Lpc2000

I can't tell you exactly how it is with GNU ARM compiler / assembler.
But in VC under Windows, the C names are expanded with an additional "_" in
Assembler.
e.g.

C Funktion "test" gets "_test" in Assembler.

Alternativly you can use something like

PUBLIC C test

Don't know if this is equal in GNU / ARM environment

Perhaps it helps...

Regards,

         Martin

----- Original Message ----- 
From: "Musharraf Hanif" <musharraf_hanif@...>
To: <lpc2000@yahoogroups.com>
Sent: Saturday, February 21, 2004 9:15 AM
Subject: RE: [lpc2000] Re: Mixing assembly and C...


> What I am really trying to do is to setup vectored IRQs.
>
> I am using assembly interrupt wrappers for ISRs in C. I want to write the
> function for setting up the VIC in C. Hence I need to know the starting
> address of my assembly wrappers in C. If I write the setup code for the
VIC
> in assembly, then there is no problem as I can use the lables.
>
> On a slightly different note, i have a few definitions (.equ) in the
> startup.s file. Is it possible to access their values in C? or if i shift
> these definitions to a .h file (#define), can I use them in assembly?
>
> Are there any other forums are there where I might find people who might
be
> able to help me?
>
> Regards,
>
> Musharraf
>
>
> >From: "entell0" <ediril@...>
> >Reply-To: lpc2000@yahoogroups.com
> >To: lpc2000@yahoogroups.com
> >Subject: [lpc2000] Re: Mixing assembly and C...
> >Date: Sat, 21 Feb 2004 05:02:09 -0000
> >
> >
> >
> >I am not 100% sure about how GNU compiler and assembler handle
> >things, but in general, if you don't mind using global variables,
> >then you can declare them in your C environment and reference them in
> >your assembly code. This will allow you to access these global
> >variables from both worlds.
> >
> >Alternatively, if you are going to use local variables instead of
> >global ones, you can call your assembly routine from your C code and
> >pass the local variables through the function arguments. If you pass
> >the variables by reference, you should be able to modify their values
> >as well which would allow you to copy the values of your labels in
> >the assembly world into these arguments and pass them back to the C
> >world.
> >
> >Lastly, if you are planning to use inline assembly, I am afraid
> >I am not too sure what you can and can't do. You might be able
> >to just put the name of the variable with an underscore in front
> >of it in your inline assembly code and access it that way.
> >
> >Hope this helps a little.
> >
> >
> >Emrah
> >
> >
> >--- In lpc2000@yahoogroups.com, "Musharraf Hanif"
> ><musharraf_hanif@h...> wrote:
> > > Hello all,
> > >
> > > I am using Keil with a GNU compiler in an attempt to develop some
> >code.
> > >
> > > I have been trying to determine some method by which I can obtain
> >the value
> > > of the addresses of some lables (in assembly) to use them in my C
> >code. Can
> > > anyone help me?
> > >
> > > Also, how can I use some constants defined in some c/h file in an
> >assembly
> > > file. Similarly for a reversed situation.
> > >
> > > Any help will be appreciated.
> > >
> > > Regards,
> > >
> > > Musharraf Hanif
> > >
> > > _________________________________________________________________
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