# Live coding exercises from recap lecture
# A simple example of a program with functions 
# These functions have no parameters or return values 
# (except for main that returns 0)
# 

	.data
msg_main1: 	.asciiz "I am in the main\n"
msg_main2: 	.asciiz "I am about to return from the main function\n"
msg_f1: 	.asciiz "I am in the f function\n"
msg_f2: 	.asciiz "I am about to return from the f function\n"
msg_g1:		.asciiz "I am in the g function\n"

	.text
main:       
main__prologue:
	push	$ra
main__body:
	li	$v0, 4		#printf("I am in the main");
	la	$a0, msg_main1
	syscall
    
	jal	f		# f()	
    
	li	$v0, 4		#printf("I am in the main");
	la	$a0, msg_main2
	syscall
    
	li	$v0, 0		# set return value for main to be 0
main__epilog:
	pop	$ra
	jr	$ra		# return from main to (__start)

f:
f__prologue:
	push	$ra
f__body:
	li	$v0, 4		#printf("I am in the f function");
	la	$a0, msg_f1
	syscall
    
    	jal	g		# g()
    
    	li	$v0, 4		#printf("I am in the f function");
	la	$a0, msg_f2
	syscall

f__epilog:
	pop	$ra
	jr	$ra		#return
    
g:   
g__prologue:
	push	$ra
g__body:
	li	$v0, 4		#printf("I am in the g function");
	la	$a0, msg_g1
    	syscall
g__epilog:
	pop	$ra
    	jr	$ra		#return