29 Feb
2012
29 Feb
'12
9:56 a.m.
On Wed, 2012-02-29 at 09:34 +0000, Dave Martin wrote:
On Tue, Feb 28, 2012 at 12:28:29PM +0000, Stefano Stabellini wrote:
I don't have a very strong opinion on which register we should use, but I would like to avoid r7 if it is already actively used by gcc.
But there is no framepointer for Thumb-2 code (?)
Peter Maydell suggested there was:
r7 is (used by gcc as) the Thumb frame pointer; I don't know if this makes it worth avoiding in this context.
Sounds like it might be a gcc-ism, possibly a non-default option?
Anyway, I think r12 will be fine for our purposes so the point is rather moot.
Ian.