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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [inferior.h] - Blame information for rev 294

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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;
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struct frame_info;
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struct ui_file;
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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".
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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
 
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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);
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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;
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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);
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100
extern void set_sigio_trap (void);
101
 
102
extern void clear_sigio_trap (void);
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/* Set/get file name for default use for standard in/out in the inferior.  */
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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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/* 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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/* 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.
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 */
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extern int inferior_ignoring_leading_exec_events;
132
 
133
/* Inferior environment. */
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135
extern struct gdb_environ *inferior_environ;
136
 
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extern void clear_proceed_status (void);
138
 
139
extern void proceed (CORE_ADDR, enum target_signal, int);
140
 
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/* When set, stop the 'step' command if we enter a function which has
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   no line number information.  The normal behavior is that we step
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   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 */
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211
extern void fork_inferior (char *, char *, char **,
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                           void (*)(void),
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                           void (*)(int), void (*)(void), char *);
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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,
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                                   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,
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    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
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   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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