Albert ARIBAUD <albert.u.b...@aribaud.net> writes: > Hi Tom, > > On Mon, 10 Feb 2014 08:21:39 -0500, Tom Rini <tr...@ti.com> wrote: > >> On Mon, Feb 10, 2014 at 10:24:47AM +0100, Albert ARIBAUD wrote: >> > Hi Tom, >> > >> > On Tue, 4 Feb 2014 12:05:33 -0500, Tom Rini <tr...@ti.com> wrote: >> > >> > > When we tell the compiler to optimize for ARMv7 it assumes a default of >> > > unaligned accesses being supported at the hardware level and can make >> > > use of this to perform what it deems as an optimization in any case, >> > > including allowing for data to become unaligned. We explicitly disallow >> > > this hardware feature so we must tell the compiler. >> > > >> > > Cc: Albert ARIBAUD <albert.u.b...@aribaud.net> >> > > Cc: Mans Rullgard <m...@mansr.com> >> > > Signed-off-by: Tom Rini <tr...@ti.com> >> > >> > NAK -- the discrepancy between the compiler being told to allow native >> > unaligned accesses while at the same time telling the hardware to trap >> > them is conscious and voluntary. It was chosen to help detect unaligned >> > accesses which are rarely necessary and can be explicitly performed by >> > software on a case by case basis. >> > >> > If and when a specific file requires unaligned access which cannot be >> > made by some other mean than enabling -mno-unaligned-access, then this >> > file should have it added, not the whole of U-Boot. >> >> Right, I recall the discussion, and we chose wrong. > > I am quite prepared to discuss whether we chose wrong or right, and > to change my mind when the conditions are right, but I'll need more than > such a short and simple statement. :)
I already gave you a detailed explanation some months ago. You refused to read it. -- Måns Rullgård m...@mansr.com _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot