Jason Molenda | 02706c3 | 2013-11-08 04:59:54 +0000 | [diff] [blame] | 1 | //===-- HistoryUnwind.cpp ---------------------------------------*- C++ -*-===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #include "lldb/lldb-private.h" |
| 11 | |
| 12 | #include "Plugins/Process/Utility/RegisterContextHistory.h" |
| 13 | #include "Plugins/Process/Utility/HistoryUnwind.h" |
| 14 | |
| 15 | #include "lldb/Target/StackFrame.h" |
| 16 | #include "lldb/Target/Thread.h" |
| 17 | #include "lldb/Target/Process.h" |
| 18 | #include "lldb/Target/Target.h" |
| 19 | |
| 20 | using namespace lldb; |
| 21 | using namespace lldb_private; |
| 22 | |
Jason Molenda | a8ff543 | 2014-03-06 06:31:18 +0000 | [diff] [blame] | 23 | // Constructor |
| 24 | |
Jason Molenda | 02706c3 | 2013-11-08 04:59:54 +0000 | [diff] [blame] | 25 | HistoryUnwind::HistoryUnwind (Thread &thread, |
| 26 | std::vector<lldb::addr_t> pcs, |
Jason Molenda | 02706c3 | 2013-11-08 04:59:54 +0000 | [diff] [blame] | 27 | bool stop_id_is_valid) : |
| 28 | Unwind (thread), |
| 29 | m_pcs (pcs), |
Jason Molenda | 02706c3 | 2013-11-08 04:59:54 +0000 | [diff] [blame] | 30 | m_stop_id_is_valid (stop_id_is_valid) |
| 31 | { |
| 32 | } |
| 33 | |
Jason Molenda | a8ff543 | 2014-03-06 06:31:18 +0000 | [diff] [blame] | 34 | // Destructor |
| 35 | |
Jason Molenda | 02706c3 | 2013-11-08 04:59:54 +0000 | [diff] [blame] | 36 | HistoryUnwind::~HistoryUnwind () |
| 37 | { |
| 38 | } |
| 39 | |
| 40 | void |
| 41 | HistoryUnwind::DoClear () |
| 42 | { |
| 43 | Mutex::Locker locker(m_unwind_mutex); |
| 44 | m_pcs.clear(); |
| 45 | m_stop_id_is_valid = false; |
| 46 | } |
| 47 | |
| 48 | lldb::RegisterContextSP |
| 49 | HistoryUnwind::DoCreateRegisterContextForFrame (StackFrame *frame) |
| 50 | { |
| 51 | RegisterContextSP rctx; |
| 52 | if (frame) |
| 53 | { |
| 54 | addr_t pc = frame->GetFrameCodeAddress().GetLoadAddress (&frame->GetThread()->GetProcess()->GetTarget()); |
| 55 | if (pc != LLDB_INVALID_ADDRESS) |
| 56 | { |
| 57 | rctx.reset (new RegisterContextHistory (*frame->GetThread().get(), frame->GetConcreteFrameIndex(), |
| 58 | frame->GetThread()->GetProcess()->GetAddressByteSize(), pc)); |
| 59 | } |
| 60 | } |
| 61 | return rctx; |
| 62 | } |
| 63 | |
| 64 | bool |
| 65 | HistoryUnwind::DoGetFrameInfoAtIndex (uint32_t frame_idx, lldb::addr_t& cfa, lldb::addr_t& pc) |
| 66 | { |
Jason Molenda | d81c483 | 2014-06-23 21:30:15 +0000 | [diff] [blame] | 67 | Mutex::Locker (m_unwind_mutex); // FIXME do not throw away the lock after we acquire it.. |
Jason Molenda | 02706c3 | 2013-11-08 04:59:54 +0000 | [diff] [blame] | 68 | if (frame_idx < m_pcs.size()) |
| 69 | { |
| 70 | cfa = frame_idx; |
| 71 | pc = m_pcs[frame_idx]; |
| 72 | return true; |
| 73 | } |
| 74 | return false; |
| 75 | } |
| 76 | |
| 77 | uint32_t |
| 78 | HistoryUnwind::DoGetFrameCount () |
| 79 | { |
| 80 | return m_pcs.size(); |
| 81 | } |