xenia-rs

fabi/xenia-rs

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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	1f416aaa2e	test(check): ORACBUG-004 — sylpheed_n50m stable-digest oracle Adds a regression-catcher golden for Sylpheed boot at -n 50M lockstep, covering the first VdSwap pair (the n2m oracle is swap-blind because the first VdSwap fires at ~18M instructions). The new --stable-digest flag emits/compares only fields that are deterministic in lockstep: instructions, imports, unimpl, draws, swaps, unique_render_targets, shader_blobs_live, texture_cache_entries Excluded: packets — empirically ±2-8% lockstep variance (GPU thread race per audit M11) resolves, interrupts_delivered, interrupts_dropped, texture_decodes — scheduling-sensitive under --parallel path — cwd-dependent Empirical determinism: 3 consecutive lockstep -n 50M runs produce byte-identical stable-digest output. The n4b canonical-invocation golden the audit's recommended next sprint also called for is deferred. Per audit memory `--parallel --reservations-table` is pathologically slow (>32 min for -n 100M), so -n 4B in that mode would be many hours per run, not the 5-15 min the plan estimated. n4b will be captured one-shot post-renderer-unblock as a manual artifact under audit-runs/post-fix/, not as a test golden. See crates/xenia-app/tests/golden/README.md. Test infrastructure: - crates/xenia-app/tests/sylpheed_oracles.rs — invokes CARGO_BIN_EXE_xenia-rs against the ISO. Path resolved via SYLPHEED_ISO env var (skips gracefully if missing). - #[ignore]-gated; run via: cargo test --release -p xenia-app --test sylpheed_oracles \\ -- --ignored --nocapture Closes ORACBUG-004 (P0). Partial: ORACBUG-006 (P1 deferred). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-05-03 13:46:02 +02:00

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

1f416aaa2e

test(check): ORACBUG-004 — sylpheed_n50m stable-digest oracle

Adds a regression-catcher golden for Sylpheed boot at -n 50M lockstep,
covering the first VdSwap pair (the n2m oracle is swap-blind because
the first VdSwap fires at ~18M instructions). The new --stable-digest
flag emits/compares only fields that are deterministic in lockstep:

  instructions, imports, unimpl, draws, swaps,
  unique_render_targets, shader_blobs_live, texture_cache_entries

Excluded:

  packets — empirically ±2-8% lockstep variance (GPU thread race per
    audit M11)
  resolves, interrupts_delivered, interrupts_dropped, texture_decodes —
    scheduling-sensitive under --parallel
  path — cwd-dependent

Empirical determinism: 3 consecutive lockstep -n 50M runs produce
byte-identical stable-digest output.

The n4b canonical-invocation golden the audit's recommended next sprint
also called for is deferred. Per audit memory `--parallel
--reservations-table` is pathologically slow (>32 min for -n 100M), so
-n 4B in that mode would be many hours per run, not the 5-15 min the
plan estimated. n4b will be captured one-shot post-renderer-unblock as
a manual artifact under audit-runs/post-fix/, not as a test golden. See
crates/xenia-app/tests/golden/README.md.

Test infrastructure:
- crates/xenia-app/tests/sylpheed_oracles.rs — invokes
  CARGO_BIN_EXE_xenia-rs against the ISO. Path resolved via SYLPHEED_ISO
  env var (skips gracefully if missing).
- #[ignore]-gated; run via:
    cargo test --release -p xenia-app --test sylpheed_oracles \\
      -- --ignored --nocapture

Closes ORACBUG-004 (P0). Partial: ORACBUG-006 (P1 deferred).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-05-03 13:46:02 +02:00

3 Commits