Support more debugger commands in the wire protocol

runtime/platform/c99_support_win.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 PLATFORM_C99_SUPPORT_WIN_H_
 #define PLATFORM_C99_SUPPORT_WIN_H_
 
 // Visual C++ is missing a bunch of C99 math macros and
 // functions. Define them here.
 
 #include <float.h>
 
 static const unsigned __int64 kQuietNaNMask =
     static_cast<unsigned __int64>(0xfff) << 51;
 
+
+#ifndef va_copy
+#define va_copy(dst, src) (memmove(&(dst), &(src), sizeof(dst)))
+#endif  /* va_copy */
+
+
 #define INFINITY HUGE_VAL
 #define NAN \
     *reinterpret_cast<const double*>(&kQuietNaNMask)
 
 static inline int isinf(double x) {
   return (_fpclass(x) & (_FPCLASS_PINF | _FPCLASS_NINF)) != 0;
 }
 
 static inline int isnan(double x) {
   return _isnan(x);
@@ skipping 17 matching lines @@
 
 static inline double round(double x) {
   if (x < 0) {
     return ceil(x - 0.5);
   } else {
     return floor(x + 0.5);
   }
 }
 
 #endif  // PLATFORM_C99_SUPPORT_WIN_H_