summaryrefslogtreecommitdiff
path: root/gdb/f-lang.c
blob: f538eee680a7371eb502390e783aaed4090e1bdf (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
/* Fortran language support routines for GDB, the GNU debugger.

   Copyright (C) 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003,
   2004, 2005, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.

   Contributed by Motorola.  Adapted from the C parser by Farooq Butt
   (fmbutt@engage.sps.mot.com).

   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 "symtab.h"
#include "gdbtypes.h"
#include "expression.h"
#include "parser-defs.h"
#include "language.h"
#include "f-lang.h"
#include "valprint.h"
#include "value.h"
#include "cp-support.h"
#include "charset.h"


/* Following is dubious stuff that had been in the xcoff reader.  */

struct saved_fcn
  {
    long line_offset;		/* Line offset for function.  */
    struct saved_fcn *next;
  };


struct saved_bf_symnum
  {
    long symnum_fcn;		/* Symnum of function (i.e. .function
				   directive).  */
    long symnum_bf;		/* Symnum of .bf for this function.  */
    struct saved_bf_symnum *next;
  };

typedef struct saved_fcn SAVED_FUNCTION, *SAVED_FUNCTION_PTR;
typedef struct saved_bf_symnum SAVED_BF, *SAVED_BF_PTR;

/* Local functions */

extern void _initialize_f_language (void);
#if 0
static void clear_function_list (void);
static long get_bf_for_fcn (long);
static void clear_bf_list (void);
static void patch_all_commons_by_name (char *, CORE_ADDR, int);
static SAVED_F77_COMMON_PTR find_first_common_named (char *);
static void add_common_entry (struct symbol *);
static void add_common_block (char *, CORE_ADDR, int, char *);
static SAVED_FUNCTION *allocate_saved_function_node (void);
static SAVED_BF_PTR allocate_saved_bf_node (void);
static COMMON_ENTRY_PTR allocate_common_entry_node (void);
static SAVED_F77_COMMON_PTR allocate_saved_f77_common_node (void);
static void patch_common_entries (SAVED_F77_COMMON_PTR, CORE_ADDR, int);
#endif

static void f_printchar (int c, struct type *type, struct ui_file * stream);
static void f_emit_char (int c, struct type *type,
			 struct ui_file * stream, int quoter);

/* Return the encoding that should be used for the character type
   TYPE.  */

static const char *
f_get_encoding (struct type *type)
{
  const char *encoding;

  switch (TYPE_LENGTH (type))
    {
    case 1:
      encoding = target_charset (get_type_arch (type));
      break;
    case 4:
      if (gdbarch_byte_order (get_type_arch (type)) == BFD_ENDIAN_BIG)
	encoding = "UTF-32BE";
      else
	encoding = "UTF-32LE";
      break;

    default:
      error (_("unrecognized character type"));
    }

  return encoding;
}

/* Print the character C on STREAM as part of the contents of a literal
   string whose delimiter is QUOTER.  Note that that format for printing
   characters and strings is language specific.
   FIXME:  This is a copy of the same function from c-exp.y.  It should
   be replaced with a true F77 version.  */

static void
f_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
{
  const char *encoding = f_get_encoding (type);

  generic_emit_char (c, type, stream, quoter, encoding);
}

/* Implementation of la_printchar.  */

static void
f_printchar (int c, struct type *type, struct ui_file *stream)
{
  fputs_filtered ("'", stream);
  LA_EMIT_CHAR (c, type, stream, '\'');
  fputs_filtered ("'", stream);
}

/* Print the character string STRING, printing at most LENGTH characters.
   Printing stops early if the number hits print_max; repeat counts
   are printed as appropriate.  Print ellipses at the end if we
   had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
   FIXME:  This is a copy of the same function from c-exp.y.  It should
   be replaced with a true F77 version.  */

static void
f_printstr (struct ui_file *stream, struct type *type, const gdb_byte *string,
	    unsigned int length, const char *encoding, int force_ellipses,
	    const struct value_print_options *options)
{
  const char *type_encoding = f_get_encoding (type);

  if (TYPE_LENGTH (type) == 4)
    fputs_filtered ("4_", stream);

  if (!encoding || !*encoding)
    encoding = type_encoding;

  generic_printstr (stream, type, string, length, encoding,
		    force_ellipses, '\'', 0, options);
}


/* Table of operators and their precedences for printing expressions.  */

static const struct op_print f_op_print_tab[] =
{
  {"+", BINOP_ADD, PREC_ADD, 0},
  {"+", UNOP_PLUS, PREC_PREFIX, 0},
  {"-", BINOP_SUB, PREC_ADD, 0},
  {"-", UNOP_NEG, PREC_PREFIX, 0},
  {"*", BINOP_MUL, PREC_MUL, 0},
  {"/", BINOP_DIV, PREC_MUL, 0},
  {"DIV", BINOP_INTDIV, PREC_MUL, 0},
  {"MOD", BINOP_REM, PREC_MUL, 0},
  {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
  {".OR.", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
  {".AND.", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
  {".NOT.", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
  {".EQ.", BINOP_EQUAL, PREC_EQUAL, 0},
  {".NE.", BINOP_NOTEQUAL, PREC_EQUAL, 0},
  {".LE.", BINOP_LEQ, PREC_ORDER, 0},
  {".GE.", BINOP_GEQ, PREC_ORDER, 0},
  {".GT.", BINOP_GTR, PREC_ORDER, 0},
  {".LT.", BINOP_LESS, PREC_ORDER, 0},
  {"**", UNOP_IND, PREC_PREFIX, 0},
  {"@", BINOP_REPEAT, PREC_REPEAT, 0},
  {NULL, 0, 0, 0}
};

enum f_primitive_types {
  f_primitive_type_character,
  f_primitive_type_logical,
  f_primitive_type_logical_s1,
  f_primitive_type_logical_s2,
  f_primitive_type_logical_s8,
  f_primitive_type_integer,
  f_primitive_type_integer_s2,
  f_primitive_type_real,
  f_primitive_type_real_s8,
  f_primitive_type_real_s16,
  f_primitive_type_complex_s8,
  f_primitive_type_complex_s16,
  f_primitive_type_void,
  nr_f_primitive_types
};

static void
f_language_arch_info (struct gdbarch *gdbarch,
		      struct language_arch_info *lai)
{
  const struct builtin_f_type *builtin = builtin_f_type (gdbarch);

  lai->string_char_type = builtin->builtin_character;
  lai->primitive_type_vector
    = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_f_primitive_types + 1,
                              struct type *);

  lai->primitive_type_vector [f_primitive_type_character]
    = builtin->builtin_character;
  lai->primitive_type_vector [f_primitive_type_logical]
    = builtin->builtin_logical;
  lai->primitive_type_vector [f_primitive_type_logical_s1]
    = builtin->builtin_logical_s1;
  lai->primitive_type_vector [f_primitive_type_logical_s2]
    = builtin->builtin_logical_s2;
  lai->primitive_type_vector [f_primitive_type_logical_s8]
    = builtin->builtin_logical_s8;
  lai->primitive_type_vector [f_primitive_type_real]
    = builtin->builtin_real;
  lai->primitive_type_vector [f_primitive_type_real_s8]
    = builtin->builtin_real_s8;
  lai->primitive_type_vector [f_primitive_type_real_s16]
    = builtin->builtin_real_s16;
  lai->primitive_type_vector [f_primitive_type_complex_s8]
    = builtin->builtin_complex_s8;
  lai->primitive_type_vector [f_primitive_type_complex_s16]
    = builtin->builtin_complex_s16;
  lai->primitive_type_vector [f_primitive_type_void]
    = builtin->builtin_void;

  lai->bool_type_symbol = "logical";
  lai->bool_type_default = builtin->builtin_logical_s2;
}

/* Remove the modules separator :: from the default break list.  */

static char *
f_word_break_characters (void)
{
  static char *retval;

  if (!retval)
    {
      char *s;

      retval = xstrdup (default_word_break_characters ());
      s = strchr (retval, ':');
      if (s)
	{
	  char *last_char = &s[strlen (s) - 1];

	  *s = *last_char;
	  *last_char = 0;
	}
    }
  return retval;
}

/* Consider the modules separator :: as a valid symbol name character
   class.  */

static char **
f_make_symbol_completion_list (char *text, char *word)
{
  return default_make_symbol_completion_list_break_on (text, word, ":");
}

/* This is declared in c-lang.h but it is silly to import that file for what
   is already just a hack.  */
extern int c_value_print (struct value *, struct ui_file *,
			  const struct value_print_options *);

const struct language_defn f_language_defn =
{
  "fortran",
  language_fortran,
  range_check_on,
  type_check_on,
  case_sensitive_off,
  array_column_major,
  macro_expansion_no,
  &exp_descriptor_standard,
  f_parse,			/* parser */
  f_error,			/* parser error function */
  null_post_parser,
  f_printchar,			/* Print character constant */
  f_printstr,			/* function to print string constant */
  f_emit_char,			/* Function to print a single character */
  f_print_type,			/* Print a type using appropriate syntax */
  default_print_typedef,	/* Print a typedef using appropriate syntax */
  f_val_print,			/* Print a value using appropriate syntax */
  c_value_print,		/* FIXME */
  NULL,				/* Language specific skip_trampoline */
  NULL,                    	/* name_of_this */
  cp_lookup_symbol_nonlocal,	/* lookup_symbol_nonlocal */
  basic_lookup_transparent_type,/* lookup_transparent_type */
  NULL,				/* Language specific symbol demangler */
  NULL,				/* Language specific
				   class_name_from_physname */
  f_op_print_tab,		/* expression operators for printing */
  0,				/* arrays are first-class (not c-style) */
  1,				/* String lower bound */
  f_word_break_characters,
  f_make_symbol_completion_list,
  f_language_arch_info,
  default_print_array_index,
  default_pass_by_reference,
  default_get_string,
  LANG_MAGIC
};

static void *
build_fortran_types (struct gdbarch *gdbarch)
{
  struct builtin_f_type *builtin_f_type
    = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_f_type);

  builtin_f_type->builtin_void
    = arch_type (gdbarch, TYPE_CODE_VOID, 1, "VOID");

  builtin_f_type->builtin_character
    = arch_integer_type (gdbarch, TARGET_CHAR_BIT, 0, "character");

  builtin_f_type->builtin_logical_s1
    = arch_boolean_type (gdbarch, TARGET_CHAR_BIT, 1, "logical*1");

  builtin_f_type->builtin_integer_s2
    = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), 0,
			 "integer*2");

  builtin_f_type->builtin_logical_s2
    = arch_boolean_type (gdbarch, gdbarch_short_bit (gdbarch), 1,
			 "logical*2");

  builtin_f_type->builtin_logical_s8
    = arch_boolean_type (gdbarch, gdbarch_long_long_bit (gdbarch), 1,
			 "logical*8");

  builtin_f_type->builtin_integer
    = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 0,
			 "integer");

  builtin_f_type->builtin_logical
    = arch_boolean_type (gdbarch, gdbarch_int_bit (gdbarch), 1,
			 "logical*4");

  builtin_f_type->builtin_real
    = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
		       "real", NULL);
  builtin_f_type->builtin_real_s8
    = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
		       "real*8", NULL);
  builtin_f_type->builtin_real_s16
    = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
		       "real*16", NULL);

  builtin_f_type->builtin_complex_s8
    = arch_complex_type (gdbarch, "complex*8",
			 builtin_f_type->builtin_real);
  builtin_f_type->builtin_complex_s16
    = arch_complex_type (gdbarch, "complex*16",
			 builtin_f_type->builtin_real_s8);
  builtin_f_type->builtin_complex_s32
    = arch_complex_type (gdbarch, "complex*32",
			 builtin_f_type->builtin_real_s16);

  return builtin_f_type;
}

static struct gdbarch_data *f_type_data;

const struct builtin_f_type *
builtin_f_type (struct gdbarch *gdbarch)
{
  return gdbarch_data (gdbarch, f_type_data);
}

void
_initialize_f_language (void)
{
  f_type_data = gdbarch_data_register_post_init (build_fortran_types);

  add_language (&f_language_defn);
}

#if 0
static SAVED_BF_PTR
allocate_saved_bf_node (void)
{
  SAVED_BF_PTR new;

  new = (SAVED_BF_PTR) xmalloc (sizeof (SAVED_BF));
  return (new);
}

static SAVED_FUNCTION *
allocate_saved_function_node (void)
{
  SAVED_FUNCTION *new;

  new = (SAVED_FUNCTION *) xmalloc (sizeof (SAVED_FUNCTION));
  return (new);
}

static SAVED_F77_COMMON_PTR
allocate_saved_f77_common_node (void)
{
  SAVED_F77_COMMON_PTR new;

  new = (SAVED_F77_COMMON_PTR) xmalloc (sizeof (SAVED_F77_COMMON));
  return (new);
}

static COMMON_ENTRY_PTR
allocate_common_entry_node (void)
{
  COMMON_ENTRY_PTR new;

  new = (COMMON_ENTRY_PTR) xmalloc (sizeof (COMMON_ENTRY));
  return (new);
}
#endif

SAVED_F77_COMMON_PTR head_common_list = NULL;	/* Ptr to 1st saved COMMON  */
SAVED_F77_COMMON_PTR tail_common_list = NULL;	/* Ptr to last saved COMMON  */
SAVED_F77_COMMON_PTR current_common = NULL;	/* Ptr to current COMMON */

#if 0
static SAVED_BF_PTR saved_bf_list = NULL;	/* Ptr to (.bf,function) 
						   list */
static SAVED_BF_PTR saved_bf_list_end = NULL;	/* Ptr to above list's end */
static SAVED_BF_PTR current_head_bf_list = NULL;    /* Current head of
						       above list.  */

static SAVED_BF_PTR tmp_bf_ptr;	/* Generic temporary for use 
				   in macros.  */

/* The following function simply enters a given common block onto 
   the global common block chain.  */

static void
add_common_block (char *name, CORE_ADDR offset, int secnum, char *func_stab)
{
  SAVED_F77_COMMON_PTR tmp;
  char *c, *local_copy_func_stab;

  /* If the COMMON block we are trying to add has a blank 
     name (i.e. "#BLNK_COM") then we set it to __BLANK
     because the darn "#" character makes GDB's input 
     parser have fits.  */


  if (strcmp (name, BLANK_COMMON_NAME_ORIGINAL) == 0
      || strcmp (name, BLANK_COMMON_NAME_MF77) == 0)
    {

      xfree (name);
      name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
      strcpy (name, BLANK_COMMON_NAME_LOCAL);
    }

  tmp = allocate_saved_f77_common_node ();

  local_copy_func_stab = xmalloc (strlen (func_stab) + 1);
  strcpy (local_copy_func_stab, func_stab);

  tmp->name = xmalloc (strlen (name) + 1);

  /* local_copy_func_stab is a stabstring, let us first extract the 
     function name from the stab by NULLing out the ':' character.  */


  c = NULL;
  c = strchr (local_copy_func_stab, ':');

  if (c)
    *c = '\0';
  else
    error (_("Malformed function STAB found in add_common_block()"));


  tmp->owning_function = xmalloc (strlen (local_copy_func_stab) + 1);

  strcpy (tmp->owning_function, local_copy_func_stab);

  strcpy (tmp->name, name);
  tmp->offset = offset;
  tmp->next = NULL;
  tmp->entries = NULL;
  tmp->secnum = secnum;

  current_common = tmp;

  if (head_common_list == NULL)
    {
      head_common_list = tail_common_list = tmp;
    }
  else
    {
      tail_common_list->next = tmp;
      tail_common_list = tmp;
    }
}
#endif

/* The following function simply enters a given common entry onto 
   the "current_common" block that has been saved away.  */

#if 0
static void
add_common_entry (struct symbol *entry_sym_ptr)
{
  COMMON_ENTRY_PTR tmp;



  /* The order of this list is important, since 
     we expect the entries to appear in decl.
     order when we later issue "info common" calls.  */

  tmp = allocate_common_entry_node ();

  tmp->next = NULL;
  tmp->symbol = entry_sym_ptr;

  if (current_common == NULL)
    error (_("Attempt to add COMMON entry with no block open!"));
  else
    {
      if (current_common->entries == NULL)
	{
	  current_common->entries = tmp;
	  current_common->end_of_entries = tmp;
	}
      else
	{
	  current_common->end_of_entries->next = tmp;
	  current_common->end_of_entries = tmp;
	}
    }
}
#endif

/* This routine finds the first encountred COMMON block named "name".  */

#if 0
static SAVED_F77_COMMON_PTR
find_first_common_named (char *name)
{

  SAVED_F77_COMMON_PTR tmp;

  tmp = head_common_list;

  while (tmp != NULL)
    {
      if (strcmp (tmp->name, name) == 0)
	return (tmp);
      else
	tmp = tmp->next;
    }
  return (NULL);
}
#endif

/* This routine finds the first encountred COMMON block named "name" 
   that belongs to function funcname.  */

SAVED_F77_COMMON_PTR
find_common_for_function (char *name, char *funcname)
{

  SAVED_F77_COMMON_PTR tmp;

  tmp = head_common_list;

  while (tmp != NULL)
    {
      if (strcmp (tmp->name, name) == 0
	  && strcmp (tmp->owning_function, funcname) == 0)
	return (tmp);
      else
	tmp = tmp->next;
    }
  return (NULL);
}


#if 0

/* The following function is called to patch up the offsets 
   for the statics contained in the COMMON block named
   "name."  */

static void
patch_common_entries (SAVED_F77_COMMON_PTR blk, CORE_ADDR offset, int secnum)
{
  COMMON_ENTRY_PTR entry;

  blk->offset = offset;		/* Keep this around for future use.  */

  entry = blk->entries;

  while (entry != NULL)
    {
      SYMBOL_VALUE (entry->symbol) += offset;
      SYMBOL_SECTION (entry->symbol) = secnum;

      entry = entry->next;
    }
  blk->secnum = secnum;
}

/* Patch all commons named "name" that need patching.Since COMMON
   blocks occur with relative infrequency, we simply do a linear scan on
   the name.  Eventually, the best way to do this will be a
   hashed-lookup.  Secnum is the section number for the .bss section
   (which is where common data lives).  */

static void
patch_all_commons_by_name (char *name, CORE_ADDR offset, int secnum)
{

  SAVED_F77_COMMON_PTR tmp;

  /* For blank common blocks, change the canonical reprsentation 
     of a blank name */

  if (strcmp (name, BLANK_COMMON_NAME_ORIGINAL) == 0
      || strcmp (name, BLANK_COMMON_NAME_MF77) == 0)
    {
      xfree (name);
      name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
      strcpy (name, BLANK_COMMON_NAME_LOCAL);
    }

  tmp = head_common_list;

  while (tmp != NULL)
    {
      if (COMMON_NEEDS_PATCHING (tmp))
	if (strcmp (tmp->name, name) == 0)
	  patch_common_entries (tmp, offset, secnum);

      tmp = tmp->next;
    }
}
#endif

/* This macro adds the symbol-number for the start of the function 
   (the symbol number of the .bf) referenced by symnum_fcn to a 
   list.  This list, in reality should be a FIFO queue but since 
   #line pragmas sometimes cause line ranges to get messed up 
   we simply create a linear list.  This list can then be searched 
   first by a queueing algorithm and upon failure fall back to 
   a linear scan.  */

#if 0
#define ADD_BF_SYMNUM(bf_sym,fcn_sym) \
  \
  if (saved_bf_list == NULL) \
{ \
    tmp_bf_ptr = allocate_saved_bf_node(); \
      \
	tmp_bf_ptr->symnum_bf = (bf_sym); \
	  tmp_bf_ptr->symnum_fcn = (fcn_sym);  \
	    tmp_bf_ptr->next = NULL; \
	      \
		current_head_bf_list = saved_bf_list = tmp_bf_ptr; \
		  saved_bf_list_end = tmp_bf_ptr; \
		  } \
else \
{  \
     tmp_bf_ptr = allocate_saved_bf_node(); \
       \
         tmp_bf_ptr->symnum_bf = (bf_sym);  \
	   tmp_bf_ptr->symnum_fcn = (fcn_sym);  \
	     tmp_bf_ptr->next = NULL;  \
	       \
		 saved_bf_list_end->next = tmp_bf_ptr;  \
		   saved_bf_list_end = tmp_bf_ptr; \
		   }
#endif

/* This function frees the entire (.bf,function) list.  */

#if 0
static void
clear_bf_list (void)
{

  SAVED_BF_PTR tmp = saved_bf_list;
  SAVED_BF_PTR next = NULL;

  while (tmp != NULL)
    {
      next = tmp->next;
      xfree (tmp);
      tmp = next;
    }
  saved_bf_list = NULL;
}
#endif

int global_remote_debug;

#if 0

static long
get_bf_for_fcn (long the_function)
{
  SAVED_BF_PTR tmp;
  int nprobes = 0;

  /* First use a simple queuing algorithm (i.e. look and see if the 
     item at the head of the queue is the one you want).  */

  if (saved_bf_list == NULL)
    internal_error (__FILE__, __LINE__,
		    _("cannot get .bf node off empty list"));

  if (current_head_bf_list != NULL)
    if (current_head_bf_list->symnum_fcn == the_function)
      {
	if (global_remote_debug)
	  fprintf_unfiltered (gdb_stderr, "*");

	tmp = current_head_bf_list;
	current_head_bf_list = current_head_bf_list->next;
	return (tmp->symnum_bf);
      }

  /* If the above did not work (probably because #line directives were 
     used in the sourcefile and they messed up our internal tables) we now do
     the ugly linear scan.  */

  if (global_remote_debug)
    fprintf_unfiltered (gdb_stderr, "\ndefaulting to linear scan\n");

  nprobes = 0;
  tmp = saved_bf_list;
  while (tmp != NULL)
    {
      nprobes++;
      if (tmp->symnum_fcn == the_function)
	{
	  if (global_remote_debug)
	    fprintf_unfiltered (gdb_stderr, "Found in %d probes\n", nprobes);
	  current_head_bf_list = tmp->next;
	  return (tmp->symnum_bf);
	}
      tmp = tmp->next;
    }

  return (-1);
}

static SAVED_FUNCTION_PTR saved_function_list = NULL;
static SAVED_FUNCTION_PTR saved_function_list_end = NULL;

static void
clear_function_list (void)
{
  SAVED_FUNCTION_PTR tmp = saved_function_list;
  SAVED_FUNCTION_PTR next = NULL;

  while (tmp != NULL)
    {
      next = tmp->next;
      xfree (tmp);
      tmp = next;
    }

  saved_function_list = NULL;
}
#endif