Auto create ApiLocalScope before calling native functions, this ensures that

runtime/vm/stub_code_x64.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 "vm/globals.h"
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/assembler.h"
 #include "vm/compiler.h"
 #include "vm/dart_entry.h"
@@ skipping 10 matching lines @@
 #define __ assembler->
 
 namespace dart {
 
 DEFINE_FLAG(bool, inline_alloc, true, "Inline allocation of objects.");
 DEFINE_FLAG(bool, use_slow_path, false,
     "Set to true for debugging & verifying the slow paths.");
 DECLARE_FLAG(int, optimization_counter_threshold);
 DECLARE_FLAG(bool, trace_optimized_ic_calls);
 
+
 // Input parameters:
 //   RSP : points to return address.
 //   RSP + 8 : address of last argument in argument array.
 //   RSP + 8*R10 : address of first argument in argument array.
 //   RSP + 8*R10 + 8 : address of return value.
 //   RBX : address of the runtime function to call.
 //   R10 : number of arguments to the call.
 // Must preserve callee saved registers R12 and R13.
 void StubCode::GenerateCallToRuntimeStub(Assembler* assembler) {
   ASSERT((R12 != CTX) && (R13 != CTX));
@@ skipping 113 matching lines @@
     __ andq(RSP, Immediate(~(OS::ActivationFrameAlignment() - 1)));
   }
 
   // Pass NativeArguments structure by value and call native function.
   __ movq(Address(RSP, isolate_offset), CTX);  // Set isolate in NativeArgs.
   __ movq(Address(RSP, argc_tag_offset), R10);  // Set argc in NativeArguments.
   __ movq(Address(RSP, argv_offset), RAX);  // Set argv in NativeArguments.
   __ leaq(RAX, Address(RBP, 2 * kWordSize));  // Compute return value addr.
   __ movq(Address(RSP, retval_offset), RAX);  // Set retval in NativeArguments.
   __ movq(RDI, RSP);  // Pass the pointer to the NativeArguments.
+  __ movq(RSI, RBX);  // Pass pointer to function entrypoint.
+  __ call(&NativeEntry::NativeCallWrapperLabel());
+
+  // Reset exit frame information in Isolate structure.
+  __ movq(Address(CTX, Isolate::top_exit_frame_info_offset()), Immediate(0));
+
+  // Load Context pointer from Isolate structure into R8.
+  __ movq(R8, Address(CTX, Isolate::top_context_offset()));
+
+  // Reset Context pointer in Isolate structure.
+  const Immediate& raw_null =
+      Immediate(reinterpret_cast<intptr_t>(Object::null()));
+  __ movq(Address(CTX, Isolate::top_context_offset()), raw_null);
+
+  // Cache Context pointer into CTX while executing Dart code.
+  __ movq(CTX, R8);
+
+  __ LeaveFrame();
+  __ ret();
+}
+
+
+// Input parameters:
+//   RSP : points to return address.
+//   RSP + 8 : address of return value.
+//   RAX : address of first argument in argument array.
+//   RBX : address of the native function to call.
+//   R10 : argc_tag including number of arguments and function kind.
+void StubCode::GenerateCallBootstrapCFunctionStub(Assembler* assembler) {
+  const intptr_t native_args_struct_offset = 0;
+  const intptr_t isolate_offset =
+      NativeArguments::isolate_offset() + native_args_struct_offset;
+  const intptr_t argc_tag_offset =
+      NativeArguments::argc_tag_offset() + native_args_struct_offset;
+  const intptr_t argv_offset =
+      NativeArguments::argv_offset() + native_args_struct_offset;
+  const intptr_t retval_offset =
+      NativeArguments::retval_offset() + native_args_struct_offset;
+
+  __ EnterFrame(0);
+
+  // Load current Isolate pointer from Context structure into R8.
+  __ movq(R8, FieldAddress(CTX, Context::isolate_offset()));
+
+  // Save exit frame information to enable stack walking as we are about
+  // to transition to native code.
+  __ movq(Address(R8, Isolate::top_exit_frame_info_offset()), RSP);
+
+  // Save current Context pointer into Isolate structure.
+  __ movq(Address(R8, Isolate::top_context_offset()), CTX);
+
+  // Cache Isolate pointer into CTX while executing native code.
+  __ movq(CTX, R8);
+
+  // Reserve space for the native arguments structure passed on the stack (the
+  // outgoing pointer parameter to the native arguments structure is passed in
+  // RDI) and align frame before entering the C++ world.
+  __ AddImmediate(RSP, Immediate(-sizeof(NativeArguments)));
+  if (OS::ActivationFrameAlignment() > 0) {
+    __ andq(RSP, Immediate(~(OS::ActivationFrameAlignment() - 1)));
+  }
+
+  // Pass NativeArguments structure by value and call native function.
+  __ movq(Address(RSP, isolate_offset), CTX);  // Set isolate in NativeArgs.
+  __ movq(Address(RSP, argc_tag_offset), R10);  // Set argc in NativeArguments.
+  __ movq(Address(RSP, argv_offset), RAX);  // Set argv in NativeArguments.
+  __ leaq(RAX, Address(RBP, 2 * kWordSize));  // Compute return value addr.
+  __ movq(Address(RSP, retval_offset), RAX);  // Set retval in NativeArguments.
+  __ movq(RDI, RSP);  // Pass the pointer to the NativeArguments.
   __ call(RBX);
 
   // Reset exit frame information in Isolate structure.
   __ movq(Address(CTX, Isolate::top_exit_frame_info_offset()), Immediate(0));
 
   // Load Context pointer from Isolate structure into R8.
   __ movq(R8, Address(CTX, Isolate::top_context_offset()));
 
   // Reset Context pointer in Isolate structure.
   const Immediate& raw_null =
@@ skipping 1984 matching lines @@
   __ movq(right, Address(RSP, 3 * kWordSize));
   GenerateIdenticalWithNumberCheckStub(assembler, left, right);
   __ popq(right);
   __ popq(left);
   __ ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64