Untitled_Kernel/linker.ld

/*We have to write out this linker script so the linker knows where to put all the soup of stuff we put in start.s and main.c. i'll write out reasoning as i go. */
/*letting em know our entry point is actually label "start" in start.s, and not some function in the c file.*/
ENTRY(start)
SECTIONS
{
    /*start me at 1Mb because below that is x86 essential stuff, which we dont want to be written on top of.*/
	. = 1M;
    

	/* we're going to maintain 4K alignment - apparently useful for paging, and i'm not complaining about the lost space anyway. */
    /*our multiboot header from start.s - has to go at the beginning of the executable so the bootloader knows we're loadable.*/
	/*executable section*/
	.mb_sect :
    {
        *(.multiboot)
    }

    .lower_text :
    {
        *(.lower_text)
    }

    /* Higher half addressing! We'll have to also specify that we want to be physically placed at 1MB.*/
    . += 0xC0000000;

    _kernel_start = .;
    .text ALIGN (4K) : AT (ADDR (.text) - 0xC0000000)
	{
		*(.text)
	}

	/*general read only data*/
	.rodata ALIGN (4K) : AT(ADDR(.rodata) - 0xC0000000)
	{
		*(.rodata*)
        *(.gdt_sect)
        *(.idtr)
	}

	/*initialized rw data. */
	.data ALIGN (4K) : AT(ADDR(.data) - 0xC0000000)
	{
		*(.data)
	}

	/*uninitialized data, and our stack as defined in start.s*/
	.bss ALIGN(4K) : AT(ADDR(.bss) - 0xC0000000)
	{
		*(COMMON)
		*(.bss)
        *(.bootstrap_tables)
        *(.tss)
        *(.idt)
	}

    _kernel_end = .;

}