SegmentDescriptorTable.hh

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/*
 * Copyright 2021 Assured Information Security, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#pragma once
 
#include "Segment.hh"
 
#include <introvirt/core/fwd.hh>
#include <introvirt/core/memory/guest_ptr.hh>
 
#include <cstdint>
#include <memory>
#include <vector>
 
namespace introvirt {
 
namespace x86 {
 
class SegmentDescriptorTable final {
  public:
    Segment index(uint16_t idx) const;
 
    Segment selector(SegmentSelector sel) const;
 
    size_t count() const;
 
    SegmentDescriptorTable(const guest_ptr<void>& ptr, uint32_t limit);
 
  private:
    guest_ptr<char[]> ptr_;
    const uint32_t limit_;
};
 
} // namespace x86
} // namespace introvirt