1 //===-- ARMAsmParser.cpp - Parse ARM assembly to MCInst instructions ------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "MCTargetDesc/ARMBaseInfo.h"
11 #include "MCTargetDesc/ARMAddressingModes.h"
12 #include "MCTargetDesc/ARMMCExpr.h"
13 #include "llvm/MC/MCParser/MCAsmLexer.h"
14 #include "llvm/MC/MCParser/MCAsmParser.h"
15 #include "llvm/MC/MCParser/MCParsedAsmOperand.h"
16 #include "llvm/MC/MCAsmInfo.h"
17 #include "llvm/MC/MCContext.h"
18 #include "llvm/MC/MCStreamer.h"
19 #include "llvm/MC/MCExpr.h"
20 #include "llvm/MC/MCInst.h"
21 #include "llvm/MC/MCInstrDesc.h"
22 #include "llvm/MC/MCRegisterInfo.h"
23 #include "llvm/MC/MCSubtargetInfo.h"
24 #include "llvm/MC/MCTargetAsmParser.h"
25 #include "llvm/Support/MathExtras.h"
26 #include "llvm/Support/SourceMgr.h"
27 #include "llvm/Support/TargetRegistry.h"
28 #include "llvm/Support/raw_ostream.h"
29 #include "llvm/ADT/BitVector.h"
30 #include "llvm/ADT/OwningPtr.h"
31 #include "llvm/ADT/STLExtras.h"
32 #include "llvm/ADT/SmallVector.h"
33 #include "llvm/ADT/StringSwitch.h"
34 #include "llvm/ADT/Twine.h"
42 class ARMAsmParser : public MCTargetAsmParser {
47 ARMCC::CondCodes Cond; // Condition for IT block.
48 unsigned Mask:4; // Condition mask for instructions.
49 // Starting at first 1 (from lsb).
50 // '1' condition as indicated in IT.
51 // '0' inverse of condition (else).
52 // Count of instructions in IT block is
53 // 4 - trailingzeroes(mask)
55 bool FirstCond; // Explicit flag for when we're parsing the
56 // First instruction in the IT block. It's
57 // implied in the mask, so needs special
60 unsigned CurPosition; // Current position in parsing of IT
61 // block. In range [0,3]. Initialized
62 // according to count of instructions in block.
63 // ~0U if no active IT block.
65 bool inITBlock() { return ITState.CurPosition != ~0U;}
66 void forwardITPosition() {
67 if (!inITBlock()) return;
68 // Move to the next instruction in the IT block, if there is one. If not,
69 // mark the block as done.
70 unsigned TZ = CountTrailingZeros_32(ITState.Mask);
71 if (++ITState.CurPosition == 5 - TZ)
72 ITState.CurPosition = ~0U; // Done with the IT block after this.
76 MCAsmParser &getParser() const { return Parser; }
77 MCAsmLexer &getLexer() const { return Parser.getLexer(); }
79 void Warning(SMLoc L, const Twine &Msg) { Parser.Warning(L, Msg); }
80 bool Error(SMLoc L, const Twine &Msg) { return Parser.Error(L, Msg); }
82 int tryParseRegister();
83 bool tryParseRegisterWithWriteBack(SmallVectorImpl<MCParsedAsmOperand*> &);
84 int tryParseShiftRegister(SmallVectorImpl<MCParsedAsmOperand*> &);
85 bool parseRegisterList(SmallVectorImpl<MCParsedAsmOperand*> &);
86 bool parseMemory(SmallVectorImpl<MCParsedAsmOperand*> &);
87 bool parseOperand(SmallVectorImpl<MCParsedAsmOperand*> &, StringRef Mnemonic);
88 bool parsePrefix(ARMMCExpr::VariantKind &RefKind);
89 bool parseMemRegOffsetShift(ARM_AM::ShiftOpc &ShiftType,
90 unsigned &ShiftAmount);
91 bool parseDirectiveWord(unsigned Size, SMLoc L);
92 bool parseDirectiveThumb(SMLoc L);
93 bool parseDirectiveThumbFunc(SMLoc L);
94 bool parseDirectiveCode(SMLoc L);
95 bool parseDirectiveSyntax(SMLoc L);
97 StringRef splitMnemonic(StringRef Mnemonic, unsigned &PredicationCode,
98 bool &CarrySetting, unsigned &ProcessorIMod,
100 void getMnemonicAcceptInfo(StringRef Mnemonic, bool &CanAcceptCarrySet,
101 bool &CanAcceptPredicationCode);
103 bool isThumb() const {
104 // FIXME: Can tablegen auto-generate this?
105 return (STI.getFeatureBits() & ARM::ModeThumb) != 0;
107 bool isThumbOne() const {
108 return isThumb() && (STI.getFeatureBits() & ARM::FeatureThumb2) == 0;
110 bool isThumbTwo() const {
111 return isThumb() && (STI.getFeatureBits() & ARM::FeatureThumb2);
113 bool hasV6Ops() const {
114 return STI.getFeatureBits() & ARM::HasV6Ops;
116 bool hasV7Ops() const {
117 return STI.getFeatureBits() & ARM::HasV7Ops;
120 unsigned FB = ComputeAvailableFeatures(STI.ToggleFeature(ARM::ModeThumb));
121 setAvailableFeatures(FB);
123 bool isMClass() const {
124 return STI.getFeatureBits() & ARM::FeatureMClass;
127 /// @name Auto-generated Match Functions
130 #define GET_ASSEMBLER_HEADER
131 #include "ARMGenAsmMatcher.inc"
135 OperandMatchResultTy parseITCondCode(SmallVectorImpl<MCParsedAsmOperand*>&);
136 OperandMatchResultTy parseCoprocNumOperand(
137 SmallVectorImpl<MCParsedAsmOperand*>&);
138 OperandMatchResultTy parseCoprocRegOperand(
139 SmallVectorImpl<MCParsedAsmOperand*>&);
140 OperandMatchResultTy parseCoprocOptionOperand(
141 SmallVectorImpl<MCParsedAsmOperand*>&);
142 OperandMatchResultTy parseMemBarrierOptOperand(
143 SmallVectorImpl<MCParsedAsmOperand*>&);
144 OperandMatchResultTy parseProcIFlagsOperand(
145 SmallVectorImpl<MCParsedAsmOperand*>&);
146 OperandMatchResultTy parseMSRMaskOperand(
147 SmallVectorImpl<MCParsedAsmOperand*>&);
148 OperandMatchResultTy parsePKHImm(SmallVectorImpl<MCParsedAsmOperand*> &O,
149 StringRef Op, int Low, int High);
150 OperandMatchResultTy parsePKHLSLImm(SmallVectorImpl<MCParsedAsmOperand*> &O) {
151 return parsePKHImm(O, "lsl", 0, 31);
153 OperandMatchResultTy parsePKHASRImm(SmallVectorImpl<MCParsedAsmOperand*> &O) {
154 return parsePKHImm(O, "asr", 1, 32);
156 OperandMatchResultTy parseSetEndImm(SmallVectorImpl<MCParsedAsmOperand*>&);
157 OperandMatchResultTy parseShifterImm(SmallVectorImpl<MCParsedAsmOperand*>&);
158 OperandMatchResultTy parseRotImm(SmallVectorImpl<MCParsedAsmOperand*>&);
159 OperandMatchResultTy parseBitfield(SmallVectorImpl<MCParsedAsmOperand*>&);
160 OperandMatchResultTy parsePostIdxReg(SmallVectorImpl<MCParsedAsmOperand*>&);
161 OperandMatchResultTy parseAM3Offset(SmallVectorImpl<MCParsedAsmOperand*>&);
162 OperandMatchResultTy parseFPImm(SmallVectorImpl<MCParsedAsmOperand*>&);
163 OperandMatchResultTy parseVectorList(SmallVectorImpl<MCParsedAsmOperand*>&);
165 // Asm Match Converter Methods
166 bool cvtT2LdrdPre(MCInst &Inst, unsigned Opcode,
167 const SmallVectorImpl<MCParsedAsmOperand*> &);
168 bool cvtT2StrdPre(MCInst &Inst, unsigned Opcode,
169 const SmallVectorImpl<MCParsedAsmOperand*> &);
170 bool cvtLdWriteBackRegT2AddrModeImm8(MCInst &Inst, unsigned Opcode,
171 const SmallVectorImpl<MCParsedAsmOperand*> &);
172 bool cvtStWriteBackRegT2AddrModeImm8(MCInst &Inst, unsigned Opcode,
173 const SmallVectorImpl<MCParsedAsmOperand*> &);
174 bool cvtLdWriteBackRegAddrMode2(MCInst &Inst, unsigned Opcode,
175 const SmallVectorImpl<MCParsedAsmOperand*> &);
176 bool cvtLdWriteBackRegAddrModeImm12(MCInst &Inst, unsigned Opcode,
177 const SmallVectorImpl<MCParsedAsmOperand*> &);
178 bool cvtStWriteBackRegAddrModeImm12(MCInst &Inst, unsigned Opcode,
179 const SmallVectorImpl<MCParsedAsmOperand*> &);
180 bool cvtStWriteBackRegAddrMode2(MCInst &Inst, unsigned Opcode,
181 const SmallVectorImpl<MCParsedAsmOperand*> &);
182 bool cvtStWriteBackRegAddrMode3(MCInst &Inst, unsigned Opcode,
183 const SmallVectorImpl<MCParsedAsmOperand*> &);
184 bool cvtLdExtTWriteBackImm(MCInst &Inst, unsigned Opcode,
185 const SmallVectorImpl<MCParsedAsmOperand*> &);
186 bool cvtLdExtTWriteBackReg(MCInst &Inst, unsigned Opcode,
187 const SmallVectorImpl<MCParsedAsmOperand*> &);
188 bool cvtStExtTWriteBackImm(MCInst &Inst, unsigned Opcode,
189 const SmallVectorImpl<MCParsedAsmOperand*> &);
190 bool cvtStExtTWriteBackReg(MCInst &Inst, unsigned Opcode,
191 const SmallVectorImpl<MCParsedAsmOperand*> &);
192 bool cvtLdrdPre(MCInst &Inst, unsigned Opcode,
193 const SmallVectorImpl<MCParsedAsmOperand*> &);
194 bool cvtStrdPre(MCInst &Inst, unsigned Opcode,
195 const SmallVectorImpl<MCParsedAsmOperand*> &);
196 bool cvtLdWriteBackRegAddrMode3(MCInst &Inst, unsigned Opcode,
197 const SmallVectorImpl<MCParsedAsmOperand*> &);
198 bool cvtThumbMultiply(MCInst &Inst, unsigned Opcode,
199 const SmallVectorImpl<MCParsedAsmOperand*> &);
200 bool cvtVLDwbFixed(MCInst &Inst, unsigned Opcode,
201 const SmallVectorImpl<MCParsedAsmOperand*> &);
202 bool cvtVLDwbRegister(MCInst &Inst, unsigned Opcode,
203 const SmallVectorImpl<MCParsedAsmOperand*> &);
204 bool cvtVSTwbFixed(MCInst &Inst, unsigned Opcode,
205 const SmallVectorImpl<MCParsedAsmOperand*> &);
206 bool cvtVSTwbRegister(MCInst &Inst, unsigned Opcode,
207 const SmallVectorImpl<MCParsedAsmOperand*> &);
209 bool validateInstruction(MCInst &Inst,
210 const SmallVectorImpl<MCParsedAsmOperand*> &Ops);
211 void processInstruction(MCInst &Inst,
212 const SmallVectorImpl<MCParsedAsmOperand*> &Ops);
213 bool shouldOmitCCOutOperand(StringRef Mnemonic,
214 SmallVectorImpl<MCParsedAsmOperand*> &Operands);
217 enum ARMMatchResultTy {
218 Match_RequiresITBlock = FIRST_TARGET_MATCH_RESULT_TY,
219 Match_RequiresNotITBlock,
224 ARMAsmParser(MCSubtargetInfo &_STI, MCAsmParser &_Parser)
225 : MCTargetAsmParser(), STI(_STI), Parser(_Parser) {
226 MCAsmParserExtension::Initialize(_Parser);
228 // Initialize the set of available features.
229 setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
231 // Not in an ITBlock to start with.
232 ITState.CurPosition = ~0U;
235 // Implementation of the MCTargetAsmParser interface:
236 bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc);
237 bool ParseInstruction(StringRef Name, SMLoc NameLoc,
238 SmallVectorImpl<MCParsedAsmOperand*> &Operands);
239 bool ParseDirective(AsmToken DirectiveID);
241 unsigned checkTargetMatchPredicate(MCInst &Inst);
243 bool MatchAndEmitInstruction(SMLoc IDLoc,
244 SmallVectorImpl<MCParsedAsmOperand*> &Operands,
247 } // end anonymous namespace
251 /// ARMOperand - Instances of this class represent a parsed ARM machine
253 class ARMOperand : public MCParsedAsmOperand {
278 k_BitfieldDescriptor,
282 SMLoc StartLoc, EndLoc;
283 SmallVector<unsigned, 8> Registers;
287 ARMCC::CondCodes Val;
307 ARM_PROC::IFlags Val;
323 // A vector register list is a sequential list of 1 to 4 registers.
338 unsigned Val; // encoded 8-bit representation
341 /// Combined record for all forms of ARM address expressions.
344 // Offset is in OffsetReg or OffsetImm. If both are zero, no offset
346 const MCConstantExpr *OffsetImm; // Offset immediate value
347 unsigned OffsetRegNum; // Offset register num, when OffsetImm == NULL
348 ARM_AM::ShiftOpc ShiftType; // Shift type for OffsetReg
349 unsigned ShiftImm; // shift for OffsetReg.
350 unsigned Alignment; // 0 = no alignment specified
351 // n = alignment in bytes (8, 16, or 32)
352 unsigned isNegative : 1; // Negated OffsetReg? (~'U' bit)
358 ARM_AM::ShiftOpc ShiftTy;
367 ARM_AM::ShiftOpc ShiftTy;
373 ARM_AM::ShiftOpc ShiftTy;
386 ARMOperand(KindTy K) : MCParsedAsmOperand(), Kind(K) {}
388 ARMOperand(const ARMOperand &o) : MCParsedAsmOperand() {
390 StartLoc = o.StartLoc;
407 case k_DPRRegisterList:
408 case k_SPRRegisterList:
409 Registers = o.Registers;
412 VectorList = o.VectorList;
419 CoprocOption = o.CoprocOption;
427 case k_MemBarrierOpt:
433 case k_PostIndexRegister:
434 PostIdxReg = o.PostIdxReg;
442 case k_ShifterImmediate:
443 ShifterImm = o.ShifterImm;
445 case k_ShiftedRegister:
446 RegShiftedReg = o.RegShiftedReg;
448 case k_ShiftedImmediate:
449 RegShiftedImm = o.RegShiftedImm;
451 case k_RotateImmediate:
454 case k_BitfieldDescriptor:
455 Bitfield = o.Bitfield;
458 VectorIndex = o.VectorIndex;
463 /// getStartLoc - Get the location of the first token of this operand.
464 SMLoc getStartLoc() const { return StartLoc; }
465 /// getEndLoc - Get the location of the last token of this operand.
466 SMLoc getEndLoc() const { return EndLoc; }
468 ARMCC::CondCodes getCondCode() const {
469 assert(Kind == k_CondCode && "Invalid access!");
473 unsigned getCoproc() const {
474 assert((Kind == k_CoprocNum || Kind == k_CoprocReg) && "Invalid access!");
478 StringRef getToken() const {
479 assert(Kind == k_Token && "Invalid access!");
480 return StringRef(Tok.Data, Tok.Length);
483 unsigned getReg() const {
484 assert((Kind == k_Register || Kind == k_CCOut) && "Invalid access!");
488 const SmallVectorImpl<unsigned> &getRegList() const {
489 assert((Kind == k_RegisterList || Kind == k_DPRRegisterList ||
490 Kind == k_SPRRegisterList) && "Invalid access!");
494 const MCExpr *getImm() const {
495 assert(Kind == k_Immediate && "Invalid access!");
499 unsigned getFPImm() const {
500 assert(Kind == k_FPImmediate && "Invalid access!");
504 unsigned getVectorIndex() const {
505 assert(Kind == k_VectorIndex && "Invalid access!");
506 return VectorIndex.Val;
509 ARM_MB::MemBOpt getMemBarrierOpt() const {
510 assert(Kind == k_MemBarrierOpt && "Invalid access!");
514 ARM_PROC::IFlags getProcIFlags() const {
515 assert(Kind == k_ProcIFlags && "Invalid access!");
519 unsigned getMSRMask() const {
520 assert(Kind == k_MSRMask && "Invalid access!");
524 bool isCoprocNum() const { return Kind == k_CoprocNum; }
525 bool isCoprocReg() const { return Kind == k_CoprocReg; }
526 bool isCoprocOption() const { return Kind == k_CoprocOption; }
527 bool isCondCode() const { return Kind == k_CondCode; }
528 bool isCCOut() const { return Kind == k_CCOut; }
529 bool isITMask() const { return Kind == k_ITCondMask; }
530 bool isITCondCode() const { return Kind == k_CondCode; }
531 bool isImm() const { return Kind == k_Immediate; }
532 bool isFPImm() const { return Kind == k_FPImmediate; }
533 bool isImm8s4() const {
534 if (Kind != k_Immediate)
536 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
537 if (!CE) return false;
538 int64_t Value = CE->getValue();
539 return ((Value & 3) == 0) && Value >= -1020 && Value <= 1020;
541 bool isImm0_1020s4() const {
542 if (Kind != k_Immediate)
544 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
545 if (!CE) return false;
546 int64_t Value = CE->getValue();
547 return ((Value & 3) == 0) && Value >= 0 && Value <= 1020;
549 bool isImm0_508s4() const {
550 if (Kind != k_Immediate)
552 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
553 if (!CE) return false;
554 int64_t Value = CE->getValue();
555 return ((Value & 3) == 0) && Value >= 0 && Value <= 508;
557 bool isImm0_255() const {
558 if (Kind != k_Immediate)
560 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
561 if (!CE) return false;
562 int64_t Value = CE->getValue();
563 return Value >= 0 && Value < 256;
565 bool isImm0_7() const {
566 if (Kind != k_Immediate)
568 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
569 if (!CE) return false;
570 int64_t Value = CE->getValue();
571 return Value >= 0 && Value < 8;
573 bool isImm0_15() const {
574 if (Kind != k_Immediate)
576 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
577 if (!CE) return false;
578 int64_t Value = CE->getValue();
579 return Value >= 0 && Value < 16;
581 bool isImm0_31() const {
582 if (Kind != k_Immediate)
584 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
585 if (!CE) return false;
586 int64_t Value = CE->getValue();
587 return Value >= 0 && Value < 32;
589 bool isImm1_16() const {
590 if (Kind != k_Immediate)
592 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
593 if (!CE) return false;
594 int64_t Value = CE->getValue();
595 return Value > 0 && Value < 17;
597 bool isImm1_32() const {
598 if (Kind != k_Immediate)
600 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
601 if (!CE) return false;
602 int64_t Value = CE->getValue();
603 return Value > 0 && Value < 33;
605 bool isImm0_65535() const {
606 if (Kind != k_Immediate)
608 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
609 if (!CE) return false;
610 int64_t Value = CE->getValue();
611 return Value >= 0 && Value < 65536;
613 bool isImm0_65535Expr() const {
614 if (Kind != k_Immediate)
616 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
617 // If it's not a constant expression, it'll generate a fixup and be
619 if (!CE) return true;
620 int64_t Value = CE->getValue();
621 return Value >= 0 && Value < 65536;
623 bool isImm24bit() const {
624 if (Kind != k_Immediate)
626 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
627 if (!CE) return false;
628 int64_t Value = CE->getValue();
629 return Value >= 0 && Value <= 0xffffff;
631 bool isImmThumbSR() const {
632 if (Kind != k_Immediate)
634 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
635 if (!CE) return false;
636 int64_t Value = CE->getValue();
637 return Value > 0 && Value < 33;
639 bool isPKHLSLImm() const {
640 if (Kind != k_Immediate)
642 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
643 if (!CE) return false;
644 int64_t Value = CE->getValue();
645 return Value >= 0 && Value < 32;
647 bool isPKHASRImm() const {
648 if (Kind != k_Immediate)
650 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
651 if (!CE) return false;
652 int64_t Value = CE->getValue();
653 return Value > 0 && Value <= 32;
655 bool isARMSOImm() const {
656 if (Kind != k_Immediate)
658 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
659 if (!CE) return false;
660 int64_t Value = CE->getValue();
661 return ARM_AM::getSOImmVal(Value) != -1;
663 bool isARMSOImmNot() const {
664 if (Kind != k_Immediate)
666 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
667 if (!CE) return false;
668 int64_t Value = CE->getValue();
669 return ARM_AM::getSOImmVal(~Value) != -1;
671 bool isT2SOImm() const {
672 if (Kind != k_Immediate)
674 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
675 if (!CE) return false;
676 int64_t Value = CE->getValue();
677 return ARM_AM::getT2SOImmVal(Value) != -1;
679 bool isT2SOImmNot() const {
680 if (Kind != k_Immediate)
682 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
683 if (!CE) return false;
684 int64_t Value = CE->getValue();
685 return ARM_AM::getT2SOImmVal(~Value) != -1;
687 bool isSetEndImm() const {
688 if (Kind != k_Immediate)
690 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
691 if (!CE) return false;
692 int64_t Value = CE->getValue();
693 return Value == 1 || Value == 0;
695 bool isReg() const { return Kind == k_Register; }
696 bool isRegList() const { return Kind == k_RegisterList; }
697 bool isDPRRegList() const { return Kind == k_DPRRegisterList; }
698 bool isSPRRegList() const { return Kind == k_SPRRegisterList; }
699 bool isToken() const { return Kind == k_Token; }
700 bool isMemBarrierOpt() const { return Kind == k_MemBarrierOpt; }
701 bool isMemory() const { return Kind == k_Memory; }
702 bool isShifterImm() const { return Kind == k_ShifterImmediate; }
703 bool isRegShiftedReg() const { return Kind == k_ShiftedRegister; }
704 bool isRegShiftedImm() const { return Kind == k_ShiftedImmediate; }
705 bool isRotImm() const { return Kind == k_RotateImmediate; }
706 bool isBitfield() const { return Kind == k_BitfieldDescriptor; }
707 bool isPostIdxRegShifted() const { return Kind == k_PostIndexRegister; }
708 bool isPostIdxReg() const {
709 return Kind == k_PostIndexRegister && PostIdxReg.ShiftTy == ARM_AM::no_shift;
711 bool isMemNoOffset(bool alignOK = false) const {
714 // No offset of any kind.
715 return Memory.OffsetRegNum == 0 && Memory.OffsetImm == 0 &&
716 (alignOK || Memory.Alignment == 0);
718 bool isAlignedMemory() const {
719 return isMemNoOffset(true);
721 bool isAddrMode2() const {
722 if (!isMemory() || Memory.Alignment != 0) return false;
723 // Check for register offset.
724 if (Memory.OffsetRegNum) return true;
725 // Immediate offset in range [-4095, 4095].
726 if (!Memory.OffsetImm) return true;
727 int64_t Val = Memory.OffsetImm->getValue();
728 return Val > -4096 && Val < 4096;
730 bool isAM2OffsetImm() const {
731 if (Kind != k_Immediate)
733 // Immediate offset in range [-4095, 4095].
734 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
735 if (!CE) return false;
736 int64_t Val = CE->getValue();
737 return Val > -4096 && Val < 4096;
739 bool isAddrMode3() const {
740 if (!isMemory() || Memory.Alignment != 0) return false;
741 // No shifts are legal for AM3.
742 if (Memory.ShiftType != ARM_AM::no_shift) return false;
743 // Check for register offset.
744 if (Memory.OffsetRegNum) return true;
745 // Immediate offset in range [-255, 255].
746 if (!Memory.OffsetImm) return true;
747 int64_t Val = Memory.OffsetImm->getValue();
748 return Val > -256 && Val < 256;
750 bool isAM3Offset() const {
751 if (Kind != k_Immediate && Kind != k_PostIndexRegister)
753 if (Kind == k_PostIndexRegister)
754 return PostIdxReg.ShiftTy == ARM_AM::no_shift;
755 // Immediate offset in range [-255, 255].
756 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
757 if (!CE) return false;
758 int64_t Val = CE->getValue();
759 // Special case, #-0 is INT32_MIN.
760 return (Val > -256 && Val < 256) || Val == INT32_MIN;
762 bool isAddrMode5() const {
763 // If we have an immediate that's not a constant, treat it as a label
764 // reference needing a fixup. If it is a constant, it's something else
766 if (Kind == k_Immediate && !isa<MCConstantExpr>(getImm()))
768 if (!isMemory() || Memory.Alignment != 0) return false;
769 // Check for register offset.
770 if (Memory.OffsetRegNum) return false;
771 // Immediate offset in range [-1020, 1020] and a multiple of 4.
772 if (!Memory.OffsetImm) return true;
773 int64_t Val = Memory.OffsetImm->getValue();
774 return (Val >= -1020 && Val <= 1020 && ((Val & 3) == 0)) ||
777 bool isMemTBB() const {
778 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
779 Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0)
783 bool isMemTBH() const {
784 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
785 Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm != 1 ||
786 Memory.Alignment != 0 )
790 bool isMemRegOffset() const {
791 if (!isMemory() || !Memory.OffsetRegNum || Memory.Alignment != 0)
795 bool isT2MemRegOffset() const {
796 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
797 Memory.Alignment != 0)
799 // Only lsl #{0, 1, 2, 3} allowed.
800 if (Memory.ShiftType == ARM_AM::no_shift)
802 if (Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm > 3)
806 bool isMemThumbRR() const {
807 // Thumb reg+reg addressing is simple. Just two registers, a base and
808 // an offset. No shifts, negations or any other complicating factors.
809 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
810 Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0)
812 return isARMLowRegister(Memory.BaseRegNum) &&
813 (!Memory.OffsetRegNum || isARMLowRegister(Memory.OffsetRegNum));
815 bool isMemThumbRIs4() const {
816 if (!isMemory() || Memory.OffsetRegNum != 0 ||
817 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
819 // Immediate offset, multiple of 4 in range [0, 124].
820 if (!Memory.OffsetImm) return true;
821 int64_t Val = Memory.OffsetImm->getValue();
822 return Val >= 0 && Val <= 124 && (Val % 4) == 0;
824 bool isMemThumbRIs2() const {
825 if (!isMemory() || Memory.OffsetRegNum != 0 ||
826 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
828 // Immediate offset, multiple of 4 in range [0, 62].
829 if (!Memory.OffsetImm) return true;
830 int64_t Val = Memory.OffsetImm->getValue();
831 return Val >= 0 && Val <= 62 && (Val % 2) == 0;
833 bool isMemThumbRIs1() const {
834 if (!isMemory() || Memory.OffsetRegNum != 0 ||
835 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
837 // Immediate offset in range [0, 31].
838 if (!Memory.OffsetImm) return true;
839 int64_t Val = Memory.OffsetImm->getValue();
840 return Val >= 0 && Val <= 31;
842 bool isMemThumbSPI() const {
843 if (!isMemory() || Memory.OffsetRegNum != 0 ||
844 Memory.BaseRegNum != ARM::SP || Memory.Alignment != 0)
846 // Immediate offset, multiple of 4 in range [0, 1020].
847 if (!Memory.OffsetImm) return true;
848 int64_t Val = Memory.OffsetImm->getValue();
849 return Val >= 0 && Val <= 1020 && (Val % 4) == 0;
851 bool isMemImm8s4Offset() const {
852 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
854 // Immediate offset a multiple of 4 in range [-1020, 1020].
855 if (!Memory.OffsetImm) return true;
856 int64_t Val = Memory.OffsetImm->getValue();
857 return Val >= -1020 && Val <= 1020 && (Val & 3) == 0;
859 bool isMemImm0_1020s4Offset() const {
860 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
862 // Immediate offset a multiple of 4 in range [0, 1020].
863 if (!Memory.OffsetImm) return true;
864 int64_t Val = Memory.OffsetImm->getValue();
865 return Val >= 0 && Val <= 1020 && (Val & 3) == 0;
867 bool isMemImm8Offset() const {
868 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
870 // Immediate offset in range [-255, 255].
871 if (!Memory.OffsetImm) return true;
872 int64_t Val = Memory.OffsetImm->getValue();
873 return (Val == INT32_MIN) || (Val > -256 && Val < 256);
875 bool isMemPosImm8Offset() const {
876 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
878 // Immediate offset in range [0, 255].
879 if (!Memory.OffsetImm) return true;
880 int64_t Val = Memory.OffsetImm->getValue();
881 return Val >= 0 && Val < 256;
883 bool isMemNegImm8Offset() const {
884 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
886 // Immediate offset in range [-255, -1].
887 if (!Memory.OffsetImm) return true;
888 int64_t Val = Memory.OffsetImm->getValue();
889 return Val > -256 && Val < 0;
891 bool isMemUImm12Offset() const {
892 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
894 // Immediate offset in range [0, 4095].
895 if (!Memory.OffsetImm) return true;
896 int64_t Val = Memory.OffsetImm->getValue();
897 return (Val >= 0 && Val < 4096);
899 bool isMemImm12Offset() const {
900 // If we have an immediate that's not a constant, treat it as a label
901 // reference needing a fixup. If it is a constant, it's something else
903 if (Kind == k_Immediate && !isa<MCConstantExpr>(getImm()))
906 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
908 // Immediate offset in range [-4095, 4095].
909 if (!Memory.OffsetImm) return true;
910 int64_t Val = Memory.OffsetImm->getValue();
911 return (Val > -4096 && Val < 4096) || (Val == INT32_MIN);
913 bool isPostIdxImm8() const {
914 if (Kind != k_Immediate)
916 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
917 if (!CE) return false;
918 int64_t Val = CE->getValue();
919 return (Val > -256 && Val < 256) || (Val == INT32_MIN);
921 bool isPostIdxImm8s4() const {
922 if (Kind != k_Immediate)
924 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
925 if (!CE) return false;
926 int64_t Val = CE->getValue();
927 return ((Val & 3) == 0 && Val >= -1020 && Val <= 1020) ||
931 bool isMSRMask() const { return Kind == k_MSRMask; }
932 bool isProcIFlags() const { return Kind == k_ProcIFlags; }
935 bool isVecListOneD() const {
936 if (Kind != k_VectorList) return false;
937 return VectorList.Count == 1;
940 bool isVecListTwoD() const {
941 if (Kind != k_VectorList) return false;
942 return VectorList.Count == 2;
945 bool isVecListThreeD() const {
946 if (Kind != k_VectorList) return false;
947 return VectorList.Count == 3;
950 bool isVecListFourD() const {
951 if (Kind != k_VectorList) return false;
952 return VectorList.Count == 4;
955 bool isVecListTwoQ() const {
956 if (Kind != k_VectorList) return false;
957 //FIXME: We haven't taught the parser to handle by-two register lists
958 // yet, so don't pretend to know one.
959 return VectorList.Count == 2 && false;
962 bool isVectorIndex8() const {
963 if (Kind != k_VectorIndex) return false;
964 return VectorIndex.Val < 8;
966 bool isVectorIndex16() const {
967 if (Kind != k_VectorIndex) return false;
968 return VectorIndex.Val < 4;
970 bool isVectorIndex32() const {
971 if (Kind != k_VectorIndex) return false;
972 return VectorIndex.Val < 2;
975 bool isNEONi8splat() const {
976 if (Kind != k_Immediate)
978 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
979 // Must be a constant.
980 if (!CE) return false;
981 int64_t Value = CE->getValue();
982 // i8 value splatted across 8 bytes. The immediate is just the 8 byte
984 return Value >= 0 && Value < 256;
987 bool isNEONi16splat() const {
988 if (Kind != k_Immediate)
990 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
991 // Must be a constant.
992 if (!CE) return false;
993 int64_t Value = CE->getValue();
994 // i16 value in the range [0,255] or [0x0100, 0xff00]
995 return (Value >= 0 && Value < 256) || (Value >= 0x0100 && Value <= 0xff00);
998 bool isNEONi32splat() const {
999 if (Kind != k_Immediate)
1001 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1002 // Must be a constant.
1003 if (!CE) return false;
1004 int64_t Value = CE->getValue();
1005 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X.
1006 return (Value >= 0 && Value < 256) ||
1007 (Value >= 0x0100 && Value <= 0xff00) ||
1008 (Value >= 0x010000 && Value <= 0xff0000) ||
1009 (Value >= 0x01000000 && Value <= 0xff000000);
1012 bool isNEONi32vmov() const {
1013 if (Kind != k_Immediate)
1015 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1016 // Must be a constant.
1017 if (!CE) return false;
1018 int64_t Value = CE->getValue();
1019 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X,
1020 // for VMOV/VMVN only, 00Xf or 0Xff are also accepted.
1021 return (Value >= 0 && Value < 256) ||
1022 (Value >= 0x0100 && Value <= 0xff00) ||
1023 (Value >= 0x010000 && Value <= 0xff0000) ||
1024 (Value >= 0x01000000 && Value <= 0xff000000) ||
1025 (Value >= 0x01ff && Value <= 0xffff && (Value & 0xff) == 0xff) ||
1026 (Value >= 0x01ffff && Value <= 0xffffff && (Value & 0xffff) == 0xffff);
1029 bool isNEONi64splat() const {
1030 if (Kind != k_Immediate)
1032 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1033 // Must be a constant.
1034 if (!CE) return false;
1035 uint64_t Value = CE->getValue();
1036 // i64 value with each byte being either 0 or 0xff.
1037 for (unsigned i = 0; i < 8; ++i)
1038 if ((Value & 0xff) != 0 && (Value & 0xff) != 0xff) return false;
1042 void addExpr(MCInst &Inst, const MCExpr *Expr) const {
1043 // Add as immediates when possible. Null MCExpr = 0.
1045 Inst.addOperand(MCOperand::CreateImm(0));
1046 else if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr))
1047 Inst.addOperand(MCOperand::CreateImm(CE->getValue()));
1049 Inst.addOperand(MCOperand::CreateExpr(Expr));
1052 void addCondCodeOperands(MCInst &Inst, unsigned N) const {
1053 assert(N == 2 && "Invalid number of operands!");
1054 Inst.addOperand(MCOperand::CreateImm(unsigned(getCondCode())));
1055 unsigned RegNum = getCondCode() == ARMCC::AL ? 0: ARM::CPSR;
1056 Inst.addOperand(MCOperand::CreateReg(RegNum));
1059 void addCoprocNumOperands(MCInst &Inst, unsigned N) const {
1060 assert(N == 1 && "Invalid number of operands!");
1061 Inst.addOperand(MCOperand::CreateImm(getCoproc()));
1064 void addCoprocRegOperands(MCInst &Inst, unsigned N) const {
1065 assert(N == 1 && "Invalid number of operands!");
1066 Inst.addOperand(MCOperand::CreateImm(getCoproc()));
1069 void addCoprocOptionOperands(MCInst &Inst, unsigned N) const {
1070 assert(N == 1 && "Invalid number of operands!");
1071 Inst.addOperand(MCOperand::CreateImm(CoprocOption.Val));
1074 void addITMaskOperands(MCInst &Inst, unsigned N) const {
1075 assert(N == 1 && "Invalid number of operands!");
1076 Inst.addOperand(MCOperand::CreateImm(ITMask.Mask));
1079 void addITCondCodeOperands(MCInst &Inst, unsigned N) const {
1080 assert(N == 1 && "Invalid number of operands!");
1081 Inst.addOperand(MCOperand::CreateImm(unsigned(getCondCode())));
1084 void addCCOutOperands(MCInst &Inst, unsigned N) const {
1085 assert(N == 1 && "Invalid number of operands!");
1086 Inst.addOperand(MCOperand::CreateReg(getReg()));
1089 void addRegOperands(MCInst &Inst, unsigned N) const {
1090 assert(N == 1 && "Invalid number of operands!");
1091 Inst.addOperand(MCOperand::CreateReg(getReg()));
1094 void addRegShiftedRegOperands(MCInst &Inst, unsigned N) const {
1095 assert(N == 3 && "Invalid number of operands!");
1096 assert(isRegShiftedReg() && "addRegShiftedRegOperands() on non RegShiftedReg!");
1097 Inst.addOperand(MCOperand::CreateReg(RegShiftedReg.SrcReg));
1098 Inst.addOperand(MCOperand::CreateReg(RegShiftedReg.ShiftReg));
1099 Inst.addOperand(MCOperand::CreateImm(
1100 ARM_AM::getSORegOpc(RegShiftedReg.ShiftTy, RegShiftedReg.ShiftImm)));
1103 void addRegShiftedImmOperands(MCInst &Inst, unsigned N) const {
1104 assert(N == 2 && "Invalid number of operands!");
1105 assert(isRegShiftedImm() && "addRegShiftedImmOperands() on non RegShiftedImm!");
1106 Inst.addOperand(MCOperand::CreateReg(RegShiftedImm.SrcReg));
1107 Inst.addOperand(MCOperand::CreateImm(
1108 ARM_AM::getSORegOpc(RegShiftedImm.ShiftTy, RegShiftedImm.ShiftImm)));
1111 void addShifterImmOperands(MCInst &Inst, unsigned N) const {
1112 assert(N == 1 && "Invalid number of operands!");
1113 Inst.addOperand(MCOperand::CreateImm((ShifterImm.isASR << 5) |
1117 void addRegListOperands(MCInst &Inst, unsigned N) const {
1118 assert(N == 1 && "Invalid number of operands!");
1119 const SmallVectorImpl<unsigned> &RegList = getRegList();
1120 for (SmallVectorImpl<unsigned>::const_iterator
1121 I = RegList.begin(), E = RegList.end(); I != E; ++I)
1122 Inst.addOperand(MCOperand::CreateReg(*I));
1125 void addDPRRegListOperands(MCInst &Inst, unsigned N) const {
1126 addRegListOperands(Inst, N);
1129 void addSPRRegListOperands(MCInst &Inst, unsigned N) const {
1130 addRegListOperands(Inst, N);
1133 void addRotImmOperands(MCInst &Inst, unsigned N) const {
1134 assert(N == 1 && "Invalid number of operands!");
1135 // Encoded as val>>3. The printer handles display as 8, 16, 24.
1136 Inst.addOperand(MCOperand::CreateImm(RotImm.Imm >> 3));
1139 void addBitfieldOperands(MCInst &Inst, unsigned N) const {
1140 assert(N == 1 && "Invalid number of operands!");
1141 // Munge the lsb/width into a bitfield mask.
1142 unsigned lsb = Bitfield.LSB;
1143 unsigned width = Bitfield.Width;
1144 // Make a 32-bit mask w/ the referenced bits clear and all other bits set.
1145 uint32_t Mask = ~(((uint32_t)0xffffffff >> lsb) << (32 - width) >>
1146 (32 - (lsb + width)));
1147 Inst.addOperand(MCOperand::CreateImm(Mask));
1150 void addImmOperands(MCInst &Inst, unsigned N) const {
1151 assert(N == 1 && "Invalid number of operands!");
1152 addExpr(Inst, getImm());
1155 void addFPImmOperands(MCInst &Inst, unsigned N) const {
1156 assert(N == 1 && "Invalid number of operands!");
1157 Inst.addOperand(MCOperand::CreateImm(getFPImm()));
1160 void addImm8s4Operands(MCInst &Inst, unsigned N) const {
1161 assert(N == 1 && "Invalid number of operands!");
1162 // FIXME: We really want to scale the value here, but the LDRD/STRD
1163 // instruction don't encode operands that way yet.
1164 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1165 Inst.addOperand(MCOperand::CreateImm(CE->getValue()));
1168 void addImm0_1020s4Operands(MCInst &Inst, unsigned N) const {
1169 assert(N == 1 && "Invalid number of operands!");
1170 // The immediate is scaled by four in the encoding and is stored
1171 // in the MCInst as such. Lop off the low two bits here.
1172 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1173 Inst.addOperand(MCOperand::CreateImm(CE->getValue() / 4));
1176 void addImm0_508s4Operands(MCInst &Inst, unsigned N) const {
1177 assert(N == 1 && "Invalid number of operands!");
1178 // The immediate is scaled by four in the encoding and is stored
1179 // in the MCInst as such. Lop off the low two bits here.
1180 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1181 Inst.addOperand(MCOperand::CreateImm(CE->getValue() / 4));
1184 void addImm0_255Operands(MCInst &Inst, unsigned N) const {
1185 assert(N == 1 && "Invalid number of operands!");
1186 addExpr(Inst, getImm());
1189 void addImm0_7Operands(MCInst &Inst, unsigned N) const {
1190 assert(N == 1 && "Invalid number of operands!");
1191 addExpr(Inst, getImm());
1194 void addImm0_15Operands(MCInst &Inst, unsigned N) const {
1195 assert(N == 1 && "Invalid number of operands!");
1196 addExpr(Inst, getImm());
1199 void addImm0_31Operands(MCInst &Inst, unsigned N) const {
1200 assert(N == 1 && "Invalid number of operands!");
1201 addExpr(Inst, getImm());
1204 void addImm1_16Operands(MCInst &Inst, unsigned N) const {
1205 assert(N == 1 && "Invalid number of operands!");
1206 // The constant encodes as the immediate-1, and we store in the instruction
1207 // the bits as encoded, so subtract off one here.
1208 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1209 Inst.addOperand(MCOperand::CreateImm(CE->getValue() - 1));
1212 void addImm1_32Operands(MCInst &Inst, unsigned N) const {
1213 assert(N == 1 && "Invalid number of operands!");
1214 // The constant encodes as the immediate-1, and we store in the instruction
1215 // the bits as encoded, so subtract off one here.
1216 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1217 Inst.addOperand(MCOperand::CreateImm(CE->getValue() - 1));
1220 void addImm0_65535Operands(MCInst &Inst, unsigned N) const {
1221 assert(N == 1 && "Invalid number of operands!");
1222 addExpr(Inst, getImm());
1225 void addImm0_65535ExprOperands(MCInst &Inst, unsigned N) const {
1226 assert(N == 1 && "Invalid number of operands!");
1227 addExpr(Inst, getImm());
1230 void addImm24bitOperands(MCInst &Inst, unsigned N) const {
1231 assert(N == 1 && "Invalid number of operands!");
1232 addExpr(Inst, getImm());
1235 void addImmThumbSROperands(MCInst &Inst, unsigned N) const {
1236 assert(N == 1 && "Invalid number of operands!");
1237 // The constant encodes as the immediate, except for 32, which encodes as
1239 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1240 unsigned Imm = CE->getValue();
1241 Inst.addOperand(MCOperand::CreateImm((Imm == 32 ? 0 : Imm)));
1244 void addPKHLSLImmOperands(MCInst &Inst, unsigned N) const {
1245 assert(N == 1 && "Invalid number of operands!");
1246 addExpr(Inst, getImm());
1249 void addPKHASRImmOperands(MCInst &Inst, unsigned N) const {
1250 assert(N == 1 && "Invalid number of operands!");
1251 // An ASR value of 32 encodes as 0, so that's how we want to add it to
1252 // the instruction as well.
1253 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1254 int Val = CE->getValue();
1255 Inst.addOperand(MCOperand::CreateImm(Val == 32 ? 0 : Val));
1258 void addARMSOImmOperands(MCInst &Inst, unsigned N) const {
1259 assert(N == 1 && "Invalid number of operands!");
1260 addExpr(Inst, getImm());
1263 void addT2SOImmOperands(MCInst &Inst, unsigned N) const {
1264 assert(N == 1 && "Invalid number of operands!");
1265 addExpr(Inst, getImm());
1268 void addT2SOImmNotOperands(MCInst &Inst, unsigned N) const {
1269 assert(N == 1 && "Invalid number of operands!");
1270 // The operand is actually a t2_so_imm, but we have its bitwise
1271 // negation in the assembly source, so twiddle it here.
1272 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1273 Inst.addOperand(MCOperand::CreateImm(~CE->getValue()));
1276 void addARMSOImmNotOperands(MCInst &Inst, unsigned N) const {
1277 assert(N == 1 && "Invalid number of operands!");
1278 // The operand is actually a so_imm, but we have its bitwise
1279 // negation in the assembly source, so twiddle it here.
1280 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1281 Inst.addOperand(MCOperand::CreateImm(~CE->getValue()));
1284 void addSetEndImmOperands(MCInst &Inst, unsigned N) const {
1285 assert(N == 1 && "Invalid number of operands!");
1286 addExpr(Inst, getImm());
1289 void addMemBarrierOptOperands(MCInst &Inst, unsigned N) const {
1290 assert(N == 1 && "Invalid number of operands!");
1291 Inst.addOperand(MCOperand::CreateImm(unsigned(getMemBarrierOpt())));
1294 void addMemNoOffsetOperands(MCInst &Inst, unsigned N) const {
1295 assert(N == 1 && "Invalid number of operands!");
1296 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1299 void addAlignedMemoryOperands(MCInst &Inst, unsigned N) const {
1300 assert(N == 2 && "Invalid number of operands!");
1301 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1302 Inst.addOperand(MCOperand::CreateImm(Memory.Alignment));
1305 void addAddrMode2Operands(MCInst &Inst, unsigned N) const {
1306 assert(N == 3 && "Invalid number of operands!");
1307 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1308 if (!Memory.OffsetRegNum) {
1309 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1310 // Special case for #-0
1311 if (Val == INT32_MIN) Val = 0;
1312 if (Val < 0) Val = -Val;
1313 Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift);
1315 // For register offset, we encode the shift type and negation flag
1317 Val = ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add,
1318 Memory.ShiftImm, Memory.ShiftType);
1320 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1321 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1322 Inst.addOperand(MCOperand::CreateImm(Val));
1325 void addAM2OffsetImmOperands(MCInst &Inst, unsigned N) const {
1326 assert(N == 2 && "Invalid number of operands!");
1327 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1328 assert(CE && "non-constant AM2OffsetImm operand!");
1329 int32_t Val = CE->getValue();
1330 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1331 // Special case for #-0
1332 if (Val == INT32_MIN) Val = 0;
1333 if (Val < 0) Val = -Val;
1334 Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift);
1335 Inst.addOperand(MCOperand::CreateReg(0));
1336 Inst.addOperand(MCOperand::CreateImm(Val));
1339 void addAddrMode3Operands(MCInst &Inst, unsigned N) const {
1340 assert(N == 3 && "Invalid number of operands!");
1341 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1342 if (!Memory.OffsetRegNum) {
1343 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1344 // Special case for #-0
1345 if (Val == INT32_MIN) Val = 0;
1346 if (Val < 0) Val = -Val;
1347 Val = ARM_AM::getAM3Opc(AddSub, Val);
1349 // For register offset, we encode the shift type and negation flag
1351 Val = ARM_AM::getAM3Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add, 0);
1353 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1354 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1355 Inst.addOperand(MCOperand::CreateImm(Val));
1358 void addAM3OffsetOperands(MCInst &Inst, unsigned N) const {
1359 assert(N == 2 && "Invalid number of operands!");
1360 if (Kind == k_PostIndexRegister) {
1362 ARM_AM::getAM3Opc(PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub, 0);
1363 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
1364 Inst.addOperand(MCOperand::CreateImm(Val));
1369 const MCConstantExpr *CE = static_cast<const MCConstantExpr*>(getImm());
1370 int32_t Val = CE->getValue();
1371 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1372 // Special case for #-0
1373 if (Val == INT32_MIN) Val = 0;
1374 if (Val < 0) Val = -Val;
1375 Val = ARM_AM::getAM3Opc(AddSub, Val);
1376 Inst.addOperand(MCOperand::CreateReg(0));
1377 Inst.addOperand(MCOperand::CreateImm(Val));
1380 void addAddrMode5Operands(MCInst &Inst, unsigned N) const {
1381 assert(N == 2 && "Invalid number of operands!");
1382 // If we have an immediate that's not a constant, treat it as a label
1383 // reference needing a fixup. If it is a constant, it's something else
1384 // and we reject it.
1386 Inst.addOperand(MCOperand::CreateExpr(getImm()));
1387 Inst.addOperand(MCOperand::CreateImm(0));
1391 // The lower two bits are always zero and as such are not encoded.
1392 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0;
1393 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1394 // Special case for #-0
1395 if (Val == INT32_MIN) Val = 0;
1396 if (Val < 0) Val = -Val;
1397 Val = ARM_AM::getAM5Opc(AddSub, Val);
1398 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1399 Inst.addOperand(MCOperand::CreateImm(Val));
1402 void addMemImm8s4OffsetOperands(MCInst &Inst, unsigned N) const {
1403 assert(N == 2 && "Invalid number of operands!");
1404 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1405 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1406 Inst.addOperand(MCOperand::CreateImm(Val));
1409 void addMemImm0_1020s4OffsetOperands(MCInst &Inst, unsigned N) const {
1410 assert(N == 2 && "Invalid number of operands!");
1411 // The lower two bits are always zero and as such are not encoded.
1412 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0;
1413 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1414 Inst.addOperand(MCOperand::CreateImm(Val));
1417 void addMemImm8OffsetOperands(MCInst &Inst, unsigned N) const {
1418 assert(N == 2 && "Invalid number of operands!");
1419 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1420 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1421 Inst.addOperand(MCOperand::CreateImm(Val));
1424 void addMemPosImm8OffsetOperands(MCInst &Inst, unsigned N) const {
1425 addMemImm8OffsetOperands(Inst, N);
1428 void addMemNegImm8OffsetOperands(MCInst &Inst, unsigned N) const {
1429 addMemImm8OffsetOperands(Inst, N);
1432 void addMemUImm12OffsetOperands(MCInst &Inst, unsigned N) const {
1433 assert(N == 2 && "Invalid number of operands!");
1434 // If this is an immediate, it's a label reference.
1435 if (Kind == k_Immediate) {
1436 addExpr(Inst, getImm());
1437 Inst.addOperand(MCOperand::CreateImm(0));
1441 // Otherwise, it's a normal memory reg+offset.
1442 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1443 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1444 Inst.addOperand(MCOperand::CreateImm(Val));
1447 void addMemImm12OffsetOperands(MCInst &Inst, unsigned N) const {
1448 assert(N == 2 && "Invalid number of operands!");
1449 // If this is an immediate, it's a label reference.
1450 if (Kind == k_Immediate) {
1451 addExpr(Inst, getImm());
1452 Inst.addOperand(MCOperand::CreateImm(0));
1456 // Otherwise, it's a normal memory reg+offset.
1457 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1458 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1459 Inst.addOperand(MCOperand::CreateImm(Val));
1462 void addMemTBBOperands(MCInst &Inst, unsigned N) const {
1463 assert(N == 2 && "Invalid number of operands!");
1464 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1465 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1468 void addMemTBHOperands(MCInst &Inst, unsigned N) const {
1469 assert(N == 2 && "Invalid number of operands!");
1470 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1471 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1474 void addMemRegOffsetOperands(MCInst &Inst, unsigned N) const {
1475 assert(N == 3 && "Invalid number of operands!");
1476 unsigned Val = ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add,
1477 Memory.ShiftImm, Memory.ShiftType);
1478 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1479 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1480 Inst.addOperand(MCOperand::CreateImm(Val));
1483 void addT2MemRegOffsetOperands(MCInst &Inst, unsigned N) const {
1484 assert(N == 3 && "Invalid number of operands!");
1485 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1486 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1487 Inst.addOperand(MCOperand::CreateImm(Memory.ShiftImm));
1490 void addMemThumbRROperands(MCInst &Inst, unsigned N) const {
1491 assert(N == 2 && "Invalid number of operands!");
1492 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1493 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1496 void addMemThumbRIs4Operands(MCInst &Inst, unsigned N) const {
1497 assert(N == 2 && "Invalid number of operands!");
1498 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0;
1499 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1500 Inst.addOperand(MCOperand::CreateImm(Val));
1503 void addMemThumbRIs2Operands(MCInst &Inst, unsigned N) const {
1504 assert(N == 2 && "Invalid number of operands!");
1505 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 2) : 0;
1506 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1507 Inst.addOperand(MCOperand::CreateImm(Val));
1510 void addMemThumbRIs1Operands(MCInst &Inst, unsigned N) const {
1511 assert(N == 2 && "Invalid number of operands!");
1512 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue()) : 0;
1513 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1514 Inst.addOperand(MCOperand::CreateImm(Val));
1517 void addMemThumbSPIOperands(MCInst &Inst, unsigned N) const {
1518 assert(N == 2 && "Invalid number of operands!");
1519 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0;
1520 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1521 Inst.addOperand(MCOperand::CreateImm(Val));
1524 void addPostIdxImm8Operands(MCInst &Inst, unsigned N) const {
1525 assert(N == 1 && "Invalid number of operands!");
1526 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1527 assert(CE && "non-constant post-idx-imm8 operand!");
1528 int Imm = CE->getValue();
1529 bool isAdd = Imm >= 0;
1530 if (Imm == INT32_MIN) Imm = 0;
1531 Imm = (Imm < 0 ? -Imm : Imm) | (int)isAdd << 8;
1532 Inst.addOperand(MCOperand::CreateImm(Imm));
1535 void addPostIdxImm8s4Operands(MCInst &Inst, unsigned N) const {
1536 assert(N == 1 && "Invalid number of operands!");
1537 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1538 assert(CE && "non-constant post-idx-imm8s4 operand!");
1539 int Imm = CE->getValue();
1540 bool isAdd = Imm >= 0;
1541 if (Imm == INT32_MIN) Imm = 0;
1542 // Immediate is scaled by 4.
1543 Imm = ((Imm < 0 ? -Imm : Imm) / 4) | (int)isAdd << 8;
1544 Inst.addOperand(MCOperand::CreateImm(Imm));
1547 void addPostIdxRegOperands(MCInst &Inst, unsigned N) const {
1548 assert(N == 2 && "Invalid number of operands!");
1549 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
1550 Inst.addOperand(MCOperand::CreateImm(PostIdxReg.isAdd));
1553 void addPostIdxRegShiftedOperands(MCInst &Inst, unsigned N) const {
1554 assert(N == 2 && "Invalid number of operands!");
1555 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
1556 // The sign, shift type, and shift amount are encoded in a single operand
1557 // using the AM2 encoding helpers.
1558 ARM_AM::AddrOpc opc = PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub;
1559 unsigned Imm = ARM_AM::getAM2Opc(opc, PostIdxReg.ShiftImm,
1560 PostIdxReg.ShiftTy);
1561 Inst.addOperand(MCOperand::CreateImm(Imm));
1564 void addMSRMaskOperands(MCInst &Inst, unsigned N) const {
1565 assert(N == 1 && "Invalid number of operands!");
1566 Inst.addOperand(MCOperand::CreateImm(unsigned(getMSRMask())));
1569 void addProcIFlagsOperands(MCInst &Inst, unsigned N) const {
1570 assert(N == 1 && "Invalid number of operands!");
1571 Inst.addOperand(MCOperand::CreateImm(unsigned(getProcIFlags())));
1574 void addVecListOneDOperands(MCInst &Inst, unsigned N) const {
1575 assert(N == 1 && "Invalid number of operands!");
1576 Inst.addOperand(MCOperand::CreateReg(VectorList.RegNum));
1579 void addVecListTwoDOperands(MCInst &Inst, unsigned N) const {
1580 assert(N == 1 && "Invalid number of operands!");
1581 // Only the first register actually goes on the instruction. The rest
1582 // are implied by the opcode.
1583 Inst.addOperand(MCOperand::CreateReg(VectorList.RegNum));
1586 void addVecListThreeDOperands(MCInst &Inst, unsigned N) const {
1587 assert(N == 1 && "Invalid number of operands!");
1588 // Only the first register actually goes on the instruction. The rest
1589 // are implied by the opcode.
1590 Inst.addOperand(MCOperand::CreateReg(VectorList.RegNum));
1593 void addVecListFourDOperands(MCInst &Inst, unsigned N) const {
1594 assert(N == 1 && "Invalid number of operands!");
1595 // Only the first register actually goes on the instruction. The rest
1596 // are implied by the opcode.
1597 Inst.addOperand(MCOperand::CreateReg(VectorList.RegNum));
1600 void addVecListTwoQOperands(MCInst &Inst, unsigned N) const {
1601 assert(N == 1 && "Invalid number of operands!");
1602 // Only the first register actually goes on the instruction. The rest
1603 // are implied by the opcode.
1604 Inst.addOperand(MCOperand::CreateReg(VectorList.RegNum));
1607 void addVectorIndex8Operands(MCInst &Inst, unsigned N) const {
1608 assert(N == 1 && "Invalid number of operands!");
1609 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
1612 void addVectorIndex16Operands(MCInst &Inst, unsigned N) const {
1613 assert(N == 1 && "Invalid number of operands!");
1614 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
1617 void addVectorIndex32Operands(MCInst &Inst, unsigned N) const {
1618 assert(N == 1 && "Invalid number of operands!");
1619 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
1622 void addNEONi8splatOperands(MCInst &Inst, unsigned N) const {
1623 assert(N == 1 && "Invalid number of operands!");
1624 // The immediate encodes the type of constant as well as the value.
1625 // Mask in that this is an i8 splat.
1626 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1627 Inst.addOperand(MCOperand::CreateImm(CE->getValue() | 0xe00));
1630 void addNEONi16splatOperands(MCInst &Inst, unsigned N) const {
1631 assert(N == 1 && "Invalid number of operands!");
1632 // The immediate encodes the type of constant as well as the value.
1633 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1634 unsigned Value = CE->getValue();
1636 Value = (Value >> 8) | 0xa00;
1639 Inst.addOperand(MCOperand::CreateImm(Value));
1642 void addNEONi32splatOperands(MCInst &Inst, unsigned N) const {
1643 assert(N == 1 && "Invalid number of operands!");
1644 // The immediate encodes the type of constant as well as the value.
1645 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1646 unsigned Value = CE->getValue();
1647 if (Value >= 256 && Value <= 0xff00)
1648 Value = (Value >> 8) | 0x200;
1649 else if (Value > 0xffff && Value <= 0xff0000)
1650 Value = (Value >> 16) | 0x400;
1651 else if (Value > 0xffffff)
1652 Value = (Value >> 24) | 0x600;
1653 Inst.addOperand(MCOperand::CreateImm(Value));
1656 void addNEONi32vmovOperands(MCInst &Inst, unsigned N) const {
1657 assert(N == 1 && "Invalid number of operands!");
1658 // The immediate encodes the type of constant as well as the value.
1659 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1660 unsigned Value = CE->getValue();
1661 if (Value >= 256 && Value <= 0xffff)
1662 Value = (Value >> 8) | ((Value & 0xff) ? 0xc00 : 0x200);
1663 else if (Value > 0xffff && Value <= 0xffffff)
1664 Value = (Value >> 16) | ((Value & 0xff) ? 0xd00 : 0x400);
1665 else if (Value > 0xffffff)
1666 Value = (Value >> 24) | 0x600;
1667 Inst.addOperand(MCOperand::CreateImm(Value));
1670 void addNEONi64splatOperands(MCInst &Inst, unsigned N) const {
1671 assert(N == 1 && "Invalid number of operands!");
1672 // The immediate encodes the type of constant as well as the value.
1673 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1674 uint64_t Value = CE->getValue();
1676 for (unsigned i = 0; i < 8; ++i, Value >>= 8) {
1677 Imm |= (Value & 1) << i;
1679 Inst.addOperand(MCOperand::CreateImm(Imm | 0x1e00));
1682 virtual void print(raw_ostream &OS) const;
1684 static ARMOperand *CreateITMask(unsigned Mask, SMLoc S) {
1685 ARMOperand *Op = new ARMOperand(k_ITCondMask);
1686 Op->ITMask.Mask = Mask;
1692 static ARMOperand *CreateCondCode(ARMCC::CondCodes CC, SMLoc S) {
1693 ARMOperand *Op = new ARMOperand(k_CondCode);
1700 static ARMOperand *CreateCoprocNum(unsigned CopVal, SMLoc S) {
1701 ARMOperand *Op = new ARMOperand(k_CoprocNum);
1702 Op->Cop.Val = CopVal;
1708 static ARMOperand *CreateCoprocReg(unsigned CopVal, SMLoc S) {
1709 ARMOperand *Op = new ARMOperand(k_CoprocReg);
1710 Op->Cop.Val = CopVal;
1716 static ARMOperand *CreateCoprocOption(unsigned Val, SMLoc S, SMLoc E) {
1717 ARMOperand *Op = new ARMOperand(k_CoprocOption);
1724 static ARMOperand *CreateCCOut(unsigned RegNum, SMLoc S) {
1725 ARMOperand *Op = new ARMOperand(k_CCOut);
1726 Op->Reg.RegNum = RegNum;
1732 static ARMOperand *CreateToken(StringRef Str, SMLoc S) {
1733 ARMOperand *Op = new ARMOperand(k_Token);
1734 Op->Tok.Data = Str.data();
1735 Op->Tok.Length = Str.size();
1741 static ARMOperand *CreateReg(unsigned RegNum, SMLoc S, SMLoc E) {
1742 ARMOperand *Op = new ARMOperand(k_Register);
1743 Op->Reg.RegNum = RegNum;
1749 static ARMOperand *CreateShiftedRegister(ARM_AM::ShiftOpc ShTy,
1754 ARMOperand *Op = new ARMOperand(k_ShiftedRegister);
1755 Op->RegShiftedReg.ShiftTy = ShTy;
1756 Op->RegShiftedReg.SrcReg = SrcReg;
1757 Op->RegShiftedReg.ShiftReg = ShiftReg;
1758 Op->RegShiftedReg.ShiftImm = ShiftImm;
1764 static ARMOperand *CreateShiftedImmediate(ARM_AM::ShiftOpc ShTy,
1768 ARMOperand *Op = new ARMOperand(k_ShiftedImmediate);
1769 Op->RegShiftedImm.ShiftTy = ShTy;
1770 Op->RegShiftedImm.SrcReg = SrcReg;
1771 Op->RegShiftedImm.ShiftImm = ShiftImm;
1777 static ARMOperand *CreateShifterImm(bool isASR, unsigned Imm,
1779 ARMOperand *Op = new ARMOperand(k_ShifterImmediate);
1780 Op->ShifterImm.isASR = isASR;
1781 Op->ShifterImm.Imm = Imm;
1787 static ARMOperand *CreateRotImm(unsigned Imm, SMLoc S, SMLoc E) {
1788 ARMOperand *Op = new ARMOperand(k_RotateImmediate);
1789 Op->RotImm.Imm = Imm;
1795 static ARMOperand *CreateBitfield(unsigned LSB, unsigned Width,
1797 ARMOperand *Op = new ARMOperand(k_BitfieldDescriptor);
1798 Op->Bitfield.LSB = LSB;
1799 Op->Bitfield.Width = Width;
1806 CreateRegList(const SmallVectorImpl<std::pair<unsigned, SMLoc> > &Regs,
1807 SMLoc StartLoc, SMLoc EndLoc) {
1808 KindTy Kind = k_RegisterList;
1810 if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Regs.front().first))
1811 Kind = k_DPRRegisterList;
1812 else if (ARMMCRegisterClasses[ARM::SPRRegClassID].
1813 contains(Regs.front().first))
1814 Kind = k_SPRRegisterList;
1816 ARMOperand *Op = new ARMOperand(Kind);
1817 for (SmallVectorImpl<std::pair<unsigned, SMLoc> >::const_iterator
1818 I = Regs.begin(), E = Regs.end(); I != E; ++I)
1819 Op->Registers.push_back(I->first);
1820 array_pod_sort(Op->Registers.begin(), Op->Registers.end());
1821 Op->StartLoc = StartLoc;
1822 Op->EndLoc = EndLoc;
1826 static ARMOperand *CreateVectorList(unsigned RegNum, unsigned Count,
1828 ARMOperand *Op = new ARMOperand(k_VectorList);
1829 Op->VectorList.RegNum = RegNum;
1830 Op->VectorList.Count = Count;
1836 static ARMOperand *CreateVectorIndex(unsigned Idx, SMLoc S, SMLoc E,
1838 ARMOperand *Op = new ARMOperand(k_VectorIndex);
1839 Op->VectorIndex.Val = Idx;
1845 static ARMOperand *CreateImm(const MCExpr *Val, SMLoc S, SMLoc E) {
1846 ARMOperand *Op = new ARMOperand(k_Immediate);
1853 static ARMOperand *CreateFPImm(unsigned Val, SMLoc S, MCContext &Ctx) {
1854 ARMOperand *Op = new ARMOperand(k_FPImmediate);
1855 Op->FPImm.Val = Val;
1861 static ARMOperand *CreateMem(unsigned BaseRegNum,
1862 const MCConstantExpr *OffsetImm,
1863 unsigned OffsetRegNum,
1864 ARM_AM::ShiftOpc ShiftType,
1869 ARMOperand *Op = new ARMOperand(k_Memory);
1870 Op->Memory.BaseRegNum = BaseRegNum;
1871 Op->Memory.OffsetImm = OffsetImm;
1872 Op->Memory.OffsetRegNum = OffsetRegNum;
1873 Op->Memory.ShiftType = ShiftType;
1874 Op->Memory.ShiftImm = ShiftImm;
1875 Op->Memory.Alignment = Alignment;
1876 Op->Memory.isNegative = isNegative;
1882 static ARMOperand *CreatePostIdxReg(unsigned RegNum, bool isAdd,
1883 ARM_AM::ShiftOpc ShiftTy,
1886 ARMOperand *Op = new ARMOperand(k_PostIndexRegister);
1887 Op->PostIdxReg.RegNum = RegNum;
1888 Op->PostIdxReg.isAdd = isAdd;
1889 Op->PostIdxReg.ShiftTy = ShiftTy;
1890 Op->PostIdxReg.ShiftImm = ShiftImm;
1896 static ARMOperand *CreateMemBarrierOpt(ARM_MB::MemBOpt Opt, SMLoc S) {
1897 ARMOperand *Op = new ARMOperand(k_MemBarrierOpt);
1898 Op->MBOpt.Val = Opt;
1904 static ARMOperand *CreateProcIFlags(ARM_PROC::IFlags IFlags, SMLoc S) {
1905 ARMOperand *Op = new ARMOperand(k_ProcIFlags);
1906 Op->IFlags.Val = IFlags;
1912 static ARMOperand *CreateMSRMask(unsigned MMask, SMLoc S) {
1913 ARMOperand *Op = new ARMOperand(k_MSRMask);
1914 Op->MMask.Val = MMask;
1921 } // end anonymous namespace.
1923 void ARMOperand::print(raw_ostream &OS) const {
1926 OS << "<fpimm " << getFPImm() << "(" << ARM_AM::getFPImmFloat(getFPImm())
1930 OS << "<ARMCC::" << ARMCondCodeToString(getCondCode()) << ">";
1933 OS << "<ccout " << getReg() << ">";
1935 case k_ITCondMask: {
1936 static const char *MaskStr[] = {
1937 "()", "(t)", "(e)", "(tt)", "(et)", "(te)", "(ee)", "(ttt)", "(ett)",
1938 "(tet)", "(eet)", "(tte)", "(ete)", "(tee)", "(eee)"
1940 assert((ITMask.Mask & 0xf) == ITMask.Mask);
1941 OS << "<it-mask " << MaskStr[ITMask.Mask] << ">";
1945 OS << "<coprocessor number: " << getCoproc() << ">";
1948 OS << "<coprocessor register: " << getCoproc() << ">";
1950 case k_CoprocOption:
1951 OS << "<coprocessor option: " << CoprocOption.Val << ">";
1954 OS << "<mask: " << getMSRMask() << ">";
1957 getImm()->print(OS);
1959 case k_MemBarrierOpt:
1960 OS << "<ARM_MB::" << MemBOptToString(getMemBarrierOpt()) << ">";
1964 << " base:" << Memory.BaseRegNum;
1967 case k_PostIndexRegister:
1968 OS << "post-idx register " << (PostIdxReg.isAdd ? "" : "-")
1969 << PostIdxReg.RegNum;
1970 if (PostIdxReg.ShiftTy != ARM_AM::no_shift)
1971 OS << ARM_AM::getShiftOpcStr(PostIdxReg.ShiftTy) << " "
1972 << PostIdxReg.ShiftImm;
1975 case k_ProcIFlags: {
1976 OS << "<ARM_PROC::";
1977 unsigned IFlags = getProcIFlags();
1978 for (int i=2; i >= 0; --i)
1979 if (IFlags & (1 << i))
1980 OS << ARM_PROC::IFlagsToString(1 << i);
1985 OS << "<register " << getReg() << ">";
1987 case k_ShifterImmediate:
1988 OS << "<shift " << (ShifterImm.isASR ? "asr" : "lsl")
1989 << " #" << ShifterImm.Imm << ">";
1991 case k_ShiftedRegister:
1992 OS << "<so_reg_reg "
1993 << RegShiftedReg.SrcReg
1994 << ARM_AM::getShiftOpcStr(ARM_AM::getSORegShOp(RegShiftedReg.ShiftImm))
1995 << ", " << RegShiftedReg.ShiftReg << ", "
1996 << ARM_AM::getSORegOffset(RegShiftedReg.ShiftImm)
1999 case k_ShiftedImmediate:
2000 OS << "<so_reg_imm "
2001 << RegShiftedImm.SrcReg
2002 << ARM_AM::getShiftOpcStr(ARM_AM::getSORegShOp(RegShiftedImm.ShiftImm))
2003 << ", " << ARM_AM::getSORegOffset(RegShiftedImm.ShiftImm)
2006 case k_RotateImmediate:
2007 OS << "<ror " << " #" << (RotImm.Imm * 8) << ">";
2009 case k_BitfieldDescriptor:
2010 OS << "<bitfield " << "lsb: " << Bitfield.LSB
2011 << ", width: " << Bitfield.Width << ">";
2013 case k_RegisterList:
2014 case k_DPRRegisterList:
2015 case k_SPRRegisterList: {
2016 OS << "<register_list ";
2018 const SmallVectorImpl<unsigned> &RegList = getRegList();
2019 for (SmallVectorImpl<unsigned>::const_iterator
2020 I = RegList.begin(), E = RegList.end(); I != E; ) {
2022 if (++I < E) OS << ", ";
2029 OS << "<vector_list " << VectorList.Count << " * "
2030 << VectorList.RegNum << ">";
2033 OS << "'" << getToken() << "'";
2036 OS << "<vectorindex " << getVectorIndex() << ">";
2041 /// @name Auto-generated Match Functions
2044 static unsigned MatchRegisterName(StringRef Name);
2048 bool ARMAsmParser::ParseRegister(unsigned &RegNo,
2049 SMLoc &StartLoc, SMLoc &EndLoc) {
2050 RegNo = tryParseRegister();
2052 return (RegNo == (unsigned)-1);
2055 /// Try to parse a register name. The token must be an Identifier when called,
2056 /// and if it is a register name the token is eaten and the register number is
2057 /// returned. Otherwise return -1.
2059 int ARMAsmParser::tryParseRegister() {
2060 const AsmToken &Tok = Parser.getTok();
2061 if (Tok.isNot(AsmToken::Identifier)) return -1;
2063 // FIXME: Validate register for the current architecture; we have to do
2064 // validation later, so maybe there is no need for this here.
2065 std::string lowerCase = Tok.getString().lower();
2066 unsigned RegNum = MatchRegisterName(lowerCase);
2068 RegNum = StringSwitch<unsigned>(lowerCase)
2069 .Case("r13", ARM::SP)
2070 .Case("r14", ARM::LR)
2071 .Case("r15", ARM::PC)
2072 .Case("ip", ARM::R12)
2075 if (!RegNum) return -1;
2077 Parser.Lex(); // Eat identifier token.
2082 // Try to parse a shifter (e.g., "lsl <amt>"). On success, return 0.
2083 // If a recoverable error occurs, return 1. If an irrecoverable error
2084 // occurs, return -1. An irrecoverable error is one where tokens have been
2085 // consumed in the process of trying to parse the shifter (i.e., when it is
2086 // indeed a shifter operand, but malformed).
2087 int ARMAsmParser::tryParseShiftRegister(
2088 SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2089 SMLoc S = Parser.getTok().getLoc();
2090 const AsmToken &Tok = Parser.getTok();
2091 assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
2093 std::string lowerCase = Tok.getString().lower();
2094 ARM_AM::ShiftOpc ShiftTy = StringSwitch<ARM_AM::ShiftOpc>(lowerCase)
2095 .Case("lsl", ARM_AM::lsl)
2096 .Case("lsr", ARM_AM::lsr)
2097 .Case("asr", ARM_AM::asr)
2098 .Case("ror", ARM_AM::ror)
2099 .Case("rrx", ARM_AM::rrx)
2100 .Default(ARM_AM::no_shift);
2102 if (ShiftTy == ARM_AM::no_shift)
2105 Parser.Lex(); // Eat the operator.
2107 // The source register for the shift has already been added to the
2108 // operand list, so we need to pop it off and combine it into the shifted
2109 // register operand instead.
2110 OwningPtr<ARMOperand> PrevOp((ARMOperand*)Operands.pop_back_val());
2111 if (!PrevOp->isReg())
2112 return Error(PrevOp->getStartLoc(), "shift must be of a register");
2113 int SrcReg = PrevOp->getReg();
2116 if (ShiftTy == ARM_AM::rrx) {
2117 // RRX Doesn't have an explicit shift amount. The encoder expects
2118 // the shift register to be the same as the source register. Seems odd,
2122 // Figure out if this is shifted by a constant or a register (for non-RRX).
2123 if (Parser.getTok().is(AsmToken::Hash)) {
2124 Parser.Lex(); // Eat hash.
2125 SMLoc ImmLoc = Parser.getTok().getLoc();
2126 const MCExpr *ShiftExpr = 0;
2127 if (getParser().ParseExpression(ShiftExpr)) {
2128 Error(ImmLoc, "invalid immediate shift value");
2131 // The expression must be evaluatable as an immediate.
2132 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftExpr);
2134 Error(ImmLoc, "invalid immediate shift value");
2137 // Range check the immediate.
2138 // lsl, ror: 0 <= imm <= 31
2139 // lsr, asr: 0 <= imm <= 32
2140 Imm = CE->getValue();
2142 ((ShiftTy == ARM_AM::lsl || ShiftTy == ARM_AM::ror) && Imm > 31) ||
2143 ((ShiftTy == ARM_AM::lsr || ShiftTy == ARM_AM::asr) && Imm > 32)) {
2144 Error(ImmLoc, "immediate shift value out of range");
2147 } else if (Parser.getTok().is(AsmToken::Identifier)) {
2148 ShiftReg = tryParseRegister();
2149 SMLoc L = Parser.getTok().getLoc();
2150 if (ShiftReg == -1) {
2151 Error (L, "expected immediate or register in shift operand");
2155 Error (Parser.getTok().getLoc(),
2156 "expected immediate or register in shift operand");
2161 if (ShiftReg && ShiftTy != ARM_AM::rrx)
2162 Operands.push_back(ARMOperand::CreateShiftedRegister(ShiftTy, SrcReg,
2164 S, Parser.getTok().getLoc()));
2166 Operands.push_back(ARMOperand::CreateShiftedImmediate(ShiftTy, SrcReg, Imm,
2167 S, Parser.getTok().getLoc()));
2173 /// Try to parse a register name. The token must be an Identifier when called.
2174 /// If it's a register, an AsmOperand is created. Another AsmOperand is created
2175 /// if there is a "writeback". 'true' if it's not a register.
2177 /// TODO this is likely to change to allow different register types and or to
2178 /// parse for a specific register type.
2180 tryParseRegisterWithWriteBack(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2181 SMLoc S = Parser.getTok().getLoc();
2182 int RegNo = tryParseRegister();
2186 Operands.push_back(ARMOperand::CreateReg(RegNo, S, Parser.getTok().getLoc()));
2188 const AsmToken &ExclaimTok = Parser.getTok();
2189 if (ExclaimTok.is(AsmToken::Exclaim)) {
2190 Operands.push_back(ARMOperand::CreateToken(ExclaimTok.getString(),
2191 ExclaimTok.getLoc()));
2192 Parser.Lex(); // Eat exclaim token
2196 // Also check for an index operand. This is only legal for vector registers,
2197 // but that'll get caught OK in operand matching, so we don't need to
2198 // explicitly filter everything else out here.
2199 if (Parser.getTok().is(AsmToken::LBrac)) {
2200 SMLoc SIdx = Parser.getTok().getLoc();
2201 Parser.Lex(); // Eat left bracket token.
2203 const MCExpr *ImmVal;
2204 if (getParser().ParseExpression(ImmVal))
2205 return MatchOperand_ParseFail;
2206 const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal);
2208 TokError("immediate value expected for vector index");
2209 return MatchOperand_ParseFail;
2212 SMLoc E = Parser.getTok().getLoc();
2213 if (Parser.getTok().isNot(AsmToken::RBrac)) {
2214 Error(E, "']' expected");
2215 return MatchOperand_ParseFail;
2218 Parser.Lex(); // Eat right bracket token.
2220 Operands.push_back(ARMOperand::CreateVectorIndex(MCE->getValue(),
2228 /// MatchCoprocessorOperandName - Try to parse an coprocessor related
2229 /// instruction with a symbolic operand name. Example: "p1", "p7", "c3",
2231 static int MatchCoprocessorOperandName(StringRef Name, char CoprocOp) {
2232 // Use the same layout as the tablegen'erated register name matcher. Ugly,
2234 switch (Name.size()) {
2237 if (Name[0] != CoprocOp)
2254 if (Name[0] != CoprocOp || Name[1] != '1')
2258 case '0': return 10;
2259 case '1': return 11;
2260 case '2': return 12;
2261 case '3': return 13;
2262 case '4': return 14;
2263 case '5': return 15;
2271 /// parseITCondCode - Try to parse a condition code for an IT instruction.
2272 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2273 parseITCondCode(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2274 SMLoc S = Parser.getTok().getLoc();
2275 const AsmToken &Tok = Parser.getTok();
2276 if (!Tok.is(AsmToken::Identifier))
2277 return MatchOperand_NoMatch;
2278 unsigned CC = StringSwitch<unsigned>(Tok.getString())
2279 .Case("eq", ARMCC::EQ)
2280 .Case("ne", ARMCC::NE)
2281 .Case("hs", ARMCC::HS)
2282 .Case("cs", ARMCC::HS)
2283 .Case("lo", ARMCC::LO)
2284 .Case("cc", ARMCC::LO)
2285 .Case("mi", ARMCC::MI)
2286 .Case("pl", ARMCC::PL)
2287 .Case("vs", ARMCC::VS)
2288 .Case("vc", ARMCC::VC)
2289 .Case("hi", ARMCC::HI)
2290 .Case("ls", ARMCC::LS)
2291 .Case("ge", ARMCC::GE)
2292 .Case("lt", ARMCC::LT)
2293 .Case("gt", ARMCC::GT)
2294 .Case("le", ARMCC::LE)
2295 .Case("al", ARMCC::AL)
2298 return MatchOperand_NoMatch;
2299 Parser.Lex(); // Eat the token.
2301 Operands.push_back(ARMOperand::CreateCondCode(ARMCC::CondCodes(CC), S));
2303 return MatchOperand_Success;
2306 /// parseCoprocNumOperand - Try to parse an coprocessor number operand. The
2307 /// token must be an Identifier when called, and if it is a coprocessor
2308 /// number, the token is eaten and the operand is added to the operand list.
2309 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2310 parseCoprocNumOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2311 SMLoc S = Parser.getTok().getLoc();
2312 const AsmToken &Tok = Parser.getTok();
2313 if (Tok.isNot(AsmToken::Identifier))
2314 return MatchOperand_NoMatch;
2316 int Num = MatchCoprocessorOperandName(Tok.getString(), 'p');
2318 return MatchOperand_NoMatch;
2320 Parser.Lex(); // Eat identifier token.
2321 Operands.push_back(ARMOperand::CreateCoprocNum(Num, S));
2322 return MatchOperand_Success;
2325 /// parseCoprocRegOperand - Try to parse an coprocessor register operand. The
2326 /// token must be an Identifier when called, and if it is a coprocessor
2327 /// number, the token is eaten and the operand is added to the operand list.
2328 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2329 parseCoprocRegOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2330 SMLoc S = Parser.getTok().getLoc();
2331 const AsmToken &Tok = Parser.getTok();
2332 if (Tok.isNot(AsmToken::Identifier))
2333 return MatchOperand_NoMatch;
2335 int Reg = MatchCoprocessorOperandName(Tok.getString(), 'c');
2337 return MatchOperand_NoMatch;
2339 Parser.Lex(); // Eat identifier token.
2340 Operands.push_back(ARMOperand::CreateCoprocReg(Reg, S));
2341 return MatchOperand_Success;
2344 /// parseCoprocOptionOperand - Try to parse an coprocessor option operand.
2345 /// coproc_option : '{' imm0_255 '}'
2346 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2347 parseCoprocOptionOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2348 SMLoc S = Parser.getTok().getLoc();
2350 // If this isn't a '{', this isn't a coprocessor immediate operand.
2351 if (Parser.getTok().isNot(AsmToken::LCurly))
2352 return MatchOperand_NoMatch;
2353 Parser.Lex(); // Eat the '{'
2356 SMLoc Loc = Parser.getTok().getLoc();
2357 if (getParser().ParseExpression(Expr)) {
2358 Error(Loc, "illegal expression");
2359 return MatchOperand_ParseFail;
2361 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
2362 if (!CE || CE->getValue() < 0 || CE->getValue() > 255) {
2363 Error(Loc, "coprocessor option must be an immediate in range [0, 255]");
2364 return MatchOperand_ParseFail;
2366 int Val = CE->getValue();
2368 // Check for and consume the closing '}'
2369 if (Parser.getTok().isNot(AsmToken::RCurly))
2370 return MatchOperand_ParseFail;
2371 SMLoc E = Parser.getTok().getLoc();
2372 Parser.Lex(); // Eat the '}'
2374 Operands.push_back(ARMOperand::CreateCoprocOption(Val, S, E));
2375 return MatchOperand_Success;
2378 // For register list parsing, we need to map from raw GPR register numbering
2379 // to the enumeration values. The enumeration values aren't sorted by
2380 // register number due to our using "sp", "lr" and "pc" as canonical names.
2381 static unsigned getNextRegister(unsigned Reg) {
2382 // If this is a GPR, we need to do it manually, otherwise we can rely
2383 // on the sort ordering of the enumeration since the other reg-classes
2385 if (!ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
2388 default: assert(0 && "Invalid GPR number!");
2389 case ARM::R0: return ARM::R1; case ARM::R1: return ARM::R2;
2390 case ARM::R2: return ARM::R3; case ARM::R3: return ARM::R4;
2391 case ARM::R4: return ARM::R5; case ARM::R5: return ARM::R6;
2392 case ARM::R6: return ARM::R7; case ARM::R7: return ARM::R8;
2393 case ARM::R8: return ARM::R9; case ARM::R9: return ARM::R10;
2394 case ARM::R10: return ARM::R11; case ARM::R11: return ARM::R12;
2395 case ARM::R12: return ARM::SP; case ARM::SP: return ARM::LR;
2396 case ARM::LR: return ARM::PC; case ARM::PC: return ARM::R0;
2400 /// Parse a register list.
2402 parseRegisterList(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2403 assert(Parser.getTok().is(AsmToken::LCurly) &&
2404 "Token is not a Left Curly Brace");
2405 SMLoc S = Parser.getTok().getLoc();
2406 Parser.Lex(); // Eat '{' token.
2407 SMLoc RegLoc = Parser.getTok().getLoc();
2409 // Check the first register in the list to see what register class
2410 // this is a list of.
2411 int Reg = tryParseRegister();
2413 return Error(RegLoc, "register expected");
2415 const MCRegisterClass *RC;
2416 if (ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
2417 RC = &ARMMCRegisterClasses[ARM::GPRRegClassID];
2418 else if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg))
2419 RC = &ARMMCRegisterClasses[ARM::DPRRegClassID];
2420 else if (ARMMCRegisterClasses[ARM::SPRRegClassID].contains(Reg))
2421 RC = &ARMMCRegisterClasses[ARM::SPRRegClassID];
2423 return Error(RegLoc, "invalid register in register list");
2425 // The reglist instructions have at most 16 registers, so reserve
2426 // space for that many.
2427 SmallVector<std::pair<unsigned, SMLoc>, 16> Registers;
2428 // Store the first register.
2429 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2431 // This starts immediately after the first register token in the list,
2432 // so we can see either a comma or a minus (range separator) as a legal
2434 while (Parser.getTok().is(AsmToken::Comma) ||
2435 Parser.getTok().is(AsmToken::Minus)) {
2436 if (Parser.getTok().is(AsmToken::Minus)) {
2437 Parser.Lex(); // Eat the comma.
2438 SMLoc EndLoc = Parser.getTok().getLoc();
2439 int EndReg = tryParseRegister();
2441 return Error(EndLoc, "register expected");
2442 // If the register is the same as the start reg, there's nothing
2446 // The register must be in the same register class as the first.
2447 if (!RC->contains(EndReg))
2448 return Error(EndLoc, "invalid register in register list");
2449 // Ranges must go from low to high.
2450 if (getARMRegisterNumbering(Reg) > getARMRegisterNumbering(EndReg))
2451 return Error(EndLoc, "bad range in register list");
2453 // Add all the registers in the range to the register list.
2454 while (Reg != EndReg) {
2455 Reg = getNextRegister(Reg);
2456 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2460 Parser.Lex(); // Eat the comma.
2461 RegLoc = Parser.getTok().getLoc();
2463 Reg = tryParseRegister();
2465 return Error(RegLoc, "register expected");
2466 // The register must be in the same register class as the first.
2467 if (!RC->contains(Reg))
2468 return Error(RegLoc, "invalid register in register list");
2469 // List must be monotonically increasing.
2470 if (getARMRegisterNumbering(Reg) <= getARMRegisterNumbering(OldReg))
2471 return Error(RegLoc, "register list not in ascending order");
2472 // VFP register lists must also be contiguous.
2473 // It's OK to use the enumeration values directly here rather, as the
2474 // VFP register classes have the enum sorted properly.
2475 if (RC != &ARMMCRegisterClasses[ARM::GPRRegClassID] &&
2477 return Error(RegLoc, "non-contiguous register range");
2478 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2481 SMLoc E = Parser.getTok().getLoc();
2482 if (Parser.getTok().isNot(AsmToken::RCurly))
2483 return Error(E, "'}' expected");
2484 Parser.Lex(); // Eat '}' token.
2486 Operands.push_back(ARMOperand::CreateRegList(Registers, S, E));
2490 // Return the low-subreg of a given Q register.
2491 static unsigned getDRegFromQReg(unsigned QReg) {
2493 default: llvm_unreachable("expected a Q register!");
2494 case ARM::Q0: return ARM::D0;
2495 case ARM::Q1: return ARM::D2;
2496 case ARM::Q2: return ARM::D4;
2497 case ARM::Q3: return ARM::D6;
2498 case ARM::Q4: return ARM::D8;
2499 case ARM::Q5: return ARM::D10;
2500 case ARM::Q6: return ARM::D12;
2501 case ARM::Q7: return ARM::D14;
2502 case ARM::Q8: return ARM::D16;
2503 case ARM::Q9: return ARM::D19;
2504 case ARM::Q10: return ARM::D20;
2505 case ARM::Q11: return ARM::D22;
2506 case ARM::Q12: return ARM::D24;
2507 case ARM::Q13: return ARM::D26;
2508 case ARM::Q14: return ARM::D28;
2509 case ARM::Q15: return ARM::D30;
2513 // parse a vector register list
2514 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2515 parseVectorList(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2516 if(Parser.getTok().isNot(AsmToken::LCurly))
2517 return MatchOperand_NoMatch;
2519 SMLoc S = Parser.getTok().getLoc();
2520 Parser.Lex(); // Eat '{' token.
2521 SMLoc RegLoc = Parser.getTok().getLoc();
2523 int Reg = tryParseRegister();
2525 Error(RegLoc, "register expected");
2526 return MatchOperand_ParseFail;
2529 unsigned FirstReg = Reg;
2530 // The list is of D registers, but we also allow Q regs and just interpret
2531 // them as the two D sub-registers.
2532 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2533 FirstReg = Reg = getDRegFromQReg(Reg);
2538 while (Parser.getTok().is(AsmToken::Comma)) {
2539 Parser.Lex(); // Eat the comma.
2540 RegLoc = Parser.getTok().getLoc();
2542 Reg = tryParseRegister();
2544 Error(RegLoc, "register expected");
2545 return MatchOperand_ParseFail;
2547 // vector register lists must be contiguous.
2548 // It's OK to use the enumeration values directly here rather, as the
2549 // VFP register classes have the enum sorted properly.
2551 // The list is of D registers, but we also allow Q regs and just interpret
2552 // them as the two D sub-registers.
2553 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2554 Reg = getDRegFromQReg(Reg);
2555 if (Reg != OldReg + 1) {
2556 Error(RegLoc, "non-contiguous register range");
2557 return MatchOperand_ParseFail;
2563 // Normal D register. Just check that it's contiguous and keep going.
2564 if (Reg != OldReg + 1) {
2565 Error(RegLoc, "non-contiguous register range");
2566 return MatchOperand_ParseFail;
2571 SMLoc E = Parser.getTok().getLoc();
2572 if (Parser.getTok().isNot(AsmToken::RCurly)) {
2573 Error(E, "'}' expected");
2574 return MatchOperand_ParseFail;
2576 Parser.Lex(); // Eat '}' token.
2578 Operands.push_back(ARMOperand::CreateVectorList(FirstReg, Count, S, E));
2579 return MatchOperand_Success;
2582 /// parseMemBarrierOptOperand - Try to parse DSB/DMB data barrier options.
2583 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2584 parseMemBarrierOptOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2585 SMLoc S = Parser.getTok().getLoc();
2586 const AsmToken &Tok = Parser.getTok();
2587 assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
2588 StringRef OptStr = Tok.getString();
2590 unsigned Opt = StringSwitch<unsigned>(OptStr.slice(0, OptStr.size()))
2591 .Case("sy", ARM_MB::SY)
2592 .Case("st", ARM_MB::ST)
2593 .Case("sh", ARM_MB::ISH)
2594 .Case("ish", ARM_MB::ISH)
2595 .Case("shst", ARM_MB::ISHST)
2596 .Case("ishst", ARM_MB::ISHST)
2597 .Case("nsh", ARM_MB::NSH)
2598 .Case("un", ARM_MB::NSH)
2599 .Case("nshst", ARM_MB::NSHST)
2600 .Case("unst", ARM_MB::NSHST)
2601 .Case("osh", ARM_MB::OSH)
2602 .Case("oshst", ARM_MB::OSHST)
2606 return MatchOperand_NoMatch;
2608 Parser.Lex(); // Eat identifier token.
2609 Operands.push_back(ARMOperand::CreateMemBarrierOpt((ARM_MB::MemBOpt)Opt, S));
2610 return MatchOperand_Success;
2613 /// parseProcIFlagsOperand - Try to parse iflags from CPS instruction.
2614 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2615 parseProcIFlagsOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2616 SMLoc S = Parser.getTok().getLoc();
2617 const AsmToken &Tok = Parser.getTok();
2618 assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
2619 StringRef IFlagsStr = Tok.getString();
2621 // An iflags string of "none" is interpreted to mean that none of the AIF
2622 // bits are set. Not a terribly useful instruction, but a valid encoding.
2623 unsigned IFlags = 0;
2624 if (IFlagsStr != "none") {
2625 for (int i = 0, e = IFlagsStr.size(); i != e; ++i) {
2626 unsigned Flag = StringSwitch<unsigned>(IFlagsStr.substr(i, 1))
2627 .Case("a", ARM_PROC::A)
2628 .Case("i", ARM_PROC::I)
2629 .Case("f", ARM_PROC::F)
2632 // If some specific iflag is already set, it means that some letter is
2633 // present more than once, this is not acceptable.
2634 if (Flag == ~0U || (IFlags & Flag))
2635 return MatchOperand_NoMatch;
2641 Parser.Lex(); // Eat identifier token.
2642 Operands.push_back(ARMOperand::CreateProcIFlags((ARM_PROC::IFlags)IFlags, S));
2643 return MatchOperand_Success;
2646 /// parseMSRMaskOperand - Try to parse mask flags from MSR instruction.
2647 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2648 parseMSRMaskOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2649 SMLoc S = Parser.getTok().getLoc();
2650 const AsmToken &Tok = Parser.getTok();
2651 assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
2652 StringRef Mask = Tok.getString();
2655 // See ARMv6-M 10.1.1
2656 unsigned FlagsVal = StringSwitch<unsigned>(Mask)
2666 .Case("primask", 16)
2667 .Case("basepri", 17)
2668 .Case("basepri_max", 18)
2669 .Case("faultmask", 19)
2670 .Case("control", 20)
2673 if (FlagsVal == ~0U)
2674 return MatchOperand_NoMatch;
2676 if (!hasV7Ops() && FlagsVal >= 17 && FlagsVal <= 19)
2677 // basepri, basepri_max and faultmask only valid for V7m.
2678 return MatchOperand_NoMatch;
2680 Parser.Lex(); // Eat identifier token.
2681 Operands.push_back(ARMOperand::CreateMSRMask(FlagsVal, S));
2682 return MatchOperand_Success;
2685 // Split spec_reg from flag, example: CPSR_sxf => "CPSR" and "sxf"
2686 size_t Start = 0, Next = Mask.find('_');
2687 StringRef Flags = "";
2688 std::string SpecReg = Mask.slice(Start, Next).lower();
2689 if (Next != StringRef::npos)
2690 Flags = Mask.slice(Next+1, Mask.size());
2692 // FlagsVal contains the complete mask:
2694 // 4: Special Reg (cpsr, apsr => 0; spsr => 1)
2695 unsigned FlagsVal = 0;
2697 if (SpecReg == "apsr") {
2698 FlagsVal = StringSwitch<unsigned>(Flags)
2699 .Case("nzcvq", 0x8) // same as CPSR_f
2700 .Case("g", 0x4) // same as CPSR_s
2701 .Case("nzcvqg", 0xc) // same as CPSR_fs
2704 if (FlagsVal == ~0U) {
2706 return MatchOperand_NoMatch;
2708 FlagsVal = 8; // No flag
2710 } else if (SpecReg == "cpsr" || SpecReg == "spsr") {
2711 if (Flags == "all") // cpsr_all is an alias for cpsr_fc
2713 for (int i = 0, e = Flags.size(); i != e; ++i) {
2714 unsigned Flag = StringSwitch<unsigned>(Flags.substr(i, 1))
2721 // If some specific flag is already set, it means that some letter is
2722 // present more than once, this is not acceptable.
2723 if (FlagsVal == ~0U || (FlagsVal & Flag))
2724 return MatchOperand_NoMatch;
2727 } else // No match for special register.
2728 return MatchOperand_NoMatch;
2730 // Special register without flags is NOT equivalent to "fc" flags.
2731 // NOTE: This is a divergence from gas' behavior. Uncommenting the following
2732 // two lines would enable gas compatibility at the expense of breaking
2738 // Bit 4: Special Reg (cpsr, apsr => 0; spsr => 1)
2739 if (SpecReg == "spsr")
2742 Parser.Lex(); // Eat identifier token.
2743 Operands.push_back(ARMOperand::CreateMSRMask(FlagsVal, S));
2744 return MatchOperand_Success;
2747 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2748 parsePKHImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands, StringRef Op,
2749 int Low, int High) {
2750 const AsmToken &Tok = Parser.getTok();
2751 if (Tok.isNot(AsmToken::Identifier)) {
2752 Error(Parser.getTok().getLoc(), Op + " operand expected.");
2753 return MatchOperand_ParseFail;
2755 StringRef ShiftName = Tok.getString();
2756 std::string LowerOp = Op.lower();
2757 std::string UpperOp = Op.upper();
2758 if (ShiftName != LowerOp && ShiftName != UpperOp) {
2759 Error(Parser.getTok().getLoc(), Op + " operand expected.");
2760 return MatchOperand_ParseFail;
2762 Parser.Lex(); // Eat shift type token.
2764 // There must be a '#' and a shift amount.
2765 if (Parser.getTok().isNot(AsmToken::Hash)) {
2766 Error(Parser.getTok().getLoc(), "'#' expected");
2767 return MatchOperand_ParseFail;
2769 Parser.Lex(); // Eat hash token.
2771 const MCExpr *ShiftAmount;
2772 SMLoc Loc = Parser.getTok().getLoc();
2773 if (getParser().ParseExpression(ShiftAmount)) {
2774 Error(Loc, "illegal expression");
2775 return MatchOperand_ParseFail;
2777 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
2779 Error(Loc, "constant expression expected");
2780 return MatchOperand_ParseFail;
2782 int Val = CE->getValue();
2783 if (Val < Low || Val > High) {
2784 Error(Loc, "immediate value out of range");
2785 return MatchOperand_ParseFail;
2788 Operands.push_back(ARMOperand::CreateImm(CE, Loc, Parser.getTok().getLoc()));
2790 return MatchOperand_Success;
2793 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2794 parseSetEndImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2795 const AsmToken &Tok = Parser.getTok();
2796 SMLoc S = Tok.getLoc();
2797 if (Tok.isNot(AsmToken::Identifier)) {
2798 Error(Tok.getLoc(), "'be' or 'le' operand expected");
2799 return MatchOperand_ParseFail;
2801 int Val = StringSwitch<int>(Tok.getString())
2805 Parser.Lex(); // Eat the token.
2808 Error(Tok.getLoc(), "'be' or 'le' operand expected");
2809 return MatchOperand_ParseFail;
2811 Operands.push_back(ARMOperand::CreateImm(MCConstantExpr::Create(Val,
2813 S, Parser.getTok().getLoc()));
2814 return MatchOperand_Success;
2817 /// parseShifterImm - Parse the shifter immediate operand for SSAT/USAT
2818 /// instructions. Legal values are:
2819 /// lsl #n 'n' in [0,31]
2820 /// asr #n 'n' in [1,32]
2821 /// n == 32 encoded as n == 0.
2822 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2823 parseShifterImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2824 const AsmToken &Tok = Parser.getTok();
2825 SMLoc S = Tok.getLoc();
2826 if (Tok.isNot(AsmToken::Identifier)) {
2827 Error(S, "shift operator 'asr' or 'lsl' expected");
2828 return MatchOperand_ParseFail;
2830 StringRef ShiftName = Tok.getString();
2832 if (ShiftName == "lsl" || ShiftName == "LSL")
2834 else if (ShiftName == "asr" || ShiftName == "ASR")
2837 Error(S, "shift operator 'asr' or 'lsl' expected");
2838 return MatchOperand_ParseFail;
2840 Parser.Lex(); // Eat the operator.
2842 // A '#' and a shift amount.
2843 if (Parser.getTok().isNot(AsmToken::Hash)) {
2844 Error(Parser.getTok().getLoc(), "'#' expected");
2845 return MatchOperand_ParseFail;
2847 Parser.Lex(); // Eat hash token.
2849 const MCExpr *ShiftAmount;
2850 SMLoc E = Parser.getTok().getLoc();
2851 if (getParser().ParseExpression(ShiftAmount)) {
2852 Error(E, "malformed shift expression");
2853 return MatchOperand_ParseFail;
2855 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
2857 Error(E, "shift amount must be an immediate");
2858 return MatchOperand_ParseFail;
2861 int64_t Val = CE->getValue();
2863 // Shift amount must be in [1,32]
2864 if (Val < 1 || Val > 32) {
2865 Error(E, "'asr' shift amount must be in range [1,32]");
2866 return MatchOperand_ParseFail;
2868 // asr #32 encoded as asr #0, but is not allowed in Thumb2 mode.
2869 if (isThumb() && Val == 32) {
2870 Error(E, "'asr #32' shift amount not allowed in Thumb mode");
2871 return MatchOperand_ParseFail;
2873 if (Val == 32) Val = 0;
2875 // Shift amount must be in [1,32]
2876 if (Val < 0 || Val > 31) {
2877 Error(E, "'lsr' shift amount must be in range [0,31]");
2878 return MatchOperand_ParseFail;
2882 E = Parser.getTok().getLoc();
2883 Operands.push_back(ARMOperand::CreateShifterImm(isASR, Val, S, E));
2885 return MatchOperand_Success;
2888 /// parseRotImm - Parse the shifter immediate operand for SXTB/UXTB family
2889 /// of instructions. Legal values are:
2890 /// ror #n 'n' in {0, 8, 16, 24}
2891 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2892 parseRotImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2893 const AsmToken &Tok = Parser.getTok();
2894 SMLoc S = Tok.getLoc();
2895 if (Tok.isNot(AsmToken::Identifier))
2896 return MatchOperand_NoMatch;
2897 StringRef ShiftName = Tok.getString();
2898 if (ShiftName != "ror" && ShiftName != "ROR")
2899 return MatchOperand_NoMatch;
2900 Parser.Lex(); // Eat the operator.
2902 // A '#' and a rotate amount.
2903 if (Parser.getTok().isNot(AsmToken::Hash)) {
2904 Error(Parser.getTok().getLoc(), "'#' expected");
2905 return MatchOperand_ParseFail;
2907 Parser.Lex(); // Eat hash token.
2909 const MCExpr *ShiftAmount;
2910 SMLoc E = Parser.getTok().getLoc();
2911 if (getParser().ParseExpression(ShiftAmount)) {
2912 Error(E, "malformed rotate expression");
2913 return MatchOperand_ParseFail;
2915 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
2917 Error(E, "rotate amount must be an immediate");
2918 return MatchOperand_ParseFail;
2921 int64_t Val = CE->getValue();
2922 // Shift amount must be in {0, 8, 16, 24} (0 is undocumented extension)
2923 // normally, zero is represented in asm by omitting the rotate operand
2925 if (Val != 8 && Val != 16 && Val != 24 && Val != 0) {
2926 Error(E, "'ror' rotate amount must be 8, 16, or 24");
2927 return MatchOperand_ParseFail;
2930 E = Parser.getTok().getLoc();
2931 Operands.push_back(ARMOperand::CreateRotImm(Val, S, E));
2933 return MatchOperand_Success;
2936 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2937 parseBitfield(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2938 SMLoc S = Parser.getTok().getLoc();
2939 // The bitfield descriptor is really two operands, the LSB and the width.
2940 if (Parser.getTok().isNot(AsmToken::Hash)) {
2941 Error(Parser.getTok().getLoc(), "'#' expected");
2942 return MatchOperand_ParseFail;
2944 Parser.Lex(); // Eat hash token.
2946 const MCExpr *LSBExpr;
2947 SMLoc E = Parser.getTok().getLoc();
2948 if (getParser().ParseExpression(LSBExpr)) {
2949 Error(E, "malformed immediate expression");
2950 return MatchOperand_ParseFail;
2952 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(LSBExpr);
2954 Error(E, "'lsb' operand must be an immediate");
2955 return MatchOperand_ParseFail;
2958 int64_t LSB = CE->getValue();
2959 // The LSB must be in the range [0,31]
2960 if (LSB < 0 || LSB > 31) {
2961 Error(E, "'lsb' operand must be in the range [0,31]");
2962 return MatchOperand_ParseFail;
2964 E = Parser.getTok().getLoc();
2966 // Expect another immediate operand.
2967 if (Parser.getTok().isNot(AsmToken::Comma)) {
2968 Error(Parser.getTok().getLoc(), "too few operands");
2969 return MatchOperand_ParseFail;
2971 Parser.Lex(); // Eat hash token.
2972 if (Parser.getTok().isNot(AsmToken::Hash)) {
2973 Error(Parser.getTok().getLoc(), "'#' expected");
2974 return MatchOperand_ParseFail;
2976 Parser.Lex(); // Eat hash token.
2978 const MCExpr *WidthExpr;
2979 if (getParser().ParseExpression(WidthExpr)) {
2980 Error(E, "malformed immediate expression");
2981 return MatchOperand_ParseFail;
2983 CE = dyn_cast<MCConstantExpr>(WidthExpr);
2985 Error(E, "'width' operand must be an immediate");
2986 return MatchOperand_ParseFail;
2989 int64_t Width = CE->getValue();
2990 // The LSB must be in the range [1,32-lsb]
2991 if (Width < 1 || Width > 32 - LSB) {
2992 Error(E, "'width' operand must be in the range [1,32-lsb]");
2993 return MatchOperand_ParseFail;
2995 E = Parser.getTok().getLoc();
2997 Operands.push_back(ARMOperand::CreateBitfield(LSB, Width, S, E));
2999 return MatchOperand_Success;
3002 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3003 parsePostIdxReg(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3004 // Check for a post-index addressing register operand. Specifically:
3005 // postidx_reg := '+' register {, shift}
3006 // | '-' register {, shift}
3007 // | register {, shift}
3009 // This method must return MatchOperand_NoMatch without consuming any tokens
3010 // in the case where there is no match, as other alternatives take other
3012 AsmToken Tok = Parser.getTok();
3013 SMLoc S = Tok.getLoc();
3014 bool haveEaten = false;
3017 if (Tok.is(AsmToken::Plus)) {
3018 Parser.Lex(); // Eat the '+' token.
3020 } else if (Tok.is(AsmToken::Minus)) {
3021 Parser.Lex(); // Eat the '-' token.
3025 if (Parser.getTok().is(AsmToken::Identifier))
3026 Reg = tryParseRegister();
3029 return MatchOperand_NoMatch;
3030 Error(Parser.getTok().getLoc(), "register expected");
3031 return MatchOperand_ParseFail;
3033 SMLoc E = Parser.getTok().getLoc();
3035 ARM_AM::ShiftOpc ShiftTy = ARM_AM::no_shift;
3036 unsigned ShiftImm = 0;
3037 if (Parser.getTok().is(AsmToken::Comma)) {
3038 Parser.Lex(); // Eat the ','.
3039 if (parseMemRegOffsetShift(ShiftTy, ShiftImm))
3040 return MatchOperand_ParseFail;
3043 Operands.push_back(ARMOperand::CreatePostIdxReg(Reg, isAdd, ShiftTy,
3046 return MatchOperand_Success;
3049 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3050 parseAM3Offset(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3051 // Check for a post-index addressing register operand. Specifically:
3052 // am3offset := '+' register
3059 // This method must return MatchOperand_NoMatch without consuming any tokens
3060 // in the case where there is no match, as other alternatives take other
3062 AsmToken Tok = Parser.getTok();
3063 SMLoc S = Tok.getLoc();
3065 // Do immediates first, as we always parse those if we have a '#'.
3066 if (Parser.getTok().is(AsmToken::Hash)) {
3067 Parser.Lex(); // Eat the '#'.
3068 // Explicitly look for a '-', as we need to encode negative zero
3070 bool isNegative = Parser.getTok().is(AsmToken::Minus);
3071 const MCExpr *Offset;
3072 if (getParser().ParseExpression(Offset))
3073 return MatchOperand_ParseFail;
3074 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Offset);
3076 Error(S, "constant expression expected");
3077 return MatchOperand_ParseFail;
3079 SMLoc E = Tok.getLoc();
3080 // Negative zero is encoded as the flag value INT32_MIN.
3081 int32_t Val = CE->getValue();
3082 if (isNegative && Val == 0)
3086 ARMOperand::CreateImm(MCConstantExpr::Create(Val, getContext()), S, E));
3088 return MatchOperand_Success;
3092 bool haveEaten = false;
3095 if (Tok.is(AsmToken::Plus)) {
3096 Parser.Lex(); // Eat the '+' token.
3098 } else if (Tok.is(AsmToken::Minus)) {
3099 Parser.Lex(); // Eat the '-' token.
3103 if (Parser.getTok().is(AsmToken::Identifier))
3104 Reg = tryParseRegister();
3107 return MatchOperand_NoMatch;
3108 Error(Parser.getTok().getLoc(), "register expected");
3109 return MatchOperand_ParseFail;
3111 SMLoc E = Parser.getTok().getLoc();
3113 Operands.push_back(ARMOperand::CreatePostIdxReg(Reg, isAdd, ARM_AM::no_shift,
3116 return MatchOperand_Success;
3119 /// cvtT2LdrdPre - Convert parsed operands to MCInst.
3120 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3121 /// when they refer multiple MIOperands inside a single one.
3123 cvtT2LdrdPre(MCInst &Inst, unsigned Opcode,
3124 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3126 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3127 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3128 // Create a writeback register dummy placeholder.
3129 Inst.addOperand(MCOperand::CreateReg(0));
3131 ((ARMOperand*)Operands[4])->addMemImm8s4OffsetOperands(Inst, 2);
3133 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3137 /// cvtT2StrdPre - Convert parsed operands to MCInst.
3138 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3139 /// when they refer multiple MIOperands inside a single one.
3141 cvtT2StrdPre(MCInst &Inst, unsigned Opcode,
3142 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3143 // Create a writeback register dummy placeholder.
3144 Inst.addOperand(MCOperand::CreateReg(0));
3146 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3147 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3149 ((ARMOperand*)Operands[4])->addMemImm8s4OffsetOperands(Inst, 2);
3151 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3155 /// cvtLdWriteBackRegT2AddrModeImm8 - Convert parsed operands to MCInst.
3156 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3157 /// when they refer multiple MIOperands inside a single one.
3159 cvtLdWriteBackRegT2AddrModeImm8(MCInst &Inst, unsigned Opcode,
3160 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3161 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3163 // Create a writeback register dummy placeholder.
3164 Inst.addOperand(MCOperand::CreateImm(0));
3166 ((ARMOperand*)Operands[3])->addMemImm8OffsetOperands(Inst, 2);
3167 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3171 /// cvtStWriteBackRegT2AddrModeImm8 - Convert parsed operands to MCInst.
3172 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3173 /// when they refer multiple MIOperands inside a single one.
3175 cvtStWriteBackRegT2AddrModeImm8(MCInst &Inst, unsigned Opcode,
3176 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3177 // Create a writeback register dummy placeholder.
3178 Inst.addOperand(MCOperand::CreateImm(0));
3179 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3180 ((ARMOperand*)Operands[3])->addMemImm8OffsetOperands(Inst, 2);
3181 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3185 /// cvtLdWriteBackRegAddrMode2 - Convert parsed operands to MCInst.
3186 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3187 /// when they refer multiple MIOperands inside a single one.
3189 cvtLdWriteBackRegAddrMode2(MCInst &Inst, unsigned Opcode,
3190 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3191 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3193 // Create a writeback register dummy placeholder.
3194 Inst.addOperand(MCOperand::CreateImm(0));
3196 ((ARMOperand*)Operands[3])->addAddrMode2Operands(Inst, 3);
3197 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3201 /// cvtLdWriteBackRegAddrModeImm12 - Convert parsed operands to MCInst.
3202 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3203 /// when they refer multiple MIOperands inside a single one.
3205 cvtLdWriteBackRegAddrModeImm12(MCInst &Inst, unsigned Opcode,
3206 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3207 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3209 // Create a writeback register dummy placeholder.
3210 Inst.addOperand(MCOperand::CreateImm(0));
3212 ((ARMOperand*)Operands[3])->addMemImm12OffsetOperands(Inst, 2);
3213 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3218 /// cvtStWriteBackRegAddrModeImm12 - Convert parsed operands to MCInst.
3219 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3220 /// when they refer multiple MIOperands inside a single one.
3222 cvtStWriteBackRegAddrModeImm12(MCInst &Inst, unsigned Opcode,
3223 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3224 // Create a writeback register dummy placeholder.
3225 Inst.addOperand(MCOperand::CreateImm(0));
3226 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3227 ((ARMOperand*)Operands[3])->addMemImm12OffsetOperands(Inst, 2);
3228 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3232 /// cvtStWriteBackRegAddrMode2 - Convert parsed operands to MCInst.
3233 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3234 /// when they refer multiple MIOperands inside a single one.
3236 cvtStWriteBackRegAddrMode2(MCInst &Inst, unsigned Opcode,
3237 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3238 // Create a writeback register dummy placeholder.
3239 Inst.addOperand(MCOperand::CreateImm(0));
3240 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3241 ((ARMOperand*)Operands[3])->addAddrMode2Operands(Inst, 3);
3242 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3246 /// cvtStWriteBackRegAddrMode3 - Convert parsed operands to MCInst.
3247 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3248 /// when they refer multiple MIOperands inside a single one.
3250 cvtStWriteBackRegAddrMode3(MCInst &Inst, unsigned Opcode,
3251 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3252 // Create a writeback register dummy placeholder.
3253 Inst.addOperand(MCOperand::CreateImm(0));
3254 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3255 ((ARMOperand*)Operands[3])->addAddrMode3Operands(Inst, 3);
3256 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3260 /// cvtLdExtTWriteBackImm - Convert parsed operands to MCInst.
3261 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3262 /// when they refer multiple MIOperands inside a single one.
3264 cvtLdExtTWriteBackImm(MCInst &Inst, unsigned Opcode,
3265 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3267 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3268 // Create a writeback register dummy placeholder.
3269 Inst.addOperand(MCOperand::CreateImm(0));
3271 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
3273 ((ARMOperand*)Operands[4])->addPostIdxImm8Operands(Inst, 1);
3275 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3279 /// cvtLdExtTWriteBackReg - Convert parsed operands to MCInst.
3280 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3281 /// when they refer multiple MIOperands inside a single one.
3283 cvtLdExtTWriteBackReg(MCInst &Inst, unsigned Opcode,
3284 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3286 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3287 // Create a writeback register dummy placeholder.
3288 Inst.addOperand(MCOperand::CreateImm(0));
3290 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
3292 ((ARMOperand*)Operands[4])->addPostIdxRegOperands(Inst, 2);
3294 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3298 /// cvtStExtTWriteBackImm - Convert parsed operands to MCInst.
3299 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3300 /// when they refer multiple MIOperands inside a single one.
3302 cvtStExtTWriteBackImm(MCInst &Inst, unsigned Opcode,
3303 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3304 // Create a writeback register dummy placeholder.
3305 Inst.addOperand(MCOperand::CreateImm(0));
3307 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3309 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
3311 ((ARMOperand*)Operands[4])->addPostIdxImm8Operands(Inst, 1);
3313 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3317 /// cvtStExtTWriteBackReg - Convert parsed operands to MCInst.
3318 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3319 /// when they refer multiple MIOperands inside a single one.
3321 cvtStExtTWriteBackReg(MCInst &Inst, unsigned Opcode,
3322 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3323 // Create a writeback register dummy placeholder.
3324 Inst.addOperand(MCOperand::CreateImm(0));
3326 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3328 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
3330 ((ARMOperand*)Operands[4])->addPostIdxRegOperands(Inst, 2);
3332 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3336 /// cvtLdrdPre - Convert parsed operands to MCInst.
3337 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3338 /// when they refer multiple MIOperands inside a single one.
3340 cvtLdrdPre(MCInst &Inst, unsigned Opcode,
3341 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3343 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3344 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3345 // Create a writeback register dummy placeholder.
3346 Inst.addOperand(MCOperand::CreateImm(0));
3348 ((ARMOperand*)Operands[4])->addAddrMode3Operands(Inst, 3);
3350 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3354 /// cvtStrdPre - Convert parsed operands to MCInst.
3355 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3356 /// when they refer multiple MIOperands inside a single one.
3358 cvtStrdPre(MCInst &Inst, unsigned Opcode,
3359 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3360 // Create a writeback register dummy placeholder.
3361 Inst.addOperand(MCOperand::CreateImm(0));
3363 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3364 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3366 ((ARMOperand*)Operands[4])->addAddrMode3Operands(Inst, 3);
3368 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3372 /// cvtLdWriteBackRegAddrMode3 - Convert parsed operands to MCInst.
3373 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3374 /// when they refer multiple MIOperands inside a single one.
3376 cvtLdWriteBackRegAddrMode3(MCInst &Inst, unsigned Opcode,
3377 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3378 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3379 // Create a writeback register dummy placeholder.
3380 Inst.addOperand(MCOperand::CreateImm(0));
3381 ((ARMOperand*)Operands[3])->addAddrMode3Operands(Inst, 3);
3382 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3386 /// cvtThumbMultiple- Convert parsed operands to MCInst.
3387 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3388 /// when they refer multiple MIOperands inside a single one.
3390 cvtThumbMultiply(MCInst &Inst, unsigned Opcode,
3391 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3392 // The second source operand must be the same register as the destination
3394 if (Operands.size() == 6 &&
3395 (((ARMOperand*)Operands[3])->getReg() !=
3396 ((ARMOperand*)Operands[5])->getReg()) &&
3397 (((ARMOperand*)Operands[3])->getReg() !=
3398 ((ARMOperand*)Operands[4])->getReg())) {
3399 Error(Operands[3]->getStartLoc(),
3400 "destination register must match source register");
3403 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3404 ((ARMOperand*)Operands[1])->addCCOutOperands(Inst, 1);
3405 ((ARMOperand*)Operands[4])->addRegOperands(Inst, 1);
3406 // If we have a three-operand form, use that, else the second source operand
3407 // is just the destination operand again.
3408 if (Operands.size() == 6)
3409 ((ARMOperand*)Operands[5])->addRegOperands(Inst, 1);
3411 Inst.addOperand(Inst.getOperand(0));
3412 ((ARMOperand*)Operands[2])->addCondCodeOperands(Inst, 2);
3418 cvtVLDwbFixed(MCInst &Inst, unsigned Opcode,
3419 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3421 ((ARMOperand*)Operands[3])->addVecListTwoDOperands(Inst, 1);
3422 // Create a writeback register dummy placeholder.
3423 Inst.addOperand(MCOperand::CreateImm(0));
3425 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
3427 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3432 cvtVLDwbRegister(MCInst &Inst, unsigned Opcode,
3433 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3435 ((ARMOperand*)Operands[3])->addVecListTwoDOperands(Inst, 1);
3436 // Create a writeback register dummy placeholder.
3437 Inst.addOperand(MCOperand::CreateImm(0));
3439 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
3441 ((ARMOperand*)Operands[5])->addRegOperands(Inst, 1);
3443 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3448 cvtVSTwbFixed(MCInst &Inst, unsigned Opcode,
3449 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3450 // Create a writeback register dummy placeholder.
3451 Inst.addOperand(MCOperand::CreateImm(0));
3453 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
3455 ((ARMOperand*)Operands[3])->addVecListTwoDOperands(Inst, 1);
3457 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3462 cvtVSTwbRegister(MCInst &Inst, unsigned Opcode,
3463 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3464 // Create a writeback register dummy placeholder.
3465 Inst.addOperand(MCOperand::CreateImm(0));
3467 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
3469 ((ARMOperand*)Operands[5])->addRegOperands(Inst, 1);
3471 ((ARMOperand*)Operands[3])->addVecListTwoDOperands(Inst, 1);
3473 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3477 /// Parse an ARM memory expression, return false if successful else return true
3478 /// or an error. The first token must be a '[' when called.
3480 parseMemory(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3482 assert(Parser.getTok().is(AsmToken::LBrac) &&
3483 "Token is not a Left Bracket");
3484 S = Parser.getTok().getLoc();
3485 Parser.Lex(); // Eat left bracket token.
3487 const AsmToken &BaseRegTok = Parser.getTok();
3488 int BaseRegNum = tryParseRegister();
3489 if (BaseRegNum == -1)
3490 return Error(BaseRegTok.getLoc(), "register expected");
3492 // The next token must either be a comma or a closing bracket.
3493 const AsmToken &Tok = Parser.getTok();
3494 if (!Tok.is(AsmToken::Comma) && !Tok.is(AsmToken::RBrac))
3495 return Error(Tok.getLoc(), "malformed memory operand");
3497 if (Tok.is(AsmToken::RBrac)) {
3499 Parser.Lex(); // Eat right bracket token.
3501 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, 0, 0, ARM_AM::no_shift,
3502 0, 0, false, S, E));
3504 // If there's a pre-indexing writeback marker, '!', just add it as a token
3505 // operand. It's rather odd, but syntactically valid.
3506 if (Parser.getTok().is(AsmToken::Exclaim)) {
3507 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
3508 Parser.Lex(); // Eat the '!'.
3514 assert(Tok.is(AsmToken::Comma) && "Lost comma in memory operand?!");
3515 Parser.Lex(); // Eat the comma.
3517 // If we have a ':', it's an alignment specifier.
3518 if (Parser.getTok().is(AsmToken::Colon)) {
3519 Parser.Lex(); // Eat the ':'.
3520 E = Parser.getTok().getLoc();
3523 if (getParser().ParseExpression(Expr))
3526 // The expression has to be a constant. Memory references with relocations
3527 // don't come through here, as they use the <label> forms of the relevant
3529 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
3531 return Error (E, "constant expression expected");
3534 switch (CE->getValue()) {
3536 return Error(E, "alignment specifier must be 64, 128, or 256 bits");
3537 case 64: Align = 8; break;
3538 case 128: Align = 16; break;
3539 case 256: Align = 32; break;
3542 // Now we should have the closing ']'
3543 E = Parser.getTok().getLoc();
3544 if (Parser.getTok().isNot(AsmToken::RBrac))
3545 return Error(E, "']' expected");
3546 Parser.Lex(); // Eat right bracket token.
3548 // Don't worry about range checking the value here. That's handled by
3549 // the is*() predicates.
3550 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, 0, 0,
3551 ARM_AM::no_shift, 0, Align,
3554 // If there's a pre-indexing writeback marker, '!', just add it as a token
3556 if (Parser.getTok().is(AsmToken::Exclaim)) {
3557 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
3558 Parser.Lex(); // Eat the '!'.
3564 // If we have a '#', it's an immediate offset, else assume it's a register
3566 if (Parser.getTok().is(AsmToken::Hash)) {
3567 Parser.Lex(); // Eat the '#'.
3568 E = Parser.getTok().getLoc();
3570 bool isNegative = getParser().getTok().is(AsmToken::Minus);
3571 const MCExpr *Offset;
3572 if (getParser().ParseExpression(Offset))
3575 // The expression has to be a constant. Memory references with relocations
3576 // don't come through here, as they use the <label> forms of the relevant
3578 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Offset);
3580 return Error (E, "constant expression expected");
3582 // If the constant was #-0, represent it as INT32_MIN.
3583 int32_t Val = CE->getValue();
3584 if (isNegative && Val == 0)
3585 CE = MCConstantExpr::Create(INT32_MIN, getContext());
3587 // Now we should have the closing ']'
3588 E = Parser.getTok().getLoc();
3589 if (Parser.getTok().isNot(AsmToken::RBrac))
3590 return Error(E, "']' expected");
3591 Parser.Lex(); // Eat right bracket token.
3593 // Don't worry about range checking the value here. That's handled by
3594 // the is*() predicates.
3595 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, CE, 0,
3596 ARM_AM::no_shift, 0, 0,
3599 // If there's a pre-indexing writeback marker, '!', just add it as a token
3601 if (Parser.getTok().is(AsmToken::Exclaim)) {
3602 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
3603 Parser.Lex(); // Eat the '!'.
3609 // The register offset is optionally preceded by a '+' or '-'
3610 bool isNegative = false;
3611 if (Parser.getTok().is(AsmToken::Minus)) {
3613 Parser.Lex(); // Eat the '-'.
3614 } else if (Parser.getTok().is(AsmToken::Plus)) {
3616 Parser.Lex(); // Eat the '+'.
3619 E = Parser.getTok().getLoc();
3620 int OffsetRegNum = tryParseRegister();
3621 if (OffsetRegNum == -1)
3622 return Error(E, "register expected");
3624 // If there's a shift operator, handle it.
3625 ARM_AM::ShiftOpc ShiftType = ARM_AM::no_shift;
3626 unsigned ShiftImm = 0;
3627 if (Parser.getTok().is(AsmToken::Comma)) {
3628 Parser.Lex(); // Eat the ','.
3629 if (parseMemRegOffsetShift(ShiftType, ShiftImm))
3633 // Now we should have the closing ']'
3634 E = Parser.getTok().getLoc();
3635 if (Parser.getTok().isNot(AsmToken::RBrac))
3636 return Error(E, "']' expected");
3637 Parser.Lex(); // Eat right bracket token.
3639 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, 0, OffsetRegNum,
3640 ShiftType, ShiftImm, 0, isNegative,
3643 // If there's a pre-indexing writeback marker, '!', just add it as a token
3645 if (Parser.getTok().is(AsmToken::Exclaim)) {
3646 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
3647 Parser.Lex(); // Eat the '!'.
3653 /// parseMemRegOffsetShift - one of these two:
3654 /// ( lsl | lsr | asr | ror ) , # shift_amount
3656 /// return true if it parses a shift otherwise it returns false.
3657 bool ARMAsmParser::parseMemRegOffsetShift(ARM_AM::ShiftOpc &St,
3659 SMLoc Loc = Parser.getTok().getLoc();
3660 const AsmToken &Tok = Parser.getTok();
3661 if (Tok.isNot(AsmToken::Identifier))
3663 StringRef ShiftName = Tok.getString();
3664 if (ShiftName == "lsl" || ShiftName == "LSL")
3666 else if (ShiftName == "lsr" || ShiftName == "LSR")
3668 else if (ShiftName == "asr" || ShiftName == "ASR")
3670 else if (ShiftName == "ror" || ShiftName == "ROR")
3672 else if (ShiftName == "rrx" || ShiftName == "RRX")
3675 return Error(Loc, "illegal shift operator");
3676 Parser.Lex(); // Eat shift type token.
3678 // rrx stands alone.
3680 if (St != ARM_AM::rrx) {
3681 Loc = Parser.getTok().getLoc();
3682 // A '#' and a shift amount.
3683 const AsmToken &HashTok = Parser.getTok();
3684 if (HashTok.isNot(AsmToken::Hash))
3685 return Error(HashTok.getLoc(), "'#' expected");
3686 Parser.Lex(); // Eat hash token.
3689 if (getParser().ParseExpression(Expr))
3691 // Range check the immediate.
3692 // lsl, ror: 0 <= imm <= 31
3693 // lsr, asr: 0 <= imm <= 32
3694 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
3696 return Error(Loc, "shift amount must be an immediate");
3697 int64_t Imm = CE->getValue();
3699 ((St == ARM_AM::lsl || St == ARM_AM::ror) && Imm > 31) ||
3700 ((St == ARM_AM::lsr || St == ARM_AM::asr) && Imm > 32))
3701 return Error(Loc, "immediate shift value out of range");
3708 /// parseFPImm - A floating point immediate expression operand.
3709 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3710 parseFPImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3711 SMLoc S = Parser.getTok().getLoc();
3713 if (Parser.getTok().isNot(AsmToken::Hash))
3714 return MatchOperand_NoMatch;
3716 // Disambiguate the VMOV forms that can accept an FP immediate.
3717 // vmov.f32 <sreg>, #imm
3718 // vmov.f64 <dreg>, #imm
3719 // vmov.f32 <dreg>, #imm @ vector f32x2
3720 // vmov.f32 <qreg>, #imm @ vector f32x4
3722 // There are also the NEON VMOV instructions which expect an
3723 // integer constant. Make sure we don't try to parse an FPImm
3725 // vmov.i{8|16|32|64} <dreg|qreg>, #imm
3726 ARMOperand *TyOp = static_cast<ARMOperand*>(Operands[2]);
3727 if (!TyOp->isToken() || (TyOp->getToken() != ".f32" &&
3728 TyOp->getToken() != ".f64"))
3729 return MatchOperand_NoMatch;
3731 Parser.Lex(); // Eat the '#'.
3733 // Handle negation, as that still comes through as a separate token.
3734 bool isNegative = false;
3735 if (Parser.getTok().is(AsmToken::Minus)) {
3739 const AsmToken &Tok = Parser.getTok();
3740 if (Tok.is(AsmToken::Real)) {
3741 APFloat RealVal(APFloat::IEEEdouble, Tok.getString());
3742 uint64_t IntVal = RealVal.bitcastToAPInt().getZExtValue();
3743 // If we had a '-' in front, toggle the sign bit.
3744 IntVal ^= (uint64_t)isNegative << 63;
3745 int Val = ARM_AM::getFP64Imm(APInt(64, IntVal));
3746 Parser.Lex(); // Eat the token.
3748 TokError("floating point value out of range");
3749 return MatchOperand_ParseFail;
3751 Operands.push_back(ARMOperand::CreateFPImm(Val, S, getContext()));
3752 return MatchOperand_Success;
3754 if (Tok.is(AsmToken::Integer)) {
3755 int64_t Val = Tok.getIntVal();
3756 Parser.Lex(); // Eat the token.
3757 if (Val > 255 || Val < 0) {
3758 TokError("encoded floating point value out of range");
3759 return MatchOperand_ParseFail;
3761 Operands.push_back(ARMOperand::CreateFPImm(Val, S, getContext()));
3762 return MatchOperand_Success;
3765 TokError("invalid floating point immediate");
3766 return MatchOperand_ParseFail;
3768 /// Parse a arm instruction operand. For now this parses the operand regardless
3769 /// of the mnemonic.
3770 bool ARMAsmParser::parseOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands,
3771 StringRef Mnemonic) {
3774 // Check if the current operand has a custom associated parser, if so, try to
3775 // custom parse the operand, or fallback to the general approach.
3776 OperandMatchResultTy ResTy = MatchOperandParserImpl(Operands, Mnemonic);
3777 if (ResTy == MatchOperand_Success)
3779 // If there wasn't a custom match, try the generic matcher below. Otherwise,
3780 // there was a match, but an error occurred, in which case, just return that
3781 // the operand parsing failed.
3782 if (ResTy == MatchOperand_ParseFail)
3785 switch (getLexer().getKind()) {
3787 Error(Parser.getTok().getLoc(), "unexpected token in operand");
3789 case AsmToken::Identifier: {
3790 // If this is VMRS, check for the apsr_nzcv operand.
3791 if (!tryParseRegisterWithWriteBack(Operands))
3793 int Res = tryParseShiftRegister(Operands);
3794 if (Res == 0) // success
3796 else if (Res == -1) // irrecoverable error
3798 if (Mnemonic == "vmrs" && Parser.getTok().getString() == "apsr_nzcv") {
3799 S = Parser.getTok().getLoc();
3801 Operands.push_back(ARMOperand::CreateToken("apsr_nzcv", S));
3805 // Fall though for the Identifier case that is not a register or a
3808 case AsmToken::LParen: // parenthesized expressions like (_strcmp-4)
3809 case AsmToken::Integer: // things like 1f and 2b as a branch targets
3810 case AsmToken::String: // quoted label names.
3811 case AsmToken::Dot: { // . as a branch target
3812 // This was not a register so parse other operands that start with an
3813 // identifier (like labels) as expressions and create them as immediates.
3814 const MCExpr *IdVal;
3815 S = Parser.getTok().getLoc();
3816 if (getParser().ParseExpression(IdVal))
3818 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
3819 Operands.push_back(ARMOperand::CreateImm(IdVal, S, E));
3822 case AsmToken::LBrac:
3823 return parseMemory(Operands);
3824 case AsmToken::LCurly:
3825 return parseRegisterList(Operands);
3826 case AsmToken::Hash: {
3827 // #42 -> immediate.
3828 // TODO: ":lower16:" and ":upper16:" modifiers after # before immediate
3829 S = Parser.getTok().getLoc();
3831 bool isNegative = Parser.getTok().is(AsmToken::Minus);
3832 const MCExpr *ImmVal;
3833 if (getParser().ParseExpression(ImmVal))
3835 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ImmVal);
3837 int32_t Val = CE->getValue();
3838 if (isNegative && Val == 0)
3839 ImmVal = MCConstantExpr::Create(INT32_MIN, getContext());
3841 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
3842 Operands.push_back(ARMOperand::CreateImm(ImmVal, S, E));
3845 case AsmToken::Colon: {
3846 // ":lower16:" and ":upper16:" expression prefixes
3847 // FIXME: Check it's an expression prefix,
3848 // e.g. (FOO - :lower16:BAR) isn't legal.
3849 ARMMCExpr::VariantKind RefKind;
3850 if (parsePrefix(RefKind))
3853 const MCExpr *SubExprVal;
3854 if (getParser().ParseExpression(SubExprVal))
3857 const MCExpr *ExprVal = ARMMCExpr::Create(RefKind, SubExprVal,
3859 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
3860 Operands.push_back(ARMOperand::CreateImm(ExprVal, S, E));
3866 // parsePrefix - Parse ARM 16-bit relocations expression prefix, i.e.
3867 // :lower16: and :upper16:.
3868 bool ARMAsmParser::parsePrefix(ARMMCExpr::VariantKind &RefKind) {
3869 RefKind = ARMMCExpr::VK_ARM_None;
3871 // :lower16: and :upper16: modifiers
3872 assert(getLexer().is(AsmToken::Colon) && "expected a :");
3873 Parser.Lex(); // Eat ':'
3875 if (getLexer().isNot(AsmToken::Identifier)) {
3876 Error(Parser.getTok().getLoc(), "expected prefix identifier in operand");
3880 StringRef IDVal = Parser.getTok().getIdentifier();
3881 if (IDVal == "lower16") {
3882 RefKind = ARMMCExpr::VK_ARM_LO16;
3883 } else if (IDVal == "upper16") {
3884 RefKind = ARMMCExpr::VK_ARM_HI16;
3886 Error(Parser.getTok().getLoc(), "unexpected prefix in operand");
3891 if (getLexer().isNot(AsmToken::Colon)) {
3892 Error(Parser.getTok().getLoc(), "unexpected token after prefix");
3895 Parser.Lex(); // Eat the last ':'
3899 /// \brief Given a mnemonic, split out possible predication code and carry
3900 /// setting letters to form a canonical mnemonic and flags.
3902 // FIXME: Would be nice to autogen this.
3903 // FIXME: This is a bit of a maze of special cases.
3904 StringRef ARMAsmParser::splitMnemonic(StringRef Mnemonic,
3905 unsigned &PredicationCode,
3907 unsigned &ProcessorIMod,
3908 StringRef &ITMask) {
3909 PredicationCode = ARMCC::AL;
3910 CarrySetting = false;
3913 // Ignore some mnemonics we know aren't predicated forms.
3915 // FIXME: Would be nice to autogen this.
3916 if ((Mnemonic == "movs" && isThumb()) ||
3917 Mnemonic == "teq" || Mnemonic == "vceq" || Mnemonic == "svc" ||
3918 Mnemonic == "mls" || Mnemonic == "smmls" || Mnemonic == "vcls" ||
3919 Mnemonic == "vmls" || Mnemonic == "vnmls" || Mnemonic == "vacge" ||
3920 Mnemonic == "vcge" || Mnemonic == "vclt" || Mnemonic == "vacgt" ||
3921 Mnemonic == "vcgt" || Mnemonic == "vcle" || Mnemonic == "smlal" ||
3922 Mnemonic == "umaal" || Mnemonic == "umlal" || Mnemonic == "vabal" ||
3923 Mnemonic == "vmlal" || Mnemonic == "vpadal" || Mnemonic == "vqdmlal")
3926 // First, split out any predication code. Ignore mnemonics we know aren't
3927 // predicated but do have a carry-set and so weren't caught above.
3928 if (Mnemonic != "adcs" && Mnemonic != "bics" && Mnemonic != "movs" &&
3929 Mnemonic != "muls" && Mnemonic != "smlals" && Mnemonic != "smulls" &&
3930 Mnemonic != "umlals" && Mnemonic != "umulls" && Mnemonic != "lsls" &&
3931 Mnemonic != "sbcs" && Mnemonic != "rscs") {
3932 unsigned CC = StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2))
3933 .Case("eq", ARMCC::EQ)
3934 .Case("ne", ARMCC::NE)
3935 .Case("hs", ARMCC::HS)
3936 .Case("cs", ARMCC::HS)
3937 .Case("lo", ARMCC::LO)
3938 .Case("cc", ARMCC::LO)
3939 .Case("mi", ARMCC::MI)
3940 .Case("pl", ARMCC::PL)
3941 .Case("vs", ARMCC::VS)
3942 .Case("vc", ARMCC::VC)
3943 .Case("hi", ARMCC::HI)
3944 .Case("ls", ARMCC::LS)
3945 .Case("ge", ARMCC::GE)
3946 .Case("lt", ARMCC::LT)
3947 .Case("gt", ARMCC::GT)
3948 .Case("le", ARMCC::LE)
3949 .Case("al", ARMCC::AL)
3952 Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 2);
3953 PredicationCode = CC;
3957 // Next, determine if we have a carry setting bit. We explicitly ignore all
3958 // the instructions we know end in 's'.
3959 if (Mnemonic.endswith("s") &&
3960 !(Mnemonic == "cps" || Mnemonic == "mls" ||
3961 Mnemonic == "mrs" || Mnemonic == "smmls" || Mnemonic == "vabs" ||
3962 Mnemonic == "vcls" || Mnemonic == "vmls" || Mnemonic == "vmrs" ||
3963 Mnemonic == "vnmls" || Mnemonic == "vqabs" || Mnemonic == "vrecps" ||
3964 Mnemonic == "vrsqrts" || Mnemonic == "srs" ||
3965 (Mnemonic == "movs" && isThumb()))) {
3966 Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 1);
3967 CarrySetting = true;
3970 // The "cps" instruction can have a interrupt mode operand which is glued into
3971 // the mnemonic. Check if this is the case, split it and parse the imod op
3972 if (Mnemonic.startswith("cps")) {
3973 // Split out any imod code.
3975 StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2, 2))
3976 .Case("ie", ARM_PROC::IE)
3977 .Case("id", ARM_PROC::ID)
3980 Mnemonic = Mnemonic.slice(0, Mnemonic.size()-2);
3981 ProcessorIMod = IMod;
3985 // The "it" instruction has the condition mask on the end of the mnemonic.
3986 if (Mnemonic.startswith("it")) {
3987 ITMask = Mnemonic.slice(2, Mnemonic.size());
3988 Mnemonic = Mnemonic.slice(0, 2);
3994 /// \brief Given a canonical mnemonic, determine if the instruction ever allows
3995 /// inclusion of carry set or predication code operands.
3997 // FIXME: It would be nice to autogen this.
3999 getMnemonicAcceptInfo(StringRef Mnemonic, bool &CanAcceptCarrySet,
4000 bool &CanAcceptPredicationCode) {
4001 if (Mnemonic == "and" || Mnemonic == "lsl" || Mnemonic == "lsr" ||
4002 Mnemonic == "rrx" || Mnemonic == "ror" || Mnemonic == "sub" ||
4003 Mnemonic == "add" || Mnemonic == "adc" ||
4004 Mnemonic == "mul" || Mnemonic == "bic" || Mnemonic == "asr" ||
4005 Mnemonic == "orr" || Mnemonic == "mvn" ||
4006 Mnemonic == "rsb" || Mnemonic == "rsc" || Mnemonic == "orn" ||
4007 Mnemonic == "sbc" || Mnemonic == "eor" || Mnemonic == "neg" ||
4008 (!isThumb() && (Mnemonic == "smull" || Mnemonic == "mov" ||
4009 Mnemonic == "mla" || Mnemonic == "smlal" ||
4010 Mnemonic == "umlal" || Mnemonic == "umull"))) {
4011 CanAcceptCarrySet = true;
4013 CanAcceptCarrySet = false;
4015 if (Mnemonic == "cbnz" || Mnemonic == "setend" || Mnemonic == "dmb" ||
4016 Mnemonic == "cps" || Mnemonic == "mcr2" || Mnemonic == "it" ||
4017 Mnemonic == "mcrr2" || Mnemonic == "cbz" || Mnemonic == "cdp2" ||
4018 Mnemonic == "trap" || Mnemonic == "mrc2" || Mnemonic == "mrrc2" ||
4019 Mnemonic == "dsb" || Mnemonic == "isb" || Mnemonic == "setend" ||
4020 (Mnemonic == "clrex" && !isThumb()) ||
4021 (Mnemonic == "nop" && isThumbOne()) ||
4022 ((Mnemonic == "pld" || Mnemonic == "pli" || Mnemonic == "pldw" ||
4023 Mnemonic == "ldc2" || Mnemonic == "ldc2l" ||
4024 Mnemonic == "stc2" || Mnemonic == "stc2l") && !isThumb()) ||
4025 ((Mnemonic.startswith("rfe") || Mnemonic.startswith("srs")) &&
4027 Mnemonic.startswith("cps") || (Mnemonic == "movs" && isThumbOne())) {
4028 CanAcceptPredicationCode = false;
4030 CanAcceptPredicationCode = true;
4033 if (Mnemonic == "bkpt" || Mnemonic == "mcr" || Mnemonic == "mcrr" ||
4034 Mnemonic == "mrc" || Mnemonic == "mrrc" || Mnemonic == "cdp")
4035 CanAcceptPredicationCode = false;
4039 bool ARMAsmParser::shouldOmitCCOutOperand(StringRef Mnemonic,
4040 SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4041 // FIXME: This is all horribly hacky. We really need a better way to deal
4042 // with optional operands like this in the matcher table.
4044 // The 'mov' mnemonic is special. One variant has a cc_out operand, while
4045 // another does not. Specifically, the MOVW instruction does not. So we
4046 // special case it here and remove the defaulted (non-setting) cc_out
4047 // operand if that's the instruction we're trying to match.
4049 // We do this as post-processing of the explicit operands rather than just
4050 // conditionally adding the cc_out in the first place because we need
4051 // to check the type of the parsed immediate operand.
4052 if (Mnemonic == "mov" && Operands.size() > 4 && !isThumb() &&
4053 !static_cast<ARMOperand*>(Operands[4])->isARMSOImm() &&
4054 static_cast<ARMOperand*>(Operands[4])->isImm0_65535Expr() &&
4055 static_cast<ARMOperand*>(Operands[1])->getReg() == 0)
4058 // Register-register 'add' for thumb does not have a cc_out operand
4059 // when there are only two register operands.
4060 if (isThumb() && Mnemonic == "add" && Operands.size() == 5 &&
4061 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4062 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4063 static_cast<ARMOperand*>(Operands[1])->getReg() == 0)
4065 // Register-register 'add' for thumb does not have a cc_out operand
4066 // when it's an ADD Rdm, SP, {Rdm|#imm0_255} instruction. We do
4067 // have to check the immediate range here since Thumb2 has a variant
4068 // that can handle a different range and has a cc_out operand.
4069 if (((isThumb() && Mnemonic == "add") ||
4070 (isThumbTwo() && Mnemonic == "sub")) &&
4071 Operands.size() == 6 &&
4072 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4073 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4074 static_cast<ARMOperand*>(Operands[4])->getReg() == ARM::SP &&
4075 static_cast<ARMOperand*>(Operands[1])->getReg() == 0 &&
4076 (static_cast<ARMOperand*>(Operands[5])->isReg() ||
4077 static_cast<ARMOperand*>(Operands[5])->isImm0_1020s4()))
4079 // For Thumb2, add/sub immediate does not have a cc_out operand for the
4080 // imm0_4095 variant. That's the least-preferred variant when
4081 // selecting via the generic "add" mnemonic, so to know that we
4082 // should remove the cc_out operand, we have to explicitly check that
4083 // it's not one of the other variants. Ugh.
4084 if (isThumbTwo() && (Mnemonic == "add" || Mnemonic == "sub") &&
4085 Operands.size() == 6 &&
4086 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4087 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4088 static_cast<ARMOperand*>(Operands[5])->isImm()) {
4089 // Nest conditions rather than one big 'if' statement for readability.
4091 // If either register is a high reg, it's either one of the SP
4092 // variants (handled above) or a 32-bit encoding, so we just
4093 // check against T3.
4094 if ((!isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) ||
4095 !isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg())) &&
4096 static_cast<ARMOperand*>(Operands[5])->isT2SOImm())
4098 // If both registers are low, we're in an IT block, and the immediate is
4099 // in range, we should use encoding T1 instead, which has a cc_out.
4101 isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) &&
4102 isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()) &&
4103 static_cast<ARMOperand*>(Operands[5])->isImm0_7())
4106 // Otherwise, we use encoding T4, which does not have a cc_out
4111 // The thumb2 multiply instruction doesn't have a CCOut register, so
4112 // if we have a "mul" mnemonic in Thumb mode, check if we'll be able to
4113 // use the 16-bit encoding or not.
4114 if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 6 &&
4115 static_cast<ARMOperand*>(Operands[1])->getReg() == 0 &&
4116 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4117 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4118 static_cast<ARMOperand*>(Operands[5])->isReg() &&
4119 // If the registers aren't low regs, the destination reg isn't the
4120 // same as one of the source regs, or the cc_out operand is zero
4121 // outside of an IT block, we have to use the 32-bit encoding, so
4122 // remove the cc_out operand.
4123 (!isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) ||
4124 !isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()) ||
4126 (static_cast<ARMOperand*>(Operands[3])->getReg() !=
4127 static_cast<ARMOperand*>(Operands[5])->getReg() &&
4128 static_cast<ARMOperand*>(Operands[3])->getReg() !=
4129 static_cast<ARMOperand*>(Operands[4])->getReg())))
4134 // Register-register 'add/sub' for thumb does not have a cc_out operand
4135 // when it's an ADD/SUB SP, #imm. Be lenient on count since there's also
4136 // the "add/sub SP, SP, #imm" version. If the follow-up operands aren't
4137 // right, this will result in better diagnostics (which operand is off)
4139 if (isThumb() && (Mnemonic == "add" || Mnemonic == "sub") &&
4140 (Operands.size() == 5 || Operands.size() == 6) &&
4141 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4142 static_cast<ARMOperand*>(Operands[3])->getReg() == ARM::SP &&
4143 static_cast<ARMOperand*>(Operands[1])->getReg() == 0)
4149 /// Parse an arm instruction mnemonic followed by its operands.
4150 bool ARMAsmParser::ParseInstruction(StringRef Name, SMLoc NameLoc,
4151 SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4152 // Create the leading tokens for the mnemonic, split by '.' characters.
4153 size_t Start = 0, Next = Name.find('.');
4154 StringRef Mnemonic = Name.slice(Start, Next);
4156 // Split out the predication code and carry setting flag from the mnemonic.
4157 unsigned PredicationCode;
4158 unsigned ProcessorIMod;
4161 Mnemonic = splitMnemonic(Mnemonic, PredicationCode, CarrySetting,
4162 ProcessorIMod, ITMask);
4164 // In Thumb1, only the branch (B) instruction can be predicated.
4165 if (isThumbOne() && PredicationCode != ARMCC::AL && Mnemonic != "b") {
4166 Parser.EatToEndOfStatement();
4167 return Error(NameLoc, "conditional execution not supported in Thumb1");
4170 Operands.push_back(ARMOperand::CreateToken(Mnemonic, NameLoc));
4172 // Handle the IT instruction ITMask. Convert it to a bitmask. This
4173 // is the mask as it will be for the IT encoding if the conditional
4174 // encoding has a '1' as it's bit0 (i.e. 't' ==> '1'). In the case
4175 // where the conditional bit0 is zero, the instruction post-processing
4176 // will adjust the mask accordingly.
4177 if (Mnemonic == "it") {
4178 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + 2);
4179 if (ITMask.size() > 3) {
4180 Parser.EatToEndOfStatement();
4181 return Error(Loc, "too many conditions on IT instruction");
4184 for (unsigned i = ITMask.size(); i != 0; --i) {
4185 char pos = ITMask[i - 1];
4186 if (pos != 't' && pos != 'e') {
4187 Parser.EatToEndOfStatement();
4188 return Error(Loc, "illegal IT block condition mask '" + ITMask + "'");
4191 if (ITMask[i - 1] == 't')
4194 Operands.push_back(ARMOperand::CreateITMask(Mask, Loc));
4197 // FIXME: This is all a pretty gross hack. We should automatically handle
4198 // optional operands like this via tblgen.
4200 // Next, add the CCOut and ConditionCode operands, if needed.
4202 // For mnemonics which can ever incorporate a carry setting bit or predication
4203 // code, our matching model involves us always generating CCOut and
4204 // ConditionCode operands to match the mnemonic "as written" and then we let
4205 // the matcher deal with finding the right instruction or generating an
4206 // appropriate error.
4207 bool CanAcceptCarrySet, CanAcceptPredicationCode;
4208 getMnemonicAcceptInfo(Mnemonic, CanAcceptCarrySet, CanAcceptPredicationCode);
4210 // If we had a carry-set on an instruction that can't do that, issue an
4212 if (!CanAcceptCarrySet && CarrySetting) {
4213 Parser.EatToEndOfStatement();
4214 return Error(NameLoc, "instruction '" + Mnemonic +
4215 "' can not set flags, but 's' suffix specified");
4217 // If we had a predication code on an instruction that can't do that, issue an
4219 if (!CanAcceptPredicationCode && PredicationCode != ARMCC::AL) {
4220 Parser.EatToEndOfStatement();
4221 return Error(NameLoc, "instruction '" + Mnemonic +
4222 "' is not predicable, but condition code specified");
4225 // Add the carry setting operand, if necessary.
4226 if (CanAcceptCarrySet) {
4227 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size());
4228 Operands.push_back(ARMOperand::CreateCCOut(CarrySetting ? ARM::CPSR : 0,
4232 // Add the predication code operand, if necessary.
4233 if (CanAcceptPredicationCode) {
4234 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size() +
4236 Operands.push_back(ARMOperand::CreateCondCode(
4237 ARMCC::CondCodes(PredicationCode), Loc));
4240 // Add the processor imod operand, if necessary.
4241 if (ProcessorIMod) {
4242 Operands.push_back(ARMOperand::CreateImm(
4243 MCConstantExpr::Create(ProcessorIMod, getContext()),
4247 // Add the remaining tokens in the mnemonic.
4248 while (Next != StringRef::npos) {
4250 Next = Name.find('.', Start + 1);
4251 StringRef ExtraToken = Name.slice(Start, Next);
4253 // For now, we're only parsing Thumb1 (for the most part), so
4254 // just ignore ".n" qualifiers. We'll use them to restrict
4255 // matching when we do Thumb2.
4256 if (ExtraToken != ".n") {
4257 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Start);
4258 Operands.push_back(ARMOperand::CreateToken(ExtraToken, Loc));
4262 // Read the remaining operands.
4263 if (getLexer().isNot(AsmToken::EndOfStatement)) {
4264 // Read the first operand.
4265 if (parseOperand(Operands, Mnemonic)) {
4266 Parser.EatToEndOfStatement();
4270 while (getLexer().is(AsmToken::Comma)) {
4271 Parser.Lex(); // Eat the comma.
4273 // Parse and remember the operand.
4274 if (parseOperand(Operands, Mnemonic)) {
4275 Parser.EatToEndOfStatement();
4281 if (getLexer().isNot(AsmToken::EndOfStatement)) {
4282 SMLoc Loc = getLexer().getLoc();
4283 Parser.EatToEndOfStatement();
4284 return Error(Loc, "unexpected token in argument list");
4287 Parser.Lex(); // Consume the EndOfStatement
4289 // Some instructions, mostly Thumb, have forms for the same mnemonic that
4290 // do and don't have a cc_out optional-def operand. With some spot-checks
4291 // of the operand list, we can figure out which variant we're trying to
4292 // parse and adjust accordingly before actually matching. We shouldn't ever
4293 // try to remove a cc_out operand that was explicitly set on the the
4294 // mnemonic, of course (CarrySetting == true). Reason number #317 the
4295 // table driven matcher doesn't fit well with the ARM instruction set.
4296 if (!CarrySetting && shouldOmitCCOutOperand(Mnemonic, Operands)) {
4297 ARMOperand *Op = static_cast<ARMOperand*>(Operands[1]);
4298 Operands.erase(Operands.begin() + 1);
4302 // ARM mode 'blx' need special handling, as the register operand version
4303 // is predicable, but the label operand version is not. So, we can't rely
4304 // on the Mnemonic based checking to correctly figure out when to put
4305 // a k_CondCode operand in the list. If we're trying to match the label
4306 // version, remove the k_CondCode operand here.
4307 if (!isThumb() && Mnemonic == "blx" && Operands.size() == 3 &&
4308 static_cast<ARMOperand*>(Operands[2])->isImm()) {
4309 ARMOperand *Op = static_cast<ARMOperand*>(Operands[1]);
4310 Operands.erase(Operands.begin() + 1);
4314 // The vector-compare-to-zero instructions have a literal token "#0" at
4315 // the end that comes to here as an immediate operand. Convert it to a
4316 // token to play nicely with the matcher.
4317 if ((Mnemonic == "vceq" || Mnemonic == "vcge" || Mnemonic == "vcgt" ||
4318 Mnemonic == "vcle" || Mnemonic == "vclt") && Operands.size() == 6 &&
4319 static_cast<ARMOperand*>(Operands[5])->isImm()) {
4320 ARMOperand *Op = static_cast<ARMOperand*>(Operands[5]);
4321 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op->getImm());
4322 if (CE && CE->getValue() == 0) {
4323 Operands.erase(Operands.begin() + 5);
4324 Operands.push_back(ARMOperand::CreateToken("#0", Op->getStartLoc()));
4328 // VCMP{E} does the same thing, but with a different operand count.
4329 if ((Mnemonic == "vcmp" || Mnemonic == "vcmpe") && Operands.size() == 5 &&
4330 static_cast<ARMOperand*>(Operands[4])->isImm()) {
4331 ARMOperand *Op = static_cast<ARMOperand*>(Operands[4]);
4332 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op->getImm());
4333 if (CE && CE->getValue() == 0) {
4334 Operands.erase(Operands.begin() + 4);
4335 Operands.push_back(ARMOperand::CreateToken("#0", Op->getStartLoc()));
4339 // Similarly, the Thumb1 "RSB" instruction has a literal "#0" on the
4340 // end. Convert it to a token here.
4341 if (Mnemonic == "rsb" && isThumb() && Operands.size() == 6 &&
4342 static_cast<ARMOperand*>(Operands[5])->isImm()) {
4343 ARMOperand *Op = static_cast<ARMOperand*>(Operands[5]);
4344 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op->getImm());
4345 if (CE && CE->getValue() == 0) {
4346 Operands.erase(Operands.begin() + 5);
4347 Operands.push_back(ARMOperand::CreateToken("#0", Op->getStartLoc()));
4355 // Validate context-sensitive operand constraints.
4357 // return 'true' if register list contains non-low GPR registers,
4358 // 'false' otherwise. If Reg is in the register list or is HiReg, set
4359 // 'containsReg' to true.
4360 static bool checkLowRegisterList(MCInst Inst, unsigned OpNo, unsigned Reg,
4361 unsigned HiReg, bool &containsReg) {
4362 containsReg = false;
4363 for (unsigned i = OpNo; i < Inst.getNumOperands(); ++i) {
4364 unsigned OpReg = Inst.getOperand(i).getReg();
4367 // Anything other than a low register isn't legal here.
4368 if (!isARMLowRegister(OpReg) && (!HiReg || OpReg != HiReg))
4374 // Check if the specified regisgter is in the register list of the inst,
4375 // starting at the indicated operand number.
4376 static bool listContainsReg(MCInst &Inst, unsigned OpNo, unsigned Reg) {
4377 for (unsigned i = OpNo; i < Inst.getNumOperands(); ++i) {
4378 unsigned OpReg = Inst.getOperand(i).getReg();
4385 // FIXME: We would really prefer to have MCInstrInfo (the wrapper around
4386 // the ARMInsts array) instead. Getting that here requires awkward
4387 // API changes, though. Better way?
4389 extern const MCInstrDesc ARMInsts[];
4391 static const MCInstrDesc &getInstDesc(unsigned Opcode) {
4392 return ARMInsts[Opcode];
4395 // FIXME: We would really like to be able to tablegen'erate this.
4397 validateInstruction(MCInst &Inst,
4398 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4399 const MCInstrDesc &MCID = getInstDesc(Inst.getOpcode());
4400 SMLoc Loc = Operands[0]->getStartLoc();
4401 // Check the IT block state first.
4402 // NOTE: In Thumb mode, the BKPT instruction has the interesting property of
4403 // being allowed in IT blocks, but not being predicable. It just always
4405 if (inITBlock() && Inst.getOpcode() != ARM::tBKPT) {
4407 if (ITState.FirstCond)
4408 ITState.FirstCond = false;
4410 bit = (ITState.Mask >> (5 - ITState.CurPosition)) & 1;
4411 // The instruction must be predicable.
4412 if (!MCID.isPredicable())
4413 return Error(Loc, "instructions in IT block must be predicable");
4414 unsigned Cond = Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm();
4415 unsigned ITCond = bit ? ITState.Cond :
4416 ARMCC::getOppositeCondition(ITState.Cond);
4417 if (Cond != ITCond) {
4418 // Find the condition code Operand to get its SMLoc information.
4420 for (unsigned i = 1; i < Operands.size(); ++i)
4421 if (static_cast<ARMOperand*>(Operands[i])->isCondCode())
4422 CondLoc = Operands[i]->getStartLoc();
4423 return Error(CondLoc, "incorrect condition in IT block; got '" +
4424 StringRef(ARMCondCodeToString(ARMCC::CondCodes(Cond))) +
4425 "', but expected '" +
4426 ARMCondCodeToString(ARMCC::CondCodes(ITCond)) + "'");
4428 // Check for non-'al' condition codes outside of the IT block.
4429 } else if (isThumbTwo() && MCID.isPredicable() &&
4430 Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm() !=
4431 ARMCC::AL && Inst.getOpcode() != ARM::tB &&
4432 Inst.getOpcode() != ARM::t2B)
4433 return Error(Loc, "predicated instructions must be in IT block");
4435 switch (Inst.getOpcode()) {
4438 case ARM::LDRD_POST:
4440 // Rt2 must be Rt + 1.
4441 unsigned Rt = getARMRegisterNumbering(Inst.getOperand(0).getReg());
4442 unsigned Rt2 = getARMRegisterNumbering(Inst.getOperand(1).getReg());
4444 return Error(Operands[3]->getStartLoc(),
4445 "destination operands must be sequential");
4449 // Rt2 must be Rt + 1.
4450 unsigned Rt = getARMRegisterNumbering(Inst.getOperand(0).getReg());
4451 unsigned Rt2 = getARMRegisterNumbering(Inst.getOperand(1).getReg());
4453 return Error(Operands[3]->getStartLoc(),
4454 "source operands must be sequential");
4458 case ARM::STRD_POST:
4460 // Rt2 must be Rt + 1.
4461 unsigned Rt = getARMRegisterNumbering(Inst.getOperand(1).getReg());
4462 unsigned Rt2 = getARMRegisterNumbering(Inst.getOperand(2).getReg());
4464 return Error(Operands[3]->getStartLoc(),
4465 "source operands must be sequential");
4470 // width must be in range [1, 32-lsb]
4471 unsigned lsb = Inst.getOperand(2).getImm();
4472 unsigned widthm1 = Inst.getOperand(3).getImm();
4473 if (widthm1 >= 32 - lsb)
4474 return Error(Operands[5]->getStartLoc(),
4475 "bitfield width must be in range [1,32-lsb]");
4479 // If we're parsing Thumb2, the .w variant is available and handles
4480 // most cases that are normally illegal for a Thumb1 LDM
4481 // instruction. We'll make the transformation in processInstruction()
4484 // Thumb LDM instructions are writeback iff the base register is not
4485 // in the register list.
4486 unsigned Rn = Inst.getOperand(0).getReg();
4487 bool hasWritebackToken =
4488 (static_cast<ARMOperand*>(Operands[3])->isToken() &&
4489 static_cast<ARMOperand*>(Operands[3])->getToken() == "!");
4490 bool listContainsBase;
4491 if (checkLowRegisterList(Inst, 3, Rn, 0, listContainsBase) && !isThumbTwo())
4492 return Error(Operands[3 + hasWritebackToken]->getStartLoc(),
4493 "registers must be in range r0-r7");
4494 // If we should have writeback, then there should be a '!' token.
4495 if (!listContainsBase && !hasWritebackToken && !isThumbTwo())
4496 return Error(Operands[2]->getStartLoc(),
4497 "writeback operator '!' expected");
4498 // If we should not have writeback, there must not be a '!'. This is
4499 // true even for the 32-bit wide encodings.
4500 if (listContainsBase && hasWritebackToken)
4501 return Error(Operands[3]->getStartLoc(),
4502 "writeback operator '!' not allowed when base register "
4503 "in register list");
4507 case ARM::t2LDMIA_UPD: {
4508 if (listContainsReg(Inst, 3, Inst.getOperand(0).getReg()))
4509 return Error(Operands[4]->getStartLoc(),
4510 "writeback operator '!' not allowed when base register "
4511 "in register list");
4515 bool listContainsBase;
4516 if (checkLowRegisterList(Inst, 3, 0, ARM::PC, listContainsBase))
4517 return Error(Operands[2]->getStartLoc(),
4518 "registers must be in range r0-r7 or pc");
4522 bool listContainsBase;
4523 if (checkLowRegisterList(Inst, 3, 0, ARM::LR, listContainsBase))
4524 return Error(Operands[2]->getStartLoc(),
4525 "registers must be in range r0-r7 or lr");
4528 case ARM::tSTMIA_UPD: {
4529 bool listContainsBase;
4530 if (checkLowRegisterList(Inst, 4, 0, 0, listContainsBase) && !isThumbTwo())
4531 return Error(Operands[4]->getStartLoc(),
4532 "registers must be in range r0-r7");
4541 processInstruction(MCInst &Inst,
4542 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4543 switch (Inst.getOpcode()) {
4544 // Handle the MOV complex aliases.
4546 unsigned Amt = Inst.getOperand(2).getImm() + 1;
4547 unsigned ShiftOp = ARM_AM::getSORegOpc(ARM_AM::asr, Amt);
4549 TmpInst.setOpcode(ARM::MOVsi);
4550 TmpInst.addOperand(Inst.getOperand(0)); // Rd
4551 TmpInst.addOperand(Inst.getOperand(1)); // Rn
4552 TmpInst.addOperand(MCOperand::CreateImm(ShiftOp)); // Shift value and ty
4553 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
4554 TmpInst.addOperand(Inst.getOperand(4));
4555 TmpInst.addOperand(Inst.getOperand(5)); // cc_out
4559 case ARM::LDMIA_UPD:
4560 // If this is a load of a single register via a 'pop', then we should use
4561 // a post-indexed LDR instruction instead, per the ARM ARM.
4562 if (static_cast<ARMOperand*>(Operands[0])->getToken() == "pop" &&
4563 Inst.getNumOperands() == 5) {
4565 TmpInst.setOpcode(ARM::LDR_POST_IMM);
4566 TmpInst.addOperand(Inst.getOperand(4)); // Rt
4567 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
4568 TmpInst.addOperand(Inst.getOperand(1)); // Rn
4569 TmpInst.addOperand(MCOperand::CreateReg(0)); // am2offset
4570 TmpInst.addOperand(MCOperand::CreateImm(4));
4571 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
4572 TmpInst.addOperand(Inst.getOperand(3));
4576 case ARM::STMDB_UPD:
4577 // If this is a store of a single register via a 'push', then we should use
4578 // a pre-indexed STR instruction instead, per the ARM ARM.
4579 if (static_cast<ARMOperand*>(Operands[0])->getToken() == "push" &&
4580 Inst.getNumOperands() == 5) {
4582 TmpInst.setOpcode(ARM::STR_PRE_IMM);
4583 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
4584 TmpInst.addOperand(Inst.getOperand(4)); // Rt
4585 TmpInst.addOperand(Inst.getOperand(1)); // addrmode_imm12
4586 TmpInst.addOperand(MCOperand::CreateImm(-4));
4587 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
4588 TmpInst.addOperand(Inst.getOperand(3));
4593 // If the immediate is in the range 0-7, we want tADDi3 iff Rd was
4594 // explicitly specified. From the ARM ARM: "Encoding T1 is preferred
4595 // to encoding T2 if <Rd> is specified and encoding T2 is preferred
4596 // to encoding T1 if <Rd> is omitted."
4597 if (Inst.getOperand(3).getImm() < 8 && Operands.size() == 6)
4598 Inst.setOpcode(ARM::tADDi3);
4601 // If the immediate is in the range 0-7, we want tADDi3 iff Rd was
4602 // explicitly specified. From the ARM ARM: "Encoding T1 is preferred
4603 // to encoding T2 if <Rd> is specified and encoding T2 is preferred
4604 // to encoding T1 if <Rd> is omitted."
4605 if (Inst.getOperand(3).getImm() < 8 && Operands.size() == 6)
4606 Inst.setOpcode(ARM::tSUBi3);
4609 // A Thumb conditional branch outside of an IT block is a tBcc.
4610 if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock())
4611 Inst.setOpcode(ARM::tBcc);
4614 // A Thumb2 conditional branch outside of an IT block is a t2Bcc.
4615 if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock())
4616 Inst.setOpcode(ARM::t2Bcc);
4619 // If the conditional is AL or we're in an IT block, we really want t2B.
4620 if (Inst.getOperand(1).getImm() == ARMCC::AL || inITBlock())
4621 Inst.setOpcode(ARM::t2B);
4624 // If the conditional is AL, we really want tB.
4625 if (Inst.getOperand(1).getImm() == ARMCC::AL)
4626 Inst.setOpcode(ARM::tB);
4629 // If the register list contains any high registers, or if the writeback
4630 // doesn't match what tLDMIA can do, we need to use the 32-bit encoding
4631 // instead if we're in Thumb2. Otherwise, this should have generated
4632 // an error in validateInstruction().
4633 unsigned Rn = Inst.getOperand(0).getReg();
4634 bool hasWritebackToken =
4635 (static_cast<ARMOperand*>(Operands[3])->isToken() &&
4636 static_cast<ARMOperand*>(Operands[3])->getToken() == "!");
4637 bool listContainsBase;
4638 if (checkLowRegisterList(Inst, 3, Rn, 0, listContainsBase) ||
4639 (!listContainsBase && !hasWritebackToken) ||
4640 (listContainsBase && hasWritebackToken)) {
4641 // 16-bit encoding isn't sufficient. Switch to the 32-bit version.
4642 assert (isThumbTwo());
4643 Inst.setOpcode(hasWritebackToken ? ARM::t2LDMIA_UPD : ARM::t2LDMIA);
4644 // If we're switching to the updating version, we need to insert
4645 // the writeback tied operand.
4646 if (hasWritebackToken)
4647 Inst.insert(Inst.begin(),
4648 MCOperand::CreateReg(Inst.getOperand(0).getReg()));
4652 case ARM::tSTMIA_UPD: {
4653 // If the register list contains any high registers, we need to use
4654 // the 32-bit encoding instead if we're in Thumb2. Otherwise, this
4655 // should have generated an error in validateInstruction().
4656 unsigned Rn = Inst.getOperand(0).getReg();
4657 bool listContainsBase;
4658 if (checkLowRegisterList(Inst, 4, Rn, 0, listContainsBase)) {
4659 // 16-bit encoding isn't sufficient. Switch to the 32-bit version.
4660 assert (isThumbTwo());
4661 Inst.setOpcode(ARM::t2STMIA_UPD);
4666 // If we can use the 16-bit encoding and the user didn't explicitly
4667 // request the 32-bit variant, transform it here.
4668 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
4669 Inst.getOperand(1).getImm() <= 255 &&
4670 ((!inITBlock() && Inst.getOperand(2).getImm() == ARMCC::AL &&
4671 Inst.getOperand(4).getReg() == ARM::CPSR) ||
4672 (inITBlock() && Inst.getOperand(4).getReg() == 0)) &&
4673 (!static_cast<ARMOperand*>(Operands[2])->isToken() ||
4674 static_cast<ARMOperand*>(Operands[2])->getToken() != ".w")) {
4675 // The operands aren't in the same order for tMOVi8...
4677 TmpInst.setOpcode(ARM::tMOVi8);
4678 TmpInst.addOperand(Inst.getOperand(0));
4679 TmpInst.addOperand(Inst.getOperand(4));
4680 TmpInst.addOperand(Inst.getOperand(1));
4681 TmpInst.addOperand(Inst.getOperand(2));
4682 TmpInst.addOperand(Inst.getOperand(3));
4688 // If we can use the 16-bit encoding and the user didn't explicitly
4689 // request the 32-bit variant, transform it here.
4690 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
4691 isARMLowRegister(Inst.getOperand(1).getReg()) &&
4692 Inst.getOperand(2).getImm() == ARMCC::AL &&
4693 Inst.getOperand(4).getReg() == ARM::CPSR &&
4694 (!static_cast<ARMOperand*>(Operands[2])->isToken() ||
4695 static_cast<ARMOperand*>(Operands[2])->getToken() != ".w")) {
4696 // The operands aren't the same for tMOV[S]r... (no cc_out)
4698 TmpInst.setOpcode(Inst.getOperand(4).getReg() ? ARM::tMOVSr : ARM::tMOVr);
4699 TmpInst.addOperand(Inst.getOperand(0));
4700 TmpInst.addOperand(Inst.getOperand(1));
4701 TmpInst.addOperand(Inst.getOperand(2));
4702 TmpInst.addOperand(Inst.getOperand(3));
4711 // If we can use the 16-bit encoding and the user didn't explicitly
4712 // request the 32-bit variant, transform it here.
4713 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
4714 isARMLowRegister(Inst.getOperand(1).getReg()) &&
4715 Inst.getOperand(2).getImm() == 0 &&
4716 (!static_cast<ARMOperand*>(Operands[2])->isToken() ||
4717 static_cast<ARMOperand*>(Operands[2])->getToken() != ".w")) {
4719 switch (Inst.getOpcode()) {
4720 default: llvm_unreachable("Illegal opcode!");
4721 case ARM::t2SXTH: NewOpc = ARM::tSXTH; break;
4722 case ARM::t2SXTB: NewOpc = ARM::tSXTB; break;
4723 case ARM::t2UXTH: NewOpc = ARM::tUXTH; break;
4724 case ARM::t2UXTB: NewOpc = ARM::tUXTB; break;
4726 // The operands aren't the same for thumb1 (no rotate operand).
4728 TmpInst.setOpcode(NewOpc);
4729 TmpInst.addOperand(Inst.getOperand(0));
4730 TmpInst.addOperand(Inst.getOperand(1));
4731 TmpInst.addOperand(Inst.getOperand(3));
4732 TmpInst.addOperand(Inst.getOperand(4));
4738 // The mask bits for all but the first condition are represented as
4739 // the low bit of the condition code value implies 't'. We currently
4740 // always have 1 implies 't', so XOR toggle the bits if the low bit
4741 // of the condition code is zero. The encoding also expects the low
4742 // bit of the condition to be encoded as bit 4 of the mask operand,
4743 // so mask that in if needed
4744 MCOperand &MO = Inst.getOperand(1);
4745 unsigned Mask = MO.getImm();
4746 unsigned OrigMask = Mask;
4747 unsigned TZ = CountTrailingZeros_32(Mask);
4748 if ((Inst.getOperand(0).getImm() & 1) == 0) {
4749 assert(Mask && TZ <= 3 && "illegal IT mask value!");
4750 for (unsigned i = 3; i != TZ; --i)
4756 // Set up the IT block state according to the IT instruction we just
4758 assert(!inITBlock() && "nested IT blocks?!");
4759 ITState.Cond = ARMCC::CondCodes(Inst.getOperand(0).getImm());
4760 ITState.Mask = OrigMask; // Use the original mask, not the updated one.
4761 ITState.CurPosition = 0;
4762 ITState.FirstCond = true;
4768 unsigned ARMAsmParser::checkTargetMatchPredicate(MCInst &Inst) {
4769 // 16-bit thumb arithmetic instructions either require or preclude the 'S'
4770 // suffix depending on whether they're in an IT block or not.
4771 unsigned Opc = Inst.getOpcode();
4772 const MCInstrDesc &MCID = getInstDesc(Opc);
4773 if (MCID.TSFlags & ARMII::ThumbArithFlagSetting) {
4774 assert(MCID.hasOptionalDef() &&
4775 "optionally flag setting instruction missing optional def operand");
4776 assert(MCID.NumOperands == Inst.getNumOperands() &&
4777 "operand count mismatch!");
4778 // Find the optional-def operand (cc_out).
4781 !MCID.OpInfo[OpNo].isOptionalDef() && OpNo < MCID.NumOperands;
4784 // If we're parsing Thumb1, reject it completely.
4785 if (isThumbOne() && Inst.getOperand(OpNo).getReg() != ARM::CPSR)
4786 return Match_MnemonicFail;
4787 // If we're parsing Thumb2, which form is legal depends on whether we're
4789 if (isThumbTwo() && Inst.getOperand(OpNo).getReg() != ARM::CPSR &&
4791 return Match_RequiresITBlock;
4792 if (isThumbTwo() && Inst.getOperand(OpNo).getReg() == ARM::CPSR &&
4794 return Match_RequiresNotITBlock;
4796 // Some high-register supporting Thumb1 encodings only allow both registers
4797 // to be from r0-r7 when in Thumb2.
4798 else if (Opc == ARM::tADDhirr && isThumbOne() &&
4799 isARMLowRegister(Inst.getOperand(1).getReg()) &&
4800 isARMLowRegister(Inst.getOperand(2).getReg()))
4801 return Match_RequiresThumb2;
4802 // Others only require ARMv6 or later.
4803 else if (Opc == ARM::tMOVr && isThumbOne() && !hasV6Ops() &&
4804 isARMLowRegister(Inst.getOperand(0).getReg()) &&
4805 isARMLowRegister(Inst.getOperand(1).getReg()))
4806 return Match_RequiresV6;
4807 return Match_Success;
4811 MatchAndEmitInstruction(SMLoc IDLoc,
4812 SmallVectorImpl<MCParsedAsmOperand*> &Operands,
4816 unsigned MatchResult;
4817 MatchResult = MatchInstructionImpl(Operands, Inst, ErrorInfo);
4818 switch (MatchResult) {
4821 // Context sensitive operand constraints aren't handled by the matcher,
4822 // so check them here.
4823 if (validateInstruction(Inst, Operands)) {
4824 // Still progress the IT block, otherwise one wrong condition causes
4825 // nasty cascading errors.
4826 forwardITPosition();
4830 // Some instructions need post-processing to, for example, tweak which
4831 // encoding is selected.
4832 processInstruction(Inst, Operands);
4834 // Only move forward at the very end so that everything in validate
4835 // and process gets a consistent answer about whether we're in an IT
4837 forwardITPosition();
4839 Out.EmitInstruction(Inst);
4841 case Match_MissingFeature:
4842 Error(IDLoc, "instruction requires a CPU feature not currently enabled");
4844 case Match_InvalidOperand: {
4845 SMLoc ErrorLoc = IDLoc;
4846 if (ErrorInfo != ~0U) {
4847 if (ErrorInfo >= Operands.size())
4848 return Error(IDLoc, "too few operands for instruction");
4850 ErrorLoc = ((ARMOperand*)Operands[ErrorInfo])->getStartLoc();
4851 if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
4854 return Error(ErrorLoc, "invalid operand for instruction");
4856 case Match_MnemonicFail:
4857 return Error(IDLoc, "invalid instruction");
4858 case Match_ConversionFail:
4859 // The converter function will have already emited a diagnostic.
4861 case Match_RequiresNotITBlock:
4862 return Error(IDLoc, "flag setting instruction only valid outside IT block");
4863 case Match_RequiresITBlock:
4864 return Error(IDLoc, "instruction only valid inside IT block");
4865 case Match_RequiresV6:
4866 return Error(IDLoc, "instruction variant requires ARMv6 or later");
4867 case Match_RequiresThumb2:
4868 return Error(IDLoc, "instruction variant requires Thumb2");
4871 llvm_unreachable("Implement any new match types added!");
4875 /// parseDirective parses the arm specific directives
4876 bool ARMAsmParser::ParseDirective(AsmToken DirectiveID) {
4877 StringRef IDVal = DirectiveID.getIdentifier();
4878 if (IDVal == ".word")
4879 return parseDirectiveWord(4, DirectiveID.getLoc());
4880 else if (IDVal == ".thumb")
4881 return parseDirectiveThumb(DirectiveID.getLoc());
4882 else if (IDVal == ".thumb_func")
4883 return parseDirectiveThumbFunc(DirectiveID.getLoc());
4884 else if (IDVal == ".code")
4885 return parseDirectiveCode(DirectiveID.getLoc());
4886 else if (IDVal == ".syntax")
4887 return parseDirectiveSyntax(DirectiveID.getLoc());
4891 /// parseDirectiveWord
4892 /// ::= .word [ expression (, expression)* ]
4893 bool ARMAsmParser::parseDirectiveWord(unsigned Size, SMLoc L) {
4894 if (getLexer().isNot(AsmToken::EndOfStatement)) {
4896 const MCExpr *Value;
4897 if (getParser().ParseExpression(Value))
4900 getParser().getStreamer().EmitValue(Value, Size, 0/*addrspace*/);
4902 if (getLexer().is(AsmToken::EndOfStatement))
4905 // FIXME: Improve diagnostic.
4906 if (getLexer().isNot(AsmToken::Comma))
4907 return Error(L, "unexpected token in directive");
4916 /// parseDirectiveThumb
4918 bool ARMAsmParser::parseDirectiveThumb(SMLoc L) {
4919 if (getLexer().isNot(AsmToken::EndOfStatement))
4920 return Error(L, "unexpected token in directive");
4923 // TODO: set thumb mode
4924 // TODO: tell the MC streamer the mode
4925 // getParser().getStreamer().Emit???();
4929 /// parseDirectiveThumbFunc
4930 /// ::= .thumbfunc symbol_name
4931 bool ARMAsmParser::parseDirectiveThumbFunc(SMLoc L) {
4932 const MCAsmInfo &MAI = getParser().getStreamer().getContext().getAsmInfo();
4933 bool isMachO = MAI.hasSubsectionsViaSymbols();
4936 // Darwin asm has function name after .thumb_func direction
4939 const AsmToken &Tok = Parser.getTok();
4940 if (Tok.isNot(AsmToken::Identifier) && Tok.isNot(AsmToken::String))
4941 return Error(L, "unexpected token in .thumb_func directive");
4942 Name = Tok.getString();
4943 Parser.Lex(); // Consume the identifier token.
4946 if (getLexer().isNot(AsmToken::EndOfStatement))
4947 return Error(L, "unexpected token in directive");
4950 // FIXME: assuming function name will be the line following .thumb_func
4952 Name = Parser.getTok().getString();
4955 // Mark symbol as a thumb symbol.
4956 MCSymbol *Func = getParser().getContext().GetOrCreateSymbol(Name);
4957 getParser().getStreamer().EmitThumbFunc(Func);
4961 /// parseDirectiveSyntax
4962 /// ::= .syntax unified | divided
4963 bool ARMAsmParser::parseDirectiveSyntax(SMLoc L) {
4964 const AsmToken &Tok = Parser.getTok();
4965 if (Tok.isNot(AsmToken::Identifier))
4966 return Error(L, "unexpected token in .syntax directive");
4967 StringRef Mode = Tok.getString();
4968 if (Mode == "unified" || Mode == "UNIFIED")
4970 else if (Mode == "divided" || Mode == "DIVIDED")
4971 return Error(L, "'.syntax divided' arm asssembly not supported");
4973 return Error(L, "unrecognized syntax mode in .syntax directive");
4975 if (getLexer().isNot(AsmToken::EndOfStatement))
4976 return Error(Parser.getTok().getLoc(), "unexpected token in directive");
4979 // TODO tell the MC streamer the mode
4980 // getParser().getStreamer().Emit???();
4984 /// parseDirectiveCode
4985 /// ::= .code 16 | 32
4986 bool ARMAsmParser::parseDirectiveCode(SMLoc L) {
4987 const AsmToken &Tok = Parser.getTok();
4988 if (Tok.isNot(AsmToken::Integer))
4989 return Error(L, "unexpected token in .code directive");
4990 int64_t Val = Parser.getTok().getIntVal();
4996 return Error(L, "invalid operand to .code directive");
4998 if (getLexer().isNot(AsmToken::EndOfStatement))
4999 return Error(Parser.getTok().getLoc(), "unexpected token in directive");
5005 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
5009 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
5015 extern "C" void LLVMInitializeARMAsmLexer();
5017 /// Force static initialization.
5018 extern "C" void LLVMInitializeARMAsmParser() {
5019 RegisterMCAsmParser<ARMAsmParser> X(TheARMTarget);
5020 RegisterMCAsmParser<ARMAsmParser> Y(TheThumbTarget);
5021 LLVMInitializeARMAsmLexer();
5024 #define GET_REGISTER_MATCHER
5025 #define GET_MATCHER_IMPLEMENTATION
5026 #include "ARMGenAsmMatcher.inc"