gprofng/src/Histable.h

   1 /* Copyright (C) 2021 Free Software Foundation, Inc.
   2    Contributed by Oracle.
   3
   4    This file is part of GNU Binutils.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3, or (at your option)
   9    any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, 51 Franklin Street - Fifth Floor, Boston,
  19    MA 02110-1301, USA.  */
  20
  21 #ifndef _HISTABLE_H
  22 #define _HISTABLE_H
  23
  24 //
  25 // The Histable class hierarchy is used to build up a representation of
  26 // the codeobjects (functions, modules, loadObjects, etc.) that make up the
  27 // text address space of a program.  The hierarchy is as follows:
  28 //
  29 //      Histable (public)
  30 //              LoadObject (public)
  31 //              Module (public)
  32 //              Function (public)
  33 //
  34 // Dataobjects are objects from the data address space of a program.
  35 // The reason for calling the base class "Histable" is because these
  36 // objects are all valid objects for computing histograms on.
  37
  38 // A Histable object represents an object in the program text or data.
  39
  40 #include "dbe_structs.h"
  41 #include "Emsg.h"
  42 #include "Expression.h"
  43
  44 class DataObject;
  45 class Function;
  46 class SourceFile;
  47 class DbeFile;
  48 class DbeLine;
  49 template <class ITEM> class Vector;
  50
  51 class Histable
  52 {
  53   friend class Hist_data;
  54 public:
  55
  56   enum Type
  57   {
  58     INSTR, LINE, FUNCTION, MODULE, LOADOBJECT,
  59     EADDR, MEMOBJ, INDEXOBJ, PAGE, DOBJECT,
  60     SOURCEFILE, IOACTFILE, IOACTVFD, IOCALLSTACK,
  61     HEAPCALLSTACK, EXPERIMENT, OTHER
  62   };
  63
  64   // NameFormat for functions and function based objects
  65
  66   enum NameFormat
  67   {
  68     NA, LONG, SHORT, MANGLED, SONAME = 0x10
  69   };
  70
  71   static NameFormat
  72   make_fmt (int fnfmt, bool sofmt = false)
  73   {
  74     return (NameFormat) (sofmt ? fnfmt | SONAME : fnfmt);
  75   }
  76
  77   static int
  78   fname_fmt (NameFormat fmt)
  79   {
  80     return (fmt & ~SONAME);
  81   }
  82
  83   static bool
  84   soname_fmt (NameFormat fmt)
  85   {
  86     return (fmt & SONAME);
  87   }
  88
  89   Histable ();
  90   char *dump ();
  91
  92   virtual ~Histable ();
  93
  94   virtual char *
  95   get_name (NameFormat = NA)
  96   {
  97     return name;    // Return the name of the object
  98   }
  99
 100   virtual void
 101   set_name (char * _name)
 102   {
 103     name = _name;
 104   }
 105
 106   virtual void set_name_from_context (Expression::Context *) { }
 107   virtual Type get_type () = 0;
 108
 109   virtual int64_t
 110   get_size ()
 111   {
 112     return 0;
 113   }
 114
 115   virtual uint64_t
 116   get_addr ()
 117   {
 118     return 0ULL;
 119   }
 120
 121   virtual Vector<Histable*> *get_comparable_objs ();
 122   Histable *get_compare_obj ();
 123
 124   virtual Histable *
 125   convertto (Type, Histable* = NULL)
 126   {
 127     return this;
 128   }
 129
 130   Vector<Histable*> *comparable_objs;
 131   int64_t id;       // A unique id of this object, within its specific Type
 132
 133 protected:
 134   char *name;       // Object name
 135   int phaseCompareIdx;
 136   void update_comparable_objs ();
 137   void dump_comparable_objs ();
 138   char *type_to_string ();
 139   void delete_comparable_objs ();
 140 };
 141
 142 typedef Histable::Type Histable_type;
 143
 144 // An Other object represents some random histable object
 145 class Other : public Histable
 146 {
 147 public:
 148
 149   virtual Type
 150   get_type ()
 151   {
 152     return OTHER;
 153   }
 154
 155   uint64_t value64;
 156   uint32_t tag;
 157 };
 158
 159 // DbeInstr represents an instruction.
 160 //
 161 //   Used by Analyzer for: Disassembly, PCs, Timeline, and Event tabs.
 162 //
 163 class DbeInstr : public Histable
 164 {
 165 public:
 166   DbeInstr (uint64_t _id, int _flags, Function *_func, uint64_t _addr);
 167
 168   virtual Type
 169   get_type ()
 170   {
 171     return INSTR;
 172   }
 173
 174   virtual char *get_name (NameFormat = NA);
 175   virtual int64_t get_size ();
 176   virtual uint64_t get_addr ();
 177   virtual Histable *convertto (Type type, Histable *obj = NULL);
 178   DbeLine *mapPCtoLine (SourceFile *sf);
 179   void add_inlined_info (StringBuilder *sb);
 180   char *get_descriptor ();
 181   int pc_cmp (DbeInstr *instr2);
 182
 183   uint64_t addr;
 184   uint64_t img_offset;      // file offset of the image
 185   int flags;
 186   Function *func;
 187   int lineno;
 188   int inlinedInd;
 189   int64_t size;
 190   bool isUsed;
 191
 192 private:
 193   NameFormat current_name_format;
 194 };
 195
 196 class DbeEA : public Histable
 197 {
 198 public:
 199
 200   DbeEA (DataObject *_dobj, Vaddr _eaddr)
 201   {
 202     dobj = _dobj;
 203     eaddr = _eaddr;
 204   };
 205
 206   virtual Type
 207   get_type ()
 208   {
 209     return EADDR;
 210   };
 211
 212   virtual int64_t
 213   get_size ()
 214   {
 215     return 1;
 216   };
 217
 218   virtual uint64_t
 219   get_addr ()
 220   {
 221     return eaddr;
 222   };
 223
 224   virtual char *get_name (NameFormat = NA);
 225   virtual Histable *convertto (Type type, Histable *obj = NULL);
 226
 227   DataObject *dobj;
 228   Vaddr eaddr;
 229 };
 230
 231 // DbeLine represents a line in a source file.
 232 //
 233 //   For each top-level DbeLine instance, there are three DbeLine subtypes:
 234 //
 235 //   A The top-level DbeLine is associated with a sourceFile & lineno, but
 236 //     not any particular function.  This form of DbeLine is used
 237 //     to represent Analyzer Source tab lines.
 238 //
 239 //   B Function-specific lines, those associated with a function in addition
 240 //     to the the sourceFile & lineno, are stored in a linked list.
 241 //     (see "dbeline_func_next").
 242 //     This subtype is used to differentiate a line found in #included source
 243 //     that is referenced by multiple functions.
 244 //     It is used in the Analyzer Lines tab.
 245 //
 246 //   C Function-specific "lines" that don't have line number info are referenced
 247 //     from each linked-list element's "dbeline_func_pseudo" field.
 248 //     This subtype is needed when a binary doesn't identify line numbers.
 249 //     It is used in the Analyzer Lines tab.
 250 //
 251 //   When the user switches views between tabs, a selected object in the old
 252 //   tab must be translated to an approprate object in the new tab.
 253 //   When switching to the Source Tab, the top-level DbeLine (dbeline_base)
 254 //     should be used.
 255 //   When switching to the Lines Tab, a function-specific dbeline_func_*
 256 //     should be used.
 257 //
 258
 259 class DbeLine : public Histable
 260 {
 261 public:
 262
 263   enum Flag
 264   {
 265     OMPPRAGMA = 1
 266   };
 267
 268   DbeLine (Function *_func, SourceFile *sf, int _lineno);
 269   virtual ~DbeLine ();
 270   virtual char *get_name (NameFormat = NA);
 271   virtual int64_t get_size ();
 272   virtual uint64_t get_addr ();
 273   virtual Histable *convertto (Type type, Histable *obj = NULL);
 274
 275   void init_Offset (uint64_t p_offset);
 276   int line_cmp (DbeLine *dbl);
 277
 278   virtual Type
 279   get_type ()
 280   {
 281     return LINE;
 282   }
 283
 284   void
 285   set_flag (Flag flag)
 286   {
 287     flags |= flag;
 288   }
 289
 290   bool
 291   is_set (Flag flag)
 292   {
 293     return (flags & flag) != 0;
 294   }
 295
 296   Function *func;           // note: will be NULL in the base (head) dbeline
 297   int lineno;
 298   int64_t size;
 299   SourceFile *sourceFile;   // Default source file
 300   SourceFile *include;      // included source file or NULL
 301
 302   DbeLine *dbeline_base;
 303   // Head of list, a dbeline associated with sourceFile & lineno, but not func:
 304   //   dbeline_base->lineno:                 non-zero
 305   //   dbeline_base->sourceFile:             non-null
 306   //   dbeline_base->func:                   NULL
 307   //   dbeline_base->dbeline_base:           this
 308   //   dbeline_base->dbeline_func_next:      first func-specific dbeline
 309
 310   DbeLine *dbeline_func_next;
 311   // If non-null, pointer to a function-specific dbeline where:
 312   //   dbeline_func_next->lineno:            same as dbeline_base->lineno
 313   //   dbeline_func_next->sourceFile:        same as dbeline_base->sourceFile
 314   //   dbeline_func_next->func:              pointer to unique function
 315   //   dbeline_func_next->dbeline_base:      head of the linked list.
 316   //   dbeline_func_next->dbeline_func_next: next function-specific dbeline.
 317
 318 private:
 319   int current_name_format;
 320   int64_t offset;
 321   int flags;
 322 };
 323
 324 class HistableFile : public Histable, public DbeMessages
 325 {
 326 public:
 327   HistableFile ();
 328
 329   bool isUsed;
 330   DbeFile *dbeFile;
 331 };
 332
 333 #endif /* _HISTABLE_H */