1 files changed, 88 insertions, 0 deletions
diff --git a/xen/include/acm/acm_endian.h b/xen/include/acm/acm_endian.h
new file mode 100644
index 0000000000..fd7229b846
--- /dev/null
+++ b/xen/include/acm/acm_endian.h
@@ -0,0 +1,88 @@
+/****************************************************************
+ * acm_endian.h 
+ * 
+ * Copyright (C) 2005 IBM Corporation
+ *
+ * Author:
+ * Stefan Berger <stefanb@watson.ibm.com>
+ * 
+ * Contributions:
+ * Reiner Sailer <sailer@watson.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, version 2 of the
+ * License.
+ *
+ * sHype header file defining endian-dependent functions for the
+ * big-endian policy interface
+ *
+ */
+#ifndef _ACM_ENDIAN_H
+#define _ACM_ENDIAN_H
+
+/* don't use these functions in performance critical sections! */
+
+/* set during initialization by testing */
+extern u8 little_endian;
+
+static inline u32 ntohl(u32 x) 
+{
+    if (little_endian)
+        return 
+	    ( (((x) >> 24) & 0xff      )| 
+	      (((x) >>  8) & 0xff00    )| 
+	      (((x) <<  8) & 0xff0000  )|
+	      (((x) << 24) & 0xff000000) );
+    else
+        return x;
+}
+
+static inline u16 ntohs(u16 x) 
+{
+    if (little_endian)
+        return 
+	    ( (((x) >> 8) & 0xff   )|
+	      (((x) << 8) & 0xff00 ) );
+    else
+	return x;
+}
+
+#define htonl(x) ntohl(x)
+#define htons(x) ntohs(x)
+
+static inline void arrcpy16(u16 *dest, const u16 *src, size_t n)
+{
+    unsigned int i = 0;
+    while (i < n) {
+       	dest[i] = htons(src[i]);
+       	i++;
+    }
+}
+
+static inline void arrcpy32(u32 *dest, const u32 *src, size_t n)
+{
+    unsigned int i = 0;
+    while (i < n) {
+	dest[i] = htonl(src[i]);
+	i++;
+    }
+}
+
+static inline void arrcpy(void *dest, const void *src, unsigned int elsize, size_t n)
+{
+    switch (elsize) {
+    case sizeof(u16):
+        arrcpy16((u16 *)dest, (u16 *)src, n);
+        break;
+
+    case sizeof(u32):
+        arrcpy32((u32 *)dest, (u32 *)src, n);
+        break;
+
+    default:
+        memcpy(dest, src, elsize*n);
+    }
+}
+
+#endif