Supported platforms

Guests

• x86-64 Linux programs only; 32-bit x86 is out of scope.
• Statically linked executables (ET_EXEC, and static-pie without an interpreter). Dynamically linked programs (using glibc shared libraries) are not supported yet.

Hosts

Host	Status
Linux	Supported; differential tests take their reference here
macOS	Supported; the same Linux ELF runs in software
Windows	Supported; the same Linux ELF runs in software
Node.js (worker_threads)	Supported (npm package)
Chromium-based browsers	Supported (npm package)
Firefox	Supported (npm package)
Safari	Supported (npm package); CI tests the real Safari, and WebKit on x86-64 Linux

On macOS and Windows, paludarium does not hand a Linux binary to the host to execute: it handles the instructions and system calls itself. The same ELF therefore runs the same way on every host.

Terminal information (whether a stream is a tty, and the window size) comes from each host in its own way: TCGETS and TIOCGWINSZ on Linux, libc termios on macOS, and the console API (read only) on Windows, converted to the Linux form the guest expects.

Verified versions

Before each release, the same code is checked to give the same results on all of these (Testing and verification):

• Linux, macOS and Windows (GitHub Actions runners)
• Node.js (the latest release at the time of the check)
• Chromium, Firefox, and the real Safari (on a macOS runner)
• WebKit on x86-64 Linux (Playwright's build), whose JavaScriptCore compiles WebAssembly for x86-64 rather than for the Arm Mac

In the browser

• SharedArrayBuffer and module Workers.
• A cross-origin isolated page (Cross-Origin-Opener-Policy: same-origin and Cross-Origin-Embedder-Policy: require-corp); without it there is no SharedArrayBuffer.
• Browsers do not allow Atomics.wait on the main thread, so the emulator runs entirely in Workers.

Rust toolchain

• Built and tested with a pinned nightly (the one in rust-toolchain.toml, moved to the latest nightly every week).
• The crates' MSRV is 1.101, so today's stable Rust cannot build them.
• The WebAssembly build also uses nightly build-std and atomics.