arm assembly syntax incompatible

arm assembly syntax incompatible

[Alu Minium]

I am trying to cross-assemble (host=solaris,
target=arm-elf) some assembly lang files which
came from ARM.  When I do, I get lots of errors. 
arm-elf-as does not like the syntax of the
files.  For example the file contains ";" as a
comment marker, but arm-elf-as attempts to
process the line as an instruction.  The file has
"include" statements that look like this:

    INCLUDE arm.equ

arm-elf-as says "INCLUDE" is a "bad instruction".

Since the files came from ARM they must (?) be
using ARM-native syntax.  

What's up?  How do I get the GNU assembler to
correctly read this syntax?

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Re: arm assembly syntax incompatible

[Richard Earnshaw]

> I am trying to cross-assemble (host=solaris,
> target=arm-elf) some assembly lang files which
> came from ARM.  When I do, I get lots of errors. 
> arm-elf-as does not like the syntax of the
> files.  For example the file contains ";" as a
> comment marker, but arm-elf-as attempts to
> process the line as an instruction.  The file has
> "include" statements that look like this:
> 
>     INCLUDE arm.equ
> 
> arm-elf-as says "INCLUDE" is a "bad instruction".
> 
> Since the files came from ARM they must (?) be
> using ARM-native syntax.  
> 
> What's up?  How do I get the GNU assembler to
> correctly read this syntax?

You can't -- you will have to translate it by hand.  GAS uses a 
'traditional UNIX' syntax.  Though I say it myself, for historical reasons 
the ARM assembler uses a very strange and non-standard syntax.

I don't ever expect the two to be compatible.

Richard.

Re: arm assembly syntax incompatible

[Philip Blundell]

>Since the files came from ARM they must (?) be
>using ARM-native syntax.  
>
>What's up?  How do I get the GNU assembler to
>correctly read this syntax?

You can't.  GNU as doesn't understand the ADS syntax.

p.

Re: arm assembly syntax incompatible

[Lewin A.R.W. Edwards]

>I am trying to cross-assemble (host=solaris,
>target=arm-elf) some assembly lang files which
>came from ARM.  When I do, I get lots of errors.
>arm-elf-as does not like the syntax of the
>
>arm-elf-as says "INCLUDE" is a "bad instruction".
>
>Since the files came from ARM they must (?) be
>using ARM-native syntax.

ARM standardizes the mnemonics and sets conventions about numeric base 
prefixes and so forth. Even if individual assembler vendors follow ARM's 
conventions on such things as address representation, those individual 
vendors are free to implement pseudo-ops and assembler directives however 
they see fit.

Translating from ARM's syntax to gas's isn't terribly difficult (even if 
you don't know ARM's syntax rules); it just takes time.


-- Lewin A.R.W. Edwards
Embedded Engineer, Digi-Frame Inc.
Work: http://www.digi-frame.com/
Tel (914) 937-4090 9am-6:30pm M-F ET
Personal: http://www.larwe.com/ http://www.zws.com/

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