mirror of
https://github.com/vtil-project/VTIL-Core
synced 2026-08-17 08:23:03 -04:00
81 lines
No EOL
3.7 KiB
C++
81 lines
No EOL
3.7 KiB
C++
// Copyright (c) 2020 Can Boluk and contributors of the VTIL Project
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are met:
|
|
//
|
|
// 1. Redistributions of source code must retain the above copyright notice,
|
|
// this list of conditions and the following disclaimer.
|
|
// 2. Redistributions in binary form must reproduce the above copyright
|
|
// notice, this list of conditions and the following disclaimer in the
|
|
// documentation and/or other materials provided with the distribution.
|
|
// 3. Neither the name of VTIL Project nor the names of its contributors
|
|
// may be used to endorse or promote products derived from this software
|
|
// without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
// POSSIBILITY OF SUCH DAMAGE.
|
|
//
|
|
#pragma once
|
|
#include <vtil/symex>
|
|
#include "../routine/basic_block.hpp"
|
|
|
|
namespace vtil
|
|
{
|
|
// List of reasons that might cause the virtual machine to exit.
|
|
//
|
|
enum class vm_exit_reason : uint8_t
|
|
{
|
|
none = 0,
|
|
stream_end = 0,
|
|
alias_failure = 1,
|
|
high_arithmetic = 2,
|
|
unknown_instruction = 3
|
|
};
|
|
|
|
// Basic virtual machine interface.
|
|
//
|
|
struct vm_interface
|
|
{
|
|
// Reads from the register.
|
|
//
|
|
// Virtual destructor for safe polymorphic deletion.
|
|
//
|
|
virtual ~vm_interface() = default;
|
|
|
|
// Reads from the register.
|
|
//
|
|
virtual symbolic::expression::reference read_register( const register_desc& desc ) const { logger::error( "Pure virtual call to vm_interface::read_register" ); }
|
|
|
|
// Reads the given number of bytes from the memory, returns null if aliasing fails.
|
|
//
|
|
virtual symbolic::expression::reference read_memory( const symbolic::expression::reference& pointer, size_t byte_count ) const { logger::error( "Pure virtual call to vm_interface::read_memory" ); }
|
|
|
|
// Writes to the register.
|
|
//
|
|
virtual void write_register( const register_desc& desc,symbolic::expression::reference value ) { logger::error( "Pure virtual call to vm_interface::write_register" ); }
|
|
|
|
// Writes the given expression to the memory, returns false if aliasing fails.
|
|
//
|
|
virtual bool write_memory( const symbolic::expression::reference& pointer, deferred_value<symbolic::expression::reference> value, bitcnt_t size ) { logger::error( "Pure virtual call to vm_interface::write_memory" ); }
|
|
bool write_memory_v( const symbolic::expression::reference& pointer, symbolic::expression::reference value ) { return write_memory( pointer, std::move( value ), value.size() ); }
|
|
|
|
// Runs the given instruction, returns whether it was successful.
|
|
//
|
|
virtual vm_exit_reason execute( const instruction& ins );
|
|
|
|
// Given an iterator from a basic block, executes every instruction until the end of the block
|
|
// is reached. If it exits due to any reason, returns the reason, otherwise ::none.
|
|
//
|
|
std::pair<il_const_iterator, vm_exit_reason> run( il_const_iterator it );
|
|
};
|
|
}; |