X64Emulator

X64Emulator is a simplified emulator for the x86-64 (64-bit) architecture that mimics the behavior of an x64 CPU. It supports a subset of the x86-64 instruction set, emulates general-purpose registers, memory, a stack, and basic flag operations. The emulator is designed to be extensible and provides a framework for implementing additional instructions.

Features

• Emulates 64-bit general-purpose registers (e.g., rax, rbx, rcx, etc.)
• Simulates 1MB of memory
• Stack manipulation using push and pop
• Implements basic data movement, arithmetic, and logical instructions:
  • mov, add, sub, xor, cmp, test, and more
• Basic flag operations (ZF, CF, SF, etc.)
• Easily extensible instruction set using C++ lambdas and std::function

Usage

The X64Emulator class provides a framework for simulating 64-bit operations. You can create an instance of the emulator and execute x64 instructions through its built-in instruction set. Below is an example of how to instantiate and run a few instructions:

#include "X64Emulator.h"

int main() {
    X64Emulator emulator;

    // Example usage
    emulator.get_register("rax") = 5;
    emulator.get_register("rbx") = 3;
    
    // Perform some operations
    emulator.add("rax", "rbx");  // rax = rax + rbx
    
    std::cout << "Result in rax: " << emulator.get_register("rax") << std::endl;

    return 0;
}

Supported Instructions

Currently, the following instruction groups are supported:

• Data Movement: mov, push, pop, xchg, etc.
• Arithmetic: add, sub, inc, dec, neg, etc.
• Logical: and, or, xor, not, etc.
• Comparison: cmp, test
• Shift/Rotate: shl, shr, rol, ror, etc.

Roadmap

• Add support for more x86-64 instructions
• Improve memory management and implement memory-mapped I/O
• Add instruction decoding for binary executable formats (e.g., ELF, PE)
• Implement floating-point instructions and SSE/AVX

Building

To build X64Emulator, you will need a C++ compiler that supports C++11 or higher. You can optionally use Visual Studio. Here’s how to build the project with g++:

g++ -std=c++11 -o X64Emulator main.cpp

License

This project is licensed under the MIT License - see the LICENSE file for details.

Contributions

Feel free to open an issue or submit a pull request if you'd like to contribute or suggest improvements. All contributions are welcome!

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Thank you for checking out X64Emulator! Let me know if you encounter any issues or have any feedback.