Can someone please help me fix my code

the code is what is within main

Given the following C program and the mapping of registers to variables, complete the MIPSzy implementation of Main. Do not implement return $0$; in main$().$

int Dif$($int a$,$ int b$)\{$ return a $-$ b; $\}$ int Sum$($int a$,$ int b$)\{$ return a $+$ b; $\}$ int main$()\{$ int x$,$ y; w $=$ Sum$($x$,$ y$)$; z $=$ Dif$($y$,$ x$)$; return $0$; $//$ Do not implement $\}$

RegistersVariables$t$0$x$t$1$y$t$2$w$t$3$z

Hints: Use program stack to pass arguments, return values, and preserve saved registers. Remember to pop the stack after each function returns.

Ex: If the values of $t$0$ and $t$1$ are initialized in the simulator as:

RegistersData$t$05$$t$110$

the results are stored in $t$2$ and $t$3$:

RegistersData$t$05$$t$110$$t$215$$t$35$

Note: Use the $\text{'}+\text{'}$ button under the Registers display to initialize register values for $t$0$ and $t$1.$

addi $sp$,$ $zero, $8188$ # Assume program stack starts at $8188.$ Do not modify.

# Procedure Main

Main:

# Type your code here.

addi $sp$,$ $sp$,-8$

sw $t$0,0($$sp$)$

sw $t$1,4($$sp$)$

jal Sum

addi $sp$,$ $sp$,8$

addi $sp$,$ $sp$,-8$

sw $t$0,0($$sp$)$

sw $t$1,4($$sp$)$

jal Dif

lw $t$3,0($$sp$)$

addi $sp$,$ $sp$,8$

j End

# Procedure Sum $($Do not modify$)$

Sum:

lw $t$0,8($$sp$)$

lw $t$1,4($$sp$)$

add $t$2,$ $t$0,$ $t$1$

sw $t$2,0($$sp$)$

jr $ra

# Procedure Dif $($Do not modify$)$

Dif:

lw $t$0,8($$sp$)$

lw $t$1,4($$sp$)$

sub $t$2,$ $t$0,$ $t$1$

sw $t$2,0($$sp$)$

jr $ra

End: Initial storage

Resulting storage

Yours

Graded