Commit Graph

572 Commits

Author SHA1 Message Date
Shokunin 856cbabffe Render passes: make pass image textures as slots fill
pass_slot_cap() limits a generation to what two generations fit in 256 MiB,
but pass_gen_textures() allocated all 17 slots of each generation at
internal-resolution size as soon as passes ran, whatever the cap: 34
textures, about 167 MB at 4x and 1.5 GB at 12x for at most two used slots.

Slot textures are now made on first use, never past the cap, so the budget
holds at any internal scale; a size change frees the old set, and context
teardown frees every pass texture, backup and journal FBO and forgets their
names (a new context no longer reuses dead ones). render_pass_stats reports
image_textures and image_bytes.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-28 21:02:48 -07:00
Shokunin 1a8f382085 Render passes: put host nesting back after a watchdog abort
The watchdog leaves a runaway pass by longjmp from inside guest code, which
skips the exits of every frame it leaves: generated functions' bb_defer
cleanup, overlay_loader_call_native's unit depth, the native-shard stack and
cycle-flush hook, the DMA kick's exec depth, and the dirty-RAM interpreter's
active/phase/precise flags, resume latch and pending load. The checkpoint
now saves all of it and the restore puts it back (bb_defer with the cycle
freeze), as the scheduler and exception landings do for theirs. An overlay
shard's unpublished pass cycles are flushed into the frozen clock at the
landing so they never reach the live one.

PSX_RENDER_PASS_VERIFY also checks that a pass which returned normally left
the nesting balanced, since the restore would hide that. render_pass_stats
gains nesting_repairs and the fault log names what the landing undid.

render_pass_abort_test aborts a pass from five nested frames (real
render_pass.c and psx_cycles.c, mock devices and presenter) and checks every
value, the clock and RAM; it fails without this change.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-28 21:02:47 -07:00
Shokunin eb6b8e49b9 Render passes: publish overlay cycles first; test the store policy; verify devices
- Publish an overlay DLL's pending cycles before a pass freezes the clock;
  otherwise the pass's first store would publish them into the frozen clock
  and the restore would drop them from the live timeline.
- The pass store policy moves into render_pass_plan.c as
  render_pass_mmio_class() and gets a table test (SPU key-on, CD, timers,
  SIO, MDEC and other DMA channels dropped; GP0, GP1 DMA mode/info, GPU and
  OTC DMA, DICR/DPCR, I_STAT/I_MASK allowed).
- PSX_RENDER_PASS_VERIFY also hashes CD, SPU, SIO and MDEC state.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-28 21:02:47 -07:00
Shokunin 82a835b20b frame_fingerprint reset_on_load for A/B runs from one savestate
frame_fingerprint reset_on_load=1 restarts the rolling hashes and the ring
when the next savestate load completes, so two runs that load the same state
(for example with and without a presentation mod) compare frame by frame
from the same guest point. Debug tooling only.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-28 21:02:47 -07:00
Shokunin d22ebac9a4 Host-timed render passes for true in-between frames
psx_mod_render_pass_plan() / psx_mod_render_pass() let a trusted plugin
redraw its game between two logic ticks with the game's own draw code. A
pass is a sandboxed nested guest call:

- time is frozen: cycles are counted (GTE and mult/div deadlines keep
  working) but no device advances, no VBlank or device event fires and no
  interrupt is delivered; GPU linked-list DMA and delayed completions finish
  synchronously (psx_cycles freeze, interrupts, dma);
- stores go straight to RAM/scratchpad, bypassing code-page tracking,
  overlay watch and write traces; MMIO is an allow-list (GP0, GP1 DMA mode /
  info, GPU and OTC DMA, I_STAT/I_MASK) and SPU, CD, timer and other device
  stores are dropped and counted (memory.c);
- afterwards CPU (with the GTE), RAM, scratchpad, I-cache tags, interrupt,
  timer, DMA and GPU registers are restored exactly (render_pass.c, a GPU
  register checkpoint without savestate side effects), with a guest-cycle
  watchdog that rolls a runaway pass back;
- on OpenGL the declared display rect (hr colour + mask stencil, raw mirror,
  native-wide band, CPU VRAM rows) is backed up, drawn, captured and rolled
  back; writes outside it are journaled and restored, or refused.

The presenter keeps two generations of images (the game's own frame plus
one image per pass phase), promotes one when the flip-aware source sees the
display flip to its rect, and shows the newest image at each output
deadline's phase, crossfading across gaps when passes were shed. Presents
that fall due while passes run are made between them. The plan predicts the
output deadlines of the coming frame and sheds passes to fit a host-time
budget learnt from the presenter's idle time (PSX_RENDER_PASS_BUDGET).

PSX_MOD_FRAME_INTERPOLATION_HOLD repeats the newest frame where no pass
image applies, so a pass-driven title never shows anything later than stock.

Default off: nothing runs unless a plugin calls the API, and the plan
refuses in netplay, rollback, rewind, turbo, self-check resimulation, while
suspended (FMV) or without GL flip-aware interpolation. Pass writes are kept
out of frame_fingerprint. Debug: render_pass_stats, render_pass_dump,
PSX_RENDER_PASS_VERIFY=1 (state + VRAM hashes around every pass).

The freeze API lives in the runtime-only psx_cycle_freeze.h. psx_cycles.h is
part of the overlay codegen hash and stays byte-identical, so titles that
never use passes keep their overlay caches and savestates.

Tests: render_pass_plan_test (deadline-exact phases per rate, shedding,
selection), render_pass_freeze_test (10^6 frozen cycles, exact restore,
watchdog), render_pass_guards (sandbox choke points; the codegen-hashed headers stay
free of the pass API).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-28 21:02:47 -07:00
Shokunin fb832a9563 FLIP source: test the new-frame decision; guard its wiring
interp_capture's FLIP decision moves into frame_flip_is_new_frame()
(frame_interpolation.c), unit-tested in frame_interpolation_schedule_test.
A new source guard, frame_interpolation_flip_source (recompiler ctest),
pins what no unit test reaches: main.cpp hands the session's source to the
renderer at every session start, right after its interpolation settings;
interp_capture feeds the origin and the redraw test to the decision and the
tracker and returns before the copy on a duplicate; both present paths pass
the display origin and present_dirty_test; a source change restarts the
history. Deleting the hand-off, or never returning on a duplicate, now fails
the guard (both passed every test before).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-28 21:02:43 -07:00
Shokunin 5ffd57d7f3 Flip-aware frame-interpolation source
psx_mod_set_frame_interpolation_source(PSX_MOD_FRAME_SOURCE_FLIP) makes the
OpenGL presenter rotate its blend history only when the guest really flips
(the displayed VRAM origin moves or the displayed rect is redrawn) and spread
one crossfade over the measured flip period. A game that flips every second
VBlank (R4 races) used to blend for one VBlank and hold for the next; it now
blends across its whole frame.

VBLANK stays the default. reset_mod_owned_presentation() puts it back at
every session start (first boot and the lobby rematch), next to the blend
mode, so titles that never call the setter keep today's code path and a
netplay session never inherits it. begin() is begin_phase(0, 1) and stays
bit-identical (test). gl_interp reports the source, the flip period,
captures and duplicate VBlanks.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-28 21:02:43 -07:00
Shokunin a87277bdad Reset mod-owned presentation state at every session start
The lobby rematch is the only in-process second session: an offline
session ends the process, and only a netplay match launched from the
lobby soft-returns (netplay_soft_exit -> psx_request_return_to_lobby).
The rematch path re-enters via goto session_reboot, below the first-boot
session block, so it reset no mod-owned state at all. The reachable leak:
a match with [netplay] local_viewport_aspect = "adaptive" leaves Fit
(g_ws_adaptive_view) on, and an offline rematch then runs adaptive
widescreen. The launcher also round-trips the match's fixed aspect
(16:9/21:9 from the local viewport) through ls.aspect_index.

reset_mod_owned_presentation() runs immediately before activation in the
first-boot session block (absorbing the existing blend reset) and in the
rematch path after its commit or netplay clear. Every call clears Fit, the
world and retained scene predicates, the adaptive backdrop preload, bezel
artwork, the blend mode and native VBlank pacing. Later calls also restore
vsync, frame interpolation and its rate, and automatic FMV skipping to
their first-session values, and clear the 8 MiB RAM request (memory_init()
re-latches it at session_reboot) and the texture-bank resolver and
batching flag. Netplay clears the plan, so no plugin has activated before
a rematch; everything past Fit is defensive. The renderer and fixed aspect
are launcher controls and process-lifetime allocations are left alone
(documented in MOD_PACKAGES.md).

The first-call capture lives in mod_session_baseline.h: its first call
records the pre-activation values (settings.toml, PSX_VSYNC, launcher) and
writes nothing back, so the first session, and every run that never
soft-returns, is unchanged. A static_assert keeps the restore honest: it
is only valid while interpolation and Skip FMVs have no launcher control.
Function-entry hooks need nothing here: the commit or netplay clear
empties the hook table and only activation rebuilds it.

The rematch path also re-applies the Settings aspect clamp (4:3 while
widescreen is mod-owned) before apply_netplay_local_viewport_aspect, so a
netplay rematch still gets its local viewport. The first-boot path keeps
the launcher/lobby aspect as before.

Not changed here: the rematch path still skips activation and the
controller, load and disc-speed resets of the first-boot block, so an
offline rematch with mods enabled applies the plan's patches and runs its
VBlank callbacks without activation.

Tests: mod_session_baseline_test (new, CTest) drives the first-call
capture and later restore with vsync on and off; it fails if the first
call writes anything. test_mod_owned_display_controls.py guards the
reset list, both call sites, reset-before-activation on the rematch path
and the rematch 4:3 re-clamp.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-28 16:26:33 -07:00
Matthew Stanley 78534deff4 mods: [runtime] hide_hidden_mod_features opts the launcher into never showing hidden features
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-26 16:41:47 -07:00
Matt Stanley 68d77ed6a9 Merge pull request #404 from RetroPortingToolKit/fix/vblank-follows-video-mode
runtime: VBlank rate follows the GPU video mode, not the disc region
2026-09-26 16:03:47 -07:00
Matthew Stanley f51617bb7d runtime: VBlank rate follows the GPU video mode (GP1(08h) bit 3), not the disc region
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-26 15:38:21 -07:00
Matthew Stanley c547f3b967 mods: implicit cross-package feature requirements ([[requirement]], format 7)
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-26 13:58:16 -07:00
Matthew Stanley 141eb39002 mods: let titles exclude framework builtins with EXCLUDE_BUILTIN_MODS
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-26 12:11:39 -07:00
Matt Stanley 0487e0cb81 Merge pull request #398 from RetroPortingToolKit/feat/8mb-ram-opt-in
Opt-in 8 MB main RAM
2026-09-26 10:04:39 -07:00
Matthew Stanley 0238117450 runtime: keep RAM-mirror PCs architectural; fold only bytes, through one live mask
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-26 08:03:57 -07:00
Matthew Stanley 18e3030440 savestate: validate every section before applying any; header records the live RAM size
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-26 08:03:39 -07:00
Matthew Stanley 199cfe01bc mods: flat function-entry hook table built at activation; interpreter skips it when empty
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-26 07:34:20 -07:00
Matthew Stanley c564ccd1f1 runtime: route every RAM consumer through one live 2/8 MiB geometry
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-26 06:31:33 -07:00
Matthew Stanley fa951645b4 runtime: add opt-in 8 MB main RAM mod
Adapt the 8 MB RAM work from the rbengine branch into a master-targeted change. The builtin package is disabled by default, activation requests expanded RAM before memory init, and runtime/state/digest/dispatch paths respect the live RAM map.
2026-09-26 06:02:23 -07:00
Matthew Stanley 41a76a72d8 mods: resolve function-entry plugins and run them only for the active plan
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-26 00:27:12 -07:00
Matthew Stanley f9109e21c6 Resolve relative bezel artwork paths against the exe directory
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-25 22:27:47 -07:00
Alex Vanderveen b5ef7b86d9 netplay: take the scheduler, input history and hash-confirm from recomp-net
recomp-net now carries the peer-facing rollback modules that used to live in
retcomm-rbengine (RetroPortingToolKit/recomp-net#14). Switch the MotK shims and
psx_netplay_sched.c from rbe_sched_* / rbe_ih_* / rbe_hc_* /
rbe_rb_peer_post_tip_ok to their rnet_* names and recomp_net/ headers, and bump
lib/recomp-net to c2338c6.

The netplay_* / np_sched_* surface the rest of the runtime calls is unchanged.
The snap ring and rbe_mono_ms still come from retcomm-rbengine, which stays at
a7b9850 for now; the three moved-module unit tests link recomp_net directly
instead of reaching it through rbengine. RBE_RB_* env knobs keep their names.

Checked with PSX_NETPLAY=ON: psx-runtime links and the netplay tests pass
against both the current rbengine and the split one (rbengine
refactor/launcher-core), and the binary's 33 scheduler / history /
hash-confirm functions now resolve to rnet_* where they were rbe_*.
lobby_chat_ring_test does not compile on master either (chat_push arity) and
is untouched here.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-24 22:06:27 -04:00
Matt Stanley dc7a4c1084 Merge pull request #389 from RetroPortingToolKit/fix/cue-pregap
Honour cue PREGAP/POSTGAP in the BIN/CUE mount (fixes #388)
2026-09-24 15:42:52 -07:00
Matt Stanley 9e9ec7b401 Merge pull request #383 from x6568tank/feat/mid-session-disc-change
Mount a different disc while the game runs
2026-09-24 15:15:43 -07:00
Matthew Stanley eec71b9787 fix: open the game window at a normal size instead of maximised
Default = largest multiple of 240 lines within 2/3 of the usable height;
an explicit window_width is still honoured.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-24 14:42:12 -07:00
Matthew Stanley 0e75a37f7c debug: record immediate CD responses in the command history ring
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-24 14:38:03 -07:00
Matthew Stanley e09980e6cd fix: honour cue PREGAP/POSTGAP in the BIN/CUE mount
Gaps the dump does not store were dropped, so every later track (and GetTD)
sat 150 sectors early; games that seek via GetTD landed in the previous track.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-24 14:38:03 -07:00
Matthew Stanley c68bf6e085 Merge current master while preserving Tomba adaptive renderer 2026-09-19 16:23:00 -07:00
Matthew Stanley fa435a4a0c render: add uncapped adaptive viewport and stable world classification 2026-09-19 16:19:23 -07:00
x6568tank 7c99a88565 feat: mount a different disc while the game runs
The runtime mounts one disc image at startup. No code path changes the
mounted image after that. Some multi-disc games prompt for a disc
change during play and then poll the drive. That poll never succeeds.
The CD-reinsert path reopens the same image path, so it cannot mount
the other disc.

cdrom_disc_select() closes the current image and opens another roster
entry, inside the existing lid window. cdrom_lid_media_ready() returns
0 for the whole window, so the guest cannot read the image until the
window ends. The existing timed close then ends the window.

cdrom_init() is not called. It also resets warm-route, trace and timing
state, which would discard a running session. cdrom_disc_select()
resets the sector buffers, the seek position, and the warm-route
arming. Registered warm routes are configuration and are not reset.

begin_tray_open_cycle() now holds the tray-open code, moved out of
debug_force_cd_reinsert(). Both paths call it.

Add a disc_select debug command. It returns the roster and mounts entry
n when n is given. It also returns the sector count and track count of
the mounted image, which confirms that the reader opened another image.

Tested on Ace Combat 3: Electrosphere (SLPS-02020 / SLPS-02021). Boot
disc 2 with no disc-2 save. The game prompts for disc 1. At that prompt
the CD read count is static at 2955 and frames run at 60.5 Hz, so the
drive is idle. disc_select n=1 mounts disc 1. The game resumes and
plays its first cutscene. Reads restart within two seconds and pass
19971. The read addresses change to disc-1 values. The frame rate does
not drop.

Co-Authored-By: Claude <noreply@anthropic.com>
2026-09-18 11:10:00 -04:00
Pegasus 77a8480363 Read disc region from the actual SYSTEM.CNF directory entry
Prefer the ISO9660 boot file over the bounded raw-image scan. Biohazard stores SYSTEM.CNF outside that scan, leaving fresh builds at the default SCEA response. Add raw and cooked late-file regressions with an early decoy serial. The full-profile prefix again matches the retained native baseline through 5999 returns; the independent-source frontier remains return 464.

(cherry picked from commit 82c3de13ef)
2026-09-14 17:26:33 +03:00
Pegasus 5e23de8393 feat: add PS1 conformance harness and fix GTE fidelity
(cherry picked from commit 98d617b5f3)
2026-09-14 17:26:31 +03:00
Matthew Stanley 8b689140dd Add opt-in world scene classification and immutable terrain batching 2026-09-13 21:06:58 -07:00
Matthew Stanley b4d41b173c Merge current master and preserve both runtime regression test groups 2026-09-13 19:40:33 -07:00
Matthew Stanley f2352e3d32 Keep retained scene aspect until the next displayed buffer flip 2026-09-13 19:27:03 -07:00
Matthew Stanley e3beb365ba Add opt-in native-wide presentation hold for retained loading scenes 2026-09-13 19:11:21 -07:00
Matthew Stanley 9037e7bd23 Add opt-in retained texture banks and enhancement memory snapshots 2026-09-13 16:50:26 -07:00
Matt Stanley d4c45adf62 fix(sio): remove title-specific card IRQ repair and opt-in (#362) 2026-09-13 16:33:46 -07:00
Aliet Exposito Garcia 72b3ead892 feat(OpenGL renderer): add post presentation gamma control
Some titles and enhancement mods/plugins might require display level gamma correction to improve shadow detail and overall visibility without altering guest rendering state. This introduces a public gamma adjustment interface for the OpenGL renderer via `gl_renderer_set_post_gamma`, that enables external plugins to adjust the display curve cleanly at runtime.

This adjustment applies exclusively to game content and temporal interpolation passes while leaving host interface elements, bezels, and previously composed frames untouched. Modifying the gamma setting immediately invalidates the presentation buffer so that changes become visible on screen without requiring new video memory writes from the guest system.
2026-09-13 01:30:10 -04:00
Alex Vanderveen b9ca600778 netplay: block list, account keys, list scope and automatch for the launcher
Brings the PSX runtime level with what recomp-ui's netplay pages now ask a
host for, and with the SNES runner that already answers them
(snes_lobby_client.c / snes_host_lobby.c):

- Chat lines, seat rows and players-online rows carry the server's opaque
  account key, so the launcher's ignore/block list survives a rename.
- psx_lobby_set_blocks pushes that list to the server as `set_blocks`, since
  refusing to pair or seat the two together is the server's job; recomp-ui
  re-sends it on every reconnect.
- list_scope_set: a LAN player no longer sees online rooms they have no
  connection for, and an online player no longer sees their own LAN rows.
- Automatch: rulesets discovery, the relay latency probe (14-byte LE frame,
  type 200 -> 201, nonce-matched), queue with the disc fingerprint, the
  accept gate with a locally counted deadline, requeue/cancel/cooldown, and
  claiming automatch's `error` codes only while a ticket is in flight.
  Leaving an automatch room after the match: it is the server's room, has
  no host to rematch with, and holding the seat blocks the next ticket.
- Account: init the auth client once per URL rather than every pump (the
  login worker reads the host), anchor the device key to the executable
  directory, and publish the signed-in handle as the lobby display name.

mods_enabled is asserted false on PSX: every netplay launch clears the mod
plan or refuses to start, and the caps a match runs are the ruleset's.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FPXfGGhBBBxQPcEzaMsauF
2026-09-12 19:39:09 -04:00
Alex Vanderveen 615d35fe22 Merge remote-tracking branch 'origin/master' into feat/lobby-parity
# Conflicts:
#	tools/new_project_layout/project_studio/readme_metrics.py
2026-09-12 19:30:47 -04:00
Alex Vanderveen fddc8b8516 netplay: report chat lines for moderation, and pin recomp-net for it
PsxLobbyChatMsg gains the server's `mid` for a line, taken off `chat` and
`server_chat`, and psx_lobby_report_chat hands a list of them to
rnet_chat_report_build. The frame carries ids and never the text, so a
report cannot fabricate what somebody said. Same eight lines as the SNES
copy; what a report contains lives in recomp-net.

lib/recomp-net -> 859ba28 (support chat reporting), which is also where
rnet_account_set_secret_path comes from.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FPXfGGhBBBxQPcEzaMsauF
2026-09-12 19:29:57 -04:00
Matthew Stanley 9576c6323f Refresh combined BIOS and dispatch validation against latest master 2026-09-11 23:39:47 -07:00
Matthew Stanley 63b205df78 Index immutable resident dispatch keys and clarify owner telemetry 2026-09-11 23:39:46 -07:00
Matthew Stanley b4ea4c37e9 Expand opt-in DMA arenas without aliasing CPU BIOS addresses 2026-09-11 23:05:07 -07:00
Matthew Stanley c5390e4265 Merge kernel patch ranges PR #346 for combined validation 2026-09-11 22:53:07 -07:00
Matthew Stanley 9550b3e579 Merge BIOS setup-host PR #343 for combined validation 2026-09-11 22:53:05 -07:00
Matthew Stanley 06a93dc8aa Forward widescreen hooks in native overlays and verify fallback intervals 2026-09-11 22:28:03 -07:00
Kevin 3cbe6c1cde kernel-bless: publish install-slot ranges so patched BIOS bodies run native
The BIOS exception handler ran interpreted for the life of every process,
1.22 billion instructions and 44.6% of all interpreted work in Breath of
Fire III, even though it is compiled and even though the stub that
unblessed it sat at exactly the address bios/SCPH1001.toml already
declared as an install slot. Two mechanisms existed and did not compose:
the emitter hooked the declared slot PC, while the runtime's bless
verifier memcmp'd the whole body including that slot, so the body was
MISMATCH forever and native code never reached the hook.

Three parts, none of which pays off alone:

1. Publish the declared ranges to the runtime. The emitter emits a
   PsxKernelPatchRange table next to the kernel body table and routes it
   through the backend descriptor; the bless verifier compares a body in
   segments that skip them. CLEAN now means "every byte outside every
   declared range still matches ROM", which is the claim the native code
   actually depends on.

2. Generalise the slot model to what the patches are. The old model
   assumed a 4-word lui/addiu/jalr/nop stub written over ROM zeros and
   fired on `word != 0`. Measured against both images, only one of five
   observed shapes fits: patchers also plant a `jr` over real ROM
   instructions, rewrite an 11-word prologue and insert an `mfc0 Cause`,
   and NOP out a driver routine. A slot is now a range with a length and
   an explicit `resume` (jalr / fallthrough / none), detected by
   comparing every word against its ROM-baked value.

3. Hand back from the interpreter at the range end. Kernel page 0 is
   permanently dirty, because the handler saves registers there on every
   exception, so straight-line interpretation would run the whole
   function after the patch. The emitter registers the resume PC as a
   continuation key and dirty_ram_interp surfaces there.

A PC inside a declared range must never be a native dispatch key: the
compiled bytes there are not what executes. Seven pre-existing
jal-return continuations violated that and wedged the boot at frame 0 in
an infinite dispatch loop (OpenBIOS RAM 0x357C). The emitter now drops
continuation keys inside a range so dispatch misses through to the
interpreter, and refuses to emit if a range covers a function entry,
which would silently remove a callable function instead.

Both profiles declare their measured ranges, and SCPH1001.toml finally
pins [program.image] sha256 to v2.2 (CRC32 37157331) so a v2.0 dump
refuses to generate rather than producing phantom discovery gaps.

Measured on Breath of Fire III (SLPS-00990, Psy-Q SDK 3.70), headless,
matched frames, PSX_KERNEL_PATCH_RANGES=0 for the OFF side:

                      OpenBIOS            SCPH-1001 v2.2
  bless mismatch      21 -> 0             74 -> 0
  kernel bodies       -87.7%/frame        -97.8%/frame
  all interp insns    -42.6%/frame        -94.2%/frame

The residual kernel-body work is exactly declared-words x entries on
every range, so nothing leaks past the hook. The A0/B0/C0 vector
trampolines are unchanged (+0.2%, noise): the profile excludes them by
design and they are a separate job. Card read traces are byte-identical
across the A/B on both images, all 32 entries, which exercises the two
ranges that replace the kernel's card handler.

Rule 18 holds throughout: the guest's patched instructions still execute
as written on the dirty-RAM interpreter. Only the code around them
changes backend. Nothing is synthesised.

Tests: runtime/tests/test_kernel_patch_ranges.c (new, the verifier's
accept/reject behaviour and the hand-back predicate) and the install-slot
range invariants in recompiler/tests/bios_address_model_test.cpp.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-11 16:38:34 -04:00
Matthew Stanley 2113defcfc Fix overlay Clang exports, PGO, and scaffold cache 2026-09-10 17:23:03 -07:00