Re: Disassembly of 00000

[horseriver <horserivers@gmail.com>]

On Sat, Feb 02, 2013 at 10:37:32AM -0800, Brian Raiter wrote:
> >    I have a question about disassemblly utility .
> >    If I fill an elf's text section with some random data,then 
> >    how does the disas command work for these data?
> >    Is there occasion that several sequence of bytes can not be translated
> >    into legal instructions?
> 
> Yes, definitely. In those cases a typical disassembler will just mark
> the first byte as being literally emitted and try to resume
> disassembly at the next byte. For example, using ndisasm v2.07:
 
  Thanks!
  What is "literally emitted" meaning here? 
  I guess you mean a const value definition.
  How does disassembler check the number of bytes which consist an instruction  ? 
  Can only noe byte tell the instruction's length?
  
> 
> $ echo -e '\017zz' | ndisasm -
> 00000000  0F                db 0x0f
> 00000001  7A7A              jpe 0x7d
> 00000003  0A                db 0x0a
> 
> b
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