1 files changed, 420 insertions, 0 deletions

diff --git a/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.h b/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.h
new file mode 100644
index 000000000000..06330b98dc19
--- /dev/null
+++ b/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.h
@@ -0,0 +1,420 @@
+//===-- SymbolFileDWARFDebugMap.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_SymbolFileDWARFDebugMap_h_
+#define SymbolFileDWARF_SymbolFileDWARFDebugMap_h_
+
+
+#include <vector>
+#include <bitset>
+
+#include "clang/AST/CharUnits.h"
+
+#include "lldb/Core/RangeMap.h"
+#include "lldb/Symbol/SymbolFile.h"
+
+#include "UniqueDWARFASTType.h"
+
+class SymbolFileDWARF;
+class DWARFCompileUnit;
+class DWARFDebugAranges;
+class DWARFDebugInfoEntry;
+class DWARFDeclContext;
+class DebugMapModule;
+
+class SymbolFileDWARFDebugMap : public lldb_private::SymbolFile
+{
+public:
+    
+    //------------------------------------------------------------------
+    // Static Functions
+    //------------------------------------------------------------------
+    static void
+    Initialize();
+
+    static void
+    Terminate();
+
+    static lldb_private::ConstString
+    GetPluginNameStatic();
+
+    static const char *
+    GetPluginDescriptionStatic();
+
+    static lldb_private::SymbolFile *
+    CreateInstance (lldb_private::ObjectFile* obj_file);
+
+    //------------------------------------------------------------------
+    // Constructors and Destructors
+    //------------------------------------------------------------------
+                            SymbolFileDWARFDebugMap (lldb_private::ObjectFile* ofile);
+    virtual               ~ SymbolFileDWARFDebugMap ();
+
+    virtual uint32_t        CalculateAbilities ();
+
+    virtual void            InitializeObject();
+
+    //------------------------------------------------------------------
+    // Compile Unit function calls
+    //------------------------------------------------------------------
+    virtual uint32_t        GetNumCompileUnits ();
+    virtual lldb::CompUnitSP ParseCompileUnitAtIndex (uint32_t index);
+
+    virtual lldb::LanguageType ParseCompileUnitLanguage (const lldb_private::SymbolContext& sc);
+    virtual size_t          ParseCompileUnitFunctions (const lldb_private::SymbolContext& sc);
+    virtual bool            ParseCompileUnitLineTable (const lldb_private::SymbolContext& sc);
+    virtual bool            ParseCompileUnitSupportFiles (const lldb_private::SymbolContext& sc, lldb_private::FileSpecList &support_files);
+    virtual size_t          ParseFunctionBlocks (const lldb_private::SymbolContext& sc);
+    virtual size_t          ParseTypes (const lldb_private::SymbolContext& sc);
+    virtual size_t          ParseVariablesForContext (const lldb_private::SymbolContext& sc);
+
+    virtual lldb_private::Type* ResolveTypeUID (lldb::user_id_t type_uid);
+    virtual clang::DeclContext* GetClangDeclContextContainingTypeUID (lldb::user_id_t type_uid);
+    virtual clang::DeclContext* GetClangDeclContextForTypeUID (const lldb_private::SymbolContext &sc, lldb::user_id_t type_uid);
+    virtual bool            ResolveClangOpaqueTypeDefinition (lldb_private::ClangASTType& clang_type);
+    virtual uint32_t        ResolveSymbolContext (const lldb_private::Address& so_addr, uint32_t resolve_scope, lldb_private::SymbolContext& sc);
+    virtual uint32_t        ResolveSymbolContext (const lldb_private::FileSpec& file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, lldb_private::SymbolContextList& sc_list);
+    virtual uint32_t        FindGlobalVariables (const lldb_private::ConstString &name, const lldb_private::ClangNamespaceDecl *namespace_decl, bool append, uint32_t max_matches, lldb_private::VariableList& variables);
+    virtual uint32_t        FindGlobalVariables (const lldb_private::RegularExpression& regex, bool append, uint32_t max_matches, lldb_private::VariableList& variables);
+    virtual uint32_t        FindFunctions (const lldb_private::ConstString &name, const lldb_private::ClangNamespaceDecl *namespace_decl, uint32_t name_type_mask, bool include_inlines, bool append, lldb_private::SymbolContextList& sc_list);
+    virtual uint32_t        FindFunctions (const lldb_private::RegularExpression& regex, bool include_inlines, bool append, lldb_private::SymbolContextList& sc_list);
+    virtual uint32_t        FindTypes (const lldb_private::SymbolContext& sc, const lldb_private::ConstString &name, const lldb_private::ClangNamespaceDecl *namespace_decl, bool append, uint32_t max_matches, lldb_private::TypeList& types);
+    virtual lldb_private::ClangNamespaceDecl
+                            FindNamespace (const lldb_private::SymbolContext& sc,
+                                           const lldb_private::ConstString &name,
+                                           const lldb_private::ClangNamespaceDecl *parent_namespace_decl);
+    virtual size_t          GetTypes (lldb_private::SymbolContextScope *sc_scope,
+                                      uint32_t type_mask,
+                                      lldb_private::TypeList &type_list);
+
+
+    //------------------------------------------------------------------
+    // ClangASTContext callbacks for external source lookups.
+    //------------------------------------------------------------------
+    static void
+    CompleteTagDecl (void *baton, clang::TagDecl *);
+    
+    static void
+    CompleteObjCInterfaceDecl (void *baton, clang::ObjCInterfaceDecl *);
+    
+    static bool 
+    LayoutRecordType (void *baton, 
+                      const clang::RecordDecl *record_decl,
+                      uint64_t &size, 
+                      uint64_t &alignment,
+                      llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets,
+                      llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets,
+                      llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets);
+
+
+    //------------------------------------------------------------------
+    // PluginInterface protocol
+    //------------------------------------------------------------------
+    virtual lldb_private::ConstString
+    GetPluginName();
+
+    virtual uint32_t
+    GetPluginVersion();
+
+protected:
+    enum
+    {
+        kHaveInitializedOSOs = (1 << 0),
+        kNumFlags
+    };
+
+    friend class DWARFCompileUnit;
+    friend class SymbolFileDWARF;
+    friend class DebugMapModule;
+    struct OSOInfo
+    {
+        lldb::ModuleSP module_sp;
+        
+        OSOInfo() :
+            module_sp ()
+        {
+        }
+    };
+    
+    typedef std::shared_ptr<OSOInfo> OSOInfoSP;
+
+    typedef lldb_private::RangeDataVector<lldb::addr_t, lldb::addr_t, lldb::addr_t> FileRangeMap;
+
+    //------------------------------------------------------------------
+    // Class specific types
+    //------------------------------------------------------------------
+    struct CompileUnitInfo
+    {
+        lldb_private::FileSpec so_file;
+        lldb_private::ConstString oso_path;
+        lldb_private::TimeValue oso_mod_time;
+        OSOInfoSP oso_sp;
+        lldb::CompUnitSP compile_unit_sp;
+        uint32_t first_symbol_index;
+        uint32_t last_symbol_index;
+        uint32_t first_symbol_id;
+        uint32_t last_symbol_id;
+        FileRangeMap file_range_map;
+        bool file_range_map_valid;
+        
+
+        CompileUnitInfo() :
+            so_file (),
+            oso_path (),
+            oso_mod_time (),
+            oso_sp (),
+            compile_unit_sp (),
+            first_symbol_index (UINT32_MAX),
+            last_symbol_index (UINT32_MAX),
+            first_symbol_id (UINT32_MAX),
+            last_symbol_id (UINT32_MAX),
+            file_range_map (),
+            file_range_map_valid (false)
+        {
+        }
+        
+        const FileRangeMap &
+        GetFileRangeMap(SymbolFileDWARFDebugMap *exe_symfile);
+    };
+
+    //------------------------------------------------------------------
+    // Protected Member Functions
+    //------------------------------------------------------------------
+    void
+    InitOSO ();
+
+    static uint32_t
+    GetOSOIndexFromUserID (lldb::user_id_t uid)
+    {
+        return (uint32_t)((uid >> 32ull) - 1ull);
+    }
+    
+    static SymbolFileDWARF *
+    GetSymbolFileAsSymbolFileDWARF (SymbolFile *sym_file);
+    
+    bool
+    GetFileSpecForSO (uint32_t oso_idx, lldb_private::FileSpec &file_spec);
+
+    CompileUnitInfo *
+    GetCompUnitInfo (const lldb_private::SymbolContext& sc);
+
+    size_t
+    GetCompUnitInfosForModule (const lldb_private::Module *oso_module,
+                               std::vector<CompileUnitInfo *>& cu_infos);
+    
+    lldb_private::Module *
+    GetModuleByCompUnitInfo (CompileUnitInfo *comp_unit_info);
+
+    lldb_private::Module *
+    GetModuleByOSOIndex (uint32_t oso_idx);
+
+    lldb_private::ObjectFile *
+    GetObjectFileByCompUnitInfo (CompileUnitInfo *comp_unit_info);
+
+    lldb_private::ObjectFile *
+    GetObjectFileByOSOIndex (uint32_t oso_idx);
+
+    uint32_t
+    GetCompUnitInfoIndex (const CompileUnitInfo *comp_unit_info);
+
+    SymbolFileDWARF *
+    GetSymbolFile (const lldb_private::SymbolContext& sc);
+
+    SymbolFileDWARF *
+    GetSymbolFileByCompUnitInfo (CompileUnitInfo *comp_unit_info);
+
+    SymbolFileDWARF *
+    GetSymbolFileByOSOIndex (uint32_t oso_idx);
+
+    CompileUnitInfo *
+    GetCompileUnitInfoForSymbolWithIndex (uint32_t symbol_idx, uint32_t *oso_idx_ptr);
+    
+    CompileUnitInfo *
+    GetCompileUnitInfoForSymbolWithID (lldb::user_id_t symbol_id, uint32_t *oso_idx_ptr);
+
+    static int
+    SymbolContainsSymbolWithIndex (uint32_t *symbol_idx_ptr, const CompileUnitInfo *comp_unit_info);
+
+    static int
+    SymbolContainsSymbolWithID (lldb::user_id_t *symbol_idx_ptr, const CompileUnitInfo *comp_unit_info);
+
+    uint32_t
+    PrivateFindGlobalVariables (const lldb_private::ConstString &name,
+                                const lldb_private::ClangNamespaceDecl *namespace_decl,
+                                const std::vector<uint32_t> &name_symbol_indexes,
+                                uint32_t max_matches,
+                                lldb_private::VariableList& variables);
+
+
+    void
+    SetCompileUnit (SymbolFileDWARF *oso_dwarf, const lldb::CompUnitSP &cu_sp);
+
+    lldb::CompUnitSP
+    GetCompileUnit (SymbolFileDWARF *oso_dwarf);
+    
+    CompileUnitInfo *
+    GetCompileUnitInfo (SymbolFileDWARF *oso_dwarf);
+
+    lldb::TypeSP
+    FindDefinitionTypeForDWARFDeclContext (const DWARFDeclContext &die_decl_ctx);    
+
+    bool
+    Supports_DW_AT_APPLE_objc_complete_type (SymbolFileDWARF *skip_dwarf_oso);
+
+    lldb::TypeSP
+    FindCompleteObjCDefinitionTypeForDIE (const DWARFDebugInfoEntry *die, 
+                                          const lldb_private::ConstString &type_name,
+                                          bool must_be_implementation);
+    
+
+    UniqueDWARFASTTypeMap &
+    GetUniqueDWARFASTTypeMap ()
+    {
+        return m_unique_ast_type_map;
+    }
+    
+    
+    //------------------------------------------------------------------
+    // OSOEntry
+    //------------------------------------------------------------------
+    class OSOEntry
+    {
+    public:
+        
+        OSOEntry () :
+        m_exe_sym_idx (UINT32_MAX),
+        m_oso_file_addr (LLDB_INVALID_ADDRESS)
+        {
+        }
+        
+        OSOEntry (uint32_t exe_sym_idx,
+                  lldb::addr_t oso_file_addr) :
+        m_exe_sym_idx (exe_sym_idx),
+        m_oso_file_addr (oso_file_addr)
+        {
+        }
+        
+        uint32_t
+        GetExeSymbolIndex () const
+        {
+            return m_exe_sym_idx;
+        }
+        
+        bool
+        operator < (const OSOEntry &rhs) const
+        {
+            return m_exe_sym_idx < rhs.m_exe_sym_idx;
+        }
+        
+        lldb::addr_t
+        GetOSOFileAddress () const
+        {
+            return m_oso_file_addr;
+        }
+        
+        void
+        SetOSOFileAddress (lldb::addr_t oso_file_addr)
+        {
+            m_oso_file_addr = oso_file_addr;
+        }
+    protected:
+        uint32_t m_exe_sym_idx;
+        lldb::addr_t m_oso_file_addr;
+    };
+
+    typedef lldb_private::RangeDataVector<lldb::addr_t, lldb::addr_t, OSOEntry> DebugMap;
+
+    //------------------------------------------------------------------
+    // Member Variables
+    //------------------------------------------------------------------
+    std::bitset<kNumFlags> m_flags;
+    std::vector<CompileUnitInfo> m_compile_unit_infos;
+    std::vector<uint32_t> m_func_indexes;   // Sorted by address
+    std::vector<uint32_t> m_glob_indexes;
+    std::map<lldb_private::ConstString, OSOInfoSP> m_oso_map;
+    UniqueDWARFASTTypeMap m_unique_ast_type_map;
+    lldb_private::LazyBool m_supports_DW_AT_APPLE_objc_complete_type;
+    DebugMap m_debug_map;
+    
+    //------------------------------------------------------------------
+    // When an object file from the debug map gets parsed in
+    // SymbolFileDWARF, it needs to tell the debug map about the object
+    // files addresses by calling this function once for each N_FUN,
+    // N_GSYM and N_STSYM and after all entries in the debug map have
+    // been matched up, FinalizeOSOFileRanges() should be called.
+    //------------------------------------------------------------------
+    bool
+    AddOSOFileRange (CompileUnitInfo *cu_info,
+                     lldb::addr_t exe_file_addr,
+                     lldb::addr_t oso_file_addr,
+                     lldb::addr_t oso_byte_size);
+    
+    //------------------------------------------------------------------
+    // Called after calling AddOSOFileRange() for each object file debug
+    // map entry to finalize the info for the unlinked compile unit.
+    //------------------------------------------------------------------
+    void
+    FinalizeOSOFileRanges (CompileUnitInfo *cu_info);
+
+    //------------------------------------------------------------------
+    /// Convert \a addr from a .o file address, to an executable address.
+    ///
+    /// @param[in] addr
+    ///     A section offset address from a .o file
+    ///
+    /// @return
+    ///     Returns true if \a addr was converted to be an executable
+    ///     section/offset address, false otherwise.
+    //------------------------------------------------------------------
+    bool
+    LinkOSOAddress (lldb_private::Address &addr);
+    
+    //------------------------------------------------------------------
+    /// Convert a .o file "file address" to an executable "file address".
+    ///
+    /// @param[in] oso_symfile
+    ///     The DWARF symbol file that contains \a oso_file_addr
+    ///
+    /// @param[in] oso_file_addr
+    ///     A .o file "file address" to convert.
+    ///
+    /// @return
+    ///     LLDB_INVALID_ADDRESS if \a oso_file_addr is not in the
+    ///     linked executable, otherwise a valid "file address" from the
+    ///     linked executable that contains the debug map.
+    //------------------------------------------------------------------
+    lldb::addr_t
+    LinkOSOFileAddress (SymbolFileDWARF *oso_symfile, lldb::addr_t oso_file_addr);
+            
+    //------------------------------------------------------------------
+    /// Given a line table full of lines with "file adresses" that are
+    /// for a .o file represented by \a oso_symfile, link a new line table
+    /// and return it.
+    ///
+    /// @param[in] oso_symfile
+    ///     The DWARF symbol file that produced the \a line_table
+    ///
+    /// @param[in] addr
+    ///     A section offset address from a .o file
+    ///
+    /// @return
+    ///     Returns a valid line table full of linked addresses, or NULL
+    ///     if none of the line table adresses exist in the main
+    ///     executable.
+    //------------------------------------------------------------------
+    lldb_private::LineTable *
+    LinkOSOLineTable (SymbolFileDWARF *oso_symfile,
+                      lldb_private::LineTable *line_table);
+    
+    size_t
+    AddOSOARanges (SymbolFileDWARF* dwarf2Data,
+                   DWARFDebugAranges* debug_aranges);
+};
+
+#endif // #ifndef SymbolFileDWARF_SymbolFileDWARFDebugMap_h_