+++ /dev/null
-From 4fd16633a8c379971425f7fd482152f163b09158 Mon Sep 17 00:00:00 2001
-From: Paul Burton <Paul.Burton@imgtec.com>
-Date: Fri, 17 Sep 2010 14:08:57 +0100
-Subject: [PATCH] Endianness macros should not dereference unaligned pointers
-
-The LE_*/BE_* macros previously worked by casting the pointer passed to them to a pointer to the correct integer type, then dereferencing it. This will not work on architectures which don't allow unaligned data access. Instead, access one byte at a time and shift to form the value.
----
- src/bswap.h | 59 +++++++++++++++++++++++++++++++++++++++++++----------------
- 1 files changed, 43 insertions(+), 16 deletions(-)
-
-diff --git a/src/bswap.h b/src/bswap.h
-index b731da7..59e8716 100644
---- a/src/bswap.h
-+++ b/src/bswap.h
-@@ -21,23 +21,50 @@
- */
-
-
--/* Go cheap now, will rip out glib later. *Sigh* */
--#include <glib.h>
--
--/* NOTE:
-- * Now, to clear up confusion: LE_XX means "from LE to native, XX bits wide"
-- * I know it's not very clear naming (tell me about it, I
-- * misinterpreted in first version and caused bad nasty bug, *sigh*),
-- * but that's inherited code, will clean up as things go
-- * Oh, and one more thing -- they take *pointers*, not actual ints
-- */
-+#include <stdint.h>
-+
-+#define SWAP_ENDIAN_16(val) \
-+ (val[1] | (val[0] << 8))
-+#define SWAP_ENDIAN_32(val) \
-+ (val[3] | (val[2] << 8) | (val[1] << 16) | (val[0] << 24))
-+#define SWAP_ENDIAN_64(val) \
-+ (val[7] | (val[6] << 8) | (val[5] << 16) | (val[4] << 24) | \
-+ ((uint64_t)val[3] << 32) | ((uint64_t)val[2] << 40) | \
-+ ((uint64_t)val[1] << 48) | ((uint64_t)val[0] << 56))
-+
-+#define SAME_ENDIAN_16(val) \
-+ (val[0] | (val[1] << 8))
-+#define SAME_ENDIAN_32(val) \
-+ (val[0] | (val[1] << 8) | (val[2] << 16) | (val[3] << 24))
-+#define SAME_ENDIAN_64(val) \
-+ (val[0] | (val[1] << 8) | (val[2] << 16) | (val[3] << 24) | \
-+ ((uint64_t)val[4] << 32) | ((uint64_t)val[5] << 40) | \
-+ ((uint64_t)val[6] << 48) | ((uint64_t)val[7] << 56))
-+
-+#ifndef WORDS_BIGENDIAN
-+
-+/* Little endian */
-+
-+#define LE_16(val) SAME_ENDIAN_16(((uint8_t *)(val)))
-+#define LE_32(val) SAME_ENDIAN_32(((uint8_t *)(val)))
-+#define LE_64(val) SAME_ENDIAN_64(((uint8_t *)(val)))
-+#define BE_16(val) SWAP_ENDIAN_16(((uint8_t *)(val)))
-+#define BE_32(val) SWAP_ENDIAN_32(((uint8_t *)(val)))
-+#define BE_64(val) SWAP_ENDIAN_64(((uint8_t *)(val)))
-+
-+#elif WORDS_BIGENDIAN == 1
-+
-+/* Big endian */
-
--#define LE_16(val) (GINT16_FROM_LE (*((u_int16_t*)(val))))
--#define BE_16(val) (GINT16_FROM_BE (*((u_int16_t*)(val))))
--#define LE_32(val) (GINT32_FROM_LE (*((u_int32_t*)(val))))
--#define BE_32(val) (GINT32_FROM_BE (*((u_int32_t*)(val))))
-+#define LE_16(val) SWAP_ENDIAN_16(((uint8_t *)(val)))
-+#define LE_32(val) SWAP_ENDIAN_32(((uint8_t *)(val)))
-+#define LE_64(val) SWAP_ENDIAN_64(((uint8_t *)(val)))
-+#define BE_16(val) SAME_ENDIAN_16(((uint8_t *)(val)))
-+#define BE_32(val) SAME_ENDIAN_32(((uint8_t *)(val)))
-+#define BE_64(val) SAME_ENDIAN_64(((uint8_t *)(val)))
-
--#define LE_64(val) (GINT64_FROM_LE (*((u_int64_t*)(val))))
--#define BE_64(val) (GINT64_FROM_BE (*((u_int64_t*)(val))))
-+#else
-+#error Unknown endianness!
-+#endif
-
- #endif /* BSWAP_H_INCLUDED */
---
-1.7.2.2
-