VM support for running Kernel binaries.

runtime/vm/dart_api_impl.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "include/dart_api.h"
 #include "include/dart_mirrors_api.h"
 #include "include/dart_native_api.h"
 
 #include "platform/assert.h"
 #include "lib/stacktrace.h"
 #include "vm/class_finalizer.h"
 #include "vm/clustered_snapshot.h"
 #include "vm/compiler.h"
 #include "vm/dart.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_api_message.h"
 #include "vm/dart_api_state.h"
 #include "vm/dart_entry.h"
 #include "vm/debugger.h"
+#if !defined(DART_PRECOMPILED_RUNTIME)
+#include "vm/kernel_reader.h"
+#endif
 #include "vm/exceptions.h"
 #include "vm/flags.h"
 #include "vm/growable_array.h"
 #include "vm/lockers.h"
 #include "vm/isolate_reload.h"
 #include "vm/message.h"
 #include "vm/message_handler.h"
 #include "vm/native_entry.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
@@ skipping 5355 matching lines @@
     tds2.FormatArgument(1, "heapSize", "%" Pd64,
                         I->heap()->UsedInWords(Heap::kOld) * kWordSize);
   });
   library ^= tmp.raw();
   library.set_debuggable(true);
   I->object_store()->set_root_library(library);
   return Api::NewHandle(T, library.raw());
 }
 
 
+DART_EXPORT Dart_Handle Dart_LoadKernel(const uint8_t* buffer,
+                                        intptr_t buffer_len) {
+  API_TIMELINE_DURATION;
+  DARTSCOPE(Thread::Current());
+  StackZone zone(T);
+
+#if defined(DART_PRECOMPILED_RUNTIME) && !defined(DART_PRECOMPILER)
+  return Api::NewError("%s: Can't load Kernel files from precompiled runtime.",
+                       CURRENT_FUNC);
+#else
+  Isolate* I = T->isolate();
+
+  Library& library = Library::Handle(Z, I->object_store()->root_library());
+  if (!library.IsNull()) {
+    const String& library_url = String::Handle(Z, library.url());
+    return Api::NewError("%s: A script has already been loaded from '%s'.",
+                         CURRENT_FUNC, library_url.ToCString());
+  }
+  CHECK_CALLBACK_STATE(T);
+  CHECK_COMPILATION_ALLOWED(I);
+
+  // TODO(27588): Memory leak!
+  kernel::KernelReader* reader = new kernel::KernelReader(buffer, buffer_len);
+  const Object& tmp = reader->ReadProgram();
+  if (tmp.IsError()) {
+    return Api::NewHandle(T, tmp.raw());
+  }
+  library ^= tmp.raw();
+  library.set_debuggable(false);
+  I->object_store()->set_root_library(library);
+  return Api::NewHandle(T, library.raw());
+#endif
+}
+
+
 DART_EXPORT Dart_Handle Dart_RootLibrary() {
   Thread* thread = Thread::Current();
   Isolate* isolate = thread->isolate();
   CHECK_ISOLATE(isolate);
   return Api::NewHandle(thread, isolate->object_store()->root_library());
 }
 
 
 DART_EXPORT Dart_Handle Dart_SetRootLibrary(Dart_Handle library) {
   DARTSCOPE(Thread::Current());
@@ skipping 1216 matching lines @@
 
 DART_EXPORT bool Dart_IsPrecompiledRuntime() {
 #if defined(DART_PRECOMPILED_RUNTIME)
   return true;
 #else
   return false;
 #endif
 }
 
 }  // namespace dart