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If the unwinder fails to make us a frame 0, make one by hand from the SP & PC. 

llvm-svn: 151793
This commit is contained in:
Jim Ingham 2012-03-01 02:53:40 +00:00
parent acd78d5092
commit 376c485493
1 changed files with 12 additions and 12 deletions
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24
lldb/source/Target/StackFrameList.cpp
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@ -83,25 +83,25 @@ StackFrameList::GetFramesUpTo(uint32_t end_idx)
// if we need to
if (m_frames.empty())
{
const bool success = unwinder->GetFrameInfoAtIndex(idx, cfa, pc);
// There shouldn't be any way not to get the frame info for frame 0.
assert (success);
m_thread.GetRegisterContext();
assert (m_thread.m_reg_context_sp.get());
const bool success = unwinder->GetFrameInfoAtIndex(idx, cfa, pc);
// There shouldn't be any way not to get the frame info for frame 0.
// But if the unwinder can't make one, lets make one by hand with the
// SP as the CFA and see if that gets any further.
if (!success)
{
cfa = m_thread.GetRegisterContext()->GetSP();
pc = m_thread.GetRegisterContext()->GetPC();
}
unwind_frame_sp.reset (new StackFrame (m_thread.shared_from_this(),
m_frames.size(),
idx,
m_thread.m_reg_context_sp,
// If set to 1 this will use the correct CFA & PC.
// Note for some reason the ValueObject Summaries and Formatters were relying on getting incorrect (constantly changing) values.
#if 1
cfa,
cfa,
pc,
#else
m_thread.GetRegisterContext()->GetSP(),
m_thread.GetRegisterContext()->GetPC(),
#endif
NULL));
m_frames.push_back (unwind_frame_sp);
}