Ralf Baechle wrote:
> On Tue, Feb 27, 2007 at 05:38:41PM +0000, Thiemo Seufer wrote:
>
> > Something like
> >
> > #if LOADADDR == 0xffffffff80000000
> > .fill 0x400
> > #endif
> >
> > but by defining an appropriate name in arch/mips/Makefile instead of
> > externalizing the load-y/LOADADDR there.
>
> Basically a good idea but it will fail for 64-bit kernels so the test
> would need to be extended to cover XKPHYS as well. Also R2 processors
> which have the c0_ebase registers do no need to reserve space for
> exception handlers as they can easily move them elsewhere.
>
> Ralf
Hi Ralf,
From your description it sounds like not all R2 CPUs have c0_ebase registers?
I don't know how to check for c0_ebase from the pre-processor, the test below
assumes they all do.
How about something like:
#if (defined(CONFIG_SYS_HAS_CPU_MIPS32_R1) && \
VMLINUX_LOAD_ADDRESS == CKSEG0) || \
((defined(CONFIG_SYS_HAS_CPU_MIPS64_R1) || defined(CONFIG_SYS_HAS_CPU_MIPS64_R2)) && \
VMLINUX_LOAD_ADDRESS == XKPHYS)
.fill 0x400
#endif
Marc
