sceAgcCbSetShRegistersDirect and the other register list writers threw on
a count of 0 although the matching size functions report 0 words for it.
PPSA05684 calls the writer with an empty list at its main menu and
terminated. An empty list now writes no packet and returns the cursor,
as its size says; a null buffer still throws.
AI-assisted: yes
Since 794714983 every fiber ran on an mmap'd host stack so that host calls
cannot overrun the small contexts PPSA01341 packs next to each other. A
title that derives state from the stack pointer then reads the wrong
memory: PPSA05684's job fibers have 512 KiB contexts at 1 MiB-aligned
addresses and find their job record by masking rsp with ~0xfffff, so the
job system lost track of a GameInit job and the game waited forever
right after loading big4r/actor76.txt. Its 64 KiB fibers fault later on
a host stack too.
A fiber now gets a host stack only when its context is smaller than
64 KiB; a larger context is the stack again, as on the console. The
limit sits between the 16 KiB contexts that need protection and the
64 KiB ones that need the guest stack (technical debt entry). The fiber
test runs a 512 KiB fiber and checks that its stack is in its context;
it fails without this change.
AI-assisted: yes
The signature (uint32_t service label, const NpUnifiedEntitlementLabel*,
progress*) follows SharpProspero Interop/AppContent/AppContent.cs.
dlc_emu dlc_content.cpp (fcf69b16) answers PARAMETER for a null label or
progress and NOT_FOUND for a label that is not installed additional
content. No additional content is ever installed here, as
sceAppContentAddcontMount, sceAppContentAddcontEnqueueDownload and
sceAppContentAddcontDelete already model, so every other call answers
NOT_FOUND and the progress, whose 16-byte layout SharpProspero gives,
is never written.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
sceFontCharactersRefersTextCodes fills a 64-byte FontTextCodes with the
order and code of a text character and keeps the current, start and
term characters at +0x28, +0x30 and +0x38. The traversal follows the
PS4 11.00 libSceFont.sprx disassembly posted in the review of #4050,
which implemented the same rules: Refers never compares the character
with the term and returns null for a clustered or synthetic character,
sceFontTextCodesStepNext returns null at the term after visiting it,
sceFontTextCodesStepBack returns null at the start character, and both
steps skip synthetic characters. Null from StepNext at the end of the
chain and from StepBack at the head of the chain is assumed and not
covered by the report.
The signatures follow Orbital's IDA type database and SharpProspero. A
null cursor or output returns null as in KytyPS5; a null text character
throws. guest_font_tests gets configure_windows_unwind so the expected
exception reaches the test on Windows.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Build packs from EncodeEntry output and check the hit and miss paths,
an entry stored under another key, a truncated entry, a damaged index,
an out-of-range record, a foreign compiler source version and an
unknown format. A child process covers pack discovery on a real disk
load, the ANYPS5_NO_PREBUILT_SHADERS opt out and fall-through to the
writable cache. ARCHITECTURE.md describes where the prebuilt lookup
sits.
Read-only packs of encoded cache entries are mapped once at startup from
the shader cache prebuilt directory (plus ANYPS5_PREBUILT_SHADER_CACHE,
opt out with ANYPS5_NO_PREBUILT_SHADERS). Disk loads try packs and loose
prebuilt folders first and fall through to the writable cache and the
compiler on a miss. Keys, source version, format and payload checksums
are validated exactly as for writable entries, and interval logs report
prebuilt hits, misses, rejections and load timings.
Depends on the uncached compile entry point only through the offline
tool that produces these packs; the loader itself is independent.
The library registered no shutdown callback, so a guest mixer thread kept calling sceAudioOut2ContextPush while exit ran the static destructors and mixed from the freed port table (#5864). Exports that read the port tables or output audio now hold a guard: once exit starts they park the thread with LibcAwaitExit_nid_postfix, and the shutdown callback waits for the calls already inside. A push waiting for a grain from sceAudioOut2ContextAdvance also wakes on the shutdown token, so the callback does not wait for an advance that is parked.
Mode 1 keeps subnormal inputs and flushes a result below 2^-126 to a
zero of its sign; mode 2 flushes subnormal inputs and rounds a subnormal
result in the f32 round mode, as measured on RDNA2 (gfx1030) in every
f32 round mode at IEEE=0 and IEEE=1. Both modes threw before.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
v_cmp_X_f32 and v_cmpx_X_f32 flush their denormal inputs by bit 0 of the
FLOAT_MODE f32 denormal field, as measured on RDNA2 (gfx1030): mode 1
keeps them and mode 2 flushes them. Both modes threw before.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
PrepareDispatch now creates a missing compute pipeline once the
descriptor set layout is known, so the driver's compile no longer runs
under GuestMemory::GpuMutex. Other queues, presentation and label
writes go on during it, and compiles from different queues overlap.
Two queues that need the same new variant create it once.
The pipeline is still created in dispatch() when the layout is only
built under the lock, or with APS5_LOCKED_BUILD=1. The creation passes
the context's PipelineCacheSynchronization to CreateComputePipeline.
Avijit Singh