libsanitizer/hwasan/hwasan_poisoning.cpp

   1 //===-- hwasan_poisoning.cpp ------------------------------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file is a part of HWAddressSanitizer.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "hwasan_poisoning.h"
  14
  15 #include "hwasan_mapping.h"
  16 #include "interception/interception.h"
  17 #include "sanitizer_common/sanitizer_common.h"
  18 #include "sanitizer_common/sanitizer_linux.h"
  19
  20 namespace __hwasan {
  21
  22 uptr TagMemory(uptr p, uptr size, tag_t tag) {
  23   uptr start = RoundDownTo(p, kShadowAlignment);
  24   uptr end = RoundUpTo(p + size, kShadowAlignment);
  25   return TagMemoryAligned(start, end - start, tag);
  26 }
  27
  28 }  // namespace __hwasan
  29
  30 // --- Implementation of LSan-specific functions --- {{{1
  31 namespace __lsan {
  32 bool WordIsPoisoned(uptr addr) {
  33   // Fixme: implement actual tag checking.
  34   return false;
  35 }
  36 }  // namespace __lsan