Call of Duty: Modern Warfare 3 (PPSA24263)

[camezaro-intc]

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Title

Call of Duty: Modern Warfare 3 (PPSA24263)

Content version tested

01.004.000

AnyPS5 commit

e61a7c7 (with branch feat/appcontent-systemservice-imports)

System tested

Windows 11, GCC 15.2.0, AMD Radeon RX 5700 XT (Driver 32.0.21045.16010)

Furthest point

Stops before the first frame

What is shown

Black presentation window (1920x1080), Vulkan swapchain created (1484x835), SDL audio output initialized and running, worker threads active (DCacheFS-Worker, Backend, Worker0-2, MemCard, Bink audio/video decoders), fastfile loader begins DB_LoadFastfiles: code_post_gfx, code_reloadable before halting.

Current blocker

libSceAppContent: The engine queries downloadable storage partition /download2 via sceAppContentDownloadDataGetAvailableSpaceKb and then calls sceAppContentDownload2Expand(expansionSize), which currently throws NotImplemented_nid_no_patch.

PR: https://github.com/camezaro-intc/AnyPS5/tree/feat/appcontent-systemservice-imports

How it was run

Relinked targeting secondary ELF:

relinker.exe --windows --registry --executable sp23/sp23-cod.elf eboot.elf app.exe

Guest modules staged in app0/sce_module/:

• libc.prx.guest.prx
• libSceNpCppWebApi.prx.guest.prx

[camezaro-intc]

Update:
With #11588 and #11620 (feat(libSceAppContent): support download0-2 partitions and expand), the previous roadblock (sceAppContentDownload2Expand not implemented when accessing /download2) is resolved.

• Furthest Point: Stop Before First Frame
• Status:
  • Vulkan presentation surface and 1484x835 swapchain initialize on the GPU (AMD Radeon RX 5700 XT).
  • SDL audio subsystem and Bink video threads start.
  • The fastfile loader enters DB_LoadFastfiles: code_post_gfx, code_reloadable, extracts and initializes the 25 .xpak caches in /download0/xpak_cache/, and starts asset processing.
  • No frame presented to screen yet.
• Open PRs: feat(libs): export MW3 app content and system service imports #11588, feat(libSceAppContent): support download0-2 partitions in format and space query #11620

[camezaro-intc]

Update: Fastfile Decompression Stall & High CPU Usage Resolved

Tested on Windows 11 (AMD Ryzen 5 3600X). Diagnosed and addressed the stall during initial fastfile loading:

1. Sub-millisecond TimedWait Busy-Spinning (#11725):

   • Polling worker threads using sceKernelUsleep(500) were busy-spinning on high-frequency counters due to LEAD_NANOS = 500000, causing 100% CPU usage across multiple cores.
   • Reducing LEAD_NANOS to 20 µs activates high-resolution waitable timers for sub-millisecond waits, dropping polling CPU usage to ~1.5%.

2. AMPR Command Buffer Capacity Exhaustion (#11727):

   • AnyPS5's synthetic command structs (40B ReadFile + 32B WriteAddress) take 72 bytes per chunk versus native PS5 dwords (~56B).
   • In a 768-byte buffer, Chunk 10 leaves only 8 bytes remaining—insufficient for the final 32-byte WriteAddress. The append returned SCE_KERNEL_ERROR_EBUSY, silently omitting the completion marker write (*pCompletion = 1) and stalling the guest job-manager.
   • Adding dynamic guest-heap buffer expansion resolves the capacity limit without dropping commands.

Observed Progression:
Fastfile reading now advances past slot 0 and offset 0x500000 / 0x580000, successfully finishes loading eng_code_post_gfx.ff, and continues reading code_reloadable.ff sequentially up to offset 0x900000, reaching sceGameUpdateCreateRequest.