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Diffstat (limited to 'contrib/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp')
| -rw-r--r-- | contrib/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp | 4615 |
1 files changed, 4615 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp b/contrib/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp new file mode 100644 index 0000000..394c8e7 --- /dev/null +++ b/contrib/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp @@ -0,0 +1,4615 @@ +//==- AArch64AsmParser.cpp - Parse AArch64 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 "MCTargetDesc/AArch64AddressingModes.h" +#include "MCTargetDesc/AArch64MCExpr.h" +#include "MCTargetDesc/AArch64TargetStreamer.h" +#include "Utils/AArch64BaseInfo.h" +#include "llvm/ADT/APInt.h" +#include "llvm/ADT/STLExtras.h" +#include "llvm/ADT/SmallString.h" +#include "llvm/ADT/SmallVector.h" +#include "llvm/ADT/StringSwitch.h" +#include "llvm/ADT/Twine.h" +#include "llvm/MC/MCContext.h" +#include "llvm/MC/MCExpr.h" +#include "llvm/MC/MCInst.h" +#include "llvm/MC/MCObjectFileInfo.h" +#include "llvm/MC/MCParser/MCAsmLexer.h" +#include "llvm/MC/MCParser/MCAsmParser.h" +#include "llvm/MC/MCParser/MCParsedAsmOperand.h" +#include "llvm/MC/MCRegisterInfo.h" +#include "llvm/MC/MCStreamer.h" +#include "llvm/MC/MCSubtargetInfo.h" +#include "llvm/MC/MCSymbol.h" +#include "llvm/MC/MCTargetAsmParser.h" +#include "llvm/Support/ErrorHandling.h" +#include "llvm/Support/SourceMgr.h" +#include "llvm/Support/TargetRegistry.h" +#include "llvm/Support/raw_ostream.h" +#include <cstdio> +using namespace llvm; + +namespace { + +class AArch64Operand; + +class AArch64AsmParser : public MCTargetAsmParser { +private: + StringRef Mnemonic; ///< Instruction mnemonic. + + // Map of register aliases registers via the .req directive. + StringMap<std::pair<bool, unsigned> > RegisterReqs; + + AArch64TargetStreamer &getTargetStreamer() { + MCTargetStreamer &TS = *getParser().getStreamer().getTargetStreamer(); + return static_cast<AArch64TargetStreamer &>(TS); + } + + SMLoc getLoc() const { return getParser().getTok().getLoc(); } + + bool parseSysAlias(StringRef Name, SMLoc NameLoc, OperandVector &Operands); + AArch64CC::CondCode parseCondCodeString(StringRef Cond); + bool parseCondCode(OperandVector &Operands, bool invertCondCode); + unsigned matchRegisterNameAlias(StringRef Name, bool isVector); + int tryParseRegister(); + int tryMatchVectorRegister(StringRef &Kind, bool expected); + bool parseRegister(OperandVector &Operands); + bool parseSymbolicImmVal(const MCExpr *&ImmVal); + bool parseVectorList(OperandVector &Operands); + bool parseOperand(OperandVector &Operands, bool isCondCode, + bool invertCondCode); + + void Warning(SMLoc L, const Twine &Msg) { getParser().Warning(L, Msg); } + bool Error(SMLoc L, const Twine &Msg) { return getParser().Error(L, Msg); } + bool showMatchError(SMLoc Loc, unsigned ErrCode); + + bool parseDirectiveWord(unsigned Size, SMLoc L); + bool parseDirectiveInst(SMLoc L); + + bool parseDirectiveTLSDescCall(SMLoc L); + + bool parseDirectiveLOH(StringRef LOH, SMLoc L); + bool parseDirectiveLtorg(SMLoc L); + + bool parseDirectiveReq(StringRef Name, SMLoc L); + bool parseDirectiveUnreq(SMLoc L); + + bool validateInstruction(MCInst &Inst, SmallVectorImpl<SMLoc> &Loc); + bool MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode, + OperandVector &Operands, MCStreamer &Out, + uint64_t &ErrorInfo, + bool MatchingInlineAsm) override; +/// @name Auto-generated Match Functions +/// { + +#define GET_ASSEMBLER_HEADER +#include "AArch64GenAsmMatcher.inc" + + /// } + + OperandMatchResultTy tryParseOptionalShiftExtend(OperandVector &Operands); + OperandMatchResultTy tryParseBarrierOperand(OperandVector &Operands); + OperandMatchResultTy tryParseMRSSystemRegister(OperandVector &Operands); + OperandMatchResultTy tryParseSysReg(OperandVector &Operands); + OperandMatchResultTy tryParseSysCROperand(OperandVector &Operands); + OperandMatchResultTy tryParsePrefetch(OperandVector &Operands); + OperandMatchResultTy tryParsePSBHint(OperandVector &Operands); + OperandMatchResultTy tryParseAdrpLabel(OperandVector &Operands); + OperandMatchResultTy tryParseAdrLabel(OperandVector &Operands); + OperandMatchResultTy tryParseFPImm(OperandVector &Operands); + OperandMatchResultTy tryParseAddSubImm(OperandVector &Operands); + OperandMatchResultTy tryParseGPR64sp0Operand(OperandVector &Operands); + bool tryParseVectorRegister(OperandVector &Operands); + OperandMatchResultTy tryParseGPRSeqPair(OperandVector &Operands); + +public: + enum AArch64MatchResultTy { + Match_InvalidSuffix = FIRST_TARGET_MATCH_RESULT_TY, +#define GET_OPERAND_DIAGNOSTIC_TYPES +#include "AArch64GenAsmMatcher.inc" + }; + AArch64AsmParser(const MCSubtargetInfo &STI, MCAsmParser &Parser, + const MCInstrInfo &MII, const MCTargetOptions &Options) + : MCTargetAsmParser(Options, STI) { + MCAsmParserExtension::Initialize(Parser); + MCStreamer &S = getParser().getStreamer(); + if (S.getTargetStreamer() == nullptr) + new AArch64TargetStreamer(S); + + // Initialize the set of available features. + setAvailableFeatures(ComputeAvailableFeatures(getSTI().getFeatureBits())); + } + + bool ParseInstruction(ParseInstructionInfo &Info, StringRef Name, + SMLoc NameLoc, OperandVector &Operands) override; + bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc) override; + bool ParseDirective(AsmToken DirectiveID) override; + unsigned validateTargetOperandClass(MCParsedAsmOperand &Op, + unsigned Kind) override; + + static bool classifySymbolRef(const MCExpr *Expr, + AArch64MCExpr::VariantKind &ELFRefKind, + MCSymbolRefExpr::VariantKind &DarwinRefKind, + int64_t &Addend); +}; +} // end anonymous namespace + +namespace { + +/// AArch64Operand - Instances of this class represent a parsed AArch64 machine +/// instruction. +class AArch64Operand : public MCParsedAsmOperand { +private: + enum KindTy { + k_Immediate, + k_ShiftedImm, + k_CondCode, + k_Register, + k_VectorList, + k_VectorIndex, + k_Token, + k_SysReg, + k_SysCR, + k_Prefetch, + k_ShiftExtend, + k_FPImm, + k_Barrier, + k_PSBHint, + } Kind; + + SMLoc StartLoc, EndLoc; + + struct TokOp { + const char *Data; + unsigned Length; + bool IsSuffix; // Is the operand actually a suffix on the mnemonic. + }; + + struct RegOp { + unsigned RegNum; + bool isVector; + }; + + struct VectorListOp { + unsigned RegNum; + unsigned Count; + unsigned NumElements; + unsigned ElementKind; + }; + + struct VectorIndexOp { + unsigned Val; + }; + + struct ImmOp { + const MCExpr *Val; + }; + + struct ShiftedImmOp { + const MCExpr *Val; + unsigned ShiftAmount; + }; + + struct CondCodeOp { + AArch64CC::CondCode Code; + }; + + struct FPImmOp { + unsigned Val; // Encoded 8-bit representation. + }; + + struct BarrierOp { + unsigned Val; // Not the enum since not all values have names. + const char *Data; + unsigned Length; + }; + + struct SysRegOp { + const char *Data; + unsigned Length; + uint32_t MRSReg; + uint32_t MSRReg; + uint32_t PStateField; + }; + + struct SysCRImmOp { + unsigned Val; + }; + + struct PrefetchOp { + unsigned Val; + const char *Data; + unsigned Length; + }; + + struct PSBHintOp { + unsigned Val; + const char *Data; + unsigned Length; + }; + + struct ShiftExtendOp { + AArch64_AM::ShiftExtendType Type; + unsigned Amount; + bool HasExplicitAmount; + }; + + struct ExtendOp { + unsigned Val; + }; + + union { + struct TokOp Tok; + struct RegOp Reg; + struct VectorListOp VectorList; + struct VectorIndexOp VectorIndex; + struct ImmOp Imm; + struct ShiftedImmOp ShiftedImm; + struct CondCodeOp CondCode; + struct FPImmOp FPImm; + struct BarrierOp Barrier; + struct SysRegOp SysReg; + struct SysCRImmOp SysCRImm; + struct PrefetchOp Prefetch; + struct PSBHintOp PSBHint; + struct ShiftExtendOp ShiftExtend; + }; + + // Keep the MCContext around as the MCExprs may need manipulated during + // the add<>Operands() calls. + MCContext &Ctx; + +public: + AArch64Operand(KindTy K, MCContext &Ctx) : Kind(K), Ctx(Ctx) {} + + AArch64Operand(const AArch64Operand &o) : MCParsedAsmOperand(), Ctx(o.Ctx) { + Kind = o.Kind; + StartLoc = o.StartLoc; + EndLoc = o.EndLoc; + switch (Kind) { + case k_Token: + Tok = o.Tok; + break; + case k_Immediate: + Imm = o.Imm; + break; + case k_ShiftedImm: + ShiftedImm = o.ShiftedImm; + break; + case k_CondCode: + CondCode = o.CondCode; + break; + case k_FPImm: + FPImm = o.FPImm; + break; + case k_Barrier: + Barrier = o.Barrier; + break; + case k_Register: + Reg = o.Reg; + break; + case k_VectorList: + VectorList = o.VectorList; + break; + case k_VectorIndex: + VectorIndex = o.VectorIndex; + break; + case k_SysReg: + SysReg = o.SysReg; + break; + case k_SysCR: + SysCRImm = o.SysCRImm; + break; + case k_Prefetch: + Prefetch = o.Prefetch; + break; + case k_PSBHint: + PSBHint = o.PSBHint; + break; + case k_ShiftExtend: + ShiftExtend = o.ShiftExtend; + break; + } + } + + /// 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; } + + StringRef getToken() const { + assert(Kind == k_Token && "Invalid access!"); + return StringRef(Tok.Data, Tok.Length); + } + + bool isTokenSuffix() const { + assert(Kind == k_Token && "Invalid access!"); + return Tok.IsSuffix; + } + + const MCExpr *getImm() const { + assert(Kind == k_Immediate && "Invalid access!"); + return Imm.Val; + } + + const MCExpr *getShiftedImmVal() const { + assert(Kind == k_ShiftedImm && "Invalid access!"); + return ShiftedImm.Val; + } + + unsigned getShiftedImmShift() const { + assert(Kind == k_ShiftedImm && "Invalid access!"); + return ShiftedImm.ShiftAmount; + } + + AArch64CC::CondCode getCondCode() const { + assert(Kind == k_CondCode && "Invalid access!"); + return CondCode.Code; + } + + unsigned getFPImm() const { + assert(Kind == k_FPImm && "Invalid access!"); + return FPImm.Val; + } + + unsigned getBarrier() const { + assert(Kind == k_Barrier && "Invalid access!"); + return Barrier.Val; + } + + StringRef getBarrierName() const { + assert(Kind == k_Barrier && "Invalid access!"); + return StringRef(Barrier.Data, Barrier.Length); + } + + unsigned getReg() const override { + assert(Kind == k_Register && "Invalid access!"); + return Reg.RegNum; + } + + unsigned getVectorListStart() const { + assert(Kind == k_VectorList && "Invalid access!"); + return VectorList.RegNum; + } + + unsigned getVectorListCount() const { + assert(Kind == k_VectorList && "Invalid access!"); + return VectorList.Count; + } + + unsigned getVectorIndex() const { + assert(Kind == k_VectorIndex && "Invalid access!"); + return VectorIndex.Val; + } + + StringRef getSysReg() const { + assert(Kind == k_SysReg && "Invalid access!"); + return StringRef(SysReg.Data, SysReg.Length); + } + + unsigned getSysCR() const { + assert(Kind == k_SysCR && "Invalid access!"); + return SysCRImm.Val; + } + + unsigned getPrefetch() const { + assert(Kind == k_Prefetch && "Invalid access!"); + return Prefetch.Val; + } + + unsigned getPSBHint() const { + assert(Kind == k_PSBHint && "Invalid access!"); + return PSBHint.Val; + } + + StringRef getPSBHintName() const { + assert(Kind == k_PSBHint && "Invalid access!"); + return StringRef(PSBHint.Data, PSBHint.Length); + } + + StringRef getPrefetchName() const { + assert(Kind == k_Prefetch && "Invalid access!"); + return StringRef(Prefetch.Data, Prefetch.Length); + } + + AArch64_AM::ShiftExtendType getShiftExtendType() const { + assert(Kind == k_ShiftExtend && "Invalid access!"); + return ShiftExtend.Type; + } + + unsigned getShiftExtendAmount() const { + assert(Kind == k_ShiftExtend && "Invalid access!"); + return ShiftExtend.Amount; + } + + bool hasShiftExtendAmount() const { + assert(Kind == k_ShiftExtend && "Invalid access!"); + return ShiftExtend.HasExplicitAmount; + } + + bool isImm() const override { return Kind == k_Immediate; } + bool isMem() const override { return false; } + bool isSImm9() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val >= -256 && Val < 256); + } + bool isSImm7s4() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val >= -256 && Val <= 252 && (Val & 3) == 0); + } + bool isSImm7s8() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val >= -512 && Val <= 504 && (Val & 7) == 0); + } + bool isSImm7s16() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val >= -1024 && Val <= 1008 && (Val & 15) == 0); + } + + bool isSymbolicUImm12Offset(const MCExpr *Expr, unsigned Scale) const { + AArch64MCExpr::VariantKind ELFRefKind; + MCSymbolRefExpr::VariantKind DarwinRefKind; + int64_t Addend; + if (!AArch64AsmParser::classifySymbolRef(Expr, ELFRefKind, DarwinRefKind, + Addend)) { + // If we don't understand the expression, assume the best and + // let the fixup and relocation code deal with it. + return true; + } + + if (DarwinRefKind == MCSymbolRefExpr::VK_PAGEOFF || + ELFRefKind == AArch64MCExpr::VK_LO12 || + ELFRefKind == AArch64MCExpr::VK_GOT_LO12 || + ELFRefKind == AArch64MCExpr::VK_DTPREL_LO12 || + ELFRefKind == AArch64MCExpr::VK_DTPREL_LO12_NC || + ELFRefKind == AArch64MCExpr::VK_TPREL_LO12 || + ELFRefKind == AArch64MCExpr::VK_TPREL_LO12_NC || + ELFRefKind == AArch64MCExpr::VK_GOTTPREL_LO12_NC || + ELFRefKind == AArch64MCExpr::VK_TLSDESC_LO12) { + // Note that we don't range-check the addend. It's adjusted modulo page + // size when converted, so there is no "out of range" condition when using + // @pageoff. + return Addend >= 0 && (Addend % Scale) == 0; + } else if (DarwinRefKind == MCSymbolRefExpr::VK_GOTPAGEOFF || + DarwinRefKind == MCSymbolRefExpr::VK_TLVPPAGEOFF) { + // @gotpageoff/@tlvppageoff can only be used directly, not with an addend. + return Addend == 0; + } + + return false; + } + + template <int Scale> bool isUImm12Offset() const { + if (!isImm()) + return false; + + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return isSymbolicUImm12Offset(getImm(), Scale); + + int64_t Val = MCE->getValue(); + return (Val % Scale) == 0 && Val >= 0 && (Val / Scale) < 0x1000; + } + + bool isImm0_1() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val >= 0 && Val < 2); + } + bool isImm0_7() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val >= 0 && Val < 8); + } + bool isImm1_8() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val > 0 && Val < 9); + } + bool isImm0_15() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val >= 0 && Val < 16); + } + bool isImm1_16() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val > 0 && Val < 17); + } + bool isImm0_31() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val >= 0 && Val < 32); + } + bool isImm1_31() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val >= 1 && Val < 32); + } + bool isImm1_32() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val >= 1 && Val < 33); + } + bool isImm0_63() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val >= 0 && Val < 64); + } + bool isImm1_63() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val >= 1 && Val < 64); + } + bool isImm1_64() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val >= 1 && Val < 65); + } + bool isImm0_127() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val >= 0 && Val < 128); + } + bool isImm0_255() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val >= 0 && Val < 256); + } + bool isImm0_65535() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val >= 0 && Val < 65536); + } + bool isImm32_63() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + return (Val >= 32 && Val < 64); + } + bool isLogicalImm32() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = MCE->getValue(); + if (Val >> 32 != 0 && Val >> 32 != ~0LL) + return false; + Val &= 0xFFFFFFFF; + return AArch64_AM::isLogicalImmediate(Val, 32); + } + bool isLogicalImm64() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + return AArch64_AM::isLogicalImmediate(MCE->getValue(), 64); + } + bool isLogicalImm32Not() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + int64_t Val = ~MCE->getValue() & 0xFFFFFFFF; + return AArch64_AM::isLogicalImmediate(Val, 32); + } + bool isLogicalImm64Not() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + return AArch64_AM::isLogicalImmediate(~MCE->getValue(), 64); + } + bool isShiftedImm() const { return Kind == k_ShiftedImm; } + bool isAddSubImm() const { + if (!isShiftedImm() && !isImm()) + return false; + + const MCExpr *Expr; + + // An ADD/SUB shifter is either 'lsl #0' or 'lsl #12'. + if (isShiftedImm()) { + unsigned Shift = ShiftedImm.ShiftAmount; + Expr = ShiftedImm.Val; + if (Shift != 0 && Shift != 12) + return false; + } else { + Expr = getImm(); + } + + AArch64MCExpr::VariantKind ELFRefKind; + MCSymbolRefExpr::VariantKind DarwinRefKind; + int64_t Addend; + if (AArch64AsmParser::classifySymbolRef(Expr, ELFRefKind, + DarwinRefKind, Addend)) { + return DarwinRefKind == MCSymbolRefExpr::VK_PAGEOFF + || DarwinRefKind == MCSymbolRefExpr::VK_TLVPPAGEOFF + || (DarwinRefKind == MCSymbolRefExpr::VK_GOTPAGEOFF && Addend == 0) + || ELFRefKind == AArch64MCExpr::VK_LO12 + || ELFRefKind == AArch64MCExpr::VK_DTPREL_HI12 + || ELFRefKind == AArch64MCExpr::VK_DTPREL_LO12 + || ELFRefKind == AArch64MCExpr::VK_DTPREL_LO12_NC + || ELFRefKind == AArch64MCExpr::VK_TPREL_HI12 + || ELFRefKind == AArch64MCExpr::VK_TPREL_LO12 + || ELFRefKind == AArch64MCExpr::VK_TPREL_LO12_NC + || ELFRefKind == AArch64MCExpr::VK_TLSDESC_LO12; + } + + // Otherwise it should be a real immediate in range: + const MCConstantExpr *CE = cast<MCConstantExpr>(Expr); + return CE->getValue() >= 0 && CE->getValue() <= 0xfff; + } + bool isAddSubImmNeg() const { + if (!isShiftedImm() && !isImm()) + return false; + + const MCExpr *Expr; + + // An ADD/SUB shifter is either 'lsl #0' or 'lsl #12'. + if (isShiftedImm()) { + unsigned Shift = ShiftedImm.ShiftAmount; + Expr = ShiftedImm.Val; + if (Shift != 0 && Shift != 12) + return false; + } else + Expr = getImm(); + + // Otherwise it should be a real negative immediate in range: + const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr); + return CE != nullptr && CE->getValue() < 0 && -CE->getValue() <= 0xfff; + } + bool isCondCode() const { return Kind == k_CondCode; } + bool isSIMDImmType10() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return false; + return AArch64_AM::isAdvSIMDModImmType10(MCE->getValue()); + } + bool isBranchTarget26() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return true; + int64_t Val = MCE->getValue(); + if (Val & 0x3) + return false; + return (Val >= -(0x2000000 << 2) && Val <= (0x1ffffff << 2)); + } + bool isPCRelLabel19() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return true; + int64_t Val = MCE->getValue(); + if (Val & 0x3) + return false; + return (Val >= -(0x40000 << 2) && Val <= (0x3ffff << 2)); + } + bool isBranchTarget14() const { + if (!isImm()) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + return true; + int64_t Val = MCE->getValue(); + if (Val & 0x3) + return false; + return (Val >= -(0x2000 << 2) && Val <= (0x1fff << 2)); + } + + bool + isMovWSymbol(ArrayRef<AArch64MCExpr::VariantKind> AllowedModifiers) const { + if (!isImm()) + return false; + + AArch64MCExpr::VariantKind ELFRefKind; + MCSymbolRefExpr::VariantKind DarwinRefKind; + int64_t Addend; + if (!AArch64AsmParser::classifySymbolRef(getImm(), ELFRefKind, + DarwinRefKind, Addend)) { + return false; + } + if (DarwinRefKind != MCSymbolRefExpr::VK_None) + return false; + + for (unsigned i = 0; i != AllowedModifiers.size(); ++i) { + if (ELFRefKind == AllowedModifiers[i]) + return Addend == 0; + } + + return false; + } + + bool isMovZSymbolG3() const { + return isMovWSymbol(AArch64MCExpr::VK_ABS_G3); + } + + bool isMovZSymbolG2() const { + return isMovWSymbol({AArch64MCExpr::VK_ABS_G2, AArch64MCExpr::VK_ABS_G2_S, + AArch64MCExpr::VK_TPREL_G2, + AArch64MCExpr::VK_DTPREL_G2}); + } + + bool isMovZSymbolG1() const { + return isMovWSymbol({ + AArch64MCExpr::VK_ABS_G1, AArch64MCExpr::VK_ABS_G1_S, + AArch64MCExpr::VK_GOTTPREL_G1, AArch64MCExpr::VK_TPREL_G1, + AArch64MCExpr::VK_DTPREL_G1, + }); + } + + bool isMovZSymbolG0() const { + return isMovWSymbol({AArch64MCExpr::VK_ABS_G0, AArch64MCExpr::VK_ABS_G0_S, + AArch64MCExpr::VK_TPREL_G0, + AArch64MCExpr::VK_DTPREL_G0}); + } + + bool isMovKSymbolG3() const { + return isMovWSymbol(AArch64MCExpr::VK_ABS_G3); + } + + bool isMovKSymbolG2() const { + return isMovWSymbol(AArch64MCExpr::VK_ABS_G2_NC); + } + + bool isMovKSymbolG1() const { + return isMovWSymbol({AArch64MCExpr::VK_ABS_G1_NC, + AArch64MCExpr::VK_TPREL_G1_NC, + AArch64MCExpr::VK_DTPREL_G1_NC}); + } + + bool isMovKSymbolG0() const { + return isMovWSymbol( + {AArch64MCExpr::VK_ABS_G0_NC, AArch64MCExpr::VK_GOTTPREL_G0_NC, + AArch64MCExpr::VK_TPREL_G0_NC, AArch64MCExpr::VK_DTPREL_G0_NC}); + } + + template<int RegWidth, int Shift> + bool isMOVZMovAlias() const { + if (!isImm()) return false; + + const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); + if (!CE) return false; + uint64_t Value = CE->getValue(); + + if (RegWidth == 32) + Value &= 0xffffffffULL; + + // "lsl #0" takes precedence: in practice this only affects "#0, lsl #0". + if (Value == 0 && Shift != 0) + return false; + + return (Value & ~(0xffffULL << Shift)) == 0; + } + + template<int RegWidth, int Shift> + bool isMOVNMovAlias() const { + if (!isImm()) return false; + + const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); + if (!CE) return false; + uint64_t Value = CE->getValue(); + + // MOVZ takes precedence over MOVN. + for (int MOVZShift = 0; MOVZShift <= 48; MOVZShift += 16) + if ((Value & ~(0xffffULL << MOVZShift)) == 0) + return false; + + Value = ~Value; + if (RegWidth == 32) + Value &= 0xffffffffULL; + + return (Value & ~(0xffffULL << Shift)) == 0; + } + + bool isFPImm() const { return Kind == k_FPImm; } + bool isBarrier() const { return Kind == k_Barrier; } + bool isSysReg() const { return Kind == k_SysReg; } + bool isMRSSystemRegister() const { + if (!isSysReg()) return false; + + return SysReg.MRSReg != -1U; + } + bool isMSRSystemRegister() const { + if (!isSysReg()) return false; + return SysReg.MSRReg != -1U; + } + bool isSystemPStateFieldWithImm0_1() const { + if (!isSysReg()) return false; + return (SysReg.PStateField == AArch64PState::PAN || + SysReg.PStateField == AArch64PState::UAO); + } + bool isSystemPStateFieldWithImm0_15() const { + if (!isSysReg() || isSystemPStateFieldWithImm0_1()) return false; + return SysReg.PStateField != -1U; + } + bool isReg() const override { return Kind == k_Register && !Reg.isVector; } + bool isVectorReg() const { return Kind == k_Register && Reg.isVector; } + bool isVectorRegLo() const { + return Kind == k_Register && Reg.isVector && + AArch64MCRegisterClasses[AArch64::FPR128_loRegClassID].contains( + Reg.RegNum); + } + bool isGPR32as64() const { + return Kind == k_Register && !Reg.isVector && + AArch64MCRegisterClasses[AArch64::GPR64RegClassID].contains(Reg.RegNum); + } + bool isWSeqPair() const { + return Kind == k_Register && !Reg.isVector && + AArch64MCRegisterClasses[AArch64::WSeqPairsClassRegClassID].contains( + Reg.RegNum); + } + bool isXSeqPair() const { + return Kind == k_Register && !Reg.isVector && + AArch64MCRegisterClasses[AArch64::XSeqPairsClassRegClassID].contains( + Reg.RegNum); + } + + bool isGPR64sp0() const { + return Kind == k_Register && !Reg.isVector && + AArch64MCRegisterClasses[AArch64::GPR64spRegClassID].contains(Reg.RegNum); + } + + /// Is this a vector list with the type implicit (presumably attached to the + /// instruction itself)? + template <unsigned NumRegs> bool isImplicitlyTypedVectorList() const { + return Kind == k_VectorList && VectorList.Count == NumRegs && + !VectorList.ElementKind; + } + + template <unsigned NumRegs, unsigned NumElements, char ElementKind> + bool isTypedVectorList() const { + if (Kind != k_VectorList) + return false; + if (VectorList.Count != NumRegs) + return false; + if (VectorList.ElementKind != ElementKind) + return false; + return VectorList.NumElements == NumElements; + } + + bool isVectorIndex1() const { + return Kind == k_VectorIndex && VectorIndex.Val == 1; + } + bool isVectorIndexB() const { + return Kind == k_VectorIndex && VectorIndex.Val < 16; + } + bool isVectorIndexH() const { + return Kind == k_VectorIndex && VectorIndex.Val < 8; + } + bool isVectorIndexS() const { + return Kind == k_VectorIndex && VectorIndex.Val < 4; + } + bool isVectorIndexD() const { + return Kind == k_VectorIndex && VectorIndex.Val < 2; + } + bool isToken() const override { return Kind == k_Token; } + bool isTokenEqual(StringRef Str) const { + return Kind == k_Token && getToken() == Str; + } + bool isSysCR() const { return Kind == k_SysCR; } + bool isPrefetch() const { return Kind == k_Prefetch; } + bool isPSBHint() const { return Kind == k_PSBHint; } + bool isShiftExtend() const { return Kind == k_ShiftExtend; } + bool isShifter() const { + if (!isShiftExtend()) + return false; + + AArch64_AM::ShiftExtendType ST = getShiftExtendType(); + return (ST == AArch64_AM::LSL || ST == AArch64_AM::LSR || + ST == AArch64_AM::ASR || ST == AArch64_AM::ROR || + ST == AArch64_AM::MSL); + } + bool isExtend() const { + if (!isShiftExtend()) + return false; + + AArch64_AM::ShiftExtendType ET = getShiftExtendType(); + return (ET == AArch64_AM::UXTB || ET == AArch64_AM::SXTB || + ET == AArch64_AM::UXTH || ET == AArch64_AM::SXTH || + ET == AArch64_AM::UXTW || ET == AArch64_AM::SXTW || + ET == AArch64_AM::UXTX || ET == AArch64_AM::SXTX || + ET == AArch64_AM::LSL) && + getShiftExtendAmount() <= 4; + } + + bool isExtend64() const { + if (!isExtend()) + return false; + // UXTX and SXTX require a 64-bit source register (the ExtendLSL64 class). + AArch64_AM::ShiftExtendType ET = getShiftExtendType(); + return ET != AArch64_AM::UXTX && ET != AArch64_AM::SXTX; + } + bool isExtendLSL64() const { + if (!isExtend()) + return false; + AArch64_AM::ShiftExtendType ET = getShiftExtendType(); + return (ET == AArch64_AM::UXTX || ET == AArch64_AM::SXTX || + ET == AArch64_AM::LSL) && + getShiftExtendAmount() <= 4; + } + + template<int Width> bool isMemXExtend() const { + if (!isExtend()) + return false; + AArch64_AM::ShiftExtendType ET = getShiftExtendType(); + return (ET == AArch64_AM::LSL || ET == AArch64_AM::SXTX) && + (getShiftExtendAmount() == Log2_32(Width / 8) || + getShiftExtendAmount() == 0); + } + + template<int Width> bool isMemWExtend() const { + if (!isExtend()) + return false; + AArch64_AM::ShiftExtendType ET = getShiftExtendType(); + return (ET == AArch64_AM::UXTW || ET == AArch64_AM::SXTW) && + (getShiftExtendAmount() == Log2_32(Width / 8) || + getShiftExtendAmount() == 0); + } + + template <unsigned width> + bool isArithmeticShifter() const { + if (!isShifter()) + return false; + + // An arithmetic shifter is LSL, LSR, or ASR. + AArch64_AM::ShiftExtendType ST = getShiftExtendType(); + return (ST == AArch64_AM::LSL || ST == AArch64_AM::LSR || + ST == AArch64_AM::ASR) && getShiftExtendAmount() < width; + } + + template <unsigned width> + bool isLogicalShifter() const { + if (!isShifter()) + return false; + + // A logical shifter is LSL, LSR, ASR or ROR. + AArch64_AM::ShiftExtendType ST = getShiftExtendType(); + return (ST == AArch64_AM::LSL || ST == AArch64_AM::LSR || + ST == AArch64_AM::ASR || ST == AArch64_AM::ROR) && + getShiftExtendAmount() < width; + } + + bool isMovImm32Shifter() const { + if (!isShifter()) + return false; + + // A MOVi shifter is LSL of 0, 16, 32, or 48. + AArch64_AM::ShiftExtendType ST = getShiftExtendType(); + if (ST != AArch64_AM::LSL) + return false; + uint64_t Val = getShiftExtendAmount(); + return (Val == 0 || Val == 16); + } + + bool isMovImm64Shifter() const { + if (!isShifter()) + return false; + + // A MOVi shifter is LSL of 0 or 16. + AArch64_AM::ShiftExtendType ST = getShiftExtendType(); + if (ST != AArch64_AM::LSL) + return false; + uint64_t Val = getShiftExtendAmount(); + return (Val == 0 || Val == 16 || Val == 32 || Val == 48); + } + + bool isLogicalVecShifter() const { + if (!isShifter()) + return false; + + // A logical vector shifter is a left shift by 0, 8, 16, or 24. + unsigned Shift = getShiftExtendAmount(); + return getShiftExtendType() == AArch64_AM::LSL && + (Shift == 0 || Shift == 8 || Shift == 16 || Shift == 24); + } + + bool isLogicalVecHalfWordShifter() const { + if (!isLogicalVecShifter()) + return false; + + // A logical vector shifter is a left shift by 0 or 8. + unsigned Shift = getShiftExtendAmount(); + return getShiftExtendType() == AArch64_AM::LSL && + (Shift == 0 || Shift == 8); + } + + bool isMoveVecShifter() const { + if (!isShiftExtend()) + return false; + + // A logical vector shifter is a left shift by 8 or 16. + unsigned Shift = getShiftExtendAmount(); + return getShiftExtendType() == AArch64_AM::MSL && + (Shift == 8 || Shift == 16); + } + + // Fallback unscaled operands are for aliases of LDR/STR that fall back + // to LDUR/STUR when the offset is not legal for the former but is for + // the latter. As such, in addition to checking for being a legal unscaled + // address, also check that it is not a legal scaled address. This avoids + // ambiguity in the matcher. + template<int Width> + bool isSImm9OffsetFB() const { + return isSImm9() && !isUImm12Offset<Width / 8>(); + } + + bool isAdrpLabel() const { + // Validation was handled during parsing, so we just sanity check that + // something didn't go haywire. + if (!isImm()) + return false; + + if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm.Val)) { + int64_t Val = CE->getValue(); + int64_t Min = - (4096 * (1LL << (21 - 1))); + int64_t Max = 4096 * ((1LL << (21 - 1)) - 1); + return (Val % 4096) == 0 && Val >= Min && Val <= Max; + } + + return true; + } + + bool isAdrLabel() const { + // Validation was handled during parsing, so we just sanity check that + // something didn't go haywire. + if (!isImm()) + return false; + + if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm.Val)) { + int64_t Val = CE->getValue(); + int64_t Min = - (1LL << (21 - 1)); + int64_t Max = ((1LL << (21 - 1)) - 1); + return Val >= Min && Val <= Max; + } + + return true; + } + + 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 addRegOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + Inst.addOperand(MCOperand::createReg(getReg())); + } + + void addGPR32as64Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + assert( + AArch64MCRegisterClasses[AArch64::GPR64RegClassID].contains(getReg())); + + const MCRegisterInfo *RI = Ctx.getRegisterInfo(); + uint32_t Reg = RI->getRegClass(AArch64::GPR32RegClassID).getRegister( + RI->getEncodingValue(getReg())); + + Inst.addOperand(MCOperand::createReg(Reg)); + } + + void addVectorReg64Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + assert( + AArch64MCRegisterClasses[AArch64::FPR128RegClassID].contains(getReg())); + Inst.addOperand(MCOperand::createReg(AArch64::D0 + getReg() - AArch64::Q0)); + } + + void addVectorReg128Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + assert( + AArch64MCRegisterClasses[AArch64::FPR128RegClassID].contains(getReg())); + Inst.addOperand(MCOperand::createReg(getReg())); + } + + void addVectorRegLoOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + Inst.addOperand(MCOperand::createReg(getReg())); + } + + template <unsigned NumRegs> + void addVectorList64Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + static const unsigned FirstRegs[] = { AArch64::D0, + AArch64::D0_D1, + AArch64::D0_D1_D2, + AArch64::D0_D1_D2_D3 }; + unsigned FirstReg = FirstRegs[NumRegs - 1]; + + Inst.addOperand( + MCOperand::createReg(FirstReg + getVectorListStart() - AArch64::Q0)); + } + + template <unsigned NumRegs> + void addVectorList128Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + static const unsigned FirstRegs[] = { AArch64::Q0, + AArch64::Q0_Q1, + AArch64::Q0_Q1_Q2, + AArch64::Q0_Q1_Q2_Q3 }; + unsigned FirstReg = FirstRegs[NumRegs - 1]; + + Inst.addOperand( + MCOperand::createReg(FirstReg + getVectorListStart() - AArch64::Q0)); + } + + void addVectorIndex1Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + Inst.addOperand(MCOperand::createImm(getVectorIndex())); + } + + void addVectorIndexBOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + Inst.addOperand(MCOperand::createImm(getVectorIndex())); + } + + void addVectorIndexHOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + Inst.addOperand(MCOperand::createImm(getVectorIndex())); + } + + void addVectorIndexSOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + Inst.addOperand(MCOperand::createImm(getVectorIndex())); + } + + void addVectorIndexDOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + Inst.addOperand(MCOperand::createImm(getVectorIndex())); + } + + void addImmOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + // If this is a pageoff symrefexpr with an addend, adjust the addend + // to be only the page-offset portion. Otherwise, just add the expr + // as-is. + addExpr(Inst, getImm()); + } + + void addAddSubImmOperands(MCInst &Inst, unsigned N) const { + assert(N == 2 && "Invalid number of operands!"); + if (isShiftedImm()) { + addExpr(Inst, getShiftedImmVal()); + Inst.addOperand(MCOperand::createImm(getShiftedImmShift())); + } else { + addExpr(Inst, getImm()); + Inst.addOperand(MCOperand::createImm(0)); + } + } + + void addAddSubImmNegOperands(MCInst &Inst, unsigned N) const { + assert(N == 2 && "Invalid number of operands!"); + + const MCExpr *MCE = isShiftedImm() ? getShiftedImmVal() : getImm(); + const MCConstantExpr *CE = cast<MCConstantExpr>(MCE); + int64_t Val = -CE->getValue(); + unsigned ShiftAmt = isShiftedImm() ? ShiftedImm.ShiftAmount : 0; + + Inst.addOperand(MCOperand::createImm(Val)); + Inst.addOperand(MCOperand::createImm(ShiftAmt)); + } + + void addCondCodeOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + Inst.addOperand(MCOperand::createImm(getCondCode())); + } + + void addAdrpLabelOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) + addExpr(Inst, getImm()); + else + Inst.addOperand(MCOperand::createImm(MCE->getValue() >> 12)); + } + + void addAdrLabelOperands(MCInst &Inst, unsigned N) const { + addImmOperands(Inst, N); + } + + template<int Scale> + void addUImm12OffsetOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + + if (!MCE) { + Inst.addOperand(MCOperand::createExpr(getImm())); + return; + } + Inst.addOperand(MCOperand::createImm(MCE->getValue() / Scale)); + } + + void addSImm9Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + Inst.addOperand(MCOperand::createImm(MCE->getValue())); + } + + void addSImm7s4Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + Inst.addOperand(MCOperand::createImm(MCE->getValue() / 4)); + } + + void addSImm7s8Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + Inst.addOperand(MCOperand::createImm(MCE->getValue() / 8)); + } + + void addSImm7s16Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + Inst.addOperand(MCOperand::createImm(MCE->getValue() / 16)); + } + + void addImm0_1Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + Inst.addOperand(MCOperand::createImm(MCE->getValue())); + } + + void addImm0_7Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + Inst.addOperand(MCOperand::createImm(MCE->getValue())); + } + + void addImm1_8Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + Inst.addOperand(MCOperand::createImm(MCE->getValue())); + } + + void addImm0_15Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + Inst.addOperand(MCOperand::createImm(MCE->getValue())); + } + + void addImm1_16Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + assert(MCE && "Invalid constant immediate operand!"); + Inst.addOperand(MCOperand::createImm(MCE->getValue())); + } + + void addImm0_31Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + Inst.addOperand(MCOperand::createImm(MCE->getValue())); + } + + void addImm1_31Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + Inst.addOperand(MCOperand::createImm(MCE->getValue())); + } + + void addImm1_32Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + Inst.addOperand(MCOperand::createImm(MCE->getValue())); + } + + void addImm0_63Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + Inst.addOperand(MCOperand::createImm(MCE->getValue())); + } + + void addImm1_63Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + Inst.addOperand(MCOperand::createImm(MCE->getValue())); + } + + void addImm1_64Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + Inst.addOperand(MCOperand::createImm(MCE->getValue())); + } + + void addImm0_127Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + Inst.addOperand(MCOperand::createImm(MCE->getValue())); + } + + void addImm0_255Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + Inst.addOperand(MCOperand::createImm(MCE->getValue())); + } + + void addImm0_65535Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + Inst.addOperand(MCOperand::createImm(MCE->getValue())); + } + + void addImm32_63Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + Inst.addOperand(MCOperand::createImm(MCE->getValue())); + } + + void addLogicalImm32Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + uint64_t encoding = + AArch64_AM::encodeLogicalImmediate(MCE->getValue() & 0xFFFFFFFF, 32); + Inst.addOperand(MCOperand::createImm(encoding)); + } + + void addLogicalImm64Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + uint64_t encoding = AArch64_AM::encodeLogicalImmediate(MCE->getValue(), 64); + Inst.addOperand(MCOperand::createImm(encoding)); + } + + void addLogicalImm32NotOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + int64_t Val = ~MCE->getValue() & 0xFFFFFFFF; + uint64_t encoding = AArch64_AM::encodeLogicalImmediate(Val, 32); + Inst.addOperand(MCOperand::createImm(encoding)); + } + + void addLogicalImm64NotOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + uint64_t encoding = + AArch64_AM::encodeLogicalImmediate(~MCE->getValue(), 64); + Inst.addOperand(MCOperand::createImm(encoding)); + } + + void addSIMDImmType10Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = cast<MCConstantExpr>(getImm()); + uint64_t encoding = AArch64_AM::encodeAdvSIMDModImmType10(MCE->getValue()); + Inst.addOperand(MCOperand::createImm(encoding)); + } + + void addBranchTarget26Operands(MCInst &Inst, unsigned N) const { + // Branch operands don't encode the low bits, so shift them off + // here. If it's a label, however, just put it on directly as there's + // not enough information now to do anything. + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) { + addExpr(Inst, getImm()); + return; + } + assert(MCE && "Invalid constant immediate operand!"); + Inst.addOperand(MCOperand::createImm(MCE->getValue() >> 2)); + } + + void addPCRelLabel19Operands(MCInst &Inst, unsigned N) const { + // Branch operands don't encode the low bits, so shift them off + // here. If it's a label, however, just put it on directly as there's + // not enough information now to do anything. + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) { + addExpr(Inst, getImm()); + return; + } + assert(MCE && "Invalid constant immediate operand!"); + Inst.addOperand(MCOperand::createImm(MCE->getValue() >> 2)); + } + + void addBranchTarget14Operands(MCInst &Inst, unsigned N) const { + // Branch operands don't encode the low bits, so shift them off + // here. If it's a label, however, just put it on directly as there's + // not enough information now to do anything. + assert(N == 1 && "Invalid number of operands!"); + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(getImm()); + if (!MCE) { + addExpr(Inst, getImm()); + return; + } + assert(MCE && "Invalid constant immediate operand!"); + Inst.addOperand(MCOperand::createImm(MCE->getValue() >> 2)); + } + + void addFPImmOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + Inst.addOperand(MCOperand::createImm(getFPImm())); + } + + void addBarrierOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + Inst.addOperand(MCOperand::createImm(getBarrier())); + } + + void addMRSSystemRegisterOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + + Inst.addOperand(MCOperand::createImm(SysReg.MRSReg)); + } + + void addMSRSystemRegisterOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + + Inst.addOperand(MCOperand::createImm(SysReg.MSRReg)); + } + + void addSystemPStateFieldWithImm0_1Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + + Inst.addOperand(MCOperand::createImm(SysReg.PStateField)); + } + + void addSystemPStateFieldWithImm0_15Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + + Inst.addOperand(MCOperand::createImm(SysReg.PStateField)); + } + + void addSysCROperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + Inst.addOperand(MCOperand::createImm(getSysCR())); + } + + void addPrefetchOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + Inst.addOperand(MCOperand::createImm(getPrefetch())); + } + + void addPSBHintOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + Inst.addOperand(MCOperand::createImm(getPSBHint())); + } + + void addShifterOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + unsigned Imm = + AArch64_AM::getShifterImm(getShiftExtendType(), getShiftExtendAmount()); + Inst.addOperand(MCOperand::createImm(Imm)); + } + + void addExtendOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + AArch64_AM::ShiftExtendType ET = getShiftExtendType(); + if (ET == AArch64_AM::LSL) ET = AArch64_AM::UXTW; + unsigned Imm = AArch64_AM::getArithExtendImm(ET, getShiftExtendAmount()); + Inst.addOperand(MCOperand::createImm(Imm)); + } + + void addExtend64Operands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + AArch64_AM::ShiftExtendType ET = getShiftExtendType(); + if (ET == AArch64_AM::LSL) ET = AArch64_AM::UXTX; + unsigned Imm = AArch64_AM::getArithExtendImm(ET, getShiftExtendAmount()); + Inst.addOperand(MCOperand::createImm(Imm)); + } + + void addMemExtendOperands(MCInst &Inst, unsigned N) const { + assert(N == 2 && "Invalid number of operands!"); + AArch64_AM::ShiftExtendType ET = getShiftExtendType(); + bool IsSigned = ET == AArch64_AM::SXTW || ET == AArch64_AM::SXTX; + Inst.addOperand(MCOperand::createImm(IsSigned)); + Inst.addOperand(MCOperand::createImm(getShiftExtendAmount() != 0)); + } + + // For 8-bit load/store instructions with a register offset, both the + // "DoShift" and "NoShift" variants have a shift of 0. Because of this, + // they're disambiguated by whether the shift was explicit or implicit rather + // than its size. + void addMemExtend8Operands(MCInst &Inst, unsigned N) const { + assert(N == 2 && "Invalid number of operands!"); + AArch64_AM::ShiftExtendType ET = getShiftExtendType(); + bool IsSigned = ET == AArch64_AM::SXTW || ET == AArch64_AM::SXTX; + Inst.addOperand(MCOperand::createImm(IsSigned)); + Inst.addOperand(MCOperand::createImm(hasShiftExtendAmount())); + } + + template<int Shift> + void addMOVZMovAliasOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + + const MCConstantExpr *CE = cast<MCConstantExpr>(getImm()); + uint64_t Value = CE->getValue(); + Inst.addOperand(MCOperand::createImm((Value >> Shift) & 0xffff)); + } + + template<int Shift> + void addMOVNMovAliasOperands(MCInst &Inst, unsigned N) const { + assert(N == 1 && "Invalid number of operands!"); + + const MCConstantExpr *CE = cast<MCConstantExpr>(getImm()); + uint64_t Value = CE->getValue(); + Inst.addOperand(MCOperand::createImm((~Value >> Shift) & 0xffff)); + } + + void print(raw_ostream &OS) const override; + + static std::unique_ptr<AArch64Operand> + CreateToken(StringRef Str, bool IsSuffix, SMLoc S, MCContext &Ctx) { + auto Op = make_unique<AArch64Operand>(k_Token, Ctx); + Op->Tok.Data = Str.data(); + Op->Tok.Length = Str.size(); + Op->Tok.IsSuffix = IsSuffix; + Op->StartLoc = S; + Op->EndLoc = S; + return Op; + } + + static std::unique_ptr<AArch64Operand> + CreateReg(unsigned RegNum, bool isVector, SMLoc S, SMLoc E, MCContext &Ctx) { + auto Op = make_unique<AArch64Operand>(k_Register, Ctx); + Op->Reg.RegNum = RegNum; + Op->Reg.isVector = isVector; + Op->StartLoc = S; + Op->EndLoc = E; + return Op; + } + + static std::unique_ptr<AArch64Operand> + CreateVectorList(unsigned RegNum, unsigned Count, unsigned NumElements, + char ElementKind, SMLoc S, SMLoc E, MCContext &Ctx) { + auto Op = make_unique<AArch64Operand>(k_VectorList, Ctx); + Op->VectorList.RegNum = RegNum; + Op->VectorList.Count = Count; + Op->VectorList.NumElements = NumElements; + Op->VectorList.ElementKind = ElementKind; + Op->StartLoc = S; + Op->EndLoc = E; + return Op; + } + + static std::unique_ptr<AArch64Operand> + CreateVectorIndex(unsigned Idx, SMLoc S, SMLoc E, MCContext &Ctx) { + auto Op = make_unique<AArch64Operand>(k_VectorIndex, Ctx); + Op->VectorIndex.Val = Idx; + Op->StartLoc = S; + Op->EndLoc = E; + return Op; + } + + static std::unique_ptr<AArch64Operand> CreateImm(const MCExpr *Val, SMLoc S, + SMLoc E, MCContext &Ctx) { + auto Op = make_unique<AArch64Operand>(k_Immediate, Ctx); + Op->Imm.Val = Val; + Op->StartLoc = S; + Op->EndLoc = E; + return Op; + } + + static std::unique_ptr<AArch64Operand> CreateShiftedImm(const MCExpr *Val, + unsigned ShiftAmount, + SMLoc S, SMLoc E, + MCContext &Ctx) { + auto Op = make_unique<AArch64Operand>(k_ShiftedImm, Ctx); + Op->ShiftedImm .Val = Val; + Op->ShiftedImm.ShiftAmount = ShiftAmount; + Op->StartLoc = S; + Op->EndLoc = E; + return Op; + } + + static std::unique_ptr<AArch64Operand> + CreateCondCode(AArch64CC::CondCode Code, SMLoc S, SMLoc E, MCContext &Ctx) { + auto Op = make_unique<AArch64Operand>(k_CondCode, Ctx); + Op->CondCode.Code = Code; + Op->StartLoc = S; + Op->EndLoc = E; + return Op; + } + + static std::unique_ptr<AArch64Operand> CreateFPImm(unsigned Val, SMLoc S, + MCContext &Ctx) { + auto Op = make_unique<AArch64Operand>(k_FPImm, Ctx); + Op->FPImm.Val = Val; + Op->StartLoc = S; + Op->EndLoc = S; + return Op; + } + + static std::unique_ptr<AArch64Operand> CreateBarrier(unsigned Val, + StringRef Str, + SMLoc S, + MCContext &Ctx) { + auto Op = make_unique<AArch64Operand>(k_Barrier, Ctx); + Op->Barrier.Val = Val; + Op->Barrier.Data = Str.data(); + Op->Barrier.Length = Str.size(); + Op->StartLoc = S; + Op->EndLoc = S; + return Op; + } + + static std::unique_ptr<AArch64Operand> CreateSysReg(StringRef Str, SMLoc S, + uint32_t MRSReg, + uint32_t MSRReg, + uint32_t PStateField, + MCContext &Ctx) { + auto Op = make_unique<AArch64Operand>(k_SysReg, Ctx); + Op->SysReg.Data = Str.data(); + Op->SysReg.Length = Str.size(); + Op->SysReg.MRSReg = MRSReg; + Op->SysReg.MSRReg = MSRReg; + Op->SysReg.PStateField = PStateField; + Op->StartLoc = S; + Op->EndLoc = S; + return Op; + } + + static std::unique_ptr<AArch64Operand> CreateSysCR(unsigned Val, SMLoc S, + SMLoc E, MCContext &Ctx) { + auto Op = make_unique<AArch64Operand>(k_SysCR, Ctx); + Op->SysCRImm.Val = Val; + Op->StartLoc = S; + Op->EndLoc = E; + return Op; + } + + static std::unique_ptr<AArch64Operand> CreatePrefetch(unsigned Val, + StringRef Str, + SMLoc S, + MCContext &Ctx) { + auto Op = make_unique<AArch64Operand>(k_Prefetch, Ctx); + Op->Prefetch.Val = Val; + Op->Barrier.Data = Str.data(); + Op->Barrier.Length = Str.size(); + Op->StartLoc = S; + Op->EndLoc = S; + return Op; + } + + static std::unique_ptr<AArch64Operand> CreatePSBHint(unsigned Val, + StringRef Str, + SMLoc S, + MCContext &Ctx) { + auto Op = make_unique<AArch64Operand>(k_PSBHint, Ctx); + Op->PSBHint.Val = Val; + Op->PSBHint.Data = Str.data(); + Op->PSBHint.Length = Str.size(); + Op->StartLoc = S; + Op->EndLoc = S; + return Op; + } + + static std::unique_ptr<AArch64Operand> + CreateShiftExtend(AArch64_AM::ShiftExtendType ShOp, unsigned Val, + bool HasExplicitAmount, SMLoc S, SMLoc E, MCContext &Ctx) { + auto Op = make_unique<AArch64Operand>(k_ShiftExtend, Ctx); + Op->ShiftExtend.Type = ShOp; + Op->ShiftExtend.Amount = Val; + Op->ShiftExtend.HasExplicitAmount = HasExplicitAmount; + Op->StartLoc = S; + Op->EndLoc = E; + return Op; + } +}; + +} // end anonymous namespace. + +void AArch64Operand::print(raw_ostream &OS) const { + switch (Kind) { + case k_FPImm: + OS << "<fpimm " << getFPImm() << "(" + << AArch64_AM::getFPImmFloat(getFPImm()) << ") >"; + break; + case k_Barrier: { + StringRef Name = getBarrierName(); + if (!Name.empty()) + OS << "<barrier " << Name << ">"; + else + OS << "<barrier invalid #" << getBarrier() << ">"; + break; + } + case k_Immediate: + OS << *getImm(); + break; + case k_ShiftedImm: { + unsigned Shift = getShiftedImmShift(); + OS << "<shiftedimm "; + OS << *getShiftedImmVal(); + OS << ", lsl #" << AArch64_AM::getShiftValue(Shift) << ">"; + break; + } + case k_CondCode: + OS << "<condcode " << getCondCode() << ">"; + break; + case k_Register: + OS << "<register " << getReg() << ">"; + break; + case k_VectorList: { + OS << "<vectorlist "; + unsigned Reg = getVectorListStart(); + for (unsigned i = 0, e = getVectorListCount(); i != e; ++i) + OS << Reg + i << " "; + OS << ">"; + break; + } + case k_VectorIndex: + OS << "<vectorindex " << getVectorIndex() << ">"; + break; + case k_SysReg: + OS << "<sysreg: " << getSysReg() << '>'; + break; + case k_Token: + OS << "'" << getToken() << "'"; + break; + case k_SysCR: + OS << "c" << getSysCR(); + break; + case k_Prefetch: { + StringRef Name = getPrefetchName(); + if (!Name.empty()) + OS << "<prfop " << Name << ">"; + else + OS << "<prfop invalid #" << getPrefetch() << ">"; + break; + } + case k_PSBHint: { + OS << getPSBHintName(); + break; + } + case k_ShiftExtend: { + OS << "<" << AArch64_AM::getShiftExtendName(getShiftExtendType()) << " #" + << getShiftExtendAmount(); + if (!hasShiftExtendAmount()) + OS << "<imp>"; + OS << '>'; + break; + } + } +} + +/// @name Auto-generated Match Functions +/// { + +static unsigned MatchRegisterName(StringRef Name); + +/// } + +static unsigned matchVectorRegName(StringRef Name) { + return StringSwitch<unsigned>(Name.lower()) + .Case("v0", AArch64::Q0) + .Case("v1", AArch64::Q1) + .Case("v2", AArch64::Q2) + .Case("v3", AArch64::Q3) + .Case("v4", AArch64::Q4) + .Case("v5", AArch64::Q5) + .Case("v6", AArch64::Q6) + .Case("v7", AArch64::Q7) + .Case("v8", AArch64::Q8) + .Case("v9", AArch64::Q9) + .Case("v10", AArch64::Q10) + .Case("v11", AArch64::Q11) + .Case("v12", AArch64::Q12) + .Case("v13", AArch64::Q13) + .Case("v14", AArch64::Q14) + .Case("v15", AArch64::Q15) + .Case("v16", AArch64::Q16) + .Case("v17", AArch64::Q17) + .Case("v18", AArch64::Q18) + .Case("v19", AArch64::Q19) + .Case("v20", AArch64::Q20) + .Case("v21", AArch64::Q21) + .Case("v22", AArch64::Q22) + .Case("v23", AArch64::Q23) + .Case("v24", AArch64::Q24) + .Case("v25", AArch64::Q25) + .Case("v26", AArch64::Q26) + .Case("v27", AArch64::Q27) + .Case("v28", AArch64::Q28) + .Case("v29", AArch64::Q29) + .Case("v30", AArch64::Q30) + .Case("v31", AArch64::Q31) + .Default(0); +} + +static bool isValidVectorKind(StringRef Name) { + return StringSwitch<bool>(Name.lower()) + .Case(".8b", true) + .Case(".16b", true) + .Case(".4h", true) + .Case(".8h", true) + .Case(".2s", true) + .Case(".4s", true) + .Case(".1d", true) + .Case(".2d", true) + .Case(".1q", true) + // Accept the width neutral ones, too, for verbose syntax. If those + // aren't used in the right places, the token operand won't match so + // all will work out. + .Case(".b", true) + .Case(".h", true) + .Case(".s", true) + .Case(".d", true) + // Needed for fp16 scalar pairwise reductions + .Case(".2h", true) + .Default(false); +} + +static void parseValidVectorKind(StringRef Name, unsigned &NumElements, + char &ElementKind) { + assert(isValidVectorKind(Name)); + + ElementKind = Name.lower()[Name.size() - 1]; + NumElements = 0; + + if (Name.size() == 2) + return; + + // Parse the lane count + Name = Name.drop_front(); + while (isdigit(Name.front())) { + NumElements = 10 * NumElements + (Name.front() - '0'); + Name = Name.drop_front(); + } +} + +bool AArch64AsmParser::ParseRegister(unsigned &RegNo, SMLoc &StartLoc, + SMLoc &EndLoc) { + StartLoc = getLoc(); + RegNo = tryParseRegister(); + EndLoc = SMLoc::getFromPointer(getLoc().getPointer() - 1); + return (RegNo == (unsigned)-1); +} + +// Matches a register name or register alias previously defined by '.req' +unsigned AArch64AsmParser::matchRegisterNameAlias(StringRef Name, + bool isVector) { + unsigned RegNum = isVector ? matchVectorRegName(Name) + : MatchRegisterName(Name); + + if (RegNum == 0) { + // 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. + auto Entry = RegisterReqs.find(Name.lower()); + if (Entry == RegisterReqs.end()) + return 0; + // set RegNum if the match is the right kind of register + if (isVector == Entry->getValue().first) + RegNum = Entry->getValue().second; + } + return RegNum; +} + +/// tryParseRegister - 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 is added to the operand list. +int AArch64AsmParser::tryParseRegister() { + MCAsmParser &Parser = getParser(); + const AsmToken &Tok = Parser.getTok(); + assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier"); + + std::string lowerCase = Tok.getString().lower(); + unsigned RegNum = matchRegisterNameAlias(lowerCase, false); + // Also handle a few aliases of registers. + if (RegNum == 0) + RegNum = StringSwitch<unsigned>(lowerCase) + .Case("fp", AArch64::FP) + .Case("lr", AArch64::LR) + .Case("x31", AArch64::XZR) + .Case("w31", AArch64::WZR) + .Default(0); + + if (RegNum == 0) + return -1; + + Parser.Lex(); // Eat identifier token. + return RegNum; +} + +/// tryMatchVectorRegister - Try to parse a vector register name with optional +/// kind specifier. If it is a register specifier, eat the token and return it. +int AArch64AsmParser::tryMatchVectorRegister(StringRef &Kind, bool expected) { + MCAsmParser &Parser = getParser(); + if (Parser.getTok().isNot(AsmToken::Identifier)) { + TokError("vector register expected"); + return -1; + } + + StringRef Name = Parser.getTok().getString(); + // If there is a kind specifier, it's separated from the register name by + // a '.'. + size_t Start = 0, Next = Name.find('.'); + StringRef Head = Name.slice(Start, Next); + unsigned RegNum = matchRegisterNameAlias(Head, true); + + if (RegNum) { + if (Next != StringRef::npos) { + Kind = Name.slice(Next, StringRef::npos); + if (!isValidVectorKind(Kind)) { + TokError("invalid vector kind qualifier"); + return -1; + } + } + Parser.Lex(); // Eat the register token. + return RegNum; + } + + if (expected) + TokError("vector register expected"); + return -1; +} + +/// tryParseSysCROperand - Try to parse a system instruction CR operand name. +AArch64AsmParser::OperandMatchResultTy +AArch64AsmParser::tryParseSysCROperand(OperandVector &Operands) { + MCAsmParser &Parser = getParser(); + SMLoc S = getLoc(); + + if (Parser.getTok().isNot(AsmToken::Identifier)) { + Error(S, "Expected cN operand where 0 <= N <= 15"); + return MatchOperand_ParseFail; + } + + StringRef Tok = Parser.getTok().getIdentifier(); + if (Tok[0] != 'c' && Tok[0] != 'C') { + Error(S, "Expected cN operand where 0 <= N <= 15"); + return MatchOperand_ParseFail; + } + + uint32_t CRNum; + bool BadNum = Tok.drop_front().getAsInteger(10, CRNum); + if (BadNum || CRNum > 15) { + Error(S, "Expected cN operand where 0 <= N <= 15"); + return MatchOperand_ParseFail; + } + + Parser.Lex(); // Eat identifier token. + Operands.push_back( + AArch64Operand::CreateSysCR(CRNum, S, getLoc(), getContext())); + return MatchOperand_Success; +} + +/// tryParsePrefetch - Try to parse a prefetch operand. +AArch64AsmParser::OperandMatchResultTy +AArch64AsmParser::tryParsePrefetch(OperandVector &Operands) { + MCAsmParser &Parser = getParser(); + SMLoc S = getLoc(); + const AsmToken &Tok = Parser.getTok(); + // Either an identifier for named values or a 5-bit immediate. + bool Hash = Tok.is(AsmToken::Hash); + if (Hash || Tok.is(AsmToken::Integer)) { + if (Hash) + Parser.Lex(); // Eat hash token. + const MCExpr *ImmVal; + if (getParser().parseExpression(ImmVal)) + return MatchOperand_ParseFail; + + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal); + if (!MCE) { + TokError("immediate value expected for prefetch operand"); + return MatchOperand_ParseFail; + } + unsigned prfop = MCE->getValue(); + if (prfop > 31) { + TokError("prefetch operand out of range, [0,31] expected"); + return MatchOperand_ParseFail; + } + + bool Valid; + auto Mapper = AArch64PRFM::PRFMMapper(); + StringRef Name = + Mapper.toString(MCE->getValue(), getSTI().getFeatureBits(), Valid); + Operands.push_back(AArch64Operand::CreatePrefetch(prfop, Name, + S, getContext())); + return MatchOperand_Success; + } + + if (Tok.isNot(AsmToken::Identifier)) { + TokError("pre-fetch hint expected"); + return MatchOperand_ParseFail; + } + + bool Valid; + auto Mapper = AArch64PRFM::PRFMMapper(); + unsigned prfop = + Mapper.fromString(Tok.getString(), getSTI().getFeatureBits(), Valid); + if (!Valid) { + TokError("pre-fetch hint expected"); + return MatchOperand_ParseFail; + } + + Parser.Lex(); // Eat identifier token. + Operands.push_back(AArch64Operand::CreatePrefetch(prfop, Tok.getString(), + S, getContext())); + return MatchOperand_Success; +} + +/// tryParsePSBHint - Try to parse a PSB operand, mapped to Hint command +AArch64AsmParser::OperandMatchResultTy +AArch64AsmParser::tryParsePSBHint(OperandVector &Operands) { + MCAsmParser &Parser = getParser(); + SMLoc S = getLoc(); + const AsmToken &Tok = Parser.getTok(); + if (Tok.isNot(AsmToken::Identifier)) { + TokError("invalid operand for instruction"); + return MatchOperand_ParseFail; + } + + bool Valid; + auto Mapper = AArch64PSBHint::PSBHintMapper(); + unsigned psbhint = + Mapper.fromString(Tok.getString(), getSTI().getFeatureBits(), Valid); + if (!Valid) { + TokError("invalid operand for instruction"); + return MatchOperand_ParseFail; + } + + Parser.Lex(); // Eat identifier token. + Operands.push_back(AArch64Operand::CreatePSBHint(psbhint, Tok.getString(), + S, getContext())); + return MatchOperand_Success; +} + +/// tryParseAdrpLabel - Parse and validate a source label for the ADRP +/// instruction. +AArch64AsmParser::OperandMatchResultTy +AArch64AsmParser::tryParseAdrpLabel(OperandVector &Operands) { + MCAsmParser &Parser = getParser(); + SMLoc S = getLoc(); + const MCExpr *Expr; + + if (Parser.getTok().is(AsmToken::Hash)) { + Parser.Lex(); // Eat hash token. + } + + if (parseSymbolicImmVal(Expr)) + return MatchOperand_ParseFail; + + AArch64MCExpr::VariantKind ELFRefKind; + MCSymbolRefExpr::VariantKind DarwinRefKind; + int64_t Addend; + if (classifySymbolRef(Expr, ELFRefKind, DarwinRefKind, Addend)) { + if (DarwinRefKind == MCSymbolRefExpr::VK_None && + ELFRefKind == AArch64MCExpr::VK_INVALID) { + // No modifier was specified at all; this is the syntax for an ELF basic + // ADRP relocation (unfortunately). + Expr = + AArch64MCExpr::create(Expr, AArch64MCExpr::VK_ABS_PAGE, getContext()); + } else if ((DarwinRefKind == MCSymbolRefExpr::VK_GOTPAGE || + DarwinRefKind == MCSymbolRefExpr::VK_TLVPPAGE) && + Addend != 0) { + Error(S, "gotpage label reference not allowed an addend"); + return MatchOperand_ParseFail; + } else if (DarwinRefKind != MCSymbolRefExpr::VK_PAGE && + DarwinRefKind != MCSymbolRefExpr::VK_GOTPAGE && + DarwinRefKind != MCSymbolRefExpr::VK_TLVPPAGE && + ELFRefKind != AArch64MCExpr::VK_GOT_PAGE && + ELFRefKind != AArch64MCExpr::VK_GOTTPREL_PAGE && + ELFRefKind != AArch64MCExpr::VK_TLSDESC_PAGE) { + // The operand must be an @page or @gotpage qualified symbolref. + Error(S, "page or gotpage label reference expected"); + return MatchOperand_ParseFail; + } + } + + // We have either a label reference possibly with addend or an immediate. The + // addend is a raw value here. The linker will adjust it to only reference the + // page. + SMLoc E = SMLoc::getFromPointer(getLoc().getPointer() - 1); + Operands.push_back(AArch64Operand::CreateImm(Expr, S, E, getContext())); + + return MatchOperand_Success; +} + +/// tryParseAdrLabel - Parse and validate a source label for the ADR +/// instruction. +AArch64AsmParser::OperandMatchResultTy +AArch64AsmParser::tryParseAdrLabel(OperandVector &Operands) { + MCAsmParser &Parser = getParser(); + SMLoc S = getLoc(); + const MCExpr *Expr; + + if (Parser.getTok().is(AsmToken::Hash)) { + Parser.Lex(); // Eat hash token. + } + + if (getParser().parseExpression(Expr)) + return MatchOperand_ParseFail; + + SMLoc E = SMLoc::getFromPointer(getLoc().getPointer() - 1); + Operands.push_back(AArch64Operand::CreateImm(Expr, S, E, getContext())); + + return MatchOperand_Success; +} + +/// tryParseFPImm - A floating point immediate expression operand. +AArch64AsmParser::OperandMatchResultTy +AArch64AsmParser::tryParseFPImm(OperandVector &Operands) { + MCAsmParser &Parser = getParser(); + SMLoc S = getLoc(); + + bool Hash = false; + if (Parser.getTok().is(AsmToken::Hash)) { + Parser.Lex(); // Eat '#' + Hash = true; + } + + // 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(); + if (Tok.is(AsmToken::Real)) { + APFloat RealVal(APFloat::IEEEdouble, Tok.getString()); + if (isNegative) + RealVal.changeSign(); + + uint64_t IntVal = RealVal.bitcastToAPInt().getZExtValue(); + int Val = AArch64_AM::getFP64Imm(APInt(64, IntVal)); + Parser.Lex(); // Eat the token. + // Check for out of range values. As an exception, we let Zero through, + // as we handle that special case in post-processing before matching in + // order to use the zero register for it. + if (Val == -1 && !RealVal.isPosZero()) { + TokError("expected compatible register or floating-point constant"); + return MatchOperand_ParseFail; + } + Operands.push_back(AArch64Operand::CreateFPImm(Val, S, getContext())); + return MatchOperand_Success; + } + if (Tok.is(AsmToken::Integer)) { + int64_t Val; + if (!isNegative && Tok.getString().startswith("0x")) { + Val = Tok.getIntVal(); + if (Val > 255 || Val < 0) { + TokError("encoded floating point value out of range"); + return MatchOperand_ParseFail; + } + } else { + APFloat RealVal(APFloat::IEEEdouble, Tok.getString()); + uint64_t IntVal = RealVal.bitcastToAPInt().getZExtValue(); + // If we had a '-' in front, toggle the sign bit. + IntVal ^= (uint64_t)isNegative << 63; + Val = AArch64_AM::getFP64Imm(APInt(64, IntVal)); + } + Parser.Lex(); // Eat the token. + Operands.push_back(AArch64Operand::CreateFPImm(Val, S, getContext())); + return MatchOperand_Success; + } + + if (!Hash) + return MatchOperand_NoMatch; + + TokError("invalid floating point immediate"); + return MatchOperand_ParseFail; +} + +/// tryParseAddSubImm - Parse ADD/SUB shifted immediate operand +AArch64AsmParser::OperandMatchResultTy +AArch64AsmParser::tryParseAddSubImm(OperandVector &Operands) { + MCAsmParser &Parser = getParser(); + SMLoc S = getLoc(); + + if (Parser.getTok().is(AsmToken::Hash)) + Parser.Lex(); // Eat '#' + else if (Parser.getTok().isNot(AsmToken::Integer)) + // Operand should start from # or should be integer, emit error otherwise. + return MatchOperand_NoMatch; + + const MCExpr *Imm; + if (parseSymbolicImmVal(Imm)) + return MatchOperand_ParseFail; + else if (Parser.getTok().isNot(AsmToken::Comma)) { + uint64_t ShiftAmount = 0; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(Imm); + if (MCE) { + int64_t Val = MCE->getValue(); + if (Val > 0xfff && (Val & 0xfff) == 0) { + Imm = MCConstantExpr::create(Val >> 12, getContext()); + ShiftAmount = 12; + } + } + SMLoc E = Parser.getTok().getLoc(); + Operands.push_back(AArch64Operand::CreateShiftedImm(Imm, ShiftAmount, S, E, + getContext())); + return MatchOperand_Success; + } + + // Eat ',' + Parser.Lex(); + + // The optional operand must be "lsl #N" where N is non-negative. + if (!Parser.getTok().is(AsmToken::Identifier) || + !Parser.getTok().getIdentifier().equals_lower("lsl")) { + Error(Parser.getTok().getLoc(), "only 'lsl #+N' valid after immediate"); + return MatchOperand_ParseFail; + } + + // Eat 'lsl' + Parser.Lex(); + + if (Parser.getTok().is(AsmToken::Hash)) { + Parser.Lex(); + } + + if (Parser.getTok().isNot(AsmToken::Integer)) { + Error(Parser.getTok().getLoc(), "only 'lsl #+N' valid after immediate"); + return MatchOperand_ParseFail; + } + + int64_t ShiftAmount = Parser.getTok().getIntVal(); + + if (ShiftAmount < 0) { + Error(Parser.getTok().getLoc(), "positive shift amount required"); + return MatchOperand_ParseFail; + } + Parser.Lex(); // Eat the number + + SMLoc E = Parser.getTok().getLoc(); + Operands.push_back(AArch64Operand::CreateShiftedImm(Imm, ShiftAmount, + S, E, getContext())); + return MatchOperand_Success; +} + +/// parseCondCodeString - Parse a Condition Code string. +AArch64CC::CondCode AArch64AsmParser::parseCondCodeString(StringRef Cond) { + AArch64CC::CondCode CC = StringSwitch<AArch64CC::CondCode>(Cond.lower()) + .Case("eq", AArch64CC::EQ) + .Case("ne", AArch64CC::NE) + .Case("cs", AArch64CC::HS) + .Case("hs", AArch64CC::HS) + .Case("cc", AArch64CC::LO) + .Case("lo", AArch64CC::LO) + .Case("mi", AArch64CC::MI) + .Case("pl", AArch64CC::PL) + .Case("vs", AArch64CC::VS) + .Case("vc", AArch64CC::VC) + .Case("hi", AArch64CC::HI) + .Case("ls", AArch64CC::LS) + .Case("ge", AArch64CC::GE) + .Case("lt", AArch64CC::LT) + .Case("gt", AArch64CC::GT) + .Case("le", AArch64CC::LE) + .Case("al", AArch64CC::AL) + .Case("nv", AArch64CC::NV) + .Default(AArch64CC::Invalid); + return CC; +} + +/// parseCondCode - Parse a Condition Code operand. +bool AArch64AsmParser::parseCondCode(OperandVector &Operands, + bool invertCondCode) { + MCAsmParser &Parser = getParser(); + SMLoc S = getLoc(); + const AsmToken &Tok = Parser.getTok(); + assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier"); + + StringRef Cond = Tok.getString(); + AArch64CC::CondCode CC = parseCondCodeString(Cond); + if (CC == AArch64CC::Invalid) + return TokError("invalid condition code"); + Parser.Lex(); // Eat identifier token. + + if (invertCondCode) { + if (CC == AArch64CC::AL || CC == AArch64CC::NV) + return TokError("condition codes AL and NV are invalid for this instruction"); + CC = AArch64CC::getInvertedCondCode(AArch64CC::CondCode(CC)); + } + + Operands.push_back( + AArch64Operand::CreateCondCode(CC, S, getLoc(), getContext())); + return false; +} + +/// tryParseOptionalShift - Some operands take an optional shift argument. Parse +/// them if present. +AArch64AsmParser::OperandMatchResultTy +AArch64AsmParser::tryParseOptionalShiftExtend(OperandVector &Operands) { + MCAsmParser &Parser = getParser(); + const AsmToken &Tok = Parser.getTok(); + std::string LowerID = Tok.getString().lower(); + AArch64_AM::ShiftExtendType ShOp = + StringSwitch<AArch64_AM::ShiftExtendType>(LowerID) + .Case("lsl", AArch64_AM::LSL) + .Case("lsr", AArch64_AM::LSR) + .Case("asr", AArch64_AM::ASR) + .Case("ror", AArch64_AM::ROR) + .Case("msl", AArch64_AM::MSL) + .Case("uxtb", AArch64_AM::UXTB) + .Case("uxth", AArch64_AM::UXTH) + .Case("uxtw", AArch64_AM::UXTW) + .Case("uxtx", AArch64_AM::UXTX) + .Case("sxtb", AArch64_AM::SXTB) + .Case("sxth", AArch64_AM::SXTH) + .Case("sxtw", AArch64_AM::SXTW) + .Case("sxtx", AArch64_AM::SXTX) + .Default(AArch64_AM::InvalidShiftExtend); + + if (ShOp == AArch64_AM::InvalidShiftExtend) + return MatchOperand_NoMatch; + + SMLoc S = Tok.getLoc(); + Parser.Lex(); + + bool Hash = getLexer().is(AsmToken::Hash); + if (!Hash && getLexer().isNot(AsmToken::Integer)) { + if (ShOp == AArch64_AM::LSL || ShOp == AArch64_AM::LSR || + ShOp == AArch64_AM::ASR || ShOp == AArch64_AM::ROR || + ShOp == AArch64_AM::MSL) { + // We expect a number here. + TokError("expected #imm after shift specifier"); + return MatchOperand_ParseFail; + } + + // "extend" type operatoins don't need an immediate, #0 is implicit. + SMLoc E = SMLoc::getFromPointer(getLoc().getPointer() - 1); + Operands.push_back( + AArch64Operand::CreateShiftExtend(ShOp, 0, false, S, E, getContext())); + return MatchOperand_Success; + } + + if (Hash) + Parser.Lex(); // Eat the '#'. + + // Make sure we do actually have a number or a parenthesized expression. + SMLoc E = Parser.getTok().getLoc(); + if (!Parser.getTok().is(AsmToken::Integer) && + !Parser.getTok().is(AsmToken::LParen)) { + Error(E, "expected integer shift amount"); + return MatchOperand_ParseFail; + } + + const MCExpr *ImmVal; + if (getParser().parseExpression(ImmVal)) + return MatchOperand_ParseFail; + + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal); + if (!MCE) { + Error(E, "expected constant '#imm' after shift specifier"); + return MatchOperand_ParseFail; + } + + E = SMLoc::getFromPointer(getLoc().getPointer() - 1); + Operands.push_back(AArch64Operand::CreateShiftExtend( + ShOp, MCE->getValue(), true, S, E, getContext())); + return MatchOperand_Success; +} + +/// parseSysAlias - The IC, DC, AT, and TLBI instructions are simple aliases for +/// the SYS instruction. Parse them specially so that we create a SYS MCInst. +bool AArch64AsmParser::parseSysAlias(StringRef Name, SMLoc NameLoc, + OperandVector &Operands) { + if (Name.find('.') != StringRef::npos) + return TokError("invalid operand"); + + Mnemonic = Name; + Operands.push_back( + AArch64Operand::CreateToken("sys", false, NameLoc, getContext())); + + MCAsmParser &Parser = getParser(); + const AsmToken &Tok = Parser.getTok(); + StringRef Op = Tok.getString(); + SMLoc S = Tok.getLoc(); + + const MCExpr *Expr = nullptr; + +#define SYS_ALIAS(op1, Cn, Cm, op2) \ + do { \ + Expr = MCConstantExpr::create(op1, getContext()); \ + Operands.push_back( \ + AArch64Operand::CreateImm(Expr, S, getLoc(), getContext())); \ + Operands.push_back( \ + AArch64Operand::CreateSysCR(Cn, S, getLoc(), getContext())); \ + Operands.push_back( \ + AArch64Operand::CreateSysCR(Cm, S, getLoc(), getContext())); \ + Expr = MCConstantExpr::create(op2, getContext()); \ + Operands.push_back( \ + AArch64Operand::CreateImm(Expr, S, getLoc(), getContext())); \ + } while (0) + + if (Mnemonic == "ic") { + if (!Op.compare_lower("ialluis")) { + // SYS #0, C7, C1, #0 + SYS_ALIAS(0, 7, 1, 0); + } else if (!Op.compare_lower("iallu")) { + // SYS #0, C7, C5, #0 + SYS_ALIAS(0, 7, 5, 0); + } else if (!Op.compare_lower("ivau")) { + // SYS #3, C7, C5, #1 + SYS_ALIAS(3, 7, 5, 1); + } else { + return TokError("invalid operand for IC instruction"); + } + } else if (Mnemonic == "dc") { + if (!Op.compare_lower("zva")) { + // SYS #3, C7, C4, #1 + SYS_ALIAS(3, 7, 4, 1); + } else if (!Op.compare_lower("ivac")) { + // SYS #3, C7, C6, #1 + SYS_ALIAS(0, 7, 6, 1); + } else if (!Op.compare_lower("isw")) { + // SYS #0, C7, C6, #2 + SYS_ALIAS(0, 7, 6, 2); + } else if (!Op.compare_lower("cvac")) { + // SYS #3, C7, C10, #1 + SYS_ALIAS(3, 7, 10, 1); + } else if (!Op.compare_lower("csw")) { + // SYS #0, C7, C10, #2 + SYS_ALIAS(0, 7, 10, 2); + } else if (!Op.compare_lower("cvau")) { + // SYS #3, C7, C11, #1 + SYS_ALIAS(3, 7, 11, 1); + } else if (!Op.compare_lower("civac")) { + // SYS #3, C7, C14, #1 + SYS_ALIAS(3, 7, 14, 1); + } else if (!Op.compare_lower("cisw")) { + // SYS #0, C7, C14, #2 + SYS_ALIAS(0, 7, 14, 2); + } else if (!Op.compare_lower("cvap")) { + if (getSTI().getFeatureBits()[AArch64::HasV8_2aOps]) { + // SYS #3, C7, C12, #1 + SYS_ALIAS(3, 7, 12, 1); + } else { + return TokError("DC CVAP requires ARMv8.2a"); + } + } else { + return TokError("invalid operand for DC instruction"); + } + } else if (Mnemonic == "at") { + if (!Op.compare_lower("s1e1r")) { + // SYS #0, C7, C8, #0 + SYS_ALIAS(0, 7, 8, 0); + } else if (!Op.compare_lower("s1e2r")) { + // SYS #4, C7, C8, #0 + SYS_ALIAS(4, 7, 8, 0); + } else if (!Op.compare_lower("s1e3r")) { + // SYS #6, C7, C8, #0 + SYS_ALIAS(6, 7, 8, 0); + } else if (!Op.compare_lower("s1e1w")) { + // SYS #0, C7, C8, #1 + SYS_ALIAS(0, 7, 8, 1); + } else if (!Op.compare_lower("s1e2w")) { + // SYS #4, C7, C8, #1 + SYS_ALIAS(4, 7, 8, 1); + } else if (!Op.compare_lower("s1e3w")) { + // SYS #6, C7, C8, #1 + SYS_ALIAS(6, 7, 8, 1); + } else if (!Op.compare_lower("s1e0r")) { + // SYS #0, C7, C8, #3 + SYS_ALIAS(0, 7, 8, 2); + } else if (!Op.compare_lower("s1e0w")) { + // SYS #0, C7, C8, #3 + SYS_ALIAS(0, 7, 8, 3); + } else if (!Op.compare_lower("s12e1r")) { + // SYS #4, C7, C8, #4 + SYS_ALIAS(4, 7, 8, 4); + } else if (!Op.compare_lower("s12e1w")) { + // SYS #4, C7, C8, #5 + SYS_ALIAS(4, 7, 8, 5); + } else if (!Op.compare_lower("s12e0r")) { + // SYS #4, C7, C8, #6 + SYS_ALIAS(4, 7, 8, 6); + } else if (!Op.compare_lower("s12e0w")) { + // SYS #4, C7, C8, #7 + SYS_ALIAS(4, 7, 8, 7); + } else if (!Op.compare_lower("s1e1rp")) { + if (getSTI().getFeatureBits()[AArch64::HasV8_2aOps]) { + // SYS #0, C7, C9, #0 + SYS_ALIAS(0, 7, 9, 0); + } else { + return TokError("AT S1E1RP requires ARMv8.2a"); + } + } else if (!Op.compare_lower("s1e1wp")) { + if (getSTI().getFeatureBits()[AArch64::HasV8_2aOps]) { + // SYS #0, C7, C9, #1 + SYS_ALIAS(0, 7, 9, 1); + } else { + return TokError("AT S1E1WP requires ARMv8.2a"); + } + } else { + return TokError("invalid operand for AT instruction"); + } + } else if (Mnemonic == "tlbi") { + if (!Op.compare_lower("vmalle1is")) { + // SYS #0, C8, C3, #0 + SYS_ALIAS(0, 8, 3, 0); + } else if (!Op.compare_lower("alle2is")) { + // SYS #4, C8, C3, #0 + SYS_ALIAS(4, 8, 3, 0); + } else if (!Op.compare_lower("alle3is")) { + // SYS #6, C8, C3, #0 + SYS_ALIAS(6, 8, 3, 0); + } else if (!Op.compare_lower("vae1is")) { + // SYS #0, C8, C3, #1 + SYS_ALIAS(0, 8, 3, 1); + } else if (!Op.compare_lower("vae2is")) { + // SYS #4, C8, C3, #1 + SYS_ALIAS(4, 8, 3, 1); + } else if (!Op.compare_lower("vae3is")) { + // SYS #6, C8, C3, #1 + SYS_ALIAS(6, 8, 3, 1); + } else if (!Op.compare_lower("aside1is")) { + // SYS #0, C8, C3, #2 + SYS_ALIAS(0, 8, 3, 2); + } else if (!Op.compare_lower("vaae1is")) { + // SYS #0, C8, C3, #3 + SYS_ALIAS(0, 8, 3, 3); + } else if (!Op.compare_lower("alle1is")) { + // SYS #4, C8, C3, #4 + SYS_ALIAS(4, 8, 3, 4); + } else if (!Op.compare_lower("vale1is")) { + // SYS #0, C8, C3, #5 + SYS_ALIAS(0, 8, 3, 5); + } else if (!Op.compare_lower("vaale1is")) { + // SYS #0, C8, C3, #7 + SYS_ALIAS(0, 8, 3, 7); + } else if (!Op.compare_lower("vmalle1")) { + // SYS #0, C8, C7, #0 + SYS_ALIAS(0, 8, 7, 0); + } else if (!Op.compare_lower("alle2")) { + // SYS #4, C8, C7, #0 + SYS_ALIAS(4, 8, 7, 0); + } else if (!Op.compare_lower("vale2is")) { + // SYS #4, C8, C3, #5 + SYS_ALIAS(4, 8, 3, 5); + } else if (!Op.compare_lower("vale3is")) { + // SYS #6, C8, C3, #5 + SYS_ALIAS(6, 8, 3, 5); + } else if (!Op.compare_lower("alle3")) { + // SYS #6, C8, C7, #0 + SYS_ALIAS(6, 8, 7, 0); + } else if (!Op.compare_lower("vae1")) { + // SYS #0, C8, C7, #1 + SYS_ALIAS(0, 8, 7, 1); + } else if (!Op.compare_lower("vae2")) { + // SYS #4, C8, C7, #1 + SYS_ALIAS(4, 8, 7, 1); + } else if (!Op.compare_lower("vae3")) { + // SYS #6, C8, C7, #1 + SYS_ALIAS(6, 8, 7, 1); + } else if (!Op.compare_lower("aside1")) { + // SYS #0, C8, C7, #2 + SYS_ALIAS(0, 8, 7, 2); + } else if (!Op.compare_lower("vaae1")) { + // SYS #0, C8, C7, #3 + SYS_ALIAS(0, 8, 7, 3); + } else if (!Op.compare_lower("alle1")) { + // SYS #4, C8, C7, #4 + SYS_ALIAS(4, 8, 7, 4); + } else if (!Op.compare_lower("vale1")) { + // SYS #0, C8, C7, #5 + SYS_ALIAS(0, 8, 7, 5); + } else if (!Op.compare_lower("vale2")) { + // SYS #4, C8, C7, #5 + SYS_ALIAS(4, 8, 7, 5); + } else if (!Op.compare_lower("vale3")) { + // SYS #6, C8, C7, #5 + SYS_ALIAS(6, 8, 7, 5); + } else if (!Op.compare_lower("vaale1")) { + // SYS #0, C8, C7, #7 + SYS_ALIAS(0, 8, 7, 7); + } else if (!Op.compare_lower("ipas2e1")) { + // SYS #4, C8, C4, #1 + SYS_ALIAS(4, 8, 4, 1); + } else if (!Op.compare_lower("ipas2le1")) { + // SYS #4, C8, C4, #5 + SYS_ALIAS(4, 8, 4, 5); + } else if (!Op.compare_lower("ipas2e1is")) { + // SYS #4, C8, C4, #1 + SYS_ALIAS(4, 8, 0, 1); + } else if (!Op.compare_lower("ipas2le1is")) { + // SYS #4, C8, C4, #5 + SYS_ALIAS(4, 8, 0, 5); + } else if (!Op.compare_lower("vmalls12e1")) { + // SYS #4, C8, C7, #6 + SYS_ALIAS(4, 8, 7, 6); + } else if (!Op.compare_lower("vmalls12e1is")) { + // SYS #4, C8, C3, #6 + SYS_ALIAS(4, 8, 3, 6); + } else { + return TokError("invalid operand for TLBI instruction"); + } + } + +#undef SYS_ALIAS + + Parser.Lex(); // Eat operand. + + bool ExpectRegister = (Op.lower().find("all") == StringRef::npos); + bool HasRegister = false; + + // Check for the optional register operand. + if (getLexer().is(AsmToken::Comma)) { + Parser.Lex(); // Eat comma. + + if (Tok.isNot(AsmToken::Identifier) || parseRegister(Operands)) + return TokError("expected register operand"); + + HasRegister = true; + } + + if (getLexer().isNot(AsmToken::EndOfStatement)) { + Parser.eatToEndOfStatement(); + return TokError("unexpected token in argument list"); + } + + if (ExpectRegister && !HasRegister) { + return TokError("specified " + Mnemonic + " op requires a register"); + } + else if (!ExpectRegister && HasRegister) { + return TokError("specified " + Mnemonic + " op does not use a register"); + } + + Parser.Lex(); // Consume the EndOfStatement + return false; +} + +AArch64AsmParser::OperandMatchResultTy +AArch64AsmParser::tryParseBarrierOperand(OperandVector &Operands) { + MCAsmParser &Parser = getParser(); + const AsmToken &Tok = Parser.getTok(); + + // Can be either a #imm style literal or an option name + bool Hash = Tok.is(AsmToken::Hash); + if (Hash || Tok.is(AsmToken::Integer)) { + // Immediate operand. + if (Hash) + Parser.Lex(); // Eat the '#' + const MCExpr *ImmVal; + SMLoc ExprLoc = getLoc(); + if (getParser().parseExpression(ImmVal)) + return MatchOperand_ParseFail; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal); + if (!MCE) { + Error(ExprLoc, "immediate value expected for barrier operand"); + return MatchOperand_ParseFail; + } + if (MCE->getValue() < 0 || MCE->getValue() > 15) { + Error(ExprLoc, "barrier operand out of range"); + return MatchOperand_ParseFail; + } + bool Valid; + auto Mapper = AArch64DB::DBarrierMapper(); + StringRef Name = + Mapper.toString(MCE->getValue(), getSTI().getFeatureBits(), Valid); + Operands.push_back( AArch64Operand::CreateBarrier(MCE->getValue(), Name, + ExprLoc, getContext())); + return MatchOperand_Success; + } + + if (Tok.isNot(AsmToken::Identifier)) { + TokError("invalid operand for instruction"); + return MatchOperand_ParseFail; + } + + bool Valid; + auto Mapper = AArch64DB::DBarrierMapper(); + unsigned Opt = + Mapper.fromString(Tok.getString(), getSTI().getFeatureBits(), Valid); + if (!Valid) { + TokError("invalid barrier option name"); + return MatchOperand_ParseFail; + } + + // The only valid named option for ISB is 'sy' + if (Mnemonic == "isb" && Opt != AArch64DB::SY) { + TokError("'sy' or #imm operand expected"); + return MatchOperand_ParseFail; + } + + Operands.push_back( AArch64Operand::CreateBarrier(Opt, Tok.getString(), + getLoc(), getContext())); + Parser.Lex(); // Consume the option + + return MatchOperand_Success; +} + +AArch64AsmParser::OperandMatchResultTy +AArch64AsmParser::tryParseSysReg(OperandVector &Operands) { + MCAsmParser &Parser = getParser(); + const AsmToken &Tok = Parser.getTok(); + + if (Tok.isNot(AsmToken::Identifier)) + return MatchOperand_NoMatch; + + bool IsKnown; + auto MRSMapper = AArch64SysReg::MRSMapper(); + uint32_t MRSReg = MRSMapper.fromString(Tok.getString(), + getSTI().getFeatureBits(), IsKnown); + assert(IsKnown == (MRSReg != -1U) && + "register should be -1 if and only if it's unknown"); + + auto MSRMapper = AArch64SysReg::MSRMapper(); + uint32_t MSRReg = MSRMapper.fromString(Tok.getString(), + getSTI().getFeatureBits(), IsKnown); + assert(IsKnown == (MSRReg != -1U) && + "register should be -1 if and only if it's unknown"); + + auto PStateMapper = AArch64PState::PStateMapper(); + uint32_t PStateField = + PStateMapper.fromString(Tok.getString(), + getSTI().getFeatureBits(), IsKnown); + assert(IsKnown == (PStateField != -1U) && + "register should be -1 if and only if it's unknown"); + + Operands.push_back(AArch64Operand::CreateSysReg( + Tok.getString(), getLoc(), MRSReg, MSRReg, PStateField, getContext())); + Parser.Lex(); // Eat identifier + + return MatchOperand_Success; +} + +/// tryParseVectorRegister - Parse a vector register operand. +bool AArch64AsmParser::tryParseVectorRegister(OperandVector &Operands) { + MCAsmParser &Parser = getParser(); + if (Parser.getTok().isNot(AsmToken::Identifier)) + return true; + + SMLoc S = getLoc(); + // Check for a vector register specifier first. + StringRef Kind; + int64_t Reg = tryMatchVectorRegister(Kind, false); + if (Reg == -1) + return true; + Operands.push_back( + AArch64Operand::CreateReg(Reg, true, S, getLoc(), getContext())); + // If there was an explicit qualifier, that goes on as a literal text + // operand. + if (!Kind.empty()) + Operands.push_back( + AArch64Operand::CreateToken(Kind, false, S, getContext())); + + // If there is an index specifier following the register, parse that too. + if (Parser.getTok().is(AsmToken::LBrac)) { + SMLoc SIdx = getLoc(); + Parser.Lex(); // Eat left bracket token. + + const MCExpr *ImmVal; + if (getParser().parseExpression(ImmVal)) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal); + if (!MCE) { + TokError("immediate value expected for vector index"); + return false; + } + + SMLoc E = getLoc(); + if (Parser.getTok().isNot(AsmToken::RBrac)) { + Error(E, "']' expected"); + return false; + } + + Parser.Lex(); // Eat right bracket token. + + Operands.push_back(AArch64Operand::CreateVectorIndex(MCE->getValue(), SIdx, + E, getContext())); + } + + return false; +} + +/// parseRegister - Parse a non-vector register operand. +bool AArch64AsmParser::parseRegister(OperandVector &Operands) { + MCAsmParser &Parser = getParser(); + SMLoc S = getLoc(); + // Try for a vector register. + if (!tryParseVectorRegister(Operands)) + return false; + + // Try for a scalar register. + int64_t Reg = tryParseRegister(); + if (Reg == -1) + return true; + Operands.push_back( + AArch64Operand::CreateReg(Reg, false, S, getLoc(), getContext())); + + // A small number of instructions (FMOVXDhighr, for example) have "[1]" + // as a string token in the instruction itself. + if (getLexer().getKind() == AsmToken::LBrac) { + SMLoc LBracS = getLoc(); + Parser.Lex(); + const AsmToken &Tok = Parser.getTok(); + if (Tok.is(AsmToken::Integer)) { + SMLoc IntS = getLoc(); + int64_t Val = Tok.getIntVal(); + if (Val == 1) { + Parser.Lex(); + if (getLexer().getKind() == AsmToken::RBrac) { + SMLoc RBracS = getLoc(); + Parser.Lex(); + Operands.push_back( + AArch64Operand::CreateToken("[", false, LBracS, getContext())); + Operands.push_back( + AArch64Operand::CreateToken("1", false, IntS, getContext())); + Operands.push_back( + AArch64Operand::CreateToken("]", false, RBracS, getContext())); + return false; + } + } + } + } + + return false; +} + +bool AArch64AsmParser::parseSymbolicImmVal(const MCExpr *&ImmVal) { + MCAsmParser &Parser = getParser(); + bool HasELFModifier = false; + AArch64MCExpr::VariantKind RefKind; + + if (Parser.getTok().is(AsmToken::Colon)) { + Parser.Lex(); // Eat ':" + HasELFModifier = true; + + if (Parser.getTok().isNot(AsmToken::Identifier)) { + Error(Parser.getTok().getLoc(), + "expect relocation specifier in operand after ':'"); + return true; + } + + std::string LowerCase = Parser.getTok().getIdentifier().lower(); + RefKind = StringSwitch<AArch64MCExpr::VariantKind>(LowerCase) + .Case("lo12", AArch64MCExpr::VK_LO12) + .Case("abs_g3", AArch64MCExpr::VK_ABS_G3) + .Case("abs_g2", AArch64MCExpr::VK_ABS_G2) + .Case("abs_g2_s", AArch64MCExpr::VK_ABS_G2_S) + .Case("abs_g2_nc", AArch64MCExpr::VK_ABS_G2_NC) + .Case("abs_g1", AArch64MCExpr::VK_ABS_G1) + .Case("abs_g1_s", AArch64MCExpr::VK_ABS_G1_S) + .Case("abs_g1_nc", AArch64MCExpr::VK_ABS_G1_NC) + .Case("abs_g0", AArch64MCExpr::VK_ABS_G0) + .Case("abs_g0_s", AArch64MCExpr::VK_ABS_G0_S) + .Case("abs_g0_nc", AArch64MCExpr::VK_ABS_G0_NC) + .Case("dtprel_g2", AArch64MCExpr::VK_DTPREL_G2) + .Case("dtprel_g1", AArch64MCExpr::VK_DTPREL_G1) + .Case("dtprel_g1_nc", AArch64MCExpr::VK_DTPREL_G1_NC) + .Case("dtprel_g0", AArch64MCExpr::VK_DTPREL_G0) + .Case("dtprel_g0_nc", AArch64MCExpr::VK_DTPREL_G0_NC) + .Case("dtprel_hi12", AArch64MCExpr::VK_DTPREL_HI12) + .Case("dtprel_lo12", AArch64MCExpr::VK_DTPREL_LO12) + .Case("dtprel_lo12_nc", AArch64MCExpr::VK_DTPREL_LO12_NC) + .Case("tprel_g2", AArch64MCExpr::VK_TPREL_G2) + .Case("tprel_g1", AArch64MCExpr::VK_TPREL_G1) + .Case("tprel_g1_nc", AArch64MCExpr::VK_TPREL_G1_NC) + .Case("tprel_g0", AArch64MCExpr::VK_TPREL_G0) + .Case("tprel_g0_nc", AArch64MCExpr::VK_TPREL_G0_NC) + .Case("tprel_hi12", AArch64MCExpr::VK_TPREL_HI12) + .Case("tprel_lo12", AArch64MCExpr::VK_TPREL_LO12) + .Case("tprel_lo12_nc", AArch64MCExpr::VK_TPREL_LO12_NC) + .Case("tlsdesc_lo12", AArch64MCExpr::VK_TLSDESC_LO12) + .Case("got", AArch64MCExpr::VK_GOT_PAGE) + .Case("got_lo12", AArch64MCExpr::VK_GOT_LO12) + .Case("gottprel", AArch64MCExpr::VK_GOTTPREL_PAGE) + .Case("gottprel_lo12", AArch64MCExpr::VK_GOTTPREL_LO12_NC) + .Case("gottprel_g1", AArch64MCExpr::VK_GOTTPREL_G1) + .Case("gottprel_g0_nc", AArch64MCExpr::VK_GOTTPREL_G0_NC) + .Case("tlsdesc", AArch64MCExpr::VK_TLSDESC_PAGE) + .Default(AArch64MCExpr::VK_INVALID); + + if (RefKind == AArch64MCExpr::VK_INVALID) { + Error(Parser.getTok().getLoc(), + "expect relocation specifier in operand after ':'"); + return true; + } + + Parser.Lex(); // Eat identifier + + if (Parser.getTok().isNot(AsmToken::Colon)) { + Error(Parser.getTok().getLoc(), "expect ':' after relocation specifier"); + return true; + } + Parser.Lex(); // Eat ':' + } + + if (getParser().parseExpression(ImmVal)) + return true; + + if (HasELFModifier) + ImmVal = AArch64MCExpr::create(ImmVal, RefKind, getContext()); + + return false; +} + +/// parseVectorList - Parse a vector list operand for AdvSIMD instructions. +bool AArch64AsmParser::parseVectorList(OperandVector &Operands) { + MCAsmParser &Parser = getParser(); + assert(Parser.getTok().is(AsmToken::LCurly) && "Token is not a Left Bracket"); + SMLoc S = getLoc(); + Parser.Lex(); // Eat left bracket token. + StringRef Kind; + int64_t FirstReg = tryMatchVectorRegister(Kind, true); + if (FirstReg == -1) + return true; + int64_t PrevReg = FirstReg; + unsigned Count = 1; + + if (Parser.getTok().is(AsmToken::Minus)) { + Parser.Lex(); // Eat the minus. + + SMLoc Loc = getLoc(); + StringRef NextKind; + int64_t Reg = tryMatchVectorRegister(NextKind, true); + if (Reg == -1) + return true; + // Any Kind suffices must match on all regs in the list. + if (Kind != NextKind) + return Error(Loc, "mismatched register size suffix"); + + unsigned Space = (PrevReg < Reg) ? (Reg - PrevReg) : (Reg + 32 - PrevReg); + + if (Space == 0 || Space > 3) { + return Error(Loc, "invalid number of vectors"); + } + + Count += Space; + } + else { + while (Parser.getTok().is(AsmToken::Comma)) { + Parser.Lex(); // Eat the comma token. + + SMLoc Loc = getLoc(); + StringRef NextKind; + int64_t Reg = tryMatchVectorRegister(NextKind, true); + if (Reg == -1) + return true; + // Any Kind suffices must match on all regs in the list. + if (Kind != NextKind) + return Error(Loc, "mismatched register size suffix"); + + // Registers must be incremental (with wraparound at 31) + if (getContext().getRegisterInfo()->getEncodingValue(Reg) != + (getContext().getRegisterInfo()->getEncodingValue(PrevReg) + 1) % 32) + return Error(Loc, "registers must be sequential"); + + PrevReg = Reg; + ++Count; + } + } + + if (Parser.getTok().isNot(AsmToken::RCurly)) + return Error(getLoc(), "'}' expected"); + Parser.Lex(); // Eat the '}' token. + + if (Count > 4) + return Error(S, "invalid number of vectors"); + + unsigned NumElements = 0; + char ElementKind = 0; + if (!Kind.empty()) + parseValidVectorKind(Kind, NumElements, ElementKind); + + Operands.push_back(AArch64Operand::CreateVectorList( + FirstReg, Count, NumElements, ElementKind, S, getLoc(), getContext())); + + // If there is an index specifier following the list, parse that too. + if (Parser.getTok().is(AsmToken::LBrac)) { + SMLoc SIdx = getLoc(); + Parser.Lex(); // Eat left bracket token. + + const MCExpr *ImmVal; + if (getParser().parseExpression(ImmVal)) + return false; + const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal); + if (!MCE) { + TokError("immediate value expected for vector index"); + return false; + } + + SMLoc E = getLoc(); + if (Parser.getTok().isNot(AsmToken::RBrac)) { + Error(E, "']' expected"); + return false; + } + + Parser.Lex(); // Eat right bracket token. + + Operands.push_back(AArch64Operand::CreateVectorIndex(MCE->getValue(), SIdx, + E, getContext())); + } + return false; +} + +AArch64AsmParser::OperandMatchResultTy +AArch64AsmParser::tryParseGPR64sp0Operand(OperandVector &Operands) { + MCAsmParser &Parser = getParser(); + const AsmToken &Tok = Parser.getTok(); + if (!Tok.is(AsmToken::Identifier)) + return MatchOperand_NoMatch; + + unsigned RegNum = matchRegisterNameAlias(Tok.getString().lower(), false); + + MCContext &Ctx = getContext(); + const MCRegisterInfo *RI = Ctx.getRegisterInfo(); + if (!RI->getRegClass(AArch64::GPR64spRegClassID).contains(RegNum)) + return MatchOperand_NoMatch; + + SMLoc S = getLoc(); + Parser.Lex(); // Eat register + + if (Parser.getTok().isNot(AsmToken::Comma)) { + Operands.push_back( + AArch64Operand::CreateReg(RegNum, false, S, getLoc(), Ctx)); + return MatchOperand_Success; + } + Parser.Lex(); // Eat comma. + + if (Parser.getTok().is(AsmToken::Hash)) + Parser.Lex(); // Eat hash + + if (Parser.getTok().isNot(AsmToken::Integer)) { + Error(getLoc(), "index must be absent or #0"); + return MatchOperand_ParseFail; + } + + const MCExpr *ImmVal; + if (Parser.parseExpression(ImmVal) || !isa<MCConstantExpr>(ImmVal) || + cast<MCConstantExpr>(ImmVal)->getValue() != 0) { + Error(getLoc(), "index must be absent or #0"); + return MatchOperand_ParseFail; + } + + Operands.push_back( + AArch64Operand::CreateReg(RegNum, false, S, getLoc(), Ctx)); + return MatchOperand_Success; +} + +/// parseOperand - Parse a arm instruction operand. For now this parses the +/// operand regardless of the mnemonic. +bool AArch64AsmParser::parseOperand(OperandVector &Operands, bool isCondCode, + bool invertCondCode) { + MCAsmParser &Parser = getParser(); + // 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; + + // Nothing custom, so do general case parsing. + SMLoc S, E; + switch (getLexer().getKind()) { + default: { + SMLoc S = getLoc(); + const MCExpr *Expr; + if (parseSymbolicImmVal(Expr)) + return Error(S, "invalid operand"); + + SMLoc E = SMLoc::getFromPointer(getLoc().getPointer() - 1); + Operands.push_back(AArch64Operand::CreateImm(Expr, S, E, getContext())); + return false; + } + case AsmToken::LBrac: { + SMLoc Loc = Parser.getTok().getLoc(); + Operands.push_back(AArch64Operand::CreateToken("[", false, Loc, + getContext())); + Parser.Lex(); // Eat '[' + + // There's no comma after a '[', so we can parse the next operand + // immediately. + return parseOperand(Operands, false, false); + } + case AsmToken::LCurly: + return parseVectorList(Operands); + case AsmToken::Identifier: { + // If we're expecting a Condition Code operand, then just parse that. + if (isCondCode) + return parseCondCode(Operands, invertCondCode); + + // If it's a register name, parse it. + if (!parseRegister(Operands)) + return false; + + // This could be an optional "shift" or "extend" operand. + OperandMatchResultTy GotShift = tryParseOptionalShiftExtend(Operands); + // We can only continue if no tokens were eaten. + if (GotShift != MatchOperand_NoMatch) + return GotShift; + + // 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 = getLoc(); + if (getParser().parseExpression(IdVal)) + return true; + + E = SMLoc::getFromPointer(getLoc().getPointer() - 1); + Operands.push_back(AArch64Operand::CreateImm(IdVal, S, E, getContext())); + return false; + } + case AsmToken::Integer: + case AsmToken::Real: + case AsmToken::Hash: { + // #42 -> immediate. + S = getLoc(); + if (getLexer().is(AsmToken::Hash)) + Parser.Lex(); + + // Parse a negative sign + bool isNegative = false; + if (Parser.getTok().is(AsmToken::Minus)) { + isNegative = true; + // We need to consume this token only when we have a Real, otherwise + // we let parseSymbolicImmVal take care of it + if (Parser.getLexer().peekTok().is(AsmToken::Real)) + Parser.Lex(); + } + + // The only Real that should come through here is a literal #0.0 for + // the fcmp[e] r, #0.0 instructions. They expect raw token operands, + // so convert the value. + const AsmToken &Tok = Parser.getTok(); + if (Tok.is(AsmToken::Real)) { + APFloat RealVal(APFloat::IEEEdouble, Tok.getString()); + uint64_t IntVal = RealVal.bitcastToAPInt().getZExtValue(); + if (Mnemonic != "fcmp" && Mnemonic != "fcmpe" && Mnemonic != "fcmeq" && + Mnemonic != "fcmge" && Mnemonic != "fcmgt" && Mnemonic != "fcmle" && + Mnemonic != "fcmlt") + return TokError("unexpected floating point literal"); + else if (IntVal != 0 || isNegative) + return TokError("expected floating-point constant #0.0"); + Parser.Lex(); // Eat the token. + + Operands.push_back( + AArch64Operand::CreateToken("#0", false, S, getContext())); + Operands.push_back( + AArch64Operand::CreateToken(".0", false, S, getContext())); + return false; + } + + const MCExpr *ImmVal; + if (parseSymbolicImmVal(ImmVal)) + return true; + + E = SMLoc::getFromPointer(getLoc().getPointer() - 1); + Operands.push_back(AArch64Operand::CreateImm(ImmVal, S, E, getContext())); + return false; + } + case AsmToken::Equal: { + SMLoc Loc = Parser.getTok().getLoc(); + if (Mnemonic != "ldr") // only parse for ldr pseudo (e.g. ldr r0, =val) + return Error(Loc, "unexpected token in operand"); + Parser.Lex(); // Eat '=' + const MCExpr *SubExprVal; + if (getParser().parseExpression(SubExprVal)) + return true; + + if (Operands.size() < 2 || + !static_cast<AArch64Operand &>(*Operands[1]).isReg()) + return Error(Loc, "Only valid when first operand is register"); + + bool IsXReg = + AArch64MCRegisterClasses[AArch64::GPR64allRegClassID].contains( + Operands[1]->getReg()); + + MCContext& Ctx = getContext(); + E = SMLoc::getFromPointer(Loc.getPointer() - 1); + // If the op is an imm and can be fit into a mov, then replace ldr with mov. + if (isa<MCConstantExpr>(SubExprVal)) { + uint64_t Imm = (cast<MCConstantExpr>(SubExprVal))->getValue(); + uint32_t ShiftAmt = 0, MaxShiftAmt = IsXReg ? 48 : 16; + while(Imm > 0xFFFF && countTrailingZeros(Imm) >= 16) { + ShiftAmt += 16; + Imm >>= 16; + } + if (ShiftAmt <= MaxShiftAmt && Imm <= 0xFFFF) { + Operands[0] = AArch64Operand::CreateToken("movz", false, Loc, Ctx); + Operands.push_back(AArch64Operand::CreateImm( + MCConstantExpr::create(Imm, Ctx), S, E, Ctx)); + if (ShiftAmt) + Operands.push_back(AArch64Operand::CreateShiftExtend(AArch64_AM::LSL, + ShiftAmt, true, S, E, Ctx)); + return false; + } + APInt Simm = APInt(64, Imm << ShiftAmt); + // check if the immediate is an unsigned or signed 32-bit int for W regs + if (!IsXReg && !(Simm.isIntN(32) || Simm.isSignedIntN(32))) + return Error(Loc, "Immediate too large for register"); + } + // If it is a label or an imm that cannot fit in a movz, put it into CP. + const MCExpr *CPLoc = + getTargetStreamer().addConstantPoolEntry(SubExprVal, IsXReg ? 8 : 4, Loc); + Operands.push_back(AArch64Operand::CreateImm(CPLoc, S, E, Ctx)); + return false; + } + } +} + +/// ParseInstruction - Parse an AArch64 instruction mnemonic followed by its +/// operands. +bool AArch64AsmParser::ParseInstruction(ParseInstructionInfo &Info, + StringRef Name, SMLoc NameLoc, + OperandVector &Operands) { + MCAsmParser &Parser = getParser(); + Name = StringSwitch<StringRef>(Name.lower()) + .Case("beq", "b.eq") + .Case("bne", "b.ne") + .Case("bhs", "b.hs") + .Case("bcs", "b.cs") + .Case("blo", "b.lo") + .Case("bcc", "b.cc") + .Case("bmi", "b.mi") + .Case("bpl", "b.pl") + .Case("bvs", "b.vs") + .Case("bvc", "b.vc") + .Case("bhi", "b.hi") + .Case("bls", "b.ls") + .Case("bge", "b.ge") + .Case("blt", "b.lt") + .Case("bgt", "b.gt") + .Case("ble", "b.le") + .Case("bal", "b.al") + .Case("bnv", "b.nv") + .Default(Name); + + // First check for the AArch64-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 Head = Name.slice(Start, Next); + + // IC, DC, AT, and TLBI instructions are aliases for the SYS instruction. + if (Head == "ic" || Head == "dc" || Head == "at" || Head == "tlbi") { + bool IsError = parseSysAlias(Head, NameLoc, Operands); + if (IsError && getLexer().isNot(AsmToken::EndOfStatement)) + Parser.eatToEndOfStatement(); + return IsError; + } + + Operands.push_back( + AArch64Operand::CreateToken(Head, false, NameLoc, getContext())); + Mnemonic = Head; + + // Handle condition codes for a branch mnemonic + if (Head == "b" && Next != StringRef::npos) { + Start = Next; + Next = Name.find('.', Start + 1); + Head = Name.slice(Start + 1, Next); + + SMLoc SuffixLoc = SMLoc::getFromPointer(NameLoc.getPointer() + + (Head.data() - Name.data())); + AArch64CC::CondCode CC = parseCondCodeString(Head); + if (CC == AArch64CC::Invalid) + return Error(SuffixLoc, "invalid condition code"); + Operands.push_back( + AArch64Operand::CreateToken(".", true, SuffixLoc, getContext())); + Operands.push_back( + AArch64Operand::CreateCondCode(CC, NameLoc, NameLoc, getContext())); + } + + // Add the remaining tokens in the mnemonic. + while (Next != StringRef::npos) { + Start = Next; + Next = Name.find('.', Start + 1); + Head = Name.slice(Start, Next); + SMLoc SuffixLoc = SMLoc::getFromPointer(NameLoc.getPointer() + + (Head.data() - Name.data()) + 1); + Operands.push_back( + AArch64Operand::CreateToken(Head, true, SuffixLoc, getContext())); + } + + // Conditional compare instructions have a Condition Code operand, which needs + // to be parsed and an immediate operand created. + bool condCodeFourthOperand = + (Head == "ccmp" || Head == "ccmn" || Head == "fccmp" || + Head == "fccmpe" || Head == "fcsel" || Head == "csel" || + Head == "csinc" || Head == "csinv" || Head == "csneg"); + + // These instructions are aliases to some of the conditional select + // instructions. However, the condition code is inverted in the aliased + // instruction. + // + // FIXME: Is this the correct way to handle these? Or should the parser + // generate the aliased instructions directly? + bool condCodeSecondOperand = (Head == "cset" || Head == "csetm"); + bool condCodeThirdOperand = + (Head == "cinc" || Head == "cinv" || Head == "cneg"); + + // Read the remaining operands. + if (getLexer().isNot(AsmToken::EndOfStatement)) { + // Read the first operand. + if (parseOperand(Operands, false, false)) { + Parser.eatToEndOfStatement(); + return true; + } + + unsigned N = 2; + while (getLexer().is(AsmToken::Comma)) { + Parser.Lex(); // Eat the comma. + + // Parse and remember the operand. + if (parseOperand(Operands, (N == 4 && condCodeFourthOperand) || + (N == 3 && condCodeThirdOperand) || + (N == 2 && condCodeSecondOperand), + condCodeSecondOperand || condCodeThirdOperand)) { + Parser.eatToEndOfStatement(); + return true; + } + + // After successfully parsing some operands there are two special cases to + // consider (i.e. notional operands not separated by commas). Both are due + // to memory specifiers: + // + An RBrac will end an address for load/store/prefetch + // + An '!' will indicate a pre-indexed operation. + // + // It's someone else's responsibility to make sure these tokens are sane + // in the given context! + if (Parser.getTok().is(AsmToken::RBrac)) { + SMLoc Loc = Parser.getTok().getLoc(); + Operands.push_back(AArch64Operand::CreateToken("]", false, Loc, + getContext())); + Parser.Lex(); + } + + if (Parser.getTok().is(AsmToken::Exclaim)) { + SMLoc Loc = Parser.getTok().getLoc(); + Operands.push_back(AArch64Operand::CreateToken("!", false, Loc, + getContext())); + Parser.Lex(); + } + + ++N; + } + } + + if (getLexer().isNot(AsmToken::EndOfStatement)) { + SMLoc Loc = Parser.getTok().getLoc(); + Parser.eatToEndOfStatement(); + return Error(Loc, "unexpected token in argument list"); + } + + Parser.Lex(); // Consume the EndOfStatement + return false; +} + +// FIXME: This entire function is a giant hack to provide us with decent +// operand range validation/diagnostics until TableGen/MC can be extended +// to support autogeneration of this kind of validation. +bool AArch64AsmParser::validateInstruction(MCInst &Inst, + SmallVectorImpl<SMLoc> &Loc) { + const MCRegisterInfo *RI = getContext().getRegisterInfo(); + // Check for indexed addressing modes w/ the base register being the + // same as a destination/source register or pair load where + // the Rt == Rt2. All of those are undefined behaviour. + switch (Inst.getOpcode()) { + case AArch64::LDPSWpre: + case AArch64::LDPWpost: + case AArch64::LDPWpre: + case AArch64::LDPXpost: + case AArch64::LDPXpre: { + unsigned Rt = Inst.getOperand(1).getReg(); + unsigned Rt2 = Inst.getOperand(2).getReg(); + unsigned Rn = Inst.getOperand(3).getReg(); + if (RI->isSubRegisterEq(Rn, Rt)) + return Error(Loc[0], "unpredictable LDP instruction, writeback base " + "is also a destination"); + if (RI->isSubRegisterEq(Rn, Rt2)) + return Error(Loc[1], "unpredictable LDP instruction, writeback base " + "is also a destination"); + // FALLTHROUGH + } + case AArch64::LDPDi: + case AArch64::LDPQi: + case AArch64::LDPSi: + case AArch64::LDPSWi: + case AArch64::LDPWi: + case AArch64::LDPXi: { + unsigned Rt = Inst.getOperand(0).getReg(); + unsigned Rt2 = Inst.getOperand(1).getReg(); + if (Rt == Rt2) + return Error(Loc[1], "unpredictable LDP instruction, Rt2==Rt"); + break; + } + case AArch64::LDPDpost: + case AArch64::LDPDpre: + case AArch64::LDPQpost: + case AArch64::LDPQpre: + case AArch64::LDPSpost: + case AArch64::LDPSpre: + case AArch64::LDPSWpost: { + unsigned Rt = Inst.getOperand(1).getReg(); + unsigned Rt2 = Inst.getOperand(2).getReg(); + if (Rt == Rt2) + return Error(Loc[1], "unpredictable LDP instruction, Rt2==Rt"); + break; + } + case AArch64::STPDpost: + case AArch64::STPDpre: + case AArch64::STPQpost: + case AArch64::STPQpre: + case AArch64::STPSpost: + case AArch64::STPSpre: + case AArch64::STPWpost: + case AArch64::STPWpre: + case AArch64::STPXpost: + case AArch64::STPXpre: { + unsigned Rt = Inst.getOperand(1).getReg(); + unsigned Rt2 = Inst.getOperand(2).getReg(); + unsigned Rn = Inst.getOperand(3).getReg(); + if (RI->isSubRegisterEq(Rn, Rt)) + return Error(Loc[0], "unpredictable STP instruction, writeback base " + "is also a source"); + if (RI->isSubRegisterEq(Rn, Rt2)) + return Error(Loc[1], "unpredictable STP instruction, writeback base " + "is also a source"); + break; + } + case AArch64::LDRBBpre: + case AArch64::LDRBpre: + case AArch64::LDRHHpre: + case AArch64::LDRHpre: + case AArch64::LDRSBWpre: + case AArch64::LDRSBXpre: + case AArch64::LDRSHWpre: + case AArch64::LDRSHXpre: + case AArch64::LDRSWpre: + case AArch64::LDRWpre: + case AArch64::LDRXpre: + case AArch64::LDRBBpost: + case AArch64::LDRBpost: + case AArch64::LDRHHpost: + case AArch64::LDRHpost: + case AArch64::LDRSBWpost: + case AArch64::LDRSBXpost: + case AArch64::LDRSHWpost: + case AArch64::LDRSHXpost: + case AArch64::LDRSWpost: + case AArch64::LDRWpost: + case AArch64::LDRXpost: { + unsigned Rt = Inst.getOperand(1).getReg(); + unsigned Rn = Inst.getOperand(2).getReg(); + if (RI->isSubRegisterEq(Rn, Rt)) + return Error(Loc[0], "unpredictable LDR instruction, writeback base " + "is also a source"); + break; + } + case AArch64::STRBBpost: + case AArch64::STRBpost: + case AArch64::STRHHpost: + case AArch64::STRHpost: + case AArch64::STRWpost: + case AArch64::STRXpost: + case AArch64::STRBBpre: + case AArch64::STRBpre: + case AArch64::STRHHpre: + case AArch64::STRHpre: + case AArch64::STRWpre: + case AArch64::STRXpre: { + unsigned Rt = Inst.getOperand(1).getReg(); + unsigned Rn = Inst.getOperand(2).getReg(); + if (RI->isSubRegisterEq(Rn, Rt)) + return Error(Loc[0], "unpredictable STR instruction, writeback base " + "is also a source"); + break; + } + } + + // Now check immediate ranges. Separate from the above as there is overlap + // in the instructions being checked and this keeps the nested conditionals + // to a minimum. + switch (Inst.getOpcode()) { + case AArch64::ADDSWri: + case AArch64::ADDSXri: + case AArch64::ADDWri: + case AArch64::ADDXri: + case AArch64::SUBSWri: + case AArch64::SUBSXri: + case AArch64::SUBWri: + case AArch64::SUBXri: { + // Annoyingly we can't do this in the isAddSubImm predicate, so there is + // some slight duplication here. + if (Inst.getOperand(2).isExpr()) { + const MCExpr *Expr = Inst.getOperand(2).getExpr(); + AArch64MCExpr::VariantKind ELFRefKind; + MCSymbolRefExpr::VariantKind DarwinRefKind; + int64_t Addend; + if (!classifySymbolRef(Expr, ELFRefKind, DarwinRefKind, Addend)) { + return Error(Loc[2], "invalid immediate expression"); + } + + // Only allow these with ADDXri. + if ((DarwinRefKind == MCSymbolRefExpr::VK_PAGEOFF || + DarwinRefKind == MCSymbolRefExpr::VK_TLVPPAGEOFF) && + Inst.getOpcode() == AArch64::ADDXri) + return false; + + // Only allow these with ADDXri/ADDWri + if ((ELFRefKind == AArch64MCExpr::VK_LO12 || + ELFRefKind == AArch64MCExpr::VK_DTPREL_HI12 || + ELFRefKind == AArch64MCExpr::VK_DTPREL_LO12 || + ELFRefKind == AArch64MCExpr::VK_DTPREL_LO12_NC || + ELFRefKind == AArch64MCExpr::VK_TPREL_HI12 || + ELFRefKind == AArch64MCExpr::VK_TPREL_LO12 || + ELFRefKind == AArch64MCExpr::VK_TPREL_LO12_NC || + ELFRefKind == AArch64MCExpr::VK_TLSDESC_LO12) && + (Inst.getOpcode() == AArch64::ADDXri || + Inst.getOpcode() == AArch64::ADDWri)) + return false; + + // Don't allow expressions in the immediate field otherwise + return Error(Loc[2], "invalid immediate expression"); + } + return false; + } + default: + return false; + } +} + +bool AArch64AsmParser::showMatchError(SMLoc Loc, unsigned ErrCode) { + switch (ErrCode) { + case Match_MissingFeature: + return Error(Loc, + "instruction requires a CPU feature not currently enabled"); + case Match_InvalidOperand: + return Error(Loc, "invalid operand for instruction"); + case Match_InvalidSuffix: + return Error(Loc, "invalid type suffix for instruction"); + case Match_InvalidCondCode: + return Error(Loc, "expected AArch64 condition code"); + case Match_AddSubRegExtendSmall: + return Error(Loc, + "expected '[su]xt[bhw]' or 'lsl' with optional integer in range [0, 4]"); + case Match_AddSubRegExtendLarge: + return Error(Loc, + "expected 'sxtx' 'uxtx' or 'lsl' with optional integer in range [0, 4]"); + case Match_AddSubSecondSource: + return Error(Loc, + "expected compatible register, symbol or integer in range [0, 4095]"); + case Match_LogicalSecondSource: + return Error(Loc, "expected compatible register or logical immediate"); + case Match_InvalidMovImm32Shift: + return Error(Loc, "expected 'lsl' with optional integer 0 or 16"); + case Match_InvalidMovImm64Shift: + return Error(Loc, "expected 'lsl' with optional integer 0, 16, 32 or 48"); + case Match_AddSubRegShift32: + return Error(Loc, + "expected 'lsl', 'lsr' or 'asr' with optional integer in range [0, 31]"); + case Match_AddSubRegShift64: + return Error(Loc, + "expected 'lsl', 'lsr' or 'asr' with optional integer in range [0, 63]"); + case Match_InvalidFPImm: + return Error(Loc, + "expected compatible register or floating-point constant"); + case Match_InvalidMemoryIndexedSImm9: + return Error(Loc, "index must be an integer in range [-256, 255]."); + case Match_InvalidMemoryIndexed4SImm7: + return Error(Loc, "index must be a multiple of 4 in range [-256, 252]."); + case Match_InvalidMemoryIndexed8SImm7: + return Error(Loc, "index must be a multiple of 8 in range [-512, 504]."); + case Match_InvalidMemoryIndexed16SImm7: + return Error(Loc, "index must be a multiple of 16 in range [-1024, 1008]."); + case Match_InvalidMemoryWExtend8: + return Error(Loc, + "expected 'uxtw' or 'sxtw' with optional shift of #0"); + case Match_InvalidMemoryWExtend16: + return Error(Loc, + "expected 'uxtw' or 'sxtw' with optional shift of #0 or #1"); + case Match_InvalidMemoryWExtend32: + return Error(Loc, + "expected 'uxtw' or 'sxtw' with optional shift of #0 or #2"); + case Match_InvalidMemoryWExtend64: + return Error(Loc, + "expected 'uxtw' or 'sxtw' with optional shift of #0 or #3"); + case Match_InvalidMemoryWExtend128: + return Error(Loc, + "expected 'uxtw' or 'sxtw' with optional shift of #0 or #4"); + case Match_InvalidMemoryXExtend8: + return Error(Loc, + "expected 'lsl' or 'sxtx' with optional shift of #0"); + case Match_InvalidMemoryXExtend16: + return Error(Loc, + "expected 'lsl' or 'sxtx' with optional shift of #0 or #1"); + case Match_InvalidMemoryXExtend32: + return Error(Loc, + "expected 'lsl' or 'sxtx' with optional shift of #0 or #2"); + case Match_InvalidMemoryXExtend64: + return Error(Loc, + "expected 'lsl' or 'sxtx' with optional shift of #0 or #3"); + case Match_InvalidMemoryXExtend128: + return Error(Loc, + "expected 'lsl' or 'sxtx' with optional shift of #0 or #4"); + case Match_InvalidMemoryIndexed1: + return Error(Loc, "index must be an integer in range [0, 4095]."); + case Match_InvalidMemoryIndexed2: + return Error(Loc, "index must be a multiple of 2 in range [0, 8190]."); + case Match_InvalidMemoryIndexed4: + return Error(Loc, "index must be a multiple of 4 in range [0, 16380]."); + case Match_InvalidMemoryIndexed8: + return Error(Loc, "index must be a multiple of 8 in range [0, 32760]."); + case Match_InvalidMemoryIndexed16: + return Error(Loc, "index must be a multiple of 16 in range [0, 65520]."); + case Match_InvalidImm0_1: + return Error(Loc, "immediate must be an integer in range [0, 1]."); + case Match_InvalidImm0_7: + return Error(Loc, "immediate must be an integer in range [0, 7]."); + case Match_InvalidImm0_15: + return Error(Loc, "immediate must be an integer in range [0, 15]."); + case Match_InvalidImm0_31: + return Error(Loc, "immediate must be an integer in range [0, 31]."); + case Match_InvalidImm0_63: + return Error(Loc, "immediate must be an integer in range [0, 63]."); + case Match_InvalidImm0_127: + return Error(Loc, "immediate must be an integer in range [0, 127]."); + case Match_InvalidImm0_65535: + return Error(Loc, "immediate must be an integer in range [0, 65535]."); + case Match_InvalidImm1_8: + return Error(Loc, "immediate must be an integer in range [1, 8]."); + case Match_InvalidImm1_16: + return Error(Loc, "immediate must be an integer in range [1, 16]."); + case Match_InvalidImm1_32: + return Error(Loc, "immediate must be an integer in range [1, 32]."); + case Match_InvalidImm1_64: + return Error(Loc, "immediate must be an integer in range [1, 64]."); + case Match_InvalidIndex1: + return Error(Loc, "expected lane specifier '[1]'"); + case Match_InvalidIndexB: + return Error(Loc, "vector lane must be an integer in range [0, 15]."); + case Match_InvalidIndexH: + return Error(Loc, "vector lane must be an integer in range [0, 7]."); + case Match_InvalidIndexS: + return Error(Loc, "vector lane must be an integer in range [0, 3]."); + case Match_InvalidIndexD: + return Error(Loc, "vector lane must be an integer in range [0, 1]."); + case Match_InvalidLabel: + return Error(Loc, "expected label or encodable integer pc offset"); + case Match_MRS: + return Error(Loc, "expected readable system register"); + case Match_MSR: + return Error(Loc, "expected writable system register or pstate"); + case Match_MnemonicFail: + return Error(Loc, "unrecognized instruction mnemonic"); + default: + llvm_unreachable("unexpected error code!"); + } +} + +static const char *getSubtargetFeatureName(uint64_t Val); + +bool AArch64AsmParser::MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode, + OperandVector &Operands, + MCStreamer &Out, + uint64_t &ErrorInfo, + bool MatchingInlineAsm) { + assert(!Operands.empty() && "Unexpect empty operand list!"); + AArch64Operand &Op = static_cast<AArch64Operand &>(*Operands[0]); + assert(Op.isToken() && "Leading operand should always be a mnemonic!"); + + StringRef Tok = Op.getToken(); + unsigned NumOperands = Operands.size(); + + if (NumOperands == 4 && Tok == "lsl") { + AArch64Operand &Op2 = static_cast<AArch64Operand &>(*Operands[2]); + AArch64Operand &Op3 = static_cast<AArch64Operand &>(*Operands[3]); + if (Op2.isReg() && Op3.isImm()) { + const MCConstantExpr *Op3CE = dyn_cast<MCConstantExpr>(Op3.getImm()); + if (Op3CE) { + uint64_t Op3Val = Op3CE->getValue(); + uint64_t NewOp3Val = 0; + uint64_t NewOp4Val = 0; + if (AArch64MCRegisterClasses[AArch64::GPR32allRegClassID].contains( + Op2.getReg())) { + NewOp3Val = (32 - Op3Val) & 0x1f; + NewOp4Val = 31 - Op3Val; + } else { + NewOp3Val = (64 - Op3Val) & 0x3f; + NewOp4Val = 63 - Op3Val; + } + + const MCExpr *NewOp3 = MCConstantExpr::create(NewOp3Val, getContext()); + const MCExpr *NewOp4 = MCConstantExpr::create(NewOp4Val, getContext()); + + Operands[0] = AArch64Operand::CreateToken( + "ubfm", false, Op.getStartLoc(), getContext()); + Operands.push_back(AArch64Operand::CreateImm( + NewOp4, Op3.getStartLoc(), Op3.getEndLoc(), getContext())); + Operands[3] = AArch64Operand::CreateImm(NewOp3, Op3.getStartLoc(), + Op3.getEndLoc(), getContext()); + } + } + } else if (NumOperands == 4 && Tok == "bfc") { + // FIXME: Horrible hack to handle BFC->BFM alias. + AArch64Operand &Op1 = static_cast<AArch64Operand &>(*Operands[1]); + AArch64Operand LSBOp = static_cast<AArch64Operand &>(*Operands[2]); + AArch64Operand WidthOp = static_cast<AArch64Operand &>(*Operands[3]); + + if (Op1.isReg() && LSBOp.isImm() && WidthOp.isImm()) { + const MCConstantExpr *LSBCE = dyn_cast<MCConstantExpr>(LSBOp.getImm()); + const MCConstantExpr *WidthCE = dyn_cast<MCConstantExpr>(WidthOp.getImm()); + + if (LSBCE && WidthCE) { + uint64_t LSB = LSBCE->getValue(); + uint64_t Width = WidthCE->getValue(); + + uint64_t RegWidth = 0; + if (AArch64MCRegisterClasses[AArch64::GPR64allRegClassID].contains( + Op1.getReg())) + RegWidth = 64; + else + RegWidth = 32; + + if (LSB >= RegWidth) + return Error(LSBOp.getStartLoc(), + "expected integer in range [0, 31]"); + if (Width < 1 || Width > RegWidth) + return Error(WidthOp.getStartLoc(), + "expected integer in range [1, 32]"); + + uint64_t ImmR = 0; + if (RegWidth == 32) + ImmR = (32 - LSB) & 0x1f; + else + ImmR = (64 - LSB) & 0x3f; + + uint64_t ImmS = Width - 1; + + if (ImmR != 0 && ImmS >= ImmR) + return Error(WidthOp.getStartLoc(), + "requested insert overflows register"); + + const MCExpr *ImmRExpr = MCConstantExpr::create(ImmR, getContext()); + const MCExpr *ImmSExpr = MCConstantExpr::create(ImmS, getContext()); + Operands[0] = AArch64Operand::CreateToken( + "bfm", false, Op.getStartLoc(), getContext()); + Operands[2] = AArch64Operand::CreateReg( + RegWidth == 32 ? AArch64::WZR : AArch64::XZR, false, SMLoc(), + SMLoc(), getContext()); + Operands[3] = AArch64Operand::CreateImm( + ImmRExpr, LSBOp.getStartLoc(), LSBOp.getEndLoc(), getContext()); + Operands.emplace_back( + AArch64Operand::CreateImm(ImmSExpr, WidthOp.getStartLoc(), + WidthOp.getEndLoc(), getContext())); + } + } + } else if (NumOperands == 5) { + // FIXME: Horrible hack to handle the BFI -> BFM, SBFIZ->SBFM, and + // UBFIZ -> UBFM aliases. + if (Tok == "bfi" || Tok == "sbfiz" || Tok == "ubfiz") { + AArch64Operand &Op1 = static_cast<AArch64Operand &>(*Operands[1]); + AArch64Operand &Op3 = static_cast<AArch64Operand &>(*Operands[3]); + AArch64Operand &Op4 = static_cast<AArch64Operand &>(*Operands[4]); + + if (Op1.isReg() && Op3.isImm() && Op4.isImm()) { + const MCConstantExpr *Op3CE = dyn_cast<MCConstantExpr>(Op3.getImm()); + const MCConstantExpr *Op4CE = dyn_cast<MCConstantExpr>(Op4.getImm()); + + if (Op3CE && Op4CE) { + uint64_t Op3Val = Op3CE->getValue(); + uint64_t Op4Val = Op4CE->getValue(); + + uint64_t RegWidth = 0; + if (AArch64MCRegisterClasses[AArch64::GPR64allRegClassID].contains( + Op1.getReg())) + RegWidth = 64; + else + RegWidth = 32; + + if (Op3Val >= RegWidth) + return Error(Op3.getStartLoc(), + "expected integer in range [0, 31]"); + if (Op4Val < 1 || Op4Val > RegWidth) + return Error(Op4.getStartLoc(), + "expected integer in range [1, 32]"); + + uint64_t NewOp3Val = 0; + if (RegWidth == 32) + NewOp3Val = (32 - Op3Val) & 0x1f; + else + NewOp3Val = (64 - Op3Val) & 0x3f; + + uint64_t NewOp4Val = Op4Val - 1; + + if (NewOp3Val != 0 && NewOp4Val >= NewOp3Val) + return Error(Op4.getStartLoc(), + "requested insert overflows register"); + + const MCExpr *NewOp3 = + MCConstantExpr::create(NewOp3Val, getContext()); + const MCExpr *NewOp4 = + MCConstantExpr::create(NewOp4Val, getContext()); + Operands[3] = AArch64Operand::CreateImm( + NewOp3, Op3.getStartLoc(), Op3.getEndLoc(), getContext()); + Operands[4] = AArch64Operand::CreateImm( + NewOp4, Op4.getStartLoc(), Op4.getEndLoc(), getContext()); + if (Tok == "bfi") + Operands[0] = AArch64Operand::CreateToken( + "bfm", false, Op.getStartLoc(), getContext()); + else if (Tok == "sbfiz") + Operands[0] = AArch64Operand::CreateToken( + "sbfm", false, Op.getStartLoc(), getContext()); + else if (Tok == "ubfiz") + Operands[0] = AArch64Operand::CreateToken( + "ubfm", false, Op.getStartLoc(), getContext()); + else + llvm_unreachable("No valid mnemonic for alias?"); + } + } + + // FIXME: Horrible hack to handle the BFXIL->BFM, SBFX->SBFM, and + // UBFX -> UBFM aliases. + } else if (NumOperands == 5 && + (Tok == "bfxil" || Tok == "sbfx" || Tok == "ubfx")) { + AArch64Operand &Op1 = static_cast<AArch64Operand &>(*Operands[1]); + AArch64Operand &Op3 = static_cast<AArch64Operand &>(*Operands[3]); + AArch64Operand &Op4 = static_cast<AArch64Operand &>(*Operands[4]); + + if (Op1.isReg() && Op3.isImm() && Op4.isImm()) { + const MCConstantExpr *Op3CE = dyn_cast<MCConstantExpr>(Op3.getImm()); + const MCConstantExpr *Op4CE = dyn_cast<MCConstantExpr>(Op4.getImm()); + + if (Op3CE && Op4CE) { + uint64_t Op3Val = Op3CE->getValue(); + uint64_t Op4Val = Op4CE->getValue(); + + uint64_t RegWidth = 0; + if (AArch64MCRegisterClasses[AArch64::GPR64allRegClassID].contains( + Op1.getReg())) + RegWidth = 64; + else + RegWidth = 32; + + if (Op3Val >= RegWidth) + return Error(Op3.getStartLoc(), + "expected integer in range [0, 31]"); + if (Op4Val < 1 || Op4Val > RegWidth) + return Error(Op4.getStartLoc(), + "expected integer in range [1, 32]"); + + uint64_t NewOp4Val = Op3Val + Op4Val - 1; + + if (NewOp4Val >= RegWidth || NewOp4Val < Op3Val) + return Error(Op4.getStartLoc(), + "requested extract overflows register"); + + const MCExpr *NewOp4 = + MCConstantExpr::create(NewOp4Val, getContext()); + Operands[4] = AArch64Operand::CreateImm( + NewOp4, Op4.getStartLoc(), Op4.getEndLoc(), getContext()); + if (Tok == "bfxil") + Operands[0] = AArch64Operand::CreateToken( + "bfm", false, Op.getStartLoc(), getContext()); + else if (Tok == "sbfx") + Operands[0] = AArch64Operand::CreateToken( + "sbfm", false, Op.getStartLoc(), getContext()); + else if (Tok == "ubfx") + Operands[0] = AArch64Operand::CreateToken( + "ubfm", false, Op.getStartLoc(), getContext()); + else + llvm_unreachable("No valid mnemonic for alias?"); + } + } + } + } + // FIXME: Horrible hack for sxtw and uxtw with Wn src and Xd dst operands. + // InstAlias can't quite handle this since the reg classes aren't + // subclasses. + if (NumOperands == 3 && (Tok == "sxtw" || Tok == "uxtw")) { + // The source register can be Wn here, but the matcher expects a + // GPR64. Twiddle it here if necessary. + AArch64Operand &Op = static_cast<AArch64Operand &>(*Operands[2]); + if (Op.isReg()) { + unsigned Reg = getXRegFromWReg(Op.getReg()); + Operands[2] = AArch64Operand::CreateReg(Reg, false, Op.getStartLoc(), + Op.getEndLoc(), getContext()); + } + } + // FIXME: Likewise for sxt[bh] with a Xd dst operand + else if (NumOperands == 3 && (Tok == "sxtb" || Tok == "sxth")) { + AArch64Operand &Op = static_cast<AArch64Operand &>(*Operands[1]); + if (Op.isReg() && + AArch64MCRegisterClasses[AArch64::GPR64allRegClassID].contains( + Op.getReg())) { + // The source register can be Wn here, but the matcher expects a + // GPR64. Twiddle it here if necessary. + AArch64Operand &Op = static_cast<AArch64Operand &>(*Operands[2]); + if (Op.isReg()) { + unsigned Reg = getXRegFromWReg(Op.getReg()); + Operands[2] = AArch64Operand::CreateReg(Reg, false, Op.getStartLoc(), + Op.getEndLoc(), getContext()); + } + } + } + // FIXME: Likewise for uxt[bh] with a Xd dst operand + else if (NumOperands == 3 && (Tok == "uxtb" || Tok == "uxth")) { + AArch64Operand &Op = static_cast<AArch64Operand &>(*Operands[1]); + if (Op.isReg() && + AArch64MCRegisterClasses[AArch64::GPR64allRegClassID].contains( + Op.getReg())) { + // The source register can be Wn here, but the matcher expects a + // GPR32. Twiddle it here if necessary. + AArch64Operand &Op = static_cast<AArch64Operand &>(*Operands[1]); + if (Op.isReg()) { + unsigned Reg = getWRegFromXReg(Op.getReg()); + Operands[1] = AArch64Operand::CreateReg(Reg, false, Op.getStartLoc(), + Op.getEndLoc(), getContext()); + } + } + } + + // Yet another horrible hack to handle FMOV Rd, #0.0 using [WX]ZR. + if (NumOperands == 3 && Tok == "fmov") { + AArch64Operand &RegOp = static_cast<AArch64Operand &>(*Operands[1]); + AArch64Operand &ImmOp = static_cast<AArch64Operand &>(*Operands[2]); + if (RegOp.isReg() && ImmOp.isFPImm() && ImmOp.getFPImm() == (unsigned)-1) { + unsigned zreg = + !AArch64MCRegisterClasses[AArch64::FPR64RegClassID].contains( + RegOp.getReg()) + ? AArch64::WZR + : AArch64::XZR; + Operands[2] = AArch64Operand::CreateReg(zreg, false, Op.getStartLoc(), + Op.getEndLoc(), getContext()); + } + } + + MCInst Inst; + // First try to match against the secondary set of tables containing the + // short-form NEON instructions (e.g. "fadd.2s v0, v1, v2"). + unsigned MatchResult = + MatchInstructionImpl(Operands, Inst, ErrorInfo, MatchingInlineAsm, 1); + + // If that fails, try against the alternate table containing long-form NEON: + // "fadd v0.2s, v1.2s, v2.2s" + if (MatchResult != Match_Success) { + // But first, save the short-form match result: we can use it in case the + // long-form match also fails. + auto ShortFormNEONErrorInfo = ErrorInfo; + auto ShortFormNEONMatchResult = MatchResult; + + MatchResult = + MatchInstructionImpl(Operands, Inst, ErrorInfo, MatchingInlineAsm, 0); + + // Now, both matches failed, and the long-form match failed on the mnemonic + // suffix token operand. The short-form match failure is probably more + // relevant: use it instead. + if (MatchResult == Match_InvalidOperand && ErrorInfo == 1 && + Operands.size() > 1 && ((AArch64Operand &)*Operands[1]).isToken() && + ((AArch64Operand &)*Operands[1]).isTokenSuffix()) { + MatchResult = ShortFormNEONMatchResult; + ErrorInfo = ShortFormNEONErrorInfo; + } + } + + + switch (MatchResult) { + case Match_Success: { + // Perform range checking and other semantic validations + SmallVector<SMLoc, 8> OperandLocs; + NumOperands = Operands.size(); + for (unsigned i = 1; i < NumOperands; ++i) + OperandLocs.push_back(Operands[i]->getStartLoc()); + if (validateInstruction(Inst, OperandLocs)) + return true; + + Inst.setLoc(IDLoc); + Out.EmitInstruction(Inst, getSTI()); + return false; + } + case Match_MissingFeature: { + assert(ErrorInfo && "Unknown missing feature!"); + // Special case the error message for the very common case where only + // a single subtarget feature is missing (neon, e.g.). + std::string Msg = "instruction requires:"; + uint64_t Mask = 1; + for (unsigned i = 0; i < (sizeof(ErrorInfo)*8-1); ++i) { + if (ErrorInfo & Mask) { + Msg += " "; + Msg += getSubtargetFeatureName(ErrorInfo & Mask); + } + Mask <<= 1; + } + return Error(IDLoc, Msg); + } + case Match_MnemonicFail: + return showMatchError(IDLoc, MatchResult); + case Match_InvalidOperand: { + SMLoc ErrorLoc = IDLoc; + + if (ErrorInfo != ~0ULL) { + if (ErrorInfo >= Operands.size()) + return Error(IDLoc, "too few operands for instruction"); + + ErrorLoc = ((AArch64Operand &)*Operands[ErrorInfo]).getStartLoc(); + if (ErrorLoc == SMLoc()) + ErrorLoc = IDLoc; + } + // If the match failed on a suffix token operand, tweak the diagnostic + // accordingly. + if (((AArch64Operand &)*Operands[ErrorInfo]).isToken() && + ((AArch64Operand &)*Operands[ErrorInfo]).isTokenSuffix()) + MatchResult = Match_InvalidSuffix; + + return showMatchError(ErrorLoc, MatchResult); + } + case Match_InvalidMemoryIndexed1: + case Match_InvalidMemoryIndexed2: + case Match_InvalidMemoryIndexed4: + case Match_InvalidMemoryIndexed8: + case Match_InvalidMemoryIndexed16: + case Match_InvalidCondCode: + case Match_AddSubRegExtendSmall: + case Match_AddSubRegExtendLarge: + case Match_AddSubSecondSource: + case Match_LogicalSecondSource: + case Match_AddSubRegShift32: + case Match_AddSubRegShift64: + case Match_InvalidMovImm32Shift: + case Match_InvalidMovImm64Shift: + case Match_InvalidFPImm: + case Match_InvalidMemoryWExtend8: + case Match_InvalidMemoryWExtend16: + case Match_InvalidMemoryWExtend32: + case Match_InvalidMemoryWExtend64: + case Match_InvalidMemoryWExtend128: + case Match_InvalidMemoryXExtend8: + case Match_InvalidMemoryXExtend16: + case Match_InvalidMemoryXExtend32: + case Match_InvalidMemoryXExtend64: + case Match_InvalidMemoryXExtend128: + case Match_InvalidMemoryIndexed4SImm7: + case Match_InvalidMemoryIndexed8SImm7: + case Match_InvalidMemoryIndexed16SImm7: + case Match_InvalidMemoryIndexedSImm9: + case Match_InvalidImm0_1: + case Match_InvalidImm0_7: + case Match_InvalidImm0_15: + case Match_InvalidImm0_31: + case Match_InvalidImm0_63: + case Match_InvalidImm0_127: + case Match_InvalidImm0_65535: + case Match_InvalidImm1_8: + case Match_InvalidImm1_16: + case Match_InvalidImm1_32: + case Match_InvalidImm1_64: + case Match_InvalidIndex1: + case Match_InvalidIndexB: + case Match_InvalidIndexH: + case Match_InvalidIndexS: + case Match_InvalidIndexD: + case Match_InvalidLabel: + case Match_MSR: + case Match_MRS: { + if (ErrorInfo >= Operands.size()) + return Error(IDLoc, "too few operands for instruction"); + // Any time we get here, there's nothing fancy to do. Just get the + // operand SMLoc and display the diagnostic. + SMLoc ErrorLoc = ((AArch64Operand &)*Operands[ErrorInfo]).getStartLoc(); + if (ErrorLoc == SMLoc()) + ErrorLoc = IDLoc; + return showMatchError(ErrorLoc, MatchResult); + } + } + + llvm_unreachable("Implement any new match types added!"); +} + +/// ParseDirective parses the arm specific directives +bool AArch64AsmParser::ParseDirective(AsmToken DirectiveID) { + const MCObjectFileInfo::Environment Format = + getContext().getObjectFileInfo()->getObjectFileType(); + bool IsMachO = Format == MCObjectFileInfo::IsMachO; + bool IsCOFF = Format == MCObjectFileInfo::IsCOFF; + + StringRef IDVal = DirectiveID.getIdentifier(); + SMLoc Loc = DirectiveID.getLoc(); + if (IDVal == ".hword") + return parseDirectiveWord(2, Loc); + if (IDVal == ".word") + return parseDirectiveWord(4, Loc); + if (IDVal == ".xword") + return parseDirectiveWord(8, Loc); + if (IDVal == ".tlsdesccall") + return parseDirectiveTLSDescCall(Loc); + if (IDVal == ".ltorg" || IDVal == ".pool") + return parseDirectiveLtorg(Loc); + if (IDVal == ".unreq") + return parseDirectiveUnreq(Loc); + + if (!IsMachO && !IsCOFF) { + if (IDVal == ".inst") + return parseDirectiveInst(Loc); + } + + return parseDirectiveLOH(IDVal, Loc); +} + +/// parseDirectiveWord +/// ::= .word [ expression (, expression)* ] +bool AArch64AsmParser::parseDirectiveWord(unsigned Size, SMLoc L) { + MCAsmParser &Parser = getParser(); + if (getLexer().isNot(AsmToken::EndOfStatement)) { + for (;;) { + const MCExpr *Value; + if (getParser().parseExpression(Value)) + return true; + + getParser().getStreamer().EmitValue(Value, Size, L); + + if (getLexer().is(AsmToken::EndOfStatement)) + break; + + // FIXME: Improve diagnostic. + if (getLexer().isNot(AsmToken::Comma)) + return Error(L, "unexpected token in directive"); + Parser.Lex(); + } + } + + Parser.Lex(); + return false; +} + +/// parseDirectiveInst +/// ::= .inst opcode [, ...] +bool AArch64AsmParser::parseDirectiveInst(SMLoc Loc) { + MCAsmParser &Parser = getParser(); + if (getLexer().is(AsmToken::EndOfStatement)) { + Parser.eatToEndOfStatement(); + Error(Loc, "expected expression following directive"); + return false; + } + + for (;;) { + const MCExpr *Expr; + + if (getParser().parseExpression(Expr)) { + Error(Loc, "expected expression"); + return false; + } + + const MCConstantExpr *Value = dyn_cast_or_null<MCConstantExpr>(Expr); + if (!Value) { + Error(Loc, "expected constant expression"); + return false; + } + + getTargetStreamer().emitInst(Value->getValue()); + + if (getLexer().is(AsmToken::EndOfStatement)) + break; + + if (getLexer().isNot(AsmToken::Comma)) { + Error(Loc, "unexpected token in directive"); + return false; + } + + Parser.Lex(); // Eat comma. + } + + Parser.Lex(); + return false; +} + +// parseDirectiveTLSDescCall: +// ::= .tlsdesccall symbol +bool AArch64AsmParser::parseDirectiveTLSDescCall(SMLoc L) { + StringRef Name; + if (getParser().parseIdentifier(Name)) + return Error(L, "expected symbol after directive"); + + MCSymbol *Sym = getContext().getOrCreateSymbol(Name); + const MCExpr *Expr = MCSymbolRefExpr::create(Sym, getContext()); + Expr = AArch64MCExpr::create(Expr, AArch64MCExpr::VK_TLSDESC, getContext()); + + MCInst Inst; + Inst.setOpcode(AArch64::TLSDESCCALL); + Inst.addOperand(MCOperand::createExpr(Expr)); + + getParser().getStreamer().EmitInstruction(Inst, getSTI()); + return false; +} + +/// ::= .loh <lohName | lohId> label1, ..., labelN +/// The number of arguments depends on the loh identifier. +bool AArch64AsmParser::parseDirectiveLOH(StringRef IDVal, SMLoc Loc) { + if (IDVal != MCLOHDirectiveName()) + return true; + MCLOHType Kind; + if (getParser().getTok().isNot(AsmToken::Identifier)) { + if (getParser().getTok().isNot(AsmToken::Integer)) + return TokError("expected an identifier or a number in directive"); + // We successfully get a numeric value for the identifier. + // Check if it is valid. + int64_t Id = getParser().getTok().getIntVal(); + if (Id <= -1U && !isValidMCLOHType(Id)) + return TokError("invalid numeric identifier in directive"); + Kind = (MCLOHType)Id; + } else { + StringRef Name = getTok().getIdentifier(); + // We successfully parse an identifier. + // Check if it is a recognized one. + int Id = MCLOHNameToId(Name); + + if (Id == -1) + return TokError("invalid identifier in directive"); + Kind = (MCLOHType)Id; + } + // Consume the identifier. + Lex(); + // Get the number of arguments of this LOH. + int NbArgs = MCLOHIdToNbArgs(Kind); + + assert(NbArgs != -1 && "Invalid number of arguments"); + + SmallVector<MCSymbol *, 3> Args; + for (int Idx = 0; Idx < NbArgs; ++Idx) { + StringRef Name; + if (getParser().parseIdentifier(Name)) + return TokError("expected identifier in directive"); + Args.push_back(getContext().getOrCreateSymbol(Name)); + + if (Idx + 1 == NbArgs) + break; + if (getLexer().isNot(AsmToken::Comma)) + return TokError("unexpected token in '" + Twine(IDVal) + "' directive"); + Lex(); + } + if (getLexer().isNot(AsmToken::EndOfStatement)) + return TokError("unexpected token in '" + Twine(IDVal) + "' directive"); + + getStreamer().EmitLOHDirective((MCLOHType)Kind, Args); + return false; +} + +/// parseDirectiveLtorg +/// ::= .ltorg | .pool +bool AArch64AsmParser::parseDirectiveLtorg(SMLoc L) { + getTargetStreamer().emitCurrentConstantPool(); + return false; +} + +/// parseDirectiveReq +/// ::= name .req registername +bool AArch64AsmParser::parseDirectiveReq(StringRef Name, SMLoc L) { + MCAsmParser &Parser = getParser(); + Parser.Lex(); // Eat the '.req' token. + SMLoc SRegLoc = getLoc(); + unsigned RegNum = tryParseRegister(); + bool IsVector = false; + + if (RegNum == static_cast<unsigned>(-1)) { + StringRef Kind; + RegNum = tryMatchVectorRegister(Kind, false); + if (!Kind.empty()) { + Error(SRegLoc, "vector register without type specifier expected"); + return false; + } + IsVector = true; + } + + if (RegNum == static_cast<unsigned>(-1)) { + Parser.eatToEndOfStatement(); + Error(SRegLoc, "register name or alias expected"); + return false; + } + + // Shouldn't be anything else. + if (Parser.getTok().isNot(AsmToken::EndOfStatement)) { + Error(Parser.getTok().getLoc(), "unexpected input in .req directive"); + Parser.eatToEndOfStatement(); + return false; + } + + Parser.Lex(); // Consume the EndOfStatement + + auto pair = std::make_pair(IsVector, RegNum); + if (RegisterReqs.insert(std::make_pair(Name, pair)).first->second != pair) + Warning(L, "ignoring redefinition of register alias '" + Name + "'"); + + return true; +} + +/// parseDirectiveUneq +/// ::= .unreq registername +bool AArch64AsmParser::parseDirectiveUnreq(SMLoc L) { + MCAsmParser &Parser = getParser(); + if (Parser.getTok().isNot(AsmToken::Identifier)) { + Error(Parser.getTok().getLoc(), "unexpected input in .unreq directive."); + Parser.eatToEndOfStatement(); + return false; + } + RegisterReqs.erase(Parser.getTok().getIdentifier().lower()); + Parser.Lex(); // Eat the identifier. + return false; +} + +bool +AArch64AsmParser::classifySymbolRef(const MCExpr *Expr, + AArch64MCExpr::VariantKind &ELFRefKind, + MCSymbolRefExpr::VariantKind &DarwinRefKind, + int64_t &Addend) { + ELFRefKind = AArch64MCExpr::VK_INVALID; + DarwinRefKind = MCSymbolRefExpr::VK_None; + Addend = 0; + + if (const AArch64MCExpr *AE = dyn_cast<AArch64MCExpr>(Expr)) { + ELFRefKind = AE->getKind(); + Expr = AE->getSubExpr(); + } + + const MCSymbolRefExpr *SE = dyn_cast<MCSymbolRefExpr>(Expr); + if (SE) { + // It's a simple symbol reference with no addend. + DarwinRefKind = SE->getKind(); + return true; + } + + const MCBinaryExpr *BE = dyn_cast<MCBinaryExpr>(Expr); + if (!BE) + return false; + + SE = dyn_cast<MCSymbolRefExpr>(BE->getLHS()); + if (!SE) + return false; + DarwinRefKind = SE->getKind(); + + if (BE->getOpcode() != MCBinaryExpr::Add && + BE->getOpcode() != MCBinaryExpr::Sub) + return false; + + // See if the addend is is a constant, otherwise there's more going + // on here than we can deal with. + auto AddendExpr = dyn_cast<MCConstantExpr>(BE->getRHS()); + if (!AddendExpr) + return false; + + Addend = AddendExpr->getValue(); + if (BE->getOpcode() == MCBinaryExpr::Sub) + Addend = -Addend; + + // It's some symbol reference + a constant addend, but really + // shouldn't use both Darwin and ELF syntax. + return ELFRefKind == AArch64MCExpr::VK_INVALID || + DarwinRefKind == MCSymbolRefExpr::VK_None; +} + +/// Force static initialization. +extern "C" void LLVMInitializeAArch64AsmParser() { + RegisterMCAsmParser<AArch64AsmParser> X(TheAArch64leTarget); + RegisterMCAsmParser<AArch64AsmParser> Y(TheAArch64beTarget); + RegisterMCAsmParser<AArch64AsmParser> Z(TheARM64Target); +} + +#define GET_REGISTER_MATCHER +#define GET_SUBTARGET_FEATURE_NAME +#define GET_MATCHER_IMPLEMENTATION +#include "AArch64GenAsmMatcher.inc" + +// Define this matcher function after the auto-generated include so we +// have the match class enum definitions. +unsigned AArch64AsmParser::validateTargetOperandClass(MCParsedAsmOperand &AsmOp, + unsigned Kind) { + AArch64Operand &Op = static_cast<AArch64Operand &>(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. + int64_t ExpectedVal; + switch (Kind) { + default: + return Match_InvalidOperand; + case MCK__35_0: + ExpectedVal = 0; + break; + case MCK__35_1: + ExpectedVal = 1; + break; + case MCK__35_12: + ExpectedVal = 12; + break; + case MCK__35_16: + ExpectedVal = 16; + break; + case MCK__35_2: + ExpectedVal = 2; + break; + case MCK__35_24: + ExpectedVal = 24; + break; + case MCK__35_3: + ExpectedVal = 3; + break; + case MCK__35_32: + ExpectedVal = 32; + break; + case MCK__35_4: + ExpectedVal = 4; + break; + case MCK__35_48: + ExpectedVal = 48; + break; + case MCK__35_6: + ExpectedVal = 6; + break; + case MCK__35_64: + ExpectedVal = 64; + break; + case MCK__35_8: + ExpectedVal = 8; + break; + } + if (!Op.isImm()) + return Match_InvalidOperand; + const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op.getImm()); + if (!CE) + return Match_InvalidOperand; + if (CE->getValue() == ExpectedVal) + return Match_Success; + return Match_InvalidOperand; +} + + +AArch64AsmParser::OperandMatchResultTy +AArch64AsmParser::tryParseGPRSeqPair(OperandVector &Operands) { + + SMLoc S = getLoc(); + + if (getParser().getTok().isNot(AsmToken::Identifier)) { + Error(S, "expected register"); + return MatchOperand_ParseFail; + } + + int FirstReg = tryParseRegister(); + if (FirstReg == -1) { + return MatchOperand_ParseFail; + } + const MCRegisterClass &WRegClass = + AArch64MCRegisterClasses[AArch64::GPR32RegClassID]; + const MCRegisterClass &XRegClass = + AArch64MCRegisterClasses[AArch64::GPR64RegClassID]; + + bool isXReg = XRegClass.contains(FirstReg), + isWReg = WRegClass.contains(FirstReg); + if (!isXReg && !isWReg) { + Error(S, "expected first even register of a " + "consecutive same-size even/odd register pair"); + return MatchOperand_ParseFail; + } + + const MCRegisterInfo *RI = getContext().getRegisterInfo(); + unsigned FirstEncoding = RI->getEncodingValue(FirstReg); + + if (FirstEncoding & 0x1) { + Error(S, "expected first even register of a " + "consecutive same-size even/odd register pair"); + return MatchOperand_ParseFail; + } + + SMLoc M = getLoc(); + if (getParser().getTok().isNot(AsmToken::Comma)) { + Error(M, "expected comma"); + return MatchOperand_ParseFail; + } + // Eat the comma + getParser().Lex(); + + SMLoc E = getLoc(); + int SecondReg = tryParseRegister(); + if (SecondReg ==-1) { + return MatchOperand_ParseFail; + } + + if (RI->getEncodingValue(SecondReg) != FirstEncoding + 1 || + (isXReg && !XRegClass.contains(SecondReg)) || + (isWReg && !WRegClass.contains(SecondReg))) { + Error(E,"expected second odd register of a " + "consecutive same-size even/odd register pair"); + return MatchOperand_ParseFail; + } + + unsigned Pair = 0; + if(isXReg) { + Pair = RI->getMatchingSuperReg(FirstReg, AArch64::sube64, + &AArch64MCRegisterClasses[AArch64::XSeqPairsClassRegClassID]); + } else { + Pair = RI->getMatchingSuperReg(FirstReg, AArch64::sube32, + &AArch64MCRegisterClasses[AArch64::WSeqPairsClassRegClassID]); + } + + Operands.push_back(AArch64Operand::CreateReg(Pair, false, S, getLoc(), + getContext())); + + return MatchOperand_Success; +} |
