Editing Trampoline (computing) (section)

==Low-level programming==
Trampolines (sometimes referred to as [[indirect jump]] vectors) are memory locations holding addresses pointing to [[interrupt]] service routines, [[I/O]] routines, etc.  Execution jumps into the trampoline and then immediately jumps out, or bounces, hence the term ''trampoline''. They have many uses:

* Trampoline can be used to overcome the limitations imposed by a [[central processing unit]] (CPU) architecture that expects to always find vectors in fixed locations.
* When an [[operating system]] is booted on a [[symmetric multiprocessing]] (SMP) machine, only one processor, the bootstrap processor, will be active. After the operating system has configured itself, it will instruct the other processors to jump to a piece of trampoline code that will initialize the processors and wait for the operating system to start scheduling threads on them.