1c182de9a9
Implement all futex atomic operations in assembler to not depend on the fuword() that does not allow to distinguish between -1 and failure return. Correctly return 0 from atomic operations on success. In collaboration with: rdivacky Tested by: Scot Hetzel <swhetzel gmail com>, Milos Vyletel <mvyletel mzm cz> Sponsored by: Google SoC 2007