Export tombstones by default for debuggable VMs

VM config's export_tombstones is now optional. Default is true for
debuggable VMs, false for non-debuggable VMs.

Bug: 250165198
Test: atest MicrodroidHostTestCases
Change-Id: I818bcf3446b5bf7f560487265d82cd08f97c277e
diff --git a/tests/testapk/Android.bp b/tests/testapk/Android.bp
index 5f9b915..d8f0e11 100644
--- a/tests/testapk/Android.bp
+++ b/tests/testapk/Android.bp
@@ -26,6 +26,7 @@
         "MicrodroidEmptyNativeLib",
         "MicrodroidExitNativeLib",
         "MicrodroidPrivateLinkingNativeLib",
+        "MicrodroidCrashNativeLib",
     ],
     jni_uses_platform_apis: true,
     use_embedded_native_libs: true,
@@ -92,3 +93,11 @@
     shared_libs: ["libselinux#latest"],
     stl: "libc++_static",
 }
+
+// A payload that crashes immediately on start
+cc_library_shared {
+    name: "MicrodroidCrashNativeLib",
+    srcs: ["src/native/crashbinary.cpp"],
+    header_libs: ["vm_payload_headers"],
+    stl: "libc++_static",
+}
diff --git a/tests/testapk/assets/vm_config_crash.json b/tests/testapk/assets/vm_config_crash.json
deleted file mode 100644
index 3ec34a3..0000000
--- a/tests/testapk/assets/vm_config_crash.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-    "os": {
-      "name": "microdroid"
-    },
-    "task": {
-      "type": "microdroid_launcher",
-      "command": "MicrodroidIdleNativeLib.so"
-    },
-    "export_tombstones": true
-  }
diff --git a/tests/testapk/assets/vm_config_crash_no_tombstone.json b/tests/testapk/assets/vm_config_crash_no_tombstone.json
deleted file mode 100644
index 9678e38..0000000
--- a/tests/testapk/assets/vm_config_crash_no_tombstone.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-    "os": {
-      "name": "microdroid"
-    },
-    "task": {
-      "type": "microdroid_launcher",
-      "command": "MicrodroidIdleNativeLib.so"
-    },
-    "export_tombstones": false
-  }
diff --git a/tests/testapk/assets/vm_config_no_tombstone.json b/tests/testapk/assets/vm_config_no_tombstone.json
new file mode 100644
index 0000000..97e764d
--- /dev/null
+++ b/tests/testapk/assets/vm_config_no_tombstone.json
@@ -0,0 +1,10 @@
+{
+  "os": {
+    "name": "microdroid"
+  },
+  "task": {
+    "type": "microdroid_launcher",
+    "command": "MicrodroidTestNativeLib.so"
+  },
+  "export_tombstones": false
+}
diff --git a/tests/testapk/src/native/crashbinary.cpp b/tests/testapk/src/native/crashbinary.cpp
new file mode 100644
index 0000000..27f10ec
--- /dev/null
+++ b/tests/testapk/src/native/crashbinary.cpp
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2023 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.
+ */
+
+// A binary killing itself by SIGABRT.
+#include <stdlib.h>
+#include <unistd.h>
+extern "C" int AVmPayload_main() {
+    abort();
+}