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Dllexport stuff cleanup:
1. Emit external function type information for all COFF targets since it's a feature of object format 2. Emit linker directives only for cygming (since this is ld-specific stuff) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84214 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -225,7 +225,7 @@ void X86AsmPrinter::printSymbolOperand(const MachineOperand &MO) {
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std::string Name = Mang->getMangledName(GV, Suffix, Suffix[0] != '\0');
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if (Subtarget->isTargetCygMing()) {
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X86COFFMachineModuleInfo &COFFMMI =
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X86COFFMachineModuleInfo &COFFMMI =
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MMI->getObjFileInfo<X86COFFMachineModuleInfo>();
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COFFMMI.DecorateCygMingName(Name, GV, *TM.getTargetData());
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}
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@ -871,48 +871,54 @@ void X86AsmPrinter::EmitEndOfAsmFile(Module &M) {
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// linker can safely perform dead code stripping. Since LLVM never
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// generates code that does this, it is always safe to set.
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O << "\t.subsections_via_symbols\n";
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}
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}
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if (Subtarget->isTargetCOFF()) {
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// Necessary for dllexport support
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std::vector<std::string> DLLExportedFns, DLLExportedGlobals;
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X86COFFMachineModuleInfo &COFFMMI =
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X86COFFMachineModuleInfo &COFFMMI =
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MMI->getObjFileInfo<X86COFFMachineModuleInfo>();
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TargetLoweringObjectFileCOFF &TLOFCOFF =
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static_cast<TargetLoweringObjectFileCOFF&>(getObjFileLowering());
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for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I)
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if (I->hasDLLExportLinkage())
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DLLExportedFns.push_back(Mang->getMangledName(I));
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for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
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I != E; ++I)
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if (I->hasDLLExportLinkage())
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DLLExportedGlobals.push_back(Mang->getMangledName(I));
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if (Subtarget->isTargetCygMing()) {
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// Emit type information for external functions
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for (X86COFFMachineModuleInfo::stub_iterator I = COFFMMI.stub_begin(),
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// Emit type information for external functions
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for (X86COFFMachineModuleInfo::stub_iterator I = COFFMMI.stub_begin(),
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E = COFFMMI.stub_end(); I != E; ++I) {
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O << "\t.def\t " << I->getKeyData()
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O << "\t.def\t " << I->getKeyData()
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<< ";\t.scl\t" << COFF::C_EXT
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<< ";\t.type\t" << (COFF::DT_FCN << COFF::N_BTSHFT)
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<< ";\t.endef\n";
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}
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}
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// Output linker support code for dllexported globals on windows.
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if (!DLLExportedGlobals.empty() || !DLLExportedFns.empty()) {
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OutStreamer.SwitchSection(TLOFCOFF.getCOFFSection(".section .drectve",
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true,
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if (Subtarget->isTargetCygMing()) {
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// Necessary for dllexport support
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std::vector<std::string> DLLExportedFns, DLLExportedGlobals;
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TargetLoweringObjectFileCOFF &TLOFCOFF =
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static_cast<TargetLoweringObjectFileCOFF&>(getObjFileLowering());
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for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I)
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if (I->hasDLLExportLinkage()) {
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std::string Name = Mang->getMangledName(I);
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COFFMMI.DecorateCygMingName(Name, I, *TM.getTargetData());
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DLLExportedFns.push_back(Name);
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}
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for (Module::const_global_iterator I = M.global_begin(),
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E = M.global_end(); I != E; ++I)
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if (I->hasDLLExportLinkage()) {
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std::string Name = Mang->getMangledName(I);
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COFFMMI.DecorateCygMingName(Name, I, *TM.getTargetData());
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DLLExportedGlobals.push_back(Mang->getMangledName(I));
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}
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// Output linker support code for dllexported globals on windows.
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if (!DLLExportedGlobals.empty() || !DLLExportedFns.empty()) {
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OutStreamer.SwitchSection(TLOFCOFF.getCOFFSection(".section .drectve",
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true,
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SectionKind::getMetadata()));
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for (unsigned i = 0, e = DLLExportedGlobals.size(); i != e; ++i)
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O << "\t.ascii \" -export:" << DLLExportedGlobals[i] << ",data\"\n";
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for (unsigned i = 0, e = DLLExportedFns.size(); i != e; ++i)
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O << "\t.ascii \" -export:" << DLLExportedFns[i] << "\"\n";
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for (unsigned i = 0, e = DLLExportedGlobals.size(); i != e; ++i)
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O << "\t.ascii \" -export:" << DLLExportedGlobals[i] << ",data\"\n";
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for (unsigned i = 0, e = DLLExportedFns.size(); i != e; ++i)
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O << "\t.ascii \" -export:" << DLLExportedFns[i] << "\"\n";
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}
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}
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}
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}
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