The tier mis-compiled and has been hard-gated off since 2026-06-25; overlay
gaps fall to gcc/tcc shards and the dirty-RAM interpreter, unchanged.
Re-do on master of the removal validated on the stale branch (6da8c02),
reconciled with everything master grew since the fork:
- Delete overlay_sljit.{c,h}, overlay_compile_worker.{c,h}, lib/sljit,
runtime/tests/sljit_*.c, and the runtime.cmake sources/include-dirs.
- Strip the sljit provider/backend from code_provider.{c,h},
overlay_backend.{c,h} ("sljit" in overlay_backend/PSX_OVERLAY_BACKEND now
degrades to auto so stale configs still boot), main.cpp, debug_server.c
(sljit_status/sljit_async/sljit_try TCP commands), overlay_loader.{c,h}
(live policy, JIT-on-miss, persisted-shard cache, async worker glue,
psx_sljit_call/cop2/memx host helpers — reachable only via the removed
cpu->sljit_helpers table), and cpu_state.h (SLJIT_HLP_* enum + the
sljit_helpers[] member; CPUState layout change reshards via the cg tag).
- Master-only entanglement resolved before deletion: 28165d6's Einhander WS
player-X bound emit existed in three paths (gcc code_generator, sljit,
dirty_ram_interp). The gcc shard link contract now forwards
psx_ws_player_x_bound (ABI v13, previous commit), so deleting the sljit
emit path loses no widescreen behavior; ffc6688's game-dispatch block
inside the dead psx_sljit_call helper goes with it.
- Reword comments that described sljit as a live backend (gpu.{c,h},
ws_*_detect.h, cosim_state.c, dirty_ram_interp.c, autocompile.h,
boot_state.h, config_loader.h, compile_overlays.py, and the CPS marker
comments the recompiler emits).
recompiler psxrecomp-game builds clean; game runtimes rebuilt + boot-verified
separately.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Replaces the old incomplete RAM-only fast_boot snapshot with a COMPLETE
hardware save-state captured at the BIOS->game handoff. First launch (and the
first launch after any update) boots the real BIOS normally and captures the
full machine state at the game's PS-EXE entry_pc; every subsequent same-build
launch restores it and presents the game's first frame instantly.
This is not HLE: it persists the real hardware state a real BIOS run produced.
Format (boot_state.h v2): a sectioned file with an integrity key
(bios_checksum + entry_pc + PSX_OVERLAY_CODEGEN_HASH + ABI tag + codegen ver).
Any mismatch -> reject -> normal boot + recapture, so a user/app update can
never silently load a stale snapshot. Missing/short/unknown sections also reject
(no partial restore).
Complete capture (one section per subsystem), the fix for the old snapshot's
real bug (it left GPU/SPU/CD/DMA/SIO at reset while CPU/RAM assumed configured):
- CPU regs, 2 MB RAM, 1 KB scratchpad, IRQ (i_stat/i_mask), root timers, guest
cycle counter, dirty-RAM page bitmap (guest-written code pages).
- GPU: display/draw-area/offset/mask/texpage + GPUSTAT bits + GP0 command
machine + VRAM-transfer state; VRAM (1 MB) via the renderer-agnostic
gr_vram_transfer_out/in hooks (so it is correct on the GPU-authoritative GL
backend, where the FBO -- not gpu.c vram[] -- is truth, and the FBO re-upload
on restore happens for free).
- SPU: register file + 24 voice decode/ADSR state + latches + 512 KB SPU RAM.
- CD-ROM: full controller FSM (regs/IRQ-latch/FIFOs/seek/read/pending/queued +
XA decoder history + disc-speed model).
- DMA: channels[7] + dpcr/dicr + async-transfer state.
- SIO: registers + pad-config FSM + memcard FSM (incl. per-slot mc_slots[]) +
cycle-paced shifter/ACK scheduler.
Host-side/recompiler-derived state (overlay/sljit tables, code-provider) is NOT
serialized -- it re-initializes fresh on the normal startup path.
Per-subsystem accessors use an X-macro field list so bytes/write/read can never
drift. Runtime-only; no recompiler/codegen change, no regen. Reuses the
[runtime] fast_boot key (semantics upgraded; type unchanged).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
dispatch_stats TCP command: g_dispatch_static_hits incremented on every
binary-search hit in generated dispatch; exposed alongside miss_total and
miss_unique so static coverage ratio is measurable numerically.
fast_boot = true in [runtime]: first launch runs BIOS normally (logos
visible) and captures full system state at game handoff to
fast_boot_<bios_cksum>_<entry_pc>.bin adjacent to the BIOS. Every
subsequent launch restores the snapshot and dispatches directly to the
game entry PC — no BIOS execution, instant start.
Snapshot captures: CPU (gpr/hi/lo/cop0/gte), RAM (2 MB), scratchpad,
dirty-RAM bitmap, i_stat/i_mask, timer state. GPU/SPU/VRAM not included
(game reinitialises). Display-disabled vblanks now clear SDL to black so
the window never shows OS-background white during game crt0 setup.
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
Alex Vanderveen