NandRequestThread

tools/custom/apply_objdiff_mappings.py

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+# Thanks KooShnoo! https://discord.com/channels/727908905392275526/1024871155804426310/1329716224971767891
+
+"""
+objdiff allows one to map symbols from the target binary to the source binary.
+this script will take those symbols you have mapped, and write them to `symbols.txt`.
+
+use case: say you have changed the signature/name of a function. 
+now, your source file says `foo_Ful`, but symbols.txt says `bar__Fl`.
+objdiff allows you to map the `foo_Ful` in the target object to `bar__Fl` in the source object.
+this script allows you to replace `foo_Ful` with `bar__Fl` in `symbols.txt`.
+"""
+
+import json
+
+with open("./objdiff.json") as f:
+    objdiff_config = json.load(f)
+
+# lol python has types. it's typython. typescript all over again
+units: list = objdiff_config["units"]
+symbol_mappings_list = list(
+    filter(None, [unit.get("symbol_mappings") for unit in units])
+)
+
+symbol_mappings = {}
+for unit in units:
+    symbol_mapping = unit.get("symbol_mappings")
+    if symbol_mapping is None:
+        continue
+    symbol_mappings.update(symbol_mapping)
+    del unit['symbol_mappings']
+
+
+with open("./config/SOUE01/symbols.txt") as f:
+    symbols = f.readlines()
+
+for i, line in enumerate(symbols):
+    tokens = line.split()
+    old_symbol = tokens[0]
+
+    new_symbol = symbol_mappings.get(old_symbol)
+
+    if new_symbol is None:
+        continue
+
+    tokens[0] = new_symbol
+    symbols[i] = " ".join(tokens) + "\n"
+
+with open("./config/SOUE01/symbols.txt", "w") as f:
+    f.writelines(symbols)
+
+with open("./objdiff.json", "w") as f:
+    json.dump(objdiff_config, f)