// Sort .pdata section contents according to PE/COFF spec 5.5. void Writer::sortExceptionTable() { OutputSection *Sec = findSection(".pdata"); if (!Sec) return; // We assume .pdata contains function table entries only. uint8_t *Begin = Buffer->getBufferStart() + Sec->getFileOff(); uint8_t *End = Begin + Sec->getVirtualSize(); if (Config->Machine == AMD64) { struct Entry { ulittle32_t Begin, End, Unwind; }; sort(parallel::par, (Entry *)Begin, (Entry *)End, [](const Entry &A, const Entry &B) { return A.Begin < B.Begin; }); return; } if (Config->Machine == ARMNT) { struct Entry { ulittle32_t Begin, Unwind; }; sort(parallel::par, (Entry *)Begin, (Entry *)End, [](const Entry &A, const Entry &B) { return A.Begin < B.Begin; }); return; } errs() << "warning: don't know how to handle .pdata.\n"; }
void Writer::createSymbolAndStringTable() { if (!Config->Debug || !Config->WriteSymtab) return; // Name field in the section table is 8 byte long. Longer names need // to be written to the string table. First, construct string table. for (OutputSection *Sec : OutputSections) { StringRef Name = Sec->getName(); if (Name.size() <= COFF::NameSize) continue; Sec->setStringTableOff(addEntryToStringTable(Name)); } for (lld::coff::ObjectFile *File : Symtab->ObjectFiles) { for (SymbolBody *B : File->getSymbols()) { auto *D = dyn_cast<Defined>(B); if (!D || D->WrittenToSymtab) continue; D->WrittenToSymtab = true; if (Optional<coff_symbol16> Sym = createSymbol(D)) OutputSymtab.push_back(*Sym); } } OutputSection *LastSection = OutputSections.back(); // We position the symbol table to be adjacent to the end of the last section. uint64_t FileOff = LastSection->getFileOff() + alignTo(LastSection->getRawSize(), SectorSize); if (!OutputSymtab.empty()) { PointerToSymbolTable = FileOff; FileOff += OutputSymtab.size() * sizeof(coff_symbol16); } if (!Strtab.empty()) FileOff += Strtab.size() + 4; FileSize = alignTo(FileOff, SectorSize); }