/// 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();
}
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()) {
+ 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();
+ 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()));
}
}
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;
- const MCSectionCOFF *S = cast<MCSectionCOFF>(
- getObjFileLowering().getSectionForConstant(Kind, C));
- if (MCSymbol *Sym = S->getCOMDATSymbol()) {
- if (Sym->isUndefined())
- OutStreamer.EmitSymbolAttribute(Sym, MCSA_Global);
- return Sym;
+ if (const MCSectionCOFF *S = dyn_cast<MCSectionCOFF>(
+ getObjFileLowering().getSectionForConstant(Kind, C))) {
+ if (MCSymbol *Sym = S->getCOMDATSymbol()) {
+ if (Sym->isUndefined())
+ OutStreamer->EmitSymbolAttribute(Sym, MCSA_Global);
+ return Sym;
+ }
}
}
}
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>();
+ MMI->getObjFileInfo<MachineModuleInfoMachO>();
// Output stubs for dynamically-linked functions.
MachineModuleInfoMachO::SymbolListTy Stubs;
MachO::S_ATTR_SELF_MODIFYING_CODE |
MachO::S_ATTR_PURE_INSTRUCTIONS,
5, SectionKind::getMetadata());
- OutStreamer.SwitchSection(TheSection);
+ 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.
OutContext.getMachOSection("__IMPORT", "__pointers",
MachO::S_NON_LAZY_SYMBOL_POINTERS,
SectionKind::getMetadata());
- OutStreamer.SwitchSection(TheSection);
+ 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();
OutContext.getMachOSection("__IMPORT", "__pointers",
MachO::S_NON_LAZY_SYMBOL_POINTERS,
SectionKind::getMetadata());
- OutStreamer.SwitchSection(TheSection);
+ 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();
// 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";
+ 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);
+ OutStreamer->EmitSymbolAttribute(S, MCSA_Global);
}
- if (Subtarget->isTargetCOFF()) {
+ if (TT.isOSBinFormatCOFF()) {
// Necessary for dllexport support
std::vector<const MCSymbol*> DLLExportedFns, DLLExportedGlobals;
for (const auto &Function : M)
- if (Function.hasDLLExportStorageClass())
+ if (Function.hasDLLExportStorageClass() && !Function.isDeclaration())
DLLExportedFns.push_back(getSymbol(&Function));
for (const auto &Global : M.globals())
- if (Global.hasDLLExportStorageClass())
+ if (Global.hasDLLExportStorageClass() && !Global.isDeclaration())
DLLExportedGlobals.push_back(getSymbol(&Global));
for (const auto &Alias : M.aliases()) {
const TargetLoweringObjectFileCOFF &TLOFCOFF =
static_cast<const TargetLoweringObjectFileCOFF&>(getObjFileLowering());
- OutStreamer.SwitchSection(TLOFCOFF.getDrectveSection());
+ OutStreamer->SwitchSection(TLOFCOFF.getDrectveSection());
for (auto & Symbol : DLLExportedGlobals)
GenerateExportDirective(Symbol, /*IsData=*/true);
}
}
- 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();
- }
}
//===----------------------------------------------------------------------===//
projects / oota-llvm.git / blobdiff