libsanitizer/asan/asan_interceptors_memintrinsics.cc

   1 //===-- asan_interceptors_memintrinsics.cc --------------------------------===//
   2 //
   3 // This file is distributed under the University of Illinois Open Source
   4 // License. See LICENSE.TXT for details.
   5 //
   6 //===---------------------------------------------------------------------===//
   7 //
   8 // This file is a part of AddressSanitizer, an address sanity checker.
   9 //
  10 // ASan versions of memcpy, memmove, and memset.
  11 //===---------------------------------------------------------------------===//
  12
  13 #include "asan_interceptors_memintrinsics.h"
  14 #include "asan_report.h"
  15 #include "asan_stack.h"
  16 #include "asan_suppressions.h"
  17
  18 using namespace __asan;  // NOLINT
  19
  20 void *__asan_memcpy(void *to, const void *from, uptr size) {
  21   ASAN_MEMCPY_IMPL(nullptr, to, from, size);
  22 }
  23
  24 void *__asan_memset(void *block, int c, uptr size) {
  25   ASAN_MEMSET_IMPL(nullptr, block, c, size);
  26 }
  27
  28 void *__asan_memmove(void *to, const void *from, uptr size) {
  29   ASAN_MEMMOVE_IMPL(nullptr, to, from, size);
  30 }
  31
  32 #if SANITIZER_FUCHSIA
  33
  34 // Fuchsia doesn't use sanitizer_common_interceptors.inc, but the only
  35 // things there it wants are these three.  Just define them as aliases
  36 // here rather than repeating the contents.
  37
  38 decltype(memcpy) memcpy[[gnu::alias("__asan_memcpy")]];
  39 decltype(memmove) memmove[[gnu::alias("__asan_memmove")]];
  40 decltype(memset) memset[[gnu::alias("__asan_memset")]];
  41
  42 #endif  // SANITIZER_FUCHSIA