Add 64-bit stubs to call into the runtime and to call native functions.

runtime/vm/assembler_ia32.h

 // Copyright (c) 2011, 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.
 
 #ifndef VM_ASSEMBLER_IA32_H_
 #define VM_ASSEMBLER_IA32_H_
 
 #ifndef VM_ASSEMBLER_H_
 #error Do not include assembler_ia32.h directly; use assembler.h instead.
 #endif
 
 #include "vm/assert.h"
 #include "vm/constants_ia32.h"
 #include "vm/utils.h"
 
 namespace dart {
 
 // Forward declarations.
 class RuntimeEntry;
 
 
 #if defined(TESTING) || defined(DEBUG)
 
 #if defined(TARGET_OS_WINDOWS)
-#define CHECK_STACK_ALIGNMENT {                                                \
-  uword current_sp;                                                            \
-  __asm { mov current_sp, esp }                                                \
-  ASSERT((OS::ActivationFrameAlignment() == 0) ||                              \
-         (Utils::IsAligned(current_sp, OS::ActivationFrameAlignment())));      \
-}
+// The compiler may dynamically align the stack on Windows, so do not check.
+#define CHECK_STACK_ALIGNMENT { }
 #else
 #define CHECK_STACK_ALIGNMENT {                                                \
   uword current_sp;                                                            \
   asm volatile("mov %%esp, %[current_sp]" : [current_sp] "=r" (current_sp));   \
   ASSERT((OS::ActivationFrameAlignment() == 0) ||                              \
          (Utils::IsAligned(current_sp, OS::ActivationFrameAlignment())));      \
 }
 #endif
 
 #else
@@ skipping 573 matching lines @@
 }
 
 
 inline void Assembler::EmitOperandSizeOverride() {
   EmitUint8(0x66);
 }
 
 }  // namespace dart
 
 #endif  // VM_ASSEMBLER_IA32_H_