AVR has http://www.nongnu.org/avr-libc/user-manual/group__util__atomic.html
As far as I know, it just inserts appropriate disable/reenable interrupt instructions. Globally disabling interrupts tends to be cheap on microcontrollers, and of course it's much easier than trying to get the optimizer to search for a single instruction that might not exist. Perhaps the optimizer can discard the DINT/EINT instructions if they end up surrounding a single instruction; that seems like it would be standardish peephole optimization, though at a rather low-level... BillW ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Mspgcc-users mailing list Mspgcc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mspgcc-users
