psxrecomp

mirror of https://github.com/RetroPortingToolKit/psxrecomp synced 2026-10-26 02:11:36 -04:00

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T

Matthew Stanley 8b819eb7e0 interp: word-tag the ws site caches - stale verdicts corrupted the guest

MMX6 16:9 attract wedged (misaligned wild dispatch 0x21010001 -> fatal halt,
stack-sampled at psx_unknown_dispatch under dirty_ram_dispatch). Mechanism:
the enlarged site caches persist across overlay reloads, and the generation
counter only sees page-marking hooks (kernel writes + DMA executable-range
marks) - code replaced by plain CPU stores (loader memcpy) keeps the page
dirty and never bumps the generation, so a cached backdrop verdict derived
from the PREVIOUS overlay bytes could fire a GPR rewrite at the wrong
instruction. The old 256-slot cache had the same hole but evicted within
seconds; the 8192-slot cache widened the exposure to a real wedge.

Each entry now also stores the site instruction word and revalidates it on
lookup (one fetch_word) - any code change at the site forces re-derivation.
Cost on the hot path: one load + compare per candidate instruction.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

2026-07-03 20:51:17 -07:00

include

gl: frame_perf CPU-side attribution - flush/wide wall time + plumbing counters

2026-07-03 20:23:06 -07:00

launcher

launcher: drop the "Skip PSX BIOS" toggle — HLE boot-skip is automatic now

2026-07-02 16:50:41 -07:00

shaders

vulkan: 3rd renderer backend (WIP) — emitter, GPU-direct present, full-frame readback

2026-06-18 14:56:12 -07:00

src

interp: word-tag the ws site caches - stale verdicts corrupted the guest