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* asm-generic: add generic atomic.h and io.hArnd Bergmann2009-06-111-0/+300
atomic.h and io.h are based on the mn10300 architecture, which is already pretty generic and can be used by other architectures that do not have hardware support for atomic operations or out-of-order I/O access. Signed-off-by: Arnd Bergmann <arnd@arndb.de>