nativebridge: Add isNativeBridgeFunctionPointer method

This method lets native bridge report if particular pointer is in the
region of code executable by native bridge implementation.

Bug: 393035780
Test: atest art/libnativebridge/tests
Change-Id: Icaec80cb7efae5b918aed0a98216cbfaeaba330d

1 files changed, 31 insertions, 0 deletions

diff --git a/libnativebridge/tests/NativeBridge8IdentifyTrampolines_lib.cpp b/libnativebridge/tests/NativeBridge8IdentifyTrampolines_lib.cpp
new file mode 100644
index 0000000000..0c4ccf03b5
--- /dev/null
+++ b/libnativebridge/tests/NativeBridge8IdentifyTrampolines_lib.cpp
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2025 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "NativeBridge8IdentifyTrampolines_lib.h"
+
+namespace android {
+
+static const void* g_is_native_bridge_function_pointer_called_for = nullptr;
+
+void SetIsNativeBridgeFunctionPointerCalledFor(const void* ptr) {
+  g_is_native_bridge_function_pointer_called_for = ptr;
+}
+
+bool IsNativeBridgeFunctionPointerCalledFor(const void* ptr) {
+  return g_is_native_bridge_function_pointer_called_for == ptr;
+}
+
+}  // namespace android