void setMacro() { macro = true; }
void setNomacro() { macro = false; }
+ // Set of features that are either architecture features or referenced
+ // by them (e.g.: FeatureNaN2008 implied by FeatureMips32r6).
+ // The full table can be found in MipsGenSubtargetInfo.inc (MipsFeatureKV[]).
+ // The reason we need this mask is explained in the selectArch function.
+ // FIXME: Ideally we would like TableGen to generate this information.
+ static const uint64_t AllArchRelatedMask =
+ Mips::FeatureMips1 | Mips::FeatureMips2 | Mips::FeatureMips3 |
+ Mips::FeatureMips3_32 | Mips::FeatureMips3_32r2 | Mips::FeatureMips4 |
+ Mips::FeatureMips4_32 | Mips::FeatureMips4_32r2 | Mips::FeatureMips5 |
+ Mips::FeatureMips5_32r2 | Mips::FeatureMips32 | Mips::FeatureMips32r2 |
+ Mips::FeatureMips32r6 | Mips::FeatureMips64 | Mips::FeatureMips64r2 |
+ Mips::FeatureMips64r6 | Mips::FeatureCnMips | Mips::FeatureFP64Bit |
+ Mips::FeatureGP64Bit | Mips::FeatureNaN2008;
+
private:
unsigned aTReg;
bool reorder;
MCSubtargetInfo &STI;
MCAsmParser &Parser;
MipsAssemblerOptions Options;
+ MCSymbol *CurrentFn; // Pointer to the function being parsed. It may be a
+ // nullptr, which indicates that no function is currently
+ // selected. This usually happens after an '.end func'
+ // directive.
#define GET_ASSEMBLER_HEADER
#include "MipsGenAsmMatcher.inc"
bool MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
OperandVector &Operands, MCStreamer &Out,
- unsigned &ErrorInfo,
+ uint64_t &ErrorInfo,
bool MatchingInlineAsm) override;
/// Parse a register as used in CFI directives
bool expandLoadAddressReg(MCInst &Inst, SMLoc IDLoc,
SmallVectorImpl<MCInst> &Instructions);
+ void expandLoadAddressSym(MCInst &Inst, SMLoc IDLoc,
+ SmallVectorImpl<MCInst> &Instructions);
+
void expandMemInst(MCInst &Inst, SMLoc IDLoc,
SmallVectorImpl<MCInst> &Instructions, bool isLoad,
bool isImmOpnd);
const MCExpr *evaluateRelocExpr(const MCExpr *Expr, StringRef RelocStr);
bool isEvaluated(const MCExpr *Expr);
+ bool parseSetArchDirective();
bool parseSetFeature(uint64_t Feature);
bool parseDirectiveCPLoad(SMLoc Loc);
bool parseDirectiveCPSetup();
bool parseSetNoAtDirective();
bool parseSetMacroDirective();
bool parseSetNoMacroDirective();
+ bool parseSetMsaDirective();
+ bool parseSetNoMsaDirective();
bool parseSetReorderDirective();
bool parseSetNoReorderDirective();
bool parseSetNoMips16Directive();
bool parseDirectiveGpDWord();
bool parseDirectiveModule();
bool parseDirectiveModuleFP();
- bool parseFpABIValue(Val_GNU_MIPS_ABI &FpABI, StringRef Directive);
+ bool parseFpABIValue(MipsABIFlagsSection::FpABIKind &FpABI,
+ StringRef Directive);
MCSymbolRefExpr::VariantKind getVariantKind(StringRef Symbol);
// Example: INSERT.B $w0[n], $1 => 16 > n >= 0
bool validateMSAIndex(int Val, int RegKind);
+ // Selects a new architecture by updating the FeatureBits with the necessary
+ // info including implied dependencies.
+ // Internally, it clears all the feature bits related to *any* architecture
+ // and selects the new one using the ToggleFeature functionality of the
+ // MCSubtargetInfo object that handles implied dependencies. The reason we
+ // clear all the arch related bits manually is because ToggleFeature only
+ // clears the features that imply the feature being cleared and not the
+ // features implied by the feature being cleared. This is easier to see
+ // with an example:
+ // --------------------------------------------------
+ // | Feature | Implies |
+ // | -------------------------------------------------|
+ // | FeatureMips1 | None |
+ // | FeatureMips2 | FeatureMips1 |
+ // | FeatureMips3 | FeatureMips2 | FeatureMipsGP64 |
+ // | FeatureMips4 | FeatureMips3 |
+ // | ... | |
+ // --------------------------------------------------
+ //
+ // Setting Mips3 is equivalent to set: (FeatureMips3 | FeatureMips2 |
+ // FeatureMipsGP64 | FeatureMips1)
+ // Clearing Mips3 is equivalent to clear (FeatureMips3 | FeatureMips4).
+ void selectArch(StringRef ArchFeature) {
+ uint64_t FeatureBits = STI.getFeatureBits();
+ FeatureBits &= ~MipsAssemblerOptions::AllArchRelatedMask;
+ STI.setFeatureBits(FeatureBits);
+ setAvailableFeatures(
+ ComputeAvailableFeatures(STI.ToggleFeature(ArchFeature)));
+ }
+
void setFeatureBits(unsigned Feature, StringRef FeatureString) {
if (!(STI.getFeatureBits() & Feature)) {
setAvailableFeatures(
((STI.getFeatureBits() & Mips::FeatureEABI) != 0) +
((STI.getFeatureBits() & Mips::FeatureN32) != 0) +
((STI.getFeatureBits() & Mips::FeatureN64) != 0)) == 1);
+
+ if (!isABI_O32() && !useOddSPReg() != 0)
+ report_fatal_error("-mno-odd-spreg requires the O32 ABI");
+
+ CurrentFn = nullptr;
}
MCAsmParser &getParser() const { return Parser; }
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 isABI_FPXX() const { return STI.getFeatureBits() & Mips::FeatureFPXX; }
+
+ bool useOddSPReg() const {
+ return !(STI.getFeatureBits() & Mips::FeatureNoOddSPReg);
+ }
bool inMicroMipsMode() const {
return STI.getFeatureBits() & Mips::FeatureMicroMips;
return STI.getFeatureBits() & Mips::FeatureMips16;
}
// TODO: see how can we get this info.
- bool mipsSEUsesSoftFloat() const { return false; }
+ bool abiUsesSoftFloat() const { return false; }
/// Warn if RegNo is the current assembler temporary.
void WarnIfAssemblerTemporary(int RegNo, SMLoc Loc);
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.useOddSPReg() && RegIdx.Index & 1)
+ AsmParser.Error(StartLoc, "-mno-odd-spreg prohibits the use of odd FPU "
+ "registers");
}
void addFGRH32AsmRegOperands(MCInst &Inst, unsigned N) const {
}
namespace {
-template <int Shift, bool PerformShift>
-void createShiftOr(int64_t Value, unsigned RegNo, SMLoc IDLoc,
+template <bool PerformShift>
+void createShiftOr(MCOperand Operand, unsigned RegNo, SMLoc IDLoc,
SmallVectorImpl<MCInst> &Instructions) {
MCInst tmpInst;
if (PerformShift) {
tmpInst.setOpcode(Mips::ORi);
tmpInst.addOperand(MCOperand::CreateReg(RegNo));
tmpInst.addOperand(MCOperand::CreateReg(RegNo));
- tmpInst.addOperand(
- MCOperand::CreateImm(((Value & (0xffffLL << Shift)) >> Shift)));
+ tmpInst.addOperand(Operand);
tmpInst.setLoc(IDLoc);
Instructions.push_back(tmpInst);
}
+
+template <int Shift, bool PerformShift>
+void createShiftOr(int64_t Value, unsigned RegNo, SMLoc IDLoc,
+ SmallVectorImpl<MCInst> &Instructions) {
+ createShiftOr<PerformShift>(
+ MCOperand::CreateImm(((Value & (0xffffLL << Shift)) >> Shift)), RegNo,
+ IDLoc, Instructions);
+}
}
bool MipsAsmParser::expandLoadImm(MCInst &Inst, SMLoc IDLoc,
SmallVectorImpl<MCInst> &Instructions) {
MCInst tmpInst;
const MCOperand &ImmOp = Inst.getOperand(2);
- assert(ImmOp.isImm() && "expected immediate operand kind");
+ assert((ImmOp.isImm() || ImmOp.isExpr()) &&
+ "expected immediate operand kind");
+ if (!ImmOp.isImm()) {
+ expandLoadAddressSym(Inst, IDLoc, Instructions);
+ return false;
+ }
const MCOperand &SrcRegOp = Inst.getOperand(1);
assert(SrcRegOp.isReg() && "expected register operand kind");
const MCOperand &DstRegOp = Inst.getOperand(0);
SmallVectorImpl<MCInst> &Instructions) {
MCInst tmpInst;
const MCOperand &ImmOp = Inst.getOperand(1);
- assert(ImmOp.isImm() && "expected immediate operand kind");
+ assert((ImmOp.isImm() || ImmOp.isExpr()) &&
+ "expected immediate operand kind");
+ if (!ImmOp.isImm()) {
+ expandLoadAddressSym(Inst, IDLoc, Instructions);
+ return false;
+ }
const MCOperand &RegOp = Inst.getOperand(0);
assert(RegOp.isReg() && "expected register operand kind");
int ImmValue = ImmOp.getImm();
return false;
}
+void
+MipsAsmParser::expandLoadAddressSym(MCInst &Inst, SMLoc IDLoc,
+ SmallVectorImpl<MCInst> &Instructions) {
+ // FIXME: If we do have a valid at register to use, we should generate a
+ // slightly shorter sequence here.
+ MCInst tmpInst;
+ int ExprOperandNo = 1;
+ // Sometimes the assembly parser will get the immediate expression as
+ // a $zero + an immediate.
+ if (Inst.getNumOperands() == 3) {
+ assert(Inst.getOperand(1).getReg() ==
+ (isGP64bit() ? Mips::ZERO_64 : Mips::ZERO));
+ ExprOperandNo = 2;
+ }
+ const MCOperand &SymOp = Inst.getOperand(ExprOperandNo);
+ assert(SymOp.isExpr() && "expected symbol operand kind");
+ const MCOperand &RegOp = Inst.getOperand(0);
+ unsigned RegNo = RegOp.getReg();
+ const MCSymbolRefExpr *Symbol = cast<MCSymbolRefExpr>(SymOp.getExpr());
+ const MCSymbolRefExpr *HiExpr =
+ MCSymbolRefExpr::Create(Symbol->getSymbol().getName(),
+ MCSymbolRefExpr::VK_Mips_ABS_HI, getContext());
+ const MCSymbolRefExpr *LoExpr =
+ MCSymbolRefExpr::Create(Symbol->getSymbol().getName(),
+ MCSymbolRefExpr::VK_Mips_ABS_LO, getContext());
+ if (isGP64bit()) {
+ // If it's a 64-bit architecture, expand to:
+ // la d,sym => lui d,highest(sym)
+ // ori d,d,higher(sym)
+ // dsll d,d,16
+ // ori d,d,hi16(sym)
+ // dsll d,d,16
+ // ori d,d,lo16(sym)
+ const MCSymbolRefExpr *HighestExpr =
+ MCSymbolRefExpr::Create(Symbol->getSymbol().getName(),
+ MCSymbolRefExpr::VK_Mips_HIGHEST, getContext());
+ const MCSymbolRefExpr *HigherExpr =
+ MCSymbolRefExpr::Create(Symbol->getSymbol().getName(),
+ MCSymbolRefExpr::VK_Mips_HIGHER, getContext());
+
+ tmpInst.setOpcode(Mips::LUi);
+ tmpInst.addOperand(MCOperand::CreateReg(RegNo));
+ tmpInst.addOperand(MCOperand::CreateExpr(HighestExpr));
+ Instructions.push_back(tmpInst);
+
+ createShiftOr<false>(MCOperand::CreateExpr(HigherExpr), RegNo, SMLoc(),
+ Instructions);
+ createShiftOr<true>(MCOperand::CreateExpr(HiExpr), RegNo, SMLoc(),
+ Instructions);
+ createShiftOr<true>(MCOperand::CreateExpr(LoExpr), RegNo, SMLoc(),
+ Instructions);
+ } else {
+ // Otherwise, expand to:
+ // la d,sym => lui d,hi16(sym)
+ // ori d,d,lo16(sym)
+ tmpInst.setOpcode(Mips::LUi);
+ tmpInst.addOperand(MCOperand::CreateReg(RegNo));
+ tmpInst.addOperand(MCOperand::CreateExpr(HiExpr));
+ Instructions.push_back(tmpInst);
+
+ createShiftOr<false>(MCOperand::CreateExpr(LoExpr), RegNo, SMLoc(),
+ Instructions);
+ }
+}
+
void MipsAsmParser::expandMemInst(MCInst &Inst, SMLoc IDLoc,
SmallVectorImpl<MCInst> &Instructions,
bool isLoad, bool isImmOpnd) {
bool MipsAsmParser::MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
OperandVector &Operands,
MCStreamer &Out,
- unsigned &ErrorInfo,
+ uint64_t &ErrorInfo,
bool MatchingInlineAsm) {
MCInst Inst;
return true;
case Match_InvalidOperand: {
SMLoc ErrorLoc = IDLoc;
- if (ErrorInfo != ~0U) {
+ if (ErrorInfo != ~0ULL) {
if (ErrorInfo >= Operands.size())
return Error(IDLoc, "too few operands for instruction");
return false;
if (Expr->getKind() == MCExpr::SymbolRef) {
const MCSymbolRefExpr *Ref = static_cast<const MCSymbolRefExpr *>(Expr);
- const StringRef DefSymbol = Ref->getSymbol().getName();
+ StringRef DefSymbol = Ref->getSymbol().getName();
if (DefSymbol.startswith("$")) {
OperandMatchResultTy ResTy =
MatchAnyRegisterNameWithoutDollar(Operands, DefSymbol.substr(1), S);
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);
+
+ // We have reached first instruction, module directive are now forbidden.
+ getTargetStreamer().forbidModuleDirective();
+
// Check if we have valid mnemonic
if (!mnemonicIsValid(Name, 0)) {
Parser.eatToEndOfStatement();
return false;
}
+bool MipsAsmParser::parseSetMsaDirective() {
+ Parser.Lex();
+
+ // If this is not the end of the statement, report an error.
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return reportParseError("unexpected token in statement");
+
+ setFeatureBits(Mips::FeatureMSA, "msa");
+ getTargetStreamer().emitDirectiveSetMsa();
+ return false;
+}
+
+bool MipsAsmParser::parseSetNoMsaDirective() {
+ Parser.Lex();
+
+ // If this is not the end of the statement, report an error.
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return reportParseError("unexpected token in statement");
+
+ clearFeatureBits(Mips::FeatureMSA, "msa");
+ getTargetStreamer().emitDirectiveSetNoMsa();
+ return false;
+}
+
bool MipsAsmParser::parseSetNoMips16Directive() {
Parser.Lex();
// If this is not the end of the statement, report an error.
}
bool MipsAsmParser::parseSetFpDirective() {
- Val_GNU_MIPS_ABI FpAbiVal;
+ MipsABIFlagsSection::FpABIKind FpAbiVal;
// Line can be: .set fp=32
// .set fp=xx
// .set fp=64
reportParseError("unexpected token in statement");
return false;
}
- getTargetStreamer().emitDirectiveSetFp(FpAbiVal, isABI_O32());
+ getTargetStreamer().emitDirectiveSetFp(FpAbiVal);
Parser.Lex(); // Consume the EndOfStatement.
return false;
}
return false;
}
+bool MipsAsmParser::parseSetArchDirective() {
+ Parser.Lex();
+ if (getLexer().isNot(AsmToken::Equal))
+ return reportParseError("unexpected token, expected equals sign");
+
+ Parser.Lex();
+ StringRef Arch;
+ if (Parser.parseIdentifier(Arch))
+ return reportParseError("expected arch identifier");
+
+ StringRef ArchFeatureName =
+ StringSwitch<StringRef>(Arch)
+ .Case("mips1", "mips1")
+ .Case("mips2", "mips2")
+ .Case("mips3", "mips3")
+ .Case("mips4", "mips4")
+ .Case("mips5", "mips5")
+ .Case("mips32", "mips32")
+ .Case("mips32r2", "mips32r2")
+ .Case("mips32r6", "mips32r6")
+ .Case("mips64", "mips64")
+ .Case("mips64r2", "mips64r2")
+ .Case("mips64r6", "mips64r6")
+ .Case("cnmips", "cnmips")
+ .Case("r4000", "mips3") // This is an implementation of Mips3.
+ .Default("");
+
+ if (ArchFeatureName.empty())
+ return reportParseError("unsupported architecture");
+
+ selectArch(ArchFeatureName);
+ getTargetStreamer().emitDirectiveSetArch(Arch);
+ return false;
+}
+
bool MipsAsmParser::parseSetFeature(uint64_t Feature) {
Parser.Lex();
if (getLexer().isNot(AsmToken::EndOfStatement))
case Mips::FeatureMips16:
getTargetStreamer().emitDirectiveSetMips16();
break;
+ case Mips::FeatureMips1:
+ selectArch("mips1");
+ getTargetStreamer().emitDirectiveSetMips1();
+ break;
+ case Mips::FeatureMips2:
+ selectArch("mips2");
+ getTargetStreamer().emitDirectiveSetMips2();
+ break;
+ case Mips::FeatureMips3:
+ selectArch("mips3");
+ getTargetStreamer().emitDirectiveSetMips3();
+ break;
+ case Mips::FeatureMips4:
+ selectArch("mips4");
+ getTargetStreamer().emitDirectiveSetMips4();
+ break;
+ case Mips::FeatureMips5:
+ selectArch("mips5");
+ getTargetStreamer().emitDirectiveSetMips5();
+ break;
+ case Mips::FeatureMips32:
+ selectArch("mips32");
+ getTargetStreamer().emitDirectiveSetMips32();
+ break;
case Mips::FeatureMips32r2:
- setFeatureBits(Mips::FeatureMips32r2, "mips32r2");
+ selectArch("mips32r2");
getTargetStreamer().emitDirectiveSetMips32R2();
break;
+ case Mips::FeatureMips32r6:
+ selectArch("mips32r6");
+ getTargetStreamer().emitDirectiveSetMips32R6();
+ break;
case Mips::FeatureMips64:
- setFeatureBits(Mips::FeatureMips64, "mips64");
+ selectArch("mips64");
getTargetStreamer().emitDirectiveSetMips64();
break;
case Mips::FeatureMips64r2:
- setFeatureBits(Mips::FeatureMips64r2, "mips64r2");
+ selectArch("mips64r2");
getTargetStreamer().emitDirectiveSetMips64R2();
break;
+ case Mips::FeatureMips64r6:
+ selectArch("mips64r6");
+ getTargetStreamer().emitDirectiveSetMips64R6();
+ break;
}
return false;
}
return parseSetNoAtDirective();
} else if (Tok.getString() == "at") {
return parseSetAtDirective();
+ } else if (Tok.getString() == "arch") {
+ return parseSetArchDirective();
} else if (Tok.getString() == "fp") {
return parseSetFpDirective();
} else if (Tok.getString() == "reorder") {
return false;
} else if (Tok.getString() == "micromips") {
return parseSetFeature(Mips::FeatureMicroMips);
+ } else if (Tok.getString() == "mips1") {
+ return parseSetFeature(Mips::FeatureMips1);
+ } else if (Tok.getString() == "mips2") {
+ return parseSetFeature(Mips::FeatureMips2);
+ } else if (Tok.getString() == "mips3") {
+ return parseSetFeature(Mips::FeatureMips3);
+ } else if (Tok.getString() == "mips4") {
+ return parseSetFeature(Mips::FeatureMips4);
+ } else if (Tok.getString() == "mips5") {
+ return parseSetFeature(Mips::FeatureMips5);
+ } else if (Tok.getString() == "mips32") {
+ return parseSetFeature(Mips::FeatureMips32);
} else if (Tok.getString() == "mips32r2") {
return parseSetFeature(Mips::FeatureMips32r2);
+ } else if (Tok.getString() == "mips32r6") {
+ return parseSetFeature(Mips::FeatureMips32r6);
} else if (Tok.getString() == "mips64") {
return parseSetFeature(Mips::FeatureMips64);
} else if (Tok.getString() == "mips64r2") {
return parseSetFeature(Mips::FeatureMips64r2);
+ } else if (Tok.getString() == "mips64r6") {
+ return parseSetFeature(Mips::FeatureMips64r6);
} else if (Tok.getString() == "dsp") {
return parseSetFeature(Mips::FeatureDSP);
+ } else if (Tok.getString() == "msa") {
+ return parseSetMsaDirective();
+ } else if (Tok.getString() == "nomsa") {
+ return parseSetNoMsaDirective();
} else {
// It is just an identifier, look for an assignment.
parseSetAssignment();
return false;
}
+/// parseDirectiveModule
+/// ::= .module oddspreg
+/// ::= .module nooddspreg
+/// ::= .module fp=value
bool MipsAsmParser::parseDirectiveModule() {
- // Line can be: .module fp=32
- // .module fp=xx
- // .module fp=64
- if (!getTargetStreamer().getCanHaveModuleDir()) {
+ MCAsmLexer &Lexer = getLexer();
+ SMLoc L = Lexer.getLoc();
+
+ if (!getTargetStreamer().isModuleDirectiveAllowed()) {
// TODO : get a better message.
reportParseError(".module directive must appear before any code");
return false;
}
- AsmToken Tok = Parser.getTok();
- if (Tok.isNot(AsmToken::Identifier) && Tok.getString() != "fp") {
- reportParseError("unexpected token in .module directive, 'fp' expected");
- 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.");
}
- Parser.Lex(); // Eat fp token
- Tok = Parser.getTok();
- if (Tok.isNot(AsmToken::Equal)) {
+
+ 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.
- Val_GNU_MIPS_ABI FpABI;
+ MipsABIFlagsSection::FpABIKind FpABI;
if (!parseFpABIValue(FpABI, ".module"))
return false;
// Emit appropriate flags.
getTargetStreamer().emitDirectiveModuleFP(FpABI, isABI_O32());
-
+ Parser.Lex(); // Consume the EndOfStatement.
return false;
}
-bool MipsAsmParser::parseFpABIValue(Val_GNU_MIPS_ABI &FpABI,
+bool MipsAsmParser::parseFpABIValue(MipsABIFlagsSection::FpABIKind &FpABI,
StringRef Directive) {
MCAsmLexer &Lexer = getLexer();
return false;
}
- FpABI = MipsABIFlagsSection::Val_GNU_MIPS_ABI_FP_XX;
+ FpABI = MipsABIFlagsSection::FpABIKind::XX;
return true;
}
return false;
}
- FpABI = MipsABIFlagsSection::Val_GNU_MIPS_ABI_FP_DOUBLE;
- return true;
- } else {
- if (isABI_N32() || isABI_N64()) {
- FpABI = MipsABIFlagsSection::Val_GNU_MIPS_ABI_FP_DOUBLE;
- return true;
- }
-
- if (isABI_O32()) {
- FpABI = MipsABIFlagsSection::Val_GNU_MIPS_ABI_FP_64;
- return true;
- }
+ FpABI = MipsABIFlagsSection::FpABIKind::S32;
+ } else
+ FpABI = MipsABIFlagsSection::FpABIKind::S64;
- llvm_unreachable("Unknown ABI");
- }
+ return true;
}
return false;
parseDataDirective(8, DirectiveID.getLoc());
return false;
}
-
if (IDVal == ".ent") {
- // Ignore this directive for now.
- Parser.Lex();
+ StringRef SymbolName;
+
+ if (Parser.parseIdentifier(SymbolName)) {
+ reportParseError("expected identifier after .ent");
+ return false;
+ }
+
+ // There's an undocumented extension that allows an integer to
+ // follow the name of the procedure which AFAICS is ignored by GAS.
+ // Example: .ent foo,2
+ if (getLexer().isNot(AsmToken::EndOfStatement)) {
+ if (getLexer().isNot(AsmToken::Comma)) {
+ // Even though we accept this undocumented extension for compatibility
+ // reasons, the additional integer argument does not actually change
+ // the behaviour of the '.ent' directive, so we would like to discourage
+ // its use. We do this by not referring to the extended version in
+ // error messages which are not directly related to its use.
+ reportParseError("unexpected token, expected end of statement");
+ return false;
+ }
+ Parser.Lex(); // Eat the comma.
+ const MCExpr *DummyNumber;
+ int64_t DummyNumberVal;
+ // If the user was explicitly trying to use the extended version,
+ // we still give helpful extension-related error messages.
+ if (Parser.parseExpression(DummyNumber)) {
+ reportParseError("expected number after comma");
+ return false;
+ }
+ if (!DummyNumber->EvaluateAsAbsolute(DummyNumberVal)) {
+ reportParseError("expected an absolute expression after comma");
+ return false;
+ }
+ }
+
+ // If this is not the end of the statement, report an error.
+ if (getLexer().isNot(AsmToken::EndOfStatement)) {
+ reportParseError("unexpected token, expected end of statement");
+ return false;
+ }
+
+ MCSymbol *Sym = getContext().GetOrCreateSymbol(SymbolName);
+
+ getTargetStreamer().emitDirectiveEnt(*Sym);
+ CurrentFn = Sym;
return false;
}
if (IDVal == ".end") {
- // Ignore this directive for now.
- Parser.Lex();
+ StringRef SymbolName;
+
+ if (Parser.parseIdentifier(SymbolName)) {
+ reportParseError("expected identifier after .end");
+ return false;
+ }
+
+ if (getLexer().isNot(AsmToken::EndOfStatement)) {
+ reportParseError("unexpected token, expected end of statement");
+ return false;
+ }
+
+ if (CurrentFn == nullptr) {
+ reportParseError(".end used without .ent");
+ return false;
+ }
+
+ if ((SymbolName != CurrentFn->getName())) {
+ reportParseError(".end symbol does not match .ent symbol");
+ return false;
+ }
+
+ getTargetStreamer().emitDirectiveEnd(SymbolName);
+ CurrentFn = nullptr;
return false;
}
if (IDVal == ".frame") {
- // Ignore this directive for now.
- Parser.eatToEndOfStatement();
+ // .frame $stack_reg, frame_size_in_bytes, $return_reg
+ SmallVector<std::unique_ptr<MCParsedAsmOperand>, 1> TmpReg;
+ OperandMatchResultTy ResTy = ParseAnyRegister(TmpReg);
+ if (ResTy == MatchOperand_NoMatch || ResTy == MatchOperand_ParseFail) {
+ reportParseError("expected stack register");
+ return false;
+ }
+
+ MipsOperand &StackRegOpnd = static_cast<MipsOperand &>(*TmpReg[0]);
+ if (!StackRegOpnd.isGPRAsmReg()) {
+ reportParseError(StackRegOpnd.getStartLoc(),
+ "expected general purpose register");
+ return false;
+ }
+ unsigned StackReg = StackRegOpnd.getGPR32Reg();
+
+ if (Parser.getTok().is(AsmToken::Comma))
+ Parser.Lex();
+ else {
+ reportParseError("unexpected token, expected comma");
+ return false;
+ }
+
+ // Parse the frame size.
+ const MCExpr *FrameSize;
+ int64_t FrameSizeVal;
+
+ if (Parser.parseExpression(FrameSize)) {
+ reportParseError("expected frame size value");
+ return false;
+ }
+
+ if (!FrameSize->EvaluateAsAbsolute(FrameSizeVal)) {
+ reportParseError("frame size not an absolute expression");
+ return false;
+ }
+
+ if (Parser.getTok().is(AsmToken::Comma))
+ Parser.Lex();
+ else {
+ reportParseError("unexpected token, expected comma");
+ return false;
+ }
+
+ // Parse the return register.
+ TmpReg.clear();
+ ResTy = ParseAnyRegister(TmpReg);
+ if (ResTy == MatchOperand_NoMatch || ResTy == MatchOperand_ParseFail) {
+ reportParseError("expected return register");
+ return false;
+ }
+
+ MipsOperand &ReturnRegOpnd = static_cast<MipsOperand &>(*TmpReg[0]);
+ if (!ReturnRegOpnd.isGPRAsmReg()) {
+ reportParseError(ReturnRegOpnd.getStartLoc(),
+ "expected general purpose register");
+ return false;
+ }
+
+ // If this is not the end of the statement, report an error.
+ if (getLexer().isNot(AsmToken::EndOfStatement)) {
+ reportParseError("unexpected token, expected end of statement");
+ return false;
+ }
+
+ getTargetStreamer().emitFrame(StackReg, FrameSizeVal,
+ ReturnRegOpnd.getGPR32Reg());
return false;
}
return parseDirectiveSet();
}
- if (IDVal == ".fmask") {
- // Ignore this directive for now.
- Parser.eatToEndOfStatement();
- return false;
- }
+ if (IDVal == ".mask" || IDVal == ".fmask") {
+ // .mask bitmask, frame_offset
+ // bitmask: One bit for each register used.
+ // frame_offset: Offset from Canonical Frame Address ($sp on entry) where
+ // first register is expected to be saved.
+ // Examples:
+ // .mask 0x80000000, -4
+ // .fmask 0x80000000, -4
+ //
- if (IDVal == ".mask") {
- // Ignore this directive for now.
- Parser.eatToEndOfStatement();
+ // Parse the bitmask
+ const MCExpr *BitMask;
+ int64_t BitMaskVal;
+
+ if (Parser.parseExpression(BitMask)) {
+ reportParseError("expected bitmask value");
+ return false;
+ }
+
+ if (!BitMask->EvaluateAsAbsolute(BitMaskVal)) {
+ reportParseError("bitmask not an absolute expression");
+ return false;
+ }
+
+ if (Parser.getTok().is(AsmToken::Comma))
+ Parser.Lex();
+ else {
+ reportParseError("unexpected token, expected comma");
+ return false;
+ }
+
+ // Parse the frame_offset
+ const MCExpr *FrameOffset;
+ int64_t FrameOffsetVal;
+
+ if (Parser.parseExpression(FrameOffset)) {
+ reportParseError("expected frame offset value");
+ return false;
+ }
+
+ if (!FrameOffset->EvaluateAsAbsolute(FrameOffsetVal)) {
+ reportParseError("frame offset not an absolute expression");
+ return false;
+ }
+
+ // If this is not the end of the statement, report an error.
+ if (getLexer().isNot(AsmToken::EndOfStatement)) {
+ reportParseError("unexpected token, expected end of statement");
+ return false;
+ }
+
+ if (IDVal == ".mask")
+ getTargetStreamer().emitMask(BitMaskVal, FrameOffsetVal);
+ else
+ getTargetStreamer().emitFMask(BitMaskVal, FrameOffsetVal);
return false;
}
projects / oota-llvm.git / blobdiff