1 //===-- ARMAsmParser.cpp - Parse ARM assembly to MCInst instructions ------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "MCTargetDesc/ARMBaseInfo.h"
11 #include "MCTargetDesc/ARMAddressingModes.h"
12 #include "MCTargetDesc/ARMMCExpr.h"
13 #include "llvm/MC/MCParser/MCAsmLexer.h"
14 #include "llvm/MC/MCParser/MCAsmParser.h"
15 #include "llvm/MC/MCParser/MCParsedAsmOperand.h"
16 #include "llvm/MC/MCAsmInfo.h"
17 #include "llvm/MC/MCContext.h"
18 #include "llvm/MC/MCStreamer.h"
19 #include "llvm/MC/MCExpr.h"
20 #include "llvm/MC/MCInst.h"
21 #include "llvm/MC/MCInstrDesc.h"
22 #include "llvm/MC/MCRegisterInfo.h"
23 #include "llvm/MC/MCSubtargetInfo.h"
24 #include "llvm/MC/MCTargetAsmParser.h"
25 #include "llvm/Support/MathExtras.h"
26 #include "llvm/Support/SourceMgr.h"
27 #include "llvm/Support/TargetRegistry.h"
28 #include "llvm/Support/raw_ostream.h"
29 #include "llvm/ADT/BitVector.h"
30 #include "llvm/ADT/OwningPtr.h"
31 #include "llvm/ADT/STLExtras.h"
32 #include "llvm/ADT/SmallVector.h"
33 #include "llvm/ADT/StringSwitch.h"
34 #include "llvm/ADT/Twine.h"
42 enum VectorLaneTy { NoLanes, AllLanes, IndexedLane };
44 class ARMAsmParser : public MCTargetAsmParser {
48 // Map of register aliases registers via the .req directive.
49 StringMap<unsigned> RegisterReqs;
52 ARMCC::CondCodes Cond; // Condition for IT block.
53 unsigned Mask:4; // Condition mask for instructions.
54 // Starting at first 1 (from lsb).
55 // '1' condition as indicated in IT.
56 // '0' inverse of condition (else).
57 // Count of instructions in IT block is
58 // 4 - trailingzeroes(mask)
60 bool FirstCond; // Explicit flag for when we're parsing the
61 // First instruction in the IT block. It's
62 // implied in the mask, so needs special
65 unsigned CurPosition; // Current position in parsing of IT
66 // block. In range [0,3]. Initialized
67 // according to count of instructions in block.
68 // ~0U if no active IT block.
70 bool inITBlock() { return ITState.CurPosition != ~0U;}
71 void forwardITPosition() {
72 if (!inITBlock()) return;
73 // Move to the next instruction in the IT block, if there is one. If not,
74 // mark the block as done.
75 unsigned TZ = CountTrailingZeros_32(ITState.Mask);
76 if (++ITState.CurPosition == 5 - TZ)
77 ITState.CurPosition = ~0U; // Done with the IT block after this.
81 MCAsmParser &getParser() const { return Parser; }
82 MCAsmLexer &getLexer() const { return Parser.getLexer(); }
84 void Warning(SMLoc L, const Twine &Msg) { Parser.Warning(L, Msg); }
85 bool Error(SMLoc L, const Twine &Msg) { return Parser.Error(L, Msg); }
87 int tryParseRegister();
88 bool tryParseRegisterWithWriteBack(SmallVectorImpl<MCParsedAsmOperand*> &);
89 int tryParseShiftRegister(SmallVectorImpl<MCParsedAsmOperand*> &);
90 bool parseRegisterList(SmallVectorImpl<MCParsedAsmOperand*> &);
91 bool parseMemory(SmallVectorImpl<MCParsedAsmOperand*> &);
92 bool parseOperand(SmallVectorImpl<MCParsedAsmOperand*> &, StringRef Mnemonic);
93 bool parsePrefix(ARMMCExpr::VariantKind &RefKind);
94 bool parseMemRegOffsetShift(ARM_AM::ShiftOpc &ShiftType,
95 unsigned &ShiftAmount);
96 bool parseDirectiveWord(unsigned Size, SMLoc L);
97 bool parseDirectiveThumb(SMLoc L);
98 bool parseDirectiveARM(SMLoc L);
99 bool parseDirectiveThumbFunc(SMLoc L);
100 bool parseDirectiveCode(SMLoc L);
101 bool parseDirectiveSyntax(SMLoc L);
102 bool parseDirectiveReq(StringRef Name, SMLoc L);
103 bool parseDirectiveUnreq(SMLoc L);
104 bool parseDirectiveArch(SMLoc L);
105 bool parseDirectiveEabiAttr(SMLoc L);
107 StringRef splitMnemonic(StringRef Mnemonic, unsigned &PredicationCode,
108 bool &CarrySetting, unsigned &ProcessorIMod,
110 void getMnemonicAcceptInfo(StringRef Mnemonic, bool &CanAcceptCarrySet,
111 bool &CanAcceptPredicationCode);
113 bool isThumb() const {
114 // FIXME: Can tablegen auto-generate this?
115 return (STI.getFeatureBits() & ARM::ModeThumb) != 0;
117 bool isThumbOne() const {
118 return isThumb() && (STI.getFeatureBits() & ARM::FeatureThumb2) == 0;
120 bool isThumbTwo() const {
121 return isThumb() && (STI.getFeatureBits() & ARM::FeatureThumb2);
123 bool hasV6Ops() const {
124 return STI.getFeatureBits() & ARM::HasV6Ops;
126 bool hasV7Ops() const {
127 return STI.getFeatureBits() & ARM::HasV7Ops;
130 unsigned FB = ComputeAvailableFeatures(STI.ToggleFeature(ARM::ModeThumb));
131 setAvailableFeatures(FB);
133 bool isMClass() const {
134 return STI.getFeatureBits() & ARM::FeatureMClass;
137 /// @name Auto-generated Match Functions
140 #define GET_ASSEMBLER_HEADER
141 #include "ARMGenAsmMatcher.inc"
145 OperandMatchResultTy parseITCondCode(SmallVectorImpl<MCParsedAsmOperand*>&);
146 OperandMatchResultTy parseCoprocNumOperand(
147 SmallVectorImpl<MCParsedAsmOperand*>&);
148 OperandMatchResultTy parseCoprocRegOperand(
149 SmallVectorImpl<MCParsedAsmOperand*>&);
150 OperandMatchResultTy parseCoprocOptionOperand(
151 SmallVectorImpl<MCParsedAsmOperand*>&);
152 OperandMatchResultTy parseMemBarrierOptOperand(
153 SmallVectorImpl<MCParsedAsmOperand*>&);
154 OperandMatchResultTy parseProcIFlagsOperand(
155 SmallVectorImpl<MCParsedAsmOperand*>&);
156 OperandMatchResultTy parseMSRMaskOperand(
157 SmallVectorImpl<MCParsedAsmOperand*>&);
158 OperandMatchResultTy parsePKHImm(SmallVectorImpl<MCParsedAsmOperand*> &O,
159 StringRef Op, int Low, int High);
160 OperandMatchResultTy parsePKHLSLImm(SmallVectorImpl<MCParsedAsmOperand*> &O) {
161 return parsePKHImm(O, "lsl", 0, 31);
163 OperandMatchResultTy parsePKHASRImm(SmallVectorImpl<MCParsedAsmOperand*> &O) {
164 return parsePKHImm(O, "asr", 1, 32);
166 OperandMatchResultTy parseSetEndImm(SmallVectorImpl<MCParsedAsmOperand*>&);
167 OperandMatchResultTy parseShifterImm(SmallVectorImpl<MCParsedAsmOperand*>&);
168 OperandMatchResultTy parseRotImm(SmallVectorImpl<MCParsedAsmOperand*>&);
169 OperandMatchResultTy parseBitfield(SmallVectorImpl<MCParsedAsmOperand*>&);
170 OperandMatchResultTy parsePostIdxReg(SmallVectorImpl<MCParsedAsmOperand*>&);
171 OperandMatchResultTy parseAM3Offset(SmallVectorImpl<MCParsedAsmOperand*>&);
172 OperandMatchResultTy parseFPImm(SmallVectorImpl<MCParsedAsmOperand*>&);
173 OperandMatchResultTy parseVectorList(SmallVectorImpl<MCParsedAsmOperand*>&);
174 OperandMatchResultTy parseVectorLane(VectorLaneTy &LaneKind, unsigned &Index);
176 // Asm Match Converter Methods
177 bool cvtT2LdrdPre(MCInst &Inst, unsigned Opcode,
178 const SmallVectorImpl<MCParsedAsmOperand*> &);
179 bool cvtT2StrdPre(MCInst &Inst, unsigned Opcode,
180 const SmallVectorImpl<MCParsedAsmOperand*> &);
181 bool cvtLdWriteBackRegT2AddrModeImm8(MCInst &Inst, unsigned Opcode,
182 const SmallVectorImpl<MCParsedAsmOperand*> &);
183 bool cvtStWriteBackRegT2AddrModeImm8(MCInst &Inst, unsigned Opcode,
184 const SmallVectorImpl<MCParsedAsmOperand*> &);
185 bool cvtLdWriteBackRegAddrMode2(MCInst &Inst, unsigned Opcode,
186 const SmallVectorImpl<MCParsedAsmOperand*> &);
187 bool cvtLdWriteBackRegAddrModeImm12(MCInst &Inst, unsigned Opcode,
188 const SmallVectorImpl<MCParsedAsmOperand*> &);
189 bool cvtStWriteBackRegAddrModeImm12(MCInst &Inst, unsigned Opcode,
190 const SmallVectorImpl<MCParsedAsmOperand*> &);
191 bool cvtStWriteBackRegAddrMode2(MCInst &Inst, unsigned Opcode,
192 const SmallVectorImpl<MCParsedAsmOperand*> &);
193 bool cvtStWriteBackRegAddrMode3(MCInst &Inst, unsigned Opcode,
194 const SmallVectorImpl<MCParsedAsmOperand*> &);
195 bool cvtLdExtTWriteBackImm(MCInst &Inst, unsigned Opcode,
196 const SmallVectorImpl<MCParsedAsmOperand*> &);
197 bool cvtLdExtTWriteBackReg(MCInst &Inst, unsigned Opcode,
198 const SmallVectorImpl<MCParsedAsmOperand*> &);
199 bool cvtStExtTWriteBackImm(MCInst &Inst, unsigned Opcode,
200 const SmallVectorImpl<MCParsedAsmOperand*> &);
201 bool cvtStExtTWriteBackReg(MCInst &Inst, unsigned Opcode,
202 const SmallVectorImpl<MCParsedAsmOperand*> &);
203 bool cvtLdrdPre(MCInst &Inst, unsigned Opcode,
204 const SmallVectorImpl<MCParsedAsmOperand*> &);
205 bool cvtStrdPre(MCInst &Inst, unsigned Opcode,
206 const SmallVectorImpl<MCParsedAsmOperand*> &);
207 bool cvtLdWriteBackRegAddrMode3(MCInst &Inst, unsigned Opcode,
208 const SmallVectorImpl<MCParsedAsmOperand*> &);
209 bool cvtThumbMultiply(MCInst &Inst, unsigned Opcode,
210 const SmallVectorImpl<MCParsedAsmOperand*> &);
211 bool cvtVLDwbFixed(MCInst &Inst, unsigned Opcode,
212 const SmallVectorImpl<MCParsedAsmOperand*> &);
213 bool cvtVLDwbRegister(MCInst &Inst, unsigned Opcode,
214 const SmallVectorImpl<MCParsedAsmOperand*> &);
215 bool cvtVSTwbFixed(MCInst &Inst, unsigned Opcode,
216 const SmallVectorImpl<MCParsedAsmOperand*> &);
217 bool cvtVSTwbRegister(MCInst &Inst, unsigned Opcode,
218 const SmallVectorImpl<MCParsedAsmOperand*> &);
220 bool validateInstruction(MCInst &Inst,
221 const SmallVectorImpl<MCParsedAsmOperand*> &Ops);
222 bool processInstruction(MCInst &Inst,
223 const SmallVectorImpl<MCParsedAsmOperand*> &Ops);
224 bool shouldOmitCCOutOperand(StringRef Mnemonic,
225 SmallVectorImpl<MCParsedAsmOperand*> &Operands);
228 enum ARMMatchResultTy {
229 Match_RequiresITBlock = FIRST_TARGET_MATCH_RESULT_TY,
230 Match_RequiresNotITBlock,
235 ARMAsmParser(MCSubtargetInfo &_STI, MCAsmParser &_Parser)
236 : MCTargetAsmParser(), STI(_STI), Parser(_Parser) {
237 MCAsmParserExtension::Initialize(_Parser);
239 // Initialize the set of available features.
240 setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
242 // Not in an ITBlock to start with.
243 ITState.CurPosition = ~0U;
246 // Implementation of the MCTargetAsmParser interface:
247 bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc);
248 bool ParseInstruction(StringRef Name, SMLoc NameLoc,
249 SmallVectorImpl<MCParsedAsmOperand*> &Operands);
250 bool ParseDirective(AsmToken DirectiveID);
252 unsigned checkTargetMatchPredicate(MCInst &Inst);
254 bool MatchAndEmitInstruction(SMLoc IDLoc,
255 SmallVectorImpl<MCParsedAsmOperand*> &Operands,
258 } // end anonymous namespace
262 /// ARMOperand - Instances of this class represent a parsed ARM machine
264 class ARMOperand : public MCParsedAsmOperand {
285 k_VectorListAllLanes,
291 k_BitfieldDescriptor,
295 SMLoc StartLoc, EndLoc;
296 SmallVector<unsigned, 8> Registers;
300 ARMCC::CondCodes Val;
320 ARM_PROC::IFlags Val;
336 // A vector register list is a sequential list of 1 to 4 registers.
353 unsigned Val; // encoded 8-bit representation
356 /// Combined record for all forms of ARM address expressions.
359 // Offset is in OffsetReg or OffsetImm. If both are zero, no offset
361 const MCConstantExpr *OffsetImm; // Offset immediate value
362 unsigned OffsetRegNum; // Offset register num, when OffsetImm == NULL
363 ARM_AM::ShiftOpc ShiftType; // Shift type for OffsetReg
364 unsigned ShiftImm; // shift for OffsetReg.
365 unsigned Alignment; // 0 = no alignment specified
366 // n = alignment in bytes (2, 4, 8, 16, or 32)
367 unsigned isNegative : 1; // Negated OffsetReg? (~'U' bit)
373 ARM_AM::ShiftOpc ShiftTy;
382 ARM_AM::ShiftOpc ShiftTy;
388 ARM_AM::ShiftOpc ShiftTy;
401 ARMOperand(KindTy K) : MCParsedAsmOperand(), Kind(K) {}
403 ARMOperand(const ARMOperand &o) : MCParsedAsmOperand() {
405 StartLoc = o.StartLoc;
422 case k_DPRRegisterList:
423 case k_SPRRegisterList:
424 Registers = o.Registers;
427 case k_VectorListAllLanes:
428 case k_VectorListIndexed:
429 VectorList = o.VectorList;
436 CoprocOption = o.CoprocOption;
444 case k_MemBarrierOpt:
450 case k_PostIndexRegister:
451 PostIdxReg = o.PostIdxReg;
459 case k_ShifterImmediate:
460 ShifterImm = o.ShifterImm;
462 case k_ShiftedRegister:
463 RegShiftedReg = o.RegShiftedReg;
465 case k_ShiftedImmediate:
466 RegShiftedImm = o.RegShiftedImm;
468 case k_RotateImmediate:
471 case k_BitfieldDescriptor:
472 Bitfield = o.Bitfield;
475 VectorIndex = o.VectorIndex;
480 /// getStartLoc - Get the location of the first token of this operand.
481 SMLoc getStartLoc() const { return StartLoc; }
482 /// getEndLoc - Get the location of the last token of this operand.
483 SMLoc getEndLoc() const { return EndLoc; }
485 ARMCC::CondCodes getCondCode() const {
486 assert(Kind == k_CondCode && "Invalid access!");
490 unsigned getCoproc() const {
491 assert((Kind == k_CoprocNum || Kind == k_CoprocReg) && "Invalid access!");
495 StringRef getToken() const {
496 assert(Kind == k_Token && "Invalid access!");
497 return StringRef(Tok.Data, Tok.Length);
500 unsigned getReg() const {
501 assert((Kind == k_Register || Kind == k_CCOut) && "Invalid access!");
505 const SmallVectorImpl<unsigned> &getRegList() const {
506 assert((Kind == k_RegisterList || Kind == k_DPRRegisterList ||
507 Kind == k_SPRRegisterList) && "Invalid access!");
511 const MCExpr *getImm() const {
512 assert(isImm() && "Invalid access!");
516 unsigned getFPImm() const {
517 assert(Kind == k_FPImmediate && "Invalid access!");
521 unsigned getVectorIndex() const {
522 assert(Kind == k_VectorIndex && "Invalid access!");
523 return VectorIndex.Val;
526 ARM_MB::MemBOpt getMemBarrierOpt() const {
527 assert(Kind == k_MemBarrierOpt && "Invalid access!");
531 ARM_PROC::IFlags getProcIFlags() const {
532 assert(Kind == k_ProcIFlags && "Invalid access!");
536 unsigned getMSRMask() const {
537 assert(Kind == k_MSRMask && "Invalid access!");
541 bool isCoprocNum() const { return Kind == k_CoprocNum; }
542 bool isCoprocReg() const { return Kind == k_CoprocReg; }
543 bool isCoprocOption() const { return Kind == k_CoprocOption; }
544 bool isCondCode() const { return Kind == k_CondCode; }
545 bool isCCOut() const { return Kind == k_CCOut; }
546 bool isITMask() const { return Kind == k_ITCondMask; }
547 bool isITCondCode() const { return Kind == k_CondCode; }
548 bool isImm() const { return Kind == k_Immediate; }
549 bool isFPImm() const { return Kind == k_FPImmediate; }
550 bool isFBits16() const {
551 if (!isImm()) return false;
552 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
553 if (!CE) return false;
554 int64_t Value = CE->getValue();
555 return Value >= 0 && Value <= 16;
557 bool isFBits32() const {
558 if (!isImm()) return false;
559 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
560 if (!CE) return false;
561 int64_t Value = CE->getValue();
562 return Value >= 1 && Value <= 32;
564 bool isImm8s4() const {
565 if (!isImm()) return false;
566 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
567 if (!CE) return false;
568 int64_t Value = CE->getValue();
569 return ((Value & 3) == 0) && Value >= -1020 && Value <= 1020;
571 bool isImm0_1020s4() const {
572 if (!isImm()) return false;
573 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
574 if (!CE) return false;
575 int64_t Value = CE->getValue();
576 return ((Value & 3) == 0) && Value >= 0 && Value <= 1020;
578 bool isImm0_508s4() const {
579 if (!isImm()) return false;
580 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
581 if (!CE) return false;
582 int64_t Value = CE->getValue();
583 return ((Value & 3) == 0) && Value >= 0 && Value <= 508;
585 bool isImm0_255() const {
586 if (!isImm()) return false;
587 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
588 if (!CE) return false;
589 int64_t Value = CE->getValue();
590 return Value >= 0 && Value < 256;
592 bool isImm0_1() const {
593 if (!isImm()) return false;
594 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
595 if (!CE) return false;
596 int64_t Value = CE->getValue();
597 return Value >= 0 && Value < 2;
599 bool isImm0_3() const {
600 if (!isImm()) return false;
601 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
602 if (!CE) return false;
603 int64_t Value = CE->getValue();
604 return Value >= 0 && Value < 4;
606 bool isImm0_7() const {
607 if (!isImm()) return false;
608 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
609 if (!CE) return false;
610 int64_t Value = CE->getValue();
611 return Value >= 0 && Value < 8;
613 bool isImm0_15() const {
614 if (!isImm()) return false;
615 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
616 if (!CE) return false;
617 int64_t Value = CE->getValue();
618 return Value >= 0 && Value < 16;
620 bool isImm0_31() const {
621 if (!isImm()) return false;
622 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
623 if (!CE) return false;
624 int64_t Value = CE->getValue();
625 return Value >= 0 && Value < 32;
627 bool isImm0_63() const {
628 if (!isImm()) return false;
629 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
630 if (!CE) return false;
631 int64_t Value = CE->getValue();
632 return Value >= 0 && Value < 64;
634 bool isImm8() const {
635 if (!isImm()) return false;
636 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
637 if (!CE) return false;
638 int64_t Value = CE->getValue();
641 bool isImm16() const {
642 if (!isImm()) return false;
643 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
644 if (!CE) return false;
645 int64_t Value = CE->getValue();
648 bool isImm32() const {
649 if (!isImm()) return false;
650 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
651 if (!CE) return false;
652 int64_t Value = CE->getValue();
655 bool isShrImm8() const {
656 if (!isImm()) return false;
657 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
658 if (!CE) return false;
659 int64_t Value = CE->getValue();
660 return Value > 0 && Value <= 8;
662 bool isShrImm16() const {
663 if (!isImm()) return false;
664 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
665 if (!CE) return false;
666 int64_t Value = CE->getValue();
667 return Value > 0 && Value <= 16;
669 bool isShrImm32() const {
670 if (!isImm()) return false;
671 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
672 if (!CE) return false;
673 int64_t Value = CE->getValue();
674 return Value > 0 && Value <= 32;
676 bool isShrImm64() const {
677 if (!isImm()) return false;
678 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
679 if (!CE) return false;
680 int64_t Value = CE->getValue();
681 return Value > 0 && Value <= 64;
683 bool isImm1_7() const {
684 if (!isImm()) return false;
685 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
686 if (!CE) return false;
687 int64_t Value = CE->getValue();
688 return Value > 0 && Value < 8;
690 bool isImm1_15() const {
691 if (!isImm()) return false;
692 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
693 if (!CE) return false;
694 int64_t Value = CE->getValue();
695 return Value > 0 && Value < 16;
697 bool isImm1_31() const {
698 if (!isImm()) return false;
699 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
700 if (!CE) return false;
701 int64_t Value = CE->getValue();
702 return Value > 0 && Value < 32;
704 bool isImm1_16() const {
705 if (!isImm()) return false;
706 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
707 if (!CE) return false;
708 int64_t Value = CE->getValue();
709 return Value > 0 && Value < 17;
711 bool isImm1_32() const {
712 if (!isImm()) return false;
713 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
714 if (!CE) return false;
715 int64_t Value = CE->getValue();
716 return Value > 0 && Value < 33;
718 bool isImm0_32() const {
719 if (!isImm()) return false;
720 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
721 if (!CE) return false;
722 int64_t Value = CE->getValue();
723 return Value >= 0 && Value < 33;
725 bool isImm0_65535() const {
726 if (!isImm()) return false;
727 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
728 if (!CE) return false;
729 int64_t Value = CE->getValue();
730 return Value >= 0 && Value < 65536;
732 bool isImm0_65535Expr() const {
733 if (!isImm()) return false;
734 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
735 // If it's not a constant expression, it'll generate a fixup and be
737 if (!CE) return true;
738 int64_t Value = CE->getValue();
739 return Value >= 0 && Value < 65536;
741 bool isImm24bit() const {
742 if (!isImm()) return false;
743 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
744 if (!CE) return false;
745 int64_t Value = CE->getValue();
746 return Value >= 0 && Value <= 0xffffff;
748 bool isImmThumbSR() const {
749 if (!isImm()) return false;
750 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
751 if (!CE) return false;
752 int64_t Value = CE->getValue();
753 return Value > 0 && Value < 33;
755 bool isPKHLSLImm() const {
756 if (!isImm()) return false;
757 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
758 if (!CE) return false;
759 int64_t Value = CE->getValue();
760 return Value >= 0 && Value < 32;
762 bool isPKHASRImm() const {
763 if (!isImm()) return false;
764 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
765 if (!CE) return false;
766 int64_t Value = CE->getValue();
767 return Value > 0 && Value <= 32;
769 bool isARMSOImm() const {
770 if (!isImm()) return false;
771 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
772 if (!CE) return false;
773 int64_t Value = CE->getValue();
774 return ARM_AM::getSOImmVal(Value) != -1;
776 bool isARMSOImmNot() const {
777 if (!isImm()) return false;
778 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
779 if (!CE) return false;
780 int64_t Value = CE->getValue();
781 return ARM_AM::getSOImmVal(~Value) != -1;
783 bool isARMSOImmNeg() const {
784 if (!isImm()) return false;
785 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
786 if (!CE) return false;
787 int64_t Value = CE->getValue();
788 return ARM_AM::getSOImmVal(-Value) != -1;
790 bool isT2SOImm() const {
791 if (!isImm()) return false;
792 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
793 if (!CE) return false;
794 int64_t Value = CE->getValue();
795 return ARM_AM::getT2SOImmVal(Value) != -1;
797 bool isT2SOImmNot() const {
798 if (!isImm()) return false;
799 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
800 if (!CE) return false;
801 int64_t Value = CE->getValue();
802 return ARM_AM::getT2SOImmVal(~Value) != -1;
804 bool isT2SOImmNeg() const {
805 if (!isImm()) return false;
806 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
807 if (!CE) return false;
808 int64_t Value = CE->getValue();
809 return ARM_AM::getT2SOImmVal(-Value) != -1;
811 bool isSetEndImm() const {
812 if (!isImm()) return false;
813 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
814 if (!CE) return false;
815 int64_t Value = CE->getValue();
816 return Value == 1 || Value == 0;
818 bool isReg() const { return Kind == k_Register; }
819 bool isRegList() const { return Kind == k_RegisterList; }
820 bool isDPRRegList() const { return Kind == k_DPRRegisterList; }
821 bool isSPRRegList() const { return Kind == k_SPRRegisterList; }
822 bool isToken() const { return Kind == k_Token; }
823 bool isMemBarrierOpt() const { return Kind == k_MemBarrierOpt; }
824 bool isMemory() const { return Kind == k_Memory; }
825 bool isShifterImm() const { return Kind == k_ShifterImmediate; }
826 bool isRegShiftedReg() const { return Kind == k_ShiftedRegister; }
827 bool isRegShiftedImm() const { return Kind == k_ShiftedImmediate; }
828 bool isRotImm() const { return Kind == k_RotateImmediate; }
829 bool isBitfield() const { return Kind == k_BitfieldDescriptor; }
830 bool isPostIdxRegShifted() const { return Kind == k_PostIndexRegister; }
831 bool isPostIdxReg() const {
832 return Kind == k_PostIndexRegister && PostIdxReg.ShiftTy ==ARM_AM::no_shift;
834 bool isMemNoOffset(bool alignOK = false) const {
837 // No offset of any kind.
838 return Memory.OffsetRegNum == 0 && Memory.OffsetImm == 0 &&
839 (alignOK || Memory.Alignment == 0);
841 bool isMemPCRelImm12() const {
842 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
844 // Base register must be PC.
845 if (Memory.BaseRegNum != ARM::PC)
847 // Immediate offset in range [-4095, 4095].
848 if (!Memory.OffsetImm) return true;
849 int64_t Val = Memory.OffsetImm->getValue();
850 return (Val > -4096 && Val < 4096) || (Val == INT32_MIN);
852 bool isAlignedMemory() const {
853 return isMemNoOffset(true);
855 bool isAddrMode2() const {
856 if (!isMemory() || Memory.Alignment != 0) return false;
857 // Check for register offset.
858 if (Memory.OffsetRegNum) return true;
859 // Immediate offset in range [-4095, 4095].
860 if (!Memory.OffsetImm) return true;
861 int64_t Val = Memory.OffsetImm->getValue();
862 return Val > -4096 && Val < 4096;
864 bool isAM2OffsetImm() const {
865 if (!isImm()) return false;
866 // Immediate offset in range [-4095, 4095].
867 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
868 if (!CE) return false;
869 int64_t Val = CE->getValue();
870 return Val > -4096 && Val < 4096;
872 bool isAddrMode3() const {
873 // If we have an immediate that's not a constant, treat it as a label
874 // reference needing a fixup. If it is a constant, it's something else
876 if (isImm() && !isa<MCConstantExpr>(getImm()))
878 if (!isMemory() || Memory.Alignment != 0) return false;
879 // No shifts are legal for AM3.
880 if (Memory.ShiftType != ARM_AM::no_shift) return false;
881 // Check for register offset.
882 if (Memory.OffsetRegNum) return true;
883 // Immediate offset in range [-255, 255].
884 if (!Memory.OffsetImm) return true;
885 int64_t Val = Memory.OffsetImm->getValue();
886 return Val > -256 && Val < 256;
888 bool isAM3Offset() const {
889 if (Kind != k_Immediate && Kind != k_PostIndexRegister)
891 if (Kind == k_PostIndexRegister)
892 return PostIdxReg.ShiftTy == ARM_AM::no_shift;
893 // Immediate offset in range [-255, 255].
894 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
895 if (!CE) return false;
896 int64_t Val = CE->getValue();
897 // Special case, #-0 is INT32_MIN.
898 return (Val > -256 && Val < 256) || Val == INT32_MIN;
900 bool isAddrMode5() const {
901 // If we have an immediate that's not a constant, treat it as a label
902 // reference needing a fixup. If it is a constant, it's something else
904 if (isImm() && !isa<MCConstantExpr>(getImm()))
906 if (!isMemory() || Memory.Alignment != 0) return false;
907 // Check for register offset.
908 if (Memory.OffsetRegNum) return false;
909 // Immediate offset in range [-1020, 1020] and a multiple of 4.
910 if (!Memory.OffsetImm) return true;
911 int64_t Val = Memory.OffsetImm->getValue();
912 return (Val >= -1020 && Val <= 1020 && ((Val & 3) == 0)) ||
915 bool isMemTBB() const {
916 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
917 Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0)
921 bool isMemTBH() const {
922 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
923 Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm != 1 ||
924 Memory.Alignment != 0 )
928 bool isMemRegOffset() const {
929 if (!isMemory() || !Memory.OffsetRegNum || Memory.Alignment != 0)
933 bool isT2MemRegOffset() const {
934 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
935 Memory.Alignment != 0)
937 // Only lsl #{0, 1, 2, 3} allowed.
938 if (Memory.ShiftType == ARM_AM::no_shift)
940 if (Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm > 3)
944 bool isMemThumbRR() const {
945 // Thumb reg+reg addressing is simple. Just two registers, a base and
946 // an offset. No shifts, negations or any other complicating factors.
947 if (!isMemory() || !Memory.OffsetRegNum || Memory.isNegative ||
948 Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0)
950 return isARMLowRegister(Memory.BaseRegNum) &&
951 (!Memory.OffsetRegNum || isARMLowRegister(Memory.OffsetRegNum));
953 bool isMemThumbRIs4() const {
954 if (!isMemory() || Memory.OffsetRegNum != 0 ||
955 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
957 // Immediate offset, multiple of 4 in range [0, 124].
958 if (!Memory.OffsetImm) return true;
959 int64_t Val = Memory.OffsetImm->getValue();
960 return Val >= 0 && Val <= 124 && (Val % 4) == 0;
962 bool isMemThumbRIs2() const {
963 if (!isMemory() || Memory.OffsetRegNum != 0 ||
964 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
966 // Immediate offset, multiple of 4 in range [0, 62].
967 if (!Memory.OffsetImm) return true;
968 int64_t Val = Memory.OffsetImm->getValue();
969 return Val >= 0 && Val <= 62 && (Val % 2) == 0;
971 bool isMemThumbRIs1() const {
972 if (!isMemory() || Memory.OffsetRegNum != 0 ||
973 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
975 // Immediate offset in range [0, 31].
976 if (!Memory.OffsetImm) return true;
977 int64_t Val = Memory.OffsetImm->getValue();
978 return Val >= 0 && Val <= 31;
980 bool isMemThumbSPI() const {
981 if (!isMemory() || Memory.OffsetRegNum != 0 ||
982 Memory.BaseRegNum != ARM::SP || Memory.Alignment != 0)
984 // Immediate offset, multiple of 4 in range [0, 1020].
985 if (!Memory.OffsetImm) return true;
986 int64_t Val = Memory.OffsetImm->getValue();
987 return Val >= 0 && Val <= 1020 && (Val % 4) == 0;
989 bool isMemImm8s4Offset() const {
990 // If we have an immediate that's not a constant, treat it as a label
991 // reference needing a fixup. If it is a constant, it's something else
993 if (isImm() && !isa<MCConstantExpr>(getImm()))
995 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
997 // Immediate offset a multiple of 4 in range [-1020, 1020].
998 if (!Memory.OffsetImm) return true;
999 int64_t Val = Memory.OffsetImm->getValue();
1000 return Val >= -1020 && Val <= 1020 && (Val & 3) == 0;
1002 bool isMemImm0_1020s4Offset() const {
1003 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1005 // Immediate offset a multiple of 4 in range [0, 1020].
1006 if (!Memory.OffsetImm) return true;
1007 int64_t Val = Memory.OffsetImm->getValue();
1008 return Val >= 0 && Val <= 1020 && (Val & 3) == 0;
1010 bool isMemImm8Offset() const {
1011 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1013 // Base reg of PC isn't allowed for these encodings.
1014 if (Memory.BaseRegNum == ARM::PC) return false;
1015 // Immediate offset in range [-255, 255].
1016 if (!Memory.OffsetImm) return true;
1017 int64_t Val = Memory.OffsetImm->getValue();
1018 return (Val == INT32_MIN) || (Val > -256 && Val < 256);
1020 bool isMemPosImm8Offset() const {
1021 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1023 // Immediate offset in range [0, 255].
1024 if (!Memory.OffsetImm) return true;
1025 int64_t Val = Memory.OffsetImm->getValue();
1026 return Val >= 0 && Val < 256;
1028 bool isMemNegImm8Offset() const {
1029 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1031 // Base reg of PC isn't allowed for these encodings.
1032 if (Memory.BaseRegNum == ARM::PC) return false;
1033 // Immediate offset in range [-255, -1].
1034 if (!Memory.OffsetImm) return false;
1035 int64_t Val = Memory.OffsetImm->getValue();
1036 return (Val == INT32_MIN) || (Val > -256 && Val < 0);
1038 bool isMemUImm12Offset() const {
1039 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1041 // Immediate offset in range [0, 4095].
1042 if (!Memory.OffsetImm) return true;
1043 int64_t Val = Memory.OffsetImm->getValue();
1044 return (Val >= 0 && Val < 4096);
1046 bool isMemImm12Offset() const {
1047 // If we have an immediate that's not a constant, treat it as a label
1048 // reference needing a fixup. If it is a constant, it's something else
1049 // and we reject it.
1050 if (isImm() && !isa<MCConstantExpr>(getImm()))
1053 if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1055 // Immediate offset in range [-4095, 4095].
1056 if (!Memory.OffsetImm) return true;
1057 int64_t Val = Memory.OffsetImm->getValue();
1058 return (Val > -4096 && Val < 4096) || (Val == INT32_MIN);
1060 bool isPostIdxImm8() 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 > -256 && Val < 256) || (Val == INT32_MIN);
1067 bool isPostIdxImm8s4() const {
1068 if (!isImm()) return false;
1069 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1070 if (!CE) return false;
1071 int64_t Val = CE->getValue();
1072 return ((Val & 3) == 0 && Val >= -1020 && Val <= 1020) ||
1076 bool isMSRMask() const { return Kind == k_MSRMask; }
1077 bool isProcIFlags() const { return Kind == k_ProcIFlags; }
1080 bool isSingleSpacedVectorList() const {
1081 return Kind == k_VectorList && !VectorList.isDoubleSpaced;
1083 bool isDoubleSpacedVectorList() const {
1084 return Kind == k_VectorList && VectorList.isDoubleSpaced;
1086 bool isVecListOneD() const {
1087 if (!isSingleSpacedVectorList()) return false;
1088 return VectorList.Count == 1;
1091 bool isVecListTwoD() const {
1092 if (!isSingleSpacedVectorList()) return false;
1093 return VectorList.Count == 2;
1096 bool isVecListThreeD() const {
1097 if (!isSingleSpacedVectorList()) return false;
1098 return VectorList.Count == 3;
1101 bool isVecListFourD() const {
1102 if (!isSingleSpacedVectorList()) return false;
1103 return VectorList.Count == 4;
1106 bool isVecListTwoQ() const {
1107 if (!isDoubleSpacedVectorList()) return false;
1108 return VectorList.Count == 2;
1111 bool isSingleSpacedVectorAllLanes() const {
1112 return Kind == k_VectorListAllLanes && !VectorList.isDoubleSpaced;
1114 bool isDoubleSpacedVectorAllLanes() const {
1115 return Kind == k_VectorListAllLanes && VectorList.isDoubleSpaced;
1117 bool isVecListOneDAllLanes() const {
1118 if (!isSingleSpacedVectorAllLanes()) return false;
1119 return VectorList.Count == 1;
1122 bool isVecListTwoDAllLanes() const {
1123 if (!isSingleSpacedVectorAllLanes()) return false;
1124 return VectorList.Count == 2;
1127 bool isVecListTwoQAllLanes() const {
1128 if (!isDoubleSpacedVectorAllLanes()) return false;
1129 return VectorList.Count == 2;
1132 bool isSingleSpacedVectorIndexed() const {
1133 return Kind == k_VectorListIndexed && !VectorList.isDoubleSpaced;
1135 bool isDoubleSpacedVectorIndexed() const {
1136 return Kind == k_VectorListIndexed && VectorList.isDoubleSpaced;
1138 bool isVecListOneDByteIndexed() const {
1139 if (!isSingleSpacedVectorIndexed()) return false;
1140 return VectorList.Count == 1 && VectorList.LaneIndex <= 7;
1143 bool isVecListOneDHWordIndexed() const {
1144 if (!isSingleSpacedVectorIndexed()) return false;
1145 return VectorList.Count == 1 && VectorList.LaneIndex <= 3;
1148 bool isVecListOneDWordIndexed() const {
1149 if (!isSingleSpacedVectorIndexed()) return false;
1150 return VectorList.Count == 1 && VectorList.LaneIndex <= 1;
1153 bool isVecListTwoDByteIndexed() const {
1154 if (!isSingleSpacedVectorIndexed()) return false;
1155 return VectorList.Count == 2 && VectorList.LaneIndex <= 7;
1158 bool isVecListTwoDHWordIndexed() const {
1159 if (!isSingleSpacedVectorIndexed()) return false;
1160 return VectorList.Count == 2 && VectorList.LaneIndex <= 3;
1163 bool isVecListTwoQWordIndexed() const {
1164 if (!isDoubleSpacedVectorIndexed()) return false;
1165 return VectorList.Count == 2 && VectorList.LaneIndex <= 1;
1168 bool isVecListTwoQHWordIndexed() const {
1169 if (!isDoubleSpacedVectorIndexed()) return false;
1170 return VectorList.Count == 2 && VectorList.LaneIndex <= 3;
1173 bool isVecListTwoDWordIndexed() const {
1174 if (!isSingleSpacedVectorIndexed()) return false;
1175 return VectorList.Count == 2 && VectorList.LaneIndex <= 1;
1178 bool isVectorIndex8() const {
1179 if (Kind != k_VectorIndex) return false;
1180 return VectorIndex.Val < 8;
1182 bool isVectorIndex16() const {
1183 if (Kind != k_VectorIndex) return false;
1184 return VectorIndex.Val < 4;
1186 bool isVectorIndex32() const {
1187 if (Kind != k_VectorIndex) return false;
1188 return VectorIndex.Val < 2;
1191 bool isNEONi8splat() const {
1192 if (!isImm()) return false;
1193 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1194 // Must be a constant.
1195 if (!CE) return false;
1196 int64_t Value = CE->getValue();
1197 // i8 value splatted across 8 bytes. The immediate is just the 8 byte
1199 return Value >= 0 && Value < 256;
1202 bool isNEONi16splat() const {
1203 if (!isImm()) return false;
1204 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1205 // Must be a constant.
1206 if (!CE) return false;
1207 int64_t Value = CE->getValue();
1208 // i16 value in the range [0,255] or [0x0100, 0xff00]
1209 return (Value >= 0 && Value < 256) || (Value >= 0x0100 && Value <= 0xff00);
1212 bool isNEONi32splat() const {
1213 if (!isImm()) return false;
1214 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1215 // Must be a constant.
1216 if (!CE) return false;
1217 int64_t Value = CE->getValue();
1218 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X.
1219 return (Value >= 0 && Value < 256) ||
1220 (Value >= 0x0100 && Value <= 0xff00) ||
1221 (Value >= 0x010000 && Value <= 0xff0000) ||
1222 (Value >= 0x01000000 && Value <= 0xff000000);
1225 bool isNEONi32vmov() const {
1226 if (!isImm()) return false;
1227 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1228 // Must be a constant.
1229 if (!CE) return false;
1230 int64_t Value = CE->getValue();
1231 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X,
1232 // for VMOV/VMVN only, 00Xf or 0Xff are also accepted.
1233 return (Value >= 0 && Value < 256) ||
1234 (Value >= 0x0100 && Value <= 0xff00) ||
1235 (Value >= 0x010000 && Value <= 0xff0000) ||
1236 (Value >= 0x01000000 && Value <= 0xff000000) ||
1237 (Value >= 0x01ff && Value <= 0xffff && (Value & 0xff) == 0xff) ||
1238 (Value >= 0x01ffff && Value <= 0xffffff && (Value & 0xffff) == 0xffff);
1240 bool isNEONi32vmovNeg() const {
1241 if (!isImm()) return false;
1242 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1243 // Must be a constant.
1244 if (!CE) return false;
1245 int64_t Value = ~CE->getValue();
1246 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X,
1247 // for VMOV/VMVN only, 00Xf or 0Xff are also accepted.
1248 return (Value >= 0 && Value < 256) ||
1249 (Value >= 0x0100 && Value <= 0xff00) ||
1250 (Value >= 0x010000 && Value <= 0xff0000) ||
1251 (Value >= 0x01000000 && Value <= 0xff000000) ||
1252 (Value >= 0x01ff && Value <= 0xffff && (Value & 0xff) == 0xff) ||
1253 (Value >= 0x01ffff && Value <= 0xffffff && (Value & 0xffff) == 0xffff);
1256 bool isNEONi64splat() const {
1257 if (!isImm()) return false;
1258 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1259 // Must be a constant.
1260 if (!CE) return false;
1261 uint64_t Value = CE->getValue();
1262 // i64 value with each byte being either 0 or 0xff.
1263 for (unsigned i = 0; i < 8; ++i)
1264 if ((Value & 0xff) != 0 && (Value & 0xff) != 0xff) return false;
1268 void addExpr(MCInst &Inst, const MCExpr *Expr) const {
1269 // Add as immediates when possible. Null MCExpr = 0.
1271 Inst.addOperand(MCOperand::CreateImm(0));
1272 else if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr))
1273 Inst.addOperand(MCOperand::CreateImm(CE->getValue()));
1275 Inst.addOperand(MCOperand::CreateExpr(Expr));
1278 void addCondCodeOperands(MCInst &Inst, unsigned N) const {
1279 assert(N == 2 && "Invalid number of operands!");
1280 Inst.addOperand(MCOperand::CreateImm(unsigned(getCondCode())));
1281 unsigned RegNum = getCondCode() == ARMCC::AL ? 0: ARM::CPSR;
1282 Inst.addOperand(MCOperand::CreateReg(RegNum));
1285 void addCoprocNumOperands(MCInst &Inst, unsigned N) const {
1286 assert(N == 1 && "Invalid number of operands!");
1287 Inst.addOperand(MCOperand::CreateImm(getCoproc()));
1290 void addCoprocRegOperands(MCInst &Inst, unsigned N) const {
1291 assert(N == 1 && "Invalid number of operands!");
1292 Inst.addOperand(MCOperand::CreateImm(getCoproc()));
1295 void addCoprocOptionOperands(MCInst &Inst, unsigned N) const {
1296 assert(N == 1 && "Invalid number of operands!");
1297 Inst.addOperand(MCOperand::CreateImm(CoprocOption.Val));
1300 void addITMaskOperands(MCInst &Inst, unsigned N) const {
1301 assert(N == 1 && "Invalid number of operands!");
1302 Inst.addOperand(MCOperand::CreateImm(ITMask.Mask));
1305 void addITCondCodeOperands(MCInst &Inst, unsigned N) const {
1306 assert(N == 1 && "Invalid number of operands!");
1307 Inst.addOperand(MCOperand::CreateImm(unsigned(getCondCode())));
1310 void addCCOutOperands(MCInst &Inst, unsigned N) const {
1311 assert(N == 1 && "Invalid number of operands!");
1312 Inst.addOperand(MCOperand::CreateReg(getReg()));
1315 void addRegOperands(MCInst &Inst, unsigned N) const {
1316 assert(N == 1 && "Invalid number of operands!");
1317 Inst.addOperand(MCOperand::CreateReg(getReg()));
1320 void addRegShiftedRegOperands(MCInst &Inst, unsigned N) const {
1321 assert(N == 3 && "Invalid number of operands!");
1322 assert(isRegShiftedReg() &&
1323 "addRegShiftedRegOperands() on non RegShiftedReg!");
1324 Inst.addOperand(MCOperand::CreateReg(RegShiftedReg.SrcReg));
1325 Inst.addOperand(MCOperand::CreateReg(RegShiftedReg.ShiftReg));
1326 Inst.addOperand(MCOperand::CreateImm(
1327 ARM_AM::getSORegOpc(RegShiftedReg.ShiftTy, RegShiftedReg.ShiftImm)));
1330 void addRegShiftedImmOperands(MCInst &Inst, unsigned N) const {
1331 assert(N == 2 && "Invalid number of operands!");
1332 assert(isRegShiftedImm() &&
1333 "addRegShiftedImmOperands() on non RegShiftedImm!");
1334 Inst.addOperand(MCOperand::CreateReg(RegShiftedImm.SrcReg));
1335 Inst.addOperand(MCOperand::CreateImm(
1336 ARM_AM::getSORegOpc(RegShiftedImm.ShiftTy, RegShiftedImm.ShiftImm)));
1339 void addShifterImmOperands(MCInst &Inst, unsigned N) const {
1340 assert(N == 1 && "Invalid number of operands!");
1341 Inst.addOperand(MCOperand::CreateImm((ShifterImm.isASR << 5) |
1345 void addRegListOperands(MCInst &Inst, unsigned N) const {
1346 assert(N == 1 && "Invalid number of operands!");
1347 const SmallVectorImpl<unsigned> &RegList = getRegList();
1348 for (SmallVectorImpl<unsigned>::const_iterator
1349 I = RegList.begin(), E = RegList.end(); I != E; ++I)
1350 Inst.addOperand(MCOperand::CreateReg(*I));
1353 void addDPRRegListOperands(MCInst &Inst, unsigned N) const {
1354 addRegListOperands(Inst, N);
1357 void addSPRRegListOperands(MCInst &Inst, unsigned N) const {
1358 addRegListOperands(Inst, N);
1361 void addRotImmOperands(MCInst &Inst, unsigned N) const {
1362 assert(N == 1 && "Invalid number of operands!");
1363 // Encoded as val>>3. The printer handles display as 8, 16, 24.
1364 Inst.addOperand(MCOperand::CreateImm(RotImm.Imm >> 3));
1367 void addBitfieldOperands(MCInst &Inst, unsigned N) const {
1368 assert(N == 1 && "Invalid number of operands!");
1369 // Munge the lsb/width into a bitfield mask.
1370 unsigned lsb = Bitfield.LSB;
1371 unsigned width = Bitfield.Width;
1372 // Make a 32-bit mask w/ the referenced bits clear and all other bits set.
1373 uint32_t Mask = ~(((uint32_t)0xffffffff >> lsb) << (32 - width) >>
1374 (32 - (lsb + width)));
1375 Inst.addOperand(MCOperand::CreateImm(Mask));
1378 void addImmOperands(MCInst &Inst, unsigned N) const {
1379 assert(N == 1 && "Invalid number of operands!");
1380 addExpr(Inst, getImm());
1383 void addFBits16Operands(MCInst &Inst, unsigned N) const {
1384 assert(N == 1 && "Invalid number of operands!");
1385 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1386 Inst.addOperand(MCOperand::CreateImm(16 - CE->getValue()));
1389 void addFBits32Operands(MCInst &Inst, unsigned N) const {
1390 assert(N == 1 && "Invalid number of operands!");
1391 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1392 Inst.addOperand(MCOperand::CreateImm(32 - CE->getValue()));
1395 void addFPImmOperands(MCInst &Inst, unsigned N) const {
1396 assert(N == 1 && "Invalid number of operands!");
1397 Inst.addOperand(MCOperand::CreateImm(getFPImm()));
1400 void addImm8s4Operands(MCInst &Inst, unsigned N) const {
1401 assert(N == 1 && "Invalid number of operands!");
1402 // FIXME: We really want to scale the value here, but the LDRD/STRD
1403 // instruction don't encode operands that way yet.
1404 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1405 Inst.addOperand(MCOperand::CreateImm(CE->getValue()));
1408 void addImm0_1020s4Operands(MCInst &Inst, unsigned N) const {
1409 assert(N == 1 && "Invalid number of operands!");
1410 // The immediate is scaled by four in the encoding and is stored
1411 // in the MCInst as such. Lop off the low two bits here.
1412 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1413 Inst.addOperand(MCOperand::CreateImm(CE->getValue() / 4));
1416 void addImm0_508s4Operands(MCInst &Inst, unsigned N) const {
1417 assert(N == 1 && "Invalid number of operands!");
1418 // The immediate is scaled by four in the encoding and is stored
1419 // in the MCInst as such. Lop off the low two bits here.
1420 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1421 Inst.addOperand(MCOperand::CreateImm(CE->getValue() / 4));
1424 void addImm1_16Operands(MCInst &Inst, unsigned N) const {
1425 assert(N == 1 && "Invalid number of operands!");
1426 // The constant encodes as the immediate-1, and we store in the instruction
1427 // the bits as encoded, so subtract off one here.
1428 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1429 Inst.addOperand(MCOperand::CreateImm(CE->getValue() - 1));
1432 void addImm1_32Operands(MCInst &Inst, unsigned N) const {
1433 assert(N == 1 && "Invalid number of operands!");
1434 // The constant encodes as the immediate-1, and we store in the instruction
1435 // the bits as encoded, so subtract off one here.
1436 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1437 Inst.addOperand(MCOperand::CreateImm(CE->getValue() - 1));
1440 void addImmThumbSROperands(MCInst &Inst, unsigned N) const {
1441 assert(N == 1 && "Invalid number of operands!");
1442 // The constant encodes as the immediate, except for 32, which encodes as
1444 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1445 unsigned Imm = CE->getValue();
1446 Inst.addOperand(MCOperand::CreateImm((Imm == 32 ? 0 : Imm)));
1449 void addPKHASRImmOperands(MCInst &Inst, unsigned N) const {
1450 assert(N == 1 && "Invalid number of operands!");
1451 // An ASR value of 32 encodes as 0, so that's how we want to add it to
1452 // the instruction as well.
1453 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1454 int Val = CE->getValue();
1455 Inst.addOperand(MCOperand::CreateImm(Val == 32 ? 0 : Val));
1458 void addT2SOImmNotOperands(MCInst &Inst, unsigned N) const {
1459 assert(N == 1 && "Invalid number of operands!");
1460 // The operand is actually a t2_so_imm, but we have its bitwise
1461 // negation in the assembly source, so twiddle it here.
1462 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1463 Inst.addOperand(MCOperand::CreateImm(~CE->getValue()));
1466 void addT2SOImmNegOperands(MCInst &Inst, unsigned N) const {
1467 assert(N == 1 && "Invalid number of operands!");
1468 // The operand is actually a t2_so_imm, but we have its
1469 // negation in the assembly source, so twiddle it here.
1470 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1471 Inst.addOperand(MCOperand::CreateImm(-CE->getValue()));
1474 void addARMSOImmNotOperands(MCInst &Inst, unsigned N) const {
1475 assert(N == 1 && "Invalid number of operands!");
1476 // The operand is actually a so_imm, but we have its bitwise
1477 // negation in the assembly source, so twiddle it here.
1478 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1479 Inst.addOperand(MCOperand::CreateImm(~CE->getValue()));
1482 void addARMSOImmNegOperands(MCInst &Inst, unsigned N) const {
1483 assert(N == 1 && "Invalid number of operands!");
1484 // The operand is actually a so_imm, but we have its
1485 // negation in the assembly source, so twiddle it here.
1486 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1487 Inst.addOperand(MCOperand::CreateImm(-CE->getValue()));
1490 void addMemBarrierOptOperands(MCInst &Inst, unsigned N) const {
1491 assert(N == 1 && "Invalid number of operands!");
1492 Inst.addOperand(MCOperand::CreateImm(unsigned(getMemBarrierOpt())));
1495 void addMemNoOffsetOperands(MCInst &Inst, unsigned N) const {
1496 assert(N == 1 && "Invalid number of operands!");
1497 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1500 void addMemPCRelImm12Operands(MCInst &Inst, unsigned N) const {
1501 assert(N == 1 && "Invalid number of operands!");
1502 int32_t Imm = Memory.OffsetImm->getValue();
1503 // FIXME: Handle #-0
1504 if (Imm == INT32_MIN) Imm = 0;
1505 Inst.addOperand(MCOperand::CreateImm(Imm));
1508 void addAlignedMemoryOperands(MCInst &Inst, unsigned N) const {
1509 assert(N == 2 && "Invalid number of operands!");
1510 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1511 Inst.addOperand(MCOperand::CreateImm(Memory.Alignment));
1514 void addAddrMode2Operands(MCInst &Inst, unsigned N) const {
1515 assert(N == 3 && "Invalid number of operands!");
1516 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1517 if (!Memory.OffsetRegNum) {
1518 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1519 // Special case for #-0
1520 if (Val == INT32_MIN) Val = 0;
1521 if (Val < 0) Val = -Val;
1522 Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift);
1524 // For register offset, we encode the shift type and negation flag
1526 Val = ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add,
1527 Memory.ShiftImm, Memory.ShiftType);
1529 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1530 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1531 Inst.addOperand(MCOperand::CreateImm(Val));
1534 void addAM2OffsetImmOperands(MCInst &Inst, unsigned N) const {
1535 assert(N == 2 && "Invalid number of operands!");
1536 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1537 assert(CE && "non-constant AM2OffsetImm operand!");
1538 int32_t Val = CE->getValue();
1539 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1540 // Special case for #-0
1541 if (Val == INT32_MIN) Val = 0;
1542 if (Val < 0) Val = -Val;
1543 Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift);
1544 Inst.addOperand(MCOperand::CreateReg(0));
1545 Inst.addOperand(MCOperand::CreateImm(Val));
1548 void addAddrMode3Operands(MCInst &Inst, unsigned N) const {
1549 assert(N == 3 && "Invalid number of operands!");
1550 // If we have an immediate that's not a constant, treat it as a label
1551 // reference needing a fixup. If it is a constant, it's something else
1552 // and we reject it.
1554 Inst.addOperand(MCOperand::CreateExpr(getImm()));
1555 Inst.addOperand(MCOperand::CreateReg(0));
1556 Inst.addOperand(MCOperand::CreateImm(0));
1560 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1561 if (!Memory.OffsetRegNum) {
1562 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1563 // Special case for #-0
1564 if (Val == INT32_MIN) Val = 0;
1565 if (Val < 0) Val = -Val;
1566 Val = ARM_AM::getAM3Opc(AddSub, Val);
1568 // For register offset, we encode the shift type and negation flag
1570 Val = ARM_AM::getAM3Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add, 0);
1572 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1573 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1574 Inst.addOperand(MCOperand::CreateImm(Val));
1577 void addAM3OffsetOperands(MCInst &Inst, unsigned N) const {
1578 assert(N == 2 && "Invalid number of operands!");
1579 if (Kind == k_PostIndexRegister) {
1581 ARM_AM::getAM3Opc(PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub, 0);
1582 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
1583 Inst.addOperand(MCOperand::CreateImm(Val));
1588 const MCConstantExpr *CE = static_cast<const MCConstantExpr*>(getImm());
1589 int32_t Val = CE->getValue();
1590 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1591 // Special case for #-0
1592 if (Val == INT32_MIN) Val = 0;
1593 if (Val < 0) Val = -Val;
1594 Val = ARM_AM::getAM3Opc(AddSub, Val);
1595 Inst.addOperand(MCOperand::CreateReg(0));
1596 Inst.addOperand(MCOperand::CreateImm(Val));
1599 void addAddrMode5Operands(MCInst &Inst, unsigned N) const {
1600 assert(N == 2 && "Invalid number of operands!");
1601 // If we have an immediate that's not a constant, treat it as a label
1602 // reference needing a fixup. If it is a constant, it's something else
1603 // and we reject it.
1605 Inst.addOperand(MCOperand::CreateExpr(getImm()));
1606 Inst.addOperand(MCOperand::CreateImm(0));
1610 // The lower two bits are always zero and as such are not encoded.
1611 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0;
1612 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1613 // Special case for #-0
1614 if (Val == INT32_MIN) Val = 0;
1615 if (Val < 0) Val = -Val;
1616 Val = ARM_AM::getAM5Opc(AddSub, Val);
1617 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1618 Inst.addOperand(MCOperand::CreateImm(Val));
1621 void addMemImm8s4OffsetOperands(MCInst &Inst, unsigned N) const {
1622 assert(N == 2 && "Invalid number of operands!");
1623 // If we have an immediate that's not a constant, treat it as a label
1624 // reference needing a fixup. If it is a constant, it's something else
1625 // and we reject it.
1627 Inst.addOperand(MCOperand::CreateExpr(getImm()));
1628 Inst.addOperand(MCOperand::CreateImm(0));
1632 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1633 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1634 Inst.addOperand(MCOperand::CreateImm(Val));
1637 void addMemImm0_1020s4OffsetOperands(MCInst &Inst, unsigned N) const {
1638 assert(N == 2 && "Invalid number of operands!");
1639 // The lower two bits are always zero and as such are not encoded.
1640 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0;
1641 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1642 Inst.addOperand(MCOperand::CreateImm(Val));
1645 void addMemImm8OffsetOperands(MCInst &Inst, unsigned N) const {
1646 assert(N == 2 && "Invalid number of operands!");
1647 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1648 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1649 Inst.addOperand(MCOperand::CreateImm(Val));
1652 void addMemPosImm8OffsetOperands(MCInst &Inst, unsigned N) const {
1653 addMemImm8OffsetOperands(Inst, N);
1656 void addMemNegImm8OffsetOperands(MCInst &Inst, unsigned N) const {
1657 addMemImm8OffsetOperands(Inst, N);
1660 void addMemUImm12OffsetOperands(MCInst &Inst, unsigned N) const {
1661 assert(N == 2 && "Invalid number of operands!");
1662 // If this is an immediate, it's a label reference.
1664 addExpr(Inst, getImm());
1665 Inst.addOperand(MCOperand::CreateImm(0));
1669 // Otherwise, it's a normal memory reg+offset.
1670 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1671 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1672 Inst.addOperand(MCOperand::CreateImm(Val));
1675 void addMemImm12OffsetOperands(MCInst &Inst, unsigned N) const {
1676 assert(N == 2 && "Invalid number of operands!");
1677 // If this is an immediate, it's a label reference.
1679 addExpr(Inst, getImm());
1680 Inst.addOperand(MCOperand::CreateImm(0));
1684 // Otherwise, it's a normal memory reg+offset.
1685 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1686 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1687 Inst.addOperand(MCOperand::CreateImm(Val));
1690 void addMemTBBOperands(MCInst &Inst, unsigned N) const {
1691 assert(N == 2 && "Invalid number of operands!");
1692 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1693 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1696 void addMemTBHOperands(MCInst &Inst, unsigned N) const {
1697 assert(N == 2 && "Invalid number of operands!");
1698 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1699 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1702 void addMemRegOffsetOperands(MCInst &Inst, unsigned N) const {
1703 assert(N == 3 && "Invalid number of operands!");
1705 ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add,
1706 Memory.ShiftImm, Memory.ShiftType);
1707 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1708 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1709 Inst.addOperand(MCOperand::CreateImm(Val));
1712 void addT2MemRegOffsetOperands(MCInst &Inst, unsigned N) const {
1713 assert(N == 3 && "Invalid number of operands!");
1714 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1715 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1716 Inst.addOperand(MCOperand::CreateImm(Memory.ShiftImm));
1719 void addMemThumbRROperands(MCInst &Inst, unsigned N) const {
1720 assert(N == 2 && "Invalid number of operands!");
1721 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1722 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1725 void addMemThumbRIs4Operands(MCInst &Inst, unsigned N) const {
1726 assert(N == 2 && "Invalid number of operands!");
1727 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0;
1728 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1729 Inst.addOperand(MCOperand::CreateImm(Val));
1732 void addMemThumbRIs2Operands(MCInst &Inst, unsigned N) const {
1733 assert(N == 2 && "Invalid number of operands!");
1734 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 2) : 0;
1735 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1736 Inst.addOperand(MCOperand::CreateImm(Val));
1739 void addMemThumbRIs1Operands(MCInst &Inst, unsigned N) const {
1740 assert(N == 2 && "Invalid number of operands!");
1741 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue()) : 0;
1742 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1743 Inst.addOperand(MCOperand::CreateImm(Val));
1746 void addMemThumbSPIOperands(MCInst &Inst, unsigned N) const {
1747 assert(N == 2 && "Invalid number of operands!");
1748 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0;
1749 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1750 Inst.addOperand(MCOperand::CreateImm(Val));
1753 void addPostIdxImm8Operands(MCInst &Inst, unsigned N) const {
1754 assert(N == 1 && "Invalid number of operands!");
1755 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1756 assert(CE && "non-constant post-idx-imm8 operand!");
1757 int Imm = CE->getValue();
1758 bool isAdd = Imm >= 0;
1759 if (Imm == INT32_MIN) Imm = 0;
1760 Imm = (Imm < 0 ? -Imm : Imm) | (int)isAdd << 8;
1761 Inst.addOperand(MCOperand::CreateImm(Imm));
1764 void addPostIdxImm8s4Operands(MCInst &Inst, unsigned N) const {
1765 assert(N == 1 && "Invalid number of operands!");
1766 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1767 assert(CE && "non-constant post-idx-imm8s4 operand!");
1768 int Imm = CE->getValue();
1769 bool isAdd = Imm >= 0;
1770 if (Imm == INT32_MIN) Imm = 0;
1771 // Immediate is scaled by 4.
1772 Imm = ((Imm < 0 ? -Imm : Imm) / 4) | (int)isAdd << 8;
1773 Inst.addOperand(MCOperand::CreateImm(Imm));
1776 void addPostIdxRegOperands(MCInst &Inst, unsigned N) const {
1777 assert(N == 2 && "Invalid number of operands!");
1778 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
1779 Inst.addOperand(MCOperand::CreateImm(PostIdxReg.isAdd));
1782 void addPostIdxRegShiftedOperands(MCInst &Inst, unsigned N) const {
1783 assert(N == 2 && "Invalid number of operands!");
1784 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
1785 // The sign, shift type, and shift amount are encoded in a single operand
1786 // using the AM2 encoding helpers.
1787 ARM_AM::AddrOpc opc = PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub;
1788 unsigned Imm = ARM_AM::getAM2Opc(opc, PostIdxReg.ShiftImm,
1789 PostIdxReg.ShiftTy);
1790 Inst.addOperand(MCOperand::CreateImm(Imm));
1793 void addMSRMaskOperands(MCInst &Inst, unsigned N) const {
1794 assert(N == 1 && "Invalid number of operands!");
1795 Inst.addOperand(MCOperand::CreateImm(unsigned(getMSRMask())));
1798 void addProcIFlagsOperands(MCInst &Inst, unsigned N) const {
1799 assert(N == 1 && "Invalid number of operands!");
1800 Inst.addOperand(MCOperand::CreateImm(unsigned(getProcIFlags())));
1803 void addVecListOperands(MCInst &Inst, unsigned N) const {
1804 assert(N == 1 && "Invalid number of operands!");
1805 Inst.addOperand(MCOperand::CreateReg(VectorList.RegNum));
1808 void addVecListIndexedOperands(MCInst &Inst, unsigned N) const {
1809 assert(N == 2 && "Invalid number of operands!");
1810 Inst.addOperand(MCOperand::CreateReg(VectorList.RegNum));
1811 Inst.addOperand(MCOperand::CreateImm(VectorList.LaneIndex));
1814 void addVectorIndex8Operands(MCInst &Inst, unsigned N) const {
1815 assert(N == 1 && "Invalid number of operands!");
1816 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
1819 void addVectorIndex16Operands(MCInst &Inst, unsigned N) const {
1820 assert(N == 1 && "Invalid number of operands!");
1821 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
1824 void addVectorIndex32Operands(MCInst &Inst, unsigned N) const {
1825 assert(N == 1 && "Invalid number of operands!");
1826 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
1829 void addNEONi8splatOperands(MCInst &Inst, unsigned N) const {
1830 assert(N == 1 && "Invalid number of operands!");
1831 // The immediate encodes the type of constant as well as the value.
1832 // Mask in that this is an i8 splat.
1833 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1834 Inst.addOperand(MCOperand::CreateImm(CE->getValue() | 0xe00));
1837 void addNEONi16splatOperands(MCInst &Inst, unsigned N) const {
1838 assert(N == 1 && "Invalid number of operands!");
1839 // The immediate encodes the type of constant as well as the value.
1840 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1841 unsigned Value = CE->getValue();
1843 Value = (Value >> 8) | 0xa00;
1846 Inst.addOperand(MCOperand::CreateImm(Value));
1849 void addNEONi32splatOperands(MCInst &Inst, unsigned N) const {
1850 assert(N == 1 && "Invalid number of operands!");
1851 // The immediate encodes the type of constant as well as the value.
1852 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1853 unsigned Value = CE->getValue();
1854 if (Value >= 256 && Value <= 0xff00)
1855 Value = (Value >> 8) | 0x200;
1856 else if (Value > 0xffff && Value <= 0xff0000)
1857 Value = (Value >> 16) | 0x400;
1858 else if (Value > 0xffffff)
1859 Value = (Value >> 24) | 0x600;
1860 Inst.addOperand(MCOperand::CreateImm(Value));
1863 void addNEONi32vmovOperands(MCInst &Inst, unsigned N) const {
1864 assert(N == 1 && "Invalid number of operands!");
1865 // The immediate encodes the type of constant as well as the value.
1866 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1867 unsigned Value = CE->getValue();
1868 if (Value >= 256 && Value <= 0xffff)
1869 Value = (Value >> 8) | ((Value & 0xff) ? 0xc00 : 0x200);
1870 else if (Value > 0xffff && Value <= 0xffffff)
1871 Value = (Value >> 16) | ((Value & 0xff) ? 0xd00 : 0x400);
1872 else if (Value > 0xffffff)
1873 Value = (Value >> 24) | 0x600;
1874 Inst.addOperand(MCOperand::CreateImm(Value));
1877 void addNEONi32vmovNegOperands(MCInst &Inst, unsigned N) const {
1878 assert(N == 1 && "Invalid number of operands!");
1879 // The immediate encodes the type of constant as well as the value.
1880 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1881 unsigned Value = ~CE->getValue();
1882 if (Value >= 256 && Value <= 0xffff)
1883 Value = (Value >> 8) | ((Value & 0xff) ? 0xc00 : 0x200);
1884 else if (Value > 0xffff && Value <= 0xffffff)
1885 Value = (Value >> 16) | ((Value & 0xff) ? 0xd00 : 0x400);
1886 else if (Value > 0xffffff)
1887 Value = (Value >> 24) | 0x600;
1888 Inst.addOperand(MCOperand::CreateImm(Value));
1891 void addNEONi64splatOperands(MCInst &Inst, unsigned N) const {
1892 assert(N == 1 && "Invalid number of operands!");
1893 // The immediate encodes the type of constant as well as the value.
1894 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1895 uint64_t Value = CE->getValue();
1897 for (unsigned i = 0; i < 8; ++i, Value >>= 8) {
1898 Imm |= (Value & 1) << i;
1900 Inst.addOperand(MCOperand::CreateImm(Imm | 0x1e00));
1903 virtual void print(raw_ostream &OS) const;
1905 static ARMOperand *CreateITMask(unsigned Mask, SMLoc S) {
1906 ARMOperand *Op = new ARMOperand(k_ITCondMask);
1907 Op->ITMask.Mask = Mask;
1913 static ARMOperand *CreateCondCode(ARMCC::CondCodes CC, SMLoc S) {
1914 ARMOperand *Op = new ARMOperand(k_CondCode);
1921 static ARMOperand *CreateCoprocNum(unsigned CopVal, SMLoc S) {
1922 ARMOperand *Op = new ARMOperand(k_CoprocNum);
1923 Op->Cop.Val = CopVal;
1929 static ARMOperand *CreateCoprocReg(unsigned CopVal, SMLoc S) {
1930 ARMOperand *Op = new ARMOperand(k_CoprocReg);
1931 Op->Cop.Val = CopVal;
1937 static ARMOperand *CreateCoprocOption(unsigned Val, SMLoc S, SMLoc E) {
1938 ARMOperand *Op = new ARMOperand(k_CoprocOption);
1945 static ARMOperand *CreateCCOut(unsigned RegNum, SMLoc S) {
1946 ARMOperand *Op = new ARMOperand(k_CCOut);
1947 Op->Reg.RegNum = RegNum;
1953 static ARMOperand *CreateToken(StringRef Str, SMLoc S) {
1954 ARMOperand *Op = new ARMOperand(k_Token);
1955 Op->Tok.Data = Str.data();
1956 Op->Tok.Length = Str.size();
1962 static ARMOperand *CreateReg(unsigned RegNum, SMLoc S, SMLoc E) {
1963 ARMOperand *Op = new ARMOperand(k_Register);
1964 Op->Reg.RegNum = RegNum;
1970 static ARMOperand *CreateShiftedRegister(ARM_AM::ShiftOpc ShTy,
1975 ARMOperand *Op = new ARMOperand(k_ShiftedRegister);
1976 Op->RegShiftedReg.ShiftTy = ShTy;
1977 Op->RegShiftedReg.SrcReg = SrcReg;
1978 Op->RegShiftedReg.ShiftReg = ShiftReg;
1979 Op->RegShiftedReg.ShiftImm = ShiftImm;
1985 static ARMOperand *CreateShiftedImmediate(ARM_AM::ShiftOpc ShTy,
1989 ARMOperand *Op = new ARMOperand(k_ShiftedImmediate);
1990 Op->RegShiftedImm.ShiftTy = ShTy;
1991 Op->RegShiftedImm.SrcReg = SrcReg;
1992 Op->RegShiftedImm.ShiftImm = ShiftImm;
1998 static ARMOperand *CreateShifterImm(bool isASR, unsigned Imm,
2000 ARMOperand *Op = new ARMOperand(k_ShifterImmediate);
2001 Op->ShifterImm.isASR = isASR;
2002 Op->ShifterImm.Imm = Imm;
2008 static ARMOperand *CreateRotImm(unsigned Imm, SMLoc S, SMLoc E) {
2009 ARMOperand *Op = new ARMOperand(k_RotateImmediate);
2010 Op->RotImm.Imm = Imm;
2016 static ARMOperand *CreateBitfield(unsigned LSB, unsigned Width,
2018 ARMOperand *Op = new ARMOperand(k_BitfieldDescriptor);
2019 Op->Bitfield.LSB = LSB;
2020 Op->Bitfield.Width = Width;
2027 CreateRegList(const SmallVectorImpl<std::pair<unsigned, SMLoc> > &Regs,
2028 SMLoc StartLoc, SMLoc EndLoc) {
2029 KindTy Kind = k_RegisterList;
2031 if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Regs.front().first))
2032 Kind = k_DPRRegisterList;
2033 else if (ARMMCRegisterClasses[ARM::SPRRegClassID].
2034 contains(Regs.front().first))
2035 Kind = k_SPRRegisterList;
2037 ARMOperand *Op = new ARMOperand(Kind);
2038 for (SmallVectorImpl<std::pair<unsigned, SMLoc> >::const_iterator
2039 I = Regs.begin(), E = Regs.end(); I != E; ++I)
2040 Op->Registers.push_back(I->first);
2041 array_pod_sort(Op->Registers.begin(), Op->Registers.end());
2042 Op->StartLoc = StartLoc;
2043 Op->EndLoc = EndLoc;
2047 static ARMOperand *CreateVectorList(unsigned RegNum, unsigned Count,
2048 bool isDoubleSpaced, SMLoc S, SMLoc E) {
2049 ARMOperand *Op = new ARMOperand(k_VectorList);
2050 Op->VectorList.RegNum = RegNum;
2051 Op->VectorList.Count = Count;
2052 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2058 static ARMOperand *CreateVectorListAllLanes(unsigned RegNum, unsigned Count,
2059 bool isDoubleSpaced,
2061 ARMOperand *Op = new ARMOperand(k_VectorListAllLanes);
2062 Op->VectorList.RegNum = RegNum;
2063 Op->VectorList.Count = Count;
2064 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2070 static ARMOperand *CreateVectorListIndexed(unsigned RegNum, unsigned Count,
2072 bool isDoubleSpaced,
2074 ARMOperand *Op = new ARMOperand(k_VectorListIndexed);
2075 Op->VectorList.RegNum = RegNum;
2076 Op->VectorList.Count = Count;
2077 Op->VectorList.LaneIndex = Index;
2078 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2084 static ARMOperand *CreateVectorIndex(unsigned Idx, SMLoc S, SMLoc E,
2086 ARMOperand *Op = new ARMOperand(k_VectorIndex);
2087 Op->VectorIndex.Val = Idx;
2093 static ARMOperand *CreateImm(const MCExpr *Val, SMLoc S, SMLoc E) {
2094 ARMOperand *Op = new ARMOperand(k_Immediate);
2101 static ARMOperand *CreateFPImm(unsigned Val, SMLoc S, MCContext &Ctx) {
2102 ARMOperand *Op = new ARMOperand(k_FPImmediate);
2103 Op->FPImm.Val = Val;
2109 static ARMOperand *CreateMem(unsigned BaseRegNum,
2110 const MCConstantExpr *OffsetImm,
2111 unsigned OffsetRegNum,
2112 ARM_AM::ShiftOpc ShiftType,
2117 ARMOperand *Op = new ARMOperand(k_Memory);
2118 Op->Memory.BaseRegNum = BaseRegNum;
2119 Op->Memory.OffsetImm = OffsetImm;
2120 Op->Memory.OffsetRegNum = OffsetRegNum;
2121 Op->Memory.ShiftType = ShiftType;
2122 Op->Memory.ShiftImm = ShiftImm;
2123 Op->Memory.Alignment = Alignment;
2124 Op->Memory.isNegative = isNegative;
2130 static ARMOperand *CreatePostIdxReg(unsigned RegNum, bool isAdd,
2131 ARM_AM::ShiftOpc ShiftTy,
2134 ARMOperand *Op = new ARMOperand(k_PostIndexRegister);
2135 Op->PostIdxReg.RegNum = RegNum;
2136 Op->PostIdxReg.isAdd = isAdd;
2137 Op->PostIdxReg.ShiftTy = ShiftTy;
2138 Op->PostIdxReg.ShiftImm = ShiftImm;
2144 static ARMOperand *CreateMemBarrierOpt(ARM_MB::MemBOpt Opt, SMLoc S) {
2145 ARMOperand *Op = new ARMOperand(k_MemBarrierOpt);
2146 Op->MBOpt.Val = Opt;
2152 static ARMOperand *CreateProcIFlags(ARM_PROC::IFlags IFlags, SMLoc S) {
2153 ARMOperand *Op = new ARMOperand(k_ProcIFlags);
2154 Op->IFlags.Val = IFlags;
2160 static ARMOperand *CreateMSRMask(unsigned MMask, SMLoc S) {
2161 ARMOperand *Op = new ARMOperand(k_MSRMask);
2162 Op->MMask.Val = MMask;
2169 } // end anonymous namespace.
2171 void ARMOperand::print(raw_ostream &OS) const {
2174 OS << "<fpimm " << getFPImm() << "(" << ARM_AM::getFPImmFloat(getFPImm())
2178 OS << "<ARMCC::" << ARMCondCodeToString(getCondCode()) << ">";
2181 OS << "<ccout " << getReg() << ">";
2183 case k_ITCondMask: {
2184 static const char *MaskStr[] = {
2185 "()", "(t)", "(e)", "(tt)", "(et)", "(te)", "(ee)", "(ttt)", "(ett)",
2186 "(tet)", "(eet)", "(tte)", "(ete)", "(tee)", "(eee)"
2188 assert((ITMask.Mask & 0xf) == ITMask.Mask);
2189 OS << "<it-mask " << MaskStr[ITMask.Mask] << ">";
2193 OS << "<coprocessor number: " << getCoproc() << ">";
2196 OS << "<coprocessor register: " << getCoproc() << ">";
2198 case k_CoprocOption:
2199 OS << "<coprocessor option: " << CoprocOption.Val << ">";
2202 OS << "<mask: " << getMSRMask() << ">";
2205 getImm()->print(OS);
2207 case k_MemBarrierOpt:
2208 OS << "<ARM_MB::" << MemBOptToString(getMemBarrierOpt()) << ">";
2212 << " base:" << Memory.BaseRegNum;
2215 case k_PostIndexRegister:
2216 OS << "post-idx register " << (PostIdxReg.isAdd ? "" : "-")
2217 << PostIdxReg.RegNum;
2218 if (PostIdxReg.ShiftTy != ARM_AM::no_shift)
2219 OS << ARM_AM::getShiftOpcStr(PostIdxReg.ShiftTy) << " "
2220 << PostIdxReg.ShiftImm;
2223 case k_ProcIFlags: {
2224 OS << "<ARM_PROC::";
2225 unsigned IFlags = getProcIFlags();
2226 for (int i=2; i >= 0; --i)
2227 if (IFlags & (1 << i))
2228 OS << ARM_PROC::IFlagsToString(1 << i);
2233 OS << "<register " << getReg() << ">";
2235 case k_ShifterImmediate:
2236 OS << "<shift " << (ShifterImm.isASR ? "asr" : "lsl")
2237 << " #" << ShifterImm.Imm << ">";
2239 case k_ShiftedRegister:
2240 OS << "<so_reg_reg "
2241 << RegShiftedReg.SrcReg << " "
2242 << ARM_AM::getShiftOpcStr(RegShiftedReg.ShiftTy)
2243 << " " << RegShiftedReg.ShiftReg << ">";
2245 case k_ShiftedImmediate:
2246 OS << "<so_reg_imm "
2247 << RegShiftedImm.SrcReg << " "
2248 << ARM_AM::getShiftOpcStr(RegShiftedImm.ShiftTy)
2249 << " #" << RegShiftedImm.ShiftImm << ">";
2251 case k_RotateImmediate:
2252 OS << "<ror " << " #" << (RotImm.Imm * 8) << ">";
2254 case k_BitfieldDescriptor:
2255 OS << "<bitfield " << "lsb: " << Bitfield.LSB
2256 << ", width: " << Bitfield.Width << ">";
2258 case k_RegisterList:
2259 case k_DPRRegisterList:
2260 case k_SPRRegisterList: {
2261 OS << "<register_list ";
2263 const SmallVectorImpl<unsigned> &RegList = getRegList();
2264 for (SmallVectorImpl<unsigned>::const_iterator
2265 I = RegList.begin(), E = RegList.end(); I != E; ) {
2267 if (++I < E) OS << ", ";
2274 OS << "<vector_list " << VectorList.Count << " * "
2275 << VectorList.RegNum << ">";
2277 case k_VectorListAllLanes:
2278 OS << "<vector_list(all lanes) " << VectorList.Count << " * "
2279 << VectorList.RegNum << ">";
2281 case k_VectorListIndexed:
2282 OS << "<vector_list(lane " << VectorList.LaneIndex << ") "
2283 << VectorList.Count << " * " << VectorList.RegNum << ">";
2286 OS << "'" << getToken() << "'";
2289 OS << "<vectorindex " << getVectorIndex() << ">";
2294 /// @name Auto-generated Match Functions
2297 static unsigned MatchRegisterName(StringRef Name);
2301 bool ARMAsmParser::ParseRegister(unsigned &RegNo,
2302 SMLoc &StartLoc, SMLoc &EndLoc) {
2303 StartLoc = Parser.getTok().getLoc();
2304 RegNo = tryParseRegister();
2305 EndLoc = Parser.getTok().getLoc();
2307 return (RegNo == (unsigned)-1);
2310 /// Try to parse a register name. The token must be an Identifier when called,
2311 /// and if it is a register name the token is eaten and the register number is
2312 /// returned. Otherwise return -1.
2314 int ARMAsmParser::tryParseRegister() {
2315 const AsmToken &Tok = Parser.getTok();
2316 if (Tok.isNot(AsmToken::Identifier)) return -1;
2318 std::string lowerCase = Tok.getString().lower();
2319 unsigned RegNum = MatchRegisterName(lowerCase);
2321 RegNum = StringSwitch<unsigned>(lowerCase)
2322 .Case("r13", ARM::SP)
2323 .Case("r14", ARM::LR)
2324 .Case("r15", ARM::PC)
2325 .Case("ip", ARM::R12)
2326 // Additional register name aliases for 'gas' compatibility.
2327 .Case("a1", ARM::R0)
2328 .Case("a2", ARM::R1)
2329 .Case("a3", ARM::R2)
2330 .Case("a4", ARM::R3)
2331 .Case("v1", ARM::R4)
2332 .Case("v2", ARM::R5)
2333 .Case("v3", ARM::R6)
2334 .Case("v4", ARM::R7)
2335 .Case("v5", ARM::R8)
2336 .Case("v6", ARM::R9)
2337 .Case("v7", ARM::R10)
2338 .Case("v8", ARM::R11)
2339 .Case("sb", ARM::R9)
2340 .Case("sl", ARM::R10)
2341 .Case("fp", ARM::R11)
2345 // Check for aliases registered via .req. Canonicalize to lower case.
2346 // That's more consistent since register names are case insensitive, and
2347 // it's how the original entry was passed in from MC/MCParser/AsmParser.
2348 StringMap<unsigned>::const_iterator Entry = RegisterReqs.find(lowerCase);
2349 // If no match, return failure.
2350 if (Entry == RegisterReqs.end())
2352 Parser.Lex(); // Eat identifier token.
2353 return Entry->getValue();
2356 Parser.Lex(); // Eat identifier token.
2361 // Try to parse a shifter (e.g., "lsl <amt>"). On success, return 0.
2362 // If a recoverable error occurs, return 1. If an irrecoverable error
2363 // occurs, return -1. An irrecoverable error is one where tokens have been
2364 // consumed in the process of trying to parse the shifter (i.e., when it is
2365 // indeed a shifter operand, but malformed).
2366 int ARMAsmParser::tryParseShiftRegister(
2367 SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2368 SMLoc S = Parser.getTok().getLoc();
2369 const AsmToken &Tok = Parser.getTok();
2370 assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
2372 std::string lowerCase = Tok.getString().lower();
2373 ARM_AM::ShiftOpc ShiftTy = StringSwitch<ARM_AM::ShiftOpc>(lowerCase)
2374 .Case("asl", ARM_AM::lsl)
2375 .Case("lsl", ARM_AM::lsl)
2376 .Case("lsr", ARM_AM::lsr)
2377 .Case("asr", ARM_AM::asr)
2378 .Case("ror", ARM_AM::ror)
2379 .Case("rrx", ARM_AM::rrx)
2380 .Default(ARM_AM::no_shift);
2382 if (ShiftTy == ARM_AM::no_shift)
2385 Parser.Lex(); // Eat the operator.
2387 // The source register for the shift has already been added to the
2388 // operand list, so we need to pop it off and combine it into the shifted
2389 // register operand instead.
2390 OwningPtr<ARMOperand> PrevOp((ARMOperand*)Operands.pop_back_val());
2391 if (!PrevOp->isReg())
2392 return Error(PrevOp->getStartLoc(), "shift must be of a register");
2393 int SrcReg = PrevOp->getReg();
2396 if (ShiftTy == ARM_AM::rrx) {
2397 // RRX Doesn't have an explicit shift amount. The encoder expects
2398 // the shift register to be the same as the source register. Seems odd,
2402 // Figure out if this is shifted by a constant or a register (for non-RRX).
2403 if (Parser.getTok().is(AsmToken::Hash) ||
2404 Parser.getTok().is(AsmToken::Dollar)) {
2405 Parser.Lex(); // Eat hash.
2406 SMLoc ImmLoc = Parser.getTok().getLoc();
2407 const MCExpr *ShiftExpr = 0;
2408 if (getParser().ParseExpression(ShiftExpr)) {
2409 Error(ImmLoc, "invalid immediate shift value");
2412 // The expression must be evaluatable as an immediate.
2413 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftExpr);
2415 Error(ImmLoc, "invalid immediate shift value");
2418 // Range check the immediate.
2419 // lsl, ror: 0 <= imm <= 31
2420 // lsr, asr: 0 <= imm <= 32
2421 Imm = CE->getValue();
2423 ((ShiftTy == ARM_AM::lsl || ShiftTy == ARM_AM::ror) && Imm > 31) ||
2424 ((ShiftTy == ARM_AM::lsr || ShiftTy == ARM_AM::asr) && Imm > 32)) {
2425 Error(ImmLoc, "immediate shift value out of range");
2428 // shift by zero is a nop. Always send it through as lsl.
2429 // ('as' compatibility)
2431 ShiftTy = ARM_AM::lsl;
2432 } else if (Parser.getTok().is(AsmToken::Identifier)) {
2433 ShiftReg = tryParseRegister();
2434 SMLoc L = Parser.getTok().getLoc();
2435 if (ShiftReg == -1) {
2436 Error (L, "expected immediate or register in shift operand");
2440 Error (Parser.getTok().getLoc(),
2441 "expected immediate or register in shift operand");
2446 if (ShiftReg && ShiftTy != ARM_AM::rrx)
2447 Operands.push_back(ARMOperand::CreateShiftedRegister(ShiftTy, SrcReg,
2449 S, Parser.getTok().getLoc()));
2451 Operands.push_back(ARMOperand::CreateShiftedImmediate(ShiftTy, SrcReg, Imm,
2452 S, Parser.getTok().getLoc()));
2458 /// Try to parse a register name. The token must be an Identifier when called.
2459 /// If it's a register, an AsmOperand is created. Another AsmOperand is created
2460 /// if there is a "writeback". 'true' if it's not a register.
2462 /// TODO this is likely to change to allow different register types and or to
2463 /// parse for a specific register type.
2465 tryParseRegisterWithWriteBack(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2466 SMLoc S = Parser.getTok().getLoc();
2467 int RegNo = tryParseRegister();
2471 Operands.push_back(ARMOperand::CreateReg(RegNo, S, Parser.getTok().getLoc()));
2473 const AsmToken &ExclaimTok = Parser.getTok();
2474 if (ExclaimTok.is(AsmToken::Exclaim)) {
2475 Operands.push_back(ARMOperand::CreateToken(ExclaimTok.getString(),
2476 ExclaimTok.getLoc()));
2477 Parser.Lex(); // Eat exclaim token
2481 // Also check for an index operand. This is only legal for vector registers,
2482 // but that'll get caught OK in operand matching, so we don't need to
2483 // explicitly filter everything else out here.
2484 if (Parser.getTok().is(AsmToken::LBrac)) {
2485 SMLoc SIdx = Parser.getTok().getLoc();
2486 Parser.Lex(); // Eat left bracket token.
2488 const MCExpr *ImmVal;
2489 if (getParser().ParseExpression(ImmVal))
2490 return MatchOperand_ParseFail;
2491 const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal);
2493 TokError("immediate value expected for vector index");
2494 return MatchOperand_ParseFail;
2497 SMLoc E = Parser.getTok().getLoc();
2498 if (Parser.getTok().isNot(AsmToken::RBrac)) {
2499 Error(E, "']' expected");
2500 return MatchOperand_ParseFail;
2503 Parser.Lex(); // Eat right bracket token.
2505 Operands.push_back(ARMOperand::CreateVectorIndex(MCE->getValue(),
2513 /// MatchCoprocessorOperandName - Try to parse an coprocessor related
2514 /// instruction with a symbolic operand name. Example: "p1", "p7", "c3",
2516 static int MatchCoprocessorOperandName(StringRef Name, char CoprocOp) {
2517 // Use the same layout as the tablegen'erated register name matcher. Ugly,
2519 switch (Name.size()) {
2522 if (Name[0] != CoprocOp)
2539 if (Name[0] != CoprocOp || Name[1] != '1')
2543 case '0': return 10;
2544 case '1': return 11;
2545 case '2': return 12;
2546 case '3': return 13;
2547 case '4': return 14;
2548 case '5': return 15;
2556 /// parseITCondCode - Try to parse a condition code for an IT instruction.
2557 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2558 parseITCondCode(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2559 SMLoc S = Parser.getTok().getLoc();
2560 const AsmToken &Tok = Parser.getTok();
2561 if (!Tok.is(AsmToken::Identifier))
2562 return MatchOperand_NoMatch;
2563 unsigned CC = StringSwitch<unsigned>(Tok.getString())
2564 .Case("eq", ARMCC::EQ)
2565 .Case("ne", ARMCC::NE)
2566 .Case("hs", ARMCC::HS)
2567 .Case("cs", ARMCC::HS)
2568 .Case("lo", ARMCC::LO)
2569 .Case("cc", ARMCC::LO)
2570 .Case("mi", ARMCC::MI)
2571 .Case("pl", ARMCC::PL)
2572 .Case("vs", ARMCC::VS)
2573 .Case("vc", ARMCC::VC)
2574 .Case("hi", ARMCC::HI)
2575 .Case("ls", ARMCC::LS)
2576 .Case("ge", ARMCC::GE)
2577 .Case("lt", ARMCC::LT)
2578 .Case("gt", ARMCC::GT)
2579 .Case("le", ARMCC::LE)
2580 .Case("al", ARMCC::AL)
2583 return MatchOperand_NoMatch;
2584 Parser.Lex(); // Eat the token.
2586 Operands.push_back(ARMOperand::CreateCondCode(ARMCC::CondCodes(CC), S));
2588 return MatchOperand_Success;
2591 /// parseCoprocNumOperand - Try to parse an coprocessor number operand. The
2592 /// token must be an Identifier when called, and if it is a coprocessor
2593 /// number, the token is eaten and the operand is added to the operand list.
2594 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2595 parseCoprocNumOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2596 SMLoc S = Parser.getTok().getLoc();
2597 const AsmToken &Tok = Parser.getTok();
2598 if (Tok.isNot(AsmToken::Identifier))
2599 return MatchOperand_NoMatch;
2601 int Num = MatchCoprocessorOperandName(Tok.getString(), 'p');
2603 return MatchOperand_NoMatch;
2605 Parser.Lex(); // Eat identifier token.
2606 Operands.push_back(ARMOperand::CreateCoprocNum(Num, S));
2607 return MatchOperand_Success;
2610 /// parseCoprocRegOperand - Try to parse an coprocessor register operand. The
2611 /// token must be an Identifier when called, and if it is a coprocessor
2612 /// number, the token is eaten and the operand is added to the operand list.
2613 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2614 parseCoprocRegOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2615 SMLoc S = Parser.getTok().getLoc();
2616 const AsmToken &Tok = Parser.getTok();
2617 if (Tok.isNot(AsmToken::Identifier))
2618 return MatchOperand_NoMatch;
2620 int Reg = MatchCoprocessorOperandName(Tok.getString(), 'c');
2622 return MatchOperand_NoMatch;
2624 Parser.Lex(); // Eat identifier token.
2625 Operands.push_back(ARMOperand::CreateCoprocReg(Reg, S));
2626 return MatchOperand_Success;
2629 /// parseCoprocOptionOperand - Try to parse an coprocessor option operand.
2630 /// coproc_option : '{' imm0_255 '}'
2631 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2632 parseCoprocOptionOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2633 SMLoc S = Parser.getTok().getLoc();
2635 // If this isn't a '{', this isn't a coprocessor immediate operand.
2636 if (Parser.getTok().isNot(AsmToken::LCurly))
2637 return MatchOperand_NoMatch;
2638 Parser.Lex(); // Eat the '{'
2641 SMLoc Loc = Parser.getTok().getLoc();
2642 if (getParser().ParseExpression(Expr)) {
2643 Error(Loc, "illegal expression");
2644 return MatchOperand_ParseFail;
2646 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
2647 if (!CE || CE->getValue() < 0 || CE->getValue() > 255) {
2648 Error(Loc, "coprocessor option must be an immediate in range [0, 255]");
2649 return MatchOperand_ParseFail;
2651 int Val = CE->getValue();
2653 // Check for and consume the closing '}'
2654 if (Parser.getTok().isNot(AsmToken::RCurly))
2655 return MatchOperand_ParseFail;
2656 SMLoc E = Parser.getTok().getLoc();
2657 Parser.Lex(); // Eat the '}'
2659 Operands.push_back(ARMOperand::CreateCoprocOption(Val, S, E));
2660 return MatchOperand_Success;
2663 // For register list parsing, we need to map from raw GPR register numbering
2664 // to the enumeration values. The enumeration values aren't sorted by
2665 // register number due to our using "sp", "lr" and "pc" as canonical names.
2666 static unsigned getNextRegister(unsigned Reg) {
2667 // If this is a GPR, we need to do it manually, otherwise we can rely
2668 // on the sort ordering of the enumeration since the other reg-classes
2670 if (!ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
2673 default: assert(0 && "Invalid GPR number!");
2674 case ARM::R0: return ARM::R1; case ARM::R1: return ARM::R2;
2675 case ARM::R2: return ARM::R3; case ARM::R3: return ARM::R4;
2676 case ARM::R4: return ARM::R5; case ARM::R5: return ARM::R6;
2677 case ARM::R6: return ARM::R7; case ARM::R7: return ARM::R8;
2678 case ARM::R8: return ARM::R9; case ARM::R9: return ARM::R10;
2679 case ARM::R10: return ARM::R11; case ARM::R11: return ARM::R12;
2680 case ARM::R12: return ARM::SP; case ARM::SP: return ARM::LR;
2681 case ARM::LR: return ARM::PC; case ARM::PC: return ARM::R0;
2685 // Return the low-subreg of a given Q register.
2686 static unsigned getDRegFromQReg(unsigned QReg) {
2688 default: llvm_unreachable("expected a Q register!");
2689 case ARM::Q0: return ARM::D0;
2690 case ARM::Q1: return ARM::D2;
2691 case ARM::Q2: return ARM::D4;
2692 case ARM::Q3: return ARM::D6;
2693 case ARM::Q4: return ARM::D8;
2694 case ARM::Q5: return ARM::D10;
2695 case ARM::Q6: return ARM::D12;
2696 case ARM::Q7: return ARM::D14;
2697 case ARM::Q8: return ARM::D16;
2698 case ARM::Q9: return ARM::D18;
2699 case ARM::Q10: return ARM::D20;
2700 case ARM::Q11: return ARM::D22;
2701 case ARM::Q12: return ARM::D24;
2702 case ARM::Q13: return ARM::D26;
2703 case ARM::Q14: return ARM::D28;
2704 case ARM::Q15: return ARM::D30;
2708 /// Parse a register list.
2710 parseRegisterList(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2711 assert(Parser.getTok().is(AsmToken::LCurly) &&
2712 "Token is not a Left Curly Brace");
2713 SMLoc S = Parser.getTok().getLoc();
2714 Parser.Lex(); // Eat '{' token.
2715 SMLoc RegLoc = Parser.getTok().getLoc();
2717 // Check the first register in the list to see what register class
2718 // this is a list of.
2719 int Reg = tryParseRegister();
2721 return Error(RegLoc, "register expected");
2723 // The reglist instructions have at most 16 registers, so reserve
2724 // space for that many.
2725 SmallVector<std::pair<unsigned, SMLoc>, 16> Registers;
2727 // Allow Q regs and just interpret them as the two D sub-registers.
2728 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2729 Reg = getDRegFromQReg(Reg);
2730 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2733 const MCRegisterClass *RC;
2734 if (ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
2735 RC = &ARMMCRegisterClasses[ARM::GPRRegClassID];
2736 else if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg))
2737 RC = &ARMMCRegisterClasses[ARM::DPRRegClassID];
2738 else if (ARMMCRegisterClasses[ARM::SPRRegClassID].contains(Reg))
2739 RC = &ARMMCRegisterClasses[ARM::SPRRegClassID];
2741 return Error(RegLoc, "invalid register in register list");
2743 // Store the register.
2744 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2746 // This starts immediately after the first register token in the list,
2747 // so we can see either a comma or a minus (range separator) as a legal
2749 while (Parser.getTok().is(AsmToken::Comma) ||
2750 Parser.getTok().is(AsmToken::Minus)) {
2751 if (Parser.getTok().is(AsmToken::Minus)) {
2752 Parser.Lex(); // Eat the minus.
2753 SMLoc EndLoc = Parser.getTok().getLoc();
2754 int EndReg = tryParseRegister();
2756 return Error(EndLoc, "register expected");
2757 // Allow Q regs and just interpret them as the two D sub-registers.
2758 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(EndReg))
2759 EndReg = getDRegFromQReg(EndReg) + 1;
2760 // If the register is the same as the start reg, there's nothing
2764 // The register must be in the same register class as the first.
2765 if (!RC->contains(EndReg))
2766 return Error(EndLoc, "invalid register in register list");
2767 // Ranges must go from low to high.
2768 if (getARMRegisterNumbering(Reg) > getARMRegisterNumbering(EndReg))
2769 return Error(EndLoc, "bad range in register list");
2771 // Add all the registers in the range to the register list.
2772 while (Reg != EndReg) {
2773 Reg = getNextRegister(Reg);
2774 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2778 Parser.Lex(); // Eat the comma.
2779 RegLoc = Parser.getTok().getLoc();
2781 const AsmToken RegTok = Parser.getTok();
2782 Reg = tryParseRegister();
2784 return Error(RegLoc, "register expected");
2785 // Allow Q regs and just interpret them as the two D sub-registers.
2786 bool isQReg = false;
2787 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2788 Reg = getDRegFromQReg(Reg);
2791 // The register must be in the same register class as the first.
2792 if (!RC->contains(Reg))
2793 return Error(RegLoc, "invalid register in register list");
2794 // List must be monotonically increasing.
2795 if (getARMRegisterNumbering(Reg) < getARMRegisterNumbering(OldReg))
2796 return Error(RegLoc, "register list not in ascending order");
2797 if (getARMRegisterNumbering(Reg) == getARMRegisterNumbering(OldReg)) {
2798 Warning(RegLoc, "duplicated register (" + RegTok.getString() +
2799 ") in register list");
2802 // VFP register lists must also be contiguous.
2803 // It's OK to use the enumeration values directly here rather, as the
2804 // VFP register classes have the enum sorted properly.
2805 if (RC != &ARMMCRegisterClasses[ARM::GPRRegClassID] &&
2807 return Error(RegLoc, "non-contiguous register range");
2808 Registers.push_back(std::pair<unsigned, SMLoc>(Reg, RegLoc));
2810 Registers.push_back(std::pair<unsigned, SMLoc>(++Reg, RegLoc));
2813 SMLoc E = Parser.getTok().getLoc();
2814 if (Parser.getTok().isNot(AsmToken::RCurly))
2815 return Error(E, "'}' expected");
2816 Parser.Lex(); // Eat '}' token.
2818 // Push the register list operand.
2819 Operands.push_back(ARMOperand::CreateRegList(Registers, S, E));
2821 // The ARM system instruction variants for LDM/STM have a '^' token here.
2822 if (Parser.getTok().is(AsmToken::Caret)) {
2823 Operands.push_back(ARMOperand::CreateToken("^",Parser.getTok().getLoc()));
2824 Parser.Lex(); // Eat '^' token.
2830 // Helper function to parse the lane index for vector lists.
2831 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2832 parseVectorLane(VectorLaneTy &LaneKind, unsigned &Index) {
2833 Index = 0; // Always return a defined index value.
2834 if (Parser.getTok().is(AsmToken::LBrac)) {
2835 Parser.Lex(); // Eat the '['.
2836 if (Parser.getTok().is(AsmToken::RBrac)) {
2837 // "Dn[]" is the 'all lanes' syntax.
2838 LaneKind = AllLanes;
2839 Parser.Lex(); // Eat the ']'.
2840 return MatchOperand_Success;
2842 const MCExpr *LaneIndex;
2843 SMLoc Loc = Parser.getTok().getLoc();
2844 if (getParser().ParseExpression(LaneIndex)) {
2845 Error(Loc, "illegal expression");
2846 return MatchOperand_ParseFail;
2848 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(LaneIndex);
2850 Error(Loc, "lane index must be empty or an integer");
2851 return MatchOperand_ParseFail;
2853 if (Parser.getTok().isNot(AsmToken::RBrac)) {
2854 Error(Parser.getTok().getLoc(), "']' expected");
2855 return MatchOperand_ParseFail;
2857 Parser.Lex(); // Eat the ']'.
2858 int64_t Val = CE->getValue();
2860 // FIXME: Make this range check context sensitive for .8, .16, .32.
2861 if (Val < 0 || Val > 7) {
2862 Error(Parser.getTok().getLoc(), "lane index out of range");
2863 return MatchOperand_ParseFail;
2866 LaneKind = IndexedLane;
2867 return MatchOperand_Success;
2870 return MatchOperand_Success;
2873 // parse a vector register list
2874 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2875 parseVectorList(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2876 VectorLaneTy LaneKind;
2878 SMLoc S = Parser.getTok().getLoc();
2879 // As an extension (to match gas), support a plain D register or Q register
2880 // (without encosing curly braces) as a single or double entry list,
2882 if (Parser.getTok().is(AsmToken::Identifier)) {
2883 int Reg = tryParseRegister();
2885 return MatchOperand_NoMatch;
2886 SMLoc E = Parser.getTok().getLoc();
2887 if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg)) {
2888 OperandMatchResultTy Res = parseVectorLane(LaneKind, LaneIndex);
2889 if (Res != MatchOperand_Success)
2893 E = Parser.getTok().getLoc();
2894 Operands.push_back(ARMOperand::CreateVectorList(Reg, 1, false, S, E));
2897 E = Parser.getTok().getLoc();
2898 Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 1, false,
2902 Operands.push_back(ARMOperand::CreateVectorListIndexed(Reg, 1,
2907 return MatchOperand_Success;
2909 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2910 Reg = getDRegFromQReg(Reg);
2911 OperandMatchResultTy Res = parseVectorLane(LaneKind, LaneIndex);
2912 if (Res != MatchOperand_Success)
2916 E = Parser.getTok().getLoc();
2917 Operands.push_back(ARMOperand::CreateVectorList(Reg, 2, false, S, E));
2920 E = Parser.getTok().getLoc();
2921 Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 2, false,
2925 Operands.push_back(ARMOperand::CreateVectorListIndexed(Reg, 2,
2930 return MatchOperand_Success;
2932 Error(S, "vector register expected");
2933 return MatchOperand_ParseFail;
2936 if (Parser.getTok().isNot(AsmToken::LCurly))
2937 return MatchOperand_NoMatch;
2939 Parser.Lex(); // Eat '{' token.
2940 SMLoc RegLoc = Parser.getTok().getLoc();
2942 int Reg = tryParseRegister();
2944 Error(RegLoc, "register expected");
2945 return MatchOperand_ParseFail;
2949 unsigned FirstReg = Reg;
2950 // The list is of D registers, but we also allow Q regs and just interpret
2951 // them as the two D sub-registers.
2952 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
2953 FirstReg = Reg = getDRegFromQReg(Reg);
2954 Spacing = 1; // double-spacing requires explicit D registers, otherwise
2955 // it's ambiguous with four-register single spaced.
2959 if (parseVectorLane(LaneKind, LaneIndex) != MatchOperand_Success)
2960 return MatchOperand_ParseFail;
2962 while (Parser.getTok().is(AsmToken::Comma) ||
2963 Parser.getTok().is(AsmToken::Minus)) {
2964 if (Parser.getTok().is(AsmToken::Minus)) {
2966 Spacing = 1; // Register range implies a single spaced list.
2967 else if (Spacing == 2) {
2968 Error(Parser.getTok().getLoc(),
2969 "sequential registers in double spaced list");
2970 return MatchOperand_ParseFail;
2972 Parser.Lex(); // Eat the minus.
2973 SMLoc EndLoc = Parser.getTok().getLoc();
2974 int EndReg = tryParseRegister();
2976 Error(EndLoc, "register expected");
2977 return MatchOperand_ParseFail;
2979 // Allow Q regs and just interpret them as the two D sub-registers.
2980 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(EndReg))
2981 EndReg = getDRegFromQReg(EndReg) + 1;
2982 // If the register is the same as the start reg, there's nothing
2986 // The register must be in the same register class as the first.
2987 if (!ARMMCRegisterClasses[ARM::DPRRegClassID].contains(EndReg)) {
2988 Error(EndLoc, "invalid register in register list");
2989 return MatchOperand_ParseFail;
2991 // Ranges must go from low to high.
2993 Error(EndLoc, "bad range in register list");
2994 return MatchOperand_ParseFail;
2996 // Parse the lane specifier if present.
2997 VectorLaneTy NextLaneKind;
2998 unsigned NextLaneIndex;
2999 if (parseVectorLane(NextLaneKind, NextLaneIndex) != MatchOperand_Success)
3000 return MatchOperand_ParseFail;
3001 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
3002 Error(EndLoc, "mismatched lane index in register list");
3003 return MatchOperand_ParseFail;
3005 EndLoc = Parser.getTok().getLoc();
3007 // Add all the registers in the range to the register list.
3008 Count += EndReg - Reg;
3012 Parser.Lex(); // Eat the comma.
3013 RegLoc = Parser.getTok().getLoc();
3015 Reg = tryParseRegister();
3017 Error(RegLoc, "register expected");
3018 return MatchOperand_ParseFail;
3020 // vector register lists must be contiguous.
3021 // It's OK to use the enumeration values directly here rather, as the
3022 // VFP register classes have the enum sorted properly.
3024 // The list is of D registers, but we also allow Q regs and just interpret
3025 // them as the two D sub-registers.
3026 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
3028 Spacing = 1; // Register range implies a single spaced list.
3029 else if (Spacing == 2) {
3031 "invalid register in double-spaced list (must be 'D' register')");
3032 return MatchOperand_ParseFail;
3034 Reg = getDRegFromQReg(Reg);
3035 if (Reg != OldReg + 1) {
3036 Error(RegLoc, "non-contiguous register range");
3037 return MatchOperand_ParseFail;
3041 // Parse the lane specifier if present.
3042 VectorLaneTy NextLaneKind;
3043 unsigned NextLaneIndex;
3044 SMLoc EndLoc = Parser.getTok().getLoc();
3045 if (parseVectorLane(NextLaneKind, NextLaneIndex) != MatchOperand_Success)
3046 return MatchOperand_ParseFail;
3047 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
3048 Error(EndLoc, "mismatched lane index in register list");
3049 return MatchOperand_ParseFail;
3053 // Normal D register.
3054 // Figure out the register spacing (single or double) of the list if
3055 // we don't know it already.
3057 Spacing = 1 + (Reg == OldReg + 2);
3059 // Just check that it's contiguous and keep going.
3060 if (Reg != OldReg + Spacing) {
3061 Error(RegLoc, "non-contiguous register range");
3062 return MatchOperand_ParseFail;
3065 // Parse the lane specifier if present.
3066 VectorLaneTy NextLaneKind;
3067 unsigned NextLaneIndex;
3068 SMLoc EndLoc = Parser.getTok().getLoc();
3069 if (parseVectorLane(NextLaneKind, NextLaneIndex) != MatchOperand_Success)
3070 return MatchOperand_ParseFail;
3071 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
3072 Error(EndLoc, "mismatched lane index in register list");
3073 return MatchOperand_ParseFail;
3077 SMLoc E = Parser.getTok().getLoc();
3078 if (Parser.getTok().isNot(AsmToken::RCurly)) {
3079 Error(E, "'}' expected");
3080 return MatchOperand_ParseFail;
3082 Parser.Lex(); // Eat '}' token.
3086 Operands.push_back(ARMOperand::CreateVectorList(FirstReg, Count,
3087 (Spacing == 2), S, E));
3090 Operands.push_back(ARMOperand::CreateVectorListAllLanes(FirstReg, Count,
3095 Operands.push_back(ARMOperand::CreateVectorListIndexed(FirstReg, Count,
3101 return MatchOperand_Success;
3104 /// parseMemBarrierOptOperand - Try to parse DSB/DMB data barrier options.
3105 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3106 parseMemBarrierOptOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3107 SMLoc S = Parser.getTok().getLoc();
3108 const AsmToken &Tok = Parser.getTok();
3109 assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
3110 StringRef OptStr = Tok.getString();
3112 unsigned Opt = StringSwitch<unsigned>(OptStr.slice(0, OptStr.size()))
3113 .Case("sy", ARM_MB::SY)
3114 .Case("st", ARM_MB::ST)
3115 .Case("sh", ARM_MB::ISH)
3116 .Case("ish", ARM_MB::ISH)
3117 .Case("shst", ARM_MB::ISHST)
3118 .Case("ishst", ARM_MB::ISHST)
3119 .Case("nsh", ARM_MB::NSH)
3120 .Case("un", ARM_MB::NSH)
3121 .Case("nshst", ARM_MB::NSHST)
3122 .Case("unst", ARM_MB::NSHST)
3123 .Case("osh", ARM_MB::OSH)
3124 .Case("oshst", ARM_MB::OSHST)
3128 return MatchOperand_NoMatch;
3130 Parser.Lex(); // Eat identifier token.
3131 Operands.push_back(ARMOperand::CreateMemBarrierOpt((ARM_MB::MemBOpt)Opt, S));
3132 return MatchOperand_Success;
3135 /// parseProcIFlagsOperand - Try to parse iflags from CPS instruction.
3136 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3137 parseProcIFlagsOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3138 SMLoc S = Parser.getTok().getLoc();
3139 const AsmToken &Tok = Parser.getTok();
3140 assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
3141 StringRef IFlagsStr = Tok.getString();
3143 // An iflags string of "none" is interpreted to mean that none of the AIF
3144 // bits are set. Not a terribly useful instruction, but a valid encoding.
3145 unsigned IFlags = 0;
3146 if (IFlagsStr != "none") {
3147 for (int i = 0, e = IFlagsStr.size(); i != e; ++i) {
3148 unsigned Flag = StringSwitch<unsigned>(IFlagsStr.substr(i, 1))
3149 .Case("a", ARM_PROC::A)
3150 .Case("i", ARM_PROC::I)
3151 .Case("f", ARM_PROC::F)
3154 // If some specific iflag is already set, it means that some letter is
3155 // present more than once, this is not acceptable.
3156 if (Flag == ~0U || (IFlags & Flag))
3157 return MatchOperand_NoMatch;
3163 Parser.Lex(); // Eat identifier token.
3164 Operands.push_back(ARMOperand::CreateProcIFlags((ARM_PROC::IFlags)IFlags, S));
3165 return MatchOperand_Success;
3168 /// parseMSRMaskOperand - Try to parse mask flags from MSR instruction.
3169 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3170 parseMSRMaskOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3171 SMLoc S = Parser.getTok().getLoc();
3172 const AsmToken &Tok = Parser.getTok();
3173 assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
3174 StringRef Mask = Tok.getString();
3177 // See ARMv6-M 10.1.1
3178 unsigned FlagsVal = StringSwitch<unsigned>(Mask)
3188 .Case("primask", 16)
3189 .Case("basepri", 17)
3190 .Case("basepri_max", 18)
3191 .Case("faultmask", 19)
3192 .Case("control", 20)
3195 if (FlagsVal == ~0U)
3196 return MatchOperand_NoMatch;
3198 if (!hasV7Ops() && FlagsVal >= 17 && FlagsVal <= 19)
3199 // basepri, basepri_max and faultmask only valid for V7m.
3200 return MatchOperand_NoMatch;
3202 Parser.Lex(); // Eat identifier token.
3203 Operands.push_back(ARMOperand::CreateMSRMask(FlagsVal, S));
3204 return MatchOperand_Success;
3207 // Split spec_reg from flag, example: CPSR_sxf => "CPSR" and "sxf"
3208 size_t Start = 0, Next = Mask.find('_');
3209 StringRef Flags = "";
3210 std::string SpecReg = Mask.slice(Start, Next).lower();
3211 if (Next != StringRef::npos)
3212 Flags = Mask.slice(Next+1, Mask.size());
3214 // FlagsVal contains the complete mask:
3216 // 4: Special Reg (cpsr, apsr => 0; spsr => 1)
3217 unsigned FlagsVal = 0;
3219 if (SpecReg == "apsr") {
3220 FlagsVal = StringSwitch<unsigned>(Flags)
3221 .Case("nzcvq", 0x8) // same as CPSR_f
3222 .Case("g", 0x4) // same as CPSR_s
3223 .Case("nzcvqg", 0xc) // same as CPSR_fs
3226 if (FlagsVal == ~0U) {
3228 return MatchOperand_NoMatch;
3230 FlagsVal = 8; // No flag
3232 } else if (SpecReg == "cpsr" || SpecReg == "spsr") {
3233 if (Flags == "all") // cpsr_all is an alias for cpsr_fc
3235 for (int i = 0, e = Flags.size(); i != e; ++i) {
3236 unsigned Flag = StringSwitch<unsigned>(Flags.substr(i, 1))
3243 // If some specific flag is already set, it means that some letter is
3244 // present more than once, this is not acceptable.
3245 if (FlagsVal == ~0U || (FlagsVal & Flag))
3246 return MatchOperand_NoMatch;
3249 } else // No match for special register.
3250 return MatchOperand_NoMatch;
3252 // Special register without flags is NOT equivalent to "fc" flags.
3253 // NOTE: This is a divergence from gas' behavior. Uncommenting the following
3254 // two lines would enable gas compatibility at the expense of breaking
3260 // Bit 4: Special Reg (cpsr, apsr => 0; spsr => 1)
3261 if (SpecReg == "spsr")
3264 Parser.Lex(); // Eat identifier token.
3265 Operands.push_back(ARMOperand::CreateMSRMask(FlagsVal, S));
3266 return MatchOperand_Success;
3269 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3270 parsePKHImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands, StringRef Op,
3271 int Low, int High) {
3272 const AsmToken &Tok = Parser.getTok();
3273 if (Tok.isNot(AsmToken::Identifier)) {
3274 Error(Parser.getTok().getLoc(), Op + " operand expected.");
3275 return MatchOperand_ParseFail;
3277 StringRef ShiftName = Tok.getString();
3278 std::string LowerOp = Op.lower();
3279 std::string UpperOp = Op.upper();
3280 if (ShiftName != LowerOp && ShiftName != UpperOp) {
3281 Error(Parser.getTok().getLoc(), Op + " operand expected.");
3282 return MatchOperand_ParseFail;
3284 Parser.Lex(); // Eat shift type token.
3286 // There must be a '#' and a shift amount.
3287 if (Parser.getTok().isNot(AsmToken::Hash) &&
3288 Parser.getTok().isNot(AsmToken::Dollar)) {
3289 Error(Parser.getTok().getLoc(), "'#' expected");
3290 return MatchOperand_ParseFail;
3292 Parser.Lex(); // Eat hash token.
3294 const MCExpr *ShiftAmount;
3295 SMLoc Loc = Parser.getTok().getLoc();
3296 if (getParser().ParseExpression(ShiftAmount)) {
3297 Error(Loc, "illegal expression");
3298 return MatchOperand_ParseFail;
3300 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
3302 Error(Loc, "constant expression expected");
3303 return MatchOperand_ParseFail;
3305 int Val = CE->getValue();
3306 if (Val < Low || Val > High) {
3307 Error(Loc, "immediate value out of range");
3308 return MatchOperand_ParseFail;
3311 Operands.push_back(ARMOperand::CreateImm(CE, Loc, Parser.getTok().getLoc()));
3313 return MatchOperand_Success;
3316 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3317 parseSetEndImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3318 const AsmToken &Tok = Parser.getTok();
3319 SMLoc S = Tok.getLoc();
3320 if (Tok.isNot(AsmToken::Identifier)) {
3321 Error(Tok.getLoc(), "'be' or 'le' operand expected");
3322 return MatchOperand_ParseFail;
3324 int Val = StringSwitch<int>(Tok.getString())
3328 Parser.Lex(); // Eat the token.
3331 Error(Tok.getLoc(), "'be' or 'le' operand expected");
3332 return MatchOperand_ParseFail;
3334 Operands.push_back(ARMOperand::CreateImm(MCConstantExpr::Create(Val,
3336 S, Parser.getTok().getLoc()));
3337 return MatchOperand_Success;
3340 /// parseShifterImm - Parse the shifter immediate operand for SSAT/USAT
3341 /// instructions. Legal values are:
3342 /// lsl #n 'n' in [0,31]
3343 /// asr #n 'n' in [1,32]
3344 /// n == 32 encoded as n == 0.
3345 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3346 parseShifterImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3347 const AsmToken &Tok = Parser.getTok();
3348 SMLoc S = Tok.getLoc();
3349 if (Tok.isNot(AsmToken::Identifier)) {
3350 Error(S, "shift operator 'asr' or 'lsl' expected");
3351 return MatchOperand_ParseFail;
3353 StringRef ShiftName = Tok.getString();
3355 if (ShiftName == "lsl" || ShiftName == "LSL")
3357 else if (ShiftName == "asr" || ShiftName == "ASR")
3360 Error(S, "shift operator 'asr' or 'lsl' expected");
3361 return MatchOperand_ParseFail;
3363 Parser.Lex(); // Eat the operator.
3365 // A '#' and a shift amount.
3366 if (Parser.getTok().isNot(AsmToken::Hash) &&
3367 Parser.getTok().isNot(AsmToken::Dollar)) {
3368 Error(Parser.getTok().getLoc(), "'#' expected");
3369 return MatchOperand_ParseFail;
3371 Parser.Lex(); // Eat hash token.
3373 const MCExpr *ShiftAmount;
3374 SMLoc E = Parser.getTok().getLoc();
3375 if (getParser().ParseExpression(ShiftAmount)) {
3376 Error(E, "malformed shift expression");
3377 return MatchOperand_ParseFail;
3379 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
3381 Error(E, "shift amount must be an immediate");
3382 return MatchOperand_ParseFail;
3385 int64_t Val = CE->getValue();
3387 // Shift amount must be in [1,32]
3388 if (Val < 1 || Val > 32) {
3389 Error(E, "'asr' shift amount must be in range [1,32]");
3390 return MatchOperand_ParseFail;
3392 // asr #32 encoded as asr #0, but is not allowed in Thumb2 mode.
3393 if (isThumb() && Val == 32) {
3394 Error(E, "'asr #32' shift amount not allowed in Thumb mode");
3395 return MatchOperand_ParseFail;
3397 if (Val == 32) Val = 0;
3399 // Shift amount must be in [1,32]
3400 if (Val < 0 || Val > 31) {
3401 Error(E, "'lsr' shift amount must be in range [0,31]");
3402 return MatchOperand_ParseFail;
3406 E = Parser.getTok().getLoc();
3407 Operands.push_back(ARMOperand::CreateShifterImm(isASR, Val, S, E));
3409 return MatchOperand_Success;
3412 /// parseRotImm - Parse the shifter immediate operand for SXTB/UXTB family
3413 /// of instructions. Legal values are:
3414 /// ror #n 'n' in {0, 8, 16, 24}
3415 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3416 parseRotImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3417 const AsmToken &Tok = Parser.getTok();
3418 SMLoc S = Tok.getLoc();
3419 if (Tok.isNot(AsmToken::Identifier))
3420 return MatchOperand_NoMatch;
3421 StringRef ShiftName = Tok.getString();
3422 if (ShiftName != "ror" && ShiftName != "ROR")
3423 return MatchOperand_NoMatch;
3424 Parser.Lex(); // Eat the operator.
3426 // A '#' and a rotate amount.
3427 if (Parser.getTok().isNot(AsmToken::Hash) &&
3428 Parser.getTok().isNot(AsmToken::Dollar)) {
3429 Error(Parser.getTok().getLoc(), "'#' expected");
3430 return MatchOperand_ParseFail;
3432 Parser.Lex(); // Eat hash token.
3434 const MCExpr *ShiftAmount;
3435 SMLoc E = Parser.getTok().getLoc();
3436 if (getParser().ParseExpression(ShiftAmount)) {
3437 Error(E, "malformed rotate expression");
3438 return MatchOperand_ParseFail;
3440 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
3442 Error(E, "rotate amount must be an immediate");
3443 return MatchOperand_ParseFail;
3446 int64_t Val = CE->getValue();
3447 // Shift amount must be in {0, 8, 16, 24} (0 is undocumented extension)
3448 // normally, zero is represented in asm by omitting the rotate operand
3450 if (Val != 8 && Val != 16 && Val != 24 && Val != 0) {
3451 Error(E, "'ror' rotate amount must be 8, 16, or 24");
3452 return MatchOperand_ParseFail;
3455 E = Parser.getTok().getLoc();
3456 Operands.push_back(ARMOperand::CreateRotImm(Val, S, E));
3458 return MatchOperand_Success;
3461 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3462 parseBitfield(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3463 SMLoc S = Parser.getTok().getLoc();
3464 // The bitfield descriptor is really two operands, the LSB and the width.
3465 if (Parser.getTok().isNot(AsmToken::Hash) &&
3466 Parser.getTok().isNot(AsmToken::Dollar)) {
3467 Error(Parser.getTok().getLoc(), "'#' expected");
3468 return MatchOperand_ParseFail;
3470 Parser.Lex(); // Eat hash token.
3472 const MCExpr *LSBExpr;
3473 SMLoc E = Parser.getTok().getLoc();
3474 if (getParser().ParseExpression(LSBExpr)) {
3475 Error(E, "malformed immediate expression");
3476 return MatchOperand_ParseFail;
3478 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(LSBExpr);
3480 Error(E, "'lsb' operand must be an immediate");
3481 return MatchOperand_ParseFail;
3484 int64_t LSB = CE->getValue();
3485 // The LSB must be in the range [0,31]
3486 if (LSB < 0 || LSB > 31) {
3487 Error(E, "'lsb' operand must be in the range [0,31]");
3488 return MatchOperand_ParseFail;
3490 E = Parser.getTok().getLoc();
3492 // Expect another immediate operand.
3493 if (Parser.getTok().isNot(AsmToken::Comma)) {
3494 Error(Parser.getTok().getLoc(), "too few operands");
3495 return MatchOperand_ParseFail;
3497 Parser.Lex(); // Eat hash token.
3498 if (Parser.getTok().isNot(AsmToken::Hash) &&
3499 Parser.getTok().isNot(AsmToken::Dollar)) {
3500 Error(Parser.getTok().getLoc(), "'#' expected");
3501 return MatchOperand_ParseFail;
3503 Parser.Lex(); // Eat hash token.
3505 const MCExpr *WidthExpr;
3506 if (getParser().ParseExpression(WidthExpr)) {
3507 Error(E, "malformed immediate expression");
3508 return MatchOperand_ParseFail;
3510 CE = dyn_cast<MCConstantExpr>(WidthExpr);
3512 Error(E, "'width' operand must be an immediate");
3513 return MatchOperand_ParseFail;
3516 int64_t Width = CE->getValue();
3517 // The LSB must be in the range [1,32-lsb]
3518 if (Width < 1 || Width > 32 - LSB) {
3519 Error(E, "'width' operand must be in the range [1,32-lsb]");
3520 return MatchOperand_ParseFail;
3522 E = Parser.getTok().getLoc();
3524 Operands.push_back(ARMOperand::CreateBitfield(LSB, Width, S, E));
3526 return MatchOperand_Success;
3529 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3530 parsePostIdxReg(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3531 // Check for a post-index addressing register operand. Specifically:
3532 // postidx_reg := '+' register {, shift}
3533 // | '-' register {, shift}
3534 // | register {, shift}
3536 // This method must return MatchOperand_NoMatch without consuming any tokens
3537 // in the case where there is no match, as other alternatives take other
3539 AsmToken Tok = Parser.getTok();
3540 SMLoc S = Tok.getLoc();
3541 bool haveEaten = false;
3544 if (Tok.is(AsmToken::Plus)) {
3545 Parser.Lex(); // Eat the '+' token.
3547 } else if (Tok.is(AsmToken::Minus)) {
3548 Parser.Lex(); // Eat the '-' token.
3552 if (Parser.getTok().is(AsmToken::Identifier))
3553 Reg = tryParseRegister();
3556 return MatchOperand_NoMatch;
3557 Error(Parser.getTok().getLoc(), "register expected");
3558 return MatchOperand_ParseFail;
3560 SMLoc E = Parser.getTok().getLoc();
3562 ARM_AM::ShiftOpc ShiftTy = ARM_AM::no_shift;
3563 unsigned ShiftImm = 0;
3564 if (Parser.getTok().is(AsmToken::Comma)) {
3565 Parser.Lex(); // Eat the ','.
3566 if (parseMemRegOffsetShift(ShiftTy, ShiftImm))
3567 return MatchOperand_ParseFail;
3570 Operands.push_back(ARMOperand::CreatePostIdxReg(Reg, isAdd, ShiftTy,
3573 return MatchOperand_Success;
3576 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3577 parseAM3Offset(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3578 // Check for a post-index addressing register operand. Specifically:
3579 // am3offset := '+' register
3586 // This method must return MatchOperand_NoMatch without consuming any tokens
3587 // in the case where there is no match, as other alternatives take other
3589 AsmToken Tok = Parser.getTok();
3590 SMLoc S = Tok.getLoc();
3592 // Do immediates first, as we always parse those if we have a '#'.
3593 if (Parser.getTok().is(AsmToken::Hash) ||
3594 Parser.getTok().is(AsmToken::Dollar)) {
3595 Parser.Lex(); // Eat the '#'.
3596 // Explicitly look for a '-', as we need to encode negative zero
3598 bool isNegative = Parser.getTok().is(AsmToken::Minus);
3599 const MCExpr *Offset;
3600 if (getParser().ParseExpression(Offset))
3601 return MatchOperand_ParseFail;
3602 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Offset);
3604 Error(S, "constant expression expected");
3605 return MatchOperand_ParseFail;
3607 SMLoc E = Tok.getLoc();
3608 // Negative zero is encoded as the flag value INT32_MIN.
3609 int32_t Val = CE->getValue();
3610 if (isNegative && Val == 0)
3614 ARMOperand::CreateImm(MCConstantExpr::Create(Val, getContext()), S, E));
3616 return MatchOperand_Success;
3620 bool haveEaten = false;
3623 if (Tok.is(AsmToken::Plus)) {
3624 Parser.Lex(); // Eat the '+' token.
3626 } else if (Tok.is(AsmToken::Minus)) {
3627 Parser.Lex(); // Eat the '-' token.
3631 if (Parser.getTok().is(AsmToken::Identifier))
3632 Reg = tryParseRegister();
3635 return MatchOperand_NoMatch;
3636 Error(Parser.getTok().getLoc(), "register expected");
3637 return MatchOperand_ParseFail;
3639 SMLoc E = Parser.getTok().getLoc();
3641 Operands.push_back(ARMOperand::CreatePostIdxReg(Reg, isAdd, ARM_AM::no_shift,
3644 return MatchOperand_Success;
3647 /// cvtT2LdrdPre - Convert parsed operands to MCInst.
3648 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3649 /// when they refer multiple MIOperands inside a single one.
3651 cvtT2LdrdPre(MCInst &Inst, unsigned Opcode,
3652 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3654 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3655 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3656 // Create a writeback register dummy placeholder.
3657 Inst.addOperand(MCOperand::CreateReg(0));
3659 ((ARMOperand*)Operands[4])->addMemImm8s4OffsetOperands(Inst, 2);
3661 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3665 /// cvtT2StrdPre - Convert parsed operands to MCInst.
3666 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3667 /// when they refer multiple MIOperands inside a single one.
3669 cvtT2StrdPre(MCInst &Inst, unsigned Opcode,
3670 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3671 // Create a writeback register dummy placeholder.
3672 Inst.addOperand(MCOperand::CreateReg(0));
3674 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3675 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3677 ((ARMOperand*)Operands[4])->addMemImm8s4OffsetOperands(Inst, 2);
3679 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3683 /// cvtLdWriteBackRegT2AddrModeImm8 - Convert parsed operands to MCInst.
3684 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3685 /// when they refer multiple MIOperands inside a single one.
3687 cvtLdWriteBackRegT2AddrModeImm8(MCInst &Inst, unsigned Opcode,
3688 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3689 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3691 // Create a writeback register dummy placeholder.
3692 Inst.addOperand(MCOperand::CreateImm(0));
3694 ((ARMOperand*)Operands[3])->addMemImm8OffsetOperands(Inst, 2);
3695 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3699 /// cvtStWriteBackRegT2AddrModeImm8 - Convert parsed operands to MCInst.
3700 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3701 /// when they refer multiple MIOperands inside a single one.
3703 cvtStWriteBackRegT2AddrModeImm8(MCInst &Inst, unsigned Opcode,
3704 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3705 // Create a writeback register dummy placeholder.
3706 Inst.addOperand(MCOperand::CreateImm(0));
3707 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3708 ((ARMOperand*)Operands[3])->addMemImm8OffsetOperands(Inst, 2);
3709 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3713 /// cvtLdWriteBackRegAddrMode2 - Convert parsed operands to MCInst.
3714 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3715 /// when they refer multiple MIOperands inside a single one.
3717 cvtLdWriteBackRegAddrMode2(MCInst &Inst, unsigned Opcode,
3718 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3719 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3721 // Create a writeback register dummy placeholder.
3722 Inst.addOperand(MCOperand::CreateImm(0));
3724 ((ARMOperand*)Operands[3])->addAddrMode2Operands(Inst, 3);
3725 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3729 /// cvtLdWriteBackRegAddrModeImm12 - 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 cvtLdWriteBackRegAddrModeImm12(MCInst &Inst, unsigned Opcode,
3734 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3735 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3737 // Create a writeback register dummy placeholder.
3738 Inst.addOperand(MCOperand::CreateImm(0));
3740 ((ARMOperand*)Operands[3])->addMemImm12OffsetOperands(Inst, 2);
3741 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3746 /// cvtStWriteBackRegAddrModeImm12 - Convert parsed operands to MCInst.
3747 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3748 /// when they refer multiple MIOperands inside a single one.
3750 cvtStWriteBackRegAddrModeImm12(MCInst &Inst, unsigned Opcode,
3751 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3752 // Create a writeback register dummy placeholder.
3753 Inst.addOperand(MCOperand::CreateImm(0));
3754 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3755 ((ARMOperand*)Operands[3])->addMemImm12OffsetOperands(Inst, 2);
3756 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3760 /// cvtStWriteBackRegAddrMode2 - Convert parsed operands to MCInst.
3761 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3762 /// when they refer multiple MIOperands inside a single one.
3764 cvtStWriteBackRegAddrMode2(MCInst &Inst, unsigned Opcode,
3765 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3766 // Create a writeback register dummy placeholder.
3767 Inst.addOperand(MCOperand::CreateImm(0));
3768 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3769 ((ARMOperand*)Operands[3])->addAddrMode2Operands(Inst, 3);
3770 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3774 /// cvtStWriteBackRegAddrMode3 - Convert parsed operands to MCInst.
3775 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3776 /// when they refer multiple MIOperands inside a single one.
3778 cvtStWriteBackRegAddrMode3(MCInst &Inst, unsigned Opcode,
3779 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3780 // Create a writeback register dummy placeholder.
3781 Inst.addOperand(MCOperand::CreateImm(0));
3782 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3783 ((ARMOperand*)Operands[3])->addAddrMode3Operands(Inst, 3);
3784 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3788 /// cvtLdExtTWriteBackImm - Convert parsed operands to MCInst.
3789 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3790 /// when they refer multiple MIOperands inside a single one.
3792 cvtLdExtTWriteBackImm(MCInst &Inst, unsigned Opcode,
3793 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3795 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3796 // Create a writeback register dummy placeholder.
3797 Inst.addOperand(MCOperand::CreateImm(0));
3799 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
3801 ((ARMOperand*)Operands[4])->addPostIdxImm8Operands(Inst, 1);
3803 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3807 /// cvtLdExtTWriteBackReg - Convert parsed operands to MCInst.
3808 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3809 /// when they refer multiple MIOperands inside a single one.
3811 cvtLdExtTWriteBackReg(MCInst &Inst, unsigned Opcode,
3812 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3814 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3815 // Create a writeback register dummy placeholder.
3816 Inst.addOperand(MCOperand::CreateImm(0));
3818 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
3820 ((ARMOperand*)Operands[4])->addPostIdxRegOperands(Inst, 2);
3822 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3826 /// cvtStExtTWriteBackImm - Convert parsed operands to MCInst.
3827 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3828 /// when they refer multiple MIOperands inside a single one.
3830 cvtStExtTWriteBackImm(MCInst &Inst, unsigned Opcode,
3831 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3832 // Create a writeback register dummy placeholder.
3833 Inst.addOperand(MCOperand::CreateImm(0));
3835 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3837 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
3839 ((ARMOperand*)Operands[4])->addPostIdxImm8Operands(Inst, 1);
3841 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3845 /// cvtStExtTWriteBackReg - Convert parsed operands to MCInst.
3846 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3847 /// when they refer multiple MIOperands inside a single one.
3849 cvtStExtTWriteBackReg(MCInst &Inst, unsigned Opcode,
3850 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3851 // Create a writeback register dummy placeholder.
3852 Inst.addOperand(MCOperand::CreateImm(0));
3854 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3856 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
3858 ((ARMOperand*)Operands[4])->addPostIdxRegOperands(Inst, 2);
3860 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3864 /// cvtLdrdPre - Convert parsed operands to MCInst.
3865 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3866 /// when they refer multiple MIOperands inside a single one.
3868 cvtLdrdPre(MCInst &Inst, unsigned Opcode,
3869 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3871 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3872 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3873 // Create a writeback register dummy placeholder.
3874 Inst.addOperand(MCOperand::CreateImm(0));
3876 ((ARMOperand*)Operands[4])->addAddrMode3Operands(Inst, 3);
3878 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3882 /// cvtStrdPre - Convert parsed operands to MCInst.
3883 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3884 /// when they refer multiple MIOperands inside a single one.
3886 cvtStrdPre(MCInst &Inst, unsigned Opcode,
3887 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3888 // Create a writeback register dummy placeholder.
3889 Inst.addOperand(MCOperand::CreateImm(0));
3891 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3892 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3894 ((ARMOperand*)Operands[4])->addAddrMode3Operands(Inst, 3);
3896 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3900 /// cvtLdWriteBackRegAddrMode3 - Convert parsed operands to MCInst.
3901 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3902 /// when they refer multiple MIOperands inside a single one.
3904 cvtLdWriteBackRegAddrMode3(MCInst &Inst, unsigned Opcode,
3905 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3906 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
3907 // Create a writeback register dummy placeholder.
3908 Inst.addOperand(MCOperand::CreateImm(0));
3909 ((ARMOperand*)Operands[3])->addAddrMode3Operands(Inst, 3);
3910 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3914 /// cvtThumbMultiple- Convert parsed operands to MCInst.
3915 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
3916 /// when they refer multiple MIOperands inside a single one.
3918 cvtThumbMultiply(MCInst &Inst, unsigned Opcode,
3919 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3920 // The second source operand must be the same register as the destination
3922 if (Operands.size() == 6 &&
3923 (((ARMOperand*)Operands[3])->getReg() !=
3924 ((ARMOperand*)Operands[5])->getReg()) &&
3925 (((ARMOperand*)Operands[3])->getReg() !=
3926 ((ARMOperand*)Operands[4])->getReg())) {
3927 Error(Operands[3]->getStartLoc(),
3928 "destination register must match source register");
3931 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
3932 ((ARMOperand*)Operands[1])->addCCOutOperands(Inst, 1);
3933 // If we have a three-operand form, make sure to set Rn to be the operand
3934 // that isn't the same as Rd.
3936 if (Operands.size() == 6 &&
3937 ((ARMOperand*)Operands[4])->getReg() ==
3938 ((ARMOperand*)Operands[3])->getReg())
3940 ((ARMOperand*)Operands[RegOp])->addRegOperands(Inst, 1);
3941 Inst.addOperand(Inst.getOperand(0));
3942 ((ARMOperand*)Operands[2])->addCondCodeOperands(Inst, 2);
3948 cvtVLDwbFixed(MCInst &Inst, unsigned Opcode,
3949 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3951 ((ARMOperand*)Operands[3])->addVecListOperands(Inst, 1);
3952 // Create a writeback register dummy placeholder.
3953 Inst.addOperand(MCOperand::CreateImm(0));
3955 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
3957 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3962 cvtVLDwbRegister(MCInst &Inst, unsigned Opcode,
3963 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3965 ((ARMOperand*)Operands[3])->addVecListOperands(Inst, 1);
3966 // Create a writeback register dummy placeholder.
3967 Inst.addOperand(MCOperand::CreateImm(0));
3969 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
3971 ((ARMOperand*)Operands[5])->addRegOperands(Inst, 1);
3973 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3978 cvtVSTwbFixed(MCInst &Inst, unsigned Opcode,
3979 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3980 // Create a writeback register dummy placeholder.
3981 Inst.addOperand(MCOperand::CreateImm(0));
3983 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
3985 ((ARMOperand*)Operands[3])->addVecListOperands(Inst, 1);
3987 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
3992 cvtVSTwbRegister(MCInst &Inst, unsigned Opcode,
3993 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3994 // Create a writeback register dummy placeholder.
3995 Inst.addOperand(MCOperand::CreateImm(0));
3997 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
3999 ((ARMOperand*)Operands[5])->addRegOperands(Inst, 1);
4001 ((ARMOperand*)Operands[3])->addVecListOperands(Inst, 1);
4003 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4007 /// Parse an ARM memory expression, return false if successful else return true
4008 /// or an error. The first token must be a '[' when called.
4010 parseMemory(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4012 assert(Parser.getTok().is(AsmToken::LBrac) &&
4013 "Token is not a Left Bracket");
4014 S = Parser.getTok().getLoc();
4015 Parser.Lex(); // Eat left bracket token.
4017 const AsmToken &BaseRegTok = Parser.getTok();
4018 int BaseRegNum = tryParseRegister();
4019 if (BaseRegNum == -1)
4020 return Error(BaseRegTok.getLoc(), "register expected");
4022 // The next token must either be a comma or a closing bracket.
4023 const AsmToken &Tok = Parser.getTok();
4024 if (!Tok.is(AsmToken::Comma) && !Tok.is(AsmToken::RBrac))
4025 return Error(Tok.getLoc(), "malformed memory operand");
4027 if (Tok.is(AsmToken::RBrac)) {
4029 Parser.Lex(); // Eat right bracket token.
4031 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, 0, 0, ARM_AM::no_shift,
4032 0, 0, false, S, E));
4034 // If there's a pre-indexing writeback marker, '!', just add it as a token
4035 // operand. It's rather odd, but syntactically valid.
4036 if (Parser.getTok().is(AsmToken::Exclaim)) {
4037 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4038 Parser.Lex(); // Eat the '!'.
4044 assert(Tok.is(AsmToken::Comma) && "Lost comma in memory operand?!");
4045 Parser.Lex(); // Eat the comma.
4047 // If we have a ':', it's an alignment specifier.
4048 if (Parser.getTok().is(AsmToken::Colon)) {
4049 Parser.Lex(); // Eat the ':'.
4050 E = Parser.getTok().getLoc();
4053 if (getParser().ParseExpression(Expr))
4056 // The expression has to be a constant. Memory references with relocations
4057 // don't come through here, as they use the <label> forms of the relevant
4059 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
4061 return Error (E, "constant expression expected");
4064 switch (CE->getValue()) {
4067 "alignment specifier must be 16, 32, 64, 128, or 256 bits");
4068 case 16: Align = 2; break;
4069 case 32: Align = 4; break;
4070 case 64: Align = 8; break;
4071 case 128: Align = 16; break;
4072 case 256: Align = 32; break;
4075 // Now we should have the closing ']'
4076 E = Parser.getTok().getLoc();
4077 if (Parser.getTok().isNot(AsmToken::RBrac))
4078 return Error(E, "']' expected");
4079 Parser.Lex(); // Eat right bracket token.
4081 // Don't worry about range checking the value here. That's handled by
4082 // the is*() predicates.
4083 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, 0, 0,
4084 ARM_AM::no_shift, 0, Align,
4087 // If there's a pre-indexing writeback marker, '!', just add it as a token
4089 if (Parser.getTok().is(AsmToken::Exclaim)) {
4090 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4091 Parser.Lex(); // Eat the '!'.
4097 // If we have a '#', it's an immediate offset, else assume it's a register
4098 // offset. Be friendly and also accept a plain integer (without a leading
4099 // hash) for gas compatibility.
4100 if (Parser.getTok().is(AsmToken::Hash) ||
4101 Parser.getTok().is(AsmToken::Dollar) ||
4102 Parser.getTok().is(AsmToken::Integer)) {
4103 if (Parser.getTok().isNot(AsmToken::Integer))
4104 Parser.Lex(); // Eat the '#'.
4105 E = Parser.getTok().getLoc();
4107 bool isNegative = getParser().getTok().is(AsmToken::Minus);
4108 const MCExpr *Offset;
4109 if (getParser().ParseExpression(Offset))
4112 // The expression has to be a constant. Memory references with relocations
4113 // don't come through here, as they use the <label> forms of the relevant
4115 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Offset);
4117 return Error (E, "constant expression expected");
4119 // If the constant was #-0, represent it as INT32_MIN.
4120 int32_t Val = CE->getValue();
4121 if (isNegative && Val == 0)
4122 CE = MCConstantExpr::Create(INT32_MIN, getContext());
4124 // Now we should have the closing ']'
4125 E = Parser.getTok().getLoc();
4126 if (Parser.getTok().isNot(AsmToken::RBrac))
4127 return Error(E, "']' expected");
4128 Parser.Lex(); // Eat right bracket token.
4130 // Don't worry about range checking the value here. That's handled by
4131 // the is*() predicates.
4132 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, CE, 0,
4133 ARM_AM::no_shift, 0, 0,
4136 // If there's a pre-indexing writeback marker, '!', just add it as a token
4138 if (Parser.getTok().is(AsmToken::Exclaim)) {
4139 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4140 Parser.Lex(); // Eat the '!'.
4146 // The register offset is optionally preceded by a '+' or '-'
4147 bool isNegative = false;
4148 if (Parser.getTok().is(AsmToken::Minus)) {
4150 Parser.Lex(); // Eat the '-'.
4151 } else if (Parser.getTok().is(AsmToken::Plus)) {
4153 Parser.Lex(); // Eat the '+'.
4156 E = Parser.getTok().getLoc();
4157 int OffsetRegNum = tryParseRegister();
4158 if (OffsetRegNum == -1)
4159 return Error(E, "register expected");
4161 // If there's a shift operator, handle it.
4162 ARM_AM::ShiftOpc ShiftType = ARM_AM::no_shift;
4163 unsigned ShiftImm = 0;
4164 if (Parser.getTok().is(AsmToken::Comma)) {
4165 Parser.Lex(); // Eat the ','.
4166 if (parseMemRegOffsetShift(ShiftType, ShiftImm))
4170 // Now we should have the closing ']'
4171 E = Parser.getTok().getLoc();
4172 if (Parser.getTok().isNot(AsmToken::RBrac))
4173 return Error(E, "']' expected");
4174 Parser.Lex(); // Eat right bracket token.
4176 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, 0, OffsetRegNum,
4177 ShiftType, ShiftImm, 0, isNegative,
4180 // If there's a pre-indexing writeback marker, '!', just add it as a token
4182 if (Parser.getTok().is(AsmToken::Exclaim)) {
4183 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4184 Parser.Lex(); // Eat the '!'.
4190 /// parseMemRegOffsetShift - one of these two:
4191 /// ( lsl | lsr | asr | ror ) , # shift_amount
4193 /// return true if it parses a shift otherwise it returns false.
4194 bool ARMAsmParser::parseMemRegOffsetShift(ARM_AM::ShiftOpc &St,
4196 SMLoc Loc = Parser.getTok().getLoc();
4197 const AsmToken &Tok = Parser.getTok();
4198 if (Tok.isNot(AsmToken::Identifier))
4200 StringRef ShiftName = Tok.getString();
4201 if (ShiftName == "lsl" || ShiftName == "LSL" ||
4202 ShiftName == "asl" || ShiftName == "ASL")
4204 else if (ShiftName == "lsr" || ShiftName == "LSR")
4206 else if (ShiftName == "asr" || ShiftName == "ASR")
4208 else if (ShiftName == "ror" || ShiftName == "ROR")
4210 else if (ShiftName == "rrx" || ShiftName == "RRX")
4213 return Error(Loc, "illegal shift operator");
4214 Parser.Lex(); // Eat shift type token.
4216 // rrx stands alone.
4218 if (St != ARM_AM::rrx) {
4219 Loc = Parser.getTok().getLoc();
4220 // A '#' and a shift amount.
4221 const AsmToken &HashTok = Parser.getTok();
4222 if (HashTok.isNot(AsmToken::Hash) &&
4223 HashTok.isNot(AsmToken::Dollar))
4224 return Error(HashTok.getLoc(), "'#' expected");
4225 Parser.Lex(); // Eat hash token.
4228 if (getParser().ParseExpression(Expr))
4230 // Range check the immediate.
4231 // lsl, ror: 0 <= imm <= 31
4232 // lsr, asr: 0 <= imm <= 32
4233 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
4235 return Error(Loc, "shift amount must be an immediate");
4236 int64_t Imm = CE->getValue();
4238 ((St == ARM_AM::lsl || St == ARM_AM::ror) && Imm > 31) ||
4239 ((St == ARM_AM::lsr || St == ARM_AM::asr) && Imm > 32))
4240 return Error(Loc, "immediate shift value out of range");
4247 /// parseFPImm - A floating point immediate expression operand.
4248 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
4249 parseFPImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4250 SMLoc S = Parser.getTok().getLoc();
4252 if (Parser.getTok().isNot(AsmToken::Hash) &&
4253 Parser.getTok().isNot(AsmToken::Dollar))
4254 return MatchOperand_NoMatch;
4256 // Disambiguate the VMOV forms that can accept an FP immediate.
4257 // vmov.f32 <sreg>, #imm
4258 // vmov.f64 <dreg>, #imm
4259 // vmov.f32 <dreg>, #imm @ vector f32x2
4260 // vmov.f32 <qreg>, #imm @ vector f32x4
4262 // There are also the NEON VMOV instructions which expect an
4263 // integer constant. Make sure we don't try to parse an FPImm
4265 // vmov.i{8|16|32|64} <dreg|qreg>, #imm
4266 ARMOperand *TyOp = static_cast<ARMOperand*>(Operands[2]);
4267 if (!TyOp->isToken() || (TyOp->getToken() != ".f32" &&
4268 TyOp->getToken() != ".f64"))
4269 return MatchOperand_NoMatch;
4271 Parser.Lex(); // Eat the '#'.
4273 // Handle negation, as that still comes through as a separate token.
4274 bool isNegative = false;
4275 if (Parser.getTok().is(AsmToken::Minus)) {
4279 const AsmToken &Tok = Parser.getTok();
4280 SMLoc Loc = Tok.getLoc();
4281 if (Tok.is(AsmToken::Real)) {
4282 APFloat RealVal(APFloat::IEEEdouble, Tok.getString());
4283 uint64_t IntVal = RealVal.bitcastToAPInt().getZExtValue();
4284 // If we had a '-' in front, toggle the sign bit.
4285 IntVal ^= (uint64_t)isNegative << 63;
4286 int Val = ARM_AM::getFP64Imm(APInt(64, IntVal));
4287 Parser.Lex(); // Eat the token.
4289 Error(Loc, "floating point value out of range");
4290 return MatchOperand_ParseFail;
4292 Operands.push_back(ARMOperand::CreateFPImm(Val, S, getContext()));
4293 return MatchOperand_Success;
4295 if (Tok.is(AsmToken::Integer)) {
4296 int64_t Val = Tok.getIntVal();
4297 Parser.Lex(); // Eat the token.
4298 if (Val > 255 || Val < 0) {
4299 Error(Loc, "encoded floating point value out of range");
4300 return MatchOperand_ParseFail;
4302 Operands.push_back(ARMOperand::CreateFPImm(Val, S, getContext()));
4303 return MatchOperand_Success;
4306 Error(Loc, "invalid floating point immediate");
4307 return MatchOperand_ParseFail;
4309 /// Parse a arm instruction operand. For now this parses the operand regardless
4310 /// of the mnemonic.
4311 bool ARMAsmParser::parseOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands,
4312 StringRef Mnemonic) {
4315 // Check if the current operand has a custom associated parser, if so, try to
4316 // custom parse the operand, or fallback to the general approach.
4317 OperandMatchResultTy ResTy = MatchOperandParserImpl(Operands, Mnemonic);
4318 if (ResTy == MatchOperand_Success)
4320 // If there wasn't a custom match, try the generic matcher below. Otherwise,
4321 // there was a match, but an error occurred, in which case, just return that
4322 // the operand parsing failed.
4323 if (ResTy == MatchOperand_ParseFail)
4326 switch (getLexer().getKind()) {
4328 Error(Parser.getTok().getLoc(), "unexpected token in operand");
4330 case AsmToken::Identifier: {
4331 if (!tryParseRegisterWithWriteBack(Operands))
4333 int Res = tryParseShiftRegister(Operands);
4334 if (Res == 0) // success
4336 else if (Res == -1) // irrecoverable error
4338 // If this is VMRS, check for the apsr_nzcv operand.
4339 if (Mnemonic == "vmrs" && Parser.getTok().getString() == "apsr_nzcv") {
4340 S = Parser.getTok().getLoc();
4342 Operands.push_back(ARMOperand::CreateToken("apsr_nzcv", S));
4346 // Fall though for the Identifier case that is not a register or a
4349 case AsmToken::LParen: // parenthesized expressions like (_strcmp-4)
4350 case AsmToken::Integer: // things like 1f and 2b as a branch targets
4351 case AsmToken::String: // quoted label names.
4352 case AsmToken::Dot: { // . as a branch target
4353 // This was not a register so parse other operands that start with an
4354 // identifier (like labels) as expressions and create them as immediates.
4355 const MCExpr *IdVal;
4356 S = Parser.getTok().getLoc();
4357 if (getParser().ParseExpression(IdVal))
4359 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4360 Operands.push_back(ARMOperand::CreateImm(IdVal, S, E));
4363 case AsmToken::LBrac:
4364 return parseMemory(Operands);
4365 case AsmToken::LCurly:
4366 return parseRegisterList(Operands);
4367 case AsmToken::Dollar:
4368 case AsmToken::Hash: {
4369 // #42 -> immediate.
4370 // TODO: ":lower16:" and ":upper16:" modifiers after # before immediate
4371 S = Parser.getTok().getLoc();
4373 bool isNegative = Parser.getTok().is(AsmToken::Minus);
4374 const MCExpr *ImmVal;
4375 if (getParser().ParseExpression(ImmVal))
4377 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ImmVal);
4379 int32_t Val = CE->getValue();
4380 if (isNegative && Val == 0)
4381 ImmVal = MCConstantExpr::Create(INT32_MIN, getContext());
4383 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4384 Operands.push_back(ARMOperand::CreateImm(ImmVal, S, E));
4387 case AsmToken::Colon: {
4388 // ":lower16:" and ":upper16:" expression prefixes
4389 // FIXME: Check it's an expression prefix,
4390 // e.g. (FOO - :lower16:BAR) isn't legal.
4391 ARMMCExpr::VariantKind RefKind;
4392 if (parsePrefix(RefKind))
4395 const MCExpr *SubExprVal;
4396 if (getParser().ParseExpression(SubExprVal))
4399 const MCExpr *ExprVal = ARMMCExpr::Create(RefKind, SubExprVal,
4401 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4402 Operands.push_back(ARMOperand::CreateImm(ExprVal, S, E));
4408 // parsePrefix - Parse ARM 16-bit relocations expression prefix, i.e.
4409 // :lower16: and :upper16:.
4410 bool ARMAsmParser::parsePrefix(ARMMCExpr::VariantKind &RefKind) {
4411 RefKind = ARMMCExpr::VK_ARM_None;
4413 // :lower16: and :upper16: modifiers
4414 assert(getLexer().is(AsmToken::Colon) && "expected a :");
4415 Parser.Lex(); // Eat ':'
4417 if (getLexer().isNot(AsmToken::Identifier)) {
4418 Error(Parser.getTok().getLoc(), "expected prefix identifier in operand");
4422 StringRef IDVal = Parser.getTok().getIdentifier();
4423 if (IDVal == "lower16") {
4424 RefKind = ARMMCExpr::VK_ARM_LO16;
4425 } else if (IDVal == "upper16") {
4426 RefKind = ARMMCExpr::VK_ARM_HI16;
4428 Error(Parser.getTok().getLoc(), "unexpected prefix in operand");
4433 if (getLexer().isNot(AsmToken::Colon)) {
4434 Error(Parser.getTok().getLoc(), "unexpected token after prefix");
4437 Parser.Lex(); // Eat the last ':'
4441 /// \brief Given a mnemonic, split out possible predication code and carry
4442 /// setting letters to form a canonical mnemonic and flags.
4444 // FIXME: Would be nice to autogen this.
4445 // FIXME: This is a bit of a maze of special cases.
4446 StringRef ARMAsmParser::splitMnemonic(StringRef Mnemonic,
4447 unsigned &PredicationCode,
4449 unsigned &ProcessorIMod,
4450 StringRef &ITMask) {
4451 PredicationCode = ARMCC::AL;
4452 CarrySetting = false;
4455 // Ignore some mnemonics we know aren't predicated forms.
4457 // FIXME: Would be nice to autogen this.
4458 if ((Mnemonic == "movs" && isThumb()) ||
4459 Mnemonic == "teq" || Mnemonic == "vceq" || Mnemonic == "svc" ||
4460 Mnemonic == "mls" || Mnemonic == "smmls" || Mnemonic == "vcls" ||
4461 Mnemonic == "vmls" || Mnemonic == "vnmls" || Mnemonic == "vacge" ||
4462 Mnemonic == "vcge" || Mnemonic == "vclt" || Mnemonic == "vacgt" ||
4463 Mnemonic == "vcgt" || Mnemonic == "vcle" || Mnemonic == "smlal" ||
4464 Mnemonic == "umaal" || Mnemonic == "umlal" || Mnemonic == "vabal" ||
4465 Mnemonic == "vmlal" || Mnemonic == "vpadal" || Mnemonic == "vqdmlal" ||
4466 Mnemonic == "fmuls")
4469 // First, split out any predication code. Ignore mnemonics we know aren't
4470 // predicated but do have a carry-set and so weren't caught above.
4471 if (Mnemonic != "adcs" && Mnemonic != "bics" && Mnemonic != "movs" &&
4472 Mnemonic != "muls" && Mnemonic != "smlals" && Mnemonic != "smulls" &&
4473 Mnemonic != "umlals" && Mnemonic != "umulls" && Mnemonic != "lsls" &&
4474 Mnemonic != "sbcs" && Mnemonic != "rscs") {
4475 unsigned CC = StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2))
4476 .Case("eq", ARMCC::EQ)
4477 .Case("ne", ARMCC::NE)
4478 .Case("hs", ARMCC::HS)
4479 .Case("cs", ARMCC::HS)
4480 .Case("lo", ARMCC::LO)
4481 .Case("cc", ARMCC::LO)
4482 .Case("mi", ARMCC::MI)
4483 .Case("pl", ARMCC::PL)
4484 .Case("vs", ARMCC::VS)
4485 .Case("vc", ARMCC::VC)
4486 .Case("hi", ARMCC::HI)
4487 .Case("ls", ARMCC::LS)
4488 .Case("ge", ARMCC::GE)
4489 .Case("lt", ARMCC::LT)
4490 .Case("gt", ARMCC::GT)
4491 .Case("le", ARMCC::LE)
4492 .Case("al", ARMCC::AL)
4495 Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 2);
4496 PredicationCode = CC;
4500 // Next, determine if we have a carry setting bit. We explicitly ignore all
4501 // the instructions we know end in 's'.
4502 if (Mnemonic.endswith("s") &&
4503 !(Mnemonic == "cps" || Mnemonic == "mls" ||
4504 Mnemonic == "mrs" || Mnemonic == "smmls" || Mnemonic == "vabs" ||
4505 Mnemonic == "vcls" || Mnemonic == "vmls" || Mnemonic == "vmrs" ||
4506 Mnemonic == "vnmls" || Mnemonic == "vqabs" || Mnemonic == "vrecps" ||
4507 Mnemonic == "vrsqrts" || Mnemonic == "srs" || Mnemonic == "flds" ||
4508 Mnemonic == "fmrs" || Mnemonic == "fsqrts" || Mnemonic == "fsubs" ||
4509 Mnemonic == "fsts" || Mnemonic == "fcpys" || Mnemonic == "fdivs" ||
4510 Mnemonic == "fmuls" || Mnemonic == "fcmps" ||
4511 (Mnemonic == "movs" && isThumb()))) {
4512 Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 1);
4513 CarrySetting = true;
4516 // The "cps" instruction can have a interrupt mode operand which is glued into
4517 // the mnemonic. Check if this is the case, split it and parse the imod op
4518 if (Mnemonic.startswith("cps")) {
4519 // Split out any imod code.
4521 StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2, 2))
4522 .Case("ie", ARM_PROC::IE)
4523 .Case("id", ARM_PROC::ID)
4526 Mnemonic = Mnemonic.slice(0, Mnemonic.size()-2);
4527 ProcessorIMod = IMod;
4531 // The "it" instruction has the condition mask on the end of the mnemonic.
4532 if (Mnemonic.startswith("it")) {
4533 ITMask = Mnemonic.slice(2, Mnemonic.size());
4534 Mnemonic = Mnemonic.slice(0, 2);
4540 /// \brief Given a canonical mnemonic, determine if the instruction ever allows
4541 /// inclusion of carry set or predication code operands.
4543 // FIXME: It would be nice to autogen this.
4545 getMnemonicAcceptInfo(StringRef Mnemonic, bool &CanAcceptCarrySet,
4546 bool &CanAcceptPredicationCode) {
4547 if (Mnemonic == "and" || Mnemonic == "lsl" || Mnemonic == "lsr" ||
4548 Mnemonic == "rrx" || Mnemonic == "ror" || Mnemonic == "sub" ||
4549 Mnemonic == "add" || Mnemonic == "adc" ||
4550 Mnemonic == "mul" || Mnemonic == "bic" || Mnemonic == "asr" ||
4551 Mnemonic == "orr" || Mnemonic == "mvn" ||
4552 Mnemonic == "rsb" || Mnemonic == "rsc" || Mnemonic == "orn" ||
4553 Mnemonic == "sbc" || Mnemonic == "eor" || Mnemonic == "neg" ||
4554 (!isThumb() && (Mnemonic == "smull" || Mnemonic == "mov" ||
4555 Mnemonic == "mla" || Mnemonic == "smlal" ||
4556 Mnemonic == "umlal" || Mnemonic == "umull"))) {
4557 CanAcceptCarrySet = true;
4559 CanAcceptCarrySet = false;
4561 if (Mnemonic == "cbnz" || Mnemonic == "setend" || Mnemonic == "dmb" ||
4562 Mnemonic == "cps" || Mnemonic == "mcr2" || Mnemonic == "it" ||
4563 Mnemonic == "mcrr2" || Mnemonic == "cbz" || Mnemonic == "cdp2" ||
4564 Mnemonic == "trap" || Mnemonic == "mrc2" || Mnemonic == "mrrc2" ||
4565 Mnemonic == "dsb" || Mnemonic == "isb" || Mnemonic == "setend" ||
4566 (Mnemonic == "clrex" && !isThumb()) ||
4567 (Mnemonic == "nop" && isThumbOne()) ||
4568 ((Mnemonic == "pld" || Mnemonic == "pli" || Mnemonic == "pldw" ||
4569 Mnemonic == "ldc2" || Mnemonic == "ldc2l" ||
4570 Mnemonic == "stc2" || Mnemonic == "stc2l") && !isThumb()) ||
4571 ((Mnemonic.startswith("rfe") || Mnemonic.startswith("srs")) &&
4573 Mnemonic.startswith("cps") || (Mnemonic == "movs" && isThumbOne())) {
4574 CanAcceptPredicationCode = false;
4576 CanAcceptPredicationCode = true;
4579 if (Mnemonic == "bkpt" || Mnemonic == "mcr" || Mnemonic == "mcrr" ||
4580 Mnemonic == "mrc" || Mnemonic == "mrrc" || Mnemonic == "cdp")
4581 CanAcceptPredicationCode = false;
4585 bool ARMAsmParser::shouldOmitCCOutOperand(StringRef Mnemonic,
4586 SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4587 // FIXME: This is all horribly hacky. We really need a better way to deal
4588 // with optional operands like this in the matcher table.
4590 // The 'mov' mnemonic is special. One variant has a cc_out operand, while
4591 // another does not. Specifically, the MOVW instruction does not. So we
4592 // special case it here and remove the defaulted (non-setting) cc_out
4593 // operand if that's the instruction we're trying to match.
4595 // We do this as post-processing of the explicit operands rather than just
4596 // conditionally adding the cc_out in the first place because we need
4597 // to check the type of the parsed immediate operand.
4598 if (Mnemonic == "mov" && Operands.size() > 4 && !isThumb() &&
4599 !static_cast<ARMOperand*>(Operands[4])->isARMSOImm() &&
4600 static_cast<ARMOperand*>(Operands[4])->isImm0_65535Expr() &&
4601 static_cast<ARMOperand*>(Operands[1])->getReg() == 0)
4604 // Register-register 'add' for thumb does not have a cc_out operand
4605 // when there are only two register operands.
4606 if (isThumb() && Mnemonic == "add" && Operands.size() == 5 &&
4607 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4608 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4609 static_cast<ARMOperand*>(Operands[1])->getReg() == 0)
4611 // Register-register 'add' for thumb does not have a cc_out operand
4612 // when it's an ADD Rdm, SP, {Rdm|#imm0_255} instruction. We do
4613 // have to check the immediate range here since Thumb2 has a variant
4614 // that can handle a different range and has a cc_out operand.
4615 if (((isThumb() && Mnemonic == "add") ||
4616 (isThumbTwo() && Mnemonic == "sub")) &&
4617 Operands.size() == 6 &&
4618 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4619 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4620 static_cast<ARMOperand*>(Operands[4])->getReg() == ARM::SP &&
4621 static_cast<ARMOperand*>(Operands[1])->getReg() == 0 &&
4622 (static_cast<ARMOperand*>(Operands[5])->isReg() ||
4623 static_cast<ARMOperand*>(Operands[5])->isImm0_1020s4()))
4625 // For Thumb2, add/sub immediate does not have a cc_out operand for the
4626 // imm0_4095 variant. That's the least-preferred variant when
4627 // selecting via the generic "add" mnemonic, so to know that we
4628 // should remove the cc_out operand, we have to explicitly check that
4629 // it's not one of the other variants. Ugh.
4630 if (isThumbTwo() && (Mnemonic == "add" || Mnemonic == "sub") &&
4631 Operands.size() == 6 &&
4632 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4633 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4634 static_cast<ARMOperand*>(Operands[5])->isImm()) {
4635 // Nest conditions rather than one big 'if' statement for readability.
4637 // If either register is a high reg, it's either one of the SP
4638 // variants (handled above) or a 32-bit encoding, so we just
4639 // check against T3.
4640 if ((!isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) ||
4641 !isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg())) &&
4642 static_cast<ARMOperand*>(Operands[5])->isT2SOImm())
4644 // If both registers are low, we're in an IT block, and the immediate is
4645 // in range, we should use encoding T1 instead, which has a cc_out.
4647 isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) &&
4648 isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()) &&
4649 static_cast<ARMOperand*>(Operands[5])->isImm0_7())
4652 // Otherwise, we use encoding T4, which does not have a cc_out
4657 // The thumb2 multiply instruction doesn't have a CCOut register, so
4658 // if we have a "mul" mnemonic in Thumb mode, check if we'll be able to
4659 // use the 16-bit encoding or not.
4660 if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 6 &&
4661 static_cast<ARMOperand*>(Operands[1])->getReg() == 0 &&
4662 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4663 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4664 static_cast<ARMOperand*>(Operands[5])->isReg() &&
4665 // If the registers aren't low regs, the destination reg isn't the
4666 // same as one of the source regs, or the cc_out operand is zero
4667 // outside of an IT block, we have to use the 32-bit encoding, so
4668 // remove the cc_out operand.
4669 (!isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) ||
4670 !isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()) ||
4671 !isARMLowRegister(static_cast<ARMOperand*>(Operands[5])->getReg()) ||
4673 (static_cast<ARMOperand*>(Operands[3])->getReg() !=
4674 static_cast<ARMOperand*>(Operands[5])->getReg() &&
4675 static_cast<ARMOperand*>(Operands[3])->getReg() !=
4676 static_cast<ARMOperand*>(Operands[4])->getReg())))
4679 // Also check the 'mul' syntax variant that doesn't specify an explicit
4680 // destination register.
4681 if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 5 &&
4682 static_cast<ARMOperand*>(Operands[1])->getReg() == 0 &&
4683 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4684 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4685 // If the registers aren't low regs or the cc_out operand is zero
4686 // outside of an IT block, we have to use the 32-bit encoding, so
4687 // remove the cc_out operand.
4688 (!isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) ||
4689 !isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()) ||
4695 // Register-register 'add/sub' for thumb does not have a cc_out operand
4696 // when it's an ADD/SUB SP, #imm. Be lenient on count since there's also
4697 // the "add/sub SP, SP, #imm" version. If the follow-up operands aren't
4698 // right, this will result in better diagnostics (which operand is off)
4700 if (isThumb() && (Mnemonic == "add" || Mnemonic == "sub") &&
4701 (Operands.size() == 5 || Operands.size() == 6) &&
4702 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4703 static_cast<ARMOperand*>(Operands[3])->getReg() == ARM::SP &&
4704 static_cast<ARMOperand*>(Operands[1])->getReg() == 0)
4710 static bool isDataTypeToken(StringRef Tok) {
4711 return Tok == ".8" || Tok == ".16" || Tok == ".32" || Tok == ".64" ||
4712 Tok == ".i8" || Tok == ".i16" || Tok == ".i32" || Tok == ".i64" ||
4713 Tok == ".u8" || Tok == ".u16" || Tok == ".u32" || Tok == ".u64" ||
4714 Tok == ".s8" || Tok == ".s16" || Tok == ".s32" || Tok == ".s64" ||
4715 Tok == ".p8" || Tok == ".p16" || Tok == ".f32" || Tok == ".f64" ||
4716 Tok == ".f" || Tok == ".d";
4719 // FIXME: This bit should probably be handled via an explicit match class
4720 // in the .td files that matches the suffix instead of having it be
4721 // a literal string token the way it is now.
4722 static bool doesIgnoreDataTypeSuffix(StringRef Mnemonic, StringRef DT) {
4723 return Mnemonic.startswith("vldm") || Mnemonic.startswith("vstm");
4726 static void applyMnemonicAliases(StringRef &Mnemonic, unsigned Features);
4727 /// Parse an arm instruction mnemonic followed by its operands.
4728 bool ARMAsmParser::ParseInstruction(StringRef Name, SMLoc NameLoc,
4729 SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4730 // Apply mnemonic aliases before doing anything else, as the destination
4731 // mnemnonic may include suffices and we want to handle them normally.
4732 // The generic tblgen'erated code does this later, at the start of
4733 // MatchInstructionImpl(), but that's too late for aliases that include
4734 // any sort of suffix.
4735 unsigned AvailableFeatures = getAvailableFeatures();
4736 applyMnemonicAliases(Name, AvailableFeatures);
4738 // First check for the ARM-specific .req directive.
4739 if (Parser.getTok().is(AsmToken::Identifier) &&
4740 Parser.getTok().getIdentifier() == ".req") {
4741 parseDirectiveReq(Name, NameLoc);
4742 // We always return 'error' for this, as we're done with this
4743 // statement and don't need to match the 'instruction."
4747 // Create the leading tokens for the mnemonic, split by '.' characters.
4748 size_t Start = 0, Next = Name.find('.');
4749 StringRef Mnemonic = Name.slice(Start, Next);
4751 // Split out the predication code and carry setting flag from the mnemonic.
4752 unsigned PredicationCode;
4753 unsigned ProcessorIMod;
4756 Mnemonic = splitMnemonic(Mnemonic, PredicationCode, CarrySetting,
4757 ProcessorIMod, ITMask);
4759 // In Thumb1, only the branch (B) instruction can be predicated.
4760 if (isThumbOne() && PredicationCode != ARMCC::AL && Mnemonic != "b") {
4761 Parser.EatToEndOfStatement();
4762 return Error(NameLoc, "conditional execution not supported in Thumb1");
4765 Operands.push_back(ARMOperand::CreateToken(Mnemonic, NameLoc));
4767 // Handle the IT instruction ITMask. Convert it to a bitmask. This
4768 // is the mask as it will be for the IT encoding if the conditional
4769 // encoding has a '1' as it's bit0 (i.e. 't' ==> '1'). In the case
4770 // where the conditional bit0 is zero, the instruction post-processing
4771 // will adjust the mask accordingly.
4772 if (Mnemonic == "it") {
4773 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + 2);
4774 if (ITMask.size() > 3) {
4775 Parser.EatToEndOfStatement();
4776 return Error(Loc, "too many conditions on IT instruction");
4779 for (unsigned i = ITMask.size(); i != 0; --i) {
4780 char pos = ITMask[i - 1];
4781 if (pos != 't' && pos != 'e') {
4782 Parser.EatToEndOfStatement();
4783 return Error(Loc, "illegal IT block condition mask '" + ITMask + "'");
4786 if (ITMask[i - 1] == 't')
4789 Operands.push_back(ARMOperand::CreateITMask(Mask, Loc));
4792 // FIXME: This is all a pretty gross hack. We should automatically handle
4793 // optional operands like this via tblgen.
4795 // Next, add the CCOut and ConditionCode operands, if needed.
4797 // For mnemonics which can ever incorporate a carry setting bit or predication
4798 // code, our matching model involves us always generating CCOut and
4799 // ConditionCode operands to match the mnemonic "as written" and then we let
4800 // the matcher deal with finding the right instruction or generating an
4801 // appropriate error.
4802 bool CanAcceptCarrySet, CanAcceptPredicationCode;
4803 getMnemonicAcceptInfo(Mnemonic, CanAcceptCarrySet, CanAcceptPredicationCode);
4805 // If we had a carry-set on an instruction that can't do that, issue an
4807 if (!CanAcceptCarrySet && CarrySetting) {
4808 Parser.EatToEndOfStatement();
4809 return Error(NameLoc, "instruction '" + Mnemonic +
4810 "' can not set flags, but 's' suffix specified");
4812 // If we had a predication code on an instruction that can't do that, issue an
4814 if (!CanAcceptPredicationCode && PredicationCode != ARMCC::AL) {
4815 Parser.EatToEndOfStatement();
4816 return Error(NameLoc, "instruction '" + Mnemonic +
4817 "' is not predicable, but condition code specified");
4820 // Add the carry setting operand, if necessary.
4821 if (CanAcceptCarrySet) {
4822 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size());
4823 Operands.push_back(ARMOperand::CreateCCOut(CarrySetting ? ARM::CPSR : 0,
4827 // Add the predication code operand, if necessary.
4828 if (CanAcceptPredicationCode) {
4829 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size() +
4831 Operands.push_back(ARMOperand::CreateCondCode(
4832 ARMCC::CondCodes(PredicationCode), Loc));
4835 // Add the processor imod operand, if necessary.
4836 if (ProcessorIMod) {
4837 Operands.push_back(ARMOperand::CreateImm(
4838 MCConstantExpr::Create(ProcessorIMod, getContext()),
4842 // Add the remaining tokens in the mnemonic.
4843 while (Next != StringRef::npos) {
4845 Next = Name.find('.', Start + 1);
4846 StringRef ExtraToken = Name.slice(Start, Next);
4848 // Some NEON instructions have an optional datatype suffix that is
4849 // completely ignored. Check for that.
4850 if (isDataTypeToken(ExtraToken) &&
4851 doesIgnoreDataTypeSuffix(Mnemonic, ExtraToken))
4854 if (ExtraToken != ".n") {
4855 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Start);
4856 Operands.push_back(ARMOperand::CreateToken(ExtraToken, Loc));
4860 // Read the remaining operands.
4861 if (getLexer().isNot(AsmToken::EndOfStatement)) {
4862 // Read the first operand.
4863 if (parseOperand(Operands, Mnemonic)) {
4864 Parser.EatToEndOfStatement();
4868 while (getLexer().is(AsmToken::Comma)) {
4869 Parser.Lex(); // Eat the comma.
4871 // Parse and remember the operand.
4872 if (parseOperand(Operands, Mnemonic)) {
4873 Parser.EatToEndOfStatement();
4879 if (getLexer().isNot(AsmToken::EndOfStatement)) {
4880 SMLoc Loc = getLexer().getLoc();
4881 Parser.EatToEndOfStatement();
4882 return Error(Loc, "unexpected token in argument list");
4885 Parser.Lex(); // Consume the EndOfStatement
4887 // Some instructions, mostly Thumb, have forms for the same mnemonic that
4888 // do and don't have a cc_out optional-def operand. With some spot-checks
4889 // of the operand list, we can figure out which variant we're trying to
4890 // parse and adjust accordingly before actually matching. We shouldn't ever
4891 // try to remove a cc_out operand that was explicitly set on the the
4892 // mnemonic, of course (CarrySetting == true). Reason number #317 the
4893 // table driven matcher doesn't fit well with the ARM instruction set.
4894 if (!CarrySetting && shouldOmitCCOutOperand(Mnemonic, Operands)) {
4895 ARMOperand *Op = static_cast<ARMOperand*>(Operands[1]);
4896 Operands.erase(Operands.begin() + 1);
4900 // ARM mode 'blx' need special handling, as the register operand version
4901 // is predicable, but the label operand version is not. So, we can't rely
4902 // on the Mnemonic based checking to correctly figure out when to put
4903 // a k_CondCode operand in the list. If we're trying to match the label
4904 // version, remove the k_CondCode operand here.
4905 if (!isThumb() && Mnemonic == "blx" && Operands.size() == 3 &&
4906 static_cast<ARMOperand*>(Operands[2])->isImm()) {
4907 ARMOperand *Op = static_cast<ARMOperand*>(Operands[1]);
4908 Operands.erase(Operands.begin() + 1);
4912 // The vector-compare-to-zero instructions have a literal token "#0" at
4913 // the end that comes to here as an immediate operand. Convert it to a
4914 // token to play nicely with the matcher.
4915 if ((Mnemonic == "vceq" || Mnemonic == "vcge" || Mnemonic == "vcgt" ||
4916 Mnemonic == "vcle" || Mnemonic == "vclt") && Operands.size() == 6 &&
4917 static_cast<ARMOperand*>(Operands[5])->isImm()) {
4918 ARMOperand *Op = static_cast<ARMOperand*>(Operands[5]);
4919 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op->getImm());
4920 if (CE && CE->getValue() == 0) {
4921 Operands.erase(Operands.begin() + 5);
4922 Operands.push_back(ARMOperand::CreateToken("#0", Op->getStartLoc()));
4926 // VCMP{E} does the same thing, but with a different operand count.
4927 if ((Mnemonic == "vcmp" || Mnemonic == "vcmpe") && Operands.size() == 5 &&
4928 static_cast<ARMOperand*>(Operands[4])->isImm()) {
4929 ARMOperand *Op = static_cast<ARMOperand*>(Operands[4]);
4930 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op->getImm());
4931 if (CE && CE->getValue() == 0) {
4932 Operands.erase(Operands.begin() + 4);
4933 Operands.push_back(ARMOperand::CreateToken("#0", Op->getStartLoc()));
4937 // Similarly, the Thumb1 "RSB" instruction has a literal "#0" on the
4938 // end. Convert it to a token here. Take care not to convert those
4939 // that should hit the Thumb2 encoding.
4940 if (Mnemonic == "rsb" && isThumb() && Operands.size() == 6 &&
4941 static_cast<ARMOperand*>(Operands[3])->isReg() &&
4942 static_cast<ARMOperand*>(Operands[4])->isReg() &&
4943 static_cast<ARMOperand*>(Operands[5])->isImm()) {
4944 ARMOperand *Op = static_cast<ARMOperand*>(Operands[5]);
4945 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op->getImm());
4946 if (CE && CE->getValue() == 0 &&
4948 // The cc_out operand matches the IT block.
4949 ((inITBlock() != CarrySetting) &&
4950 // Neither register operand is a high register.
4951 (isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) &&
4952 isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()))))){
4953 Operands.erase(Operands.begin() + 5);
4954 Operands.push_back(ARMOperand::CreateToken("#0", Op->getStartLoc()));
4962 // Validate context-sensitive operand constraints.
4964 // return 'true' if register list contains non-low GPR registers,
4965 // 'false' otherwise. If Reg is in the register list or is HiReg, set
4966 // 'containsReg' to true.
4967 static bool checkLowRegisterList(MCInst Inst, unsigned OpNo, unsigned Reg,
4968 unsigned HiReg, bool &containsReg) {
4969 containsReg = false;
4970 for (unsigned i = OpNo; i < Inst.getNumOperands(); ++i) {
4971 unsigned OpReg = Inst.getOperand(i).getReg();
4974 // Anything other than a low register isn't legal here.
4975 if (!isARMLowRegister(OpReg) && (!HiReg || OpReg != HiReg))
4981 // Check if the specified regisgter is in the register list of the inst,
4982 // starting at the indicated operand number.
4983 static bool listContainsReg(MCInst &Inst, unsigned OpNo, unsigned Reg) {
4984 for (unsigned i = OpNo; i < Inst.getNumOperands(); ++i) {
4985 unsigned OpReg = Inst.getOperand(i).getReg();
4992 // FIXME: We would really prefer to have MCInstrInfo (the wrapper around
4993 // the ARMInsts array) instead. Getting that here requires awkward
4994 // API changes, though. Better way?
4996 extern const MCInstrDesc ARMInsts[];
4998 static const MCInstrDesc &getInstDesc(unsigned Opcode) {
4999 return ARMInsts[Opcode];
5002 // FIXME: We would really like to be able to tablegen'erate this.
5004 validateInstruction(MCInst &Inst,
5005 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
5006 const MCInstrDesc &MCID = getInstDesc(Inst.getOpcode());
5007 SMLoc Loc = Operands[0]->getStartLoc();
5008 // Check the IT block state first.
5009 // NOTE: In Thumb mode, the BKPT instruction has the interesting property of
5010 // being allowed in IT blocks, but not being predicable. It just always
5012 if (inITBlock() && Inst.getOpcode() != ARM::tBKPT) {
5014 if (ITState.FirstCond)
5015 ITState.FirstCond = false;
5017 bit = (ITState.Mask >> (5 - ITState.CurPosition)) & 1;
5018 // The instruction must be predicable.
5019 if (!MCID.isPredicable())
5020 return Error(Loc, "instructions in IT block must be predicable");
5021 unsigned Cond = Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm();
5022 unsigned ITCond = bit ? ITState.Cond :
5023 ARMCC::getOppositeCondition(ITState.Cond);
5024 if (Cond != ITCond) {
5025 // Find the condition code Operand to get its SMLoc information.
5027 for (unsigned i = 1; i < Operands.size(); ++i)
5028 if (static_cast<ARMOperand*>(Operands[i])->isCondCode())
5029 CondLoc = Operands[i]->getStartLoc();
5030 return Error(CondLoc, "incorrect condition in IT block; got '" +
5031 StringRef(ARMCondCodeToString(ARMCC::CondCodes(Cond))) +
5032 "', but expected '" +
5033 ARMCondCodeToString(ARMCC::CondCodes(ITCond)) + "'");
5035 // Check for non-'al' condition codes outside of the IT block.
5036 } else if (isThumbTwo() && MCID.isPredicable() &&
5037 Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm() !=
5038 ARMCC::AL && Inst.getOpcode() != ARM::tB &&
5039 Inst.getOpcode() != ARM::t2B)
5040 return Error(Loc, "predicated instructions must be in IT block");
5042 switch (Inst.getOpcode()) {
5045 case ARM::LDRD_POST:
5047 // Rt2 must be Rt + 1.
5048 unsigned Rt = getARMRegisterNumbering(Inst.getOperand(0).getReg());
5049 unsigned Rt2 = getARMRegisterNumbering(Inst.getOperand(1).getReg());
5051 return Error(Operands[3]->getStartLoc(),
5052 "destination operands must be sequential");
5056 // Rt2 must be Rt + 1.
5057 unsigned Rt = getARMRegisterNumbering(Inst.getOperand(0).getReg());
5058 unsigned Rt2 = getARMRegisterNumbering(Inst.getOperand(1).getReg());
5060 return Error(Operands[3]->getStartLoc(),
5061 "source operands must be sequential");
5065 case ARM::STRD_POST:
5067 // Rt2 must be Rt + 1.
5068 unsigned Rt = getARMRegisterNumbering(Inst.getOperand(1).getReg());
5069 unsigned Rt2 = getARMRegisterNumbering(Inst.getOperand(2).getReg());
5071 return Error(Operands[3]->getStartLoc(),
5072 "source operands must be sequential");
5077 // width must be in range [1, 32-lsb]
5078 unsigned lsb = Inst.getOperand(2).getImm();
5079 unsigned widthm1 = Inst.getOperand(3).getImm();
5080 if (widthm1 >= 32 - lsb)
5081 return Error(Operands[5]->getStartLoc(),
5082 "bitfield width must be in range [1,32-lsb]");
5086 // If we're parsing Thumb2, the .w variant is available and handles
5087 // most cases that are normally illegal for a Thumb1 LDM
5088 // instruction. We'll make the transformation in processInstruction()
5091 // Thumb LDM instructions are writeback iff the base register is not
5092 // in the register list.
5093 unsigned Rn = Inst.getOperand(0).getReg();
5094 bool hasWritebackToken =
5095 (static_cast<ARMOperand*>(Operands[3])->isToken() &&
5096 static_cast<ARMOperand*>(Operands[3])->getToken() == "!");
5097 bool listContainsBase;
5098 if (checkLowRegisterList(Inst, 3, Rn, 0, listContainsBase) && !isThumbTwo())
5099 return Error(Operands[3 + hasWritebackToken]->getStartLoc(),
5100 "registers must be in range r0-r7");
5101 // If we should have writeback, then there should be a '!' token.
5102 if (!listContainsBase && !hasWritebackToken && !isThumbTwo())
5103 return Error(Operands[2]->getStartLoc(),
5104 "writeback operator '!' expected");
5105 // If we should not have writeback, there must not be a '!'. This is
5106 // true even for the 32-bit wide encodings.
5107 if (listContainsBase && hasWritebackToken)
5108 return Error(Operands[3]->getStartLoc(),
5109 "writeback operator '!' not allowed when base register "
5110 "in register list");
5114 case ARM::t2LDMIA_UPD: {
5115 if (listContainsReg(Inst, 3, Inst.getOperand(0).getReg()))
5116 return Error(Operands[4]->getStartLoc(),
5117 "writeback operator '!' not allowed when base register "
5118 "in register list");
5121 // Like for ldm/stm, push and pop have hi-reg handling version in Thumb2,
5122 // so only issue a diagnostic for thumb1. The instructions will be
5123 // switched to the t2 encodings in processInstruction() if necessary.
5125 bool listContainsBase;
5126 if (checkLowRegisterList(Inst, 2, 0, ARM::PC, listContainsBase) &&
5128 return Error(Operands[2]->getStartLoc(),
5129 "registers must be in range r0-r7 or pc");
5133 bool listContainsBase;
5134 if (checkLowRegisterList(Inst, 2, 0, ARM::LR, listContainsBase) &&
5136 return Error(Operands[2]->getStartLoc(),
5137 "registers must be in range r0-r7 or lr");
5140 case ARM::tSTMIA_UPD: {
5141 bool listContainsBase;
5142 if (checkLowRegisterList(Inst, 4, 0, 0, listContainsBase) && !isThumbTwo())
5143 return Error(Operands[4]->getStartLoc(),
5144 "registers must be in range r0-r7");
5152 static unsigned getRealVSTLNOpcode(unsigned Opc, unsigned &Spacing) {
5154 default: assert(0 && "unexpected opcode!");
5156 case ARM::VST1LNdWB_fixed_Asm_8: case ARM::VST1LNdWB_fixed_Asm_P8:
5157 case ARM::VST1LNdWB_fixed_Asm_I8: case ARM::VST1LNdWB_fixed_Asm_S8:
5158 case ARM::VST1LNdWB_fixed_Asm_U8:
5160 return ARM::VST1LNd8_UPD;
5161 case ARM::VST1LNdWB_fixed_Asm_16: case ARM::VST1LNdWB_fixed_Asm_P16:
5162 case ARM::VST1LNdWB_fixed_Asm_I16: case ARM::VST1LNdWB_fixed_Asm_S16:
5163 case ARM::VST1LNdWB_fixed_Asm_U16:
5165 return ARM::VST1LNd16_UPD;
5166 case ARM::VST1LNdWB_fixed_Asm_32: case ARM::VST1LNdWB_fixed_Asm_F:
5167 case ARM::VST1LNdWB_fixed_Asm_F32: case ARM::VST1LNdWB_fixed_Asm_I32:
5168 case ARM::VST1LNdWB_fixed_Asm_S32: case ARM::VST1LNdWB_fixed_Asm_U32:
5170 return ARM::VST1LNd32_UPD;
5171 case ARM::VST1LNdWB_register_Asm_8: case ARM::VST1LNdWB_register_Asm_P8:
5172 case ARM::VST1LNdWB_register_Asm_I8: case ARM::VST1LNdWB_register_Asm_S8:
5173 case ARM::VST1LNdWB_register_Asm_U8:
5175 return ARM::VST1LNd8_UPD;
5176 case ARM::VST1LNdWB_register_Asm_16: case ARM::VST1LNdWB_register_Asm_P16:
5177 case ARM::VST1LNdWB_register_Asm_I16: case ARM::VST1LNdWB_register_Asm_S16:
5178 case ARM::VST1LNdWB_register_Asm_U16:
5180 return ARM::VST1LNd16_UPD;
5181 case ARM::VST1LNdWB_register_Asm_32: case ARM::VST1LNdWB_register_Asm_F:
5182 case ARM::VST1LNdWB_register_Asm_F32: case ARM::VST1LNdWB_register_Asm_I32:
5183 case ARM::VST1LNdWB_register_Asm_S32: case ARM::VST1LNdWB_register_Asm_U32:
5185 return ARM::VST1LNd32_UPD;
5186 case ARM::VST1LNdAsm_8: case ARM::VST1LNdAsm_P8:
5187 case ARM::VST1LNdAsm_I8: case ARM::VST1LNdAsm_S8:
5188 case ARM::VST1LNdAsm_U8:
5190 return ARM::VST1LNd8;
5191 case ARM::VST1LNdAsm_16: case ARM::VST1LNdAsm_P16:
5192 case ARM::VST1LNdAsm_I16: case ARM::VST1LNdAsm_S16:
5193 case ARM::VST1LNdAsm_U16:
5195 return ARM::VST1LNd16;
5196 case ARM::VST1LNdAsm_32: case ARM::VST1LNdAsm_F:
5197 case ARM::VST1LNdAsm_F32: case ARM::VST1LNdAsm_I32:
5198 case ARM::VST1LNdAsm_S32: case ARM::VST1LNdAsm_U32:
5200 return ARM::VST1LNd32;
5203 case ARM::VST2LNdWB_fixed_Asm_8: case ARM::VST2LNdWB_fixed_Asm_P8:
5204 case ARM::VST2LNdWB_fixed_Asm_I8: case ARM::VST2LNdWB_fixed_Asm_S8:
5205 case ARM::VST2LNdWB_fixed_Asm_U8:
5207 return ARM::VST2LNd8_UPD;
5208 case ARM::VST2LNdWB_fixed_Asm_16: case ARM::VST2LNdWB_fixed_Asm_P16:
5209 case ARM::VST2LNdWB_fixed_Asm_I16: case ARM::VST2LNdWB_fixed_Asm_S16:
5210 case ARM::VST2LNdWB_fixed_Asm_U16:
5212 return ARM::VST2LNd16_UPD;
5213 case ARM::VST2LNdWB_fixed_Asm_32: case ARM::VST2LNdWB_fixed_Asm_F:
5214 case ARM::VST2LNdWB_fixed_Asm_F32: case ARM::VST2LNdWB_fixed_Asm_I32:
5215 case ARM::VST2LNdWB_fixed_Asm_S32: case ARM::VST2LNdWB_fixed_Asm_U32:
5217 return ARM::VST2LNd32_UPD;
5218 case ARM::VST2LNqWB_fixed_Asm_16: case ARM::VST2LNqWB_fixed_Asm_P16:
5219 case ARM::VST2LNqWB_fixed_Asm_I16: case ARM::VST2LNqWB_fixed_Asm_S16:
5220 case ARM::VST2LNqWB_fixed_Asm_U16:
5222 return ARM::VST2LNq16_UPD;
5223 case ARM::VST2LNqWB_fixed_Asm_32: case ARM::VST2LNqWB_fixed_Asm_F:
5224 case ARM::VST2LNqWB_fixed_Asm_F32: case ARM::VST2LNqWB_fixed_Asm_I32:
5225 case ARM::VST2LNqWB_fixed_Asm_S32: case ARM::VST2LNqWB_fixed_Asm_U32:
5227 return ARM::VST2LNq32_UPD;
5229 case ARM::VST2LNdWB_register_Asm_8: case ARM::VST2LNdWB_register_Asm_P8:
5230 case ARM::VST2LNdWB_register_Asm_I8: case ARM::VST2LNdWB_register_Asm_S8:
5231 case ARM::VST2LNdWB_register_Asm_U8:
5233 return ARM::VST2LNd8_UPD;
5234 case ARM::VST2LNdWB_register_Asm_16: case ARM::VST2LNdWB_register_Asm_P16:
5235 case ARM::VST2LNdWB_register_Asm_I16: case ARM::VST2LNdWB_register_Asm_S16:
5236 case ARM::VST2LNdWB_register_Asm_U16:
5238 return ARM::VST2LNd16_UPD;
5239 case ARM::VST2LNdWB_register_Asm_32: case ARM::VST2LNdWB_register_Asm_F:
5240 case ARM::VST2LNdWB_register_Asm_F32: case ARM::VST2LNdWB_register_Asm_I32:
5241 case ARM::VST2LNdWB_register_Asm_S32: case ARM::VST2LNdWB_register_Asm_U32:
5243 return ARM::VST2LNd32_UPD;
5244 case ARM::VST2LNqWB_register_Asm_16: case ARM::VST2LNqWB_register_Asm_P16:
5245 case ARM::VST2LNqWB_register_Asm_I16: case ARM::VST2LNqWB_register_Asm_S16:
5246 case ARM::VST2LNqWB_register_Asm_U16:
5248 return ARM::VST2LNq16_UPD;
5249 case ARM::VST2LNqWB_register_Asm_32: case ARM::VST2LNqWB_register_Asm_F:
5250 case ARM::VST2LNqWB_register_Asm_F32: case ARM::VST2LNqWB_register_Asm_I32:
5251 case ARM::VST2LNqWB_register_Asm_S32: case ARM::VST2LNqWB_register_Asm_U32:
5253 return ARM::VST2LNq32_UPD;
5255 case ARM::VST2LNdAsm_8: case ARM::VST2LNdAsm_P8:
5256 case ARM::VST2LNdAsm_I8: case ARM::VST2LNdAsm_S8:
5257 case ARM::VST2LNdAsm_U8:
5259 return ARM::VST2LNd8;
5260 case ARM::VST2LNdAsm_16: case ARM::VST2LNdAsm_P16:
5261 case ARM::VST2LNdAsm_I16: case ARM::VST2LNdAsm_S16:
5262 case ARM::VST2LNdAsm_U16:
5264 return ARM::VST2LNd16;
5265 case ARM::VST2LNdAsm_32: case ARM::VST2LNdAsm_F:
5266 case ARM::VST2LNdAsm_F32: case ARM::VST2LNdAsm_I32:
5267 case ARM::VST2LNdAsm_S32: case ARM::VST2LNdAsm_U32:
5269 return ARM::VST2LNd32;
5270 case ARM::VST2LNqAsm_16: case ARM::VST2LNqAsm_P16:
5271 case ARM::VST2LNqAsm_I16: case ARM::VST2LNqAsm_S16:
5272 case ARM::VST2LNqAsm_U16:
5274 return ARM::VST2LNq16;
5275 case ARM::VST2LNqAsm_32: case ARM::VST2LNqAsm_F:
5276 case ARM::VST2LNqAsm_F32: case ARM::VST2LNqAsm_I32:
5277 case ARM::VST2LNqAsm_S32: case ARM::VST2LNqAsm_U32:
5279 return ARM::VST2LNq32;
5283 static unsigned getRealVLDLNOpcode(unsigned Opc, unsigned &Spacing) {
5285 default: assert(0 && "unexpected opcode!");
5287 case ARM::VLD1LNdWB_fixed_Asm_8: case ARM::VLD1LNdWB_fixed_Asm_P8:
5288 case ARM::VLD1LNdWB_fixed_Asm_I8: case ARM::VLD1LNdWB_fixed_Asm_S8:
5289 case ARM::VLD1LNdWB_fixed_Asm_U8:
5291 return ARM::VLD1LNd8_UPD;
5292 case ARM::VLD1LNdWB_fixed_Asm_16: case ARM::VLD1LNdWB_fixed_Asm_P16:
5293 case ARM::VLD1LNdWB_fixed_Asm_I16: case ARM::VLD1LNdWB_fixed_Asm_S16:
5294 case ARM::VLD1LNdWB_fixed_Asm_U16:
5296 return ARM::VLD1LNd16_UPD;
5297 case ARM::VLD1LNdWB_fixed_Asm_32: case ARM::VLD1LNdWB_fixed_Asm_F:
5298 case ARM::VLD1LNdWB_fixed_Asm_F32: case ARM::VLD1LNdWB_fixed_Asm_I32:
5299 case ARM::VLD1LNdWB_fixed_Asm_S32: case ARM::VLD1LNdWB_fixed_Asm_U32:
5301 return ARM::VLD1LNd32_UPD;
5302 case ARM::VLD1LNdWB_register_Asm_8: case ARM::VLD1LNdWB_register_Asm_P8:
5303 case ARM::VLD1LNdWB_register_Asm_I8: case ARM::VLD1LNdWB_register_Asm_S8:
5304 case ARM::VLD1LNdWB_register_Asm_U8:
5306 return ARM::VLD1LNd8_UPD;
5307 case ARM::VLD1LNdWB_register_Asm_16: case ARM::VLD1LNdWB_register_Asm_P16:
5308 case ARM::VLD1LNdWB_register_Asm_I16: case ARM::VLD1LNdWB_register_Asm_S16:
5309 case ARM::VLD1LNdWB_register_Asm_U16:
5311 return ARM::VLD1LNd16_UPD;
5312 case ARM::VLD1LNdWB_register_Asm_32: case ARM::VLD1LNdWB_register_Asm_F:
5313 case ARM::VLD1LNdWB_register_Asm_F32: case ARM::VLD1LNdWB_register_Asm_I32:
5314 case ARM::VLD1LNdWB_register_Asm_S32: case ARM::VLD1LNdWB_register_Asm_U32:
5316 return ARM::VLD1LNd32_UPD;
5317 case ARM::VLD1LNdAsm_8: case ARM::VLD1LNdAsm_P8:
5318 case ARM::VLD1LNdAsm_I8: case ARM::VLD1LNdAsm_S8:
5319 case ARM::VLD1LNdAsm_U8:
5321 return ARM::VLD1LNd8;
5322 case ARM::VLD1LNdAsm_16: case ARM::VLD1LNdAsm_P16:
5323 case ARM::VLD1LNdAsm_I16: case ARM::VLD1LNdAsm_S16:
5324 case ARM::VLD1LNdAsm_U16:
5326 return ARM::VLD1LNd16;
5327 case ARM::VLD1LNdAsm_32: case ARM::VLD1LNdAsm_F:
5328 case ARM::VLD1LNdAsm_F32: case ARM::VLD1LNdAsm_I32:
5329 case ARM::VLD1LNdAsm_S32: case ARM::VLD1LNdAsm_U32:
5331 return ARM::VLD1LNd32;
5334 case ARM::VLD2LNdWB_fixed_Asm_8: case ARM::VLD2LNdWB_fixed_Asm_P8:
5335 case ARM::VLD2LNdWB_fixed_Asm_I8: case ARM::VLD2LNdWB_fixed_Asm_S8:
5336 case ARM::VLD2LNdWB_fixed_Asm_U8:
5338 return ARM::VLD2LNd8_UPD;
5339 case ARM::VLD2LNdWB_fixed_Asm_16: case ARM::VLD2LNdWB_fixed_Asm_P16:
5340 case ARM::VLD2LNdWB_fixed_Asm_I16: case ARM::VLD2LNdWB_fixed_Asm_S16:
5341 case ARM::VLD2LNdWB_fixed_Asm_U16:
5343 return ARM::VLD2LNd16_UPD;
5344 case ARM::VLD2LNdWB_fixed_Asm_32: case ARM::VLD2LNdWB_fixed_Asm_F:
5345 case ARM::VLD2LNdWB_fixed_Asm_F32: case ARM::VLD2LNdWB_fixed_Asm_I32:
5346 case ARM::VLD2LNdWB_fixed_Asm_S32: case ARM::VLD2LNdWB_fixed_Asm_U32:
5348 return ARM::VLD2LNd32_UPD;
5349 case ARM::VLD2LNqWB_fixed_Asm_16: case ARM::VLD2LNqWB_fixed_Asm_P16:
5350 case ARM::VLD2LNqWB_fixed_Asm_I16: case ARM::VLD2LNqWB_fixed_Asm_S16:
5351 case ARM::VLD2LNqWB_fixed_Asm_U16:
5353 return ARM::VLD2LNq16_UPD;
5354 case ARM::VLD2LNqWB_fixed_Asm_32: case ARM::VLD2LNqWB_fixed_Asm_F:
5355 case ARM::VLD2LNqWB_fixed_Asm_F32: case ARM::VLD2LNqWB_fixed_Asm_I32:
5356 case ARM::VLD2LNqWB_fixed_Asm_S32: case ARM::VLD2LNqWB_fixed_Asm_U32:
5358 return ARM::VLD2LNq32_UPD;
5359 case ARM::VLD2LNdWB_register_Asm_8: case ARM::VLD2LNdWB_register_Asm_P8:
5360 case ARM::VLD2LNdWB_register_Asm_I8: case ARM::VLD2LNdWB_register_Asm_S8:
5361 case ARM::VLD2LNdWB_register_Asm_U8:
5363 return ARM::VLD2LNd8_UPD;
5364 case ARM::VLD2LNdWB_register_Asm_16: case ARM::VLD2LNdWB_register_Asm_P16:
5365 case ARM::VLD2LNdWB_register_Asm_I16: case ARM::VLD2LNdWB_register_Asm_S16:
5366 case ARM::VLD2LNdWB_register_Asm_U16:
5368 return ARM::VLD2LNd16_UPD;
5369 case ARM::VLD2LNdWB_register_Asm_32: case ARM::VLD2LNdWB_register_Asm_F:
5370 case ARM::VLD2LNdWB_register_Asm_F32: case ARM::VLD2LNdWB_register_Asm_I32:
5371 case ARM::VLD2LNdWB_register_Asm_S32: case ARM::VLD2LNdWB_register_Asm_U32:
5373 return ARM::VLD2LNd32_UPD;
5374 case ARM::VLD2LNqWB_register_Asm_16: case ARM::VLD2LNqWB_register_Asm_P16:
5375 case ARM::VLD2LNqWB_register_Asm_I16: case ARM::VLD2LNqWB_register_Asm_S16:
5376 case ARM::VLD2LNqWB_register_Asm_U16:
5378 return ARM::VLD2LNq16_UPD;
5379 case ARM::VLD2LNqWB_register_Asm_32: case ARM::VLD2LNqWB_register_Asm_F:
5380 case ARM::VLD2LNqWB_register_Asm_F32: case ARM::VLD2LNqWB_register_Asm_I32:
5381 case ARM::VLD2LNqWB_register_Asm_S32: case ARM::VLD2LNqWB_register_Asm_U32:
5383 return ARM::VLD2LNq32_UPD;
5384 case ARM::VLD2LNdAsm_8: case ARM::VLD2LNdAsm_P8:
5385 case ARM::VLD2LNdAsm_I8: case ARM::VLD2LNdAsm_S8:
5386 case ARM::VLD2LNdAsm_U8:
5388 return ARM::VLD2LNd8;
5389 case ARM::VLD2LNdAsm_16: case ARM::VLD2LNdAsm_P16:
5390 case ARM::VLD2LNdAsm_I16: case ARM::VLD2LNdAsm_S16:
5391 case ARM::VLD2LNdAsm_U16:
5393 return ARM::VLD2LNd16;
5394 case ARM::VLD2LNdAsm_32: case ARM::VLD2LNdAsm_F:
5395 case ARM::VLD2LNdAsm_F32: case ARM::VLD2LNdAsm_I32:
5396 case ARM::VLD2LNdAsm_S32: case ARM::VLD2LNdAsm_U32:
5398 return ARM::VLD2LNd32;
5399 case ARM::VLD2LNqAsm_16: case ARM::VLD2LNqAsm_P16:
5400 case ARM::VLD2LNqAsm_I16: case ARM::VLD2LNqAsm_S16:
5401 case ARM::VLD2LNqAsm_U16:
5403 return ARM::VLD2LNq16;
5404 case ARM::VLD2LNqAsm_32: case ARM::VLD2LNqAsm_F:
5405 case ARM::VLD2LNqAsm_F32: case ARM::VLD2LNqAsm_I32:
5406 case ARM::VLD2LNqAsm_S32: case ARM::VLD2LNqAsm_U32:
5408 return ARM::VLD2LNq32;
5413 processInstruction(MCInst &Inst,
5414 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
5415 switch (Inst.getOpcode()) {
5416 // Aliases for alternate PC+imm syntax of LDR instructions.
5417 case ARM::t2LDRpcrel:
5418 Inst.setOpcode(ARM::t2LDRpci);
5420 case ARM::t2LDRBpcrel:
5421 Inst.setOpcode(ARM::t2LDRBpci);
5423 case ARM::t2LDRHpcrel:
5424 Inst.setOpcode(ARM::t2LDRHpci);
5426 case ARM::t2LDRSBpcrel:
5427 Inst.setOpcode(ARM::t2LDRSBpci);
5429 case ARM::t2LDRSHpcrel:
5430 Inst.setOpcode(ARM::t2LDRSHpci);
5432 // Handle NEON VST complex aliases.
5433 case ARM::VST1LNdWB_register_Asm_8: case ARM::VST1LNdWB_register_Asm_P8:
5434 case ARM::VST1LNdWB_register_Asm_I8: case ARM::VST1LNdWB_register_Asm_S8:
5435 case ARM::VST1LNdWB_register_Asm_U8: case ARM::VST1LNdWB_register_Asm_16:
5436 case ARM::VST1LNdWB_register_Asm_P16: case ARM::VST1LNdWB_register_Asm_I16:
5437 case ARM::VST1LNdWB_register_Asm_S16: case ARM::VST1LNdWB_register_Asm_U16:
5438 case ARM::VST1LNdWB_register_Asm_32: case ARM::VST1LNdWB_register_Asm_F:
5439 case ARM::VST1LNdWB_register_Asm_F32: case ARM::VST1LNdWB_register_Asm_I32:
5440 case ARM::VST1LNdWB_register_Asm_S32: case ARM::VST1LNdWB_register_Asm_U32: {
5442 // Shuffle the operands around so the lane index operand is in the
5445 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5446 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5447 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5448 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5449 TmpInst.addOperand(Inst.getOperand(4)); // Rm
5450 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5451 TmpInst.addOperand(Inst.getOperand(1)); // lane
5452 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
5453 TmpInst.addOperand(Inst.getOperand(6));
5458 case ARM::VST2LNdWB_register_Asm_8: case ARM::VST2LNdWB_register_Asm_P8:
5459 case ARM::VST2LNdWB_register_Asm_I8: case ARM::VST2LNdWB_register_Asm_S8:
5460 case ARM::VST2LNdWB_register_Asm_U8: case ARM::VST2LNdWB_register_Asm_16:
5461 case ARM::VST2LNdWB_register_Asm_P16: case ARM::VST2LNdWB_register_Asm_I16:
5462 case ARM::VST2LNdWB_register_Asm_S16: case ARM::VST2LNdWB_register_Asm_U16:
5463 case ARM::VST2LNdWB_register_Asm_32: case ARM::VST2LNdWB_register_Asm_F:
5464 case ARM::VST2LNdWB_register_Asm_F32: case ARM::VST2LNdWB_register_Asm_I32:
5465 case ARM::VST2LNdWB_register_Asm_S32: case ARM::VST2LNdWB_register_Asm_U32:
5466 case ARM::VST2LNqWB_register_Asm_16: case ARM::VST2LNqWB_register_Asm_P16:
5467 case ARM::VST2LNqWB_register_Asm_I16: case ARM::VST2LNqWB_register_Asm_S16:
5468 case ARM::VST2LNqWB_register_Asm_U16: case ARM::VST2LNqWB_register_Asm_32:
5469 case ARM::VST2LNqWB_register_Asm_F: case ARM::VST2LNqWB_register_Asm_F32:
5470 case ARM::VST2LNqWB_register_Asm_I32: case ARM::VST2LNqWB_register_Asm_S32:
5471 case ARM::VST2LNqWB_register_Asm_U32: {
5473 // Shuffle the operands around so the lane index operand is in the
5476 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5477 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5478 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5479 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5480 TmpInst.addOperand(Inst.getOperand(4)); // Rm
5481 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5482 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5484 TmpInst.addOperand(Inst.getOperand(1)); // lane
5485 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
5486 TmpInst.addOperand(Inst.getOperand(6));
5490 case ARM::VST1LNdWB_fixed_Asm_8: case ARM::VST1LNdWB_fixed_Asm_P8:
5491 case ARM::VST1LNdWB_fixed_Asm_I8: case ARM::VST1LNdWB_fixed_Asm_S8:
5492 case ARM::VST1LNdWB_fixed_Asm_U8: case ARM::VST1LNdWB_fixed_Asm_16:
5493 case ARM::VST1LNdWB_fixed_Asm_P16: case ARM::VST1LNdWB_fixed_Asm_I16:
5494 case ARM::VST1LNdWB_fixed_Asm_S16: case ARM::VST1LNdWB_fixed_Asm_U16:
5495 case ARM::VST1LNdWB_fixed_Asm_32: case ARM::VST1LNdWB_fixed_Asm_F:
5496 case ARM::VST1LNdWB_fixed_Asm_F32: case ARM::VST1LNdWB_fixed_Asm_I32:
5497 case ARM::VST1LNdWB_fixed_Asm_S32: case ARM::VST1LNdWB_fixed_Asm_U32: {
5499 // Shuffle the operands around so the lane index operand is in the
5502 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5503 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5504 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5505 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5506 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
5507 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5508 TmpInst.addOperand(Inst.getOperand(1)); // lane
5509 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5510 TmpInst.addOperand(Inst.getOperand(5));
5515 case ARM::VST2LNdWB_fixed_Asm_8: case ARM::VST2LNdWB_fixed_Asm_P8:
5516 case ARM::VST2LNdWB_fixed_Asm_I8: case ARM::VST2LNdWB_fixed_Asm_S8:
5517 case ARM::VST2LNdWB_fixed_Asm_U8: case ARM::VST2LNdWB_fixed_Asm_16:
5518 case ARM::VST2LNdWB_fixed_Asm_P16: case ARM::VST2LNdWB_fixed_Asm_I16:
5519 case ARM::VST2LNdWB_fixed_Asm_S16: case ARM::VST2LNdWB_fixed_Asm_U16:
5520 case ARM::VST2LNdWB_fixed_Asm_32: case ARM::VST2LNdWB_fixed_Asm_F:
5521 case ARM::VST2LNdWB_fixed_Asm_F32: case ARM::VST2LNdWB_fixed_Asm_I32:
5522 case ARM::VST2LNdWB_fixed_Asm_S32: case ARM::VST2LNdWB_fixed_Asm_U32:
5523 case ARM::VST2LNqWB_fixed_Asm_16: case ARM::VST2LNqWB_fixed_Asm_P16:
5524 case ARM::VST2LNqWB_fixed_Asm_I16: case ARM::VST2LNqWB_fixed_Asm_S16:
5525 case ARM::VST2LNqWB_fixed_Asm_U16: case ARM::VST2LNqWB_fixed_Asm_32:
5526 case ARM::VST2LNqWB_fixed_Asm_F: case ARM::VST2LNqWB_fixed_Asm_F32:
5527 case ARM::VST2LNqWB_fixed_Asm_I32: case ARM::VST2LNqWB_fixed_Asm_S32:
5528 case ARM::VST2LNqWB_fixed_Asm_U32: {
5530 // Shuffle the operands around so the lane index operand is in the
5533 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5534 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5535 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5536 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5537 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
5538 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5539 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5541 TmpInst.addOperand(Inst.getOperand(1)); // lane
5542 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5543 TmpInst.addOperand(Inst.getOperand(5));
5547 case ARM::VST1LNdAsm_8: case ARM::VST1LNdAsm_P8: case ARM::VST1LNdAsm_I8:
5548 case ARM::VST1LNdAsm_S8: case ARM::VST1LNdAsm_U8: case ARM::VST1LNdAsm_16:
5549 case ARM::VST1LNdAsm_P16: case ARM::VST1LNdAsm_I16: case ARM::VST1LNdAsm_S16:
5550 case ARM::VST1LNdAsm_U16: case ARM::VST1LNdAsm_32: case ARM::VST1LNdAsm_F:
5551 case ARM::VST1LNdAsm_F32: case ARM::VST1LNdAsm_I32: case ARM::VST1LNdAsm_S32:
5552 case ARM::VST1LNdAsm_U32: {
5554 // Shuffle the operands around so the lane index operand is in the
5557 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5558 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5559 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5560 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5561 TmpInst.addOperand(Inst.getOperand(1)); // lane
5562 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5563 TmpInst.addOperand(Inst.getOperand(5));
5568 case ARM::VST2LNdAsm_8: case ARM::VST2LNdAsm_P8: case ARM::VST2LNdAsm_I8:
5569 case ARM::VST2LNdAsm_S8: case ARM::VST2LNdAsm_U8: case ARM::VST2LNdAsm_16:
5570 case ARM::VST2LNdAsm_P16: case ARM::VST2LNdAsm_I16: case ARM::VST2LNdAsm_S16:
5571 case ARM::VST2LNdAsm_U16: case ARM::VST2LNdAsm_32: case ARM::VST2LNdAsm_F:
5572 case ARM::VST2LNdAsm_F32: case ARM::VST2LNdAsm_I32: case ARM::VST2LNdAsm_S32:
5573 case ARM::VST2LNdAsm_U32: case ARM::VST2LNqAsm_16: case ARM::VST2LNqAsm_P16:
5574 case ARM::VST2LNqAsm_I16: case ARM::VST2LNqAsm_S16: case ARM::VST2LNqAsm_U16:
5575 case ARM::VST2LNqAsm_32: case ARM::VST2LNqAsm_F: case ARM::VST2LNqAsm_F32:
5576 case ARM::VST2LNqAsm_I32: case ARM::VST2LNqAsm_S32: case ARM::VST2LNqAsm_U32:{
5578 // Shuffle the operands around so the lane index operand is in the
5581 TmpInst.setOpcode(getRealVSTLNOpcode(Inst.getOpcode(), Spacing));
5582 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5583 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5584 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5585 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5587 TmpInst.addOperand(Inst.getOperand(1)); // lane
5588 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5589 TmpInst.addOperand(Inst.getOperand(5));
5593 // Handle NEON VLD complex aliases.
5594 case ARM::VLD1LNdWB_register_Asm_8: case ARM::VLD1LNdWB_register_Asm_P8:
5595 case ARM::VLD1LNdWB_register_Asm_I8: case ARM::VLD1LNdWB_register_Asm_S8:
5596 case ARM::VLD1LNdWB_register_Asm_U8: case ARM::VLD1LNdWB_register_Asm_16:
5597 case ARM::VLD1LNdWB_register_Asm_P16: case ARM::VLD1LNdWB_register_Asm_I16:
5598 case ARM::VLD1LNdWB_register_Asm_S16: case ARM::VLD1LNdWB_register_Asm_U16:
5599 case ARM::VLD1LNdWB_register_Asm_32: case ARM::VLD1LNdWB_register_Asm_F:
5600 case ARM::VLD1LNdWB_register_Asm_F32: case ARM::VLD1LNdWB_register_Asm_I32:
5601 case ARM::VLD1LNdWB_register_Asm_S32: case ARM::VLD1LNdWB_register_Asm_U32: {
5603 // Shuffle the operands around so the lane index operand is in the
5606 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5607 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5608 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5609 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5610 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5611 TmpInst.addOperand(Inst.getOperand(4)); // Rm
5612 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5613 TmpInst.addOperand(Inst.getOperand(1)); // lane
5614 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
5615 TmpInst.addOperand(Inst.getOperand(6));
5620 case ARM::VLD2LNdWB_register_Asm_8: case ARM::VLD2LNdWB_register_Asm_P8:
5621 case ARM::VLD2LNdWB_register_Asm_I8: case ARM::VLD2LNdWB_register_Asm_S8:
5622 case ARM::VLD2LNdWB_register_Asm_U8: case ARM::VLD2LNdWB_register_Asm_16:
5623 case ARM::VLD2LNdWB_register_Asm_P16: case ARM::VLD2LNdWB_register_Asm_I16:
5624 case ARM::VLD2LNdWB_register_Asm_S16: case ARM::VLD2LNdWB_register_Asm_U16:
5625 case ARM::VLD2LNdWB_register_Asm_32: case ARM::VLD2LNdWB_register_Asm_F:
5626 case ARM::VLD2LNdWB_register_Asm_F32: case ARM::VLD2LNdWB_register_Asm_I32:
5627 case ARM::VLD2LNdWB_register_Asm_S32: case ARM::VLD2LNdWB_register_Asm_U32:
5628 case ARM::VLD2LNqWB_register_Asm_16: case ARM::VLD2LNqWB_register_Asm_P16:
5629 case ARM::VLD2LNqWB_register_Asm_I16: case ARM::VLD2LNqWB_register_Asm_S16:
5630 case ARM::VLD2LNqWB_register_Asm_U16: case ARM::VLD2LNqWB_register_Asm_32:
5631 case ARM::VLD2LNqWB_register_Asm_F: case ARM::VLD2LNqWB_register_Asm_F32:
5632 case ARM::VLD2LNqWB_register_Asm_I32: case ARM::VLD2LNqWB_register_Asm_S32:
5633 case ARM::VLD2LNqWB_register_Asm_U32: {
5635 // Shuffle the operands around so the lane index operand is in the
5638 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5639 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5640 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5642 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5643 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5644 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5645 TmpInst.addOperand(Inst.getOperand(4)); // Rm
5646 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5647 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5649 TmpInst.addOperand(Inst.getOperand(1)); // lane
5650 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
5651 TmpInst.addOperand(Inst.getOperand(6));
5656 case ARM::VLD1LNdWB_fixed_Asm_8: case ARM::VLD1LNdWB_fixed_Asm_P8:
5657 case ARM::VLD1LNdWB_fixed_Asm_I8: case ARM::VLD1LNdWB_fixed_Asm_S8:
5658 case ARM::VLD1LNdWB_fixed_Asm_U8: case ARM::VLD1LNdWB_fixed_Asm_16:
5659 case ARM::VLD1LNdWB_fixed_Asm_P16: case ARM::VLD1LNdWB_fixed_Asm_I16:
5660 case ARM::VLD1LNdWB_fixed_Asm_S16: case ARM::VLD1LNdWB_fixed_Asm_U16:
5661 case ARM::VLD1LNdWB_fixed_Asm_32: case ARM::VLD1LNdWB_fixed_Asm_F:
5662 case ARM::VLD1LNdWB_fixed_Asm_F32: case ARM::VLD1LNdWB_fixed_Asm_I32:
5663 case ARM::VLD1LNdWB_fixed_Asm_S32: case ARM::VLD1LNdWB_fixed_Asm_U32: {
5665 // Shuffle the operands around so the lane index operand is in the
5668 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5669 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5670 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5671 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5672 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5673 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
5674 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5675 TmpInst.addOperand(Inst.getOperand(1)); // lane
5676 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5677 TmpInst.addOperand(Inst.getOperand(5));
5682 case ARM::VLD2LNdWB_fixed_Asm_8: case ARM::VLD2LNdWB_fixed_Asm_P8:
5683 case ARM::VLD2LNdWB_fixed_Asm_I8: case ARM::VLD2LNdWB_fixed_Asm_S8:
5684 case ARM::VLD2LNdWB_fixed_Asm_U8: case ARM::VLD2LNdWB_fixed_Asm_16:
5685 case ARM::VLD2LNdWB_fixed_Asm_P16: case ARM::VLD2LNdWB_fixed_Asm_I16:
5686 case ARM::VLD2LNdWB_fixed_Asm_S16: case ARM::VLD2LNdWB_fixed_Asm_U16:
5687 case ARM::VLD2LNdWB_fixed_Asm_32: case ARM::VLD2LNdWB_fixed_Asm_F:
5688 case ARM::VLD2LNdWB_fixed_Asm_F32: case ARM::VLD2LNdWB_fixed_Asm_I32:
5689 case ARM::VLD2LNdWB_fixed_Asm_S32: case ARM::VLD2LNdWB_fixed_Asm_U32:
5690 case ARM::VLD2LNqWB_fixed_Asm_16: case ARM::VLD2LNqWB_fixed_Asm_P16:
5691 case ARM::VLD2LNqWB_fixed_Asm_I16: case ARM::VLD2LNqWB_fixed_Asm_S16:
5692 case ARM::VLD2LNqWB_fixed_Asm_U16: case ARM::VLD2LNqWB_fixed_Asm_32:
5693 case ARM::VLD2LNqWB_fixed_Asm_F: case ARM::VLD2LNqWB_fixed_Asm_F32:
5694 case ARM::VLD2LNqWB_fixed_Asm_I32: case ARM::VLD2LNqWB_fixed_Asm_S32:
5695 case ARM::VLD2LNqWB_fixed_Asm_U32: {
5697 // Shuffle the operands around so the lane index operand is in the
5700 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5701 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5702 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5704 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5705 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5706 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5707 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
5708 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5709 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5711 TmpInst.addOperand(Inst.getOperand(1)); // lane
5712 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5713 TmpInst.addOperand(Inst.getOperand(5));
5718 case ARM::VLD1LNdAsm_8: case ARM::VLD1LNdAsm_P8: case ARM::VLD1LNdAsm_I8:
5719 case ARM::VLD1LNdAsm_S8: case ARM::VLD1LNdAsm_U8: case ARM::VLD1LNdAsm_16:
5720 case ARM::VLD1LNdAsm_P16: case ARM::VLD1LNdAsm_I16: case ARM::VLD1LNdAsm_S16:
5721 case ARM::VLD1LNdAsm_U16: case ARM::VLD1LNdAsm_32: case ARM::VLD1LNdAsm_F:
5722 case ARM::VLD1LNdAsm_F32: case ARM::VLD1LNdAsm_I32: case ARM::VLD1LNdAsm_S32:
5723 case ARM::VLD1LNdAsm_U32: {
5725 // Shuffle the operands around so the lane index operand is in the
5728 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5729 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5730 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5731 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5732 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5733 TmpInst.addOperand(Inst.getOperand(1)); // lane
5734 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5735 TmpInst.addOperand(Inst.getOperand(5));
5740 case ARM::VLD2LNdAsm_8: case ARM::VLD2LNdAsm_P8: case ARM::VLD2LNdAsm_I8:
5741 case ARM::VLD2LNdAsm_S8: case ARM::VLD2LNdAsm_U8: case ARM::VLD2LNdAsm_16:
5742 case ARM::VLD2LNdAsm_P16: case ARM::VLD2LNdAsm_I16: case ARM::VLD2LNdAsm_S16:
5743 case ARM::VLD2LNdAsm_U16: case ARM::VLD2LNdAsm_32: case ARM::VLD2LNdAsm_F:
5744 case ARM::VLD2LNdAsm_F32: case ARM::VLD2LNdAsm_I32: case ARM::VLD2LNdAsm_S32:
5745 case ARM::VLD2LNdAsm_U32: case ARM::VLD2LNqAsm_16: case ARM::VLD2LNqAsm_P16:
5746 case ARM::VLD2LNqAsm_I16: case ARM::VLD2LNqAsm_S16: case ARM::VLD2LNqAsm_U16:
5747 case ARM::VLD2LNqAsm_32: case ARM::VLD2LNqAsm_F: case ARM::VLD2LNqAsm_F32:
5748 case ARM::VLD2LNqAsm_I32: case ARM::VLD2LNqAsm_S32:
5749 case ARM::VLD2LNqAsm_U32: {
5751 // Shuffle the operands around so the lane index operand is in the
5754 TmpInst.setOpcode(getRealVLDLNOpcode(Inst.getOpcode(), Spacing));
5755 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5756 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5758 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5759 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5760 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
5761 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5763 TmpInst.addOperand(Inst.getOperand(1)); // lane
5764 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5765 TmpInst.addOperand(Inst.getOperand(5));
5769 // Handle the Thumb2 mode MOV complex aliases.
5771 case ARM::t2MOVSsr: {
5772 // Which instruction to expand to depends on the CCOut operand and
5773 // whether we're in an IT block if the register operands are low
5775 bool isNarrow = false;
5776 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
5777 isARMLowRegister(Inst.getOperand(1).getReg()) &&
5778 isARMLowRegister(Inst.getOperand(2).getReg()) &&
5779 Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() &&
5780 inITBlock() == (Inst.getOpcode() == ARM::t2MOVsr))
5784 switch(ARM_AM::getSORegShOp(Inst.getOperand(3).getImm())) {
5785 default: llvm_unreachable("unexpected opcode!");
5786 case ARM_AM::asr: newOpc = isNarrow ? ARM::tASRrr : ARM::t2ASRrr; break;
5787 case ARM_AM::lsr: newOpc = isNarrow ? ARM::tLSRrr : ARM::t2LSRrr; break;
5788 case ARM_AM::lsl: newOpc = isNarrow ? ARM::tLSLrr : ARM::t2LSLrr; break;
5789 case ARM_AM::ror: newOpc = isNarrow ? ARM::tROR : ARM::t2RORrr; break;
5791 TmpInst.setOpcode(newOpc);
5792 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5794 TmpInst.addOperand(MCOperand::CreateReg(
5795 Inst.getOpcode() == ARM::t2MOVSsr ? ARM::CPSR : 0));
5796 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5797 TmpInst.addOperand(Inst.getOperand(2)); // Rm
5798 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
5799 TmpInst.addOperand(Inst.getOperand(5));
5801 TmpInst.addOperand(MCOperand::CreateReg(
5802 Inst.getOpcode() == ARM::t2MOVSsr ? ARM::CPSR : 0));
5807 case ARM::t2MOVSsi: {
5808 // Which instruction to expand to depends on the CCOut operand and
5809 // whether we're in an IT block if the register operands are low
5811 bool isNarrow = false;
5812 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
5813 isARMLowRegister(Inst.getOperand(1).getReg()) &&
5814 inITBlock() == (Inst.getOpcode() == ARM::t2MOVsi))
5818 switch(ARM_AM::getSORegShOp(Inst.getOperand(2).getImm())) {
5819 default: llvm_unreachable("unexpected opcode!");
5820 case ARM_AM::asr: newOpc = isNarrow ? ARM::tASRri : ARM::t2ASRri; break;
5821 case ARM_AM::lsr: newOpc = isNarrow ? ARM::tLSRri : ARM::t2LSRri; break;
5822 case ARM_AM::lsl: newOpc = isNarrow ? ARM::tLSLri : ARM::t2LSLri; break;
5823 case ARM_AM::ror: newOpc = ARM::t2RORri; isNarrow = false; break;
5824 case ARM_AM::rrx: isNarrow = false; newOpc = ARM::t2RRX; break;
5826 unsigned Ammount = ARM_AM::getSORegOffset(Inst.getOperand(2).getImm());
5827 if (Ammount == 32) Ammount = 0;
5828 TmpInst.setOpcode(newOpc);
5829 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5831 TmpInst.addOperand(MCOperand::CreateReg(
5832 Inst.getOpcode() == ARM::t2MOVSsi ? ARM::CPSR : 0));
5833 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5834 if (newOpc != ARM::t2RRX)
5835 TmpInst.addOperand(MCOperand::CreateImm(Ammount));
5836 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
5837 TmpInst.addOperand(Inst.getOperand(4));
5839 TmpInst.addOperand(MCOperand::CreateReg(
5840 Inst.getOpcode() == ARM::t2MOVSsi ? ARM::CPSR : 0));
5844 // Handle the ARM mode MOV complex aliases.
5849 ARM_AM::ShiftOpc ShiftTy;
5850 switch(Inst.getOpcode()) {
5851 default: llvm_unreachable("unexpected opcode!");
5852 case ARM::ASRr: ShiftTy = ARM_AM::asr; break;
5853 case ARM::LSRr: ShiftTy = ARM_AM::lsr; break;
5854 case ARM::LSLr: ShiftTy = ARM_AM::lsl; break;
5855 case ARM::RORr: ShiftTy = ARM_AM::ror; break;
5857 unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, 0);
5859 TmpInst.setOpcode(ARM::MOVsr);
5860 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5861 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5862 TmpInst.addOperand(Inst.getOperand(2)); // Rm
5863 TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
5864 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
5865 TmpInst.addOperand(Inst.getOperand(4));
5866 TmpInst.addOperand(Inst.getOperand(5)); // cc_out
5874 ARM_AM::ShiftOpc ShiftTy;
5875 switch(Inst.getOpcode()) {
5876 default: llvm_unreachable("unexpected opcode!");
5877 case ARM::ASRi: ShiftTy = ARM_AM::asr; break;
5878 case ARM::LSRi: ShiftTy = ARM_AM::lsr; break;
5879 case ARM::LSLi: ShiftTy = ARM_AM::lsl; break;
5880 case ARM::RORi: ShiftTy = ARM_AM::ror; break;
5882 // A shift by zero is a plain MOVr, not a MOVsi.
5883 unsigned Amt = Inst.getOperand(2).getImm();
5884 unsigned Opc = Amt == 0 ? ARM::MOVr : ARM::MOVsi;
5885 unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, Amt);
5887 TmpInst.setOpcode(Opc);
5888 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5889 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5890 if (Opc == ARM::MOVsi)
5891 TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
5892 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
5893 TmpInst.addOperand(Inst.getOperand(4));
5894 TmpInst.addOperand(Inst.getOperand(5)); // cc_out
5899 unsigned Shifter = ARM_AM::getSORegOpc(ARM_AM::rrx, 0);
5901 TmpInst.setOpcode(ARM::MOVsi);
5902 TmpInst.addOperand(Inst.getOperand(0)); // Rd
5903 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5904 TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
5905 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5906 TmpInst.addOperand(Inst.getOperand(3));
5907 TmpInst.addOperand(Inst.getOperand(4)); // cc_out
5911 case ARM::t2LDMIA_UPD: {
5912 // If this is a load of a single register, then we should use
5913 // a post-indexed LDR instruction instead, per the ARM ARM.
5914 if (Inst.getNumOperands() != 5)
5917 TmpInst.setOpcode(ARM::t2LDR_POST);
5918 TmpInst.addOperand(Inst.getOperand(4)); // Rt
5919 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
5920 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5921 TmpInst.addOperand(MCOperand::CreateImm(4));
5922 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5923 TmpInst.addOperand(Inst.getOperand(3));
5927 case ARM::t2STMDB_UPD: {
5928 // If this is a store of a single register, then we should use
5929 // a pre-indexed STR instruction instead, per the ARM ARM.
5930 if (Inst.getNumOperands() != 5)
5933 TmpInst.setOpcode(ARM::t2STR_PRE);
5934 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
5935 TmpInst.addOperand(Inst.getOperand(4)); // Rt
5936 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5937 TmpInst.addOperand(MCOperand::CreateImm(-4));
5938 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5939 TmpInst.addOperand(Inst.getOperand(3));
5943 case ARM::LDMIA_UPD:
5944 // If this is a load of a single register via a 'pop', then we should use
5945 // a post-indexed LDR instruction instead, per the ARM ARM.
5946 if (static_cast<ARMOperand*>(Operands[0])->getToken() == "pop" &&
5947 Inst.getNumOperands() == 5) {
5949 TmpInst.setOpcode(ARM::LDR_POST_IMM);
5950 TmpInst.addOperand(Inst.getOperand(4)); // Rt
5951 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
5952 TmpInst.addOperand(Inst.getOperand(1)); // Rn
5953 TmpInst.addOperand(MCOperand::CreateReg(0)); // am2offset
5954 TmpInst.addOperand(MCOperand::CreateImm(4));
5955 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5956 TmpInst.addOperand(Inst.getOperand(3));
5961 case ARM::STMDB_UPD:
5962 // If this is a store of a single register via a 'push', then we should use
5963 // a pre-indexed STR instruction instead, per the ARM ARM.
5964 if (static_cast<ARMOperand*>(Operands[0])->getToken() == "push" &&
5965 Inst.getNumOperands() == 5) {
5967 TmpInst.setOpcode(ARM::STR_PRE_IMM);
5968 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
5969 TmpInst.addOperand(Inst.getOperand(4)); // Rt
5970 TmpInst.addOperand(Inst.getOperand(1)); // addrmode_imm12
5971 TmpInst.addOperand(MCOperand::CreateImm(-4));
5972 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
5973 TmpInst.addOperand(Inst.getOperand(3));
5977 case ARM::t2ADDri12:
5978 // If the immediate fits for encoding T3 (t2ADDri) and the generic "add"
5979 // mnemonic was used (not "addw"), encoding T3 is preferred.
5980 if (static_cast<ARMOperand*>(Operands[0])->getToken() != "add" ||
5981 ARM_AM::getT2SOImmVal(Inst.getOperand(2).getImm()) == -1)
5983 Inst.setOpcode(ARM::t2ADDri);
5984 Inst.addOperand(MCOperand::CreateReg(0)); // cc_out
5986 case ARM::t2SUBri12:
5987 // If the immediate fits for encoding T3 (t2SUBri) and the generic "sub"
5988 // mnemonic was used (not "subw"), encoding T3 is preferred.
5989 if (static_cast<ARMOperand*>(Operands[0])->getToken() != "sub" ||
5990 ARM_AM::getT2SOImmVal(Inst.getOperand(2).getImm()) == -1)
5992 Inst.setOpcode(ARM::t2SUBri);
5993 Inst.addOperand(MCOperand::CreateReg(0)); // cc_out
5996 // If the immediate is in the range 0-7, we want tADDi3 iff Rd was
5997 // explicitly specified. From the ARM ARM: "Encoding T1 is preferred
5998 // to encoding T2 if <Rd> is specified and encoding T2 is preferred
5999 // to encoding T1 if <Rd> is omitted."
6000 if (Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
6001 Inst.setOpcode(ARM::tADDi3);
6006 // If the immediate is in the range 0-7, we want tADDi3 iff Rd was
6007 // explicitly specified. From the ARM ARM: "Encoding T1 is preferred
6008 // to encoding T2 if <Rd> is specified and encoding T2 is preferred
6009 // to encoding T1 if <Rd> is omitted."
6010 if (Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
6011 Inst.setOpcode(ARM::tSUBi3);
6015 case ARM::t2ADDrr: {
6016 // If the destination and first source operand are the same, and
6017 // there's no setting of the flags, use encoding T2 instead of T3.
6018 // Note that this is only for ADD, not SUB. This mirrors the system
6019 // 'as' behaviour. Make sure the wide encoding wasn't explicit.
6020 if (Inst.getOperand(0).getReg() != Inst.getOperand(1).getReg() ||
6021 Inst.getOperand(5).getReg() != 0 ||
6022 (static_cast<ARMOperand*>(Operands[3])->isToken() &&
6023 static_cast<ARMOperand*>(Operands[3])->getToken() == ".w"))
6026 TmpInst.setOpcode(ARM::tADDhirr);
6027 TmpInst.addOperand(Inst.getOperand(0));
6028 TmpInst.addOperand(Inst.getOperand(0));
6029 TmpInst.addOperand(Inst.getOperand(2));
6030 TmpInst.addOperand(Inst.getOperand(3));
6031 TmpInst.addOperand(Inst.getOperand(4));
6036 // A Thumb conditional branch outside of an IT block is a tBcc.
6037 if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock()) {
6038 Inst.setOpcode(ARM::tBcc);
6043 // A Thumb2 conditional branch outside of an IT block is a t2Bcc.
6044 if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock()){
6045 Inst.setOpcode(ARM::t2Bcc);
6050 // If the conditional is AL or we're in an IT block, we really want t2B.
6051 if (Inst.getOperand(1).getImm() == ARMCC::AL || inITBlock()) {
6052 Inst.setOpcode(ARM::t2B);
6057 // If the conditional is AL, we really want tB.
6058 if (Inst.getOperand(1).getImm() == ARMCC::AL) {
6059 Inst.setOpcode(ARM::tB);
6064 // If the register list contains any high registers, or if the writeback
6065 // doesn't match what tLDMIA can do, we need to use the 32-bit encoding
6066 // instead if we're in Thumb2. Otherwise, this should have generated
6067 // an error in validateInstruction().
6068 unsigned Rn = Inst.getOperand(0).getReg();
6069 bool hasWritebackToken =
6070 (static_cast<ARMOperand*>(Operands[3])->isToken() &&
6071 static_cast<ARMOperand*>(Operands[3])->getToken() == "!");
6072 bool listContainsBase;
6073 if (checkLowRegisterList(Inst, 3, Rn, 0, listContainsBase) ||
6074 (!listContainsBase && !hasWritebackToken) ||
6075 (listContainsBase && hasWritebackToken)) {
6076 // 16-bit encoding isn't sufficient. Switch to the 32-bit version.
6077 assert (isThumbTwo());
6078 Inst.setOpcode(hasWritebackToken ? ARM::t2LDMIA_UPD : ARM::t2LDMIA);
6079 // If we're switching to the updating version, we need to insert
6080 // the writeback tied operand.
6081 if (hasWritebackToken)
6082 Inst.insert(Inst.begin(),
6083 MCOperand::CreateReg(Inst.getOperand(0).getReg()));
6088 case ARM::tSTMIA_UPD: {
6089 // If the register list contains any high registers, we need to use
6090 // the 32-bit encoding instead if we're in Thumb2. Otherwise, this
6091 // should have generated an error in validateInstruction().
6092 unsigned Rn = Inst.getOperand(0).getReg();
6093 bool listContainsBase;
6094 if (checkLowRegisterList(Inst, 4, Rn, 0, listContainsBase)) {
6095 // 16-bit encoding isn't sufficient. Switch to the 32-bit version.
6096 assert (isThumbTwo());
6097 Inst.setOpcode(ARM::t2STMIA_UPD);
6103 bool listContainsBase;
6104 // If the register list contains any high registers, we need to use
6105 // the 32-bit encoding instead if we're in Thumb2. Otherwise, this
6106 // should have generated an error in validateInstruction().
6107 if (!checkLowRegisterList(Inst, 2, 0, ARM::PC, listContainsBase))
6109 assert (isThumbTwo());
6110 Inst.setOpcode(ARM::t2LDMIA_UPD);
6111 // Add the base register and writeback operands.
6112 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
6113 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
6117 bool listContainsBase;
6118 if (!checkLowRegisterList(Inst, 2, 0, ARM::LR, listContainsBase))
6120 assert (isThumbTwo());
6121 Inst.setOpcode(ARM::t2STMDB_UPD);
6122 // Add the base register and writeback operands.
6123 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
6124 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
6128 // If we can use the 16-bit encoding and the user didn't explicitly
6129 // request the 32-bit variant, transform it here.
6130 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
6131 Inst.getOperand(1).getImm() <= 255 &&
6132 ((!inITBlock() && Inst.getOperand(2).getImm() == ARMCC::AL &&
6133 Inst.getOperand(4).getReg() == ARM::CPSR) ||
6134 (inITBlock() && Inst.getOperand(4).getReg() == 0)) &&
6135 (!static_cast<ARMOperand*>(Operands[2])->isToken() ||
6136 static_cast<ARMOperand*>(Operands[2])->getToken() != ".w")) {
6137 // The operands aren't in the same order for tMOVi8...
6139 TmpInst.setOpcode(ARM::tMOVi8);
6140 TmpInst.addOperand(Inst.getOperand(0));
6141 TmpInst.addOperand(Inst.getOperand(4));
6142 TmpInst.addOperand(Inst.getOperand(1));
6143 TmpInst.addOperand(Inst.getOperand(2));
6144 TmpInst.addOperand(Inst.getOperand(3));
6151 // If we can use the 16-bit encoding and the user didn't explicitly
6152 // request the 32-bit variant, transform it here.
6153 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
6154 isARMLowRegister(Inst.getOperand(1).getReg()) &&
6155 Inst.getOperand(2).getImm() == ARMCC::AL &&
6156 Inst.getOperand(4).getReg() == ARM::CPSR &&
6157 (!static_cast<ARMOperand*>(Operands[2])->isToken() ||
6158 static_cast<ARMOperand*>(Operands[2])->getToken() != ".w")) {
6159 // The operands aren't the same for tMOV[S]r... (no cc_out)
6161 TmpInst.setOpcode(Inst.getOperand(4).getReg() ? ARM::tMOVSr : ARM::tMOVr);
6162 TmpInst.addOperand(Inst.getOperand(0));
6163 TmpInst.addOperand(Inst.getOperand(1));
6164 TmpInst.addOperand(Inst.getOperand(2));
6165 TmpInst.addOperand(Inst.getOperand(3));
6175 // If we can use the 16-bit encoding and the user didn't explicitly
6176 // request the 32-bit variant, transform it here.
6177 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
6178 isARMLowRegister(Inst.getOperand(1).getReg()) &&
6179 Inst.getOperand(2).getImm() == 0 &&
6180 (!static_cast<ARMOperand*>(Operands[2])->isToken() ||
6181 static_cast<ARMOperand*>(Operands[2])->getToken() != ".w")) {
6183 switch (Inst.getOpcode()) {
6184 default: llvm_unreachable("Illegal opcode!");
6185 case ARM::t2SXTH: NewOpc = ARM::tSXTH; break;
6186 case ARM::t2SXTB: NewOpc = ARM::tSXTB; break;
6187 case ARM::t2UXTH: NewOpc = ARM::tUXTH; break;
6188 case ARM::t2UXTB: NewOpc = ARM::tUXTB; break;
6190 // The operands aren't the same for thumb1 (no rotate operand).
6192 TmpInst.setOpcode(NewOpc);
6193 TmpInst.addOperand(Inst.getOperand(0));
6194 TmpInst.addOperand(Inst.getOperand(1));
6195 TmpInst.addOperand(Inst.getOperand(3));
6196 TmpInst.addOperand(Inst.getOperand(4));
6203 ARM_AM::ShiftOpc SOpc = ARM_AM::getSORegShOp(Inst.getOperand(2).getImm());
6204 if (SOpc == ARM_AM::rrx) return false;
6205 if (ARM_AM::getSORegOffset(Inst.getOperand(2).getImm()) == 0) {
6206 // Shifting by zero is accepted as a vanilla 'MOVr'
6208 TmpInst.setOpcode(ARM::MOVr);
6209 TmpInst.addOperand(Inst.getOperand(0));
6210 TmpInst.addOperand(Inst.getOperand(1));
6211 TmpInst.addOperand(Inst.getOperand(3));
6212 TmpInst.addOperand(Inst.getOperand(4));
6213 TmpInst.addOperand(Inst.getOperand(5));
6226 ARM_AM::ShiftOpc SOpc = ARM_AM::getSORegShOp(Inst.getOperand(3).getImm());
6227 if (SOpc == ARM_AM::rrx) return false;
6228 switch (Inst.getOpcode()) {
6229 default: assert(0 && "unexpected opcode!");
6230 case ARM::ANDrsi: newOpc = ARM::ANDrr; break;
6231 case ARM::ORRrsi: newOpc = ARM::ORRrr; break;
6232 case ARM::EORrsi: newOpc = ARM::EORrr; break;
6233 case ARM::BICrsi: newOpc = ARM::BICrr; break;
6234 case ARM::SUBrsi: newOpc = ARM::SUBrr; break;
6235 case ARM::ADDrsi: newOpc = ARM::ADDrr; break;
6237 // If the shift is by zero, use the non-shifted instruction definition.
6238 if (ARM_AM::getSORegOffset(Inst.getOperand(3).getImm()) == 0) {
6240 TmpInst.setOpcode(newOpc);
6241 TmpInst.addOperand(Inst.getOperand(0));
6242 TmpInst.addOperand(Inst.getOperand(1));
6243 TmpInst.addOperand(Inst.getOperand(2));
6244 TmpInst.addOperand(Inst.getOperand(4));
6245 TmpInst.addOperand(Inst.getOperand(5));
6246 TmpInst.addOperand(Inst.getOperand(6));
6253 // The mask bits for all but the first condition are represented as
6254 // the low bit of the condition code value implies 't'. We currently
6255 // always have 1 implies 't', so XOR toggle the bits if the low bit
6256 // of the condition code is zero. The encoding also expects the low
6257 // bit of the condition to be encoded as bit 4 of the mask operand,
6258 // so mask that in if needed
6259 MCOperand &MO = Inst.getOperand(1);
6260 unsigned Mask = MO.getImm();
6261 unsigned OrigMask = Mask;
6262 unsigned TZ = CountTrailingZeros_32(Mask);
6263 if ((Inst.getOperand(0).getImm() & 1) == 0) {
6264 assert(Mask && TZ <= 3 && "illegal IT mask value!");
6265 for (unsigned i = 3; i != TZ; --i)
6271 // Set up the IT block state according to the IT instruction we just
6273 assert(!inITBlock() && "nested IT blocks?!");
6274 ITState.Cond = ARMCC::CondCodes(Inst.getOperand(0).getImm());
6275 ITState.Mask = OrigMask; // Use the original mask, not the updated one.
6276 ITState.CurPosition = 0;
6277 ITState.FirstCond = true;
6284 unsigned ARMAsmParser::checkTargetMatchPredicate(MCInst &Inst) {
6285 // 16-bit thumb arithmetic instructions either require or preclude the 'S'
6286 // suffix depending on whether they're in an IT block or not.
6287 unsigned Opc = Inst.getOpcode();
6288 const MCInstrDesc &MCID = getInstDesc(Opc);
6289 if (MCID.TSFlags & ARMII::ThumbArithFlagSetting) {
6290 assert(MCID.hasOptionalDef() &&
6291 "optionally flag setting instruction missing optional def operand");
6292 assert(MCID.NumOperands == Inst.getNumOperands() &&
6293 "operand count mismatch!");
6294 // Find the optional-def operand (cc_out).
6297 !MCID.OpInfo[OpNo].isOptionalDef() && OpNo < MCID.NumOperands;
6300 // If we're parsing Thumb1, reject it completely.
6301 if (isThumbOne() && Inst.getOperand(OpNo).getReg() != ARM::CPSR)
6302 return Match_MnemonicFail;
6303 // If we're parsing Thumb2, which form is legal depends on whether we're
6305 if (isThumbTwo() && Inst.getOperand(OpNo).getReg() != ARM::CPSR &&
6307 return Match_RequiresITBlock;
6308 if (isThumbTwo() && Inst.getOperand(OpNo).getReg() == ARM::CPSR &&
6310 return Match_RequiresNotITBlock;
6312 // Some high-register supporting Thumb1 encodings only allow both registers
6313 // to be from r0-r7 when in Thumb2.
6314 else if (Opc == ARM::tADDhirr && isThumbOne() &&
6315 isARMLowRegister(Inst.getOperand(1).getReg()) &&
6316 isARMLowRegister(Inst.getOperand(2).getReg()))
6317 return Match_RequiresThumb2;
6318 // Others only require ARMv6 or later.
6319 else if (Opc == ARM::tMOVr && isThumbOne() && !hasV6Ops() &&
6320 isARMLowRegister(Inst.getOperand(0).getReg()) &&
6321 isARMLowRegister(Inst.getOperand(1).getReg()))
6322 return Match_RequiresV6;
6323 return Match_Success;
6327 MatchAndEmitInstruction(SMLoc IDLoc,
6328 SmallVectorImpl<MCParsedAsmOperand*> &Operands,
6332 unsigned MatchResult;
6333 MatchResult = MatchInstructionImpl(Operands, Inst, ErrorInfo);
6334 switch (MatchResult) {
6337 // Context sensitive operand constraints aren't handled by the matcher,
6338 // so check them here.
6339 if (validateInstruction(Inst, Operands)) {
6340 // Still progress the IT block, otherwise one wrong condition causes
6341 // nasty cascading errors.
6342 forwardITPosition();
6346 // Some instructions need post-processing to, for example, tweak which
6347 // encoding is selected. Loop on it while changes happen so the
6348 // individual transformations can chain off each other. E.g.,
6349 // tPOP(r8)->t2LDMIA_UPD(sp,r8)->t2STR_POST(sp,r8)
6350 while (processInstruction(Inst, Operands))
6353 // Only move forward at the very end so that everything in validate
6354 // and process gets a consistent answer about whether we're in an IT
6356 forwardITPosition();
6358 Out.EmitInstruction(Inst);
6360 case Match_MissingFeature:
6361 Error(IDLoc, "instruction requires a CPU feature not currently enabled");
6363 case Match_InvalidOperand: {
6364 SMLoc ErrorLoc = IDLoc;
6365 if (ErrorInfo != ~0U) {
6366 if (ErrorInfo >= Operands.size())
6367 return Error(IDLoc, "too few operands for instruction");
6369 ErrorLoc = ((ARMOperand*)Operands[ErrorInfo])->getStartLoc();
6370 if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
6373 return Error(ErrorLoc, "invalid operand for instruction");
6375 case Match_MnemonicFail:
6376 return Error(IDLoc, "invalid instruction");
6377 case Match_ConversionFail:
6378 // The converter function will have already emited a diagnostic.
6380 case Match_RequiresNotITBlock:
6381 return Error(IDLoc, "flag setting instruction only valid outside IT block");
6382 case Match_RequiresITBlock:
6383 return Error(IDLoc, "instruction only valid inside IT block");
6384 case Match_RequiresV6:
6385 return Error(IDLoc, "instruction variant requires ARMv6 or later");
6386 case Match_RequiresThumb2:
6387 return Error(IDLoc, "instruction variant requires Thumb2");
6390 llvm_unreachable("Implement any new match types added!");
6394 /// parseDirective parses the arm specific directives
6395 bool ARMAsmParser::ParseDirective(AsmToken DirectiveID) {
6396 StringRef IDVal = DirectiveID.getIdentifier();
6397 if (IDVal == ".word")
6398 return parseDirectiveWord(4, DirectiveID.getLoc());
6399 else if (IDVal == ".thumb")
6400 return parseDirectiveThumb(DirectiveID.getLoc());
6401 else if (IDVal == ".arm")
6402 return parseDirectiveARM(DirectiveID.getLoc());
6403 else if (IDVal == ".thumb_func")
6404 return parseDirectiveThumbFunc(DirectiveID.getLoc());
6405 else if (IDVal == ".code")
6406 return parseDirectiveCode(DirectiveID.getLoc());
6407 else if (IDVal == ".syntax")
6408 return parseDirectiveSyntax(DirectiveID.getLoc());
6409 else if (IDVal == ".unreq")
6410 return parseDirectiveUnreq(DirectiveID.getLoc());
6411 else if (IDVal == ".arch")
6412 return parseDirectiveArch(DirectiveID.getLoc());
6413 else if (IDVal == ".eabi_attribute")
6414 return parseDirectiveEabiAttr(DirectiveID.getLoc());
6418 /// parseDirectiveWord
6419 /// ::= .word [ expression (, expression)* ]
6420 bool ARMAsmParser::parseDirectiveWord(unsigned Size, SMLoc L) {
6421 if (getLexer().isNot(AsmToken::EndOfStatement)) {
6423 const MCExpr *Value;
6424 if (getParser().ParseExpression(Value))
6427 getParser().getStreamer().EmitValue(Value, Size, 0/*addrspace*/);
6429 if (getLexer().is(AsmToken::EndOfStatement))
6432 // FIXME: Improve diagnostic.
6433 if (getLexer().isNot(AsmToken::Comma))
6434 return Error(L, "unexpected token in directive");
6443 /// parseDirectiveThumb
6445 bool ARMAsmParser::parseDirectiveThumb(SMLoc L) {
6446 if (getLexer().isNot(AsmToken::EndOfStatement))
6447 return Error(L, "unexpected token in directive");
6452 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
6456 /// parseDirectiveARM
6458 bool ARMAsmParser::parseDirectiveARM(SMLoc L) {
6459 if (getLexer().isNot(AsmToken::EndOfStatement))
6460 return Error(L, "unexpected token in directive");
6465 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
6469 /// parseDirectiveThumbFunc
6470 /// ::= .thumbfunc symbol_name
6471 bool ARMAsmParser::parseDirectiveThumbFunc(SMLoc L) {
6472 const MCAsmInfo &MAI = getParser().getStreamer().getContext().getAsmInfo();
6473 bool isMachO = MAI.hasSubsectionsViaSymbols();
6475 bool needFuncName = true;
6477 // Darwin asm has (optionally) function name after .thumb_func direction
6480 const AsmToken &Tok = Parser.getTok();
6481 if (Tok.isNot(AsmToken::EndOfStatement)) {
6482 if (Tok.isNot(AsmToken::Identifier) && Tok.isNot(AsmToken::String))
6483 return Error(L, "unexpected token in .thumb_func directive");
6484 Name = Tok.getIdentifier();
6485 Parser.Lex(); // Consume the identifier token.
6486 needFuncName = false;
6490 if (getLexer().isNot(AsmToken::EndOfStatement))
6491 return Error(L, "unexpected token in directive");
6493 // Eat the end of statement and any blank lines that follow.
6494 while (getLexer().is(AsmToken::EndOfStatement))
6497 // FIXME: assuming function name will be the line following .thumb_func
6498 // We really should be checking the next symbol definition even if there's
6499 // stuff in between.
6501 Name = Parser.getTok().getIdentifier();
6504 // Mark symbol as a thumb symbol.
6505 MCSymbol *Func = getParser().getContext().GetOrCreateSymbol(Name);
6506 getParser().getStreamer().EmitThumbFunc(Func);
6510 /// parseDirectiveSyntax
6511 /// ::= .syntax unified | divided
6512 bool ARMAsmParser::parseDirectiveSyntax(SMLoc L) {
6513 const AsmToken &Tok = Parser.getTok();
6514 if (Tok.isNot(AsmToken::Identifier))
6515 return Error(L, "unexpected token in .syntax directive");
6516 StringRef Mode = Tok.getString();
6517 if (Mode == "unified" || Mode == "UNIFIED")
6519 else if (Mode == "divided" || Mode == "DIVIDED")
6520 return Error(L, "'.syntax divided' arm asssembly not supported");
6522 return Error(L, "unrecognized syntax mode in .syntax directive");
6524 if (getLexer().isNot(AsmToken::EndOfStatement))
6525 return Error(Parser.getTok().getLoc(), "unexpected token in directive");
6528 // TODO tell the MC streamer the mode
6529 // getParser().getStreamer().Emit???();
6533 /// parseDirectiveCode
6534 /// ::= .code 16 | 32
6535 bool ARMAsmParser::parseDirectiveCode(SMLoc L) {
6536 const AsmToken &Tok = Parser.getTok();
6537 if (Tok.isNot(AsmToken::Integer))
6538 return Error(L, "unexpected token in .code directive");
6539 int64_t Val = Parser.getTok().getIntVal();
6545 return Error(L, "invalid operand to .code directive");
6547 if (getLexer().isNot(AsmToken::EndOfStatement))
6548 return Error(Parser.getTok().getLoc(), "unexpected token in directive");
6554 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
6558 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
6564 /// parseDirectiveReq
6565 /// ::= name .req registername
6566 bool ARMAsmParser::parseDirectiveReq(StringRef Name, SMLoc L) {
6567 Parser.Lex(); // Eat the '.req' token.
6569 SMLoc SRegLoc, ERegLoc;
6570 if (ParseRegister(Reg, SRegLoc, ERegLoc)) {
6571 Parser.EatToEndOfStatement();
6572 return Error(SRegLoc, "register name expected");
6575 // Shouldn't be anything else.
6576 if (Parser.getTok().isNot(AsmToken::EndOfStatement)) {
6577 Parser.EatToEndOfStatement();
6578 return Error(Parser.getTok().getLoc(),
6579 "unexpected input in .req directive.");
6582 Parser.Lex(); // Consume the EndOfStatement
6584 if (RegisterReqs.GetOrCreateValue(Name, Reg).getValue() != Reg)
6585 return Error(SRegLoc, "redefinition of '" + Name +
6586 "' does not match original.");
6591 /// parseDirectiveUneq
6592 /// ::= .unreq registername
6593 bool ARMAsmParser::parseDirectiveUnreq(SMLoc L) {
6594 if (Parser.getTok().isNot(AsmToken::Identifier)) {
6595 Parser.EatToEndOfStatement();
6596 return Error(L, "unexpected input in .unreq directive.");
6598 RegisterReqs.erase(Parser.getTok().getIdentifier());
6599 Parser.Lex(); // Eat the identifier.
6603 /// parseDirectiveArch
6605 bool ARMAsmParser::parseDirectiveArch(SMLoc L) {
6609 /// parseDirectiveEabiAttr
6610 /// ::= .eabi_attribute int, int
6611 bool ARMAsmParser::parseDirectiveEabiAttr(SMLoc L) {
6615 extern "C" void LLVMInitializeARMAsmLexer();
6617 /// Force static initialization.
6618 extern "C" void LLVMInitializeARMAsmParser() {
6619 RegisterMCAsmParser<ARMAsmParser> X(TheARMTarget);
6620 RegisterMCAsmParser<ARMAsmParser> Y(TheThumbTarget);
6621 LLVMInitializeARMAsmLexer();
6624 #define GET_REGISTER_MATCHER
6625 #define GET_MATCHER_IMPLEMENTATION
6626 #include "ARMGenAsmMatcher.inc"