branching to remove excess to narrow down problem

src/test/Fibonacci.asm

@@ -0,0 +1,40 @@
+.data
+	welcomeMessage: .asciiz "Welcome to a MIPS assembly Fibonacci Sequence calculator!\nThis will calculate the nth term of the Fibonacci Sequence.\n"
+	prompt: .asciiz "Enter a number (n, input n > 2) to find the nth term:"
+	foundTerm: .asciiz "The nth term is: "
+.text
+main:
+	li $v0, 4 					# syscall 4 is to print a string
+	la $a0, welcomeMessage				# store the ascii string in register a0
+	syscall						# print
+	jal getInput 					# get the user input
+	jal fibonacci					# calculate the nth fibonacci term
+	move $a0, $v0					# move the returned term to register a0
+	li $v0, 1					# syscall 1 is to print an int
+	syscall						# print
+  	ori $v0, $0, 10       				# system call code 10 for exit
+  	syscall               				# exit the program
+getInput:
+	li $v0, 4 					# syscall 4 is to print a string
+	la $a0, prompt					# store the ascii string in register a0
+	syscall						# print
+	li $v0, 5 					# syscall 5 is for reading an int
+	syscall						# read an int from the user
+	move $a0, $v0 					# load input into register a0
+	jr $ra 						# return to caller
+fibonacci:
+	move $s1, $a0 					# Copy the nth term
+	li $t0, 2 					# Counter
+	li $t1, 0					# Prev value
+	li $t2, 1					# Current value
+	li $t3, 0 					# Next value
+	while:
+		bge $t0, $s1, done 			# While the counter is less than n
+			add $t3, $t1, $t2		# Sum the previous and current values and save in register t3
+			move $t1, $t2			# Shift current value to previous value
+			move $t2, $t3 			# Shift next value to current value
+			addi $t0, $t0, 1 		# Increment counter
+			b while 			# Jump back to start of while loop
+	done:
+		move $v0, $t2				# Move current value to register v0
+		jr $ra					# Return to caller

src/util/functionAssigner.h

@@ -2,7 +2,6 @@
         FUNCTION(add)       \
         FUNCTION(jr)        \
         FUNCTION(syscall)   \
-        FUNCTION(li)        \
         FUNCTION(addu)      \
         FUNCTION(and)       \
         FUNCTION(nor)       \
@@ -12,6 +11,8 @@
         FUNCTION(sll)       \
         FUNCTION(srl)       \
         FUNCTION(addi)      \
+        FUNCTION(addiu)     \
+        FUNCTION(li)        \
         FUNCTION(sub)       \
         FUNCTION(subu)      \
         FUNCTION(jal)       \