Hi all, Is there an easy way to insert a few lines of asm code in an ISR before the prologue starts (at the ISR entry) and then some additional code after the epilogue (right before the RETI)?
There are a couple of reasons why I'm trying to do this: 1) To insert some pin toggling instructions so I can more accurately track time spent in various ISRs (including the register save/restores). 2) To switch to a different stack for some stack-hungry ISRs so that I don't have to reserve as much memory in each task's stack area when running a preemptive RTOS. I've been doing it for a few test scenarios by compiling to assembler and then manually inserting code in the generated asm, but it's pretty cumbersome. And I don't want to declare the ISRs as naked since I still want to the compiler to automatically generate the register save/restore code. Thanks for any ideas, -mark _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
