Lpc2000

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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