[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, 7 insertions, 3 deletions

diff --git a/lldb/source/Plugins/Process/scripted/ScriptedThread.cpp b/lldb/source/Plugins/Process/scripted/ScriptedThread.cpp
index 1adbd4e7799d..959b8c581885 100644
--- a/lldb/source/Plugins/Process/scripted/ScriptedThread.cpp
+++ b/lldb/source/Plugins/Process/scripted/ScriptedThread.cpp
@@ -198,13 +198,17 @@ std::shared_ptr<DynamicRegisterInfo> ScriptedThread::GetDynamicRegisterInfo() {
 
   if (!m_register_info_sp) {
     StructuredData::DictionarySP reg_info = GetInterface()->GetRegisterInfo();
+
+    Status error;
     if (!reg_info)
-      return nullptr;
+      return GetInterface()
+          ->ErrorWithMessage<std::shared_ptr<DynamicRegisterInfo>>(
+              LLVM_PRETTY_FUNCTION,
+              "Failed to get scripted thread registers info.", error,
+              LIBLLDB_LOG_THREAD);
 
     m_register_info_sp = std::make_shared<DynamicRegisterInfo>(
         *reg_info, m_scripted_process.GetTarget().GetArchitecture());
-    assert(m_register_info_sp->GetNumRegisters() > 0);
-    assert(m_register_info_sp->GetNumRegisterSets() > 0);
   }
 
   return m_register_info_sp;