[ixp1200] using addresses of labels

[Cyrus Hall]

Arthur-

Thanks, that does exactly what I need.  I unfortunately missed it the
first couple times through the ISA.

Cyrus

On Wed, 2003-05-14 at 01:33, Arthur Berkovitch wrote:
> Hi Cyrus,
> Use the JUMP instruction:
> 
> jump[register, label#], targets [label1, label2, ...labeln], optional_token
> 
> Also, you may find the .func_table directive useful for your needs.
> If wanted, you can export the labels addresses to core applications with the
> .export_func directive.
> take care,
> Arthur
> 
> -----Original Message-----
> From: Cyrus Hall [mailto:hallcp at cs.colorado.edu]
> Sent: Wednesday, May 14, 2003 1:28 AM
> To: ixp1200 List
> Subject: [ixp1200] using addresses of labels
> 
> 
> Hi there all-
> 
> I'm currently trying to build a table of address to parts of a filter
> I've written.  IE, you have a value, index into the table, and jump to
> the associated address in code.  The jumping is simple enough, save the
> PC and replace it, give up control, and wait for the ctx switch back
> in.  Not hyper efficient, but not bad when you're only filter one or two
> fields.   Returning is simple enough as well.
> 
> The problem I'm having is actually get the address of code.  This
> clearly needs to be done at compile time (there doesn't appear to be a
> linker involved in loading code onto the ME's), and would seem to be as
> simple as replacing the symbolic label with it's final address.  Yet,
> there seems to be no way to do something like:
> 
> immed32[var, label#:]
> 
> Has anyone done anything like this and\or know how?
> 
> Thanks,
> Cyrus