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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_RUNTIME_IMAGE_H_
#define ART_RUNTIME_IMAGE_H_
#include <string.h>
#include "globals.h"
#include "mirror/object.h"
#include "utils.h"
namespace art {
// header of image files written by ImageWriter, read and validated by Space.
class PACKED(4) ImageHeader {
public:
ImageHeader() : compile_pic_(0) {}
ImageHeader(uint32_t image_begin,
uint32_t image_size_,
uint32_t art_fields_offset,
uint32_t art_fields_size,
uint32_t image_bitmap_offset,
uint32_t image_bitmap_size,
uint32_t image_roots,
uint32_t oat_checksum,
uint32_t oat_file_begin,
uint32_t oat_data_begin,
uint32_t oat_data_end,
uint32_t oat_file_end,
bool compile_pic_);
bool IsValid() const;
const char* GetMagic() const;
uint8_t* GetImageBegin() const {
return reinterpret_cast<uint8_t*>(image_begin_);
}
size_t GetImageSize() const {
return static_cast<uint32_t>(image_size_);
}
size_t GetArtFieldsOffset() const {
return art_fields_offset_;
}
size_t GetArtFieldsSize() const {
return art_fields_size_;
}
size_t GetImageBitmapOffset() const {
return image_bitmap_offset_;
}
size_t GetImageBitmapSize() const {
return image_bitmap_size_;
}
uint32_t GetOatChecksum() const {
return oat_checksum_;
}
void SetOatChecksum(uint32_t oat_checksum) {
oat_checksum_ = oat_checksum;
}
uint8_t* GetOatFileBegin() const {
return reinterpret_cast<uint8_t*>(oat_file_begin_);
}
uint8_t* GetOatDataBegin() const {
return reinterpret_cast<uint8_t*>(oat_data_begin_);
}
uint8_t* GetOatDataEnd() const {
return reinterpret_cast<uint8_t*>(oat_data_end_);
}
uint8_t* GetOatFileEnd() const {
return reinterpret_cast<uint8_t*>(oat_file_end_);
}
off_t GetPatchDelta() const {
return patch_delta_;
}
static std::string GetOatLocationFromImageLocation(const std::string& image) {
std::string oat_filename = image;
if (oat_filename.length() <= 3) {
oat_filename += ".oat";
} else {
oat_filename.replace(oat_filename.length() - 3, 3, "oat");
}
return oat_filename;
}
enum ImageRoot {
kResolutionMethod,
kImtConflictMethod,
kImtUnimplementedMethod,
kDefaultImt,
kCalleeSaveMethod,
kRefsOnlySaveMethod,
kRefsAndArgsSaveMethod,
kDexCaches,
kClassRoots,
kImageRootsMax,
};
mirror::Object* GetImageRoot(ImageRoot image_root) const
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
mirror::ObjectArray<mirror::Object>* GetImageRoots() const
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void RelocateImage(off_t delta);
bool CompilePic() const {
return compile_pic_ != 0;
}
private:
static const uint8_t kImageMagic[4];
static const uint8_t kImageVersion[4];
uint8_t magic_[4];
uint8_t version_[4];
// Required base address for mapping the image.
uint32_t image_begin_;
// Image size, not page aligned.
uint32_t image_size_;
// ArtField array offset.
uint32_t art_fields_offset_;
// ArtField size in bytes.
uint32_t art_fields_size_;
// Image bitmap offset in the file.
uint32_t image_bitmap_offset_;
// Size of the image bitmap.
uint32_t image_bitmap_size_;
// Checksum of the oat file we link to for load time sanity check.
uint32_t oat_checksum_;
// Start address for oat file. Will be before oat_data_begin_ for .so files.
uint32_t oat_file_begin_;
// Required oat address expected by image Method::GetCode() pointers.
uint32_t oat_data_begin_;
// End of oat data address range for this image file.
uint32_t oat_data_end_;
// End of oat file address range. will be after oat_data_end_ for
// .so files. Used for positioning a following alloc spaces.
uint32_t oat_file_end_;
// The total delta that this image has been patched.
int32_t patch_delta_;
// Absolute address of an Object[] of objects needed to reinitialize from an image.
uint32_t image_roots_;
// Boolean (0 or 1) to denote if the image was compiled with --compile-pic option
const uint32_t compile_pic_;
friend class ImageWriter;
};
} // namespace art
#endif // ART_RUNTIME_IMAGE_H_
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