Trace through the assembly code for fib and mark which registers are modified during the execution of a non-trivial (i.e., not 0 or 1) argument call:

Not %rsi

Assembly code below first picture

\%rax %rbx \%rcx \%rdx \%rsi \%rdi %rsp %rbp We will now have you write some assembly to see the effects of the register saving conventions. Here we will compute a specified Fibonacci number recursively. A C implementation would look something like this: Download or copy the buggy version of its corresponding assembly provided here: fib.s The initial assembly code just for the function fib is copied below for your reference (line numbers also shown)