Use the library functions for shift operations in BaseLib for a 64-bit integer where the code is shared for 32-bit and 64-bit.
Defining bitfields in structures with > 32 bits will cause these types of issues on IA32 builds. So the largest bitfield should be type UINT32 with a max size of :32.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10983 6f19259b-4bc3-4df7-8a09-765794883524