proj/test-return-values: Analyse call tree

proj/server/src/intercept/__init__.py

@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
+from __future__ import annotations
 from typing import Optional, TypedDict, NamedTuple, NotRequired, BinaryIO
 from socketserver import UnixStreamServer, StreamRequestHandler, ThreadingMixIn
 import os
@@ -41,14 +42,23 @@ class FunctionCallId:
     ret_addr: int
     obj_path: str
     rel_ret_addr: int
-    sym_name: Optional[str]
-    src_file_name: Optional[str]
-    src_line_num: Optional[int]
+    sym_name: Optional[str] = None
+    src_file_name: Optional[str] = None
+    src_line_num: Optional[int] = None
 
     @property
     def obj_name(self) -> str:
         return self.obj_path.split('/')[-1]
 
+    @staticmethod
+    def for_exit() -> FunctionCallId:
+        call_id = FunctionCallId()
+        call_id.func_name = 'exit'
+        call_id.obj_path = 'sys'
+        call_id.ret_addr = 0
+        call_id.rel_ret_addr = 0
+        return call_id
+
     @property
     def discriminator(self) -> str:
         discr = [f'{self.obj_name}+0x{self.rel_ret_addr:x}']
@@ -69,6 +79,9 @@ class FunctionCallId:
     def __str__(self) -> str:
         return self.func_name + ', ' + self.discriminator
 
+    def __repr__(self) -> str:
+        return f'<{self}>'
+
 
 class ThreadedUnixStreamServer(ThreadingMixIn, UnixStreamServer):
     pass