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import gdb

ENABLE_EMMT = 0
TC_PREFIX = None
TC_PREFIX_DONE = False

class enable_emmt (gdb.Command):
    def __init__ (self):
        gdb.Command.__init__ (self, "enable sgx_emmt", gdb.COMMAND_RUNNING)

    def invoke (self, arg, from_tty):
        global ENABLE_EMMT
        ENABLE_EMMT = 1

class disable_emmt (gdb.Command):
    def __init__ (self):
        gdb.Command.__init__ (self, "disable sgx_emmt", gdb.COMMAND_RUNNING)

    def invoke (self, arg, from_tty):
        global ENABLE_EMMT
        ENABLE_EMMT = 0

class show_emmt (gdb.Command):
    def __init__ (self):
        gdb.Command.__init__ (self, "show sgx_emmt", gdb.COMMAND_RUNNING)

    def invoke (self, arg, from_tty):
        global ENABLE_EMMT
        if ENABLE_EMMT == 1:
            print ("sgx_emmt enabled")
        if ENABLE_EMMT == 0:
            print ("sgx_emmt disabled")

class set_tc_prefix(gdb.Command):
    def __init__ (self):
        gdb.Command.__init__ (self, "set_tc_prefix", gdb.COMMAND_NONE)

    def invoke (self, arg, from_tty):
        global TC_PREFIX, TC_PREFIX_DONE
        #For internal use, and don't allow input by gdb user
        if TC_PREFIX_DONE == True:
            return
        TC_PREFIX = arg
        TC_PREFIX_DONE = True

class get_tc_prefix(gdb.Command):
    def __init__ (self):
        gdb.Command.__init__ (self, "get_tc_prefix", gdb.COMMAND_NONE)

    def invoke (self, arg, from_tty):
        global TC_PREFIX
        #For internal use, and don't allow output to tty
        if from_tty == True:
            return
        print (TC_PREFIX)

def init_emmt():
    enable_emmt()
    disable_emmt()
    show_emmt()
    set_tc_prefix()
    get_tc_prefix()
