SystemCallEvent.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 <introvirt/core/fwd.hh>
 
#include <cstdint>
#include <string>
 
namespace introvirt {
 
enum class FastCallType {
    FASTCALL_SYSCALL,
    FASTCALL_SYSRET,
    FASTCALL_SYSENTER,
    FASTCALL_SYSEXIT,
    FASTCALL_UNKNOWN
};
 
class SystemCallEventImpl;
 
class SystemCallEvent {
  public:
    virtual FastCallType instruction() const = 0;
 
    virtual SystemCall* handler() = 0;
 
    virtual const SystemCall* handler() const = 0;
 
    virtual std::string name() const = 0;
 
    virtual uint64_t raw_index() const = 0;
 
    virtual void hook_return(bool enabled) = 0;
 
    virtual bool hook_return() const = 0;
 
    virtual uint64_t return_address() const = 0;
 
    virtual SystemCallEventImpl& impl() = 0;
 
    virtual ~SystemCallEvent() = default;
 
  protected:
    SystemCallEvent() = default;
};
 
const std::string& to_string(FastCallType type);
 
std::ostream& operator<<(std::ostream& os, FastCallType type);
 
} // namespace introvirt