macro on assembler

• Messages sorted by:[ date ][ thread ][ subject ][ author ]

Juergen Suessmaier wrote:
> 
> > It is about macro function in 'asm.h' and 'crt0.s' in newlib
> > package from cygnus. I want to make use of this startup code,
> > but as I assemble it using GAS, it message me an error in all
> > macro function IMM, SYM --> parse error, no function.
> > I suspect that the macros in asm.h using a wrong directives,
> > so that it wouldn't process as macro ...
> > I found in 'asm.h' and 'crt0.s' some C preprocessor directives,
> > like #define, #include, #if ....
> > Hmm ... sounds to me that such kind of directives don't exist in GAS.
> > Can somebody explain me what's wrong???
> 
> GAS doesn't know anything about macros, conditional assembly etc., as
> it was developed only to assemble the stuff that comes out of a
> compiler. If you want to use macros and the like, you'll need to preprocess
> the file with 'gasp' (the GNU assembler preprocessor) and pipe the
> output of gasp into gas:
> 
> gasp <options> <sourcefile> | as <options>
> 
> I hope this helps.

If you name your assembly modules .S instead of .s, GCC will automatically run
them through the preprocessor before assembling them.

-- 
__________________________________
Matthew Majka - Software Engineer
Honeywell Defense Avionics Systems
Albuquerque, New Mexico, USA
________________________________________________
To get help for the crossgcc list, send mail to
crossgcc-request@cygnus.com with the text 'help'
(without the quotes) in the body of the message.