Revert "[lldb] Move PassthroughScriptedProcess to `lldb.scripted_process` module"

This reverts commit 273a2d337f675f3ee050f281b1fecc3e806b9a3c, since it
might be the cause for `TestStackCoreScriptedProcess` and
`TestInteractiveScriptedProcess` failures on GreenDragon:

https://green.lab.llvm.org/green/job/lldb-cmake/55460/`

1 files changed, 192 insertions, 20 deletions

diff --git a/lldb/test/API/functionalities/interactive_scripted_process/interactive_scripted_process.py b/lldb/test/API/functionalities/interactive_scripted_process/interactive_scripted_process.py
index 61ba3fc2c7b5..c97909906679 100644
--- a/lldb/test/API/functionalities/interactive_scripted_process/interactive_scripted_process.py
+++ b/lldb/test/API/functionalities/interactive_scripted_process/interactive_scripted_process.py
@@ -12,10 +12,102 @@ from threading import Thread
 from typing import Any, Dict
 
 import lldb
-from lldb.plugins.scripted_process import PassthroughScriptedProcess
-from lldb.plugins.scripted_process import PassthroughScriptedThread
+from lldb.plugins.scripted_process import ScriptedProcess
+from lldb.plugins.scripted_process import ScriptedThread
 
-class MultiplexedScriptedProcess(PassthroughScriptedProcess):
+
+class PassthruScriptedProcess(ScriptedProcess):
+    driving_target = None
+    driving_process = None
+
+    def __init__(
+        self,
+        exe_ctx: lldb.SBExecutionContext,
+        args: lldb.SBStructuredData,
+        launched_driving_process: bool = True,
+    ):
+        super().__init__(exe_ctx, args)
+
+        self.driving_target = None
+        self.driving_process = None
+
+        self.driving_target_idx = args.GetValueForKey("driving_target_idx")
+        if self.driving_target_idx and self.driving_target_idx.IsValid():
+            if self.driving_target_idx.GetType() == lldb.eStructuredDataTypeInteger:
+                idx = self.driving_target_idx.GetIntegerValue(42)
+            if self.driving_target_idx.GetType() == lldb.eStructuredDataTypeString:
+                idx = int(self.driving_target_idx.GetStringValue(100))
+            self.driving_target = self.target.GetDebugger().GetTargetAtIndex(idx)
+
+            if launched_driving_process:
+                self.driving_process = self.driving_target.GetProcess()
+                for driving_thread in self.driving_process:
+                    structured_data = lldb.SBStructuredData()
+                    structured_data.SetFromJSON(
+                        json.dumps(
+                            {
+                                "driving_target_idx": idx,
+                                "thread_idx": driving_thread.GetIndexID(),
+                            }
+                        )
+                    )
+
+                    self.threads[driving_thread.GetThreadID()] = PassthruScriptedThread(
+                        self, structured_data
+                    )
+
+                for module in self.driving_target.modules:
+                    path = module.file.fullpath
+                    load_addr = module.GetObjectFileHeaderAddress().GetLoadAddress(
+                        self.driving_target
+                    )
+                    self.loaded_images.append({"path": path, "load_addr": load_addr})
+
+    def get_memory_region_containing_address(
+        self, addr: int
+    ) -> lldb.SBMemoryRegionInfo:
+        mem_region = lldb.SBMemoryRegionInfo()
+        error = self.driving_process.GetMemoryRegionInfo(addr, mem_region)
+        if error.Fail():
+            return None
+        return mem_region
+
+    def read_memory_at_address(
+        self, addr: int, size: int, error: lldb.SBError
+    ) -> lldb.SBData:
+        data = lldb.SBData()
+        bytes_read = self.driving_process.ReadMemory(addr, size, error)
+
+        if error.Fail():
+            return data
+
+        data.SetDataWithOwnership(
+            error,
+            bytes_read,
+            self.driving_target.GetByteOrder(),
+            self.driving_target.GetAddressByteSize(),
+        )
+
+        return data
+
+    def write_memory_at_address(
+        self, addr: int, data: lldb.SBData, error: lldb.SBError
+    ) -> int:
+        return self.driving_process.WriteMemory(
+            addr, bytearray(data.uint8.all()), error
+        )
+
+    def get_process_id(self) -> int:
+        return 42
+
+    def is_alive(self) -> bool:
+        return True
+
+    def get_scripted_thread_plugin(self) -> str:
+        return f"{PassthruScriptedThread.__module__}.{PassthruScriptedThread.__name__}"
+
+
+class MultiplexedScriptedProcess(PassthruScriptedProcess):
     def __init__(self, exe_ctx: lldb.SBExecutionContext, args: lldb.SBStructuredData):
         super().__init__(exe_ctx, args)
         self.multiplexer = None
@@ -23,11 +115,11 @@ class MultiplexedScriptedProcess(PassthroughScriptedProcess):
             parity = args.GetValueForKey("parity")
             # TODO: Change to Walrus operator (:=) with oneline if assignment
             # Requires python 3.8
-            val = parity.GetUnsignedIntegerValue()
+            val = extract_value_from_structured_data(parity, 0)
             if val is not None:
                 self.parity = val
 
-            # Turn PassthroughScriptedThread into MultiplexedScriptedThread
+            # Turn PassThruScriptedThread into MultiplexedScriptedThread
             for thread in self.threads.values():
                 thread.__class__ = MultiplexedScriptedThread
 
@@ -52,7 +144,7 @@ class MultiplexedScriptedProcess(PassthroughScriptedProcess):
         if not self.multiplexer:
             return super().get_threads_info()
         filtered_threads = self.multiplexer.get_threads_info(pid=self.get_process_id())
-        # Update the filtered thread class from PassthroughScriptedThread to MultiplexedScriptedThread
+        # Update the filtered thread class from PassthruScriptedThread to MultiplexedScriptedThread
         return dict(
             map(
                 lambda pair: (pair[0], MultiplexedScriptedThread(pair[1])),
@@ -68,13 +160,92 @@ class MultiplexedScriptedProcess(PassthroughScriptedProcess):
     def get_scripted_thread_plugin(self) -> str:
         return f"{MultiplexedScriptedThread.__module__}.{MultiplexedScriptedThread.__name__}"
 
-class MultiplexedScriptedThread(PassthroughScriptedThread):
+
+class PassthruScriptedThread(ScriptedThread):
+    def __init__(self, process, args):
+        super().__init__(process, args)
+        driving_target_idx = args.GetValueForKey("driving_target_idx")
+        thread_idx = args.GetValueForKey("thread_idx")
+
+        # TODO: Change to Walrus operator (:=) with oneline if assignment
+        # Requires python 3.8
+        val = extract_value_from_structured_data(thread_idx, 0)
+        if val is not None:
+            self.idx = val
+
+        self.driving_target = None
+        self.driving_process = None
+        self.driving_thread = None
+
+        # TODO: Change to Walrus operator (:=) with oneline if assignment
+        # Requires python 3.8
+        val = extract_value_from_structured_data(driving_target_idx, 42)
+        if val is not None:
+            self.driving_target = self.target.GetDebugger().GetTargetAtIndex(val)
+            self.driving_process = self.driving_target.GetProcess()
+            self.driving_thread = self.driving_process.GetThreadByIndexID(self.idx)
+
+        if self.driving_thread:
+            self.id = self.driving_thread.GetThreadID()
+
+    def get_thread_id(self) -> int:
+        return self.id
+
+    def get_name(self) -> str:
+        return f"{PassthruScriptedThread.__name__}.thread-{self.idx}"
+
+    def get_stop_reason(self) -> Dict[str, Any]:
+        stop_reason = {"type": lldb.eStopReasonInvalid, "data": {}}
+
+        if (
+            self.driving_thread
+            and self.driving_thread.IsValid()
+            and self.get_thread_id() == self.driving_thread.GetThreadID()
+        ):
+            stop_reason["type"] = lldb.eStopReasonNone
+
+            if self.driving_thread.GetStopReason() != lldb.eStopReasonNone:
+                if "arm64" in self.scripted_process.arch:
+                    stop_reason["type"] = lldb.eStopReasonException
+                    stop_reason["data"][
+                        "desc"
+                    ] = self.driving_thread.GetStopDescription(100)
+                elif self.scripted_process.arch == "x86_64":
+                    stop_reason["type"] = lldb.eStopReasonSignal
+                    stop_reason["data"]["signal"] = signal.SIGTRAP
+                else:
+                    stop_reason["type"] = self.driving_thread.GetStopReason()
+
+        return stop_reason
+
+    def get_register_context(self) -> str:
+        if not self.driving_thread or self.driving_thread.GetNumFrames() == 0:
+            return None
+        frame = self.driving_thread.GetFrameAtIndex(0)
+
+        GPRs = None
+        registerSet = frame.registers  # Returns an SBValueList.
+        for regs in registerSet:
+            if "general purpose" in regs.name.lower():
+                GPRs = regs
+                break
+
+        if not GPRs:
+            return None
+
+        for reg in GPRs:
+            self.register_ctx[reg.name] = int(reg.value, base=16)
+
+        return struct.pack(f"{len(self.register_ctx)}Q", *self.register_ctx.values())
+
+
+class MultiplexedScriptedThread(PassthruScriptedThread):
     def get_name(self) -> str:
         parity = "Odd" if self.scripted_process.parity % 2 else "Even"
         return f"{parity}{MultiplexedScriptedThread.__name__}.thread-{self.idx}"
 
 
-class MultiplexerScriptedProcess(PassthroughScriptedProcess):
+class MultiplexerScriptedProcess(PassthruScriptedProcess):
     listener = None
     multiplexed_processes = None
 
@@ -83,9 +254,9 @@ class MultiplexerScriptedProcess(PassthroughScriptedProcess):
             # Update multiplexer process
             log("Updating interactive scripted process threads")
             dbg = self.driving_target.GetDebugger()
-            new_driving_thread_ids = []
+            log("Clearing interactive scripted process threads")
+            self.threads.clear()
             for driving_thread in self.driving_process:
-                new_driving_thread_ids.append(driving_thread.id)
                 log(f"{len(self.threads)} New thread {hex(driving_thread.id)}")
                 structured_data = lldb.SBStructuredData()
                 structured_data.SetFromJSON(
@@ -99,17 +270,10 @@ class MultiplexerScriptedProcess(PassthroughScriptedProcess):
                     )
                 )
 
-                self.threads[driving_thread.id] = PassthroughScriptedThread(
+                self.threads[driving_thread.GetThreadID()] = PassthruScriptedThread(
                     self, structured_data
                 )
 
-            for thread_id in self.threads:
-                if thread_id not in new_driving_thread_ids:
-                    log(f"Removing old thread {hex(thread_id)}")
-                    del self.threads[thread_id]
-
-            print(f"New thread count: {len(self.threads)}")
-
             mux_process = self.target.GetProcess()
             mux_process.ForceScriptedState(lldb.eStateRunning)
             mux_process.ForceScriptedState(lldb.eStateStopped)
@@ -120,8 +284,6 @@ class MultiplexerScriptedProcess(PassthroughScriptedProcess):
 
         event = lldb.SBEvent()
         while True:
-            if not self.driving_process:
-                continue
             if self.listener.WaitForEvent(1, event):
                 event_mask = event.GetType()
                 if event_mask & lldb.SBProcess.eBroadcastBitStateChanged:
@@ -312,6 +474,16 @@ def duplicate_target(driving_target):
     debugger = driving_target.GetDebugger()
     return debugger.CreateTargetWithFileAndTargetTriple(exe, triple)
 
+
+def extract_value_from_structured_data(data, default_val):
+    if data and data.IsValid():
+        if data.GetType() == lldb.eStructuredDataTypeInteger:
+            return data.GetIntegerValue(default_val)
+        if data.GetType() == lldb.eStructuredDataTypeString:
+            return int(data.GetStringValue(100))
+    return default_val
+
+
 def create_mux_process(debugger, command, exe_ctx, result, dict):
     if not debugger.GetNumTargets() > 0:
         return result.SetError(