Assume that we are executing our code on a $64-$bit machine using two$$s complement arithmetic for signed integral data types. Fill in the empty boxes in the table below for the following code segment $($show work$)$: $3.(10$ pts$.)$ Assume that we are executing our code on a $64-$bit machine using two's complement arithmetic for signed integral data types. Fill in the empty boxes in the table below for the following code segment $($show work$)$:

$```$

char x $=7$;

char y $=-1$;

unsigned char z $=0$xA$5$;

$```$

$4.(10$ pts$.)$ This problem tests your ability to complete an execution trace of assembly code. For the $32-$bit assembly code $($see fun:$)$ shown below, complete the stack diagram showing what would happen when all statements are executed down to the return statement ret. Identify the values stored in the $\backslash \%$eax register, and label where x and y are stored on the stack for the call to fun$(\backslash (\backslash$mathrm$\{$x$\},\backslash$mathrm$\{$y$\}\backslash )).$

a$.$ Based on the values shown on the stack, the function was called using fun$(\_\_\_,$ ;

b$.$ What value is returned?

fun:

movl $4(8$esp$),8$eax

sall $\backslash$$$3,8$eax

addl $8(8$esp$),8$eax

addl $\backslash$$$8,8$eax

ret $)$; $--$