void
DYLDRendezvous::DumpToLog(LogSP log) const
{
int state = GetState();
if (!log)
return;
log->PutCString("DYLDRendezvous:");
log->Printf(" Address: %llx", GetRendezvousAddress());
log->Printf(" Version: %d", GetVersion());
log->Printf(" Link : %llx", GetLinkMapAddress());
log->Printf(" Break : %llx", GetBreakAddress());
log->Printf(" LDBase : %llx", GetLDBase());
log->Printf(" State : %s",
(state == eConsistent) ? "consistent" :
(state == eAdd) ? "add" :
(state == eDelete) ? "delete" : "unknown");
iterator I = begin();
iterator E = end();
if (I != E)
log->PutCString("DYLDRendezvous SOEntries:");
for (int i = 1; I != E; ++I, ++i)
{
log->Printf("\n SOEntry [%d] %s", i, I->path.c_str());
log->Printf(" Base : %llx", I->base_addr);
log->Printf(" Path : %llx", I->path_addr);
log->Printf(" Dyn : %llx", I->dyn_addr);
log->Printf(" Next : %llx", I->next);
log->Printf(" Prev : %llx", I->prev);
}
}
//----------------------------------------------------------------------
// ParseCompileUnitDIEsIfNeeded
//
// Parses a compile unit and indexes its DIEs if it hasn't already been
// done.
//----------------------------------------------------------------------
size_t
DWARFCompileUnit::ExtractDIEsIfNeeded (bool cu_die_only)
{
const size_t initial_die_array_size = m_die_array.size();
if ((cu_die_only && initial_die_array_size > 0) || initial_die_array_size > 1)
return 0; // Already parsed
Timer scoped_timer (__PRETTY_FUNCTION__,
"%8.8x: DWARFCompileUnit::ExtractDIEsIfNeeded( cu_die_only = %i )",
m_offset,
cu_die_only);
// Set the offset to that of the first DIE and calculate the start of the
// next compilation unit header.
uint32_t offset = GetFirstDIEOffset();
uint32_t next_cu_offset = GetNextCompileUnitOffset();
DWARFDebugInfoEntry die;
// Keep a flat array of the DIE for binary lookup by DIE offset
if (!cu_die_only)
{
LogSP log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | DWARF_LOG_LOOKUPS));
if (log)
{
m_dwarf2Data->GetObjectFile()->GetModule()->LogMessageVerboseBacktrace (log.get(),
"DWARFCompileUnit::ExtractDIEsIfNeeded () for compile unit at .debug_info[0x%8.8x]",
GetOffset());
}
}
uint32_t depth = 0;
// We are in our compile unit, parse starting at the offset
// we were told to parse
const DataExtractor& debug_info_data = m_dwarf2Data->get_debug_info_data();
std::vector<uint32_t> die_index_stack;
die_index_stack.reserve(32);
die_index_stack.push_back(0);
bool prev_die_had_children = false;
const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (GetAddressByteSize());
while (offset < next_cu_offset &&
die.FastExtract (debug_info_data, this, fixed_form_sizes, &offset))
{
// if (log)
// log->Printf("0x%8.8x: %*.*s%s%s",
// die.GetOffset(),
// depth * 2, depth * 2, "",
// DW_TAG_value_to_name (die.Tag()),
// die.HasChildren() ? " *" : "");
const bool null_die = die.IsNULL();
if (depth == 0)
{
uint64_t base_addr = die.GetAttributeValueAsUnsigned(m_dwarf2Data, this, DW_AT_low_pc, LLDB_INVALID_ADDRESS);
if (base_addr == LLDB_INVALID_ADDRESS)
base_addr = die.GetAttributeValueAsUnsigned(m_dwarf2Data, this, DW_AT_entry_pc, 0);
SetBaseAddress (base_addr);
if (initial_die_array_size == 0)
AddDIE (die);
if (cu_die_only)
return 1;
}
else
{
if (null_die)
{
if (prev_die_had_children)
{
// This will only happen if a DIE says is has children
// but all it contains is a NULL tag. Since we are removing
// the NULL DIEs from the list (saves up to 25% in C++ code),
// we need a way to let the DIE know that it actually doesn't
// have children.
if (!m_die_array.empty())
m_die_array.back().SetEmptyChildren(true);
}
}
else
{
die.SetParentIndex(m_die_array.size() - die_index_stack[depth-1]);
if (die_index_stack.back())
m_die_array[die_index_stack.back()].SetSiblingIndex(m_die_array.size()-die_index_stack.back());
// Only push the DIE if it isn't a NULL DIE
m_die_array.push_back(die);
}
}
if (null_die)
{
// NULL DIE.
if (!die_index_stack.empty())
die_index_stack.pop_back();
if (depth > 0)
--depth;
if (depth == 0)
break; // We are done with this compile unit!
prev_die_had_children = false;
}
else
{
die_index_stack.back() = m_die_array.size() - 1;
// Normal DIE
const bool die_has_children = die.HasChildren();
if (die_has_children)
{
die_index_stack.push_back(0);
++depth;
}
prev_die_had_children = die_has_children;
}
}
// Give a little bit of info if we encounter corrupt DWARF (our offset
// should always terminate at or before the start of the next compilation
// unit header).
if (offset > next_cu_offset)
{
m_dwarf2Data->GetObjectFile()->GetModule()->ReportWarning ("DWARF compile unit extends beyond its bounds cu 0x%8.8x at 0x%8.8x\n",
GetOffset(),
offset);
}
// Since std::vector objects will double their size, we really need to
// make a new array with the perfect size so we don't end up wasting
// space. So here we copy and swap to make sure we don't have any extra
// memory taken up.
if (m_die_array.size () < m_die_array.capacity())
{
DWARFDebugInfoEntry::collection exact_size_die_array (m_die_array.begin(), m_die_array.end());
exact_size_die_array.swap (m_die_array);
}
LogSP log (LogChannelDWARF::GetLogIfAll (DWARF_LOG_DEBUG_INFO | DWARF_LOG_VERBOSE));
if (log)
{
StreamString strm;
DWARFDebugInfoEntry::DumpDIECollection (strm, m_die_array);
log->PutCString (strm.GetString().c_str());
}
return m_die_array.size();
}
