[Geekos-devel] Project 3 scheduling question

[<wm...@ao...>]

This is from lowlevel.asm at Switch_To_Thread:
..
??? ; Load the pointer to the new thread context into eax.
??? ; We skip over the Interrupt_State struct on the stack to
??? ; get the parameter.
??? mov??? eax, [esp+INTERRUPT_STATE_SIZE]

..

Why do we have to skip over the Interrupt_State struct on the stack? Switch_To_Thread seems only to be called for new threads. I don't see any place where the interrupt occurs to put info on the stack.? Am I missing something here?