Hybrid ICN (hICN) plugin
v21.06-rc0-4-g18fa668
collectd-5.12.0
src
libcollectdclient
collectd
stdendian.h
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/*
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* stdendian.h
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*
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* This header defines the following endian macros as defined here:
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* http://austingroupbugs.net/view.php?id=162
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*
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* BYTE_ORDER this macro shall have a value equal to one
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* of the *_ENDIAN macros in this header.
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* LITTLE_ENDIAN if BYTE_ORDER == LITTLE_ENDIAN, the host
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* byte order is from least significant to
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* most significant.
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* BIG_ENDIAN if BYTE_ORDER == BIG_ENDIAN, the host byte
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* order is from most significant to least
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* significant.
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*
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* The following are defined as macros:
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*
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* uint16_t bswap16(uint16_t x);
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* uint32_t bswap32(uint32_t x);
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* uint64_t bswap64(uint64_t x);
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* uint16_t htobe16(uint16_t x);
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* uint16_t htole16(uint16_t x);
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* uint16_t be16toh(uint16_t x);
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* uint16_t le16toh(uint16_t x);
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*
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* uint32_t htobe32(uint32_t x);
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* uint32_t htole32(uint32_t x);
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* uint32_t be32toh(uint32_t x);
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* uint32_t le32toh(uint32_t x);
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*
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* uint64_t htobe64(uint64_t x);
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* uint64_t htole64(uint64_t x);
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* uint64_t be64toh(uint64_t x);
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* uint64_t le64toh(uint64_t x);
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*
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* The header defines the following macro for OpenCL compatibility
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*
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https://www.khronos.org/registry/cl/sdk/2.0/docs/man/xhtml/preprocessorDirectives.html
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*
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* __ENDIAN_LITTLE__ if BYTE_ORDER == LITTLE_ENDIAN then this
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* macro is present for OpenCL compatibility
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*
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* The implementation provides a uniform interface to endian macros using only
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* system headers on recent Linux, Darwin, FreeBSD, Solaris and Windows
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systems.
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*
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* This approach is intended to avoid the need for preflight configure
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scripts.
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* An alternative approach would be to test compiler CPU architecture marcros.
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*
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* This header has had *limited* testing on recent C11/C++11 compilers and is
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* based on the austin bug tracker interface, manpages, and headers present in
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* Linux, FreeBSD, Windows, Solaris and Darwin.
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*
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* The header uses __builtin_bswapXX intrinsic with GCC/Clang (__GNUC__) on
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* platforms that do not provide bswap16, bswap32, bswap64 (Darwin)
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*
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* Public Domain.
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*/
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#if HAVE_STDINT_H
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#include <stdint.h>
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#endif
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/* Linux / GLIBC */
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#if defined(__linux__) || defined(__GLIBC__)
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#include <byteswap.h>
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#include <endian.h>
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#define __ENDIAN_DEFINED 1
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#define __BSWAP_DEFINED 1
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#define __HOSTSWAP_DEFINED 1
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#define _BYTE_ORDER __BYTE_ORDER
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#define _LITTLE_ENDIAN __LITTLE_ENDIAN
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#define _BIG_ENDIAN __BIG_ENDIAN
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#define bswap16(x) bswap_16(x)
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#define bswap32(x) bswap_32(x)
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#define bswap64(x) bswap_64(x)
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#endif
/* __linux__ || __GLIBC__ */
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/* BSD */
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#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || \
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defined(__OpenBSD__)
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#include <sys/endian.h>
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#define __ENDIAN_DEFINED 1
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#define __BSWAP_DEFINED 1
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#define __HOSTSWAP_DEFINED 1
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#endif
/* BSD */
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/* Solaris */
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#if defined(sun)
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#include <sys/byteorder.h>
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#include <sys/isa_defs.h>
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#define bswap16(x) BSWAP_16(x)
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#define bswap32(x) BSWAP_32(x)
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#define bswap64(x) BSWAP_64(x)
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/* sun headers don't set a value for _LITTLE_ENDIAN or _BIG_ENDIAN */
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#if defined(_LITTLE_ENDIAN)
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#undef _LITTLE_ENDIAN
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#define _LITTLE_ENDIAN 1234
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#define _BIG_ENDIAN 4321
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#define _BYTE_ORDER _LITTLE_ENDIAN
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#elif defined(_BIG_ENDIAN)
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#undef _BIG_ENDIAN
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#define _LITTLE_ENDIAN 1234
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#define _BIG_ENDIAN 4321
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#define _BYTE_ORDER _BIG_ENDIAN
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#endif
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#define __ENDIAN_DEFINED 1
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#endif
/* sun */
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/* AIX */
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#if defined(_AIX)
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#include <sys/machine.h>
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#if BYTE_ORDER == LITTLE_ENDIAN
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#define _LITTLE_ENDIAN 1234
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#define _BIG_ENDIAN 4321
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#define _BYTE_ORDER _LITTLE_ENDIAN
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#elif BYTE_ORDER == BIG_ENDIAN
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#define _LITTLE_ENDIAN 1234
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#define _BIG_ENDIAN 4321
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#define _BYTE_ORDER _BIG_ENDIAN
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#else
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#error Could not determine CPU byte order for AIX
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#endif
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#define __ENDIAN_DEFINED 1
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#endif
/* AIX */
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/* Windows */
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#if defined(_WIN32) || defined(_MSC_VER)
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/* assumes all Microsoft targets are little endian */
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#define _LITTLE_ENDIAN 1234
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#define _BIG_ENDIAN 4321
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#define _BYTE_ORDER _LITTLE_ENDIAN
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#define __ENDIAN_DEFINED 1
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#endif
/* _MSC_VER */
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/* OS X */
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#if defined(__APPLE__)
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#include <machine/endian.h>
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#define _BYTE_ORDER BYTE_ORDER
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#define _LITTLE_ENDIAN LITTLE_ENDIAN
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#define _BIG_ENDIAN BIG_ENDIAN
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#define __ENDIAN_DEFINED 1
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#endif
/* __APPLE__ */
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/* OpenCL */
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#if defined(__OPENCL_VERSION__)
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#define _LITTLE_ENDIAN 1234
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#define __BIG_ENDIAN 4321
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#if defined(__ENDIAN_LITTLE__)
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#define _BYTE_ORDER _LITTLE_ENDIAN
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#else
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#define _BYTE_ORDER _BIG_ENDIAN
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#endif
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#define bswap16(x) as_ushort(as_uchar2(ushort(x)).s1s0)
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#define bswap32(x) as_uint(as_uchar4(uint(x)).s3s2s1s0)
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#define bswap64(x) as_ulong(as_uchar8(ulong(x)).s7s6s5s4s3s2s1s0)
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#define __ENDIAN_DEFINED 1
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#define __BSWAP_DEFINED 1
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#endif
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/* Unknown */
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#if !__ENDIAN_DEFINED
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#error Could not determine CPU byte order
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#endif
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/* POSIX - http://austingroupbugs.net/view.php?id=162 */
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#ifndef BYTE_ORDER
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#define BYTE_ORDER _BYTE_ORDER
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#endif
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#ifndef LITTLE_ENDIAN
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#define LITTLE_ENDIAN _LITTLE_ENDIAN
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#endif
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#ifndef BIG_ENDIAN
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#define BIG_ENDIAN _BIG_ENDIAN
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#endif
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/* OpenCL compatibility - define __ENDIAN_LITTLE__ on little endian systems */
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#if _BYTE_ORDER == _LITTLE_ENDIAN
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#if !defined(__ENDIAN_LITTLE__)
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#define __ENDIAN_LITTLE__ 1
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#endif
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#endif
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/* Byte swap macros */
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#if !__BSWAP_DEFINED
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#ifndef bswap16
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/* handle missing __builtin_bswap16
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* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52624 */
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#if defined __GNUC__
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#define bswap16(x) __builtin_bswap16(x)
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#else
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#define bswap16(x) \
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((uint16_t)((((uint16_t)(x)&0xff00) >> 8) | (((uint16_t)(x)&0x00ff) << 8)))
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#endif
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#endif
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#ifndef bswap32
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#if defined __GNUC__
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#define bswap32(x) __builtin_bswap32(x)
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#else
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#define bswap32(x) \
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((uint32_t)( \
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(((uint32_t)(x)&0xff000000) >> 24) | (((uint32_t)(x)&0x00ff0000) >> 8) | \
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(((uint32_t)(x)&0x0000ff00) << 8) | (((uint32_t)(x)&0x000000ff) << 24)))
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#endif
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#endif
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#ifndef bswap64
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#if defined __GNUC__
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#define bswap64(x) __builtin_bswap64(x)
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#else
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#define bswap64(x) \
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((uint64_t)((((uint64_t)(x)&0xff00000000000000ull) >> 56) | \
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(((uint64_t)(x)&0x00ff000000000000ull) >> 40) | \
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(((uint64_t)(x)&0x0000ff0000000000ull) >> 24) | \
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(((uint64_t)(x)&0x000000ff00000000ull) >> 8) | \
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(((uint64_t)(x)&0x00000000ff000000ull) << 8) | \
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(((uint64_t)(x)&0x0000000000ff0000ull) << 24) | \
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(((uint64_t)(x)&0x000000000000ff00ull) << 40) | \
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(((uint64_t)(x)&0x00000000000000ffull) << 56)))
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#endif
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#endif
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#endif
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/* Host swap macros */
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#ifndef __HOSTSWAP_DEFINED
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#if _BYTE_ORDER == _LITTLE_ENDIAN
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#define htobe16(x) bswap16((x))
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#define htole16(x) ((uint16_t)(x))
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#define be16toh(x) bswap16((x))
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#define le16toh(x) ((uint16_t)(x))
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#define htobe32(x) bswap32((x))
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#define htole32(x) ((uint32_t)(x))
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#define be32toh(x) bswap32((x))
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#define le32toh(x) ((uint32_t)(x))
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#define htobe64(x) bswap64((x))
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#define htole64(x) ((uint64_t)(x))
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#define be64toh(x) bswap64((x))
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#define le64toh(x) ((uint64_t)(x))
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#elif _BYTE_ORDER == _BIG_ENDIAN
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#define htobe16(x) ((uint16_t)(x))
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#define htole16(x) bswap16((x))
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#define be16toh(x) ((uint16_t)(x))
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#define le16toh(x) bswap16((x))
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#define htobe32(x) ((uint32_t)(x))
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#define htole32(x) bswap32((x))
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#define be32toh(x) ((uint32_t)(x))
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#define le64toh(x) bswap64((x))
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#define htobe64(x) ((uint64_t)(x))
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#define htole64(x) bswap64((x))
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#define be64toh(x) ((uint64_t)(x))
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#define le32toh(x) bswap32((x))
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#endif
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#endif
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