[bugs] [illumos gate - Feature #1096] i386 disassembler should understand complex nops

[illumos bugs]

Issue #1096 has been updated by Rich Lowe.

Assignee set to Rich Lowe
% Done changed from 0 to 60

Actually, these are just regular multibyte nops, not the "hinting nops" to which intel refer (which are, as stated, the reserved opcodes in a given range).

I have tentative changes for this on my GCC branch.
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Feature #1096: i386 disassembler should understand complex nops
https://www.illumos.org/issues/1096

Author: Rich Lowe
Status: New
Priority: Normal
Assignee: Rich Lowe
Category: lib - userland libraries
Target version: 
Difficulty: Medium
Tags: 


I have some code which contains some of the weirder amd64 nop instructions (specifically, nopl, a nop with an argument).  libdisasm appears to have no knowledge of this, mdb spits out:
  ***ERROR--unknown op code***

dis trips on it completely, and fails to disassemble from that point onward.


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