Re: [avr-libc-dev] [bug #14616] definition of sei() in interrupts.h is faulty

[Joerg Wunsch]

As Russell Shaw wrote:

> Linux code has rmb() and wmb() for "read memory barrier" and "write
> memory barrier", to solve that reordering problem. Something might
> be learned from finding how those macros are defined.

They end up in a spaghetti of header files, but if my brain can
trace that right, they simply end up in an

__asm__ volatile(::"memory")

unless the underlying CPU offers a better instruction to implement
this.

-- 
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)