Re: [Nasm-devel] HINT_NOP17

[H. P. A. <hp...@zy...>]

On 11/30/2013 05:02 PM, Song, Jin Kyu wrote:
> Hello,
> 
> I found bndldx and hint_nop17 sharing the same opcode (OF 1A). And, of course, ndisasm picks either one depending on the iflags now.
> 
> BNDLDX      bndreg,mem128  [rm:    0f 1a /r] MPX,MIB,FUTURE
> HINT_NOP17	rm32           [m: o32 0f 1a /1] P6,UNDOC
> 
> So is '[OF 1A /1] with a rm operand' still a nop? Shall I remove this NOP instruction or raise the priority of UNDOC iflag to let ndisasm know this is not preferred?
> 

Oh, right.  We really need to mask off the irrelevant flags (anything
but the vendor), otherwise the disassembler will do the wrong thing.

The HINT_NOPs really should be last priority, which is why they are at
the end of the file.

	-hpa