Fix issue 1968, replace usage of inline 'asm' constructs in 'stack alignment', 'jump to exception h…

vm/cpu_arm.cc

 // Copyright (c) 2012, 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_ARM)
 
 #if defined(HOST_ARCH_ARM)
 #include <sys/syscall.h>  /* NOLINT */
@@ skipping 13 matching lines @@
 #error FlushICache only tested/supported on EABI ARM currently.
 #endif
 
 #else  // defined(HOST_ARCH_ARM)
   // When running in simulated mode we do not need to flush the ICache because
   // we are not running on the actual hardware.
 #endif  // defined(HOST_ARCH_ARM)
 }
 
 
-void CPU::JumpToExceptionHandler(uword program_counter,
-                                 uword stack_pointer,
-                                 uword frame_pointer,
-                                 const Instance& exception_object,
-                                 const Instance& stacktrace_object) {
-  UNIMPLEMENTED();
-}
-
-
-void CPU::JumpToErrorHandler(
-    uword program_counter,
-    uword stack_pointer,
-    uword frame_pointer,
-    const Error& error) {
-  UNIMPLEMENTED();
-}
-
-
 const char* CPU::Id() {
   return "arm";
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM