src/ld/InputFiles.h

   1 /* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-*
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   3  * Copyright (c) 2009 Apple Inc. All rights reserved.
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   9  * Version 2.0 (the 'License'). You may not use this file except in
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  11  * http://www.opensource.apple.com/apsl/ and read it before using this
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  24
  25 #ifndef __INPUT_FILES_H__
  26 #define __INPUT_FILES_H__
  27
  28 #include <stdlib.h>
  29 #include <sys/types.h>
  30 #include <sys/stat.h>
  31 #include <sys/mman.h>
  32 #include <sys/sysctl.h>
  33 #include <fcntl.h>
  34 #include <errno.h>
  35 #include <limits.h>
  36 #include <unistd.h>
  37 #include <mach/mach_time.h>
  38 #include <mach/vm_statistics.h>
  39 #include <mach/mach_init.h>
  40 #include <mach/mach_host.h>
  41 #include <dlfcn.h>
  42 #include <mach-o/dyld.h>
  43
  44 #include <vector>
  45
  46 #include "Options.h"
  47 #include "ld.hpp"
  48
  49 namespace ld {
  50 namespace tool {
  51
  52 class InputFiles : public ld::dylib::File::DylibHandler
  53 {
  54 public:
  55                                                                 InputFiles(Options& opts, const char** archName);
  56
  57         // implementation from ld::dylib::File::DylibHandler
  58         virtual ld::dylib::File*        findDylib(const char* installPath, const char* fromPath);
  59
  60         // iterates all atoms in initial files
  61         bool                                            forEachInitialAtom(ld::File::AtomHandler&) const;
  62         // searches libraries for name
  63         bool                                            searchLibraries(const char* name, bool searchDylibs, bool searchArchives, ld::File::AtomHandler&) const;
  64         // see if any linked dylibs export a weak def of symbol
  65         bool                                            searchWeakDefInDylib(const char* name) const;
  66         // copy dylibs to link with in command line order
  67         void                                            dylibs(ld::Internal& state);
  68
  69         bool                                            inferredArch() const { return _inferredArch; }
  70
  71         uint32_t                                        nextInputOrdinal() const  { return _nextInputOrdinal++; }
  72
  73         // for -print_statistics
  74         uint64_t                                        _totalObjectSize;
  75         uint64_t                                        _totalArchiveSize;
  76         uint32_t                                        _totalObjectLoaded;
  77         uint32_t                                        _totalArchivesLoaded;
  78         uint32_t                                        _totalDylibsLoaded;
  79
  80
  81 private:
  82         void                                            inferArchitecture(Options& opts, const char** archName);
  83         const char*                                     fileArch(const uint8_t* p, unsigned len);
  84         ld::File*                                       makeFile(const Options::FileInfo& info);
  85         ld::File*                                       addDylib(ld::dylib::File* f,        const Options::FileInfo& info, uint64_t mappedLen);
  86         ld::File*                                       addObject(ld::relocatable::File* f, const Options::FileInfo& info, uint64_t mappedLen);
  87         ld::File*                                       addArchive(ld::File* f,             const Options::FileInfo& info, uint64_t mappedLen);
  88         void                                            logTraceInfo (const char* format, ...) const;
  89         void                                            logDylib(ld::File*, bool indirect);
  90         void                                            logArchive(ld::File*) const;
  91         void                                            createIndirectDylibs();
  92         void                                            checkDylibClientRestrictions(ld::dylib::File*);
  93         void                                            createOpaqueFileSections();
  94
  95         class CStringEquals {
  96         public:
  97                 bool operator()(const char* left, const char* right) const { return (strcmp(left, right) == 0); }
  98         };
  99         typedef __gnu_cxx::hash_map<const char*, ld::dylib::File*, __gnu_cxx::hash<const char*>, CStringEquals> InstallNameToDylib;
 100
 101         const Options&                          _options;
 102         std::vector<ld::File*>          _inputFiles;
 103         mutable std::set<class ld::File*>       _archiveFilesLogged;
 104         InstallNameToDylib                      _installPathToDylibs;
 105         std::set<ld::dylib::File*>      _allDylibs;
 106         ld::dylib::File*                        _bundleLoader;
 107         mutable uint32_t                        _nextInputOrdinal;
 108         bool                                            _allDirectDylibsLoaded;
 109         bool                                            _inferredArch;
 110 };
 111
 112 } // namespace tool
 113 } // namespace ld
 114
 115 #endif // __INPUT_FILES_H__