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Implement native layout-3 save restoration

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gamer147
2026-07-24 16:23:01 -04:00
parent 3b63c42826
commit 3ace5371e6
21 changed files with 1659 additions and 81 deletions
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9
vm-map/opcodes.toml
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@@ -1724,11 +1724,12 @@ abi_source = "kelebek+decode-validated"
name = "continue-save-load-stack-restore"
category = "control"
summary = "() - during serialized save restoration, replace the current frame PC with its saved resume/call target and advance through the saved script-context stack; otherwise a no-op."
details = "Layout 3 frame d259 indexes SYS4 T1 read-message reset sites, d260 indexes T2 call-script sites, and the saved local return stack indexes T3 local-call sites. Port status (2026-07-24): the active path reconstructs the saved recursive frame chain and resumes the terminal frame at its T1 boundary."
noop_headless = false
source = "investigation"
confidence = "high"
depends_on = []
evidence = "Ghidra /v2: op_0xae_continue_save_load_stack_restore@0x416790 first tests ctx+0x53d24 (set by save_data_deserialize_and_begin_restore@0x40fd10). When clear it returns. When set, it selects the serialized frame layout through set:SaveVersion1/2, restores the current PC from that layout's saved return/call target, advances through contexts with FUN_0040f2d0, and clears the restore flag on reaching the saved terminal context. Its 305 corpus sites overwhelmingly follow coroutine-resume/call boundaries, which provide the rendezvous points used while reconstructing the stack."
evidence = "Ghidra /v2: op_0xae_continue_save_load_stack_restore@0x416790 first tests ctx+0x53d24 (set by save_data_deserialize_and_begin_restore@0x40fd10). When clear it returns. When set, it selects the serialized frame layout through set:SaveVersion1/2, restores the current PC from that layout's saved return/call target, advances through contexts with script_frame_restore_saved_layout@0x40f2d0, and clears the restore flag on reaching the saved terminal context. Its 305 corpus sites overwhelmingly follow coroutine-resume/call boundaries, which provide the rendezvous points used while reconstructing the stack."
[[opcode]]
op = 0xb4
@@ -3384,7 +3385,7 @@ abi_source = "kelebek+decode-validated"
name = "save-numbered-slot"
category = "control"
summary = "(status_out)(slot) - write the active native VM/session state to `SAVE%02d.DAT`. The file is truncated/replaced in place after any compatibility-overwrite prompt; successful serialization also flushes shared `SAVE.DAT`/`RT.DAT`."
details = "Uses `set:SaveVersion1` and `set:SaveVersion2` to choose the numbered payload layout. Status is 0 on success and 1 on refusal, open/create failure, or serializer failure. Numbered `.DAT` files do not use the shared profile's temp/backup replacement scheme."
details = "Uses `set:SaveVersion1` and `set:SaveVersion2` to choose the numbered payload layout. Status is 0 on success and 1 on refusal, open/create failure, or serializer failure. Numbered `.DAT` files do not use the shared profile's temp/backup replacement scheme. Port status (2026-07-24): layout 3 writes fixed state, six native banks, T1/T2/T3 frame records, surface/resource reload state, retained gfx records, the appended history tail, and then flushes shared SAVE.DAT/RT.DAT."
noop_headless = false
source = "investigation"
confidence = "high"
@@ -3411,7 +3412,7 @@ abi_source = "kelebek"
name = "load-numbered-slot-data-only"
category = "control"
summary = "(status_out)(slot) - decode `SAVE%02d.DAT` without restoring the active script-frame chain or text history."
details = "This is the data-only companion to full-resume opcode 0x1a1. It selects the configured SaveVersion layout and restores serialized state with both runtime/history restore flags clear. Himegari's shipped script corpus does not call it, but it belongs to the shared SYS4 persistence ABI."
details = "This is the data-only companion to full-resume opcode 0x1a1. It selects the configured SaveVersion layout and restores serialized state with both runtime/history restore flags clear. Himegari's shipped script corpus does not call it, but it belongs to the shared SYS4 persistence ABI. Port status (2026-07-24): implemented for layout 3 through the same bank/resource/gfx decoder without activating history or frame restoration."
noop_headless = false
source = "investigation"
confidence = "high"
@@ -3500,7 +3501,7 @@ abi_source = "kelebek+decode-validated"
name = "load-numbered-slot-and-resume"
category = "control"
summary = "(status_out)(slot) - fully load `SAVE%02d.DAT`, including saved script frames and text history, then resume through `CALLBACK_LOAD.BIN` and opcode 0xae."
details = "The caller pre-seeds status to zero. A missing/open failure writes 1; success starts the asynchronous native stack-restoration rendezvous and does not overwrite that zero. This is the ordinary load-game path, unlike data-only opcode 0x19f."
details = "The caller pre-seeds status to zero. A missing/open failure writes 1; success starts the asynchronous native stack-restoration rendezvous and does not overwrite that zero. This is the ordinary load-game path, unlike data-only opcode 0x19f. Port status (2026-07-24): layout 3 restores banks, history, surfaces/resources, and retained gfx, unwinds the obsolete managed call chain, then reconstructs saved frames through opcode 0xae."
noop_headless = false
source = "investigation"
confidence = "high"