2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
125 lines
4.1 KiB
C++
125 lines
4.1 KiB
C++
//===- MapFile.cpp --------------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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 File Symbol
|
|
// 00201000 00000015 4 .text
|
|
// 00201000 0000000e 4 test.o:(.text)
|
|
// 0020100e 00000000 0 local
|
|
// 00201005 00000000 0 f(int)
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "MapFile.h"
|
|
#include "SymbolTable.h"
|
|
#include "Symbols.h"
|
|
#include "Writer.h"
|
|
#include "lld/Common/ErrorHandler.h"
|
|
#include "llvm/Support/Parallel.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
|
|
using namespace llvm;
|
|
using namespace llvm::object;
|
|
|
|
using namespace lld;
|
|
using namespace lld::coff;
|
|
|
|
typedef DenseMap<const SectionChunk *, SmallVector<DefinedRegular *, 4>>
|
|
SymbolMapTy;
|
|
|
|
static const std::string Indent8 = " "; // 8 spaces
|
|
static const std::string Indent16 = " "; // 16 spaces
|
|
|
|
// Print out the first three columns of a line.
|
|
static void writeHeader(raw_ostream &OS, uint64_t Addr, uint64_t Size,
|
|
uint64_t Align) {
|
|
OS << format("%08llx %08llx %5lld ", Addr, Size, Align);
|
|
}
|
|
|
|
// Returns a list of all symbols that we want to print out.
|
|
static std::vector<DefinedRegular *> getSymbols() {
|
|
std::vector<DefinedRegular *> V;
|
|
for (ObjFile *File : ObjFile::Instances)
|
|
for (Symbol *B : File->getSymbols())
|
|
if (auto *Sym = dyn_cast_or_null<DefinedRegular>(B))
|
|
if (Sym && !Sym->getCOFFSymbol().isSectionDefinition())
|
|
V.push_back(Sym);
|
|
return V;
|
|
}
|
|
|
|
// Returns a map from sections to their symbols.
|
|
static SymbolMapTy getSectionSyms(ArrayRef<DefinedRegular *> Syms) {
|
|
SymbolMapTy Ret;
|
|
for (DefinedRegular *S : Syms)
|
|
Ret[S->getChunk()].push_back(S);
|
|
|
|
// Sort symbols by address.
|
|
for (auto &It : Ret) {
|
|
SmallVectorImpl<DefinedRegular *> &V = It.second;
|
|
std::sort(V.begin(), V.end(), [](DefinedRegular *A, DefinedRegular *B) {
|
|
return A->getRVA() < B->getRVA();
|
|
});
|
|
}
|
|
return Ret;
|
|
}
|
|
|
|
// Construct a map from symbols to their stringified representations.
|
|
static DenseMap<DefinedRegular *, std::string>
|
|
getSymbolStrings(ArrayRef<DefinedRegular *> Syms) {
|
|
std::vector<std::string> Str(Syms.size());
|
|
for_each_n(parallel::par, (size_t)0, Syms.size(), [&](size_t I) {
|
|
raw_string_ostream OS(Str[I]);
|
|
writeHeader(OS, Syms[I]->getRVA(), 0, 0);
|
|
OS << Indent16 << toString(*Syms[I]);
|
|
});
|
|
|
|
DenseMap<DefinedRegular *, std::string> Ret;
|
|
for (size_t I = 0, E = Syms.size(); I < E; ++I)
|
|
Ret[Syms[I]] = std::move(Str[I]);
|
|
return Ret;
|
|
}
|
|
|
|
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());
|
|
|
|
// Collect symbol info that we want to print out.
|
|
std::vector<DefinedRegular *> Syms = getSymbols();
|
|
SymbolMapTy SectionSyms = getSectionSyms(Syms);
|
|
DenseMap<DefinedRegular *, std::string> SymStr = getSymbolStrings(Syms);
|
|
|
|
// Print out the header line.
|
|
OS << "Address Size Align Out In Symbol\n";
|
|
|
|
// Print out file contents.
|
|
for (OutputSection *Sec : OutputSections) {
|
|
writeHeader(OS, Sec->getRVA(), Sec->getVirtualSize(), /*Align=*/PageSize);
|
|
OS << Sec->Name << '\n';
|
|
|
|
for (Chunk *C : Sec->Chunks) {
|
|
auto *SC = dyn_cast<SectionChunk>(C);
|
|
if (!SC)
|
|
continue;
|
|
|
|
writeHeader(OS, SC->getRVA(), SC->getSize(), SC->Alignment);
|
|
OS << Indent8 << SC->File->getName() << ":(" << SC->getSectionName()
|
|
<< ")\n";
|
|
for (DefinedRegular *Sym : SectionSyms[SC])
|
|
OS << SymStr[Sym] << '\n';
|
|
}
|
|
}
|
|
}
|