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/*
* Copyright 2017 WebAssembly Community Group participants
*
* 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 WABT_LINK_H_
#define WABT_LINK_H_
#include <memory>
#include <vector>
#include "src/binary.h"
#include "src/common.h"
namespace wabt {
namespace link {
class LinkerInputBinary;
struct FunctionImport {
std::string module_name;
std::string name;
Index sig_index;
bool active; /* Is this import present in the linked binary */
Index relocated_function_index;
LinkerInputBinary* foreign_binary;
Index foreign_index;
};
struct GlobalImport {
std::string module_name;
std::string name;
Type type;
bool mutable_;
};
struct DataSegment {
Index memory_index;
Address offset;
const uint8_t* data;
size_t size;
};
struct Export {
ExternalKind kind;
std::string name;
Index index;
};
struct Section {
WABT_DISALLOW_COPY_AND_ASSIGN(Section);
Section();
~Section();
/* The binary to which this section belongs */
LinkerInputBinary* binary;
std::vector<Reloc> relocations; /* The relocations for this section */
BinarySection section_code;
size_t size;
size_t offset;
size_t payload_size;
size_t payload_offset;
/* For known sections, the count of the number of elements in the section */
Index count;
union {
/* DATA section data */
std::vector<DataSegment>* data_segments;
/* MEMORY section data */
uint64_t initial;
} data;
/* The offset at which this section appears within the combined output
* section. */
size_t output_payload_offset;
};
typedef std::vector<Section*> SectionPtrVector;
class LinkerInputBinary {
public:
WABT_DISALLOW_COPY_AND_ASSIGN(LinkerInputBinary);
LinkerInputBinary(const char* filename, const std::vector<uint8_t>& data);
Index RelocateFuncIndex(Index findex);
Index RelocateTypeIndex(Index index);
Index RelocateGlobalIndex(Index index);
bool IsValidFunctionIndex(Index index);
bool IsFunctionImport(Index index);
bool IsInactiveFunctionImport(Index index);
const char* filename;
std::vector<uint8_t> data;
std::vector<std::unique_ptr<Section>> sections;
std::vector<Export> exports;
std::vector<FunctionImport> function_imports;
Index active_function_imports;
std::vector<GlobalImport> global_imports;
Index active_global_imports;
Index type_index_offset;
Index function_index_offset;
Index imported_function_index_offset;
Index global_index_offset;
Index imported_global_index_offset;
Index table_index_offset;
Index memory_page_count;
Index memory_page_offset;
Index table_elem_count = 0;
Index function_count = 0;
std::vector<std::string> debug_names;
};
} // namespace link
} // namespace wabt
#endif /* WABT_LINK_H_ */
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