compiler-rt/lib/hwasan/hwasan_memintrinsics.cpp

   1 //===-- hwasan_memintrinsics.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 /// \file
  10 /// This file is a part of HWAddressSanitizer and contains HWASAN versions of
  11 /// memset, memcpy and memmove
  12 ///
  13 //===----------------------------------------------------------------------===//
  14
  15 #include <string.h>
  16 #include "hwasan.h"
  17 #include "hwasan_checks.h"
  18 #include "hwasan_flags.h"
  19 #include "hwasan_interface_internal.h"
  20 #include "sanitizer_common/sanitizer_libc.h"
  21
  22 using namespace __hwasan;
  23
  24 void *__hwasan_memset(void *block, int c, uptr size) {
  25   CheckAddressSized<ErrorAction::Recover, AccessType::Store>(
  26       reinterpret_cast<uptr>(block), size);
  27   return memset(block, c, size);
  28 }
  29
  30 void *__hwasan_memcpy(void *to, const void *from, uptr size) {
  31   CheckAddressSized<ErrorAction::Recover, AccessType::Store>(
  32       reinterpret_cast<uptr>(to), size);
  33   CheckAddressSized<ErrorAction::Recover, AccessType::Load>(
  34       reinterpret_cast<uptr>(from), size);
  35   return memcpy(to, from, size);
  36 }
  37
  38 void *__hwasan_memmove(void *to, const void *from, uptr size) {
  39   CheckAddressSized<ErrorAction::Recover, AccessType::Store>(
  40       reinterpret_cast<uptr>(to), size);
  41   CheckAddressSized<ErrorAction::Recover, AccessType::Load>(
  42       reinterpret_cast<uptr>(from), size);
  43   return memmove(to, from, size);
  44 }