summaryrefslogtreecommitdiff
path: root/gdb/gdb-events.sh
blob: 9965f05577f5373cc851774c52d81e7ddd0439a9 (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
#!/bin/sh

# User Interface Events.
# Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
#
# Contributed by Cygnus Solutions.
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

#
# What happens next:
#

# The gdb-events.h/gdb-events.c files this script generates are commited
# and published.

# Any UI module that is installing events is changed so that the
# events are installed using the ``set_gdb_events()'' and
# ``gdb_event_hooks()'' interfaces.  There could prove to be an issue
# here with respect to annotate.  We might need to accomodate a hook
# stack that allows several ui blocks to install their own events.

# Each of the variable events (as currently generated) is converted
# to either a straight function call or a function call with a
# predicate.


IFS=:

read="class returntype function formal actual attrib"

function_list ()
{
  # category:
  #        # -> disable
  #        * -> compatibility - pointer variable that is initialized
  #             by set_gdb_events().
  #        ? -> Predicate and function proper.
  #        f -> always call (must have a void returntype)
  # return-type
  # name
  # formal argument list
  # actual argument list
  # attributes
  # description
  cat <<EOF |
f:void:breakpoint_create:int b:b
f:void:breakpoint_delete:int b:b
f:void:breakpoint_modify:int b:b
f:void:tracepoint_create:int number:number
f:void:tracepoint_delete:int number:number
f:void:tracepoint_modify:int number:number
f:void:architecture_changed:void
#*:void:annotate_starting_hook:void
#*:void:annotate_stopped_hook:void
#*:void:annotate_signalled_hook:void
#*:void:annotate_signal_hook:void
#*:void:annotate_exited_hook:void
##*:void:print_register_hook:int
##*:CORE_ADDR:find_toc_address_hook:CORE_ADDR
##*:void:sparc_print_register_hook:int regno:regno
#*:void:target_resume_hook:void
#*:void:target_wait_loop_hook:void
#*:void:init_gdb_hook:char *argv0:argv0
#*:void:command_loop_hook:void
#*:void:fputs_unfiltered_hook:const char *linebuff,struct ui_file *stream:linebuff, stream
#*:void:print_frame_info_listing_hook:struct symtab *s, int line, int stopline, int noerror:s, line, stopline, noerror
#*:int:query_hook:const char *query, va_list args:query, args
#*:void:warning_hook:const char *string, va_list args:string, args
#*:void:target_output_hook:char *b:b
#*:void:interactive_hook:void
#*:void:registers_changed_hook:void
#*:void:readline_begin_hook:char *format, ...:format
#*:char *:readline_hook:char *prompt:prompt
#*:void:readline_end_hook:void
#*:void:register_changed_hook:int regno:regno
#*:void:memory_changed_hook:CORE_ADDR addr, int len:addr, len
#*:void:context_hook:int num:num
#*:int:target_wait_hook:int pid, struct target_waitstatus *status:pid, status
#*:void:call_command_hook:struct cmd_list_element *c, char *cmd, int from_tty:c, cmd, from_tty
#*:NORETURN void:error_hook:void:: ATTR_NORETURN
#*:void:error_begin_hook:void
##*:int:target_architecture_hook:const struct bfd_arch_info *
#*:void:exec_file_display_hook:char *filename:filename
#*:void:file_changed_hook:char *filename:filename
##*:void:specify_exec_file_hook:
#*:int:gdb_load_progress_hook:char *section, unsigned long num:section, num
#*:void:pre_add_symbol_hook:char *name:name
#*:void:post_add_symbol_hook:void
#*:void:selected_frame_level_changed_hook:int level:level
#*:int:gdb_loop_hook:int signo:signo
##*:void:solib_create_inferior_hook:void
##*:void:xcoff_relocate_symtab_hook:unsigned int
EOF
  grep -v '^#'
}

copyright ()
{
  cat <<EOF
/* User Interface Events.

   Copyright 1999, 2001, 2002 Free Software Foundation, Inc.

   Contributed by Cygnus Solutions.

   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 2 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, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

/* Work in progress */

/* This file was created with the aid of \`\`gdb-events.sh''.

   The bourn shell script \`\`gdb-events.sh'' creates the files
   \`\`new-gdb-events.c'' and \`\`new-gdb-events.h and then compares
   them against the existing \`\`gdb-events.[hc]''.  Any differences
   found being reported.

   If editing this file, please also run gdb-events.sh and merge any
   changes into that script. Conversely, when making sweeping changes
   to this file, modifying gdb-events.sh and using its output may
   prove easier. */

EOF
}

#
# The .h file
#

exec > new-gdb-events.h
copyright
cat <<EOF

#ifndef GDB_EVENTS_H
#define GDB_EVENTS_H

#ifndef WITH_GDB_EVENTS
#define WITH_GDB_EVENTS 1
#endif
EOF

# pointer declarations
echo ""
echo ""
cat <<EOF
/* COMPAT: pointer variables for old, unconverted events.
   A call to set_gdb_events() will automatically update these. */
EOF
echo ""
function_list | while eval read $read
do
  case "${class}" in
    "*" )
	echo "extern ${returntype} (*${function}_event) (${formal})${attrib};"
	;;
  esac
done

# function typedef's
echo ""
echo ""
cat <<EOF
/* Type definition of all hook functions.
   Recommended pratice is to first declare each hook function using
   the below ftype and then define it. */
EOF
echo ""
function_list | while eval read $read
do
  echo "typedef ${returntype} (gdb_events_${function}_ftype) (${formal});"
done

# gdb_events object
echo ""
echo ""
cat <<EOF
/* gdb-events: object. */
EOF
echo ""
echo "struct gdb_events"
echo "  {"
function_list | while eval read $read
do
  echo "    gdb_events_${function}_ftype *${function}${attrib};"
done
echo "  };"

# function declarations
echo ""
echo ""
cat <<EOF
/* Interface into events functions.
   Where a *_p() predicate is present, it must be called before
   calling the hook proper. */
EOF
function_list | while eval read $read
do
  case "${class}" in
    "*" ) continue ;;
    "?" )
	echo "extern int ${function}_p (void);"
        echo "extern ${returntype} ${function}_event (${formal})${attrib};"
	;;
    "f" )
	echo "extern ${returntype} ${function}_event (${formal})${attrib};"
	;;
  esac
done

# function macros
echo ""
echo ""
cat <<EOF
/* When GDB_EVENTS are not being used, completly disable them. */
EOF
echo ""
echo "#if !WITH_GDB_EVENTS"
function_list | while eval read $read
do
  case "${class}" in
    "*" ) continue ;;
    "?" )
	echo "#define ${function}_event_p() 0"
	echo "#define ${function}_event(${actual}) 0"
	;;
    "f" )
	echo "#define ${function}_event(${actual}) 0"
	;;
  esac
done
echo "#endif"

# our set function
cat <<EOF

/* Install custom gdb-events hooks. */
extern struct gdb_events *set_gdb_event_hooks (struct gdb_events *vector);

/* Deliver any pending events. */
extern void gdb_events_deliver (struct gdb_events *vector);

#if !WITH_GDB_EVENTS
#define set_gdb_events(x) 0
#define set_gdb_event_hooks(x) 0
#define gdb_events_deliver(x) 0
#endif
EOF

# close it off
echo ""
echo "#endif"
exec 1>&2
#../move-if-change new-gdb-events.h gdb-events.h
if test -r gdb-events.h
then
  diff -c gdb-events.h new-gdb-events.h
  if [ $? = 1 ]
  then
    echo "gdb-events.h changed? cp new-gdb-events.h gdb-events.h" 1>&2
  fi
else
  echo "File missing? mv new-gdb-events.h gdb-events.h" 1>&2
fi



#
# C file
#

exec > new-gdb-events.c
copyright
cat <<EOF

#include "defs.h"
#include "gdb-events.h"
#include "gdbcmd.h"

#if WITH_GDB_EVENTS
static struct gdb_events null_event_hooks;
static struct gdb_events queue_event_hooks;
static struct gdb_events *current_event_hooks = &null_event_hooks;
#endif

int gdb_events_debug;
EOF

# global pointer variables - always have this
#echo ""
#function_list | while eval read $read
#do
#  case "${class}" in
#    "*" )
#	echo "${returntype} (*${function}_event) (${formal})${attrib} = 0;"
#	;;
#  esac
#done

# function bodies
echo ""
echo "#if WITH_GDB_EVENTS"
function_list | while eval read $read
do
  case "${class}" in
    "*" ) continue ;;
    "?" )
cat <<EOF

int
${function}_event_p (${formal})
{
  return current_event_hooks->${function};
}

${returntype}
${function}_event (${formal})
{
  return current_events->${function} (${actual});
}
EOF
	;;
     "f" )
cat <<EOF

void
${function}_event (${formal})
{
  if (gdb_events_debug)
    fprintf_unfiltered (gdb_stdlog, "${function}_event\n");
  if (!current_event_hooks->${function})
    return;
  current_event_hooks->${function} (${actual});
}
EOF
	;;
  esac
done
echo ""
echo "#endif"

# Set hooks function
echo ""
cat <<EOF
#if WITH_GDB_EVENTS
struct gdb_events *
set_gdb_event_hooks (struct gdb_events *vector)
{
  struct gdb_events *old_events = current_event_hooks;
  if (vector == NULL)
    current_event_hooks = &queue_event_hooks;
  else
    current_event_hooks = vector;
  return old_events;
EOF
function_list | while eval read $read
do
  case "${class}" in
    "*" )
      echo "  ${function}_event = hooks->${function};"
      ;;
  esac
done
cat <<EOF
}
#endif
EOF

# event type
echo ""
cat <<EOF
enum gdb_event
{
EOF
function_list | while eval read $read
do
  case "${class}" in
    "f" )
      echo "  ${function},"
      ;;
  esac
done
cat <<EOF
  nr_gdb_events
};
EOF

# event data
echo ""
function_list | while eval read $read
do
  case "${class}" in
    "f" )
      if test ${actual}
      then
        echo "struct ${function}"
        echo "  {"
        echo "    `echo ${formal} | tr '[,]' '[;]'`;"
        echo "  };"
        echo ""
      fi
      ;;
  esac
done

# event queue
cat <<EOF
struct event
  {
    enum gdb_event type;
    struct event *next;
    union
      {
EOF
function_list | while eval read $read
do
  case "${class}" in
    "f" )
      if test ${actual}
      then
        echo "        struct ${function} ${function};"
      fi
      ;;
  esac
done
cat <<EOF
      }
    data;
  };
struct event *pending_events;
struct event *delivering_events;
EOF

# append
echo ""
cat <<EOF
static void
append (struct event *new_event)
{
  struct event **event = &pending_events;
  while ((*event) != NULL)
    event = &((*event)->next);
  (*event) = new_event;
  (*event)->next = NULL;
}
EOF

# schedule a given event
function_list | while eval read $read
do
  case "${class}" in
    "f" )
      echo ""
      echo "static void"
      echo "queue_${function} (${formal})"
      echo "{"
      echo "  struct event *event = XMALLOC (struct event);"
      echo "  event->type = ${function};"
      for arg in `echo ${actual} | tr '[,]' '[:]' | tr -d '[ ]'`; do
        echo "  event->data.${function}.${arg} = ${arg};"
      done
      echo "  append (event);"
      echo "}"
      ;;
  esac
done

# deliver
echo ""
cat <<EOF
void
gdb_events_deliver (struct gdb_events *vector)
{
  /* Just zap any events left around from last time. */
  while (delivering_events != NULL)
    {
      struct event *event = delivering_events;
      delivering_events = event->next;
      xfree (event);
    }
  /* Process any pending events.  Because one of the deliveries could
     bail out we move everything off of the pending queue onto an
     in-progress queue where it can, later, be cleaned up if
     necessary. */
  delivering_events = pending_events;
  pending_events = NULL;
  while (delivering_events != NULL)
    {
      struct event *event = delivering_events;
      switch (event->type)
        {
EOF
function_list | while eval read $read
do
  case "${class}" in
    "f" )
      echo "        case ${function}:"
      if test ${actual}
      then
        echo "          vector->${function}"
        sep="            ("
        ass=""
        for arg in `echo ${actual} | tr '[,]' '[:]' | tr -d '[ ]'`; do
          ass="${ass}${sep}event->data.${function}.${arg}"
	  sep=",
               "
        done
        echo "${ass});"
      else
        echo "          vector->${function} ();"
      fi
      echo "          break;"
      ;;
  esac
done
cat <<EOF
        }
      delivering_events = event->next;
      xfree (event);
    }
}
EOF

# Finally the initialization
echo ""
cat <<EOF
void _initialize_gdb_events (void);
void
_initialize_gdb_events (void)
{
  struct cmd_list_element *c;
#if WITH_GDB_EVENTS
EOF
function_list | while eval read $read
do
  case "${class}" in
    "f" )
      echo "  queue_event_hooks.${function} = queue_${function};"
      ;;
  esac
done
cat <<EOF
#endif

  c = add_set_cmd ("eventdebug", class_maintenance, var_zinteger,
		   (char *) (&gdb_events_debug), "Set event debugging.\n\\
When non-zero, event/notify debugging is enabled.", &setlist);
  deprecate_cmd (c, "set debug event");
  deprecate_cmd (add_show_from_set (c, &showlist), "show debug event");

  add_show_from_set (add_set_cmd ("event",
                                  class_maintenance,
                                  var_zinteger,
                                  (char *) (&gdb_events_debug),
                                  "Set event debugging.\n\\
When non-zero, event/notify debugging is enabled.", &setdebuglist),
		     &showdebuglist);
}
EOF

# close things off
exec 1>&2
#../move-if-change new-gdb-events.c gdb-events.c
# Replace any leading spaces with tabs
sed < new-gdb-events.c > tmp-gdb-events.c \
    -e 's/\(	\)*        /\1	/g'
mv tmp-gdb-events.c new-gdb-events.c
# Move if changed?
if test -r gdb-events.c
then
  diff -c gdb-events.c new-gdb-events.c
  if [ $? = 1 ]
  then
    echo "gdb-events.c changed? cp new-gdb-events.c gdb-events.c" 1>&2
  fi
else
  echo "File missing? mv new-gdb-events.c gdb-events.c" 1>&2
fi