Re: Unresolved symbol __multi3

>>>>> On 14 Aug 2002 13:58:35 -0400, Jim Wilson <[email protected]> said:

  Jim> libgcc is not used by the kernel.  There are various problems
  Jim> with linking libgcc with the kernel.  I am not a kernel hacker,
  Jim> so I can't really explain them.  If the kernel really needs a
  Jim> multi3 function, then you add one to the kernel.  There is a
  Jim> place in the kernel for support functions like this.  I don't
  Jim> have a copy of the kernel sources handy, and don't remember
  Jim> offhand where the functions are put.

For one thing, the register usage conventions are different inside
the kernel, so you can't just use the libgcc version.

>From Jim's explanation, it sounds like the module needs to be fixed
not to do dynamically-sized array (if you want to do that explicitly,
you can use alloca instead, but beware of overflowing the kernel
stack) or the alternative is to use gcc3.1.

I don't want to add divti3 in the kernel for no good reason (and a
broken compiler/module is not a good reason).

	--david