From: Hans-Peter Nilsson h...@axis.com
Date: Fri, 22 Jun 2012 04:24:01 +0200
From: Hans-Peter Nilsson h...@axis.com
Date: Fri, 15 Jun 2012 04:07:23 +0200
A ping.
And another ping, now CCing ARM maintainers,
http://gcc.gnu.org/ml/gcc-patches/2012-06/msg00983.html.
Y is 28 for introduction of the quoted code in
arch/arm/mm/alignment.c, AFAICT, so how about this one, ok now?
Index: changes.html
===
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.7/changes.html,v
retrieving revision 1.113
diff -p -u -r1.113 changes.html
--- changes.html5 Jun 2012 11:03:53 - 1.113
+++ changes.html15 Jun 2012 02:04:46 -
@@ -43,6 +43,19 @@
/li
+liOn ARM, when compiling for ARMv6 (but not ARMv6-M), ARMv7-A,
+ARMv7-R, or ARMv7-M, the new option
+code-munaligned-access/code is active by default, which for
+some source codes generates code that accesses memory on unaligned
+adresses. This will require the kernel of those systems to enable
+such accesses (controlled by CP15 register codec1/code, refer
+to ARM documentation). Alternatively or for compatibility with
+kernels where unaligned accesses are not supported, all code has
+to be compiled with code-mno-unaligned-access/code.
+Linux/ARM in official releases has automatically and
+unconditionally supported unaligned accesses as emitted by GCC due
+to this option being active since Linux version 2.6.28./li
+
liSupport on ARM for the legacy floating-point accelerator (FPA) and
the mixed-endian floating-point format that it used has been obsoleted.
The ports that still use this format have been obsoleted as well.
