Rename C++ header files to .hpp

[lttng-tools.git] / src / common / compat / endian.hpp

diff --git a/src/common/compat/endian.hpp b/src/common/compat/endian.hpp
new file mode 100644 (file)
index 0000000..ff38376
--- /dev/null
+++ b/src/common/compat/endian.hpp
@@ -0,0 +1,216 @@
+/*
+ * Copyright (C) 2011 David Goulet <dgoulet@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+/*
+ * This compat header provides the following defines:
+ *
+ *  LITTLE_ENDIAN
+ *  BIG_ENDIAN
+ *  BYTE_ORDER
+ *
+ * And functions / macros :
+ *
+ *  bswap_16()
+ *  bswap_32()
+ *  bswap_64()
+ *
+ *  htobe16()
+ *  htole16()
+ *  be16toh()
+ *  le16toh()
+ *
+ *  htobe32()
+ *  htole32()
+ *  be32toh()
+ *  le32toh()
+ *
+ *  htobe64()
+ *  htole64()
+ *  be64toh()
+ *  le64toh()
+ */
+
+#ifndef _COMPAT_ENDIAN_H
+#define _COMPAT_ENDIAN_H
+
+#if defined(__linux__) || defined(__CYGWIN__)
+#include <endian.h>
+#include <byteswap.h>
+
+/*
+ * htobe/betoh are not defined for glibc <2.9, so add them
+ * explicitly if they are missing.
+ */
+#ifdef __USE_BSD
+/* Conversion interfaces. */
+# include <byteswap.h>
+
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+#  ifndef htobe16
+#   define htobe16(x) __bswap_16(x)
+#  endif
+#  ifndef htole16
+#   define htole16(x) (x)
+#  endif
+#  ifndef be16toh
+#   define be16toh(x) __bswap_16(x)
+#  endif
+#  ifndef le16toh
+#   define le16toh(x) (x)
+#  endif
+
+#  ifndef htobe32
+#   define htobe32(x) __bswap_32(x)
+#  endif
+#  ifndef htole32
+#   define htole32(x) (x)
+#  endif
+#  ifndef be32toh
+#   define be32toh(x) __bswap_32(x)
+#  endif
+#  ifndef le32toh
+#   define le32toh(x) (x)
+#  endif
+
+#  ifndef htobe64
+#   define htobe64(x) __bswap_64(x)
+#  endif
+#  ifndef htole64
+#   define htole64(x) (x)
+#  endif
+#  ifndef be64toh
+#   define be64toh(x) __bswap_64(x)
+#  endif
+#  ifndef le64toh
+#   define le64toh(x) (x)
+#  endif
+
+# else /* __BYTE_ORDER == __LITTLE_ENDIAN */
+#  ifndef htobe16
+#   define htobe16(x) (x)
+#  endif
+#  ifndef htole16
+#   define htole16(x) __bswap_16(x)
+#  endif
+#  ifndef be16toh
+#   define be16toh(x) (x)
+#  endif
+#  ifndef le16toh
+#   define le16toh(x) __bswap_16(x)
+#  endif
+
+#  ifndef htobe32
+#   define htobe32(x) (x)
+#  endif
+#  ifndef htole32
+#   define htole32(x) __bswap_32(x)
+#  endif
+#  ifndef be32toh
+#   define be32toh(x) (x)
+#  endif
+#  ifndef le32toh
+#   define le32toh(x) __bswap_32(x)
+#  endif
+
+#  ifndef htobe64
+#   define htobe64(x) (x)
+#  endif
+#  ifndef htole64
+#   define htole64(x) __bswap_64(x)
+#  endif
+#  ifndef be64toh
+#   define be64toh(x) (x)
+#  endif
+#  ifndef le64toh
+#   define le64toh(x) __bswap_64(x)
+#  endif
+
+# endif /* __BYTE_ORDER == __LITTLE_ENDIAN */
+#endif /* __USE_BSD */
+
+#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)
+
+#elif defined(__sun__)
+#include <sys/byteorder.h>
+#ifndef __BIG_ENDIAN
+#define __BIG_ENDIAN 4321
+#endif /* __BIG_ENDIAN */
+#ifndef __LITTLE_ENDIAN
+#define __LITTLE_ENDIAN 1234
+#endif /* __LITTLE_ENDIAN */
+
+#ifdef _LITTLE_ENDIAN
+#define __BYTE_ORDER __LITTLE_ENDIAN
+#endif /* _LITTLE_ENDIAN */
+#ifdef _BIG_ENDIAN
+#define __BYTE_ORDER __BIG_ENDIAN
+#endif /* _BIG_ENDIAN */
+
+#define LITTLE_ENDIAN  __LITTLE_ENDIAN
+#define BIG_ENDIAN     __BIG_ENDIAN
+#define BYTE_ORDER     __BYTE_ORDER
+
+#define betoh16(x) BE_16(x)
+#define letoh16(x) LE_16(x)
+#define betoh32(x) BE_32(x)
+#define letoh32(x) LE_32(x)
+#define betoh64(x) BE_64(x)
+#define letoh64(x) LE_64(x)
+#define htobe16(x) BE_16(x)
+#define be16toh(x) BE_16(x)
+#define htobe32(x) BE_32(x)
+#define be32toh(x) BE_32(x)
+#define htobe64(x) BE_64(x)
+#define be64toh(x) BE_64(x)
+
+#elif defined(__APPLE__)
+# include <machine/endian.h>
+# include <libkern/OSByteOrder.h>
+
+# if BYTE_ORDER == LITTLE_ENDIAN
+#  define htobe16(x) OSSwapConstInt16(x)
+#  define htole16(x) (x)
+#  define be16toh(x) OSSwapConstInt16(x)
+#  define le16toh(x) (x)
+
+#  define htobe32(x) OSSwapConstInt32(x)
+#  define htole32(x) (x)
+#  define be32toh(x) OSSwapConstInt32(x)
+#  define le32toh(x) (x)
+
+#  define htobe64(x) OSSwapConstInt64(x)
+#  define htole64(x) (x)
+#  define be64toh(x) OSSwapConstInt64(x)
+#  define le64toh(x) (x)
+
+# else /* BYTE_ORDER == LITTLE_ENDIAN */
+#  define htobe16(x) (x)
+#  define htole16(x) OSSwapConstInt16(x)
+#  define be16toh(x) (x)
+#  define le16toh(x) OSSwapConstInt16(x)
+
+#  define htobe32(x) (x)
+#  define htole32(x) OSSwapConstInt32(x)
+#  define be32toh(x) (x)
+#  define le32toh(x) OSSwapConstInt32(x)
+
+#  define htobe64(x) (x)
+#  define htole64(x) OSSwapConstInt64(x)
+#  define be64toh(x) (x)
+#  define le64toh(x) OSSwapConstInt64(x)
+# endif
+
+#else
+#error "Please add support for your OS."
+#endif
+
+#endif /* _COMPAT_ENDIAN_H */