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//===-- DWARFCompileUnit.h --------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef liblldb_DWARFCompileUnit_h_
#define SymbolFileDWARF_DWARFCompileUnit_h_
#include "SymbolFileDWARF.h"
#include "DWARFDebugInfoEntry.h"
class NameToDIE;
class DWARFCompileUnit
{
public:
DWARFCompileUnit(SymbolFileDWARF* dwarf2Data);
bool Extract(const lldb_private::DataExtractor &debug_info, uint32_t* offset_ptr);
dw_offset_t Extract(dw_offset_t offset, const lldb_private::DataExtractor& debug_info_data, const DWARFAbbreviationDeclarationSet* abbrevs);
size_t ExtractDIEsIfNeeded (bool cu_die_only);
bool LookupAddress(
const dw_addr_t address,
DWARFDebugInfoEntry** function_die,
DWARFDebugInfoEntry** block_die);
size_t AppendDIEsWithTag (const dw_tag_t tag, DWARFDIECollection& matching_dies, uint32_t depth = UINT32_MAX) const;
void Clear();
bool Verify(lldb_private::Stream *s) const;
void Dump(lldb_private::Stream *s) const;
dw_offset_t GetOffset() const { return m_offset; }
uint32_t Size() const { return 11; /* Size in bytes of the compile unit header */ }
bool ContainsDIEOffset(dw_offset_t die_offset) const { return die_offset >= GetFirstDIEOffset() && die_offset < GetNextCompileUnitOffset(); }
dw_offset_t GetFirstDIEOffset() const { return m_offset + Size(); }
dw_offset_t GetNextCompileUnitOffset() const { return m_offset + m_length + 4; }
size_t GetDebugInfoSize() const { return m_length + 4 - Size(); /* Size in bytes of the .debug_info data associated with this compile unit. */ }
uint32_t GetLength() const { return m_length; }
uint16_t GetVersion() const { return m_version; }
const DWARFAbbreviationDeclarationSet* GetAbbreviations() const { return m_abbrevs; }
dw_offset_t GetAbbrevOffset() const;
uint8_t GetAddressByteSize() const { return m_addr_size; }
dw_addr_t GetBaseAddress() const { return m_base_addr; }
void ClearDIEs(bool keep_compile_unit_die);
void
SetBaseAddress(dw_addr_t base_addr)
{
m_base_addr = base_addr;
}
void
SetDIERelations();
const DWARFDebugInfoEntry*
GetCompileUnitDIEOnly()
{
ExtractDIEsIfNeeded (true);
if (m_die_array.empty())
return NULL;
return &m_die_array[0];
}
const DWARFDebugInfoEntry*
DIE()
{
ExtractDIEsIfNeeded (false);
if (m_die_array.empty())
return NULL;
return &m_die_array[0];
}
void
AddDIE(DWARFDebugInfoEntry& die)
{
// The average bytes per DIE entry has been seen to be
// around 14-20 so lets pre-reserve the needed memory for
// our DIE entries accordingly. Search forward for "Compute
// average bytes per DIE" to see #if'ed out code that does
// that determination.
// Only reserve the memory if we are adding children of
// the main compile unit DIE. The compile unit DIE is always
// the first entry, so if our size is 1, then we are adding
// the first compile unit child DIE and should reserve
// the memory.
if (m_die_array.empty())
m_die_array.reserve(GetDebugInfoSize() / 14);
m_die_array.push_back(die);
}
DWARFDebugInfoEntry*
GetDIEAtIndexUnchecked (uint32_t idx)
{
return &m_die_array[idx];
}
DWARFDebugInfoEntry*
GetDIEPtr (dw_offset_t die_offset);
const DWARFDebugInfoEntry*
GetDIEPtrContainingOffset (dw_offset_t die_offset);
static uint8_t
GetAddressByteSize(const DWARFCompileUnit* cu);
static uint8_t
GetDefaultAddressSize();
static void
SetDefaultAddressSize(uint8_t addr_size);
void *
GetUserData() const
{
return m_user_data;
}
void
SetUserData(void *d)
{
m_user_data = d;
}
// void
// AddGlobalDIEByIndex (uint32_t die_idx);
//
// void
// AddGlobal (const DWARFDebugInfoEntry* die);
//
void
Index (const uint32_t cu_idx,
NameToDIE& func_basenames,
NameToDIE& func_fullnames,
NameToDIE& func_methods,
NameToDIE& func_selectors,
NameToDIE& objc_class_selectors,
NameToDIE& globals,
NameToDIE& types,
NameToDIE& namespaces,
const DWARFDebugRanges* debug_ranges,
DWARFDebugAranges *aranges);
protected:
SymbolFileDWARF* m_dwarf2Data;
dw_offset_t m_offset;
uint32_t m_length;
uint16_t m_version;
const DWARFAbbreviationDeclarationSet*
m_abbrevs;
uint8_t m_addr_size;
dw_addr_t m_base_addr;
DWARFDebugInfoEntry::collection
m_die_array; // The compile unit debug information entry item
std::auto_ptr<DWARFDebugAranges> m_aranges_ap; // A table similar to the .debug_aranges table, but this one points to the exact DW_TAG_subprogram DIEs
void * m_user_data;
private:
DISALLOW_COPY_AND_ASSIGN (DWARFCompileUnit);
};
#endif // SymbolFileDWARF_DWARFCompileUnit_h_
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