#This program demonstrate looping and branching.
#author: Hornick
#CS2710 - 12/16/12

.text	#.text directive (default) just tells the assembler where to put the instructions in memory

main:	#this label is assigned the value of the address of the next instruction

# if( t0==t1 )
#   s0 = 0;
# else
#   s0 = 1;
	beq	$t0, $t1  are_equal 	# if(t0==t1) jump to instruction following label "are_equal" 
	bne	$t0, $t1  not_equal 	# if(t0!=t1) jump to instruction following label "not_equal"
are_equal:
	addi	$s0, $zero, 1		# set s0=1 if t0=t1
	j	continue		# jump to the instruction following the "continue" label
not_equal:
	addi	$s0, $zero, 0		# set s0=1 if t0!=t1
	j	continue		# jump to the instruction following the "continue" label (not really needed, since that's the next instruction anyway)

continue:
	j 	continue		# repeat this instruction forever	

# if( t0<t1 )
#   s0 = 0;
# else
#   s0 = 1;
	slt	$t2, $t0, $t1		# if(t0<t1) t2=1, otherwise t2=0
	bne	$t2, $zero, less_than 	# if(t2!=0)(ie if t2==1) jump to label "less_than" 
	beq	$t2, $zero, gr_or_eq	# if(t2==0) jump to label "gr_or_eq"
less_than:
	addi	$s0, $zero, 1		# set s0=1 if t0<t1
	j	repeat			# jump to the instruction following the "repeat" label
gr_or_eq:
	addi	$s0, $zero, 0		# set s0=1 if t0>=t1
	j	repeat			# jump to the instruction following the "repeat" label (not really needed, since that's the next instruction anyway)

repeat:
	j 	repeat			# repeat this instruction forever