Use std::is_sorted instead of manual loops. NFC

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

diff --git a/lib/Object/ObjectFile.cpp b/lib/Object/ObjectFile.cpp
index 2a6e086137b10bf3de5fbd2d54ee060a85348704..d12dc411361c80fa9b6fdb35da361f8a6c69b786 100644 (file)
--- a/lib/Object/ObjectFile.cpp
+++ b/lib/Object/ObjectFile.cpp
@@ -11,58 +11,106 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/Object/COFF.h"
+#include "llvm/Object/MachO.h"
 #include "llvm/Object/ObjectFile.h"
 #include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/FileSystem.h"
 #include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/Path.h"
-#include "llvm/Support/system_error.h"
+#include "llvm/Support/raw_ostream.h"
+#include <system_error>
 
 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, MemoryBufferRef Source)
+    : SymbolicFile(Type, Source) {}
+
+bool SectionRef::containsSymbol(SymbolRef S) const {
+  ErrorOr<section_iterator> SymSec = S.getSection();
+  if (!SymSec)
+    return false;
+  return *this == **SymSec;
 }
 
-ObjectFile::~ObjectFile() {
-  delete MapFile;
+uint64_t ObjectFile::getSymbolValue(DataRefImpl Ref) const {
+  uint32_t Flags = getSymbolFlags(Ref);
+  if (Flags & SymbolRef::SF_Undefined)
+    return 0;
+  if (Flags & SymbolRef::SF_Common)
+    return getCommonSymbolSize(Ref);
+  return getSymbolValueImpl(Ref);
 }
 
-StringRef ObjectFile::getFilename() const {
-  return MapFile->getBufferIdentifier();
+std::error_code ObjectFile::printSymbolName(raw_ostream &OS,
+                                            DataRefImpl Symb) const {
+  ErrorOr<StringRef> Name = getSymbolName(Symb);
+  if (std::error_code EC = Name.getError())
+    return EC;
+  OS << *Name;
+  return std::error_code();
 }
 
-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_PreloadExecutable_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");
+uint32_t ObjectFile::getSymbolAlignment(DataRefImpl DRI) const { return 0; }
+
+section_iterator ObjectFile::getRelocatedSection(DataRefImpl Sec) const {
+  return section_iterator(SectionRef(Sec, this));
+}
+
+ErrorOr<std::unique_ptr<ObjectFile>>
+ObjectFile::createObjectFile(MemoryBufferRef Object, sys::fs::file_magic Type) {
+  StringRef Data = Object.getBuffer();
+  if (Type == sys::fs::file_magic::unknown)
+    Type = sys::fs::identify_magic(Data);
+
+  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:
+    return object_error::invalid_file_type;
+  case sys::fs::file_magic::elf:
+  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);
+  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:
+  case sys::fs::file_magic::macho_kext_bundle:
+    return createMachOObjectFile(Object);
+  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);
   }
+  llvm_unreachable("Unexpected Object File Type");
 }
 
-ObjectFile *ObjectFile::createObjectFile(StringRef ObjectPath) {
-  error_code ec;
-  return createObjectFile(MemoryBuffer::getFile(ObjectPath, ec));
+ErrorOr<OwningBinary<ObjectFile>>
+ObjectFile::createObjectFile(StringRef ObjectPath) {
+  ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr =
+      MemoryBuffer::getFile(ObjectPath);
+  if (std::error_code EC = FileOrErr.getError())
+    return EC;
+  std::unique_ptr<MemoryBuffer> Buffer = std::move(FileOrErr.get());
+
+  ErrorOr<std::unique_ptr<ObjectFile>> ObjOrErr =
+      createObjectFile(Buffer->getMemBufferRef());
+  if (std::error_code EC = ObjOrErr.getError())
+    return EC;
+  std::unique_ptr<ObjectFile> Obj = std::move(ObjOrErr.get());
+
+  return OwningBinary<ObjectFile>(std::move(Obj), std::move(Buffer));
 }