def Imm0_3AsmOperand: ImmAsmOperand { let Name = "Imm0_3"; }
def imm0_3 : Operand<i32> { let ParserMatchClass = Imm0_3AsmOperand; }
+/// imm0_4 predicate - Immediate in the range [0,4].
+def Imm0_4AsmOperand : ImmAsmOperand { let Name = "Imm0_4"; }
+def imm0_4 : Operand<i32>, ImmLeaf<i32, [{ return Imm >= 0 && Imm < 5; }]> {
+ let ParserMatchClass = Imm0_4AsmOperand;
+ let DecoderMethod = "DecodeImm0_4";
+}
+
/// imm0_7 predicate - Immediate in the range [0,7].
def Imm0_7AsmOperand: ImmAsmOperand { let Name = "Imm0_7"; }
def imm0_7 : Operand<i32>, ImmLeaf<i32, [{
NoItinerary, []>;
}
-def HINT : AI<(outs), (ins imm0_255:$imm), MiscFrm, NoItinerary,
+def HINT : AI<(outs), (ins imm0_4:$imm), MiscFrm, NoItinerary,
"hint", "\t$imm", []>, Requires<[IsARM, HasV6]> {
- bits<8> imm;
- let Inst{27-8} = 0b00110010000011110000;
- let Inst{7-0} = imm;
+ bits<3> imm;
+ let Inst{27-3} = 0b0011001000001111000000000;
+ let Inst{2-0} = imm;
}
def : InstAlias<"nop$p", (HINT 0, pred:$p)>, Requires<[IsARM, HasV6T2]>;
int64_t Value = CE->getValue();
return ((Value & 3) == 0) && Value >= -1020 && Value <= 1020;
}
+ bool isImm0_4() const {
+ if (!isImm()) return false;
+ const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
+ if (!CE) return false;
+ int64_t Value = CE->getValue();
+ return Value >= 0 && Value < 5;
+ }
bool isImm0_1020s4() const {
if (!isImm()) return false;
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
uint64_t Address, const void *Decoder);
static DecodeStatus DecodeVCVTQ(MCInst &Inst, unsigned Insn,
uint64_t Address, const void *Decoder);
+static DecodeStatus DecodeImm0_4(MCInst &Inst, unsigned Insn, uint64_t Address,
+ const void *Decoder);
static DecodeStatus DecodeThumbAddSpecialReg(MCInst &Inst, uint16_t Insn,
return S;
}
+static DecodeStatus DecodeImm0_4(MCInst &Inst, unsigned Insn, uint64_t Address,
+ const void *Decoder)
+{
+ unsigned Imm = fieldFromInstruction(Insn, 0, 3);
+ if (Imm > 4) return MCDisassembler::Fail;
+ Inst.addOperand(MCOperand::CreateImm(Imm));
+ return MCDisassembler::Success;
+}
+
static DecodeStatus DecodeLDR(MCInst &Inst, unsigned Val,
uint64_t Address, const void *Decoder) {
DecodeStatus S = MCDisassembler::Success;
@ CHECK: wfilt @ encoding: [0x03,0xf0,0x20,0xb3]
@ CHECK: yield @ encoding: [0x01,0xf0,0x20,0xe3]
@ CHECK: yieldne @ encoding: [0x01,0xf0,0x20,0x13]
-@ CHECK: hint #5 @ encoding: [0x05,0xf0,0x20,0xe3]
+@ CHECK-NOT: hint #5
@ CHECK: sev @ encoding: [0x04,0xf0,0x20,0xe3]
@ CHECK: wfi @ encoding: [0x03,0xf0,0x20,0xe3]
@ CHECK: wfe @ encoding: [0x02,0xf0,0x20,0xe3]