1 /* 2 * Copyright (c) 2018 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 // This file contains platform-specific typedefs and defines. 12 // Much of it is derived from Chromium's build/build_config.h. 13 14 #ifndef RTC_BASE_SYSTEM_ARCH_H_ 15 #define RTC_BASE_SYSTEM_ARCH_H_ 16 17 // Processor architecture detection. For more info on what's defined, see: 18 // http://msdn.microsoft.com/en-us/library/b0084kay.aspx 19 // http://www.agner.org/optimize/calling_conventions.pdf 20 // or with gcc, run: "echo | gcc -E -dM -" 21 #if defined(_M_X64) || defined(__x86_64__) 22 #define WEBRTC_ARCH_X86_FAMILY 23 #define WEBRTC_ARCH_X86_64 24 #define WEBRTC_ARCH_64_BITS 25 #define WEBRTC_ARCH_LITTLE_ENDIAN 26 #elif defined(_M_ARM64) || defined(__aarch64__) 27 #define WEBRTC_ARCH_ARM_FAMILY 28 #define WEBRTC_ARCH_64_BITS 29 #define WEBRTC_ARCH_LITTLE_ENDIAN 30 #elif defined(_M_IX86) || defined(__i386__) 31 #define WEBRTC_ARCH_X86_FAMILY 32 #define WEBRTC_ARCH_X86 33 #define WEBRTC_ARCH_32_BITS 34 #define WEBRTC_ARCH_LITTLE_ENDIAN 35 #elif defined(__ARMEL__) 36 #define WEBRTC_ARCH_ARM_FAMILY 37 #define WEBRTC_ARCH_32_BITS 38 #define WEBRTC_ARCH_LITTLE_ENDIAN 39 #elif defined(__MIPSEL__) 40 #define WEBRTC_ARCH_MIPS_FAMILY 41 #if defined(__LP64__) 42 #define WEBRTC_ARCH_64_BITS 43 #else 44 #define WEBRTC_ARCH_32_BITS 45 #endif 46 #define WEBRTC_ARCH_LITTLE_ENDIAN 47 #elif defined(__pnacl__) 48 #define WEBRTC_ARCH_32_BITS 49 #define WEBRTC_ARCH_LITTLE_ENDIAN 50 #elif defined(__EMSCRIPTEN__) 51 #define WEBRTC_ARCH_32_BITS 52 #define WEBRTC_ARCH_LITTLE_ENDIAN 53 #else 54 #error Please add support for your architecture in rtc_base/system/arch.h 55 #endif 56 57 #if !(defined(WEBRTC_ARCH_LITTLE_ENDIAN) ^ defined(WEBRTC_ARCH_BIG_ENDIAN)) 58 #error Define either WEBRTC_ARCH_LITTLE_ENDIAN or WEBRTC_ARCH_BIG_ENDIAN 59 #endif 60 61 #endif // RTC_BASE_SYSTEM_ARCH_H_ 62