On 25/10/11 15:16, Richard Earnshaw wrote:
The difficulty on R profile is that although BE-32 mode is obsolete,
there is a config bit that can be set to make the CPU byte-swap the
instruction stream to make it behave largely like it is running in BE-32
mode.
I think really we should be pushing the R-profile code towards having
BE-8 as the default; but to do that we really need a compiler option
that can override this behaviour (probably -mbe-[8|32]). Once we have
that option, we can fix the compiler to prefer BE-8 as there is then a
way to get back the legacy behaviour.
Here's an updated patch that makes no generalizations.
OK?
Andrew
2011-10-26 Andrew Stubbs <a...@codesourcery.com>
gcc/
* config/arm/bpabi.h (BE8_LINK_SPEC): Recognize generic-armv7 tuning.
--- a/gcc/config/arm/bpabi.h
+++ b/gcc/config/arm/bpabi.h
@@ -58,6 +58,7 @@
#define BE8_LINK_SPEC \
" %{mbig-endian:%{march=armv7-a|mcpu=cortex-a5 \
|mcpu=cortex-a8|mcpu=cortex-a9|mcpu=cortex-a15 \
+ |mcpu=generic-armv7-a \
|march=armv7-m|mcpu=cortex-m3 \
|march=armv7e-m|mcpu=cortex-m4 \
|march=armv6-m|mcpu=cortex-m0 \