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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [gdb/] [inferior.h] - Blame information for rev 827

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1 24 jeremybenn
/* Variables that describe the inferior process running under GDB:
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   Where it is, why it stopped, and how to step it.
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   Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
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   1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007, 2008
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   Free Software Foundation, Inc.
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8
   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
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#if !defined (INFERIOR_H)
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#define INFERIOR_H 1
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26
struct target_waitstatus;
27
struct frame_info;
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struct ui_file;
29
struct type;
30
struct gdbarch;
31
struct regcache;
32
 
33
/* For bpstat.  */
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#include "breakpoint.h"
35
 
36
/* For enum target_signal.  */
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#include "target.h"
38
 
39
/* For struct frame_id.  */
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#include "frame.h"
41
 
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/* Structure in which to save the status of the inferior.  Create/Save
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   through "save_inferior_status", restore through
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   "restore_inferior_status".
45
 
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   This pair of routines should be called around any transfer of
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   control to the inferior which you don't want showing up in your
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   control variables.  */
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struct inferior_status;
51
 
52
extern struct inferior_status *save_inferior_status (int);
53
 
54
extern void restore_inferior_status (struct inferior_status *);
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56
extern struct cleanup *make_cleanup_restore_inferior_status (struct inferior_status *);
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extern void discard_inferior_status (struct inferior_status *);
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extern void write_inferior_status_register (struct inferior_status
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                                            *inf_status, int regno,
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                                            LONGEST val);
63
 
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/* The -1 ptid, often used to indicate either an error condition
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   or a "don't care" condition, i.e, "run all threads."  */
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extern ptid_t minus_one_ptid;
67
 
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/* The null or zero ptid, often used to indicate no process. */
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extern ptid_t null_ptid;
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/* Attempt to find and return an existing ptid with the given PID, LWP,
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   and TID components.  If none exists, create a new one and return
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   that.  */
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ptid_t ptid_build (int pid, long lwp, long tid);
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/* Find/Create a ptid from just a pid. */
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ptid_t pid_to_ptid (int pid);
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/* Fetch the pid (process id) component from a ptid. */
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int ptid_get_pid (ptid_t ptid);
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/* Fetch the lwp (lightweight process) component from a ptid. */
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long ptid_get_lwp (ptid_t ptid);
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/* Fetch the tid (thread id) component from a ptid. */
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long ptid_get_tid (ptid_t ptid);
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/* Compare two ptids to see if they are equal */
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extern int ptid_equal (ptid_t p1, ptid_t p2);
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/* Save value of inferior_ptid so that it may be restored by
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   a later call to do_cleanups().  Returns the struct cleanup
93
   pointer needed for later doing the cleanup.  */
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extern struct cleanup * save_inferior_ptid (void);
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96
extern void set_sigint_trap (void);
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98
extern void clear_sigint_trap (void);
99
 
100
extern void set_sigio_trap (void);
101
 
102
extern void clear_sigio_trap (void);
103
 
104
/* Set/get file name for default use for standard in/out in the inferior.  */
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106
extern void set_inferior_io_terminal (const char *terminal_name);
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extern const char *get_inferior_io_terminal (void);
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/* Collected pid, tid, etc. of the debugged inferior.  When there's
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   no inferior, PIDGET (inferior_ptid) will be 0. */
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extern ptid_t inferior_ptid;
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114
/* Is the inferior running right now, as a result of a 'run&',
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   'continue&' etc command? This is used in asycn gdb to determine
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   whether a command that the user enters while the target is running
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   is allowed or not. */
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extern int target_executing;
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120
/* Are we simulating synchronous execution? This is used in async gdb
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   to implement the 'run', 'continue' etc commands, which will not
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   redisplay the prompt until the execution is actually over. */
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extern int sync_execution;
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125
/* Some targets (stupidly) report more than one exec event per actual
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   call to an event() system call.  If only the last such exec event
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   need actually be noticed and responded to by the debugger (i.e.,
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   be reported to the user), then this is the number of "leading"
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   exec events which should be ignored.
130
 */
131
extern int inferior_ignoring_leading_exec_events;
132
 
133
/* Inferior environment. */
134
 
135
extern struct gdb_environ *inferior_environ;
136
 
137
extern void clear_proceed_status (void);
138
 
139
extern void proceed (CORE_ADDR, enum target_signal, int);
140
 
141
/* When set, stop the 'step' command if we enter a function which has
142
   no line number information.  The normal behavior is that we step
143
   over such function.  */
144
extern int step_stop_if_no_debug;
145
 
146
extern void generic_mourn_inferior (void);
147
 
148
extern void terminal_save_ours (void);
149
 
150
extern void terminal_ours (void);
151
 
152
extern CORE_ADDR read_pc (void);
153
 
154
extern CORE_ADDR read_pc_pid (ptid_t);
155
 
156
extern void write_pc (CORE_ADDR);
157
 
158
extern void write_pc_pid (CORE_ADDR, ptid_t);
159
 
160
extern CORE_ADDR unsigned_pointer_to_address (struct type *type,
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                                              const gdb_byte *buf);
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extern void unsigned_address_to_pointer (struct type *type, gdb_byte *buf,
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                                         CORE_ADDR addr);
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extern CORE_ADDR signed_pointer_to_address (struct type *type,
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                                            const gdb_byte *buf);
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extern void address_to_signed_pointer (struct type *type, gdb_byte *buf,
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                                       CORE_ADDR addr);
168
 
169
extern void wait_for_inferior (int treat_exec_as_sigtrap);
170
 
171
extern void fetch_inferior_event (void *);
172
 
173
extern void init_wait_for_inferior (void);
174
 
175
extern void close_exec_file (void);
176
 
177
extern void reopen_exec_file (void);
178
 
179
/* The `resume' routine should only be called in special circumstances.
180
   Normally, use `proceed', which handles a lot of bookkeeping.  */
181
 
182
extern void resume (int, enum target_signal);
183
 
184
/* From misc files */
185
 
186
extern void default_print_registers_info (struct gdbarch *gdbarch,
187
                                          struct ui_file *file,
188
                                          struct frame_info *frame,
189
                                          int regnum, int all);
190
 
191
extern void child_terminal_info (char *, int);
192
 
193
extern void term_info (char *, int);
194
 
195
extern void terminal_ours_for_output (void);
196
 
197
extern void terminal_inferior (void);
198
 
199
extern void terminal_init_inferior (void);
200
 
201
extern void terminal_init_inferior_with_pgrp (int pgrp);
202
 
203
/* From procfs.c */
204
 
205
extern int proc_iterate_over_mappings (int (*)(int, CORE_ADDR));
206
 
207
extern ptid_t procfs_first_available (void);
208
 
209
/* From fork-child.c */
210
 
211
extern void fork_inferior (char *, char *, char **,
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                           void (*)(void),
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                           void (*)(int), void (*)(void), char *);
214
 
215
 
216
extern void startup_inferior (int);
217
 
218
extern char *construct_inferior_arguments (struct gdbarch *, int, char **);
219
 
220
/* From inflow.c */
221
 
222
extern void new_tty_prefork (const char *);
223
 
224
extern int gdb_has_a_terminal (void);
225
 
226
/* From infrun.c */
227
 
228
extern void start_remote (int from_tty);
229
 
230
extern void normal_stop (void);
231
 
232
extern int signal_stop_state (int);
233
 
234
extern int signal_print_state (int);
235
 
236
extern int signal_pass_state (int);
237
 
238
extern int signal_stop_update (int, int);
239
 
240
extern int signal_print_update (int, int);
241
 
242
extern int signal_pass_update (int, int);
243
 
244
extern void get_last_target_status(ptid_t *ptid,
245
                                   struct target_waitstatus *status);
246
 
247
extern void follow_inferior_reset_breakpoints (void);
248
 
249
/* From infcmd.c */
250
 
251
extern void tty_command (char *, int);
252
 
253
extern void post_create_inferior (struct target_ops *, int);
254
 
255
extern void attach_command (char *, int);
256
 
257
extern char *get_inferior_args (void);
258
 
259
extern char *set_inferior_args (char *);
260
 
261
extern void set_inferior_args_vector (int, char **);
262
 
263
extern void registers_info (char *, int);
264
 
265
extern void nexti_command (char *, int);
266
 
267
extern void stepi_command (char *, int);
268
 
269
extern void continue_command (char *, int);
270
 
271
extern void interrupt_target_command (char *args, int from_tty);
272
 
273
/* Last signal that the inferior received (why it stopped).  */
274
 
275
extern enum target_signal stop_signal;
276
 
277
/* Address at which inferior stopped.  */
278
 
279
extern CORE_ADDR stop_pc;
280
 
281
/* Chain containing status of breakpoint(s) that we have stopped at.  */
282
 
283
extern bpstat stop_bpstat;
284
 
285
/* Flag indicating that a command has proceeded the inferior past the
286
   current breakpoint.  */
287
 
288
extern int breakpoint_proceeded;
289
 
290
/* Nonzero if stopped due to a step command.  */
291
 
292
extern int stop_step;
293
 
294
/* Nonzero if stopped due to completion of a stack dummy routine.  */
295
 
296
extern int stop_stack_dummy;
297
 
298
/* Nonzero if program stopped due to a random (unexpected) signal in
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   inferior process.  */
300
 
301
extern int stopped_by_random_signal;
302
 
303
/* Range to single step within.
304
   If this is nonzero, respond to a single-step signal
305
   by continuing to step if the pc is in this range.
306
 
307
   If step_range_start and step_range_end are both 1, it means to step for
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   a single instruction (FIXME: it might clean up wait_for_inferior in a
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   minor way if this were changed to the address of the instruction and
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   that address plus one.  But maybe not.).  */
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312
extern CORE_ADDR step_range_start;      /* Inclusive */
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extern CORE_ADDR step_range_end;        /* Exclusive */
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315
/* Stack frame address as of when stepping command was issued.
316
   This is how we know when we step into a subroutine call,
317
   and how to set the frame for the breakpoint used to step out.  */
318
 
319
extern struct frame_id step_frame_id;
320
 
321
/* 1 means step over all subroutine calls.
322
   -1 means step over calls to undebuggable functions.  */
323
 
324
enum step_over_calls_kind
325
  {
326
    STEP_OVER_NONE,
327
    STEP_OVER_ALL,
328
    STEP_OVER_UNDEBUGGABLE
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  };
330
 
331
extern enum step_over_calls_kind step_over_calls;
332
 
333
/* If stepping, nonzero means step count is > 1
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   so don't print frame next time inferior stops
335
   if it stops due to stepping.  */
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337
extern int step_multi;
338
 
339
/* Anything but NO_STOP_QUIETLY means we expect a trap and the caller
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   will handle it themselves.  STOP_QUIETLY is used when running in
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   the shell before the child program has been exec'd and when running
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   through shared library loading.  STOP_QUIETLY_REMOTE is used when
343
   setting up a remote connection; it is like STOP_QUIETLY_NO_SIGSTOP
344
   except that there is no need to hide a signal.  */
345
 
346
/* It is also used after attach, due to attaching to a process. This
347
   is a bit trickier.  When doing an attach, the kernel stops the
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   debuggee with a SIGSTOP.  On newer GNU/Linux kernels (>= 2.5.61)
349
   the handling of SIGSTOP for a ptraced process has changed. Earlier
350
   versions of the kernel would ignore these SIGSTOPs, while now
351
   SIGSTOP is treated like any other signal, i.e. it is not muffled.
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353
   If the gdb user does a 'continue' after the 'attach', gdb passes
354
   the global variable stop_signal (which stores the signal from the
355
   attach, SIGSTOP) to the ptrace(PTRACE_CONT,...)  call.  This is
356
   problematic, because the kernel doesn't ignore such SIGSTOP
357
   now. I.e. it is reported back to gdb, which in turn presents it
358
   back to the user.
359
 
360
   To avoid the problem, we use STOP_QUIETLY_NO_SIGSTOP, which allows
361
   gdb to clear the value of stop_signal after the attach, so that it
362
   is not passed back down to the kernel.  */
363
 
364
enum stop_kind
365
  {
366
    NO_STOP_QUIETLY = 0,
367
    STOP_QUIETLY,
368
    STOP_QUIETLY_REMOTE,
369
    STOP_QUIETLY_NO_SIGSTOP
370
  };
371
 
372
extern enum stop_kind stop_soon;
373
 
374
/* Nonzero if proceed is being used for a "finish" command or a similar
375
   situation when stop_registers should be saved.  */
376
 
377
extern int proceed_to_finish;
378
 
379
/* Save register contents here when about to pop a stack dummy frame,
380
   if-and-only-if proceed_to_finish is set.
381
   Thus this contains the return value from the called function (assuming
382
   values are returned in a register).  */
383
 
384
extern struct regcache *stop_registers;
385
 
386
/* Nonzero if the child process in inferior_ptid was attached rather
387
   than forked.  */
388
 
389
extern int attach_flag;
390
 
391
/* Possible values for gdbarch_call_dummy_location.  */
392
#define ON_STACK 1
393
#define AT_ENTRY_POINT 4
394
#define AT_SYMBOL 5
395
 
396
/* If STARTUP_WITH_SHELL is set, GDB's "run"
397
   will attempts to start up the debugee under a shell.
398
   This is in order for argument-expansion to occur. E.g.,
399
   (gdb) run *
400
   The "*" gets expanded by the shell into a list of files.
401
   While this is a nice feature, it turns out to interact badly
402
   with some of the catch-fork/catch-exec features we have added.
403
   In particular, if the shell does any fork/exec's before
404
   the exec of the target program, that can confuse GDB.
405
   To disable this feature, set STARTUP_WITH_SHELL to 0.
406
   To enable this feature, set STARTUP_WITH_SHELL to 1.
407
   The catch-exec traps expected during start-up will
408
   be 1 if target is not started up with a shell, 2 if it is.
409
   - RT
410
   If you disable this, you need to decrement
411
   START_INFERIOR_TRAPS_EXPECTED in tm.h. */
412
#define STARTUP_WITH_SHELL 1
413
#if !defined(START_INFERIOR_TRAPS_EXPECTED)
414
#define START_INFERIOR_TRAPS_EXPECTED   2
415
#endif
416
#endif /* !defined (INFERIOR_H) */

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