ef93a4fa14
Source changes (dormant parity infra, retained from iterate 2.AI/2.AO): - xenia-kernel/exports.rs: nt_create_event manual_reset polarity + related event wiring - xenia-gpu/mmio_region.rs: D1MODE_VBLANK_VLINE_STATUS hardcode parity Also lands the audit-runs/ analysis notes (.md/.txt/.json digests) for the iterate 2.x VSync/0x10e8/0x1004 wedge investigation. Raw trace dumps (.jsonl/.gz/.csv/.stdout) and agent worktrees (.claude/) are gitignored as regenerable local artifacts — see memory + HANDOFF for the running findings. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
31 lines
1.3 KiB
Diff
31 lines
1.3 KiB
Diff
--- a/xenia-rs/crates/xenia-kernel/src/exports.rs
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+++ b/xenia-rs/crates/xenia-kernel/src/exports.rs
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@@ stub_return_zero …
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fn stub_return_zero(ctx: &mut PpcContext, _mem: &GuestMemory, _state: &mut KernelState) {
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ctx.gpr[3] = 0;
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}
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+/// Phase W: a literal `return 1`. Matches canary's
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+/// `VdInitializeEngines_entry` in `xboxkrnl_video.cc:271-279` which
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+/// returns `1` (truthy success token) rather than STATUS_SUCCESS=0.
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+/// Sylpheed-side guest code branches on this non-zero, so returning
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+/// 0 made the game skip the VdInitializeRingBuffer-and-after init
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+/// sequence and never set up the post-init render-target state.
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+fn stub_return_one(ctx: &mut PpcContext, _mem: &GuestMemory, _state: &mut KernelState) {
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+ ctx.gpr[3] = 1;
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+}
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+
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@@ exports table …
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- state.register_export(Xboxkrnl, 0x01C2, "VdInitializeEngines", stub_success);
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+ state.register_export(Xboxkrnl, 0x01C2, "VdInitializeEngines", stub_return_one);
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@@ tests mod …
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+ /// Phase W: ensure `VdInitializeEngines` writes `r3=1` …
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+ #[test]
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+ fn vd_initialize_engines_returns_one() {
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+ let (mut ctx, mem, mut state) = fresh();
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+ ctx.gpr[3] = 0xDEAD_BEEF; // sentinel — must be overwritten
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+ stub_return_one(&mut ctx, &mem, &mut state);
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+ assert_eq!(ctx.gpr[3], 1, "stub_return_one must put 1 in r3");
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+ }
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