def METHOD_NAME(syscalls):
    # This function will map a list of (condition, syscall_list) tuples
    # From: [(cond1, ["SyscallOne", "SysCallTwo"]),
    #        (cond2, ["SyscallThree", ...])]
    # Into: [(cond1, [("SyscallOne", -1), ("SyscallTwo", -2)]),
    #        (cond2, [(SyscallThree", -3), ...])]
    r = itertools.count(start=-1, step=-1)
    return [(cond, [(s, next(r)) for s in lst]) for (cond, lst) in syscalls]