[PATCH 1/5] Fix alignment trap triggered by NEON instructions

[David Oberhollenzer]

From: Yuanjie Huang <Yuanjie.Huang at windriver.com>

NEON instruction VLD1.64 was used to copy 64 bits data after type
casting, and they will trigger alignment trap.
This patch uses memcpy to avoid alignment problem.

Signed-off-by: Yuanjie Huang <Yuanjie.Huang at windriver.com>
Signed-off-by: David Oberhollenzer <david.oberhollenzer at sigma-star.at>
---
 ubifs-utils/mkfs.ubifs/key.h | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/ubifs-utils/mkfs.ubifs/key.h b/ubifs-utils/mkfs.ubifs/key.h
index 39379fd..118858b 100644
--- a/ubifs-utils/mkfs.ubifs/key.h
+++ b/ubifs-utils/mkfs.ubifs/key.h
@@ -159,10 +159,12 @@ static inline void data_key_init(union ubifs_key *key, ino_t inum,
  */
 static inline void key_write(const union ubifs_key *from, void *to)
 {
-	union ubifs_key *t = to;
+	__le32 x[2];
 
-	t->j32[0] = cpu_to_le32(from->u32[0]);
-	t->j32[1] = cpu_to_le32(from->u32[1]);
+	x[0] = cpu_to_le32(from->u32[0]);
+	x[1] = cpu_to_le32(from->u32[1]);
+
+	memcpy(to, &x, 8);
 	memset(to + 8, 0, UBIFS_MAX_KEY_LEN - 8);
 }
 
@@ -174,10 +176,12 @@ static inline void key_write(const union ubifs_key *from, void *to)
  */
 static inline void key_write_idx(const union ubifs_key *from, void *to)
 {
-	union ubifs_key *t = to;
+	__le32 x[2];
+
+	x[0] = cpu_to_le32(from->u32[0]);
+	x[1] = cpu_to_le32(from->u32[1]);
 
-	t->j32[0] = cpu_to_le32(from->u32[0]);
-	t->j32[1] = cpu_to_le32(from->u32[1]);
+	memcpy(to, &x, 8);
 }
 
 /**
-- 
2.10.2