On Thu, Nov 19, 2015 at 10:03:13AM +0000, Suzuki K. Poulose wrote:
On 19/11/15 04:57, AKASHI Takahiro wrote:
a) A precise value (number of breakpoint registers) or a value from
which you derive some precise value. You mentioned these above
b) Fields defining the presence of a feature (1, 2, 3). These would
always be positive since the absence of such feature would mean a
value of 0
c) Fields defining the absence of a feature by setting 0xf. These are
usually fields that were initial RAZ and turned to -1. I don't expect
such field be greater than 0, nor smaller than -1.
So I think we can treat (a) and (b) as unsigned permanently.
We could treat (c) as unsigned as well with a value of 0xf though I'm not sure
how it matches your LOWER/HIGHER_SAFE definitions.