This question is about assembly instructions and operand modes. For each of the following descriptions, give a single x86-64 assembly instruction and operands to implement the described semantics. Example: Copy the low-order 4 bytes of register %rdi into the low-order 4 bytes of register %rdx.

movl %edi, %edx

a. Load 8 bytes from memory beginning at the address stored in %rdi, into %rax. b. Store the low-order 2 bytes of %rcx into memory 16 bytes past the address stored in %rsi. c. Multiply the 8-byte value in %rax by 8. Do not use mul or imul. d. Multiply the 8-byte value in %rdx by 9, subtract 14, and put the result in %rsi.