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


> Yes i know and now realize the mistake i made in the example 
> byte stream -
> the line should have read:
> 0xf3 0x66 0x0f 0x11 ..
> 
> The original question remains:
> <quote>
> What will it be? `movss', `movupd' #UD? Does the first prefix takes
> precedence or is there some sort of built in precedence rules (i.e.
> not all prefixes are equal)?
> </quote>

Off the top of my head, the opcode 0x0f 0x11 preceeded by both 0xf3 and 0x66 is an illegal instruction.

-- 
_______________________________________________________
Evandro Menezes               AMD            Austin, TX




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