Remove system_error.h.

[oota-llvm.git] / lib / Object / ObjectFile.cpp

diff --git a/lib/Object/ObjectFile.cpp b/lib/Object/ObjectFile.cpp
index 29aa4b8bdb81319850709792b667b5445a04099c..0be972e26b7eaf7a780b5d97a58b1ca1b87749f1 100644 (file)
--- a/lib/Object/ObjectFile.cpp
+++ b/lib/Object/ObjectFile.cpp
@@ -13,56 +13,81 @@
 
 #include "llvm/Object/ObjectFile.h"
 #include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/FileSystem.h"
 #include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/raw_ostream.h"
+#include <system_error>
 
-namespace llvm {
-namespace object {
+using namespace llvm;
+using namespace object;
 
-ObjectFile::ObjectFile(MemoryBuffer *Object)
-  : MapFile(Object) {
-  assert(MapFile && "Must be a valid MemoryBuffer!");
-  base = reinterpret_cast<const uint8_t *>(MapFile->getBufferStart());
+void ObjectFile::anchor() { }
+
+ObjectFile::ObjectFile(unsigned int Type, MemoryBuffer *Source,
+                       bool BufferOwned)
+    : SymbolicFile(Type, Source, BufferOwned) {}
+
+error_code ObjectFile::printSymbolName(raw_ostream &OS,
+                                       DataRefImpl Symb) const {
+  StringRef Name;
+  if (error_code EC = getSymbolName(Symb, Name))
+    return EC;
+  OS << Name;
+  return object_error::success;
 }
 
-ObjectFile::~ObjectFile() {
-  delete MapFile;
+error_code ObjectFile::getSymbolAlignment(DataRefImpl DRI,
+                                          uint32_t &Result) const {
+  Result = 0;
+  return object_error::success;
 }
 
-StringRef ObjectFile::getFilename() const {
-  return MapFile->getBufferIdentifier();
+section_iterator ObjectFile::getRelocatedSection(DataRefImpl Sec) const {
+  return section_iterator(SectionRef(Sec, this));
 }
 
-ObjectFile *ObjectFile::createObjectFile(MemoryBuffer *Object) {
-  if (!Object || Object->getBufferSize() < 64)
-    return 0;
-  sys::LLVMFileType type = sys::IdentifyFileType(Object->getBufferStart(),
-                                static_cast<unsigned>(Object->getBufferSize()));
-  switch (type) {
-    case sys::ELF_Relocatable_FileType:
-    case sys::ELF_Executable_FileType:
-    case sys::ELF_SharedObject_FileType:
-    case sys::ELF_Core_FileType:
-        return 0;
-    case sys::Mach_O_Object_FileType:
-    case sys::Mach_O_Executable_FileType:
-    case sys::Mach_O_FixedVirtualMemorySharedLib_FileType:
-    case sys::Mach_O_Core_FileType:
-    case sys::Mach_O_PreloadExectuable_FileType:
-    case sys::Mach_O_DynamicallyLinkedSharedLib_FileType:
-    case sys::Mach_O_DynamicLinker_FileType:
-    case sys::Mach_O_Bundle_FileType:
-    case sys::Mach_O_DynamicallyLinkedSharedLibStub_FileType:
-      return 0;
-    case sys::COFF_FileType:
-      return 0;
-    default:
-      llvm_unreachable("Unknown Object File Type");
+ErrorOr<ObjectFile *> ObjectFile::createObjectFile(MemoryBuffer *Object,
+                                                   bool BufferOwned,
+                                                   sys::fs::file_magic Type) {
+  if (Type == sys::fs::file_magic::unknown)
+    Type = sys::fs::identify_magic(Object->getBuffer());
+
+  switch (Type) {
+  case sys::fs::file_magic::unknown:
+  case sys::fs::file_magic::bitcode:
+  case sys::fs::file_magic::archive:
+  case sys::fs::file_magic::macho_universal_binary:
+  case sys::fs::file_magic::windows_resource:
+    if (BufferOwned)
+      delete Object;
+    return object_error::invalid_file_type;
+  case sys::fs::file_magic::elf_relocatable:
+  case sys::fs::file_magic::elf_executable:
+  case sys::fs::file_magic::elf_shared_object:
+  case sys::fs::file_magic::elf_core:
+    return createELFObjectFile(Object, BufferOwned);
+  case sys::fs::file_magic::macho_object:
+  case sys::fs::file_magic::macho_executable:
+  case sys::fs::file_magic::macho_fixed_virtual_memory_shared_lib:
+  case sys::fs::file_magic::macho_core:
+  case sys::fs::file_magic::macho_preload_executable:
+  case sys::fs::file_magic::macho_dynamically_linked_shared_lib:
+  case sys::fs::file_magic::macho_dynamic_linker:
+  case sys::fs::file_magic::macho_bundle:
+  case sys::fs::file_magic::macho_dynamically_linked_shared_lib_stub:
+  case sys::fs::file_magic::macho_dsym_companion:
+    return createMachOObjectFile(Object, BufferOwned);
+  case sys::fs::file_magic::coff_object:
+  case sys::fs::file_magic::coff_import_library:
+  case sys::fs::file_magic::pecoff_executable:
+    return createCOFFObjectFile(Object, BufferOwned);
   }
+  llvm_unreachable("Unexpected Object File Type");
 }
 
-ObjectFile *ObjectFile::createObjectFile(const sys::Path &ObjectPath) {
-  return createObjectFile(MemoryBuffer::getFile(ObjectPath.c_str()));
+ErrorOr<ObjectFile *> ObjectFile::createObjectFile(StringRef ObjectPath) {
+  std::unique_ptr<MemoryBuffer> File;
+  if (error_code EC = MemoryBuffer::getFile(ObjectPath, File))
+    return EC;
+  return createObjectFile(File.release());
 }
-
-} // end namespace object
-} // end namespace llvm