Interrupt Service Routine Defines for ARM

[Stefan]

When comparing the file chcore.h from ChibiOS_3.0.2\ChibiOS_3.0.2\os\rt\ports\ARM with older versions of this file (e. g. http://chibios.sourceforge.net/html/por ... tml#l00279) I'm wondering why some definitions have been changed significantly, in particular the macros PORT_IRQ_PROLOGUE, PORT_IRQ_EPILOGUE and PORT_IRQ_HANDLER. Where is the assembler code from the prologue and epilogue gone? Why does PORT_IRQ_HANDLER suddenly return a boolean?
@Giovanni: Have you ever thought of using the function attribute interrupt("IRQ") there just like you did in PORT_FAST_IRQ_HANDLER?

[Giovanni]

Hi,

The IRQ handler is written in asm, it calls the C handlers but the low level stuff is done in the asm part, handlers are normal C functions. The boolean is used in order to communicate to the asm part if a reschedule is required.

interrup("IRQ") does not perform the necessary registers work done in the asm handler.

See chcoreasm.s at line 138 and following.

Giovanni