Question $8(4$ points$)$

Suppose we want to generate assembly code for the following C function:

$```$

$\{$

x ;

x $>>=$ n;

return x;

$\}$

$```$

long shift$\_$left$4\_$rightn$($long x$,$ long n$)$

The code that follows is a portion of the assembly code that performs the actual shifts and leaves the final value in register $\backslash \%$rax. Two key instructions have been omitted. Parameters x and n are stored in registers $\backslash \%$rdi and $\backslash \%$rsi, respectively.

long shift$\_$left$4\_$rightn$($long $\backslash ($ x $\backslash ),$ long $\backslash ($ n $\backslash ))$

$\backslash ($ x $\backslash )$ in $\backslash \%$rdi, $\backslash ($ n $\backslash )$ in $\backslash \%$rsi

shift$\_$left$4\_$rightn:

movq $\backslash \%$rdi, $\backslash \%$rax $\backslash$#Get x

$```$

$---------------------$ # x

movl $\%$esi, $\%$ecx # Get n $(4$ bytes$)$

# x $>>=$ n

$```$

Fill in the missing instructions, following the annotations on the right. The right shift should be performed arithmetically.