gcc and fiq

Development Boards MicroMod
1

Does anyone know the attribute in gcc that makes an interrupt routine use the fiq stack?

Thanks.

2

Hey,

guess this is what you’re looking for:

attribute ((interrupt(“FIQ”)));

Not sure what you mean by “that makes an interrupt routine use the fiq stack?” though. In FIQ mode, r13 is a banked register - therefor if the code executes in FIQ mode, it will use whatever stack is pointed at by r13_fiq.

Regards,

Dominic