Adds an authoritative function-boundary source from the linker:
- New `xenia_xex::pdata` parses .pdata 8-byte entries (BeginAddress + packed
prolog/length/flags). Bit layout per Microsoft PE32 PowerPC spec: prolog in
bits 0..7, function_length in bits 8..29, flags in 30..31.
- `func::analyze_with_pdata` unions pdata BeginAddresses into the candidate
set, attaches `pdata_validated`/`pdata_length` to each `FuncInfo`, and trims
any function whose `end` overlaps the next start (catches mis-merge where
one row spanned two prologues — the audit-031 sub_824D23B0/sub_824D29F0
case).
- DB: extends `functions` with `pdata_validated BOOLEAN`, `pdata_length BIGINT`;
new table `pdata_entries`; index on pdata_validated.
- New `crates/xenia-analysis/SCHEMA.md` documents M1 layer + forward work.
Validation on Sylpheed: 25481 functions (was 12156) / 23073 pdata_validated /
0 orphans / 0 mis-merges. Audit-031 mis-merge resolved: sub_824D29F0 now has
its own row with `pdata_length=280` (70 dwords); sub_824D23B0 now correctly
ends at 0x824D2878 (`pdata_length=1224` matches prologue walk).
Tests 605→610. New 5-test pdata unit suite covers bit layout + sentinel +
out-of-range filtering + real-world layout round-trip.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
DiscImageDevice now walks the GDFX tree at open() and caches every
file/dir entry by full relative path; the previous root-only scan
returned ENOENT for any path under a subdirectory (dat/tables.pak,
media/x.wav). Lookups become O(n) over the cached vec.
xex::load_image gains a tracing span plus per-load metrics
(xex.load_image_ms histogram, xex.bytes_{in,out} counters) so the
observability subscriber the app installs can see decompression cost.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Rust reimplementation of the xenia Xbox 360 emulator targeting reverse-
engineering and preservation, initially scoped to Project Sylpheed.
Includes:
- XEX2 loader (LZX decompression, AES decryption, PE parsing)
- XISO / XGD2 disc image VFS
- PPC interpreter with 200+ opcodes and VMX128 decoding
- Static analyzer: functions, cross-references, labels, asm + SQLite output
- HLE kernel covering the xboxkrnl/xam subset used by Sylpheed init
- Debugger with in-memory and SQLite-backed execution tracing
- `xenia-rs` CLI with extract/dis/exec commands that produce cumulative,
superset SQLite databases and opt-in instruction/import/branch traces
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
