xref: /freebsd/contrib/llvm-project/compiler-rt/lib/asan/asan_interceptors_memintrinsics.cpp (revision e6bfd18d21b225af6a0ed67ceeaf1293b7b9eba5)
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
44