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TEST=snapshot_test, util_test CheckedMachAddressRange.* R=rsesek@chromium.org Review URL: https://codereview.chromium.org/666483002
88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
// Copyright 2014 The Crashpad Authors. All rights reserved.
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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/mac/checked_mach_address_range.h"
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#include "base/logging.h"
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#include "base/numerics/safe_conversions.h"
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namespace crashpad {
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CheckedMachAddressRange::CheckedMachAddressRange()
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: range_32_(0, 0), is_64_bit_(false), range_ok_(true) {
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}
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CheckedMachAddressRange::CheckedMachAddressRange(
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bool is_64_bit,
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mach_vm_address_t base,
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mach_vm_size_t size) {
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SetRange(is_64_bit, base, size);
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}
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void CheckedMachAddressRange::SetRange(bool is_64_bit,
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mach_vm_address_t base,
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mach_vm_size_t 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(base, 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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mach_vm_address_t CheckedMachAddressRange::Base() const {
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return is_64_bit_ ? range_64_.base() : range_32_.base();
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}
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mach_vm_size_t CheckedMachAddressRange::Size() const {
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return is_64_bit_ ? range_64_.size() : range_32_.size();
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}
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mach_vm_address_t CheckedMachAddressRange::End() const {
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return is_64_bit_ ? range_64_.end() : range_32_.end();
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}
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bool CheckedMachAddressRange::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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bool CheckedMachAddressRange::ContainsValue(mach_vm_address_t 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(value);
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}
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bool CheckedMachAddressRange::ContainsRange(
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const CheckedMachAddressRange& 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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} // namespace crashpad
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