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 /* Save register contents here when executing a "finish" command or
  77    are about to pop a stack dummy frame, if-and-only-if
  78    proceed_to_finish is set.  Thus this contains the return value from
  79    the called function (assuming values are returned in a
  80    register).  */
  81 extern struct regcache *stop_registers;
  82
  83 extern void start_remote (int from_tty);
  84
  85 /* Clear out all variables saying what to do when inferior is
  86    continued or stepped.  First do this, then set the ones you want,
  87    then call `proceed'.  STEP indicates whether we're preparing for a
  88    step/stepi command.  */
  89 extern void clear_proceed_status (int step);
  90
  91 extern void proceed (CORE_ADDR, enum gdb_signal);
  92
  93 /* The `resume' routine should only be called in special circumstances.
  94    Normally, use `proceed', which handles a lot of bookkeeping.  */
  95 extern void resume (enum gdb_signal);
  96
  97 /* Return a ptid representing the set of threads that we will proceed,
  98    in the perspective of the user/frontend.  We may actually resume
  99    fewer threads at first, e.g., if a thread is stopped at a
 100    breakpoint that needs stepping-off, but that should not be visible
 101    to the user/frontend, and neither should the frontend/user be
 102    allowed to proceed any of the threads that happen to be stopped for
 103    internal run control handling, if a previous command wanted them
 104    resumed.  */
 105 extern ptid_t user_visible_resume_ptid (int step);
 106
 107 extern void wait_for_inferior (void);
 108
 109 extern void normal_stop (void);
 110
 111 extern void get_last_target_status (ptid_t *ptid,
 112                                     struct target_waitstatus *status);
 113
 114 extern void prepare_for_detach (void);
 115
 116 extern void fetch_inferior_event (void *);
 117
 118 extern void init_wait_for_inferior (void);
 119
 120 extern void insert_step_resume_breakpoint_at_sal (struct gdbarch *,
 121                                                   struct symtab_and_line ,
 122                                                   struct frame_id);
 123
 124 /* Returns true if we're trying to step past the instruction at
 125    ADDRESS in ASPACE.  */
 126 extern int stepping_past_instruction_at (struct address_space *aspace,
 127                                          CORE_ADDR address);
 128
 129 /* Returns true if we're trying to step past an instruction that
 130    triggers a non-steppable watchpoint.  */
 131 extern int stepping_past_nonsteppable_watchpoint (void);
 132
 133 extern void set_step_info (struct frame_info *frame,
 134                            struct symtab_and_line sal);
 135
 136 /* Several print_*_reason helper functions to print why the inferior
 137    has stopped to the passed in UIOUT.  */
 138
 139 /* Signal received, print why the inferior has stopped.  */
 140 extern void print_signal_received_reason (struct ui_out *uiout,
 141                                           enum gdb_signal siggnal);
 142
 143 /* Print why the inferior has stopped.  We are done with a
 144    step/next/si/ni command, print why the inferior has stopped.  */
 145 extern void print_end_stepping_range_reason (struct ui_out *uiout);
 146
 147 /* The inferior was terminated by a signal, print why it stopped.  */
 148 extern void print_signal_exited_reason (struct ui_out *uiout,
 149                                         enum gdb_signal siggnal);
 150
 151 /* The inferior program is finished, print why it stopped.  */
 152 extern void print_exited_reason (struct ui_out *uiout, int exitstatus);
 153
 154 /* Reverse execution: target ran out of history info, print why the
 155    inferior has stopped.  */
 156 extern void print_no_history_reason (struct ui_out *uiout);
 157
 158 extern void print_stop_event (struct target_waitstatus *ws);
 159
 160 extern int signal_stop_state (int);
 161
 162 extern int signal_print_state (int);
 163
 164 extern int signal_pass_state (int);
 165
 166 extern int signal_stop_update (int, int);
 167
 168 extern int signal_print_update (int, int);
 169
 170 extern int signal_pass_update (int, int);
 171
 172 extern void update_signals_program_target (void);
 173
 174 /* Clear the convenience variables associated with the exit of the
 175    inferior.  Currently, those variables are $_exitcode and
 176    $_exitsignal.  */
 177 extern void clear_exit_convenience_vars (void);
 178
 179 /* Dump LEN bytes at BUF in hex to FILE, followed by a newline.  */
 180 extern void displaced_step_dump_bytes (struct ui_file *file,
 181                                        const gdb_byte *buf, size_t len);
 182
 183 extern struct displaced_step_closure *get_displaced_step_closure_by_addr
 184     (CORE_ADDR addr);
 185
 186 extern void update_observer_mode (void);
 187
 188 extern void signal_catch_update (const unsigned int *);
 189
 190 /* In some circumstances we allow a command to specify a numeric
 191    signal.  The idea is to keep these circumstances limited so that
 192    users (and scripts) develop portable habits.  For comparison,
 193    POSIX.2 `kill' requires that 1,2,3,6,9,14, and 15 work (and using a
 194    numeric signal at all is obsolescent.  We are slightly more lenient
 195    and allow 1-15 which should match host signal numbers on most
 196    systems.  Use of symbolic signal names is strongly encouraged.  */
 197 enum gdb_signal gdb_signal_from_command (int num);
 198
 199 #endif /* INFRUN_H */