src/os/windows/vm/os_windows.cpp

*** 164,179 ****
  // For Windows at the moment does nothing
  void os::run_periodic_checks() {
    return;
  }
  
- #ifndef _WIN64
  // previous UnhandledExceptionFilter, if there is one
  static LPTOP_LEVEL_EXCEPTION_FILTER prev_uef_handler = NULL;
  
  LONG WINAPI Handle_FLT_Exception(struct _EXCEPTION_POINTERS* exceptionInfo);
- #endif
  void os::init_system_properties_values() {
    /* sysclasspath, java_home, dll_dir */
    {
        char *home_path;
        char *dll_path;
--- 164,177 ----
*** 2238,2250 ****
    // Continue the execution
  #endif
    return EXCEPTION_CONTINUE_EXECUTION;
  }
  
- #ifndef  _WIN64
  //-----------------------------------------------------------------------------
  LONG WINAPI Handle_FLT_Exception(struct _EXCEPTION_POINTERS* exceptionInfo) {
    // handle exception caused by native method modifying control word
    PCONTEXT ctx = exceptionInfo->ContextRecord;
    DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode;
  
    switch (exception_code) {
--- 2236,2248 ----
    // Continue the execution
  #endif
    return EXCEPTION_CONTINUE_EXECUTION;
  }
  
  //-----------------------------------------------------------------------------
  LONG WINAPI Handle_FLT_Exception(struct _EXCEPTION_POINTERS* exceptionInfo) {
+ #ifndef  _WIN64
    // handle exception caused by native method modifying control word
    PCONTEXT ctx = exceptionInfo->ContextRecord;
    DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode;
  
    switch (exception_code) {
*** 2268,2299 ****
    if (prev_uef_handler != NULL) {
      // We didn't handle this exception so pass it to the previous
      // UnhandledExceptionFilter.
      return (prev_uef_handler)(exceptionInfo);
    }
! 
!   return EXCEPTION_CONTINUE_SEARCH;
! }
! #else //_WIN64
  /*
    On Windows, the mxcsr control bits are non-volatile across calls
    See also CR 6192333
!   If EXCEPTION_FLT_* happened after some native method modified
!   mxcsr - it is not a jvm fault.
!   However should we decide to restore of mxcsr after a faulty
!   native method we can uncomment following code
        jint MxCsr = INITIAL_MXCSR;
          // we can't use StubRoutines::addr_mxcsr_std()
          // because in Win64 mxcsr is not saved there
        if (MxCsr != ctx->MxCsr) {
          ctx->MxCsr = MxCsr;
          return EXCEPTION_CONTINUE_EXECUTION;
        }
  
! */
! #endif //_WIN64
! 
  
  // Fatal error reporting is single threaded so we can make this a
  // static and preallocated.  If it's more than MAX_PATH silently ignore
  // it.
  static char saved_error_file[MAX_PATH] = {0};
--- 2266,2292 ----
    if (prev_uef_handler != NULL) {
      // We didn't handle this exception so pass it to the previous
      // UnhandledExceptionFilter.
      return (prev_uef_handler)(exceptionInfo);
    }
! #else // !_WIN64
  /*
    On Windows, the mxcsr control bits are non-volatile across calls
    See also CR 6192333
! */
!    PCONTEXT ctx = exceptionInfo->ContextRecord;
     jint MxCsr = INITIAL_MXCSR;
     // we can't use StubRoutines::addr_mxcsr_std()
     // because in Win64 mxcsr is not saved there
     if (MxCsr != ctx->MxCsr) {
       ctx->MxCsr = MxCsr;
       return EXCEPTION_CONTINUE_EXECUTION;
     }
+ #endif // !_WIN64
  
!   return EXCEPTION_CONTINUE_SEARCH;
! }
  
  // Fatal error reporting is single threaded so we can make this a
  // static and preallocated.  If it's more than MAX_PATH silently ignore
  // it.
  static char saved_error_file[MAX_PATH] = {0};
*** 2638,2656 ****
        case EXCEPTION_INT_OVERFLOW:
          return Handle_IDiv_Exception(exceptionInfo);
  
        } // switch
      }
- #ifndef _WIN64
      if (((thread->thread_state() == _thread_in_Java) ||
          (thread->thread_state() == _thread_in_native)) &&
          exception_code != EXCEPTION_UNCAUGHT_CXX_EXCEPTION)
      {
        LONG result=Handle_FLT_Exception(exceptionInfo);
        if (result==EXCEPTION_CONTINUE_EXECUTION) return result;
      }
- #endif //_WIN64
    }
  
    if (exception_code != EXCEPTION_BREAKPOINT) {
      report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord,
                   exceptionInfo->ContextRecord);
--- 2631,2647 ----