GNU as -- selevtively/dynamically disabling macro expansion

[nick clifton]

Hi Jagged,

   Sorry for taking so long to reply to your email.  I have been very 
busy doing other things for the last few months.

> I tried to address the maintainer mentioned in the as info pages as well
> as the contributor of the listing capability, as given in the respective
> source files.

The maintainer details in the gas documentation are very out of date 
(and something that I need to fix).  The best place to look for 
maintainer information is the file binutils/MAINTAINERS in the binutils 
source code.


> So, the essence of my question is: where does the code decide whether or not
> to actually expand a macro, or (this would be sufficient too) where is it
> decided to emit the macro expansion to the listing file?

The code in gas/read.c:read_a_source_file () is responsible for deciding 
whether a macro expansion should appear in the listing.


>    - if I use ".nolist" at the beginning of any one macro to suppress
>      further listing of its expansion, it does not work;
>    - if I use ".list" at the end of the respective macro, it does not
>      reestablish the state as it was before the ".nolist" at the very
>      beginning of the same macro.

> This is not what I call to "maintain an internal counter", as quoted above.
> There is a (non-static)

Agreed - this is a bug.  The implementation should match the 
documentation.  if you would like to file a bug report on this (here: 
http://sourceware.org/bugzilla) that would help.

Cheers
   Nick