libsanitizer/asan/asan_interceptors_memintrinsics.cpp

   1 //===-- asan_interceptors_memintrinsics.cpp -------------------------------===//
   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 AddressSanitizer, an address sanity checker.
  10 //
  11 // ASan versions of memcpy, memmove, and memset.
  12 //===---------------------------------------------------------------------===//
  13
  14 #include "asan_interceptors_memintrinsics.h"
  15 #include "asan_report.h"
  16 #include "asan_stack.h"
  17 #include "asan_suppressions.h"
  18
  19 using namespace __asan;
  20
  21 void *__asan_memcpy(void *to, const void *from, uptr size) {
  22   ASAN_MEMCPY_IMPL(nullptr, to, from, size);
  23 }
  24
  25 void *__asan_memset(void *block, int c, uptr size) {
  26   ASAN_MEMSET_IMPL(nullptr, block, c, size);
  27 }
  28
  29 void *__asan_memmove(void *to, const void *from, uptr size) {
  30   ASAN_MEMMOVE_IMPL(nullptr, to, from, size);
  31 }
  32
  33 #if SANITIZER_FUCHSIA
  34
  35 // Fuchsia doesn't use sanitizer_common_interceptors.inc, but
  36 // the only things there it wants are these three.  Just define them
  37 // as aliases here rather than repeating the contents.
  38
  39 extern "C" decltype(__asan_memcpy) memcpy[[gnu::alias("__asan_memcpy")]];
  40 extern "C" decltype(__asan_memmove) memmove[[gnu::alias("__asan_memmove")]];
  41 extern "C" decltype(__asan_memset) memset[[gnu::alias("__asan_memset")]];
  42
  43 #endif  // SANITIZER_FUCHSIA