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3 Commits

Author SHA1 Message Date
MechaCat02
19659d7f76 feat(kernel): KRNBUG-XAM-001 — XGetAVPack returns 8 (HDMI), not 0x16 
Mirrors canary's cvars::avpack default (xam_info.cc:35) and Sylpheed's
accepted set {3,4,6,8} (xam_info.cc:250-251). With KRNBUG-XEX-001 having
flipped the priv-10 gate, XGetAVPack now reaches its caller in
sub_824AB578; returning 0x16 caused Sylpheed to abort the AV/crypto
block before XeCryptSha. Cascade walks one step (canary-only export
list 11 → 10); sub_824ABA98 is the next candidate.

Tests: 589 → 590. Goldens re-baselined (n50m: 50000005→50000004,
imports 407417→407416). Lockstep deterministic across 3 reruns at
-n 100M (instructions=100000010, import_calls=987686 +2.4×, swaps=2).
9-PC producer probe still 0×; parked handles 0x1004/0x100c/0x15e0
still signal_attempts=0.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
 2026-05-04 18:54:24 +02:00
MechaCat02
1a892d4641 feat(kernel): KRNBUG-XEX-001 — real XexCheckExecutablePrivilege from XEX header bitmap 
Replace stub_return_zero with a canary-faithful implementation that
returns bit `priv` of the loaded XEX's XEX_HEADER_SYSTEM_FLAGS
(key 0x00030000) bitmap. Mirrors xenia-canary
xboxkrnl_modules.cc:22-39: `(flags >> priv) & 1` for priv < 32, else 0.

Plumbing:
- xenia-xex: header_keys::SYSTEM_FLAGS const + get_system_flags() accessor.
- xenia-kernel/state.rs: pub xex_system_flags: u32 + xex_priv_logged
  HashSet for one-shot per-priv tracing.
- xenia-app: kernel.xex_system_flags wired in cmd_exec_inner.
- xenia-kernel/exports.rs: real export body + unit test covering
  bits 10/11/0/64 + zero-flags case.

Sylpheed's bitmap is 0x00000400 (only XEX_SYSTEM_PAL50_INCOMPATIBLE,
bit 10). At -n 500M with the fix:
- XGetAVPack: 0 -> 1 (priv-10 gate at lr=0x824ab598 flipped).
- 10 other canary-only exports + 9 producer PCs + 3 parked handles
  unchanged. Priv-11 site at sub_824A9710 is downstream and still
  not reached — AV/crypto block aborts after XGetAVPack returns
  our placeholder 0x16 (canary returns 8/HDMI; Sylpheed accepts
  only 3/4/6/8 per xenia-canary xam_info.cc:250-251).

Tests 588 -> 589. Lockstep deterministic (3 reruns identical):
n50m goes 50000008 -> 50000005 instr / 407415 -> 407417 imp / swaps=2 /
draws=0. Goldens re-baselined (sylpheed_n50m, sylpheed_n2m); oracle
test green.

Full chain-of-effects + next-frontier hand-off in audit-findings.md
under KRNBUG-XEX-001.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
 2026-05-04 18:32:51 +02:00
MechaCat02
bae9305982 xenia-app: observability subsystem, --parallel runtime, stress harness 
observability.rs installs the tracing subscriber stack (env-filter +
JSON file appender + chrome trace + error layer) and the metrics
recorder shared by the workspace. main.rs grows the new CLI surface:
--parallel, --reservations-table, --trace-handles, --analyze=
{rust,sql,both}, xenia dis --json, --ui, plus the wiring that runs
the CPU through the new scheduler, drives the GPU's threaded backend,
and surfaces the framebuffer + HUD via xenia-ui.

Add tests/parallel_stress.rs (#[ignore]-gated long form, short form
runs 20×@5M) and tests/golden/sylpheed_n2m.json — the digest the
lockstep/parallel combos compare against.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
 2026-05-01 16:30:26 +02:00