scr_put_string("inside software interrupt handler 88");

    __asm__("popa");
    __asm__("leave");
    __asm__("iret");

}

void kernel_main()
{
    
    // clear console
    scr_clear();

    // hello message
    scr_put_string_nl(KERNEL_HELLO_MESSAGE);
    
    //pit config
    timer_init();
    scr_put_string_nl("Configured PIT Channel 0 : Mode 2 : 1/25 s.");

    /*
    //probe memory
    scr_put_string_nl("Probing core memory...");
    char *prober=0xf000;

    for(;prober<0xfffffff;prober+=0xf00)
    {
	*prober='x';
	if(*prober!='x')break;
    
    }

    
    //0xA5000
    scr_put_hex((uint32_t)prober>>16);
    scr_put_hex((uint32_t)prober&0xffff);
    scr_put_string_nl(" finished!");
    //

    */

    uint16_t *memmap=0x7c00+0x120;
    uint32_t avail_mem=0;

    //print memory map:
    
    while(1)
    {
	if(memmap[8]==0)break;
	if(memmap[8]==1)
	{
	    avail_mem+=memmap[4]+(memmap[5]<<16); 
	}
	//bytes: 8 8 4 4// 
	//scr_put_hex(memmap[3]);
	//scr_put_string(" ");
	//scr_put_hex(memmap[2]);
	//scr_put_string(" ");
	scr_put_hex(memmap[1]);
	scr_put_string(" ");
	scr_put_hex(memmap[0]);
	scr_put_string(" ");
//	scr_put_hex(memmap[4]);
//	scr_put_string(" ");
//	scr_put_hex(memmap[5]);
//	scr_put_string(" ");
//	scr_put_hex(memmap[6]);
//	scr_put_string(" ");
//	scr_put_hex(memmap[7]);
	

	scr_put_string(" - ");
//	scr_put_hex(memmap[8]);
//	scr_put_string(" ");
//	scr_put_hex(memmap[9]);
//	scr_put_string(" ");
//	scr_put_hex(memmap[10]);
//	scr_put_string(" ");
//	scr_put_hex(memmap[11]);
//	scr_put_string(" ");
	//scr_put_hex(memmap[7]);
	//scr_put_string(" ");
	//scr_put_hex(memmap[6]);
	//scr_put_string(" ");
	scr_put_hex(memmap[5]);
	scr_put_string(" ");
	scr_put_hex(memmap[4]);

	scr_put_string(" : ");
	scr_put_hex(memmap[8]);
//	scr_put_string(" ");
//	scr_put_hex(memmap[9]);
	

	scr_put_string_nl("");

	memmap+=12;
    }

    
    scr_put_string("Total Available Mem: ");
    scr_put_hex(avail_mem>>16);
    scr_put_string(" ");
    scr_put_hex(avail_mem&0xffff);
    scr_put_string_nl(" byte");
    scr_put_string_nl("");





    // init and interrupt decriptor table 
    int_init(0x08);
    int_install();

    // setup custom interrupts
    // remember that we shifted all interrupts with the pic by 32
    // so clock = 32 (irq 0)
    // keyboard = 22 (irq 1)
    // etc..
    
    // install PIT interrupt handler
    int_install_ir(32, 0b10001110, 0x08,&int_clock_handler);

    // install keyboard interrupt handler
    int_install_ir(33, 0b10001110, 0x08,&int_kb_handler);

    // install test software interrupt handler
    int_install_ir(88, 0b10001110, 0x08,&int_test_handler);

    // now we can enable interrupts back again
    int_enable();
    scr_put_string_nl("Interrupts are up and running");

    //init shell
    shell_init();

    // kernel main loop
    while(1)
    {

	
    }
 
}