Reset simulator top exit frame info when coming via long jump from a throw.

runtime/vm/simulator_arm.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 <math.h>  // for isnan.
 #include <setjmp.h>
 #include <stdlib.h>
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_ARM)
@@ skipping 1382 matching lines @@
         }
 #ifdef VFPv3_D32
         double zap_dvalue = static_cast<double>(icount_);
         for (int i = D16; i <= D31; i++) {
           set_dregister(static_cast<DRegister>(i), zap_dvalue);
         }
 #endif  // VFPv3_D32
 
         // Return.
         set_pc(saved_lr);
+      } else {
+        // Coming via long jump from a throw. Continue to exception handler.
+        set_top_exit_frame_info(0);
       }
 
       break;
     }
     case kBreakpointSvcCode: {
       SimulatorDebugger dbg(this);
       dbg.Stop(instr, "breakpoint");
       break;
     }
     case kStopMessageSvcCode: {
@@ skipping 1486 matching lines @@
     set_register(kStackTraceObjectReg, bit_cast<int32_t>(raw_stacktrace));
   }
   buf->Longjmp();
 }
 
 }  // namespace dart
 
 #endif  // !defined(HOST_ARCH_ARM)
 
 #endif  // defined TARGET_ARCH_ARM