Move to kernel style SPDX license identifiers

[lttng-ust.git] / include / lttng / ust-endian.h

diff --git a/include/lttng/ust-endian.h b/include/lttng/ust-endian.h
index 085ff0728e0f7d6fbde7c43e07c4c7e8591ec195..a0a6db3ba16b11daaccb7d78468baeda514b46ef 100644 (file)
--- a/include/lttng/ust-endian.h
+++ b/include/lttng/ust-endian.h
@@ -1,29 +1,48 @@
-#ifndef _LTTNG_UST_ENDIAN_H
-#define _LTTNG_UST_ENDIAN_H
-
 /*
- * lttng/ust-endian.h
+ * SPDX-License-Identifier: MIT
  *
- * Copyright 2012 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
  * endian.h compatibility layer.
- *
- * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
- * OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
- *
- * Permission is hereby granted to use or copy this program
- * for any purpose,  provided the above notices are retained on all copies.
- * Permission to modify the code and to distribute modified code is granted,
- * provided the above notices are retained, and a notice that the code was
- * modified is included with the above copyright notice.
  */
 
-#ifdef __linux__
+#ifndef _LTTNG_UST_ENDIAN_H
+#define _LTTNG_UST_ENDIAN_H
+
+#if (defined(__linux__) || defined(__CYGWIN__))
 #include <endian.h>
-#elif __FreeBSD__
-#include <machine/endian.h>
+#include <byteswap.h>
+#elif defined(__FreeBSD__)
+#include <sys/endian.h>
+#define bswap_16(x)    bswap16(x)
+#define bswap_32(x)    bswap32(x)
+#define bswap_64(x)    bswap64(x)
 #else
-#error "Please add support for your OS into lttng/ust-endian.h."
+#error "Please add support for your OS."
 #endif
 
+/*
+ * BYTE_ORDER, LITTLE_ENDIAN, and BIG_ENDIAN are only defined on Linux
+ * if __USE_BSD is defined. Force their definition.
+ */
+#ifndef BYTE_ORDER
+#define BYTE_ORDER __BYTE_ORDER
+#endif
+
+#ifndef LITTLE_ENDIAN
+#define LITTLE_ENDIAN __LITTLE_ENDIAN
+#endif
+
+#ifndef BIG_ENDIAN
+#define BIG_ENDIAN __BIG_ENDIAN
+#endif
+
+#ifndef FLOAT_WORD_ORDER
+#ifdef __FLOAT_WORD_ORDER
+#define FLOAT_WORD_ORDER       __FLOAT_WORD_ORDER
+#else /* __FLOAT_WORD_ORDER */
+#define FLOAT_WORD_ORDER       BYTE_ORDER
+#endif /* __FLOAT_WORD_ORDER */
+#endif /* FLOAT_WORD_ORDER */
+
 #endif /* _LTTNG_UST_ENDIAN_H */