gdb/tracepoint.h

   1 /* Data structures associated with tracepoints in GDB.
   2    Copyright (C) 1997 Free Software Foundation, Inc.
   3
   4 This file is part of GDB.
   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 2 of the License, or
   9 (at your option) 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, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  19
  20 #if !defined (TRACEPOINT_H)
  21 #define TRACEPOINT_H 1
  22
  23 #if !defined (BREAKPOINT_H)
  24 enum enable { disabled, enabled };
  25 #endif
  26 /* The data structure for an action: */
  27 struct action_line
  28 {
  29   struct action_line *next;
  30   char *action;
  31 };
  32
  33 /* The data structure for a tracepoint: */
  34
  35 struct tracepoint
  36 {
  37   struct tracepoint *next;
  38
  39   enum enable enabled;
  40
  41 #if 0
  42   /* Type of tracepoint (MVS FIXME: needed?). */
  43   enum tptype type;
  44
  45   /* What to do with this tracepoint after we hit it MVS FIXME: needed?). */
  46   enum tpdisp disposition;
  47 #endif
  48   /* Number assigned to distinguish tracepoints.  */
  49   int number;
  50
  51   /* Address to trace at, or NULL if not an instruction tracepoint (MVS ?). */
  52   CORE_ADDR address;
  53
  54   /* Line number of this address.  Only matters if address is non-NULL.  */
  55   int line_number;
  56
  57   /* Source file name of this address.  Only matters if address is non-NULL. */
  58   char *source_file;
  59
  60   /* Number of times this tracepoint should single-step
  61      and collect additional data */
  62   long step_count;
  63
  64   /* Number of times this tracepoint should be hit before disabling/ending. */
  65   int pass_count;
  66
  67   /* Chain of action lines to execute when this tracepoint is hit. */
  68   struct action_line *actions;
  69
  70   /* Conditional (MVS ?).  */
  71   struct expression *cond;
  72
  73   /* String we used to set the tracepoint (malloc'd).  Only matters if
  74      address is non-NULL.  */
  75   char *addr_string;
  76
  77   /* Language we used to set the tracepoint.  */
  78   enum language language;
  79
  80   /* Input radix we used to set the tracepoint.  */
  81   int input_radix;
  82
  83   /* Count of the number of times this tracepoint was taken, dumped
  84      with the info, but not used for anything else.  Useful for
  85      seeing how many times you hit a tracepoint prior to the program
  86      aborting, so you can back up to just before the abort.  */
  87   int hit_count;
  88
  89   /* Thread number for thread-specific tracepoint, or -1 if don't care */
  90   int thread;
  91
  92   /* BFD section, in case of overlays:
  93      no, I don't know if tracepoints are really gonna work with overlays.  */
  94   asection *section;
  95 };
  96
  97 enum actionline_type
  98 {
  99   BADLINE  = -1,
 100   GENERIC  =  0,
 101   END      =  1,
 102   STEPPING =  2,
 103 };
 104
 105
 106 /* The tracepont chain of all tracepoints */
 107
 108 extern struct tracepoint *tracepoint_chain;
 109
 110 extern unsigned long trace_running_p;
 111
 112 /* A hook used to notify the UI of tracepoint operations */
 113
 114 void (*create_tracepoint_hook) PARAMS ((struct tracepoint *));
 115 void (*delete_tracepoint_hook) PARAMS ((struct tracepoint *));
 116 void (*modify_tracepoint_hook) PARAMS ((struct tracepoint *));
 117 void (*trace_find_hook) PARAMS ((char *arg, int from_tty));
 118 void (*trace_start_stop_hook) PARAMS ((int start, int from_tty));
 119
 120 struct tracepoint *get_tracepoint_by_number PARAMS ((char **));
 121 int get_traceframe_number PARAMS ((void));
 122 void  free_actions PARAMS((struct tracepoint *));
 123 enum actionline_type validate_actionline PARAMS((char **,
 124                                                         struct tracepoint *));
 125
 126
 127 /* Walk the following statement or block through all tracepoints.
 128    ALL_TRACEPOINTS_SAFE does so even if the statment deletes the current
 129    breakpoint.  */
 130
 131 #define ALL_TRACEPOINTS(t)  for (t = tracepoint_chain; t; t = t->next)
 132
 133 #define ALL_TRACEPOINTS_SAFE(t,tmp)     \
 134         for (t = tracepoint_chain;      \
 135              t ? (tmp = t->next, 1) : 0;\
 136              t = tmp)
 137 #endif /* TRACEPOINT_H */