#include "llvm/DerivedTypes.h"
#include "llvm/GlobalVariable.h"
#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCSection.h"
-#include "llvm/Target/TargetMachine.h"
+#include "llvm/MC/MCSectionMachO.h"
+#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Support/Mangler.h"
#include "llvm/ADT/StringExtras.h"
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.
/// 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 them now.
- if (const MCSection *TS = getSpecialCasedSectionGlobals(GV, Mang, Kind))
- return TS;
-
- // If the target has magic semantics for certain section names, make sure to
- // pick up the flags. This allows the user to write things with attribute
- // section and still get the appropriate section flags printed.
- Kind = getKindForNamedSection(GV->getSection().c_str(), Kind);
-
- return getOrCreateSection(GV->getSection().c_str(), false, Kind);
- }
-
+ if (GV->hasSection())
+ return getExplicitSectionGlobal(GV, Kind, Mang, TM);
+
// Use default section depending on the 'type' of global
return SelectSectionForGlobal(GV, Kind, Mang, TM);
}
+
// Lame default implementation. Calculate the section name for global.
const MCSection *
TargetLoweringObjectFile::SelectSectionForGlobal(const GlobalValue *GV,
}
-const MCSection *TargetLoweringObjectFile::
-getOrCreateSection(const char *Name, bool isDirective, SectionKind Kind) const {
- if (MCSection *S = Ctx->GetSection(Name))
- return S;
- return MCSection::Create(Name, isDirective, Kind, *Ctx);
-}
-
-
//===----------------------------------------------------------------------===//
// ELF
//===----------------------------------------------------------------------===//
+const MCSection *TargetLoweringObjectFileELF::
+getELFSection(const char *Name, bool isDirective, SectionKind Kind) const {
+ if (MCSection *S = getContext().GetSection(Name))
+ return S;
+ return MCSectionELF::Create(Name, isDirective, Kind, getContext());
+}
+
void TargetLoweringObjectFileELF::Initialize(MCContext &Ctx,
const TargetMachine &TM) {
TargetLoweringObjectFile::Initialize(Ctx, TM);
if (!HasCrazyBSS)
- BSSSection = getOrCreateSection("\t.bss", true, SectionKind::getBSS());
+ BSSSection = getELFSection("\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::getBSS());
+ BSSSection = getELFSection("\t.bss", false, SectionKind::getBSS());
- TextSection = getOrCreateSection("\t.text", true, SectionKind::getText());
- DataSection = getOrCreateSection("\t.data", true, SectionKind::getDataRel());
+ TextSection = getELFSection("\t.text", true, SectionKind::getText());
+ DataSection = getELFSection("\t.data", true, SectionKind::getDataRel());
ReadOnlySection =
- getOrCreateSection("\t.rodata", false, SectionKind::getReadOnly());
+ getELFSection("\t.rodata", false, SectionKind::getReadOnly());
TLSDataSection =
- getOrCreateSection("\t.tdata", false, SectionKind::getThreadData());
+ getELFSection("\t.tdata", false, SectionKind::getThreadData());
- TLSBSSSection = getOrCreateSection("\t.tbss", false,
+ TLSBSSSection = getELFSection("\t.tbss", false,
SectionKind::getThreadBSS());
- DataRelSection = getOrCreateSection("\t.data.rel", false,
+ DataRelSection = getELFSection("\t.data.rel", false,
SectionKind::getDataRel());
- DataRelLocalSection = getOrCreateSection("\t.data.rel.local", false,
+ DataRelLocalSection = getELFSection("\t.data.rel.local", false,
SectionKind::getDataRelLocal());
- DataRelROSection = getOrCreateSection("\t.data.rel.ro", false,
+ DataRelROSection = getELFSection("\t.data.rel.ro", false,
SectionKind::getReadOnlyWithRel());
DataRelROLocalSection =
- getOrCreateSection("\t.data.rel.ro.local", false,
+ getELFSection("\t.data.rel.ro.local", false,
SectionKind::getReadOnlyWithRelLocal());
- MergeableConst4Section = getOrCreateSection(".rodata.cst4", false,
+ MergeableConst4Section = getELFSection(".rodata.cst4", false,
SectionKind::getMergeableConst4());
- MergeableConst8Section = getOrCreateSection(".rodata.cst8", false,
+ MergeableConst8Section = getELFSection(".rodata.cst8", false,
SectionKind::getMergeableConst8());
- MergeableConst16Section = getOrCreateSection(".rodata.cst16", false,
+ MergeableConst16Section = getELFSection(".rodata.cst16", false,
SectionKind::getMergeableConst16());
StaticCtorSection =
- getOrCreateSection(".ctors", false, SectionKind::getDataRel());
+ getELFSection(".ctors", false, SectionKind::getDataRel());
StaticDtorSection =
- getOrCreateSection(".dtors", false, SectionKind::getDataRel());
+ getELFSection(".dtors", false, 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 =
- getOrCreateSection(".gcc_except_table", false, SectionKind::getReadOnly());
+ getELFSection(".gcc_except_table", false, SectionKind::getReadOnly());
EHFrameSection =
- getOrCreateSection(".eh_frame", false, SectionKind::getDataRel());
+ getELFSection(".eh_frame", false, SectionKind::getDataRel());
// Debug Info Sections.
DwarfAbbrevSection =
- getOrCreateSection(".debug_abbrev", false, SectionKind::getMetadata());
+ getELFSection(".debug_abbrev", false, SectionKind::getMetadata());
DwarfInfoSection =
- getOrCreateSection(".debug_info", false, SectionKind::getMetadata());
+ getELFSection(".debug_info", false, SectionKind::getMetadata());
DwarfLineSection =
- getOrCreateSection(".debug_line", false, SectionKind::getMetadata());
+ getELFSection(".debug_line", false, SectionKind::getMetadata());
DwarfFrameSection =
- getOrCreateSection(".debug_frame", false, SectionKind::getMetadata());
+ getELFSection(".debug_frame", false, SectionKind::getMetadata());
DwarfPubNamesSection =
- getOrCreateSection(".debug_pubnames", false, SectionKind::getMetadata());
+ getELFSection(".debug_pubnames", false, SectionKind::getMetadata());
DwarfPubTypesSection =
- getOrCreateSection(".debug_pubtypes", false, SectionKind::getMetadata());
+ getELFSection(".debug_pubtypes", false, SectionKind::getMetadata());
DwarfStrSection =
- getOrCreateSection(".debug_str", false, SectionKind::getMetadata());
+ getELFSection(".debug_str", false, SectionKind::getMetadata());
DwarfLocSection =
- getOrCreateSection(".debug_loc", false, SectionKind::getMetadata());
+ getELFSection(".debug_loc", false, SectionKind::getMetadata());
DwarfARangesSection =
- getOrCreateSection(".debug_aranges", false, SectionKind::getMetadata());
+ getELFSection(".debug_aranges", false, SectionKind::getMetadata());
DwarfRangesSection =
- getOrCreateSection(".debug_ranges", false, SectionKind::getMetadata());
+ getELFSection(".debug_ranges", false, SectionKind::getMetadata());
DwarfMacroInfoSection =
- getOrCreateSection(".debug_macinfo", false, SectionKind::getMetadata());
+ getELFSection(".debug_macinfo", false, SectionKind::getMetadata());
}
-SectionKind TargetLoweringObjectFileELF::
-getKindForNamedSection(const char *Name, SectionKind K) const {
+static SectionKind
+getELFKindForNamedSection(const char *Name, SectionKind K) {
if (Name[0] != '.') return K;
// Some lame default implementation based on some magic section names.
return K;
}
-void TargetLoweringObjectFileELF::
-getSectionFlagsAsString(SectionKind Kind, SmallVectorImpl<char> &Str) const {
- Str.push_back(',');
- Str.push_back('"');
-
- if (!Kind.isMetadata())
- Str.push_back('a');
- if (Kind.isText())
- Str.push_back('x');
- if (Kind.isWriteable())
- Str.push_back('w');
- if (Kind.isMergeable1ByteCString() ||
- Kind.isMergeable2ByteCString() ||
- Kind.isMergeable4ByteCString() ||
- Kind.isMergeableConst4() ||
- Kind.isMergeableConst8() ||
- Kind.isMergeableConst16())
- Str.push_back('M');
- if (Kind.isMergeable1ByteCString() ||
- Kind.isMergeable2ByteCString() ||
- Kind.isMergeable4ByteCString())
- Str.push_back('S');
- if (Kind.isThreadLocal())
- Str.push_back('T');
-
- Str.push_back('"');
- Str.push_back(',');
-
- // If comment string is '@', e.g. as on ARM - use '%' instead
- if (AtIsCommentChar)
- Str.push_back('%');
- else
- Str.push_back('@');
+const MCSection *TargetLoweringObjectFileELF::
+getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
+ Mangler *Mang, const TargetMachine &TM) const {
+ // Infer section flags from the section name if we can.
+ Kind = getELFKindForNamedSection(GV->getSection().c_str(), Kind);
- const char *KindStr;
- if (Kind.isBSS() || Kind.isThreadBSS())
- KindStr = "nobits";
- else
- KindStr = "progbits";
-
- Str.append(KindStr, KindStr+strlen(KindStr));
-
- 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');
- } else if (Kind.isMergeableConst8()) {
- Str.push_back(',');
- Str.push_back('8');
- } else if (Kind.isMergeableConst16()) {
- Str.push_back(',');
- Str.push_back('1');
- Str.push_back('6');
- }
+ return getELFSection(GV->getSection().c_str(), false, Kind);
}
-
static const char *getSectionPrefixForUniqueGlobal(SectionKind Kind) {
if (Kind.isText()) return ".gnu.linkonce.t.";
if (Kind.isReadOnly()) return ".gnu.linkonce.r.";
if (GV->isWeakForLinker()) {
const char *Prefix = getSectionPrefixForUniqueGlobal(Kind);
std::string Name = Mang->makeNameProper(GV->getNameStr());
- return getOrCreateSection((Prefix+Name).c_str(), false, Kind);
+ return getELFSection((Prefix+Name).c_str(), false, Kind);
}
if (Kind.isText()) return TextSection;
std::string Name = SizeSpec + utostr(Align);
- return getOrCreateSection(Name.c_str(), false, Kind);
+ return getELFSection(Name.c_str(), false, Kind);
}
if (Kind.isMergeableConst()) {
// MachO
//===----------------------------------------------------------------------===//
+
const MCSection *TargetLoweringObjectFileMachO::
-getMachOSection(const char *Name, bool isDirective, SectionKind K) {
- // FOR NOW, Just forward.
- return getOrCreateSection(Name, isDirective, K);
+getMachOSection(StringRef Segment, StringRef Section,
+ unsigned TypeAndAttributes,
+ unsigned Reserved2, SectionKind Kind) const {
+ // FIXME: UNIQUE HERE.
+ //if (MCSection *S = getContext().GetSection(Name))
+ // return S;
+
+ return MCSectionMachO::Create(Segment, Section, TypeAndAttributes, Reserved2,
+ Kind, getContext());
}
-
void TargetLoweringObjectFileMachO::Initialize(MCContext &Ctx,
const TargetMachine &TM) {
TargetLoweringObjectFile::Initialize(Ctx, TM);
- TextSection = getOrCreateSection("\t.text", true,
- SectionKind::getText());
- DataSection = getOrCreateSection("\t.data", true,
- SectionKind::getDataRel());
-
- CStringSection = getOrCreateSection("\t.cstring", true,
- SectionKind::getMergeable1ByteCString());
- FourByteConstantSection = getOrCreateSection("\t.literal4\n", true,
- SectionKind::getMergeableConst4());
- EightByteConstantSection = getOrCreateSection("\t.literal8\n", true,
- SectionKind::getMergeableConst8());
+
+ TextSection // .text
+ = getMachOSection("__TEXT", "__text",
+ MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
+ SectionKind::getText());
+ DataSection // .data
+ = getMachOSection("__DATA", "__data", 0, SectionKind::getDataRel());
+
+ CStringSection // .cstring
+ = getMachOSection("__TEXT", "__cstring", MCSectionMachO::S_CSTRING_LITERALS,
+ SectionKind::getMergeable1ByteCString());
+ UStringSection
+ = getMachOSection("__TEXT","__ustring", 0,
+ SectionKind::getMergeable2ByteCString());
+ FourByteConstantSection // .literal4
+ = getMachOSection("__TEXT", "__literal4", MCSectionMachO::S_4BYTE_LITERALS,
+ SectionKind::getMergeableConst4());
+ EightByteConstantSection // .literal8
+ = 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 =
- getOrCreateSection("\t.literal16\n", true,
- SectionKind::getMergeableConst16());
- else
- SixteenByteConstantSection = 0;
-
- ReadOnlySection = getOrCreateSection("\t.const", true,
- SectionKind::getReadOnly());
-
- TextCoalSection =
- getOrCreateSection("\t__TEXT,__textcoal_nt,coalesced,pure_instructions",
- false, SectionKind::getText());
- ConstTextCoalSection = getOrCreateSection("\t__TEXT,__const_coal,coalesced",
- false,
- SectionKind::getText());
- ConstDataCoalSection = getOrCreateSection("\t__DATA,__const_coal,coalesced",
- false,
- SectionKind::getText());
- ConstDataSection = getOrCreateSection("\t.const_data", true,
- SectionKind::getReadOnlyWithRel());
- DataCoalSection = getOrCreateSection("\t__DATA,__datacoal_nt,coalesced",
- false,
- SectionKind::getDataRel());
+ SixteenByteConstantSection = // .literal16
+ getMachOSection("__TEXT", "__literal16",MCSectionMachO::S_16BYTE_LITERALS,
+ SectionKind::getMergeableConst16());
+
+ ReadOnlySection // .const
+ = getMachOSection("__TEXT", "__const", 0, SectionKind::getReadOnly());
+
+ TextCoalSection
+ = getMachOSection("__TEXT", "__textcoal_nt",
+ MCSectionMachO::S_COALESCED |
+ MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
+ SectionKind::getText());
+ ConstTextCoalSection
+ = getMachOSection("__TEXT", "__const_coal", MCSectionMachO::S_COALESCED,
+ SectionKind::getText());
+ ConstDataCoalSection
+ = getMachOSection("__DATA","__const_coal", MCSectionMachO::S_COALESCED,
+ SectionKind::getText());
+ ConstDataSection // .const_data
+ = getMachOSection("__DATA", "__const", 0,
+ SectionKind::getReadOnlyWithRel());
+ DataCoalSection
+ = getMachOSection("__DATA","__datacoal_nt", MCSectionMachO::S_COALESCED,
+ SectionKind::getDataRel());
if (TM.getRelocationModel() == Reloc::Static) {
- StaticCtorSection =
- getOrCreateSection(".constructor", true, SectionKind::getDataRel());
- StaticDtorSection =
- getOrCreateSection(".destructor", true, SectionKind::getDataRel());
+ StaticCtorSection
+ = getMachOSection("__TEXT", "__constructor", 0,SectionKind::getDataRel());
+ StaticDtorSection
+ = getMachOSection("__TEXT", "__destructor", 0, SectionKind::getDataRel());
} else {
- StaticCtorSection =
- getOrCreateSection(".mod_init_func", true, SectionKind::getDataRel());
- StaticDtorSection =
- getOrCreateSection(".mod_term_func", true, SectionKind::getDataRel());
+ StaticCtorSection
+ = getMachOSection("__DATA", "__mod_init_func",
+ MCSectionMachO::S_MOD_INIT_FUNC_POINTERS,
+ SectionKind::getDataRel());
+ StaticDtorSection
+ = getMachOSection("__DATA", "__mod_term_func",
+ MCSectionMachO::S_MOD_TERM_FUNC_POINTERS,
+ SectionKind::getDataRel());
}
// Exception Handling.
- LSDASection = getOrCreateSection("__DATA,__gcc_except_tab", false,
- SectionKind::getDataRel());
+ LSDASection = getMachOSection("__DATA", "__gcc_except_tab", 0,
+ SectionKind::getDataRel());
EHFrameSection =
- getOrCreateSection("__TEXT,__eh_frame,coalesced,no_toc+strip_static_syms"
- "+live_support", false, SectionKind::getReadOnly());
+ 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.
- // 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());
+ getMachOSection("__DWARF", "__debug_abbrev", MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
DwarfInfoSection =
- getOrCreateSection(".section __DWARF,__debug_info,regular,debug", true,
- SectionKind::getMetadata());
+ getMachOSection("__DWARF", "__debug_info", MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
DwarfLineSection =
- getOrCreateSection(".section __DWARF,__debug_line,regular,debug", true,
- SectionKind::getMetadata());
+ getMachOSection("__DWARF", "__debug_line", MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
DwarfFrameSection =
- getOrCreateSection(".section __DWARF,__debug_frame,regular,debug", true,
- SectionKind::getMetadata());
+ getMachOSection("__DWARF", "__debug_frame", MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
DwarfPubNamesSection =
- getOrCreateSection(".section __DWARF,__debug_pubnames,regular,debug", true,
- SectionKind::getMetadata());
+ getMachOSection("__DWARF", "__debug_pubnames", MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
DwarfPubTypesSection =
- getOrCreateSection(".section __DWARF,__debug_pubtypes,regular,debug", true,
- SectionKind::getMetadata());
+ getMachOSection("__DWARF", "__debug_pubtypes", MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
DwarfStrSection =
- getOrCreateSection(".section __DWARF,__debug_str,regular,debug", true,
- SectionKind::getMetadata());
+ getMachOSection("__DWARF", "__debug_str", MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
DwarfLocSection =
- getOrCreateSection(".section __DWARF,__debug_loc,regular,debug", true,
- SectionKind::getMetadata());
+ getMachOSection("__DWARF", "__debug_loc", MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
DwarfARangesSection =
- getOrCreateSection(".section __DWARF,__debug_aranges,regular,debug", true,
- SectionKind::getMetadata());
+ getMachOSection("__DWARF", "__debug_aranges", MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
DwarfRangesSection =
- getOrCreateSection(".section __DWARF,__debug_ranges,regular,debug", true,
- SectionKind::getMetadata());
+ getMachOSection("__DWARF", "__debug_ranges", MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
DwarfMacroInfoSection =
- getOrCreateSection(".section __DWARF,__debug_macinfo,regular,debug", true,
- SectionKind::getMetadata());
+ getMachOSection("__DWARF", "__debug_macinfo", MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
DwarfDebugInlineSection =
- getOrCreateSection(".section __DWARF,__debug_inlined,regular,debug", true,
- SectionKind::getMetadata());
+ getMachOSection("__DWARF", "__debug_inlined", MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
+}
+
+/// getLazySymbolPointerSection - Return the section corresponding to
+/// the .lazy_symbol_pointer directive.
+const MCSection *TargetLoweringObjectFileMachO::
+getLazySymbolPointerSection() const {
+ return getMachOSection("__DATA", "__la_symbol_ptr",
+ MCSectionMachO::S_LAZY_SYMBOL_POINTERS,
+ SectionKind::getMetadata());
+}
+
+/// getNonLazySymbolPointerSection - Return the section corresponding to
+/// the .non_lazy_symbol_pointer directive.
+const MCSection *TargetLoweringObjectFileMachO::
+getNonLazySymbolPointerSection() const {
+ return getMachOSection("__DATA", "__nl_symbol_ptr",
+ MCSectionMachO::S_NON_LAZY_SYMBOL_POINTERS,
+ SectionKind::getMetadata());
+}
+
+
+const 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, StubSize;
+ std::string ErrorCode =
+ MCSectionMachO::ParseSectionSpecifier(GV->getSection(), Segment, Section,
+ TAA, StubSize);
+ if (ErrorCode.empty())
+ return getMachOSection(Segment, Section, TAA, StubSize, Kind);
+
+
+ // If invalid, report the error with llvm_report_error.
+ llvm_report_error("Global variable '" + GV->getNameStr() +
+ "' has an invalid section specifier '" + GV->getSection() +
+ "': " + ErrorCode + ".");
+ // Fall back to dropping it into the data section.
+ return DataSection;
}
const MCSection *TargetLoweringObjectFileMachO::
}
// FIXME: Alignment check should be handled by section classifier.
- if (Kind.isMergeable1ByteCString()) {
- 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)
+ 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;
// COFF
//===----------------------------------------------------------------------===//
+
const MCSection *TargetLoweringObjectFileCOFF::
-getCOFFSection(const char *Name, bool isDirective, SectionKind K) {
- return getOrCreateSection(Name, isDirective, K);
+getCOFFSection(const char *Name, bool isDirective, SectionKind Kind) const {
+ if (MCSection *S = getContext().GetSection(Name))
+ return S;
+ return MCSectionCOFF::Create(Name, isDirective, Kind, getContext());
}
void TargetLoweringObjectFileCOFF::Initialize(MCContext &Ctx,
const TargetMachine &TM) {
TargetLoweringObjectFile::Initialize(Ctx, TM);
- TextSection = getOrCreateSection("\t.text", true,
- SectionKind::getText());
- DataSection = getOrCreateSection("\t.data", true,
- SectionKind::getDataRel());
+ TextSection = getCOFFSection("\t.text", true, SectionKind::getText());
+ DataSection = getCOFFSection("\t.data", true, SectionKind::getDataRel());
StaticCtorSection =
- getOrCreateSection(".ctors", false, SectionKind::getDataRel());
+ getCOFFSection(".ctors", false, SectionKind::getDataRel());
StaticDtorSection =
- getOrCreateSection(".dtors", false, SectionKind::getDataRel());
+ getCOFFSection(".dtors", false, SectionKind::getDataRel());
// Debug info.
// FIXME: Don't use 'directive' mode here.
DwarfAbbrevSection =
- getOrCreateSection("\t.section\t.debug_abbrev,\"dr\"",
- true, SectionKind::getMetadata());
+ getCOFFSection("\t.section\t.debug_abbrev,\"dr\"",
+ true, SectionKind::getMetadata());
DwarfInfoSection =
- getOrCreateSection("\t.section\t.debug_info,\"dr\"",
- true, SectionKind::getMetadata());
+ getCOFFSection("\t.section\t.debug_info,\"dr\"",
+ true, SectionKind::getMetadata());
DwarfLineSection =
- getOrCreateSection("\t.section\t.debug_line,\"dr\"",
- true, SectionKind::getMetadata());
+ getCOFFSection("\t.section\t.debug_line,\"dr\"",
+ true, SectionKind::getMetadata());
DwarfFrameSection =
- getOrCreateSection("\t.section\t.debug_frame,\"dr\"",
- true, SectionKind::getMetadata());
+ getCOFFSection("\t.section\t.debug_frame,\"dr\"",
+ true, SectionKind::getMetadata());
DwarfPubNamesSection =
- getOrCreateSection("\t.section\t.debug_pubnames,\"dr\"",
- true, SectionKind::getMetadata());
+ getCOFFSection("\t.section\t.debug_pubnames,\"dr\"",
+ true, SectionKind::getMetadata());
DwarfPubTypesSection =
- getOrCreateSection("\t.section\t.debug_pubtypes,\"dr\"",
- true, SectionKind::getMetadata());
+ getCOFFSection("\t.section\t.debug_pubtypes,\"dr\"",
+ true, SectionKind::getMetadata());
DwarfStrSection =
- getOrCreateSection("\t.section\t.debug_str,\"dr\"",
- true, SectionKind::getMetadata());
+ getCOFFSection("\t.section\t.debug_str,\"dr\"",
+ true, SectionKind::getMetadata());
DwarfLocSection =
- getOrCreateSection("\t.section\t.debug_loc,\"dr\"",
- true, SectionKind::getMetadata());
+ getCOFFSection("\t.section\t.debug_loc,\"dr\"",
+ true, SectionKind::getMetadata());
DwarfARangesSection =
- getOrCreateSection("\t.section\t.debug_aranges,\"dr\"",
- true, SectionKind::getMetadata());
+ getCOFFSection("\t.section\t.debug_aranges,\"dr\"",
+ true, SectionKind::getMetadata());
DwarfRangesSection =
- getOrCreateSection("\t.section\t.debug_ranges,\"dr\"",
- true, SectionKind::getMetadata());
+ getCOFFSection("\t.section\t.debug_ranges,\"dr\"",
+ true, SectionKind::getMetadata());
DwarfMacroInfoSection =
- getOrCreateSection("\t.section\t.debug_macinfo,\"dr\"",
- true, SectionKind::getMetadata());
+ getCOFFSection("\t.section\t.debug_macinfo,\"dr\"",
+ true, SectionKind::getMetadata());
}
-void TargetLoweringObjectFileCOFF::
-getSectionFlagsAsString(SectionKind Kind, SmallVectorImpl<char> &Str) const {
- // FIXME: Inefficient.
- std::string Res = ",\"";
- if (Kind.isText())
- Res += 'x';
- if (Kind.isWriteable())
- Res += 'w';
- Res += "\"";
-
- Str.append(Res.begin(), Res.end());
+const MCSection *TargetLoweringObjectFileCOFF::
+getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
+ Mangler *Mang, const TargetMachine &TM) const {
+ return getCOFFSection(GV->getSection().c_str(), false, Kind);
}
static const char *getCOFFSectionPrefixForUniqueGlobal(SectionKind Kind) {
if (GV->isWeakForLinker()) {
const char *Prefix = getCOFFSectionPrefixForUniqueGlobal(Kind);
std::string Name = Mang->makeNameProper(GV->getNameStr());
- return getOrCreateSection((Prefix+Name).c_str(), false, Kind);
+ return getCOFFSection((Prefix+Name).c_str(), false, Kind);
}
if (Kind.isText())
projects / oota-llvm.git / blobdiff