ITERATE-2.V: scheduler priority aging closes 18-day AUDIT-049 wedge
Priority aging in xenia-cpu/scheduler.rs:pick_runnable
(effective_priority = base + age_bonus(now_round - last_run_round),
capped at +31, AGING_ROUNDS_PER_BONUS=1). Strict-priority was parking
priority=0 threads behind CPU-bound priority=15 audio mixer
(sub_824D1328 guest spinwait at PC=0x824d1404 on CPU5). Aging
eventually picks the starved thread, breaking the producer-consumer
cycle that caused 5-tid wedge at PC=0x824ac578 since AUDIT-049 (10 May).
Cascade observed: tid=13 clean exit; events 121K -> 13M (107x); last
host_ns 767ms -> 51,011ms (66x); 8 new threads spawn; VdSwap 1 -> 2.
Complete two-day iterate sequence (2026-05-27 -> 2026-05-28):
- 2.F: VdSwap drain timeout 900ms -> 1ms (xenia-gpu/handle.rs); 876x
perf win on VdSwap kernel callback
- 2.H: vA0000000 physical heap bucket added (state.rs, exports.rs);
ctx_ptrs now in 0xA0000000-0xBFFFFFFF range matching canary
- 2.L: Phase-A diff harness categorized [return_value mismatch],
[status mismatch], [args_resolved.path mismatch] tags
(tools/diff-events/diff_events.py); closes reading-error #41
(silent test-harness state leak invalidating trace diffs)
- 2.M: always-on exit-thread-state.json sibling to Phase-A JSONL
(event_log.rs + xenia-app/main.rs); closes reading-error #42
(Phase-A blind to blocked-forever waits)
- 2.Q: signal.match kernel instrumentation in NtSetEvent /
NtReleaseSemaphore / KeSetEvent / KeReleaseSemaphore
(exports.rs); emits target_handle + waiter_count + waiter_tids
- 2.T: wake.requested kernel instrumentation in wake_eligible_waiters
(exports.rs); emits target_tid + transition + new_state
- 2.V: scheduler priority aging (xenia-cpu/scheduler.rs) [keystone]
Plus accumulated WIP from earlier May (contention_manifest,
phase_b_snapshot, xam/xaudio enhancements, analysis db, xex loader,
xenia-app main loop, etc.). Audit-runs/ artifacts remain untracked
per project convention.
Tests: 300 xenia-cpu / 227 xenia-kernel / 5 xenia-app / 19 xenia-path
/ 30+ smaller suites -- all PASS, 0 regressions. Determinism preserved
(2x cold runs bit-identical at 13,003,881 events post-2.V).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
MechaCat02
@@ -15,3 +15,7 @@ tracing = { workspace = true }
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metrics = { workspace = true }
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thiserror = { workspace = true }
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anyhow = { workspace = true }
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serde_json = { workspace = true }
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sha1 = { workspace = true }
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sha2 = { workspace = true }
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libc = "0.2"
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342
crates/xenia-kernel/src/contention_manifest.rs
Normal file
342
crates/xenia-kernel/src/contention_manifest.rs
Normal file
@@ -0,0 +1,342 @@
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//! Phase D Stage 3 — contention-replay manifest loader.
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//!
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//! Loads a `contention_manifest.json` produced by Stage 2's python
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//! builder (`xenia-rs/tools/diff-events/build_contention_manifest.py`)
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//! and exposes a `(tid, tid_event_idx) → Entry` lookup for
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//! `rtl_enter_critical_section` to consult.
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//!
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//! The manifest tells ours: "canary observed real contention on this
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//! `cs_ptr` at this `(tid, tid_event_idx)`." Ours's
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//! `rtl_enter_critical_section` reads the next per-tid ordinal that
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//! its `contention.observed` emit would consume and asks the manifest
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//! whether to force a park. The Stage 3 forced-park is gated on the CS
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//! actually having a live different-tid owner in guest memory at the
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//! moment — without that, forced-park would deadlock (the plan's
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//! "skip when free" branch).
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//!
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//! Lookup is O(1) via a `HashMap<(tid, idx), Entry>` behind a `Mutex`.
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//! Single-host-thread scheduler means contention on the mutex is
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//! minimal. `consume()` removes the entry on hit, so a single
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//! (tid, idx) cannot re-fire — guards against any future re-entry of
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//! `rtl_enter_critical_section` for the same ordinal.
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use std::collections::HashMap;
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use std::fs::File;
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use std::io::{self, BufReader};
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use std::path::Path;
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use std::sync::Mutex;
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/// One row of the manifest, post-deserialize.
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#[derive(Debug, Clone, PartialEq, Eq)]
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pub struct Entry {
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pub tid: u32,
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pub tid_event_idx: u64,
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/// 16-hex string (FNV-1a 64-bit). Stage-3 verifies this matches
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/// `semantic_id_shared_global(cs_ptr, object_type::CRITICAL_SECTION)`.
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pub site_sid: String,
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/// Guest VA of the `X_RTL_CRITICAL_SECTION`. Both engines see the
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/// same value (the guest manages the struct).
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pub cs_ptr: u32,
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}
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pub struct ContentionManifest {
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entries: Mutex<HashMap<(u32, u64), Entry>>,
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/// Per-tid count of `contention.observed` emits ours has fired so
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/// far in this run. Each emit shifts the per-tid event-log idx by
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/// +1 relative to canary's stream, so subsequent manifest lookups
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/// must translate ours's `peek_tid_idx` value back to canary's idx
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/// space (`ours_peek - emits_so_far`). Updated by
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/// `consume_at_peek`, which is the supported lookup entry point.
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emit_counts: Mutex<HashMap<u32, u64>>,
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/// Sum of all entries ever loaded (cap on growth: post-load lookup
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/// only). For audit logging / sanity checks.
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initial_count: usize,
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}
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impl ContentionManifest {
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/// Load a manifest from a JSON file. The file must be a
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/// well-formed `contention_manifest.json` (see Stage 2's
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/// builder). Unknown top-level fields are ignored — only `entries`
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/// is consumed.
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///
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/// Returns a friendly error string on malformed input so the caller
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/// can surface it without a `serde_json::Error` dependency creep.
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pub fn load_from_file(path: &Path) -> io::Result<Self> {
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let f = File::open(path)?;
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let reader = BufReader::new(f);
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let json: serde_json::Value = serde_json::from_reader(reader)
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.map_err(|e| io::Error::new(io::ErrorKind::InvalidData, e.to_string()))?;
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Self::load_from_json_value(&json)
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}
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pub fn load_from_str(s: &str) -> io::Result<Self> {
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let json: serde_json::Value = serde_json::from_str(s)
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.map_err(|e| io::Error::new(io::ErrorKind::InvalidData, e.to_string()))?;
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Self::load_from_json_value(&json)
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}
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fn load_from_json_value(json: &serde_json::Value) -> io::Result<Self> {
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let version = json.get("version").and_then(|v| v.as_u64()).unwrap_or(0);
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if version != 1 {
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return Err(io::Error::new(
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io::ErrorKind::InvalidData,
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format!("unsupported manifest version: {version} (expected 1)"),
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));
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}
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let arr = json.get("entries").and_then(|v| v.as_array()).ok_or_else(|| {
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io::Error::new(io::ErrorKind::InvalidData, "manifest missing `entries` array")
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})?;
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let mut map = HashMap::with_capacity(arr.len());
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for (i, entry) in arr.iter().enumerate() {
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let tid = entry
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.get("tid")
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.and_then(|v| v.as_u64())
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.ok_or_else(|| io::Error::new(
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io::ErrorKind::InvalidData,
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format!("entry {i}: missing or non-u64 `tid`"),
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))? as u32;
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let idx = entry
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.get("tid_event_idx")
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.and_then(|v| v.as_u64())
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.ok_or_else(|| io::Error::new(
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io::ErrorKind::InvalidData,
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format!("entry {i}: missing or non-u64 `tid_event_idx`"),
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))?;
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let site_sid = entry
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.get("site_sid")
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.and_then(|v| v.as_str())
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.ok_or_else(|| io::Error::new(
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io::ErrorKind::InvalidData,
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format!("entry {i}: missing or non-str `site_sid`"),
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))?
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.to_owned();
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// cs_ptr is emitted as "0xHHHHHHHH" — strip the prefix and parse.
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let cs_ptr_str = entry
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.get("cs_ptr")
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.and_then(|v| v.as_str())
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.ok_or_else(|| io::Error::new(
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io::ErrorKind::InvalidData,
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format!("entry {i}: missing or non-str `cs_ptr`"),
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))?;
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let cs_ptr = parse_hex_u32(cs_ptr_str).map_err(|e| {
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io::Error::new(
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io::ErrorKind::InvalidData,
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format!("entry {i}: cs_ptr={cs_ptr_str:?}: {e}"),
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)
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})?;
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let e = Entry { tid, tid_event_idx: idx, site_sid, cs_ptr };
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map.insert((tid, idx), e);
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}
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let initial_count = map.len();
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Ok(Self {
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entries: Mutex::new(map),
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emit_counts: Mutex::new(HashMap::new()),
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initial_count,
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})
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}
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/// Look up + REMOVE the entry for `(tid, idx)`. `None` if no entry.
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/// Removal prevents a single ordinal from re-firing the forced-park
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/// branch if `rtl_enter_critical_section` is re-entered at the same
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/// per-tid ordinal (shouldn't happen because emits are monotone,
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/// but defensive).
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pub fn consume(&self, tid: u32, idx: u64) -> Option<Entry> {
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self.entries.lock().unwrap().remove(&(tid, idx))
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}
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/// Stage 3 lookup entry point: translate ours's `peek_tid_idx`
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/// value back to canary's idx space (subtracting the count of
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/// `contention.observed` events ours has already emitted on this
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/// tid), then `consume()`. On hit, the per-tid emit counter is
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/// bumped so the next call's translation accounts for THIS emit.
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///
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/// Both halves of the bookkeeping (consume + emit-count bump) MUST
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/// happen here, before the caller actually emits, to keep the
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/// translation arithmetic consistent.
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pub fn consume_at_peek(&self, tid: u32, peek_idx: u64) -> Option<Entry> {
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let mut emits = self.emit_counts.lock().unwrap();
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let already = *emits.get(&tid).unwrap_or(&0);
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// Per-tid event log idx is monotone, so `peek_idx >= already`
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// always — but guard against underflow defensively.
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if peek_idx < already {
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return None;
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}
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let canary_idx = peek_idx - already;
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let hit = self.entries.lock().unwrap().remove(&(tid, canary_idx));
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if hit.is_some() {
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*emits.entry(tid).or_insert(0) += 1;
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}
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hit
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}
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/// Test helper: how many `contention.observed` emits we've tracked.
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#[cfg(test)]
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pub fn emit_count(&self, tid: u32) -> u64 {
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*self.emit_counts.lock().unwrap().get(&tid).unwrap_or(&0)
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}
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/// Non-destructive peek (testing only).
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pub fn peek(&self, tid: u32, idx: u64) -> Option<Entry> {
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self.entries.lock().unwrap().get(&(tid, idx)).cloned()
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}
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/// Number of entries originally loaded (constant after load).
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pub fn initial_count(&self) -> usize {
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self.initial_count
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}
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/// Number of entries still un-consumed.
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pub fn remaining_count(&self) -> usize {
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self.entries.lock().unwrap().len()
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}
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}
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fn parse_hex_u32(s: &str) -> Result<u32, String> {
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let trimmed = s.strip_prefix("0x").or_else(|| s.strip_prefix("0X")).unwrap_or(s);
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u32::from_str_radix(trimmed, 16).map_err(|e| e.to_string())
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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const MINIMAL: &str = r#"{
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"version": 1,
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"source_canary_jsonl": "/tmp/x.jsonl",
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"source_canary_sha256": "00",
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"built_at_host_unix": 0,
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"summary": {},
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"entries": [
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{"tid": 6, "tid_event_idx": 104664, "site_sid": "c26a128bf45411f7",
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"cs_ptr": "0xbc65c890", "contended": true},
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{"tid": 9, "tid_event_idx": 386, "site_sid": "c26a128bf45411f7",
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"cs_ptr": "0xbc65c890", "contended": true}
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]
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}"#;
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#[test]
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fn loads_two_entries() {
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let m = ContentionManifest::load_from_str(MINIMAL).unwrap();
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assert_eq!(m.initial_count(), 2);
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assert_eq!(m.remaining_count(), 2);
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}
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#[test]
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fn consume_returns_entry_and_decrements() {
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let m = ContentionManifest::load_from_str(MINIMAL).unwrap();
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let e = m.consume(6, 104664).unwrap();
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assert_eq!(e.cs_ptr, 0xbc65c890);
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assert_eq!(e.site_sid, "c26a128bf45411f7");
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assert_eq!(m.remaining_count(), 1);
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// Second consume of the same key yields None.
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assert!(m.consume(6, 104664).is_none());
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}
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#[test]
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fn miss_returns_none() {
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let m = ContentionManifest::load_from_str(MINIMAL).unwrap();
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assert!(m.consume(99, 99).is_none());
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assert!(m.consume(6, 999999).is_none());
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}
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#[test]
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fn peek_is_non_destructive() {
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let m = ContentionManifest::load_from_str(MINIMAL).unwrap();
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assert!(m.peek(6, 104664).is_some());
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assert!(m.peek(6, 104664).is_some());
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assert_eq!(m.remaining_count(), 2);
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}
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#[test]
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fn rejects_unknown_version() {
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let bad = r#"{"version":99,"entries":[]}"#;
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assert!(ContentionManifest::load_from_str(bad).is_err());
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}
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#[test]
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fn rejects_missing_entries() {
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let bad = r#"{"version":1}"#;
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assert!(ContentionManifest::load_from_str(bad).is_err());
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}
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#[test]
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fn rejects_bad_cs_ptr() {
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let bad = r#"{"version":1,"entries":[
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{"tid":1,"tid_event_idx":0,"site_sid":"x","cs_ptr":"not-a-hex","contended":true}
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]}"#;
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assert!(ContentionManifest::load_from_str(bad).is_err());
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}
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#[test]
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fn parses_cs_ptr_without_0x_prefix() {
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let ok = r#"{"version":1,"entries":[
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{"tid":1,"tid_event_idx":0,"site_sid":"x","cs_ptr":"DEADBEEF","contended":true}
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]}"#;
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let m = ContentionManifest::load_from_str(ok).unwrap();
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assert_eq!(m.consume(1, 0).unwrap().cs_ptr, 0xDEADBEEF);
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}
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#[test]
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fn empty_entries_loads_zero_count() {
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let ok = r#"{"version":1,"entries":[]}"#;
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let m = ContentionManifest::load_from_str(ok).unwrap();
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assert_eq!(m.initial_count(), 0);
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assert!(m.consume(0, 0).is_none());
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}
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|
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#[test]
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fn consume_at_peek_translates_idx() {
|
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// Manifest stores canary idx values. Consumer's peek matches
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// canary's idx on the very first lookup (no prior emits), then
|
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// shifts by the number of emits this side has done.
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let json = r#"{"version":1,"entries":[
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{"tid":1,"tid_event_idx":100,"site_sid":"aa","cs_ptr":"0xaa","contended":true},
|
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{"tid":1,"tid_event_idx":200,"site_sid":"bb","cs_ptr":"0xbb","contended":true},
|
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{"tid":1,"tid_event_idx":300,"site_sid":"cc","cs_ptr":"0xcc","contended":true}
|
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]}"#;
|
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let m = ContentionManifest::load_from_str(json).unwrap();
|
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// First lookup: peek_idx == canary_idx (no prior emit).
|
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let hit = m.consume_at_peek(1, 100).unwrap();
|
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assert_eq!(hit.tid_event_idx, 100);
|
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assert_eq!(m.emit_count(1), 1);
|
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// Second hit: ours's peek is 201 (canary's 200 + 1 prior emit).
|
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let hit = m.consume_at_peek(1, 201).unwrap();
|
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assert_eq!(hit.tid_event_idx, 200);
|
||||
assert_eq!(m.emit_count(1), 2);
|
||||
// Third hit: ours's peek is 302.
|
||||
let hit = m.consume_at_peek(1, 302).unwrap();
|
||||
assert_eq!(hit.tid_event_idx, 300);
|
||||
assert_eq!(m.emit_count(1), 3);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn consume_at_peek_miss_does_not_bump_emit_count() {
|
||||
let json = r#"{"version":1,"entries":[
|
||||
{"tid":1,"tid_event_idx":100,"site_sid":"aa","cs_ptr":"0xaa","contended":true}
|
||||
]}"#;
|
||||
let m = ContentionManifest::load_from_str(json).unwrap();
|
||||
// Miss at idx 50 — emit count stays 0.
|
||||
assert!(m.consume_at_peek(1, 50).is_none());
|
||||
assert_eq!(m.emit_count(1), 0);
|
||||
// Miss at idx 999 — still 0.
|
||||
assert!(m.consume_at_peek(1, 999).is_none());
|
||||
assert_eq!(m.emit_count(1), 0);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn consume_at_peek_per_tid_independent() {
|
||||
let json = r#"{"version":1,"entries":[
|
||||
{"tid":1,"tid_event_idx":100,"site_sid":"a","cs_ptr":"0xa","contended":true},
|
||||
{"tid":2,"tid_event_idx":200,"site_sid":"b","cs_ptr":"0xb","contended":true},
|
||||
{"tid":2,"tid_event_idx":300,"site_sid":"c","cs_ptr":"0xc","contended":true}
|
||||
]}"#;
|
||||
let m = ContentionManifest::load_from_str(json).unwrap();
|
||||
assert!(m.consume_at_peek(1, 100).is_some());
|
||||
// tid=2's count should be unaffected by tid=1's emit.
|
||||
assert_eq!(m.emit_count(2), 0);
|
||||
assert!(m.consume_at_peek(2, 200).is_some());
|
||||
// Now tid=2 has 1 emit; its second entry is at canary 300, so peek 301.
|
||||
assert!(m.consume_at_peek(2, 301).is_some());
|
||||
assert_eq!(m.emit_count(2), 2);
|
||||
}
|
||||
}
|
||||
774
crates/xenia-kernel/src/event_log.rs
Normal file
774
crates/xenia-kernel/src/event_log.rs
Normal file
@@ -0,0 +1,774 @@
|
||||
//! Phase A event-log emitter. Schema v1 — see
|
||||
//! `xenia-rs/audit-runs/phase-a-diff-harness/schema-v1.md`.
|
||||
//!
|
||||
//! Cvar-gated (disabled by default). Zero cost when disabled:
|
||||
//! `is_enabled()` is a relaxed atomic-bool load.
|
||||
|
||||
use std::collections::HashMap;
|
||||
use std::fs::File;
|
||||
use std::io::{BufWriter, Write};
|
||||
use std::path::{Path, PathBuf};
|
||||
use std::sync::atomic::{AtomicBool, Ordering};
|
||||
use std::sync::{Mutex, OnceLock};
|
||||
use std::time::Instant;
|
||||
|
||||
static ENABLED: AtomicBool = AtomicBool::new(false);
|
||||
static SINK: OnceLock<Mutex<BufWriter<File>>> = OnceLock::new();
|
||||
static T0: OnceLock<Instant> = OnceLock::new();
|
||||
static TID_COUNTERS: OnceLock<Mutex<HashMap<u32, u64>>> = OnceLock::new();
|
||||
/// Iterate 2.M (reading-error #42): record the Phase-A trace path so the
|
||||
/// always-on exit-time thread-state dump can derive a sibling JSON path
|
||||
/// without re-threading CLI flags through `cmd_exec_inner`. `None` when
|
||||
/// Phase-A is disabled — exit-state dump falls back to a CWD-relative
|
||||
/// default in that case.
|
||||
static OUTPUT_PATH: OnceLock<PathBuf> = OnceLock::new();
|
||||
|
||||
/// Object-type codes — must match canary's enum exactly (schema-v1.md).
|
||||
pub mod object_type {
|
||||
pub const UNKNOWN: u32 = 0x00;
|
||||
pub const EVENT: u32 = 0x01;
|
||||
pub const MUTANT: u32 = 0x02;
|
||||
pub const SEMAPHORE: u32 = 0x03;
|
||||
pub const TIMER: u32 = 0x04;
|
||||
pub const THREAD: u32 = 0x05;
|
||||
pub const FILE: u32 = 0x06;
|
||||
pub const IO_COMPLETION: u32 = 0x07;
|
||||
pub const MODULE: u32 = 0x08;
|
||||
pub const ENUM_STATE: u32 = 0x09;
|
||||
pub const SECTION: u32 = 0x0A;
|
||||
pub const NOTIFICATION: u32 = 0x0B;
|
||||
/// Phase D Stage 1 (canary side) / Stage 3 (ours side): pseudo-type
|
||||
/// used as the `object_type` input to `semantic_id_shared_global`
|
||||
/// for RTL_CRITICAL_SECTION pointers. CS is NOT a real XObject
|
||||
/// (it lives as a guest-memory struct, not a handle-tabled kernel
|
||||
/// object), but the `site_sid` field of `contention.observed`
|
||||
/// reuses the shared-global SID recipe so the Stage-3 manifest can
|
||||
/// compute the same SID in both engines for the same CS pointer.
|
||||
/// Must match canary's `kObjCriticalSection` exactly.
|
||||
pub const CRITICAL_SECTION: u32 = 0x0C;
|
||||
}
|
||||
|
||||
/// Initialize the emitter. Call from main once at startup with the
|
||||
/// resolved path (CLI flag or env var). `None` keeps the emitter
|
||||
/// disabled; cost is one relaxed atomic-bool check per emit call.
|
||||
pub fn init(path: Option<&Path>) {
|
||||
let _ = T0.set(Instant::now());
|
||||
let Some(path) = path else {
|
||||
return;
|
||||
};
|
||||
let _ = OUTPUT_PATH.set(path.to_path_buf());
|
||||
let f = match File::create(path) {
|
||||
Ok(f) => f,
|
||||
Err(e) => {
|
||||
eprintln!(
|
||||
"phase-a event log: failed to open {:?}: {e} — disabled",
|
||||
path
|
||||
);
|
||||
return;
|
||||
}
|
||||
};
|
||||
let mut bw = BufWriter::new(f);
|
||||
// Schema header (synthetic tid=0).
|
||||
let host_ns = host_ns_since_start();
|
||||
let _ = writeln!(
|
||||
bw,
|
||||
r#"{{"schema_version":1,"engine":"ours","kind":"schema_version","tid":0,"tid_event_idx":0,"guest_cycle":0,"host_ns":{host_ns},"deterministic":true,"payload":{{"version":1,"emitter_build":"ours-phaseA"}}}}"#
|
||||
);
|
||||
let _ = bw.flush();
|
||||
if SINK.set(Mutex::new(bw)).is_err() {
|
||||
// Already initialized — leave alone.
|
||||
return;
|
||||
}
|
||||
let _ = TID_COUNTERS.set(Mutex::new(HashMap::new()));
|
||||
ENABLED.store(true, Ordering::Release);
|
||||
}
|
||||
|
||||
#[inline]
|
||||
pub fn is_enabled() -> bool {
|
||||
ENABLED.load(Ordering::Relaxed)
|
||||
}
|
||||
|
||||
/// Path passed to `init()`, if any. Used by the iterate-2.M exit-state
|
||||
/// dump so the sibling JSON lands next to the Phase-A JSONL trace.
|
||||
pub fn output_path() -> Option<&'static Path> {
|
||||
OUTPUT_PATH.get().map(|p| p.as_path())
|
||||
}
|
||||
|
||||
fn host_ns_since_start() -> u128 {
|
||||
let t0 = T0.get_or_init(Instant::now);
|
||||
t0.elapsed().as_nanos()
|
||||
}
|
||||
|
||||
fn next_tid_idx(tid: u32) -> u64 {
|
||||
let map = TID_COUNTERS.get().expect("event_log not initialized");
|
||||
let mut g = map.lock().unwrap();
|
||||
let entry = g.entry(tid).or_insert(0);
|
||||
let idx = *entry;
|
||||
*entry = idx + 1;
|
||||
idx
|
||||
}
|
||||
|
||||
/// Peek next tid_event_idx without consuming it. Useful for handle
|
||||
/// semantic-id computation that needs to match what the next emit will use.
|
||||
pub fn peek_tid_idx(tid: u32) -> u64 {
|
||||
let Some(map) = TID_COUNTERS.get() else {
|
||||
return 0;
|
||||
};
|
||||
let g = map.lock().unwrap();
|
||||
*g.get(&tid).unwrap_or(&0)
|
||||
}
|
||||
|
||||
/// FNV-1a 64-bit. Identical implementation in canary (see event_log.cc).
|
||||
pub fn semantic_id(
|
||||
create_site_pc: u32,
|
||||
creating_tid: u32,
|
||||
tid_event_idx_at_creation: u64,
|
||||
object_type: u32,
|
||||
) -> u64 {
|
||||
let mut bytes = [0u8; 4 + 4 + 8 + 4];
|
||||
bytes[0..4].copy_from_slice(&create_site_pc.to_le_bytes());
|
||||
bytes[4..8].copy_from_slice(&creating_tid.to_le_bytes());
|
||||
bytes[8..16].copy_from_slice(&tid_event_idx_at_creation.to_le_bytes());
|
||||
bytes[16..20].copy_from_slice(&object_type.to_le_bytes());
|
||||
let mut h: u64 = 0xCBF29CE484222325;
|
||||
for b in bytes.iter() {
|
||||
h ^= *b as u64;
|
||||
h = h.wrapping_mul(0x100000001B3);
|
||||
}
|
||||
h
|
||||
}
|
||||
|
||||
/// Phase C+18: marker sentinel used as `create_site_pc` in
|
||||
/// `semantic_id_shared_global` so the resulting SID is distinguishable
|
||||
/// from regular per-thread handle SIDs (which use real guest PCs that
|
||||
/// never collide with this value). Picked outside any plausible guest
|
||||
/// code-address range. Both engines MUST use this exact constant.
|
||||
pub const SHARED_GLOBAL_SID_MARKER: u32 = 0xC01AB005;
|
||||
|
||||
/// Phase C+18: scheduling-invariant SID for **process-global** kernel
|
||||
/// dispatcher objects that are lazy-wrapped on first guest-thread touch
|
||||
/// (see ours's `ensure_dispatcher_object` and canary's
|
||||
/// `XObject::GetNativeObject`).
|
||||
///
|
||||
/// Whichever guest thread happens to be the first to touch a given
|
||||
/// dispatcher pointer synthesizes the wrapper, but **which** thread wins
|
||||
/// is timing-dependent and differs between canary and ours (and between
|
||||
/// runs of the same engine). The regular per-thread `semantic_id`
|
||||
/// recipe — keyed on `(create_site_pc, creating_tid, tid_event_idx)` —
|
||||
/// therefore produces different SIDs in each engine for the same logical
|
||||
/// object.
|
||||
///
|
||||
/// This helper keys on `(SHARED_GLOBAL_SID_MARKER, 0, pointer, object_type)`
|
||||
/// so the SID depends only on the object's identity, not on the
|
||||
/// scheduling order. Subsequent `wait.begin` events that reference the
|
||||
/// dispatcher resolve a stable cross-engine SID, and the diff tool can
|
||||
/// use SID equality to cross-tid match the floating `handle.create`
|
||||
/// event.
|
||||
///
|
||||
/// Per the schema-v1 SID API, the inputs are still fed to the existing
|
||||
/// `semantic_id()` FNV-1a function unchanged — we just choose inputs
|
||||
/// that are scheduling-invariant. No new wire format.
|
||||
pub fn semantic_id_shared_global(pointer: u32, object_type: u32) -> u64 {
|
||||
semantic_id(
|
||||
SHARED_GLOBAL_SID_MARKER,
|
||||
0,
|
||||
pointer as u64,
|
||||
object_type,
|
||||
)
|
||||
}
|
||||
|
||||
fn write_line(line: &str) {
|
||||
let Some(sink) = SINK.get() else { return };
|
||||
let mut g = sink.lock().unwrap();
|
||||
let _ = g.write_all(line.as_bytes());
|
||||
let _ = g.write_all(b"\n");
|
||||
let _ = g.flush();
|
||||
}
|
||||
|
||||
fn json_escape(s: &str) -> String {
|
||||
let mut out = String::with_capacity(s.len() + 2);
|
||||
for c in s.chars() {
|
||||
match c {
|
||||
'\\' => out.push_str("\\\\"),
|
||||
'"' => out.push_str("\\\""),
|
||||
'\n' => out.push_str("\\n"),
|
||||
'\r' => out.push_str("\\r"),
|
||||
'\t' => out.push_str("\\t"),
|
||||
c if (c as u32) < 0x20 => {
|
||||
out.push_str(&format!("\\u{:04x}", c as u32));
|
||||
}
|
||||
c => out.push(c),
|
||||
}
|
||||
}
|
||||
out
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn common_prefix(
|
||||
kind: &str,
|
||||
tid: u32,
|
||||
idx: u64,
|
||||
guest_cycle: u64,
|
||||
deterministic: bool,
|
||||
) -> String {
|
||||
let host_ns = host_ns_since_start();
|
||||
let det = if deterministic { "true" } else { "false" };
|
||||
format!(
|
||||
r#"{{"schema_version":1,"engine":"ours","kind":"{kind}","tid":{tid},"tid_event_idx":{idx},"guest_cycle":{guest_cycle},"host_ns":{host_ns},"deterministic":{det}"#
|
||||
)
|
||||
}
|
||||
|
||||
pub fn emit_import_call(tid: u32, guest_cycle: u64, module: &str, ord: u16, name: &str) {
|
||||
if !is_enabled() {
|
||||
return;
|
||||
}
|
||||
let idx = next_tid_idx(tid);
|
||||
let mut line = common_prefix("import.call", tid, idx, guest_cycle, true);
|
||||
line.push_str(&format!(
|
||||
r#","payload":{{"module":"{}","ord":{},"name":"{}"}}}}"#,
|
||||
json_escape(module),
|
||||
ord,
|
||||
json_escape(name)
|
||||
));
|
||||
write_line(&line);
|
||||
}
|
||||
|
||||
pub fn emit_kernel_call(tid: u32, guest_cycle: u64, name: &str) {
|
||||
if !is_enabled() {
|
||||
return;
|
||||
}
|
||||
let idx = next_tid_idx(tid);
|
||||
let mut line = common_prefix("kernel.call", tid, idx, guest_cycle, true);
|
||||
line.push_str(&format!(
|
||||
r#","payload":{{"name":"{}","args":{{}},"args_resolved":{{}}}}}}"#,
|
||||
json_escape(name)
|
||||
));
|
||||
write_line(&line);
|
||||
}
|
||||
|
||||
/// Phase C+10 schema-v1 extension: emit a `kernel.call` event whose
|
||||
/// `args_resolved` field carries a best-effort dereferenced path string.
|
||||
///
|
||||
/// Schema-v1 already allows `args_resolved` to be a free-form object
|
||||
/// (see schema-v1.md kernel.call payload), so this remains v1-compatible.
|
||||
/// Cvar-gated default-off via `is_enabled()`. When the path is empty or
|
||||
/// resolution failed, the caller should pass `None` and we degrade to the
|
||||
/// existing empty-object form so emitter output is byte-identical to the
|
||||
/// pre-extension behavior.
|
||||
///
|
||||
/// Determinism: the resolved path is read directly out of guest memory
|
||||
/// (OBJECT_ATTRIBUTES → ANSI_STRING → bytes). It is fully deterministic
|
||||
/// across runs of the same input. The event-level `deterministic:true`
|
||||
/// flag is preserved.
|
||||
pub fn emit_kernel_call_with_path(
|
||||
tid: u32,
|
||||
guest_cycle: u64,
|
||||
name: &str,
|
||||
path: Option<&str>,
|
||||
) {
|
||||
if !is_enabled() {
|
||||
return;
|
||||
}
|
||||
let idx = next_tid_idx(tid);
|
||||
let mut line = common_prefix("kernel.call", tid, idx, guest_cycle, true);
|
||||
match path {
|
||||
Some(p) if !p.is_empty() => {
|
||||
line.push_str(&format!(
|
||||
r#","payload":{{"name":"{}","args":{{}},"args_resolved":{{"path":"{}"}}}}}}"#,
|
||||
json_escape(name),
|
||||
json_escape(p)
|
||||
));
|
||||
}
|
||||
_ => {
|
||||
line.push_str(&format!(
|
||||
r#","payload":{{"name":"{}","args":{{}},"args_resolved":{{}}}}}}"#,
|
||||
json_escape(name)
|
||||
));
|
||||
}
|
||||
}
|
||||
write_line(&line);
|
||||
}
|
||||
|
||||
pub fn emit_kernel_return(tid: u32, guest_cycle: u64, name: &str, return_value: u64) {
|
||||
if !is_enabled() {
|
||||
return;
|
||||
}
|
||||
let idx = next_tid_idx(tid);
|
||||
let mut line = common_prefix("kernel.return", tid, idx, guest_cycle, true);
|
||||
line.push_str(&format!(
|
||||
r#","payload":{{"name":"{}","return_value":{},"status":"0x{:08x}","side_effects":[]}}}}"#,
|
||||
json_escape(name),
|
||||
return_value,
|
||||
return_value as u32
|
||||
));
|
||||
write_line(&line);
|
||||
}
|
||||
|
||||
pub fn emit_handle_create(
|
||||
tid: u32,
|
||||
guest_cycle: u64,
|
||||
semantic_id: u64,
|
||||
object_type: u32,
|
||||
raw_handle_id: u32,
|
||||
object_name: Option<&str>,
|
||||
) {
|
||||
if !is_enabled() {
|
||||
return;
|
||||
}
|
||||
let idx = next_tid_idx(tid);
|
||||
let mut line = common_prefix("handle.create", tid, idx, guest_cycle, true);
|
||||
let name_field = match object_name {
|
||||
Some(n) => format!(r#""{}""#, json_escape(n)),
|
||||
None => "null".to_string(),
|
||||
};
|
||||
line.push_str(&format!(
|
||||
r#","payload":{{"handle_semantic_id":"{:016x}","object_type":{},"object_name":{},"raw_handle_id":"0x{:08x}"}}}}"#,
|
||||
semantic_id, object_type, name_field, raw_handle_id
|
||||
));
|
||||
write_line(&line);
|
||||
}
|
||||
|
||||
pub fn emit_handle_destroy(
|
||||
tid: u32,
|
||||
guest_cycle: u64,
|
||||
semantic_id: u64,
|
||||
raw_handle_id: u32,
|
||||
prior_refcount: u32,
|
||||
) {
|
||||
if !is_enabled() {
|
||||
return;
|
||||
}
|
||||
let idx = next_tid_idx(tid);
|
||||
let mut line = common_prefix("handle.destroy", tid, idx, guest_cycle, true);
|
||||
line.push_str(&format!(
|
||||
r#","payload":{{"handle_semantic_id":"{:016x}","raw_handle_id":"0x{:08x}","prior_refcount":{}}}}}"#,
|
||||
semantic_id, raw_handle_id, prior_refcount
|
||||
));
|
||||
write_line(&line);
|
||||
}
|
||||
|
||||
pub fn emit_thread_create(
|
||||
parent_tid: u32,
|
||||
guest_cycle: u64,
|
||||
semantic_id: u64,
|
||||
entry_pc: u32,
|
||||
ctx_ptr: u32,
|
||||
priority: u32,
|
||||
affinity: u32,
|
||||
stack_size: u32,
|
||||
suspended: bool,
|
||||
) {
|
||||
if !is_enabled() {
|
||||
return;
|
||||
}
|
||||
let idx = next_tid_idx(parent_tid);
|
||||
let mut line = common_prefix("thread.create", parent_tid, idx, guest_cycle, true);
|
||||
line.push_str(&format!(
|
||||
r#","payload":{{"handle_semantic_id":"{:016x}","parent_tid":{},"entry_pc":"0x{:08x}","ctx_ptr":"0x{:08x}","priority":{},"affinity":{},"stack_size":{},"suspended":{}}}}}"#,
|
||||
semantic_id,
|
||||
parent_tid,
|
||||
entry_pc,
|
||||
ctx_ptr,
|
||||
priority,
|
||||
affinity,
|
||||
stack_size,
|
||||
suspended
|
||||
));
|
||||
write_line(&line);
|
||||
}
|
||||
|
||||
pub fn emit_thread_exit(tid: u32, guest_cycle: u64, exit_code: u32) {
|
||||
if !is_enabled() {
|
||||
return;
|
||||
}
|
||||
let idx = next_tid_idx(tid);
|
||||
let mut line = common_prefix("thread.exit", tid, idx, guest_cycle, true);
|
||||
line.push_str(&format!(r#","payload":{{"exit_code":{}}}}}"#, exit_code));
|
||||
write_line(&line);
|
||||
}
|
||||
|
||||
pub fn emit_wait_begin(
|
||||
tid: u32,
|
||||
guest_cycle: u64,
|
||||
handles: &[u64],
|
||||
timeout_ns: i64,
|
||||
alertable: bool,
|
||||
wait_all: bool,
|
||||
) {
|
||||
if !is_enabled() {
|
||||
return;
|
||||
}
|
||||
let idx = next_tid_idx(tid);
|
||||
let mut line = common_prefix("wait.begin", tid, idx, guest_cycle, true);
|
||||
let mut ids = String::from("[");
|
||||
for (i, h) in handles.iter().enumerate() {
|
||||
if i > 0 {
|
||||
ids.push(',');
|
||||
}
|
||||
ids.push_str(&format!(r#""{:016x}""#, h));
|
||||
}
|
||||
ids.push(']');
|
||||
let wait_type = if wait_all { "all" } else { "any" };
|
||||
line.push_str(&format!(
|
||||
r#","payload":{{"handles_semantic_ids":{},"timeout_ns":{},"alertable":{},"wait_type":"{}"}}}}"#,
|
||||
ids, timeout_ns, alertable, wait_type
|
||||
));
|
||||
write_line(&line);
|
||||
}
|
||||
|
||||
pub fn emit_wait_end(
|
||||
tid: u32,
|
||||
guest_cycle: u64,
|
||||
status: u32,
|
||||
woken_by: Option<u64>,
|
||||
) {
|
||||
if !is_enabled() {
|
||||
return;
|
||||
}
|
||||
let idx = next_tid_idx(tid);
|
||||
let mut line = common_prefix("wait.end", tid, idx, guest_cycle, false);
|
||||
let woken = match woken_by {
|
||||
Some(h) => format!(r#""{:016x}""#, h),
|
||||
None => "null".to_string(),
|
||||
};
|
||||
line.push_str(&format!(
|
||||
r#","payload":{{"status":"0x{:08x}","woken_by_semantic_id":{},"wait_duration_cycles":0}}}}"#,
|
||||
status, woken
|
||||
));
|
||||
write_line(&line);
|
||||
}
|
||||
|
||||
// ===== Phase C+15-\u03b1 — Handle-semantic-ID registry =====
|
||||
//
|
||||
// Maps raw handle id -> FNV-1a 64-bit semantic_id assigned at handle
|
||||
// creation. Used by `handle.destroy`, `wait.begin`, and any future event
|
||||
// that references a handle to emit a stable cross-engine identity.
|
||||
//
|
||||
// Lifetime: entries are inserted on `register_handle_semantic_id` and
|
||||
// removed on `forget_handle_semantic_id` (handle destroy). The map is
|
||||
// completely separate from the live KernelState object table —
|
||||
// looking up a destroyed handle returns None and the caller emits 0.
|
||||
static HANDLE_SEMANTIC_IDS: OnceLock<Mutex<HashMap<u32, u64>>> = OnceLock::new();
|
||||
|
||||
fn handle_sid_map() -> &'static Mutex<HashMap<u32, u64>> {
|
||||
HANDLE_SEMANTIC_IDS.get_or_init(|| Mutex::new(HashMap::new()))
|
||||
}
|
||||
|
||||
/// Record `(raw_handle_id -> semantic_id)` so subsequent destroy/wait
|
||||
/// events can resolve the SID. No-op when event_log is disabled.
|
||||
pub fn register_handle_semantic_id(raw_handle_id: u32, sid: u64) {
|
||||
if !is_enabled() {
|
||||
return;
|
||||
}
|
||||
let m = handle_sid_map();
|
||||
m.lock().unwrap().insert(raw_handle_id, sid);
|
||||
}
|
||||
|
||||
/// Look up the semantic_id previously registered for a raw handle.
|
||||
/// Returns 0 if the handle was never registered (e.g. pre-init handles,
|
||||
/// pseudo-handles, or already destroyed).
|
||||
pub fn lookup_handle_semantic_id(raw_handle_id: u32) -> u64 {
|
||||
let Some(map) = HANDLE_SEMANTIC_IDS.get() else {
|
||||
return 0;
|
||||
};
|
||||
*map.lock().unwrap().get(&raw_handle_id).unwrap_or(&0)
|
||||
}
|
||||
|
||||
/// Forget the semantic_id mapping for a destroyed handle. Returns the
|
||||
/// previous mapping (0 if absent) so callers can emit `handle.destroy`
|
||||
/// with the correct SID before the entry is dropped.
|
||||
pub fn forget_handle_semantic_id(raw_handle_id: u32) -> u64 {
|
||||
let Some(map) = HANDLE_SEMANTIC_IDS.get() else {
|
||||
return 0;
|
||||
};
|
||||
map.lock().unwrap().remove(&raw_handle_id).unwrap_or(0)
|
||||
}
|
||||
|
||||
/// Convenience wrapper used by both engines: at handle creation time,
|
||||
/// peek the current tid_event_idx, compute the FNV-1a 64-bit semantic_id,
|
||||
/// register it for the raw handle, and emit a `handle.create` event.
|
||||
/// Returns the semantic_id so callers can stash it on object metadata
|
||||
/// when needed (currently only used for the registry side-effect).
|
||||
///
|
||||
/// `create_site_pc` is the guest LR at the kernel call that produced
|
||||
/// the handle (or 0 if not available — both engines must use the same
|
||||
/// value for the cross-engine SID to match). For v1.1 we pass 0
|
||||
/// universally, which preserves cross-engine identity since the SID
|
||||
/// becomes `fnv1a(0, tid, idx, type)` and both engines emit the same
|
||||
/// tuple in the same order.
|
||||
pub fn emit_handle_create_auto(
|
||||
tid: u32,
|
||||
guest_cycle: u64,
|
||||
create_site_pc: u32,
|
||||
object_type: u32,
|
||||
raw_handle_id: u32,
|
||||
object_name: Option<&str>,
|
||||
) -> u64 {
|
||||
if !is_enabled() {
|
||||
return 0;
|
||||
}
|
||||
let idx_at_creation = peek_tid_idx(tid);
|
||||
let sid = semantic_id(create_site_pc, tid, idx_at_creation, object_type);
|
||||
register_handle_semantic_id(raw_handle_id, sid);
|
||||
emit_handle_create(tid, guest_cycle, sid, object_type, raw_handle_id, object_name);
|
||||
sid
|
||||
}
|
||||
|
||||
/// Phase C+18: emit `handle.create` for a **process-global** kernel
|
||||
/// dispatcher (canary `XObject::GetNativeObject` / ours
|
||||
/// `ensure_dispatcher_object` first-touch synthesis). The SID is
|
||||
/// computed via `semantic_id_shared_global(pointer, object_type)` so
|
||||
/// the same object yields the same SID in both engines regardless of
|
||||
/// which guest thread happens to be the first toucher (see C+18
|
||||
/// memory entry / schema-v1.md §"Shared-global SIDs"). The diff tool
|
||||
/// cross-tid matches `handle.create` events on shared-global SIDs.
|
||||
///
|
||||
/// The `raw_handle_id` is the guest dispatcher pointer itself in
|
||||
/// ours; canary's `XObject::StashHandle` round-trips through the same
|
||||
/// dispatcher slot. Cross-engine SID identity is independent of raw
|
||||
/// handle namespace.
|
||||
pub fn emit_handle_create_shared_global(
|
||||
tid: u32,
|
||||
guest_cycle: u64,
|
||||
object_type: u32,
|
||||
raw_handle_id: u32,
|
||||
object_name: Option<&str>,
|
||||
) -> u64 {
|
||||
if !is_enabled() {
|
||||
return 0;
|
||||
}
|
||||
let sid = semantic_id_shared_global(raw_handle_id, object_type);
|
||||
register_handle_semantic_id(raw_handle_id, sid);
|
||||
emit_handle_create(tid, guest_cycle, sid, object_type, raw_handle_id, object_name);
|
||||
sid
|
||||
}
|
||||
|
||||
/// Phase D Stage 3: emit a `contention.observed` event. Mirror of canary's
|
||||
/// `phase_a::EmitContentionObserved` (Stage 1). Emitted from
|
||||
/// `rtl_enter_critical_section` only when the contention-manifest forces a
|
||||
/// park, so per-tid ordinals stay aligned with canary's emitter. The
|
||||
/// `site_sid` is computed via `semantic_id_shared_global(cs_ptr,
|
||||
/// object_type::CRITICAL_SECTION)` so both engines produce the same SID
|
||||
/// for the same CS pointer (cross-engine identity).
|
||||
///
|
||||
/// `is_enabled()` gates this just like every other emitter — when the
|
||||
/// Phase A event log is disabled, this is a zero-cost no-op.
|
||||
///
|
||||
/// Note: `contention.observed` is marked `ENGINE_LOCAL_KINDS` in
|
||||
/// `diff_events.py` (Stage 4), so the diff tool advances the per-tid
|
||||
/// pointer past these events on either side without comparison. That
|
||||
/// keeps the matched-prefix definition unchanged across cvar
|
||||
/// configurations.
|
||||
pub fn emit_contention_observed(
|
||||
tid: u32,
|
||||
guest_cycle: u64,
|
||||
cs_ptr: u32,
|
||||
contended: bool,
|
||||
) {
|
||||
if !is_enabled() {
|
||||
return;
|
||||
}
|
||||
let idx = next_tid_idx(tid);
|
||||
let site_sid = semantic_id_shared_global(cs_ptr, object_type::CRITICAL_SECTION);
|
||||
let mut line = common_prefix("contention.observed", tid, idx, guest_cycle, true);
|
||||
line.push_str(&format!(
|
||||
r#","payload":{{"cs_ptr":"0x{:08x}","site_sid":"{:016x}","contended":{}}}}}"#,
|
||||
cs_ptr,
|
||||
site_sid,
|
||||
if contended { "true" } else { "false" }
|
||||
));
|
||||
write_line(&line);
|
||||
}
|
||||
|
||||
/// Iterate 2.Q: emit a `signal.match` event recording which handle a
|
||||
/// signal-class call (`NtSetEvent`/`KeSetEvent`/`NtReleaseSemaphore`/
|
||||
/// `KeReleaseSemaphore`) targeted at the moment the signal fired, along
|
||||
/// with the set of guest threads currently parked on that handle. The
|
||||
/// caller is expected to gather `waiter_tids` BEFORE the wake fans out,
|
||||
/// so the emitted set reflects the pre-wake waiter list.
|
||||
///
|
||||
/// `signal_call` is the kernel symbol (static `&str`). `target_handle`
|
||||
/// is the resolved (post-pseudo-handle / post-dup-id) handle id; the
|
||||
/// SID is resolved from the global registry (0 when absent — e.g.
|
||||
/// pre-init handles or AUDIT-062 wrong-slot targets that were never
|
||||
/// registered). `waiter_count` is the length of `waiter_tids` (passed
|
||||
/// explicitly so callers may skip the emit when 0). This kind is
|
||||
/// ENGINE_LOCAL in the diff tool — it consumes one per-tid idx slot on
|
||||
/// the emitter side without alignment cost.
|
||||
///
|
||||
/// Pure observability. No behavior change. Cvar-gated default-off via
|
||||
/// `is_enabled()`; when the Phase A event log is disabled the call is
|
||||
/// a single relaxed atomic-bool check.
|
||||
pub fn emit_signal_match(
|
||||
tid: u32,
|
||||
guest_cycle: u64,
|
||||
signal_call: &str,
|
||||
target_handle: u32,
|
||||
waiter_count: usize,
|
||||
waiter_tids: &[u32],
|
||||
) {
|
||||
if !is_enabled() {
|
||||
return;
|
||||
}
|
||||
let idx = next_tid_idx(tid);
|
||||
let target_sid = lookup_handle_semantic_id(target_handle);
|
||||
let sid_field = if target_sid != 0 {
|
||||
format!(r#""{:016x}""#, target_sid)
|
||||
} else {
|
||||
"null".to_string()
|
||||
};
|
||||
let mut tids_field = String::from("[");
|
||||
for (i, t) in waiter_tids.iter().enumerate() {
|
||||
if i > 0 {
|
||||
tids_field.push(',');
|
||||
}
|
||||
tids_field.push_str(&format!("{}", t));
|
||||
}
|
||||
tids_field.push(']');
|
||||
let mut line = common_prefix("signal.match", tid, idx, guest_cycle, true);
|
||||
line.push_str(&format!(
|
||||
r#","payload":{{"signal_call":"{}","target_handle":"0x{:08x}","target_sid":{},"waiter_count":{},"waiter_tids":{}}}}}"#,
|
||||
json_escape(signal_call),
|
||||
target_handle,
|
||||
sid_field,
|
||||
waiter_count,
|
||||
tids_field,
|
||||
));
|
||||
write_line(&line);
|
||||
}
|
||||
|
||||
/// Iterate 2.T: emit a `wake.requested` event recording one waiter the
|
||||
/// wake-loop in `wake_eligible_waiters` actually touched. Distinct from
|
||||
/// `signal.match` (which records pre-wake intent at the call boundary):
|
||||
/// `wake.requested` records the per-waiter transition outcome the kernel
|
||||
/// wake primitive produced. Together they decisively distinguish:
|
||||
/// C-2a (`signal.match` fires for waiter, but no `wake.requested` for
|
||||
/// the same target tid) — kernel waiter list inconsistency, OR
|
||||
/// C-2b (`wake.requested` fires with `transitioned=true` /
|
||||
/// `new_state="Ready"`, but target tid never executes) —
|
||||
/// scheduler-pick skip on Ready threads.
|
||||
///
|
||||
/// `signaling_tid` is the tid of the thread currently executing inside the
|
||||
/// signal call (e.g., NtReleaseSemaphore caller). `target_tid` is the
|
||||
/// woken thread's guest tid. `target_handle` is the handle we're waking
|
||||
/// on. `wait_kind` is one of `"WaitAny"`, `"WaitAll"`, `"WaitSingle"`,
|
||||
/// `"Other"`. `transitioned` is true iff prior_state was Blocked and
|
||||
/// post-state is Ready; `new_state` carries the post-call state string
|
||||
/// (`"Ready"`, `"StillBlocked"`, `"AlreadyReady"`, `"Exited"`, `"Other"`).
|
||||
/// `target_cpu` is the woken thread's hw_id, or `null` if unknown.
|
||||
///
|
||||
/// ENGINE_LOCAL in the diff tool (see `ENGINE_LOCAL_KINDS` in
|
||||
/// `tools/diff-events/diff_events.py`). Pure observability — no behavior
|
||||
/// change.
|
||||
#[allow(clippy::too_many_arguments)]
|
||||
pub fn emit_wake_requested(
|
||||
signaling_tid: u32,
|
||||
guest_cycle: u64,
|
||||
target_tid: u32,
|
||||
target_handle: u32,
|
||||
wait_kind: &str,
|
||||
transitioned: bool,
|
||||
new_state: &str,
|
||||
target_cpu: Option<u8>,
|
||||
) {
|
||||
if !is_enabled() {
|
||||
return;
|
||||
}
|
||||
let idx = next_tid_idx(signaling_tid);
|
||||
let cpu_field = match target_cpu {
|
||||
Some(c) => format!("{}", c),
|
||||
None => "null".to_string(),
|
||||
};
|
||||
let mut line = common_prefix("wake.requested", signaling_tid, idx, guest_cycle, true);
|
||||
line.push_str(&format!(
|
||||
r#","payload":{{"target_tid":{},"target_handle":"0x{:08x}","wait_kind":"{}","transitioned":{},"new_state":"{}","target_cpu":{}}}}}"#,
|
||||
target_tid,
|
||||
target_handle,
|
||||
json_escape(wait_kind),
|
||||
if transitioned { "true" } else { "false" },
|
||||
json_escape(new_state),
|
||||
cpu_field,
|
||||
));
|
||||
write_line(&line);
|
||||
}
|
||||
|
||||
/// Convenience wrapper used by both engines: emit a `handle.destroy`
|
||||
/// event resolving the SID from the registry, and forget the mapping.
|
||||
/// Pass `prior_refcount` as observed pre-decrement.
|
||||
pub fn emit_handle_destroy_auto(
|
||||
tid: u32,
|
||||
guest_cycle: u64,
|
||||
raw_handle_id: u32,
|
||||
prior_refcount: u32,
|
||||
) {
|
||||
if !is_enabled() {
|
||||
return;
|
||||
}
|
||||
let sid = forget_handle_semantic_id(raw_handle_id);
|
||||
emit_handle_destroy(tid, guest_cycle, sid, raw_handle_id, prior_refcount);
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn fnv1a_known_vector() {
|
||||
// FNV-1a 64-bit of "foobar" = 0x85944171f73967e8 (standard test vector).
|
||||
let bytes = b"foobar";
|
||||
let mut h: u64 = 0xCBF29CE484222325;
|
||||
for b in bytes.iter() {
|
||||
h ^= *b as u64;
|
||||
h = h.wrapping_mul(0x100000001B3);
|
||||
}
|
||||
assert_eq!(h, 0x85944171f73967e8);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn semantic_id_stable() {
|
||||
// Identity inputs → known fixed FNV-1a output. Locks the algorithm
|
||||
// so a regression here is caught at build-time.
|
||||
let a = semantic_id(0x82001234, 1, 0, object_type::EVENT);
|
||||
let b = semantic_id(0x82001234, 1, 0, object_type::EVENT);
|
||||
assert_eq!(a, b);
|
||||
// Distinct input → distinct output (with overwhelming probability).
|
||||
let c = semantic_id(0x82001234, 1, 1, object_type::EVENT);
|
||||
assert_ne!(a, c);
|
||||
}
|
||||
|
||||
/// Phase C+18: the shared-global SID must depend ONLY on
|
||||
/// `(pointer, object_type)`, independent of the calling tid / event idx.
|
||||
/// Two calls with the same pointer+type return the same SID; otherwise
|
||||
/// the diff tool's cross-tid floating-create match cannot work.
|
||||
#[test]
|
||||
fn semantic_id_shared_global_is_scheduling_invariant() {
|
||||
let a = semantic_id_shared_global(0x828a3230, object_type::SEMAPHORE);
|
||||
let b = semantic_id_shared_global(0x828a3230, object_type::SEMAPHORE);
|
||||
assert_eq!(a, b);
|
||||
// Distinct pointer → distinct SID.
|
||||
let c = semantic_id_shared_global(0x828a3234, object_type::SEMAPHORE);
|
||||
assert_ne!(a, c);
|
||||
// Distinct type at the same pointer → distinct SID (defends against
|
||||
// games that map the same address with different headers — unlikely
|
||||
// but the property is cheap to assert).
|
||||
let d = semantic_id_shared_global(0x828a3230, object_type::EVENT);
|
||||
assert_ne!(a, d);
|
||||
}
|
||||
|
||||
/// Phase C+18: the shared-global SID must NOT collide with regular
|
||||
/// per-thread SIDs for plausible inputs. The marker constant
|
||||
/// `0xC01AB005` sits well outside any guest PC range (PPC text lives
|
||||
/// in 0x8200_0000-0x82FF_FFFF in Sylpheed; XEX header in
|
||||
/// 0x3001_xxxx; heap in 0x4xxx_xxxx). Verify the marker is also not
|
||||
/// a plausible tid/idx value.
|
||||
#[test]
|
||||
fn semantic_id_shared_global_marker_isolated() {
|
||||
// A regular per-thread SID for a plausible call site / tid / idx.
|
||||
let regular = semantic_id(0x82001234, 13, 42, object_type::SEMAPHORE);
|
||||
// The shared-global SID for the same type but different inputs.
|
||||
let global = semantic_id_shared_global(0x828a3230, object_type::SEMAPHORE);
|
||||
assert_ne!(regular, global);
|
||||
// Ensure marker constant is documented.
|
||||
assert_eq!(SHARED_GLOBAL_SID_MARKER, 0xC01AB005);
|
||||
}
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
@@ -1,8 +1,11 @@
|
||||
pub mod audit;
|
||||
pub mod contention_manifest;
|
||||
pub mod event_log;
|
||||
pub mod exports;
|
||||
pub mod interrupts;
|
||||
pub mod objects;
|
||||
pub mod path;
|
||||
pub mod phase_b_snapshot;
|
||||
pub mod state;
|
||||
pub mod thread;
|
||||
pub mod ui_bridge;
|
||||
|
||||
@@ -109,4 +109,20 @@ impl KernelObject {
|
||||
KernelObject::File { .. } => None,
|
||||
}
|
||||
}
|
||||
|
||||
/// Phase C+15-α: schema-v1 object-type code (see schema-v1.md
|
||||
/// `Object type codes` table). Used by `event_log::semantic_id` to
|
||||
/// compute cross-engine handle identity. Both engines must agree on
|
||||
/// this mapping.
|
||||
pub fn schema_object_type(&self) -> u32 {
|
||||
match self {
|
||||
KernelObject::Event { .. } => crate::event_log::object_type::EVENT,
|
||||
KernelObject::Mutex { .. } => crate::event_log::object_type::MUTANT,
|
||||
KernelObject::Semaphore { .. } => crate::event_log::object_type::SEMAPHORE,
|
||||
KernelObject::Timer { .. } => crate::event_log::object_type::TIMER,
|
||||
KernelObject::Thread { .. } => crate::event_log::object_type::THREAD,
|
||||
KernelObject::File { .. } => crate::event_log::object_type::FILE,
|
||||
KernelObject::NotifyListener { .. } => crate::event_log::object_type::NOTIFICATION,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@@ -100,6 +100,48 @@ pub fn object_attributes_to_vfs_path(mem: &GuestMemory, obj_attrs_ptr: u32) -> O
|
||||
Some(normalize_path(&raw))
|
||||
}
|
||||
|
||||
/// Phase C+10 schema-v1 extension helper: read the OBJECT_ATTRIBUTES
|
||||
/// struct at `obj_attrs_ptr` and return the **raw** path string (trimmed
|
||||
/// of leading/trailing whitespace, NO prefix-strip / case-fold). The
|
||||
/// emitter wants the exact bytes the guest passed so the Phase A diff
|
||||
/// surfaces upstream divergences (e.g. canary calls with one prefix /
|
||||
/// ours with another) rather than masking them via normalization.
|
||||
pub fn object_attributes_raw_name(mem: &GuestMemory, obj_attrs_ptr: u32) -> Option<String> {
|
||||
let raw = read_object_attributes_name(mem, obj_attrs_ptr)?;
|
||||
if raw.is_empty() {
|
||||
return None;
|
||||
}
|
||||
Some(raw.trim().to_string())
|
||||
}
|
||||
|
||||
/// Phase C+11 schema-v1 extension helper: read the rename target
|
||||
/// path from a `NtSetInformationFile` class-10 (`XFileRenameInformation`)
|
||||
/// info buffer. Returns the raw (un-normalized) path string for emitter
|
||||
/// use; null when the buffer is too small or the inner ANSI_STRING is
|
||||
/// empty.
|
||||
///
|
||||
/// Layout per canary `info/file.h:79-83`:
|
||||
/// offset 0: be<u32> replace_existing
|
||||
/// offset 4: be<u32> root_dir_handle
|
||||
/// offset 8: X_ANSI_STRING (u16 Length, u16 MaximumLength, u32 Buffer)
|
||||
/// (16 bytes total — caller is expected to check `info_length >= 16`
|
||||
/// before invoking.)
|
||||
pub fn file_rename_information_raw_target(
|
||||
mem: &GuestMemory,
|
||||
info_ptr: u32,
|
||||
info_length: u32,
|
||||
) -> Option<String> {
|
||||
if info_ptr == 0 || info_length < 16 {
|
||||
return None;
|
||||
}
|
||||
// The ANSI_STRING lives at offset 8 inside the rename-info struct.
|
||||
let raw = read_ansi_string(mem, info_ptr + 8)?;
|
||||
if raw.is_empty() {
|
||||
return None;
|
||||
}
|
||||
Some(raw.trim().to_string())
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
|
||||
849
crates/xenia-kernel/src/phase_b_snapshot.rs
Normal file
849
crates/xenia-kernel/src/phase_b_snapshot.rs
Normal file
@@ -0,0 +1,849 @@
|
||||
//! Phase B initial-state snapshot. Cvar-gated (default off).
|
||||
//!
|
||||
//! Fires once, immediately before the first guest PPC instruction of the
|
||||
//! XEX entry_point executes. Writes a five-file structured state snapshot
|
||||
//! under `<dir>/ours/` plus a `manifest.json` indexing them by SHA-256.
|
||||
//!
|
||||
//! Spec: `xenia-rs/audit-runs/phase-b-state-equivalence/`.
|
||||
//!
|
||||
//! Zero cost when `KernelState::phase_b_snapshot_dir == None`. The single
|
||||
//! hot-path check in `worker_prologue` is one Option-tag test.
|
||||
|
||||
use std::collections::BTreeMap;
|
||||
use std::fs::File;
|
||||
use std::io::Write;
|
||||
use std::path::{Path, PathBuf};
|
||||
use std::sync::atomic::{AtomicBool, Ordering};
|
||||
|
||||
use serde_json::{json, Map, Value};
|
||||
use sha2::{Digest, Sha256};
|
||||
|
||||
use xenia_cpu::PpcContext;
|
||||
use xenia_memory::page_table::AllocationState;
|
||||
use xenia_memory::GuestMemory;
|
||||
|
||||
use crate::objects::KernelObject;
|
||||
use crate::state::{KernelState, ModuleId};
|
||||
|
||||
const SCHEMA_VERSION: u32 = 1;
|
||||
const ENGINE: &str = "ours";
|
||||
|
||||
static CLAIMED: AtomicBool = AtomicBool::new(false);
|
||||
static DONE: AtomicBool = AtomicBool::new(false);
|
||||
|
||||
/// FNV-1a 64-bit identity for kernel objects. Mirrors canary's
|
||||
/// `phase_b_snapshot.cc::StableObjectId`.
|
||||
fn stable_object_id(type_code: u32, raw_handle: u32) -> u64 {
|
||||
let mut bytes = [0u8; 8];
|
||||
bytes[..4].copy_from_slice(&type_code.to_le_bytes());
|
||||
bytes[4..].copy_from_slice(&raw_handle.to_le_bytes());
|
||||
let mut h: u64 = 0xCBF29CE484222325;
|
||||
for b in bytes {
|
||||
h ^= b as u64;
|
||||
h = h.wrapping_mul(0x100000001B3);
|
||||
}
|
||||
h
|
||||
}
|
||||
|
||||
fn sha256_hex(data: &[u8]) -> String {
|
||||
let mut h = Sha256::new();
|
||||
h.update(data);
|
||||
let out = h.finalize();
|
||||
let mut s = String::with_capacity(64);
|
||||
for b in out {
|
||||
s.push_str(&format!("{:02x}", b));
|
||||
}
|
||||
s
|
||||
}
|
||||
|
||||
fn hex32(v: u32) -> String {
|
||||
format!("0x{:08x}", v)
|
||||
}
|
||||
fn hex64(v: u64) -> String {
|
||||
format!("0x{:016x}", v)
|
||||
}
|
||||
|
||||
fn type_code(o: &KernelObject) -> u32 {
|
||||
match o {
|
||||
KernelObject::Event { .. } => 0x01,
|
||||
KernelObject::Mutex { .. } => 0x02,
|
||||
KernelObject::Semaphore { .. } => 0x03,
|
||||
KernelObject::Timer { .. } => 0x04,
|
||||
KernelObject::Thread { .. } => 0x05,
|
||||
KernelObject::File { .. } => 0x06,
|
||||
KernelObject::NotifyListener { .. } => 0x0B,
|
||||
}
|
||||
}
|
||||
|
||||
fn type_name(o: &KernelObject) -> &'static str {
|
||||
match o {
|
||||
KernelObject::Event { .. } => "Event",
|
||||
KernelObject::Mutex { .. } => "Mutex",
|
||||
KernelObject::Semaphore { .. } => "Semaphore",
|
||||
KernelObject::Timer { .. } => "Timer",
|
||||
KernelObject::Thread { .. } => "Thread",
|
||||
KernelObject::File { .. } => "File",
|
||||
KernelObject::NotifyListener { .. } => "NotifyListener",
|
||||
}
|
||||
}
|
||||
|
||||
/// Serialize a `serde_json::Value` to a sort-keys, 2-space-indent UTF-8
|
||||
/// string. Used for byte-deterministic output regardless of HashMap
|
||||
/// iteration order on the construction side — `Map<String, Value>` is
|
||||
/// backed by a `BTreeMap` here so sorting is implicit.
|
||||
fn serialize_sorted(v: &Value) -> String {
|
||||
fn walk(v: &Value, out: &mut String, indent: usize) {
|
||||
let pad = |out: &mut String, n: usize| {
|
||||
for _ in 0..n {
|
||||
out.push_str(" ");
|
||||
}
|
||||
};
|
||||
match v {
|
||||
Value::Null => out.push_str("null"),
|
||||
Value::Bool(b) => out.push_str(if *b { "true" } else { "false" }),
|
||||
Value::Number(n) => out.push_str(&n.to_string()),
|
||||
Value::String(s) => {
|
||||
out.push('"');
|
||||
for c in s.chars() {
|
||||
match c {
|
||||
'"' => out.push_str("\\\""),
|
||||
'\\' => out.push_str("\\\\"),
|
||||
'\n' => out.push_str("\\n"),
|
||||
'\r' => out.push_str("\\r"),
|
||||
'\t' => out.push_str("\\t"),
|
||||
c if (c as u32) < 0x20 => {
|
||||
out.push_str(&format!("\\u{:04x}", c as u32))
|
||||
}
|
||||
c => out.push(c),
|
||||
}
|
||||
}
|
||||
out.push('"');
|
||||
}
|
||||
Value::Array(a) => {
|
||||
if a.is_empty() {
|
||||
out.push_str("[]");
|
||||
return;
|
||||
}
|
||||
out.push_str("[\n");
|
||||
let n = a.len();
|
||||
for (i, item) in a.iter().enumerate() {
|
||||
pad(out, indent + 1);
|
||||
walk(item, out, indent + 1);
|
||||
if i + 1 < n {
|
||||
out.push(',');
|
||||
}
|
||||
out.push('\n');
|
||||
}
|
||||
pad(out, indent);
|
||||
out.push(']');
|
||||
}
|
||||
Value::Object(m) => {
|
||||
if m.is_empty() {
|
||||
out.push_str("{}");
|
||||
return;
|
||||
}
|
||||
let mut keys: Vec<&String> = m.keys().collect();
|
||||
keys.sort();
|
||||
out.push_str("{\n");
|
||||
let n = keys.len();
|
||||
for (i, k) in keys.iter().enumerate() {
|
||||
pad(out, indent + 1);
|
||||
out.push('"');
|
||||
out.push_str(k);
|
||||
out.push_str("\": ");
|
||||
walk(&m[*k], out, indent + 1);
|
||||
if i + 1 < n {
|
||||
out.push(',');
|
||||
}
|
||||
out.push('\n');
|
||||
}
|
||||
pad(out, indent);
|
||||
out.push('}');
|
||||
}
|
||||
}
|
||||
}
|
||||
let mut s = String::new();
|
||||
walk(v, &mut s, 0);
|
||||
s.push('\n');
|
||||
s
|
||||
}
|
||||
|
||||
fn write_file(path: &Path, body: &str) -> std::io::Result<String> {
|
||||
let mut f = File::create(path)?;
|
||||
f.write_all(body.as_bytes())?;
|
||||
f.flush()?;
|
||||
f.sync_all()?;
|
||||
Ok(sha256_hex(body.as_bytes()))
|
||||
}
|
||||
|
||||
// ---------- cpu_state.json ----------
|
||||
|
||||
fn build_cpu_state(ctx: &PpcContext, entry_pc: u32, current_tid: u32) -> Value {
|
||||
let mut o = Map::new();
|
||||
o.insert("schema_version".into(), json!(SCHEMA_VERSION));
|
||||
o.insert("engine".into(), json!(ENGINE));
|
||||
o.insert("pc".into(), json!(hex32(entry_pc)));
|
||||
o.insert("lr".into(), json!(hex64(ctx.lr)));
|
||||
o.insert("ctr".into(), json!(hex64(ctx.ctr)));
|
||||
o.insert("msr".into(), json!(hex64(ctx.msr)));
|
||||
o.insert("vrsave".into(), json!(hex32(ctx.vrsave)));
|
||||
o.insert("fpscr".into(), json!(hex32(ctx.fpscr)));
|
||||
let xer = json!({
|
||||
"ca": ctx.xer_ca as u32,
|
||||
"ov": ctx.xer_ov as u32,
|
||||
"so": ctx.xer_so as u32,
|
||||
"tbc": ctx.xer_tbc as u32,
|
||||
});
|
||||
o.insert("xer".into(), xer);
|
||||
let cr_arr: Vec<Value> = (0..8)
|
||||
.map(|i| {
|
||||
let val = ((ctx.cr() >> (28 - i * 4)) & 0xF) as u8;
|
||||
json!(format!("0x{:x}", val))
|
||||
})
|
||||
.collect();
|
||||
o.insert("cr".into(), Value::Array(cr_arr));
|
||||
let gpr: Vec<Value> = ctx.gpr.iter().map(|&v| json!(hex64(v))).collect();
|
||||
o.insert("gpr".into(), Value::Array(gpr));
|
||||
let fpr: Vec<Value> = ctx.fpr.iter().map(|&v| json!(hex64(v.to_bits()))).collect();
|
||||
o.insert("fpr".into(), Value::Array(fpr));
|
||||
let vr: Vec<Value> = ctx
|
||||
.vr
|
||||
.iter()
|
||||
.map(|v| {
|
||||
let mut s = String::with_capacity(32);
|
||||
for b in &v.bytes {
|
||||
s.push_str(&format!("{:02x}", b));
|
||||
}
|
||||
json!(s)
|
||||
})
|
||||
.collect();
|
||||
o.insert("vr".into(), Value::Array(vr));
|
||||
let mut vscr_s = String::with_capacity(32);
|
||||
for b in &ctx.vscr.bytes {
|
||||
vscr_s.push_str(&format!("{:02x}", b));
|
||||
}
|
||||
o.insert("vscr".into(), json!(vscr_s));
|
||||
o.insert("thread_id".into(), json!(current_tid));
|
||||
o.insert("hw_id".into(), json!(ctx.hw_id as u32));
|
||||
o.insert("stack_base".into(), json!(hex32(0)));
|
||||
o.insert("stack_limit".into(), json!(hex32(0)));
|
||||
o.insert("tls_base".into(), json!(hex32(0)));
|
||||
o.insert("pcr_base".into(), json!(hex32(ctx.gpr[13] as u32)));
|
||||
o.insert("deterministic_skip".into(), json!(["hw_id"]));
|
||||
Value::Object(o)
|
||||
}
|
||||
|
||||
// ---------- memory.json ----------
|
||||
|
||||
struct Region {
|
||||
start: u32,
|
||||
end: u32,
|
||||
protect_bits: u32,
|
||||
sha256: String,
|
||||
}
|
||||
|
||||
fn walk_committed_regions(mem: &GuestMemory) -> Vec<Region> {
|
||||
// Coalesce contiguous committed pages by (allocation_protect,
|
||||
// current_protect, region base/count). Page table is 1 entry per
|
||||
// 4 KiB across the full 4 GiB guest space.
|
||||
const PAGE: u32 = 4096;
|
||||
let mut regions = Vec::new();
|
||||
let mut cur_start: Option<(u32, u32)> = None;
|
||||
let mut last_protect: u32 = 0;
|
||||
let mut addr: u64 = 0;
|
||||
while addr < 0x1_0000_0000 {
|
||||
let a = addr as u32;
|
||||
let entry = mem.page_entry(a);
|
||||
let committed = entry
|
||||
.map(|e| e.state().contains(AllocationState::COMMIT))
|
||||
.unwrap_or(false);
|
||||
let protect_bits = entry
|
||||
.map(|e| e.current_protect().bits())
|
||||
.unwrap_or(0);
|
||||
if committed {
|
||||
match cur_start {
|
||||
None => {
|
||||
cur_start = Some((a, a));
|
||||
last_protect = protect_bits;
|
||||
}
|
||||
Some((start, _end)) => {
|
||||
if protect_bits == last_protect {
|
||||
cur_start = Some((start, a));
|
||||
} else {
|
||||
// Protection change → flush prior region.
|
||||
let prev_start = start;
|
||||
let prev_end = cur_start.unwrap().1 + PAGE;
|
||||
let bytes = read_bytes(mem, prev_start, prev_end - prev_start);
|
||||
regions.push(Region {
|
||||
start: prev_start,
|
||||
end: prev_end,
|
||||
protect_bits: last_protect,
|
||||
sha256: sha256_hex(&bytes),
|
||||
});
|
||||
cur_start = Some((a, a));
|
||||
last_protect = protect_bits;
|
||||
}
|
||||
}
|
||||
}
|
||||
} else if let Some((start, end)) = cur_start.take() {
|
||||
let end_addr = end + PAGE;
|
||||
let bytes = read_bytes(mem, start, end_addr - start);
|
||||
regions.push(Region {
|
||||
start,
|
||||
end: end_addr,
|
||||
protect_bits: last_protect,
|
||||
sha256: sha256_hex(&bytes),
|
||||
});
|
||||
}
|
||||
addr += PAGE as u64;
|
||||
}
|
||||
if let Some((start, end)) = cur_start.take() {
|
||||
let end_addr = end + PAGE;
|
||||
let bytes = read_bytes(mem, start, end_addr - start);
|
||||
regions.push(Region {
|
||||
start,
|
||||
end: end_addr,
|
||||
protect_bits: last_protect,
|
||||
sha256: sha256_hex(&bytes),
|
||||
});
|
||||
}
|
||||
regions
|
||||
}
|
||||
|
||||
fn read_bytes(mem: &GuestMemory, start: u32, len: u32) -> Vec<u8> {
|
||||
let mut v = vec![0u8; len as usize];
|
||||
let base = mem.membase();
|
||||
if base.is_null() {
|
||||
return v;
|
||||
}
|
||||
// SAFETY: pages in [start, start+len) are confirmed committed by the
|
||||
// caller; reading them is well-defined. We snapshot bytes at a
|
||||
// moment when no guest thread is executing.
|
||||
unsafe {
|
||||
let src = base.add(start as usize);
|
||||
std::ptr::copy_nonoverlapping(src, v.as_mut_ptr(), len as usize);
|
||||
}
|
||||
v
|
||||
}
|
||||
|
||||
fn build_memory(
|
||||
state: &KernelState,
|
||||
mem: &GuestMemory,
|
||||
dump_section_content: bool,
|
||||
) -> Value {
|
||||
let mut o = Map::new();
|
||||
o.insert("schema_version".into(), json!(SCHEMA_VERSION));
|
||||
o.insert("engine".into(), json!(ENGINE));
|
||||
o.insert("page_size".into(), json!(4096));
|
||||
o.insert("guest_address_space_bytes".into(), json!(0x1_0000_0000u64));
|
||||
|
||||
// Named regions: XEX image, main thread stack, PCR, TLS. Mirrors
|
||||
// canary's BuildMemory exactly so the diff tool compares positional
|
||||
// entries one-to-one.
|
||||
let mut regions = Vec::new();
|
||||
let hash_region = |start: u32, len: u32| -> Region {
|
||||
let bytes = read_bytes(mem, start, len);
|
||||
Region {
|
||||
start,
|
||||
end: start + len,
|
||||
protect_bits: 0,
|
||||
sha256: sha256_hex(&bytes),
|
||||
}
|
||||
};
|
||||
if state.image_base != 0 {
|
||||
// Walk forward while mapped — bounded by 64 MiB to avoid runaway
|
||||
// if is_mapped is loose with COMMIT semantics.
|
||||
let mut size: u32 = 0;
|
||||
let mut a = state.image_base;
|
||||
let limit = state.image_base.saturating_add(64 * 1024 * 1024);
|
||||
while a < limit && mem.is_mapped(a) {
|
||||
size = size.wrapping_add(4096);
|
||||
let next = a.wrapping_add(4096);
|
||||
if next < a {
|
||||
break;
|
||||
}
|
||||
a = next;
|
||||
}
|
||||
if size != 0 {
|
||||
regions.push(hash_region(state.image_base, size));
|
||||
}
|
||||
}
|
||||
// Stack/PCR/TLS — derived from the entry thread's GuestThread.
|
||||
if let Some(r) = state.scheduler.current {
|
||||
let th = state.scheduler.thread(r);
|
||||
if th.stack_size > 0 && th.stack_base >= th.stack_size {
|
||||
// stack_base in ours is the LOW address (stack grows down from
|
||||
// stack_base + stack_size). Hash the full alloc'd range.
|
||||
regions.push(hash_region(th.stack_base, th.stack_size));
|
||||
}
|
||||
if th.pcr_base != 0 {
|
||||
regions.push(hash_region(th.pcr_base, 0x1000));
|
||||
}
|
||||
if th.tls_base != 0 {
|
||||
regions.push(hash_region(th.tls_base, 0x1000));
|
||||
}
|
||||
}
|
||||
regions.sort_by_key(|r| (r.start, r.end));
|
||||
|
||||
let mut committed_pages: u64 = 0;
|
||||
let mut regions_json = Vec::new();
|
||||
for r in ®ions {
|
||||
committed_pages += ((r.end - r.start) / 4096) as u64;
|
||||
let mut rm = Map::new();
|
||||
rm.insert("start".into(), json!(hex32(r.start)));
|
||||
rm.insert("end".into(), json!(hex32(r.end)));
|
||||
rm.insert("byte_count".into(), json!(r.end - r.start));
|
||||
rm.insert("protect".into(), json!(r.protect_bits));
|
||||
rm.insert("sha256".into(), json!(r.sha256));
|
||||
rm.insert("section_kind".into(), Value::Null);
|
||||
regions_json.push(Value::Object(rm));
|
||||
}
|
||||
o.insert("regions".into(), Value::Array(regions_json));
|
||||
o.insert("committed_pages_total".into(), json!(committed_pages));
|
||||
|
||||
// Note: a full page-table walk inventory was removed — the
|
||||
// `mem.page_entry(addr).state().contains(COMMIT)` check returns
|
||||
// true for some addresses whose underlying host pages aren't
|
||||
// backed (likely due to interactions with reserved-vs-committed
|
||||
// bookkeeping during early bring-up). Reading via raw pointer at
|
||||
// those addresses faults. Phase B's named-regions list above
|
||||
// captures the equivalence-relevant memory anyway.
|
||||
o.insert("regions_walked".into(), Value::Array(Vec::new()));
|
||||
|
||||
// Single synthetic heap descriptor — ours doesn't model canary's
|
||||
// heap split; the diff tool sorts heaps by `base` so a single-heap
|
||||
// engine vs N-heap engine is itself a σ-class observation captured
|
||||
// by the diff. Mirror canary's heap descriptors: 4 entries.
|
||||
let heap_bases = [0x0000_0000u32, 0x4000_0000, 0x8000_0000, 0x9000_0000];
|
||||
let mut heaps = Vec::new();
|
||||
for base in heap_bases {
|
||||
let mut heap = Map::new();
|
||||
heap.insert("name".into(), json!(format!("v{:08x}", base)));
|
||||
heap.insert("base".into(), json!(hex32(base)));
|
||||
heap.insert("size".into(), json!(hex32(0x4000_0000)));
|
||||
heap.insert("page_size".into(), json!(4096));
|
||||
let mut hist = Map::new();
|
||||
// Crude: count committed pages within this heap by sampling
|
||||
// `is_mapped` across the range. O(heap_size / PAGE) — bounded.
|
||||
let mut committed: u64 = 0;
|
||||
let mut addr = base;
|
||||
let end = base.saturating_add(0x4000_0000);
|
||||
while addr < end {
|
||||
if mem.is_mapped(addr) {
|
||||
committed += 1;
|
||||
}
|
||||
let next = addr.wrapping_add(4096);
|
||||
if next < addr {
|
||||
break;
|
||||
}
|
||||
addr = next;
|
||||
}
|
||||
hist.insert("committed".into(), json!(committed));
|
||||
heap.insert("page_state_histogram".into(), Value::Object(hist));
|
||||
heaps.push(Value::Object(heap));
|
||||
}
|
||||
o.insert("heaps".into(), Value::Array(heaps));
|
||||
|
||||
if dump_section_content {
|
||||
let secs: Vec<Value> = regions
|
||||
.iter()
|
||||
.map(|r| {
|
||||
json!({
|
||||
"start": hex32(r.start),
|
||||
"end": hex32(r.end),
|
||||
"sha256": r.sha256.clone(),
|
||||
"content_b64": "",
|
||||
})
|
||||
})
|
||||
.collect();
|
||||
o.insert("section_contents".into(), Value::Array(secs));
|
||||
} else {
|
||||
o.insert("section_contents".into(), Value::Null);
|
||||
}
|
||||
o.insert("deterministic_skip".into(), json!(["host_base_pointer"]));
|
||||
Value::Object(o)
|
||||
}
|
||||
|
||||
// ---------- kernel.json ----------
|
||||
|
||||
fn build_kernel(state: &KernelState, entry_pc: u32) -> Value {
|
||||
let mut o = Map::new();
|
||||
o.insert("schema_version".into(), json!(SCHEMA_VERSION));
|
||||
o.insert("engine".into(), json!(ENGINE));
|
||||
|
||||
let mut entries: Vec<(u64, Value)> = Vec::new();
|
||||
for (handle, obj) in &state.objects {
|
||||
let tc = type_code(obj);
|
||||
let sid = stable_object_id(tc, *handle);
|
||||
let mut e = Map::new();
|
||||
e.insert(
|
||||
"handle_semantic_id".into(),
|
||||
json!(format!("{:016x}", sid)),
|
||||
);
|
||||
e.insert("raw_handle_id".into(), json!(hex32(*handle)));
|
||||
e.insert("type".into(), json!(type_name(obj)));
|
||||
e.insert("type_code".into(), json!(tc));
|
||||
e.insert("name".into(), Value::Null);
|
||||
let mut details = Map::new();
|
||||
if let KernelObject::Thread { id, hw_id, exit_code, .. } = obj {
|
||||
details.insert("thread_id".into(), json!(*id));
|
||||
details.insert(
|
||||
"is_entry_thread".into(),
|
||||
json!(*id == xenia_cpu::scheduler::INITIAL_GUEST_TID),
|
||||
);
|
||||
details.insert("hw_id".into(), json!(hw_id.map(|v| v as u32)));
|
||||
details.insert("exit_code".into(), json!(*exit_code));
|
||||
details.insert(
|
||||
"entry_pc".into(),
|
||||
json!(hex32(if *id == xenia_cpu::scheduler::INITIAL_GUEST_TID {
|
||||
entry_pc
|
||||
} else {
|
||||
0
|
||||
})),
|
||||
);
|
||||
}
|
||||
e.insert("details".into(), Value::Object(details));
|
||||
entries.push((sid, Value::Object(e)));
|
||||
}
|
||||
entries.sort_by_key(|(s, _)| *s);
|
||||
let objs: Vec<Value> = entries.into_iter().map(|(_, v)| v).collect();
|
||||
o.insert("objects".into(), Value::Array(objs));
|
||||
|
||||
o.insert("handle_name_table".into(), json!([]));
|
||||
o.insert("notification_listeners".into(), json!([]));
|
||||
|
||||
// Exports — list module/ord/name for every registered handler, hash
|
||||
// the canonical sorted "<module>!<name>" list. KernelState doesn't
|
||||
// expose `exports` publicly; we walk the published export-name
|
||||
// accessor for each (module, ordinal) we know about. As a pragmatic
|
||||
// shortcut: emit the count via `KernelState::export_name` probes.
|
||||
// For the diff this is informational; the sha256 over the sorted
|
||||
// name list is the canonical comparison key.
|
||||
let mut export_names: Vec<String> = Vec::new();
|
||||
for module in &[ModuleId::Xboxkrnl, ModuleId::Xam, ModuleId::Xbdm] {
|
||||
let module_str = match module {
|
||||
ModuleId::Xboxkrnl => "xboxkrnl.exe",
|
||||
ModuleId::Xam => "xam.xex",
|
||||
ModuleId::Xbdm => "xbdm.xex",
|
||||
};
|
||||
for ord in 1..=0x1000u32 {
|
||||
if let Some(name) = state.export_name(*module, ord) {
|
||||
export_names.push(format!("{}!{}", module_str, name));
|
||||
}
|
||||
}
|
||||
}
|
||||
export_names.sort();
|
||||
let joined = export_names.join("\n");
|
||||
let sha = sha256_hex(joined.as_bytes());
|
||||
let sample: Vec<Value> = export_names.iter().take(32).map(|n| json!(n)).collect();
|
||||
o.insert(
|
||||
"exports_registered_count".into(),
|
||||
json!(export_names.len() as u64),
|
||||
);
|
||||
o.insert("exports_registered_sha256".into(), json!(sha));
|
||||
o.insert("exports_registered_sample".into(), Value::Array(sample));
|
||||
|
||||
o.insert(
|
||||
"deterministic_skip".into(),
|
||||
json!(["raw_handle_id", "exports_registered_count"]),
|
||||
);
|
||||
Value::Object(o)
|
||||
}
|
||||
|
||||
// ---------- vfs.json ----------
|
||||
|
||||
fn build_vfs(state: &KernelState) -> Value {
|
||||
let mut o = Map::new();
|
||||
o.insert("schema_version".into(), json!(SCHEMA_VERSION));
|
||||
o.insert("engine".into(), json!(ENGINE));
|
||||
|
||||
// Canonical probe set — same order as canary's, sorted alphabetically
|
||||
// so the diff tool can compare positionally.
|
||||
let mut probe_paths: Vec<&str> = vec![
|
||||
"\\Device\\Cdrom0",
|
||||
"\\Device\\Cdrom0\\default.xex",
|
||||
"\\Device\\Cdrom0\\dat",
|
||||
"\\Device\\Cdrom0\\dat\\movie",
|
||||
"\\Device\\Cdrom0\\dat\\movie\\opening.bik",
|
||||
"game:\\default.xex",
|
||||
"game:\\dat",
|
||||
"cache:\\",
|
||||
"cache:\\nonexistent_probe",
|
||||
"\\Device\\HardDisk0\\Partition1",
|
||||
];
|
||||
probe_paths.sort();
|
||||
let mut probes = Vec::new();
|
||||
for p in &probe_paths {
|
||||
let (resolved, is_dir, size) = probe_vfs(state, p);
|
||||
probes.push(json!({
|
||||
"path": p,
|
||||
"resolved": resolved,
|
||||
"is_directory": is_dir,
|
||||
"size": size,
|
||||
}));
|
||||
}
|
||||
o.insert("resolve_path_probes".into(), Value::Array(probes));
|
||||
|
||||
o.insert(
|
||||
"mounted_devices_observed_count".into(),
|
||||
json!(state.vfs.is_some() as u32),
|
||||
);
|
||||
|
||||
// cache_root_listing — recursive walk of cache_root if set. Empty
|
||||
// post-AUDIT-038-wipe.
|
||||
let listing = if let Some(root) = &state.cache_root {
|
||||
walk_cache_root(root)
|
||||
} else {
|
||||
Vec::new()
|
||||
};
|
||||
o.insert("cache_root_listing".into(), Value::Array(listing));
|
||||
|
||||
o.insert("deterministic_skip".into(), json!(["host_path_realpath"]));
|
||||
Value::Object(o)
|
||||
}
|
||||
|
||||
fn probe_vfs(state: &KernelState, path: &str) -> (bool, Option<bool>, Option<u64>) {
|
||||
let Some(vfs) = state.vfs.as_ref() else {
|
||||
return (false, None, None);
|
||||
};
|
||||
// Strip leading device prefix for ours's API (relative paths only).
|
||||
let normalized = if let Some(stripped) = path.strip_prefix("\\Device\\Cdrom0\\") {
|
||||
stripped
|
||||
} else if let Some(stripped) = path.strip_prefix("game:\\") {
|
||||
stripped
|
||||
} else if path == "\\Device\\Cdrom0" || path == "game:\\" || path == "cache:\\" {
|
||||
// Root listing.
|
||||
match vfs.list_root() {
|
||||
Ok(_) => return (true, Some(true), None),
|
||||
Err(_) => return (false, None, None),
|
||||
}
|
||||
} else {
|
||||
return (false, None, None);
|
||||
};
|
||||
match vfs.stat(normalized) {
|
||||
Ok(entry) => (true, Some(entry.is_directory), Some(entry.size)),
|
||||
Err(_) => (false, None, None),
|
||||
}
|
||||
}
|
||||
|
||||
fn walk_cache_root(root: &Path) -> Vec<Value> {
|
||||
fn walk(root: &Path, dir: &Path, out: &mut Vec<Value>) {
|
||||
let Ok(entries) = std::fs::read_dir(dir) else {
|
||||
return;
|
||||
};
|
||||
for entry in entries.flatten() {
|
||||
let p = entry.path();
|
||||
if p.is_dir() {
|
||||
walk(root, &p, out);
|
||||
} else if let Ok(bytes) = std::fs::read(&p) {
|
||||
let rel = p.strip_prefix(root).unwrap_or(&p).to_string_lossy().to_string();
|
||||
out.push(json!({
|
||||
"relpath": rel,
|
||||
"size": bytes.len() as u64,
|
||||
"sha256": sha256_hex(&bytes),
|
||||
}));
|
||||
}
|
||||
}
|
||||
}
|
||||
let mut out = Vec::new();
|
||||
walk(root, root, &mut out);
|
||||
out.sort_by(|a, b| a["relpath"].as_str().cmp(&b["relpath"].as_str()));
|
||||
out
|
||||
}
|
||||
|
||||
// ---------- config.json ----------
|
||||
|
||||
fn build_config(state: &KernelState, mem: &GuestMemory, entry_pc: u32) -> Value {
|
||||
let mut o = Map::new();
|
||||
o.insert("schema_version".into(), json!(SCHEMA_VERSION));
|
||||
o.insert("engine".into(), json!(ENGINE));
|
||||
o.insert("build_id".into(), json!("ours-phaseB"));
|
||||
o.insert("iso_path".into(), json!(""));
|
||||
o.insert("xex_entry_point".into(), json!(hex32(entry_pc)));
|
||||
o.insert("xex_image_base".into(), json!(hex32(state.image_base)));
|
||||
|
||||
// image_size: walk forward from image_base until we hit an uncommitted
|
||||
// page. This matches canary's XexModule::image_size() semantics
|
||||
// closely enough for an entry-point snapshot.
|
||||
let mut image_size: u32 = 0;
|
||||
let mut a = state.image_base;
|
||||
while mem.is_mapped(a) {
|
||||
image_size = image_size.wrapping_add(4096);
|
||||
let next = a.wrapping_add(4096);
|
||||
if next < a {
|
||||
break;
|
||||
}
|
||||
a = next;
|
||||
}
|
||||
o.insert("xex_image_size".into(), json!(image_size));
|
||||
|
||||
let image_bytes = read_bytes(mem, state.image_base, image_size);
|
||||
o.insert(
|
||||
"image_loaded_sha256".into(),
|
||||
json!(sha256_hex(&image_bytes)),
|
||||
);
|
||||
o.insert(
|
||||
"xex_header_sha256".into(),
|
||||
json!(String::from("0").repeat(64)),
|
||||
);
|
||||
|
||||
let mut cvars = Map::new();
|
||||
cvars.insert(
|
||||
"phase_b_snapshot_dir".into(),
|
||||
json!(state
|
||||
.phase_b_snapshot_dir
|
||||
.as_ref()
|
||||
.map(|p| p.to_string_lossy().to_string())
|
||||
.unwrap_or_default()),
|
||||
);
|
||||
cvars.insert(
|
||||
"phase_b_snapshot_and_exit".into(),
|
||||
json!(state.phase_b_snapshot_and_exit),
|
||||
);
|
||||
cvars.insert(
|
||||
"phase_b_dump_section_content".into(),
|
||||
json!(state.phase_b_dump_section_content),
|
||||
);
|
||||
o.insert("cvars".into(), Value::Object(cvars));
|
||||
|
||||
o.insert("host_ns_at_snapshot".into(), json!(0u64));
|
||||
o.insert("wall_clock_iso8601".into(), json!("epoch:0"));
|
||||
o.insert(
|
||||
"deterministic_skip".into(),
|
||||
json!([
|
||||
"host_ns_at_snapshot",
|
||||
"wall_clock_iso8601",
|
||||
"build_id",
|
||||
"iso_path",
|
||||
"cvars.phase_b_snapshot_dir"
|
||||
]),
|
||||
);
|
||||
Value::Object(o)
|
||||
}
|
||||
|
||||
// ---------- orchestrator ----------
|
||||
|
||||
/// Called from `worker_prologue` once per slot visit. Cheap no-op when
|
||||
/// `phase_b_snapshot_dir == None` (the common case).
|
||||
pub fn fire_if_entry_thread(
|
||||
state: &mut KernelState,
|
||||
mem: &GuestMemory,
|
||||
pc: u32,
|
||||
current_tid: u32,
|
||||
) {
|
||||
// Hot fast path — empty Option is the default.
|
||||
let Some(dir) = state.phase_b_snapshot_dir.clone() else {
|
||||
return;
|
||||
};
|
||||
if DONE.load(Ordering::Acquire) {
|
||||
return;
|
||||
}
|
||||
if pc != state.entry_pc || current_tid != xenia_cpu::scheduler::INITIAL_GUEST_TID {
|
||||
return;
|
||||
}
|
||||
if CLAIMED
|
||||
.compare_exchange(false, true, Ordering::AcqRel, Ordering::Acquire)
|
||||
.is_err()
|
||||
{
|
||||
return;
|
||||
}
|
||||
write_snapshot(state, mem, &dir, pc, current_tid);
|
||||
DONE.store(true, Ordering::Release);
|
||||
if state.phase_b_snapshot_and_exit {
|
||||
// Use libc::_exit so we skip Rust dtors (and the cleanup ordering
|
||||
// that comes with them). All snapshot files have been
|
||||
// fsync()'d in write_file, so the on-disk state is durable.
|
||||
unsafe {
|
||||
libc::_exit(0);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn write_snapshot(
|
||||
state: &KernelState,
|
||||
mem: &GuestMemory,
|
||||
dir: &Path,
|
||||
entry_pc: u32,
|
||||
current_tid: u32,
|
||||
) {
|
||||
let engine_dir: PathBuf = dir.join("ours");
|
||||
if let Err(e) = std::fs::create_dir_all(&engine_dir) {
|
||||
tracing::warn!(
|
||||
"phase_b_snapshot: failed to create {:?}: {} — snapshot aborted",
|
||||
engine_dir,
|
||||
e
|
||||
);
|
||||
return;
|
||||
}
|
||||
|
||||
let ctx = state
|
||||
.scheduler
|
||||
.current_hw_id()
|
||||
.map(|hw| state.scheduler.ctx(hw));
|
||||
let cpu = match ctx {
|
||||
Some(ctx) => build_cpu_state(ctx, entry_pc, current_tid),
|
||||
None => {
|
||||
tracing::warn!("phase_b_snapshot: no current ctx; aborting");
|
||||
return;
|
||||
}
|
||||
};
|
||||
|
||||
let memv = build_memory(state, mem, state.phase_b_dump_section_content);
|
||||
let kern = build_kernel(state, entry_pc);
|
||||
let vfs = build_vfs(state);
|
||||
let cfg = build_config(state, mem, entry_pc);
|
||||
|
||||
let mut hashes: BTreeMap<String, String> = BTreeMap::new();
|
||||
for (name, value) in [
|
||||
("cpu_state.json", &cpu),
|
||||
("memory.json", &memv),
|
||||
("kernel.json", &kern),
|
||||
("vfs.json", &vfs),
|
||||
("config.json", &cfg),
|
||||
] {
|
||||
let body = serialize_sorted(value);
|
||||
match write_file(&engine_dir.join(name), &body) {
|
||||
Ok(h) => {
|
||||
hashes.insert(name.to_string(), h);
|
||||
}
|
||||
Err(e) => {
|
||||
tracing::warn!("phase_b_snapshot: write {} failed: {}", name, e);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
let mut manifest_files = Map::new();
|
||||
for (k, v) in &hashes {
|
||||
manifest_files.insert(k.clone(), json!(v));
|
||||
}
|
||||
let manifest = json!({
|
||||
"schema_version": SCHEMA_VERSION,
|
||||
"engine": ENGINE,
|
||||
"files": Value::Object(manifest_files),
|
||||
});
|
||||
let body = serialize_sorted(&manifest);
|
||||
let _ = write_file(&engine_dir.join("manifest.json"), &body);
|
||||
|
||||
// Phase C: when dump_section_content is on, write raw bytes of the
|
||||
// XEX image region to <engine_dir>/image.bin. This is the only
|
||||
// region positionally matched between canary and ours, so it's the
|
||||
// only one suitable for byte-level diff.
|
||||
if state.phase_b_dump_section_content && state.image_base != 0 {
|
||||
let mut sz: u32 = 0;
|
||||
let mut a = state.image_base;
|
||||
while mem.is_mapped(a) {
|
||||
sz = sz.wrapping_add(4096);
|
||||
let next = a.wrapping_add(4096);
|
||||
if next < a {
|
||||
break;
|
||||
}
|
||||
a = next;
|
||||
}
|
||||
if sz > 0 {
|
||||
let bytes = read_bytes(mem, state.image_base, sz);
|
||||
if let Err(e) = std::fs::write(engine_dir.join("image.bin"), &bytes) {
|
||||
tracing::warn!("phase_b_snapshot: image.bin write failed: {}", e);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
@@ -30,7 +30,7 @@ pub fn register_exports(state: &mut KernelState) {
|
||||
|
||||
// Task
|
||||
state.register_export(Xam, 0x01AF, "XamTaskSchedule", xam_task_schedule);
|
||||
state.register_export(Xam, 0x01B1, "XamTaskCloseHandle", stub_success);
|
||||
state.register_export(Xam, 0x01B1, "XamTaskCloseHandle", xam_task_close_handle);
|
||||
state.register_export(Xam, 0x01B3, "XamTaskShouldExit", stub_return_zero);
|
||||
|
||||
// Alloc
|
||||
@@ -56,7 +56,7 @@ pub fn register_exports(state: &mut KernelState) {
|
||||
state.register_export(Xam, 0x0258, "XamContentCreate", stub_success);
|
||||
state.register_export(Xam, 0x025A, "XamContentClose", stub_success);
|
||||
state.register_export(Xam, 0x025B, "XamContentDelete", stub_success);
|
||||
state.register_export(Xam, 0x025C, "XamContentCreateEnumerator", stub_success);
|
||||
state.register_export(Xam, 0x025C, "XamContentCreateEnumerator", xam_content_create_enumerator);
|
||||
state.register_export(Xam, 0x025E, "XamContentGetDeviceData", stub_success);
|
||||
state.register_export(Xam, 0x025F, "XamContentGetDeviceName", stub_success);
|
||||
state.register_export(Xam, 0x0260, "XamContentSetThumbnail", stub_success);
|
||||
@@ -80,7 +80,10 @@ pub fn register_exports(state: &mut KernelState) {
|
||||
state.register_export(Xam, 0x02BC, "XamShowSigninUI", stub_success);
|
||||
state.register_export(Xam, 0x02C1, "XamShowKeyboardUI", stub_success);
|
||||
state.register_export(Xam, 0x02CB, "XamShowDeviceSelectorUI", stub_success);
|
||||
state.register_export(Xam, 0x02D5, "XamShowGamerCardUIForXUID", stub_success);
|
||||
// Class-E in canary (table entry only, no DECLARE_XAM_EXPORT shim) — canary's
|
||||
// syscall-thunk path emits no Phase A events. Mirror via
|
||||
// `register_unimplemented_export` so ours stays silent too. C+6.5-pattern fix.
|
||||
state.register_unimplemented_export(Xam, 0x02D5, "XamShowGamerCardUIForXUID", stub_success);
|
||||
state.register_export(Xam, 0x02D9, "XamShowDirtyDiscErrorUI", stub_success);
|
||||
state.register_export(Xam, 0x02DC, "XamShowMessageBoxUIEx", stub_success);
|
||||
|
||||
@@ -262,6 +265,13 @@ fn xam_task_schedule(ctx: &mut PpcContext, mem: &GuestMemory, state: &mut Kernel
|
||||
if let Some(KernelObject::Thread { hw_id: slot, .. }) = state.objects.get_mut(&handle) {
|
||||
*slot = Some(hw_id);
|
||||
}
|
||||
// Phase C+16: thread self-reference. See `ex_create_thread`.
|
||||
// The canary path `XamTaskSchedule_entry` → `thread->Create()`
|
||||
// → `RetainHandle()` (xthread.cc:414) installs this; without
|
||||
// it, `XamTaskCloseHandle` → `NtClose` destroys the handle
|
||||
// prematurely. This is the exact Phase A idx=102168 fix on
|
||||
// the main chain.
|
||||
state.retain_handle(handle);
|
||||
if handle_ptr != 0 {
|
||||
mem.write_u32(handle_ptr, handle);
|
||||
}
|
||||
@@ -284,6 +294,41 @@ fn xam_task_schedule(ctx: &mut PpcContext, mem: &GuestMemory, state: &mut Kernel
|
||||
}
|
||||
}
|
||||
|
||||
/// `XamTaskCloseHandle(handle)` — release the handle minted by
|
||||
/// `XamTaskSchedule`. Mirrors xenia-canary's `XamTaskCloseHandle_entry`
|
||||
/// (xam_task.cc:83-93): defers to `NtClose(handle)`, returns `true` (=1)
|
||||
/// on success and `false` (=0) on `XFAILED(NtClose status)`. Canary's
|
||||
/// `ReleaseHandle` returns `X_STATUS_INVALID_HANDLE` for unknown handles
|
||||
/// (object_table.cc:189-208); we mirror by checking handle-table
|
||||
/// membership and on hit perform the same ref-counted release
|
||||
/// `exports::nt_close` does (object_table.cc:194-208). Reading-error
|
||||
/// #28 discipline: body shape verified against canary source, not
|
||||
/// inferred from NT documentation.
|
||||
fn xam_task_close_handle(
|
||||
ctx: &mut PpcContext,
|
||||
_mem: &GuestMemory,
|
||||
state: &mut KernelState,
|
||||
) {
|
||||
let handle = ctx.gpr[3] as u32;
|
||||
// Phase C+19: validate against the canonical slot (alias-aware) so a
|
||||
// duplicated thread-task handle still passes the XFAILED check.
|
||||
let canonical = state.resolve_handle(handle);
|
||||
if !state.objects.contains_key(&canonical) && !state.handle_refcount.contains_key(&handle) {
|
||||
// XFAILED(STATUS_INVALID_HANDLE) path — canary sets last-error
|
||||
// and returns false. We don't model XThread last-error yet, so
|
||||
// surface just the false return; sufficient for Phase A parity
|
||||
// (canary's emitter records the dword return value, not
|
||||
// last-error).
|
||||
ctx.gpr[3] = 0;
|
||||
return;
|
||||
}
|
||||
// Phase C+19: route through the shared close path so the alias map,
|
||||
// slot count, async-file side-table, and handle.destroy event are all
|
||||
// handled symmetrically with `nt_close`.
|
||||
crate::exports::close_handle_internal(state, handle);
|
||||
ctx.gpr[3] = 1;
|
||||
}
|
||||
|
||||
// ===== Alloc =====
|
||||
|
||||
fn xam_alloc(ctx: &mut PpcContext, mem: &GuestMemory, state: &mut KernelState) {
|
||||
@@ -306,20 +351,52 @@ fn xam_alloc(ctx: &mut PpcContext, mem: &GuestMemory, state: &mut KernelState) {
|
||||
|
||||
// ===== User =====
|
||||
|
||||
/// Canary default profile XUID — `0xB13EBABEBABEBABE` per
|
||||
/// `xenia-canary/src/xenia/kernel/xam/user_profile.cc` defaults. The
|
||||
/// `0xC000000000000000` mask bits tag the XUID as a local profile, which
|
||||
/// is what title 58410A1F probes via `xuid & 0x00C0000000000000` (per the
|
||||
/// comment in `UserProfile::UserProfile`). Used by `XamUserGetXUID` /
|
||||
/// `XamUserGetSigninInfo` / friends so signed-in slot 0 reports a real
|
||||
/// id instead of zero.
|
||||
pub const DEFAULT_USER_XUID: u64 = 0xB13E_BABE_BABE_BABE;
|
||||
|
||||
/// Canary default gamertag.
|
||||
pub const DEFAULT_USER_GAMERTAG: &str = "User";
|
||||
|
||||
fn xam_user_get_xuid(ctx: &mut PpcContext, mem: &GuestMemory, _state: &mut KernelState) {
|
||||
// r3 = user_index, r4 = xuid_ptr
|
||||
let user_index = ctx.gpr[3] as u32;
|
||||
let xuid_ptr = ctx.gpr[4] as u32;
|
||||
let xuid = if user_index == 0 { DEFAULT_USER_XUID } else { 0 };
|
||||
if xuid_ptr != 0 {
|
||||
mem.write_u64(xuid_ptr, 0); // No XUID
|
||||
mem.write_u64(xuid_ptr, xuid);
|
||||
}
|
||||
ctx.gpr[3] = 0;
|
||||
}
|
||||
|
||||
fn xam_user_get_name(ctx: &mut PpcContext, mem: &GuestMemory, _state: &mut KernelState) {
|
||||
// r3 = user_index, r4 = buffer, r5 = buffer_size
|
||||
let user_index = ctx.gpr[3] as u32;
|
||||
let buffer = ctx.gpr[4] as u32;
|
||||
if buffer != 0 {
|
||||
mem.write_u8(buffer, 0); // Empty string
|
||||
let buffer_size = ctx.gpr[5] as u32;
|
||||
if buffer == 0 || buffer_size == 0 {
|
||||
ctx.gpr[3] = 0;
|
||||
return;
|
||||
}
|
||||
if user_index == 0 {
|
||||
// Write the canary default gamertag, NUL-terminated, truncated to
|
||||
// fit `buffer_size`. Canary returns the gamertag from the active
|
||||
// profile; ours uses the fixed default.
|
||||
let bytes = DEFAULT_USER_GAMERTAG.as_bytes();
|
||||
let n = (bytes.len() as u32).min(buffer_size.saturating_sub(1));
|
||||
for i in 0..n {
|
||||
mem.write_u8(buffer + i, bytes[i as usize]);
|
||||
}
|
||||
mem.write_u8(buffer + n, 0);
|
||||
} else {
|
||||
// No profile in slots 1-3; canary's `XamUserGetName` returns
|
||||
// empty string in that case.
|
||||
mem.write_u8(buffer, 0);
|
||||
}
|
||||
ctx.gpr[3] = 0;
|
||||
}
|
||||
@@ -335,6 +412,104 @@ fn xam_user_get_signin_state(ctx: &mut PpcContext, _mem: &GuestMemory, _state: &
|
||||
ctx.gpr[3] = if user_index == 0 { 1 } else { 0 };
|
||||
}
|
||||
|
||||
// ===== Content =====
|
||||
|
||||
/// `XamContentCreateEnumerator(user_index, device_id, content_type,
|
||||
/// content_flags, items_per_enumerate, buffer_size_ptr, handle_out)`.
|
||||
/// Mirrors xenia-canary `XamContentCreateEnumerator_entry`
|
||||
/// (xam_content.cc:129-220). Reading-error #28 discipline applied: body
|
||||
/// shape verified against canary source.
|
||||
///
|
||||
/// Canary's normal-path success returns `X_ERROR_SUCCESS` (0) with a
|
||||
/// fresh enumerator handle in `*handle_out`. The Phase A oracle at
|
||||
/// `tid_event_idx=102197` shows canary returning `X_ERROR_NO_SUCH_USER`
|
||||
/// (`0x525`, 1317) with empty side_effects — the call hit the
|
||||
/// `if (!user) return X_ERROR_NO_SUCH_USER;` early-return at
|
||||
/// xam_content.cc:153-155 because no profile is installed in canary's
|
||||
/// default `--mute=true` config (no `--profile_slot_*` flags).
|
||||
///
|
||||
/// Ours has no profile-manager state, so all `user_index != 0xFE`
|
||||
/// queries miss. Mirror the early-return: write `*buffer_size_ptr` per
|
||||
/// canary line 145-147 (which executes *before* the user check) and
|
||||
/// return `X_ERROR_NO_SUCH_USER`. Implementing real content enumeration
|
||||
/// is an XAM-content-subsystem session (escalation-tier scope), not
|
||||
/// this fix.
|
||||
///
|
||||
/// Side note on internal consistency: ours's `xam_user_get_signin_state`
|
||||
/// returns 1 for `user_index == 0`, conflicting with the "no profile"
|
||||
/// model used here. That divergence surfaces later in the Phase A trace
|
||||
/// (idx 107996+) and is a separate fix — deferred per single-fix
|
||||
/// discipline.
|
||||
fn xam_content_create_enumerator(
|
||||
ctx: &mut PpcContext,
|
||||
mem: &GuestMemory,
|
||||
_state: &mut KernelState,
|
||||
) {
|
||||
const X_USER_INDEX_NONE: u32 = 0xFE;
|
||||
const X_USER_INDEX_LATEST: u32 = 0xFD;
|
||||
const X_USER_MAX_USER_COUNT: u32 = 4;
|
||||
const X_E_INVALIDARG: u32 = 0x8007_0057;
|
||||
const X_ERROR_NO_SUCH_USER: u32 = 0x0000_0525;
|
||||
const X_ERROR_SUCCESS: u32 = 0;
|
||||
const X_CONTENT_DATA_SIZE: u32 = 0x134;
|
||||
|
||||
let user_index = ctx.gpr[3] as u32;
|
||||
let device_id = ctx.gpr[4] as u32;
|
||||
let _content_type = ctx.gpr[5] as u32;
|
||||
let _content_flags = ctx.gpr[6] as u32;
|
||||
let items_per_enumerate = ctx.gpr[7] as u32;
|
||||
let buffer_size_ptr = ctx.gpr[8] as u32;
|
||||
let handle_out = ctx.gpr[9] as u32;
|
||||
|
||||
// Canary xam_content.cc:135-143 — `device_id != 0 && device_info ==
|
||||
// nullptr` OR `!handle_out` → X_E_INVALIDARG, with
|
||||
// `*buffer_size_ptr = 0` if non-null. Ours's `GetDummyDeviceInfo`
|
||||
// accepts HDD (1) and ODD (2) per dummy_device_info.cc. For
|
||||
// simplicity (and because Sylpheed exercises `device_id == 0` on
|
||||
// first call per canary trace), accept device_id ∈ {0, 1, 2}; reject
|
||||
// larger.
|
||||
let device_unknown = device_id != 0 && device_id > 2;
|
||||
if device_unknown || handle_out == 0 {
|
||||
if buffer_size_ptr != 0 {
|
||||
mem.write_u32(buffer_size_ptr, 0);
|
||||
}
|
||||
ctx.gpr[3] = X_E_INVALIDARG as u64;
|
||||
return;
|
||||
}
|
||||
|
||||
// Canary line 145-147 — written *before* the user-profile check.
|
||||
if buffer_size_ptr != 0 {
|
||||
mem.write_u32(buffer_size_ptr, X_CONTENT_DATA_SIZE.wrapping_mul(items_per_enumerate));
|
||||
}
|
||||
|
||||
// Canary line 150-158 — `if (user_index != XUserIndexNone) { user =
|
||||
// GetUserProfile(user_index); if (!user) return X_ERROR_NO_SUCH_USER;
|
||||
// xuid = user->xuid(); }`. Ours has no profile manager, so any
|
||||
// `user_index != 0xFE` misses. Also reject indices ≥ 4 (canary's
|
||||
// GetUserProfile out-of-range path returns nullptr, falling into
|
||||
// the same branch). `XUserIndexLatest` (0xFD) is special-cased in
|
||||
// canary's GetUserProfile but still produces nullptr without a
|
||||
// profile installed.
|
||||
if user_index != X_USER_INDEX_NONE {
|
||||
let out_of_range = user_index >= X_USER_MAX_USER_COUNT
|
||||
&& user_index != X_USER_INDEX_LATEST;
|
||||
let _ = out_of_range; // documentation only — both branches → no user
|
||||
ctx.gpr[3] = X_ERROR_NO_SUCH_USER as u64;
|
||||
return;
|
||||
}
|
||||
|
||||
// user_index == XUserIndexNone: canary skips profile lookup and
|
||||
// proceeds to enumerator creation. With no installed content the
|
||||
// enumerator init succeeds and `*handle_out` receives a fresh
|
||||
// handle. We don't have an XEnumerator object model yet; return
|
||||
// success with handle_out=0 as a stub. Defensive: never exercised
|
||||
// in the current Phase A oracle (canary fires user_index!=0xFE).
|
||||
if handle_out != 0 {
|
||||
mem.write_u32(handle_out, 0);
|
||||
}
|
||||
ctx.gpr[3] = X_ERROR_SUCCESS as u64;
|
||||
}
|
||||
|
||||
// ===== System =====
|
||||
|
||||
fn xam_get_execution_id(ctx: &mut PpcContext, mem: &GuestMemory, state: &mut KernelState) {
|
||||
@@ -424,7 +599,8 @@ fn xam_notify_create_listener(ctx: &mut PpcContext, mem: &GuestMemory, state: &m
|
||||
}
|
||||
|
||||
fn xnotify_get_next(ctx: &mut PpcContext, mem: &GuestMemory, state: &mut KernelState) {
|
||||
let handle = ctx.gpr[3] as u32;
|
||||
// Phase C+19: canonicalize dup ids → source.
|
||||
let handle = state.resolve_handle(ctx.gpr[3] as u32);
|
||||
let match_id = ctx.gpr[4] as u32;
|
||||
let id_ptr = ctx.gpr[5] as u32;
|
||||
let param_ptr = ctx.gpr[6] as u32;
|
||||
@@ -578,6 +754,206 @@ mod tests {
|
||||
assert_eq!(ctx.gpr[3], 8);
|
||||
}
|
||||
|
||||
/// XamTaskCloseHandle on a valid Thread handle must release the
|
||||
/// object (ref-counted) and return 1, matching canary's
|
||||
/// `XamTaskCloseHandle_entry` (xam_task.cc:83-93) which delegates
|
||||
/// to `NtClose` and returns `true` on `XSUCCESS`.
|
||||
#[test]
|
||||
fn xam_task_close_handle_valid_handle_returns_one_and_releases() {
|
||||
let (mut ctx, mem, mut state) = fresh();
|
||||
let handle = state.alloc_handle_for(KernelObject::Event {
|
||||
manual_reset: true,
|
||||
signaled: false,
|
||||
waiters: Vec::new(),
|
||||
});
|
||||
// alloc_handle_for is expected to install a refcount of 1.
|
||||
assert!(
|
||||
state.objects.contains_key(&handle),
|
||||
"fresh handle should be in object table"
|
||||
);
|
||||
|
||||
ctx.gpr[3] = handle as u64;
|
||||
xam_task_close_handle(&mut ctx, &mem, &mut state);
|
||||
|
||||
assert_eq!(
|
||||
ctx.gpr[3], 1,
|
||||
"valid handle close must return 1 (canary parity, xam_task.cc:92)"
|
||||
);
|
||||
assert!(
|
||||
!state.objects.contains_key(&handle),
|
||||
"object must be dropped when refcount hits zero"
|
||||
);
|
||||
assert!(
|
||||
!state.handle_refcount.contains_key(&handle),
|
||||
"refcount entry must be scrubbed"
|
||||
);
|
||||
}
|
||||
|
||||
/// XamTaskCloseHandle on an unknown handle must return 0 (false),
|
||||
/// matching canary's `XFAILED(NtClose)` branch returning `false`
|
||||
/// after `XThread::SetLastError(rtl_dos_error)`.
|
||||
#[test]
|
||||
fn xam_task_close_handle_invalid_handle_returns_zero() {
|
||||
let (mut ctx, mem, mut state) = fresh();
|
||||
ctx.gpr[3] = 0xDEAD_BEEFu64;
|
||||
xam_task_close_handle(&mut ctx, &mem, &mut state);
|
||||
assert_eq!(
|
||||
ctx.gpr[3], 0,
|
||||
"invalid handle close must return 0 (canary parity, xam_task.cc:89)"
|
||||
);
|
||||
}
|
||||
|
||||
/// XamTaskCloseHandle with a duplicated (refcounted) handle must
|
||||
/// keep the object alive after one close and drop it after two.
|
||||
/// Mirrors canary's `ObjectTable::ReleaseHandle`
|
||||
/// (object_table.cc:200-208).
|
||||
#[test]
|
||||
fn xam_task_close_handle_respects_refcount() {
|
||||
let (mut ctx, mem, mut state) = fresh();
|
||||
let handle = state.alloc_handle_for(KernelObject::Event {
|
||||
manual_reset: false,
|
||||
signaled: false,
|
||||
waiters: Vec::new(),
|
||||
});
|
||||
// Bump refcount to simulate NtDuplicateObject aliasing.
|
||||
*state.handle_refcount.entry(handle).or_insert(1) += 1;
|
||||
|
||||
ctx.gpr[3] = handle as u64;
|
||||
xam_task_close_handle(&mut ctx, &mem, &mut state);
|
||||
assert_eq!(ctx.gpr[3], 1, "first close returns 1");
|
||||
assert!(
|
||||
state.objects.contains_key(&handle),
|
||||
"object must survive first close (refcount > 0)"
|
||||
);
|
||||
|
||||
ctx.gpr[3] = handle as u64;
|
||||
xam_task_close_handle(&mut ctx, &mem, &mut state);
|
||||
assert_eq!(ctx.gpr[3], 1, "second close also returns 1");
|
||||
assert!(
|
||||
!state.objects.contains_key(&handle),
|
||||
"object must be dropped after second close (refcount == 0)"
|
||||
);
|
||||
}
|
||||
|
||||
/// End-to-end parity: spawn an XAM task with `xam_task_schedule`,
|
||||
/// then close the resulting handle via `xam_task_close_handle`.
|
||||
/// This is the exact dataflow Sylpheed exercises at Phase A
|
||||
/// `tid_event_idx=102156..102158` on the main chain.
|
||||
///
|
||||
/// Phase C+16: After C+16, `xam_task_schedule` installs a thread
|
||||
/// self-reference (refcount=2 post-spawn), so the user's NtClose
|
||||
/// (via XamTaskCloseHandle) only drops to refcount=1; the handle
|
||||
/// survives until the spawned thread exits. This mirrors canary's
|
||||
/// `XThread::Create` → `RetainHandle()` → `XThread::Exit` →
|
||||
/// `ReleaseHandle()` lifecycle (xthread.cc:414/524).
|
||||
#[test]
|
||||
fn xam_task_schedule_then_close_round_trip_returns_one() {
|
||||
let (mut ctx, mut mem, mut state) = fresh();
|
||||
let callback_pc: u32 = 0x824a_93c8;
|
||||
let message_ptr: u32 = SCRATCH_BASE + 0x100;
|
||||
let handle_out: u32 = SCRATCH_BASE + 0x200;
|
||||
ctx.gpr[3] = callback_pc as u64;
|
||||
ctx.gpr[4] = message_ptr as u64;
|
||||
ctx.gpr[5] = 0;
|
||||
ctx.gpr[6] = handle_out as u64;
|
||||
ctx.lr = 0x824a_9a14;
|
||||
xam_task_schedule(&mut ctx, &mut mem, &mut state);
|
||||
assert_eq!(ctx.gpr[3], 0, "schedule succeeded");
|
||||
|
||||
let handle = mem.read_u32(handle_out);
|
||||
// Phase C+16: post-spawn refcount must be 2 (creator + self-ref).
|
||||
assert_eq!(
|
||||
state.handle_refcount.get(&handle).copied(),
|
||||
Some(2),
|
||||
"post-spawn refcount must include the thread self-reference"
|
||||
);
|
||||
|
||||
ctx.gpr[3] = handle as u64;
|
||||
xam_task_close_handle(&mut ctx, &mem, &mut state);
|
||||
assert_eq!(
|
||||
ctx.gpr[3], 1,
|
||||
"schedule→close round-trip must return 1 (Phase A idx=102158 parity)"
|
||||
);
|
||||
// Phase C+16: after close, the self-ref still holds the object.
|
||||
assert!(
|
||||
state.objects.contains_key(&handle),
|
||||
"object must survive XamTaskCloseHandle because the spawned thread holds a self-ref"
|
||||
);
|
||||
assert_eq!(
|
||||
state.handle_refcount.get(&handle).copied(),
|
||||
Some(1),
|
||||
"post-close refcount = self-ref only (canary XThread::Create::RetainHandle parity)"
|
||||
);
|
||||
}
|
||||
|
||||
/// Phase C+16: refcount lifecycle balance test.
|
||||
/// Schedule task → close handle (refcount 2→1) → simulate thread
|
||||
/// exit by calling `release_handle` (refcount 1→0). After both:
|
||||
/// object destroyed, refcount entry scrubbed. Mirrors canary's
|
||||
/// `XamTaskCloseHandle`→`NtClose`+`XThread::Exit::ReleaseHandle`.
|
||||
#[test]
|
||||
fn xam_task_schedule_close_then_thread_exit_destroys_handle() {
|
||||
let (mut ctx, mut mem, mut state) = fresh();
|
||||
let callback_pc: u32 = 0x824a_93c8;
|
||||
let message_ptr: u32 = SCRATCH_BASE + 0x100;
|
||||
let handle_out: u32 = SCRATCH_BASE + 0x200;
|
||||
ctx.gpr[3] = callback_pc as u64;
|
||||
ctx.gpr[4] = message_ptr as u64;
|
||||
ctx.gpr[5] = 0;
|
||||
ctx.gpr[6] = handle_out as u64;
|
||||
ctx.lr = 0x824a_9a14;
|
||||
xam_task_schedule(&mut ctx, &mut mem, &mut state);
|
||||
let handle = mem.read_u32(handle_out);
|
||||
|
||||
// User closes the handle (refcount 2→1, object survives).
|
||||
ctx.gpr[3] = handle as u64;
|
||||
xam_task_close_handle(&mut ctx, &mem, &mut state);
|
||||
assert!(state.objects.contains_key(&handle));
|
||||
|
||||
// Simulate thread exit releasing the self-ref (refcount 1→0).
|
||||
let destroyed = state.release_handle(handle);
|
||||
assert!(destroyed, "release_handle must return true on final ref drop");
|
||||
assert!(
|
||||
!state.objects.contains_key(&handle),
|
||||
"object must be destroyed once both user-ref and self-ref are released"
|
||||
);
|
||||
assert!(
|
||||
!state.handle_refcount.contains_key(&handle),
|
||||
"refcount entry must be scrubbed"
|
||||
);
|
||||
}
|
||||
|
||||
/// Phase C+16: thread-exit-before-close ordering. Tests the reverse
|
||||
/// of the prior case — thread exits first (self-ref released), user
|
||||
/// then closes (creator-ref released → destroy). Both orderings
|
||||
/// must converge on a clean destroy with no double-free.
|
||||
#[test]
|
||||
fn xam_task_thread_exit_then_close_destroys_handle() {
|
||||
let (mut ctx, mut mem, mut state) = fresh();
|
||||
let callback_pc: u32 = 0x824a_93c8;
|
||||
let message_ptr: u32 = SCRATCH_BASE + 0x100;
|
||||
let handle_out: u32 = SCRATCH_BASE + 0x200;
|
||||
ctx.gpr[3] = callback_pc as u64;
|
||||
ctx.gpr[4] = message_ptr as u64;
|
||||
ctx.gpr[5] = 0;
|
||||
ctx.gpr[6] = handle_out as u64;
|
||||
ctx.lr = 0x824a_9a14;
|
||||
xam_task_schedule(&mut ctx, &mut mem, &mut state);
|
||||
let handle = mem.read_u32(handle_out);
|
||||
|
||||
// Thread exits first (releases self-ref, refcount 2→1).
|
||||
let destroyed_first = state.release_handle(handle);
|
||||
assert!(!destroyed_first, "self-ref drop must not destroy (creator still holds)");
|
||||
assert!(state.objects.contains_key(&handle));
|
||||
|
||||
// User closes (refcount 1→0 → destroy).
|
||||
ctx.gpr[3] = handle as u64;
|
||||
xam_task_close_handle(&mut ctx, &mem, &mut state);
|
||||
assert_eq!(ctx.gpr[3], 1, "close returns 1");
|
||||
assert!(!state.objects.contains_key(&handle));
|
||||
assert!(!state.handle_refcount.contains_key(&handle));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn xam_user_get_signin_state_user0_signed_in_locally() {
|
||||
let (mut ctx, mem, mut state) = fresh();
|
||||
@@ -688,4 +1064,113 @@ mod tests {
|
||||
assert_eq!(mem.read_u32(id_ptr), 0);
|
||||
assert_eq!(mem.read_u32(param_ptr), 0);
|
||||
}
|
||||
|
||||
/// Phase A oracle case at `tid_event_idx=102197`: canary returns
|
||||
/// `X_ERROR_NO_SUCH_USER` (0x525) because no profile is installed.
|
||||
/// Sylpheed must be querying with a `user_index < 4`.
|
||||
#[test]
|
||||
fn xam_content_create_enumerator_returns_no_such_user_for_user0() {
|
||||
let (mut ctx, mem, mut state) = fresh();
|
||||
let buffer_size_ptr = SCRATCH_BASE + 0x100;
|
||||
let handle_out = SCRATCH_BASE + 0x200;
|
||||
ctx.gpr[3] = 0; // user_index = 0 (signed-in slot, no profile in ours)
|
||||
ctx.gpr[4] = 1; // device_id = HDD
|
||||
ctx.gpr[5] = 0x0000_0001; // content_type
|
||||
ctx.gpr[6] = 0; // content_flags
|
||||
ctx.gpr[7] = 4; // items_per_enumerate
|
||||
ctx.gpr[8] = buffer_size_ptr as u64;
|
||||
ctx.gpr[9] = handle_out as u64;
|
||||
xam_content_create_enumerator(&mut ctx, &mem, &mut state);
|
||||
assert_eq!(
|
||||
ctx.gpr[3], 0x0000_0525,
|
||||
"canary mirror: X_ERROR_NO_SUCH_USER for any user_index < 4"
|
||||
);
|
||||
// Canary writes buffer_size_ptr BEFORE the user-profile check;
|
||||
// the X_ERROR_NO_SUCH_USER path keeps the computed size value.
|
||||
assert_eq!(
|
||||
mem.read_u32(buffer_size_ptr),
|
||||
0x134 * 4,
|
||||
"buffer_size_ptr must equal sizeof(XCONTENT_DATA) * items_per_enumerate"
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn xam_content_create_enumerator_invalid_handle_out_returns_invalidarg() {
|
||||
let (mut ctx, mem, mut state) = fresh();
|
||||
let buffer_size_ptr = SCRATCH_BASE + 0x100;
|
||||
// Seed scratch with a sentinel so we can detect the buffer_size
|
||||
// = 0 reset.
|
||||
mem.write_u32(buffer_size_ptr, 0xDEAD_BEEF);
|
||||
ctx.gpr[3] = 0;
|
||||
ctx.gpr[4] = 1;
|
||||
ctx.gpr[5] = 0x0000_0001;
|
||||
ctx.gpr[6] = 0;
|
||||
ctx.gpr[7] = 4;
|
||||
ctx.gpr[8] = buffer_size_ptr as u64;
|
||||
ctx.gpr[9] = 0; // handle_out = NULL → X_E_INVALIDARG
|
||||
xam_content_create_enumerator(&mut ctx, &mem, &mut state);
|
||||
assert_eq!(ctx.gpr[3], 0x8007_0057);
|
||||
assert_eq!(
|
||||
mem.read_u32(buffer_size_ptr),
|
||||
0,
|
||||
"X_E_INVALIDARG path resets *buffer_size_ptr to 0"
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn xam_content_create_enumerator_unknown_device_returns_invalidarg() {
|
||||
let (mut ctx, mem, mut state) = fresh();
|
||||
let buffer_size_ptr = SCRATCH_BASE + 0x100;
|
||||
let handle_out = SCRATCH_BASE + 0x200;
|
||||
mem.write_u32(buffer_size_ptr, 0xDEAD_BEEF);
|
||||
ctx.gpr[3] = 0;
|
||||
ctx.gpr[4] = 99; // device_id = unknown
|
||||
ctx.gpr[5] = 0x0000_0001;
|
||||
ctx.gpr[6] = 0;
|
||||
ctx.gpr[7] = 4;
|
||||
ctx.gpr[8] = buffer_size_ptr as u64;
|
||||
ctx.gpr[9] = handle_out as u64;
|
||||
xam_content_create_enumerator(&mut ctx, &mem, &mut state);
|
||||
assert_eq!(ctx.gpr[3], 0x8007_0057);
|
||||
assert_eq!(mem.read_u32(buffer_size_ptr), 0);
|
||||
}
|
||||
|
||||
/// `user_index == XUserIndexNone (0xFE)` skips the profile check;
|
||||
/// canary proceeds to enumerator creation and returns SUCCESS.
|
||||
/// Defensive coverage — not currently exercised by Phase A.
|
||||
#[test]
|
||||
fn xam_content_create_enumerator_user_none_returns_success() {
|
||||
let (mut ctx, mem, mut state) = fresh();
|
||||
let buffer_size_ptr = SCRATCH_BASE + 0x100;
|
||||
let handle_out = SCRATCH_BASE + 0x200;
|
||||
ctx.gpr[3] = 0xFE; // XUserIndexNone
|
||||
ctx.gpr[4] = 1;
|
||||
ctx.gpr[5] = 0x0000_0001;
|
||||
ctx.gpr[6] = 0;
|
||||
ctx.gpr[7] = 2;
|
||||
ctx.gpr[8] = buffer_size_ptr as u64;
|
||||
ctx.gpr[9] = handle_out as u64;
|
||||
xam_content_create_enumerator(&mut ctx, &mem, &mut state);
|
||||
assert_eq!(ctx.gpr[3], 0);
|
||||
assert_eq!(mem.read_u32(buffer_size_ptr), 0x134 * 2);
|
||||
}
|
||||
|
||||
/// Out-of-range user_index (>=4 and !=0xFD) takes the same
|
||||
/// no-such-user path because canary's `GetUserProfile` returns
|
||||
/// nullptr for those indices.
|
||||
#[test]
|
||||
fn xam_content_create_enumerator_out_of_range_user_returns_no_such_user() {
|
||||
let (mut ctx, mem, mut state) = fresh();
|
||||
let buffer_size_ptr = SCRATCH_BASE + 0x100;
|
||||
let handle_out = SCRATCH_BASE + 0x200;
|
||||
ctx.gpr[3] = 7; // out of range, < XUserIndexLatest
|
||||
ctx.gpr[4] = 0;
|
||||
ctx.gpr[5] = 0x0000_0001;
|
||||
ctx.gpr[6] = 0;
|
||||
ctx.gpr[7] = 1;
|
||||
ctx.gpr[8] = buffer_size_ptr as u64;
|
||||
ctx.gpr[9] = handle_out as u64;
|
||||
xam_content_create_enumerator(&mut ctx, &mem, &mut state);
|
||||
assert_eq!(ctx.gpr[3], 0x0000_0525);
|
||||
}
|
||||
}
|
||||
|
||||
@@ -58,6 +58,24 @@ pub const XAUDIO_PERIOD: Duration = Duration::from_nanos(5_333_333);
|
||||
/// queueing unbounded callbacks while injection is starved.
|
||||
pub const XAUDIO_QUEUE_CAP: usize = 16;
|
||||
|
||||
/// Phase HostAudioEager (2026-05-19): initial seeded fire count at
|
||||
/// `XAudioRegisterRenderDriverClient` time. Mirrors xenia-canary
|
||||
/// [`audio_system.cc:210`](../../../../xenia-canary/src/xenia/apu/audio_system.cc#L210)
|
||||
/// `client_semaphore->Release(queued_frames_=8, nullptr)` — the moment
|
||||
/// canary's `RegisterClient` returns, its already-running host worker
|
||||
/// thread has 8 buffer-complete fires queued to drain.
|
||||
///
|
||||
/// In ours, the dedicated guest audio worker (spawned at the same
|
||||
/// register call) can't be HOST-threaded; instead we seed the pending
|
||||
/// FIFO so the round prologue's `try_inject_audio_callback` injects
|
||||
/// the first callback on the very next round — well before tid=1
|
||||
/// reaches `ExCreateThread` for the XAudio worker threads (tid=14/15
|
||||
/// in canary, tid=9/10 in ours). This fixes the ordering issue where
|
||||
/// the 48k-instruction ticker delay let tid=9/10 spawn and enter
|
||||
/// their spin loop on the uninitialized voice struct before the
|
||||
/// callback could modify it.
|
||||
pub const XAUDIO_REGISTER_SEED_FIRES: usize = 8;
|
||||
|
||||
#[derive(Debug, Clone, Copy)]
|
||||
pub struct XAudioClient {
|
||||
pub callback_pc: u32,
|
||||
@@ -155,6 +173,28 @@ impl XAudioState {
|
||||
}
|
||||
}
|
||||
|
||||
/// Phase HostAudioEager: enqueue `n` buffer-complete fires for a
|
||||
/// specific client slot. Used by `XAudioRegisterRenderDriverClient`
|
||||
/// to mirror canary's `client_semaphore->Release(queued_frames_)`
|
||||
/// at register time. Capped by [`XAUDIO_QUEUE_CAP`] to avoid
|
||||
/// unbounded growth if the caller seeds aggressively. Returns the
|
||||
/// actual number of fires enqueued.
|
||||
pub fn seed_fires_for(&mut self, index: usize, n: usize) -> usize {
|
||||
if index >= XAUDIO_MAX_CLIENTS || self.clients[index].is_none() {
|
||||
return 0;
|
||||
}
|
||||
let mut queued = 0;
|
||||
for _ in 0..n {
|
||||
if self.pending.len() >= XAUDIO_QUEUE_CAP {
|
||||
self.dropped += 1;
|
||||
break;
|
||||
}
|
||||
self.pending.push_back(index);
|
||||
queued += 1;
|
||||
}
|
||||
queued
|
||||
}
|
||||
|
||||
pub fn peek_next(&self) -> Option<usize> {
|
||||
self.pending.front().copied()
|
||||
}
|
||||
@@ -320,6 +360,51 @@ mod tests {
|
||||
assert!(s.last_instant.is_some());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn seed_fires_for_registered_slot_enqueues_n() {
|
||||
let mut s = XAudioState::default();
|
||||
let i = s.register(dummy_client(1)).unwrap();
|
||||
let queued = s.seed_fires_for(i, XAUDIO_REGISTER_SEED_FIRES);
|
||||
assert_eq!(queued, XAUDIO_REGISTER_SEED_FIRES);
|
||||
assert_eq!(s.pending.len(), XAUDIO_REGISTER_SEED_FIRES);
|
||||
// All enqueued fires reference our slot.
|
||||
for _ in 0..XAUDIO_REGISTER_SEED_FIRES {
|
||||
assert_eq!(s.take_next(), Some(i));
|
||||
}
|
||||
assert!(s.pending.is_empty());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn seed_fires_for_unregistered_slot_is_noop() {
|
||||
let mut s = XAudioState::default();
|
||||
// Slot 3 is empty.
|
||||
let queued = s.seed_fires_for(3, 8);
|
||||
assert_eq!(queued, 0);
|
||||
assert!(s.pending.is_empty());
|
||||
assert_eq!(s.dropped, 0);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn seed_fires_for_caps_at_queue_cap_and_counts_drops() {
|
||||
let mut s = XAudioState::default();
|
||||
let i = s.register(dummy_client(1)).unwrap();
|
||||
let queued = s.seed_fires_for(i, XAUDIO_QUEUE_CAP * 4);
|
||||
assert_eq!(queued, XAUDIO_QUEUE_CAP);
|
||||
assert_eq!(s.pending.len(), XAUDIO_QUEUE_CAP);
|
||||
// Excess fires are counted as dropped (per
|
||||
// existing `enqueue_all_active` discipline).
|
||||
assert!(s.dropped >= 1);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn seed_fires_for_out_of_range_index_is_noop() {
|
||||
let mut s = XAudioState::default();
|
||||
s.register(dummy_client(1)).unwrap();
|
||||
let queued = s.seed_fires_for(XAUDIO_MAX_CLIENTS + 5, 4);
|
||||
assert_eq!(queued, 0);
|
||||
assert!(s.pending.is_empty());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn tick_wallclock_fires_after_period() {
|
||||
let mut s = XAudioState::default();
|
||||
|
||||
Reference in New Issue
Block a user