Re:Finding a CPU Design Bug in the Xbox 360 (2018)
by fulafel on Saturday June 12, 2021 @03:01AM
(#27482269)
There's a "branch hint" in PowerPC, I wonder if that's acted on by the Xenon CPU in question.
edit: it's discussed in the comments as well but they don't know either. The author responds: "I can’t remember how PowerPC branch hints work but if the branch hint overrode the branch predictor then it could have avoided the bug."
edit: it's discussed in the comments as well but they don't know either. The author responds: "I can’t remember how PowerPC branch hints work but if the branch hint overrode the branch predictor then it could have avoided the bug."