OSchip
/
llvm-project
mirror of https://github.com/THU-DSP-LAB/llvm-project.git
13
0
Fork 6
Code Issues Packages Projects Releases Wiki Activity
llvm-project/lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.cpp

571 lines
14 KiB
C++
Raw Blame History

//===-- DWARFDIE.cpp --------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "DWARFDIE.h"
#include "DWARFASTParser.h"
#include "DWARFCompileUnit.h"
#include "DWARFDebugAbbrev.h"
#include "DWARFDebugAranges.h"
#include "DWARFDebugInfo.h"
#include "DWARFDebugInfoEntry.h"
#include "DWARFDebugRanges.h"
#include "DWARFDeclContext.h"
#include "DWARFDIECollection.h"
#include "DWARFFormValue.h"
#include "SymbolFileDWARF.h"
#include "lldb/Core/Module.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Symbol/Type.h"
#include "lldb/Symbol/TypeSystem.h"
using namespace lldb_private;
DIERef
DWARFDIE::GetDIERef() const
{
if (!IsValid())
return DIERef();
dw_offset_t cu_offset = m_cu->GetOffset();
if (m_cu->GetBaseObjOffset() != DW_INVALID_OFFSET)
cu_offset = m_cu->GetBaseObjOffset();
return DIERef(cu_offset, m_die->GetOffset());
}
dw_tag_t
DWARFDIE::Tag() const
{
if (m_die)
return m_die->Tag();
else
return 0;
}
const char *
DWARFDIE::GetTagAsCString () const
{
return lldb_private::DW_TAG_value_to_name (Tag());
}
DWARFDIE
DWARFDIE::GetParent () const
{
if (IsValid())
return DWARFDIE(m_cu, m_die->GetParent());
else
return DWARFDIE();
}
DWARFDIE
DWARFDIE::GetFirstChild () const
{
if (IsValid())
return DWARFDIE(m_cu, m_die->GetFirstChild());
else
return DWARFDIE();
}
DWARFDIE
DWARFDIE::GetSibling () const
{
if (IsValid())
return DWARFDIE(m_cu, m_die->GetSibling());
else
return DWARFDIE();
}
DWARFDIE
DWARFDIE::GetReferencedDIE (const dw_attr_t attr) const
{
const dw_offset_t die_offset = GetAttributeValueAsReference (attr, DW_INVALID_OFFSET);
if (die_offset != DW_INVALID_OFFSET)
return GetDIE(die_offset);
else
return DWARFDIE();
}
DWARFDIE
DWARFDIE::GetDIE (dw_offset_t die_offset) const
{
if (IsValid())
return m_cu->GetDIE(die_offset);
else
return DWARFDIE();
}
const char *
DWARFDIE::GetAttributeValueAsString (const dw_attr_t attr, const char *fail_value) const
{
if (IsValid())
return m_die->GetAttributeValueAsString(GetDWARF(), GetCU(), attr, fail_value);
else
return fail_value;
}
uint64_t
DWARFDIE::GetAttributeValueAsUnsigned (const dw_attr_t attr, uint64_t fail_value) const
{
if (IsValid())
return m_die->GetAttributeValueAsUnsigned(GetDWARF(), GetCU(), attr, fail_value);
else
return fail_value;
}
int64_t
DWARFDIE::GetAttributeValueAsSigned (const dw_attr_t attr, int64_t fail_value) const
{
if (IsValid())
return m_die->GetAttributeValueAsSigned(GetDWARF(), GetCU(), attr, fail_value);
else
return fail_value;
}
DWARFDIE
DWARFDIE::GetAttributeValueAsReferenceDIE (const dw_attr_t attr) const
{
if (IsValid())
{
DWARFCompileUnit *cu = GetCU();
SymbolFileDWARF *dwarf = cu->GetSymbolFileDWARF();
const bool check_specification_or_abstract_origin = true;
DWARFFormValue form_value;
if (m_die->GetAttributeValue(dwarf, cu, attr, form_value, nullptr, check_specification_or_abstract_origin))
return dwarf->GetDIE(DIERef(form_value));
}
return DWARFDIE();
}
uint64_t
DWARFDIE::GetAttributeValueAsReference (const dw_attr_t attr, uint64_t fail_value) const
{
if (IsValid())
return m_die->GetAttributeValueAsReference(GetDWARF(), GetCU(), attr, fail_value);
else
return fail_value;
}
uint64_t
DWARFDIE::GetAttributeValueAsAddress (const dw_attr_t attr, uint64_t fail_value) const
{
if (IsValid())
return m_die->GetAttributeValueAsAddress(GetDWARF(), GetCU(), attr, fail_value);
else
return fail_value;
}
DWARFDIE
DWARFDIE::LookupDeepestBlock (lldb::addr_t file_addr) const
{
if (IsValid())
{
SymbolFileDWARF *dwarf= GetDWARF();
DWARFCompileUnit *cu = GetCU();
DWARFDebugInfoEntry* function_die = nullptr;
DWARFDebugInfoEntry* block_die = nullptr;
if (m_die->LookupAddress (file_addr,
dwarf,
cu,
&function_die,
&block_die))
{
if (block_die && block_die != function_die)
{
if (cu->ContainsDIEOffset(block_die->GetOffset()))
return DWARFDIE(cu, block_die);
else
return DWARFDIE(dwarf->DebugInfo()->GetCompileUnit(DIERef(cu->GetOffset(), block_die->GetOffset())), block_die);
}
}
}
return DWARFDIE();
}
lldb::user_id_t
DWARFDIE::GetID () const
{
return GetDIERef().GetUID(GetDWARF());
}
const char *
DWARFDIE::GetName () const
{
if (IsValid())
return m_die->GetName (GetDWARF(), m_cu);
else
return nullptr;
}
const char *
DWARFDIE::GetMangledName () const
{
if (IsValid())
return m_die->GetMangledName (GetDWARF(), m_cu);
else
return nullptr;
}
const char *
DWARFDIE::GetPubname () const
{
if (IsValid())
return m_die->GetPubname (GetDWARF(), m_cu);
else
return nullptr;
}
const char *
DWARFDIE::GetQualifiedName (std::string &storage) const
{
if (IsValid())
return m_die->GetQualifiedName (GetDWARF(), m_cu, storage);
else
return nullptr;
}
lldb::LanguageType
DWARFDIE::GetLanguage () const
{
if (IsValid())
return m_cu->GetLanguageType();
else
return lldb::eLanguageTypeUnknown;
}
lldb::ModuleSP
DWARFDIE::GetModule () const
{
SymbolFileDWARF *dwarf = GetDWARF();
if (dwarf)
return dwarf->GetObjectFile()->GetModule();
else
return lldb::ModuleSP();
}
lldb_private::CompileUnit *
DWARFDIE::GetLLDBCompileUnit () const
{
if (IsValid())
return GetDWARF()->GetCompUnitForDWARFCompUnit(GetCU());
else
return nullptr;
}
lldb_private::Type *
DWARFDIE::ResolveType () const
{
if (IsValid())
return GetDWARF()->ResolveType(*this, true);
else
return nullptr;
}
lldb_private::Type *
DWARFDIE::ResolveTypeUID (const DIERef &die_ref) const
{
SymbolFileDWARF *dwarf = GetDWARF();
if (dwarf)
return dwarf->ResolveTypeUID(dwarf->GetDIE(die_ref), true);
else
return nullptr;
}
void
DWARFDIE::GetDeclContextDIEs (DWARFDIECollection &decl_context_dies) const
{
if (IsValid())
{
DWARFDIE parent_decl_ctx_die = m_die->GetParentDeclContextDIE (GetDWARF(), GetCU());
if (parent_decl_ctx_die && parent_decl_ctx_die.GetDIE() != GetDIE())
{
decl_context_dies.Append(parent_decl_ctx_die);
parent_decl_ctx_die.GetDeclContextDIEs (decl_context_dies);
}
}
}
void
DWARFDIE::GetDWARFDeclContext (DWARFDeclContext &dwarf_decl_ctx) const
{
if (IsValid())
{
dwarf_decl_ctx.SetLanguage(GetLanguage());
m_die->GetDWARFDeclContext (GetDWARF(), GetCU(), dwarf_decl_ctx);
}
else
{
dwarf_decl_ctx.Clear();
}
}
void
DWARFDIE::GetDWOContext (std::vector<CompilerContext> &context) const
{
const dw_tag_t tag = Tag();
if (tag == DW_TAG_compile_unit)
return;
DWARFDIE parent = GetParent();
if (parent)
parent.GetDWOContext(context);
switch (tag)
{
case DW_TAG_module:
context.push_back(CompilerContext(CompilerContextKind::Module, ConstString(GetName())));
break;
case DW_TAG_namespace:
context.push_back(CompilerContext(CompilerContextKind::Namespace, ConstString(GetName())));
break;
case DW_TAG_structure_type:
context.push_back(CompilerContext(CompilerContextKind::Structure, ConstString(GetName())));
break;
case DW_TAG_union_type:
context.push_back(CompilerContext(CompilerContextKind::Union, ConstString(GetName())));
break;
case DW_TAG_class_type:
context.push_back(CompilerContext(CompilerContextKind::Class, ConstString(GetName())));
break;
case DW_TAG_enumeration_type:
context.push_back(CompilerContext(CompilerContextKind::Enumeration, ConstString(GetName())));
break;
case DW_TAG_subprogram:
context.push_back(CompilerContext(CompilerContextKind::Function, ConstString(GetPubname())));
break;
case DW_TAG_variable:
context.push_back(CompilerContext(CompilerContextKind::Variable, ConstString(GetPubname())));
break;
case DW_TAG_typedef:
context.push_back(CompilerContext(CompilerContextKind::Typedef, ConstString(GetName())));
break;
default:
break;
}
}
DWARFDIE
DWARFDIE::GetParentDeclContextDIE () const
{
if (IsValid())
return m_die->GetParentDeclContextDIE(GetDWARF(), m_cu);
else
return DWARFDIE();
}
dw_offset_t
DWARFDIE::GetOffset () const
{
if (IsValid())
return m_die->GetOffset();
else
return DW_INVALID_OFFSET;
}
dw_offset_t
DWARFDIE::GetCompileUnitRelativeOffset () const
{
if (IsValid())
return m_die->GetOffset() - m_cu->GetOffset();
else
return DW_INVALID_OFFSET;
}
SymbolFileDWARF *
DWARFDIE::GetDWARF () const
{
if (m_cu)
return m_cu->GetSymbolFileDWARF();
else
return nullptr;
}
lldb_private::TypeSystem *
DWARFDIE::GetTypeSystem () const
{
if (m_cu)
return m_cu->GetTypeSystem();
else
return nullptr;
}
DWARFASTParser *
DWARFDIE::GetDWARFParser () const
{
lldb_private::TypeSystem *type_system = GetTypeSystem ();
if (type_system)
return type_system->GetDWARFParser();
else
return nullptr;
}
bool
DWARFDIE::IsStructOrClass () const
{
const dw_tag_t tag = Tag();
return tag == DW_TAG_class_type || tag == DW_TAG_structure_type;
}
DWARFDIE
DWARFDIE::GetContainingDWOModuleDIE () const
{
if (IsValid())
{
DWARFDIE top_module_die;
// Now make sure this DIE is scoped in a DW_TAG_module tag and return true if so
for (DWARFDIE parent = GetParent(); parent.IsValid(); parent = parent.GetParent())
{
const dw_tag_t tag = parent.Tag();
if (tag == DW_TAG_module)
top_module_die = parent;
else if (tag == DW_TAG_compile_unit)
break;
}
return top_module_die;
}
return DWARFDIE();
}
lldb::ModuleSP
DWARFDIE::GetContainingDWOModule () const
{
if (IsValid())
{
DWARFDIE dwo_module_die = GetContainingDWOModuleDIE();
if (dwo_module_die)
{
const char *module_name = dwo_module_die.GetName();
if (module_name)
return GetDWARF()->GetDWOModule (lldb_private::ConstString(module_name));
}
}
return lldb::ModuleSP();
}
bool
DWARFDIE::HasChildren () const
{
if (m_die)
return m_die->HasChildren();
else
return false;
}
bool
DWARFDIE::Supports_DW_AT_APPLE_objc_complete_type () const
{
if (IsValid())
return GetDWARF()->Supports_DW_AT_APPLE_objc_complete_type(m_cu);
else
return false;
}
size_t
DWARFDIE::GetAttributes (DWARFAttributes &attributes, uint32_t depth) const
{
if (IsValid())
{
return m_die->GetAttributes (m_cu,
m_cu->GetFixedFormSizes(),
attributes,
depth);
}
if (depth == 0)
attributes.Clear();
return 0;
}
bool
DWARFDIE::GetDIENamesAndRanges (const char * &name,
const char * &mangled,
DWARFRangeList& ranges,
int& decl_file,
int& decl_line,
int& decl_column,
int& call_file,
int& call_line,
int& call_column,
lldb_private::DWARFExpression *frame_base) const
{
if (IsValid())
{
return m_die->GetDIENamesAndRanges (GetDWARF(),
GetCU(),
name,
mangled,
ranges,
decl_file,
decl_line,
decl_column,
call_file,
call_line,
call_column,
frame_base);
}
else
return false;
}
void
DWARFDIE::Dump (lldb_private::Stream *s, const uint32_t recurse_depth) const
{
if (s && IsValid())
m_die->Dump (GetDWARF(), GetCU(), *s, recurse_depth);
}
CompilerDecl
DWARFDIE::GetDecl () const
{
DWARFASTParser *dwarf_ast = GetDWARFParser();
if (dwarf_ast)
return dwarf_ast->GetDeclForUIDFromDWARF(*this);
else
return CompilerDecl();
}
CompilerDeclContext
DWARFDIE::GetDeclContext () const
{
DWARFASTParser *dwarf_ast = GetDWARFParser();
if (dwarf_ast)
return dwarf_ast->GetDeclContextForUIDFromDWARF(*this);
else
return CompilerDeclContext();
}
CompilerDeclContext
DWARFDIE::GetContainingDeclContext () const
{
DWARFASTParser *dwarf_ast = GetDWARFParser();
if (dwarf_ast)
return dwarf_ast->GetDeclContextContainingUIDFromDWARF(*this);
else
return CompilerDeclContext();
}
bool operator == (const DWARFDIE &lhs, const DWARFDIE &rhs)
{
return lhs.GetDIE() == rhs.GetDIE() && lhs.GetCU() == rhs.GetCU();
}
bool operator != (const DWARFDIE &lhs, const DWARFDIE &rhs)
{
return lhs.GetDIE() != rhs.GetDIE() || lhs.GetCU() != rhs.GetCU();
}
Reference in New Issue View Git Blame Copy Permalink