gcc, floating point and linux kernel module

[Michel Dänzer]

christophe barbe wrote:

> I'm compiling a kernel module for the linux 2.2.18 on a PPC target (MPC750)
> with the following gcc :
> gcc version egcs-2.91.66 19990314 (egcs-1.1.2 release)
>
> The resulting object uses FPU opcode to do optimization for 64 bits
> variables. I've add at the end of this mail the command line to compile one
> of the object included in the module which uses FPU, the guilty part of the
> code and the generated asm.
>
> It's a bad thing to use FPU in the kernel mode (under linux), so my question
> is is there a way to turn of FPU usage ?

arch/ppc/Makefile uses -msoft-float.


Michel


--
Earthling Michel Dänzer (MrCooper)  \  CS student and free software enthusiast
Debian GNU/Linux (powerpc,i386) user \   member of XFree86 and The DRI Project

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