gdb/f-lang.c

   1 /* Fortran language support routines for GDB, the GNU debugger.
   2
   3    Copyright (C) 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003,
   4    2004, 2005, 2007 Free Software 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 2 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, write to the Free Software
  23    Foundation, Inc., 51 Franklin Street, Fifth Floor,
  24    Boston, MA 02110-1301, USA.  */
  25
  26 #include "defs.h"
  27 #include "gdb_string.h"
  28 #include "symtab.h"
  29 #include "gdbtypes.h"
  30 #include "expression.h"
  31 #include "parser-defs.h"
  32 #include "language.h"
  33 #include "f-lang.h"
  34 #include "valprint.h"
  35 #include "value.h"
  36
  37 /* The built-in types of F77.  FIXME: integer*4 is missing, plain
  38    logical is missing (builtin_type_logical is logical*4).  */
  39
  40 struct type *builtin_type_f_character;
  41 struct type *builtin_type_f_logical;
  42 struct type *builtin_type_f_logical_s1;
  43 struct type *builtin_type_f_logical_s2;
  44 struct type *builtin_type_f_integer;
  45 struct type *builtin_type_f_integer_s2;
  46 struct type *builtin_type_f_real;
  47 struct type *builtin_type_f_real_s8;
  48 struct type *builtin_type_f_real_s16;
  49 struct type *builtin_type_f_complex_s8;
  50 struct type *builtin_type_f_complex_s16;
  51 struct type *builtin_type_f_complex_s32;
  52 struct type *builtin_type_f_void;
  53
  54 /* Following is dubious stuff that had been in the xcoff reader. */
  55
  56 struct saved_fcn
  57   {
  58     long line_offset;           /* Line offset for function */
  59     struct saved_fcn *next;
  60   };
  61
  62
  63 struct saved_bf_symnum
  64   {
  65     long symnum_fcn;            /* Symnum of function (i.e. .function directive) */
  66     long symnum_bf;             /* Symnum of .bf for this function */
  67     struct saved_bf_symnum *next;
  68   };
  69
  70 typedef struct saved_fcn SAVED_FUNCTION, *SAVED_FUNCTION_PTR;
  71 typedef struct saved_bf_symnum SAVED_BF, *SAVED_BF_PTR;
  72
  73 /* Local functions */
  74
  75 extern void _initialize_f_language (void);
  76 #if 0
  77 static void clear_function_list (void);
  78 static long get_bf_for_fcn (long);
  79 static void clear_bf_list (void);
  80 static void patch_all_commons_by_name (char *, CORE_ADDR, int);
  81 static SAVED_F77_COMMON_PTR find_first_common_named (char *);
  82 static void add_common_entry (struct symbol *);
  83 static void add_common_block (char *, CORE_ADDR, int, char *);
  84 static SAVED_FUNCTION *allocate_saved_function_node (void);
  85 static SAVED_BF_PTR allocate_saved_bf_node (void);
  86 static COMMON_ENTRY_PTR allocate_common_entry_node (void);
  87 static SAVED_F77_COMMON_PTR allocate_saved_f77_common_node (void);
  88 static void patch_common_entries (SAVED_F77_COMMON_PTR, CORE_ADDR, int);
  89 #endif
  90
  91 static struct type *f_create_fundamental_type (struct objfile *, int);
  92 static void f_printchar (int c, struct ui_file * stream);
  93 static void f_emit_char (int c, struct ui_file * stream, int quoter);
  94
  95 /* Print the character C on STREAM as part of the contents of a literal
  96    string whose delimiter is QUOTER.  Note that that format for printing
  97    characters and strings is language specific.
  98    FIXME:  This is a copy of the same function from c-exp.y.  It should
  99    be replaced with a true F77 version.  */
 100
 101 static void
 102 f_emit_char (int c, struct ui_file *stream, int quoter)
 103 {
 104   c &= 0xFF;                    /* Avoid sign bit follies */
 105
 106   if (PRINT_LITERAL_FORM (c))
 107     {
 108       if (c == '\\' || c == quoter)
 109         fputs_filtered ("\\", stream);
 110       fprintf_filtered (stream, "%c", c);
 111     }
 112   else
 113     {
 114       switch (c)
 115         {
 116         case '\n':
 117           fputs_filtered ("\\n", stream);
 118           break;
 119         case '\b':
 120           fputs_filtered ("\\b", stream);
 121           break;
 122         case '\t':
 123           fputs_filtered ("\\t", stream);
 124           break;
 125         case '\f':
 126           fputs_filtered ("\\f", stream);
 127           break;
 128         case '\r':
 129           fputs_filtered ("\\r", stream);
 130           break;
 131         case '\033':
 132           fputs_filtered ("\\e", stream);
 133           break;
 134         case '\007':
 135           fputs_filtered ("\\a", stream);
 136           break;
 137         default:
 138           fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
 139           break;
 140         }
 141     }
 142 }
 143
 144 /* FIXME:  This is a copy of the same function from c-exp.y.  It should
 145    be replaced with a true F77version. */
 146
 147 static void
 148 f_printchar (int c, struct ui_file *stream)
 149 {
 150   fputs_filtered ("'", stream);
 151   LA_EMIT_CHAR (c, stream, '\'');
 152   fputs_filtered ("'", stream);
 153 }
 154
 155 /* Print the character string STRING, printing at most LENGTH characters.
 156    Printing stops early if the number hits print_max; repeat counts
 157    are printed as appropriate.  Print ellipses at the end if we
 158    had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
 159    FIXME:  This is a copy of the same function from c-exp.y.  It should
 160    be replaced with a true F77 version. */
 161
 162 static void
 163 f_printstr (struct ui_file *stream, const gdb_byte *string,
 164             unsigned int length, int width, int force_ellipses)
 165 {
 166   unsigned int i;
 167   unsigned int things_printed = 0;
 168   int in_quotes = 0;
 169   int need_comma = 0;
 170
 171   if (length == 0)
 172     {
 173       fputs_filtered ("''", gdb_stdout);
 174       return;
 175     }
 176
 177   for (i = 0; i < length && things_printed < print_max; ++i)
 178     {
 179       /* Position of the character we are examining
 180          to see whether it is repeated.  */
 181       unsigned int rep1;
 182       /* Number of repetitions we have detected so far.  */
 183       unsigned int reps;
 184
 185       QUIT;
 186
 187       if (need_comma)
 188         {
 189           fputs_filtered (", ", stream);
 190           need_comma = 0;
 191         }
 192
 193       rep1 = i + 1;
 194       reps = 1;
 195       while (rep1 < length && string[rep1] == string[i])
 196         {
 197           ++rep1;
 198           ++reps;
 199         }
 200
 201       if (reps > repeat_count_threshold)
 202         {
 203           if (in_quotes)
 204             {
 205               if (inspect_it)
 206                 fputs_filtered ("\\', ", stream);
 207               else
 208                 fputs_filtered ("', ", stream);
 209               in_quotes = 0;
 210             }
 211           f_printchar (string[i], stream);
 212           fprintf_filtered (stream, " <repeats %u times>", reps);
 213           i = rep1 - 1;
 214           things_printed += repeat_count_threshold;
 215           need_comma = 1;
 216         }
 217       else
 218         {
 219           if (!in_quotes)
 220             {
 221               if (inspect_it)
 222                 fputs_filtered ("\\'", stream);
 223               else
 224                 fputs_filtered ("'", stream);
 225               in_quotes = 1;
 226             }
 227           LA_EMIT_CHAR (string[i], stream, '"');
 228           ++things_printed;
 229         }
 230     }
 231
 232   /* Terminate the quotes if necessary.  */
 233   if (in_quotes)
 234     {
 235       if (inspect_it)
 236         fputs_filtered ("\\'", stream);
 237       else
 238         fputs_filtered ("'", stream);
 239     }
 240
 241   if (force_ellipses || i < length)
 242     fputs_filtered ("...", stream);
 243 }
 244
 245 /* FIXME:  This is a copy of c_create_fundamental_type(), before
 246    all the non-C types were stripped from it.  Needs to be fixed
 247    by an experienced F77 programmer. */
 248
 249 static struct type *
 250 f_create_fundamental_type (struct objfile *objfile, int typeid)
 251 {
 252   struct type *type = NULL;
 253
 254   switch (typeid)
 255     {
 256     case FT_VOID:
 257       type = init_type (TYPE_CODE_VOID,
 258                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 259                         0, "VOID", objfile);
 260       break;
 261     case FT_BOOLEAN:
 262       type = init_type (TYPE_CODE_BOOL,
 263                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 264                         TYPE_FLAG_UNSIGNED, "boolean", objfile);
 265       break;
 266     case FT_STRING:
 267       type = init_type (TYPE_CODE_STRING,
 268                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 269                         0, "string", objfile);
 270       break;
 271     case FT_CHAR:
 272       type = init_type (TYPE_CODE_INT,
 273                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 274                         0, "character", objfile);
 275       break;
 276     case FT_SIGNED_CHAR:
 277       type = init_type (TYPE_CODE_INT,
 278                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 279                         0, "integer*1", objfile);
 280       break;
 281     case FT_UNSIGNED_CHAR:
 282       type = init_type (TYPE_CODE_BOOL,
 283                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 284                         TYPE_FLAG_UNSIGNED, "logical*1", objfile);
 285       break;
 286     case FT_SHORT:
 287       type = init_type (TYPE_CODE_INT,
 288                         gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
 289                         0, "integer*2", objfile);
 290       break;
 291     case FT_SIGNED_SHORT:
 292       type = init_type (TYPE_CODE_INT,
 293                         gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
 294                         0, "short", objfile);   /* FIXME-fnf */
 295       break;
 296     case FT_UNSIGNED_SHORT:
 297       type = init_type (TYPE_CODE_BOOL,
 298                         gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
 299                         TYPE_FLAG_UNSIGNED, "logical*2", objfile);
 300       break;
 301     case FT_INTEGER:
 302       type = init_type (TYPE_CODE_INT,
 303                         gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
 304                         0, "integer*4", objfile);
 305       break;
 306     case FT_SIGNED_INTEGER:
 307       type = init_type (TYPE_CODE_INT,
 308                         gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
 309                         0, "integer", objfile);         /* FIXME -fnf */
 310       break;
 311     case FT_UNSIGNED_INTEGER:
 312       type = init_type (TYPE_CODE_BOOL,
 313                         gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
 314                         TYPE_FLAG_UNSIGNED, "logical*4", objfile);
 315       break;
 316     case FT_FIXED_DECIMAL:
 317       type = init_type (TYPE_CODE_INT,
 318                         gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
 319                         0, "fixed decimal", objfile);
 320       break;
 321     case FT_LONG:
 322       type = init_type (TYPE_CODE_INT,
 323                         gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
 324                         0, "long", objfile);
 325       break;
 326     case FT_SIGNED_LONG:
 327       type = init_type (TYPE_CODE_INT,
 328                         gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
 329                         0, "long", objfile);    /* FIXME -fnf */
 330       break;
 331     case FT_UNSIGNED_LONG:
 332       type = init_type (TYPE_CODE_INT,
 333                         gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
 334                         TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
 335       break;
 336     case FT_LONG_LONG:
 337       type = init_type (TYPE_CODE_INT,
 338                         gdbarch_long_long_bit (current_gdbarch)
 339                          / TARGET_CHAR_BIT,
 340                         0, "long long", objfile);
 341       break;
 342     case FT_SIGNED_LONG_LONG:
 343       type = init_type (TYPE_CODE_INT,
 344                         gdbarch_long_long_bit (current_gdbarch)
 345                          / TARGET_CHAR_BIT,
 346                         0, "signed long long", objfile);
 347       break;
 348     case FT_UNSIGNED_LONG_LONG:
 349       type = init_type (TYPE_CODE_INT,
 350                         gdbarch_long_long_bit (current_gdbarch)
 351                          / TARGET_CHAR_BIT,
 352                         TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
 353       break;
 354     case FT_FLOAT:
 355       type = init_type (TYPE_CODE_FLT,
 356                         TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
 357                         0, "real", objfile);
 358       break;
 359     case FT_DBL_PREC_FLOAT:
 360       type = init_type (TYPE_CODE_FLT,
 361                         TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
 362                         0, "real*8", objfile);
 363       break;
 364     case FT_FLOAT_DECIMAL:
 365       type = init_type (TYPE_CODE_FLT,
 366                         TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
 367                         0, "floating decimal", objfile);
 368       break;
 369     case FT_EXT_PREC_FLOAT:
 370       type = init_type (TYPE_CODE_FLT,
 371                         TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
 372                         0, "real*16", objfile);
 373       break;
 374     case FT_COMPLEX:
 375       type = init_type (TYPE_CODE_COMPLEX,
 376                         2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
 377                         0, "complex*8", objfile);
 378       TYPE_TARGET_TYPE (type) = builtin_type_f_real;
 379       break;
 380     case FT_DBL_PREC_COMPLEX:
 381       type = init_type (TYPE_CODE_COMPLEX,
 382                         2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
 383                         0, "complex*16", objfile);
 384       TYPE_TARGET_TYPE (type) = builtin_type_f_real_s8;
 385       break;
 386     case FT_EXT_PREC_COMPLEX:
 387       type = init_type (TYPE_CODE_COMPLEX,
 388                         2 * TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
 389                         0, "complex*32", objfile);
 390       TYPE_TARGET_TYPE (type) = builtin_type_f_real_s16;
 391       break;
 392     default:
 393       /* FIXME:  For now, if we are asked to produce a type not in this
 394          language, create the equivalent of a C integer type with the
 395          name "<?type?>".  When all the dust settles from the type
 396          reconstruction work, this should probably become an error. */
 397       type = init_type (TYPE_CODE_INT,
 398                         gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
 399                         0, "<?type?>", objfile);
 400       warning (_("internal error: no F77 fundamental type %d"), typeid);
 401       break;
 402     }
 403   return (type);
 404 }
 405 \f
 406
 407 /* Table of operators and their precedences for printing expressions.  */
 408
 409 static const struct op_print f_op_print_tab[] =
 410 {
 411   {"+", BINOP_ADD, PREC_ADD, 0},
 412   {"+", UNOP_PLUS, PREC_PREFIX, 0},
 413   {"-", BINOP_SUB, PREC_ADD, 0},
 414   {"-", UNOP_NEG, PREC_PREFIX, 0},
 415   {"*", BINOP_MUL, PREC_MUL, 0},
 416   {"/", BINOP_DIV, PREC_MUL, 0},
 417   {"DIV", BINOP_INTDIV, PREC_MUL, 0},
 418   {"MOD", BINOP_REM, PREC_MUL, 0},
 419   {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
 420   {".OR.", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
 421   {".AND.", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
 422   {".NOT.", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
 423   {".EQ.", BINOP_EQUAL, PREC_EQUAL, 0},
 424   {".NE.", BINOP_NOTEQUAL, PREC_EQUAL, 0},
 425   {".LE.", BINOP_LEQ, PREC_ORDER, 0},
 426   {".GE.", BINOP_GEQ, PREC_ORDER, 0},
 427   {".GT.", BINOP_GTR, PREC_ORDER, 0},
 428   {".LT.", BINOP_LESS, PREC_ORDER, 0},
 429   {"**", UNOP_IND, PREC_PREFIX, 0},
 430   {"@", BINOP_REPEAT, PREC_REPEAT, 0},
 431   {NULL, 0, 0, 0}
 432 };
 433 \f
 434 struct type **const (f_builtin_types[]) =
 435 {
 436   &builtin_type_f_character,
 437     &builtin_type_f_logical,
 438     &builtin_type_f_logical_s1,
 439     &builtin_type_f_logical_s2,
 440     &builtin_type_f_integer,
 441     &builtin_type_f_integer_s2,
 442     &builtin_type_f_real,
 443     &builtin_type_f_real_s8,
 444     &builtin_type_f_real_s16,
 445     &builtin_type_f_complex_s8,
 446     &builtin_type_f_complex_s16,
 447 #if 0
 448     &builtin_type_f_complex_s32,
 449 #endif
 450     &builtin_type_f_void,
 451     0
 452 };
 453
 454 /* This is declared in c-lang.h but it is silly to import that file for what
 455    is already just a hack. */
 456 extern int c_value_print (struct value *, struct ui_file *, int,
 457                           enum val_prettyprint);
 458
 459 const struct language_defn f_language_defn =
 460 {
 461   "fortran",
 462   language_fortran,
 463   f_builtin_types,
 464   range_check_on,
 465   type_check_on,
 466   case_sensitive_off,
 467   array_column_major,
 468   &exp_descriptor_standard,
 469   f_parse,                      /* parser */
 470   f_error,                      /* parser error function */
 471   null_post_parser,
 472   f_printchar,                  /* Print character constant */
 473   f_printstr,                   /* function to print string constant */
 474   f_emit_char,                  /* Function to print a single character */
 475   f_create_fundamental_type,    /* Create fundamental type in this language */
 476   f_print_type,                 /* Print a type using appropriate syntax */
 477   f_val_print,                  /* Print a value using appropriate syntax */
 478   c_value_print,                /* FIXME */
 479   NULL,                         /* Language specific skip_trampoline */
 480   value_of_this,                /* value_of_this */
 481   basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
 482   basic_lookup_transparent_type,/* lookup_transparent_type */
 483   NULL,                         /* Language specific symbol demangler */
 484   NULL,                         /* Language specific class_name_from_physname */
 485   f_op_print_tab,               /* expression operators for printing */
 486   0,                            /* arrays are first-class (not c-style) */
 487   1,                            /* String lower bound */
 488   &builtin_type_f_character,    /* Type of string elements */
 489   default_word_break_characters,
 490   NULL, /* FIXME: la_language_arch_info.  */
 491   default_print_array_index,
 492   LANG_MAGIC
 493 };
 494
 495 static void
 496 build_fortran_types (void)
 497 {
 498   builtin_type_f_void =
 499     init_type (TYPE_CODE_VOID, 1,
 500                0,
 501                "VOID", (struct objfile *) NULL);
 502
 503   builtin_type_f_character =
 504     init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 505                0,
 506                "character", (struct objfile *) NULL);
 507
 508   builtin_type_f_logical_s1 =
 509     init_type (TYPE_CODE_BOOL, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 510                TYPE_FLAG_UNSIGNED,
 511                "logical*1", (struct objfile *) NULL);
 512
 513   builtin_type_f_integer_s2 =
 514     init_type (TYPE_CODE_INT,
 515                gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
 516                0, "integer*2", (struct objfile *) NULL);
 517
 518   builtin_type_f_logical_s2 =
 519     init_type (TYPE_CODE_BOOL,
 520                gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
 521                TYPE_FLAG_UNSIGNED, "logical*2", (struct objfile *) NULL);
 522
 523   builtin_type_f_integer =
 524     init_type (TYPE_CODE_INT,
 525                gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
 526                0, "integer", (struct objfile *) NULL);
 527
 528   builtin_type_f_logical =
 529     init_type (TYPE_CODE_BOOL,
 530                gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
 531                TYPE_FLAG_UNSIGNED, "logical*4", (struct objfile *) NULL);
 532
 533   builtin_type_f_real =
 534     init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
 535                0,
 536                "real", (struct objfile *) NULL);
 537
 538   builtin_type_f_real_s8 =
 539     init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
 540                0,
 541                "real*8", (struct objfile *) NULL);
 542
 543   builtin_type_f_real_s16 =
 544     init_type (TYPE_CODE_FLT, TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
 545                0,
 546                "real*16", (struct objfile *) NULL);
 547
 548   builtin_type_f_complex_s8 =
 549     init_type (TYPE_CODE_COMPLEX, 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
 550                0,
 551                "complex*8", (struct objfile *) NULL);
 552   TYPE_TARGET_TYPE (builtin_type_f_complex_s8) = builtin_type_f_real;
 553
 554   builtin_type_f_complex_s16 =
 555     init_type (TYPE_CODE_COMPLEX, 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
 556                0,
 557                "complex*16", (struct objfile *) NULL);
 558   TYPE_TARGET_TYPE (builtin_type_f_complex_s16) = builtin_type_f_real_s8;
 559
 560   /* We have a new size == 4 double floats for the
 561      complex*32 data type */
 562
 563   builtin_type_f_complex_s32 =
 564     init_type (TYPE_CODE_COMPLEX, 2 * TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
 565                0,
 566                "complex*32", (struct objfile *) NULL);
 567   TYPE_TARGET_TYPE (builtin_type_f_complex_s32) = builtin_type_f_real_s16;
 568 }
 569
 570 void
 571 _initialize_f_language (void)
 572 {
 573   build_fortran_types ();
 574
 575   DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_f_character);
 576   DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_f_logical);
 577   DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_f_logical_s1);
 578   DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_f_logical_s2);
 579   DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_f_integer);
 580   DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_f_integer_s2);
 581   DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_f_real);
 582   DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_f_real_s8);
 583   DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_f_real_s16);
 584   DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_f_complex_s8);
 585   DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_f_complex_s16);
 586   DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_f_complex_s32);
 587   DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_f_void);
 588   DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_string);
 589   deprecated_register_gdbarch_swap (NULL, 0, build_fortran_types);
 590
 591   builtin_type_string =
 592     init_type (TYPE_CODE_STRING, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 593                0,
 594                "character string", (struct objfile *) NULL);
 595
 596   add_language (&f_language_defn);
 597 }
 598
 599 #if 0
 600 static SAVED_BF_PTR
 601 allocate_saved_bf_node (void)
 602 {
 603   SAVED_BF_PTR new;
 604
 605   new = (SAVED_BF_PTR) xmalloc (sizeof (SAVED_BF));
 606   return (new);
 607 }
 608
 609 static SAVED_FUNCTION *
 610 allocate_saved_function_node (void)
 611 {
 612   SAVED_FUNCTION *new;
 613
 614   new = (SAVED_FUNCTION *) xmalloc (sizeof (SAVED_FUNCTION));
 615   return (new);
 616 }
 617
 618 static SAVED_F77_COMMON_PTR
 619 allocate_saved_f77_common_node (void)
 620 {
 621   SAVED_F77_COMMON_PTR new;
 622
 623   new = (SAVED_F77_COMMON_PTR) xmalloc (sizeof (SAVED_F77_COMMON));
 624   return (new);
 625 }
 626
 627 static COMMON_ENTRY_PTR
 628 allocate_common_entry_node (void)
 629 {
 630   COMMON_ENTRY_PTR new;
 631
 632   new = (COMMON_ENTRY_PTR) xmalloc (sizeof (COMMON_ENTRY));
 633   return (new);
 634 }
 635 #endif
 636
 637 SAVED_F77_COMMON_PTR head_common_list = NULL;   /* Ptr to 1st saved COMMON  */
 638 SAVED_F77_COMMON_PTR tail_common_list = NULL;   /* Ptr to last saved COMMON  */
 639 SAVED_F77_COMMON_PTR current_common = NULL;     /* Ptr to current COMMON */
 640
 641 #if 0
 642 static SAVED_BF_PTR saved_bf_list = NULL;       /* Ptr to (.bf,function)
 643                                                    list */
 644 static SAVED_BF_PTR saved_bf_list_end = NULL;   /* Ptr to above list's end */
 645 static SAVED_BF_PTR current_head_bf_list = NULL;        /* Current head of above list
 646                                                          */
 647
 648 static SAVED_BF_PTR tmp_bf_ptr; /* Generic temporary for use
 649                                    in macros */
 650
 651 /* The following function simply enters a given common block onto
 652    the global common block chain */
 653
 654 static void
 655 add_common_block (char *name, CORE_ADDR offset, int secnum, char *func_stab)
 656 {
 657   SAVED_F77_COMMON_PTR tmp;
 658   char *c, *local_copy_func_stab;
 659
 660   /* If the COMMON block we are trying to add has a blank
 661      name (i.e. "#BLNK_COM") then we set it to __BLANK
 662      because the darn "#" character makes GDB's input
 663      parser have fits. */
 664
 665
 666   if (strcmp (name, BLANK_COMMON_NAME_ORIGINAL) == 0
 667       || strcmp (name, BLANK_COMMON_NAME_MF77) == 0)
 668     {
 669
 670       xfree (name);
 671       name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
 672       strcpy (name, BLANK_COMMON_NAME_LOCAL);
 673     }
 674
 675   tmp = allocate_saved_f77_common_node ();
 676
 677   local_copy_func_stab = xmalloc (strlen (func_stab) + 1);
 678   strcpy (local_copy_func_stab, func_stab);
 679
 680   tmp->name = xmalloc (strlen (name) + 1);
 681
 682   /* local_copy_func_stab is a stabstring, let us first extract the
 683      function name from the stab by NULLing out the ':' character. */
 684
 685
 686   c = NULL;
 687   c = strchr (local_copy_func_stab, ':');
 688
 689   if (c)
 690     *c = '\0';
 691   else
 692     error (_("Malformed function STAB found in add_common_block()"));
 693
 694
 695   tmp->owning_function = xmalloc (strlen (local_copy_func_stab) + 1);
 696
 697   strcpy (tmp->owning_function, local_copy_func_stab);
 698
 699   strcpy (tmp->name, name);
 700   tmp->offset = offset;
 701   tmp->next = NULL;
 702   tmp->entries = NULL;
 703   tmp->secnum = secnum;
 704
 705   current_common = tmp;
 706
 707   if (head_common_list == NULL)
 708     {
 709       head_common_list = tail_common_list = tmp;
 710     }
 711   else
 712     {
 713       tail_common_list->next = tmp;
 714       tail_common_list = tmp;
 715     }
 716 }
 717 #endif
 718
 719 /* The following function simply enters a given common entry onto
 720    the "current_common" block that has been saved away. */
 721
 722 #if 0
 723 static void
 724 add_common_entry (struct symbol *entry_sym_ptr)
 725 {
 726   COMMON_ENTRY_PTR tmp;
 727
 728
 729
 730   /* The order of this list is important, since
 731      we expect the entries to appear in decl.
 732      order when we later issue "info common" calls */
 733
 734   tmp = allocate_common_entry_node ();
 735
 736   tmp->next = NULL;
 737   tmp->symbol = entry_sym_ptr;
 738
 739   if (current_common == NULL)
 740     error (_("Attempt to add COMMON entry with no block open!"));
 741   else
 742     {
 743       if (current_common->entries == NULL)
 744         {
 745           current_common->entries = tmp;
 746           current_common->end_of_entries = tmp;
 747         }
 748       else
 749         {
 750           current_common->end_of_entries->next = tmp;
 751           current_common->end_of_entries = tmp;
 752         }
 753     }
 754 }
 755 #endif
 756
 757 /* This routine finds the first encountred COMMON block named "name" */
 758
 759 #if 0
 760 static SAVED_F77_COMMON_PTR
 761 find_first_common_named (char *name)
 762 {
 763
 764   SAVED_F77_COMMON_PTR tmp;
 765
 766   tmp = head_common_list;
 767
 768   while (tmp != NULL)
 769     {
 770       if (strcmp (tmp->name, name) == 0)
 771         return (tmp);
 772       else
 773         tmp = tmp->next;
 774     }
 775   return (NULL);
 776 }
 777 #endif
 778
 779 /* This routine finds the first encountred COMMON block named "name"
 780    that belongs to function funcname */
 781
 782 SAVED_F77_COMMON_PTR
 783 find_common_for_function (char *name, char *funcname)
 784 {
 785
 786   SAVED_F77_COMMON_PTR tmp;
 787
 788   tmp = head_common_list;
 789
 790   while (tmp != NULL)
 791     {
 792       if (DEPRECATED_STREQ (tmp->name, name)
 793           && DEPRECATED_STREQ (tmp->owning_function, funcname))
 794         return (tmp);
 795       else
 796         tmp = tmp->next;
 797     }
 798   return (NULL);
 799 }
 800
 801
 802 #if 0
 803
 804 /* The following function is called to patch up the offsets
 805    for the statics contained in the COMMON block named
 806    "name."  */
 807
 808 static void
 809 patch_common_entries (SAVED_F77_COMMON_PTR blk, CORE_ADDR offset, int secnum)
 810 {
 811   COMMON_ENTRY_PTR entry;
 812
 813   blk->offset = offset;         /* Keep this around for future use. */
 814
 815   entry = blk->entries;
 816
 817   while (entry != NULL)
 818     {
 819       SYMBOL_VALUE (entry->symbol) += offset;
 820       SYMBOL_SECTION (entry->symbol) = secnum;
 821
 822       entry = entry->next;
 823     }
 824   blk->secnum = secnum;
 825 }
 826
 827 /* Patch all commons named "name" that need patching.Since COMMON
 828    blocks occur with relative infrequency, we simply do a linear scan on
 829    the name.  Eventually, the best way to do this will be a
 830    hashed-lookup.  Secnum is the section number for the .bss section
 831    (which is where common data lives). */
 832
 833 static void
 834 patch_all_commons_by_name (char *name, CORE_ADDR offset, int secnum)
 835 {
 836
 837   SAVED_F77_COMMON_PTR tmp;
 838
 839   /* For blank common blocks, change the canonical reprsentation
 840      of a blank name */
 841
 842   if (strcmp (name, BLANK_COMMON_NAME_ORIGINAL) == 0
 843       || strcmp (name, BLANK_COMMON_NAME_MF77) == 0)
 844     {
 845       xfree (name);
 846       name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
 847       strcpy (name, BLANK_COMMON_NAME_LOCAL);
 848     }
 849
 850   tmp = head_common_list;
 851
 852   while (tmp != NULL)
 853     {
 854       if (COMMON_NEEDS_PATCHING (tmp))
 855         if (strcmp (tmp->name, name) == 0)
 856           patch_common_entries (tmp, offset, secnum);
 857
 858       tmp = tmp->next;
 859     }
 860 }
 861 #endif
 862
 863 /* This macro adds the symbol-number for the start of the function
 864    (the symbol number of the .bf) referenced by symnum_fcn to a
 865    list.  This list, in reality should be a FIFO queue but since
 866    #line pragmas sometimes cause line ranges to get messed up
 867    we simply create a linear list.  This list can then be searched
 868    first by a queueing algorithm and upon failure fall back to
 869    a linear scan. */
 870
 871 #if 0
 872 #define ADD_BF_SYMNUM(bf_sym,fcn_sym) \
 873   \
 874   if (saved_bf_list == NULL) \
 875 { \
 876     tmp_bf_ptr = allocate_saved_bf_node(); \
 877       \
 878         tmp_bf_ptr->symnum_bf = (bf_sym); \
 879           tmp_bf_ptr->symnum_fcn = (fcn_sym);  \
 880             tmp_bf_ptr->next = NULL; \
 881               \
 882                 current_head_bf_list = saved_bf_list = tmp_bf_ptr; \
 883                   saved_bf_list_end = tmp_bf_ptr; \
 884                   } \
 885 else \
 886 {  \
 887      tmp_bf_ptr = allocate_saved_bf_node(); \
 888        \
 889          tmp_bf_ptr->symnum_bf = (bf_sym);  \
 890            tmp_bf_ptr->symnum_fcn = (fcn_sym);  \
 891              tmp_bf_ptr->next = NULL;  \
 892                \
 893                  saved_bf_list_end->next = tmp_bf_ptr;  \
 894                    saved_bf_list_end = tmp_bf_ptr; \
 895                    }
 896 #endif
 897
 898 /* This function frees the entire (.bf,function) list */
 899
 900 #if 0
 901 static void
 902 clear_bf_list (void)
 903 {
 904
 905   SAVED_BF_PTR tmp = saved_bf_list;
 906   SAVED_BF_PTR next = NULL;
 907
 908   while (tmp != NULL)
 909     {
 910       next = tmp->next;
 911       xfree (tmp);
 912       tmp = next;
 913     }
 914   saved_bf_list = NULL;
 915 }
 916 #endif
 917
 918 int global_remote_debug;
 919
 920 #if 0
 921
 922 static long
 923 get_bf_for_fcn (long the_function)
 924 {
 925   SAVED_BF_PTR tmp;
 926   int nprobes = 0;
 927
 928   /* First use a simple queuing algorithm (i.e. look and see if the
 929      item at the head of the queue is the one you want)  */
 930
 931   if (saved_bf_list == NULL)
 932     internal_error (__FILE__, __LINE__,
 933                     _("cannot get .bf node off empty list"));
 934
 935   if (current_head_bf_list != NULL)
 936     if (current_head_bf_list->symnum_fcn == the_function)
 937       {
 938         if (global_remote_debug)
 939           fprintf_unfiltered (gdb_stderr, "*");
 940
 941         tmp = current_head_bf_list;
 942         current_head_bf_list = current_head_bf_list->next;
 943         return (tmp->symnum_bf);
 944       }
 945
 946   /* If the above did not work (probably because #line directives were
 947      used in the sourcefile and they messed up our internal tables) we now do
 948      the ugly linear scan */
 949
 950   if (global_remote_debug)
 951     fprintf_unfiltered (gdb_stderr, "\ndefaulting to linear scan\n");
 952
 953   nprobes = 0;
 954   tmp = saved_bf_list;
 955   while (tmp != NULL)
 956     {
 957       nprobes++;
 958       if (tmp->symnum_fcn == the_function)
 959         {
 960           if (global_remote_debug)
 961             fprintf_unfiltered (gdb_stderr, "Found in %d probes\n", nprobes);
 962           current_head_bf_list = tmp->next;
 963           return (tmp->symnum_bf);
 964         }
 965       tmp = tmp->next;
 966     }
 967
 968   return (-1);
 969 }
 970
 971 static SAVED_FUNCTION_PTR saved_function_list = NULL;
 972 static SAVED_FUNCTION_PTR saved_function_list_end = NULL;
 973
 974 static void
 975 clear_function_list (void)
 976 {
 977   SAVED_FUNCTION_PTR tmp = saved_function_list;
 978   SAVED_FUNCTION_PTR next = NULL;
 979
 980   while (tmp != NULL)
 981     {
 982       next = tmp->next;
 983       xfree (tmp);
 984       tmp = next;
 985     }
 986
 987   saved_function_list = NULL;
 988 }
 989 #endif