mirror of
https://github.com/llvm/llvm-project.git
synced 2025-04-17 21:36:39 +00:00
96a4167b4c
Userspace page aliasing allows us to use middle pointer bits for tags without untagging them before syscalls or accesses. This should enable easier experimentation with HWASan on x86_64 platforms. Currently stack, global, and secondary heap tagging are unsupported. Only primary heap allocations get tagged. Note that aliasing mode will not work properly in the presence of fork(), since heap memory will be shared between the parent and child processes. This mode is non-ideal; we expect Intel LAM to enable full HWASan support on x86_64 in the future. Reviewed By: vitalybuka, eugenis Differential Revision: https://reviews.llvm.org/D98875
32 lines
854 B
C++
32 lines
854 B
C++
//===-- hwasan_flags.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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file is a part of HWAddressSanitizer.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
#ifndef HWASAN_FLAGS_H
|
|
#define HWASAN_FLAGS_H
|
|
|
|
#include "sanitizer_common/sanitizer_internal_defs.h"
|
|
|
|
namespace __hwasan {
|
|
|
|
struct Flags {
|
|
#define HWASAN_FLAG(Type, Name, DefaultValue, Description) Type Name;
|
|
#include "hwasan_flags.inc"
|
|
#undef HWASAN_FLAG
|
|
|
|
void SetDefaults();
|
|
};
|
|
|
|
Flags *flags();
|
|
|
|
} // namespace __hwasan
|
|
|
|
#endif // HWASAN_FLAGS_H
|