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