mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-26 10:19:47 -04:00
Matthew Stanley
5041712a05
Accumulated working-tree state for the overlay-JIT-cache phase, committed as a
checkpoint before the Bug A fix (next commit):
- event_ring.{c,h}: always-on unified event-timeline ring (IRQ deliver/gate/
raise, I_STAT changes, DMA kick/sched/done, ENQ/DEQ per source, exec-mode
tagged). Edge-recorded, eviction-bounded, survives a blue screen; dump via
event_ring_dump/_tail/_clear.
- cdrom.c: disc_speed="instant" no longer collapses every sector read to the
500cy floor (which flooded ~1100 DMA3 completions/frame and starved main
code). CDROM_INSTANT_PERIOD bounds sector IRQs to CDROM_INSTANT_MAX_PER_FRAME
(32)/frame. Known caveat: a transient ~1-2s reentry storm at boot frame ~210
still trips the watchdog once, then recovers.
- interrupts.c: claimed-IRQ cooldown is now per-source — SIO stays 0 (card
reads need back-to-back IRQs); DMA/VBLANK/timer get CLAIMED_PROGRESS_QUANTUM
(8) blocks of guaranteed main-code progress between deliveries. Root cause of
the instant-disc freeze: cooldown=0 let the block leader re-take the
exception before its body ran (pinned at the 0x8005A1D8 field loop).
- gpu/dma/memory/sio/timers/psx_cycles: event-ring instrumentation at raise/
kick/complete/schedule sites; g_event_step_conservative (single-cycle event
stepping A/B used to refute the event-granularity hypothesis for Bug A).
- overlay_capture.c, overlay_loader.h, crc32: capture/manifest plumbing for
per-entry validity (Inc3).
- recompiler: overlay-mode emission updates (code_generator, main_psx).
- tools: compile_overlays.py audit/patch updates; tomba_loadtest.py.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
20 lines
521 B
C
20 lines
521 B
C
#pragma once
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#include <stdint.h>
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#include <stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Compute CRC32 (IEEE 802.3) over a byte buffer. */
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uint32_t crc32_compute(const uint8_t *data, size_t len);
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/* Incremental CRC32. Start from 0xFFFFFFFF, fold each chunk through
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* crc32_update, then XOR the final running value with 0xFFFFFFFF. The result
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* equals crc32_compute over the concatenation of the same chunks. */
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uint32_t crc32_update(uint32_t crc, const uint8_t *data, size_t len);
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#ifdef __cplusplus
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}
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#endif
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