/*
 * Multiboot 
 */
.set ALIGN,    1<<0             /* align loaded modules on page boundaries */
.set MEMINFO,  1<<1             /* provide memory map */
.set FLAGS,    ALIGN | MEMINFO  /* this is the Multiboot 'flag' field */
.set MAGIC,    0x1BADB002       /* 'magic number' lets bootloader find the header */
.set CHECKSUM, -(MAGIC + FLAGS) /* checksum of above, to prove we are multiboot */

.section .multiboot
.align 4
.long MAGIC
.long FLAGS
.long CHECKSUM
 

.section .bss
.align 16
stack_bottom:
.skip 16384 # 16 KiB
stack_top:
 
.section .text
.include "./src/kernel/arch/i386/irs_table.s"
.include "./src/kernel/arch/i386/irq_table.s"
.include "./src/kernel/arch/i386/idt/idt.s"
.include "./src/kernel/arch/i386/paging.s"


.global _start
.type _start, @function
_start:
	/*Setup the stack pointer to point to the beginning of our stack */
	/* I believe its a high address growing down to lower adress for the stack on x86*/
	mov $stack_top, %esp

	/*Reset EFLAGS*/
	pushl $0 
	popf 

	/* push the pointer to the Multiboot information structure*/
	pushl %ebx

	/* push the magic value */
	pushl %eax
	
	call early_main
	cli
	.global load_gdt
	load_gdt:
		lgdt gdt

		# set the segment selecters

		movw $0x10, %ax 
		movw %ax, %ds
		movw %ax, %es
		movw %ax, %fs
		movw %ax, %gs
		movw %ax, %ss
		ljmp $0x08, $flush 
		
		flush:
        
		
		#load idt
		call init_idt
        sti
        
        # Try enable A20
		# mov $0x2401, %ax
		# int $0x15


		# enable protected mode
		mov %cr0, %eax 
		or $1, %eax
		mov %eax, %cr0

		
		call kernel_main


		cli
	1:	hlt
		jmp 1b
	

.include "./src/kernel/arch/i386/gdt/gdt.s"