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-rw-r--r--lld/ELF/InputSection.cpp10
-rw-r--r--lld/ELF/InputSection.h7
-rw-r--r--lld/ELF/LinkerScript.cpp54
-rw-r--r--lld/ELF/LinkerScript.h28
-rw-r--r--lld/ELF/MapFile.cpp21
-rw-r--r--lld/ELF/MapFile.h2
-rw-r--r--lld/ELF/OutputSections.cpp99
-rw-r--r--lld/ELF/OutputSections.h92
-rw-r--r--lld/ELF/Relocations.cpp29
-rw-r--r--lld/ELF/Relocations.h4
-rw-r--r--lld/ELF/SymbolTable.cpp2
-rw-r--r--lld/ELF/SymbolTable.h5
-rw-r--r--lld/ELF/Symbols.cpp4
-rw-r--r--lld/ELF/Symbols.h8
-rw-r--r--lld/ELF/SyntheticSections.cpp16
-rw-r--r--lld/ELF/SyntheticSections.h10
-rw-r--r--lld/ELF/Target.cpp2
-rw-r--r--lld/ELF/Thunks.h1
-rw-r--r--lld/ELF/Writer.cpp180
-rw-r--r--lld/ELF/Writer.h14
20 files changed, 271 insertions, 317 deletions
diff --git a/lld/ELF/InputSection.cpp b/lld/ELF/InputSection.cpp
index 6e9a7d78401..b80c206ed8b 100644
--- a/lld/ELF/InputSection.cpp
+++ b/lld/ELF/InputSection.cpp
@@ -118,7 +118,7 @@ uint64_t InputSectionBase::getOffset(uint64_t Offset) const {
}
template <class ELFT>
-OutputSectionBase *InputSectionBase::getOutputSection() const {
+OutputSection *InputSectionBase::getOutputSection() const {
if (auto *MS = dyn_cast<MergeInputSection<ELFT>>(this))
return MS->MergeSec ? MS->MergeSec->OutSec : nullptr;
if (auto *EH = dyn_cast<EhInputSection<ELFT>>(this))
@@ -827,10 +827,10 @@ template InputSectionBase *InputSectionBase::getLinkOrderDep<ELF32BE>() const;
template InputSectionBase *InputSectionBase::getLinkOrderDep<ELF64LE>() const;
template InputSectionBase *InputSectionBase::getLinkOrderDep<ELF64BE>() const;
-template OutputSectionBase *InputSectionBase::getOutputSection<ELF32LE>() const;
-template OutputSectionBase *InputSectionBase::getOutputSection<ELF32BE>() const;
-template OutputSectionBase *InputSectionBase::getOutputSection<ELF64LE>() const;
-template OutputSectionBase *InputSectionBase::getOutputSection<ELF64BE>() const;
+template OutputSection *InputSectionBase::getOutputSection<ELF32LE>() const;
+template OutputSection *InputSectionBase::getOutputSection<ELF32BE>() const;
+template OutputSection *InputSectionBase::getOutputSection<ELF64LE>() const;
+template OutputSection *InputSectionBase::getOutputSection<ELF64BE>() const;
template InputSectionBase *InputSection::getRelocatedSection<ELF32LE>();
template InputSectionBase *InputSection::getRelocatedSection<ELF32BE>();
diff --git a/lld/ELF/InputSection.h b/lld/ELF/InputSection.h
index 6cb895bb5a4..39f799a3761 100644
--- a/lld/ELF/InputSection.h
+++ b/lld/ELF/InputSection.h
@@ -31,8 +31,7 @@ template <class ELFT> class DefinedRegular;
template <class ELFT> class EhFrameSection;
template <class ELFT> class MergeSyntheticSection;
template <class ELFT> class ObjectFile;
-template <class ELFT> class OutputSection;
-class OutputSectionBase;
+class OutputSection;
// This corresponds to a section of an input file.
class InputSectionBase {
@@ -78,7 +77,7 @@ public:
uint64_t Entsize, uint32_t Link, uint32_t Info,
uint64_t Addralign, ArrayRef<uint8_t> Data, StringRef Name,
Kind SectionKind);
- OutputSectionBase *OutSec = nullptr;
+ OutputSection *OutSec = nullptr;
// Relocations that refer to this section.
const void *FirstRelocation = nullptr;
@@ -110,7 +109,7 @@ public:
// Returns the size of this section (even if this is a common or BSS.)
template <class ELFT> size_t getSize() const;
- template <class ELFT> OutputSectionBase *getOutputSection() const;
+ template <class ELFT> OutputSection *getOutputSection() const;
template <class ELFT> ObjectFile<ELFT> *getFile() const;
diff --git a/lld/ELF/LinkerScript.cpp b/lld/ELF/LinkerScript.cpp
index 5e3f0cd0de7..5e06050859f 100644
--- a/lld/ELF/LinkerScript.cpp
+++ b/lld/ELF/LinkerScript.cpp
@@ -72,7 +72,7 @@ template <class ELFT> static SymbolBody *addRegular(SymbolAssignment *Cmd) {
template <class ELFT> static SymbolBody *addSynthetic(SymbolAssignment *Cmd) {
Symbol *Sym;
uint8_t Visibility = Cmd->Hidden ? STV_HIDDEN : STV_DEFAULT;
- const OutputSectionBase *Sec =
+ const OutputSection *Sec =
ScriptConfig->HasSections ? nullptr : Cmd->Expression.Section();
std::tie(Sym, std::ignore) = Symtab<ELFT>::X->insert(
Cmd->Name, /*Type*/ 0, Visibility, /*CanOmitFromDynSym*/ false,
@@ -397,7 +397,7 @@ void LinkerScript<ELFT>::addOrphanSections(
Factory.addInputSec(S, getOutputSectionName(S->Name));
}
-template <class ELFT> static bool isTbss(OutputSectionBase *Sec) {
+template <class ELFT> static bool isTbss(OutputSection *Sec) {
return (Sec->Flags & SHF_TLS) && Sec->Type == SHT_NOBITS;
}
@@ -438,16 +438,11 @@ template <class ELFT> void LinkerScript<ELFT>::output(InputSection *S) {
template <class ELFT> void LinkerScript<ELFT>::flush() {
if (!CurOutSec || !AlreadyOutputOS.insert(CurOutSec).second)
return;
- if (auto *OutSec = dyn_cast<OutputSection<ELFT>>(CurOutSec)) {
- for (InputSection *I : OutSec->Sections)
- output(I);
- } else {
- Dot += CurOutSec->Size;
- }
+ for (InputSection *I : CurOutSec->Sections)
+ output(I);
}
-template <class ELFT>
-void LinkerScript<ELFT>::switchTo(OutputSectionBase *Sec) {
+template <class ELFT> void LinkerScript<ELFT>::switchTo(OutputSection *Sec) {
if (CurOutSec == Sec)
return;
if (AlreadyOutputOS.count(Sec))
@@ -512,12 +507,12 @@ template <class ELFT> void LinkerScript<ELFT>::process(BaseCommand &Base) {
}
template <class ELFT>
-static OutputSectionBase *
-findSection(StringRef Name, const std::vector<OutputSectionBase *> &Sections) {
+static OutputSection *
+findSection(StringRef Name, const std::vector<OutputSection *> &Sections) {
auto End = Sections.end();
- auto HasName = [=](OutputSectionBase *Sec) { return Sec->Name == Name; };
+ auto HasName = [=](OutputSection *Sec) { return Sec->Name == Name; };
auto I = std::find_if(Sections.begin(), End, HasName);
- std::vector<OutputSectionBase *> Ret;
+ std::vector<OutputSection *> Ret;
if (I == End)
return nullptr;
assert(std::find_if(I + 1, End, HasName) == End);
@@ -529,7 +524,7 @@ findSection(StringRef Name, const std::vector<OutputSectionBase *> &Sections) {
// returned. Otherwise, a nullptr is returned.
template <class ELFT>
MemoryRegion *LinkerScript<ELFT>::findMemoryRegion(OutputSectionCommand *Cmd,
- OutputSectionBase *Sec) {
+ OutputSection *Sec) {
// If a memory region name was specified in the output section command,
// then try to find that region first.
if (!Cmd->MemoryRegionName.empty()) {
@@ -568,7 +563,7 @@ void LinkerScript<ELFT>::assignOffsets(OutputSectionCommand *Cmd) {
uintX_t D = Dot;
LMAOffset = [=] { return Cmd->LMAExpr(D) - D; };
}
- OutputSectionBase *Sec = findSection<ELFT>(Cmd->Name, *OutputSections);
+ OutputSection *Sec = findSection<ELFT>(Cmd->Name, *OutputSections);
if (!Sec)
return;
@@ -634,8 +629,7 @@ template <class ELFT> void LinkerScript<ELFT>::adjustSectionsBeforeSorting() {
auto *Cmd = dyn_cast<OutputSectionCommand>(Base.get());
if (!Cmd)
continue;
- if (OutputSectionBase *Sec =
- findSection<ELFT>(Cmd->Name, *OutputSections)) {
+ if (OutputSection *Sec = findSection<ELFT>(Cmd->Name, *OutputSections)) {
Flags = Sec->Flags;
Type = Sec->Type;
continue;
@@ -644,7 +638,7 @@ template <class ELFT> void LinkerScript<ELFT>::adjustSectionsBeforeSorting() {
if (isAllSectionDescription(*Cmd))
continue;
- auto *OutSec = make<OutputSection<ELFT>>(Cmd->Name, Type, Flags);
+ auto *OutSec = make<OutputSection>(Cmd->Name, Type, Flags);
OutputSections->push_back(OutSec);
}
}
@@ -751,7 +745,7 @@ template <class ELFT> void LinkerScript<ELFT>::placeOrphanSections() {
++CmdIndex;
}
- for (OutputSectionBase *Sec : *OutputSections) {
+ for (OutputSection *Sec : *OutputSections) {
StringRef Name = Sec->Name;
// Find the last spot where we can insert a command and still get the
@@ -794,7 +788,7 @@ void LinkerScript<ELFT>::assignAddresses(std::vector<PhdrEntry> &Phdrs) {
// To handle that, create a dummy aether section that fills the void before
// the linker scripts switches to another section. It has an index of one
// which will map to whatever the first actual section is.
- auto *Aether = make<OutputSectionBase>("", 0, SHF_ALLOC);
+ auto *Aether = make<OutputSection>("", 0, SHF_ALLOC);
Aether->SectionIndex = 1;
switchTo(Aether);
@@ -814,7 +808,7 @@ void LinkerScript<ELFT>::assignAddresses(std::vector<PhdrEntry> &Phdrs) {
}
uintX_t MinVA = std::numeric_limits<uintX_t>::max();
- for (OutputSectionBase *Sec : *OutputSections) {
+ for (OutputSection *Sec : *OutputSections) {
if (Sec->Flags & SHF_ALLOC)
MinVA = std::min<uint64_t>(MinVA, Sec->Addr);
else
@@ -846,7 +840,7 @@ template <class ELFT> std::vector<PhdrEntry> LinkerScript<ELFT>::createPhdrs() {
}
// Add output sections to program headers.
- for (OutputSectionBase *Sec : *OutputSections) {
+ for (OutputSection *Sec : *OutputSections) {
if (!(Sec->Flags & SHF_ALLOC))
break;
@@ -936,11 +930,11 @@ template <class ELFT> bool LinkerScript<ELFT>::hasPhdrsCommands() {
}
template <class ELFT>
-const OutputSectionBase *LinkerScript<ELFT>::getOutputSection(const Twine &Loc,
- StringRef Name) {
- static OutputSectionBase FakeSec("", 0, 0);
+const OutputSection *LinkerScript<ELFT>::getOutputSection(const Twine &Loc,
+ StringRef Name) {
+ static OutputSection FakeSec("", 0, 0);
- for (OutputSectionBase *Sec : *OutputSections)
+ for (OutputSection *Sec : *OutputSections)
if (Sec->Name == Name)
return Sec;
@@ -956,7 +950,7 @@ const OutputSectionBase *LinkerScript<ELFT>::getOutputSection(const Twine &Loc,
// be empty. That is why this function is different from getOutputSection().
template <class ELFT>
uint64_t LinkerScript<ELFT>::getOutputSectionSize(StringRef Name) {
- for (OutputSectionBase *Sec : *OutputSections)
+ for (OutputSection *Sec : *OutputSections)
if (Sec->Name == Name)
return Sec->Size;
return 0;
@@ -988,7 +982,7 @@ template <class ELFT> bool LinkerScript<ELFT>::isAbsolute(StringRef S) {
// specific section but isn't absolute at the same time, so we try
// to find suitable section for it as well.
template <class ELFT>
-const OutputSectionBase *LinkerScript<ELFT>::getSymbolSection(StringRef S) {
+const OutputSection *LinkerScript<ELFT>::getSymbolSection(StringRef S) {
if (SymbolBody *Sym = Symtab<ELFT>::X->find(S))
return SymbolTableSection<ELFT>::getOutputSection(Sym);
return CurOutSec;
@@ -1646,7 +1640,7 @@ Expr ScriptParser::readExpr() {
static Expr combine(StringRef Op, Expr L, Expr R) {
auto IsAbs = [=] { return L.IsAbsolute() && R.IsAbsolute(); };
auto GetOutSec = [=] {
- const OutputSectionBase *S = L.Section();
+ const OutputSection *S = L.Section();
return S ? S : R.Section();
};
diff --git a/lld/ELF/LinkerScript.h b/lld/ELF/LinkerScript.h
index c8b967b2e37..4dbd5af919c 100644
--- a/lld/ELF/LinkerScript.h
+++ b/lld/ELF/LinkerScript.h
@@ -33,7 +33,7 @@ class ScriptParser;
class SymbolBody;
class InputSectionBase;
class InputSection;
-class OutputSectionBase;
+class OutputSection;
template <class ELFT> class OutputSectionFactory;
class InputSectionBase;
@@ -47,13 +47,13 @@ struct Expr {
// If expression is section-relative the function below is used
// to get the output section pointer.
- std::function<const OutputSectionBase *()> Section;
+ std::function<const OutputSection *()> Section;
uint64_t operator()(uint64_t Dot) const { return Val(Dot); }
operator bool() const { return (bool)Val; }
Expr(std::function<uint64_t(uint64_t)> Val, std::function<bool()> IsAbsolute,
- std::function<const OutputSectionBase *()> Section)
+ std::function<const OutputSection *()> Section)
: Val(Val), IsAbsolute(IsAbsolute), Section(Section) {}
template <typename T>
Expr(T V) : Expr(V, [] { return true; }, [] { return nullptr; }) {}
@@ -213,9 +213,9 @@ public:
virtual uint64_t getSymbolValue(const Twine &Loc, StringRef S) = 0;
virtual bool isDefined(StringRef S) = 0;
virtual bool isAbsolute(StringRef S) = 0;
- virtual const OutputSectionBase *getSymbolSection(StringRef S) = 0;
- virtual const OutputSectionBase *getOutputSection(const Twine &Loc,
- StringRef S) = 0;
+ virtual const OutputSection *getSymbolSection(StringRef S) = 0;
+ virtual const OutputSection *getOutputSection(const Twine &Loc,
+ StringRef S) = 0;
virtual uint64_t getOutputSectionSize(StringRef S) = 0;
};
@@ -268,12 +268,11 @@ public:
uint64_t getSymbolValue(const Twine &Loc, StringRef S) override;
bool isDefined(StringRef S) override;
bool isAbsolute(StringRef S) override;
- const OutputSectionBase *getSymbolSection(StringRef S) override;
- const OutputSectionBase *getOutputSection(const Twine &Loc,
- StringRef S) override;
+ const OutputSection *getSymbolSection(StringRef S) override;
+ const OutputSection *getOutputSection(const Twine &Loc, StringRef S) override;
uint64_t getOutputSectionSize(StringRef S) override;
- std::vector<OutputSectionBase *> *OutputSections;
+ std::vector<OutputSection *> *OutputSections;
int getSectionIndex(StringRef Name);
@@ -294,19 +293,18 @@ private:
std::vector<size_t> getPhdrIndices(StringRef SectionName);
size_t getPhdrIndex(const Twine &Loc, StringRef PhdrName);
- MemoryRegion *findMemoryRegion(OutputSectionCommand *Cmd,
- OutputSectionBase *Sec);
+ MemoryRegion *findMemoryRegion(OutputSectionCommand *Cmd, OutputSection *Sec);
uintX_t Dot;
std::function<uint64_t()> LMAOffset;
- OutputSectionBase *CurOutSec = nullptr;
+ OutputSection *CurOutSec = nullptr;
MemoryRegion *CurMemRegion = nullptr;
uintX_t ThreadBssOffset = 0;
- void switchTo(OutputSectionBase *Sec);
+ void switchTo(OutputSection *Sec);
void flush();
void output(InputSection *Sec);
void process(BaseCommand &Base);
- llvm::DenseSet<OutputSectionBase *> AlreadyOutputOS;
+ llvm::DenseSet<OutputSection *> AlreadyOutputOS;
llvm::DenseSet<InputSectionBase *> AlreadyOutputIS;
};
diff --git a/lld/ELF/MapFile.cpp b/lld/ELF/MapFile.cpp
index 9fb58d95cc8..576e3dc878b 100644
--- a/lld/ELF/MapFile.cpp
+++ b/lld/ELF/MapFile.cpp
@@ -95,26 +95,25 @@ static void writeInputSection(raw_fd_ostream &OS, const InputSection *IS,
template <class ELFT>
static void writeMapFile2(raw_fd_ostream &OS,
- ArrayRef<OutputSectionBase *> OutputSections) {
+ ArrayRef<OutputSection *> OutputSections) {
int Width = ELFT::Is64Bits ? 16 : 8;
OS << left_justify("Address", Width) << ' ' << left_justify("Size", Width)
<< " Align Out In File Symbol\n";
- for (OutputSectionBase *Sec : OutputSections) {
+ for (OutputSection *Sec : OutputSections) {
writeOutSecLine(OS, Width, Sec->Addr, Sec->Size, Sec->Addralign, Sec->Name);
OS << '\n';
StringRef PrevName = "";
- Sec->forEachInputSection([&](InputSectionBase *S) {
- if (const auto *IS = dyn_cast<InputSection>(S))
- writeInputSection<ELFT>(OS, IS, PrevName);
- });
+ for (InputSection *IS : Sec->Sections) {
+ writeInputSection<ELFT>(OS, IS, PrevName);
+ }
}
}
template <class ELFT>
-void elf::writeMapFile(ArrayRef<OutputSectionBase *> OutputSections) {
+void elf::writeMapFile(ArrayRef<OutputSection *> OutputSections) {
if (Config->MapFile.empty())
return;
@@ -126,7 +125,7 @@ void elf::writeMapFile(ArrayRef<OutputSectionBase *> OutputSections) {
writeMapFile2<ELFT>(OS, OutputSections);
}
-template void elf::writeMapFile<ELF32LE>(ArrayRef<OutputSectionBase *>);
-template void elf::writeMapFile<ELF32BE>(ArrayRef<OutputSectionBase *>);
-template void elf::writeMapFile<ELF64LE>(ArrayRef<OutputSectionBase *>);
-template void elf::writeMapFile<ELF64BE>(ArrayRef<OutputSectionBase *>);
+template void elf::writeMapFile<ELF32LE>(ArrayRef<OutputSection *>);
+template void elf::writeMapFile<ELF32BE>(ArrayRef<OutputSection *>);
+template void elf::writeMapFile<ELF64LE>(ArrayRef<OutputSection *>);
+template void elf::writeMapFile<ELF64BE>(ArrayRef<OutputSection *>);
diff --git a/lld/ELF/MapFile.h b/lld/ELF/MapFile.h
index e8a6ea592f6..24d636890e5 100644
--- a/lld/ELF/MapFile.h
+++ b/lld/ELF/MapFile.h
@@ -15,7 +15,7 @@
namespace lld {
namespace elf {
template <class ELFT>
-void writeMapFile(llvm::ArrayRef<OutputSectionBase *> OutputSections);
+void writeMapFile(llvm::ArrayRef<OutputSection *> OutputSections);
}
}
diff --git a/lld/ELF/OutputSections.cpp b/lld/ELF/OutputSections.cpp
index 7ce9361bff8..1832fc88d8d 100644
--- a/lld/ELF/OutputSections.cpp
+++ b/lld/ELF/OutputSections.cpp
@@ -30,15 +30,7 @@ using namespace llvm::ELF;
using namespace lld;
using namespace lld::elf;
-OutputSectionBase::OutputSectionBase(StringRef Name, uint32_t Type,
- uint64_t Flags)
- : Name(Name) {
- this->Type = Type;
- this->Flags = Flags;
- this->Addralign = 1;
-}
-
-uint32_t OutputSectionBase::getPhdrFlags() const {
+uint32_t OutputSection::getPhdrFlags() const {
uint32_t Ret = PF_R;
if (Flags & SHF_WRITE)
Ret |= PF_W;
@@ -48,7 +40,7 @@ uint32_t OutputSectionBase::getPhdrFlags() const {
}
template <class ELFT>
-void OutputSectionBase::writeHeaderTo(typename ELFT::Shdr *Shdr) {
+void OutputSection::writeHeaderTo(typename ELFT::Shdr *Shdr) {
Shdr->sh_entsize = Entsize;
Shdr->sh_addralign = Addralign;
Shdr->sh_type = Type;
@@ -78,10 +70,24 @@ template <class ELFT> static uint64_t getEntsize(uint32_t Type) {
}
}
-template <class ELFT>
-OutputSection<ELFT>::OutputSection(StringRef Name, uint32_t Type, uintX_t Flags)
- : OutputSectionBase(Name, Type, Flags) {
- this->Entsize = getEntsize<ELFT>(Type);
+OutputSection::OutputSection(StringRef Name, uint32_t Type, uint64_t Flags)
+ : Name(Name), Addralign(1), Flags(Flags), Type(Type) {
+ switch (Config->EKind) {
+ case ELFNoneKind:
+ llvm_unreachable("unknown kind");
+ case ELF32LEKind:
+ this->Entsize = getEntsize<ELF32LE>(Type);
+ break;
+ case ELF32BEKind:
+ this->Entsize = getEntsize<ELF32BE>(Type);
+ break;
+ case ELF64LEKind:
+ this->Entsize = getEntsize<ELF64LE>(Type);
+ break;
+ case ELF64BEKind:
+ this->Entsize = getEntsize<ELF64BE>(Type);
+ break;
+ }
}
template <typename ELFT>
@@ -92,18 +98,18 @@ static bool compareByFilePosition(InputSection *A, InputSection *B) {
return false;
auto *LA = cast<InputSection>(A->template getLinkOrderDep<ELFT>());
auto *LB = cast<InputSection>(B->template getLinkOrderDep<ELFT>());
- OutputSectionBase *AOut = LA->OutSec;
- OutputSectionBase *BOut = LB->OutSec;
+ OutputSection *AOut = LA->OutSec;
+ OutputSection *BOut = LB->OutSec;
if (AOut != BOut)
return AOut->SectionIndex < BOut->SectionIndex;
return LA->OutSecOff < LB->OutSecOff;
}
-template <class ELFT> void OutputSection<ELFT>::finalize() {
+template <class ELFT> void OutputSection::finalize() {
if ((this->Flags & SHF_LINK_ORDER) && !this->Sections.empty()) {
std::sort(Sections.begin(), Sections.end(), compareByFilePosition<ELFT>);
Size = 0;
- assignOffsets();
+ assignOffsets<ELFT>();
// We must preserve the link order dependency of sections with the
// SHF_LINK_ORDER flag. The dependency is indicated by the sh_link field. We
@@ -128,8 +134,7 @@ template <class ELFT> void OutputSection<ELFT>::finalize() {
this->Info = S->OutSec->SectionIndex;
}
-template <class ELFT>
-void OutputSection<ELFT>::addSection(InputSectionBase *C) {
+void OutputSection::addSection(InputSectionBase *C) {
assert(C->Live);
auto *S = cast<InputSection>(C);
Sections.push_back(S);
@@ -141,17 +146,10 @@ void OutputSection<ELFT>::addSection(InputSectionBase *C) {
this->Entsize = S->Entsize;
}
-template <class ELFT>
-void OutputSection<ELFT>::forEachInputSection(
- std::function<void(InputSectionBase *)> F) {
- for (InputSection *S : Sections)
- F(S);
-}
-
// This function is called after we sort input sections
// and scan relocations to setup sections' offsets.
-template <class ELFT> void OutputSection<ELFT>::assignOffsets() {
- uintX_t Off = this->Size;
+template <class ELFT> void OutputSection::assignOffsets() {
+ uint64_t Off = this->Size;
for (InputSection *S : Sections) {
Off = alignTo(Off, S->Alignment);
S->OutSecOff = Off;
@@ -160,8 +158,7 @@ template <class ELFT> void OutputSection<ELFT>::assignOffsets() {
this->Size = Off;
}
-template <class ELFT>
-void OutputSection<ELFT>::sort(std::function<int(InputSectionBase *S)> Order) {
+void OutputSection::sort(std::function<int(InputSectionBase *S)> Order) {
typedef std::pair<unsigned, InputSection *> Pair;
auto Comp = [](const Pair &A, const Pair &B) { return A.first < B.first; };
@@ -180,7 +177,7 @@ void OutputSection<ELFT>::sort(std::function<int(InputSectionBase *S)> Order) {
// because the compiler keeps the original initialization order in a
// translation unit and we need to respect that.
// For more detail, read the section of the GCC's manual about init_priority.
-template <class ELFT> void OutputSection<ELFT>::sortInitFini() {
+void OutputSection::sortInitFini() {
// Sort sections by priority.
sort([](InputSectionBase *S) { return getPriority(S->Name); });
}
@@ -239,7 +236,7 @@ static bool compCtors(const InputSection *A, const InputSection *B) {
// Sorts input sections by the special rules for .ctors and .dtors.
// Unfortunately, the rules are different from the one for .{init,fini}_array.
// Read the comment above.
-template <class ELFT> void OutputSection<ELFT>::sortCtorsDtors() {
+void OutputSection::sortCtorsDtors() {
std::stable_sort(Sections.begin(), Sections.end(), compCtors);
}
@@ -254,7 +251,7 @@ void fill(uint8_t *Buf, size_t Size, uint32_t Filler) {
memcpy(Buf + I, V, Size - I);
}
-template <class ELFT> void OutputSection<ELFT>::writeTo(uint8_t *Buf) {
+template <class ELFT> void OutputSection::writeTo(uint8_t *Buf) {
Loc = Buf;
if (uint32_t Filler = Script<ELFT>::X->getFiller(this->Name))
fill(Buf, this->Size, Filler);
@@ -331,7 +328,7 @@ static SectionKey createKey(InputSectionBase *C, StringRef OutsecName) {
template <class ELFT>
OutputSectionFactory<ELFT>::OutputSectionFactory(
- std::vector<OutputSectionBase *> &OutputSections)
+ std::vector<OutputSection *> &OutputSections)
: OutputSections(OutputSections) {}
static uint64_t getIncompatibleFlags(uint64_t Flags) {
@@ -367,7 +364,7 @@ void OutputSectionFactory<ELFT>::addInputSec(InputSectionBase *IS,
SectionKey Key = createKey<ELFT>(IS, OutsecName);
uintX_t Flags = getOutFlags<ELFT>(IS);
- OutputSectionBase *&Sec = Map[Key];
+ OutputSection *&Sec = Map[Key];
if (Sec) {
if (getIncompatibleFlags(Sec->Flags) != getIncompatibleFlags(IS->Flags))
error("Section has flags incompatible with others with the same name " +
@@ -386,7 +383,7 @@ void OutputSectionFactory<ELFT>::addInputSec(InputSectionBase *IS,
In<ELFT>::EhFrame->addSection(IS);
return;
}
- Sec = make<OutputSection<ELFT>>(Key.Name, Type, Flags);
+ Sec = make<OutputSection>(Key.Name, Type, Flags);
OutputSections.push_back(Sec);
}
@@ -416,15 +413,25 @@ bool DenseMapInfo<SectionKey>::isEqual(const SectionKey &LHS,
namespace lld {
namespace elf {
-template void OutputSectionBase::writeHeaderTo<ELF32LE>(ELF32LE::Shdr *Shdr);
-template void OutputSectionBase::writeHeaderTo<ELF32BE>(ELF32BE::Shdr *Shdr);
-template void OutputSectionBase::writeHeaderTo<ELF64LE>(ELF64LE::Shdr *Shdr);
-template void OutputSectionBase::writeHeaderTo<ELF64BE>(ELF64BE::Shdr *Shdr);
-
-template class OutputSection<ELF32LE>;
-template class OutputSection<ELF32BE>;
-template class OutputSection<ELF64LE>;
-template class OutputSection<ELF64BE>;
+template void OutputSection::writeHeaderTo<ELF32LE>(ELF32LE::Shdr *Shdr);
+template void OutputSection::writeHeaderTo<ELF32BE>(ELF32BE::Shdr *Shdr);
+template void OutputSection::writeHeaderTo<ELF64LE>(ELF64LE::Shdr *Shdr);
+template void OutputSection::writeHeaderTo<ELF64BE>(ELF64BE::Shdr *Shdr);
+
+template void OutputSection::assignOffsets<ELF32LE>();
+template void OutputSection::assignOffsets<ELF32BE>();
+template void OutputSection::assignOffsets<ELF64LE>();
+template void OutputSection::assignOffsets<ELF64BE>();
+
+template void OutputSection::finalize<ELF32LE>();
+template void OutputSection::finalize<ELF32BE>();
+template void OutputSection::finalize<ELF64LE>();
+template void OutputSection::finalize<ELF64BE>();
+
+template void OutputSection::writeTo<ELF32LE>(uint8_t *Buf);
+template void OutputSection::writeTo<ELF32BE>(uint8_t *Buf);
+template void OutputSection::writeTo<ELF64LE>(uint8_t *Buf);
+template void OutputSection::writeTo<ELF64BE>(uint8_t *Buf);
template class OutputSectionFactory<ELF32LE>;
template class OutputSectionFactory<ELF32BE>;
diff --git a/lld/ELF/OutputSections.h b/lld/ELF/OutputSections.h
index d2f0c3b1175..a6a0c2ab199 100644
--- a/lld/ELF/OutputSections.h
+++ b/lld/ELF/OutputSections.h
@@ -27,34 +27,23 @@ template <class ELFT> class EhInputSection;
class InputSection;
class InputSectionBase;
template <class ELFT> class MergeInputSection;
-template <class ELFT> class OutputSection;
+class OutputSection;
template <class ELFT> class ObjectFile;
template <class ELFT> class SharedFile;
template <class ELFT> class SharedSymbol;
template <class ELFT> class DefinedRegular;
// This represents a section in an output file.
-// Different sub classes represent different types of sections. Some contain
-// input sections, others are created by the linker.
+// It is composed of multiple InputSections.
// The writer creates multiple OutputSections and assign them unique,
// non-overlapping file offsets and VAs.
-class OutputSectionBase {
+class OutputSection final {
public:
- enum Kind {
- Base,
- Regular,
- };
+ OutputSection(StringRef Name, uint32_t Type, uint64_t Flags);
- OutputSectionBase(StringRef Name, uint32_t Type, uint64_t Flags);
uint64_t getLMA() const { return Addr + LMAOffset; }
template <typename ELFT> void writeHeaderTo(typename ELFT::Shdr *SHdr);
- virtual void addSection(InputSectionBase *C) {}
- virtual Kind getKind() const { return Base; }
- static bool classof(const OutputSectionBase *B) {
- return B->getKind() == Base;
- }
-
unsigned SectionIndex;
uint32_t getPhdrFlags() const;
@@ -74,13 +63,7 @@ public:
// between their file offsets should be equal to difference between their
// virtual addresses. To compute some section offset we use the following
// formula: Off = Off_first + VA - VA_first.
- OutputSectionBase *FirstInPtLoad = nullptr;
-
- virtual void finalize() {}
- virtual void forEachInputSection(std::function<void(InputSectionBase *)> F) {}
- virtual void assignOffsets() {}
- virtual void writeTo(uint8_t *Buf) {}
- virtual ~OutputSectionBase() = default;
+ OutputSection *FirstInPtLoad = nullptr;
StringRef Name;
@@ -96,29 +79,14 @@ public:
uint32_t Type = 0;
uint32_t Info = 0;
uint32_t Link = 0;
-};
-
-template <class ELFT> class OutputSection final : public OutputSectionBase {
-public:
- typedef typename ELFT::Shdr Elf_Shdr;
- typedef typename ELFT::Sym Elf_Sym;
- typedef typename ELFT::Rel Elf_Rel;
- typedef typename ELFT::Rela Elf_Rela;
- typedef typename ELFT::uint uintX_t;
- OutputSection(StringRef Name, uint32_t Type, uintX_t Flags);
- void addSection(InputSectionBase *C) override;
+ void addSection(InputSectionBase *C);
void sort(std::function<int(InputSectionBase *S)> Order);
void sortInitFini();
void sortCtorsDtors();
- void writeTo(uint8_t *Buf) override;
- void finalize() override;
- void forEachInputSection(std::function<void(InputSectionBase *)> F) override;
- void assignOffsets() override;
- Kind getKind() const override { return Regular; }
- static bool classof(const OutputSectionBase *B) {
- return B->getKind() == Regular;
- }
+ template <class ELFT> void writeTo(uint8_t *Buf);
+ template <class ELFT> void finalize();
+ template <class ELFT> void assignOffsets();
std::vector<InputSection *> Sections;
// Location in the output buffer.
@@ -133,17 +101,17 @@ template <class ELFT> struct Out {
typedef typename ELFT::Phdr Elf_Phdr;
static uint8_t First;
- static OutputSection<ELFT> *Bss;
- static OutputSection<ELFT> *BssRelRo;
- static OutputSectionBase *Opd;
+ static OutputSection *Bss;
+ static OutputSection *BssRelRo;
+ static OutputSection *Opd;
static uint8_t *OpdBuf;
static PhdrEntry *TlsPhdr;
- static OutputSectionBase *DebugInfo;
- static OutputSectionBase *ElfHeader;
- static OutputSectionBase *ProgramHeaders;
- static OutputSectionBase *PreinitArray;
- static OutputSectionBase *InitArray;
- static OutputSectionBase *FiniArray;
+ static OutputSection *DebugInfo;
+ static OutputSection *ElfHeader;
+ static OutputSection *ProgramHeaders;
+ static OutputSection *PreinitArray;
+ static OutputSection *InitArray;
+ static OutputSection *FiniArray;
};
struct SectionKey {
@@ -174,13 +142,13 @@ template <class ELFT> class OutputSectionFactory {
typedef typename ELFT::uint uintX_t;
public:
- OutputSectionFactory(std::vector<OutputSectionBase *> &OutputSections);
+ OutputSectionFactory(std::vector<OutputSection *> &OutputSections);
~OutputSectionFactory();
void addInputSec(InputSectionBase *IS, StringRef OutsecName);
private:
- llvm::SmallDenseMap<SectionKey, OutputSectionBase *> Map;
- std::vector<OutputSectionBase *> &OutputSections;
+ llvm::SmallDenseMap<SectionKey, OutputSection *> Map;
+ std::vector<OutputSection *> &OutputSections;
};
template <class ELFT> uint64_t getHeaderSize() {
@@ -190,17 +158,17 @@ template <class ELFT> uint64_t getHeaderSize() {
}
template <class ELFT> uint8_t Out<ELFT>::First;
-template <class ELFT> OutputSection<ELFT> *Out<ELFT>::Bss;
-template <class ELFT> OutputSection<ELFT> *Out<ELFT>::BssRelRo;
-template <class ELFT> OutputSectionBase *Out<ELFT>::Opd;
+template <class ELFT> OutputSection *Out<ELFT>::Bss;
+template <class ELFT> OutputSection *Out<ELFT>::BssRelRo;
+template <class ELFT> OutputSection *Out<ELFT>::Opd;
template <class ELFT> uint8_t *Out<ELFT>::OpdBuf;
template <class ELFT> PhdrEntry *Out<ELFT>::TlsPhdr;
-template <class ELFT> OutputSectionBase *Out<ELFT>::DebugInfo;
-template <class ELFT> OutputSectionBase *Out<ELFT>::ElfHeader;
-template <class ELFT> OutputSectionBase *Out<ELFT>::ProgramHeaders;
-template <class ELFT> OutputSectionBase *Out<ELFT>::PreinitArray;
-template <class ELFT> OutputSectionBase *Out<ELFT>::InitArray;
-template <class ELFT> OutputSectionBase *Out<ELFT>::FiniArray;
+template <class ELFT> OutputSection *Out<ELFT>::DebugInfo;
+template <class ELFT> OutputSection *Out<ELFT>::ElfHeader;
+template <class ELFT> OutputSection *Out<ELFT>::ProgramHeaders;
+template <class ELFT> OutputSection *Out<ELFT>::PreinitArray;
+template <class ELFT> OutputSection *Out<ELFT>::InitArray;
+template <class ELFT> OutputSection *Out<ELFT>::FiniArray;
} // namespace elf
} // namespace lld
diff --git a/lld/ELF/Relocations.cpp b/lld/ELF/Relocations.cpp
index 74d6d96dcf8..35030888208 100644
--- a/lld/ELF/Relocations.cpp
+++ b/lld/ELF/Relocations.cpp
@@ -485,7 +485,7 @@ template <class ELFT> static void addCopyRelSymbol(SharedSymbol<ELFT> *SS) {
// See if this symbol is in a read-only segment. If so, preserve the symbol's
// memory protection by reserving space in the .bss.rel.ro section.
bool IsReadOnly = isReadOnly(SS);
- OutputSection<ELFT> *OSec = IsReadOnly ? Out<ELFT>::BssRelRo : Out<ELFT>::Bss;
+ OutputSection *OSec = IsReadOnly ? Out<ELFT>::BssRelRo : Out<ELFT>::Bss;
// Create a SyntheticSection in Out to hold the .bss and the Copy Reloc.
auto *ISec =
@@ -866,7 +866,7 @@ template <class ELFT> void scanRelocations(InputSectionBase &S) {
// offsets.
// This may invalidate any output section offsets stored outside of InputSection
template <class ELFT>
-static void mergeThunks(OutputSection<ELFT> *OS,
+static void mergeThunks(OutputSection *OS,
std::vector<ThunkSection<ELFT> *> &Thunks) {
// Order Thunks in ascending OutSecOff
auto ThunkCmp = [](const ThunkSection<ELFT> *A, const ThunkSection<ELFT> *B) {
@@ -893,7 +893,7 @@ static void mergeThunks(OutputSection<ELFT> *OS,
Thunks.end(), std::back_inserter(Tmp), MergeCmp);
OS->Sections = std::move(Tmp);
OS->Size = 0;
- OS->assignOffsets();
+ OS->assignOffsets<ELFT>();
}
// Process all relocations from the InputSections that have been assigned
@@ -907,14 +907,13 @@ static void mergeThunks(OutputSection<ELFT> *OS,
// FIXME: All Thunks are assumed to be in range of the relocation. Range
// extension Thunks are not yet supported.
template <class ELFT>
-void createThunks(ArrayRef<OutputSectionBase *> OutputSections) {
+void createThunks(ArrayRef<OutputSection *> OutputSections) {
// Track Symbols that already have a Thunk
DenseMap<SymbolBody *, Thunk<ELFT> *> ThunkedSymbols;
// Track InputSections that have a ThunkSection placed in front
DenseMap<InputSection *, ThunkSection<ELFT> *> ThunkedSections;
// Track the ThunksSections that need to be inserted into an OutputSection
- std::map<OutputSection<ELFT> *, std::vector<ThunkSection<ELFT> *>>
- ThunkSections;
+ std::map<OutputSection *, std::vector<ThunkSection<ELFT> *>> ThunkSections;
// Find or create a Thunk for Body for relocation Type
auto GetThunk = [&](SymbolBody &Body, uint32_t Type) {
@@ -925,11 +924,11 @@ void createThunks(ArrayRef<OutputSectionBase *> OutputSections) {
};
// Find or create a ThunkSection to be placed immediately before IS
- auto GetISThunkSec = [&](InputSection *IS, OutputSection<ELFT> *OS) {
+ auto GetISThunkSec = [&](InputSection *IS, OutputSection *OS) {
ThunkSection<ELFT> *TS = ThunkedSections.lookup(IS);
if (TS)
return TS;
- auto *TOS = cast<OutputSection<ELFT>>(IS->OutSec);
+ auto *TOS = cast<OutputSection>(IS->OutSec);
TS = make<ThunkSection<ELFT>>(TOS, IS->OutSecOff);
ThunkSections[OS].push_back(TS);
ThunkedSections[IS] = TS;
@@ -937,7 +936,7 @@ void createThunks(ArrayRef<OutputSectionBase *> OutputSections) {
};
// Find or create a ThunkSection to be placed as last executable section in
// OS.
- auto GetOSThunkSec = [&](ThunkSection<ELFT> *&TS, OutputSection<ELFT> *OS) {
+ auto GetOSThunkSec = [&](ThunkSection<ELFT> *&TS, OutputSection *OS) {
if (TS == nullptr) {
uint32_t Off = 0;
for (auto *IS : OS->Sections) {
@@ -956,8 +955,8 @@ void createThunks(ArrayRef<OutputSectionBase *> OutputSections) {
// We separate the creation of ThunkSections from the insertion of the
// ThunkSections back into the OutputSection as ThunkSections are not always
// inserted into the same OutputSection as the caller.
- for (OutputSectionBase *Base : OutputSections) {
- auto *OS = dyn_cast<OutputSection<ELFT>>(Base);
+ for (OutputSection *Base : OutputSections) {
+ auto *OS = dyn_cast<OutputSection>(Base);
if (OS == nullptr)
continue;
@@ -997,9 +996,9 @@ template void scanRelocations<ELF32BE>(InputSectionBase &);
template void scanRelocations<ELF64LE>(InputSectionBase &);
template void scanRelocations<ELF64BE>(InputSectionBase &);
-template void createThunks<ELF32LE>(ArrayRef<OutputSectionBase *>);
-template void createThunks<ELF32BE>(ArrayRef<OutputSectionBase *>);
-template void createThunks<ELF64LE>(ArrayRef<OutputSectionBase *>);
-template void createThunks<ELF64BE>(ArrayRef<OutputSectionBase *>);
+template void createThunks<ELF32LE>(ArrayRef<OutputSection *>);
+template void createThunks<ELF32BE>(ArrayRef<OutputSection *>);
+template void createThunks<ELF64LE>(ArrayRef<OutputSection *>);
+template void createThunks<ELF64BE>(ArrayRef<OutputSection *>);
}
}
diff --git a/lld/ELF/Relocations.h b/lld/ELF/Relocations.h
index d1420cf37ac..e45d5fa61b4 100644
--- a/lld/ELF/Relocations.h
+++ b/lld/ELF/Relocations.h
@@ -17,7 +17,7 @@ namespace elf {
class SymbolBody;
class InputSection;
class InputSectionBase;
-class OutputSectionBase;
+class OutputSection;
// List of target-independent relocation types. Relocations read
// from files are converted to these types so that the main code
@@ -112,7 +112,7 @@ struct Relocation {
template <class ELFT> void scanRelocations(InputSectionBase &);
template <class ELFT>
-void createThunks(ArrayRef<OutputSectionBase *> OutputSections);
+void createThunks(ArrayRef<OutputSection *> OutputSections);
// Return a int64_t to make sure we get the sign extension out of the way as
// early as possible.
diff --git a/lld/ELF/SymbolTable.cpp b/lld/ELF/SymbolTable.cpp
index 47dd62e8ccf..405c44a0671 100644
--- a/lld/ELF/SymbolTable.cpp
+++ b/lld/ELF/SymbolTable.cpp
@@ -397,7 +397,7 @@ SymbolTable<ELFT>::addRegular(StringRef Name, uint8_t StOther, uint8_t Type,
template <typename ELFT>
Symbol *SymbolTable<ELFT>::addSynthetic(StringRef N,
- const OutputSectionBase *Section,
+ const OutputSection *Section,
uintX_t Value, uint8_t StOther) {
Symbol *S;
bool WasInserted;
diff --git a/lld/ELF/SymbolTable.h b/lld/ELF/SymbolTable.h
index 2b8a7f982dc..c35f479a55d 100644
--- a/lld/ELF/SymbolTable.h
+++ b/lld/ELF/SymbolTable.h
@@ -19,7 +19,6 @@
namespace lld {
namespace elf {
class Lazy;
-class OutputSectionBase;
struct Symbol;
// SymbolTable is a bucket of all known symbols, including defined,
@@ -62,8 +61,8 @@ public:
uintX_t Value, uintX_t Size, uint8_t Binding,
InputSectionBase *Section, InputFile *File);
- Symbol *addSynthetic(StringRef N, const OutputSectionBase *Section,
- uintX_t Value, uint8_t StOther);
+ Symbol *addSynthetic(StringRef N, const OutputSection *Section, uintX_t Value,
+ uint8_t StOther);
void addShared(SharedFile<ELFT> *F, StringRef Name, const Elf_Sym &Sym,
const typename ELFT::Verdef *Verdef);
diff --git a/lld/ELF/Symbols.cpp b/lld/ELF/Symbols.cpp
index bbfcb2ec69c..f0572d2e3ba 100644
--- a/lld/ELF/Symbols.cpp
+++ b/lld/ELF/Symbols.cpp
@@ -35,7 +35,7 @@ static typename ELFT::uint getSymVA(const SymbolBody &Body, int64_t &Addend) {
switch (Body.kind()) {
case SymbolBody::DefinedSyntheticKind: {
auto &D = cast<DefinedSynthetic>(Body);
- const OutputSectionBase *Sec = D.Section;
+ const OutputSection *Sec = D.Section;
if (!Sec)
return D.Value;
if (D.Value == uintX_t(-1))
@@ -62,7 +62,7 @@ static typename ELFT::uint getSymVA(const SymbolBody &Body, int64_t &Addend) {
Offset += Addend;
Addend = 0;
}
- const OutputSectionBase *OutSec = IS->getOutputSection<ELFT>();
+ const OutputSection *OutSec = IS->getOutputSection<ELFT>();
uintX_t VA = (OutSec ? OutSec->Addr : 0) + IS->getOffset<ELFT>(Offset);
if (D.isTls() && !Config->Relocatable) {
if (!Out<ELFT>::TlsPhdr)
diff --git a/lld/ELF/Symbols.h b/lld/ELF/Symbols.h
index ab19aa43d17..4fc130b15c7 100644
--- a/lld/ELF/Symbols.h
+++ b/lld/ELF/Symbols.h
@@ -30,8 +30,7 @@ class BitcodeFile;
class InputFile;
class LazyObjectFile;
template <class ELFT> class ObjectFile;
-template <class ELFT> class OutputSection;
-class OutputSectionBase;
+class OutputSection;
template <class ELFT> class SharedFile;
struct Symbol;
@@ -219,8 +218,7 @@ template <class ELFT> InputSectionBase *DefinedRegular<ELFT>::NullInputSection;
// If Section is null, this symbol is relative to the image base.
class DefinedSynthetic : public Defined {
public:
- DefinedSynthetic(StringRef Name, uint64_t Value,
- const OutputSectionBase *Section)
+ DefinedSynthetic(StringRef Name, uint64_t Value, const OutputSection *Section)
: Defined(SymbolBody::DefinedSyntheticKind, Name, /*IsLocal=*/false,
llvm::ELF::STV_HIDDEN, 0 /* Type */),
Value(Value), Section(Section) {}
@@ -230,7 +228,7 @@ public:
}
uint64_t Value;
- const OutputSectionBase *Section;
+ const OutputSection *Section;
};
class Undefined : public SymbolBody {
diff --git a/lld/ELF/SyntheticSections.cpp b/lld/ELF/SyntheticSections.cpp
index d3575a1fb29..8a881f8a41e 100644
--- a/lld/ELF/SyntheticSections.cpp
+++ b/lld/ELF/SyntheticSections.cpp
@@ -769,7 +769,7 @@ template <class ELFT>
typename MipsGotSection<ELFT>::uintX_t
MipsGotSection<ELFT>::getPageEntryOffset(const SymbolBody &B,
int64_t Addend) const {
- const OutputSectionBase *OutSec =
+ const OutputSection *OutSec =
cast<DefinedRegular<ELFT>>(&B)
->Section->template getOutputSection<ELFT>();
uintX_t SecAddr = getMipsPageAddr(OutSec->Addr);
@@ -827,7 +827,7 @@ unsigned MipsGotSection<ELFT>::getLocalEntriesNum() const {
template <class ELFT> void MipsGotSection<ELFT>::finalize() {
PageEntriesNum = 0;
- for (std::pair<const OutputSectionBase *, size_t> &P : PageIndexMap) {
+ for (std::pair<const OutputSection *, size_t> &P : PageIndexMap) {
// For each output section referenced by GOT page relocations calculate
// and save into PageIndexMap an upper bound of MIPS GOT entries required
// to store page addresses of local symbols. We assume the worst case -
@@ -877,7 +877,7 @@ template <class ELFT> void MipsGotSection<ELFT>::writeTo(uint8_t *Buf) {
P[1] = uintX_t(1) << (ELFT::Is64Bits ? 63 : 31);
Buf += HeaderEntriesNum * sizeof(uintX_t);
// Write 'page address' entries to the local part of the GOT.
- for (std::pair<const OutputSectionBase *, size_t> &L : PageIndexMap) {
+ for (std::pair<const OutputSection *, size_t> &L : PageIndexMap) {
size_t PageCount = getMipsPageCount(L.first->Size);
uintX_t FirstPageAddr = getMipsPageAddr(L.first->Addr);
for (size_t PI = 0; PI < PageCount; ++PI) {
@@ -1381,7 +1381,7 @@ void SymbolTableSection<ELFT>::writeLocalSymbols(uint8_t *&Buf) {
ESym->st_shndx = SHN_ABS;
ESym->st_value = Body.Value;
} else {
- const OutputSectionBase *OutSec = Section->getOutputSection<ELFT>();
+ const OutputSection *OutSec = Section->getOutputSection<ELFT>();
ESym->st_shndx = OutSec->SectionIndex;
ESym->st_value = OutSec->Addr + Section->getOffset(Body);
}
@@ -1412,7 +1412,7 @@ void SymbolTableSection<ELFT>::writeGlobalSymbols(uint8_t *Buf) {
ESym->setVisibility(Body->symbol()->Visibility);
ESym->st_value = Body->getVA<ELFT>();
- if (const OutputSectionBase *OutSec = getOutputSection(Body)) {
+ if (const OutputSection *OutSec = getOutputSection(Body)) {
ESym->st_shndx = OutSec->SectionIndex;
} else if (isa<DefinedRegular<ELFT>>(Body)) {
ESym->st_shndx = SHN_ABS;
@@ -1439,7 +1439,7 @@ void SymbolTableSection<ELFT>::writeGlobalSymbols(uint8_t *Buf) {
}
template <class ELFT>
-const OutputSectionBase *
+const OutputSection *
SymbolTableSection<ELFT>::getOutputSection(SymbolBody *Sym) {
switch (Sym->kind()) {
case SymbolBody::DefinedSyntheticKind:
@@ -2173,7 +2173,7 @@ ARMExidxSentinelSection<ELFT>::ARMExidxSentinelSection()
template <class ELFT>
void ARMExidxSentinelSection<ELFT>::writeTo(uint8_t *Buf) {
// Get the InputSection before us, we are by definition last
- auto RI = cast<OutputSection<ELFT>>(this->OutSec)->Sections.rbegin();
+ auto RI = cast<OutputSection>(this->OutSec)->Sections.rbegin();
InputSection *LE = *(++RI);
InputSection *LC = cast<InputSection>(LE->template getLinkOrderDep<ELFT>());
uint64_t S = LC->OutSec->Addr +
@@ -2184,7 +2184,7 @@ void ARMExidxSentinelSection<ELFT>::writeTo(uint8_t *Buf) {
}
template <class ELFT>
-ThunkSection<ELFT>::ThunkSection(OutputSectionBase *OS, uint64_t Off)
+ThunkSection<ELFT>::ThunkSection(OutputSection *OS, uint64_t Off)
: SyntheticSection<ELFT>(SHF_ALLOC | SHF_EXECINSTR, SHT_PROGBITS,
sizeof(typename ELFT::uint), ".text.thunk") {
this->OutSec = OS;
diff --git a/lld/ELF/SyntheticSections.h b/lld/ELF/SyntheticSections.h
index 98b6c8beeb1..34a922da772 100644
--- a/lld/ELF/SyntheticSections.h
+++ b/lld/ELF/SyntheticSections.h
@@ -249,7 +249,7 @@ private:
uint32_t PageEntriesNum = 0;
// Map output sections referenced by MIPS GOT relocations
// to the first index of "Page" entries allocated for this section.
- llvm::SmallMapVector<const OutputSectionBase *, size_t, 16> PageIndexMap;
+ llvm::SmallMapVector<const OutputSection *, size_t, 16> PageIndexMap;
typedef std::pair<const SymbolBody *, uintX_t> GotEntry;
typedef std::vector<GotEntry> GotEntries;
@@ -364,13 +364,13 @@ class DynamicSection final : public SyntheticSection<ELFT> {
struct Entry {
int32_t Tag;
union {
- OutputSectionBase *OutSec;
+ OutputSection *OutSec;
InputSection *InSec;
uint64_t Val;
const SymbolBody *Sym;
};
enum KindT { SecAddr, SecSize, SymAddr, PlainInt, InSecAddr } Kind;
- Entry(int32_t Tag, OutputSectionBase *OutSec, KindT Kind = SecAddr)
+ Entry(int32_t Tag, OutputSection *OutSec, KindT Kind = SecAddr)
: Tag(Tag), OutSec(OutSec), Kind(Kind) {}
Entry(int32_t Tag, InputSection *Sec)
: Tag(Tag), InSec(Sec), Kind(InSecAddr) {}
@@ -443,7 +443,7 @@ public:
ArrayRef<SymbolTableEntry> getSymbols() const { return Symbols; }
- static const OutputSectionBase *getOutputSection(SymbolBody *Sym);
+ static const OutputSection *getOutputSection(SymbolBody *Sym);
private:
void writeLocalSymbols(uint8_t *&Buf);
@@ -777,7 +777,7 @@ public:
template <class ELFT> class ThunkSection : public SyntheticSection<ELFT> {
public:
// ThunkSection in OS, with desired OutSecOff of Off
- ThunkSection(OutputSectionBase *OS, uint64_t Off);
+ ThunkSection(OutputSection *OS, uint64_t Off);
// Add a newly created Thunk to this container:
// Thunk is given offset from start of this InputSection
diff --git a/lld/ELF/Target.cpp b/lld/ELF/Target.cpp
index 3cace69e7fb..046b6a23d48 100644
--- a/lld/ELF/Target.cpp
+++ b/lld/ELF/Target.cpp
@@ -65,7 +65,7 @@ template <class ELFT> static std::string getErrorLoc(uint8_t *Loc) {
if (!IS || !IS->OutSec)
continue;
- uint8_t *ISLoc = cast<OutputSection<ELFT>>(IS->OutSec)->Loc + IS->OutSecOff;
+ uint8_t *ISLoc = cast<OutputSection>(IS->OutSec)->Loc + IS->OutSecOff;
if (ISLoc <= Loc && Loc < ISLoc + IS->template getSize<ELFT>())
return IS->template getLocation<ELFT>(Loc - ISLoc) + ": ";
}
diff --git a/lld/ELF/Thunks.h b/lld/ELF/Thunks.h
index 78b4bba8638..c0c410bbb25 100644
--- a/lld/ELF/Thunks.h
+++ b/lld/ELF/Thunks.h
@@ -16,7 +16,6 @@ namespace lld {
namespace elf {
class SymbolBody;
template <class ELFT> class ThunkSection;
-class OutputSectionBase;
// Class to describe an instance of a Thunk.
// A Thunk is a code-sequence inserted by the linker in between a caller and
// the callee. The relocation to the callee is redirected to the Thunk, which
diff --git a/lld/ELF/Writer.cpp b/lld/ELF/Writer.cpp
index 1fc7e389826..397d86bc17d 100644
--- a/lld/ELF/Writer.cpp
+++ b/lld/ELF/Writer.cpp
@@ -77,14 +77,14 @@ private:
std::unique_ptr<FileOutputBuffer> Buffer;
- std::vector<OutputSectionBase *> OutputSections;
+ std::vector<OutputSection *> OutputSections;
OutputSectionFactory<ELFT> Factory{OutputSections};
void addRelIpltSymbols();
void addStartEndSymbols();
- void addStartStopSymbols(OutputSectionBase *Sec);
+ void addStartStopSymbols(OutputSection *Sec);
uintX_t getEntryAddr();
- OutputSectionBase *findSection(StringRef Name);
+ OutputSection *findSection(StringRef Name);
std::vector<PhdrEntry> Phdrs;
@@ -313,18 +313,18 @@ template <class ELFT> void Writer<ELFT>::createSyntheticSections() {
// Create singleton output sections.
Out<ELFT>::Bss =
- make<OutputSection<ELFT>>(".bss", SHT_NOBITS, SHF_ALLOC | SHF_WRITE);
- Out<ELFT>::BssRelRo = make<OutputSection<ELFT>>(".bss.rel.ro", SHT_NOBITS,
- SHF_ALLOC | SHF_WRITE);
+ make<OutputSection>(".bss", SHT_NOBITS, SHF_ALLOC | SHF_WRITE);
+ Out<ELFT>::BssRelRo =
+ make<OutputSection>(".bss.rel.ro", SHT_NOBITS, SHF_ALLOC | SHF_WRITE);
In<ELFT>::DynStrTab = make<StringTableSection<ELFT>>(".dynstr", true);
In<ELFT>::Dynamic = make<DynamicSection<ELFT>>();
In<ELFT>::RelaDyn = make<RelocationSection<ELFT>>(
Config->Rela ? ".rela.dyn" : ".rel.dyn", Config->ZCombreloc);
In<ELFT>::ShStrTab = make<StringTableSection<ELFT>>(".shstrtab", false);
- Out<ELFT>::ElfHeader = make<OutputSectionBase>("", 0, SHF_ALLOC);
+ Out<ELFT>::ElfHeader = make<OutputSection>("", 0, SHF_ALLOC);
Out<ELFT>::ElfHeader->Size = sizeof(Elf_Ehdr);
- Out<ELFT>::ProgramHeaders = make<OutputSectionBase>("", 0, SHF_ALLOC);
+ Out<ELFT>::ProgramHeaders = make<OutputSection>("", 0, SHF_ALLOC);
Out<ELFT>::ProgramHeaders->updateAlignment(sizeof(uintX_t));
if (needsInterpSection<ELFT>()) {
@@ -529,13 +529,10 @@ template <class ELFT> void Writer<ELFT>::copyLocalSymbols() {
template <class ELFT> void Writer<ELFT>::addSectionSymbols() {
// Create one STT_SECTION symbol for each output section we might
// have a relocation with.
- for (OutputSectionBase *Sec : OutputSections) {
- InputSectionBase *First = nullptr;
- Sec->forEachInputSection([&](InputSectionBase *D) {
- if (!First)
- First = D;
- });
- auto *IS = dyn_cast_or_null<InputSection>(First);
+ for (OutputSection *Sec : OutputSections) {
+ InputSection *IS = nullptr;
+ if (!Sec->Sections.empty())
+ IS = Sec->Sections[0];
if (!IS || isa<SyntheticSection<ELFT>>(IS) || IS->Type == SHT_REL ||
IS->Type == SHT_RELA)
continue;
@@ -565,7 +562,7 @@ static int getPPC64SectionRank(StringRef SectionName) {
// All sections with SHF_MIPS_GPREL flag should be grouped together
// because data in these sections is addressable with a gp relative address.
-static int getMipsSectionRank(const OutputSectionBase *S) {
+static int getMipsSectionRank(const OutputSection *S) {
if ((S->Flags & SHF_MIPS_GPREL) == 0)
return 0;
if (S->Name == ".got")
@@ -579,7 +576,7 @@ static int getMipsSectionRank(const OutputSectionBase *S) {
//
// This function returns true if a section needs to be put into a
// PT_GNU_RELRO segment.
-template <class ELFT> bool elf::isRelroSection(const OutputSectionBase *Sec) {
+template <class ELFT> bool elf::isRelroSection(const OutputSection *Sec) {
if (!Config->ZRelro)
return false;
@@ -609,8 +606,8 @@ template <class ELFT> bool elf::isRelroSection(const OutputSectionBase *Sec) {
}
template <class ELFT>
-static bool compareSectionsNonScript(const OutputSectionBase *A,
- const OutputSectionBase *B) {
+static bool compareSectionsNonScript(const OutputSection *A,
+ const OutputSection *B) {
// Put .interp first because some loaders want to see that section
// on the first page of the executable file when loaded into memory.
bool AIsInterp = A->Name == ".interp";
@@ -707,8 +704,7 @@ static bool compareSectionsNonScript(const OutputSectionBase *A,
// Output section ordering is determined by this function.
template <class ELFT>
-static bool compareSections(const OutputSectionBase *A,
- const OutputSectionBase *B) {
+static bool compareSections(const OutputSection *A, const OutputSection *B) {
// For now, put sections mentioned in a linker script first.
int AIndex = Script<ELFT>::X->getSectionIndex(A->Name);
int BIndex = Script<ELFT>::X->getSectionIndex(B->Name);
@@ -729,7 +725,7 @@ PhdrEntry::PhdrEntry(unsigned Type, unsigned Flags) {
p_flags = Flags;
}
-void PhdrEntry::add(OutputSectionBase *Sec) {
+void PhdrEntry::add(OutputSection *Sec) {
Last = Sec;
if (!First)
First = Sec;
@@ -740,7 +736,7 @@ void PhdrEntry::add(OutputSectionBase *Sec) {
template <class ELFT>
static DefinedSynthetic *
-addOptionalSynthetic(StringRef Name, OutputSectionBase *Sec,
+addOptionalSynthetic(StringRef Name, OutputSection *Sec,
typename ELFT::uint Val, uint8_t StOther = STV_HIDDEN) {
if (SymbolBody *S = Symtab<ELFT>::X->find(Name))
if (!S->isInCurrentDSO())
@@ -862,20 +858,20 @@ template <class ELFT> void Writer<ELFT>::addReservedSymbols() {
// Sort input sections by section name suffixes for
// __attribute__((init_priority(N))).
-template <class ELFT> static void sortInitFini(OutputSectionBase *S) {
+template <class ELFT> static void sortInitFini(OutputSection *S) {
if (S)
- reinterpret_cast<OutputSection<ELFT> *>(S)->sortInitFini();
+ reinterpret_cast<OutputSection *>(S)->sortInitFini();
}
// Sort input sections by the special rule for .ctors and .dtors.
-template <class ELFT> static void sortCtorsDtors(OutputSectionBase *S) {
+template <class ELFT> static void sortCtorsDtors(OutputSection *S) {
if (S)
- reinterpret_cast<OutputSection<ELFT> *>(S)->sortCtorsDtors();
+ reinterpret_cast<OutputSection *>(S)->sortCtorsDtors();
}
// Sort input sections using the list provided by --symbol-ordering-file.
template <class ELFT>
-static void sortBySymbolsOrder(ArrayRef<OutputSectionBase *> OutputSections) {
+static void sortBySymbolsOrder(ArrayRef<OutputSection *> OutputSections) {
if (Config->SymbolOrderingFile.empty())
return;
@@ -900,8 +896,8 @@ static void sortBySymbolsOrder(ArrayRef<OutputSectionBase *> OutputSections) {
}
// Sort sections by priority.
- for (OutputSectionBase *Base : OutputSections)
- if (auto *Sec = dyn_cast<OutputSection<ELFT>>(Base))
+ for (OutputSection *Base : OutputSections)
+ if (auto *Sec = dyn_cast<OutputSection>(Base))
Sec->sort([&](InputSectionBase *S) { return SectionOrder.lookup(S); });
}
@@ -933,13 +929,12 @@ template <class ELFT> void Writer<ELFT>::createSections() {
sortCtorsDtors<ELFT>(findSection(".ctors"));
sortCtorsDtors<ELFT>(findSection(".dtors"));
- for (OutputSectionBase *Sec : OutputSections)
- Sec->assignOffsets();
+ for (OutputSection *Sec : OutputSections)
+ Sec->assignOffsets<ELFT>();
}
template <class ELFT>
-static bool canSharePtLoad(const OutputSectionBase &S1,
- const OutputSectionBase &S2) {
+static bool canSharePtLoad(const OutputSection &S1, const OutputSection &S2) {
if (!(S1.Flags & SHF_ALLOC) || !(S2.Flags & SHF_ALLOC))
return false;
@@ -995,12 +990,12 @@ template <class ELFT> void Writer<ELFT>::sortSections() {
auto I = OutputSections.begin();
auto E = OutputSections.end();
auto NonScriptI =
- std::find_if(OutputSections.begin(), E, [](OutputSectionBase *S) {
+ std::find_if(OutputSections.begin(), E, [](OutputSection *S) {
return Script<ELFT>::X->getSectionIndex(S->Name) == INT_MAX;
});
while (NonScriptI != E) {
auto BestPos = std::max_element(
- I, NonScriptI, [&](OutputSectionBase *&A, OutputSectionBase *&B) {
+ I, NonScriptI, [&](OutputSection *&A, OutputSection *&B) {
bool ACanSharePtLoad = canSharePtLoad<ELFT>(**NonScriptI, *A);
bool BCanSharePtLoad = canSharePtLoad<ELFT>(**NonScriptI, *B);
if (ACanSharePtLoad != BCanSharePtLoad)
@@ -1036,7 +1031,7 @@ finalizeSynthetic(const std::vector<SyntheticSection<ELFT> *> &Sections) {
if (SS && SS->OutSec && !SS->empty()) {
SS->finalize();
SS->OutSec->Size = 0;
- SS->OutSec->assignOffsets();
+ SS->OutSec->template assignOffsets<ELFT>();
}
}
@@ -1045,7 +1040,7 @@ finalizeSynthetic(const std::vector<SyntheticSection<ELFT> *> &Sections) {
// required to be in output. For example we don't need dynamic section content
// sometimes. This function filters out such unused sections from output.
template <class ELFT>
-static void removeUnusedSyntheticSections(std::vector<OutputSectionBase *> &V) {
+static void removeUnusedSyntheticSections(std::vector<OutputSection *> &V) {
// All input synthetic sections that can be empty are placed after
// all regular ones. We iterate over them all and exit at first
// non-synthetic.
@@ -1056,7 +1051,7 @@ static void removeUnusedSyntheticSections(std::vector<OutputSectionBase *> &V) {
if (!SS->empty() || !SS->OutSec)
continue;
- OutputSection<ELFT> *OutSec = cast<OutputSection<ELFT>>(SS->OutSec);
+ OutputSection *OutSec = cast<OutputSection>(SS->OutSec);
OutSec->Sections.erase(
std::find(OutSec->Sections.begin(), OutSec->Sections.end(), SS));
// If there is no other sections in output section, remove it from output.
@@ -1077,7 +1072,7 @@ template <class ELFT> void Writer<ELFT>::finalizeSections() {
// addresses of each section by section name. Add such symbols.
if (!Config->Relocatable) {
addStartEndSymbols();
- for (OutputSectionBase *Sec : OutputSections)
+ for (OutputSection *Sec : OutputSections)
addStartStopSymbols(Sec);
}
@@ -1140,7 +1135,7 @@ template <class ELFT> void Writer<ELFT>::finalizeSections() {
Out<ELFT>::ElfHeader->SectionIndex = 1;
unsigned I = 1;
- for (OutputSectionBase *Sec : OutputSections) {
+ for (OutputSection *Sec : OutputSections) {
Sec->SectionIndex = I++;
Sec->ShName = In<ELFT>::ShStrTab->addString(Sec->Name);
}
@@ -1164,8 +1159,8 @@ template <class ELFT> void Writer<ELFT>::finalizeSections() {
// Fill other section headers. The dynamic table is finalized
// at the end because some tags like RELSZ depend on result
// of finalizing other sections.
- for (OutputSectionBase *Sec : OutputSections)
- Sec->finalize();
+ for (OutputSection *Sec : OutputSections)
+ Sec->finalize<ELFT>();
// Dynamic section must be the last one in this list and dynamic
// symbol table section (DynSymTab) must be the first one.
@@ -1182,9 +1177,9 @@ template <class ELFT> void Writer<ELFT>::finalizeSections() {
template <class ELFT> void Writer<ELFT>::addPredefinedSections() {
// Add BSS sections.
- auto Add = [=](OutputSection<ELFT> *Sec) {
+ auto Add = [=](OutputSection *Sec) {
if (!Sec->Sections.empty()) {
- Sec->assignOffsets();
+ Sec->assignOffsets<ELFT>();
OutputSections.push_back(Sec);
}
};
@@ -1193,7 +1188,7 @@ template <class ELFT> void Writer<ELFT>::addPredefinedSections() {
// ARM ABI requires .ARM.exidx to be terminated by some piece of data.
// We have the terminater synthetic section class. Add that at the end.
- auto *OS = dyn_cast_or_null<OutputSection<ELFT>>(findSection(".ARM.exidx"));
+ auto *OS = dyn_cast_or_null<OutputSection>(findSection(".ARM.exidx"));
if (OS && !OS->Sections.empty() && !Config->Relocatable)
OS->addSection(make<ARMExidxSentinelSection<ELFT>>());
}
@@ -1201,7 +1196,7 @@ template <class ELFT> void Writer<ELFT>::addPredefinedSections() {
// The linker is expected to define SECNAME_start and SECNAME_end
// symbols for a few sections. This function defines them.
template <class ELFT> void Writer<ELFT>::addStartEndSymbols() {
- auto Define = [&](StringRef Start, StringRef End, OutputSectionBase *OS) {
+ auto Define = [&](StringRef Start, StringRef End, OutputSection *OS) {
// These symbols resolve to the image base if the section does not exist.
// A special value -1 indicates end of the section.
addOptionalSynthetic<ELFT>(Start, OS, 0);
@@ -1213,7 +1208,7 @@ template <class ELFT> void Writer<ELFT>::addStartEndSymbols() {
Define("__init_array_start", "__init_array_end", Out<ELFT>::InitArray);
Define("__fini_array_start", "__fini_array_end", Out<ELFT>::FiniArray);
- if (OutputSectionBase *Sec = findSection(".ARM.exidx"))
+ if (OutputSection *Sec = findSection(".ARM.exidx"))
Define("__exidx_start", "__exidx_end", Sec);
}
@@ -1223,7 +1218,7 @@ template <class ELFT> void Writer<ELFT>::addStartEndSymbols() {
// respectively. This is not requested by the ELF standard, but GNU ld and
// gold provide the feature, and used by many programs.
template <class ELFT>
-void Writer<ELFT>::addStartStopSymbols(OutputSectionBase *Sec) {
+void Writer<ELFT>::addStartStopSymbols(OutputSection *Sec) {
StringRef S = Sec->Name;
if (!isValidCIdentifier(S))
return;
@@ -1231,15 +1226,14 @@ void Writer<ELFT>::addStartStopSymbols(OutputSectionBase *Sec) {
addOptionalSynthetic<ELFT>(Saver.save("__stop_" + S), Sec, -1, STV_DEFAULT);
}
-template <class ELFT>
-OutputSectionBase *Writer<ELFT>::findSection(StringRef Name) {
- for (OutputSectionBase *Sec : OutputSections)
+template <class ELFT> OutputSection *Writer<ELFT>::findSection(StringRef Name) {
+ for (OutputSection *Sec : OutputSections)
if (Sec->Name == Name)
return Sec;
return nullptr;
}
-template <class ELFT> static bool needsPtLoad(OutputSectionBase *Sec) {
+template <class ELFT> static bool needsPtLoad(OutputSection *Sec) {
if (!(Sec->Flags & SHF_ALLOC))
return false;
@@ -1277,13 +1271,13 @@ template <class ELFT> std::vector<PhdrEntry> Writer<ELFT>::createPhdrs() {
AddHdr(PT_PHDR, PF_R)->add(Out<ELFT>::ProgramHeaders);
// PT_INTERP must be the second entry if exists.
- if (OutputSectionBase *Sec = findSection(".interp"))
+ if (OutputSection *Sec = findSection(".interp"))
AddHdr(PT_INTERP, Sec->getPhdrFlags())->add(Sec);
// Add the first PT_LOAD segment for regular output sections.
uintX_t Flags = computeFlags<ELFT>(PF_R);
PhdrEntry *Load = AddHdr(PT_LOAD, Flags);
- for (OutputSectionBase *Sec : OutputSections) {
+ for (OutputSection *Sec : OutputSections) {
if (!(Sec->Flags & SHF_ALLOC))
break;
if (!needsPtLoad<ELFT>(Sec))
@@ -1305,7 +1299,7 @@ template <class ELFT> std::vector<PhdrEntry> Writer<ELFT>::createPhdrs() {
// Add a TLS segment if any.
PhdrEntry TlsHdr(PT_TLS, PF_R);
- for (OutputSectionBase *Sec : OutputSections)
+ for (OutputSection *Sec : OutputSections)
if (Sec->Flags & SHF_TLS)
TlsHdr.add(Sec);
if (TlsHdr.First)
@@ -1319,7 +1313,7 @@ template <class ELFT> std::vector<PhdrEntry> Writer<ELFT>::createPhdrs() {
// PT_GNU_RELRO includes all sections that should be marked as
// read-only by dynamic linker after proccessing relocations.
PhdrEntry RelRo(PT_GNU_RELRO, PF_R);
- for (OutputSectionBase *Sec : OutputSections)
+ for (OutputSection *Sec : OutputSections)
if (needsPtLoad<ELFT>(Sec) && isRelroSection<ELFT>(Sec))
RelRo.add(Sec);
if (RelRo.First)
@@ -1333,7 +1327,7 @@ template <class ELFT> std::vector<PhdrEntry> Writer<ELFT>::createPhdrs() {
// PT_OPENBSD_RANDOMIZE specifies the location and size of a part of the
// memory image of the program that must be filled with random data before any
// code in the object is executed.
- if (OutputSectionBase *Sec = findSection(".openbsd.randomdata"))
+ if (OutputSection *Sec = findSection(".openbsd.randomdata"))
AddHdr(PT_OPENBSD_RANDOMIZE, Sec->getPhdrFlags())->add(Sec);
// PT_GNU_STACK is a special section to tell the loader to make the
@@ -1356,7 +1350,7 @@ template <class ELFT> std::vector<PhdrEntry> Writer<ELFT>::createPhdrs() {
// Create one PT_NOTE per a group of contiguous .note sections.
PhdrEntry *Note = nullptr;
- for (OutputSectionBase *Sec : OutputSections) {
+ for (OutputSection *Sec : OutputSections) {
if (Sec->Type == SHT_NOTE) {
if (!Note || Script<ELFT>::X->hasLMA(Sec->Name))
Note = AddHdr(PT_NOTE, PF_R);
@@ -1374,7 +1368,7 @@ void Writer<ELFT>::addPtArmExid(std::vector<PhdrEntry> &Phdrs) {
return;
auto I = std::find_if(
OutputSections.begin(), OutputSections.end(),
- [](OutputSectionBase *Sec) { return Sec->Type == SHT_ARM_EXIDX; });
+ [](OutputSection *Sec) { return Sec->Type == SHT_ARM_EXIDX; });
if (I == OutputSections.end())
return;
@@ -1403,7 +1397,7 @@ template <class ELFT> void Writer<ELFT>::fixSectionAlignments() {
auto I = std::find(OutputSections.begin(), End, P.Last);
if (I == End || (I + 1) == End)
continue;
- OutputSectionBase *Sec = *(I + 1);
+ OutputSection *Sec = *(I + 1);
if (needsPtLoad<ELFT>(Sec))
Sec->PageAlign = true;
}
@@ -1411,7 +1405,7 @@ template <class ELFT> void Writer<ELFT>::fixSectionAlignments() {
template <class ELFT>
bool elf::allocateHeaders(std::vector<PhdrEntry> &Phdrs,
- ArrayRef<OutputSectionBase *> OutputSections,
+ ArrayRef<OutputSection *> OutputSections,
uint64_t Min) {
auto FirstPTLoad =
std::find_if(Phdrs.begin(), Phdrs.end(),
@@ -1440,7 +1434,7 @@ bool elf::allocateHeaders(std::vector<PhdrEntry> &Phdrs,
return true;
if (FirstPTLoad->First)
- for (OutputSectionBase *Sec : OutputSections)
+ for (OutputSection *Sec : OutputSections)
if (Sec->FirstInPtLoad == FirstPTLoad->First)
Sec->FirstInPtLoad = Out<ELFT>::ElfHeader;
FirstPTLoad->First = Out<ELFT>::ElfHeader;
@@ -1474,7 +1468,7 @@ template <class ELFT> void Writer<ELFT>::assignAddresses() {
if (AllocateHeader)
VA += getHeaderSize<ELFT>();
uintX_t ThreadBssOffset = 0;
- for (OutputSectionBase *Sec : OutputSections) {
+ for (OutputSection *Sec : OutputSections) {
uintX_t Alignment = Sec->Addralign;
if (Sec->PageAlign)
Alignment = std::max<uintX_t>(Alignment, Config->MaxPageSize);
@@ -1502,8 +1496,8 @@ template <class ELFT> void Writer<ELFT>::assignAddresses() {
// virtual address (modulo the page size) so that the loader can load
// executables without any address adjustment.
template <class ELFT, class uintX_t>
-static uintX_t getFileAlignment(uintX_t Off, OutputSectionBase *Sec) {
- OutputSectionBase *First = Sec->FirstInPtLoad;
+static uintX_t getFileAlignment(uintX_t Off, OutputSection *Sec) {
+ OutputSection *First = Sec->FirstInPtLoad;
// If the section is not in a PT_LOAD, we just have to align it.
if (!First)
return alignTo(Off, Sec->Addralign);
@@ -1519,7 +1513,7 @@ static uintX_t getFileAlignment(uintX_t Off, OutputSectionBase *Sec) {
}
template <class ELFT, class uintX_t>
-static uintX_t setOffset(OutputSectionBase *Sec, uintX_t Off) {
+static uintX_t setOffset(OutputSection *Sec, uintX_t Off) {
if (Sec->Type == SHT_NOBITS) {
Sec->Offset = Off;
return Off;
@@ -1532,7 +1526,7 @@ static uintX_t setOffset(OutputSectionBase *Sec, uintX_t Off) {
template <class ELFT> void Writer<ELFT>::assignFileOffsetsBinary() {
uintX_t Off = 0;
- for (OutputSectionBase *Sec : OutputSections)
+ for (OutputSection *Sec : OutputSections)
if (Sec->Flags & SHF_ALLOC)
Off = setOffset<ELFT>(Sec, Off);
FileSize = alignTo(Off, sizeof(uintX_t));
@@ -1544,7 +1538,7 @@ template <class ELFT> void Writer<ELFT>::assignFileOffsets() {
Off = setOffset<ELFT>(Out<ELFT>::ElfHeader, Off);
Off = setOffset<ELFT>(Out<ELFT>::ProgramHeaders, Off);
- for (OutputSectionBase *Sec : OutputSections)
+ for (OutputSection *Sec : OutputSections)
Off = setOffset<ELFT>(Sec, Off);
SectionHeaderOff = alignTo(Off, sizeof(uintX_t));
@@ -1555,8 +1549,8 @@ template <class ELFT> void Writer<ELFT>::assignFileOffsets() {
// file offsets and VAs to all sections.
template <class ELFT> void Writer<ELFT>::setPhdrs() {
for (PhdrEntry &P : Phdrs) {
- OutputSectionBase *First = P.First;
- OutputSectionBase *Last = P.Last;
+ OutputSection *First = P.First;
+ OutputSection *Last = P.Last;
if (First) {
P.p_filesz = Last->Offset - First->Offset;
if (Last->Type != SHT_NOBITS)
@@ -1604,7 +1598,7 @@ template <class ELFT> typename ELFT::uint Writer<ELFT>::getEntryAddr() {
return Addr;
// Case 4
- if (OutputSectionBase *Sec = findSection(".text")) {
+ if (OutputSection *Sec = findSection(".text")) {
if (Config->WarnMissingEntry)
warn("cannot find entry symbol " + Config->Entry + "; defaulting to 0x" +
utohexstr(Sec->Addr));
@@ -1636,8 +1630,8 @@ static uint16_t getELFType() {
// to each section. This function fixes some predefined
// symbol values that depend on section address and size.
template <class ELFT> void Writer<ELFT>::fixPredefinedSymbols() {
- auto Set = [](DefinedSynthetic *S1, DefinedSynthetic *S2,
- OutputSectionBase *Sec, uint64_t Value) {
+ auto Set = [](DefinedSynthetic *S1, DefinedSynthetic *S2, OutputSection *Sec,
+ uint64_t Value) {
if (S1) {
S1->Section = Sec;
S1->Value = Value;
@@ -1679,7 +1673,7 @@ template <class ELFT> void Writer<ELFT>::fixPredefinedSymbols() {
// Find GP-relative section with the lowest address
// and use this address to calculate default _gp value.
uintX_t Gp = -1;
- for (const OutputSectionBase * OS : OutputSections)
+ for (const OutputSection *OS : OutputSections)
if ((OS->Flags & SHF_MIPS_GPREL) && OS->Addr < Gp)
Gp = OS->Addr;
if (Gp != (uintX_t)-1)
@@ -1742,7 +1736,7 @@ template <class ELFT> void Writer<ELFT>::writeHeader() {
// Write the section header table. Note that the first table entry is null.
auto *SHdrs = reinterpret_cast<Elf_Shdr *>(Buf + EHdr->e_shoff);
- for (OutputSectionBase *Sec : OutputSections)
+ for (OutputSection *Sec : OutputSections)
Sec->writeHeaderTo<ELFT>(++SHdrs);
}
@@ -1796,9 +1790,9 @@ template <class ELFT> void Writer<ELFT>::openFile() {
template <class ELFT> void Writer<ELFT>::writeSectionsBinary() {
uint8_t *Buf = Buffer->getBufferStart();
- for (OutputSectionBase *Sec : OutputSections)
+ for (OutputSection *Sec : OutputSections)
if (Sec->Flags & SHF_ALLOC)
- Sec->writeTo(Buf + Sec->Offset);
+ Sec->writeTo<ELFT>(Buf + Sec->Offset);
}
// Write section contents to a mmap'ed file.
@@ -1810,28 +1804,28 @@ template <class ELFT> void Writer<ELFT>::writeSections() {
Out<ELFT>::Opd = findSection(".opd");
if (Out<ELFT>::Opd) {
Out<ELFT>::OpdBuf = Buf + Out<ELFT>::Opd->Offset;
- Out<ELFT>::Opd->writeTo(Buf + Out<ELFT>::Opd->Offset);
+ Out<ELFT>::Opd->template writeTo<ELFT>(Buf + Out<ELFT>::Opd->Offset);
}
- OutputSectionBase *EhFrameHdr =
+ OutputSection *EhFrameHdr =
In<ELFT>::EhFrameHdr ? In<ELFT>::EhFrameHdr->OutSec : nullptr;
// In -r or -emit-relocs mode, write the relocation sections first as in
// ELf_Rel targets we might find out that we need to modify the relocated
// section while doing it.
- for (OutputSectionBase *Sec : OutputSections)
+ for (OutputSection *Sec : OutputSections)
if (Sec->Type == SHT_REL || Sec->Type == SHT_RELA)
- Sec->writeTo(Buf + Sec->Offset);
+ Sec->writeTo<ELFT>(Buf + Sec->Offset);
- for (OutputSectionBase *Sec : OutputSections)
+ for (OutputSection *Sec : OutputSections)
if (Sec != Out<ELFT>::Opd && Sec != EhFrameHdr && Sec->Type != SHT_REL &&
Sec->Type != SHT_RELA)
- Sec->writeTo(Buf + Sec->Offset);
+ Sec->writeTo<ELFT>(Buf + Sec->Offset);
// The .eh_frame_hdr depends on .eh_frame section contents, therefore
// it should be written after .eh_frame is written.
if (EhFrameHdr)
- EhFrameHdr->writeTo(Buf + EhFrameHdr->Offset);
+ EhFrameHdr->writeTo<ELFT>(Buf + EhFrameHdr->Offset);
}
template <class ELFT> void Writer<ELFT>::writeBuildId() {
@@ -1850,19 +1844,19 @@ template void elf::writeResult<ELF64LE>();
template void elf::writeResult<ELF64BE>();
template bool elf::allocateHeaders<ELF32LE>(std::vector<PhdrEntry> &,
- ArrayRef<OutputSectionBase *>,
+ ArrayRef<OutputSection *>,
uint64_t);
template bool elf::allocateHeaders<ELF32BE>(std::vector<PhdrEntry> &,
- ArrayRef<OutputSectionBase *>,
+ ArrayRef<OutputSection *>,
uint64_t);
template bool elf::allocateHeaders<ELF64LE>(std::vector<PhdrEntry> &,
- ArrayRef<OutputSectionBase *>,
+ ArrayRef<OutputSection *>,
uint64_t);
template bool elf::allocateHeaders<ELF64BE>(std::vector<PhdrEntry> &,
- ArrayRef<OutputSectionBase *>,
+ ArrayRef<OutputSection *>,
uint64_t);
-template bool elf::isRelroSection<ELF32LE>(const OutputSectionBase *);
-template bool elf::isRelroSection<ELF32BE>(const OutputSectionBase *);
-template bool elf::isRelroSection<ELF64LE>(const OutputSectionBase *);
-template bool elf::isRelroSection<ELF64BE>(const OutputSectionBase *);
+template bool elf::isRelroSection<ELF32LE>(const OutputSection *);
+template bool elf::isRelroSection<ELF32BE>(const OutputSection *);
+template bool elf::isRelroSection<ELF64LE>(const OutputSection *);
+template bool elf::isRelroSection<ELF64BE>(const OutputSection *);
diff --git a/lld/ELF/Writer.h b/lld/ELF/Writer.h
index 93ea264d7c1..c1cf149a070 100644
--- a/lld/ELF/Writer.h
+++ b/lld/ELF/Writer.h
@@ -18,20 +18,20 @@
namespace lld {
namespace elf {
class InputFile;
-class OutputSectionBase;
+class OutputSection;
class InputSectionBase;
template <class ELFT> class ObjectFile;
template <class ELFT> class SymbolTable;
template <class ELFT> void writeResult();
template <class ELFT> void markLive();
-template <class ELFT> bool isRelroSection(const OutputSectionBase *Sec);
+template <class ELFT> bool isRelroSection(const OutputSection *Sec);
// This describes a program header entry.
// Each contains type, access flags and range of output sections that will be
// placed in it.
struct PhdrEntry {
PhdrEntry(unsigned Type, unsigned Flags);
- void add(OutputSectionBase *Sec);
+ void add(OutputSection *Sec);
uint64_t p_paddr = 0;
uint64_t p_vaddr = 0;
@@ -42,16 +42,16 @@ struct PhdrEntry {
uint32_t p_type = 0;
uint32_t p_flags = 0;
- OutputSectionBase *First = nullptr;
- OutputSectionBase *Last = nullptr;
+ OutputSection *First = nullptr;
+ OutputSection *Last = nullptr;
bool HasLMA = false;
};
llvm::StringRef getOutputSectionName(llvm::StringRef Name);
template <class ELFT>
-bool allocateHeaders(std::vector<PhdrEntry> &,
- llvm::ArrayRef<OutputSectionBase *>, uint64_t Min);
+bool allocateHeaders(std::vector<PhdrEntry> &, llvm::ArrayRef<OutputSection *>,
+ uint64_t Min);
template <class ELFT> uint32_t getMipsEFlags();
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