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Merge MCELF.h into MCSymbolELF.h.

Browse Source 
Now that we have a dedicated type for ELF symbol, these helper functions can
become member function of MCSymbolELF.

llvm-svn: 238864
This commit is contained in:
Rafael Espindola 2015-06-02 20:38:46 +00:00
parent eca59314c9
commit 1fc8198d33
20 changed files with 173 additions and 202 deletions
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35
include/llvm/MC/MCELF.h
View File

@ -1,35 +0,0 @@
//===- lib/MC/MCELF.h - ELF MC --------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains some support functions used by the ELF Streamer and
// ObjectWriter.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_MC_MCELF_H
#define LLVM_MC_MCELF_H
namespace llvm {
class MCSymbol;
class MCELF {
public:
static void SetBinding(const MCSymbol &Sym, unsigned Binding);
static unsigned GetBinding(const MCSymbol &Sym);
static void SetType(const MCSymbol &Sym, unsigned Type);
static unsigned GetType(const MCSymbol &Sym);
static void SetVisibility(MCSymbol &Sym, unsigned Visibility);
static unsigned GetVisibility(const MCSymbol &Sym);
static void setOther(MCSymbol &Sym, unsigned Other);
static unsigned getOther(const MCSymbol &Sym);
};
}
#endif

5
include/llvm/MC/MCELFObjectWriter.h
View File

@ -21,16 +21,17 @@ class MCFixup;
class MCFragment;
class MCObjectWriter;
class MCSymbol;
class MCSymbolELF;
class MCValue;
class raw_pwrite_stream;
struct ELFRelocationEntry {
uint64_t Offset; // Where is the relocation.
const MCSymbol *Symbol; // The symbol to relocate with.
const MCSymbolELF *Symbol; // The symbol to relocate with.
unsigned Type; // The type of the relocation.
uint64_t Addend; // The addend to use.
ELFRelocationEntry(uint64_t Offset, const MCSymbol *Symbol, unsigned Type,
ELFRelocationEntry(uint64_t Offset, const MCSymbolELF *Symbol, unsigned Type,
uint64_t Addend)
: Offset(Offset), Symbol(Symbol), Type(Type), Addend(Addend) {}
};

12
include/llvm/MC/MCSymbolELF.h
View File

@ -24,6 +24,18 @@ public:
const MCExpr *getSize() const { return SymbolSize; }
void setVisibility(unsigned Visibility);
unsigned getVisibility() const;
void setOther(unsigned Other);
unsigned getOther() const;
void setType(unsigned Type) const;
unsigned getType() const;
void setBinding(unsigned Binding) const;
unsigned getBinding() const;
static bool classof(const MCSymbol *S) { return S->isELF(); }
};
}

2
lib/MC/CMakeLists.txt
View File

@ -12,7 +12,6 @@ add_llvm_library(LLVMMC
MCCodeGenInfo.cpp
MCContext.cpp
MCDwarf.cpp
MCELF.cpp
MCELFObjectTargetWriter.cpp
MCELFStreamer.cpp
MCExpr.cpp
@ -36,6 +35,7 @@ add_llvm_library(LLVMMC
MCStreamer.cpp
MCSubtargetInfo.cpp
MCSymbol.cpp
MCSymbolELF.cpp
MCSymbolizer.cpp
MCTargetOptions.cpp
MCValue.cpp

77
lib/MC/ELFObjectWriter.cpp
View File

@ -21,7 +21,6 @@
#include "llvm/MC/MCAsmLayout.h"
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCELF.h"
#include "llvm/MC/MCELFSymbolFlags.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCFixupKindInfo.h"
@ -73,7 +72,7 @@ public:
class ELFObjectWriter : public MCObjectWriter {
static bool isFixupKindPCRel(const MCAssembler &Asm, unsigned Kind);
static uint64_t SymbolValue(const MCSymbol &Sym, const MCAsmLayout &Layout);
static bool isInSymtab(const MCAsmLayout &Layout, const MCSymbol &Symbol,
static bool isInSymtab(const MCAsmLayout &Layout, const MCSymbolELF &Symbol,
bool Used, bool Renamed);
static bool isLocal(const MCSymbol &Symbol, bool IsUsedInReloc,
bool IsSignature);
@ -86,8 +85,8 @@ class ELFObjectWriter : public MCObjectWriter {
// Support lexicographic sorting.
bool operator<(const ELFSymbolData &RHS) const {
unsigned LHSType = MCELF::GetType(*Symbol);
unsigned RHSType = MCELF::GetType(*RHS.Symbol);
unsigned LHSType = Symbol->getType();
unsigned RHSType = RHS.Symbol->getType();
if (LHSType == ELF::STT_SECTION && RHSType != ELF::STT_SECTION)
return false;
if (LHSType != ELF::STT_SECTION && RHSType == ELF::STT_SECTION)
@ -103,7 +102,7 @@ class ELFObjectWriter : public MCObjectWriter {
SmallPtrSet<const MCSymbol *, 16> UsedInReloc;
SmallPtrSet<const MCSymbol *, 16> WeakrefUsedInReloc;
DenseMap<const MCSymbol *, const MCSymbol *> Renames;
DenseMap<const MCSymbolELF *, const MCSymbolELF *> Renames;
llvm::DenseMap<const MCSectionELF *, std::vector<ELFRelocationEntry>>
Relocations;
@ -378,14 +377,15 @@ void ELFObjectWriter::ExecutePostLayoutBinding(MCAssembler &Asm,
// The presence of symbol versions causes undefined symbols and
// versions declared with @@@ to be renamed.
for (const MCSymbol &Alias : Asm.symbols()) {
for (const MCSymbol &A : Asm.symbols()) {
const auto &Alias = cast<MCSymbolELF>(A);
// Not an alias.
if (!Alias.isVariable())
continue;
auto *Ref = dyn_cast<MCSymbolRefExpr>(Alias.getVariableValue());
if (!Ref)
continue;
const MCSymbol &Symbol = Ref->getSymbol();
const auto &Symbol = cast<MCSymbolELF>(Ref->getSymbol());
StringRef AliasName = Alias.getName();
size_t Pos = AliasName.find('@');
@ -395,7 +395,7 @@ void ELFObjectWriter::ExecutePostLayoutBinding(MCAssembler &Asm,
// Aliases defined with .symvar copy the binding from the symbol they alias.
// This is the first place we are able to copy this information.
Alias.setExternal(Symbol.isExternal());
MCELF::SetBinding(Alias, MCELF::GetBinding(Symbol));
Alias.setBinding(Symbol.getBinding());
StringRef Rest = AliasName.substr(Pos);
if (!Symbol.isUndefined() && !Rest.startswith("@@@"))
@ -448,7 +448,7 @@ static uint8_t mergeTypeForSet(uint8_t origType, uint8_t newType) {
void ELFObjectWriter::writeSymbol(SymbolTableWriter &Writer,
uint32_t StringIndex, ELFSymbolData &MSD,
const MCAsmLayout &Layout) {
const MCSymbol &Symbol = *MSD.Symbol;
const auto &Symbol = cast<MCSymbolELF>(*MSD.Symbol);
assert((!Symbol.getFragment() ||
(Symbol.getFragment()->getParent() == &Symbol.getSection())) &&
"The symbol's section doesn't match the fragment's symbol");
@ -460,17 +460,17 @@ void ELFObjectWriter::writeSymbol(SymbolTableWriter &Writer,
bool IsReserved = !Base || Symbol.isCommon();
// Binding and Type share the same byte as upper and lower nibbles
uint8_t Binding = MCELF::GetBinding(Symbol);
uint8_t Type = MCELF::GetType(Symbol);
uint8_t Binding = Symbol.getBinding();
uint8_t Type = Symbol.getType();
if (Base) {
Type = mergeTypeForSet(Type, MCELF::GetType(*Base));
Type = mergeTypeForSet(Type, Base->getType());
}
uint8_t Info = (Binding << ELF_STB_Shift) | (Type << ELF_STT_Shift);
// Other and Visibility share the same byte with Visibility using the lower
// 2 bits
uint8_t Visibility = MCELF::GetVisibility(Symbol);
uint8_t Other = MCELF::getOther(Symbol) << (ELF_STO_Shift - ELF_STV_Shift);
uint8_t Visibility = Symbol.getVisibility();
uint8_t Other = Symbol.getOther() << (ELF_STO_Shift - ELF_STV_Shift);
Other |= Visibility;
uint64_t Value = SymbolValue(*MSD.Symbol, Layout);
@ -497,8 +497,9 @@ void ELFObjectWriter::writeSymbol(SymbolTableWriter &Writer,
// allows us to omit some local symbols from the symbol table.
bool ELFObjectWriter::shouldRelocateWithSymbol(const MCAssembler &Asm,
const MCSymbolRefExpr *RefA,
const MCSymbol *Sym, uint64_t C,
const MCSymbol *S, uint64_t C,
unsigned Type) const {
const auto *Sym = cast_or_null<MCSymbolELF>(S);
// A PCRel relocation to an absolute value has no symbol (or section). We
// represent that with a relocation to a null section.
if (!RefA)
@ -537,7 +538,7 @@ bool ELFObjectWriter::shouldRelocateWithSymbol(const MCAssembler &Asm,
if (Sym->isUndefined())
return true;
unsigned Binding = MCELF::GetBinding(*Sym);
unsigned Binding = Sym->getBinding();
switch(Binding) {
default:
llvm_unreachable("Invalid Binding");
@ -614,11 +615,11 @@ static const MCSymbol *getWeakRef(const MCSymbolRefExpr &Ref) {
// True if the assembler knows nothing about the final value of the symbol.
// This doesn't cover the comdat issues, since in those cases the assembler
// can at least know that all symbols in the section will move together.
static bool isWeak(const MCSymbol &Sym) {
if (MCELF::GetType(Sym) == ELF::STT_GNU_IFUNC)
static bool isWeak(const MCSymbolELF &Sym) {
if (Sym.getType() == ELF::STT_GNU_IFUNC)
return true;
switch (MCELF::GetBinding(Sym)) {
switch (Sym.getBinding()) {
default:
llvm_unreachable("Unknown binding");
case ELF::STB_LOCAL:
@ -656,7 +657,7 @@ void ELFObjectWriter::RecordRelocation(MCAssembler &Asm,
Fixup.getLoc(),
"No relocation available to represent this relative expression");
const MCSymbol &SymB = RefB->getSymbol();
const auto &SymB = cast<MCSymbolELF>(RefB->getSymbol());
if (SymB.isUndefined())
Asm.getContext().reportFatalError(
@ -682,7 +683,7 @@ void ELFObjectWriter::RecordRelocation(MCAssembler &Asm,
// We either rejected the fixup or folded B into C at this point.
const MCSymbolRefExpr *RefA = Target.getSymA();
const MCSymbol *SymA = RefA ? &RefA->getSymbol() : nullptr;
const auto *SymA = RefA ? cast<MCSymbolELF>(&RefA->getSymbol()) : nullptr;
unsigned Type = GetRelocType(Target, Fixup, IsPCRel);
bool RelocateWithSymbol = shouldRelocateWithSymbol(Asm, RefA, SymA, C, Type);
@ -701,14 +702,15 @@ void ELFObjectWriter::RecordRelocation(MCAssembler &Asm,
const MCSection *SecA =
(SymA && !SymA->isUndefined()) ? &SymA->getSection() : nullptr;
auto *ELFSec = cast_or_null<MCSectionELF>(SecA);
const MCSymbol *SectionSymbol = ELFSec ? ELFSec->getBeginSymbol() : nullptr;
const auto *SectionSymbol =
ELFSec ? cast<MCSymbolELF>(ELFSec->getBeginSymbol()) : nullptr;
ELFRelocationEntry Rec(FixupOffset, SectionSymbol, Type, Addend);
Relocations[&FixupSection].push_back(Rec);
return;
}
if (SymA) {
if (const MCSymbol *R = Renames.lookup(SymA))
if (const MCSymbolELF *R = Renames.lookup(SymA))
SymA = R;
if (const MCSymbol *WeakRef = getWeakRef(*RefA))
@ -722,7 +724,7 @@ void ELFObjectWriter::RecordRelocation(MCAssembler &Asm,
}
bool ELFObjectWriter::isInSymtab(const MCAsmLayout &Layout,
const MCSymbol &Symbol, bool Used,
const MCSymbolELF &Symbol, bool Used,
bool Renamed) {
if (Symbol.isVariable()) {
const MCExpr *Expr = Symbol.getVariableValue();
@ -747,11 +749,11 @@ bool ELFObjectWriter::isInSymtab(const MCAsmLayout &Layout,
return false;
}
bool IsGlobal = MCELF::GetBinding(Symbol) == ELF::STB_GLOBAL;
bool IsGlobal = Symbol.getBinding() == ELF::STB_GLOBAL;
if (!Symbol.isVariable() && Symbol.isUndefined() && !IsGlobal)
return false;
if (MCELF::GetType(Symbol) == ELF::STT_SECTION)
if (Symbol.getType() == ELF::STT_SECTION)
return true;
if (Symbol.isTemporary())
@ -802,7 +804,8 @@ void ELFObjectWriter::computeSymbolTable(
// Add the data for the symbols.
bool HasLargeSectionIndex = false;
for (const MCSymbol &Symbol : Asm.symbols()) {
for (const MCSymbol &S : Asm.symbols()) {
const auto &Symbol = cast<MCSymbolELF>(S);
bool Used = UsedInReloc.count(&Symbol);
bool WeakrefUsed = WeakrefUsedInReloc.count(&Symbol);
bool isSignature = RevGroupMap.count(&Symbol);
@ -817,8 +820,8 @@ void ELFObjectWriter::computeSymbolTable(
// Undefined symbols are global, but this is the first place we
// are able to set it.
bool Local = isLocal(Symbol, Used, isSignature);
if (!Local && MCELF::GetBinding(Symbol) == ELF::STB_LOCAL)
MCELF::SetBinding(Symbol, ELF::STB_GLOBAL);
if (!Local && Symbol.getBinding() == ELF::STB_LOCAL)
Symbol.setBinding(ELF::STB_GLOBAL);
if (Symbol.isAbsolute()) {
MSD.SectionIndex = ELF::SHN_ABS;
@ -834,7 +837,7 @@ void ELFObjectWriter::computeSymbolTable(
MSD.SectionIndex = ELF::SHN_UNDEF;
}
if (!Used && WeakrefUsed)
MCELF::SetBinding(Symbol, ELF::STB_WEAK);
Symbol.setBinding(ELF::STB_WEAK);
} else {
const MCSectionELF &Section =
static_cast<const MCSectionELF &>(Symbol.getSection());
@ -884,7 +887,7 @@ void ELFObjectWriter::computeSymbolTable(
}
// Sections have their own string table
if (MCELF::GetType(Symbol) != ELF::STT_SECTION)
if (Symbol.getType() != ELF::STT_SECTION)
MSD.Name = StrTabBuilder.add(Name);
if (Local)
@ -920,7 +923,7 @@ void ELFObjectWriter::computeSymbolTable(
unsigned Index = FileNames.size() + 1;
for (ELFSymbolData &MSD : LocalSymbolData) {
unsigned StringIndex = MCELF::GetType(*MSD.Symbol) == ELF::STT_SECTION
unsigned StringIndex = MSD.Symbol->getType() == ELF::STT_SECTION
? 0
: StrTabBuilder.getOffset(MSD.Name);
MSD.Symbol->setIndex(Index++);
@ -934,7 +937,7 @@ void ELFObjectWriter::computeSymbolTable(
unsigned StringIndex = StrTabBuilder.getOffset(MSD.Name);
MSD.Symbol->setIndex(Index++);
writeSymbol(Writer, StringIndex, MSD, Layout);
assert(MCELF::GetBinding(*MSD.Symbol) != ELF::STB_LOCAL);
assert(MSD.Symbol->getBinding() != ELF::STB_LOCAL);
}
uint64_t SecEnd = OS.tell();
@ -1346,8 +1349,9 @@ void ELFObjectWriter::WriteObject(MCAssembler &Asm,
}
bool ELFObjectWriter::IsSymbolRefDifferenceFullyResolvedImpl(
const MCAssembler &Asm, const MCSymbol &SymA, const MCFragment &FB,
const MCAssembler &Asm, const MCSymbol &SA, const MCFragment &FB,
bool InSet, bool IsPCRel) const {
const auto &SymA = cast<MCSymbolELF>(SA);
if (IsPCRel) {
assert(!InSet);
if (::isWeak(SymA))
@ -1357,7 +1361,8 @@ bool ELFObjectWriter::IsSymbolRefDifferenceFullyResolvedImpl(
InSet, IsPCRel);
}
bool ELFObjectWriter::isWeak(const MCSymbol &Sym) const {
bool ELFObjectWriter::isWeak(const MCSymbol &S) const {
const auto &Sym = cast<MCSymbolELF>(S);
if (::isWeak(Sym))
return true;
@ -1367,7 +1372,7 @@ bool ELFObjectWriter::isWeak(const MCSymbol &Sym) const {
// We could try to return false for more cases, like the reference
// being in the same comdat or Sym being an alias to another global,
// but it is not clear if it is worth the effort.
if (MCELF::GetBinding(Sym) != ELF::STB_GLOBAL)
if (Sym.getBinding() != ELF::STB_GLOBAL)
return false;
if (!Sym.isInSection())

65
lib/MC/MCELFStreamer.cpp
View File

@ -20,7 +20,6 @@
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCCodeEmitter.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCELF.h"
#include "llvm/MC/MCELFSymbolFlags.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
@ -107,7 +106,8 @@ void MCELFStreamer::InitSections(bool NoExecStack) {
SwitchSection(Ctx.getAsmInfo()->getNonexecutableStackSection(Ctx));
}
void MCELFStreamer::EmitLabel(MCSymbol *Symbol) {
void MCELFStreamer::EmitLabel(MCSymbol *S) {
auto *Symbol = cast<MCSymbolELF>(S);
assert(Symbol->isUndefined() && "Cannot define a symbol twice!");
MCObjectStreamer::EmitLabel(Symbol);
@ -115,7 +115,7 @@ void MCELFStreamer::EmitLabel(MCSymbol *Symbol) {
const MCSectionELF &Section =
static_cast<const MCSectionELF&>(Symbol->getSection());
if (Section.getFlags() & ELF::SHF_TLS)
MCELF::SetType(*Symbol, ELF::STT_TLS);
Symbol->setType(ELF::STT_TLS);
}
void MCELFStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {
@ -160,14 +160,14 @@ void MCELFStreamer::ChangeSection(MCSection *Section,
this->MCObjectStreamer::ChangeSection(Section, Subsection);
MCContext &Ctx = getContext();
MCSymbol *Begin = Section->getBeginSymbol();
auto *Begin = cast_or_null<MCSymbolELF>(Section->getBeginSymbol());
if (!Begin) {
Begin = Ctx.getOrCreateSectionSymbol(*SectionELF);
Section->setBeginSymbol(Begin);
}
if (Begin->isUndefined()) {
Asm.registerSymbol(*Begin);
MCELF::SetType(*Begin, ELF::STT_SECTION);
Begin->setType(ELF::STT_SECTION);
}
}
@ -197,8 +197,8 @@ static unsigned CombineSymbolTypes(unsigned T1, unsigned T2) {
return T2;
}
bool MCELFStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
MCSymbolAttr Attribute) {
bool MCELFStreamer::EmitSymbolAttribute(MCSymbol *S, MCSymbolAttr Attribute) {
auto *Symbol = cast<MCSymbolELF>(S);
// Indirect symbols are handled differently, to match how 'as' handles
// them. This makes writing matching .o files easier.
if (Attribute == MCSA_IndirectSymbol) {
@ -238,91 +238,85 @@ bool MCELFStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
break;
case MCSA_ELF_TypeGnuUniqueObject:
MCELF::SetType(
*Symbol, CombineSymbolTypes(MCELF::GetType(*Symbol), ELF::STT_OBJECT));
MCELF::SetBinding(*Symbol, ELF::STB_GNU_UNIQUE);
Symbol->setType(CombineSymbolTypes(Symbol->getType(), ELF::STT_OBJECT));
Symbol->setBinding(ELF::STB_GNU_UNIQUE);
Symbol->setExternal(true);
BindingExplicitlySet.insert(Symbol);
break;
case MCSA_Global:
MCELF::SetBinding(*Symbol, ELF::STB_GLOBAL);
Symbol->setBinding(ELF::STB_GLOBAL);
Symbol->setExternal(true);
BindingExplicitlySet.insert(Symbol);
break;
case MCSA_WeakReference:
case MCSA_Weak:
MCELF::SetBinding(*Symbol, ELF::STB_WEAK);
Symbol->setBinding(ELF::STB_WEAK);
Symbol->setExternal(true);
BindingExplicitlySet.insert(Symbol);
break;
case MCSA_Local:
MCELF::SetBinding(*Symbol, ELF::STB_LOCAL);
Symbol->setBinding(ELF::STB_LOCAL);
Symbol->setExternal(false);
BindingExplicitlySet.insert(Symbol);
break;
case MCSA_ELF_TypeFunction:
MCELF::SetType(*Symbol,
CombineSymbolTypes(MCELF::GetType(*Symbol), ELF::STT_FUNC));
Symbol->setType(CombineSymbolTypes(Symbol->getType(), ELF::STT_FUNC));
break;
case MCSA_ELF_TypeIndFunction:
MCELF::SetType(*Symbol, CombineSymbolTypes(MCELF::GetType(*Symbol),
ELF::STT_GNU_IFUNC));
Symbol->setType(CombineSymbolTypes(Symbol->getType(), ELF::STT_GNU_IFUNC));
break;
case MCSA_ELF_TypeObject:
MCELF::SetType(
*Symbol, CombineSymbolTypes(MCELF::GetType(*Symbol), ELF::STT_OBJECT));
Symbol->setType(CombineSymbolTypes(Symbol->getType(), ELF::STT_OBJECT));
break;
case MCSA_ELF_TypeTLS:
MCELF::SetType(*Symbol,
CombineSymbolTypes(MCELF::GetType(*Symbol), ELF::STT_TLS));
Symbol->setType(CombineSymbolTypes(Symbol->getType(), ELF::STT_TLS));
break;
case MCSA_ELF_TypeCommon:
// TODO: Emit these as a common symbol.
MCELF::SetType(
*Symbol, CombineSymbolTypes(MCELF::GetType(*Symbol), ELF::STT_OBJECT));
Symbol->setType(CombineSymbolTypes(Symbol->getType(), ELF::STT_OBJECT));
break;
case MCSA_ELF_TypeNoType:
MCELF::SetType(
*Symbol, CombineSymbolTypes(MCELF::GetType(*Symbol), ELF::STT_NOTYPE));
Symbol->setType(CombineSymbolTypes(Symbol->getType(), ELF::STT_NOTYPE));
break;
case MCSA_Protected:
MCELF::SetVisibility(*Symbol, ELF::STV_PROTECTED);
Symbol->setVisibility(ELF::STV_PROTECTED);
break;
case MCSA_Hidden:
MCELF::SetVisibility(*Symbol, ELF::STV_HIDDEN);
Symbol->setVisibility(ELF::STV_HIDDEN);
break;
case MCSA_Internal:
MCELF::SetVisibility(*Symbol, ELF::STV_INTERNAL);
Symbol->setVisibility(ELF::STV_INTERNAL);
break;
}
return true;
}
void MCELFStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
void MCELFStreamer::EmitCommonSymbol(MCSymbol *S, uint64_t Size,
unsigned ByteAlignment) {
auto *Symbol = cast<MCSymbolELF>(S);
getAssembler().registerSymbol(*Symbol);
if (!BindingExplicitlySet.count(Symbol)) {
MCELF::SetBinding(*Symbol, ELF::STB_GLOBAL);
Symbol->setBinding(ELF::STB_GLOBAL);
Symbol->setExternal(true);
}
MCELF::SetType(*Symbol, ELF::STT_OBJECT);
Symbol->setType(ELF::STT_OBJECT);
if (MCELF::GetBinding(*Symbol) == ELF_STB_Local) {
if (Symbol->getBinding() == ELF_STB_Local) {
MCSection *Section = getAssembler().getContext().getELFSection(
".bss", ELF::SHT_NOBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC);
@ -342,11 +336,12 @@ void MCELFStreamer::emitELFSize(MCSymbolELF *Symbol, const MCExpr *Value) {
Symbol->setSize(Value);
}
void MCELFStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
void MCELFStreamer::EmitLocalCommonSymbol(MCSymbol *S, uint64_t Size,
unsigned ByteAlignment) {
auto *Symbol = cast<MCSymbolELF>(S);
// FIXME: Should this be caught and done earlier?
getAssembler().registerSymbol(*Symbol);
MCELF::SetBinding(*Symbol, ELF::STB_LOCAL);
Symbol->setBinding(ELF::STB_LOCAL);
Symbol->setExternal(false);
BindingExplicitlySet.insert(Symbol);
EmitCommonSymbol(Symbol, Size, ByteAlignment);
@ -463,7 +458,7 @@ void MCELFStreamer::fixSymbolsInTLSFixups(const MCExpr *expr) {
break;
}
getAssembler().registerSymbol(symRef.getSymbol());
MCELF::SetType(symRef.getSymbol(), ELF::STT_TLS);
cast<MCSymbolELF>(symRef.getSymbol()).setType(ELF::STT_TLS);
break;
}

54
lib/MC/MCELF.cpp → lib/MC/MCSymbolELF.cpp
View File

@ -1,4 +1,4 @@
//===- lib/MC/MCELF.cpp - MC ELF ------------------------------------------===//
//===- lib/MC/MCSymbolELF.cpp ---------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
@ -6,65 +6,60 @@
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements ELF object file writer information.
//
//===----------------------------------------------------------------------===//
#include "llvm/MC/MCELF.h"
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCSymbolELF.h"
#include "llvm/MC/MCELFSymbolFlags.h"
#include "llvm/MC/MCFixupKindInfo.h"
#include "llvm/Support/ELF.h"
namespace llvm {
void MCELF::SetBinding(const MCSymbol &Sym, unsigned Binding) {
void MCSymbolELF::setBinding(unsigned Binding) const {
assert(Binding == ELF::STB_LOCAL || Binding == ELF::STB_GLOBAL ||
Binding == ELF::STB_WEAK || Binding == ELF::STB_GNU_UNIQUE);
uint32_t OtherFlags = Sym.getFlags() & ~(0xf << ELF_STB_Shift);
Sym.setFlags(OtherFlags | (Binding << ELF_STB_Shift));
uint32_t OtherFlags = getFlags() & ~(0xf << ELF_STB_Shift);
setFlags(OtherFlags | (Binding << ELF_STB_Shift));
}
unsigned MCELF::GetBinding(const MCSymbol &Sym) {
uint32_t Binding = (Sym.getFlags() & (0xf << ELF_STB_Shift)) >> ELF_STB_Shift;
unsigned MCSymbolELF::getBinding() const {
uint32_t Binding = (getFlags() & (0xf << ELF_STB_Shift)) >> ELF_STB_Shift;
assert(Binding == ELF::STB_LOCAL || Binding == ELF::STB_GLOBAL ||
Binding == ELF::STB_WEAK || Binding == ELF::STB_GNU_UNIQUE);
return Binding;
}
void MCELF::SetType(const MCSymbol &Sym, unsigned Type) {
void MCSymbolELF::setType(unsigned Type) const {
assert(Type == ELF::STT_NOTYPE || Type == ELF::STT_OBJECT ||
Type == ELF::STT_FUNC || Type == ELF::STT_SECTION ||
Type == ELF::STT_COMMON || Type == ELF::STT_TLS ||
Type == ELF::STT_GNU_IFUNC);
uint32_t OtherFlags = Sym.getFlags() & ~(0xf << ELF_STT_Shift);
Sym.setFlags(OtherFlags | (Type << ELF_STT_Shift));
uint32_t OtherFlags = getFlags() & ~(0xf << ELF_STT_Shift);
setFlags(OtherFlags | (Type << ELF_STT_Shift));
}
unsigned MCELF::GetType(const MCSymbol &Sym) {
uint32_t Type = (Sym.getFlags() & (0xf << ELF_STT_Shift)) >> ELF_STT_Shift;
unsigned MCSymbolELF::getType() const {
uint32_t Type = (getFlags() & (0xf << ELF_STT_Shift)) >> ELF_STT_Shift;
assert(Type == ELF::STT_NOTYPE || Type == ELF::STT_OBJECT ||
Type == ELF::STT_FUNC || Type == ELF::STT_SECTION ||
Type == ELF::STT_COMMON || Type == ELF::STT_TLS || Type == ELF::STT_GNU_IFUNC);
Type == ELF::STT_COMMON || Type == ELF::STT_TLS ||
Type == ELF::STT_GNU_IFUNC);
return Type;
}
// Visibility is stored in the first two bits of st_other
// st_other values are stored in the second byte of get/setFlags
void MCELF::SetVisibility(MCSymbol &Sym, unsigned Visibility) {
void MCSymbolELF::setVisibility(unsigned Visibility) {
assert(Visibility == ELF::STV_DEFAULT || Visibility == ELF::STV_INTERNAL ||
Visibility == ELF::STV_HIDDEN || Visibility == ELF::STV_PROTECTED);
uint32_t OtherFlags = Sym.getFlags() & ~(0x3 << ELF_STV_Shift);
Sym.setFlags(OtherFlags | (Visibility << ELF_STV_Shift));
uint32_t OtherFlags = getFlags() & ~(0x3 << ELF_STV_Shift);
setFlags(OtherFlags | (Visibility << ELF_STV_Shift));
}
unsigned MCELF::GetVisibility(const MCSymbol &Sym) {
unsigned Visibility =
(Sym.getFlags() & (0x3 << ELF_STV_Shift)) >> ELF_STV_Shift;
unsigned MCSymbolELF::getVisibility() const {
unsigned Visibility = (getFlags() & (0x3 << ELF_STV_Shift)) >> ELF_STV_Shift;
assert(Visibility == ELF::STV_DEFAULT || Visibility == ELF::STV_INTERNAL ||
Visibility == ELF::STV_HIDDEN || Visibility == ELF::STV_PROTECTED);
return Visibility;
@ -72,14 +67,13 @@ unsigned MCELF::GetVisibility(const MCSymbol &Sym) {
// Other is stored in the last six bits of st_other
// st_other values are stored in the second byte of get/setFlags
void MCELF::setOther(MCSymbol &Sym, unsigned Other) {
uint32_t OtherFlags = Sym.getFlags() & ~(0x3f << ELF_STO_Shift);
Sym.setFlags(OtherFlags | (Other << ELF_STO_Shift));
void MCSymbolELF::setOther(unsigned Other) {
uint32_t OtherFlags = getFlags() & ~(0x3f << ELF_STO_Shift);
setFlags(OtherFlags | (Other << ELF_STO_Shift));
}
unsigned MCELF::getOther(const MCSymbol &Sym) {
unsigned Other = (Sym.getFlags() & (0x3f << ELF_STO_Shift)) >> ELF_STO_Shift;
unsigned MCSymbolELF::getOther() const {
unsigned Other = (getFlags() & (0x3f << ELF_STO_Shift)) >> ELF_STO_Shift;
return Other;
}
}

11
lib/Target/AArch64/MCTargetDesc/AArch64ELFStreamer.cpp
View File

@ -23,7 +23,6 @@
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCCodeEmitter.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCELF.h"
#include "llvm/MC/MCELFStreamer.h"
#include "llvm/MC/MCELFSymbolFlags.h"
#include "llvm/MC/MCExpr.h"
@ -32,7 +31,7 @@
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSectionELF.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCSymbolELF.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ELF.h"
@ -161,12 +160,12 @@ private:
MCSymbol *Start = getContext().createTempSymbol();
EmitLabel(Start);
MCSymbol *Symbol = getContext().getOrCreateSymbol(
Name + "." + Twine(MappingSymbolCounter++));
auto *Symbol = cast<MCSymbolELF>(getContext().getOrCreateSymbol(
Name + "." + Twine(MappingSymbolCounter++)));
getAssembler().registerSymbol(*Symbol);
MCELF::SetType(*Symbol, ELF::STT_NOTYPE);
MCELF::SetBinding(*Symbol, ELF::STB_LOCAL);
Symbol->setType(ELF::STT_NOTYPE);
Symbol->setBinding(ELF::STB_LOCAL);
Symbol->setExternal(false);
auto Sec = getCurrentSection().first;
assert(Sec && "need a section");

5
lib/Target/AArch64/MCTargetDesc/AArch64MCExpr.cpp
View File

@ -15,9 +15,8 @@
#include "AArch64MCExpr.h"
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCELF.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCSymbolELF.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Object/ELF.h"
#include "llvm/Support/ErrorHandling.h"
@ -121,7 +120,7 @@ static void fixELFSymbolsInTLSFixupsImpl(const MCExpr *Expr, MCAssembler &Asm) {
// We're known to be under a TLS fixup, so any symbol should be
// modified. There should be only one.
const MCSymbolRefExpr &SymRef = *cast<MCSymbolRefExpr>(Expr);
MCELF::SetType(SymRef.getSymbol(), ELF::STT_TLS);
cast<MCSymbolELF>(SymRef.getSymbol()).setType(ELF::STT_TLS);
break;
}

14
lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp
View File

@ -22,7 +22,6 @@
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCCodeEmitter.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCELF.h"
#include "llvm/MC/MCELFStreamer.h"
#include "llvm/MC/MCELFSymbolFlags.h"
#include "llvm/MC/MCExpr.h"
@ -34,7 +33,7 @@
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSectionELF.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCSymbolELF.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Support/ARMBuildAttributes.h"
#include "llvm/Support/ARMEHABI.h"
@ -562,13 +561,12 @@ private:
MCSymbol *Start = getContext().createTempSymbol();
EmitLabel(Start);
MCSymbol *Symbol =
getContext().getOrCreateSymbol(Name + "." +
Twine(MappingSymbolCounter++));
auto *Symbol = cast<MCSymbolELF>(getContext().getOrCreateSymbol(
Name + "." + Twine(MappingSymbolCounter++)));
getAssembler().registerSymbol(*Symbol);
MCELF::SetType(*Symbol, ELF::STT_NOTYPE);
MCELF::SetBinding(*Symbol, ELF::STB_LOCAL);
Symbol->setType(ELF::STT_NOTYPE);
Symbol->setBinding(ELF::STB_LOCAL);
Symbol->setExternal(false);
AssignSection(Symbol, getCurrentSection().first);
@ -973,7 +971,7 @@ void ARMTargetELFStreamer::emitLabel(MCSymbol *Symbol) {
return;
Streamer.getOrCreateSymbolData(Symbol);
unsigned Type = MCELF::GetType(*Symbol);
unsigned Type = cast<MCSymbolELF>(Symbol)->getType();
if (Type == ELF_STT_Func || Type == ELF_STT_GnuIFunc)
Streamer.EmitThumbFunc(Symbol);
}

6
lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp
View File

@ -12,10 +12,10 @@
#include "MCTargetDesc/MipsMCTargetDesc.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCELF.h"
#include "llvm/MC/MCELFObjectWriter.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSymbolELF.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Support/ErrorHandling.h"
#include <list>
@ -224,7 +224,7 @@ static unsigned getMatchingLoType(const MCAssembler &Asm,
if (Type == ELF::R_MIPS16_HI16)
return ELF::R_MIPS16_LO16;
if (MCELF::GetBinding(*Reloc.Symbol) != ELF::STB_LOCAL)
if (Reloc.Symbol->getBinding() != ELF::STB_LOCAL)
return ELF::R_MIPS_NONE;
if (Type == ELF::R_MIPS_GOT16)
@ -384,7 +384,7 @@ bool MipsELFObjectWriter::needsRelocateWithSymbol(const MCSymbol &Sym,
return true;
case ELF::R_MIPS_32:
if (MCELF::getOther(Sym) & (ELF::STO_MIPS_MICROMIPS >> 2))
if (cast<MCSymbolELF>(Sym).getOther() & (ELF::STO_MIPS_MICROMIPS >> 2))
return true;
// falltrough
case ELF::R_MIPS_26:

7
lib/Target/Mips/MCTargetDesc/MipsELFStreamer.cpp
View File

@ -9,8 +9,8 @@
#include "MipsELFStreamer.h"
#include "MipsTargetStreamer.h"
#include "llvm/MC/MCELF.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCSymbolELF.h"
#include "llvm/Support/ELF.h"
using namespace llvm;
@ -41,12 +41,13 @@ void MipsELFStreamer::createPendingLabelRelocs() {
// FIXME: Also mark labels when in MIPS16 mode.
if (ELFTargetStreamer->isMicroMipsEnabled()) {
for (auto Label : Labels) {
for (auto *L : Labels) {
auto *Label = cast<MCSymbolELF>(L);
getOrCreateSymbolData(Label);
// The "other" values are stored in the last 6 bits of the second byte.
// The traditional defines for STO values assume the full byte and thus
// the shift to pack it.
MCELF::setOther(*Label, ELF::STO_MIPS_MICROMIPS >> 2);
Label->setOther(ELF::STO_MIPS_MICROMIPS >> 2);
}
}

22
lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
View File

@ -17,10 +17,9 @@
#include "MipsTargetObjectFile.h"
#include "MipsTargetStreamer.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCELF.h"
#include "llvm/MC/MCSectionELF.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCSymbolELF.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ELF.h"
#include "llvm/Support/ErrorHandling.h"
@ -454,18 +453,19 @@ MipsTargetELFStreamer::MipsTargetELFStreamer(MCStreamer &S,
MCA.setELFHeaderEFlags(EFlags);
}
void MipsTargetELFStreamer::emitLabel(MCSymbol *Symbol) {
void MipsTargetELFStreamer::emitLabel(MCSymbol *S) {
auto *Symbol = cast<MCSymbolELF>(S);
if (!isMicroMipsEnabled())
return;
getStreamer().getOrCreateSymbolData(Symbol);
uint8_t Type = MCELF::GetType(*Symbol);
uint8_t Type = Symbol->getType();
if (Type != ELF::STT_FUNC)
return;
// The "other" values are stored in the last 6 bits of the second byte
// The traditional defines for STO values assume the full byte and thus
// the shift to pack it.
MCELF::setOther(*Symbol, ELF::STO_MIPS_MICROMIPS >> 2);
Symbol->setOther(ELF::STO_MIPS_MICROMIPS >> 2);
}
void MipsTargetELFStreamer::finish() {
@ -519,21 +519,21 @@ void MipsTargetELFStreamer::finish() {
emitMipsAbiFlags();
}
void MipsTargetELFStreamer::emitAssignment(MCSymbol *Symbol,
const MCExpr *Value) {
void MipsTargetELFStreamer::emitAssignment(MCSymbol *S, const MCExpr *Value) {
auto *Symbol = cast<MCSymbolELF>(S);
// If on rhs is micromips symbol then mark Symbol as microMips.
if (Value->getKind() != MCExpr::SymbolRef)
return;
const MCSymbol &RhsSym =
static_cast<const MCSymbolRefExpr *>(Value)->getSymbol();
const auto &RhsSym = cast<MCSymbolELF>(
static_cast<const MCSymbolRefExpr *>(Value)->getSymbol());
if (!(MCELF::getOther(RhsSym) & (ELF::STO_MIPS_MICROMIPS >> 2)))
if (!(RhsSym.getOther() & (ELF::STO_MIPS_MICROMIPS >> 2)))
return;
// The "other" values are stored in the last 6 bits of the second byte.
// The traditional defines for STO values assume the full byte and thus
// the shift to pack it.
MCELF::setOther(*Symbol, ELF::STO_MIPS_MICROMIPS >> 2);
Symbol->setOther(ELF::STO_MIPS_MICROMIPS >> 2);
}
MCELFStreamer &MipsTargetELFStreamer::getStreamer() {

3
lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp
View File

@ -24,6 +24,7 @@
#include "llvm/MC/MCParser/MCParsedAsmOperand.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbolELF.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/MC/MCTargetAsmParser.h"
#include "llvm/Support/SourceMgr.h"
@ -1863,7 +1864,7 @@ bool PPCAsmParser::ParseDirectiveLocalEntry(SMLoc L) {
Error(L, "expected identifier in directive");
return false;
}
MCSymbol *Sym = getContext().getOrCreateSymbol(Name);
MCSymbolELF *Sym = cast<MCSymbolELF>(getContext().getOrCreateSymbol(Name));
if (getLexer().isNot(AsmToken::Comma)) {
Error(L, "unexpected token in directive");

16
lib/Target/PowerPC/MCTargetDesc/PPCAsmBackend.cpp
View File

@ -11,12 +11,12 @@
#include "MCTargetDesc/PPCFixupKinds.h"
#include "llvm/MC/MCAsmBackend.h"
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCELF.h"
#include "llvm/MC/MCELFObjectWriter.h"
#include "llvm/MC/MCFixupKindInfo.h"
#include "llvm/MC/MCMachObjectWriter.h"
#include "llvm/MC/MCObjectWriter.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCSymbolELF.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Support/ELF.h"
#include "llvm/Support/ErrorHandling.h"
@ -142,12 +142,14 @@ public:
// to resolve the fixup directly. Emit a relocation and leave
// resolution of the final target address to the linker.
if (const MCSymbolRefExpr *A = Target.getSymA()) {
// The "other" values are stored in the last 6 bits of the second byte.
// The traditional defines for STO values assume the full byte and thus
// the shift to pack it.
unsigned Other = MCELF::getOther(A->getSymbol()) << 2;
if ((Other & ELF::STO_PPC64_LOCAL_MASK) != 0)
IsResolved = false;
if (const auto *S = dyn_cast<MCSymbolELF>(&A->getSymbol())) {
// The "other" values are stored in the last 6 bits of the second
// byte. The traditional defines for STO values assume the full byte
// and thus the shift to pack it.
unsigned Other = S->getOther() << 2;
if ((Other & ELF::STO_PPC64_LOCAL_MASK) != 0)
IsResolved = false;
}
}
break;
}

4
lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp
View File

@ -11,9 +11,9 @@
#include "MCTargetDesc/PPCFixupKinds.h"
#include "MCTargetDesc/PPCMCExpr.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/MC/MCELF.h"
#include "llvm/MC/MCELFObjectWriter.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCSymbolELF.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Support/ErrorHandling.h"
@ -407,7 +407,7 @@ bool PPCELFObjectWriter::needsRelocateWithSymbol(const MCSymbol &Sym,
// The "other" values are stored in the last 6 bits of the second byte.
// The traditional defines for STO values assume the full byte and thus
// the shift to pack it.
unsigned Other = MCELF::getOther(Sym) << 2;
unsigned Other = cast<MCSymbolELF>(Sym).getOther() << 2;
return (Other & ELF::STO_PPC64_LOCAL_MASK) != 0;
}
}

26
lib/Target/PowerPC/MCTargetDesc/PPCMCTargetDesc.cpp
View File

@ -16,14 +16,13 @@
#include "PPCMCAsmInfo.h"
#include "PPCTargetStreamer.h"
#include "llvm/MC/MCCodeGenInfo.h"
#include "llvm/MC/MCELF.h"
#include "llvm/MC/MCELFStreamer.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCSymbolELF.h"
#include "llvm/MC/MachineLocation.h"
#include "llvm/Support/ELF.h"
#include "llvm/Support/ErrorHandling.h"
@ -132,7 +131,7 @@ public:
void emitAbiVersion(int AbiVersion) override {
OS << "\t.abiversion " << AbiVersion << '\n';
}
void emitLocalEntry(MCSymbol *S, const MCExpr *LocalOffset) override {
void emitLocalEntry(MCSymbolELF *S, const MCExpr *LocalOffset) override {
OS << "\t.localentry\t" << *S << ", " << *LocalOffset << '\n';
}
};
@ -159,7 +158,7 @@ public:
Flags |= (AbiVersion & ELF::EF_PPC64_ABI);
MCA.setELFHeaderEFlags(Flags);
}
void emitLocalEntry(MCSymbol *S, const MCExpr *LocalOffset) override {
void emitLocalEntry(MCSymbolELF *S, const MCExpr *LocalOffset) override {
MCAssembler &MCA = getStreamer().getAssembler();
int64_t Res;
@ -173,10 +172,10 @@ public:
// The "other" values are stored in the last 6 bits of the second byte.
// The traditional defines for STO values assume the full byte and thus
// the shift to pack it.
unsigned Other = MCELF::getOther(*S) << 2;
unsigned Other = S->getOther() << 2;
Other &= ~ELF::STO_PPC64_LOCAL_MASK;
Other |= Encoded;
MCELF::setOther(*S, Other >> 2);
S->setOther(Other >> 2);
// For GAS compatibility, unless we already saw a .abiversion directive,
// set e_flags to indicate ELFv2 ABI.
@ -184,20 +183,21 @@ public:
if ((Flags & ELF::EF_PPC64_ABI) == 0)
MCA.setELFHeaderEFlags(Flags | 2);
}
void emitAssignment(MCSymbol *Symbol, const MCExpr *Value) override {
void emitAssignment(MCSymbol *S, const MCExpr *Value) override {
auto *Symbol = cast<MCSymbolELF>(S);
// When encoding an assignment to set symbol A to symbol B, also copy
// the st_other bits encoding the local entry point offset.
if (Value->getKind() != MCExpr::SymbolRef)
return;
const MCSymbol &RhsSym =
static_cast<const MCSymbolRefExpr *>(Value)->getSymbol();
const auto &RhsSym = cast<MCSymbolELF>(
static_cast<const MCSymbolRefExpr *>(Value)->getSymbol());
// The "other" values are stored in the last 6 bits of the second byte.
// The traditional defines for STO values assume the full byte and thus
// the shift to pack it.
unsigned Other = MCELF::getOther(*Symbol) << 2;
unsigned Other = Symbol->getOther() << 2;
Other &= ~ELF::STO_PPC64_LOCAL_MASK;
Other |= (MCELF::getOther(RhsSym) << 2) & ELF::STO_PPC64_LOCAL_MASK;
MCELF::setOther(*Symbol, Other >> 2);
Other |= (RhsSym.getOther() << 2) & ELF::STO_PPC64_LOCAL_MASK;
Symbol->setOther(Other >> 2);
}
};
@ -214,7 +214,7 @@ public:
void emitAbiVersion(int AbiVersion) override {
llvm_unreachable("Unknown pseudo-op: .abiversion");
}
void emitLocalEntry(MCSymbol *S, const MCExpr *LocalOffset) override {
void emitLocalEntry(MCSymbolELF *S, const MCExpr *LocalOffset) override {
llvm_unreachable("Unknown pseudo-op: .localentry");
}
};

4
lib/Target/PowerPC/PPCAsmPrinter.cpp
View File

@ -49,7 +49,7 @@
#include "llvm/MC/MCSectionELF.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCSymbolELF.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ELF.h"
@ -1166,7 +1166,7 @@ void PPCLinuxAsmPrinter::EmitFunctionBodyStart() {
static_cast<PPCTargetStreamer *>(OutStreamer->getTargetStreamer());
if (TS)
TS->emitLocalEntry(CurrentFnSym, LocalOffsetExp);
TS->emitLocalEntry(cast<MCSymbolELF>(CurrentFnSym), LocalOffsetExp);
}
}

2
lib/Target/PowerPC/PPCTargetStreamer.h
View File

@ -20,7 +20,7 @@ public:
virtual void emitTCEntry(const MCSymbol &S) = 0;
virtual void emitMachine(StringRef CPU) = 0;
virtual void emitAbiVersion(int AbiVersion) = 0;
virtual void emitLocalEntry(MCSymbol *S, const MCExpr *LocalOffset) = 0;
virtual void emitLocalEntry(MCSymbolELF *S, const MCExpr *LocalOffset) = 0;
};
}

5
lib/Target/Sparc/MCTargetDesc/SparcMCExpr.cpp
View File

@ -15,9 +15,8 @@
#include "SparcMCExpr.h"
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCELF.h"
#include "llvm/MC/MCObjectStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCSymbolELF.h"
#include "llvm/Object/ELF.h"
@ -184,7 +183,7 @@ static void fixELFSymbolsInTLSFixupsImpl(const MCExpr *Expr, MCAssembler &Asm) {
case MCExpr::SymbolRef: {
const MCSymbolRefExpr &SymRef = *cast<MCSymbolRefExpr>(Expr);
MCELF::SetType(SymRef.getSymbol(), ELF::STT_TLS);
cast<MCSymbolELF>(SymRef.getSymbol()).setType(ELF::STT_TLS);
break;
}