.text
main:
	li	$v0, 4
	la	$a0, msg1
	syscall

	li	$t0, 22
	move	$a0, $t0
	move	$t0, $ra
	jal	f

	move	$ra, $t0

	li	$v0, 4
	la	$a0, msg3
	syscall

	li	$v0, 0
	jr	$ra

f:
	move	$t1, $a0
	li	$v0, 4
	la	$a0, msg2
	syscall

	li	$v0, 1
	move	$a0, $t1
	syscall

	li	$v0, 11
	la	$a0, '\n'
	syscall

	jr	$ra

	.data
msg1:
	.asciiz "calling function f\n"
msg2:
	.asciiz "in function f\n"
msg3:
	.asciiz "back from function f\n"