a) Briefly describe the register set visible to the programmer inthe User mode of the ARM-based processors.
b) List and briefly describe the six priviledge modes in which anARM-based processor can operate.
c) Assuming that an ARM-based processor register contains ox12345678, show the order in which the bytes of this word would bewritten in memory starting at address 0x00000000 in a machine that uses Little-Endian byte ordering.