Metasm

GCC / Clang (Linux)

Metasm is a just-in-time compiler written in C++, it fits in 20 instructions.

Overview

This project is firstly made to be used with Moe, but since i'm writing Moe and Metasm in a generic way, i found legitimate to create a repository for each.

#include <Metasm.hpp>
#include <iostream>

int main()
{
    meta::Engine engine(5);

    std::string script_test6 =
                        "PUSH 5\n"
                        "PUSH 3\n"
                        "MUL\n"     // 15
                        "PUSH 4\n"  // 15 4
                        "MUL\n"     // 60
                        "PUSH 10\n" // 60 10
                        "SWAP\n"    // 10 60
                        "DIV\n"    // 6
                        "PRINT\n";
                        // 6

    
    engine.load_script( script_test6 );
    
    std::function<int(void)> function = engine.compile(); // in-memory compilation
    std::cout << function() << std::endl;

    engine.compile( "basics-output", true ); // generates executable and assembly file from it
    
}

Building

Metasm uses CMake, and requires libgccjit installed

With llvm clang you need g++-6 to be installed

Options	Description	Default Value
BUILD_SHARED	builds Metasm as SHARED if ON	OFF
BUILD_EXAMPLES	build examples	ON
DEBUG	Enable debugging symbols	OFF

may supports:

• GCC
  • 5
  • 6
• Clang
  • 3.6
  • 3.7
  • 3.8
  • 3.9

let's say GP is the gccjit location where libgccjit.so is located:

apt-get install libgccjit-6-dev
git clone https://github.com/tonykero/Metasm.git
cd Metasm
mkdir build && cd build
export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${GP}
export LIBRARY_PATH=${LIBRARY_PATH}:${GP}
export PATH=${PATH}:${GP}
cmake -DGCCJIT_PATH=${GP} .. && make -j4

The path i used was /usr/lib/gcc/x86_64-linux-gnu/6 with libgccjit-6-dev

Examples

/examples

Language Details

Described here

License

The MIT License