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//===-- DWARFUnit.h ---------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef SymbolFileDWARF_DWARFUnit_h_
#define SymbolFileDWARF_DWARFUnit_h_
#include "DWARFDIE.h"
#include "DWARFDebugInfoEntry.h"
#include "lldb/lldb-enumerations.h"
#include "llvm/Support/RWMutex.h"
class DWARFUnit;
class DWARFCompileUnit;
class NameToDIE;
class SymbolFileDWARF;
class SymbolFileDWARFDwo;
typedef std::shared_ptr<DWARFUnit> DWARFUnitSP;
enum DWARFProducer {
eProducerInvalid = 0,
eProducerClang,
eProducerGCC,
eProducerLLVMGCC,
eProcucerOther
};
class DWARFUnit {
friend class DWARFCompileUnit;
public:
virtual ~DWARFUnit();
size_t ExtractDIEsIfNeeded(bool cu_die_only);
DWARFDIE LookupAddress(const dw_addr_t address);
size_t AppendDIEsWithTag(const dw_tag_t tag,
DWARFDIECollection &matching_dies,
uint32_t depth = UINT32_MAX) const;
bool Verify(lldb_private::Stream *s) const;
virtual void Dump(lldb_private::Stream *s) const = 0;
//------------------------------------------------------------------
/// Get the data that contains the DIE information for this unit.
///
/// This will return the correct bytes that contain the data for
/// this DWARFUnit. It could be .debug_info or .debug_types
/// depending on where the data for this unit originates.
///
/// @return
/// The correct data for the DIE information in this unit.
//------------------------------------------------------------------
virtual const lldb_private::DWARFDataExtractor &GetData() const = 0;
//------------------------------------------------------------------
/// Get the size in bytes of the compile unit header.
///
/// @return
/// Byte size of the compile unit header
//------------------------------------------------------------------
virtual uint32_t GetHeaderByteSize() const = 0;
// Offset of the initial length field.
dw_offset_t GetOffset() const { return m_offset; }
lldb::user_id_t GetID() const;
//------------------------------------------------------------------
/// Get the size in bytes of the length field in the header.
///
/// In DWARF32 this is just 4 bytes, and DWARF64 it is 12 where 4
/// are 0xFFFFFFFF followed by the actual 64 bit length.
///
/// @return
/// Byte size of the compile unit header length field
//------------------------------------------------------------------
size_t GetLengthByteSize() const { return IsDWARF64() ? 12 : 4; }
bool ContainsDIEOffset(dw_offset_t die_offset) const {
return die_offset >= GetFirstDIEOffset() &&
die_offset < GetNextCompileUnitOffset();
}
dw_offset_t GetFirstDIEOffset() const {
return m_offset + GetHeaderByteSize();
}
dw_offset_t GetNextCompileUnitOffset() const;
// Size of the CU data (without initial length and without header).
size_t GetDebugInfoSize() const;
// Size of the CU data incl. header but without initial length.
uint32_t GetLength() const { return m_length; }
uint16_t GetVersion() const { return m_version; }
const DWARFAbbreviationDeclarationSet *GetAbbreviations() const;
dw_offset_t GetAbbrevOffset() const;
uint8_t GetAddressByteSize() const { return m_addr_size; }
dw_addr_t GetBaseAddress() const { return m_base_addr; }
dw_addr_t GetAddrBase() const { return m_addr_base; }
dw_addr_t GetRangesBase() const { return m_ranges_base; }
void SetAddrBase(dw_addr_t addr_base, dw_addr_t ranges_base,
dw_offset_t base_obj_offset);
void ClearDIEs(bool keep_compile_unit_die);
void BuildAddressRangeTable(SymbolFileDWARF *dwarf,
DWARFDebugAranges *debug_aranges);
lldb::ByteOrder GetByteOrder() const;
lldb_private::TypeSystem *GetTypeSystem();
const DWARFDebugAranges &GetFunctionAranges();
DWARFFormValue::FixedFormSizes GetFixedFormSizes();
void SetBaseAddress(dw_addr_t base_addr);
DWARFDIE GetUnitDIEOnly() { return DWARFDIE(this, GetUnitDIEPtrOnly()); }
DWARFDIE DIE() { return DWARFDIE(this, DIEPtr()); }
bool HasDIEsParsed() const;
DWARFDIE GetDIE(dw_offset_t die_offset);
static uint8_t GetAddressByteSize(const DWARFUnit *cu);
static bool IsDWARF64(const DWARFUnit *cu);
static uint8_t GetDefaultAddressSize();
void *GetUserData() const;
void SetUserData(void *d);
bool Supports_DW_AT_APPLE_objc_complete_type();
bool DW_AT_decl_file_attributes_are_invalid();
bool Supports_unnamed_objc_bitfields();
void Index(NameToDIE &func_basenames, NameToDIE &func_fullnames,
NameToDIE &func_methods, NameToDIE &func_selectors,
NameToDIE &objc_class_selectors, NameToDIE &globals,
NameToDIE &types, NameToDIE &namespaces);
SymbolFileDWARF *GetSymbolFileDWARF() const;
DWARFProducer GetProducer();
uint32_t GetProducerVersionMajor();
uint32_t GetProducerVersionMinor();
uint32_t GetProducerVersionUpdate();
static lldb::LanguageType LanguageTypeFromDWARF(uint64_t val);
lldb::LanguageType GetLanguageType();
bool IsDWARF64() const { return m_is_dwarf64; }
bool GetIsOptimized();
SymbolFileDWARFDwo *GetDwoSymbolFile() const;
dw_offset_t GetBaseObjOffset() const;
protected:
DWARFUnit(SymbolFileDWARF *dwarf);
SymbolFileDWARF *m_dwarf = nullptr;
std::unique_ptr<SymbolFileDWARFDwo> m_dwo_symbol_file;
const DWARFAbbreviationDeclarationSet *m_abbrevs = nullptr;
void *m_user_data = nullptr;
// The compile unit debug information entry item
DWARFDebugInfoEntry::collection m_die_array;
// A table similar to the .debug_aranges table, but this one points to the
// exact DW_TAG_subprogram DIEs
std::unique_ptr<DWARFDebugAranges> m_func_aranges_ap;
dw_addr_t m_base_addr = 0;
dw_offset_t m_length = 0;
uint16_t m_version = 0;
uint8_t m_addr_size = 0;
DWARFProducer m_producer = eProducerInvalid;
uint32_t m_producer_version_major = 0;
uint32_t m_producer_version_minor = 0;
uint32_t m_producer_version_update = 0;
lldb::LanguageType m_language_type = lldb::eLanguageTypeUnknown;
bool m_is_dwarf64 = false;
lldb_private::LazyBool m_is_optimized = lldb_private::eLazyBoolCalculate;
dw_addr_t m_addr_base = 0; // Value of DW_AT_addr_base
dw_addr_t m_ranges_base = 0; // Value of DW_AT_ranges_base
// If this is a dwo compile unit this is the offset of the base compile unit
// in the main object file
dw_offset_t m_base_obj_offset = DW_INVALID_OFFSET;
llvm::sys::RWMutex m_extractdies_mutex;
static void
IndexPrivate(DWARFUnit *dwarf_cu, const lldb::LanguageType cu_language,
const DWARFFormValue::FixedFormSizes &fixed_form_sizes,
const dw_offset_t cu_offset, NameToDIE &func_basenames,
NameToDIE &func_fullnames, NameToDIE &func_methods,
NameToDIE &func_selectors, NameToDIE &objc_class_selectors,
NameToDIE &globals, NameToDIE &types, NameToDIE &namespaces);
// Offset of the initial length field.
dw_offset_t m_offset;
private:
void ParseProducerInfo();
// Get the DWARF unit DWARF debug informration entry. Parse the single DIE
// if needed.
const DWARFDebugInfoEntry *GetUnitDIEPtrOnly() {
ExtractDIEsIfNeeded(true);
if (m_die_array.empty())
return NULL;
return &m_die_array[0];
}
// Get all DWARF debug informration entries. Parse all DIEs if needed.
const DWARFDebugInfoEntry *DIEPtr() {
ExtractDIEsIfNeeded(false);
if (m_die_array.empty())
return NULL;
return &m_die_array[0];
}
void AddUnitDIE(DWARFDebugInfoEntry &die);
DISALLOW_COPY_AND_ASSIGN(DWARFUnit);
};
#endif // SymbolFileDWARF_DWARFUnit_h_
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