Sigma Virtual Machine (Sigma VM) is a kind of high-level language virtual machine (HLLVM) that can provide a runtime environment for various of guest programming languages.
Sigma VM supports the following features:
- Basic operations like arithmetic, control flow actions, etc.
- Global variables and global initializer.
- Tracing garbage collector (will stop the world for now).
- Object destructor, called when an object needs to be collected.
- Module loader and inter-module call support, support for loading modules from files or memory. All loaded modules are managed by the GC, and can be unloaded automatically.
- System calls, support a variety of standard system calls, and provide interface for user-defined system calls in the VM library.
- Native call, support for loading shared libraries and calling functions from them (based on C FFI). All loaded libraries are managed by the GC, and can be closed automatically.
- VM library, including the VM itself, and interfaces for compiler front-ends used to parse and generate bytecode.
Sigma VM is written in Rust, so it provides Rust crate sigma_vm for interacting with the virtual machine.
For now, the sigma_vm crate has not been uploaded to the crates.io, you can read the documentation generated by rustdoc:
cargo doc --lib sigma_vm --open
There are many utilities for the Sigma VM in this repository:
sigma: driver/front-end of the Sigma VM, provides command line interface for running bytecode files.sbas: Sigma VM bytecode assembler, can generate bytecode files from assembly files.sbdump: Sigma VM bytecode dumper, can display disassembly information from bytecode file.
When running the above program, you can use the command line option --help for usage, for example:
cargo run --bin sigma -- --help
There are also examples that demonstrate the capabilities of Sigma VM:
For more information, see the README in the examples directory.
Copyright (C) 2023 MaxXing. Licensed under either of Apache 2.0 or MIT at your option.