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| 1 | +# Changelog |
| 2 | + |
| 3 | +All notable changes to `afs-as` are documented in this file. |
| 4 | + |
| 5 | +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/), |
| 6 | +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). |
| 7 | + |
| 8 | +## [Unreleased] |
| 9 | + |
| 10 | +## [0.1.0] - 2026-04-06 |
| 11 | + |
| 12 | +Initial release. The standalone surface, library API, and differential test |
| 13 | +suite are documented in `README.md`. |
| 14 | + |
| 15 | +### Added |
| 16 | + |
| 17 | +- ARM64 instruction encoding for the supported standalone surface, including |
| 18 | + data processing, loads/stores, branches, FP/SIMD, atomics, system, and CFI. |
| 19 | +- Two-pass assembler with label resolution, expression classification, and |
| 20 | + Mach-O relocation emission (`PAGE21`, `PAGEOFF12`, `BRANCH26`, `GOT_LOAD_*`, |
| 21 | + `TLVP_LOAD_*`, `SUBTRACTOR`, `UNSIGNED`, `ADDEND`). |
| 22 | +- Mach-O 64 object writer: header, segment, sections, symbol table, dynamic |
| 23 | + symbol table, build version, and linker optimization hints. |
| 24 | +- Standalone CLI (`afs-as`) with `--help`, `--version`, `-o`, `-`, `--`, and |
| 25 | + documented exit codes. |
| 26 | +- Library API: `assemble_source`, `assemble_stmts`, `assemble_instructions`. |
| 27 | + `assemble_instructions` is a trusted fast path used by the ARMFORTAS |
| 28 | + compiler and panics on invalid `Inst` values by design. |
| 29 | +- Diagnostics with file, line, column, source snippet, and caret. |
| 30 | +- Layered test infrastructure: instruction-level differential against Apple |
| 31 | + `as`, full-object corpus parity, round-trip stability, structured fuzzing, |
| 32 | + garbage panic-resistance fuzzing, structured malformed-mutation rejection, |
| 33 | + end-to-end link/run, CLI smoke, diagnostic snapshots, performance sanity, |
| 34 | + and a clang probe dashboard covering ~94 C patterns at `-O0` and `-O2`. |
| 35 | + |
| 36 | +[Unreleased]: https://github.com/FortranGoingOnForty/afs-as/compare/v0.1.0...HEAD |
| 37 | +[0.1.0]: https://github.com/FortranGoingOnForty/afs-as/releases/tag/v0.1.0 |
