auto decompile more functions

tools/libdol2asm/data/function/ret.py

@@ -6,16 +6,39 @@ from .base import *
 
 @dataclass(eq=False)
 class ReturnFunction(Function):
-    return_value: str = None
-
-    def export_return_value(self):
-        return self.return_value
+    def export_return_value(self, symbol_table):
+        assert False
 
     async def export_function_body(self, exporter, builder: AsyncBuilder):
-        return_value = self.export_return_value()
+        return_value = self.export_return_value(exporter.gst)
         await builder.write(f" {{")
         if return_value:
             await builder.write(f"\treturn {return_value};")
         else:
             await builder.write(f"\t/* empty function */")
         await builder.write(f"}}")
+
+@dataclass(eq=False)
+class CustomReturnFunction(ReturnFunction):
+    return_value: str = None
+
+    def export_return_value(self, symbol_table):
+        return self.return_value
+
+@dataclass(eq=False)
+class SymbolReturnFunction(ReturnFunction):
+    symbol_addr: int = 0
+    load_or_reference: bool = True
+
+    def gather_references(self, context, valid_range):
+        self.references = set([ self.symbol_addr ])
+
+    def export_return_value(self, symbol_table):
+        symbol = symbol_table[-1, self.symbol_addr]
+        assert symbol
+        name = symbol.cpp_reference(self, self.symbol_addr)
+        type = PointerType(self.return_type)
+        dereference = ""
+        if self.load_or_reference:
+            dereference = "*"
+        return f"{dereference}({type.type()})({name})"