Split MCEELFStreamer and ELFObjectWriter into .h and .cpp files, so that other components can use them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126942 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/ELFObjectWriter.cpp b/lib/MC/ELFObjectWriter.cpp
index 7488b1b..3492cbc 100644
--- a/lib/MC/ELFObjectWriter.cpp
+++ b/lib/MC/ELFObjectWriter.cpp
@@ -11,21 +11,14 @@
//
//===----------------------------------------------------------------------===//
-#include "MCELF.h"
-#include "llvm/ADT/OwningPtr.h"
-#include "llvm/ADT/SmallPtrSet.h"
+#include "ELFObjectWriter.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/Twine.h"
-#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCAsmLayout.h"
#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCELFSymbolFlags.h"
#include "llvm/MC/MCExpr.h"
-#include "llvm/MC/MCELFObjectWriter.h"
-#include "llvm/MC/MCObjectWriter.h"
#include "llvm/MC/MCSectionELF.h"
-#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
@@ -39,361 +32,6 @@
#include <vector>
using namespace llvm;
-namespace {
- class ELFObjectWriter : public MCObjectWriter {
- protected:
-
- static bool isFixupKindPCRel(const MCAssembler &Asm, unsigned Kind);
- static bool RelocNeedsGOT(MCSymbolRefExpr::VariantKind Variant);
- static uint64_t SymbolValue(MCSymbolData &Data, const MCAsmLayout &Layout);
- static bool isInSymtab(const MCAssembler &Asm, const MCSymbolData &Data,
- bool Used, bool Renamed);
- static bool isLocal(const MCSymbolData &Data, bool isSignature,
- bool isUsedInReloc);
- static bool IsELFMetaDataSection(const MCSectionData &SD);
- static uint64_t DataSectionSize(const MCSectionData &SD);
- static uint64_t GetSectionFileSize(const MCAsmLayout &Layout,
- const MCSectionData &SD);
- static uint64_t GetSectionAddressSize(const MCAsmLayout &Layout,
- const MCSectionData &SD);
- static void WriteDataSectionData(ELFObjectWriter *W,
- const MCSectionData &SD);
-
- /*static bool isFixupKindX86RIPRel(unsigned Kind) {
- return Kind == X86::reloc_riprel_4byte ||
- Kind == X86::reloc_riprel_4byte_movq_load;
- }*/
-
- /// ELFSymbolData - Helper struct for containing some precomputed
- /// information on symbols.
- struct ELFSymbolData {
- MCSymbolData *SymbolData;
- uint64_t StringIndex;
- uint32_t SectionIndex;
-
- // Support lexicographic sorting.
- bool operator<(const ELFSymbolData &RHS) const {
- if (MCELF::GetType(*SymbolData) == ELF::STT_FILE)
- return true;
- if (MCELF::GetType(*RHS.SymbolData) == ELF::STT_FILE)
- return false;
- return SymbolData->getSymbol().getName() <
- RHS.SymbolData->getSymbol().getName();
- }
- };
-
- /// @name Relocation Data
- /// @{
-
- struct ELFRelocationEntry {
- // Make these big enough for both 32-bit and 64-bit
- uint64_t r_offset;
- int Index;
- unsigned Type;
- const MCSymbol *Symbol;
- uint64_t r_addend;
-
- ELFRelocationEntry()
- : r_offset(0), Index(0), Type(0), Symbol(0), r_addend(0) {}
-
- ELFRelocationEntry(uint64_t RelocOffset, int Idx,
- unsigned RelType, const MCSymbol *Sym,
- uint64_t Addend)
- : r_offset(RelocOffset), Index(Idx), Type(RelType),
- Symbol(Sym), r_addend(Addend) {}
-
- // Support lexicographic sorting.
- bool operator<(const ELFRelocationEntry &RE) const {
- return RE.r_offset < r_offset;
- }
- };
-
- /// The target specific ELF writer instance.
- llvm::OwningPtr<MCELFObjectTargetWriter> TargetObjectWriter;
-
- SmallPtrSet<const MCSymbol *, 16> UsedInReloc;
- SmallPtrSet<const MCSymbol *, 16> WeakrefUsedInReloc;
- DenseMap<const MCSymbol *, const MCSymbol *> Renames;
-
- llvm::DenseMap<const MCSectionData*,
- std::vector<ELFRelocationEntry> > Relocations;
- DenseMap<const MCSection*, uint64_t> SectionStringTableIndex;
-
- /// @}
- /// @name Symbol Table Data
- /// @{
-
- SmallString<256> StringTable;
- std::vector<ELFSymbolData> LocalSymbolData;
- std::vector<ELFSymbolData> ExternalSymbolData;
- std::vector<ELFSymbolData> UndefinedSymbolData;
-
- /// @}
-
- bool NeedsGOT;
-
- bool NeedsSymtabShndx;
-
- // This holds the symbol table index of the last local symbol.
- unsigned LastLocalSymbolIndex;
- // This holds the .strtab section index.
- unsigned StringTableIndex;
- // This holds the .symtab section index.
- unsigned SymbolTableIndex;
-
- unsigned ShstrtabIndex;
-
-
- const MCSymbol *SymbolToReloc(const MCAssembler &Asm,
- const MCValue &Target,
- const MCFragment &F) const;
-
- // For arch-specific emission of explicit reloc symbol
- virtual const MCSymbol *ExplicitRelSym(const MCAssembler &Asm,
- const MCValue &Target,
- const MCFragment &F,
- bool IsBSS) const {
- return NULL;
- }
-
- bool is64Bit() const { return TargetObjectWriter->is64Bit(); }
- bool hasRelocationAddend() const {
- return TargetObjectWriter->hasRelocationAddend();
- }
-
- public:
- ELFObjectWriter(MCELFObjectTargetWriter *MOTW,
- raw_ostream &_OS, bool IsLittleEndian)
- : MCObjectWriter(_OS, IsLittleEndian),
- TargetObjectWriter(MOTW),
- NeedsGOT(false), NeedsSymtabShndx(false){
- }
-
- virtual ~ELFObjectWriter();
-
- void WriteWord(uint64_t W) {
- if (is64Bit())
- Write64(W);
- else
- Write32(W);
- }
-
- void StringLE16(char *buf, uint16_t Value) {
- buf[0] = char(Value >> 0);
- buf[1] = char(Value >> 8);
- }
-
- void StringLE32(char *buf, uint32_t Value) {
- StringLE16(buf, uint16_t(Value >> 0));
- StringLE16(buf + 2, uint16_t(Value >> 16));
- }
-
- void StringLE64(char *buf, uint64_t Value) {
- StringLE32(buf, uint32_t(Value >> 0));
- StringLE32(buf + 4, uint32_t(Value >> 32));
- }
-
- void StringBE16(char *buf ,uint16_t Value) {
- buf[0] = char(Value >> 8);
- buf[1] = char(Value >> 0);
- }
-
- void StringBE32(char *buf, uint32_t Value) {
- StringBE16(buf, uint16_t(Value >> 16));
- StringBE16(buf + 2, uint16_t(Value >> 0));
- }
-
- void StringBE64(char *buf, uint64_t Value) {
- StringBE32(buf, uint32_t(Value >> 32));
- StringBE32(buf + 4, uint32_t(Value >> 0));
- }
-
- void String8(MCDataFragment &F, uint8_t Value) {
- char buf[1];
- buf[0] = Value;
- F.getContents() += StringRef(buf, 1);
- }
-
- void String16(MCDataFragment &F, uint16_t Value) {
- char buf[2];
- if (isLittleEndian())
- StringLE16(buf, Value);
- else
- StringBE16(buf, Value);
- F.getContents() += StringRef(buf, 2);
- }
-
- void String32(MCDataFragment &F, uint32_t Value) {
- char buf[4];
- if (isLittleEndian())
- StringLE32(buf, Value);
- else
- StringBE32(buf, Value);
- F.getContents() += StringRef(buf, 4);
- }
-
- void String64(MCDataFragment &F, uint64_t Value) {
- char buf[8];
- if (isLittleEndian())
- StringLE64(buf, Value);
- else
- StringBE64(buf, Value);
- F.getContents() += StringRef(buf, 8);
- }
-
- virtual void WriteHeader(uint64_t SectionDataSize, unsigned NumberOfSections);
-
- /// Default e_flags = 0
- virtual void WriteEFlags() { Write32(0); }
-
- virtual void WriteSymbolEntry(MCDataFragment *SymtabF, MCDataFragment *ShndxF,
- uint64_t name, uint8_t info,
- uint64_t value, uint64_t size,
- uint8_t other, uint32_t shndx,
- bool Reserved);
-
- virtual void WriteSymbol(MCDataFragment *SymtabF, MCDataFragment *ShndxF,
- ELFSymbolData &MSD,
- const MCAsmLayout &Layout);
-
- typedef DenseMap<const MCSectionELF*, uint32_t> SectionIndexMapTy;
- virtual void WriteSymbolTable(MCDataFragment *SymtabF, MCDataFragment *ShndxF,
- const MCAssembler &Asm,
- const MCAsmLayout &Layout,
- const SectionIndexMapTy &SectionIndexMap);
-
- virtual void RecordRelocation(const MCAssembler &Asm, const MCAsmLayout &Layout,
- const MCFragment *Fragment, const MCFixup &Fixup,
- MCValue Target, uint64_t &FixedValue);
-
- virtual uint64_t getSymbolIndexInSymbolTable(const MCAssembler &Asm,
- const MCSymbol *S);
-
- // Map from a group section to the signature symbol
- typedef DenseMap<const MCSectionELF*, const MCSymbol*> GroupMapTy;
- // Map from a signature symbol to the group section
- typedef DenseMap<const MCSymbol*, const MCSectionELF*> RevGroupMapTy;
-
- /// ComputeSymbolTable - Compute the symbol table data
- ///
- /// \param StringTable [out] - The string table data.
- /// \param StringIndexMap [out] - Map from symbol names to offsets in the
- /// string table.
- virtual void ComputeSymbolTable(MCAssembler &Asm,
- const SectionIndexMapTy &SectionIndexMap,
- RevGroupMapTy RevGroupMap);
-
- virtual void ComputeIndexMap(MCAssembler &Asm,
- SectionIndexMapTy &SectionIndexMap);
-
- virtual void WriteRelocation(MCAssembler &Asm, MCAsmLayout &Layout,
- const MCSectionData &SD);
-
- virtual void WriteRelocations(MCAssembler &Asm, MCAsmLayout &Layout) {
- for (MCAssembler::const_iterator it = Asm.begin(),
- ie = Asm.end(); it != ie; ++it) {
- WriteRelocation(Asm, Layout, *it);
- }
- }
-
- virtual void CreateMetadataSections(MCAssembler &Asm, MCAsmLayout &Layout,
- const SectionIndexMapTy &SectionIndexMap);
-
- // Create the sections that show up in the symbol table. Currently
- // those are the .note.GNU-stack section and the group sections.
- virtual void CreateIndexedSections(MCAssembler &Asm, MCAsmLayout &Layout,
- GroupMapTy &GroupMap,
- RevGroupMapTy &RevGroupMap);
-
- virtual void ExecutePostLayoutBinding(MCAssembler &Asm,
- const MCAsmLayout &Layout);
-
- virtual void WriteSecHdrEntry(uint32_t Name, uint32_t Type, uint64_t Flags,
- uint64_t Address, uint64_t Offset,
- uint64_t Size, uint32_t Link, uint32_t Info,
- uint64_t Alignment, uint64_t EntrySize);
-
- virtual void WriteRelocationsFragment(const MCAssembler &Asm,
- MCDataFragment *F,
- const MCSectionData *SD);
-
- virtual bool
- IsSymbolRefDifferenceFullyResolvedImpl(const MCAssembler &Asm,
- const MCSymbolData &DataA,
- const MCFragment &FB,
- bool InSet,
- bool IsPCRel) const;
-
- virtual void WriteObject(MCAssembler &Asm, const MCAsmLayout &Layout);
- virtual void WriteSection(MCAssembler &Asm,
- const SectionIndexMapTy &SectionIndexMap,
- uint32_t GroupSymbolIndex,
- uint64_t Offset, uint64_t Size, uint64_t Alignment,
- const MCSectionELF &Section);
-
- protected:
- virtual unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
- bool IsPCRel, bool IsRelocWithSymbol,
- int64_t Addend) = 0;
- };
-
- //===- X86ELFObjectWriter -------------------------------------------===//
-
- class X86ELFObjectWriter : public ELFObjectWriter {
- public:
- X86ELFObjectWriter(MCELFObjectTargetWriter *MOTW,
- raw_ostream &_OS,
- bool IsLittleEndian);
-
- virtual ~X86ELFObjectWriter();
- protected:
- virtual unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
- bool IsPCRel, bool IsRelocWithSymbol,
- int64_t Addend);
- };
-
-
- //===- ARMELFObjectWriter -------------------------------------------===//
-
- class ARMELFObjectWriter : public ELFObjectWriter {
- public:
- // FIXME: MCAssembler can't yet return the Subtarget,
- enum { DefaultEABIVersion = 0x05000000U };
-
- ARMELFObjectWriter(MCELFObjectTargetWriter *MOTW,
- raw_ostream &_OS,
- bool IsLittleEndian);
-
- virtual ~ARMELFObjectWriter();
-
- virtual void WriteEFlags();
- protected:
- virtual const MCSymbol *ExplicitRelSym(const MCAssembler &Asm,
- const MCValue &Target,
- const MCFragment &F,
- bool IsBSS) const;
-
- virtual unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
- bool IsPCRel, bool IsRelocWithSymbol,
- int64_t Addend);
- };
-
- //===- MBlazeELFObjectWriter -------------------------------------------===//
-
- class MBlazeELFObjectWriter : public ELFObjectWriter {
- public:
- MBlazeELFObjectWriter(MCELFObjectTargetWriter *MOTW,
- raw_ostream &_OS,
- bool IsLittleEndian);
-
- virtual ~MBlazeELFObjectWriter();
- protected:
- virtual unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
- bool IsPCRel, bool IsRelocWithSymbol,
- int64_t Addend);
- };
-}
-
bool ELFObjectWriter::isFixupKindPCRel(const MCAssembler &Asm, unsigned Kind) {
const MCFixupKindInfo &FKI =
Asm.getBackend().getFixupKindInfo((MCFixupKind) Kind);