C++ ObjectFile::GetSymtab方法代码示例

bool
SymbolContext::GetAddressRange (uint32_t scope, AddressRange &range) const
{
    if ((scope & eSymbolContextLineEntry) && line_entry.IsValid())
    {
        range = line_entry.range;
        return true;
    }
    else if ((scope & eSymbolContextFunction) && function != NULL)
    {
        range = function->GetAddressRange();
        return true;
    }
    else if ((scope & eSymbolContextSymbol) && symbol != NULL && symbol->GetAddressRangePtr())
    {
        range = *symbol->GetAddressRangePtr();

        if (range.GetByteSize() == 0)
        {
            if (module_sp)
            {
                ObjectFile *objfile = module_sp->GetObjectFile();
                if (objfile)
                {
                    Symtab *symtab = objfile->GetSymtab();
                    if (symtab)
                        range.SetByteSize(symtab->CalculateSymbolSize (symbol));
                }
            }
        }
        return true;
    }
    range.Clear();
    return false;
}

size_t
Module::FindSymbolsWithNameAndType (const ConstString &name, SymbolType symbol_type, SymbolContextList &sc_list)
{
    // No need to protect this call using m_mutex all other method calls are
    // already thread safe.


    Timer scoped_timer(__PRETTY_FUNCTION__,
                       "Module::FindSymbolsWithNameAndType (name = %s, type = %i)",
                       name.AsCString(),
                       symbol_type);
    const size_t initial_size = sc_list.GetSize();
    ObjectFile *objfile = GetObjectFile ();
    if (objfile)
    {
        Symtab *symtab = objfile->GetSymtab();
        if (symtab)
        {
            std::vector<uint32_t> symbol_indexes;
            symtab->FindAllSymbolsWithNameAndType (name, symbol_type, symbol_indexes);
            SymbolIndicesToSymbolContextList (symtab, symbol_indexes, sc_list);
        }
    }
    return sc_list.GetSize() - initial_size;
}

// Find the load address of a symbol
static lldb::addr_t findSymbolAddress( Process *proc, ConstString findName )
{
    assert( proc != nullptr );

    ModuleSP module = proc->GetTarget().GetExecutableModule();
    assert( module.get() != nullptr );

    ObjectFile *exe = module->GetObjectFile();
    assert( exe != nullptr );

    lldb_private::Symtab *symtab = exe->GetSymtab( );
    assert( symtab != nullptr );

    for ( size_t i = 0; i < symtab->GetNumSymbols( ); i++ )
    {
        const Symbol* sym = symtab->SymbolAtIndex( i );
        assert( sym != nullptr );
        const ConstString &symName = sym->GetName( );

        if ( ConstString::Compare( findName, symName ) == 0 )
        {
            Address addr = sym->GetAddress();
            return addr.GetLoadAddress( & proc->GetTarget() );
        }
    }
    return LLDB_INVALID_ADDRESS;
}

Symtab *SymbolVendor::GetSymtab() {
  ModuleSP module_sp(GetModule());
  if (module_sp) {
    ObjectFile *objfile = module_sp->GetObjectFile();
    if (objfile) {
      // Get symbol table from unified section list.
      return objfile->GetSymtab();
    }
  }
  return nullptr;
}

uint32_t
Module::ResolveSymbolContextForAddress (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc)
{
    Mutex::Locker locker (m_mutex);
    uint32_t resolved_flags = 0;

    // Clear the result symbol context in case we don't find anything
    sc.Clear();

    // Get the section from the section/offset address.
    const Section *section = so_addr.GetSection();

    // Make sure the section matches this module before we try and match anything
    if (section && section->GetModule() == this)
    {
        // If the section offset based address resolved itself, then this
        // is the right module.
        sc.module_sp = GetSP();
        resolved_flags |= eSymbolContextModule;

        // Resolve the compile unit, function, block, line table or line
        // entry if requested.
        if (resolve_scope & eSymbolContextCompUnit    ||
            resolve_scope & eSymbolContextFunction    ||
            resolve_scope & eSymbolContextBlock       ||
            resolve_scope & eSymbolContextLineEntry   )
        {
            SymbolVendor *symbols = GetSymbolVendor ();
            if (symbols)
                resolved_flags |= symbols->ResolveSymbolContext (so_addr, resolve_scope, sc);
        }

        // Resolve the symbol if requested, but don't re-look it up if we've already found it.
        if (resolve_scope & eSymbolContextSymbol && !(resolved_flags & eSymbolContextSymbol))
        {
            ObjectFile* ofile = GetObjectFile();
            if (ofile)
            {
                Symtab *symtab = ofile->GetSymtab();
                if (symtab)
                {
                    if (so_addr.IsSectionOffset())
                    {
                        sc.symbol = symtab->FindSymbolContainingFileAddress(so_addr.GetFileAddress());
                        if (sc.symbol)
                            resolved_flags |= eSymbolContextSymbol;
                    }
                }
            }
        }
    }
    return resolved_flags;
}

bool
Address::Dump (Stream *s, ExecutionContextScope *exe_scope, DumpStyle style, DumpStyle fallback_style, uint32_t addr_size) const
{
    // If the section was NULL, only load address is going to work unless we are
    // trying to deref a pointer
    SectionSP section_sp (GetSection());
    if (!section_sp && style != DumpStyleResolvedPointerDescription)
        style = DumpStyleLoadAddress;

    ExecutionContext exe_ctx (exe_scope);
    Target *target = exe_ctx.GetTargetPtr();
    // If addr_byte_size is UINT32_MAX, then determine the correct address
    // byte size for the process or default to the size of addr_t
    if (addr_size == UINT32_MAX)
    {
        if (target)
            addr_size = target->GetArchitecture().GetAddressByteSize ();
        else
            addr_size = sizeof(addr_t);
    }

    Address so_addr;
    switch (style)
    {
    case DumpStyleInvalid:
        return false;

    case DumpStyleSectionNameOffset:
        if (section_sp)
        {
            section_sp->DumpName(s);
            s->Printf (" + %llu", m_offset);
        }
        else
        {
            s->Address(m_offset, addr_size);
        }
        break;

    case DumpStyleSectionPointerOffset:
        s->Printf("(Section *)%p + ", section_sp.get());
        s->Address(m_offset, addr_size);
        break;

    case DumpStyleModuleWithFileAddress:
        if (section_sp)
            s->Printf("%s[", section_sp->GetModule()->GetFileSpec().GetFilename().AsCString());
        // Fall through
    case DumpStyleFileAddress:
        {
            addr_t file_addr = GetFileAddress();
            if (file_addr == LLDB_INVALID_ADDRESS)
            {
                if (fallback_style != DumpStyleInvalid)
                    return Dump (s, exe_scope, fallback_style, DumpStyleInvalid, addr_size);
                return false;
            }
            s->Address (file_addr, addr_size);
            if (style == DumpStyleModuleWithFileAddress && section_sp)
                s->PutChar(']');
        }
        break;

    case DumpStyleLoadAddress:
        {
            addr_t load_addr = GetLoadAddress (target);
            if (load_addr == LLDB_INVALID_ADDRESS)
            {
                if (fallback_style != DumpStyleInvalid)
                    return Dump (s, exe_scope, fallback_style, DumpStyleInvalid, addr_size);
                return false;
            }
            s->Address (load_addr, addr_size);
        }
        break;

    case DumpStyleResolvedDescription:
    case DumpStyleResolvedDescriptionNoModule:
        if (IsSectionOffset())
        {
            uint32_t pointer_size = 4;
            ModuleSP module_sp (GetModule());
            if (target)
                pointer_size = target->GetArchitecture().GetAddressByteSize();
            else if (module_sp)
                pointer_size = module_sp->GetArchitecture().GetAddressByteSize();

            bool showed_info = false;
            if (section_sp)
            {
                SectionType sect_type = section_sp->GetType();
                switch (sect_type)
                {
                case eSectionTypeData:
                    if (module_sp)
                    {
                        ObjectFile *objfile = module_sp->GetObjectFile();
                        if (objfile)
                        {
                            Symtab *symtab = objfile->GetSymtab();
//.........这里部分代码省略.........