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 {
284 k_VectorListAllLanes,
290 k_BitfieldDescriptor,
294 SMLoc StartLoc, EndLoc;
295 SmallVector<unsigned, 8> Registers;
299 ARMCC::CondCodes Val;
319 ARM_PROC::IFlags Val;
335 // A vector register list is a sequential list of 1 to 4 registers.
351 /// Combined record for all forms of ARM address expressions.
354 // Offset is in OffsetReg or OffsetImm. If both are zero, no offset
356 const MCConstantExpr *OffsetImm; // Offset immediate value
357 unsigned OffsetRegNum; // Offset register num, when OffsetImm == NULL
358 ARM_AM::ShiftOpc ShiftType; // Shift type for OffsetReg
359 unsigned ShiftImm; // shift for OffsetReg.
360 unsigned Alignment; // 0 = no alignment specified
361 // n = alignment in bytes (2, 4, 8, 16, or 32)
362 unsigned isNegative : 1; // Negated OffsetReg? (~'U' bit)
368 ARM_AM::ShiftOpc ShiftTy;
377 ARM_AM::ShiftOpc ShiftTy;
383 ARM_AM::ShiftOpc ShiftTy;
396 ARMOperand(KindTy K) : MCParsedAsmOperand(), Kind(K) {}
398 ARMOperand(const ARMOperand &o) : MCParsedAsmOperand() {
400 StartLoc = o.StartLoc;
417 case k_DPRRegisterList:
418 case k_SPRRegisterList:
419 Registers = o.Registers;
422 case k_VectorListAllLanes:
423 case k_VectorListIndexed:
424 VectorList = o.VectorList;
431 CoprocOption = o.CoprocOption;
436 case k_MemBarrierOpt:
442 case k_PostIndexRegister:
443 PostIdxReg = o.PostIdxReg;
451 case k_ShifterImmediate:
452 ShifterImm = o.ShifterImm;
454 case k_ShiftedRegister:
455 RegShiftedReg = o.RegShiftedReg;
457 case k_ShiftedImmediate:
458 RegShiftedImm = o.RegShiftedImm;
460 case k_RotateImmediate:
463 case k_BitfieldDescriptor:
464 Bitfield = o.Bitfield;
467 VectorIndex = o.VectorIndex;
472 /// getStartLoc - Get the location of the first token of this operand.
473 SMLoc getStartLoc() const { return StartLoc; }
474 /// getEndLoc - Get the location of the last token of this operand.
475 SMLoc getEndLoc() const { return EndLoc; }
477 ARMCC::CondCodes getCondCode() const {
478 assert(Kind == k_CondCode && "Invalid access!");
482 unsigned getCoproc() const {
483 assert((Kind == k_CoprocNum || Kind == k_CoprocReg) && "Invalid access!");
487 StringRef getToken() const {
488 assert(Kind == k_Token && "Invalid access!");
489 return StringRef(Tok.Data, Tok.Length);
492 unsigned getReg() const {
493 assert((Kind == k_Register || Kind == k_CCOut) && "Invalid access!");
497 const SmallVectorImpl<unsigned> &getRegList() const {
498 assert((Kind == k_RegisterList || Kind == k_DPRRegisterList ||
499 Kind == k_SPRRegisterList) && "Invalid access!");
503 const MCExpr *getImm() const {
504 assert(isImm() && "Invalid access!");
508 unsigned getVectorIndex() const {
509 assert(Kind == k_VectorIndex && "Invalid access!");
510 return VectorIndex.Val;
513 ARM_MB::MemBOpt getMemBarrierOpt() const {
514 assert(Kind == k_MemBarrierOpt && "Invalid access!");
518 ARM_PROC::IFlags getProcIFlags() const {
519 assert(Kind == k_ProcIFlags && "Invalid access!");
523 unsigned getMSRMask() const {
524 assert(Kind == k_MSRMask && "Invalid access!");
528 bool isCoprocNum() const { return Kind == k_CoprocNum; }
529 bool isCoprocReg() const { return Kind == k_CoprocReg; }
530 bool isCoprocOption() const { return Kind == k_CoprocOption; }
531 bool isCondCode() const { return Kind == k_CondCode; }
532 bool isCCOut() const { return Kind == k_CCOut; }
533 bool isITMask() const { return Kind == k_ITCondMask; }
534 bool isITCondCode() const { return Kind == k_CondCode; }
535 bool isImm() const { return Kind == k_Immediate; }
536 bool isFPImm() const {
537 if (!isImm()) return false;
538 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
539 if (!CE) return false;
540 int Val = ARM_AM::getFP32Imm(APInt(32, CE->getValue()));
543 bool isFBits16() const {
544 if (!isImm()) return false;
545 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
546 if (!CE) return false;
547 int64_t Value = CE->getValue();
548 return Value >= 0 && Value <= 16;
550 bool isFBits32() 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 >= 1 && Value <= 32;
557 bool isImm8s4() 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 & 3) == 0) && Value >= -1020 && Value <= 1020;
564 bool isImm0_1020s4() 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 >= 0 && Value <= 1020;
571 bool isImm0_508s4() 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 <= 508;
578 bool isImm0_255() 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 >= 0 && Value < 256;
585 bool isImm0_1() 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 < 2;
592 bool isImm0_3() 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 < 4;
599 bool isImm0_7() 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 < 8;
606 bool isImm0_15() 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 < 16;
613 bool isImm0_31() 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 < 32;
620 bool isImm0_63() 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 < 64;
627 bool isImm8() 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();
634 bool isImm16() 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 isImm32() 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 isShrImm8() 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();
653 return Value > 0 && Value <= 8;
655 bool isShrImm16() 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 <= 16;
662 bool isShrImm32() 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 <= 32;
669 bool isShrImm64() 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 <= 64;
676 bool isImm1_7() 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 < 8;
683 bool isImm1_15() 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 < 16;
690 bool isImm1_31() 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 < 32;
697 bool isImm1_16() 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 < 17;
704 bool isImm1_32() 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 < 33;
711 bool isImm0_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_65535() 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 < 65536;
725 bool isImm0_65535Expr() const {
726 if (!isImm()) return false;
727 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
728 // If it's not a constant expression, it'll generate a fixup and be
730 if (!CE) return true;
731 int64_t Value = CE->getValue();
732 return Value >= 0 && Value < 65536;
734 bool isImm24bit() const {
735 if (!isImm()) return false;
736 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
737 if (!CE) return false;
738 int64_t Value = CE->getValue();
739 return Value >= 0 && Value <= 0xffffff;
741 bool isImmThumbSR() 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 < 33;
748 bool isPKHLSLImm() 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 < 32;
755 bool isPKHASRImm() 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 isARMSOImm() 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 ARM_AM::getSOImmVal(Value) != -1;
769 bool isARMSOImmNot() 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 isARMSOImmNeg() 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 isT2SOImm() 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::getT2SOImmVal(Value) != -1;
790 bool isT2SOImmNot() 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 isT2SOImmNeg() 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 isSetEndImm() 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 Value == 1 || Value == 0;
811 bool isReg() const { return Kind == k_Register; }
812 bool isRegList() const { return Kind == k_RegisterList; }
813 bool isDPRRegList() const { return Kind == k_DPRRegisterList; }
814 bool isSPRRegList() const { return Kind == k_SPRRegisterList; }
815 bool isToken() const { return Kind == k_Token; }
816 bool isMemBarrierOpt() const { return Kind == k_MemBarrierOpt; }
817 bool isMemory() const { return Kind == k_Memory; }
818 bool isShifterImm() const { return Kind == k_ShifterImmediate; }
819 bool isRegShiftedReg() const { return Kind == k_ShiftedRegister; }
820 bool isRegShiftedImm() const { return Kind == k_ShiftedImmediate; }
821 bool isRotImm() const { return Kind == k_RotateImmediate; }
822 bool isBitfield() const { return Kind == k_BitfieldDescriptor; }
823 bool isPostIdxRegShifted() const { return Kind == k_PostIndexRegister; }
824 bool isPostIdxReg() const {
825 return Kind == k_PostIndexRegister && PostIdxReg.ShiftTy ==ARM_AM::no_shift;
827 bool isMemNoOffset(bool alignOK = false) const {
830 // No offset of any kind.
831 return Memory.OffsetRegNum == 0 && Memory.OffsetImm == 0 &&
832 (alignOK || Memory.Alignment == 0);
834 bool isMemPCRelImm12() const {
835 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
837 // Base register must be PC.
838 if (Memory.BaseRegNum != ARM::PC)
840 // Immediate offset in range [-4095, 4095].
841 if (!Memory.OffsetImm) return true;
842 int64_t Val = Memory.OffsetImm->getValue();
843 return (Val > -4096 && Val < 4096) || (Val == INT32_MIN);
845 bool isAlignedMemory() const {
846 return isMemNoOffset(true);
848 bool isAddrMode2() const {
849 if (!isMemory() || Memory.Alignment != 0) return false;
850 // Check for register offset.
851 if (Memory.OffsetRegNum) return true;
852 // Immediate offset in range [-4095, 4095].
853 if (!Memory.OffsetImm) return true;
854 int64_t Val = Memory.OffsetImm->getValue();
855 return Val > -4096 && Val < 4096;
857 bool isAM2OffsetImm() const {
858 if (!isImm()) return false;
859 // Immediate offset in range [-4095, 4095].
860 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
861 if (!CE) return false;
862 int64_t Val = CE->getValue();
863 return Val > -4096 && Val < 4096;
865 bool isAddrMode3() const {
866 // If we have an immediate that's not a constant, treat it as a label
867 // reference needing a fixup. If it is a constant, it's something else
869 if (isImm() && !isa<MCConstantExpr>(getImm()))
871 if (!isMemory() || Memory.Alignment != 0) return false;
872 // No shifts are legal for AM3.
873 if (Memory.ShiftType != ARM_AM::no_shift) return false;
874 // Check for register offset.
875 if (Memory.OffsetRegNum) return true;
876 // Immediate offset in range [-255, 255].
877 if (!Memory.OffsetImm) return true;
878 int64_t Val = Memory.OffsetImm->getValue();
879 return Val > -256 && Val < 256;
881 bool isAM3Offset() const {
882 if (Kind != k_Immediate && Kind != k_PostIndexRegister)
884 if (Kind == k_PostIndexRegister)
885 return PostIdxReg.ShiftTy == ARM_AM::no_shift;
886 // Immediate offset in range [-255, 255].
887 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
888 if (!CE) return false;
889 int64_t Val = CE->getValue();
890 // Special case, #-0 is INT32_MIN.
891 return (Val > -256 && Val < 256) || Val == INT32_MIN;
893 bool isAddrMode5() const {
894 // If we have an immediate that's not a constant, treat it as a label
895 // reference needing a fixup. If it is a constant, it's something else
897 if (isImm() && !isa<MCConstantExpr>(getImm()))
899 if (!isMemory() || Memory.Alignment != 0) return false;
900 // Check for register offset.
901 if (Memory.OffsetRegNum) return false;
902 // Immediate offset in range [-1020, 1020] and a multiple of 4.
903 if (!Memory.OffsetImm) return true;
904 int64_t Val = Memory.OffsetImm->getValue();
905 return (Val >= -1020 && Val <= 1020 && ((Val & 3) == 0)) ||
908 bool isMemTBB() const {
909 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
910 Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0)
914 bool isMemTBH() const {
915 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
916 Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm != 1 ||
917 Memory.Alignment != 0 )
921 bool isMemRegOffset() const {
922 if (!isMemory() || !Memory.OffsetRegNum || Memory.Alignment != 0)
926 bool isT2MemRegOffset() const {
927 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
928 Memory.Alignment != 0)
930 // Only lsl #{0, 1, 2, 3} allowed.
931 if (Memory.ShiftType == ARM_AM::no_shift)
933 if (Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm > 3)
937 bool isMemThumbRR() const {
938 // Thumb reg+reg addressing is simple. Just two registers, a base and
939 // an offset. No shifts, negations or any other complicating factors.
940 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
941 Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0)
943 return isARMLowRegister(Memory.BaseRegNum) &&
944 (!Memory.OffsetRegNum || isARMLowRegister(Memory.OffsetRegNum));
946 bool isMemThumbRIs4() const {
947 if (!isMemory() || Memory.OffsetRegNum != 0 ||
948 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
950 // Immediate offset, multiple of 4 in range [0, 124].
951 if (!Memory.OffsetImm) return true;
952 int64_t Val = Memory.OffsetImm->getValue();
953 return Val >= 0 && Val <= 124 && (Val % 4) == 0;
955 bool isMemThumbRIs2() const {
956 if (!isMemory() || Memory.OffsetRegNum != 0 ||
957 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
959 // Immediate offset, multiple of 4 in range [0, 62].
960 if (!Memory.OffsetImm) return true;
961 int64_t Val = Memory.OffsetImm->getValue();
962 return Val >= 0 && Val <= 62 && (Val % 2) == 0;
964 bool isMemThumbRIs1() const {
965 if (!isMemory() || Memory.OffsetRegNum != 0 ||
966 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
968 // Immediate offset in range [0, 31].
969 if (!Memory.OffsetImm) return true;
970 int64_t Val = Memory.OffsetImm->getValue();
971 return Val >= 0 && Val <= 31;
973 bool isMemThumbSPI() const {
974 if (!isMemory() || Memory.OffsetRegNum != 0 ||
975 Memory.BaseRegNum != ARM::SP || Memory.Alignment != 0)
977 // Immediate offset, multiple of 4 in range [0, 1020].
978 if (!Memory.OffsetImm) return true;
979 int64_t Val = Memory.OffsetImm->getValue();
980 return Val >= 0 && Val <= 1020 && (Val % 4) == 0;
982 bool isMemImm8s4Offset() const {
983 // If we have an immediate that's not a constant, treat it as a label
984 // reference needing a fixup. If it is a constant, it's something else
986 if (isImm() && !isa<MCConstantExpr>(getImm()))
988 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
990 // Immediate offset a multiple of 4 in range [-1020, 1020].
991 if (!Memory.OffsetImm) return true;
992 int64_t Val = Memory.OffsetImm->getValue();
993 return Val >= -1020 && Val <= 1020 && (Val & 3) == 0;
995 bool isMemImm0_1020s4Offset() const {
996 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
998 // Immediate offset a multiple of 4 in range [0, 1020].
999 if (!Memory.OffsetImm) return true;
1000 int64_t Val = Memory.OffsetImm->getValue();
1001 return Val >= 0 && Val <= 1020 && (Val & 3) == 0;
1003 bool isMemImm8Offset() const {
1004 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1006 // Base reg of PC isn't allowed for these encodings.
1007 if (Memory.BaseRegNum == ARM::PC) return false;
1008 // Immediate offset in range [-255, 255].
1009 if (!Memory.OffsetImm) return true;
1010 int64_t Val = Memory.OffsetImm->getValue();
1011 return (Val == INT32_MIN) || (Val > -256 && Val < 256);
1013 bool isMemPosImm8Offset() const {
1014 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1016 // Immediate offset in range [0, 255].
1017 if (!Memory.OffsetImm) return true;
1018 int64_t Val = Memory.OffsetImm->getValue();
1019 return Val >= 0 && Val < 256;
1021 bool isMemNegImm8Offset() const {
1022 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1024 // Base reg of PC isn't allowed for these encodings.
1025 if (Memory.BaseRegNum == ARM::PC) return false;
1026 // Immediate offset in range [-255, -1].
1027 if (!Memory.OffsetImm) return false;
1028 int64_t Val = Memory.OffsetImm->getValue();
1029 return (Val == INT32_MIN) || (Val > -256 && Val < 0);
1031 bool isMemUImm12Offset() const {
1032 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1034 // Immediate offset in range [0, 4095].
1035 if (!Memory.OffsetImm) return true;
1036 int64_t Val = Memory.OffsetImm->getValue();
1037 return (Val >= 0 && Val < 4096);
1039 bool isMemImm12Offset() const {
1040 // If we have an immediate that's not a constant, treat it as a label
1041 // reference needing a fixup. If it is a constant, it's something else
1042 // and we reject it.
1043 if (isImm() && !isa<MCConstantExpr>(getImm()))
1046 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1048 // Immediate offset in range [-4095, 4095].
1049 if (!Memory.OffsetImm) return true;
1050 int64_t Val = Memory.OffsetImm->getValue();
1051 return (Val > -4096 && Val < 4096) || (Val == INT32_MIN);
1053 bool isPostIdxImm8() const {
1054 if (!isImm()) return false;
1055 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1056 if (!CE) return false;
1057 int64_t Val = CE->getValue();
1058 return (Val > -256 && Val < 256) || (Val == INT32_MIN);
1060 bool isPostIdxImm8s4() const {
1061 if (!isImm()) return false;
1062 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1063 if (!CE) return false;
1064 int64_t Val = CE->getValue();
1065 return ((Val & 3) == 0 && Val >= -1020 && Val <= 1020) ||
1069 bool isMSRMask() const { return Kind == k_MSRMask; }
1070 bool isProcIFlags() const { return Kind == k_ProcIFlags; }
1073 bool isSingleSpacedVectorList() const {
1074 return Kind == k_VectorList && !VectorList.isDoubleSpaced;
1076 bool isDoubleSpacedVectorList() const {
1077 return Kind == k_VectorList && VectorList.isDoubleSpaced;
1079 bool isVecListOneD() const {
1080 if (!isSingleSpacedVectorList()) return false;
1081 return VectorList.Count == 1;
1084 bool isVecListTwoD() const {
1085 if (!isSingleSpacedVectorList()) return false;
1086 return VectorList.Count == 2;
1089 bool isVecListThreeD() const {
1090 if (!isSingleSpacedVectorList()) return false;
1091 return VectorList.Count == 3;
1094 bool isVecListFourD() const {
1095 if (!isSingleSpacedVectorList()) return false;
1096 return VectorList.Count == 4;
1099 bool isVecListTwoQ() const {
1100 if (!isDoubleSpacedVectorList()) return false;
1101 return VectorList.Count == 2;
1104 bool isSingleSpacedVectorAllLanes() const {
1105 return Kind == k_VectorListAllLanes && !VectorList.isDoubleSpaced;
1107 bool isDoubleSpacedVectorAllLanes() const {
1108 return Kind == k_VectorListAllLanes && VectorList.isDoubleSpaced;
1110 bool isVecListOneDAllLanes() const {
1111 if (!isSingleSpacedVectorAllLanes()) return false;
1112 return VectorList.Count == 1;
1115 bool isVecListTwoDAllLanes() const {
1116 if (!isSingleSpacedVectorAllLanes()) return false;
1117 return VectorList.Count == 2;
1120 bool isVecListTwoQAllLanes() const {
1121 if (!isDoubleSpacedVectorAllLanes()) return false;
1122 return VectorList.Count == 2;
1125 bool isSingleSpacedVectorIndexed() const {
1126 return Kind == k_VectorListIndexed && !VectorList.isDoubleSpaced;
1128 bool isDoubleSpacedVectorIndexed() const {
1129 return Kind == k_VectorListIndexed && VectorList.isDoubleSpaced;
1131 bool isVecListOneDByteIndexed() const {
1132 if (!isSingleSpacedVectorIndexed()) return false;
1133 return VectorList.Count == 1 && VectorList.LaneIndex <= 7;
1136 bool isVecListOneDHWordIndexed() const {
1137 if (!isSingleSpacedVectorIndexed()) return false;
1138 return VectorList.Count == 1 && VectorList.LaneIndex <= 3;
1141 bool isVecListOneDWordIndexed() const {
1142 if (!isSingleSpacedVectorIndexed()) return false;
1143 return VectorList.Count == 1 && VectorList.LaneIndex <= 1;
1146 bool isVecListTwoDByteIndexed() const {
1147 if (!isSingleSpacedVectorIndexed()) return false;
1148 return VectorList.Count == 2 && VectorList.LaneIndex <= 7;
1151 bool isVecListTwoDHWordIndexed() const {
1152 if (!isSingleSpacedVectorIndexed()) return false;
1153 return VectorList.Count == 2 && VectorList.LaneIndex <= 3;
1156 bool isVecListTwoQWordIndexed() const {
1157 if (!isDoubleSpacedVectorIndexed()) return false;
1158 return VectorList.Count == 2 && VectorList.LaneIndex <= 1;
1161 bool isVecListTwoQHWordIndexed() const {
1162 if (!isDoubleSpacedVectorIndexed()) return false;
1163 return VectorList.Count == 2 && VectorList.LaneIndex <= 3;
1166 bool isVecListTwoDWordIndexed() const {
1167 if (!isSingleSpacedVectorIndexed()) return false;
1168 return VectorList.Count == 2 && VectorList.LaneIndex <= 1;
1171 bool isVectorIndex8() const {
1172 if (Kind != k_VectorIndex) return false;
1173 return VectorIndex.Val < 8;
1175 bool isVectorIndex16() const {
1176 if (Kind != k_VectorIndex) return false;
1177 return VectorIndex.Val < 4;
1179 bool isVectorIndex32() const {
1180 if (Kind != k_VectorIndex) return false;
1181 return VectorIndex.Val < 2;
1184 bool isNEONi8splat() const {
1185 if (!isImm()) return false;
1186 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1187 // Must be a constant.
1188 if (!CE) return false;
1189 int64_t Value = CE->getValue();
1190 // i8 value splatted across 8 bytes. The immediate is just the 8 byte
1192 return Value >= 0 && Value < 256;
1195 bool isNEONi16splat() const {
1196 if (!isImm()) return false;
1197 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1198 // Must be a constant.
1199 if (!CE) return false;
1200 int64_t Value = CE->getValue();
1201 // i16 value in the range [0,255] or [0x0100, 0xff00]
1202 return (Value >= 0 && Value < 256) || (Value >= 0x0100 && Value <= 0xff00);
1205 bool isNEONi32splat() const {
1206 if (!isImm()) return false;
1207 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1208 // Must be a constant.
1209 if (!CE) return false;
1210 int64_t Value = CE->getValue();
1211 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X.
1212 return (Value >= 0 && Value < 256) ||
1213 (Value >= 0x0100 && Value <= 0xff00) ||
1214 (Value >= 0x010000 && Value <= 0xff0000) ||
1215 (Value >= 0x01000000 && Value <= 0xff000000);
1218 bool isNEONi32vmov() const {
1219 if (!isImm()) return false;
1220 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1221 // Must be a constant.
1222 if (!CE) return false;
1223 int64_t Value = CE->getValue();
1224 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X,
1225 // for VMOV/VMVN only, 00Xf or 0Xff are also accepted.
1226 return (Value >= 0 && Value < 256) ||
1227 (Value >= 0x0100 && Value <= 0xff00) ||
1228 (Value >= 0x010000 && Value <= 0xff0000) ||
1229 (Value >= 0x01000000 && Value <= 0xff000000) ||
1230 (Value >= 0x01ff && Value <= 0xffff && (Value & 0xff) == 0xff) ||
1231 (Value >= 0x01ffff && Value <= 0xffffff && (Value & 0xffff) == 0xffff);
1233 bool isNEONi32vmovNeg() const {
1234 if (!isImm()) return false;
1235 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1236 // Must be a constant.
1237 if (!CE) return false;
1238 int64_t Value = ~CE->getValue();
1239 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X,
1240 // for VMOV/VMVN only, 00Xf or 0Xff are also accepted.
1241 return (Value >= 0 && Value < 256) ||
1242 (Value >= 0x0100 && Value <= 0xff00) ||
1243 (Value >= 0x010000 && Value <= 0xff0000) ||
1244 (Value >= 0x01000000 && Value <= 0xff000000) ||
1245 (Value >= 0x01ff && Value <= 0xffff && (Value & 0xff) == 0xff) ||
1246 (Value >= 0x01ffff && Value <= 0xffffff && (Value & 0xffff) == 0xffff);
1249 bool isNEONi64splat() const {
1250 if (!isImm()) return false;
1251 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1252 // Must be a constant.
1253 if (!CE) return false;
1254 uint64_t Value = CE->getValue();
1255 // i64 value with each byte being either 0 or 0xff.
1256 for (unsigned i = 0; i < 8; ++i)
1257 if ((Value & 0xff) != 0 && (Value & 0xff) != 0xff) return false;
1261 void addExpr(MCInst &Inst, const MCExpr *Expr) const {
1262 // Add as immediates when possible. Null MCExpr = 0.
1264 Inst.addOperand(MCOperand::CreateImm(0));
1265 else if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr))
1266 Inst.addOperand(MCOperand::CreateImm(CE->getValue()));
1268 Inst.addOperand(MCOperand::CreateExpr(Expr));
1271 void addCondCodeOperands(MCInst &Inst, unsigned N) const {
1272 assert(N == 2 && "Invalid number of operands!");
1273 Inst.addOperand(MCOperand::CreateImm(unsigned(getCondCode())));
1274 unsigned RegNum = getCondCode() == ARMCC::AL ? 0: ARM::CPSR;
1275 Inst.addOperand(MCOperand::CreateReg(RegNum));
1278 void addCoprocNumOperands(MCInst &Inst, unsigned N) const {
1279 assert(N == 1 && "Invalid number of operands!");
1280 Inst.addOperand(MCOperand::CreateImm(getCoproc()));
1283 void addCoprocRegOperands(MCInst &Inst, unsigned N) const {
1284 assert(N == 1 && "Invalid number of operands!");
1285 Inst.addOperand(MCOperand::CreateImm(getCoproc()));
1288 void addCoprocOptionOperands(MCInst &Inst, unsigned N) const {
1289 assert(N == 1 && "Invalid number of operands!");
1290 Inst.addOperand(MCOperand::CreateImm(CoprocOption.Val));
1293 void addITMaskOperands(MCInst &Inst, unsigned N) const {
1294 assert(N == 1 && "Invalid number of operands!");
1295 Inst.addOperand(MCOperand::CreateImm(ITMask.Mask));
1298 void addITCondCodeOperands(MCInst &Inst, unsigned N) const {
1299 assert(N == 1 && "Invalid number of operands!");
1300 Inst.addOperand(MCOperand::CreateImm(unsigned(getCondCode())));
1303 void addCCOutOperands(MCInst &Inst, unsigned N) const {
1304 assert(N == 1 && "Invalid number of operands!");
1305 Inst.addOperand(MCOperand::CreateReg(getReg()));
1308 void addRegOperands(MCInst &Inst, unsigned N) const {
1309 assert(N == 1 && "Invalid number of operands!");
1310 Inst.addOperand(MCOperand::CreateReg(getReg()));
1313 void addRegShiftedRegOperands(MCInst &Inst, unsigned N) const {
1314 assert(N == 3 && "Invalid number of operands!");
1315 assert(isRegShiftedReg() &&
1316 "addRegShiftedRegOperands() on non RegShiftedReg!");
1317 Inst.addOperand(MCOperand::CreateReg(RegShiftedReg.SrcReg));
1318 Inst.addOperand(MCOperand::CreateReg(RegShiftedReg.ShiftReg));
1319 Inst.addOperand(MCOperand::CreateImm(
1320 ARM_AM::getSORegOpc(RegShiftedReg.ShiftTy, RegShiftedReg.ShiftImm)));
1323 void addRegShiftedImmOperands(MCInst &Inst, unsigned N) const {
1324 assert(N == 2 && "Invalid number of operands!");
1325 assert(isRegShiftedImm() &&
1326 "addRegShiftedImmOperands() on non RegShiftedImm!");
1327 Inst.addOperand(MCOperand::CreateReg(RegShiftedImm.SrcReg));
1328 Inst.addOperand(MCOperand::CreateImm(
1329 ARM_AM::getSORegOpc(RegShiftedImm.ShiftTy, RegShiftedImm.ShiftImm)));
1332 void addShifterImmOperands(MCInst &Inst, unsigned N) const {
1333 assert(N == 1 && "Invalid number of operands!");
1334 Inst.addOperand(MCOperand::CreateImm((ShifterImm.isASR << 5) |
1338 void addRegListOperands(MCInst &Inst, unsigned N) const {
1339 assert(N == 1 && "Invalid number of operands!");
1340 const SmallVectorImpl<unsigned> &RegList = getRegList();
1341 for (SmallVectorImpl<unsigned>::const_iterator
1342 I = RegList.begin(), E = RegList.end(); I != E; ++I)
1343 Inst.addOperand(MCOperand::CreateReg(*I));
1346 void addDPRRegListOperands(MCInst &Inst, unsigned N) const {
1347 addRegListOperands(Inst, N);
1350 void addSPRRegListOperands(MCInst &Inst, unsigned N) const {
1351 addRegListOperands(Inst, N);
1354 void addRotImmOperands(MCInst &Inst, unsigned N) const {
1355 assert(N == 1 && "Invalid number of operands!");
1356 // Encoded as val>>3. The printer handles display as 8, 16, 24.
1357 Inst.addOperand(MCOperand::CreateImm(RotImm.Imm >> 3));
1360 void addBitfieldOperands(MCInst &Inst, unsigned N) const {
1361 assert(N == 1 && "Invalid number of operands!");
1362 // Munge the lsb/width into a bitfield mask.
1363 unsigned lsb = Bitfield.LSB;
1364 unsigned width = Bitfield.Width;
1365 // Make a 32-bit mask w/ the referenced bits clear and all other bits set.
1366 uint32_t Mask = ~(((uint32_t)0xffffffff >> lsb) << (32 - width) >>
1367 (32 - (lsb + width)));
1368 Inst.addOperand(MCOperand::CreateImm(Mask));
1371 void addImmOperands(MCInst &Inst, unsigned N) const {
1372 assert(N == 1 && "Invalid number of operands!");
1373 addExpr(Inst, getImm());
1376 void addFBits16Operands(MCInst &Inst, unsigned N) const {
1377 assert(N == 1 && "Invalid number of operands!");
1378 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1379 Inst.addOperand(MCOperand::CreateImm(16 - CE->getValue()));
1382 void addFBits32Operands(MCInst &Inst, unsigned N) const {
1383 assert(N == 1 && "Invalid number of operands!");
1384 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1385 Inst.addOperand(MCOperand::CreateImm(32 - CE->getValue()));
1388 void addFPImmOperands(MCInst &Inst, unsigned N) const {
1389 assert(N == 1 && "Invalid number of operands!");
1390 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1391 int Val = ARM_AM::getFP32Imm(APInt(32, CE->getValue()));
1392 Inst.addOperand(MCOperand::CreateImm(Val));
1395 void addImm8s4Operands(MCInst &Inst, unsigned N) const {
1396 assert(N == 1 && "Invalid number of operands!");
1397 // FIXME: We really want to scale the value here, but the LDRD/STRD
1398 // instruction don't encode operands that way yet.
1399 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1400 Inst.addOperand(MCOperand::CreateImm(CE->getValue()));
1403 void addImm0_1020s4Operands(MCInst &Inst, unsigned N) const {
1404 assert(N == 1 && "Invalid number of operands!");
1405 // The immediate is scaled by four in the encoding and is stored
1406 // in the MCInst as such. Lop off the low two bits here.
1407 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1408 Inst.addOperand(MCOperand::CreateImm(CE->getValue() / 4));
1411 void addImm0_508s4Operands(MCInst &Inst, unsigned N) const {
1412 assert(N == 1 && "Invalid number of operands!");
1413 // The immediate is scaled by four in the encoding and is stored
1414 // in the MCInst as such. Lop off the low two bits here.
1415 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1416 Inst.addOperand(MCOperand::CreateImm(CE->getValue() / 4));
1419 void addImm1_16Operands(MCInst &Inst, unsigned N) const {
1420 assert(N == 1 && "Invalid number of operands!");
1421 // The constant encodes as the immediate-1, and we store in the instruction
1422 // the bits as encoded, so subtract off one here.
1423 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1424 Inst.addOperand(MCOperand::CreateImm(CE->getValue() - 1));
1427 void addImm1_32Operands(MCInst &Inst, unsigned N) const {
1428 assert(N == 1 && "Invalid number of operands!");
1429 // The constant encodes as the immediate-1, and we store in the instruction
1430 // the bits as encoded, so subtract off one here.
1431 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1432 Inst.addOperand(MCOperand::CreateImm(CE->getValue() - 1));
1435 void addImmThumbSROperands(MCInst &Inst, unsigned N) const {
1436 assert(N == 1 && "Invalid number of operands!");
1437 // The constant encodes as the immediate, except for 32, which encodes as
1439 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1440 unsigned Imm = CE->getValue();
1441 Inst.addOperand(MCOperand::CreateImm((Imm == 32 ? 0 : Imm)));
1444 void addPKHASRImmOperands(MCInst &Inst, unsigned N) const {
1445 assert(N == 1 && "Invalid number of operands!");
1446 // An ASR value of 32 encodes as 0, so that's how we want to add it to
1447 // the instruction as well.
1448 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1449 int Val = CE->getValue();
1450 Inst.addOperand(MCOperand::CreateImm(Val == 32 ? 0 : Val));
1453 void addT2SOImmNotOperands(MCInst &Inst, unsigned N) const {
1454 assert(N == 1 && "Invalid number of operands!");
1455 // The operand is actually a t2_so_imm, but we have its bitwise
1456 // negation in the assembly source, so twiddle it here.
1457 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1458 Inst.addOperand(MCOperand::CreateImm(~CE->getValue()));
1461 void addT2SOImmNegOperands(MCInst &Inst, unsigned N) const {
1462 assert(N == 1 && "Invalid number of operands!");
1463 // The operand is actually a t2_so_imm, but we have its
1464 // negation in the assembly source, so twiddle it here.
1465 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1466 Inst.addOperand(MCOperand::CreateImm(-CE->getValue()));
1469 void addARMSOImmNotOperands(MCInst &Inst, unsigned N) const {
1470 assert(N == 1 && "Invalid number of operands!");
1471 // The operand is actually a so_imm, but we have its bitwise
1472 // negation in the assembly source, so twiddle it here.
1473 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1474 Inst.addOperand(MCOperand::CreateImm(~CE->getValue()));
1477 void addARMSOImmNegOperands(MCInst &Inst, unsigned N) const {
1478 assert(N == 1 && "Invalid number of operands!");
1479 // The operand is actually a so_imm, but we have its
1480 // negation in the assembly source, so twiddle it here.
1481 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1482 Inst.addOperand(MCOperand::CreateImm(-CE->getValue()));
1485 void addMemBarrierOptOperands(MCInst &Inst, unsigned N) const {
1486 assert(N == 1 && "Invalid number of operands!");
1487 Inst.addOperand(MCOperand::CreateImm(unsigned(getMemBarrierOpt())));
1490 void addMemNoOffsetOperands(MCInst &Inst, unsigned N) const {
1491 assert(N == 1 && "Invalid number of operands!");
1492 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1495 void addMemPCRelImm12Operands(MCInst &Inst, unsigned N) const {
1496 assert(N == 1 && "Invalid number of operands!");
1497 int32_t Imm = Memory.OffsetImm->getValue();
1498 // FIXME: Handle #-0
1499 if (Imm == INT32_MIN) Imm = 0;
1500 Inst.addOperand(MCOperand::CreateImm(Imm));
1503 void addAlignedMemoryOperands(MCInst &Inst, unsigned N) const {
1504 assert(N == 2 && "Invalid number of operands!");
1505 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1506 Inst.addOperand(MCOperand::CreateImm(Memory.Alignment));
1509 void addAddrMode2Operands(MCInst &Inst, unsigned N) const {
1510 assert(N == 3 && "Invalid number of operands!");
1511 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1512 if (!Memory.OffsetRegNum) {
1513 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1514 // Special case for #-0
1515 if (Val == INT32_MIN) Val = 0;
1516 if (Val < 0) Val = -Val;
1517 Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift);
1519 // For register offset, we encode the shift type and negation flag
1521 Val = ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add,
1522 Memory.ShiftImm, Memory.ShiftType);
1524 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1525 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1526 Inst.addOperand(MCOperand::CreateImm(Val));
1529 void addAM2OffsetImmOperands(MCInst &Inst, unsigned N) const {
1530 assert(N == 2 && "Invalid number of operands!");
1531 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1532 assert(CE && "non-constant AM2OffsetImm operand!");
1533 int32_t Val = CE->getValue();
1534 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1535 // Special case for #-0
1536 if (Val == INT32_MIN) Val = 0;
1537 if (Val < 0) Val = -Val;
1538 Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift);
1539 Inst.addOperand(MCOperand::CreateReg(0));
1540 Inst.addOperand(MCOperand::CreateImm(Val));
1543 void addAddrMode3Operands(MCInst &Inst, unsigned N) const {
1544 assert(N == 3 && "Invalid number of operands!");
1545 // If we have an immediate that's not a constant, treat it as a label
1546 // reference needing a fixup. If it is a constant, it's something else
1547 // and we reject it.
1549 Inst.addOperand(MCOperand::CreateExpr(getImm()));
1550 Inst.addOperand(MCOperand::CreateReg(0));
1551 Inst.addOperand(MCOperand::CreateImm(0));
1555 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1556 if (!Memory.OffsetRegNum) {
1557 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1558 // Special case for #-0
1559 if (Val == INT32_MIN) Val = 0;
1560 if (Val < 0) Val = -Val;
1561 Val = ARM_AM::getAM3Opc(AddSub, Val);
1563 // For register offset, we encode the shift type and negation flag
1565 Val = ARM_AM::getAM3Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add, 0);
1567 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1568 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1569 Inst.addOperand(MCOperand::CreateImm(Val));
1572 void addAM3OffsetOperands(MCInst &Inst, unsigned N) const {
1573 assert(N == 2 && "Invalid number of operands!");
1574 if (Kind == k_PostIndexRegister) {
1576 ARM_AM::getAM3Opc(PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub, 0);
1577 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
1578 Inst.addOperand(MCOperand::CreateImm(Val));
1583 const MCConstantExpr *CE = static_cast<const MCConstantExpr*>(getImm());
1584 int32_t Val = CE->getValue();
1585 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1586 // Special case for #-0
1587 if (Val == INT32_MIN) Val = 0;
1588 if (Val < 0) Val = -Val;
1589 Val = ARM_AM::getAM3Opc(AddSub, Val);
1590 Inst.addOperand(MCOperand::CreateReg(0));
1591 Inst.addOperand(MCOperand::CreateImm(Val));
1594 void addAddrMode5Operands(MCInst &Inst, unsigned N) const {
1595 assert(N == 2 && "Invalid number of operands!");
1596 // If we have an immediate that's not a constant, treat it as a label
1597 // reference needing a fixup. If it is a constant, it's something else
1598 // and we reject it.
1600 Inst.addOperand(MCOperand::CreateExpr(getImm()));
1601 Inst.addOperand(MCOperand::CreateImm(0));
1605 // The lower two bits are always zero and as such are not encoded.
1606 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0;
1607 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1608 // Special case for #-0
1609 if (Val == INT32_MIN) Val = 0;
1610 if (Val < 0) Val = -Val;
1611 Val = ARM_AM::getAM5Opc(AddSub, Val);
1612 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1613 Inst.addOperand(MCOperand::CreateImm(Val));
1616 void addMemImm8s4OffsetOperands(MCInst &Inst, unsigned N) const {
1617 assert(N == 2 && "Invalid number of operands!");
1618 // If we have an immediate that's not a constant, treat it as a label
1619 // reference needing a fixup. If it is a constant, it's something else
1620 // and we reject it.
1622 Inst.addOperand(MCOperand::CreateExpr(getImm()));
1623 Inst.addOperand(MCOperand::CreateImm(0));
1627 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1628 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1629 Inst.addOperand(MCOperand::CreateImm(Val));
1632 void addMemImm0_1020s4OffsetOperands(MCInst &Inst, unsigned N) const {
1633 assert(N == 2 && "Invalid number of operands!");
1634 // The lower two bits are always zero and as such are not encoded.
1635 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0;
1636 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1637 Inst.addOperand(MCOperand::CreateImm(Val));
1640 void addMemImm8OffsetOperands(MCInst &Inst, unsigned N) const {
1641 assert(N == 2 && "Invalid number of operands!");
1642 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1643 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1644 Inst.addOperand(MCOperand::CreateImm(Val));
1647 void addMemPosImm8OffsetOperands(MCInst &Inst, unsigned N) const {
1648 addMemImm8OffsetOperands(Inst, N);
1651 void addMemNegImm8OffsetOperands(MCInst &Inst, unsigned N) const {
1652 addMemImm8OffsetOperands(Inst, N);
1655 void addMemUImm12OffsetOperands(MCInst &Inst, unsigned N) const {
1656 assert(N == 2 && "Invalid number of operands!");
1657 // If this is an immediate, it's a label reference.
1659 addExpr(Inst, getImm());
1660 Inst.addOperand(MCOperand::CreateImm(0));
1664 // Otherwise, it's a normal memory reg+offset.
1665 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1666 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1667 Inst.addOperand(MCOperand::CreateImm(Val));
1670 void addMemImm12OffsetOperands(MCInst &Inst, unsigned N) const {
1671 assert(N == 2 && "Invalid number of operands!");
1672 // If this is an immediate, it's a label reference.
1674 addExpr(Inst, getImm());
1675 Inst.addOperand(MCOperand::CreateImm(0));
1679 // Otherwise, it's a normal memory reg+offset.
1680 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1681 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1682 Inst.addOperand(MCOperand::CreateImm(Val));
1685 void addMemTBBOperands(MCInst &Inst, unsigned N) const {
1686 assert(N == 2 && "Invalid number of operands!");
1687 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1688 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1691 void addMemTBHOperands(MCInst &Inst, unsigned N) const {
1692 assert(N == 2 && "Invalid number of operands!");
1693 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1694 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1697 void addMemRegOffsetOperands(MCInst &Inst, unsigned N) const {
1698 assert(N == 3 && "Invalid number of operands!");
1700 ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add,
1701 Memory.ShiftImm, Memory.ShiftType);
1702 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1703 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1704 Inst.addOperand(MCOperand::CreateImm(Val));
1707 void addT2MemRegOffsetOperands(MCInst &Inst, unsigned N) const {
1708 assert(N == 3 && "Invalid number of operands!");
1709 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1710 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1711 Inst.addOperand(MCOperand::CreateImm(Memory.ShiftImm));
1714 void addMemThumbRROperands(MCInst &Inst, unsigned N) const {
1715 assert(N == 2 && "Invalid number of operands!");
1716 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1717 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1720 void addMemThumbRIs4Operands(MCInst &Inst, unsigned N) const {
1721 assert(N == 2 && "Invalid number of operands!");
1722 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0;
1723 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1724 Inst.addOperand(MCOperand::CreateImm(Val));
1727 void addMemThumbRIs2Operands(MCInst &Inst, unsigned N) const {
1728 assert(N == 2 && "Invalid number of operands!");
1729 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 2) : 0;
1730 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1731 Inst.addOperand(MCOperand::CreateImm(Val));
1734 void addMemThumbRIs1Operands(MCInst &Inst, unsigned N) const {
1735 assert(N == 2 && "Invalid number of operands!");
1736 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue()) : 0;
1737 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1738 Inst.addOperand(MCOperand::CreateImm(Val));
1741 void addMemThumbSPIOperands(MCInst &Inst, unsigned N) const {
1742 assert(N == 2 && "Invalid number of operands!");
1743 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0;
1744 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1745 Inst.addOperand(MCOperand::CreateImm(Val));
1748 void addPostIdxImm8Operands(MCInst &Inst, unsigned N) const {
1749 assert(N == 1 && "Invalid number of operands!");
1750 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1751 assert(CE && "non-constant post-idx-imm8 operand!");
1752 int Imm = CE->getValue();
1753 bool isAdd = Imm >= 0;
1754 if (Imm == INT32_MIN) Imm = 0;
1755 Imm = (Imm < 0 ? -Imm : Imm) | (int)isAdd << 8;
1756 Inst.addOperand(MCOperand::CreateImm(Imm));
1759 void addPostIdxImm8s4Operands(MCInst &Inst, unsigned N) const {
1760 assert(N == 1 && "Invalid number of operands!");
1761 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1762 assert(CE && "non-constant post-idx-imm8s4 operand!");
1763 int Imm = CE->getValue();
1764 bool isAdd = Imm >= 0;
1765 if (Imm == INT32_MIN) Imm = 0;
1766 // Immediate is scaled by 4.
1767 Imm = ((Imm < 0 ? -Imm : Imm) / 4) | (int)isAdd << 8;
1768 Inst.addOperand(MCOperand::CreateImm(Imm));
1771 void addPostIdxRegOperands(MCInst &Inst, unsigned N) const {
1772 assert(N == 2 && "Invalid number of operands!");
1773 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
1774 Inst.addOperand(MCOperand::CreateImm(PostIdxReg.isAdd));
1777 void addPostIdxRegShiftedOperands(MCInst &Inst, unsigned N) const {
1778 assert(N == 2 && "Invalid number of operands!");
1779 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
1780 // The sign, shift type, and shift amount are encoded in a single operand
1781 // using the AM2 encoding helpers.
1782 ARM_AM::AddrOpc opc = PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub;
1783 unsigned Imm = ARM_AM::getAM2Opc(opc, PostIdxReg.ShiftImm,
1784 PostIdxReg.ShiftTy);
1785 Inst.addOperand(MCOperand::CreateImm(Imm));
1788 void addMSRMaskOperands(MCInst &Inst, unsigned N) const {
1789 assert(N == 1 && "Invalid number of operands!");
1790 Inst.addOperand(MCOperand::CreateImm(unsigned(getMSRMask())));
1793 void addProcIFlagsOperands(MCInst &Inst, unsigned N) const {
1794 assert(N == 1 && "Invalid number of operands!");
1795 Inst.addOperand(MCOperand::CreateImm(unsigned(getProcIFlags())));
1798 void addVecListOperands(MCInst &Inst, unsigned N) const {
1799 assert(N == 1 && "Invalid number of operands!");
1800 Inst.addOperand(MCOperand::CreateReg(VectorList.RegNum));
1803 void addVecListIndexedOperands(MCInst &Inst, unsigned N) const {
1804 assert(N == 2 && "Invalid number of operands!");
1805 Inst.addOperand(MCOperand::CreateReg(VectorList.RegNum));
1806 Inst.addOperand(MCOperand::CreateImm(VectorList.LaneIndex));
1809 void addVectorIndex8Operands(MCInst &Inst, unsigned N) const {
1810 assert(N == 1 && "Invalid number of operands!");
1811 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
1814 void addVectorIndex16Operands(MCInst &Inst, unsigned N) const {
1815 assert(N == 1 && "Invalid number of operands!");
1816 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
1819 void addVectorIndex32Operands(MCInst &Inst, unsigned N) const {
1820 assert(N == 1 && "Invalid number of operands!");
1821 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
1824 void addNEONi8splatOperands(MCInst &Inst, unsigned N) const {
1825 assert(N == 1 && "Invalid number of operands!");
1826 // The immediate encodes the type of constant as well as the value.
1827 // Mask in that this is an i8 splat.
1828 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1829 Inst.addOperand(MCOperand::CreateImm(CE->getValue() | 0xe00));
1832 void addNEONi16splatOperands(MCInst &Inst, unsigned N) const {
1833 assert(N == 1 && "Invalid number of operands!");
1834 // The immediate encodes the type of constant as well as the value.
1835 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1836 unsigned Value = CE->getValue();
1838 Value = (Value >> 8) | 0xa00;
1841 Inst.addOperand(MCOperand::CreateImm(Value));
1844 void addNEONi32splatOperands(MCInst &Inst, unsigned N) const {
1845 assert(N == 1 && "Invalid number of operands!");
1846 // The immediate encodes the type of constant as well as the value.
1847 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1848 unsigned Value = CE->getValue();
1849 if (Value >= 256 && Value <= 0xff00)
1850 Value = (Value >> 8) | 0x200;
1851 else if (Value > 0xffff && Value <= 0xff0000)
1852 Value = (Value >> 16) | 0x400;
1853 else if (Value > 0xffffff)
1854 Value = (Value >> 24) | 0x600;
1855 Inst.addOperand(MCOperand::CreateImm(Value));
1858 void addNEONi32vmovOperands(MCInst &Inst, unsigned N) const {
1859 assert(N == 1 && "Invalid number of operands!");
1860 // The immediate encodes the type of constant as well as the value.
1861 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1862 unsigned Value = CE->getValue();
1863 if (Value >= 256 && Value <= 0xffff)
1864 Value = (Value >> 8) | ((Value & 0xff) ? 0xc00 : 0x200);
1865 else if (Value > 0xffff && Value <= 0xffffff)
1866 Value = (Value >> 16) | ((Value & 0xff) ? 0xd00 : 0x400);
1867 else if (Value > 0xffffff)
1868 Value = (Value >> 24) | 0x600;
1869 Inst.addOperand(MCOperand::CreateImm(Value));
1872 void addNEONi32vmovNegOperands(MCInst &Inst, unsigned N) const {
1873 assert(N == 1 && "Invalid number of operands!");
1874 // The immediate encodes the type of constant as well as the value.
1875 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1876 unsigned Value = ~CE->getValue();
1877 if (Value >= 256 && Value <= 0xffff)
1878 Value = (Value >> 8) | ((Value & 0xff) ? 0xc00 : 0x200);
1879 else if (Value > 0xffff && Value <= 0xffffff)
1880 Value = (Value >> 16) | ((Value & 0xff) ? 0xd00 : 0x400);
1881 else if (Value > 0xffffff)
1882 Value = (Value >> 24) | 0x600;
1883 Inst.addOperand(MCOperand::CreateImm(Value));
1886 void addNEONi64splatOperands(MCInst &Inst, unsigned N) const {
1887 assert(N == 1 && "Invalid number of operands!");
1888 // The immediate encodes the type of constant as well as the value.
1889 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1890 uint64_t Value = CE->getValue();
1892 for (unsigned i = 0; i < 8; ++i, Value >>= 8) {
1893 Imm |= (Value & 1) << i;
1895 Inst.addOperand(MCOperand::CreateImm(Imm | 0x1e00));
1898 virtual void print(raw_ostream &OS) const;
1900 static ARMOperand *CreateITMask(unsigned Mask, SMLoc S) {
1901 ARMOperand *Op = new ARMOperand(k_ITCondMask);
1902 Op->ITMask.Mask = Mask;
1908 static ARMOperand *CreateCondCode(ARMCC::CondCodes CC, SMLoc S) {
1909 ARMOperand *Op = new ARMOperand(k_CondCode);
1916 static ARMOperand *CreateCoprocNum(unsigned CopVal, SMLoc S) {
1917 ARMOperand *Op = new ARMOperand(k_CoprocNum);
1918 Op->Cop.Val = CopVal;
1924 static ARMOperand *CreateCoprocReg(unsigned CopVal, SMLoc S) {
1925 ARMOperand *Op = new ARMOperand(k_CoprocReg);
1926 Op->Cop.Val = CopVal;
1932 static ARMOperand *CreateCoprocOption(unsigned Val, SMLoc S, SMLoc E) {
1933 ARMOperand *Op = new ARMOperand(k_CoprocOption);
1940 static ARMOperand *CreateCCOut(unsigned RegNum, SMLoc S) {
1941 ARMOperand *Op = new ARMOperand(k_CCOut);
1942 Op->Reg.RegNum = RegNum;
1948 static ARMOperand *CreateToken(StringRef Str, SMLoc S) {
1949 ARMOperand *Op = new ARMOperand(k_Token);
1950 Op->Tok.Data = Str.data();
1951 Op->Tok.Length = Str.size();
1957 static ARMOperand *CreateReg(unsigned RegNum, SMLoc S, SMLoc E) {
1958 ARMOperand *Op = new ARMOperand(k_Register);
1959 Op->Reg.RegNum = RegNum;
1965 static ARMOperand *CreateShiftedRegister(ARM_AM::ShiftOpc ShTy,
1970 ARMOperand *Op = new ARMOperand(k_ShiftedRegister);
1971 Op->RegShiftedReg.ShiftTy = ShTy;
1972 Op->RegShiftedReg.SrcReg = SrcReg;
1973 Op->RegShiftedReg.ShiftReg = ShiftReg;
1974 Op->RegShiftedReg.ShiftImm = ShiftImm;
1980 static ARMOperand *CreateShiftedImmediate(ARM_AM::ShiftOpc ShTy,
1984 ARMOperand *Op = new ARMOperand(k_ShiftedImmediate);
1985 Op->RegShiftedImm.ShiftTy = ShTy;
1986 Op->RegShiftedImm.SrcReg = SrcReg;
1987 Op->RegShiftedImm.ShiftImm = ShiftImm;
1993 static ARMOperand *CreateShifterImm(bool isASR, unsigned Imm,
1995 ARMOperand *Op = new ARMOperand(k_ShifterImmediate);
1996 Op->ShifterImm.isASR = isASR;
1997 Op->ShifterImm.Imm = Imm;
2003 static ARMOperand *CreateRotImm(unsigned Imm, SMLoc S, SMLoc E) {
2004 ARMOperand *Op = new ARMOperand(k_RotateImmediate);
2005 Op->RotImm.Imm = Imm;
2011 static ARMOperand *CreateBitfield(unsigned LSB, unsigned Width,
2013 ARMOperand *Op = new ARMOperand(k_BitfieldDescriptor);
2014 Op->Bitfield.LSB = LSB;
2015 Op->Bitfield.Width = Width;
2022 CreateRegList(const SmallVectorImpl<std::pair<unsigned, SMLoc> > &Regs,
2023 SMLoc StartLoc, SMLoc EndLoc) {
2024 KindTy Kind = k_RegisterList;
2026 if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Regs.front().first))
2027 Kind = k_DPRRegisterList;
2028 else if (ARMMCRegisterClasses[ARM::SPRRegClassID].
2029 contains(Regs.front().first))
2030 Kind = k_SPRRegisterList;
2032 ARMOperand *Op = new ARMOperand(Kind);
2033 for (SmallVectorImpl<std::pair<unsigned, SMLoc> >::const_iterator
2034 I = Regs.begin(), E = Regs.end(); I != E; ++I)
2035 Op->Registers.push_back(I->first);
2036 array_pod_sort(Op->Registers.begin(), Op->Registers.end());
2037 Op->StartLoc = StartLoc;
2038 Op->EndLoc = EndLoc;
2042 static ARMOperand *CreateVectorList(unsigned RegNum, unsigned Count,
2043 bool isDoubleSpaced, SMLoc S, SMLoc E) {
2044 ARMOperand *Op = new ARMOperand(k_VectorList);
2045 Op->VectorList.RegNum = RegNum;
2046 Op->VectorList.Count = Count;
2047 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2053 static ARMOperand *CreateVectorListAllLanes(unsigned RegNum, unsigned Count,
2054 bool isDoubleSpaced,
2056 ARMOperand *Op = new ARMOperand(k_VectorListAllLanes);
2057 Op->VectorList.RegNum = RegNum;
2058 Op->VectorList.Count = Count;
2059 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2065 static ARMOperand *CreateVectorListIndexed(unsigned RegNum, unsigned Count,
2067 bool isDoubleSpaced,
2069 ARMOperand *Op = new ARMOperand(k_VectorListIndexed);
2070 Op->VectorList.RegNum = RegNum;
2071 Op->VectorList.Count = Count;
2072 Op->VectorList.LaneIndex = Index;
2073 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2079 static ARMOperand *CreateVectorIndex(unsigned Idx, SMLoc S, SMLoc E,
2081 ARMOperand *Op = new ARMOperand(k_VectorIndex);
2082 Op->VectorIndex.Val = Idx;
2088 static ARMOperand *CreateImm(const MCExpr *Val, SMLoc S, SMLoc E) {
2089 ARMOperand *Op = new ARMOperand(k_Immediate);
2096 static ARMOperand *CreateMem(unsigned BaseRegNum,
2097 const MCConstantExpr *OffsetImm,
2098 unsigned OffsetRegNum,
2099 ARM_AM::ShiftOpc ShiftType,
2104 ARMOperand *Op = new ARMOperand(k_Memory);
2105 Op->Memory.BaseRegNum = BaseRegNum;
2106 Op->Memory.OffsetImm = OffsetImm;
2107 Op->Memory.OffsetRegNum = OffsetRegNum;
2108 Op->Memory.ShiftType = ShiftType;
2109 Op->Memory.ShiftImm = ShiftImm;
2110 Op->Memory.Alignment = Alignment;
2111 Op->Memory.isNegative = isNegative;
2117 static ARMOperand *CreatePostIdxReg(unsigned RegNum, bool isAdd,
2118 ARM_AM::ShiftOpc ShiftTy,
2121 ARMOperand *Op = new ARMOperand(k_PostIndexRegister);
2122 Op->PostIdxReg.RegNum = RegNum;
2123 Op->PostIdxReg.isAdd = isAdd;
2124 Op->PostIdxReg.ShiftTy = ShiftTy;
2125 Op->PostIdxReg.ShiftImm = ShiftImm;
2131 static ARMOperand *CreateMemBarrierOpt(ARM_MB::MemBOpt Opt, SMLoc S) {
2132 ARMOperand *Op = new ARMOperand(k_MemBarrierOpt);
2133 Op->MBOpt.Val = Opt;
2139 static ARMOperand *CreateProcIFlags(ARM_PROC::IFlags IFlags, SMLoc S) {
2140 ARMOperand *Op = new ARMOperand(k_ProcIFlags);
2141 Op->IFlags.Val = IFlags;
2147 static ARMOperand *CreateMSRMask(unsigned MMask, SMLoc S) {
2148 ARMOperand *Op = new ARMOperand(k_MSRMask);
2149 Op->MMask.Val = MMask;
2156 } // end anonymous namespace.
2158 void ARMOperand::print(raw_ostream &OS) const {
2161 OS << "<ARMCC::" << ARMCondCodeToString(getCondCode()) << ">";
2164 OS << "<ccout " << getReg() << ">";
2166 case k_ITCondMask: {
2167 static const char *MaskStr[] = {
2168 "()", "(t)", "(e)", "(tt)", "(et)", "(te)", "(ee)", "(ttt)", "(ett)",
2169 "(tet)", "(eet)", "(tte)", "(ete)", "(tee)", "(eee)"
2171 assert((ITMask.Mask & 0xf) == ITMask.Mask);
2172 OS << "<it-mask " << MaskStr[ITMask.Mask] << ">";
2176 OS << "<coprocessor number: " << getCoproc() << ">";
2179 OS << "<coprocessor register: " << getCoproc() << ">";
2181 case k_CoprocOption:
2182 OS << "<coprocessor option: " << CoprocOption.Val << ">";
2185 OS << "<mask: " << getMSRMask() << ">";
2188 getImm()->print(OS);
2190 case k_MemBarrierOpt:
2191 OS << "<ARM_MB::" << MemBOptToString(getMemBarrierOpt()) << ">";
2195 << " base:" << Memory.BaseRegNum;
2198 case k_PostIndexRegister:
2199 OS << "post-idx register " << (PostIdxReg.isAdd ? "" : "-")
2200 << PostIdxReg.RegNum;
2201 if (PostIdxReg.ShiftTy != ARM_AM::no_shift)
2202 OS << ARM_AM::getShiftOpcStr(PostIdxReg.ShiftTy) << " "
2203 << PostIdxReg.ShiftImm;
2206 case k_ProcIFlags: {
2207 OS << "<ARM_PROC::";
2208 unsigned IFlags = getProcIFlags();
2209 for (int i=2; i >= 0; --i)
2210 if (IFlags & (1 << i))
2211 OS << ARM_PROC::IFlagsToString(1 << i);
2216 OS << "<register " << getReg() << ">";
2218 case k_ShifterImmediate:
2219 OS << "<shift " << (ShifterImm.isASR ? "asr" : "lsl")
2220 << " #" << ShifterImm.Imm << ">";
2222 case k_ShiftedRegister:
2223 OS << "<so_reg_reg "
2224 << RegShiftedReg.SrcReg << " "
2225 << ARM_AM::getShiftOpcStr(RegShiftedReg.ShiftTy)
2226 << " " << RegShiftedReg.ShiftReg << ">";
2228 case k_ShiftedImmediate:
2229 OS << "<so_reg_imm "
2230 << RegShiftedImm.SrcReg << " "
2231 << ARM_AM::getShiftOpcStr(RegShiftedImm.ShiftTy)
2232 << " #" << RegShiftedImm.ShiftImm << ">";
2234 case k_RotateImmediate:
2235 OS << "<ror " << " #" << (RotImm.Imm * 8) << ">";
2237 case k_BitfieldDescriptor:
2238 OS << "<bitfield " << "lsb: " << Bitfield.LSB
2239 << ", width: " << Bitfield.Width << ">";
2241 case k_RegisterList:
2242 case k_DPRRegisterList:
2243 case k_SPRRegisterList: {
2244 OS << "<register_list ";
2246 const SmallVectorImpl<unsigned> &RegList = getRegList();
2247 for (SmallVectorImpl<unsigned>::const_iterator
2248 I = RegList.begin(), E = RegList.end(); I != E; ) {
2250 if (++I < E) OS << ", ";
2257 OS << "<vector_list " << VectorList.Count << " * "
2258 << VectorList.RegNum << ">";
2260 case k_VectorListAllLanes:
2261 OS << "<vector_list(all lanes) " << VectorList.Count << " * "
2262 << VectorList.RegNum << ">";
2264 case k_VectorListIndexed:
2265 OS << "<vector_list(lane " << VectorList.LaneIndex << ") "
2266 << VectorList.Count << " * " << VectorList.RegNum << ">";
2269 OS << "'" << getToken() << "'";
2272 OS << "<vectorindex " << getVectorIndex() << ">";
2277 /// @name Auto-generated Match Functions
2280 static unsigned MatchRegisterName(StringRef Name);
2284 bool ARMAsmParser::ParseRegister(unsigned &RegNo,
2285 SMLoc &StartLoc, SMLoc &EndLoc) {
2286 StartLoc = Parser.getTok().getLoc();
2287 RegNo = tryParseRegister();
2288 EndLoc = Parser.getTok().getLoc();
2290 return (RegNo == (unsigned)-1);
2293 /// Try to parse a register name. The token must be an Identifier when called,
2294 /// and if it is a register name the token is eaten and the register number is
2295 /// returned. Otherwise return -1.
2297 int ARMAsmParser::tryParseRegister() {
2298 const AsmToken &Tok = Parser.getTok();
2299 if (Tok.isNot(AsmToken::Identifier)) return -1;
2301 std::string lowerCase = Tok.getString().lower();
2302 unsigned RegNum = MatchRegisterName(lowerCase);
2304 RegNum = StringSwitch<unsigned>(lowerCase)
2305 .Case("r13", ARM::SP)
2306 .Case("r14", ARM::LR)
2307 .Case("r15", ARM::PC)
2308 .Case("ip", ARM::R12)
2309 // Additional register name aliases for 'gas' compatibility.
2310 .Case("a1", ARM::R0)
2311 .Case("a2", ARM::R1)
2312 .Case("a3", ARM::R2)
2313 .Case("a4", ARM::R3)
2314 .Case("v1", ARM::R4)
2315 .Case("v2", ARM::R5)
2316 .Case("v3", ARM::R6)
2317 .Case("v4", ARM::R7)
2318 .Case("v5", ARM::R8)
2319 .Case("v6", ARM::R9)
2320 .Case("v7", ARM::R10)
2321 .Case("v8", ARM::R11)
2322 .Case("sb", ARM::R9)
2323 .Case("sl", ARM::R10)
2324 .Case("fp", ARM::R11)
2328 // Check for aliases registered via .req. Canonicalize to lower case.
2329 // That's more consistent since register names are case insensitive, and
2330 // it's how the original entry was passed in from MC/MCParser/AsmParser.
2331 StringMap<unsigned>::const_iterator Entry = RegisterReqs.find(lowerCase);
2332 // If no match, return failure.
2333 if (Entry == RegisterReqs.end())
2335 Parser.Lex(); // Eat identifier token.
2336 return Entry->getValue();
2339 Parser.Lex(); // Eat identifier token.
2344 // Try to parse a shifter (e.g., "lsl <amt>"). On success, return 0.
2345 // If a recoverable error occurs, return 1. If an irrecoverable error
2346 // occurs, return -1. An irrecoverable error is one where tokens have been
2347 // consumed in the process of trying to parse the shifter (i.e., when it is
2348 // indeed a shifter operand, but malformed).
2349 int ARMAsmParser::tryParseShiftRegister(
2350 SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2351 SMLoc S = Parser.getTok().getLoc();
2352 const AsmToken &Tok = Parser.getTok();
2353 assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
2355 std::string lowerCase = Tok.getString().lower();
2356 ARM_AM::ShiftOpc ShiftTy = StringSwitch<ARM_AM::ShiftOpc>(lowerCase)
2357 .Case("asl", ARM_AM::lsl)
2358 .Case("lsl", ARM_AM::lsl)
2359 .Case("lsr", ARM_AM::lsr)
2360 .Case("asr", ARM_AM::asr)
2361 .Case("ror", ARM_AM::ror)
2362 .Case("rrx", ARM_AM::rrx)
2363 .Default(ARM_AM::no_shift);
2365 if (ShiftTy == ARM_AM::no_shift)
2368 Parser.Lex(); // Eat the operator.
2370 // The source register for the shift has already been added to the
2371 // operand list, so we need to pop it off and combine it into the shifted
2372 // register operand instead.
2373 OwningPtr<ARMOperand> PrevOp((ARMOperand*)Operands.pop_back_val());
2374 if (!PrevOp->isReg())
2375 return Error(PrevOp->getStartLoc(), "shift must be of a register");
2376 int SrcReg = PrevOp->getReg();
2379 if (ShiftTy == ARM_AM::rrx) {
2380 // RRX Doesn't have an explicit shift amount. The encoder expects
2381 // the shift register to be the same as the source register. Seems odd,
2385 // Figure out if this is shifted by a constant or a register (for non-RRX).
2386 if (Parser.getTok().is(AsmToken::Hash) ||
2387 Parser.getTok().is(AsmToken::Dollar)) {
2388 Parser.Lex(); // Eat hash.
2389 SMLoc ImmLoc = Parser.getTok().getLoc();
2390 const MCExpr *ShiftExpr = 0;
2391 if (getParser().ParseExpression(ShiftExpr)) {
2392 Error(ImmLoc, "invalid immediate shift value");
2395 // The expression must be evaluatable as an immediate.
2396 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftExpr);
2398 Error(ImmLoc, "invalid immediate shift value");
2401 // Range check the immediate.
2402 // lsl, ror: 0 <= imm <= 31
2403 // lsr, asr: 0 <= imm <= 32
2404 Imm = CE->getValue();
2406 ((ShiftTy == ARM_AM::lsl || ShiftTy == ARM_AM::ror) && Imm > 31) ||
2407 ((ShiftTy == ARM_AM::lsr || ShiftTy == ARM_AM::asr) && Imm > 32)) {
2408 Error(ImmLoc, "immediate shift value out of range");
2411 // shift by zero is a nop. Always send it through as lsl.
2412 // ('as' compatibility)
2414 ShiftTy = ARM_AM::lsl;
2415 } else if (Parser.getTok().is(AsmToken::Identifier)) {
2416 ShiftReg = tryParseRegister();
2417 SMLoc L = Parser.getTok().getLoc();
2418 if (ShiftReg == -1) {
2419 Error (L, "expected immediate or register in shift operand");
2423 Error (Parser.getTok().getLoc(),
2424 "expected immediate or register in shift operand");
2429 if (ShiftReg && ShiftTy != ARM_AM::rrx)
2430 Operands.push_back(ARMOperand::CreateShiftedRegister(ShiftTy, SrcReg,
2432 S, Parser.getTok().getLoc()));
2434 Operands.push_back(ARMOperand::CreateShiftedImmediate(ShiftTy, SrcReg, Imm,
2435 S, Parser.getTok().getLoc()));
2441 /// Try to parse a register name. The token must be an Identifier when called.
2442 /// If it's a register, an AsmOperand is created. Another AsmOperand is created
2443 /// if there is a "writeback". 'true' if it's not a register.
2445 /// TODO this is likely to change to allow different register types and or to
2446 /// parse for a specific register type.
2448 tryParseRegisterWithWriteBack(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2449 SMLoc S = Parser.getTok().getLoc();
2450 int RegNo = tryParseRegister();
2454 Operands.push_back(ARMOperand::CreateReg(RegNo, S, Parser.getTok().getLoc()));
2456 const AsmToken &ExclaimTok = Parser.getTok();
2457 if (ExclaimTok.is(AsmToken::Exclaim)) {
2458 Operands.push_back(ARMOperand::CreateToken(ExclaimTok.getString(),
2459 ExclaimTok.getLoc()));
2460 Parser.Lex(); // Eat exclaim token
2464 // Also check for an index operand. This is only legal for vector registers,
2465 // but that'll get caught OK in operand matching, so we don't need to
2466 // explicitly filter everything else out here.
2467 if (Parser.getTok().is(AsmToken::LBrac)) {
2468 SMLoc SIdx = Parser.getTok().getLoc();
2469 Parser.Lex(); // Eat left bracket token.
2471 const MCExpr *ImmVal;
2472 if (getParser().ParseExpression(ImmVal))
2473 return MatchOperand_ParseFail;
2474 const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal);
2476 TokError("immediate value expected for vector index");
2477 return MatchOperand_ParseFail;
2480 SMLoc E = Parser.getTok().getLoc();
2481 if (Parser.getTok().isNot(AsmToken::RBrac)) {
2482 Error(E, "']' expected");
2483 return MatchOperand_ParseFail;
2486 Parser.Lex(); // Eat right bracket token.
2488 Operands.push_back(ARMOperand::CreateVectorIndex(MCE->getValue(),
2496 /// MatchCoprocessorOperandName - Try to parse an coprocessor related
2497 /// instruction with a symbolic operand name. Example: "p1", "p7", "c3",
2499 static int MatchCoprocessorOperandName(StringRef Name, char CoprocOp) {
2500 // Use the same layout as the tablegen'erated register name matcher. Ugly,
2502 switch (Name.size()) {
2505 if (Name[0] != CoprocOp)
2522 if (Name[0] != CoprocOp || Name[1] != '1')
2526 case '0': return 10;
2527 case '1': return 11;
2528 case '2': return 12;
2529 case '3': return 13;
2530 case '4': return 14;
2531 case '5': return 15;
2539 /// parseITCondCode - Try to parse a condition code for an IT instruction.
2540 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2541 parseITCondCode(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2542 SMLoc S = Parser.getTok().getLoc();
2543 const AsmToken &Tok = Parser.getTok();
2544 if (!Tok.is(AsmToken::Identifier))
2545 return MatchOperand_NoMatch;
2546 unsigned CC = StringSwitch<unsigned>(Tok.getString())
2547 .Case("eq", ARMCC::EQ)
2548 .Case("ne", ARMCC::NE)
2549 .Case("hs", ARMCC::HS)
2550 .Case("cs", ARMCC::HS)
2551 .Case("lo", ARMCC::LO)
2552 .Case("cc", ARMCC::LO)
2553 .Case("mi", ARMCC::MI)
2554 .Case("pl", ARMCC::PL)
2555 .Case("vs", ARMCC::VS)
2556 .Case("vc", ARMCC::VC)
2557 .Case("hi", ARMCC::HI)
2558 .Case("ls", ARMCC::LS)
2559 .Case("ge", ARMCC::GE)
2560 .Case("lt", ARMCC::LT)
2561 .Case("gt", ARMCC::GT)
2562 .Case("le", ARMCC::LE)
2563 .Case("al", ARMCC::AL)
2566 return MatchOperand_NoMatch;
2567 Parser.Lex(); // Eat the token.
2569 Operands.push_back(ARMOperand::CreateCondCode(ARMCC::CondCodes(CC), S));
2571 return MatchOperand_Success;
2574 /// parseCoprocNumOperand - Try to parse an coprocessor number operand. The
2575 /// token must be an Identifier when called, and if it is a coprocessor
2576 /// number, the token is eaten and the operand is added to the operand list.
2577 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2578 parseCoprocNumOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2579 SMLoc S = Parser.getTok().getLoc();
2580 const AsmToken &Tok = Parser.getTok();
2581 if (Tok.isNot(AsmToken::Identifier))
2582 return MatchOperand_NoMatch;
2584 int Num = MatchCoprocessorOperandName(Tok.getString(), 'p');
2586 return MatchOperand_NoMatch;
2588 Parser.Lex(); // Eat identifier token.
2589 Operands.push_back(ARMOperand::CreateCoprocNum(Num, S));
2590 return MatchOperand_Success;
2593 /// parseCoprocRegOperand - Try to parse an coprocessor register operand. The
2594 /// token must be an Identifier when called, and if it is a coprocessor
2595 /// number, the token is eaten and the operand is added to the operand list.
2596 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2597 parseCoprocRegOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2598 SMLoc S = Parser.getTok().getLoc();
2599 const AsmToken &Tok = Parser.getTok();
2600 if (Tok.isNot(AsmToken::Identifier))
2601 return MatchOperand_NoMatch;
2603 int Reg = MatchCoprocessorOperandName(Tok.getString(), 'c');
2605 return MatchOperand_NoMatch;
2607 Parser.Lex(); // Eat identifier token.
2608 Operands.push_back(ARMOperand::CreateCoprocReg(Reg, S));
2609 return MatchOperand_Success;
2612 /// parseCoprocOptionOperand - Try to parse an coprocessor option operand.
2613 /// coproc_option : '{' imm0_255 '}'
2614 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2615 parseCoprocOptionOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2616 SMLoc S = Parser.getTok().getLoc();
2618 // If this isn't a '{', this isn't a coprocessor immediate operand.
2619 if (Parser.getTok().isNot(AsmToken::LCurly))
2620 return MatchOperand_NoMatch;
2621 Parser.Lex(); // Eat the '{'
2624 SMLoc Loc = Parser.getTok().getLoc();
2625 if (getParser().ParseExpression(Expr)) {
2626 Error(Loc, "illegal expression");
2627 return MatchOperand_ParseFail;
2629 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
2630 if (!CE || CE->getValue() < 0 || CE->getValue() > 255) {
2631 Error(Loc, "coprocessor option must be an immediate in range [0, 255]");
2632 return MatchOperand_ParseFail;
2634 int Val = CE->getValue();
2636 // Check for and consume the closing '}'
2637 if (Parser.getTok().isNot(AsmToken::RCurly))
2638 return MatchOperand_ParseFail;
2639 SMLoc E = Parser.getTok().getLoc();
2640 Parser.Lex(); // Eat the '}'
2642 Operands.push_back(ARMOperand::CreateCoprocOption(Val, S, E));
2643 return MatchOperand_Success;
2646 // For register list parsing, we need to map from raw GPR register numbering
2647 // to the enumeration values. The enumeration values aren't sorted by
2648 // register number due to our using "sp", "lr" and "pc" as canonical names.
2649 static unsigned getNextRegister(unsigned Reg) {
2650 // If this is a GPR, we need to do it manually, otherwise we can rely
2651 // on the sort ordering of the enumeration since the other reg-classes
2653 if (!ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
2656 default: assert(0 && "Invalid GPR number!");
2657 case ARM::R0: return ARM::R1; case ARM::R1: return ARM::R2;
2658 case ARM::R2: return ARM::R3; case ARM::R3: return ARM::R4;
2659 case ARM::R4: return ARM::R5; case ARM::R5: return ARM::R6;
2660 case ARM::R6: return ARM::R7; case ARM::R7: return ARM::R8;
2661 case ARM::R8: return ARM::R9; case ARM::R9: return ARM::R10;
2662 case ARM::R10: return ARM::R11; case ARM::R11: return ARM::R12;
2663 case ARM::R12: return ARM::SP; case ARM::SP: return ARM::LR;
2664 case ARM::LR: return ARM::PC; case ARM::PC: return ARM::R0;
2668 // Return the low-subreg of a given Q register.
2669 static unsigned getDRegFromQReg(unsigned QReg) {
2671 default: llvm_unreachable("expected a Q register!");
2672 case ARM::Q0: return ARM::D0;
2673 case ARM::Q1: return ARM::D2;
2674 case ARM::Q2: return ARM::D4;
2675 case ARM::Q3: return ARM::D6;
2676 case ARM::Q4: return ARM::D8;
2677 case ARM::Q5: return ARM::D10;
2678 case ARM::Q6: return ARM::D12;
2679 case ARM::Q7: return ARM::D14;
2680 case ARM::Q8: return ARM::D16;
2681 case ARM::Q9: return ARM::D18;
2682 case ARM::Q10: return ARM::D20;
2683 case ARM::Q11: return ARM::D22;
2684 case ARM::Q12: return ARM::D24;
2685 case ARM::Q13: return ARM::D26;
2686 case ARM::Q14: return ARM::D28;
2687 case ARM::Q15: return ARM::D30;
2691 /// Parse a register list.
2693 parseRegisterList(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2694 assert(Parser.getTok().is(AsmToken::LCurly) &&
2695 "Token is not a Left Curly Brace");
2696 SMLoc S = Parser.getTok().getLoc();
2697 Parser.Lex(); // Eat '{' token.
2698 SMLoc RegLoc = Parser.getTok().getLoc();
2700 // Check the first register in the list to see what register class
2701 // this is a list of.
2702 int Reg = tryParseRegister();
2704 return Error(RegLoc, "register expected");
2706 // The reglist instructions have at most 16 registers, so reserve
2707 // space for that many.
2708 SmallVector<std::pair<unsigned, SMLoc>, 16> Registers;
2710 // Allow Q regs and just interpret them as the two D sub-registers.
2711 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2712 Reg = getDRegFromQReg(Reg);
2713 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2716 const MCRegisterClass *RC;
2717 if (ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
2718 RC = &ARMMCRegisterClasses[ARM::GPRRegClassID];
2719 else if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg))
2720 RC = &ARMMCRegisterClasses[ARM::DPRRegClassID];
2721 else if (ARMMCRegisterClasses[ARM::SPRRegClassID].contains(Reg))
2722 RC = &ARMMCRegisterClasses[ARM::SPRRegClassID];
2724 return Error(RegLoc, "invalid register in register list");
2726 // Store the register.
2727 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2729 // This starts immediately after the first register token in the list,
2730 // so we can see either a comma or a minus (range separator) as a legal
2732 while (Parser.getTok().is(AsmToken::Comma) ||
2733 Parser.getTok().is(AsmToken::Minus)) {
2734 if (Parser.getTok().is(AsmToken::Minus)) {
2735 Parser.Lex(); // Eat the minus.
2736 SMLoc EndLoc = Parser.getTok().getLoc();
2737 int EndReg = tryParseRegister();
2739 return Error(EndLoc, "register expected");
2740 // Allow Q regs and just interpret them as the two D sub-registers.
2741 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(EndReg))
2742 EndReg = getDRegFromQReg(EndReg) + 1;
2743 // If the register is the same as the start reg, there's nothing
2747 // The register must be in the same register class as the first.
2748 if (!RC->contains(EndReg))
2749 return Error(EndLoc, "invalid register in register list");
2750 // Ranges must go from low to high.
2751 if (getARMRegisterNumbering(Reg) > getARMRegisterNumbering(EndReg))
2752 return Error(EndLoc, "bad range in register list");
2754 // Add all the registers in the range to the register list.
2755 while (Reg != EndReg) {
2756 Reg = getNextRegister(Reg);
2757 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2761 Parser.Lex(); // Eat the comma.
2762 RegLoc = Parser.getTok().getLoc();
2764 const AsmToken RegTok = Parser.getTok();
2765 Reg = tryParseRegister();
2767 return Error(RegLoc, "register expected");
2768 // Allow Q regs and just interpret them as the two D sub-registers.
2769 bool isQReg = false;
2770 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2771 Reg = getDRegFromQReg(Reg);
2774 // The register must be in the same register class as the first.
2775 if (!RC->contains(Reg))
2776 return Error(RegLoc, "invalid register in register list");
2777 // List must be monotonically increasing.
2778 if (getARMRegisterNumbering(Reg) < getARMRegisterNumbering(OldReg))
2779 return Error(RegLoc, "register list not in ascending order");
2780 if (getARMRegisterNumbering(Reg) == getARMRegisterNumbering(OldReg)) {
2781 Warning(RegLoc, "duplicated register (" + RegTok.getString() +
2782 ") in register list");
2785 // VFP register lists must also be contiguous.
2786 // It's OK to use the enumeration values directly here rather, as the
2787 // VFP register classes have the enum sorted properly.
2788 if (RC != &ARMMCRegisterClasses[ARM::GPRRegClassID] &&
2790 return Error(RegLoc, "non-contiguous register range");
2791 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2793 Registers.push_back(std::pair<unsigned, SMLoc>(++Reg, RegLoc));
2796 SMLoc E = Parser.getTok().getLoc();
2797 if (Parser.getTok().isNot(AsmToken::RCurly))
2798 return Error(E, "'}' expected");
2799 Parser.Lex(); // Eat '}' token.
2801 // Push the register list operand.
2802 Operands.push_back(ARMOperand::CreateRegList(Registers, S, E));
2804 // The ARM system instruction variants for LDM/STM have a '^' token here.
2805 if (Parser.getTok().is(AsmToken::Caret)) {
2806 Operands.push_back(ARMOperand::CreateToken("^",Parser.getTok().getLoc()));
2807 Parser.Lex(); // Eat '^' token.
2813 // Helper function to parse the lane index for vector lists.
2814 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2815 parseVectorLane(VectorLaneTy &LaneKind, unsigned &Index) {
2816 Index = 0; // Always return a defined index value.
2817 if (Parser.getTok().is(AsmToken::LBrac)) {
2818 Parser.Lex(); // Eat the '['.
2819 if (Parser.getTok().is(AsmToken::RBrac)) {
2820 // "Dn[]" is the 'all lanes' syntax.
2821 LaneKind = AllLanes;
2822 Parser.Lex(); // Eat the ']'.
2823 return MatchOperand_Success;
2825 const MCExpr *LaneIndex;
2826 SMLoc Loc = Parser.getTok().getLoc();
2827 if (getParser().ParseExpression(LaneIndex)) {
2828 Error(Loc, "illegal expression");
2829 return MatchOperand_ParseFail;
2831 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(LaneIndex);
2833 Error(Loc, "lane index must be empty or an integer");
2834 return MatchOperand_ParseFail;
2836 if (Parser.getTok().isNot(AsmToken::RBrac)) {
2837 Error(Parser.getTok().getLoc(), "']' expected");
2838 return MatchOperand_ParseFail;
2840 Parser.Lex(); // Eat the ']'.
2841 int64_t Val = CE->getValue();
2843 // FIXME: Make this range check context sensitive for .8, .16, .32.
2844 if (Val < 0 || Val > 7) {
2845 Error(Parser.getTok().getLoc(), "lane index out of range");
2846 return MatchOperand_ParseFail;
2849 LaneKind = IndexedLane;
2850 return MatchOperand_Success;
2853 return MatchOperand_Success;
2856 // parse a vector register list
2857 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2858 parseVectorList(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2859 VectorLaneTy LaneKind;
2861 SMLoc S = Parser.getTok().getLoc();
2862 // As an extension (to match gas), support a plain D register or Q register
2863 // (without encosing curly braces) as a single or double entry list,
2865 if (Parser.getTok().is(AsmToken::Identifier)) {
2866 int Reg = tryParseRegister();
2868 return MatchOperand_NoMatch;
2869 SMLoc E = Parser.getTok().getLoc();
2870 if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg)) {
2871 OperandMatchResultTy Res = parseVectorLane(LaneKind, LaneIndex);
2872 if (Res != MatchOperand_Success)
2876 E = Parser.getTok().getLoc();
2877 Operands.push_back(ARMOperand::CreateVectorList(Reg, 1, false, S, E));
2880 E = Parser.getTok().getLoc();
2881 Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 1, false,
2885 Operands.push_back(ARMOperand::CreateVectorListIndexed(Reg, 1,
2890 return MatchOperand_Success;
2892 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2893 Reg = getDRegFromQReg(Reg);
2894 OperandMatchResultTy Res = parseVectorLane(LaneKind, LaneIndex);
2895 if (Res != MatchOperand_Success)
2899 E = Parser.getTok().getLoc();
2900 Operands.push_back(ARMOperand::CreateVectorList(Reg, 2, false, S, E));
2903 E = Parser.getTok().getLoc();
2904 Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 2, false,
2908 Operands.push_back(ARMOperand::CreateVectorListIndexed(Reg, 2,
2913 return MatchOperand_Success;
2915 Error(S, "vector register expected");
2916 return MatchOperand_ParseFail;
2919 if (Parser.getTok().isNot(AsmToken::LCurly))
2920 return MatchOperand_NoMatch;
2922 Parser.Lex(); // Eat '{' token.
2923 SMLoc RegLoc = Parser.getTok().getLoc();
2925 int Reg = tryParseRegister();
2927 Error(RegLoc, "register expected");
2928 return MatchOperand_ParseFail;
2932 unsigned FirstReg = Reg;
2933 // The list is of D registers, but we also allow Q regs and just interpret
2934 // them as the two D sub-registers.
2935 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2936 FirstReg = Reg = getDRegFromQReg(Reg);
2937 Spacing = 1; // double-spacing requires explicit D registers, otherwise
2938 // it's ambiguous with four-register single spaced.
2942 if (parseVectorLane(LaneKind, LaneIndex) != MatchOperand_Success)
2943 return MatchOperand_ParseFail;
2945 while (Parser.getTok().is(AsmToken::Comma) ||
2946 Parser.getTok().is(AsmToken::Minus)) {
2947 if (Parser.getTok().is(AsmToken::Minus)) {
2949 Spacing = 1; // Register range implies a single spaced list.
2950 else if (Spacing == 2) {
2951 Error(Parser.getTok().getLoc(),
2952 "sequential registers in double spaced list");
2953 return MatchOperand_ParseFail;
2955 Parser.Lex(); // Eat the minus.
2956 SMLoc EndLoc = Parser.getTok().getLoc();
2957 int EndReg = tryParseRegister();
2959 Error(EndLoc, "register expected");
2960 return MatchOperand_ParseFail;
2962 // Allow Q regs and just interpret them as the two D sub-registers.
2963 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(EndReg))
2964 EndReg = getDRegFromQReg(EndReg) + 1;
2965 // If the register is the same as the start reg, there's nothing
2969 // The register must be in the same register class as the first.
2970 if (!ARMMCRegisterClasses[ARM::DPRRegClassID].contains(EndReg)) {
2971 Error(EndLoc, "invalid register in register list");
2972 return MatchOperand_ParseFail;
2974 // Ranges must go from low to high.
2976 Error(EndLoc, "bad range in register list");
2977 return MatchOperand_ParseFail;
2979 // Parse the lane specifier if present.
2980 VectorLaneTy NextLaneKind;
2981 unsigned NextLaneIndex;
2982 if (parseVectorLane(NextLaneKind, NextLaneIndex) != MatchOperand_Success)
2983 return MatchOperand_ParseFail;
2984 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
2985 Error(EndLoc, "mismatched lane index in register list");
2986 return MatchOperand_ParseFail;
2988 EndLoc = Parser.getTok().getLoc();
2990 // Add all the registers in the range to the register list.
2991 Count += EndReg - Reg;
2995 Parser.Lex(); // Eat the comma.
2996 RegLoc = Parser.getTok().getLoc();
2998 Reg = tryParseRegister();
3000 Error(RegLoc, "register expected");
3001 return MatchOperand_ParseFail;
3003 // vector register lists must be contiguous.
3004 // It's OK to use the enumeration values directly here rather, as the
3005 // VFP register classes have the enum sorted properly.
3007 // The list is of D registers, but we also allow Q regs and just interpret
3008 // them as the two D sub-registers.
3009 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
3011 Spacing = 1; // Register range implies a single spaced list.
3012 else if (Spacing == 2) {
3014 "invalid register in double-spaced list (must be 'D' register')");
3015 return MatchOperand_ParseFail;
3017 Reg = getDRegFromQReg(Reg);
3018 if (Reg != OldReg + 1) {
3019 Error(RegLoc, "non-contiguous register range");
3020 return MatchOperand_ParseFail;
3024 // Parse the lane specifier if present.
3025 VectorLaneTy NextLaneKind;
3026 unsigned NextLaneIndex;
3027 SMLoc EndLoc = Parser.getTok().getLoc();
3028 if (parseVectorLane(NextLaneKind, NextLaneIndex) != MatchOperand_Success)
3029 return MatchOperand_ParseFail;
3030 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
3031 Error(EndLoc, "mismatched lane index in register list");
3032 return MatchOperand_ParseFail;
3036 // Normal D register.
3037 // Figure out the register spacing (single or double) of the list if
3038 // we don't know it already.
3040 Spacing = 1 + (Reg == OldReg + 2);
3042 // Just check that it's contiguous and keep going.
3043 if (Reg != OldReg + Spacing) {
3044 Error(RegLoc, "non-contiguous register range");
3045 return MatchOperand_ParseFail;
3048 // Parse the lane specifier if present.
3049 VectorLaneTy NextLaneKind;
3050 unsigned NextLaneIndex;
3051 SMLoc EndLoc = Parser.getTok().getLoc();
3052 if (parseVectorLane(NextLaneKind, NextLaneIndex) != MatchOperand_Success)
3053 return MatchOperand_ParseFail;
3054 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
3055 Error(EndLoc, "mismatched lane index in register list");
3056 return MatchOperand_ParseFail;
3060 SMLoc E = Parser.getTok().getLoc();
3061 if (Parser.getTok().isNot(AsmToken::RCurly)) {
3062 Error(E, "'}' expected");
3063 return MatchOperand_ParseFail;
3065 Parser.Lex(); // Eat '}' token.
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 // Anything that can accept a floating point constant as an operand
4234 // needs to go through here, as the regular ParseExpression is
4237 // This routine still creates a generic Immediate operand, containing
4238 // a bitcast of the 64-bit floating point value. The various operands
4239 // that accept floats can check whether the value is valid for them
4240 // via the standard is*() predicates.
4242 SMLoc S = Parser.getTok().getLoc();
4244 if (Parser.getTok().isNot(AsmToken::Hash) &&
4245 Parser.getTok().isNot(AsmToken::Dollar))
4246 return MatchOperand_NoMatch;
4248 // Disambiguate the VMOV forms that can accept an FP immediate.
4249 // vmov.f32 <sreg>, #imm
4250 // vmov.f64 <dreg>, #imm
4251 // vmov.f32 <dreg>, #imm @ vector f32x2
4252 // vmov.f32 <qreg>, #imm @ vector f32x4
4254 // There are also the NEON VMOV instructions which expect an
4255 // integer constant. Make sure we don't try to parse an FPImm
4257 // vmov.i{8|16|32|64} <dreg|qreg>, #imm
4258 ARMOperand *TyOp = static_cast<ARMOperand*>(Operands[2]);
4259 if (!TyOp->isToken() || (TyOp->getToken() != ".f32" &&
4260 TyOp->getToken() != ".f64"))
4261 return MatchOperand_NoMatch;
4263 Parser.Lex(); // Eat the '#'.
4265 // Handle negation, as that still comes through as a separate token.
4266 bool isNegative = false;
4267 if (Parser.getTok().is(AsmToken::Minus)) {
4271 const AsmToken &Tok = Parser.getTok();
4272 SMLoc Loc = Tok.getLoc();
4273 if (Tok.is(AsmToken::Real)) {
4274 APFloat RealVal(APFloat::IEEEsingle, Tok.getString());
4275 uint64_t IntVal = RealVal.bitcastToAPInt().getZExtValue();
4276 // If we had a '-' in front, toggle the sign bit.
4277 IntVal ^= (uint64_t)isNegative << 31;
4278 Parser.Lex(); // Eat the token.
4279 Operands.push_back(ARMOperand::CreateImm(
4280 MCConstantExpr::Create(IntVal, getContext()),
4281 S, Parser.getTok().getLoc()));
4282 return MatchOperand_Success;
4284 // Also handle plain integers. Instructions which allow floating point
4285 // immediates also allow a raw encoded 8-bit value.
4286 if (Tok.is(AsmToken::Integer)) {
4287 int64_t Val = Tok.getIntVal();
4288 Parser.Lex(); // Eat the token.
4289 if (Val > 255 || Val < 0) {
4290 Error(Loc, "encoded floating point value out of range");
4291 return MatchOperand_ParseFail;
4293 double RealVal = ARM_AM::getFPImmFloat(Val);
4294 Val = APFloat(APFloat::IEEEdouble, RealVal).bitcastToAPInt().getZExtValue();
4295 Operands.push_back(ARMOperand::CreateImm(
4296 MCConstantExpr::Create(Val, getContext()), S,
4297 Parser.getTok().getLoc()));
4298 return MatchOperand_Success;
4301 Error(Loc, "invalid floating point immediate");
4302 return MatchOperand_ParseFail;
4305 /// Parse a arm instruction operand. For now this parses the operand regardless
4306 /// of the mnemonic.
4307 bool ARMAsmParser::parseOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands,
4308 StringRef Mnemonic) {
4311 // Check if the current operand has a custom associated parser, if so, try to
4312 // custom parse the operand, or fallback to the general approach.
4313 OperandMatchResultTy ResTy = MatchOperandParserImpl(Operands, Mnemonic);
4314 if (ResTy == MatchOperand_Success)
4316 // If there wasn't a custom match, try the generic matcher below. Otherwise,
4317 // there was a match, but an error occurred, in which case, just return that
4318 // the operand parsing failed.
4319 if (ResTy == MatchOperand_ParseFail)
4322 switch (getLexer().getKind()) {
4324 Error(Parser.getTok().getLoc(), "unexpected token in operand");
4326 case AsmToken::Identifier: {
4327 if (!tryParseRegisterWithWriteBack(Operands))
4329 int Res = tryParseShiftRegister(Operands);
4330 if (Res == 0) // success
4332 else if (Res == -1) // irrecoverable error
4334 // If this is VMRS, check for the apsr_nzcv operand.
4335 if (Mnemonic == "vmrs" && Parser.getTok().getString() == "apsr_nzcv") {
4336 S = Parser.getTok().getLoc();
4338 Operands.push_back(ARMOperand::CreateToken("apsr_nzcv", S));
4342 // Fall though for the Identifier case that is not a register or a
4345 case AsmToken::LParen: // parenthesized expressions like (_strcmp-4)
4346 case AsmToken::Integer: // things like 1f and 2b as a branch targets
4347 case AsmToken::String: // quoted label names.
4348 case AsmToken::Dot: { // . as a branch target
4349 // This was not a register so parse other operands that start with an
4350 // identifier (like labels) as expressions and create them as immediates.
4351 const MCExpr *IdVal;
4352 S = Parser.getTok().getLoc();
4353 if (getParser().ParseExpression(IdVal))
4355 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4356 Operands.push_back(ARMOperand::CreateImm(IdVal, S, E));
4359 case AsmToken::LBrac:
4360 return parseMemory(Operands);
4361 case AsmToken::LCurly:
4362 return parseRegisterList(Operands);
4363 case AsmToken::Dollar:
4364 case AsmToken::Hash: {
4365 // #42 -> immediate.
4366 // TODO: ":lower16:" and ":upper16:" modifiers after # before immediate
4367 S = Parser.getTok().getLoc();
4369 bool isNegative = Parser.getTok().is(AsmToken::Minus);
4370 const MCExpr *ImmVal;
4371 if (getParser().ParseExpression(ImmVal))
4373 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ImmVal);
4375 int32_t Val = CE->getValue();
4376 if (isNegative && Val == 0)
4377 ImmVal = MCConstantExpr::Create(INT32_MIN, getContext());
4379 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4380 Operands.push_back(ARMOperand::CreateImm(ImmVal, S, E));
4383 case AsmToken::Colon: {
4384 // ":lower16:" and ":upper16:" expression prefixes
4385 // FIXME: Check it's an expression prefix,
4386 // e.g. (FOO - :lower16:BAR) isn't legal.
4387 ARMMCExpr::VariantKind RefKind;
4388 if (parsePrefix(RefKind))
4391 const MCExpr *SubExprVal;
4392 if (getParser().ParseExpression(SubExprVal))
4395 const MCExpr *ExprVal = ARMMCExpr::Create(RefKind, SubExprVal,
4397 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4398 Operands.push_back(ARMOperand::CreateImm(ExprVal, S, E));
4404 // parsePrefix - Parse ARM 16-bit relocations expression prefix, i.e.
4405 // :lower16: and :upper16:.
4406 bool ARMAsmParser::parsePrefix(ARMMCExpr::VariantKind &RefKind) {
4407 RefKind = ARMMCExpr::VK_ARM_None;
4409 // :lower16: and :upper16: modifiers
4410 assert(getLexer().is(AsmToken::Colon) && "expected a :");
4411 Parser.Lex(); // Eat ':'
4413 if (getLexer().isNot(AsmToken::Identifier)) {
4414 Error(Parser.getTok().getLoc(), "expected prefix identifier in operand");
4418 StringRef IDVal = Parser.getTok().getIdentifier();
4419 if (IDVal == "lower16") {
4420 RefKind = ARMMCExpr::VK_ARM_LO16;
4421 } else if (IDVal == "upper16") {
4422 RefKind = ARMMCExpr::VK_ARM_HI16;
4424 Error(Parser.getTok().getLoc(), "unexpected prefix in operand");
4429 if (getLexer().isNot(AsmToken::Colon)) {
4430 Error(Parser.getTok().getLoc(), "unexpected token after prefix");
4433 Parser.Lex(); // Eat the last ':'
4437 /// \brief Given a mnemonic, split out possible predication code and carry
4438 /// setting letters to form a canonical mnemonic and flags.
4440 // FIXME: Would be nice to autogen this.
4441 // FIXME: This is a bit of a maze of special cases.
4442 StringRef ARMAsmParser::splitMnemonic(StringRef Mnemonic,
4443 unsigned &PredicationCode,
4445 unsigned &ProcessorIMod,
4446 StringRef &ITMask) {
4447 PredicationCode = ARMCC::AL;
4448 CarrySetting = false;
4451 // Ignore some mnemonics we know aren't predicated forms.
4453 // FIXME: Would be nice to autogen this.
4454 if ((Mnemonic == "movs" && isThumb()) ||
4455 Mnemonic == "teq" || Mnemonic == "vceq" || Mnemonic == "svc" ||
4456 Mnemonic == "mls" || Mnemonic == "smmls" || Mnemonic == "vcls" ||
4457 Mnemonic == "vmls" || Mnemonic == "vnmls" || Mnemonic == "vacge" ||
4458 Mnemonic == "vcge" || Mnemonic == "vclt" || Mnemonic == "vacgt" ||
4459 Mnemonic == "vcgt" || Mnemonic == "vcle" || Mnemonic == "smlal" ||
4460 Mnemonic == "umaal" || Mnemonic == "umlal" || Mnemonic == "vabal" ||
4461 Mnemonic == "vmlal" || Mnemonic == "vpadal" || Mnemonic == "vqdmlal" ||
4462 Mnemonic == "fmuls")
4465 // First, split out any predication code. Ignore mnemonics we know aren't
4466 // predicated but do have a carry-set and so weren't caught above.
4467 if (Mnemonic != "adcs" && Mnemonic != "bics" && Mnemonic != "movs" &&
4468 Mnemonic != "muls" && Mnemonic != "smlals" && Mnemonic != "smulls" &&
4469 Mnemonic != "umlals" && Mnemonic != "umulls" && Mnemonic != "lsls" &&
4470 Mnemonic != "sbcs" && Mnemonic != "rscs") {
4471 unsigned CC = StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2))
4472 .Case("eq", ARMCC::EQ)
4473 .Case("ne", ARMCC::NE)
4474 .Case("hs", ARMCC::HS)
4475 .Case("cs", ARMCC::HS)
4476 .Case("lo", ARMCC::LO)
4477 .Case("cc", ARMCC::LO)
4478 .Case("mi", ARMCC::MI)
4479 .Case("pl", ARMCC::PL)
4480 .Case("vs", ARMCC::VS)
4481 .Case("vc", ARMCC::VC)
4482 .Case("hi", ARMCC::HI)
4483 .Case("ls", ARMCC::LS)
4484 .Case("ge", ARMCC::GE)
4485 .Case("lt", ARMCC::LT)
4486 .Case("gt", ARMCC::GT)
4487 .Case("le", ARMCC::LE)
4488 .Case("al", ARMCC::AL)
4491 Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 2);
4492 PredicationCode = CC;
4496 // Next, determine if we have a carry setting bit. We explicitly ignore all
4497 // the instructions we know end in 's'.
4498 if (Mnemonic.endswith("s") &&
4499 !(Mnemonic == "cps" || Mnemonic == "mls" ||
4500 Mnemonic == "mrs" || Mnemonic == "smmls" || Mnemonic == "vabs" ||
4501 Mnemonic == "vcls" || Mnemonic == "vmls" || Mnemonic == "vmrs" ||
4502 Mnemonic == "vnmls" || Mnemonic == "vqabs" || Mnemonic == "vrecps" ||
4503 Mnemonic == "vrsqrts" || Mnemonic == "srs" || Mnemonic == "flds" ||
4504 Mnemonic == "fmrs" || Mnemonic == "fsqrts" || Mnemonic == "fsubs" ||
4505 Mnemonic == "fsts" || Mnemonic == "fcpys" || Mnemonic == "fdivs" ||
4506 Mnemonic == "fmuls" || Mnemonic == "fcmps" ||
4507 (Mnemonic == "movs" && isThumb()))) {
4508 Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 1);
4509 CarrySetting = true;
4512 // The "cps" instruction can have a interrupt mode operand which is glued into
4513 // the mnemonic. Check if this is the case, split it and parse the imod op
4514 if (Mnemonic.startswith("cps")) {
4515 // Split out any imod code.
4517 StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2, 2))
4518 .Case("ie", ARM_PROC::IE)
4519 .Case("id", ARM_PROC::ID)
4522 Mnemonic = Mnemonic.slice(0, Mnemonic.size()-2);
4523 ProcessorIMod = IMod;
4527 // The "it" instruction has the condition mask on the end of the mnemonic.
4528 if (Mnemonic.startswith("it")) {
4529 ITMask = Mnemonic.slice(2, Mnemonic.size());
4530 Mnemonic = Mnemonic.slice(0, 2);
4536 /// \brief Given a canonical mnemonic, determine if the instruction ever allows
4537 /// inclusion of carry set or predication code operands.
4539 // FIXME: It would be nice to autogen this.
4541 getMnemonicAcceptInfo(StringRef Mnemonic, bool &CanAcceptCarrySet,
4542 bool &CanAcceptPredicationCode) {
4543 if (Mnemonic == "and" || Mnemonic == "lsl" || Mnemonic == "lsr" ||
4544 Mnemonic == "rrx" || Mnemonic == "ror" || Mnemonic == "sub" ||
4545 Mnemonic == "add" || Mnemonic == "adc" ||
4546 Mnemonic == "mul" || Mnemonic == "bic" || Mnemonic == "asr" ||
4547 Mnemonic == "orr" || Mnemonic == "mvn" ||
4548 Mnemonic == "rsb" || Mnemonic == "rsc" || Mnemonic == "orn" ||
4549 Mnemonic == "sbc" || Mnemonic == "eor" || Mnemonic == "neg" ||
4550 (!isThumb() && (Mnemonic == "smull" || Mnemonic == "mov" ||
4551 Mnemonic == "mla" || Mnemonic == "smlal" ||
4552 Mnemonic == "umlal" || Mnemonic == "umull"))) {
4553 CanAcceptCarrySet = true;
4555 CanAcceptCarrySet = false;
4557 if (Mnemonic == "cbnz" || Mnemonic == "setend" || Mnemonic == "dmb" ||
4558 Mnemonic == "cps" || Mnemonic == "mcr2" || Mnemonic == "it" ||
4559 Mnemonic == "mcrr2" || Mnemonic == "cbz" || Mnemonic == "cdp2" ||
4560 Mnemonic == "trap" || Mnemonic == "mrc2" || Mnemonic == "mrrc2" ||
4561 Mnemonic == "dsb" || Mnemonic == "isb" || Mnemonic == "setend" ||
4562 (Mnemonic == "clrex" && !isThumb()) ||
4563 (Mnemonic == "nop" && isThumbOne()) ||
4564 ((Mnemonic == "pld" || Mnemonic == "pli" || Mnemonic == "pldw" ||
4565 Mnemonic == "ldc2" || Mnemonic == "ldc2l" ||
4566 Mnemonic == "stc2" || Mnemonic == "stc2l") && !isThumb()) ||
4567 ((Mnemonic.startswith("rfe") || Mnemonic.startswith("srs")) &&
4569 Mnemonic.startswith("cps") || (Mnemonic == "movs" && isThumbOne())) {
4570 CanAcceptPredicationCode = false;
4572 CanAcceptPredicationCode = true;
4575 if (Mnemonic == "bkpt" || Mnemonic == "mcr" || Mnemonic == "mcrr" ||
4576 Mnemonic == "mrc" || Mnemonic == "mrrc" || Mnemonic == "cdp")
4577 CanAcceptPredicationCode = false;
4581 bool ARMAsmParser::shouldOmitCCOutOperand(StringRef Mnemonic,
4582 SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4583 // FIXME: This is all horribly hacky. We really need a better way to deal
4584 // with optional operands like this in the matcher table.
4586 // The 'mov' mnemonic is special. One variant has a cc_out operand, while
4587 // another does not. Specifically, the MOVW instruction does not. So we
4588 // special case it here and remove the defaulted (non-setting) cc_out
4589 // operand if that's the instruction we're trying to match.
4591 // We do this as post-processing of the explicit operands rather than just
4592 // conditionally adding the cc_out in the first place because we need
4593 // to check the type of the parsed immediate operand.
4594 if (Mnemonic == "mov" && Operands.size() > 4 && !isThumb() &&
4595 !static_cast<ARMOperand*>(Operands[4])->isARMSOImm() &&
4596 static_cast<ARMOperand*>(Operands[4])->isImm0_65535Expr() &&
4597 static_cast<ARMOperand*>(Operands[1])->getReg() == 0)
4600 // Register-register 'add' for thumb does not have a cc_out operand
4601 // when there are only two register operands.
4602 if (isThumb() && Mnemonic == "add" && Operands.size() == 5 &&
4603 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4604 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4605 static_cast<ARMOperand*>(Operands[1])->getReg() == 0)
4607 // Register-register 'add' for thumb does not have a cc_out operand
4608 // when it's an ADD Rdm, SP, {Rdm|#imm0_255} instruction. We do
4609 // have to check the immediate range here since Thumb2 has a variant
4610 // that can handle a different range and has a cc_out operand.
4611 if (((isThumb() && Mnemonic == "add") ||
4612 (isThumbTwo() && 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[4])->getReg() == ARM::SP &&
4617 static_cast<ARMOperand*>(Operands[1])->getReg() == 0 &&
4618 (static_cast<ARMOperand*>(Operands[5])->isReg() ||
4619 static_cast<ARMOperand*>(Operands[5])->isImm0_1020s4()))
4621 // For Thumb2, add/sub immediate does not have a cc_out operand for the
4622 // imm0_4095 variant. That's the least-preferred variant when
4623 // selecting via the generic "add" mnemonic, so to know that we
4624 // should remove the cc_out operand, we have to explicitly check that
4625 // it's not one of the other variants. Ugh.
4626 if (isThumbTwo() && (Mnemonic == "add" || Mnemonic == "sub") &&
4627 Operands.size() == 6 &&
4628 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4629 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4630 static_cast<ARMOperand*>(Operands[5])->isImm()) {
4631 // Nest conditions rather than one big 'if' statement for readability.
4633 // If either register is a high reg, it's either one of the SP
4634 // variants (handled above) or a 32-bit encoding, so we just
4635 // check against T3.
4636 if ((!isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) ||
4637 !isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg())) &&
4638 static_cast<ARMOperand*>(Operands[5])->isT2SOImm())
4640 // If both registers are low, we're in an IT block, and the immediate is
4641 // in range, we should use encoding T1 instead, which has a cc_out.
4643 isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) &&
4644 isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()) &&
4645 static_cast<ARMOperand*>(Operands[5])->isImm0_7())
4648 // Otherwise, we use encoding T4, which does not have a cc_out
4653 // The thumb2 multiply instruction doesn't have a CCOut register, so
4654 // if we have a "mul" mnemonic in Thumb mode, check if we'll be able to
4655 // use the 16-bit encoding or not.
4656 if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 6 &&
4657 static_cast<ARMOperand*>(Operands[1])->getReg() == 0 &&
4658 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4659 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4660 static_cast<ARMOperand*>(Operands[5])->isReg() &&
4661 // If the registers aren't low regs, the destination reg isn't the
4662 // same as one of the source regs, or the cc_out operand is zero
4663 // outside of an IT block, we have to use the 32-bit encoding, so
4664 // remove the cc_out operand.
4665 (!isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) ||
4666 !isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()) ||
4667 !isARMLowRegister(static_cast<ARMOperand*>(Operands[5])->getReg()) ||
4669 (static_cast<ARMOperand*>(Operands[3])->getReg() !=
4670 static_cast<ARMOperand*>(Operands[5])->getReg() &&
4671 static_cast<ARMOperand*>(Operands[3])->getReg() !=
4672 static_cast<ARMOperand*>(Operands[4])->getReg())))
4675 // Also check the 'mul' syntax variant that doesn't specify an explicit
4676 // destination register.
4677 if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 5 &&
4678 static_cast<ARMOperand*>(Operands[1])->getReg() == 0 &&
4679 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4680 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4681 // If the registers aren't low regs or the cc_out operand is zero
4682 // outside of an IT block, we have to use the 32-bit encoding, so
4683 // remove the cc_out operand.
4684 (!isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) ||
4685 !isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()) ||
4691 // Register-register 'add/sub' for thumb does not have a cc_out operand
4692 // when it's an ADD/SUB SP, #imm. Be lenient on count since there's also
4693 // the "add/sub SP, SP, #imm" version. If the follow-up operands aren't
4694 // right, this will result in better diagnostics (which operand is off)
4696 if (isThumb() && (Mnemonic == "add" || Mnemonic == "sub") &&
4697 (Operands.size() == 5 || Operands.size() == 6) &&
4698 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4699 static_cast<ARMOperand*>(Operands[3])->getReg() == ARM::SP &&
4700 static_cast<ARMOperand*>(Operands[1])->getReg() == 0)
4706 static bool isDataTypeToken(StringRef Tok) {
4707 return Tok == ".8" || Tok == ".16" || Tok == ".32" || Tok == ".64" ||
4708 Tok == ".i8" || Tok == ".i16" || Tok == ".i32" || Tok == ".i64" ||
4709 Tok == ".u8" || Tok == ".u16" || Tok == ".u32" || Tok == ".u64" ||
4710 Tok == ".s8" || Tok == ".s16" || Tok == ".s32" || Tok == ".s64" ||
4711 Tok == ".p8" || Tok == ".p16" || Tok == ".f32" || Tok == ".f64" ||
4712 Tok == ".f" || Tok == ".d";
4715 // FIXME: This bit should probably be handled via an explicit match class
4716 // in the .td files that matches the suffix instead of having it be
4717 // a literal string token the way it is now.
4718 static bool doesIgnoreDataTypeSuffix(StringRef Mnemonic, StringRef DT) {
4719 return Mnemonic.startswith("vldm") || Mnemonic.startswith("vstm");
4722 static void applyMnemonicAliases(StringRef &Mnemonic, unsigned Features);
4723 /// Parse an arm instruction mnemonic followed by its operands.
4724 bool ARMAsmParser::ParseInstruction(StringRef Name, SMLoc NameLoc,
4725 SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4726 // Apply mnemonic aliases before doing anything else, as the destination
4727 // mnemnonic may include suffices and we want to handle them normally.
4728 // The generic tblgen'erated code does this later, at the start of
4729 // MatchInstructionImpl(), but that's too late for aliases that include
4730 // any sort of suffix.
4731 unsigned AvailableFeatures = getAvailableFeatures();
4732 applyMnemonicAliases(Name, AvailableFeatures);
4734 // First check for the ARM-specific .req directive.
4735 if (Parser.getTok().is(AsmToken::Identifier) &&
4736 Parser.getTok().getIdentifier() == ".req") {
4737 parseDirectiveReq(Name, NameLoc);
4738 // We always return 'error' for this, as we're done with this
4739 // statement and don't need to match the 'instruction."
4743 // Create the leading tokens for the mnemonic, split by '.' characters.
4744 size_t Start = 0, Next = Name.find('.');
4745 StringRef Mnemonic = Name.slice(Start, Next);
4747 // Split out the predication code and carry setting flag from the mnemonic.
4748 unsigned PredicationCode;
4749 unsigned ProcessorIMod;
4752 Mnemonic = splitMnemonic(Mnemonic, PredicationCode, CarrySetting,
4753 ProcessorIMod, ITMask);
4755 // In Thumb1, only the branch (B) instruction can be predicated.
4756 if (isThumbOne() && PredicationCode != ARMCC::AL && Mnemonic != "b") {
4757 Parser.EatToEndOfStatement();
4758 return Error(NameLoc, "conditional execution not supported in Thumb1");
4761 Operands.push_back(ARMOperand::CreateToken(Mnemonic, NameLoc));
4763 // Handle the IT instruction ITMask. Convert it to a bitmask. This
4764 // is the mask as it will be for the IT encoding if the conditional
4765 // encoding has a '1' as it's bit0 (i.e. 't' ==> '1'). In the case
4766 // where the conditional bit0 is zero, the instruction post-processing
4767 // will adjust the mask accordingly.
4768 if (Mnemonic == "it") {
4769 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + 2);
4770 if (ITMask.size() > 3) {
4771 Parser.EatToEndOfStatement();
4772 return Error(Loc, "too many conditions on IT instruction");
4775 for (unsigned i = ITMask.size(); i != 0; --i) {
4776 char pos = ITMask[i - 1];
4777 if (pos != 't' && pos != 'e') {
4778 Parser.EatToEndOfStatement();
4779 return Error(Loc, "illegal IT block condition mask '" + ITMask + "'");
4782 if (ITMask[i - 1] == 't')
4785 Operands.push_back(ARMOperand::CreateITMask(Mask, Loc));
4788 // FIXME: This is all a pretty gross hack. We should automatically handle
4789 // optional operands like this via tblgen.
4791 // Next, add the CCOut and ConditionCode operands, if needed.
4793 // For mnemonics which can ever incorporate a carry setting bit or predication
4794 // code, our matching model involves us always generating CCOut and
4795 // ConditionCode operands to match the mnemonic "as written" and then we let
4796 // the matcher deal with finding the right instruction or generating an
4797 // appropriate error.
4798 bool CanAcceptCarrySet, CanAcceptPredicationCode;
4799 getMnemonicAcceptInfo(Mnemonic, CanAcceptCarrySet, CanAcceptPredicationCode);
4801 // If we had a carry-set on an instruction that can't do that, issue an
4803 if (!CanAcceptCarrySet && CarrySetting) {
4804 Parser.EatToEndOfStatement();
4805 return Error(NameLoc, "instruction '" + Mnemonic +
4806 "' can not set flags, but 's' suffix specified");
4808 // If we had a predication code on an instruction that can't do that, issue an
4810 if (!CanAcceptPredicationCode && PredicationCode != ARMCC::AL) {
4811 Parser.EatToEndOfStatement();
4812 return Error(NameLoc, "instruction '" + Mnemonic +
4813 "' is not predicable, but condition code specified");
4816 // Add the carry setting operand, if necessary.
4817 if (CanAcceptCarrySet) {
4818 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size());
4819 Operands.push_back(ARMOperand::CreateCCOut(CarrySetting ? ARM::CPSR : 0,
4823 // Add the predication code operand, if necessary.
4824 if (CanAcceptPredicationCode) {
4825 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size() +
4827 Operands.push_back(ARMOperand::CreateCondCode(
4828 ARMCC::CondCodes(PredicationCode), Loc));
4831 // Add the processor imod operand, if necessary.
4832 if (ProcessorIMod) {
4833 Operands.push_back(ARMOperand::CreateImm(
4834 MCConstantExpr::Create(ProcessorIMod, getContext()),
4838 // Add the remaining tokens in the mnemonic.
4839 while (Next != StringRef::npos) {
4841 Next = Name.find('.', Start + 1);
4842 StringRef ExtraToken = Name.slice(Start, Next);
4844 // Some NEON instructions have an optional datatype suffix that is
4845 // completely ignored. Check for that.
4846 if (isDataTypeToken(ExtraToken) &&
4847 doesIgnoreDataTypeSuffix(Mnemonic, ExtraToken))
4850 if (ExtraToken != ".n") {
4851 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Start);
4852 Operands.push_back(ARMOperand::CreateToken(ExtraToken, Loc));
4856 // Read the remaining operands.
4857 if (getLexer().isNot(AsmToken::EndOfStatement)) {
4858 // Read the first operand.
4859 if (parseOperand(Operands, Mnemonic)) {
4860 Parser.EatToEndOfStatement();
4864 while (getLexer().is(AsmToken::Comma)) {
4865 Parser.Lex(); // Eat the comma.
4867 // Parse and remember the operand.
4868 if (parseOperand(Operands, Mnemonic)) {
4869 Parser.EatToEndOfStatement();
4875 if (getLexer().isNot(AsmToken::EndOfStatement)) {
4876 SMLoc Loc = getLexer().getLoc();
4877 Parser.EatToEndOfStatement();
4878 return Error(Loc, "unexpected token in argument list");
4881 Parser.Lex(); // Consume the EndOfStatement
4883 // Some instructions, mostly Thumb, have forms for the same mnemonic that
4884 // do and don't have a cc_out optional-def operand. With some spot-checks
4885 // of the operand list, we can figure out which variant we're trying to
4886 // parse and adjust accordingly before actually matching. We shouldn't ever
4887 // try to remove a cc_out operand that was explicitly set on the the
4888 // mnemonic, of course (CarrySetting == true). Reason number #317 the
4889 // table driven matcher doesn't fit well with the ARM instruction set.
4890 if (!CarrySetting && shouldOmitCCOutOperand(Mnemonic, Operands)) {
4891 ARMOperand *Op = static_cast<ARMOperand*>(Operands[1]);
4892 Operands.erase(Operands.begin() + 1);
4896 // ARM mode 'blx' need special handling, as the register operand version
4897 // is predicable, but the label operand version is not. So, we can't rely
4898 // on the Mnemonic based checking to correctly figure out when to put
4899 // a k_CondCode operand in the list. If we're trying to match the label
4900 // version, remove the k_CondCode operand here.
4901 if (!isThumb() && Mnemonic == "blx" && Operands.size() == 3 &&
4902 static_cast<ARMOperand*>(Operands[2])->isImm()) {
4903 ARMOperand *Op = static_cast<ARMOperand*>(Operands[1]);
4904 Operands.erase(Operands.begin() + 1);
4908 // The vector-compare-to-zero instructions have a literal token "#0" at
4909 // the end that comes to here as an immediate operand. Convert it to a
4910 // token to play nicely with the matcher.
4911 if ((Mnemonic == "vceq" || Mnemonic == "vcge" || Mnemonic == "vcgt" ||
4912 Mnemonic == "vcle" || Mnemonic == "vclt") && Operands.size() == 6 &&
4913 static_cast<ARMOperand*>(Operands[5])->isImm()) {
4914 ARMOperand *Op = static_cast<ARMOperand*>(Operands[5]);
4915 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op->getImm());
4916 if (CE && CE->getValue() == 0) {
4917 Operands.erase(Operands.begin() + 5);
4918 Operands.push_back(ARMOperand::CreateToken("#0", Op->getStartLoc()));
4922 // VCMP{E} does the same thing, but with a different operand count.
4923 if ((Mnemonic == "vcmp" || Mnemonic == "vcmpe") && Operands.size() == 5 &&
4924 static_cast<ARMOperand*>(Operands[4])->isImm()) {
4925 ARMOperand *Op = static_cast<ARMOperand*>(Operands[4]);
4926 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op->getImm());
4927 if (CE && CE->getValue() == 0) {
4928 Operands.erase(Operands.begin() + 4);
4929 Operands.push_back(ARMOperand::CreateToken("#0", Op->getStartLoc()));
4933 // Similarly, the Thumb1 "RSB" instruction has a literal "#0" on the
4934 // end. Convert it to a token here. Take care not to convert those
4935 // that should hit the Thumb2 encoding.
4936 if (Mnemonic == "rsb" && isThumb() && Operands.size() == 6 &&
4937 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4938 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4939 static_cast<ARMOperand*>(Operands[5])->isImm()) {
4940 ARMOperand *Op = static_cast<ARMOperand*>(Operands[5]);
4941 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op->getImm());
4942 if (CE && CE->getValue() == 0 &&
4944 // The cc_out operand matches the IT block.
4945 ((inITBlock() != CarrySetting) &&
4946 // Neither register operand is a high register.
4947 (isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) &&
4948 isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()))))){
4949 Operands.erase(Operands.begin() + 5);
4950 Operands.push_back(ARMOperand::CreateToken("#0", Op->getStartLoc()));
4958 // Validate context-sensitive operand constraints.
4960 // return 'true' if register list contains non-low GPR registers,
4961 // 'false' otherwise. If Reg is in the register list or is HiReg, set
4962 // 'containsReg' to true.
4963 static bool checkLowRegisterList(MCInst Inst, unsigned OpNo, unsigned Reg,
4964 unsigned HiReg, bool &containsReg) {
4965 containsReg = false;
4966 for (unsigned i = OpNo; i < Inst.getNumOperands(); ++i) {
4967 unsigned OpReg = Inst.getOperand(i).getReg();
4970 // Anything other than a low register isn't legal here.
4971 if (!isARMLowRegister(OpReg) && (!HiReg || OpReg != HiReg))
4977 // Check if the specified regisgter is in the register list of the inst,
4978 // starting at the indicated operand number.
4979 static bool listContainsReg(MCInst &Inst, unsigned OpNo, unsigned Reg) {
4980 for (unsigned i = OpNo; i < Inst.getNumOperands(); ++i) {
4981 unsigned OpReg = Inst.getOperand(i).getReg();
4988 // FIXME: We would really prefer to have MCInstrInfo (the wrapper around
4989 // the ARMInsts array) instead. Getting that here requires awkward
4990 // API changes, though. Better way?
4992 extern const MCInstrDesc ARMInsts[];
4994 static const MCInstrDesc &getInstDesc(unsigned Opcode) {
4995 return ARMInsts[Opcode];
4998 // FIXME: We would really like to be able to tablegen'erate this.
5000 validateInstruction(MCInst &Inst,
5001 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
5002 const MCInstrDesc &MCID = getInstDesc(Inst.getOpcode());
5003 SMLoc Loc = Operands[0]->getStartLoc();
5004 // Check the IT block state first.
5005 // NOTE: In Thumb mode, the BKPT instruction has the interesting property of
5006 // being allowed in IT blocks, but not being predicable. It just always
5008 if (inITBlock() && Inst.getOpcode() != ARM::tBKPT) {
5010 if (ITState.FirstCond)
5011 ITState.FirstCond = false;
5013 bit = (ITState.Mask >> (5 - ITState.CurPosition)) & 1;
5014 // The instruction must be predicable.
5015 if (!MCID.isPredicable())
5016 return Error(Loc, "instructions in IT block must be predicable");
5017 unsigned Cond = Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm();
5018 unsigned ITCond = bit ? ITState.Cond :
5019 ARMCC::getOppositeCondition(ITState.Cond);
5020 if (Cond != ITCond) {
5021 // Find the condition code Operand to get its SMLoc information.
5023 for (unsigned i = 1; i < Operands.size(); ++i)
5024 if (static_cast<ARMOperand*>(Operands[i])->isCondCode())
5025 CondLoc = Operands[i]->getStartLoc();
5026 return Error(CondLoc, "incorrect condition in IT block; got '" +
5027 StringRef(ARMCondCodeToString(ARMCC::CondCodes(Cond))) +
5028 "', but expected '" +
5029 ARMCondCodeToString(ARMCC::CondCodes(ITCond)) + "'");
5031 // Check for non-'al' condition codes outside of the IT block.
5032 } else if (isThumbTwo() && MCID.isPredicable() &&
5033 Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm() !=
5034 ARMCC::AL && Inst.getOpcode() != ARM::tB &&
5035 Inst.getOpcode() != ARM::t2B)
5036 return Error(Loc, "predicated instructions must be in IT block");
5038 switch (Inst.getOpcode()) {
5041 case ARM::LDRD_POST:
5043 // Rt2 must be Rt + 1.
5044 unsigned Rt = getARMRegisterNumbering(Inst.getOperand(0).getReg());
5045 unsigned Rt2 = getARMRegisterNumbering(Inst.getOperand(1).getReg());
5047 return Error(Operands[3]->getStartLoc(),
5048 "destination operands must be sequential");
5052 // Rt2 must be Rt + 1.
5053 unsigned Rt = getARMRegisterNumbering(Inst.getOperand(0).getReg());
5054 unsigned Rt2 = getARMRegisterNumbering(Inst.getOperand(1).getReg());
5056 return Error(Operands[3]->getStartLoc(),
5057 "source operands must be sequential");
5061 case ARM::STRD_POST:
5063 // Rt2 must be Rt + 1.
5064 unsigned Rt = getARMRegisterNumbering(Inst.getOperand(1).getReg());
5065 unsigned Rt2 = getARMRegisterNumbering(Inst.getOperand(2).getReg());
5067 return Error(Operands[3]->getStartLoc(),
5068 "source operands must be sequential");
5073 // width must be in range [1, 32-lsb]
5074 unsigned lsb = Inst.getOperand(2).getImm();
5075 unsigned widthm1 = Inst.getOperand(3).getImm();
5076 if (widthm1 >= 32 - lsb)
5077 return Error(Operands[5]->getStartLoc(),
5078 "bitfield width must be in range [1,32-lsb]");
5082 // If we're parsing Thumb2, the .w variant is available and handles
5083 // most cases that are normally illegal for a Thumb1 LDM
5084 // instruction. We'll make the transformation in processInstruction()
5087 // Thumb LDM instructions are writeback iff the base register is not
5088 // in the register list.
5089 unsigned Rn = Inst.getOperand(0).getReg();
5090 bool hasWritebackToken =
5091 (static_cast<ARMOperand*>(Operands[3])->isToken() &&
5092 static_cast<ARMOperand*>(Operands[3])->getToken() == "!");
5093 bool listContainsBase;
5094 if (checkLowRegisterList(Inst, 3, Rn, 0, listContainsBase) && !isThumbTwo())
5095 return Error(Operands[3 + hasWritebackToken]->getStartLoc(),
5096 "registers must be in range r0-r7");
5097 // If we should have writeback, then there should be a '!' token.
5098 if (!listContainsBase && !hasWritebackToken && !isThumbTwo())
5099 return Error(Operands[2]->getStartLoc(),
5100 "writeback operator '!' expected");
5101 // If we should not have writeback, there must not be a '!'. This is
5102 // true even for the 32-bit wide encodings.
5103 if (listContainsBase && hasWritebackToken)
5104 return Error(Operands[3]->getStartLoc(),
5105 "writeback operator '!' not allowed when base register "
5106 "in register list");
5110 case ARM::t2LDMIA_UPD: {
5111 if (listContainsReg(Inst, 3, Inst.getOperand(0).getReg()))
5112 return Error(Operands[4]->getStartLoc(),
5113 "writeback operator '!' not allowed when base register "
5114 "in register list");
5117 // Like for ldm/stm, push and pop have hi-reg handling version in Thumb2,
5118 // so only issue a diagnostic for thumb1. The instructions will be
5119 // switched to the t2 encodings in processInstruction() if necessary.
5121 bool listContainsBase;
5122 if (checkLowRegisterList(Inst, 2, 0, ARM::PC, listContainsBase) &&
5124 return Error(Operands[2]->getStartLoc(),
5125 "registers must be in range r0-r7 or pc");
5129 bool listContainsBase;
5130 if (checkLowRegisterList(Inst, 2, 0, ARM::LR, listContainsBase) &&
5132 return Error(Operands[2]->getStartLoc(),
5133 "registers must be in range r0-r7 or lr");
5136 case ARM::tSTMIA_UPD: {
5137 bool listContainsBase;
5138 if (checkLowRegisterList(Inst, 4, 0, 0, listContainsBase) && !isThumbTwo())
5139 return Error(Operands[4]->getStartLoc(),
5140 "registers must be in range r0-r7");
5148 static unsigned getRealVSTLNOpcode(unsigned Opc, unsigned &Spacing) {
5150 default: assert(0 && "unexpected opcode!");
5152 case ARM::VST1LNdWB_fixed_Asm_8: case ARM::VST1LNdWB_fixed_Asm_P8:
5153 case ARM::VST1LNdWB_fixed_Asm_I8: case ARM::VST1LNdWB_fixed_Asm_S8:
5154 case ARM::VST1LNdWB_fixed_Asm_U8:
5156 return ARM::VST1LNd8_UPD;
5157 case ARM::VST1LNdWB_fixed_Asm_16: case ARM::VST1LNdWB_fixed_Asm_P16:
5158 case ARM::VST1LNdWB_fixed_Asm_I16: case ARM::VST1LNdWB_fixed_Asm_S16:
5159 case ARM::VST1LNdWB_fixed_Asm_U16:
5161 return ARM::VST1LNd16_UPD;
5162 case ARM::VST1LNdWB_fixed_Asm_32: case ARM::VST1LNdWB_fixed_Asm_F:
5163 case ARM::VST1LNdWB_fixed_Asm_F32: case ARM::VST1LNdWB_fixed_Asm_I32:
5164 case ARM::VST1LNdWB_fixed_Asm_S32: case ARM::VST1LNdWB_fixed_Asm_U32:
5166 return ARM::VST1LNd32_UPD;
5167 case ARM::VST1LNdWB_register_Asm_8: case ARM::VST1LNdWB_register_Asm_P8:
5168 case ARM::VST1LNdWB_register_Asm_I8: case ARM::VST1LNdWB_register_Asm_S8:
5169 case ARM::VST1LNdWB_register_Asm_U8:
5171 return ARM::VST1LNd8_UPD;
5172 case ARM::VST1LNdWB_register_Asm_16: case ARM::VST1LNdWB_register_Asm_P16:
5173 case ARM::VST1LNdWB_register_Asm_I16: case ARM::VST1LNdWB_register_Asm_S16:
5174 case ARM::VST1LNdWB_register_Asm_U16:
5176 return ARM::VST1LNd16_UPD;
5177 case ARM::VST1LNdWB_register_Asm_32: case ARM::VST1LNdWB_register_Asm_F:
5178 case ARM::VST1LNdWB_register_Asm_F32: case ARM::VST1LNdWB_register_Asm_I32:
5179 case ARM::VST1LNdWB_register_Asm_S32: case ARM::VST1LNdWB_register_Asm_U32:
5181 return ARM::VST1LNd32_UPD;
5182 case ARM::VST1LNdAsm_8: case ARM::VST1LNdAsm_P8:
5183 case ARM::VST1LNdAsm_I8: case ARM::VST1LNdAsm_S8:
5184 case ARM::VST1LNdAsm_U8:
5186 return ARM::VST1LNd8;
5187 case ARM::VST1LNdAsm_16: case ARM::VST1LNdAsm_P16:
5188 case ARM::VST1LNdAsm_I16: case ARM::VST1LNdAsm_S16:
5189 case ARM::VST1LNdAsm_U16:
5191 return ARM::VST1LNd16;
5192 case ARM::VST1LNdAsm_32: case ARM::VST1LNdAsm_F:
5193 case ARM::VST1LNdAsm_F32: case ARM::VST1LNdAsm_I32:
5194 case ARM::VST1LNdAsm_S32: case ARM::VST1LNdAsm_U32:
5196 return ARM::VST1LNd32;
5199 case ARM::VST2LNdWB_fixed_Asm_8: case ARM::VST2LNdWB_fixed_Asm_P8:
5200 case ARM::VST2LNdWB_fixed_Asm_I8: case ARM::VST2LNdWB_fixed_Asm_S8:
5201 case ARM::VST2LNdWB_fixed_Asm_U8:
5203 return ARM::VST2LNd8_UPD;
5204 case ARM::VST2LNdWB_fixed_Asm_16: case ARM::VST2LNdWB_fixed_Asm_P16:
5205 case ARM::VST2LNdWB_fixed_Asm_I16: case ARM::VST2LNdWB_fixed_Asm_S16:
5206 case ARM::VST2LNdWB_fixed_Asm_U16:
5208 return ARM::VST2LNd16_UPD;
5209 case ARM::VST2LNdWB_fixed_Asm_32: case ARM::VST2LNdWB_fixed_Asm_F:
5210 case ARM::VST2LNdWB_fixed_Asm_F32: case ARM::VST2LNdWB_fixed_Asm_I32:
5211 case ARM::VST2LNdWB_fixed_Asm_S32: case ARM::VST2LNdWB_fixed_Asm_U32:
5213 return ARM::VST2LNd32_UPD;
5214 case ARM::VST2LNqWB_fixed_Asm_16: case ARM::VST2LNqWB_fixed_Asm_P16:
5215 case ARM::VST2LNqWB_fixed_Asm_I16: case ARM::VST2LNqWB_fixed_Asm_S16:
5216 case ARM::VST2LNqWB_fixed_Asm_U16:
5218 return ARM::VST2LNq16_UPD;
5219 case ARM::VST2LNqWB_fixed_Asm_32: case ARM::VST2LNqWB_fixed_Asm_F:
5220 case ARM::VST2LNqWB_fixed_Asm_F32: case ARM::VST2LNqWB_fixed_Asm_I32:
5221 case ARM::VST2LNqWB_fixed_Asm_S32: case ARM::VST2LNqWB_fixed_Asm_U32:
5223 return ARM::VST2LNq32_UPD;
5225 case ARM::VST2LNdWB_register_Asm_8: case ARM::VST2LNdWB_register_Asm_P8:
5226 case ARM::VST2LNdWB_register_Asm_I8: case ARM::VST2LNdWB_register_Asm_S8:
5227 case ARM::VST2LNdWB_register_Asm_U8:
5229 return ARM::VST2LNd8_UPD;
5230 case ARM::VST2LNdWB_register_Asm_16: case ARM::VST2LNdWB_register_Asm_P16:
5231 case ARM::VST2LNdWB_register_Asm_I16: case ARM::VST2LNdWB_register_Asm_S16:
5232 case ARM::VST2LNdWB_register_Asm_U16:
5234 return ARM::VST2LNd16_UPD;
5235 case ARM::VST2LNdWB_register_Asm_32: case ARM::VST2LNdWB_register_Asm_F:
5236 case ARM::VST2LNdWB_register_Asm_F32: case ARM::VST2LNdWB_register_Asm_I32:
5237 case ARM::VST2LNdWB_register_Asm_S32: case ARM::VST2LNdWB_register_Asm_U32:
5239 return ARM::VST2LNd32_UPD;
5240 case ARM::VST2LNqWB_register_Asm_16: case ARM::VST2LNqWB_register_Asm_P16:
5241 case ARM::VST2LNqWB_register_Asm_I16: case ARM::VST2LNqWB_register_Asm_S16:
5242 case ARM::VST2LNqWB_register_Asm_U16:
5244 return ARM::VST2LNq16_UPD;
5245 case ARM::VST2LNqWB_register_Asm_32: case ARM::VST2LNqWB_register_Asm_F:
5246 case ARM::VST2LNqWB_register_Asm_F32: case ARM::VST2LNqWB_register_Asm_I32:
5247 case ARM::VST2LNqWB_register_Asm_S32: case ARM::VST2LNqWB_register_Asm_U32:
5249 return ARM::VST2LNq32_UPD;
5251 case ARM::VST2LNdAsm_8: case ARM::VST2LNdAsm_P8:
5252 case ARM::VST2LNdAsm_I8: case ARM::VST2LNdAsm_S8:
5253 case ARM::VST2LNdAsm_U8:
5255 return ARM::VST2LNd8;
5256 case ARM::VST2LNdAsm_16: case ARM::VST2LNdAsm_P16:
5257 case ARM::VST2LNdAsm_I16: case ARM::VST2LNdAsm_S16:
5258 case ARM::VST2LNdAsm_U16:
5260 return ARM::VST2LNd16;
5261 case ARM::VST2LNdAsm_32: case ARM::VST2LNdAsm_F:
5262 case ARM::VST2LNdAsm_F32: case ARM::VST2LNdAsm_I32:
5263 case ARM::VST2LNdAsm_S32: case ARM::VST2LNdAsm_U32:
5265 return ARM::VST2LNd32;
5266 case ARM::VST2LNqAsm_16: case ARM::VST2LNqAsm_P16:
5267 case ARM::VST2LNqAsm_I16: case ARM::VST2LNqAsm_S16:
5268 case ARM::VST2LNqAsm_U16:
5270 return ARM::VST2LNq16;
5271 case ARM::VST2LNqAsm_32: case ARM::VST2LNqAsm_F:
5272 case ARM::VST2LNqAsm_F32: case ARM::VST2LNqAsm_I32:
5273 case ARM::VST2LNqAsm_S32: case ARM::VST2LNqAsm_U32:
5275 return ARM::VST2LNq32;
5279 static unsigned getRealVLDLNOpcode(unsigned Opc, unsigned &Spacing) {
5281 default: assert(0 && "unexpected opcode!");
5283 case ARM::VLD1LNdWB_fixed_Asm_8: case ARM::VLD1LNdWB_fixed_Asm_P8:
5284 case ARM::VLD1LNdWB_fixed_Asm_I8: case ARM::VLD1LNdWB_fixed_Asm_S8:
5285 case ARM::VLD1LNdWB_fixed_Asm_U8:
5287 return ARM::VLD1LNd8_UPD;
5288 case ARM::VLD1LNdWB_fixed_Asm_16: case ARM::VLD1LNdWB_fixed_Asm_P16:
5289 case ARM::VLD1LNdWB_fixed_Asm_I16: case ARM::VLD1LNdWB_fixed_Asm_S16:
5290 case ARM::VLD1LNdWB_fixed_Asm_U16:
5292 return ARM::VLD1LNd16_UPD;
5293 case ARM::VLD1LNdWB_fixed_Asm_32: case ARM::VLD1LNdWB_fixed_Asm_F:
5294 case ARM::VLD1LNdWB_fixed_Asm_F32: case ARM::VLD1LNdWB_fixed_Asm_I32:
5295 case ARM::VLD1LNdWB_fixed_Asm_S32: case ARM::VLD1LNdWB_fixed_Asm_U32:
5297 return ARM::VLD1LNd32_UPD;
5298 case ARM::VLD1LNdWB_register_Asm_8: case ARM::VLD1LNdWB_register_Asm_P8:
5299 case ARM::VLD1LNdWB_register_Asm_I8: case ARM::VLD1LNdWB_register_Asm_S8:
5300 case ARM::VLD1LNdWB_register_Asm_U8:
5302 return ARM::VLD1LNd8_UPD;
5303 case ARM::VLD1LNdWB_register_Asm_16: case ARM::VLD1LNdWB_register_Asm_P16:
5304 case ARM::VLD1LNdWB_register_Asm_I16: case ARM::VLD1LNdWB_register_Asm_S16:
5305 case ARM::VLD1LNdWB_register_Asm_U16:
5307 return ARM::VLD1LNd16_UPD;
5308 case ARM::VLD1LNdWB_register_Asm_32: case ARM::VLD1LNdWB_register_Asm_F:
5309 case ARM::VLD1LNdWB_register_Asm_F32: case ARM::VLD1LNdWB_register_Asm_I32:
5310 case ARM::VLD1LNdWB_register_Asm_S32: case ARM::VLD1LNdWB_register_Asm_U32:
5312 return ARM::VLD1LNd32_UPD;
5313 case ARM::VLD1LNdAsm_8: case ARM::VLD1LNdAsm_P8:
5314 case ARM::VLD1LNdAsm_I8: case ARM::VLD1LNdAsm_S8:
5315 case ARM::VLD1LNdAsm_U8:
5317 return ARM::VLD1LNd8;
5318 case ARM::VLD1LNdAsm_16: case ARM::VLD1LNdAsm_P16:
5319 case ARM::VLD1LNdAsm_I16: case ARM::VLD1LNdAsm_S16:
5320 case ARM::VLD1LNdAsm_U16:
5322 return ARM::VLD1LNd16;
5323 case ARM::VLD1LNdAsm_32: case ARM::VLD1LNdAsm_F:
5324 case ARM::VLD1LNdAsm_F32: case ARM::VLD1LNdAsm_I32:
5325 case ARM::VLD1LNdAsm_S32: case ARM::VLD1LNdAsm_U32:
5327 return ARM::VLD1LNd32;
5330 case ARM::VLD2LNdWB_fixed_Asm_8: case ARM::VLD2LNdWB_fixed_Asm_P8:
5331 case ARM::VLD2LNdWB_fixed_Asm_I8: case ARM::VLD2LNdWB_fixed_Asm_S8:
5332 case ARM::VLD2LNdWB_fixed_Asm_U8:
5334 return ARM::VLD2LNd8_UPD;
5335 case ARM::VLD2LNdWB_fixed_Asm_16: case ARM::VLD2LNdWB_fixed_Asm_P16:
5336 case ARM::VLD2LNdWB_fixed_Asm_I16: case ARM::VLD2LNdWB_fixed_Asm_S16:
5337 case ARM::VLD2LNdWB_fixed_Asm_U16:
5339 return ARM::VLD2LNd16_UPD;
5340 case ARM::VLD2LNdWB_fixed_Asm_32: case ARM::VLD2LNdWB_fixed_Asm_F:
5341 case ARM::VLD2LNdWB_fixed_Asm_F32: case ARM::VLD2LNdWB_fixed_Asm_I32:
5342 case ARM::VLD2LNdWB_fixed_Asm_S32: case ARM::VLD2LNdWB_fixed_Asm_U32:
5344 return ARM::VLD2LNd32_UPD;
5345 case ARM::VLD2LNqWB_fixed_Asm_16: case ARM::VLD2LNqWB_fixed_Asm_P16:
5346 case ARM::VLD2LNqWB_fixed_Asm_I16: case ARM::VLD2LNqWB_fixed_Asm_S16:
5347 case ARM::VLD2LNqWB_fixed_Asm_U16:
5349 return ARM::VLD2LNq16_UPD;
5350 case ARM::VLD2LNqWB_fixed_Asm_32: case ARM::VLD2LNqWB_fixed_Asm_F:
5351 case ARM::VLD2LNqWB_fixed_Asm_F32: case ARM::VLD2LNqWB_fixed_Asm_I32:
5352 case ARM::VLD2LNqWB_fixed_Asm_S32: case ARM::VLD2LNqWB_fixed_Asm_U32:
5354 return ARM::VLD2LNq32_UPD;
5355 case ARM::VLD2LNdWB_register_Asm_8: case ARM::VLD2LNdWB_register_Asm_P8:
5356 case ARM::VLD2LNdWB_register_Asm_I8: case ARM::VLD2LNdWB_register_Asm_S8:
5357 case ARM::VLD2LNdWB_register_Asm_U8:
5359 return ARM::VLD2LNd8_UPD;
5360 case ARM::VLD2LNdWB_register_Asm_16: case ARM::VLD2LNdWB_register_Asm_P16:
5361 case ARM::VLD2LNdWB_register_Asm_I16: case ARM::VLD2LNdWB_register_Asm_S16:
5362 case ARM::VLD2LNdWB_register_Asm_U16:
5364 return ARM::VLD2LNd16_UPD;
5365 case ARM::VLD2LNdWB_register_Asm_32: case ARM::VLD2LNdWB_register_Asm_F:
5366 case ARM::VLD2LNdWB_register_Asm_F32: case ARM::VLD2LNdWB_register_Asm_I32:
5367 case ARM::VLD2LNdWB_register_Asm_S32: case ARM::VLD2LNdWB_register_Asm_U32:
5369 return ARM::VLD2LNd32_UPD;
5370 case ARM::VLD2LNqWB_register_Asm_16: case ARM::VLD2LNqWB_register_Asm_P16:
5371 case ARM::VLD2LNqWB_register_Asm_I16: case ARM::VLD2LNqWB_register_Asm_S16:
5372 case ARM::VLD2LNqWB_register_Asm_U16:
5374 return ARM::VLD2LNq16_UPD;
5375 case ARM::VLD2LNqWB_register_Asm_32: case ARM::VLD2LNqWB_register_Asm_F:
5376 case ARM::VLD2LNqWB_register_Asm_F32: case ARM::VLD2LNqWB_register_Asm_I32:
5377 case ARM::VLD2LNqWB_register_Asm_S32: case ARM::VLD2LNqWB_register_Asm_U32:
5379 return ARM::VLD2LNq32_UPD;
5380 case ARM::VLD2LNdAsm_8: case ARM::VLD2LNdAsm_P8:
5381 case ARM::VLD2LNdAsm_I8: case ARM::VLD2LNdAsm_S8:
5382 case ARM::VLD2LNdAsm_U8:
5384 return ARM::VLD2LNd8;
5385 case ARM::VLD2LNdAsm_16: case ARM::VLD2LNdAsm_P16:
5386 case ARM::VLD2LNdAsm_I16: case ARM::VLD2LNdAsm_S16:
5387 case ARM::VLD2LNdAsm_U16:
5389 return ARM::VLD2LNd16;
5390 case ARM::VLD2LNdAsm_32: case ARM::VLD2LNdAsm_F:
5391 case ARM::VLD2LNdAsm_F32: case ARM::VLD2LNdAsm_I32:
5392 case ARM::VLD2LNdAsm_S32: case ARM::VLD2LNdAsm_U32:
5394 return ARM::VLD2LNd32;
5395 case ARM::VLD2LNqAsm_16: case ARM::VLD2LNqAsm_P16:
5396 case ARM::VLD2LNqAsm_I16: case ARM::VLD2LNqAsm_S16:
5397 case ARM::VLD2LNqAsm_U16:
5399 return ARM::VLD2LNq16;
5400 case ARM::VLD2LNqAsm_32: case ARM::VLD2LNqAsm_F:
5401 case ARM::VLD2LNqAsm_F32: case ARM::VLD2LNqAsm_I32:
5402 case ARM::VLD2LNqAsm_S32: case ARM::VLD2LNqAsm_U32:
5404 return ARM::VLD2LNq32;
5409 processInstruction(MCInst &Inst,
5410 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
5411 switch (Inst.getOpcode()) {
5412 // Aliases for alternate PC+imm syntax of LDR instructions.
5413 case ARM::t2LDRpcrel:
5414 Inst.setOpcode(ARM::t2LDRpci);
5416 case ARM::t2LDRBpcrel:
5417 Inst.setOpcode(ARM::t2LDRBpci);
5419 case ARM::t2LDRHpcrel:
5420 Inst.setOpcode(ARM::t2LDRHpci);
5422 case ARM::t2LDRSBpcrel:
5423 Inst.setOpcode(ARM::t2LDRSBpci);
5425 case ARM::t2LDRSHpcrel:
5426 Inst.setOpcode(ARM::t2LDRSHpci);
5428 // Handle NEON VST complex aliases.
5429 case ARM::VST1LNdWB_register_Asm_8: case ARM::VST1LNdWB_register_Asm_P8:
5430 case ARM::VST1LNdWB_register_Asm_I8: case ARM::VST1LNdWB_register_Asm_S8:
5431 case ARM::VST1LNdWB_register_Asm_U8: case ARM::VST1LNdWB_register_Asm_16:
5432 case ARM::VST1LNdWB_register_Asm_P16: case ARM::VST1LNdWB_register_Asm_I16:
5433 case ARM::VST1LNdWB_register_Asm_S16: case ARM::VST1LNdWB_register_Asm_U16:
5434 case ARM::VST1LNdWB_register_Asm_32: case ARM::VST1LNdWB_register_Asm_F:
5435 case ARM::VST1LNdWB_register_Asm_F32: case ARM::VST1LNdWB_register_Asm_I32:
5436 case ARM::VST1LNdWB_register_Asm_S32: case ARM::VST1LNdWB_register_Asm_U32: {
5438 // Shuffle the operands around so the lane index operand is in the
5441 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5442 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5443 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5444 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5445 TmpInst.addOperand(Inst.getOperand(4)); // Rm
5446 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5447 TmpInst.addOperand(Inst.getOperand(1)); // lane
5448 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
5449 TmpInst.addOperand(Inst.getOperand(6));
5454 case ARM::VST2LNdWB_register_Asm_8: case ARM::VST2LNdWB_register_Asm_P8:
5455 case ARM::VST2LNdWB_register_Asm_I8: case ARM::VST2LNdWB_register_Asm_S8:
5456 case ARM::VST2LNdWB_register_Asm_U8: case ARM::VST2LNdWB_register_Asm_16:
5457 case ARM::VST2LNdWB_register_Asm_P16: case ARM::VST2LNdWB_register_Asm_I16:
5458 case ARM::VST2LNdWB_register_Asm_S16: case ARM::VST2LNdWB_register_Asm_U16:
5459 case ARM::VST2LNdWB_register_Asm_32: case ARM::VST2LNdWB_register_Asm_F:
5460 case ARM::VST2LNdWB_register_Asm_F32: case ARM::VST2LNdWB_register_Asm_I32:
5461 case ARM::VST2LNdWB_register_Asm_S32: case ARM::VST2LNdWB_register_Asm_U32:
5462 case ARM::VST2LNqWB_register_Asm_16: case ARM::VST2LNqWB_register_Asm_P16:
5463 case ARM::VST2LNqWB_register_Asm_I16: case ARM::VST2LNqWB_register_Asm_S16:
5464 case ARM::VST2LNqWB_register_Asm_U16: case ARM::VST2LNqWB_register_Asm_32:
5465 case ARM::VST2LNqWB_register_Asm_F: case ARM::VST2LNqWB_register_Asm_F32:
5466 case ARM::VST2LNqWB_register_Asm_I32: case ARM::VST2LNqWB_register_Asm_S32:
5467 case ARM::VST2LNqWB_register_Asm_U32: {
5469 // Shuffle the operands around so the lane index operand is in the
5472 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5473 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5474 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5475 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5476 TmpInst.addOperand(Inst.getOperand(4)); // Rm
5477 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5478 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5480 TmpInst.addOperand(Inst.getOperand(1)); // lane
5481 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
5482 TmpInst.addOperand(Inst.getOperand(6));
5486 case ARM::VST1LNdWB_fixed_Asm_8: case ARM::VST1LNdWB_fixed_Asm_P8:
5487 case ARM::VST1LNdWB_fixed_Asm_I8: case ARM::VST1LNdWB_fixed_Asm_S8:
5488 case ARM::VST1LNdWB_fixed_Asm_U8: case ARM::VST1LNdWB_fixed_Asm_16:
5489 case ARM::VST1LNdWB_fixed_Asm_P16: case ARM::VST1LNdWB_fixed_Asm_I16:
5490 case ARM::VST1LNdWB_fixed_Asm_S16: case ARM::VST1LNdWB_fixed_Asm_U16:
5491 case ARM::VST1LNdWB_fixed_Asm_32: case ARM::VST1LNdWB_fixed_Asm_F:
5492 case ARM::VST1LNdWB_fixed_Asm_F32: case ARM::VST1LNdWB_fixed_Asm_I32:
5493 case ARM::VST1LNdWB_fixed_Asm_S32: case ARM::VST1LNdWB_fixed_Asm_U32: {
5495 // Shuffle the operands around so the lane index operand is in the
5498 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5499 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5500 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5501 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5502 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
5503 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5504 TmpInst.addOperand(Inst.getOperand(1)); // lane
5505 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5506 TmpInst.addOperand(Inst.getOperand(5));
5511 case ARM::VST2LNdWB_fixed_Asm_8: case ARM::VST2LNdWB_fixed_Asm_P8:
5512 case ARM::VST2LNdWB_fixed_Asm_I8: case ARM::VST2LNdWB_fixed_Asm_S8:
5513 case ARM::VST2LNdWB_fixed_Asm_U8: case ARM::VST2LNdWB_fixed_Asm_16:
5514 case ARM::VST2LNdWB_fixed_Asm_P16: case ARM::VST2LNdWB_fixed_Asm_I16:
5515 case ARM::VST2LNdWB_fixed_Asm_S16: case ARM::VST2LNdWB_fixed_Asm_U16:
5516 case ARM::VST2LNdWB_fixed_Asm_32: case ARM::VST2LNdWB_fixed_Asm_F:
5517 case ARM::VST2LNdWB_fixed_Asm_F32: case ARM::VST2LNdWB_fixed_Asm_I32:
5518 case ARM::VST2LNdWB_fixed_Asm_S32: case ARM::VST2LNdWB_fixed_Asm_U32:
5519 case ARM::VST2LNqWB_fixed_Asm_16: case ARM::VST2LNqWB_fixed_Asm_P16:
5520 case ARM::VST2LNqWB_fixed_Asm_I16: case ARM::VST2LNqWB_fixed_Asm_S16:
5521 case ARM::VST2LNqWB_fixed_Asm_U16: case ARM::VST2LNqWB_fixed_Asm_32:
5522 case ARM::VST2LNqWB_fixed_Asm_F: case ARM::VST2LNqWB_fixed_Asm_F32:
5523 case ARM::VST2LNqWB_fixed_Asm_I32: case ARM::VST2LNqWB_fixed_Asm_S32:
5524 case ARM::VST2LNqWB_fixed_Asm_U32: {
5526 // Shuffle the operands around so the lane index operand is in the
5529 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5530 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5531 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5532 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5533 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
5534 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5535 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5537 TmpInst.addOperand(Inst.getOperand(1)); // lane
5538 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5539 TmpInst.addOperand(Inst.getOperand(5));
5543 case ARM::VST1LNdAsm_8: case ARM::VST1LNdAsm_P8: case ARM::VST1LNdAsm_I8:
5544 case ARM::VST1LNdAsm_S8: case ARM::VST1LNdAsm_U8: case ARM::VST1LNdAsm_16:
5545 case ARM::VST1LNdAsm_P16: case ARM::VST1LNdAsm_I16: case ARM::VST1LNdAsm_S16:
5546 case ARM::VST1LNdAsm_U16: case ARM::VST1LNdAsm_32: case ARM::VST1LNdAsm_F:
5547 case ARM::VST1LNdAsm_F32: case ARM::VST1LNdAsm_I32: case ARM::VST1LNdAsm_S32:
5548 case ARM::VST1LNdAsm_U32: {
5550 // Shuffle the operands around so the lane index operand is in the
5553 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5554 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5555 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5556 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5557 TmpInst.addOperand(Inst.getOperand(1)); // lane
5558 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5559 TmpInst.addOperand(Inst.getOperand(5));
5564 case ARM::VST2LNdAsm_8: case ARM::VST2LNdAsm_P8: case ARM::VST2LNdAsm_I8:
5565 case ARM::VST2LNdAsm_S8: case ARM::VST2LNdAsm_U8: case ARM::VST2LNdAsm_16:
5566 case ARM::VST2LNdAsm_P16: case ARM::VST2LNdAsm_I16: case ARM::VST2LNdAsm_S16:
5567 case ARM::VST2LNdAsm_U16: case ARM::VST2LNdAsm_32: case ARM::VST2LNdAsm_F:
5568 case ARM::VST2LNdAsm_F32: case ARM::VST2LNdAsm_I32: case ARM::VST2LNdAsm_S32:
5569 case ARM::VST2LNdAsm_U32: case ARM::VST2LNqAsm_16: case ARM::VST2LNqAsm_P16:
5570 case ARM::VST2LNqAsm_I16: case ARM::VST2LNqAsm_S16: case ARM::VST2LNqAsm_U16:
5571 case ARM::VST2LNqAsm_32: case ARM::VST2LNqAsm_F: case ARM::VST2LNqAsm_F32:
5572 case ARM::VST2LNqAsm_I32: case ARM::VST2LNqAsm_S32: case ARM::VST2LNqAsm_U32:{
5574 // Shuffle the operands around so the lane index operand is in the
5577 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5578 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5579 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5580 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5581 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5583 TmpInst.addOperand(Inst.getOperand(1)); // lane
5584 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5585 TmpInst.addOperand(Inst.getOperand(5));
5589 // Handle NEON VLD complex aliases.
5590 case ARM::VLD1LNdWB_register_Asm_8: case ARM::VLD1LNdWB_register_Asm_P8:
5591 case ARM::VLD1LNdWB_register_Asm_I8: case ARM::VLD1LNdWB_register_Asm_S8:
5592 case ARM::VLD1LNdWB_register_Asm_U8: case ARM::VLD1LNdWB_register_Asm_16:
5593 case ARM::VLD1LNdWB_register_Asm_P16: case ARM::VLD1LNdWB_register_Asm_I16:
5594 case ARM::VLD1LNdWB_register_Asm_S16: case ARM::VLD1LNdWB_register_Asm_U16:
5595 case ARM::VLD1LNdWB_register_Asm_32: case ARM::VLD1LNdWB_register_Asm_F:
5596 case ARM::VLD1LNdWB_register_Asm_F32: case ARM::VLD1LNdWB_register_Asm_I32:
5597 case ARM::VLD1LNdWB_register_Asm_S32: case ARM::VLD1LNdWB_register_Asm_U32: {
5599 // Shuffle the operands around so the lane index operand is in the
5602 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5603 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5604 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5605 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5606 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5607 TmpInst.addOperand(Inst.getOperand(4)); // Rm
5608 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5609 TmpInst.addOperand(Inst.getOperand(1)); // lane
5610 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
5611 TmpInst.addOperand(Inst.getOperand(6));
5616 case ARM::VLD2LNdWB_register_Asm_8: case ARM::VLD2LNdWB_register_Asm_P8:
5617 case ARM::VLD2LNdWB_register_Asm_I8: case ARM::VLD2LNdWB_register_Asm_S8:
5618 case ARM::VLD2LNdWB_register_Asm_U8: case ARM::VLD2LNdWB_register_Asm_16:
5619 case ARM::VLD2LNdWB_register_Asm_P16: case ARM::VLD2LNdWB_register_Asm_I16:
5620 case ARM::VLD2LNdWB_register_Asm_S16: case ARM::VLD2LNdWB_register_Asm_U16:
5621 case ARM::VLD2LNdWB_register_Asm_32: case ARM::VLD2LNdWB_register_Asm_F:
5622 case ARM::VLD2LNdWB_register_Asm_F32: case ARM::VLD2LNdWB_register_Asm_I32:
5623 case ARM::VLD2LNdWB_register_Asm_S32: case ARM::VLD2LNdWB_register_Asm_U32:
5624 case ARM::VLD2LNqWB_register_Asm_16: case ARM::VLD2LNqWB_register_Asm_P16:
5625 case ARM::VLD2LNqWB_register_Asm_I16: case ARM::VLD2LNqWB_register_Asm_S16:
5626 case ARM::VLD2LNqWB_register_Asm_U16: case ARM::VLD2LNqWB_register_Asm_32:
5627 case ARM::VLD2LNqWB_register_Asm_F: case ARM::VLD2LNqWB_register_Asm_F32:
5628 case ARM::VLD2LNqWB_register_Asm_I32: case ARM::VLD2LNqWB_register_Asm_S32:
5629 case ARM::VLD2LNqWB_register_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(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5638 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5639 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5640 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5641 TmpInst.addOperand(Inst.getOperand(4)); // Rm
5642 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5643 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5645 TmpInst.addOperand(Inst.getOperand(1)); // lane
5646 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
5647 TmpInst.addOperand(Inst.getOperand(6));
5652 case ARM::VLD1LNdWB_fixed_Asm_8: case ARM::VLD1LNdWB_fixed_Asm_P8:
5653 case ARM::VLD1LNdWB_fixed_Asm_I8: case ARM::VLD1LNdWB_fixed_Asm_S8:
5654 case ARM::VLD1LNdWB_fixed_Asm_U8: case ARM::VLD1LNdWB_fixed_Asm_16:
5655 case ARM::VLD1LNdWB_fixed_Asm_P16: case ARM::VLD1LNdWB_fixed_Asm_I16:
5656 case ARM::VLD1LNdWB_fixed_Asm_S16: case ARM::VLD1LNdWB_fixed_Asm_U16:
5657 case ARM::VLD1LNdWB_fixed_Asm_32: case ARM::VLD1LNdWB_fixed_Asm_F:
5658 case ARM::VLD1LNdWB_fixed_Asm_F32: case ARM::VLD1LNdWB_fixed_Asm_I32:
5659 case ARM::VLD1LNdWB_fixed_Asm_S32: case ARM::VLD1LNdWB_fixed_Asm_U32: {
5661 // Shuffle the operands around so the lane index operand is in the
5664 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5665 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5666 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5667 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5668 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5669 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
5670 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5671 TmpInst.addOperand(Inst.getOperand(1)); // lane
5672 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5673 TmpInst.addOperand(Inst.getOperand(5));
5678 case ARM::VLD2LNdWB_fixed_Asm_8: case ARM::VLD2LNdWB_fixed_Asm_P8:
5679 case ARM::VLD2LNdWB_fixed_Asm_I8: case ARM::VLD2LNdWB_fixed_Asm_S8:
5680 case ARM::VLD2LNdWB_fixed_Asm_U8: case ARM::VLD2LNdWB_fixed_Asm_16:
5681 case ARM::VLD2LNdWB_fixed_Asm_P16: case ARM::VLD2LNdWB_fixed_Asm_I16:
5682 case ARM::VLD2LNdWB_fixed_Asm_S16: case ARM::VLD2LNdWB_fixed_Asm_U16:
5683 case ARM::VLD2LNdWB_fixed_Asm_32: case ARM::VLD2LNdWB_fixed_Asm_F:
5684 case ARM::VLD2LNdWB_fixed_Asm_F32: case ARM::VLD2LNdWB_fixed_Asm_I32:
5685 case ARM::VLD2LNdWB_fixed_Asm_S32: case ARM::VLD2LNdWB_fixed_Asm_U32:
5686 case ARM::VLD2LNqWB_fixed_Asm_16: case ARM::VLD2LNqWB_fixed_Asm_P16:
5687 case ARM::VLD2LNqWB_fixed_Asm_I16: case ARM::VLD2LNqWB_fixed_Asm_S16:
5688 case ARM::VLD2LNqWB_fixed_Asm_U16: case ARM::VLD2LNqWB_fixed_Asm_32:
5689 case ARM::VLD2LNqWB_fixed_Asm_F: case ARM::VLD2LNqWB_fixed_Asm_F32:
5690 case ARM::VLD2LNqWB_fixed_Asm_I32: case ARM::VLD2LNqWB_fixed_Asm_S32:
5691 case ARM::VLD2LNqWB_fixed_Asm_U32: {
5693 // Shuffle the operands around so the lane index operand is in the
5696 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5697 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5698 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5700 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5701 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5702 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5703 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
5704 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5705 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5707 TmpInst.addOperand(Inst.getOperand(1)); // lane
5708 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5709 TmpInst.addOperand(Inst.getOperand(5));
5714 case ARM::VLD1LNdAsm_8: case ARM::VLD1LNdAsm_P8: case ARM::VLD1LNdAsm_I8:
5715 case ARM::VLD1LNdAsm_S8: case ARM::VLD1LNdAsm_U8: case ARM::VLD1LNdAsm_16:
5716 case ARM::VLD1LNdAsm_P16: case ARM::VLD1LNdAsm_I16: case ARM::VLD1LNdAsm_S16:
5717 case ARM::VLD1LNdAsm_U16: case ARM::VLD1LNdAsm_32: case ARM::VLD1LNdAsm_F:
5718 case ARM::VLD1LNdAsm_F32: case ARM::VLD1LNdAsm_I32: case ARM::VLD1LNdAsm_S32:
5719 case ARM::VLD1LNdAsm_U32: {
5721 // Shuffle the operands around so the lane index operand is in the
5724 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5725 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5726 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5727 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5728 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5729 TmpInst.addOperand(Inst.getOperand(1)); // lane
5730 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5731 TmpInst.addOperand(Inst.getOperand(5));
5736 case ARM::VLD2LNdAsm_8: case ARM::VLD2LNdAsm_P8: case ARM::VLD2LNdAsm_I8:
5737 case ARM::VLD2LNdAsm_S8: case ARM::VLD2LNdAsm_U8: case ARM::VLD2LNdAsm_16:
5738 case ARM::VLD2LNdAsm_P16: case ARM::VLD2LNdAsm_I16: case ARM::VLD2LNdAsm_S16:
5739 case ARM::VLD2LNdAsm_U16: case ARM::VLD2LNdAsm_32: case ARM::VLD2LNdAsm_F:
5740 case ARM::VLD2LNdAsm_F32: case ARM::VLD2LNdAsm_I32: case ARM::VLD2LNdAsm_S32:
5741 case ARM::VLD2LNdAsm_U32: case ARM::VLD2LNqAsm_16: case ARM::VLD2LNqAsm_P16:
5742 case ARM::VLD2LNqAsm_I16: case ARM::VLD2LNqAsm_S16: case ARM::VLD2LNqAsm_U16:
5743 case ARM::VLD2LNqAsm_32: case ARM::VLD2LNqAsm_F: case ARM::VLD2LNqAsm_F32:
5744 case ARM::VLD2LNqAsm_I32: case ARM::VLD2LNqAsm_S32:
5745 case ARM::VLD2LNqAsm_U32: {
5747 // Shuffle the operands around so the lane index operand is in the
5750 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5751 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5752 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5754 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5755 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5756 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5757 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5759 TmpInst.addOperand(Inst.getOperand(1)); // lane
5760 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5761 TmpInst.addOperand(Inst.getOperand(5));
5765 // Handle the Thumb2 mode MOV complex aliases.
5767 case ARM::t2MOVSsr: {
5768 // Which instruction to expand to depends on the CCOut operand and
5769 // whether we're in an IT block if the register operands are low
5771 bool isNarrow = false;
5772 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
5773 isARMLowRegister(Inst.getOperand(1).getReg()) &&
5774 isARMLowRegister(Inst.getOperand(2).getReg()) &&
5775 Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() &&
5776 inITBlock() == (Inst.getOpcode() == ARM::t2MOVsr))
5780 switch(ARM_AM::getSORegShOp(Inst.getOperand(3).getImm())) {
5781 default: llvm_unreachable("unexpected opcode!");
5782 case ARM_AM::asr: newOpc = isNarrow ? ARM::tASRrr : ARM::t2ASRrr; break;
5783 case ARM_AM::lsr: newOpc = isNarrow ? ARM::tLSRrr : ARM::t2LSRrr; break;
5784 case ARM_AM::lsl: newOpc = isNarrow ? ARM::tLSLrr : ARM::t2LSLrr; break;
5785 case ARM_AM::ror: newOpc = isNarrow ? ARM::tROR : ARM::t2RORrr; break;
5787 TmpInst.setOpcode(newOpc);
5788 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5790 TmpInst.addOperand(MCOperand::CreateReg(
5791 Inst.getOpcode() == ARM::t2MOVSsr ? ARM::CPSR : 0));
5792 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5793 TmpInst.addOperand(Inst.getOperand(2)); // Rm
5794 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5795 TmpInst.addOperand(Inst.getOperand(5));
5797 TmpInst.addOperand(MCOperand::CreateReg(
5798 Inst.getOpcode() == ARM::t2MOVSsr ? ARM::CPSR : 0));
5803 case ARM::t2MOVSsi: {
5804 // Which instruction to expand to depends on the CCOut operand and
5805 // whether we're in an IT block if the register operands are low
5807 bool isNarrow = false;
5808 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
5809 isARMLowRegister(Inst.getOperand(1).getReg()) &&
5810 inITBlock() == (Inst.getOpcode() == ARM::t2MOVsi))
5814 switch(ARM_AM::getSORegShOp(Inst.getOperand(2).getImm())) {
5815 default: llvm_unreachable("unexpected opcode!");
5816 case ARM_AM::asr: newOpc = isNarrow ? ARM::tASRri : ARM::t2ASRri; break;
5817 case ARM_AM::lsr: newOpc = isNarrow ? ARM::tLSRri : ARM::t2LSRri; break;
5818 case ARM_AM::lsl: newOpc = isNarrow ? ARM::tLSLri : ARM::t2LSLri; break;
5819 case ARM_AM::ror: newOpc = ARM::t2RORri; isNarrow = false; break;
5820 case ARM_AM::rrx: isNarrow = false; newOpc = ARM::t2RRX; break;
5822 unsigned Ammount = ARM_AM::getSORegOffset(Inst.getOperand(2).getImm());
5823 if (Ammount == 32) Ammount = 0;
5824 TmpInst.setOpcode(newOpc);
5825 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5827 TmpInst.addOperand(MCOperand::CreateReg(
5828 Inst.getOpcode() == ARM::t2MOVSsi ? ARM::CPSR : 0));
5829 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5830 if (newOpc != ARM::t2RRX)
5831 TmpInst.addOperand(MCOperand::CreateImm(Ammount));
5832 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
5833 TmpInst.addOperand(Inst.getOperand(4));
5835 TmpInst.addOperand(MCOperand::CreateReg(
5836 Inst.getOpcode() == ARM::t2MOVSsi ? ARM::CPSR : 0));
5840 // Handle the ARM mode MOV complex aliases.
5845 ARM_AM::ShiftOpc ShiftTy;
5846 switch(Inst.getOpcode()) {
5847 default: llvm_unreachable("unexpected opcode!");
5848 case ARM::ASRr: ShiftTy = ARM_AM::asr; break;
5849 case ARM::LSRr: ShiftTy = ARM_AM::lsr; break;
5850 case ARM::LSLr: ShiftTy = ARM_AM::lsl; break;
5851 case ARM::RORr: ShiftTy = ARM_AM::ror; break;
5853 unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, 0);
5855 TmpInst.setOpcode(ARM::MOVsr);
5856 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5857 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5858 TmpInst.addOperand(Inst.getOperand(2)); // Rm
5859 TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
5860 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
5861 TmpInst.addOperand(Inst.getOperand(4));
5862 TmpInst.addOperand(Inst.getOperand(5)); // cc_out
5870 ARM_AM::ShiftOpc ShiftTy;
5871 switch(Inst.getOpcode()) {
5872 default: llvm_unreachable("unexpected opcode!");
5873 case ARM::ASRi: ShiftTy = ARM_AM::asr; break;
5874 case ARM::LSRi: ShiftTy = ARM_AM::lsr; break;
5875 case ARM::LSLi: ShiftTy = ARM_AM::lsl; break;
5876 case ARM::RORi: ShiftTy = ARM_AM::ror; break;
5878 // A shift by zero is a plain MOVr, not a MOVsi.
5879 unsigned Amt = Inst.getOperand(2).getImm();
5880 unsigned Opc = Amt == 0 ? ARM::MOVr : ARM::MOVsi;
5881 unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, Amt);
5883 TmpInst.setOpcode(Opc);
5884 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5885 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5886 if (Opc == ARM::MOVsi)
5887 TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
5888 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
5889 TmpInst.addOperand(Inst.getOperand(4));
5890 TmpInst.addOperand(Inst.getOperand(5)); // cc_out
5895 unsigned Shifter = ARM_AM::getSORegOpc(ARM_AM::rrx, 0);
5897 TmpInst.setOpcode(ARM::MOVsi);
5898 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5899 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5900 TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
5901 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5902 TmpInst.addOperand(Inst.getOperand(3));
5903 TmpInst.addOperand(Inst.getOperand(4)); // cc_out
5907 case ARM::t2LDMIA_UPD: {
5908 // If this is a load of a single register, then we should use
5909 // a post-indexed LDR instruction instead, per the ARM ARM.
5910 if (Inst.getNumOperands() != 5)
5913 TmpInst.setOpcode(ARM::t2LDR_POST);
5914 TmpInst.addOperand(Inst.getOperand(4)); // Rt
5915 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
5916 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5917 TmpInst.addOperand(MCOperand::CreateImm(4));
5918 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5919 TmpInst.addOperand(Inst.getOperand(3));
5923 case ARM::t2STMDB_UPD: {
5924 // If this is a store of a single register, then we should use
5925 // a pre-indexed STR instruction instead, per the ARM ARM.
5926 if (Inst.getNumOperands() != 5)
5929 TmpInst.setOpcode(ARM::t2STR_PRE);
5930 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
5931 TmpInst.addOperand(Inst.getOperand(4)); // Rt
5932 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5933 TmpInst.addOperand(MCOperand::CreateImm(-4));
5934 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5935 TmpInst.addOperand(Inst.getOperand(3));
5939 case ARM::LDMIA_UPD:
5940 // If this is a load of a single register via a 'pop', then we should use
5941 // a post-indexed LDR instruction instead, per the ARM ARM.
5942 if (static_cast<ARMOperand*>(Operands[0])->getToken() == "pop" &&
5943 Inst.getNumOperands() == 5) {
5945 TmpInst.setOpcode(ARM::LDR_POST_IMM);
5946 TmpInst.addOperand(Inst.getOperand(4)); // Rt
5947 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
5948 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5949 TmpInst.addOperand(MCOperand::CreateReg(0)); // am2offset
5950 TmpInst.addOperand(MCOperand::CreateImm(4));
5951 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5952 TmpInst.addOperand(Inst.getOperand(3));
5957 case ARM::STMDB_UPD:
5958 // If this is a store of a single register via a 'push', then we should use
5959 // a pre-indexed STR instruction instead, per the ARM ARM.
5960 if (static_cast<ARMOperand*>(Operands[0])->getToken() == "push" &&
5961 Inst.getNumOperands() == 5) {
5963 TmpInst.setOpcode(ARM::STR_PRE_IMM);
5964 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
5965 TmpInst.addOperand(Inst.getOperand(4)); // Rt
5966 TmpInst.addOperand(Inst.getOperand(1)); // addrmode_imm12
5967 TmpInst.addOperand(MCOperand::CreateImm(-4));
5968 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5969 TmpInst.addOperand(Inst.getOperand(3));
5973 case ARM::t2ADDri12:
5974 // If the immediate fits for encoding T3 (t2ADDri) and the generic "add"
5975 // mnemonic was used (not "addw"), encoding T3 is preferred.
5976 if (static_cast<ARMOperand*>(Operands[0])->getToken() != "add" ||
5977 ARM_AM::getT2SOImmVal(Inst.getOperand(2).getImm()) == -1)
5979 Inst.setOpcode(ARM::t2ADDri);
5980 Inst.addOperand(MCOperand::CreateReg(0)); // cc_out
5982 case ARM::t2SUBri12:
5983 // If the immediate fits for encoding T3 (t2SUBri) and the generic "sub"
5984 // mnemonic was used (not "subw"), encoding T3 is preferred.
5985 if (static_cast<ARMOperand*>(Operands[0])->getToken() != "sub" ||
5986 ARM_AM::getT2SOImmVal(Inst.getOperand(2).getImm()) == -1)
5988 Inst.setOpcode(ARM::t2SUBri);
5989 Inst.addOperand(MCOperand::CreateReg(0)); // cc_out
5992 // If the immediate is in the range 0-7, we want tADDi3 iff Rd was
5993 // explicitly specified. From the ARM ARM: "Encoding T1 is preferred
5994 // to encoding T2 if <Rd> is specified and encoding T2 is preferred
5995 // to encoding T1 if <Rd> is omitted."
5996 if (Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
5997 Inst.setOpcode(ARM::tADDi3);
6002 // If the immediate is in the range 0-7, we want tADDi3 iff Rd was
6003 // explicitly specified. From the ARM ARM: "Encoding T1 is preferred
6004 // to encoding T2 if <Rd> is specified and encoding T2 is preferred
6005 // to encoding T1 if <Rd> is omitted."
6006 if (Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
6007 Inst.setOpcode(ARM::tSUBi3);
6011 case ARM::t2ADDrr: {
6012 // If the destination and first source operand are the same, and
6013 // there's no setting of the flags, use encoding T2 instead of T3.
6014 // Note that this is only for ADD, not SUB. This mirrors the system
6015 // 'as' behaviour. Make sure the wide encoding wasn't explicit.
6016 if (Inst.getOperand(0).getReg() != Inst.getOperand(1).getReg() ||
6017 Inst.getOperand(5).getReg() != 0 ||
6018 (static_cast<ARMOperand*>(Operands[3])->isToken() &&
6019 static_cast<ARMOperand*>(Operands[3])->getToken() == ".w"))
6022 TmpInst.setOpcode(ARM::tADDhirr);
6023 TmpInst.addOperand(Inst.getOperand(0));
6024 TmpInst.addOperand(Inst.getOperand(0));
6025 TmpInst.addOperand(Inst.getOperand(2));
6026 TmpInst.addOperand(Inst.getOperand(3));
6027 TmpInst.addOperand(Inst.getOperand(4));
6032 // A Thumb conditional branch outside of an IT block is a tBcc.
6033 if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock()) {
6034 Inst.setOpcode(ARM::tBcc);
6039 // A Thumb2 conditional branch outside of an IT block is a t2Bcc.
6040 if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock()){
6041 Inst.setOpcode(ARM::t2Bcc);
6046 // If the conditional is AL or we're in an IT block, we really want t2B.
6047 if (Inst.getOperand(1).getImm() == ARMCC::AL || inITBlock()) {
6048 Inst.setOpcode(ARM::t2B);
6053 // If the conditional is AL, we really want tB.
6054 if (Inst.getOperand(1).getImm() == ARMCC::AL) {
6055 Inst.setOpcode(ARM::tB);
6060 // If the register list contains any high registers, or if the writeback
6061 // doesn't match what tLDMIA can do, we need to use the 32-bit encoding
6062 // instead if we're in Thumb2. Otherwise, this should have generated
6063 // an error in validateInstruction().
6064 unsigned Rn = Inst.getOperand(0).getReg();
6065 bool hasWritebackToken =
6066 (static_cast<ARMOperand*>(Operands[3])->isToken() &&
6067 static_cast<ARMOperand*>(Operands[3])->getToken() == "!");
6068 bool listContainsBase;
6069 if (checkLowRegisterList(Inst, 3, Rn, 0, listContainsBase) ||
6070 (!listContainsBase && !hasWritebackToken) ||
6071 (listContainsBase && hasWritebackToken)) {
6072 // 16-bit encoding isn't sufficient. Switch to the 32-bit version.
6073 assert (isThumbTwo());
6074 Inst.setOpcode(hasWritebackToken ? ARM::t2LDMIA_UPD : ARM::t2LDMIA);
6075 // If we're switching to the updating version, we need to insert
6076 // the writeback tied operand.
6077 if (hasWritebackToken)
6078 Inst.insert(Inst.begin(),
6079 MCOperand::CreateReg(Inst.getOperand(0).getReg()));
6084 case ARM::tSTMIA_UPD: {
6085 // If the register list contains any high registers, we need to use
6086 // the 32-bit encoding instead if we're in Thumb2. Otherwise, this
6087 // should have generated an error in validateInstruction().
6088 unsigned Rn = Inst.getOperand(0).getReg();
6089 bool listContainsBase;
6090 if (checkLowRegisterList(Inst, 4, Rn, 0, listContainsBase)) {
6091 // 16-bit encoding isn't sufficient. Switch to the 32-bit version.
6092 assert (isThumbTwo());
6093 Inst.setOpcode(ARM::t2STMIA_UPD);
6099 bool listContainsBase;
6100 // If the register list contains any high registers, we need to use
6101 // the 32-bit encoding instead if we're in Thumb2. Otherwise, this
6102 // should have generated an error in validateInstruction().
6103 if (!checkLowRegisterList(Inst, 2, 0, ARM::PC, listContainsBase))
6105 assert (isThumbTwo());
6106 Inst.setOpcode(ARM::t2LDMIA_UPD);
6107 // Add the base register and writeback operands.
6108 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
6109 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
6113 bool listContainsBase;
6114 if (!checkLowRegisterList(Inst, 2, 0, ARM::LR, listContainsBase))
6116 assert (isThumbTwo());
6117 Inst.setOpcode(ARM::t2STMDB_UPD);
6118 // Add the base register and writeback operands.
6119 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
6120 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
6124 // If we can use the 16-bit encoding and the user didn't explicitly
6125 // request the 32-bit variant, transform it here.
6126 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
6127 Inst.getOperand(1).getImm() <= 255 &&
6128 ((!inITBlock() && Inst.getOperand(2).getImm() == ARMCC::AL &&
6129 Inst.getOperand(4).getReg() == ARM::CPSR) ||
6130 (inITBlock() && Inst.getOperand(4).getReg() == 0)) &&
6131 (!static_cast<ARMOperand*>(Operands[2])->isToken() ||
6132 static_cast<ARMOperand*>(Operands[2])->getToken() != ".w")) {
6133 // The operands aren't in the same order for tMOVi8...
6135 TmpInst.setOpcode(ARM::tMOVi8);
6136 TmpInst.addOperand(Inst.getOperand(0));
6137 TmpInst.addOperand(Inst.getOperand(4));
6138 TmpInst.addOperand(Inst.getOperand(1));
6139 TmpInst.addOperand(Inst.getOperand(2));
6140 TmpInst.addOperand(Inst.getOperand(3));
6147 // If we can use the 16-bit encoding and the user didn't explicitly
6148 // request the 32-bit variant, transform it here.
6149 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
6150 isARMLowRegister(Inst.getOperand(1).getReg()) &&
6151 Inst.getOperand(2).getImm() == ARMCC::AL &&
6152 Inst.getOperand(4).getReg() == ARM::CPSR &&
6153 (!static_cast<ARMOperand*>(Operands[2])->isToken() ||
6154 static_cast<ARMOperand*>(Operands[2])->getToken() != ".w")) {
6155 // The operands aren't the same for tMOV[S]r... (no cc_out)
6157 TmpInst.setOpcode(Inst.getOperand(4).getReg() ? ARM::tMOVSr : ARM::tMOVr);
6158 TmpInst.addOperand(Inst.getOperand(0));
6159 TmpInst.addOperand(Inst.getOperand(1));
6160 TmpInst.addOperand(Inst.getOperand(2));
6161 TmpInst.addOperand(Inst.getOperand(3));
6171 // If we can use the 16-bit encoding and the user didn't explicitly
6172 // request the 32-bit variant, transform it here.
6173 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
6174 isARMLowRegister(Inst.getOperand(1).getReg()) &&
6175 Inst.getOperand(2).getImm() == 0 &&
6176 (!static_cast<ARMOperand*>(Operands[2])->isToken() ||
6177 static_cast<ARMOperand*>(Operands[2])->getToken() != ".w")) {
6179 switch (Inst.getOpcode()) {
6180 default: llvm_unreachable("Illegal opcode!");
6181 case ARM::t2SXTH: NewOpc = ARM::tSXTH; break;
6182 case ARM::t2SXTB: NewOpc = ARM::tSXTB; break;
6183 case ARM::t2UXTH: NewOpc = ARM::tUXTH; break;
6184 case ARM::t2UXTB: NewOpc = ARM::tUXTB; break;
6186 // The operands aren't the same for thumb1 (no rotate operand).
6188 TmpInst.setOpcode(NewOpc);
6189 TmpInst.addOperand(Inst.getOperand(0));
6190 TmpInst.addOperand(Inst.getOperand(1));
6191 TmpInst.addOperand(Inst.getOperand(3));
6192 TmpInst.addOperand(Inst.getOperand(4));
6199 ARM_AM::ShiftOpc SOpc = ARM_AM::getSORegShOp(Inst.getOperand(2).getImm());
6200 if (SOpc == ARM_AM::rrx) return false;
6201 if (ARM_AM::getSORegOffset(Inst.getOperand(2).getImm()) == 0) {
6202 // Shifting by zero is accepted as a vanilla 'MOVr'
6204 TmpInst.setOpcode(ARM::MOVr);
6205 TmpInst.addOperand(Inst.getOperand(0));
6206 TmpInst.addOperand(Inst.getOperand(1));
6207 TmpInst.addOperand(Inst.getOperand(3));
6208 TmpInst.addOperand(Inst.getOperand(4));
6209 TmpInst.addOperand(Inst.getOperand(5));
6222 ARM_AM::ShiftOpc SOpc = ARM_AM::getSORegShOp(Inst.getOperand(3).getImm());
6223 if (SOpc == ARM_AM::rrx) return false;
6224 switch (Inst.getOpcode()) {
6225 default: assert(0 && "unexpected opcode!");
6226 case ARM::ANDrsi: newOpc = ARM::ANDrr; break;
6227 case ARM::ORRrsi: newOpc = ARM::ORRrr; break;
6228 case ARM::EORrsi: newOpc = ARM::EORrr; break;
6229 case ARM::BICrsi: newOpc = ARM::BICrr; break;
6230 case ARM::SUBrsi: newOpc = ARM::SUBrr; break;
6231 case ARM::ADDrsi: newOpc = ARM::ADDrr; break;
6233 // If the shift is by zero, use the non-shifted instruction definition.
6234 if (ARM_AM::getSORegOffset(Inst.getOperand(3).getImm()) == 0) {
6236 TmpInst.setOpcode(newOpc);
6237 TmpInst.addOperand(Inst.getOperand(0));
6238 TmpInst.addOperand(Inst.getOperand(1));
6239 TmpInst.addOperand(Inst.getOperand(2));
6240 TmpInst.addOperand(Inst.getOperand(4));
6241 TmpInst.addOperand(Inst.getOperand(5));
6242 TmpInst.addOperand(Inst.getOperand(6));
6249 // The mask bits for all but the first condition are represented as
6250 // the low bit of the condition code value implies 't'. We currently
6251 // always have 1 implies 't', so XOR toggle the bits if the low bit
6252 // of the condition code is zero. The encoding also expects the low
6253 // bit of the condition to be encoded as bit 4 of the mask operand,
6254 // so mask that in if needed
6255 MCOperand &MO = Inst.getOperand(1);
6256 unsigned Mask = MO.getImm();
6257 unsigned OrigMask = Mask;
6258 unsigned TZ = CountTrailingZeros_32(Mask);
6259 if ((Inst.getOperand(0).getImm() & 1) == 0) {
6260 assert(Mask && TZ <= 3 && "illegal IT mask value!");
6261 for (unsigned i = 3; i != TZ; --i)
6267 // Set up the IT block state according to the IT instruction we just
6269 assert(!inITBlock() && "nested IT blocks?!");
6270 ITState.Cond = ARMCC::CondCodes(Inst.getOperand(0).getImm());
6271 ITState.Mask = OrigMask; // Use the original mask, not the updated one.
6272 ITState.CurPosition = 0;
6273 ITState.FirstCond = true;
6280 unsigned ARMAsmParser::checkTargetMatchPredicate(MCInst &Inst) {
6281 // 16-bit thumb arithmetic instructions either require or preclude the 'S'
6282 // suffix depending on whether they're in an IT block or not.
6283 unsigned Opc = Inst.getOpcode();
6284 const MCInstrDesc &MCID = getInstDesc(Opc);
6285 if (MCID.TSFlags & ARMII::ThumbArithFlagSetting) {
6286 assert(MCID.hasOptionalDef() &&
6287 "optionally flag setting instruction missing optional def operand");
6288 assert(MCID.NumOperands == Inst.getNumOperands() &&
6289 "operand count mismatch!");
6290 // Find the optional-def operand (cc_out).
6293 !MCID.OpInfo[OpNo].isOptionalDef() && OpNo < MCID.NumOperands;
6296 // If we're parsing Thumb1, reject it completely.
6297 if (isThumbOne() && Inst.getOperand(OpNo).getReg() != ARM::CPSR)
6298 return Match_MnemonicFail;
6299 // If we're parsing Thumb2, which form is legal depends on whether we're
6301 if (isThumbTwo() && Inst.getOperand(OpNo).getReg() != ARM::CPSR &&
6303 return Match_RequiresITBlock;
6304 if (isThumbTwo() && Inst.getOperand(OpNo).getReg() == ARM::CPSR &&
6306 return Match_RequiresNotITBlock;
6308 // Some high-register supporting Thumb1 encodings only allow both registers
6309 // to be from r0-r7 when in Thumb2.
6310 else if (Opc == ARM::tADDhirr && isThumbOne() &&
6311 isARMLowRegister(Inst.getOperand(1).getReg()) &&
6312 isARMLowRegister(Inst.getOperand(2).getReg()))
6313 return Match_RequiresThumb2;
6314 // Others only require ARMv6 or later.
6315 else if (Opc == ARM::tMOVr && isThumbOne() && !hasV6Ops() &&
6316 isARMLowRegister(Inst.getOperand(0).getReg()) &&
6317 isARMLowRegister(Inst.getOperand(1).getReg()))
6318 return Match_RequiresV6;
6319 return Match_Success;
6323 MatchAndEmitInstruction(SMLoc IDLoc,
6324 SmallVectorImpl<MCParsedAsmOperand*> &Operands,
6328 unsigned MatchResult;
6329 MatchResult = MatchInstructionImpl(Operands, Inst, ErrorInfo);
6330 switch (MatchResult) {
6333 // Context sensitive operand constraints aren't handled by the matcher,
6334 // so check them here.
6335 if (validateInstruction(Inst, Operands)) {
6336 // Still progress the IT block, otherwise one wrong condition causes
6337 // nasty cascading errors.
6338 forwardITPosition();
6342 // Some instructions need post-processing to, for example, tweak which
6343 // encoding is selected. Loop on it while changes happen so the
6344 // individual transformations can chain off each other. E.g.,
6345 // tPOP(r8)->t2LDMIA_UPD(sp,r8)->t2STR_POST(sp,r8)
6346 while (processInstruction(Inst, Operands))
6349 // Only move forward at the very end so that everything in validate
6350 // and process gets a consistent answer about whether we're in an IT
6352 forwardITPosition();
6354 Out.EmitInstruction(Inst);
6356 case Match_MissingFeature:
6357 Error(IDLoc, "instruction requires a CPU feature not currently enabled");
6359 case Match_InvalidOperand: {
6360 SMLoc ErrorLoc = IDLoc;
6361 if (ErrorInfo != ~0U) {
6362 if (ErrorInfo >= Operands.size())
6363 return Error(IDLoc, "too few operands for instruction");
6365 ErrorLoc = ((ARMOperand*)Operands[ErrorInfo])->getStartLoc();
6366 if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
6369 return Error(ErrorLoc, "invalid operand for instruction");
6371 case Match_MnemonicFail:
6372 return Error(IDLoc, "invalid instruction");
6373 case Match_ConversionFail:
6374 // The converter function will have already emited a diagnostic.
6376 case Match_RequiresNotITBlock:
6377 return Error(IDLoc, "flag setting instruction only valid outside IT block");
6378 case Match_RequiresITBlock:
6379 return Error(IDLoc, "instruction only valid inside IT block");
6380 case Match_RequiresV6:
6381 return Error(IDLoc, "instruction variant requires ARMv6 or later");
6382 case Match_RequiresThumb2:
6383 return Error(IDLoc, "instruction variant requires Thumb2");
6386 llvm_unreachable("Implement any new match types added!");
6390 /// parseDirective parses the arm specific directives
6391 bool ARMAsmParser::ParseDirective(AsmToken DirectiveID) {
6392 StringRef IDVal = DirectiveID.getIdentifier();
6393 if (IDVal == ".word")
6394 return parseDirectiveWord(4, DirectiveID.getLoc());
6395 else if (IDVal == ".thumb")
6396 return parseDirectiveThumb(DirectiveID.getLoc());
6397 else if (IDVal == ".arm")
6398 return parseDirectiveARM(DirectiveID.getLoc());
6399 else if (IDVal == ".thumb_func")
6400 return parseDirectiveThumbFunc(DirectiveID.getLoc());
6401 else if (IDVal == ".code")
6402 return parseDirectiveCode(DirectiveID.getLoc());
6403 else if (IDVal == ".syntax")
6404 return parseDirectiveSyntax(DirectiveID.getLoc());
6405 else if (IDVal == ".unreq")
6406 return parseDirectiveUnreq(DirectiveID.getLoc());
6407 else if (IDVal == ".arch")
6408 return parseDirectiveArch(DirectiveID.getLoc());
6409 else if (IDVal == ".eabi_attribute")
6410 return parseDirectiveEabiAttr(DirectiveID.getLoc());
6414 /// parseDirectiveWord
6415 /// ::= .word [ expression (, expression)* ]
6416 bool ARMAsmParser::parseDirectiveWord(unsigned Size, SMLoc L) {
6417 if (getLexer().isNot(AsmToken::EndOfStatement)) {
6419 const MCExpr *Value;
6420 if (getParser().ParseExpression(Value))
6423 getParser().getStreamer().EmitValue(Value, Size, 0/*addrspace*/);
6425 if (getLexer().is(AsmToken::EndOfStatement))
6428 // FIXME: Improve diagnostic.
6429 if (getLexer().isNot(AsmToken::Comma))
6430 return Error(L, "unexpected token in directive");
6439 /// parseDirectiveThumb
6441 bool ARMAsmParser::parseDirectiveThumb(SMLoc L) {
6442 if (getLexer().isNot(AsmToken::EndOfStatement))
6443 return Error(L, "unexpected token in directive");
6448 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
6452 /// parseDirectiveARM
6454 bool ARMAsmParser::parseDirectiveARM(SMLoc L) {
6455 if (getLexer().isNot(AsmToken::EndOfStatement))
6456 return Error(L, "unexpected token in directive");
6461 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
6465 /// parseDirectiveThumbFunc
6466 /// ::= .thumbfunc symbol_name
6467 bool ARMAsmParser::parseDirectiveThumbFunc(SMLoc L) {
6468 const MCAsmInfo &MAI = getParser().getStreamer().getContext().getAsmInfo();
6469 bool isMachO = MAI.hasSubsectionsViaSymbols();
6471 bool needFuncName = true;
6473 // Darwin asm has (optionally) function name after .thumb_func direction
6476 const AsmToken &Tok = Parser.getTok();
6477 if (Tok.isNot(AsmToken::EndOfStatement)) {
6478 if (Tok.isNot(AsmToken::Identifier) && Tok.isNot(AsmToken::String))
6479 return Error(L, "unexpected token in .thumb_func directive");
6480 Name = Tok.getIdentifier();
6481 Parser.Lex(); // Consume the identifier token.
6482 needFuncName = false;
6486 if (getLexer().isNot(AsmToken::EndOfStatement))
6487 return Error(L, "unexpected token in directive");
6489 // Eat the end of statement and any blank lines that follow.
6490 while (getLexer().is(AsmToken::EndOfStatement))
6493 // FIXME: assuming function name will be the line following .thumb_func
6494 // We really should be checking the next symbol definition even if there's
6495 // stuff in between.
6497 Name = Parser.getTok().getIdentifier();
6500 // Mark symbol as a thumb symbol.
6501 MCSymbol *Func = getParser().getContext().GetOrCreateSymbol(Name);
6502 getParser().getStreamer().EmitThumbFunc(Func);
6506 /// parseDirectiveSyntax
6507 /// ::= .syntax unified | divided
6508 bool ARMAsmParser::parseDirectiveSyntax(SMLoc L) {
6509 const AsmToken &Tok = Parser.getTok();
6510 if (Tok.isNot(AsmToken::Identifier))
6511 return Error(L, "unexpected token in .syntax directive");
6512 StringRef Mode = Tok.getString();
6513 if (Mode == "unified" || Mode == "UNIFIED")
6515 else if (Mode == "divided" || Mode == "DIVIDED")
6516 return Error(L, "'.syntax divided' arm asssembly not supported");
6518 return Error(L, "unrecognized syntax mode in .syntax directive");
6520 if (getLexer().isNot(AsmToken::EndOfStatement))
6521 return Error(Parser.getTok().getLoc(), "unexpected token in directive");
6524 // TODO tell the MC streamer the mode
6525 // getParser().getStreamer().Emit???();
6529 /// parseDirectiveCode
6530 /// ::= .code 16 | 32
6531 bool ARMAsmParser::parseDirectiveCode(SMLoc L) {
6532 const AsmToken &Tok = Parser.getTok();
6533 if (Tok.isNot(AsmToken::Integer))
6534 return Error(L, "unexpected token in .code directive");
6535 int64_t Val = Parser.getTok().getIntVal();
6541 return Error(L, "invalid operand to .code directive");
6543 if (getLexer().isNot(AsmToken::EndOfStatement))
6544 return Error(Parser.getTok().getLoc(), "unexpected token in directive");
6550 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
6554 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
6560 /// parseDirectiveReq
6561 /// ::= name .req registername
6562 bool ARMAsmParser::parseDirectiveReq(StringRef Name, SMLoc L) {
6563 Parser.Lex(); // Eat the '.req' token.
6565 SMLoc SRegLoc, ERegLoc;
6566 if (ParseRegister(Reg, SRegLoc, ERegLoc)) {
6567 Parser.EatToEndOfStatement();
6568 return Error(SRegLoc, "register name expected");
6571 // Shouldn't be anything else.
6572 if (Parser.getTok().isNot(AsmToken::EndOfStatement)) {
6573 Parser.EatToEndOfStatement();
6574 return Error(Parser.getTok().getLoc(),
6575 "unexpected input in .req directive.");
6578 Parser.Lex(); // Consume the EndOfStatement
6580 if (RegisterReqs.GetOrCreateValue(Name, Reg).getValue() != Reg)
6581 return Error(SRegLoc, "redefinition of '" + Name +
6582 "' does not match original.");
6587 /// parseDirectiveUneq
6588 /// ::= .unreq registername
6589 bool ARMAsmParser::parseDirectiveUnreq(SMLoc L) {
6590 if (Parser.getTok().isNot(AsmToken::Identifier)) {
6591 Parser.EatToEndOfStatement();
6592 return Error(L, "unexpected input in .unreq directive.");
6594 RegisterReqs.erase(Parser.getTok().getIdentifier());
6595 Parser.Lex(); // Eat the identifier.
6599 /// parseDirectiveArch
6601 bool ARMAsmParser::parseDirectiveArch(SMLoc L) {
6605 /// parseDirectiveEabiAttr
6606 /// ::= .eabi_attribute int, int
6607 bool ARMAsmParser::parseDirectiveEabiAttr(SMLoc L) {
6611 extern "C" void LLVMInitializeARMAsmLexer();
6613 /// Force static initialization.
6614 extern "C" void LLVMInitializeARMAsmParser() {
6615 RegisterMCAsmParser<ARMAsmParser> X(TheARMTarget);
6616 RegisterMCAsmParser<ARMAsmParser> Y(TheThumbTarget);
6617 LLVMInitializeARMAsmLexer();
6620 #define GET_REGISTER_MATCHER
6621 #define GET_MATCHER_IMPLEMENTATION
6622 #include "ARMGenAsmMatcher.inc"