TargetLoweringObjectFile::TargetLoweringObjectFile() : Ctx(0) {
TextSection = 0;
DataSection = 0;
- BSSSection_ = 0;
+ BSSSection = 0;
ReadOnlySection = 0;
- TLSDataSection = 0;
- TLSBSSSection = 0;
- CStringSection_ = 0;
+ StaticCtorSection = 0;
+ StaticDtorSection = 0;
+ LSDASection = 0;
+ EHFrameSection = 0;
+
+ DwarfAbbrevSection = 0;
+ DwarfInfoSection = 0;
+ DwarfLineSection = 0;
+ DwarfFrameSection = 0;
+ DwarfPubNamesSection = 0;
+ DwarfPubTypesSection = 0;
+ DwarfDebugInlineSection = 0;
+ DwarfStrSection = 0;
+ DwarfLocSection = 0;
+ DwarfARangesSection = 0;
+ DwarfRangesSection = 0;
+ DwarfMacroInfoSection = 0;
}
TargetLoweringObjectFile::~TargetLoweringObjectFile() {
return true;
}
-static bool isConstantString(const Constant *C) {
+/// IsNullTerminatedString - Return true if the specified constant (which is
+/// known to have a type that is an array of 1/2/4 byte elements) ends with a
+/// nul value and contains no other nuls in it.
+static bool IsNullTerminatedString(const Constant *C) {
+ const ArrayType *ATy = cast<ArrayType>(C->getType());
+
// First check: is we have constant array of i8 terminated with zero
- const ConstantArray *CVA = dyn_cast<ConstantArray>(C);
- // Check, if initializer is a null-terminated string
- if (CVA && CVA->isCString())
+ if (const ConstantArray *CVA = dyn_cast<ConstantArray>(C)) {
+ if (ATy->getNumElements() == 0) return false;
+
+ ConstantInt *Null =
+ dyn_cast<ConstantInt>(CVA->getOperand(ATy->getNumElements()-1));
+ if (Null == 0 || Null->getZExtValue() != 0)
+ return false; // Not null terminated.
+
+ // Verify that the null doesn't occur anywhere else in the string.
+ for (unsigned i = 0, e = ATy->getNumElements()-1; i != e; ++i)
+ // Reject constantexpr elements etc.
+ if (!isa<ConstantInt>(CVA->getOperand(i)) ||
+ CVA->getOperand(i) == Null)
+ return false;
return true;
+ }
// Another possibility: [1 x i8] zeroinitializer
if (isa<ConstantAggregateZero>(C))
- if (const ArrayType *Ty = dyn_cast<ArrayType>(C->getType()))
- return (Ty->getElementType() == Type::Int8Ty &&
- Ty->getNumElements() == 1);
+ return ATy->getNumElements() == 1;
return false;
}
-/// SectionKindForGlobal - This is a top-level target-independent classifier for
+/// getKindForGlobal - This is a top-level target-independent classifier for
/// a global variable. Given an global variable and information from TM, it
/// classifies the global in a variety of ways that make various target
/// implementations simpler. The target implementation is free to ignore this
/// extra info of course.
-static SectionKind SectionKindForGlobal(const GlobalValue *GV,
- const TargetMachine &TM) {
+SectionKind TargetLoweringObjectFile::getKindForGlobal(const GlobalValue *GV,
+ const TargetMachine &TM){
+ assert(!GV->isDeclaration() && !GV->hasAvailableExternallyLinkage() &&
+ "Can only be used for global definitions");
+
Reloc::Model ReloModel = TM.getRelocationModel();
// Early exit - functions should be always in text sections.
const GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV);
if (GVar == 0)
- return SectionKind::get(SectionKind::Text);
+ return SectionKind::getText();
// Handle thread-local data first.
if (GVar->isThreadLocal()) {
if (isSuitableForBSS(GVar))
- return SectionKind::get(SectionKind::ThreadBSS);
- return SectionKind::get(SectionKind::ThreadData);
+ return SectionKind::getThreadBSS();
+ return SectionKind::getThreadData();
}
// Variable can be easily put to BSS section.
if (isSuitableForBSS(GVar))
- return SectionKind::get(SectionKind::BSS);
+ return SectionKind::getBSS();
Constant *C = GVar->getInitializer();
default: llvm_unreachable("unknown relocation info kind");
case Constant::NoRelocation:
// If initializer is a null-terminated string, put it in a "cstring"
- // section if the target has it.
- if (isConstantString(C))
- return SectionKind::get(SectionKind::MergeableCString);
-
+ // section of the right width.
+ if (const ArrayType *ATy = dyn_cast<ArrayType>(C->getType())) {
+ if (const IntegerType *ITy =
+ dyn_cast<IntegerType>(ATy->getElementType())) {
+ if ((ITy->getBitWidth() == 8 || ITy->getBitWidth() == 16 ||
+ ITy->getBitWidth() == 32) &&
+ IsNullTerminatedString(C)) {
+ if (ITy->getBitWidth() == 8)
+ return SectionKind::getMergeable1ByteCString();
+ if (ITy->getBitWidth() == 16)
+ return SectionKind::getMergeable2ByteCString();
+
+ assert(ITy->getBitWidth() == 32 && "Unknown width");
+ return SectionKind::getMergeable4ByteCString();
+ }
+ }
+ }
+
// Otherwise, just drop it into a mergable constant section. If we have
// a section for this size, use it, otherwise use the arbitrary sized
// mergable section.
switch (TM.getTargetData()->getTypeAllocSize(C->getType())) {
- case 4: return SectionKind::get(SectionKind::MergeableConst4);
- case 8: return SectionKind::get(SectionKind::MergeableConst8);
- case 16: return SectionKind::get(SectionKind::MergeableConst16);
- default: return SectionKind::get(SectionKind::MergeableConst);
+ case 4: return SectionKind::getMergeableConst4();
+ case 8: return SectionKind::getMergeableConst8();
+ case 16: return SectionKind::getMergeableConst16();
+ default: return SectionKind::getMergeableConst();
}
case Constant::LocalRelocation:
// the linker doesn't take relocations into consideration when it tries to
// merge entries in the section.
if (ReloModel == Reloc::Static)
- return SectionKind::get(SectionKind::ReadOnly);
+ return SectionKind::getReadOnly();
// Otherwise, the dynamic linker needs to fix it up, put it in the
// writable data.rel.local section.
- return SectionKind::get(SectionKind::ReadOnlyWithRelLocal);
+ return SectionKind::getReadOnlyWithRelLocal();
case Constant::GlobalRelocations:
// In static relocation model, the linker will resolve all addresses, so
// the linker doesn't take relocations into consideration when it tries to
// merge entries in the section.
if (ReloModel == Reloc::Static)
- return SectionKind::get(SectionKind::ReadOnly);
+ return SectionKind::getReadOnly();
// Otherwise, the dynamic linker needs to fix it up, put it in the
// writable data.rel section.
- return SectionKind::get(SectionKind::ReadOnlyWithRel);
+ return SectionKind::getReadOnlyWithRel();
}
}
// globals together onto fewer pages, improving the locality of the dynamic
// linker.
if (ReloModel == Reloc::Static)
- return SectionKind::get(SectionKind::DataNoRel);
+ return SectionKind::getDataNoRel();
switch (C->getRelocationInfo()) {
default: llvm_unreachable("unknown relocation info kind");
case Constant::NoRelocation:
- return SectionKind::get(SectionKind::DataNoRel);
+ return SectionKind::getDataNoRel();
case Constant::LocalRelocation:
- return SectionKind::get(SectionKind::DataRelLocal);
+ return SectionKind::getDataRelLocal();
case Constant::GlobalRelocations:
- return SectionKind::get(SectionKind::DataRel);
+ return SectionKind::getDataRel();
}
}
/// the specified global variable or function definition. This should not
/// be passed external (or available externally) globals.
const MCSection *TargetLoweringObjectFile::
-SectionForGlobal(const GlobalValue *GV, Mangler *Mang,
+SectionForGlobal(const GlobalValue *GV, SectionKind Kind, Mangler *Mang,
const TargetMachine &TM) const {
- assert(!GV->isDeclaration() && !GV->hasAvailableExternallyLinkage() &&
- "Can only be used for global definitions");
-
- SectionKind Kind = SectionKindForGlobal(GV, TM);
-
// Select section name.
if (GV->hasSection()) {
// If the target has special section hacks for specifically named globals,
return SelectSectionForGlobal(GV, Kind, Mang, TM);
}
+
// Lame default implementation. Calculate the section name for global.
const MCSection *
TargetLoweringObjectFile::SelectSectionForGlobal(const GlobalValue *GV,
if (Kind.isText())
return getTextSection();
- if (Kind.isBSS() && BSSSection_ != 0)
- return BSSSection_;
+ if (Kind.isBSS() && BSSSection != 0)
+ return BSSSection;
if (Kind.isReadOnly() && ReadOnlySection != 0)
return ReadOnlySection;
return getDataSection();
}
-/// getSectionForMergableConstant - Given a mergable constant with the
+/// getSectionForConstant - Given a mergable constant with the
/// specified size and relocation information, return a section that it
/// should be placed in.
const MCSection *
-TargetLoweringObjectFile::
-getSectionForMergeableConstant(SectionKind Kind) const {
+TargetLoweringObjectFile::getSectionForConstant(SectionKind Kind) const {
if (Kind.isReadOnly() && ReadOnlySection != 0)
return ReadOnlySection;
const TargetMachine &TM) {
TargetLoweringObjectFile::Initialize(Ctx, TM);
if (!HasCrazyBSS)
- BSSSection_ = getOrCreateSection("\t.bss", true,
- SectionKind::get(SectionKind::BSS));
+ BSSSection = getOrCreateSection("\t.bss", true, SectionKind::getBSS());
else
// PPC/Linux doesn't support the .bss directive, it needs .section .bss.
// FIXME: Does .section .bss work everywhere??
// FIXME2: this should just be handle by the section printer. We should get
// away from syntactic view of the sections and MCSection should just be a
// semantic view.
- BSSSection_ = getOrCreateSection("\t.bss", false,
- SectionKind::get(SectionKind::BSS));
+ BSSSection = getOrCreateSection("\t.bss", false, SectionKind::getBSS());
- TextSection = getOrCreateSection("\t.text", true,
- SectionKind::get(SectionKind::Text));
- DataSection = getOrCreateSection("\t.data", true,
- SectionKind::get(SectionKind::DataRel));
+ TextSection = getOrCreateSection("\t.text", true, SectionKind::getText());
+ DataSection = getOrCreateSection("\t.data", true, SectionKind::getDataRel());
ReadOnlySection =
- getOrCreateSection("\t.rodata", false,
- SectionKind::get(SectionKind::ReadOnly));
+ getOrCreateSection("\t.rodata", false, SectionKind::getReadOnly());
TLSDataSection =
- getOrCreateSection("\t.tdata", false,
- SectionKind::get(SectionKind::ThreadData));
- CStringSection_ = getOrCreateSection("\t.rodata.str", true,
- SectionKind::get(SectionKind::MergeableCString));
-
+ getOrCreateSection("\t.tdata", false, SectionKind::getThreadData());
+
TLSBSSSection = getOrCreateSection("\t.tbss", false,
- SectionKind::get(SectionKind::ThreadBSS));
+ SectionKind::getThreadBSS());
DataRelSection = getOrCreateSection("\t.data.rel", false,
- SectionKind::get(SectionKind::DataRel));
+ SectionKind::getDataRel());
DataRelLocalSection = getOrCreateSection("\t.data.rel.local", false,
- SectionKind::get(SectionKind::DataRelLocal));
+ SectionKind::getDataRelLocal());
DataRelROSection = getOrCreateSection("\t.data.rel.ro", false,
- SectionKind::get(SectionKind::ReadOnlyWithRel));
+ SectionKind::getReadOnlyWithRel());
DataRelROLocalSection =
getOrCreateSection("\t.data.rel.ro.local", false,
- SectionKind::get(SectionKind::ReadOnlyWithRelLocal));
+ SectionKind::getReadOnlyWithRelLocal());
MergeableConst4Section = getOrCreateSection(".rodata.cst4", false,
- SectionKind::get(SectionKind::MergeableConst4));
+ SectionKind::getMergeableConst4());
MergeableConst8Section = getOrCreateSection(".rodata.cst8", false,
- SectionKind::get(SectionKind::MergeableConst8));
+ SectionKind::getMergeableConst8());
MergeableConst16Section = getOrCreateSection(".rodata.cst16", false,
- SectionKind::get(SectionKind::MergeableConst16));
+ SectionKind::getMergeableConst16());
+
+ StaticCtorSection =
+ getOrCreateSection(".ctors", false, SectionKind::getDataRel());
+ StaticDtorSection =
+ getOrCreateSection(".dtors", false, 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 =
+ getOrCreateSection(".gcc_except_table", false, SectionKind::getReadOnly());
+ EHFrameSection =
+ getOrCreateSection(".eh_frame", false, SectionKind::getDataRel());
+
+ // Debug Info Sections.
+ DwarfAbbrevSection =
+ getOrCreateSection(".debug_abbrev", false, SectionKind::getMetadata());
+ DwarfInfoSection =
+ getOrCreateSection(".debug_info", false, SectionKind::getMetadata());
+ DwarfLineSection =
+ getOrCreateSection(".debug_line", false, SectionKind::getMetadata());
+ DwarfFrameSection =
+ getOrCreateSection(".debug_frame", false, SectionKind::getMetadata());
+ DwarfPubNamesSection =
+ getOrCreateSection(".debug_pubnames", false, SectionKind::getMetadata());
+ DwarfPubTypesSection =
+ getOrCreateSection(".debug_pubtypes", false, SectionKind::getMetadata());
+ DwarfStrSection =
+ getOrCreateSection(".debug_str", false, SectionKind::getMetadata());
+ DwarfLocSection =
+ getOrCreateSection(".debug_loc", false, SectionKind::getMetadata());
+ DwarfARangesSection =
+ getOrCreateSection(".debug_aranges", false, SectionKind::getMetadata());
+ DwarfRangesSection =
+ getOrCreateSection(".debug_ranges", false, SectionKind::getMetadata());
+ DwarfMacroInfoSection =
+ getOrCreateSection(".debug_macinfo", false, SectionKind::getMetadata());
}
strncmp(Name, ".llvm.linkonce.b.", 17) == 0 ||
strncmp(Name, ".gnu.linkonce.sb.", 17) == 0 ||
strncmp(Name, ".llvm.linkonce.sb.", 18) == 0)
- return SectionKind::get(SectionKind::BSS);
+ return SectionKind::getBSS();
if (strcmp(Name, ".tdata") == 0 ||
strncmp(Name, ".tdata.", 7) == 0 ||
strncmp(Name, ".gnu.linkonce.td.", 17) == 0 ||
strncmp(Name, ".llvm.linkonce.td.", 18) == 0)
- return SectionKind::get(SectionKind::ThreadData);
+ return SectionKind::getThreadData();
if (strcmp(Name, ".tbss") == 0 ||
strncmp(Name, ".tbss.", 6) == 0 ||
strncmp(Name, ".gnu.linkonce.tb.", 17) == 0 ||
strncmp(Name, ".llvm.linkonce.tb.", 18) == 0)
- return SectionKind::get(SectionKind::ThreadBSS);
+ return SectionKind::getThreadBSS();
return K;
}
Str.push_back('x');
if (Kind.isWriteable())
Str.push_back('w');
- if (Kind.isMergeableCString() ||
+ if (Kind.isMergeable1ByteCString() ||
+ Kind.isMergeable2ByteCString() ||
+ Kind.isMergeable4ByteCString() ||
Kind.isMergeableConst4() ||
Kind.isMergeableConst8() ||
Kind.isMergeableConst16())
Str.push_back('M');
- if (Kind.isMergeableCString())
+ if (Kind.isMergeable1ByteCString() ||
+ Kind.isMergeable2ByteCString() ||
+ Kind.isMergeable4ByteCString())
Str.push_back('S');
if (Kind.isThreadLocal())
Str.push_back('T');
Str.append(KindStr, KindStr+strlen(KindStr));
- if (Kind.isMergeableCString()) {
- // TODO: Eventually handle multiple byte character strings. For now, all
- // mergable C strings are single byte.
+ if (Kind.isMergeable1ByteCString()) {
Str.push_back(',');
Str.push_back('1');
+ } else if (Kind.isMergeable2ByteCString()) {
+ Str.push_back(',');
+ Str.push_back('2');
+ } else if (Kind.isMergeable4ByteCString()) {
+ Str.push_back(',');
+ Str.push_back('4');
} else if (Kind.isMergeableConst4()) {
Str.push_back(',');
Str.push_back('4');
if (Kind.isText()) return TextSection;
- if (Kind.isMergeableCString()) {
- assert(CStringSection_ && "Should have string section prefix");
+ if (Kind.isMergeable1ByteCString() ||
+ Kind.isMergeable2ByteCString() ||
+ Kind.isMergeable4ByteCString()) {
// We also need alignment here.
// FIXME: this is getting the alignment of the character, not the
unsigned Align =
TM.getTargetData()->getPreferredAlignment(cast<GlobalVariable>(GV));
- std::string Name = CStringSection_->getName() + "1." + utostr(Align);
- return getOrCreateSection(Name.c_str(), false,
- SectionKind::get(SectionKind::MergeableCString));
+ const char *SizeSpec = ".rodata.str1.";
+ if (Kind.isMergeable2ByteCString())
+ SizeSpec = ".rodata.str2.";
+ else if (Kind.isMergeable4ByteCString())
+ SizeSpec = ".rodata.str4.";
+ else
+ assert(Kind.isMergeable1ByteCString() && "unknown string width");
+
+
+ std::string Name = SizeSpec + utostr(Align);
+ return getOrCreateSection(Name.c_str(), false, Kind);
}
if (Kind.isMergeableConst()) {
if (Kind.isThreadData()) return TLSDataSection;
if (Kind.isThreadBSS()) return TLSBSSSection;
- if (Kind.isBSS()) return BSSSection_;
+ if (Kind.isBSS()) return BSSSection;
if (Kind.isDataNoRel()) return DataSection;
if (Kind.isDataRelLocal()) return DataRelLocalSection;
return DataRelROSection;
}
-/// getSectionForMergeableConstant - Given a mergeable constant with the
+/// getSectionForConstant - Given a mergeable constant with the
/// specified size and relocation information, return a section that it
/// should be placed in.
const MCSection *TargetLoweringObjectFileELF::
-getSectionForMergeableConstant(SectionKind Kind) const {
+getSectionForConstant(SectionKind Kind) const {
if (Kind.isMergeableConst4())
return MergeableConst4Section;
if (Kind.isMergeableConst8())
// MachO
//===----------------------------------------------------------------------===//
+const MCSection *TargetLoweringObjectFileMachO::
+getMachOSection(const char *Name, bool isDirective, SectionKind K) {
+ // FOR NOW, Just forward.
+ return getOrCreateSection(Name, isDirective, K);
+}
+
+
+
void TargetLoweringObjectFileMachO::Initialize(MCContext &Ctx,
const TargetMachine &TM) {
TargetLoweringObjectFile::Initialize(Ctx, TM);
TextSection = getOrCreateSection("\t.text", true,
- SectionKind::get(SectionKind::Text));
+ SectionKind::getText());
DataSection = getOrCreateSection("\t.data", true,
- SectionKind::get(SectionKind::DataRel));
+ SectionKind::getDataRel());
- CStringSection_ = getOrCreateSection("\t.cstring", true,
- SectionKind::get(SectionKind::MergeableCString));
+ CStringSection = getOrCreateSection("\t.cstring", true,
+ SectionKind::getMergeable1ByteCString());
+ UStringSection = getOrCreateSection("__TEXT,__ustring", false,
+ SectionKind::getMergeable2ByteCString());
FourByteConstantSection = getOrCreateSection("\t.literal4\n", true,
- SectionKind::get(SectionKind::MergeableConst4));
+ SectionKind::getMergeableConst4());
EightByteConstantSection = getOrCreateSection("\t.literal8\n", true,
- SectionKind::get(SectionKind::MergeableConst8));
+ SectionKind::getMergeableConst8());
// ld_classic doesn't support .literal16 in 32-bit mode, and ld64 falls back
// to using it in -static mode.
TM.getTargetData()->getPointerSize() == 32)
SixteenByteConstantSection =
getOrCreateSection("\t.literal16\n", true,
- SectionKind::get(SectionKind::MergeableConst16));
+ SectionKind::getMergeableConst16());
else
SixteenByteConstantSection = 0;
ReadOnlySection = getOrCreateSection("\t.const", true,
- SectionKind::get(SectionKind::ReadOnly));
+ SectionKind::getReadOnly());
TextCoalSection =
getOrCreateSection("\t__TEXT,__textcoal_nt,coalesced,pure_instructions",
- false, SectionKind::get(SectionKind::Text));
+ false, SectionKind::getText());
ConstTextCoalSection = getOrCreateSection("\t__TEXT,__const_coal,coalesced",
false,
- SectionKind::get(SectionKind::Text));
+ SectionKind::getText());
ConstDataCoalSection = getOrCreateSection("\t__DATA,__const_coal,coalesced",
false,
- SectionKind::get(SectionKind::Text));
+ SectionKind::getText());
ConstDataSection = getOrCreateSection("\t.const_data", true,
- SectionKind::get(SectionKind::ReadOnlyWithRel));
+ SectionKind::getReadOnlyWithRel());
DataCoalSection = getOrCreateSection("\t__DATA,__datacoal_nt,coalesced",
false,
- SectionKind::get(SectionKind::DataRel));
+ SectionKind::getDataRel());
+
+ if (TM.getRelocationModel() == Reloc::Static) {
+ StaticCtorSection =
+ getOrCreateSection(".constructor", true, SectionKind::getDataRel());
+ StaticDtorSection =
+ getOrCreateSection(".destructor", true, SectionKind::getDataRel());
+ } else {
+ StaticCtorSection =
+ getOrCreateSection(".mod_init_func", true, SectionKind::getDataRel());
+ StaticDtorSection =
+ getOrCreateSection(".mod_term_func", true, SectionKind::getDataRel());
+ }
+
+ // Exception Handling.
+ LSDASection = getOrCreateSection("__DATA,__gcc_except_tab", false,
+ SectionKind::getDataRel());
+ EHFrameSection =
+ getOrCreateSection("__TEXT,__eh_frame,coalesced,no_toc+strip_static_syms"
+ "+live_support", false, SectionKind::getReadOnly());
+
+ // Debug Information.
+ // FIXME: Don't use 'directive' syntax: need flags for debug/regular??
+ // FIXME: Need __DWARF segment.
+ DwarfAbbrevSection =
+ getOrCreateSection(".section __DWARF,__debug_abbrev,regular,debug", true,
+ SectionKind::getMetadata());
+ DwarfInfoSection =
+ getOrCreateSection(".section __DWARF,__debug_info,regular,debug", true,
+ SectionKind::getMetadata());
+ DwarfLineSection =
+ getOrCreateSection(".section __DWARF,__debug_line,regular,debug", true,
+ SectionKind::getMetadata());
+ DwarfFrameSection =
+ getOrCreateSection(".section __DWARF,__debug_frame,regular,debug", true,
+ SectionKind::getMetadata());
+ DwarfPubNamesSection =
+ getOrCreateSection(".section __DWARF,__debug_pubnames,regular,debug", true,
+ SectionKind::getMetadata());
+ DwarfPubTypesSection =
+ getOrCreateSection(".section __DWARF,__debug_pubtypes,regular,debug", true,
+ SectionKind::getMetadata());
+ DwarfStrSection =
+ getOrCreateSection(".section __DWARF,__debug_str,regular,debug", true,
+ SectionKind::getMetadata());
+ DwarfLocSection =
+ getOrCreateSection(".section __DWARF,__debug_loc,regular,debug", true,
+ SectionKind::getMetadata());
+ DwarfARangesSection =
+ getOrCreateSection(".section __DWARF,__debug_aranges,regular,debug", true,
+ SectionKind::getMetadata());
+ DwarfRangesSection =
+ getOrCreateSection(".section __DWARF,__debug_ranges,regular,debug", true,
+ SectionKind::getMetadata());
+ DwarfMacroInfoSection =
+ getOrCreateSection(".section __DWARF,__debug_macinfo,regular,debug", true,
+ SectionKind::getMetadata());
+ DwarfDebugInlineSection =
+ getOrCreateSection(".section __DWARF,__debug_inlined,regular,debug", true,
+ SectionKind::getMetadata());
}
const MCSection *TargetLoweringObjectFileMachO::
}
// FIXME: Alignment check should be handled by section classifier.
- if (Kind.isMergeableCString()) {
- Constant *C = cast<GlobalVariable>(GV)->getInitializer();
- const Type *Ty = cast<ArrayType>(C->getType())->getElementType();
- const TargetData &TD = *TM.getTargetData();
- unsigned Size = TD.getTypeAllocSize(Ty);
- if (Size) {
- unsigned Align = TD.getPreferredAlignment(cast<GlobalVariable>(GV));
- if (Align <= 32)
- return CStringSection_;
+ if (Kind.isMergeable1ByteCString() ||
+ Kind.isMergeable2ByteCString()) {
+ if (TM.getTargetData()->getPreferredAlignment(
+ cast<GlobalVariable>(GV)) < 32) {
+ if (Kind.isMergeable1ByteCString())
+ return CStringSection;
+ assert(Kind.isMergeable2ByteCString());
+ return UStringSection;
}
-
- return ReadOnlySection;
}
if (Kind.isMergeableConst()) {
return EightByteConstantSection;
if (Kind.isMergeableConst16() && SixteenByteConstantSection)
return SixteenByteConstantSection;
- return ReadOnlySection; // .const
}
-
- // FIXME: ROData -> const in -static mode that is relocatable but they happen
- // by the static linker. Why not mergeable?
+
+ // Otherwise, if it is readonly, but not something we can specially optimize,
+ // just drop it in .const.
if (Kind.isReadOnly())
return ReadOnlySection;
}
const MCSection *
-TargetLoweringObjectFileMachO::
-getSectionForMergeableConstant(SectionKind Kind) const {
+TargetLoweringObjectFileMachO::getSectionForConstant(SectionKind Kind) const {
// If this constant requires a relocation, we have to put it in the data
// segment, not in the text segment.
if (Kind.isDataRel())
// COFF
//===----------------------------------------------------------------------===//
+const MCSection *TargetLoweringObjectFileCOFF::
+getCOFFSection(const char *Name, bool isDirective, SectionKind K) {
+ return getOrCreateSection(Name, isDirective, K);
+}
+
void TargetLoweringObjectFileCOFF::Initialize(MCContext &Ctx,
const TargetMachine &TM) {
TargetLoweringObjectFile::Initialize(Ctx, TM);
TextSection = getOrCreateSection("\t.text", true,
- SectionKind::get(SectionKind::Text));
+ SectionKind::getText());
DataSection = getOrCreateSection("\t.data", true,
- SectionKind::get(SectionKind::DataRel));
+ SectionKind::getDataRel());
+ StaticCtorSection =
+ getOrCreateSection(".ctors", false, SectionKind::getDataRel());
+ StaticDtorSection =
+ getOrCreateSection(".dtors", false, SectionKind::getDataRel());
+
+
+ // Debug info.
+ // FIXME: Don't use 'directive' mode here.
+ DwarfAbbrevSection =
+ getOrCreateSection("\t.section\t.debug_abbrev,\"dr\"",
+ true, SectionKind::getMetadata());
+ DwarfInfoSection =
+ getOrCreateSection("\t.section\t.debug_info,\"dr\"",
+ true, SectionKind::getMetadata());
+ DwarfLineSection =
+ getOrCreateSection("\t.section\t.debug_line,\"dr\"",
+ true, SectionKind::getMetadata());
+ DwarfFrameSection =
+ getOrCreateSection("\t.section\t.debug_frame,\"dr\"",
+ true, SectionKind::getMetadata());
+ DwarfPubNamesSection =
+ getOrCreateSection("\t.section\t.debug_pubnames,\"dr\"",
+ true, SectionKind::getMetadata());
+ DwarfPubTypesSection =
+ getOrCreateSection("\t.section\t.debug_pubtypes,\"dr\"",
+ true, SectionKind::getMetadata());
+ DwarfStrSection =
+ getOrCreateSection("\t.section\t.debug_str,\"dr\"",
+ true, SectionKind::getMetadata());
+ DwarfLocSection =
+ getOrCreateSection("\t.section\t.debug_loc,\"dr\"",
+ true, SectionKind::getMetadata());
+ DwarfARangesSection =
+ getOrCreateSection("\t.section\t.debug_aranges,\"dr\"",
+ true, SectionKind::getMetadata());
+ DwarfRangesSection =
+ getOrCreateSection("\t.section\t.debug_ranges,\"dr\"",
+ true, SectionKind::getMetadata());
+ DwarfMacroInfoSection =
+ getOrCreateSection("\t.section\t.debug_macinfo,\"dr\"",
+ true, SectionKind::getMetadata());
}
void TargetLoweringObjectFileCOFF::
if (Kind.isText())
return getTextSection();
- if (Kind.isReadOnly() && ReadOnlySection != 0)
- return ReadOnlySection;
-
return getDataSection();
}
projects / oota-llvm.git / blobdiff