1 files changed, 37 insertions, 5 deletions

diff --git a/include/asm-x86/unaligned.h b/include/asm-x86/unaligned.h
index 68067150fbcb..913598d4f761 100644
--- a/include/asm-x86/unaligned.h
+++ b/include/asm-x86/unaligned.h
@@ -1,5 +1,37 @@
-#ifdef CONFIG_X86_32
-# include "unaligned_32.h"
-#else
-# include "unaligned_64.h"
-#endif
+#ifndef _ASM_X86_UNALIGNED_H
+#define _ASM_X86_UNALIGNED_H
+
+/*
+ * The x86 can do unaligned accesses itself.
+ *
+ * The strange macros are there to make sure these can't
+ * be misused in a way that makes them not work on other
+ * architectures where unaligned accesses aren't as simple.
+ */
+
+/**
+ * get_unaligned - get value from possibly mis-aligned location
+ * @ptr: pointer to value
+ *
+ * This macro should be used for accessing values larger in size than
+ * single bytes at locations that are expected to be improperly aligned,
+ * e.g. retrieving a u16 value from a location not u16-aligned.
+ *
+ * Note that unaligned accesses can be very expensive on some architectures.
+ */
+#define get_unaligned(ptr) (*(ptr))
+
+/**
+ * put_unaligned - put value to a possibly mis-aligned location
+ * @val: value to place
+ * @ptr: pointer to location
+ *
+ * This macro should be used for placing values larger in size than
+ * single bytes at locations that are expected to be improperly aligned,
+ * e.g. writing a u16 value to a location not u16-aligned.
+ *
+ * Note that unaligned accesses can be very expensive on some architectures.
+ */
+#define put_unaligned(val, ptr) ((void)( *(ptr) = (val) ))
+
+#endif /* _ASM_X86_UNALIGNED_H */