diff --git a/RE_SYMBOLS.md b/RE_SYMBOLS.md index 3a6a3af..a69dcb8 100644 --- a/RE_SYMBOLS.md +++ b/RE_SYMBOLS.md @@ -22,6 +22,29 @@ strongly inferred from disassembly, **L** = tentative. | `0x82458508` | `Archive_StreamReadCrc32` | M | Streaming block reader that validates content with a reflected CRC-32 (init `0xFFFFFFFF`, final `~`, table at `g_Crc32Table`). Compares the computed CRC to a stored expected value (`state+144`). This is a **content-integrity** CRC, *not* the name-hash. | | `0x828992F0` | `g_Crc32Table` (data) | H | 256-entry reflected CRC-32 lookup table. Referenced only by `Archive_StreamReadCrc32` and its sibling loop at `0x82457AF8`. | +## IDXD reflective serialization framework + +Generic tagged-object (de)serializer shared by ~15 object families (craft, +weapon, message/character, effects, …). The `.pak` IDXD payloads are read +through this. + +| Address | Name | Conf | Description | +|---|---|---|---| +| `0x824486C0` | `IdxdLoad_Dispatch` | M | Entry: reads the magic and dispatches across variants `IDXD` (`0x49445844`), `IDX2`, `IDX3`, `IDXC`, `IXUD` → the matching parser. **15 callers** (one per object family). The target object is passed in `r3` — already constructed (defaults set) by the caller. | +| `0x82448D00` | `IdxdLoad_Variant2` | M | Sibling variant loader (also materializes the `IDXD` magic). | +| `0x82449640` | `Idxd_Parse` | M | The IDXD body parser: skips a BOM, then loops the string pool — per field, reads the name token, `Reflect_FindFieldIndex`, then dispatches on the **value's first char** (jump table at `0x824497F8`, index `firstchar - 0x22`) to type-specific writers. Only fields **present** in the pool are written. | +| `0x8244A2F0` | `Reflect_FindFieldIndex` | M | Look up a field-name string in a global name-vector at `0x820B4F18` (std::vector-like: count `+20`, data `+24`/SSO), via a `strncmp`-style compare (`0x825EDCE0`). Returns index or `-1`. | +| `0x8244A4B0` | `Reflect_SetField` | L | Apply a value to `object` using its per-instance property registry at `object+64` and a config string at `0x820B4F28`. | +| `0x820B4F18` | `g_FieldNameRegistry` (data) | L | Global reflection name-vector (runtime-built) used by `Reflect_FindFieldIndex`. | + +**Defaulted fields:** a field is written to the IDXD pool only when it differs +from its default, so `Idxd_Parse` never sets defaulted fields — their values are +established by each **type's constructor** (in the 15 `IdxdLoad_Dispatch` +callers) before load, via this same registry. Recovering them statically means +reversing those constructors and joining `field-name → struct-offset → +default-store`; a runtime dump of a loaded object's registry gives +`name → value` directly. (Open — see below.) + ## 3D resource subsystem | Address | Name | Conf | Description | @@ -76,8 +99,23 @@ extraction limit. ## Open threads -- **Defaulted IDXD fields** (`*Ratio`, the `*Count` family) carry no value on - disc. The large 16-byte-record binary node table inside a craft IDXD is - **spatial/mesh data**, not defaults (ruled out: it is not keyed by - `name_hash(field_key)`). Defaults must live in per-`schema_hash` - schema-definition tables (e.g. craft schema `0x43FAA517`) — location TBD. +- **Defaulted IDXD fields.** A field is omitted from the pool exactly when it + equals the schema default, so present values are all *overrides* and the + defaults cannot be inferred from them. Gap is large: across the 534 craft + (`schema 0x43FAA517`) entries, explicit-presence is `Acceleration` 42%, + `MaximumVelocity` 51%, `Turn_AngularVelocity` 31%, `FCSRange` 34%, + `ShieldRatio` 49% (`Size_X` 100%, `HP` 85%). So 40–70% of craft rely on + unknown defaults for core flight/defense stats. + - Ruled out: the big 16-byte-record binary node table inside a craft IDXD is + **spatial/mesh data**, not defaults (not keyed by `name_hash(field_key)`). + - `schema_hash` is **not** a code immediate and **not** `name_hash(typename)`. + - Defaults are set by each type's **constructor** (one per `IdxdLoad_Dispatch` + caller) via the reflection registry, not by `Idxd_Parse`. + - **Two finish routes.** (A, static) reverse the craft constructor: read its + field registrations (`name → offset`) and default-init stores + (`offset → value`), join them — heavy, and offset↔name correlation is + error-prone. (B, runtime) dump a loaded craft object's registry + (`obj+64`) / struct from xenia-rs or Canary — a fully-loaded craft already + holds every default; one dump yields `name → value`. **B is the efficient + finish** given the framework is generic; A's framework map above is the + prerequisite either way. diff --git a/apply_re_symbols.sql b/apply_re_symbols.sql index bba0268..f81faa7 100644 --- a/apply_re_symbols.sql +++ b/apply_re_symbols.sql @@ -11,3 +11,10 @@ UPDATE functions SET name = 'Str_ToLowerAscii' WHERE address = 2187284368 UPDATE functions SET name = 'Pak_IsIPFBHeader' WHERE address = 2185627568; -- 0x824607B0 UPDATE functions SET name = 'Archive_StreamReadCrc32' WHERE address = 2185594120; -- 0x82458508 UPDATE functions SET name = 'Res3D_LoadMeshChunk' WHERE address = 2187592336; -- 0x82640290 + +-- IDXD reflective serialization framework (defaulted-field hunt, 2026-07-09) +UPDATE functions SET name = 'IdxdLoad_Dispatch' WHERE address = 2185529024; -- 0x824486C0 (magic dispatch IDXD/IDX2/IDX3/IDXC/IXUD; 15 callers) +UPDATE functions SET name = 'IdxdLoad_Variant2' WHERE address = 2185530624; -- 0x82448D00 (sibling variant loader) +UPDATE functions SET name = 'Idxd_Parse' WHERE address = 2185532992; -- 0x82449640 (tokenize pool; per-field lookup+set) +UPDATE functions SET name = 'Reflect_FindFieldIndex' WHERE address = 2185536240; -- 0x8244A2F0 (field-name -> index in name-vector @0x820B4F18) +UPDATE functions SET name = 'Reflect_SetField' WHERE address = 2185536688; -- 0x8244A4B0 (apply value via object registry @obj+64)