Re: [Qemu-devel] [PATCH] target-arm: Tidy up ARM1136 CPUID naming

["Andreas Färber" <andreas.faerber@web.de>]

Am 22.10.2011 12:20, schrieb Peter Maydell:
> On 3 October 2011 11:32, Andreas Färber <andreas.faerber@web.de> wrote:
>> -#define ARM_CPUID_ARM1136     0x4117b363
>> -#define ARM_CPUID_ARM1136_R2  0x4107b362
>> +#define ARM_CPUID_ARM1136_R1P3 0x4117b363
>> +#define ARM_CPUID_ARM1136_R0P2 0x4107b362
> 
> I don't think the patchlevels are important enough to
> memorialise in the constant names. The important
> distinction in behaviour is between the r0 and r1, so
> I think that ARM1136_R0 vs _R1 would be better.

Would you be okay if we do the following?

#define ARM_CPUID_ARM1136_R0 ARM_CPUID_ARM1136_R0P2
#define ARM_CPUID_ARM1136_R1 ARM_CPUID_ARM1136_R1P3

My point is that the number is actually hardcoded in there, whatever we
name the constant. ARM1136 or ARM1136_R0 gives the impression of a more
generic value.

Masking would be the only way to have generic code there and I still
haven't figured out how to do that sensibly without breaking up the
whole switch. For now I have a patch cooking for CPUID preservation that
I'll submit shortly.

Andreas