From 545194860d9ae2d01f5b8d4ac1e675b5fa560532 Mon Sep 17 00:00:00 2001
From: Matthew Stanley <1379tech@gmail.com>
Date: Fri, 2 Oct 2026 15:41:01 -0700
Subject: [PATCH 1/2] bios: restamp the emitter fingerprints

2163035e and 85c88d26 changed config_loader.cpp (a fingerprint input) without restamping; a full regen is byte-identical, so only the stamps move.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
---
 generated/OpenBIOS.emitter.sha | 2 +-
 generated/SCPH1001.emitter.sha | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/generated/OpenBIOS.emitter.sha b/generated/OpenBIOS.emitter.sha
index 150fa94d..f2c743ad 100644
--- a/generated/OpenBIOS.emitter.sha
+++ b/generated/OpenBIOS.emitter.sha
@@ -1 +1 @@
-012434af40660484f2a6990dd9f6b2acb35d00bc514c3e85ba0a49ca211f3d33
+6f777c349081f0b31bbaed39224269698219bdc9ea85fbaf83f924698a4fb4e9
diff --git a/generated/SCPH1001.emitter.sha b/generated/SCPH1001.emitter.sha
index 07b17342..eab4c4f3 100644
--- a/generated/SCPH1001.emitter.sha
+++ b/generated/SCPH1001.emitter.sha
@@ -1 +1 @@
-aa351622ddd9c496b61bd0982e58230cb4fc3aac6e2a5a1e4899ccd51fc6dbe9
+852297730a86157bff30c08100f3decc395261935385288564d4eb0926952f67

From 6545e54a9ecc2a286a4878066fdaa9f95dce2cfe Mon Sep 17 00:00:00 2001
From: Matthew Stanley <1379tech@gmail.com>
Date: Fri, 2 Oct 2026 15:41:39 -0700
Subject: [PATCH 2/2] tests: fail when a committed BIOS emitter stamp is stale

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
---
 recompiler/CMakeLists.txt                    |  4 ++
 recompiler/tests/test_bios_emitter_stamps.py | 43 ++++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 recompiler/tests/test_bios_emitter_stamps.py

diff --git a/recompiler/CMakeLists.txt b/recompiler/CMakeLists.txt
index 282cba2f..56522f82 100644
--- a/recompiler/CMakeLists.txt
+++ b/recompiler/CMakeLists.txt
@@ -721,6 +721,10 @@ if(BUILD_TESTING)
             COMMAND ${Python3_EXECUTABLE}
                 ${CMAKE_CURRENT_SOURCE_DIR}/tests/test_optional_netplay_auth.py
                 --cxx ${CMAKE_CXX_COMPILER})
+        add_test(NAME bios_emitter_stamps
+            COMMAND ${Python3_EXECUTABLE}
+                ${CMAKE_CURRENT_SOURCE_DIR}/tests/test_bios_emitter_stamps.py
+                --cmake ${CMAKE_COMMAND})
         add_test(NAME pgo_rebuild_flow
             COMMAND ${Python3_EXECUTABLE}
                 ${CMAKE_CURRENT_SOURCE_DIR}/tests/test_pgo_rebuild_flow.py)
diff --git a/recompiler/tests/test_bios_emitter_stamps.py b/recompiler/tests/test_bios_emitter_stamps.py
new file mode 100644
index 00000000..fb0bbc53
--- /dev/null
+++ b/recompiler/tests/test_bios_emitter_stamps.py
@@ -0,0 +1,43 @@
+"""Every committed generated/<stem>.emitter.sha matches the current emitter.
+
+runtime.cmake compares these stamps only at title configure time, and only
+fatally in release CI, so a change to a fingerprint input (emitter sources,
+cycle headers, a profile or its seeds) that forgets to restamp sails through
+the test suite. This test makes that drift fail here instead.
+"""
+import argparse
+from pathlib import Path
+import subprocess
+
+
+def main():
+    ap = argparse.ArgumentParser()
+    ap.add_argument("--cmake", required=True)
+    ap.add_argument("--root", type=Path,
+                    default=Path(__file__).resolve().parents[2])
+    args = ap.parse_args()
+    root = args.root
+    stamps = sorted((root / "generated").glob("*.emitter.sha"))
+    assert stamps, "no generated/*.emitter.sha stamps found"
+    stale = []
+    for stamp in stamps:
+        stem = stamp.name[:-len(".emitter.sha")]
+        profile = root / "bios" / (stem + ".toml")
+        assert profile.exists(), f"{stamp.name} has no bios/{stem}.toml profile"
+        p = subprocess.run(
+            [args.cmake, f"-DROOT={root}", f"-DPROFILE=bios/{stem}.toml",
+             "-P", str(root / "tools" / "bios_emitter_fingerprint.cmake")],
+            cwd=root, capture_output=True, text=True, timeout=120)
+        assert p.returncode == 0, p.stderr
+        now = p.stdout.strip().splitlines()[-1].strip()
+        saved = stamp.read_text(encoding="utf-8").strip()
+        if now != saved:
+            stale.append(f"{stem}: stamp {saved} now {now}")
+    assert not stale, ("stale BIOS emitter stamps (run tools/regen_bios.sh "
+                       "--config bios/<stem>.toml and commit generated/):\n  "
+                       + "\n  ".join(stale))
+    print(f"PASS: {len(stamps)} BIOS emitter stamps match the emitter")
+
+
+if __name__ == "__main__":
+    main()