1f7460716b
Make breakpoint setting by file and line much more efficient by only looking for inlined breakpoint locations if we are setting a breakpoint in anything but a source implementation file. Implementing this complex for a many reasons. Turns out that parsing compile units lazily had some issues with respect to how we need to do things with DWARF in .o files. So the fixes in the checkin for this makes these changes: - Add a new setting called "target.inline-breakpoint-strategy" which can be set to "never", "always", or "headers". "never" will never try and set any inlined breakpoints (fastest). "always" always looks for inlined breakpoint locations (slowest, but most accurate). "headers", which is the default setting, will only look for inlined breakpoint locations if the breakpoint is set in what are consudered to be header files, which is realy defined as "not in an implementation source file". - modify the breakpoint setting by file and line to check the current "target.inline-breakpoint-strategy" setting and act accordingly - Modify compile units to be able to get their language and other info lazily. This allows us to create compile units from the debug map and not have to fill all of the details in, and then lazily discover this information as we go on debuggging. This is needed to avoid parsing all .o files when setting breakpoints in implementation only files (no inlines). Otherwise we would need to parse the .o file, the object file (mach-o in our case) and the symbol file (DWARF in the object file) just to see what the compile unit was. - modify the "SymbolFileDWARFDebugMap" to subclass lldb_private::Module so that the virtual "GetObjectFile()" and "GetSymbolVendor()" functions can be intercepted when the .o file contenst are later lazilly needed. Prior to this fix, when we first instantiated the "SymbolFileDWARFDebugMap" class, we would also make modules, object files and symbol files for every .o file in the debug map because we needed to fix up the sections in the .o files with information that is in the executable debug map. Now we lazily do this in the DebugMapModule::GetObjectFile() Cleaned up header includes a bit as well. llvm-svn: 162860
270 lines
10 KiB
C++
270 lines
10 KiB
C++
//===-- SymbolFileDWARFDebugMap.h ------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SymbolFileDWARF_SymbolFileDWARFDebugMap_h_
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#define SymbolFileDWARF_SymbolFileDWARFDebugMap_h_
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#include <vector>
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#include <bitset>
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#include "clang/AST/CharUnits.h"
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#include "lldb/Symbol/SymbolFile.h"
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#include "UniqueDWARFASTType.h"
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class SymbolFileDWARF;
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class DWARFCompileUnit;
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class DWARFDebugInfoEntry;
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class DWARFDeclContext;
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class DebugMapModule;
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class SymbolFileDWARFDebugMap : public lldb_private::SymbolFile
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{
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public:
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//------------------------------------------------------------------
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// Static Functions
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//------------------------------------------------------------------
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static void
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Initialize();
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static void
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Terminate();
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static const char *
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GetPluginNameStatic();
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static const char *
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GetPluginDescriptionStatic();
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static lldb_private::SymbolFile *
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CreateInstance (lldb_private::ObjectFile* obj_file);
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//------------------------------------------------------------------
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// Constructors and Destructors
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//------------------------------------------------------------------
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SymbolFileDWARFDebugMap (lldb_private::ObjectFile* ofile);
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virtual ~ SymbolFileDWARFDebugMap ();
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virtual uint32_t CalculateAbilities ();
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virtual void InitializeObject();
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//------------------------------------------------------------------
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// Compile Unit function calls
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//------------------------------------------------------------------
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virtual uint32_t GetNumCompileUnits ();
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virtual lldb::CompUnitSP ParseCompileUnitAtIndex (uint32_t index);
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virtual lldb::LanguageType ParseCompileUnitLanguage (const lldb_private::SymbolContext& sc);
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virtual size_t ParseCompileUnitFunctions (const lldb_private::SymbolContext& sc);
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virtual bool ParseCompileUnitLineTable (const lldb_private::SymbolContext& sc);
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virtual bool ParseCompileUnitSupportFiles (const lldb_private::SymbolContext& sc, lldb_private::FileSpecList &support_files);
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virtual size_t ParseFunctionBlocks (const lldb_private::SymbolContext& sc);
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virtual size_t ParseTypes (const lldb_private::SymbolContext& sc);
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virtual size_t ParseVariablesForContext (const lldb_private::SymbolContext& sc);
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virtual lldb_private::Type* ResolveTypeUID (lldb::user_id_t type_uid);
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virtual clang::DeclContext* GetClangDeclContextContainingTypeUID (lldb::user_id_t type_uid);
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virtual clang::DeclContext* GetClangDeclContextForTypeUID (const lldb_private::SymbolContext &sc, lldb::user_id_t type_uid);
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virtual lldb::clang_type_t ResolveClangOpaqueTypeDefinition (lldb::clang_type_t clang_Type);
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virtual uint32_t ResolveSymbolContext (const lldb_private::Address& so_addr, uint32_t resolve_scope, lldb_private::SymbolContext& sc);
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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);
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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);
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virtual uint32_t FindGlobalVariables (const lldb_private::RegularExpression& regex, bool append, uint32_t max_matches, lldb_private::VariableList& variables);
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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);
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virtual uint32_t FindFunctions (const lldb_private::RegularExpression& regex, bool include_inlines, bool append, lldb_private::SymbolContextList& sc_list);
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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);
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virtual lldb_private::ClangNamespaceDecl
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FindNamespace (const lldb_private::SymbolContext& sc,
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const lldb_private::ConstString &name,
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const lldb_private::ClangNamespaceDecl *parent_namespace_decl);
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//------------------------------------------------------------------
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// ClangASTContext callbacks for external source lookups.
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//------------------------------------------------------------------
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static void
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CompleteTagDecl (void *baton, clang::TagDecl *);
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static void
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CompleteObjCInterfaceDecl (void *baton, clang::ObjCInterfaceDecl *);
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static bool
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LayoutRecordType (void *baton,
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const clang::RecordDecl *record_decl,
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uint64_t &size,
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uint64_t &alignment,
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llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets,
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llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets,
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llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets);
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//------------------------------------------------------------------
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// PluginInterface protocol
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//------------------------------------------------------------------
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virtual const char *
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GetPluginName();
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virtual const char *
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GetShortPluginName();
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virtual uint32_t
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GetPluginVersion();
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protected:
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enum
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{
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kHaveInitializedOSOs = (1 << 0),
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kNumFlags
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};
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friend class SymbolFileDWARF;
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friend class DebugMapModule;
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//------------------------------------------------------------------
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// Class specific types
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//------------------------------------------------------------------
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struct CompileUnitInfo
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{
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lldb_private::FileSpec so_file;
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lldb_private::FileSpec oso_file;
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lldb_private::ConstString oso_object; // for archives this will be the .o file in the "oso_file"
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// lldb_private::Symbol *so_symbol;
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// lldb_private::Symbol *oso_symbol;
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// lldb_private::Symbol *last_symbol;
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uint32_t first_symbol_index;
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uint32_t last_symbol_index;
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uint32_t first_symbol_id;
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uint32_t last_symbol_id;
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lldb::ModuleSP oso_module_sp;
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lldb::CompUnitSP oso_compile_unit_sp;
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// SymbolFileDWARF *oso_symfile;
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bool symbol_file_supported;
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CompileUnitInfo() :
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so_file (),
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oso_file (),
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oso_object (),
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// so_symbol (NULL),
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// oso_symbol (NULL),
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// last_symbol (NULL),
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first_symbol_index (UINT32_MAX),
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last_symbol_index (UINT32_MAX),
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first_symbol_id (UINT32_MAX),
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last_symbol_id (UINT32_MAX),
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oso_module_sp (),
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oso_compile_unit_sp (),
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// oso_symfile (NULL),
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symbol_file_supported (true)
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{
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}
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};
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//------------------------------------------------------------------
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// Protected Member Functions
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//------------------------------------------------------------------
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void
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InitOSO ();
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static uint32_t
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GetOSOIndexFromUserID (lldb::user_id_t uid)
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{
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return (uint32_t)((uid >> 32ull) - 1ull);
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}
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bool
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GetFileSpecForSO (uint32_t oso_idx, lldb_private::FileSpec &file_spec);
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CompileUnitInfo *
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GetCompUnitInfo (const lldb_private::SymbolContext& sc);
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CompileUnitInfo *
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GetCompUnitInfo (const lldb_private::Module *oso_module);
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lldb_private::Module *
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GetModuleByCompUnitInfo (CompileUnitInfo *comp_unit_info);
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lldb_private::Module *
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GetModuleByOSOIndex (uint32_t oso_idx);
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lldb_private::ObjectFile *
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GetObjectFileByCompUnitInfo (CompileUnitInfo *comp_unit_info);
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lldb_private::ObjectFile *
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GetObjectFileByOSOIndex (uint32_t oso_idx);
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uint32_t
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GetCompUnitInfoIndex (const CompileUnitInfo *comp_unit_info);
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SymbolFileDWARF *
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GetSymbolFile (const lldb_private::SymbolContext& sc);
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SymbolFileDWARF *
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GetSymbolFileByCompUnitInfo (CompileUnitInfo *comp_unit_info);
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SymbolFileDWARF *
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GetSymbolFileByOSOIndex (uint32_t oso_idx);
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CompileUnitInfo *
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GetCompileUnitInfoForSymbolWithIndex (uint32_t symbol_idx, uint32_t *oso_idx_ptr);
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CompileUnitInfo *
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GetCompileUnitInfoForSymbolWithID (lldb::user_id_t symbol_id, uint32_t *oso_idx_ptr);
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static int
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SymbolContainsSymbolWithIndex (uint32_t *symbol_idx_ptr, const CompileUnitInfo *comp_unit_info);
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static int
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SymbolContainsSymbolWithID (lldb::user_id_t *symbol_idx_ptr, const CompileUnitInfo *comp_unit_info);
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uint32_t
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PrivateFindGlobalVariables (const lldb_private::ConstString &name,
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const lldb_private::ClangNamespaceDecl *namespace_decl,
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const std::vector<uint32_t> &name_symbol_indexes,
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uint32_t max_matches,
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lldb_private::VariableList& variables);
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void
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SetCompileUnit (SymbolFileDWARF *oso_dwarf, const lldb::CompUnitSP &cu_sp);
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lldb::CompUnitSP
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GetCompileUnit (SymbolFileDWARF *oso_dwarf);
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lldb::TypeSP
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FindDefinitionTypeForDWARFDeclContext (const DWARFDeclContext &die_decl_ctx);
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bool
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Supports_DW_AT_APPLE_objc_complete_type (SymbolFileDWARF *skip_dwarf_oso);
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lldb::TypeSP
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FindCompleteObjCDefinitionTypeForDIE (const DWARFDebugInfoEntry *die,
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const lldb_private::ConstString &type_name,
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bool must_be_implementation);
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UniqueDWARFASTTypeMap &
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GetUniqueDWARFASTTypeMap ()
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{
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return m_unique_ast_type_map;
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}
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//------------------------------------------------------------------
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// Member Variables
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//------------------------------------------------------------------
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std::bitset<kNumFlags> m_flags;
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std::vector<CompileUnitInfo> m_compile_unit_infos;
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std::vector<uint32_t> m_func_indexes; // Sorted by address
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std::vector<uint32_t> m_glob_indexes;
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UniqueDWARFASTTypeMap m_unique_ast_type_map;
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lldb_private::LazyBool m_supports_DW_AT_APPLE_objc_complete_type;
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};
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#endif // #ifndef SymbolFileDWARF_SymbolFileDWARFDebugMap_h_
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