Re: [Xen-devel] NPTL/TLS segment flipping code problem

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

> >Your analysis of these opcodes (A1 and A3) is correct, but both have
> >code 'O|4' in the insn_decode table, so they don't go thru 'case 1:'.
> 
> >
> >A0 and A2 have code 'O|1' which are instructions:
> > MOV moffs8,AL   ;   MOV AL,moffs8
> >These have a single-byte offset incoded within the instruction.
> >The 'case 1:' *is* needed for A0 and A2.
> 
> Hmm, I'm sorry, I actually meant A0 and A2. Just look at what the
> assembler generates for 
> 
>       movb    symbol, %al
>       movb    %al, symbol

Oops. Sorry - yes, you win. :-)

I'll get rid of 'case 1'.

 -- Keir


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