llvm/lld/MachO/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, which maps address ranges to their
// respective contents, plus the input file these contents were originally from.
// The contents (typically symbols) are listed in address order. Dead-stripped
// contents are included as well.
//
// # Path: test
// # Arch: x86_84
// # Object files:
// [  0] linker synthesized
// [  1] a.o
// # Sections:
// # Address    Size       Segment  Section
// 0x1000005C0  0x0000004C __TEXT   __text
// # Symbols:
// # Address    Size       File  Name
// 0x1000005C0  0x00000001 [  1] _main
// # Dead Stripped Symbols:
// #            Size       File  Name
// <<dead>>     0x00000001 [  1] _foo
//
//===----------------------------------------------------------------------===//

#include "MapFile.h"
#include "ConcatOutputSection.h"
#include "Config.h"
#include "InputFiles.h"
#include "InputSection.h"
#include "OutputSegment.h"
#include "Symbols.h"
#include "SyntheticSections.h"
#include "Target.h"
#include "lld/Common/ErrorHandler.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/Support/Parallel.h"
#include "llvm/Support/TimeProfiler.h"

usingnamespacellvm;
usingnamespacellvm::sys;
usingnamespacelld;
usingnamespacelld::macho;

struct CStringInfo { … };

struct MapInfo { … };

static MapInfo gatherMapInfo() { … }

// We use this instead of `toString(const InputFile *)` as we don't want to
// include the dylib install name in our output.
static void printFileName(raw_fd_ostream &os, const InputFile *f) { … }

// For printing the contents of the __stubs and __la_symbol_ptr sections.
static void printStubsEntries(
    raw_fd_ostream &os,
    const DenseMap<lld::macho::InputFile *, uint32_t> &readerToFileOrdinal,
    const OutputSection *osec, size_t entrySize) { … }

static void printNonLazyPointerSection(raw_fd_ostream &os,
                                       NonLazyPointerSectionBase *osec) { … }

static uint64_t getSymSizeForMap(Defined *sym) { … }

void macho::writeMapFile() { … }