.section .text

.global gdt_load
.type gdt_load, @function

# gdt_load(struct gdt_ptr *gdtp)
# Loads GDTR with the specified GDT pointer.
# Expects entries 1 and 2 (offsets 0x08 and 0x10) to be kernel
# code and kernel data respectively.
gdt_load:
	pushq %rbp
	movq %rsp, %rbp

	lgdt (%rdi)

	mov $0x10, %ax
	mov %ax, %ss
	mov %ax, %ds
	mov %ax, %es
	mov %ax, %fs
	mov %ax, %gs

	movabsq $(1f), %rax

	push $0x08
	push %rax

	lretq

1:
	popq %rbp
	ret