//----------------------------------------------------------------------
// Parse
//
// Parses the .debug_info section and uses the .debug_abbrev section
// and various other sections in the SymbolFileDWARF class and calls the
// supplied callback function each time a compile unit header, or debug
// information entry is successfully parsed. This function can be used
// for different tasks such as parsing the file contents into a
// structured data, dumping, verifying and much more.
//----------------------------------------------------------------------
void DWARFDebugInfo::Parse(SymbolFileDWARF *dwarf2Data, Callback callback,
void *userData) {
if (dwarf2Data) {
lldb::offset_t offset = 0;
uint32_t depth = 0;
DWARFDebugInfoEntry die;
DWARFCompileUnitSP cu;
while ((cu = DWARFCompileUnit::Extract(dwarf2Data, &offset))) {
const dw_offset_t next_cu_offset = cu->GetNextCompileUnitOffset();
depth = 0;
// Call the callback function with no DIE pointer for the compile unit
// and get the offset that we are to continue to parse from
offset = callback(dwarf2Data, cu.get(), NULL, offset, depth, userData);
// Make sure we are within our compile unit
if (offset < next_cu_offset) {
// We are in our compile unit, parse starting at the offset
// we were told to parse
bool done = false;
while (!done && die.Extract(dwarf2Data, cu.get(), &offset)) {
// Call the callback function with DIE pointer that falls within the
// compile unit
offset =
callback(dwarf2Data, cu.get(), &die, offset, depth, userData);
if (die.IsNULL()) {
if (depth)
--depth;
else
done = true; // We are done with this compile unit!
} else if (die.HasChildren())
++depth;
}
}
// Make sure the offset returned is valid, and if not stop parsing.
// Returning DW_INVALID_OFFSET from this callback is a good way to end
// all parsing
if (!dwarf2Data->get_debug_info_data().ValidOffset(offset))
break;
// Make sure we start on a proper
offset = next_cu_offset;
}
}
}
//----------------------------------------------------------------------
// Parse
//
// Parses the .debug_info section and uses the .debug_abbrev section
// and various other sections in the SymbolFileDWARF class and calls the
// supplied callback function each time a compile unit header, or debug
// information entry is successfully parsed. This function can be used
// for different tasks such as parsing the file contents into a
// structured data, dumping, verifying and much more.
//----------------------------------------------------------------------
void
DWARFDebugInfo::Parse(SymbolFileDWARF* dwarf2Data, Callback callback, void* userData)
{
if (dwarf2Data)
{
lldb::offset_t offset = 0;
uint32_t depth = 0;
DWARFCompileUnitSP cu(new DWARFCompileUnit(dwarf2Data));
if (cu.get() == NULL)
return;
DWARFDebugInfoEntry die;
while (cu->Extract(dwarf2Data->get_debug_info_data(), &offset))
{
const dw_offset_t next_cu_offset = cu->GetNextCompileUnitOffset();
depth = 0;
// Call the callback function with no DIE pointer for the compile unit
// and get the offset that we are to continue to parse from
offset = callback(dwarf2Data, cu.get(), NULL, offset, depth, userData);
// Make sure we are within our compile unit
if (offset < next_cu_offset)
{
// We are in our compile unit, parse starting at the offset
// we were told to parse
bool done = false;
while (!done && die.Extract(dwarf2Data, cu.get(), &offset))
{
// Call the callback function with DIE pointer that falls within the compile unit
offset = callback(dwarf2Data, cu.get(), &die, offset, depth, userData);
if (die.IsNULL())
{
if (depth)
--depth;
else
done = true; // We are done with this compile unit!
}
else if (die.HasChildren())
++depth;
}
}
// Make sure the offset returned is valid, and if not stop parsing.
// Returning DW_INVALID_OFFSET from this callback is a good way to end
// all parsing
if (!dwarf2Data->get_debug_info_data().ValidOffset(offset))
break;
// See if during the callback anyone retained a copy of the compile
// unit other than ourselves and if so, let whomever did own the object
// and create a new one for our own use!
if (!cu.unique())
cu.reset(new DWARFCompileUnit(dwarf2Data));
// Make sure we start on a proper
offset = next_cu_offset;
}
}
}