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//===-- DWARFDebugPubnamesSet.cpp -------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "DWARFDebugPubnamesSet.h"
#include "lldb/Core/RegularExpression.h"
#include "lldb/Core/Log.h"
#include "SymbolFileDWARF.h"
using namespace lldb_private;
DWARFDebugPubnamesSet::DWARFDebugPubnamesSet() :
m_offset(DW_INVALID_OFFSET),
m_header(),
m_descriptors(),
m_name_to_descriptor_index()
{
}
DWARFDebugPubnamesSet::DWARFDebugPubnamesSet(dw_offset_t debug_aranges_offset, dw_offset_t cu_die_offset, dw_offset_t cu_die_length) :
m_offset(debug_aranges_offset),
m_header(),
m_descriptors(),
m_name_to_descriptor_index()
{
m_header.length = 10; // set the length to only include the header right for now
m_header.version = 2; // The DWARF version number
m_header.die_offset = cu_die_offset;// compile unit .debug_info offset
m_header.die_length = cu_die_length;// compile unit .debug_info length
}
void
DWARFDebugPubnamesSet::AddDescriptor(dw_offset_t cu_rel_offset, const char* name)
{
if (name && name[0])
{
// Adjust our header length
m_header.length += strlen(name) + 1 + sizeof(dw_offset_t);
Descriptor pubnameDesc(cu_rel_offset, name);
m_descriptors.push_back(pubnameDesc);
}
}
void
DWARFDebugPubnamesSet::Clear()
{
m_offset = DW_INVALID_OFFSET;
m_header.length = 10;
m_header.version = 2;
m_header.die_offset = DW_INVALID_OFFSET;
m_header.die_length = 0;
m_descriptors.clear();
}
//----------------------------------------------------------------------
// InitNameIndexes
//----------------------------------------------------------------------
void
DWARFDebugPubnamesSet::InitNameIndexes() const
{
// Create the name index vector to be able to quickly search by name
const size_t count = m_descriptors.size();
for (uint32_t idx = 0; idx < count; ++idx)
{
const char* name = m_descriptors[idx].name.c_str();
if (name && name[0])
m_name_to_descriptor_index.insert(cstr_to_index_mmap::value_type(name, idx));
}
}
bool
DWARFDebugPubnamesSet::Extract(const DWARFDataExtractor& data, lldb::offset_t *offset_ptr)
{
if (data.ValidOffset(*offset_ptr))
{
m_descriptors.clear();
m_offset = *offset_ptr;
m_header.length = data.GetDWARFInitialLength(offset_ptr);
m_header.version = data.GetU16(offset_ptr);
m_header.die_offset = data.GetDWARFOffset(offset_ptr);
m_header.die_length = data.GetDWARFOffset(offset_ptr);
Descriptor pubnameDesc;
while (data.ValidOffset(*offset_ptr))
{
pubnameDesc.offset = data.GetDWARFOffset(offset_ptr);
if (pubnameDesc.offset)
{
const char* name = data.GetCStr(offset_ptr);
if (name && name[0])
{
pubnameDesc.name = name;
m_descriptors.push_back(pubnameDesc);
}
}
else
break; // We are done if we get a zero 4 byte offset
}
return !m_descriptors.empty();
}
return false;
}
dw_offset_t
DWARFDebugPubnamesSet::GetOffsetOfNextEntry() const
{
return m_offset + m_header.length + 4;
}
void
DWARFDebugPubnamesSet::Dump(Log *log) const
{
log->Printf("Pubnames Header: length = 0x%8.8x, version = 0x%4.4x, die_offset = 0x%8.8x, die_length = 0x%8.8x",
m_header.length,
m_header.version,
m_header.die_offset,
m_header.die_length);
bool verbose = log->GetVerbose();
DescriptorConstIter pos;
DescriptorConstIter end = m_descriptors.end();
for (pos = m_descriptors.begin(); pos != end; ++pos)
{
if (verbose)
log->Printf("0x%8.8x + 0x%8.8x = 0x%8.8x: %s", pos->offset, m_header.die_offset, pos->offset + m_header.die_offset, pos->name.c_str());
else
log->Printf("0x%8.8x: %s", pos->offset + m_header.die_offset, pos->name.c_str());
}
}
void
DWARFDebugPubnamesSet::Find(const char* name, bool ignore_case, std::vector<dw_offset_t>& die_offset_coll) const
{
if (!m_descriptors.empty() && m_name_to_descriptor_index.empty())
InitNameIndexes();
std::pair<cstr_to_index_mmap::const_iterator, cstr_to_index_mmap::const_iterator> range(m_name_to_descriptor_index.equal_range(name));
for (cstr_to_index_mmap::const_iterator pos = range.first; pos != range.second; ++pos)
die_offset_coll.push_back(m_header.die_offset + m_descriptors[(*pos).second].offset);
}
void
DWARFDebugPubnamesSet::Find(const RegularExpression& regex, std::vector<dw_offset_t>& die_offset_coll) const
{
DescriptorConstIter pos;
DescriptorConstIter end = m_descriptors.end();
for (pos = m_descriptors.begin(); pos != end; ++pos)
{
if ( regex.Execute(pos->name.c_str()) )
die_offset_coll.push_back(m_header.die_offset + pos->offset);
}
}
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