diff options
Diffstat (limited to 'lib/Target/Mips/AsmParser/MipsAsmParser.cpp')
| -rw-r--r-- | lib/Target/Mips/AsmParser/MipsAsmParser.cpp | 781 |
1 files changed, 581 insertions, 200 deletions
diff --git a/lib/Target/Mips/AsmParser/MipsAsmParser.cpp b/lib/Target/Mips/AsmParser/MipsAsmParser.cpp index 86fd386..0c06be8 100644 --- a/lib/Target/Mips/AsmParser/MipsAsmParser.cpp +++ b/lib/Target/Mips/AsmParser/MipsAsmParser.cpp @@ -72,72 +72,69 @@ class MipsAsmParser : public MCTargetAsmParser { #define GET_ASSEMBLER_HEADER #include "MipsGenAsmMatcher.inc" + unsigned checkTargetMatchPredicate(MCInst &Inst) override; + bool MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode, - SmallVectorImpl<MCParsedAsmOperand *> &Operands, - MCStreamer &Out, unsigned &ErrorInfo, + OperandVector &Operands, MCStreamer &Out, + unsigned &ErrorInfo, bool MatchingInlineAsm) override; /// Parse a register as used in CFI directives bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc) override; - bool ParseParenSuffix(StringRef Name, - SmallVectorImpl<MCParsedAsmOperand *> &Operands); + bool ParseParenSuffix(StringRef Name, OperandVector &Operands); - bool ParseBracketSuffix(StringRef Name, - SmallVectorImpl<MCParsedAsmOperand *> &Operands); + bool ParseBracketSuffix(StringRef Name, OperandVector &Operands); - bool - ParseInstruction(ParseInstructionInfo &Info, StringRef Name, SMLoc NameLoc, - SmallVectorImpl<MCParsedAsmOperand *> &Operands) override; + bool ParseInstruction(ParseInstructionInfo &Info, StringRef Name, + SMLoc NameLoc, OperandVector &Operands) override; bool ParseDirective(AsmToken DirectiveID) override; - MipsAsmParser::OperandMatchResultTy - parseMemOperand(SmallVectorImpl<MCParsedAsmOperand *> &Operands); - - MipsAsmParser::OperandMatchResultTy MatchAnyRegisterNameWithoutDollar( - SmallVectorImpl<MCParsedAsmOperand *> &Operands, StringRef Identifier, - SMLoc S); + MipsAsmParser::OperandMatchResultTy parseMemOperand(OperandVector &Operands); MipsAsmParser::OperandMatchResultTy - MatchAnyRegisterWithoutDollar(SmallVectorImpl<MCParsedAsmOperand *> &Operands, - SMLoc S); + MatchAnyRegisterNameWithoutDollar(OperandVector &Operands, + StringRef Identifier, SMLoc S); MipsAsmParser::OperandMatchResultTy - ParseAnyRegister(SmallVectorImpl<MCParsedAsmOperand *> &Operands); + MatchAnyRegisterWithoutDollar(OperandVector &Operands, SMLoc S); - MipsAsmParser::OperandMatchResultTy - ParseImm(SmallVectorImpl<MCParsedAsmOperand *> &Operands); + MipsAsmParser::OperandMatchResultTy ParseAnyRegister(OperandVector &Operands); - MipsAsmParser::OperandMatchResultTy - ParseJumpTarget(SmallVectorImpl<MCParsedAsmOperand *> &Operands); + MipsAsmParser::OperandMatchResultTy ParseImm(OperandVector &Operands); - MipsAsmParser::OperandMatchResultTy - parseInvNum(SmallVectorImpl<MCParsedAsmOperand *> &Operands); + MipsAsmParser::OperandMatchResultTy ParseJumpTarget(OperandVector &Operands); - MipsAsmParser::OperandMatchResultTy - ParseLSAImm(SmallVectorImpl<MCParsedAsmOperand *> &Operands); + MipsAsmParser::OperandMatchResultTy parseInvNum(OperandVector &Operands); - bool searchSymbolAlias(SmallVectorImpl<MCParsedAsmOperand *> &Operands); + MipsAsmParser::OperandMatchResultTy ParseLSAImm(OperandVector &Operands); - bool ParseOperand(SmallVectorImpl<MCParsedAsmOperand *> &, - StringRef Mnemonic); + bool searchSymbolAlias(OperandVector &Operands); + + bool ParseOperand(OperandVector &, StringRef Mnemonic); bool needsExpansion(MCInst &Inst); - void expandInstruction(MCInst &Inst, SMLoc IDLoc, + // Expands assembly pseudo instructions. + // Returns false on success, true otherwise. + bool expandInstruction(MCInst &Inst, SMLoc IDLoc, SmallVectorImpl<MCInst> &Instructions); - void expandLoadImm(MCInst &Inst, SMLoc IDLoc, + + bool expandLoadImm(MCInst &Inst, SMLoc IDLoc, SmallVectorImpl<MCInst> &Instructions); - void expandLoadAddressImm(MCInst &Inst, SMLoc IDLoc, + + bool expandLoadAddressImm(MCInst &Inst, SMLoc IDLoc, SmallVectorImpl<MCInst> &Instructions); - void expandLoadAddressReg(MCInst &Inst, SMLoc IDLoc, + + bool expandLoadAddressReg(MCInst &Inst, SMLoc IDLoc, SmallVectorImpl<MCInst> &Instructions); + void expandMemInst(MCInst &Inst, SMLoc IDLoc, SmallVectorImpl<MCInst> &Instructions, bool isLoad, bool isImmOpnd); - bool reportParseError(StringRef ErrorMsg); - bool reportParseError(SMLoc Loc, StringRef ErrorMsg); + bool reportParseError(Twine ErrorMsg); + bool reportParseError(SMLoc Loc, Twine ErrorMsg); bool parseMemOffset(const MCExpr *&Res, bool isParenExpr); bool parseRelocOperand(const MCExpr *&Res); @@ -159,32 +156,20 @@ class MipsAsmParser : public MCTargetAsmParser { bool parseSetReorderDirective(); bool parseSetNoReorderDirective(); bool parseSetNoMips16Directive(); + bool parseSetFpDirective(); bool parseSetAssignment(); bool parseDataDirective(unsigned Size, SMLoc L); bool parseDirectiveGpWord(); bool parseDirectiveGpDWord(); + bool parseDirectiveModule(); + bool parseDirectiveModuleFP(); + bool parseFpABIValue(MipsABIFlagsSection::FpABIKind &FpABI, + StringRef Directive); MCSymbolRefExpr::VariantKind getVariantKind(StringRef Symbol); - bool isGP64() const { - return (STI.getFeatureBits() & Mips::FeatureGP64Bit) != 0; - } - - bool isFP64() const { - return (STI.getFeatureBits() & Mips::FeatureFP64Bit) != 0; - } - - bool isN32() const { return STI.getFeatureBits() & Mips::FeatureN32; } - bool isN64() const { return STI.getFeatureBits() & Mips::FeatureN64; } - - bool isMicroMips() const { - return STI.getFeatureBits() & Mips::FeatureMicroMips; - } - - bool parseRegister(unsigned &RegNum); - bool eatComma(StringRef ErrorStr); int matchCPURegisterName(StringRef Symbol); @@ -205,7 +190,7 @@ class MipsAsmParser : public MCTargetAsmParser { unsigned getGPR(int RegNo); - int getATReg(); + int getATReg(SMLoc Loc); bool processInstruction(MCInst &Inst, SMLoc IDLoc, SmallVectorImpl<MCInst> &Instructions); @@ -230,23 +215,85 @@ class MipsAsmParser : public MCTargetAsmParser { } public: + enum MipsMatchResultTy { + Match_RequiresDifferentSrcAndDst = FIRST_TARGET_MATCH_RESULT_TY +#define GET_OPERAND_DIAGNOSTIC_TYPES +#include "MipsGenAsmMatcher.inc" +#undef GET_OPERAND_DIAGNOSTIC_TYPES + + }; + MipsAsmParser(MCSubtargetInfo &sti, MCAsmParser &parser, - const MCInstrInfo &MII, - const MCTargetOptions &Options) + const MCInstrInfo &MII, const MCTargetOptions &Options) : MCTargetAsmParser(), STI(sti), Parser(parser) { // Initialize the set of available features. setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits())); + getTargetStreamer().updateABIInfo(*this); + // Assert exactly one ABI was chosen. assert((((STI.getFeatureBits() & Mips::FeatureO32) != 0) + ((STI.getFeatureBits() & Mips::FeatureEABI) != 0) + ((STI.getFeatureBits() & Mips::FeatureN32) != 0) + ((STI.getFeatureBits() & Mips::FeatureN64) != 0)) == 1); + + if (!isABI_O32() && !allowOddSPReg() != 0) + report_fatal_error("-mno-odd-spreg requires the O32 ABI"); } MCAsmParser &getParser() const { return Parser; } MCAsmLexer &getLexer() const { return Parser.getLexer(); } + /// True if all of $fcc0 - $fcc7 exist for the current ISA. + bool hasEightFccRegisters() const { return hasMips4() || hasMips32(); } + + bool isGP64bit() const { return STI.getFeatureBits() & Mips::FeatureGP64Bit; } + bool isFP64bit() const { return STI.getFeatureBits() & Mips::FeatureFP64Bit; } + bool isABI_N32() const { return STI.getFeatureBits() & Mips::FeatureN32; } + bool isABI_N64() const { return STI.getFeatureBits() & Mips::FeatureN64; } + bool isABI_O32() const { return STI.getFeatureBits() & Mips::FeatureO32; } + bool isABI_FPXX() const { return false; } // TODO: add check for FeatureXX + + bool allowOddSPReg() const { + return !(STI.getFeatureBits() & Mips::FeatureNoOddSPReg); + } + + bool inMicroMipsMode() const { + return STI.getFeatureBits() & Mips::FeatureMicroMips; + } + bool hasMips1() const { return STI.getFeatureBits() & Mips::FeatureMips1; } + bool hasMips2() const { return STI.getFeatureBits() & Mips::FeatureMips2; } + bool hasMips3() const { return STI.getFeatureBits() & Mips::FeatureMips3; } + bool hasMips4() const { return STI.getFeatureBits() & Mips::FeatureMips4; } + bool hasMips5() const { return STI.getFeatureBits() & Mips::FeatureMips5; } + bool hasMips32() const { + return (STI.getFeatureBits() & Mips::FeatureMips32); + } + bool hasMips64() const { + return (STI.getFeatureBits() & Mips::FeatureMips64); + } + bool hasMips32r2() const { + return (STI.getFeatureBits() & Mips::FeatureMips32r2); + } + bool hasMips64r2() const { + return (STI.getFeatureBits() & Mips::FeatureMips64r2); + } + bool hasMips32r6() const { + return (STI.getFeatureBits() & Mips::FeatureMips32r6); + } + bool hasMips64r6() const { + return (STI.getFeatureBits() & Mips::FeatureMips64r6); + } + bool hasDSP() const { return (STI.getFeatureBits() & Mips::FeatureDSP); } + bool hasDSPR2() const { return (STI.getFeatureBits() & Mips::FeatureDSPR2); } + bool hasMSA() const { return (STI.getFeatureBits() & Mips::FeatureMSA); } + + bool inMips16Mode() const { + return STI.getFeatureBits() & Mips::FeatureMips16; + } + // TODO: see how can we get this info. + bool mipsSEUsesSoftFloat() const { return false; } + /// Warn if RegNo is the current assembler temporary. void WarnIfAssemblerTemporary(int RegNo, SMLoc Loc); }; @@ -261,9 +308,9 @@ public: /// Broad categories of register classes /// The exact class is finalized by the render method. enum RegKind { - RegKind_GPR = 1, /// GPR32 and GPR64 (depending on isGP64()) + RegKind_GPR = 1, /// GPR32 and GPR64 (depending on isGP64bit()) RegKind_FGR = 2, /// FGR32, FGR64, AFGR64 (depending on context and - /// isFP64()) + /// isFP64bit()) RegKind_FCC = 4, /// FCC RegKind_MSA128 = 8, /// MSA128[BHWD] (makes no difference which) RegKind_MSACtrl = 16, /// MSA control registers @@ -289,9 +336,11 @@ private: k_Token /// A simple token } Kind; +public: MipsOperand(KindTy K, MipsAsmParser &Parser) : MCParsedAsmOperand(), Kind(K), AsmParser(Parser) {} +private: /// For diagnostics, and checking the assembler temporary MipsAsmParser &AsmParser; @@ -330,10 +379,11 @@ private: SMLoc StartLoc, EndLoc; /// Internal constructor for register kinds - static MipsOperand *CreateReg(unsigned Index, RegKind RegKind, - const MCRegisterInfo *RegInfo, SMLoc S, SMLoc E, - MipsAsmParser &Parser) { - MipsOperand *Op = new MipsOperand(k_RegisterIndex, Parser); + static std::unique_ptr<MipsOperand> CreateReg(unsigned Index, RegKind RegKind, + const MCRegisterInfo *RegInfo, + SMLoc S, SMLoc E, + MipsAsmParser &Parser) { + auto Op = make_unique<MipsOperand>(k_RegisterIndex, Parser); Op->RegIdx.Index = Index; Op->RegIdx.RegInfo = RegInfo; Op->RegIdx.Kind = RegKind; @@ -521,6 +571,10 @@ public: void addFGR32AsmRegOperands(MCInst &Inst, unsigned N) const { assert(N == 1 && "Invalid number of operands!"); Inst.addOperand(MCOperand::CreateReg(getFGR32Reg())); + // FIXME: We ought to do this for -integrated-as without -via-file-asm too. + if (!AsmParser.allowOddSPReg() && RegIdx.Index & 1) + AsmParser.Error(StartLoc, "-mno-odd-spreg prohibits the use of odd FPU " + "registers"); } void addFGRH32AsmRegOperands(MCInst &Inst, unsigned N) const { @@ -612,6 +666,12 @@ public: return Kind == k_Token; } bool isMem() const override { return Kind == k_Memory; } + bool isConstantMemOff() const { + return isMem() && dyn_cast<MCConstantExpr>(getMemOff()); + } + template <unsigned Bits> bool isMemWithSimmOffset() const { + return isMem() && isConstantMemOff() && isInt<Bits>(getConstantMemOff()); + } bool isInvNum() const { return Kind == k_Immediate; } bool isLSAImm() const { if (!isConstantImm()) @@ -656,9 +716,13 @@ public: return Mem.Off; } - static MipsOperand *CreateToken(StringRef Str, SMLoc S, - MipsAsmParser &Parser) { - MipsOperand *Op = new MipsOperand(k_Token, Parser); + int64_t getConstantMemOff() const { + return static_cast<const MCConstantExpr *>(getMemOff())->getValue(); + } + + static std::unique_ptr<MipsOperand> CreateToken(StringRef Str, SMLoc S, + MipsAsmParser &Parser) { + auto Op = make_unique<MipsOperand>(k_Token, Parser); Op->Tok.Data = Str.data(); Op->Tok.Length = Str.size(); Op->StartLoc = S; @@ -668,74 +732,75 @@ public: /// Create a numeric register (e.g. $1). The exact register remains /// unresolved until an instruction successfully matches - static MipsOperand *CreateNumericReg(unsigned Index, - const MCRegisterInfo *RegInfo, SMLoc S, - SMLoc E, MipsAsmParser &Parser) { + static std::unique_ptr<MipsOperand> + CreateNumericReg(unsigned Index, const MCRegisterInfo *RegInfo, SMLoc S, + SMLoc E, MipsAsmParser &Parser) { DEBUG(dbgs() << "CreateNumericReg(" << Index << ", ...)\n"); return CreateReg(Index, RegKind_Numeric, RegInfo, S, E, Parser); } /// Create a register that is definitely a GPR. /// This is typically only used for named registers such as $gp. - static MipsOperand *CreateGPRReg(unsigned Index, - const MCRegisterInfo *RegInfo, SMLoc S, - SMLoc E, MipsAsmParser &Parser) { + static std::unique_ptr<MipsOperand> + CreateGPRReg(unsigned Index, const MCRegisterInfo *RegInfo, SMLoc S, SMLoc E, + MipsAsmParser &Parser) { return CreateReg(Index, RegKind_GPR, RegInfo, S, E, Parser); } /// Create a register that is definitely a FGR. /// This is typically only used for named registers such as $f0. - static MipsOperand *CreateFGRReg(unsigned Index, - const MCRegisterInfo *RegInfo, SMLoc S, - SMLoc E, MipsAsmParser &Parser) { + static std::unique_ptr<MipsOperand> + CreateFGRReg(unsigned Index, const MCRegisterInfo *RegInfo, SMLoc S, SMLoc E, + MipsAsmParser &Parser) { return CreateReg(Index, RegKind_FGR, RegInfo, S, E, Parser); } /// Create a register that is definitely an FCC. /// This is typically only used for named registers such as $fcc0. - static MipsOperand *CreateFCCReg(unsigned Index, - const MCRegisterInfo *RegInfo, SMLoc S, - SMLoc E, MipsAsmParser &Parser) { + static std::unique_ptr<MipsOperand> + CreateFCCReg(unsigned Index, const MCRegisterInfo *RegInfo, SMLoc S, SMLoc E, + MipsAsmParser &Parser) { return CreateReg(Index, RegKind_FCC, RegInfo, S, E, Parser); } /// Create a register that is definitely an ACC. /// This is typically only used for named registers such as $ac0. - static MipsOperand *CreateACCReg(unsigned Index, - const MCRegisterInfo *RegInfo, SMLoc S, - SMLoc E, MipsAsmParser &Parser) { + static std::unique_ptr<MipsOperand> + CreateACCReg(unsigned Index, const MCRegisterInfo *RegInfo, SMLoc S, SMLoc E, + MipsAsmParser &Parser) { return CreateReg(Index, RegKind_ACC, RegInfo, S, E, Parser); } /// Create a register that is definitely an MSA128. /// This is typically only used for named registers such as $w0. - static MipsOperand *CreateMSA128Reg(unsigned Index, - const MCRegisterInfo *RegInfo, SMLoc S, - SMLoc E, MipsAsmParser &Parser) { + static std::unique_ptr<MipsOperand> + CreateMSA128Reg(unsigned Index, const MCRegisterInfo *RegInfo, SMLoc S, + SMLoc E, MipsAsmParser &Parser) { return CreateReg(Index, RegKind_MSA128, RegInfo, S, E, Parser); } /// Create a register that is definitely an MSACtrl. /// This is typically only used for named registers such as $msaaccess. - static MipsOperand *CreateMSACtrlReg(unsigned Index, - const MCRegisterInfo *RegInfo, SMLoc S, - SMLoc E, MipsAsmParser &Parser) { + static std::unique_ptr<MipsOperand> + CreateMSACtrlReg(unsigned Index, const MCRegisterInfo *RegInfo, SMLoc S, + SMLoc E, MipsAsmParser &Parser) { return CreateReg(Index, RegKind_MSACtrl, RegInfo, S, E, Parser); } - static MipsOperand *CreateImm(const MCExpr *Val, SMLoc S, SMLoc E, - MipsAsmParser &Parser) { - MipsOperand *Op = new MipsOperand(k_Immediate, Parser); + static std::unique_ptr<MipsOperand> + CreateImm(const MCExpr *Val, SMLoc S, SMLoc E, MipsAsmParser &Parser) { + auto Op = make_unique<MipsOperand>(k_Immediate, Parser); Op->Imm.Val = Val; Op->StartLoc = S; Op->EndLoc = E; return Op; } - static MipsOperand *CreateMem(MipsOperand *Base, const MCExpr *Off, SMLoc S, - SMLoc E, MipsAsmParser &Parser) { - MipsOperand *Op = new MipsOperand(k_Memory, Parser); - Op->Mem.Base = Base; + static std::unique_ptr<MipsOperand> + CreateMem(std::unique_ptr<MipsOperand> Base, const MCExpr *Off, SMLoc S, + SMLoc E, MipsAsmParser &Parser) { + auto Op = make_unique<MipsOperand>(k_Memory, Parser); + Op->Mem.Base = Base.release(); Op->Mem.Off = Off; Op->StartLoc = S; Op->EndLoc = E; @@ -756,7 +821,11 @@ public: return isRegIdx() && RegIdx.Kind & RegKind_CCR && RegIdx.Index <= 31; } bool isFCCAsmReg() const { - return isRegIdx() && RegIdx.Kind & RegKind_FCC && RegIdx.Index <= 7; + if (!(isRegIdx() && RegIdx.Kind & RegKind_FCC)) + return false; + if (!AsmParser.hasEightFccRegisters()) + return RegIdx.Index == 0; + return RegIdx.Index <= 7; } bool isACCAsmReg() const { return isRegIdx() && RegIdx.Kind & RegKind_ACC && RegIdx.Index <= 3; @@ -849,9 +918,10 @@ bool MipsAsmParser::processInstruction(MCInst &Inst, SMLoc IDLoc, Offset = Inst.getOperand(2); if (!Offset.isImm()) break; // We'll deal with this situation later on when applying fixups. - if (!isIntN(isMicroMips() ? 17 : 18, Offset.getImm())) + if (!isIntN(inMicroMipsMode() ? 17 : 18, Offset.getImm())) return Error(IDLoc, "branch target out of range"); - if (OffsetToAlignment(Offset.getImm(), 1LL << (isMicroMips() ? 1 : 2))) + if (OffsetToAlignment(Offset.getImm(), + 1LL << (inMicroMipsMode() ? 1 : 2))) return Error(IDLoc, "branch to misaligned address"); break; case Mips::BGEZ: @@ -874,14 +944,23 @@ bool MipsAsmParser::processInstruction(MCInst &Inst, SMLoc IDLoc, Offset = Inst.getOperand(1); if (!Offset.isImm()) break; // We'll deal with this situation later on when applying fixups. - if (!isIntN(isMicroMips() ? 17 : 18, Offset.getImm())) + if (!isIntN(inMicroMipsMode() ? 17 : 18, Offset.getImm())) return Error(IDLoc, "branch target out of range"); - if (OffsetToAlignment(Offset.getImm(), 1LL << (isMicroMips() ? 1 : 2))) + if (OffsetToAlignment(Offset.getImm(), + 1LL << (inMicroMipsMode() ? 1 : 2))) return Error(IDLoc, "branch to misaligned address"); break; } } + // SSNOP is deprecated on MIPS32r6/MIPS64r6 + // We still accept it but it is a normal nop. + if (hasMips32r6() && Inst.getOpcode() == Mips::SSNOP) { + std::string ISA = hasMips64r6() ? "MIPS64r6" : "MIPS32r6"; + Warning(IDLoc, "ssnop is deprecated for " + ISA + " and is equivalent to a " + "nop instruction"); + } + if (MCID.hasDelaySlot() && Options.isReorder()) { // If this instruction has a delay slot and .set reorder is active, // emit a NOP after it. @@ -930,7 +1009,7 @@ bool MipsAsmParser::processInstruction(MCInst &Inst, SMLoc IDLoc, } // if load/store if (needsExpansion(Inst)) - expandInstruction(Inst, IDLoc, Instructions); + return expandInstruction(Inst, IDLoc, Instructions); else Instructions.push_back(Inst); @@ -943,17 +1022,27 @@ bool MipsAsmParser::needsExpansion(MCInst &Inst) { case Mips::LoadImm32Reg: case Mips::LoadAddr32Imm: case Mips::LoadAddr32Reg: + case Mips::LoadImm64Reg: return true; default: return false; } } -void MipsAsmParser::expandInstruction(MCInst &Inst, SMLoc IDLoc, +bool MipsAsmParser::expandInstruction(MCInst &Inst, SMLoc IDLoc, SmallVectorImpl<MCInst> &Instructions) { switch (Inst.getOpcode()) { + default: + assert(0 && "unimplemented expansion"); + return true; case Mips::LoadImm32Reg: return expandLoadImm(Inst, IDLoc, Instructions); + case Mips::LoadImm64Reg: + if (!isGP64bit()) { + Error(IDLoc, "instruction requires a CPU feature not currently enabled"); + return true; + } + return expandLoadImm(Inst, IDLoc, Instructions); case Mips::LoadAddr32Imm: return expandLoadAddressImm(Inst, IDLoc, Instructions); case Mips::LoadAddr32Reg: @@ -961,7 +1050,31 @@ void MipsAsmParser::expandInstruction(MCInst &Inst, SMLoc IDLoc, } } -void MipsAsmParser::expandLoadImm(MCInst &Inst, SMLoc IDLoc, +namespace { +template <int Shift, bool PerformShift> +void createShiftOr(int64_t Value, unsigned RegNo, SMLoc IDLoc, + SmallVectorImpl<MCInst> &Instructions) { + MCInst tmpInst; + if (PerformShift) { + tmpInst.setOpcode(Mips::DSLL); + tmpInst.addOperand(MCOperand::CreateReg(RegNo)); + tmpInst.addOperand(MCOperand::CreateReg(RegNo)); + tmpInst.addOperand(MCOperand::CreateImm(16)); + tmpInst.setLoc(IDLoc); + Instructions.push_back(tmpInst); + tmpInst.clear(); + } + tmpInst.setOpcode(Mips::ORi); + tmpInst.addOperand(MCOperand::CreateReg(RegNo)); + tmpInst.addOperand(MCOperand::CreateReg(RegNo)); + tmpInst.addOperand( + MCOperand::CreateImm(((Value & (0xffffLL << Shift)) >> Shift))); + tmpInst.setLoc(IDLoc); + Instructions.push_back(tmpInst); +} +} + +bool MipsAsmParser::expandLoadImm(MCInst &Inst, SMLoc IDLoc, SmallVectorImpl<MCInst> &Instructions) { MCInst tmpInst; const MCOperand &ImmOp = Inst.getOperand(1); @@ -969,8 +1082,10 @@ void MipsAsmParser::expandLoadImm(MCInst &Inst, SMLoc IDLoc, const MCOperand &RegOp = Inst.getOperand(0); assert(RegOp.isReg() && "expected register operand kind"); - int ImmValue = ImmOp.getImm(); + int64_t ImmValue = ImmOp.getImm(); tmpInst.setLoc(IDLoc); + // FIXME: gas has a special case for values that are 000...1111, which + // becomes a li -1 and then a dsrl if (0 <= ImmValue && ImmValue <= 65535) { // For 0 <= j <= 65535. // li d,j => ori d,$zero,j @@ -987,25 +1102,76 @@ void MipsAsmParser::expandLoadImm(MCInst &Inst, SMLoc IDLoc, tmpInst.addOperand(MCOperand::CreateReg(Mips::ZERO)); tmpInst.addOperand(MCOperand::CreateImm(ImmValue)); Instructions.push_back(tmpInst); - } else { - // For any other value of j that is representable as a 32-bit integer. + } else if ((ImmValue & 0xffffffff) == ImmValue) { + // For any value of j that is representable as a 32-bit integer, create + // a sequence of: // li d,j => lui d,hi16(j) // ori d,d,lo16(j) tmpInst.setOpcode(Mips::LUi); tmpInst.addOperand(MCOperand::CreateReg(RegOp.getReg())); tmpInst.addOperand(MCOperand::CreateImm((ImmValue & 0xffff0000) >> 16)); Instructions.push_back(tmpInst); - tmpInst.clear(); - tmpInst.setOpcode(Mips::ORi); + createShiftOr<0, false>(ImmValue, RegOp.getReg(), IDLoc, Instructions); + } else if ((ImmValue & (0xffffLL << 48)) == 0) { + if (!isGP64bit()) { + Error(IDLoc, "instruction requires a CPU feature not currently enabled"); + return true; + } + + // <------- lo32 ------> + // <------- hi32 ------> + // <- hi16 -> <- lo16 -> + // _________________________________ + // | | | | + // | 16-bytes | 16-bytes | 16-bytes | + // |__________|__________|__________| + // + // For any value of j that is representable as a 48-bit integer, create + // a sequence of: + // li d,j => lui d,hi16(j) + // ori d,d,hi16(lo32(j)) + // dsll d,d,16 + // ori d,d,lo16(lo32(j)) + tmpInst.setOpcode(Mips::LUi); tmpInst.addOperand(MCOperand::CreateReg(RegOp.getReg())); + tmpInst.addOperand( + MCOperand::CreateImm((ImmValue & (0xffffLL << 32)) >> 32)); + Instructions.push_back(tmpInst); + createShiftOr<16, false>(ImmValue, RegOp.getReg(), IDLoc, Instructions); + createShiftOr<0, true>(ImmValue, RegOp.getReg(), IDLoc, Instructions); + } else { + if (!isGP64bit()) { + Error(IDLoc, "instruction requires a CPU feature not currently enabled"); + return true; + } + + // <------- hi32 ------> <------- lo32 ------> + // <- hi16 -> <- lo16 -> + // ___________________________________________ + // | | | | | + // | 16-bytes | 16-bytes | 16-bytes | 16-bytes | + // |__________|__________|__________|__________| + // + // For any value of j that isn't representable as a 48-bit integer. + // li d,j => lui d,hi16(j) + // ori d,d,lo16(hi32(j)) + // dsll d,d,16 + // ori d,d,hi16(lo32(j)) + // dsll d,d,16 + // ori d,d,lo16(lo32(j)) + tmpInst.setOpcode(Mips::LUi); tmpInst.addOperand(MCOperand::CreateReg(RegOp.getReg())); - tmpInst.addOperand(MCOperand::CreateImm(ImmValue & 0xffff)); - tmpInst.setLoc(IDLoc); + tmpInst.addOperand( + MCOperand::CreateImm((ImmValue & (0xffffLL << 48)) >> 48)); Instructions.push_back(tmpInst); + createShiftOr<32, false>(ImmValue, RegOp.getReg(), IDLoc, Instructions); + createShiftOr<16, true>(ImmValue, RegOp.getReg(), IDLoc, Instructions); + createShiftOr<0, true>(ImmValue, RegOp.getReg(), IDLoc, Instructions); } + return false; } -void +bool MipsAsmParser::expandLoadAddressReg(MCInst &Inst, SMLoc IDLoc, SmallVectorImpl<MCInst> &Instructions) { MCInst tmpInst; @@ -1046,9 +1212,10 @@ MipsAsmParser::expandLoadAddressReg(MCInst &Inst, SMLoc IDLoc, tmpInst.addOperand(MCOperand::CreateReg(SrcRegOp.getReg())); Instructions.push_back(tmpInst); } + return false; } -void +bool MipsAsmParser::expandLoadAddressImm(MCInst &Inst, SMLoc IDLoc, SmallVectorImpl<MCInst> &Instructions) { MCInst tmpInst; @@ -1080,6 +1247,7 @@ MipsAsmParser::expandLoadAddressImm(MCInst &Inst, SMLoc IDLoc, tmpInst.addOperand(MCOperand::CreateImm(ImmValue & 0xffff)); Instructions.push_back(tmpInst); } + return false; } void MipsAsmParser::expandMemInst(MCInst &Inst, SMLoc IDLoc, @@ -1090,8 +1258,6 @@ void MipsAsmParser::expandMemInst(MCInst &Inst, SMLoc IDLoc, unsigned ImmOffset, HiOffset, LoOffset; const MCExpr *ExprOffset; unsigned TmpRegNum; - unsigned AtRegNum = getReg( - (isGP64()) ? Mips::GPR64RegClassID : Mips::GPR32RegClassID, getATReg()); // 1st operand is either the source or destination register. assert(Inst.getOperand(0).isReg() && "expected register operand kind"); unsigned RegOpNum = Inst.getOperand(0).getReg(); @@ -1111,10 +1277,46 @@ void MipsAsmParser::expandMemInst(MCInst &Inst, SMLoc IDLoc, ExprOffset = Inst.getOperand(2).getExpr(); // All instructions will have the same location. TempInst.setLoc(IDLoc); - // 1st instruction in expansion is LUi. For load instruction we can use - // the dst register as a temporary if base and dst are different, - // but for stores we must use $at. - TmpRegNum = (isLoad && (BaseRegNum != RegOpNum)) ? RegOpNum : AtRegNum; + // These are some of the types of expansions we perform here: + // 1) lw $8, sym => lui $8, %hi(sym) + // lw $8, %lo(sym)($8) + // 2) lw $8, offset($9) => lui $8, %hi(offset) + // add $8, $8, $9 + // lw $8, %lo(offset)($9) + // 3) lw $8, offset($8) => lui $at, %hi(offset) + // add $at, $at, $8 + // lw $8, %lo(offset)($at) + // 4) sw $8, sym => lui $at, %hi(sym) + // sw $8, %lo(sym)($at) + // 5) sw $8, offset($8) => lui $at, %hi(offset) + // add $at, $at, $8 + // sw $8, %lo(offset)($at) + // 6) ldc1 $f0, sym => lui $at, %hi(sym) + // ldc1 $f0, %lo(sym)($at) + // + // For load instructions we can use the destination register as a temporary + // if base and dst are different (examples 1 and 2) and if the base register + // is general purpose otherwise we must use $at (example 6) and error if it's + // not available. For stores we must use $at (examples 4 and 5) because we + // must not clobber the source register setting up the offset. + const MCInstrDesc &Desc = getInstDesc(Inst.getOpcode()); + int16_t RegClassOp0 = Desc.OpInfo[0].RegClass; + unsigned RegClassIDOp0 = + getContext().getRegisterInfo()->getRegClass(RegClassOp0).getID(); + bool IsGPR = (RegClassIDOp0 == Mips::GPR32RegClassID) || + (RegClassIDOp0 == Mips::GPR64RegClassID); + if (isLoad && IsGPR && (BaseRegNum != RegOpNum)) + TmpRegNum = RegOpNum; + else { + int AT = getATReg(IDLoc); + // At this point we need AT to perform the expansions and we exit if it is + // not available. + if (!AT) + return; + TmpRegNum = getReg( + (isGP64bit()) ? Mips::GPR64RegClassID : Mips::GPR32RegClassID, AT); + } + TempInst.setOpcode(Mips::LUi); TempInst.addOperand(MCOperand::CreateReg(TmpRegNum)); if (isImmOpnd) @@ -1164,10 +1366,24 @@ void MipsAsmParser::expandMemInst(MCInst &Inst, SMLoc IDLoc, TempInst.clear(); } -bool MipsAsmParser::MatchAndEmitInstruction( - SMLoc IDLoc, unsigned &Opcode, - SmallVectorImpl<MCParsedAsmOperand *> &Operands, MCStreamer &Out, - unsigned &ErrorInfo, bool MatchingInlineAsm) { +unsigned MipsAsmParser::checkTargetMatchPredicate(MCInst &Inst) { + // As described by the Mips32r2 spec, the registers Rd and Rs for + // jalr.hb must be different. + unsigned Opcode = Inst.getOpcode(); + + if (Opcode == Mips::JALR_HB && + (Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg())) + return Match_RequiresDifferentSrcAndDst; + + return Match_Success; +} + +bool MipsAsmParser::MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode, + OperandVector &Operands, + MCStreamer &Out, + unsigned &ErrorInfo, + bool MatchingInlineAsm) { + MCInst Inst; SmallVector<MCInst, 8> Instructions; unsigned MatchResult = @@ -1192,7 +1408,7 @@ bool MipsAsmParser::MatchAndEmitInstruction( if (ErrorInfo >= Operands.size()) return Error(IDLoc, "too few operands for instruction"); - ErrorLoc = ((MipsOperand *)Operands[ErrorInfo])->getStartLoc(); + ErrorLoc = ((MipsOperand &)*Operands[ErrorInfo]).getStartLoc(); if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc; } @@ -1201,6 +1417,8 @@ bool MipsAsmParser::MatchAndEmitInstruction( } case Match_MnemonicFail: return Error(IDLoc, "invalid instruction"); + case Match_RequiresDifferentSrcAndDst: + return Error(IDLoc, "source and destination must be different"); } return true; } @@ -1254,7 +1472,7 @@ int MipsAsmParser::matchCPURegisterName(StringRef Name) { .Case("t9", 25) .Default(-1); - if (isN32() || isN64()) { + if (isABI_N32() || isABI_N64()) { // Although SGI documentation just cuts out t0-t3 for n32/n64, // GNU pushes the values of t0-t3 to override the o32/o64 values for t4-t7 // We are supporting both cases, so for t0-t3 we'll just push them to t4-t7. @@ -1354,10 +1572,11 @@ bool MipsAssemblerOptions::setATReg(unsigned Reg) { return true; } -int MipsAsmParser::getATReg() { +int MipsAsmParser::getATReg(SMLoc Loc) { int AT = Options.getATRegNum(); if (AT == 0) - TokError("Pseudo instruction requires $at, which is not available"); + reportParseError(Loc, + "Pseudo instruction requires $at, which is not available"); return AT; } @@ -1366,7 +1585,7 @@ unsigned MipsAsmParser::getReg(int RC, int RegNo) { } unsigned MipsAsmParser::getGPR(int RegNo) { - return getReg(isGP64() ? Mips::GPR64RegClassID : Mips::GPR32RegClassID, + return getReg(isGP64bit() ? Mips::GPR64RegClassID : Mips::GPR32RegClassID, RegNo); } @@ -1378,9 +1597,7 @@ int MipsAsmParser::matchRegisterByNumber(unsigned RegNum, unsigned RegClass) { return getReg(RegClass, RegNum); } -bool -MipsAsmParser::ParseOperand(SmallVectorImpl<MCParsedAsmOperand *> &Operands, - StringRef Mnemonic) { +bool MipsAsmParser::ParseOperand(OperandVector &Operands, StringRef Mnemonic) { DEBUG(dbgs() << "ParseOperand\n"); // Check if the current operand has a custom associated parser, if so, try to @@ -1431,6 +1648,7 @@ MipsAsmParser::ParseOperand(SmallVectorImpl<MCParsedAsmOperand *> &Operands, case AsmToken::Minus: case AsmToken::Plus: case AsmToken::Integer: + case AsmToken::Tilde: case AsmToken::String: { DEBUG(dbgs() << ".. generic integer\n"); OperandMatchResultTy ResTy = ParseImm(Operands); @@ -1578,11 +1796,11 @@ bool MipsAsmParser::parseRelocOperand(const MCExpr *&Res) { bool MipsAsmParser::ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc) { - SmallVector<MCParsedAsmOperand *, 1> Operands; + SmallVector<std::unique_ptr<MCParsedAsmOperand>, 1> Operands; OperandMatchResultTy ResTy = ParseAnyRegister(Operands); if (ResTy == MatchOperand_Success) { assert(Operands.size() == 1); - MipsOperand &Operand = *static_cast<MipsOperand *>(Operands.front()); + MipsOperand &Operand = static_cast<MipsOperand &>(*Operands.front()); StartLoc = Operand.getStartLoc(); EndLoc = Operand.getEndLoc(); @@ -1592,11 +1810,9 @@ bool MipsAsmParser::ParseRegister(unsigned &RegNo, SMLoc &StartLoc, // register is a parse error. if (Operand.isGPRAsmReg()) { // Resolve to GPR32 or GPR64 appropriately. - RegNo = isGP64() ? Operand.getGPR64Reg() : Operand.getGPR32Reg(); + RegNo = isGP64bit() ? Operand.getGPR64Reg() : Operand.getGPR32Reg(); } - delete &Operand; - return (RegNo == (unsigned)-1); } @@ -1632,8 +1848,8 @@ bool MipsAsmParser::parseMemOffset(const MCExpr *&Res, bool isParenExpr) { return Result; } -MipsAsmParser::OperandMatchResultTy MipsAsmParser::parseMemOperand( - SmallVectorImpl<MCParsedAsmOperand *> &Operands) { +MipsAsmParser::OperandMatchResultTy +MipsAsmParser::parseMemOperand(OperandVector &Operands) { DEBUG(dbgs() << "parseMemOperand\n"); const MCExpr *IdVal = nullptr; SMLoc S; @@ -1653,8 +1869,8 @@ MipsAsmParser::OperandMatchResultTy MipsAsmParser::parseMemOperand( const AsmToken &Tok = Parser.getTok(); // Get the next token. if (Tok.isNot(AsmToken::LParen)) { - MipsOperand *Mnemonic = static_cast<MipsOperand *>(Operands[0]); - if (Mnemonic->getToken() == "la") { + MipsOperand &Mnemonic = static_cast<MipsOperand &>(*Operands[0]); + if (Mnemonic.getToken() == "la") { SMLoc E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1); Operands.push_back(MipsOperand::CreateImm(IdVal, S, E, *this)); @@ -1666,9 +1882,10 @@ MipsAsmParser::OperandMatchResultTy MipsAsmParser::parseMemOperand( // Zero register assumed, add a memory operand with ZERO as its base. // "Base" will be managed by k_Memory. - MipsOperand *Base = MipsOperand::CreateGPRReg( - 0, getContext().getRegisterInfo(), S, E, *this); - Operands.push_back(MipsOperand::CreateMem(Base, IdVal, S, E, *this)); + auto Base = MipsOperand::CreateGPRReg(0, getContext().getRegisterInfo(), + S, E, *this); + Operands.push_back( + MipsOperand::CreateMem(std::move(Base), IdVal, S, E, *this)); return MatchOperand_Success; } Error(Parser.getTok().getLoc(), "'(' expected"); @@ -1695,7 +1912,8 @@ MipsAsmParser::OperandMatchResultTy MipsAsmParser::parseMemOperand( IdVal = MCConstantExpr::Create(0, getContext()); // Replace the register operand with the memory operand. - MipsOperand *op = static_cast<MipsOperand *>(Operands.back()); + std::unique_ptr<MipsOperand> op( + static_cast<MipsOperand *>(Operands.back().release())); // Remove the register from the operands. // "op" will be managed by k_Memory. Operands.pop_back(); @@ -1709,12 +1927,11 @@ MipsAsmParser::OperandMatchResultTy MipsAsmParser::parseMemOperand( getContext()); } - Operands.push_back(MipsOperand::CreateMem(op, IdVal, S, E, *this)); + Operands.push_back(MipsOperand::CreateMem(std::move(op), IdVal, S, E, *this)); return MatchOperand_Success; } -bool MipsAsmParser::searchSymbolAlias( - SmallVectorImpl<MCParsedAsmOperand *> &Operands) { +bool MipsAsmParser::searchSymbolAlias(OperandVector &Operands) { MCSymbol *Sym = getContext().LookupSymbol(Parser.getTok().getIdentifier()); if (Sym) { @@ -1740,9 +1957,8 @@ bool MipsAsmParser::searchSymbolAlias( } else if (Expr->getKind() == MCExpr::Constant) { Parser.Lex(); const MCConstantExpr *Const = static_cast<const MCConstantExpr *>(Expr); - MipsOperand *op = - MipsOperand::CreateImm(Const, S, Parser.getTok().getLoc(), *this); - Operands.push_back(op); + Operands.push_back( + MipsOperand::CreateImm(Const, S, Parser.getTok().getLoc(), *this)); return true; } } @@ -1750,9 +1966,9 @@ bool MipsAsmParser::searchSymbolAlias( } MipsAsmParser::OperandMatchResultTy -MipsAsmParser::MatchAnyRegisterNameWithoutDollar( - SmallVectorImpl<MCParsedAsmOperand *> &Operands, StringRef Identifier, - SMLoc S) { +MipsAsmParser::MatchAnyRegisterNameWithoutDollar(OperandVector &Operands, + StringRef Identifier, + SMLoc S) { int Index = matchCPURegisterName(Identifier); if (Index != -1) { Operands.push_back(MipsOperand::CreateGPRReg( @@ -1799,8 +2015,7 @@ MipsAsmParser::MatchAnyRegisterNameWithoutDollar( } MipsAsmParser::OperandMatchResultTy -MipsAsmParser::MatchAnyRegisterWithoutDollar( - SmallVectorImpl<MCParsedAsmOperand *> &Operands, SMLoc S) { +MipsAsmParser::MatchAnyRegisterWithoutDollar(OperandVector &Operands, SMLoc S) { auto Token = Parser.getLexer().peekTok(false); if (Token.is(AsmToken::Identifier)) { @@ -1822,8 +2037,8 @@ MipsAsmParser::MatchAnyRegisterWithoutDollar( return MatchOperand_NoMatch; } -MipsAsmParser::OperandMatchResultTy MipsAsmParser::ParseAnyRegister( - SmallVectorImpl<MCParsedAsmOperand *> &Operands) { +MipsAsmParser::OperandMatchResultTy +MipsAsmParser::ParseAnyRegister(OperandVector &Operands) { DEBUG(dbgs() << "ParseAnyRegister\n"); auto Token = Parser.getTok(); @@ -1850,7 +2065,7 @@ MipsAsmParser::OperandMatchResultTy MipsAsmParser::ParseAnyRegister( } MipsAsmParser::OperandMatchResultTy -MipsAsmParser::ParseImm(SmallVectorImpl<MCParsedAsmOperand *> &Operands) { +MipsAsmParser::ParseImm(OperandVector &Operands) { switch (getLexer().getKind()) { default: return MatchOperand_NoMatch; @@ -1858,6 +2073,7 @@ MipsAsmParser::ParseImm(SmallVectorImpl<MCParsedAsmOperand *> &Operands) { case AsmToken::Minus: case AsmToken::Plus: case AsmToken::Integer: + case AsmToken::Tilde: case AsmToken::String: break; } @@ -1872,8 +2088,8 @@ MipsAsmParser::ParseImm(SmallVectorImpl<MCParsedAsmOperand *> &Operands) { return MatchOperand_Success; } -MipsAsmParser::OperandMatchResultTy MipsAsmParser::ParseJumpTarget( - SmallVectorImpl<MCParsedAsmOperand *> &Operands) { +MipsAsmParser::OperandMatchResultTy +MipsAsmParser::ParseJumpTarget(OperandVector &Operands) { DEBUG(dbgs() << "ParseJumpTarget\n"); SMLoc S = getLexer().getLoc(); @@ -1899,7 +2115,7 @@ MipsAsmParser::OperandMatchResultTy MipsAsmParser::ParseJumpTarget( } MipsAsmParser::OperandMatchResultTy -MipsAsmParser::parseInvNum(SmallVectorImpl<MCParsedAsmOperand *> &Operands) { +MipsAsmParser::parseInvNum(OperandVector &Operands) { const MCExpr *IdVal; // If the first token is '$' we may have register operand. if (Parser.getTok().is(AsmToken::Dollar)) @@ -1917,7 +2133,7 @@ MipsAsmParser::parseInvNum(SmallVectorImpl<MCParsedAsmOperand *> &Operands) { } MipsAsmParser::OperandMatchResultTy -MipsAsmParser::ParseLSAImm(SmallVectorImpl<MCParsedAsmOperand *> &Operands) { +MipsAsmParser::ParseLSAImm(OperandVector &Operands) { switch (getLexer().getKind()) { default: return MatchOperand_NoMatch; @@ -1996,8 +2212,7 @@ MCSymbolRefExpr::VariantKind MipsAsmParser::getVariantKind(StringRef Symbol) { /// ::= '(', register, ')' /// handle it before we iterate so we don't get tripped up by the lack of /// a comma. -bool MipsAsmParser::ParseParenSuffix( - StringRef Name, SmallVectorImpl<MCParsedAsmOperand *> &Operands) { +bool MipsAsmParser::ParseParenSuffix(StringRef Name, OperandVector &Operands) { if (getLexer().is(AsmToken::LParen)) { Operands.push_back( MipsOperand::CreateToken("(", getLexer().getLoc(), *this)); @@ -2025,8 +2240,8 @@ bool MipsAsmParser::ParseParenSuffix( /// ::= '[', integer, ']' /// handle it before we iterate so we don't get tripped up by the lack of /// a comma. -bool MipsAsmParser::ParseBracketSuffix( - StringRef Name, SmallVectorImpl<MCParsedAsmOperand *> &Operands) { +bool MipsAsmParser::ParseBracketSuffix(StringRef Name, + OperandVector &Operands) { if (getLexer().is(AsmToken::LBrac)) { Operands.push_back( MipsOperand::CreateToken("[", getLexer().getLoc(), *this)); @@ -2048,10 +2263,12 @@ bool MipsAsmParser::ParseBracketSuffix( return false; } -bool MipsAsmParser::ParseInstruction( - ParseInstructionInfo &Info, StringRef Name, SMLoc NameLoc, - SmallVectorImpl<MCParsedAsmOperand *> &Operands) { +bool MipsAsmParser::ParseInstruction(ParseInstructionInfo &Info, StringRef Name, + SMLoc NameLoc, OperandVector &Operands) { DEBUG(dbgs() << "ParseInstruction\n"); + // We have reached first instruction, module directive after + // this is forbidden. + getTargetStreamer().setCanHaveModuleDir(false); // Check if we have valid mnemonic if (!mnemonicIsValid(Name, 0)) { Parser.eatToEndOfStatement(); @@ -2098,13 +2315,13 @@ bool MipsAsmParser::ParseInstruction( return false; } -bool MipsAsmParser::reportParseError(StringRef ErrorMsg) { +bool MipsAsmParser::reportParseError(Twine ErrorMsg) { SMLoc Loc = getLexer().getLoc(); Parser.eatToEndOfStatement(); return Error(Loc, ErrorMsg); } -bool MipsAsmParser::reportParseError(SMLoc Loc, StringRef ErrorMsg) { +bool MipsAsmParser::reportParseError(SMLoc Loc, Twine ErrorMsg) { return Error(Loc, ErrorMsg); } @@ -2238,6 +2455,32 @@ bool MipsAsmParser::parseSetNoMips16Directive() { return false; } +bool MipsAsmParser::parseSetFpDirective() { + MipsABIFlagsSection::FpABIKind FpAbiVal; + // Line can be: .set fp=32 + // .set fp=xx + // .set fp=64 + Parser.Lex(); // Eat fp token + AsmToken Tok = Parser.getTok(); + if (Tok.isNot(AsmToken::Equal)) { + reportParseError("unexpected token in statement"); + return false; + } + Parser.Lex(); // Eat '=' token. + Tok = Parser.getTok(); + + if (!parseFpABIValue(FpAbiVal, ".set")) + return false; + + if (getLexer().isNot(AsmToken::EndOfStatement)) { + reportParseError("unexpected token in statement"); + return false; + } + getTargetStreamer().emitDirectiveSetFp(FpAbiVal); + Parser.Lex(); // Consume the EndOfStatement. + return false; +} + bool MipsAsmParser::parseSetAssignment() { StringRef Name; const MCExpr *Value; @@ -2296,25 +2539,6 @@ bool MipsAsmParser::parseSetFeature(uint64_t Feature) { return false; } -bool MipsAsmParser::parseRegister(unsigned &RegNum) { - if (!getLexer().is(AsmToken::Dollar)) - return false; - - Parser.Lex(); - - const AsmToken &Reg = Parser.getTok(); - if (Reg.is(AsmToken::Identifier)) { - RegNum = matchCPURegisterName(Reg.getIdentifier()); - } else if (Reg.is(AsmToken::Integer)) { - RegNum = Reg.getIntVal(); - } else { - return false; - } - - Parser.Lex(); - return true; -} - bool MipsAsmParser::eatComma(StringRef ErrorStr) { if (getLexer().isNot(AsmToken::Comma)) { SMLoc Loc = getLexer().getLoc(); @@ -2332,21 +2556,20 @@ bool MipsAsmParser::parseDirectiveCPLoad(SMLoc Loc) { // FIXME: Warn if cpload is used in Mips16 mode. - SmallVector<MCParsedAsmOperand *, 1> Reg; + SmallVector<std::unique_ptr<MCParsedAsmOperand>, 1> Reg; OperandMatchResultTy ResTy = ParseAnyRegister(Reg); if (ResTy == MatchOperand_NoMatch || ResTy == MatchOperand_ParseFail) { reportParseError("expected register containing function address"); return false; } - MipsOperand *RegOpnd = static_cast<MipsOperand *>(Reg[0]); - if (!RegOpnd->isGPRAsmReg()) { - reportParseError(RegOpnd->getStartLoc(), "invalid register"); + MipsOperand &RegOpnd = static_cast<MipsOperand &>(*Reg[0]); + if (!RegOpnd.isGPRAsmReg()) { + reportParseError(RegOpnd.getStartLoc(), "invalid register"); return false; } - getTargetStreamer().emitDirectiveCpload(RegOpnd->getGPR32Reg()); - delete RegOpnd; + getTargetStreamer().emitDirectiveCpload(RegOpnd.getGPR32Reg()); return false; } @@ -2355,23 +2578,48 @@ bool MipsAsmParser::parseDirectiveCPSetup() { unsigned Save; bool SaveIsReg = true; - if (!parseRegister(FuncReg)) - return reportParseError("expected register containing function address"); - FuncReg = getGPR(FuncReg); + SmallVector<std::unique_ptr<MCParsedAsmOperand>, 1> TmpReg; + OperandMatchResultTy ResTy = ParseAnyRegister(TmpReg); + if (ResTy == MatchOperand_NoMatch) { + reportParseError("expected register containing function address"); + Parser.eatToEndOfStatement(); + return false; + } + + MipsOperand &FuncRegOpnd = static_cast<MipsOperand &>(*TmpReg[0]); + if (!FuncRegOpnd.isGPRAsmReg()) { + reportParseError(FuncRegOpnd.getStartLoc(), "invalid register"); + Parser.eatToEndOfStatement(); + return false; + } + + FuncReg = FuncRegOpnd.getGPR32Reg(); + TmpReg.clear(); if (!eatComma("expected comma parsing directive")) return true; - if (!parseRegister(Save)) { + ResTy = ParseAnyRegister(TmpReg); + if (ResTy == MatchOperand_NoMatch) { const AsmToken &Tok = Parser.getTok(); if (Tok.is(AsmToken::Integer)) { Save = Tok.getIntVal(); SaveIsReg = false; Parser.Lex(); - } else - return reportParseError("expected save register or stack offset"); - } else - Save = getGPR(Save); + } else { + reportParseError("expected save register or stack offset"); + Parser.eatToEndOfStatement(); + return false; + } + } else { + MipsOperand &SaveOpnd = static_cast<MipsOperand &>(*TmpReg[0]); + if (!SaveOpnd.isGPRAsmReg()) { + reportParseError(SaveOpnd.getStartLoc(), "invalid register"); + Parser.eatToEndOfStatement(); + return false; + } + Save = SaveOpnd.getGPR32Reg(); + } if (!eatComma("expected comma parsing directive")) return true; @@ -2414,6 +2662,8 @@ bool MipsAsmParser::parseDirectiveSet() { return parseSetNoAtDirective(); } else if (Tok.getString() == "at") { return parseSetAtDirective(); + } else if (Tok.getString() == "fp") { + return parseSetFpDirective(); } else if (Tok.getString() == "reorder") { return parseSetReorderDirective(); } else if (Tok.getString() == "noreorder") { @@ -2546,6 +2796,134 @@ bool MipsAsmParser::parseDirectiveOption() { return false; } +/// parseDirectiveModule +/// ::= .module oddspreg +/// ::= .module nooddspreg +/// ::= .module fp=value +bool MipsAsmParser::parseDirectiveModule() { + MCAsmLexer &Lexer = getLexer(); + SMLoc L = Lexer.getLoc(); + + if (!getTargetStreamer().getCanHaveModuleDir()) { + // TODO : get a better message. + reportParseError(".module directive must appear before any code"); + return false; + } + + if (Lexer.is(AsmToken::Identifier)) { + StringRef Option = Parser.getTok().getString(); + Parser.Lex(); + + if (Option == "oddspreg") { + getTargetStreamer().emitDirectiveModuleOddSPReg(true, isABI_O32()); + clearFeatureBits(Mips::FeatureNoOddSPReg, "nooddspreg"); + + if (getLexer().isNot(AsmToken::EndOfStatement)) { + reportParseError("Expected end of statement"); + return false; + } + + return false; + } else if (Option == "nooddspreg") { + if (!isABI_O32()) { + Error(L, "'.module nooddspreg' requires the O32 ABI"); + return false; + } + + getTargetStreamer().emitDirectiveModuleOddSPReg(false, isABI_O32()); + setFeatureBits(Mips::FeatureNoOddSPReg, "nooddspreg"); + + if (getLexer().isNot(AsmToken::EndOfStatement)) { + reportParseError("Expected end of statement"); + return false; + } + + return false; + } else if (Option == "fp") { + return parseDirectiveModuleFP(); + } + + return Error(L, "'" + Twine(Option) + "' is not a valid .module option."); + } + + return false; +} + +/// parseDirectiveModuleFP +/// ::= =32 +/// ::= =xx +/// ::= =64 +bool MipsAsmParser::parseDirectiveModuleFP() { + MCAsmLexer &Lexer = getLexer(); + + if (Lexer.isNot(AsmToken::Equal)) { + reportParseError("unexpected token in statement"); + return false; + } + Parser.Lex(); // Eat '=' token. + + MipsABIFlagsSection::FpABIKind FpABI; + if (!parseFpABIValue(FpABI, ".module")) + return false; + + if (getLexer().isNot(AsmToken::EndOfStatement)) { + reportParseError("unexpected token in statement"); + return false; + } + + // Emit appropriate flags. + getTargetStreamer().emitDirectiveModuleFP(FpABI, isABI_O32()); + Parser.Lex(); // Consume the EndOfStatement. + return false; +} + +bool MipsAsmParser::parseFpABIValue(MipsABIFlagsSection::FpABIKind &FpABI, + StringRef Directive) { + MCAsmLexer &Lexer = getLexer(); + + if (Lexer.is(AsmToken::Identifier)) { + StringRef Value = Parser.getTok().getString(); + Parser.Lex(); + + if (Value != "xx") { + reportParseError("unsupported value, expected 'xx', '32' or '64'"); + return false; + } + + if (!isABI_O32()) { + reportParseError("'" + Directive + " fp=xx' requires the O32 ABI"); + return false; + } + + FpABI = MipsABIFlagsSection::FpABIKind::XX; + return true; + } + + if (Lexer.is(AsmToken::Integer)) { + unsigned Value = Parser.getTok().getIntVal(); + Parser.Lex(); + + if (Value != 32 && Value != 64) { + reportParseError("unsupported value, expected 'xx', '32' or '64'"); + return false; + } + + if (Value == 32) { + if (!isABI_O32()) { + reportParseError("'" + Directive + " fp=32' requires the O32 ABI"); + return false; + } + + FpABI = MipsABIFlagsSection::FpABIKind::S32; + } else + FpABI = MipsABIFlagsSection::FpABIKind::S64; + + return true; + } + + return false; +} + bool MipsAsmParser::ParseDirective(AsmToken DirectiveID) { StringRef IDVal = DirectiveID.getString(); @@ -2624,6 +3002,9 @@ bool MipsAsmParser::ParseDirective(AsmToken DirectiveID) { if (IDVal == ".cpsetup") return parseDirectiveCPSetup(); + if (IDVal == ".module") + return parseDirectiveModule(); + return true; } |