Object: Get rid of sys::Path, Triple, and cleanup namespace.
[oota-llvm.git] / lib / Object / ObjectFile.cpp
1 //===- ObjectFile.cpp - File format independent object file -----*- C++ -*-===//
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 ObjectFile class.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "llvm/Object/ObjectFile.h"
15 #include "llvm/Support/ErrorHandling.h"
16 #include "llvm/Support/MemoryBuffer.h"
17 #include "llvm/System/Path.h"
18
19 using namespace llvm;
20 using namespace object;
21
22 ObjectFile::ObjectFile(MemoryBuffer *Object)
23   : MapFile(Object) {
24   assert(MapFile && "Must be a valid MemoryBuffer!");
25   base = reinterpret_cast<const uint8_t *>(MapFile->getBufferStart());
26 }
27
28 ObjectFile::~ObjectFile() {
29   delete MapFile;
30 }
31
32 StringRef ObjectFile::getFilename() const {
33   return MapFile->getBufferIdentifier();
34 }
35
36 ObjectFile *ObjectFile::createObjectFile(MemoryBuffer *Object) {
37   if (!Object || Object->getBufferSize() < 64)
38     return 0;
39   sys::LLVMFileType type = sys::IdentifyFileType(Object->getBufferStart(),
40                                 static_cast<unsigned>(Object->getBufferSize()));
41   switch (type) {
42     case sys::ELF_Relocatable_FileType:
43     case sys::ELF_Executable_FileType:
44     case sys::ELF_SharedObject_FileType:
45     case sys::ELF_Core_FileType:
46         return 0;
47     case sys::Mach_O_Object_FileType:
48     case sys::Mach_O_Executable_FileType:
49     case sys::Mach_O_FixedVirtualMemorySharedLib_FileType:
50     case sys::Mach_O_Core_FileType:
51     case sys::Mach_O_PreloadExectuable_FileType:
52     case sys::Mach_O_DynamicallyLinkedSharedLib_FileType:
53     case sys::Mach_O_DynamicLinker_FileType:
54     case sys::Mach_O_Bundle_FileType:
55     case sys::Mach_O_DynamicallyLinkedSharedLibStub_FileType:
56       return 0;
57     case sys::COFF_FileType:
58       return 0;
59     default:
60       llvm_unreachable("Unknown Object File Type");
61   }
62 }
63
64 ObjectFile *ObjectFile::createObjectFile(StringRef ObjectPath) {
65   return createObjectFile(MemoryBuffer::getFile(ObjectPath));
66 }