Import lldb as of SVN r188801

(A number of files not required for the FreeBSD build have been removed.)

Sponsored by:	DARPA, AFRL

1 files changed, 214 insertions, 0 deletions

diff --git a/source/Plugins/Process/gdb-remote/ThreadGDBRemote.cpp b/source/Plugins/Process/gdb-remote/ThreadGDBRemote.cpp
new file mode 100644
index 000000000000..38fb84d66ef3
--- /dev/null
+++ b/source/Plugins/Process/gdb-remote/ThreadGDBRemote.cpp
@@ -0,0 +1,214 @@
+//===-- ThreadGDBRemote.cpp -------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+
+#include "ThreadGDBRemote.h"
+
+#include "lldb/Core/ArchSpec.h"
+#include "lldb/Core/DataExtractor.h"
+#include "lldb/Core/StreamString.h"
+#include "lldb/Core/State.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 "ProcessGDBRemote.h"
+#include "ProcessGDBRemoteLog.h"
+#include "Utility/StringExtractorGDBRemote.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+//----------------------------------------------------------------------
+// Thread Registers
+//----------------------------------------------------------------------
+
+ThreadGDBRemote::ThreadGDBRemote (Process &process, lldb::tid_t tid) :
+    Thread(process, tid),
+    m_thread_name (),
+    m_dispatch_queue_name (),
+    m_thread_dispatch_qaddr (LLDB_INVALID_ADDRESS)
+{
+    ProcessGDBRemoteLog::LogIf(GDBR_LOG_THREAD, "%p: ThreadGDBRemote::ThreadGDBRemote (pid = %i, tid = 0x%4.4x)", 
+                               this, 
+                               process.GetID(),
+                               GetID());
+}
+
+ThreadGDBRemote::~ThreadGDBRemote ()
+{
+    ProcessSP process_sp(GetProcess());
+    ProcessGDBRemoteLog::LogIf(GDBR_LOG_THREAD, "%p: ThreadGDBRemote::~ThreadGDBRemote (pid = %i, tid = 0x%4.4x)", 
+                               this, 
+                               process_sp ? process_sp->GetID() : LLDB_INVALID_PROCESS_ID, 
+                               GetID());
+    DestroyThread();
+}
+
+const char *
+ThreadGDBRemote::GetName ()
+{
+    if (m_thread_name.empty())
+        return NULL;
+    return m_thread_name.c_str();
+}
+
+
+const char *
+ThreadGDBRemote::GetQueueName ()
+{
+    // Always re-fetch the dispatch queue name since it can change
+
+    if (m_thread_dispatch_qaddr != 0 || m_thread_dispatch_qaddr != LLDB_INVALID_ADDRESS)
+    {
+        ProcessSP process_sp (GetProcess());
+        if (process_sp)
+        {
+            ProcessGDBRemote *gdb_process = static_cast<ProcessGDBRemote *>(process_sp.get());
+            return gdb_process->GetDispatchQueueNameForThread (m_thread_dispatch_qaddr, m_dispatch_queue_name);
+        }
+    }
+    return NULL;
+}
+
+void
+ThreadGDBRemote::WillResume (StateType resume_state)
+{
+    int signo = GetResumeSignal();
+    const lldb::user_id_t tid = GetProtocolID();
+    Log *log(lldb_private::GetLogIfAnyCategoriesSet (GDBR_LOG_THREAD));
+    if (log)
+        log->Printf ("Resuming thread: %4.4" PRIx64 " with state: %s.", tid, StateAsCString(resume_state));
+
+    ProcessSP process_sp (GetProcess());
+    if (process_sp)
+    {
+        ProcessGDBRemote *gdb_process = static_cast<ProcessGDBRemote *>(process_sp.get());
+        switch (resume_state)
+        {
+        case eStateSuspended:
+        case eStateStopped:
+            // Don't append anything for threads that should stay stopped.
+            break;
+
+        case eStateRunning:
+            if (gdb_process->GetUnixSignals().SignalIsValid (signo))
+                gdb_process->m_continue_C_tids.push_back(std::make_pair(tid, signo));
+            else
+                gdb_process->m_continue_c_tids.push_back(tid);
+            break;
+
+        case eStateStepping:
+            if (gdb_process->GetUnixSignals().SignalIsValid (signo))
+                gdb_process->m_continue_S_tids.push_back(std::make_pair(tid, signo));
+            else
+                gdb_process->m_continue_s_tids.push_back(tid);
+            break;
+
+        default:
+            break;
+        }
+    }
+}
+
+void
+ThreadGDBRemote::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 GDBRemoteRegisterContext
+    // 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
+ThreadGDBRemote::ThreadIDIsValid (lldb::tid_t thread)
+{
+    return thread != 0;
+}
+
+void
+ThreadGDBRemote::Dump(Log *log, uint32_t index)
+{
+}
+
+
+bool
+ThreadGDBRemote::ShouldStop (bool &step_more)
+{
+    return true;
+}
+lldb::RegisterContextSP
+ThreadGDBRemote::GetRegisterContext ()
+{
+    if (m_reg_context_sp.get() == NULL)
+        m_reg_context_sp = CreateRegisterContextForFrame (NULL);
+    return m_reg_context_sp;
+}
+
+lldb::RegisterContextSP
+ThreadGDBRemote::CreateRegisterContextForFrame (StackFrame *frame)
+{
+    lldb::RegisterContextSP reg_ctx_sp;
+    const bool read_all_registers_at_once = false;
+    uint32_t concrete_frame_idx = 0;
+    
+    if (frame)
+        concrete_frame_idx = frame->GetConcreteFrameIndex ();
+
+    
+    if (concrete_frame_idx == 0)
+    {
+        ProcessSP process_sp (GetProcess());
+        if (process_sp)
+        {
+            ProcessGDBRemote *gdb_process = static_cast<ProcessGDBRemote *>(process_sp.get());
+            reg_ctx_sp.reset (new GDBRemoteRegisterContext (*this, concrete_frame_idx, gdb_process->m_register_info, read_all_registers_at_once));
+        }
+    }
+    else
+    {
+        Unwind *unwinder = GetUnwinder ();
+        if (unwinder)
+            reg_ctx_sp = unwinder->CreateRegisterContextForFrame (frame);
+    }
+    return reg_ctx_sp;
+}
+
+bool
+ThreadGDBRemote::PrivateSetRegisterValue (uint32_t reg, StringExtractor &response)
+{
+    GDBRemoteRegisterContext *gdb_reg_ctx = static_cast<GDBRemoteRegisterContext *>(GetRegisterContext ().get());
+    assert (gdb_reg_ctx);
+    return gdb_reg_ctx->PrivateSetRegisterValue (reg, response);
+}
+
+bool
+ThreadGDBRemote::CalculateStopInfo ()
+{
+    ProcessSP process_sp (GetProcess());
+    if (process_sp)
+    {
+        StringExtractorGDBRemote stop_packet;
+        ProcessGDBRemote *gdb_process = static_cast<ProcessGDBRemote *>(process_sp.get());
+        if (gdb_process->GetGDBRemote().GetThreadStopInfo(GetProtocolID(), stop_packet))
+            return gdb_process->SetThreadStopInfo (stop_packet) == eStateStopped;
+    }
+    return false;
+}
+
+