llvm/lld/COFF/MapFile.cpp

//===- 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 /map option in the same format as link.exe
// (based on observations)
//
// Header (program name, timestamp info, preferred load address)
//
// Section list (Start = Section index:Base address):
// Start         Length     Name                   Class
// 0001:00001000 00000015H .text                   CODE
//
// Symbols list:
// Address        Publics by Value    Rva + Base          Lib:Object
// 0001:00001000  main                 0000000140001000    main.obj
// 0001:00001300  ?__scrt_common_main@@YAHXZ  0000000140001300 libcmt:exe_main.obj
//
// entry point at        0001:00000360
//
// Static symbols
//
// 0000:00000000  __guard_fids__       0000000140000000     libcmt : exe_main.obj
//===----------------------------------------------------------------------===//

#include "MapFile.h"
#include "COFFLinkerContext.h"
#include "SymbolTable.h"
#include "Symbols.h"
#include "Writer.h"
#include "lld/Common/ErrorHandler.h"
#include "lld/Common/Timer.h"
#include "llvm/Support/Parallel.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/TimeProfiler.h"
#include "llvm/Support/raw_ostream.h"

usingnamespacellvm;
usingnamespacellvm::object;
usingnamespacelld;
usingnamespacelld::coff;

// Print out the first two columns of a line.
static void writeHeader(raw_ostream &os, uint32_t sec, uint64_t addr) { … }

// Write the time stamp with the format used by link.exe
// It seems identical to strftime with "%c" on msvc build, but we need a
// locale-agnostic version.
static void writeFormattedTimestamp(raw_ostream &os, time_t tds) { … }

static void sortUniqueSymbols(std::vector<Defined *> &syms,
                              uint64_t imageBase) { … }

// Returns the lists of all symbols that we want to print out.
static void getSymbols(const COFFLinkerContext &ctx,
                       std::vector<Defined *> &syms,
                       std::vector<Defined *> &staticSyms) { … }

// Construct a map from symbols to their stringified representations.
static DenseMap<Defined *, std::string>
getSymbolStrings(const COFFLinkerContext &ctx, ArrayRef<Defined *> syms) { … }

void lld::coff::writeMapFile(COFFLinkerContext &ctx) { … }