1 files changed, 47 insertions, 0 deletions
diff --git a/src/arch/armnommu/include/bits/byteswap.h b/src/arch/armnommu/include/bits/byteswap.h
new file mode 100644
index 000000000..2aae08003
--- /dev/null
+++ b/src/arch/armnommu/include/bits/byteswap.h
@@ -0,0 +1,47 @@
+/*
+ *  Copyright (C) 2004 Tobias Lorenz
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef ETHERBOOT_BITS_BYTESWAP_H
+#define ETHERBOOT_BITS_BYTESWAP_H
+
+/* We do not have byte swap functions ... We are
+ * RISC processor ...
+ */
+
+static inline unsigned short __swap16(volatile unsigned short v)
+{
+    return ((v << 8) | (v >> 8));
+}
+
+static inline unsigned int __swap32(volatile unsigned long v)
+{
+    return ((v << 24) | ((v & 0xff00) << 8) | ((v & 0xff0000) >> 8) | (v >> 24));
+}
+
+#define __bswap_constant_16(x) \
+	((uint16_t)((((uint16_t)(x) & 0x00ff) << 8) | \
+		(((uint16_t)(x) & 0xff00) >> 8)))
+
+#define __bswap_constant_32(x) \
+	((uint32_t)((((uint32_t)(x) & 0x000000ffU) << 24) | \
+		(((uint32_t)(x) & 0x0000ff00U) <<  8) | \
+		(((uint32_t)(x) & 0x00ff0000U) >>  8) | \
+		(((uint32_t)(x) & 0xff000000U) >> 24)))
+
+# define __bswap_16(x) \
+    (__extension__							      \
+     ({ unsigned short int __bsx = (x);					      \
+        ((((__bsx) >> 8) & 0xff) | (((__bsx) & 0xff) << 8)); }))
+
+
+# define __bswap_32(x) \
+    (__extension__							      \
+     ({ unsigned int __bsx = (x);					      \
+        ((((__bsx) & 0xff000000) >> 24) | (((__bsx) & 0x00ff0000) >>  8) |    \
+	 (((__bsx) & 0x0000ff00) <<  8) | (((__bsx) & 0x000000ff) << 24)); }))
+
+#endif /* ETHERBOOT_BITS_BYTESWAP_H */