From pspautotests threads/scheduling/syscallkinds:
- sceKernelUnloadModule takes ~400us that better threads can preempt
and worse ones don't get in on, so it uses the busy delay rather than
a wait.
- A successful sceKernelVolatileMemTryLock takes under 100us. It ate
500000 cycles as a hack for Crash Tag Team Racing, which has since
moved to (and no longer needs) the DrawSyncEatCycles compat flag.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
scePowerSetCpuClockFrequency refuses a CPU clock above the PLL's, and
scePowerGetCpuClockFrequencyFloat computes pll * n / 511 in single
precision like the firmware, instead of converting whole Hz, which was
off in the last digit. power/freq now passes.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
From pspautotests intr/waits:
- sceAudioOutputBlocking sets the channel's waiting flag before its
event flag wait, and when that wait fails at once (interrupts or
dispatch disabled, or inside an interrupt) it returns the error
without clearing the flag. The channel stays busy from then on, and
can't be released.
- The SRC blocking output fails the same way even when a completion is
already there, leaving the buffer armed.
- After a block that had samples in it, the mixer DMA is still playing
it out, so a buffer arriving then isn't read early or restarts it.
- sceKernelVolatileMemLock only writes the fake address and size
through pointers that are there, instead of faulting on NULL.
intr/waits now runs to the end; one scheduling marker still differs, from
async IO timing.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
Some DoState code meant for after a load ran on every save:
- scePower reset the bus frequency a game set (and with a locked CPU
speed, applied the current setting to the clock).
- sceDisplay reset the lag sync baseline, and could schedule lag sync in
the measuring pass only, which failed the save.
- GPUState dirtied the texture, sceUmd notified the UI, and sceMpeg
dropped a pending ringbuffer fix-up for an old state.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
Measured on a PSP (pspautotests gpu/timing/blittiming), a full-screen blit
from an unswizzled texture costs what the texture fetch costs: 16-bit formats
half of 32-bit, VRAM a fifth of RAM, and rectangles wider than ~128 texels
~7.5x as much as narrow strips, from texture cache thrashing. Framebuffer
format, filtering and blending don't matter. Ys I & II draws its movie as one
full-width sprite from a 565 texture in RAM, which takes 33ms - that, not the
decode, is what holds it to 30 fps.
All of the ME and GE costs speed up with the clock (2/3 as long at 333/166),
since the whole system runs from the one PLL.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
Mostly small stubs:
- sceImpose: GetParam/SetParam/Changes/SetStatus, plus the 6.60 alias of
sceImposeGetBatteryIconStatus. Also fixes that function's first output - it
is a plain "is it charging" boolean, not a BATTICON_ value. We wrote
PSP_IMPOSE_BATTICON_NONE (0x80000000) there, which games ignore but which the
VSH reads as "no battery" and draws the empty-battery indicator for. These
are the bulk of the traffic: the VSH calls sceImposeChanges once a frame, so
this alone removes ~10000 trapped calls from a boot.
- SysMemForKernel: sceKernelSetRebootKernel, sceKernelSetUmdCacheOn.
- scePower_driver: scePowerSetWakeupCondition.
- sceHprm_driver, sceUsb: one NID-named call each, as in JPCSP.
Three groups are deliberately left unresolved, with comments explaining why,
because resolving them lets real flash0 drivers walk into hardware we do not
emulate and the boot dies where it used to reach the shell:
- ThreadManForKernel mutex/fpl NIDs: the NAND and ID storage drivers use these
to init, then poll the NAND controller at 0xbd101300 forever.
- InterruptManagerForKernel intr registration: 31 calls, then a stall in GE
list execution with no plugin module ever started.
73 unresolved import hits over 37 distinct module/NID pairs remain in a VSH
boot, mostly sceSysEventForKernel, sceSuspendForKernel and the various
*_driver modules that need real hardware behind them.
The sceImpose savestate section goes to v2 for the two new state variables.
Co-Authored-By: Claude Opus 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01GZq8ZtJmFY7bkX5FVkr3P9
This is stuff encountered in the VSH boot research.
sceRtc_driver, scePower_driver, sceImpose_driver, ThreadManForKernel funcs,
sceRtcGetAlarmTick, sceHprm_driver/sceHprmReadLatch
sceVshBridge_Driver imports sceKernelResumeDispatchThread, SuspendDispatchThread,
and NotifyCallback from ThreadManForKernel, but they were only registered under
ThreadManForUser. Added sceKernelGetUserLevel and sceKernelIsUserModeThread (new).
Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01GZq8ZtJmFY7bkX5FVkr3P9
* Rename LogType to Log
* Explicitly use the Log:: enum when logging. Allows for autocomplete when editing.
* Mac/ARM64 buildfix
* Do the same with the hle result log macros
* Rename the log names to mixed case while at it.
* iOS buildfix
* Qt buildfix attempt, ARM32 buildfix
Henrik RydgårdandClaude Opus 5.5
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