| //===-- hwasan_poisoning.cc ---------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // 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" |
| |
| namespace __hwasan { |
| |
| uptr TagMemoryAligned(uptr p, uptr size, tag_t tag) { |
| CHECK(IsAligned(p, kShadowAlignment)); |
| CHECK(IsAligned(size, kShadowAlignment)); |
| uptr shadow_start = MEM_TO_SHADOW(p); |
| uptr shadow_size = MEM_TO_SHADOW_SIZE(size); |
| internal_memset((void *)shadow_start, tag, shadow_size); |
| return AddTagToPointer(p, tag); |
| } |
| |
| 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 |
