1 files changed, 56 insertions, 0 deletions
diff --git a/package/mtd-utils/src/include/byteswap.h b/package/mtd-utils/src/include/byteswap.h
new file mode 100644
index 000000000..6f9839f7a
--- /dev/null
+++ b/package/mtd-utils/src/include/byteswap.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) Bernhard Walle <bernhard@bwalle.de>, 2012
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Comatibility with BSD-like userland.
+ */
+#ifndef BYTESWAP_H_
+#define BYTESWAP_H_
+
+#ifdef __linux__
+#include_next <byteswap.h>
+#else
+
+#include <stdint.h>
+
+static inline uint16_t bswap_16(uint16_t value)
+{
+    return ((value & 0xff00) >> 8) | ((value & 0xff) << 8);
+}
+
+static inline uint32_t bswap_32(uint32_t value)
+{
+    return ((value & 0xff000000) >> 24) |
+           ((value & 0x00ff0000) >>  8) |
+           ((value & 0x0000ff00) <<  8) |
+           ((value & 0x000000ff) << 24);
+}
+
+static inline uint64_t bswap_64(uint64_t value)
+{
+    return ((value & 0xff00000000000000ull) >> 56) |
+           ((value & 0x00ff000000000000ull) >> 40) |
+           ((value & 0x0000ff0000000000ull) >> 24) |
+           ((value & 0x000000ff00000000ull) >>  8) |
+           ((value & 0x00000000ff000000ull) <<  8) |
+           ((value & 0x0000000000ff0000ull) << 24) |
+           ((value & 0x000000000000ff00ull) << 40) |
+           ((value & 0x00000000000000ffull) << 56);
+}
+
+#endif
+
+#endif /* BYTESWAP_H_ */