MSR bits in irq_asm.S
Sebastian Huber
sebastian.huber at embedded-brains.de
Wed Jan 13 13:13:40 UTC 2010
Hi,
on PowerPC the file irq_asm.S is obsolete. Please have a look at
c/src/lib/libcpu/powerpc/new-exceptions/bspsupport
for the latest exception handling code.
CU
Leon Pollak wrote:
> Hello, all.
>
> I passed through all PPC irq_asm.S files and seems to see the same picture:
> while exiting the IRQ state assembler code "restores" the MSR value ALWAYS in
> the constant way - without taking into account whether caches are on or off.
>
> Well, this is OK for some specific BSP, which initializes its cache states
> (although I should do this different).
> But this method is used in ../shared/irq_asm.S too.
>
> This makes me to thing, that I misunderstand something.
>
> Thanks for clarification...:-)
--
Sebastian Huber, embedded brains GmbH
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