On Thu, Apr 04, 2013 at 08:40:58AM -0300, Diego Izidoro wrote: > Compiling with "-nodefaultlibs" should do the trick to remove the interrupt > code generation, that's the easy part. What i want is to manually build the > interrupt vector and implement the ISRs (complete with context saving and
I can point you to the related source code, if you're interested. The vector table layout is in avr-libc (avr-libc/crt1/gcrt1.S) - there is a vector macro defined for jumping to a handler, and then a bunch of macro invocations corresponding to each interrupt. > context restoring operations). It's kind of a challenge, where the compiler > is supposedly more primitive and doesn't know what it is an interruption. > The compiler knows about interrupts through the signal/interrupt attribute specified for the ISR. See gcc/config/avr/avr.c, and grep for signal. You should find a few predicate functions (avr_signal_function_p, avr_interrupt_function_p), and searching for their callers should get you started. Regards Senthil _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org https://lists.nongnu.org/mailman/listinfo/avr-gcc-list
