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Programming > Assembly x86 > Re: NDISASM: do...
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Re: NDISASM: doesn't recognize all Mod/RM extension opcodes?

by "Wolfgang Kern" <spamtrap@[EMAIL PROTECTED] > Apr 24, 2008 at 09:41 PM

Alexei A. Frounze asked about CODE 0x82:

this opcope where never defined nor declared as valid in any older
CPU-manual, but it was known to work like CODE 0x80 on most CPU's.

With AMD-64 many of this 'undo***ented', 'but known' instructions
become either obsolete, illegal or even may have got a new meaning.

Sure, not all tools around were able to cover this in time and
may still re****t an (yet) anchient disassembled interpretation,
while other tools never implied 'undo***ented' instructions.
But I'd see a DB 82h followed by an obvious wrong line as a major
bug in a disassembling tool.

__
wolfgang
 




 9 Posts in Topic:
NDISASM: doesn't recognize all Mod/RM extension opcodes?
"Alexei A. Frounze&q  2008-04-24 05:19:57 
Re: NDISASM: doesn't recognize all Mod/RM extension opcodes?
"Wolfgang Kern"  2008-04-24 21:41:08 
Re: NDISASM: doesn't recognize all Mod/RM extension opcodes?
"Rod Pemberton"  2008-04-25 03:45:46 
Re: NDISASM: doesn't recognize all Mod/RM extension opcodes?
Frank Kotler <spamtra  2008-04-25 18:07:13 
Re: NDISASM: doesn't recognize all Mod/RM extension opcodes?
Robert Redelmeier <red  2008-04-25 18:39:57 
Re: NDISASM: doesn't recognize all Mod/RM extension opcodes?
Frank Kotler <spamtra  2008-04-25 19:29:23 
Re: NDISASM: doesn't recognize all Mod/RM extension opcodes?
Robert Redelmeier <red  2008-04-25 20:49:05 
Re: NDISASM: doesn't recognize all Mod/RM extension opcodes?
Frank Kotler <spamtra  2008-04-25 21:58:42 
Re: NDISASM: doesn't recognize all Mod/RM extension opcodes?
Chuck Crayne <spamtra  2008-04-25 16:05:15 

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