1 files changed, 85 insertions, 0 deletions
diff --git a/contrib/llvm-project/lldb/source/Plugins/Process/FreeBSDKernel/ThreadFreeBSDKernel.cpp b/contrib/llvm-project/lldb/source/Plugins/Process/FreeBSDKernel/ThreadFreeBSDKernel.cpp
new file mode 100644
index 000000000000..124c65d587ff
--- /dev/null
+++ b/contrib/llvm-project/lldb/source/Plugins/Process/FreeBSDKernel/ThreadFreeBSDKernel.cpp
@@ -0,0 +1,85 @@
+//===-- ThreadFreeBSDKernel.cpp -------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "ThreadFreeBSDKernel.h"
+
+#include "lldb/Target/Unwind.h"
+#include "lldb/Utility/Log.h"
+
+#include "Plugins/Process/Utility/RegisterContextFreeBSD_i386.h"
+#include "Plugins/Process/Utility/RegisterContextFreeBSD_x86_64.h"
+#include "Plugins/Process/Utility/RegisterInfoPOSIX_arm64.h"
+#include "ProcessFreeBSDKernel.h"
+#include "RegisterContextFreeBSDKernel_arm64.h"
+#include "RegisterContextFreeBSDKernel_i386.h"
+#include "RegisterContextFreeBSDKernel_x86_64.h"
+#include "ThreadFreeBSDKernel.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+ThreadFreeBSDKernel::ThreadFreeBSDKernel(Process &process, lldb::tid_t tid,
+                                         lldb::addr_t pcb_addr)
+    : Thread(process, tid), m_pcb_addr(pcb_addr) {}
+
+ThreadFreeBSDKernel::~ThreadFreeBSDKernel() {}
+
+void ThreadFreeBSDKernel::RefreshStateAfterStop() {}
+
+lldb::RegisterContextSP ThreadFreeBSDKernel::GetRegisterContext() {
+  if (!m_reg_context_sp)
+    m_reg_context_sp = CreateRegisterContextForFrame(nullptr);
+  return m_reg_context_sp;
+}
+
+lldb::RegisterContextSP
+ThreadFreeBSDKernel::CreateRegisterContextForFrame(StackFrame *frame) {
+  RegisterContextSP reg_ctx_sp;
+  uint32_t concrete_frame_idx = 0;
+
+  if (frame)
+    concrete_frame_idx = frame->GetConcreteFrameIndex();
+
+  if (concrete_frame_idx == 0) {
+    if (m_thread_reg_ctx_sp)
+      return m_thread_reg_ctx_sp;
+
+    ProcessFreeBSDKernel *process =
+        static_cast<ProcessFreeBSDKernel *>(GetProcess().get());
+    ArchSpec arch = process->GetTarget().GetArchitecture();
+
+    switch (arch.GetMachine()) {
+    case llvm::Triple::aarch64:
+      m_thread_reg_ctx_sp =
+          std::make_shared<RegisterContextFreeBSDKernel_arm64>(
+              *this, std::make_unique<RegisterInfoPOSIX_arm64>(arch, 0),
+              m_pcb_addr);
+      break;
+    case llvm::Triple::x86:
+      m_thread_reg_ctx_sp =
+          std::make_shared<RegisterContextFreeBSDKernel_i386>(
+              *this, new RegisterContextFreeBSD_i386(arch), m_pcb_addr);
+      break;
+    case llvm::Triple::x86_64:
+      m_thread_reg_ctx_sp =
+          std::make_shared<RegisterContextFreeBSDKernel_x86_64>(
+              *this, new RegisterContextFreeBSD_x86_64(arch), m_pcb_addr);
+      break;
+    default:
+      assert(false && "Unsupported architecture passed to ThreadFreeBSDKernel");
+      break;
+    }
+
+    reg_ctx_sp = m_thread_reg_ctx_sp;
+  } else {
+    reg_ctx_sp = GetUnwinder().CreateRegisterContextForFrame(frame);
+  }
+  return reg_ctx_sp;
+}
+
+bool ThreadFreeBSDKernel::CalculateStopInfo() { return false; }