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test(cpu): integrate pinned public Thumb compatibility suite

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Add --suite thumb while retaining default ARM preparation. Verify hashes, the Thumb-to-ARM evaluation bridge, and the result checkpoint; retain upstream provenance outside tracked files. Expand offline synthetic adapter and CLI regressions.

Darwin arm64 baseline: the unmodified Thumb ROM reaches ARM eval at 0x08000934 after 771 steps with r7=229 in debug and release. ARM remains passing. Online/offline preparation agrees and all 21 Python tests pass. CPU behavior is unchanged.
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0xrsydn 2026-10-05 20:40:37 +07:00
commit 08c8705904
11 changed files with 304 additions and 50 deletions
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docs/references.md
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@ -65,6 +65,7 @@ Hardware references used for the core:
- [GBATEK ARM data processing](https://problemkaputt.de/gbatek-arm-opcodes-data-processing-alu.htm), including R15/status notes. Its legacy `{P}` description alone does not establish ARM7 behavior.
- [mGBA ARM instruction implementation](https://github.com/mgba-emu/mgba/blob/master/src/arm/isa-arm.c), reviewed for Rd=15 test/compare SPSR restoration, User/System fallback, and no result write/refill. Also reviewed its word/byte/halfword/signed load ordering: writeback precedes the destination result.
- [jsmolka/gba-tests](https://github.com/jsmolka/gba-tests/tree/a7113b67e63f83a9b321696ddd7042ccfad6c881), pinned for independent ARM testing. Reviewed its MIT license, startup, result macros, compare/status tests, and load/writeback alias tests.
- [Pinned jsmolka Thumb entry](https://github.com/jsmolka/gba-tests/blob/a7113b67e63f83a9b321696ddd7042ccfad6c881/thumb/thumb.asm), [branch tests](https://github.com/jsmolka/gba-tests/blob/a7113b67e63f83a9b321696ddd7042ccfad6c881/thumb/branches.asm), and [memory tests](https://github.com/jsmolka/gba-tests/blob/a7113b67e63f83a9b321696ddd7042ccfad6c881/thumb/memory.asm), reviewed for r7 failure IDs, success-marker reset, the Thumb-to-ARM evaluation bridge, and empty-list transfer expectations.
- [armwrestler-gba-fixed](https://github.com/destoer/armwrestler-gba-fixed) and [arm7wrestler](https://github.com/Arisotura/arm7wrestler), considered as test sources; not integrated.
- [SingleStepTests ARM7TDMI](https://github.com/SingleStepTests/ARM7TDMI), considered as an experimental, emulator-generated test source; not integrated.
- [GBATEK ARM single data transfers](https://problemkaputt.de/gbatek-arm-opcodes-memory-single-data-transfer-ldr-str-pld.htm), for address calculation, indexing, load extension, and nominal timing.