On 14.07.17 19:18, Georg-Johann Lay wrote: > The according avr-gcc feature is also upstream now. It adds a new option > -m[no-]gas-isr-prologues and a new function attribute to disable __gcc_isr > generation for individual ISRs: > > http://gcc.gnu.org/onlinedocs/gcc/AVR-Function-Attributes.html > > If you want to play around with it, you need Binutils that implement PR20296 > (e.g. Binutils GIT master or upcoming 2.29) and avr-gcc that implements > PR81268 (GCC SVN trunk r250093 or newer). > > The feature is enabled per default for all optimization levels except for > -O0 and -Og.
Thank you, Johann, for all the work I've seen coming in on binutils and gcc-patches. The stuff I have in hand still uses assembler ISRs, easily linkable with C code. After 30 years of it, I still find it easier to write an ISR in assembler than C - and I know where each part microsecond is expended, so latency is known in advance. It is very encouraging, though, to see continuing development of the AVR toolchain. Erik _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org https://lists.nongnu.org/mailman/listinfo/avr-gcc-list
