1 //===- SymbolicFile.cpp - Interface that only provides symbols ------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file defines a file format independent SymbolicFile class.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "llvm/Object/SymbolicFile.h"
15 #include "llvm/ADT/StringRef.h"
16 #include "llvm/BinaryFormat/Magic.h"
17 #include "llvm/Object/COFFImportFile.h"
18 #include "llvm/Object/Error.h"
19 #include "llvm/Object/IRObjectFile.h"
20 #include "llvm/Object/ObjectFile.h"
21 #include "llvm/Support/Compiler.h"
22 #include "llvm/Support/Error.h"
23 #include "llvm/Support/ErrorHandling.h"
24 #include "llvm/Support/ErrorOr.h"
25 #include "llvm/Support/FileSystem.h"
26 #include "llvm/Support/MemoryBuffer.h"
27 #include <algorithm>
28 #include <memory>
29
30 using namespace llvm;
31 using namespace object;
32
SymbolicFile(unsigned int Type,MemoryBufferRef Source)33 SymbolicFile::SymbolicFile(unsigned int Type, MemoryBufferRef Source)
34 : Binary(Type, Source) {}
35
36 SymbolicFile::~SymbolicFile() = default;
37
38 Expected<std::unique_ptr<SymbolicFile>>
createSymbolicFile(MemoryBufferRef Object,file_magic Type,LLVMContext * Context)39 SymbolicFile::createSymbolicFile(MemoryBufferRef Object, file_magic Type,
40 LLVMContext *Context) {
41 StringRef Data = Object.getBuffer();
42 if (Type == file_magic::unknown)
43 Type = identify_magic(Data);
44
45 switch (Type) {
46 case file_magic::bitcode:
47 if (Context)
48 return IRObjectFile::create(Object, *Context);
49 LLVM_FALLTHROUGH;
50 case file_magic::unknown:
51 case file_magic::archive:
52 case file_magic::coff_cl_gl_object:
53 case file_magic::macho_universal_binary:
54 case file_magic::windows_resource:
55 case file_magic::pdb:
56 return errorCodeToError(object_error::invalid_file_type);
57 case file_magic::elf:
58 case file_magic::elf_executable:
59 case file_magic::elf_shared_object:
60 case file_magic::elf_core:
61 case file_magic::macho_executable:
62 case file_magic::macho_fixed_virtual_memory_shared_lib:
63 case file_magic::macho_core:
64 case file_magic::macho_preload_executable:
65 case file_magic::macho_dynamically_linked_shared_lib:
66 case file_magic::macho_dynamic_linker:
67 case file_magic::macho_bundle:
68 case file_magic::macho_dynamically_linked_shared_lib_stub:
69 case file_magic::macho_dsym_companion:
70 case file_magic::macho_kext_bundle:
71 case file_magic::pecoff_executable:
72 case file_magic::wasm_object:
73 return ObjectFile::createObjectFile(Object, Type);
74 case file_magic::coff_import_library:
75 return std::unique_ptr<SymbolicFile>(new COFFImportFile(Object));
76 case file_magic::elf_relocatable:
77 case file_magic::macho_object:
78 case file_magic::coff_object: {
79 Expected<std::unique_ptr<ObjectFile>> Obj =
80 ObjectFile::createObjectFile(Object, Type);
81 if (!Obj || !Context)
82 return std::move(Obj);
83
84 Expected<MemoryBufferRef> BCData =
85 IRObjectFile::findBitcodeInObject(*Obj->get());
86 if (!BCData) {
87 consumeError(BCData.takeError());
88 return std::move(Obj);
89 }
90
91 return IRObjectFile::create(
92 MemoryBufferRef(BCData->getBuffer(), Object.getBufferIdentifier()),
93 *Context);
94 }
95 }
96 llvm_unreachable("Unexpected Binary File Type");
97 }
98