1. For a function with prototype long decode(long x, long y, long z); gec generates the following assembly code: decode: movq %rdi, %rax imulq %rsi, %rax adda %rdx, %rsi subq %rsi, %rax sarq $3,%rax ret Parameters x, y, and z are passed in registers %rdi, %rsi, and %rdx. The code stores the return value in register %rax. Reverse-engineer decode: write C code for decode that will have an effect equivalent to the assembly code shown