summaryrefslogtreecommitdiff
path: root/gdb/mi/mi-interp.c
blob: 5c37bc7f6da57f0122c51f74fb4e51cc3c9a329e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
/* MI Interpreter Definitions and Commands for GDB, the GNU debugger.

   Copyright (C) 2002-2005, 2007-2012 Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include "defs.h"
#include "gdb_string.h"
#include "interps.h"
#include "event-top.h"
#include "event-loop.h"
#include "inferior.h"
#include "ui-out.h"
#include "top.h"
#include "exceptions.h"
#include "mi-main.h"
#include "mi-cmds.h"
#include "mi-out.h"
#include "mi-console.h"
#include "mi-common.h"
#include "observer.h"
#include "gdbthread.h"
#include "solist.h"
#include "gdb.h"

/* These are the interpreter setup, etc. functions for the MI
   interpreter.  */

static void mi_execute_command_wrapper (char *cmd);
static void mi_execute_command_input_handler (char *cmd);
static void mi_command_loop (int mi_version);

/* These are hooks that we put in place while doing interpreter_exec
   so we can report interesting things that happened "behind the MI's
   back" in this command.  */

static int mi_interp_query_hook (const char *ctlstr, va_list ap)
  ATTRIBUTE_PRINTF (1, 0);

static void mi3_command_loop (void);
static void mi2_command_loop (void);
static void mi1_command_loop (void);

static void mi_insert_notify_hooks (void);
static void mi_remove_notify_hooks (void);
static void mi_on_normal_stop (struct bpstats *bs, int print_frame);

static void mi_new_thread (struct thread_info *t);
static void mi_thread_exit (struct thread_info *t, int silent);
static void mi_inferior_added (struct inferior *inf);
static void mi_inferior_appeared (struct inferior *inf);
static void mi_inferior_exit (struct inferior *inf);
static void mi_inferior_removed (struct inferior *inf);
static void mi_on_resume (ptid_t ptid);
static void mi_solib_loaded (struct so_list *solib);
static void mi_solib_unloaded (struct so_list *solib);
static void mi_about_to_proceed (void);
static void mi_traceframe_changed (int tfnum, int tpnum);
static void mi_tsv_created (const char *name, LONGEST value);
static void mi_tsv_deleted (const char *name);
static void mi_breakpoint_created (struct breakpoint *b);
static void mi_breakpoint_deleted (struct breakpoint *b);
static void mi_breakpoint_modified (struct breakpoint *b);
static void mi_command_param_changed (const char *param, const char *value);

static int report_initial_inferior (struct inferior *inf, void *closure);

static void *
mi_interpreter_init (struct interp *interp, int top_level)
{
  struct mi_interp *mi = XMALLOC (struct mi_interp);
  const char *name;
  int mi_version;

  /* Assign the output channel created at startup to its own global,
     so that we can create a console channel that encapsulates and
     prefixes all gdb_output-type bits coming from the rest of the
     debugger.  */

  raw_stdout = gdb_stdout;

  /* Create MI console channels, each with a different prefix so they
     can be distinguished.  */
  mi->out = mi_console_file_new (raw_stdout, "~", '"');
  mi->err = mi_console_file_new (raw_stdout, "&", '"');
  mi->log = mi->err;
  mi->targ = mi_console_file_new (raw_stdout, "@", '"');
  mi->event_channel = mi_console_file_new (raw_stdout, "=", 0);

  name = interp_name (interp);
  /* INTERP_MI selects the most recent released version.  "mi2" was
     released as part of GDB 6.0.  */
  if (strcmp (name, INTERP_MI) == 0)
    mi_version = 2;
  else if (strcmp (name, INTERP_MI1) == 0)
    mi_version = 1;
  else if (strcmp (name, INTERP_MI2) == 0)
    mi_version = 2;
  else if (strcmp (name, INTERP_MI3) == 0)
    mi_version = 3;
  else
    gdb_assert_not_reached ("unhandled MI version");

  mi->uiout = mi_out_new (mi_version);

  if (top_level)
    {
      observer_attach_new_thread (mi_new_thread);
      observer_attach_thread_exit (mi_thread_exit);
      observer_attach_inferior_added (mi_inferior_added);
      observer_attach_inferior_appeared (mi_inferior_appeared);
      observer_attach_inferior_exit (mi_inferior_exit);
      observer_attach_inferior_removed (mi_inferior_removed);
      observer_attach_normal_stop (mi_on_normal_stop);
      observer_attach_target_resumed (mi_on_resume);
      observer_attach_solib_loaded (mi_solib_loaded);
      observer_attach_solib_unloaded (mi_solib_unloaded);
      observer_attach_about_to_proceed (mi_about_to_proceed);
      observer_attach_traceframe_changed (mi_traceframe_changed);
      observer_attach_tsv_created (mi_tsv_created);
      observer_attach_tsv_deleted (mi_tsv_deleted);
      observer_attach_breakpoint_created (mi_breakpoint_created);
      observer_attach_breakpoint_deleted (mi_breakpoint_deleted);
      observer_attach_breakpoint_modified (mi_breakpoint_modified);
      observer_attach_command_param_changed (mi_command_param_changed);

      /* The initial inferior is created before this function is
	 called, so we need to report it explicitly.  Use iteration in
	 case future version of GDB creates more than one inferior
	 up-front.  */
      iterate_over_inferiors (report_initial_inferior, mi);
    }

  return mi;
}

static int
mi_interpreter_resume (void *data)
{
  struct mi_interp *mi = data;

  /* As per hack note in mi_interpreter_init, swap in the output
     channels... */
  gdb_setup_readline ();

  /* These overwrite some of the initialization done in
     _intialize_event_loop.  */
  call_readline = gdb_readline2;
  input_handler = mi_execute_command_input_handler;
  add_file_handler (input_fd, stdin_event_handler, 0);
  async_command_editing_p = 0;
  /* FIXME: This is a total hack for now.  PB's use of the MI
     implicitly relies on a bug in the async support which allows
     asynchronous commands to leak through the commmand loop.  The bug
     involves (but is not limited to) the fact that sync_execution was
     erroneously initialized to 0.  Duplicate by initializing it thus
     here...  */
  sync_execution = 0;

  gdb_stdout = mi->out;
  /* Route error and log output through the MI.  */
  gdb_stderr = mi->err;
  gdb_stdlog = mi->log;
  /* Route target output through the MI.  */
  gdb_stdtarg = mi->targ;
  /* Route target error through the MI as well.  */
  gdb_stdtargerr = mi->targ;

  /* Replace all the hooks that we know about.  There really needs to
     be a better way of doing this... */
  clear_interpreter_hooks ();

  deprecated_show_load_progress = mi_load_progress;

  /* If we're _the_ interpreter, take control.  */
  if (current_interp_named_p (INTERP_MI1))
    deprecated_command_loop_hook = mi1_command_loop;
  else if (current_interp_named_p (INTERP_MI2))
    deprecated_command_loop_hook = mi2_command_loop;
  else if (current_interp_named_p (INTERP_MI3))
    deprecated_command_loop_hook = mi3_command_loop;
  else
    deprecated_command_loop_hook = mi2_command_loop;

  return 1;
}

static int
mi_interpreter_suspend (void *data)
{
  gdb_disable_readline ();
  return 1;
}

static struct gdb_exception
mi_interpreter_exec (void *data, const char *command)
{
  char *tmp = alloca (strlen (command) + 1);

  strcpy (tmp, command);
  mi_execute_command_wrapper (tmp);
  return exception_none;
}

/* Never display the default GDB prompt in MI case.  */

static int
mi_interpreter_prompt_p (void *data)
{
  return 0;
}

void
mi_cmd_interpreter_exec (char *command, char **argv, int argc)
{
  struct interp *interp_to_use;
  int i;
  char *mi_error_message = NULL;
  struct cleanup *old_chain;

  if (argc < 2)
    error (_("-interpreter-exec: "
	     "Usage: -interpreter-exec interp command"));

  interp_to_use = interp_lookup (argv[0]);
  if (interp_to_use == NULL)
    error (_("-interpreter-exec: could not find interpreter \"%s\""),
	   argv[0]);

  if (!interp_exec_p (interp_to_use))
    error (_("-interpreter-exec: interpreter \"%s\" "
	     "does not support command execution"),
	      argv[0]);

  /* Insert the MI out hooks, making sure to also call the
     interpreter's hooks if it has any.  */
  /* KRS: We shouldn't need this... Events should be installed and
     they should just ALWAYS fire something out down the MI
     channel.  */
  mi_insert_notify_hooks ();

  /* Now run the code.  */

  old_chain = make_cleanup (null_cleanup, 0);
  for (i = 1; i < argc; i++)
    {
      struct gdb_exception e = interp_exec (interp_to_use, argv[i]);

      if (e.reason < 0)
	{
	  mi_error_message = xstrdup (e.message);
	  make_cleanup (xfree, mi_error_message);
	  break;
	}
    }

  mi_remove_notify_hooks ();

  if (mi_error_message != NULL)
    error ("%s", mi_error_message);
  do_cleanups (old_chain);
}

/* This inserts a number of hooks that are meant to produce
   async-notify ("=") MI messages while running commands in another
   interpreter using mi_interpreter_exec.  The canonical use for this
   is to allow access to the gdb CLI interpreter from within the MI,
   while still producing MI style output when actions in the CLI
   command change GDB's state.  */

static void
mi_insert_notify_hooks (void)
{
  deprecated_query_hook = mi_interp_query_hook;
}

static void
mi_remove_notify_hooks (void)
{
  deprecated_query_hook = NULL;
}

static int
mi_interp_query_hook (const char *ctlstr, va_list ap)
{
  return 1;
}

static void
mi_execute_command_wrapper (char *cmd)
{
  mi_execute_command (cmd, stdin == instream);
}

/* mi_execute_command_wrapper wrapper suitable for INPUT_HANDLER.  */

static void
mi_execute_command_input_handler (char *cmd)
{
  mi_execute_command_wrapper (cmd);

  fputs_unfiltered ("(gdb) \n", raw_stdout);
  gdb_flush (raw_stdout);
}

static void
mi1_command_loop (void)
{
  mi_command_loop (1);
}

static void
mi2_command_loop (void)
{
  mi_command_loop (2);
}

static void
mi3_command_loop (void)
{
  mi_command_loop (3);
}

static void
mi_command_loop (int mi_version)
{
  /* Turn off 8 bit strings in quoted output.  Any character with the
     high bit set is printed using C's octal format.  */
  sevenbit_strings = 1;

  /* Tell the world that we're alive.  */
  fputs_unfiltered ("(gdb) \n", raw_stdout);
  gdb_flush (raw_stdout);

  start_event_loop ();
}

static void
mi_new_thread (struct thread_info *t)
{
  struct mi_interp *mi = top_level_interpreter_data ();
  struct inferior *inf = find_inferior_pid (ptid_get_pid (t->ptid));

  gdb_assert (inf);

  fprintf_unfiltered (mi->event_channel, 
		      "thread-created,id=\"%d\",group-id=\"i%d\"",
		      t->num, inf->num);
  gdb_flush (mi->event_channel);
}

static void
mi_thread_exit (struct thread_info *t, int silent)
{
  struct mi_interp *mi;
  struct inferior *inf;

  if (silent)
    return;

  inf = find_inferior_pid (ptid_get_pid (t->ptid));

  mi = top_level_interpreter_data ();
  target_terminal_ours ();
  fprintf_unfiltered (mi->event_channel, 
		      "thread-exited,id=\"%d\",group-id=\"i%d\"",
		      t->num, inf->num);
  gdb_flush (mi->event_channel);
}

static void
mi_inferior_added (struct inferior *inf)
{
  struct mi_interp *mi = top_level_interpreter_data ();

  target_terminal_ours ();
  fprintf_unfiltered (mi->event_channel,
		      "thread-group-added,id=\"i%d\"",
		      inf->num);
  gdb_flush (mi->event_channel);
}

static void
mi_inferior_appeared (struct inferior *inf)
{
  struct mi_interp *mi = top_level_interpreter_data ();

  target_terminal_ours ();
  fprintf_unfiltered (mi->event_channel,
		      "thread-group-started,id=\"i%d\",pid=\"%d\"",
		      inf->num, inf->pid);
  gdb_flush (mi->event_channel);
}

static void
mi_inferior_exit (struct inferior *inf)
{
  struct mi_interp *mi = top_level_interpreter_data ();

  target_terminal_ours ();
  if (inf->has_exit_code)
    fprintf_unfiltered (mi->event_channel,
			"thread-group-exited,id=\"i%d\",exit-code=\"%s\"",
			inf->num, int_string (inf->exit_code, 8, 0, 0, 1));
  else
    fprintf_unfiltered (mi->event_channel,
			"thread-group-exited,id=\"i%d\"", inf->num);

  gdb_flush (mi->event_channel);  
}

static void
mi_inferior_removed (struct inferior *inf)
{
  struct mi_interp *mi = top_level_interpreter_data ();

  target_terminal_ours ();
  fprintf_unfiltered (mi->event_channel,
		      "thread-group-removed,id=\"i%d\"",
		      inf->num);
  gdb_flush (mi->event_channel);
}

static void
mi_on_normal_stop (struct bpstats *bs, int print_frame)
{
  /* Since this can be called when CLI command is executing,
     using cli interpreter, be sure to use MI uiout for output,
     not the current one.  */
  struct ui_out *mi_uiout = interp_ui_out (top_level_interpreter ());

  if (print_frame)
    {
      int core;

      if (current_uiout != mi_uiout)
	{
	  /* The normal_stop function has printed frame information
	     into CLI uiout, or some other non-MI uiout.  There's no
	     way we can extract proper fields from random uiout
	     object, so we print the frame again.  In practice, this
	     can only happen when running a CLI command in MI.  */
	  struct ui_out *saved_uiout = current_uiout;
	  struct target_waitstatus last;
	  ptid_t last_ptid;

	  current_uiout = mi_uiout;

	  get_last_target_status (&last_ptid, &last);
	  bpstat_print (bs, last.kind);

	  print_stack_frame (get_selected_frame (NULL), 0, SRC_AND_LOC);
	  current_uiout = saved_uiout;
	}

      ui_out_field_int (mi_uiout, "thread-id",
			pid_to_thread_id (inferior_ptid));
      if (non_stop)
	{
	  struct cleanup *back_to = make_cleanup_ui_out_list_begin_end 
	    (mi_uiout, "stopped-threads");

	  ui_out_field_int (mi_uiout, NULL,
			    pid_to_thread_id (inferior_ptid));
	  do_cleanups (back_to);
	}
      else
	ui_out_field_string (mi_uiout, "stopped-threads", "all");

      core = target_core_of_thread (inferior_ptid);
      if (core != -1)
	ui_out_field_int (mi_uiout, "core", core);
    }
  
  fputs_unfiltered ("*stopped", raw_stdout);
  mi_out_put (mi_uiout, raw_stdout);
  mi_out_rewind (mi_uiout);
  mi_print_timing_maybe ();
  fputs_unfiltered ("\n", raw_stdout);
  gdb_flush (raw_stdout);
}

static void
mi_about_to_proceed (void)
{
  /* Suppress output while calling an inferior function.  */

  if (!ptid_equal (inferior_ptid, null_ptid))
    {
      struct thread_info *tp = inferior_thread ();

      if (tp->control.in_infcall)
	return;
    }

  mi_proceeded = 1;
}

/* When the element is non-zero, no MI notifications will be emitted in
   response to the corresponding observers.  */

struct mi_suppress_notification mi_suppress_notification =
  {
    0,
    0,
    0,
  };

/* Emit notification on changing a traceframe.  */

static void
mi_traceframe_changed (int tfnum, int tpnum)
{
  struct mi_interp *mi = top_level_interpreter_data ();

  if (mi_suppress_notification.traceframe)
    return;

  target_terminal_ours ();

  if (tfnum >= 0)
    fprintf_unfiltered (mi->event_channel, "traceframe-changed,"
			"num=\"%d\",tracepoint=\"%d\"\n",
			tfnum, tpnum);
  else
    fprintf_unfiltered (mi->event_channel, "traceframe-changed,end");

  gdb_flush (mi->event_channel);
}

/* Emit notification on creating a trace state variable.  */

static void
mi_tsv_created (const char *name, LONGEST value)
{
  struct mi_interp *mi = top_level_interpreter_data ();

  target_terminal_ours ();

  fprintf_unfiltered (mi->event_channel, "tsv-created,"
		      "name=\"%s\",value=\"%s\"\n",
		      name, plongest (value));

  gdb_flush (mi->event_channel);
}

/* Emit notification on deleting a trace state variable.  */

static void
mi_tsv_deleted (const char *name)
{
  struct mi_interp *mi = top_level_interpreter_data ();

  target_terminal_ours ();

  if (name != NULL)
    fprintf_unfiltered (mi->event_channel, "tsv-deleted,"
			"name=\"%s\"\n", name);
  else
    fprintf_unfiltered (mi->event_channel, "tsv-deleted\n");

  gdb_flush (mi->event_channel);
}

/* Emit notification about a created breakpoint.  */

static void
mi_breakpoint_created (struct breakpoint *b)
{
  struct mi_interp *mi = top_level_interpreter_data ();
  struct ui_out *mi_uiout = interp_ui_out (top_level_interpreter ());
  volatile struct gdb_exception e;

  if (mi_suppress_notification.breakpoint)
    return;

  if (b->number <= 0)
    return;

  target_terminal_ours ();
  fprintf_unfiltered (mi->event_channel,
		      "breakpoint-created");
  /* We want the output from gdb_breakpoint_query to go to
     mi->event_channel.  One approach would be to just call
     gdb_breakpoint_query, and then use mi_out_put to send the current
     content of mi_outout into mi->event_channel.  However, that will
     break if anything is output to mi_uiout prior to calling the
     breakpoint_created notifications.  So, we use
     ui_out_redirect.  */
  ui_out_redirect (mi_uiout, mi->event_channel);
  TRY_CATCH (e, RETURN_MASK_ERROR)
    gdb_breakpoint_query (mi_uiout, b->number, NULL);
  ui_out_redirect (mi_uiout, NULL);

  gdb_flush (mi->event_channel);
}

/* Emit notification about deleted breakpoint.  */

static void
mi_breakpoint_deleted (struct breakpoint *b)
{
  struct mi_interp *mi = top_level_interpreter_data ();

  if (mi_suppress_notification.breakpoint)
    return;

  if (b->number <= 0)
    return;

  target_terminal_ours ();

  fprintf_unfiltered (mi->event_channel, "breakpoint-deleted,id=\"%d\"",
		      b->number);

  gdb_flush (mi->event_channel);
}

/* Emit notification about modified breakpoint.  */

static void
mi_breakpoint_modified (struct breakpoint *b)
{
  struct mi_interp *mi = top_level_interpreter_data ();
  struct ui_out *mi_uiout = interp_ui_out (top_level_interpreter ());
  volatile struct gdb_exception e;

  if (mi_suppress_notification.breakpoint)
    return;

  if (b->number <= 0)
    return;

  target_terminal_ours ();
  fprintf_unfiltered (mi->event_channel,
		      "breakpoint-modified");
  /* We want the output from gdb_breakpoint_query to go to
     mi->event_channel.  One approach would be to just call
     gdb_breakpoint_query, and then use mi_out_put to send the current
     content of mi_outout into mi->event_channel.  However, that will
     break if anything is output to mi_uiout prior to calling the
     breakpoint_created notifications.  So, we use
     ui_out_redirect.  */
  ui_out_redirect (mi_uiout, mi->event_channel);
  TRY_CATCH (e, RETURN_MASK_ERROR)
    gdb_breakpoint_query (mi_uiout, b->number, NULL);
  ui_out_redirect (mi_uiout, NULL);

  gdb_flush (mi->event_channel);
}

static int
mi_output_running_pid (struct thread_info *info, void *arg)
{
  ptid_t *ptid = arg;

  if (ptid_get_pid (*ptid) == ptid_get_pid (info->ptid))
    fprintf_unfiltered (raw_stdout,
			"*running,thread-id=\"%d\"\n",
			info->num);

  return 0;
}

static int
mi_inferior_count (struct inferior *inf, void *arg)
{
  if (inf->pid != 0)
    {
      int *count_p = arg;
      (*count_p)++;
    }

  return 0;
}

static void
mi_on_resume (ptid_t ptid)
{
  struct thread_info *tp = NULL;

  if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid))
    tp = inferior_thread ();
  else
    tp = find_thread_ptid (ptid);

  /* Suppress output while calling an inferior function.  */
  if (tp->control.in_infcall)
    return;

  /* To cater for older frontends, emit ^running, but do it only once
     per each command.  We do it here, since at this point we know
     that the target was successfully resumed, and in non-async mode,
     we won't return back to MI interpreter code until the target
     is done running, so delaying the output of "^running" until then
     will make it impossible for frontend to know what's going on.

     In future (MI3), we'll be outputting "^done" here.  */
  if (!running_result_record_printed && mi_proceeded)
    {
      fprintf_unfiltered (raw_stdout, "%s^running\n",
			  current_token ? current_token : "");
    }

  if (PIDGET (ptid) == -1)
    fprintf_unfiltered (raw_stdout, "*running,thread-id=\"all\"\n");
  else if (ptid_is_pid (ptid))
    {
      int count = 0;

      /* Backwards compatibility.  If there's only one inferior,
	 output "all", otherwise, output each resumed thread
	 individually.  */
      iterate_over_inferiors (mi_inferior_count, &count);

      if (count == 1)
	fprintf_unfiltered (raw_stdout, "*running,thread-id=\"all\"\n");
      else
	iterate_over_threads (mi_output_running_pid, &ptid);
    }
  else
    {
      struct thread_info *ti = find_thread_ptid (ptid);

      gdb_assert (ti);
      fprintf_unfiltered (raw_stdout, "*running,thread-id=\"%d\"\n", ti->num);
    }

  if (!running_result_record_printed && mi_proceeded)
    {
      running_result_record_printed = 1;
      /* This is what gdb used to do historically -- printing prompt even if
	 it cannot actually accept any input.  This will be surely removed
	 for MI3, and may be removed even earler.  */
      /* FIXME: review the use of target_is_async_p here -- is that
	 what we want? */
      if (!target_is_async_p ())
	fputs_unfiltered ("(gdb) \n", raw_stdout);
    }
  gdb_flush (raw_stdout);
}

static void
mi_solib_loaded (struct so_list *solib)
{
  struct mi_interp *mi = top_level_interpreter_data ();

  target_terminal_ours ();
  if (gdbarch_has_global_solist (target_gdbarch))
    fprintf_unfiltered (mi->event_channel,
			"library-loaded,id=\"%s\",target-name=\"%s\","
			"host-name=\"%s\",symbols-loaded=\"%d\"",
			solib->so_original_name, solib->so_original_name,
			solib->so_name, solib->symbols_loaded);
  else
    fprintf_unfiltered (mi->event_channel,
			"library-loaded,id=\"%s\",target-name=\"%s\","
			"host-name=\"%s\",symbols-loaded=\"%d\","
			"thread-group=\"i%d\"",
			solib->so_original_name, solib->so_original_name,
			solib->so_name, solib->symbols_loaded,
			current_inferior ()->num);

  gdb_flush (mi->event_channel);
}

static void
mi_solib_unloaded (struct so_list *solib)
{
  struct mi_interp *mi = top_level_interpreter_data ();

  target_terminal_ours ();
  if (gdbarch_has_global_solist (target_gdbarch))
    fprintf_unfiltered (mi->event_channel,
			"library-unloaded,id=\"%s\",target-name=\"%s\","
			"host-name=\"%s\"",
			solib->so_original_name, solib->so_original_name,
			solib->so_name);
  else
    fprintf_unfiltered (mi->event_channel,
			"library-unloaded,id=\"%s\",target-name=\"%s\","
			"host-name=\"%s\",thread-group=\"i%d\"",
			solib->so_original_name, solib->so_original_name,
			solib->so_name, current_inferior ()->num);

  gdb_flush (mi->event_channel);
}

/* Emit notification about the command parameter change.  */

static void
mi_command_param_changed (const char *param, const char *value)
{
  struct mi_interp *mi = top_level_interpreter_data ();
  struct ui_out *mi_uiout = interp_ui_out (top_level_interpreter ());

  if (mi_suppress_notification.cmd_param_changed)
    return;

  target_terminal_ours ();

  fprintf_unfiltered (mi->event_channel,
		      "cmd-param-changed");

  ui_out_redirect (mi_uiout, mi->event_channel);

  ui_out_field_string (mi_uiout, "param", param);
  ui_out_field_string (mi_uiout, "value", value);

  ui_out_redirect (mi_uiout, NULL);

  gdb_flush (mi->event_channel);
}

static int
report_initial_inferior (struct inferior *inf, void *closure)
{
  /* This function is called from mi_intepreter_init, and since
     mi_inferior_added assumes that inferior is fully initialized
     and top_level_interpreter_data is set, we cannot call
     it here.  */
  struct mi_interp *mi = closure;

  target_terminal_ours ();
  fprintf_unfiltered (mi->event_channel,
		      "thread-group-added,id=\"i%d\"",
		      inf->num);
  gdb_flush (mi->event_channel);
  return 0;
}

static struct ui_out *
mi_ui_out (struct interp *interp)
{
  struct mi_interp *mi = interp_data (interp);

  return mi->uiout;
}

/* Save the original value of raw_stdout here when logging, so we can
   restore correctly when done.  */

static struct ui_file *saved_raw_stdout;

/* Do MI-specific logging actions; save raw_stdout, and change all
   the consoles to use the supplied ui-file(s).  */

static int
mi_set_logging (struct interp *interp, int start_log,
		struct ui_file *out, struct ui_file *logfile)
{
  struct mi_interp *mi = interp_data (interp);

  if (!mi)
    return 0;

  if (start_log)
    {
      /* The tee created already is based on gdb_stdout, which for MI
	 is a console and so we end up in an infinite loop of console
	 writing to ui_file writing to console etc.  So discard the
	 existing tee (it hasn't been used yet, and MI won't ever use
	 it), and create one based on raw_stdout instead.  */
      if (logfile)
	{
	  ui_file_delete (out);
	  out = tee_file_new (raw_stdout, 0, logfile, 0);
	}

      saved_raw_stdout = raw_stdout;
      raw_stdout = out;
    }
  else
    {
      raw_stdout = saved_raw_stdout;
      saved_raw_stdout = NULL;
    }
  
  mi_console_set_raw (mi->out, raw_stdout);
  mi_console_set_raw (mi->err, raw_stdout);
  mi_console_set_raw (mi->log, raw_stdout);
  mi_console_set_raw (mi->targ, raw_stdout);
  mi_console_set_raw (mi->event_channel, raw_stdout);

  return 1;
}

extern initialize_file_ftype _initialize_mi_interp; /* -Wmissing-prototypes */

void
_initialize_mi_interp (void)
{
  static const struct interp_procs procs =
    {
      mi_interpreter_init,	/* init_proc */
      mi_interpreter_resume,	/* resume_proc */
      mi_interpreter_suspend,	/* suspend_proc */
      mi_interpreter_exec,	/* exec_proc */
      mi_interpreter_prompt_p,	/* prompt_proc_p */
      mi_ui_out, 		/* ui_out_proc */
      mi_set_logging		/* set_logging_proc */
    };

  /* The various interpreter levels.  */
  interp_add (interp_new (INTERP_MI1, &procs));
  interp_add (interp_new (INTERP_MI2, &procs));
  interp_add (interp_new (INTERP_MI3, &procs));
  interp_add (interp_new (INTERP_MI, &procs));
}