Alex Ionescu 7eda2f21b7 [KERNEL32]: Optimize SwitchToFiber to simply use "ret" to jump between fibers, instead of saving EIP and doing a JMP.
Bug #50: SwitchToFiber needs to check if FXSR is *NOT* present in order to skip using ldmxcsr/stmxcsr. Previously, it would check if it's unsupported, and jump past the instruction if it was (resulting in invalid opcode instructions on older systems)
50 bugs. Penance has been paid.

svn path=/trunk/; revision=52807
2011-07-23 12:08:36 +00:00
2011-04-05 21:20:42 +00:00
2011-07-17 23:22:34 +00:00
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