Add code to emulate RFE Arm instruction.

Add new instruction context for RFE instruction.

Add several new helper functions to help emulate RFE instruction
(including CurrentModeIsPrivileged, BadMode, and CPSRWriteByInstr).




git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@126965 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed