sassembler

Sassembler is a portable, open-source assembler designed to translate assembly language source code into machine code for a range of architectures. It emphasizes modular backends, reproducible builds, and a compact core suitable for embedded development and education. Sassembler provides a stable, scriptable toolchain component that can be integrated into compilers, simulators, and build systems.

Features include a two-pass assembly process, macro expansion, conditional assembly, local labels, constants, and include files. It emits target object formats such as ELF, COFF, or raw binary, and supports hex and binary dumps. The project uses a unified assembly language with architecture-specific backends and supports multiple syntaxes.

Usage typically involves invoking the assembler with options to select the target architecture and output format, for example: sassembler -t arm -o hello.o hello.asm. Debug information, symbol tables, and relocation records facilitate linking and profiling. The tool is cross-platform, running on Linux, Windows, and macOS, and offers verbose error reporting and a stable command-line interface.

History and status: sassembler began as a small project to unify architecture backends and reduce tooling fragmentation. It is released under the MIT license and maintained with periodic releases and community contributions. See also NASM, GAS, and FASM for related tools.