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, int); 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 (int, 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. */ 99 extern ptid_t user_visible_resume_ptid (int step); 100 101 extern void wait_for_inferior (void); 102 103 extern void normal_stop (void); 104 105 extern void get_last_target_status (ptid_t *ptid, 106 struct target_waitstatus *status); 107 108 extern void prepare_for_detach (void); 109 110 extern void fetch_inferior_event (void *); 111 112 extern void init_wait_for_inferior (void); 113 114 extern void insert_step_resume_breakpoint_at_sal (struct gdbarch *, 115 struct symtab_and_line , 116 struct frame_id); 117 118 /* Returns true if we're trying to step past the instruction at 119 ADDRESS in ASPACE. */ 120 extern int stepping_past_instruction_at (struct address_space *aspace, 121 CORE_ADDR address); 122 123 /* Returns true if we're trying to step past an instruction that 124 triggers a non-steppable watchpoint. */ 125 extern int stepping_past_nonsteppable_watchpoint (void); 126 127 extern void set_step_info (struct frame_info *frame, 128 struct symtab_and_line sal); 129 130 /* Several print_*_reason helper functions to print why the inferior 131 has stopped to the passed in UIOUT. */ 132 133 /* Signal received, print why the inferior has stopped. */ 134 extern void print_signal_received_reason (struct ui_out *uiout, 135 enum gdb_signal siggnal); 136 137 /* Print why the inferior has stopped. We are done with a 138 step/next/si/ni command, print why the inferior has stopped. */ 139 extern void print_end_stepping_range_reason (struct ui_out *uiout); 140 141 /* The inferior was terminated by a signal, print why it stopped. */ 142 extern void print_signal_exited_reason (struct ui_out *uiout, 143 enum gdb_signal siggnal); 144 145 /* The inferior program is finished, print why it stopped. */ 146 extern void print_exited_reason (struct ui_out *uiout, int exitstatus); 147 148 /* Reverse execution: target ran out of history info, print why the 149 inferior has stopped. */ 150 extern void print_no_history_reason (struct ui_out *uiout); 151 152 extern void print_stop_event (struct target_waitstatus *ws); 153 154 extern int signal_stop_state (int); 155 156 extern int signal_print_state (int); 157 158 extern int signal_pass_state (int); 159 160 extern int signal_stop_update (int, int); 161 162 extern int signal_print_update (int, int); 163 164 extern int signal_pass_update (int, int); 165 166 extern void update_signals_program_target (void); 167 168 /* Clear the convenience variables associated with the exit of the 169 inferior. Currently, those variables are $_exitcode and 170 $_exitsignal. */ 171 extern void clear_exit_convenience_vars (void); 172 173 /* Dump LEN bytes at BUF in hex to FILE, followed by a newline. */ 174 extern void displaced_step_dump_bytes (struct ui_file *file, 175 const gdb_byte *buf, size_t len); 176 177 extern struct displaced_step_closure *get_displaced_step_closure_by_addr 178 (CORE_ADDR addr); 179 180 extern void update_observer_mode (void); 181 182 extern void signal_catch_update (const unsigned int *); 183 184 /* In some circumstances we allow a command to specify a numeric 185 signal. The idea is to keep these circumstances limited so that 186 users (and scripts) develop portable habits. For comparison, 187 POSIX.2 `kill' requires that 1,2,3,6,9,14, and 15 work (and using a 188 numeric signal at all is obsolescent. We are slightly more lenient 189 and allow 1-15 which should match host signal numbers on most 190 systems. Use of symbolic signal names is strongly encouraged. */ 191 enum gdb_signal gdb_signal_from_command (int num); 192 193 #endif /* INFRUN_H */ 194