.intel_syntax noprefix

.section .text
	.global switch_thread

switch_thread:
	push ebx
	push ebp
	push edi
	push esi

	mov eax, [current_tcb]

	// save the current stack pointer to the old stack
	mov [eax+0], esp

	// stack pointer + the 4 regs pushed
	// and + 1 to get the argument (next thread)
	mov esi, [esp+(4+1)*4]
	mov [current_tcb], esi

	mov eax, [current_tcb]

	mov esp, [eax+0] // get esp

	pop esi
	pop edi
	pop ebp
	pop ebx

	iret