gdb/infrun.h

   1 /* Copyright (C) 1986-2015 Free Software Foundation, Inc.
   2
   3    This file is part of GDB.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #ifndef INFRUN_H
  19 #define INFRUN_H 1
  20
  21 #include "symtab.h"
  22
  23 struct target_waitstatus;
  24 struct frame_info;
  25 struct address_space;
  26
  27 /* True if we are debugging run control.  */
  28 extern unsigned int debug_infrun;
  29
  30 /* True if we are debugging displaced stepping.  */
  31 extern int debug_displaced;
  32
  33 /* Nonzero if we want to give control to the user when we're notified
  34    of shared library events by the dynamic linker.  */
  35 extern int stop_on_solib_events;
  36
  37 /* Are we simulating synchronous execution? This is used in async gdb
  38    to implement the 'run', 'continue' etc commands, which will not
  39    redisplay the prompt until the execution is actually over.  */
  40 extern int sync_execution;
  41
  42 /* True if execution commands resume all threads of all processes by
  43    default; otherwise, resume only threads of the current inferior
  44    process.  */
  45 extern int sched_multi;
  46
  47 /* When set, stop the 'step' command if we enter a function which has
  48    no line number information.  The normal behavior is that we step
  49    over such function.  */
  50 extern int step_stop_if_no_debug;
  51
  52 /* If set, the inferior should be controlled in non-stop mode.  In
  53    this mode, each thread is controlled independently.  Execution
  54    commands apply only to the selected thread by default, and stop
  55    events stop only the thread that had the event -- the other threads
  56    are kept running freely.  */
  57 extern int non_stop;
  58
  59 /* When set (default), the target should attempt to disable the
  60    operating system's address space randomization feature when
  61    starting an inferior.  */
  62 extern int disable_randomization;
  63
  64 /* Reverse execution.  */
  65 enum exec_direction_kind
  66   {
  67     EXEC_FORWARD,
  68     EXEC_REVERSE
  69   };
  70
  71 /* The current execution direction.  This should only be set to enum
  72    exec_direction_kind values.  It is only an int to make it
  73    compatible with make_cleanup_restore_integer.  */
  74 extern int execution_direction;
  75
  76 extern void start_remote (int from_tty);
  77
  78 /* Clear out all variables saying what to do when inferior is
  79    continued or stepped.  First do this, then set the ones you want,
  80    then call `proceed'.  STEP indicates whether we're preparing for a
  81    step/stepi command.  */
  82 extern void clear_proceed_status (int step);
  83
  84 extern void proceed (CORE_ADDR, enum gdb_signal);
  85
  86 /* The `resume' routine should only be called in special circumstances.
  87    Normally, use `proceed', which handles a lot of bookkeeping.  */
  88 extern void resume (enum gdb_signal);
  89
  90 /* Return a ptid representing the set of threads that we will proceed,
  91    in the perspective of the user/frontend.  We may actually resume
  92    fewer threads at first, e.g., if a thread is stopped at a
  93    breakpoint that needs stepping-off, but that should not be visible
  94    to the user/frontend, and neither should the frontend/user be
  95    allowed to proceed any of the threads that happen to be stopped for
  96    internal run control handling, if a previous command wanted them
  97    resumed.  */
  98 extern ptid_t user_visible_resume_ptid (int step);
  99
 100 extern void wait_for_inferior (void);
 101
 102 extern void normal_stop (void);
 103
 104 extern void get_last_target_status (ptid_t *ptid,
 105                                     struct target_waitstatus *status);
 106
 107 extern void prepare_for_detach (void);
 108
 109 extern void fetch_inferior_event (void *);
 110
 111 extern void init_wait_for_inferior (void);
 112
 113 extern void insert_step_resume_breakpoint_at_sal (struct gdbarch *,
 114                                                   struct symtab_and_line ,
 115                                                   struct frame_id);
 116
 117 /* Returns true if we're trying to step past the instruction at
 118    ADDRESS in ASPACE.  */
 119 extern int stepping_past_instruction_at (struct address_space *aspace,
 120                                          CORE_ADDR address);
 121
 122 /* Returns true if we're trying to step past an instruction that
 123    triggers a non-steppable watchpoint.  */
 124 extern int stepping_past_nonsteppable_watchpoint (void);
 125
 126 extern void set_step_info (struct frame_info *frame,
 127                            struct symtab_and_line sal);
 128
 129 /* Several print_*_reason helper functions to print why the inferior
 130    has stopped to the passed in UIOUT.  */
 131
 132 /* Signal received, print why the inferior has stopped.  */
 133 extern void print_signal_received_reason (struct ui_out *uiout,
 134                                           enum gdb_signal siggnal);
 135
 136 /* Print why the inferior has stopped.  We are done with a
 137    step/next/si/ni command, print why the inferior has stopped.  */
 138 extern void print_end_stepping_range_reason (struct ui_out *uiout);
 139
 140 /* The inferior was terminated by a signal, print why it stopped.  */
 141 extern void print_signal_exited_reason (struct ui_out *uiout,
 142                                         enum gdb_signal siggnal);
 143
 144 /* The inferior program is finished, print why it stopped.  */
 145 extern void print_exited_reason (struct ui_out *uiout, int exitstatus);
 146
 147 /* Reverse execution: target ran out of history info, print why the
 148    inferior has stopped.  */
 149 extern void print_no_history_reason (struct ui_out *uiout);
 150
 151 extern void print_stop_event (struct target_waitstatus *ws);
 152
 153 extern int signal_stop_state (int);
 154
 155 extern int signal_print_state (int);
 156
 157 extern int signal_pass_state (int);
 158
 159 extern int signal_stop_update (int, int);
 160
 161 extern int signal_print_update (int, int);
 162
 163 extern int signal_pass_update (int, int);
 164
 165 extern void update_signals_program_target (void);
 166
 167 /* Clear the convenience variables associated with the exit of the
 168    inferior.  Currently, those variables are $_exitcode and
 169    $_exitsignal.  */
 170 extern void clear_exit_convenience_vars (void);
 171
 172 /* Dump LEN bytes at BUF in hex to FILE, followed by a newline.  */
 173 extern void displaced_step_dump_bytes (struct ui_file *file,
 174                                        const gdb_byte *buf, size_t len);
 175
 176 extern struct displaced_step_closure *get_displaced_step_closure_by_addr
 177     (CORE_ADDR addr);
 178
 179 extern void update_observer_mode (void);
 180
 181 extern void signal_catch_update (const unsigned int *);
 182
 183 /* In some circumstances we allow a command to specify a numeric
 184    signal.  The idea is to keep these circumstances limited so that
 185    users (and scripts) develop portable habits.  For comparison,
 186    POSIX.2 `kill' requires that 1,2,3,6,9,14, and 15 work (and using a
 187    numeric signal at all is obsolescent.  We are slightly more lenient
 188    and allow 1-15 which should match host signal numbers on most
 189    systems.  Use of symbolic signal names is strongly encouraged.  */
 190 enum gdb_signal gdb_signal_from_command (int num);
 191
 192 #endif /* INFRUN_H */