Messages in this thread | | | Date | Tue, 21 Jan 2003 01:26:29 -0800 | From | george anzinger <> | Subject | Re: problem using integer division in kernel modules |
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Matti Aarnio wrote: > > On Wed, Jan 15, 2003 at 07:41:29PM +0100, Thomas Schlichter wrote: > > Hi, > > > > I am writing at a small kernel module and have a problem now using / and %. If > > I do so I get following unresolved symbols when the module should be loaded: > > __divdi3 > > __moddi3 > > 64-bit division with non-constant non-power-of-two divider. > > > Could you please help me and tell me what I do wrong..? > > The kernel is linked without gcc builtin libraries. > Reasons can be found from FAQ (see footer), or archives.
You may want to check out .../include/asm-???/div64.h. It allows some limited divides with 64-bit numbers. Look at several so you understand what it does and does not do.
-g > > /Matti Aarnio > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
-- George Anzinger george@mvista.com High-res-timers: http://sourceforge.net/projects/high-res-timers/ Preemption patch: http://www.kernel.org/pub/linux/kernel/people/rml - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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