13cab2bb3Spatrick //===-- platform.h ----------------------------------------------*- C++ -*-===// 23cab2bb3Spatrick // 33cab2bb3Spatrick // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 43cab2bb3Spatrick // See https://llvm.org/LICENSE.txt for license information. 53cab2bb3Spatrick // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 63cab2bb3Spatrick // 73cab2bb3Spatrick //===----------------------------------------------------------------------===// 83cab2bb3Spatrick 93cab2bb3Spatrick #ifndef SCUDO_PLATFORM_H_ 103cab2bb3Spatrick #define SCUDO_PLATFORM_H_ 113cab2bb3Spatrick 123cab2bb3Spatrick // Transitive includes of stdint.h specify some of the defines checked below. 133cab2bb3Spatrick #include <stdint.h> 143cab2bb3Spatrick 15d89ec533Spatrick #if defined(__linux__) && !defined(__TRUSTY__) 163cab2bb3Spatrick #define SCUDO_LINUX 1 173cab2bb3Spatrick #else 183cab2bb3Spatrick #define SCUDO_LINUX 0 193cab2bb3Spatrick #endif 203cab2bb3Spatrick 213cab2bb3Spatrick // See https://android.googlesource.com/platform/bionic/+/master/docs/defines.md 223cab2bb3Spatrick #if defined(__BIONIC__) 233cab2bb3Spatrick #define SCUDO_ANDROID 1 243cab2bb3Spatrick #else 253cab2bb3Spatrick #define SCUDO_ANDROID 0 263cab2bb3Spatrick #endif 273cab2bb3Spatrick 283cab2bb3Spatrick #if defined(__Fuchsia__) 293cab2bb3Spatrick #define SCUDO_FUCHSIA 1 303cab2bb3Spatrick #else 313cab2bb3Spatrick #define SCUDO_FUCHSIA 0 323cab2bb3Spatrick #endif 333cab2bb3Spatrick 34d89ec533Spatrick #if defined(__TRUSTY__) 35d89ec533Spatrick #define SCUDO_TRUSTY 1 36d89ec533Spatrick #else 37d89ec533Spatrick #define SCUDO_TRUSTY 0 38d89ec533Spatrick #endif 39d89ec533Spatrick 40*810390e3Srobert #if defined(__LP64__) 413cab2bb3Spatrick #define SCUDO_WORDSIZE 64U 423cab2bb3Spatrick #else 433cab2bb3Spatrick #define SCUDO_WORDSIZE 32U 443cab2bb3Spatrick #endif 453cab2bb3Spatrick 463cab2bb3Spatrick #if SCUDO_WORDSIZE == 64U 473cab2bb3Spatrick #define FIRST_32_SECOND_64(a, b) (b) 483cab2bb3Spatrick #else 493cab2bb3Spatrick #define FIRST_32_SECOND_64(a, b) (a) 503cab2bb3Spatrick #endif 513cab2bb3Spatrick 523cab2bb3Spatrick #ifndef SCUDO_CAN_USE_PRIMARY64 533cab2bb3Spatrick #define SCUDO_CAN_USE_PRIMARY64 (SCUDO_WORDSIZE == 64U) 543cab2bb3Spatrick #endif 553cab2bb3Spatrick 563cab2bb3Spatrick #ifndef SCUDO_MIN_ALIGNMENT_LOG 573cab2bb3Spatrick // We force malloc-type functions to be aligned to std::max_align_t, but there 583cab2bb3Spatrick // is no reason why the minimum alignment for all other functions can't be 8 593cab2bb3Spatrick // bytes. Except obviously for applications making incorrect assumptions. 603cab2bb3Spatrick // TODO(kostyak): define SCUDO_MIN_ALIGNMENT_LOG 3 613cab2bb3Spatrick #define SCUDO_MIN_ALIGNMENT_LOG FIRST_32_SECOND_64(3, 4) 623cab2bb3Spatrick #endif 633cab2bb3Spatrick 643cab2bb3Spatrick #if defined(__aarch64__) 653cab2bb3Spatrick #define SCUDO_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 48) 663cab2bb3Spatrick #else 673cab2bb3Spatrick #define SCUDO_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 47) 683cab2bb3Spatrick #endif 693cab2bb3Spatrick 703cab2bb3Spatrick // Older gcc have issues aligning to a constexpr, and require an integer. 713cab2bb3Spatrick // See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56859 among others. 723cab2bb3Spatrick #if defined(__powerpc__) || defined(__powerpc64__) 733cab2bb3Spatrick #define SCUDO_CACHE_LINE_SIZE 128 743cab2bb3Spatrick #else 753cab2bb3Spatrick #define SCUDO_CACHE_LINE_SIZE 64 763cab2bb3Spatrick #endif 773cab2bb3Spatrick 783cab2bb3Spatrick #define SCUDO_POINTER_FORMAT_LENGTH FIRST_32_SECOND_64(8, 12) 793cab2bb3Spatrick 803cab2bb3Spatrick #endif // SCUDO_PLATFORM_H_ 81