Five LOW-priority milestones bundled. Total ~700 LOC across 11 files.
## M9 — has_eh derived from pdata.flags exception bit
- New `functions.has_eh BOOLEAN NOT NULL` column. Derived from M1's
already-parsed `pdata.flags` (bit 31 of the packed word — the
exception-handler-present flag, distinct from bit 30 which is the
always-1 32-bit-code flag). Index idx_functions_has_eh.
- Sylpheed: 2,975 of 23,073 pdata-validated functions have EH (12.9%).
## M10 — .tls section / IMAGE_TLS_DIRECTORY32 parser
- New `xenia_xex::tls::parse_tls` parses the directory + zero-terminated
callback array. Returns None when the binary has no .tls section.
- New `tls_info` (singleton row) + `tls_callbacks(slot, address)` tables.
- New `DbWriter::write_tls()` no-ops on None.
- Sylpheed has no .tls section → 0 rows; infra ready for binaries with
__declspec(thread).
## M8 + M11 — function_pointer_arrays (dispatch tables + static initialisers)
- New `xenia_analysis::funcptr_arrays::analyze` widens M3's vtable scan:
detects runs of ≥2 function pointers in .rdata and classifies each as
`vtable` (M3 re-emit), `dispatch_table` (M8), or `static_init` (M11)
via a constructor-prologue heuristic (mfspr + small stwu).
- New tables `function_pointer_arrays(address PK, length, kind)` and
`function_pointer_array_entries(array_address, slot, function_address)`.
- Sylpheed: 722 vtables + 388 dispatch_tables = 1,110 arrays / 6,347 slots.
0 static_init detected (Sylpheed's ctors don't all match the
conservative heuristic; M11.5 future work can chain via the entry-
point's static-init driver).
## M12 — --lr-trace runtime canary-diff harness
- New CLI `exec --lr-trace=PC[,PC,...]` and `--lr-trace-out=PATH` flags.
Symbolic resolution (Class::method, Class::*) via M4 lookup. Env vars
XENIA_LR_TRACE / XENIA_LR_TRACE_OUT also work.
- New `KernelState::lr_trace_pcs` + `lr_trace_writer` + helper
`fire_lr_trace_if_match(hw_id)` invoked from the per-instr probe slot.
- JSONL output: pc/tid/hw/cycle/r3/r4/r5/r6/lr — superset of what
xenia-canary's --log_lr_on_pc patch emits, with a cycle counter for
cross-run reproducibility. Diff-friendly via `jq`.
- Lockstep digest unaffected: smoke test on entry-point PC fires once
with cycle=0/lr=BCBCBCBC/all-GPR-zero (correct initial state).
Tests 636→640 (+2 TLS tests, +2 funcptr_arrays tests). Schema golden
updated for new tables + has_eh column. Lockstep determinism preserved
(instructions=2000005 ×2 reruns identical).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Two MEDIUM milestones bundled (both opportunistic per plan; both small).
## M5 — indirect-dispatch reachability
- `xenia_analysis::indirect`: per-basic-block register tracker over each
detected function. Recognises the canonical static-vtable pattern
`lis+addi → lwz off(rA) → mtctr → bcctrl` where rA holds a known M3
vtable address. Emits one `Xref { kind: IndirectCall }` per resolvable
bcctrl site.
- PowerPC ABI awareness: `bl`-style calls clobber volatile r0..r12 + ctr
but preserve non-volatile r13..r31, so a vtable pointer parked in r30/r31
before a call survives.
- Label-based basic-block boundaries kill register state — bounds
false-positive risk for jump-IN paths.
- New `XrefKind::IndirectCall` variant (DB tag `'ind_call'`).
- New SQL view `v_indirect_reachability_from_entry` — strict superset of
`v_reachability_from_entry`, taking `ind_call` edges in the BFS.
Sylpheed yield: 0 edges detected. The binary's 1,001 static lis+addi
references into vtables are nearly all constructor-side vptr writes, not
dispatches; real method dispatch goes through `this->vptr` which requires
alias analysis we explicitly don't do. Documented in SCHEMA.md as the
expected limitation. Three unit tests cover the synthetic-correctness path.
## M7 — string / constant-pool detection
- `xenia_analysis::strings`: scans `.rdata` for runs of ≥ 6 printable
ASCII bytes (NUL-terminated) and ≥ 6 UTF-16LE code units (basic-plane
printable ASCII, NUL u16 terminator).
- New `strings(address PK, encoding, length, content)` table + encoding index.
- Implicit cross-ref via existing `xrefs.kind='ref'` rows whose target
matches a strings.address.
Sylpheed yield: 6,311 ASCII strings (including embedded HLSL shader source
and AS_CB_SURFACE_SWIZZLE_* assertion strings). 9,132 lis+addi sites
cross-reference detected strings — names source PCs near each string in
one query. Four unit tests cover encoding detection, NUL termination, and
short-run rejection.
Tests 626→633 (+3 indirect, +4 strings).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Adds detection of statically-allocated MSVC vtables in .rdata/.data:
- New `xenia_analysis::vtables` walks read-only sections looking for runs of
≥3 contiguous big-endian u32 values where each value lands on a known
function start (from M1's corrected functions table). 2-slot runs are
rejected to keep false-positive rate down.
- For each candidate the MSVC RTTI walk vtable[-1] → CompleteObjectLocator
→ TypeDescriptor → mangled name is attempted; on success the demangled
class name is recorded along with a best-effort RTTIClassHierarchyDescriptor
walk to fill base_classes_json. On failure (RTTI stripped — common for
shipped game binaries) the class is named ANON_Class_<fnv1a-hash> keyed
by sorted method-PC list, so identical vtables collapse to one entry.
- DB: new tables `vtables`, `methods`, `classes` with indices on
function_address and rtti_present. `write_analysis_results` takes a
`&[Vtable]` slice; `write_disasm` (back-compat) passes empty.
- cmd_dis wires the scan after xref analysis using
`func_analysis.functions.keys()` as the function-start oracle.
Validation on Sylpheed (RTTI stripped, as expected): 722 vtables / 499
unique classes / 5571 methods. Sanity invariant: every methods.function_address
joins to functions.address (0 broken refs). Largest vtable: 131 slots.
Tests 617→621 (+4 vtable unit tests covering 3-slot detect, 2-slot reject,
synth name stability, and synth name divergence).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Adds an MSVC name-demangling layer in front of M3's vtable / RTTI work:
- New `xenia_analysis::demangle` wraps the `msvc-demangler` crate (a Rust
port of LLVM's `MicrosoftDemangle.cpp`). `demangle()` short-circuits on
non-mangled inputs (`?` prefix check); `demangle_or_raw()` always returns
a record (raw passthrough on parse failure).
- Heuristic split of the formatted demangled string into structured fields
`(namespace_path, class_name, method_name, params_signature)`. Top-level
paren / template-bracket aware, so `a::b<c::d>::e` and signatures with
templated arg types parse correctly.
- DB: new `demangled_names(address, mangled, raw_demangled, namespace_path,
class_name, method_name, params_signature)` with indices on address /
class_name / method_name. Populated from any label whose name starts with
`?` plus any import name that happens to be mangled.
For Sylpheed (a fully stripped binary) this table is empty out-of-the-box;
the layer's value lands in M3, which will append rows for every RTTI
TypeDescriptor name found in `.rdata`.
Tests 610→617 (+7 demangler unit tests covering early-out, raw fallback,
member function form, RTTI form, qname split, paren-template safety, and
top-level `::` splitting).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
The old src/ppc.rs that re-implemented PPC formatting collapses into
a 30-line shim that delegates to xenia-cpu's single-source-of-truth
disasm. A new disasm.rs wraps the shared iterator and feeds enriched
items (analysis context: function membership, xrefs, mnemonics) into
pluggable sinks.
Sinks split: text.rs (objdump-like output), json.rs (JSONL stream
matching the new xenia dis --json mode), duckdb.rs (the analysis DB
ingest). db.rs is restructured into ingest_instructions +
write_analysis_results so a run can stop after raw ingest, and a new
target_hex column lands on the instructions table. sql_views.rs adds
five additive views layered on top of the raw tables.
Tests: assert-based JSON-fixture goldens (disasm_goldens) and a
PRAGMA-table_info schema golden (db_schema_golden) covering all
ingested tables and the SQL views.
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>
