add

.text

	li	$a0, 10

	jal	fact

	move 	$s0, $v0

	li	$v0, 10

	syscall

fact:

	addi $sp, $sp, -12 #Allocate space for return, arg, result

	sw $ra, 0($sp)

	sw $a0, 4($sp)

	li $t0, 1

	bge $a0, $t0, ELSE	#If arg >= 1

	sw $t0, 8($sp)

	j END

ELSE:

	addi $a0, $a0, -1	#n-1

	jal fact

	lw $a0, 4($sp)		#Load arg

	mul $t0, $a0, $v0	# t0 = arg * returnValue

	sw $t0, 8($sp)		# result = t0

END:

	lw $v0, 8($sp)		#Set return register = return

	lw $ra, 0($sp)		#Load return address

	addi $sp, $sp, 12	#Deallocate stack

	jr $ra			

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