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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120195 91177308-0d34-0410-b5e6-96231b3b80d8
76 lines
2.4 KiB
C++
76 lines
2.4 KiB
C++
//===- MachOObject.h - Mach-O Object File Wrapper ---------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_OBJECT_MACHOOBJECT_H
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#define LLVM_OBJECT_MACHOOBJECT_H
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#include <string>
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#include "llvm/ADT/OwningPtr.h"
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namespace llvm {
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class MemoryBuffer;
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namespace object {
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/// \brief Wrapper object for manipulating Mach-O object files.
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///
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/// This class is designed to implement a full-featured, efficient, portable,
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/// and robust Mach-O interface to Mach-O object files. It does not attempt to
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/// smooth over rough edges in the Mach-O format or generalize access to object
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/// independent features.
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///
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/// The class is designed around accessing the Mach-O object which is expected
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/// to be fully loaded into memory.
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///
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/// This class is *not* suitable for concurrent use. For efficient operation,
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/// the class uses APIs which rely on the ability to cache the results of
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/// certain calls in internal objects which are not safe for concurrent
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/// access. This allows the API to be zero-copy on the common paths.
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//
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// FIXME: It would be cool if we supported a "paged" MemoryBuffer
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// implementation. This would allow us to implement a more sensible version of
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// MemoryObject which can work like a MemoryBuffer, but be more efficient for
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// objects which are in the current address space.
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class MachOObject {
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public:
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private:
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OwningPtr<MemoryBuffer> Buffer;
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/// Whether the object is little endian.
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bool IsLittleEndian;
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/// Whether the object is 64-bit.
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bool Is64Bit;
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private:
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MachOObject(MemoryBuffer *Buffer, bool IsLittleEndian, bool Is64Bit);
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public:
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/// \brief Load a Mach-O object from a MemoryBuffer object.
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///
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/// \param Buffer - The buffer to load the object from. This routine takes
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/// exclusive ownership of the buffer (which is passed to the returned object
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/// on success).
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/// \param ErrorStr [out] - If given, will be set to a user readable error
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/// message on failure.
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/// \returns The loaded object, or null on error.
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static MachOObject *LoadFromBuffer(MemoryBuffer *Buffer,
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std::string *ErrorStr = 0);
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/// @name Object Header Information
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/// @{
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/// @}
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};
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} // end namespace object
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} // end namespace llvm
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#endif
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