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📄 hwasan.cpp(15.25 KB)
📄 hwasan.h(5.69 KB)
📄 hwasan.syms.extra(21 B)
📄 hwasan_allocator.cpp(13.71 KB)
📄 hwasan_allocator.h(3.26 KB)
📄 hwasan_blacklist.txt(282 B)
📄 hwasan_checks.h(4.04 KB)
📄 hwasan_dynamic_shadow.cpp(5.17 KB)
📄 hwasan_dynamic_shadow.h(838 B)
📄 hwasan_exceptions.cpp(2.68 KB)
📄 hwasan_flags.h(799 B)
📄 hwasan_flags.inc(3.27 KB)
📄 hwasan_globals.cpp(3.03 KB)
📄 hwasan_globals.h(1.85 KB)
📄 hwasan_interceptors.cpp(11.1 KB)
📄 hwasan_interceptors_vfork.S(409 B)
📄 hwasan_interface_internal.h(6.32 KB)
📄 hwasan_linux.cpp(15.83 KB)
📄 hwasan_malloc_bisect.h(1.67 KB)
📄 hwasan_mapping.h(2.01 KB)
📄 hwasan_memintrinsics.cpp(1.6 KB)
📄 hwasan_new_delete.cpp(2.29 KB)
📄 hwasan_poisoning.cpp(1.89 KB)
📄 hwasan_poisoning.h(756 B)
📄 hwasan_report.cpp(24.11 KB)
📄 hwasan_report.h(1.2 KB)
📄 hwasan_setjmp.S(2.81 KB)
📄 hwasan_tag_mismatch_aarch64.S(5.89 KB)
📄 hwasan_thread.cpp(3.9 KB)
📄 hwasan_thread.h(2.82 KB)
📄 hwasan_thread_list.cpp(442 B)
📄 hwasan_thread_list.h(6.2 KB)
📄 hwasan_type_test.cpp(918 B)

Editing: hwasan_mapping.h

//===-- hwasan_mapping.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
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file is a part of HWAddressSanitizer and defines memory mapping.
///
//===----------------------------------------------------------------------===//

#ifndef HWASAN_MAPPING_H
#define HWASAN_MAPPING_H

#include "sanitizer_common/sanitizer_internal_defs.h"
#include "hwasan_interface_internal.h"

// Typical mapping on Linux/x86_64:
// with dynamic shadow mapped at [0x770d59f40000, 0x7f0d59f40000]:
// || [0x7f0d59f40000, 0x7fffffffffff] || HighMem    ||
// || [0x7efe2f934000, 0x7f0d59f3ffff] || HighShadow ||
// || [0x7e7e2f934000, 0x7efe2f933fff] || ShadowGap  ||
// || [0x770d59f40000, 0x7e7e2f933fff] || LowShadow  ||
// || [0x000000000000, 0x770d59f3ffff] || LowMem     ||

// Typical mapping on Android/AArch64
// with dynamic shadow mapped: [0x007477480000, 0x007c77480000]:
// || [0x007c77480000, 0x007fffffffff] || HighMem    ||
// || [0x007c3ebc8000, 0x007c7747ffff] || HighShadow ||
// || [0x007bbebc8000, 0x007c3ebc7fff] || ShadowGap  ||
// || [0x007477480000, 0x007bbebc7fff] || LowShadow  ||
// || [0x000000000000, 0x00747747ffff] || LowMem     ||

// Reasonable values are 4 (for 1/16th shadow) and 6 (for 1/64th).
constexpr uptr kShadowScale = 4;
constexpr uptr kShadowAlignment = 1ULL << kShadowScale;

namespace __hwasan {

inline uptr MemToShadow(uptr untagged_addr) {
  return (untagged_addr >> kShadowScale) +
         __hwasan_shadow_memory_dynamic_address;
}
inline uptr ShadowToMem(uptr shadow_addr) {
  return (shadow_addr - __hwasan_shadow_memory_dynamic_address) << kShadowScale;
}
inline uptr MemToShadowSize(uptr size) {
  return size >> kShadowScale;
}

bool MemIsApp(uptr p);

}  // namespace __hwasan

#endif  // HWASAN_MAPPING_H

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