/*
* Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
// This file contains platform-specific typedefs and defines.
// Much of it is derived from Chromium's build/build_config.h.
#ifndef RTC_BASE_SYSTEM_ARCH_H_
#define RTC_BASE_SYSTEM_ARCH_H_
// Processor architecture detection. For more info on what's defined, see:
// https://docs.microsoft.com/en-us/cpp/preprocessor/predefined-macros
// https://www.agner.org/optimize/calling_conventions.pdf
// https://sourceforge.net/p/predef/wiki/Architectures/
// or with gcc, run: "echo | gcc -E -dM -"
#if defined(_M_X64) ||
defined(__x86_64__)
#define WEBRTC_ARCH_X86_FAMILY
#define WEBRTC_ARCH_X86_64
#define WEBRTC_ARCH_64_BITS
#define WEBRTC_ARCH_LITTLE_ENDIAN
#elif defined(_M_ARM64) ||
defined(__aarch64__)
#define WEBRTC_ARCH_ARM_FAMILY
#define WEBRTC_ARCH_64_BITS
#define WEBRTC_ARCH_LITTLE_ENDIAN
#elif defined(_M_IX86) ||
defined(__i386__)
#define WEBRTC_ARCH_X86_FAMILY
#define WEBRTC_ARCH_X86
#define WEBRTC_ARCH_32_BITS
#define WEBRTC_ARCH_LITTLE_ENDIAN
#elif defined(_M_ARM) ||
defined(__ARMEL__)
#define WEBRTC_ARCH_ARM_FAMILY
#define WEBRTC_ARCH_32_BITS
#define WEBRTC_ARCH_LITTLE_ENDIAN
#elif defined(__MIPSEL__) ||
defined(__MIPSEB__)
#define WEBRTC_ARCH_MIPS_FAMILY
#if defined(__LP64__)
#define WEBRTC_ARCH_64_BITS
#else
#define WEBRTC_ARCH_32_BITS
#endif
#if defined(__MIPSEL__)
#define WEBRTC_ARCH_LITTLE_ENDIAN
#else
#define WEBRTC_ARCH_BIG_ENDIAN
#endif
#elif defined(__PPC__)
#if defined(__PPC64__)
#define WEBRTC_ARCH_64_BITS
#else
#define WEBRTC_ARCH_32_BITS
#endif
#if defined(__LITTLE_ENDIAN__)
#define WEBRTC_ARCH_LITTLE_ENDIAN
#else
#define WEBRTC_ARCH_BIG_ENDIAN
#endif
#elif defined(__sparc) ||
defined(__sparc__)
#if __SIZEOF_LONG__ == 8
#define WEBRTC_ARCH_64_BITS
#else
#define WEBRTC_ARCH_32_BITS
#endif
#define WEBRTC_ARCH_BIG_ENDIAN
#elif defined(__riscv) && __riscv_xlen == 64
#define WEBRTC_ARCH_64_BITS
#define WEBRTC_ARCH_LITTLE_ENDIAN
#elif defined(__riscv) && __riscv_xlen == 32
#define WEBRTC_ARCH_32_BITS
#define WEBRTC_ARCH_LITTLE_ENDIAN
#elif defined(__loongarch32)
#define WEBRTC_ARCH_LOONG_FAMILY
#define WEBRTC_ARCH_LOONG32
#define WEBRTC_ARCH_32_BITS
#define WEBRTC_ARCH_LITTLE_ENDIAN
#elif defined(__loongarch64)
#define WEBRTC_ARCH_LOONG_FAMILY
#define WEBRTC_ARCH_LOONG64
#define WEBRTC_ARCH_64_BITS
#define WEBRTC_ARCH_LITTLE_ENDIAN
#elif defined(__pnacl__)
#define WEBRTC_ARCH_32_BITS
#define WEBRTC_ARCH_LITTLE_ENDIAN
#elif defined(__EMSCRIPTEN__)
#define WEBRTC_ARCH_32_BITS
#define WEBRTC_ARCH_LITTLE_ENDIAN
#else
#error Please add support
for your architecture in rtc_base/system/arch.h
#endif
#if !(
defined(WEBRTC_ARCH_LITTLE_ENDIAN) ^
defined(WEBRTC_ARCH_BIG_ENDIAN))
#error Define either WEBRTC_ARCH_LITTLE_ENDIAN
or WEBRTC_ARCH_BIG_ENDIAN
#endif
#endif // RTC_BASE_SYSTEM_ARCH_H_
