- djm@cvs.openbsd.org 2014/04/20 02:30:25

     [misc.c misc.h umac.c]
     use get/put_u32 to load values rather than *((UINT32 *)p) that breaks on
     strict-alignment architectures; reported by and ok stsp@

1 files changed, 13 insertions, 35 deletions

diff --git a/umac.c b/umac.c
index 0c62145fa..0cb64321b 100644
--- a/umac.c
+++ b/umac.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: umac.c,v 1.8 2013/11/08 00:39:15 djm Exp $ */
+/* $OpenBSD: umac.c,v 1.9 2014/04/20 02:30:25 djm Exp $ */
 /* -----------------------------------------------------------------------
  * 
  * umac.c -- C Implementation UMAC Message Authentication
@@ -73,13 +73,15 @@
 
 #include "includes.h"
 #include <sys/types.h>
-
-#include "xmalloc.h"
-#include "umac.h"
 #include <string.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <stddef.h>
 
+#include "xmalloc.h"
+#include "umac.h"
+#include "misc.h"
+
 /* ---------------------------------------------------------------------- */
 /* --- Primitive Data Types ---                                           */
 /* ---------------------------------------------------------------------- */
@@ -131,41 +133,17 @@ typedef unsigned int	UWORD;  /* Register */
 /* --- Endian Conversion --- Forcing assembly on some platforms           */
 /* ---------------------------------------------------------------------- */
 
-#if HAVE_SWAP32
-#define LOAD_UINT32_REVERSED(p)         (swap32(*(const UINT32 *)(p)))
-#define STORE_UINT32_REVERSED(p,v)      (*(UINT32 *)(p) = swap32(v))
-#else /* HAVE_SWAP32 */
-
-static UINT32 LOAD_UINT32_REVERSED(const void *ptr)
-{
-    UINT32 temp = *(const UINT32 *)ptr;
-    temp = (temp >> 24) | ((temp & 0x00FF0000) >> 8 )
-         | ((temp & 0x0000FF00) << 8 ) | (temp << 24);
-    return (UINT32)temp;
-}
-
-# if (__LITTLE_ENDIAN__)
-static void STORE_UINT32_REVERSED(void *ptr, UINT32 x)
-{
-    UINT32 i = (UINT32)x;
-    *(UINT32 *)ptr = (i >> 24) | ((i & 0x00FF0000) >> 8 )
-                   | ((i & 0x0000FF00) << 8 ) | (i << 24);
-}
-# endif /* __LITTLE_ENDIAN */
-#endif /* HAVE_SWAP32 */
-
-/* The following definitions use the above reversal-primitives to do the right
- * thing on endian specific load and stores.
- */
-
 #if (__LITTLE_ENDIAN__)
-#define LOAD_UINT32_LITTLE(ptr)     (*(const UINT32 *)(ptr))
-#define STORE_UINT32_BIG(ptr,x)     STORE_UINT32_REVERSED(ptr,x)
+#define LOAD_UINT32_REVERSED(p)         get_u32(p)
+#define STORE_UINT32_REVERSED(p,v)      put_u32(p,v)
 #else
-#define LOAD_UINT32_LITTLE(ptr)     LOAD_UINT32_REVERSED(ptr)
-#define STORE_UINT32_BIG(ptr,x)     (*(UINT32 *)(ptr) = (UINT32)(x))
+#define LOAD_UINT32_REVERSED(p)         get_u32_le(p)
+#define STORE_UINT32_REVERSED(p,v)      put_u32_le(p,v)
 #endif
 
+#define LOAD_UINT32_LITTLE(p)           (get_u32_le(p))
+#define STORE_UINT32_BIG(p,v)           put_u32(p, v)
+
 /* ---------------------------------------------------------------------- */
 /* ---------------------------------------------------------------------- */
 /* ----- Begin KDF & PDF Section ---------------------------------------- */