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Expose infrastructure side-buffer owner lane

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This commit is contained in:
Jan Petykiewicz 2026-04-18 13:37:03 -07:00
commit cf2e6cb6ad
5 changed files with 41 additions and 8 deletions
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37
crates/rrt-runtime/src/smp.rs
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@ -1825,6 +1825,10 @@ pub struct SmpSavePlacedStructureDynamicSideBufferProbe {
pub live_id_bound_hex: String,
pub live_record_count: u32,
pub live_record_count_hex: String,
pub owner_shared_dword: u32,
pub owner_shared_dword_hex: String,
pub owner_shared_dword_relative_offset: usize,
pub owner_shared_dword_matches_first_compact_prefix_leading_dword: bool,
pub prefix_leading_dword: u32,
pub prefix_leading_dword_hex: String,
pub prefix_trailing_word: u16,
@ -4421,8 +4425,10 @@ pub fn load_save_slice_from_report(
if let Some(probe) = &placed_structure_dynamic_side_buffer_probe {
let dominant_pattern = probe.compact_prefix_pattern_summaries.first();
notes.push(format!(
"Raw save also exposes the separate placed-structure dynamic-side-buffer candidate 0x38a5/0x38a6/0x38a7: live_record_count={}, first compact prefix=({},{},{}), first embedded names={:?}/{:?}, embedded 0x55f1 row count={}, unique compact prefix patterns={}, 0x55f3-leading rows={}, dominant compact pattern={}/{}/{} x{}.",
"Raw save also exposes the separate placed-structure dynamic-side-buffer candidate 0x38a5/0x38a6/0x38a7: live_record_count={}, owner-shared 0x38a6 dword={} at relative offset 0x{:x}, first compact prefix=({},{},{}), first embedded names={:?}/{:?}, embedded 0x55f1 row count={}, unique compact prefix patterns={}, 0x55f3-leading rows={}, dominant compact pattern={}/{}/{} x{}.",
probe.live_record_count,
probe.owner_shared_dword_hex,
probe.owner_shared_dword_relative_offset,
probe.prefix_leading_dword_hex,
probe.prefix_trailing_word_hex,
probe.prefix_separator_byte_hex,
@ -4442,6 +4448,12 @@ pub fn load_save_slice_from_report(
.unwrap_or("0x00"),
dominant_pattern.map(|pattern| pattern.count).unwrap_or_default()
));
if probe.owner_shared_dword_matches_first_compact_prefix_leading_dword {
notes.push(
"Direct disassembly now shows 0x00493be0 consuming one shared 0x38a6 owner-local dword before iterating records; the first compact-prefix leading dword currently reuses that same lane."
.to_string(),
);
}
}
if let Some(roster) = &report.save_company_roster_probe {
notes.push(format!(
@ -11810,9 +11822,11 @@ fn parse_save_placed_structure_dynamic_side_buffer_probe(
if prefix_payload.len() < 7 {
continue;
}
let Some(prefix_leading_dword) = read_u32_at(prefix_payload, 0) else {
let Some(owner_shared_dword) = read_u32_at(prefix_payload, 0) else {
continue;
};
let owner_shared_dword_relative_offset = 0usize;
let prefix_leading_dword = owner_shared_dword;
let Some(prefix_trailing_word) = read_u16_at(prefix_payload, 4) else {
continue;
};
@ -12050,6 +12064,11 @@ fn parse_save_placed_structure_dynamic_side_buffer_probe(
live_id_bound_hex: format!("0x{:08x}", summary.live_id_bound),
live_record_count: summary.live_record_count,
live_record_count_hex: format!("0x{:08x}", summary.live_record_count),
owner_shared_dword,
owner_shared_dword_hex: format!("0x{owner_shared_dword:08x}"),
owner_shared_dword_relative_offset,
owner_shared_dword_matches_first_compact_prefix_leading_dword:
owner_shared_dword == prefix_leading_dword,
prefix_leading_dword,
prefix_leading_dword_hex: format!("0x{prefix_leading_dword:08x}"),
prefix_trailing_word,
@ -12069,6 +12088,9 @@ fn parse_save_placed_structure_dynamic_side_buffer_probe(
name_pair_summaries,
evidence: vec![
"exact little-endian u32 tag family 0x38a5/0x38a6/0x38a7 appears as a separate save-side tagged collection on grounded saves".to_string(),
format!(
"direct disassembly now shows 0x00493be0 consuming shared owner-local dword 0x{owner_shared_dword:08x} from the 0x38a6 stream before iterating live infrastructure records"
),
"records payload begins with a compact 6-byte prefix plus one separator byte before the first embedded 0x55f1 name row".to_string(),
"first embedded 0x55f1 row decodes with placed-structure-style dual names, which makes this the strongest current candidate for the separate placed-structure dynamic side-buffer owner seam".to_string(),
format!(
@ -20163,6 +20185,9 @@ mod tests {
assert_eq!(probe.direct_record_stride, 0x06);
assert_eq!(probe.live_id_bound, 1000);
assert_eq!(probe.live_record_count, 388);
assert_eq!(probe.owner_shared_dword_hex, "0x0005d368");
assert_eq!(probe.owner_shared_dword_relative_offset, 0);
assert!(probe.owner_shared_dword_matches_first_compact_prefix_leading_dword);
assert_eq!(probe.prefix_leading_dword_hex, "0x0005d368");
assert_eq!(probe.prefix_trailing_word_hex, "0x0001");
assert_eq!(probe.prefix_separator_byte_hex, "0xff");
@ -20314,6 +20339,10 @@ mod tests {
live_id_bound_hex: "0x000003e8".to_string(),
live_record_count: 10,
live_record_count_hex: "0x0000000a".to_string(),
owner_shared_dword: 0,
owner_shared_dword_hex: "0x00000000".to_string(),
owner_shared_dword_relative_offset: 0,
owner_shared_dword_matches_first_compact_prefix_leading_dword: true,
prefix_leading_dword: 0,
prefix_leading_dword_hex: "0x00000000".to_string(),
prefix_trailing_word: 1,
@ -21962,6 +21991,10 @@ mod tests {
live_id_bound_hex: "0x00000f19".to_string(),
live_record_count: 3865,
live_record_count_hex: "0x00000f19".to_string(),
owner_shared_dword: 0xff000000,
owner_shared_dword_hex: "0xff000000".to_string(),
owner_shared_dword_relative_offset: 0,
owner_shared_dword_matches_first_compact_prefix_leading_dword: true,
prefix_leading_dword: 0xff000000,
prefix_leading_dword_hex: "0xff000000".to_string(),
prefix_trailing_word: 1,