115 lines
3.9 KiB
C++
115 lines
3.9 KiB
C++
//===- MapFile.cpp --------------------------------------------------------===//
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//
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// The LLVM Linker
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the /lldmap option. It shows lists in order and
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// hierarchically the output sections, input sections, input files and
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// symbol:
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//
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// Address Size Align Out In File Symbol
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// =================================================================
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// 00201000 00000015 4 .text
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// 00201000 0000000e 4 .text
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// 00201000 0000000e 4 test.o
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// 0020100e 00000000 0 local
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// 00201005 00000000 0 f(int)
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//
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//===----------------------------------------------------------------------===//
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#include "MapFile.h"
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#include "Error.h"
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#include "Symbols.h"
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#include "Writer.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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using namespace llvm::object;
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using namespace lld;
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using namespace lld::coff;
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static void writeOutSecLine(raw_fd_ostream &OS, uint64_t Address, uint64_t Size,
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uint64_t Align, StringRef Name) {
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OS << format("%08llx %08llx %5lld ", Address, Size, Align)
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<< left_justify(Name, 7);
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}
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static void writeInSecLine(raw_fd_ostream &OS, uint64_t Address, uint64_t Size,
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uint64_t Align, StringRef Name) {
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// Pass an empty name to align the text to the correct column.
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writeOutSecLine(OS, Address, Size, Align, "");
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OS << ' ' << left_justify(Name, 7);
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}
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static void writeFileLine(raw_fd_ostream &OS, uint64_t Address, uint64_t Size,
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uint64_t Align, StringRef Name) {
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// Pass an empty name to align the text to the correct column.
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writeInSecLine(OS, Address, Size, Align, "");
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OS << ' ' << left_justify(Name, 7);
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}
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static void writeSymbolLine(raw_fd_ostream &OS, uint64_t Address, uint64_t Size,
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StringRef Name) {
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// Pass an empty name to align the text to the correct column.
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writeFileLine(OS, Address, Size, 0, "");
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OS << ' ' << left_justify(Name, 7);
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}
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static void writeSectionChunk(raw_fd_ostream &OS, const SectionChunk *SC,
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StringRef &PrevName) {
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StringRef Name = SC->getSectionName();
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if (Name != PrevName) {
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writeInSecLine(OS, SC->getRVA(), SC->getSize(), SC->getAlign(), Name);
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OS << '\n';
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PrevName = Name;
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}
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coff::ObjectFile *File = SC->File;
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if (!File)
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return;
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writeFileLine(OS, SC->getRVA(), SC->getSize(), SC->getAlign(),
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toString(File));
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OS << '\n';
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ArrayRef<SymbolBody *> Syms = File->getSymbols();
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for (SymbolBody *Sym : Syms) {
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auto *DR = dyn_cast<DefinedRegular>(Sym);
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if (!DR || DR->getChunk() != SC ||
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DR->getCOFFSymbol().isSectionDefinition())
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continue;
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writeSymbolLine(OS, DR->getRVA(), SC->getSize(), toString(*Sym));
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OS << '\n';
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}
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}
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static void writeMapFile2(raw_fd_ostream &OS,
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ArrayRef<OutputSection *> OutputSections) {
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OS << "Address Size Align Out In File Symbol\n";
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for (OutputSection *Sec : OutputSections) {
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uint32_t VA = Sec->getRVA();
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writeOutSecLine(OS, VA, Sec->getVirtualSize(), /*Align=*/PageSize,
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Sec->getName());
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OS << '\n';
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StringRef PrevName = "";
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for (Chunk *C : Sec->getChunks())
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if (const auto *SC = dyn_cast<SectionChunk>(C))
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writeSectionChunk(OS, SC, PrevName);
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}
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}
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void coff::writeMapFile(ArrayRef<OutputSection *> OutputSections) {
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if (Config->MapFile.empty())
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return;
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std::error_code EC;
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raw_fd_ostream OS(Config->MapFile, EC, sys::fs::F_None);
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if (EC)
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fatal("cannot open " + Config->MapFile + ": " + EC.message());
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writeMapFile2(OS, OutputSections);
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}
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