Commit | Line | Data |
---|---|---|
c906108c SS |
1 | /* Variables that describe the inferior process running under GDB: |
2 | Where it is, why it stopped, and how to step it. | |
1bac305b AC |
3 | |
4 | Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, | |
5 | 1996, 1998, 1999, 2000, 2001, 2003 Free Software Foundation, Inc. | |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | #if !defined (INFERIOR_H) | |
25 | #define INFERIOR_H 1 | |
26 | ||
da3331ec AC |
27 | struct target_waitstatus; |
28 | struct frame_info; | |
29 | struct ui_file; | |
30 | struct type; | |
67a2b77e | 31 | struct gdbarch; |
72cec141 | 32 | struct regcache; |
67a2b77e | 33 | |
c906108c SS |
34 | /* For bpstat. */ |
35 | #include "breakpoint.h" | |
36 | ||
37 | /* For enum target_signal. */ | |
38 | #include "target.h" | |
39 | ||
aa0cd9c1 AC |
40 | /* For struct frame_id. */ |
41 | #include "frame.h" | |
42 | ||
7a292a7a | 43 | /* Structure in which to save the status of the inferior. Create/Save |
c906108c SS |
44 | through "save_inferior_status", restore through |
45 | "restore_inferior_status". | |
7a292a7a | 46 | |
c906108c SS |
47 | This pair of routines should be called around any transfer of |
48 | control to the inferior which you don't want showing up in your | |
49 | control variables. */ | |
50 | ||
7a292a7a | 51 | struct inferior_status; |
7a292a7a | 52 | |
a14ed312 | 53 | extern struct inferior_status *save_inferior_status (int); |
7a292a7a | 54 | |
a14ed312 | 55 | extern void restore_inferior_status (struct inferior_status *); |
7a292a7a | 56 | |
74b7792f AC |
57 | extern struct cleanup *make_cleanup_restore_inferior_status (struct inferior_status *); |
58 | ||
a14ed312 | 59 | extern void discard_inferior_status (struct inferior_status *); |
7a292a7a | 60 | |
a14ed312 KB |
61 | extern void write_inferior_status_register (struct inferior_status |
62 | *inf_status, int regno, | |
63 | LONGEST val); | |
c906108c | 64 | |
ca6724c1 KB |
65 | /* The -1 ptid, often used to indicate either an error condition |
66 | or a "don't care" condition, i.e, "run all threads." */ | |
67 | extern ptid_t minus_one_ptid; | |
68 | ||
69 | /* The null or zero ptid, often used to indicate no process. */ | |
70 | extern ptid_t null_ptid; | |
71 | ||
72 | /* Attempt to find and return an existing ptid with the given PID, LWP, | |
73 | and TID components. If none exists, create a new one and return | |
74 | that. */ | |
75 | ptid_t ptid_build (int pid, long lwp, long tid); | |
76 | ||
77 | /* Find/Create a ptid from just a pid. */ | |
78 | ptid_t pid_to_ptid (int pid); | |
79 | ||
80 | /* Fetch the pid (process id) component from a ptid. */ | |
81 | int ptid_get_pid (ptid_t ptid); | |
82 | ||
83 | /* Fetch the lwp (lightweight process) component from a ptid. */ | |
84 | long ptid_get_lwp (ptid_t ptid); | |
85 | ||
86 | /* Fetch the tid (thread id) component from a ptid. */ | |
87 | long ptid_get_tid (ptid_t ptid); | |
88 | ||
89 | /* Compare two ptids to see if they are equal */ | |
90 | extern int ptid_equal (ptid_t p1, ptid_t p2); | |
91 | ||
ce696e05 KB |
92 | /* Save value of inferior_ptid so that it may be restored by |
93 | a later call to do_cleanups(). Returns the struct cleanup | |
94 | pointer needed for later doing the cleanup. */ | |
95 | extern struct cleanup * save_inferior_ptid (void); | |
96 | ||
a14ed312 | 97 | extern void set_sigint_trap (void); |
c906108c | 98 | |
a14ed312 | 99 | extern void clear_sigint_trap (void); |
c906108c | 100 | |
a14ed312 | 101 | extern void set_sigio_trap (void); |
c906108c | 102 | |
a14ed312 | 103 | extern void clear_sigio_trap (void); |
c906108c SS |
104 | |
105 | /* File name for default use for standard in/out in the inferior. */ | |
106 | ||
107 | extern char *inferior_io_terminal; | |
108 | ||
39f77062 KB |
109 | /* Collected pid, tid, etc. of the debugged inferior. When there's |
110 | no inferior, PIDGET (inferior_ptid) will be 0. */ | |
c906108c | 111 | |
39f77062 | 112 | extern ptid_t inferior_ptid; |
c906108c | 113 | |
43ff13b4 JM |
114 | /* Is the inferior running right now, as a result of a 'run&', |
115 | 'continue&' etc command? This is used in asycn gdb to determine | |
116 | whether a command that the user enters while the target is running | |
117 | is allowed or not. */ | |
118 | extern int target_executing; | |
119 | ||
120 | /* Are we simulating synchronous execution? This is used in async gdb | |
121 | to implement the 'run', 'continue' etc commands, which will not | |
122 | redisplay the prompt until the execution is actually over. */ | |
123 | extern int sync_execution; | |
124 | ||
39f77062 | 125 | /* This is only valid when inferior_ptid is non-zero. |
c906108c SS |
126 | |
127 | If this is 0, then exec events should be noticed and responded to | |
128 | by the debugger (i.e., be reported to the user). | |
129 | ||
130 | If this is > 0, then that many subsequent exec events should be | |
131 | ignored (i.e., not be reported to the user). | |
c5aa993b | 132 | */ |
c906108c SS |
133 | extern int inferior_ignoring_startup_exec_events; |
134 | ||
135 | /* This is only valid when inferior_ignoring_startup_exec_events is | |
136 | zero. | |
137 | ||
138 | Some targets (stupidly) report more than one exec event per actual | |
139 | call to an event() system call. If only the last such exec event | |
140 | need actually be noticed and responded to by the debugger (i.e., | |
141 | be reported to the user), then this is the number of "leading" | |
142 | exec events which should be ignored. | |
c5aa993b | 143 | */ |
c906108c SS |
144 | extern int inferior_ignoring_leading_exec_events; |
145 | ||
146 | /* Inferior environment. */ | |
147 | ||
148 | extern struct environ *inferior_environ; | |
149 | ||
a14ed312 | 150 | extern void clear_proceed_status (void); |
c906108c | 151 | |
a14ed312 | 152 | extern void proceed (CORE_ADDR, enum target_signal, int); |
c906108c | 153 | |
5fbbeb29 CF |
154 | /* When set, stop the 'step' command if we enter a function which has |
155 | no line number information. The normal behavior is that we step | |
156 | over such function. */ | |
157 | extern int step_stop_if_no_debug; | |
158 | ||
a14ed312 | 159 | extern void kill_inferior (void); |
c906108c | 160 | |
a14ed312 | 161 | extern void generic_mourn_inferior (void); |
c906108c | 162 | |
a790ad35 SC |
163 | extern void terminal_save_ours (void); |
164 | ||
a14ed312 | 165 | extern void terminal_ours (void); |
c906108c | 166 | |
a14ed312 | 167 | extern CORE_ADDR read_pc (void); |
c906108c | 168 | |
39f77062 | 169 | extern CORE_ADDR read_pc_pid (ptid_t); |
c906108c | 170 | |
a14ed312 | 171 | extern void write_pc (CORE_ADDR); |
c906108c | 172 | |
39f77062 | 173 | extern void write_pc_pid (CORE_ADDR, ptid_t); |
c906108c | 174 | |
39f77062 | 175 | extern void generic_target_write_pc (CORE_ADDR, ptid_t); |
0f71a2f6 | 176 | |
a14ed312 | 177 | extern CORE_ADDR read_sp (void); |
c906108c | 178 | |
66140c26 | 179 | extern CORE_ADDR unsigned_pointer_to_address (struct type *type, const void *buf); |
4478b372 | 180 | |
ac2e2ef7 AC |
181 | extern void unsigned_address_to_pointer (struct type *type, void *buf, |
182 | CORE_ADDR addr); | |
66140c26 AC |
183 | extern CORE_ADDR signed_pointer_to_address (struct type *type, |
184 | const void *buf); | |
ac2e2ef7 AC |
185 | extern void address_to_signed_pointer (struct type *type, void *buf, |
186 | CORE_ADDR addr); | |
4478b372 | 187 | |
a14ed312 | 188 | extern void wait_for_inferior (void); |
c906108c | 189 | |
a14ed312 | 190 | extern void fetch_inferior_event (void *); |
43ff13b4 | 191 | |
a14ed312 | 192 | extern void init_wait_for_inferior (void); |
c906108c | 193 | |
a14ed312 | 194 | extern void close_exec_file (void); |
c906108c | 195 | |
a14ed312 | 196 | extern void reopen_exec_file (void); |
c906108c SS |
197 | |
198 | /* The `resume' routine should only be called in special circumstances. | |
199 | Normally, use `proceed', which handles a lot of bookkeeping. */ | |
200 | ||
a14ed312 | 201 | extern void resume (int, enum target_signal); |
c906108c SS |
202 | |
203 | /* From misc files */ | |
204 | ||
0ab7a791 AC |
205 | extern void default_print_registers_info (struct gdbarch *gdbarch, |
206 | struct ui_file *file, | |
207 | struct frame_info *frame, | |
208 | int regnum, int all); | |
666e11c5 | 209 | |
a14ed312 | 210 | extern void store_inferior_registers (int); |
c906108c | 211 | |
a14ed312 | 212 | extern void fetch_inferior_registers (int); |
c906108c | 213 | |
a14ed312 | 214 | extern void solib_create_inferior_hook (void); |
c906108c | 215 | |
a14ed312 | 216 | extern void child_terminal_info (char *, int); |
c906108c | 217 | |
a14ed312 | 218 | extern void term_info (char *, int); |
c906108c | 219 | |
a14ed312 | 220 | extern void terminal_ours_for_output (void); |
c906108c | 221 | |
a14ed312 | 222 | extern void terminal_inferior (void); |
c906108c | 223 | |
a14ed312 | 224 | extern void terminal_init_inferior (void); |
c906108c | 225 | |
a14ed312 | 226 | extern void terminal_init_inferior_with_pgrp (int pgrp); |
c906108c SS |
227 | |
228 | /* From infptrace.c or infttrace.c */ | |
229 | ||
a14ed312 | 230 | extern int attach (int); |
c906108c | 231 | |
a14ed312 | 232 | extern void detach (int); |
c906108c | 233 | |
7a292a7a | 234 | /* PTRACE method of waiting for inferior process. */ |
39f77062 | 235 | int ptrace_wait (ptid_t, int *); |
c906108c | 236 | |
39f77062 | 237 | extern void child_resume (ptid_t, int, enum target_signal); |
c906108c SS |
238 | |
239 | #ifndef PTRACE_ARG3_TYPE | |
f8707cac | 240 | #define PTRACE_ARG3_TYPE PTRACE_TYPE_ARG3 |
c906108c SS |
241 | #endif |
242 | ||
f8707cac | 243 | extern int call_ptrace (int, int, PTRACE_ARG3_TYPE, int); |
c906108c | 244 | |
a14ed312 | 245 | extern void pre_fork_inferior (void); |
c906108c SS |
246 | |
247 | /* From procfs.c */ | |
248 | ||
a14ed312 | 249 | extern int proc_iterate_over_mappings (int (*)(int, CORE_ADDR)); |
c906108c | 250 | |
39f77062 | 251 | extern ptid_t procfs_first_available (void); |
c906108c | 252 | |
c906108c SS |
253 | /* From fork-child.c */ |
254 | ||
a14ed312 KB |
255 | extern void fork_inferior (char *, char *, char **, |
256 | void (*)(void), | |
257 | void (*)(int), void (*)(void), char *); | |
c906108c SS |
258 | |
259 | ||
a14ed312 | 260 | extern void startup_inferior (int); |
c906108c | 261 | |
552c04a7 TT |
262 | extern char *construct_inferior_arguments (struct gdbarch *, int, char **); |
263 | ||
c906108c SS |
264 | /* From inflow.c */ |
265 | ||
a14ed312 | 266 | extern void new_tty_prefork (char *); |
c906108c | 267 | |
a14ed312 | 268 | extern int gdb_has_a_terminal (void); |
c906108c SS |
269 | |
270 | /* From infrun.c */ | |
271 | ||
a14ed312 | 272 | extern void start_remote (void); |
c906108c | 273 | |
a14ed312 | 274 | extern void normal_stop (void); |
c906108c | 275 | |
a14ed312 | 276 | extern int signal_stop_state (int); |
c906108c | 277 | |
a14ed312 | 278 | extern int signal_print_state (int); |
c906108c | 279 | |
a14ed312 | 280 | extern int signal_pass_state (int); |
c906108c | 281 | |
a14ed312 | 282 | extern int signal_stop_update (int, int); |
d4f3574e | 283 | |
a14ed312 | 284 | extern int signal_print_update (int, int); |
d4f3574e | 285 | |
a14ed312 | 286 | extern int signal_pass_update (int, int); |
d4f3574e | 287 | |
39f77062 KB |
288 | extern void get_last_target_status(ptid_t *ptid, |
289 | struct target_waitstatus *status); | |
e02bc4cc | 290 | |
6604731b DJ |
291 | extern void follow_inferior_reset_breakpoints (void); |
292 | ||
c906108c SS |
293 | /* From infcmd.c */ |
294 | ||
a14ed312 | 295 | extern void tty_command (char *, int); |
c906108c | 296 | |
a14ed312 | 297 | extern void attach_command (char *, int); |
c906108c | 298 | |
a250df2e | 299 | extern char *get_inferior_args (void); |
07091751 | 300 | |
a250df2e | 301 | extern char *set_inferior_args (char *); |
07091751 | 302 | |
552c04a7 TT |
303 | extern void set_inferior_args_vector (int, char **); |
304 | ||
36dc181b EZ |
305 | extern void registers_info (char *, int); |
306 | ||
307 | extern void nexti_command (char *, int); | |
308 | ||
309 | extern void stepi_command (char *, int); | |
310 | ||
311 | extern void continue_command (char *, int); | |
312 | ||
313 | extern void interrupt_target_command (char *args, int from_tty); | |
314 | ||
c906108c SS |
315 | /* Last signal that the inferior received (why it stopped). */ |
316 | ||
317 | extern enum target_signal stop_signal; | |
318 | ||
319 | /* Address at which inferior stopped. */ | |
320 | ||
321 | extern CORE_ADDR stop_pc; | |
322 | ||
323 | /* Chain containing status of breakpoint(s) that we have stopped at. */ | |
324 | ||
325 | extern bpstat stop_bpstat; | |
326 | ||
327 | /* Flag indicating that a command has proceeded the inferior past the | |
328 | current breakpoint. */ | |
329 | ||
330 | extern int breakpoint_proceeded; | |
331 | ||
332 | /* Nonzero if stopped due to a step command. */ | |
333 | ||
334 | extern int stop_step; | |
335 | ||
336 | /* Nonzero if stopped due to completion of a stack dummy routine. */ | |
337 | ||
338 | extern int stop_stack_dummy; | |
339 | ||
340 | /* Nonzero if program stopped due to a random (unexpected) signal in | |
341 | inferior process. */ | |
342 | ||
343 | extern int stopped_by_random_signal; | |
344 | ||
345 | /* Range to single step within. | |
346 | If this is nonzero, respond to a single-step signal | |
347 | by continuing to step if the pc is in this range. | |
348 | ||
349 | If step_range_start and step_range_end are both 1, it means to step for | |
350 | a single instruction (FIXME: it might clean up wait_for_inferior in a | |
351 | minor way if this were changed to the address of the instruction and | |
352 | that address plus one. But maybe not.). */ | |
353 | ||
354 | extern CORE_ADDR step_range_start; /* Inclusive */ | |
c5aa993b | 355 | extern CORE_ADDR step_range_end; /* Exclusive */ |
c906108c SS |
356 | |
357 | /* Stack frame address as of when stepping command was issued. | |
358 | This is how we know when we step into a subroutine call, | |
359 | and how to set the frame for the breakpoint used to step out. */ | |
360 | ||
aa0cd9c1 | 361 | extern struct frame_id step_frame_id; |
c906108c | 362 | |
c906108c SS |
363 | /* 1 means step over all subroutine calls. |
364 | -1 means step over calls to undebuggable functions. */ | |
365 | ||
5fbbeb29 CF |
366 | enum step_over_calls_kind |
367 | { | |
368 | STEP_OVER_NONE, | |
369 | STEP_OVER_ALL, | |
a4acd088 CF |
370 | STEP_OVER_UNDEBUGGABLE |
371 | }; | |
372 | ||
373 | extern enum step_over_calls_kind step_over_calls; | |
c906108c SS |
374 | |
375 | /* If stepping, nonzero means step count is > 1 | |
376 | so don't print frame next time inferior stops | |
377 | if it stops due to stepping. */ | |
378 | ||
379 | extern int step_multi; | |
380 | ||
c54cfec8 EZ |
381 | /* Nonzero means expecting a trap and caller will handle it |
382 | themselves. It is used when running in the shell before the child | |
383 | program has been exec'd; and when running some kinds of remote | |
384 | stuff (FIXME?). */ | |
385 | ||
386 | /* It is also used after attach, due to attaching to a process. This | |
387 | is a bit trickier. When doing an attach, the kernel stops the | |
388 | debuggee with a SIGSTOP. On newer GNU/Linux kernels (>= 2.5.61) | |
389 | the handling of SIGSTOP for a ptraced process has changed. Earlier | |
390 | versions of the kernel would ignore these SIGSTOPs, while now | |
391 | SIGSTOP is treated like any other signal, i.e. it is not muffled. | |
392 | ||
393 | If the gdb user does a 'continue' after the 'attach', gdb passes | |
394 | the global variable stop_signal (which stores the signal from the | |
395 | attach, SIGSTOP) to the ptrace(PTRACE_CONT,...) call. This is | |
396 | problematic, because the kernel doesn't ignore such SIGSTOP | |
397 | now. I.e. it is reported back to gdb, which in turn presents it | |
398 | back to the user. | |
399 | ||
400 | To avoid the problem, we use STOP_QUIETLY_NO_SIGSTOP, which allows | |
401 | gdb to clear the value of stop_signal after the attach, so that it | |
402 | is not passed back down to the kernel. */ | |
403 | ||
404 | enum stop_kind | |
405 | { | |
406 | NO_STOP_QUIETLY = 0, | |
407 | STOP_QUIETLY, | |
408 | STOP_QUIETLY_NO_SIGSTOP | |
409 | }; | |
c906108c | 410 | |
c0236d92 | 411 | extern enum stop_kind stop_soon; |
c906108c SS |
412 | |
413 | /* Nonzero if proceed is being used for a "finish" command or a similar | |
414 | situation when stop_registers should be saved. */ | |
415 | ||
416 | extern int proceed_to_finish; | |
417 | ||
418 | /* Save register contents here when about to pop a stack dummy frame, | |
419 | if-and-only-if proceed_to_finish is set. | |
420 | Thus this contains the return value from the called function (assuming | |
421 | values are returned in a register). */ | |
422 | ||
72cec141 | 423 | extern struct regcache *stop_registers; |
c906108c | 424 | |
39f77062 | 425 | /* Nonzero if the child process in inferior_ptid was attached rather |
c906108c SS |
426 | than forked. */ |
427 | ||
428 | extern int attach_flag; | |
429 | \f | |
c906108c SS |
430 | /* Possible values for CALL_DUMMY_LOCATION. */ |
431 | #define ON_STACK 1 | |
c906108c | 432 | #define AT_ENTRY_POINT 4 |
9710e734 | 433 | #define AT_SYMBOL 5 |
c906108c | 434 | |
c906108c SS |
435 | /* If STARTUP_WITH_SHELL is set, GDB's "run" |
436 | will attempts to start up the debugee under a shell. | |
437 | This is in order for argument-expansion to occur. E.g., | |
438 | (gdb) run * | |
439 | The "*" gets expanded by the shell into a list of files. | |
440 | While this is a nice feature, it turns out to interact badly | |
441 | with some of the catch-fork/catch-exec features we have added. | |
442 | In particular, if the shell does any fork/exec's before | |
443 | the exec of the target program, that can confuse GDB. | |
444 | To disable this feature, set STARTUP_WITH_SHELL to 0. | |
445 | To enable this feature, set STARTUP_WITH_SHELL to 1. | |
446 | The catch-exec traps expected during start-up will | |
447 | be 1 if target is not started up with a shell, 2 if it is. | |
448 | - RT | |
449 | If you disable this, you need to decrement | |
450 | START_INFERIOR_TRAPS_EXPECTED in tm.h. */ | |
451 | #define STARTUP_WITH_SHELL 1 | |
452 | #if !defined(START_INFERIOR_TRAPS_EXPECTED) | |
453 | #define START_INFERIOR_TRAPS_EXPECTED 2 | |
454 | #endif | |
455 | #endif /* !defined (INFERIOR_H) */ |