28219f7f99
The following patch is result of libsanitizer/merge.sh from c425db2eb558c263 (yesterday evening). Bootstrapped/regtested on x86_64-linux and i686-linux (together with the follow-up 3 patches I'm about to post). BTW, seems upstream has added riscv64 support for I think lsan/tsan, so if anyone is willing to try it there, it would be a matter of copying e.g. the s390*-*-linux* libsanitizer/configure.tgt entry to riscv64-*-linux* with the obvious s/s390x/riscv64/ change in it.
74 lines
2.9 KiB
C++
74 lines
2.9 KiB
C++
//===-- hwasan_memintrinsics.cpp --------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// This file is a part of HWAddressSanitizer and contains HWASAN versions of
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/// memset, memcpy and memmove
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///
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//===----------------------------------------------------------------------===//
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#include <string.h>
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#include "hwasan.h"
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#include "hwasan_checks.h"
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#include "hwasan_flags.h"
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#include "hwasan_interface_internal.h"
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#include "sanitizer_common/sanitizer_libc.h"
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using namespace __hwasan;
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void *__hwasan_memset(void *block, int c, uptr size) {
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CheckAddressSized<ErrorAction::Recover, AccessType::Store>(
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reinterpret_cast<uptr>(block), size);
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return memset(block, c, size);
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}
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void *__hwasan_memcpy(void *to, const void *from, uptr size) {
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CheckAddressSized<ErrorAction::Recover, AccessType::Store>(
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reinterpret_cast<uptr>(to), size);
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CheckAddressSized<ErrorAction::Recover, AccessType::Load>(
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reinterpret_cast<uptr>(from), size);
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return memcpy(to, from, size);
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}
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void *__hwasan_memmove(void *to, const void *from, uptr size) {
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CheckAddressSized<ErrorAction::Recover, AccessType::Store>(
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reinterpret_cast<uptr>(to), size);
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CheckAddressSized<ErrorAction::Recover, AccessType::Load>(
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reinterpret_cast<uptr>(from), size);
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return memmove(to, from, size);
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}
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void *__hwasan_memset_match_all(void *block, int c, uptr size,
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u8 match_all_tag) {
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if (GetTagFromPointer(reinterpret_cast<uptr>(block)) != match_all_tag)
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CheckAddressSized<ErrorAction::Recover, AccessType::Store>(
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reinterpret_cast<uptr>(block), size);
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return memset(block, c, size);
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}
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void *__hwasan_memcpy_match_all(void *to, const void *from, uptr size,
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u8 match_all_tag) {
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if (GetTagFromPointer(reinterpret_cast<uptr>(to)) != match_all_tag)
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CheckAddressSized<ErrorAction::Recover, AccessType::Store>(
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reinterpret_cast<uptr>(to), size);
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if (GetTagFromPointer(reinterpret_cast<uptr>(from)) != match_all_tag)
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CheckAddressSized<ErrorAction::Recover, AccessType::Load>(
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reinterpret_cast<uptr>(from), size);
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return memcpy(to, from, size);
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}
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void *__hwasan_memmove_match_all(void *to, const void *from, uptr size,
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u8 match_all_tag) {
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if (GetTagFromPointer(reinterpret_cast<uptr>(to)) != match_all_tag)
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CheckAddressSized<ErrorAction::Recover, AccessType::Store>(
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reinterpret_cast<uptr>(to), size);
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if (GetTagFromPointer(reinterpret_cast<uptr>(from)) != match_all_tag)
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CheckAddressSized<ErrorAction::Recover, AccessType::Load>(
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reinterpret_cast<uptr>(from), size);
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return memmove(to, from, size);
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}
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