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annotate lib/Object/Binary.cpp @ 120:1172e4bd9c6f

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update 4.0.0
author mir3636
date Fri, 25 Nov 2016 19:14:25 +0900
parents afa8332a0e37
children 803732b1fca8
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1 //===- Binary.cpp - A generic binary file -----------------------*- C++ -*-===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This file defines the Binary class.
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11 //
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12 //===----------------------------------------------------------------------===//
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13
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14 #include "llvm/Object/Binary.h"
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15 #include "llvm/ADT/StringRef.h"
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16 #include "llvm/Support/FileSystem.h"
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17 #include "llvm/Support/MemoryBuffer.h"
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18 #include "llvm/Support/Path.h"
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19
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20 // Include headers for createBinary.
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21 #include "llvm/Object/Archive.h"
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22 #include "llvm/Object/MachOUniversal.h"
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23 #include "llvm/Object/ObjectFile.h"
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24
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25 using namespace llvm;
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26 using namespace object;
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27
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28 Binary::~Binary() {}
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29
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30 Binary::Binary(unsigned int Type, MemoryBufferRef Source)
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31 : TypeID(Type), Data(Source) {}
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33 StringRef Binary::getData() const { return Data.getBuffer(); }
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34
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35 StringRef Binary::getFileName() const { return Data.getBufferIdentifier(); }
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37 MemoryBufferRef Binary::getMemoryBufferRef() const { return Data; }
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38
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39 Expected<std::unique_ptr<Binary>> object::createBinary(MemoryBufferRef Buffer,
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40 LLVMContext *Context) {
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41 sys::fs::file_magic Type = sys::fs::identify_magic(Buffer.getBuffer());
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42
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43 switch (Type) {
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44 case sys::fs::file_magic::archive:
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45 return Archive::create(Buffer);
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46 case sys::fs::file_magic::elf:
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47 case sys::fs::file_magic::elf_relocatable:
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48 case sys::fs::file_magic::elf_executable:
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49 case sys::fs::file_magic::elf_shared_object:
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50 case sys::fs::file_magic::elf_core:
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51 case sys::fs::file_magic::macho_object:
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52 case sys::fs::file_magic::macho_executable:
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53 case sys::fs::file_magic::macho_fixed_virtual_memory_shared_lib:
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54 case sys::fs::file_magic::macho_core:
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55 case sys::fs::file_magic::macho_preload_executable:
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56 case sys::fs::file_magic::macho_dynamically_linked_shared_lib:
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57 case sys::fs::file_magic::macho_dynamic_linker:
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58 case sys::fs::file_magic::macho_bundle:
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59 case sys::fs::file_magic::macho_dynamically_linked_shared_lib_stub:
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60 case sys::fs::file_magic::macho_dsym_companion:
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61 case sys::fs::file_magic::macho_kext_bundle:
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62 case sys::fs::file_magic::coff_object:
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63 case sys::fs::file_magic::coff_import_library:
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64 case sys::fs::file_magic::pecoff_executable:
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65 case sys::fs::file_magic::bitcode:
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66 return ObjectFile::createSymbolicFile(Buffer, Type, Context);
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67 case sys::fs::file_magic::macho_universal_binary:
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68 return MachOUniversalBinary::create(Buffer);
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69 case sys::fs::file_magic::unknown:
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70 case sys::fs::file_magic::coff_cl_gl_object:
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71 case sys::fs::file_magic::windows_resource:
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72 // Unrecognized object file format.
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73 return errorCodeToError(object_error::invalid_file_type);
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74 }
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75 llvm_unreachable("Unexpected Binary File Type");
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76 }
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78 Expected<OwningBinary<Binary>> object::createBinary(StringRef Path) {
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79 ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr =
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80 MemoryBuffer::getFileOrSTDIN(Path);
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81 if (std::error_code EC = FileOrErr.getError())
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82 return errorCodeToError(EC);
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83 std::unique_ptr<MemoryBuffer> &Buffer = FileOrErr.get();
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85 Expected<std::unique_ptr<Binary>> BinOrErr =
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86 createBinary(Buffer->getMemBufferRef());
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87 if (!BinOrErr)
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88 return BinOrErr.takeError();
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89 std::unique_ptr<Binary> &Bin = BinOrErr.get();
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90
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91 return OwningBinary<Binary>(std::move(Bin), std::move(Buffer));
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92 }