mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-26 10:19:47 -04:00
Matthew Stanley
72 lines
3.1 KiB
C
72 lines
3.1 KiB
C
#ifndef PSX_NETPLAY_STATE_DIGEST_H
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#define PSX_NETPLAY_STATE_DIGEST_H
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/*
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* Compact state digests for rollback hash_confirm / FRAME_COMMIT / POST.
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*
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* Core = CPU + RAM + IRQ/timers/clock + dirty bitmap — invent hash_confirm.
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* AV = GPU regs + VRAM — baseline/POST also require this (GL/VK readback forks
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* VRAM while core still matches; pin zlib sizes were the symptom).
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* CDROM digest: live dig audit + folded into baseline dig_c with aux
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* (matched core/av/aux with divergent CD was loading doomed Replay snaps).
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* Baseline dig_c (ext) also folds scratchpad + DMA + SIO — pin zlib skew
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* with matched core/av/aux/cd was ungated bus state.
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* Master = crc(core, cd) for combined logging only.
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*/
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#include <stdint.h>
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#include "cpu_state.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Partition CRCs folded into netplay_core_digest — for first-diverge diags. */
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typedef struct NetplayCoreParts {
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uint32_t cpu; /* gpr + pc + hi/lo + status/cause/epc + GTE */
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uint32_t clock_irq; /* cycle count + i_stat/i_mask */
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uint32_t timers; /* timer snapshot */
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uint32_t ram; /* 2 MiB main RAM */
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uint32_t dirty; /* dirty-RAM bitmap words */
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uint32_t mod; /* trusted profile's canonical host gameplay state */
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uint32_t core; /* full core (same as netplay_core_digest) */
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} NetplayCoreParts;
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uint32_t netplay_core_digest(const CPUState* cpu);
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void netplay_core_digest_parts(const CPUState* cpu, NetplayCoreParts* out);
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uint32_t netplay_master_digest(const CPUState* cpu);
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uint32_t netplay_cdrom_digest(void);
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uint32_t netplay_av_digest(void); /* GPU + VRAM */
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/* SPU regs+RAM and MDEC — in snaps but not core/av; pin zlib skew with matched
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* core/av was this. Baseline dig_c / live dig carry aux.
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* MDEC snap age is guest-cycle relative (not host s_frame_count).
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* PSX_RB_SPU_DIG_REGS_ONLY=1: netplay_spu_digest skips 512 KiB SPU RAM (A/B
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* whether Win↔Linux aux forks in reverb/capture RAM vs voice regs). */
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uint32_t netplay_spu_regs_digest(void); /* regs/voices/tail only — no SPU RAM */
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uint32_t netplay_spu_digest(void);
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uint32_t netplay_mdec_digest(void);
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uint32_t netplay_aux_digest(void); /* crc(spu, mdec) */
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uint32_t netplay_spad_digest(void); /* 1 KiB scratchpad */
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uint32_t netplay_dma_digest(void);
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uint32_t netplay_sio_digest(void);
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/* SIO snapshot section CRCs — which subsystem forked a resim (a single SIO
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* digest could not say). Sections mirror sio_snap_emit order.
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* netplay_sio_digest / baseline_ext fold only through fsm_pace (not meta). */
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typedef struct NetplaySioParts {
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uint32_t regs; /* tx/rx/stat/mode/ctrl/baud */
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uint32_t pads; /* pad_analog/connected/state/response/config/type_req */
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uint32_t mc; /* memcard working vars + both slot FSMs + active_device */
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uint32_t pace; /* shift/ack/irq countdown — guest-visible timing */
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uint32_t meta; /* irq source/slot/delay/byte_seq (host audit only) */
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} NetplaySioParts;
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void netplay_sio_digest_parts(NetplaySioParts *out);
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/* Baseline dig_c: crc(aux, cd, spad, dma, sio). Refuse doomed Replay. */
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uint32_t netplay_baseline_ext_digest(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* PSX_NETPLAY_STATE_DIGEST_H */
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