2026-09-03 (Porthole M1) Encoder sysmodule load and sceVencCore* entry-point self-resolution

Completed Milestone 1 (M1) of the Porthole payload: dynamic loading of the hardware video encoder sysmodule (0x00A0) and self-resolution of libSceVencCore entry points to callable pointers via loaded module export table traversal.

  1. Wire contract stable in src/porthole/porthole.h. Preserved exact wire layout (ports 9805/9806, 24-byte PPAD record layout, and status codes). Exposed porthole_encoder_api to carry resolved entry points (sceVencCoreQueryMemorySize, sceVencCoreCreateEncoder, sceVencCoreGetAuData, sceVencCoreSetInputFrame, sceVencCoreStartSequence, sceVencCoreStopSequence, sceVencCoreDeleteEncoder, sceVencCoreSyncEncode), alongside porthole_encoder_get_api() and porthole_set_payload_args().

  2. Freestanding self-resolution in src/porthole/porthole.c. Implemented porthole_encoder_open():

    • Resolves sceSysmoduleLoadModule dynamically (via weak platform import or kernel R/W dynlib resolution).
    • Invokes sceSysmoduleLoadModule(0x00A0) (VENC), confirmed on hardware to return 0x0.
    • Walks the loaded module's live kernel dispatch table (kproc + 0x3E8 via krw_dynlib_resolve_any and NID hashing, D277/D278) to resolve the sceVencCore* function pointers.
    • Validates that essential entry points are non-null and located in callable address space (>= 0x10000).
    • Cleanly returns PORTHOLE_NO_ENCODER on host builds, preserving host self-test semantics.

  3. Updated selftest in src/porthole/porthole_selftest.c. Verified static assertions for 24-byte record layout, valid/malformed record decode, and confirmed that porthole_encoder_open() returns PORTHOLE_NO_ENCODER and porthole_encoder_get_api() returns NULL when executed on the host.

  4. Aligned src/probe/sections/encoder.c (106-encoder). Updated obs_find_symbol_in_handle to walk the live kernel dispatch table when kernel R/W (krw_is_ready()) is active. This connects the probe's symbol census and presence checks (create-present, getaudata-present, query-present) directly to the dynamic export table.

Verified: make -C src/porthole check (host selftest), make -C src/porthole skeleton (freestanding cross-compilation for x86_64-unknown-freebsd), and make host all pass cleanly.