GP-4620: Fix process termination (esp., on kill)

Ghidra/Debug/Debugger-agent-dbgeng/data/support/local-dbgeng.py

@@ -41,6 +41,10 @@ def main():
     from ghidradbg import commands as cmd
     from ghidradbg.util import dbg
 
+    # So that the user can re-enter by typing repl()
+    global repl
+    repl = cmd.repl
+
     cmd.ghidra_trace_connect(os.getenv('GHIDRA_TRACE_RMI_ADDR'))
     args = os.getenv('OPT_TARGET_ARGS')
     if args:

Ghidra/Debug/Debugger-agent-dbgeng/src/main/py/src/ghidradbg/commands.py

@@ -27,6 +27,7 @@ from ghidratrace.client import Client, Address, AddressRange, TraceObject
 from pybag import pydbg, userdbg, kerneldbg
 from pybag.dbgeng import core as DbgEng
 from pybag.dbgeng import exception
+from pybag.dbgeng.win32.kernel32 import STILL_ACTIVE
 
 from . import util, arch, methods, hooks
 from .dbgmodel.imodelobject import ModelObjectKind
@@ -841,6 +842,9 @@ def ghidra_trace_disassemble(address):
 
 @util.dbg.eng_thread
 def compute_proc_state(nproc=None):
+    exit_code = util.GetExitCode()
+    if exit_code is not None and exit_code != STILL_ACTIVE:
+        return 'TERMINATED'
     status = util.dbg._base._control.GetExecutionStatus()
     if status == DbgEng.DEBUG_STATUS_BREAK:
         return 'STOPPED'

Ghidra/Debug/Debugger-agent-dbgeng/src/main/py/src/ghidradbg/hooks.py

@@ -268,7 +268,8 @@ def on_process_selected():
 @log_errors
 def on_process_deleted(*args):
     # print("ON_PROCESS_DELETED")
-    proc = args[0]
+    exit_code = args[0]
+    proc = util.selected_process()
     on_exited(proc)
     if proc in PROC_STATE:
         del PROC_STATE[proc]