test_branches_jumps.a

############################################################################
# 
# A simple (and incomplete) demonstration of one you might test basic
# I-type and R-type instructions.
#
# When constructing a complete test suite, be sure to
# 
# (1) Test all operations
# (2) Test operations with several different inputs. 
# (3) Choose inputs carefully.  For example, suppose you switched
#     control wires so that addi instructions actually executed as ori
#     instructions.  The line addi "$3, $3, 0", will work correctly in
#     spite of the mistake.
#
###########################################################################

start:
addi $5, $5, 1
addi $6, $zero, 5
addi $7, $zero, 5
bne $5, $6, start		# should not be equal
addi $5, $5, 5345
jal test_beq	
addi $10, $zero, 23478768
addi $11, $10, 3435534
add $12, $10, $11
j exit

test_beq:
addi $8, $zero, 4
beq, $8, $8, test_jr	# should be equal
j exit					# should not run

test_jr:
addi $9, $zero, 3
jr $ra

exit: