gprofng/src/Function.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 _DBE_FUNCTION_H
  22 #define _DBE_FUNCTION_H
  23
  24 // A Function object represents an individual function in a .o file.
  25
  26 #include "util.h"
  27 #include "Histable.h"
  28 #include "SourceFile.h"
  29
  30 class Module;
  31 class Symbol;
  32 class InlinedSubr;
  33 struct SrcInfo;
  34 struct PCInfo;
  35 template <class ITEM> class Vector;
  36
  37 const uint64_t FUNC_NO_SAVE = (uint64_t) - 1;
  38 const uint64_t FUNC_ROOT = (uint64_t) - 2;
  39
  40 enum
  41 {
  42   FUNC_FLAG_PLT = 1,
  43   FUNC_FLAG_DYNAMIC = 2,
  44   FUNC_FLAG_RESDER = 4, // set if derived function resolution has been done
  45   FUNC_FLAG_NO_OFFSET = 8, // set if disassembly should not show offset from function
  46   FUNC_FLAG_SIMULATED = 16, // not a real function like <Total>, <Unknown>, etc.
  47   FUNC_FLAG_NATIVE = 32, // no byte code for JMethod
  48   FUNC_NOT_JNI = 64, // a function name is not "Java_..."
  49   FUNC_JNI_CHECKED = 128 // already checked for "Java_..."
  50 };
  51
  52 const int MAXDBUF = 32768; // the longest demangled name handled
  53
  54 class Function : public Histable
  55 {
  56 public:
  57
  58   enum MPFuncTypes
  59   {
  60     MPF_DOALL,
  61     MPF_PAR,
  62     MPF_SECT,
  63     MPF_TASK,
  64     MPF_CLONE,
  65     MPF_OUTL
  66   };
  67
  68   Function (uint64_t _id);
  69   virtual ~Function ();
  70
  71   virtual uint64_t get_addr ();
  72   virtual char *get_name (NameFormat = NA);
  73   virtual Vector<Histable*> *get_comparable_objs ();
  74   virtual void set_name (char *);   // Set the demangled name
  75   virtual Histable *convertto (Histable_type type, Histable *obj = NULL);
  76
  77   virtual Histable_type
  78   get_type ()
  79   {
  80     return FUNCTION;
  81   };
  82
  83   virtual int64_t
  84   get_size ()
  85   {
  86     return size;
  87   };
  88
  89   void set_comparable_name (const char *string);
  90   void set_mangled_name (const char *string);
  91   void set_match_name (const char *string);
  92
  93   // Find any derived functions, and set their derivedNode
  94   void findDerivedFunctions ();
  95   void findKrakatoaDerivedFunctions ();
  96   void add_PC_info (uint64_t offset, int lineno, SourceFile *cur_src = NULL);
  97   void pushSrcFile (SourceFile* source, int lineno);
  98   SourceFile *popSrcFile ();
  99   int func_cmp (Function *func, SourceFile *srcContext = NULL);
 100   void copy_PCInfo (Function *f);
 101   DbeLine *mapPCtoLine (uint64_t addr, SourceFile *src = NULL);
 102   DbeInstr *mapLineToPc (DbeLine *dbeLine);
 103   DbeInstr *find_dbeinstr (int flag, uint64_t addr);
 104   DbeInstr *create_hide_instr (DbeInstr *instr);
 105   uint64_t find_previous_addr (uint64_t addr);
 106   SourceFile *getDefSrc ();
 107   char *getDefSrcName ();
 108   void setDefSrc (SourceFile *sf);
 109   void setLineFirst (int lineno);
 110   Vector<SourceFile*> *get_sources ();
 111
 112   char *
 113   get_mangled_name ()
 114   {
 115     return mangled_name;
 116   }
 117
 118   char *
 119   get_match_name ()
 120   {
 121     return match_name;
 122   }
 123
 124   inline Function *
 125   cardinal ()
 126   {
 127     return alias ? alias : this;
 128   }
 129
 130   unsigned int flags;       // FUNC_FLAG_*
 131   Module *module;           // pointer to module containing source
 132   int line_first;           // range of line numbers for function
 133   int line_last;
 134   int64_t size;             // size of the function in bytes
 135   uint64_t save_addr;       // used for detection of leaf routines
 136   DbeInstr *derivedNode;    // If derived from another function
 137   bool isOutlineFunction;   // if outline (save assumed)
 138   unsigned int chksum;      // check sum of instructions
 139   char *img_fname;          // file containing function image
 140   uint64_t img_offset;      // file offset of the image
 141   SourceFile *curr_srcfile;
 142   DbeLine *defaultDbeLine;
 143   Function *usrfunc;        // User function
 144   Function *alias;
 145   bool isUsed;
 146   bool isHideFunc;
 147   SourceFile *def_source;
 148   Function *indexStabsLink; // correspondent function for the .o file
 149   Symbol *elfSym;
 150   InlinedSubr *inlinedSubr;
 151   int inlinedSubrCnt;
 152
 153 private:
 154   DbeInstr **instHTable;    // hash table for DbeInstr
 155   int *addrIndexHTable;     // hash table for addrs index
 156   void setSource ();
 157   PCInfo *lookup_PCInfo (uint64_t offset);
 158   SrcInfo *new_srcInfo ();
 159
 160   char *mangled_name;
 161   char *match_name;      // mangled name, with globalization stripped
 162   char *comparable_name; // demangled name, with globalization and blanks stripped
 163   char *name_buf;
 164   NameFormat current_name_format;
 165   Vector<PCInfo*> *linetab;
 166   Vector<DbeInstr*> *instrs;
 167   Vector<uint64_t> *addrs;
 168   uint64_t instr_id;
 169   Vector<SourceFile*> *sources;
 170   SrcInfo *curr_srcinfo;    // the current source stack of the function
 171   SrcInfo *srcinfo_list;    // master list for SrcInfo
 172 };
 173
 174 class JMethod : public Function
 175 {
 176 public:
 177   JMethod (uint64_t _id);
 178   virtual ~JMethod ();
 179   virtual void set_name (char *);
 180   virtual uint64_t get_addr ();
 181
 182   void
 183   set_addr (Vaddr _addr)
 184   {
 185     addr = _addr;
 186   }
 187
 188   uint64_t
 189   get_mid ()
 190   {
 191     return mid;
 192   }
 193
 194   void
 195   set_mid (uint64_t _mid)
 196   {
 197     mid = _mid;
 198   }
 199
 200   char *
 201   get_signature ()
 202   {
 203     return signature;
 204   }
 205
 206   void
 207   set_signature (const char *s)
 208   {
 209     signature = dbe_strdup (s);
 210   }
 211
 212   // Returns true if func's name matches method's as its JNI implementation
 213   bool jni_match (Function *func);
 214
 215 private:
 216   uint64_t mid;
 217   Vaddr addr;
 218   char *signature;
 219   Function *jni_function;
 220 };
 221
 222 #endif /* _DBE_FUNCTION_H */