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Handle null and file symbol on doInitialization
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77354 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -36,7 +36,7 @@ namespace llvm {
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/// startFunction - This callback is invoked when a new machine function is
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/// about to be emitted.
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void ELFCodeEmitter::startFunction(MachineFunction &MF) {
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DEBUG(errs() << "processing function: "
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DEBUG(errs() << "processing function: "
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<< MF.getFunction()->getName() << "\n");
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// Get the ELF Section that this function belongs in.
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@ -143,6 +143,11 @@ bool ELFWriter::doInitialization(Module &M) {
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// Add the null section, which is required to be first in the file.
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getNullSection();
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// The first entry in the symtab is the null symbol and the second
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// is a local symbol containing the module/file name
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SymbolList.push_back(new ELFSym());
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SymbolList.push_back(ELFSym::getFileSym());
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return false;
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}
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@ -189,7 +194,7 @@ ELFSection &ELFWriter::getConstantPoolSection(MachineConstantPoolEntry &CPE) {
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const TargetLoweringObjectFile &TLOF =
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TM.getTargetLowering()->getObjFileLowering();
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return getSection(TLOF.getSectionForMergeableConstant(Kind)->getName(),
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ELFSection::SHT_PROGBITS,
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ELFSection::SHF_MERGE | ELFSection::SHF_ALLOC,
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@ -320,7 +325,7 @@ void ELFWriter::EmitGlobal(const GlobalValue *GV) {
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const TargetLoweringObjectFile &TLOF =
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TM.getTargetLowering()->getObjFileLowering();
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// Get ELF section from TAI
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// Get the ELF section where this global belongs from TLOF
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const Section *S = TLOF.SectionForGlobal(GV, TM);
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unsigned SectionFlags = getElfSectionFlags(S->getKind());
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@ -522,9 +527,6 @@ bool ELFWriter::doFinalization(Module &M) {
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if (TAI->getNonexecutableStackDirective())
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getNonExecStackSection();
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// Emit module name
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SymbolList.push_back(ELFSym::getFileSym());
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// Emit a symbol for each section created until now, skip null section
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for (unsigned i = 1, e = SectionList.size(); i < e; ++i) {
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ELFSection &ES = *SectionList[i];
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@ -798,9 +800,6 @@ void ELFWriter::EmitSymbolTable() {
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// Size of each symtab entry.
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SymTab.EntSize = TEW->getSymTabEntrySize();
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// The first entry in the symtab is the null symbol
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SymbolList.insert(SymbolList.begin(), new ELFSym());
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// Reorder the symbol table with local symbols first!
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unsigned FirstNonLocalSymbol = SortSymbols();
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