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   type_check_on,
 278   case_sensitive_off,
 279   array_column_major,
 280   macro_expansion_no,
 281   &exp_descriptor_standard,
 282   f_parse,                      /* parser */
 283   f_error,                      /* parser error function */
 284   null_post_parser,
 285   f_printchar,                  /* Print character constant */
 286   f_printstr,                   /* function to print string constant */
 287   f_emit_char,                  /* Function to print a single character */
 288   f_print_type,                 /* Print a type using appropriate syntax */
 289   default_print_typedef,        /* Print a typedef using appropriate syntax */
 290   f_val_print,                  /* Print a value using appropriate syntax */
 291   c_value_print,                /* FIXME */
 292   default_read_var_value,       /* la_read_var_value */
 293   NULL,                         /* Language specific skip_trampoline */
 294   NULL,                         /* name_of_this */
 295   cp_lookup_symbol_nonlocal,    /* lookup_symbol_nonlocal */
 296   basic_lookup_transparent_type,/* lookup_transparent_type */
 297   NULL,                         /* Language specific symbol demangler */
 298   NULL,                         /* Language specific
 299                                    class_name_from_physname */
 300   f_op_print_tab,               /* expression operators for printing */
 301   0,                            /* arrays are first-class (not c-style) */
 302   1,                            /* String lower bound */
 303   f_word_break_characters,
 304   f_make_symbol_completion_list,
 305   f_language_arch_info,
 306   default_print_array_index,
 307   default_pass_by_reference,
 308   default_get_string,
 309   NULL,                         /* la_get_symbol_name_cmp */
 310   iterate_over_symbols,
 311   LANG_MAGIC
 312 };
 313
 314 static void *
 315 build_fortran_types (struct gdbarch *gdbarch)
 316 {
 317   struct builtin_f_type *builtin_f_type
 318     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_f_type);
 319
 320   builtin_f_type->builtin_void
 321     = arch_type (gdbarch, TYPE_CODE_VOID, 1, "VOID");
 322
 323   builtin_f_type->builtin_character
 324     = arch_integer_type (gdbarch, TARGET_CHAR_BIT, 0, "character");
 325
 326   builtin_f_type->builtin_logical_s1
 327     = arch_boolean_type (gdbarch, TARGET_CHAR_BIT, 1, "logical*1");
 328
 329   builtin_f_type->builtin_integer_s2
 330     = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), 0,
 331                          "integer*2");
 332
 333   builtin_f_type->builtin_logical_s2
 334     = arch_boolean_type (gdbarch, gdbarch_short_bit (gdbarch), 1,
 335                          "logical*2");
 336
 337   builtin_f_type->builtin_logical_s8
 338     = arch_boolean_type (gdbarch, gdbarch_long_long_bit (gdbarch), 1,
 339                          "logical*8");
 340
 341   builtin_f_type->builtin_integer
 342     = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 0,
 343                          "integer");
 344
 345   builtin_f_type->builtin_logical
 346     = arch_boolean_type (gdbarch, gdbarch_int_bit (gdbarch), 1,
 347                          "logical*4");
 348
 349   builtin_f_type->builtin_real
 350     = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
 351                        "real", NULL);
 352   builtin_f_type->builtin_real_s8
 353     = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
 354                        "real*8", NULL);
 355   builtin_f_type->builtin_real_s16
 356     = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
 357                        "real*16", NULL);
 358
 359   builtin_f_type->builtin_complex_s8
 360     = arch_complex_type (gdbarch, "complex*8",
 361                          builtin_f_type->builtin_real);
 362   builtin_f_type->builtin_complex_s16
 363     = arch_complex_type (gdbarch, "complex*16",
 364                          builtin_f_type->builtin_real_s8);
 365   builtin_f_type->builtin_complex_s32
 366     = arch_complex_type (gdbarch, "complex*32",
 367                          builtin_f_type->builtin_real_s16);
 368
 369   return builtin_f_type;
 370 }
 371
 372 static struct gdbarch_data *f_type_data;
 373
 374 const struct builtin_f_type *
 375 builtin_f_type (struct gdbarch *gdbarch)
 376 {
 377   return gdbarch_data (gdbarch, f_type_data);
 378 }
 379
 380 void
 381 _initialize_f_language (void)
 382 {
 383   f_type_data = gdbarch_data_register_post_init (build_fortran_types);
 384
 385   add_language (&f_language_defn);
 386 }
 387
 388 #if 0
 389 static SAVED_BF_PTR
 390 allocate_saved_bf_node (void)
 391 {
 392   SAVED_BF_PTR new;
 393
 394   new = (SAVED_BF_PTR) xmalloc (sizeof (SAVED_BF));
 395   return (new);
 396 }
 397
 398 static SAVED_FUNCTION *
 399 allocate_saved_function_node (void)
 400 {
 401   SAVED_FUNCTION *new;
 402
 403   new = (SAVED_FUNCTION *) xmalloc (sizeof (SAVED_FUNCTION));
 404   return (new);
 405 }
 406
 407 static SAVED_F77_COMMON_PTR
 408 allocate_saved_f77_common_node (void)
 409 {
 410   SAVED_F77_COMMON_PTR new;
 411
 412   new = (SAVED_F77_COMMON_PTR) xmalloc (sizeof (SAVED_F77_COMMON));
 413   return (new);
 414 }
 415
 416 static COMMON_ENTRY_PTR
 417 allocate_common_entry_node (void)
 418 {
 419   COMMON_ENTRY_PTR new;
 420
 421   new = (COMMON_ENTRY_PTR) xmalloc (sizeof (COMMON_ENTRY));
 422   return (new);
 423 }
 424 #endif
 425
 426 SAVED_F77_COMMON_PTR head_common_list = NULL;   /* Ptr to 1st saved COMMON  */
 427 SAVED_F77_COMMON_PTR tail_common_list = NULL;   /* Ptr to last saved COMMON  */
 428 SAVED_F77_COMMON_PTR current_common = NULL;     /* Ptr to current COMMON */
 429
 430 #if 0
 431 static SAVED_BF_PTR saved_bf_list = NULL;       /* Ptr to (.bf,function)
 432                                                    list */
 433 static SAVED_BF_PTR saved_bf_list_end = NULL;   /* Ptr to above list's end */
 434 static SAVED_BF_PTR current_head_bf_list = NULL;    /* Current head of
 435                                                        above list.  */
 436
 437 static SAVED_BF_PTR tmp_bf_ptr; /* Generic temporary for use
 438                                    in macros.  */
 439
 440 /* The following function simply enters a given common block onto
 441    the global common block chain.  */
 442
 443 static void
 444 add_common_block (char *name, CORE_ADDR offset, int secnum, char *func_stab)
 445 {
 446   SAVED_F77_COMMON_PTR tmp;
 447   char *c, *local_copy_func_stab;
 448
 449   /* If the COMMON block we are trying to add has a blank
 450      name (i.e. "#BLNK_COM") then we set it to __BLANK
 451      because the darn "#" character makes GDB's input
 452      parser have fits.  */
 453
 454
 455   if (strcmp (name, BLANK_COMMON_NAME_ORIGINAL) == 0
 456       || strcmp (name, BLANK_COMMON_NAME_MF77) == 0)
 457     {
 458
 459       xfree (name);
 460       name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
 461       strcpy (name, BLANK_COMMON_NAME_LOCAL);
 462     }
 463
 464   tmp = allocate_saved_f77_common_node ();
 465
 466   local_copy_func_stab = xmalloc (strlen (func_stab) + 1);
 467   strcpy (local_copy_func_stab, func_stab);
 468
 469   tmp->name = xmalloc (strlen (name) + 1);
 470
 471   /* local_copy_func_stab is a stabstring, let us first extract the
 472      function name from the stab by NULLing out the ':' character.  */
 473
 474
 475   c = NULL;
 476   c = strchr (local_copy_func_stab, ':');
 477
 478   if (c)
 479     *c = '\0';
 480   else
 481     error (_("Malformed function STAB found in add_common_block()"));
 482
 483
 484   tmp->owning_function = xmalloc (strlen (local_copy_func_stab) + 1);
 485
 486   strcpy (tmp->owning_function, local_copy_func_stab);
 487
 488   strcpy (tmp->name, name);
 489   tmp->offset = offset;
 490   tmp->next = NULL;
 491   tmp->entries = NULL;
 492   tmp->secnum = secnum;
 493
 494   current_common = tmp;
 495
 496   if (head_common_list == NULL)
 497     {
 498       head_common_list = tail_common_list = tmp;
 499     }
 500   else
 501     {
 502       tail_common_list->next = tmp;
 503       tail_common_list = tmp;
 504     }
 505 }
 506 #endif
 507
 508 /* The following function simply enters a given common entry onto
 509    the "current_common" block that has been saved away.  */
 510
 511 #if 0
 512 static void
 513 add_common_entry (struct symbol *entry_sym_ptr)
 514 {
 515   COMMON_ENTRY_PTR tmp;
 516
 517
 518
 519   /* The order of this list is important, since
 520      we expect the entries to appear in decl.
 521      order when we later issue "info common" calls.  */
 522
 523   tmp = allocate_common_entry_node ();
 524
 525   tmp->next = NULL;
 526   tmp->symbol = entry_sym_ptr;
 527
 528   if (current_common == NULL)
 529     error (_("Attempt to add COMMON entry with no block open!"));
 530   else
 531     {
 532       if (current_common->entries == NULL)
 533         {
 534           current_common->entries = tmp;
 535           current_common->end_of_entries = tmp;
 536         }
 537       else
 538         {
 539           current_common->end_of_entries->next = tmp;
 540           current_common->end_of_entries = tmp;
 541         }
 542     }
 543 }
 544 #endif
 545
 546 /* This routine finds the first encountred COMMON block named "name".  */
 547
 548 #if 0
 549 static SAVED_F77_COMMON_PTR
 550 find_first_common_named (char *name)
 551 {
 552
 553   SAVED_F77_COMMON_PTR tmp;
 554
 555   tmp = head_common_list;
 556
 557   while (tmp != NULL)
 558     {
 559       if (strcmp (tmp->name, name) == 0)
 560         return (tmp);
 561       else
 562         tmp = tmp->next;
 563     }
 564   return (NULL);
 565 }
 566 #endif
 567
 568 /* This routine finds the first encountred COMMON block named "name"
 569    that belongs to function funcname.  */
 570
 571 SAVED_F77_COMMON_PTR
 572 find_common_for_function (const char *name, const char *funcname)
 573 {
 574
 575   SAVED_F77_COMMON_PTR tmp;
 576
 577   tmp = head_common_list;
 578
 579   while (tmp != NULL)
 580     {
 581       if (strcmp (tmp->name, name) == 0
 582           && strcmp (tmp->owning_function, funcname) == 0)
 583         return (tmp);
 584       else
 585         tmp = tmp->next;
 586     }
 587   return (NULL);
 588 }
 589
 590
 591 #if 0
 592
 593 /* The following function is called to patch up the offsets
 594    for the statics contained in the COMMON block named
 595    "name."  */
 596
 597 static void
 598 patch_common_entries (SAVED_F77_COMMON_PTR blk, CORE_ADDR offset, int secnum)
 599 {
 600   COMMON_ENTRY_PTR entry;
 601
 602   blk->offset = offset;         /* Keep this around for future use.  */
 603
 604   entry = blk->entries;
 605
 606   while (entry != NULL)
 607     {
 608       SYMBOL_VALUE (entry->symbol) += offset;
 609       SYMBOL_SECTION (entry->symbol) = secnum;
 610
 611       entry = entry->next;
 612     }
 613   blk->secnum = secnum;
 614 }
 615
 616 /* Patch all commons named "name" that need patching.Since COMMON
 617    blocks occur with relative infrequency, we simply do a linear scan on
 618    the name.  Eventually, the best way to do this will be a
 619    hashed-lookup.  Secnum is the section number for the .bss section
 620    (which is where common data lives).  */
 621
 622 static void
 623 patch_all_commons_by_name (char *name, CORE_ADDR offset, int secnum)
 624 {
 625
 626   SAVED_F77_COMMON_PTR tmp;
 627
 628   /* For blank common blocks, change the canonical reprsentation
 629      of a blank name */
 630
 631   if (strcmp (name, BLANK_COMMON_NAME_ORIGINAL) == 0
 632       || strcmp (name, BLANK_COMMON_NAME_MF77) == 0)
 633     {
 634       xfree (name);
 635       name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
 636       strcpy (name, BLANK_COMMON_NAME_LOCAL);
 637     }
 638
 639   tmp = head_common_list;
 640
 641   while (tmp != NULL)
 642     {
 643       if (COMMON_NEEDS_PATCHING (tmp))
 644         if (strcmp (tmp->name, name) == 0)
 645           patch_common_entries (tmp, offset, secnum);
 646
 647       tmp = tmp->next;
 648     }
 649 }
 650 #endif
 651
 652 /* This macro adds the symbol-number for the start of the function
 653    (the symbol number of the .bf) referenced by symnum_fcn to a
 654    list.  This list, in reality should be a FIFO queue but since
 655    #line pragmas sometimes cause line ranges to get messed up
 656    we simply create a linear list.  This list can then be searched
 657    first by a queueing algorithm and upon failure fall back to
 658    a linear scan.  */
 659
 660 #if 0
 661 #define ADD_BF_SYMNUM(bf_sym,fcn_sym) \
 662   \
 663   if (saved_bf_list == NULL) \
 664 { \
 665     tmp_bf_ptr = allocate_saved_bf_node(); \
 666       \
 667         tmp_bf_ptr->symnum_bf = (bf_sym); \
 668           tmp_bf_ptr->symnum_fcn = (fcn_sym);  \
 669             tmp_bf_ptr->next = NULL; \
 670               \
 671                 current_head_bf_list = saved_bf_list = tmp_bf_ptr; \
 672                   saved_bf_list_end = tmp_bf_ptr; \
 673                   } \
 674 else \
 675 {  \
 676      tmp_bf_ptr = allocate_saved_bf_node(); \
 677        \
 678          tmp_bf_ptr->symnum_bf = (bf_sym);  \
 679            tmp_bf_ptr->symnum_fcn = (fcn_sym);  \
 680              tmp_bf_ptr->next = NULL;  \
 681                \
 682                  saved_bf_list_end->next = tmp_bf_ptr;  \
 683                    saved_bf_list_end = tmp_bf_ptr; \
 684                    }
 685 #endif
 686
 687 /* This function frees the entire (.bf,function) list.  */
 688
 689 #if 0
 690 static void
 691 clear_bf_list (void)
 692 {
 693
 694   SAVED_BF_PTR tmp = saved_bf_list;
 695   SAVED_BF_PTR next = NULL;
 696
 697   while (tmp != NULL)
 698     {
 699       next = tmp->next;
 700       xfree (tmp);
 701       tmp = next;
 702     }
 703   saved_bf_list = NULL;
 704 }
 705 #endif
 706
 707 int global_remote_debug;
 708
 709 #if 0
 710
 711 static long
 712 get_bf_for_fcn (long the_function)
 713 {
 714   SAVED_BF_PTR tmp;
 715   int nprobes = 0;
 716
 717   /* First use a simple queuing algorithm (i.e. look and see if the
 718      item at the head of the queue is the one you want).  */
 719
 720   if (saved_bf_list == NULL)
 721     internal_error (__FILE__, __LINE__,
 722                     _("cannot get .bf node off empty list"));
 723
 724   if (current_head_bf_list != NULL)
 725     if (current_head_bf_list->symnum_fcn == the_function)
 726       {
 727         if (global_remote_debug)
 728           fprintf_unfiltered (gdb_stderr, "*");
 729
 730         tmp = current_head_bf_list;
 731         current_head_bf_list = current_head_bf_list->next;
 732         return (tmp->symnum_bf);
 733       }
 734
 735   /* If the above did not work (probably because #line directives were
 736      used in the sourcefile and they messed up our internal tables) we now do
 737      the ugly linear scan.  */
 738
 739   if (global_remote_debug)
 740     fprintf_unfiltered (gdb_stderr, "\ndefaulting to linear scan\n");
 741
 742   nprobes = 0;
 743   tmp = saved_bf_list;
 744   while (tmp != NULL)
 745     {
 746       nprobes++;
 747       if (tmp->symnum_fcn == the_function)
 748         {
 749           if (global_remote_debug)
 750             fprintf_unfiltered (gdb_stderr, "Found in %d probes\n", nprobes);
 751           current_head_bf_list = tmp->next;
 752           return (tmp->symnum_bf);
 753         }
 754       tmp = tmp->next;
 755     }
 756
 757   return (-1);
 758 }
 759
 760 static SAVED_FUNCTION_PTR saved_function_list = NULL;
 761 static SAVED_FUNCTION_PTR saved_function_list_end = NULL;
 762
 763 static void
 764 clear_function_list (void)
 765 {
 766   SAVED_FUNCTION_PTR tmp = saved_function_list;
 767   SAVED_FUNCTION_PTR next = NULL;
 768
 769   while (tmp != NULL)
 770     {
 771       next = tmp->next;
 772       xfree (tmp);
 773       tmp = next;
 774     }
 775
 776   saved_function_list = NULL;
 777 }
 778 #endif