#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCSectionELF.h"
+#include "llvm/MC/MCSectionCOFF.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Target/Mangler.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Support/Dwarf.h"
+#include "llvm/Support/ELF.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/Triple.h"
using namespace llvm;
using namespace dwarf;
TargetLoweringObjectFile::Initialize(Ctx, TM);
BSSSection =
- getContext().getELFSection(".bss", MCSectionELF::SHT_NOBITS,
- MCSectionELF::SHF_WRITE |MCSectionELF::SHF_ALLOC,
+ getContext().getELFSection(".bss", ELF::SHT_NOBITS,
+ ELF::SHF_WRITE |ELF::SHF_ALLOC,
SectionKind::getBSS());
TextSection =
- getContext().getELFSection(".text", MCSectionELF::SHT_PROGBITS,
- MCSectionELF::SHF_EXECINSTR |
- MCSectionELF::SHF_ALLOC,
+ getContext().getELFSection(".text", ELF::SHT_PROGBITS,
+ ELF::SHF_EXECINSTR |
+ ELF::SHF_ALLOC,
SectionKind::getText());
DataSection =
- getContext().getELFSection(".data", MCSectionELF::SHT_PROGBITS,
- MCSectionELF::SHF_WRITE |MCSectionELF::SHF_ALLOC,
+ getContext().getELFSection(".data", ELF::SHT_PROGBITS,
+ ELF::SHF_WRITE |ELF::SHF_ALLOC,
SectionKind::getDataRel());
ReadOnlySection =
- getContext().getELFSection(".rodata", MCSectionELF::SHT_PROGBITS,
- MCSectionELF::SHF_ALLOC,
+ getContext().getELFSection(".rodata", ELF::SHT_PROGBITS,
+ ELF::SHF_ALLOC,
SectionKind::getReadOnly());
TLSDataSection =
- getContext().getELFSection(".tdata", MCSectionELF::SHT_PROGBITS,
- MCSectionELF::SHF_ALLOC | MCSectionELF::SHF_TLS |
- MCSectionELF::SHF_WRITE,
+ getContext().getELFSection(".tdata", ELF::SHT_PROGBITS,
+ ELF::SHF_ALLOC | ELF::SHF_TLS |
+ ELF::SHF_WRITE,
SectionKind::getThreadData());
TLSBSSSection =
- getContext().getELFSection(".tbss", MCSectionELF::SHT_NOBITS,
- MCSectionELF::SHF_ALLOC | MCSectionELF::SHF_TLS |
- MCSectionELF::SHF_WRITE,
+ getContext().getELFSection(".tbss", ELF::SHT_NOBITS,
+ ELF::SHF_ALLOC | ELF::SHF_TLS |
+ ELF::SHF_WRITE,
SectionKind::getThreadBSS());
DataRelSection =
- getContext().getELFSection(".data.rel", MCSectionELF::SHT_PROGBITS,
- MCSectionELF::SHF_ALLOC |MCSectionELF::SHF_WRITE,
+ getContext().getELFSection(".data.rel", ELF::SHT_PROGBITS,
+ ELF::SHF_ALLOC |ELF::SHF_WRITE,
SectionKind::getDataRel());
DataRelLocalSection =
- getContext().getELFSection(".data.rel.local", MCSectionELF::SHT_PROGBITS,
- MCSectionELF::SHF_ALLOC |MCSectionELF::SHF_WRITE,
+ getContext().getELFSection(".data.rel.local", ELF::SHT_PROGBITS,
+ ELF::SHF_ALLOC |ELF::SHF_WRITE,
SectionKind::getDataRelLocal());
DataRelROSection =
- getContext().getELFSection(".data.rel.ro", MCSectionELF::SHT_PROGBITS,
- MCSectionELF::SHF_ALLOC |MCSectionELF::SHF_WRITE,
+ getContext().getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
+ ELF::SHF_ALLOC |ELF::SHF_WRITE,
SectionKind::getReadOnlyWithRel());
DataRelROLocalSection =
- getContext().getELFSection(".data.rel.ro.local", MCSectionELF::SHT_PROGBITS,
- MCSectionELF::SHF_ALLOC |MCSectionELF::SHF_WRITE,
+ getContext().getELFSection(".data.rel.ro.local", ELF::SHT_PROGBITS,
+ ELF::SHF_ALLOC |ELF::SHF_WRITE,
SectionKind::getReadOnlyWithRelLocal());
MergeableConst4Section =
- getContext().getELFSection(".rodata.cst4", MCSectionELF::SHT_PROGBITS,
- MCSectionELF::SHF_ALLOC |MCSectionELF::SHF_MERGE,
+ getContext().getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
+ ELF::SHF_ALLOC |ELF::SHF_MERGE,
SectionKind::getMergeableConst4());
MergeableConst8Section =
- getContext().getELFSection(".rodata.cst8", MCSectionELF::SHT_PROGBITS,
- MCSectionELF::SHF_ALLOC |MCSectionELF::SHF_MERGE,
+ getContext().getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
+ ELF::SHF_ALLOC |ELF::SHF_MERGE,
SectionKind::getMergeableConst8());
MergeableConst16Section =
- getContext().getELFSection(".rodata.cst16", MCSectionELF::SHT_PROGBITS,
- MCSectionELF::SHF_ALLOC |MCSectionELF::SHF_MERGE,
+ getContext().getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
+ ELF::SHF_ALLOC |ELF::SHF_MERGE,
SectionKind::getMergeableConst16());
StaticCtorSection =
- getContext().getELFSection(".ctors", MCSectionELF::SHT_PROGBITS,
- MCSectionELF::SHF_ALLOC |MCSectionELF::SHF_WRITE,
+ getContext().getELFSection(".ctors", ELF::SHT_PROGBITS,
+ ELF::SHF_ALLOC |ELF::SHF_WRITE,
SectionKind::getDataRel());
StaticDtorSection =
- getContext().getELFSection(".dtors", MCSectionELF::SHT_PROGBITS,
- MCSectionELF::SHF_ALLOC |MCSectionELF::SHF_WRITE,
+ getContext().getELFSection(".dtors", ELF::SHT_PROGBITS,
+ ELF::SHF_ALLOC |ELF::SHF_WRITE,
SectionKind::getDataRel());
// Exception Handling Sections.
// 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", MCSectionELF::SHT_PROGBITS,
- MCSectionELF::SHF_ALLOC,
+ getContext().getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
+ ELF::SHF_ALLOC,
SectionKind::getReadOnly());
- EHFrameSection =
- getContext().getELFSection(".eh_frame", MCSectionELF::SHT_PROGBITS,
- MCSectionELF::SHF_ALLOC |MCSectionELF::SHF_WRITE,
- SectionKind::getDataRel());
-
// Debug Info Sections.
DwarfAbbrevSection =
- getContext().getELFSection(".debug_abbrev", MCSectionELF::SHT_PROGBITS, 0,
+ getContext().getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
SectionKind::getMetadata());
DwarfInfoSection =
- getContext().getELFSection(".debug_info", MCSectionELF::SHT_PROGBITS, 0,
+ getContext().getELFSection(".debug_info", ELF::SHT_PROGBITS, 0,
SectionKind::getMetadata());
DwarfLineSection =
- getContext().getELFSection(".debug_line", MCSectionELF::SHT_PROGBITS, 0,
+ getContext().getELFSection(".debug_line", ELF::SHT_PROGBITS, 0,
SectionKind::getMetadata());
DwarfFrameSection =
- getContext().getELFSection(".debug_frame", MCSectionELF::SHT_PROGBITS, 0,
+ getContext().getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0,
SectionKind::getMetadata());
DwarfPubNamesSection =
- getContext().getELFSection(".debug_pubnames", MCSectionELF::SHT_PROGBITS, 0,
+ getContext().getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0,
SectionKind::getMetadata());
DwarfPubTypesSection =
- getContext().getELFSection(".debug_pubtypes", MCSectionELF::SHT_PROGBITS, 0,
+ getContext().getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0,
SectionKind::getMetadata());
DwarfStrSection =
- getContext().getELFSection(".debug_str", MCSectionELF::SHT_PROGBITS, 0,
+ getContext().getELFSection(".debug_str", ELF::SHT_PROGBITS, 0,
SectionKind::getMetadata());
DwarfLocSection =
- getContext().getELFSection(".debug_loc", MCSectionELF::SHT_PROGBITS, 0,
+ getContext().getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0,
SectionKind::getMetadata());
DwarfARangesSection =
- getContext().getELFSection(".debug_aranges", MCSectionELF::SHT_PROGBITS, 0,
+ getContext().getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0,
SectionKind::getMetadata());
DwarfRangesSection =
- getContext().getELFSection(".debug_ranges", MCSectionELF::SHT_PROGBITS, 0,
+ getContext().getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0,
SectionKind::getMetadata());
DwarfMacroInfoSection =
- getContext().getELFSection(".debug_macinfo", MCSectionELF::SHT_PROGBITS, 0,
+ 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());
+}
static SectionKind
getELFKindForNamedSection(StringRef Name, SectionKind K) {
+ // FIXME: Why is this here? Codegen is should not be in the business
+ // of figuring section flags. If the user wrote section(".eh_frame"),
+ // we should just pass that to MC which will defer to the assembly
+ // or use its default if producing an object file.
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::getDataRel();
+
return K;
}
static unsigned getELFSectionType(StringRef Name, SectionKind K) {
if (Name == ".init_array")
- return MCSectionELF::SHT_INIT_ARRAY;
+ return ELF::SHT_INIT_ARRAY;
if (Name == ".fini_array")
- return MCSectionELF::SHT_FINI_ARRAY;
+ return ELF::SHT_FINI_ARRAY;
if (Name == ".preinit_array")
- return MCSectionELF::SHT_PREINIT_ARRAY;
+ return ELF::SHT_PREINIT_ARRAY;
if (K.isBSS() || K.isThreadBSS())
- return MCSectionELF::SHT_NOBITS;
+ return ELF::SHT_NOBITS;
- return MCSectionELF::SHT_PROGBITS;
+ return ELF::SHT_PROGBITS;
}
unsigned Flags = 0;
if (!K.isMetadata())
- Flags |= MCSectionELF::SHF_ALLOC;
+ Flags |= ELF::SHF_ALLOC;
if (K.isText())
- Flags |= MCSectionELF::SHF_EXECINSTR;
+ Flags |= ELF::SHF_EXECINSTR;
if (K.isWriteable())
- Flags |= MCSectionELF::SHF_WRITE;
+ Flags |= ELF::SHF_WRITE;
if (K.isThreadLocal())
- Flags |= MCSectionELF::SHF_TLS;
+ Flags |= ELF::SHF_TLS;
// K.isMergeableConst() is left out to honour PR4650
if (K.isMergeableCString() || K.isMergeableConst4() ||
K.isMergeableConst8() || K.isMergeableConst16())
- Flags |= MCSectionELF::SHF_MERGE;
+ Flags |= ELF::SHF_MERGE;
if (K.isMergeableCString())
- Flags |= MCSectionELF::SHF_STRINGS;
+ Flags |= ELF::SHF_STRINGS;
return Flags;
}
return getContext().getELFSection(SectionName,
getELFSectionType(SectionName, Kind),
- getELFSectionFlags(Kind), Kind, true);
+ getELFSectionFlags(Kind), Kind);
}
-static const char *getSectionPrefixForUniqueGlobal(SectionKind Kind) {
- if (Kind.isText()) return ".gnu.linkonce.t.";
- if (Kind.isReadOnly()) return ".gnu.linkonce.r.";
+/// getSectionPrefixForGlobal - Return the section prefix name used by options
+/// FunctionsSections and DataSections.
+static const char *getSectionPrefixForGlobal(SectionKind Kind) {
+ if (Kind.isText()) return ".text.";
+ if (Kind.isReadOnly()) return ".rodata.";
- if (Kind.isThreadData()) return ".gnu.linkonce.td.";
- if (Kind.isThreadBSS()) return ".gnu.linkonce.tb.";
+ if (Kind.isThreadData()) return ".tdata.";
+ if (Kind.isThreadBSS()) return ".tbss.";
- if (Kind.isDataNoRel()) return ".gnu.linkonce.d.";
- if (Kind.isDataRelLocal()) return ".gnu.linkonce.d.rel.local.";
- if (Kind.isDataRel()) return ".gnu.linkonce.d.rel.";
- if (Kind.isReadOnlyWithRelLocal()) return ".gnu.linkonce.d.rel.ro.local.";
+ 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 ".gnu.linkonce.d.rel.ro.";
+ return ".data.rel.ro.";
}
+
const MCSection *TargetLoweringObjectFileELF::
SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler *Mang, const TargetMachine &TM) const {
+ // If we have -ffunction-section or -fdata-section 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 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() && !Kind.isCommon() && !Kind.isBSS()) {
- const char *Prefix = getSectionPrefixForUniqueGlobal(Kind);
+ if ((GV->isWeakForLinker() || EmitUniquedSection) &&
+ !Kind.isCommon() && !Kind.isBSS()) {
+ const char *Prefix;
+ Prefix = getSectionPrefixForGlobal(Kind);
+
SmallString<128> Name(Prefix, Prefix+strlen(Prefix));
MCSymbol *Sym = Mang->getSymbol(GV);
Name.append(Sym->getName().begin(), Sym->getName().end());
+ StringRef Group = "";
+ unsigned Flags = getELFSectionFlags(Kind);
+ if (GV->isWeakForLinker()) {
+ Group = Sym->getName();
+ Flags |= ELF::SHF_GROUP;
+ }
+
return getContext().getELFSection(Name.str(),
getELFSectionType(Name.str(), Kind),
- getELFSectionFlags(Kind), Kind);
+ Flags, Kind, 0, Group);
}
if (Kind.isText()) return TextSection;
std::string Name = SizeSpec + utostr(Align);
- return getContext().getELFSection(Name, MCSectionELF::SHT_PROGBITS,
- MCSectionELF::SHF_ALLOC |
- MCSectionELF::SHF_MERGE |
- MCSectionELF::SHF_STRINGS,
+ return getContext().getELFSection(Name, ELF::SHT_PROGBITS,
+ ELF::SHF_ALLOC |
+ ELF::SHF_MERGE |
+ ELF::SHF_STRINGS,
Kind);
}
IsFunctionEHSymbolGlobal = true;
IsFunctionEHFrameSymbolPrivate = false;
SupportsWeakOmittedEHFrame = false;
-
+
+ Triple T(((LLVMTargetMachine&)TM).getTargetTriple());
+ if (T.getOS() == Triple::Darwin) {
+ switch (T.getDarwinMajorNumber()) {
+ case 7: // 10.3 Panther.
+ case 8: // 10.4 Tiger.
+ CommDirectiveSupportsAlignment = false;
+ break;
+ case 9: // 10.5 Leopard.
+ case 10: // 10.6 SnowLeopard.
+ break;
+ }
+ }
+
TargetLoweringObjectFile::Initialize(Ctx, TM);
TextSection // .text
= 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",
+ = getContext().getMachOSection("__TEXT", "__cstring",
MCSectionMachO::S_CSTRING_LITERALS,
SectionKind::getMergeable1ByteCString());
UStringSection
MCSectionMachO::S_4BYTE_LITERALS,
SectionKind::getMergeableConst4());
EightByteConstantSection // .literal8
- = getContext().getMachOSection("__TEXT", "__literal8",
+ = getContext().getMachOSection("__TEXT", "__literal8",
MCSectionMachO::S_8BYTE_LITERALS,
SectionKind::getMergeableConst8());
MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
SectionKind::getText());
ConstTextCoalSection
- = getContext().getMachOSection("__TEXT", "__const_coal",
- MCSectionMachO::S_COALESCED,
- SectionKind::getText());
- ConstDataCoalSection
- = getContext().getMachOSection("__DATA","__const_coal",
+ = getContext().getMachOSection("__TEXT", "__const_coal",
MCSectionMachO::S_COALESCED,
- SectionKind::getText());
+ SectionKind::getReadOnly());
ConstDataSection // .const_data
= getContext().getMachOSection("__DATA", "__const", 0,
SectionKind::getReadOnlyWithRel());
DataCoalSection
- = getContext().getMachOSection("__DATA","__datacoal_nt",
+ = getContext().getMachOSection("__DATA","__datacoal_nt",
MCSectionMachO::S_COALESCED,
SectionKind::getDataRel());
DataCommonSection
DataBSSSection
= getContext().getMachOSection("__DATA","__bss", MCSectionMachO::S_ZEROFILL,
SectionKind::getBSS());
-
+
LazySymbolPointerSection
= getContext().getMachOSection("__DATA", "__la_symbol_ptr",
// Exception Handling.
LSDASection = getContext().getMachOSection("__TEXT", "__gcc_except_tab", 0,
SectionKind::getReadOnlyWithRel());
- EHFrameSection =
- 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());
-
// Debug Information.
DwarfAbbrevSection =
- getContext().getMachOSection("__DWARF", "__debug_abbrev",
+ getContext().getMachOSection("__DWARF", "__debug_abbrev",
MCSectionMachO::S_ATTR_DEBUG,
SectionKind::getMetadata());
DwarfInfoSection =
getContext().getMachOSection("__DWARF", "__debug_inlined",
MCSectionMachO::S_ATTR_DEBUG,
SectionKind::getMetadata());
+
+ TLSExtraDataSection = TLSTLVSection;
+}
+
+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());
}
const MCSection *TargetLoweringObjectFileMachO::
Mangler *Mang, const TargetMachine &TM) const {
// Parse the section specifier and create it if valid.
StringRef Segment, Section;
- unsigned TAA, StubSize;
+ unsigned TAA = 0, StubSize = 0;
+ bool TAAParsed;
std::string ErrorCode =
MCSectionMachO::ParseSectionSpecifier(GV->getSection(), Segment, Section,
- TAA, StubSize);
+ TAA, TAAParsed, StubSize);
if (!ErrorCode.empty()) {
// If invalid, report the error with report_fatal_error.
report_fatal_error("Global variable '" + GV->getNameStr() +
const 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.
const MCSection *TargetLoweringObjectFileMachO::
SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler *Mang, const TargetMachine &TM) const {
- assert(!Kind.isThreadLocal() && "Darwin doesn't support TLS");
+
+ // Handle thread local data.
+ if (Kind.isThreadBSS()) return TLSBSSSection;
+ if (Kind.isThreadData()) return TLSDataSection;
if (Kind.isText())
return GV->isWeakForLinker() ? TextCoalSection : TextSection;
if (Kind.isMergeable1ByteCString() &&
TM.getTargetData()->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.
// with the .zerofill directive (aka .lcomm).
if (Kind.isBSSLocal())
return DataBSSSection;
-
+
// Otherwise, just drop the variable in the normal data section.
return DataSection;
}
// COFF
//===----------------------------------------------------------------------===//
-typedef StringMap<const MCSectionCOFF*> COFFUniqueMapTy;
-
-TargetLoweringObjectFileCOFF::~TargetLoweringObjectFileCOFF() {
- delete (COFFUniqueMapTy*)UniquingMap;
-}
-
-
-const MCSection *TargetLoweringObjectFileCOFF::
-getCOFFSection(StringRef Name, bool isDirective, SectionKind Kind) const {
- // Create the map if it doesn't already exist.
- if (UniquingMap == 0)
- UniquingMap = new COFFUniqueMapTy();
- COFFUniqueMapTy &Map = *(COFFUniqueMapTy*)UniquingMap;
-
- // Do the lookup, if we have a hit, return it.
- const MCSectionCOFF *&Entry = Map[Name];
- if (Entry) return Entry;
-
- return Entry = MCSectionCOFF::Create(Name, isDirective, Kind, getContext());
-}
-
void TargetLoweringObjectFileCOFF::Initialize(MCContext &Ctx,
const TargetMachine &TM) {
- if (UniquingMap != 0)
- ((COFFUniqueMapTy*)UniquingMap)->clear();
TargetLoweringObjectFile::Initialize(Ctx, TM);
- TextSection = getCOFFSection("\t.text", true, SectionKind::getText());
- DataSection = getCOFFSection("\t.data", true, SectionKind::getDataRel());
+ 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 =
- getCOFFSection(".ctors", false, SectionKind::getDataRel());
+ getContext().getCOFFSection(".ctors",
+ COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+ COFF::IMAGE_SCN_MEM_READ |
+ COFF::IMAGE_SCN_MEM_WRITE,
+ SectionKind::getDataRel());
StaticDtorSection =
- getCOFFSection(".dtors", false, SectionKind::getDataRel());
+ 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 =
- getCOFFSection(".gcc_except_table", false, SectionKind::getReadOnly());
- EHFrameSection =
- getCOFFSection(".eh_frame", false, SectionKind::getDataRel());
-
+ getContext().getCOFFSection(".gcc_except_table",
+ COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+ COFF::IMAGE_SCN_MEM_READ,
+ SectionKind::getReadOnly());
// Debug info.
- // FIXME: Don't use 'directive' mode here.
DwarfAbbrevSection =
- getCOFFSection("\t.section\t.debug_abbrev,\"dr\"",
- true, SectionKind::getMetadata());
+ getContext().getCOFFSection(".debug_abbrev",
+ COFF::IMAGE_SCN_MEM_DISCARDABLE |
+ COFF::IMAGE_SCN_MEM_READ,
+ SectionKind::getMetadata());
DwarfInfoSection =
- getCOFFSection("\t.section\t.debug_info,\"dr\"",
- true, SectionKind::getMetadata());
+ getContext().getCOFFSection(".debug_info",
+ COFF::IMAGE_SCN_MEM_DISCARDABLE |
+ COFF::IMAGE_SCN_MEM_READ,
+ SectionKind::getMetadata());
DwarfLineSection =
- getCOFFSection("\t.section\t.debug_line,\"dr\"",
- true, SectionKind::getMetadata());
+ getContext().getCOFFSection(".debug_line",
+ COFF::IMAGE_SCN_MEM_DISCARDABLE |
+ COFF::IMAGE_SCN_MEM_READ,
+ SectionKind::getMetadata());
DwarfFrameSection =
- getCOFFSection("\t.section\t.debug_frame,\"dr\"",
- true, SectionKind::getMetadata());
+ getContext().getCOFFSection(".debug_frame",
+ COFF::IMAGE_SCN_MEM_DISCARDABLE |
+ COFF::IMAGE_SCN_MEM_READ,
+ SectionKind::getMetadata());
DwarfPubNamesSection =
- getCOFFSection("\t.section\t.debug_pubnames,\"dr\"",
- true, SectionKind::getMetadata());
+ getContext().getCOFFSection(".debug_pubnames",
+ COFF::IMAGE_SCN_MEM_DISCARDABLE |
+ COFF::IMAGE_SCN_MEM_READ,
+ SectionKind::getMetadata());
DwarfPubTypesSection =
- getCOFFSection("\t.section\t.debug_pubtypes,\"dr\"",
- true, SectionKind::getMetadata());
+ getContext().getCOFFSection(".debug_pubtypes",
+ COFF::IMAGE_SCN_MEM_DISCARDABLE |
+ COFF::IMAGE_SCN_MEM_READ,
+ SectionKind::getMetadata());
DwarfStrSection =
- getCOFFSection("\t.section\t.debug_str,\"dr\"",
- true, SectionKind::getMetadata());
+ getContext().getCOFFSection(".debug_str",
+ COFF::IMAGE_SCN_MEM_DISCARDABLE |
+ COFF::IMAGE_SCN_MEM_READ,
+ SectionKind::getMetadata());
DwarfLocSection =
- getCOFFSection("\t.section\t.debug_loc,\"dr\"",
- true, SectionKind::getMetadata());
+ getContext().getCOFFSection(".debug_loc",
+ COFF::IMAGE_SCN_MEM_DISCARDABLE |
+ COFF::IMAGE_SCN_MEM_READ,
+ SectionKind::getMetadata());
DwarfARangesSection =
- getCOFFSection("\t.section\t.debug_aranges,\"dr\"",
- true, SectionKind::getMetadata());
+ getContext().getCOFFSection(".debug_aranges",
+ COFF::IMAGE_SCN_MEM_DISCARDABLE |
+ COFF::IMAGE_SCN_MEM_READ,
+ SectionKind::getMetadata());
DwarfRangesSection =
- getCOFFSection("\t.section\t.debug_ranges,\"dr\"",
- true, SectionKind::getMetadata());
+ getContext().getCOFFSection(".debug_ranges",
+ COFF::IMAGE_SCN_MEM_DISCARDABLE |
+ COFF::IMAGE_SCN_MEM_READ,
+ SectionKind::getMetadata());
DwarfMacroInfoSection =
- getCOFFSection("\t.section\t.debug_macinfo,\"dr\"",
- true, SectionKind::getMetadata());
+ 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());
+}
+
+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;
+
+ 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.isReadOnly())
+ 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;
}
const MCSection *TargetLoweringObjectFileCOFF::
getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler *Mang, const TargetMachine &TM) const {
- return getCOFFSection(GV->getSection(), false, Kind);
+ return getContext().getCOFFSection(GV->getSection(),
+ getCOFFSectionFlags(Kind),
+ Kind);
}
static const char *getCOFFSectionPrefixForUniqueGlobal(SectionKind Kind) {
if (Kind.isText())
- return ".text$linkonce";
+ return ".text$";
+ if (Kind.isBSS ())
+ return ".bss$";
if (Kind.isWriteable())
- return ".data$linkonce";
- return ".rdata$linkonce";
+ return ".data$";
+ return ".rdata$";
}
const char *Prefix = getCOFFSectionPrefixForUniqueGlobal(Kind);
SmallString<128> Name(Prefix, Prefix+strlen(Prefix));
MCSymbol *Sym = Mang->getSymbol(GV);
- Name.append(Sym->getName().begin(), Sym->getName().end());
- return getCOFFSection(Name.str(), false, Kind);
+ Name.append(Sym->getName().begin() + 1, Sym->getName().end());
+
+ unsigned Characteristics = getCOFFSectionFlags(Kind);
+
+ Characteristics |= COFF::IMAGE_SCN_LNK_COMDAT;
+
+ return getContext().getCOFFSection(Name.str(), Characteristics,
+ COFF::IMAGE_COMDAT_SELECT_ANY, Kind);
}
if (Kind.isText())
projects / oota-llvm.git / blobdiff