On Saturday 19 August 2006 00:40, Igor Kovalenko wrote:
> Hi!
>
> This patch adds handling of multi-byte NOPs, recent gcc/gas uses them for
> x86 code padding.
> Patch checked with current opensuse-factory x86 guest installation which is
> built with new gcc/gas tools.

According to my amd64 documentation all of the opcodes 0f 19 through 0f 1f 
should be implemented as a NOP. Also, I suspect the "invalid" prefetch ops 
(0f 18) should also be implemented as nops.
The same implementation should be useable to all these opcodes.

Paul


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