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Diffstat (limited to 'lib/hwasan/hwasan_memintrinsics.cpp')
-rw-r--r-- | lib/hwasan/hwasan_memintrinsics.cpp | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/lib/hwasan/hwasan_memintrinsics.cpp b/lib/hwasan/hwasan_memintrinsics.cpp new file mode 100644 index 000000000..e82d77a1b --- /dev/null +++ b/lib/hwasan/hwasan_memintrinsics.cpp @@ -0,0 +1,44 @@ +//===-- hwasan_memintrinsics.cpp --------------------------------*- C++ -*-===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +/// +/// \file +/// This file is a part of HWAddressSanitizer and contains HWASAN versions of +/// memset, memcpy and memmove +/// +//===----------------------------------------------------------------------===// + +#include <string.h> +#include "hwasan.h" +#include "hwasan_checks.h" +#include "hwasan_flags.h" +#include "hwasan_interface_internal.h" +#include "sanitizer_common/sanitizer_libc.h" + +using namespace __hwasan; + +void *__hwasan_memset(void *block, int c, uptr size) { + CheckAddressSized<ErrorAction::Recover, AccessType::Store>( + reinterpret_cast<uptr>(block), size); + return memset(UntagPtr(block), c, size); +} + +void *__hwasan_memcpy(void *to, const void *from, uptr size) { + CheckAddressSized<ErrorAction::Recover, AccessType::Store>( + reinterpret_cast<uptr>(to), size); + CheckAddressSized<ErrorAction::Recover, AccessType::Load>( + reinterpret_cast<uptr>(from), size); + return memcpy(UntagPtr(to), UntagPtr(from), size); +} + +void *__hwasan_memmove(void *to, const void *from, uptr size) { + CheckAddressSized<ErrorAction::Recover, AccessType::Store>( + reinterpret_cast<uptr>(to), size); + CheckAddressSized<ErrorAction::Recover, AccessType::Load>( + reinterpret_cast<uptr>(from), size); + return memmove(UntagPtr(to), UntagPtr(from), size); +} |