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Diffstat (limited to 'gnu/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp')
| -rw-r--r-- | gnu/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp | 10700 |
1 files changed, 0 insertions, 10700 deletions
diff --git a/gnu/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/gnu/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp deleted file mode 100644 index 3832b0112b8..00000000000 --- a/gnu/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp +++ /dev/null @@ -1,10700 +0,0 @@ -//===- ARMAsmParser.cpp - Parse ARM assembly to MCInst instructions -------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// - -#include "ARMFeatures.h" -#include "InstPrinter/ARMInstPrinter.h" -#include "Utils/ARMBaseInfo.h" -#include "MCTargetDesc/ARMAddressingModes.h" -#include "MCTargetDesc/ARMBaseInfo.h" -#include "MCTargetDesc/ARMMCExpr.h" -#include "MCTargetDesc/ARMMCTargetDesc.h" -#include "llvm/ADT/APFloat.h" -#include "llvm/ADT/APInt.h" -#include "llvm/ADT/None.h" -#include "llvm/ADT/STLExtras.h" -#include "llvm/ADT/SmallSet.h" -#include "llvm/ADT/SmallVector.h" -#include "llvm/ADT/StringMap.h" -#include "llvm/ADT/StringRef.h" -#include "llvm/ADT/StringSwitch.h" -#include "llvm/ADT/Triple.h" -#include "llvm/ADT/Twine.h" -#include "llvm/MC/MCContext.h" -#include "llvm/MC/MCExpr.h" -#include "llvm/MC/MCInst.h" -#include "llvm/MC/MCInstrDesc.h" -#include "llvm/MC/MCInstrInfo.h" -#include "llvm/MC/MCObjectFileInfo.h" -#include "llvm/MC/MCParser/MCAsmLexer.h" -#include "llvm/MC/MCParser/MCAsmParser.h" -#include "llvm/MC/MCParser/MCAsmParserExtension.h" -#include "llvm/MC/MCParser/MCAsmParserUtils.h" -#include "llvm/MC/MCParser/MCParsedAsmOperand.h" -#include "llvm/MC/MCParser/MCTargetAsmParser.h" -#include "llvm/MC/MCRegisterInfo.h" -#include "llvm/MC/MCSection.h" -#include "llvm/MC/MCStreamer.h" -#include "llvm/MC/MCSubtargetInfo.h" -#include "llvm/MC/MCSymbol.h" -#include "llvm/MC/SubtargetFeature.h" -#include "llvm/Support/ARMBuildAttributes.h" -#include "llvm/Support/ARMEHABI.h" -#include "llvm/Support/Casting.h" -#include "llvm/Support/CommandLine.h" -#include "llvm/Support/Compiler.h" -#include "llvm/Support/ErrorHandling.h" -#include "llvm/Support/MathExtras.h" -#include "llvm/Support/SMLoc.h" -#include "llvm/Support/TargetParser.h" -#include "llvm/Support/TargetRegistry.h" -#include "llvm/Support/raw_ostream.h" -#include <algorithm> -#include <cassert> -#include <cstddef> -#include <cstdint> -#include <iterator> -#include <limits> -#include <memory> -#include <string> -#include <utility> -#include <vector> - -#define DEBUG_TYPE "asm-parser" - -using namespace llvm; - -namespace { - -enum class ImplicitItModeTy { Always, Never, ARMOnly, ThumbOnly }; - -static cl::opt<ImplicitItModeTy> ImplicitItMode( - "arm-implicit-it", cl::init(ImplicitItModeTy::ARMOnly), - cl::desc("Allow conditional instructions outdside of an IT block"), - cl::values(clEnumValN(ImplicitItModeTy::Always, "always", - "Accept in both ISAs, emit implicit ITs in Thumb"), - clEnumValN(ImplicitItModeTy::Never, "never", - "Warn in ARM, reject in Thumb"), - clEnumValN(ImplicitItModeTy::ARMOnly, "arm", - "Accept in ARM, reject in Thumb"), - clEnumValN(ImplicitItModeTy::ThumbOnly, "thumb", - "Warn in ARM, emit implicit ITs in Thumb"))); - -static cl::opt<bool> AddBuildAttributes("arm-add-build-attributes", - cl::init(false)); - -enum VectorLaneTy { NoLanes, AllLanes, IndexedLane }; - -class UnwindContext { - using Locs = SmallVector<SMLoc, 4>; - - MCAsmParser &Parser; - Locs FnStartLocs; - Locs CantUnwindLocs; - Locs PersonalityLocs; - Locs PersonalityIndexLocs; - Locs HandlerDataLocs; - int FPReg; - -public: - UnwindContext(MCAsmParser &P) : Parser(P), FPReg(ARM::SP) {} - - bool hasFnStart() const { return !FnStartLocs.empty(); } - bool cantUnwind() const { return !CantUnwindLocs.empty(); } - bool hasHandlerData() const { return !HandlerDataLocs.empty(); } - - bool hasPersonality() const { - return !(PersonalityLocs.empty() && PersonalityIndexLocs.empty()); - } - - void recordFnStart(SMLoc L) { FnStartLocs.push_back(L); } - void recordCantUnwind(SMLoc L) { CantUnwindLocs.push_back(L); } - void recordPersonality(SMLoc L) { PersonalityLocs.push_back(L); } - void recordHandlerData(SMLoc L) { HandlerDataLocs.push_back(L); } - void recordPersonalityIndex(SMLoc L) { PersonalityIndexLocs.push_back(L); } - - void saveFPReg(int Reg) { FPReg = Reg; } - int getFPReg() const { return FPReg; } - - void emitFnStartLocNotes() const { - for (Locs::const_iterator FI = FnStartLocs.begin(), FE = FnStartLocs.end(); - FI != FE; ++FI) - Parser.Note(*FI, ".fnstart was specified here"); - } - - void emitCantUnwindLocNotes() const { - for (Locs::const_iterator UI = CantUnwindLocs.begin(), - UE = CantUnwindLocs.end(); UI != UE; ++UI) - Parser.Note(*UI, ".cantunwind was specified here"); - } - - void emitHandlerDataLocNotes() const { - for (Locs::const_iterator HI = HandlerDataLocs.begin(), - HE = HandlerDataLocs.end(); HI != HE; ++HI) - Parser.Note(*HI, ".handlerdata was specified here"); - } - - void emitPersonalityLocNotes() const { - for (Locs::const_iterator PI = PersonalityLocs.begin(), - PE = PersonalityLocs.end(), - PII = PersonalityIndexLocs.begin(), - PIE = PersonalityIndexLocs.end(); - PI != PE || PII != PIE;) { - if (PI != PE && (PII == PIE || PI->getPointer() < PII->getPointer())) - Parser.Note(*PI++, ".personality was specified here"); - else if (PII != PIE && (PI == PE || PII->getPointer() < PI->getPointer())) - Parser.Note(*PII++, ".personalityindex was specified here"); - else - llvm_unreachable(".personality and .personalityindex cannot be " - "at the same location"); - } - } - - void reset() { - FnStartLocs = Locs(); - CantUnwindLocs = Locs(); - PersonalityLocs = Locs(); - HandlerDataLocs = Locs(); - PersonalityIndexLocs = Locs(); - FPReg = ARM::SP; - } -}; - -class ARMAsmParser : public MCTargetAsmParser { - const MCRegisterInfo *MRI; - UnwindContext UC; - - ARMTargetStreamer &getTargetStreamer() { - assert(getParser().getStreamer().getTargetStreamer() && - "do not have a target streamer"); - MCTargetStreamer &TS = *getParser().getStreamer().getTargetStreamer(); - return static_cast<ARMTargetStreamer &>(TS); - } - - // Map of register aliases registers via the .req directive. - StringMap<unsigned> RegisterReqs; - - bool NextSymbolIsThumb; - - bool useImplicitITThumb() const { - return ImplicitItMode == ImplicitItModeTy::Always || - ImplicitItMode == ImplicitItModeTy::ThumbOnly; - } - - bool useImplicitITARM() const { - return ImplicitItMode == ImplicitItModeTy::Always || - ImplicitItMode == ImplicitItModeTy::ARMOnly; - } - - struct { - ARMCC::CondCodes Cond; // Condition for IT block. - unsigned Mask:4; // Condition mask for instructions. - // Starting at first 1 (from lsb). - // '1' condition as indicated in IT. - // '0' inverse of condition (else). - // Count of instructions in IT block is - // 4 - trailingzeroes(mask) - // Note that this does not have the same encoding - // as in the IT instruction, which also depends - // on the low bit of the condition code. - - unsigned CurPosition; // Current position in parsing of IT - // block. In range [0,4], with 0 being the IT - // instruction itself. Initialized according to - // count of instructions in block. ~0U if no - // active IT block. - - bool IsExplicit; // true - The IT instruction was present in the - // input, we should not modify it. - // false - The IT instruction was added - // implicitly, we can extend it if that - // would be legal. - } ITState; - - SmallVector<MCInst, 4> PendingConditionalInsts; - - void flushPendingInstructions(MCStreamer &Out) override { - if (!inImplicitITBlock()) { - assert(PendingConditionalInsts.size() == 0); - return; - } - - // Emit the IT instruction - unsigned Mask = getITMaskEncoding(); - MCInst ITInst; - ITInst.setOpcode(ARM::t2IT); - ITInst.addOperand(MCOperand::createImm(ITState.Cond)); - ITInst.addOperand(MCOperand::createImm(Mask)); - Out.EmitInstruction(ITInst, getSTI()); - - // Emit the conditonal instructions - assert(PendingConditionalInsts.size() <= 4); - for (const MCInst &Inst : PendingConditionalInsts) { - Out.EmitInstruction(Inst, getSTI()); - } - PendingConditionalInsts.clear(); - - // Clear the IT state - ITState.Mask = 0; - ITState.CurPosition = ~0U; - } - - bool inITBlock() { return ITState.CurPosition != ~0U; } - bool inExplicitITBlock() { return inITBlock() && ITState.IsExplicit; } - bool inImplicitITBlock() { return inITBlock() && !ITState.IsExplicit; } - - bool lastInITBlock() { - return ITState.CurPosition == 4 - countTrailingZeros(ITState.Mask); - } - - void forwardITPosition() { - if (!inITBlock()) return; - // Move to the next instruction in the IT block, if there is one. If not, - // mark the block as done, except for implicit IT blocks, which we leave - // open until we find an instruction that can't be added to it. - unsigned TZ = countTrailingZeros(ITState.Mask); - if (++ITState.CurPosition == 5 - TZ && ITState.IsExplicit) - ITState.CurPosition = ~0U; // Done with the IT block after this. - } - - // Rewind the state of the current IT block, removing the last slot from it. - void rewindImplicitITPosition() { - assert(inImplicitITBlock()); - assert(ITState.CurPosition > 1); - ITState.CurPosition--; - unsigned TZ = countTrailingZeros(ITState.Mask); - unsigned NewMask = 0; - NewMask |= ITState.Mask & (0xC << TZ); - NewMask |= 0x2 << TZ; - ITState.Mask = NewMask; - } - - // Rewind the state of the current IT block, removing the last slot from it. - // If we were at the first slot, this closes the IT block. - void discardImplicitITBlock() { - assert(inImplicitITBlock()); - assert(ITState.CurPosition == 1); - ITState.CurPosition = ~0U; - } - - // Return the low-subreg of a given Q register. - unsigned getDRegFromQReg(unsigned QReg) const { - return MRI->getSubReg(QReg, ARM::dsub_0); - } - - // Get the encoding of the IT mask, as it will appear in an IT instruction. - unsigned getITMaskEncoding() { - assert(inITBlock()); - unsigned Mask = ITState.Mask; - unsigned TZ = countTrailingZeros(Mask); - if ((ITState.Cond & 1) == 0) { - assert(Mask && TZ <= 3 && "illegal IT mask value!"); - Mask ^= (0xE << TZ) & 0xF; - } - return Mask; - } - - // Get the condition code corresponding to the current IT block slot. - ARMCC::CondCodes currentITCond() { - unsigned MaskBit; - if (ITState.CurPosition == 1) - MaskBit = 1; - else - MaskBit = (ITState.Mask >> (5 - ITState.CurPosition)) & 1; - - return MaskBit ? ITState.Cond : ARMCC::getOppositeCondition(ITState.Cond); - } - - // Invert the condition of the current IT block slot without changing any - // other slots in the same block. - void invertCurrentITCondition() { - if (ITState.CurPosition == 1) { - ITState.Cond = ARMCC::getOppositeCondition(ITState.Cond); - } else { - ITState.Mask ^= 1 << (5 - ITState.CurPosition); - } - } - - // Returns true if the current IT block is full (all 4 slots used). - bool isITBlockFull() { - return inITBlock() && (ITState.Mask & 1); - } - - // Extend the current implicit IT block to have one more slot with the given - // condition code. - void extendImplicitITBlock(ARMCC::CondCodes Cond) { - assert(inImplicitITBlock()); - assert(!isITBlockFull()); - assert(Cond == ITState.Cond || - Cond == ARMCC::getOppositeCondition(ITState.Cond)); - unsigned TZ = countTrailingZeros(ITState.Mask); - unsigned NewMask = 0; - // Keep any existing condition bits. - NewMask |= ITState.Mask & (0xE << TZ); - // Insert the new condition bit. - NewMask |= (Cond == ITState.Cond) << TZ; - // Move the trailing 1 down one bit. - NewMask |= 1 << (TZ - 1); - ITState.Mask = NewMask; - } - - // Create a new implicit IT block with a dummy condition code. - void startImplicitITBlock() { - assert(!inITBlock()); - ITState.Cond = ARMCC::AL; - ITState.Mask = 8; - ITState.CurPosition = 1; - ITState.IsExplicit = false; - } - - // Create a new explicit IT block with the given condition and mask. The mask - // should be in the parsed format, with a 1 implying 't', regardless of the - // low bit of the condition. - void startExplicitITBlock(ARMCC::CondCodes Cond, unsigned Mask) { - assert(!inITBlock()); - ITState.Cond = Cond; - ITState.Mask = Mask; - ITState.CurPosition = 0; - ITState.IsExplicit = true; - } - - void Note(SMLoc L, const Twine &Msg, SMRange Range = None) { - return getParser().Note(L, Msg, Range); - } - - bool Warning(SMLoc L, const Twine &Msg, SMRange Range = None) { - return getParser().Warning(L, Msg, Range); - } - - bool Error(SMLoc L, const Twine &Msg, SMRange Range = None) { - return getParser().Error(L, Msg, Range); - } - - bool validatetLDMRegList(const MCInst &Inst, const OperandVector &Operands, - unsigned ListNo, bool IsARPop = false); - bool validatetSTMRegList(const MCInst &Inst, const OperandVector &Operands, - unsigned ListNo); - - int tryParseRegister(); - bool tryParseRegisterWithWriteBack(OperandVector &); - int tryParseShiftRegister(OperandVector &); - bool parseRegisterList(OperandVector &); - bool parseMemory(OperandVector &); - bool parseOperand(OperandVector &, StringRef Mnemonic); - bool parsePrefix(ARMMCExpr::VariantKind &RefKind); - bool parseMemRegOffsetShift(ARM_AM::ShiftOpc &ShiftType, - unsigned &ShiftAmount); - bool parseLiteralValues(unsigned Size, SMLoc L); - bool parseDirectiveThumb(SMLoc L); - bool parseDirectiveARM(SMLoc L); - bool parseDirectiveThumbFunc(SMLoc L); - bool parseDirectiveCode(SMLoc L); - bool parseDirectiveSyntax(SMLoc L); - bool parseDirectiveReq(StringRef Name, SMLoc L); - bool parseDirectiveUnreq(SMLoc L); - bool parseDirectiveArch(SMLoc L); - bool parseDirectiveEabiAttr(SMLoc L); - bool parseDirectiveCPU(SMLoc L); - bool parseDirectiveFPU(SMLoc L); - bool parseDirectiveFnStart(SMLoc L); - bool parseDirectiveFnEnd(SMLoc L); - bool parseDirectiveCantUnwind(SMLoc L); - bool parseDirectivePersonality(SMLoc L); - bool parseDirectiveHandlerData(SMLoc L); - bool parseDirectiveSetFP(SMLoc L); - bool parseDirectivePad(SMLoc L); - bool parseDirectiveRegSave(SMLoc L, bool IsVector); - bool parseDirectiveInst(SMLoc L, char Suffix = '\0'); - bool parseDirectiveLtorg(SMLoc L); - bool parseDirectiveEven(SMLoc L); - bool parseDirectivePersonalityIndex(SMLoc L); - bool parseDirectiveUnwindRaw(SMLoc L); - bool parseDirectiveTLSDescSeq(SMLoc L); - bool parseDirectiveMovSP(SMLoc L); - bool parseDirectiveObjectArch(SMLoc L); - bool parseDirectiveArchExtension(SMLoc L); - bool parseDirectiveAlign(SMLoc L); - bool parseDirectiveThumbSet(SMLoc L); - - StringRef splitMnemonic(StringRef Mnemonic, unsigned &PredicationCode, - bool &CarrySetting, unsigned &ProcessorIMod, - StringRef &ITMask); - void getMnemonicAcceptInfo(StringRef Mnemonic, StringRef FullInst, - bool &CanAcceptCarrySet, - bool &CanAcceptPredicationCode); - - void tryConvertingToTwoOperandForm(StringRef Mnemonic, bool CarrySetting, - OperandVector &Operands); - bool isThumb() const { - // FIXME: Can tablegen auto-generate this? - return getSTI().getFeatureBits()[ARM::ModeThumb]; - } - - bool isThumbOne() const { - return isThumb() && !getSTI().getFeatureBits()[ARM::FeatureThumb2]; - } - - bool isThumbTwo() const { - return isThumb() && getSTI().getFeatureBits()[ARM::FeatureThumb2]; - } - - bool hasThumb() const { - return getSTI().getFeatureBits()[ARM::HasV4TOps]; - } - - bool hasThumb2() const { - return getSTI().getFeatureBits()[ARM::FeatureThumb2]; - } - - bool hasV6Ops() const { - return getSTI().getFeatureBits()[ARM::HasV6Ops]; - } - - bool hasV6T2Ops() const { - return getSTI().getFeatureBits()[ARM::HasV6T2Ops]; - } - - bool hasV6MOps() const { - return getSTI().getFeatureBits()[ARM::HasV6MOps]; - } - - bool hasV7Ops() const { - return getSTI().getFeatureBits()[ARM::HasV7Ops]; - } - - bool hasV8Ops() const { - return getSTI().getFeatureBits()[ARM::HasV8Ops]; - } - - bool hasV8MBaseline() const { - return getSTI().getFeatureBits()[ARM::HasV8MBaselineOps]; - } - - bool hasV8MMainline() const { - return getSTI().getFeatureBits()[ARM::HasV8MMainlineOps]; - } - - bool has8MSecExt() const { - return getSTI().getFeatureBits()[ARM::Feature8MSecExt]; - } - - bool hasARM() const { - return !getSTI().getFeatureBits()[ARM::FeatureNoARM]; - } - - bool hasDSP() const { - return getSTI().getFeatureBits()[ARM::FeatureDSP]; - } - - bool hasD16() const { - return getSTI().getFeatureBits()[ARM::FeatureD16]; - } - - bool hasV8_1aOps() const { - return getSTI().getFeatureBits()[ARM::HasV8_1aOps]; - } - - bool hasRAS() const { - return getSTI().getFeatureBits()[ARM::FeatureRAS]; - } - - void SwitchMode() { - MCSubtargetInfo &STI = copySTI(); - uint64_t FB = ComputeAvailableFeatures(STI.ToggleFeature(ARM::ModeThumb)); - setAvailableFeatures(FB); - } - - void FixModeAfterArchChange(bool WasThumb, SMLoc Loc); - - bool isMClass() const { - return getSTI().getFeatureBits()[ARM::FeatureMClass]; - } - - /// @name Auto-generated Match Functions - /// { - -#define GET_ASSEMBLER_HEADER -#include "ARMGenAsmMatcher.inc" - - /// } - - OperandMatchResultTy parseITCondCode(OperandVector &); - OperandMatchResultTy parseCoprocNumOperand(OperandVector &); - OperandMatchResultTy parseCoprocRegOperand(OperandVector &); - OperandMatchResultTy parseCoprocOptionOperand(OperandVector &); - OperandMatchResultTy parseMemBarrierOptOperand(OperandVector &); - OperandMatchResultTy parseTraceSyncBarrierOptOperand(OperandVector &); - OperandMatchResultTy parseInstSyncBarrierOptOperand(OperandVector &); - OperandMatchResultTy parseProcIFlagsOperand(OperandVector &); - OperandMatchResultTy parseMSRMaskOperand(OperandVector &); - OperandMatchResultTy parseBankedRegOperand(OperandVector &); - OperandMatchResultTy parsePKHImm(OperandVector &O, StringRef Op, int Low, - int High); - OperandMatchResultTy parsePKHLSLImm(OperandVector &O) { - return parsePKHImm(O, "lsl", 0, 31); - } - OperandMatchResultTy parsePKHASRImm(OperandVector &O) { - return parsePKHImm(O, "asr", 1, 32); - } - OperandMatchResultTy parseSetEndImm(OperandVector &); - OperandMatchResultTy parseShifterImm(OperandVector &); - OperandMatchResultTy parseRotImm(OperandVector &); - OperandMatchResultTy parseModImm(OperandVector &); - OperandMatchResultTy parseBitfield(OperandVector &); - OperandMatchResultTy parsePostIdxReg(OperandVector &); - OperandMatchResultTy parseAM3Offset(OperandVector &); - OperandMatchResultTy parseFPImm(OperandVector &); - OperandMatchResultTy parseVectorList(OperandVector &); - OperandMatchResultTy parseVectorLane(VectorLaneTy &LaneKind, unsigned &Index, - SMLoc &EndLoc); - - // Asm Match Converter Methods - void cvtThumbMultiply(MCInst &Inst, const OperandVector &); - void cvtThumbBranches(MCInst &Inst, const OperandVector &); - - bool validateInstruction(MCInst &Inst, const OperandVector &Ops); - bool processInstruction(MCInst &Inst, const OperandVector &Ops, MCStreamer &Out); - bool shouldOmitCCOutOperand(StringRef Mnemonic, OperandVector &Operands); - bool shouldOmitPredicateOperand(StringRef Mnemonic, OperandVector &Operands); - bool isITBlockTerminator(MCInst &Inst) const; - void fixupGNULDRDAlias(StringRef Mnemonic, OperandVector &Operands); - bool validateLDRDSTRD(MCInst &Inst, const OperandVector &Operands, - bool Load, bool ARMMode, bool Writeback); - -public: - enum ARMMatchResultTy { - Match_RequiresITBlock = FIRST_TARGET_MATCH_RESULT_TY, - Match_RequiresNotITBlock, - Match_RequiresV6, - Match_RequiresThumb2, - Match_RequiresV8, - Match_RequiresFlagSetting, -#define GET_OPERAND_DIAGNOSTIC_TYPES -#include "ARMGenAsmMatcher.inc" - - }; - - ARMAsmParser(const MCSubtargetInfo &STI, MCAsmParser &Parser, - const MCInstrInfo &MII, const MCTargetOptions &Options) - : MCTargetAsmParser(Options, STI, MII), UC(Parser) { - MCAsmParserExtension::Initialize(Parser); - - // Cache the MCRegisterInfo. - MRI = getContext().getRegisterInfo(); - - // Initialize the set of available features. - setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits())); - - // Add build attributes based on the selected target. - if (AddBuildAttributes) - getTargetStreamer().emitTargetAttributes(STI); - - // Not in an ITBlock to start with. - ITState.CurPosition = ~0U; - - NextSymbolIsThumb = false; - } - - // Implementation of the MCTargetAsmParser interface: - bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc) override; - bool ParseInstruction(ParseInstructionInfo &Info, StringRef Name, - SMLoc NameLoc, OperandVector &Operands) override; - bool ParseDirective(AsmToken DirectiveID) override; - - unsigned validateTargetOperandClass(MCParsedAsmOperand &Op, - unsigned Kind) override; - unsigned checkTargetMatchPredicate(MCInst &Inst) override; - - bool MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode, - OperandVector &Operands, MCStreamer &Out, - uint64_t &ErrorInfo, - bool MatchingInlineAsm) override; - unsigned MatchInstruction(OperandVector &Operands, MCInst &Inst, - SmallVectorImpl<NearMissInfo> &NearMisses, - bool MatchingInlineAsm, bool &EmitInITBlock, - MCStreamer &Out); - - struct NearMissMessage { - SMLoc Loc; - SmallString<128> Message; - }; - - const char *getCustomOperandDiag(ARMMatchResultTy MatchError); - - void FilterNearMisses(SmallVectorImpl<NearMissInfo> &NearMissesIn, - SmallVectorImpl<NearMissMessage> &NearMissesOut, - SMLoc IDLoc, OperandVector &Operands); - void ReportNearMisses(SmallVectorImpl<NearMissInfo> &NearMisses, SMLoc IDLoc, - OperandVector &Operands); - - void doBeforeLabelEmit(MCSymbol *Symbol) override; - - void onLabelParsed(MCSymbol *Symbol) override; -}; - -/// ARMOperand - Instances of this class represent a parsed ARM machine -/// operand. -class ARMOperand : public MCParsedAsmOperand { - enum KindTy { - k_CondCode, - k_CCOut, - k_ITCondMask, - k_CoprocNum, - k_CoprocReg, - k_CoprocOption, - k_Immediate, - k_MemBarrierOpt, - k_InstSyncBarrierOpt, - k_TraceSyncBarrierOpt, - k_Memory, - k_PostIndexRegister, - k_MSRMask, - k_BankedReg, - k_ProcIFlags, - k_VectorIndex, - k_Register, - k_RegisterList, - k_DPRRegisterList, - k_SPRRegisterList, - k_VectorList, - k_VectorListAllLanes, - k_VectorListIndexed, - k_ShiftedRegister, - k_ShiftedImmediate, - k_ShifterImmediate, - k_RotateImmediate, - k_ModifiedImmediate, - k_ConstantPoolImmediate, - k_BitfieldDescriptor, - k_Token, - } Kind; - - SMLoc StartLoc, EndLoc, AlignmentLoc; - SmallVector<unsigned, 8> Registers; - - struct CCOp { - ARMCC::CondCodes Val; - }; - - struct CopOp { - unsigned Val; - }; - - struct CoprocOptionOp { - unsigned Val; - }; - - struct ITMaskOp { - unsigned Mask:4; - }; - - struct MBOptOp { - ARM_MB::MemBOpt Val; - }; - - struct ISBOptOp { - ARM_ISB::InstSyncBOpt Val; - }; - - struct TSBOptOp { - ARM_TSB::TraceSyncBOpt Val; - }; - - struct IFlagsOp { - ARM_PROC::IFlags Val; - }; - - struct MMaskOp { - unsigned Val; - }; - - struct BankedRegOp { - unsigned Val; - }; - - struct TokOp { - const char *Data; - unsigned Length; - }; - - struct RegOp { - unsigned RegNum; - }; - - // A vector register list is a sequential list of 1 to 4 registers. - struct VectorListOp { - unsigned RegNum; - unsigned Count; - unsigned LaneIndex; - bool isDoubleSpaced; - }; - - struct VectorIndexOp { - unsigned Val; - }; - - struct ImmOp { - const MCExpr *Val; - }; - - /// Combined record for all forms of ARM address expressions. - struct MemoryOp { - unsigned BaseRegNum; - // Offset is in OffsetReg or OffsetImm. If both are zero, no offset - // was specified. - const MCConstantExpr *OffsetImm; // Offset immediate value - unsigned OffsetRegNum; // Offset register num, when OffsetImm == NULL - ARM_AM::ShiftOpc ShiftType; // Shift type for OffsetReg - unsigned ShiftImm; // shift for OffsetReg. - unsigned Alignment; // 0 = no alignment specified - // n = alignment in bytes (2, 4, 8, 16, or 32) - unsigned isNegative : 1; // Negated OffsetReg? (~'U' bit) - }; - - struct PostIdxRegOp { - unsigned RegNum; - bool isAdd; - ARM_AM::ShiftOpc ShiftTy; - unsigned ShiftImm; - }; - - struct ShifterImmOp { - bool isASR; - unsigned Imm; - }; - - struct RegShiftedRegOp { - ARM_AM::ShiftOpc ShiftTy; - unsigned SrcReg; - unsigned ShiftReg; - unsigned ShiftImm; - }; - - struct RegShiftedImmOp { - ARM_AM::ShiftOpc ShiftTy; - unsigned SrcReg; - unsigned ShiftImm; - }; - - struct RotImmOp { - unsigned Imm; - }; - - struct ModImmOp { - unsigned Bits; - unsigned Rot; - }; - - struct BitfieldOp { - unsigned LSB; - unsigned Width; - }; - - union { - struct CCOp CC; - struct CopOp Cop; - struct CoprocOptionOp CoprocOption; - struct MBOptOp MBOpt; - struct ISBOptOp ISBOpt; - struct TSBOptOp TSBOpt; - struct ITMaskOp ITMask; - struct IFlagsOp IFlags; - struct MMaskOp MMask; - struct BankedRegOp BankedReg; - struct TokOp Tok; - struct RegOp Reg; - struct VectorListOp VectorList; - struct VectorIndexOp VectorIndex; - struct ImmOp Imm; - struct MemoryOp Memory; - struct PostIdxRegOp PostIdxReg; - struct ShifterImmOp ShifterImm; - struct RegShiftedRegOp RegShiftedReg; - struct RegShiftedImmOp RegShiftedImm; - struct RotImmOp RotImm; - struct ModImmOp ModImm; - struct BitfieldOp Bitfield; - }; - -public: - ARMOperand(KindTy K) : MCParsedAsmOperand(), Kind(K) {} - - /// getStartLoc - Get the location of the first token of this operand. - SMLoc getStartLoc() const override { return StartLoc; } - - /// getEndLoc - Get the location of the last token of this operand. - SMLoc getEndLoc() const override { return EndLoc; } - - /// getLocRange - Get the range between the first and last token of this - /// operand. - SMRange getLocRange() const { return SMRange(StartLoc, EndLoc); } - - /// getAlignmentLoc - Get the location of the Alignment token of this operand. - SMLoc getAlignmentLoc() const { - assert(Kind == k_Memory && "Invalid access!"); - return AlignmentLoc; - } - - ARMCC::CondCodes getCondCode() const { - assert(Kind == k_CondCode && "Invalid access!"); - return CC.Val; - } - - unsigned getCoproc() const { - assert((Kind == k_CoprocNum || Kind == k_CoprocReg) && "Invalid access!"); - return Cop.Val; - } - - StringRef getToken() const { - assert(Kind == k_Token && "Invalid access!"); - return StringRef(Tok.Data, Tok.Length); - } - - unsigned getReg() const override { - assert((Kind == k_Register || Kind == k_CCOut) && "Invalid access!"); - return Reg.RegNum; - } - - const SmallVectorImpl<unsigned> &getRegList() const { - assert((Kind == k_RegisterList || Kind == k_DPRRegisterList || - Kind == k_SPRRegisterList) && "Invalid access!"); - return Registers; - } - - const MCExpr *getImm() const { - assert(isImm() && "Invalid access!"); - return Imm.Val; - } - - const MCExpr *getConstantPoolImm() const { - assert(isConstantPoolImm() && "Invalid access!"); - return Imm.Val; - } - - unsigned getVectorIndex() const { - assert(Kind == k_VectorIndex && "Invalid access!"); - return VectorIndex.Val; - } - - ARM_MB::MemBOpt getMemBarrierOpt() const { - assert(Kind == k_MemBarrierOpt && "Invalid access!"); - return MBOpt.Val; - } - - ARM_ISB::InstSyncBOpt getInstSyncBarrierOpt() const { - assert(Kind == k_InstSyncBarrierOpt && "Invalid access!"); - return ISBOpt.Val; - } - - ARM_TSB::TraceSyncBOpt getTraceSyncBarrierOpt() const { - assert(Kind == k_TraceSyncBarrierOpt && "Invalid access!"); - return TSBOpt.Val; - } - - ARM_PROC::IFlags getProcIFlags() const { - assert(Kind == k_ProcIFlags && "Invalid access!"); - return IFlags.Val; - } - - unsigned getMSRMask() const { - assert(Kind == k_MSRMask && "Invalid access!"); - return MMask.Val; - } - - unsigned getBankedReg() const { - assert(Kind == k_BankedReg && "Invalid access!"); - return BankedReg.Val; - } - - bool isCoprocNum() const { return Kind == k_CoprocNum; } - bool isCoprocReg() const { return Kind == k_CoprocReg; } - bool isCoprocOption() const { return Kind == k_CoprocOption; } - bool isCondCode() const { return Kind == k_CondCode; } - bool isCCOut() const { return Kind == k_CCOut; } - bool isITMask() const { return Kind == k_ITCondMask; } - bool isITCondCode() const { return Kind == k_CondCode; } - bool isImm() const override { - return Kind == k_Immediate; - } - - bool isARMBranchTarget() const { - if (!isImm()) return false; - - if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm())) - return CE->getValue() % 4 == 0; - return true; - } - - - bool isThumbBranchTarget() const { - if (!isImm()) return false; - - if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm())) - return CE->getValue() % 2 == 0; - return true; - } - - // checks whether this operand is an unsigned offset which fits is a field - // of specified width and scaled by a specific number of bits - template<unsigned width, unsigned scale> - bool isUnsignedOffset() const { - if (!isImm()) return false; - if (isa<MCSymbolRefExpr>(Imm.Val)) return true; - if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm.Val)) { - int64_t Val = CE->getValue(); - int64_t Align = 1LL << scale; - int64_t Max = Align * ((1LL << width) - 1); - return ((Val % Align) == 0) && (Val >= 0) && (Val <= Max); - } - return false; - } - - // checks whether this operand is an signed offset which fits is a field - // of specified width and scaled by a specific number of bits - template<unsigned width, unsigned scale> - bool isSignedOffset() const { - if (!isImm()) return false; - if (isa<MCSymbolRefExpr>(Imm.Val)) return true; - if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm.Val)) { - int64_t Val = CE->getValue(); - int64_t Align = 1LL << scale; - int64_t Max = Align * ((1LL << (width-1)) - 1); - int64_t Min = -Align * (1LL << (width-1)); - return ((Val % Align) == 0) && (Val >= Min) && (Val <= Max); - } - return false; - } - - // checks whether this operand is a memory operand computed as an offset - // applied to PC. the offset may have 8 bits of magnitude and is represented - // with two bits of shift. textually it may be either [pc, #imm], #imm or - // relocable expression... - bool isThumbMemPC() const { - int64_t Val = 0; - if (isImm()) { - if (isa<MCSymbolRefExpr>(Imm.Val)) return true; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm.Val); - if (!CE) return false; - Val = CE->getValue(); - } - else if (isMem()) { - if(!Memory.OffsetImm || Memory.OffsetRegNum) return false; - if(Memory.BaseRegNum != ARM::PC) return false; - Val = Memory.OffsetImm->getValue(); - } - else return false; - return ((Val % 4) == 0) && (Val >= 0) && (Val <= 1020); - } - - bool isFPImm() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - int Val = ARM_AM::getFP32Imm(APInt(32, CE->getValue())); - return Val != -1; - } - - template<int64_t N, int64_t M> - bool isImmediate() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - int64_t Value = CE->getValue(); - return Value >= N && Value <= M; - } - - template<int64_t N, int64_t M> - bool isImmediateS4() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - int64_t Value = CE->getValue(); - return ((Value & 3) == 0) && Value >= N && Value <= M; - } - - bool isFBits16() const { - return isImmediate<0, 17>(); - } - bool isFBits32() const { - return isImmediate<1, 33>(); - } - bool isImm8s4() const { - return isImmediateS4<-1020, 1020>(); - } - bool isImm0_1020s4() const { - return isImmediateS4<0, 1020>(); - } - bool isImm0_508s4() const { - return isImmediateS4<0, 508>(); - } - bool isImm0_508s4Neg() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - int64_t Value = -CE->getValue(); - // explicitly exclude zero. we want that to use the normal 0_508 version. - return ((Value & 3) == 0) && Value > 0 && Value <= 508; - } - - bool isImm0_4095Neg() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - // isImm0_4095Neg is used with 32-bit immediates only. - // 32-bit immediates are zero extended to 64-bit when parsed, - // thus simple -CE->getValue() results in a big negative number, - // not a small positive number as intended - if ((CE->getValue() >> 32) > 0) return false; - uint32_t Value = -static_cast<uint32_t>(CE->getValue()); - return Value > 0 && Value < 4096; - } - - bool isImm0_7() const { - return isImmediate<0, 7>(); - } - - bool isImm1_16() const { - return isImmediate<1, 16>(); - } - - bool isImm1_32() const { - return isImmediate<1, 32>(); - } - - bool isImm8_255() const { - return isImmediate<8, 255>(); - } - - bool isImm256_65535Expr() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - // If it's not a constant expression, it'll generate a fixup and be - // handled later. - if (!CE) return true; - int64_t Value = CE->getValue(); - return Value >= 256 && Value < 65536; - } - - bool isImm0_65535Expr() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - // If it's not a constant expression, it'll generate a fixup and be - // handled later. - if (!CE) return true; - int64_t Value = CE->getValue(); - return Value >= 0 && Value < 65536; - } - - bool isImm24bit() const { - return isImmediate<0, 0xffffff + 1>(); - } - - bool isImmThumbSR() const { - return isImmediate<1, 33>(); - } - - bool isPKHLSLImm() const { - return isImmediate<0, 32>(); - } - - bool isPKHASRImm() const { - return isImmediate<0, 33>(); - } - - bool isAdrLabel() const { - // If we have an immediate that's not a constant, treat it as a label - // reference needing a fixup. - if (isImm() && !isa<MCConstantExpr>(getImm())) - return true; - - // If it is a constant, it must fit into a modified immediate encoding. - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - int64_t Value = CE->getValue(); - return (ARM_AM::getSOImmVal(Value) != -1 || - ARM_AM::getSOImmVal(-Value) != -1); - } - - bool isT2SOImm() const { - // If we have an immediate that's not a constant, treat it as an expression - // needing a fixup. - if (isImm() && !isa<MCConstantExpr>(getImm())) { - // We want to avoid matching :upper16: and :lower16: as we want these - // expressions to match in isImm0_65535Expr() - const ARMMCExpr *ARM16Expr = dyn_cast<ARMMCExpr>(getImm()); - return (!ARM16Expr || (ARM16Expr->getKind() != ARMMCExpr::VK_ARM_HI16 && - ARM16Expr->getKind() != ARMMCExpr::VK_ARM_LO16)); - } - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - int64_t Value = CE->getValue(); - return ARM_AM::getT2SOImmVal(Value) != -1; - } - - bool isT2SOImmNot() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - int64_t Value = CE->getValue(); - return ARM_AM::getT2SOImmVal(Value) == -1 && - ARM_AM::getT2SOImmVal(~Value) != -1; - } - - bool isT2SOImmNeg() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - int64_t Value = CE->getValue(); - // Only use this when not representable as a plain so_imm. - return ARM_AM::getT2SOImmVal(Value) == -1 && - ARM_AM::getT2SOImmVal(-Value) != -1; - } - - bool isSetEndImm() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - int64_t Value = CE->getValue(); - return Value == 1 || Value == 0; - } - - bool isReg() const override { return Kind == k_Register; } - bool isRegList() const { return Kind == k_RegisterList; } - bool isDPRRegList() const { return Kind == k_DPRRegisterList; } - bool isSPRRegList() const { return Kind == k_SPRRegisterList; } - bool isToken() const override { return Kind == k_Token; } - bool isMemBarrierOpt() const { return Kind == k_MemBarrierOpt; } - bool isInstSyncBarrierOpt() const { return Kind == k_InstSyncBarrierOpt; } - bool isTraceSyncBarrierOpt() const { return Kind == k_TraceSyncBarrierOpt; } - bool isMem() const override { - if (Kind != k_Memory) - return false; - if (Memory.BaseRegNum && - !ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Memory.BaseRegNum)) - return false; - if (Memory.OffsetRegNum && - !ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Memory.OffsetRegNum)) - return false; - return true; - } - bool isShifterImm() const { return Kind == k_ShifterImmediate; } - bool isRegShiftedReg() const { - return Kind == k_ShiftedRegister && - ARMMCRegisterClasses[ARM::GPRRegClassID].contains( - RegShiftedReg.SrcReg) && - ARMMCRegisterClasses[ARM::GPRRegClassID].contains( - RegShiftedReg.ShiftReg); - } - bool isRegShiftedImm() const { - return Kind == k_ShiftedImmediate && - ARMMCRegisterClasses[ARM::GPRRegClassID].contains( - RegShiftedImm.SrcReg); - } - bool isRotImm() const { return Kind == k_RotateImmediate; } - bool isModImm() const { return Kind == k_ModifiedImmediate; } - - bool isModImmNot() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - int64_t Value = CE->getValue(); - return ARM_AM::getSOImmVal(~Value) != -1; - } - - bool isModImmNeg() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - int64_t Value = CE->getValue(); - return ARM_AM::getSOImmVal(Value) == -1 && - ARM_AM::getSOImmVal(-Value) != -1; - } - - bool isThumbModImmNeg1_7() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - int32_t Value = -(int32_t)CE->getValue(); - return 0 < Value && Value < 8; - } - - bool isThumbModImmNeg8_255() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - int32_t Value = -(int32_t)CE->getValue(); - return 7 < Value && Value < 256; - } - - bool isConstantPoolImm() const { return Kind == k_ConstantPoolImmediate; } - bool isBitfield() const { return Kind == k_BitfieldDescriptor; } - bool isPostIdxRegShifted() const { - return Kind == k_PostIndexRegister && - ARMMCRegisterClasses[ARM::GPRRegClassID].contains(PostIdxReg.RegNum); - } - bool isPostIdxReg() const { - return isPostIdxRegShifted() && PostIdxReg.ShiftTy == ARM_AM::no_shift; - } - bool isMemNoOffset(bool alignOK = false, unsigned Alignment = 0) const { - if (!isMem()) - return false; - // No offset of any kind. - return Memory.OffsetRegNum == 0 && Memory.OffsetImm == nullptr && - (alignOK || Memory.Alignment == Alignment); - } - bool isMemPCRelImm12() const { - if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0) - return false; - // Base register must be PC. - if (Memory.BaseRegNum != ARM::PC) - return false; - // Immediate offset in range [-4095, 4095]. - if (!Memory.OffsetImm) return true; - int64_t Val = Memory.OffsetImm->getValue(); - return (Val > -4096 && Val < 4096) || - (Val == std::numeric_limits<int32_t>::min()); - } - - bool isAlignedMemory() const { - return isMemNoOffset(true); - } - - bool isAlignedMemoryNone() const { - return isMemNoOffset(false, 0); - } - - bool isDupAlignedMemoryNone() const { - return isMemNoOffset(false, 0); - } - - bool isAlignedMemory16() const { - if (isMemNoOffset(false, 2)) // alignment in bytes for 16-bits is 2. - return true; - return isMemNoOffset(false, 0); - } - - bool isDupAlignedMemory16() const { - if (isMemNoOffset(false, 2)) // alignment in bytes for 16-bits is 2. - return true; - return isMemNoOffset(false, 0); - } - - bool isAlignedMemory32() const { - if (isMemNoOffset(false, 4)) // alignment in bytes for 32-bits is 4. - return true; - return isMemNoOffset(false, 0); - } - - bool isDupAlignedMemory32() const { - if (isMemNoOffset(false, 4)) // alignment in bytes for 32-bits is 4. - return true; - return isMemNoOffset(false, 0); - } - - bool isAlignedMemory64() const { - if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8. - return true; - return isMemNoOffset(false, 0); - } - - bool isDupAlignedMemory64() const { - if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8. - return true; - return isMemNoOffset(false, 0); - } - - bool isAlignedMemory64or128() const { - if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8. - return true; - if (isMemNoOffset(false, 16)) // alignment in bytes for 128-bits is 16. - return true; - return isMemNoOffset(false, 0); - } - - bool isDupAlignedMemory64or128() const { - if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8. - return true; - if (isMemNoOffset(false, 16)) // alignment in bytes for 128-bits is 16. - return true; - return isMemNoOffset(false, 0); - } - - bool isAlignedMemory64or128or256() const { - if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8. - return true; - if (isMemNoOffset(false, 16)) // alignment in bytes for 128-bits is 16. - return true; - if (isMemNoOffset(false, 32)) // alignment in bytes for 256-bits is 32. - return true; - return isMemNoOffset(false, 0); - } - - bool isAddrMode2() const { - if (!isMem() || Memory.Alignment != 0) return false; - // Check for register offset. - if (Memory.OffsetRegNum) return true; - // Immediate offset in range [-4095, 4095]. - if (!Memory.OffsetImm) return true; - int64_t Val = Memory.OffsetImm->getValue(); - return Val > -4096 && Val < 4096; - } - - bool isAM2OffsetImm() const { - if (!isImm()) return false; - // Immediate offset in range [-4095, 4095]. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - int64_t Val = CE->getValue(); - return (Val == std::numeric_limits<int32_t>::min()) || - (Val > -4096 && Val < 4096); - } - - bool isAddrMode3() const { - // If we have an immediate that's not a constant, treat it as a label - // reference needing a fixup. If it is a constant, it's something else - // and we reject it. - if (isImm() && !isa<MCConstantExpr>(getImm())) - return true; - if (!isMem() || Memory.Alignment != 0) return false; - // No shifts are legal for AM3. - if (Memory.ShiftType != ARM_AM::no_shift) return false; - // Check for register offset. - if (Memory.OffsetRegNum) return true; - // Immediate offset in range [-255, 255]. - if (!Memory.OffsetImm) return true; - int64_t Val = Memory.OffsetImm->getValue(); - // The #-0 offset is encoded as std::numeric_limits<int32_t>::min(), and we - // have to check for this too. - return (Val > -256 && Val < 256) || - Val == std::numeric_limits<int32_t>::min(); - } - - bool isAM3Offset() const { - if (isPostIdxReg()) - return true; - if (!isImm()) - return false; - // Immediate offset in range [-255, 255]. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - int64_t Val = CE->getValue(); - // Special case, #-0 is std::numeric_limits<int32_t>::min(). - return (Val > -256 && Val < 256) || - Val == std::numeric_limits<int32_t>::min(); - } - - bool isAddrMode5() const { - // If we have an immediate that's not a constant, treat it as a label - // reference needing a fixup. If it is a constant, it's something else - // and we reject it. - if (isImm() && !isa<MCConstantExpr>(getImm())) - return true; - if (!isMem() || Memory.Alignment != 0) return false; - // Check for register offset. - if (Memory.OffsetRegNum) return false; - // Immediate offset in range [-1020, 1020] and a multiple of 4. - if (!Memory.OffsetImm) return true; - int64_t Val = Memory.OffsetImm->getValue(); - return (Val >= -1020 && Val <= 1020 && ((Val & 3) == 0)) || - Val == std::numeric_limits<int32_t>::min(); - } - - bool isAddrMode5FP16() const { - // If we have an immediate that's not a constant, treat it as a label - // reference needing a fixup. If it is a constant, it's something else - // and we reject it. - if (isImm() && !isa<MCConstantExpr>(getImm())) - return true; - if (!isMem() || Memory.Alignment != 0) return false; - // Check for register offset. - if (Memory.OffsetRegNum) return false; - // Immediate offset in range [-510, 510] and a multiple of 2. - if (!Memory.OffsetImm) return true; - int64_t Val = Memory.OffsetImm->getValue(); - return (Val >= -510 && Val <= 510 && ((Val & 1) == 0)) || - Val == std::numeric_limits<int32_t>::min(); - } - - bool isMemTBB() const { - if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative || - Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0) - return false; - return true; - } - - bool isMemTBH() const { - if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative || - Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm != 1 || - Memory.Alignment != 0 ) - return false; - return true; - } - - bool isMemRegOffset() const { - if (!isMem() || !Memory.OffsetRegNum || Memory.Alignment != 0) - return false; - return true; - } - - bool isT2MemRegOffset() const { - if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative || - Memory.Alignment != 0 || Memory.BaseRegNum == ARM::PC) - return false; - // Only lsl #{0, 1, 2, 3} allowed. - if (Memory.ShiftType == ARM_AM::no_shift) - return true; - if (Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm > 3) - return false; - return true; - } - - bool isMemThumbRR() const { - // Thumb reg+reg addressing is simple. Just two registers, a base and - // an offset. No shifts, negations or any other complicating factors. - if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative || - Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0) - return false; - return isARMLowRegister(Memory.BaseRegNum) && - (!Memory.OffsetRegNum || isARMLowRegister(Memory.OffsetRegNum)); - } - - bool isMemThumbRIs4() const { - if (!isMem() || Memory.OffsetRegNum != 0 || - !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0) - return false; - // Immediate offset, multiple of 4 in range [0, 124]. - if (!Memory.OffsetImm) return true; - int64_t Val = Memory.OffsetImm->getValue(); - return Val >= 0 && Val <= 124 && (Val % 4) == 0; - } - - bool isMemThumbRIs2() const { - if (!isMem() || Memory.OffsetRegNum != 0 || - !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0) - return false; - // Immediate offset, multiple of 4 in range [0, 62]. - if (!Memory.OffsetImm) return true; - int64_t Val = Memory.OffsetImm->getValue(); - return Val >= 0 && Val <= 62 && (Val % 2) == 0; - } - - bool isMemThumbRIs1() const { - if (!isMem() || Memory.OffsetRegNum != 0 || - !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0) - return false; - // Immediate offset in range [0, 31]. - if (!Memory.OffsetImm) return true; - int64_t Val = Memory.OffsetImm->getValue(); - return Val >= 0 && Val <= 31; - } - - bool isMemThumbSPI() const { - if (!isMem() || Memory.OffsetRegNum != 0 || - Memory.BaseRegNum != ARM::SP || Memory.Alignment != 0) - return false; - // Immediate offset, multiple of 4 in range [0, 1020]. - if (!Memory.OffsetImm) return true; - int64_t Val = Memory.OffsetImm->getValue(); - return Val >= 0 && Val <= 1020 && (Val % 4) == 0; - } - - bool isMemImm8s4Offset() const { - // If we have an immediate that's not a constant, treat it as a label - // reference needing a fixup. If it is a constant, it's something else - // and we reject it. - if (isImm() && !isa<MCConstantExpr>(getImm())) - return true; - if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0) - return false; - // Immediate offset a multiple of 4 in range [-1020, 1020]. - if (!Memory.OffsetImm) return true; - int64_t Val = Memory.OffsetImm->getValue(); - // Special case, #-0 is std::numeric_limits<int32_t>::min(). - return (Val >= -1020 && Val <= 1020 && (Val & 3) == 0) || - Val == std::numeric_limits<int32_t>::min(); - } - - bool isMemImm0_1020s4Offset() const { - if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0) - return false; - // Immediate offset a multiple of 4 in range [0, 1020]. - if (!Memory.OffsetImm) return true; - int64_t Val = Memory.OffsetImm->getValue(); - return Val >= 0 && Val <= 1020 && (Val & 3) == 0; - } - - bool isMemImm8Offset() const { - if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0) - return false; - // Base reg of PC isn't allowed for these encodings. - if (Memory.BaseRegNum == ARM::PC) return false; - // Immediate offset in range [-255, 255]. - if (!Memory.OffsetImm) return true; - int64_t Val = Memory.OffsetImm->getValue(); - return (Val == std::numeric_limits<int32_t>::min()) || - (Val > -256 && Val < 256); - } - - bool isMemPosImm8Offset() const { - if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0) - return false; - // Immediate offset in range [0, 255]. - if (!Memory.OffsetImm) return true; - int64_t Val = Memory.OffsetImm->getValue(); - return Val >= 0 && Val < 256; - } - - bool isMemNegImm8Offset() const { - if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0) - return false; - // Base reg of PC isn't allowed for these encodings. - if (Memory.BaseRegNum == ARM::PC) return false; - // Immediate offset in range [-255, -1]. - if (!Memory.OffsetImm) return false; - int64_t Val = Memory.OffsetImm->getValue(); - return (Val == std::numeric_limits<int32_t>::min()) || - (Val > -256 && Val < 0); - } - - bool isMemUImm12Offset() const { - if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0) - return false; - // Immediate offset in range [0, 4095]. - if (!Memory.OffsetImm) return true; - int64_t Val = Memory.OffsetImm->getValue(); - return (Val >= 0 && Val < 4096); - } - - bool isMemImm12Offset() const { - // If we have an immediate that's not a constant, treat it as a label - // reference needing a fixup. If it is a constant, it's something else - // and we reject it. - - if (isImm() && !isa<MCConstantExpr>(getImm())) - return true; - - if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0) - return false; - // Immediate offset in range [-4095, 4095]. - if (!Memory.OffsetImm) return true; - int64_t Val = Memory.OffsetImm->getValue(); - return (Val > -4096 && Val < 4096) || - (Val == std::numeric_limits<int32_t>::min()); - } - - bool isConstPoolAsmImm() const { - // Delay processing of Constant Pool Immediate, this will turn into - // a constant. Match no other operand - return (isConstantPoolImm()); - } - - bool isPostIdxImm8() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - int64_t Val = CE->getValue(); - return (Val > -256 && Val < 256) || - (Val == std::numeric_limits<int32_t>::min()); - } - - bool isPostIdxImm8s4() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - int64_t Val = CE->getValue(); - return ((Val & 3) == 0 && Val >= -1020 && Val <= 1020) || - (Val == std::numeric_limits<int32_t>::min()); - } - - bool isMSRMask() const { return Kind == k_MSRMask; } - bool isBankedReg() const { return Kind == k_BankedReg; } - bool isProcIFlags() const { return Kind == k_ProcIFlags; } - - // NEON operands. - bool isSingleSpacedVectorList() const { - return Kind == k_VectorList && !VectorList.isDoubleSpaced; - } - - bool isDoubleSpacedVectorList() const { - return Kind == k_VectorList && VectorList.isDoubleSpaced; - } - - bool isVecListOneD() const { - if (!isSingleSpacedVectorList()) return false; - return VectorList.Count == 1; - } - - bool isVecListDPair() const { - if (!isSingleSpacedVectorList()) return false; - return (ARMMCRegisterClasses[ARM::DPairRegClassID] - .contains(VectorList.RegNum)); - } - - bool isVecListThreeD() const { - if (!isSingleSpacedVectorList()) return false; - return VectorList.Count == 3; - } - - bool isVecListFourD() const { - if (!isSingleSpacedVectorList()) return false; - return VectorList.Count == 4; - } - - bool isVecListDPairSpaced() const { - if (Kind != k_VectorList) return false; - if (isSingleSpacedVectorList()) return false; - return (ARMMCRegisterClasses[ARM::DPairSpcRegClassID] - .contains(VectorList.RegNum)); - } - - bool isVecListThreeQ() const { - if (!isDoubleSpacedVectorList()) return false; - return VectorList.Count == 3; - } - - bool isVecListFourQ() const { - if (!isDoubleSpacedVectorList()) return false; - return VectorList.Count == 4; - } - - bool isSingleSpacedVectorAllLanes() const { - return Kind == k_VectorListAllLanes && !VectorList.isDoubleSpaced; - } - - bool isDoubleSpacedVectorAllLanes() const { - return Kind == k_VectorListAllLanes && VectorList.isDoubleSpaced; - } - - bool isVecListOneDAllLanes() const { - if (!isSingleSpacedVectorAllLanes()) return false; - return VectorList.Count == 1; - } - - bool isVecListDPairAllLanes() const { - if (!isSingleSpacedVectorAllLanes()) return false; - return (ARMMCRegisterClasses[ARM::DPairRegClassID] - .contains(VectorList.RegNum)); - } - - bool isVecListDPairSpacedAllLanes() const { - if (!isDoubleSpacedVectorAllLanes()) return false; - return VectorList.Count == 2; - } - - bool isVecListThreeDAllLanes() const { - if (!isSingleSpacedVectorAllLanes()) return false; - return VectorList.Count == 3; - } - - bool isVecListThreeQAllLanes() const { - if (!isDoubleSpacedVectorAllLanes()) return false; - return VectorList.Count == 3; - } - - bool isVecListFourDAllLanes() const { - if (!isSingleSpacedVectorAllLanes()) return false; - return VectorList.Count == 4; - } - - bool isVecListFourQAllLanes() const { - if (!isDoubleSpacedVectorAllLanes()) return false; - return VectorList.Count == 4; - } - - bool isSingleSpacedVectorIndexed() const { - return Kind == k_VectorListIndexed && !VectorList.isDoubleSpaced; - } - - bool isDoubleSpacedVectorIndexed() const { - return Kind == k_VectorListIndexed && VectorList.isDoubleSpaced; - } - - bool isVecListOneDByteIndexed() const { - if (!isSingleSpacedVectorIndexed()) return false; - return VectorList.Count == 1 && VectorList.LaneIndex <= 7; - } - - bool isVecListOneDHWordIndexed() const { - if (!isSingleSpacedVectorIndexed()) return false; - return VectorList.Count == 1 && VectorList.LaneIndex <= 3; - } - - bool isVecListOneDWordIndexed() const { - if (!isSingleSpacedVectorIndexed()) return false; - return VectorList.Count == 1 && VectorList.LaneIndex <= 1; - } - - bool isVecListTwoDByteIndexed() const { - if (!isSingleSpacedVectorIndexed()) return false; - return VectorList.Count == 2 && VectorList.LaneIndex <= 7; - } - - bool isVecListTwoDHWordIndexed() const { - if (!isSingleSpacedVectorIndexed()) return false; - return VectorList.Count == 2 && VectorList.LaneIndex <= 3; - } - - bool isVecListTwoQWordIndexed() const { - if (!isDoubleSpacedVectorIndexed()) return false; - return VectorList.Count == 2 && VectorList.LaneIndex <= 1; - } - - bool isVecListTwoQHWordIndexed() const { - if (!isDoubleSpacedVectorIndexed()) return false; - return VectorList.Count == 2 && VectorList.LaneIndex <= 3; - } - - bool isVecListTwoDWordIndexed() const { - if (!isSingleSpacedVectorIndexed()) return false; - return VectorList.Count == 2 && VectorList.LaneIndex <= 1; - } - - bool isVecListThreeDByteIndexed() const { - if (!isSingleSpacedVectorIndexed()) return false; - return VectorList.Count == 3 && VectorList.LaneIndex <= 7; - } - - bool isVecListThreeDHWordIndexed() const { - if (!isSingleSpacedVectorIndexed()) return false; - return VectorList.Count == 3 && VectorList.LaneIndex <= 3; - } - - bool isVecListThreeQWordIndexed() const { - if (!isDoubleSpacedVectorIndexed()) return false; - return VectorList.Count == 3 && VectorList.LaneIndex <= 1; - } - - bool isVecListThreeQHWordIndexed() const { - if (!isDoubleSpacedVectorIndexed()) return false; - return VectorList.Count == 3 && VectorList.LaneIndex <= 3; - } - - bool isVecListThreeDWordIndexed() const { - if (!isSingleSpacedVectorIndexed()) return false; - return VectorList.Count == 3 && VectorList.LaneIndex <= 1; - } - - bool isVecListFourDByteIndexed() const { - if (!isSingleSpacedVectorIndexed()) return false; - return VectorList.Count == 4 && VectorList.LaneIndex <= 7; - } - - bool isVecListFourDHWordIndexed() const { - if (!isSingleSpacedVectorIndexed()) return false; - return VectorList.Count == 4 && VectorList.LaneIndex <= 3; - } - - bool isVecListFourQWordIndexed() const { - if (!isDoubleSpacedVectorIndexed()) return false; - return VectorList.Count == 4 && VectorList.LaneIndex <= 1; - } - - bool isVecListFourQHWordIndexed() const { - if (!isDoubleSpacedVectorIndexed()) return false; - return VectorList.Count == 4 && VectorList.LaneIndex <= 3; - } - - bool isVecListFourDWordIndexed() const { - if (!isSingleSpacedVectorIndexed()) return false; - return VectorList.Count == 4 && VectorList.LaneIndex <= 1; - } - - bool isVectorIndex8() const { - if (Kind != k_VectorIndex) return false; - return VectorIndex.Val < 8; - } - - bool isVectorIndex16() const { - if (Kind != k_VectorIndex) return false; - return VectorIndex.Val < 4; - } - - bool isVectorIndex32() const { - if (Kind != k_VectorIndex) return false; - return VectorIndex.Val < 2; - } - bool isVectorIndex64() const { - if (Kind != k_VectorIndex) return false; - return VectorIndex.Val < 1; - } - - bool isNEONi8splat() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - // Must be a constant. - if (!CE) return false; - int64_t Value = CE->getValue(); - // i8 value splatted across 8 bytes. The immediate is just the 8 byte - // value. - return Value >= 0 && Value < 256; - } - - bool isNEONi16splat() const { - if (isNEONByteReplicate(2)) - return false; // Leave that for bytes replication and forbid by default. - if (!isImm()) - return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - // Must be a constant. - if (!CE) return false; - unsigned Value = CE->getValue(); - return ARM_AM::isNEONi16splat(Value); - } - - bool isNEONi16splatNot() const { - if (!isImm()) - return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - // Must be a constant. - if (!CE) return false; - unsigned Value = CE->getValue(); - return ARM_AM::isNEONi16splat(~Value & 0xffff); - } - - bool isNEONi32splat() const { - if (isNEONByteReplicate(4)) - return false; // Leave that for bytes replication and forbid by default. - if (!isImm()) - return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - // Must be a constant. - if (!CE) return false; - unsigned Value = CE->getValue(); - return ARM_AM::isNEONi32splat(Value); - } - - bool isNEONi32splatNot() const { - if (!isImm()) - return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - // Must be a constant. - if (!CE) return false; - unsigned Value = CE->getValue(); - return ARM_AM::isNEONi32splat(~Value); - } - - static bool isValidNEONi32vmovImm(int64_t Value) { - // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X, - // for VMOV/VMVN only, 00Xf or 0Xff are also accepted. - return ((Value & 0xffffffffffffff00) == 0) || - ((Value & 0xffffffffffff00ff) == 0) || - ((Value & 0xffffffffff00ffff) == 0) || - ((Value & 0xffffffff00ffffff) == 0) || - ((Value & 0xffffffffffff00ff) == 0xff) || - ((Value & 0xffffffffff00ffff) == 0xffff); - } - - bool isNEONReplicate(unsigned Width, unsigned NumElems, bool Inv) const { - assert((Width == 8 || Width == 16 || Width == 32) && - "Invalid element width"); - assert(NumElems * Width <= 64 && "Invalid result width"); - - if (!isImm()) - return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - // Must be a constant. - if (!CE) - return false; - int64_t Value = CE->getValue(); - if (!Value) - return false; // Don't bother with zero. - if (Inv) - Value = ~Value; - - uint64_t Mask = (1ull << Width) - 1; - uint64_t Elem = Value & Mask; - if (Width == 16 && (Elem & 0x00ff) != 0 && (Elem & 0xff00) != 0) - return false; - if (Width == 32 && !isValidNEONi32vmovImm(Elem)) - return false; - - for (unsigned i = 1; i < NumElems; ++i) { - Value >>= Width; - if ((Value & Mask) != Elem) - return false; - } - return true; - } - - bool isNEONByteReplicate(unsigned NumBytes) const { - return isNEONReplicate(8, NumBytes, false); - } - - static void checkNeonReplicateArgs(unsigned FromW, unsigned ToW) { - assert((FromW == 8 || FromW == 16 || FromW == 32) && - "Invalid source width"); - assert((ToW == 16 || ToW == 32 || ToW == 64) && - "Invalid destination width"); - assert(FromW < ToW && "ToW is not less than FromW"); - } - - template<unsigned FromW, unsigned ToW> - bool isNEONmovReplicate() const { - checkNeonReplicateArgs(FromW, ToW); - if (ToW == 64 && isNEONi64splat()) - return false; - return isNEONReplicate(FromW, ToW / FromW, false); - } - - template<unsigned FromW, unsigned ToW> - bool isNEONinvReplicate() const { - checkNeonReplicateArgs(FromW, ToW); - return isNEONReplicate(FromW, ToW / FromW, true); - } - - bool isNEONi32vmov() const { - if (isNEONByteReplicate(4)) - return false; // Let it to be classified as byte-replicate case. - if (!isImm()) - return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - // Must be a constant. - if (!CE) - return false; - return isValidNEONi32vmovImm(CE->getValue()); - } - - bool isNEONi32vmovNeg() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - // Must be a constant. - if (!CE) return false; - return isValidNEONi32vmovImm(~CE->getValue()); - } - - bool isNEONi64splat() const { - if (!isImm()) return false; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - // Must be a constant. - if (!CE) return false; - uint64_t Value = CE->getValue(); - // i64 value with each byte being either 0 or 0xff. - for (unsigned i = 0; i < 8; ++i, Value >>= 8) - if ((Value & 0xff) != 0 && (Value & 0xff) != 0xff) return false; - return true; - } - - template<int64_t Angle, int64_t Remainder> - bool isComplexRotation() const { - if (!isImm()) return false; - - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (!CE) return false; - uint64_t Value = CE->getValue(); - - return (Value % Angle == Remainder && Value <= 270); - } - - void addExpr(MCInst &Inst, const MCExpr *Expr) const { - // Add as immediates when possible. Null MCExpr = 0. - if (!Expr) - Inst.addOperand(MCOperand::createImm(0)); - else if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr)) - Inst.addOperand(MCOperand::createImm(CE->getValue())); - else - Inst.addOperand(MCOperand::createExpr(Expr)); - } - - void addARMBranchTargetOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - addExpr(Inst, getImm()); - } - - void addThumbBranchTargetOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - addExpr(Inst, getImm()); - } - - void addCondCodeOperands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createImm(unsigned(getCondCode()))); - unsigned RegNum = getCondCode() == ARMCC::AL ? 0: ARM::CPSR; - Inst.addOperand(MCOperand::createReg(RegNum)); - } - - void addCoprocNumOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createImm(getCoproc())); - } - - void addCoprocRegOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createImm(getCoproc())); - } - - void addCoprocOptionOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createImm(CoprocOption.Val)); - } - - void addITMaskOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createImm(ITMask.Mask)); - } - - void addITCondCodeOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createImm(unsigned(getCondCode()))); - } - - void addCCOutOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createReg(getReg())); - } - - void addRegOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createReg(getReg())); - } - - void addRegShiftedRegOperands(MCInst &Inst, unsigned N) const { - assert(N == 3 && "Invalid number of operands!"); - assert(isRegShiftedReg() && - "addRegShiftedRegOperands() on non-RegShiftedReg!"); - Inst.addOperand(MCOperand::createReg(RegShiftedReg.SrcReg)); - Inst.addOperand(MCOperand::createReg(RegShiftedReg.ShiftReg)); - Inst.addOperand(MCOperand::createImm( - ARM_AM::getSORegOpc(RegShiftedReg.ShiftTy, RegShiftedReg.ShiftImm))); - } - - void addRegShiftedImmOperands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - assert(isRegShiftedImm() && - "addRegShiftedImmOperands() on non-RegShiftedImm!"); - Inst.addOperand(MCOperand::createReg(RegShiftedImm.SrcReg)); - // Shift of #32 is encoded as 0 where permitted - unsigned Imm = (RegShiftedImm.ShiftImm == 32 ? 0 : RegShiftedImm.ShiftImm); - Inst.addOperand(MCOperand::createImm( - ARM_AM::getSORegOpc(RegShiftedImm.ShiftTy, Imm))); - } - - void addShifterImmOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createImm((ShifterImm.isASR << 5) | - ShifterImm.Imm)); - } - - void addRegListOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - const SmallVectorImpl<unsigned> &RegList = getRegList(); - for (SmallVectorImpl<unsigned>::const_iterator - I = RegList.begin(), E = RegList.end(); I != E; ++I) - Inst.addOperand(MCOperand::createReg(*I)); - } - - void addDPRRegListOperands(MCInst &Inst, unsigned N) const { - addRegListOperands(Inst, N); - } - - void addSPRRegListOperands(MCInst &Inst, unsigned N) const { - addRegListOperands(Inst, N); - } - - void addRotImmOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // Encoded as val>>3. The printer handles display as 8, 16, 24. - Inst.addOperand(MCOperand::createImm(RotImm.Imm >> 3)); - } - - void addModImmOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - - // Support for fixups (MCFixup) - if (isImm()) - return addImmOperands(Inst, N); - - Inst.addOperand(MCOperand::createImm(ModImm.Bits | (ModImm.Rot << 7))); - } - - void addModImmNotOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - uint32_t Enc = ARM_AM::getSOImmVal(~CE->getValue()); - Inst.addOperand(MCOperand::createImm(Enc)); - } - - void addModImmNegOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - uint32_t Enc = ARM_AM::getSOImmVal(-CE->getValue()); - Inst.addOperand(MCOperand::createImm(Enc)); - } - - void addThumbModImmNeg8_255Operands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - uint32_t Val = -CE->getValue(); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addThumbModImmNeg1_7Operands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - uint32_t Val = -CE->getValue(); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addBitfieldOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // Munge the lsb/width into a bitfield mask. - unsigned lsb = Bitfield.LSB; - unsigned width = Bitfield.Width; - // Make a 32-bit mask w/ the referenced bits clear and all other bits set. - uint32_t Mask = ~(((uint32_t)0xffffffff >> lsb) << (32 - width) >> - (32 - (lsb + width))); - Inst.addOperand(MCOperand::createImm(Mask)); - } - - void addImmOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - addExpr(Inst, getImm()); - } - - void addFBits16Operands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - Inst.addOperand(MCOperand::createImm(16 - CE->getValue())); - } - - void addFBits32Operands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - Inst.addOperand(MCOperand::createImm(32 - CE->getValue())); - } - - void addFPImmOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - int Val = ARM_AM::getFP32Imm(APInt(32, CE->getValue())); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addImm8s4Operands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // FIXME: We really want to scale the value here, but the LDRD/STRD - // instruction don't encode operands that way yet. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - Inst.addOperand(MCOperand::createImm(CE->getValue())); - } - - void addImm0_1020s4Operands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // The immediate is scaled by four in the encoding and is stored - // in the MCInst as such. Lop off the low two bits here. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - Inst.addOperand(MCOperand::createImm(CE->getValue() / 4)); - } - - void addImm0_508s4NegOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // The immediate is scaled by four in the encoding and is stored - // in the MCInst as such. Lop off the low two bits here. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - Inst.addOperand(MCOperand::createImm(-(CE->getValue() / 4))); - } - - void addImm0_508s4Operands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // The immediate is scaled by four in the encoding and is stored - // in the MCInst as such. Lop off the low two bits here. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - Inst.addOperand(MCOperand::createImm(CE->getValue() / 4)); - } - - void addImm1_16Operands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // The constant encodes as the immediate-1, and we store in the instruction - // the bits as encoded, so subtract off one here. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - Inst.addOperand(MCOperand::createImm(CE->getValue() - 1)); - } - - void addImm1_32Operands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // The constant encodes as the immediate-1, and we store in the instruction - // the bits as encoded, so subtract off one here. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - Inst.addOperand(MCOperand::createImm(CE->getValue() - 1)); - } - - void addImmThumbSROperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // The constant encodes as the immediate, except for 32, which encodes as - // zero. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - unsigned Imm = CE->getValue(); - Inst.addOperand(MCOperand::createImm((Imm == 32 ? 0 : Imm))); - } - - void addPKHASRImmOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // An ASR value of 32 encodes as 0, so that's how we want to add it to - // the instruction as well. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - int Val = CE->getValue(); - Inst.addOperand(MCOperand::createImm(Val == 32 ? 0 : Val)); - } - - void addT2SOImmNotOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // The operand is actually a t2_so_imm, but we have its bitwise - // negation in the assembly source, so twiddle it here. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - Inst.addOperand(MCOperand::createImm(~(uint32_t)CE->getValue())); - } - - void addT2SOImmNegOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // The operand is actually a t2_so_imm, but we have its - // negation in the assembly source, so twiddle it here. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - Inst.addOperand(MCOperand::createImm(-(uint32_t)CE->getValue())); - } - - void addImm0_4095NegOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // The operand is actually an imm0_4095, but we have its - // negation in the assembly source, so twiddle it here. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - Inst.addOperand(MCOperand::createImm(-(uint32_t)CE->getValue())); - } - - void addUnsignedOffset_b8s2Operands(MCInst &Inst, unsigned N) const { - if(const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm())) { - Inst.addOperand(MCOperand::createImm(CE->getValue() >> 2)); - return; - } - - const MCSymbolRefExpr *SR = dyn_cast<MCSymbolRefExpr>(Imm.Val); - assert(SR && "Unknown value type!"); - Inst.addOperand(MCOperand::createExpr(SR)); - } - - void addThumbMemPCOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - if (isImm()) { - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - if (CE) { - Inst.addOperand(MCOperand::createImm(CE->getValue())); - return; - } - - const MCSymbolRefExpr *SR = dyn_cast<MCSymbolRefExpr>(Imm.Val); - - assert(SR && "Unknown value type!"); - Inst.addOperand(MCOperand::createExpr(SR)); - return; - } - - assert(isMem() && "Unknown value type!"); - assert(isa<MCConstantExpr>(Memory.OffsetImm) && "Unknown value type!"); - Inst.addOperand(MCOperand::createImm(Memory.OffsetImm->getValue())); - } - - void addMemBarrierOptOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createImm(unsigned(getMemBarrierOpt()))); - } - - void addInstSyncBarrierOptOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createImm(unsigned(getInstSyncBarrierOpt()))); - } - - void addTraceSyncBarrierOptOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createImm(unsigned(getTraceSyncBarrierOpt()))); - } - - void addMemNoOffsetOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - } - - void addMemPCRelImm12Operands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - int32_t Imm = Memory.OffsetImm->getValue(); - Inst.addOperand(MCOperand::createImm(Imm)); - } - - void addAdrLabelOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - assert(isImm() && "Not an immediate!"); - - // If we have an immediate that's not a constant, treat it as a label - // reference needing a fixup. - if (!isa<MCConstantExpr>(getImm())) { - Inst.addOperand(MCOperand::createExpr(getImm())); - return; - } - - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - int Val = CE->getValue(); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addAlignedMemoryOperands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createImm(Memory.Alignment)); - } - - void addDupAlignedMemoryNoneOperands(MCInst &Inst, unsigned N) const { - addAlignedMemoryOperands(Inst, N); - } - - void addAlignedMemoryNoneOperands(MCInst &Inst, unsigned N) const { - addAlignedMemoryOperands(Inst, N); - } - - void addAlignedMemory16Operands(MCInst &Inst, unsigned N) const { - addAlignedMemoryOperands(Inst, N); - } - - void addDupAlignedMemory16Operands(MCInst &Inst, unsigned N) const { - addAlignedMemoryOperands(Inst, N); - } - - void addAlignedMemory32Operands(MCInst &Inst, unsigned N) const { - addAlignedMemoryOperands(Inst, N); - } - - void addDupAlignedMemory32Operands(MCInst &Inst, unsigned N) const { - addAlignedMemoryOperands(Inst, N); - } - - void addAlignedMemory64Operands(MCInst &Inst, unsigned N) const { - addAlignedMemoryOperands(Inst, N); - } - - void addDupAlignedMemory64Operands(MCInst &Inst, unsigned N) const { - addAlignedMemoryOperands(Inst, N); - } - - void addAlignedMemory64or128Operands(MCInst &Inst, unsigned N) const { - addAlignedMemoryOperands(Inst, N); - } - - void addDupAlignedMemory64or128Operands(MCInst &Inst, unsigned N) const { - addAlignedMemoryOperands(Inst, N); - } - - void addAlignedMemory64or128or256Operands(MCInst &Inst, unsigned N) const { - addAlignedMemoryOperands(Inst, N); - } - - void addAddrMode2Operands(MCInst &Inst, unsigned N) const { - assert(N == 3 && "Invalid number of operands!"); - int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0; - if (!Memory.OffsetRegNum) { - ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add; - // Special case for #-0 - if (Val == std::numeric_limits<int32_t>::min()) Val = 0; - if (Val < 0) Val = -Val; - Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift); - } else { - // For register offset, we encode the shift type and negation flag - // here. - Val = ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add, - Memory.ShiftImm, Memory.ShiftType); - } - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum)); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addAM2OffsetImmOperands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - assert(CE && "non-constant AM2OffsetImm operand!"); - int32_t Val = CE->getValue(); - ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add; - // Special case for #-0 - if (Val == std::numeric_limits<int32_t>::min()) Val = 0; - if (Val < 0) Val = -Val; - Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift); - Inst.addOperand(MCOperand::createReg(0)); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addAddrMode3Operands(MCInst &Inst, unsigned N) const { - assert(N == 3 && "Invalid number of operands!"); - // If we have an immediate that's not a constant, treat it as a label - // reference needing a fixup. If it is a constant, it's something else - // and we reject it. - if (isImm()) { - Inst.addOperand(MCOperand::createExpr(getImm())); - Inst.addOperand(MCOperand::createReg(0)); - Inst.addOperand(MCOperand::createImm(0)); - return; - } - - int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0; - if (!Memory.OffsetRegNum) { - ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add; - // Special case for #-0 - if (Val == std::numeric_limits<int32_t>::min()) Val = 0; - if (Val < 0) Val = -Val; - Val = ARM_AM::getAM3Opc(AddSub, Val); - } else { - // For register offset, we encode the shift type and negation flag - // here. - Val = ARM_AM::getAM3Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add, 0); - } - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum)); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addAM3OffsetOperands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - if (Kind == k_PostIndexRegister) { - int32_t Val = - ARM_AM::getAM3Opc(PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub, 0); - Inst.addOperand(MCOperand::createReg(PostIdxReg.RegNum)); - Inst.addOperand(MCOperand::createImm(Val)); - return; - } - - // Constant offset. - const MCConstantExpr *CE = static_cast<const MCConstantExpr*>(getImm()); - int32_t Val = CE->getValue(); - ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add; - // Special case for #-0 - if (Val == std::numeric_limits<int32_t>::min()) Val = 0; - if (Val < 0) Val = -Val; - Val = ARM_AM::getAM3Opc(AddSub, Val); - Inst.addOperand(MCOperand::createReg(0)); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addAddrMode5Operands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - // If we have an immediate that's not a constant, treat it as a label - // reference needing a fixup. If it is a constant, it's something else - // and we reject it. - if (isImm()) { - Inst.addOperand(MCOperand::createExpr(getImm())); - Inst.addOperand(MCOperand::createImm(0)); - return; - } - - // The lower two bits are always zero and as such are not encoded. - int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0; - ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add; - // Special case for #-0 - if (Val == std::numeric_limits<int32_t>::min()) Val = 0; - if (Val < 0) Val = -Val; - Val = ARM_AM::getAM5Opc(AddSub, Val); - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addAddrMode5FP16Operands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - // If we have an immediate that's not a constant, treat it as a label - // reference needing a fixup. If it is a constant, it's something else - // and we reject it. - if (isImm()) { - Inst.addOperand(MCOperand::createExpr(getImm())); - Inst.addOperand(MCOperand::createImm(0)); - return; - } - - // The lower bit is always zero and as such is not encoded. - int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 2 : 0; - ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add; - // Special case for #-0 - if (Val == std::numeric_limits<int32_t>::min()) Val = 0; - if (Val < 0) Val = -Val; - Val = ARM_AM::getAM5FP16Opc(AddSub, Val); - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addMemImm8s4OffsetOperands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - // If we have an immediate that's not a constant, treat it as a label - // reference needing a fixup. If it is a constant, it's something else - // and we reject it. - if (isImm()) { - Inst.addOperand(MCOperand::createExpr(getImm())); - Inst.addOperand(MCOperand::createImm(0)); - return; - } - - int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0; - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addMemImm0_1020s4OffsetOperands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - // The lower two bits are always zero and as such are not encoded. - int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0; - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addMemImm8OffsetOperands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0; - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addMemPosImm8OffsetOperands(MCInst &Inst, unsigned N) const { - addMemImm8OffsetOperands(Inst, N); - } - - void addMemNegImm8OffsetOperands(MCInst &Inst, unsigned N) const { - addMemImm8OffsetOperands(Inst, N); - } - - void addMemUImm12OffsetOperands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - // If this is an immediate, it's a label reference. - if (isImm()) { - addExpr(Inst, getImm()); - Inst.addOperand(MCOperand::createImm(0)); - return; - } - - // Otherwise, it's a normal memory reg+offset. - int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0; - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addMemImm12OffsetOperands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - // If this is an immediate, it's a label reference. - if (isImm()) { - addExpr(Inst, getImm()); - Inst.addOperand(MCOperand::createImm(0)); - return; - } - - // Otherwise, it's a normal memory reg+offset. - int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0; - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addConstPoolAsmImmOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // This is container for the immediate that we will create the constant - // pool from - addExpr(Inst, getConstantPoolImm()); - return; - } - - void addMemTBBOperands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum)); - } - - void addMemTBHOperands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum)); - } - - void addMemRegOffsetOperands(MCInst &Inst, unsigned N) const { - assert(N == 3 && "Invalid number of operands!"); - unsigned Val = - ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add, - Memory.ShiftImm, Memory.ShiftType); - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum)); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addT2MemRegOffsetOperands(MCInst &Inst, unsigned N) const { - assert(N == 3 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum)); - Inst.addOperand(MCOperand::createImm(Memory.ShiftImm)); - } - - void addMemThumbRROperands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum)); - } - - void addMemThumbRIs4Operands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0; - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addMemThumbRIs2Operands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 2) : 0; - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addMemThumbRIs1Operands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue()) : 0; - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addMemThumbSPIOperands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0; - Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum)); - Inst.addOperand(MCOperand::createImm(Val)); - } - - void addPostIdxImm8Operands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - assert(CE && "non-constant post-idx-imm8 operand!"); - int Imm = CE->getValue(); - bool isAdd = Imm >= 0; - if (Imm == std::numeric_limits<int32_t>::min()) Imm = 0; - Imm = (Imm < 0 ? -Imm : Imm) | (int)isAdd << 8; - Inst.addOperand(MCOperand::createImm(Imm)); - } - - void addPostIdxImm8s4Operands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - assert(CE && "non-constant post-idx-imm8s4 operand!"); - int Imm = CE->getValue(); - bool isAdd = Imm >= 0; - if (Imm == std::numeric_limits<int32_t>::min()) Imm = 0; - // Immediate is scaled by 4. - Imm = ((Imm < 0 ? -Imm : Imm) / 4) | (int)isAdd << 8; - Inst.addOperand(MCOperand::createImm(Imm)); - } - - void addPostIdxRegOperands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createReg(PostIdxReg.RegNum)); - Inst.addOperand(MCOperand::createImm(PostIdxReg.isAdd)); - } - - void addPostIdxRegShiftedOperands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createReg(PostIdxReg.RegNum)); - // The sign, shift type, and shift amount are encoded in a single operand - // using the AM2 encoding helpers. - ARM_AM::AddrOpc opc = PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub; - unsigned Imm = ARM_AM::getAM2Opc(opc, PostIdxReg.ShiftImm, - PostIdxReg.ShiftTy); - Inst.addOperand(MCOperand::createImm(Imm)); - } - - void addMSRMaskOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createImm(unsigned(getMSRMask()))); - } - - void addBankedRegOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createImm(unsigned(getBankedReg()))); - } - - void addProcIFlagsOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createImm(unsigned(getProcIFlags()))); - } - - void addVecListOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createReg(VectorList.RegNum)); - } - - void addVecListIndexedOperands(MCInst &Inst, unsigned N) const { - assert(N == 2 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createReg(VectorList.RegNum)); - Inst.addOperand(MCOperand::createImm(VectorList.LaneIndex)); - } - - void addVectorIndex8Operands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createImm(getVectorIndex())); - } - - void addVectorIndex16Operands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createImm(getVectorIndex())); - } - - void addVectorIndex32Operands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createImm(getVectorIndex())); - } - - void addVectorIndex64Operands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - Inst.addOperand(MCOperand::createImm(getVectorIndex())); - } - - void addNEONi8splatOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // The immediate encodes the type of constant as well as the value. - // Mask in that this is an i8 splat. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - Inst.addOperand(MCOperand::createImm(CE->getValue() | 0xe00)); - } - - void addNEONi16splatOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // The immediate encodes the type of constant as well as the value. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - unsigned Value = CE->getValue(); - Value = ARM_AM::encodeNEONi16splat(Value); - Inst.addOperand(MCOperand::createImm(Value)); - } - - void addNEONi16splatNotOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // The immediate encodes the type of constant as well as the value. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - unsigned Value = CE->getValue(); - Value = ARM_AM::encodeNEONi16splat(~Value & 0xffff); - Inst.addOperand(MCOperand::createImm(Value)); - } - - void addNEONi32splatOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // The immediate encodes the type of constant as well as the value. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - unsigned Value = CE->getValue(); - Value = ARM_AM::encodeNEONi32splat(Value); - Inst.addOperand(MCOperand::createImm(Value)); - } - - void addNEONi32splatNotOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // The immediate encodes the type of constant as well as the value. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - unsigned Value = CE->getValue(); - Value = ARM_AM::encodeNEONi32splat(~Value); - Inst.addOperand(MCOperand::createImm(Value)); - } - - void addNEONi8ReplicateOperands(MCInst &Inst, bool Inv) const { - // The immediate encodes the type of constant as well as the value. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - assert((Inst.getOpcode() == ARM::VMOVv8i8 || - Inst.getOpcode() == ARM::VMOVv16i8) && - "All instructions that wants to replicate non-zero byte " - "always must be replaced with VMOVv8i8 or VMOVv16i8."); - unsigned Value = CE->getValue(); - if (Inv) - Value = ~Value; - unsigned B = Value & 0xff; - B |= 0xe00; // cmode = 0b1110 - Inst.addOperand(MCOperand::createImm(B)); - } - - void addNEONinvi8ReplicateOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - addNEONi8ReplicateOperands(Inst, true); - } - - static unsigned encodeNeonVMOVImmediate(unsigned Value) { - if (Value >= 256 && Value <= 0xffff) - Value = (Value >> 8) | ((Value & 0xff) ? 0xc00 : 0x200); - else if (Value > 0xffff && Value <= 0xffffff) - Value = (Value >> 16) | ((Value & 0xff) ? 0xd00 : 0x400); - else if (Value > 0xffffff) - Value = (Value >> 24) | 0x600; - return Value; - } - - void addNEONi32vmovOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // The immediate encodes the type of constant as well as the value. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - unsigned Value = encodeNeonVMOVImmediate(CE->getValue()); - Inst.addOperand(MCOperand::createImm(Value)); - } - - void addNEONvmovi8ReplicateOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - addNEONi8ReplicateOperands(Inst, false); - } - - void addNEONvmovi16ReplicateOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - assert((Inst.getOpcode() == ARM::VMOVv4i16 || - Inst.getOpcode() == ARM::VMOVv8i16 || - Inst.getOpcode() == ARM::VMVNv4i16 || - Inst.getOpcode() == ARM::VMVNv8i16) && - "All instructions that want to replicate non-zero half-word " - "always must be replaced with V{MOV,MVN}v{4,8}i16."); - uint64_t Value = CE->getValue(); - unsigned Elem = Value & 0xffff; - if (Elem >= 256) - Elem = (Elem >> 8) | 0x200; - Inst.addOperand(MCOperand::createImm(Elem)); - } - - void addNEONi32vmovNegOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // The immediate encodes the type of constant as well as the value. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - unsigned Value = encodeNeonVMOVImmediate(~CE->getValue()); - Inst.addOperand(MCOperand::createImm(Value)); - } - - void addNEONvmovi32ReplicateOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - assert((Inst.getOpcode() == ARM::VMOVv2i32 || - Inst.getOpcode() == ARM::VMOVv4i32 || - Inst.getOpcode() == ARM::VMVNv2i32 || - Inst.getOpcode() == ARM::VMVNv4i32) && - "All instructions that want to replicate non-zero word " - "always must be replaced with V{MOV,MVN}v{2,4}i32."); - uint64_t Value = CE->getValue(); - unsigned Elem = encodeNeonVMOVImmediate(Value & 0xffffffff); - Inst.addOperand(MCOperand::createImm(Elem)); - } - - void addNEONi64splatOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - // The immediate encodes the type of constant as well as the value. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - uint64_t Value = CE->getValue(); - unsigned Imm = 0; - for (unsigned i = 0; i < 8; ++i, Value >>= 8) { - Imm |= (Value & 1) << i; - } - Inst.addOperand(MCOperand::createImm(Imm | 0x1e00)); - } - - void addComplexRotationEvenOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - Inst.addOperand(MCOperand::createImm(CE->getValue() / 90)); - } - - void addComplexRotationOddOperands(MCInst &Inst, unsigned N) const { - assert(N == 1 && "Invalid number of operands!"); - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); - Inst.addOperand(MCOperand::createImm((CE->getValue() - 90) / 180)); - } - - void print(raw_ostream &OS) const override; - - static std::unique_ptr<ARMOperand> CreateITMask(unsigned Mask, SMLoc S) { - auto Op = make_unique<ARMOperand>(k_ITCondMask); - Op->ITMask.Mask = Mask; - Op->StartLoc = S; - Op->EndLoc = S; - return Op; - } - - static std::unique_ptr<ARMOperand> CreateCondCode(ARMCC::CondCodes CC, - SMLoc S) { - auto Op = make_unique<ARMOperand>(k_CondCode); - Op->CC.Val = CC; - Op->StartLoc = S; - Op->EndLoc = S; - return Op; - } - - static std::unique_ptr<ARMOperand> CreateCoprocNum(unsigned CopVal, SMLoc S) { - auto Op = make_unique<ARMOperand>(k_CoprocNum); - Op->Cop.Val = CopVal; - Op->StartLoc = S; - Op->EndLoc = S; - return Op; - } - - static std::unique_ptr<ARMOperand> CreateCoprocReg(unsigned CopVal, SMLoc S) { - auto Op = make_unique<ARMOperand>(k_CoprocReg); - Op->Cop.Val = CopVal; - Op->StartLoc = S; - Op->EndLoc = S; - return Op; - } - - static std::unique_ptr<ARMOperand> CreateCoprocOption(unsigned Val, SMLoc S, - SMLoc E) { - auto Op = make_unique<ARMOperand>(k_CoprocOption); - Op->Cop.Val = Val; - Op->StartLoc = S; - Op->EndLoc = E; - return Op; - } - - static std::unique_ptr<ARMOperand> CreateCCOut(unsigned RegNum, SMLoc S) { - auto Op = make_unique<ARMOperand>(k_CCOut); - Op->Reg.RegNum = RegNum; - Op->StartLoc = S; - Op->EndLoc = S; - return Op; - } - - static std::unique_ptr<ARMOperand> CreateToken(StringRef Str, SMLoc S) { - auto Op = make_unique<ARMOperand>(k_Token); - Op->Tok.Data = Str.data(); - Op->Tok.Length = Str.size(); - Op->StartLoc = S; - Op->EndLoc = S; - return Op; - } - - static std::unique_ptr<ARMOperand> CreateReg(unsigned RegNum, SMLoc S, - SMLoc E) { - auto Op = make_unique<ARMOperand>(k_Register); - Op->Reg.RegNum = RegNum; - Op->StartLoc = S; - Op->EndLoc = E; - return Op; - } - - static std::unique_ptr<ARMOperand> - CreateShiftedRegister(ARM_AM::ShiftOpc ShTy, unsigned SrcReg, - unsigned ShiftReg, unsigned ShiftImm, SMLoc S, - SMLoc E) { - auto Op = make_unique<ARMOperand>(k_ShiftedRegister); - Op->RegShiftedReg.ShiftTy = ShTy; - Op->RegShiftedReg.SrcReg = SrcReg; - Op->RegShiftedReg.ShiftReg = ShiftReg; - Op->RegShiftedReg.ShiftImm = ShiftImm; - Op->StartLoc = S; - Op->EndLoc = E; - return Op; - } - - static std::unique_ptr<ARMOperand> - CreateShiftedImmediate(ARM_AM::ShiftOpc ShTy, unsigned SrcReg, - unsigned ShiftImm, SMLoc S, SMLoc E) { - auto Op = make_unique<ARMOperand>(k_ShiftedImmediate); - Op->RegShiftedImm.ShiftTy = ShTy; - Op->RegShiftedImm.SrcReg = SrcReg; - Op->RegShiftedImm.ShiftImm = ShiftImm; - Op->StartLoc = S; - Op->EndLoc = E; - return Op; - } - - static std::unique_ptr<ARMOperand> CreateShifterImm(bool isASR, unsigned Imm, - SMLoc S, SMLoc E) { - auto Op = make_unique<ARMOperand>(k_ShifterImmediate); - Op->ShifterImm.isASR = isASR; - Op->ShifterImm.Imm = Imm; - Op->StartLoc = S; - Op->EndLoc = E; - return Op; - } - - static std::unique_ptr<ARMOperand> CreateRotImm(unsigned Imm, SMLoc S, - SMLoc E) { - auto Op = make_unique<ARMOperand>(k_RotateImmediate); - Op->RotImm.Imm = Imm; - Op->StartLoc = S; - Op->EndLoc = E; - return Op; - } - - static std::unique_ptr<ARMOperand> CreateModImm(unsigned Bits, unsigned Rot, - SMLoc S, SMLoc E) { - auto Op = make_unique<ARMOperand>(k_ModifiedImmediate); - Op->ModImm.Bits = Bits; - Op->ModImm.Rot = Rot; - Op->StartLoc = S; - Op->EndLoc = E; - return Op; - } - - static std::unique_ptr<ARMOperand> - CreateConstantPoolImm(const MCExpr *Val, SMLoc S, SMLoc E) { - auto Op = make_unique<ARMOperand>(k_ConstantPoolImmediate); - Op->Imm.Val = Val; - Op->StartLoc = S; - Op->EndLoc = E; - return Op; - } - - static std::unique_ptr<ARMOperand> - CreateBitfield(unsigned LSB, unsigned Width, SMLoc S, SMLoc E) { - auto Op = make_unique<ARMOperand>(k_BitfieldDescriptor); - Op->Bitfield.LSB = LSB; - Op->Bitfield.Width = Width; - Op->StartLoc = S; - Op->EndLoc = E; - return Op; - } - - static std::unique_ptr<ARMOperand> - CreateRegList(SmallVectorImpl<std::pair<unsigned, unsigned>> &Regs, - SMLoc StartLoc, SMLoc EndLoc) { - assert(Regs.size() > 0 && "RegList contains no registers?"); - KindTy Kind = k_RegisterList; - - if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Regs.front().second)) - Kind = k_DPRRegisterList; - else if (ARMMCRegisterClasses[ARM::SPRRegClassID]. - contains(Regs.front().second)) - Kind = k_SPRRegisterList; - - // Sort based on the register encoding values. - array_pod_sort(Regs.begin(), Regs.end()); - - auto Op = make_unique<ARMOperand>(Kind); - for (SmallVectorImpl<std::pair<unsigned, unsigned>>::const_iterator - I = Regs.begin(), E = Regs.end(); I != E; ++I) - Op->Registers.push_back(I->second); - Op->StartLoc = StartLoc; - Op->EndLoc = EndLoc; - return Op; - } - - static std::unique_ptr<ARMOperand> CreateVectorList(unsigned RegNum, - unsigned Count, - bool isDoubleSpaced, - SMLoc S, SMLoc E) { - auto Op = make_unique<ARMOperand>(k_VectorList); - Op->VectorList.RegNum = RegNum; - Op->VectorList.Count = Count; - Op->VectorList.isDoubleSpaced = isDoubleSpaced; - Op->StartLoc = S; - Op->EndLoc = E; - return Op; - } - - static std::unique_ptr<ARMOperand> - CreateVectorListAllLanes(unsigned RegNum, unsigned Count, bool isDoubleSpaced, - SMLoc S, SMLoc E) { - auto Op = make_unique<ARMOperand>(k_VectorListAllLanes); - Op->VectorList.RegNum = RegNum; - Op->VectorList.Count = Count; - Op->VectorList.isDoubleSpaced = isDoubleSpaced; - Op->StartLoc = S; - Op->EndLoc = E; - return Op; - } - - static std::unique_ptr<ARMOperand> - CreateVectorListIndexed(unsigned RegNum, unsigned Count, unsigned Index, - bool isDoubleSpaced, SMLoc S, SMLoc E) { - auto Op = make_unique<ARMOperand>(k_VectorListIndexed); - Op->VectorList.RegNum = RegNum; - Op->VectorList.Count = Count; - Op->VectorList.LaneIndex = Index; - Op->VectorList.isDoubleSpaced = isDoubleSpaced; - Op->StartLoc = S; - Op->EndLoc = E; - return Op; - } - - static std::unique_ptr<ARMOperand> - CreateVectorIndex(unsigned Idx, SMLoc S, SMLoc E, MCContext &Ctx) { - auto Op = make_unique<ARMOperand>(k_VectorIndex); - Op->VectorIndex.Val = Idx; - Op->StartLoc = S; - Op->EndLoc = E; - return Op; - } - - static std::unique_ptr<ARMOperand> CreateImm(const MCExpr *Val, SMLoc S, - SMLoc E) { - auto Op = make_unique<ARMOperand>(k_Immediate); - Op->Imm.Val = Val; - Op->StartLoc = S; - Op->EndLoc = E; - return Op; - } - - static std::unique_ptr<ARMOperand> - CreateMem(unsigned BaseRegNum, const MCConstantExpr *OffsetImm, - unsigned OffsetRegNum, ARM_AM::ShiftOpc ShiftType, - unsigned ShiftImm, unsigned Alignment, bool isNegative, SMLoc S, - SMLoc E, SMLoc AlignmentLoc = SMLoc()) { - auto Op = make_unique<ARMOperand>(k_Memory); - Op->Memory.BaseRegNum = BaseRegNum; - Op->Memory.OffsetImm = OffsetImm; - Op->Memory.OffsetRegNum = OffsetRegNum; - Op->Memory.ShiftType = ShiftType; - Op->Memory.ShiftImm = ShiftImm; - Op->Memory.Alignment = Alignment; - Op->Memory.isNegative = isNegative; - Op->StartLoc = S; - Op->EndLoc = E; - Op->AlignmentLoc = AlignmentLoc; - return Op; - } - - static std::unique_ptr<ARMOperand> - CreatePostIdxReg(unsigned RegNum, bool isAdd, ARM_AM::ShiftOpc ShiftTy, - unsigned ShiftImm, SMLoc S, SMLoc E) { - auto Op = make_unique<ARMOperand>(k_PostIndexRegister); - Op->PostIdxReg.RegNum = RegNum; - Op->PostIdxReg.isAdd = isAdd; - Op->PostIdxReg.ShiftTy = ShiftTy; - Op->PostIdxReg.ShiftImm = ShiftImm; - Op->StartLoc = S; - Op->EndLoc = E; - return Op; - } - - static std::unique_ptr<ARMOperand> CreateMemBarrierOpt(ARM_MB::MemBOpt Opt, - SMLoc S) { - auto Op = make_unique<ARMOperand>(k_MemBarrierOpt); - Op->MBOpt.Val = Opt; - Op->StartLoc = S; - Op->EndLoc = S; - return Op; - } - - static std::unique_ptr<ARMOperand> - CreateInstSyncBarrierOpt(ARM_ISB::InstSyncBOpt Opt, SMLoc S) { - auto Op = make_unique<ARMOperand>(k_InstSyncBarrierOpt); - Op->ISBOpt.Val = Opt; - Op->StartLoc = S; - Op->EndLoc = S; - return Op; - } - - static std::unique_ptr<ARMOperand> - CreateTraceSyncBarrierOpt(ARM_TSB::TraceSyncBOpt Opt, SMLoc S) { - auto Op = make_unique<ARMOperand>(k_TraceSyncBarrierOpt); - Op->TSBOpt.Val = Opt; - Op->StartLoc = S; - Op->EndLoc = S; - return Op; - } - - static std::unique_ptr<ARMOperand> CreateProcIFlags(ARM_PROC::IFlags IFlags, - SMLoc S) { - auto Op = make_unique<ARMOperand>(k_ProcIFlags); - Op->IFlags.Val = IFlags; - Op->StartLoc = S; - Op->EndLoc = S; - return Op; - } - - static std::unique_ptr<ARMOperand> CreateMSRMask(unsigned MMask, SMLoc S) { - auto Op = make_unique<ARMOperand>(k_MSRMask); - Op->MMask.Val = MMask; - Op->StartLoc = S; - Op->EndLoc = S; - return Op; - } - - static std::unique_ptr<ARMOperand> CreateBankedReg(unsigned Reg, SMLoc S) { - auto Op = make_unique<ARMOperand>(k_BankedReg); - Op->BankedReg.Val = Reg; - Op->StartLoc = S; - Op->EndLoc = S; - return Op; - } -}; - -} // end anonymous namespace. - -void ARMOperand::print(raw_ostream &OS) const { - auto RegName = [](unsigned Reg) { - if (Reg) - return ARMInstPrinter::getRegisterName(Reg); - else - return "noreg"; - }; - - switch (Kind) { - case k_CondCode: - OS << "<ARMCC::" << ARMCondCodeToString(getCondCode()) << ">"; - break; - case k_CCOut: - OS << "<ccout " << RegName(getReg()) << ">"; - break; - case k_ITCondMask: { - static const char *const MaskStr[] = { - "(invalid)", "(teee)", "(tee)", "(teet)", - "(te)", "(tete)", "(tet)", "(tett)", - "(t)", "(ttee)", "(tte)", "(ttet)", - "(tt)", "(ttte)", "(ttt)", "(tttt)" - }; - assert((ITMask.Mask & 0xf) == ITMask.Mask); - OS << "<it-mask " << MaskStr[ITMask.Mask] << ">"; - break; - } - case k_CoprocNum: - OS << "<coprocessor number: " << getCoproc() << ">"; - break; - case k_CoprocReg: - OS << "<coprocessor register: " << getCoproc() << ">"; - break; - case k_CoprocOption: - OS << "<coprocessor option: " << CoprocOption.Val << ">"; - break; - case k_MSRMask: - OS << "<mask: " << getMSRMask() << ">"; - break; - case k_BankedReg: - OS << "<banked reg: " << getBankedReg() << ">"; - break; - case k_Immediate: - OS << *getImm(); - break; - case k_MemBarrierOpt: - OS << "<ARM_MB::" << MemBOptToString(getMemBarrierOpt(), false) << ">"; - break; - case k_InstSyncBarrierOpt: - OS << "<ARM_ISB::" << InstSyncBOptToString(getInstSyncBarrierOpt()) << ">"; - break; - case k_TraceSyncBarrierOpt: - OS << "<ARM_TSB::" << TraceSyncBOptToString(getTraceSyncBarrierOpt()) << ">"; - break; - case k_Memory: - OS << "<memory"; - if (Memory.BaseRegNum) - OS << " base:" << RegName(Memory.BaseRegNum); - if (Memory.OffsetImm) - OS << " offset-imm:" << *Memory.OffsetImm; - if (Memory.OffsetRegNum) - OS << " offset-reg:" << (Memory.isNegative ? "-" : "") - << RegName(Memory.OffsetRegNum); - if (Memory.ShiftType != ARM_AM::no_shift) { - OS << " shift-type:" << ARM_AM::getShiftOpcStr(Memory.ShiftType); - OS << " shift-imm:" << Memory.ShiftImm; - } - if (Memory.Alignment) - OS << " alignment:" << Memory.Alignment; - OS << ">"; - break; - case k_PostIndexRegister: - OS << "post-idx register " << (PostIdxReg.isAdd ? "" : "-") - << RegName(PostIdxReg.RegNum); - if (PostIdxReg.ShiftTy != ARM_AM::no_shift) - OS << ARM_AM::getShiftOpcStr(PostIdxReg.ShiftTy) << " " - << PostIdxReg.ShiftImm; - OS << ">"; - break; - case k_ProcIFlags: { - OS << "<ARM_PROC::"; - unsigned IFlags = getProcIFlags(); - for (int i=2; i >= 0; --i) - if (IFlags & (1 << i)) - OS << ARM_PROC::IFlagsToString(1 << i); - OS << ">"; - break; - } - case k_Register: - OS << "<register " << RegName(getReg()) << ">"; - break; - case k_ShifterImmediate: - OS << "<shift " << (ShifterImm.isASR ? "asr" : "lsl") - << " #" << ShifterImm.Imm << ">"; - break; - case k_ShiftedRegister: - OS << "<so_reg_reg " << RegName(RegShiftedReg.SrcReg) << " " - << ARM_AM::getShiftOpcStr(RegShiftedReg.ShiftTy) << " " - << RegName(RegShiftedReg.ShiftReg) << ">"; - break; - case k_ShiftedImmediate: - OS << "<so_reg_imm " << RegName(RegShiftedImm.SrcReg) << " " - << ARM_AM::getShiftOpcStr(RegShiftedImm.ShiftTy) << " #" - << RegShiftedImm.ShiftImm << ">"; - break; - case k_RotateImmediate: - OS << "<ror " << " #" << (RotImm.Imm * 8) << ">"; - break; - case k_ModifiedImmediate: - OS << "<mod_imm #" << ModImm.Bits << ", #" - << ModImm.Rot << ")>"; - break; - case k_ConstantPoolImmediate: - OS << "<constant_pool_imm #" << *getConstantPoolImm(); - break; - case k_BitfieldDescriptor: - OS << "<bitfield " << "lsb: " << Bitfield.LSB - << ", width: " << Bitfield.Width << ">"; - break; - case k_RegisterList: - case k_DPRRegisterList: - case k_SPRRegisterList: { - OS << "<register_list "; - - const SmallVectorImpl<unsigned> &RegList = getRegList(); - for (SmallVectorImpl<unsigned>::const_iterator - I = RegList.begin(), E = RegList.end(); I != E; ) { - OS << RegName(*I); - if (++I < E) OS << ", "; - } - - OS << ">"; - break; - } - case k_VectorList: - OS << "<vector_list " << VectorList.Count << " * " - << RegName(VectorList.RegNum) << ">"; - break; - case k_VectorListAllLanes: - OS << "<vector_list(all lanes) " << VectorList.Count << " * " - << RegName(VectorList.RegNum) << ">"; - break; - case k_VectorListIndexed: - OS << "<vector_list(lane " << VectorList.LaneIndex << ") " - << VectorList.Count << " * " << RegName(VectorList.RegNum) << ">"; - break; - case k_Token: - OS << "'" << getToken() << "'"; - break; - case k_VectorIndex: - OS << "<vectorindex " << getVectorIndex() << ">"; - break; - } -} - -/// @name Auto-generated Match Functions -/// { - -static unsigned MatchRegisterName(StringRef Name); - -/// } - -bool ARMAsmParser::ParseRegister(unsigned &RegNo, - SMLoc &StartLoc, SMLoc &EndLoc) { - const AsmToken &Tok = getParser().getTok(); - StartLoc = Tok.getLoc(); - EndLoc = Tok.getEndLoc(); - RegNo = tryParseRegister(); - - return (RegNo == (unsigned)-1); -} - -/// Try to parse a register name. The token must be an Identifier when called, -/// and if it is a register name the token is eaten and the register number is -/// returned. Otherwise return -1. -int ARMAsmParser::tryParseRegister() { - MCAsmParser &Parser = getParser(); - const AsmToken &Tok = Parser.getTok(); - if (Tok.isNot(AsmToken::Identifier)) return -1; - - std::string lowerCase = Tok.getString().lower(); - unsigned RegNum = MatchRegisterName(lowerCase); - if (!RegNum) { - RegNum = StringSwitch<unsigned>(lowerCase) - .Case("r13", ARM::SP) - .Case("r14", ARM::LR) - .Case("r15", ARM::PC) - .Case("ip", ARM::R12) - // Additional register name aliases for 'gas' compatibility. - .Case("a1", ARM::R0) - .Case("a2", ARM::R1) - .Case("a3", ARM::R2) - .Case("a4", ARM::R3) - .Case("v1", ARM::R4) - .Case("v2", ARM::R5) - .Case("v3", ARM::R6) - .Case("v4", ARM::R7) - .Case("v5", ARM::R8) - .Case("v6", ARM::R9) - .Case("v7", ARM::R10) - .Case("v8", ARM::R11) - .Case("sb", ARM::R9) - .Case("sl", ARM::R10) - .Case("fp", ARM::R11) - .Default(0); - } - if (!RegNum) { - // Check for aliases registered via .req. Canonicalize to lower case. - // That's more consistent since register names are case insensitive, and - // it's how the original entry was passed in from MC/MCParser/AsmParser. - StringMap<unsigned>::const_iterator Entry = RegisterReqs.find(lowerCase); - // If no match, return failure. - if (Entry == RegisterReqs.end()) - return -1; - Parser.Lex(); // Eat identifier token. - return Entry->getValue(); - } - - // Some FPUs only have 16 D registers, so D16-D31 are invalid - if (hasD16() && RegNum >= ARM::D16 && RegNum <= ARM::D31) - return -1; - - Parser.Lex(); // Eat identifier token. - - return RegNum; -} - -// Try to parse a shifter (e.g., "lsl <amt>"). On success, return 0. -// If a recoverable error occurs, return 1. If an irrecoverable error -// occurs, return -1. An irrecoverable error is one where tokens have been -// consumed in the process of trying to parse the shifter (i.e., when it is -// indeed a shifter operand, but malformed). -int ARMAsmParser::tryParseShiftRegister(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - SMLoc S = Parser.getTok().getLoc(); - const AsmToken &Tok = Parser.getTok(); - if (Tok.isNot(AsmToken::Identifier)) - return -1; - - std::string lowerCase = Tok.getString().lower(); - ARM_AM::ShiftOpc ShiftTy = StringSwitch<ARM_AM::ShiftOpc>(lowerCase) - .Case("asl", ARM_AM::lsl) - .Case("lsl", ARM_AM::lsl) - .Case("lsr", ARM_AM::lsr) - .Case("asr", ARM_AM::asr) - .Case("ror", ARM_AM::ror) - .Case("rrx", ARM_AM::rrx) - .Default(ARM_AM::no_shift); - - if (ShiftTy == ARM_AM::no_shift) - return 1; - - Parser.Lex(); // Eat the operator. - - // The source register for the shift has already been added to the - // operand list, so we need to pop it off and combine it into the shifted - // register operand instead. - std::unique_ptr<ARMOperand> PrevOp( - (ARMOperand *)Operands.pop_back_val().release()); - if (!PrevOp->isReg()) - return Error(PrevOp->getStartLoc(), "shift must be of a register"); - int SrcReg = PrevOp->getReg(); - - SMLoc EndLoc; - int64_t Imm = 0; - int ShiftReg = 0; - if (ShiftTy == ARM_AM::rrx) { - // RRX Doesn't have an explicit shift amount. The encoder expects - // the shift register to be the same as the source register. Seems odd, - // but OK. - ShiftReg = SrcReg; - } else { - // Figure out if this is shifted by a constant or a register (for non-RRX). - if (Parser.getTok().is(AsmToken::Hash) || - Parser.getTok().is(AsmToken::Dollar)) { - Parser.Lex(); // Eat hash. - SMLoc ImmLoc = Parser.getTok().getLoc(); - const MCExpr *ShiftExpr = nullptr; - if (getParser().parseExpression(ShiftExpr, EndLoc)) { - Error(ImmLoc, "invalid immediate shift value"); - return -1; - } - // The expression must be evaluatable as an immediate. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftExpr); - if (!CE) { - Error(ImmLoc, "invalid immediate shift value"); - return -1; - } - // Range check the immediate. - // lsl, ror: 0 <= imm <= 31 - // lsr, asr: 0 <= imm <= 32 - Imm = CE->getValue(); - if (Imm < 0 || - ((ShiftTy == ARM_AM::lsl || ShiftTy == ARM_AM::ror) && Imm > 31) || - ((ShiftTy == ARM_AM::lsr || ShiftTy == ARM_AM::asr) && Imm > 32)) { - Error(ImmLoc, "immediate shift value out of range"); - return -1; - } - // shift by zero is a nop. Always send it through as lsl. - // ('as' compatibility) - if (Imm == 0) - ShiftTy = ARM_AM::lsl; - } else if (Parser.getTok().is(AsmToken::Identifier)) { - SMLoc L = Parser.getTok().getLoc(); - EndLoc = Parser.getTok().getEndLoc(); - ShiftReg = tryParseRegister(); - if (ShiftReg == -1) { - Error(L, "expected immediate or register in shift operand"); - return -1; - } - } else { - Error(Parser.getTok().getLoc(), - "expected immediate or register in shift operand"); - return -1; - } - } - - if (ShiftReg && ShiftTy != ARM_AM::rrx) - Operands.push_back(ARMOperand::CreateShiftedRegister(ShiftTy, SrcReg, - ShiftReg, Imm, - S, EndLoc)); - else - Operands.push_back(ARMOperand::CreateShiftedImmediate(ShiftTy, SrcReg, Imm, - S, EndLoc)); - - return 0; -} - -/// Try to parse a register name. The token must be an Identifier when called. -/// If it's a register, an AsmOperand is created. Another AsmOperand is created -/// if there is a "writeback". 'true' if it's not a register. -/// -/// TODO this is likely to change to allow different register types and or to -/// parse for a specific register type. -bool ARMAsmParser::tryParseRegisterWithWriteBack(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - SMLoc RegStartLoc = Parser.getTok().getLoc(); - SMLoc RegEndLoc = Parser.getTok().getEndLoc(); - int RegNo = tryParseRegister(); - if (RegNo == -1) - return true; - - Operands.push_back(ARMOperand::CreateReg(RegNo, RegStartLoc, RegEndLoc)); - - const AsmToken &ExclaimTok = Parser.getTok(); - if (ExclaimTok.is(AsmToken::Exclaim)) { - Operands.push_back(ARMOperand::CreateToken(ExclaimTok.getString(), - ExclaimTok.getLoc())); - Parser.Lex(); // Eat exclaim token - return false; - } - - // Also check for an index operand. This is only legal for vector registers, - // but that'll get caught OK in operand matching, so we don't need to - // explicitly filter everything else out here. - if (Parser.getTok().is(AsmToken::LBrac)) { - SMLoc SIdx = Parser.getTok().getLoc(); - Parser.Lex(); // Eat left bracket token. - - const MCExpr *ImmVal; - if (getParser().parseExpression(ImmVal)) - return true; - const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal); - if (!MCE) - return TokError("immediate value expected for vector index"); - - if (Parser.getTok().isNot(AsmToken::RBrac)) - return Error(Parser.getTok().getLoc(), "']' expected"); - - SMLoc E = Parser.getTok().getEndLoc(); - Parser.Lex(); // Eat right bracket token. - - Operands.push_back(ARMOperand::CreateVectorIndex(MCE->getValue(), - SIdx, E, - getContext())); - } - - return false; -} - -/// MatchCoprocessorOperandName - Try to parse an coprocessor related -/// instruction with a symbolic operand name. -/// We accept "crN" syntax for GAS compatibility. -/// <operand-name> ::= <prefix><number> -/// If CoprocOp is 'c', then: -/// <prefix> ::= c | cr -/// If CoprocOp is 'p', then : -/// <prefix> ::= p -/// <number> ::= integer in range [0, 15] -static int MatchCoprocessorOperandName(StringRef Name, char CoprocOp) { - // Use the same layout as the tablegen'erated register name matcher. Ugly, - // but efficient. - if (Name.size() < 2 || Name[0] != CoprocOp) - return -1; - Name = (Name[1] == 'r') ? Name.drop_front(2) : Name.drop_front(); - - switch (Name.size()) { - default: return -1; - case 1: - switch (Name[0]) { - default: return -1; - case '0': return 0; - case '1': return 1; - case '2': return 2; - case '3': return 3; - case '4': return 4; - case '5': return 5; - case '6': return 6; - case '7': return 7; - case '8': return 8; - case '9': return 9; - } - case 2: - if (Name[0] != '1') - return -1; - switch (Name[1]) { - default: return -1; - // CP10 and CP11 are VFP/NEON and so vector instructions should be used. - // However, old cores (v5/v6) did use them in that way. - case '0': return 10; - case '1': return 11; - case '2': return 12; - case '3': return 13; - case '4': return 14; - case '5': return 15; - } - } -} - -/// parseITCondCode - Try to parse a condition code for an IT instruction. -OperandMatchResultTy -ARMAsmParser::parseITCondCode(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - SMLoc S = Parser.getTok().getLoc(); - const AsmToken &Tok = Parser.getTok(); - if (!Tok.is(AsmToken::Identifier)) - return MatchOperand_NoMatch; - unsigned CC = ARMCondCodeFromString(Tok.getString()); - if (CC == ~0U) - return MatchOperand_NoMatch; - Parser.Lex(); // Eat the token. - - Operands.push_back(ARMOperand::CreateCondCode(ARMCC::CondCodes(CC), S)); - - return MatchOperand_Success; -} - -/// parseCoprocNumOperand - Try to parse an coprocessor number operand. The -/// token must be an Identifier when called, and if it is a coprocessor -/// number, the token is eaten and the operand is added to the operand list. -OperandMatchResultTy -ARMAsmParser::parseCoprocNumOperand(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - SMLoc S = Parser.getTok().getLoc(); - const AsmToken &Tok = Parser.getTok(); - if (Tok.isNot(AsmToken::Identifier)) - return MatchOperand_NoMatch; - - int Num = MatchCoprocessorOperandName(Tok.getString(), 'p'); - if (Num == -1) - return MatchOperand_NoMatch; - // ARMv7 and v8 don't allow cp10/cp11 due to VFP/NEON specific instructions - if ((hasV7Ops() || hasV8Ops()) && (Num == 10 || Num == 11)) - return MatchOperand_NoMatch; - - Parser.Lex(); // Eat identifier token. - Operands.push_back(ARMOperand::CreateCoprocNum(Num, S)); - return MatchOperand_Success; -} - -/// parseCoprocRegOperand - Try to parse an coprocessor register operand. The -/// token must be an Identifier when called, and if it is a coprocessor -/// number, the token is eaten and the operand is added to the operand list. -OperandMatchResultTy -ARMAsmParser::parseCoprocRegOperand(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - SMLoc S = Parser.getTok().getLoc(); - const AsmToken &Tok = Parser.getTok(); - if (Tok.isNot(AsmToken::Identifier)) - return MatchOperand_NoMatch; - - int Reg = MatchCoprocessorOperandName(Tok.getString(), 'c'); - if (Reg == -1) - return MatchOperand_NoMatch; - - Parser.Lex(); // Eat identifier token. - Operands.push_back(ARMOperand::CreateCoprocReg(Reg, S)); - return MatchOperand_Success; -} - -/// parseCoprocOptionOperand - Try to parse an coprocessor option operand. -/// coproc_option : '{' imm0_255 '}' -OperandMatchResultTy -ARMAsmParser::parseCoprocOptionOperand(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - SMLoc S = Parser.getTok().getLoc(); - - // If this isn't a '{', this isn't a coprocessor immediate operand. - if (Parser.getTok().isNot(AsmToken::LCurly)) - return MatchOperand_NoMatch; - Parser.Lex(); // Eat the '{' - - const MCExpr *Expr; - SMLoc Loc = Parser.getTok().getLoc(); - if (getParser().parseExpression(Expr)) { - Error(Loc, "illegal expression"); - return MatchOperand_ParseFail; - } - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr); - if (!CE || CE->getValue() < 0 || CE->getValue() > 255) { - Error(Loc, "coprocessor option must be an immediate in range [0, 255]"); - return MatchOperand_ParseFail; - } - int Val = CE->getValue(); - - // Check for and consume the closing '}' - if (Parser.getTok().isNot(AsmToken::RCurly)) - return MatchOperand_ParseFail; - SMLoc E = Parser.getTok().getEndLoc(); - Parser.Lex(); // Eat the '}' - - Operands.push_back(ARMOperand::CreateCoprocOption(Val, S, E)); - return MatchOperand_Success; -} - -// For register list parsing, we need to map from raw GPR register numbering -// to the enumeration values. The enumeration values aren't sorted by -// register number due to our using "sp", "lr" and "pc" as canonical names. -static unsigned getNextRegister(unsigned Reg) { - // If this is a GPR, we need to do it manually, otherwise we can rely - // on the sort ordering of the enumeration since the other reg-classes - // are sane. - if (!ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg)) - return Reg + 1; - switch(Reg) { - default: llvm_unreachable("Invalid GPR number!"); - case ARM::R0: return ARM::R1; case ARM::R1: return ARM::R2; - case ARM::R2: return ARM::R3; case ARM::R3: return ARM::R4; - case ARM::R4: return ARM::R5; case ARM::R5: return ARM::R6; - case ARM::R6: return ARM::R7; case ARM::R7: return ARM::R8; - case ARM::R8: return ARM::R9; case ARM::R9: return ARM::R10; - case ARM::R10: return ARM::R11; case ARM::R11: return ARM::R12; - case ARM::R12: return ARM::SP; case ARM::SP: return ARM::LR; - case ARM::LR: return ARM::PC; case ARM::PC: return ARM::R0; - } -} - -/// Parse a register list. -bool ARMAsmParser::parseRegisterList(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - if (Parser.getTok().isNot(AsmToken::LCurly)) - return TokError("Token is not a Left Curly Brace"); - SMLoc S = Parser.getTok().getLoc(); - Parser.Lex(); // Eat '{' token. - SMLoc RegLoc = Parser.getTok().getLoc(); - - // Check the first register in the list to see what register class - // this is a list of. - int Reg = tryParseRegister(); - if (Reg == -1) - return Error(RegLoc, "register expected"); - - // The reglist instructions have at most 16 registers, so reserve - // space for that many. - int EReg = 0; - SmallVector<std::pair<unsigned, unsigned>, 16> Registers; - - // Allow Q regs and just interpret them as the two D sub-registers. - if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) { - Reg = getDRegFromQReg(Reg); - EReg = MRI->getEncodingValue(Reg); - Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg)); - ++Reg; - } - const MCRegisterClass *RC; - if (ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg)) - RC = &ARMMCRegisterClasses[ARM::GPRRegClassID]; - else if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg)) - RC = &ARMMCRegisterClasses[ARM::DPRRegClassID]; - else if (ARMMCRegisterClasses[ARM::SPRRegClassID].contains(Reg)) - RC = &ARMMCRegisterClasses[ARM::SPRRegClassID]; - else - return Error(RegLoc, "invalid register in register list"); - - // Store the register. - EReg = MRI->getEncodingValue(Reg); - Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg)); - - // This starts immediately after the first register token in the list, - // so we can see either a comma or a minus (range separator) as a legal - // next token. - while (Parser.getTok().is(AsmToken::Comma) || - Parser.getTok().is(AsmToken::Minus)) { - if (Parser.getTok().is(AsmToken::Minus)) { - Parser.Lex(); // Eat the minus. - SMLoc AfterMinusLoc = Parser.getTok().getLoc(); - int EndReg = tryParseRegister(); - if (EndReg == -1) - return Error(AfterMinusLoc, "register expected"); - // Allow Q regs and just interpret them as the two D sub-registers. - if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(EndReg)) - EndReg = getDRegFromQReg(EndReg) + 1; - // If the register is the same as the start reg, there's nothing - // more to do. - if (Reg == EndReg) - continue; - // The register must be in the same register class as the first. - if (!RC->contains(EndReg)) - return Error(AfterMinusLoc, "invalid register in register list"); - // Ranges must go from low to high. - if (MRI->getEncodingValue(Reg) > MRI->getEncodingValue(EndReg)) - return Error(AfterMinusLoc, "bad range in register list"); - - // Add all the registers in the range to the register list. - while (Reg != EndReg) { - Reg = getNextRegister(Reg); - EReg = MRI->getEncodingValue(Reg); - Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg)); - } - continue; - } - Parser.Lex(); // Eat the comma. - RegLoc = Parser.getTok().getLoc(); - int OldReg = Reg; - const AsmToken RegTok = Parser.getTok(); - Reg = tryParseRegister(); - if (Reg == -1) - return Error(RegLoc, "register expected"); - // Allow Q regs and just interpret them as the two D sub-registers. - bool isQReg = false; - if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) { - Reg = getDRegFromQReg(Reg); - isQReg = true; - } - // The register must be in the same register class as the first. - if (!RC->contains(Reg)) - return Error(RegLoc, "invalid register in register list"); - // List must be monotonically increasing. - if (MRI->getEncodingValue(Reg) < MRI->getEncodingValue(OldReg)) { - if (ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg)) - Warning(RegLoc, "register list not in ascending order"); - else - return Error(RegLoc, "register list not in ascending order"); - } - if (MRI->getEncodingValue(Reg) == MRI->getEncodingValue(OldReg)) { - Warning(RegLoc, "duplicated register (" + RegTok.getString() + - ") in register list"); - continue; - } - // VFP register lists must also be contiguous. - if (RC != &ARMMCRegisterClasses[ARM::GPRRegClassID] && - Reg != OldReg + 1) - return Error(RegLoc, "non-contiguous register range"); - EReg = MRI->getEncodingValue(Reg); - Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg)); - if (isQReg) { - EReg = MRI->getEncodingValue(++Reg); - Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg)); - } - } - - if (Parser.getTok().isNot(AsmToken::RCurly)) - return Error(Parser.getTok().getLoc(), "'}' expected"); - SMLoc E = Parser.getTok().getEndLoc(); - Parser.Lex(); // Eat '}' token. - - // Push the register list operand. - Operands.push_back(ARMOperand::CreateRegList(Registers, S, E)); - - // The ARM system instruction variants for LDM/STM have a '^' token here. - if (Parser.getTok().is(AsmToken::Caret)) { - Operands.push_back(ARMOperand::CreateToken("^",Parser.getTok().getLoc())); - Parser.Lex(); // Eat '^' token. - } - - return false; -} - -// Helper function to parse the lane index for vector lists. -OperandMatchResultTy ARMAsmParser:: -parseVectorLane(VectorLaneTy &LaneKind, unsigned &Index, SMLoc &EndLoc) { - MCAsmParser &Parser = getParser(); - Index = 0; // Always return a defined index value. - if (Parser.getTok().is(AsmToken::LBrac)) { - Parser.Lex(); // Eat the '['. - if (Parser.getTok().is(AsmToken::RBrac)) { - // "Dn[]" is the 'all lanes' syntax. - LaneKind = AllLanes; - EndLoc = Parser.getTok().getEndLoc(); - Parser.Lex(); // Eat the ']'. - return MatchOperand_Success; - } - - // There's an optional '#' token here. Normally there wouldn't be, but - // inline assemble puts one in, and it's friendly to accept that. - if (Parser.getTok().is(AsmToken::Hash)) - Parser.Lex(); // Eat '#' or '$'. - - const MCExpr *LaneIndex; - SMLoc Loc = Parser.getTok().getLoc(); - if (getParser().parseExpression(LaneIndex)) { - Error(Loc, "illegal expression"); - return MatchOperand_ParseFail; - } - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(LaneIndex); - if (!CE) { - Error(Loc, "lane index must be empty or an integer"); - return MatchOperand_ParseFail; - } - if (Parser.getTok().isNot(AsmToken::RBrac)) { - Error(Parser.getTok().getLoc(), "']' expected"); - return MatchOperand_ParseFail; - } - EndLoc = Parser.getTok().getEndLoc(); - Parser.Lex(); // Eat the ']'. - int64_t Val = CE->getValue(); - - // FIXME: Make this range check context sensitive for .8, .16, .32. - if (Val < 0 || Val > 7) { - Error(Parser.getTok().getLoc(), "lane index out of range"); - return MatchOperand_ParseFail; - } - Index = Val; - LaneKind = IndexedLane; - return MatchOperand_Success; - } - LaneKind = NoLanes; - return MatchOperand_Success; -} - -// parse a vector register list -OperandMatchResultTy -ARMAsmParser::parseVectorList(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - VectorLaneTy LaneKind; - unsigned LaneIndex; - SMLoc S = Parser.getTok().getLoc(); - // As an extension (to match gas), support a plain D register or Q register - // (without encosing curly braces) as a single or double entry list, - // respectively. - if (Parser.getTok().is(AsmToken::Identifier)) { - SMLoc E = Parser.getTok().getEndLoc(); - int Reg = tryParseRegister(); - if (Reg == -1) - return MatchOperand_NoMatch; - if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg)) { - OperandMatchResultTy Res = parseVectorLane(LaneKind, LaneIndex, E); - if (Res != MatchOperand_Success) - return Res; - switch (LaneKind) { - case NoLanes: - Operands.push_back(ARMOperand::CreateVectorList(Reg, 1, false, S, E)); - break; - case AllLanes: - Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 1, false, - S, E)); - break; - case IndexedLane: - Operands.push_back(ARMOperand::CreateVectorListIndexed(Reg, 1, - LaneIndex, - false, S, E)); - break; - } - return MatchOperand_Success; - } - if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) { - Reg = getDRegFromQReg(Reg); - OperandMatchResultTy Res = parseVectorLane(LaneKind, LaneIndex, E); - if (Res != MatchOperand_Success) - return Res; - switch (LaneKind) { - case NoLanes: - Reg = MRI->getMatchingSuperReg(Reg, ARM::dsub_0, - &ARMMCRegisterClasses[ARM::DPairRegClassID]); - Operands.push_back(ARMOperand::CreateVectorList(Reg, 2, false, S, E)); - break; - case AllLanes: - Reg = MRI->getMatchingSuperReg(Reg, ARM::dsub_0, - &ARMMCRegisterClasses[ARM::DPairRegClassID]); - Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 2, false, - S, E)); - break; - case IndexedLane: - Operands.push_back(ARMOperand::CreateVectorListIndexed(Reg, 2, - LaneIndex, - false, S, E)); - break; - } - return MatchOperand_Success; - } - Error(S, "vector register expected"); - return MatchOperand_ParseFail; - } - - if (Parser.getTok().isNot(AsmToken::LCurly)) - return MatchOperand_NoMatch; - - Parser.Lex(); // Eat '{' token. - SMLoc RegLoc = Parser.getTok().getLoc(); - - int Reg = tryParseRegister(); - if (Reg == -1) { - Error(RegLoc, "register expected"); - return MatchOperand_ParseFail; - } - unsigned Count = 1; - int Spacing = 0; - unsigned FirstReg = Reg; - // The list is of D registers, but we also allow Q regs and just interpret - // them as the two D sub-registers. - if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) { - FirstReg = Reg = getDRegFromQReg(Reg); - Spacing = 1; // double-spacing requires explicit D registers, otherwise - // it's ambiguous with four-register single spaced. - ++Reg; - ++Count; - } - - SMLoc E; - if (parseVectorLane(LaneKind, LaneIndex, E) != MatchOperand_Success) - return MatchOperand_ParseFail; - - while (Parser.getTok().is(AsmToken::Comma) || - Parser.getTok().is(AsmToken::Minus)) { - if (Parser.getTok().is(AsmToken::Minus)) { - if (!Spacing) - Spacing = 1; // Register range implies a single spaced list. - else if (Spacing == 2) { - Error(Parser.getTok().getLoc(), - "sequential registers in double spaced list"); - return MatchOperand_ParseFail; - } - Parser.Lex(); // Eat the minus. - SMLoc AfterMinusLoc = Parser.getTok().getLoc(); - int EndReg = tryParseRegister(); - if (EndReg == -1) { - Error(AfterMinusLoc, "register expected"); - return MatchOperand_ParseFail; - } - // Allow Q regs and just interpret them as the two D sub-registers. - if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(EndReg)) - EndReg = getDRegFromQReg(EndReg) + 1; - // If the register is the same as the start reg, there's nothing - // more to do. - if (Reg == EndReg) - continue; - // The register must be in the same register class as the first. - if (!ARMMCRegisterClasses[ARM::DPRRegClassID].contains(EndReg)) { - Error(AfterMinusLoc, "invalid register in register list"); - return MatchOperand_ParseFail; - } - // Ranges must go from low to high. - if (Reg > EndReg) { - Error(AfterMinusLoc, "bad range in register list"); - return MatchOperand_ParseFail; - } - // Parse the lane specifier if present. - VectorLaneTy NextLaneKind; - unsigned NextLaneIndex; - if (parseVectorLane(NextLaneKind, NextLaneIndex, E) != - MatchOperand_Success) - return MatchOperand_ParseFail; - if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) { - Error(AfterMinusLoc, "mismatched lane index in register list"); - return MatchOperand_ParseFail; - } - - // Add all the registers in the range to the register list. - Count += EndReg - Reg; - Reg = EndReg; - continue; - } - Parser.Lex(); // Eat the comma. - RegLoc = Parser.getTok().getLoc(); - int OldReg = Reg; - Reg = tryParseRegister(); - if (Reg == -1) { - Error(RegLoc, "register expected"); - return MatchOperand_ParseFail; - } - // vector register lists must be contiguous. - // It's OK to use the enumeration values directly here rather, as the - // VFP register classes have the enum sorted properly. - // - // The list is of D registers, but we also allow Q regs and just interpret - // them as the two D sub-registers. - if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) { - if (!Spacing) - Spacing = 1; // Register range implies a single spaced list. - else if (Spacing == 2) { - Error(RegLoc, - "invalid register in double-spaced list (must be 'D' register')"); - return MatchOperand_ParseFail; - } - Reg = getDRegFromQReg(Reg); - if (Reg != OldReg + 1) { - Error(RegLoc, "non-contiguous register range"); - return MatchOperand_ParseFail; - } - ++Reg; - Count += 2; - // Parse the lane specifier if present. - VectorLaneTy NextLaneKind; - unsigned NextLaneIndex; - SMLoc LaneLoc = Parser.getTok().getLoc(); - if (parseVectorLane(NextLaneKind, NextLaneIndex, E) != - MatchOperand_Success) - return MatchOperand_ParseFail; - if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) { - Error(LaneLoc, "mismatched lane index in register list"); - return MatchOperand_ParseFail; - } - continue; - } - // Normal D register. - // Figure out the register spacing (single or double) of the list if - // we don't know it already. - if (!Spacing) - Spacing = 1 + (Reg == OldReg + 2); - - // Just check that it's contiguous and keep going. - if (Reg != OldReg + Spacing) { - Error(RegLoc, "non-contiguous register range"); - return MatchOperand_ParseFail; - } - ++Count; - // Parse the lane specifier if present. - VectorLaneTy NextLaneKind; - unsigned NextLaneIndex; - SMLoc EndLoc = Parser.getTok().getLoc(); - if (parseVectorLane(NextLaneKind, NextLaneIndex, E) != MatchOperand_Success) - return MatchOperand_ParseFail; - if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) { - Error(EndLoc, "mismatched lane index in register list"); - return MatchOperand_ParseFail; - } - } - - if (Parser.getTok().isNot(AsmToken::RCurly)) { - Error(Parser.getTok().getLoc(), "'}' expected"); - return MatchOperand_ParseFail; - } - E = Parser.getTok().getEndLoc(); - Parser.Lex(); // Eat '}' token. - - switch (LaneKind) { - case NoLanes: - // Two-register operands have been converted to the - // composite register classes. - if (Count == 2) { - const MCRegisterClass *RC = (Spacing == 1) ? - &ARMMCRegisterClasses[ARM::DPairRegClassID] : - &ARMMCRegisterClasses[ARM::DPairSpcRegClassID]; - FirstReg = MRI->getMatchingSuperReg(FirstReg, ARM::dsub_0, RC); - } - Operands.push_back(ARMOperand::CreateVectorList(FirstReg, Count, - (Spacing == 2), S, E)); - break; - case AllLanes: - // Two-register operands have been converted to the - // composite register classes. - if (Count == 2) { - const MCRegisterClass *RC = (Spacing == 1) ? - &ARMMCRegisterClasses[ARM::DPairRegClassID] : - &ARMMCRegisterClasses[ARM::DPairSpcRegClassID]; - FirstReg = MRI->getMatchingSuperReg(FirstReg, ARM::dsub_0, RC); - } - Operands.push_back(ARMOperand::CreateVectorListAllLanes(FirstReg, Count, - (Spacing == 2), - S, E)); - break; - case IndexedLane: - Operands.push_back(ARMOperand::CreateVectorListIndexed(FirstReg, Count, - LaneIndex, - (Spacing == 2), - S, E)); - break; - } - return MatchOperand_Success; -} - -/// parseMemBarrierOptOperand - Try to parse DSB/DMB data barrier options. -OperandMatchResultTy -ARMAsmParser::parseMemBarrierOptOperand(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - SMLoc S = Parser.getTok().getLoc(); - const AsmToken &Tok = Parser.getTok(); - unsigned Opt; - - if (Tok.is(AsmToken::Identifier)) { - StringRef OptStr = Tok.getString(); - - Opt = StringSwitch<unsigned>(OptStr.slice(0, OptStr.size()).lower()) - .Case("sy", ARM_MB::SY) - .Case("st", ARM_MB::ST) - .Case("ld", ARM_MB::LD) - .Case("sh", ARM_MB::ISH) - .Case("ish", ARM_MB::ISH) - .Case("shst", ARM_MB::ISHST) - .Case("ishst", ARM_MB::ISHST) - .Case("ishld", ARM_MB::ISHLD) - .Case("nsh", ARM_MB::NSH) - .Case("un", ARM_MB::NSH) - .Case("nshst", ARM_MB::NSHST) - .Case("nshld", ARM_MB::NSHLD) - .Case("unst", ARM_MB::NSHST) - .Case("osh", ARM_MB::OSH) - .Case("oshst", ARM_MB::OSHST) - .Case("oshld", ARM_MB::OSHLD) - .Default(~0U); - - // ishld, oshld, nshld and ld are only available from ARMv8. - if (!hasV8Ops() && (Opt == ARM_MB::ISHLD || Opt == ARM_MB::OSHLD || - Opt == ARM_MB::NSHLD || Opt == ARM_MB::LD)) - Opt = ~0U; - - if (Opt == ~0U) - return MatchOperand_NoMatch; - - Parser.Lex(); // Eat identifier token. - } else if (Tok.is(AsmToken::Hash) || - Tok.is(AsmToken::Dollar) || - Tok.is(AsmToken::Integer)) { - if (Parser.getTok().isNot(AsmToken::Integer)) - Parser.Lex(); // Eat '#' or '$'. - SMLoc Loc = Parser.getTok().getLoc(); - - const MCExpr *MemBarrierID; - if (getParser().parseExpression(MemBarrierID)) { - Error(Loc, "illegal expression"); - return MatchOperand_ParseFail; - } - - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(MemBarrierID); - if (!CE) { - Error(Loc, "constant expression expected"); - return MatchOperand_ParseFail; - } - - int Val = CE->getValue(); - if (Val & ~0xf) { - Error(Loc, "immediate value out of range"); - return MatchOperand_ParseFail; - } - - Opt = ARM_MB::RESERVED_0 + Val; - } else - return MatchOperand_ParseFail; - - Operands.push_back(ARMOperand::CreateMemBarrierOpt((ARM_MB::MemBOpt)Opt, S)); - return MatchOperand_Success; -} - -OperandMatchResultTy -ARMAsmParser::parseTraceSyncBarrierOptOperand(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - SMLoc S = Parser.getTok().getLoc(); - const AsmToken &Tok = Parser.getTok(); - - if (Tok.isNot(AsmToken::Identifier)) - return MatchOperand_NoMatch; - - if (!Tok.getString().equals_lower("csync")) - return MatchOperand_NoMatch; - - Parser.Lex(); // Eat identifier token. - - Operands.push_back(ARMOperand::CreateTraceSyncBarrierOpt(ARM_TSB::CSYNC, S)); - return MatchOperand_Success; -} - -/// parseInstSyncBarrierOptOperand - Try to parse ISB inst sync barrier options. -OperandMatchResultTy -ARMAsmParser::parseInstSyncBarrierOptOperand(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - SMLoc S = Parser.getTok().getLoc(); - const AsmToken &Tok = Parser.getTok(); - unsigned Opt; - - if (Tok.is(AsmToken::Identifier)) { - StringRef OptStr = Tok.getString(); - - if (OptStr.equals_lower("sy")) - Opt = ARM_ISB::SY; - else - return MatchOperand_NoMatch; - - Parser.Lex(); // Eat identifier token. - } else if (Tok.is(AsmToken::Hash) || - Tok.is(AsmToken::Dollar) || - Tok.is(AsmToken::Integer)) { - if (Parser.getTok().isNot(AsmToken::Integer)) - Parser.Lex(); // Eat '#' or '$'. - SMLoc Loc = Parser.getTok().getLoc(); - - const MCExpr *ISBarrierID; - if (getParser().parseExpression(ISBarrierID)) { - Error(Loc, "illegal expression"); - return MatchOperand_ParseFail; - } - - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ISBarrierID); - if (!CE) { - Error(Loc, "constant expression expected"); - return MatchOperand_ParseFail; - } - - int Val = CE->getValue(); - if (Val & ~0xf) { - Error(Loc, "immediate value out of range"); - return MatchOperand_ParseFail; - } - - Opt = ARM_ISB::RESERVED_0 + Val; - } else - return MatchOperand_ParseFail; - - Operands.push_back(ARMOperand::CreateInstSyncBarrierOpt( - (ARM_ISB::InstSyncBOpt)Opt, S)); - return MatchOperand_Success; -} - - -/// parseProcIFlagsOperand - Try to parse iflags from CPS instruction. -OperandMatchResultTy -ARMAsmParser::parseProcIFlagsOperand(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - SMLoc S = Parser.getTok().getLoc(); - const AsmToken &Tok = Parser.getTok(); - if (!Tok.is(AsmToken::Identifier)) - return MatchOperand_NoMatch; - StringRef IFlagsStr = Tok.getString(); - - // An iflags string of "none" is interpreted to mean that none of the AIF - // bits are set. Not a terribly useful instruction, but a valid encoding. - unsigned IFlags = 0; - if (IFlagsStr != "none") { - for (int i = 0, e = IFlagsStr.size(); i != e; ++i) { - unsigned Flag = StringSwitch<unsigned>(IFlagsStr.substr(i, 1).lower()) - .Case("a", ARM_PROC::A) - .Case("i", ARM_PROC::I) - .Case("f", ARM_PROC::F) - .Default(~0U); - - // If some specific iflag is already set, it means that some letter is - // present more than once, this is not acceptable. - if (Flag == ~0U || (IFlags & Flag)) - return MatchOperand_NoMatch; - - IFlags |= Flag; - } - } - - Parser.Lex(); // Eat identifier token. - Operands.push_back(ARMOperand::CreateProcIFlags((ARM_PROC::IFlags)IFlags, S)); - return MatchOperand_Success; -} - -/// parseMSRMaskOperand - Try to parse mask flags from MSR instruction. -OperandMatchResultTy -ARMAsmParser::parseMSRMaskOperand(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - SMLoc S = Parser.getTok().getLoc(); - const AsmToken &Tok = Parser.getTok(); - - if (Tok.is(AsmToken::Integer)) { - int64_t Val = Tok.getIntVal(); - if (Val > 255 || Val < 0) { - return MatchOperand_NoMatch; - } - unsigned SYSmvalue = Val & 0xFF; - Parser.Lex(); - Operands.push_back(ARMOperand::CreateMSRMask(SYSmvalue, S)); - return MatchOperand_Success; - } - - if (!Tok.is(AsmToken::Identifier)) - return MatchOperand_NoMatch; - StringRef Mask = Tok.getString(); - - if (isMClass()) { - auto TheReg = ARMSysReg::lookupMClassSysRegByName(Mask.lower()); - if (!TheReg || !TheReg->hasRequiredFeatures(getSTI().getFeatureBits())) - return MatchOperand_NoMatch; - - unsigned SYSmvalue = TheReg->Encoding & 0xFFF; - - Parser.Lex(); // Eat identifier token. - Operands.push_back(ARMOperand::CreateMSRMask(SYSmvalue, S)); - return MatchOperand_Success; - } - - // Split spec_reg from flag, example: CPSR_sxf => "CPSR" and "sxf" - size_t Start = 0, Next = Mask.find('_'); - StringRef Flags = ""; - std::string SpecReg = Mask.slice(Start, Next).lower(); - if (Next != StringRef::npos) - Flags = Mask.slice(Next+1, Mask.size()); - - // FlagsVal contains the complete mask: - // 3-0: Mask - // 4: Special Reg (cpsr, apsr => 0; spsr => 1) - unsigned FlagsVal = 0; - - if (SpecReg == "apsr") { - FlagsVal = StringSwitch<unsigned>(Flags) - .Case("nzcvq", 0x8) // same as CPSR_f - .Case("g", 0x4) // same as CPSR_s - .Case("nzcvqg", 0xc) // same as CPSR_fs - .Default(~0U); - - if (FlagsVal == ~0U) { - if (!Flags.empty()) - return MatchOperand_NoMatch; - else - FlagsVal = 8; // No flag - } - } else if (SpecReg == "cpsr" || SpecReg == "spsr") { - // cpsr_all is an alias for cpsr_fc, as is plain cpsr. - if (Flags == "all" || Flags == "") - Flags = "fc"; - for (int i = 0, e = Flags.size(); i != e; ++i) { - unsigned Flag = StringSwitch<unsigned>(Flags.substr(i, 1)) - .Case("c", 1) - .Case("x", 2) - .Case("s", 4) - .Case("f", 8) - .Default(~0U); - - // If some specific flag is already set, it means that some letter is - // present more than once, this is not acceptable. - if (Flag == ~0U || (FlagsVal & Flag)) - return MatchOperand_NoMatch; - FlagsVal |= Flag; - } - } else // No match for special register. - return MatchOperand_NoMatch; - - // Special register without flags is NOT equivalent to "fc" flags. - // NOTE: This is a divergence from gas' behavior. Uncommenting the following - // two lines would enable gas compatibility at the expense of breaking - // round-tripping. - // - // if (!FlagsVal) - // FlagsVal = 0x9; - - // Bit 4: Special Reg (cpsr, apsr => 0; spsr => 1) - if (SpecReg == "spsr") - FlagsVal |= 16; - - Parser.Lex(); // Eat identifier token. - Operands.push_back(ARMOperand::CreateMSRMask(FlagsVal, S)); - return MatchOperand_Success; -} - -/// parseBankedRegOperand - Try to parse a banked register (e.g. "lr_irq") for -/// use in the MRS/MSR instructions added to support virtualization. -OperandMatchResultTy -ARMAsmParser::parseBankedRegOperand(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - SMLoc S = Parser.getTok().getLoc(); - const AsmToken &Tok = Parser.getTok(); - if (!Tok.is(AsmToken::Identifier)) - return MatchOperand_NoMatch; - StringRef RegName = Tok.getString(); - - auto TheReg = ARMBankedReg::lookupBankedRegByName(RegName.lower()); - if (!TheReg) - return MatchOperand_NoMatch; - unsigned Encoding = TheReg->Encoding; - - Parser.Lex(); // Eat identifier token. - Operands.push_back(ARMOperand::CreateBankedReg(Encoding, S)); - return MatchOperand_Success; -} - -OperandMatchResultTy -ARMAsmParser::parsePKHImm(OperandVector &Operands, StringRef Op, int Low, - int High) { - MCAsmParser &Parser = getParser(); - const AsmToken &Tok = Parser.getTok(); - if (Tok.isNot(AsmToken::Identifier)) { - Error(Parser.getTok().getLoc(), Op + " operand expected."); - return MatchOperand_ParseFail; - } - StringRef ShiftName = Tok.getString(); - std::string LowerOp = Op.lower(); - std::string UpperOp = Op.upper(); - if (ShiftName != LowerOp && ShiftName != UpperOp) { - Error(Parser.getTok().getLoc(), Op + " operand expected."); - return MatchOperand_ParseFail; - } - Parser.Lex(); // Eat shift type token. - - // There must be a '#' and a shift amount. - if (Parser.getTok().isNot(AsmToken::Hash) && - Parser.getTok().isNot(AsmToken::Dollar)) { - Error(Parser.getTok().getLoc(), "'#' expected"); - return MatchOperand_ParseFail; - } - Parser.Lex(); // Eat hash token. - - const MCExpr *ShiftAmount; - SMLoc Loc = Parser.getTok().getLoc(); - SMLoc EndLoc; - if (getParser().parseExpression(ShiftAmount, EndLoc)) { - Error(Loc, "illegal expression"); - return MatchOperand_ParseFail; - } - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount); - if (!CE) { - Error(Loc, "constant expression expected"); - return MatchOperand_ParseFail; - } - int Val = CE->getValue(); - if (Val < Low || Val > High) { - Error(Loc, "immediate value out of range"); - return MatchOperand_ParseFail; - } - - Operands.push_back(ARMOperand::CreateImm(CE, Loc, EndLoc)); - - return MatchOperand_Success; -} - -OperandMatchResultTy -ARMAsmParser::parseSetEndImm(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - const AsmToken &Tok = Parser.getTok(); - SMLoc S = Tok.getLoc(); - if (Tok.isNot(AsmToken::Identifier)) { - Error(S, "'be' or 'le' operand expected"); - return MatchOperand_ParseFail; - } - int Val = StringSwitch<int>(Tok.getString().lower()) - .Case("be", 1) - .Case("le", 0) - .Default(-1); - Parser.Lex(); // Eat the token. - - if (Val == -1) { - Error(S, "'be' or 'le' operand expected"); - return MatchOperand_ParseFail; - } - Operands.push_back(ARMOperand::CreateImm(MCConstantExpr::create(Val, - getContext()), - S, Tok.getEndLoc())); - return MatchOperand_Success; -} - -/// parseShifterImm - Parse the shifter immediate operand for SSAT/USAT -/// instructions. Legal values are: -/// lsl #n 'n' in [0,31] -/// asr #n 'n' in [1,32] -/// n == 32 encoded as n == 0. -OperandMatchResultTy -ARMAsmParser::parseShifterImm(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - const AsmToken &Tok = Parser.getTok(); - SMLoc S = Tok.getLoc(); - if (Tok.isNot(AsmToken::Identifier)) { - Error(S, "shift operator 'asr' or 'lsl' expected"); - return MatchOperand_ParseFail; - } - StringRef ShiftName = Tok.getString(); - bool isASR; - if (ShiftName == "lsl" || ShiftName == "LSL") - isASR = false; - else if (ShiftName == "asr" || ShiftName == "ASR") - isASR = true; - else { - Error(S, "shift operator 'asr' or 'lsl' expected"); - return MatchOperand_ParseFail; - } - Parser.Lex(); // Eat the operator. - - // A '#' and a shift amount. - if (Parser.getTok().isNot(AsmToken::Hash) && - Parser.getTok().isNot(AsmToken::Dollar)) { - Error(Parser.getTok().getLoc(), "'#' expected"); - return MatchOperand_ParseFail; - } - Parser.Lex(); // Eat hash token. - SMLoc ExLoc = Parser.getTok().getLoc(); - - const MCExpr *ShiftAmount; - SMLoc EndLoc; - if (getParser().parseExpression(ShiftAmount, EndLoc)) { - Error(ExLoc, "malformed shift expression"); - return MatchOperand_ParseFail; - } - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount); - if (!CE) { - Error(ExLoc, "shift amount must be an immediate"); - return MatchOperand_ParseFail; - } - - int64_t Val = CE->getValue(); - if (isASR) { - // Shift amount must be in [1,32] - if (Val < 1 || Val > 32) { - Error(ExLoc, "'asr' shift amount must be in range [1,32]"); - return MatchOperand_ParseFail; - } - // asr #32 encoded as asr #0, but is not allowed in Thumb2 mode. - if (isThumb() && Val == 32) { - Error(ExLoc, "'asr #32' shift amount not allowed in Thumb mode"); - return MatchOperand_ParseFail; - } - if (Val == 32) Val = 0; - } else { - // Shift amount must be in [1,32] - if (Val < 0 || Val > 31) { - Error(ExLoc, "'lsr' shift amount must be in range [0,31]"); - return MatchOperand_ParseFail; - } - } - - Operands.push_back(ARMOperand::CreateShifterImm(isASR, Val, S, EndLoc)); - - return MatchOperand_Success; -} - -/// parseRotImm - Parse the shifter immediate operand for SXTB/UXTB family -/// of instructions. Legal values are: -/// ror #n 'n' in {0, 8, 16, 24} -OperandMatchResultTy -ARMAsmParser::parseRotImm(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - const AsmToken &Tok = Parser.getTok(); - SMLoc S = Tok.getLoc(); - if (Tok.isNot(AsmToken::Identifier)) - return MatchOperand_NoMatch; - StringRef ShiftName = Tok.getString(); - if (ShiftName != "ror" && ShiftName != "ROR") - return MatchOperand_NoMatch; - Parser.Lex(); // Eat the operator. - - // A '#' and a rotate amount. - if (Parser.getTok().isNot(AsmToken::Hash) && - Parser.getTok().isNot(AsmToken::Dollar)) { - Error(Parser.getTok().getLoc(), "'#' expected"); - return MatchOperand_ParseFail; - } - Parser.Lex(); // Eat hash token. - SMLoc ExLoc = Parser.getTok().getLoc(); - - const MCExpr *ShiftAmount; - SMLoc EndLoc; - if (getParser().parseExpression(ShiftAmount, EndLoc)) { - Error(ExLoc, "malformed rotate expression"); - return MatchOperand_ParseFail; - } - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount); - if (!CE) { - Error(ExLoc, "rotate amount must be an immediate"); - return MatchOperand_ParseFail; - } - - int64_t Val = CE->getValue(); - // Shift amount must be in {0, 8, 16, 24} (0 is undocumented extension) - // normally, zero is represented in asm by omitting the rotate operand - // entirely. - if (Val != 8 && Val != 16 && Val != 24 && Val != 0) { - Error(ExLoc, "'ror' rotate amount must be 8, 16, or 24"); - return MatchOperand_ParseFail; - } - - Operands.push_back(ARMOperand::CreateRotImm(Val, S, EndLoc)); - - return MatchOperand_Success; -} - -OperandMatchResultTy -ARMAsmParser::parseModImm(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - MCAsmLexer &Lexer = getLexer(); - int64_t Imm1, Imm2; - - SMLoc S = Parser.getTok().getLoc(); - - // 1) A mod_imm operand can appear in the place of a register name: - // add r0, #mod_imm - // add r0, r0, #mod_imm - // to correctly handle the latter, we bail out as soon as we see an - // identifier. - // - // 2) Similarly, we do not want to parse into complex operands: - // mov r0, #mod_imm - // mov r0, :lower16:(_foo) - if (Parser.getTok().is(AsmToken::Identifier) || - Parser.getTok().is(AsmToken::Colon)) - return MatchOperand_NoMatch; - - // Hash (dollar) is optional as per the ARMARM - if (Parser.getTok().is(AsmToken::Hash) || - Parser.getTok().is(AsmToken::Dollar)) { - // Avoid parsing into complex operands (#:) - if (Lexer.peekTok().is(AsmToken::Colon)) - return MatchOperand_NoMatch; - - // Eat the hash (dollar) - Parser.Lex(); - } - - SMLoc Sx1, Ex1; - Sx1 = Parser.getTok().getLoc(); - const MCExpr *Imm1Exp; - if (getParser().parseExpression(Imm1Exp, Ex1)) { - Error(Sx1, "malformed expression"); - return MatchOperand_ParseFail; - } - - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm1Exp); - - if (CE) { - // Immediate must fit within 32-bits - Imm1 = CE->getValue(); - int Enc = ARM_AM::getSOImmVal(Imm1); - if (Enc != -1 && Parser.getTok().is(AsmToken::EndOfStatement)) { - // We have a match! - Operands.push_back(ARMOperand::CreateModImm((Enc & 0xFF), - (Enc & 0xF00) >> 7, - Sx1, Ex1)); - return MatchOperand_Success; - } - - // We have parsed an immediate which is not for us, fallback to a plain - // immediate. This can happen for instruction aliases. For an example, - // ARMInstrInfo.td defines the alias [mov <-> mvn] which can transform - // a mov (mvn) with a mod_imm_neg/mod_imm_not operand into the opposite - // instruction with a mod_imm operand. The alias is defined such that the - // parser method is shared, that's why we have to do this here. - if (Parser.getTok().is(AsmToken::EndOfStatement)) { - Operands.push_back(ARMOperand::CreateImm(Imm1Exp, Sx1, Ex1)); - return MatchOperand_Success; - } - } else { - // Operands like #(l1 - l2) can only be evaluated at a later stage (via an - // MCFixup). Fallback to a plain immediate. - Operands.push_back(ARMOperand::CreateImm(Imm1Exp, Sx1, Ex1)); - return MatchOperand_Success; - } - - // From this point onward, we expect the input to be a (#bits, #rot) pair - if (Parser.getTok().isNot(AsmToken::Comma)) { - Error(Sx1, "expected modified immediate operand: #[0, 255], #even[0-30]"); - return MatchOperand_ParseFail; - } - - if (Imm1 & ~0xFF) { - Error(Sx1, "immediate operand must a number in the range [0, 255]"); - return MatchOperand_ParseFail; - } - - // Eat the comma - Parser.Lex(); - - // Repeat for #rot - SMLoc Sx2, Ex2; - Sx2 = Parser.getTok().getLoc(); - - // Eat the optional hash (dollar) - if (Parser.getTok().is(AsmToken::Hash) || - Parser.getTok().is(AsmToken::Dollar)) - Parser.Lex(); - - const MCExpr *Imm2Exp; - if (getParser().parseExpression(Imm2Exp, Ex2)) { - Error(Sx2, "malformed expression"); - return MatchOperand_ParseFail; - } - - CE = dyn_cast<MCConstantExpr>(Imm2Exp); - - if (CE) { - Imm2 = CE->getValue(); - if (!(Imm2 & ~0x1E)) { - // We have a match! - Operands.push_back(ARMOperand::CreateModImm(Imm1, Imm2, S, Ex2)); - return MatchOperand_Success; - } - Error(Sx2, "immediate operand must an even number in the range [0, 30]"); - return MatchOperand_ParseFail; - } else { - Error(Sx2, "constant expression expected"); - return MatchOperand_ParseFail; - } -} - -OperandMatchResultTy -ARMAsmParser::parseBitfield(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - SMLoc S = Parser.getTok().getLoc(); - // The bitfield descriptor is really two operands, the LSB and the width. - if (Parser.getTok().isNot(AsmToken::Hash) && - Parser.getTok().isNot(AsmToken::Dollar)) { - Error(Parser.getTok().getLoc(), "'#' expected"); - return MatchOperand_ParseFail; - } - Parser.Lex(); // Eat hash token. - - const MCExpr *LSBExpr; - SMLoc E = Parser.getTok().getLoc(); - if (getParser().parseExpression(LSBExpr)) { - Error(E, "malformed immediate expression"); - return MatchOperand_ParseFail; - } - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(LSBExpr); - if (!CE) { - Error(E, "'lsb' operand must be an immediate"); - return MatchOperand_ParseFail; - } - - int64_t LSB = CE->getValue(); - // The LSB must be in the range [0,31] - if (LSB < 0 || LSB > 31) { - Error(E, "'lsb' operand must be in the range [0,31]"); - return MatchOperand_ParseFail; - } - E = Parser.getTok().getLoc(); - - // Expect another immediate operand. - if (Parser.getTok().isNot(AsmToken::Comma)) { - Error(Parser.getTok().getLoc(), "too few operands"); - return MatchOperand_ParseFail; - } - Parser.Lex(); // Eat hash token. - if (Parser.getTok().isNot(AsmToken::Hash) && - Parser.getTok().isNot(AsmToken::Dollar)) { - Error(Parser.getTok().getLoc(), "'#' expected"); - return MatchOperand_ParseFail; - } - Parser.Lex(); // Eat hash token. - - const MCExpr *WidthExpr; - SMLoc EndLoc; - if (getParser().parseExpression(WidthExpr, EndLoc)) { - Error(E, "malformed immediate expression"); - return MatchOperand_ParseFail; - } - CE = dyn_cast<MCConstantExpr>(WidthExpr); - if (!CE) { - Error(E, "'width' operand must be an immediate"); - return MatchOperand_ParseFail; - } - - int64_t Width = CE->getValue(); - // The LSB must be in the range [1,32-lsb] - if (Width < 1 || Width > 32 - LSB) { - Error(E, "'width' operand must be in the range [1,32-lsb]"); - return MatchOperand_ParseFail; - } - - Operands.push_back(ARMOperand::CreateBitfield(LSB, Width, S, EndLoc)); - - return MatchOperand_Success; -} - -OperandMatchResultTy -ARMAsmParser::parsePostIdxReg(OperandVector &Operands) { - // Check for a post-index addressing register operand. Specifically: - // postidx_reg := '+' register {, shift} - // | '-' register {, shift} - // | register {, shift} - - // This method must return MatchOperand_NoMatch without consuming any tokens - // in the case where there is no match, as other alternatives take other - // parse methods. - MCAsmParser &Parser = getParser(); - AsmToken Tok = Parser.getTok(); - SMLoc S = Tok.getLoc(); - bool haveEaten = false; - bool isAdd = true; - if (Tok.is(AsmToken::Plus)) { - Parser.Lex(); // Eat the '+' token. - haveEaten = true; - } else if (Tok.is(AsmToken::Minus)) { - Parser.Lex(); // Eat the '-' token. - isAdd = false; - haveEaten = true; - } - - SMLoc E = Parser.getTok().getEndLoc(); - int Reg = tryParseRegister(); - if (Reg == -1) { - if (!haveEaten) - return MatchOperand_NoMatch; - Error(Parser.getTok().getLoc(), "register expected"); - return MatchOperand_ParseFail; - } - - ARM_AM::ShiftOpc ShiftTy = ARM_AM::no_shift; - unsigned ShiftImm = 0; - if (Parser.getTok().is(AsmToken::Comma)) { - Parser.Lex(); // Eat the ','. - if (parseMemRegOffsetShift(ShiftTy, ShiftImm)) - return MatchOperand_ParseFail; - - // FIXME: Only approximates end...may include intervening whitespace. - E = Parser.getTok().getLoc(); - } - - Operands.push_back(ARMOperand::CreatePostIdxReg(Reg, isAdd, ShiftTy, - ShiftImm, S, E)); - - return MatchOperand_Success; -} - -OperandMatchResultTy -ARMAsmParser::parseAM3Offset(OperandVector &Operands) { - // Check for a post-index addressing register operand. Specifically: - // am3offset := '+' register - // | '-' register - // | register - // | # imm - // | # + imm - // | # - imm - - // This method must return MatchOperand_NoMatch without consuming any tokens - // in the case where there is no match, as other alternatives take other - // parse methods. - MCAsmParser &Parser = getParser(); - AsmToken Tok = Parser.getTok(); - SMLoc S = Tok.getLoc(); - - // Do immediates first, as we always parse those if we have a '#'. - if (Parser.getTok().is(AsmToken::Hash) || - Parser.getTok().is(AsmToken::Dollar)) { - Parser.Lex(); // Eat '#' or '$'. - // Explicitly look for a '-', as we need to encode negative zero - // differently. - bool isNegative = Parser.getTok().is(AsmToken::Minus); - const MCExpr *Offset; - SMLoc E; - if (getParser().parseExpression(Offset, E)) - return MatchOperand_ParseFail; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Offset); - if (!CE) { - Error(S, "constant expression expected"); - return MatchOperand_ParseFail; - } - // Negative zero is encoded as the flag value - // std::numeric_limits<int32_t>::min(). - int32_t Val = CE->getValue(); - if (isNegative && Val == 0) - Val = std::numeric_limits<int32_t>::min(); - - Operands.push_back( - ARMOperand::CreateImm(MCConstantExpr::create(Val, getContext()), S, E)); - - return MatchOperand_Success; - } - - bool haveEaten = false; - bool isAdd = true; - if (Tok.is(AsmToken::Plus)) { - Parser.Lex(); // Eat the '+' token. - haveEaten = true; - } else if (Tok.is(AsmToken::Minus)) { - Parser.Lex(); // Eat the '-' token. - isAdd = false; - haveEaten = true; - } - - Tok = Parser.getTok(); - int Reg = tryParseRegister(); - if (Reg == -1) { - if (!haveEaten) - return MatchOperand_NoMatch; - Error(Tok.getLoc(), "register expected"); - return MatchOperand_ParseFail; - } - - Operands.push_back(ARMOperand::CreatePostIdxReg(Reg, isAdd, ARM_AM::no_shift, - 0, S, Tok.getEndLoc())); - - return MatchOperand_Success; -} - -/// Convert parsed operands to MCInst. Needed here because this instruction -/// only has two register operands, but multiplication is commutative so -/// assemblers should accept both "mul rD, rN, rD" and "mul rD, rD, rN". -void ARMAsmParser::cvtThumbMultiply(MCInst &Inst, - const OperandVector &Operands) { - ((ARMOperand &)*Operands[3]).addRegOperands(Inst, 1); - ((ARMOperand &)*Operands[1]).addCCOutOperands(Inst, 1); - // If we have a three-operand form, make sure to set Rn to be the operand - // that isn't the same as Rd. - unsigned RegOp = 4; - if (Operands.size() == 6 && - ((ARMOperand &)*Operands[4]).getReg() == - ((ARMOperand &)*Operands[3]).getReg()) - RegOp = 5; - ((ARMOperand &)*Operands[RegOp]).addRegOperands(Inst, 1); - Inst.addOperand(Inst.getOperand(0)); - ((ARMOperand &)*Operands[2]).addCondCodeOperands(Inst, 2); -} - -void ARMAsmParser::cvtThumbBranches(MCInst &Inst, - const OperandVector &Operands) { - int CondOp = -1, ImmOp = -1; - switch(Inst.getOpcode()) { - case ARM::tB: - case ARM::tBcc: CondOp = 1; ImmOp = 2; break; - - case ARM::t2B: - case ARM::t2Bcc: CondOp = 1; ImmOp = 3; break; - - default: llvm_unreachable("Unexpected instruction in cvtThumbBranches"); - } - // first decide whether or not the branch should be conditional - // by looking at it's location relative to an IT block - if(inITBlock()) { - // inside an IT block we cannot have any conditional branches. any - // such instructions needs to be converted to unconditional form - switch(Inst.getOpcode()) { - case ARM::tBcc: Inst.setOpcode(ARM::tB); break; - case ARM::t2Bcc: Inst.setOpcode(ARM::t2B); break; - } - } else { - // outside IT blocks we can only have unconditional branches with AL - // condition code or conditional branches with non-AL condition code - unsigned Cond = static_cast<ARMOperand &>(*Operands[CondOp]).getCondCode(); - switch(Inst.getOpcode()) { - case ARM::tB: - case ARM::tBcc: - Inst.setOpcode(Cond == ARMCC::AL ? ARM::tB : ARM::tBcc); - break; - case ARM::t2B: - case ARM::t2Bcc: - Inst.setOpcode(Cond == ARMCC::AL ? ARM::t2B : ARM::t2Bcc); - break; - } - } - - // now decide on encoding size based on branch target range - switch(Inst.getOpcode()) { - // classify tB as either t2B or t1B based on range of immediate operand - case ARM::tB: { - ARMOperand &op = static_cast<ARMOperand &>(*Operands[ImmOp]); - if (!op.isSignedOffset<11, 1>() && isThumb() && hasV8MBaseline()) - Inst.setOpcode(ARM::t2B); - break; - } - // classify tBcc as either t2Bcc or t1Bcc based on range of immediate operand - case ARM::tBcc: { - ARMOperand &op = static_cast<ARMOperand &>(*Operands[ImmOp]); - if (!op.isSignedOffset<8, 1>() && isThumb() && hasV8MBaseline()) - Inst.setOpcode(ARM::t2Bcc); - break; - } - } - ((ARMOperand &)*Operands[ImmOp]).addImmOperands(Inst, 1); - ((ARMOperand &)*Operands[CondOp]).addCondCodeOperands(Inst, 2); -} - -/// Parse an ARM memory expression, return false if successful else return true -/// or an error. The first token must be a '[' when called. -bool ARMAsmParser::parseMemory(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - SMLoc S, E; - if (Parser.getTok().isNot(AsmToken::LBrac)) - return TokError("Token is not a Left Bracket"); - S = Parser.getTok().getLoc(); - Parser.Lex(); // Eat left bracket token. - - const AsmToken &BaseRegTok = Parser.getTok(); - int BaseRegNum = tryParseRegister(); - if (BaseRegNum == -1) - return Error(BaseRegTok.getLoc(), "register expected"); - - // The next token must either be a comma, a colon or a closing bracket. - const AsmToken &Tok = Parser.getTok(); - if (!Tok.is(AsmToken::Colon) && !Tok.is(AsmToken::Comma) && - !Tok.is(AsmToken::RBrac)) - return Error(Tok.getLoc(), "malformed memory operand"); - - if (Tok.is(AsmToken::RBrac)) { - E = Tok.getEndLoc(); - Parser.Lex(); // Eat right bracket token. - - Operands.push_back(ARMOperand::CreateMem(BaseRegNum, nullptr, 0, - ARM_AM::no_shift, 0, 0, false, - S, E)); - - // If there's a pre-indexing writeback marker, '!', just add it as a token - // operand. It's rather odd, but syntactically valid. - if (Parser.getTok().is(AsmToken::Exclaim)) { - Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc())); - Parser.Lex(); // Eat the '!'. - } - - return false; - } - - assert((Tok.is(AsmToken::Colon) || Tok.is(AsmToken::Comma)) && - "Lost colon or comma in memory operand?!"); - if (Tok.is(AsmToken::Comma)) { - Parser.Lex(); // Eat the comma. - } - - // If we have a ':', it's an alignment specifier. - if (Parser.getTok().is(AsmToken::Colon)) { - Parser.Lex(); // Eat the ':'. - E = Parser.getTok().getLoc(); - SMLoc AlignmentLoc = Tok.getLoc(); - - const MCExpr *Expr; - if (getParser().parseExpression(Expr)) - return true; - - // The expression has to be a constant. Memory references with relocations - // don't come through here, as they use the <label> forms of the relevant - // instructions. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr); - if (!CE) - return Error (E, "constant expression expected"); - - unsigned Align = 0; - switch (CE->getValue()) { - default: - return Error(E, - "alignment specifier must be 16, 32, 64, 128, or 256 bits"); - case 16: Align = 2; break; - case 32: Align = 4; break; - case 64: Align = 8; break; - case 128: Align = 16; break; - case 256: Align = 32; break; - } - - // Now we should have the closing ']' - if (Parser.getTok().isNot(AsmToken::RBrac)) - return Error(Parser.getTok().getLoc(), "']' expected"); - E = Parser.getTok().getEndLoc(); - Parser.Lex(); // Eat right bracket token. - - // Don't worry about range checking the value here. That's handled by - // the is*() predicates. - Operands.push_back(ARMOperand::CreateMem(BaseRegNum, nullptr, 0, - ARM_AM::no_shift, 0, Align, - false, S, E, AlignmentLoc)); - - // If there's a pre-indexing writeback marker, '!', just add it as a token - // operand. - if (Parser.getTok().is(AsmToken::Exclaim)) { - Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc())); - Parser.Lex(); // Eat the '!'. - } - - return false; - } - - // If we have a '#', it's an immediate offset, else assume it's a register - // offset. Be friendly and also accept a plain integer (without a leading - // hash) for gas compatibility. - if (Parser.getTok().is(AsmToken::Hash) || - Parser.getTok().is(AsmToken::Dollar) || - Parser.getTok().is(AsmToken::Integer)) { - if (Parser.getTok().isNot(AsmToken::Integer)) - Parser.Lex(); // Eat '#' or '$'. - E = Parser.getTok().getLoc(); - - bool isNegative = getParser().getTok().is(AsmToken::Minus); - const MCExpr *Offset; - if (getParser().parseExpression(Offset)) - return true; - - // The expression has to be a constant. Memory references with relocations - // don't come through here, as they use the <label> forms of the relevant - // instructions. - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Offset); - if (!CE) - return Error (E, "constant expression expected"); - - // If the constant was #-0, represent it as - // std::numeric_limits<int32_t>::min(). - int32_t Val = CE->getValue(); - if (isNegative && Val == 0) - CE = MCConstantExpr::create(std::numeric_limits<int32_t>::min(), - getContext()); - - // Now we should have the closing ']' - if (Parser.getTok().isNot(AsmToken::RBrac)) - return Error(Parser.getTok().getLoc(), "']' expected"); - E = Parser.getTok().getEndLoc(); - Parser.Lex(); // Eat right bracket token. - - // Don't worry about range checking the value here. That's handled by - // the is*() predicates. - Operands.push_back(ARMOperand::CreateMem(BaseRegNum, CE, 0, - ARM_AM::no_shift, 0, 0, - false, S, E)); - - // If there's a pre-indexing writeback marker, '!', just add it as a token - // operand. - if (Parser.getTok().is(AsmToken::Exclaim)) { - Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc())); - Parser.Lex(); // Eat the '!'. - } - - return false; - } - - // The register offset is optionally preceded by a '+' or '-' - bool isNegative = false; - if (Parser.getTok().is(AsmToken::Minus)) { - isNegative = true; - Parser.Lex(); // Eat the '-'. - } else if (Parser.getTok().is(AsmToken::Plus)) { - // Nothing to do. - Parser.Lex(); // Eat the '+'. - } - - E = Parser.getTok().getLoc(); - int OffsetRegNum = tryParseRegister(); - if (OffsetRegNum == -1) - return Error(E, "register expected"); - - // If there's a shift operator, handle it. - ARM_AM::ShiftOpc ShiftType = ARM_AM::no_shift; - unsigned ShiftImm = 0; - if (Parser.getTok().is(AsmToken::Comma)) { - Parser.Lex(); // Eat the ','. - if (parseMemRegOffsetShift(ShiftType, ShiftImm)) - return true; - } - - // Now we should have the closing ']' - if (Parser.getTok().isNot(AsmToken::RBrac)) - return Error(Parser.getTok().getLoc(), "']' expected"); - E = Parser.getTok().getEndLoc(); - Parser.Lex(); // Eat right bracket token. - - Operands.push_back(ARMOperand::CreateMem(BaseRegNum, nullptr, OffsetRegNum, - ShiftType, ShiftImm, 0, isNegative, - S, E)); - - // If there's a pre-indexing writeback marker, '!', just add it as a token - // operand. - if (Parser.getTok().is(AsmToken::Exclaim)) { - Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc())); - Parser.Lex(); // Eat the '!'. - } - - return false; -} - -/// parseMemRegOffsetShift - one of these two: -/// ( lsl | lsr | asr | ror ) , # shift_amount -/// rrx -/// return true if it parses a shift otherwise it returns false. -bool ARMAsmParser::parseMemRegOffsetShift(ARM_AM::ShiftOpc &St, - unsigned &Amount) { - MCAsmParser &Parser = getParser(); - SMLoc Loc = Parser.getTok().getLoc(); - const AsmToken &Tok = Parser.getTok(); - if (Tok.isNot(AsmToken::Identifier)) - return Error(Loc, "illegal shift operator"); - StringRef ShiftName = Tok.getString(); - if (ShiftName == "lsl" || ShiftName == "LSL" || - ShiftName == "asl" || ShiftName == "ASL") - St = ARM_AM::lsl; - else if (ShiftName == "lsr" || ShiftName == "LSR") - St = ARM_AM::lsr; - else if (ShiftName == "asr" || ShiftName == "ASR") - St = ARM_AM::asr; - else if (ShiftName == "ror" || ShiftName == "ROR") - St = ARM_AM::ror; - else if (ShiftName == "rrx" || ShiftName == "RRX") - St = ARM_AM::rrx; - else - return Error(Loc, "illegal shift operator"); - Parser.Lex(); // Eat shift type token. - - // rrx stands alone. - Amount = 0; - if (St != ARM_AM::rrx) { - Loc = Parser.getTok().getLoc(); - // A '#' and a shift amount. - const AsmToken &HashTok = Parser.getTok(); - if (HashTok.isNot(AsmToken::Hash) && - HashTok.isNot(AsmToken::Dollar)) - return Error(HashTok.getLoc(), "'#' expected"); - Parser.Lex(); // Eat hash token. - - const MCExpr *Expr; - if (getParser().parseExpression(Expr)) - return true; - // Range check the immediate. - // lsl, ror: 0 <= imm <= 31 - // lsr, asr: 0 <= imm <= 32 - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr); - if (!CE) - return Error(Loc, "shift amount must be an immediate"); - int64_t Imm = CE->getValue(); - if (Imm < 0 || - ((St == ARM_AM::lsl || St == ARM_AM::ror) && Imm > 31) || - ((St == ARM_AM::lsr || St == ARM_AM::asr) && Imm > 32)) - return Error(Loc, "immediate shift value out of range"); - // If <ShiftTy> #0, turn it into a no_shift. - if (Imm == 0) - St = ARM_AM::lsl; - // For consistency, treat lsr #32 and asr #32 as having immediate value 0. - if (Imm == 32) - Imm = 0; - Amount = Imm; - } - - return false; -} - -/// parseFPImm - A floating point immediate expression operand. -OperandMatchResultTy -ARMAsmParser::parseFPImm(OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - // Anything that can accept a floating point constant as an operand - // needs to go through here, as the regular parseExpression is - // integer only. - // - // This routine still creates a generic Immediate operand, containing - // a bitcast of the 64-bit floating point value. The various operands - // that accept floats can check whether the value is valid for them - // via the standard is*() predicates. - - SMLoc S = Parser.getTok().getLoc(); - - if (Parser.getTok().isNot(AsmToken::Hash) && - Parser.getTok().isNot(AsmToken::Dollar)) - return MatchOperand_NoMatch; - - // Disambiguate the VMOV forms that can accept an FP immediate. - // vmov.f32 <sreg>, #imm - // vmov.f64 <dreg>, #imm - // vmov.f32 <dreg>, #imm @ vector f32x2 - // vmov.f32 <qreg>, #imm @ vector f32x4 - // - // There are also the NEON VMOV instructions which expect an - // integer constant. Make sure we don't try to parse an FPImm - // for these: - // vmov.i{8|16|32|64} <dreg|qreg>, #imm - ARMOperand &TyOp = static_cast<ARMOperand &>(*Operands[2]); - bool isVmovf = TyOp.isToken() && - (TyOp.getToken() == ".f32" || TyOp.getToken() == ".f64" || - TyOp.getToken() == ".f16"); - ARMOperand &Mnemonic = static_cast<ARMOperand &>(*Operands[0]); - bool isFconst = Mnemonic.isToken() && (Mnemonic.getToken() == "fconstd" || - Mnemonic.getToken() == "fconsts"); - if (!(isVmovf || isFconst)) - return MatchOperand_NoMatch; - - Parser.Lex(); // Eat '#' or '$'. - - // Handle negation, as that still comes through as a separate token. - bool isNegative = false; - if (Parser.getTok().is(AsmToken::Minus)) { - isNegative = true; - Parser.Lex(); - } - const AsmToken &Tok = Parser.getTok(); - SMLoc Loc = Tok.getLoc(); - if (Tok.is(AsmToken::Real) && isVmovf) { - APFloat RealVal(APFloat::IEEEsingle(), Tok.getString()); - uint64_t IntVal = RealVal.bitcastToAPInt().getZExtValue(); - // If we had a '-' in front, toggle the sign bit. - IntVal ^= (uint64_t)isNegative << 31; - Parser.Lex(); // Eat the token. - Operands.push_back(ARMOperand::CreateImm( - MCConstantExpr::create(IntVal, getContext()), - S, Parser.getTok().getLoc())); - return MatchOperand_Success; - } - // Also handle plain integers. Instructions which allow floating point - // immediates also allow a raw encoded 8-bit value. - if (Tok.is(AsmToken::Integer) && isFconst) { - int64_t Val = Tok.getIntVal(); - Parser.Lex(); // Eat the token. - if (Val > 255 || Val < 0) { - Error(Loc, "encoded floating point value out of range"); - return MatchOperand_ParseFail; - } - float RealVal = ARM_AM::getFPImmFloat(Val); - Val = APFloat(RealVal).bitcastToAPInt().getZExtValue(); - - Operands.push_back(ARMOperand::CreateImm( - MCConstantExpr::create(Val, getContext()), S, - Parser.getTok().getLoc())); - return MatchOperand_Success; - } - - Error(Loc, "invalid floating point immediate"); - return MatchOperand_ParseFail; -} - -/// Parse a arm instruction operand. For now this parses the operand regardless -/// of the mnemonic. -bool ARMAsmParser::parseOperand(OperandVector &Operands, StringRef Mnemonic) { - MCAsmParser &Parser = getParser(); - SMLoc S, E; - - // Check if the current operand has a custom associated parser, if so, try to - // custom parse the operand, or fallback to the general approach. - OperandMatchResultTy ResTy = MatchOperandParserImpl(Operands, Mnemonic); - if (ResTy == MatchOperand_Success) - return false; - // If there wasn't a custom match, try the generic matcher below. Otherwise, - // there was a match, but an error occurred, in which case, just return that - // the operand parsing failed. - if (ResTy == MatchOperand_ParseFail) - return true; - - switch (getLexer().getKind()) { - default: - Error(Parser.getTok().getLoc(), "unexpected token in operand"); - return true; - case AsmToken::Identifier: { - // If we've seen a branch mnemonic, the next operand must be a label. This - // is true even if the label is a register name. So "br r1" means branch to - // label "r1". - bool ExpectLabel = Mnemonic == "b" || Mnemonic == "bl"; - if (!ExpectLabel) { - if (!tryParseRegisterWithWriteBack(Operands)) - return false; - int Res = tryParseShiftRegister(Operands); - if (Res == 0) // success - return false; - else if (Res == -1) // irrecoverable error - return true; - // If this is VMRS, check for the apsr_nzcv operand. - if (Mnemonic == "vmrs" && - Parser.getTok().getString().equals_lower("apsr_nzcv")) { - S = Parser.getTok().getLoc(); - Parser.Lex(); - Operands.push_back(ARMOperand::CreateToken("APSR_nzcv", S)); - return false; - } - } - - // Fall though for the Identifier case that is not a register or a - // special name. - LLVM_FALLTHROUGH; - } - case AsmToken::LParen: // parenthesized expressions like (_strcmp-4) - case AsmToken::Integer: // things like 1f and 2b as a branch targets - case AsmToken::String: // quoted label names. - case AsmToken::Dot: { // . as a branch target - // This was not a register so parse other operands that start with an - // identifier (like labels) as expressions and create them as immediates. - const MCExpr *IdVal; - S = Parser.getTok().getLoc(); - if (getParser().parseExpression(IdVal)) - return true; - E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1); - Operands.push_back(ARMOperand::CreateImm(IdVal, S, E)); - return false; - } - case AsmToken::LBrac: - return parseMemory(Operands); - case AsmToken::LCurly: - return parseRegisterList(Operands); - case AsmToken::Dollar: - case AsmToken::Hash: - // #42 -> immediate. - S = Parser.getTok().getLoc(); - Parser.Lex(); - - if (Parser.getTok().isNot(AsmToken::Colon)) { - bool isNegative = Parser.getTok().is(AsmToken::Minus); - const MCExpr *ImmVal; - if (getParser().parseExpression(ImmVal)) - return true; - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ImmVal); - if (CE) { - int32_t Val = CE->getValue(); - if (isNegative && Val == 0) - ImmVal = MCConstantExpr::create(std::numeric_limits<int32_t>::min(), - getContext()); - } - E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1); - Operands.push_back(ARMOperand::CreateImm(ImmVal, S, E)); - - // There can be a trailing '!' on operands that we want as a separate - // '!' Token operand. Handle that here. For example, the compatibility - // alias for 'srsdb sp!, #imm' is 'srsdb #imm!'. - if (Parser.getTok().is(AsmToken::Exclaim)) { - Operands.push_back(ARMOperand::CreateToken(Parser.getTok().getString(), - Parser.getTok().getLoc())); - Parser.Lex(); // Eat exclaim token - } - return false; - } - // w/ a ':' after the '#', it's just like a plain ':'. - LLVM_FALLTHROUGH; - - case AsmToken::Colon: { - S = Parser.getTok().getLoc(); - // ":lower16:" and ":upper16:" expression prefixes - // FIXME: Check it's an expression prefix, - // e.g. (FOO - :lower16:BAR) isn't legal. - ARMMCExpr::VariantKind RefKind; - if (parsePrefix(RefKind)) - return true; - - const MCExpr *SubExprVal; - if (getParser().parseExpression(SubExprVal)) - return true; - - const MCExpr *ExprVal = ARMMCExpr::create(RefKind, SubExprVal, - getContext()); - E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1); - Operands.push_back(ARMOperand::CreateImm(ExprVal, S, E)); - return false; - } - case AsmToken::Equal: { - S = Parser.getTok().getLoc(); - if (Mnemonic != "ldr") // only parse for ldr pseudo (e.g. ldr r0, =val) - return Error(S, "unexpected token in operand"); - Parser.Lex(); // Eat '=' - const MCExpr *SubExprVal; - if (getParser().parseExpression(SubExprVal)) - return true; - E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1); - - // execute-only: we assume that assembly programmers know what they are - // doing and allow literal pool creation here - Operands.push_back(ARMOperand::CreateConstantPoolImm(SubExprVal, S, E)); - return false; - } - } -} - -// parsePrefix - Parse ARM 16-bit relocations expression prefix, i.e. -// :lower16: and :upper16:. -bool ARMAsmParser::parsePrefix(ARMMCExpr::VariantKind &RefKind) { - MCAsmParser &Parser = getParser(); - RefKind = ARMMCExpr::VK_ARM_None; - - // consume an optional '#' (GNU compatibility) - if (getLexer().is(AsmToken::Hash)) - Parser.Lex(); - - // :lower16: and :upper16: modifiers - assert(getLexer().is(AsmToken::Colon) && "expected a :"); - Parser.Lex(); // Eat ':' - - if (getLexer().isNot(AsmToken::Identifier)) { - Error(Parser.getTok().getLoc(), "expected prefix identifier in operand"); - return true; - } - - enum { - COFF = (1 << MCObjectFileInfo::IsCOFF), - ELF = (1 << MCObjectFileInfo::IsELF), - MACHO = (1 << MCObjectFileInfo::IsMachO), - WASM = (1 << MCObjectFileInfo::IsWasm), - }; - static const struct PrefixEntry { - const char *Spelling; - ARMMCExpr::VariantKind VariantKind; - uint8_t SupportedFormats; - } PrefixEntries[] = { - { "lower16", ARMMCExpr::VK_ARM_LO16, COFF | ELF | MACHO }, - { "upper16", ARMMCExpr::VK_ARM_HI16, COFF | ELF | MACHO }, - }; - - StringRef IDVal = Parser.getTok().getIdentifier(); - - const auto &Prefix = - std::find_if(std::begin(PrefixEntries), std::end(PrefixEntries), - [&IDVal](const PrefixEntry &PE) { - return PE.Spelling == IDVal; - }); - if (Prefix == std::end(PrefixEntries)) { - Error(Parser.getTok().getLoc(), "unexpected prefix in operand"); - return true; - } - - uint8_t CurrentFormat; - switch (getContext().getObjectFileInfo()->getObjectFileType()) { - case MCObjectFileInfo::IsMachO: - CurrentFormat = MACHO; - break; - case MCObjectFileInfo::IsELF: - CurrentFormat = ELF; - break; - case MCObjectFileInfo::IsCOFF: - CurrentFormat = COFF; - break; - case MCObjectFileInfo::IsWasm: - CurrentFormat = WASM; - break; - } - - if (~Prefix->SupportedFormats & CurrentFormat) { - Error(Parser.getTok().getLoc(), - "cannot represent relocation in the current file format"); - return true; - } - - RefKind = Prefix->VariantKind; - Parser.Lex(); - - if (getLexer().isNot(AsmToken::Colon)) { - Error(Parser.getTok().getLoc(), "unexpected token after prefix"); - return true; - } - Parser.Lex(); // Eat the last ':' - - return false; -} - -/// Given a mnemonic, split out possible predication code and carry -/// setting letters to form a canonical mnemonic and flags. -// -// FIXME: Would be nice to autogen this. -// FIXME: This is a bit of a maze of special cases. -StringRef ARMAsmParser::splitMnemonic(StringRef Mnemonic, - unsigned &PredicationCode, - bool &CarrySetting, - unsigned &ProcessorIMod, - StringRef &ITMask) { - PredicationCode = ARMCC::AL; - CarrySetting = false; - ProcessorIMod = 0; - - // Ignore some mnemonics we know aren't predicated forms. - // - // FIXME: Would be nice to autogen this. - if ((Mnemonic == "movs" && isThumb()) || - Mnemonic == "teq" || Mnemonic == "vceq" || Mnemonic == "svc" || - Mnemonic == "mls" || Mnemonic == "smmls" || Mnemonic == "vcls" || - Mnemonic == "vmls" || Mnemonic == "vnmls" || Mnemonic == "vacge" || - Mnemonic == "vcge" || Mnemonic == "vclt" || Mnemonic == "vacgt" || - Mnemonic == "vaclt" || Mnemonic == "vacle" || Mnemonic == "hlt" || - Mnemonic == "vcgt" || Mnemonic == "vcle" || Mnemonic == "smlal" || - Mnemonic == "umaal" || Mnemonic == "umlal" || Mnemonic == "vabal" || - Mnemonic == "vmlal" || Mnemonic == "vpadal" || Mnemonic == "vqdmlal" || - Mnemonic == "fmuls" || Mnemonic == "vmaxnm" || Mnemonic == "vminnm" || - Mnemonic == "vcvta" || Mnemonic == "vcvtn" || Mnemonic == "vcvtp" || - Mnemonic == "vcvtm" || Mnemonic == "vrinta" || Mnemonic == "vrintn" || - Mnemonic == "vrintp" || Mnemonic == "vrintm" || Mnemonic == "hvc" || - Mnemonic.startswith("vsel") || Mnemonic == "vins" || Mnemonic == "vmovx" || - Mnemonic == "bxns" || Mnemonic == "blxns" || - Mnemonic == "vudot" || Mnemonic == "vsdot" || - Mnemonic == "vcmla" || Mnemonic == "vcadd" || - Mnemonic == "vfmal" || Mnemonic == "vfmsl") - return Mnemonic; - - // First, split out any predication code. Ignore mnemonics we know aren't - // predicated but do have a carry-set and so weren't caught above. - if (Mnemonic != "adcs" && Mnemonic != "bics" && Mnemonic != "movs" && - Mnemonic != "muls" && Mnemonic != "smlals" && Mnemonic != "smulls" && - Mnemonic != "umlals" && Mnemonic != "umulls" && Mnemonic != "lsls" && - Mnemonic != "sbcs" && Mnemonic != "rscs") { - unsigned CC = ARMCondCodeFromString(Mnemonic.substr(Mnemonic.size()-2)); - if (CC != ~0U) { - Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 2); - PredicationCode = CC; - } - } - - // Next, determine if we have a carry setting bit. We explicitly ignore all - // the instructions we know end in 's'. - if (Mnemonic.endswith("s") && - !(Mnemonic == "cps" || Mnemonic == "mls" || - Mnemonic == "mrs" || Mnemonic == "smmls" || Mnemonic == "vabs" || - Mnemonic == "vcls" || Mnemonic == "vmls" || Mnemonic == "vmrs" || - Mnemonic == "vnmls" || Mnemonic == "vqabs" || Mnemonic == "vrecps" || - Mnemonic == "vrsqrts" || Mnemonic == "srs" || Mnemonic == "flds" || - Mnemonic == "fmrs" || Mnemonic == "fsqrts" || Mnemonic == "fsubs" || - Mnemonic == "fsts" || Mnemonic == "fcpys" || Mnemonic == "fdivs" || - Mnemonic == "fmuls" || Mnemonic == "fcmps" || Mnemonic == "fcmpzs" || - Mnemonic == "vfms" || Mnemonic == "vfnms" || Mnemonic == "fconsts" || - Mnemonic == "bxns" || Mnemonic == "blxns" || - (Mnemonic == "movs" && isThumb()))) { - Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 1); - CarrySetting = true; - } - - // The "cps" instruction can have a interrupt mode operand which is glued into - // the mnemonic. Check if this is the case, split it and parse the imod op - if (Mnemonic.startswith("cps")) { - // Split out any imod code. - unsigned IMod = - StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2, 2)) - .Case("ie", ARM_PROC::IE) - .Case("id", ARM_PROC::ID) - .Default(~0U); - if (IMod != ~0U) { - Mnemonic = Mnemonic.slice(0, Mnemonic.size()-2); - ProcessorIMod = IMod; - } - } - - // The "it" instruction has the condition mask on the end of the mnemonic. - if (Mnemonic.startswith("it")) { - ITMask = Mnemonic.slice(2, Mnemonic.size()); - Mnemonic = Mnemonic.slice(0, 2); - } - - return Mnemonic; -} - -/// Given a canonical mnemonic, determine if the instruction ever allows -/// inclusion of carry set or predication code operands. -// -// FIXME: It would be nice to autogen this. -void ARMAsmParser::getMnemonicAcceptInfo(StringRef Mnemonic, StringRef FullInst, - bool &CanAcceptCarrySet, - bool &CanAcceptPredicationCode) { - CanAcceptCarrySet = - Mnemonic == "and" || Mnemonic == "lsl" || Mnemonic == "lsr" || - Mnemonic == "rrx" || Mnemonic == "ror" || Mnemonic == "sub" || - Mnemonic == "add" || Mnemonic == "adc" || Mnemonic == "mul" || - Mnemonic == "bic" || Mnemonic == "asr" || Mnemonic == "orr" || - Mnemonic == "mvn" || Mnemonic == "rsb" || Mnemonic == "rsc" || - Mnemonic == "orn" || Mnemonic == "sbc" || Mnemonic == "eor" || - Mnemonic == "neg" || Mnemonic == "vfm" || Mnemonic == "vfnm" || - (!isThumb() && - (Mnemonic == "smull" || Mnemonic == "mov" || Mnemonic == "mla" || - Mnemonic == "smlal" || Mnemonic == "umlal" || Mnemonic == "umull")); - - if (Mnemonic == "bkpt" || Mnemonic == "cbnz" || Mnemonic == "setend" || - Mnemonic == "cps" || Mnemonic == "it" || Mnemonic == "cbz" || - Mnemonic == "trap" || Mnemonic == "hlt" || Mnemonic == "udf" || - Mnemonic.startswith("crc32") || Mnemonic.startswith("cps") || - Mnemonic.startswith("vsel") || Mnemonic == "vmaxnm" || - Mnemonic == "vminnm" || Mnemonic == "vcvta" || Mnemonic == "vcvtn" || - Mnemonic == "vcvtp" || Mnemonic == "vcvtm" || Mnemonic == "vrinta" || - Mnemonic == "vrintn" || Mnemonic == "vrintp" || Mnemonic == "vrintm" || - Mnemonic.startswith("aes") || Mnemonic == "hvc" || Mnemonic == "setpan" || - Mnemonic.startswith("sha1") || Mnemonic.startswith("sha256") || - (FullInst.startswith("vmull") && FullInst.endswith(".p64")) || - Mnemonic == "vmovx" || Mnemonic == "vins" || - Mnemonic == "vudot" || Mnemonic == "vsdot" || - Mnemonic == "vcmla" || Mnemonic == "vcadd" || - Mnemonic == "vfmal" || Mnemonic == "vfmsl" || - Mnemonic == "sb" || Mnemonic == "ssbb" || - Mnemonic == "pssbb") { - // These mnemonics are never predicable - CanAcceptPredicationCode = false; - } else if (!isThumb()) { - // Some instructions are only predicable in Thumb mode - CanAcceptPredicationCode = - Mnemonic != "cdp2" && Mnemonic != "clrex" && Mnemonic != "mcr2" && - Mnemonic != "mcrr2" && Mnemonic != "mrc2" && Mnemonic != "mrrc2" && - Mnemonic != "dmb" && Mnemonic != "dfb" && Mnemonic != "dsb" && - Mnemonic != "isb" && Mnemonic != "pld" && Mnemonic != "pli" && - Mnemonic != "pldw" && Mnemonic != "ldc2" && Mnemonic != "ldc2l" && - Mnemonic != "stc2" && Mnemonic != "stc2l" && - Mnemonic != "tsb" && - !Mnemonic.startswith("rfe") && !Mnemonic.startswith("srs"); - } else if (isThumbOne()) { - if (hasV6MOps()) - CanAcceptPredicationCode = Mnemonic != "movs"; - else - CanAcceptPredicationCode = Mnemonic != "nop" && Mnemonic != "movs"; - } else - CanAcceptPredicationCode = true; -} - -// Some Thumb instructions have two operand forms that are not -// available as three operand, convert to two operand form if possible. -// -// FIXME: We would really like to be able to tablegen'erate this. -void ARMAsmParser::tryConvertingToTwoOperandForm(StringRef Mnemonic, - bool CarrySetting, - OperandVector &Operands) { - if (Operands.size() != 6) - return; - - const auto &Op3 = static_cast<ARMOperand &>(*Operands[3]); - auto &Op4 = static_cast<ARMOperand &>(*Operands[4]); - if (!Op3.isReg() || !Op4.isReg()) - return; - - auto Op3Reg = Op3.getReg(); - auto Op4Reg = Op4.getReg(); - - // For most Thumb2 cases we just generate the 3 operand form and reduce - // it in processInstruction(), but the 3 operand form of ADD (t2ADDrr) - // won't accept SP or PC so we do the transformation here taking care - // with immediate range in the 'add sp, sp #imm' case. - auto &Op5 = static_cast<ARMOperand &>(*Operands[5]); - if (isThumbTwo()) { - if (Mnemonic != "add") - return; - bool TryTransform = Op3Reg == ARM::PC || Op4Reg == ARM::PC || - (Op5.isReg() && Op5.getReg() == ARM::PC); - if (!TryTransform) { - TryTransform = (Op3Reg == ARM::SP || Op4Reg == ARM::SP || - (Op5.isReg() && Op5.getReg() == ARM::SP)) && - !(Op3Reg == ARM::SP && Op4Reg == ARM::SP && - Op5.isImm() && !Op5.isImm0_508s4()); - } - if (!TryTransform) - return; - } else if (!isThumbOne()) - return; - - if (!(Mnemonic == "add" || Mnemonic == "sub" || Mnemonic == "and" || - Mnemonic == "eor" || Mnemonic == "lsl" || Mnemonic == "lsr" || - Mnemonic == "asr" || Mnemonic == "adc" || Mnemonic == "sbc" || - Mnemonic == "ror" || Mnemonic == "orr" || Mnemonic == "bic")) - return; - - // If first 2 operands of a 3 operand instruction are the same - // then transform to 2 operand version of the same instruction - // e.g. 'adds r0, r0, #1' transforms to 'adds r0, #1' - bool Transform = Op3Reg == Op4Reg; - - // For communtative operations, we might be able to transform if we swap - // Op4 and Op5. The 'ADD Rdm, SP, Rdm' form is already handled specially - // as tADDrsp. - const ARMOperand *LastOp = &Op5; - bool Swap = false; - if (!Transform && Op5.isReg() && Op3Reg == Op5.getReg() && - ((Mnemonic == "add" && Op4Reg != ARM::SP) || - Mnemonic == "and" || Mnemonic == "eor" || - Mnemonic == "adc" || Mnemonic == "orr")) { - Swap = true; - LastOp = &Op4; - Transform = true; - } - - // If both registers are the same then remove one of them from - // the operand list, with certain exceptions. - if (Transform) { - // Don't transform 'adds Rd, Rd, Rm' or 'sub{s} Rd, Rd, Rm' because the - // 2 operand forms don't exist. - if (((Mnemonic == "add" && CarrySetting) || Mnemonic == "sub") && - LastOp->isReg()) - Transform = false; - - // Don't transform 'add/sub{s} Rd, Rd, #imm' if the immediate fits into - // 3-bits because the ARMARM says not to. - if ((Mnemonic == "add" || Mnemonic == "sub") && LastOp->isImm0_7()) - Transform = false; - } - - if (Transform) { - if (Swap) - std::swap(Op4, Op5); - Operands.erase(Operands.begin() + 3); - } -} - -bool ARMAsmParser::shouldOmitCCOutOperand(StringRef Mnemonic, - OperandVector &Operands) { - // FIXME: This is all horribly hacky. We really need a better way to deal - // with optional operands like this in the matcher table. - - // The 'mov' mnemonic is special. One variant has a cc_out operand, while - // another does not. Specifically, the MOVW instruction does not. So we - // special case it here and remove the defaulted (non-setting) cc_out - // operand if that's the instruction we're trying to match. - // - // We do this as post-processing of the explicit operands rather than just - // conditionally adding the cc_out in the first place because we need - // to check the type of the parsed immediate operand. - if (Mnemonic == "mov" && Operands.size() > 4 && !isThumb() && - !static_cast<ARMOperand &>(*Operands[4]).isModImm() && - static_cast<ARMOperand &>(*Operands[4]).isImm0_65535Expr() && - static_cast<ARMOperand &>(*Operands[1]).getReg() == 0) - return true; - - // Register-register 'add' for thumb does not have a cc_out operand - // when there are only two register operands. - if (isThumb() && Mnemonic == "add" && Operands.size() == 5 && - static_cast<ARMOperand &>(*Operands[3]).isReg() && - static_cast<ARMOperand &>(*Operands[4]).isReg() && - static_cast<ARMOperand &>(*Operands[1]).getReg() == 0) - return true; - // Register-register 'add' for thumb does not have a cc_out operand - // when it's an ADD Rdm, SP, {Rdm|#imm0_255} instruction. We do - // have to check the immediate range here since Thumb2 has a variant - // that can handle a different range and has a cc_out operand. - if (((isThumb() && Mnemonic == "add") || - (isThumbTwo() && Mnemonic == "sub")) && - Operands.size() == 6 && static_cast<ARMOperand &>(*Operands[3]).isReg() && - static_cast<ARMOperand &>(*Operands[4]).isReg() && - static_cast<ARMOperand &>(*Operands[4]).getReg() == ARM::SP && - static_cast<ARMOperand &>(*Operands[1]).getReg() == 0 && - ((Mnemonic == "add" && static_cast<ARMOperand &>(*Operands[5]).isReg()) || - static_cast<ARMOperand &>(*Operands[5]).isImm0_1020s4())) - return true; - // For Thumb2, add/sub immediate does not have a cc_out operand for the - // imm0_4095 variant. That's the least-preferred variant when - // selecting via the generic "add" mnemonic, so to know that we - // should remove the cc_out operand, we have to explicitly check that - // it's not one of the other variants. Ugh. - if (isThumbTwo() && (Mnemonic == "add" || Mnemonic == "sub") && - Operands.size() == 6 && static_cast<ARMOperand &>(*Operands[3]).isReg() && - static_cast<ARMOperand &>(*Operands[4]).isReg() && - static_cast<ARMOperand &>(*Operands[5]).isImm()) { - // Nest conditions rather than one big 'if' statement for readability. - // - // If both registers are low, we're in an IT block, and the immediate is - // in range, we should use encoding T1 instead, which has a cc_out. - if (inITBlock() && - isARMLowRegister(static_cast<ARMOperand &>(*Operands[3]).getReg()) && - isARMLowRegister(static_cast<ARMOperand &>(*Operands[4]).getReg()) && - static_cast<ARMOperand &>(*Operands[5]).isImm0_7()) - return false; - // Check against T3. If the second register is the PC, this is an - // alternate form of ADR, which uses encoding T4, so check for that too. - if (static_cast<ARMOperand &>(*Operands[4]).getReg() != ARM::PC && - static_cast<ARMOperand &>(*Operands[5]).isT2SOImm()) - return false; - - // Otherwise, we use encoding T4, which does not have a cc_out - // operand. - return true; - } - - // The thumb2 multiply instruction doesn't have a CCOut register, so - // if we have a "mul" mnemonic in Thumb mode, check if we'll be able to - // use the 16-bit encoding or not. - if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 6 && - static_cast<ARMOperand &>(*Operands[1]).getReg() == 0 && - static_cast<ARMOperand &>(*Operands[3]).isReg() && - static_cast<ARMOperand &>(*Operands[4]).isReg() && - static_cast<ARMOperand &>(*Operands[5]).isReg() && - // If the registers aren't low regs, the destination reg isn't the - // same as one of the source regs, or the cc_out operand is zero - // outside of an IT block, we have to use the 32-bit encoding, so - // remove the cc_out operand. - (!isARMLowRegister(static_cast<ARMOperand &>(*Operands[3]).getReg()) || - !isARMLowRegister(static_cast<ARMOperand &>(*Operands[4]).getReg()) || - !isARMLowRegister(static_cast<ARMOperand &>(*Operands[5]).getReg()) || - !inITBlock() || (static_cast<ARMOperand &>(*Operands[3]).getReg() != - static_cast<ARMOperand &>(*Operands[5]).getReg() && - static_cast<ARMOperand &>(*Operands[3]).getReg() != - static_cast<ARMOperand &>(*Operands[4]).getReg()))) - return true; - - // Also check the 'mul' syntax variant that doesn't specify an explicit - // destination register. - if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 5 && - static_cast<ARMOperand &>(*Operands[1]).getReg() == 0 && - static_cast<ARMOperand &>(*Operands[3]).isReg() && - static_cast<ARMOperand &>(*Operands[4]).isReg() && - // If the registers aren't low regs or the cc_out operand is zero - // outside of an IT block, we have to use the 32-bit encoding, so - // remove the cc_out operand. - (!isARMLowRegister(static_cast<ARMOperand &>(*Operands[3]).getReg()) || - !isARMLowRegister(static_cast<ARMOperand &>(*Operands[4]).getReg()) || - !inITBlock())) - return true; - - // Register-register 'add/sub' for thumb does not have a cc_out operand - // when it's an ADD/SUB SP, #imm. Be lenient on count since there's also - // the "add/sub SP, SP, #imm" version. If the follow-up operands aren't - // right, this will result in better diagnostics (which operand is off) - // anyway. - if (isThumb() && (Mnemonic == "add" || Mnemonic == "sub") && - (Operands.size() == 5 || Operands.size() == 6) && - static_cast<ARMOperand &>(*Operands[3]).isReg() && - static_cast<ARMOperand &>(*Operands[3]).getReg() == ARM::SP && - static_cast<ARMOperand &>(*Operands[1]).getReg() == 0 && - (static_cast<ARMOperand &>(*Operands[4]).isImm() || - (Operands.size() == 6 && - static_cast<ARMOperand &>(*Operands[5]).isImm()))) - return true; - - return false; -} - -bool ARMAsmParser::shouldOmitPredicateOperand(StringRef Mnemonic, - OperandVector &Operands) { - // VRINT{Z, X} have a predicate operand in VFP, but not in NEON - unsigned RegIdx = 3; - if ((Mnemonic == "vrintz" || Mnemonic == "vrintx") && - (static_cast<ARMOperand &>(*Operands[2]).getToken() == ".f32" || - static_cast<ARMOperand &>(*Operands[2]).getToken() == ".f16")) { - if (static_cast<ARMOperand &>(*Operands[3]).isToken() && - (static_cast<ARMOperand &>(*Operands[3]).getToken() == ".f32" || - static_cast<ARMOperand &>(*Operands[3]).getToken() == ".f16")) - RegIdx = 4; - - if (static_cast<ARMOperand &>(*Operands[RegIdx]).isReg() && - (ARMMCRegisterClasses[ARM::DPRRegClassID].contains( - static_cast<ARMOperand &>(*Operands[RegIdx]).getReg()) || - ARMMCRegisterClasses[ARM::QPRRegClassID].contains( - static_cast<ARMOperand &>(*Operands[RegIdx]).getReg()))) - return true; - } - return false; -} - -static bool isDataTypeToken(StringRef Tok) { - return Tok == ".8" || Tok == ".16" || Tok == ".32" || Tok == ".64" || - Tok == ".i8" || Tok == ".i16" || Tok == ".i32" || Tok == ".i64" || - Tok == ".u8" || Tok == ".u16" || Tok == ".u32" || Tok == ".u64" || - Tok == ".s8" || Tok == ".s16" || Tok == ".s32" || Tok == ".s64" || - Tok == ".p8" || Tok == ".p16" || Tok == ".f32" || Tok == ".f64" || - Tok == ".f" || Tok == ".d"; -} - -// FIXME: This bit should probably be handled via an explicit match class -// in the .td files that matches the suffix instead of having it be -// a literal string token the way it is now. -static bool doesIgnoreDataTypeSuffix(StringRef Mnemonic, StringRef DT) { - return Mnemonic.startswith("vldm") || Mnemonic.startswith("vstm"); -} - -static void applyMnemonicAliases(StringRef &Mnemonic, uint64_t Features, - unsigned VariantID); - -// The GNU assembler has aliases of ldrd and strd with the second register -// omitted. We don't have a way to do that in tablegen, so fix it up here. -// -// We have to be careful to not emit an invalid Rt2 here, because the rest of -// the assmebly parser could then generate confusing diagnostics refering to -// it. If we do find anything that prevents us from doing the transformation we -// bail out, and let the assembly parser report an error on the instruction as -// it is written. -void ARMAsmParser::fixupGNULDRDAlias(StringRef Mnemonic, - OperandVector &Operands) { - if (Mnemonic != "ldrd" && Mnemonic != "strd") - return; - if (Operands.size() < 4) - return; - - ARMOperand &Op2 = static_cast<ARMOperand &>(*Operands[2]); - ARMOperand &Op3 = static_cast<ARMOperand &>(*Operands[3]); - - if (!Op2.isReg()) - return; - if (!Op3.isMem()) - return; - - const MCRegisterClass &GPR = MRI->getRegClass(ARM::GPRRegClassID); - if (!GPR.contains(Op2.getReg())) - return; - - unsigned RtEncoding = MRI->getEncodingValue(Op2.getReg()); - if (!isThumb() && (RtEncoding & 1)) { - // In ARM mode, the registers must be from an aligned pair, this - // restriction does not apply in Thumb mode. - return; - } - if (Op2.getReg() == ARM::PC) - return; - unsigned PairedReg = GPR.getRegister(RtEncoding + 1); - if (!PairedReg || PairedReg == ARM::PC || - (PairedReg == ARM::SP && !hasV8Ops())) - return; - - Operands.insert( - Operands.begin() + 3, - ARMOperand::CreateReg(PairedReg, Op2.getStartLoc(), Op2.getEndLoc())); -} - -/// Parse an arm instruction mnemonic followed by its operands. -bool ARMAsmParser::ParseInstruction(ParseInstructionInfo &Info, StringRef Name, - SMLoc NameLoc, OperandVector &Operands) { - MCAsmParser &Parser = getParser(); - - // Apply mnemonic aliases before doing anything else, as the destination - // mnemonic may include suffices and we want to handle them normally. - // The generic tblgen'erated code does this later, at the start of - // MatchInstructionImpl(), but that's too late for aliases that include - // any sort of suffix. - uint64_t AvailableFeatures = getAvailableFeatures(); - unsigned AssemblerDialect = getParser().getAssemblerDialect(); - applyMnemonicAliases(Name, AvailableFeatures, AssemblerDialect); - - // First check for the ARM-specific .req directive. - if (Parser.getTok().is(AsmToken::Identifier) && - Parser.getTok().getIdentifier() == ".req") { - parseDirectiveReq(Name, NameLoc); - // We always return 'error' for this, as we're done with this - // statement and don't need to match the 'instruction." - return true; - } - - // Create the leading tokens for the mnemonic, split by '.' characters. - size_t Start = 0, Next = Name.find('.'); - StringRef Mnemonic = Name.slice(Start, Next); - - // Split out the predication code and carry setting flag from the mnemonic. - unsigned PredicationCode; - unsigned ProcessorIMod; - bool CarrySetting; - StringRef ITMask; - Mnemonic = splitMnemonic(Mnemonic, PredicationCode, CarrySetting, - ProcessorIMod, ITMask); - - // In Thumb1, only the branch (B) instruction can be predicated. - if (isThumbOne() && PredicationCode != ARMCC::AL && Mnemonic != "b") { - return Error(NameLoc, "conditional execution not supported in Thumb1"); - } - - Operands.push_back(ARMOperand::CreateToken(Mnemonic, NameLoc)); - - // Handle the IT instruction ITMask. Convert it to a bitmask. This - // is the mask as it will be for the IT encoding if the conditional - // encoding has a '1' as it's bit0 (i.e. 't' ==> '1'). In the case - // where the conditional bit0 is zero, the instruction post-processing - // will adjust the mask accordingly. - if (Mnemonic == "it") { - SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + 2); - if (ITMask.size() > 3) { - return Error(Loc, "too many conditions on IT instruction"); - } - unsigned Mask = 8; - for (unsigned i = ITMask.size(); i != 0; --i) { - char pos = ITMask[i - 1]; - if (pos != 't' && pos != 'e') { - return Error(Loc, "illegal IT block condition mask '" + ITMask + "'"); - } - Mask >>= 1; - if (ITMask[i - 1] == 't') - Mask |= 8; - } - Operands.push_back(ARMOperand::CreateITMask(Mask, Loc)); - } - - // FIXME: This is all a pretty gross hack. We should automatically handle - // optional operands like this via tblgen. - - // Next, add the CCOut and ConditionCode operands, if needed. - // - // For mnemonics which can ever incorporate a carry setting bit or predication - // code, our matching model involves us always generating CCOut and - // ConditionCode operands to match the mnemonic "as written" and then we let - // the matcher deal with finding the right instruction or generating an - // appropriate error. - bool CanAcceptCarrySet, CanAcceptPredicationCode; - getMnemonicAcceptInfo(Mnemonic, Name, CanAcceptCarrySet, CanAcceptPredicationCode); - - // If we had a carry-set on an instruction that can't do that, issue an - // error. - if (!CanAcceptCarrySet && CarrySetting) { - return Error(NameLoc, "instruction '" + Mnemonic + - "' can not set flags, but 's' suffix specified"); - } - // If we had a predication code on an instruction that can't do that, issue an - // error. - if (!CanAcceptPredicationCode && PredicationCode != ARMCC::AL) { - return Error(NameLoc, "instruction '" + Mnemonic + - "' is not predicable, but condition code specified"); - } - - // Add the carry setting operand, if necessary. - if (CanAcceptCarrySet) { - SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size()); - Operands.push_back(ARMOperand::CreateCCOut(CarrySetting ? ARM::CPSR : 0, - Loc)); - } - - // Add the predication code operand, if necessary. - if (CanAcceptPredicationCode) { - SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size() + - CarrySetting); - Operands.push_back(ARMOperand::CreateCondCode( - ARMCC::CondCodes(PredicationCode), Loc)); - } - - // Add the processor imod operand, if necessary. - if (ProcessorIMod) { - Operands.push_back(ARMOperand::CreateImm( - MCConstantExpr::create(ProcessorIMod, getContext()), - NameLoc, NameLoc)); - } else if (Mnemonic == "cps" && isMClass()) { - return Error(NameLoc, "instruction 'cps' requires effect for M-class"); - } - - // Add the remaining tokens in the mnemonic. - while (Next != StringRef::npos) { - Start = Next; - Next = Name.find('.', Start + 1); - StringRef ExtraToken = Name.slice(Start, Next); - - // Some NEON instructions have an optional datatype suffix that is - // completely ignored. Check for that. - if (isDataTypeToken(ExtraToken) && - doesIgnoreDataTypeSuffix(Mnemonic, ExtraToken)) - continue; - - // For for ARM mode generate an error if the .n qualifier is used. - if (ExtraToken == ".n" && !isThumb()) { - SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Start); - return Error(Loc, "instruction with .n (narrow) qualifier not allowed in " - "arm mode"); - } - - // The .n qualifier is always discarded as that is what the tables - // and matcher expect. In ARM mode the .w qualifier has no effect, - // so discard it to avoid errors that can be caused by the matcher. - if (ExtraToken != ".n" && (isThumb() || ExtraToken != ".w")) { - SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Start); - Operands.push_back(ARMOperand::CreateToken(ExtraToken, Loc)); - } - } - - // Read the remaining operands. - if (getLexer().isNot(AsmToken::EndOfStatement)) { - // Read the first operand. - if (parseOperand(Operands, Mnemonic)) { - return true; - } - - while (parseOptionalToken(AsmToken::Comma)) { - // Parse and remember the operand. - if (parseOperand(Operands, Mnemonic)) { - return true; - } - } - } - - if (parseToken(AsmToken::EndOfStatement, "unexpected token in argument list")) - return true; - - tryConvertingToTwoOperandForm(Mnemonic, CarrySetting, Operands); - - // Some instructions, mostly Thumb, have forms for the same mnemonic that - // do and don't have a cc_out optional-def operand. With some spot-checks - // of the operand list, we can figure out which variant we're trying to - // parse and adjust accordingly before actually matching. We shouldn't ever - // try to remove a cc_out operand that was explicitly set on the - // mnemonic, of course (CarrySetting == true). Reason number #317 the - // table driven matcher doesn't fit well with the ARM instruction set. - if (!CarrySetting && shouldOmitCCOutOperand(Mnemonic, Operands)) - Operands.erase(Operands.begin() + 1); - - // Some instructions have the same mnemonic, but don't always - // have a predicate. Distinguish them here and delete the - // predicate if needed. - if (PredicationCode == ARMCC::AL && - shouldOmitPredicateOperand(Mnemonic, Operands)) - Operands.erase(Operands.begin() + 1); - - // ARM mode 'blx' need special handling, as the register operand version - // is predicable, but the label operand version is not. So, we can't rely - // on the Mnemonic based checking to correctly figure out when to put - // a k_CondCode operand in the list. If we're trying to match the label - // version, remove the k_CondCode operand here. - if (!isThumb() && Mnemonic == "blx" && Operands.size() == 3 && - static_cast<ARMOperand &>(*Operands[2]).isImm()) - Operands.erase(Operands.begin() + 1); - - // Adjust operands of ldrexd/strexd to MCK_GPRPair. - // ldrexd/strexd require even/odd GPR pair. To enforce this constraint, - // a single GPRPair reg operand is used in the .td file to replace the two - // GPRs. However, when parsing from asm, the two GRPs cannot be automatically - // expressed as a GPRPair, so we have to manually merge them. - // FIXME: We would really like to be able to tablegen'erate this. - if (!isThumb() && Operands.size() > 4 && - (Mnemonic == "ldrexd" || Mnemonic == "strexd" || Mnemonic == "ldaexd" || - Mnemonic == "stlexd")) { - bool isLoad = (Mnemonic == "ldrexd" || Mnemonic == "ldaexd"); - unsigned Idx = isLoad ? 2 : 3; - ARMOperand &Op1 = static_cast<ARMOperand &>(*Operands[Idx]); - ARMOperand &Op2 = static_cast<ARMOperand &>(*Operands[Idx + 1]); - - const MCRegisterClass& MRC = MRI->getRegClass(ARM::GPRRegClassID); - // Adjust only if Op1 and Op2 are GPRs. - if (Op1.isReg() && Op2.isReg() && MRC.contains(Op1.getReg()) && - MRC.contains(Op2.getReg())) { - unsigned Reg1 = Op1.getReg(); - unsigned Reg2 = Op2.getReg(); - unsigned Rt = MRI->getEncodingValue(Reg1); - unsigned Rt2 = MRI->getEncodingValue(Reg2); - - // Rt2 must be Rt + 1 and Rt must be even. - if (Rt + 1 != Rt2 || (Rt & 1)) { - return Error(Op2.getStartLoc(), - isLoad ? "destination operands must be sequential" - : "source operands must be sequential"); - } - unsigned NewReg = MRI->getMatchingSuperReg(Reg1, ARM::gsub_0, - &(MRI->getRegClass(ARM::GPRPairRegClassID))); - Operands[Idx] = - ARMOperand::CreateReg(NewReg, Op1.getStartLoc(), Op2.getEndLoc()); - Operands.erase(Operands.begin() + Idx + 1); - } - } - - // GNU Assembler extension (compatibility). - fixupGNULDRDAlias(Mnemonic, Operands); - - // FIXME: As said above, this is all a pretty gross hack. This instruction - // does not fit with other "subs" and tblgen. - // Adjust operands of B9.3.19 SUBS PC, LR, #imm (Thumb2) system instruction - // so the Mnemonic is the original name "subs" and delete the predicate - // operand so it will match the table entry. - if (isThumbTwo() && Mnemonic == "sub" && Operands.size() == 6 && - static_cast<ARMOperand &>(*Operands[3]).isReg() && - static_cast<ARMOperand &>(*Operands[3]).getReg() == ARM::PC && - static_cast<ARMOperand &>(*Operands[4]).isReg() && - static_cast<ARMOperand &>(*Operands[4]).getReg() == ARM::LR && - static_cast<ARMOperand &>(*Operands[5]).isImm()) { - Operands.front() = ARMOperand::CreateToken(Name, NameLoc); - Operands.erase(Operands.begin() + 1); - } - return false; -} - -// Validate context-sensitive operand constraints. - -// return 'true' if register list contains non-low GPR registers, -// 'false' otherwise. If Reg is in the register list or is HiReg, set -// 'containsReg' to true. -static bool checkLowRegisterList(const MCInst &Inst, unsigned OpNo, - unsigned Reg, unsigned HiReg, - bool &containsReg) { - containsReg = false; - for (unsigned i = OpNo; i < Inst.getNumOperands(); ++i) { - unsigned OpReg = Inst.getOperand(i).getReg(); - if (OpReg == Reg) - containsReg = true; - // Anything other than a low register isn't legal here. - if (!isARMLowRegister(OpReg) && (!HiReg || OpReg != HiReg)) - return true; - } - return false; -} - -// Check if the specified regisgter is in the register list of the inst, -// starting at the indicated operand number. -static bool listContainsReg(const MCInst &Inst, unsigned OpNo, unsigned Reg) { - for (unsigned i = OpNo, e = Inst.getNumOperands(); i < e; ++i) { - unsigned OpReg = Inst.getOperand(i).getReg(); - if (OpReg == Reg) - return true; - } - return false; -} - -// Return true if instruction has the interesting property of being -// allowed in IT blocks, but not being predicable. -static bool instIsBreakpoint(const MCInst &Inst) { - return Inst.getOpcode() == ARM::tBKPT || - Inst.getOpcode() == ARM::BKPT || - Inst.getOpcode() == ARM::tHLT || - Inst.getOpcode() == ARM::HLT; -} - -bool ARMAsmParser::validatetLDMRegList(const MCInst &Inst, - const OperandVector &Operands, - unsigned ListNo, bool IsARPop) { - const ARMOperand &Op = static_cast<const ARMOperand &>(*Operands[ListNo]); - bool HasWritebackToken = Op.isToken() && Op.getToken() == "!"; - - bool ListContainsSP = listContainsReg(Inst, ListNo, ARM::SP); - bool ListContainsLR = listContainsReg(Inst, ListNo, ARM::LR); - bool ListContainsPC = listContainsReg(Inst, ListNo, ARM::PC); - - if (!IsARPop && ListContainsSP) - return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(), - "SP may not be in the register list"); - else if (ListContainsPC && ListContainsLR) - return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(), - "PC and LR may not be in the register list simultaneously"); - return false; -} - -bool ARMAsmParser::validatetSTMRegList(const MCInst &Inst, - const OperandVector &Operands, - unsigned ListNo) { - const ARMOperand &Op = static_cast<const ARMOperand &>(*Operands[ListNo]); - bool HasWritebackToken = Op.isToken() && Op.getToken() == "!"; - - bool ListContainsSP = listContainsReg(Inst, ListNo, ARM::SP); - bool ListContainsPC = listContainsReg(Inst, ListNo, ARM::PC); - - if (ListContainsSP && ListContainsPC) - return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(), - "SP and PC may not be in the register list"); - else if (ListContainsSP) - return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(), - "SP may not be in the register list"); - else if (ListContainsPC) - return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(), - "PC may not be in the register list"); - return false; -} - -bool ARMAsmParser::validateLDRDSTRD(MCInst &Inst, - const OperandVector &Operands, - bool Load, bool ARMMode, bool Writeback) { - unsigned RtIndex = Load || !Writeback ? 0 : 1; - unsigned Rt = MRI->getEncodingValue(Inst.getOperand(RtIndex).getReg()); - unsigned Rt2 = MRI->getEncodingValue(Inst.getOperand(RtIndex + 1).getReg()); - - if (ARMMode) { - // Rt can't be R14. - if (Rt == 14) - return Error(Operands[3]->getStartLoc(), - "Rt can't be R14"); - - // Rt must be even-numbered. - if ((Rt & 1) == 1) - return Error(Operands[3]->getStartLoc(), - "Rt must be even-numbered"); - - // Rt2 must be Rt + 1. - if (Rt2 != Rt + 1) { - if (Load) - return Error(Operands[3]->getStartLoc(), - "destination operands must be sequential"); - else - return Error(Operands[3]->getStartLoc(), - "source operands must be sequential"); - } - - // FIXME: Diagnose m == 15 - // FIXME: Diagnose ldrd with m == t || m == t2. - } - - if (!ARMMode && Load) { - if (Rt2 == Rt) - return Error(Operands[3]->getStartLoc(), - "destination operands can't be identical"); - } - - if (Writeback) { - unsigned Rn = MRI->getEncodingValue(Inst.getOperand(3).getReg()); - - if (Rn == Rt || Rn == Rt2) { - if (Load) - return Error(Operands[3]->getStartLoc(), - "base register needs to be different from destination " - "registers"); - else - return Error(Operands[3]->getStartLoc(), - "source register and base register can't be identical"); - } - - // FIXME: Diagnose ldrd/strd with writeback and n == 15. - // (Except the immediate form of ldrd?) - } - - return false; -} - - -// FIXME: We would really like to be able to tablegen'erate this. -bool ARMAsmParser::validateInstruction(MCInst &Inst, - const OperandVector &Operands) { - const MCInstrDesc &MCID = MII.get(Inst.getOpcode()); - SMLoc Loc = Operands[0]->getStartLoc(); - - // Check the IT block state first. - // NOTE: BKPT and HLT instructions have the interesting property of being - // allowed in IT blocks, but not being predicable. They just always execute. - if (inITBlock() && !instIsBreakpoint(Inst)) { - // The instruction must be predicable. - if (!MCID.isPredicable()) - return Error(Loc, "instructions in IT block must be predicable"); - ARMCC::CondCodes Cond = ARMCC::CondCodes( - Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm()); - if (Cond != currentITCond()) { - // Find the condition code Operand to get its SMLoc information. - SMLoc CondLoc; - for (unsigned I = 1; I < Operands.size(); ++I) - if (static_cast<ARMOperand &>(*Operands[I]).isCondCode()) - CondLoc = Operands[I]->getStartLoc(); - return Error(CondLoc, "incorrect condition in IT block; got '" + - StringRef(ARMCondCodeToString(Cond)) + - "', but expected '" + - ARMCondCodeToString(currentITCond()) + "'"); - } - // Check for non-'al' condition codes outside of the IT block. - } else if (isThumbTwo() && MCID.isPredicable() && - Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm() != - ARMCC::AL && Inst.getOpcode() != ARM::tBcc && - Inst.getOpcode() != ARM::t2Bcc) { - return Error(Loc, "predicated instructions must be in IT block"); - } else if (!isThumb() && !useImplicitITARM() && MCID.isPredicable() && - Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm() != - ARMCC::AL) { - return Warning(Loc, "predicated instructions should be in IT block"); - } - - // PC-setting instructions in an IT block, but not the last instruction of - // the block, are UNPREDICTABLE. - if (inExplicitITBlock() && !lastInITBlock() && isITBlockTerminator(Inst)) { - return Error(Loc, "instruction must be outside of IT block or the last instruction in an IT block"); - } - - const unsigned Opcode = Inst.getOpcode(); - switch (Opcode) { - case ARM::t2IT: { - // Encoding is unpredictable if it ever results in a notional 'NV' - // predicate. Since we don't parse 'NV' directly this means an 'AL' - // predicate with an "else" mask bit. - unsigned Cond = Inst.getOperand(0).getImm(); - unsigned Mask = Inst.getOperand(1).getImm(); - - // Mask hasn't been modified to the IT instruction encoding yet so - // conditions only allowing a 't' are a block of 1s starting at bit 3 - // followed by all 0s. Easiest way is to just list the 4 possibilities. - if (Cond == ARMCC::AL && Mask != 8 && Mask != 12 && Mask != 14 && - Mask != 15) - return Error(Loc, "unpredictable IT predicate sequence"); - break; - } - case ARM::LDRD: - if (validateLDRDSTRD(Inst, Operands, /*Load*/true, /*ARMMode*/true, - /*Writeback*/false)) - return true; - break; - case ARM::LDRD_PRE: - case ARM::LDRD_POST: - if (validateLDRDSTRD(Inst, Operands, /*Load*/true, /*ARMMode*/true, - /*Writeback*/true)) - return true; - break; - case ARM::t2LDRDi8: - if (validateLDRDSTRD(Inst, Operands, /*Load*/true, /*ARMMode*/false, - /*Writeback*/false)) - return true; - break; - case ARM::t2LDRD_PRE: - case ARM::t2LDRD_POST: - if (validateLDRDSTRD(Inst, Operands, /*Load*/true, /*ARMMode*/false, - /*Writeback*/true)) - return true; - break; - case ARM::t2BXJ: { - const unsigned RmReg = Inst.getOperand(0).getReg(); - // Rm = SP is no longer unpredictable in v8-A - if (RmReg == ARM::SP && !hasV8Ops()) - return Error(Operands[2]->getStartLoc(), - "r13 (SP) is an unpredictable operand to BXJ"); - return false; - } - case ARM::STRD: - if (validateLDRDSTRD(Inst, Operands, /*Load*/false, /*ARMMode*/true, - /*Writeback*/false)) - return true; - break; - case ARM::STRD_PRE: - case ARM::STRD_POST: - if (validateLDRDSTRD(Inst, Operands, /*Load*/false, /*ARMMode*/true, - /*Writeback*/true)) - return true; - break; - case ARM::t2STRD_PRE: - case ARM::t2STRD_POST: - if (validateLDRDSTRD(Inst, Operands, /*Load*/false, /*ARMMode*/false, - /*Writeback*/true)) - return true; - break; - case ARM::STR_PRE_IMM: - case ARM::STR_PRE_REG: - case ARM::t2STR_PRE: - case ARM::STR_POST_IMM: - case ARM::STR_POST_REG: - case ARM::t2STR_POST: - case ARM::STRH_PRE: - case ARM::t2STRH_PRE: - case ARM::STRH_POST: - case ARM::t2STRH_POST: - case ARM::STRB_PRE_IMM: - case ARM::STRB_PRE_REG: - case ARM::t2STRB_PRE: - case ARM::STRB_POST_IMM: - case ARM::STRB_POST_REG: - case ARM::t2STRB_POST: { - // Rt must be different from Rn. - const unsigned Rt = MRI->getEncodingValue(Inst.getOperand(1).getReg()); - const unsigned Rn = MRI->getEncodingValue(Inst.getOperand(2).getReg()); - - if (Rt == Rn) - return Error(Operands[3]->getStartLoc(), - "source register and base register can't be identical"); - return false; - } - case ARM::LDR_PRE_IMM: - case ARM::LDR_PRE_REG: - case ARM::t2LDR_PRE: - case ARM::LDR_POST_IMM: - case ARM::LDR_POST_REG: - case ARM::t2LDR_POST: - case ARM::LDRH_PRE: - case ARM::t2LDRH_PRE: - case ARM::LDRH_POST: - case ARM::t2LDRH_POST: - case ARM::LDRSH_PRE: - case ARM::t2LDRSH_PRE: - case ARM::LDRSH_POST: - case ARM::t2LDRSH_POST: - case ARM::LDRB_PRE_IMM: - case ARM::LDRB_PRE_REG: - case ARM::t2LDRB_PRE: - case ARM::LDRB_POST_IMM: - case ARM::LDRB_POST_REG: - case ARM::t2LDRB_POST: - case ARM::LDRSB_PRE: - case ARM::t2LDRSB_PRE: - case ARM::LDRSB_POST: - case ARM::t2LDRSB_POST: { - // Rt must be different from Rn. - const unsigned Rt = MRI->getEncodingValue(Inst.getOperand(0).getReg()); - const unsigned Rn = MRI->getEncodingValue(Inst.getOperand(2).getReg()); - - if (Rt == Rn) - return Error(Operands[3]->getStartLoc(), - "destination register and base register can't be identical"); - return false; - } - case ARM::SBFX: - case ARM::t2SBFX: - case ARM::UBFX: - case ARM::t2UBFX: { - // Width must be in range [1, 32-lsb]. - unsigned LSB = Inst.getOperand(2).getImm(); - unsigned Widthm1 = Inst.getOperand(3).getImm(); - if (Widthm1 >= 32 - LSB) - return Error(Operands[5]->getStartLoc(), - "bitfield width must be in range [1,32-lsb]"); - return false; - } - // Notionally handles ARM::tLDMIA_UPD too. - case ARM::tLDMIA: { - // If we're parsing Thumb2, the .w variant is available and handles - // most cases that are normally illegal for a Thumb1 LDM instruction. - // We'll make the transformation in processInstruction() if necessary. - // - // Thumb LDM instructions are writeback iff the base register is not - // in the register list. - unsigned Rn = Inst.getOperand(0).getReg(); - bool HasWritebackToken = - (static_cast<ARMOperand &>(*Operands[3]).isToken() && - static_cast<ARMOperand &>(*Operands[3]).getToken() == "!"); - bool ListContainsBase; - if (checkLowRegisterList(Inst, 3, Rn, 0, ListContainsBase) && !isThumbTwo()) - return Error(Operands[3 + HasWritebackToken]->getStartLoc(), - "registers must be in range r0-r7"); - // If we should have writeback, then there should be a '!' token. - if (!ListContainsBase && !HasWritebackToken && !isThumbTwo()) - return Error(Operands[2]->getStartLoc(), - "writeback operator '!' expected"); - // If we should not have writeback, there must not be a '!'. This is - // true even for the 32-bit wide encodings. - if (ListContainsBase && HasWritebackToken) - return Error(Operands[3]->getStartLoc(), - "writeback operator '!' not allowed when base register " - "in register list"); - - if (validatetLDMRegList(Inst, Operands, 3)) - return true; - break; - } - case ARM::LDMIA_UPD: - case ARM::LDMDB_UPD: - case ARM::LDMIB_UPD: - case ARM::LDMDA_UPD: - // ARM variants loading and updating the same register are only officially - // UNPREDICTABLE on v7 upwards. Goodness knows what they did before. - if (!hasV7Ops()) - break; - if (listContainsReg(Inst, 3, Inst.getOperand(0).getReg())) - return Error(Operands.back()->getStartLoc(), - "writeback register not allowed in register list"); - break; - case ARM::t2LDMIA: - case ARM::t2LDMDB: - if (validatetLDMRegList(Inst, Operands, 3)) - return true; - break; - case ARM::t2STMIA: - case ARM::t2STMDB: - if (validatetSTMRegList(Inst, Operands, 3)) - return true; - break; - case ARM::t2LDMIA_UPD: - case ARM::t2LDMDB_UPD: - case ARM::t2STMIA_UPD: - case ARM::t2STMDB_UPD: - if (listContainsReg(Inst, 3, Inst.getOperand(0).getReg())) - return Error(Operands.back()->getStartLoc(), - "writeback register not allowed in register list"); - - if (Opcode == ARM::t2LDMIA_UPD || Opcode == ARM::t2LDMDB_UPD) { - if (validatetLDMRegList(Inst, Operands, 3)) - return true; - } else { - if (validatetSTMRegList(Inst, Operands, 3)) - return true; - } - break; - - case ARM::sysLDMIA_UPD: - case ARM::sysLDMDA_UPD: - case ARM::sysLDMDB_UPD: - case ARM::sysLDMIB_UPD: - if (!listContainsReg(Inst, 3, ARM::PC)) - return Error(Operands[4]->getStartLoc(), - "writeback register only allowed on system LDM " - "if PC in register-list"); - break; - case ARM::sysSTMIA_UPD: - case ARM::sysSTMDA_UPD: - case ARM::sysSTMDB_UPD: - case ARM::sysSTMIB_UPD: - return Error(Operands[2]->getStartLoc(), - "system STM cannot have writeback register"); - case ARM::tMUL: - // The second source operand must be the same register as the destination - // operand. - // - // In this case, we must directly check the parsed operands because the - // cvtThumbMultiply() function is written in such a way that it guarantees - // this first statement is always true for the new Inst. Essentially, the - // destination is unconditionally copied into the second source operand - // without checking to see if it matches what we actually parsed. - if (Operands.size() == 6 && (((ARMOperand &)*Operands[3]).getReg() != - ((ARMOperand &)*Operands[5]).getReg()) && - (((ARMOperand &)*Operands[3]).getReg() != - ((ARMOperand &)*Operands[4]).getReg())) { - return Error(Operands[3]->getStartLoc(), - "destination register must match source register"); - } - break; - - // Like for ldm/stm, push and pop have hi-reg handling version in Thumb2, - // so only issue a diagnostic for thumb1. The instructions will be - // switched to the t2 encodings in processInstruction() if necessary. - case ARM::tPOP: { - bool ListContainsBase; - if (checkLowRegisterList(Inst, 2, 0, ARM::PC, ListContainsBase) && - !isThumbTwo()) - return Error(Operands[2]->getStartLoc(), - "registers must be in range r0-r7 or pc"); - if (validatetLDMRegList(Inst, Operands, 2, !isMClass())) - return true; - break; - } - case ARM::tPUSH: { - bool ListContainsBase; - if (checkLowRegisterList(Inst, 2, 0, ARM::LR, ListContainsBase) && - !isThumbTwo()) - return Error(Operands[2]->getStartLoc(), - "registers must be in range r0-r7 or lr"); - if (validatetSTMRegList(Inst, Operands, 2)) - return true; - break; - } - case ARM::tSTMIA_UPD: { - bool ListContainsBase, InvalidLowList; - InvalidLowList = checkLowRegisterList(Inst, 4, Inst.getOperand(0).getReg(), - 0, ListContainsBase); - if (InvalidLowList && !isThumbTwo()) - return Error(Operands[4]->getStartLoc(), - "registers must be in range r0-r7"); - - // This would be converted to a 32-bit stm, but that's not valid if the - // writeback register is in the list. - if (InvalidLowList && ListContainsBase) - return Error(Operands[4]->getStartLoc(), - "writeback operator '!' not allowed when base register " - "in register list"); - - if (validatetSTMRegList(Inst, Operands, 4)) - return true; - break; - } - case ARM::tADDrSP: - // If the non-SP source operand and the destination operand are not the - // same, we need thumb2 (for the wide encoding), or we have an error. - if (!isThumbTwo() && - Inst.getOperand(0).getReg() != Inst.getOperand(2).getReg()) { - return Error(Operands[4]->getStartLoc(), - "source register must be the same as destination"); - } - break; - - // Final range checking for Thumb unconditional branch instructions. - case ARM::tB: - if (!(static_cast<ARMOperand &>(*Operands[2])).isSignedOffset<11, 1>()) - return Error(Operands[2]->getStartLoc(), "branch target out of range"); - break; - case ARM::t2B: { - int op = (Operands[2]->isImm()) ? 2 : 3; - if (!static_cast<ARMOperand &>(*Operands[op]).isSignedOffset<24, 1>()) - return Error(Operands[op]->getStartLoc(), "branch target out of range"); - break; - } - // Final range checking for Thumb conditional branch instructions. - case ARM::tBcc: - if (!static_cast<ARMOperand &>(*Operands[2]).isSignedOffset<8, 1>()) - return Error(Operands[2]->getStartLoc(), "branch target out of range"); - break; - case ARM::t2Bcc: { - int Op = (Operands[2]->isImm()) ? 2 : 3; - if (!static_cast<ARMOperand &>(*Operands[Op]).isSignedOffset<20, 1>()) - return Error(Operands[Op]->getStartLoc(), "branch target out of range"); - break; - } - case ARM::tCBZ: - case ARM::tCBNZ: { - if (!static_cast<ARMOperand &>(*Operands[2]).isUnsignedOffset<6, 1>()) - return Error(Operands[2]->getStartLoc(), "branch target out of range"); - break; - } - case ARM::MOVi16: - case ARM::MOVTi16: - case ARM::t2MOVi16: - case ARM::t2MOVTi16: - { - // We want to avoid misleadingly allowing something like "mov r0, <symbol>" - // especially when we turn it into a movw and the expression <symbol> does - // not have a :lower16: or :upper16 as part of the expression. We don't - // want the behavior of silently truncating, which can be unexpected and - // lead to bugs that are difficult to find since this is an easy mistake - // to make. - int i = (Operands[3]->isImm()) ? 3 : 4; - ARMOperand &Op = static_cast<ARMOperand &>(*Operands[i]); - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op.getImm()); - if (CE) break; - const MCExpr *E = dyn_cast<MCExpr>(Op.getImm()); - if (!E) break; - const ARMMCExpr *ARM16Expr = dyn_cast<ARMMCExpr>(E); - if (!ARM16Expr || (ARM16Expr->getKind() != ARMMCExpr::VK_ARM_HI16 && - ARM16Expr->getKind() != ARMMCExpr::VK_ARM_LO16)) - return Error( - Op.getStartLoc(), - "immediate expression for mov requires :lower16: or :upper16"); - break; - } - case ARM::HINT: - case ARM::t2HINT: { - unsigned Imm8 = Inst.getOperand(0).getImm(); - unsigned Pred = Inst.getOperand(1).getImm(); - // ESB is not predicable (pred must be AL). Without the RAS extension, this - // behaves as any other unallocated hint. - if (Imm8 == 0x10 && Pred != ARMCC::AL && hasRAS()) - return Error(Operands[1]->getStartLoc(), "instruction 'esb' is not " - "predicable, but condition " - "code specified"); - if (Imm8 == 0x14 && Pred != ARMCC::AL) - return Error(Operands[1]->getStartLoc(), "instruction 'csdb' is not " - "predicable, but condition " - "code specified"); - break; - } - case ARM::DSB: - case ARM::t2DSB: { - - if (Inst.getNumOperands() < 2) - break; - - unsigned Option = Inst.getOperand(0).getImm(); - unsigned Pred = Inst.getOperand(1).getImm(); - - // SSBB and PSSBB (DSB #0|#4) are not predicable (pred must be AL). - if (Option == 0 && Pred != ARMCC::AL) - return Error(Operands[1]->getStartLoc(), - "instruction 'ssbb' is not predicable, but condition code " - "specified"); - if (Option == 4 && Pred != ARMCC::AL) - return Error(Operands[1]->getStartLoc(), - "instruction 'pssbb' is not predicable, but condition code " - "specified"); - break; - } - case ARM::VMOVRRS: { - // Source registers must be sequential. - const unsigned Sm = MRI->getEncodingValue(Inst.getOperand(2).getReg()); - const unsigned Sm1 = MRI->getEncodingValue(Inst.getOperand(3).getReg()); - if (Sm1 != Sm + 1) - return Error(Operands[5]->getStartLoc(), - "source operands must be sequential"); - break; - } - case ARM::VMOVSRR: { - // Destination registers must be sequential. - const unsigned Sm = MRI->getEncodingValue(Inst.getOperand(0).getReg()); - const unsigned Sm1 = MRI->getEncodingValue(Inst.getOperand(1).getReg()); - if (Sm1 != Sm + 1) - return Error(Operands[3]->getStartLoc(), - "destination operands must be sequential"); - break; - } - case ARM::VLDMDIA: - case ARM::VSTMDIA: { - ARMOperand &Op = static_cast<ARMOperand&>(*Operands[3]); - auto &RegList = Op.getRegList(); - if (RegList.size() < 1 || RegList.size() > 16) - return Error(Operands[3]->getStartLoc(), - "list of registers must be at least 1 and at most 16"); - break; - } - } - - return false; -} - -static unsigned getRealVSTOpcode(unsigned Opc, unsigned &Spacing) { - switch(Opc) { - default: llvm_unreachable("unexpected opcode!"); - // VST1LN - case ARM::VST1LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST1LNd8_UPD; - case ARM::VST1LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST1LNd16_UPD; - case ARM::VST1LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST1LNd32_UPD; - case ARM::VST1LNdWB_register_Asm_8: Spacing = 1; return ARM::VST1LNd8_UPD; - case ARM::VST1LNdWB_register_Asm_16: Spacing = 1; return ARM::VST1LNd16_UPD; - case ARM::VST1LNdWB_register_Asm_32: Spacing = 1; return ARM::VST1LNd32_UPD; - case ARM::VST1LNdAsm_8: Spacing = 1; return ARM::VST1LNd8; - case ARM::VST1LNdAsm_16: Spacing = 1; return ARM::VST1LNd16; - case ARM::VST1LNdAsm_32: Spacing = 1; return ARM::VST1LNd32; - - // VST2LN - case ARM::VST2LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST2LNd8_UPD; - case ARM::VST2LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST2LNd16_UPD; - case ARM::VST2LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST2LNd32_UPD; - case ARM::VST2LNqWB_fixed_Asm_16: Spacing = 2; return ARM::VST2LNq16_UPD; - case ARM::VST2LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VST2LNq32_UPD; - - case ARM::VST2LNdWB_register_Asm_8: Spacing = 1; return ARM::VST2LNd8_UPD; - case ARM::VST2LNdWB_register_Asm_16: Spacing = 1; return ARM::VST2LNd16_UPD; - case ARM::VST2LNdWB_register_Asm_32: Spacing = 1; return ARM::VST2LNd32_UPD; - case ARM::VST2LNqWB_register_Asm_16: Spacing = 2; return ARM::VST2LNq16_UPD; - case ARM::VST2LNqWB_register_Asm_32: Spacing = 2; return ARM::VST2LNq32_UPD; - - case ARM::VST2LNdAsm_8: Spacing = 1; return ARM::VST2LNd8; - case ARM::VST2LNdAsm_16: Spacing = 1; return ARM::VST2LNd16; - case ARM::VST2LNdAsm_32: Spacing = 1; return ARM::VST2LNd32; - case ARM::VST2LNqAsm_16: Spacing = 2; return ARM::VST2LNq16; - case ARM::VST2LNqAsm_32: Spacing = 2; return ARM::VST2LNq32; - - // VST3LN - case ARM::VST3LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST3LNd8_UPD; - case ARM::VST3LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST3LNd16_UPD; - case ARM::VST3LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST3LNd32_UPD; - case ARM::VST3LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VST3LNq16_UPD; - case ARM::VST3LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VST3LNq32_UPD; - case ARM::VST3LNdWB_register_Asm_8: Spacing = 1; return ARM::VST3LNd8_UPD; - case ARM::VST3LNdWB_register_Asm_16: Spacing = 1; return ARM::VST3LNd16_UPD; - case ARM::VST3LNdWB_register_Asm_32: Spacing = 1; return ARM::VST3LNd32_UPD; - case ARM::VST3LNqWB_register_Asm_16: Spacing = 2; return ARM::VST3LNq16_UPD; - case ARM::VST3LNqWB_register_Asm_32: Spacing = 2; return ARM::VST3LNq32_UPD; - case ARM::VST3LNdAsm_8: Spacing = 1; return ARM::VST3LNd8; - case ARM::VST3LNdAsm_16: Spacing = 1; return ARM::VST3LNd16; - case ARM::VST3LNdAsm_32: Spacing = 1; return ARM::VST3LNd32; - case ARM::VST3LNqAsm_16: Spacing = 2; return ARM::VST3LNq16; - case ARM::VST3LNqAsm_32: Spacing = 2; return ARM::VST3LNq32; - - // VST3 - case ARM::VST3dWB_fixed_Asm_8: Spacing = 1; return ARM::VST3d8_UPD; - case ARM::VST3dWB_fixed_Asm_16: Spacing = 1; return ARM::VST3d16_UPD; - case ARM::VST3dWB_fixed_Asm_32: Spacing = 1; return ARM::VST3d32_UPD; - case ARM::VST3qWB_fixed_Asm_8: Spacing = 2; return ARM::VST3q8_UPD; - case ARM::VST3qWB_fixed_Asm_16: Spacing = 2; return ARM::VST3q16_UPD; - case ARM::VST3qWB_fixed_Asm_32: Spacing = 2; return ARM::VST3q32_UPD; - case ARM::VST3dWB_register_Asm_8: Spacing = 1; return ARM::VST3d8_UPD; - case ARM::VST3dWB_register_Asm_16: Spacing = 1; return ARM::VST3d16_UPD; - case ARM::VST3dWB_register_Asm_32: Spacing = 1; return ARM::VST3d32_UPD; - case ARM::VST3qWB_register_Asm_8: Spacing = 2; return ARM::VST3q8_UPD; - case ARM::VST3qWB_register_Asm_16: Spacing = 2; return ARM::VST3q16_UPD; - case ARM::VST3qWB_register_Asm_32: Spacing = 2; return ARM::VST3q32_UPD; - case ARM::VST3dAsm_8: Spacing = 1; return ARM::VST3d8; - case ARM::VST3dAsm_16: Spacing = 1; return ARM::VST3d16; - case ARM::VST3dAsm_32: Spacing = 1; return ARM::VST3d32; - case ARM::VST3qAsm_8: Spacing = 2; return ARM::VST3q8; - case ARM::VST3qAsm_16: Spacing = 2; return ARM::VST3q16; - case ARM::VST3qAsm_32: Spacing = 2; return ARM::VST3q32; - - // VST4LN - case ARM::VST4LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST4LNd8_UPD; - case ARM::VST4LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST4LNd16_UPD; - case ARM::VST4LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST4LNd32_UPD; - case ARM::VST4LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VST4LNq16_UPD; - case ARM::VST4LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VST4LNq32_UPD; - case ARM::VST4LNdWB_register_Asm_8: Spacing = 1; return ARM::VST4LNd8_UPD; - case ARM::VST4LNdWB_register_Asm_16: Spacing = 1; return ARM::VST4LNd16_UPD; - case ARM::VST4LNdWB_register_Asm_32: Spacing = 1; return ARM::VST4LNd32_UPD; - case ARM::VST4LNqWB_register_Asm_16: Spacing = 2; return ARM::VST4LNq16_UPD; - case ARM::VST4LNqWB_register_Asm_32: Spacing = 2; return ARM::VST4LNq32_UPD; - case ARM::VST4LNdAsm_8: Spacing = 1; return ARM::VST4LNd8; - case ARM::VST4LNdAsm_16: Spacing = 1; return ARM::VST4LNd16; - case ARM::VST4LNdAsm_32: Spacing = 1; return ARM::VST4LNd32; - case ARM::VST4LNqAsm_16: Spacing = 2; return ARM::VST4LNq16; - case ARM::VST4LNqAsm_32: Spacing = 2; return ARM::VST4LNq32; - - // VST4 - case ARM::VST4dWB_fixed_Asm_8: Spacing = 1; return ARM::VST4d8_UPD; - case ARM::VST4dWB_fixed_Asm_16: Spacing = 1; return ARM::VST4d16_UPD; - case ARM::VST4dWB_fixed_Asm_32: Spacing = 1; return ARM::VST4d32_UPD; - case ARM::VST4qWB_fixed_Asm_8: Spacing = 2; return ARM::VST4q8_UPD; - case ARM::VST4qWB_fixed_Asm_16: Spacing = 2; return ARM::VST4q16_UPD; - case ARM::VST4qWB_fixed_Asm_32: Spacing = 2; return ARM::VST4q32_UPD; - case ARM::VST4dWB_register_Asm_8: Spacing = 1; return ARM::VST4d8_UPD; - case ARM::VST4dWB_register_Asm_16: Spacing = 1; return ARM::VST4d16_UPD; - case ARM::VST4dWB_register_Asm_32: Spacing = 1; return ARM::VST4d32_UPD; - case ARM::VST4qWB_register_Asm_8: Spacing = 2; return ARM::VST4q8_UPD; - case ARM::VST4qWB_register_Asm_16: Spacing = 2; return ARM::VST4q16_UPD; - case ARM::VST4qWB_register_Asm_32: Spacing = 2; return ARM::VST4q32_UPD; - case ARM::VST4dAsm_8: Spacing = 1; return ARM::VST4d8; - case ARM::VST4dAsm_16: Spacing = 1; return ARM::VST4d16; - case ARM::VST4dAsm_32: Spacing = 1; return ARM::VST4d32; - case ARM::VST4qAsm_8: Spacing = 2; return ARM::VST4q8; - case ARM::VST4qAsm_16: Spacing = 2; return ARM::VST4q16; - case ARM::VST4qAsm_32: Spacing = 2; return ARM::VST4q32; - } -} - -static unsigned getRealVLDOpcode(unsigned Opc, unsigned &Spacing) { - switch(Opc) { - default: llvm_unreachable("unexpected opcode!"); - // VLD1LN - case ARM::VLD1LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD1LNd8_UPD; - case ARM::VLD1LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD1LNd16_UPD; - case ARM::VLD1LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD1LNd32_UPD; - case ARM::VLD1LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD1LNd8_UPD; - case ARM::VLD1LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD1LNd16_UPD; - case ARM::VLD1LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD1LNd32_UPD; - case ARM::VLD1LNdAsm_8: Spacing = 1; return ARM::VLD1LNd8; - case ARM::VLD1LNdAsm_16: Spacing = 1; return ARM::VLD1LNd16; - case ARM::VLD1LNdAsm_32: Spacing = 1; return ARM::VLD1LNd32; - - // VLD2LN - case ARM::VLD2LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD2LNd8_UPD; - case ARM::VLD2LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD2LNd16_UPD; - case ARM::VLD2LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD2LNd32_UPD; - case ARM::VLD2LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VLD2LNq16_UPD; - case ARM::VLD2LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD2LNq32_UPD; - case ARM::VLD2LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD2LNd8_UPD; - case ARM::VLD2LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD2LNd16_UPD; - case ARM::VLD2LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD2LNd32_UPD; - case ARM::VLD2LNqWB_register_Asm_16: Spacing = 2; return ARM::VLD2LNq16_UPD; - case ARM::VLD2LNqWB_register_Asm_32: Spacing = 2; return ARM::VLD2LNq32_UPD; - case ARM::VLD2LNdAsm_8: Spacing = 1; return ARM::VLD2LNd8; - case ARM::VLD2LNdAsm_16: Spacing = 1; return ARM::VLD2LNd16; - case ARM::VLD2LNdAsm_32: Spacing = 1; return ARM::VLD2LNd32; - case ARM::VLD2LNqAsm_16: Spacing = 2; return ARM::VLD2LNq16; - case ARM::VLD2LNqAsm_32: Spacing = 2; return ARM::VLD2LNq32; - - // VLD3DUP - case ARM::VLD3DUPdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3DUPd8_UPD; - case ARM::VLD3DUPdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3DUPd16_UPD; - case ARM::VLD3DUPdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD3DUPd32_UPD; - case ARM::VLD3DUPqWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3DUPq8_UPD; - case ARM::VLD3DUPqWB_fixed_Asm_16: Spacing = 2; return ARM::VLD3DUPq16_UPD; - case ARM::VLD3DUPqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD3DUPq32_UPD; - case ARM::VLD3DUPdWB_register_Asm_8: Spacing = 1; return ARM::VLD3DUPd8_UPD; - case ARM::VLD3DUPdWB_register_Asm_16: Spacing = 1; return ARM::VLD3DUPd16_UPD; - case ARM::VLD3DUPdWB_register_Asm_32: Spacing = 1; return ARM::VLD3DUPd32_UPD; - case ARM::VLD3DUPqWB_register_Asm_8: Spacing = 2; return ARM::VLD3DUPq8_UPD; - case ARM::VLD3DUPqWB_register_Asm_16: Spacing = 2; return ARM::VLD3DUPq16_UPD; - case ARM::VLD3DUPqWB_register_Asm_32: Spacing = 2; return ARM::VLD3DUPq32_UPD; - case ARM::VLD3DUPdAsm_8: Spacing = 1; return ARM::VLD3DUPd8; - case ARM::VLD3DUPdAsm_16: Spacing = 1; return ARM::VLD3DUPd16; - case ARM::VLD3DUPdAsm_32: Spacing = 1; return ARM::VLD3DUPd32; - case ARM::VLD3DUPqAsm_8: Spacing = 2; return ARM::VLD3DUPq8; - case ARM::VLD3DUPqAsm_16: Spacing = 2; return ARM::VLD3DUPq16; - case ARM::VLD3DUPqAsm_32: Spacing = 2; return ARM::VLD3DUPq32; - - // VLD3LN - case ARM::VLD3LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3LNd8_UPD; - case ARM::VLD3LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3LNd16_UPD; - case ARM::VLD3LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD3LNd32_UPD; - case ARM::VLD3LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3LNq16_UPD; - case ARM::VLD3LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD3LNq32_UPD; - case ARM::VLD3LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD3LNd8_UPD; - case ARM::VLD3LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD3LNd16_UPD; - case ARM::VLD3LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD3LNd32_UPD; - case ARM::VLD3LNqWB_register_Asm_16: Spacing = 2; return ARM::VLD3LNq16_UPD; - case ARM::VLD3LNqWB_register_Asm_32: Spacing = 2; return ARM::VLD3LNq32_UPD; - case ARM::VLD3LNdAsm_8: Spacing = 1; return ARM::VLD3LNd8; - case ARM::VLD3LNdAsm_16: Spacing = 1; return ARM::VLD3LNd16; - case ARM::VLD3LNdAsm_32: Spacing = 1; return ARM::VLD3LNd32; - case ARM::VLD3LNqAsm_16: Spacing = 2; return ARM::VLD3LNq16; - case ARM::VLD3LNqAsm_32: Spacing = 2; return ARM::VLD3LNq32; - - // VLD3 - case ARM::VLD3dWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3d8_UPD; - case ARM::VLD3dWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3d16_UPD; - case ARM::VLD3dWB_fixed_Asm_32: Spacing = 1; return ARM::VLD3d32_UPD; - case ARM::VLD3qWB_fixed_Asm_8: Spacing = 2; return ARM::VLD3q8_UPD; - case ARM::VLD3qWB_fixed_Asm_16: Spacing = 2; return ARM::VLD3q16_UPD; - case ARM::VLD3qWB_fixed_Asm_32: Spacing = 2; return ARM::VLD3q32_UPD; - case ARM::VLD3dWB_register_Asm_8: Spacing = 1; return ARM::VLD3d8_UPD; - case ARM::VLD3dWB_register_Asm_16: Spacing = 1; return ARM::VLD3d16_UPD; - case ARM::VLD3dWB_register_Asm_32: Spacing = 1; return ARM::VLD3d32_UPD; - case ARM::VLD3qWB_register_Asm_8: Spacing = 2; return ARM::VLD3q8_UPD; - case ARM::VLD3qWB_register_Asm_16: Spacing = 2; return ARM::VLD3q16_UPD; - case ARM::VLD3qWB_register_Asm_32: Spacing = 2; return ARM::VLD3q32_UPD; - case ARM::VLD3dAsm_8: Spacing = 1; return ARM::VLD3d8; - case ARM::VLD3dAsm_16: Spacing = 1; return ARM::VLD3d16; - case ARM::VLD3dAsm_32: Spacing = 1; return ARM::VLD3d32; - case ARM::VLD3qAsm_8: Spacing = 2; return ARM::VLD3q8; - case ARM::VLD3qAsm_16: Spacing = 2; return ARM::VLD3q16; - case ARM::VLD3qAsm_32: Spacing = 2; return ARM::VLD3q32; - - // VLD4LN - case ARM::VLD4LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4LNd8_UPD; - case ARM::VLD4LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4LNd16_UPD; - case ARM::VLD4LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD4LNd32_UPD; - case ARM::VLD4LNqWB_fixed_Asm_16: Spacing = 2; return ARM::VLD4LNq16_UPD; - case ARM::VLD4LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD4LNq32_UPD; - case ARM::VLD4LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD4LNd8_UPD; - case ARM::VLD4LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD4LNd16_UPD; - case ARM::VLD4LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD4LNd32_UPD; - case ARM::VLD4LNqWB_register_Asm_16: Spacing = 2; return ARM::VLD4LNq16_UPD; - case ARM::VLD4LNqWB_register_Asm_32: Spacing = 2; return ARM::VLD4LNq32_UPD; - case ARM::VLD4LNdAsm_8: Spacing = 1; return ARM::VLD4LNd8; - case ARM::VLD4LNdAsm_16: Spacing = 1; return ARM::VLD4LNd16; - case ARM::VLD4LNdAsm_32: Spacing = 1; return ARM::VLD4LNd32; - case ARM::VLD4LNqAsm_16: Spacing = 2; return ARM::VLD4LNq16; - case ARM::VLD4LNqAsm_32: Spacing = 2; return ARM::VLD4LNq32; - - // VLD4DUP - case ARM::VLD4DUPdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4DUPd8_UPD; - case ARM::VLD4DUPdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4DUPd16_UPD; - case ARM::VLD4DUPdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD4DUPd32_UPD; - case ARM::VLD4DUPqWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4DUPq8_UPD; - case ARM::VLD4DUPqWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4DUPq16_UPD; - case ARM::VLD4DUPqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD4DUPq32_UPD; - case ARM::VLD4DUPdWB_register_Asm_8: Spacing = 1; return ARM::VLD4DUPd8_UPD; - case ARM::VLD4DUPdWB_register_Asm_16: Spacing = 1; return ARM::VLD4DUPd16_UPD; - case ARM::VLD4DUPdWB_register_Asm_32: Spacing = 1; return ARM::VLD4DUPd32_UPD; - case ARM::VLD4DUPqWB_register_Asm_8: Spacing = 2; return ARM::VLD4DUPq8_UPD; - case ARM::VLD4DUPqWB_register_Asm_16: Spacing = 2; return ARM::VLD4DUPq16_UPD; - case ARM::VLD4DUPqWB_register_Asm_32: Spacing = 2; return ARM::VLD4DUPq32_UPD; - case ARM::VLD4DUPdAsm_8: Spacing = 1; return ARM::VLD4DUPd8; - case ARM::VLD4DUPdAsm_16: Spacing = 1; return ARM::VLD4DUPd16; - case ARM::VLD4DUPdAsm_32: Spacing = 1; return ARM::VLD4DUPd32; - case ARM::VLD4DUPqAsm_8: Spacing = 2; return ARM::VLD4DUPq8; - case ARM::VLD4DUPqAsm_16: Spacing = 2; return ARM::VLD4DUPq16; - case ARM::VLD4DUPqAsm_32: Spacing = 2; return ARM::VLD4DUPq32; - - // VLD4 - case ARM::VLD4dWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4d8_UPD; - case ARM::VLD4dWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4d16_UPD; - case ARM::VLD4dWB_fixed_Asm_32: Spacing = 1; return ARM::VLD4d32_UPD; - case ARM::VLD4qWB_fixed_Asm_8: Spacing = 2; return ARM::VLD4q8_UPD; - case ARM::VLD4qWB_fixed_Asm_16: Spacing = 2; return ARM::VLD4q16_UPD; - case ARM::VLD4qWB_fixed_Asm_32: Spacing = 2; return ARM::VLD4q32_UPD; - case ARM::VLD4dWB_register_Asm_8: Spacing = 1; return ARM::VLD4d8_UPD; - case ARM::VLD4dWB_register_Asm_16: Spacing = 1; return ARM::VLD4d16_UPD; - case ARM::VLD4dWB_register_Asm_32: Spacing = 1; return ARM::VLD4d32_UPD; - case ARM::VLD4qWB_register_Asm_8: Spacing = 2; return ARM::VLD4q8_UPD; - case ARM::VLD4qWB_register_Asm_16: Spacing = 2; return ARM::VLD4q16_UPD; - case ARM::VLD4qWB_register_Asm_32: Spacing = 2; return ARM::VLD4q32_UPD; - case ARM::VLD4dAsm_8: Spacing = 1; return ARM::VLD4d8; - case ARM::VLD4dAsm_16: Spacing = 1; return ARM::VLD4d16; - case ARM::VLD4dAsm_32: Spacing = 1; return ARM::VLD4d32; - case ARM::VLD4qAsm_8: Spacing = 2; return ARM::VLD4q8; - case ARM::VLD4qAsm_16: Spacing = 2; return ARM::VLD4q16; - case ARM::VLD4qAsm_32: Spacing = 2; return ARM::VLD4q32; - } -} - -bool ARMAsmParser::processInstruction(MCInst &Inst, - const OperandVector &Operands, - MCStreamer &Out) { - // Check if we have the wide qualifier, because if it's present we - // must avoid selecting a 16-bit thumb instruction. - bool HasWideQualifier = false; - for (auto &Op : Operands) { - ARMOperand &ARMOp = static_cast<ARMOperand&>(*Op); - if (ARMOp.isToken() && ARMOp.getToken() == ".w") { - HasWideQualifier = true; - break; - } - } - - switch (Inst.getOpcode()) { - // Alias for alternate form of 'ldr{,b}t Rt, [Rn], #imm' instruction. - case ARM::LDRT_POST: - case ARM::LDRBT_POST: { - const unsigned Opcode = - (Inst.getOpcode() == ARM::LDRT_POST) ? ARM::LDRT_POST_IMM - : ARM::LDRBT_POST_IMM; - MCInst TmpInst; - TmpInst.setOpcode(Opcode); - TmpInst.addOperand(Inst.getOperand(0)); - TmpInst.addOperand(Inst.getOperand(1)); - TmpInst.addOperand(Inst.getOperand(1)); - TmpInst.addOperand(MCOperand::createReg(0)); - TmpInst.addOperand(MCOperand::createImm(0)); - TmpInst.addOperand(Inst.getOperand(2)); - TmpInst.addOperand(Inst.getOperand(3)); - Inst = TmpInst; - return true; - } - // Alias for alternate form of 'str{,b}t Rt, [Rn], #imm' instruction. - case ARM::STRT_POST: - case ARM::STRBT_POST: { - const unsigned Opcode = - (Inst.getOpcode() == ARM::STRT_POST) ? ARM::STRT_POST_IMM - : ARM::STRBT_POST_IMM; - MCInst TmpInst; - TmpInst.setOpcode(Opcode); - TmpInst.addOperand(Inst.getOperand(1)); - TmpInst.addOperand(Inst.getOperand(0)); - TmpInst.addOperand(Inst.getOperand(1)); - TmpInst.addOperand(MCOperand::createReg(0)); - TmpInst.addOperand(MCOperand::createImm(0)); - TmpInst.addOperand(Inst.getOperand(2)); - TmpInst.addOperand(Inst.getOperand(3)); - Inst = TmpInst; - return true; - } - // Alias for alternate form of 'ADR Rd, #imm' instruction. - case ARM::ADDri: { - if (Inst.getOperand(1).getReg() != ARM::PC || - Inst.getOperand(5).getReg() != 0 || - !(Inst.getOperand(2).isExpr() || Inst.getOperand(2).isImm())) - return false; - MCInst TmpInst; - TmpInst.setOpcode(ARM::ADR); - TmpInst.addOperand(Inst.getOperand(0)); - if (Inst.getOperand(2).isImm()) { - // Immediate (mod_imm) will be in its encoded form, we must unencode it - // before passing it to the ADR instruction. - unsigned Enc = Inst.getOperand(2).getImm(); - TmpInst.addOperand(MCOperand::createImm( - ARM_AM::rotr32(Enc & 0xFF, (Enc & 0xF00) >> 7))); - } else { - // Turn PC-relative expression into absolute expression. - // Reading PC provides the start of the current instruction + 8 and - // the transform to adr is biased by that. - MCSymbol *Dot = getContext().createTempSymbol(); - Out.EmitLabel(Dot); - const MCExpr *OpExpr = Inst.getOperand(2).getExpr(); - const MCExpr *InstPC = MCSymbolRefExpr::create(Dot, - MCSymbolRefExpr::VK_None, - getContext()); - const MCExpr *Const8 = MCConstantExpr::create(8, getContext()); - const MCExpr *ReadPC = MCBinaryExpr::createAdd(InstPC, Const8, - getContext()); - const MCExpr *FixupAddr = MCBinaryExpr::createAdd(ReadPC, OpExpr, - getContext()); - TmpInst.addOperand(MCOperand::createExpr(FixupAddr)); - } - TmpInst.addOperand(Inst.getOperand(3)); - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - // Aliases for alternate PC+imm syntax of LDR instructions. - case ARM::t2LDRpcrel: - // Select the narrow version if the immediate will fit. - if (Inst.getOperand(1).getImm() > 0 && - Inst.getOperand(1).getImm() <= 0xff && - !HasWideQualifier) - Inst.setOpcode(ARM::tLDRpci); - else - Inst.setOpcode(ARM::t2LDRpci); - return true; - case ARM::t2LDRBpcrel: - Inst.setOpcode(ARM::t2LDRBpci); - return true; - case ARM::t2LDRHpcrel: - Inst.setOpcode(ARM::t2LDRHpci); - return true; - case ARM::t2LDRSBpcrel: - Inst.setOpcode(ARM::t2LDRSBpci); - return true; - case ARM::t2LDRSHpcrel: - Inst.setOpcode(ARM::t2LDRSHpci); - return true; - case ARM::LDRConstPool: - case ARM::tLDRConstPool: - case ARM::t2LDRConstPool: { - // Pseudo instruction ldr rt, =immediate is converted to a - // MOV rt, immediate if immediate is known and representable - // otherwise we create a constant pool entry that we load from. - MCInst TmpInst; - if (Inst.getOpcode() == ARM::LDRConstPool) - TmpInst.setOpcode(ARM::LDRi12); - else if (Inst.getOpcode() == ARM::tLDRConstPool) - TmpInst.setOpcode(ARM::tLDRpci); - else if (Inst.getOpcode() == ARM::t2LDRConstPool) - TmpInst.setOpcode(ARM::t2LDRpci); - const ARMOperand &PoolOperand = - (HasWideQualifier ? - static_cast<ARMOperand &>(*Operands[4]) : - static_cast<ARMOperand &>(*Operands[3])); - const MCExpr *SubExprVal = PoolOperand.getConstantPoolImm(); - // If SubExprVal is a constant we may be able to use a MOV - if (isa<MCConstantExpr>(SubExprVal) && - Inst.getOperand(0).getReg() != ARM::PC && - Inst.getOperand(0).getReg() != ARM::SP) { - int64_t Value = - (int64_t) (cast<MCConstantExpr>(SubExprVal))->getValue(); - bool UseMov = true; - bool MovHasS = true; - if (Inst.getOpcode() == ARM::LDRConstPool) { - // ARM Constant - if (ARM_AM::getSOImmVal(Value) != -1) { - Value = ARM_AM::getSOImmVal(Value); - TmpInst.setOpcode(ARM::MOVi); - } - else if (ARM_AM::getSOImmVal(~Value) != -1) { - Value = ARM_AM::getSOImmVal(~Value); - TmpInst.setOpcode(ARM::MVNi); - } - else if (hasV6T2Ops() && - Value >=0 && Value < 65536) { - TmpInst.setOpcode(ARM::MOVi16); - MovHasS = false; - } - else - UseMov = false; - } - else { - // Thumb/Thumb2 Constant - if (hasThumb2() && - ARM_AM::getT2SOImmVal(Value) != -1) - TmpInst.setOpcode(ARM::t2MOVi); - else if (hasThumb2() && - ARM_AM::getT2SOImmVal(~Value) != -1) { - TmpInst.setOpcode(ARM::t2MVNi); - Value = ~Value; - } - else if (hasV8MBaseline() && - Value >=0 && Value < 65536) { - TmpInst.setOpcode(ARM::t2MOVi16); - MovHasS = false; - } - else - UseMov = false; - } - if (UseMov) { - TmpInst.addOperand(Inst.getOperand(0)); // Rt - TmpInst.addOperand(MCOperand::createImm(Value)); // Immediate - TmpInst.addOperand(Inst.getOperand(2)); // CondCode - TmpInst.addOperand(Inst.getOperand(3)); // CondCode - if (MovHasS) - TmpInst.addOperand(MCOperand::createReg(0)); // S - Inst = TmpInst; - return true; - } - } - // No opportunity to use MOV/MVN create constant pool - const MCExpr *CPLoc = - getTargetStreamer().addConstantPoolEntry(SubExprVal, - PoolOperand.getStartLoc()); - TmpInst.addOperand(Inst.getOperand(0)); // Rt - TmpInst.addOperand(MCOperand::createExpr(CPLoc)); // offset to constpool - if (TmpInst.getOpcode() == ARM::LDRi12) - TmpInst.addOperand(MCOperand::createImm(0)); // unused offset - TmpInst.addOperand(Inst.getOperand(2)); // CondCode - TmpInst.addOperand(Inst.getOperand(3)); // CondCode - Inst = TmpInst; - return true; - } - // Handle NEON VST complex aliases. - case ARM::VST1LNdWB_register_Asm_8: - case ARM::VST1LNdWB_register_Asm_16: - case ARM::VST1LNdWB_register_Asm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(Inst.getOperand(4)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(5)); // CondCode - TmpInst.addOperand(Inst.getOperand(6)); - Inst = TmpInst; - return true; - } - - case ARM::VST2LNdWB_register_Asm_8: - case ARM::VST2LNdWB_register_Asm_16: - case ARM::VST2LNdWB_register_Asm_32: - case ARM::VST2LNqWB_register_Asm_16: - case ARM::VST2LNqWB_register_Asm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(Inst.getOperand(4)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(5)); // CondCode - TmpInst.addOperand(Inst.getOperand(6)); - Inst = TmpInst; - return true; - } - - case ARM::VST3LNdWB_register_Asm_8: - case ARM::VST3LNdWB_register_Asm_16: - case ARM::VST3LNdWB_register_Asm_32: - case ARM::VST3LNqWB_register_Asm_16: - case ARM::VST3LNqWB_register_Asm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(Inst.getOperand(4)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(5)); // CondCode - TmpInst.addOperand(Inst.getOperand(6)); - Inst = TmpInst; - return true; - } - - case ARM::VST4LNdWB_register_Asm_8: - case ARM::VST4LNdWB_register_Asm_16: - case ARM::VST4LNdWB_register_Asm_32: - case ARM::VST4LNqWB_register_Asm_16: - case ARM::VST4LNqWB_register_Asm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(Inst.getOperand(4)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 3)); - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(5)); // CondCode - TmpInst.addOperand(Inst.getOperand(6)); - Inst = TmpInst; - return true; - } - - case ARM::VST1LNdWB_fixed_Asm_8: - case ARM::VST1LNdWB_fixed_Asm_16: - case ARM::VST1LNdWB_fixed_Asm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(MCOperand::createReg(0)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - case ARM::VST2LNdWB_fixed_Asm_8: - case ARM::VST2LNdWB_fixed_Asm_16: - case ARM::VST2LNdWB_fixed_Asm_32: - case ARM::VST2LNqWB_fixed_Asm_16: - case ARM::VST2LNqWB_fixed_Asm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(MCOperand::createReg(0)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - case ARM::VST3LNdWB_fixed_Asm_8: - case ARM::VST3LNdWB_fixed_Asm_16: - case ARM::VST3LNdWB_fixed_Asm_32: - case ARM::VST3LNqWB_fixed_Asm_16: - case ARM::VST3LNqWB_fixed_Asm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(MCOperand::createReg(0)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - case ARM::VST4LNdWB_fixed_Asm_8: - case ARM::VST4LNdWB_fixed_Asm_16: - case ARM::VST4LNdWB_fixed_Asm_32: - case ARM::VST4LNqWB_fixed_Asm_16: - case ARM::VST4LNqWB_fixed_Asm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(MCOperand::createReg(0)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 3)); - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - case ARM::VST1LNdAsm_8: - case ARM::VST1LNdAsm_16: - case ARM::VST1LNdAsm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - case ARM::VST2LNdAsm_8: - case ARM::VST2LNdAsm_16: - case ARM::VST2LNdAsm_32: - case ARM::VST2LNqAsm_16: - case ARM::VST2LNqAsm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - case ARM::VST3LNdAsm_8: - case ARM::VST3LNdAsm_16: - case ARM::VST3LNdAsm_32: - case ARM::VST3LNqAsm_16: - case ARM::VST3LNqAsm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - case ARM::VST4LNdAsm_8: - case ARM::VST4LNdAsm_16: - case ARM::VST4LNdAsm_32: - case ARM::VST4LNqAsm_16: - case ARM::VST4LNqAsm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 3)); - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - // Handle NEON VLD complex aliases. - case ARM::VLD1LNdWB_register_Asm_8: - case ARM::VLD1LNdWB_register_Asm_16: - case ARM::VLD1LNdWB_register_Asm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(Inst.getOperand(4)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd) - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(5)); // CondCode - TmpInst.addOperand(Inst.getOperand(6)); - Inst = TmpInst; - return true; - } - - case ARM::VLD2LNdWB_register_Asm_8: - case ARM::VLD2LNdWB_register_Asm_16: - case ARM::VLD2LNdWB_register_Asm_32: - case ARM::VLD2LNqWB_register_Asm_16: - case ARM::VLD2LNqWB_register_Asm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(Inst.getOperand(4)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd) - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(5)); // CondCode - TmpInst.addOperand(Inst.getOperand(6)); - Inst = TmpInst; - return true; - } - - case ARM::VLD3LNdWB_register_Asm_8: - case ARM::VLD3LNdWB_register_Asm_16: - case ARM::VLD3LNdWB_register_Asm_32: - case ARM::VLD3LNqWB_register_Asm_16: - case ARM::VLD3LNqWB_register_Asm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(Inst.getOperand(4)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd) - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(5)); // CondCode - TmpInst.addOperand(Inst.getOperand(6)); - Inst = TmpInst; - return true; - } - - case ARM::VLD4LNdWB_register_Asm_8: - case ARM::VLD4LNdWB_register_Asm_16: - case ARM::VLD4LNdWB_register_Asm_32: - case ARM::VLD4LNqWB_register_Asm_16: - case ARM::VLD4LNqWB_register_Asm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 3)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(Inst.getOperand(4)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd) - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 3)); - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(5)); // CondCode - TmpInst.addOperand(Inst.getOperand(6)); - Inst = TmpInst; - return true; - } - - case ARM::VLD1LNdWB_fixed_Asm_8: - case ARM::VLD1LNdWB_fixed_Asm_16: - case ARM::VLD1LNdWB_fixed_Asm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(MCOperand::createReg(0)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd) - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - case ARM::VLD2LNdWB_fixed_Asm_8: - case ARM::VLD2LNdWB_fixed_Asm_16: - case ARM::VLD2LNdWB_fixed_Asm_32: - case ARM::VLD2LNqWB_fixed_Asm_16: - case ARM::VLD2LNqWB_fixed_Asm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(MCOperand::createReg(0)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd) - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - case ARM::VLD3LNdWB_fixed_Asm_8: - case ARM::VLD3LNdWB_fixed_Asm_16: - case ARM::VLD3LNdWB_fixed_Asm_32: - case ARM::VLD3LNqWB_fixed_Asm_16: - case ARM::VLD3LNqWB_fixed_Asm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(MCOperand::createReg(0)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd) - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - case ARM::VLD4LNdWB_fixed_Asm_8: - case ARM::VLD4LNdWB_fixed_Asm_16: - case ARM::VLD4LNdWB_fixed_Asm_32: - case ARM::VLD4LNqWB_fixed_Asm_16: - case ARM::VLD4LNqWB_fixed_Asm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 3)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(MCOperand::createReg(0)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd) - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 3)); - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - case ARM::VLD1LNdAsm_8: - case ARM::VLD1LNdAsm_16: - case ARM::VLD1LNdAsm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd) - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - case ARM::VLD2LNdAsm_8: - case ARM::VLD2LNdAsm_16: - case ARM::VLD2LNdAsm_32: - case ARM::VLD2LNqAsm_16: - case ARM::VLD2LNqAsm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd) - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - case ARM::VLD3LNdAsm_8: - case ARM::VLD3LNdAsm_16: - case ARM::VLD3LNdAsm_32: - case ARM::VLD3LNqAsm_16: - case ARM::VLD3LNqAsm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd) - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - case ARM::VLD4LNdAsm_8: - case ARM::VLD4LNdAsm_16: - case ARM::VLD4LNdAsm_32: - case ARM::VLD4LNqAsm_16: - case ARM::VLD4LNqAsm_32: { - MCInst TmpInst; - // Shuffle the operands around so the lane index operand is in the - // right place. - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 3)); - TmpInst.addOperand(Inst.getOperand(2)); // Rn - TmpInst.addOperand(Inst.getOperand(3)); // alignment - TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd) - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 3)); - TmpInst.addOperand(Inst.getOperand(1)); // lane - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - // VLD3DUP single 3-element structure to all lanes instructions. - case ARM::VLD3DUPdAsm_8: - case ARM::VLD3DUPdAsm_16: - case ARM::VLD3DUPdAsm_32: - case ARM::VLD3DUPqAsm_8: - case ARM::VLD3DUPqAsm_16: - case ARM::VLD3DUPqAsm_32: { - MCInst TmpInst; - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(2)); // alignment - TmpInst.addOperand(Inst.getOperand(3)); // CondCode - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - - case ARM::VLD3DUPdWB_fixed_Asm_8: - case ARM::VLD3DUPdWB_fixed_Asm_16: - case ARM::VLD3DUPdWB_fixed_Asm_32: - case ARM::VLD3DUPqWB_fixed_Asm_8: - case ARM::VLD3DUPqWB_fixed_Asm_16: - case ARM::VLD3DUPqWB_fixed_Asm_32: { - MCInst TmpInst; - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn - TmpInst.addOperand(Inst.getOperand(2)); // alignment - TmpInst.addOperand(MCOperand::createReg(0)); // Rm - TmpInst.addOperand(Inst.getOperand(3)); // CondCode - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - - case ARM::VLD3DUPdWB_register_Asm_8: - case ARM::VLD3DUPdWB_register_Asm_16: - case ARM::VLD3DUPdWB_register_Asm_32: - case ARM::VLD3DUPqWB_register_Asm_8: - case ARM::VLD3DUPqWB_register_Asm_16: - case ARM::VLD3DUPqWB_register_Asm_32: { - MCInst TmpInst; - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn - TmpInst.addOperand(Inst.getOperand(2)); // alignment - TmpInst.addOperand(Inst.getOperand(3)); // Rm - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - // VLD3 multiple 3-element structure instructions. - case ARM::VLD3dAsm_8: - case ARM::VLD3dAsm_16: - case ARM::VLD3dAsm_32: - case ARM::VLD3qAsm_8: - case ARM::VLD3qAsm_16: - case ARM::VLD3qAsm_32: { - MCInst TmpInst; - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(2)); // alignment - TmpInst.addOperand(Inst.getOperand(3)); // CondCode - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - - case ARM::VLD3dWB_fixed_Asm_8: - case ARM::VLD3dWB_fixed_Asm_16: - case ARM::VLD3dWB_fixed_Asm_32: - case ARM::VLD3qWB_fixed_Asm_8: - case ARM::VLD3qWB_fixed_Asm_16: - case ARM::VLD3qWB_fixed_Asm_32: { - MCInst TmpInst; - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn - TmpInst.addOperand(Inst.getOperand(2)); // alignment - TmpInst.addOperand(MCOperand::createReg(0)); // Rm - TmpInst.addOperand(Inst.getOperand(3)); // CondCode - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - - case ARM::VLD3dWB_register_Asm_8: - case ARM::VLD3dWB_register_Asm_16: - case ARM::VLD3dWB_register_Asm_32: - case ARM::VLD3qWB_register_Asm_8: - case ARM::VLD3qWB_register_Asm_16: - case ARM::VLD3qWB_register_Asm_32: { - MCInst TmpInst; - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn - TmpInst.addOperand(Inst.getOperand(2)); // alignment - TmpInst.addOperand(Inst.getOperand(3)); // Rm - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - // VLD4DUP single 3-element structure to all lanes instructions. - case ARM::VLD4DUPdAsm_8: - case ARM::VLD4DUPdAsm_16: - case ARM::VLD4DUPdAsm_32: - case ARM::VLD4DUPqAsm_8: - case ARM::VLD4DUPqAsm_16: - case ARM::VLD4DUPqAsm_32: { - MCInst TmpInst; - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 3)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(2)); // alignment - TmpInst.addOperand(Inst.getOperand(3)); // CondCode - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - - case ARM::VLD4DUPdWB_fixed_Asm_8: - case ARM::VLD4DUPdWB_fixed_Asm_16: - case ARM::VLD4DUPdWB_fixed_Asm_32: - case ARM::VLD4DUPqWB_fixed_Asm_8: - case ARM::VLD4DUPqWB_fixed_Asm_16: - case ARM::VLD4DUPqWB_fixed_Asm_32: { - MCInst TmpInst; - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 3)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn - TmpInst.addOperand(Inst.getOperand(2)); // alignment - TmpInst.addOperand(MCOperand::createReg(0)); // Rm - TmpInst.addOperand(Inst.getOperand(3)); // CondCode - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - - case ARM::VLD4DUPdWB_register_Asm_8: - case ARM::VLD4DUPdWB_register_Asm_16: - case ARM::VLD4DUPdWB_register_Asm_32: - case ARM::VLD4DUPqWB_register_Asm_8: - case ARM::VLD4DUPqWB_register_Asm_16: - case ARM::VLD4DUPqWB_register_Asm_32: { - MCInst TmpInst; - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 3)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn - TmpInst.addOperand(Inst.getOperand(2)); // alignment - TmpInst.addOperand(Inst.getOperand(3)); // Rm - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - // VLD4 multiple 4-element structure instructions. - case ARM::VLD4dAsm_8: - case ARM::VLD4dAsm_16: - case ARM::VLD4dAsm_32: - case ARM::VLD4qAsm_8: - case ARM::VLD4qAsm_16: - case ARM::VLD4qAsm_32: { - MCInst TmpInst; - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 3)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(2)); // alignment - TmpInst.addOperand(Inst.getOperand(3)); // CondCode - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - - case ARM::VLD4dWB_fixed_Asm_8: - case ARM::VLD4dWB_fixed_Asm_16: - case ARM::VLD4dWB_fixed_Asm_32: - case ARM::VLD4qWB_fixed_Asm_8: - case ARM::VLD4qWB_fixed_Asm_16: - case ARM::VLD4qWB_fixed_Asm_32: { - MCInst TmpInst; - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 3)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn - TmpInst.addOperand(Inst.getOperand(2)); // alignment - TmpInst.addOperand(MCOperand::createReg(0)); // Rm - TmpInst.addOperand(Inst.getOperand(3)); // CondCode - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - - case ARM::VLD4dWB_register_Asm_8: - case ARM::VLD4dWB_register_Asm_16: - case ARM::VLD4dWB_register_Asm_32: - case ARM::VLD4qWB_register_Asm_8: - case ARM::VLD4qWB_register_Asm_16: - case ARM::VLD4qWB_register_Asm_32: { - MCInst TmpInst; - unsigned Spacing; - TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 3)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn - TmpInst.addOperand(Inst.getOperand(2)); // alignment - TmpInst.addOperand(Inst.getOperand(3)); // Rm - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - // VST3 multiple 3-element structure instructions. - case ARM::VST3dAsm_8: - case ARM::VST3dAsm_16: - case ARM::VST3dAsm_32: - case ARM::VST3qAsm_8: - case ARM::VST3qAsm_16: - case ARM::VST3qAsm_32: { - MCInst TmpInst; - unsigned Spacing; - TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(2)); // alignment - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(Inst.getOperand(3)); // CondCode - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - - case ARM::VST3dWB_fixed_Asm_8: - case ARM::VST3dWB_fixed_Asm_16: - case ARM::VST3dWB_fixed_Asm_32: - case ARM::VST3qWB_fixed_Asm_8: - case ARM::VST3qWB_fixed_Asm_16: - case ARM::VST3qWB_fixed_Asm_32: { - MCInst TmpInst; - unsigned Spacing; - TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn - TmpInst.addOperand(Inst.getOperand(2)); // alignment - TmpInst.addOperand(MCOperand::createReg(0)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(Inst.getOperand(3)); // CondCode - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - - case ARM::VST3dWB_register_Asm_8: - case ARM::VST3dWB_register_Asm_16: - case ARM::VST3dWB_register_Asm_32: - case ARM::VST3qWB_register_Asm_8: - case ARM::VST3qWB_register_Asm_16: - case ARM::VST3qWB_register_Asm_32: { - MCInst TmpInst; - unsigned Spacing; - TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn - TmpInst.addOperand(Inst.getOperand(2)); // alignment - TmpInst.addOperand(Inst.getOperand(3)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - // VST4 multiple 3-element structure instructions. - case ARM::VST4dAsm_8: - case ARM::VST4dAsm_16: - case ARM::VST4dAsm_32: - case ARM::VST4qAsm_8: - case ARM::VST4qAsm_16: - case ARM::VST4qAsm_32: { - MCInst TmpInst; - unsigned Spacing; - TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(2)); // alignment - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 3)); - TmpInst.addOperand(Inst.getOperand(3)); // CondCode - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - - case ARM::VST4dWB_fixed_Asm_8: - case ARM::VST4dWB_fixed_Asm_16: - case ARM::VST4dWB_fixed_Asm_32: - case ARM::VST4qWB_fixed_Asm_8: - case ARM::VST4qWB_fixed_Asm_16: - case ARM::VST4qWB_fixed_Asm_32: { - MCInst TmpInst; - unsigned Spacing; - TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn - TmpInst.addOperand(Inst.getOperand(2)); // alignment - TmpInst.addOperand(MCOperand::createReg(0)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 3)); - TmpInst.addOperand(Inst.getOperand(3)); // CondCode - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - - case ARM::VST4dWB_register_Asm_8: - case ARM::VST4dWB_register_Asm_16: - case ARM::VST4dWB_register_Asm_32: - case ARM::VST4qWB_register_Asm_8: - case ARM::VST4qWB_register_Asm_16: - case ARM::VST4qWB_register_Asm_32: { - MCInst TmpInst; - unsigned Spacing; - TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn - TmpInst.addOperand(Inst.getOperand(2)); // alignment - TmpInst.addOperand(Inst.getOperand(3)); // Rm - TmpInst.addOperand(Inst.getOperand(0)); // Vd - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 2)); - TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() + - Spacing * 3)); - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - - // Handle encoding choice for the shift-immediate instructions. - case ARM::t2LSLri: - case ARM::t2LSRri: - case ARM::t2ASRri: - if (isARMLowRegister(Inst.getOperand(0).getReg()) && - isARMLowRegister(Inst.getOperand(1).getReg()) && - Inst.getOperand(5).getReg() == (inITBlock() ? 0 : ARM::CPSR) && - !HasWideQualifier) { - unsigned NewOpc; - switch (Inst.getOpcode()) { - default: llvm_unreachable("unexpected opcode"); - case ARM::t2LSLri: NewOpc = ARM::tLSLri; break; - case ARM::t2LSRri: NewOpc = ARM::tLSRri; break; - case ARM::t2ASRri: NewOpc = ARM::tASRri; break; - } - // The Thumb1 operands aren't in the same order. Awesome, eh? - MCInst TmpInst; - TmpInst.setOpcode(NewOpc); - TmpInst.addOperand(Inst.getOperand(0)); - TmpInst.addOperand(Inst.getOperand(5)); - TmpInst.addOperand(Inst.getOperand(1)); - TmpInst.addOperand(Inst.getOperand(2)); - TmpInst.addOperand(Inst.getOperand(3)); - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - return false; - - // Handle the Thumb2 mode MOV complex aliases. - case ARM::t2MOVsr: - case ARM::t2MOVSsr: { - // Which instruction to expand to depends on the CCOut operand and - // whether we're in an IT block if the register operands are low - // registers. - bool isNarrow = false; - if (isARMLowRegister(Inst.getOperand(0).getReg()) && - isARMLowRegister(Inst.getOperand(1).getReg()) && - isARMLowRegister(Inst.getOperand(2).getReg()) && - Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() && - inITBlock() == (Inst.getOpcode() == ARM::t2MOVsr) && - !HasWideQualifier) - isNarrow = true; - MCInst TmpInst; - unsigned newOpc; - switch(ARM_AM::getSORegShOp(Inst.getOperand(3).getImm())) { - default: llvm_unreachable("unexpected opcode!"); - case ARM_AM::asr: newOpc = isNarrow ? ARM::tASRrr : ARM::t2ASRrr; break; - case ARM_AM::lsr: newOpc = isNarrow ? ARM::tLSRrr : ARM::t2LSRrr; break; - case ARM_AM::lsl: newOpc = isNarrow ? ARM::tLSLrr : ARM::t2LSLrr; break; - case ARM_AM::ror: newOpc = isNarrow ? ARM::tROR : ARM::t2RORrr; break; - } - TmpInst.setOpcode(newOpc); - TmpInst.addOperand(Inst.getOperand(0)); // Rd - if (isNarrow) - TmpInst.addOperand(MCOperand::createReg( - Inst.getOpcode() == ARM::t2MOVSsr ? ARM::CPSR : 0)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(2)); // Rm - TmpInst.addOperand(Inst.getOperand(4)); // CondCode - TmpInst.addOperand(Inst.getOperand(5)); - if (!isNarrow) - TmpInst.addOperand(MCOperand::createReg( - Inst.getOpcode() == ARM::t2MOVSsr ? ARM::CPSR : 0)); - Inst = TmpInst; - return true; - } - case ARM::t2MOVsi: - case ARM::t2MOVSsi: { - // Which instruction to expand to depends on the CCOut operand and - // whether we're in an IT block if the register operands are low - // registers. - bool isNarrow = false; - if (isARMLowRegister(Inst.getOperand(0).getReg()) && - isARMLowRegister(Inst.getOperand(1).getReg()) && - inITBlock() == (Inst.getOpcode() == ARM::t2MOVsi) && - !HasWideQualifier) - isNarrow = true; - MCInst TmpInst; - unsigned newOpc; - unsigned Shift = ARM_AM::getSORegShOp(Inst.getOperand(2).getImm()); - unsigned Amount = ARM_AM::getSORegOffset(Inst.getOperand(2).getImm()); - bool isMov = false; - // MOV rd, rm, LSL #0 is actually a MOV instruction - if (Shift == ARM_AM::lsl && Amount == 0) { - isMov = true; - // The 16-bit encoding of MOV rd, rm, LSL #N is explicitly encoding T2 of - // MOV (register) in the ARMv8-A and ARMv8-M manuals, and immediate 0 is - // unpredictable in an IT block so the 32-bit encoding T3 has to be used - // instead. - if (inITBlock()) { - isNarrow = false; - } - newOpc = isNarrow ? ARM::tMOVSr : ARM::t2MOVr; - } else { - switch(Shift) { - default: llvm_unreachable("unexpected opcode!"); - case ARM_AM::asr: newOpc = isNarrow ? ARM::tASRri : ARM::t2ASRri; break; - case ARM_AM::lsr: newOpc = isNarrow ? ARM::tLSRri : ARM::t2LSRri; break; - case ARM_AM::lsl: newOpc = isNarrow ? ARM::tLSLri : ARM::t2LSLri; break; - case ARM_AM::ror: newOpc = ARM::t2RORri; isNarrow = false; break; - case ARM_AM::rrx: isNarrow = false; newOpc = ARM::t2RRX; break; - } - } - if (Amount == 32) Amount = 0; - TmpInst.setOpcode(newOpc); - TmpInst.addOperand(Inst.getOperand(0)); // Rd - if (isNarrow && !isMov) - TmpInst.addOperand(MCOperand::createReg( - Inst.getOpcode() == ARM::t2MOVSsi ? ARM::CPSR : 0)); - TmpInst.addOperand(Inst.getOperand(1)); // Rn - if (newOpc != ARM::t2RRX && !isMov) - TmpInst.addOperand(MCOperand::createImm(Amount)); - TmpInst.addOperand(Inst.getOperand(3)); // CondCode - TmpInst.addOperand(Inst.getOperand(4)); - if (!isNarrow) - TmpInst.addOperand(MCOperand::createReg( - Inst.getOpcode() == ARM::t2MOVSsi ? ARM::CPSR : 0)); - Inst = TmpInst; - return true; - } - // Handle the ARM mode MOV complex aliases. - case ARM::ASRr: - case ARM::LSRr: - case ARM::LSLr: - case ARM::RORr: { - ARM_AM::ShiftOpc ShiftTy; - switch(Inst.getOpcode()) { - default: llvm_unreachable("unexpected opcode!"); - case ARM::ASRr: ShiftTy = ARM_AM::asr; break; - case ARM::LSRr: ShiftTy = ARM_AM::lsr; break; - case ARM::LSLr: ShiftTy = ARM_AM::lsl; break; - case ARM::RORr: ShiftTy = ARM_AM::ror; break; - } - unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, 0); - MCInst TmpInst; - TmpInst.setOpcode(ARM::MOVsr); - TmpInst.addOperand(Inst.getOperand(0)); // Rd - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(Inst.getOperand(2)); // Rm - TmpInst.addOperand(MCOperand::createImm(Shifter)); // Shift value and ty - TmpInst.addOperand(Inst.getOperand(3)); // CondCode - TmpInst.addOperand(Inst.getOperand(4)); - TmpInst.addOperand(Inst.getOperand(5)); // cc_out - Inst = TmpInst; - return true; - } - case ARM::ASRi: - case ARM::LSRi: - case ARM::LSLi: - case ARM::RORi: { - ARM_AM::ShiftOpc ShiftTy; - switch(Inst.getOpcode()) { - default: llvm_unreachable("unexpected opcode!"); - case ARM::ASRi: ShiftTy = ARM_AM::asr; break; - case ARM::LSRi: ShiftTy = ARM_AM::lsr; break; - case ARM::LSLi: ShiftTy = ARM_AM::lsl; break; - case ARM::RORi: ShiftTy = ARM_AM::ror; break; - } - // A shift by zero is a plain MOVr, not a MOVsi. - unsigned Amt = Inst.getOperand(2).getImm(); - unsigned Opc = Amt == 0 ? ARM::MOVr : ARM::MOVsi; - // A shift by 32 should be encoded as 0 when permitted - if (Amt == 32 && (ShiftTy == ARM_AM::lsr || ShiftTy == ARM_AM::asr)) - Amt = 0; - unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, Amt); - MCInst TmpInst; - TmpInst.setOpcode(Opc); - TmpInst.addOperand(Inst.getOperand(0)); // Rd - TmpInst.addOperand(Inst.getOperand(1)); // Rn - if (Opc == ARM::MOVsi) - TmpInst.addOperand(MCOperand::createImm(Shifter)); // Shift value and ty - TmpInst.addOperand(Inst.getOperand(3)); // CondCode - TmpInst.addOperand(Inst.getOperand(4)); - TmpInst.addOperand(Inst.getOperand(5)); // cc_out - Inst = TmpInst; - return true; - } - case ARM::RRXi: { - unsigned Shifter = ARM_AM::getSORegOpc(ARM_AM::rrx, 0); - MCInst TmpInst; - TmpInst.setOpcode(ARM::MOVsi); - TmpInst.addOperand(Inst.getOperand(0)); // Rd - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(MCOperand::createImm(Shifter)); // Shift value and ty - TmpInst.addOperand(Inst.getOperand(2)); // CondCode - TmpInst.addOperand(Inst.getOperand(3)); - TmpInst.addOperand(Inst.getOperand(4)); // cc_out - Inst = TmpInst; - return true; - } - case ARM::t2LDMIA_UPD: { - // If this is a load of a single register, then we should use - // a post-indexed LDR instruction instead, per the ARM ARM. - if (Inst.getNumOperands() != 5) - return false; - MCInst TmpInst; - TmpInst.setOpcode(ARM::t2LDR_POST); - TmpInst.addOperand(Inst.getOperand(4)); // Rt - TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(MCOperand::createImm(4)); - TmpInst.addOperand(Inst.getOperand(2)); // CondCode - TmpInst.addOperand(Inst.getOperand(3)); - Inst = TmpInst; - return true; - } - case ARM::t2STMDB_UPD: { - // If this is a store of a single register, then we should use - // a pre-indexed STR instruction instead, per the ARM ARM. - if (Inst.getNumOperands() != 5) - return false; - MCInst TmpInst; - TmpInst.setOpcode(ARM::t2STR_PRE); - TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(4)); // Rt - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(MCOperand::createImm(-4)); - TmpInst.addOperand(Inst.getOperand(2)); // CondCode - TmpInst.addOperand(Inst.getOperand(3)); - Inst = TmpInst; - return true; - } - case ARM::LDMIA_UPD: - // If this is a load of a single register via a 'pop', then we should use - // a post-indexed LDR instruction instead, per the ARM ARM. - if (static_cast<ARMOperand &>(*Operands[0]).getToken() == "pop" && - Inst.getNumOperands() == 5) { - MCInst TmpInst; - TmpInst.setOpcode(ARM::LDR_POST_IMM); - TmpInst.addOperand(Inst.getOperand(4)); // Rt - TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(1)); // Rn - TmpInst.addOperand(MCOperand::createReg(0)); // am2offset - TmpInst.addOperand(MCOperand::createImm(4)); - TmpInst.addOperand(Inst.getOperand(2)); // CondCode - TmpInst.addOperand(Inst.getOperand(3)); - Inst = TmpInst; - return true; - } - break; - case ARM::STMDB_UPD: - // If this is a store of a single register via a 'push', then we should use - // a pre-indexed STR instruction instead, per the ARM ARM. - if (static_cast<ARMOperand &>(*Operands[0]).getToken() == "push" && - Inst.getNumOperands() == 5) { - MCInst TmpInst; - TmpInst.setOpcode(ARM::STR_PRE_IMM); - TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb - TmpInst.addOperand(Inst.getOperand(4)); // Rt - TmpInst.addOperand(Inst.getOperand(1)); // addrmode_imm12 - TmpInst.addOperand(MCOperand::createImm(-4)); - TmpInst.addOperand(Inst.getOperand(2)); // CondCode - TmpInst.addOperand(Inst.getOperand(3)); - Inst = TmpInst; - } - break; - case ARM::t2ADDri12: - // If the immediate fits for encoding T3 (t2ADDri) and the generic "add" - // mnemonic was used (not "addw"), encoding T3 is preferred. - if (static_cast<ARMOperand &>(*Operands[0]).getToken() != "add" || - ARM_AM::getT2SOImmVal(Inst.getOperand(2).getImm()) == -1) - break; - Inst.setOpcode(ARM::t2ADDri); - Inst.addOperand(MCOperand::createReg(0)); // cc_out - break; - case ARM::t2SUBri12: - // If the immediate fits for encoding T3 (t2SUBri) and the generic "sub" - // mnemonic was used (not "subw"), encoding T3 is preferred. - if (static_cast<ARMOperand &>(*Operands[0]).getToken() != "sub" || - ARM_AM::getT2SOImmVal(Inst.getOperand(2).getImm()) == -1) - break; - Inst.setOpcode(ARM::t2SUBri); - Inst.addOperand(MCOperand::createReg(0)); // cc_out - break; - case ARM::tADDi8: - // If the immediate is in the range 0-7, we want tADDi3 iff Rd was - // explicitly specified. From the ARM ARM: "Encoding T1 is preferred - // to encoding T2 if <Rd> is specified and encoding T2 is preferred - // to encoding T1 if <Rd> is omitted." - if ((unsigned)Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) { - Inst.setOpcode(ARM::tADDi3); - return true; - } - break; - case ARM::tSUBi8: - // If the immediate is in the range 0-7, we want tADDi3 iff Rd was - // explicitly specified. From the ARM ARM: "Encoding T1 is preferred - // to encoding T2 if <Rd> is specified and encoding T2 is preferred - // to encoding T1 if <Rd> is omitted." - if ((unsigned)Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) { - Inst.setOpcode(ARM::tSUBi3); - return true; - } - break; - case ARM::t2ADDri: - case ARM::t2SUBri: { - // If the destination and first source operand are the same, and - // the flags are compatible with the current IT status, use encoding T2 - // instead of T3. For compatibility with the system 'as'. Make sure the - // wide encoding wasn't explicit. - if (Inst.getOperand(0).getReg() != Inst.getOperand(1).getReg() || - !isARMLowRegister(Inst.getOperand(0).getReg()) || - (Inst.getOperand(2).isImm() && - (unsigned)Inst.getOperand(2).getImm() > 255) || - Inst.getOperand(5).getReg() != (inITBlock() ? 0 : ARM::CPSR) || - HasWideQualifier) - break; - MCInst TmpInst; - TmpInst.setOpcode(Inst.getOpcode() == ARM::t2ADDri ? - ARM::tADDi8 : ARM::tSUBi8); - TmpInst.addOperand(Inst.getOperand(0)); - TmpInst.addOperand(Inst.getOperand(5)); - TmpInst.addOperand(Inst.getOperand(0)); - TmpInst.addOperand(Inst.getOperand(2)); - TmpInst.addOperand(Inst.getOperand(3)); - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - case ARM::t2ADDrr: { - // If the destination and first source operand are the same, and - // there's no setting of the flags, use encoding T2 instead of T3. - // Note that this is only for ADD, not SUB. This mirrors the system - // 'as' behaviour. Also take advantage of ADD being commutative. - // Make sure the wide encoding wasn't explicit. - bool Swap = false; - auto DestReg = Inst.getOperand(0).getReg(); - bool Transform = DestReg == Inst.getOperand(1).getReg(); - if (!Transform && DestReg == Inst.getOperand(2).getReg()) { - Transform = true; - Swap = true; - } - if (!Transform || - Inst.getOperand(5).getReg() != 0 || - HasWideQualifier) - break; - MCInst TmpInst; - TmpInst.setOpcode(ARM::tADDhirr); - TmpInst.addOperand(Inst.getOperand(0)); - TmpInst.addOperand(Inst.getOperand(0)); - TmpInst.addOperand(Inst.getOperand(Swap ? 1 : 2)); - TmpInst.addOperand(Inst.getOperand(3)); - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - case ARM::tADDrSP: - // If the non-SP source operand and the destination operand are not the - // same, we need to use the 32-bit encoding if it's available. - if (Inst.getOperand(0).getReg() != Inst.getOperand(2).getReg()) { - Inst.setOpcode(ARM::t2ADDrr); - Inst.addOperand(MCOperand::createReg(0)); // cc_out - return true; - } - break; - case ARM::tB: - // A Thumb conditional branch outside of an IT block is a tBcc. - if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock()) { - Inst.setOpcode(ARM::tBcc); - return true; - } - break; - case ARM::t2B: - // A Thumb2 conditional branch outside of an IT block is a t2Bcc. - if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock()){ - Inst.setOpcode(ARM::t2Bcc); - return true; - } - break; - case ARM::t2Bcc: - // If the conditional is AL or we're in an IT block, we really want t2B. - if (Inst.getOperand(1).getImm() == ARMCC::AL || inITBlock()) { - Inst.setOpcode(ARM::t2B); - return true; - } - break; - case ARM::tBcc: - // If the conditional is AL, we really want tB. - if (Inst.getOperand(1).getImm() == ARMCC::AL) { - Inst.setOpcode(ARM::tB); - return true; - } - break; - case ARM::tLDMIA: { - // If the register list contains any high registers, or if the writeback - // doesn't match what tLDMIA can do, we need to use the 32-bit encoding - // instead if we're in Thumb2. Otherwise, this should have generated - // an error in validateInstruction(). - unsigned Rn = Inst.getOperand(0).getReg(); - bool hasWritebackToken = - (static_cast<ARMOperand &>(*Operands[3]).isToken() && - static_cast<ARMOperand &>(*Operands[3]).getToken() == "!"); - bool listContainsBase; - if (checkLowRegisterList(Inst, 3, Rn, 0, listContainsBase) || - (!listContainsBase && !hasWritebackToken) || - (listContainsBase && hasWritebackToken)) { - // 16-bit encoding isn't sufficient. Switch to the 32-bit version. - assert(isThumbTwo()); - Inst.setOpcode(hasWritebackToken ? ARM::t2LDMIA_UPD : ARM::t2LDMIA); - // If we're switching to the updating version, we need to insert - // the writeback tied operand. - if (hasWritebackToken) - Inst.insert(Inst.begin(), - MCOperand::createReg(Inst.getOperand(0).getReg())); - return true; - } - break; - } - case ARM::tSTMIA_UPD: { - // If the register list contains any high registers, we need to use - // the 32-bit encoding instead if we're in Thumb2. Otherwise, this - // should have generated an error in validateInstruction(). - unsigned Rn = Inst.getOperand(0).getReg(); - bool listContainsBase; - if (checkLowRegisterList(Inst, 4, Rn, 0, listContainsBase)) { - // 16-bit encoding isn't sufficient. Switch to the 32-bit version. - assert(isThumbTwo()); - Inst.setOpcode(ARM::t2STMIA_UPD); - return true; - } - break; - } - case ARM::tPOP: { - bool listContainsBase; - // If the register list contains any high registers, we need to use - // the 32-bit encoding instead if we're in Thumb2. Otherwise, this - // should have generated an error in validateInstruction(). - if (!checkLowRegisterList(Inst, 2, 0, ARM::PC, listContainsBase)) - return false; - assert(isThumbTwo()); - Inst.setOpcode(ARM::t2LDMIA_UPD); - // Add the base register and writeback operands. - Inst.insert(Inst.begin(), MCOperand::createReg(ARM::SP)); - Inst.insert(Inst.begin(), MCOperand::createReg(ARM::SP)); - return true; - } - case ARM::tPUSH: { - bool listContainsBase; - if (!checkLowRegisterList(Inst, 2, 0, ARM::LR, listContainsBase)) - return false; - assert(isThumbTwo()); - Inst.setOpcode(ARM::t2STMDB_UPD); - // Add the base register and writeback operands. - Inst.insert(Inst.begin(), MCOperand::createReg(ARM::SP)); - Inst.insert(Inst.begin(), MCOperand::createReg(ARM::SP)); - return true; - } - case ARM::t2MOVi: - // If we can use the 16-bit encoding and the user didn't explicitly - // request the 32-bit variant, transform it here. - if (isARMLowRegister(Inst.getOperand(0).getReg()) && - (Inst.getOperand(1).isImm() && - (unsigned)Inst.getOperand(1).getImm() <= 255) && - Inst.getOperand(4).getReg() == (inITBlock() ? 0 : ARM::CPSR) && - !HasWideQualifier) { - // The operands aren't in the same order for tMOVi8... - MCInst TmpInst; - TmpInst.setOpcode(ARM::tMOVi8); - TmpInst.addOperand(Inst.getOperand(0)); - TmpInst.addOperand(Inst.getOperand(4)); - TmpInst.addOperand(Inst.getOperand(1)); - TmpInst.addOperand(Inst.getOperand(2)); - TmpInst.addOperand(Inst.getOperand(3)); - Inst = TmpInst; - return true; - } - break; - - case ARM::t2MOVr: - // If we can use the 16-bit encoding and the user didn't explicitly - // request the 32-bit variant, transform it here. - if (isARMLowRegister(Inst.getOperand(0).getReg()) && - isARMLowRegister(Inst.getOperand(1).getReg()) && - Inst.getOperand(2).getImm() == ARMCC::AL && - Inst.getOperand(4).getReg() == ARM::CPSR && - !HasWideQualifier) { - // The operands aren't the same for tMOV[S]r... (no cc_out) - MCInst TmpInst; - TmpInst.setOpcode(Inst.getOperand(4).getReg() ? ARM::tMOVSr : ARM::tMOVr); - TmpInst.addOperand(Inst.getOperand(0)); - TmpInst.addOperand(Inst.getOperand(1)); - TmpInst.addOperand(Inst.getOperand(2)); - TmpInst.addOperand(Inst.getOperand(3)); - Inst = TmpInst; - return true; - } - break; - - case ARM::t2SXTH: - case ARM::t2SXTB: - case ARM::t2UXTH: - case ARM::t2UXTB: - // If we can use the 16-bit encoding and the user didn't explicitly - // request the 32-bit variant, transform it here. - if (isARMLowRegister(Inst.getOperand(0).getReg()) && - isARMLowRegister(Inst.getOperand(1).getReg()) && - Inst.getOperand(2).getImm() == 0 && - !HasWideQualifier) { - unsigned NewOpc; - switch (Inst.getOpcode()) { - default: llvm_unreachable("Illegal opcode!"); - case ARM::t2SXTH: NewOpc = ARM::tSXTH; break; - case ARM::t2SXTB: NewOpc = ARM::tSXTB; break; - case ARM::t2UXTH: NewOpc = ARM::tUXTH; break; - case ARM::t2UXTB: NewOpc = ARM::tUXTB; break; - } - // The operands aren't the same for thumb1 (no rotate operand). - MCInst TmpInst; - TmpInst.setOpcode(NewOpc); - TmpInst.addOperand(Inst.getOperand(0)); - TmpInst.addOperand(Inst.getOperand(1)); - TmpInst.addOperand(Inst.getOperand(3)); - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - break; - - case ARM::MOVsi: { - ARM_AM::ShiftOpc SOpc = ARM_AM::getSORegShOp(Inst.getOperand(2).getImm()); - // rrx shifts and asr/lsr of #32 is encoded as 0 - if (SOpc == ARM_AM::rrx || SOpc == ARM_AM::asr || SOpc == ARM_AM::lsr) - return false; - if (ARM_AM::getSORegOffset(Inst.getOperand(2).getImm()) == 0) { - // Shifting by zero is accepted as a vanilla 'MOVr' - MCInst TmpInst; - TmpInst.setOpcode(ARM::MOVr); - TmpInst.addOperand(Inst.getOperand(0)); - TmpInst.addOperand(Inst.getOperand(1)); - TmpInst.addOperand(Inst.getOperand(3)); - TmpInst.addOperand(Inst.getOperand(4)); - TmpInst.addOperand(Inst.getOperand(5)); - Inst = TmpInst; - return true; - } - return false; - } - case ARM::ANDrsi: - case ARM::ORRrsi: - case ARM::EORrsi: - case ARM::BICrsi: - case ARM::SUBrsi: - case ARM::ADDrsi: { - unsigned newOpc; - ARM_AM::ShiftOpc SOpc = ARM_AM::getSORegShOp(Inst.getOperand(3).getImm()); - if (SOpc == ARM_AM::rrx) return false; - switch (Inst.getOpcode()) { - default: llvm_unreachable("unexpected opcode!"); - case ARM::ANDrsi: newOpc = ARM::ANDrr; break; - case ARM::ORRrsi: newOpc = ARM::ORRrr; break; - case ARM::EORrsi: newOpc = ARM::EORrr; break; - case ARM::BICrsi: newOpc = ARM::BICrr; break; - case ARM::SUBrsi: newOpc = ARM::SUBrr; break; - case ARM::ADDrsi: newOpc = ARM::ADDrr; break; - } - // If the shift is by zero, use the non-shifted instruction definition. - // The exception is for right shifts, where 0 == 32 - if (ARM_AM::getSORegOffset(Inst.getOperand(3).getImm()) == 0 && - !(SOpc == ARM_AM::lsr || SOpc == ARM_AM::asr)) { - MCInst TmpInst; - TmpInst.setOpcode(newOpc); - TmpInst.addOperand(Inst.getOperand(0)); - TmpInst.addOperand(Inst.getOperand(1)); - TmpInst.addOperand(Inst.getOperand(2)); - TmpInst.addOperand(Inst.getOperand(4)); - TmpInst.addOperand(Inst.getOperand(5)); - TmpInst.addOperand(Inst.getOperand(6)); - Inst = TmpInst; - return true; - } - return false; - } - case ARM::ITasm: - case ARM::t2IT: { - MCOperand &MO = Inst.getOperand(1); - unsigned Mask = MO.getImm(); - ARMCC::CondCodes Cond = ARMCC::CondCodes(Inst.getOperand(0).getImm()); - - // Set up the IT block state according to the IT instruction we just - // matched. - assert(!inITBlock() && "nested IT blocks?!"); - startExplicitITBlock(Cond, Mask); - MO.setImm(getITMaskEncoding()); - break; - } - case ARM::t2LSLrr: - case ARM::t2LSRrr: - case ARM::t2ASRrr: - case ARM::t2SBCrr: - case ARM::t2RORrr: - case ARM::t2BICrr: - // Assemblers should use the narrow encodings of these instructions when permissible. - if ((isARMLowRegister(Inst.getOperand(1).getReg()) && - isARMLowRegister(Inst.getOperand(2).getReg())) && - Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() && - Inst.getOperand(5).getReg() == (inITBlock() ? 0 : ARM::CPSR) && - !HasWideQualifier) { - unsigned NewOpc; - switch (Inst.getOpcode()) { - default: llvm_unreachable("unexpected opcode"); - case ARM::t2LSLrr: NewOpc = ARM::tLSLrr; break; - case ARM::t2LSRrr: NewOpc = ARM::tLSRrr; break; - case ARM::t2ASRrr: NewOpc = ARM::tASRrr; break; - case ARM::t2SBCrr: NewOpc = ARM::tSBC; break; - case ARM::t2RORrr: NewOpc = ARM::tROR; break; - case ARM::t2BICrr: NewOpc = ARM::tBIC; break; - } - MCInst TmpInst; - TmpInst.setOpcode(NewOpc); - TmpInst.addOperand(Inst.getOperand(0)); - TmpInst.addOperand(Inst.getOperand(5)); - TmpInst.addOperand(Inst.getOperand(1)); - TmpInst.addOperand(Inst.getOperand(2)); - TmpInst.addOperand(Inst.getOperand(3)); - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - return false; - - case ARM::t2ANDrr: - case ARM::t2EORrr: - case ARM::t2ADCrr: - case ARM::t2ORRrr: - // Assemblers should use the narrow encodings of these instructions when permissible. - // These instructions are special in that they are commutable, so shorter encodings - // are available more often. - if ((isARMLowRegister(Inst.getOperand(1).getReg()) && - isARMLowRegister(Inst.getOperand(2).getReg())) && - (Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() || - Inst.getOperand(0).getReg() == Inst.getOperand(2).getReg()) && - Inst.getOperand(5).getReg() == (inITBlock() ? 0 : ARM::CPSR) && - !HasWideQualifier) { - unsigned NewOpc; - switch (Inst.getOpcode()) { - default: llvm_unreachable("unexpected opcode"); - case ARM::t2ADCrr: NewOpc = ARM::tADC; break; - case ARM::t2ANDrr: NewOpc = ARM::tAND; break; - case ARM::t2EORrr: NewOpc = ARM::tEOR; break; - case ARM::t2ORRrr: NewOpc = ARM::tORR; break; - } - MCInst TmpInst; - TmpInst.setOpcode(NewOpc); - TmpInst.addOperand(Inst.getOperand(0)); - TmpInst.addOperand(Inst.getOperand(5)); - if (Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg()) { - TmpInst.addOperand(Inst.getOperand(1)); - TmpInst.addOperand(Inst.getOperand(2)); - } else { - TmpInst.addOperand(Inst.getOperand(2)); - TmpInst.addOperand(Inst.getOperand(1)); - } - TmpInst.addOperand(Inst.getOperand(3)); - TmpInst.addOperand(Inst.getOperand(4)); - Inst = TmpInst; - return true; - } - return false; - } - return false; -} - -unsigned ARMAsmParser::checkTargetMatchPredicate(MCInst &Inst) { - // 16-bit thumb arithmetic instructions either require or preclude the 'S' - // suffix depending on whether they're in an IT block or not. - unsigned Opc = Inst.getOpcode(); - const MCInstrDesc &MCID = MII.get(Opc); - if (MCID.TSFlags & ARMII::ThumbArithFlagSetting) { - assert(MCID.hasOptionalDef() && - "optionally flag setting instruction missing optional def operand"); - assert(MCID.NumOperands == Inst.getNumOperands() && - "operand count mismatch!"); - // Find the optional-def operand (cc_out). - unsigned OpNo; - for (OpNo = 0; - !MCID.OpInfo[OpNo].isOptionalDef() && OpNo < MCID.NumOperands; - ++OpNo) - ; - // If we're parsing Thumb1, reject it completely. - if (isThumbOne() && Inst.getOperand(OpNo).getReg() != ARM::CPSR) - return Match_RequiresFlagSetting; - // If we're parsing Thumb2, which form is legal depends on whether we're - // in an IT block. - if (isThumbTwo() && Inst.getOperand(OpNo).getReg() != ARM::CPSR && - !inITBlock()) - return Match_RequiresITBlock; - if (isThumbTwo() && Inst.getOperand(OpNo).getReg() == ARM::CPSR && - inITBlock()) - return Match_RequiresNotITBlock; - // LSL with zero immediate is not allowed in an IT block - if (Opc == ARM::tLSLri && Inst.getOperand(3).getImm() == 0 && inITBlock()) - return Match_RequiresNotITBlock; - } else if (isThumbOne()) { - // Some high-register supporting Thumb1 encodings only allow both registers - // to be from r0-r7 when in Thumb2. - if (Opc == ARM::tADDhirr && !hasV6MOps() && - isARMLowRegister(Inst.getOperand(1).getReg()) && - isARMLowRegister(Inst.getOperand(2).getReg())) - return Match_RequiresThumb2; - // Others only require ARMv6 or later. - else if (Opc == ARM::tMOVr && !hasV6Ops() && - isARMLowRegister(Inst.getOperand(0).getReg()) && - isARMLowRegister(Inst.getOperand(1).getReg())) - return Match_RequiresV6; - } - - // Before ARMv8 the rules for when SP is allowed in t2MOVr are more complex - // than the loop below can handle, so it uses the GPRnopc register class and - // we do SP handling here. - if (Opc == ARM::t2MOVr && !hasV8Ops()) - { - // SP as both source and destination is not allowed - if (Inst.getOperand(0).getReg() == ARM::SP && - Inst.getOperand(1).getReg() == ARM::SP) - return Match_RequiresV8; - // When flags-setting SP as either source or destination is not allowed - if (Inst.getOperand(4).getReg() == ARM::CPSR && - (Inst.getOperand(0).getReg() == ARM::SP || - Inst.getOperand(1).getReg() == ARM::SP)) - return Match_RequiresV8; - } - - // Use of SP for VMRS/VMSR is only allowed in ARM mode with the exception of - // ARMv8-A. - if ((Inst.getOpcode() == ARM::VMRS || Inst.getOpcode() == ARM::VMSR) && - Inst.getOperand(0).getReg() == ARM::SP && (isThumb() && !hasV8Ops())) - return Match_InvalidOperand; - - for (unsigned I = 0; I < MCID.NumOperands; ++I) - if (MCID.OpInfo[I].RegClass == ARM::rGPRRegClassID) { - // rGPRRegClass excludes PC, and also excluded SP before ARMv8 - if ((Inst.getOperand(I).getReg() == ARM::SP) && !hasV8Ops()) - return Match_RequiresV8; - else if (Inst.getOperand(I).getReg() == ARM::PC) - return Match_InvalidOperand; - } - - return Match_Success; -} - -namespace llvm { - -template <> inline bool IsCPSRDead<MCInst>(const MCInst *Instr) { - return true; // In an assembly source, no need to second-guess -} - -} // end namespace llvm - -// Returns true if Inst is unpredictable if it is in and IT block, but is not -// the last instruction in the block. -bool ARMAsmParser::isITBlockTerminator(MCInst &Inst) const { - const MCInstrDesc &MCID = MII.get(Inst.getOpcode()); - - // All branch & call instructions terminate IT blocks with the exception of - // SVC. - if (MCID.isTerminator() || (MCID.isCall() && Inst.getOpcode() != ARM::tSVC) || - MCID.isReturn() || MCID.isBranch() || MCID.isIndirectBranch()) - return true; - - // Any arithmetic instruction which writes to the PC also terminates the IT - // block. - if (MCID.hasDefOfPhysReg(Inst, ARM::PC, *MRI)) - return true; - - return false; -} - -unsigned ARMAsmParser::MatchInstruction(OperandVector &Operands, MCInst &Inst, - SmallVectorImpl<NearMissInfo> &NearMisses, - bool MatchingInlineAsm, - bool &EmitInITBlock, - MCStreamer &Out) { - // If we can't use an implicit IT block here, just match as normal. - if (inExplicitITBlock() || !isThumbTwo() || !useImplicitITThumb()) - return MatchInstructionImpl(Operands, Inst, &NearMisses, MatchingInlineAsm); - - // Try to match the instruction in an extension of the current IT block (if - // there is one). - if (inImplicitITBlock()) { - extendImplicitITBlock(ITState.Cond); - if (MatchInstructionImpl(Operands, Inst, nullptr, MatchingInlineAsm) == - Match_Success) { - // The match succeded, but we still have to check that the instruction is - // valid in this implicit IT block. - const MCInstrDesc &MCID = MII.get(Inst.getOpcode()); - if (MCID.isPredicable()) { - ARMCC::CondCodes InstCond = - (ARMCC::CondCodes)Inst.getOperand(MCID.findFirstPredOperandIdx()) - .getImm(); - ARMCC::CondCodes ITCond = currentITCond(); - if (InstCond == ITCond) { - EmitInITBlock = true; - return Match_Success; - } else if (InstCond == ARMCC::getOppositeCondition(ITCond)) { - invertCurrentITCondition(); - EmitInITBlock = true; - return Match_Success; - } - } - } - rewindImplicitITPosition(); - } - - // Finish the current IT block, and try to match outside any IT block. - flushPendingInstructions(Out); - unsigned PlainMatchResult = - MatchInstructionImpl(Operands, Inst, &NearMisses, MatchingInlineAsm); - if (PlainMatchResult == Match_Success) { - const MCInstrDesc &MCID = MII.get(Inst.getOpcode()); - if (MCID.isPredicable()) { - ARMCC::CondCodes InstCond = - (ARMCC::CondCodes)Inst.getOperand(MCID.findFirstPredOperandIdx()) - .getImm(); - // Some forms of the branch instruction have their own condition code - // fields, so can be conditionally executed without an IT block. - if (Inst.getOpcode() == ARM::tBcc || Inst.getOpcode() == ARM::t2Bcc) { - EmitInITBlock = false; - return Match_Success; - } - if (InstCond == ARMCC::AL) { - EmitInITBlock = false; - return Match_Success; - } - } else { - EmitInITBlock = false; - return Match_Success; - } - } - - // Try to match in a new IT block. The matcher doesn't check the actual - // condition, so we create an IT block with a dummy condition, and fix it up - // once we know the actual condition. - startImplicitITBlock(); - if (MatchInstructionImpl(Operands, Inst, nullptr, MatchingInlineAsm) == - Match_Success) { - const MCInstrDesc &MCID = MII.get(Inst.getOpcode()); - if (MCID.isPredicable()) { - ITState.Cond = - (ARMCC::CondCodes)Inst.getOperand(MCID.findFirstPredOperandIdx()) - .getImm(); - EmitInITBlock = true; - return Match_Success; - } - } - discardImplicitITBlock(); - - // If none of these succeed, return the error we got when trying to match - // outside any IT blocks. - EmitInITBlock = false; - return PlainMatchResult; -} - -static std::string ARMMnemonicSpellCheck(StringRef S, uint64_t FBS, - unsigned VariantID = 0); - -static const char *getSubtargetFeatureName(uint64_t Val); -bool ARMAsmParser::MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode, - OperandVector &Operands, - MCStreamer &Out, uint64_t &ErrorInfo, - bool MatchingInlineAsm) { - MCInst Inst; - unsigned MatchResult; - bool PendConditionalInstruction = false; - - SmallVector<NearMissInfo, 4> NearMisses; - MatchResult = MatchInstruction(Operands, Inst, NearMisses, MatchingInlineAsm, - PendConditionalInstruction, Out); - - switch (MatchResult) { - case Match_Success: - LLVM_DEBUG(dbgs() << "Parsed as: "; - Inst.dump_pretty(dbgs(), MII.getName(Inst.getOpcode())); - dbgs() << "\n"); - - // Context sensitive operand constraints aren't handled by the matcher, - // so check them here. - if (validateInstruction(Inst, Operands)) { - // Still progress the IT block, otherwise one wrong condition causes - // nasty cascading errors. - forwardITPosition(); - return true; - } - - { // processInstruction() updates inITBlock state, we need to save it away - bool wasInITBlock = inITBlock(); - - // Some instructions need post-processing to, for example, tweak which - // encoding is selected. Loop on it while changes happen so the - // individual transformations can chain off each other. E.g., - // tPOP(r8)->t2LDMIA_UPD(sp,r8)->t2STR_POST(sp,r8) - while (processInstruction(Inst, Operands, Out)) - LLVM_DEBUG(dbgs() << "Changed to: "; - Inst.dump_pretty(dbgs(), MII.getName(Inst.getOpcode())); - dbgs() << "\n"); - - // Only after the instruction is fully processed, we can validate it - if (wasInITBlock && hasV8Ops() && isThumb() && - !isV8EligibleForIT(&Inst)) { - Warning(IDLoc, "deprecated instruction in IT block"); - } - } - - // Only move forward at the very end so that everything in validate - // and process gets a consistent answer about whether we're in an IT - // block. - forwardITPosition(); - - // ITasm is an ARM mode pseudo-instruction that just sets the ITblock and - // doesn't actually encode. - if (Inst.getOpcode() == ARM::ITasm) - return false; - - Inst.setLoc(IDLoc); - if (PendConditionalInstruction) { - PendingConditionalInsts.push_back(Inst); - if (isITBlockFull() || isITBlockTerminator(Inst)) - flushPendingInstructions(Out); - } else { - Out.EmitInstruction(Inst, getSTI()); - } - return false; - case Match_NearMisses: - ReportNearMisses(NearMisses, IDLoc, Operands); - return true; - case Match_MnemonicFail: { - uint64_t FBS = ComputeAvailableFeatures(getSTI().getFeatureBits()); - std::string Suggestion = ARMMnemonicSpellCheck( - ((ARMOperand &)*Operands[0]).getToken(), FBS); - return Error(IDLoc, "invalid instruction" + Suggestion, - ((ARMOperand &)*Operands[0]).getLocRange()); - } - } - - llvm_unreachable("Implement any new match types added!"); -} - -/// parseDirective parses the arm specific directives -bool ARMAsmParser::ParseDirective(AsmToken DirectiveID) { - const MCObjectFileInfo::Environment Format = - getContext().getObjectFileInfo()->getObjectFileType(); - bool IsMachO = Format == MCObjectFileInfo::IsMachO; - bool IsCOFF = Format == MCObjectFileInfo::IsCOFF; - - StringRef IDVal = DirectiveID.getIdentifier(); - if (IDVal == ".word") - parseLiteralValues(4, DirectiveID.getLoc()); - else if (IDVal == ".short" || IDVal == ".hword") - parseLiteralValues(2, DirectiveID.getLoc()); - else if (IDVal == ".thumb") - parseDirectiveThumb(DirectiveID.getLoc()); - else if (IDVal == ".arm") - parseDirectiveARM(DirectiveID.getLoc()); - else if (IDVal == ".thumb_func") - parseDirectiveThumbFunc(DirectiveID.getLoc()); - else if (IDVal == ".code") - parseDirectiveCode(DirectiveID.getLoc()); - else if (IDVal == ".syntax") - parseDirectiveSyntax(DirectiveID.getLoc()); - else if (IDVal == ".unreq") - parseDirectiveUnreq(DirectiveID.getLoc()); - else if (IDVal == ".fnend") - parseDirectiveFnEnd(DirectiveID.getLoc()); - else if (IDVal == ".cantunwind") - parseDirectiveCantUnwind(DirectiveID.getLoc()); - else if (IDVal == ".personality") - parseDirectivePersonality(DirectiveID.getLoc()); - else if (IDVal == ".handlerdata") - parseDirectiveHandlerData(DirectiveID.getLoc()); - else if (IDVal == ".setfp") - parseDirectiveSetFP(DirectiveID.getLoc()); - else if (IDVal == ".pad") - parseDirectivePad(DirectiveID.getLoc()); - else if (IDVal == ".save") - parseDirectiveRegSave(DirectiveID.getLoc(), false); - else if (IDVal == ".vsave") - parseDirectiveRegSave(DirectiveID.getLoc(), true); - else if (IDVal == ".ltorg" || IDVal == ".pool") - parseDirectiveLtorg(DirectiveID.getLoc()); - else if (IDVal == ".even") - parseDirectiveEven(DirectiveID.getLoc()); - else if (IDVal == ".personalityindex") - parseDirectivePersonalityIndex(DirectiveID.getLoc()); - else if (IDVal == ".unwind_raw") - parseDirectiveUnwindRaw(DirectiveID.getLoc()); - else if (IDVal == ".movsp") - parseDirectiveMovSP(DirectiveID.getLoc()); - else if (IDVal == ".arch_extension") - parseDirectiveArchExtension(DirectiveID.getLoc()); - else if (IDVal == ".align") - return parseDirectiveAlign(DirectiveID.getLoc()); // Use Generic on failure. - else if (IDVal == ".thumb_set") - parseDirectiveThumbSet(DirectiveID.getLoc()); - else if (IDVal == ".inst") - parseDirectiveInst(DirectiveID.getLoc()); - else if (IDVal == ".inst.n") - parseDirectiveInst(DirectiveID.getLoc(), 'n'); - else if (IDVal == ".inst.w") - parseDirectiveInst(DirectiveID.getLoc(), 'w'); - else if (!IsMachO && !IsCOFF) { - if (IDVal == ".arch") - parseDirectiveArch(DirectiveID.getLoc()); - else if (IDVal == ".cpu") - parseDirectiveCPU(DirectiveID.getLoc()); - else if (IDVal == ".eabi_attribute") - parseDirectiveEabiAttr(DirectiveID.getLoc()); - else if (IDVal == ".fpu") - parseDirectiveFPU(DirectiveID.getLoc()); - else if (IDVal == ".fnstart") - parseDirectiveFnStart(DirectiveID.getLoc()); - else if (IDVal == ".object_arch") - parseDirectiveObjectArch(DirectiveID.getLoc()); - else if (IDVal == ".tlsdescseq") - parseDirectiveTLSDescSeq(DirectiveID.getLoc()); - else - return true; - } else - return true; - return false; -} - -/// parseLiteralValues -/// ::= .hword expression [, expression]* -/// ::= .short expression [, expression]* -/// ::= .word expression [, expression]* -bool ARMAsmParser::parseLiteralValues(unsigned Size, SMLoc L) { - auto parseOne = [&]() -> bool { - const MCExpr *Value; - if (getParser().parseExpression(Value)) - return true; - getParser().getStreamer().EmitValue(Value, Size, L); - return false; - }; - return (parseMany(parseOne)); -} - -/// parseDirectiveThumb -/// ::= .thumb -bool ARMAsmParser::parseDirectiveThumb(SMLoc L) { - if (parseToken(AsmToken::EndOfStatement, "unexpected token in directive") || - check(!hasThumb(), L, "target does not support Thumb mode")) - return true; - - if (!isThumb()) - SwitchMode(); - - getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16); - return false; -} - -/// parseDirectiveARM -/// ::= .arm -bool ARMAsmParser::parseDirectiveARM(SMLoc L) { - if (parseToken(AsmToken::EndOfStatement, "unexpected token in directive") || - check(!hasARM(), L, "target does not support ARM mode")) - return true; - - if (isThumb()) - SwitchMode(); - getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32); - return false; -} - -void ARMAsmParser::doBeforeLabelEmit(MCSymbol *Symbol) { - // We need to flush the current implicit IT block on a label, because it is - // not legal to branch into an IT block. - flushPendingInstructions(getStreamer()); -} - -void ARMAsmParser::onLabelParsed(MCSymbol *Symbol) { - if (NextSymbolIsThumb) { - getParser().getStreamer().EmitThumbFunc(Symbol); - NextSymbolIsThumb = false; - } -} - -/// parseDirectiveThumbFunc -/// ::= .thumbfunc symbol_name -bool ARMAsmParser::parseDirectiveThumbFunc(SMLoc L) { - MCAsmParser &Parser = getParser(); - const auto Format = getContext().getObjectFileInfo()->getObjectFileType(); - bool IsMachO = Format == MCObjectFileInfo::IsMachO; - - // Darwin asm has (optionally) function name after .thumb_func direction - // ELF doesn't - - if (IsMachO) { - if (Parser.getTok().is(AsmToken::Identifier) || - Parser.getTok().is(AsmToken::String)) { - MCSymbol *Func = getParser().getContext().getOrCreateSymbol( - Parser.getTok().getIdentifier()); - getParser().getStreamer().EmitThumbFunc(Func); - Parser.Lex(); - if (parseToken(AsmToken::EndOfStatement, - "unexpected token in '.thumb_func' directive")) - return true; - return false; - } - } - - if (parseToken(AsmToken::EndOfStatement, - "unexpected token in '.thumb_func' directive")) - return true; - - NextSymbolIsThumb = true; - return false; -} - -/// parseDirectiveSyntax -/// ::= .syntax unified | divided -bool ARMAsmParser::parseDirectiveSyntax(SMLoc L) { - MCAsmParser &Parser = getParser(); - const AsmToken &Tok = Parser.getTok(); - if (Tok.isNot(AsmToken::Identifier)) { - Error(L, "unexpected token in .syntax directive"); - return false; - } - - StringRef Mode = Tok.getString(); - Parser.Lex(); - if (check(Mode == "divided" || Mode == "DIVIDED", L, - "'.syntax divided' arm assembly not supported") || - check(Mode != "unified" && Mode != "UNIFIED", L, - "unrecognized syntax mode in .syntax directive") || - parseToken(AsmToken::EndOfStatement, "unexpected token in directive")) - return true; - - // TODO tell the MC streamer the mode - // getParser().getStreamer().Emit???(); - return false; -} - -/// parseDirectiveCode -/// ::= .code 16 | 32 -bool ARMAsmParser::parseDirectiveCode(SMLoc L) { - MCAsmParser &Parser = getParser(); - const AsmToken &Tok = Parser.getTok(); - if (Tok.isNot(AsmToken::Integer)) - return Error(L, "unexpected token in .code directive"); - int64_t Val = Parser.getTok().getIntVal(); - if (Val != 16 && Val != 32) { - Error(L, "invalid operand to .code directive"); - return false; - } - Parser.Lex(); - - if (parseToken(AsmToken::EndOfStatement, "unexpected token in directive")) - return true; - - if (Val == 16) { - if (!hasThumb()) - return Error(L, "target does not support Thumb mode"); - - if (!isThumb()) - SwitchMode(); - getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16); - } else { - if (!hasARM()) - return Error(L, "target does not support ARM mode"); - - if (isThumb()) - SwitchMode(); - getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32); - } - - return false; -} - -/// parseDirectiveReq -/// ::= name .req registername -bool ARMAsmParser::parseDirectiveReq(StringRef Name, SMLoc L) { - MCAsmParser &Parser = getParser(); - Parser.Lex(); // Eat the '.req' token. - unsigned Reg; - SMLoc SRegLoc, ERegLoc; - if (check(ParseRegister(Reg, SRegLoc, ERegLoc), SRegLoc, - "register name expected") || - parseToken(AsmToken::EndOfStatement, - "unexpected input in .req directive.")) - return true; - - if (RegisterReqs.insert(std::make_pair(Name, Reg)).first->second != Reg) - return Error(SRegLoc, - "redefinition of '" + Name + "' does not match original."); - - return false; -} - -/// parseDirectiveUneq -/// ::= .unreq registername -bool ARMAsmParser::parseDirectiveUnreq(SMLoc L) { - MCAsmParser &Parser = getParser(); - if (Parser.getTok().isNot(AsmToken::Identifier)) - return Error(L, "unexpected input in .unreq directive."); - RegisterReqs.erase(Parser.getTok().getIdentifier().lower()); - Parser.Lex(); // Eat the identifier. - if (parseToken(AsmToken::EndOfStatement, - "unexpected input in '.unreq' directive")) - return true; - return false; -} - -// After changing arch/CPU, try to put the ARM/Thumb mode back to what it was -// before, if supported by the new target, or emit mapping symbols for the mode -// switch. -void ARMAsmParser::FixModeAfterArchChange(bool WasThumb, SMLoc Loc) { - if (WasThumb != isThumb()) { - if (WasThumb && hasThumb()) { - // Stay in Thumb mode - SwitchMode(); - } else if (!WasThumb && hasARM()) { - // Stay in ARM mode - SwitchMode(); - } else { - // Mode switch forced, because the new arch doesn't support the old mode. - getParser().getStreamer().EmitAssemblerFlag(isThumb() ? MCAF_Code16 - : MCAF_Code32); - // Warn about the implcit mode switch. GAS does not switch modes here, - // but instead stays in the old mode, reporting an error on any following - // instructions as the mode does not exist on the target. - Warning(Loc, Twine("new target does not support ") + - (WasThumb ? "thumb" : "arm") + " mode, switching to " + - (!WasThumb ? "thumb" : "arm") + " mode"); - } - } -} - -/// parseDirectiveArch -/// ::= .arch token -bool ARMAsmParser::parseDirectiveArch(SMLoc L) { - StringRef Arch = getParser().parseStringToEndOfStatement().trim(); - ARM::ArchKind ID = ARM::parseArch(Arch); - - if (ID == ARM::ArchKind::INVALID) - return Error(L, "Unknown arch name"); - - bool WasThumb = isThumb(); - Triple T; - MCSubtargetInfo &STI = copySTI(); - STI.setDefaultFeatures("", ("+" + ARM::getArchName(ID)).str()); - setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits())); - FixModeAfterArchChange(WasThumb, L); - - getTargetStreamer().emitArch(ID); - return false; -} - -/// parseDirectiveEabiAttr -/// ::= .eabi_attribute int, int [, "str"] -/// ::= .eabi_attribute Tag_name, int [, "str"] -bool ARMAsmParser::parseDirectiveEabiAttr(SMLoc L) { - MCAsmParser &Parser = getParser(); - int64_t Tag; - SMLoc TagLoc; - TagLoc = Parser.getTok().getLoc(); - if (Parser.getTok().is(AsmToken::Identifier)) { - StringRef Name = Parser.getTok().getIdentifier(); - Tag = ARMBuildAttrs::AttrTypeFromString(Name); - if (Tag == -1) { - Error(TagLoc, "attribute name not recognised: " + Name); - return false; - } - Parser.Lex(); - } else { - const MCExpr *AttrExpr; - - TagLoc = Parser.getTok().getLoc(); - if (Parser.parseExpression(AttrExpr)) - return true; - - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(AttrExpr); - if (check(!CE, TagLoc, "expected numeric constant")) - return true; - - Tag = CE->getValue(); - } - - if (Parser.parseToken(AsmToken::Comma, "comma expected")) - return true; - - StringRef StringValue = ""; - bool IsStringValue = false; - - int64_t IntegerValue = 0; - bool IsIntegerValue = false; - - if (Tag == ARMBuildAttrs::CPU_raw_name || Tag == ARMBuildAttrs::CPU_name) - IsStringValue = true; - else if (Tag == ARMBuildAttrs::compatibility) { - IsStringValue = true; - IsIntegerValue = true; - } else if (Tag < 32 || Tag % 2 == 0) - IsIntegerValue = true; - else if (Tag % 2 == 1) - IsStringValue = true; - else - llvm_unreachable("invalid tag type"); - - if (IsIntegerValue) { - const MCExpr *ValueExpr; - SMLoc ValueExprLoc = Parser.getTok().getLoc(); - if (Parser.parseExpression(ValueExpr)) - return true; - - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ValueExpr); - if (!CE) - return Error(ValueExprLoc, "expected numeric constant"); - IntegerValue = CE->getValue(); - } - - if (Tag == ARMBuildAttrs::compatibility) { - if (Parser.parseToken(AsmToken::Comma, "comma expected")) - return true; - } - - if (IsStringValue) { - if (Parser.getTok().isNot(AsmToken::String)) - return Error(Parser.getTok().getLoc(), "bad string constant"); - - StringValue = Parser.getTok().getStringContents(); - Parser.Lex(); - } - - if (Parser.parseToken(AsmToken::EndOfStatement, - "unexpected token in '.eabi_attribute' directive")) - return true; - - if (IsIntegerValue && IsStringValue) { - assert(Tag == ARMBuildAttrs::compatibility); - getTargetStreamer().emitIntTextAttribute(Tag, IntegerValue, StringValue); - } else if (IsIntegerValue) - getTargetStreamer().emitAttribute(Tag, IntegerValue); - else if (IsStringValue) - getTargetStreamer().emitTextAttribute(Tag, StringValue); - return false; -} - -/// parseDirectiveCPU -/// ::= .cpu str -bool ARMAsmParser::parseDirectiveCPU(SMLoc L) { - StringRef CPU = getParser().parseStringToEndOfStatement().trim(); - getTargetStreamer().emitTextAttribute(ARMBuildAttrs::CPU_name, CPU); - - // FIXME: This is using table-gen data, but should be moved to - // ARMTargetParser once that is table-gen'd. - if (!getSTI().isCPUStringValid(CPU)) - return Error(L, "Unknown CPU name"); - - bool WasThumb = isThumb(); - MCSubtargetInfo &STI = copySTI(); - STI.setDefaultFeatures(CPU, ""); - setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits())); - FixModeAfterArchChange(WasThumb, L); - - return false; -} - -/// parseDirectiveFPU -/// ::= .fpu str -bool ARMAsmParser::parseDirectiveFPU(SMLoc L) { - SMLoc FPUNameLoc = getTok().getLoc(); - StringRef FPU = getParser().parseStringToEndOfStatement().trim(); - - unsigned ID = ARM::parseFPU(FPU); - std::vector<StringRef> Features; - if (!ARM::getFPUFeatures(ID, Features)) - return Error(FPUNameLoc, "Unknown FPU name"); - - MCSubtargetInfo &STI = copySTI(); - for (auto Feature : Features) - STI.ApplyFeatureFlag(Feature); - setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits())); - - getTargetStreamer().emitFPU(ID); - return false; -} - -/// parseDirectiveFnStart -/// ::= .fnstart -bool ARMAsmParser::parseDirectiveFnStart(SMLoc L) { - if (parseToken(AsmToken::EndOfStatement, - "unexpected token in '.fnstart' directive")) - return true; - - if (UC.hasFnStart()) { - Error(L, ".fnstart starts before the end of previous one"); - UC.emitFnStartLocNotes(); - return true; - } - - // Reset the unwind directives parser state - UC.reset(); - - getTargetStreamer().emitFnStart(); - - UC.recordFnStart(L); - return false; -} - -/// parseDirectiveFnEnd -/// ::= .fnend -bool ARMAsmParser::parseDirectiveFnEnd(SMLoc L) { - if (parseToken(AsmToken::EndOfStatement, - "unexpected token in '.fnend' directive")) - return true; - // Check the ordering of unwind directives - if (!UC.hasFnStart()) - return Error(L, ".fnstart must precede .fnend directive"); - - // Reset the unwind directives parser state - getTargetStreamer().emitFnEnd(); - - UC.reset(); - return false; -} - -/// parseDirectiveCantUnwind -/// ::= .cantunwind -bool ARMAsmParser::parseDirectiveCantUnwind(SMLoc L) { - if (parseToken(AsmToken::EndOfStatement, - "unexpected token in '.cantunwind' directive")) - return true; - - UC.recordCantUnwind(L); - // Check the ordering of unwind directives - if (check(!UC.hasFnStart(), L, ".fnstart must precede .cantunwind directive")) - return true; - - if (UC.hasHandlerData()) { - Error(L, ".cantunwind can't be used with .handlerdata directive"); - UC.emitHandlerDataLocNotes(); - return true; - } - if (UC.hasPersonality()) { - Error(L, ".cantunwind can't be used with .personality directive"); - UC.emitPersonalityLocNotes(); - return true; - } - - getTargetStreamer().emitCantUnwind(); - return false; -} - -/// parseDirectivePersonality -/// ::= .personality name -bool ARMAsmParser::parseDirectivePersonality(SMLoc L) { - MCAsmParser &Parser = getParser(); - bool HasExistingPersonality = UC.hasPersonality(); - - // Parse the name of the personality routine - if (Parser.getTok().isNot(AsmToken::Identifier)) - return Error(L, "unexpected input in .personality directive."); - StringRef Name(Parser.getTok().getIdentifier()); - Parser.Lex(); - - if (parseToken(AsmToken::EndOfStatement, - "unexpected token in '.personality' directive")) - return true; - - UC.recordPersonality(L); - - // Check the ordering of unwind directives - if (!UC.hasFnStart()) - return Error(L, ".fnstart must precede .personality directive"); - if (UC.cantUnwind()) { - Error(L, ".personality can't be used with .cantunwind directive"); - UC.emitCantUnwindLocNotes(); - return true; - } - if (UC.hasHandlerData()) { - Error(L, ".personality must precede .handlerdata directive"); - UC.emitHandlerDataLocNotes(); - return true; - } - if (HasExistingPersonality) { - Error(L, "multiple personality directives"); - UC.emitPersonalityLocNotes(); - return true; - } - - MCSymbol *PR = getParser().getContext().getOrCreateSymbol(Name); - getTargetStreamer().emitPersonality(PR); - return false; -} - -/// parseDirectiveHandlerData -/// ::= .handlerdata -bool ARMAsmParser::parseDirectiveHandlerData(SMLoc L) { - if (parseToken(AsmToken::EndOfStatement, - "unexpected token in '.handlerdata' directive")) - return true; - - UC.recordHandlerData(L); - // Check the ordering of unwind directives - if (!UC.hasFnStart()) - return Error(L, ".fnstart must precede .personality directive"); - if (UC.cantUnwind()) { - Error(L, ".handlerdata can't be used with .cantunwind directive"); - UC.emitCantUnwindLocNotes(); - return true; - } - - getTargetStreamer().emitHandlerData(); - return false; -} - -/// parseDirectiveSetFP -/// ::= .setfp fpreg, spreg [, offset] -bool ARMAsmParser::parseDirectiveSetFP(SMLoc L) { - MCAsmParser &Parser = getParser(); - // Check the ordering of unwind directives - if (check(!UC.hasFnStart(), L, ".fnstart must precede .setfp directive") || - check(UC.hasHandlerData(), L, - ".setfp must precede .handlerdata directive")) - return true; - - // Parse fpreg - SMLoc FPRegLoc = Parser.getTok().getLoc(); - int FPReg = tryParseRegister(); - - if (check(FPReg == -1, FPRegLoc, "frame pointer register expected") || - Parser.parseToken(AsmToken::Comma, "comma expected")) - return true; - - // Parse spreg - SMLoc SPRegLoc = Parser.getTok().getLoc(); - int SPReg = tryParseRegister(); - if (check(SPReg == -1, SPRegLoc, "stack pointer register expected") || - check(SPReg != ARM::SP && SPReg != UC.getFPReg(), SPRegLoc, - "register should be either $sp or the latest fp register")) - return true; - - // Update the frame pointer register - UC.saveFPReg(FPReg); - - // Parse offset - int64_t Offset = 0; - if (Parser.parseOptionalToken(AsmToken::Comma)) { - if (Parser.getTok().isNot(AsmToken::Hash) && - Parser.getTok().isNot(AsmToken::Dollar)) - return Error(Parser.getTok().getLoc(), "'#' expected"); - Parser.Lex(); // skip hash token. - - const MCExpr *OffsetExpr; - SMLoc ExLoc = Parser.getTok().getLoc(); - SMLoc EndLoc; - if (getParser().parseExpression(OffsetExpr, EndLoc)) - return Error(ExLoc, "malformed setfp offset"); - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(OffsetExpr); - if (check(!CE, ExLoc, "setfp offset must be an immediate")) - return true; - Offset = CE->getValue(); - } - - if (Parser.parseToken(AsmToken::EndOfStatement)) - return true; - - getTargetStreamer().emitSetFP(static_cast<unsigned>(FPReg), - static_cast<unsigned>(SPReg), Offset); - return false; -} - -/// parseDirective -/// ::= .pad offset -bool ARMAsmParser::parseDirectivePad(SMLoc L) { - MCAsmParser &Parser = getParser(); - // Check the ordering of unwind directives - if (!UC.hasFnStart()) - return Error(L, ".fnstart must precede .pad directive"); - if (UC.hasHandlerData()) - return Error(L, ".pad must precede .handlerdata directive"); - - // Parse the offset - if (Parser.getTok().isNot(AsmToken::Hash) && - Parser.getTok().isNot(AsmToken::Dollar)) - return Error(Parser.getTok().getLoc(), "'#' expected"); - Parser.Lex(); // skip hash token. - - const MCExpr *OffsetExpr; - SMLoc ExLoc = Parser.getTok().getLoc(); - SMLoc EndLoc; - if (getParser().parseExpression(OffsetExpr, EndLoc)) - return Error(ExLoc, "malformed pad offset"); - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(OffsetExpr); - if (!CE) - return Error(ExLoc, "pad offset must be an immediate"); - - if (parseToken(AsmToken::EndOfStatement, - "unexpected token in '.pad' directive")) - return true; - - getTargetStreamer().emitPad(CE->getValue()); - return false; -} - -/// parseDirectiveRegSave -/// ::= .save { registers } -/// ::= .vsave { registers } -bool ARMAsmParser::parseDirectiveRegSave(SMLoc L, bool IsVector) { - // Check the ordering of unwind directives - if (!UC.hasFnStart()) - return Error(L, ".fnstart must precede .save or .vsave directives"); - if (UC.hasHandlerData()) - return Error(L, ".save or .vsave must precede .handlerdata directive"); - - // RAII object to make sure parsed operands are deleted. - SmallVector<std::unique_ptr<MCParsedAsmOperand>, 1> Operands; - - // Parse the register list - if (parseRegisterList(Operands) || - parseToken(AsmToken::EndOfStatement, "unexpected token in directive")) - return true; - ARMOperand &Op = (ARMOperand &)*Operands[0]; - if (!IsVector && !Op.isRegList()) - return Error(L, ".save expects GPR registers"); - if (IsVector && !Op.isDPRRegList()) - return Error(L, ".vsave expects DPR registers"); - - getTargetStreamer().emitRegSave(Op.getRegList(), IsVector); - return false; -} - -/// parseDirectiveInst -/// ::= .inst opcode [, ...] -/// ::= .inst.n opcode [, ...] -/// ::= .inst.w opcode [, ...] -bool ARMAsmParser::parseDirectiveInst(SMLoc Loc, char Suffix) { - int Width = 4; - - if (isThumb()) { - switch (Suffix) { - case 'n': - Width = 2; - break; - case 'w': - break; - default: - Width = 0; - break; - } - } else { - if (Suffix) - return Error(Loc, "width suffixes are invalid in ARM mode"); - } - - auto parseOne = [&]() -> bool { - const MCExpr *Expr; - if (getParser().parseExpression(Expr)) - return true; - const MCConstantExpr *Value = dyn_cast_or_null<MCConstantExpr>(Expr); - if (!Value) { - return Error(Loc, "expected constant expression"); - } - - char CurSuffix = Suffix; - switch (Width) { - case 2: - if (Value->getValue() > 0xffff) - return Error(Loc, "inst.n operand is too big, use inst.w instead"); - break; - case 4: - if (Value->getValue() > 0xffffffff) - return Error(Loc, StringRef(Suffix ? "inst.w" : "inst") + - " operand is too big"); - break; - case 0: - // Thumb mode, no width indicated. Guess from the opcode, if possible. - if (Value->getValue() < 0xe800) - CurSuffix = 'n'; - else if (Value->getValue() >= 0xe8000000) - CurSuffix = 'w'; - else - return Error(Loc, "cannot determine Thumb instruction size, " - "use inst.n/inst.w instead"); - break; - default: - llvm_unreachable("only supported widths are 2 and 4"); - } - - getTargetStreamer().emitInst(Value->getValue(), CurSuffix); - return false; - }; - - if (parseOptionalToken(AsmToken::EndOfStatement)) - return Error(Loc, "expected expression following directive"); - if (parseMany(parseOne)) - return true; - return false; -} - -/// parseDirectiveLtorg -/// ::= .ltorg | .pool -bool ARMAsmParser::parseDirectiveLtorg(SMLoc L) { - if (parseToken(AsmToken::EndOfStatement, "unexpected token in directive")) - return true; - getTargetStreamer().emitCurrentConstantPool(); - return false; -} - -bool ARMAsmParser::parseDirectiveEven(SMLoc L) { - const MCSection *Section = getStreamer().getCurrentSectionOnly(); - - if (parseToken(AsmToken::EndOfStatement, "unexpected token in directive")) - return true; - - if (!Section) { - getStreamer().InitSections(false); - Section = getStreamer().getCurrentSectionOnly(); - } - - assert(Section && "must have section to emit alignment"); - if (Section->UseCodeAlign()) - getStreamer().EmitCodeAlignment(2); - else - getStreamer().EmitValueToAlignment(2); - - return false; -} - -/// parseDirectivePersonalityIndex -/// ::= .personalityindex index -bool ARMAsmParser::parseDirectivePersonalityIndex(SMLoc L) { - MCAsmParser &Parser = getParser(); - bool HasExistingPersonality = UC.hasPersonality(); - - const MCExpr *IndexExpression; - SMLoc IndexLoc = Parser.getTok().getLoc(); - if (Parser.parseExpression(IndexExpression) || - parseToken(AsmToken::EndOfStatement, - "unexpected token in '.personalityindex' directive")) { - return true; - } - - UC.recordPersonalityIndex(L); - - if (!UC.hasFnStart()) { - return Error(L, ".fnstart must precede .personalityindex directive"); - } - if (UC.cantUnwind()) { - Error(L, ".personalityindex cannot be used with .cantunwind"); - UC.emitCantUnwindLocNotes(); - return true; - } - if (UC.hasHandlerData()) { - Error(L, ".personalityindex must precede .handlerdata directive"); - UC.emitHandlerDataLocNotes(); - return true; - } - if (HasExistingPersonality) { - Error(L, "multiple personality directives"); - UC.emitPersonalityLocNotes(); - return true; - } - - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(IndexExpression); - if (!CE) - return Error(IndexLoc, "index must be a constant number"); - if (CE->getValue() < 0 || CE->getValue() >= ARM::EHABI::NUM_PERSONALITY_INDEX) - return Error(IndexLoc, - "personality routine index should be in range [0-3]"); - - getTargetStreamer().emitPersonalityIndex(CE->getValue()); - return false; -} - -/// parseDirectiveUnwindRaw -/// ::= .unwind_raw offset, opcode [, opcode...] -bool ARMAsmParser::parseDirectiveUnwindRaw(SMLoc L) { - MCAsmParser &Parser = getParser(); - int64_t StackOffset; - const MCExpr *OffsetExpr; - SMLoc OffsetLoc = getLexer().getLoc(); - - if (!UC.hasFnStart()) - return Error(L, ".fnstart must precede .unwind_raw directives"); - if (getParser().parseExpression(OffsetExpr)) - return Error(OffsetLoc, "expected expression"); - - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(OffsetExpr); - if (!CE) - return Error(OffsetLoc, "offset must be a constant"); - - StackOffset = CE->getValue(); - - if (Parser.parseToken(AsmToken::Comma, "expected comma")) - return true; - - SmallVector<uint8_t, 16> Opcodes; - - auto parseOne = [&]() -> bool { - const MCExpr *OE; - SMLoc OpcodeLoc = getLexer().getLoc(); - if (check(getLexer().is(AsmToken::EndOfStatement) || - Parser.parseExpression(OE), - OpcodeLoc, "expected opcode expression")) - return true; - const MCConstantExpr *OC = dyn_cast<MCConstantExpr>(OE); - if (!OC) - return Error(OpcodeLoc, "opcode value must be a constant"); - const int64_t Opcode = OC->getValue(); - if (Opcode & ~0xff) - return Error(OpcodeLoc, "invalid opcode"); - Opcodes.push_back(uint8_t(Opcode)); - return false; - }; - - // Must have at least 1 element - SMLoc OpcodeLoc = getLexer().getLoc(); - if (parseOptionalToken(AsmToken::EndOfStatement)) - return Error(OpcodeLoc, "expected opcode expression"); - if (parseMany(parseOne)) - return true; - - getTargetStreamer().emitUnwindRaw(StackOffset, Opcodes); - return false; -} - -/// parseDirectiveTLSDescSeq -/// ::= .tlsdescseq tls-variable -bool ARMAsmParser::parseDirectiveTLSDescSeq(SMLoc L) { - MCAsmParser &Parser = getParser(); - - if (getLexer().isNot(AsmToken::Identifier)) - return TokError("expected variable after '.tlsdescseq' directive"); - - const MCSymbolRefExpr *SRE = - MCSymbolRefExpr::create(Parser.getTok().getIdentifier(), - MCSymbolRefExpr::VK_ARM_TLSDESCSEQ, getContext()); - Lex(); - - if (parseToken(AsmToken::EndOfStatement, - "unexpected token in '.tlsdescseq' directive")) - return true; - - getTargetStreamer().AnnotateTLSDescriptorSequence(SRE); - return false; -} - -/// parseDirectiveMovSP -/// ::= .movsp reg [, #offset] -bool ARMAsmParser::parseDirectiveMovSP(SMLoc L) { - MCAsmParser &Parser = getParser(); - if (!UC.hasFnStart()) - return Error(L, ".fnstart must precede .movsp directives"); - if (UC.getFPReg() != ARM::SP) - return Error(L, "unexpected .movsp directive"); - - SMLoc SPRegLoc = Parser.getTok().getLoc(); - int SPReg = tryParseRegister(); - if (SPReg == -1) - return Error(SPRegLoc, "register expected"); - if (SPReg == ARM::SP || SPReg == ARM::PC) - return Error(SPRegLoc, "sp and pc are not permitted in .movsp directive"); - - int64_t Offset = 0; - if (Parser.parseOptionalToken(AsmToken::Comma)) { - if (Parser.parseToken(AsmToken::Hash, "expected #constant")) - return true; - - const MCExpr *OffsetExpr; - SMLoc OffsetLoc = Parser.getTok().getLoc(); - - if (Parser.parseExpression(OffsetExpr)) - return Error(OffsetLoc, "malformed offset expression"); - - const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(OffsetExpr); - if (!CE) - return Error(OffsetLoc, "offset must be an immediate constant"); - - Offset = CE->getValue(); - } - - if (parseToken(AsmToken::EndOfStatement, - "unexpected token in '.movsp' directive")) - return true; - - getTargetStreamer().emitMovSP(SPReg, Offset); - UC.saveFPReg(SPReg); - - return false; -} - -/// parseDirectiveObjectArch -/// ::= .object_arch name -bool ARMAsmParser::parseDirectiveObjectArch(SMLoc L) { - MCAsmParser &Parser = getParser(); - if (getLexer().isNot(AsmToken::Identifier)) - return Error(getLexer().getLoc(), "unexpected token"); - - StringRef Arch = Parser.getTok().getString(); - SMLoc ArchLoc = Parser.getTok().getLoc(); - Lex(); - - ARM::ArchKind ID = ARM::parseArch(Arch); - - if (ID == ARM::ArchKind::INVALID) - return Error(ArchLoc, "unknown architecture '" + Arch + "'"); - if (parseToken(AsmToken::EndOfStatement)) - return true; - - getTargetStreamer().emitObjectArch(ID); - return false; -} - -/// parseDirectiveAlign -/// ::= .align -bool ARMAsmParser::parseDirectiveAlign(SMLoc L) { - // NOTE: if this is not the end of the statement, fall back to the target - // agnostic handling for this directive which will correctly handle this. - if (parseOptionalToken(AsmToken::EndOfStatement)) { - // '.align' is target specifically handled to mean 2**2 byte alignment. - const MCSection *Section = getStreamer().getCurrentSectionOnly(); - assert(Section && "must have section to emit alignment"); - if (Section->UseCodeAlign()) - getStreamer().EmitCodeAlignment(4, 0); - else - getStreamer().EmitValueToAlignment(4, 0, 1, 0); - return false; - } - return true; -} - -/// parseDirectiveThumbSet -/// ::= .thumb_set name, value -bool ARMAsmParser::parseDirectiveThumbSet(SMLoc L) { - MCAsmParser &Parser = getParser(); - - StringRef Name; - if (check(Parser.parseIdentifier(Name), - "expected identifier after '.thumb_set'") || - parseToken(AsmToken::Comma, "expected comma after name '" + Name + "'")) - return true; - - MCSymbol *Sym; - const MCExpr *Value; - if (MCParserUtils::parseAssignmentExpression(Name, /* allow_redef */ true, - Parser, Sym, Value)) - return true; - - getTargetStreamer().emitThumbSet(Sym, Value); - return false; -} - -/// Force static initialization. -extern "C" void LLVMInitializeARMAsmParser() { - RegisterMCAsmParser<ARMAsmParser> X(getTheARMLETarget()); - RegisterMCAsmParser<ARMAsmParser> Y(getTheARMBETarget()); - RegisterMCAsmParser<ARMAsmParser> A(getTheThumbLETarget()); - RegisterMCAsmParser<ARMAsmParser> B(getTheThumbBETarget()); -} - -#define GET_REGISTER_MATCHER -#define GET_SUBTARGET_FEATURE_NAME -#define GET_MATCHER_IMPLEMENTATION -#define GET_MNEMONIC_SPELL_CHECKER -#include "ARMGenAsmMatcher.inc" - -// Some diagnostics need to vary with subtarget features, so they are handled -// here. For example, the DPR class has either 16 or 32 registers, depending -// on the FPU available. -const char * -ARMAsmParser::getCustomOperandDiag(ARMMatchResultTy MatchError) { - switch (MatchError) { - // rGPR contains sp starting with ARMv8. - case Match_rGPR: - return hasV8Ops() ? "operand must be a register in range [r0, r14]" - : "operand must be a register in range [r0, r12] or r14"; - // DPR contains 16 registers for some FPUs, and 32 for others. - case Match_DPR: - return hasD16() ? "operand must be a register in range [d0, d15]" - : "operand must be a register in range [d0, d31]"; - case Match_DPR_RegList: - return hasD16() ? "operand must be a list of registers in range [d0, d15]" - : "operand must be a list of registers in range [d0, d31]"; - - // For all other diags, use the static string from tablegen. - default: - return getMatchKindDiag(MatchError); - } -} - -// Process the list of near-misses, throwing away ones we don't want to report -// to the user, and converting the rest to a source location and string that -// should be reported. -void -ARMAsmParser::FilterNearMisses(SmallVectorImpl<NearMissInfo> &NearMissesIn, - SmallVectorImpl<NearMissMessage> &NearMissesOut, - SMLoc IDLoc, OperandVector &Operands) { - // TODO: If operand didn't match, sub in a dummy one and run target - // predicate, so that we can avoid reporting near-misses that are invalid? - // TODO: Many operand types dont have SuperClasses set, so we report - // redundant ones. - // TODO: Some operands are superclasses of registers (e.g. - // MCK_RegShiftedImm), we don't have any way to represent that currently. - // TODO: This is not all ARM-specific, can some of it be factored out? - - // Record some information about near-misses that we have already seen, so - // that we can avoid reporting redundant ones. For example, if there are - // variants of an instruction that take 8- and 16-bit immediates, we want - // to only report the widest one. - std::multimap<unsigned, unsigned> OperandMissesSeen; - SmallSet<uint64_t, 4> FeatureMissesSeen; - bool ReportedTooFewOperands = false; - - // Process the near-misses in reverse order, so that we see more general ones - // first, and so can avoid emitting more specific ones. - for (NearMissInfo &I : reverse(NearMissesIn)) { - switch (I.getKind()) { - case NearMissInfo::NearMissOperand: { - SMLoc OperandLoc = - ((ARMOperand &)*Operands[I.getOperandIndex()]).getStartLoc(); - const char *OperandDiag = - getCustomOperandDiag((ARMMatchResultTy)I.getOperandError()); - - // If we have already emitted a message for a superclass, don't also report - // the sub-class. We consider all operand classes that we don't have a - // specialised diagnostic for to be equal for the propose of this check, - // so that we don't report the generic error multiple times on the same - // operand. - unsigned DupCheckMatchClass = OperandDiag ? I.getOperandClass() : ~0U; - auto PrevReports = OperandMissesSeen.equal_range(I.getOperandIndex()); - if (std::any_of(PrevReports.first, PrevReports.second, - [DupCheckMatchClass]( - const std::pair<unsigned, unsigned> Pair) { - if (DupCheckMatchClass == ~0U || Pair.second == ~0U) - return Pair.second == DupCheckMatchClass; - else - return isSubclass((MatchClassKind)DupCheckMatchClass, - (MatchClassKind)Pair.second); - })) - break; - OperandMissesSeen.insert( - std::make_pair(I.getOperandIndex(), DupCheckMatchClass)); - - NearMissMessage Message; - Message.Loc = OperandLoc; - if (OperandDiag) { - Message.Message = OperandDiag; - } else if (I.getOperandClass() == InvalidMatchClass) { - Message.Message = "too many operands for instruction"; - } else { - Message.Message = "invalid operand for instruction"; - LLVM_DEBUG( - dbgs() << "Missing diagnostic string for operand class " - << getMatchClassName((MatchClassKind)I.getOperandClass()) - << I.getOperandClass() << ", error " << I.getOperandError() - << ", opcode " << MII.getName(I.getOpcode()) << "\n"); - } - NearMissesOut.emplace_back(Message); - break; - } - case NearMissInfo::NearMissFeature: { - uint64_t MissingFeatures = I.getFeatures(); - // Don't report the same set of features twice. - if (FeatureMissesSeen.count(MissingFeatures)) - break; - FeatureMissesSeen.insert(MissingFeatures); - - // Special case: don't report a feature set which includes arm-mode for - // targets that don't have ARM mode. - if ((MissingFeatures & Feature_IsARM) && !hasARM()) - break; - // Don't report any near-misses that both require switching instruction - // set, and adding other subtarget features. - if (isThumb() && (MissingFeatures & Feature_IsARM) && - (MissingFeatures & ~Feature_IsARM)) - break; - if (!isThumb() && (MissingFeatures & Feature_IsThumb) && - (MissingFeatures & ~Feature_IsThumb)) - break; - if (!isThumb() && (MissingFeatures & Feature_IsThumb2) && - (MissingFeatures & ~(Feature_IsThumb2 | Feature_IsThumb))) - break; - if (isMClass() && (MissingFeatures & Feature_HasNEON)) - break; - - NearMissMessage Message; - Message.Loc = IDLoc; - raw_svector_ostream OS(Message.Message); - - OS << "instruction requires:"; - uint64_t Mask = 1; - for (unsigned MaskPos = 0; MaskPos < (sizeof(MissingFeatures) * 8 - 1); - ++MaskPos) { - if (MissingFeatures & Mask) { - OS << " " << getSubtargetFeatureName(MissingFeatures & Mask); - } - Mask <<= 1; - } - NearMissesOut.emplace_back(Message); - - break; - } - case NearMissInfo::NearMissPredicate: { - NearMissMessage Message; - Message.Loc = IDLoc; - switch (I.getPredicateError()) { - case Match_RequiresNotITBlock: - Message.Message = "flag setting instruction only valid outside IT block"; - break; - case Match_RequiresITBlock: - Message.Message = "instruction only valid inside IT block"; - break; - case Match_RequiresV6: - Message.Message = "instruction variant requires ARMv6 or later"; - break; - case Match_RequiresThumb2: - Message.Message = "instruction variant requires Thumb2"; - break; - case Match_RequiresV8: - Message.Message = "instruction variant requires ARMv8 or later"; - break; - case Match_RequiresFlagSetting: - Message.Message = "no flag-preserving variant of this instruction available"; - break; - case Match_InvalidOperand: - Message.Message = "invalid operand for instruction"; - break; - default: - llvm_unreachable("Unhandled target predicate error"); - break; - } - NearMissesOut.emplace_back(Message); - break; - } - case NearMissInfo::NearMissTooFewOperands: { - if (!ReportedTooFewOperands) { - SMLoc EndLoc = ((ARMOperand &)*Operands.back()).getEndLoc(); - NearMissesOut.emplace_back(NearMissMessage{ - EndLoc, StringRef("too few operands for instruction")}); - ReportedTooFewOperands = true; - } - break; - } - case NearMissInfo::NoNearMiss: - // This should never leave the matcher. - llvm_unreachable("not a near-miss"); - break; - } - } -} - -void ARMAsmParser::ReportNearMisses(SmallVectorImpl<NearMissInfo> &NearMisses, - SMLoc IDLoc, OperandVector &Operands) { - SmallVector<NearMissMessage, 4> Messages; - FilterNearMisses(NearMisses, Messages, IDLoc, Operands); - - if (Messages.size() == 0) { - // No near-misses were found, so the best we can do is "invalid - // instruction". - Error(IDLoc, "invalid instruction"); - } else if (Messages.size() == 1) { - // One near miss was found, report it as the sole error. - Error(Messages[0].Loc, Messages[0].Message); - } else { - // More than one near miss, so report a generic "invalid instruction" - // error, followed by notes for each of the near-misses. - Error(IDLoc, "invalid instruction, any one of the following would fix this:"); - for (auto &M : Messages) { - Note(M.Loc, M.Message); - } - } -} - -// FIXME: This structure should be moved inside ARMTargetParser -// when we start to table-generate them, and we can use the ARM -// flags below, that were generated by table-gen. -static const struct { - const unsigned Kind; - const uint64_t ArchCheck; - const FeatureBitset Features; -} Extensions[] = { - { ARM::AEK_CRC, Feature_HasV8, {ARM::FeatureCRC} }, - { ARM::AEK_CRYPTO, Feature_HasV8, - {ARM::FeatureCrypto, ARM::FeatureNEON, ARM::FeatureFPARMv8} }, - { ARM::AEK_FP, Feature_HasV8, {ARM::FeatureFPARMv8} }, - { (ARM::AEK_HWDIVTHUMB | ARM::AEK_HWDIVARM), Feature_HasV7 | Feature_IsNotMClass, - {ARM::FeatureHWDivThumb, ARM::FeatureHWDivARM} }, - { ARM::AEK_MP, Feature_HasV7 | Feature_IsNotMClass, {ARM::FeatureMP} }, - { ARM::AEK_SIMD, Feature_HasV8, {ARM::FeatureNEON, ARM::FeatureFPARMv8} }, - { ARM::AEK_SEC, Feature_HasV6K, {ARM::FeatureTrustZone} }, - // FIXME: Only available in A-class, isel not predicated - { ARM::AEK_VIRT, Feature_HasV7, {ARM::FeatureVirtualization} }, - { ARM::AEK_FP16, Feature_HasV8_2a, {ARM::FeatureFPARMv8, ARM::FeatureFullFP16} }, - { ARM::AEK_RAS, Feature_HasV8, {ARM::FeatureRAS} }, - // FIXME: Unsupported extensions. - { ARM::AEK_OS, Feature_None, {} }, - { ARM::AEK_IWMMXT, Feature_None, {} }, - { ARM::AEK_IWMMXT2, Feature_None, {} }, - { ARM::AEK_MAVERICK, Feature_None, {} }, - { ARM::AEK_XSCALE, Feature_None, {} }, -}; - -/// parseDirectiveArchExtension -/// ::= .arch_extension [no]feature -bool ARMAsmParser::parseDirectiveArchExtension(SMLoc L) { - MCAsmParser &Parser = getParser(); - - if (getLexer().isNot(AsmToken::Identifier)) - return Error(getLexer().getLoc(), "expected architecture extension name"); - - StringRef Name = Parser.getTok().getString(); - SMLoc ExtLoc = Parser.getTok().getLoc(); - Lex(); - - if (parseToken(AsmToken::EndOfStatement, - "unexpected token in '.arch_extension' directive")) - return true; - - bool EnableFeature = true; - if (Name.startswith_lower("no")) { - EnableFeature = false; - Name = Name.substr(2); - } - unsigned FeatureKind = ARM::parseArchExt(Name); - if (FeatureKind == ARM::AEK_INVALID) - return Error(ExtLoc, "unknown architectural extension: " + Name); - - for (const auto &Extension : Extensions) { - if (Extension.Kind != FeatureKind) - continue; - - if (Extension.Features.none()) - return Error(ExtLoc, "unsupported architectural extension: " + Name); - - if ((getAvailableFeatures() & Extension.ArchCheck) != Extension.ArchCheck) - return Error(ExtLoc, "architectural extension '" + Name + - "' is not " - "allowed for the current base architecture"); - - MCSubtargetInfo &STI = copySTI(); - FeatureBitset ToggleFeatures = EnableFeature - ? (~STI.getFeatureBits() & Extension.Features) - : ( STI.getFeatureBits() & Extension.Features); - - uint64_t Features = - ComputeAvailableFeatures(STI.ToggleFeature(ToggleFeatures)); - setAvailableFeatures(Features); - return false; - } - - return Error(ExtLoc, "unknown architectural extension: " + Name); -} - -// Define this matcher function after the auto-generated include so we -// have the match class enum definitions. -unsigned ARMAsmParser::validateTargetOperandClass(MCParsedAsmOperand &AsmOp, - unsigned Kind) { - ARMOperand &Op = static_cast<ARMOperand &>(AsmOp); - // If the kind is a token for a literal immediate, check if our asm - // operand matches. This is for InstAliases which have a fixed-value - // immediate in the syntax. - switch (Kind) { - default: break; - case MCK__35_0: - if (Op.isImm()) - if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op.getImm())) - if (CE->getValue() == 0) - return Match_Success; - break; - case MCK_ModImm: - if (Op.isImm()) { - const MCExpr *SOExpr = Op.getImm(); - int64_t Value; - if (!SOExpr->evaluateAsAbsolute(Value)) - return Match_Success; - assert((Value >= std::numeric_limits<int32_t>::min() && - Value <= std::numeric_limits<uint32_t>::max()) && - "expression value must be representable in 32 bits"); - } - break; - case MCK_rGPR: - if (hasV8Ops() && Op.isReg() && Op.getReg() == ARM::SP) - return Match_Success; - return Match_rGPR; - case MCK_GPRPair: - if (Op.isReg() && - MRI->getRegClass(ARM::GPRRegClassID).contains(Op.getReg())) - return Match_Success; - break; - } - return Match_InvalidOperand; -} |