mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-22 12:33:33 +02:00
592cce271e
llvm-svn: 291761
65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
//===-- Decompressor.h ------------------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===/
|
|
|
|
#ifndef LLVM_OBJECT_DECOMPRESSOR_H
|
|
#define LLVM_OBJECT_DECOMPRESSOR_H
|
|
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/ADT/SmallString.h"
|
|
#include "llvm/Object/ObjectFile.h"
|
|
|
|
namespace llvm {
|
|
namespace object {
|
|
|
|
/// @brief Decompressor helps to handle decompression of compressed sections.
|
|
class Decompressor {
|
|
public:
|
|
/// @brief Create decompressor object.
|
|
/// @param Name Section name.
|
|
/// @param Data Section content.
|
|
/// @param IsLE Flag determines if Data is in little endian form.
|
|
/// @param Is64Bit Flag determines if object is 64 bit.
|
|
static Expected<Decompressor> create(StringRef Name, StringRef Data,
|
|
bool IsLE, bool Is64Bit);
|
|
|
|
/// @brief Resize the buffer and uncompress section data into it.
|
|
/// @param Out Destination buffer.
|
|
Error decompress(SmallString<32> &Out);
|
|
|
|
/// @brief Uncompress section data to raw buffer provided.
|
|
/// @param Buffer Destination buffer.
|
|
Error decompress(MutableArrayRef<char> Buffer);
|
|
|
|
/// @brief Return memory buffer size required for decompression.
|
|
uint64_t getDecompressedSize() { return DecompressedSize; }
|
|
|
|
/// @brief Return true if section is compressed, including gnu-styled case.
|
|
static bool isCompressed(const object::SectionRef &Section);
|
|
|
|
/// @brief Return true if section is a ELF compressed one.
|
|
static bool isCompressedELFSection(uint64_t Flags, StringRef Name);
|
|
|
|
/// @brief Return true if section name matches gnu style compressed one.
|
|
static bool isGnuStyle(StringRef Name);
|
|
|
|
private:
|
|
Decompressor(StringRef Data);
|
|
|
|
Error consumeCompressedGnuHeader();
|
|
Error consumeCompressedZLibHeader(bool Is64Bit, bool IsLittleEndian);
|
|
|
|
StringRef SectionData;
|
|
uint64_t DecompressedSize;
|
|
};
|
|
|
|
} // end namespace object
|
|
} // end namespace llvm
|
|
|
|
#endif // LLVM_OBJECT_DECOMPRESSOR_H
|