[PATCH] x86: Add .nop directive to assembler
Mon Feb 19 14:17:00 GMT 2018
On Mon, 19 Feb 2018, Maciej W. Rozycki wrote:
> > OK, except for one quibble with the default md_generate_nops. I think
> > that should error rather than filling with zeros (which is likely to
> > be an illegal instruction or trap).
> I have a feeling the default should wire in HANDLE_ALIGN somehow. For
> many targets, such as fixed instruction width RISC processors, there is
> only going to be one way of filling a given amount of space with no-op
> instructions, so I think there's no point in having code duplication
> here. And even if there are more ways possible for a given target, then
> the `.align' way is still right even if suboptimal.
How would you propose to express "I need three nop
instructions aka 12 bytes from here" with just .align? (Note: no matter
how "here" is currently aligned!)
More information about the Binutils