gdb/tracepoint.h

   1 /* Data structures associated with tracepoints in GDB.
   2    Copyright (C) 1997, 1999 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,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #if !defined (TRACEPOINT_H)
  22 #define TRACEPOINT_H 1
  23
  24 #if !defined (BREAKPOINT_H)
  25 enum enable
  26   {
  27     disabled, enabled
  28   };
  29 #endif
  30 /* The data structure for an action: */
  31 struct action_line
  32   {
  33     struct action_line *next;
  34     char *action;
  35   };
  36
  37 /* The data structure for a tracepoint: */
  38
  39 struct tracepoint
  40   {
  41     struct tracepoint *next;
  42
  43     enum enable enabled;
  44
  45 #if 0
  46     /* Type of tracepoint (MVS FIXME: needed?). */
  47     enum tptype type;
  48
  49     /* What to do with this tracepoint after we hit it MVS FIXME: needed?). */
  50     enum tpdisp disposition;
  51 #endif
  52     /* Number assigned to distinguish tracepoints.  */
  53     int number;
  54
  55     /* Address to trace at, or NULL if not an instruction tracepoint (MVS ?). */
  56     CORE_ADDR address;
  57
  58     /* Line number of this address.  Only matters if address is non-NULL.  */
  59     int line_number;
  60
  61     /* Source file name of this address.  Only matters if address is non-NULL. */
  62     char *source_file;
  63
  64     /* Number of times this tracepoint should single-step
  65        and collect additional data */
  66     long step_count;
  67
  68     /* Number of times this tracepoint should be hit before disabling/ending. */
  69     int pass_count;
  70
  71     /* Chain of action lines to execute when this tracepoint is hit. */
  72     struct action_line *actions;
  73
  74     /* Conditional (MVS ?).  */
  75     struct expression *cond;
  76
  77     /* String we used to set the tracepoint (malloc'd).  Only matters if
  78        address is non-NULL.  */
  79     char *addr_string;
  80
  81     /* Language we used to set the tracepoint.  */
  82     enum language language;
  83
  84     /* Input radix we used to set the tracepoint.  */
  85     int input_radix;
  86
  87     /* Count of the number of times this tracepoint was taken, dumped
  88        with the info, but not used for anything else.  Useful for
  89        seeing how many times you hit a tracepoint prior to the program
  90        aborting, so you can back up to just before the abort.  */
  91     int hit_count;
  92
  93     /* Thread number for thread-specific tracepoint, or -1 if don't care */
  94     int thread;
  95
  96     /* BFD section, in case of overlays:
  97        no, I don't know if tracepoints are really gonna work with overlays.  */
  98     asection *section;
  99   };
 100
 101 enum actionline_type
 102   {
 103     BADLINE = -1,
 104     GENERIC = 0,
 105     END = 1,
 106     STEPPING = 2
 107   };
 108
 109
 110 /* The tracepont chain of all tracepoints */
 111
 112 extern struct tracepoint *tracepoint_chain;
 113
 114 extern unsigned long trace_running_p;
 115
 116 /* A hook used to notify the UI of tracepoint operations */
 117
 118 void (*create_tracepoint_hook) PARAMS ((struct tracepoint *));
 119 void (*delete_tracepoint_hook) PARAMS ((struct tracepoint *));
 120 void (*modify_tracepoint_hook) PARAMS ((struct tracepoint *));
 121 void (*trace_find_hook) PARAMS ((char *arg, int from_tty));
 122 void (*trace_start_stop_hook) PARAMS ((int start, int from_tty));
 123
 124 struct tracepoint *get_tracepoint_by_number PARAMS ((char **, int, int));
 125 int get_traceframe_number PARAMS ((void));
 126 void free_actions PARAMS ((struct tracepoint *));
 127 enum actionline_type validate_actionline PARAMS ((char **,
 128                                                   struct tracepoint *));
 129
 130
 131 /* Walk the following statement or block through all tracepoints.
 132    ALL_TRACEPOINTS_SAFE does so even if the statment deletes the current
 133    breakpoint.  */
 134
 135 #define ALL_TRACEPOINTS(t)  for (t = tracepoint_chain; t; t = t->next)
 136
 137 #define ALL_TRACEPOINTS_SAFE(t,tmp)     \
 138         for (t = tracepoint_chain;      \
 139              t ? (tmp = t->next, 1) : 0;\
 140              t = tmp)
 141 #endif /* TRACEPOINT_H */