gdb/f-lang.c

   1 /* Fortran language support routines for GDB, the GNU debugger.
   2
   3    Copyright (C) 1993-1996, 1998-2005, 2007-2012 Free Software
   4    Foundation, Inc.
   5
   6    Contributed by Motorola.  Adapted from the C parser by Farooq Butt
   7    (fmbutt@engage.sps.mot.com).
   8
   9    This file is part of GDB.
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 3 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  23
  24 #include "defs.h"
  25 #include "gdb_string.h"
  26 #include "symtab.h"
  27 #include "gdbtypes.h"
  28 #include "expression.h"
  29 #include "parser-defs.h"
  30 #include "language.h"
  31 #include "f-lang.h"
  32 #include "valprint.h"
  33 #include "value.h"
  34 #include "cp-support.h"
  35 #include "charset.h"
  36 #include "c-lang.h"
  37
  38
  39 /* Following is dubious stuff that had been in the xcoff reader.  */
  40
  41 struct saved_fcn
  42   {
  43     long line_offset;           /* Line offset for function.  */
  44     struct saved_fcn *next;
  45   };
  46
  47
  48 struct saved_bf_symnum
  49   {
  50     long symnum_fcn;            /* Symnum of function (i.e. .function
  51                                    directive).  */
  52     long symnum_bf;             /* Symnum of .bf for this function.  */
  53     struct saved_bf_symnum *next;
  54   };
  55
  56 typedef struct saved_fcn SAVED_FUNCTION, *SAVED_FUNCTION_PTR;
  57 typedef struct saved_bf_symnum SAVED_BF, *SAVED_BF_PTR;
  58
  59 /* Local functions */
  60
  61 extern void _initialize_f_language (void);
  62 #if 0
  63 static void clear_function_list (void);
  64 static long get_bf_for_fcn (long);
  65 static void clear_bf_list (void);
  66 static void patch_all_commons_by_name (char *, CORE_ADDR, int);
  67 static SAVED_F77_COMMON_PTR find_first_common_named (char *);
  68 static void add_common_entry (struct symbol *);
  69 static void add_common_block (char *, CORE_ADDR, int, char *);
  70 static SAVED_FUNCTION *allocate_saved_function_node (void);
  71 static SAVED_BF_PTR allocate_saved_bf_node (void);
  72 static COMMON_ENTRY_PTR allocate_common_entry_node (void);
  73 static SAVED_F77_COMMON_PTR allocate_saved_f77_common_node (void);
  74 static void patch_common_entries (SAVED_F77_COMMON_PTR, CORE_ADDR, int);
  75 #endif
  76
  77 static void f_printchar (int c, struct type *type, struct ui_file * stream);
  78 static void f_emit_char (int c, struct type *type,
  79                          struct ui_file * stream, int quoter);
  80
  81 /* Return the encoding that should be used for the character type
  82    TYPE.  */
  83
  84 static const char *
  85 f_get_encoding (struct type *type)
  86 {
  87   const char *encoding;
  88
  89   switch (TYPE_LENGTH (type))
  90     {
  91     case 1:
  92       encoding = target_charset (get_type_arch (type));
  93       break;
  94     case 4:
  95       if (gdbarch_byte_order (get_type_arch (type)) == BFD_ENDIAN_BIG)
  96         encoding = "UTF-32BE";
  97       else
  98         encoding = "UTF-32LE";
  99       break;
 100
 101     default:
 102       error (_("unrecognized character type"));
 103     }
 104
 105   return encoding;
 106 }
 107
 108 /* Print the character C on STREAM as part of the contents of a literal
 109    string whose delimiter is QUOTER.  Note that that format for printing
 110    characters and strings is language specific.
 111    FIXME:  This is a copy of the same function from c-exp.y.  It should
 112    be replaced with a true F77 version.  */
 113
 114 static void
 115 f_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
 116 {
 117   const char *encoding = f_get_encoding (type);
 118
 119   generic_emit_char (c, type, stream, quoter, encoding);
 120 }
 121
 122 /* Implementation of la_printchar.  */
 123
 124 static void
 125 f_printchar (int c, struct type *type, struct ui_file *stream)
 126 {
 127   fputs_filtered ("'", stream);
 128   LA_EMIT_CHAR (c, type, stream, '\'');
 129   fputs_filtered ("'", stream);
 130 }
 131
 132 /* Print the character string STRING, printing at most LENGTH characters.
 133    Printing stops early if the number hits print_max; repeat counts
 134    are printed as appropriate.  Print ellipses at the end if we
 135    had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
 136    FIXME:  This is a copy of the same function from c-exp.y.  It should
 137    be replaced with a true F77 version.  */
 138
 139 static void
 140 f_printstr (struct ui_file *stream, struct type *type, const gdb_byte *string,
 141             unsigned int length, const char *encoding, int force_ellipses,
 142             const struct value_print_options *options)
 143 {
 144   const char *type_encoding = f_get_encoding (type);
 145
 146   if (TYPE_LENGTH (type) == 4)
 147     fputs_filtered ("4_", stream);
 148
 149   if (!encoding || !*encoding)
 150     encoding = type_encoding;
 151
 152   generic_printstr (stream, type, string, length, encoding,
 153                     force_ellipses, '\'', 0, options);
 154 }
 155 \f
 156
 157 /* Table of operators and their precedences for printing expressions.  */
 158
 159 static const struct op_print f_op_print_tab[] =
 160 {
 161   {"+", BINOP_ADD, PREC_ADD, 0},
 162   {"+", UNOP_PLUS, PREC_PREFIX, 0},
 163   {"-", BINOP_SUB, PREC_ADD, 0},
 164   {"-", UNOP_NEG, PREC_PREFIX, 0},
 165   {"*", BINOP_MUL, PREC_MUL, 0},
 166   {"/", BINOP_DIV, PREC_MUL, 0},
 167   {"DIV", BINOP_INTDIV, PREC_MUL, 0},
 168   {"MOD", BINOP_REM, PREC_MUL, 0},
 169   {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
 170   {".OR.", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
 171   {".AND.", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
 172   {".NOT.", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
 173   {".EQ.", BINOP_EQUAL, PREC_EQUAL, 0},
 174   {".NE.", BINOP_NOTEQUAL, PREC_EQUAL, 0},
 175   {".LE.", BINOP_LEQ, PREC_ORDER, 0},
 176   {".GE.", BINOP_GEQ, PREC_ORDER, 0},
 177   {".GT.", BINOP_GTR, PREC_ORDER, 0},
 178   {".LT.", BINOP_LESS, PREC_ORDER, 0},
 179   {"**", UNOP_IND, PREC_PREFIX, 0},
 180   {"@", BINOP_REPEAT, PREC_REPEAT, 0},
 181   {NULL, 0, 0, 0}
 182 };
 183 \f
 184 enum f_primitive_types {
 185   f_primitive_type_character,
 186   f_primitive_type_logical,
 187   f_primitive_type_logical_s1,
 188   f_primitive_type_logical_s2,
 189   f_primitive_type_logical_s8,
 190   f_primitive_type_integer,
 191   f_primitive_type_integer_s2,
 192   f_primitive_type_real,
 193   f_primitive_type_real_s8,
 194   f_primitive_type_real_s16,
 195   f_primitive_type_complex_s8,
 196   f_primitive_type_complex_s16,
 197   f_primitive_type_void,
 198   nr_f_primitive_types
 199 };
 200
 201 static void
 202 f_language_arch_info (struct gdbarch *gdbarch,
 203                       struct language_arch_info *lai)
 204 {
 205   const struct builtin_f_type *builtin = builtin_f_type (gdbarch);
 206
 207   lai->string_char_type = builtin->builtin_character;
 208   lai->primitive_type_vector
 209     = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_f_primitive_types + 1,
 210                               struct type *);
 211
 212   lai->primitive_type_vector [f_primitive_type_character]
 213     = builtin->builtin_character;
 214   lai->primitive_type_vector [f_primitive_type_logical]
 215     = builtin->builtin_logical;
 216   lai->primitive_type_vector [f_primitive_type_logical_s1]
 217     = builtin->builtin_logical_s1;
 218   lai->primitive_type_vector [f_primitive_type_logical_s2]
 219     = builtin->builtin_logical_s2;
 220   lai->primitive_type_vector [f_primitive_type_logical_s8]
 221     = builtin->builtin_logical_s8;
 222   lai->primitive_type_vector [f_primitive_type_real]
 223     = builtin->builtin_real;
 224   lai->primitive_type_vector [f_primitive_type_real_s8]
 225     = builtin->builtin_real_s8;
 226   lai->primitive_type_vector [f_primitive_type_real_s16]
 227     = builtin->builtin_real_s16;
 228   lai->primitive_type_vector [f_primitive_type_complex_s8]
 229     = builtin->builtin_complex_s8;
 230   lai->primitive_type_vector [f_primitive_type_complex_s16]
 231     = builtin->builtin_complex_s16;
 232   lai->primitive_type_vector [f_primitive_type_void]
 233     = builtin->builtin_void;
 234
 235   lai->bool_type_symbol = "logical";
 236   lai->bool_type_default = builtin->builtin_logical_s2;
 237 }
 238
 239 /* Remove the modules separator :: from the default break list.  */
 240
 241 static char *
 242 f_word_break_characters (void)
 243 {
 244   static char *retval;
 245
 246   if (!retval)
 247     {
 248       char *s;
 249
 250       retval = xstrdup (default_word_break_characters ());
 251       s = strchr (retval, ':');
 252       if (s)
 253         {
 254           char *last_char = &s[strlen (s) - 1];
 255
 256           *s = *last_char;
 257           *last_char = 0;
 258         }
 259     }
 260   return retval;
 261 }
 262
 263 /* Consider the modules separator :: as a valid symbol name character
 264    class.  */
 265
 266 static VEC (char_ptr) *
 267 f_make_symbol_completion_list (char *text, char *word)
 268 {
 269   return default_make_symbol_completion_list_break_on (text, word, ":");
 270 }
 271
 272 const struct language_defn f_language_defn =
 273 {
 274   "fortran",
 275   language_fortran,
 276   range_check_on,
 277   case_sensitive_off,
 278   array_column_major,
 279   macro_expansion_no,
 280   &exp_descriptor_standard,
 281   f_parse,                      /* parser */
 282   f_error,                      /* parser error function */
 283   null_post_parser,
 284   f_printchar,                  /* Print character constant */
 285   f_printstr,                   /* function to print string constant */
 286   f_emit_char,                  /* Function to print a single character */
 287   f_print_type,                 /* Print a type using appropriate syntax */
 288   default_print_typedef,        /* Print a typedef using appropriate syntax */
 289   f_val_print,                  /* Print a value using appropriate syntax */
 290   c_value_print,                /* FIXME */
 291   default_read_var_value,       /* la_read_var_value */
 292   NULL,                         /* Language specific skip_trampoline */
 293   NULL,                         /* name_of_this */
 294   cp_lookup_symbol_nonlocal,    /* lookup_symbol_nonlocal */
 295   basic_lookup_transparent_type,/* lookup_transparent_type */
 296   NULL,                         /* Language specific symbol demangler */
 297   NULL,                         /* Language specific
 298                                    class_name_from_physname */
 299   f_op_print_tab,               /* expression operators for printing */
 300   0,                            /* arrays are first-class (not c-style) */
 301   1,                            /* String lower bound */
 302   f_word_break_characters,
 303   f_make_symbol_completion_list,
 304   f_language_arch_info,
 305   default_print_array_index,
 306   default_pass_by_reference,
 307   default_get_string,
 308   NULL,                         /* la_get_symbol_name_cmp */
 309   iterate_over_symbols,
 310   LANG_MAGIC
 311 };
 312
 313 static void *
 314 build_fortran_types (struct gdbarch *gdbarch)
 315 {
 316   struct builtin_f_type *builtin_f_type
 317     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_f_type);
 318
 319   builtin_f_type->builtin_void
 320     = arch_type (gdbarch, TYPE_CODE_VOID, 1, "VOID");
 321
 322   builtin_f_type->builtin_character
 323     = arch_integer_type (gdbarch, TARGET_CHAR_BIT, 0, "character");
 324
 325   builtin_f_type->builtin_logical_s1
 326     = arch_boolean_type (gdbarch, TARGET_CHAR_BIT, 1, "logical*1");
 327
 328   builtin_f_type->builtin_integer_s2
 329     = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), 0,
 330                          "integer*2");
 331
 332   builtin_f_type->builtin_logical_s2
 333     = arch_boolean_type (gdbarch, gdbarch_short_bit (gdbarch), 1,
 334                          "logical*2");
 335
 336   builtin_f_type->builtin_logical_s8
 337     = arch_boolean_type (gdbarch, gdbarch_long_long_bit (gdbarch), 1,
 338                          "logical*8");
 339
 340   builtin_f_type->builtin_integer
 341     = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 0,
 342                          "integer");
 343
 344   builtin_f_type->builtin_logical
 345     = arch_boolean_type (gdbarch, gdbarch_int_bit (gdbarch), 1,
 346                          "logical*4");
 347
 348   builtin_f_type->builtin_real
 349     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 350                        "real", NULL);
 351   builtin_f_type->builtin_real_s8
 352     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 353                        "real*8", NULL);
 354   builtin_f_type->builtin_real_s16
 355     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 356                        "real*16", NULL);
 357
 358   builtin_f_type->builtin_complex_s8
 359     = arch_complex_type (gdbarch, "complex*8",
 360                          builtin_f_type->builtin_real);
 361   builtin_f_type->builtin_complex_s16
 362     = arch_complex_type (gdbarch, "complex*16",
 363                          builtin_f_type->builtin_real_s8);
 364   builtin_f_type->builtin_complex_s32
 365     = arch_complex_type (gdbarch, "complex*32",
 366                          builtin_f_type->builtin_real_s16);
 367
 368   return builtin_f_type;
 369 }
 370
 371 static struct gdbarch_data *f_type_data;
 372
 373 const struct builtin_f_type *
 374 builtin_f_type (struct gdbarch *gdbarch)
 375 {
 376   return gdbarch_data (gdbarch, f_type_data);
 377 }
 378
 379 void
 380 _initialize_f_language (void)
 381 {
 382   f_type_data = gdbarch_data_register_post_init (build_fortran_types);
 383
 384   add_language (&f_language_defn);
 385 }
 386
 387 #if 0
 388 static SAVED_BF_PTR
 389 allocate_saved_bf_node (void)
 390 {
 391   SAVED_BF_PTR new;
 392
 393   new = (SAVED_BF_PTR) xmalloc (sizeof (SAVED_BF));
 394   return (new);
 395 }
 396
 397 static SAVED_FUNCTION *
 398 allocate_saved_function_node (void)
 399 {
 400   SAVED_FUNCTION *new;
 401
 402   new = (SAVED_FUNCTION *) xmalloc (sizeof (SAVED_FUNCTION));
 403   return (new);
 404 }
 405
 406 static SAVED_F77_COMMON_PTR
 407 allocate_saved_f77_common_node (void)
 408 {
 409   SAVED_F77_COMMON_PTR new;
 410
 411   new = (SAVED_F77_COMMON_PTR) xmalloc (sizeof (SAVED_F77_COMMON));
 412   return (new);
 413 }
 414
 415 static COMMON_ENTRY_PTR
 416 allocate_common_entry_node (void)
 417 {
 418   COMMON_ENTRY_PTR new;
 419
 420   new = (COMMON_ENTRY_PTR) xmalloc (sizeof (COMMON_ENTRY));
 421   return (new);
 422 }
 423 #endif
 424
 425 SAVED_F77_COMMON_PTR head_common_list = NULL;   /* Ptr to 1st saved COMMON  */
 426 SAVED_F77_COMMON_PTR tail_common_list = NULL;   /* Ptr to last saved COMMON  */
 427 SAVED_F77_COMMON_PTR current_common = NULL;     /* Ptr to current COMMON */
 428
 429 #if 0
 430 static SAVED_BF_PTR saved_bf_list = NULL;       /* Ptr to (.bf,function)
 431                                                    list */
 432 static SAVED_BF_PTR saved_bf_list_end = NULL;   /* Ptr to above list's end */
 433 static SAVED_BF_PTR current_head_bf_list = NULL;    /* Current head of
 434                                                        above list.  */
 435
 436 static SAVED_BF_PTR tmp_bf_ptr; /* Generic temporary for use
 437                                    in macros.  */
 438
 439 /* The following function simply enters a given common block onto
 440    the global common block chain.  */
 441
 442 static void
 443 add_common_block (char *name, CORE_ADDR offset, int secnum, char *func_stab)
 444 {
 445   SAVED_F77_COMMON_PTR tmp;
 446   char *c, *local_copy_func_stab;
 447
 448   /* If the COMMON block we are trying to add has a blank
 449      name (i.e. "#BLNK_COM") then we set it to __BLANK
 450      because the darn "#" character makes GDB's input
 451      parser have fits.  */
 452
 453
 454   if (strcmp (name, BLANK_COMMON_NAME_ORIGINAL) == 0
 455       || strcmp (name, BLANK_COMMON_NAME_MF77) == 0)
 456     {
 457
 458       xfree (name);
 459       name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
 460       strcpy (name, BLANK_COMMON_NAME_LOCAL);
 461     }
 462
 463   tmp = allocate_saved_f77_common_node ();
 464
 465   local_copy_func_stab = xmalloc (strlen (func_stab) + 1);
 466   strcpy (local_copy_func_stab, func_stab);
 467
 468   tmp->name = xmalloc (strlen (name) + 1);
 469
 470   /* local_copy_func_stab is a stabstring, let us first extract the
 471      function name from the stab by NULLing out the ':' character.  */
 472
 473
 474   c = NULL;
 475   c = strchr (local_copy_func_stab, ':');
 476
 477   if (c)
 478     *c = '\0';
 479   else
 480     error (_("Malformed function STAB found in add_common_block()"));
 481
 482
 483   tmp->owning_function = xmalloc (strlen (local_copy_func_stab) + 1);
 484
 485   strcpy (tmp->owning_function, local_copy_func_stab);
 486
 487   strcpy (tmp->name, name);
 488   tmp->offset = offset;
 489   tmp->next = NULL;
 490   tmp->entries = NULL;
 491   tmp->secnum = secnum;
 492
 493   current_common = tmp;
 494
 495   if (head_common_list == NULL)
 496     {
 497       head_common_list = tail_common_list = tmp;
 498     }
 499   else
 500     {
 501       tail_common_list->next = tmp;
 502       tail_common_list = tmp;
 503     }
 504 }
 505 #endif
 506
 507 /* The following function simply enters a given common entry onto
 508    the "current_common" block that has been saved away.  */
 509
 510 #if 0
 511 static void
 512 add_common_entry (struct symbol *entry_sym_ptr)
 513 {
 514   COMMON_ENTRY_PTR tmp;
 515
 516
 517
 518   /* The order of this list is important, since
 519      we expect the entries to appear in decl.
 520      order when we later issue "info common" calls.  */
 521
 522   tmp = allocate_common_entry_node ();
 523
 524   tmp->next = NULL;
 525   tmp->symbol = entry_sym_ptr;
 526
 527   if (current_common == NULL)
 528     error (_("Attempt to add COMMON entry with no block open!"));
 529   else
 530     {
 531       if (current_common->entries == NULL)
 532         {
 533           current_common->entries = tmp;
 534           current_common->end_of_entries = tmp;
 535         }
 536       else
 537         {
 538           current_common->end_of_entries->next = tmp;
 539           current_common->end_of_entries = tmp;
 540         }
 541     }
 542 }
 543 #endif
 544
 545 /* This routine finds the first encountred COMMON block named "name".  */
 546
 547 #if 0
 548 static SAVED_F77_COMMON_PTR
 549 find_first_common_named (char *name)
 550 {
 551
 552   SAVED_F77_COMMON_PTR tmp;
 553
 554   tmp = head_common_list;
 555
 556   while (tmp != NULL)
 557     {
 558       if (strcmp (tmp->name, name) == 0)
 559         return (tmp);
 560       else
 561         tmp = tmp->next;
 562     }
 563   return (NULL);
 564 }
 565 #endif
 566
 567 /* This routine finds the first encountred COMMON block named "name"
 568    that belongs to function funcname.  */
 569
 570 SAVED_F77_COMMON_PTR
 571 find_common_for_function (const char *name, const char *funcname)
 572 {
 573
 574   SAVED_F77_COMMON_PTR tmp;
 575
 576   tmp = head_common_list;
 577
 578   while (tmp != NULL)
 579     {
 580       if (strcmp (tmp->name, name) == 0
 581           && strcmp (tmp->owning_function, funcname) == 0)
 582         return (tmp);
 583       else
 584         tmp = tmp->next;
 585     }
 586   return (NULL);
 587 }
 588
 589
 590 #if 0
 591
 592 /* The following function is called to patch up the offsets
 593    for the statics contained in the COMMON block named
 594    "name."  */
 595
 596 static void
 597 patch_common_entries (SAVED_F77_COMMON_PTR blk, CORE_ADDR offset, int secnum)
 598 {
 599   COMMON_ENTRY_PTR entry;
 600
 601   blk->offset = offset;         /* Keep this around for future use.  */
 602
 603   entry = blk->entries;
 604
 605   while (entry != NULL)
 606     {
 607       SYMBOL_VALUE (entry->symbol) += offset;
 608       SYMBOL_SECTION (entry->symbol) = secnum;
 609
 610       entry = entry->next;
 611     }
 612   blk->secnum = secnum;
 613 }
 614
 615 /* Patch all commons named "name" that need patching.Since COMMON
 616    blocks occur with relative infrequency, we simply do a linear scan on
 617    the name.  Eventually, the best way to do this will be a
 618    hashed-lookup.  Secnum is the section number for the .bss section
 619    (which is where common data lives).  */
 620
 621 static void
 622 patch_all_commons_by_name (char *name, CORE_ADDR offset, int secnum)
 623 {
 624
 625   SAVED_F77_COMMON_PTR tmp;
 626
 627   /* For blank common blocks, change the canonical reprsentation
 628      of a blank name */
 629
 630   if (strcmp (name, BLANK_COMMON_NAME_ORIGINAL) == 0
 631       || strcmp (name, BLANK_COMMON_NAME_MF77) == 0)
 632     {
 633       xfree (name);
 634       name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
 635       strcpy (name, BLANK_COMMON_NAME_LOCAL);
 636     }
 637
 638   tmp = head_common_list;
 639
 640   while (tmp != NULL)
 641     {
 642       if (COMMON_NEEDS_PATCHING (tmp))
 643         if (strcmp (tmp->name, name) == 0)
 644           patch_common_entries (tmp, offset, secnum);
 645
 646       tmp = tmp->next;
 647     }
 648 }
 649 #endif
 650
 651 /* This macro adds the symbol-number for the start of the function
 652    (the symbol number of the .bf) referenced by symnum_fcn to a
 653    list.  This list, in reality should be a FIFO queue but since
 654    #line pragmas sometimes cause line ranges to get messed up
 655    we simply create a linear list.  This list can then be searched
 656    first by a queueing algorithm and upon failure fall back to
 657    a linear scan.  */
 658
 659 #if 0
 660 #define ADD_BF_SYMNUM(bf_sym,fcn_sym) \
 661   \
 662   if (saved_bf_list == NULL) \
 663 { \
 664     tmp_bf_ptr = allocate_saved_bf_node(); \
 665       \
 666         tmp_bf_ptr->symnum_bf = (bf_sym); \
 667           tmp_bf_ptr->symnum_fcn = (fcn_sym);  \
 668             tmp_bf_ptr->next = NULL; \
 669               \
 670                 current_head_bf_list = saved_bf_list = tmp_bf_ptr; \
 671                   saved_bf_list_end = tmp_bf_ptr; \
 672                   } \
 673 else \
 674 {  \
 675      tmp_bf_ptr = allocate_saved_bf_node(); \
 676        \
 677          tmp_bf_ptr->symnum_bf = (bf_sym);  \
 678            tmp_bf_ptr->symnum_fcn = (fcn_sym);  \
 679              tmp_bf_ptr->next = NULL;  \
 680                \
 681                  saved_bf_list_end->next = tmp_bf_ptr;  \
 682                    saved_bf_list_end = tmp_bf_ptr; \
 683                    }
 684 #endif
 685
 686 /* This function frees the entire (.bf,function) list.  */
 687
 688 #if 0
 689 static void
 690 clear_bf_list (void)
 691 {
 692
 693   SAVED_BF_PTR tmp = saved_bf_list;
 694   SAVED_BF_PTR next = NULL;
 695
 696   while (tmp != NULL)
 697     {
 698       next = tmp->next;
 699       xfree (tmp);
 700       tmp = next;
 701     }
 702   saved_bf_list = NULL;
 703 }
 704 #endif
 705
 706 int global_remote_debug;
 707
 708 #if 0
 709
 710 static long
 711 get_bf_for_fcn (long the_function)
 712 {
 713   SAVED_BF_PTR tmp;
 714   int nprobes = 0;
 715
 716   /* First use a simple queuing algorithm (i.e. look and see if the
 717      item at the head of the queue is the one you want).  */
 718
 719   if (saved_bf_list == NULL)
 720     internal_error (__FILE__, __LINE__,
 721                     _("cannot get .bf node off empty list"));
 722
 723   if (current_head_bf_list != NULL)
 724     if (current_head_bf_list->symnum_fcn == the_function)
 725       {
 726         if (global_remote_debug)
 727           fprintf_unfiltered (gdb_stderr, "*");
 728
 729         tmp = current_head_bf_list;
 730         current_head_bf_list = current_head_bf_list->next;
 731         return (tmp->symnum_bf);
 732       }
 733
 734   /* If the above did not work (probably because #line directives were
 735      used in the sourcefile and they messed up our internal tables) we now do
 736      the ugly linear scan.  */
 737
 738   if (global_remote_debug)
 739     fprintf_unfiltered (gdb_stderr, "\ndefaulting to linear scan\n");
 740
 741   nprobes = 0;
 742   tmp = saved_bf_list;
 743   while (tmp != NULL)
 744     {
 745       nprobes++;
 746       if (tmp->symnum_fcn == the_function)
 747         {
 748           if (global_remote_debug)
 749             fprintf_unfiltered (gdb_stderr, "Found in %d probes\n", nprobes);
 750           current_head_bf_list = tmp->next;
 751           return (tmp->symnum_bf);
 752         }
 753       tmp = tmp->next;
 754     }
 755
 756   return (-1);
 757 }
 758
 759 static SAVED_FUNCTION_PTR saved_function_list = NULL;
 760 static SAVED_FUNCTION_PTR saved_function_list_end = NULL;
 761
 762 static void
 763 clear_function_list (void)
 764 {
 765   SAVED_FUNCTION_PTR tmp = saved_function_list;
 766   SAVED_FUNCTION_PTR next = NULL;
 767
 768   while (tmp != NULL)
 769     {
 770       next = tmp->next;
 771       xfree (tmp);
 772       tmp = next;
 773     }
 774
 775   saved_function_list = NULL;
 776 }
 777 #endif