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/* Data structures associated with tracepoints in GDB.

   Copyright (C) 1997, 1998, 1999, 2000, 2007, 2008

   Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#if !defined (TRACEPOINT_H)

#define TRACEPOINT_H 1

/* The data structure for an action: */

struct action_line

  {

    struct action_line *next;

    char *action;

  };

/* The data structure for a tracepoint: */

struct tracepoint

  {

    struct tracepoint *next;

    int enabled_p;

#if 0

    /* Type of tracepoint.  (MVS FIXME: needed?) */

    enum tptype type;

    /* What to do with this tracepoint after we hit it

       MVS FIXME: needed?).  */

    enum tpdisp disposition;

#endif

    /* Number assigned to distinguish tracepoints.  */

    int number;

    /* Address to trace at, or NULL if not an instruction tracepoint.

       (MVS ?) */

    CORE_ADDR address;

    /* Line number of this address.

       Only matters if address is non-NULL.  */

    int line_number;

    /* Source file name of this address.

       Only matters if address is non-NULL.  */

    char *source_file;

    /* Number of times this tracepoint should single-step

       and collect additional data.  */

    long step_count;

    /* Number of times this tracepoint should be hit before

       disabling/ending.  */

    int pass_count;

    /* Chain of action lines to execute when this tracepoint is hit.  */

    struct action_line *actions;

    /* Conditional (MVS ?).  */

    struct expression *cond;

    /* String we used to set the tracepoint (malloc'd).

       Only matters if address is non-NULL.  */

    char *addr_string;

    /* Language we used to set the tracepoint.  */

    enum language language;

    /* Input radix we used to set the tracepoint.  */

    int input_radix;

    /* Count of the number of times this tracepoint was taken, dumped

       with the info, but not used for anything else.  Useful for

       seeing how many times you hit a tracepoint prior to the program

       aborting, so you can back up to just before the abort.  */

    int hit_count;

    /* Thread number for thread-specific tracepoint,

       or -1 if don't care.  */

    int thread;

    /* BFD section, in case of overlays: no, I don't know if

       tracepoints are really gonna work with overlays.  */

    asection *section;

  };

enum actionline_type

  {

    BADLINE = -1,

    GENERIC = 0,

    END = 1,

    STEPPING = 2

  };

/* The tracepoint chain of all tracepoints.  */

extern struct tracepoint *tracepoint_chain;

extern unsigned long trace_running_p;

/* A hook used to notify the UI of tracepoint operations.  */

void (*deprecated_create_tracepoint_hook) (struct tracepoint *);

void (*deprecated_delete_tracepoint_hook) (struct tracepoint *);

void (*deprecated_modify_tracepoint_hook) (struct tracepoint *);

void (*deprecated_trace_find_hook) (char *arg, int from_tty);

void (*deprecated_trace_start_stop_hook) (int start, int from_tty);

struct tracepoint *get_tracepoint_by_number (char **, int, int);

int get_traceframe_number (void);

void free_actions (struct tracepoint *);

enum actionline_type validate_actionline (char **, struct tracepoint *);

/* Walk the following statement or block through all tracepoints.

   ALL_TRACEPOINTS_SAFE does so even if the statment deletes the

   current breakpoint.  */

#define ALL_TRACEPOINTS(t)  for (t = tracepoint_chain; t; t = t->next)

#define ALL_TRACEPOINTS_SAFE(t,tmp)     \

        for (t = tracepoint_chain;      \

             t ? (tmp = t->next, 1) : 0;\

             t = tmp)

#endif  /* TRACEPOINT_H */