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Diffstat (limited to 'lib/scudo/standalone/platform.h')
-rw-r--r-- | lib/scudo/standalone/platform.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/lib/scudo/standalone/platform.h b/lib/scudo/standalone/platform.h new file mode 100644 index 000000000..a897a566f --- /dev/null +++ b/lib/scudo/standalone/platform.h @@ -0,0 +1,70 @@ +//===-- platform.h ----------------------------------------------*- C++ -*-===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef SCUDO_PLATFORM_H_ +#define SCUDO_PLATFORM_H_ + +#if defined(__linux__) +#define SCUDO_LINUX 1 +#else +#define SCUDO_LINUX 0 +#endif + +#if defined(__ANDROID__) +#define SCUDO_ANDROID 1 +#else +#define SCUDO_ANDROID 0 +#endif + +#if defined(__Fuchsia__) +#define SCUDO_FUCHSIA 1 +#else +#define SCUDO_FUCHSIA 0 +#endif + +#if __LP64__ +#define SCUDO_WORDSIZE 64U +#else +#define SCUDO_WORDSIZE 32U +#endif + +#if SCUDO_WORDSIZE == 64U +#define FIRST_32_SECOND_64(a, b) (b) +#else +#define FIRST_32_SECOND_64(a, b) (a) +#endif + +#ifndef SCUDO_CAN_USE_PRIMARY64 +#define SCUDO_CAN_USE_PRIMARY64 (SCUDO_WORDSIZE == 64U) +#endif + +#ifndef SCUDO_MIN_ALIGNMENT_LOG +// We force malloc-type functions to be aligned to std::max_align_t, but there +// is no reason why the minimum alignment for all other functions can't be 8 +// bytes. Except obviously for applications making incorrect assumptions. +// TODO(kostyak): define SCUDO_MIN_ALIGNMENT_LOG 3 +#define SCUDO_MIN_ALIGNMENT_LOG FIRST_32_SECOND_64(3, 4) +#endif + +#if defined(__aarch64__) +#define SCUDO_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 48) +#else +#define SCUDO_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 47) +#endif + +// Older gcc have issues aligning to a constexpr, and require an integer. +// See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56859 among others. +#if defined(__powerpc__) || defined(__powerpc64__) +#define SCUDO_CACHE_LINE_SIZE 128 +#else +#define SCUDO_CACHE_LINE_SIZE 64 +#endif + +#define SCUDO_POINTER_FORMAT_LENGTH FIRST_32_SECOND_64(8, 12) + +#endif // SCUDO_PLATFORM_H_ |