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decomp: new feature in decompiler to hash the contents of a function for easy comparison

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This commit is contained in:
Tyler Wilding
2026-04-19 15:53:17 -04:00
parent 174057791e
commit 65971bb6d6
9 changed files with 41 additions and 5 deletions
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decompiler/ObjectFile/ObjectFileDB.cpp
+16 -1
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@@ -11,6 +11,7 @@
#include <cstring>
#include <map>
#include <set>
#include <unordered_map>
#include "LinkedObjectFileCreation.h"
@@ -34,6 +35,7 @@
#include "decompiler/data/game_text.h"
#include "decompiler/data/tpage.h"
#include "third-party/json.hpp"
#include "third-party/xdelta3/xdelta3.h"
namespace decompiler {
@@ -630,18 +632,26 @@ void ObjectFileDB::write_object_file_words(const fs::path& output_dir,
void ObjectFileDB::write_disassembly(const fs::path& output_dir,
bool disassemble_data,
bool disassemble_code,
bool print_hex) {
bool print_hex,
bool dump_function_metadata) {
lg::info("- Writing functions...");
Timer timer;
uint32_t total_bytes = 0, total_files = 0;
std::string asm_functions;
std::unordered_map<std::string, std::unordered_map<std::string, std::string>> file_func_metadata_map = {};
for_each_obj([&](ObjectFileData& obj) {
if (((obj.obj_version == 3 || (obj.obj_version == 5 && obj.linked_data.has_any_functions())) &&
disassemble_code) ||
(obj.obj_version != 3 && disassemble_data)) {
auto file_text = obj.linked_data.print_disassembly(print_hex);
if (dump_function_metadata) {
if (!file_func_metadata_map.contains(obj.to_unique_name())) {
file_func_metadata_map[obj.to_unique_name()] = std::unordered_map<std::string, std::string>{};
}
obj.linked_data.dump_asm_function_metadata(file_func_metadata_map[obj.to_unique_name()]);
}
asm_functions += obj.linked_data.print_asm_function_disassembly(obj.to_unique_name());
auto file_name = output_dir / (obj.to_unique_name() + ".asm");
@@ -655,6 +665,11 @@ void ObjectFileDB::write_disassembly(const fs::path& output_dir,
total_files++;
file_util::write_text_file(output_dir / "asm_functions.func", asm_functions);
if (dump_function_metadata) {
json data = file_func_metadata_map;
file_util::write_text_file(output_dir / "func_metadata.json", data.dump(2));
}
lg::info("Wrote functions dumps:");
lg::info(" Total {} files", total_files);
lg::info(" Total {} MB", total_bytes / ((float)(1u << 20u)));