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 enum VectorLaneTy { NoLanes, AllLanes, IndexedLane };
44 class ARMAsmParser : public MCTargetAsmParser {
48 // Map of register aliases registers via the .req directive.
49 StringMap<unsigned> RegisterReqs;
52 ARMCC::CondCodes Cond; // Condition for IT block.
53 unsigned Mask:4; // Condition mask for instructions.
54 // Starting at first 1 (from lsb).
55 // '1' condition as indicated in IT.
56 // '0' inverse of condition (else).
57 // Count of instructions in IT block is
58 // 4 - trailingzeroes(mask)
60 bool FirstCond; // Explicit flag for when we're parsing the
61 // First instruction in the IT block. It's
62 // implied in the mask, so needs special
65 unsigned CurPosition; // Current position in parsing of IT
66 // block. In range [0,3]. Initialized
67 // according to count of instructions in block.
68 // ~0U if no active IT block.
70 bool inITBlock() { return ITState.CurPosition != ~0U;}
71 void forwardITPosition() {
72 if (!inITBlock()) return;
73 // Move to the next instruction in the IT block, if there is one. If not,
74 // mark the block as done.
75 unsigned TZ = CountTrailingZeros_32(ITState.Mask);
76 if (++ITState.CurPosition == 5 - TZ)
77 ITState.CurPosition = ~0U; // Done with the IT block after this.
81 MCAsmParser &getParser() const { return Parser; }
82 MCAsmLexer &getLexer() const { return Parser.getLexer(); }
84 void Warning(SMLoc L, const Twine &Msg) { Parser.Warning(L, Msg); }
85 bool Error(SMLoc L, const Twine &Msg) { return Parser.Error(L, Msg); }
87 int tryParseRegister();
88 bool tryParseRegisterWithWriteBack(SmallVectorImpl<MCParsedAsmOperand*> &);
89 int tryParseShiftRegister(SmallVectorImpl<MCParsedAsmOperand*> &);
90 bool parseRegisterList(SmallVectorImpl<MCParsedAsmOperand*> &);
91 bool parseMemory(SmallVectorImpl<MCParsedAsmOperand*> &);
92 bool parseOperand(SmallVectorImpl<MCParsedAsmOperand*> &, StringRef Mnemonic);
93 bool parsePrefix(ARMMCExpr::VariantKind &RefKind);
94 bool parseMemRegOffsetShift(ARM_AM::ShiftOpc &ShiftType,
95 unsigned &ShiftAmount);
96 bool parseDirectiveWord(unsigned Size, SMLoc L);
97 bool parseDirectiveThumb(SMLoc L);
98 bool parseDirectiveARM(SMLoc L);
99 bool parseDirectiveThumbFunc(SMLoc L);
100 bool parseDirectiveCode(SMLoc L);
101 bool parseDirectiveSyntax(SMLoc L);
102 bool parseDirectiveReq(StringRef Name, SMLoc L);
103 bool parseDirectiveUnreq(SMLoc L);
104 bool parseDirectiveArch(SMLoc L);
105 bool parseDirectiveEabiAttr(SMLoc L);
107 StringRef splitMnemonic(StringRef Mnemonic, unsigned &PredicationCode,
108 bool &CarrySetting, unsigned &ProcessorIMod,
110 void getMnemonicAcceptInfo(StringRef Mnemonic, bool &CanAcceptCarrySet,
111 bool &CanAcceptPredicationCode);
113 bool isThumb() const {
114 // FIXME: Can tablegen auto-generate this?
115 return (STI.getFeatureBits() & ARM::ModeThumb) != 0;
117 bool isThumbOne() const {
118 return isThumb() && (STI.getFeatureBits() & ARM::FeatureThumb2) == 0;
120 bool isThumbTwo() const {
121 return isThumb() && (STI.getFeatureBits() & ARM::FeatureThumb2);
123 bool hasV6Ops() const {
124 return STI.getFeatureBits() & ARM::HasV6Ops;
126 bool hasV7Ops() const {
127 return STI.getFeatureBits() & ARM::HasV7Ops;
130 unsigned FB = ComputeAvailableFeatures(STI.ToggleFeature(ARM::ModeThumb));
131 setAvailableFeatures(FB);
133 bool isMClass() const {
134 return STI.getFeatureBits() & ARM::FeatureMClass;
137 /// @name Auto-generated Match Functions
140 #define GET_ASSEMBLER_HEADER
141 #include "ARMGenAsmMatcher.inc"
145 OperandMatchResultTy parseITCondCode(SmallVectorImpl<MCParsedAsmOperand*>&);
146 OperandMatchResultTy parseCoprocNumOperand(
147 SmallVectorImpl<MCParsedAsmOperand*>&);
148 OperandMatchResultTy parseCoprocRegOperand(
149 SmallVectorImpl<MCParsedAsmOperand*>&);
150 OperandMatchResultTy parseCoprocOptionOperand(
151 SmallVectorImpl<MCParsedAsmOperand*>&);
152 OperandMatchResultTy parseMemBarrierOptOperand(
153 SmallVectorImpl<MCParsedAsmOperand*>&);
154 OperandMatchResultTy parseProcIFlagsOperand(
155 SmallVectorImpl<MCParsedAsmOperand*>&);
156 OperandMatchResultTy parseMSRMaskOperand(
157 SmallVectorImpl<MCParsedAsmOperand*>&);
158 OperandMatchResultTy parsePKHImm(SmallVectorImpl<MCParsedAsmOperand*> &O,
159 StringRef Op, int Low, int High);
160 OperandMatchResultTy parsePKHLSLImm(SmallVectorImpl<MCParsedAsmOperand*> &O) {
161 return parsePKHImm(O, "lsl", 0, 31);
163 OperandMatchResultTy parsePKHASRImm(SmallVectorImpl<MCParsedAsmOperand*> &O) {
164 return parsePKHImm(O, "asr", 1, 32);
166 OperandMatchResultTy parseSetEndImm(SmallVectorImpl<MCParsedAsmOperand*>&);
167 OperandMatchResultTy parseShifterImm(SmallVectorImpl<MCParsedAsmOperand*>&);
168 OperandMatchResultTy parseRotImm(SmallVectorImpl<MCParsedAsmOperand*>&);
169 OperandMatchResultTy parseBitfield(SmallVectorImpl<MCParsedAsmOperand*>&);
170 OperandMatchResultTy parsePostIdxReg(SmallVectorImpl<MCParsedAsmOperand*>&);
171 OperandMatchResultTy parseAM3Offset(SmallVectorImpl<MCParsedAsmOperand*>&);
172 OperandMatchResultTy parseFPImm(SmallVectorImpl<MCParsedAsmOperand*>&);
173 OperandMatchResultTy parseVectorList(SmallVectorImpl<MCParsedAsmOperand*>&);
174 OperandMatchResultTy parseVectorLane(VectorLaneTy &LaneKind, unsigned &Index);
176 // Asm Match Converter Methods
177 bool cvtT2LdrdPre(MCInst &Inst, unsigned Opcode,
178 const SmallVectorImpl<MCParsedAsmOperand*> &);
179 bool cvtT2StrdPre(MCInst &Inst, unsigned Opcode,
180 const SmallVectorImpl<MCParsedAsmOperand*> &);
181 bool cvtLdWriteBackRegT2AddrModeImm8(MCInst &Inst, unsigned Opcode,
182 const SmallVectorImpl<MCParsedAsmOperand*> &);
183 bool cvtStWriteBackRegT2AddrModeImm8(MCInst &Inst, unsigned Opcode,
184 const SmallVectorImpl<MCParsedAsmOperand*> &);
185 bool cvtLdWriteBackRegAddrMode2(MCInst &Inst, unsigned Opcode,
186 const SmallVectorImpl<MCParsedAsmOperand*> &);
187 bool cvtLdWriteBackRegAddrModeImm12(MCInst &Inst, unsigned Opcode,
188 const SmallVectorImpl<MCParsedAsmOperand*> &);
189 bool cvtStWriteBackRegAddrModeImm12(MCInst &Inst, unsigned Opcode,
190 const SmallVectorImpl<MCParsedAsmOperand*> &);
191 bool cvtStWriteBackRegAddrMode2(MCInst &Inst, unsigned Opcode,
192 const SmallVectorImpl<MCParsedAsmOperand*> &);
193 bool cvtStWriteBackRegAddrMode3(MCInst &Inst, unsigned Opcode,
194 const SmallVectorImpl<MCParsedAsmOperand*> &);
195 bool cvtLdExtTWriteBackImm(MCInst &Inst, unsigned Opcode,
196 const SmallVectorImpl<MCParsedAsmOperand*> &);
197 bool cvtLdExtTWriteBackReg(MCInst &Inst, unsigned Opcode,
198 const SmallVectorImpl<MCParsedAsmOperand*> &);
199 bool cvtStExtTWriteBackImm(MCInst &Inst, unsigned Opcode,
200 const SmallVectorImpl<MCParsedAsmOperand*> &);
201 bool cvtStExtTWriteBackReg(MCInst &Inst, unsigned Opcode,
202 const SmallVectorImpl<MCParsedAsmOperand*> &);
203 bool cvtLdrdPre(MCInst &Inst, unsigned Opcode,
204 const SmallVectorImpl<MCParsedAsmOperand*> &);
205 bool cvtStrdPre(MCInst &Inst, unsigned Opcode,
206 const SmallVectorImpl<MCParsedAsmOperand*> &);
207 bool cvtLdWriteBackRegAddrMode3(MCInst &Inst, unsigned Opcode,
208 const SmallVectorImpl<MCParsedAsmOperand*> &);
209 bool cvtThumbMultiply(MCInst &Inst, unsigned Opcode,
210 const SmallVectorImpl<MCParsedAsmOperand*> &);
211 bool cvtVLDwbFixed(MCInst &Inst, unsigned Opcode,
212 const SmallVectorImpl<MCParsedAsmOperand*> &);
213 bool cvtVLDwbRegister(MCInst &Inst, unsigned Opcode,
214 const SmallVectorImpl<MCParsedAsmOperand*> &);
215 bool cvtVSTwbFixed(MCInst &Inst, unsigned Opcode,
216 const SmallVectorImpl<MCParsedAsmOperand*> &);
217 bool cvtVSTwbRegister(MCInst &Inst, unsigned Opcode,
218 const SmallVectorImpl<MCParsedAsmOperand*> &);
220 bool validateInstruction(MCInst &Inst,
221 const SmallVectorImpl<MCParsedAsmOperand*> &Ops);
222 bool processInstruction(MCInst &Inst,
223 const SmallVectorImpl<MCParsedAsmOperand*> &Ops);
224 bool shouldOmitCCOutOperand(StringRef Mnemonic,
225 SmallVectorImpl<MCParsedAsmOperand*> &Operands);
228 enum ARMMatchResultTy {
229 Match_RequiresITBlock = FIRST_TARGET_MATCH_RESULT_TY,
230 Match_RequiresNotITBlock,
235 ARMAsmParser(MCSubtargetInfo &_STI, MCAsmParser &_Parser)
236 : MCTargetAsmParser(), STI(_STI), Parser(_Parser) {
237 MCAsmParserExtension::Initialize(_Parser);
239 // Initialize the set of available features.
240 setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
242 // Not in an ITBlock to start with.
243 ITState.CurPosition = ~0U;
246 // Implementation of the MCTargetAsmParser interface:
247 bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc);
248 bool ParseInstruction(StringRef Name, SMLoc NameLoc,
249 SmallVectorImpl<MCParsedAsmOperand*> &Operands);
250 bool ParseDirective(AsmToken DirectiveID);
252 unsigned checkTargetMatchPredicate(MCInst &Inst);
254 bool MatchAndEmitInstruction(SMLoc IDLoc,
255 SmallVectorImpl<MCParsedAsmOperand*> &Operands,
258 } // end anonymous namespace
262 /// ARMOperand - Instances of this class represent a parsed ARM machine
264 class ARMOperand : public MCParsedAsmOperand {
285 k_VectorListAllLanes,
291 k_BitfieldDescriptor,
295 SMLoc StartLoc, EndLoc;
296 SmallVector<unsigned, 8> Registers;
300 ARMCC::CondCodes Val;
320 ARM_PROC::IFlags Val;
336 // A vector register list is a sequential list of 1 to 4 registers.
353 unsigned Val; // encoded 8-bit representation
356 /// Combined record for all forms of ARM address expressions.
359 // Offset is in OffsetReg or OffsetImm. If both are zero, no offset
361 const MCConstantExpr *OffsetImm; // Offset immediate value
362 unsigned OffsetRegNum; // Offset register num, when OffsetImm == NULL
363 ARM_AM::ShiftOpc ShiftType; // Shift type for OffsetReg
364 unsigned ShiftImm; // shift for OffsetReg.
365 unsigned Alignment; // 0 = no alignment specified
366 // n = alignment in bytes (2, 4, 8, 16, or 32)
367 unsigned isNegative : 1; // Negated OffsetReg? (~'U' bit)
373 ARM_AM::ShiftOpc ShiftTy;
382 ARM_AM::ShiftOpc ShiftTy;
388 ARM_AM::ShiftOpc ShiftTy;
401 ARMOperand(KindTy K) : MCParsedAsmOperand(), Kind(K) {}
403 ARMOperand(const ARMOperand &o) : MCParsedAsmOperand() {
405 StartLoc = o.StartLoc;
422 case k_DPRRegisterList:
423 case k_SPRRegisterList:
424 Registers = o.Registers;
427 case k_VectorListAllLanes:
428 case k_VectorListIndexed:
429 VectorList = o.VectorList;
436 CoprocOption = o.CoprocOption;
444 case k_MemBarrierOpt:
450 case k_PostIndexRegister:
451 PostIdxReg = o.PostIdxReg;
459 case k_ShifterImmediate:
460 ShifterImm = o.ShifterImm;
462 case k_ShiftedRegister:
463 RegShiftedReg = o.RegShiftedReg;
465 case k_ShiftedImmediate:
466 RegShiftedImm = o.RegShiftedImm;
468 case k_RotateImmediate:
471 case k_BitfieldDescriptor:
472 Bitfield = o.Bitfield;
475 VectorIndex = o.VectorIndex;
480 /// getStartLoc - Get the location of the first token of this operand.
481 SMLoc getStartLoc() const { return StartLoc; }
482 /// getEndLoc - Get the location of the last token of this operand.
483 SMLoc getEndLoc() const { return EndLoc; }
485 ARMCC::CondCodes getCondCode() const {
486 assert(Kind == k_CondCode && "Invalid access!");
490 unsigned getCoproc() const {
491 assert((Kind == k_CoprocNum || Kind == k_CoprocReg) && "Invalid access!");
495 StringRef getToken() const {
496 assert(Kind == k_Token && "Invalid access!");
497 return StringRef(Tok.Data, Tok.Length);
500 unsigned getReg() const {
501 assert((Kind == k_Register || Kind == k_CCOut) && "Invalid access!");
505 const SmallVectorImpl<unsigned> &getRegList() const {
506 assert((Kind == k_RegisterList || Kind == k_DPRRegisterList ||
507 Kind == k_SPRRegisterList) && "Invalid access!");
511 const MCExpr *getImm() const {
512 assert(Kind == k_Immediate && "Invalid access!");
516 unsigned getFPImm() const {
517 assert(Kind == k_FPImmediate && "Invalid access!");
521 unsigned getVectorIndex() const {
522 assert(Kind == k_VectorIndex && "Invalid access!");
523 return VectorIndex.Val;
526 ARM_MB::MemBOpt getMemBarrierOpt() const {
527 assert(Kind == k_MemBarrierOpt && "Invalid access!");
531 ARM_PROC::IFlags getProcIFlags() const {
532 assert(Kind == k_ProcIFlags && "Invalid access!");
536 unsigned getMSRMask() const {
537 assert(Kind == k_MSRMask && "Invalid access!");
541 bool isCoprocNum() const { return Kind == k_CoprocNum; }
542 bool isCoprocReg() const { return Kind == k_CoprocReg; }
543 bool isCoprocOption() const { return Kind == k_CoprocOption; }
544 bool isCondCode() const { return Kind == k_CondCode; }
545 bool isCCOut() const { return Kind == k_CCOut; }
546 bool isITMask() const { return Kind == k_ITCondMask; }
547 bool isITCondCode() const { return Kind == k_CondCode; }
548 bool isImm() const { return Kind == k_Immediate; }
549 bool isFPImm() const { return Kind == k_FPImmediate; }
550 bool isImm8s4() const {
551 if (Kind != k_Immediate)
553 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
554 if (!CE) return false;
555 int64_t Value = CE->getValue();
556 return ((Value & 3) == 0) && Value >= -1020 && Value <= 1020;
558 bool isImm0_1020s4() const {
559 if (Kind != k_Immediate)
561 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
562 if (!CE) return false;
563 int64_t Value = CE->getValue();
564 return ((Value & 3) == 0) && Value >= 0 && Value <= 1020;
566 bool isImm0_508s4() const {
567 if (Kind != k_Immediate)
569 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
570 if (!CE) return false;
571 int64_t Value = CE->getValue();
572 return ((Value & 3) == 0) && Value >= 0 && Value <= 508;
574 bool isImm0_255() const {
575 if (Kind != k_Immediate)
577 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
578 if (!CE) return false;
579 int64_t Value = CE->getValue();
580 return Value >= 0 && Value < 256;
582 bool isImm0_1() const {
583 if (Kind != k_Immediate)
585 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
586 if (!CE) return false;
587 int64_t Value = CE->getValue();
588 return Value >= 0 && Value < 2;
590 bool isImm0_3() const {
591 if (Kind != k_Immediate)
593 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
594 if (!CE) return false;
595 int64_t Value = CE->getValue();
596 return Value >= 0 && Value < 4;
598 bool isImm0_7() const {
599 if (Kind != k_Immediate)
601 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
602 if (!CE) return false;
603 int64_t Value = CE->getValue();
604 return Value >= 0 && Value < 8;
606 bool isImm0_15() const {
607 if (Kind != k_Immediate)
609 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
610 if (!CE) return false;
611 int64_t Value = CE->getValue();
612 return Value >= 0 && Value < 16;
614 bool isImm0_31() const {
615 if (Kind != k_Immediate)
617 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
618 if (!CE) return false;
619 int64_t Value = CE->getValue();
620 return Value >= 0 && Value < 32;
622 bool isImm0_63() const {
623 if (Kind != k_Immediate)
625 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
626 if (!CE) return false;
627 int64_t Value = CE->getValue();
628 return Value >= 0 && Value < 64;
630 bool isImm8() const {
631 if (Kind != k_Immediate)
633 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
634 if (!CE) return false;
635 int64_t Value = CE->getValue();
638 bool isImm16() const {
639 if (Kind != k_Immediate)
641 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
642 if (!CE) return false;
643 int64_t Value = CE->getValue();
646 bool isImm32() const {
647 if (Kind != k_Immediate)
649 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
650 if (!CE) return false;
651 int64_t Value = CE->getValue();
654 bool isShrImm8() const {
655 if (Kind != k_Immediate)
657 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
658 if (!CE) return false;
659 int64_t Value = CE->getValue();
660 return Value > 0 && Value <= 8;
662 bool isShrImm16() const {
663 if (Kind != k_Immediate)
665 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
666 if (!CE) return false;
667 int64_t Value = CE->getValue();
668 return Value > 0 && Value <= 16;
670 bool isShrImm32() const {
671 if (Kind != k_Immediate)
673 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
674 if (!CE) return false;
675 int64_t Value = CE->getValue();
676 return Value > 0 && Value <= 32;
678 bool isShrImm64() const {
679 if (Kind != k_Immediate)
681 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
682 if (!CE) return false;
683 int64_t Value = CE->getValue();
684 return Value > 0 && Value <= 64;
686 bool isImm1_7() const {
687 if (Kind != k_Immediate)
689 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
690 if (!CE) return false;
691 int64_t Value = CE->getValue();
692 return Value > 0 && Value < 8;
694 bool isImm1_15() const {
695 if (Kind != k_Immediate)
697 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
698 if (!CE) return false;
699 int64_t Value = CE->getValue();
700 return Value > 0 && Value < 16;
702 bool isImm1_31() const {
703 if (Kind != k_Immediate)
705 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
706 if (!CE) return false;
707 int64_t Value = CE->getValue();
708 return Value > 0 && Value < 32;
710 bool isImm1_16() const {
711 if (Kind != k_Immediate)
713 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
714 if (!CE) return false;
715 int64_t Value = CE->getValue();
716 return Value > 0 && Value < 17;
718 bool isImm1_32() const {
719 if (Kind != k_Immediate)
721 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
722 if (!CE) return false;
723 int64_t Value = CE->getValue();
724 return Value > 0 && Value < 33;
726 bool isImm0_32() const {
727 if (Kind != k_Immediate)
729 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
730 if (!CE) return false;
731 int64_t Value = CE->getValue();
732 return Value >= 0 && Value < 33;
734 bool isImm0_65535() const {
735 if (Kind != k_Immediate)
737 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
738 if (!CE) return false;
739 int64_t Value = CE->getValue();
740 return Value >= 0 && Value < 65536;
742 bool isImm0_65535Expr() const {
743 if (Kind != k_Immediate)
745 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
746 // If it's not a constant expression, it'll generate a fixup and be
748 if (!CE) return true;
749 int64_t Value = CE->getValue();
750 return Value >= 0 && Value < 65536;
752 bool isImm24bit() const {
753 if (Kind != k_Immediate)
755 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
756 if (!CE) return false;
757 int64_t Value = CE->getValue();
758 return Value >= 0 && Value <= 0xffffff;
760 bool isImmThumbSR() const {
761 if (Kind != k_Immediate)
763 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
764 if (!CE) return false;
765 int64_t Value = CE->getValue();
766 return Value > 0 && Value < 33;
768 bool isPKHLSLImm() const {
769 if (Kind != k_Immediate)
771 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
772 if (!CE) return false;
773 int64_t Value = CE->getValue();
774 return Value >= 0 && Value < 32;
776 bool isPKHASRImm() const {
777 if (Kind != k_Immediate)
779 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
780 if (!CE) return false;
781 int64_t Value = CE->getValue();
782 return Value > 0 && Value <= 32;
784 bool isARMSOImm() const {
785 if (Kind != k_Immediate)
787 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
788 if (!CE) return false;
789 int64_t Value = CE->getValue();
790 return ARM_AM::getSOImmVal(Value) != -1;
792 bool isARMSOImmNot() const {
793 if (Kind != k_Immediate)
795 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
796 if (!CE) return false;
797 int64_t Value = CE->getValue();
798 return ARM_AM::getSOImmVal(~Value) != -1;
800 bool isARMSOImmNeg() const {
801 if (Kind != k_Immediate)
803 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
804 if (!CE) return false;
805 int64_t Value = CE->getValue();
806 return ARM_AM::getSOImmVal(-Value) != -1;
808 bool isT2SOImm() const {
809 if (Kind != k_Immediate)
811 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
812 if (!CE) return false;
813 int64_t Value = CE->getValue();
814 return ARM_AM::getT2SOImmVal(Value) != -1;
816 bool isT2SOImmNot() const {
817 if (Kind != k_Immediate)
819 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
820 if (!CE) return false;
821 int64_t Value = CE->getValue();
822 return ARM_AM::getT2SOImmVal(~Value) != -1;
824 bool isT2SOImmNeg() const {
825 if (Kind != k_Immediate)
827 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
828 if (!CE) return false;
829 int64_t Value = CE->getValue();
830 return ARM_AM::getT2SOImmVal(-Value) != -1;
832 bool isSetEndImm() const {
833 if (Kind != k_Immediate)
835 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
836 if (!CE) return false;
837 int64_t Value = CE->getValue();
838 return Value == 1 || Value == 0;
840 bool isReg() const { return Kind == k_Register; }
841 bool isRegList() const { return Kind == k_RegisterList; }
842 bool isDPRRegList() const { return Kind == k_DPRRegisterList; }
843 bool isSPRRegList() const { return Kind == k_SPRRegisterList; }
844 bool isToken() const { return Kind == k_Token; }
845 bool isMemBarrierOpt() const { return Kind == k_MemBarrierOpt; }
846 bool isMemory() const { return Kind == k_Memory; }
847 bool isShifterImm() const { return Kind == k_ShifterImmediate; }
848 bool isRegShiftedReg() const { return Kind == k_ShiftedRegister; }
849 bool isRegShiftedImm() const { return Kind == k_ShiftedImmediate; }
850 bool isRotImm() const { return Kind == k_RotateImmediate; }
851 bool isBitfield() const { return Kind == k_BitfieldDescriptor; }
852 bool isPostIdxRegShifted() const { return Kind == k_PostIndexRegister; }
853 bool isPostIdxReg() const {
854 return Kind == k_PostIndexRegister && PostIdxReg.ShiftTy ==ARM_AM::no_shift;
856 bool isMemNoOffset(bool alignOK = false) const {
859 // No offset of any kind.
860 return Memory.OffsetRegNum == 0 && Memory.OffsetImm == 0 &&
861 (alignOK || Memory.Alignment == 0);
863 bool isAlignedMemory() const {
864 return isMemNoOffset(true);
866 bool isAddrMode2() const {
867 if (!isMemory() || Memory.Alignment != 0) return false;
868 // Check for register offset.
869 if (Memory.OffsetRegNum) return true;
870 // Immediate offset in range [-4095, 4095].
871 if (!Memory.OffsetImm) return true;
872 int64_t Val = Memory.OffsetImm->getValue();
873 return Val > -4096 && Val < 4096;
875 bool isAM2OffsetImm() const {
876 if (Kind != k_Immediate)
878 // Immediate offset in range [-4095, 4095].
879 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
880 if (!CE) return false;
881 int64_t Val = CE->getValue();
882 return Val > -4096 && Val < 4096;
884 bool isAddrMode3() const {
885 // If we have an immediate that's not a constant, treat it as a label
886 // reference needing a fixup. If it is a constant, it's something else
888 if (Kind == k_Immediate && !isa<MCConstantExpr>(getImm()))
890 if (!isMemory() || Memory.Alignment != 0) return false;
891 // No shifts are legal for AM3.
892 if (Memory.ShiftType != ARM_AM::no_shift) return false;
893 // Check for register offset.
894 if (Memory.OffsetRegNum) return true;
895 // Immediate offset in range [-255, 255].
896 if (!Memory.OffsetImm) return true;
897 int64_t Val = Memory.OffsetImm->getValue();
898 return Val > -256 && Val < 256;
900 bool isAM3Offset() const {
901 if (Kind != k_Immediate && Kind != k_PostIndexRegister)
903 if (Kind == k_PostIndexRegister)
904 return PostIdxReg.ShiftTy == ARM_AM::no_shift;
905 // Immediate offset in range [-255, 255].
906 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
907 if (!CE) return false;
908 int64_t Val = CE->getValue();
909 // Special case, #-0 is INT32_MIN.
910 return (Val > -256 && Val < 256) || Val == INT32_MIN;
912 bool isAddrMode5() const {
913 // If we have an immediate that's not a constant, treat it as a label
914 // reference needing a fixup. If it is a constant, it's something else
916 if (Kind == k_Immediate && !isa<MCConstantExpr>(getImm()))
918 if (!isMemory() || Memory.Alignment != 0) return false;
919 // Check for register offset.
920 if (Memory.OffsetRegNum) return false;
921 // Immediate offset in range [-1020, 1020] and a multiple of 4.
922 if (!Memory.OffsetImm) return true;
923 int64_t Val = Memory.OffsetImm->getValue();
924 return (Val >= -1020 && Val <= 1020 && ((Val & 3) == 0)) ||
927 bool isMemTBB() const {
928 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
929 Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0)
933 bool isMemTBH() const {
934 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
935 Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm != 1 ||
936 Memory.Alignment != 0 )
940 bool isMemRegOffset() const {
941 if (!isMemory() || !Memory.OffsetRegNum || Memory.Alignment != 0)
945 bool isT2MemRegOffset() const {
946 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
947 Memory.Alignment != 0)
949 // Only lsl #{0, 1, 2, 3} allowed.
950 if (Memory.ShiftType == ARM_AM::no_shift)
952 if (Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm > 3)
956 bool isMemThumbRR() const {
957 // Thumb reg+reg addressing is simple. Just two registers, a base and
958 // an offset. No shifts, negations or any other complicating factors.
959 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
960 Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0)
962 return isARMLowRegister(Memory.BaseRegNum) &&
963 (!Memory.OffsetRegNum || isARMLowRegister(Memory.OffsetRegNum));
965 bool isMemThumbRIs4() const {
966 if (!isMemory() || Memory.OffsetRegNum != 0 ||
967 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
969 // Immediate offset, multiple of 4 in range [0, 124].
970 if (!Memory.OffsetImm) return true;
971 int64_t Val = Memory.OffsetImm->getValue();
972 return Val >= 0 && Val <= 124 && (Val % 4) == 0;
974 bool isMemThumbRIs2() const {
975 if (!isMemory() || Memory.OffsetRegNum != 0 ||
976 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
978 // Immediate offset, multiple of 4 in range [0, 62].
979 if (!Memory.OffsetImm) return true;
980 int64_t Val = Memory.OffsetImm->getValue();
981 return Val >= 0 && Val <= 62 && (Val % 2) == 0;
983 bool isMemThumbRIs1() const {
984 if (!isMemory() || Memory.OffsetRegNum != 0 ||
985 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
987 // Immediate offset in range [0, 31].
988 if (!Memory.OffsetImm) return true;
989 int64_t Val = Memory.OffsetImm->getValue();
990 return Val >= 0 && Val <= 31;
992 bool isMemThumbSPI() const {
993 if (!isMemory() || Memory.OffsetRegNum != 0 ||
994 Memory.BaseRegNum != ARM::SP || Memory.Alignment != 0)
996 // Immediate offset, multiple of 4 in range [0, 1020].
997 if (!Memory.OffsetImm) return true;
998 int64_t Val = Memory.OffsetImm->getValue();
999 return Val >= 0 && Val <= 1020 && (Val % 4) == 0;
1001 bool isMemImm8s4Offset() const {
1002 // If we have an immediate that's not a constant, treat it as a label
1003 // reference needing a fixup. If it is a constant, it's something else
1004 // and we reject it.
1005 if (Kind == k_Immediate && !isa<MCConstantExpr>(getImm()))
1007 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1009 // Immediate offset a multiple of 4 in range [-1020, 1020].
1010 if (!Memory.OffsetImm) return true;
1011 int64_t Val = Memory.OffsetImm->getValue();
1012 return Val >= -1020 && Val <= 1020 && (Val & 3) == 0;
1014 bool isMemImm0_1020s4Offset() const {
1015 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1017 // Immediate offset a multiple of 4 in range [0, 1020].
1018 if (!Memory.OffsetImm) return true;
1019 int64_t Val = Memory.OffsetImm->getValue();
1020 return Val >= 0 && Val <= 1020 && (Val & 3) == 0;
1022 bool isMemImm8Offset() const {
1023 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1025 // Immediate offset in range [-255, 255].
1026 if (!Memory.OffsetImm) return true;
1027 int64_t Val = Memory.OffsetImm->getValue();
1028 return (Val == INT32_MIN) || (Val > -256 && Val < 256);
1030 bool isMemPosImm8Offset() const {
1031 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1033 // Immediate offset in range [0, 255].
1034 if (!Memory.OffsetImm) return true;
1035 int64_t Val = Memory.OffsetImm->getValue();
1036 return Val >= 0 && Val < 256;
1038 bool isMemNegImm8Offset() const {
1039 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1041 // Immediate offset in range [-255, -1].
1042 if (!Memory.OffsetImm) return false;
1043 int64_t Val = Memory.OffsetImm->getValue();
1044 return (Val == INT32_MIN) || (Val > -256 && Val < 0);
1046 bool isMemUImm12Offset() const {
1047 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1049 // Immediate offset in range [0, 4095].
1050 if (!Memory.OffsetImm) return true;
1051 int64_t Val = Memory.OffsetImm->getValue();
1052 return (Val >= 0 && Val < 4096);
1054 bool isMemImm12Offset() const {
1055 // If we have an immediate that's not a constant, treat it as a label
1056 // reference needing a fixup. If it is a constant, it's something else
1057 // and we reject it.
1058 if (Kind == k_Immediate && !isa<MCConstantExpr>(getImm()))
1061 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1063 // Immediate offset in range [-4095, 4095].
1064 if (!Memory.OffsetImm) return true;
1065 int64_t Val = Memory.OffsetImm->getValue();
1066 return (Val > -4096 && Val < 4096) || (Val == INT32_MIN);
1068 bool isPostIdxImm8() const {
1069 if (Kind != k_Immediate)
1071 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1072 if (!CE) return false;
1073 int64_t Val = CE->getValue();
1074 return (Val > -256 && Val < 256) || (Val == INT32_MIN);
1076 bool isPostIdxImm8s4() const {
1077 if (Kind != k_Immediate)
1079 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1080 if (!CE) return false;
1081 int64_t Val = CE->getValue();
1082 return ((Val & 3) == 0 && Val >= -1020 && Val <= 1020) ||
1086 bool isMSRMask() const { return Kind == k_MSRMask; }
1087 bool isProcIFlags() const { return Kind == k_ProcIFlags; }
1090 bool isSingleSpacedVectorList() const {
1091 return Kind == k_VectorList && !VectorList.isDoubleSpaced;
1093 bool isDoubleSpacedVectorList() const {
1094 return Kind == k_VectorList && VectorList.isDoubleSpaced;
1096 bool isVecListOneD() const {
1097 if (!isSingleSpacedVectorList()) return false;
1098 return VectorList.Count == 1;
1101 bool isVecListTwoD() const {
1102 if (!isSingleSpacedVectorList()) return false;
1103 return VectorList.Count == 2;
1106 bool isVecListThreeD() const {
1107 if (!isSingleSpacedVectorList()) return false;
1108 return VectorList.Count == 3;
1111 bool isVecListFourD() const {
1112 if (!isSingleSpacedVectorList()) return false;
1113 return VectorList.Count == 4;
1116 bool isVecListTwoQ() const {
1117 if (!isDoubleSpacedVectorList()) return false;
1118 return VectorList.Count == 2;
1121 bool isVecListOneDAllLanes() const {
1122 if (Kind != k_VectorListAllLanes) return false;
1123 return VectorList.Count == 1;
1126 bool isVecListTwoDAllLanes() const {
1127 if (Kind != k_VectorListAllLanes) return false;
1128 return VectorList.Count == 2;
1131 bool isSingleSpacedVectorIndexed() const {
1132 return Kind == k_VectorListIndexed && !VectorList.isDoubleSpaced;
1134 bool isDoubleSpacedVectorIndexed() const {
1135 return Kind == k_VectorListIndexed && VectorList.isDoubleSpaced;
1137 bool isVecListOneDByteIndexed() const {
1138 if (!isSingleSpacedVectorIndexed()) return false;
1139 return VectorList.Count == 1 && VectorList.LaneIndex <= 7;
1142 bool isVecListOneDHWordIndexed() const {
1143 if (!isSingleSpacedVectorIndexed()) return false;
1144 return VectorList.Count == 1 && VectorList.LaneIndex <= 3;
1147 bool isVecListOneDWordIndexed() const {
1148 if (!isSingleSpacedVectorIndexed()) return false;
1149 return VectorList.Count == 1 && VectorList.LaneIndex <= 1;
1152 bool isVecListTwoDByteIndexed() const {
1153 if (!isSingleSpacedVectorIndexed()) return false;
1154 return VectorList.Count == 2 && VectorList.LaneIndex <= 7;
1157 bool isVecListTwoDHWordIndexed() const {
1158 if (!isSingleSpacedVectorIndexed()) return false;
1159 return VectorList.Count == 2 && VectorList.LaneIndex <= 3;
1162 bool isVecListTwoQWordIndexed() const {
1163 if (!isDoubleSpacedVectorIndexed()) return false;
1164 return VectorList.Count == 2 && VectorList.LaneIndex <= 1;
1167 bool isVecListTwoQHWordIndexed() const {
1168 if (!isDoubleSpacedVectorIndexed()) return false;
1169 return VectorList.Count == 2 && VectorList.LaneIndex <= 3;
1172 bool isVecListTwoDWordIndexed() const {
1173 if (!isSingleSpacedVectorIndexed()) return false;
1174 return VectorList.Count == 2 && VectorList.LaneIndex <= 1;
1177 bool isVectorIndex8() const {
1178 if (Kind != k_VectorIndex) return false;
1179 return VectorIndex.Val < 8;
1181 bool isVectorIndex16() const {
1182 if (Kind != k_VectorIndex) return false;
1183 return VectorIndex.Val < 4;
1185 bool isVectorIndex32() const {
1186 if (Kind != k_VectorIndex) return false;
1187 return VectorIndex.Val < 2;
1190 bool isNEONi8splat() const {
1191 if (Kind != k_Immediate)
1193 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1194 // Must be a constant.
1195 if (!CE) return false;
1196 int64_t Value = CE->getValue();
1197 // i8 value splatted across 8 bytes. The immediate is just the 8 byte
1199 return Value >= 0 && Value < 256;
1202 bool isNEONi16splat() const {
1203 if (Kind != k_Immediate)
1205 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1206 // Must be a constant.
1207 if (!CE) return false;
1208 int64_t Value = CE->getValue();
1209 // i16 value in the range [0,255] or [0x0100, 0xff00]
1210 return (Value >= 0 && Value < 256) || (Value >= 0x0100 && Value <= 0xff00);
1213 bool isNEONi32splat() const {
1214 if (Kind != k_Immediate)
1216 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1217 // Must be a constant.
1218 if (!CE) return false;
1219 int64_t Value = CE->getValue();
1220 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X.
1221 return (Value >= 0 && Value < 256) ||
1222 (Value >= 0x0100 && Value <= 0xff00) ||
1223 (Value >= 0x010000 && Value <= 0xff0000) ||
1224 (Value >= 0x01000000 && Value <= 0xff000000);
1227 bool isNEONi32vmov() const {
1228 if (Kind != k_Immediate)
1230 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1231 // Must be a constant.
1232 if (!CE) return false;
1233 int64_t Value = CE->getValue();
1234 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X,
1235 // for VMOV/VMVN only, 00Xf or 0Xff are also accepted.
1236 return (Value >= 0 && Value < 256) ||
1237 (Value >= 0x0100 && Value <= 0xff00) ||
1238 (Value >= 0x010000 && Value <= 0xff0000) ||
1239 (Value >= 0x01000000 && Value <= 0xff000000) ||
1240 (Value >= 0x01ff && Value <= 0xffff && (Value & 0xff) == 0xff) ||
1241 (Value >= 0x01ffff && Value <= 0xffffff && (Value & 0xffff) == 0xffff);
1243 bool isNEONi32vmovNeg() const {
1244 if (Kind != k_Immediate)
1246 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1247 // Must be a constant.
1248 if (!CE) return false;
1249 int64_t Value = ~CE->getValue();
1250 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X,
1251 // for VMOV/VMVN only, 00Xf or 0Xff are also accepted.
1252 return (Value >= 0 && Value < 256) ||
1253 (Value >= 0x0100 && Value <= 0xff00) ||
1254 (Value >= 0x010000 && Value <= 0xff0000) ||
1255 (Value >= 0x01000000 && Value <= 0xff000000) ||
1256 (Value >= 0x01ff && Value <= 0xffff && (Value & 0xff) == 0xff) ||
1257 (Value >= 0x01ffff && Value <= 0xffffff && (Value & 0xffff) == 0xffff);
1260 bool isNEONi64splat() const {
1261 if (Kind != k_Immediate)
1263 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1264 // Must be a constant.
1265 if (!CE) return false;
1266 uint64_t Value = CE->getValue();
1267 // i64 value with each byte being either 0 or 0xff.
1268 for (unsigned i = 0; i < 8; ++i)
1269 if ((Value & 0xff) != 0 && (Value & 0xff) != 0xff) return false;
1273 void addExpr(MCInst &Inst, const MCExpr *Expr) const {
1274 // Add as immediates when possible. Null MCExpr = 0.
1276 Inst.addOperand(MCOperand::CreateImm(0));
1277 else if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr))
1278 Inst.addOperand(MCOperand::CreateImm(CE->getValue()));
1280 Inst.addOperand(MCOperand::CreateExpr(Expr));
1283 void addCondCodeOperands(MCInst &Inst, unsigned N) const {
1284 assert(N == 2 && "Invalid number of operands!");
1285 Inst.addOperand(MCOperand::CreateImm(unsigned(getCondCode())));
1286 unsigned RegNum = getCondCode() == ARMCC::AL ? 0: ARM::CPSR;
1287 Inst.addOperand(MCOperand::CreateReg(RegNum));
1290 void addCoprocNumOperands(MCInst &Inst, unsigned N) const {
1291 assert(N == 1 && "Invalid number of operands!");
1292 Inst.addOperand(MCOperand::CreateImm(getCoproc()));
1295 void addCoprocRegOperands(MCInst &Inst, unsigned N) const {
1296 assert(N == 1 && "Invalid number of operands!");
1297 Inst.addOperand(MCOperand::CreateImm(getCoproc()));
1300 void addCoprocOptionOperands(MCInst &Inst, unsigned N) const {
1301 assert(N == 1 && "Invalid number of operands!");
1302 Inst.addOperand(MCOperand::CreateImm(CoprocOption.Val));
1305 void addITMaskOperands(MCInst &Inst, unsigned N) const {
1306 assert(N == 1 && "Invalid number of operands!");
1307 Inst.addOperand(MCOperand::CreateImm(ITMask.Mask));
1310 void addITCondCodeOperands(MCInst &Inst, unsigned N) const {
1311 assert(N == 1 && "Invalid number of operands!");
1312 Inst.addOperand(MCOperand::CreateImm(unsigned(getCondCode())));
1315 void addCCOutOperands(MCInst &Inst, unsigned N) const {
1316 assert(N == 1 && "Invalid number of operands!");
1317 Inst.addOperand(MCOperand::CreateReg(getReg()));
1320 void addRegOperands(MCInst &Inst, unsigned N) const {
1321 assert(N == 1 && "Invalid number of operands!");
1322 Inst.addOperand(MCOperand::CreateReg(getReg()));
1325 void addRegShiftedRegOperands(MCInst &Inst, unsigned N) const {
1326 assert(N == 3 && "Invalid number of operands!");
1327 assert(isRegShiftedReg() &&
1328 "addRegShiftedRegOperands() on non RegShiftedReg!");
1329 Inst.addOperand(MCOperand::CreateReg(RegShiftedReg.SrcReg));
1330 Inst.addOperand(MCOperand::CreateReg(RegShiftedReg.ShiftReg));
1331 Inst.addOperand(MCOperand::CreateImm(
1332 ARM_AM::getSORegOpc(RegShiftedReg.ShiftTy, RegShiftedReg.ShiftImm)));
1335 void addRegShiftedImmOperands(MCInst &Inst, unsigned N) const {
1336 assert(N == 2 && "Invalid number of operands!");
1337 assert(isRegShiftedImm() &&
1338 "addRegShiftedImmOperands() on non RegShiftedImm!");
1339 Inst.addOperand(MCOperand::CreateReg(RegShiftedImm.SrcReg));
1340 Inst.addOperand(MCOperand::CreateImm(
1341 ARM_AM::getSORegOpc(RegShiftedImm.ShiftTy, RegShiftedImm.ShiftImm)));
1344 void addShifterImmOperands(MCInst &Inst, unsigned N) const {
1345 assert(N == 1 && "Invalid number of operands!");
1346 Inst.addOperand(MCOperand::CreateImm((ShifterImm.isASR << 5) |
1350 void addRegListOperands(MCInst &Inst, unsigned N) const {
1351 assert(N == 1 && "Invalid number of operands!");
1352 const SmallVectorImpl<unsigned> &RegList = getRegList();
1353 for (SmallVectorImpl<unsigned>::const_iterator
1354 I = RegList.begin(), E = RegList.end(); I != E; ++I)
1355 Inst.addOperand(MCOperand::CreateReg(*I));
1358 void addDPRRegListOperands(MCInst &Inst, unsigned N) const {
1359 addRegListOperands(Inst, N);
1362 void addSPRRegListOperands(MCInst &Inst, unsigned N) const {
1363 addRegListOperands(Inst, N);
1366 void addRotImmOperands(MCInst &Inst, unsigned N) const {
1367 assert(N == 1 && "Invalid number of operands!");
1368 // Encoded as val>>3. The printer handles display as 8, 16, 24.
1369 Inst.addOperand(MCOperand::CreateImm(RotImm.Imm >> 3));
1372 void addBitfieldOperands(MCInst &Inst, unsigned N) const {
1373 assert(N == 1 && "Invalid number of operands!");
1374 // Munge the lsb/width into a bitfield mask.
1375 unsigned lsb = Bitfield.LSB;
1376 unsigned width = Bitfield.Width;
1377 // Make a 32-bit mask w/ the referenced bits clear and all other bits set.
1378 uint32_t Mask = ~(((uint32_t)0xffffffff >> lsb) << (32 - width) >>
1379 (32 - (lsb + width)));
1380 Inst.addOperand(MCOperand::CreateImm(Mask));
1383 void addImmOperands(MCInst &Inst, unsigned N) const {
1384 assert(N == 1 && "Invalid number of operands!");
1385 addExpr(Inst, getImm());
1388 void addFPImmOperands(MCInst &Inst, unsigned N) const {
1389 assert(N == 1 && "Invalid number of operands!");
1390 Inst.addOperand(MCOperand::CreateImm(getFPImm()));
1393 void addImm8s4Operands(MCInst &Inst, unsigned N) const {
1394 assert(N == 1 && "Invalid number of operands!");
1395 // FIXME: We really want to scale the value here, but the LDRD/STRD
1396 // instruction don't encode operands that way yet.
1397 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1398 Inst.addOperand(MCOperand::CreateImm(CE->getValue()));
1401 void addImm0_1020s4Operands(MCInst &Inst, unsigned N) const {
1402 assert(N == 1 && "Invalid number of operands!");
1403 // The immediate is scaled by four in the encoding and is stored
1404 // in the MCInst as such. Lop off the low two bits here.
1405 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1406 Inst.addOperand(MCOperand::CreateImm(CE->getValue() / 4));
1409 void addImm0_508s4Operands(MCInst &Inst, unsigned N) const {
1410 assert(N == 1 && "Invalid number of operands!");
1411 // The immediate is scaled by four in the encoding and is stored
1412 // in the MCInst as such. Lop off the low two bits here.
1413 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1414 Inst.addOperand(MCOperand::CreateImm(CE->getValue() / 4));
1417 void addImm1_16Operands(MCInst &Inst, unsigned N) const {
1418 assert(N == 1 && "Invalid number of operands!");
1419 // The constant encodes as the immediate-1, and we store in the instruction
1420 // the bits as encoded, so subtract off one here.
1421 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1422 Inst.addOperand(MCOperand::CreateImm(CE->getValue() - 1));
1425 void addImm1_32Operands(MCInst &Inst, unsigned N) const {
1426 assert(N == 1 && "Invalid number of operands!");
1427 // The constant encodes as the immediate-1, and we store in the instruction
1428 // the bits as encoded, so subtract off one here.
1429 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1430 Inst.addOperand(MCOperand::CreateImm(CE->getValue() - 1));
1433 void addImmThumbSROperands(MCInst &Inst, unsigned N) const {
1434 assert(N == 1 && "Invalid number of operands!");
1435 // The constant encodes as the immediate, except for 32, which encodes as
1437 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1438 unsigned Imm = CE->getValue();
1439 Inst.addOperand(MCOperand::CreateImm((Imm == 32 ? 0 : Imm)));
1442 void addPKHASRImmOperands(MCInst &Inst, unsigned N) const {
1443 assert(N == 1 && "Invalid number of operands!");
1444 // An ASR value of 32 encodes as 0, so that's how we want to add it to
1445 // the instruction as well.
1446 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1447 int Val = CE->getValue();
1448 Inst.addOperand(MCOperand::CreateImm(Val == 32 ? 0 : Val));
1451 void addT2SOImmNotOperands(MCInst &Inst, unsigned N) const {
1452 assert(N == 1 && "Invalid number of operands!");
1453 // The operand is actually a t2_so_imm, but we have its bitwise
1454 // negation in the assembly source, so twiddle it here.
1455 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1456 Inst.addOperand(MCOperand::CreateImm(~CE->getValue()));
1459 void addT2SOImmNegOperands(MCInst &Inst, unsigned N) const {
1460 assert(N == 1 && "Invalid number of operands!");
1461 // The operand is actually a t2_so_imm, but we have its
1462 // negation in the assembly source, so twiddle it here.
1463 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1464 Inst.addOperand(MCOperand::CreateImm(-CE->getValue()));
1467 void addARMSOImmNotOperands(MCInst &Inst, unsigned N) const {
1468 assert(N == 1 && "Invalid number of operands!");
1469 // The operand is actually a so_imm, but we have its bitwise
1470 // negation in the assembly source, so twiddle it here.
1471 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1472 Inst.addOperand(MCOperand::CreateImm(~CE->getValue()));
1475 void addARMSOImmNegOperands(MCInst &Inst, unsigned N) const {
1476 assert(N == 1 && "Invalid number of operands!");
1477 // The operand is actually a so_imm, but we have its
1478 // negation in the assembly source, so twiddle it here.
1479 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1480 Inst.addOperand(MCOperand::CreateImm(-CE->getValue()));
1483 void addMemBarrierOptOperands(MCInst &Inst, unsigned N) const {
1484 assert(N == 1 && "Invalid number of operands!");
1485 Inst.addOperand(MCOperand::CreateImm(unsigned(getMemBarrierOpt())));
1488 void addMemNoOffsetOperands(MCInst &Inst, unsigned N) const {
1489 assert(N == 1 && "Invalid number of operands!");
1490 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1493 void addAlignedMemoryOperands(MCInst &Inst, unsigned N) const {
1494 assert(N == 2 && "Invalid number of operands!");
1495 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1496 Inst.addOperand(MCOperand::CreateImm(Memory.Alignment));
1499 void addAddrMode2Operands(MCInst &Inst, unsigned N) const {
1500 assert(N == 3 && "Invalid number of operands!");
1501 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1502 if (!Memory.OffsetRegNum) {
1503 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1504 // Special case for #-0
1505 if (Val == INT32_MIN) Val = 0;
1506 if (Val < 0) Val = -Val;
1507 Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift);
1509 // For register offset, we encode the shift type and negation flag
1511 Val = ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add,
1512 Memory.ShiftImm, Memory.ShiftType);
1514 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1515 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1516 Inst.addOperand(MCOperand::CreateImm(Val));
1519 void addAM2OffsetImmOperands(MCInst &Inst, unsigned N) const {
1520 assert(N == 2 && "Invalid number of operands!");
1521 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1522 assert(CE && "non-constant AM2OffsetImm operand!");
1523 int32_t Val = CE->getValue();
1524 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1525 // Special case for #-0
1526 if (Val == INT32_MIN) Val = 0;
1527 if (Val < 0) Val = -Val;
1528 Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift);
1529 Inst.addOperand(MCOperand::CreateReg(0));
1530 Inst.addOperand(MCOperand::CreateImm(Val));
1533 void addAddrMode3Operands(MCInst &Inst, unsigned N) const {
1534 assert(N == 3 && "Invalid number of operands!");
1535 // If we have an immediate that's not a constant, treat it as a label
1536 // reference needing a fixup. If it is a constant, it's something else
1537 // and we reject it.
1539 Inst.addOperand(MCOperand::CreateExpr(getImm()));
1540 Inst.addOperand(MCOperand::CreateReg(0));
1541 Inst.addOperand(MCOperand::CreateImm(0));
1545 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1546 if (!Memory.OffsetRegNum) {
1547 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1548 // Special case for #-0
1549 if (Val == INT32_MIN) Val = 0;
1550 if (Val < 0) Val = -Val;
1551 Val = ARM_AM::getAM3Opc(AddSub, Val);
1553 // For register offset, we encode the shift type and negation flag
1555 Val = ARM_AM::getAM3Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add, 0);
1557 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1558 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1559 Inst.addOperand(MCOperand::CreateImm(Val));
1562 void addAM3OffsetOperands(MCInst &Inst, unsigned N) const {
1563 assert(N == 2 && "Invalid number of operands!");
1564 if (Kind == k_PostIndexRegister) {
1566 ARM_AM::getAM3Opc(PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub, 0);
1567 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
1568 Inst.addOperand(MCOperand::CreateImm(Val));
1573 const MCConstantExpr *CE = static_cast<const MCConstantExpr*>(getImm());
1574 int32_t Val = CE->getValue();
1575 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1576 // Special case for #-0
1577 if (Val == INT32_MIN) Val = 0;
1578 if (Val < 0) Val = -Val;
1579 Val = ARM_AM::getAM3Opc(AddSub, Val);
1580 Inst.addOperand(MCOperand::CreateReg(0));
1581 Inst.addOperand(MCOperand::CreateImm(Val));
1584 void addAddrMode5Operands(MCInst &Inst, unsigned N) const {
1585 assert(N == 2 && "Invalid number of operands!");
1586 // If we have an immediate that's not a constant, treat it as a label
1587 // reference needing a fixup. If it is a constant, it's something else
1588 // and we reject it.
1590 Inst.addOperand(MCOperand::CreateExpr(getImm()));
1591 Inst.addOperand(MCOperand::CreateImm(0));
1595 // The lower two bits are always zero and as such are not encoded.
1596 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0;
1597 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1598 // Special case for #-0
1599 if (Val == INT32_MIN) Val = 0;
1600 if (Val < 0) Val = -Val;
1601 Val = ARM_AM::getAM5Opc(AddSub, Val);
1602 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1603 Inst.addOperand(MCOperand::CreateImm(Val));
1606 void addMemImm8s4OffsetOperands(MCInst &Inst, unsigned N) const {
1607 assert(N == 2 && "Invalid number of operands!");
1608 // If we have an immediate that's not a constant, treat it as a label
1609 // reference needing a fixup. If it is a constant, it's something else
1610 // and we reject it.
1612 Inst.addOperand(MCOperand::CreateExpr(getImm()));
1613 Inst.addOperand(MCOperand::CreateImm(0));
1617 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1618 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1619 Inst.addOperand(MCOperand::CreateImm(Val));
1622 void addMemImm0_1020s4OffsetOperands(MCInst &Inst, unsigned N) const {
1623 assert(N == 2 && "Invalid number of operands!");
1624 // The lower two bits are always zero and as such are not encoded.
1625 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0;
1626 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1627 Inst.addOperand(MCOperand::CreateImm(Val));
1630 void addMemImm8OffsetOperands(MCInst &Inst, unsigned N) const {
1631 assert(N == 2 && "Invalid number of operands!");
1632 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1633 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1634 Inst.addOperand(MCOperand::CreateImm(Val));
1637 void addMemPosImm8OffsetOperands(MCInst &Inst, unsigned N) const {
1638 addMemImm8OffsetOperands(Inst, N);
1641 void addMemNegImm8OffsetOperands(MCInst &Inst, unsigned N) const {
1642 addMemImm8OffsetOperands(Inst, N);
1645 void addMemUImm12OffsetOperands(MCInst &Inst, unsigned N) const {
1646 assert(N == 2 && "Invalid number of operands!");
1647 // If this is an immediate, it's a label reference.
1648 if (Kind == k_Immediate) {
1649 addExpr(Inst, getImm());
1650 Inst.addOperand(MCOperand::CreateImm(0));
1654 // Otherwise, it's a normal memory reg+offset.
1655 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1656 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1657 Inst.addOperand(MCOperand::CreateImm(Val));
1660 void addMemImm12OffsetOperands(MCInst &Inst, unsigned N) const {
1661 assert(N == 2 && "Invalid number of operands!");
1662 // If this is an immediate, it's a label reference.
1663 if (Kind == k_Immediate) {
1664 addExpr(Inst, getImm());
1665 Inst.addOperand(MCOperand::CreateImm(0));
1669 // Otherwise, it's a normal memory reg+offset.
1670 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1671 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1672 Inst.addOperand(MCOperand::CreateImm(Val));
1675 void addMemTBBOperands(MCInst &Inst, unsigned N) const {
1676 assert(N == 2 && "Invalid number of operands!");
1677 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1678 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1681 void addMemTBHOperands(MCInst &Inst, unsigned N) const {
1682 assert(N == 2 && "Invalid number of operands!");
1683 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1684 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1687 void addMemRegOffsetOperands(MCInst &Inst, unsigned N) const {
1688 assert(N == 3 && "Invalid number of operands!");
1690 ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add,
1691 Memory.ShiftImm, Memory.ShiftType);
1692 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1693 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1694 Inst.addOperand(MCOperand::CreateImm(Val));
1697 void addT2MemRegOffsetOperands(MCInst &Inst, unsigned N) const {
1698 assert(N == 3 && "Invalid number of operands!");
1699 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1700 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1701 Inst.addOperand(MCOperand::CreateImm(Memory.ShiftImm));
1704 void addMemThumbRROperands(MCInst &Inst, unsigned N) const {
1705 assert(N == 2 && "Invalid number of operands!");
1706 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1707 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1710 void addMemThumbRIs4Operands(MCInst &Inst, unsigned N) const {
1711 assert(N == 2 && "Invalid number of operands!");
1712 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0;
1713 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1714 Inst.addOperand(MCOperand::CreateImm(Val));
1717 void addMemThumbRIs2Operands(MCInst &Inst, unsigned N) const {
1718 assert(N == 2 && "Invalid number of operands!");
1719 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 2) : 0;
1720 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1721 Inst.addOperand(MCOperand::CreateImm(Val));
1724 void addMemThumbRIs1Operands(MCInst &Inst, unsigned N) const {
1725 assert(N == 2 && "Invalid number of operands!");
1726 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue()) : 0;
1727 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1728 Inst.addOperand(MCOperand::CreateImm(Val));
1731 void addMemThumbSPIOperands(MCInst &Inst, unsigned N) const {
1732 assert(N == 2 && "Invalid number of operands!");
1733 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0;
1734 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1735 Inst.addOperand(MCOperand::CreateImm(Val));
1738 void addPostIdxImm8Operands(MCInst &Inst, unsigned N) const {
1739 assert(N == 1 && "Invalid number of operands!");
1740 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1741 assert(CE && "non-constant post-idx-imm8 operand!");
1742 int Imm = CE->getValue();
1743 bool isAdd = Imm >= 0;
1744 if (Imm == INT32_MIN) Imm = 0;
1745 Imm = (Imm < 0 ? -Imm : Imm) | (int)isAdd << 8;
1746 Inst.addOperand(MCOperand::CreateImm(Imm));
1749 void addPostIdxImm8s4Operands(MCInst &Inst, unsigned N) const {
1750 assert(N == 1 && "Invalid number of operands!");
1751 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1752 assert(CE && "non-constant post-idx-imm8s4 operand!");
1753 int Imm = CE->getValue();
1754 bool isAdd = Imm >= 0;
1755 if (Imm == INT32_MIN) Imm = 0;
1756 // Immediate is scaled by 4.
1757 Imm = ((Imm < 0 ? -Imm : Imm) / 4) | (int)isAdd << 8;
1758 Inst.addOperand(MCOperand::CreateImm(Imm));
1761 void addPostIdxRegOperands(MCInst &Inst, unsigned N) const {
1762 assert(N == 2 && "Invalid number of operands!");
1763 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
1764 Inst.addOperand(MCOperand::CreateImm(PostIdxReg.isAdd));
1767 void addPostIdxRegShiftedOperands(MCInst &Inst, unsigned N) const {
1768 assert(N == 2 && "Invalid number of operands!");
1769 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
1770 // The sign, shift type, and shift amount are encoded in a single operand
1771 // using the AM2 encoding helpers.
1772 ARM_AM::AddrOpc opc = PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub;
1773 unsigned Imm = ARM_AM::getAM2Opc(opc, PostIdxReg.ShiftImm,
1774 PostIdxReg.ShiftTy);
1775 Inst.addOperand(MCOperand::CreateImm(Imm));
1778 void addMSRMaskOperands(MCInst &Inst, unsigned N) const {
1779 assert(N == 1 && "Invalid number of operands!");
1780 Inst.addOperand(MCOperand::CreateImm(unsigned(getMSRMask())));
1783 void addProcIFlagsOperands(MCInst &Inst, unsigned N) const {
1784 assert(N == 1 && "Invalid number of operands!");
1785 Inst.addOperand(MCOperand::CreateImm(unsigned(getProcIFlags())));
1788 void addVecListOperands(MCInst &Inst, unsigned N) const {
1789 assert(N == 1 && "Invalid number of operands!");
1790 Inst.addOperand(MCOperand::CreateReg(VectorList.RegNum));
1793 void addVecListIndexedOperands(MCInst &Inst, unsigned N) const {
1794 assert(N == 2 && "Invalid number of operands!");
1795 Inst.addOperand(MCOperand::CreateReg(VectorList.RegNum));
1796 Inst.addOperand(MCOperand::CreateImm(VectorList.LaneIndex));
1799 void addVectorIndex8Operands(MCInst &Inst, unsigned N) const {
1800 assert(N == 1 && "Invalid number of operands!");
1801 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
1804 void addVectorIndex16Operands(MCInst &Inst, unsigned N) const {
1805 assert(N == 1 && "Invalid number of operands!");
1806 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
1809 void addVectorIndex32Operands(MCInst &Inst, unsigned N) const {
1810 assert(N == 1 && "Invalid number of operands!");
1811 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
1814 void addNEONi8splatOperands(MCInst &Inst, unsigned N) const {
1815 assert(N == 1 && "Invalid number of operands!");
1816 // The immediate encodes the type of constant as well as the value.
1817 // Mask in that this is an i8 splat.
1818 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1819 Inst.addOperand(MCOperand::CreateImm(CE->getValue() | 0xe00));
1822 void addNEONi16splatOperands(MCInst &Inst, unsigned N) const {
1823 assert(N == 1 && "Invalid number of operands!");
1824 // The immediate encodes the type of constant as well as the value.
1825 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1826 unsigned Value = CE->getValue();
1828 Value = (Value >> 8) | 0xa00;
1831 Inst.addOperand(MCOperand::CreateImm(Value));
1834 void addNEONi32splatOperands(MCInst &Inst, unsigned N) const {
1835 assert(N == 1 && "Invalid number of operands!");
1836 // The immediate encodes the type of constant as well as the value.
1837 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1838 unsigned Value = CE->getValue();
1839 if (Value >= 256 && Value <= 0xff00)
1840 Value = (Value >> 8) | 0x200;
1841 else if (Value > 0xffff && Value <= 0xff0000)
1842 Value = (Value >> 16) | 0x400;
1843 else if (Value > 0xffffff)
1844 Value = (Value >> 24) | 0x600;
1845 Inst.addOperand(MCOperand::CreateImm(Value));
1848 void addNEONi32vmovOperands(MCInst &Inst, unsigned N) const {
1849 assert(N == 1 && "Invalid number of operands!");
1850 // The immediate encodes the type of constant as well as the value.
1851 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1852 unsigned Value = CE->getValue();
1853 if (Value >= 256 && Value <= 0xffff)
1854 Value = (Value >> 8) | ((Value & 0xff) ? 0xc00 : 0x200);
1855 else if (Value > 0xffff && Value <= 0xffffff)
1856 Value = (Value >> 16) | ((Value & 0xff) ? 0xd00 : 0x400);
1857 else if (Value > 0xffffff)
1858 Value = (Value >> 24) | 0x600;
1859 Inst.addOperand(MCOperand::CreateImm(Value));
1862 void addNEONi32vmovNegOperands(MCInst &Inst, unsigned N) const {
1863 assert(N == 1 && "Invalid number of operands!");
1864 // The immediate encodes the type of constant as well as the value.
1865 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1866 unsigned Value = ~CE->getValue();
1867 if (Value >= 256 && Value <= 0xffff)
1868 Value = (Value >> 8) | ((Value & 0xff) ? 0xc00 : 0x200);
1869 else if (Value > 0xffff && Value <= 0xffffff)
1870 Value = (Value >> 16) | ((Value & 0xff) ? 0xd00 : 0x400);
1871 else if (Value > 0xffffff)
1872 Value = (Value >> 24) | 0x600;
1873 Inst.addOperand(MCOperand::CreateImm(Value));
1876 void addNEONi64splatOperands(MCInst &Inst, unsigned N) const {
1877 assert(N == 1 && "Invalid number of operands!");
1878 // The immediate encodes the type of constant as well as the value.
1879 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1880 uint64_t Value = CE->getValue();
1882 for (unsigned i = 0; i < 8; ++i, Value >>= 8) {
1883 Imm |= (Value & 1) << i;
1885 Inst.addOperand(MCOperand::CreateImm(Imm | 0x1e00));
1888 virtual void print(raw_ostream &OS) const;
1890 static ARMOperand *CreateITMask(unsigned Mask, SMLoc S) {
1891 ARMOperand *Op = new ARMOperand(k_ITCondMask);
1892 Op->ITMask.Mask = Mask;
1898 static ARMOperand *CreateCondCode(ARMCC::CondCodes CC, SMLoc S) {
1899 ARMOperand *Op = new ARMOperand(k_CondCode);
1906 static ARMOperand *CreateCoprocNum(unsigned CopVal, SMLoc S) {
1907 ARMOperand *Op = new ARMOperand(k_CoprocNum);
1908 Op->Cop.Val = CopVal;
1914 static ARMOperand *CreateCoprocReg(unsigned CopVal, SMLoc S) {
1915 ARMOperand *Op = new ARMOperand(k_CoprocReg);
1916 Op->Cop.Val = CopVal;
1922 static ARMOperand *CreateCoprocOption(unsigned Val, SMLoc S, SMLoc E) {
1923 ARMOperand *Op = new ARMOperand(k_CoprocOption);
1930 static ARMOperand *CreateCCOut(unsigned RegNum, SMLoc S) {
1931 ARMOperand *Op = new ARMOperand(k_CCOut);
1932 Op->Reg.RegNum = RegNum;
1938 static ARMOperand *CreateToken(StringRef Str, SMLoc S) {
1939 ARMOperand *Op = new ARMOperand(k_Token);
1940 Op->Tok.Data = Str.data();
1941 Op->Tok.Length = Str.size();
1947 static ARMOperand *CreateReg(unsigned RegNum, SMLoc S, SMLoc E) {
1948 ARMOperand *Op = new ARMOperand(k_Register);
1949 Op->Reg.RegNum = RegNum;
1955 static ARMOperand *CreateShiftedRegister(ARM_AM::ShiftOpc ShTy,
1960 ARMOperand *Op = new ARMOperand(k_ShiftedRegister);
1961 Op->RegShiftedReg.ShiftTy = ShTy;
1962 Op->RegShiftedReg.SrcReg = SrcReg;
1963 Op->RegShiftedReg.ShiftReg = ShiftReg;
1964 Op->RegShiftedReg.ShiftImm = ShiftImm;
1970 static ARMOperand *CreateShiftedImmediate(ARM_AM::ShiftOpc ShTy,
1974 ARMOperand *Op = new ARMOperand(k_ShiftedImmediate);
1975 Op->RegShiftedImm.ShiftTy = ShTy;
1976 Op->RegShiftedImm.SrcReg = SrcReg;
1977 Op->RegShiftedImm.ShiftImm = ShiftImm;
1983 static ARMOperand *CreateShifterImm(bool isASR, unsigned Imm,
1985 ARMOperand *Op = new ARMOperand(k_ShifterImmediate);
1986 Op->ShifterImm.isASR = isASR;
1987 Op->ShifterImm.Imm = Imm;
1993 static ARMOperand *CreateRotImm(unsigned Imm, SMLoc S, SMLoc E) {
1994 ARMOperand *Op = new ARMOperand(k_RotateImmediate);
1995 Op->RotImm.Imm = Imm;
2001 static ARMOperand *CreateBitfield(unsigned LSB, unsigned Width,
2003 ARMOperand *Op = new ARMOperand(k_BitfieldDescriptor);
2004 Op->Bitfield.LSB = LSB;
2005 Op->Bitfield.Width = Width;
2012 CreateRegList(const SmallVectorImpl<std::pair<unsigned, SMLoc> > &Regs,
2013 SMLoc StartLoc, SMLoc EndLoc) {
2014 KindTy Kind = k_RegisterList;
2016 if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Regs.front().first))
2017 Kind = k_DPRRegisterList;
2018 else if (ARMMCRegisterClasses[ARM::SPRRegClassID].
2019 contains(Regs.front().first))
2020 Kind = k_SPRRegisterList;
2022 ARMOperand *Op = new ARMOperand(Kind);
2023 for (SmallVectorImpl<std::pair<unsigned, SMLoc> >::const_iterator
2024 I = Regs.begin(), E = Regs.end(); I != E; ++I)
2025 Op->Registers.push_back(I->first);
2026 array_pod_sort(Op->Registers.begin(), Op->Registers.end());
2027 Op->StartLoc = StartLoc;
2028 Op->EndLoc = EndLoc;
2032 static ARMOperand *CreateVectorList(unsigned RegNum, unsigned Count,
2033 bool isDoubleSpaced, SMLoc S, SMLoc E) {
2034 ARMOperand *Op = new ARMOperand(k_VectorList);
2035 Op->VectorList.RegNum = RegNum;
2036 Op->VectorList.Count = Count;
2037 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2043 static ARMOperand *CreateVectorListAllLanes(unsigned RegNum, unsigned Count,
2045 ARMOperand *Op = new ARMOperand(k_VectorListAllLanes);
2046 Op->VectorList.RegNum = RegNum;
2047 Op->VectorList.Count = Count;
2053 static ARMOperand *CreateVectorListIndexed(unsigned RegNum, unsigned Count,
2055 bool isDoubleSpaced,
2057 ARMOperand *Op = new ARMOperand(k_VectorListIndexed);
2058 Op->VectorList.RegNum = RegNum;
2059 Op->VectorList.Count = Count;
2060 Op->VectorList.LaneIndex = Index;
2061 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2067 static ARMOperand *CreateVectorIndex(unsigned Idx, SMLoc S, SMLoc E,
2069 ARMOperand *Op = new ARMOperand(k_VectorIndex);
2070 Op->VectorIndex.Val = Idx;
2076 static ARMOperand *CreateImm(const MCExpr *Val, SMLoc S, SMLoc E) {
2077 ARMOperand *Op = new ARMOperand(k_Immediate);
2084 static ARMOperand *CreateFPImm(unsigned Val, SMLoc S, MCContext &Ctx) {
2085 ARMOperand *Op = new ARMOperand(k_FPImmediate);
2086 Op->FPImm.Val = Val;
2092 static ARMOperand *CreateMem(unsigned BaseRegNum,
2093 const MCConstantExpr *OffsetImm,
2094 unsigned OffsetRegNum,
2095 ARM_AM::ShiftOpc ShiftType,
2100 ARMOperand *Op = new ARMOperand(k_Memory);
2101 Op->Memory.BaseRegNum = BaseRegNum;
2102 Op->Memory.OffsetImm = OffsetImm;
2103 Op->Memory.OffsetRegNum = OffsetRegNum;
2104 Op->Memory.ShiftType = ShiftType;
2105 Op->Memory.ShiftImm = ShiftImm;
2106 Op->Memory.Alignment = Alignment;
2107 Op->Memory.isNegative = isNegative;
2113 static ARMOperand *CreatePostIdxReg(unsigned RegNum, bool isAdd,
2114 ARM_AM::ShiftOpc ShiftTy,
2117 ARMOperand *Op = new ARMOperand(k_PostIndexRegister);
2118 Op->PostIdxReg.RegNum = RegNum;
2119 Op->PostIdxReg.isAdd = isAdd;
2120 Op->PostIdxReg.ShiftTy = ShiftTy;
2121 Op->PostIdxReg.ShiftImm = ShiftImm;
2127 static ARMOperand *CreateMemBarrierOpt(ARM_MB::MemBOpt Opt, SMLoc S) {
2128 ARMOperand *Op = new ARMOperand(k_MemBarrierOpt);
2129 Op->MBOpt.Val = Opt;
2135 static ARMOperand *CreateProcIFlags(ARM_PROC::IFlags IFlags, SMLoc S) {
2136 ARMOperand *Op = new ARMOperand(k_ProcIFlags);
2137 Op->IFlags.Val = IFlags;
2143 static ARMOperand *CreateMSRMask(unsigned MMask, SMLoc S) {
2144 ARMOperand *Op = new ARMOperand(k_MSRMask);
2145 Op->MMask.Val = MMask;
2152 } // end anonymous namespace.
2154 void ARMOperand::print(raw_ostream &OS) const {
2157 OS << "<fpimm " << getFPImm() << "(" << ARM_AM::getFPImmFloat(getFPImm())
2161 OS << "<ARMCC::" << ARMCondCodeToString(getCondCode()) << ">";
2164 OS << "<ccout " << getReg() << ">";
2166 case k_ITCondMask: {
2167 static const char *MaskStr[] = {
2168 "()", "(t)", "(e)", "(tt)", "(et)", "(te)", "(ee)", "(ttt)", "(ett)",
2169 "(tet)", "(eet)", "(tte)", "(ete)", "(tee)", "(eee)"
2171 assert((ITMask.Mask & 0xf) == ITMask.Mask);
2172 OS << "<it-mask " << MaskStr[ITMask.Mask] << ">";
2176 OS << "<coprocessor number: " << getCoproc() << ">";
2179 OS << "<coprocessor register: " << getCoproc() << ">";
2181 case k_CoprocOption:
2182 OS << "<coprocessor option: " << CoprocOption.Val << ">";
2185 OS << "<mask: " << getMSRMask() << ">";
2188 getImm()->print(OS);
2190 case k_MemBarrierOpt:
2191 OS << "<ARM_MB::" << MemBOptToString(getMemBarrierOpt()) << ">";
2195 << " base:" << Memory.BaseRegNum;
2198 case k_PostIndexRegister:
2199 OS << "post-idx register " << (PostIdxReg.isAdd ? "" : "-")
2200 << PostIdxReg.RegNum;
2201 if (PostIdxReg.ShiftTy != ARM_AM::no_shift)
2202 OS << ARM_AM::getShiftOpcStr(PostIdxReg.ShiftTy) << " "
2203 << PostIdxReg.ShiftImm;
2206 case k_ProcIFlags: {
2207 OS << "<ARM_PROC::";
2208 unsigned IFlags = getProcIFlags();
2209 for (int i=2; i >= 0; --i)
2210 if (IFlags & (1 << i))
2211 OS << ARM_PROC::IFlagsToString(1 << i);
2216 OS << "<register " << getReg() << ">";
2218 case k_ShifterImmediate:
2219 OS << "<shift " << (ShifterImm.isASR ? "asr" : "lsl")
2220 << " #" << ShifterImm.Imm << ">";
2222 case k_ShiftedRegister:
2223 OS << "<so_reg_reg "
2224 << RegShiftedReg.SrcReg << " "
2225 << ARM_AM::getShiftOpcStr(RegShiftedReg.ShiftTy)
2226 << " " << RegShiftedReg.ShiftReg << ">";
2228 case k_ShiftedImmediate:
2229 OS << "<so_reg_imm "
2230 << RegShiftedImm.SrcReg << " "
2231 << ARM_AM::getShiftOpcStr(RegShiftedImm.ShiftTy)
2232 << " #" << RegShiftedImm.ShiftImm << ">";
2234 case k_RotateImmediate:
2235 OS << "<ror " << " #" << (RotImm.Imm * 8) << ">";
2237 case k_BitfieldDescriptor:
2238 OS << "<bitfield " << "lsb: " << Bitfield.LSB
2239 << ", width: " << Bitfield.Width << ">";
2241 case k_RegisterList:
2242 case k_DPRRegisterList:
2243 case k_SPRRegisterList: {
2244 OS << "<register_list ";
2246 const SmallVectorImpl<unsigned> &RegList = getRegList();
2247 for (SmallVectorImpl<unsigned>::const_iterator
2248 I = RegList.begin(), E = RegList.end(); I != E; ) {
2250 if (++I < E) OS << ", ";
2257 OS << "<vector_list " << VectorList.Count << " * "
2258 << VectorList.RegNum << ">";
2260 case k_VectorListAllLanes:
2261 OS << "<vector_list(all lanes) " << VectorList.Count << " * "
2262 << VectorList.RegNum << ">";
2264 case k_VectorListIndexed:
2265 OS << "<vector_list(lane " << VectorList.LaneIndex << ") "
2266 << VectorList.Count << " * " << VectorList.RegNum << ">";
2269 OS << "'" << getToken() << "'";
2272 OS << "<vectorindex " << getVectorIndex() << ">";
2277 /// @name Auto-generated Match Functions
2280 static unsigned MatchRegisterName(StringRef Name);
2284 bool ARMAsmParser::ParseRegister(unsigned &RegNo,
2285 SMLoc &StartLoc, SMLoc &EndLoc) {
2286 StartLoc = Parser.getTok().getLoc();
2287 RegNo = tryParseRegister();
2288 EndLoc = Parser.getTok().getLoc();
2290 return (RegNo == (unsigned)-1);
2293 /// Try to parse a register name. The token must be an Identifier when called,
2294 /// and if it is a register name the token is eaten and the register number is
2295 /// returned. Otherwise return -1.
2297 int ARMAsmParser::tryParseRegister() {
2298 const AsmToken &Tok = Parser.getTok();
2299 if (Tok.isNot(AsmToken::Identifier)) return -1;
2301 std::string lowerCase = Tok.getString().lower();
2302 unsigned RegNum = MatchRegisterName(lowerCase);
2304 RegNum = StringSwitch<unsigned>(lowerCase)
2305 .Case("r13", ARM::SP)
2306 .Case("r14", ARM::LR)
2307 .Case("r15", ARM::PC)
2308 .Case("ip", ARM::R12)
2309 // Additional register name aliases for 'gas' compatibility.
2310 .Case("a1", ARM::R0)
2311 .Case("a2", ARM::R1)
2312 .Case("a3", ARM::R2)
2313 .Case("a4", ARM::R3)
2314 .Case("v1", ARM::R4)
2315 .Case("v2", ARM::R5)
2316 .Case("v3", ARM::R6)
2317 .Case("v4", ARM::R7)
2318 .Case("v5", ARM::R8)
2319 .Case("v6", ARM::R9)
2320 .Case("v7", ARM::R10)
2321 .Case("v8", ARM::R11)
2322 .Case("sb", ARM::R9)
2323 .Case("sl", ARM::R10)
2324 .Case("fp", ARM::R11)
2328 // Check for aliases registered via .req.
2329 StringMap<unsigned>::const_iterator Entry =
2330 RegisterReqs.find(Tok.getIdentifier());
2331 // If no match, return failure.
2332 if (Entry == RegisterReqs.end())
2334 Parser.Lex(); // Eat identifier token.
2335 return Entry->getValue();
2338 Parser.Lex(); // Eat identifier token.
2343 // Try to parse a shifter (e.g., "lsl <amt>"). On success, return 0.
2344 // If a recoverable error occurs, return 1. If an irrecoverable error
2345 // occurs, return -1. An irrecoverable error is one where tokens have been
2346 // consumed in the process of trying to parse the shifter (i.e., when it is
2347 // indeed a shifter operand, but malformed).
2348 int ARMAsmParser::tryParseShiftRegister(
2349 SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2350 SMLoc S = Parser.getTok().getLoc();
2351 const AsmToken &Tok = Parser.getTok();
2352 assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
2354 std::string lowerCase = Tok.getString().lower();
2355 ARM_AM::ShiftOpc ShiftTy = StringSwitch<ARM_AM::ShiftOpc>(lowerCase)
2356 .Case("asl", ARM_AM::lsl)
2357 .Case("lsl", ARM_AM::lsl)
2358 .Case("lsr", ARM_AM::lsr)
2359 .Case("asr", ARM_AM::asr)
2360 .Case("ror", ARM_AM::ror)
2361 .Case("rrx", ARM_AM::rrx)
2362 .Default(ARM_AM::no_shift);
2364 if (ShiftTy == ARM_AM::no_shift)
2367 Parser.Lex(); // Eat the operator.
2369 // The source register for the shift has already been added to the
2370 // operand list, so we need to pop it off and combine it into the shifted
2371 // register operand instead.
2372 OwningPtr<ARMOperand> PrevOp((ARMOperand*)Operands.pop_back_val());
2373 if (!PrevOp->isReg())
2374 return Error(PrevOp->getStartLoc(), "shift must be of a register");
2375 int SrcReg = PrevOp->getReg();
2378 if (ShiftTy == ARM_AM::rrx) {
2379 // RRX Doesn't have an explicit shift amount. The encoder expects
2380 // the shift register to be the same as the source register. Seems odd,
2384 // Figure out if this is shifted by a constant or a register (for non-RRX).
2385 if (Parser.getTok().is(AsmToken::Hash) ||
2386 Parser.getTok().is(AsmToken::Dollar)) {
2387 Parser.Lex(); // Eat hash.
2388 SMLoc ImmLoc = Parser.getTok().getLoc();
2389 const MCExpr *ShiftExpr = 0;
2390 if (getParser().ParseExpression(ShiftExpr)) {
2391 Error(ImmLoc, "invalid immediate shift value");
2394 // The expression must be evaluatable as an immediate.
2395 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftExpr);
2397 Error(ImmLoc, "invalid immediate shift value");
2400 // Range check the immediate.
2401 // lsl, ror: 0 <= imm <= 31
2402 // lsr, asr: 0 <= imm <= 32
2403 Imm = CE->getValue();
2405 ((ShiftTy == ARM_AM::lsl || ShiftTy == ARM_AM::ror) && Imm > 31) ||
2406 ((ShiftTy == ARM_AM::lsr || ShiftTy == ARM_AM::asr) && Imm > 32)) {
2407 Error(ImmLoc, "immediate shift value out of range");
2410 } else if (Parser.getTok().is(AsmToken::Identifier)) {
2411 ShiftReg = tryParseRegister();
2412 SMLoc L = Parser.getTok().getLoc();
2413 if (ShiftReg == -1) {
2414 Error (L, "expected immediate or register in shift operand");
2418 Error (Parser.getTok().getLoc(),
2419 "expected immediate or register in shift operand");
2424 if (ShiftReg && ShiftTy != ARM_AM::rrx)
2425 Operands.push_back(ARMOperand::CreateShiftedRegister(ShiftTy, SrcReg,
2427 S, Parser.getTok().getLoc()));
2429 Operands.push_back(ARMOperand::CreateShiftedImmediate(ShiftTy, SrcReg, Imm,
2430 S, Parser.getTok().getLoc()));
2436 /// Try to parse a register name. The token must be an Identifier when called.
2437 /// If it's a register, an AsmOperand is created. Another AsmOperand is created
2438 /// if there is a "writeback". 'true' if it's not a register.
2440 /// TODO this is likely to change to allow different register types and or to
2441 /// parse for a specific register type.
2443 tryParseRegisterWithWriteBack(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2444 SMLoc S = Parser.getTok().getLoc();
2445 int RegNo = tryParseRegister();
2449 Operands.push_back(ARMOperand::CreateReg(RegNo, S, Parser.getTok().getLoc()));
2451 const AsmToken &ExclaimTok = Parser.getTok();
2452 if (ExclaimTok.is(AsmToken::Exclaim)) {
2453 Operands.push_back(ARMOperand::CreateToken(ExclaimTok.getString(),
2454 ExclaimTok.getLoc()));
2455 Parser.Lex(); // Eat exclaim token
2459 // Also check for an index operand. This is only legal for vector registers,
2460 // but that'll get caught OK in operand matching, so we don't need to
2461 // explicitly filter everything else out here.
2462 if (Parser.getTok().is(AsmToken::LBrac)) {
2463 SMLoc SIdx = Parser.getTok().getLoc();
2464 Parser.Lex(); // Eat left bracket token.
2466 const MCExpr *ImmVal;
2467 if (getParser().ParseExpression(ImmVal))
2468 return MatchOperand_ParseFail;
2469 const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal);
2471 TokError("immediate value expected for vector index");
2472 return MatchOperand_ParseFail;
2475 SMLoc E = Parser.getTok().getLoc();
2476 if (Parser.getTok().isNot(AsmToken::RBrac)) {
2477 Error(E, "']' expected");
2478 return MatchOperand_ParseFail;
2481 Parser.Lex(); // Eat right bracket token.
2483 Operands.push_back(ARMOperand::CreateVectorIndex(MCE->getValue(),
2491 /// MatchCoprocessorOperandName - Try to parse an coprocessor related
2492 /// instruction with a symbolic operand name. Example: "p1", "p7", "c3",
2494 static int MatchCoprocessorOperandName(StringRef Name, char CoprocOp) {
2495 // Use the same layout as the tablegen'erated register name matcher. Ugly,
2497 switch (Name.size()) {
2500 if (Name[0] != CoprocOp)
2517 if (Name[0] != CoprocOp || Name[1] != '1')
2521 case '0': return 10;
2522 case '1': return 11;
2523 case '2': return 12;
2524 case '3': return 13;
2525 case '4': return 14;
2526 case '5': return 15;
2534 /// parseITCondCode - Try to parse a condition code for an IT instruction.
2535 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2536 parseITCondCode(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2537 SMLoc S = Parser.getTok().getLoc();
2538 const AsmToken &Tok = Parser.getTok();
2539 if (!Tok.is(AsmToken::Identifier))
2540 return MatchOperand_NoMatch;
2541 unsigned CC = StringSwitch<unsigned>(Tok.getString())
2542 .Case("eq", ARMCC::EQ)
2543 .Case("ne", ARMCC::NE)
2544 .Case("hs", ARMCC::HS)
2545 .Case("cs", ARMCC::HS)
2546 .Case("lo", ARMCC::LO)
2547 .Case("cc", ARMCC::LO)
2548 .Case("mi", ARMCC::MI)
2549 .Case("pl", ARMCC::PL)
2550 .Case("vs", ARMCC::VS)
2551 .Case("vc", ARMCC::VC)
2552 .Case("hi", ARMCC::HI)
2553 .Case("ls", ARMCC::LS)
2554 .Case("ge", ARMCC::GE)
2555 .Case("lt", ARMCC::LT)
2556 .Case("gt", ARMCC::GT)
2557 .Case("le", ARMCC::LE)
2558 .Case("al", ARMCC::AL)
2561 return MatchOperand_NoMatch;
2562 Parser.Lex(); // Eat the token.
2564 Operands.push_back(ARMOperand::CreateCondCode(ARMCC::CondCodes(CC), S));
2566 return MatchOperand_Success;
2569 /// parseCoprocNumOperand - Try to parse an coprocessor number operand. The
2570 /// token must be an Identifier when called, and if it is a coprocessor
2571 /// number, the token is eaten and the operand is added to the operand list.
2572 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2573 parseCoprocNumOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2574 SMLoc S = Parser.getTok().getLoc();
2575 const AsmToken &Tok = Parser.getTok();
2576 if (Tok.isNot(AsmToken::Identifier))
2577 return MatchOperand_NoMatch;
2579 int Num = MatchCoprocessorOperandName(Tok.getString(), 'p');
2581 return MatchOperand_NoMatch;
2583 Parser.Lex(); // Eat identifier token.
2584 Operands.push_back(ARMOperand::CreateCoprocNum(Num, S));
2585 return MatchOperand_Success;
2588 /// parseCoprocRegOperand - Try to parse an coprocessor register operand. The
2589 /// token must be an Identifier when called, and if it is a coprocessor
2590 /// number, the token is eaten and the operand is added to the operand list.
2591 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2592 parseCoprocRegOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2593 SMLoc S = Parser.getTok().getLoc();
2594 const AsmToken &Tok = Parser.getTok();
2595 if (Tok.isNot(AsmToken::Identifier))
2596 return MatchOperand_NoMatch;
2598 int Reg = MatchCoprocessorOperandName(Tok.getString(), 'c');
2600 return MatchOperand_NoMatch;
2602 Parser.Lex(); // Eat identifier token.
2603 Operands.push_back(ARMOperand::CreateCoprocReg(Reg, S));
2604 return MatchOperand_Success;
2607 /// parseCoprocOptionOperand - Try to parse an coprocessor option operand.
2608 /// coproc_option : '{' imm0_255 '}'
2609 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2610 parseCoprocOptionOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2611 SMLoc S = Parser.getTok().getLoc();
2613 // If this isn't a '{', this isn't a coprocessor immediate operand.
2614 if (Parser.getTok().isNot(AsmToken::LCurly))
2615 return MatchOperand_NoMatch;
2616 Parser.Lex(); // Eat the '{'
2619 SMLoc Loc = Parser.getTok().getLoc();
2620 if (getParser().ParseExpression(Expr)) {
2621 Error(Loc, "illegal expression");
2622 return MatchOperand_ParseFail;
2624 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
2625 if (!CE || CE->getValue() < 0 || CE->getValue() > 255) {
2626 Error(Loc, "coprocessor option must be an immediate in range [0, 255]");
2627 return MatchOperand_ParseFail;
2629 int Val = CE->getValue();
2631 // Check for and consume the closing '}'
2632 if (Parser.getTok().isNot(AsmToken::RCurly))
2633 return MatchOperand_ParseFail;
2634 SMLoc E = Parser.getTok().getLoc();
2635 Parser.Lex(); // Eat the '}'
2637 Operands.push_back(ARMOperand::CreateCoprocOption(Val, S, E));
2638 return MatchOperand_Success;
2641 // For register list parsing, we need to map from raw GPR register numbering
2642 // to the enumeration values. The enumeration values aren't sorted by
2643 // register number due to our using "sp", "lr" and "pc" as canonical names.
2644 static unsigned getNextRegister(unsigned Reg) {
2645 // If this is a GPR, we need to do it manually, otherwise we can rely
2646 // on the sort ordering of the enumeration since the other reg-classes
2648 if (!ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
2651 default: assert(0 && "Invalid GPR number!");
2652 case ARM::R0: return ARM::R1; case ARM::R1: return ARM::R2;
2653 case ARM::R2: return ARM::R3; case ARM::R3: return ARM::R4;
2654 case ARM::R4: return ARM::R5; case ARM::R5: return ARM::R6;
2655 case ARM::R6: return ARM::R7; case ARM::R7: return ARM::R8;
2656 case ARM::R8: return ARM::R9; case ARM::R9: return ARM::R10;
2657 case ARM::R10: return ARM::R11; case ARM::R11: return ARM::R12;
2658 case ARM::R12: return ARM::SP; case ARM::SP: return ARM::LR;
2659 case ARM::LR: return ARM::PC; case ARM::PC: return ARM::R0;
2663 // Return the low-subreg of a given Q register.
2664 static unsigned getDRegFromQReg(unsigned QReg) {
2666 default: llvm_unreachable("expected a Q register!");
2667 case ARM::Q0: return ARM::D0;
2668 case ARM::Q1: return ARM::D2;
2669 case ARM::Q2: return ARM::D4;
2670 case ARM::Q3: return ARM::D6;
2671 case ARM::Q4: return ARM::D8;
2672 case ARM::Q5: return ARM::D10;
2673 case ARM::Q6: return ARM::D12;
2674 case ARM::Q7: return ARM::D14;
2675 case ARM::Q8: return ARM::D16;
2676 case ARM::Q9: return ARM::D18;
2677 case ARM::Q10: return ARM::D20;
2678 case ARM::Q11: return ARM::D22;
2679 case ARM::Q12: return ARM::D24;
2680 case ARM::Q13: return ARM::D26;
2681 case ARM::Q14: return ARM::D28;
2682 case ARM::Q15: return ARM::D30;
2686 /// Parse a register list.
2688 parseRegisterList(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2689 assert(Parser.getTok().is(AsmToken::LCurly) &&
2690 "Token is not a Left Curly Brace");
2691 SMLoc S = Parser.getTok().getLoc();
2692 Parser.Lex(); // Eat '{' token.
2693 SMLoc RegLoc = Parser.getTok().getLoc();
2695 // Check the first register in the list to see what register class
2696 // this is a list of.
2697 int Reg = tryParseRegister();
2699 return Error(RegLoc, "register expected");
2701 // The reglist instructions have at most 16 registers, so reserve
2702 // space for that many.
2703 SmallVector<std::pair<unsigned, SMLoc>, 16> Registers;
2705 // Allow Q regs and just interpret them as the two D sub-registers.
2706 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2707 Reg = getDRegFromQReg(Reg);
2708 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2711 const MCRegisterClass *RC;
2712 if (ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
2713 RC = &ARMMCRegisterClasses[ARM::GPRRegClassID];
2714 else if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg))
2715 RC = &ARMMCRegisterClasses[ARM::DPRRegClassID];
2716 else if (ARMMCRegisterClasses[ARM::SPRRegClassID].contains(Reg))
2717 RC = &ARMMCRegisterClasses[ARM::SPRRegClassID];
2719 return Error(RegLoc, "invalid register in register list");
2721 // Store the register.
2722 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2724 // This starts immediately after the first register token in the list,
2725 // so we can see either a comma or a minus (range separator) as a legal
2727 while (Parser.getTok().is(AsmToken::Comma) ||
2728 Parser.getTok().is(AsmToken::Minus)) {
2729 if (Parser.getTok().is(AsmToken::Minus)) {
2730 Parser.Lex(); // Eat the minus.
2731 SMLoc EndLoc = Parser.getTok().getLoc();
2732 int EndReg = tryParseRegister();
2734 return Error(EndLoc, "register expected");
2735 // Allow Q regs and just interpret them as the two D sub-registers.
2736 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(EndReg))
2737 EndReg = getDRegFromQReg(EndReg) + 1;
2738 // If the register is the same as the start reg, there's nothing
2742 // The register must be in the same register class as the first.
2743 if (!RC->contains(EndReg))
2744 return Error(EndLoc, "invalid register in register list");
2745 // Ranges must go from low to high.
2746 if (getARMRegisterNumbering(Reg) > getARMRegisterNumbering(EndReg))
2747 return Error(EndLoc, "bad range in register list");
2749 // Add all the registers in the range to the register list.
2750 while (Reg != EndReg) {
2751 Reg = getNextRegister(Reg);
2752 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2756 Parser.Lex(); // Eat the comma.
2757 RegLoc = Parser.getTok().getLoc();
2759 const AsmToken RegTok = Parser.getTok();
2760 Reg = tryParseRegister();
2762 return Error(RegLoc, "register expected");
2763 // Allow Q regs and just interpret them as the two D sub-registers.
2764 bool isQReg = false;
2765 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2766 Reg = getDRegFromQReg(Reg);
2769 // The register must be in the same register class as the first.
2770 if (!RC->contains(Reg))
2771 return Error(RegLoc, "invalid register in register list");
2772 // List must be monotonically increasing.
2773 if (getARMRegisterNumbering(Reg) < getARMRegisterNumbering(OldReg))
2774 return Error(RegLoc, "register list not in ascending order");
2775 if (getARMRegisterNumbering(Reg) == getARMRegisterNumbering(OldReg)) {
2776 Warning(RegLoc, "duplicated register (" + RegTok.getString() +
2777 ") in register list");
2780 // VFP register lists must also be contiguous.
2781 // It's OK to use the enumeration values directly here rather, as the
2782 // VFP register classes have the enum sorted properly.
2783 if (RC != &ARMMCRegisterClasses[ARM::GPRRegClassID] &&
2785 return Error(RegLoc, "non-contiguous register range");
2786 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2788 Registers.push_back(std::pair<unsigned, SMLoc>(++Reg, RegLoc));
2791 SMLoc E = Parser.getTok().getLoc();
2792 if (Parser.getTok().isNot(AsmToken::RCurly))
2793 return Error(E, "'}' expected");
2794 Parser.Lex(); // Eat '}' token.
2796 // Push the register list operand.
2797 Operands.push_back(ARMOperand::CreateRegList(Registers, S, E));
2799 // The ARM system instruction variants for LDM/STM have a '^' token here.
2800 if (Parser.getTok().is(AsmToken::Caret)) {
2801 Operands.push_back(ARMOperand::CreateToken("^",Parser.getTok().getLoc()));
2802 Parser.Lex(); // Eat '^' token.
2808 // Helper function to parse the lane index for vector lists.
2809 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2810 parseVectorLane(VectorLaneTy &LaneKind, unsigned &Index) {
2811 Index = 0; // Always return a defined index value.
2812 if (Parser.getTok().is(AsmToken::LBrac)) {
2813 Parser.Lex(); // Eat the '['.
2814 if (Parser.getTok().is(AsmToken::RBrac)) {
2815 // "Dn[]" is the 'all lanes' syntax.
2816 LaneKind = AllLanes;
2817 Parser.Lex(); // Eat the ']'.
2818 return MatchOperand_Success;
2820 if (Parser.getTok().is(AsmToken::Integer)) {
2821 int64_t Val = Parser.getTok().getIntVal();
2822 // Make this range check context sensitive for .8, .16, .32.
2823 if (Val < 0 && Val > 7)
2824 Error(Parser.getTok().getLoc(), "lane index out of range");
2826 LaneKind = IndexedLane;
2827 Parser.Lex(); // Eat the token;
2828 if (Parser.getTok().isNot(AsmToken::RBrac))
2829 Error(Parser.getTok().getLoc(), "']' expected");
2830 Parser.Lex(); // Eat the ']'.
2831 return MatchOperand_Success;
2833 Error(Parser.getTok().getLoc(), "lane index must be empty or an integer");
2834 return MatchOperand_ParseFail;
2837 return MatchOperand_Success;
2840 // parse a vector register list
2841 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2842 parseVectorList(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2843 VectorLaneTy LaneKind;
2845 SMLoc S = Parser.getTok().getLoc();
2846 // As an extension (to match gas), support a plain D register or Q register
2847 // (without encosing curly braces) as a single or double entry list,
2849 if (Parser.getTok().is(AsmToken::Identifier)) {
2850 int Reg = tryParseRegister();
2852 return MatchOperand_NoMatch;
2853 SMLoc E = Parser.getTok().getLoc();
2854 if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg)) {
2855 OperandMatchResultTy Res = parseVectorLane(LaneKind, LaneIndex);
2856 if (Res != MatchOperand_Success)
2860 assert(0 && "unexpected lane kind!");
2862 E = Parser.getTok().getLoc();
2863 Operands.push_back(ARMOperand::CreateVectorList(Reg, 1, false, S, E));
2866 E = Parser.getTok().getLoc();
2867 Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 1, S, E));
2870 Operands.push_back(ARMOperand::CreateVectorListIndexed(Reg, 1,
2875 return MatchOperand_Success;
2877 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2878 Reg = getDRegFromQReg(Reg);
2879 OperandMatchResultTy Res = parseVectorLane(LaneKind, LaneIndex);
2880 if (Res != MatchOperand_Success)
2884 assert(0 && "unexpected lane kind!");
2886 E = Parser.getTok().getLoc();
2887 Operands.push_back(ARMOperand::CreateVectorList(Reg, 2, false, S, E));
2890 E = Parser.getTok().getLoc();
2891 Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 2, S, E));
2894 Operands.push_back(ARMOperand::CreateVectorListIndexed(Reg, 2,
2899 return MatchOperand_Success;
2901 Error(S, "vector register expected");
2902 return MatchOperand_ParseFail;
2905 if (Parser.getTok().isNot(AsmToken::LCurly))
2906 return MatchOperand_NoMatch;
2908 Parser.Lex(); // Eat '{' token.
2909 SMLoc RegLoc = Parser.getTok().getLoc();
2911 int Reg = tryParseRegister();
2913 Error(RegLoc, "register expected");
2914 return MatchOperand_ParseFail;
2918 unsigned FirstReg = Reg;
2919 // The list is of D registers, but we also allow Q regs and just interpret
2920 // them as the two D sub-registers.
2921 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2922 FirstReg = Reg = getDRegFromQReg(Reg);
2923 Spacing = 1; // double-spacing requires explicit D registers, otherwise
2924 // it's ambiguous with four-register single spaced.
2928 if (parseVectorLane(LaneKind, LaneIndex) != MatchOperand_Success)
2929 return MatchOperand_ParseFail;
2931 while (Parser.getTok().is(AsmToken::Comma) ||
2932 Parser.getTok().is(AsmToken::Minus)) {
2933 if (Parser.getTok().is(AsmToken::Minus)) {
2935 Spacing = 1; // Register range implies a single spaced list.
2936 else if (Spacing == 2) {
2937 Error(Parser.getTok().getLoc(),
2938 "sequential registers in double spaced list");
2939 return MatchOperand_ParseFail;
2941 Parser.Lex(); // Eat the minus.
2942 SMLoc EndLoc = Parser.getTok().getLoc();
2943 int EndReg = tryParseRegister();
2945 Error(EndLoc, "register expected");
2946 return MatchOperand_ParseFail;
2948 // Allow Q regs and just interpret them as the two D sub-registers.
2949 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(EndReg))
2950 EndReg = getDRegFromQReg(EndReg) + 1;
2951 // If the register is the same as the start reg, there's nothing
2955 // The register must be in the same register class as the first.
2956 if (!ARMMCRegisterClasses[ARM::DPRRegClassID].contains(EndReg)) {
2957 Error(EndLoc, "invalid register in register list");
2958 return MatchOperand_ParseFail;
2960 // Ranges must go from low to high.
2962 Error(EndLoc, "bad range in register list");
2963 return MatchOperand_ParseFail;
2965 // Parse the lane specifier if present.
2966 VectorLaneTy NextLaneKind;
2967 unsigned NextLaneIndex;
2968 if (parseVectorLane(NextLaneKind, NextLaneIndex) != MatchOperand_Success)
2969 return MatchOperand_ParseFail;
2970 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
2971 Error(EndLoc, "mismatched lane index in register list");
2972 return MatchOperand_ParseFail;
2974 EndLoc = Parser.getTok().getLoc();
2976 // Add all the registers in the range to the register list.
2977 Count += EndReg - Reg;
2981 Parser.Lex(); // Eat the comma.
2982 RegLoc = Parser.getTok().getLoc();
2984 Reg = tryParseRegister();
2986 Error(RegLoc, "register expected");
2987 return MatchOperand_ParseFail;
2989 // vector register lists must be contiguous.
2990 // It's OK to use the enumeration values directly here rather, as the
2991 // VFP register classes have the enum sorted properly.
2993 // The list is of D registers, but we also allow Q regs and just interpret
2994 // them as the two D sub-registers.
2995 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2997 Spacing = 1; // Register range implies a single spaced list.
2998 else if (Spacing == 2) {
3000 "invalid register in double-spaced list (must be 'D' register')");
3001 return MatchOperand_ParseFail;
3003 Reg = getDRegFromQReg(Reg);
3004 if (Reg != OldReg + 1) {
3005 Error(RegLoc, "non-contiguous register range");
3006 return MatchOperand_ParseFail;
3010 // Parse the lane specifier if present.
3011 VectorLaneTy NextLaneKind;
3012 unsigned NextLaneIndex;
3013 SMLoc EndLoc = Parser.getTok().getLoc();
3014 if (parseVectorLane(NextLaneKind, NextLaneIndex) != MatchOperand_Success)
3015 return MatchOperand_ParseFail;
3016 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
3017 Error(EndLoc, "mismatched lane index in register list");
3018 return MatchOperand_ParseFail;
3022 // Normal D register.
3023 // Figure out the register spacing (single or double) of the list if
3024 // we don't know it already.
3026 Spacing = 1 + (Reg == OldReg + 2);
3028 // Just check that it's contiguous and keep going.
3029 if (Reg != OldReg + Spacing) {
3030 Error(RegLoc, "non-contiguous register range");
3031 return MatchOperand_ParseFail;
3034 // Parse the lane specifier if present.
3035 VectorLaneTy NextLaneKind;
3036 unsigned NextLaneIndex;
3037 SMLoc EndLoc = Parser.getTok().getLoc();
3038 if (parseVectorLane(NextLaneKind, NextLaneIndex) != MatchOperand_Success)
3039 return MatchOperand_ParseFail;
3040 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
3041 Error(EndLoc, "mismatched lane index in register list");
3042 return MatchOperand_ParseFail;
3046 SMLoc E = Parser.getTok().getLoc();
3047 if (Parser.getTok().isNot(AsmToken::RCurly)) {
3048 Error(E, "'}' expected");
3049 return MatchOperand_ParseFail;
3051 Parser.Lex(); // Eat '}' token.
3055 assert(0 && "unexpected lane kind in register list.");
3057 Operands.push_back(ARMOperand::CreateVectorList(FirstReg, Count,
3058 (Spacing == 2), S, E));
3061 Operands.push_back(ARMOperand::CreateVectorListAllLanes(FirstReg, Count,
3065 Operands.push_back(ARMOperand::CreateVectorListIndexed(FirstReg, Count,
3071 return MatchOperand_Success;
3074 /// parseMemBarrierOptOperand - Try to parse DSB/DMB data barrier options.
3075 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3076 parseMemBarrierOptOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3077 SMLoc S = Parser.getTok().getLoc();
3078 const AsmToken &Tok = Parser.getTok();
3079 assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
3080 StringRef OptStr = Tok.getString();
3082 unsigned Opt = StringSwitch<unsigned>(OptStr.slice(0, OptStr.size()))
3083 .Case("sy", ARM_MB::SY)
3084 .Case("st", ARM_MB::ST)
3085 .Case("sh", ARM_MB::ISH)
3086 .Case("ish", ARM_MB::ISH)
3087 .Case("shst", ARM_MB::ISHST)
3088 .Case("ishst", ARM_MB::ISHST)
3089 .Case("nsh", ARM_MB::NSH)
3090 .Case("un", ARM_MB::NSH)
3091 .Case("nshst", ARM_MB::NSHST)
3092 .Case("unst", ARM_MB::NSHST)
3093 .Case("osh", ARM_MB::OSH)
3094 .Case("oshst", ARM_MB::OSHST)
3098 return MatchOperand_NoMatch;
3100 Parser.Lex(); // Eat identifier token.
3101 Operands.push_back(ARMOperand::CreateMemBarrierOpt((ARM_MB::MemBOpt)Opt, S));
3102 return MatchOperand_Success;
3105 /// parseProcIFlagsOperand - Try to parse iflags from CPS instruction.
3106 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3107 parseProcIFlagsOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3108 SMLoc S = Parser.getTok().getLoc();
3109 const AsmToken &Tok = Parser.getTok();
3110 assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
3111 StringRef IFlagsStr = Tok.getString();
3113 // An iflags string of "none" is interpreted to mean that none of the AIF
3114 // bits are set. Not a terribly useful instruction, but a valid encoding.
3115 unsigned IFlags = 0;
3116 if (IFlagsStr != "none") {
3117 for (int i = 0, e = IFlagsStr.size(); i != e; ++i) {
3118 unsigned Flag = StringSwitch<unsigned>(IFlagsStr.substr(i, 1))
3119 .Case("a", ARM_PROC::A)
3120 .Case("i", ARM_PROC::I)
3121 .Case("f", ARM_PROC::F)
3124 // If some specific iflag is already set, it means that some letter is
3125 // present more than once, this is not acceptable.
3126 if (Flag == ~0U || (IFlags & Flag))
3127 return MatchOperand_NoMatch;
3133 Parser.Lex(); // Eat identifier token.
3134 Operands.push_back(ARMOperand::CreateProcIFlags((ARM_PROC::IFlags)IFlags, S));
3135 return MatchOperand_Success;
3138 /// parseMSRMaskOperand - Try to parse mask flags from MSR instruction.
3139 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3140 parseMSRMaskOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3141 SMLoc S = Parser.getTok().getLoc();
3142 const AsmToken &Tok = Parser.getTok();
3143 assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
3144 StringRef Mask = Tok.getString();
3147 // See ARMv6-M 10.1.1
3148 unsigned FlagsVal = StringSwitch<unsigned>(Mask)
3158 .Case("primask", 16)
3159 .Case("basepri", 17)
3160 .Case("basepri_max", 18)
3161 .Case("faultmask", 19)
3162 .Case("control", 20)
3165 if (FlagsVal == ~0U)
3166 return MatchOperand_NoMatch;
3168 if (!hasV7Ops() && FlagsVal >= 17 && FlagsVal <= 19)
3169 // basepri, basepri_max and faultmask only valid for V7m.
3170 return MatchOperand_NoMatch;
3172 Parser.Lex(); // Eat identifier token.
3173 Operands.push_back(ARMOperand::CreateMSRMask(FlagsVal, S));
3174 return MatchOperand_Success;
3177 // Split spec_reg from flag, example: CPSR_sxf => "CPSR" and "sxf"
3178 size_t Start = 0, Next = Mask.find('_');
3179 StringRef Flags = "";
3180 std::string SpecReg = Mask.slice(Start, Next).lower();
3181 if (Next != StringRef::npos)
3182 Flags = Mask.slice(Next+1, Mask.size());
3184 // FlagsVal contains the complete mask:
3186 // 4: Special Reg (cpsr, apsr => 0; spsr => 1)
3187 unsigned FlagsVal = 0;
3189 if (SpecReg == "apsr") {
3190 FlagsVal = StringSwitch<unsigned>(Flags)
3191 .Case("nzcvq", 0x8) // same as CPSR_f
3192 .Case("g", 0x4) // same as CPSR_s
3193 .Case("nzcvqg", 0xc) // same as CPSR_fs
3196 if (FlagsVal == ~0U) {
3198 return MatchOperand_NoMatch;
3200 FlagsVal = 8; // No flag
3202 } else if (SpecReg == "cpsr" || SpecReg == "spsr") {
3203 if (Flags == "all") // cpsr_all is an alias for cpsr_fc
3205 for (int i = 0, e = Flags.size(); i != e; ++i) {
3206 unsigned Flag = StringSwitch<unsigned>(Flags.substr(i, 1))
3213 // If some specific flag is already set, it means that some letter is
3214 // present more than once, this is not acceptable.
3215 if (FlagsVal == ~0U || (FlagsVal & Flag))
3216 return MatchOperand_NoMatch;
3219 } else // No match for special register.
3220 return MatchOperand_NoMatch;
3222 // Special register without flags is NOT equivalent to "fc" flags.
3223 // NOTE: This is a divergence from gas' behavior. Uncommenting the following
3224 // two lines would enable gas compatibility at the expense of breaking
3230 // Bit 4: Special Reg (cpsr, apsr => 0; spsr => 1)
3231 if (SpecReg == "spsr")
3234 Parser.Lex(); // Eat identifier token.
3235 Operands.push_back(ARMOperand::CreateMSRMask(FlagsVal, S));
3236 return MatchOperand_Success;
3239 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3240 parsePKHImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands, StringRef Op,
3241 int Low, int High) {
3242 const AsmToken &Tok = Parser.getTok();
3243 if (Tok.isNot(AsmToken::Identifier)) {
3244 Error(Parser.getTok().getLoc(), Op + " operand expected.");
3245 return MatchOperand_ParseFail;
3247 StringRef ShiftName = Tok.getString();
3248 std::string LowerOp = Op.lower();
3249 std::string UpperOp = Op.upper();
3250 if (ShiftName != LowerOp && ShiftName != UpperOp) {
3251 Error(Parser.getTok().getLoc(), Op + " operand expected.");
3252 return MatchOperand_ParseFail;
3254 Parser.Lex(); // Eat shift type token.
3256 // There must be a '#' and a shift amount.
3257 if (Parser.getTok().isNot(AsmToken::Hash) &&
3258 Parser.getTok().isNot(AsmToken::Dollar)) {
3259 Error(Parser.getTok().getLoc(), "'#' expected");
3260 return MatchOperand_ParseFail;
3262 Parser.Lex(); // Eat hash token.
3264 const MCExpr *ShiftAmount;
3265 SMLoc Loc = Parser.getTok().getLoc();
3266 if (getParser().ParseExpression(ShiftAmount)) {
3267 Error(Loc, "illegal expression");
3268 return MatchOperand_ParseFail;
3270 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
3272 Error(Loc, "constant expression expected");
3273 return MatchOperand_ParseFail;
3275 int Val = CE->getValue();
3276 if (Val < Low || Val > High) {
3277 Error(Loc, "immediate value out of range");
3278 return MatchOperand_ParseFail;
3281 Operands.push_back(ARMOperand::CreateImm(CE, Loc, Parser.getTok().getLoc()));
3283 return MatchOperand_Success;
3286 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3287 parseSetEndImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3288 const AsmToken &Tok = Parser.getTok();
3289 SMLoc S = Tok.getLoc();
3290 if (Tok.isNot(AsmToken::Identifier)) {
3291 Error(Tok.getLoc(), "'be' or 'le' operand expected");
3292 return MatchOperand_ParseFail;
3294 int Val = StringSwitch<int>(Tok.getString())
3298 Parser.Lex(); // Eat the token.
3301 Error(Tok.getLoc(), "'be' or 'le' operand expected");
3302 return MatchOperand_ParseFail;
3304 Operands.push_back(ARMOperand::CreateImm(MCConstantExpr::Create(Val,
3306 S, Parser.getTok().getLoc()));
3307 return MatchOperand_Success;
3310 /// parseShifterImm - Parse the shifter immediate operand for SSAT/USAT
3311 /// instructions. Legal values are:
3312 /// lsl #n 'n' in [0,31]
3313 /// asr #n 'n' in [1,32]
3314 /// n == 32 encoded as n == 0.
3315 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3316 parseShifterImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3317 const AsmToken &Tok = Parser.getTok();
3318 SMLoc S = Tok.getLoc();
3319 if (Tok.isNot(AsmToken::Identifier)) {
3320 Error(S, "shift operator 'asr' or 'lsl' expected");
3321 return MatchOperand_ParseFail;
3323 StringRef ShiftName = Tok.getString();
3325 if (ShiftName == "lsl" || ShiftName == "LSL")
3327 else if (ShiftName == "asr" || ShiftName == "ASR")
3330 Error(S, "shift operator 'asr' or 'lsl' expected");
3331 return MatchOperand_ParseFail;
3333 Parser.Lex(); // Eat the operator.
3335 // A '#' and a shift amount.
3336 if (Parser.getTok().isNot(AsmToken::Hash) &&
3337 Parser.getTok().isNot(AsmToken::Dollar)) {
3338 Error(Parser.getTok().getLoc(), "'#' expected");
3339 return MatchOperand_ParseFail;
3341 Parser.Lex(); // Eat hash token.
3343 const MCExpr *ShiftAmount;
3344 SMLoc E = Parser.getTok().getLoc();
3345 if (getParser().ParseExpression(ShiftAmount)) {
3346 Error(E, "malformed shift expression");
3347 return MatchOperand_ParseFail;
3349 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
3351 Error(E, "shift amount must be an immediate");
3352 return MatchOperand_ParseFail;
3355 int64_t Val = CE->getValue();
3357 // Shift amount must be in [1,32]
3358 if (Val < 1 || Val > 32) {
3359 Error(E, "'asr' shift amount must be in range [1,32]");
3360 return MatchOperand_ParseFail;
3362 // asr #32 encoded as asr #0, but is not allowed in Thumb2 mode.
3363 if (isThumb() && Val == 32) {
3364 Error(E, "'asr #32' shift amount not allowed in Thumb mode");
3365 return MatchOperand_ParseFail;
3367 if (Val == 32) Val = 0;
3369 // Shift amount must be in [1,32]
3370 if (Val < 0 || Val > 31) {
3371 Error(E, "'lsr' shift amount must be in range [0,31]");
3372 return MatchOperand_ParseFail;
3376 E = Parser.getTok().getLoc();
3377 Operands.push_back(ARMOperand::CreateShifterImm(isASR, Val, S, E));
3379 return MatchOperand_Success;
3382 /// parseRotImm - Parse the shifter immediate operand for SXTB/UXTB family
3383 /// of instructions. Legal values are:
3384 /// ror #n 'n' in {0, 8, 16, 24}
3385 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3386 parseRotImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3387 const AsmToken &Tok = Parser.getTok();
3388 SMLoc S = Tok.getLoc();
3389 if (Tok.isNot(AsmToken::Identifier))
3390 return MatchOperand_NoMatch;
3391 StringRef ShiftName = Tok.getString();
3392 if (ShiftName != "ror" && ShiftName != "ROR")
3393 return MatchOperand_NoMatch;
3394 Parser.Lex(); // Eat the operator.
3396 // A '#' and a rotate amount.
3397 if (Parser.getTok().isNot(AsmToken::Hash) &&
3398 Parser.getTok().isNot(AsmToken::Dollar)) {
3399 Error(Parser.getTok().getLoc(), "'#' expected");
3400 return MatchOperand_ParseFail;
3402 Parser.Lex(); // Eat hash token.
3404 const MCExpr *ShiftAmount;
3405 SMLoc E = Parser.getTok().getLoc();
3406 if (getParser().ParseExpression(ShiftAmount)) {
3407 Error(E, "malformed rotate expression");
3408 return MatchOperand_ParseFail;
3410 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
3412 Error(E, "rotate amount must be an immediate");
3413 return MatchOperand_ParseFail;
3416 int64_t Val = CE->getValue();
3417 // Shift amount must be in {0, 8, 16, 24} (0 is undocumented extension)
3418 // normally, zero is represented in asm by omitting the rotate operand
3420 if (Val != 8 && Val != 16 && Val != 24 && Val != 0) {
3421 Error(E, "'ror' rotate amount must be 8, 16, or 24");
3422 return MatchOperand_ParseFail;
3425 E = Parser.getTok().getLoc();
3426 Operands.push_back(ARMOperand::CreateRotImm(Val, S, E));
3428 return MatchOperand_Success;
3431 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3432 parseBitfield(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3433 SMLoc S = Parser.getTok().getLoc();
3434 // The bitfield descriptor is really two operands, the LSB and the width.
3435 if (Parser.getTok().isNot(AsmToken::Hash) &&
3436 Parser.getTok().isNot(AsmToken::Dollar)) {
3437 Error(Parser.getTok().getLoc(), "'#' expected");
3438 return MatchOperand_ParseFail;
3440 Parser.Lex(); // Eat hash token.
3442 const MCExpr *LSBExpr;
3443 SMLoc E = Parser.getTok().getLoc();
3444 if (getParser().ParseExpression(LSBExpr)) {
3445 Error(E, "malformed immediate expression");
3446 return MatchOperand_ParseFail;
3448 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(LSBExpr);
3450 Error(E, "'lsb' operand must be an immediate");
3451 return MatchOperand_ParseFail;
3454 int64_t LSB = CE->getValue();
3455 // The LSB must be in the range [0,31]
3456 if (LSB < 0 || LSB > 31) {
3457 Error(E, "'lsb' operand must be in the range [0,31]");
3458 return MatchOperand_ParseFail;
3460 E = Parser.getTok().getLoc();
3462 // Expect another immediate operand.
3463 if (Parser.getTok().isNot(AsmToken::Comma)) {
3464 Error(Parser.getTok().getLoc(), "too few operands");
3465 return MatchOperand_ParseFail;
3467 Parser.Lex(); // Eat hash token.
3468 if (Parser.getTok().isNot(AsmToken::Hash) &&
3469 Parser.getTok().isNot(AsmToken::Dollar)) {
3470 Error(Parser.getTok().getLoc(), "'#' expected");
3471 return MatchOperand_ParseFail;
3473 Parser.Lex(); // Eat hash token.
3475 const MCExpr *WidthExpr;
3476 if (getParser().ParseExpression(WidthExpr)) {
3477 Error(E, "malformed immediate expression");
3478 return MatchOperand_ParseFail;
3480 CE = dyn_cast<MCConstantExpr>(WidthExpr);
3482 Error(E, "'width' operand must be an immediate");
3483 return MatchOperand_ParseFail;
3486 int64_t Width = CE->getValue();
3487 // The LSB must be in the range [1,32-lsb]
3488 if (Width < 1 || Width > 32 - LSB) {
3489 Error(E, "'width' operand must be in the range [1,32-lsb]");
3490 return MatchOperand_ParseFail;
3492 E = Parser.getTok().getLoc();
3494 Operands.push_back(ARMOperand::CreateBitfield(LSB, Width, S, E));
3496 return MatchOperand_Success;
3499 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3500 parsePostIdxReg(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3501 // Check for a post-index addressing register operand. Specifically:
3502 // postidx_reg := '+' register {, shift}
3503 // | '-' register {, shift}
3504 // | register {, shift}
3506 // This method must return MatchOperand_NoMatch without consuming any tokens
3507 // in the case where there is no match, as other alternatives take other
3509 AsmToken Tok = Parser.getTok();
3510 SMLoc S = Tok.getLoc();
3511 bool haveEaten = false;
3514 if (Tok.is(AsmToken::Plus)) {
3515 Parser.Lex(); // Eat the '+' token.
3517 } else if (Tok.is(AsmToken::Minus)) {
3518 Parser.Lex(); // Eat the '-' token.
3522 if (Parser.getTok().is(AsmToken::Identifier))
3523 Reg = tryParseRegister();
3526 return MatchOperand_NoMatch;
3527 Error(Parser.getTok().getLoc(), "register expected");
3528 return MatchOperand_ParseFail;
3530 SMLoc E = Parser.getTok().getLoc();
3532 ARM_AM::ShiftOpc ShiftTy = ARM_AM::no_shift;
3533 unsigned ShiftImm = 0;
3534 if (Parser.getTok().is(AsmToken::Comma)) {
3535 Parser.Lex(); // Eat the ','.
3536 if (parseMemRegOffsetShift(ShiftTy, ShiftImm))
3537 return MatchOperand_ParseFail;
3540 Operands.push_back(ARMOperand::CreatePostIdxReg(Reg, isAdd, ShiftTy,
3543 return MatchOperand_Success;
3546 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3547 parseAM3Offset(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3548 // Check for a post-index addressing register operand. Specifically:
3549 // am3offset := '+' register
3556 // This method must return MatchOperand_NoMatch without consuming any tokens
3557 // in the case where there is no match, as other alternatives take other
3559 AsmToken Tok = Parser.getTok();
3560 SMLoc S = Tok.getLoc();
3562 // Do immediates first, as we always parse those if we have a '#'.
3563 if (Parser.getTok().is(AsmToken::Hash) ||
3564 Parser.getTok().is(AsmToken::Dollar)) {
3565 Parser.Lex(); // Eat the '#'.
3566 // Explicitly look for a '-', as we need to encode negative zero
3568 bool isNegative = Parser.getTok().is(AsmToken::Minus);
3569 const MCExpr *Offset;
3570 if (getParser().ParseExpression(Offset))
3571 return MatchOperand_ParseFail;
3572 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Offset);
3574 Error(S, "constant expression expected");
3575 return MatchOperand_ParseFail;
3577 SMLoc E = Tok.getLoc();
3578 // Negative zero is encoded as the flag value INT32_MIN.
3579 int32_t Val = CE->getValue();
3580 if (isNegative && Val == 0)
3584 ARMOperand::CreateImm(MCConstantExpr::Create(Val, getContext()), S, E));
3586 return MatchOperand_Success;
3590 bool haveEaten = false;
3593 if (Tok.is(AsmToken::Plus)) {
3594 Parser.Lex(); // Eat the '+' token.
3596 } else if (Tok.is(AsmToken::Minus)) {
3597 Parser.Lex(); // Eat the '-' token.
3601 if (Parser.getTok().is(AsmToken::Identifier))
3602 Reg = tryParseRegister();
3605 return MatchOperand_NoMatch;
3606 Error(Parser.getTok().getLoc(), "register expected");
3607 return MatchOperand_ParseFail;
3609 SMLoc E = Parser.getTok().getLoc();
3611 Operands.push_back(ARMOperand::CreatePostIdxReg(Reg, isAdd, ARM_AM::no_shift,
3614 return MatchOperand_Success;
3617 /// cvtT2LdrdPre - Convert parsed operands to MCInst.
3618 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3619 /// when they refer multiple MIOperands inside a single one.
3621 cvtT2LdrdPre(MCInst &Inst, unsigned Opcode,
3622 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3624 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3625 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3626 // Create a writeback register dummy placeholder.
3627 Inst.addOperand(MCOperand::CreateReg(0));
3629 ((ARMOperand*)Operands[4])->addMemImm8s4OffsetOperands(Inst, 2);
3631 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3635 /// cvtT2StrdPre - Convert parsed operands to MCInst.
3636 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3637 /// when they refer multiple MIOperands inside a single one.
3639 cvtT2StrdPre(MCInst &Inst, unsigned Opcode,
3640 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3641 // Create a writeback register dummy placeholder.
3642 Inst.addOperand(MCOperand::CreateReg(0));
3644 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3645 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3647 ((ARMOperand*)Operands[4])->addMemImm8s4OffsetOperands(Inst, 2);
3649 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3653 /// cvtLdWriteBackRegT2AddrModeImm8 - Convert parsed operands to MCInst.
3654 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3655 /// when they refer multiple MIOperands inside a single one.
3657 cvtLdWriteBackRegT2AddrModeImm8(MCInst &Inst, unsigned Opcode,
3658 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3659 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3661 // Create a writeback register dummy placeholder.
3662 Inst.addOperand(MCOperand::CreateImm(0));
3664 ((ARMOperand*)Operands[3])->addMemImm8OffsetOperands(Inst, 2);
3665 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3669 /// cvtStWriteBackRegT2AddrModeImm8 - Convert parsed operands to MCInst.
3670 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3671 /// when they refer multiple MIOperands inside a single one.
3673 cvtStWriteBackRegT2AddrModeImm8(MCInst &Inst, unsigned Opcode,
3674 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3675 // Create a writeback register dummy placeholder.
3676 Inst.addOperand(MCOperand::CreateImm(0));
3677 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3678 ((ARMOperand*)Operands[3])->addMemImm8OffsetOperands(Inst, 2);
3679 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3683 /// cvtLdWriteBackRegAddrMode2 - Convert parsed operands to MCInst.
3684 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3685 /// when they refer multiple MIOperands inside a single one.
3687 cvtLdWriteBackRegAddrMode2(MCInst &Inst, unsigned Opcode,
3688 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3689 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3691 // Create a writeback register dummy placeholder.
3692 Inst.addOperand(MCOperand::CreateImm(0));
3694 ((ARMOperand*)Operands[3])->addAddrMode2Operands(Inst, 3);
3695 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3699 /// cvtLdWriteBackRegAddrModeImm12 - Convert parsed operands to MCInst.
3700 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3701 /// when they refer multiple MIOperands inside a single one.
3703 cvtLdWriteBackRegAddrModeImm12(MCInst &Inst, unsigned Opcode,
3704 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3705 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3707 // Create a writeback register dummy placeholder.
3708 Inst.addOperand(MCOperand::CreateImm(0));
3710 ((ARMOperand*)Operands[3])->addMemImm12OffsetOperands(Inst, 2);
3711 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3716 /// cvtStWriteBackRegAddrModeImm12 - Convert parsed operands to MCInst.
3717 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3718 /// when they refer multiple MIOperands inside a single one.
3720 cvtStWriteBackRegAddrModeImm12(MCInst &Inst, unsigned Opcode,
3721 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3722 // Create a writeback register dummy placeholder.
3723 Inst.addOperand(MCOperand::CreateImm(0));
3724 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3725 ((ARMOperand*)Operands[3])->addMemImm12OffsetOperands(Inst, 2);
3726 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3730 /// cvtStWriteBackRegAddrMode2 - Convert parsed operands to MCInst.
3731 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3732 /// when they refer multiple MIOperands inside a single one.
3734 cvtStWriteBackRegAddrMode2(MCInst &Inst, unsigned Opcode,
3735 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3736 // Create a writeback register dummy placeholder.
3737 Inst.addOperand(MCOperand::CreateImm(0));
3738 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3739 ((ARMOperand*)Operands[3])->addAddrMode2Operands(Inst, 3);
3740 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3744 /// cvtStWriteBackRegAddrMode3 - Convert parsed operands to MCInst.
3745 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3746 /// when they refer multiple MIOperands inside a single one.
3748 cvtStWriteBackRegAddrMode3(MCInst &Inst, unsigned Opcode,
3749 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3750 // Create a writeback register dummy placeholder.
3751 Inst.addOperand(MCOperand::CreateImm(0));
3752 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3753 ((ARMOperand*)Operands[3])->addAddrMode3Operands(Inst, 3);
3754 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3758 /// cvtLdExtTWriteBackImm - Convert parsed operands to MCInst.
3759 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3760 /// when they refer multiple MIOperands inside a single one.
3762 cvtLdExtTWriteBackImm(MCInst &Inst, unsigned Opcode,
3763 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3765 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3766 // Create a writeback register dummy placeholder.
3767 Inst.addOperand(MCOperand::CreateImm(0));
3769 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
3771 ((ARMOperand*)Operands[4])->addPostIdxImm8Operands(Inst, 1);
3773 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3777 /// cvtLdExtTWriteBackReg - Convert parsed operands to MCInst.
3778 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3779 /// when they refer multiple MIOperands inside a single one.
3781 cvtLdExtTWriteBackReg(MCInst &Inst, unsigned Opcode,
3782 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3784 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3785 // Create a writeback register dummy placeholder.
3786 Inst.addOperand(MCOperand::CreateImm(0));
3788 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
3790 ((ARMOperand*)Operands[4])->addPostIdxRegOperands(Inst, 2);
3792 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3796 /// cvtStExtTWriteBackImm - Convert parsed operands to MCInst.
3797 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3798 /// when they refer multiple MIOperands inside a single one.
3800 cvtStExtTWriteBackImm(MCInst &Inst, unsigned Opcode,
3801 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3802 // Create a writeback register dummy placeholder.
3803 Inst.addOperand(MCOperand::CreateImm(0));
3805 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3807 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
3809 ((ARMOperand*)Operands[4])->addPostIdxImm8Operands(Inst, 1);
3811 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3815 /// cvtStExtTWriteBackReg - Convert parsed operands to MCInst.
3816 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3817 /// when they refer multiple MIOperands inside a single one.
3819 cvtStExtTWriteBackReg(MCInst &Inst, unsigned Opcode,
3820 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3821 // Create a writeback register dummy placeholder.
3822 Inst.addOperand(MCOperand::CreateImm(0));
3824 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3826 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
3828 ((ARMOperand*)Operands[4])->addPostIdxRegOperands(Inst, 2);
3830 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3834 /// cvtLdrdPre - Convert parsed operands to MCInst.
3835 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3836 /// when they refer multiple MIOperands inside a single one.
3838 cvtLdrdPre(MCInst &Inst, unsigned Opcode,
3839 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3841 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3842 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3843 // Create a writeback register dummy placeholder.
3844 Inst.addOperand(MCOperand::CreateImm(0));
3846 ((ARMOperand*)Operands[4])->addAddrMode3Operands(Inst, 3);
3848 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3852 /// cvtStrdPre - Convert parsed operands to MCInst.
3853 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3854 /// when they refer multiple MIOperands inside a single one.
3856 cvtStrdPre(MCInst &Inst, unsigned Opcode,
3857 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3858 // Create a writeback register dummy placeholder.
3859 Inst.addOperand(MCOperand::CreateImm(0));
3861 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3862 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3864 ((ARMOperand*)Operands[4])->addAddrMode3Operands(Inst, 3);
3866 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3870 /// cvtLdWriteBackRegAddrMode3 - Convert parsed operands to MCInst.
3871 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3872 /// when they refer multiple MIOperands inside a single one.
3874 cvtLdWriteBackRegAddrMode3(MCInst &Inst, unsigned Opcode,
3875 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3876 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3877 // Create a writeback register dummy placeholder.
3878 Inst.addOperand(MCOperand::CreateImm(0));
3879 ((ARMOperand*)Operands[3])->addAddrMode3Operands(Inst, 3);
3880 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3884 /// cvtThumbMultiple- Convert parsed operands to MCInst.
3885 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3886 /// when they refer multiple MIOperands inside a single one.
3888 cvtThumbMultiply(MCInst &Inst, unsigned Opcode,
3889 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3890 // The second source operand must be the same register as the destination
3892 if (Operands.size() == 6 &&
3893 (((ARMOperand*)Operands[3])->getReg() !=
3894 ((ARMOperand*)Operands[5])->getReg()) &&
3895 (((ARMOperand*)Operands[3])->getReg() !=
3896 ((ARMOperand*)Operands[4])->getReg())) {
3897 Error(Operands[3]->getStartLoc(),
3898 "destination register must match source register");
3901 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3902 ((ARMOperand*)Operands[1])->addCCOutOperands(Inst, 1);
3903 // If we have a three-operand form, make sure to set Rn to be the operand
3904 // that isn't the same as Rd.
3906 if (Operands.size() == 6 &&
3907 ((ARMOperand*)Operands[4])->getReg() ==
3908 ((ARMOperand*)Operands[3])->getReg())
3910 ((ARMOperand*)Operands[RegOp])->addRegOperands(Inst, 1);
3911 Inst.addOperand(Inst.getOperand(0));
3912 ((ARMOperand*)Operands[2])->addCondCodeOperands(Inst, 2);
3918 cvtVLDwbFixed(MCInst &Inst, unsigned Opcode,
3919 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3921 ((ARMOperand*)Operands[3])->addVecListOperands(Inst, 1);
3922 // Create a writeback register dummy placeholder.
3923 Inst.addOperand(MCOperand::CreateImm(0));
3925 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
3927 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3932 cvtVLDwbRegister(MCInst &Inst, unsigned Opcode,
3933 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3935 ((ARMOperand*)Operands[3])->addVecListOperands(Inst, 1);
3936 // Create a writeback register dummy placeholder.
3937 Inst.addOperand(MCOperand::CreateImm(0));
3939 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
3941 ((ARMOperand*)Operands[5])->addRegOperands(Inst, 1);
3943 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3948 cvtVSTwbFixed(MCInst &Inst, unsigned Opcode,
3949 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3950 // Create a writeback register dummy placeholder.
3951 Inst.addOperand(MCOperand::CreateImm(0));
3953 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
3955 ((ARMOperand*)Operands[3])->addVecListOperands(Inst, 1);
3957 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3962 cvtVSTwbRegister(MCInst &Inst, unsigned Opcode,
3963 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3964 // Create a writeback register dummy placeholder.
3965 Inst.addOperand(MCOperand::CreateImm(0));
3967 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
3969 ((ARMOperand*)Operands[5])->addRegOperands(Inst, 1);
3971 ((ARMOperand*)Operands[3])->addVecListOperands(Inst, 1);
3973 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3977 /// Parse an ARM memory expression, return false if successful else return true
3978 /// or an error. The first token must be a '[' when called.
3980 parseMemory(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3982 assert(Parser.getTok().is(AsmToken::LBrac) &&
3983 "Token is not a Left Bracket");
3984 S = Parser.getTok().getLoc();
3985 Parser.Lex(); // Eat left bracket token.
3987 const AsmToken &BaseRegTok = Parser.getTok();
3988 int BaseRegNum = tryParseRegister();
3989 if (BaseRegNum == -1)
3990 return Error(BaseRegTok.getLoc(), "register expected");
3992 // The next token must either be a comma or a closing bracket.
3993 const AsmToken &Tok = Parser.getTok();
3994 if (!Tok.is(AsmToken::Comma) && !Tok.is(AsmToken::RBrac))
3995 return Error(Tok.getLoc(), "malformed memory operand");
3997 if (Tok.is(AsmToken::RBrac)) {
3999 Parser.Lex(); // Eat right bracket token.
4001 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, 0, 0, ARM_AM::no_shift,
4002 0, 0, false, S, E));
4004 // If there's a pre-indexing writeback marker, '!', just add it as a token
4005 // operand. It's rather odd, but syntactically valid.
4006 if (Parser.getTok().is(AsmToken::Exclaim)) {
4007 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4008 Parser.Lex(); // Eat the '!'.
4014 assert(Tok.is(AsmToken::Comma) && "Lost comma in memory operand?!");
4015 Parser.Lex(); // Eat the comma.
4017 // If we have a ':', it's an alignment specifier.
4018 if (Parser.getTok().is(AsmToken::Colon)) {
4019 Parser.Lex(); // Eat the ':'.
4020 E = Parser.getTok().getLoc();
4023 if (getParser().ParseExpression(Expr))
4026 // The expression has to be a constant. Memory references with relocations
4027 // don't come through here, as they use the <label> forms of the relevant
4029 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
4031 return Error (E, "constant expression expected");
4034 switch (CE->getValue()) {
4037 "alignment specifier must be 16, 32, 64, 128, or 256 bits");
4038 case 16: Align = 2; break;
4039 case 32: Align = 4; break;
4040 case 64: Align = 8; break;
4041 case 128: Align = 16; break;
4042 case 256: Align = 32; break;
4045 // Now we should have the closing ']'
4046 E = Parser.getTok().getLoc();
4047 if (Parser.getTok().isNot(AsmToken::RBrac))
4048 return Error(E, "']' expected");
4049 Parser.Lex(); // Eat right bracket token.
4051 // Don't worry about range checking the value here. That's handled by
4052 // the is*() predicates.
4053 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, 0, 0,
4054 ARM_AM::no_shift, 0, Align,
4057 // If there's a pre-indexing writeback marker, '!', just add it as a token
4059 if (Parser.getTok().is(AsmToken::Exclaim)) {
4060 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4061 Parser.Lex(); // Eat the '!'.
4067 // If we have a '#', it's an immediate offset, else assume it's a register
4068 // offset. Be friendly and also accept a plain integer (without a leading
4069 // hash) for gas compatibility.
4070 if (Parser.getTok().is(AsmToken::Hash) ||
4071 Parser.getTok().is(AsmToken::Dollar) ||
4072 Parser.getTok().is(AsmToken::Integer)) {
4073 if (Parser.getTok().isNot(AsmToken::Integer))
4074 Parser.Lex(); // Eat the '#'.
4075 E = Parser.getTok().getLoc();
4077 bool isNegative = getParser().getTok().is(AsmToken::Minus);
4078 const MCExpr *Offset;
4079 if (getParser().ParseExpression(Offset))
4082 // The expression has to be a constant. Memory references with relocations
4083 // don't come through here, as they use the <label> forms of the relevant
4085 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Offset);
4087 return Error (E, "constant expression expected");
4089 // If the constant was #-0, represent it as INT32_MIN.
4090 int32_t Val = CE->getValue();
4091 if (isNegative && Val == 0)
4092 CE = MCConstantExpr::Create(INT32_MIN, getContext());
4094 // Now we should have the closing ']'
4095 E = Parser.getTok().getLoc();
4096 if (Parser.getTok().isNot(AsmToken::RBrac))
4097 return Error(E, "']' expected");
4098 Parser.Lex(); // Eat right bracket token.
4100 // Don't worry about range checking the value here. That's handled by
4101 // the is*() predicates.
4102 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, CE, 0,
4103 ARM_AM::no_shift, 0, 0,
4106 // If there's a pre-indexing writeback marker, '!', just add it as a token
4108 if (Parser.getTok().is(AsmToken::Exclaim)) {
4109 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4110 Parser.Lex(); // Eat the '!'.
4116 // The register offset is optionally preceded by a '+' or '-'
4117 bool isNegative = false;
4118 if (Parser.getTok().is(AsmToken::Minus)) {
4120 Parser.Lex(); // Eat the '-'.
4121 } else if (Parser.getTok().is(AsmToken::Plus)) {
4123 Parser.Lex(); // Eat the '+'.
4126 E = Parser.getTok().getLoc();
4127 int OffsetRegNum = tryParseRegister();
4128 if (OffsetRegNum == -1)
4129 return Error(E, "register expected");
4131 // If there's a shift operator, handle it.
4132 ARM_AM::ShiftOpc ShiftType = ARM_AM::no_shift;
4133 unsigned ShiftImm = 0;
4134 if (Parser.getTok().is(AsmToken::Comma)) {
4135 Parser.Lex(); // Eat the ','.
4136 if (parseMemRegOffsetShift(ShiftType, ShiftImm))
4140 // Now we should have the closing ']'
4141 E = Parser.getTok().getLoc();
4142 if (Parser.getTok().isNot(AsmToken::RBrac))
4143 return Error(E, "']' expected");
4144 Parser.Lex(); // Eat right bracket token.
4146 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, 0, OffsetRegNum,
4147 ShiftType, ShiftImm, 0, isNegative,
4150 // If there's a pre-indexing writeback marker, '!', just add it as a token
4152 if (Parser.getTok().is(AsmToken::Exclaim)) {
4153 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4154 Parser.Lex(); // Eat the '!'.
4160 /// parseMemRegOffsetShift - one of these two:
4161 /// ( lsl | lsr | asr | ror ) , # shift_amount
4163 /// return true if it parses a shift otherwise it returns false.
4164 bool ARMAsmParser::parseMemRegOffsetShift(ARM_AM::ShiftOpc &St,
4166 SMLoc Loc = Parser.getTok().getLoc();
4167 const AsmToken &Tok = Parser.getTok();
4168 if (Tok.isNot(AsmToken::Identifier))
4170 StringRef ShiftName = Tok.getString();
4171 if (ShiftName == "lsl" || ShiftName == "LSL" ||
4172 ShiftName == "asl" || ShiftName == "ASL")
4174 else if (ShiftName == "lsr" || ShiftName == "LSR")
4176 else if (ShiftName == "asr" || ShiftName == "ASR")
4178 else if (ShiftName == "ror" || ShiftName == "ROR")
4180 else if (ShiftName == "rrx" || ShiftName == "RRX")
4183 return Error(Loc, "illegal shift operator");
4184 Parser.Lex(); // Eat shift type token.
4186 // rrx stands alone.
4188 if (St != ARM_AM::rrx) {
4189 Loc = Parser.getTok().getLoc();
4190 // A '#' and a shift amount.
4191 const AsmToken &HashTok = Parser.getTok();
4192 if (HashTok.isNot(AsmToken::Hash) &&
4193 HashTok.isNot(AsmToken::Dollar))
4194 return Error(HashTok.getLoc(), "'#' expected");
4195 Parser.Lex(); // Eat hash token.
4198 if (getParser().ParseExpression(Expr))
4200 // Range check the immediate.
4201 // lsl, ror: 0 <= imm <= 31
4202 // lsr, asr: 0 <= imm <= 32
4203 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
4205 return Error(Loc, "shift amount must be an immediate");
4206 int64_t Imm = CE->getValue();
4208 ((St == ARM_AM::lsl || St == ARM_AM::ror) && Imm > 31) ||
4209 ((St == ARM_AM::lsr || St == ARM_AM::asr) && Imm > 32))
4210 return Error(Loc, "immediate shift value out of range");
4217 /// parseFPImm - A floating point immediate expression operand.
4218 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
4219 parseFPImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4220 SMLoc S = Parser.getTok().getLoc();
4222 if (Parser.getTok().isNot(AsmToken::Hash) &&
4223 Parser.getTok().isNot(AsmToken::Dollar))
4224 return MatchOperand_NoMatch;
4226 // Disambiguate the VMOV forms that can accept an FP immediate.
4227 // vmov.f32 <sreg>, #imm
4228 // vmov.f64 <dreg>, #imm
4229 // vmov.f32 <dreg>, #imm @ vector f32x2
4230 // vmov.f32 <qreg>, #imm @ vector f32x4
4232 // There are also the NEON VMOV instructions which expect an
4233 // integer constant. Make sure we don't try to parse an FPImm
4235 // vmov.i{8|16|32|64} <dreg|qreg>, #imm
4236 ARMOperand *TyOp = static_cast<ARMOperand*>(Operands[2]);
4237 if (!TyOp->isToken() || (TyOp->getToken() != ".f32" &&
4238 TyOp->getToken() != ".f64"))
4239 return MatchOperand_NoMatch;
4241 Parser.Lex(); // Eat the '#'.
4243 // Handle negation, as that still comes through as a separate token.
4244 bool isNegative = false;
4245 if (Parser.getTok().is(AsmToken::Minus)) {
4249 const AsmToken &Tok = Parser.getTok();
4250 if (Tok.is(AsmToken::Real)) {
4251 APFloat RealVal(APFloat::IEEEdouble, Tok.getString());
4252 uint64_t IntVal = RealVal.bitcastToAPInt().getZExtValue();
4253 // If we had a '-' in front, toggle the sign bit.
4254 IntVal ^= (uint64_t)isNegative << 63;
4255 int Val = ARM_AM::getFP64Imm(APInt(64, IntVal));
4256 Parser.Lex(); // Eat the token.
4258 TokError("floating point value out of range");
4259 return MatchOperand_ParseFail;
4261 Operands.push_back(ARMOperand::CreateFPImm(Val, S, getContext()));
4262 return MatchOperand_Success;
4264 if (Tok.is(AsmToken::Integer)) {
4265 int64_t Val = Tok.getIntVal();
4266 Parser.Lex(); // Eat the token.
4267 if (Val > 255 || Val < 0) {
4268 TokError("encoded floating point value out of range");
4269 return MatchOperand_ParseFail;
4271 Operands.push_back(ARMOperand::CreateFPImm(Val, S, getContext()));
4272 return MatchOperand_Success;
4275 TokError("invalid floating point immediate");
4276 return MatchOperand_ParseFail;
4278 /// Parse a arm instruction operand. For now this parses the operand regardless
4279 /// of the mnemonic.
4280 bool ARMAsmParser::parseOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands,
4281 StringRef Mnemonic) {
4284 // Check if the current operand has a custom associated parser, if so, try to
4285 // custom parse the operand, or fallback to the general approach.
4286 OperandMatchResultTy ResTy = MatchOperandParserImpl(Operands, Mnemonic);
4287 if (ResTy == MatchOperand_Success)
4289 // If there wasn't a custom match, try the generic matcher below. Otherwise,
4290 // there was a match, but an error occurred, in which case, just return that
4291 // the operand parsing failed.
4292 if (ResTy == MatchOperand_ParseFail)
4295 switch (getLexer().getKind()) {
4297 Error(Parser.getTok().getLoc(), "unexpected token in operand");
4299 case AsmToken::Identifier: {
4300 if (!tryParseRegisterWithWriteBack(Operands))
4302 int Res = tryParseShiftRegister(Operands);
4303 if (Res == 0) // success
4305 else if (Res == -1) // irrecoverable error
4307 // If this is VMRS, check for the apsr_nzcv operand.
4308 if (Mnemonic == "vmrs" && Parser.getTok().getString() == "apsr_nzcv") {
4309 S = Parser.getTok().getLoc();
4311 Operands.push_back(ARMOperand::CreateToken("apsr_nzcv", S));
4315 // Fall though for the Identifier case that is not a register or a
4318 case AsmToken::LParen: // parenthesized expressions like (_strcmp-4)
4319 case AsmToken::Integer: // things like 1f and 2b as a branch targets
4320 case AsmToken::String: // quoted label names.
4321 case AsmToken::Dot: { // . as a branch target
4322 // This was not a register so parse other operands that start with an
4323 // identifier (like labels) as expressions and create them as immediates.
4324 const MCExpr *IdVal;
4325 S = Parser.getTok().getLoc();
4326 if (getParser().ParseExpression(IdVal))
4328 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4329 Operands.push_back(ARMOperand::CreateImm(IdVal, S, E));
4332 case AsmToken::LBrac:
4333 return parseMemory(Operands);
4334 case AsmToken::LCurly:
4335 return parseRegisterList(Operands);
4336 case AsmToken::Dollar:
4337 case AsmToken::Hash: {
4338 // #42 -> immediate.
4339 // TODO: ":lower16:" and ":upper16:" modifiers after # before immediate
4340 S = Parser.getTok().getLoc();
4342 bool isNegative = Parser.getTok().is(AsmToken::Minus);
4343 const MCExpr *ImmVal;
4344 if (getParser().ParseExpression(ImmVal))
4346 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ImmVal);
4348 int32_t Val = CE->getValue();
4349 if (isNegative && Val == 0)
4350 ImmVal = MCConstantExpr::Create(INT32_MIN, getContext());
4352 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4353 Operands.push_back(ARMOperand::CreateImm(ImmVal, S, E));
4356 case AsmToken::Colon: {
4357 // ":lower16:" and ":upper16:" expression prefixes
4358 // FIXME: Check it's an expression prefix,
4359 // e.g. (FOO - :lower16:BAR) isn't legal.
4360 ARMMCExpr::VariantKind RefKind;
4361 if (parsePrefix(RefKind))
4364 const MCExpr *SubExprVal;
4365 if (getParser().ParseExpression(SubExprVal))
4368 const MCExpr *ExprVal = ARMMCExpr::Create(RefKind, SubExprVal,
4370 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4371 Operands.push_back(ARMOperand::CreateImm(ExprVal, S, E));
4377 // parsePrefix - Parse ARM 16-bit relocations expression prefix, i.e.
4378 // :lower16: and :upper16:.
4379 bool ARMAsmParser::parsePrefix(ARMMCExpr::VariantKind &RefKind) {
4380 RefKind = ARMMCExpr::VK_ARM_None;
4382 // :lower16: and :upper16: modifiers
4383 assert(getLexer().is(AsmToken::Colon) && "expected a :");
4384 Parser.Lex(); // Eat ':'
4386 if (getLexer().isNot(AsmToken::Identifier)) {
4387 Error(Parser.getTok().getLoc(), "expected prefix identifier in operand");
4391 StringRef IDVal = Parser.getTok().getIdentifier();
4392 if (IDVal == "lower16") {
4393 RefKind = ARMMCExpr::VK_ARM_LO16;
4394 } else if (IDVal == "upper16") {
4395 RefKind = ARMMCExpr::VK_ARM_HI16;
4397 Error(Parser.getTok().getLoc(), "unexpected prefix in operand");
4402 if (getLexer().isNot(AsmToken::Colon)) {
4403 Error(Parser.getTok().getLoc(), "unexpected token after prefix");
4406 Parser.Lex(); // Eat the last ':'
4410 /// \brief Given a mnemonic, split out possible predication code and carry
4411 /// setting letters to form a canonical mnemonic and flags.
4413 // FIXME: Would be nice to autogen this.
4414 // FIXME: This is a bit of a maze of special cases.
4415 StringRef ARMAsmParser::splitMnemonic(StringRef Mnemonic,
4416 unsigned &PredicationCode,
4418 unsigned &ProcessorIMod,
4419 StringRef &ITMask) {
4420 PredicationCode = ARMCC::AL;
4421 CarrySetting = false;
4424 // Ignore some mnemonics we know aren't predicated forms.
4426 // FIXME: Would be nice to autogen this.
4427 if ((Mnemonic == "movs" && isThumb()) ||
4428 Mnemonic == "teq" || Mnemonic == "vceq" || Mnemonic == "svc" ||
4429 Mnemonic == "mls" || Mnemonic == "smmls" || Mnemonic == "vcls" ||
4430 Mnemonic == "vmls" || Mnemonic == "vnmls" || Mnemonic == "vacge" ||
4431 Mnemonic == "vcge" || Mnemonic == "vclt" || Mnemonic == "vacgt" ||
4432 Mnemonic == "vcgt" || Mnemonic == "vcle" || Mnemonic == "smlal" ||
4433 Mnemonic == "umaal" || Mnemonic == "umlal" || Mnemonic == "vabal" ||
4434 Mnemonic == "vmlal" || Mnemonic == "vpadal" || Mnemonic == "vqdmlal" ||
4435 Mnemonic == "fmuls")
4438 // First, split out any predication code. Ignore mnemonics we know aren't
4439 // predicated but do have a carry-set and so weren't caught above.
4440 if (Mnemonic != "adcs" && Mnemonic != "bics" && Mnemonic != "movs" &&
4441 Mnemonic != "muls" && Mnemonic != "smlals" && Mnemonic != "smulls" &&
4442 Mnemonic != "umlals" && Mnemonic != "umulls" && Mnemonic != "lsls" &&
4443 Mnemonic != "sbcs" && Mnemonic != "rscs") {
4444 unsigned CC = StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2))
4445 .Case("eq", ARMCC::EQ)
4446 .Case("ne", ARMCC::NE)
4447 .Case("hs", ARMCC::HS)
4448 .Case("cs", ARMCC::HS)
4449 .Case("lo", ARMCC::LO)
4450 .Case("cc", ARMCC::LO)
4451 .Case("mi", ARMCC::MI)
4452 .Case("pl", ARMCC::PL)
4453 .Case("vs", ARMCC::VS)
4454 .Case("vc", ARMCC::VC)
4455 .Case("hi", ARMCC::HI)
4456 .Case("ls", ARMCC::LS)
4457 .Case("ge", ARMCC::GE)
4458 .Case("lt", ARMCC::LT)
4459 .Case("gt", ARMCC::GT)
4460 .Case("le", ARMCC::LE)
4461 .Case("al", ARMCC::AL)
4464 Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 2);
4465 PredicationCode = CC;
4469 // Next, determine if we have a carry setting bit. We explicitly ignore all
4470 // the instructions we know end in 's'.
4471 if (Mnemonic.endswith("s") &&
4472 !(Mnemonic == "cps" || Mnemonic == "mls" ||
4473 Mnemonic == "mrs" || Mnemonic == "smmls" || Mnemonic == "vabs" ||
4474 Mnemonic == "vcls" || Mnemonic == "vmls" || Mnemonic == "vmrs" ||
4475 Mnemonic == "vnmls" || Mnemonic == "vqabs" || Mnemonic == "vrecps" ||
4476 Mnemonic == "vrsqrts" || Mnemonic == "srs" || Mnemonic == "flds" ||
4477 Mnemonic == "fmrs" || Mnemonic == "fsqrts" || Mnemonic == "fsubs" ||
4478 Mnemonic == "fsts" || Mnemonic == "fcpys" || Mnemonic == "fdivs" ||
4479 Mnemonic == "fmuls" ||
4480 (Mnemonic == "movs" && isThumb()))) {
4481 Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 1);
4482 CarrySetting = true;
4485 // The "cps" instruction can have a interrupt mode operand which is glued into
4486 // the mnemonic. Check if this is the case, split it and parse the imod op
4487 if (Mnemonic.startswith("cps")) {
4488 // Split out any imod code.
4490 StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2, 2))
4491 .Case("ie", ARM_PROC::IE)
4492 .Case("id", ARM_PROC::ID)
4495 Mnemonic = Mnemonic.slice(0, Mnemonic.size()-2);
4496 ProcessorIMod = IMod;
4500 // The "it" instruction has the condition mask on the end of the mnemonic.
4501 if (Mnemonic.startswith("it")) {
4502 ITMask = Mnemonic.slice(2, Mnemonic.size());
4503 Mnemonic = Mnemonic.slice(0, 2);
4509 /// \brief Given a canonical mnemonic, determine if the instruction ever allows
4510 /// inclusion of carry set or predication code operands.
4512 // FIXME: It would be nice to autogen this.
4514 getMnemonicAcceptInfo(StringRef Mnemonic, bool &CanAcceptCarrySet,
4515 bool &CanAcceptPredicationCode) {
4516 if (Mnemonic == "and" || Mnemonic == "lsl" || Mnemonic == "lsr" ||
4517 Mnemonic == "rrx" || Mnemonic == "ror" || Mnemonic == "sub" ||
4518 Mnemonic == "add" || Mnemonic == "adc" ||
4519 Mnemonic == "mul" || Mnemonic == "bic" || Mnemonic == "asr" ||
4520 Mnemonic == "orr" || Mnemonic == "mvn" ||
4521 Mnemonic == "rsb" || Mnemonic == "rsc" || Mnemonic == "orn" ||
4522 Mnemonic == "sbc" || Mnemonic == "eor" || Mnemonic == "neg" ||
4523 (!isThumb() && (Mnemonic == "smull" || Mnemonic == "mov" ||
4524 Mnemonic == "mla" || Mnemonic == "smlal" ||
4525 Mnemonic == "umlal" || Mnemonic == "umull"))) {
4526 CanAcceptCarrySet = true;
4528 CanAcceptCarrySet = false;
4530 if (Mnemonic == "cbnz" || Mnemonic == "setend" || Mnemonic == "dmb" ||
4531 Mnemonic == "cps" || Mnemonic == "mcr2" || Mnemonic == "it" ||
4532 Mnemonic == "mcrr2" || Mnemonic == "cbz" || Mnemonic == "cdp2" ||
4533 Mnemonic == "trap" || Mnemonic == "mrc2" || Mnemonic == "mrrc2" ||
4534 Mnemonic == "dsb" || Mnemonic == "isb" || Mnemonic == "setend" ||
4535 (Mnemonic == "clrex" && !isThumb()) ||
4536 (Mnemonic == "nop" && isThumbOne()) ||
4537 ((Mnemonic == "pld" || Mnemonic == "pli" || Mnemonic == "pldw" ||
4538 Mnemonic == "ldc2" || Mnemonic == "ldc2l" ||
4539 Mnemonic == "stc2" || Mnemonic == "stc2l") && !isThumb()) ||
4540 ((Mnemonic.startswith("rfe") || Mnemonic.startswith("srs")) &&
4542 Mnemonic.startswith("cps") || (Mnemonic == "movs" && isThumbOne())) {
4543 CanAcceptPredicationCode = false;
4545 CanAcceptPredicationCode = true;
4548 if (Mnemonic == "bkpt" || Mnemonic == "mcr" || Mnemonic == "mcrr" ||
4549 Mnemonic == "mrc" || Mnemonic == "mrrc" || Mnemonic == "cdp")
4550 CanAcceptPredicationCode = false;
4554 bool ARMAsmParser::shouldOmitCCOutOperand(StringRef Mnemonic,
4555 SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4556 // FIXME: This is all horribly hacky. We really need a better way to deal
4557 // with optional operands like this in the matcher table.
4559 // The 'mov' mnemonic is special. One variant has a cc_out operand, while
4560 // another does not. Specifically, the MOVW instruction does not. So we
4561 // special case it here and remove the defaulted (non-setting) cc_out
4562 // operand if that's the instruction we're trying to match.
4564 // We do this as post-processing of the explicit operands rather than just
4565 // conditionally adding the cc_out in the first place because we need
4566 // to check the type of the parsed immediate operand.
4567 if (Mnemonic == "mov" && Operands.size() > 4 && !isThumb() &&
4568 !static_cast<ARMOperand*>(Operands[4])->isARMSOImm() &&
4569 static_cast<ARMOperand*>(Operands[4])->isImm0_65535Expr() &&
4570 static_cast<ARMOperand*>(Operands[1])->getReg() == 0)
4573 // Register-register 'add' for thumb does not have a cc_out operand
4574 // when there are only two register operands.
4575 if (isThumb() && Mnemonic == "add" && Operands.size() == 5 &&
4576 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4577 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4578 static_cast<ARMOperand*>(Operands[1])->getReg() == 0)
4580 // Register-register 'add' for thumb does not have a cc_out operand
4581 // when it's an ADD Rdm, SP, {Rdm|#imm0_255} instruction. We do
4582 // have to check the immediate range here since Thumb2 has a variant
4583 // that can handle a different range and has a cc_out operand.
4584 if (((isThumb() && Mnemonic == "add") ||
4585 (isThumbTwo() && Mnemonic == "sub")) &&
4586 Operands.size() == 6 &&
4587 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4588 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4589 static_cast<ARMOperand*>(Operands[4])->getReg() == ARM::SP &&
4590 static_cast<ARMOperand*>(Operands[1])->getReg() == 0 &&
4591 (static_cast<ARMOperand*>(Operands[5])->isReg() ||
4592 static_cast<ARMOperand*>(Operands[5])->isImm0_1020s4()))
4594 // For Thumb2, add/sub immediate does not have a cc_out operand for the
4595 // imm0_4095 variant. That's the least-preferred variant when
4596 // selecting via the generic "add" mnemonic, so to know that we
4597 // should remove the cc_out operand, we have to explicitly check that
4598 // it's not one of the other variants. Ugh.
4599 if (isThumbTwo() && (Mnemonic == "add" || Mnemonic == "sub") &&
4600 Operands.size() == 6 &&
4601 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4602 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4603 static_cast<ARMOperand*>(Operands[5])->isImm()) {
4604 // Nest conditions rather than one big 'if' statement for readability.
4606 // If either register is a high reg, it's either one of the SP
4607 // variants (handled above) or a 32-bit encoding, so we just
4608 // check against T3.
4609 if ((!isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) ||
4610 !isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg())) &&
4611 static_cast<ARMOperand*>(Operands[5])->isT2SOImm())
4613 // If both registers are low, we're in an IT block, and the immediate is
4614 // in range, we should use encoding T1 instead, which has a cc_out.
4616 isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) &&
4617 isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()) &&
4618 static_cast<ARMOperand*>(Operands[5])->isImm0_7())
4621 // Otherwise, we use encoding T4, which does not have a cc_out
4626 // The thumb2 multiply instruction doesn't have a CCOut register, so
4627 // if we have a "mul" mnemonic in Thumb mode, check if we'll be able to
4628 // use the 16-bit encoding or not.
4629 if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 6 &&
4630 static_cast<ARMOperand*>(Operands[1])->getReg() == 0 &&
4631 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4632 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4633 static_cast<ARMOperand*>(Operands[5])->isReg() &&
4634 // If the registers aren't low regs, the destination reg isn't the
4635 // same as one of the source regs, or the cc_out operand is zero
4636 // outside of an IT block, we have to use the 32-bit encoding, so
4637 // remove the cc_out operand.
4638 (!isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) ||
4639 !isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()) ||
4640 !isARMLowRegister(static_cast<ARMOperand*>(Operands[5])->getReg()) ||
4642 (static_cast<ARMOperand*>(Operands[3])->getReg() !=
4643 static_cast<ARMOperand*>(Operands[5])->getReg() &&
4644 static_cast<ARMOperand*>(Operands[3])->getReg() !=
4645 static_cast<ARMOperand*>(Operands[4])->getReg())))
4648 // Also check the 'mul' syntax variant that doesn't specify an explicit
4649 // destination register.
4650 if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 5 &&
4651 static_cast<ARMOperand*>(Operands[1])->getReg() == 0 &&
4652 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4653 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4654 // If the registers aren't low regs or the cc_out operand is zero
4655 // outside of an IT block, we have to use the 32-bit encoding, so
4656 // remove the cc_out operand.
4657 (!isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) ||
4658 !isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()) ||
4664 // Register-register 'add/sub' for thumb does not have a cc_out operand
4665 // when it's an ADD/SUB SP, #imm. Be lenient on count since there's also
4666 // the "add/sub SP, SP, #imm" version. If the follow-up operands aren't
4667 // right, this will result in better diagnostics (which operand is off)
4669 if (isThumb() && (Mnemonic == "add" || Mnemonic == "sub") &&
4670 (Operands.size() == 5 || Operands.size() == 6) &&
4671 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4672 static_cast<ARMOperand*>(Operands[3])->getReg() == ARM::SP &&
4673 static_cast<ARMOperand*>(Operands[1])->getReg() == 0)
4679 static bool isDataTypeToken(StringRef Tok) {
4680 return Tok == ".8" || Tok == ".16" || Tok == ".32" || Tok == ".64" ||
4681 Tok == ".i8" || Tok == ".i16" || Tok == ".i32" || Tok == ".i64" ||
4682 Tok == ".u8" || Tok == ".u16" || Tok == ".u32" || Tok == ".u64" ||
4683 Tok == ".s8" || Tok == ".s16" || Tok == ".s32" || Tok == ".s64" ||
4684 Tok == ".p8" || Tok == ".p16" || Tok == ".f32" || Tok == ".f64" ||
4685 Tok == ".f" || Tok == ".d";
4688 // FIXME: This bit should probably be handled via an explicit match class
4689 // in the .td files that matches the suffix instead of having it be
4690 // a literal string token the way it is now.
4691 static bool doesIgnoreDataTypeSuffix(StringRef Mnemonic, StringRef DT) {
4692 return Mnemonic.startswith("vldm") || Mnemonic.startswith("vstm");
4695 static void applyMnemonicAliases(StringRef &Mnemonic, unsigned Features);
4696 /// Parse an arm instruction mnemonic followed by its operands.
4697 bool ARMAsmParser::ParseInstruction(StringRef Name, SMLoc NameLoc,
4698 SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4699 // Apply mnemonic aliases before doing anything else, as the destination
4700 // mnemnonic may include suffices and we want to handle them normally.
4701 // The generic tblgen'erated code does this later, at the start of
4702 // MatchInstructionImpl(), but that's too late for aliases that include
4703 // any sort of suffix.
4704 unsigned AvailableFeatures = getAvailableFeatures();
4705 applyMnemonicAliases(Name, AvailableFeatures);
4707 // First check for the ARM-specific .req directive.
4708 if (Parser.getTok().is(AsmToken::Identifier) &&
4709 Parser.getTok().getIdentifier() == ".req") {
4710 parseDirectiveReq(Name, NameLoc);
4711 // We always return 'error' for this, as we're done with this
4712 // statement and don't need to match the 'instruction."
4716 // Create the leading tokens for the mnemonic, split by '.' characters.
4717 size_t Start = 0, Next = Name.find('.');
4718 StringRef Mnemonic = Name.slice(Start, Next);
4720 // Split out the predication code and carry setting flag from the mnemonic.
4721 unsigned PredicationCode;
4722 unsigned ProcessorIMod;
4725 Mnemonic = splitMnemonic(Mnemonic, PredicationCode, CarrySetting,
4726 ProcessorIMod, ITMask);
4728 // In Thumb1, only the branch (B) instruction can be predicated.
4729 if (isThumbOne() && PredicationCode != ARMCC::AL && Mnemonic != "b") {
4730 Parser.EatToEndOfStatement();
4731 return Error(NameLoc, "conditional execution not supported in Thumb1");
4734 Operands.push_back(ARMOperand::CreateToken(Mnemonic, NameLoc));
4736 // Handle the IT instruction ITMask. Convert it to a bitmask. This
4737 // is the mask as it will be for the IT encoding if the conditional
4738 // encoding has a '1' as it's bit0 (i.e. 't' ==> '1'). In the case
4739 // where the conditional bit0 is zero, the instruction post-processing
4740 // will adjust the mask accordingly.
4741 if (Mnemonic == "it") {
4742 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + 2);
4743 if (ITMask.size() > 3) {
4744 Parser.EatToEndOfStatement();
4745 return Error(Loc, "too many conditions on IT instruction");
4748 for (unsigned i = ITMask.size(); i != 0; --i) {
4749 char pos = ITMask[i - 1];
4750 if (pos != 't' && pos != 'e') {
4751 Parser.EatToEndOfStatement();
4752 return Error(Loc, "illegal IT block condition mask '" + ITMask + "'");
4755 if (ITMask[i - 1] == 't')
4758 Operands.push_back(ARMOperand::CreateITMask(Mask, Loc));
4761 // FIXME: This is all a pretty gross hack. We should automatically handle
4762 // optional operands like this via tblgen.
4764 // Next, add the CCOut and ConditionCode operands, if needed.
4766 // For mnemonics which can ever incorporate a carry setting bit or predication
4767 // code, our matching model involves us always generating CCOut and
4768 // ConditionCode operands to match the mnemonic "as written" and then we let
4769 // the matcher deal with finding the right instruction or generating an
4770 // appropriate error.
4771 bool CanAcceptCarrySet, CanAcceptPredicationCode;
4772 getMnemonicAcceptInfo(Mnemonic, CanAcceptCarrySet, CanAcceptPredicationCode);
4774 // If we had a carry-set on an instruction that can't do that, issue an
4776 if (!CanAcceptCarrySet && CarrySetting) {
4777 Parser.EatToEndOfStatement();
4778 return Error(NameLoc, "instruction '" + Mnemonic +
4779 "' can not set flags, but 's' suffix specified");
4781 // If we had a predication code on an instruction that can't do that, issue an
4783 if (!CanAcceptPredicationCode && PredicationCode != ARMCC::AL) {
4784 Parser.EatToEndOfStatement();
4785 return Error(NameLoc, "instruction '" + Mnemonic +
4786 "' is not predicable, but condition code specified");
4789 // Add the carry setting operand, if necessary.
4790 if (CanAcceptCarrySet) {
4791 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size());
4792 Operands.push_back(ARMOperand::CreateCCOut(CarrySetting ? ARM::CPSR : 0,
4796 // Add the predication code operand, if necessary.
4797 if (CanAcceptPredicationCode) {
4798 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size() +
4800 Operands.push_back(ARMOperand::CreateCondCode(
4801 ARMCC::CondCodes(PredicationCode), Loc));
4804 // Add the processor imod operand, if necessary.
4805 if (ProcessorIMod) {
4806 Operands.push_back(ARMOperand::CreateImm(
4807 MCConstantExpr::Create(ProcessorIMod, getContext()),
4811 // Add the remaining tokens in the mnemonic.
4812 while (Next != StringRef::npos) {
4814 Next = Name.find('.', Start + 1);
4815 StringRef ExtraToken = Name.slice(Start, Next);
4817 // Some NEON instructions have an optional datatype suffix that is
4818 // completely ignored. Check for that.
4819 if (isDataTypeToken(ExtraToken) &&
4820 doesIgnoreDataTypeSuffix(Mnemonic, ExtraToken))
4823 if (ExtraToken != ".n") {
4824 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Start);
4825 Operands.push_back(ARMOperand::CreateToken(ExtraToken, Loc));
4829 // Read the remaining operands.
4830 if (getLexer().isNot(AsmToken::EndOfStatement)) {
4831 // Read the first operand.
4832 if (parseOperand(Operands, Mnemonic)) {
4833 Parser.EatToEndOfStatement();
4837 while (getLexer().is(AsmToken::Comma)) {
4838 Parser.Lex(); // Eat the comma.
4840 // Parse and remember the operand.
4841 if (parseOperand(Operands, Mnemonic)) {
4842 Parser.EatToEndOfStatement();
4848 if (getLexer().isNot(AsmToken::EndOfStatement)) {
4849 SMLoc Loc = getLexer().getLoc();
4850 Parser.EatToEndOfStatement();
4851 return Error(Loc, "unexpected token in argument list");
4854 Parser.Lex(); // Consume the EndOfStatement
4856 // Some instructions, mostly Thumb, have forms for the same mnemonic that
4857 // do and don't have a cc_out optional-def operand. With some spot-checks
4858 // of the operand list, we can figure out which variant we're trying to
4859 // parse and adjust accordingly before actually matching. We shouldn't ever
4860 // try to remove a cc_out operand that was explicitly set on the the
4861 // mnemonic, of course (CarrySetting == true). Reason number #317 the
4862 // table driven matcher doesn't fit well with the ARM instruction set.
4863 if (!CarrySetting && shouldOmitCCOutOperand(Mnemonic, Operands)) {
4864 ARMOperand *Op = static_cast<ARMOperand*>(Operands[1]);
4865 Operands.erase(Operands.begin() + 1);
4869 // ARM mode 'blx' need special handling, as the register operand version
4870 // is predicable, but the label operand version is not. So, we can't rely
4871 // on the Mnemonic based checking to correctly figure out when to put
4872 // a k_CondCode operand in the list. If we're trying to match the label
4873 // version, remove the k_CondCode operand here.
4874 if (!isThumb() && Mnemonic == "blx" && Operands.size() == 3 &&
4875 static_cast<ARMOperand*>(Operands[2])->isImm()) {
4876 ARMOperand *Op = static_cast<ARMOperand*>(Operands[1]);
4877 Operands.erase(Operands.begin() + 1);
4881 // The vector-compare-to-zero instructions have a literal token "#0" at
4882 // the end that comes to here as an immediate operand. Convert it to a
4883 // token to play nicely with the matcher.
4884 if ((Mnemonic == "vceq" || Mnemonic == "vcge" || Mnemonic == "vcgt" ||
4885 Mnemonic == "vcle" || Mnemonic == "vclt") && Operands.size() == 6 &&
4886 static_cast<ARMOperand*>(Operands[5])->isImm()) {
4887 ARMOperand *Op = static_cast<ARMOperand*>(Operands[5]);
4888 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op->getImm());
4889 if (CE && CE->getValue() == 0) {
4890 Operands.erase(Operands.begin() + 5);
4891 Operands.push_back(ARMOperand::CreateToken("#0", Op->getStartLoc()));
4895 // VCMP{E} does the same thing, but with a different operand count.
4896 if ((Mnemonic == "vcmp" || Mnemonic == "vcmpe") && Operands.size() == 5 &&
4897 static_cast<ARMOperand*>(Operands[4])->isImm()) {
4898 ARMOperand *Op = static_cast<ARMOperand*>(Operands[4]);
4899 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op->getImm());
4900 if (CE && CE->getValue() == 0) {
4901 Operands.erase(Operands.begin() + 4);
4902 Operands.push_back(ARMOperand::CreateToken("#0", Op->getStartLoc()));
4906 // Similarly, the Thumb1 "RSB" instruction has a literal "#0" on the
4907 // end. Convert it to a token here. Take care not to convert those
4908 // that should hit the Thumb2 encoding.
4909 if (Mnemonic == "rsb" && isThumb() && Operands.size() == 6 &&
4910 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4911 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4912 static_cast<ARMOperand*>(Operands[5])->isImm()) {
4913 ARMOperand *Op = static_cast<ARMOperand*>(Operands[5]);
4914 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op->getImm());
4915 if (CE && CE->getValue() == 0 &&
4917 // The cc_out operand matches the IT block.
4918 ((inITBlock() != CarrySetting) &&
4919 // Neither register operand is a high register.
4920 (isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) &&
4921 isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()))))){
4922 Operands.erase(Operands.begin() + 5);
4923 Operands.push_back(ARMOperand::CreateToken("#0", Op->getStartLoc()));
4931 // Validate context-sensitive operand constraints.
4933 // return 'true' if register list contains non-low GPR registers,
4934 // 'false' otherwise. If Reg is in the register list or is HiReg, set
4935 // 'containsReg' to true.
4936 static bool checkLowRegisterList(MCInst Inst, unsigned OpNo, unsigned Reg,
4937 unsigned HiReg, bool &containsReg) {
4938 containsReg = false;
4939 for (unsigned i = OpNo; i < Inst.getNumOperands(); ++i) {
4940 unsigned OpReg = Inst.getOperand(i).getReg();
4943 // Anything other than a low register isn't legal here.
4944 if (!isARMLowRegister(OpReg) && (!HiReg || OpReg != HiReg))
4950 // Check if the specified regisgter is in the register list of the inst,
4951 // starting at the indicated operand number.
4952 static bool listContainsReg(MCInst &Inst, unsigned OpNo, unsigned Reg) {
4953 for (unsigned i = OpNo; i < Inst.getNumOperands(); ++i) {
4954 unsigned OpReg = Inst.getOperand(i).getReg();
4961 // FIXME: We would really prefer to have MCInstrInfo (the wrapper around
4962 // the ARMInsts array) instead. Getting that here requires awkward
4963 // API changes, though. Better way?
4965 extern const MCInstrDesc ARMInsts[];
4967 static const MCInstrDesc &getInstDesc(unsigned Opcode) {
4968 return ARMInsts[Opcode];
4971 // FIXME: We would really like to be able to tablegen'erate this.
4973 validateInstruction(MCInst &Inst,
4974 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4975 const MCInstrDesc &MCID = getInstDesc(Inst.getOpcode());
4976 SMLoc Loc = Operands[0]->getStartLoc();
4977 // Check the IT block state first.
4978 // NOTE: In Thumb mode, the BKPT instruction has the interesting property of
4979 // being allowed in IT blocks, but not being predicable. It just always
4981 if (inITBlock() && Inst.getOpcode() != ARM::tBKPT) {
4983 if (ITState.FirstCond)
4984 ITState.FirstCond = false;
4986 bit = (ITState.Mask >> (5 - ITState.CurPosition)) & 1;
4987 // The instruction must be predicable.
4988 if (!MCID.isPredicable())
4989 return Error(Loc, "instructions in IT block must be predicable");
4990 unsigned Cond = Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm();
4991 unsigned ITCond = bit ? ITState.Cond :
4992 ARMCC::getOppositeCondition(ITState.Cond);
4993 if (Cond != ITCond) {
4994 // Find the condition code Operand to get its SMLoc information.
4996 for (unsigned i = 1; i < Operands.size(); ++i)
4997 if (static_cast<ARMOperand*>(Operands[i])->isCondCode())
4998 CondLoc = Operands[i]->getStartLoc();
4999 return Error(CondLoc, "incorrect condition in IT block; got '" +
5000 StringRef(ARMCondCodeToString(ARMCC::CondCodes(Cond))) +
5001 "', but expected '" +
5002 ARMCondCodeToString(ARMCC::CondCodes(ITCond)) + "'");
5004 // Check for non-'al' condition codes outside of the IT block.
5005 } else if (isThumbTwo() && MCID.isPredicable() &&
5006 Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm() !=
5007 ARMCC::AL && Inst.getOpcode() != ARM::tB &&
5008 Inst.getOpcode() != ARM::t2B)
5009 return Error(Loc, "predicated instructions must be in IT block");
5011 switch (Inst.getOpcode()) {
5014 case ARM::LDRD_POST:
5016 // Rt2 must be Rt + 1.
5017 unsigned Rt = getARMRegisterNumbering(Inst.getOperand(0).getReg());
5018 unsigned Rt2 = getARMRegisterNumbering(Inst.getOperand(1).getReg());
5020 return Error(Operands[3]->getStartLoc(),
5021 "destination operands must be sequential");
5025 // Rt2 must be Rt + 1.
5026 unsigned Rt = getARMRegisterNumbering(Inst.getOperand(0).getReg());
5027 unsigned Rt2 = getARMRegisterNumbering(Inst.getOperand(1).getReg());
5029 return Error(Operands[3]->getStartLoc(),
5030 "source operands must be sequential");
5034 case ARM::STRD_POST:
5036 // Rt2 must be Rt + 1.
5037 unsigned Rt = getARMRegisterNumbering(Inst.getOperand(1).getReg());
5038 unsigned Rt2 = getARMRegisterNumbering(Inst.getOperand(2).getReg());
5040 return Error(Operands[3]->getStartLoc(),
5041 "source operands must be sequential");
5046 // width must be in range [1, 32-lsb]
5047 unsigned lsb = Inst.getOperand(2).getImm();
5048 unsigned widthm1 = Inst.getOperand(3).getImm();
5049 if (widthm1 >= 32 - lsb)
5050 return Error(Operands[5]->getStartLoc(),
5051 "bitfield width must be in range [1,32-lsb]");
5055 // If we're parsing Thumb2, the .w variant is available and handles
5056 // most cases that are normally illegal for a Thumb1 LDM
5057 // instruction. We'll make the transformation in processInstruction()
5060 // Thumb LDM instructions are writeback iff the base register is not
5061 // in the register list.
5062 unsigned Rn = Inst.getOperand(0).getReg();
5063 bool hasWritebackToken =
5064 (static_cast<ARMOperand*>(Operands[3])->isToken() &&
5065 static_cast<ARMOperand*>(Operands[3])->getToken() == "!");
5066 bool listContainsBase;
5067 if (checkLowRegisterList(Inst, 3, Rn, 0, listContainsBase) && !isThumbTwo())
5068 return Error(Operands[3 + hasWritebackToken]->getStartLoc(),
5069 "registers must be in range r0-r7");
5070 // If we should have writeback, then there should be a '!' token.
5071 if (!listContainsBase && !hasWritebackToken && !isThumbTwo())
5072 return Error(Operands[2]->getStartLoc(),
5073 "writeback operator '!' expected");
5074 // If we should not have writeback, there must not be a '!'. This is
5075 // true even for the 32-bit wide encodings.
5076 if (listContainsBase && hasWritebackToken)
5077 return Error(Operands[3]->getStartLoc(),
5078 "writeback operator '!' not allowed when base register "
5079 "in register list");
5083 case ARM::t2LDMIA_UPD: {
5084 if (listContainsReg(Inst, 3, Inst.getOperand(0).getReg()))
5085 return Error(Operands[4]->getStartLoc(),
5086 "writeback operator '!' not allowed when base register "
5087 "in register list");
5090 // Like for ldm/stm, push and pop have hi-reg handling version in Thumb2,
5091 // so only issue a diagnostic for thumb1. The instructions will be
5092 // switched to the t2 encodings in processInstruction() if necessary.
5094 bool listContainsBase;
5095 if (checkLowRegisterList(Inst, 2, 0, ARM::PC, listContainsBase) &&
5097 return Error(Operands[2]->getStartLoc(),
5098 "registers must be in range r0-r7 or pc");
5102 bool listContainsBase;
5103 if (checkLowRegisterList(Inst, 2, 0, ARM::LR, listContainsBase) &&
5105 return Error(Operands[2]->getStartLoc(),
5106 "registers must be in range r0-r7 or lr");
5109 case ARM::tSTMIA_UPD: {
5110 bool listContainsBase;
5111 if (checkLowRegisterList(Inst, 4, 0, 0, listContainsBase) && !isThumbTwo())
5112 return Error(Operands[4]->getStartLoc(),
5113 "registers must be in range r0-r7");
5121 static unsigned getRealVSTLNOpcode(unsigned Opc, unsigned &Spacing) {
5123 default: assert(0 && "unexpected opcode!");
5125 case ARM::VST1LNdWB_fixed_Asm_8: case ARM::VST1LNdWB_fixed_Asm_P8:
5126 case ARM::VST1LNdWB_fixed_Asm_I8: case ARM::VST1LNdWB_fixed_Asm_S8:
5127 case ARM::VST1LNdWB_fixed_Asm_U8:
5129 return ARM::VST1LNd8_UPD;
5130 case ARM::VST1LNdWB_fixed_Asm_16: case ARM::VST1LNdWB_fixed_Asm_P16:
5131 case ARM::VST1LNdWB_fixed_Asm_I16: case ARM::VST1LNdWB_fixed_Asm_S16:
5132 case ARM::VST1LNdWB_fixed_Asm_U16:
5134 return ARM::VST1LNd16_UPD;
5135 case ARM::VST1LNdWB_fixed_Asm_32: case ARM::VST1LNdWB_fixed_Asm_F:
5136 case ARM::VST1LNdWB_fixed_Asm_F32: case ARM::VST1LNdWB_fixed_Asm_I32:
5137 case ARM::VST1LNdWB_fixed_Asm_S32: case ARM::VST1LNdWB_fixed_Asm_U32:
5139 return ARM::VST1LNd32_UPD;
5140 case ARM::VST1LNdWB_register_Asm_8: case ARM::VST1LNdWB_register_Asm_P8:
5141 case ARM::VST1LNdWB_register_Asm_I8: case ARM::VST1LNdWB_register_Asm_S8:
5142 case ARM::VST1LNdWB_register_Asm_U8:
5144 return ARM::VST1LNd8_UPD;
5145 case ARM::VST1LNdWB_register_Asm_16: case ARM::VST1LNdWB_register_Asm_P16:
5146 case ARM::VST1LNdWB_register_Asm_I16: case ARM::VST1LNdWB_register_Asm_S16:
5147 case ARM::VST1LNdWB_register_Asm_U16:
5149 return ARM::VST1LNd16_UPD;
5150 case ARM::VST1LNdWB_register_Asm_32: case ARM::VST1LNdWB_register_Asm_F:
5151 case ARM::VST1LNdWB_register_Asm_F32: case ARM::VST1LNdWB_register_Asm_I32:
5152 case ARM::VST1LNdWB_register_Asm_S32: case ARM::VST1LNdWB_register_Asm_U32:
5154 return ARM::VST1LNd32_UPD;
5155 case ARM::VST1LNdAsm_8: case ARM::VST1LNdAsm_P8:
5156 case ARM::VST1LNdAsm_I8: case ARM::VST1LNdAsm_S8:
5157 case ARM::VST1LNdAsm_U8:
5159 return ARM::VST1LNd8;
5160 case ARM::VST1LNdAsm_16: case ARM::VST1LNdAsm_P16:
5161 case ARM::VST1LNdAsm_I16: case ARM::VST1LNdAsm_S16:
5162 case ARM::VST1LNdAsm_U16:
5164 return ARM::VST1LNd16;
5165 case ARM::VST1LNdAsm_32: case ARM::VST1LNdAsm_F:
5166 case ARM::VST1LNdAsm_F32: case ARM::VST1LNdAsm_I32:
5167 case ARM::VST1LNdAsm_S32: case ARM::VST1LNdAsm_U32:
5169 return ARM::VST1LNd32;
5172 case ARM::VST2LNdWB_fixed_Asm_8: case ARM::VST2LNdWB_fixed_Asm_P8:
5173 case ARM::VST2LNdWB_fixed_Asm_I8: case ARM::VST2LNdWB_fixed_Asm_S8:
5174 case ARM::VST2LNdWB_fixed_Asm_U8:
5176 return ARM::VST2LNd8_UPD;
5177 case ARM::VST2LNdWB_fixed_Asm_16: case ARM::VST2LNdWB_fixed_Asm_P16:
5178 case ARM::VST2LNdWB_fixed_Asm_I16: case ARM::VST2LNdWB_fixed_Asm_S16:
5179 case ARM::VST2LNdWB_fixed_Asm_U16:
5181 return ARM::VST2LNd16_UPD;
5182 case ARM::VST2LNdWB_fixed_Asm_32: case ARM::VST2LNdWB_fixed_Asm_F:
5183 case ARM::VST2LNdWB_fixed_Asm_F32: case ARM::VST2LNdWB_fixed_Asm_I32:
5184 case ARM::VST2LNdWB_fixed_Asm_S32: case ARM::VST2LNdWB_fixed_Asm_U32:
5186 return ARM::VST2LNd32_UPD;
5187 case ARM::VST2LNqWB_fixed_Asm_16: case ARM::VST2LNqWB_fixed_Asm_P16:
5188 case ARM::VST2LNqWB_fixed_Asm_I16: case ARM::VST2LNqWB_fixed_Asm_S16:
5189 case ARM::VST2LNqWB_fixed_Asm_U16:
5191 return ARM::VST2LNq16_UPD;
5192 case ARM::VST2LNqWB_fixed_Asm_32: case ARM::VST2LNqWB_fixed_Asm_F:
5193 case ARM::VST2LNqWB_fixed_Asm_F32: case ARM::VST2LNqWB_fixed_Asm_I32:
5194 case ARM::VST2LNqWB_fixed_Asm_S32: case ARM::VST2LNqWB_fixed_Asm_U32:
5196 return ARM::VST2LNq32_UPD;
5198 case ARM::VST2LNdWB_register_Asm_8: case ARM::VST2LNdWB_register_Asm_P8:
5199 case ARM::VST2LNdWB_register_Asm_I8: case ARM::VST2LNdWB_register_Asm_S8:
5200 case ARM::VST2LNdWB_register_Asm_U8:
5202 return ARM::VST2LNd8_UPD;
5203 case ARM::VST2LNdWB_register_Asm_16: case ARM::VST2LNdWB_register_Asm_P16:
5204 case ARM::VST2LNdWB_register_Asm_I16: case ARM::VST2LNdWB_register_Asm_S16:
5205 case ARM::VST2LNdWB_register_Asm_U16:
5207 return ARM::VST2LNd16_UPD;
5208 case ARM::VST2LNdWB_register_Asm_32: case ARM::VST2LNdWB_register_Asm_F:
5209 case ARM::VST2LNdWB_register_Asm_F32: case ARM::VST2LNdWB_register_Asm_I32:
5210 case ARM::VST2LNdWB_register_Asm_S32: case ARM::VST2LNdWB_register_Asm_U32:
5212 return ARM::VST2LNd32_UPD;
5213 case ARM::VST2LNqWB_register_Asm_16: case ARM::VST2LNqWB_register_Asm_P16:
5214 case ARM::VST2LNqWB_register_Asm_I16: case ARM::VST2LNqWB_register_Asm_S16:
5215 case ARM::VST2LNqWB_register_Asm_U16:
5217 return ARM::VST2LNq16_UPD;
5218 case ARM::VST2LNqWB_register_Asm_32: case ARM::VST2LNqWB_register_Asm_F:
5219 case ARM::VST2LNqWB_register_Asm_F32: case ARM::VST2LNqWB_register_Asm_I32:
5220 case ARM::VST2LNqWB_register_Asm_S32: case ARM::VST2LNqWB_register_Asm_U32:
5222 return ARM::VST2LNq32_UPD;
5224 case ARM::VST2LNdAsm_8: case ARM::VST2LNdAsm_P8:
5225 case ARM::VST2LNdAsm_I8: case ARM::VST2LNdAsm_S8:
5226 case ARM::VST2LNdAsm_U8:
5228 return ARM::VST2LNd8;
5229 case ARM::VST2LNdAsm_16: case ARM::VST2LNdAsm_P16:
5230 case ARM::VST2LNdAsm_I16: case ARM::VST2LNdAsm_S16:
5231 case ARM::VST2LNdAsm_U16:
5233 return ARM::VST2LNd16;
5234 case ARM::VST2LNdAsm_32: case ARM::VST2LNdAsm_F:
5235 case ARM::VST2LNdAsm_F32: case ARM::VST2LNdAsm_I32:
5236 case ARM::VST2LNdAsm_S32: case ARM::VST2LNdAsm_U32:
5238 return ARM::VST2LNd32;
5239 case ARM::VST2LNqAsm_16: case ARM::VST2LNqAsm_P16:
5240 case ARM::VST2LNqAsm_I16: case ARM::VST2LNqAsm_S16:
5241 case ARM::VST2LNqAsm_U16:
5243 return ARM::VST2LNq16;
5244 case ARM::VST2LNqAsm_32: case ARM::VST2LNqAsm_F:
5245 case ARM::VST2LNqAsm_F32: case ARM::VST2LNqAsm_I32:
5246 case ARM::VST2LNqAsm_S32: case ARM::VST2LNqAsm_U32:
5248 return ARM::VST2LNq32;
5252 static unsigned getRealVLDLNOpcode(unsigned Opc, unsigned &Spacing) {
5254 default: assert(0 && "unexpected opcode!");
5256 case ARM::VLD1LNdWB_fixed_Asm_8: case ARM::VLD1LNdWB_fixed_Asm_P8:
5257 case ARM::VLD1LNdWB_fixed_Asm_I8: case ARM::VLD1LNdWB_fixed_Asm_S8:
5258 case ARM::VLD1LNdWB_fixed_Asm_U8:
5260 return ARM::VLD1LNd8_UPD;
5261 case ARM::VLD1LNdWB_fixed_Asm_16: case ARM::VLD1LNdWB_fixed_Asm_P16:
5262 case ARM::VLD1LNdWB_fixed_Asm_I16: case ARM::VLD1LNdWB_fixed_Asm_S16:
5263 case ARM::VLD1LNdWB_fixed_Asm_U16:
5265 return ARM::VLD1LNd16_UPD;
5266 case ARM::VLD1LNdWB_fixed_Asm_32: case ARM::VLD1LNdWB_fixed_Asm_F:
5267 case ARM::VLD1LNdWB_fixed_Asm_F32: case ARM::VLD1LNdWB_fixed_Asm_I32:
5268 case ARM::VLD1LNdWB_fixed_Asm_S32: case ARM::VLD1LNdWB_fixed_Asm_U32:
5270 return ARM::VLD1LNd32_UPD;
5271 case ARM::VLD1LNdWB_register_Asm_8: case ARM::VLD1LNdWB_register_Asm_P8:
5272 case ARM::VLD1LNdWB_register_Asm_I8: case ARM::VLD1LNdWB_register_Asm_S8:
5273 case ARM::VLD1LNdWB_register_Asm_U8:
5275 return ARM::VLD1LNd8_UPD;
5276 case ARM::VLD1LNdWB_register_Asm_16: case ARM::VLD1LNdWB_register_Asm_P16:
5277 case ARM::VLD1LNdWB_register_Asm_I16: case ARM::VLD1LNdWB_register_Asm_S16:
5278 case ARM::VLD1LNdWB_register_Asm_U16:
5280 return ARM::VLD1LNd16_UPD;
5281 case ARM::VLD1LNdWB_register_Asm_32: case ARM::VLD1LNdWB_register_Asm_F:
5282 case ARM::VLD1LNdWB_register_Asm_F32: case ARM::VLD1LNdWB_register_Asm_I32:
5283 case ARM::VLD1LNdWB_register_Asm_S32: case ARM::VLD1LNdWB_register_Asm_U32:
5285 return ARM::VLD1LNd32_UPD;
5286 case ARM::VLD1LNdAsm_8: case ARM::VLD1LNdAsm_P8:
5287 case ARM::VLD1LNdAsm_I8: case ARM::VLD1LNdAsm_S8:
5288 case ARM::VLD1LNdAsm_U8:
5290 return ARM::VLD1LNd8;
5291 case ARM::VLD1LNdAsm_16: case ARM::VLD1LNdAsm_P16:
5292 case ARM::VLD1LNdAsm_I16: case ARM::VLD1LNdAsm_S16:
5293 case ARM::VLD1LNdAsm_U16:
5295 return ARM::VLD1LNd16;
5296 case ARM::VLD1LNdAsm_32: case ARM::VLD1LNdAsm_F:
5297 case ARM::VLD1LNdAsm_F32: case ARM::VLD1LNdAsm_I32:
5298 case ARM::VLD1LNdAsm_S32: case ARM::VLD1LNdAsm_U32:
5300 return ARM::VLD1LNd32;
5303 case ARM::VLD2LNdWB_fixed_Asm_8: case ARM::VLD2LNdWB_fixed_Asm_P8:
5304 case ARM::VLD2LNdWB_fixed_Asm_I8: case ARM::VLD2LNdWB_fixed_Asm_S8:
5305 case ARM::VLD2LNdWB_fixed_Asm_U8:
5307 return ARM::VLD2LNd8_UPD;
5308 case ARM::VLD2LNdWB_fixed_Asm_16: case ARM::VLD2LNdWB_fixed_Asm_P16:
5309 case ARM::VLD2LNdWB_fixed_Asm_I16: case ARM::VLD2LNdWB_fixed_Asm_S16:
5310 case ARM::VLD2LNdWB_fixed_Asm_U16:
5312 return ARM::VLD2LNd16_UPD;
5313 case ARM::VLD2LNdWB_fixed_Asm_32: case ARM::VLD2LNdWB_fixed_Asm_F:
5314 case ARM::VLD2LNdWB_fixed_Asm_F32: case ARM::VLD2LNdWB_fixed_Asm_I32:
5315 case ARM::VLD2LNdWB_fixed_Asm_S32: case ARM::VLD2LNdWB_fixed_Asm_U32:
5317 return ARM::VLD2LNd32_UPD;
5318 case ARM::VLD2LNqWB_fixed_Asm_16: case ARM::VLD2LNqWB_fixed_Asm_P16:
5319 case ARM::VLD2LNqWB_fixed_Asm_I16: case ARM::VLD2LNqWB_fixed_Asm_S16:
5320 case ARM::VLD2LNqWB_fixed_Asm_U16:
5322 return ARM::VLD2LNq16_UPD;
5323 case ARM::VLD2LNqWB_fixed_Asm_32: case ARM::VLD2LNqWB_fixed_Asm_F:
5324 case ARM::VLD2LNqWB_fixed_Asm_F32: case ARM::VLD2LNqWB_fixed_Asm_I32:
5325 case ARM::VLD2LNqWB_fixed_Asm_S32: case ARM::VLD2LNqWB_fixed_Asm_U32:
5327 return ARM::VLD2LNq32_UPD;
5328 case ARM::VLD2LNdWB_register_Asm_8: case ARM::VLD2LNdWB_register_Asm_P8:
5329 case ARM::VLD2LNdWB_register_Asm_I8: case ARM::VLD2LNdWB_register_Asm_S8:
5330 case ARM::VLD2LNdWB_register_Asm_U8:
5332 return ARM::VLD2LNd8_UPD;
5333 case ARM::VLD2LNdWB_register_Asm_16: case ARM::VLD2LNdWB_register_Asm_P16:
5334 case ARM::VLD2LNdWB_register_Asm_I16: case ARM::VLD2LNdWB_register_Asm_S16:
5335 case ARM::VLD2LNdWB_register_Asm_U16:
5337 return ARM::VLD2LNd16_UPD;
5338 case ARM::VLD2LNdWB_register_Asm_32: case ARM::VLD2LNdWB_register_Asm_F:
5339 case ARM::VLD2LNdWB_register_Asm_F32: case ARM::VLD2LNdWB_register_Asm_I32:
5340 case ARM::VLD2LNdWB_register_Asm_S32: case ARM::VLD2LNdWB_register_Asm_U32:
5342 return ARM::VLD2LNd32_UPD;
5343 case ARM::VLD2LNqWB_register_Asm_16: case ARM::VLD2LNqWB_register_Asm_P16:
5344 case ARM::VLD2LNqWB_register_Asm_I16: case ARM::VLD2LNqWB_register_Asm_S16:
5345 case ARM::VLD2LNqWB_register_Asm_U16:
5347 return ARM::VLD2LNq16_UPD;
5348 case ARM::VLD2LNqWB_register_Asm_32: case ARM::VLD2LNqWB_register_Asm_F:
5349 case ARM::VLD2LNqWB_register_Asm_F32: case ARM::VLD2LNqWB_register_Asm_I32:
5350 case ARM::VLD2LNqWB_register_Asm_S32: case ARM::VLD2LNqWB_register_Asm_U32:
5352 return ARM::VLD2LNq32_UPD;
5353 case ARM::VLD2LNdAsm_8: case ARM::VLD2LNdAsm_P8:
5354 case ARM::VLD2LNdAsm_I8: case ARM::VLD2LNdAsm_S8:
5355 case ARM::VLD2LNdAsm_U8:
5357 return ARM::VLD2LNd8;
5358 case ARM::VLD2LNdAsm_16: case ARM::VLD2LNdAsm_P16:
5359 case ARM::VLD2LNdAsm_I16: case ARM::VLD2LNdAsm_S16:
5360 case ARM::VLD2LNdAsm_U16:
5362 return ARM::VLD2LNd16;
5363 case ARM::VLD2LNdAsm_32: case ARM::VLD2LNdAsm_F:
5364 case ARM::VLD2LNdAsm_F32: case ARM::VLD2LNdAsm_I32:
5365 case ARM::VLD2LNdAsm_S32: case ARM::VLD2LNdAsm_U32:
5367 return ARM::VLD2LNd32;
5368 case ARM::VLD2LNqAsm_16: case ARM::VLD2LNqAsm_P16:
5369 case ARM::VLD2LNqAsm_I16: case ARM::VLD2LNqAsm_S16:
5370 case ARM::VLD2LNqAsm_U16:
5372 return ARM::VLD2LNq16;
5373 case ARM::VLD2LNqAsm_32: case ARM::VLD2LNqAsm_F:
5374 case ARM::VLD2LNqAsm_F32: case ARM::VLD2LNqAsm_I32:
5375 case ARM::VLD2LNqAsm_S32: case ARM::VLD2LNqAsm_U32:
5377 return ARM::VLD2LNq32;
5382 processInstruction(MCInst &Inst,
5383 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
5384 switch (Inst.getOpcode()) {
5385 // Handle NEON VST complex aliases.
5386 case ARM::VST1LNdWB_register_Asm_8: case ARM::VST1LNdWB_register_Asm_P8:
5387 case ARM::VST1LNdWB_register_Asm_I8: case ARM::VST1LNdWB_register_Asm_S8:
5388 case ARM::VST1LNdWB_register_Asm_U8: case ARM::VST1LNdWB_register_Asm_16:
5389 case ARM::VST1LNdWB_register_Asm_P16: case ARM::VST1LNdWB_register_Asm_I16:
5390 case ARM::VST1LNdWB_register_Asm_S16: case ARM::VST1LNdWB_register_Asm_U16:
5391 case ARM::VST1LNdWB_register_Asm_32: case ARM::VST1LNdWB_register_Asm_F:
5392 case ARM::VST1LNdWB_register_Asm_F32: case ARM::VST1LNdWB_register_Asm_I32:
5393 case ARM::VST1LNdWB_register_Asm_S32: case ARM::VST1LNdWB_register_Asm_U32: {
5395 // Shuffle the operands around so the lane index operand is in the
5398 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5399 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5400 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5401 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5402 TmpInst.addOperand(Inst.getOperand(4)); // Rm
5403 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5404 TmpInst.addOperand(Inst.getOperand(1)); // lane
5405 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
5406 TmpInst.addOperand(Inst.getOperand(6));
5411 case ARM::VST2LNdWB_register_Asm_8: case ARM::VST2LNdWB_register_Asm_P8:
5412 case ARM::VST2LNdWB_register_Asm_I8: case ARM::VST2LNdWB_register_Asm_S8:
5413 case ARM::VST2LNdWB_register_Asm_U8: case ARM::VST2LNdWB_register_Asm_16:
5414 case ARM::VST2LNdWB_register_Asm_P16: case ARM::VST2LNdWB_register_Asm_I16:
5415 case ARM::VST2LNdWB_register_Asm_S16: case ARM::VST2LNdWB_register_Asm_U16:
5416 case ARM::VST2LNdWB_register_Asm_32: case ARM::VST2LNdWB_register_Asm_F:
5417 case ARM::VST2LNdWB_register_Asm_F32: case ARM::VST2LNdWB_register_Asm_I32:
5418 case ARM::VST2LNdWB_register_Asm_S32: case ARM::VST2LNdWB_register_Asm_U32:
5419 case ARM::VST2LNqWB_register_Asm_16: case ARM::VST2LNqWB_register_Asm_P16:
5420 case ARM::VST2LNqWB_register_Asm_I16: case ARM::VST2LNqWB_register_Asm_S16:
5421 case ARM::VST2LNqWB_register_Asm_U16: case ARM::VST2LNqWB_register_Asm_32:
5422 case ARM::VST2LNqWB_register_Asm_F: case ARM::VST2LNqWB_register_Asm_F32:
5423 case ARM::VST2LNqWB_register_Asm_I32: case ARM::VST2LNqWB_register_Asm_S32:
5424 case ARM::VST2LNqWB_register_Asm_U32: {
5426 // Shuffle the operands around so the lane index operand is in the
5429 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5430 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5431 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5432 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5433 TmpInst.addOperand(Inst.getOperand(4)); // Rm
5434 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5435 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5437 TmpInst.addOperand(Inst.getOperand(1)); // lane
5438 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
5439 TmpInst.addOperand(Inst.getOperand(6));
5443 case ARM::VST1LNdWB_fixed_Asm_8: case ARM::VST1LNdWB_fixed_Asm_P8:
5444 case ARM::VST1LNdWB_fixed_Asm_I8: case ARM::VST1LNdWB_fixed_Asm_S8:
5445 case ARM::VST1LNdWB_fixed_Asm_U8: case ARM::VST1LNdWB_fixed_Asm_16:
5446 case ARM::VST1LNdWB_fixed_Asm_P16: case ARM::VST1LNdWB_fixed_Asm_I16:
5447 case ARM::VST1LNdWB_fixed_Asm_S16: case ARM::VST1LNdWB_fixed_Asm_U16:
5448 case ARM::VST1LNdWB_fixed_Asm_32: case ARM::VST1LNdWB_fixed_Asm_F:
5449 case ARM::VST1LNdWB_fixed_Asm_F32: case ARM::VST1LNdWB_fixed_Asm_I32:
5450 case ARM::VST1LNdWB_fixed_Asm_S32: case ARM::VST1LNdWB_fixed_Asm_U32: {
5452 // Shuffle the operands around so the lane index operand is in the
5455 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5456 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5457 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5458 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5459 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
5460 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5461 TmpInst.addOperand(Inst.getOperand(1)); // lane
5462 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5463 TmpInst.addOperand(Inst.getOperand(5));
5468 case ARM::VST2LNdWB_fixed_Asm_8: case ARM::VST2LNdWB_fixed_Asm_P8:
5469 case ARM::VST2LNdWB_fixed_Asm_I8: case ARM::VST2LNdWB_fixed_Asm_S8:
5470 case ARM::VST2LNdWB_fixed_Asm_U8: case ARM::VST2LNdWB_fixed_Asm_16:
5471 case ARM::VST2LNdWB_fixed_Asm_P16: case ARM::VST2LNdWB_fixed_Asm_I16:
5472 case ARM::VST2LNdWB_fixed_Asm_S16: case ARM::VST2LNdWB_fixed_Asm_U16:
5473 case ARM::VST2LNdWB_fixed_Asm_32: case ARM::VST2LNdWB_fixed_Asm_F:
5474 case ARM::VST2LNdWB_fixed_Asm_F32: case ARM::VST2LNdWB_fixed_Asm_I32:
5475 case ARM::VST2LNdWB_fixed_Asm_S32: case ARM::VST2LNdWB_fixed_Asm_U32:
5476 case ARM::VST2LNqWB_fixed_Asm_16: case ARM::VST2LNqWB_fixed_Asm_P16:
5477 case ARM::VST2LNqWB_fixed_Asm_I16: case ARM::VST2LNqWB_fixed_Asm_S16:
5478 case ARM::VST2LNqWB_fixed_Asm_U16: case ARM::VST2LNqWB_fixed_Asm_32:
5479 case ARM::VST2LNqWB_fixed_Asm_F: case ARM::VST2LNqWB_fixed_Asm_F32:
5480 case ARM::VST2LNqWB_fixed_Asm_I32: case ARM::VST2LNqWB_fixed_Asm_S32:
5481 case ARM::VST2LNqWB_fixed_Asm_U32: {
5483 // Shuffle the operands around so the lane index operand is in the
5486 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5487 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5488 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5489 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5490 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
5491 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5492 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5494 TmpInst.addOperand(Inst.getOperand(1)); // lane
5495 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5496 TmpInst.addOperand(Inst.getOperand(5));
5500 case ARM::VST1LNdAsm_8: case ARM::VST1LNdAsm_P8: case ARM::VST1LNdAsm_I8:
5501 case ARM::VST1LNdAsm_S8: case ARM::VST1LNdAsm_U8: case ARM::VST1LNdAsm_16:
5502 case ARM::VST1LNdAsm_P16: case ARM::VST1LNdAsm_I16: case ARM::VST1LNdAsm_S16:
5503 case ARM::VST1LNdAsm_U16: case ARM::VST1LNdAsm_32: case ARM::VST1LNdAsm_F:
5504 case ARM::VST1LNdAsm_F32: case ARM::VST1LNdAsm_I32: case ARM::VST1LNdAsm_S32:
5505 case ARM::VST1LNdAsm_U32: {
5507 // Shuffle the operands around so the lane index operand is in the
5510 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5511 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5512 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5513 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5514 TmpInst.addOperand(Inst.getOperand(1)); // lane
5515 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5516 TmpInst.addOperand(Inst.getOperand(5));
5521 case ARM::VST2LNdAsm_8: case ARM::VST2LNdAsm_P8: case ARM::VST2LNdAsm_I8:
5522 case ARM::VST2LNdAsm_S8: case ARM::VST2LNdAsm_U8: case ARM::VST2LNdAsm_16:
5523 case ARM::VST2LNdAsm_P16: case ARM::VST2LNdAsm_I16: case ARM::VST2LNdAsm_S16:
5524 case ARM::VST2LNdAsm_U16: case ARM::VST2LNdAsm_32: case ARM::VST2LNdAsm_F:
5525 case ARM::VST2LNdAsm_F32: case ARM::VST2LNdAsm_I32: case ARM::VST2LNdAsm_S32:
5526 case ARM::VST2LNdAsm_U32: case ARM::VST2LNqAsm_16: case ARM::VST2LNqAsm_P16:
5527 case ARM::VST2LNqAsm_I16: case ARM::VST2LNqAsm_S16: case ARM::VST2LNqAsm_U16:
5528 case ARM::VST2LNqAsm_32: case ARM::VST2LNqAsm_F: case ARM::VST2LNqAsm_F32:
5529 case ARM::VST2LNqAsm_I32: case ARM::VST2LNqAsm_S32: case ARM::VST2LNqAsm_U32:{
5531 // Shuffle the operands around so the lane index operand is in the
5534 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5535 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5536 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5537 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5538 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5540 TmpInst.addOperand(Inst.getOperand(1)); // lane
5541 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5542 TmpInst.addOperand(Inst.getOperand(5));
5546 // Handle NEON VLD complex aliases.
5547 case ARM::VLD1LNdWB_register_Asm_8: case ARM::VLD1LNdWB_register_Asm_P8:
5548 case ARM::VLD1LNdWB_register_Asm_I8: case ARM::VLD1LNdWB_register_Asm_S8:
5549 case ARM::VLD1LNdWB_register_Asm_U8: case ARM::VLD1LNdWB_register_Asm_16:
5550 case ARM::VLD1LNdWB_register_Asm_P16: case ARM::VLD1LNdWB_register_Asm_I16:
5551 case ARM::VLD1LNdWB_register_Asm_S16: case ARM::VLD1LNdWB_register_Asm_U16:
5552 case ARM::VLD1LNdWB_register_Asm_32: case ARM::VLD1LNdWB_register_Asm_F:
5553 case ARM::VLD1LNdWB_register_Asm_F32: case ARM::VLD1LNdWB_register_Asm_I32:
5554 case ARM::VLD1LNdWB_register_Asm_S32: case ARM::VLD1LNdWB_register_Asm_U32: {
5556 // Shuffle the operands around so the lane index operand is in the
5559 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5560 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5561 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5562 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5563 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5564 TmpInst.addOperand(Inst.getOperand(4)); // Rm
5565 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5566 TmpInst.addOperand(Inst.getOperand(1)); // lane
5567 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
5568 TmpInst.addOperand(Inst.getOperand(6));
5573 case ARM::VLD2LNdWB_register_Asm_8: case ARM::VLD2LNdWB_register_Asm_P8:
5574 case ARM::VLD2LNdWB_register_Asm_I8: case ARM::VLD2LNdWB_register_Asm_S8:
5575 case ARM::VLD2LNdWB_register_Asm_U8: case ARM::VLD2LNdWB_register_Asm_16:
5576 case ARM::VLD2LNdWB_register_Asm_P16: case ARM::VLD2LNdWB_register_Asm_I16:
5577 case ARM::VLD2LNdWB_register_Asm_S16: case ARM::VLD2LNdWB_register_Asm_U16:
5578 case ARM::VLD2LNdWB_register_Asm_32: case ARM::VLD2LNdWB_register_Asm_F:
5579 case ARM::VLD2LNdWB_register_Asm_F32: case ARM::VLD2LNdWB_register_Asm_I32:
5580 case ARM::VLD2LNdWB_register_Asm_S32: case ARM::VLD2LNdWB_register_Asm_U32:
5581 case ARM::VLD2LNqWB_register_Asm_16: case ARM::VLD2LNqWB_register_Asm_P16:
5582 case ARM::VLD2LNqWB_register_Asm_I16: case ARM::VLD2LNqWB_register_Asm_S16:
5583 case ARM::VLD2LNqWB_register_Asm_U16: case ARM::VLD2LNqWB_register_Asm_32:
5584 case ARM::VLD2LNqWB_register_Asm_F: case ARM::VLD2LNqWB_register_Asm_F32:
5585 case ARM::VLD2LNqWB_register_Asm_I32: case ARM::VLD2LNqWB_register_Asm_S32:
5586 case ARM::VLD2LNqWB_register_Asm_U32: {
5588 // Shuffle the operands around so the lane index operand is in the
5591 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5592 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5593 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5595 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5596 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5597 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5598 TmpInst.addOperand(Inst.getOperand(4)); // Rm
5599 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5600 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5602 TmpInst.addOperand(Inst.getOperand(1)); // lane
5603 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
5604 TmpInst.addOperand(Inst.getOperand(6));
5609 case ARM::VLD1LNdWB_fixed_Asm_8: case ARM::VLD1LNdWB_fixed_Asm_P8:
5610 case ARM::VLD1LNdWB_fixed_Asm_I8: case ARM::VLD1LNdWB_fixed_Asm_S8:
5611 case ARM::VLD1LNdWB_fixed_Asm_U8: case ARM::VLD1LNdWB_fixed_Asm_16:
5612 case ARM::VLD1LNdWB_fixed_Asm_P16: case ARM::VLD1LNdWB_fixed_Asm_I16:
5613 case ARM::VLD1LNdWB_fixed_Asm_S16: case ARM::VLD1LNdWB_fixed_Asm_U16:
5614 case ARM::VLD1LNdWB_fixed_Asm_32: case ARM::VLD1LNdWB_fixed_Asm_F:
5615 case ARM::VLD1LNdWB_fixed_Asm_F32: case ARM::VLD1LNdWB_fixed_Asm_I32:
5616 case ARM::VLD1LNdWB_fixed_Asm_S32: case ARM::VLD1LNdWB_fixed_Asm_U32: {
5618 // Shuffle the operands around so the lane index operand is in the
5621 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5622 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5623 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5624 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5625 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5626 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
5627 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5628 TmpInst.addOperand(Inst.getOperand(1)); // lane
5629 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5630 TmpInst.addOperand(Inst.getOperand(5));
5635 case ARM::VLD2LNdWB_fixed_Asm_8: case ARM::VLD2LNdWB_fixed_Asm_P8:
5636 case ARM::VLD2LNdWB_fixed_Asm_I8: case ARM::VLD2LNdWB_fixed_Asm_S8:
5637 case ARM::VLD2LNdWB_fixed_Asm_U8: case ARM::VLD2LNdWB_fixed_Asm_16:
5638 case ARM::VLD2LNdWB_fixed_Asm_P16: case ARM::VLD2LNdWB_fixed_Asm_I16:
5639 case ARM::VLD2LNdWB_fixed_Asm_S16: case ARM::VLD2LNdWB_fixed_Asm_U16:
5640 case ARM::VLD2LNdWB_fixed_Asm_32: case ARM::VLD2LNdWB_fixed_Asm_F:
5641 case ARM::VLD2LNdWB_fixed_Asm_F32: case ARM::VLD2LNdWB_fixed_Asm_I32:
5642 case ARM::VLD2LNdWB_fixed_Asm_S32: case ARM::VLD2LNdWB_fixed_Asm_U32:
5643 case ARM::VLD2LNqWB_fixed_Asm_16: case ARM::VLD2LNqWB_fixed_Asm_P16:
5644 case ARM::VLD2LNqWB_fixed_Asm_I16: case ARM::VLD2LNqWB_fixed_Asm_S16:
5645 case ARM::VLD2LNqWB_fixed_Asm_U16: case ARM::VLD2LNqWB_fixed_Asm_32:
5646 case ARM::VLD2LNqWB_fixed_Asm_F: case ARM::VLD2LNqWB_fixed_Asm_F32:
5647 case ARM::VLD2LNqWB_fixed_Asm_I32: case ARM::VLD2LNqWB_fixed_Asm_S32:
5648 case ARM::VLD2LNqWB_fixed_Asm_U32: {
5650 // Shuffle the operands around so the lane index operand is in the
5653 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5654 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5655 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5657 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5658 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5659 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5660 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
5661 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5662 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5664 TmpInst.addOperand(Inst.getOperand(1)); // lane
5665 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5666 TmpInst.addOperand(Inst.getOperand(5));
5671 case ARM::VLD1LNdAsm_8: case ARM::VLD1LNdAsm_P8: case ARM::VLD1LNdAsm_I8:
5672 case ARM::VLD1LNdAsm_S8: case ARM::VLD1LNdAsm_U8: case ARM::VLD1LNdAsm_16:
5673 case ARM::VLD1LNdAsm_P16: case ARM::VLD1LNdAsm_I16: case ARM::VLD1LNdAsm_S16:
5674 case ARM::VLD1LNdAsm_U16: case ARM::VLD1LNdAsm_32: case ARM::VLD1LNdAsm_F:
5675 case ARM::VLD1LNdAsm_F32: case ARM::VLD1LNdAsm_I32: case ARM::VLD1LNdAsm_S32:
5676 case ARM::VLD1LNdAsm_U32: {
5678 // Shuffle the operands around so the lane index operand is in the
5681 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5682 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5683 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5684 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5685 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5686 TmpInst.addOperand(Inst.getOperand(1)); // lane
5687 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5688 TmpInst.addOperand(Inst.getOperand(5));
5693 case ARM::VLD2LNdAsm_8: case ARM::VLD2LNdAsm_P8: case ARM::VLD2LNdAsm_I8:
5694 case ARM::VLD2LNdAsm_S8: case ARM::VLD2LNdAsm_U8: case ARM::VLD2LNdAsm_16:
5695 case ARM::VLD2LNdAsm_P16: case ARM::VLD2LNdAsm_I16: case ARM::VLD2LNdAsm_S16:
5696 case ARM::VLD2LNdAsm_U16: case ARM::VLD2LNdAsm_32: case ARM::VLD2LNdAsm_F:
5697 case ARM::VLD2LNdAsm_F32: case ARM::VLD2LNdAsm_I32: case ARM::VLD2LNdAsm_S32:
5698 case ARM::VLD2LNdAsm_U32: case ARM::VLD2LNqAsm_16: case ARM::VLD2LNqAsm_P16:
5699 case ARM::VLD2LNqAsm_I16: case ARM::VLD2LNqAsm_S16: case ARM::VLD2LNqAsm_U16:
5700 case ARM::VLD2LNqAsm_32: case ARM::VLD2LNqAsm_F: case ARM::VLD2LNqAsm_F32:
5701 case ARM::VLD2LNqAsm_I32: case ARM::VLD2LNqAsm_S32:
5702 case ARM::VLD2LNqAsm_U32: {
5704 // Shuffle the operands around so the lane index operand is in the
5707 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5708 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5709 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5711 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5712 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5713 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5714 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5716 TmpInst.addOperand(Inst.getOperand(1)); // lane
5717 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5718 TmpInst.addOperand(Inst.getOperand(5));
5722 // Handle the Thumb2 mode MOV complex aliases.
5724 case ARM::t2MOVSsi: {
5725 // Which instruction to expand to depends on the CCOut operand and
5726 // whether we're in an IT block if the register operands are low
5728 bool isNarrow = false;
5729 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
5730 isARMLowRegister(Inst.getOperand(1).getReg()) &&
5731 inITBlock() == (Inst.getOpcode() == ARM::t2MOVsi))
5735 switch(ARM_AM::getSORegShOp(Inst.getOperand(2).getImm())) {
5736 default: llvm_unreachable("unexpected opcode!");
5737 case ARM_AM::asr: newOpc = isNarrow ? ARM::tASRri : ARM::t2ASRri; break;
5738 case ARM_AM::lsr: newOpc = isNarrow ? ARM::tLSRri : ARM::t2LSRri; break;
5739 case ARM_AM::lsl: newOpc = isNarrow ? ARM::tLSLri : ARM::t2LSLri; break;
5740 case ARM_AM::ror: newOpc = ARM::t2RORri; isNarrow = false; break;
5742 unsigned Ammount = ARM_AM::getSORegOffset(Inst.getOperand(2).getImm());
5743 if (Ammount == 32) Ammount = 0;
5744 TmpInst.setOpcode(newOpc);
5745 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5747 TmpInst.addOperand(MCOperand::CreateReg(
5748 Inst.getOpcode() == ARM::t2MOVSsi ? ARM::CPSR : 0));
5749 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5750 TmpInst.addOperand(MCOperand::CreateImm(Ammount));
5751 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
5752 TmpInst.addOperand(Inst.getOperand(4));
5754 TmpInst.addOperand(MCOperand::CreateReg(
5755 Inst.getOpcode() == ARM::t2MOVSsi ? ARM::CPSR : 0));
5759 // Handle the ARM mode MOV complex aliases.
5764 ARM_AM::ShiftOpc ShiftTy;
5765 switch(Inst.getOpcode()) {
5766 default: llvm_unreachable("unexpected opcode!");
5767 case ARM::ASRr: ShiftTy = ARM_AM::asr; break;
5768 case ARM::LSRr: ShiftTy = ARM_AM::lsr; break;
5769 case ARM::LSLr: ShiftTy = ARM_AM::lsl; break;
5770 case ARM::RORr: ShiftTy = ARM_AM::ror; break;
5772 // A shift by zero is a plain MOVr, not a MOVsi.
5773 unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, 0);
5775 TmpInst.setOpcode(ARM::MOVsr);
5776 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5777 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5778 TmpInst.addOperand(Inst.getOperand(2)); // Rm
5779 TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
5780 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
5781 TmpInst.addOperand(Inst.getOperand(4));
5782 TmpInst.addOperand(Inst.getOperand(5)); // cc_out
5790 ARM_AM::ShiftOpc ShiftTy;
5791 switch(Inst.getOpcode()) {
5792 default: llvm_unreachable("unexpected opcode!");
5793 case ARM::ASRi: ShiftTy = ARM_AM::asr; break;
5794 case ARM::LSRi: ShiftTy = ARM_AM::lsr; break;
5795 case ARM::LSLi: ShiftTy = ARM_AM::lsl; break;
5796 case ARM::RORi: ShiftTy = ARM_AM::ror; break;
5798 // A shift by zero is a plain MOVr, not a MOVsi.
5799 unsigned Amt = Inst.getOperand(2).getImm();
5800 unsigned Opc = Amt == 0 ? ARM::MOVr : ARM::MOVsi;
5801 unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, Amt);
5803 TmpInst.setOpcode(Opc);
5804 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5805 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5806 if (Opc == ARM::MOVsi)
5807 TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
5808 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
5809 TmpInst.addOperand(Inst.getOperand(4));
5810 TmpInst.addOperand(Inst.getOperand(5)); // cc_out
5815 unsigned Shifter = ARM_AM::getSORegOpc(ARM_AM::rrx, 0);
5817 TmpInst.setOpcode(ARM::MOVsi);
5818 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5819 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5820 TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
5821 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5822 TmpInst.addOperand(Inst.getOperand(3));
5823 TmpInst.addOperand(Inst.getOperand(4)); // cc_out
5827 case ARM::t2LDMIA_UPD: {
5828 // If this is a load of a single register, then we should use
5829 // a post-indexed LDR instruction instead, per the ARM ARM.
5830 if (Inst.getNumOperands() != 5)
5833 TmpInst.setOpcode(ARM::t2LDR_POST);
5834 TmpInst.addOperand(Inst.getOperand(4)); // Rt
5835 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
5836 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5837 TmpInst.addOperand(MCOperand::CreateImm(4));
5838 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5839 TmpInst.addOperand(Inst.getOperand(3));
5843 case ARM::t2STMDB_UPD: {
5844 // If this is a store of a single register, then we should use
5845 // a pre-indexed STR instruction instead, per the ARM ARM.
5846 if (Inst.getNumOperands() != 5)
5849 TmpInst.setOpcode(ARM::t2STR_PRE);
5850 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
5851 TmpInst.addOperand(Inst.getOperand(4)); // Rt
5852 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5853 TmpInst.addOperand(MCOperand::CreateImm(-4));
5854 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5855 TmpInst.addOperand(Inst.getOperand(3));
5859 case ARM::LDMIA_UPD:
5860 // If this is a load of a single register via a 'pop', then we should use
5861 // a post-indexed LDR instruction instead, per the ARM ARM.
5862 if (static_cast<ARMOperand*>(Operands[0])->getToken() == "pop" &&
5863 Inst.getNumOperands() == 5) {
5865 TmpInst.setOpcode(ARM::LDR_POST_IMM);
5866 TmpInst.addOperand(Inst.getOperand(4)); // Rt
5867 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
5868 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5869 TmpInst.addOperand(MCOperand::CreateReg(0)); // am2offset
5870 TmpInst.addOperand(MCOperand::CreateImm(4));
5871 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5872 TmpInst.addOperand(Inst.getOperand(3));
5877 case ARM::STMDB_UPD:
5878 // If this is a store of a single register via a 'push', then we should use
5879 // a pre-indexed STR instruction instead, per the ARM ARM.
5880 if (static_cast<ARMOperand*>(Operands[0])->getToken() == "push" &&
5881 Inst.getNumOperands() == 5) {
5883 TmpInst.setOpcode(ARM::STR_PRE_IMM);
5884 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
5885 TmpInst.addOperand(Inst.getOperand(4)); // Rt
5886 TmpInst.addOperand(Inst.getOperand(1)); // addrmode_imm12
5887 TmpInst.addOperand(MCOperand::CreateImm(-4));
5888 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5889 TmpInst.addOperand(Inst.getOperand(3));
5893 case ARM::t2ADDri12:
5894 // If the immediate fits for encoding T3 (t2ADDri) and the generic "add"
5895 // mnemonic was used (not "addw"), encoding T3 is preferred.
5896 if (static_cast<ARMOperand*>(Operands[0])->getToken() != "add" ||
5897 ARM_AM::getT2SOImmVal(Inst.getOperand(2).getImm()) == -1)
5899 Inst.setOpcode(ARM::t2ADDri);
5900 Inst.addOperand(MCOperand::CreateReg(0)); // cc_out
5902 case ARM::t2SUBri12:
5903 // If the immediate fits for encoding T3 (t2SUBri) and the generic "sub"
5904 // mnemonic was used (not "subw"), encoding T3 is preferred.
5905 if (static_cast<ARMOperand*>(Operands[0])->getToken() != "sub" ||
5906 ARM_AM::getT2SOImmVal(Inst.getOperand(2).getImm()) == -1)
5908 Inst.setOpcode(ARM::t2SUBri);
5909 Inst.addOperand(MCOperand::CreateReg(0)); // cc_out
5912 // If the immediate is in the range 0-7, we want tADDi3 iff Rd was
5913 // explicitly specified. From the ARM ARM: "Encoding T1 is preferred
5914 // to encoding T2 if <Rd> is specified and encoding T2 is preferred
5915 // to encoding T1 if <Rd> is omitted."
5916 if (Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
5917 Inst.setOpcode(ARM::tADDi3);
5922 // If the immediate is in the range 0-7, we want tADDi3 iff Rd was
5923 // explicitly specified. From the ARM ARM: "Encoding T1 is preferred
5924 // to encoding T2 if <Rd> is specified and encoding T2 is preferred
5925 // to encoding T1 if <Rd> is omitted."
5926 if (Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
5927 Inst.setOpcode(ARM::tSUBi3);
5931 case ARM::t2ADDrr: {
5932 // If the destination and first source operand are the same, and
5933 // there's no setting of the flags, use encoding T2 instead of T3.
5934 // Note that this is only for ADD, not SUB. This mirrors the system
5935 // 'as' behaviour. Make sure the wide encoding wasn't explicit.
5936 if (Inst.getOperand(0).getReg() != Inst.getOperand(1).getReg() ||
5937 Inst.getOperand(5).getReg() != 0 ||
5938 (static_cast<ARMOperand*>(Operands[3])->isToken() &&
5939 static_cast<ARMOperand*>(Operands[3])->getToken() == ".w"))
5942 TmpInst.setOpcode(ARM::tADDhirr);
5943 TmpInst.addOperand(Inst.getOperand(0));
5944 TmpInst.addOperand(Inst.getOperand(0));
5945 TmpInst.addOperand(Inst.getOperand(2));
5946 TmpInst.addOperand(Inst.getOperand(3));
5947 TmpInst.addOperand(Inst.getOperand(4));
5952 // A Thumb conditional branch outside of an IT block is a tBcc.
5953 if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock()) {
5954 Inst.setOpcode(ARM::tBcc);
5959 // A Thumb2 conditional branch outside of an IT block is a t2Bcc.
5960 if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock()){
5961 Inst.setOpcode(ARM::t2Bcc);
5966 // If the conditional is AL or we're in an IT block, we really want t2B.
5967 if (Inst.getOperand(1).getImm() == ARMCC::AL || inITBlock()) {
5968 Inst.setOpcode(ARM::t2B);
5973 // If the conditional is AL, we really want tB.
5974 if (Inst.getOperand(1).getImm() == ARMCC::AL) {
5975 Inst.setOpcode(ARM::tB);
5980 // If the register list contains any high registers, or if the writeback
5981 // doesn't match what tLDMIA can do, we need to use the 32-bit encoding
5982 // instead if we're in Thumb2. Otherwise, this should have generated
5983 // an error in validateInstruction().
5984 unsigned Rn = Inst.getOperand(0).getReg();
5985 bool hasWritebackToken =
5986 (static_cast<ARMOperand*>(Operands[3])->isToken() &&
5987 static_cast<ARMOperand*>(Operands[3])->getToken() == "!");
5988 bool listContainsBase;
5989 if (checkLowRegisterList(Inst, 3, Rn, 0, listContainsBase) ||
5990 (!listContainsBase && !hasWritebackToken) ||
5991 (listContainsBase && hasWritebackToken)) {
5992 // 16-bit encoding isn't sufficient. Switch to the 32-bit version.
5993 assert (isThumbTwo());
5994 Inst.setOpcode(hasWritebackToken ? ARM::t2LDMIA_UPD : ARM::t2LDMIA);
5995 // If we're switching to the updating version, we need to insert
5996 // the writeback tied operand.
5997 if (hasWritebackToken)
5998 Inst.insert(Inst.begin(),
5999 MCOperand::CreateReg(Inst.getOperand(0).getReg()));
6004 case ARM::tSTMIA_UPD: {
6005 // If the register list contains any high registers, we need to use
6006 // the 32-bit encoding instead if we're in Thumb2. Otherwise, this
6007 // should have generated an error in validateInstruction().
6008 unsigned Rn = Inst.getOperand(0).getReg();
6009 bool listContainsBase;
6010 if (checkLowRegisterList(Inst, 4, Rn, 0, listContainsBase)) {
6011 // 16-bit encoding isn't sufficient. Switch to the 32-bit version.
6012 assert (isThumbTwo());
6013 Inst.setOpcode(ARM::t2STMIA_UPD);
6019 bool listContainsBase;
6020 // If the register list contains any high registers, we need to use
6021 // the 32-bit encoding instead if we're in Thumb2. Otherwise, this
6022 // should have generated an error in validateInstruction().
6023 if (!checkLowRegisterList(Inst, 2, 0, ARM::PC, listContainsBase))
6025 assert (isThumbTwo());
6026 Inst.setOpcode(ARM::t2LDMIA_UPD);
6027 // Add the base register and writeback operands.
6028 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
6029 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
6033 bool listContainsBase;
6034 if (!checkLowRegisterList(Inst, 2, 0, ARM::LR, listContainsBase))
6036 assert (isThumbTwo());
6037 Inst.setOpcode(ARM::t2STMDB_UPD);
6038 // Add the base register and writeback operands.
6039 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
6040 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
6044 // If we can use the 16-bit encoding and the user didn't explicitly
6045 // request the 32-bit variant, transform it here.
6046 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
6047 Inst.getOperand(1).getImm() <= 255 &&
6048 ((!inITBlock() && Inst.getOperand(2).getImm() == ARMCC::AL &&
6049 Inst.getOperand(4).getReg() == ARM::CPSR) ||
6050 (inITBlock() && Inst.getOperand(4).getReg() == 0)) &&
6051 (!static_cast<ARMOperand*>(Operands[2])->isToken() ||
6052 static_cast<ARMOperand*>(Operands[2])->getToken() != ".w")) {
6053 // The operands aren't in the same order for tMOVi8...
6055 TmpInst.setOpcode(ARM::tMOVi8);
6056 TmpInst.addOperand(Inst.getOperand(0));
6057 TmpInst.addOperand(Inst.getOperand(4));
6058 TmpInst.addOperand(Inst.getOperand(1));
6059 TmpInst.addOperand(Inst.getOperand(2));
6060 TmpInst.addOperand(Inst.getOperand(3));
6067 // If we can use the 16-bit encoding and the user didn't explicitly
6068 // request the 32-bit variant, transform it here.
6069 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
6070 isARMLowRegister(Inst.getOperand(1).getReg()) &&
6071 Inst.getOperand(2).getImm() == ARMCC::AL &&
6072 Inst.getOperand(4).getReg() == ARM::CPSR &&
6073 (!static_cast<ARMOperand*>(Operands[2])->isToken() ||
6074 static_cast<ARMOperand*>(Operands[2])->getToken() != ".w")) {
6075 // The operands aren't the same for tMOV[S]r... (no cc_out)
6077 TmpInst.setOpcode(Inst.getOperand(4).getReg() ? ARM::tMOVSr : ARM::tMOVr);
6078 TmpInst.addOperand(Inst.getOperand(0));
6079 TmpInst.addOperand(Inst.getOperand(1));
6080 TmpInst.addOperand(Inst.getOperand(2));
6081 TmpInst.addOperand(Inst.getOperand(3));
6091 // If we can use the 16-bit encoding and the user didn't explicitly
6092 // request the 32-bit variant, transform it here.
6093 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
6094 isARMLowRegister(Inst.getOperand(1).getReg()) &&
6095 Inst.getOperand(2).getImm() == 0 &&
6096 (!static_cast<ARMOperand*>(Operands[2])->isToken() ||
6097 static_cast<ARMOperand*>(Operands[2])->getToken() != ".w")) {
6099 switch (Inst.getOpcode()) {
6100 default: llvm_unreachable("Illegal opcode!");
6101 case ARM::t2SXTH: NewOpc = ARM::tSXTH; break;
6102 case ARM::t2SXTB: NewOpc = ARM::tSXTB; break;
6103 case ARM::t2UXTH: NewOpc = ARM::tUXTH; break;
6104 case ARM::t2UXTB: NewOpc = ARM::tUXTB; break;
6106 // The operands aren't the same for thumb1 (no rotate operand).
6108 TmpInst.setOpcode(NewOpc);
6109 TmpInst.addOperand(Inst.getOperand(0));
6110 TmpInst.addOperand(Inst.getOperand(1));
6111 TmpInst.addOperand(Inst.getOperand(3));
6112 TmpInst.addOperand(Inst.getOperand(4));
6119 ARM_AM::ShiftOpc SOpc = ARM_AM::getSORegShOp(Inst.getOperand(2).getImm());
6120 if (SOpc == ARM_AM::rrx) return false;
6121 if (ARM_AM::getSORegOffset(Inst.getOperand(2).getImm()) == 0) {
6122 // Shifting by zero is accepted as a vanilla 'MOVr'
6124 TmpInst.setOpcode(ARM::MOVr);
6125 TmpInst.addOperand(Inst.getOperand(0));
6126 TmpInst.addOperand(Inst.getOperand(1));
6127 TmpInst.addOperand(Inst.getOperand(3));
6128 TmpInst.addOperand(Inst.getOperand(4));
6129 TmpInst.addOperand(Inst.getOperand(5));
6136 // The mask bits for all but the first condition are represented as
6137 // the low bit of the condition code value implies 't'. We currently
6138 // always have 1 implies 't', so XOR toggle the bits if the low bit
6139 // of the condition code is zero. The encoding also expects the low
6140 // bit of the condition to be encoded as bit 4 of the mask operand,
6141 // so mask that in if needed
6142 MCOperand &MO = Inst.getOperand(1);
6143 unsigned Mask = MO.getImm();
6144 unsigned OrigMask = Mask;
6145 unsigned TZ = CountTrailingZeros_32(Mask);
6146 if ((Inst.getOperand(0).getImm() & 1) == 0) {
6147 assert(Mask && TZ <= 3 && "illegal IT mask value!");
6148 for (unsigned i = 3; i != TZ; --i)
6154 // Set up the IT block state according to the IT instruction we just
6156 assert(!inITBlock() && "nested IT blocks?!");
6157 ITState.Cond = ARMCC::CondCodes(Inst.getOperand(0).getImm());
6158 ITState.Mask = OrigMask; // Use the original mask, not the updated one.
6159 ITState.CurPosition = 0;
6160 ITState.FirstCond = true;
6167 unsigned ARMAsmParser::checkTargetMatchPredicate(MCInst &Inst) {
6168 // 16-bit thumb arithmetic instructions either require or preclude the 'S'
6169 // suffix depending on whether they're in an IT block or not.
6170 unsigned Opc = Inst.getOpcode();
6171 const MCInstrDesc &MCID = getInstDesc(Opc);
6172 if (MCID.TSFlags & ARMII::ThumbArithFlagSetting) {
6173 assert(MCID.hasOptionalDef() &&
6174 "optionally flag setting instruction missing optional def operand");
6175 assert(MCID.NumOperands == Inst.getNumOperands() &&
6176 "operand count mismatch!");
6177 // Find the optional-def operand (cc_out).
6180 !MCID.OpInfo[OpNo].isOptionalDef() && OpNo < MCID.NumOperands;
6183 // If we're parsing Thumb1, reject it completely.
6184 if (isThumbOne() && Inst.getOperand(OpNo).getReg() != ARM::CPSR)
6185 return Match_MnemonicFail;
6186 // If we're parsing Thumb2, which form is legal depends on whether we're
6188 if (isThumbTwo() && Inst.getOperand(OpNo).getReg() != ARM::CPSR &&
6190 return Match_RequiresITBlock;
6191 if (isThumbTwo() && Inst.getOperand(OpNo).getReg() == ARM::CPSR &&
6193 return Match_RequiresNotITBlock;
6195 // Some high-register supporting Thumb1 encodings only allow both registers
6196 // to be from r0-r7 when in Thumb2.
6197 else if (Opc == ARM::tADDhirr && isThumbOne() &&
6198 isARMLowRegister(Inst.getOperand(1).getReg()) &&
6199 isARMLowRegister(Inst.getOperand(2).getReg()))
6200 return Match_RequiresThumb2;
6201 // Others only require ARMv6 or later.
6202 else if (Opc == ARM::tMOVr && isThumbOne() && !hasV6Ops() &&
6203 isARMLowRegister(Inst.getOperand(0).getReg()) &&
6204 isARMLowRegister(Inst.getOperand(1).getReg()))
6205 return Match_RequiresV6;
6206 return Match_Success;
6210 MatchAndEmitInstruction(SMLoc IDLoc,
6211 SmallVectorImpl<MCParsedAsmOperand*> &Operands,
6215 unsigned MatchResult;
6216 MatchResult = MatchInstructionImpl(Operands, Inst, ErrorInfo);
6217 switch (MatchResult) {
6220 // Context sensitive operand constraints aren't handled by the matcher,
6221 // so check them here.
6222 if (validateInstruction(Inst, Operands)) {
6223 // Still progress the IT block, otherwise one wrong condition causes
6224 // nasty cascading errors.
6225 forwardITPosition();
6229 // Some instructions need post-processing to, for example, tweak which
6230 // encoding is selected. Loop on it while changes happen so the
6231 // individual transformations can chain off each other. E.g.,
6232 // tPOP(r8)->t2LDMIA_UPD(sp,r8)->t2STR_POST(sp,r8)
6233 while (processInstruction(Inst, Operands))
6236 // Only move forward at the very end so that everything in validate
6237 // and process gets a consistent answer about whether we're in an IT
6239 forwardITPosition();
6241 Out.EmitInstruction(Inst);
6243 case Match_MissingFeature:
6244 Error(IDLoc, "instruction requires a CPU feature not currently enabled");
6246 case Match_InvalidOperand: {
6247 SMLoc ErrorLoc = IDLoc;
6248 if (ErrorInfo != ~0U) {
6249 if (ErrorInfo >= Operands.size())
6250 return Error(IDLoc, "too few operands for instruction");
6252 ErrorLoc = ((ARMOperand*)Operands[ErrorInfo])->getStartLoc();
6253 if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
6256 return Error(ErrorLoc, "invalid operand for instruction");
6258 case Match_MnemonicFail:
6259 return Error(IDLoc, "invalid instruction");
6260 case Match_ConversionFail:
6261 // The converter function will have already emited a diagnostic.
6263 case Match_RequiresNotITBlock:
6264 return Error(IDLoc, "flag setting instruction only valid outside IT block");
6265 case Match_RequiresITBlock:
6266 return Error(IDLoc, "instruction only valid inside IT block");
6267 case Match_RequiresV6:
6268 return Error(IDLoc, "instruction variant requires ARMv6 or later");
6269 case Match_RequiresThumb2:
6270 return Error(IDLoc, "instruction variant requires Thumb2");
6273 llvm_unreachable("Implement any new match types added!");
6277 /// parseDirective parses the arm specific directives
6278 bool ARMAsmParser::ParseDirective(AsmToken DirectiveID) {
6279 StringRef IDVal = DirectiveID.getIdentifier();
6280 if (IDVal == ".word")
6281 return parseDirectiveWord(4, DirectiveID.getLoc());
6282 else if (IDVal == ".thumb")
6283 return parseDirectiveThumb(DirectiveID.getLoc());
6284 else if (IDVal == ".arm")
6285 return parseDirectiveARM(DirectiveID.getLoc());
6286 else if (IDVal == ".thumb_func")
6287 return parseDirectiveThumbFunc(DirectiveID.getLoc());
6288 else if (IDVal == ".code")
6289 return parseDirectiveCode(DirectiveID.getLoc());
6290 else if (IDVal == ".syntax")
6291 return parseDirectiveSyntax(DirectiveID.getLoc());
6292 else if (IDVal == ".unreq")
6293 return parseDirectiveUnreq(DirectiveID.getLoc());
6294 else if (IDVal == ".arch")
6295 return parseDirectiveArch(DirectiveID.getLoc());
6296 else if (IDVal == ".eabi_attribute")
6297 return parseDirectiveEabiAttr(DirectiveID.getLoc());
6301 /// parseDirectiveWord
6302 /// ::= .word [ expression (, expression)* ]
6303 bool ARMAsmParser::parseDirectiveWord(unsigned Size, SMLoc L) {
6304 if (getLexer().isNot(AsmToken::EndOfStatement)) {
6306 const MCExpr *Value;
6307 if (getParser().ParseExpression(Value))
6310 getParser().getStreamer().EmitValue(Value, Size, 0/*addrspace*/);
6312 if (getLexer().is(AsmToken::EndOfStatement))
6315 // FIXME: Improve diagnostic.
6316 if (getLexer().isNot(AsmToken::Comma))
6317 return Error(L, "unexpected token in directive");
6326 /// parseDirectiveThumb
6328 bool ARMAsmParser::parseDirectiveThumb(SMLoc L) {
6329 if (getLexer().isNot(AsmToken::EndOfStatement))
6330 return Error(L, "unexpected token in directive");
6335 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
6339 /// parseDirectiveARM
6341 bool ARMAsmParser::parseDirectiveARM(SMLoc L) {
6342 if (getLexer().isNot(AsmToken::EndOfStatement))
6343 return Error(L, "unexpected token in directive");
6348 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
6352 /// parseDirectiveThumbFunc
6353 /// ::= .thumbfunc symbol_name
6354 bool ARMAsmParser::parseDirectiveThumbFunc(SMLoc L) {
6355 const MCAsmInfo &MAI = getParser().getStreamer().getContext().getAsmInfo();
6356 bool isMachO = MAI.hasSubsectionsViaSymbols();
6359 // Darwin asm has function name after .thumb_func direction
6362 const AsmToken &Tok = Parser.getTok();
6363 if (Tok.isNot(AsmToken::Identifier) && Tok.isNot(AsmToken::String))
6364 return Error(L, "unexpected token in .thumb_func directive");
6365 Name = Tok.getIdentifier();
6366 Parser.Lex(); // Consume the identifier token.
6369 if (getLexer().isNot(AsmToken::EndOfStatement))
6370 return Error(L, "unexpected token in directive");
6373 // FIXME: assuming function name will be the line following .thumb_func
6375 Name = Parser.getTok().getIdentifier();
6378 // Mark symbol as a thumb symbol.
6379 MCSymbol *Func = getParser().getContext().GetOrCreateSymbol(Name);
6380 getParser().getStreamer().EmitThumbFunc(Func);
6384 /// parseDirectiveSyntax
6385 /// ::= .syntax unified | divided
6386 bool ARMAsmParser::parseDirectiveSyntax(SMLoc L) {
6387 const AsmToken &Tok = Parser.getTok();
6388 if (Tok.isNot(AsmToken::Identifier))
6389 return Error(L, "unexpected token in .syntax directive");
6390 StringRef Mode = Tok.getString();
6391 if (Mode == "unified" || Mode == "UNIFIED")
6393 else if (Mode == "divided" || Mode == "DIVIDED")
6394 return Error(L, "'.syntax divided' arm asssembly not supported");
6396 return Error(L, "unrecognized syntax mode in .syntax directive");
6398 if (getLexer().isNot(AsmToken::EndOfStatement))
6399 return Error(Parser.getTok().getLoc(), "unexpected token in directive");
6402 // TODO tell the MC streamer the mode
6403 // getParser().getStreamer().Emit???();
6407 /// parseDirectiveCode
6408 /// ::= .code 16 | 32
6409 bool ARMAsmParser::parseDirectiveCode(SMLoc L) {
6410 const AsmToken &Tok = Parser.getTok();
6411 if (Tok.isNot(AsmToken::Integer))
6412 return Error(L, "unexpected token in .code directive");
6413 int64_t Val = Parser.getTok().getIntVal();
6419 return Error(L, "invalid operand to .code directive");
6421 if (getLexer().isNot(AsmToken::EndOfStatement))
6422 return Error(Parser.getTok().getLoc(), "unexpected token in directive");
6428 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
6432 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
6438 /// parseDirectiveReq
6439 /// ::= name .req registername
6440 bool ARMAsmParser::parseDirectiveReq(StringRef Name, SMLoc L) {
6441 Parser.Lex(); // Eat the '.req' token.
6443 SMLoc SRegLoc, ERegLoc;
6444 if (ParseRegister(Reg, SRegLoc, ERegLoc)) {
6445 Parser.EatToEndOfStatement();
6446 return Error(SRegLoc, "register name expected");
6449 // Shouldn't be anything else.
6450 if (Parser.getTok().isNot(AsmToken::EndOfStatement)) {
6451 Parser.EatToEndOfStatement();
6452 return Error(Parser.getTok().getLoc(),
6453 "unexpected input in .req directive.");
6456 Parser.Lex(); // Consume the EndOfStatement
6458 if (RegisterReqs.GetOrCreateValue(Name, Reg).getValue() != Reg)
6459 return Error(SRegLoc, "redefinition of '" + Name +
6460 "' does not match original.");
6465 /// parseDirectiveUneq
6466 /// ::= .unreq registername
6467 bool ARMAsmParser::parseDirectiveUnreq(SMLoc L) {
6468 if (Parser.getTok().isNot(AsmToken::Identifier)) {
6469 Parser.EatToEndOfStatement();
6470 return Error(L, "unexpected input in .unreq directive.");
6472 RegisterReqs.erase(Parser.getTok().getIdentifier());
6473 Parser.Lex(); // Eat the identifier.
6477 /// parseDirectiveArch
6479 bool ARMAsmParser::parseDirectiveArch(SMLoc L) {
6483 /// parseDirectiveEabiAttr
6484 /// ::= .eabi_attribute int, int
6485 bool ARMAsmParser::parseDirectiveEabiAttr(SMLoc L) {
6489 extern "C" void LLVMInitializeARMAsmLexer();
6491 /// Force static initialization.
6492 extern "C" void LLVMInitializeARMAsmParser() {
6493 RegisterMCAsmParser<ARMAsmParser> X(TheARMTarget);
6494 RegisterMCAsmParser<ARMAsmParser> Y(TheThumbTarget);
6495 LLVMInitializeARMAsmLexer();
6498 #define GET_REGISTER_MATCHER
6499 #define GET_MATCHER_IMPLEMENTATION
6500 #include "ARMGenAsmMatcher.inc"