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annotate lib/Object/Binary.cpp @ 77:54457678186b LLVM3.6

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LLVM 3.6
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 08 Sep 2014 22:06:00 +0900
parents 95c75e76d11b
children 60c9769439b8
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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 ErrorOr<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_relocatable:
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47 case sys::fs::file_magic::elf_executable:
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48 case sys::fs::file_magic::elf_shared_object:
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49 case sys::fs::file_magic::elf_core:
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50 case sys::fs::file_magic::macho_object:
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51 case sys::fs::file_magic::macho_executable:
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52 case sys::fs::file_magic::macho_fixed_virtual_memory_shared_lib:
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53 case sys::fs::file_magic::macho_core:
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54 case sys::fs::file_magic::macho_preload_executable:
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55 case sys::fs::file_magic::macho_dynamically_linked_shared_lib:
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56 case sys::fs::file_magic::macho_dynamic_linker:
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57 case sys::fs::file_magic::macho_bundle:
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58 case sys::fs::file_magic::macho_dynamically_linked_shared_lib_stub:
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59 case sys::fs::file_magic::macho_dsym_companion:
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60 case sys::fs::file_magic::coff_object:
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61 case sys::fs::file_magic::coff_import_library:
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62 case sys::fs::file_magic::pecoff_executable:
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63 case sys::fs::file_magic::bitcode:
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64 return ObjectFile::createSymbolicFile(Buffer, Type, Context);
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65 case sys::fs::file_magic::macho_universal_binary:
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66 return MachOUniversalBinary::create(Buffer);
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67 case sys::fs::file_magic::unknown:
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68 case sys::fs::file_magic::windows_resource:
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69 // Unrecognized object file format.
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70 return object_error::invalid_file_type;
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71 }
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72 llvm_unreachable("Unexpected Binary File Type");
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73 }
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74
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75 ErrorOr<OwningBinary<Binary>> object::createBinary(StringRef Path) {
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76 ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr =
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77 MemoryBuffer::getFileOrSTDIN(Path);
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78 if (std::error_code EC = FileOrErr.getError())
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79 return EC;
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80 std::unique_ptr<MemoryBuffer> &Buffer = FileOrErr.get();
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81
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82 ErrorOr<std::unique_ptr<Binary>> BinOrErr =
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83 createBinary(Buffer->getMemBufferRef());
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84 if (std::error_code EC = BinOrErr.getError())
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85 return EC;
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86 std::unique_ptr<Binary> &Bin = BinOrErr.get();
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87
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88 return OwningBinary<Binary>(std::move(Bin), std::move(Buffer));
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89 }