New .nops directive, to aid Linux alternatives patching?

Maciej W. Rozycki macro@mips.com
Mon Feb 12 16:01:00 GMT 2018


On Mon, 12 Feb 2018, H.J. Lu wrote:

> My implementation uses the existing relaxation frame work.
> When we are processing .nop, we don't know exactly how big the
> the NOP size will be.  We allocate a frag with the maximum size
> and set the exact size after relaxation.  After relaxation is done,
> all frags are converted to rs_fill.  We can add rs_fill_nop to
> support arbitrary .nop directive size. But I don't know if it is
> necessary.

 Right, so this is needed for argument expressions using forward 
references.  Understood and accepted.  Thank your for patience.

  Maciej



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