ARMInstrInfo.td

def MRSsys : ABI<0b0001,(outs GPR:$dst),(ins), NoItinerary,"mrs","\t$dst, spsr",
              [/* For disassembly only; pattern left blank */]> {
  let Inst{23-20} = 0b0100;
  let Inst{7-4} = 0b0000;
}

def MSR : ABI<0b0001, (outs), (ins GPR:$src, msr_mask:$mask), NoItinerary,
              "msr", "\tcpsr$mask, $src",
              [/* For disassembly only; pattern left blank */]> {
  let Inst{23-20} = 0b0010;
  let Inst{7-4} = 0b0000;
}

def MSRi : ABI<0b0011, (outs), (ins so_imm:$a, msr_mask:$mask), NoItinerary,
              "msr", "\tcpsr$mask, $a",
              [/* For disassembly only; pattern left blank */]> {
  let Inst{23-20} = 0b0010;
  let Inst{7-4} = 0b0000;
}

def MSRsys : ABI<0b0001, (outs), (ins GPR:$src, msr_mask:$mask), NoItinerary,
              "msr", "\tspsr$mask, $src",
              [/* For disassembly only; pattern left blank */]> {
  let Inst{23-20} = 0b0110;
  let Inst{7-4} = 0b0000;
}

def MSRsysi : ABI<0b0011, (outs), (ins so_imm:$a, msr_mask:$mask), NoItinerary,
              "msr", "\tspsr$mask, $a",
              [/* For disassembly only; pattern left blank */]> {
  let Inst{23-20} = 0b0110;
  let Inst{7-4} = 0b0000;
}