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
  37
  38 /* Following is dubious stuff that had been in the xcoff reader.  */
  39
  40 struct saved_fcn
  41   {
  42     long line_offset;           /* Line offset for function.  */
  43     struct saved_fcn *next;
  44   };
  45
  46
  47 struct saved_bf_symnum
  48   {
  49     long symnum_fcn;            /* Symnum of function (i.e. .function
  50                                    directive).  */
  51     long symnum_bf;             /* Symnum of .bf for this function.  */
  52     struct saved_bf_symnum *next;
  53   };
  54
  55 typedef struct saved_fcn SAVED_FUNCTION, *SAVED_FUNCTION_PTR;
  56 typedef struct saved_bf_symnum SAVED_BF, *SAVED_BF_PTR;
  57
  58 /* Local functions */
  59
  60 extern void _initialize_f_language (void);
  61 #if 0
  62 static void clear_function_list (void);
  63 static long get_bf_for_fcn (long);
  64 static void clear_bf_list (void);
  65 static void patch_all_commons_by_name (char *, CORE_ADDR, int);
  66 static SAVED_F77_COMMON_PTR find_first_common_named (char *);
  67 static void add_common_entry (struct symbol *);
  68 static void add_common_block (char *, CORE_ADDR, int, char *);
  69 static SAVED_FUNCTION *allocate_saved_function_node (void);
  70 static SAVED_BF_PTR allocate_saved_bf_node (void);
  71 static COMMON_ENTRY_PTR allocate_common_entry_node (void);
  72 static SAVED_F77_COMMON_PTR allocate_saved_f77_common_node (void);
  73 static void patch_common_entries (SAVED_F77_COMMON_PTR, CORE_ADDR, int);
  74 #endif
  75
  76 static void f_printchar (int c, struct type *type, struct ui_file * stream);
  77 static void f_emit_char (int c, struct type *type,
  78                          struct ui_file * stream, int quoter);
  79
  80 /* Return the encoding that should be used for the character type
  81    TYPE.  */
  82
  83 static const char *
  84 f_get_encoding (struct type *type)
  85 {
  86   const char *encoding;
  87
  88   switch (TYPE_LENGTH (type))
  89     {
  90     case 1:
  91       encoding = target_charset (get_type_arch (type));
  92       break;
  93     case 4:
  94       if (gdbarch_byte_order (get_type_arch (type)) == BFD_ENDIAN_BIG)
  95         encoding = "UTF-32BE";
  96       else
  97         encoding = "UTF-32LE";
  98       break;
  99
 100     default:
 101       error (_("unrecognized character type"));
 102     }
 103
 104   return encoding;
 105 }
 106
 107 /* Print the character C on STREAM as part of the contents of a literal
 108    string whose delimiter is QUOTER.  Note that that format for printing
 109    characters and strings is language specific.
 110    FIXME:  This is a copy of the same function from c-exp.y.  It should
 111    be replaced with a true F77 version.  */
 112
 113 static void
 114 f_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
 115 {
 116   const char *encoding = f_get_encoding (type);
 117
 118   generic_emit_char (c, type, stream, quoter, encoding);
 119 }
 120
 121 /* Implementation of la_printchar.  */
 122
 123 static void
 124 f_printchar (int c, struct type *type, struct ui_file *stream)
 125 {
 126   fputs_filtered ("'", stream);
 127   LA_EMIT_CHAR (c, type, stream, '\'');
 128   fputs_filtered ("'", stream);
 129 }
 130
 131 /* Print the character string STRING, printing at most LENGTH characters.
 132    Printing stops early if the number hits print_max; repeat counts
 133    are printed as appropriate.  Print ellipses at the end if we
 134    had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
 135    FIXME:  This is a copy of the same function from c-exp.y.  It should
 136    be replaced with a true F77 version.  */
 137
 138 static void
 139 f_printstr (struct ui_file *stream, struct type *type, const gdb_byte *string,
 140             unsigned int length, const char *encoding, int force_ellipses,
 141             const struct value_print_options *options)
 142 {
 143   const char *type_encoding = f_get_encoding (type);
 144
 145   if (TYPE_LENGTH (type) == 4)
 146     fputs_filtered ("4_", stream);
 147
 148   if (!encoding || !*encoding)
 149     encoding = type_encoding;
 150
 151   generic_printstr (stream, type, string, length, encoding,
 152                     force_ellipses, '\'', 0, options);
 153 }
 154 \f
 155
 156 /* Table of operators and their precedences for printing expressions.  */
 157
 158 static const struct op_print f_op_print_tab[] =
 159 {
 160   {"+", BINOP_ADD, PREC_ADD, 0},
 161   {"+", UNOP_PLUS, PREC_PREFIX, 0},
 162   {"-", BINOP_SUB, PREC_ADD, 0},
 163   {"-", UNOP_NEG, PREC_PREFIX, 0},
 164   {"*", BINOP_MUL, PREC_MUL, 0},
 165   {"/", BINOP_DIV, PREC_MUL, 0},
 166   {"DIV", BINOP_INTDIV, PREC_MUL, 0},
 167   {"MOD", BINOP_REM, PREC_MUL, 0},
 168   {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
 169   {".OR.", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
 170   {".AND.", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
 171   {".NOT.", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
 172   {".EQ.", BINOP_EQUAL, PREC_EQUAL, 0},
 173   {".NE.", BINOP_NOTEQUAL, PREC_EQUAL, 0},
 174   {".LE.", BINOP_LEQ, PREC_ORDER, 0},
 175   {".GE.", BINOP_GEQ, PREC_ORDER, 0},
 176   {".GT.", BINOP_GTR, PREC_ORDER, 0},
 177   {".LT.", BINOP_LESS, PREC_ORDER, 0},
 178   {"**", UNOP_IND, PREC_PREFIX, 0},
 179   {"@", BINOP_REPEAT, PREC_REPEAT, 0},
 180   {NULL, 0, 0, 0}
 181 };
 182 \f
 183 enum f_primitive_types {
 184   f_primitive_type_character,
 185   f_primitive_type_logical,
 186   f_primitive_type_logical_s1,
 187   f_primitive_type_logical_s2,
 188   f_primitive_type_logical_s8,
 189   f_primitive_type_integer,
 190   f_primitive_type_integer_s2,
 191   f_primitive_type_real,
 192   f_primitive_type_real_s8,
 193   f_primitive_type_real_s16,
 194   f_primitive_type_complex_s8,
 195   f_primitive_type_complex_s16,
 196   f_primitive_type_void,
 197   nr_f_primitive_types
 198 };
 199
 200 static void
 201 f_language_arch_info (struct gdbarch *gdbarch,
 202                       struct language_arch_info *lai)
 203 {
 204   const struct builtin_f_type *builtin = builtin_f_type (gdbarch);
 205
 206   lai->string_char_type = builtin->builtin_character;
 207   lai->primitive_type_vector
 208     = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_f_primitive_types + 1,
 209                               struct type *);
 210
 211   lai->primitive_type_vector [f_primitive_type_character]
 212     = builtin->builtin_character;
 213   lai->primitive_type_vector [f_primitive_type_logical]
 214     = builtin->builtin_logical;
 215   lai->primitive_type_vector [f_primitive_type_logical_s1]
 216     = builtin->builtin_logical_s1;
 217   lai->primitive_type_vector [f_primitive_type_logical_s2]
 218     = builtin->builtin_logical_s2;
 219   lai->primitive_type_vector [f_primitive_type_logical_s8]
 220     = builtin->builtin_logical_s8;
 221   lai->primitive_type_vector [f_primitive_type_real]
 222     = builtin->builtin_real;
 223   lai->primitive_type_vector [f_primitive_type_real_s8]
 224     = builtin->builtin_real_s8;
 225   lai->primitive_type_vector [f_primitive_type_real_s16]
 226     = builtin->builtin_real_s16;
 227   lai->primitive_type_vector [f_primitive_type_complex_s8]
 228     = builtin->builtin_complex_s8;
 229   lai->primitive_type_vector [f_primitive_type_complex_s16]
 230     = builtin->builtin_complex_s16;
 231   lai->primitive_type_vector [f_primitive_type_void]
 232     = builtin->builtin_void;
 233
 234   lai->bool_type_symbol = "logical";
 235   lai->bool_type_default = builtin->builtin_logical_s2;
 236 }
 237
 238 /* Remove the modules separator :: from the default break list.  */
 239
 240 static char *
 241 f_word_break_characters (void)
 242 {
 243   static char *retval;
 244
 245   if (!retval)
 246     {
 247       char *s;
 248
 249       retval = xstrdup (default_word_break_characters ());
 250       s = strchr (retval, ':');
 251       if (s)
 252         {
 253           char *last_char = &s[strlen (s) - 1];
 254
 255           *s = *last_char;
 256           *last_char = 0;
 257         }
 258     }
 259   return retval;
 260 }
 261
 262 /* Consider the modules separator :: as a valid symbol name character
 263    class.  */
 264
 265 static char **
 266 f_make_symbol_completion_list (char *text, char *word)
 267 {
 268   return default_make_symbol_completion_list_break_on (text, word, ":");
 269 }
 270
 271 /* This is declared in c-lang.h but it is silly to import that file for what
 272    is already just a hack.  */
 273 extern int c_value_print (struct value *, struct ui_file *,
 274                           const struct value_print_options *);
 275
 276 const struct language_defn f_language_defn =
 277 {
 278   "fortran",
 279   language_fortran,
 280   range_check_on,
 281   type_check_on,
 282   case_sensitive_off,
 283   array_column_major,
 284   macro_expansion_no,
 285   &exp_descriptor_standard,
 286   f_parse,                      /* parser */
 287   f_error,                      /* parser error function */
 288   null_post_parser,
 289   f_printchar,                  /* Print character constant */
 290   f_printstr,                   /* function to print string constant */
 291   f_emit_char,                  /* Function to print a single character */
 292   f_print_type,                 /* Print a type using appropriate syntax */
 293   default_print_typedef,        /* Print a typedef using appropriate syntax */
 294   f_val_print,                  /* Print a value using appropriate syntax */
 295   c_value_print,                /* FIXME */
 296   NULL,                         /* Language specific skip_trampoline */
 297   NULL,                         /* name_of_this */
 298   cp_lookup_symbol_nonlocal,    /* lookup_symbol_nonlocal */
 299   basic_lookup_transparent_type,/* lookup_transparent_type */
 300   NULL,                         /* Language specific symbol demangler */
 301   NULL,                         /* Language specific
 302                                    class_name_from_physname */
 303   f_op_print_tab,               /* expression operators for printing */
 304   0,                            /* arrays are first-class (not c-style) */
 305   1,                            /* String lower bound */
 306   f_word_break_characters,
 307   f_make_symbol_completion_list,
 308   f_language_arch_info,
 309   default_print_array_index,
 310   default_pass_by_reference,
 311   default_get_string,
 312   strcmp_iw_ordered,
 313   iterate_over_symbols,
 314   LANG_MAGIC
 315 };
 316
 317 static void *
 318 build_fortran_types (struct gdbarch *gdbarch)
 319 {
 320   struct builtin_f_type *builtin_f_type
 321     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_f_type);
 322
 323   builtin_f_type->builtin_void
 324     = arch_type (gdbarch, TYPE_CODE_VOID, 1, "VOID");
 325
 326   builtin_f_type->builtin_character
 327     = arch_integer_type (gdbarch, TARGET_CHAR_BIT, 0, "character");
 328
 329   builtin_f_type->builtin_logical_s1
 330     = arch_boolean_type (gdbarch, TARGET_CHAR_BIT, 1, "logical*1");
 331
 332   builtin_f_type->builtin_integer_s2
 333     = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), 0,
 334                          "integer*2");
 335
 336   builtin_f_type->builtin_logical_s2
 337     = arch_boolean_type (gdbarch, gdbarch_short_bit (gdbarch), 1,
 338                          "logical*2");
 339
 340   builtin_f_type->builtin_logical_s8
 341     = arch_boolean_type (gdbarch, gdbarch_long_long_bit (gdbarch), 1,
 342                          "logical*8");
 343
 344   builtin_f_type->builtin_integer
 345     = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 0,
 346                          "integer");
 347
 348   builtin_f_type->builtin_logical
 349     = arch_boolean_type (gdbarch, gdbarch_int_bit (gdbarch), 1,
 350                          "logical*4");
 351
 352   builtin_f_type->builtin_real
 353     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 354                        "real", NULL);
 355   builtin_f_type->builtin_real_s8
 356     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 357                        "real*8", NULL);
 358   builtin_f_type->builtin_real_s16
 359     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 360                        "real*16", NULL);
 361
 362   builtin_f_type->builtin_complex_s8
 363     = arch_complex_type (gdbarch, "complex*8",
 364                          builtin_f_type->builtin_real);
 365   builtin_f_type->builtin_complex_s16
 366     = arch_complex_type (gdbarch, "complex*16",
 367                          builtin_f_type->builtin_real_s8);
 368   builtin_f_type->builtin_complex_s32
 369     = arch_complex_type (gdbarch, "complex*32",
 370                          builtin_f_type->builtin_real_s16);
 371
 372   return builtin_f_type;
 373 }
 374
 375 static struct gdbarch_data *f_type_data;
 376
 377 const struct builtin_f_type *
 378 builtin_f_type (struct gdbarch *gdbarch)
 379 {
 380   return gdbarch_data (gdbarch, f_type_data);
 381 }
 382
 383 void
 384 _initialize_f_language (void)
 385 {
 386   f_type_data = gdbarch_data_register_post_init (build_fortran_types);
 387
 388   add_language (&f_language_defn);
 389 }
 390
 391 #if 0
 392 static SAVED_BF_PTR
 393 allocate_saved_bf_node (void)
 394 {
 395   SAVED_BF_PTR new;
 396
 397   new = (SAVED_BF_PTR) xmalloc (sizeof (SAVED_BF));
 398   return (new);
 399 }
 400
 401 static SAVED_FUNCTION *
 402 allocate_saved_function_node (void)
 403 {
 404   SAVED_FUNCTION *new;
 405
 406   new = (SAVED_FUNCTION *) xmalloc (sizeof (SAVED_FUNCTION));
 407   return (new);
 408 }
 409
 410 static SAVED_F77_COMMON_PTR
 411 allocate_saved_f77_common_node (void)
 412 {
 413   SAVED_F77_COMMON_PTR new;
 414
 415   new = (SAVED_F77_COMMON_PTR) xmalloc (sizeof (SAVED_F77_COMMON));
 416   return (new);
 417 }
 418
 419 static COMMON_ENTRY_PTR
 420 allocate_common_entry_node (void)
 421 {
 422   COMMON_ENTRY_PTR new;
 423
 424   new = (COMMON_ENTRY_PTR) xmalloc (sizeof (COMMON_ENTRY));
 425   return (new);
 426 }
 427 #endif
 428
 429 SAVED_F77_COMMON_PTR head_common_list = NULL;   /* Ptr to 1st saved COMMON  */
 430 SAVED_F77_COMMON_PTR tail_common_list = NULL;   /* Ptr to last saved COMMON  */
 431 SAVED_F77_COMMON_PTR current_common = NULL;     /* Ptr to current COMMON */
 432
 433 #if 0
 434 static SAVED_BF_PTR saved_bf_list = NULL;       /* Ptr to (.bf,function)
 435                                                    list */
 436 static SAVED_BF_PTR saved_bf_list_end = NULL;   /* Ptr to above list's end */
 437 static SAVED_BF_PTR current_head_bf_list = NULL;    /* Current head of
 438                                                        above list.  */
 439
 440 static SAVED_BF_PTR tmp_bf_ptr; /* Generic temporary for use
 441                                    in macros.  */
 442
 443 /* The following function simply enters a given common block onto
 444    the global common block chain.  */
 445
 446 static void
 447 add_common_block (char *name, CORE_ADDR offset, int secnum, char *func_stab)
 448 {
 449   SAVED_F77_COMMON_PTR tmp;
 450   char *c, *local_copy_func_stab;
 451
 452   /* If the COMMON block we are trying to add has a blank
 453      name (i.e. "#BLNK_COM") then we set it to __BLANK
 454      because the darn "#" character makes GDB's input
 455      parser have fits.  */
 456
 457
 458   if (strcmp (name, BLANK_COMMON_NAME_ORIGINAL) == 0
 459       || strcmp (name, BLANK_COMMON_NAME_MF77) == 0)
 460     {
 461
 462       xfree (name);
 463       name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
 464       strcpy (name, BLANK_COMMON_NAME_LOCAL);
 465     }
 466
 467   tmp = allocate_saved_f77_common_node ();
 468
 469   local_copy_func_stab = xmalloc (strlen (func_stab) + 1);
 470   strcpy (local_copy_func_stab, func_stab);
 471
 472   tmp->name = xmalloc (strlen (name) + 1);
 473
 474   /* local_copy_func_stab is a stabstring, let us first extract the
 475      function name from the stab by NULLing out the ':' character.  */
 476
 477
 478   c = NULL;
 479   c = strchr (local_copy_func_stab, ':');
 480
 481   if (c)
 482     *c = '\0';
 483   else
 484     error (_("Malformed function STAB found in add_common_block()"));
 485
 486
 487   tmp->owning_function = xmalloc (strlen (local_copy_func_stab) + 1);
 488
 489   strcpy (tmp->owning_function, local_copy_func_stab);
 490
 491   strcpy (tmp->name, name);
 492   tmp->offset = offset;
 493   tmp->next = NULL;
 494   tmp->entries = NULL;
 495   tmp->secnum = secnum;
 496
 497   current_common = tmp;
 498
 499   if (head_common_list == NULL)
 500     {
 501       head_common_list = tail_common_list = tmp;
 502     }
 503   else
 504     {
 505       tail_common_list->next = tmp;
 506       tail_common_list = tmp;
 507     }
 508 }
 509 #endif
 510
 511 /* The following function simply enters a given common entry onto
 512    the "current_common" block that has been saved away.  */
 513
 514 #if 0
 515 static void
 516 add_common_entry (struct symbol *entry_sym_ptr)
 517 {
 518   COMMON_ENTRY_PTR tmp;
 519
 520
 521
 522   /* The order of this list is important, since
 523      we expect the entries to appear in decl.
 524      order when we later issue "info common" calls.  */
 525
 526   tmp = allocate_common_entry_node ();
 527
 528   tmp->next = NULL;
 529   tmp->symbol = entry_sym_ptr;
 530
 531   if (current_common == NULL)
 532     error (_("Attempt to add COMMON entry with no block open!"));
 533   else
 534     {
 535       if (current_common->entries == NULL)
 536         {
 537           current_common->entries = tmp;
 538           current_common->end_of_entries = tmp;
 539         }
 540       else
 541         {
 542           current_common->end_of_entries->next = tmp;
 543           current_common->end_of_entries = tmp;
 544         }
 545     }
 546 }
 547 #endif
 548
 549 /* This routine finds the first encountred COMMON block named "name".  */
 550
 551 #if 0
 552 static SAVED_F77_COMMON_PTR
 553 find_first_common_named (char *name)
 554 {
 555
 556   SAVED_F77_COMMON_PTR tmp;
 557
 558   tmp = head_common_list;
 559
 560   while (tmp != NULL)
 561     {
 562       if (strcmp (tmp->name, name) == 0)
 563         return (tmp);
 564       else
 565         tmp = tmp->next;
 566     }
 567   return (NULL);
 568 }
 569 #endif
 570
 571 /* This routine finds the first encountred COMMON block named "name"
 572    that belongs to function funcname.  */
 573
 574 SAVED_F77_COMMON_PTR
 575 find_common_for_function (char *name, char *funcname)
 576 {
 577
 578   SAVED_F77_COMMON_PTR tmp;
 579
 580   tmp = head_common_list;
 581
 582   while (tmp != NULL)
 583     {
 584       if (strcmp (tmp->name, name) == 0
 585           && strcmp (tmp->owning_function, funcname) == 0)
 586         return (tmp);
 587       else
 588         tmp = tmp->next;
 589     }
 590   return (NULL);
 591 }
 592
 593
 594 #if 0
 595
 596 /* The following function is called to patch up the offsets
 597    for the statics contained in the COMMON block named
 598    "name."  */
 599
 600 static void
 601 patch_common_entries (SAVED_F77_COMMON_PTR blk, CORE_ADDR offset, int secnum)
 602 {
 603   COMMON_ENTRY_PTR entry;
 604
 605   blk->offset = offset;         /* Keep this around for future use.  */
 606
 607   entry = blk->entries;
 608
 609   while (entry != NULL)
 610     {
 611       SYMBOL_VALUE (entry->symbol) += offset;
 612       SYMBOL_SECTION (entry->symbol) = secnum;
 613
 614       entry = entry->next;
 615     }
 616   blk->secnum = secnum;
 617 }
 618
 619 /* Patch all commons named "name" that need patching.Since COMMON
 620    blocks occur with relative infrequency, we simply do a linear scan on
 621    the name.  Eventually, the best way to do this will be a
 622    hashed-lookup.  Secnum is the section number for the .bss section
 623    (which is where common data lives).  */
 624
 625 static void
 626 patch_all_commons_by_name (char *name, CORE_ADDR offset, int secnum)
 627 {
 628
 629   SAVED_F77_COMMON_PTR tmp;
 630
 631   /* For blank common blocks, change the canonical reprsentation
 632      of a blank name */
 633
 634   if (strcmp (name, BLANK_COMMON_NAME_ORIGINAL) == 0
 635       || strcmp (name, BLANK_COMMON_NAME_MF77) == 0)
 636     {
 637       xfree (name);
 638       name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
 639       strcpy (name, BLANK_COMMON_NAME_LOCAL);
 640     }
 641
 642   tmp = head_common_list;
 643
 644   while (tmp != NULL)
 645     {
 646       if (COMMON_NEEDS_PATCHING (tmp))
 647         if (strcmp (tmp->name, name) == 0)
 648           patch_common_entries (tmp, offset, secnum);
 649
 650       tmp = tmp->next;
 651     }
 652 }
 653 #endif
 654
 655 /* This macro adds the symbol-number for the start of the function
 656    (the symbol number of the .bf) referenced by symnum_fcn to a
 657    list.  This list, in reality should be a FIFO queue but since
 658    #line pragmas sometimes cause line ranges to get messed up
 659    we simply create a linear list.  This list can then be searched
 660    first by a queueing algorithm and upon failure fall back to
 661    a linear scan.  */
 662
 663 #if 0
 664 #define ADD_BF_SYMNUM(bf_sym,fcn_sym) \
 665   \
 666   if (saved_bf_list == NULL) \
 667 { \
 668     tmp_bf_ptr = allocate_saved_bf_node(); \
 669       \
 670         tmp_bf_ptr->symnum_bf = (bf_sym); \
 671           tmp_bf_ptr->symnum_fcn = (fcn_sym);  \
 672             tmp_bf_ptr->next = NULL; \
 673               \
 674                 current_head_bf_list = saved_bf_list = tmp_bf_ptr; \
 675                   saved_bf_list_end = tmp_bf_ptr; \
 676                   } \
 677 else \
 678 {  \
 679      tmp_bf_ptr = allocate_saved_bf_node(); \
 680        \
 681          tmp_bf_ptr->symnum_bf = (bf_sym);  \
 682            tmp_bf_ptr->symnum_fcn = (fcn_sym);  \
 683              tmp_bf_ptr->next = NULL;  \
 684                \
 685                  saved_bf_list_end->next = tmp_bf_ptr;  \
 686                    saved_bf_list_end = tmp_bf_ptr; \
 687                    }
 688 #endif
 689
 690 /* This function frees the entire (.bf,function) list.  */
 691
 692 #if 0
 693 static void
 694 clear_bf_list (void)
 695 {
 696
 697   SAVED_BF_PTR tmp = saved_bf_list;
 698   SAVED_BF_PTR next = NULL;
 699
 700   while (tmp != NULL)
 701     {
 702       next = tmp->next;
 703       xfree (tmp);
 704       tmp = next;
 705     }
 706   saved_bf_list = NULL;
 707 }
 708 #endif
 709
 710 int global_remote_debug;
 711
 712 #if 0
 713
 714 static long
 715 get_bf_for_fcn (long the_function)
 716 {
 717   SAVED_BF_PTR tmp;
 718   int nprobes = 0;
 719
 720   /* First use a simple queuing algorithm (i.e. look and see if the
 721      item at the head of the queue is the one you want).  */
 722
 723   if (saved_bf_list == NULL)
 724     internal_error (__FILE__, __LINE__,
 725                     _("cannot get .bf node off empty list"));
 726
 727   if (current_head_bf_list != NULL)
 728     if (current_head_bf_list->symnum_fcn == the_function)
 729       {
 730         if (global_remote_debug)
 731           fprintf_unfiltered (gdb_stderr, "*");
 732
 733         tmp = current_head_bf_list;
 734         current_head_bf_list = current_head_bf_list->next;
 735         return (tmp->symnum_bf);
 736       }
 737
 738   /* If the above did not work (probably because #line directives were
 739      used in the sourcefile and they messed up our internal tables) we now do
 740      the ugly linear scan.  */
 741
 742   if (global_remote_debug)
 743     fprintf_unfiltered (gdb_stderr, "\ndefaulting to linear scan\n");
 744
 745   nprobes = 0;
 746   tmp = saved_bf_list;
 747   while (tmp != NULL)
 748     {
 749       nprobes++;
 750       if (tmp->symnum_fcn == the_function)
 751         {
 752           if (global_remote_debug)
 753             fprintf_unfiltered (gdb_stderr, "Found in %d probes\n", nprobes);
 754           current_head_bf_list = tmp->next;
 755           return (tmp->symnum_bf);
 756         }
 757       tmp = tmp->next;
 758     }
 759
 760   return (-1);
 761 }
 762
 763 static SAVED_FUNCTION_PTR saved_function_list = NULL;
 764 static SAVED_FUNCTION_PTR saved_function_list_end = NULL;
 765
 766 static void
 767 clear_function_list (void)
 768 {
 769   SAVED_FUNCTION_PTR tmp = saved_function_list;
 770   SAVED_FUNCTION_PTR next = NULL;
 771
 772   while (tmp != NULL)
 773     {
 774       next = tmp->next;
 775       xfree (tmp);
 776       tmp = next;
 777     }
 778
 779   saved_function_list = NULL;
 780 }
 781 #endif