2 * Copyright (C) 2012 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #ifndef ART_COMPILER_ELF_WRITER_H_
18 #define ART_COMPILER_ELF_WRITER_H_
25 #include "base/macros.h"
26 #include "base/mutex.h"
28 #include "utils/array_ref.h"
36 struct MethodDebugInfo;
41 // Looks up information about location of oat file in elf file container.
42 // Used for ImageWriter to perform memory layout.
43 static void GetOatElfInformation(File* file,
44 size_t* oat_loaded_size,
45 size_t* oat_data_offset);
47 // Returns runtime oat_data runtime address for an opened ElfFile.
48 static uintptr_t GetOatDataAddress(ElfFile* elf_file);
50 static bool Fixup(File* file, uintptr_t oat_data_begin);
52 virtual ~ElfWriter() {}
54 virtual void Start() = 0;
55 virtual void SetLoadedSectionSizes(size_t rodata_size, size_t text_size, size_t bss_size) = 0;
56 virtual void PrepareDebugInfo(const ArrayRef<const debug::MethodDebugInfo>& method_infos) = 0;
57 virtual OutputStream* StartRoData() = 0;
58 virtual void EndRoData(OutputStream* rodata) = 0;
59 virtual OutputStream* StartText() = 0;
60 virtual void EndText(OutputStream* text) = 0;
61 virtual void WriteDynamicSection() = 0;
62 virtual void WriteDebugInfo(const ArrayRef<const debug::MethodDebugInfo>& method_infos) = 0;
63 virtual void WritePatchLocations(const ArrayRef<const uintptr_t>& patch_locations) = 0;
64 virtual bool End() = 0;
66 // Get the ELF writer's stream. This stream can be used for writing data directly
67 // to a section after the section has been finished. When that's done, the user
68 // should Seek() back to the position where the stream was before this operation.
69 virtual OutputStream* GetStream() = 0;
71 // Get the size that the loaded ELF file will occupy in memory.
72 virtual size_t GetLoadedSize() = 0;
75 ElfWriter() = default;
80 #endif // ART_COMPILER_ELF_WRITER_H_