Initial import of lldb

Change-Id: Ib244e837bee349effa12b2ff6ffffbe3d730e929

external/bsd/llvm/dist/lldb/source/Target/ThreadPlanRunToAddress.cpp

@@ -0,0 +1,268 @@
+//===-- ThreadPlanRunToAddress.cpp ------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Target/ThreadPlanRunToAddress.h"
+
+// C Includes
+// C++ Includes
+// Other libraries and framework includes
+// Project includes
+#include "lldb/lldb-private-log.h"
+#include "lldb/Core/Log.h"
+#include "lldb/Core/Stream.h"
+#include "lldb/Target/Target.h"
+#include "lldb/Target/Process.h"
+#include "lldb/Target/Thread.h"
+#include "lldb/Target/RegisterContext.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+//----------------------------------------------------------------------
+// ThreadPlanRunToAddress: Continue plan
+//----------------------------------------------------------------------
+
+ThreadPlanRunToAddress::ThreadPlanRunToAddress
+(
+    Thread &thread,
+    Address &address,
+    bool stop_others
+) :
+    ThreadPlan (ThreadPlan::eKindRunToAddress, "Run to address plan", thread, eVoteNoOpinion, eVoteNoOpinion),
+    m_stop_others (stop_others),
+    m_addresses (),
+    m_break_ids ()
+{
+    m_addresses.push_back (address.GetOpcodeLoadAddress (m_thread.CalculateTarget().get()));
+    SetInitialBreakpoints();
+}
+
+ThreadPlanRunToAddress::ThreadPlanRunToAddress
+(
+    Thread &thread,
+    lldb::addr_t address,
+    bool stop_others
+) :
+    ThreadPlan (ThreadPlan::eKindRunToAddress, "Run to address plan", thread, eVoteNoOpinion, eVoteNoOpinion),
+    m_stop_others (stop_others),
+    m_addresses (),
+    m_break_ids ()
+{
+    m_addresses.push_back(m_thread.CalculateTarget()->GetOpcodeLoadAddress(address));
+    SetInitialBreakpoints();
+}
+
+ThreadPlanRunToAddress::ThreadPlanRunToAddress
+(
+    Thread &thread,
+    const std::vector<lldb::addr_t> &addresses,
+    bool stop_others
+) :
+    ThreadPlan (ThreadPlan::eKindRunToAddress, "Run to address plan", thread, eVoteNoOpinion, eVoteNoOpinion),
+    m_stop_others (stop_others),
+    m_addresses (addresses),
+    m_break_ids ()
+{
+    // Convert all addressses into opcode addresses to make sure we set 
+    // breakpoints at the correct address.
+    Target &target = thread.GetProcess()->GetTarget();
+    std::vector<lldb::addr_t>::iterator pos, end = m_addresses.end();
+    for (pos = m_addresses.begin(); pos != end; ++pos)
+        *pos = target.GetOpcodeLoadAddress (*pos);
+
+    SetInitialBreakpoints();
+}
+
+void
+ThreadPlanRunToAddress::SetInitialBreakpoints ()
+{
+    size_t num_addresses = m_addresses.size();
+    m_break_ids.resize(num_addresses);
+    
+    for (size_t i = 0; i < num_addresses; i++)
+    {
+        Breakpoint *breakpoint;
+        breakpoint = m_thread.CalculateTarget()->CreateBreakpoint (m_addresses[i], true, false).get();
+        if (breakpoint != NULL)
+        {
+            m_break_ids[i] = breakpoint->GetID();
+            breakpoint->SetThreadID(m_thread.GetID());
+            breakpoint->SetBreakpointKind("run-to-address");
+        }
+    }
+}
+
+ThreadPlanRunToAddress::~ThreadPlanRunToAddress ()
+{
+    size_t num_break_ids = m_break_ids.size();
+    for (size_t i = 0; i <  num_break_ids; i++)
+    {
+        m_thread.CalculateTarget()->RemoveBreakpointByID (m_break_ids[i]);
+    }
+}
+
+void
+ThreadPlanRunToAddress::GetDescription (Stream *s, lldb::DescriptionLevel level)
+{
+    size_t num_addresses = m_addresses.size();
+    
+    if (level == lldb::eDescriptionLevelBrief)
+    {
+        if (num_addresses == 0)
+        {
+            s->Printf ("run to address with no addresses given.");
+            return;
+        }
+        else if (num_addresses == 1)
+            s->Printf ("run to address: ");
+        else
+            s->Printf ("run to addresses: ");
+            
+        for (size_t i = 0; i < num_addresses; i++)
+        {
+            s->Address (m_addresses[i], sizeof (addr_t));
+            s->Printf(" ");
+        }
+    }
+    else
+    {
+        if (num_addresses == 0)
+        {
+            s->Printf ("run to address with no addresses given.");
+            return;
+        }
+        else if (num_addresses == 1)
+            s->Printf ("Run to address: ");
+        else
+        {
+            s->Printf ("Run to addresses: ");
+        }
+            
+        for (size_t i = 0; i < num_addresses; i++)
+        {
+            if (num_addresses > 1)
+            {
+                s->Printf("\n");
+                s->Indent();
+            }
+            
+            s->Address(m_addresses[i], sizeof (addr_t));
+            s->Printf (" using breakpoint: %d - ", m_break_ids[i]);
+            Breakpoint *breakpoint = m_thread.CalculateTarget()->GetBreakpointByID (m_break_ids[i]).get();
+            if (breakpoint)
+                breakpoint->Dump (s);
+            else
+                s->Printf ("but the breakpoint has been deleted.");
+        }
+    }
+}
+
+bool
+ThreadPlanRunToAddress::ValidatePlan (Stream *error)
+{
+    // If we couldn't set the breakpoint for some reason, then this won't
+    // work.
+    bool all_bps_good = true;
+    size_t num_break_ids = m_break_ids.size();
+        
+    for (size_t i = 0; i < num_break_ids; i++)
+    {
+        if (m_break_ids[i] == LLDB_INVALID_BREAK_ID)
+        {
+            all_bps_good = false;
+            if (error)
+            {
+                error->Printf ("Could not set breakpoint for address: ");
+                error->Address (m_addresses[i], sizeof (addr_t));
+                error->Printf ("\n");
+            }
+        }
+    }
+    return all_bps_good;
+}
+
+bool
+ThreadPlanRunToAddress::DoPlanExplainsStop (Event *event_ptr)
+{
+    return AtOurAddress();
+}
+
+bool
+ThreadPlanRunToAddress::ShouldStop (Event *event_ptr)
+{
+    return false;
+}
+
+bool
+ThreadPlanRunToAddress::StopOthers ()
+{
+    return m_stop_others;
+}
+
+void
+ThreadPlanRunToAddress::SetStopOthers (bool new_value)
+{
+    m_stop_others = new_value;
+}
+
+StateType
+ThreadPlanRunToAddress::GetPlanRunState ()
+{
+    return eStateRunning;
+}
+
+bool
+ThreadPlanRunToAddress::WillStop ()
+{
+    return true;
+}
+
+bool
+ThreadPlanRunToAddress::MischiefManaged ()
+{
+    Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP));
+
+    if (AtOurAddress())
+    {
+        // Remove the breakpoint
+        size_t num_break_ids = m_break_ids.size();
+        
+        for (size_t i = 0; i < num_break_ids; i++)
+        {
+            if (m_break_ids[i] != LLDB_INVALID_BREAK_ID)
+            {
+                m_thread.CalculateTarget()->RemoveBreakpointByID (m_break_ids[i]);
+                m_break_ids[i] = LLDB_INVALID_BREAK_ID;
+            }
+        }
+        if (log)
+            log->Printf("Completed run to address plan.");
+        ThreadPlan::MischiefManaged ();
+        return true;
+    }
+    else
+        return false;
+}
+
+bool
+ThreadPlanRunToAddress::AtOurAddress ()
+{
+    lldb::addr_t current_address = m_thread.GetRegisterContext()->GetPC();
+    bool found_it = false;
+    size_t num_addresses = m_addresses.size();
+    for (size_t i = 0; i < num_addresses; i++)
+    {
+        if (m_addresses[i] == current_address)
+        {
+            found_it = true;
+            break;
+        }
+    }
+    return found_it;
+}