Paul Brook wrote:
It should be good to have a well-defined modular IRQ routing
architecture in the Qemu.
We've got most of one for the ARM targets (see hw/arm_pic.h). This file
contains both the target independent bits and the ARM specific bits for
emulating the CPU IRQ/FIQ pins.
Annother possibility to abstract this to use a single interrupt line object
rather than an {object,index} pair. This simplifies code that that raises
interrupts, at the expense of some complication in the code to create
interrupt controllers.
I prefer to have a new type 'QEMUBoolSignal' which can be used for any
boolean signal. A function could be called to change its level and
several clients could set a callback ("listener") to be informed that
its level changes.
Regards,
Fabrice.
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