Re: Fwd: binutils in debian unstable is broken.

[Eric Lammerts]

On Wed, 5 Dec 2001, Alan Cox wrote:

> > The problem appears to be that the linker is now actually doing what
> > we asked it to do, so the `remove_foo' entry in that table now points
> > at a function which isn't going to be linked into the kernel.  Oh dear.
>
> The ideal it seems would be for binutils to support passing a stub function
> to use in such cases. That would keep the kernel stuff working nicely and
> allow us to do panic("__exit code called"); if anyone actually did manage
> to call one.

We can get a panic() call (and remove the ugly #ifdef's) with
something like this:

in some .h file:

#ifdef DEVEXIT_LINKED
#define DEVEXIT_FUNC(a) (a)
#else
void panic_exit_code();
#define DEVEXIT_FUNC(a) ((typeof((a)) *)panic_exit_code)
#endif

in some .c file:

#ifndef DEVEXIT_LINKED
void panic_exit_code()
{
   panic("__exit code called");
}
#endif

change the drivers like this:

#ifdef DEVEXIT_LINKED
     remove:         firestream_remove_one,
#endif

to this:

     remove:         DEVEXIT_FUNC(firestream_remove_one),

Eric