gdb/f-lang.c

   1 /* Fortran language support routines for GDB, the GNU debugger.
   2    Copyright 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002
   3    Free Software Foundation, Inc.
   4    Contributed by Motorola.  Adapted from the C parser by Farooq Butt
   5    (fmbutt@engage.sps.mot.com).
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 59 Temple Place - Suite 330,
  22    Boston, MA 02111-1307, USA.  */
  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
  34 /* The built-in types of F77.  FIXME: integer*4 is missing, plain
  35    logical is missing (builtin_type_logical is logical*4).  */
  36
  37 struct type *builtin_type_f_character;
  38 struct type *builtin_type_f_logical;
  39 struct type *builtin_type_f_logical_s1;
  40 struct type *builtin_type_f_logical_s2;
  41 struct type *builtin_type_f_integer;
  42 struct type *builtin_type_f_integer_s2;
  43 struct type *builtin_type_f_real;
  44 struct type *builtin_type_f_real_s8;
  45 struct type *builtin_type_f_real_s16;
  46 struct type *builtin_type_f_complex_s8;
  47 struct type *builtin_type_f_complex_s16;
  48 struct type *builtin_type_f_complex_s32;
  49 struct type *builtin_type_f_void;
  50
  51 /* Following is dubious stuff that had been in the xcoff reader. */
  52
  53 struct saved_fcn
  54   {
  55     long line_offset;           /* Line offset for function */
  56     struct saved_fcn *next;
  57   };
  58
  59
  60 struct saved_bf_symnum
  61   {
  62     long symnum_fcn;            /* Symnum of function (i.e. .function directive) */
  63     long symnum_bf;             /* Symnum of .bf for this function */
  64     struct saved_bf_symnum *next;
  65   };
  66
  67 typedef struct saved_fcn SAVED_FUNCTION, *SAVED_FUNCTION_PTR;
  68 typedef struct saved_bf_symnum SAVED_BF, *SAVED_BF_PTR;
  69
  70 /* Local functions */
  71
  72 extern void _initialize_f_language (void);
  73 #if 0
  74 static void clear_function_list (void);
  75 static long get_bf_for_fcn (long);
  76 static void clear_bf_list (void);
  77 static void patch_all_commons_by_name (char *, CORE_ADDR, int);
  78 static SAVED_F77_COMMON_PTR find_first_common_named (char *);
  79 static void add_common_entry (struct symbol *);
  80 static void add_common_block (char *, CORE_ADDR, int, char *);
  81 static SAVED_FUNCTION *allocate_saved_function_node (void);
  82 static SAVED_BF_PTR allocate_saved_bf_node (void);
  83 static COMMON_ENTRY_PTR allocate_common_entry_node (void);
  84 static SAVED_F77_COMMON_PTR allocate_saved_f77_common_node (void);
  85 static void patch_common_entries (SAVED_F77_COMMON_PTR, CORE_ADDR, int);
  86 #endif
  87
  88 static struct type *f_create_fundamental_type (struct objfile *, int);
  89 static void f_printstr (struct ui_file * stream, char *string,
  90                         unsigned int length, int width,
  91                         int force_ellipses);
  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 (register 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, char *string, unsigned int length,
 164             int width, int force_ellipses)
 165 {
 166   register unsigned int i;
 167   unsigned int things_printed = 0;
 168   int in_quotes = 0;
 169   int need_comma = 0;
 170   extern int inspect_it;
 171
 172   if (length == 0)
 173     {
 174       fputs_filtered ("''", gdb_stdout);
 175       return;
 176     }
 177
 178   for (i = 0; i < length && things_printed < print_max; ++i)
 179     {
 180       /* Position of the character we are examining
 181          to see whether it is repeated.  */
 182       unsigned int rep1;
 183       /* Number of repetitions we have detected so far.  */
 184       unsigned int reps;
 185
 186       QUIT;
 187
 188       if (need_comma)
 189         {
 190           fputs_filtered (", ", stream);
 191           need_comma = 0;
 192         }
 193
 194       rep1 = i + 1;
 195       reps = 1;
 196       while (rep1 < length && string[rep1] == string[i])
 197         {
 198           ++rep1;
 199           ++reps;
 200         }
 201
 202       if (reps > repeat_count_threshold)
 203         {
 204           if (in_quotes)
 205             {
 206               if (inspect_it)
 207                 fputs_filtered ("\\', ", stream);
 208               else
 209                 fputs_filtered ("', ", stream);
 210               in_quotes = 0;
 211             }
 212           f_printchar (string[i], stream);
 213           fprintf_filtered (stream, " <repeats %u times>", reps);
 214           i = rep1 - 1;
 215           things_printed += repeat_count_threshold;
 216           need_comma = 1;
 217         }
 218       else
 219         {
 220           if (!in_quotes)
 221             {
 222               if (inspect_it)
 223                 fputs_filtered ("\\'", stream);
 224               else
 225                 fputs_filtered ("'", stream);
 226               in_quotes = 1;
 227             }
 228           LA_EMIT_CHAR (string[i], stream, '"');
 229           ++things_printed;
 230         }
 231     }
 232
 233   /* Terminate the quotes if necessary.  */
 234   if (in_quotes)
 235     {
 236       if (inspect_it)
 237         fputs_filtered ("\\'", stream);
 238       else
 239         fputs_filtered ("'", stream);
 240     }
 241
 242   if (force_ellipses || i < length)
 243     fputs_filtered ("...", stream);
 244 }
 245
 246 /* FIXME:  This is a copy of c_create_fundamental_type(), before
 247    all the non-C types were stripped from it.  Needs to be fixed
 248    by an experienced F77 programmer. */
 249
 250 static struct type *
 251 f_create_fundamental_type (struct objfile *objfile, int typeid)
 252 {
 253   register struct type *type = NULL;
 254
 255   switch (typeid)
 256     {
 257     case FT_VOID:
 258       type = init_type (TYPE_CODE_VOID,
 259                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 260                         0, "VOID", objfile);
 261       break;
 262     case FT_BOOLEAN:
 263       type = init_type (TYPE_CODE_BOOL,
 264                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 265                         TYPE_FLAG_UNSIGNED, "boolean", objfile);
 266       break;
 267     case FT_STRING:
 268       type = init_type (TYPE_CODE_STRING,
 269                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 270                         0, "string", objfile);
 271       break;
 272     case FT_CHAR:
 273       type = init_type (TYPE_CODE_INT,
 274                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 275                         0, "character", objfile);
 276       break;
 277     case FT_SIGNED_CHAR:
 278       type = init_type (TYPE_CODE_INT,
 279                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 280                         0, "integer*1", objfile);
 281       break;
 282     case FT_UNSIGNED_CHAR:
 283       type = init_type (TYPE_CODE_BOOL,
 284                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 285                         TYPE_FLAG_UNSIGNED, "logical*1", objfile);
 286       break;
 287     case FT_SHORT:
 288       type = init_type (TYPE_CODE_INT,
 289                         TARGET_SHORT_BIT / TARGET_CHAR_BIT,
 290                         0, "integer*2", objfile);
 291       break;
 292     case FT_SIGNED_SHORT:
 293       type = init_type (TYPE_CODE_INT,
 294                         TARGET_SHORT_BIT / TARGET_CHAR_BIT,
 295                         0, "short", objfile);   /* FIXME-fnf */
 296       break;
 297     case FT_UNSIGNED_SHORT:
 298       type = init_type (TYPE_CODE_BOOL,
 299                         TARGET_SHORT_BIT / TARGET_CHAR_BIT,
 300                         TYPE_FLAG_UNSIGNED, "logical*2", objfile);
 301       break;
 302     case FT_INTEGER:
 303       type = init_type (TYPE_CODE_INT,
 304                         TARGET_INT_BIT / TARGET_CHAR_BIT,
 305                         0, "integer*4", objfile);
 306       break;
 307     case FT_SIGNED_INTEGER:
 308       type = init_type (TYPE_CODE_INT,
 309                         TARGET_INT_BIT / TARGET_CHAR_BIT,
 310                         0, "integer", objfile);         /* FIXME -fnf */
 311       break;
 312     case FT_UNSIGNED_INTEGER:
 313       type = init_type (TYPE_CODE_BOOL,
 314                         TARGET_INT_BIT / TARGET_CHAR_BIT,
 315                         TYPE_FLAG_UNSIGNED, "logical*4", objfile);
 316       break;
 317     case FT_FIXED_DECIMAL:
 318       type = init_type (TYPE_CODE_INT,
 319                         TARGET_INT_BIT / TARGET_CHAR_BIT,
 320                         0, "fixed decimal", objfile);
 321       break;
 322     case FT_LONG:
 323       type = init_type (TYPE_CODE_INT,
 324                         TARGET_LONG_BIT / TARGET_CHAR_BIT,
 325                         0, "long", objfile);
 326       break;
 327     case FT_SIGNED_LONG:
 328       type = init_type (TYPE_CODE_INT,
 329                         TARGET_LONG_BIT / TARGET_CHAR_BIT,
 330                         0, "long", objfile);    /* FIXME -fnf */
 331       break;
 332     case FT_UNSIGNED_LONG:
 333       type = init_type (TYPE_CODE_INT,
 334                         TARGET_LONG_BIT / TARGET_CHAR_BIT,
 335                         TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
 336       break;
 337     case FT_LONG_LONG:
 338       type = init_type (TYPE_CODE_INT,
 339                         TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
 340                         0, "long long", objfile);
 341       break;
 342     case FT_SIGNED_LONG_LONG:
 343       type = init_type (TYPE_CODE_INT,
 344                         TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
 345                         0, "signed long long", objfile);
 346       break;
 347     case FT_UNSIGNED_LONG_LONG:
 348       type = init_type (TYPE_CODE_INT,
 349                         TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
 350                         TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
 351       break;
 352     case FT_FLOAT:
 353       type = init_type (TYPE_CODE_FLT,
 354                         TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
 355                         0, "real", objfile);
 356       break;
 357     case FT_DBL_PREC_FLOAT:
 358       type = init_type (TYPE_CODE_FLT,
 359                         TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
 360                         0, "real*8", objfile);
 361       break;
 362     case FT_FLOAT_DECIMAL:
 363       type = init_type (TYPE_CODE_FLT,
 364                         TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
 365                         0, "floating decimal", objfile);
 366       break;
 367     case FT_EXT_PREC_FLOAT:
 368       type = init_type (TYPE_CODE_FLT,
 369                         TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
 370                         0, "real*16", objfile);
 371       break;
 372     case FT_COMPLEX:
 373       type = init_type (TYPE_CODE_COMPLEX,
 374                         2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
 375                         0, "complex*8", objfile);
 376       TYPE_TARGET_TYPE (type) = builtin_type_f_real;
 377       break;
 378     case FT_DBL_PREC_COMPLEX:
 379       type = init_type (TYPE_CODE_COMPLEX,
 380                         2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
 381                         0, "complex*16", objfile);
 382       TYPE_TARGET_TYPE (type) = builtin_type_f_real_s8;
 383       break;
 384     case FT_EXT_PREC_COMPLEX:
 385       type = init_type (TYPE_CODE_COMPLEX,
 386                         2 * TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
 387                         0, "complex*32", objfile);
 388       TYPE_TARGET_TYPE (type) = builtin_type_f_real_s16;
 389       break;
 390     default:
 391       /* FIXME:  For now, if we are asked to produce a type not in this
 392          language, create the equivalent of a C integer type with the
 393          name "<?type?>".  When all the dust settles from the type
 394          reconstruction work, this should probably become an error. */
 395       type = init_type (TYPE_CODE_INT,
 396                         TARGET_INT_BIT / TARGET_CHAR_BIT,
 397                         0, "<?type?>", objfile);
 398       warning ("internal error: no F77 fundamental type %d", typeid);
 399       break;
 400     }
 401   return (type);
 402 }
 403 \f
 404
 405 /* Table of operators and their precedences for printing expressions.  */
 406
 407 static const struct op_print f_op_print_tab[] =
 408 {
 409   {"+", BINOP_ADD, PREC_ADD, 0},
 410   {"+", UNOP_PLUS, PREC_PREFIX, 0},
 411   {"-", BINOP_SUB, PREC_ADD, 0},
 412   {"-", UNOP_NEG, PREC_PREFIX, 0},
 413   {"*", BINOP_MUL, PREC_MUL, 0},
 414   {"/", BINOP_DIV, PREC_MUL, 0},
 415   {"DIV", BINOP_INTDIV, PREC_MUL, 0},
 416   {"MOD", BINOP_REM, PREC_MUL, 0},
 417   {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
 418   {".OR.", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
 419   {".AND.", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
 420   {".NOT.", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
 421   {".EQ.", BINOP_EQUAL, PREC_EQUAL, 0},
 422   {".NE.", BINOP_NOTEQUAL, PREC_EQUAL, 0},
 423   {".LE.", BINOP_LEQ, PREC_ORDER, 0},
 424   {".GE.", BINOP_GEQ, PREC_ORDER, 0},
 425   {".GT.", BINOP_GTR, PREC_ORDER, 0},
 426   {".LT.", BINOP_LESS, PREC_ORDER, 0},
 427   {"**", UNOP_IND, PREC_PREFIX, 0},
 428   {"@", BINOP_REPEAT, PREC_REPEAT, 0},
 429   {NULL, 0, 0, 0}
 430 };
 431 \f
 432 struct type **const (f_builtin_types[]) =
 433 {
 434   &builtin_type_f_character,
 435     &builtin_type_f_logical,
 436     &builtin_type_f_logical_s1,
 437     &builtin_type_f_logical_s2,
 438     &builtin_type_f_integer,
 439     &builtin_type_f_integer_s2,
 440     &builtin_type_f_real,
 441     &builtin_type_f_real_s8,
 442     &builtin_type_f_real_s16,
 443     &builtin_type_f_complex_s8,
 444     &builtin_type_f_complex_s16,
 445 #if 0
 446     &builtin_type_f_complex_s32,
 447 #endif
 448     &builtin_type_f_void,
 449     0
 450 };
 451
 452 /* This is declared in c-lang.h but it is silly to import that file for what
 453    is already just a hack. */
 454 extern int c_value_print (struct value *, struct ui_file *, int,
 455                           enum val_prettyprint);
 456
 457 const struct language_defn f_language_defn =
 458 {
 459   "fortran",
 460   language_fortran,
 461   f_builtin_types,
 462   range_check_on,
 463   type_check_on,
 464   case_sensitive_off,
 465   f_parse,                      /* parser */
 466   f_error,                      /* parser error function */
 467   evaluate_subexp_standard,
 468   f_printchar,                  /* Print character constant */
 469   f_printstr,                   /* function to print string constant */
 470   f_emit_char,                  /* Function to print a single character */
 471   f_create_fundamental_type,    /* Create fundamental type in this language */
 472   f_print_type,                 /* Print a type using appropriate syntax */
 473   f_val_print,                  /* Print a value using appropriate syntax */
 474   c_value_print,                /* FIXME */
 475   NULL,                         /* Language specific skip_trampoline */
 476   {"", "", "", ""},             /* Binary format info */
 477   {"0%o", "0", "o", ""},        /* Octal format info */
 478   {"%d", "", "d", ""},          /* Decimal format info */
 479   {"0x%x", "0x", "x", ""},      /* Hex format info */
 480   f_op_print_tab,               /* expression operators for printing */
 481   0,                            /* arrays are first-class (not c-style) */
 482   1,                            /* String lower bound */
 483   &builtin_type_f_character,    /* Type of string elements */
 484   LANG_MAGIC
 485 };
 486
 487 static void
 488 build_fortran_types (void)
 489 {
 490   builtin_type_f_void =
 491     init_type (TYPE_CODE_VOID, 1,
 492                0,
 493                "VOID", (struct objfile *) NULL);
 494
 495   builtin_type_f_character =
 496     init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 497                0,
 498                "character", (struct objfile *) NULL);
 499
 500   builtin_type_f_logical_s1 =
 501     init_type (TYPE_CODE_BOOL, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 502                TYPE_FLAG_UNSIGNED,
 503                "logical*1", (struct objfile *) NULL);
 504
 505   builtin_type_f_integer_s2 =
 506     init_type (TYPE_CODE_INT, TARGET_SHORT_BIT / TARGET_CHAR_BIT,
 507                0,
 508                "integer*2", (struct objfile *) NULL);
 509
 510   builtin_type_f_logical_s2 =
 511     init_type (TYPE_CODE_BOOL, TARGET_SHORT_BIT / TARGET_CHAR_BIT,
 512                TYPE_FLAG_UNSIGNED,
 513                "logical*2", (struct objfile *) NULL);
 514
 515   builtin_type_f_integer =
 516     init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
 517                0,
 518                "integer", (struct objfile *) NULL);
 519
 520   builtin_type_f_logical =
 521     init_type (TYPE_CODE_BOOL, TARGET_INT_BIT / TARGET_CHAR_BIT,
 522                TYPE_FLAG_UNSIGNED,
 523                "logical*4", (struct objfile *) NULL);
 524
 525   builtin_type_f_real =
 526     init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
 527                0,
 528                "real", (struct objfile *) NULL);
 529
 530   builtin_type_f_real_s8 =
 531     init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
 532                0,
 533                "real*8", (struct objfile *) NULL);
 534
 535   builtin_type_f_real_s16 =
 536     init_type (TYPE_CODE_FLT, TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
 537                0,
 538                "real*16", (struct objfile *) NULL);
 539
 540   builtin_type_f_complex_s8 =
 541     init_type (TYPE_CODE_COMPLEX, 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
 542                0,
 543                "complex*8", (struct objfile *) NULL);
 544   TYPE_TARGET_TYPE (builtin_type_f_complex_s8) = builtin_type_f_real;
 545
 546   builtin_type_f_complex_s16 =
 547     init_type (TYPE_CODE_COMPLEX, 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
 548                0,
 549                "complex*16", (struct objfile *) NULL);
 550   TYPE_TARGET_TYPE (builtin_type_f_complex_s16) = builtin_type_f_real_s8;
 551
 552   /* We have a new size == 4 double floats for the
 553      complex*32 data type */
 554
 555   builtin_type_f_complex_s32 =
 556     init_type (TYPE_CODE_COMPLEX, 2 * TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
 557                0,
 558                "complex*32", (struct objfile *) NULL);
 559   TYPE_TARGET_TYPE (builtin_type_f_complex_s32) = builtin_type_f_real_s16;
 560 }
 561
 562 void
 563 _initialize_f_language (void)
 564 {
 565   build_fortran_types ();
 566   register_gdbarch_swap (&builtin_type_f_character,
 567                          sizeof (struct type *), NULL);
 568   register_gdbarch_swap (&builtin_type_f_logical,
 569                          sizeof (struct type *), NULL);
 570   register_gdbarch_swap (&builtin_type_f_logical_s1,
 571                          sizeof (struct type *), NULL);
 572   register_gdbarch_swap (&builtin_type_f_logical_s2,
 573                          sizeof (struct type *), NULL);
 574   register_gdbarch_swap (&builtin_type_f_integer,
 575                          sizeof (struct type *), NULL);
 576   register_gdbarch_swap (&builtin_type_f_integer_s2,
 577                          sizeof (struct type *), NULL);
 578   register_gdbarch_swap (&builtin_type_f_real,
 579                          sizeof (struct type *), NULL);
 580   register_gdbarch_swap (&builtin_type_f_real_s8,
 581                          sizeof (struct type *), NULL);
 582   register_gdbarch_swap (&builtin_type_f_real_s16,
 583                          sizeof (struct type *), NULL);
 584   register_gdbarch_swap (&builtin_type_f_complex_s8,
 585                          sizeof (struct type *), NULL);
 586   register_gdbarch_swap (&builtin_type_f_complex_s16,
 587                          sizeof (struct type *), NULL);
 588   register_gdbarch_swap (&builtin_type_f_complex_s32,
 589                          sizeof (struct type *), NULL);
 590   register_gdbarch_swap (&builtin_type_f_void,
 591                          sizeof (struct type *), NULL);
 592   register_gdbarch_swap (&builtin_type_string,
 593                          sizeof (struct type *), NULL);
 594
 595   register_gdbarch_swap (NULL, 0, build_fortran_types);
 596
 597   builtin_type_string =
 598     init_type (TYPE_CODE_STRING, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 599                0,
 600                "character string", (struct objfile *) NULL);
 601
 602   add_language (&f_language_defn);
 603 }
 604
 605 #if 0
 606 static SAVED_BF_PTR
 607 allocate_saved_bf_node (void)
 608 {
 609   SAVED_BF_PTR new;
 610
 611   new = (SAVED_BF_PTR) xmalloc (sizeof (SAVED_BF));
 612   return (new);
 613 }
 614
 615 static SAVED_FUNCTION *
 616 allocate_saved_function_node (void)
 617 {
 618   SAVED_FUNCTION *new;
 619
 620   new = (SAVED_FUNCTION *) xmalloc (sizeof (SAVED_FUNCTION));
 621   return (new);
 622 }
 623
 624 static SAVED_F77_COMMON_PTR
 625 allocate_saved_f77_common_node (void)
 626 {
 627   SAVED_F77_COMMON_PTR new;
 628
 629   new = (SAVED_F77_COMMON_PTR) xmalloc (sizeof (SAVED_F77_COMMON));
 630   return (new);
 631 }
 632
 633 static COMMON_ENTRY_PTR
 634 allocate_common_entry_node (void)
 635 {
 636   COMMON_ENTRY_PTR new;
 637
 638   new = (COMMON_ENTRY_PTR) xmalloc (sizeof (COMMON_ENTRY));
 639   return (new);
 640 }
 641 #endif
 642
 643 SAVED_F77_COMMON_PTR head_common_list = NULL;   /* Ptr to 1st saved COMMON  */
 644 SAVED_F77_COMMON_PTR tail_common_list = NULL;   /* Ptr to last saved COMMON  */
 645 SAVED_F77_COMMON_PTR current_common = NULL;     /* Ptr to current COMMON */
 646
 647 #if 0
 648 static SAVED_BF_PTR saved_bf_list = NULL;       /* Ptr to (.bf,function)
 649                                                    list */
 650 static SAVED_BF_PTR saved_bf_list_end = NULL;   /* Ptr to above list's end */
 651 static SAVED_BF_PTR current_head_bf_list = NULL;        /* Current head of above list
 652                                                          */
 653
 654 static SAVED_BF_PTR tmp_bf_ptr; /* Generic temporary for use
 655                                    in macros */
 656
 657 /* The following function simply enters a given common block onto
 658    the global common block chain */
 659
 660 static void
 661 add_common_block (char *name, CORE_ADDR offset, int secnum, char *func_stab)
 662 {
 663   SAVED_F77_COMMON_PTR tmp;
 664   char *c, *local_copy_func_stab;
 665
 666   /* If the COMMON block we are trying to add has a blank
 667      name (i.e. "#BLNK_COM") then we set it to __BLANK
 668      because the darn "#" character makes GDB's input
 669      parser have fits. */
 670
 671
 672   if (STREQ (name, BLANK_COMMON_NAME_ORIGINAL) ||
 673       STREQ (name, BLANK_COMMON_NAME_MF77))
 674     {
 675
 676       xfree (name);
 677       name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
 678       strcpy (name, BLANK_COMMON_NAME_LOCAL);
 679     }
 680
 681   tmp = allocate_saved_f77_common_node ();
 682
 683   local_copy_func_stab = xmalloc (strlen (func_stab) + 1);
 684   strcpy (local_copy_func_stab, func_stab);
 685
 686   tmp->name = xmalloc (strlen (name) + 1);
 687
 688   /* local_copy_func_stab is a stabstring, let us first extract the
 689      function name from the stab by NULLing out the ':' character. */
 690
 691
 692   c = NULL;
 693   c = strchr (local_copy_func_stab, ':');
 694
 695   if (c)
 696     *c = '\0';
 697   else
 698     error ("Malformed function STAB found in add_common_block()");
 699
 700
 701   tmp->owning_function = xmalloc (strlen (local_copy_func_stab) + 1);
 702
 703   strcpy (tmp->owning_function, local_copy_func_stab);
 704
 705   strcpy (tmp->name, name);
 706   tmp->offset = offset;
 707   tmp->next = NULL;
 708   tmp->entries = NULL;
 709   tmp->secnum = secnum;
 710
 711   current_common = tmp;
 712
 713   if (head_common_list == NULL)
 714     {
 715       head_common_list = tail_common_list = tmp;
 716     }
 717   else
 718     {
 719       tail_common_list->next = tmp;
 720       tail_common_list = tmp;
 721     }
 722 }
 723 #endif
 724
 725 /* The following function simply enters a given common entry onto
 726    the "current_common" block that has been saved away. */
 727
 728 #if 0
 729 static void
 730 add_common_entry (struct symbol *entry_sym_ptr)
 731 {
 732   COMMON_ENTRY_PTR tmp;
 733
 734
 735
 736   /* The order of this list is important, since
 737      we expect the entries to appear in decl.
 738      order when we later issue "info common" calls */
 739
 740   tmp = allocate_common_entry_node ();
 741
 742   tmp->next = NULL;
 743   tmp->symbol = entry_sym_ptr;
 744
 745   if (current_common == NULL)
 746     error ("Attempt to add COMMON entry with no block open!");
 747   else
 748     {
 749       if (current_common->entries == NULL)
 750         {
 751           current_common->entries = tmp;
 752           current_common->end_of_entries = tmp;
 753         }
 754       else
 755         {
 756           current_common->end_of_entries->next = tmp;
 757           current_common->end_of_entries = tmp;
 758         }
 759     }
 760 }
 761 #endif
 762
 763 /* This routine finds the first encountred COMMON block named "name" */
 764
 765 #if 0
 766 static SAVED_F77_COMMON_PTR
 767 find_first_common_named (char *name)
 768 {
 769
 770   SAVED_F77_COMMON_PTR tmp;
 771
 772   tmp = head_common_list;
 773
 774   while (tmp != NULL)
 775     {
 776       if (STREQ (tmp->name, name))
 777         return (tmp);
 778       else
 779         tmp = tmp->next;
 780     }
 781   return (NULL);
 782 }
 783 #endif
 784
 785 /* This routine finds the first encountred COMMON block named "name"
 786    that belongs to function funcname */
 787
 788 SAVED_F77_COMMON_PTR
 789 find_common_for_function (char *name, char *funcname)
 790 {
 791
 792   SAVED_F77_COMMON_PTR tmp;
 793
 794   tmp = head_common_list;
 795
 796   while (tmp != NULL)
 797     {
 798       if (STREQ (tmp->name, name) && STREQ (tmp->owning_function, funcname))
 799         return (tmp);
 800       else
 801         tmp = tmp->next;
 802     }
 803   return (NULL);
 804 }
 805
 806
 807 #if 0
 808
 809 /* The following function is called to patch up the offsets
 810    for the statics contained in the COMMON block named
 811    "name."  */
 812
 813 static void
 814 patch_common_entries (SAVED_F77_COMMON_PTR blk, CORE_ADDR offset, int secnum)
 815 {
 816   COMMON_ENTRY_PTR entry;
 817
 818   blk->offset = offset;         /* Keep this around for future use. */
 819
 820   entry = blk->entries;
 821
 822   while (entry != NULL)
 823     {
 824       SYMBOL_VALUE (entry->symbol) += offset;
 825       SYMBOL_SECTION (entry->symbol) = secnum;
 826
 827       entry = entry->next;
 828     }
 829   blk->secnum = secnum;
 830 }
 831
 832 /* Patch all commons named "name" that need patching.Since COMMON
 833    blocks occur with relative infrequency, we simply do a linear scan on
 834    the name.  Eventually, the best way to do this will be a
 835    hashed-lookup.  Secnum is the section number for the .bss section
 836    (which is where common data lives). */
 837
 838 static void
 839 patch_all_commons_by_name (char *name, CORE_ADDR offset, int secnum)
 840 {
 841
 842   SAVED_F77_COMMON_PTR tmp;
 843
 844   /* For blank common blocks, change the canonical reprsentation
 845      of a blank name */
 846
 847   if ((STREQ (name, BLANK_COMMON_NAME_ORIGINAL)) ||
 848       (STREQ (name, BLANK_COMMON_NAME_MF77)))
 849     {
 850       xfree (name);
 851       name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
 852       strcpy (name, BLANK_COMMON_NAME_LOCAL);
 853     }
 854
 855   tmp = head_common_list;
 856
 857   while (tmp != NULL)
 858     {
 859       if (COMMON_NEEDS_PATCHING (tmp))
 860         if (STREQ (tmp->name, name))
 861           patch_common_entries (tmp, offset, secnum);
 862
 863       tmp = tmp->next;
 864     }
 865 }
 866 #endif
 867
 868 /* This macro adds the symbol-number for the start of the function
 869    (the symbol number of the .bf) referenced by symnum_fcn to a
 870    list.  This list, in reality should be a FIFO queue but since
 871    #line pragmas sometimes cause line ranges to get messed up
 872    we simply create a linear list.  This list can then be searched
 873    first by a queueing algorithm and upon failure fall back to
 874    a linear scan. */
 875
 876 #if 0
 877 #define ADD_BF_SYMNUM(bf_sym,fcn_sym) \
 878   \
 879   if (saved_bf_list == NULL) \
 880 { \
 881     tmp_bf_ptr = allocate_saved_bf_node(); \
 882       \
 883         tmp_bf_ptr->symnum_bf = (bf_sym); \
 884           tmp_bf_ptr->symnum_fcn = (fcn_sym);  \
 885             tmp_bf_ptr->next = NULL; \
 886               \
 887                 current_head_bf_list = saved_bf_list = tmp_bf_ptr; \
 888                   saved_bf_list_end = tmp_bf_ptr; \
 889                   } \
 890 else \
 891 {  \
 892      tmp_bf_ptr = allocate_saved_bf_node(); \
 893        \
 894          tmp_bf_ptr->symnum_bf = (bf_sym);  \
 895            tmp_bf_ptr->symnum_fcn = (fcn_sym);  \
 896              tmp_bf_ptr->next = NULL;  \
 897                \
 898                  saved_bf_list_end->next = tmp_bf_ptr;  \
 899                    saved_bf_list_end = tmp_bf_ptr; \
 900                    }
 901 #endif
 902
 903 /* This function frees the entire (.bf,function) list */
 904
 905 #if 0
 906 static void
 907 clear_bf_list (void)
 908 {
 909
 910   SAVED_BF_PTR tmp = saved_bf_list;
 911   SAVED_BF_PTR next = NULL;
 912
 913   while (tmp != NULL)
 914     {
 915       next = tmp->next;
 916       xfree (tmp);
 917       tmp = next;
 918     }
 919   saved_bf_list = NULL;
 920 }
 921 #endif
 922
 923 int global_remote_debug;
 924
 925 #if 0
 926
 927 static long
 928 get_bf_for_fcn (long the_function)
 929 {
 930   SAVED_BF_PTR tmp;
 931   int nprobes = 0;
 932
 933   /* First use a simple queuing algorithm (i.e. look and see if the
 934      item at the head of the queue is the one you want)  */
 935
 936   if (saved_bf_list == NULL)
 937     internal_error (__FILE__, __LINE__,
 938                     "cannot get .bf node off empty list");
 939
 940   if (current_head_bf_list != NULL)
 941     if (current_head_bf_list->symnum_fcn == the_function)
 942       {
 943         if (global_remote_debug)
 944           fprintf_unfiltered (gdb_stderr, "*");
 945
 946         tmp = current_head_bf_list;
 947         current_head_bf_list = current_head_bf_list->next;
 948         return (tmp->symnum_bf);
 949       }
 950
 951   /* If the above did not work (probably because #line directives were
 952      used in the sourcefile and they messed up our internal tables) we now do
 953      the ugly linear scan */
 954
 955   if (global_remote_debug)
 956     fprintf_unfiltered (gdb_stderr, "\ndefaulting to linear scan\n");
 957
 958   nprobes = 0;
 959   tmp = saved_bf_list;
 960   while (tmp != NULL)
 961     {
 962       nprobes++;
 963       if (tmp->symnum_fcn == the_function)
 964         {
 965           if (global_remote_debug)
 966             fprintf_unfiltered (gdb_stderr, "Found in %d probes\n", nprobes);
 967           current_head_bf_list = tmp->next;
 968           return (tmp->symnum_bf);
 969         }
 970       tmp = tmp->next;
 971     }
 972
 973   return (-1);
 974 }
 975
 976 static SAVED_FUNCTION_PTR saved_function_list = NULL;
 977 static SAVED_FUNCTION_PTR saved_function_list_end = NULL;
 978
 979 static void
 980 clear_function_list (void)
 981 {
 982   SAVED_FUNCTION_PTR tmp = saved_function_list;
 983   SAVED_FUNCTION_PTR next = NULL;
 984
 985   while (tmp != NULL)
 986     {
 987       next = tmp->next;
 988       xfree (tmp);
 989       tmp = next;
 990     }
 991
 992   saved_function_list = NULL;
 993 }
 994 #endif