#include "llvm/DerivedTypes.h"
#include "llvm/Function.h"
#include "llvm/GlobalVariable.h"
+#include "llvm/Module.h"
#include "llvm/CodeGen/MachineModuleInfoImpls.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Target/Mangler.h"
-#include "llvm/Target/TargetData.h"
+#include "llvm/DataLayout.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Support/Dwarf.h"
// ELF
//===----------------------------------------------------------------------===//
-void TargetLoweringObjectFileELF::Initialize(MCContext &Ctx,
- const TargetMachine &TM) {
- TargetLoweringObjectFile::Initialize(Ctx, TM);
-
- BSSSection =
- getContext().getELFSection(".bss", ELF::SHT_NOBITS,
- ELF::SHF_WRITE |ELF::SHF_ALLOC,
- SectionKind::getBSS());
-
- TextSection =
- getContext().getELFSection(".text", ELF::SHT_PROGBITS,
- ELF::SHF_EXECINSTR |
- ELF::SHF_ALLOC,
- SectionKind::getText());
-
- DataSection =
- getContext().getELFSection(".data", ELF::SHT_PROGBITS,
- ELF::SHF_WRITE |ELF::SHF_ALLOC,
- SectionKind::getDataRel());
-
- ReadOnlySection =
- getContext().getELFSection(".rodata", ELF::SHT_PROGBITS,
- ELF::SHF_ALLOC,
- SectionKind::getReadOnly());
-
- TLSDataSection =
- getContext().getELFSection(".tdata", ELF::SHT_PROGBITS,
- ELF::SHF_ALLOC | ELF::SHF_TLS |
- ELF::SHF_WRITE,
- SectionKind::getThreadData());
-
- TLSBSSSection =
- getContext().getELFSection(".tbss", ELF::SHT_NOBITS,
- ELF::SHF_ALLOC | ELF::SHF_TLS |
- ELF::SHF_WRITE,
- SectionKind::getThreadBSS());
-
- DataRelSection =
- getContext().getELFSection(".data.rel", ELF::SHT_PROGBITS,
- ELF::SHF_ALLOC |ELF::SHF_WRITE,
- SectionKind::getDataRel());
-
- DataRelLocalSection =
- getContext().getELFSection(".data.rel.local", ELF::SHT_PROGBITS,
- ELF::SHF_ALLOC |ELF::SHF_WRITE,
- SectionKind::getDataRelLocal());
-
- DataRelROSection =
- getContext().getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
- ELF::SHF_ALLOC |ELF::SHF_WRITE,
- SectionKind::getReadOnlyWithRel());
-
- DataRelROLocalSection =
- getContext().getELFSection(".data.rel.ro.local", ELF::SHT_PROGBITS,
- ELF::SHF_ALLOC |ELF::SHF_WRITE,
- SectionKind::getReadOnlyWithRelLocal());
-
- MergeableConst4Section =
- getContext().getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
- ELF::SHF_ALLOC |ELF::SHF_MERGE,
- SectionKind::getMergeableConst4());
-
- MergeableConst8Section =
- getContext().getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
- ELF::SHF_ALLOC |ELF::SHF_MERGE,
- SectionKind::getMergeableConst8());
-
- MergeableConst16Section =
- getContext().getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
- ELF::SHF_ALLOC |ELF::SHF_MERGE,
- SectionKind::getMergeableConst16());
-
- StaticCtorSection =
- getContext().getELFSection(".ctors", ELF::SHT_PROGBITS,
- ELF::SHF_ALLOC |ELF::SHF_WRITE,
- SectionKind::getDataRel());
-
- StaticDtorSection =
- getContext().getELFSection(".dtors", ELF::SHT_PROGBITS,
- ELF::SHF_ALLOC |ELF::SHF_WRITE,
- SectionKind::getDataRel());
-
- // Exception Handling Sections.
-
- // FIXME: We're emitting LSDA info into a readonly section on ELF, even though
- // it contains relocatable pointers. In PIC mode, this is probably a big
- // runtime hit for C++ apps. Either the contents of the LSDA need to be
- // adjusted or this should be a data section.
- LSDASection =
- getContext().getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
- ELF::SHF_ALLOC,
- SectionKind::getReadOnly());
- // Debug Info Sections.
- DwarfAbbrevSection =
- getContext().getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
- SectionKind::getMetadata());
- DwarfInfoSection =
- getContext().getELFSection(".debug_info", ELF::SHT_PROGBITS, 0,
- SectionKind::getMetadata());
- DwarfLineSection =
- getContext().getELFSection(".debug_line", ELF::SHT_PROGBITS, 0,
- SectionKind::getMetadata());
- DwarfFrameSection =
- getContext().getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0,
- SectionKind::getMetadata());
- DwarfPubNamesSection =
- getContext().getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0,
- SectionKind::getMetadata());
- DwarfPubTypesSection =
- getContext().getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0,
- SectionKind::getMetadata());
- DwarfStrSection =
- getContext().getELFSection(".debug_str", ELF::SHT_PROGBITS, 0,
- SectionKind::getMetadata());
- DwarfLocSection =
- getContext().getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0,
- SectionKind::getMetadata());
- DwarfARangesSection =
- getContext().getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0,
- SectionKind::getMetadata());
- DwarfRangesSection =
- getContext().getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0,
- SectionKind::getMetadata());
- DwarfMacroInfoSection =
- getContext().getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0,
- SectionKind::getMetadata());
-}
-
-const MCSection *TargetLoweringObjectFileELF::getEHFrameSection() const {
- return getContext().getELFSection(".eh_frame", ELF::SHT_PROGBITS,
- ELF::SHF_ALLOC,
- SectionKind::getDataRel());
-}
-
MCSymbol *
TargetLoweringObjectFileELF::getCFIPersonalitySymbol(const GlobalValue *GV,
Mangler *Mang,
report_fatal_error("We do not support this DWARF encoding yet!");
case dwarf::DW_EH_PE_absptr:
return Mang->getSymbol(GV);
- break;
case dwarf::DW_EH_PE_pcrel: {
- Twine FullName = StringRef("DW.ref.") + Mang->getSymbol(GV)->getName();
- return getContext().GetOrCreateSymbol(FullName);
- break;
+ return getContext().GetOrCreateSymbol(StringRef("DW.ref.") +
+ Mang->getSymbol(GV)->getName());
}
}
}
void TargetLoweringObjectFileELF::emitPersonalityValue(MCStreamer &Streamer,
const TargetMachine &TM,
const MCSymbol *Sym) const {
- Twine FullName = StringRef("DW.ref.") + Sym->getName();
- MCSymbol *Label = getContext().GetOrCreateSymbol(FullName);
+ SmallString<64> NameData("DW.ref.");
+ NameData += Sym->getName();
+ MCSymbol *Label = getContext().GetOrCreateSymbol(NameData);
Streamer.EmitSymbolAttribute(Label, MCSA_Hidden);
Streamer.EmitSymbolAttribute(Label, MCSA_Weak);
- Twine SectionName = StringRef(".data.") + Label->getName();
- SmallString<64> NameData;
- SectionName.toVector(NameData);
+ StringRef Prefix = ".data.";
+ NameData.insert(NameData.begin(), Prefix.begin(), Prefix.end());
unsigned Flags = ELF::SHF_ALLOC | ELF::SHF_WRITE | ELF::SHF_GROUP;
const MCSection *Sec = getContext().getELFSection(NameData,
ELF::SHT_PROGBITS,
Flags,
SectionKind::getDataRel(),
0, Label->getName());
+ unsigned Size = TM.getDataLayout()->getPointerSize();
Streamer.SwitchSection(Sec);
- Streamer.EmitValueToAlignment(8);
+ Streamer.EmitValueToAlignment(TM.getDataLayout()->getPointerABIAlignment());
Streamer.EmitSymbolAttribute(Label, MCSA_ELF_TypeObject);
- const MCExpr *E = MCConstantExpr::Create(8, getContext());
+ const MCExpr *E = MCConstantExpr::Create(Size, getContext());
Streamer.EmitELFSize(Label, E);
Streamer.EmitLabel(Label);
- unsigned Size = TM.getTargetData()->getPointerSize();
Streamer.EmitSymbolValue(Sym, Size);
}
// N.B.: The defaults used in here are no the same ones used in MC.
// We follow gcc, MC follows gas. For example, given ".section .eh_frame",
// both gas and MC will produce a section with no flags. Given
- // section(".eh_frame") gcc will produce
- // .section .eh_frame,"a",@progbits
+ // section(".eh_frame") gcc will produce:
+ //
+ // .section .eh_frame,"a",@progbits
if (Name.empty() || Name[0] != '.') return K;
// Some lame default implementation based on some magic section names.
Name.startswith(".llvm.linkonce.tb."))
return SectionKind::getThreadBSS();
- if (Name == ".eh_frame")
- return SectionKind::getReadOnlyWithRel();
-
return K;
}
if (K.isText())
Flags |= ELF::SHF_EXECINSTR;
- if (K.isWriteable() && !K.isReadOnlyWithRel())
+ if (K.isWriteable())
Flags |= ELF::SHF_WRITE;
if (K.isThreadLocal())
static const char *getSectionPrefixForGlobal(SectionKind Kind) {
if (Kind.isText()) return ".text.";
if (Kind.isReadOnly()) return ".rodata.";
+ if (Kind.isBSS()) return ".bss.";
if (Kind.isThreadData()) return ".tdata.";
if (Kind.isThreadBSS()) return ".tbss.";
// If this global is linkonce/weak and the target handles this by emitting it
// into a 'uniqued' section name, create and return the section now.
if ((GV->isWeakForLinker() || EmitUniquedSection) &&
- !Kind.isCommon() && !Kind.isBSS()) {
+ !Kind.isCommon()) {
const char *Prefix;
Prefix = getSectionPrefixForGlobal(Kind);
// FIXME: this is getting the alignment of the character, not the
// alignment of the global!
unsigned Align =
- TM.getTargetData()->getPreferredAlignment(cast<GlobalVariable>(GV));
+ TM.getDataLayout()->getPreferredAlignment(cast<GlobalVariable>(GV));
const char *SizeSpec = ".rodata.str1.";
if (Kind.isMergeable2ByteCString())
getExprForDwarfGlobalReference(GV, Mang, MMI, Encoding, Streamer);
}
+const MCSection *
+TargetLoweringObjectFileELF::getStaticCtorSection(unsigned Priority) const {
+ // The default scheme is .ctor / .dtor, so we have to invert the priority
+ // numbering.
+ if (Priority == 65535)
+ return StaticCtorSection;
+
+ if (UseInitArray) {
+ std::string Name = std::string(".init_array.") + utostr(Priority);
+ return getContext().getELFSection(Name, ELF::SHT_INIT_ARRAY,
+ ELF::SHF_ALLOC | ELF::SHF_WRITE,
+ SectionKind::getDataRel());
+ } else {
+ std::string Name = std::string(".ctors.") + utostr(65535 - Priority);
+ return getContext().getELFSection(Name, ELF::SHT_PROGBITS,
+ ELF::SHF_ALLOC |ELF::SHF_WRITE,
+ SectionKind::getDataRel());
+ }
+}
+
+const MCSection *
+TargetLoweringObjectFileELF::getStaticDtorSection(unsigned Priority) const {
+ // The default scheme is .ctor / .dtor, so we have to invert the priority
+ // numbering.
+ if (Priority == 65535)
+ return StaticDtorSection;
+
+ if (UseInitArray) {
+ std::string Name = std::string(".fini_array.") + utostr(Priority);
+ return getContext().getELFSection(Name, ELF::SHT_FINI_ARRAY,
+ ELF::SHF_ALLOC | ELF::SHF_WRITE,
+ SectionKind::getDataRel());
+ } else {
+ std::string Name = std::string(".dtors.") + utostr(65535 - Priority);
+ return getContext().getELFSection(Name, ELF::SHT_PROGBITS,
+ ELF::SHF_ALLOC |ELF::SHF_WRITE,
+ SectionKind::getDataRel());
+ }
+}
+
+void
+TargetLoweringObjectFileELF::InitializeELF(bool UseInitArray_) {
+ UseInitArray = UseInitArray_;
+ if (!UseInitArray)
+ return;
+
+ StaticCtorSection =
+ getContext().getELFSection(".init_array", ELF::SHT_INIT_ARRAY,
+ ELF::SHF_WRITE |
+ ELF::SHF_ALLOC,
+ SectionKind::getDataRel());
+ StaticDtorSection =
+ getContext().getELFSection(".fini_array", ELF::SHT_FINI_ARRAY,
+ ELF::SHF_WRITE |
+ ELF::SHF_ALLOC,
+ SectionKind::getDataRel());
+}
+
//===----------------------------------------------------------------------===//
// MachO
//===----------------------------------------------------------------------===//
-void TargetLoweringObjectFileMachO::Initialize(MCContext &Ctx,
- const TargetMachine &TM) {
- IsFunctionEHFrameSymbolPrivate = false;
- SupportsWeakOmittedEHFrame = false;
-
- // .comm doesn't support alignment before Leopard.
- Triple T(((LLVMTargetMachine&)TM).getTargetTriple());
- if (T.isMacOSX() && T.isMacOSXVersionLT(10, 5))
- CommDirectiveSupportsAlignment = false;
-
- TargetLoweringObjectFile::Initialize(Ctx, TM);
-
- TextSection // .text
- = getContext().getMachOSection("__TEXT", "__text",
- MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
- SectionKind::getText());
- DataSection // .data
- = getContext().getMachOSection("__DATA", "__data", 0,
- SectionKind::getDataRel());
-
- TLSDataSection // .tdata
- = getContext().getMachOSection("__DATA", "__thread_data",
- MCSectionMachO::S_THREAD_LOCAL_REGULAR,
- SectionKind::getDataRel());
- TLSBSSSection // .tbss
- = getContext().getMachOSection("__DATA", "__thread_bss",
- MCSectionMachO::S_THREAD_LOCAL_ZEROFILL,
- SectionKind::getThreadBSS());
-
- // TODO: Verify datarel below.
- TLSTLVSection // .tlv
- = getContext().getMachOSection("__DATA", "__thread_vars",
- MCSectionMachO::S_THREAD_LOCAL_VARIABLES,
- SectionKind::getDataRel());
-
- TLSThreadInitSection
- = getContext().getMachOSection("__DATA", "__thread_init",
- MCSectionMachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
- SectionKind::getDataRel());
-
- CStringSection // .cstring
- = getContext().getMachOSection("__TEXT", "__cstring",
- MCSectionMachO::S_CSTRING_LITERALS,
- SectionKind::getMergeable1ByteCString());
- UStringSection
- = getContext().getMachOSection("__TEXT","__ustring", 0,
- SectionKind::getMergeable2ByteCString());
- FourByteConstantSection // .literal4
- = getContext().getMachOSection("__TEXT", "__literal4",
- MCSectionMachO::S_4BYTE_LITERALS,
- SectionKind::getMergeableConst4());
- EightByteConstantSection // .literal8
- = getContext().getMachOSection("__TEXT", "__literal8",
- MCSectionMachO::S_8BYTE_LITERALS,
- SectionKind::getMergeableConst8());
-
- // ld_classic doesn't support .literal16 in 32-bit mode, and ld64 falls back
- // to using it in -static mode.
- SixteenByteConstantSection = 0;
- if (TM.getRelocationModel() != Reloc::Static &&
- TM.getTargetData()->getPointerSize() == 32)
- SixteenByteConstantSection = // .literal16
- getContext().getMachOSection("__TEXT", "__literal16",
- MCSectionMachO::S_16BYTE_LITERALS,
- SectionKind::getMergeableConst16());
-
- ReadOnlySection // .const
- = getContext().getMachOSection("__TEXT", "__const", 0,
- SectionKind::getReadOnly());
-
- TextCoalSection
- = getContext().getMachOSection("__TEXT", "__textcoal_nt",
- MCSectionMachO::S_COALESCED |
- MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
- SectionKind::getText());
- ConstTextCoalSection
- = getContext().getMachOSection("__TEXT", "__const_coal",
- MCSectionMachO::S_COALESCED,
- SectionKind::getReadOnly());
- ConstDataSection // .const_data
- = getContext().getMachOSection("__DATA", "__const", 0,
- SectionKind::getReadOnlyWithRel());
- DataCoalSection
- = getContext().getMachOSection("__DATA","__datacoal_nt",
- MCSectionMachO::S_COALESCED,
- SectionKind::getDataRel());
- DataCommonSection
- = getContext().getMachOSection("__DATA","__common",
- MCSectionMachO::S_ZEROFILL,
- SectionKind::getBSS());
- DataBSSSection
- = getContext().getMachOSection("__DATA","__bss", MCSectionMachO::S_ZEROFILL,
- SectionKind::getBSS());
-
-
- LazySymbolPointerSection
- = getContext().getMachOSection("__DATA", "__la_symbol_ptr",
- MCSectionMachO::S_LAZY_SYMBOL_POINTERS,
- SectionKind::getMetadata());
- NonLazySymbolPointerSection
- = getContext().getMachOSection("__DATA", "__nl_symbol_ptr",
- MCSectionMachO::S_NON_LAZY_SYMBOL_POINTERS,
- SectionKind::getMetadata());
-
- if (TM.getRelocationModel() == Reloc::Static) {
- StaticCtorSection
- = getContext().getMachOSection("__TEXT", "__constructor", 0,
- SectionKind::getDataRel());
- StaticDtorSection
- = getContext().getMachOSection("__TEXT", "__destructor", 0,
- SectionKind::getDataRel());
- } else {
- StaticCtorSection
- = getContext().getMachOSection("__DATA", "__mod_init_func",
- MCSectionMachO::S_MOD_INIT_FUNC_POINTERS,
- SectionKind::getDataRel());
- StaticDtorSection
- = getContext().getMachOSection("__DATA", "__mod_term_func",
- MCSectionMachO::S_MOD_TERM_FUNC_POINTERS,
- SectionKind::getDataRel());
+/// emitModuleFlags - Emit the module flags that specify the garbage collection
+/// information.
+void TargetLoweringObjectFileMachO::
+emitModuleFlags(MCStreamer &Streamer,
+ ArrayRef<Module::ModuleFlagEntry> ModuleFlags,
+ Mangler *Mang, const TargetMachine &TM) const {
+ unsigned VersionVal = 0;
+ unsigned ImageInfoFlags = 0;
+ StringRef SectionVal;
+
+ for (ArrayRef<Module::ModuleFlagEntry>::iterator
+ i = ModuleFlags.begin(), e = ModuleFlags.end(); i != e; ++i) {
+ const Module::ModuleFlagEntry &MFE = *i;
+
+ // Ignore flags with 'Require' behavior.
+ if (MFE.Behavior == Module::Require)
+ continue;
+
+ StringRef Key = MFE.Key->getString();
+ Value *Val = MFE.Val;
+
+ if (Key == "Objective-C Image Info Version")
+ VersionVal = cast<ConstantInt>(Val)->getZExtValue();
+ else if (Key == "Objective-C Garbage Collection" ||
+ Key == "Objective-C GC Only" ||
+ Key == "Objective-C Is Simulated")
+ ImageInfoFlags |= cast<ConstantInt>(Val)->getZExtValue();
+ else if (Key == "Objective-C Image Info Section")
+ SectionVal = cast<MDString>(Val)->getString();
}
- // Exception Handling.
- LSDASection = getContext().getMachOSection("__TEXT", "__gcc_except_tab", 0,
- SectionKind::getReadOnlyWithRel());
- // Debug Information.
- DwarfAbbrevSection =
- getContext().getMachOSection("__DWARF", "__debug_abbrev",
- MCSectionMachO::S_ATTR_DEBUG,
- SectionKind::getMetadata());
- DwarfInfoSection =
- getContext().getMachOSection("__DWARF", "__debug_info",
- MCSectionMachO::S_ATTR_DEBUG,
- SectionKind::getMetadata());
- DwarfLineSection =
- getContext().getMachOSection("__DWARF", "__debug_line",
- MCSectionMachO::S_ATTR_DEBUG,
- SectionKind::getMetadata());
- DwarfFrameSection =
- getContext().getMachOSection("__DWARF", "__debug_frame",
- MCSectionMachO::S_ATTR_DEBUG,
- SectionKind::getMetadata());
- DwarfPubNamesSection =
- getContext().getMachOSection("__DWARF", "__debug_pubnames",
- MCSectionMachO::S_ATTR_DEBUG,
- SectionKind::getMetadata());
- DwarfPubTypesSection =
- getContext().getMachOSection("__DWARF", "__debug_pubtypes",
- MCSectionMachO::S_ATTR_DEBUG,
- SectionKind::getMetadata());
- DwarfStrSection =
- getContext().getMachOSection("__DWARF", "__debug_str",
- MCSectionMachO::S_ATTR_DEBUG,
- SectionKind::getMetadata());
- DwarfLocSection =
- getContext().getMachOSection("__DWARF", "__debug_loc",
- MCSectionMachO::S_ATTR_DEBUG,
- SectionKind::getMetadata());
- DwarfARangesSection =
- getContext().getMachOSection("__DWARF", "__debug_aranges",
- MCSectionMachO::S_ATTR_DEBUG,
- SectionKind::getMetadata());
- DwarfRangesSection =
- getContext().getMachOSection("__DWARF", "__debug_ranges",
- MCSectionMachO::S_ATTR_DEBUG,
- SectionKind::getMetadata());
- DwarfMacroInfoSection =
- getContext().getMachOSection("__DWARF", "__debug_macinfo",
- MCSectionMachO::S_ATTR_DEBUG,
- SectionKind::getMetadata());
- DwarfDebugInlineSection =
- getContext().getMachOSection("__DWARF", "__debug_inlined",
- MCSectionMachO::S_ATTR_DEBUG,
- SectionKind::getMetadata());
-
- TLSExtraDataSection = TLSTLVSection;
-}
+ // The section is mandatory. If we don't have it, then we don't have GC info.
+ if (SectionVal.empty()) return;
+
+ StringRef Segment, Section;
+ unsigned TAA = 0, StubSize = 0;
+ bool TAAParsed;
+ std::string ErrorCode =
+ MCSectionMachO::ParseSectionSpecifier(SectionVal, Segment, Section,
+ TAA, TAAParsed, StubSize);
+ if (!ErrorCode.empty())
+ // If invalid, report the error with report_fatal_error.
+ report_fatal_error("Invalid section specifier '" + Section + "': " +
+ ErrorCode + ".");
-const MCSection *TargetLoweringObjectFileMachO::getEHFrameSection() const {
- return getContext().getMachOSection("__TEXT", "__eh_frame",
- MCSectionMachO::S_COALESCED |
- MCSectionMachO::S_ATTR_NO_TOC |
- MCSectionMachO::S_ATTR_STRIP_STATIC_SYMS |
- MCSectionMachO::S_ATTR_LIVE_SUPPORT,
- SectionKind::getReadOnly());
+ // Get the section.
+ const MCSectionMachO *S =
+ getContext().getMachOSection(Segment, Section, TAA, StubSize,
+ SectionKind::getDataNoRel());
+ Streamer.SwitchSection(S);
+ Streamer.EmitLabel(getContext().
+ GetOrCreateSymbol(StringRef("L_OBJC_IMAGE_INFO")));
+ Streamer.EmitIntValue(VersionVal, 4);
+ Streamer.EmitIntValue(ImageInfoFlags, 4);
+ Streamer.AddBlankLine();
}
const MCSection *TargetLoweringObjectFileMachO::
TAA, TAAParsed, StubSize);
if (!ErrorCode.empty()) {
// If invalid, report the error with report_fatal_error.
- report_fatal_error("Global variable '" + GV->getNameStr() +
- "' has an invalid section specifier '" + GV->getSection()+
- "': " + ErrorCode + ".");
- // Fall back to dropping it into the data section.
- return DataSection;
+ report_fatal_error("Global variable '" + GV->getName() +
+ "' has an invalid section specifier '" +
+ GV->getSection() + "': " + ErrorCode + ".");
}
// Get the section.
// to reject it here.
if (S->getTypeAndAttributes() != TAA || S->getStubSize() != StubSize) {
// If invalid, report the error with report_fatal_error.
- report_fatal_error("Global variable '" + GV->getNameStr() +
- "' section type or attributes does not match previous"
- " section specifier");
+ report_fatal_error("Global variable '" + GV->getName() +
+ "' section type or attributes does not match previous"
+ " section specifier");
}
return S;
// FIXME: Alignment check should be handled by section classifier.
if (Kind.isMergeable1ByteCString() &&
- TM.getTargetData()->getPreferredAlignment(cast<GlobalVariable>(GV)) < 32)
+ TM.getDataLayout()->getPreferredAlignment(cast<GlobalVariable>(GV)) < 32)
return CStringSection;
// Do not put 16-bit arrays in the UString section if they have an
// externally visible label, this runs into issues with certain linker
// versions.
if (Kind.isMergeable2ByteCString() && !GV->hasExternalLinkage() &&
- TM.getTargetData()->getPreferredAlignment(cast<GlobalVariable>(GV)) < 32)
+ TM.getDataLayout()->getPreferredAlignment(cast<GlobalVariable>(GV)) < 32)
return UStringSection;
if (Kind.isMergeableConst()) {
// Add information about the stub reference to MachOMMI so that the stub
// gets emitted by the asmprinter.
MCSymbol *SSym = getContext().GetOrCreateSymbol(Name.str());
- MachineModuleInfoImpl::StubValueTy &StubSym = MachOMMI.getGVStubEntry(SSym);
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ GV->hasHiddenVisibility() ? MachOMMI.getHiddenGVStubEntry(SSym) :
+ MachOMMI.getGVStubEntry(SSym);
if (StubSym.getPointer() == 0) {
MCSymbol *Sym = Mang->getSymbol(GV);
StubSym = MachineModuleInfoImpl::StubValueTy(Sym, !GV->hasLocalLinkage());
return SSym;
}
-unsigned TargetLoweringObjectFileMachO::getPersonalityEncoding() const {
- return DW_EH_PE_indirect | DW_EH_PE_pcrel | DW_EH_PE_sdata4;
-}
-
-unsigned TargetLoweringObjectFileMachO::getLSDAEncoding() const {
- return DW_EH_PE_pcrel;
-}
-
-unsigned TargetLoweringObjectFileMachO::getFDEEncoding(bool CFI) const {
- return DW_EH_PE_pcrel;
-}
-
-unsigned TargetLoweringObjectFileMachO::getTTypeEncoding() const {
- return DW_EH_PE_indirect | DW_EH_PE_pcrel | DW_EH_PE_sdata4;
-}
-
//===----------------------------------------------------------------------===//
// COFF
//===----------------------------------------------------------------------===//
-void TargetLoweringObjectFileCOFF::Initialize(MCContext &Ctx,
- const TargetMachine &TM) {
- TargetLoweringObjectFile::Initialize(Ctx, TM);
- TextSection =
- getContext().getCOFFSection(".text",
- COFF::IMAGE_SCN_CNT_CODE |
- COFF::IMAGE_SCN_MEM_EXECUTE |
- COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getText());
- DataSection =
- getContext().getCOFFSection(".data",
- COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
- COFF::IMAGE_SCN_MEM_READ |
- COFF::IMAGE_SCN_MEM_WRITE,
- SectionKind::getDataRel());
- ReadOnlySection =
- getContext().getCOFFSection(".rdata",
- COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
- COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getReadOnly());
- StaticCtorSection =
- getContext().getCOFFSection(".ctors",
- COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
- COFF::IMAGE_SCN_MEM_READ |
- COFF::IMAGE_SCN_MEM_WRITE,
- SectionKind::getDataRel());
- StaticDtorSection =
- getContext().getCOFFSection(".dtors",
- COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
- COFF::IMAGE_SCN_MEM_READ |
- COFF::IMAGE_SCN_MEM_WRITE,
- SectionKind::getDataRel());
-
- // FIXME: We're emitting LSDA info into a readonly section on COFF, even
- // though it contains relocatable pointers. In PIC mode, this is probably a
- // big runtime hit for C++ apps. Either the contents of the LSDA need to be
- // adjusted or this should be a data section.
- LSDASection =
- getContext().getCOFFSection(".gcc_except_table",
- COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
- COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getReadOnly());
- // Debug info.
- DwarfAbbrevSection =
- getContext().getCOFFSection(".debug_abbrev",
- COFF::IMAGE_SCN_MEM_DISCARDABLE |
- COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getMetadata());
- DwarfInfoSection =
- getContext().getCOFFSection(".debug_info",
- COFF::IMAGE_SCN_MEM_DISCARDABLE |
- COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getMetadata());
- DwarfLineSection =
- getContext().getCOFFSection(".debug_line",
- COFF::IMAGE_SCN_MEM_DISCARDABLE |
- COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getMetadata());
- DwarfFrameSection =
- getContext().getCOFFSection(".debug_frame",
- COFF::IMAGE_SCN_MEM_DISCARDABLE |
- COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getMetadata());
- DwarfPubNamesSection =
- getContext().getCOFFSection(".debug_pubnames",
- COFF::IMAGE_SCN_MEM_DISCARDABLE |
- COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getMetadata());
- DwarfPubTypesSection =
- getContext().getCOFFSection(".debug_pubtypes",
- COFF::IMAGE_SCN_MEM_DISCARDABLE |
- COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getMetadata());
- DwarfStrSection =
- getContext().getCOFFSection(".debug_str",
- COFF::IMAGE_SCN_MEM_DISCARDABLE |
- COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getMetadata());
- DwarfLocSection =
- getContext().getCOFFSection(".debug_loc",
- COFF::IMAGE_SCN_MEM_DISCARDABLE |
- COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getMetadata());
- DwarfARangesSection =
- getContext().getCOFFSection(".debug_aranges",
- COFF::IMAGE_SCN_MEM_DISCARDABLE |
- COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getMetadata());
- DwarfRangesSection =
- getContext().getCOFFSection(".debug_ranges",
- COFF::IMAGE_SCN_MEM_DISCARDABLE |
- COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getMetadata());
- DwarfMacroInfoSection =
- getContext().getCOFFSection(".debug_macinfo",
- COFF::IMAGE_SCN_MEM_DISCARDABLE |
- COFF::IMAGE_SCN_MEM_READ,
- SectionKind::getMetadata());
-
- DrectveSection =
- getContext().getCOFFSection(".drectve",
- COFF::IMAGE_SCN_LNK_INFO,
- SectionKind::getMetadata());
-
- PDataSection =
- getContext().getCOFFSection(".pdata",
- COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
- COFF::IMAGE_SCN_MEM_READ |
- COFF::IMAGE_SCN_MEM_WRITE,
- SectionKind::getDataRel());
-
- XDataSection =
- getContext().getCOFFSection(".xdata",
- COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
- COFF::IMAGE_SCN_MEM_READ |
- COFF::IMAGE_SCN_MEM_WRITE,
- SectionKind::getDataRel());
-}
-
-const MCSection *TargetLoweringObjectFileCOFF::getEHFrameSection() const {
- return getContext().getCOFFSection(".eh_frame",
- COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
- COFF::IMAGE_SCN_MEM_READ |
- COFF::IMAGE_SCN_MEM_WRITE,
- SectionKind::getDataRel());
-}
-
-
static unsigned
getCOFFSectionFlags(SectionKind K) {
unsigned Flags = 0;
COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
COFF::IMAGE_SCN_MEM_READ |
COFF::IMAGE_SCN_MEM_WRITE;
+ else if (K.isThreadLocal())
+ Flags |=
+ COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+ COFF::IMAGE_SCN_MEM_READ |
+ COFF::IMAGE_SCN_MEM_WRITE;
else if (K.isReadOnly())
Flags |=
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
return ".text$";
if (Kind.isBSS ())
return ".bss$";
+ if (Kind.isThreadLocal())
+ return ".tls$";
if (Kind.isWriteable())
return ".data$";
return ".rdata$";
const MCSection *TargetLoweringObjectFileCOFF::
SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler *Mang, const TargetMachine &TM) const {
- assert(!Kind.isThreadLocal() && "Doesn't support TLS");
// If this global is linkonce/weak and the target handles this by emitting it
// into a 'uniqued' section name, create and return the section now.
if (Kind.isText())
return getTextSection();
+ if (Kind.isThreadLocal())
+ return getTLSDataSection();
+
return getDataSection();
}
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