mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-26 23:29:22 +00:00
This create a MCSymbolELF class and moves SymbolSize since only ELF needs a size expression. This reduces the size of MCSymbol from 56 to 48 bytes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238801 91177308-0d34-0410-b5e6-96231b3b80d8
1048 lines
36 KiB
C++
1048 lines
36 KiB
C++
//===-- llvm/CodeGen/TargetLoweringObjectFileImpl.cpp - Object File Info --===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements classes used to handle lowerings specific to common
|
|
// object file formats.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
|
|
#include "llvm/ADT/SmallString.h"
|
|
#include "llvm/ADT/StringExtras.h"
|
|
#include "llvm/ADT/Triple.h"
|
|
#include "llvm/CodeGen/MachineModuleInfoImpls.h"
|
|
#include "llvm/IR/Constants.h"
|
|
#include "llvm/IR/DataLayout.h"
|
|
#include "llvm/IR/DerivedTypes.h"
|
|
#include "llvm/IR/Function.h"
|
|
#include "llvm/IR/GlobalVariable.h"
|
|
#include "llvm/IR/Mangler.h"
|
|
#include "llvm/IR/Module.h"
|
|
#include "llvm/MC/MCContext.h"
|
|
#include "llvm/MC/MCExpr.h"
|
|
#include "llvm/MC/MCSectionCOFF.h"
|
|
#include "llvm/MC/MCSectionELF.h"
|
|
#include "llvm/MC/MCSectionMachO.h"
|
|
#include "llvm/MC/MCStreamer.h"
|
|
#include "llvm/MC/MCSymbolELF.h"
|
|
#include "llvm/MC/MCValue.h"
|
|
#include "llvm/Support/Dwarf.h"
|
|
#include "llvm/Support/ELF.h"
|
|
#include "llvm/Support/ErrorHandling.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
#include "llvm/Target/TargetLowering.h"
|
|
#include "llvm/Target/TargetMachine.h"
|
|
#include "llvm/Target/TargetSubtargetInfo.h"
|
|
using namespace llvm;
|
|
using namespace dwarf;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// ELF
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
MCSymbol *TargetLoweringObjectFileELF::getCFIPersonalitySymbol(
|
|
const GlobalValue *GV, Mangler &Mang, const TargetMachine &TM,
|
|
MachineModuleInfo *MMI) const {
|
|
unsigned Encoding = getPersonalityEncoding();
|
|
if ((Encoding & 0x80) == dwarf::DW_EH_PE_indirect)
|
|
return getContext().getOrCreateSymbol(StringRef("DW.ref.") +
|
|
TM.getSymbol(GV, Mang)->getName());
|
|
if ((Encoding & 0x70) == dwarf::DW_EH_PE_absptr)
|
|
return TM.getSymbol(GV, Mang);
|
|
report_fatal_error("We do not support this DWARF encoding yet!");
|
|
}
|
|
|
|
void TargetLoweringObjectFileELF::emitPersonalityValue(MCStreamer &Streamer,
|
|
const TargetMachine &TM,
|
|
const MCSymbol *Sym) const {
|
|
SmallString<64> NameData("DW.ref.");
|
|
NameData += Sym->getName();
|
|
MCSymbolELF *Label =
|
|
cast<MCSymbolELF>(getContext().getOrCreateSymbol(NameData));
|
|
Streamer.EmitSymbolAttribute(Label, MCSA_Hidden);
|
|
Streamer.EmitSymbolAttribute(Label, MCSA_Weak);
|
|
StringRef Prefix = ".data.";
|
|
NameData.insert(NameData.begin(), Prefix.begin(), Prefix.end());
|
|
unsigned Flags = ELF::SHF_ALLOC | ELF::SHF_WRITE | ELF::SHF_GROUP;
|
|
MCSection *Sec = getContext().getELFSection(NameData, ELF::SHT_PROGBITS,
|
|
Flags, 0, Label->getName());
|
|
unsigned Size = TM.getDataLayout()->getPointerSize();
|
|
Streamer.SwitchSection(Sec);
|
|
Streamer.EmitValueToAlignment(TM.getDataLayout()->getPointerABIAlignment());
|
|
Streamer.EmitSymbolAttribute(Label, MCSA_ELF_TypeObject);
|
|
const MCExpr *E = MCConstantExpr::create(Size, getContext());
|
|
Streamer.emitELFSize(Label, E);
|
|
Streamer.EmitLabel(Label);
|
|
|
|
Streamer.EmitSymbolValue(Sym, Size);
|
|
}
|
|
|
|
const MCExpr *TargetLoweringObjectFileELF::getTTypeGlobalReference(
|
|
const GlobalValue *GV, unsigned Encoding, Mangler &Mang,
|
|
const TargetMachine &TM, MachineModuleInfo *MMI,
|
|
MCStreamer &Streamer) const {
|
|
|
|
if (Encoding & dwarf::DW_EH_PE_indirect) {
|
|
MachineModuleInfoELF &ELFMMI = MMI->getObjFileInfo<MachineModuleInfoELF>();
|
|
|
|
MCSymbol *SSym = getSymbolWithGlobalValueBase(GV, ".DW.stub", Mang, TM);
|
|
|
|
// Add information about the stub reference to ELFMMI so that the stub
|
|
// gets emitted by the asmprinter.
|
|
MachineModuleInfoImpl::StubValueTy &StubSym = ELFMMI.getGVStubEntry(SSym);
|
|
if (!StubSym.getPointer()) {
|
|
MCSymbol *Sym = TM.getSymbol(GV, Mang);
|
|
StubSym = MachineModuleInfoImpl::StubValueTy(Sym, !GV->hasLocalLinkage());
|
|
}
|
|
|
|
return TargetLoweringObjectFile::
|
|
getTTypeReference(MCSymbolRefExpr::create(SSym, getContext()),
|
|
Encoding & ~dwarf::DW_EH_PE_indirect, Streamer);
|
|
}
|
|
|
|
return TargetLoweringObjectFile::
|
|
getTTypeGlobalReference(GV, Encoding, Mang, TM, MMI, Streamer);
|
|
}
|
|
|
|
static SectionKind
|
|
getELFKindForNamedSection(StringRef Name, SectionKind K) {
|
|
// 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
|
|
if (Name.empty() || Name[0] != '.') return K;
|
|
|
|
// Some lame default implementation based on some magic section names.
|
|
if (Name == ".bss" ||
|
|
Name.startswith(".bss.") ||
|
|
Name.startswith(".gnu.linkonce.b.") ||
|
|
Name.startswith(".llvm.linkonce.b.") ||
|
|
Name == ".sbss" ||
|
|
Name.startswith(".sbss.") ||
|
|
Name.startswith(".gnu.linkonce.sb.") ||
|
|
Name.startswith(".llvm.linkonce.sb."))
|
|
return SectionKind::getBSS();
|
|
|
|
if (Name == ".tdata" ||
|
|
Name.startswith(".tdata.") ||
|
|
Name.startswith(".gnu.linkonce.td.") ||
|
|
Name.startswith(".llvm.linkonce.td."))
|
|
return SectionKind::getThreadData();
|
|
|
|
if (Name == ".tbss" ||
|
|
Name.startswith(".tbss.") ||
|
|
Name.startswith(".gnu.linkonce.tb.") ||
|
|
Name.startswith(".llvm.linkonce.tb."))
|
|
return SectionKind::getThreadBSS();
|
|
|
|
return K;
|
|
}
|
|
|
|
|
|
static unsigned getELFSectionType(StringRef Name, SectionKind K) {
|
|
|
|
if (Name == ".init_array")
|
|
return ELF::SHT_INIT_ARRAY;
|
|
|
|
if (Name == ".fini_array")
|
|
return ELF::SHT_FINI_ARRAY;
|
|
|
|
if (Name == ".preinit_array")
|
|
return ELF::SHT_PREINIT_ARRAY;
|
|
|
|
if (K.isBSS() || K.isThreadBSS())
|
|
return ELF::SHT_NOBITS;
|
|
|
|
return ELF::SHT_PROGBITS;
|
|
}
|
|
|
|
static unsigned getELFSectionFlags(SectionKind K) {
|
|
unsigned Flags = 0;
|
|
|
|
if (!K.isMetadata())
|
|
Flags |= ELF::SHF_ALLOC;
|
|
|
|
if (K.isText())
|
|
Flags |= ELF::SHF_EXECINSTR;
|
|
|
|
if (K.isWriteable())
|
|
Flags |= ELF::SHF_WRITE;
|
|
|
|
if (K.isThreadLocal())
|
|
Flags |= ELF::SHF_TLS;
|
|
|
|
if (K.isMergeableCString() || K.isMergeableConst())
|
|
Flags |= ELF::SHF_MERGE;
|
|
|
|
if (K.isMergeableCString())
|
|
Flags |= ELF::SHF_STRINGS;
|
|
|
|
return Flags;
|
|
}
|
|
|
|
static const Comdat *getELFComdat(const GlobalValue *GV) {
|
|
const Comdat *C = GV->getComdat();
|
|
if (!C)
|
|
return nullptr;
|
|
|
|
if (C->getSelectionKind() != Comdat::Any)
|
|
report_fatal_error("ELF COMDATs only support SelectionKind::Any, '" +
|
|
C->getName() + "' cannot be lowered.");
|
|
|
|
return C;
|
|
}
|
|
|
|
MCSection *TargetLoweringObjectFileELF::getExplicitSectionGlobal(
|
|
const GlobalValue *GV, SectionKind Kind, Mangler &Mang,
|
|
const TargetMachine &TM) const {
|
|
StringRef SectionName = GV->getSection();
|
|
|
|
// Infer section flags from the section name if we can.
|
|
Kind = getELFKindForNamedSection(SectionName, Kind);
|
|
|
|
StringRef Group = "";
|
|
unsigned Flags = getELFSectionFlags(Kind);
|
|
if (const Comdat *C = getELFComdat(GV)) {
|
|
Group = C->getName();
|
|
Flags |= ELF::SHF_GROUP;
|
|
}
|
|
return getContext().getELFSection(SectionName,
|
|
getELFSectionType(SectionName, Kind), Flags,
|
|
/*EntrySize=*/0, Group);
|
|
}
|
|
|
|
/// Return the section prefix name used by options FunctionsSections and
|
|
/// DataSections.
|
|
static StringRef 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 (Kind.isDataNoRel())
|
|
return ".data";
|
|
if (Kind.isDataRelLocal())
|
|
return ".data.rel.local";
|
|
if (Kind.isDataRel())
|
|
return ".data.rel";
|
|
if (Kind.isReadOnlyWithRelLocal())
|
|
return ".data.rel.ro.local";
|
|
assert(Kind.isReadOnlyWithRel() && "Unknown section kind");
|
|
return ".data.rel.ro";
|
|
}
|
|
|
|
static MCSectionELF *
|
|
selectELFSectionForGlobal(MCContext &Ctx, const GlobalValue *GV,
|
|
SectionKind Kind, Mangler &Mang,
|
|
const TargetMachine &TM, bool EmitUniqueSection,
|
|
unsigned Flags, unsigned *NextUniqueID) {
|
|
unsigned EntrySize = 0;
|
|
if (Kind.isMergeableCString()) {
|
|
if (Kind.isMergeable2ByteCString()) {
|
|
EntrySize = 2;
|
|
} else if (Kind.isMergeable4ByteCString()) {
|
|
EntrySize = 4;
|
|
} else {
|
|
EntrySize = 1;
|
|
assert(Kind.isMergeable1ByteCString() && "unknown string width");
|
|
}
|
|
} else if (Kind.isMergeableConst()) {
|
|
if (Kind.isMergeableConst4()) {
|
|
EntrySize = 4;
|
|
} else if (Kind.isMergeableConst8()) {
|
|
EntrySize = 8;
|
|
} else {
|
|
assert(Kind.isMergeableConst16() && "unknown data width");
|
|
EntrySize = 16;
|
|
}
|
|
}
|
|
|
|
StringRef Group = "";
|
|
if (const Comdat *C = getELFComdat(GV)) {
|
|
Flags |= ELF::SHF_GROUP;
|
|
Group = C->getName();
|
|
}
|
|
|
|
bool UniqueSectionNames = TM.getUniqueSectionNames();
|
|
SmallString<128> Name;
|
|
if (Kind.isMergeableCString()) {
|
|
// We also need alignment here.
|
|
// FIXME: this is getting the alignment of the character, not the
|
|
// alignment of the global!
|
|
unsigned Align =
|
|
TM.getDataLayout()->getPreferredAlignment(cast<GlobalVariable>(GV));
|
|
|
|
std::string SizeSpec = ".rodata.str" + utostr(EntrySize) + ".";
|
|
Name = SizeSpec + utostr(Align);
|
|
} else if (Kind.isMergeableConst()) {
|
|
Name = ".rodata.cst";
|
|
Name += utostr(EntrySize);
|
|
} else {
|
|
Name = getSectionPrefixForGlobal(Kind);
|
|
}
|
|
|
|
if (EmitUniqueSection && UniqueSectionNames) {
|
|
Name.push_back('.');
|
|
TM.getNameWithPrefix(Name, GV, Mang, true);
|
|
}
|
|
unsigned UniqueID = ~0;
|
|
if (EmitUniqueSection && !UniqueSectionNames) {
|
|
UniqueID = *NextUniqueID;
|
|
(*NextUniqueID)++;
|
|
}
|
|
return Ctx.getELFSection(Name, getELFSectionType(Name, Kind), Flags,
|
|
EntrySize, Group, UniqueID);
|
|
}
|
|
|
|
MCSection *TargetLoweringObjectFileELF::SelectSectionForGlobal(
|
|
const GlobalValue *GV, SectionKind Kind, Mangler &Mang,
|
|
const TargetMachine &TM) const {
|
|
unsigned Flags = getELFSectionFlags(Kind);
|
|
|
|
// If we have -ffunction-section or -fdata-section then we should emit the
|
|
// global value to a uniqued section specifically for it.
|
|
bool EmitUniqueSection = false;
|
|
if (!(Flags & ELF::SHF_MERGE) && !Kind.isCommon()) {
|
|
if (Kind.isText())
|
|
EmitUniqueSection = TM.getFunctionSections();
|
|
else
|
|
EmitUniqueSection = TM.getDataSections();
|
|
}
|
|
EmitUniqueSection |= GV->hasComdat();
|
|
|
|
return selectELFSectionForGlobal(getContext(), GV, Kind, Mang, TM,
|
|
EmitUniqueSection, Flags, &NextUniqueID);
|
|
}
|
|
|
|
MCSection *TargetLoweringObjectFileELF::getSectionForJumpTable(
|
|
const Function &F, Mangler &Mang, const TargetMachine &TM) const {
|
|
// If the function can be removed, produce a unique section so that
|
|
// the table doesn't prevent the removal.
|
|
const Comdat *C = F.getComdat();
|
|
bool EmitUniqueSection = TM.getFunctionSections() || C;
|
|
if (!EmitUniqueSection)
|
|
return ReadOnlySection;
|
|
|
|
return selectELFSectionForGlobal(getContext(), &F, SectionKind::getReadOnly(),
|
|
Mang, TM, EmitUniqueSection, ELF::SHF_ALLOC,
|
|
&NextUniqueID);
|
|
}
|
|
|
|
bool TargetLoweringObjectFileELF::shouldPutJumpTableInFunctionSection(
|
|
bool UsesLabelDifference, const Function &F) const {
|
|
// We can always create relative relocations, so use another section
|
|
// that can be marked non-executable.
|
|
return false;
|
|
}
|
|
|
|
/// Given a mergeable constant with the specified size and relocation
|
|
/// information, return a section that it should be placed in.
|
|
MCSection *
|
|
TargetLoweringObjectFileELF::getSectionForConstant(SectionKind Kind,
|
|
const Constant *C) const {
|
|
if (Kind.isMergeableConst4() && MergeableConst4Section)
|
|
return MergeableConst4Section;
|
|
if (Kind.isMergeableConst8() && MergeableConst8Section)
|
|
return MergeableConst8Section;
|
|
if (Kind.isMergeableConst16() && MergeableConst16Section)
|
|
return MergeableConst16Section;
|
|
if (Kind.isReadOnly())
|
|
return ReadOnlySection;
|
|
|
|
if (Kind.isReadOnlyWithRelLocal()) return DataRelROLocalSection;
|
|
assert(Kind.isReadOnlyWithRel() && "Unknown section kind");
|
|
return DataRelROSection;
|
|
}
|
|
|
|
static MCSectionELF *getStaticStructorSection(MCContext &Ctx, bool UseInitArray,
|
|
bool IsCtor, unsigned Priority,
|
|
const MCSymbol *KeySym) {
|
|
std::string Name;
|
|
unsigned Type;
|
|
unsigned Flags = ELF::SHF_ALLOC | ELF::SHF_WRITE;
|
|
StringRef COMDAT = KeySym ? KeySym->getName() : "";
|
|
|
|
if (KeySym)
|
|
Flags |= ELF::SHF_GROUP;
|
|
|
|
if (UseInitArray) {
|
|
if (IsCtor) {
|
|
Type = ELF::SHT_INIT_ARRAY;
|
|
Name = ".init_array";
|
|
} else {
|
|
Type = ELF::SHT_FINI_ARRAY;
|
|
Name = ".fini_array";
|
|
}
|
|
if (Priority != 65535) {
|
|
Name += '.';
|
|
Name += utostr(Priority);
|
|
}
|
|
} else {
|
|
// The default scheme is .ctor / .dtor, so we have to invert the priority
|
|
// numbering.
|
|
if (IsCtor)
|
|
Name = ".ctors";
|
|
else
|
|
Name = ".dtors";
|
|
if (Priority != 65535) {
|
|
Name += '.';
|
|
Name += utostr(65535 - Priority);
|
|
}
|
|
Type = ELF::SHT_PROGBITS;
|
|
}
|
|
|
|
return Ctx.getELFSection(Name, Type, Flags, 0, COMDAT);
|
|
}
|
|
|
|
MCSection *TargetLoweringObjectFileELF::getStaticCtorSection(
|
|
unsigned Priority, const MCSymbol *KeySym) const {
|
|
return getStaticStructorSection(getContext(), UseInitArray, true, Priority,
|
|
KeySym);
|
|
}
|
|
|
|
MCSection *TargetLoweringObjectFileELF::getStaticDtorSection(
|
|
unsigned Priority, const MCSymbol *KeySym) const {
|
|
return getStaticStructorSection(getContext(), UseInitArray, false, Priority,
|
|
KeySym);
|
|
}
|
|
|
|
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);
|
|
StaticDtorSection = getContext().getELFSection(
|
|
".fini_array", ELF::SHT_FINI_ARRAY, ELF::SHF_WRITE | ELF::SHF_ALLOC);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// MachO
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
TargetLoweringObjectFileMachO::TargetLoweringObjectFileMachO()
|
|
: TargetLoweringObjectFile() {
|
|
SupportIndirectSymViaGOTPCRel = true;
|
|
}
|
|
|
|
/// getDepLibFromLinkerOpt - Extract the dependent library name from a linker
|
|
/// option string. Returns StringRef() if the option does not specify a library.
|
|
StringRef TargetLoweringObjectFileMachO::
|
|
getDepLibFromLinkerOpt(StringRef LinkerOption) const {
|
|
const char *LibCmd = "-l";
|
|
if (LinkerOption.startswith(LibCmd))
|
|
return LinkerOption.substr(strlen(LibCmd));
|
|
return StringRef();
|
|
}
|
|
|
|
/// emitModuleFlags - Perform code emission for module flags.
|
|
void TargetLoweringObjectFileMachO::
|
|
emitModuleFlags(MCStreamer &Streamer,
|
|
ArrayRef<Module::ModuleFlagEntry> ModuleFlags,
|
|
Mangler &Mang, const TargetMachine &TM) const {
|
|
unsigned VersionVal = 0;
|
|
unsigned ImageInfoFlags = 0;
|
|
MDNode *LinkerOptions = nullptr;
|
|
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();
|
|
Metadata *Val = MFE.Val;
|
|
|
|
if (Key == "Objective-C Image Info Version") {
|
|
VersionVal = mdconst::extract<ConstantInt>(Val)->getZExtValue();
|
|
} else if (Key == "Objective-C Garbage Collection" ||
|
|
Key == "Objective-C GC Only" ||
|
|
Key == "Objective-C Is Simulated" ||
|
|
Key == "Objective-C Image Swift Version") {
|
|
ImageInfoFlags |= mdconst::extract<ConstantInt>(Val)->getZExtValue();
|
|
} else if (Key == "Objective-C Image Info Section") {
|
|
SectionVal = cast<MDString>(Val)->getString();
|
|
} else if (Key == "Linker Options") {
|
|
LinkerOptions = cast<MDNode>(Val);
|
|
}
|
|
}
|
|
|
|
// Emit the linker options if present.
|
|
if (LinkerOptions) {
|
|
for (unsigned i = 0, e = LinkerOptions->getNumOperands(); i != e; ++i) {
|
|
MDNode *MDOptions = cast<MDNode>(LinkerOptions->getOperand(i));
|
|
SmallVector<std::string, 4> StrOptions;
|
|
|
|
// Convert to strings.
|
|
for (unsigned ii = 0, ie = MDOptions->getNumOperands(); ii != ie; ++ii) {
|
|
MDString *MDOption = cast<MDString>(MDOptions->getOperand(ii));
|
|
StrOptions.push_back(MDOption->getString());
|
|
}
|
|
|
|
Streamer.EmitLinkerOptions(StrOptions);
|
|
}
|
|
}
|
|
|
|
// 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 + ".");
|
|
|
|
// Get the section.
|
|
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();
|
|
}
|
|
|
|
static void checkMachOComdat(const GlobalValue *GV) {
|
|
const Comdat *C = GV->getComdat();
|
|
if (!C)
|
|
return;
|
|
|
|
report_fatal_error("MachO doesn't support COMDATs, '" + C->getName() +
|
|
"' cannot be lowered.");
|
|
}
|
|
|
|
MCSection *TargetLoweringObjectFileMachO::getExplicitSectionGlobal(
|
|
const GlobalValue *GV, SectionKind Kind, Mangler &Mang,
|
|
const TargetMachine &TM) const {
|
|
// Parse the section specifier and create it if valid.
|
|
StringRef Segment, Section;
|
|
unsigned TAA = 0, StubSize = 0;
|
|
bool TAAParsed;
|
|
|
|
checkMachOComdat(GV);
|
|
|
|
std::string ErrorCode =
|
|
MCSectionMachO::ParseSectionSpecifier(GV->getSection(), Segment, Section,
|
|
TAA, TAAParsed, StubSize);
|
|
if (!ErrorCode.empty()) {
|
|
// If invalid, report the error with report_fatal_error.
|
|
report_fatal_error("Global variable '" + GV->getName() +
|
|
"' has an invalid section specifier '" +
|
|
GV->getSection() + "': " + ErrorCode + ".");
|
|
}
|
|
|
|
// Get the section.
|
|
MCSectionMachO *S =
|
|
getContext().getMachOSection(Segment, Section, TAA, StubSize, Kind);
|
|
|
|
// If TAA wasn't set by ParseSectionSpecifier() above,
|
|
// use the value returned by getMachOSection() as a default.
|
|
if (!TAAParsed)
|
|
TAA = S->getTypeAndAttributes();
|
|
|
|
// Okay, now that we got the section, verify that the TAA & StubSize agree.
|
|
// If the user declared multiple globals with different section flags, we need
|
|
// 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->getName() +
|
|
"' section type or attributes does not match previous"
|
|
" section specifier");
|
|
}
|
|
|
|
return S;
|
|
}
|
|
|
|
MCSection *TargetLoweringObjectFileMachO::SelectSectionForGlobal(
|
|
const GlobalValue *GV, SectionKind Kind, Mangler &Mang,
|
|
const TargetMachine &TM) const {
|
|
checkMachOComdat(GV);
|
|
|
|
// Handle thread local data.
|
|
if (Kind.isThreadBSS()) return TLSBSSSection;
|
|
if (Kind.isThreadData()) return TLSDataSection;
|
|
|
|
if (Kind.isText())
|
|
return GV->isWeakForLinker() ? TextCoalSection : TextSection;
|
|
|
|
// If this is weak/linkonce, put this in a coalescable section, either in text
|
|
// or data depending on if it is writable.
|
|
if (GV->isWeakForLinker()) {
|
|
if (Kind.isReadOnly())
|
|
return ConstTextCoalSection;
|
|
return DataCoalSection;
|
|
}
|
|
|
|
// FIXME: Alignment check should be handled by section classifier.
|
|
if (Kind.isMergeable1ByteCString() &&
|
|
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.getDataLayout()->getPreferredAlignment(cast<GlobalVariable>(GV)) < 32)
|
|
return UStringSection;
|
|
|
|
// With MachO only variables whose corresponding symbol starts with 'l' or
|
|
// 'L' can be merged, so we only try merging GVs with private linkage.
|
|
if (GV->hasPrivateLinkage() && Kind.isMergeableConst()) {
|
|
if (Kind.isMergeableConst4())
|
|
return FourByteConstantSection;
|
|
if (Kind.isMergeableConst8())
|
|
return EightByteConstantSection;
|
|
if (Kind.isMergeableConst16())
|
|
return SixteenByteConstantSection;
|
|
}
|
|
|
|
// Otherwise, if it is readonly, but not something we can specially optimize,
|
|
// just drop it in .const.
|
|
if (Kind.isReadOnly())
|
|
return ReadOnlySection;
|
|
|
|
// If this is marked const, put it into a const section. But if the dynamic
|
|
// linker needs to write to it, put it in the data segment.
|
|
if (Kind.isReadOnlyWithRel())
|
|
return ConstDataSection;
|
|
|
|
// Put zero initialized globals with strong external linkage in the
|
|
// DATA, __common section with the .zerofill directive.
|
|
if (Kind.isBSSExtern())
|
|
return DataCommonSection;
|
|
|
|
// Put zero initialized globals with local linkage in __DATA,__bss directive
|
|
// with the .zerofill directive (aka .lcomm).
|
|
if (Kind.isBSSLocal())
|
|
return DataBSSSection;
|
|
|
|
// Otherwise, just drop the variable in the normal data section.
|
|
return DataSection;
|
|
}
|
|
|
|
MCSection *
|
|
TargetLoweringObjectFileMachO::getSectionForConstant(SectionKind Kind,
|
|
const Constant *C) const {
|
|
// If this constant requires a relocation, we have to put it in the data
|
|
// segment, not in the text segment.
|
|
if (Kind.isDataRel() || Kind.isReadOnlyWithRel())
|
|
return ConstDataSection;
|
|
|
|
if (Kind.isMergeableConst4())
|
|
return FourByteConstantSection;
|
|
if (Kind.isMergeableConst8())
|
|
return EightByteConstantSection;
|
|
if (Kind.isMergeableConst16())
|
|
return SixteenByteConstantSection;
|
|
return ReadOnlySection; // .const
|
|
}
|
|
|
|
const MCExpr *TargetLoweringObjectFileMachO::getTTypeGlobalReference(
|
|
const GlobalValue *GV, unsigned Encoding, Mangler &Mang,
|
|
const TargetMachine &TM, MachineModuleInfo *MMI,
|
|
MCStreamer &Streamer) const {
|
|
// The mach-o version of this method defaults to returning a stub reference.
|
|
|
|
if (Encoding & DW_EH_PE_indirect) {
|
|
MachineModuleInfoMachO &MachOMMI =
|
|
MMI->getObjFileInfo<MachineModuleInfoMachO>();
|
|
|
|
MCSymbol *SSym =
|
|
getSymbolWithGlobalValueBase(GV, "$non_lazy_ptr", Mang, TM);
|
|
|
|
// Add information about the stub reference to MachOMMI so that the stub
|
|
// gets emitted by the asmprinter.
|
|
MachineModuleInfoImpl::StubValueTy &StubSym =
|
|
GV->hasHiddenVisibility() ? MachOMMI.getHiddenGVStubEntry(SSym) :
|
|
MachOMMI.getGVStubEntry(SSym);
|
|
if (!StubSym.getPointer()) {
|
|
MCSymbol *Sym = TM.getSymbol(GV, Mang);
|
|
StubSym = MachineModuleInfoImpl::StubValueTy(Sym, !GV->hasLocalLinkage());
|
|
}
|
|
|
|
return TargetLoweringObjectFile::
|
|
getTTypeReference(MCSymbolRefExpr::create(SSym, getContext()),
|
|
Encoding & ~dwarf::DW_EH_PE_indirect, Streamer);
|
|
}
|
|
|
|
return TargetLoweringObjectFile::getTTypeGlobalReference(GV, Encoding, Mang,
|
|
TM, MMI, Streamer);
|
|
}
|
|
|
|
MCSymbol *TargetLoweringObjectFileMachO::getCFIPersonalitySymbol(
|
|
const GlobalValue *GV, Mangler &Mang, const TargetMachine &TM,
|
|
MachineModuleInfo *MMI) const {
|
|
// The mach-o version of this method defaults to returning a stub reference.
|
|
MachineModuleInfoMachO &MachOMMI =
|
|
MMI->getObjFileInfo<MachineModuleInfoMachO>();
|
|
|
|
MCSymbol *SSym = getSymbolWithGlobalValueBase(GV, "$non_lazy_ptr", Mang, TM);
|
|
|
|
// Add information about the stub reference to MachOMMI so that the stub
|
|
// gets emitted by the asmprinter.
|
|
MachineModuleInfoImpl::StubValueTy &StubSym = MachOMMI.getGVStubEntry(SSym);
|
|
if (!StubSym.getPointer()) {
|
|
MCSymbol *Sym = TM.getSymbol(GV, Mang);
|
|
StubSym = MachineModuleInfoImpl::StubValueTy(Sym, !GV->hasLocalLinkage());
|
|
}
|
|
|
|
return SSym;
|
|
}
|
|
|
|
const MCExpr *TargetLoweringObjectFileMachO::getIndirectSymViaGOTPCRel(
|
|
const MCSymbol *Sym, const MCValue &MV, int64_t Offset,
|
|
MachineModuleInfo *MMI, MCStreamer &Streamer) const {
|
|
// Although MachO 32-bit targets do not explictly have a GOTPCREL relocation
|
|
// as 64-bit do, we replace the GOT equivalent by accessing the final symbol
|
|
// through a non_lazy_ptr stub instead. One advantage is that it allows the
|
|
// computation of deltas to final external symbols. Example:
|
|
//
|
|
// _extgotequiv:
|
|
// .long _extfoo
|
|
//
|
|
// _delta:
|
|
// .long _extgotequiv-_delta
|
|
//
|
|
// is transformed to:
|
|
//
|
|
// _delta:
|
|
// .long L_extfoo$non_lazy_ptr-(_delta+0)
|
|
//
|
|
// .section __IMPORT,__pointers,non_lazy_symbol_pointers
|
|
// L_extfoo$non_lazy_ptr:
|
|
// .indirect_symbol _extfoo
|
|
// .long 0
|
|
//
|
|
MachineModuleInfoMachO &MachOMMI =
|
|
MMI->getObjFileInfo<MachineModuleInfoMachO>();
|
|
MCContext &Ctx = getContext();
|
|
|
|
// The offset must consider the original displacement from the base symbol
|
|
// since 32-bit targets don't have a GOTPCREL to fold the PC displacement.
|
|
Offset = -MV.getConstant();
|
|
const MCSymbol *BaseSym = &MV.getSymB()->getSymbol();
|
|
|
|
// Access the final symbol via sym$non_lazy_ptr and generate the appropriated
|
|
// non_lazy_ptr stubs.
|
|
SmallString<128> Name;
|
|
StringRef Suffix = "$non_lazy_ptr";
|
|
Name += DL->getPrivateGlobalPrefix();
|
|
Name += Sym->getName();
|
|
Name += Suffix;
|
|
MCSymbol *Stub = Ctx.getOrCreateSymbol(Name);
|
|
|
|
MachineModuleInfoImpl::StubValueTy &StubSym = MachOMMI.getGVStubEntry(Stub);
|
|
if (!StubSym.getPointer())
|
|
StubSym = MachineModuleInfoImpl::
|
|
StubValueTy(const_cast<MCSymbol *>(Sym), true /* access indirectly */);
|
|
|
|
const MCExpr *BSymExpr =
|
|
MCSymbolRefExpr::create(BaseSym, MCSymbolRefExpr::VK_None, Ctx);
|
|
const MCExpr *LHS =
|
|
MCSymbolRefExpr::create(Stub, MCSymbolRefExpr::VK_None, Ctx);
|
|
|
|
if (!Offset)
|
|
return MCBinaryExpr::createSub(LHS, BSymExpr, Ctx);
|
|
|
|
const MCExpr *RHS =
|
|
MCBinaryExpr::createAdd(BSymExpr, MCConstantExpr::create(Offset, Ctx), Ctx);
|
|
return MCBinaryExpr::createSub(LHS, RHS, Ctx);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// COFF
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
static unsigned
|
|
getCOFFSectionFlags(SectionKind K) {
|
|
unsigned Flags = 0;
|
|
|
|
if (K.isMetadata())
|
|
Flags |=
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE;
|
|
else if (K.isText())
|
|
Flags |=
|
|
COFF::IMAGE_SCN_MEM_EXECUTE |
|
|
COFF::IMAGE_SCN_MEM_READ |
|
|
COFF::IMAGE_SCN_CNT_CODE;
|
|
else if (K.isBSS())
|
|
Flags |=
|
|
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() || K.isReadOnlyWithRel())
|
|
Flags |=
|
|
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
COFF::IMAGE_SCN_MEM_READ;
|
|
else if (K.isWriteable())
|
|
Flags |=
|
|
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
COFF::IMAGE_SCN_MEM_READ |
|
|
COFF::IMAGE_SCN_MEM_WRITE;
|
|
|
|
return Flags;
|
|
}
|
|
|
|
static const GlobalValue *getComdatGVForCOFF(const GlobalValue *GV) {
|
|
const Comdat *C = GV->getComdat();
|
|
assert(C && "expected GV to have a Comdat!");
|
|
|
|
StringRef ComdatGVName = C->getName();
|
|
const GlobalValue *ComdatGV = GV->getParent()->getNamedValue(ComdatGVName);
|
|
if (!ComdatGV)
|
|
report_fatal_error("Associative COMDAT symbol '" + ComdatGVName +
|
|
"' does not exist.");
|
|
|
|
if (ComdatGV->getComdat() != C)
|
|
report_fatal_error("Associative COMDAT symbol '" + ComdatGVName +
|
|
"' is not a key for its COMDAT.");
|
|
|
|
return ComdatGV;
|
|
}
|
|
|
|
static int getSelectionForCOFF(const GlobalValue *GV) {
|
|
if (const Comdat *C = GV->getComdat()) {
|
|
const GlobalValue *ComdatKey = getComdatGVForCOFF(GV);
|
|
if (const auto *GA = dyn_cast<GlobalAlias>(ComdatKey))
|
|
ComdatKey = GA->getBaseObject();
|
|
if (ComdatKey == GV) {
|
|
switch (C->getSelectionKind()) {
|
|
case Comdat::Any:
|
|
return COFF::IMAGE_COMDAT_SELECT_ANY;
|
|
case Comdat::ExactMatch:
|
|
return COFF::IMAGE_COMDAT_SELECT_EXACT_MATCH;
|
|
case Comdat::Largest:
|
|
return COFF::IMAGE_COMDAT_SELECT_LARGEST;
|
|
case Comdat::NoDuplicates:
|
|
return COFF::IMAGE_COMDAT_SELECT_NODUPLICATES;
|
|
case Comdat::SameSize:
|
|
return COFF::IMAGE_COMDAT_SELECT_SAME_SIZE;
|
|
}
|
|
} else {
|
|
return COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE;
|
|
}
|
|
} else if (GV->isWeakForLinker()) {
|
|
return COFF::IMAGE_COMDAT_SELECT_ANY;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
MCSection *TargetLoweringObjectFileCOFF::getExplicitSectionGlobal(
|
|
const GlobalValue *GV, SectionKind Kind, Mangler &Mang,
|
|
const TargetMachine &TM) const {
|
|
int Selection = 0;
|
|
unsigned Characteristics = getCOFFSectionFlags(Kind);
|
|
StringRef Name = GV->getSection();
|
|
StringRef COMDATSymName = "";
|
|
if (GV->hasComdat()) {
|
|
Selection = getSelectionForCOFF(GV);
|
|
const GlobalValue *ComdatGV;
|
|
if (Selection == COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE)
|
|
ComdatGV = getComdatGVForCOFF(GV);
|
|
else
|
|
ComdatGV = GV;
|
|
|
|
if (!ComdatGV->hasPrivateLinkage()) {
|
|
MCSymbol *Sym = TM.getSymbol(ComdatGV, Mang);
|
|
COMDATSymName = Sym->getName();
|
|
Characteristics |= COFF::IMAGE_SCN_LNK_COMDAT;
|
|
} else {
|
|
Selection = 0;
|
|
}
|
|
}
|
|
return getContext().getCOFFSection(Name,
|
|
Characteristics,
|
|
Kind,
|
|
COMDATSymName,
|
|
Selection);
|
|
}
|
|
|
|
static const char *getCOFFSectionNameForUniqueGlobal(SectionKind Kind) {
|
|
if (Kind.isText())
|
|
return ".text";
|
|
if (Kind.isBSS())
|
|
return ".bss";
|
|
if (Kind.isThreadLocal())
|
|
return ".tls$";
|
|
if (Kind.isReadOnly() || Kind.isReadOnlyWithRel())
|
|
return ".rdata";
|
|
return ".data";
|
|
}
|
|
|
|
MCSection *TargetLoweringObjectFileCOFF::SelectSectionForGlobal(
|
|
const GlobalValue *GV, SectionKind Kind, Mangler &Mang,
|
|
const TargetMachine &TM) const {
|
|
// If we have -ffunction-sections then we should emit the global value to a
|
|
// uniqued section specifically for it.
|
|
bool EmitUniquedSection;
|
|
if (Kind.isText())
|
|
EmitUniquedSection = TM.getFunctionSections();
|
|
else
|
|
EmitUniquedSection = TM.getDataSections();
|
|
|
|
if ((EmitUniquedSection && !Kind.isCommon()) || GV->hasComdat()) {
|
|
const char *Name = getCOFFSectionNameForUniqueGlobal(Kind);
|
|
unsigned Characteristics = getCOFFSectionFlags(Kind);
|
|
|
|
Characteristics |= COFF::IMAGE_SCN_LNK_COMDAT;
|
|
int Selection = getSelectionForCOFF(GV);
|
|
if (!Selection)
|
|
Selection = COFF::IMAGE_COMDAT_SELECT_NODUPLICATES;
|
|
const GlobalValue *ComdatGV;
|
|
if (GV->hasComdat())
|
|
ComdatGV = getComdatGVForCOFF(GV);
|
|
else
|
|
ComdatGV = GV;
|
|
|
|
if (!ComdatGV->hasPrivateLinkage()) {
|
|
MCSymbol *Sym = TM.getSymbol(ComdatGV, Mang);
|
|
StringRef COMDATSymName = Sym->getName();
|
|
return getContext().getCOFFSection(Name, Characteristics, Kind,
|
|
COMDATSymName, Selection);
|
|
} else {
|
|
SmallString<256> TmpData;
|
|
getNameWithPrefix(TmpData, GV, /*CannotUsePrivateLabel=*/true, Mang, TM);
|
|
return getContext().getCOFFSection(Name, Characteristics, Kind, TmpData,
|
|
Selection);
|
|
}
|
|
}
|
|
|
|
if (Kind.isText())
|
|
return TextSection;
|
|
|
|
if (Kind.isThreadLocal())
|
|
return TLSDataSection;
|
|
|
|
if (Kind.isReadOnly() || Kind.isReadOnlyWithRel())
|
|
return ReadOnlySection;
|
|
|
|
// Note: we claim that common symbols are put in BSSSection, but they are
|
|
// really emitted with the magic .comm directive, which creates a symbol table
|
|
// entry but not a section.
|
|
if (Kind.isBSS() || Kind.isCommon())
|
|
return BSSSection;
|
|
|
|
return DataSection;
|
|
}
|
|
|
|
void TargetLoweringObjectFileCOFF::getNameWithPrefix(
|
|
SmallVectorImpl<char> &OutName, const GlobalValue *GV,
|
|
bool CannotUsePrivateLabel, Mangler &Mang, const TargetMachine &TM) const {
|
|
if (GV->hasPrivateLinkage() &&
|
|
((isa<Function>(GV) && TM.getFunctionSections()) ||
|
|
(isa<GlobalVariable>(GV) && TM.getDataSections())))
|
|
CannotUsePrivateLabel = true;
|
|
|
|
Mang.getNameWithPrefix(OutName, GV, CannotUsePrivateLabel);
|
|
}
|
|
|
|
MCSection *TargetLoweringObjectFileCOFF::getSectionForJumpTable(
|
|
const Function &F, Mangler &Mang, const TargetMachine &TM) const {
|
|
// If the function can be removed, produce a unique section so that
|
|
// the table doesn't prevent the removal.
|
|
const Comdat *C = F.getComdat();
|
|
bool EmitUniqueSection = TM.getFunctionSections() || C;
|
|
if (!EmitUniqueSection)
|
|
return ReadOnlySection;
|
|
|
|
// FIXME: we should produce a symbol for F instead.
|
|
if (F.hasPrivateLinkage())
|
|
return ReadOnlySection;
|
|
|
|
MCSymbol *Sym = TM.getSymbol(&F, Mang);
|
|
StringRef COMDATSymName = Sym->getName();
|
|
|
|
SectionKind Kind = SectionKind::getReadOnly();
|
|
const char *Name = getCOFFSectionNameForUniqueGlobal(Kind);
|
|
unsigned Characteristics = getCOFFSectionFlags(Kind);
|
|
Characteristics |= COFF::IMAGE_SCN_LNK_COMDAT;
|
|
|
|
return getContext().getCOFFSection(Name, Characteristics, Kind, COMDATSymName,
|
|
COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE);
|
|
}
|
|
|
|
StringRef TargetLoweringObjectFileCOFF::
|
|
getDepLibFromLinkerOpt(StringRef LinkerOption) const {
|
|
const char *LibCmd = "/DEFAULTLIB:";
|
|
if (LinkerOption.startswith(LibCmd))
|
|
return LinkerOption.substr(strlen(LibCmd));
|
|
return StringRef();
|
|
}
|
|
|
|
void TargetLoweringObjectFileCOFF::
|
|
emitModuleFlags(MCStreamer &Streamer,
|
|
ArrayRef<Module::ModuleFlagEntry> ModuleFlags,
|
|
Mangler &Mang, const TargetMachine &TM) const {
|
|
MDNode *LinkerOptions = nullptr;
|
|
|
|
// Look for the "Linker Options" flag, since it's the only one we support.
|
|
for (ArrayRef<Module::ModuleFlagEntry>::iterator
|
|
i = ModuleFlags.begin(), e = ModuleFlags.end(); i != e; ++i) {
|
|
const Module::ModuleFlagEntry &MFE = *i;
|
|
StringRef Key = MFE.Key->getString();
|
|
Metadata *Val = MFE.Val;
|
|
if (Key == "Linker Options") {
|
|
LinkerOptions = cast<MDNode>(Val);
|
|
break;
|
|
}
|
|
}
|
|
if (!LinkerOptions)
|
|
return;
|
|
|
|
// Emit the linker options to the linker .drectve section. According to the
|
|
// spec, this section is a space-separated string containing flags for linker.
|
|
MCSection *Sec = getDrectveSection();
|
|
Streamer.SwitchSection(Sec);
|
|
for (unsigned i = 0, e = LinkerOptions->getNumOperands(); i != e; ++i) {
|
|
MDNode *MDOptions = cast<MDNode>(LinkerOptions->getOperand(i));
|
|
for (unsigned ii = 0, ie = MDOptions->getNumOperands(); ii != ie; ++ii) {
|
|
MDString *MDOption = cast<MDString>(MDOptions->getOperand(ii));
|
|
// Lead with a space for consistency with our dllexport implementation.
|
|
std::string Directive(" ");
|
|
Directive.append(MDOption->getString());
|
|
Streamer.EmitBytes(Directive);
|
|
}
|
|
}
|
|
}
|
|
|
|
MCSection *TargetLoweringObjectFileCOFF::getStaticCtorSection(
|
|
unsigned Priority, const MCSymbol *KeySym) const {
|
|
return getContext().getAssociativeCOFFSection(
|
|
cast<MCSectionCOFF>(StaticCtorSection), KeySym);
|
|
}
|
|
|
|
MCSection *TargetLoweringObjectFileCOFF::getStaticDtorSection(
|
|
unsigned Priority, const MCSymbol *KeySym) const {
|
|
return getContext().getAssociativeCOFFSection(
|
|
cast<MCSectionCOFF>(StaticDtorSection), KeySym);
|
|
}
|