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RE: PATCH: Move operand/address-size override prefixes before SIMD prefix


On Thu, 7 Dec 2006, Menezes, Evandro wrote:

Thank you, but it does not. Because presence of both 0xf2 and 0xf3 in
the byte stream is not covered by this paragraph (perhaps the
situation is explained elsewhere in the manual?)

Yes, elsewhere: "The result of using multiple prefixes from a single group is unpredictable." (in "AMD64 Architecture Programmer's Manual Volume 3: General-Purpose and System Instructions", rev. 3.12, p. 3)


HTH

This does. Thank you both Evandro Menezes and H.J Lu.


--
vale


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