If it takes a parameter, as mentioned it sometimes does, then the advising function can jump back to an address given by a parameter, +1. Ie, comefrom 80

If it takes a parameter, as mentioned it sometimes does, then the advising function can jump back to an address given by a parameter, +1. Ie, comefrom 80 ... stuff goto 81 You then design your methods to always have a NOP at the start, to allow comefrom to inject its jump.