Assembling with GNU and ADS

Hi,

I want to be able to build my project with both the ARM ADS and GNU
tools. This is relatively easy for the C files, however, it is proving
very difficult (actually impossible) to do this for assembly files.
Anyone know of a clever trick (pre-processor?) that allows me to
maintain a single assembly source file and assemble it with either GNU
GAS or ADS ?

TIA, HG

On 30 Jun 2004 04:32:52 -0700, armarm123@hotmail.com (HG) wrote:

>Hi,
>
>I want to be able to build my project with both the ARM ADS and GNU
>tools. This is relatively easy for the C files, however, it is proving
>very difficult (actually impossible) to do this for assembly files.
>Anyone know of a clever trick (pre-processor?) that allows me to
>maintain a single assembly source file and assemble it with either GNU
>GAS or ADS ?

For our kernel I use a combination of C-Preprocessor and perl.
I.e. I have one source that I pre-process to get ADS,IAR and GNU
assembly.

This works fine (I do this for various CPUs).

-- 
42Bastian
Do not email to bastian42@yahoo.com, it's a spam-only account :-)
Use <same-name>@epost.de instead !

bastian42@yahoo.com (42Bastian Schick) wrote in message news:<40e2bf41.1563945905@news.individual.de>...
> On 30 Jun 2004 04:32:52 -0700, armarm123@hotmail.com (HG) wrote:
> 
> >Hi,
> >
> >I want to be able to build my project with both the ARM ADS and GNU
> >tools. This is relatively easy for the C files, however, it is proving
> >very difficult (actually impossible) to do this for assembly files.
> >Anyone know of a clever trick (pre-processor?) that allows me to
> >maintain a single assembly source file and assemble it with either GNU
> >GAS or ADS ?
> 
> For our kernel I use a combination of C-Preprocessor and perl.
> I.e. I have one source that I pre-process to get ADS,IAR and GNU
> assembly.
> 
> This works fine (I do this for various CPUs).
Any chance of an example of what you mean ?

TIA, HG

armarm123@hotmail.com (HG) wrote in
news:47822c89.0407010712.65d5c77@posting.google.com: 

> bastian42@yahoo.com (42Bastian Schick) wrote in message
> news:<40e2bf41.1563945905@news.individual.de>... 
>> On 30 Jun 2004 04:32:52 -0700, armarm123@hotmail.com (HG) wrote:
>> 
>> >Hi,
>> >
>> >I want to be able to build my project with both the ARM ADS and GNU
>> >tools. This is relatively easy for the C files, however, it is
>> >proving very difficult (actually impossible) to do this for assembly
>> >files. Anyone know of a clever trick (pre-processor?) that allows me
>> >to maintain a single assembly source file and assemble it with
>> >either GNU GAS or ADS ?
>> 
>> For our kernel I use a combination of C-Preprocessor and perl.
>> I.e. I have one source that I pre-process to get ADS,IAR and GNU
>> assembly.
>> 
>> This works fine (I do this for various CPUs).
> Any chance of an example of what you mean ?
> 
> TIA, HG
> 

This is a total hack and probably most offensive to perl experts, but 
worked for me where I had to take a GAS file and assemble it using ADS:

while (<>)
{
    s/@/ ;@/;
    s/^(\w+):/$1/;
    s/\.section.*/ AREA |x|,code,readonly/;
    s/\.equ ([^\s]+),\s+([^\s]+)/$1 equ $2/;
    s/\.global\s+([^\s]+)/ EXPORT $1/;
    
    print ;
}
print "\n END\n";

Obviously you'll have to extend it to cover GAS keywords that weren't in 
the code I was assembling. Just pipe the GAS file through the perl to get 
ADS compatible code...

Peter.

On 1 Jul 2004 08:12:59 -0700, armarm123@hotmail.com (HG) wrote:

>bastian42@yahoo.com (42Bastian Schick) wrote in message news:<40e2bf41.1563945905@news.individual.de>...
>> On 30 Jun 2004 04:32:52 -0700, armarm123@hotmail.com (HG) wrote:
>> 
>> >Hi,
>> >
>> >I want to be able to build my project with both the ARM ADS and GNU
>> >tools. This is relatively easy for the C files, however, it is proving
>> >very difficult (actually impossible) to do this for assembly files.
>> >Anyone know of a clever trick (pre-processor?) that allows me to
>> >maintain a single assembly source file and assemble it with either GNU
>> >GAS or ADS ?
>> 
>> For our kernel I use a combination of C-Preprocessor and perl.
>> I.e. I have one source that I pre-process to get ADS,IAR and GNU
>> assembly.
>> 
>> This works fine (I do this for various CPUs).
>Any chance of an example of what you mean ?


In my source I have:
#define ARM 1
#define GNU 2

#if COMPILER == ARM

	MACRO
	SC_FUNC32 $name
	CODE32
	EXPORT $name
$name
	MEND

#define LONG DCD
#endif
#if COMPILER == GNU
	.macro SC_FUNC32 name
	.code 32
	.type \name,function
\name:
	.endm

#define LONG .long
#endif

Inside the source I only use macros for things that are specific to an
assembler.

Two produce the actual files I'll pre-process the original source
gcc -E -DCOMPILER=1 source.S >source_ads.s
or
gcc -E -DCOMPILER=2 source.S >source_gnu.S

Net effect: Comments are stripped if written as C comments.

After the above state you might use a simple C program or perl script
to remove empty lines.


-- 
42Bastian
Do not email to bastian42@yahoo.com, it's a spam-only account :-)
Use <same-name>@epost.de instead !