[Lldb-commits] [lldb] [lldb] Handle an empty SBMemoryRegionInfo from scripted process (PR #115963)
Med Ismail Bennani via lldb-commits
lldb-commits at lists.llvm.org
Tue Nov 12 16:14:09 PST 2024
================
@@ -0,0 +1,137 @@
+import os, struct, signal
+
+from typing import Any, Dict
+
+import lldb
+from lldb.plugins.scripted_process import ScriptedProcess
+from lldb.plugins.scripted_process import ScriptedThread
+
+
+class DummyStopHook:
+ def __init__(self, target, args):
+ self.target = target
+ self.args = args
+
+ def handle_stop(self, exe_ctx, stream):
+ print("My DummyStopHook triggered. Printing args: \n%s" % self.args)
+ sp = exe_ctx.process.GetScriptedImplementation()
+ sp.handled_stop = True
+
+
+class DummyScriptedProcess(ScriptedProcess):
+ memory = None
+
+ def __init__(self, exe_ctx: lldb.SBExecutionContext, args: lldb.SBStructuredData):
+ super().__init__(exe_ctx, args)
+ self.threads[0] = DummyScriptedThread(self, None)
+ self.memory = {}
+ addr = 0x500000000
+ debugger = self.target.GetDebugger()
+ index = debugger.GetIndexOfTarget(self.target)
+ self.memory[addr] = "Hello, target " + str(index)
+ self.handled_stop = False
+
+ def read_memory_at_address(
+ self, addr: int, size: int, error: lldb.SBError
+ ) -> lldb.SBData:
+ data = lldb.SBData().CreateDataFromCString(
+ self.target.GetByteOrder(), self.target.GetCodeByteSize(), self.memory[addr]
+ )
+
+ return data
+
+ def get_memory_region_containing_address(
+ self, addr: int
+ ) -> lldb.SBMemoryRegionInfo:
+ return lldb.SBMemoryRegionInfo()
+
+ def write_memory_at_address(self, addr, data, error):
+ self.memory[addr] = data.GetString(error, 0)
+ return len(self.memory[addr]) + 1
+
+ def get_loaded_images(self):
+ return self.loaded_images
+
+ def get_process_id(self) -> int:
+ return 42
+
+ def should_stop(self) -> bool:
+ return True
+
+ def is_alive(self) -> bool:
+ return True
+
+ def get_scripted_thread_plugin(self):
+ return DummyScriptedThread.__module__ + "." + DummyScriptedThread.__name__
+
+ def my_super_secret_method(self):
+ if hasattr(self, "my_super_secret_member"):
+ return self.my_super_secret_member
+ else:
+ return None
+
+
+class DummyScriptedThread(ScriptedThread):
+ def __init__(self, process, args):
+ super().__init__(process, args)
+ self.frames.append({"pc": 0x0100001B00})
+
+ def get_thread_id(self) -> int:
+ return 0x19
+
+ def get_name(self) -> str:
+ return DummyScriptedThread.__name__ + ".thread-1"
+
+ def get_state(self) -> int:
+ return lldb.eStateStopped
+
+ def get_stop_reason(self) -> Dict[str, Any]:
+ return {"type": lldb.eStopReasonTrace, "data": {}}
+
+ def get_register_context(self) -> str:
+ return struct.pack(
+ "21Q",
+ 1,
+ 2,
+ 3,
+ 4,
+ 5,
+ 6,
+ 7,
+ 8,
+ 9,
+ 10,
+ 11,
+ 12,
+ 13,
+ 14,
+ 15,
+ 16,
+ 17,
+ 18,
+ 19,
+ 20,
+ 21,
+ )
+
+
+def __lldb_init_module(debugger, dict):
+ # This is used when loading the script in an interactive debug session to
+ # automatically, register the stop-hook and launch the scripted process.
+ if not "SKIP_SCRIPTED_PROCESS_LAUNCH" in os.environ:
+ debugger.HandleCommand(
+ "target stop-hook add -k first -v 1 -k second -v 2 -P %s.%s"
+ % (__name__, DummyStopHook.__name__)
+ )
+ debugger.HandleCommand(
+ "process launch -C %s.%s" % (__name__, DummyScriptedProcess.__name__)
+ )
+ else:
+ print(
+ "Name of the class that will manage the scripted process: '%s.%s'"
+ % (__name__, DummyScriptedProcess.__name__)
+ )
+ print(
+ "Name of the class that will manage the stop-hook: '%s.%s'"
+ % (__name__, DummyStopHook.__name__)
+ )
----------------
medismailben wrote:
Or this
https://github.com/llvm/llvm-project/pull/115963
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