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 */ 193