xref: /openbsd-src/gnu/llvm/compiler-rt/lib/hwasan/hwasan_poisoning.cpp (revision 810390e339a5425391477d5d41c78d7cab2424ac)

//===-- hwasan_poisoning.cpp ------------------------------------*- 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.
//
//===----------------------------------------------------------------------===//

#include "hwasan_poisoning.h"

#include "hwasan_mapping.h"
#include "interception/interception.h"
#include "sanitizer_common/sanitizer_common.h"
#include "sanitizer_common/sanitizer_linux.h"

namespace __hwasan {

uptr TagMemory(uptr p, uptr size, tag_t tag) {
  uptr start = RoundDownTo(p, kShadowAlignment);
  uptr end = RoundUpTo(p + size, kShadowAlignment);
  return TagMemoryAligned(start, end - start, tag);
}

}  // namespace __hwasan

// --- Implementation of LSan-specific functions --- {{{1
namespace __lsan {
bool WordIsPoisoned(uptr addr) {
  // Fixme: implement actual tag checking.
  return false;
}
}  // namespace __lsan