[arm64] Fix the GetStackPointer stub to return the C stack pointer.

runtime/vm/stub_code.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 RUNTIME_VM_STUB_CODE_H_
 #define RUNTIME_VM_STUB_CODE_H_
 
 #include "vm/allocation.h"
 #include "vm/assembler.h"
 
 namespace dart {
 
 // Forward declarations.
 class Code;
 class Isolate;
 class ObjectPointerVisitor;
 class RawCode;
 class SnapshotReader;
 class SnapshotWriter;
 
 // List of stubs created in the VM isolate, these stubs are shared by different
 // isolates running in this dart process.
 #if !defined(TARGET_ARCH_DBC)
 #define VM_STUB_CODE_LIST(V)                                                   \
-  V(GetStackPointer)                                                           \
+  V(GetCStackPointer)                                                          \
   V(JumpToFrame)                                                               \
   V(RunExceptionHandler)                                                       \
   V(DeoptForRewind)                                                            \
   V(UpdateStoreBuffer)                                                         \
   V(PrintStopMessage)                                                          \
   V(CallToRuntime)                                                             \
   V(LazyCompile)                                                               \
   V(CallBootstrapNative)                                                       \
   V(CallNoScopeNative)                                                         \
   V(CallAutoScopeNative)                                                       \
@@ skipping 172 matching lines @@
 
 // Zap value used to indicate unused CODE_REG in deopt.
 static const uword kZapCodeReg = 0xf1f1f1f1;
 
 // Zap value used to indicate unused return address in deopt.
 static const uword kZapReturnAddress = 0xe1e1e1e1;
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_STUB_CODE_H_