HW24
COP-3402

1. Draw the stack frames for the following two functions (after running main and calling f, but before f returns). Remember to include

   • the return address,
   • the old base pointer, and
   • the local variables

   function main
   localVariables retval x
   x := 2
   retval := call f
   return x
   end function
   

   function f
   localVariables x
   parameters x
   x := 3
   return x
   end function
   

2. Write mov instruction(s) that implement x := 2 above in function f.
3. In the x86 64 System V ABI, how are parameters passed?
4. The following are the contents of a stack frame, label which ones are caller created and which are callee created in the x86 64 System V ABI:
   • Stack parameters
   • Return address
   • Local variables
   • Old base pointer