[lldb/plugins] Add arm64(e) support to ScriptedProcess

This patch adds support for arm64(e) targets to ScriptedProcess, by
providing the `DynamicRegisterInfo` to the base `lldb.ScriptedThread` class.
This allows create and debugging ScriptedProcess on Apple Silicon
hardware as well as Apple mobile devices.

It also replace the C++ asserts on `ScriptedThread::GetDynamicRegisterInfo`
by some error logging, re-enables `TestScriptedProcess` for arm64
Darwin platforms and adds a new invalid Scripted Thread test.

rdar://85892451

Differential Revision: https://reviews.llvm.org/D114923

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/lldb/source/Plugins/Process/scripted/ScriptedProcess.cpp b/lldb/source/Plugins/Process/scripted/ScriptedProcess.cpp
index c1b7294a7f58..cb21a3e7e65f 100644
--- a/lldb/source/Plugins/Process/scripted/ScriptedProcess.cpp
+++ b/lldb/source/Plugins/Process/scripted/ScriptedProcess.cpp
@@ -311,6 +311,11 @@ bool ScriptedProcess::DoUpdateThreadList(ThreadList &old_thread_list,
     return GetInterface().ErrorWithMessage<bool>(LLVM_PRETTY_FUNCTION,
                                                  error.AsCString(), error);
 
+  RegisterContextSP reg_ctx_sp = thread_sp->GetRegisterContext();
+  if (!reg_ctx_sp)
+    return GetInterface().ErrorWithMessage<bool>(
+        LLVM_PRETTY_FUNCTION, "Invalid Register Context", error);
+
   new_thread_list.AddThread(thread_sp);
 
   return new_thread_list.GetSize(false) > 0;