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SubjectRe: [RFC] [PATCH 1/7] User Space Breakpoint Assistance Layer (UBP)
Jim Keniston wrote:
> Not really. For #3 (boosting), you need to know everything for #2,
> plus be able to compute the length of each instruction -- which we can
> now do for x86. To emulate an instruction (#4), you need to replicate
> what it does, side-effects and all. The x86 instruction set seems to
> be adding new floating-point instructions all the time, and I bet even
> Masami doesn't know what they all do, but so far, they all seem to
> adhere to the instruction-length rules encoded in Masami's instruction
> decoder.

Actually, current x86 decoder doesn't support FP(x87) instructions.(even
it already supported AVX) But I think it's not so hard to add it.

Thank you,

--
Masami Hiramatsu

Software Engineer
Hitachi Computer Products (America), Inc.
Software Solutions Division

e-mail: mhiramat@redhat.com



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