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99 lines
2.5 KiB
99 lines
2.5 KiB
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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/* A cross-platform equivalent of bionic's <sys/endian.h>. */
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/* For __BIONIC__ and __GLIBC__ */
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#include <sys/cdefs.h>
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#if defined(__BIONIC__)
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#include <sys/endian.h>
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#elif defined(__GLIBC__)
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/* glibc's <endian.h> is like bionic's <sys/endian.h>. */
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#include <endian.h>
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/* glibc keeps htons and htonl in <netinet/in.h>. */
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#include <netinet/in.h>
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/* glibc doesn't have the 64-bit variants. */
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#define htonq(x) htobe64(x)
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#define ntohq(x) be64toh(x)
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/* glibc has different names to BSD for these. */
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#define betoh16(x) be16toh(x)
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#define betoh32(x) be32toh(x)
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#define betoh64(x) be64toh(x)
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#define letoh16(x) le16toh(x)
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#define letoh32(x) le32toh(x)
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#define letoh64(x) le64toh(x)
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#else
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#if defined(__APPLE__)
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/* macOS has some of the basics. */
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#include <sys/_endian.h>
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#else
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/* Windows has some of the basics as well. */
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#include <sys/param.h>
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#include <winsock2.h>
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/* winsock2.h *must* be included before the following four macros. */
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#define htons(x) __builtin_bswap16(x)
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#define htonl(x) __builtin_bswap32(x)
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#define ntohs(x) __builtin_bswap16(x)
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#define ntohl(x) __builtin_bswap32(x)
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#endif
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/* Neither macOS nor Windows have the rest. */
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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 htonq(x) __builtin_bswap64(x)
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#define ntohq(x) __builtin_bswap64(x)
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#define htobe16(x) __builtin_bswap16(x)
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#define htobe32(x) __builtin_bswap32(x)
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#define htobe64(x) __builtin_bswap64(x)
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#define betoh16(x) __builtin_bswap16(x)
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#define betoh32(x) __builtin_bswap32(x)
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#define betoh64(x) __builtin_bswap64(x)
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#define htole16(x) (x)
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#define htole32(x) (x)
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#define htole64(x) (x)
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#define letoh16(x) (x)
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#define letoh32(x) (x)
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#define letoh64(x) (x)
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#define be16toh(x) __builtin_bswap16(x)
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#define be32toh(x) __builtin_bswap32(x)
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#define be64toh(x) __builtin_bswap64(x)
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#define le16toh(x) (x)
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#define le32toh(x) (x)
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#define le64toh(x) (x)
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#endif
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