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Introduce new BinaryObject (blob) class, ELF Writer modified to use it. BinaryObject.h by Aaron Gray

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73333 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bruno Cardoso Lopes
2009-06-14 07:53:21 +00:00
parent 956244b337
commit ae9163f0e2
7 changed files with 535 additions and 256 deletions
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299
lib/CodeGen/ELFWriter.cpp
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@ -37,6 +37,7 @@
#include "llvm/Module.h"
#include "llvm/PassManager.h"
#include "llvm/DerivedTypes.h"
#include "llvm/CodeGen/BinaryObject.h"
#include "llvm/CodeGen/FileWriters.h"
#include "llvm/CodeGen/MachineCodeEmitter.h"
#include "llvm/CodeGen/MachineConstantPool.h"
@ -66,22 +67,23 @@ MachineCodeEmitter *llvm::AddELFWriter(PassManagerBase &PM,
//===----------------------------------------------------------------------===//
ELFWriter::ELFWriter(raw_ostream &o, TargetMachine &tm)
: MachineFunctionPass(&ID), O(o), TM(tm), ElfHdr() {
is64Bit = TM.getTargetData()->getPointerSizeInBits() == 64;
isLittleEndian = TM.getTargetData()->isLittleEndian();
: MachineFunctionPass(&ID), O(o), TM(tm),
is64Bit(TM.getTargetData()->getPointerSizeInBits() == 64),
isLittleEndian(TM.getTargetData()->isLittleEndian()),
ElfHdr(isLittleEndian, is64Bit) {
ElfHdr = new ELFHeader(TM.getELFWriterInfo()->getEMachine(), 0,
is64Bit, isLittleEndian);
TAI = TM.getTargetAsmInfo();
TEW = TM.getELFWriterInfo();
// Create the machine code emitter object for this target.
MCE = new ELFCodeEmitter(*this);
// Inital number of sections
NumSections = 0;
}
ELFWriter::~ELFWriter() {
delete MCE;
delete ElfHdr;
}
// doInitialization - Emit the file header and all of the global variables for
@ -89,10 +91,6 @@ ELFWriter::~ELFWriter() {
bool ELFWriter::doInitialization(Module &M) {
Mang = new Mangler(M);
// Local alias to shortenify coming code.
std::vector<unsigned char> &FH = FileHeader;
OutputBuffer FHOut(FH, is64Bit, isLittleEndian);
// ELF Header
// ----------
// Fields e_shnum e_shstrndx are only known after all section have
@ -101,49 +99,48 @@ bool ELFWriter::doInitialization(Module &M) {
//
// Note
// ----
// FHOut.outaddr method behaves differently for ELF32 and ELF64 writing
// emitWord method behaves differently for ELF32 and ELF64, writing
// 4 bytes in the former and 8 in the last for *_off and *_addr elf types
FHOut.outbyte(0x7f); // e_ident[EI_MAG0]
FHOut.outbyte('E'); // e_ident[EI_MAG1]
FHOut.outbyte('L'); // e_ident[EI_MAG2]
FHOut.outbyte('F'); // e_ident[EI_MAG3]
ElfHdr.emitByte(0x7f); // e_ident[EI_MAG0]
ElfHdr.emitByte('E'); // e_ident[EI_MAG1]
ElfHdr.emitByte('L'); // e_ident[EI_MAG2]
ElfHdr.emitByte('F'); // e_ident[EI_MAG3]
FHOut.outbyte(ElfHdr->getElfClass()); // e_ident[EI_CLASS]
FHOut.outbyte(ElfHdr->getByteOrder()); // e_ident[EI_DATA]
FHOut.outbyte(EV_CURRENT); // e_ident[EI_VERSION]
ElfHdr.emitByte(TEW->getEIClass()); // e_ident[EI_CLASS]
ElfHdr.emitByte(TEW->getEIData()); // e_ident[EI_DATA]
ElfHdr.emitByte(EV_CURRENT); // e_ident[EI_VERSION]
ElfHdr.emitAlignment(16); // e_ident[EI_NIDENT-EI_PAD]
FH.resize(16); // e_ident[EI_NIDENT-EI_PAD]
FHOut.outhalf(ET_REL); // e_type
FHOut.outhalf(ElfHdr->getMachine()); // e_machine = target
FHOut.outword(EV_CURRENT); // e_version
FHOut.outaddr(0); // e_entry = 0, no entry point in .o file
FHOut.outaddr(0); // e_phoff = 0, no program header for .o
ELFHdr_e_shoff_Offset = FH.size();
FHOut.outaddr(0); // e_shoff = sec hdr table off in bytes
FHOut.outword(ElfHdr->getFlags()); // e_flags = whatever the target wants
FHOut.outhalf(ElfHdr->getSize()); // e_ehsize = ELF header size
FHOut.outhalf(0); // e_phentsize = prog header entry size
FHOut.outhalf(0); // e_phnum = # prog header entries = 0
ElfHdr.emitWord16(ET_REL); // e_type
ElfHdr.emitWord16(TEW->getEMachine()); // e_machine = target
ElfHdr.emitWord32(EV_CURRENT); // e_version
ElfHdr.emitWord(0); // e_entry, no entry point in .o file
ElfHdr.emitWord(0); // e_phoff, no program header for .o
ELFHdr_e_shoff_Offset = ElfHdr.size();
ElfHdr.emitWord(0); // e_shoff = sec hdr table off in bytes
ElfHdr.emitWord32(TEW->getEFlags()); // e_flags = whatever the target wants
ElfHdr.emitWord16(TEW->getHdrSize()); // e_ehsize = ELF header size
ElfHdr.emitWord16(0); // e_phentsize = prog header entry size
ElfHdr.emitWord16(0); // e_phnum = # prog header entries = 0
// e_shentsize = Section header entry size
FHOut.outhalf(ELFSection::getSectionHdrSize(is64Bit));
ElfHdr.emitWord16(TEW->getSHdrSize());
// e_shnum = # of section header ents
ELFHdr_e_shnum_Offset = FH.size();
FHOut.outhalf(0);
ELFHdr_e_shnum_Offset = ElfHdr.size();
ElfHdr.emitWord16(0); // Placeholder
// e_shstrndx = Section # of '.shstrtab'
ELFHdr_e_shstrndx_Offset = FH.size();
FHOut.outhalf(0);
ELFHdr_e_shstrndx_Offset = ElfHdr.size();
ElfHdr.emitWord16(0); // Placeholder
// Add the null section, which is required to be first in the file.
getSection("", ELFSection::SHT_NULL, 0);
// Start up the symbol table. The first entry in the symtab is the null
// Start up the symbol table. The first entry in the symtab is the null
// entry.
SymbolTable.push_back(ELFSym(0));
SymbolList.push_back(ELFSym(0));
return false;
}
@ -162,7 +159,7 @@ void ELFWriter::EmitGlobal(GlobalVariable *GV) {
ExternalSym.SetBind(ELFSym::STB_GLOBAL);
ExternalSym.SetType(ELFSym::STT_NOTYPE);
ExternalSym.SectionIdx = ELFSection::SHN_UNDEF;
SymbolTable.push_back(ExternalSym);
SymbolList.push_back(ExternalSym);
return;
}
@ -185,7 +182,7 @@ void ELFWriter::EmitGlobal(GlobalVariable *GV) {
CommonSym.SetBind(ELFSym::STB_GLOBAL);
CommonSym.SetType(ELFSym::STT_OBJECT);
CommonSym.SectionIdx = ELFSection::SHN_COMMON;
SymbolTable.push_back(CommonSym);
SymbolList.push_back(CommonSym);
getSection(S->getName(), ELFSection::SHT_NOBITS,
ELFSection::SHF_WRITE | ELFSection::SHF_ALLOC, 1);
return;
@ -222,7 +219,7 @@ void ELFWriter::EmitGlobal(GlobalVariable *GV) {
// Set the idx of the .bss section
BSSSym.SectionIdx = BSSSection.SectionIdx;
if (!GV->hasPrivateLinkage())
SymbolTable.push_back(BSSSym);
SymbolList.push_back(BSSSym);
// Reserve space in the .bss section for this symbol.
BSSSection.Size += Size;
@ -262,21 +259,18 @@ void ELFWriter::EmitGlobal(GlobalVariable *GV) {
if (Align > ElfS.Align)
ElfS.Align = Align;
DataBuffer &GblCstBuf = ElfS.SectionData;
OutputBuffer GblCstTab(GblCstBuf, is64Bit, isLittleEndian);
// S.Value should contain the symbol index inside the section,
// and all symbols should start on their required alignment boundary
GblSym.Value = (GblCstBuf.size() + (Align-1)) & (-Align);
GblCstBuf.insert(GblCstBuf.end(), GblSym.Value-GblCstBuf.size(), 0);
GblSym.Value = (ElfS.size() + (Align-1)) & (-Align);
ElfS.emitAlignment(Align);
// Emit the constant symbol to its section
EmitGlobalConstant(CV, GblCstTab);
SymbolTable.push_back(GblSym);
EmitGlobalConstant(CV, ElfS);
SymbolList.push_back(GblSym);
}
void ELFWriter::EmitGlobalConstantStruct(const ConstantStruct *CVS,
OutputBuffer &GblCstTab) {
ELFSection &GblS) {
// Print the fields in successive locations. Pad to align if needed!
const TargetData *TD = TM.getTargetData();
@ -293,40 +287,40 @@ void ELFWriter::EmitGlobalConstantStruct(const ConstantStruct *CVS,
sizeSoFar += fieldSize + padSize;
// Now print the actual field value.
EmitGlobalConstant(field, GblCstTab);
EmitGlobalConstant(field, GblS);
// Insert padding - this may include padding to increase the size of the
// current field up to the ABI size (if the struct is not packed) as well
// as padding to ensure that the next field starts at the right offset.
for (unsigned p=0; p < padSize; p++)
GblCstTab.outbyte(0);
GblS.emitByte(0);
}
assert(sizeSoFar == cvsLayout->getSizeInBytes() &&
"Layout of constant struct may be incorrect!");
}
void ELFWriter::EmitGlobalConstant(const Constant *CV, OutputBuffer &GblCstTab) {
void ELFWriter::EmitGlobalConstant(const Constant *CV, ELFSection &GblS) {
const TargetData *TD = TM.getTargetData();
unsigned Size = TD->getTypeAllocSize(CV->getType());
if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) {
if (CVA->isString()) {
std::string GblStr = CVA->getAsString();
GblCstTab.outstring(GblStr, GblStr.length());
GblS.emitString(GblStr);
} else { // Not a string. Print the values in successive locations
for (unsigned i = 0, e = CVA->getNumOperands(); i != e; ++i)
EmitGlobalConstant(CVA->getOperand(i), GblCstTab);
EmitGlobalConstant(CVA->getOperand(i), GblS);
}
return;
} else if (const ConstantStruct *CVS = dyn_cast<ConstantStruct>(CV)) {
EmitGlobalConstantStruct(CVS, GblCstTab);
EmitGlobalConstantStruct(CVS, GblS);
return;
} else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
uint64_t Val = CFP->getValueAPF().bitcastToAPInt().getZExtValue();
if (CFP->getType() == Type::DoubleTy)
GblCstTab.outxword(Val);
GblS.emitWord64(Val);
else if (CFP->getType() == Type::FloatTy)
GblCstTab.outword(Val);
GblS.emitWord32(Val);
else if (CFP->getType() == Type::X86_FP80Ty) {
assert(0 && "X86_FP80Ty global emission not implemented");
} else if (CFP->getType() == Type::PPC_FP128Ty)
@ -334,16 +328,16 @@ void ELFWriter::EmitGlobalConstant(const Constant *CV, OutputBuffer &GblCstTab)
return;
} else if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
if (Size == 4)
GblCstTab.outword(CI->getZExtValue());
GblS.emitWord32(CI->getZExtValue());
else if (Size == 8)
GblCstTab.outxword(CI->getZExtValue());
GblS.emitWord64(CI->getZExtValue());
else
assert(0 && "LargeInt global emission not implemented");
return;
} else if (const ConstantVector *CP = dyn_cast<ConstantVector>(CV)) {
const VectorType *PTy = CP->getType();
for (unsigned I = 0, E = PTy->getNumElements(); I < E; ++I)
EmitGlobalConstant(CP->getOperand(I), GblCstTab);
EmitGlobalConstant(CP->getOperand(I), GblS);
return;
}
assert(0 && "unknown global constant");
@ -358,26 +352,30 @@ bool ELFWriter::runOnMachineFunction(MachineFunction &MF) {
/// doFinalization - Now that the module has been completely processed, emit
/// the ELF file to 'O'.
bool ELFWriter::doFinalization(Module &M) {
/// FIXME: This should be removed when moving to BinaryObjects. Since the
/// current ELFCodeEmiter uses CurrBuff, ... it doesn't update S.SectionData
/// FIXME: This should be removed when moving to ObjectCodeEmiter. Since the
/// current ELFCodeEmiter uses CurrBuff, ... it doesn't update S.Data
/// vector size for .text sections, so this is a quick dirty fix
ELFSection &TS = getTextSection();
if (TS.Size)
if (TS.Size) {
BinaryData &BD = TS.getData();
for (unsigned e=0; e<TS.Size; ++e)
TS.SectionData.push_back(TS.SectionData[e]);
BD.push_back(BD[e]);
}
// Get .data and .bss section, they should always be present in the binary
// Emit .data section placeholder
getDataSection();
// Emit .bss section placeholder
getBSSSection();
// build data, bss and "common" sections.
// Build and emit data, bss and "common" sections.
for (Module::global_iterator I = M.global_begin(), E = M.global_end();
I != E; ++I)
EmitGlobal(I);
// Emit non-executable stack note
if (TAI->getNonexecutableStackDirective())
getSection(".note.GNU-stack", ELFSection::SHT_PROGBITS, 0, 1);
getNonExecStackSection();
// Emit the symbol table now, if non-empty.
EmitSymbolTable();
@ -385,10 +383,10 @@ bool ELFWriter::doFinalization(Module &M) {
// Emit the relocation sections.
EmitRelocations();
// Emit the string table for the sections in the ELF file.
// Emit the sections string table.
EmitSectionTableStringTable();
// Emit the sections to the .o file, and emit the section table for the file.
// Dump the sections and section table to the .o file.
OutputSectionsAndSectionTable();
// We are done with the abstract symbols.
@ -404,106 +402,97 @@ bool ELFWriter::doFinalization(Module &M) {
void ELFWriter::EmitRelocations() {
}
/// EmitSymbol - Write symbol 'Sym' to the symbol table 'SymTabOut'
void ELFWriter::EmitSymbol(OutputBuffer &SymTabOut, ELFSym &Sym) {
/// EmitSymbol - Write symbol 'Sym' to the symbol table 'SymbolTable'
void ELFWriter::EmitSymbol(BinaryObject &SymbolTable, ELFSym &Sym) {
if (is64Bit) {
SymTabOut.outword(Sym.NameIdx);
SymTabOut.outbyte(Sym.Info);
SymTabOut.outbyte(Sym.Other);
SymTabOut.outhalf(Sym.SectionIdx);
SymTabOut.outaddr64(Sym.Value);
SymTabOut.outxword(Sym.Size);
SymbolTable.emitWord32(Sym.NameIdx);
SymbolTable.emitByte(Sym.Info);
SymbolTable.emitByte(Sym.Other);
SymbolTable.emitWord16(Sym.SectionIdx);
SymbolTable.emitWord64(Sym.Value);
SymbolTable.emitWord64(Sym.Size);
} else {
SymTabOut.outword(Sym.NameIdx);
SymTabOut.outaddr32(Sym.Value);
SymTabOut.outword(Sym.Size);
SymTabOut.outbyte(Sym.Info);
SymTabOut.outbyte(Sym.Other);
SymTabOut.outhalf(Sym.SectionIdx);
SymbolTable.emitWord32(Sym.NameIdx);
SymbolTable.emitWord32(Sym.Value);
SymbolTable.emitWord32(Sym.Size);
SymbolTable.emitByte(Sym.Info);
SymbolTable.emitByte(Sym.Other);
SymbolTable.emitWord16(Sym.SectionIdx);
}
}
/// EmitSectionHeader - Write section 'Section' header in 'TableOut'
/// EmitSectionHeader - Write section 'Section' header in 'SHdrTab'
/// Section Header Table
void ELFWriter::EmitSectionHeader(OutputBuffer &TableOut, const ELFSection &S) {
TableOut.outword(S.NameIdx);
TableOut.outword(S.Type);
void ELFWriter::EmitSectionHeader(BinaryObject &SHdrTab,
const ELFSection &SHdr) {
SHdrTab.emitWord32(SHdr.NameIdx);
SHdrTab.emitWord32(SHdr.Type);
if (is64Bit) {
TableOut.outxword(S.Flags);
TableOut.outaddr(S.Addr);
TableOut.outaddr(S.Offset);
TableOut.outxword(S.Size);
TableOut.outword(S.Link);
TableOut.outword(S.Info);
TableOut.outxword(S.Align);
TableOut.outxword(S.EntSize);
SHdrTab.emitWord64(SHdr.Flags);
SHdrTab.emitWord(SHdr.Addr);
SHdrTab.emitWord(SHdr.Offset);
SHdrTab.emitWord64(SHdr.Size);
SHdrTab.emitWord32(SHdr.Link);
SHdrTab.emitWord32(SHdr.Info);
SHdrTab.emitWord64(SHdr.Align);
SHdrTab.emitWord64(SHdr.EntSize);
} else {
TableOut.outword(S.Flags);
TableOut.outaddr(S.Addr);
TableOut.outaddr(S.Offset);
TableOut.outword(S.Size);
TableOut.outword(S.Link);
TableOut.outword(S.Info);
TableOut.outword(S.Align);
TableOut.outword(S.EntSize);
SHdrTab.emitWord32(SHdr.Flags);
SHdrTab.emitWord(SHdr.Addr);
SHdrTab.emitWord(SHdr.Offset);
SHdrTab.emitWord32(SHdr.Size);
SHdrTab.emitWord32(SHdr.Link);
SHdrTab.emitWord32(SHdr.Info);
SHdrTab.emitWord32(SHdr.Align);
SHdrTab.emitWord32(SHdr.EntSize);
}
}
/// EmitSymbolTable - If the current symbol table is non-empty, emit the string
/// table for it and then the symbol table itself.
void ELFWriter::EmitSymbolTable() {
if (SymbolTable.size() == 1) return; // Only the null entry.
if (SymbolList.size() == 1) return; // Only the null entry.
// FIXME: compact all local symbols to the start of the symtab.
unsigned FirstNonLocalSymbol = 1;
ELFSection &StrTab = getStringTableSection();
DataBuffer &StrTabBuf = StrTab.SectionData;
OutputBuffer StrTabOut(StrTabBuf, is64Bit, isLittleEndian);
// Set the zero'th symbol to a null byte, as required.
StrTabOut.outbyte(0);
StrTab.emitByte(0);
unsigned Index = 1;
for (unsigned i = 1, e = SymbolTable.size(); i != e; ++i) {
for (unsigned i = 1, e = SymbolList.size(); i != e; ++i) {
// Use the name mangler to uniquify the LLVM symbol.
std::string Name = Mang->getValueName(SymbolTable[i].GV);
std::string Name = Mang->getValueName(SymbolList[i].GV);
if (Name.empty()) {
SymbolTable[i].NameIdx = 0;
SymbolList[i].NameIdx = 0;
} else {
SymbolTable[i].NameIdx = Index;
// Add the name to the output buffer, including the null terminator.
StrTabBuf.insert(StrTabBuf.end(), Name.begin(), Name.end());
// Add a null terminator.
StrTabBuf.push_back(0);
SymbolList[i].NameIdx = Index;
StrTab.emitString(Name);
// Keep track of the number of bytes emitted to this section.
Index += Name.size()+1;
}
}
assert(Index == StrTabBuf.size());
assert(Index == StrTab.size());
StrTab.Size = Index;
// Now that we have emitted the string table and know the offset into the
// string table of each symbol, emit the symbol table itself.
ELFSection &SymTab = getSymbolTableSection();
SymTab.Align = is64Bit ? 8 : 4;
SymTab.Link = StrTab.SectionIdx; // Section Index of .strtab.
SymTab.Info = FirstNonLocalSymbol; // First non-STB_LOCAL symbol.
SymTab.Align = TEW->getSymTabAlignment();
SymTab.Link = StrTab.SectionIdx; // Section Index of .strtab.
SymTab.Info = FirstNonLocalSymbol; // First non-STB_LOCAL symbol.
// Size of each symtab entry.
SymTab.EntSize = ELFSym::getEntrySize(is64Bit);
SymTab.EntSize = TEW->getSymTabEntrySize();
DataBuffer &SymTabBuf = SymTab.SectionData;
OutputBuffer SymTabOut(SymTabBuf, is64Bit, isLittleEndian);
for (unsigned i = 0, e = SymbolList.size(); i != e; ++i)
EmitSymbol(SymTab, SymbolList[i]);
for (unsigned i = 0, e = SymbolTable.size(); i != e; ++i)
EmitSymbol(SymTabOut, SymbolTable[i]);
SymTab.Size = SymTabBuf.size();
SymTab.Size = SymTab.size();
}
/// EmitSectionTableStringTable - This method adds and emits a section for the
@ -515,32 +504,25 @@ void ELFWriter::EmitSectionTableStringTable() {
// Now that we know which section number is the .shstrtab section, update the
// e_shstrndx entry in the ELF header.
OutputBuffer FHOut(FileHeader, is64Bit, isLittleEndian);
FHOut.fixhalf(SHStrTab.SectionIdx, ELFHdr_e_shstrndx_Offset);
ElfHdr.fixWord16(SHStrTab.SectionIdx, ELFHdr_e_shstrndx_Offset);
// Set the NameIdx of each section in the string table and emit the bytes for
// the string table.
unsigned Index = 0;
DataBuffer &Buf = SHStrTab.SectionData;
for (std::list<ELFSection>::iterator I = SectionList.begin(),
E = SectionList.end(); I != E; ++I) {
// Set the index into the table. Note if we have lots of entries with
// common suffixes, we could memoize them here if we cared.
I->NameIdx = Index;
// Add the name to the output buffer, including the null terminator.
Buf.insert(Buf.end(), I->Name.begin(), I->Name.end());
// Add a null terminator.
Buf.push_back(0);
SHStrTab.emitString(I->getName());
// Keep track of the number of bytes emitted to this section.
Index += I->Name.size()+1;
Index += I->getName().size()+1;
}
// Set the size of .shstrtab now that we know what it is.
assert(Index == Buf.size());
assert(Index == SHStrTab.size());
SHStrTab.Size = Index;
}
@ -549,7 +531,7 @@ void ELFWriter::EmitSectionTableStringTable() {
/// SectionTable.
void ELFWriter::OutputSectionsAndSectionTable() {
// Pass #1: Compute the file offset for each section.
size_t FileOff = FileHeader.size(); // File header first.
size_t FileOff = ElfHdr.size(); // File header first.
// Adjust alignment of all section if needed.
for (std::list<ELFSection>::iterator I = SectionList.begin(),
@ -559,14 +541,14 @@ void ELFWriter::OutputSectionsAndSectionTable() {
if (!I->SectionIdx)
continue;
if (!I->SectionData.size()) {
if (!I->size()) {
I->Offset = FileOff;
continue;
}
// Update Section size
if (!I->Size)
I->Size = I->SectionData.size();
I->Size = I->size();
// Align FileOff to whatever the alignment restrictions of the section are.
if (I->Align)
@ -582,43 +564,40 @@ void ELFWriter::OutputSectionsAndSectionTable() {
// Now that we know where all of the sections will be emitted, set the e_shnum
// entry in the ELF header.
OutputBuffer FHOut(FileHeader, is64Bit, isLittleEndian);
FHOut.fixhalf(NumSections, ELFHdr_e_shnum_Offset);
ElfHdr.fixWord16(NumSections, ELFHdr_e_shnum_Offset);
// Now that we know the offset in the file of the section table, update the
// e_shoff address in the ELF header.
FHOut.fixaddr(FileOff, ELFHdr_e_shoff_Offset);
ElfHdr.fixWord(FileOff, ELFHdr_e_shoff_Offset);
// Now that we know all of the data in the file header, emit it and all of the
// sections!
O.write((char*)&FileHeader[0], FileHeader.size());
FileOff = FileHeader.size();
DataBuffer().swap(FileHeader);
O.write((char *)&ElfHdr.getData()[0], ElfHdr.size());
FileOff = ElfHdr.size();
DataBuffer Table;
OutputBuffer TableOut(Table, is64Bit, isLittleEndian);
// Section Header Table blob
BinaryObject SHdrTable(isLittleEndian, is64Bit);
// Emit all of the section data and build the section table itself.
// Emit all of sections to the file and build the section header table.
while (!SectionList.empty()) {
const ELFSection &S = *SectionList.begin();
DOUT << "SectionIdx: " << S.SectionIdx << ", Name: " << S.Name
ELFSection &S = *SectionList.begin();
DOUT << "SectionIdx: " << S.SectionIdx << ", Name: " << S.getName()
<< ", Size: " << S.Size << ", Offset: " << S.Offset
<< ", SectionData Size: " << S.SectionData.size() << "\n";
<< ", SectionData Size: " << S.size() << "\n";
// Align FileOff to whatever the alignment restrictions of the section are.
if (S.Align) {
for (size_t NewFileOff = (FileOff+S.Align-1) & ~(S.Align-1);
FileOff != NewFileOff; ++FileOff)
FileOff != NewFileOff; ++FileOff)
O << (char)0xAB;
}
if (S.SectionData.size()) {
O.write((char*)&S.SectionData[0], S.Size);
if (S.size()) {
O.write((char *)&S.getData()[0], S.Size);
FileOff += S.Size;
}
EmitSectionHeader(TableOut, S);
EmitSectionHeader(SHdrTable, S);
SectionList.pop_front();
}
@ -628,5 +607,5 @@ void ELFWriter::OutputSectionsAndSectionTable() {
O << (char)0xAB;
// Emit the section table itself.
O.write((char*)&Table[0], Table.size());
O.write((char *)&SHdrTable.getData()[0], SHdrTable.size());
}