ISR Argument Proposal Request

[Eric Valette]

gregory.menke at gsfc.nasa.gov wrote:
 > On the R3000, the
> difference between an exception and an interrupt is very small and
> handling them all in one routine with one type of stack frame has some
> advantages.

On the other hand, this is false on many other processors as nowadays 
IRQ dispatch, masking, prioritizing is usually done by programmable 
interrupt controller. I would tend to agree that in general, raw 
execption handling and irq handling are quite similar but we are not 
talking about this here.

Another example : why would I like to store 255 void when I just have 
seven or fifteen different irqs. Why shoul I push a frame when it is 
used only by exception code and not irqs...

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