142 lines
4.6 KiB
C++
142 lines
4.6 KiB
C++
// Copyright 2015 The Crashpad Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "util/numeric/checked_address_range.h"
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#include "base/check_op.h"
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#include "base/format_macros.h"
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#include "base/strings/stringprintf.h"
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#include "build/build_config.h"
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#if BUILDFLAG(IS_APPLE)
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#include <mach/mach.h>
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#elif BUILDFLAG(IS_WIN)
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#include "util/win/address_types.h"
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#elif BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_ANDROID)
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#include "util/linux/address_types.h"
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#elif BUILDFLAG(IS_FUCHSIA)
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#include <zircon/types.h>
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#endif // BUILDFLAG(IS_APPLE)
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namespace crashpad {
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namespace internal {
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template <class ValueType, class SizeType>
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CheckedAddressRangeGeneric<ValueType, SizeType>::CheckedAddressRangeGeneric()
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: range_32_(0, 0),
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#if defined(COMPILER_MSVC)
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range_64_(0, 0),
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#endif // COMPILER_MSVC
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is_64_bit_(false),
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range_ok_(true) {
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}
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template <class ValueType, class SizeType>
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CheckedAddressRangeGeneric<ValueType, SizeType>::CheckedAddressRangeGeneric(
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bool is_64_bit,
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ValueType base,
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SizeType size)
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#if defined(COMPILER_MSVC)
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: range_32_(0, 0),
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range_64_(0, 0)
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#endif // COMPILER_MSVC
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{
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SetRange(is_64_bit, base, size);
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}
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template <class ValueType, class SizeType>
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ValueType CheckedAddressRangeGeneric<ValueType, SizeType>::Base() const {
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return is_64_bit_ ? range_64_.base() : range_32_.base();
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}
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template <class ValueType, class SizeType>
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SizeType CheckedAddressRangeGeneric<ValueType, SizeType>::Size() const {
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return is_64_bit_ ? range_64_.size() : range_32_.size();
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}
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template <class ValueType, class SizeType>
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ValueType CheckedAddressRangeGeneric<ValueType, SizeType>::End() const {
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return is_64_bit_ ? range_64_.end() : range_32_.end();
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}
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template <class ValueType, class SizeType>
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bool CheckedAddressRangeGeneric<ValueType, SizeType>::IsValid() const {
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return range_ok_ && (is_64_bit_ ? range_64_.IsValid() : range_32_.IsValid());
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}
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template <class ValueType, class SizeType>
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void CheckedAddressRangeGeneric<ValueType, SizeType>::SetRange(bool is_64_bit,
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ValueType base,
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SizeType size) {
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is_64_bit_ = is_64_bit;
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if (is_64_bit_) {
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range_64_.SetRange(base, size);
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range_ok_ = true;
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} else {
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range_32_.SetRange(static_cast<uint32_t>(base),
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static_cast<uint32_t>(size));
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range_ok_ = base::IsValueInRangeForNumericType<uint32_t>(base) &&
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base::IsValueInRangeForNumericType<uint32_t>(size);
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}
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}
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template <class ValueType, class SizeType>
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bool CheckedAddressRangeGeneric<ValueType, SizeType>::ContainsValue(
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ValueType value) const {
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DCHECK(range_ok_);
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if (is_64_bit_) {
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return range_64_.ContainsValue(value);
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}
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if (!base::IsValueInRangeForNumericType<uint32_t>(value)) {
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return false;
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}
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return range_32_.ContainsValue(static_cast<uint32_t>(value));
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}
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template <class ValueType, class SizeType>
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bool CheckedAddressRangeGeneric<ValueType, SizeType>::ContainsRange(
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const CheckedAddressRangeGeneric& that) const {
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DCHECK_EQ(is_64_bit_, that.is_64_bit_);
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DCHECK(range_ok_);
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DCHECK(that.range_ok_);
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return is_64_bit_ ? range_64_.ContainsRange(that.range_64_)
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: range_32_.ContainsRange(that.range_32_);
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}
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template <class ValueType, class SizeType>
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std::string CheckedAddressRangeGeneric<ValueType, SizeType>::AsString() const {
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return base::StringPrintf("0x%" PRIx64 " + 0x%" PRIx64 " (%s)",
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uint64_t{Base()},
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uint64_t{Size()},
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Is64Bit() ? "64" : "32");
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}
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// Explicit instantiations for the cases we use.
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#if BUILDFLAG(IS_APPLE)
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template class CheckedAddressRangeGeneric<mach_vm_address_t, mach_vm_size_t>;
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#elif BUILDFLAG(IS_WIN)
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template class CheckedAddressRangeGeneric<WinVMAddress, WinVMSize>;
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#elif BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_ANDROID)
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template class CheckedAddressRangeGeneric<LinuxVMAddress, LinuxVMSize>;
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#elif BUILDFLAG(IS_FUCHSIA)
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template class CheckedAddressRangeGeneric<zx_vaddr_t, size_t>;
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#endif // BUILDFLAG(IS_APPLE)
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} // namespace internal
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} // namespace crashpad
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