Vendor import of lldb trunk r256945:vendor/lldb/lldb-trunk-r256945

https://llvm.org/svn/llvm-project/lldb/trunk@256945

1 files changed, 132 insertions, 0 deletions

diff --git a/source/Plugins/Process/mach-core/ThreadMachCore.cpp b/source/Plugins/Process/mach-core/ThreadMachCore.cpp
new file mode 100644
index 000000000000..2720c910e4d1
--- /dev/null
+++ b/source/Plugins/Process/mach-core/ThreadMachCore.cpp
@@ -0,0 +1,132 @@
+//===-- ThreadMachCore.cpp --------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+
+#include "ThreadMachCore.h"
+
+#include "lldb/Utility/SafeMachO.h"
+
+#include "lldb/Core/ArchSpec.h"
+#include "lldb/Core/DataExtractor.h"
+#include "lldb/Core/StreamString.h"
+#include "lldb/Core/State.h"
+#include "lldb/Symbol/ObjectFile.h"
+#include "lldb/Target/Process.h"
+#include "lldb/Target/RegisterContext.h"
+#include "lldb/Target/StopInfo.h"
+#include "lldb/Target/Target.h"
+#include "lldb/Target/Unwind.h"
+#include "lldb/Breakpoint/Watchpoint.h"
+
+#include "ProcessMachCore.h"
+//#include "RegisterContextKDP_arm.h"
+//#include "RegisterContextKDP_i386.h"
+//#include "RegisterContextKDP_x86_64.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+//----------------------------------------------------------------------
+// Thread Registers
+//----------------------------------------------------------------------
+
+ThreadMachCore::ThreadMachCore (Process &process, lldb::tid_t tid) :
+    Thread(process, tid),
+    m_thread_name (),
+    m_dispatch_queue_name (),
+    m_thread_dispatch_qaddr (LLDB_INVALID_ADDRESS),
+    m_thread_reg_ctx_sp ()
+{
+}
+
+ThreadMachCore::~ThreadMachCore ()
+{
+    DestroyThread();
+}
+
+const char *
+ThreadMachCore::GetName ()
+{
+    if (m_thread_name.empty())
+        return NULL;
+    return m_thread_name.c_str();
+}
+
+void
+ThreadMachCore::RefreshStateAfterStop()
+{
+    // Invalidate all registers in our register context. We don't set "force" to
+    // true because the stop reply packet might have had some register values
+    // that were expedited and these will already be copied into the register
+    // context by the time this function gets called. The KDPRegisterContext
+    // class has been made smart enough to detect when it needs to invalidate
+    // which registers are valid by putting hooks in the register read and 
+    // register supply functions where they check the process stop ID and do
+    // the right thing.
+    const bool force = false;
+    GetRegisterContext()->InvalidateIfNeeded (force);
+}
+
+bool
+ThreadMachCore::ThreadIDIsValid (lldb::tid_t thread)
+{
+    return thread != 0;
+}
+
+lldb::RegisterContextSP
+ThreadMachCore::GetRegisterContext ()
+{
+    if (m_reg_context_sp.get() == NULL)
+        m_reg_context_sp = CreateRegisterContextForFrame (NULL);
+    return m_reg_context_sp;
+}
+
+lldb::RegisterContextSP
+ThreadMachCore::CreateRegisterContextForFrame (StackFrame *frame)
+{
+    lldb::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)
+        {
+            ProcessSP process_sp (GetProcess());
+            
+            ObjectFile *core_objfile = static_cast<ProcessMachCore *>(process_sp.get())->GetCoreObjectFile ();
+            if (core_objfile)
+                m_thread_reg_ctx_sp = core_objfile->GetThreadContextAtIndex (GetID(), *this);
+        }
+        reg_ctx_sp = m_thread_reg_ctx_sp;
+    }
+    else
+    {
+        Unwind *unwinder = GetUnwinder ();
+        if (unwinder)
+            reg_ctx_sp = unwinder->CreateRegisterContextForFrame (frame);
+    }
+    return reg_ctx_sp;
+}
+
+bool
+ThreadMachCore::CalculateStopInfo ()
+{
+    ProcessSP process_sp (GetProcess());
+    if (process_sp)
+    {
+        SetStopInfo(StopInfo::CreateStopReasonWithSignal (*this, SIGSTOP));
+        return true;
+    }
+    return false;
+}
+
+