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(isImm() && "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 isFBits16() const {
551 if (!isImm()) return false;
552 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
553 if (!CE) return false;
554 int64_t Value = CE->getValue();
555 return Value >= 0 && Value <= 16;
557 bool isFBits32() const {
558 if (!isImm()) return false;
559 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
560 if (!CE) return false;
561 int64_t Value = CE->getValue();
562 return Value >= 1 && Value <= 32;
564 bool isImm8s4() const {
565 if (!isImm()) return false;
566 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
567 if (!CE) return false;
568 int64_t Value = CE->getValue();
569 return ((Value & 3) == 0) && Value >= -1020 && Value <= 1020;
571 bool isImm0_1020s4() const {
572 if (!isImm()) return false;
573 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
574 if (!CE) return false;
575 int64_t Value = CE->getValue();
576 return ((Value & 3) == 0) && Value >= 0 && Value <= 1020;
578 bool isImm0_508s4() const {
579 if (!isImm()) return false;
580 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
581 if (!CE) return false;
582 int64_t Value = CE->getValue();
583 return ((Value & 3) == 0) && Value >= 0 && Value <= 508;
585 bool isImm0_255() const {
586 if (!isImm()) return false;
587 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
588 if (!CE) return false;
589 int64_t Value = CE->getValue();
590 return Value >= 0 && Value < 256;
592 bool isImm0_1() const {
593 if (!isImm()) return false;
594 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
595 if (!CE) return false;
596 int64_t Value = CE->getValue();
597 return Value >= 0 && Value < 2;
599 bool isImm0_3() const {
600 if (!isImm()) return false;
601 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
602 if (!CE) return false;
603 int64_t Value = CE->getValue();
604 return Value >= 0 && Value < 4;
606 bool isImm0_7() const {
607 if (!isImm()) return false;
608 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
609 if (!CE) return false;
610 int64_t Value = CE->getValue();
611 return Value >= 0 && Value < 8;
613 bool isImm0_15() const {
614 if (!isImm()) return false;
615 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
616 if (!CE) return false;
617 int64_t Value = CE->getValue();
618 return Value >= 0 && Value < 16;
620 bool isImm0_31() const {
621 if (!isImm()) return false;
622 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
623 if (!CE) return false;
624 int64_t Value = CE->getValue();
625 return Value >= 0 && Value < 32;
627 bool isImm0_63() const {
628 if (!isImm()) return false;
629 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
630 if (!CE) return false;
631 int64_t Value = CE->getValue();
632 return Value >= 0 && Value < 64;
634 bool isImm8() const {
635 if (!isImm()) return false;
636 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
637 if (!CE) return false;
638 int64_t Value = CE->getValue();
641 bool isImm16() const {
642 if (!isImm()) return false;
643 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
644 if (!CE) return false;
645 int64_t Value = CE->getValue();
648 bool isImm32() const {
649 if (!isImm()) return false;
650 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
651 if (!CE) return false;
652 int64_t Value = CE->getValue();
655 bool isShrImm8() const {
656 if (!isImm()) return false;
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 (!isImm()) return false;
664 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
665 if (!CE) return false;
666 int64_t Value = CE->getValue();
667 return Value > 0 && Value <= 16;
669 bool isShrImm32() const {
670 if (!isImm()) return false;
671 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
672 if (!CE) return false;
673 int64_t Value = CE->getValue();
674 return Value > 0 && Value <= 32;
676 bool isShrImm64() const {
677 if (!isImm()) return false;
678 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
679 if (!CE) return false;
680 int64_t Value = CE->getValue();
681 return Value > 0 && Value <= 64;
683 bool isImm1_7() const {
684 if (!isImm()) return false;
685 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
686 if (!CE) return false;
687 int64_t Value = CE->getValue();
688 return Value > 0 && Value < 8;
690 bool isImm1_15() const {
691 if (!isImm()) return false;
692 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
693 if (!CE) return false;
694 int64_t Value = CE->getValue();
695 return Value > 0 && Value < 16;
697 bool isImm1_31() const {
698 if (!isImm()) return false;
699 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
700 if (!CE) return false;
701 int64_t Value = CE->getValue();
702 return Value > 0 && Value < 32;
704 bool isImm1_16() const {
705 if (!isImm()) return false;
706 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
707 if (!CE) return false;
708 int64_t Value = CE->getValue();
709 return Value > 0 && Value < 17;
711 bool isImm1_32() const {
712 if (!isImm()) return false;
713 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
714 if (!CE) return false;
715 int64_t Value = CE->getValue();
716 return Value > 0 && Value < 33;
718 bool isImm0_32() const {
719 if (!isImm()) return false;
720 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
721 if (!CE) return false;
722 int64_t Value = CE->getValue();
723 return Value >= 0 && Value < 33;
725 bool isImm0_65535() const {
726 if (!isImm()) return false;
727 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
728 if (!CE) return false;
729 int64_t Value = CE->getValue();
730 return Value >= 0 && Value < 65536;
732 bool isImm0_65535Expr() const {
733 if (!isImm()) return false;
734 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
735 // If it's not a constant expression, it'll generate a fixup and be
737 if (!CE) return true;
738 int64_t Value = CE->getValue();
739 return Value >= 0 && Value < 65536;
741 bool isImm24bit() const {
742 if (!isImm()) return false;
743 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
744 if (!CE) return false;
745 int64_t Value = CE->getValue();
746 return Value >= 0 && Value <= 0xffffff;
748 bool isImmThumbSR() const {
749 if (!isImm()) return false;
750 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
751 if (!CE) return false;
752 int64_t Value = CE->getValue();
753 return Value > 0 && Value < 33;
755 bool isPKHLSLImm() const {
756 if (!isImm()) return false;
757 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
758 if (!CE) return false;
759 int64_t Value = CE->getValue();
760 return Value >= 0 && Value < 32;
762 bool isPKHASRImm() const {
763 if (!isImm()) return false;
764 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
765 if (!CE) return false;
766 int64_t Value = CE->getValue();
767 return Value > 0 && Value <= 32;
769 bool isARMSOImm() const {
770 if (!isImm()) return false;
771 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
772 if (!CE) return false;
773 int64_t Value = CE->getValue();
774 return ARM_AM::getSOImmVal(Value) != -1;
776 bool isARMSOImmNot() const {
777 if (!isImm()) return false;
778 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
779 if (!CE) return false;
780 int64_t Value = CE->getValue();
781 return ARM_AM::getSOImmVal(~Value) != -1;
783 bool isARMSOImmNeg() const {
784 if (!isImm()) return false;
785 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
786 if (!CE) return false;
787 int64_t Value = CE->getValue();
788 return ARM_AM::getSOImmVal(-Value) != -1;
790 bool isT2SOImm() const {
791 if (!isImm()) return false;
792 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
793 if (!CE) return false;
794 int64_t Value = CE->getValue();
795 return ARM_AM::getT2SOImmVal(Value) != -1;
797 bool isT2SOImmNot() const {
798 if (!isImm()) return false;
799 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
800 if (!CE) return false;
801 int64_t Value = CE->getValue();
802 return ARM_AM::getT2SOImmVal(~Value) != -1;
804 bool isT2SOImmNeg() const {
805 if (!isImm()) return false;
806 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
807 if (!CE) return false;
808 int64_t Value = CE->getValue();
809 return ARM_AM::getT2SOImmVal(-Value) != -1;
811 bool isSetEndImm() const {
812 if (!isImm()) return false;
813 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
814 if (!CE) return false;
815 int64_t Value = CE->getValue();
816 return Value == 1 || Value == 0;
818 bool isReg() const { return Kind == k_Register; }
819 bool isRegList() const { return Kind == k_RegisterList; }
820 bool isDPRRegList() const { return Kind == k_DPRRegisterList; }
821 bool isSPRRegList() const { return Kind == k_SPRRegisterList; }
822 bool isToken() const { return Kind == k_Token; }
823 bool isMemBarrierOpt() const { return Kind == k_MemBarrierOpt; }
824 bool isMemory() const { return Kind == k_Memory; }
825 bool isShifterImm() const { return Kind == k_ShifterImmediate; }
826 bool isRegShiftedReg() const { return Kind == k_ShiftedRegister; }
827 bool isRegShiftedImm() const { return Kind == k_ShiftedImmediate; }
828 bool isRotImm() const { return Kind == k_RotateImmediate; }
829 bool isBitfield() const { return Kind == k_BitfieldDescriptor; }
830 bool isPostIdxRegShifted() const { return Kind == k_PostIndexRegister; }
831 bool isPostIdxReg() const {
832 return Kind == k_PostIndexRegister && PostIdxReg.ShiftTy ==ARM_AM::no_shift;
834 bool isMemNoOffset(bool alignOK = false) const {
837 // No offset of any kind.
838 return Memory.OffsetRegNum == 0 && Memory.OffsetImm == 0 &&
839 (alignOK || Memory.Alignment == 0);
841 bool isAlignedMemory() const {
842 return isMemNoOffset(true);
844 bool isAddrMode2() const {
845 if (!isMemory() || Memory.Alignment != 0) return false;
846 // Check for register offset.
847 if (Memory.OffsetRegNum) return true;
848 // Immediate offset in range [-4095, 4095].
849 if (!Memory.OffsetImm) return true;
850 int64_t Val = Memory.OffsetImm->getValue();
851 return Val > -4096 && Val < 4096;
853 bool isAM2OffsetImm() const {
854 if (!isImm()) return false;
855 // Immediate offset in range [-4095, 4095].
856 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
857 if (!CE) return false;
858 int64_t Val = CE->getValue();
859 return Val > -4096 && Val < 4096;
861 bool isAddrMode3() const {
862 // If we have an immediate that's not a constant, treat it as a label
863 // reference needing a fixup. If it is a constant, it's something else
865 if (isImm() && !isa<MCConstantExpr>(getImm()))
867 if (!isMemory() || Memory.Alignment != 0) return false;
868 // No shifts are legal for AM3.
869 if (Memory.ShiftType != ARM_AM::no_shift) return false;
870 // Check for register offset.
871 if (Memory.OffsetRegNum) return true;
872 // Immediate offset in range [-255, 255].
873 if (!Memory.OffsetImm) return true;
874 int64_t Val = Memory.OffsetImm->getValue();
875 return Val > -256 && Val < 256;
877 bool isAM3Offset() const {
878 if (Kind != k_Immediate && Kind != k_PostIndexRegister)
880 if (Kind == k_PostIndexRegister)
881 return PostIdxReg.ShiftTy == ARM_AM::no_shift;
882 // Immediate offset in range [-255, 255].
883 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
884 if (!CE) return false;
885 int64_t Val = CE->getValue();
886 // Special case, #-0 is INT32_MIN.
887 return (Val > -256 && Val < 256) || Val == INT32_MIN;
889 bool isAddrMode5() const {
890 // If we have an immediate that's not a constant, treat it as a label
891 // reference needing a fixup. If it is a constant, it's something else
893 if (isImm() && !isa<MCConstantExpr>(getImm()))
895 if (!isMemory() || Memory.Alignment != 0) return false;
896 // Check for register offset.
897 if (Memory.OffsetRegNum) return false;
898 // Immediate offset in range [-1020, 1020] and a multiple of 4.
899 if (!Memory.OffsetImm) return true;
900 int64_t Val = Memory.OffsetImm->getValue();
901 return (Val >= -1020 && Val <= 1020 && ((Val & 3) == 0)) ||
904 bool isMemTBB() const {
905 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
906 Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0)
910 bool isMemTBH() const {
911 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
912 Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm != 1 ||
913 Memory.Alignment != 0 )
917 bool isMemRegOffset() const {
918 if (!isMemory() || !Memory.OffsetRegNum || Memory.Alignment != 0)
922 bool isT2MemRegOffset() const {
923 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
924 Memory.Alignment != 0)
926 // Only lsl #{0, 1, 2, 3} allowed.
927 if (Memory.ShiftType == ARM_AM::no_shift)
929 if (Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm > 3)
933 bool isMemThumbRR() const {
934 // Thumb reg+reg addressing is simple. Just two registers, a base and
935 // an offset. No shifts, negations or any other complicating factors.
936 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
937 Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0)
939 return isARMLowRegister(Memory.BaseRegNum) &&
940 (!Memory.OffsetRegNum || isARMLowRegister(Memory.OffsetRegNum));
942 bool isMemThumbRIs4() const {
943 if (!isMemory() || Memory.OffsetRegNum != 0 ||
944 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
946 // Immediate offset, multiple of 4 in range [0, 124].
947 if (!Memory.OffsetImm) return true;
948 int64_t Val = Memory.OffsetImm->getValue();
949 return Val >= 0 && Val <= 124 && (Val % 4) == 0;
951 bool isMemThumbRIs2() const {
952 if (!isMemory() || Memory.OffsetRegNum != 0 ||
953 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
955 // Immediate offset, multiple of 4 in range [0, 62].
956 if (!Memory.OffsetImm) return true;
957 int64_t Val = Memory.OffsetImm->getValue();
958 return Val >= 0 && Val <= 62 && (Val % 2) == 0;
960 bool isMemThumbRIs1() const {
961 if (!isMemory() || Memory.OffsetRegNum != 0 ||
962 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
964 // Immediate offset in range [0, 31].
965 if (!Memory.OffsetImm) return true;
966 int64_t Val = Memory.OffsetImm->getValue();
967 return Val >= 0 && Val <= 31;
969 bool isMemThumbSPI() const {
970 if (!isMemory() || Memory.OffsetRegNum != 0 ||
971 Memory.BaseRegNum != ARM::SP || Memory.Alignment != 0)
973 // Immediate offset, multiple of 4 in range [0, 1020].
974 if (!Memory.OffsetImm) return true;
975 int64_t Val = Memory.OffsetImm->getValue();
976 return Val >= 0 && Val <= 1020 && (Val % 4) == 0;
978 bool isMemImm8s4Offset() const {
979 // If we have an immediate that's not a constant, treat it as a label
980 // reference needing a fixup. If it is a constant, it's something else
982 if (isImm() && !isa<MCConstantExpr>(getImm()))
984 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
986 // Immediate offset a multiple of 4 in range [-1020, 1020].
987 if (!Memory.OffsetImm) return true;
988 int64_t Val = Memory.OffsetImm->getValue();
989 return Val >= -1020 && Val <= 1020 && (Val & 3) == 0;
991 bool isMemImm0_1020s4Offset() const {
992 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
994 // Immediate offset a multiple of 4 in range [0, 1020].
995 if (!Memory.OffsetImm) return true;
996 int64_t Val = Memory.OffsetImm->getValue();
997 return Val >= 0 && Val <= 1020 && (Val & 3) == 0;
999 bool isMemImm8Offset() const {
1000 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1002 // Immediate offset in range [-255, 255].
1003 if (!Memory.OffsetImm) return true;
1004 int64_t Val = Memory.OffsetImm->getValue();
1005 return (Val == INT32_MIN) || (Val > -256 && Val < 256);
1007 bool isMemPosImm8Offset() const {
1008 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1010 // Immediate offset in range [0, 255].
1011 if (!Memory.OffsetImm) return true;
1012 int64_t Val = Memory.OffsetImm->getValue();
1013 return Val >= 0 && Val < 256;
1015 bool isMemNegImm8Offset() const {
1016 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1018 // Immediate offset in range [-255, -1].
1019 if (!Memory.OffsetImm) return false;
1020 int64_t Val = Memory.OffsetImm->getValue();
1021 return (Val == INT32_MIN) || (Val > -256 && Val < 0);
1023 bool isMemUImm12Offset() const {
1024 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1026 // Immediate offset in range [0, 4095].
1027 if (!Memory.OffsetImm) return true;
1028 int64_t Val = Memory.OffsetImm->getValue();
1029 return (Val >= 0 && Val < 4096);
1031 bool isMemImm12Offset() const {
1032 // If we have an immediate that's not a constant, treat it as a label
1033 // reference needing a fixup. If it is a constant, it's something else
1034 // and we reject it.
1035 if (isImm() && !isa<MCConstantExpr>(getImm()))
1038 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1040 // Immediate offset in range [-4095, 4095].
1041 if (!Memory.OffsetImm) return true;
1042 int64_t Val = Memory.OffsetImm->getValue();
1043 return (Val > -4096 && Val < 4096) || (Val == INT32_MIN);
1045 bool isPostIdxImm8() const {
1046 if (!isImm()) return false;
1047 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1048 if (!CE) return false;
1049 int64_t Val = CE->getValue();
1050 return (Val > -256 && Val < 256) || (Val == INT32_MIN);
1052 bool isPostIdxImm8s4() const {
1053 if (!isImm()) return false;
1054 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1055 if (!CE) return false;
1056 int64_t Val = CE->getValue();
1057 return ((Val & 3) == 0 && Val >= -1020 && Val <= 1020) ||
1061 bool isMSRMask() const { return Kind == k_MSRMask; }
1062 bool isProcIFlags() const { return Kind == k_ProcIFlags; }
1065 bool isSingleSpacedVectorList() const {
1066 return Kind == k_VectorList && !VectorList.isDoubleSpaced;
1068 bool isDoubleSpacedVectorList() const {
1069 return Kind == k_VectorList && VectorList.isDoubleSpaced;
1071 bool isVecListOneD() const {
1072 if (!isSingleSpacedVectorList()) return false;
1073 return VectorList.Count == 1;
1076 bool isVecListTwoD() const {
1077 if (!isSingleSpacedVectorList()) return false;
1078 return VectorList.Count == 2;
1081 bool isVecListThreeD() const {
1082 if (!isSingleSpacedVectorList()) return false;
1083 return VectorList.Count == 3;
1086 bool isVecListFourD() const {
1087 if (!isSingleSpacedVectorList()) return false;
1088 return VectorList.Count == 4;
1091 bool isVecListTwoQ() const {
1092 if (!isDoubleSpacedVectorList()) return false;
1093 return VectorList.Count == 2;
1096 bool isSingleSpacedVectorAllLanes() const {
1097 return Kind == k_VectorListAllLanes && !VectorList.isDoubleSpaced;
1099 bool isDoubleSpacedVectorAllLanes() const {
1100 return Kind == k_VectorListAllLanes && VectorList.isDoubleSpaced;
1102 bool isVecListOneDAllLanes() const {
1103 if (!isSingleSpacedVectorAllLanes()) return false;
1104 return VectorList.Count == 1;
1107 bool isVecListTwoDAllLanes() const {
1108 if (!isSingleSpacedVectorAllLanes()) return false;
1109 return VectorList.Count == 2;
1112 bool isVecListTwoQAllLanes() const {
1113 if (!isDoubleSpacedVectorAllLanes()) return false;
1114 return VectorList.Count == 2;
1117 bool isSingleSpacedVectorIndexed() const {
1118 return Kind == k_VectorListIndexed && !VectorList.isDoubleSpaced;
1120 bool isDoubleSpacedVectorIndexed() const {
1121 return Kind == k_VectorListIndexed && VectorList.isDoubleSpaced;
1123 bool isVecListOneDByteIndexed() const {
1124 if (!isSingleSpacedVectorIndexed()) return false;
1125 return VectorList.Count == 1 && VectorList.LaneIndex <= 7;
1128 bool isVecListOneDHWordIndexed() const {
1129 if (!isSingleSpacedVectorIndexed()) return false;
1130 return VectorList.Count == 1 && VectorList.LaneIndex <= 3;
1133 bool isVecListOneDWordIndexed() const {
1134 if (!isSingleSpacedVectorIndexed()) return false;
1135 return VectorList.Count == 1 && VectorList.LaneIndex <= 1;
1138 bool isVecListTwoDByteIndexed() const {
1139 if (!isSingleSpacedVectorIndexed()) return false;
1140 return VectorList.Count == 2 && VectorList.LaneIndex <= 7;
1143 bool isVecListTwoDHWordIndexed() const {
1144 if (!isSingleSpacedVectorIndexed()) return false;
1145 return VectorList.Count == 2 && VectorList.LaneIndex <= 3;
1148 bool isVecListTwoQWordIndexed() const {
1149 if (!isDoubleSpacedVectorIndexed()) return false;
1150 return VectorList.Count == 2 && VectorList.LaneIndex <= 1;
1153 bool isVecListTwoQHWordIndexed() const {
1154 if (!isDoubleSpacedVectorIndexed()) return false;
1155 return VectorList.Count == 2 && VectorList.LaneIndex <= 3;
1158 bool isVecListTwoDWordIndexed() const {
1159 if (!isSingleSpacedVectorIndexed()) return false;
1160 return VectorList.Count == 2 && VectorList.LaneIndex <= 1;
1163 bool isVectorIndex8() const {
1164 if (Kind != k_VectorIndex) return false;
1165 return VectorIndex.Val < 8;
1167 bool isVectorIndex16() const {
1168 if (Kind != k_VectorIndex) return false;
1169 return VectorIndex.Val < 4;
1171 bool isVectorIndex32() const {
1172 if (Kind != k_VectorIndex) return false;
1173 return VectorIndex.Val < 2;
1176 bool isNEONi8splat() const {
1177 if (!isImm()) return false;
1178 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1179 // Must be a constant.
1180 if (!CE) return false;
1181 int64_t Value = CE->getValue();
1182 // i8 value splatted across 8 bytes. The immediate is just the 8 byte
1184 return Value >= 0 && Value < 256;
1187 bool isNEONi16splat() const {
1188 if (!isImm()) return false;
1189 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1190 // Must be a constant.
1191 if (!CE) return false;
1192 int64_t Value = CE->getValue();
1193 // i16 value in the range [0,255] or [0x0100, 0xff00]
1194 return (Value >= 0 && Value < 256) || (Value >= 0x0100 && Value <= 0xff00);
1197 bool isNEONi32splat() const {
1198 if (!isImm()) return false;
1199 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1200 // Must be a constant.
1201 if (!CE) return false;
1202 int64_t Value = CE->getValue();
1203 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X.
1204 return (Value >= 0 && Value < 256) ||
1205 (Value >= 0x0100 && Value <= 0xff00) ||
1206 (Value >= 0x010000 && Value <= 0xff0000) ||
1207 (Value >= 0x01000000 && Value <= 0xff000000);
1210 bool isNEONi32vmov() const {
1211 if (!isImm()) return false;
1212 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1213 // Must be a constant.
1214 if (!CE) return false;
1215 int64_t Value = CE->getValue();
1216 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X,
1217 // for VMOV/VMVN only, 00Xf or 0Xff are also accepted.
1218 return (Value >= 0 && Value < 256) ||
1219 (Value >= 0x0100 && Value <= 0xff00) ||
1220 (Value >= 0x010000 && Value <= 0xff0000) ||
1221 (Value >= 0x01000000 && Value <= 0xff000000) ||
1222 (Value >= 0x01ff && Value <= 0xffff && (Value & 0xff) == 0xff) ||
1223 (Value >= 0x01ffff && Value <= 0xffffff && (Value & 0xffff) == 0xffff);
1225 bool isNEONi32vmovNeg() const {
1226 if (!isImm()) return false;
1227 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1228 // Must be a constant.
1229 if (!CE) return false;
1230 int64_t Value = ~CE->getValue();
1231 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X,
1232 // for VMOV/VMVN only, 00Xf or 0Xff are also accepted.
1233 return (Value >= 0 && Value < 256) ||
1234 (Value >= 0x0100 && Value <= 0xff00) ||
1235 (Value >= 0x010000 && Value <= 0xff0000) ||
1236 (Value >= 0x01000000 && Value <= 0xff000000) ||
1237 (Value >= 0x01ff && Value <= 0xffff && (Value & 0xff) == 0xff) ||
1238 (Value >= 0x01ffff && Value <= 0xffffff && (Value & 0xffff) == 0xffff);
1241 bool isNEONi64splat() const {
1242 if (!isImm()) return false;
1243 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1244 // Must be a constant.
1245 if (!CE) return false;
1246 uint64_t Value = CE->getValue();
1247 // i64 value with each byte being either 0 or 0xff.
1248 for (unsigned i = 0; i < 8; ++i)
1249 if ((Value & 0xff) != 0 && (Value & 0xff) != 0xff) return false;
1253 void addExpr(MCInst &Inst, const MCExpr *Expr) const {
1254 // Add as immediates when possible. Null MCExpr = 0.
1256 Inst.addOperand(MCOperand::CreateImm(0));
1257 else if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr))
1258 Inst.addOperand(MCOperand::CreateImm(CE->getValue()));
1260 Inst.addOperand(MCOperand::CreateExpr(Expr));
1263 void addCondCodeOperands(MCInst &Inst, unsigned N) const {
1264 assert(N == 2 && "Invalid number of operands!");
1265 Inst.addOperand(MCOperand::CreateImm(unsigned(getCondCode())));
1266 unsigned RegNum = getCondCode() == ARMCC::AL ? 0: ARM::CPSR;
1267 Inst.addOperand(MCOperand::CreateReg(RegNum));
1270 void addCoprocNumOperands(MCInst &Inst, unsigned N) const {
1271 assert(N == 1 && "Invalid number of operands!");
1272 Inst.addOperand(MCOperand::CreateImm(getCoproc()));
1275 void addCoprocRegOperands(MCInst &Inst, unsigned N) const {
1276 assert(N == 1 && "Invalid number of operands!");
1277 Inst.addOperand(MCOperand::CreateImm(getCoproc()));
1280 void addCoprocOptionOperands(MCInst &Inst, unsigned N) const {
1281 assert(N == 1 && "Invalid number of operands!");
1282 Inst.addOperand(MCOperand::CreateImm(CoprocOption.Val));
1285 void addITMaskOperands(MCInst &Inst, unsigned N) const {
1286 assert(N == 1 && "Invalid number of operands!");
1287 Inst.addOperand(MCOperand::CreateImm(ITMask.Mask));
1290 void addITCondCodeOperands(MCInst &Inst, unsigned N) const {
1291 assert(N == 1 && "Invalid number of operands!");
1292 Inst.addOperand(MCOperand::CreateImm(unsigned(getCondCode())));
1295 void addCCOutOperands(MCInst &Inst, unsigned N) const {
1296 assert(N == 1 && "Invalid number of operands!");
1297 Inst.addOperand(MCOperand::CreateReg(getReg()));
1300 void addRegOperands(MCInst &Inst, unsigned N) const {
1301 assert(N == 1 && "Invalid number of operands!");
1302 Inst.addOperand(MCOperand::CreateReg(getReg()));
1305 void addRegShiftedRegOperands(MCInst &Inst, unsigned N) const {
1306 assert(N == 3 && "Invalid number of operands!");
1307 assert(isRegShiftedReg() &&
1308 "addRegShiftedRegOperands() on non RegShiftedReg!");
1309 Inst.addOperand(MCOperand::CreateReg(RegShiftedReg.SrcReg));
1310 Inst.addOperand(MCOperand::CreateReg(RegShiftedReg.ShiftReg));
1311 Inst.addOperand(MCOperand::CreateImm(
1312 ARM_AM::getSORegOpc(RegShiftedReg.ShiftTy, RegShiftedReg.ShiftImm)));
1315 void addRegShiftedImmOperands(MCInst &Inst, unsigned N) const {
1316 assert(N == 2 && "Invalid number of operands!");
1317 assert(isRegShiftedImm() &&
1318 "addRegShiftedImmOperands() on non RegShiftedImm!");
1319 Inst.addOperand(MCOperand::CreateReg(RegShiftedImm.SrcReg));
1320 Inst.addOperand(MCOperand::CreateImm(
1321 ARM_AM::getSORegOpc(RegShiftedImm.ShiftTy, RegShiftedImm.ShiftImm)));
1324 void addShifterImmOperands(MCInst &Inst, unsigned N) const {
1325 assert(N == 1 && "Invalid number of operands!");
1326 Inst.addOperand(MCOperand::CreateImm((ShifterImm.isASR << 5) |
1330 void addRegListOperands(MCInst &Inst, unsigned N) const {
1331 assert(N == 1 && "Invalid number of operands!");
1332 const SmallVectorImpl<unsigned> &RegList = getRegList();
1333 for (SmallVectorImpl<unsigned>::const_iterator
1334 I = RegList.begin(), E = RegList.end(); I != E; ++I)
1335 Inst.addOperand(MCOperand::CreateReg(*I));
1338 void addDPRRegListOperands(MCInst &Inst, unsigned N) const {
1339 addRegListOperands(Inst, N);
1342 void addSPRRegListOperands(MCInst &Inst, unsigned N) const {
1343 addRegListOperands(Inst, N);
1346 void addRotImmOperands(MCInst &Inst, unsigned N) const {
1347 assert(N == 1 && "Invalid number of operands!");
1348 // Encoded as val>>3. The printer handles display as 8, 16, 24.
1349 Inst.addOperand(MCOperand::CreateImm(RotImm.Imm >> 3));
1352 void addBitfieldOperands(MCInst &Inst, unsigned N) const {
1353 assert(N == 1 && "Invalid number of operands!");
1354 // Munge the lsb/width into a bitfield mask.
1355 unsigned lsb = Bitfield.LSB;
1356 unsigned width = Bitfield.Width;
1357 // Make a 32-bit mask w/ the referenced bits clear and all other bits set.
1358 uint32_t Mask = ~(((uint32_t)0xffffffff >> lsb) << (32 - width) >>
1359 (32 - (lsb + width)));
1360 Inst.addOperand(MCOperand::CreateImm(Mask));
1363 void addImmOperands(MCInst &Inst, unsigned N) const {
1364 assert(N == 1 && "Invalid number of operands!");
1365 addExpr(Inst, getImm());
1368 void addFBits16Operands(MCInst &Inst, unsigned N) const {
1369 assert(N == 1 && "Invalid number of operands!");
1370 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1371 Inst.addOperand(MCOperand::CreateImm(16 - CE->getValue()));
1374 void addFBits32Operands(MCInst &Inst, unsigned N) const {
1375 assert(N == 1 && "Invalid number of operands!");
1376 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1377 Inst.addOperand(MCOperand::CreateImm(32 - CE->getValue()));
1380 void addFPImmOperands(MCInst &Inst, unsigned N) const {
1381 assert(N == 1 && "Invalid number of operands!");
1382 Inst.addOperand(MCOperand::CreateImm(getFPImm()));
1385 void addImm8s4Operands(MCInst &Inst, unsigned N) const {
1386 assert(N == 1 && "Invalid number of operands!");
1387 // FIXME: We really want to scale the value here, but the LDRD/STRD
1388 // instruction don't encode operands that way yet.
1389 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1390 Inst.addOperand(MCOperand::CreateImm(CE->getValue()));
1393 void addImm0_1020s4Operands(MCInst &Inst, unsigned N) const {
1394 assert(N == 1 && "Invalid number of operands!");
1395 // The immediate is scaled by four in the encoding and is stored
1396 // in the MCInst as such. Lop off the low two bits here.
1397 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1398 Inst.addOperand(MCOperand::CreateImm(CE->getValue() / 4));
1401 void addImm0_508s4Operands(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 addImm1_16Operands(MCInst &Inst, unsigned N) const {
1410 assert(N == 1 && "Invalid number of operands!");
1411 // The constant encodes as the immediate-1, and we store in the instruction
1412 // the bits as encoded, so subtract off one here.
1413 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1414 Inst.addOperand(MCOperand::CreateImm(CE->getValue() - 1));
1417 void addImm1_32Operands(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 addImmThumbSROperands(MCInst &Inst, unsigned N) const {
1426 assert(N == 1 && "Invalid number of operands!");
1427 // The constant encodes as the immediate, except for 32, which encodes as
1429 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1430 unsigned Imm = CE->getValue();
1431 Inst.addOperand(MCOperand::CreateImm((Imm == 32 ? 0 : Imm)));
1434 void addPKHASRImmOperands(MCInst &Inst, unsigned N) const {
1435 assert(N == 1 && "Invalid number of operands!");
1436 // An ASR value of 32 encodes as 0, so that's how we want to add it to
1437 // the instruction as well.
1438 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1439 int Val = CE->getValue();
1440 Inst.addOperand(MCOperand::CreateImm(Val == 32 ? 0 : Val));
1443 void addT2SOImmNotOperands(MCInst &Inst, unsigned N) const {
1444 assert(N == 1 && "Invalid number of operands!");
1445 // The operand is actually a t2_so_imm, but we have its bitwise
1446 // negation in the assembly source, so twiddle it here.
1447 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1448 Inst.addOperand(MCOperand::CreateImm(~CE->getValue()));
1451 void addT2SOImmNegOperands(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
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 addARMSOImmNotOperands(MCInst &Inst, unsigned N) const {
1460 assert(N == 1 && "Invalid number of operands!");
1461 // The operand is actually a so_imm, but we have its bitwise
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 addARMSOImmNegOperands(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
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 addMemBarrierOptOperands(MCInst &Inst, unsigned N) const {
1476 assert(N == 1 && "Invalid number of operands!");
1477 Inst.addOperand(MCOperand::CreateImm(unsigned(getMemBarrierOpt())));
1480 void addMemNoOffsetOperands(MCInst &Inst, unsigned N) const {
1481 assert(N == 1 && "Invalid number of operands!");
1482 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1485 void addAlignedMemoryOperands(MCInst &Inst, unsigned N) const {
1486 assert(N == 2 && "Invalid number of operands!");
1487 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1488 Inst.addOperand(MCOperand::CreateImm(Memory.Alignment));
1491 void addAddrMode2Operands(MCInst &Inst, unsigned N) const {
1492 assert(N == 3 && "Invalid number of operands!");
1493 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1494 if (!Memory.OffsetRegNum) {
1495 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1496 // Special case for #-0
1497 if (Val == INT32_MIN) Val = 0;
1498 if (Val < 0) Val = -Val;
1499 Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift);
1501 // For register offset, we encode the shift type and negation flag
1503 Val = ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add,
1504 Memory.ShiftImm, Memory.ShiftType);
1506 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1507 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1508 Inst.addOperand(MCOperand::CreateImm(Val));
1511 void addAM2OffsetImmOperands(MCInst &Inst, unsigned N) const {
1512 assert(N == 2 && "Invalid number of operands!");
1513 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1514 assert(CE && "non-constant AM2OffsetImm operand!");
1515 int32_t Val = CE->getValue();
1516 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1517 // Special case for #-0
1518 if (Val == INT32_MIN) Val = 0;
1519 if (Val < 0) Val = -Val;
1520 Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift);
1521 Inst.addOperand(MCOperand::CreateReg(0));
1522 Inst.addOperand(MCOperand::CreateImm(Val));
1525 void addAddrMode3Operands(MCInst &Inst, unsigned N) const {
1526 assert(N == 3 && "Invalid number of operands!");
1527 // If we have an immediate that's not a constant, treat it as a label
1528 // reference needing a fixup. If it is a constant, it's something else
1529 // and we reject it.
1531 Inst.addOperand(MCOperand::CreateExpr(getImm()));
1532 Inst.addOperand(MCOperand::CreateReg(0));
1533 Inst.addOperand(MCOperand::CreateImm(0));
1537 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1538 if (!Memory.OffsetRegNum) {
1539 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1540 // Special case for #-0
1541 if (Val == INT32_MIN) Val = 0;
1542 if (Val < 0) Val = -Val;
1543 Val = ARM_AM::getAM3Opc(AddSub, Val);
1545 // For register offset, we encode the shift type and negation flag
1547 Val = ARM_AM::getAM3Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add, 0);
1549 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1550 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1551 Inst.addOperand(MCOperand::CreateImm(Val));
1554 void addAM3OffsetOperands(MCInst &Inst, unsigned N) const {
1555 assert(N == 2 && "Invalid number of operands!");
1556 if (Kind == k_PostIndexRegister) {
1558 ARM_AM::getAM3Opc(PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub, 0);
1559 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
1560 Inst.addOperand(MCOperand::CreateImm(Val));
1565 const MCConstantExpr *CE = static_cast<const MCConstantExpr*>(getImm());
1566 int32_t Val = CE->getValue();
1567 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1568 // Special case for #-0
1569 if (Val == INT32_MIN) Val = 0;
1570 if (Val < 0) Val = -Val;
1571 Val = ARM_AM::getAM3Opc(AddSub, Val);
1572 Inst.addOperand(MCOperand::CreateReg(0));
1573 Inst.addOperand(MCOperand::CreateImm(Val));
1576 void addAddrMode5Operands(MCInst &Inst, unsigned N) const {
1577 assert(N == 2 && "Invalid number of operands!");
1578 // If we have an immediate that's not a constant, treat it as a label
1579 // reference needing a fixup. If it is a constant, it's something else
1580 // and we reject it.
1582 Inst.addOperand(MCOperand::CreateExpr(getImm()));
1583 Inst.addOperand(MCOperand::CreateImm(0));
1587 // The lower two bits are always zero and as such are not encoded.
1588 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0;
1589 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1590 // Special case for #-0
1591 if (Val == INT32_MIN) Val = 0;
1592 if (Val < 0) Val = -Val;
1593 Val = ARM_AM::getAM5Opc(AddSub, Val);
1594 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1595 Inst.addOperand(MCOperand::CreateImm(Val));
1598 void addMemImm8s4OffsetOperands(MCInst &Inst, unsigned N) const {
1599 assert(N == 2 && "Invalid number of operands!");
1600 // If we have an immediate that's not a constant, treat it as a label
1601 // reference needing a fixup. If it is a constant, it's something else
1602 // and we reject it.
1604 Inst.addOperand(MCOperand::CreateExpr(getImm()));
1605 Inst.addOperand(MCOperand::CreateImm(0));
1609 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1610 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1611 Inst.addOperand(MCOperand::CreateImm(Val));
1614 void addMemImm0_1020s4OffsetOperands(MCInst &Inst, unsigned N) const {
1615 assert(N == 2 && "Invalid number of operands!");
1616 // The lower two bits are always zero and as such are not encoded.
1617 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0;
1618 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1619 Inst.addOperand(MCOperand::CreateImm(Val));
1622 void addMemImm8OffsetOperands(MCInst &Inst, unsigned N) const {
1623 assert(N == 2 && "Invalid number of operands!");
1624 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1625 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1626 Inst.addOperand(MCOperand::CreateImm(Val));
1629 void addMemPosImm8OffsetOperands(MCInst &Inst, unsigned N) const {
1630 addMemImm8OffsetOperands(Inst, N);
1633 void addMemNegImm8OffsetOperands(MCInst &Inst, unsigned N) const {
1634 addMemImm8OffsetOperands(Inst, N);
1637 void addMemUImm12OffsetOperands(MCInst &Inst, unsigned N) const {
1638 assert(N == 2 && "Invalid number of operands!");
1639 // If this is an immediate, it's a label reference.
1641 addExpr(Inst, getImm());
1642 Inst.addOperand(MCOperand::CreateImm(0));
1646 // Otherwise, it's a normal memory reg+offset.
1647 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1648 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1649 Inst.addOperand(MCOperand::CreateImm(Val));
1652 void addMemImm12OffsetOperands(MCInst &Inst, unsigned N) const {
1653 assert(N == 2 && "Invalid number of operands!");
1654 // If this is an immediate, it's a label reference.
1656 addExpr(Inst, getImm());
1657 Inst.addOperand(MCOperand::CreateImm(0));
1661 // Otherwise, it's a normal memory reg+offset.
1662 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1663 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1664 Inst.addOperand(MCOperand::CreateImm(Val));
1667 void addMemTBBOperands(MCInst &Inst, unsigned N) const {
1668 assert(N == 2 && "Invalid number of operands!");
1669 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1670 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1673 void addMemTBHOperands(MCInst &Inst, unsigned N) const {
1674 assert(N == 2 && "Invalid number of operands!");
1675 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1676 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1679 void addMemRegOffsetOperands(MCInst &Inst, unsigned N) const {
1680 assert(N == 3 && "Invalid number of operands!");
1682 ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add,
1683 Memory.ShiftImm, Memory.ShiftType);
1684 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1685 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1686 Inst.addOperand(MCOperand::CreateImm(Val));
1689 void addT2MemRegOffsetOperands(MCInst &Inst, unsigned N) const {
1690 assert(N == 3 && "Invalid number of operands!");
1691 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1692 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1693 Inst.addOperand(MCOperand::CreateImm(Memory.ShiftImm));
1696 void addMemThumbRROperands(MCInst &Inst, unsigned N) const {
1697 assert(N == 2 && "Invalid number of operands!");
1698 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1699 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1702 void addMemThumbRIs4Operands(MCInst &Inst, unsigned N) const {
1703 assert(N == 2 && "Invalid number of operands!");
1704 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0;
1705 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1706 Inst.addOperand(MCOperand::CreateImm(Val));
1709 void addMemThumbRIs2Operands(MCInst &Inst, unsigned N) const {
1710 assert(N == 2 && "Invalid number of operands!");
1711 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 2) : 0;
1712 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1713 Inst.addOperand(MCOperand::CreateImm(Val));
1716 void addMemThumbRIs1Operands(MCInst &Inst, unsigned N) const {
1717 assert(N == 2 && "Invalid number of operands!");
1718 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue()) : 0;
1719 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1720 Inst.addOperand(MCOperand::CreateImm(Val));
1723 void addMemThumbSPIOperands(MCInst &Inst, unsigned N) const {
1724 assert(N == 2 && "Invalid number of operands!");
1725 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0;
1726 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1727 Inst.addOperand(MCOperand::CreateImm(Val));
1730 void addPostIdxImm8Operands(MCInst &Inst, unsigned N) const {
1731 assert(N == 1 && "Invalid number of operands!");
1732 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1733 assert(CE && "non-constant post-idx-imm8 operand!");
1734 int Imm = CE->getValue();
1735 bool isAdd = Imm >= 0;
1736 if (Imm == INT32_MIN) Imm = 0;
1737 Imm = (Imm < 0 ? -Imm : Imm) | (int)isAdd << 8;
1738 Inst.addOperand(MCOperand::CreateImm(Imm));
1741 void addPostIdxImm8s4Operands(MCInst &Inst, unsigned N) const {
1742 assert(N == 1 && "Invalid number of operands!");
1743 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1744 assert(CE && "non-constant post-idx-imm8s4 operand!");
1745 int Imm = CE->getValue();
1746 bool isAdd = Imm >= 0;
1747 if (Imm == INT32_MIN) Imm = 0;
1748 // Immediate is scaled by 4.
1749 Imm = ((Imm < 0 ? -Imm : Imm) / 4) | (int)isAdd << 8;
1750 Inst.addOperand(MCOperand::CreateImm(Imm));
1753 void addPostIdxRegOperands(MCInst &Inst, unsigned N) const {
1754 assert(N == 2 && "Invalid number of operands!");
1755 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
1756 Inst.addOperand(MCOperand::CreateImm(PostIdxReg.isAdd));
1759 void addPostIdxRegShiftedOperands(MCInst &Inst, unsigned N) const {
1760 assert(N == 2 && "Invalid number of operands!");
1761 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
1762 // The sign, shift type, and shift amount are encoded in a single operand
1763 // using the AM2 encoding helpers.
1764 ARM_AM::AddrOpc opc = PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub;
1765 unsigned Imm = ARM_AM::getAM2Opc(opc, PostIdxReg.ShiftImm,
1766 PostIdxReg.ShiftTy);
1767 Inst.addOperand(MCOperand::CreateImm(Imm));
1770 void addMSRMaskOperands(MCInst &Inst, unsigned N) const {
1771 assert(N == 1 && "Invalid number of operands!");
1772 Inst.addOperand(MCOperand::CreateImm(unsigned(getMSRMask())));
1775 void addProcIFlagsOperands(MCInst &Inst, unsigned N) const {
1776 assert(N == 1 && "Invalid number of operands!");
1777 Inst.addOperand(MCOperand::CreateImm(unsigned(getProcIFlags())));
1780 void addVecListOperands(MCInst &Inst, unsigned N) const {
1781 assert(N == 1 && "Invalid number of operands!");
1782 Inst.addOperand(MCOperand::CreateReg(VectorList.RegNum));
1785 void addVecListIndexedOperands(MCInst &Inst, unsigned N) const {
1786 assert(N == 2 && "Invalid number of operands!");
1787 Inst.addOperand(MCOperand::CreateReg(VectorList.RegNum));
1788 Inst.addOperand(MCOperand::CreateImm(VectorList.LaneIndex));
1791 void addVectorIndex8Operands(MCInst &Inst, unsigned N) const {
1792 assert(N == 1 && "Invalid number of operands!");
1793 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
1796 void addVectorIndex16Operands(MCInst &Inst, unsigned N) const {
1797 assert(N == 1 && "Invalid number of operands!");
1798 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
1801 void addVectorIndex32Operands(MCInst &Inst, unsigned N) const {
1802 assert(N == 1 && "Invalid number of operands!");
1803 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
1806 void addNEONi8splatOperands(MCInst &Inst, unsigned N) const {
1807 assert(N == 1 && "Invalid number of operands!");
1808 // The immediate encodes the type of constant as well as the value.
1809 // Mask in that this is an i8 splat.
1810 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1811 Inst.addOperand(MCOperand::CreateImm(CE->getValue() | 0xe00));
1814 void addNEONi16splatOperands(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 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1818 unsigned Value = CE->getValue();
1820 Value = (Value >> 8) | 0xa00;
1823 Inst.addOperand(MCOperand::CreateImm(Value));
1826 void addNEONi32splatOperands(MCInst &Inst, unsigned N) const {
1827 assert(N == 1 && "Invalid number of operands!");
1828 // The immediate encodes the type of constant as well as the value.
1829 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1830 unsigned Value = CE->getValue();
1831 if (Value >= 256 && Value <= 0xff00)
1832 Value = (Value >> 8) | 0x200;
1833 else if (Value > 0xffff && Value <= 0xff0000)
1834 Value = (Value >> 16) | 0x400;
1835 else if (Value > 0xffffff)
1836 Value = (Value >> 24) | 0x600;
1837 Inst.addOperand(MCOperand::CreateImm(Value));
1840 void addNEONi32vmovOperands(MCInst &Inst, unsigned N) const {
1841 assert(N == 1 && "Invalid number of operands!");
1842 // The immediate encodes the type of constant as well as the value.
1843 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1844 unsigned Value = CE->getValue();
1845 if (Value >= 256 && Value <= 0xffff)
1846 Value = (Value >> 8) | ((Value & 0xff) ? 0xc00 : 0x200);
1847 else if (Value > 0xffff && Value <= 0xffffff)
1848 Value = (Value >> 16) | ((Value & 0xff) ? 0xd00 : 0x400);
1849 else if (Value > 0xffffff)
1850 Value = (Value >> 24) | 0x600;
1851 Inst.addOperand(MCOperand::CreateImm(Value));
1854 void addNEONi32vmovNegOperands(MCInst &Inst, unsigned N) const {
1855 assert(N == 1 && "Invalid number of operands!");
1856 // The immediate encodes the type of constant as well as the value.
1857 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1858 unsigned Value = ~CE->getValue();
1859 if (Value >= 256 && Value <= 0xffff)
1860 Value = (Value >> 8) | ((Value & 0xff) ? 0xc00 : 0x200);
1861 else if (Value > 0xffff && Value <= 0xffffff)
1862 Value = (Value >> 16) | ((Value & 0xff) ? 0xd00 : 0x400);
1863 else if (Value > 0xffffff)
1864 Value = (Value >> 24) | 0x600;
1865 Inst.addOperand(MCOperand::CreateImm(Value));
1868 void addNEONi64splatOperands(MCInst &Inst, unsigned N) const {
1869 assert(N == 1 && "Invalid number of operands!");
1870 // The immediate encodes the type of constant as well as the value.
1871 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1872 uint64_t Value = CE->getValue();
1874 for (unsigned i = 0; i < 8; ++i, Value >>= 8) {
1875 Imm |= (Value & 1) << i;
1877 Inst.addOperand(MCOperand::CreateImm(Imm | 0x1e00));
1880 virtual void print(raw_ostream &OS) const;
1882 static ARMOperand *CreateITMask(unsigned Mask, SMLoc S) {
1883 ARMOperand *Op = new ARMOperand(k_ITCondMask);
1884 Op->ITMask.Mask = Mask;
1890 static ARMOperand *CreateCondCode(ARMCC::CondCodes CC, SMLoc S) {
1891 ARMOperand *Op = new ARMOperand(k_CondCode);
1898 static ARMOperand *CreateCoprocNum(unsigned CopVal, SMLoc S) {
1899 ARMOperand *Op = new ARMOperand(k_CoprocNum);
1900 Op->Cop.Val = CopVal;
1906 static ARMOperand *CreateCoprocReg(unsigned CopVal, SMLoc S) {
1907 ARMOperand *Op = new ARMOperand(k_CoprocReg);
1908 Op->Cop.Val = CopVal;
1914 static ARMOperand *CreateCoprocOption(unsigned Val, SMLoc S, SMLoc E) {
1915 ARMOperand *Op = new ARMOperand(k_CoprocOption);
1922 static ARMOperand *CreateCCOut(unsigned RegNum, SMLoc S) {
1923 ARMOperand *Op = new ARMOperand(k_CCOut);
1924 Op->Reg.RegNum = RegNum;
1930 static ARMOperand *CreateToken(StringRef Str, SMLoc S) {
1931 ARMOperand *Op = new ARMOperand(k_Token);
1932 Op->Tok.Data = Str.data();
1933 Op->Tok.Length = Str.size();
1939 static ARMOperand *CreateReg(unsigned RegNum, SMLoc S, SMLoc E) {
1940 ARMOperand *Op = new ARMOperand(k_Register);
1941 Op->Reg.RegNum = RegNum;
1947 static ARMOperand *CreateShiftedRegister(ARM_AM::ShiftOpc ShTy,
1952 ARMOperand *Op = new ARMOperand(k_ShiftedRegister);
1953 Op->RegShiftedReg.ShiftTy = ShTy;
1954 Op->RegShiftedReg.SrcReg = SrcReg;
1955 Op->RegShiftedReg.ShiftReg = ShiftReg;
1956 Op->RegShiftedReg.ShiftImm = ShiftImm;
1962 static ARMOperand *CreateShiftedImmediate(ARM_AM::ShiftOpc ShTy,
1966 ARMOperand *Op = new ARMOperand(k_ShiftedImmediate);
1967 Op->RegShiftedImm.ShiftTy = ShTy;
1968 Op->RegShiftedImm.SrcReg = SrcReg;
1969 Op->RegShiftedImm.ShiftImm = ShiftImm;
1975 static ARMOperand *CreateShifterImm(bool isASR, unsigned Imm,
1977 ARMOperand *Op = new ARMOperand(k_ShifterImmediate);
1978 Op->ShifterImm.isASR = isASR;
1979 Op->ShifterImm.Imm = Imm;
1985 static ARMOperand *CreateRotImm(unsigned Imm, SMLoc S, SMLoc E) {
1986 ARMOperand *Op = new ARMOperand(k_RotateImmediate);
1987 Op->RotImm.Imm = Imm;
1993 static ARMOperand *CreateBitfield(unsigned LSB, unsigned Width,
1995 ARMOperand *Op = new ARMOperand(k_BitfieldDescriptor);
1996 Op->Bitfield.LSB = LSB;
1997 Op->Bitfield.Width = Width;
2004 CreateRegList(const SmallVectorImpl<std::pair<unsigned, SMLoc> > &Regs,
2005 SMLoc StartLoc, SMLoc EndLoc) {
2006 KindTy Kind = k_RegisterList;
2008 if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Regs.front().first))
2009 Kind = k_DPRRegisterList;
2010 else if (ARMMCRegisterClasses[ARM::SPRRegClassID].
2011 contains(Regs.front().first))
2012 Kind = k_SPRRegisterList;
2014 ARMOperand *Op = new ARMOperand(Kind);
2015 for (SmallVectorImpl<std::pair<unsigned, SMLoc> >::const_iterator
2016 I = Regs.begin(), E = Regs.end(); I != E; ++I)
2017 Op->Registers.push_back(I->first);
2018 array_pod_sort(Op->Registers.begin(), Op->Registers.end());
2019 Op->StartLoc = StartLoc;
2020 Op->EndLoc = EndLoc;
2024 static ARMOperand *CreateVectorList(unsigned RegNum, unsigned Count,
2025 bool isDoubleSpaced, SMLoc S, SMLoc E) {
2026 ARMOperand *Op = new ARMOperand(k_VectorList);
2027 Op->VectorList.RegNum = RegNum;
2028 Op->VectorList.Count = Count;
2029 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2035 static ARMOperand *CreateVectorListAllLanes(unsigned RegNum, unsigned Count,
2036 bool isDoubleSpaced,
2038 ARMOperand *Op = new ARMOperand(k_VectorListAllLanes);
2039 Op->VectorList.RegNum = RegNum;
2040 Op->VectorList.Count = Count;
2041 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2047 static ARMOperand *CreateVectorListIndexed(unsigned RegNum, unsigned Count,
2049 bool isDoubleSpaced,
2051 ARMOperand *Op = new ARMOperand(k_VectorListIndexed);
2052 Op->VectorList.RegNum = RegNum;
2053 Op->VectorList.Count = Count;
2054 Op->VectorList.LaneIndex = Index;
2055 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2061 static ARMOperand *CreateVectorIndex(unsigned Idx, SMLoc S, SMLoc E,
2063 ARMOperand *Op = new ARMOperand(k_VectorIndex);
2064 Op->VectorIndex.Val = Idx;
2070 static ARMOperand *CreateImm(const MCExpr *Val, SMLoc S, SMLoc E) {
2071 ARMOperand *Op = new ARMOperand(k_Immediate);
2078 static ARMOperand *CreateFPImm(unsigned Val, SMLoc S, MCContext &Ctx) {
2079 ARMOperand *Op = new ARMOperand(k_FPImmediate);
2080 Op->FPImm.Val = Val;
2086 static ARMOperand *CreateMem(unsigned BaseRegNum,
2087 const MCConstantExpr *OffsetImm,
2088 unsigned OffsetRegNum,
2089 ARM_AM::ShiftOpc ShiftType,
2094 ARMOperand *Op = new ARMOperand(k_Memory);
2095 Op->Memory.BaseRegNum = BaseRegNum;
2096 Op->Memory.OffsetImm = OffsetImm;
2097 Op->Memory.OffsetRegNum = OffsetRegNum;
2098 Op->Memory.ShiftType = ShiftType;
2099 Op->Memory.ShiftImm = ShiftImm;
2100 Op->Memory.Alignment = Alignment;
2101 Op->Memory.isNegative = isNegative;
2107 static ARMOperand *CreatePostIdxReg(unsigned RegNum, bool isAdd,
2108 ARM_AM::ShiftOpc ShiftTy,
2111 ARMOperand *Op = new ARMOperand(k_PostIndexRegister);
2112 Op->PostIdxReg.RegNum = RegNum;
2113 Op->PostIdxReg.isAdd = isAdd;
2114 Op->PostIdxReg.ShiftTy = ShiftTy;
2115 Op->PostIdxReg.ShiftImm = ShiftImm;
2121 static ARMOperand *CreateMemBarrierOpt(ARM_MB::MemBOpt Opt, SMLoc S) {
2122 ARMOperand *Op = new ARMOperand(k_MemBarrierOpt);
2123 Op->MBOpt.Val = Opt;
2129 static ARMOperand *CreateProcIFlags(ARM_PROC::IFlags IFlags, SMLoc S) {
2130 ARMOperand *Op = new ARMOperand(k_ProcIFlags);
2131 Op->IFlags.Val = IFlags;
2137 static ARMOperand *CreateMSRMask(unsigned MMask, SMLoc S) {
2138 ARMOperand *Op = new ARMOperand(k_MSRMask);
2139 Op->MMask.Val = MMask;
2146 } // end anonymous namespace.
2148 void ARMOperand::print(raw_ostream &OS) const {
2151 OS << "<fpimm " << getFPImm() << "(" << ARM_AM::getFPImmFloat(getFPImm())
2155 OS << "<ARMCC::" << ARMCondCodeToString(getCondCode()) << ">";
2158 OS << "<ccout " << getReg() << ">";
2160 case k_ITCondMask: {
2161 static const char *MaskStr[] = {
2162 "()", "(t)", "(e)", "(tt)", "(et)", "(te)", "(ee)", "(ttt)", "(ett)",
2163 "(tet)", "(eet)", "(tte)", "(ete)", "(tee)", "(eee)"
2165 assert((ITMask.Mask & 0xf) == ITMask.Mask);
2166 OS << "<it-mask " << MaskStr[ITMask.Mask] << ">";
2170 OS << "<coprocessor number: " << getCoproc() << ">";
2173 OS << "<coprocessor register: " << getCoproc() << ">";
2175 case k_CoprocOption:
2176 OS << "<coprocessor option: " << CoprocOption.Val << ">";
2179 OS << "<mask: " << getMSRMask() << ">";
2182 getImm()->print(OS);
2184 case k_MemBarrierOpt:
2185 OS << "<ARM_MB::" << MemBOptToString(getMemBarrierOpt()) << ">";
2189 << " base:" << Memory.BaseRegNum;
2192 case k_PostIndexRegister:
2193 OS << "post-idx register " << (PostIdxReg.isAdd ? "" : "-")
2194 << PostIdxReg.RegNum;
2195 if (PostIdxReg.ShiftTy != ARM_AM::no_shift)
2196 OS << ARM_AM::getShiftOpcStr(PostIdxReg.ShiftTy) << " "
2197 << PostIdxReg.ShiftImm;
2200 case k_ProcIFlags: {
2201 OS << "<ARM_PROC::";
2202 unsigned IFlags = getProcIFlags();
2203 for (int i=2; i >= 0; --i)
2204 if (IFlags & (1 << i))
2205 OS << ARM_PROC::IFlagsToString(1 << i);
2210 OS << "<register " << getReg() << ">";
2212 case k_ShifterImmediate:
2213 OS << "<shift " << (ShifterImm.isASR ? "asr" : "lsl")
2214 << " #" << ShifterImm.Imm << ">";
2216 case k_ShiftedRegister:
2217 OS << "<so_reg_reg "
2218 << RegShiftedReg.SrcReg << " "
2219 << ARM_AM::getShiftOpcStr(RegShiftedReg.ShiftTy)
2220 << " " << RegShiftedReg.ShiftReg << ">";
2222 case k_ShiftedImmediate:
2223 OS << "<so_reg_imm "
2224 << RegShiftedImm.SrcReg << " "
2225 << ARM_AM::getShiftOpcStr(RegShiftedImm.ShiftTy)
2226 << " #" << RegShiftedImm.ShiftImm << ">";
2228 case k_RotateImmediate:
2229 OS << "<ror " << " #" << (RotImm.Imm * 8) << ">";
2231 case k_BitfieldDescriptor:
2232 OS << "<bitfield " << "lsb: " << Bitfield.LSB
2233 << ", width: " << Bitfield.Width << ">";
2235 case k_RegisterList:
2236 case k_DPRRegisterList:
2237 case k_SPRRegisterList: {
2238 OS << "<register_list ";
2240 const SmallVectorImpl<unsigned> &RegList = getRegList();
2241 for (SmallVectorImpl<unsigned>::const_iterator
2242 I = RegList.begin(), E = RegList.end(); I != E; ) {
2244 if (++I < E) OS << ", ";
2251 OS << "<vector_list " << VectorList.Count << " * "
2252 << VectorList.RegNum << ">";
2254 case k_VectorListAllLanes:
2255 OS << "<vector_list(all lanes) " << VectorList.Count << " * "
2256 << VectorList.RegNum << ">";
2258 case k_VectorListIndexed:
2259 OS << "<vector_list(lane " << VectorList.LaneIndex << ") "
2260 << VectorList.Count << " * " << VectorList.RegNum << ">";
2263 OS << "'" << getToken() << "'";
2266 OS << "<vectorindex " << getVectorIndex() << ">";
2271 /// @name Auto-generated Match Functions
2274 static unsigned MatchRegisterName(StringRef Name);
2278 bool ARMAsmParser::ParseRegister(unsigned &RegNo,
2279 SMLoc &StartLoc, SMLoc &EndLoc) {
2280 StartLoc = Parser.getTok().getLoc();
2281 RegNo = tryParseRegister();
2282 EndLoc = Parser.getTok().getLoc();
2284 return (RegNo == (unsigned)-1);
2287 /// Try to parse a register name. The token must be an Identifier when called,
2288 /// and if it is a register name the token is eaten and the register number is
2289 /// returned. Otherwise return -1.
2291 int ARMAsmParser::tryParseRegister() {
2292 const AsmToken &Tok = Parser.getTok();
2293 if (Tok.isNot(AsmToken::Identifier)) return -1;
2295 std::string lowerCase = Tok.getString().lower();
2296 unsigned RegNum = MatchRegisterName(lowerCase);
2298 RegNum = StringSwitch<unsigned>(lowerCase)
2299 .Case("r13", ARM::SP)
2300 .Case("r14", ARM::LR)
2301 .Case("r15", ARM::PC)
2302 .Case("ip", ARM::R12)
2303 // Additional register name aliases for 'gas' compatibility.
2304 .Case("a1", ARM::R0)
2305 .Case("a2", ARM::R1)
2306 .Case("a3", ARM::R2)
2307 .Case("a4", ARM::R3)
2308 .Case("v1", ARM::R4)
2309 .Case("v2", ARM::R5)
2310 .Case("v3", ARM::R6)
2311 .Case("v4", ARM::R7)
2312 .Case("v5", ARM::R8)
2313 .Case("v6", ARM::R9)
2314 .Case("v7", ARM::R10)
2315 .Case("v8", ARM::R11)
2316 .Case("sb", ARM::R9)
2317 .Case("sl", ARM::R10)
2318 .Case("fp", ARM::R11)
2322 // Check for aliases registered via .req. Canonicalize to lower case.
2323 // That's more consistent since register names are case insensitive, and
2324 // it's how the original entry was passed in from MC/MCParser/AsmParser.
2325 StringMap<unsigned>::const_iterator Entry = RegisterReqs.find(lowerCase);
2326 // If no match, return failure.
2327 if (Entry == RegisterReqs.end())
2329 Parser.Lex(); // Eat identifier token.
2330 return Entry->getValue();
2333 Parser.Lex(); // Eat identifier token.
2338 // Try to parse a shifter (e.g., "lsl <amt>"). On success, return 0.
2339 // If a recoverable error occurs, return 1. If an irrecoverable error
2340 // occurs, return -1. An irrecoverable error is one where tokens have been
2341 // consumed in the process of trying to parse the shifter (i.e., when it is
2342 // indeed a shifter operand, but malformed).
2343 int ARMAsmParser::tryParseShiftRegister(
2344 SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2345 SMLoc S = Parser.getTok().getLoc();
2346 const AsmToken &Tok = Parser.getTok();
2347 assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
2349 std::string lowerCase = Tok.getString().lower();
2350 ARM_AM::ShiftOpc ShiftTy = StringSwitch<ARM_AM::ShiftOpc>(lowerCase)
2351 .Case("asl", ARM_AM::lsl)
2352 .Case("lsl", ARM_AM::lsl)
2353 .Case("lsr", ARM_AM::lsr)
2354 .Case("asr", ARM_AM::asr)
2355 .Case("ror", ARM_AM::ror)
2356 .Case("rrx", ARM_AM::rrx)
2357 .Default(ARM_AM::no_shift);
2359 if (ShiftTy == ARM_AM::no_shift)
2362 Parser.Lex(); // Eat the operator.
2364 // The source register for the shift has already been added to the
2365 // operand list, so we need to pop it off and combine it into the shifted
2366 // register operand instead.
2367 OwningPtr<ARMOperand> PrevOp((ARMOperand*)Operands.pop_back_val());
2368 if (!PrevOp->isReg())
2369 return Error(PrevOp->getStartLoc(), "shift must be of a register");
2370 int SrcReg = PrevOp->getReg();
2373 if (ShiftTy == ARM_AM::rrx) {
2374 // RRX Doesn't have an explicit shift amount. The encoder expects
2375 // the shift register to be the same as the source register. Seems odd,
2379 // Figure out if this is shifted by a constant or a register (for non-RRX).
2380 if (Parser.getTok().is(AsmToken::Hash) ||
2381 Parser.getTok().is(AsmToken::Dollar)) {
2382 Parser.Lex(); // Eat hash.
2383 SMLoc ImmLoc = Parser.getTok().getLoc();
2384 const MCExpr *ShiftExpr = 0;
2385 if (getParser().ParseExpression(ShiftExpr)) {
2386 Error(ImmLoc, "invalid immediate shift value");
2389 // The expression must be evaluatable as an immediate.
2390 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftExpr);
2392 Error(ImmLoc, "invalid immediate shift value");
2395 // Range check the immediate.
2396 // lsl, ror: 0 <= imm <= 31
2397 // lsr, asr: 0 <= imm <= 32
2398 Imm = CE->getValue();
2400 ((ShiftTy == ARM_AM::lsl || ShiftTy == ARM_AM::ror) && Imm > 31) ||
2401 ((ShiftTy == ARM_AM::lsr || ShiftTy == ARM_AM::asr) && Imm > 32)) {
2402 Error(ImmLoc, "immediate shift value out of range");
2405 // shift by zero is a nop. Always send it through as lsl.
2406 // ('as' compatibility)
2408 ShiftTy = ARM_AM::lsl;
2409 } else if (Parser.getTok().is(AsmToken::Identifier)) {
2410 ShiftReg = tryParseRegister();
2411 SMLoc L = Parser.getTok().getLoc();
2412 if (ShiftReg == -1) {
2413 Error (L, "expected immediate or register in shift operand");
2417 Error (Parser.getTok().getLoc(),
2418 "expected immediate or register in shift operand");
2423 if (ShiftReg && ShiftTy != ARM_AM::rrx)
2424 Operands.push_back(ARMOperand::CreateShiftedRegister(ShiftTy, SrcReg,
2426 S, Parser.getTok().getLoc()));
2428 Operands.push_back(ARMOperand::CreateShiftedImmediate(ShiftTy, SrcReg, Imm,
2429 S, Parser.getTok().getLoc()));
2435 /// Try to parse a register name. The token must be an Identifier when called.
2436 /// If it's a register, an AsmOperand is created. Another AsmOperand is created
2437 /// if there is a "writeback". 'true' if it's not a register.
2439 /// TODO this is likely to change to allow different register types and or to
2440 /// parse for a specific register type.
2442 tryParseRegisterWithWriteBack(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2443 SMLoc S = Parser.getTok().getLoc();
2444 int RegNo = tryParseRegister();
2448 Operands.push_back(ARMOperand::CreateReg(RegNo, S, Parser.getTok().getLoc()));
2450 const AsmToken &ExclaimTok = Parser.getTok();
2451 if (ExclaimTok.is(AsmToken::Exclaim)) {
2452 Operands.push_back(ARMOperand::CreateToken(ExclaimTok.getString(),
2453 ExclaimTok.getLoc()));
2454 Parser.Lex(); // Eat exclaim token
2458 // Also check for an index operand. This is only legal for vector registers,
2459 // but that'll get caught OK in operand matching, so we don't need to
2460 // explicitly filter everything else out here.
2461 if (Parser.getTok().is(AsmToken::LBrac)) {
2462 SMLoc SIdx = Parser.getTok().getLoc();
2463 Parser.Lex(); // Eat left bracket token.
2465 const MCExpr *ImmVal;
2466 if (getParser().ParseExpression(ImmVal))
2467 return MatchOperand_ParseFail;
2468 const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal);
2470 TokError("immediate value expected for vector index");
2471 return MatchOperand_ParseFail;
2474 SMLoc E = Parser.getTok().getLoc();
2475 if (Parser.getTok().isNot(AsmToken::RBrac)) {
2476 Error(E, "']' expected");
2477 return MatchOperand_ParseFail;
2480 Parser.Lex(); // Eat right bracket token.
2482 Operands.push_back(ARMOperand::CreateVectorIndex(MCE->getValue(),
2490 /// MatchCoprocessorOperandName - Try to parse an coprocessor related
2491 /// instruction with a symbolic operand name. Example: "p1", "p7", "c3",
2493 static int MatchCoprocessorOperandName(StringRef Name, char CoprocOp) {
2494 // Use the same layout as the tablegen'erated register name matcher. Ugly,
2496 switch (Name.size()) {
2499 if (Name[0] != CoprocOp)
2516 if (Name[0] != CoprocOp || Name[1] != '1')
2520 case '0': return 10;
2521 case '1': return 11;
2522 case '2': return 12;
2523 case '3': return 13;
2524 case '4': return 14;
2525 case '5': return 15;
2533 /// parseITCondCode - Try to parse a condition code for an IT instruction.
2534 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2535 parseITCondCode(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2536 SMLoc S = Parser.getTok().getLoc();
2537 const AsmToken &Tok = Parser.getTok();
2538 if (!Tok.is(AsmToken::Identifier))
2539 return MatchOperand_NoMatch;
2540 unsigned CC = StringSwitch<unsigned>(Tok.getString())
2541 .Case("eq", ARMCC::EQ)
2542 .Case("ne", ARMCC::NE)
2543 .Case("hs", ARMCC::HS)
2544 .Case("cs", ARMCC::HS)
2545 .Case("lo", ARMCC::LO)
2546 .Case("cc", ARMCC::LO)
2547 .Case("mi", ARMCC::MI)
2548 .Case("pl", ARMCC::PL)
2549 .Case("vs", ARMCC::VS)
2550 .Case("vc", ARMCC::VC)
2551 .Case("hi", ARMCC::HI)
2552 .Case("ls", ARMCC::LS)
2553 .Case("ge", ARMCC::GE)
2554 .Case("lt", ARMCC::LT)
2555 .Case("gt", ARMCC::GT)
2556 .Case("le", ARMCC::LE)
2557 .Case("al", ARMCC::AL)
2560 return MatchOperand_NoMatch;
2561 Parser.Lex(); // Eat the token.
2563 Operands.push_back(ARMOperand::CreateCondCode(ARMCC::CondCodes(CC), S));
2565 return MatchOperand_Success;
2568 /// parseCoprocNumOperand - Try to parse an coprocessor number operand. The
2569 /// token must be an Identifier when called, and if it is a coprocessor
2570 /// number, the token is eaten and the operand is added to the operand list.
2571 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2572 parseCoprocNumOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2573 SMLoc S = Parser.getTok().getLoc();
2574 const AsmToken &Tok = Parser.getTok();
2575 if (Tok.isNot(AsmToken::Identifier))
2576 return MatchOperand_NoMatch;
2578 int Num = MatchCoprocessorOperandName(Tok.getString(), 'p');
2580 return MatchOperand_NoMatch;
2582 Parser.Lex(); // Eat identifier token.
2583 Operands.push_back(ARMOperand::CreateCoprocNum(Num, S));
2584 return MatchOperand_Success;
2587 /// parseCoprocRegOperand - Try to parse an coprocessor register operand. The
2588 /// token must be an Identifier when called, and if it is a coprocessor
2589 /// number, the token is eaten and the operand is added to the operand list.
2590 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2591 parseCoprocRegOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2592 SMLoc S = Parser.getTok().getLoc();
2593 const AsmToken &Tok = Parser.getTok();
2594 if (Tok.isNot(AsmToken::Identifier))
2595 return MatchOperand_NoMatch;
2597 int Reg = MatchCoprocessorOperandName(Tok.getString(), 'c');
2599 return MatchOperand_NoMatch;
2601 Parser.Lex(); // Eat identifier token.
2602 Operands.push_back(ARMOperand::CreateCoprocReg(Reg, S));
2603 return MatchOperand_Success;
2606 /// parseCoprocOptionOperand - Try to parse an coprocessor option operand.
2607 /// coproc_option : '{' imm0_255 '}'
2608 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2609 parseCoprocOptionOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2610 SMLoc S = Parser.getTok().getLoc();
2612 // If this isn't a '{', this isn't a coprocessor immediate operand.
2613 if (Parser.getTok().isNot(AsmToken::LCurly))
2614 return MatchOperand_NoMatch;
2615 Parser.Lex(); // Eat the '{'
2618 SMLoc Loc = Parser.getTok().getLoc();
2619 if (getParser().ParseExpression(Expr)) {
2620 Error(Loc, "illegal expression");
2621 return MatchOperand_ParseFail;
2623 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
2624 if (!CE || CE->getValue() < 0 || CE->getValue() > 255) {
2625 Error(Loc, "coprocessor option must be an immediate in range [0, 255]");
2626 return MatchOperand_ParseFail;
2628 int Val = CE->getValue();
2630 // Check for and consume the closing '}'
2631 if (Parser.getTok().isNot(AsmToken::RCurly))
2632 return MatchOperand_ParseFail;
2633 SMLoc E = Parser.getTok().getLoc();
2634 Parser.Lex(); // Eat the '}'
2636 Operands.push_back(ARMOperand::CreateCoprocOption(Val, S, E));
2637 return MatchOperand_Success;
2640 // For register list parsing, we need to map from raw GPR register numbering
2641 // to the enumeration values. The enumeration values aren't sorted by
2642 // register number due to our using "sp", "lr" and "pc" as canonical names.
2643 static unsigned getNextRegister(unsigned Reg) {
2644 // If this is a GPR, we need to do it manually, otherwise we can rely
2645 // on the sort ordering of the enumeration since the other reg-classes
2647 if (!ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
2650 default: assert(0 && "Invalid GPR number!");
2651 case ARM::R0: return ARM::R1; case ARM::R1: return ARM::R2;
2652 case ARM::R2: return ARM::R3; case ARM::R3: return ARM::R4;
2653 case ARM::R4: return ARM::R5; case ARM::R5: return ARM::R6;
2654 case ARM::R6: return ARM::R7; case ARM::R7: return ARM::R8;
2655 case ARM::R8: return ARM::R9; case ARM::R9: return ARM::R10;
2656 case ARM::R10: return ARM::R11; case ARM::R11: return ARM::R12;
2657 case ARM::R12: return ARM::SP; case ARM::SP: return ARM::LR;
2658 case ARM::LR: return ARM::PC; case ARM::PC: return ARM::R0;
2662 // Return the low-subreg of a given Q register.
2663 static unsigned getDRegFromQReg(unsigned QReg) {
2665 default: llvm_unreachable("expected a Q register!");
2666 case ARM::Q0: return ARM::D0;
2667 case ARM::Q1: return ARM::D2;
2668 case ARM::Q2: return ARM::D4;
2669 case ARM::Q3: return ARM::D6;
2670 case ARM::Q4: return ARM::D8;
2671 case ARM::Q5: return ARM::D10;
2672 case ARM::Q6: return ARM::D12;
2673 case ARM::Q7: return ARM::D14;
2674 case ARM::Q8: return ARM::D16;
2675 case ARM::Q9: return ARM::D18;
2676 case ARM::Q10: return ARM::D20;
2677 case ARM::Q11: return ARM::D22;
2678 case ARM::Q12: return ARM::D24;
2679 case ARM::Q13: return ARM::D26;
2680 case ARM::Q14: return ARM::D28;
2681 case ARM::Q15: return ARM::D30;
2685 /// Parse a register list.
2687 parseRegisterList(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2688 assert(Parser.getTok().is(AsmToken::LCurly) &&
2689 "Token is not a Left Curly Brace");
2690 SMLoc S = Parser.getTok().getLoc();
2691 Parser.Lex(); // Eat '{' token.
2692 SMLoc RegLoc = Parser.getTok().getLoc();
2694 // Check the first register in the list to see what register class
2695 // this is a list of.
2696 int Reg = tryParseRegister();
2698 return Error(RegLoc, "register expected");
2700 // The reglist instructions have at most 16 registers, so reserve
2701 // space for that many.
2702 SmallVector<std::pair<unsigned, SMLoc>, 16> Registers;
2704 // Allow Q regs and just interpret them as the two D sub-registers.
2705 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2706 Reg = getDRegFromQReg(Reg);
2707 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2710 const MCRegisterClass *RC;
2711 if (ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
2712 RC = &ARMMCRegisterClasses[ARM::GPRRegClassID];
2713 else if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg))
2714 RC = &ARMMCRegisterClasses[ARM::DPRRegClassID];
2715 else if (ARMMCRegisterClasses[ARM::SPRRegClassID].contains(Reg))
2716 RC = &ARMMCRegisterClasses[ARM::SPRRegClassID];
2718 return Error(RegLoc, "invalid register in register list");
2720 // Store the register.
2721 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2723 // This starts immediately after the first register token in the list,
2724 // so we can see either a comma or a minus (range separator) as a legal
2726 while (Parser.getTok().is(AsmToken::Comma) ||
2727 Parser.getTok().is(AsmToken::Minus)) {
2728 if (Parser.getTok().is(AsmToken::Minus)) {
2729 Parser.Lex(); // Eat the minus.
2730 SMLoc EndLoc = Parser.getTok().getLoc();
2731 int EndReg = tryParseRegister();
2733 return Error(EndLoc, "register expected");
2734 // Allow Q regs and just interpret them as the two D sub-registers.
2735 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(EndReg))
2736 EndReg = getDRegFromQReg(EndReg) + 1;
2737 // If the register is the same as the start reg, there's nothing
2741 // The register must be in the same register class as the first.
2742 if (!RC->contains(EndReg))
2743 return Error(EndLoc, "invalid register in register list");
2744 // Ranges must go from low to high.
2745 if (getARMRegisterNumbering(Reg) > getARMRegisterNumbering(EndReg))
2746 return Error(EndLoc, "bad range in register list");
2748 // Add all the registers in the range to the register list.
2749 while (Reg != EndReg) {
2750 Reg = getNextRegister(Reg);
2751 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2755 Parser.Lex(); // Eat the comma.
2756 RegLoc = Parser.getTok().getLoc();
2758 const AsmToken RegTok = Parser.getTok();
2759 Reg = tryParseRegister();
2761 return Error(RegLoc, "register expected");
2762 // Allow Q regs and just interpret them as the two D sub-registers.
2763 bool isQReg = false;
2764 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2765 Reg = getDRegFromQReg(Reg);
2768 // The register must be in the same register class as the first.
2769 if (!RC->contains(Reg))
2770 return Error(RegLoc, "invalid register in register list");
2771 // List must be monotonically increasing.
2772 if (getARMRegisterNumbering(Reg) < getARMRegisterNumbering(OldReg))
2773 return Error(RegLoc, "register list not in ascending order");
2774 if (getARMRegisterNumbering(Reg) == getARMRegisterNumbering(OldReg)) {
2775 Warning(RegLoc, "duplicated register (" + RegTok.getString() +
2776 ") in register list");
2779 // VFP register lists must also be contiguous.
2780 // It's OK to use the enumeration values directly here rather, as the
2781 // VFP register classes have the enum sorted properly.
2782 if (RC != &ARMMCRegisterClasses[ARM::GPRRegClassID] &&
2784 return Error(RegLoc, "non-contiguous register range");
2785 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2787 Registers.push_back(std::pair<unsigned, SMLoc>(++Reg, RegLoc));
2790 SMLoc E = Parser.getTok().getLoc();
2791 if (Parser.getTok().isNot(AsmToken::RCurly))
2792 return Error(E, "'}' expected");
2793 Parser.Lex(); // Eat '}' token.
2795 // Push the register list operand.
2796 Operands.push_back(ARMOperand::CreateRegList(Registers, S, E));
2798 // The ARM system instruction variants for LDM/STM have a '^' token here.
2799 if (Parser.getTok().is(AsmToken::Caret)) {
2800 Operands.push_back(ARMOperand::CreateToken("^",Parser.getTok().getLoc()));
2801 Parser.Lex(); // Eat '^' token.
2807 // Helper function to parse the lane index for vector lists.
2808 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2809 parseVectorLane(VectorLaneTy &LaneKind, unsigned &Index) {
2810 Index = 0; // Always return a defined index value.
2811 if (Parser.getTok().is(AsmToken::LBrac)) {
2812 Parser.Lex(); // Eat the '['.
2813 if (Parser.getTok().is(AsmToken::RBrac)) {
2814 // "Dn[]" is the 'all lanes' syntax.
2815 LaneKind = AllLanes;
2816 Parser.Lex(); // Eat the ']'.
2817 return MatchOperand_Success;
2819 const MCExpr *LaneIndex;
2820 SMLoc Loc = Parser.getTok().getLoc();
2821 if (getParser().ParseExpression(LaneIndex)) {
2822 Error(Loc, "illegal expression");
2823 return MatchOperand_ParseFail;
2825 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(LaneIndex);
2827 Error(Loc, "lane index must be empty or an integer");
2828 return MatchOperand_ParseFail;
2830 if (Parser.getTok().isNot(AsmToken::RBrac)) {
2831 Error(Parser.getTok().getLoc(), "']' expected");
2832 return MatchOperand_ParseFail;
2834 Parser.Lex(); // Eat the ']'.
2835 int64_t Val = CE->getValue();
2837 // FIXME: Make this range check context sensitive for .8, .16, .32.
2838 if (Val < 0 || Val > 7) {
2839 Error(Parser.getTok().getLoc(), "lane index out of range");
2840 return MatchOperand_ParseFail;
2843 LaneKind = IndexedLane;
2844 return MatchOperand_Success;
2847 return MatchOperand_Success;
2850 // parse a vector register list
2851 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2852 parseVectorList(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2853 VectorLaneTy LaneKind;
2855 SMLoc S = Parser.getTok().getLoc();
2856 // As an extension (to match gas), support a plain D register or Q register
2857 // (without encosing curly braces) as a single or double entry list,
2859 if (Parser.getTok().is(AsmToken::Identifier)) {
2860 int Reg = tryParseRegister();
2862 return MatchOperand_NoMatch;
2863 SMLoc E = Parser.getTok().getLoc();
2864 if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg)) {
2865 OperandMatchResultTy Res = parseVectorLane(LaneKind, LaneIndex);
2866 if (Res != MatchOperand_Success)
2870 assert(0 && "unexpected lane kind!");
2872 E = Parser.getTok().getLoc();
2873 Operands.push_back(ARMOperand::CreateVectorList(Reg, 1, false, S, E));
2876 E = Parser.getTok().getLoc();
2877 Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 1, false,
2881 Operands.push_back(ARMOperand::CreateVectorListIndexed(Reg, 1,
2886 return MatchOperand_Success;
2888 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2889 Reg = getDRegFromQReg(Reg);
2890 OperandMatchResultTy Res = parseVectorLane(LaneKind, LaneIndex);
2891 if (Res != MatchOperand_Success)
2895 assert(0 && "unexpected lane kind!");
2897 E = Parser.getTok().getLoc();
2898 Operands.push_back(ARMOperand::CreateVectorList(Reg, 2, false, S, E));
2901 E = Parser.getTok().getLoc();
2902 Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 2, false,
2906 Operands.push_back(ARMOperand::CreateVectorListIndexed(Reg, 2,
2911 return MatchOperand_Success;
2913 Error(S, "vector register expected");
2914 return MatchOperand_ParseFail;
2917 if (Parser.getTok().isNot(AsmToken::LCurly))
2918 return MatchOperand_NoMatch;
2920 Parser.Lex(); // Eat '{' token.
2921 SMLoc RegLoc = Parser.getTok().getLoc();
2923 int Reg = tryParseRegister();
2925 Error(RegLoc, "register expected");
2926 return MatchOperand_ParseFail;
2930 unsigned FirstReg = Reg;
2931 // The list is of D registers, but we also allow Q regs and just interpret
2932 // them as the two D sub-registers.
2933 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2934 FirstReg = Reg = getDRegFromQReg(Reg);
2935 Spacing = 1; // double-spacing requires explicit D registers, otherwise
2936 // it's ambiguous with four-register single spaced.
2940 if (parseVectorLane(LaneKind, LaneIndex) != MatchOperand_Success)
2941 return MatchOperand_ParseFail;
2943 while (Parser.getTok().is(AsmToken::Comma) ||
2944 Parser.getTok().is(AsmToken::Minus)) {
2945 if (Parser.getTok().is(AsmToken::Minus)) {
2947 Spacing = 1; // Register range implies a single spaced list.
2948 else if (Spacing == 2) {
2949 Error(Parser.getTok().getLoc(),
2950 "sequential registers in double spaced list");
2951 return MatchOperand_ParseFail;
2953 Parser.Lex(); // Eat the minus.
2954 SMLoc EndLoc = Parser.getTok().getLoc();
2955 int EndReg = tryParseRegister();
2957 Error(EndLoc, "register expected");
2958 return MatchOperand_ParseFail;
2960 // Allow Q regs and just interpret them as the two D sub-registers.
2961 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(EndReg))
2962 EndReg = getDRegFromQReg(EndReg) + 1;
2963 // If the register is the same as the start reg, there's nothing
2967 // The register must be in the same register class as the first.
2968 if (!ARMMCRegisterClasses[ARM::DPRRegClassID].contains(EndReg)) {
2969 Error(EndLoc, "invalid register in register list");
2970 return MatchOperand_ParseFail;
2972 // Ranges must go from low to high.
2974 Error(EndLoc, "bad range in register list");
2975 return MatchOperand_ParseFail;
2977 // Parse the lane specifier if present.
2978 VectorLaneTy NextLaneKind;
2979 unsigned NextLaneIndex;
2980 if (parseVectorLane(NextLaneKind, NextLaneIndex) != MatchOperand_Success)
2981 return MatchOperand_ParseFail;
2982 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
2983 Error(EndLoc, "mismatched lane index in register list");
2984 return MatchOperand_ParseFail;
2986 EndLoc = Parser.getTok().getLoc();
2988 // Add all the registers in the range to the register list.
2989 Count += EndReg - Reg;
2993 Parser.Lex(); // Eat the comma.
2994 RegLoc = Parser.getTok().getLoc();
2996 Reg = tryParseRegister();
2998 Error(RegLoc, "register expected");
2999 return MatchOperand_ParseFail;
3001 // vector register lists must be contiguous.
3002 // It's OK to use the enumeration values directly here rather, as the
3003 // VFP register classes have the enum sorted properly.
3005 // The list is of D registers, but we also allow Q regs and just interpret
3006 // them as the two D sub-registers.
3007 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
3009 Spacing = 1; // Register range implies a single spaced list.
3010 else if (Spacing == 2) {
3012 "invalid register in double-spaced list (must be 'D' register')");
3013 return MatchOperand_ParseFail;
3015 Reg = getDRegFromQReg(Reg);
3016 if (Reg != OldReg + 1) {
3017 Error(RegLoc, "non-contiguous register range");
3018 return MatchOperand_ParseFail;
3022 // Parse the lane specifier if present.
3023 VectorLaneTy NextLaneKind;
3024 unsigned NextLaneIndex;
3025 SMLoc EndLoc = Parser.getTok().getLoc();
3026 if (parseVectorLane(NextLaneKind, NextLaneIndex) != MatchOperand_Success)
3027 return MatchOperand_ParseFail;
3028 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
3029 Error(EndLoc, "mismatched lane index in register list");
3030 return MatchOperand_ParseFail;
3034 // Normal D register.
3035 // Figure out the register spacing (single or double) of the list if
3036 // we don't know it already.
3038 Spacing = 1 + (Reg == OldReg + 2);
3040 // Just check that it's contiguous and keep going.
3041 if (Reg != OldReg + Spacing) {
3042 Error(RegLoc, "non-contiguous register range");
3043 return MatchOperand_ParseFail;
3046 // Parse the lane specifier if present.
3047 VectorLaneTy NextLaneKind;
3048 unsigned NextLaneIndex;
3049 SMLoc EndLoc = Parser.getTok().getLoc();
3050 if (parseVectorLane(NextLaneKind, NextLaneIndex) != MatchOperand_Success)
3051 return MatchOperand_ParseFail;
3052 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
3053 Error(EndLoc, "mismatched lane index in register list");
3054 return MatchOperand_ParseFail;
3058 SMLoc E = Parser.getTok().getLoc();
3059 if (Parser.getTok().isNot(AsmToken::RCurly)) {
3060 Error(E, "'}' expected");
3061 return MatchOperand_ParseFail;
3063 Parser.Lex(); // Eat '}' token.
3067 assert(0 && "unexpected lane kind in register list.");
3069 Operands.push_back(ARMOperand::CreateVectorList(FirstReg, Count,
3070 (Spacing == 2), S, E));
3073 Operands.push_back(ARMOperand::CreateVectorListAllLanes(FirstReg, Count,
3078 Operands.push_back(ARMOperand::CreateVectorListIndexed(FirstReg, Count,
3084 return MatchOperand_Success;
3087 /// parseMemBarrierOptOperand - Try to parse DSB/DMB data barrier options.
3088 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3089 parseMemBarrierOptOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3090 SMLoc S = Parser.getTok().getLoc();
3091 const AsmToken &Tok = Parser.getTok();
3092 assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
3093 StringRef OptStr = Tok.getString();
3095 unsigned Opt = StringSwitch<unsigned>(OptStr.slice(0, OptStr.size()))
3096 .Case("sy", ARM_MB::SY)
3097 .Case("st", ARM_MB::ST)
3098 .Case("sh", ARM_MB::ISH)
3099 .Case("ish", ARM_MB::ISH)
3100 .Case("shst", ARM_MB::ISHST)
3101 .Case("ishst", ARM_MB::ISHST)
3102 .Case("nsh", ARM_MB::NSH)
3103 .Case("un", ARM_MB::NSH)
3104 .Case("nshst", ARM_MB::NSHST)
3105 .Case("unst", ARM_MB::NSHST)
3106 .Case("osh", ARM_MB::OSH)
3107 .Case("oshst", ARM_MB::OSHST)
3111 return MatchOperand_NoMatch;
3113 Parser.Lex(); // Eat identifier token.
3114 Operands.push_back(ARMOperand::CreateMemBarrierOpt((ARM_MB::MemBOpt)Opt, S));
3115 return MatchOperand_Success;
3118 /// parseProcIFlagsOperand - Try to parse iflags from CPS instruction.
3119 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3120 parseProcIFlagsOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3121 SMLoc S = Parser.getTok().getLoc();
3122 const AsmToken &Tok = Parser.getTok();
3123 assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
3124 StringRef IFlagsStr = Tok.getString();
3126 // An iflags string of "none" is interpreted to mean that none of the AIF
3127 // bits are set. Not a terribly useful instruction, but a valid encoding.
3128 unsigned IFlags = 0;
3129 if (IFlagsStr != "none") {
3130 for (int i = 0, e = IFlagsStr.size(); i != e; ++i) {
3131 unsigned Flag = StringSwitch<unsigned>(IFlagsStr.substr(i, 1))
3132 .Case("a", ARM_PROC::A)
3133 .Case("i", ARM_PROC::I)
3134 .Case("f", ARM_PROC::F)
3137 // If some specific iflag is already set, it means that some letter is
3138 // present more than once, this is not acceptable.
3139 if (Flag == ~0U || (IFlags & Flag))
3140 return MatchOperand_NoMatch;
3146 Parser.Lex(); // Eat identifier token.
3147 Operands.push_back(ARMOperand::CreateProcIFlags((ARM_PROC::IFlags)IFlags, S));
3148 return MatchOperand_Success;
3151 /// parseMSRMaskOperand - Try to parse mask flags from MSR instruction.
3152 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3153 parseMSRMaskOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3154 SMLoc S = Parser.getTok().getLoc();
3155 const AsmToken &Tok = Parser.getTok();
3156 assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
3157 StringRef Mask = Tok.getString();
3160 // See ARMv6-M 10.1.1
3161 unsigned FlagsVal = StringSwitch<unsigned>(Mask)
3171 .Case("primask", 16)
3172 .Case("basepri", 17)
3173 .Case("basepri_max", 18)
3174 .Case("faultmask", 19)
3175 .Case("control", 20)
3178 if (FlagsVal == ~0U)
3179 return MatchOperand_NoMatch;
3181 if (!hasV7Ops() && FlagsVal >= 17 && FlagsVal <= 19)
3182 // basepri, basepri_max and faultmask only valid for V7m.
3183 return MatchOperand_NoMatch;
3185 Parser.Lex(); // Eat identifier token.
3186 Operands.push_back(ARMOperand::CreateMSRMask(FlagsVal, S));
3187 return MatchOperand_Success;
3190 // Split spec_reg from flag, example: CPSR_sxf => "CPSR" and "sxf"
3191 size_t Start = 0, Next = Mask.find('_');
3192 StringRef Flags = "";
3193 std::string SpecReg = Mask.slice(Start, Next).lower();
3194 if (Next != StringRef::npos)
3195 Flags = Mask.slice(Next+1, Mask.size());
3197 // FlagsVal contains the complete mask:
3199 // 4: Special Reg (cpsr, apsr => 0; spsr => 1)
3200 unsigned FlagsVal = 0;
3202 if (SpecReg == "apsr") {
3203 FlagsVal = StringSwitch<unsigned>(Flags)
3204 .Case("nzcvq", 0x8) // same as CPSR_f
3205 .Case("g", 0x4) // same as CPSR_s
3206 .Case("nzcvqg", 0xc) // same as CPSR_fs
3209 if (FlagsVal == ~0U) {
3211 return MatchOperand_NoMatch;
3213 FlagsVal = 8; // No flag
3215 } else if (SpecReg == "cpsr" || SpecReg == "spsr") {
3216 if (Flags == "all") // cpsr_all is an alias for cpsr_fc
3218 for (int i = 0, e = Flags.size(); i != e; ++i) {
3219 unsigned Flag = StringSwitch<unsigned>(Flags.substr(i, 1))
3226 // If some specific flag is already set, it means that some letter is
3227 // present more than once, this is not acceptable.
3228 if (FlagsVal == ~0U || (FlagsVal & Flag))
3229 return MatchOperand_NoMatch;
3232 } else // No match for special register.
3233 return MatchOperand_NoMatch;
3235 // Special register without flags is NOT equivalent to "fc" flags.
3236 // NOTE: This is a divergence from gas' behavior. Uncommenting the following
3237 // two lines would enable gas compatibility at the expense of breaking
3243 // Bit 4: Special Reg (cpsr, apsr => 0; spsr => 1)
3244 if (SpecReg == "spsr")
3247 Parser.Lex(); // Eat identifier token.
3248 Operands.push_back(ARMOperand::CreateMSRMask(FlagsVal, S));
3249 return MatchOperand_Success;
3252 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3253 parsePKHImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands, StringRef Op,
3254 int Low, int High) {
3255 const AsmToken &Tok = Parser.getTok();
3256 if (Tok.isNot(AsmToken::Identifier)) {
3257 Error(Parser.getTok().getLoc(), Op + " operand expected.");
3258 return MatchOperand_ParseFail;
3260 StringRef ShiftName = Tok.getString();
3261 std::string LowerOp = Op.lower();
3262 std::string UpperOp = Op.upper();
3263 if (ShiftName != LowerOp && ShiftName != UpperOp) {
3264 Error(Parser.getTok().getLoc(), Op + " operand expected.");
3265 return MatchOperand_ParseFail;
3267 Parser.Lex(); // Eat shift type token.
3269 // There must be a '#' and a shift amount.
3270 if (Parser.getTok().isNot(AsmToken::Hash) &&
3271 Parser.getTok().isNot(AsmToken::Dollar)) {
3272 Error(Parser.getTok().getLoc(), "'#' expected");
3273 return MatchOperand_ParseFail;
3275 Parser.Lex(); // Eat hash token.
3277 const MCExpr *ShiftAmount;
3278 SMLoc Loc = Parser.getTok().getLoc();
3279 if (getParser().ParseExpression(ShiftAmount)) {
3280 Error(Loc, "illegal expression");
3281 return MatchOperand_ParseFail;
3283 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
3285 Error(Loc, "constant expression expected");
3286 return MatchOperand_ParseFail;
3288 int Val = CE->getValue();
3289 if (Val < Low || Val > High) {
3290 Error(Loc, "immediate value out of range");
3291 return MatchOperand_ParseFail;
3294 Operands.push_back(ARMOperand::CreateImm(CE, Loc, Parser.getTok().getLoc()));
3296 return MatchOperand_Success;
3299 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3300 parseSetEndImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3301 const AsmToken &Tok = Parser.getTok();
3302 SMLoc S = Tok.getLoc();
3303 if (Tok.isNot(AsmToken::Identifier)) {
3304 Error(Tok.getLoc(), "'be' or 'le' operand expected");
3305 return MatchOperand_ParseFail;
3307 int Val = StringSwitch<int>(Tok.getString())
3311 Parser.Lex(); // Eat the token.
3314 Error(Tok.getLoc(), "'be' or 'le' operand expected");
3315 return MatchOperand_ParseFail;
3317 Operands.push_back(ARMOperand::CreateImm(MCConstantExpr::Create(Val,
3319 S, Parser.getTok().getLoc()));
3320 return MatchOperand_Success;
3323 /// parseShifterImm - Parse the shifter immediate operand for SSAT/USAT
3324 /// instructions. Legal values are:
3325 /// lsl #n 'n' in [0,31]
3326 /// asr #n 'n' in [1,32]
3327 /// n == 32 encoded as n == 0.
3328 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3329 parseShifterImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3330 const AsmToken &Tok = Parser.getTok();
3331 SMLoc S = Tok.getLoc();
3332 if (Tok.isNot(AsmToken::Identifier)) {
3333 Error(S, "shift operator 'asr' or 'lsl' expected");
3334 return MatchOperand_ParseFail;
3336 StringRef ShiftName = Tok.getString();
3338 if (ShiftName == "lsl" || ShiftName == "LSL")
3340 else if (ShiftName == "asr" || ShiftName == "ASR")
3343 Error(S, "shift operator 'asr' or 'lsl' expected");
3344 return MatchOperand_ParseFail;
3346 Parser.Lex(); // Eat the operator.
3348 // A '#' and a shift amount.
3349 if (Parser.getTok().isNot(AsmToken::Hash) &&
3350 Parser.getTok().isNot(AsmToken::Dollar)) {
3351 Error(Parser.getTok().getLoc(), "'#' expected");
3352 return MatchOperand_ParseFail;
3354 Parser.Lex(); // Eat hash token.
3356 const MCExpr *ShiftAmount;
3357 SMLoc E = Parser.getTok().getLoc();
3358 if (getParser().ParseExpression(ShiftAmount)) {
3359 Error(E, "malformed shift expression");
3360 return MatchOperand_ParseFail;
3362 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
3364 Error(E, "shift amount must be an immediate");
3365 return MatchOperand_ParseFail;
3368 int64_t Val = CE->getValue();
3370 // Shift amount must be in [1,32]
3371 if (Val < 1 || Val > 32) {
3372 Error(E, "'asr' shift amount must be in range [1,32]");
3373 return MatchOperand_ParseFail;
3375 // asr #32 encoded as asr #0, but is not allowed in Thumb2 mode.
3376 if (isThumb() && Val == 32) {
3377 Error(E, "'asr #32' shift amount not allowed in Thumb mode");
3378 return MatchOperand_ParseFail;
3380 if (Val == 32) Val = 0;
3382 // Shift amount must be in [1,32]
3383 if (Val < 0 || Val > 31) {
3384 Error(E, "'lsr' shift amount must be in range [0,31]");
3385 return MatchOperand_ParseFail;
3389 E = Parser.getTok().getLoc();
3390 Operands.push_back(ARMOperand::CreateShifterImm(isASR, Val, S, E));
3392 return MatchOperand_Success;
3395 /// parseRotImm - Parse the shifter immediate operand for SXTB/UXTB family
3396 /// of instructions. Legal values are:
3397 /// ror #n 'n' in {0, 8, 16, 24}
3398 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3399 parseRotImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3400 const AsmToken &Tok = Parser.getTok();
3401 SMLoc S = Tok.getLoc();
3402 if (Tok.isNot(AsmToken::Identifier))
3403 return MatchOperand_NoMatch;
3404 StringRef ShiftName = Tok.getString();
3405 if (ShiftName != "ror" && ShiftName != "ROR")
3406 return MatchOperand_NoMatch;
3407 Parser.Lex(); // Eat the operator.
3409 // A '#' and a rotate amount.
3410 if (Parser.getTok().isNot(AsmToken::Hash) &&
3411 Parser.getTok().isNot(AsmToken::Dollar)) {
3412 Error(Parser.getTok().getLoc(), "'#' expected");
3413 return MatchOperand_ParseFail;
3415 Parser.Lex(); // Eat hash token.
3417 const MCExpr *ShiftAmount;
3418 SMLoc E = Parser.getTok().getLoc();
3419 if (getParser().ParseExpression(ShiftAmount)) {
3420 Error(E, "malformed rotate expression");
3421 return MatchOperand_ParseFail;
3423 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
3425 Error(E, "rotate amount must be an immediate");
3426 return MatchOperand_ParseFail;
3429 int64_t Val = CE->getValue();
3430 // Shift amount must be in {0, 8, 16, 24} (0 is undocumented extension)
3431 // normally, zero is represented in asm by omitting the rotate operand
3433 if (Val != 8 && Val != 16 && Val != 24 && Val != 0) {
3434 Error(E, "'ror' rotate amount must be 8, 16, or 24");
3435 return MatchOperand_ParseFail;
3438 E = Parser.getTok().getLoc();
3439 Operands.push_back(ARMOperand::CreateRotImm(Val, S, E));
3441 return MatchOperand_Success;
3444 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3445 parseBitfield(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3446 SMLoc S = Parser.getTok().getLoc();
3447 // The bitfield descriptor is really two operands, the LSB and the width.
3448 if (Parser.getTok().isNot(AsmToken::Hash) &&
3449 Parser.getTok().isNot(AsmToken::Dollar)) {
3450 Error(Parser.getTok().getLoc(), "'#' expected");
3451 return MatchOperand_ParseFail;
3453 Parser.Lex(); // Eat hash token.
3455 const MCExpr *LSBExpr;
3456 SMLoc E = Parser.getTok().getLoc();
3457 if (getParser().ParseExpression(LSBExpr)) {
3458 Error(E, "malformed immediate expression");
3459 return MatchOperand_ParseFail;
3461 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(LSBExpr);
3463 Error(E, "'lsb' operand must be an immediate");
3464 return MatchOperand_ParseFail;
3467 int64_t LSB = CE->getValue();
3468 // The LSB must be in the range [0,31]
3469 if (LSB < 0 || LSB > 31) {
3470 Error(E, "'lsb' operand must be in the range [0,31]");
3471 return MatchOperand_ParseFail;
3473 E = Parser.getTok().getLoc();
3475 // Expect another immediate operand.
3476 if (Parser.getTok().isNot(AsmToken::Comma)) {
3477 Error(Parser.getTok().getLoc(), "too few operands");
3478 return MatchOperand_ParseFail;
3480 Parser.Lex(); // Eat hash token.
3481 if (Parser.getTok().isNot(AsmToken::Hash) &&
3482 Parser.getTok().isNot(AsmToken::Dollar)) {
3483 Error(Parser.getTok().getLoc(), "'#' expected");
3484 return MatchOperand_ParseFail;
3486 Parser.Lex(); // Eat hash token.
3488 const MCExpr *WidthExpr;
3489 if (getParser().ParseExpression(WidthExpr)) {
3490 Error(E, "malformed immediate expression");
3491 return MatchOperand_ParseFail;
3493 CE = dyn_cast<MCConstantExpr>(WidthExpr);
3495 Error(E, "'width' operand must be an immediate");
3496 return MatchOperand_ParseFail;
3499 int64_t Width = CE->getValue();
3500 // The LSB must be in the range [1,32-lsb]
3501 if (Width < 1 || Width > 32 - LSB) {
3502 Error(E, "'width' operand must be in the range [1,32-lsb]");
3503 return MatchOperand_ParseFail;
3505 E = Parser.getTok().getLoc();
3507 Operands.push_back(ARMOperand::CreateBitfield(LSB, Width, S, E));
3509 return MatchOperand_Success;
3512 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3513 parsePostIdxReg(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3514 // Check for a post-index addressing register operand. Specifically:
3515 // postidx_reg := '+' register {, shift}
3516 // | '-' register {, shift}
3517 // | register {, shift}
3519 // This method must return MatchOperand_NoMatch without consuming any tokens
3520 // in the case where there is no match, as other alternatives take other
3522 AsmToken Tok = Parser.getTok();
3523 SMLoc S = Tok.getLoc();
3524 bool haveEaten = false;
3527 if (Tok.is(AsmToken::Plus)) {
3528 Parser.Lex(); // Eat the '+' token.
3530 } else if (Tok.is(AsmToken::Minus)) {
3531 Parser.Lex(); // Eat the '-' token.
3535 if (Parser.getTok().is(AsmToken::Identifier))
3536 Reg = tryParseRegister();
3539 return MatchOperand_NoMatch;
3540 Error(Parser.getTok().getLoc(), "register expected");
3541 return MatchOperand_ParseFail;
3543 SMLoc E = Parser.getTok().getLoc();
3545 ARM_AM::ShiftOpc ShiftTy = ARM_AM::no_shift;
3546 unsigned ShiftImm = 0;
3547 if (Parser.getTok().is(AsmToken::Comma)) {
3548 Parser.Lex(); // Eat the ','.
3549 if (parseMemRegOffsetShift(ShiftTy, ShiftImm))
3550 return MatchOperand_ParseFail;
3553 Operands.push_back(ARMOperand::CreatePostIdxReg(Reg, isAdd, ShiftTy,
3556 return MatchOperand_Success;
3559 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3560 parseAM3Offset(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3561 // Check for a post-index addressing register operand. Specifically:
3562 // am3offset := '+' register
3569 // This method must return MatchOperand_NoMatch without consuming any tokens
3570 // in the case where there is no match, as other alternatives take other
3572 AsmToken Tok = Parser.getTok();
3573 SMLoc S = Tok.getLoc();
3575 // Do immediates first, as we always parse those if we have a '#'.
3576 if (Parser.getTok().is(AsmToken::Hash) ||
3577 Parser.getTok().is(AsmToken::Dollar)) {
3578 Parser.Lex(); // Eat the '#'.
3579 // Explicitly look for a '-', as we need to encode negative zero
3581 bool isNegative = Parser.getTok().is(AsmToken::Minus);
3582 const MCExpr *Offset;
3583 if (getParser().ParseExpression(Offset))
3584 return MatchOperand_ParseFail;
3585 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Offset);
3587 Error(S, "constant expression expected");
3588 return MatchOperand_ParseFail;
3590 SMLoc E = Tok.getLoc();
3591 // Negative zero is encoded as the flag value INT32_MIN.
3592 int32_t Val = CE->getValue();
3593 if (isNegative && Val == 0)
3597 ARMOperand::CreateImm(MCConstantExpr::Create(Val, getContext()), S, E));
3599 return MatchOperand_Success;
3603 bool haveEaten = false;
3606 if (Tok.is(AsmToken::Plus)) {
3607 Parser.Lex(); // Eat the '+' token.
3609 } else if (Tok.is(AsmToken::Minus)) {
3610 Parser.Lex(); // Eat the '-' token.
3614 if (Parser.getTok().is(AsmToken::Identifier))
3615 Reg = tryParseRegister();
3618 return MatchOperand_NoMatch;
3619 Error(Parser.getTok().getLoc(), "register expected");
3620 return MatchOperand_ParseFail;
3622 SMLoc E = Parser.getTok().getLoc();
3624 Operands.push_back(ARMOperand::CreatePostIdxReg(Reg, isAdd, ARM_AM::no_shift,
3627 return MatchOperand_Success;
3630 /// cvtT2LdrdPre - Convert parsed operands to MCInst.
3631 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3632 /// when they refer multiple MIOperands inside a single one.
3634 cvtT2LdrdPre(MCInst &Inst, unsigned Opcode,
3635 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3637 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3638 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3639 // Create a writeback register dummy placeholder.
3640 Inst.addOperand(MCOperand::CreateReg(0));
3642 ((ARMOperand*)Operands[4])->addMemImm8s4OffsetOperands(Inst, 2);
3644 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3648 /// cvtT2StrdPre - Convert parsed operands to MCInst.
3649 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3650 /// when they refer multiple MIOperands inside a single one.
3652 cvtT2StrdPre(MCInst &Inst, unsigned Opcode,
3653 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3654 // Create a writeback register dummy placeholder.
3655 Inst.addOperand(MCOperand::CreateReg(0));
3657 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3658 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3660 ((ARMOperand*)Operands[4])->addMemImm8s4OffsetOperands(Inst, 2);
3662 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3666 /// cvtLdWriteBackRegT2AddrModeImm8 - Convert parsed operands to MCInst.
3667 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3668 /// when they refer multiple MIOperands inside a single one.
3670 cvtLdWriteBackRegT2AddrModeImm8(MCInst &Inst, unsigned Opcode,
3671 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3672 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3674 // Create a writeback register dummy placeholder.
3675 Inst.addOperand(MCOperand::CreateImm(0));
3677 ((ARMOperand*)Operands[3])->addMemImm8OffsetOperands(Inst, 2);
3678 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3682 /// cvtStWriteBackRegT2AddrModeImm8 - Convert parsed operands to MCInst.
3683 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3684 /// when they refer multiple MIOperands inside a single one.
3686 cvtStWriteBackRegT2AddrModeImm8(MCInst &Inst, unsigned Opcode,
3687 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3688 // Create a writeback register dummy placeholder.
3689 Inst.addOperand(MCOperand::CreateImm(0));
3690 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3691 ((ARMOperand*)Operands[3])->addMemImm8OffsetOperands(Inst, 2);
3692 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3696 /// cvtLdWriteBackRegAddrMode2 - Convert parsed operands to MCInst.
3697 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3698 /// when they refer multiple MIOperands inside a single one.
3700 cvtLdWriteBackRegAddrMode2(MCInst &Inst, unsigned Opcode,
3701 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3702 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3704 // Create a writeback register dummy placeholder.
3705 Inst.addOperand(MCOperand::CreateImm(0));
3707 ((ARMOperand*)Operands[3])->addAddrMode2Operands(Inst, 3);
3708 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3712 /// cvtLdWriteBackRegAddrModeImm12 - Convert parsed operands to MCInst.
3713 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3714 /// when they refer multiple MIOperands inside a single one.
3716 cvtLdWriteBackRegAddrModeImm12(MCInst &Inst, unsigned Opcode,
3717 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3718 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3720 // Create a writeback register dummy placeholder.
3721 Inst.addOperand(MCOperand::CreateImm(0));
3723 ((ARMOperand*)Operands[3])->addMemImm12OffsetOperands(Inst, 2);
3724 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3729 /// cvtStWriteBackRegAddrModeImm12 - Convert parsed operands to MCInst.
3730 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3731 /// when they refer multiple MIOperands inside a single one.
3733 cvtStWriteBackRegAddrModeImm12(MCInst &Inst, unsigned Opcode,
3734 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3735 // Create a writeback register dummy placeholder.
3736 Inst.addOperand(MCOperand::CreateImm(0));
3737 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3738 ((ARMOperand*)Operands[3])->addMemImm12OffsetOperands(Inst, 2);
3739 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3743 /// cvtStWriteBackRegAddrMode2 - Convert parsed operands to MCInst.
3744 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3745 /// when they refer multiple MIOperands inside a single one.
3747 cvtStWriteBackRegAddrMode2(MCInst &Inst, unsigned Opcode,
3748 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3749 // Create a writeback register dummy placeholder.
3750 Inst.addOperand(MCOperand::CreateImm(0));
3751 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3752 ((ARMOperand*)Operands[3])->addAddrMode2Operands(Inst, 3);
3753 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3757 /// cvtStWriteBackRegAddrMode3 - Convert parsed operands to MCInst.
3758 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3759 /// when they refer multiple MIOperands inside a single one.
3761 cvtStWriteBackRegAddrMode3(MCInst &Inst, unsigned Opcode,
3762 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3763 // Create a writeback register dummy placeholder.
3764 Inst.addOperand(MCOperand::CreateImm(0));
3765 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3766 ((ARMOperand*)Operands[3])->addAddrMode3Operands(Inst, 3);
3767 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3771 /// cvtLdExtTWriteBackImm - Convert parsed operands to MCInst.
3772 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3773 /// when they refer multiple MIOperands inside a single one.
3775 cvtLdExtTWriteBackImm(MCInst &Inst, unsigned Opcode,
3776 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3778 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3779 // Create a writeback register dummy placeholder.
3780 Inst.addOperand(MCOperand::CreateImm(0));
3782 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
3784 ((ARMOperand*)Operands[4])->addPostIdxImm8Operands(Inst, 1);
3786 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3790 /// cvtLdExtTWriteBackReg - Convert parsed operands to MCInst.
3791 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3792 /// when they refer multiple MIOperands inside a single one.
3794 cvtLdExtTWriteBackReg(MCInst &Inst, unsigned Opcode,
3795 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3797 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3798 // Create a writeback register dummy placeholder.
3799 Inst.addOperand(MCOperand::CreateImm(0));
3801 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
3803 ((ARMOperand*)Operands[4])->addPostIdxRegOperands(Inst, 2);
3805 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3809 /// cvtStExtTWriteBackImm - Convert parsed operands to MCInst.
3810 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3811 /// when they refer multiple MIOperands inside a single one.
3813 cvtStExtTWriteBackImm(MCInst &Inst, unsigned Opcode,
3814 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3815 // Create a writeback register dummy placeholder.
3816 Inst.addOperand(MCOperand::CreateImm(0));
3818 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3820 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
3822 ((ARMOperand*)Operands[4])->addPostIdxImm8Operands(Inst, 1);
3824 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3828 /// cvtStExtTWriteBackReg - Convert parsed operands to MCInst.
3829 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3830 /// when they refer multiple MIOperands inside a single one.
3832 cvtStExtTWriteBackReg(MCInst &Inst, unsigned Opcode,
3833 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3834 // Create a writeback register dummy placeholder.
3835 Inst.addOperand(MCOperand::CreateImm(0));
3837 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3839 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
3841 ((ARMOperand*)Operands[4])->addPostIdxRegOperands(Inst, 2);
3843 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3847 /// cvtLdrdPre - Convert parsed operands to MCInst.
3848 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3849 /// when they refer multiple MIOperands inside a single one.
3851 cvtLdrdPre(MCInst &Inst, unsigned Opcode,
3852 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3854 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3855 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3856 // Create a writeback register dummy placeholder.
3857 Inst.addOperand(MCOperand::CreateImm(0));
3859 ((ARMOperand*)Operands[4])->addAddrMode3Operands(Inst, 3);
3861 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3865 /// cvtStrdPre - Convert parsed operands to MCInst.
3866 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3867 /// when they refer multiple MIOperands inside a single one.
3869 cvtStrdPre(MCInst &Inst, unsigned Opcode,
3870 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3871 // Create a writeback register dummy placeholder.
3872 Inst.addOperand(MCOperand::CreateImm(0));
3874 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3875 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3877 ((ARMOperand*)Operands[4])->addAddrMode3Operands(Inst, 3);
3879 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3883 /// cvtLdWriteBackRegAddrMode3 - Convert parsed operands to MCInst.
3884 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3885 /// when they refer multiple MIOperands inside a single one.
3887 cvtLdWriteBackRegAddrMode3(MCInst &Inst, unsigned Opcode,
3888 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3889 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3890 // Create a writeback register dummy placeholder.
3891 Inst.addOperand(MCOperand::CreateImm(0));
3892 ((ARMOperand*)Operands[3])->addAddrMode3Operands(Inst, 3);
3893 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3897 /// cvtThumbMultiple- Convert parsed operands to MCInst.
3898 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3899 /// when they refer multiple MIOperands inside a single one.
3901 cvtThumbMultiply(MCInst &Inst, unsigned Opcode,
3902 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3903 // The second source operand must be the same register as the destination
3905 if (Operands.size() == 6 &&
3906 (((ARMOperand*)Operands[3])->getReg() !=
3907 ((ARMOperand*)Operands[5])->getReg()) &&
3908 (((ARMOperand*)Operands[3])->getReg() !=
3909 ((ARMOperand*)Operands[4])->getReg())) {
3910 Error(Operands[3]->getStartLoc(),
3911 "destination register must match source register");
3914 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3915 ((ARMOperand*)Operands[1])->addCCOutOperands(Inst, 1);
3916 // If we have a three-operand form, make sure to set Rn to be the operand
3917 // that isn't the same as Rd.
3919 if (Operands.size() == 6 &&
3920 ((ARMOperand*)Operands[4])->getReg() ==
3921 ((ARMOperand*)Operands[3])->getReg())
3923 ((ARMOperand*)Operands[RegOp])->addRegOperands(Inst, 1);
3924 Inst.addOperand(Inst.getOperand(0));
3925 ((ARMOperand*)Operands[2])->addCondCodeOperands(Inst, 2);
3931 cvtVLDwbFixed(MCInst &Inst, unsigned Opcode,
3932 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3934 ((ARMOperand*)Operands[3])->addVecListOperands(Inst, 1);
3935 // Create a writeback register dummy placeholder.
3936 Inst.addOperand(MCOperand::CreateImm(0));
3938 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
3940 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3945 cvtVLDwbRegister(MCInst &Inst, unsigned Opcode,
3946 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3948 ((ARMOperand*)Operands[3])->addVecListOperands(Inst, 1);
3949 // Create a writeback register dummy placeholder.
3950 Inst.addOperand(MCOperand::CreateImm(0));
3952 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
3954 ((ARMOperand*)Operands[5])->addRegOperands(Inst, 1);
3956 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3961 cvtVSTwbFixed(MCInst &Inst, unsigned Opcode,
3962 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3963 // Create a writeback register dummy placeholder.
3964 Inst.addOperand(MCOperand::CreateImm(0));
3966 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
3968 ((ARMOperand*)Operands[3])->addVecListOperands(Inst, 1);
3970 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3975 cvtVSTwbRegister(MCInst &Inst, unsigned Opcode,
3976 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3977 // Create a writeback register dummy placeholder.
3978 Inst.addOperand(MCOperand::CreateImm(0));
3980 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
3982 ((ARMOperand*)Operands[5])->addRegOperands(Inst, 1);
3984 ((ARMOperand*)Operands[3])->addVecListOperands(Inst, 1);
3986 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3990 /// Parse an ARM memory expression, return false if successful else return true
3991 /// or an error. The first token must be a '[' when called.
3993 parseMemory(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3995 assert(Parser.getTok().is(AsmToken::LBrac) &&
3996 "Token is not a Left Bracket");
3997 S = Parser.getTok().getLoc();
3998 Parser.Lex(); // Eat left bracket token.
4000 const AsmToken &BaseRegTok = Parser.getTok();
4001 int BaseRegNum = tryParseRegister();
4002 if (BaseRegNum == -1)
4003 return Error(BaseRegTok.getLoc(), "register expected");
4005 // The next token must either be a comma or a closing bracket.
4006 const AsmToken &Tok = Parser.getTok();
4007 if (!Tok.is(AsmToken::Comma) && !Tok.is(AsmToken::RBrac))
4008 return Error(Tok.getLoc(), "malformed memory operand");
4010 if (Tok.is(AsmToken::RBrac)) {
4012 Parser.Lex(); // Eat right bracket token.
4014 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, 0, 0, ARM_AM::no_shift,
4015 0, 0, false, S, E));
4017 // If there's a pre-indexing writeback marker, '!', just add it as a token
4018 // operand. It's rather odd, but syntactically valid.
4019 if (Parser.getTok().is(AsmToken::Exclaim)) {
4020 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4021 Parser.Lex(); // Eat the '!'.
4027 assert(Tok.is(AsmToken::Comma) && "Lost comma in memory operand?!");
4028 Parser.Lex(); // Eat the comma.
4030 // If we have a ':', it's an alignment specifier.
4031 if (Parser.getTok().is(AsmToken::Colon)) {
4032 Parser.Lex(); // Eat the ':'.
4033 E = Parser.getTok().getLoc();
4036 if (getParser().ParseExpression(Expr))
4039 // The expression has to be a constant. Memory references with relocations
4040 // don't come through here, as they use the <label> forms of the relevant
4042 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
4044 return Error (E, "constant expression expected");
4047 switch (CE->getValue()) {
4050 "alignment specifier must be 16, 32, 64, 128, or 256 bits");
4051 case 16: Align = 2; break;
4052 case 32: Align = 4; break;
4053 case 64: Align = 8; break;
4054 case 128: Align = 16; break;
4055 case 256: Align = 32; break;
4058 // Now we should have the closing ']'
4059 E = Parser.getTok().getLoc();
4060 if (Parser.getTok().isNot(AsmToken::RBrac))
4061 return Error(E, "']' expected");
4062 Parser.Lex(); // Eat right bracket token.
4064 // Don't worry about range checking the value here. That's handled by
4065 // the is*() predicates.
4066 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, 0, 0,
4067 ARM_AM::no_shift, 0, Align,
4070 // If there's a pre-indexing writeback marker, '!', just add it as a token
4072 if (Parser.getTok().is(AsmToken::Exclaim)) {
4073 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4074 Parser.Lex(); // Eat the '!'.
4080 // If we have a '#', it's an immediate offset, else assume it's a register
4081 // offset. Be friendly and also accept a plain integer (without a leading
4082 // hash) for gas compatibility.
4083 if (Parser.getTok().is(AsmToken::Hash) ||
4084 Parser.getTok().is(AsmToken::Dollar) ||
4085 Parser.getTok().is(AsmToken::Integer)) {
4086 if (Parser.getTok().isNot(AsmToken::Integer))
4087 Parser.Lex(); // Eat the '#'.
4088 E = Parser.getTok().getLoc();
4090 bool isNegative = getParser().getTok().is(AsmToken::Minus);
4091 const MCExpr *Offset;
4092 if (getParser().ParseExpression(Offset))
4095 // The expression has to be a constant. Memory references with relocations
4096 // don't come through here, as they use the <label> forms of the relevant
4098 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Offset);
4100 return Error (E, "constant expression expected");
4102 // If the constant was #-0, represent it as INT32_MIN.
4103 int32_t Val = CE->getValue();
4104 if (isNegative && Val == 0)
4105 CE = MCConstantExpr::Create(INT32_MIN, getContext());
4107 // Now we should have the closing ']'
4108 E = Parser.getTok().getLoc();
4109 if (Parser.getTok().isNot(AsmToken::RBrac))
4110 return Error(E, "']' expected");
4111 Parser.Lex(); // Eat right bracket token.
4113 // Don't worry about range checking the value here. That's handled by
4114 // the is*() predicates.
4115 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, CE, 0,
4116 ARM_AM::no_shift, 0, 0,
4119 // If there's a pre-indexing writeback marker, '!', just add it as a token
4121 if (Parser.getTok().is(AsmToken::Exclaim)) {
4122 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4123 Parser.Lex(); // Eat the '!'.
4129 // The register offset is optionally preceded by a '+' or '-'
4130 bool isNegative = false;
4131 if (Parser.getTok().is(AsmToken::Minus)) {
4133 Parser.Lex(); // Eat the '-'.
4134 } else if (Parser.getTok().is(AsmToken::Plus)) {
4136 Parser.Lex(); // Eat the '+'.
4139 E = Parser.getTok().getLoc();
4140 int OffsetRegNum = tryParseRegister();
4141 if (OffsetRegNum == -1)
4142 return Error(E, "register expected");
4144 // If there's a shift operator, handle it.
4145 ARM_AM::ShiftOpc ShiftType = ARM_AM::no_shift;
4146 unsigned ShiftImm = 0;
4147 if (Parser.getTok().is(AsmToken::Comma)) {
4148 Parser.Lex(); // Eat the ','.
4149 if (parseMemRegOffsetShift(ShiftType, ShiftImm))
4153 // Now we should have the closing ']'
4154 E = Parser.getTok().getLoc();
4155 if (Parser.getTok().isNot(AsmToken::RBrac))
4156 return Error(E, "']' expected");
4157 Parser.Lex(); // Eat right bracket token.
4159 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, 0, OffsetRegNum,
4160 ShiftType, ShiftImm, 0, isNegative,
4163 // If there's a pre-indexing writeback marker, '!', just add it as a token
4165 if (Parser.getTok().is(AsmToken::Exclaim)) {
4166 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4167 Parser.Lex(); // Eat the '!'.
4173 /// parseMemRegOffsetShift - one of these two:
4174 /// ( lsl | lsr | asr | ror ) , # shift_amount
4176 /// return true if it parses a shift otherwise it returns false.
4177 bool ARMAsmParser::parseMemRegOffsetShift(ARM_AM::ShiftOpc &St,
4179 SMLoc Loc = Parser.getTok().getLoc();
4180 const AsmToken &Tok = Parser.getTok();
4181 if (Tok.isNot(AsmToken::Identifier))
4183 StringRef ShiftName = Tok.getString();
4184 if (ShiftName == "lsl" || ShiftName == "LSL" ||
4185 ShiftName == "asl" || ShiftName == "ASL")
4187 else if (ShiftName == "lsr" || ShiftName == "LSR")
4189 else if (ShiftName == "asr" || ShiftName == "ASR")
4191 else if (ShiftName == "ror" || ShiftName == "ROR")
4193 else if (ShiftName == "rrx" || ShiftName == "RRX")
4196 return Error(Loc, "illegal shift operator");
4197 Parser.Lex(); // Eat shift type token.
4199 // rrx stands alone.
4201 if (St != ARM_AM::rrx) {
4202 Loc = Parser.getTok().getLoc();
4203 // A '#' and a shift amount.
4204 const AsmToken &HashTok = Parser.getTok();
4205 if (HashTok.isNot(AsmToken::Hash) &&
4206 HashTok.isNot(AsmToken::Dollar))
4207 return Error(HashTok.getLoc(), "'#' expected");
4208 Parser.Lex(); // Eat hash token.
4211 if (getParser().ParseExpression(Expr))
4213 // Range check the immediate.
4214 // lsl, ror: 0 <= imm <= 31
4215 // lsr, asr: 0 <= imm <= 32
4216 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
4218 return Error(Loc, "shift amount must be an immediate");
4219 int64_t Imm = CE->getValue();
4221 ((St == ARM_AM::lsl || St == ARM_AM::ror) && Imm > 31) ||
4222 ((St == ARM_AM::lsr || St == ARM_AM::asr) && Imm > 32))
4223 return Error(Loc, "immediate shift value out of range");
4230 /// parseFPImm - A floating point immediate expression operand.
4231 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
4232 parseFPImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4233 SMLoc S = Parser.getTok().getLoc();
4235 if (Parser.getTok().isNot(AsmToken::Hash) &&
4236 Parser.getTok().isNot(AsmToken::Dollar))
4237 return MatchOperand_NoMatch;
4239 // Disambiguate the VMOV forms that can accept an FP immediate.
4240 // vmov.f32 <sreg>, #imm
4241 // vmov.f64 <dreg>, #imm
4242 // vmov.f32 <dreg>, #imm @ vector f32x2
4243 // vmov.f32 <qreg>, #imm @ vector f32x4
4245 // There are also the NEON VMOV instructions which expect an
4246 // integer constant. Make sure we don't try to parse an FPImm
4248 // vmov.i{8|16|32|64} <dreg|qreg>, #imm
4249 ARMOperand *TyOp = static_cast<ARMOperand*>(Operands[2]);
4250 if (!TyOp->isToken() || (TyOp->getToken() != ".f32" &&
4251 TyOp->getToken() != ".f64"))
4252 return MatchOperand_NoMatch;
4254 Parser.Lex(); // Eat the '#'.
4256 // Handle negation, as that still comes through as a separate token.
4257 bool isNegative = false;
4258 if (Parser.getTok().is(AsmToken::Minus)) {
4262 const AsmToken &Tok = Parser.getTok();
4263 if (Tok.is(AsmToken::Real)) {
4264 APFloat RealVal(APFloat::IEEEdouble, Tok.getString());
4265 uint64_t IntVal = RealVal.bitcastToAPInt().getZExtValue();
4266 // If we had a '-' in front, toggle the sign bit.
4267 IntVal ^= (uint64_t)isNegative << 63;
4268 int Val = ARM_AM::getFP64Imm(APInt(64, IntVal));
4269 Parser.Lex(); // Eat the token.
4271 TokError("floating point value out of range");
4272 return MatchOperand_ParseFail;
4274 Operands.push_back(ARMOperand::CreateFPImm(Val, S, getContext()));
4275 return MatchOperand_Success;
4277 if (Tok.is(AsmToken::Integer)) {
4278 int64_t Val = Tok.getIntVal();
4279 Parser.Lex(); // Eat the token.
4280 if (Val > 255 || Val < 0) {
4281 TokError("encoded floating point value out of range");
4282 return MatchOperand_ParseFail;
4284 Operands.push_back(ARMOperand::CreateFPImm(Val, S, getContext()));
4285 return MatchOperand_Success;
4288 TokError("invalid floating point immediate");
4289 return MatchOperand_ParseFail;
4291 /// Parse a arm instruction operand. For now this parses the operand regardless
4292 /// of the mnemonic.
4293 bool ARMAsmParser::parseOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands,
4294 StringRef Mnemonic) {
4297 // Check if the current operand has a custom associated parser, if so, try to
4298 // custom parse the operand, or fallback to the general approach.
4299 OperandMatchResultTy ResTy = MatchOperandParserImpl(Operands, Mnemonic);
4300 if (ResTy == MatchOperand_Success)
4302 // If there wasn't a custom match, try the generic matcher below. Otherwise,
4303 // there was a match, but an error occurred, in which case, just return that
4304 // the operand parsing failed.
4305 if (ResTy == MatchOperand_ParseFail)
4308 switch (getLexer().getKind()) {
4310 Error(Parser.getTok().getLoc(), "unexpected token in operand");
4312 case AsmToken::Identifier: {
4313 if (!tryParseRegisterWithWriteBack(Operands))
4315 int Res = tryParseShiftRegister(Operands);
4316 if (Res == 0) // success
4318 else if (Res == -1) // irrecoverable error
4320 // If this is VMRS, check for the apsr_nzcv operand.
4321 if (Mnemonic == "vmrs" && Parser.getTok().getString() == "apsr_nzcv") {
4322 S = Parser.getTok().getLoc();
4324 Operands.push_back(ARMOperand::CreateToken("apsr_nzcv", S));
4328 // Fall though for the Identifier case that is not a register or a
4331 case AsmToken::LParen: // parenthesized expressions like (_strcmp-4)
4332 case AsmToken::Integer: // things like 1f and 2b as a branch targets
4333 case AsmToken::String: // quoted label names.
4334 case AsmToken::Dot: { // . as a branch target
4335 // This was not a register so parse other operands that start with an
4336 // identifier (like labels) as expressions and create them as immediates.
4337 const MCExpr *IdVal;
4338 S = Parser.getTok().getLoc();
4339 if (getParser().ParseExpression(IdVal))
4341 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4342 Operands.push_back(ARMOperand::CreateImm(IdVal, S, E));
4345 case AsmToken::LBrac:
4346 return parseMemory(Operands);
4347 case AsmToken::LCurly:
4348 return parseRegisterList(Operands);
4349 case AsmToken::Dollar:
4350 case AsmToken::Hash: {
4351 // #42 -> immediate.
4352 // TODO: ":lower16:" and ":upper16:" modifiers after # before immediate
4353 S = Parser.getTok().getLoc();
4355 bool isNegative = Parser.getTok().is(AsmToken::Minus);
4356 const MCExpr *ImmVal;
4357 if (getParser().ParseExpression(ImmVal))
4359 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ImmVal);
4361 int32_t Val = CE->getValue();
4362 if (isNegative && Val == 0)
4363 ImmVal = MCConstantExpr::Create(INT32_MIN, getContext());
4365 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4366 Operands.push_back(ARMOperand::CreateImm(ImmVal, S, E));
4369 case AsmToken::Colon: {
4370 // ":lower16:" and ":upper16:" expression prefixes
4371 // FIXME: Check it's an expression prefix,
4372 // e.g. (FOO - :lower16:BAR) isn't legal.
4373 ARMMCExpr::VariantKind RefKind;
4374 if (parsePrefix(RefKind))
4377 const MCExpr *SubExprVal;
4378 if (getParser().ParseExpression(SubExprVal))
4381 const MCExpr *ExprVal = ARMMCExpr::Create(RefKind, SubExprVal,
4383 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4384 Operands.push_back(ARMOperand::CreateImm(ExprVal, S, E));
4390 // parsePrefix - Parse ARM 16-bit relocations expression prefix, i.e.
4391 // :lower16: and :upper16:.
4392 bool ARMAsmParser::parsePrefix(ARMMCExpr::VariantKind &RefKind) {
4393 RefKind = ARMMCExpr::VK_ARM_None;
4395 // :lower16: and :upper16: modifiers
4396 assert(getLexer().is(AsmToken::Colon) && "expected a :");
4397 Parser.Lex(); // Eat ':'
4399 if (getLexer().isNot(AsmToken::Identifier)) {
4400 Error(Parser.getTok().getLoc(), "expected prefix identifier in operand");
4404 StringRef IDVal = Parser.getTok().getIdentifier();
4405 if (IDVal == "lower16") {
4406 RefKind = ARMMCExpr::VK_ARM_LO16;
4407 } else if (IDVal == "upper16") {
4408 RefKind = ARMMCExpr::VK_ARM_HI16;
4410 Error(Parser.getTok().getLoc(), "unexpected prefix in operand");
4415 if (getLexer().isNot(AsmToken::Colon)) {
4416 Error(Parser.getTok().getLoc(), "unexpected token after prefix");
4419 Parser.Lex(); // Eat the last ':'
4423 /// \brief Given a mnemonic, split out possible predication code and carry
4424 /// setting letters to form a canonical mnemonic and flags.
4426 // FIXME: Would be nice to autogen this.
4427 // FIXME: This is a bit of a maze of special cases.
4428 StringRef ARMAsmParser::splitMnemonic(StringRef Mnemonic,
4429 unsigned &PredicationCode,
4431 unsigned &ProcessorIMod,
4432 StringRef &ITMask) {
4433 PredicationCode = ARMCC::AL;
4434 CarrySetting = false;
4437 // Ignore some mnemonics we know aren't predicated forms.
4439 // FIXME: Would be nice to autogen this.
4440 if ((Mnemonic == "movs" && isThumb()) ||
4441 Mnemonic == "teq" || Mnemonic == "vceq" || Mnemonic == "svc" ||
4442 Mnemonic == "mls" || Mnemonic == "smmls" || Mnemonic == "vcls" ||
4443 Mnemonic == "vmls" || Mnemonic == "vnmls" || Mnemonic == "vacge" ||
4444 Mnemonic == "vcge" || Mnemonic == "vclt" || Mnemonic == "vacgt" ||
4445 Mnemonic == "vcgt" || Mnemonic == "vcle" || Mnemonic == "smlal" ||
4446 Mnemonic == "umaal" || Mnemonic == "umlal" || Mnemonic == "vabal" ||
4447 Mnemonic == "vmlal" || Mnemonic == "vpadal" || Mnemonic == "vqdmlal" ||
4448 Mnemonic == "fmuls")
4451 // First, split out any predication code. Ignore mnemonics we know aren't
4452 // predicated but do have a carry-set and so weren't caught above.
4453 if (Mnemonic != "adcs" && Mnemonic != "bics" && Mnemonic != "movs" &&
4454 Mnemonic != "muls" && Mnemonic != "smlals" && Mnemonic != "smulls" &&
4455 Mnemonic != "umlals" && Mnemonic != "umulls" && Mnemonic != "lsls" &&
4456 Mnemonic != "sbcs" && Mnemonic != "rscs") {
4457 unsigned CC = StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2))
4458 .Case("eq", ARMCC::EQ)
4459 .Case("ne", ARMCC::NE)
4460 .Case("hs", ARMCC::HS)
4461 .Case("cs", ARMCC::HS)
4462 .Case("lo", ARMCC::LO)
4463 .Case("cc", ARMCC::LO)
4464 .Case("mi", ARMCC::MI)
4465 .Case("pl", ARMCC::PL)
4466 .Case("vs", ARMCC::VS)
4467 .Case("vc", ARMCC::VC)
4468 .Case("hi", ARMCC::HI)
4469 .Case("ls", ARMCC::LS)
4470 .Case("ge", ARMCC::GE)
4471 .Case("lt", ARMCC::LT)
4472 .Case("gt", ARMCC::GT)
4473 .Case("le", ARMCC::LE)
4474 .Case("al", ARMCC::AL)
4477 Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 2);
4478 PredicationCode = CC;
4482 // Next, determine if we have a carry setting bit. We explicitly ignore all
4483 // the instructions we know end in 's'.
4484 if (Mnemonic.endswith("s") &&
4485 !(Mnemonic == "cps" || Mnemonic == "mls" ||
4486 Mnemonic == "mrs" || Mnemonic == "smmls" || Mnemonic == "vabs" ||
4487 Mnemonic == "vcls" || Mnemonic == "vmls" || Mnemonic == "vmrs" ||
4488 Mnemonic == "vnmls" || Mnemonic == "vqabs" || Mnemonic == "vrecps" ||
4489 Mnemonic == "vrsqrts" || Mnemonic == "srs" || Mnemonic == "flds" ||
4490 Mnemonic == "fmrs" || Mnemonic == "fsqrts" || Mnemonic == "fsubs" ||
4491 Mnemonic == "fsts" || Mnemonic == "fcpys" || Mnemonic == "fdivs" ||
4492 Mnemonic == "fmuls" || Mnemonic == "fcmps" ||
4493 (Mnemonic == "movs" && isThumb()))) {
4494 Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 1);
4495 CarrySetting = true;
4498 // The "cps" instruction can have a interrupt mode operand which is glued into
4499 // the mnemonic. Check if this is the case, split it and parse the imod op
4500 if (Mnemonic.startswith("cps")) {
4501 // Split out any imod code.
4503 StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2, 2))
4504 .Case("ie", ARM_PROC::IE)
4505 .Case("id", ARM_PROC::ID)
4508 Mnemonic = Mnemonic.slice(0, Mnemonic.size()-2);
4509 ProcessorIMod = IMod;
4513 // The "it" instruction has the condition mask on the end of the mnemonic.
4514 if (Mnemonic.startswith("it")) {
4515 ITMask = Mnemonic.slice(2, Mnemonic.size());
4516 Mnemonic = Mnemonic.slice(0, 2);
4522 /// \brief Given a canonical mnemonic, determine if the instruction ever allows
4523 /// inclusion of carry set or predication code operands.
4525 // FIXME: It would be nice to autogen this.
4527 getMnemonicAcceptInfo(StringRef Mnemonic, bool &CanAcceptCarrySet,
4528 bool &CanAcceptPredicationCode) {
4529 if (Mnemonic == "and" || Mnemonic == "lsl" || Mnemonic == "lsr" ||
4530 Mnemonic == "rrx" || Mnemonic == "ror" || Mnemonic == "sub" ||
4531 Mnemonic == "add" || Mnemonic == "adc" ||
4532 Mnemonic == "mul" || Mnemonic == "bic" || Mnemonic == "asr" ||
4533 Mnemonic == "orr" || Mnemonic == "mvn" ||
4534 Mnemonic == "rsb" || Mnemonic == "rsc" || Mnemonic == "orn" ||
4535 Mnemonic == "sbc" || Mnemonic == "eor" || Mnemonic == "neg" ||
4536 (!isThumb() && (Mnemonic == "smull" || Mnemonic == "mov" ||
4537 Mnemonic == "mla" || Mnemonic == "smlal" ||
4538 Mnemonic == "umlal" || Mnemonic == "umull"))) {
4539 CanAcceptCarrySet = true;
4541 CanAcceptCarrySet = false;
4543 if (Mnemonic == "cbnz" || Mnemonic == "setend" || Mnemonic == "dmb" ||
4544 Mnemonic == "cps" || Mnemonic == "mcr2" || Mnemonic == "it" ||
4545 Mnemonic == "mcrr2" || Mnemonic == "cbz" || Mnemonic == "cdp2" ||
4546 Mnemonic == "trap" || Mnemonic == "mrc2" || Mnemonic == "mrrc2" ||
4547 Mnemonic == "dsb" || Mnemonic == "isb" || Mnemonic == "setend" ||
4548 (Mnemonic == "clrex" && !isThumb()) ||
4549 (Mnemonic == "nop" && isThumbOne()) ||
4550 ((Mnemonic == "pld" || Mnemonic == "pli" || Mnemonic == "pldw" ||
4551 Mnemonic == "ldc2" || Mnemonic == "ldc2l" ||
4552 Mnemonic == "stc2" || Mnemonic == "stc2l") && !isThumb()) ||
4553 ((Mnemonic.startswith("rfe") || Mnemonic.startswith("srs")) &&
4555 Mnemonic.startswith("cps") || (Mnemonic == "movs" && isThumbOne())) {
4556 CanAcceptPredicationCode = false;
4558 CanAcceptPredicationCode = true;
4561 if (Mnemonic == "bkpt" || Mnemonic == "mcr" || Mnemonic == "mcrr" ||
4562 Mnemonic == "mrc" || Mnemonic == "mrrc" || Mnemonic == "cdp")
4563 CanAcceptPredicationCode = false;
4567 bool ARMAsmParser::shouldOmitCCOutOperand(StringRef Mnemonic,
4568 SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4569 // FIXME: This is all horribly hacky. We really need a better way to deal
4570 // with optional operands like this in the matcher table.
4572 // The 'mov' mnemonic is special. One variant has a cc_out operand, while
4573 // another does not. Specifically, the MOVW instruction does not. So we
4574 // special case it here and remove the defaulted (non-setting) cc_out
4575 // operand if that's the instruction we're trying to match.
4577 // We do this as post-processing of the explicit operands rather than just
4578 // conditionally adding the cc_out in the first place because we need
4579 // to check the type of the parsed immediate operand.
4580 if (Mnemonic == "mov" && Operands.size() > 4 && !isThumb() &&
4581 !static_cast<ARMOperand*>(Operands[4])->isARMSOImm() &&
4582 static_cast<ARMOperand*>(Operands[4])->isImm0_65535Expr() &&
4583 static_cast<ARMOperand*>(Operands[1])->getReg() == 0)
4586 // Register-register 'add' for thumb does not have a cc_out operand
4587 // when there are only two register operands.
4588 if (isThumb() && Mnemonic == "add" && Operands.size() == 5 &&
4589 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4590 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4591 static_cast<ARMOperand*>(Operands[1])->getReg() == 0)
4593 // Register-register 'add' for thumb does not have a cc_out operand
4594 // when it's an ADD Rdm, SP, {Rdm|#imm0_255} instruction. We do
4595 // have to check the immediate range here since Thumb2 has a variant
4596 // that can handle a different range and has a cc_out operand.
4597 if (((isThumb() && Mnemonic == "add") ||
4598 (isThumbTwo() && Mnemonic == "sub")) &&
4599 Operands.size() == 6 &&
4600 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4601 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4602 static_cast<ARMOperand*>(Operands[4])->getReg() == ARM::SP &&
4603 static_cast<ARMOperand*>(Operands[1])->getReg() == 0 &&
4604 (static_cast<ARMOperand*>(Operands[5])->isReg() ||
4605 static_cast<ARMOperand*>(Operands[5])->isImm0_1020s4()))
4607 // For Thumb2, add/sub immediate does not have a cc_out operand for the
4608 // imm0_4095 variant. That's the least-preferred variant when
4609 // selecting via the generic "add" mnemonic, so to know that we
4610 // should remove the cc_out operand, we have to explicitly check that
4611 // it's not one of the other variants. Ugh.
4612 if (isThumbTwo() && (Mnemonic == "add" || Mnemonic == "sub") &&
4613 Operands.size() == 6 &&
4614 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4615 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4616 static_cast<ARMOperand*>(Operands[5])->isImm()) {
4617 // Nest conditions rather than one big 'if' statement for readability.
4619 // If either register is a high reg, it's either one of the SP
4620 // variants (handled above) or a 32-bit encoding, so we just
4621 // check against T3.
4622 if ((!isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) ||
4623 !isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg())) &&
4624 static_cast<ARMOperand*>(Operands[5])->isT2SOImm())
4626 // If both registers are low, we're in an IT block, and the immediate is
4627 // in range, we should use encoding T1 instead, which has a cc_out.
4629 isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) &&
4630 isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()) &&
4631 static_cast<ARMOperand*>(Operands[5])->isImm0_7())
4634 // Otherwise, we use encoding T4, which does not have a cc_out
4639 // The thumb2 multiply instruction doesn't have a CCOut register, so
4640 // if we have a "mul" mnemonic in Thumb mode, check if we'll be able to
4641 // use the 16-bit encoding or not.
4642 if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 6 &&
4643 static_cast<ARMOperand*>(Operands[1])->getReg() == 0 &&
4644 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4645 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4646 static_cast<ARMOperand*>(Operands[5])->isReg() &&
4647 // If the registers aren't low regs, the destination reg isn't the
4648 // same as one of the source regs, or the cc_out operand is zero
4649 // outside of an IT block, we have to use the 32-bit encoding, so
4650 // remove the cc_out operand.
4651 (!isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) ||
4652 !isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()) ||
4653 !isARMLowRegister(static_cast<ARMOperand*>(Operands[5])->getReg()) ||
4655 (static_cast<ARMOperand*>(Operands[3])->getReg() !=
4656 static_cast<ARMOperand*>(Operands[5])->getReg() &&
4657 static_cast<ARMOperand*>(Operands[3])->getReg() !=
4658 static_cast<ARMOperand*>(Operands[4])->getReg())))
4661 // Also check the 'mul' syntax variant that doesn't specify an explicit
4662 // destination register.
4663 if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 5 &&
4664 static_cast<ARMOperand*>(Operands[1])->getReg() == 0 &&
4665 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4666 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4667 // If the registers aren't low regs or the cc_out operand is zero
4668 // outside of an IT block, we have to use the 32-bit encoding, so
4669 // remove the cc_out operand.
4670 (!isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) ||
4671 !isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()) ||
4677 // Register-register 'add/sub' for thumb does not have a cc_out operand
4678 // when it's an ADD/SUB SP, #imm. Be lenient on count since there's also
4679 // the "add/sub SP, SP, #imm" version. If the follow-up operands aren't
4680 // right, this will result in better diagnostics (which operand is off)
4682 if (isThumb() && (Mnemonic == "add" || Mnemonic == "sub") &&
4683 (Operands.size() == 5 || Operands.size() == 6) &&
4684 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4685 static_cast<ARMOperand*>(Operands[3])->getReg() == ARM::SP &&
4686 static_cast<ARMOperand*>(Operands[1])->getReg() == 0)
4692 static bool isDataTypeToken(StringRef Tok) {
4693 return Tok == ".8" || Tok == ".16" || Tok == ".32" || Tok == ".64" ||
4694 Tok == ".i8" || Tok == ".i16" || Tok == ".i32" || Tok == ".i64" ||
4695 Tok == ".u8" || Tok == ".u16" || Tok == ".u32" || Tok == ".u64" ||
4696 Tok == ".s8" || Tok == ".s16" || Tok == ".s32" || Tok == ".s64" ||
4697 Tok == ".p8" || Tok == ".p16" || Tok == ".f32" || Tok == ".f64" ||
4698 Tok == ".f" || Tok == ".d";
4701 // FIXME: This bit should probably be handled via an explicit match class
4702 // in the .td files that matches the suffix instead of having it be
4703 // a literal string token the way it is now.
4704 static bool doesIgnoreDataTypeSuffix(StringRef Mnemonic, StringRef DT) {
4705 return Mnemonic.startswith("vldm") || Mnemonic.startswith("vstm");
4708 static void applyMnemonicAliases(StringRef &Mnemonic, unsigned Features);
4709 /// Parse an arm instruction mnemonic followed by its operands.
4710 bool ARMAsmParser::ParseInstruction(StringRef Name, SMLoc NameLoc,
4711 SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4712 // Apply mnemonic aliases before doing anything else, as the destination
4713 // mnemnonic may include suffices and we want to handle them normally.
4714 // The generic tblgen'erated code does this later, at the start of
4715 // MatchInstructionImpl(), but that's too late for aliases that include
4716 // any sort of suffix.
4717 unsigned AvailableFeatures = getAvailableFeatures();
4718 applyMnemonicAliases(Name, AvailableFeatures);
4720 // First check for the ARM-specific .req directive.
4721 if (Parser.getTok().is(AsmToken::Identifier) &&
4722 Parser.getTok().getIdentifier() == ".req") {
4723 parseDirectiveReq(Name, NameLoc);
4724 // We always return 'error' for this, as we're done with this
4725 // statement and don't need to match the 'instruction."
4729 // Create the leading tokens for the mnemonic, split by '.' characters.
4730 size_t Start = 0, Next = Name.find('.');
4731 StringRef Mnemonic = Name.slice(Start, Next);
4733 // Split out the predication code and carry setting flag from the mnemonic.
4734 unsigned PredicationCode;
4735 unsigned ProcessorIMod;
4738 Mnemonic = splitMnemonic(Mnemonic, PredicationCode, CarrySetting,
4739 ProcessorIMod, ITMask);
4741 // In Thumb1, only the branch (B) instruction can be predicated.
4742 if (isThumbOne() && PredicationCode != ARMCC::AL && Mnemonic != "b") {
4743 Parser.EatToEndOfStatement();
4744 return Error(NameLoc, "conditional execution not supported in Thumb1");
4747 Operands.push_back(ARMOperand::CreateToken(Mnemonic, NameLoc));
4749 // Handle the IT instruction ITMask. Convert it to a bitmask. This
4750 // is the mask as it will be for the IT encoding if the conditional
4751 // encoding has a '1' as it's bit0 (i.e. 't' ==> '1'). In the case
4752 // where the conditional bit0 is zero, the instruction post-processing
4753 // will adjust the mask accordingly.
4754 if (Mnemonic == "it") {
4755 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + 2);
4756 if (ITMask.size() > 3) {
4757 Parser.EatToEndOfStatement();
4758 return Error(Loc, "too many conditions on IT instruction");
4761 for (unsigned i = ITMask.size(); i != 0; --i) {
4762 char pos = ITMask[i - 1];
4763 if (pos != 't' && pos != 'e') {
4764 Parser.EatToEndOfStatement();
4765 return Error(Loc, "illegal IT block condition mask '" + ITMask + "'");
4768 if (ITMask[i - 1] == 't')
4771 Operands.push_back(ARMOperand::CreateITMask(Mask, Loc));
4774 // FIXME: This is all a pretty gross hack. We should automatically handle
4775 // optional operands like this via tblgen.
4777 // Next, add the CCOut and ConditionCode operands, if needed.
4779 // For mnemonics which can ever incorporate a carry setting bit or predication
4780 // code, our matching model involves us always generating CCOut and
4781 // ConditionCode operands to match the mnemonic "as written" and then we let
4782 // the matcher deal with finding the right instruction or generating an
4783 // appropriate error.
4784 bool CanAcceptCarrySet, CanAcceptPredicationCode;
4785 getMnemonicAcceptInfo(Mnemonic, CanAcceptCarrySet, CanAcceptPredicationCode);
4787 // If we had a carry-set on an instruction that can't do that, issue an
4789 if (!CanAcceptCarrySet && CarrySetting) {
4790 Parser.EatToEndOfStatement();
4791 return Error(NameLoc, "instruction '" + Mnemonic +
4792 "' can not set flags, but 's' suffix specified");
4794 // If we had a predication code on an instruction that can't do that, issue an
4796 if (!CanAcceptPredicationCode && PredicationCode != ARMCC::AL) {
4797 Parser.EatToEndOfStatement();
4798 return Error(NameLoc, "instruction '" + Mnemonic +
4799 "' is not predicable, but condition code specified");
4802 // Add the carry setting operand, if necessary.
4803 if (CanAcceptCarrySet) {
4804 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size());
4805 Operands.push_back(ARMOperand::CreateCCOut(CarrySetting ? ARM::CPSR : 0,
4809 // Add the predication code operand, if necessary.
4810 if (CanAcceptPredicationCode) {
4811 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size() +
4813 Operands.push_back(ARMOperand::CreateCondCode(
4814 ARMCC::CondCodes(PredicationCode), Loc));
4817 // Add the processor imod operand, if necessary.
4818 if (ProcessorIMod) {
4819 Operands.push_back(ARMOperand::CreateImm(
4820 MCConstantExpr::Create(ProcessorIMod, getContext()),
4824 // Add the remaining tokens in the mnemonic.
4825 while (Next != StringRef::npos) {
4827 Next = Name.find('.', Start + 1);
4828 StringRef ExtraToken = Name.slice(Start, Next);
4830 // Some NEON instructions have an optional datatype suffix that is
4831 // completely ignored. Check for that.
4832 if (isDataTypeToken(ExtraToken) &&
4833 doesIgnoreDataTypeSuffix(Mnemonic, ExtraToken))
4836 if (ExtraToken != ".n") {
4837 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Start);
4838 Operands.push_back(ARMOperand::CreateToken(ExtraToken, Loc));
4842 // Read the remaining operands.
4843 if (getLexer().isNot(AsmToken::EndOfStatement)) {
4844 // Read the first operand.
4845 if (parseOperand(Operands, Mnemonic)) {
4846 Parser.EatToEndOfStatement();
4850 while (getLexer().is(AsmToken::Comma)) {
4851 Parser.Lex(); // Eat the comma.
4853 // Parse and remember the operand.
4854 if (parseOperand(Operands, Mnemonic)) {
4855 Parser.EatToEndOfStatement();
4861 if (getLexer().isNot(AsmToken::EndOfStatement)) {
4862 SMLoc Loc = getLexer().getLoc();
4863 Parser.EatToEndOfStatement();
4864 return Error(Loc, "unexpected token in argument list");
4867 Parser.Lex(); // Consume the EndOfStatement
4869 // Some instructions, mostly Thumb, have forms for the same mnemonic that
4870 // do and don't have a cc_out optional-def operand. With some spot-checks
4871 // of the operand list, we can figure out which variant we're trying to
4872 // parse and adjust accordingly before actually matching. We shouldn't ever
4873 // try to remove a cc_out operand that was explicitly set on the the
4874 // mnemonic, of course (CarrySetting == true). Reason number #317 the
4875 // table driven matcher doesn't fit well with the ARM instruction set.
4876 if (!CarrySetting && shouldOmitCCOutOperand(Mnemonic, Operands)) {
4877 ARMOperand *Op = static_cast<ARMOperand*>(Operands[1]);
4878 Operands.erase(Operands.begin() + 1);
4882 // ARM mode 'blx' need special handling, as the register operand version
4883 // is predicable, but the label operand version is not. So, we can't rely
4884 // on the Mnemonic based checking to correctly figure out when to put
4885 // a k_CondCode operand in the list. If we're trying to match the label
4886 // version, remove the k_CondCode operand here.
4887 if (!isThumb() && Mnemonic == "blx" && Operands.size() == 3 &&
4888 static_cast<ARMOperand*>(Operands[2])->isImm()) {
4889 ARMOperand *Op = static_cast<ARMOperand*>(Operands[1]);
4890 Operands.erase(Operands.begin() + 1);
4894 // The vector-compare-to-zero instructions have a literal token "#0" at
4895 // the end that comes to here as an immediate operand. Convert it to a
4896 // token to play nicely with the matcher.
4897 if ((Mnemonic == "vceq" || Mnemonic == "vcge" || Mnemonic == "vcgt" ||
4898 Mnemonic == "vcle" || Mnemonic == "vclt") && Operands.size() == 6 &&
4899 static_cast<ARMOperand*>(Operands[5])->isImm()) {
4900 ARMOperand *Op = static_cast<ARMOperand*>(Operands[5]);
4901 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op->getImm());
4902 if (CE && CE->getValue() == 0) {
4903 Operands.erase(Operands.begin() + 5);
4904 Operands.push_back(ARMOperand::CreateToken("#0", Op->getStartLoc()));
4908 // VCMP{E} does the same thing, but with a different operand count.
4909 if ((Mnemonic == "vcmp" || Mnemonic == "vcmpe") && Operands.size() == 5 &&
4910 static_cast<ARMOperand*>(Operands[4])->isImm()) {
4911 ARMOperand *Op = static_cast<ARMOperand*>(Operands[4]);
4912 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op->getImm());
4913 if (CE && CE->getValue() == 0) {
4914 Operands.erase(Operands.begin() + 4);
4915 Operands.push_back(ARMOperand::CreateToken("#0", Op->getStartLoc()));
4919 // Similarly, the Thumb1 "RSB" instruction has a literal "#0" on the
4920 // end. Convert it to a token here. Take care not to convert those
4921 // that should hit the Thumb2 encoding.
4922 if (Mnemonic == "rsb" && isThumb() && Operands.size() == 6 &&
4923 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4924 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4925 static_cast<ARMOperand*>(Operands[5])->isImm()) {
4926 ARMOperand *Op = static_cast<ARMOperand*>(Operands[5]);
4927 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op->getImm());
4928 if (CE && CE->getValue() == 0 &&
4930 // The cc_out operand matches the IT block.
4931 ((inITBlock() != CarrySetting) &&
4932 // Neither register operand is a high register.
4933 (isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) &&
4934 isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()))))){
4935 Operands.erase(Operands.begin() + 5);
4936 Operands.push_back(ARMOperand::CreateToken("#0", Op->getStartLoc()));
4944 // Validate context-sensitive operand constraints.
4946 // return 'true' if register list contains non-low GPR registers,
4947 // 'false' otherwise. If Reg is in the register list or is HiReg, set
4948 // 'containsReg' to true.
4949 static bool checkLowRegisterList(MCInst Inst, unsigned OpNo, unsigned Reg,
4950 unsigned HiReg, bool &containsReg) {
4951 containsReg = false;
4952 for (unsigned i = OpNo; i < Inst.getNumOperands(); ++i) {
4953 unsigned OpReg = Inst.getOperand(i).getReg();
4956 // Anything other than a low register isn't legal here.
4957 if (!isARMLowRegister(OpReg) && (!HiReg || OpReg != HiReg))
4963 // Check if the specified regisgter is in the register list of the inst,
4964 // starting at the indicated operand number.
4965 static bool listContainsReg(MCInst &Inst, unsigned OpNo, unsigned Reg) {
4966 for (unsigned i = OpNo; i < Inst.getNumOperands(); ++i) {
4967 unsigned OpReg = Inst.getOperand(i).getReg();
4974 // FIXME: We would really prefer to have MCInstrInfo (the wrapper around
4975 // the ARMInsts array) instead. Getting that here requires awkward
4976 // API changes, though. Better way?
4978 extern const MCInstrDesc ARMInsts[];
4980 static const MCInstrDesc &getInstDesc(unsigned Opcode) {
4981 return ARMInsts[Opcode];
4984 // FIXME: We would really like to be able to tablegen'erate this.
4986 validateInstruction(MCInst &Inst,
4987 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4988 const MCInstrDesc &MCID = getInstDesc(Inst.getOpcode());
4989 SMLoc Loc = Operands[0]->getStartLoc();
4990 // Check the IT block state first.
4991 // NOTE: In Thumb mode, the BKPT instruction has the interesting property of
4992 // being allowed in IT blocks, but not being predicable. It just always
4994 if (inITBlock() && Inst.getOpcode() != ARM::tBKPT) {
4996 if (ITState.FirstCond)
4997 ITState.FirstCond = false;
4999 bit = (ITState.Mask >> (5 - ITState.CurPosition)) & 1;
5000 // The instruction must be predicable.
5001 if (!MCID.isPredicable())
5002 return Error(Loc, "instructions in IT block must be predicable");
5003 unsigned Cond = Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm();
5004 unsigned ITCond = bit ? ITState.Cond :
5005 ARMCC::getOppositeCondition(ITState.Cond);
5006 if (Cond != ITCond) {
5007 // Find the condition code Operand to get its SMLoc information.
5009 for (unsigned i = 1; i < Operands.size(); ++i)
5010 if (static_cast<ARMOperand*>(Operands[i])->isCondCode())
5011 CondLoc = Operands[i]->getStartLoc();
5012 return Error(CondLoc, "incorrect condition in IT block; got '" +
5013 StringRef(ARMCondCodeToString(ARMCC::CondCodes(Cond))) +
5014 "', but expected '" +
5015 ARMCondCodeToString(ARMCC::CondCodes(ITCond)) + "'");
5017 // Check for non-'al' condition codes outside of the IT block.
5018 } else if (isThumbTwo() && MCID.isPredicable() &&
5019 Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm() !=
5020 ARMCC::AL && Inst.getOpcode() != ARM::tB &&
5021 Inst.getOpcode() != ARM::t2B)
5022 return Error(Loc, "predicated instructions must be in IT block");
5024 switch (Inst.getOpcode()) {
5027 case ARM::LDRD_POST:
5029 // Rt2 must be Rt + 1.
5030 unsigned Rt = getARMRegisterNumbering(Inst.getOperand(0).getReg());
5031 unsigned Rt2 = getARMRegisterNumbering(Inst.getOperand(1).getReg());
5033 return Error(Operands[3]->getStartLoc(),
5034 "destination operands must be sequential");
5038 // Rt2 must be Rt + 1.
5039 unsigned Rt = getARMRegisterNumbering(Inst.getOperand(0).getReg());
5040 unsigned Rt2 = getARMRegisterNumbering(Inst.getOperand(1).getReg());
5042 return Error(Operands[3]->getStartLoc(),
5043 "source operands must be sequential");
5047 case ARM::STRD_POST:
5049 // Rt2 must be Rt + 1.
5050 unsigned Rt = getARMRegisterNumbering(Inst.getOperand(1).getReg());
5051 unsigned Rt2 = getARMRegisterNumbering(Inst.getOperand(2).getReg());
5053 return Error(Operands[3]->getStartLoc(),
5054 "source operands must be sequential");
5059 // width must be in range [1, 32-lsb]
5060 unsigned lsb = Inst.getOperand(2).getImm();
5061 unsigned widthm1 = Inst.getOperand(3).getImm();
5062 if (widthm1 >= 32 - lsb)
5063 return Error(Operands[5]->getStartLoc(),
5064 "bitfield width must be in range [1,32-lsb]");
5068 // If we're parsing Thumb2, the .w variant is available and handles
5069 // most cases that are normally illegal for a Thumb1 LDM
5070 // instruction. We'll make the transformation in processInstruction()
5073 // Thumb LDM instructions are writeback iff the base register is not
5074 // in the register list.
5075 unsigned Rn = Inst.getOperand(0).getReg();
5076 bool hasWritebackToken =
5077 (static_cast<ARMOperand*>(Operands[3])->isToken() &&
5078 static_cast<ARMOperand*>(Operands[3])->getToken() == "!");
5079 bool listContainsBase;
5080 if (checkLowRegisterList(Inst, 3, Rn, 0, listContainsBase) && !isThumbTwo())
5081 return Error(Operands[3 + hasWritebackToken]->getStartLoc(),
5082 "registers must be in range r0-r7");
5083 // If we should have writeback, then there should be a '!' token.
5084 if (!listContainsBase && !hasWritebackToken && !isThumbTwo())
5085 return Error(Operands[2]->getStartLoc(),
5086 "writeback operator '!' expected");
5087 // If we should not have writeback, there must not be a '!'. This is
5088 // true even for the 32-bit wide encodings.
5089 if (listContainsBase && hasWritebackToken)
5090 return Error(Operands[3]->getStartLoc(),
5091 "writeback operator '!' not allowed when base register "
5092 "in register list");
5096 case ARM::t2LDMIA_UPD: {
5097 if (listContainsReg(Inst, 3, Inst.getOperand(0).getReg()))
5098 return Error(Operands[4]->getStartLoc(),
5099 "writeback operator '!' not allowed when base register "
5100 "in register list");
5103 // Like for ldm/stm, push and pop have hi-reg handling version in Thumb2,
5104 // so only issue a diagnostic for thumb1. The instructions will be
5105 // switched to the t2 encodings in processInstruction() if necessary.
5107 bool listContainsBase;
5108 if (checkLowRegisterList(Inst, 2, 0, ARM::PC, listContainsBase) &&
5110 return Error(Operands[2]->getStartLoc(),
5111 "registers must be in range r0-r7 or pc");
5115 bool listContainsBase;
5116 if (checkLowRegisterList(Inst, 2, 0, ARM::LR, listContainsBase) &&
5118 return Error(Operands[2]->getStartLoc(),
5119 "registers must be in range r0-r7 or lr");
5122 case ARM::tSTMIA_UPD: {
5123 bool listContainsBase;
5124 if (checkLowRegisterList(Inst, 4, 0, 0, listContainsBase) && !isThumbTwo())
5125 return Error(Operands[4]->getStartLoc(),
5126 "registers must be in range r0-r7");
5134 static unsigned getRealVSTLNOpcode(unsigned Opc, unsigned &Spacing) {
5136 default: assert(0 && "unexpected opcode!");
5138 case ARM::VST1LNdWB_fixed_Asm_8: case ARM::VST1LNdWB_fixed_Asm_P8:
5139 case ARM::VST1LNdWB_fixed_Asm_I8: case ARM::VST1LNdWB_fixed_Asm_S8:
5140 case ARM::VST1LNdWB_fixed_Asm_U8:
5142 return ARM::VST1LNd8_UPD;
5143 case ARM::VST1LNdWB_fixed_Asm_16: case ARM::VST1LNdWB_fixed_Asm_P16:
5144 case ARM::VST1LNdWB_fixed_Asm_I16: case ARM::VST1LNdWB_fixed_Asm_S16:
5145 case ARM::VST1LNdWB_fixed_Asm_U16:
5147 return ARM::VST1LNd16_UPD;
5148 case ARM::VST1LNdWB_fixed_Asm_32: case ARM::VST1LNdWB_fixed_Asm_F:
5149 case ARM::VST1LNdWB_fixed_Asm_F32: case ARM::VST1LNdWB_fixed_Asm_I32:
5150 case ARM::VST1LNdWB_fixed_Asm_S32: case ARM::VST1LNdWB_fixed_Asm_U32:
5152 return ARM::VST1LNd32_UPD;
5153 case ARM::VST1LNdWB_register_Asm_8: case ARM::VST1LNdWB_register_Asm_P8:
5154 case ARM::VST1LNdWB_register_Asm_I8: case ARM::VST1LNdWB_register_Asm_S8:
5155 case ARM::VST1LNdWB_register_Asm_U8:
5157 return ARM::VST1LNd8_UPD;
5158 case ARM::VST1LNdWB_register_Asm_16: case ARM::VST1LNdWB_register_Asm_P16:
5159 case ARM::VST1LNdWB_register_Asm_I16: case ARM::VST1LNdWB_register_Asm_S16:
5160 case ARM::VST1LNdWB_register_Asm_U16:
5162 return ARM::VST1LNd16_UPD;
5163 case ARM::VST1LNdWB_register_Asm_32: case ARM::VST1LNdWB_register_Asm_F:
5164 case ARM::VST1LNdWB_register_Asm_F32: case ARM::VST1LNdWB_register_Asm_I32:
5165 case ARM::VST1LNdWB_register_Asm_S32: case ARM::VST1LNdWB_register_Asm_U32:
5167 return ARM::VST1LNd32_UPD;
5168 case ARM::VST1LNdAsm_8: case ARM::VST1LNdAsm_P8:
5169 case ARM::VST1LNdAsm_I8: case ARM::VST1LNdAsm_S8:
5170 case ARM::VST1LNdAsm_U8:
5172 return ARM::VST1LNd8;
5173 case ARM::VST1LNdAsm_16: case ARM::VST1LNdAsm_P16:
5174 case ARM::VST1LNdAsm_I16: case ARM::VST1LNdAsm_S16:
5175 case ARM::VST1LNdAsm_U16:
5177 return ARM::VST1LNd16;
5178 case ARM::VST1LNdAsm_32: case ARM::VST1LNdAsm_F:
5179 case ARM::VST1LNdAsm_F32: case ARM::VST1LNdAsm_I32:
5180 case ARM::VST1LNdAsm_S32: case ARM::VST1LNdAsm_U32:
5182 return ARM::VST1LNd32;
5185 case ARM::VST2LNdWB_fixed_Asm_8: case ARM::VST2LNdWB_fixed_Asm_P8:
5186 case ARM::VST2LNdWB_fixed_Asm_I8: case ARM::VST2LNdWB_fixed_Asm_S8:
5187 case ARM::VST2LNdWB_fixed_Asm_U8:
5189 return ARM::VST2LNd8_UPD;
5190 case ARM::VST2LNdWB_fixed_Asm_16: case ARM::VST2LNdWB_fixed_Asm_P16:
5191 case ARM::VST2LNdWB_fixed_Asm_I16: case ARM::VST2LNdWB_fixed_Asm_S16:
5192 case ARM::VST2LNdWB_fixed_Asm_U16:
5194 return ARM::VST2LNd16_UPD;
5195 case ARM::VST2LNdWB_fixed_Asm_32: case ARM::VST2LNdWB_fixed_Asm_F:
5196 case ARM::VST2LNdWB_fixed_Asm_F32: case ARM::VST2LNdWB_fixed_Asm_I32:
5197 case ARM::VST2LNdWB_fixed_Asm_S32: case ARM::VST2LNdWB_fixed_Asm_U32:
5199 return ARM::VST2LNd32_UPD;
5200 case ARM::VST2LNqWB_fixed_Asm_16: case ARM::VST2LNqWB_fixed_Asm_P16:
5201 case ARM::VST2LNqWB_fixed_Asm_I16: case ARM::VST2LNqWB_fixed_Asm_S16:
5202 case ARM::VST2LNqWB_fixed_Asm_U16:
5204 return ARM::VST2LNq16_UPD;
5205 case ARM::VST2LNqWB_fixed_Asm_32: case ARM::VST2LNqWB_fixed_Asm_F:
5206 case ARM::VST2LNqWB_fixed_Asm_F32: case ARM::VST2LNqWB_fixed_Asm_I32:
5207 case ARM::VST2LNqWB_fixed_Asm_S32: case ARM::VST2LNqWB_fixed_Asm_U32:
5209 return ARM::VST2LNq32_UPD;
5211 case ARM::VST2LNdWB_register_Asm_8: case ARM::VST2LNdWB_register_Asm_P8:
5212 case ARM::VST2LNdWB_register_Asm_I8: case ARM::VST2LNdWB_register_Asm_S8:
5213 case ARM::VST2LNdWB_register_Asm_U8:
5215 return ARM::VST2LNd8_UPD;
5216 case ARM::VST2LNdWB_register_Asm_16: case ARM::VST2LNdWB_register_Asm_P16:
5217 case ARM::VST2LNdWB_register_Asm_I16: case ARM::VST2LNdWB_register_Asm_S16:
5218 case ARM::VST2LNdWB_register_Asm_U16:
5220 return ARM::VST2LNd16_UPD;
5221 case ARM::VST2LNdWB_register_Asm_32: case ARM::VST2LNdWB_register_Asm_F:
5222 case ARM::VST2LNdWB_register_Asm_F32: case ARM::VST2LNdWB_register_Asm_I32:
5223 case ARM::VST2LNdWB_register_Asm_S32: case ARM::VST2LNdWB_register_Asm_U32:
5225 return ARM::VST2LNd32_UPD;
5226 case ARM::VST2LNqWB_register_Asm_16: case ARM::VST2LNqWB_register_Asm_P16:
5227 case ARM::VST2LNqWB_register_Asm_I16: case ARM::VST2LNqWB_register_Asm_S16:
5228 case ARM::VST2LNqWB_register_Asm_U16:
5230 return ARM::VST2LNq16_UPD;
5231 case ARM::VST2LNqWB_register_Asm_32: case ARM::VST2LNqWB_register_Asm_F:
5232 case ARM::VST2LNqWB_register_Asm_F32: case ARM::VST2LNqWB_register_Asm_I32:
5233 case ARM::VST2LNqWB_register_Asm_S32: case ARM::VST2LNqWB_register_Asm_U32:
5235 return ARM::VST2LNq32_UPD;
5237 case ARM::VST2LNdAsm_8: case ARM::VST2LNdAsm_P8:
5238 case ARM::VST2LNdAsm_I8: case ARM::VST2LNdAsm_S8:
5239 case ARM::VST2LNdAsm_U8:
5241 return ARM::VST2LNd8;
5242 case ARM::VST2LNdAsm_16: case ARM::VST2LNdAsm_P16:
5243 case ARM::VST2LNdAsm_I16: case ARM::VST2LNdAsm_S16:
5244 case ARM::VST2LNdAsm_U16:
5246 return ARM::VST2LNd16;
5247 case ARM::VST2LNdAsm_32: case ARM::VST2LNdAsm_F:
5248 case ARM::VST2LNdAsm_F32: case ARM::VST2LNdAsm_I32:
5249 case ARM::VST2LNdAsm_S32: case ARM::VST2LNdAsm_U32:
5251 return ARM::VST2LNd32;
5252 case ARM::VST2LNqAsm_16: case ARM::VST2LNqAsm_P16:
5253 case ARM::VST2LNqAsm_I16: case ARM::VST2LNqAsm_S16:
5254 case ARM::VST2LNqAsm_U16:
5256 return ARM::VST2LNq16;
5257 case ARM::VST2LNqAsm_32: case ARM::VST2LNqAsm_F:
5258 case ARM::VST2LNqAsm_F32: case ARM::VST2LNqAsm_I32:
5259 case ARM::VST2LNqAsm_S32: case ARM::VST2LNqAsm_U32:
5261 return ARM::VST2LNq32;
5265 static unsigned getRealVLDLNOpcode(unsigned Opc, unsigned &Spacing) {
5267 default: assert(0 && "unexpected opcode!");
5269 case ARM::VLD1LNdWB_fixed_Asm_8: case ARM::VLD1LNdWB_fixed_Asm_P8:
5270 case ARM::VLD1LNdWB_fixed_Asm_I8: case ARM::VLD1LNdWB_fixed_Asm_S8:
5271 case ARM::VLD1LNdWB_fixed_Asm_U8:
5273 return ARM::VLD1LNd8_UPD;
5274 case ARM::VLD1LNdWB_fixed_Asm_16: case ARM::VLD1LNdWB_fixed_Asm_P16:
5275 case ARM::VLD1LNdWB_fixed_Asm_I16: case ARM::VLD1LNdWB_fixed_Asm_S16:
5276 case ARM::VLD1LNdWB_fixed_Asm_U16:
5278 return ARM::VLD1LNd16_UPD;
5279 case ARM::VLD1LNdWB_fixed_Asm_32: case ARM::VLD1LNdWB_fixed_Asm_F:
5280 case ARM::VLD1LNdWB_fixed_Asm_F32: case ARM::VLD1LNdWB_fixed_Asm_I32:
5281 case ARM::VLD1LNdWB_fixed_Asm_S32: case ARM::VLD1LNdWB_fixed_Asm_U32:
5283 return ARM::VLD1LNd32_UPD;
5284 case ARM::VLD1LNdWB_register_Asm_8: case ARM::VLD1LNdWB_register_Asm_P8:
5285 case ARM::VLD1LNdWB_register_Asm_I8: case ARM::VLD1LNdWB_register_Asm_S8:
5286 case ARM::VLD1LNdWB_register_Asm_U8:
5288 return ARM::VLD1LNd8_UPD;
5289 case ARM::VLD1LNdWB_register_Asm_16: case ARM::VLD1LNdWB_register_Asm_P16:
5290 case ARM::VLD1LNdWB_register_Asm_I16: case ARM::VLD1LNdWB_register_Asm_S16:
5291 case ARM::VLD1LNdWB_register_Asm_U16:
5293 return ARM::VLD1LNd16_UPD;
5294 case ARM::VLD1LNdWB_register_Asm_32: case ARM::VLD1LNdWB_register_Asm_F:
5295 case ARM::VLD1LNdWB_register_Asm_F32: case ARM::VLD1LNdWB_register_Asm_I32:
5296 case ARM::VLD1LNdWB_register_Asm_S32: case ARM::VLD1LNdWB_register_Asm_U32:
5298 return ARM::VLD1LNd32_UPD;
5299 case ARM::VLD1LNdAsm_8: case ARM::VLD1LNdAsm_P8:
5300 case ARM::VLD1LNdAsm_I8: case ARM::VLD1LNdAsm_S8:
5301 case ARM::VLD1LNdAsm_U8:
5303 return ARM::VLD1LNd8;
5304 case ARM::VLD1LNdAsm_16: case ARM::VLD1LNdAsm_P16:
5305 case ARM::VLD1LNdAsm_I16: case ARM::VLD1LNdAsm_S16:
5306 case ARM::VLD1LNdAsm_U16:
5308 return ARM::VLD1LNd16;
5309 case ARM::VLD1LNdAsm_32: case ARM::VLD1LNdAsm_F:
5310 case ARM::VLD1LNdAsm_F32: case ARM::VLD1LNdAsm_I32:
5311 case ARM::VLD1LNdAsm_S32: case ARM::VLD1LNdAsm_U32:
5313 return ARM::VLD1LNd32;
5316 case ARM::VLD2LNdWB_fixed_Asm_8: case ARM::VLD2LNdWB_fixed_Asm_P8:
5317 case ARM::VLD2LNdWB_fixed_Asm_I8: case ARM::VLD2LNdWB_fixed_Asm_S8:
5318 case ARM::VLD2LNdWB_fixed_Asm_U8:
5320 return ARM::VLD2LNd8_UPD;
5321 case ARM::VLD2LNdWB_fixed_Asm_16: case ARM::VLD2LNdWB_fixed_Asm_P16:
5322 case ARM::VLD2LNdWB_fixed_Asm_I16: case ARM::VLD2LNdWB_fixed_Asm_S16:
5323 case ARM::VLD2LNdWB_fixed_Asm_U16:
5325 return ARM::VLD2LNd16_UPD;
5326 case ARM::VLD2LNdWB_fixed_Asm_32: case ARM::VLD2LNdWB_fixed_Asm_F:
5327 case ARM::VLD2LNdWB_fixed_Asm_F32: case ARM::VLD2LNdWB_fixed_Asm_I32:
5328 case ARM::VLD2LNdWB_fixed_Asm_S32: case ARM::VLD2LNdWB_fixed_Asm_U32:
5330 return ARM::VLD2LNd32_UPD;
5331 case ARM::VLD2LNqWB_fixed_Asm_16: case ARM::VLD2LNqWB_fixed_Asm_P16:
5332 case ARM::VLD2LNqWB_fixed_Asm_I16: case ARM::VLD2LNqWB_fixed_Asm_S16:
5333 case ARM::VLD2LNqWB_fixed_Asm_U16:
5335 return ARM::VLD2LNq16_UPD;
5336 case ARM::VLD2LNqWB_fixed_Asm_32: case ARM::VLD2LNqWB_fixed_Asm_F:
5337 case ARM::VLD2LNqWB_fixed_Asm_F32: case ARM::VLD2LNqWB_fixed_Asm_I32:
5338 case ARM::VLD2LNqWB_fixed_Asm_S32: case ARM::VLD2LNqWB_fixed_Asm_U32:
5340 return ARM::VLD2LNq32_UPD;
5341 case ARM::VLD2LNdWB_register_Asm_8: case ARM::VLD2LNdWB_register_Asm_P8:
5342 case ARM::VLD2LNdWB_register_Asm_I8: case ARM::VLD2LNdWB_register_Asm_S8:
5343 case ARM::VLD2LNdWB_register_Asm_U8:
5345 return ARM::VLD2LNd8_UPD;
5346 case ARM::VLD2LNdWB_register_Asm_16: case ARM::VLD2LNdWB_register_Asm_P16:
5347 case ARM::VLD2LNdWB_register_Asm_I16: case ARM::VLD2LNdWB_register_Asm_S16:
5348 case ARM::VLD2LNdWB_register_Asm_U16:
5350 return ARM::VLD2LNd16_UPD;
5351 case ARM::VLD2LNdWB_register_Asm_32: case ARM::VLD2LNdWB_register_Asm_F:
5352 case ARM::VLD2LNdWB_register_Asm_F32: case ARM::VLD2LNdWB_register_Asm_I32:
5353 case ARM::VLD2LNdWB_register_Asm_S32: case ARM::VLD2LNdWB_register_Asm_U32:
5355 return ARM::VLD2LNd32_UPD;
5356 case ARM::VLD2LNqWB_register_Asm_16: case ARM::VLD2LNqWB_register_Asm_P16:
5357 case ARM::VLD2LNqWB_register_Asm_I16: case ARM::VLD2LNqWB_register_Asm_S16:
5358 case ARM::VLD2LNqWB_register_Asm_U16:
5360 return ARM::VLD2LNq16_UPD;
5361 case ARM::VLD2LNqWB_register_Asm_32: case ARM::VLD2LNqWB_register_Asm_F:
5362 case ARM::VLD2LNqWB_register_Asm_F32: case ARM::VLD2LNqWB_register_Asm_I32:
5363 case ARM::VLD2LNqWB_register_Asm_S32: case ARM::VLD2LNqWB_register_Asm_U32:
5365 return ARM::VLD2LNq32_UPD;
5366 case ARM::VLD2LNdAsm_8: case ARM::VLD2LNdAsm_P8:
5367 case ARM::VLD2LNdAsm_I8: case ARM::VLD2LNdAsm_S8:
5368 case ARM::VLD2LNdAsm_U8:
5370 return ARM::VLD2LNd8;
5371 case ARM::VLD2LNdAsm_16: case ARM::VLD2LNdAsm_P16:
5372 case ARM::VLD2LNdAsm_I16: case ARM::VLD2LNdAsm_S16:
5373 case ARM::VLD2LNdAsm_U16:
5375 return ARM::VLD2LNd16;
5376 case ARM::VLD2LNdAsm_32: case ARM::VLD2LNdAsm_F:
5377 case ARM::VLD2LNdAsm_F32: case ARM::VLD2LNdAsm_I32:
5378 case ARM::VLD2LNdAsm_S32: case ARM::VLD2LNdAsm_U32:
5380 return ARM::VLD2LNd32;
5381 case ARM::VLD2LNqAsm_16: case ARM::VLD2LNqAsm_P16:
5382 case ARM::VLD2LNqAsm_I16: case ARM::VLD2LNqAsm_S16:
5383 case ARM::VLD2LNqAsm_U16:
5385 return ARM::VLD2LNq16;
5386 case ARM::VLD2LNqAsm_32: case ARM::VLD2LNqAsm_F:
5387 case ARM::VLD2LNqAsm_F32: case ARM::VLD2LNqAsm_I32:
5388 case ARM::VLD2LNqAsm_S32: case ARM::VLD2LNqAsm_U32:
5390 return ARM::VLD2LNq32;
5395 processInstruction(MCInst &Inst,
5396 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
5397 switch (Inst.getOpcode()) {
5398 // Handle NEON VST complex aliases.
5399 case ARM::VST1LNdWB_register_Asm_8: case ARM::VST1LNdWB_register_Asm_P8:
5400 case ARM::VST1LNdWB_register_Asm_I8: case ARM::VST1LNdWB_register_Asm_S8:
5401 case ARM::VST1LNdWB_register_Asm_U8: case ARM::VST1LNdWB_register_Asm_16:
5402 case ARM::VST1LNdWB_register_Asm_P16: case ARM::VST1LNdWB_register_Asm_I16:
5403 case ARM::VST1LNdWB_register_Asm_S16: case ARM::VST1LNdWB_register_Asm_U16:
5404 case ARM::VST1LNdWB_register_Asm_32: case ARM::VST1LNdWB_register_Asm_F:
5405 case ARM::VST1LNdWB_register_Asm_F32: case ARM::VST1LNdWB_register_Asm_I32:
5406 case ARM::VST1LNdWB_register_Asm_S32: case ARM::VST1LNdWB_register_Asm_U32: {
5408 // Shuffle the operands around so the lane index operand is in the
5411 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5412 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5413 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5414 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5415 TmpInst.addOperand(Inst.getOperand(4)); // Rm
5416 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5417 TmpInst.addOperand(Inst.getOperand(1)); // lane
5418 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
5419 TmpInst.addOperand(Inst.getOperand(6));
5424 case ARM::VST2LNdWB_register_Asm_8: case ARM::VST2LNdWB_register_Asm_P8:
5425 case ARM::VST2LNdWB_register_Asm_I8: case ARM::VST2LNdWB_register_Asm_S8:
5426 case ARM::VST2LNdWB_register_Asm_U8: case ARM::VST2LNdWB_register_Asm_16:
5427 case ARM::VST2LNdWB_register_Asm_P16: case ARM::VST2LNdWB_register_Asm_I16:
5428 case ARM::VST2LNdWB_register_Asm_S16: case ARM::VST2LNdWB_register_Asm_U16:
5429 case ARM::VST2LNdWB_register_Asm_32: case ARM::VST2LNdWB_register_Asm_F:
5430 case ARM::VST2LNdWB_register_Asm_F32: case ARM::VST2LNdWB_register_Asm_I32:
5431 case ARM::VST2LNdWB_register_Asm_S32: case ARM::VST2LNdWB_register_Asm_U32:
5432 case ARM::VST2LNqWB_register_Asm_16: case ARM::VST2LNqWB_register_Asm_P16:
5433 case ARM::VST2LNqWB_register_Asm_I16: case ARM::VST2LNqWB_register_Asm_S16:
5434 case ARM::VST2LNqWB_register_Asm_U16: case ARM::VST2LNqWB_register_Asm_32:
5435 case ARM::VST2LNqWB_register_Asm_F: case ARM::VST2LNqWB_register_Asm_F32:
5436 case ARM::VST2LNqWB_register_Asm_I32: case ARM::VST2LNqWB_register_Asm_S32:
5437 case ARM::VST2LNqWB_register_Asm_U32: {
5439 // Shuffle the operands around so the lane index operand is in the
5442 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5443 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5444 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5445 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5446 TmpInst.addOperand(Inst.getOperand(4)); // Rm
5447 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5448 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5450 TmpInst.addOperand(Inst.getOperand(1)); // lane
5451 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
5452 TmpInst.addOperand(Inst.getOperand(6));
5456 case ARM::VST1LNdWB_fixed_Asm_8: case ARM::VST1LNdWB_fixed_Asm_P8:
5457 case ARM::VST1LNdWB_fixed_Asm_I8: case ARM::VST1LNdWB_fixed_Asm_S8:
5458 case ARM::VST1LNdWB_fixed_Asm_U8: case ARM::VST1LNdWB_fixed_Asm_16:
5459 case ARM::VST1LNdWB_fixed_Asm_P16: case ARM::VST1LNdWB_fixed_Asm_I16:
5460 case ARM::VST1LNdWB_fixed_Asm_S16: case ARM::VST1LNdWB_fixed_Asm_U16:
5461 case ARM::VST1LNdWB_fixed_Asm_32: case ARM::VST1LNdWB_fixed_Asm_F:
5462 case ARM::VST1LNdWB_fixed_Asm_F32: case ARM::VST1LNdWB_fixed_Asm_I32:
5463 case ARM::VST1LNdWB_fixed_Asm_S32: case ARM::VST1LNdWB_fixed_Asm_U32: {
5465 // Shuffle the operands around so the lane index operand is in the
5468 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5469 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5470 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5471 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5472 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
5473 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5474 TmpInst.addOperand(Inst.getOperand(1)); // lane
5475 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5476 TmpInst.addOperand(Inst.getOperand(5));
5481 case ARM::VST2LNdWB_fixed_Asm_8: case ARM::VST2LNdWB_fixed_Asm_P8:
5482 case ARM::VST2LNdWB_fixed_Asm_I8: case ARM::VST2LNdWB_fixed_Asm_S8:
5483 case ARM::VST2LNdWB_fixed_Asm_U8: case ARM::VST2LNdWB_fixed_Asm_16:
5484 case ARM::VST2LNdWB_fixed_Asm_P16: case ARM::VST2LNdWB_fixed_Asm_I16:
5485 case ARM::VST2LNdWB_fixed_Asm_S16: case ARM::VST2LNdWB_fixed_Asm_U16:
5486 case ARM::VST2LNdWB_fixed_Asm_32: case ARM::VST2LNdWB_fixed_Asm_F:
5487 case ARM::VST2LNdWB_fixed_Asm_F32: case ARM::VST2LNdWB_fixed_Asm_I32:
5488 case ARM::VST2LNdWB_fixed_Asm_S32: case ARM::VST2LNdWB_fixed_Asm_U32:
5489 case ARM::VST2LNqWB_fixed_Asm_16: case ARM::VST2LNqWB_fixed_Asm_P16:
5490 case ARM::VST2LNqWB_fixed_Asm_I16: case ARM::VST2LNqWB_fixed_Asm_S16:
5491 case ARM::VST2LNqWB_fixed_Asm_U16: case ARM::VST2LNqWB_fixed_Asm_32:
5492 case ARM::VST2LNqWB_fixed_Asm_F: case ARM::VST2LNqWB_fixed_Asm_F32:
5493 case ARM::VST2LNqWB_fixed_Asm_I32: case ARM::VST2LNqWB_fixed_Asm_S32:
5494 case ARM::VST2LNqWB_fixed_Asm_U32: {
5496 // Shuffle the operands around so the lane index operand is in the
5499 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5500 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5501 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5502 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5503 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
5504 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5505 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5507 TmpInst.addOperand(Inst.getOperand(1)); // lane
5508 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5509 TmpInst.addOperand(Inst.getOperand(5));
5513 case ARM::VST1LNdAsm_8: case ARM::VST1LNdAsm_P8: case ARM::VST1LNdAsm_I8:
5514 case ARM::VST1LNdAsm_S8: case ARM::VST1LNdAsm_U8: case ARM::VST1LNdAsm_16:
5515 case ARM::VST1LNdAsm_P16: case ARM::VST1LNdAsm_I16: case ARM::VST1LNdAsm_S16:
5516 case ARM::VST1LNdAsm_U16: case ARM::VST1LNdAsm_32: case ARM::VST1LNdAsm_F:
5517 case ARM::VST1LNdAsm_F32: case ARM::VST1LNdAsm_I32: case ARM::VST1LNdAsm_S32:
5518 case ARM::VST1LNdAsm_U32: {
5520 // Shuffle the operands around so the lane index operand is in the
5523 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5524 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5525 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5526 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5527 TmpInst.addOperand(Inst.getOperand(1)); // lane
5528 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5529 TmpInst.addOperand(Inst.getOperand(5));
5534 case ARM::VST2LNdAsm_8: case ARM::VST2LNdAsm_P8: case ARM::VST2LNdAsm_I8:
5535 case ARM::VST2LNdAsm_S8: case ARM::VST2LNdAsm_U8: case ARM::VST2LNdAsm_16:
5536 case ARM::VST2LNdAsm_P16: case ARM::VST2LNdAsm_I16: case ARM::VST2LNdAsm_S16:
5537 case ARM::VST2LNdAsm_U16: case ARM::VST2LNdAsm_32: case ARM::VST2LNdAsm_F:
5538 case ARM::VST2LNdAsm_F32: case ARM::VST2LNdAsm_I32: case ARM::VST2LNdAsm_S32:
5539 case ARM::VST2LNdAsm_U32: case ARM::VST2LNqAsm_16: case ARM::VST2LNqAsm_P16:
5540 case ARM::VST2LNqAsm_I16: case ARM::VST2LNqAsm_S16: case ARM::VST2LNqAsm_U16:
5541 case ARM::VST2LNqAsm_32: case ARM::VST2LNqAsm_F: case ARM::VST2LNqAsm_F32:
5542 case ARM::VST2LNqAsm_I32: case ARM::VST2LNqAsm_S32: case ARM::VST2LNqAsm_U32:{
5544 // Shuffle the operands around so the lane index operand is in the
5547 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5548 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5549 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5550 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5551 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5553 TmpInst.addOperand(Inst.getOperand(1)); // lane
5554 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5555 TmpInst.addOperand(Inst.getOperand(5));
5559 // Handle NEON VLD complex aliases.
5560 case ARM::VLD1LNdWB_register_Asm_8: case ARM::VLD1LNdWB_register_Asm_P8:
5561 case ARM::VLD1LNdWB_register_Asm_I8: case ARM::VLD1LNdWB_register_Asm_S8:
5562 case ARM::VLD1LNdWB_register_Asm_U8: case ARM::VLD1LNdWB_register_Asm_16:
5563 case ARM::VLD1LNdWB_register_Asm_P16: case ARM::VLD1LNdWB_register_Asm_I16:
5564 case ARM::VLD1LNdWB_register_Asm_S16: case ARM::VLD1LNdWB_register_Asm_U16:
5565 case ARM::VLD1LNdWB_register_Asm_32: case ARM::VLD1LNdWB_register_Asm_F:
5566 case ARM::VLD1LNdWB_register_Asm_F32: case ARM::VLD1LNdWB_register_Asm_I32:
5567 case ARM::VLD1LNdWB_register_Asm_S32: case ARM::VLD1LNdWB_register_Asm_U32: {
5569 // Shuffle the operands around so the lane index operand is in the
5572 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5573 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5574 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5575 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5576 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5577 TmpInst.addOperand(Inst.getOperand(4)); // Rm
5578 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5579 TmpInst.addOperand(Inst.getOperand(1)); // lane
5580 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
5581 TmpInst.addOperand(Inst.getOperand(6));
5586 case ARM::VLD2LNdWB_register_Asm_8: case ARM::VLD2LNdWB_register_Asm_P8:
5587 case ARM::VLD2LNdWB_register_Asm_I8: case ARM::VLD2LNdWB_register_Asm_S8:
5588 case ARM::VLD2LNdWB_register_Asm_U8: case ARM::VLD2LNdWB_register_Asm_16:
5589 case ARM::VLD2LNdWB_register_Asm_P16: case ARM::VLD2LNdWB_register_Asm_I16:
5590 case ARM::VLD2LNdWB_register_Asm_S16: case ARM::VLD2LNdWB_register_Asm_U16:
5591 case ARM::VLD2LNdWB_register_Asm_32: case ARM::VLD2LNdWB_register_Asm_F:
5592 case ARM::VLD2LNdWB_register_Asm_F32: case ARM::VLD2LNdWB_register_Asm_I32:
5593 case ARM::VLD2LNdWB_register_Asm_S32: case ARM::VLD2LNdWB_register_Asm_U32:
5594 case ARM::VLD2LNqWB_register_Asm_16: case ARM::VLD2LNqWB_register_Asm_P16:
5595 case ARM::VLD2LNqWB_register_Asm_I16: case ARM::VLD2LNqWB_register_Asm_S16:
5596 case ARM::VLD2LNqWB_register_Asm_U16: case ARM::VLD2LNqWB_register_Asm_32:
5597 case ARM::VLD2LNqWB_register_Asm_F: case ARM::VLD2LNqWB_register_Asm_F32:
5598 case ARM::VLD2LNqWB_register_Asm_I32: case ARM::VLD2LNqWB_register_Asm_S32:
5599 case ARM::VLD2LNqWB_register_Asm_U32: {
5601 // Shuffle the operands around so the lane index operand is in the
5604 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5605 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5606 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5608 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5609 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5610 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5611 TmpInst.addOperand(Inst.getOperand(4)); // Rm
5612 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5613 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5615 TmpInst.addOperand(Inst.getOperand(1)); // lane
5616 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
5617 TmpInst.addOperand(Inst.getOperand(6));
5622 case ARM::VLD1LNdWB_fixed_Asm_8: case ARM::VLD1LNdWB_fixed_Asm_P8:
5623 case ARM::VLD1LNdWB_fixed_Asm_I8: case ARM::VLD1LNdWB_fixed_Asm_S8:
5624 case ARM::VLD1LNdWB_fixed_Asm_U8: case ARM::VLD1LNdWB_fixed_Asm_16:
5625 case ARM::VLD1LNdWB_fixed_Asm_P16: case ARM::VLD1LNdWB_fixed_Asm_I16:
5626 case ARM::VLD1LNdWB_fixed_Asm_S16: case ARM::VLD1LNdWB_fixed_Asm_U16:
5627 case ARM::VLD1LNdWB_fixed_Asm_32: case ARM::VLD1LNdWB_fixed_Asm_F:
5628 case ARM::VLD1LNdWB_fixed_Asm_F32: case ARM::VLD1LNdWB_fixed_Asm_I32:
5629 case ARM::VLD1LNdWB_fixed_Asm_S32: case ARM::VLD1LNdWB_fixed_Asm_U32: {
5631 // Shuffle the operands around so the lane index operand is in the
5634 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5635 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5636 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5637 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5638 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5639 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
5640 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5641 TmpInst.addOperand(Inst.getOperand(1)); // lane
5642 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5643 TmpInst.addOperand(Inst.getOperand(5));
5648 case ARM::VLD2LNdWB_fixed_Asm_8: case ARM::VLD2LNdWB_fixed_Asm_P8:
5649 case ARM::VLD2LNdWB_fixed_Asm_I8: case ARM::VLD2LNdWB_fixed_Asm_S8:
5650 case ARM::VLD2LNdWB_fixed_Asm_U8: case ARM::VLD2LNdWB_fixed_Asm_16:
5651 case ARM::VLD2LNdWB_fixed_Asm_P16: case ARM::VLD2LNdWB_fixed_Asm_I16:
5652 case ARM::VLD2LNdWB_fixed_Asm_S16: case ARM::VLD2LNdWB_fixed_Asm_U16:
5653 case ARM::VLD2LNdWB_fixed_Asm_32: case ARM::VLD2LNdWB_fixed_Asm_F:
5654 case ARM::VLD2LNdWB_fixed_Asm_F32: case ARM::VLD2LNdWB_fixed_Asm_I32:
5655 case ARM::VLD2LNdWB_fixed_Asm_S32: case ARM::VLD2LNdWB_fixed_Asm_U32:
5656 case ARM::VLD2LNqWB_fixed_Asm_16: case ARM::VLD2LNqWB_fixed_Asm_P16:
5657 case ARM::VLD2LNqWB_fixed_Asm_I16: case ARM::VLD2LNqWB_fixed_Asm_S16:
5658 case ARM::VLD2LNqWB_fixed_Asm_U16: case ARM::VLD2LNqWB_fixed_Asm_32:
5659 case ARM::VLD2LNqWB_fixed_Asm_F: case ARM::VLD2LNqWB_fixed_Asm_F32:
5660 case ARM::VLD2LNqWB_fixed_Asm_I32: case ARM::VLD2LNqWB_fixed_Asm_S32:
5661 case ARM::VLD2LNqWB_fixed_Asm_U32: {
5663 // Shuffle the operands around so the lane index operand is in the
5666 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5667 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5668 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5670 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5671 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5672 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5673 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
5674 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5675 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5677 TmpInst.addOperand(Inst.getOperand(1)); // lane
5678 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5679 TmpInst.addOperand(Inst.getOperand(5));
5684 case ARM::VLD1LNdAsm_8: case ARM::VLD1LNdAsm_P8: case ARM::VLD1LNdAsm_I8:
5685 case ARM::VLD1LNdAsm_S8: case ARM::VLD1LNdAsm_U8: case ARM::VLD1LNdAsm_16:
5686 case ARM::VLD1LNdAsm_P16: case ARM::VLD1LNdAsm_I16: case ARM::VLD1LNdAsm_S16:
5687 case ARM::VLD1LNdAsm_U16: case ARM::VLD1LNdAsm_32: case ARM::VLD1LNdAsm_F:
5688 case ARM::VLD1LNdAsm_F32: case ARM::VLD1LNdAsm_I32: case ARM::VLD1LNdAsm_S32:
5689 case ARM::VLD1LNdAsm_U32: {
5691 // Shuffle the operands around so the lane index operand is in the
5694 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5695 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5696 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5697 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5698 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5699 TmpInst.addOperand(Inst.getOperand(1)); // lane
5700 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5701 TmpInst.addOperand(Inst.getOperand(5));
5706 case ARM::VLD2LNdAsm_8: case ARM::VLD2LNdAsm_P8: case ARM::VLD2LNdAsm_I8:
5707 case ARM::VLD2LNdAsm_S8: case ARM::VLD2LNdAsm_U8: case ARM::VLD2LNdAsm_16:
5708 case ARM::VLD2LNdAsm_P16: case ARM::VLD2LNdAsm_I16: case ARM::VLD2LNdAsm_S16:
5709 case ARM::VLD2LNdAsm_U16: case ARM::VLD2LNdAsm_32: case ARM::VLD2LNdAsm_F:
5710 case ARM::VLD2LNdAsm_F32: case ARM::VLD2LNdAsm_I32: case ARM::VLD2LNdAsm_S32:
5711 case ARM::VLD2LNdAsm_U32: case ARM::VLD2LNqAsm_16: case ARM::VLD2LNqAsm_P16:
5712 case ARM::VLD2LNqAsm_I16: case ARM::VLD2LNqAsm_S16: case ARM::VLD2LNqAsm_U16:
5713 case ARM::VLD2LNqAsm_32: case ARM::VLD2LNqAsm_F: case ARM::VLD2LNqAsm_F32:
5714 case ARM::VLD2LNqAsm_I32: case ARM::VLD2LNqAsm_S32:
5715 case ARM::VLD2LNqAsm_U32: {
5717 // Shuffle the operands around so the lane index operand is in the
5720 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5721 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5722 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5724 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5725 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5726 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5727 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5729 TmpInst.addOperand(Inst.getOperand(1)); // lane
5730 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5731 TmpInst.addOperand(Inst.getOperand(5));
5735 // Handle the Thumb2 mode MOV complex aliases.
5737 case ARM::t2MOVSsr: {
5738 // Which instruction to expand to depends on the CCOut operand and
5739 // whether we're in an IT block if the register operands are low
5741 bool isNarrow = false;
5742 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
5743 isARMLowRegister(Inst.getOperand(1).getReg()) &&
5744 isARMLowRegister(Inst.getOperand(2).getReg()) &&
5745 Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() &&
5746 inITBlock() == (Inst.getOpcode() == ARM::t2MOVsr))
5750 switch(ARM_AM::getSORegShOp(Inst.getOperand(3).getImm())) {
5751 default: llvm_unreachable("unexpected opcode!");
5752 case ARM_AM::asr: newOpc = isNarrow ? ARM::tASRrr : ARM::t2ASRrr; break;
5753 case ARM_AM::lsr: newOpc = isNarrow ? ARM::tLSRrr : ARM::t2LSRrr; break;
5754 case ARM_AM::lsl: newOpc = isNarrow ? ARM::tLSLrr : ARM::t2LSLrr; break;
5755 case ARM_AM::ror: newOpc = isNarrow ? ARM::tROR : ARM::t2RORrr; break;
5757 TmpInst.setOpcode(newOpc);
5758 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5760 TmpInst.addOperand(MCOperand::CreateReg(
5761 Inst.getOpcode() == ARM::t2MOVSsr ? ARM::CPSR : 0));
5762 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5763 TmpInst.addOperand(Inst.getOperand(2)); // Rm
5764 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5765 TmpInst.addOperand(Inst.getOperand(5));
5767 TmpInst.addOperand(MCOperand::CreateReg(
5768 Inst.getOpcode() == ARM::t2MOVSsr ? ARM::CPSR : 0));
5773 case ARM::t2MOVSsi: {
5774 // Which instruction to expand to depends on the CCOut operand and
5775 // whether we're in an IT block if the register operands are low
5777 bool isNarrow = false;
5778 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
5779 isARMLowRegister(Inst.getOperand(1).getReg()) &&
5780 inITBlock() == (Inst.getOpcode() == ARM::t2MOVsi))
5784 switch(ARM_AM::getSORegShOp(Inst.getOperand(2).getImm())) {
5785 default: llvm_unreachable("unexpected opcode!");
5786 case ARM_AM::asr: newOpc = isNarrow ? ARM::tASRri : ARM::t2ASRri; break;
5787 case ARM_AM::lsr: newOpc = isNarrow ? ARM::tLSRri : ARM::t2LSRri; break;
5788 case ARM_AM::lsl: newOpc = isNarrow ? ARM::tLSLri : ARM::t2LSLri; break;
5789 case ARM_AM::ror: newOpc = ARM::t2RORri; isNarrow = false; break;
5790 case ARM_AM::rrx: isNarrow = false; newOpc = ARM::t2RRX; break;
5792 unsigned Ammount = ARM_AM::getSORegOffset(Inst.getOperand(2).getImm());
5793 if (Ammount == 32) Ammount = 0;
5794 TmpInst.setOpcode(newOpc);
5795 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5797 TmpInst.addOperand(MCOperand::CreateReg(
5798 Inst.getOpcode() == ARM::t2MOVSsi ? ARM::CPSR : 0));
5799 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5800 if (newOpc != ARM::t2RRX)
5801 TmpInst.addOperand(MCOperand::CreateImm(Ammount));
5802 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
5803 TmpInst.addOperand(Inst.getOperand(4));
5805 TmpInst.addOperand(MCOperand::CreateReg(
5806 Inst.getOpcode() == ARM::t2MOVSsi ? ARM::CPSR : 0));
5810 // Handle the ARM mode MOV complex aliases.
5815 ARM_AM::ShiftOpc ShiftTy;
5816 switch(Inst.getOpcode()) {
5817 default: llvm_unreachable("unexpected opcode!");
5818 case ARM::ASRr: ShiftTy = ARM_AM::asr; break;
5819 case ARM::LSRr: ShiftTy = ARM_AM::lsr; break;
5820 case ARM::LSLr: ShiftTy = ARM_AM::lsl; break;
5821 case ARM::RORr: ShiftTy = ARM_AM::ror; break;
5823 unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, 0);
5825 TmpInst.setOpcode(ARM::MOVsr);
5826 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5827 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5828 TmpInst.addOperand(Inst.getOperand(2)); // Rm
5829 TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
5830 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
5831 TmpInst.addOperand(Inst.getOperand(4));
5832 TmpInst.addOperand(Inst.getOperand(5)); // cc_out
5840 ARM_AM::ShiftOpc ShiftTy;
5841 switch(Inst.getOpcode()) {
5842 default: llvm_unreachable("unexpected opcode!");
5843 case ARM::ASRi: ShiftTy = ARM_AM::asr; break;
5844 case ARM::LSRi: ShiftTy = ARM_AM::lsr; break;
5845 case ARM::LSLi: ShiftTy = ARM_AM::lsl; break;
5846 case ARM::RORi: ShiftTy = ARM_AM::ror; break;
5848 // A shift by zero is a plain MOVr, not a MOVsi.
5849 unsigned Amt = Inst.getOperand(2).getImm();
5850 unsigned Opc = Amt == 0 ? ARM::MOVr : ARM::MOVsi;
5851 unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, Amt);
5853 TmpInst.setOpcode(Opc);
5854 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5855 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5856 if (Opc == ARM::MOVsi)
5857 TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
5858 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
5859 TmpInst.addOperand(Inst.getOperand(4));
5860 TmpInst.addOperand(Inst.getOperand(5)); // cc_out
5865 unsigned Shifter = ARM_AM::getSORegOpc(ARM_AM::rrx, 0);
5867 TmpInst.setOpcode(ARM::MOVsi);
5868 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5869 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5870 TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
5871 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5872 TmpInst.addOperand(Inst.getOperand(3));
5873 TmpInst.addOperand(Inst.getOperand(4)); // cc_out
5877 case ARM::t2LDMIA_UPD: {
5878 // If this is a load of a single register, then we should use
5879 // a post-indexed LDR instruction instead, per the ARM ARM.
5880 if (Inst.getNumOperands() != 5)
5883 TmpInst.setOpcode(ARM::t2LDR_POST);
5884 TmpInst.addOperand(Inst.getOperand(4)); // Rt
5885 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
5886 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5887 TmpInst.addOperand(MCOperand::CreateImm(4));
5888 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5889 TmpInst.addOperand(Inst.getOperand(3));
5893 case ARM::t2STMDB_UPD: {
5894 // If this is a store of a single register, then we should use
5895 // a pre-indexed STR instruction instead, per the ARM ARM.
5896 if (Inst.getNumOperands() != 5)
5899 TmpInst.setOpcode(ARM::t2STR_PRE);
5900 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
5901 TmpInst.addOperand(Inst.getOperand(4)); // Rt
5902 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5903 TmpInst.addOperand(MCOperand::CreateImm(-4));
5904 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5905 TmpInst.addOperand(Inst.getOperand(3));
5909 case ARM::LDMIA_UPD:
5910 // If this is a load of a single register via a 'pop', then we should use
5911 // a post-indexed LDR instruction instead, per the ARM ARM.
5912 if (static_cast<ARMOperand*>(Operands[0])->getToken() == "pop" &&
5913 Inst.getNumOperands() == 5) {
5915 TmpInst.setOpcode(ARM::LDR_POST_IMM);
5916 TmpInst.addOperand(Inst.getOperand(4)); // Rt
5917 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
5918 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5919 TmpInst.addOperand(MCOperand::CreateReg(0)); // am2offset
5920 TmpInst.addOperand(MCOperand::CreateImm(4));
5921 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5922 TmpInst.addOperand(Inst.getOperand(3));
5927 case ARM::STMDB_UPD:
5928 // If this is a store of a single register via a 'push', then we should use
5929 // a pre-indexed STR instruction instead, per the ARM ARM.
5930 if (static_cast<ARMOperand*>(Operands[0])->getToken() == "push" &&
5931 Inst.getNumOperands() == 5) {
5933 TmpInst.setOpcode(ARM::STR_PRE_IMM);
5934 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
5935 TmpInst.addOperand(Inst.getOperand(4)); // Rt
5936 TmpInst.addOperand(Inst.getOperand(1)); // addrmode_imm12
5937 TmpInst.addOperand(MCOperand::CreateImm(-4));
5938 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5939 TmpInst.addOperand(Inst.getOperand(3));
5943 case ARM::t2ADDri12:
5944 // If the immediate fits for encoding T3 (t2ADDri) and the generic "add"
5945 // mnemonic was used (not "addw"), encoding T3 is preferred.
5946 if (static_cast<ARMOperand*>(Operands[0])->getToken() != "add" ||
5947 ARM_AM::getT2SOImmVal(Inst.getOperand(2).getImm()) == -1)
5949 Inst.setOpcode(ARM::t2ADDri);
5950 Inst.addOperand(MCOperand::CreateReg(0)); // cc_out
5952 case ARM::t2SUBri12:
5953 // If the immediate fits for encoding T3 (t2SUBri) and the generic "sub"
5954 // mnemonic was used (not "subw"), encoding T3 is preferred.
5955 if (static_cast<ARMOperand*>(Operands[0])->getToken() != "sub" ||
5956 ARM_AM::getT2SOImmVal(Inst.getOperand(2).getImm()) == -1)
5958 Inst.setOpcode(ARM::t2SUBri);
5959 Inst.addOperand(MCOperand::CreateReg(0)); // cc_out
5962 // If the immediate is in the range 0-7, we want tADDi3 iff Rd was
5963 // explicitly specified. From the ARM ARM: "Encoding T1 is preferred
5964 // to encoding T2 if <Rd> is specified and encoding T2 is preferred
5965 // to encoding T1 if <Rd> is omitted."
5966 if (Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
5967 Inst.setOpcode(ARM::tADDi3);
5972 // If the immediate is in the range 0-7, we want tADDi3 iff Rd was
5973 // explicitly specified. From the ARM ARM: "Encoding T1 is preferred
5974 // to encoding T2 if <Rd> is specified and encoding T2 is preferred
5975 // to encoding T1 if <Rd> is omitted."
5976 if (Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
5977 Inst.setOpcode(ARM::tSUBi3);
5981 case ARM::t2ADDrr: {
5982 // If the destination and first source operand are the same, and
5983 // there's no setting of the flags, use encoding T2 instead of T3.
5984 // Note that this is only for ADD, not SUB. This mirrors the system
5985 // 'as' behaviour. Make sure the wide encoding wasn't explicit.
5986 if (Inst.getOperand(0).getReg() != Inst.getOperand(1).getReg() ||
5987 Inst.getOperand(5).getReg() != 0 ||
5988 (static_cast<ARMOperand*>(Operands[3])->isToken() &&
5989 static_cast<ARMOperand*>(Operands[3])->getToken() == ".w"))
5992 TmpInst.setOpcode(ARM::tADDhirr);
5993 TmpInst.addOperand(Inst.getOperand(0));
5994 TmpInst.addOperand(Inst.getOperand(0));
5995 TmpInst.addOperand(Inst.getOperand(2));
5996 TmpInst.addOperand(Inst.getOperand(3));
5997 TmpInst.addOperand(Inst.getOperand(4));
6002 // A Thumb conditional branch outside of an IT block is a tBcc.
6003 if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock()) {
6004 Inst.setOpcode(ARM::tBcc);
6009 // A Thumb2 conditional branch outside of an IT block is a t2Bcc.
6010 if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock()){
6011 Inst.setOpcode(ARM::t2Bcc);
6016 // If the conditional is AL or we're in an IT block, we really want t2B.
6017 if (Inst.getOperand(1).getImm() == ARMCC::AL || inITBlock()) {
6018 Inst.setOpcode(ARM::t2B);
6023 // If the conditional is AL, we really want tB.
6024 if (Inst.getOperand(1).getImm() == ARMCC::AL) {
6025 Inst.setOpcode(ARM::tB);
6030 // If the register list contains any high registers, or if the writeback
6031 // doesn't match what tLDMIA can do, we need to use the 32-bit encoding
6032 // instead if we're in Thumb2. Otherwise, this should have generated
6033 // an error in validateInstruction().
6034 unsigned Rn = Inst.getOperand(0).getReg();
6035 bool hasWritebackToken =
6036 (static_cast<ARMOperand*>(Operands[3])->isToken() &&
6037 static_cast<ARMOperand*>(Operands[3])->getToken() == "!");
6038 bool listContainsBase;
6039 if (checkLowRegisterList(Inst, 3, Rn, 0, listContainsBase) ||
6040 (!listContainsBase && !hasWritebackToken) ||
6041 (listContainsBase && hasWritebackToken)) {
6042 // 16-bit encoding isn't sufficient. Switch to the 32-bit version.
6043 assert (isThumbTwo());
6044 Inst.setOpcode(hasWritebackToken ? ARM::t2LDMIA_UPD : ARM::t2LDMIA);
6045 // If we're switching to the updating version, we need to insert
6046 // the writeback tied operand.
6047 if (hasWritebackToken)
6048 Inst.insert(Inst.begin(),
6049 MCOperand::CreateReg(Inst.getOperand(0).getReg()));
6054 case ARM::tSTMIA_UPD: {
6055 // If the register list contains any high registers, we need to use
6056 // the 32-bit encoding instead if we're in Thumb2. Otherwise, this
6057 // should have generated an error in validateInstruction().
6058 unsigned Rn = Inst.getOperand(0).getReg();
6059 bool listContainsBase;
6060 if (checkLowRegisterList(Inst, 4, Rn, 0, listContainsBase)) {
6061 // 16-bit encoding isn't sufficient. Switch to the 32-bit version.
6062 assert (isThumbTwo());
6063 Inst.setOpcode(ARM::t2STMIA_UPD);
6069 bool listContainsBase;
6070 // If the register list contains any high registers, we need to use
6071 // the 32-bit encoding instead if we're in Thumb2. Otherwise, this
6072 // should have generated an error in validateInstruction().
6073 if (!checkLowRegisterList(Inst, 2, 0, ARM::PC, listContainsBase))
6075 assert (isThumbTwo());
6076 Inst.setOpcode(ARM::t2LDMIA_UPD);
6077 // Add the base register and writeback operands.
6078 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
6079 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
6083 bool listContainsBase;
6084 if (!checkLowRegisterList(Inst, 2, 0, ARM::LR, listContainsBase))
6086 assert (isThumbTwo());
6087 Inst.setOpcode(ARM::t2STMDB_UPD);
6088 // Add the base register and writeback operands.
6089 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
6090 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
6094 // If we can use the 16-bit encoding and the user didn't explicitly
6095 // request the 32-bit variant, transform it here.
6096 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
6097 Inst.getOperand(1).getImm() <= 255 &&
6098 ((!inITBlock() && Inst.getOperand(2).getImm() == ARMCC::AL &&
6099 Inst.getOperand(4).getReg() == ARM::CPSR) ||
6100 (inITBlock() && Inst.getOperand(4).getReg() == 0)) &&
6101 (!static_cast<ARMOperand*>(Operands[2])->isToken() ||
6102 static_cast<ARMOperand*>(Operands[2])->getToken() != ".w")) {
6103 // The operands aren't in the same order for tMOVi8...
6105 TmpInst.setOpcode(ARM::tMOVi8);
6106 TmpInst.addOperand(Inst.getOperand(0));
6107 TmpInst.addOperand(Inst.getOperand(4));
6108 TmpInst.addOperand(Inst.getOperand(1));
6109 TmpInst.addOperand(Inst.getOperand(2));
6110 TmpInst.addOperand(Inst.getOperand(3));
6117 // If we can use the 16-bit encoding and the user didn't explicitly
6118 // request the 32-bit variant, transform it here.
6119 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
6120 isARMLowRegister(Inst.getOperand(1).getReg()) &&
6121 Inst.getOperand(2).getImm() == ARMCC::AL &&
6122 Inst.getOperand(4).getReg() == ARM::CPSR &&
6123 (!static_cast<ARMOperand*>(Operands[2])->isToken() ||
6124 static_cast<ARMOperand*>(Operands[2])->getToken() != ".w")) {
6125 // The operands aren't the same for tMOV[S]r... (no cc_out)
6127 TmpInst.setOpcode(Inst.getOperand(4).getReg() ? ARM::tMOVSr : ARM::tMOVr);
6128 TmpInst.addOperand(Inst.getOperand(0));
6129 TmpInst.addOperand(Inst.getOperand(1));
6130 TmpInst.addOperand(Inst.getOperand(2));
6131 TmpInst.addOperand(Inst.getOperand(3));
6141 // If we can use the 16-bit encoding and the user didn't explicitly
6142 // request the 32-bit variant, transform it here.
6143 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
6144 isARMLowRegister(Inst.getOperand(1).getReg()) &&
6145 Inst.getOperand(2).getImm() == 0 &&
6146 (!static_cast<ARMOperand*>(Operands[2])->isToken() ||
6147 static_cast<ARMOperand*>(Operands[2])->getToken() != ".w")) {
6149 switch (Inst.getOpcode()) {
6150 default: llvm_unreachable("Illegal opcode!");
6151 case ARM::t2SXTH: NewOpc = ARM::tSXTH; break;
6152 case ARM::t2SXTB: NewOpc = ARM::tSXTB; break;
6153 case ARM::t2UXTH: NewOpc = ARM::tUXTH; break;
6154 case ARM::t2UXTB: NewOpc = ARM::tUXTB; break;
6156 // The operands aren't the same for thumb1 (no rotate operand).
6158 TmpInst.setOpcode(NewOpc);
6159 TmpInst.addOperand(Inst.getOperand(0));
6160 TmpInst.addOperand(Inst.getOperand(1));
6161 TmpInst.addOperand(Inst.getOperand(3));
6162 TmpInst.addOperand(Inst.getOperand(4));
6169 ARM_AM::ShiftOpc SOpc = ARM_AM::getSORegShOp(Inst.getOperand(2).getImm());
6170 if (SOpc == ARM_AM::rrx) return false;
6171 if (ARM_AM::getSORegOffset(Inst.getOperand(2).getImm()) == 0) {
6172 // Shifting by zero is accepted as a vanilla 'MOVr'
6174 TmpInst.setOpcode(ARM::MOVr);
6175 TmpInst.addOperand(Inst.getOperand(0));
6176 TmpInst.addOperand(Inst.getOperand(1));
6177 TmpInst.addOperand(Inst.getOperand(3));
6178 TmpInst.addOperand(Inst.getOperand(4));
6179 TmpInst.addOperand(Inst.getOperand(5));
6192 ARM_AM::ShiftOpc SOpc = ARM_AM::getSORegShOp(Inst.getOperand(3).getImm());
6193 if (SOpc == ARM_AM::rrx) return false;
6194 switch (Inst.getOpcode()) {
6195 default: assert("unexpected opcode!");
6196 case ARM::ANDrsi: newOpc = ARM::ANDrr; break;
6197 case ARM::ORRrsi: newOpc = ARM::ORRrr; break;
6198 case ARM::EORrsi: newOpc = ARM::EORrr; break;
6199 case ARM::BICrsi: newOpc = ARM::BICrr; break;
6200 case ARM::SUBrsi: newOpc = ARM::SUBrr; break;
6201 case ARM::ADDrsi: newOpc = ARM::ADDrr; break;
6203 // If the shift is by zero, use the non-shifted instruction definition.
6204 if (ARM_AM::getSORegOffset(Inst.getOperand(3).getImm()) == 0) {
6206 TmpInst.setOpcode(newOpc);
6207 TmpInst.addOperand(Inst.getOperand(0));
6208 TmpInst.addOperand(Inst.getOperand(1));
6209 TmpInst.addOperand(Inst.getOperand(2));
6210 TmpInst.addOperand(Inst.getOperand(4));
6211 TmpInst.addOperand(Inst.getOperand(5));
6212 TmpInst.addOperand(Inst.getOperand(6));
6219 // The mask bits for all but the first condition are represented as
6220 // the low bit of the condition code value implies 't'. We currently
6221 // always have 1 implies 't', so XOR toggle the bits if the low bit
6222 // of the condition code is zero. The encoding also expects the low
6223 // bit of the condition to be encoded as bit 4 of the mask operand,
6224 // so mask that in if needed
6225 MCOperand &MO = Inst.getOperand(1);
6226 unsigned Mask = MO.getImm();
6227 unsigned OrigMask = Mask;
6228 unsigned TZ = CountTrailingZeros_32(Mask);
6229 if ((Inst.getOperand(0).getImm() & 1) == 0) {
6230 assert(Mask && TZ <= 3 && "illegal IT mask value!");
6231 for (unsigned i = 3; i != TZ; --i)
6237 // Set up the IT block state according to the IT instruction we just
6239 assert(!inITBlock() && "nested IT blocks?!");
6240 ITState.Cond = ARMCC::CondCodes(Inst.getOperand(0).getImm());
6241 ITState.Mask = OrigMask; // Use the original mask, not the updated one.
6242 ITState.CurPosition = 0;
6243 ITState.FirstCond = true;
6250 unsigned ARMAsmParser::checkTargetMatchPredicate(MCInst &Inst) {
6251 // 16-bit thumb arithmetic instructions either require or preclude the 'S'
6252 // suffix depending on whether they're in an IT block or not.
6253 unsigned Opc = Inst.getOpcode();
6254 const MCInstrDesc &MCID = getInstDesc(Opc);
6255 if (MCID.TSFlags & ARMII::ThumbArithFlagSetting) {
6256 assert(MCID.hasOptionalDef() &&
6257 "optionally flag setting instruction missing optional def operand");
6258 assert(MCID.NumOperands == Inst.getNumOperands() &&
6259 "operand count mismatch!");
6260 // Find the optional-def operand (cc_out).
6263 !MCID.OpInfo[OpNo].isOptionalDef() && OpNo < MCID.NumOperands;
6266 // If we're parsing Thumb1, reject it completely.
6267 if (isThumbOne() && Inst.getOperand(OpNo).getReg() != ARM::CPSR)
6268 return Match_MnemonicFail;
6269 // If we're parsing Thumb2, which form is legal depends on whether we're
6271 if (isThumbTwo() && Inst.getOperand(OpNo).getReg() != ARM::CPSR &&
6273 return Match_RequiresITBlock;
6274 if (isThumbTwo() && Inst.getOperand(OpNo).getReg() == ARM::CPSR &&
6276 return Match_RequiresNotITBlock;
6278 // Some high-register supporting Thumb1 encodings only allow both registers
6279 // to be from r0-r7 when in Thumb2.
6280 else if (Opc == ARM::tADDhirr && isThumbOne() &&
6281 isARMLowRegister(Inst.getOperand(1).getReg()) &&
6282 isARMLowRegister(Inst.getOperand(2).getReg()))
6283 return Match_RequiresThumb2;
6284 // Others only require ARMv6 or later.
6285 else if (Opc == ARM::tMOVr && isThumbOne() && !hasV6Ops() &&
6286 isARMLowRegister(Inst.getOperand(0).getReg()) &&
6287 isARMLowRegister(Inst.getOperand(1).getReg()))
6288 return Match_RequiresV6;
6289 return Match_Success;
6293 MatchAndEmitInstruction(SMLoc IDLoc,
6294 SmallVectorImpl<MCParsedAsmOperand*> &Operands,
6298 unsigned MatchResult;
6299 MatchResult = MatchInstructionImpl(Operands, Inst, ErrorInfo);
6300 switch (MatchResult) {
6303 // Context sensitive operand constraints aren't handled by the matcher,
6304 // so check them here.
6305 if (validateInstruction(Inst, Operands)) {
6306 // Still progress the IT block, otherwise one wrong condition causes
6307 // nasty cascading errors.
6308 forwardITPosition();
6312 // Some instructions need post-processing to, for example, tweak which
6313 // encoding is selected. Loop on it while changes happen so the
6314 // individual transformations can chain off each other. E.g.,
6315 // tPOP(r8)->t2LDMIA_UPD(sp,r8)->t2STR_POST(sp,r8)
6316 while (processInstruction(Inst, Operands))
6319 // Only move forward at the very end so that everything in validate
6320 // and process gets a consistent answer about whether we're in an IT
6322 forwardITPosition();
6324 Out.EmitInstruction(Inst);
6326 case Match_MissingFeature:
6327 Error(IDLoc, "instruction requires a CPU feature not currently enabled");
6329 case Match_InvalidOperand: {
6330 SMLoc ErrorLoc = IDLoc;
6331 if (ErrorInfo != ~0U) {
6332 if (ErrorInfo >= Operands.size())
6333 return Error(IDLoc, "too few operands for instruction");
6335 ErrorLoc = ((ARMOperand*)Operands[ErrorInfo])->getStartLoc();
6336 if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
6339 return Error(ErrorLoc, "invalid operand for instruction");
6341 case Match_MnemonicFail:
6342 return Error(IDLoc, "invalid instruction");
6343 case Match_ConversionFail:
6344 // The converter function will have already emited a diagnostic.
6346 case Match_RequiresNotITBlock:
6347 return Error(IDLoc, "flag setting instruction only valid outside IT block");
6348 case Match_RequiresITBlock:
6349 return Error(IDLoc, "instruction only valid inside IT block");
6350 case Match_RequiresV6:
6351 return Error(IDLoc, "instruction variant requires ARMv6 or later");
6352 case Match_RequiresThumb2:
6353 return Error(IDLoc, "instruction variant requires Thumb2");
6356 llvm_unreachable("Implement any new match types added!");
6360 /// parseDirective parses the arm specific directives
6361 bool ARMAsmParser::ParseDirective(AsmToken DirectiveID) {
6362 StringRef IDVal = DirectiveID.getIdentifier();
6363 if (IDVal == ".word")
6364 return parseDirectiveWord(4, DirectiveID.getLoc());
6365 else if (IDVal == ".thumb")
6366 return parseDirectiveThumb(DirectiveID.getLoc());
6367 else if (IDVal == ".arm")
6368 return parseDirectiveARM(DirectiveID.getLoc());
6369 else if (IDVal == ".thumb_func")
6370 return parseDirectiveThumbFunc(DirectiveID.getLoc());
6371 else if (IDVal == ".code")
6372 return parseDirectiveCode(DirectiveID.getLoc());
6373 else if (IDVal == ".syntax")
6374 return parseDirectiveSyntax(DirectiveID.getLoc());
6375 else if (IDVal == ".unreq")
6376 return parseDirectiveUnreq(DirectiveID.getLoc());
6377 else if (IDVal == ".arch")
6378 return parseDirectiveArch(DirectiveID.getLoc());
6379 else if (IDVal == ".eabi_attribute")
6380 return parseDirectiveEabiAttr(DirectiveID.getLoc());
6384 /// parseDirectiveWord
6385 /// ::= .word [ expression (, expression)* ]
6386 bool ARMAsmParser::parseDirectiveWord(unsigned Size, SMLoc L) {
6387 if (getLexer().isNot(AsmToken::EndOfStatement)) {
6389 const MCExpr *Value;
6390 if (getParser().ParseExpression(Value))
6393 getParser().getStreamer().EmitValue(Value, Size, 0/*addrspace*/);
6395 if (getLexer().is(AsmToken::EndOfStatement))
6398 // FIXME: Improve diagnostic.
6399 if (getLexer().isNot(AsmToken::Comma))
6400 return Error(L, "unexpected token in directive");
6409 /// parseDirectiveThumb
6411 bool ARMAsmParser::parseDirectiveThumb(SMLoc L) {
6412 if (getLexer().isNot(AsmToken::EndOfStatement))
6413 return Error(L, "unexpected token in directive");
6418 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
6422 /// parseDirectiveARM
6424 bool ARMAsmParser::parseDirectiveARM(SMLoc L) {
6425 if (getLexer().isNot(AsmToken::EndOfStatement))
6426 return Error(L, "unexpected token in directive");
6431 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
6435 /// parseDirectiveThumbFunc
6436 /// ::= .thumbfunc symbol_name
6437 bool ARMAsmParser::parseDirectiveThumbFunc(SMLoc L) {
6438 const MCAsmInfo &MAI = getParser().getStreamer().getContext().getAsmInfo();
6439 bool isMachO = MAI.hasSubsectionsViaSymbols();
6441 bool needFuncName = true;
6443 // Darwin asm has (optionally) function name after .thumb_func direction
6446 const AsmToken &Tok = Parser.getTok();
6447 if (Tok.isNot(AsmToken::EndOfStatement)) {
6448 if (Tok.isNot(AsmToken::Identifier) && Tok.isNot(AsmToken::String))
6449 return Error(L, "unexpected token in .thumb_func directive");
6450 Name = Tok.getIdentifier();
6451 Parser.Lex(); // Consume the identifier token.
6452 needFuncName = false;
6456 if (getLexer().isNot(AsmToken::EndOfStatement))
6457 return Error(L, "unexpected token in directive");
6459 // Eat the end of statement and any blank lines that follow.
6460 while (getLexer().is(AsmToken::EndOfStatement))
6463 // FIXME: assuming function name will be the line following .thumb_func
6464 // We really should be checking the next symbol definition even if there's
6465 // stuff in between.
6467 Name = Parser.getTok().getIdentifier();
6470 // Mark symbol as a thumb symbol.
6471 MCSymbol *Func = getParser().getContext().GetOrCreateSymbol(Name);
6472 getParser().getStreamer().EmitThumbFunc(Func);
6476 /// parseDirectiveSyntax
6477 /// ::= .syntax unified | divided
6478 bool ARMAsmParser::parseDirectiveSyntax(SMLoc L) {
6479 const AsmToken &Tok = Parser.getTok();
6480 if (Tok.isNot(AsmToken::Identifier))
6481 return Error(L, "unexpected token in .syntax directive");
6482 StringRef Mode = Tok.getString();
6483 if (Mode == "unified" || Mode == "UNIFIED")
6485 else if (Mode == "divided" || Mode == "DIVIDED")
6486 return Error(L, "'.syntax divided' arm asssembly not supported");
6488 return Error(L, "unrecognized syntax mode in .syntax directive");
6490 if (getLexer().isNot(AsmToken::EndOfStatement))
6491 return Error(Parser.getTok().getLoc(), "unexpected token in directive");
6494 // TODO tell the MC streamer the mode
6495 // getParser().getStreamer().Emit???();
6499 /// parseDirectiveCode
6500 /// ::= .code 16 | 32
6501 bool ARMAsmParser::parseDirectiveCode(SMLoc L) {
6502 const AsmToken &Tok = Parser.getTok();
6503 if (Tok.isNot(AsmToken::Integer))
6504 return Error(L, "unexpected token in .code directive");
6505 int64_t Val = Parser.getTok().getIntVal();
6511 return Error(L, "invalid operand to .code directive");
6513 if (getLexer().isNot(AsmToken::EndOfStatement))
6514 return Error(Parser.getTok().getLoc(), "unexpected token in directive");
6520 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
6524 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
6530 /// parseDirectiveReq
6531 /// ::= name .req registername
6532 bool ARMAsmParser::parseDirectiveReq(StringRef Name, SMLoc L) {
6533 Parser.Lex(); // Eat the '.req' token.
6535 SMLoc SRegLoc, ERegLoc;
6536 if (ParseRegister(Reg, SRegLoc, ERegLoc)) {
6537 Parser.EatToEndOfStatement();
6538 return Error(SRegLoc, "register name expected");
6541 // Shouldn't be anything else.
6542 if (Parser.getTok().isNot(AsmToken::EndOfStatement)) {
6543 Parser.EatToEndOfStatement();
6544 return Error(Parser.getTok().getLoc(),
6545 "unexpected input in .req directive.");
6548 Parser.Lex(); // Consume the EndOfStatement
6550 if (RegisterReqs.GetOrCreateValue(Name, Reg).getValue() != Reg)
6551 return Error(SRegLoc, "redefinition of '" + Name +
6552 "' does not match original.");
6557 /// parseDirectiveUneq
6558 /// ::= .unreq registername
6559 bool ARMAsmParser::parseDirectiveUnreq(SMLoc L) {
6560 if (Parser.getTok().isNot(AsmToken::Identifier)) {
6561 Parser.EatToEndOfStatement();
6562 return Error(L, "unexpected input in .unreq directive.");
6564 RegisterReqs.erase(Parser.getTok().getIdentifier());
6565 Parser.Lex(); // Eat the identifier.
6569 /// parseDirectiveArch
6571 bool ARMAsmParser::parseDirectiveArch(SMLoc L) {
6575 /// parseDirectiveEabiAttr
6576 /// ::= .eabi_attribute int, int
6577 bool ARMAsmParser::parseDirectiveEabiAttr(SMLoc L) {
6581 extern "C" void LLVMInitializeARMAsmLexer();
6583 /// Force static initialization.
6584 extern "C" void LLVMInitializeARMAsmParser() {
6585 RegisterMCAsmParser<ARMAsmParser> X(TheARMTarget);
6586 RegisterMCAsmParser<ARMAsmParser> Y(TheThumbTarget);
6587 LLVMInitializeARMAsmLexer();
6590 #define GET_REGISTER_MATCHER
6591 #define GET_MATCHER_IMPLEMENTATION
6592 #include "ARMGenAsmMatcher.inc"