| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #pragma once |
| |
| /* A cross-platform equivalent of bionic's <sys/endian.h>. */ |
| |
| /* For __BIONIC__ and __GLIBC__ */ |
| #include <sys/cdefs.h> |
| |
| #if defined(__BIONIC__) |
| |
| #include <sys/endian.h> |
| |
| #elif defined(__GLIBC__) |
| |
| /* glibc's <endian.h> is like bionic's <sys/endian.h>. */ |
| #include <endian.h> |
| |
| /* glibc keeps htons and htonl in <netinet/in.h>. */ |
| #include <netinet/in.h> |
| |
| /* glibc doesn't have the 64-bit variants. */ |
| #define htonq(x) htobe64(x) |
| #define ntohq(x) be64toh(x) |
| |
| /* glibc has different names to BSD for these. */ |
| #define betoh16(x) be16toh(x) |
| #define betoh32(x) be32toh(x) |
| #define betoh64(x) be64toh(x) |
| #define letoh16(x) le16toh(x) |
| #define letoh32(x) le32toh(x) |
| #define letoh64(x) le64toh(x) |
| |
| #else |
| |
| #if defined(__APPLE__) |
| /* macOS has some of the basics. */ |
| #include <sys/_endian.h> |
| #else |
| /* Windows has some of the basics as well. */ |
| #include <sys/param.h> |
| #include <winsock2.h> |
| /* winsock2.h *must* be included before the following four macros. */ |
| #define htons(x) __builtin_bswap16(x) |
| #define htonl(x) __builtin_bswap32(x) |
| #define ntohs(x) __builtin_bswap16(x) |
| #define ntohl(x) __builtin_bswap32(x) |
| #endif |
| |
| /* Neither macOS nor Windows have the rest. */ |
| |
| #define __LITTLE_ENDIAN 1234 |
| #define __BIG_ENDIAN 4321 |
| #define __BYTE_ORDER __LITTLE_ENDIAN |
| |
| #define htonq(x) __builtin_bswap64(x) |
| |
| #define ntohq(x) __builtin_bswap64(x) |
| |
| #define htobe16(x) __builtin_bswap16(x) |
| #define htobe32(x) __builtin_bswap32(x) |
| #define htobe64(x) __builtin_bswap64(x) |
| |
| #define betoh16(x) __builtin_bswap16(x) |
| #define betoh32(x) __builtin_bswap32(x) |
| #define betoh64(x) __builtin_bswap64(x) |
| |
| #define htole16(x) (x) |
| #define htole32(x) (x) |
| #define htole64(x) (x) |
| |
| #define letoh16(x) (x) |
| #define letoh32(x) (x) |
| #define letoh64(x) (x) |
| |
| #define be16toh(x) __builtin_bswap16(x) |
| #define be32toh(x) __builtin_bswap32(x) |
| #define be64toh(x) __builtin_bswap64(x) |
| |
| #define le16toh(x) (x) |
| #define le32toh(x) (x) |
| #define le64toh(x) (x) |
| |
| #endif |