+static DecodeStatus DecodeTSTInstruction(MCInst &Inst, unsigned Insn,
+ uint64_t Address, const void *Decoder) {
+ DecodeStatus S = MCDisassembler::Success;
+
+ unsigned Pred = fieldFromInstruction(Insn, 28, 4);
+ unsigned Rn = fieldFromInstruction(Insn, 16, 4);
+ unsigned Rm = fieldFromInstruction(Insn, 0, 4);
+
+ if (Pred == 0xF)
+ return DecodeSETPANInstruction(Inst, Insn, Address, Decoder);
+
+ if (!Check(S, DecodeGPRRegisterClass(Inst, Rn, Address, Decoder)))
+ return MCDisassembler::Fail;
+ if (!Check(S, DecodeGPRRegisterClass(Inst, Rm, Address, Decoder)))
+ return MCDisassembler::Fail;
+ if (!Check(S, DecodePredicateOperand(Inst, Pred, Address, Decoder)))
+ return MCDisassembler::Fail;
+
+ return S;
+}
+
+static DecodeStatus DecodeSETPANInstruction(MCInst &Inst, unsigned Insn,
+ uint64_t Address, const void *Decoder) {
+ DecodeStatus S = MCDisassembler::Success;
+
+ unsigned Imm = fieldFromInstruction(Insn, 9, 1);
+
+ const MCDisassembler *Dis = static_cast<const MCDisassembler*>(Decoder);
+ const FeatureBitset &FeatureBits = Dis->getSubtargetInfo().getFeatureBits();
+
+ if (!FeatureBits[ARM::HasV8_1aOps] ||
+ !FeatureBits[ARM::HasV8Ops])
+ return MCDisassembler::Fail;
+
+ // Decoder can be called from DecodeTST, which does not check the full
+ // encoding is valid.
+ if (fieldFromInstruction(Insn, 20,12) != 0xf11 ||
+ fieldFromInstruction(Insn, 4,4) != 0)
+ return MCDisassembler::Fail;
+ if (fieldFromInstruction(Insn, 10,10) != 0 ||
+ fieldFromInstruction(Insn, 0,4) != 0)
+ S = MCDisassembler::SoftFail;
+
+ Inst.setOpcode(ARM::SETPAN);
+ Inst.addOperand(MCOperand::CreateImm(Imm));
+
+ return S;
+}
+