[PATCH 16/18] powerpc: Fix endianness issues in alignment handler

Ian Munsie
2010-10-01T07:06:37Z

From: Ian Munsie <imunsie@au1.ibm.com>

This patch reverses the order of the high and low bits in the alignment
handler on little endian, which should be enough to fix any alignment
exceptions.

Please note that this patch is largely untested.

Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
---
arch/powerpc/kernel/align.c | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c
index 8184ee9..fc357c6 100644
--- a/arch/powerpc/kernel/align.c
+++ b/arch/powerpc/kernel/align.c
@@ -712,12 +712,22 @@ int fix_alignment(struct pt_regs *regs)
double dd;
unsigned char v[8];
struct {
+#ifdef __LITTLE_ENDIAN__
+ int low32;
+ unsigned hi32;
+#else
unsigned hi32;
int low32;
+#endif
} x32;
struct {
+#ifdef __LITTLE_ENDIAN__
+ short low16;
+ unsigned char hi48[6];
+#else
unsigned char hi48[6];
short low16;
+#endif
} x16;
} data;

--
1.7.1