all $>$ C j$\_$instructions.h $>...$

These are the J$-$instructions implemented by the simulted MIPS processor

$4//$J instruction: opcode $(6$ bits$)$ unused $(10$ bits$)$ address $(48$ bits$)$

$5$

$6$ void j$.($uint$64$t instruction$)$;

$7$ void jal$($uint$64$t instruction$)$;

$8$

$9$You will need to implement the MIPS R$-$instructions $($other than syscall$)$ in a file called r$\_$instructions.c$.$ In the r$\_$instructions.h file that I provided you, there is a list of functions that you have to implement $$ each one corresponding to a MIPS R$-$instruction. As described in the project description $($downloaded in Step $1,$ above$),$ each R$-$instruction function $($add$,$ sub, sll$,$ etc.$)$ should take as its parameter the full $64-$bit instruction and perform the appropriate operation. Notice that, since each function performs the operation of a single instruction, the function does not have to examine the opcode or funct fields of the instruction $$ the function already knows which instruction is being executed! Within each function, though you will need to use masks and shifting to extract the values of the rs$,$ rt$,$ rd$,$ and shamt $($if necessary$)$ fields of the instruction.