diff options
Diffstat (limited to 'contrib/llvm/lib/Target/X86/X86AsmPrinter.cpp')
| -rw-r--r-- | contrib/llvm/lib/Target/X86/X86AsmPrinter.cpp | 146 |
1 files changed, 63 insertions, 83 deletions
diff --git a/contrib/llvm/lib/Target/X86/X86AsmPrinter.cpp b/contrib/llvm/lib/Target/X86/X86AsmPrinter.cpp index d06e94f..f97557e 100644 --- a/contrib/llvm/lib/Target/X86/X86AsmPrinter.cpp +++ b/contrib/llvm/lib/Target/X86/X86AsmPrinter.cpp @@ -47,23 +47,22 @@ using namespace llvm; /// runOnMachineFunction - Emit the function body. /// bool X86AsmPrinter::runOnMachineFunction(MachineFunction &MF) { + Subtarget = &MF.getSubtarget<X86Subtarget>(); + SMShadowTracker.startFunction(MF); SetupMachineFunction(MF); if (Subtarget->isTargetCOFF()) { bool Intrn = MF.getFunction()->hasInternalLinkage(); - OutStreamer.BeginCOFFSymbolDef(CurrentFnSym); - OutStreamer.EmitCOFFSymbolStorageClass(Intrn ? COFF::IMAGE_SYM_CLASS_STATIC - : COFF::IMAGE_SYM_CLASS_EXTERNAL); - OutStreamer.EmitCOFFSymbolType(COFF::IMAGE_SYM_DTYPE_FUNCTION + OutStreamer->BeginCOFFSymbolDef(CurrentFnSym); + OutStreamer->EmitCOFFSymbolStorageClass(Intrn ? COFF::IMAGE_SYM_CLASS_STATIC + : COFF::IMAGE_SYM_CLASS_EXTERNAL); + OutStreamer->EmitCOFFSymbolType(COFF::IMAGE_SYM_DTYPE_FUNCTION << COFF::SCT_COMPLEX_TYPE_SHIFT); - OutStreamer.EndCOFFSymbolDef(); + OutStreamer->EndCOFFSymbolDef(); } - // Have common code print out the function header with linkage info etc. - EmitFunctionHeader(); - // Emit the rest of the function body. EmitFunctionBody(); @@ -98,7 +97,7 @@ static void printSymbolOperand(X86AsmPrinter &P, const MachineOperand &MO, // Handle dllimport linkage. if (MO.getTargetFlags() == X86II::MO_DLLIMPORT) GVSym = - P.OutContext.GetOrCreateSymbol(Twine("__imp_") + GVSym->getName()); + P.OutContext.getOrCreateSymbol(Twine("__imp_") + GVSym->getName()); if (MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY || MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY_PIC_BASE) { @@ -505,26 +504,27 @@ bool X86AsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, } void X86AsmPrinter::EmitStartOfAsmFile(Module &M) { - if (Subtarget->isTargetMachO()) - OutStreamer.SwitchSection(getObjFileLowering().getTextSection()); + Triple TT(TM.getTargetTriple()); - if (Subtarget->isTargetCOFF()) { + if (TT.isOSBinFormatMachO()) + OutStreamer->SwitchSection(getObjFileLowering().getTextSection()); + + if (TT.isOSBinFormatCOFF()) { // Emit an absolute @feat.00 symbol. This appears to be some kind of // compiler features bitfield read by link.exe. - if (!Subtarget->is64Bit()) { - MCSymbol *S = MMI->getContext().GetOrCreateSymbol(StringRef("@feat.00")); - OutStreamer.BeginCOFFSymbolDef(S); - OutStreamer.EmitCOFFSymbolStorageClass(COFF::IMAGE_SYM_CLASS_STATIC); - OutStreamer.EmitCOFFSymbolType(COFF::IMAGE_SYM_DTYPE_NULL); - OutStreamer.EndCOFFSymbolDef(); + if (TT.getArch() == Triple::x86) { + MCSymbol *S = MMI->getContext().getOrCreateSymbol(StringRef("@feat.00")); + OutStreamer->BeginCOFFSymbolDef(S); + OutStreamer->EmitCOFFSymbolStorageClass(COFF::IMAGE_SYM_CLASS_STATIC); + OutStreamer->EmitCOFFSymbolType(COFF::IMAGE_SYM_DTYPE_NULL); + OutStreamer->EndCOFFSymbolDef(); // According to the PE-COFF spec, the LSB of this value marks the object // for "registered SEH". This means that all SEH handler entry points // must be registered in .sxdata. Use of any unregistered handlers will // cause the process to terminate immediately. LLVM does not know how to // register any SEH handlers, so its object files should be safe. - S->setAbsolute(); - OutStreamer.EmitSymbolAttribute(S, MCSA_Global); - OutStreamer.EmitAssignment( + OutStreamer->EmitSymbolAttribute(S, MCSA_Global); + OutStreamer->EmitAssignment( S, MCConstantExpr::Create(int64_t(1), MMI->getContext())); } } @@ -558,14 +558,13 @@ MCSymbol *X86AsmPrinter::GetCPISymbol(unsigned CPID) const { const MachineConstantPoolEntry &CPE = MF->getConstantPool()->getConstants()[CPID]; if (!CPE.isMachineConstantPoolEntry()) { - SectionKind Kind = - CPE.getSectionKind(TM.getSubtargetImpl()->getDataLayout()); + SectionKind Kind = CPE.getSectionKind(TM.getDataLayout()); const Constant *C = CPE.Val.ConstVal; if (const MCSectionCOFF *S = dyn_cast<MCSectionCOFF>( getObjFileLowering().getSectionForConstant(Kind, C))) { if (MCSymbol *Sym = S->getCOMDATSymbol()) { if (Sym->isUndefined()) - OutStreamer.EmitSymbolAttribute(Sym, MCSA_Global); + OutStreamer->EmitSymbolAttribute(Sym, MCSA_Global); return Sym; } } @@ -579,31 +578,34 @@ void X86AsmPrinter::GenerateExportDirective(const MCSymbol *Sym, bool IsData) { SmallString<128> Directive; raw_svector_ostream OS(Directive); StringRef Name = Sym->getName(); + Triple TT(TM.getTargetTriple()); - if (Subtarget->isTargetKnownWindowsMSVC()) + if (TT.isKnownWindowsMSVCEnvironment()) OS << " /EXPORT:"; else OS << " -export:"; - if ((Subtarget->isTargetWindowsGNU() || Subtarget->isTargetWindowsCygwin()) && + if ((TT.isWindowsGNUEnvironment() || TT.isWindowsCygwinEnvironment()) && (Name[0] == getDataLayout().getGlobalPrefix())) Name = Name.drop_front(); OS << Name; if (IsData) { - if (Subtarget->isTargetKnownWindowsMSVC()) + if (TT.isKnownWindowsMSVCEnvironment()) OS << ",DATA"; else OS << ",data"; } OS.flush(); - OutStreamer.EmitBytes(Directive); + OutStreamer->EmitBytes(Directive); } void X86AsmPrinter::EmitEndOfAsmFile(Module &M) { - if (Subtarget->isTargetMachO()) { + Triple TT(TM.getTargetTriple()); + + if (TT.isOSBinFormatMachO()) { // All darwin targets use mach-o. MachineModuleInfoMachO &MMIMacho = MMI->getObjFileInfo<MachineModuleInfoMachO>(); @@ -613,58 +615,55 @@ void X86AsmPrinter::EmitEndOfAsmFile(Module &M) { Stubs = MMIMacho.GetFnStubList(); if (!Stubs.empty()) { - const MCSection *TheSection = - OutContext.getMachOSection("__IMPORT", "__jump_table", - MachO::S_SYMBOL_STUBS | - MachO::S_ATTR_SELF_MODIFYING_CODE | - MachO::S_ATTR_PURE_INSTRUCTIONS, - 5, SectionKind::getMetadata()); - OutStreamer.SwitchSection(TheSection); + MCSection *TheSection = OutContext.getMachOSection( + "__IMPORT", "__jump_table", + MachO::S_SYMBOL_STUBS | MachO::S_ATTR_SELF_MODIFYING_CODE | + MachO::S_ATTR_PURE_INSTRUCTIONS, + 5, SectionKind::getMetadata()); + OutStreamer->SwitchSection(TheSection); for (const auto &Stub : Stubs) { // L_foo$stub: - OutStreamer.EmitLabel(Stub.first); + OutStreamer->EmitLabel(Stub.first); // .indirect_symbol _foo - OutStreamer.EmitSymbolAttribute(Stub.second.getPointer(), - MCSA_IndirectSymbol); + OutStreamer->EmitSymbolAttribute(Stub.second.getPointer(), + MCSA_IndirectSymbol); // hlt; hlt; hlt; hlt; hlt hlt = 0xf4. const char HltInsts[] = "\xf4\xf4\xf4\xf4\xf4"; - OutStreamer.EmitBytes(StringRef(HltInsts, 5)); + OutStreamer->EmitBytes(StringRef(HltInsts, 5)); } Stubs.clear(); - OutStreamer.AddBlankLine(); + OutStreamer->AddBlankLine(); } // Output stubs for external and common global variables. Stubs = MMIMacho.GetGVStubList(); if (!Stubs.empty()) { - const MCSection *TheSection = - OutContext.getMachOSection("__IMPORT", "__pointers", - MachO::S_NON_LAZY_SYMBOL_POINTERS, - SectionKind::getMetadata()); - OutStreamer.SwitchSection(TheSection); + MCSection *TheSection = OutContext.getMachOSection( + "__IMPORT", "__pointers", MachO::S_NON_LAZY_SYMBOL_POINTERS, + SectionKind::getMetadata()); + OutStreamer->SwitchSection(TheSection); for (auto &Stub : Stubs) - emitNonLazySymbolPointer(OutStreamer, Stub.first, Stub.second); + emitNonLazySymbolPointer(*OutStreamer, Stub.first, Stub.second); Stubs.clear(); - OutStreamer.AddBlankLine(); + OutStreamer->AddBlankLine(); } Stubs = MMIMacho.GetHiddenGVStubList(); if (!Stubs.empty()) { - const MCSection *TheSection = - OutContext.getMachOSection("__IMPORT", "__pointers", - MachO::S_NON_LAZY_SYMBOL_POINTERS, - SectionKind::getMetadata()); - OutStreamer.SwitchSection(TheSection); + MCSection *TheSection = OutContext.getMachOSection( + "__IMPORT", "__pointers", MachO::S_NON_LAZY_SYMBOL_POINTERS, + SectionKind::getMetadata()); + OutStreamer->SwitchSection(TheSection); for (auto &Stub : Stubs) - emitNonLazySymbolPointer(OutStreamer, Stub.first, Stub.second); + emitNonLazySymbolPointer(*OutStreamer, Stub.first, Stub.second); Stubs.clear(); - OutStreamer.AddBlankLine(); + OutStreamer->AddBlankLine(); } SM.serializeToStackMapSection(); @@ -674,16 +673,17 @@ void X86AsmPrinter::EmitEndOfAsmFile(Module &M) { // implementation of multiple entry points). If this doesn't occur, the // linker can safely perform dead code stripping. Since LLVM never // generates code that does this, it is always safe to set. - OutStreamer.EmitAssemblerFlag(MCAF_SubsectionsViaSymbols); + OutStreamer->EmitAssemblerFlag(MCAF_SubsectionsViaSymbols); } - if (Subtarget->isTargetKnownWindowsMSVC() && MMI->usesVAFloatArgument()) { - StringRef SymbolName = Subtarget->is64Bit() ? "_fltused" : "__fltused"; - MCSymbol *S = MMI->getContext().GetOrCreateSymbol(SymbolName); - OutStreamer.EmitSymbolAttribute(S, MCSA_Global); + if (TT.isKnownWindowsMSVCEnvironment() && MMI->usesVAFloatArgument()) { + StringRef SymbolName = + (TT.getArch() == Triple::x86_64) ? "_fltused" : "__fltused"; + MCSymbol *S = MMI->getContext().getOrCreateSymbol(SymbolName); + OutStreamer->EmitSymbolAttribute(S, MCSA_Global); } - if (Subtarget->isTargetCOFF()) { + if (TT.isOSBinFormatCOFF()) { // Necessary for dllexport support std::vector<const MCSymbol*> DLLExportedFns, DLLExportedGlobals; @@ -710,7 +710,7 @@ void X86AsmPrinter::EmitEndOfAsmFile(Module &M) { const TargetLoweringObjectFileCOFF &TLOFCOFF = static_cast<const TargetLoweringObjectFileCOFF&>(getObjFileLowering()); - OutStreamer.SwitchSection(TLOFCOFF.getDrectveSection()); + OutStreamer->SwitchSection(TLOFCOFF.getDrectveSection()); for (auto & Symbol : DLLExportedGlobals) GenerateExportDirective(Symbol, /*IsData=*/true); @@ -719,28 +719,8 @@ void X86AsmPrinter::EmitEndOfAsmFile(Module &M) { } } - if (Subtarget->isTargetELF()) { - const TargetLoweringObjectFileELF &TLOFELF = - static_cast<const TargetLoweringObjectFileELF &>(getObjFileLowering()); - - MachineModuleInfoELF &MMIELF = MMI->getObjFileInfo<MachineModuleInfoELF>(); - - // Output stubs for external and common global variables. - MachineModuleInfoELF::SymbolListTy Stubs = MMIELF.GetGVStubList(); - if (!Stubs.empty()) { - OutStreamer.SwitchSection(TLOFELF.getDataRelSection()); - const DataLayout *TD = TM.getSubtargetImpl()->getDataLayout(); - - for (const auto &Stub : Stubs) { - OutStreamer.EmitLabel(Stub.first); - OutStreamer.EmitSymbolValue(Stub.second.getPointer(), - TD->getPointerSize()); - } - Stubs.clear(); - } - + if (TT.isOSBinFormatELF()) SM.serializeToStackMapSection(); - } } //===----------------------------------------------------------------------===// |
