1 files changed, 93 insertions, 0 deletions
diff --git a/js/src/gdb/gdb-tests.cpp b/js/src/gdb/gdb-tests.cpp
new file mode 100644
index 0000000000..641161582f
--- /dev/null
+++ b/js/src/gdb/gdb-tests.cpp
@@ -0,0 +1,93 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "gdb-tests.h"
+#include "jsapi.h"
+#include "jsfriendapi.h"
+#include "js/Initialization.h"
+#include "js/Warnings.h"  // JS::SetWarningReporter
+
+using namespace JS;
+
+/* The class of the global object. */
+static const JSClass global_class = {"global", JSCLASS_GLOBAL_FLAGS,
+                                     &DefaultGlobalClassOps};
+
+static volatile int dontOptimizeMeAway = 0;
+
+void usePointer(const void* ptr) { dontOptimizeMeAway++; }
+
+template <typename T>
+static inline T* checkPtr(T* ptr) {
+  if (!ptr) {
+    abort();
+  }
+  return ptr;
+}
+
+static void checkBool(bool success) {
+  if (!success) {
+    abort();
+  }
+}
+
+/* The warning reporter callback. */
+void reportWarning(JSContext* cx, JSErrorReport* report) {
+  fprintf(stderr, "%s:%u: %s\n",
+          report->filename ? report->filename : "<no filename>",
+          (unsigned int)report->lineno, report->message().c_str());
+}
+
+// prologue.py sets a breakpoint on this function; test functions can call it
+// to easily return control to GDB where desired.
+void breakpoint() {
+  // If we leave this function empty, the linker will unify it with other
+  // empty functions throughout SpiderMonkey. If we then set a GDB
+  // breakpoint on it, that breakpoint will hit at all sorts of random
+  // times. So make it perform a distinctive side effect.
+  fprintf(stderr, "Called " __FILE__ ":breakpoint\n");
+}
+
+GDBFragment* GDBFragment::allFragments = nullptr;
+
+int main(int argc, const char** argv) {
+  if (!JS_Init()) return 1;
+  JSContext* cx = checkPtr(JS_NewContext(1024 * 1024));
+
+  JS_SetGCParameter(cx, JSGC_MAX_BYTES, 0xffffffff);
+  JS_SetNativeStackQuota(cx, 5000000);
+
+  checkBool(JS::InitSelfHostedCode(cx));
+  JS::SetWarningReporter(cx, reportWarning);
+
+  /* Create the global object. */
+  JS::RealmOptions options;
+  RootedObject global(
+      cx, checkPtr(JS_NewGlobalObject(cx, &global_class, nullptr,
+                                      JS::FireOnNewGlobalHook, options)));
+  JSAutoRealm ar(cx, global);
+
+  argv++;
+  while (*argv) {
+    const char* name = *argv++;
+    GDBFragment* fragment;
+    for (fragment = GDBFragment::allFragments; fragment;
+         fragment = fragment->next) {
+      if (strcmp(fragment->name(), name) == 0) {
+        fragment->run(cx, argv);
+        break;
+      }
+    }
+    if (!fragment) {
+      fprintf(stderr, "Unrecognized fragment name: %s\n", name);
+      exit(1);
+    }
+  }
+
+  return 0;
+}