Messages in this thread | | | Date | Thu, 13 Aug 2009 07:07:00 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 4/6] Add support for LZO-compressed kernels for ARM |
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On 08/13/2009 02:30 AM, Albin Tonnerre wrote: > On Tue, Aug 11, 2009 at 09:31:25AM -0700, H. Peter Anvin wrote : >> On 08/11/2009 09:27 AM, Albin Tonnerre wrote: >>> So I guess the only options left are either define a dummy raise() function, or >>> get rid of the divisions like Alain Knaff did in his patch ? >>> >> Define a dummy raise, get rid of the divisions, or provide your own >> division function (there is probably one in the kernel already...) > > Yes, there's such a function in arch/arm/lib/lib1funcs.S, which in turns > requires the __div0 symbol, defined in arch/arm/kernel/traps.c, and this one > cannot be used as it brings plenty of symbols that aren't available in the > pre-boot environment. So anyway, we have to define our own symbols there. Either > we use libgcc and define raise(), or lib1funcs and define __div0(). >
I would go with the variant in the kernel, as being a known quantity.
Your __div0 function can just loop forever.
-hpa
-- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.
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