where can i get the latest source code of "msp432_startup_ewarm.c" (BSD Release of MSP432 Driver Library)?

I have the file msp432_startup_ewarm.c, but the version is very old as follow:

* -------------------------------------------
* MSP432 DriverLib - v2_20_00_08
* -------------------------------------------
*
* --COPYRIGHT--,BSD,BSD
* Copyright (c) 2014, Texas Instruments Incorporated
* All rights reserved.

I have also got the lastest driverLib(V3_21_00_05), but the lib don't include file "msp432_startup_ewarm.c", so where can i get the latest version of "msp432_startup_ewarm.c"?

Thanks~~