Messages in this thread | | | Date | Mon, 18 Jan 2010 10:58:25 -0500 | From | Masami Hiramatsu <> | Subject | Re: [RFC] [PATCH 1/7] User Space Breakpoint Assistance Layer (UBP) |
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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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