.data
msg:	.asciiz "hello world"
endl:	.asciiz "\n"

	.text		
	.globl main
main:	
	addi $sp,$sp,-1	#Decrement sp
	sb $0,0($sp)	#Store 0 at the top of stack

	la $t1, msg		# Load address of msg
	
L0:	
	lb $t0,0($t1)	# Load the current character
	beq $t0,$0, L1	# If 0, we're done loading the string. Move on
	addi $sp,$sp,-1	# Decrement sp
	sb $t0,0($sp)	# Store current character on top of stack
	addi $t1,$t1,1	# Move to the next character
	j L0	

L1:	
	la $t1,msg		# Load address of msg again
L2:	
	lb $t0,0($sp)	# Load charcter from top of stack
	addi $sp,$sp,1	# Increment sp 
	sb $t0,0($t1)	# Store current character in memory
	beq $t0, $0, L3	# If we get 0, we're done (We put 0 in stack for this check).
	addi $t1,$t1,1	# Next memory location
	j L2

L3:	
	la $a0,msg  	# Print the reversed string
	li $v0,4	
	syscall

	la $a0,endl		# Print "\n" 
	li $v0,4	
	syscall

	li $v0,10		# Exit
	syscall