Commit | Line | Data |
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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, | |
1bf1958d MM |
5 | 1996, 1998, 1999, 2000, 2001, 2003, 2004, 2005 |
6 | Free Software Foundation, Inc. | |
c906108c | 7 | |
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
c906108c | 14 | |
c5aa993b JM |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
c906108c | 19 | |
c5aa993b JM |
20 | You should have received a copy of the GNU General Public License |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
24 | |
25 | #if !defined (INFERIOR_H) | |
26 | #define INFERIOR_H 1 | |
27 | ||
da3331ec AC |
28 | struct target_waitstatus; |
29 | struct frame_info; | |
30 | struct ui_file; | |
31 | struct type; | |
67a2b77e | 32 | struct gdbarch; |
72cec141 | 33 | struct regcache; |
67a2b77e | 34 | |
c906108c SS |
35 | /* For bpstat. */ |
36 | #include "breakpoint.h" | |
37 | ||
38 | /* For enum target_signal. */ | |
39 | #include "target.h" | |
40 | ||
aa0cd9c1 AC |
41 | /* For struct frame_id. */ |
42 | #include "frame.h" | |
43 | ||
7a292a7a | 44 | /* Structure in which to save the status of the inferior. Create/Save |
c906108c SS |
45 | through "save_inferior_status", restore through |
46 | "restore_inferior_status". | |
7a292a7a | 47 | |
c906108c SS |
48 | This pair of routines should be called around any transfer of |
49 | control to the inferior which you don't want showing up in your | |
50 | control variables. */ | |
51 | ||
7a292a7a | 52 | struct inferior_status; |
7a292a7a | 53 | |
a14ed312 | 54 | extern struct inferior_status *save_inferior_status (int); |
7a292a7a | 55 | |
a14ed312 | 56 | extern void restore_inferior_status (struct inferior_status *); |
7a292a7a | 57 | |
74b7792f AC |
58 | extern struct cleanup *make_cleanup_restore_inferior_status (struct inferior_status *); |
59 | ||
a14ed312 | 60 | extern void discard_inferior_status (struct inferior_status *); |
7a292a7a | 61 | |
a14ed312 KB |
62 | extern void write_inferior_status_register (struct inferior_status |
63 | *inf_status, int regno, | |
64 | LONGEST val); | |
c906108c | 65 | |
ca6724c1 KB |
66 | /* The -1 ptid, often used to indicate either an error condition |
67 | or a "don't care" condition, i.e, "run all threads." */ | |
68 | extern ptid_t minus_one_ptid; | |
69 | ||
70 | /* The null or zero ptid, often used to indicate no process. */ | |
71 | extern ptid_t null_ptid; | |
72 | ||
73 | /* Attempt to find and return an existing ptid with the given PID, LWP, | |
74 | and TID components. If none exists, create a new one and return | |
75 | that. */ | |
76 | ptid_t ptid_build (int pid, long lwp, long tid); | |
77 | ||
78 | /* Find/Create a ptid from just a pid. */ | |
79 | ptid_t pid_to_ptid (int pid); | |
80 | ||
81 | /* Fetch the pid (process id) component from a ptid. */ | |
82 | int ptid_get_pid (ptid_t ptid); | |
83 | ||
84 | /* Fetch the lwp (lightweight process) component from a ptid. */ | |
85 | long ptid_get_lwp (ptid_t ptid); | |
86 | ||
87 | /* Fetch the tid (thread id) component from a ptid. */ | |
88 | long ptid_get_tid (ptid_t ptid); | |
89 | ||
90 | /* Compare two ptids to see if they are equal */ | |
91 | extern int ptid_equal (ptid_t p1, ptid_t p2); | |
92 | ||
ce696e05 KB |
93 | /* Save value of inferior_ptid so that it may be restored by |
94 | a later call to do_cleanups(). Returns the struct cleanup | |
95 | pointer needed for later doing the cleanup. */ | |
96 | extern struct cleanup * save_inferior_ptid (void); | |
97 | ||
a14ed312 | 98 | extern void set_sigint_trap (void); |
c906108c | 99 | |
a14ed312 | 100 | extern void clear_sigint_trap (void); |
c906108c | 101 | |
a14ed312 | 102 | extern void set_sigio_trap (void); |
c906108c | 103 | |
a14ed312 | 104 | extern void clear_sigio_trap (void); |
c906108c SS |
105 | |
106 | /* File name for default use for standard in/out in the inferior. */ | |
107 | ||
108 | extern char *inferior_io_terminal; | |
109 | ||
39f77062 KB |
110 | /* Collected pid, tid, etc. of the debugged inferior. When there's |
111 | no inferior, PIDGET (inferior_ptid) will be 0. */ | |
c906108c | 112 | |
39f77062 | 113 | extern ptid_t inferior_ptid; |
c906108c | 114 | |
43ff13b4 JM |
115 | /* Is the inferior running right now, as a result of a 'run&', |
116 | 'continue&' etc command? This is used in asycn gdb to determine | |
117 | whether a command that the user enters while the target is running | |
118 | is allowed or not. */ | |
119 | extern int target_executing; | |
120 | ||
121 | /* Are we simulating synchronous execution? This is used in async gdb | |
122 | to implement the 'run', 'continue' etc commands, which will not | |
123 | redisplay the prompt until the execution is actually over. */ | |
124 | extern int sync_execution; | |
125 | ||
39f77062 | 126 | /* This is only valid when inferior_ptid is non-zero. |
c906108c SS |
127 | |
128 | If this is 0, then exec events should be noticed and responded to | |
129 | by the debugger (i.e., be reported to the user). | |
130 | ||
131 | If this is > 0, then that many subsequent exec events should be | |
132 | ignored (i.e., not be reported to the user). | |
c5aa993b | 133 | */ |
c906108c SS |
134 | extern int inferior_ignoring_startup_exec_events; |
135 | ||
136 | /* This is only valid when inferior_ignoring_startup_exec_events is | |
137 | zero. | |
138 | ||
139 | Some targets (stupidly) report more than one exec event per actual | |
140 | call to an event() system call. If only the last such exec event | |
141 | need actually be noticed and responded to by the debugger (i.e., | |
142 | be reported to the user), then this is the number of "leading" | |
143 | exec events which should be ignored. | |
c5aa993b | 144 | */ |
c906108c SS |
145 | extern int inferior_ignoring_leading_exec_events; |
146 | ||
147 | /* Inferior environment. */ | |
148 | ||
1bf1958d | 149 | extern struct gdb_environ *inferior_environ; |
c906108c | 150 | |
a14ed312 | 151 | extern void clear_proceed_status (void); |
c906108c | 152 | |
a14ed312 | 153 | extern void proceed (CORE_ADDR, enum target_signal, int); |
c906108c | 154 | |
5fbbeb29 CF |
155 | /* When set, stop the 'step' command if we enter a function which has |
156 | no line number information. The normal behavior is that we step | |
157 | over such function. */ | |
158 | extern int step_stop_if_no_debug; | |
159 | ||
a14ed312 | 160 | extern void kill_inferior (void); |
c906108c | 161 | |
a14ed312 | 162 | extern void generic_mourn_inferior (void); |
c906108c | 163 | |
a790ad35 SC |
164 | extern void terminal_save_ours (void); |
165 | ||
a14ed312 | 166 | extern void terminal_ours (void); |
c906108c | 167 | |
a14ed312 | 168 | extern CORE_ADDR read_pc (void); |
c906108c | 169 | |
39f77062 | 170 | extern CORE_ADDR read_pc_pid (ptid_t); |
c906108c | 171 | |
a14ed312 | 172 | extern void write_pc (CORE_ADDR); |
c906108c | 173 | |
39f77062 | 174 | extern void write_pc_pid (CORE_ADDR, ptid_t); |
c906108c | 175 | |
39f77062 | 176 | extern void generic_target_write_pc (CORE_ADDR, ptid_t); |
0f71a2f6 | 177 | |
a14ed312 | 178 | extern CORE_ADDR read_sp (void); |
c906108c | 179 | |
66140c26 | 180 | extern CORE_ADDR unsigned_pointer_to_address (struct type *type, const void *buf); |
4478b372 | 181 | |
ac2e2ef7 AC |
182 | extern void unsigned_address_to_pointer (struct type *type, void *buf, |
183 | CORE_ADDR addr); | |
66140c26 AC |
184 | extern CORE_ADDR signed_pointer_to_address (struct type *type, |
185 | const void *buf); | |
ac2e2ef7 AC |
186 | extern void address_to_signed_pointer (struct type *type, void *buf, |
187 | CORE_ADDR addr); | |
4478b372 | 188 | |
a14ed312 | 189 | extern void wait_for_inferior (void); |
c906108c | 190 | |
a14ed312 | 191 | extern void fetch_inferior_event (void *); |
43ff13b4 | 192 | |
a14ed312 | 193 | extern void init_wait_for_inferior (void); |
c906108c | 194 | |
a14ed312 | 195 | extern void close_exec_file (void); |
c906108c | 196 | |
a14ed312 | 197 | extern void reopen_exec_file (void); |
c906108c SS |
198 | |
199 | /* The `resume' routine should only be called in special circumstances. | |
200 | Normally, use `proceed', which handles a lot of bookkeeping. */ | |
201 | ||
a14ed312 | 202 | extern void resume (int, enum target_signal); |
c906108c SS |
203 | |
204 | /* From misc files */ | |
205 | ||
0ab7a791 AC |
206 | extern void default_print_registers_info (struct gdbarch *gdbarch, |
207 | struct ui_file *file, | |
208 | struct frame_info *frame, | |
209 | int regnum, int all); | |
666e11c5 | 210 | |
a14ed312 | 211 | extern void store_inferior_registers (int); |
c906108c | 212 | |
a14ed312 | 213 | extern void fetch_inferior_registers (int); |
c906108c | 214 | |
a14ed312 | 215 | extern void solib_create_inferior_hook (void); |
c906108c | 216 | |
a14ed312 | 217 | extern void child_terminal_info (char *, int); |
c906108c | 218 | |
a14ed312 | 219 | extern void term_info (char *, int); |
c906108c | 220 | |
a14ed312 | 221 | extern void terminal_ours_for_output (void); |
c906108c | 222 | |
a14ed312 | 223 | extern void terminal_inferior (void); |
c906108c | 224 | |
a14ed312 | 225 | extern void terminal_init_inferior (void); |
c906108c | 226 | |
a14ed312 | 227 | extern void terminal_init_inferior_with_pgrp (int pgrp); |
c906108c SS |
228 | |
229 | /* From infptrace.c or infttrace.c */ | |
230 | ||
a14ed312 | 231 | extern int attach (int); |
c906108c | 232 | |
a14ed312 | 233 | extern void detach (int); |
c906108c | 234 | |
7a292a7a | 235 | /* PTRACE method of waiting for inferior process. */ |
39f77062 | 236 | int ptrace_wait (ptid_t, int *); |
c906108c | 237 | |
39f77062 | 238 | extern void child_resume (ptid_t, int, enum target_signal); |
c906108c SS |
239 | |
240 | #ifndef PTRACE_ARG3_TYPE | |
f8707cac | 241 | #define PTRACE_ARG3_TYPE PTRACE_TYPE_ARG3 |
c906108c SS |
242 | #endif |
243 | ||
f8707cac | 244 | extern int call_ptrace (int, int, PTRACE_ARG3_TYPE, int); |
c906108c | 245 | |
a14ed312 | 246 | extern void pre_fork_inferior (void); |
c906108c SS |
247 | |
248 | /* From procfs.c */ | |
249 | ||
a14ed312 | 250 | extern int proc_iterate_over_mappings (int (*)(int, CORE_ADDR)); |
c906108c | 251 | |
39f77062 | 252 | extern ptid_t procfs_first_available (void); |
c906108c | 253 | |
c906108c SS |
254 | /* From fork-child.c */ |
255 | ||
a14ed312 KB |
256 | extern void fork_inferior (char *, char *, char **, |
257 | void (*)(void), | |
258 | void (*)(int), void (*)(void), char *); | |
c906108c SS |
259 | |
260 | ||
a14ed312 | 261 | extern void startup_inferior (int); |
c906108c | 262 | |
552c04a7 TT |
263 | extern char *construct_inferior_arguments (struct gdbarch *, int, char **); |
264 | ||
c906108c SS |
265 | /* From inflow.c */ |
266 | ||
a14ed312 | 267 | extern void new_tty_prefork (char *); |
c906108c | 268 | |
a14ed312 | 269 | extern int gdb_has_a_terminal (void); |
c906108c SS |
270 | |
271 | /* From infrun.c */ | |
272 | ||
a14ed312 | 273 | extern void start_remote (void); |
c906108c | 274 | |
a14ed312 | 275 | extern void normal_stop (void); |
c906108c | 276 | |
a14ed312 | 277 | extern int signal_stop_state (int); |
c906108c | 278 | |
a14ed312 | 279 | extern int signal_print_state (int); |
c906108c | 280 | |
a14ed312 | 281 | extern int signal_pass_state (int); |
c906108c | 282 | |
a14ed312 | 283 | extern int signal_stop_update (int, int); |
d4f3574e | 284 | |
a14ed312 | 285 | extern int signal_print_update (int, int); |
d4f3574e | 286 | |
a14ed312 | 287 | extern int signal_pass_update (int, int); |
d4f3574e | 288 | |
39f77062 KB |
289 | extern void get_last_target_status(ptid_t *ptid, |
290 | struct target_waitstatus *status); | |
e02bc4cc | 291 | |
6604731b DJ |
292 | extern void follow_inferior_reset_breakpoints (void); |
293 | ||
c906108c SS |
294 | /* From infcmd.c */ |
295 | ||
a14ed312 | 296 | extern void tty_command (char *, int); |
c906108c | 297 | |
a14ed312 | 298 | extern void attach_command (char *, int); |
c906108c | 299 | |
a250df2e | 300 | extern char *get_inferior_args (void); |
07091751 | 301 | |
a250df2e | 302 | extern char *set_inferior_args (char *); |
07091751 | 303 | |
552c04a7 TT |
304 | extern void set_inferior_args_vector (int, char **); |
305 | ||
36dc181b EZ |
306 | extern void registers_info (char *, int); |
307 | ||
308 | extern void nexti_command (char *, int); | |
309 | ||
310 | extern void stepi_command (char *, int); | |
311 | ||
312 | extern void continue_command (char *, int); | |
313 | ||
314 | extern void interrupt_target_command (char *args, int from_tty); | |
315 | ||
c906108c SS |
316 | /* Last signal that the inferior received (why it stopped). */ |
317 | ||
318 | extern enum target_signal stop_signal; | |
319 | ||
320 | /* Address at which inferior stopped. */ | |
321 | ||
322 | extern CORE_ADDR stop_pc; | |
323 | ||
324 | /* Chain containing status of breakpoint(s) that we have stopped at. */ | |
325 | ||
326 | extern bpstat stop_bpstat; | |
327 | ||
328 | /* Flag indicating that a command has proceeded the inferior past the | |
329 | current breakpoint. */ | |
330 | ||
331 | extern int breakpoint_proceeded; | |
332 | ||
333 | /* Nonzero if stopped due to a step command. */ | |
334 | ||
335 | extern int stop_step; | |
336 | ||
337 | /* Nonzero if stopped due to completion of a stack dummy routine. */ | |
338 | ||
339 | extern int stop_stack_dummy; | |
340 | ||
341 | /* Nonzero if program stopped due to a random (unexpected) signal in | |
342 | inferior process. */ | |
343 | ||
344 | extern int stopped_by_random_signal; | |
345 | ||
346 | /* Range to single step within. | |
347 | If this is nonzero, respond to a single-step signal | |
348 | by continuing to step if the pc is in this range. | |
349 | ||
350 | If step_range_start and step_range_end are both 1, it means to step for | |
351 | a single instruction (FIXME: it might clean up wait_for_inferior in a | |
352 | minor way if this were changed to the address of the instruction and | |
353 | that address plus one. But maybe not.). */ | |
354 | ||
355 | extern CORE_ADDR step_range_start; /* Inclusive */ | |
c5aa993b | 356 | extern CORE_ADDR step_range_end; /* Exclusive */ |
c906108c SS |
357 | |
358 | /* Stack frame address as of when stepping command was issued. | |
359 | This is how we know when we step into a subroutine call, | |
360 | and how to set the frame for the breakpoint used to step out. */ | |
361 | ||
aa0cd9c1 | 362 | extern struct frame_id step_frame_id; |
c906108c | 363 | |
c906108c SS |
364 | /* 1 means step over all subroutine calls. |
365 | -1 means step over calls to undebuggable functions. */ | |
366 | ||
5fbbeb29 CF |
367 | enum step_over_calls_kind |
368 | { | |
369 | STEP_OVER_NONE, | |
370 | STEP_OVER_ALL, | |
a4acd088 CF |
371 | STEP_OVER_UNDEBUGGABLE |
372 | }; | |
373 | ||
374 | extern enum step_over_calls_kind step_over_calls; | |
c906108c SS |
375 | |
376 | /* If stepping, nonzero means step count is > 1 | |
377 | so don't print frame next time inferior stops | |
378 | if it stops due to stepping. */ | |
379 | ||
380 | extern int step_multi; | |
381 | ||
c54cfec8 EZ |
382 | /* Nonzero means expecting a trap and caller will handle it |
383 | themselves. It is used when running in the shell before the child | |
384 | program has been exec'd; and when running some kinds of remote | |
385 | stuff (FIXME?). */ | |
386 | ||
387 | /* It is also used after attach, due to attaching to a process. This | |
388 | is a bit trickier. When doing an attach, the kernel stops the | |
389 | debuggee with a SIGSTOP. On newer GNU/Linux kernels (>= 2.5.61) | |
390 | the handling of SIGSTOP for a ptraced process has changed. Earlier | |
391 | versions of the kernel would ignore these SIGSTOPs, while now | |
392 | SIGSTOP is treated like any other signal, i.e. it is not muffled. | |
393 | ||
394 | If the gdb user does a 'continue' after the 'attach', gdb passes | |
395 | the global variable stop_signal (which stores the signal from the | |
396 | attach, SIGSTOP) to the ptrace(PTRACE_CONT,...) call. This is | |
397 | problematic, because the kernel doesn't ignore such SIGSTOP | |
398 | now. I.e. it is reported back to gdb, which in turn presents it | |
399 | back to the user. | |
400 | ||
401 | To avoid the problem, we use STOP_QUIETLY_NO_SIGSTOP, which allows | |
402 | gdb to clear the value of stop_signal after the attach, so that it | |
403 | is not passed back down to the kernel. */ | |
404 | ||
405 | enum stop_kind | |
406 | { | |
407 | NO_STOP_QUIETLY = 0, | |
408 | STOP_QUIETLY, | |
409 | STOP_QUIETLY_NO_SIGSTOP | |
410 | }; | |
c906108c | 411 | |
c0236d92 | 412 | extern enum stop_kind stop_soon; |
c906108c SS |
413 | |
414 | /* Nonzero if proceed is being used for a "finish" command or a similar | |
415 | situation when stop_registers should be saved. */ | |
416 | ||
417 | extern int proceed_to_finish; | |
418 | ||
419 | /* Save register contents here when about to pop a stack dummy frame, | |
420 | if-and-only-if proceed_to_finish is set. | |
421 | Thus this contains the return value from the called function (assuming | |
422 | values are returned in a register). */ | |
423 | ||
72cec141 | 424 | extern struct regcache *stop_registers; |
c906108c | 425 | |
39f77062 | 426 | /* Nonzero if the child process in inferior_ptid was attached rather |
c906108c SS |
427 | than forked. */ |
428 | ||
429 | extern int attach_flag; | |
430 | \f | |
c906108c SS |
431 | /* Possible values for CALL_DUMMY_LOCATION. */ |
432 | #define ON_STACK 1 | |
c906108c | 433 | #define AT_ENTRY_POINT 4 |
9710e734 | 434 | #define AT_SYMBOL 5 |
c906108c | 435 | |
c906108c SS |
436 | /* If STARTUP_WITH_SHELL is set, GDB's "run" |
437 | will attempts to start up the debugee under a shell. | |
438 | This is in order for argument-expansion to occur. E.g., | |
439 | (gdb) run * | |
440 | The "*" gets expanded by the shell into a list of files. | |
441 | While this is a nice feature, it turns out to interact badly | |
442 | with some of the catch-fork/catch-exec features we have added. | |
443 | In particular, if the shell does any fork/exec's before | |
444 | the exec of the target program, that can confuse GDB. | |
445 | To disable this feature, set STARTUP_WITH_SHELL to 0. | |
446 | To enable this feature, set STARTUP_WITH_SHELL to 1. | |
447 | The catch-exec traps expected during start-up will | |
448 | be 1 if target is not started up with a shell, 2 if it is. | |
449 | - RT | |
450 | If you disable this, you need to decrement | |
451 | START_INFERIOR_TRAPS_EXPECTED in tm.h. */ | |
452 | #define STARTUP_WITH_SHELL 1 | |
453 | #if !defined(START_INFERIOR_TRAPS_EXPECTED) | |
454 | #define START_INFERIOR_TRAPS_EXPECTED 2 | |
455 | #endif | |
456 | #endif /* !defined (INFERIOR_H) */ |