| //===-- HistoryUnwind.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/lldb-private.h" |
| |
| #include "Plugins/Process/Utility/RegisterContextHistory.h" |
| #include "Plugins/Process/Utility/HistoryUnwind.h" |
| |
| #include "lldb/Target/StackFrame.h" |
| #include "lldb/Target/Thread.h" |
| #include "lldb/Target/Process.h" |
| #include "lldb/Target/Target.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| // Constructor |
| |
| HistoryUnwind::HistoryUnwind (Thread &thread, |
| std::vector<lldb::addr_t> pcs, |
| uint32_t stop_id, |
| bool stop_id_is_valid) : |
| Unwind (thread), |
| m_pcs (pcs), |
| m_stop_id (stop_id), |
| m_stop_id_is_valid (stop_id_is_valid) |
| { |
| } |
| |
| // Destructor |
| |
| HistoryUnwind::~HistoryUnwind () |
| { |
| } |
| |
| void |
| HistoryUnwind::DoClear () |
| { |
| Mutex::Locker locker(m_unwind_mutex); |
| m_pcs.clear(); |
| m_stop_id_is_valid = false; |
| } |
| |
| lldb::RegisterContextSP |
| HistoryUnwind::DoCreateRegisterContextForFrame (StackFrame *frame) |
| { |
| RegisterContextSP rctx; |
| if (frame) |
| { |
| addr_t pc = frame->GetFrameCodeAddress().GetLoadAddress (&frame->GetThread()->GetProcess()->GetTarget()); |
| if (pc != LLDB_INVALID_ADDRESS) |
| { |
| rctx.reset (new RegisterContextHistory (*frame->GetThread().get(), frame->GetConcreteFrameIndex(), |
| frame->GetThread()->GetProcess()->GetAddressByteSize(), pc)); |
| } |
| } |
| return rctx; |
| } |
| |
| bool |
| HistoryUnwind::DoGetFrameInfoAtIndex (uint32_t frame_idx, lldb::addr_t& cfa, lldb::addr_t& pc) |
| { |
| Mutex::Locker (m_unwind_mutex); // FIXME do not throw away the lock after we acquire it.. |
| if (frame_idx < m_pcs.size()) |
| { |
| cfa = frame_idx; |
| pc = m_pcs[frame_idx]; |
| return true; |
| } |
| return false; |
| } |
| |
| uint32_t |
| HistoryUnwind::DoGetFrameCount () |
| { |
| return m_pcs.size(); |
| } |