jak-project/decompiler/ObjectFile/ObjectFileDB.h
2020-08-22 23:30:17 -04:00

106 lines
3 KiB
C++

/*!
* @file ObjectFileDB.h
* A "database" of object files found in DGO files.
* Eliminates duplicate object files, and also assigns unique names to all object files
* (there may be different object files with the same name sometimes)
*/
#ifndef JAK2_DISASSEMBLER_OBJECTFILEDB_H
#define JAK2_DISASSEMBLER_OBJECTFILEDB_H
#include <cassert>
#include <string>
#include <unordered_map>
#include <vector>
#include "LinkedObjectFile.h"
/*!
* A "record" which can be used to identify an object file.
*/
struct ObjectFileRecord {
std::string name;
int version = -1;
uint32_t hash = 0;
std::string to_unique_name() const;
};
/*!
* All of the data for a single object file
*/
struct ObjectFileData {
std::vector<uint8_t> data; // raw bytes
LinkedObjectFile linked_data; // data including linking annotations
ObjectFileRecord record; // name
uint32_t reference_count = 0; // number of times its used.
};
class ObjectFileDB {
public:
ObjectFileDB(const std::vector<std::string>& _dgos);
std::string generate_dgo_listing();
void process_link_data();
void process_labels();
void find_code();
void find_and_write_scripts(const std::string& output_dir);
void write_object_file_words(const std::string& output_dir, bool dump_v3_only);
void write_disassembly(const std::string& output_dir, bool disassemble_objects_without_functions);
void analyze_functions();
private:
void get_objs_from_dgo(const std::string& filename);
void add_obj_from_dgo(const std::string& obj_name,
uint8_t* obj_data,
uint32_t obj_size,
const std::string& dgo_name);
/*!
* Apply f to all ObjectFileData's. Does it in the right order.
*/
template <typename Func>
void for_each_obj(Func f) {
assert(obj_files_by_name.size() == obj_file_order.size());
for(const auto& name : obj_file_order) {
for(auto& obj : obj_files_by_name.at(name)) {
f(obj);
}
}
}
/*!
* Apply f to all functions
* takes (Function, segment, linked_data)
* Does it in the right order.
*/
template <typename Func>
void for_each_function(Func f) {
for_each_obj([&](ObjectFileData& data) {
// printf("IN %s\n", data.record.to_unique_name().c_str());
for (int i = 0; i < int(data.linked_data.segments); i++) {
// printf("seg %d\n", i);
int fn = 0;
for (auto& goal_func : data.linked_data.functions_by_seg.at(i)) {
// printf("fn %d\n", fn);
f(goal_func, i, data);
fn++;
}
}
});
}
// Danger: after adding all object files, we assume that the vector never reallocates.
std::unordered_map<std::string, std::vector<ObjectFileData>> obj_files_by_name;
std::unordered_map<std::string, std::vector<ObjectFileRecord>> obj_files_by_dgo;
std::vector<std::string> obj_file_order;
struct {
uint32_t total_dgo_bytes = 0;
uint32_t total_obj_files = 0;
uint32_t unique_obj_files = 0;
uint32_t unique_obj_bytes = 0;
} stats;
};
#endif // JAK2_DISASSEMBLER_OBJECTFILEDB_H