Re: [Qemu-devel] [PATCH] correcting ARM CPSR register bit position comment

[Laurent Desnogues]

On Mon, Dec 14, 2009 at 1:07 PM, Paul Brook <address@hidden> wrote:
>> -    uint32_t VF; /* V is the bit 31. All other bits are undefined */
>> +    uint32_t VF; /* V is the bit 28. */
>
> No. The original comment is correct.

And so that the answer is at least a bit useful:  these fields
are not directly mapped to CPSR;  they are the results of
computations and can then be translated to bits in CPSR
(look for cpsr_read/cpsr_write in helper.c).  If you want to
see how VF is set, look for add_cc in op_helper.c.  This is
done this way to speed up simulation.

HTH,

Laurent