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Dllexport stuff cleanup:

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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
This commit is contained in:
Anton Korobeynikov 2009-10-15 22:36:18 +00:00
parent 452b54a8ae
commit 4fac9470c4
1 changed files with 40 additions and 34 deletions
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74
lib/Target/X86/AsmPrinter/X86AsmPrinter.cpp
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@ -225,7 +225,7 @@ void X86AsmPrinter::printSymbolOperand(const MachineOperand &MO) {
std::string Name = Mang->getMangledName(GV, Suffix, Suffix[0] != '\0');
if (Subtarget->isTargetCygMing()) {
X86COFFMachineModuleInfo &COFFMMI =
X86COFFMachineModuleInfo &COFFMMI =
MMI->getObjFileInfo<X86COFFMachineModuleInfo>();
COFFMMI.DecorateCygMingName(Name, GV, *TM.getTargetData());
}
@ -871,48 +871,54 @@ void X86AsmPrinter::EmitEndOfAsmFile(Module &M) {
// linker can safely perform dead code stripping. Since LLVM never
// generates code that does this, it is always safe to set.
O << "\t.subsections_via_symbols\n";
}
}
if (Subtarget->isTargetCOFF()) {
// Necessary for dllexport support
std::vector<std::string> DLLExportedFns, DLLExportedGlobals;
X86COFFMachineModuleInfo &COFFMMI =
X86COFFMachineModuleInfo &COFFMMI =
MMI->getObjFileInfo<X86COFFMachineModuleInfo>();
TargetLoweringObjectFileCOFF &TLOFCOFF =
static_cast<TargetLoweringObjectFileCOFF&>(getObjFileLowering());
for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I)
if (I->hasDLLExportLinkage())
DLLExportedFns.push_back(Mang->getMangledName(I));
for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
I != E; ++I)
if (I->hasDLLExportLinkage())
DLLExportedGlobals.push_back(Mang->getMangledName(I));
if (Subtarget->isTargetCygMing()) {
// Emit type information for external functions
for (X86COFFMachineModuleInfo::stub_iterator I = COFFMMI.stub_begin(),
// Emit type information for external functions
for (X86COFFMachineModuleInfo::stub_iterator I = COFFMMI.stub_begin(),
E = COFFMMI.stub_end(); I != E; ++I) {
O << "\t.def\t " << I->getKeyData()
O << "\t.def\t " << I->getKeyData()
<< ";\t.scl\t" << COFF::C_EXT
<< ";\t.type\t" << (COFF::DT_FCN << COFF::N_BTSHFT)
<< ";\t.endef\n";
}
}
// Output linker support code for dllexported globals on windows.
if (!DLLExportedGlobals.empty() || !DLLExportedFns.empty()) {
OutStreamer.SwitchSection(TLOFCOFF.getCOFFSection(".section .drectve",
true,
if (Subtarget->isTargetCygMing()) {
// Necessary for dllexport support
std::vector<std::string> DLLExportedFns, DLLExportedGlobals;
TargetLoweringObjectFileCOFF &TLOFCOFF =
static_cast<TargetLoweringObjectFileCOFF&>(getObjFileLowering());
for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I)
if (I->hasDLLExportLinkage()) {
std::string Name = Mang->getMangledName(I);
COFFMMI.DecorateCygMingName(Name, I, *TM.getTargetData());
DLLExportedFns.push_back(Name);
}
for (Module::const_global_iterator I = M.global_begin(),
E = M.global_end(); I != E; ++I)
if (I->hasDLLExportLinkage()) {
std::string Name = Mang->getMangledName(I);
COFFMMI.DecorateCygMingName(Name, I, *TM.getTargetData());
DLLExportedGlobals.push_back(Mang->getMangledName(I));
}
// Output linker support code for dllexported globals on windows.
if (!DLLExportedGlobals.empty() || !DLLExportedFns.empty()) {
OutStreamer.SwitchSection(TLOFCOFF.getCOFFSection(".section .drectve",
true,
SectionKind::getMetadata()));
for (unsigned i = 0, e = DLLExportedGlobals.size(); i != e; ++i)
O << "\t.ascii \" -export:" << DLLExportedGlobals[i] << ",data\"\n";
for (unsigned i = 0, e = DLLExportedFns.size(); i != e; ++i)
O << "\t.ascii \" -export:" << DLLExportedFns[i] << "\"\n";
for (unsigned i = 0, e = DLLExportedGlobals.size(); i != e; ++i)
O << "\t.ascii \" -export:" << DLLExportedGlobals[i] << ",data\"\n";
for (unsigned i = 0, e = DLLExportedFns.size(); i != e; ++i)
O << "\t.ascii \" -export:" << DLLExportedFns[i] << "\"\n";
}
}
}
}