gdb/f-valprint.c

   1 /* Support for printing Fortran values for GDB, the GNU debugger.
   2
   3    Copyright (C) 1993-1996, 1998-2000, 2003, 2005-2012 Free Software
   4    Foundation, Inc.
   5
   6    Contributed by Motorola.  Adapted from the C definitions by Farooq Butt
   7    (fmbutt@engage.sps.mot.com), additionally worked over by Stan Shebs.
   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 "value.h"
  30 #include "valprint.h"
  31 #include "language.h"
  32 #include "f-lang.h"
  33 #include "frame.h"
  34 #include "gdbcore.h"
  35 #include "command.h"
  36 #include "block.h"
  37
  38 #if 0
  39 static int there_is_a_visible_common_named (char *);
  40 #endif
  41
  42 extern void _initialize_f_valprint (void);
  43 static void info_common_command (char *, int);
  44 static void list_all_visible_commons (const char *);
  45 static void f77_create_arrayprint_offset_tbl (struct type *,
  46                                               struct ui_file *);
  47 static void f77_get_dynamic_length_of_aggregate (struct type *);
  48
  49 int f77_array_offset_tbl[MAX_FORTRAN_DIMS + 1][2];
  50
  51 /* Array which holds offsets to be applied to get a row's elements
  52    for a given array.  Array also holds the size of each subarray.  */
  53
  54 /* The following macro gives us the size of the nth dimension, Where
  55    n is 1 based.  */
  56
  57 #define F77_DIM_SIZE(n) (f77_array_offset_tbl[n][1])
  58
  59 /* The following gives us the offset for row n where n is 1-based.  */
  60
  61 #define F77_DIM_OFFSET(n) (f77_array_offset_tbl[n][0])
  62
  63 int
  64 f77_get_lowerbound (struct type *type)
  65 {
  66   if (TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type))
  67     error (_("Lower bound may not be '*' in F77"));
  68
  69   return TYPE_ARRAY_LOWER_BOUND_VALUE (type);
  70 }
  71
  72 int
  73 f77_get_upperbound (struct type *type)
  74 {
  75   if (TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))
  76     {
  77       /* We have an assumed size array on our hands.  Assume that
  78          upper_bound == lower_bound so that we show at least 1 element.
  79          If the user wants to see more elements, let him manually ask for 'em
  80          and we'll subscript the array and show him.  */
  81
  82       return f77_get_lowerbound (type);
  83     }
  84
  85   return TYPE_ARRAY_UPPER_BOUND_VALUE (type);
  86 }
  87
  88 /* Obtain F77 adjustable array dimensions.  */
  89
  90 static void
  91 f77_get_dynamic_length_of_aggregate (struct type *type)
  92 {
  93   int upper_bound = -1;
  94   int lower_bound = 1;
  95
  96   /* Recursively go all the way down into a possibly multi-dimensional
  97      F77 array and get the bounds.  For simple arrays, this is pretty
  98      easy but when the bounds are dynamic, we must be very careful
  99      to add up all the lengths correctly.  Not doing this right
 100      will lead to horrendous-looking arrays in parameter lists.
 101
 102      This function also works for strings which behave very
 103      similarly to arrays.  */
 104
 105   if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY
 106       || TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRING)
 107     f77_get_dynamic_length_of_aggregate (TYPE_TARGET_TYPE (type));
 108
 109   /* Recursion ends here, start setting up lengths.  */
 110   lower_bound = f77_get_lowerbound (type);
 111   upper_bound = f77_get_upperbound (type);
 112
 113   /* Patch in a valid length value.  */
 114
 115   TYPE_LENGTH (type) =
 116     (upper_bound - lower_bound + 1)
 117     * TYPE_LENGTH (check_typedef (TYPE_TARGET_TYPE (type)));
 118 }
 119
 120 /* Function that sets up the array offset,size table for the array
 121    type "type".  */
 122
 123 static void
 124 f77_create_arrayprint_offset_tbl (struct type *type, struct ui_file *stream)
 125 {
 126   struct type *tmp_type;
 127   int eltlen;
 128   int ndimen = 1;
 129   int upper, lower;
 130
 131   tmp_type = type;
 132
 133   while ((TYPE_CODE (tmp_type) == TYPE_CODE_ARRAY))
 134     {
 135       upper = f77_get_upperbound (tmp_type);
 136       lower = f77_get_lowerbound (tmp_type);
 137
 138       F77_DIM_SIZE (ndimen) = upper - lower + 1;
 139
 140       tmp_type = TYPE_TARGET_TYPE (tmp_type);
 141       ndimen++;
 142     }
 143
 144   /* Now we multiply eltlen by all the offsets, so that later we
 145      can print out array elements correctly.  Up till now we
 146      know an offset to apply to get the item but we also
 147      have to know how much to add to get to the next item.  */
 148
 149   ndimen--;
 150   eltlen = TYPE_LENGTH (tmp_type);
 151   F77_DIM_OFFSET (ndimen) = eltlen;
 152   while (--ndimen > 0)
 153     {
 154       eltlen *= F77_DIM_SIZE (ndimen + 1);
 155       F77_DIM_OFFSET (ndimen) = eltlen;
 156     }
 157 }
 158
 159
 160
 161 /* Actual function which prints out F77 arrays, Valaddr == address in
 162    the superior.  Address == the address in the inferior.  */
 163
 164 static void
 165 f77_print_array_1 (int nss, int ndimensions, struct type *type,
 166                    const gdb_byte *valaddr,
 167                    int embedded_offset, CORE_ADDR address,
 168                    struct ui_file *stream, int recurse,
 169                    const struct value *val,
 170                    const struct value_print_options *options,
 171                    int *elts)
 172 {
 173   int i;
 174
 175   if (nss != ndimensions)
 176     {
 177       for (i = 0;
 178            (i < F77_DIM_SIZE (nss) && (*elts) < options->print_max);
 179            i++)
 180         {
 181           fprintf_filtered (stream, "( ");
 182           f77_print_array_1 (nss + 1, ndimensions, TYPE_TARGET_TYPE (type),
 183                              valaddr,
 184                              embedded_offset + i * F77_DIM_OFFSET (nss),
 185                              address,
 186                              stream, recurse, val, options, elts);
 187           fprintf_filtered (stream, ") ");
 188         }
 189       if (*elts >= options->print_max && i < F77_DIM_SIZE (nss))
 190         fprintf_filtered (stream, "...");
 191     }
 192   else
 193     {
 194       for (i = 0; i < F77_DIM_SIZE (nss) && (*elts) < options->print_max;
 195            i++, (*elts)++)
 196         {
 197           val_print (TYPE_TARGET_TYPE (type),
 198                      valaddr,
 199                      embedded_offset + i * F77_DIM_OFFSET (ndimensions),
 200                      address, stream, recurse,
 201                      val, options, current_language);
 202
 203           if (i != (F77_DIM_SIZE (nss) - 1))
 204             fprintf_filtered (stream, ", ");
 205
 206           if ((*elts == options->print_max - 1)
 207               && (i != (F77_DIM_SIZE (nss) - 1)))
 208             fprintf_filtered (stream, "...");
 209         }
 210     }
 211 }
 212
 213 /* This function gets called to print an F77 array, we set up some
 214    stuff and then immediately call f77_print_array_1().  */
 215
 216 static void
 217 f77_print_array (struct type *type, const gdb_byte *valaddr,
 218                  int embedded_offset,
 219                  CORE_ADDR address, struct ui_file *stream,
 220                  int recurse,
 221                  const struct value *val,
 222                  const struct value_print_options *options)
 223 {
 224   int ndimensions;
 225   int elts = 0;
 226
 227   ndimensions = calc_f77_array_dims (type);
 228
 229   if (ndimensions > MAX_FORTRAN_DIMS || ndimensions < 0)
 230     error (_("\
 231 Type node corrupt! F77 arrays cannot have %d subscripts (%d Max)"),
 232            ndimensions, MAX_FORTRAN_DIMS);
 233
 234   /* Since F77 arrays are stored column-major, we set up an
 235      offset table to get at the various row's elements.  The
 236      offset table contains entries for both offset and subarray size.  */
 237
 238   f77_create_arrayprint_offset_tbl (type, stream);
 239
 240   f77_print_array_1 (1, ndimensions, type, valaddr, embedded_offset,
 241                      address, stream, recurse, val, options, &elts);
 242 }
 243 \f
 244
 245 /* See val_print for a description of the various parameters of this
 246    function; they are identical.  */
 247
 248 void
 249 f_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset,
 250              CORE_ADDR address, struct ui_file *stream, int recurse,
 251              const struct value *original_value,
 252              const struct value_print_options *options)
 253 {
 254   struct gdbarch *gdbarch = get_type_arch (type);
 255   enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
 256   unsigned int i = 0;   /* Number of characters printed.  */
 257   struct type *elttype;
 258   LONGEST val;
 259   CORE_ADDR addr;
 260   int index;
 261
 262   CHECK_TYPEDEF (type);
 263   switch (TYPE_CODE (type))
 264     {
 265     case TYPE_CODE_STRING:
 266       f77_get_dynamic_length_of_aggregate (type);
 267       LA_PRINT_STRING (stream, builtin_type (gdbarch)->builtin_char,
 268                        valaddr + embedded_offset,
 269                        TYPE_LENGTH (type), NULL, 0, options);
 270       break;
 271
 272     case TYPE_CODE_ARRAY:
 273       if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_CHAR)
 274         {
 275           fprintf_filtered (stream, "(");
 276           f77_print_array (type, valaddr, embedded_offset,
 277                            address, stream, recurse, original_value, options);
 278           fprintf_filtered (stream, ")");
 279         }
 280       else
 281         {
 282           struct type *ch_type = TYPE_TARGET_TYPE (type);
 283
 284           f77_get_dynamic_length_of_aggregate (type);
 285           LA_PRINT_STRING (stream, ch_type,
 286                            valaddr + embedded_offset,
 287                            TYPE_LENGTH (type) / TYPE_LENGTH (ch_type),
 288                            NULL, 0, options);
 289         }
 290       break;
 291
 292     case TYPE_CODE_PTR:
 293       if (options->format && options->format != 's')
 294         {
 295           val_print_scalar_formatted (type, valaddr, embedded_offset,
 296                                       original_value, options, 0, stream);
 297           break;
 298         }
 299       else
 300         {
 301           addr = unpack_pointer (type, valaddr + embedded_offset);
 302           elttype = check_typedef (TYPE_TARGET_TYPE (type));
 303
 304           if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
 305             {
 306               /* Try to print what function it points to.  */
 307               print_address_demangle (gdbarch, addr, stream, demangle);
 308               return;
 309             }
 310
 311           if (options->addressprint && options->format != 's')
 312             fputs_filtered (paddress (gdbarch, addr), stream);
 313
 314           /* For a pointer to char or unsigned char, also print the string
 315              pointed to, unless pointer is null.  */
 316           if (TYPE_LENGTH (elttype) == 1
 317               && TYPE_CODE (elttype) == TYPE_CODE_INT
 318               && (options->format == 0 || options->format == 's')
 319               && addr != 0)
 320             i = val_print_string (TYPE_TARGET_TYPE (type), NULL, addr, -1,
 321                                   stream, options);
 322           return;
 323         }
 324       break;
 325
 326     case TYPE_CODE_REF:
 327       elttype = check_typedef (TYPE_TARGET_TYPE (type));
 328       if (options->addressprint)
 329         {
 330           CORE_ADDR addr
 331             = extract_typed_address (valaddr + embedded_offset, type);
 332
 333           fprintf_filtered (stream, "@");
 334           fputs_filtered (paddress (gdbarch, addr), stream);
 335           if (options->deref_ref)
 336             fputs_filtered (": ", stream);
 337         }
 338       /* De-reference the reference.  */
 339       if (options->deref_ref)
 340         {
 341           if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
 342             {
 343               struct value *deref_val;
 344
 345               deref_val = coerce_ref_if_computed (original_value);
 346               if (deref_val != NULL)
 347                 {
 348                   /* More complicated computed references are not supported.  */
 349                   gdb_assert (embedded_offset == 0);
 350                 }
 351               else
 352                 deref_val = value_at (TYPE_TARGET_TYPE (type),
 353                                       unpack_pointer (type,
 354                                                       (valaddr
 355                                                        + embedded_offset)));
 356
 357               common_val_print (deref_val, stream, recurse,
 358                                 options, current_language);
 359             }
 360           else
 361             fputs_filtered ("???", stream);
 362         }
 363       break;
 364
 365     case TYPE_CODE_FUNC:
 366       if (options->format)
 367         {
 368           val_print_scalar_formatted (type, valaddr, embedded_offset,
 369                                       original_value, options, 0, stream);
 370           break;
 371         }
 372       /* FIXME, we should consider, at least for ANSI C language, eliminating
 373          the distinction made between FUNCs and POINTERs to FUNCs.  */
 374       fprintf_filtered (stream, "{");
 375       type_print (type, "", stream, -1);
 376       fprintf_filtered (stream, "} ");
 377       /* Try to print what function it points to, and its address.  */
 378       print_address_demangle (gdbarch, address, stream, demangle);
 379       break;
 380
 381     case TYPE_CODE_INT:
 382     case TYPE_CODE_CHAR:
 383       if (options->format || options->output_format)
 384         {
 385           struct value_print_options opts = *options;
 386
 387           opts.format = (options->format ? options->format
 388                          : options->output_format);
 389           val_print_scalar_formatted (type, valaddr, embedded_offset,
 390                                       original_value, options, 0, stream);
 391         }
 392       else
 393         {
 394           val_print_type_code_int (type, valaddr + embedded_offset, stream);
 395           /* C and C++ has no single byte int type, char is used instead.
 396              Since we don't know whether the value is really intended to
 397              be used as an integer or a character, print the character
 398              equivalent as well.  */
 399           if (TYPE_LENGTH (type) == 1 || TYPE_CODE (type) == TYPE_CODE_CHAR)
 400             {
 401               LONGEST c;
 402
 403               fputs_filtered (" ", stream);
 404               c = unpack_long (type, valaddr + embedded_offset);
 405               LA_PRINT_CHAR ((unsigned char) c, type, stream);
 406             }
 407         }
 408       break;
 409
 410     case TYPE_CODE_FLAGS:
 411       if (options->format)
 412         val_print_scalar_formatted (type, valaddr, embedded_offset,
 413                                     original_value, options, 0, stream);
 414       else
 415         val_print_type_code_flags (type, valaddr + embedded_offset, stream);
 416       break;
 417
 418     case TYPE_CODE_FLT:
 419       if (options->format)
 420         val_print_scalar_formatted (type, valaddr, embedded_offset,
 421                                     original_value, options, 0, stream);
 422       else
 423         print_floating (valaddr + embedded_offset, type, stream);
 424       break;
 425
 426     case TYPE_CODE_VOID:
 427       fprintf_filtered (stream, "VOID");
 428       break;
 429
 430     case TYPE_CODE_ERROR:
 431       fprintf_filtered (stream, "%s", TYPE_ERROR_NAME (type));
 432       break;
 433
 434     case TYPE_CODE_RANGE:
 435       /* FIXME, we should not ever have to print one of these yet.  */
 436       fprintf_filtered (stream, "<range type>");
 437       break;
 438
 439     case TYPE_CODE_BOOL:
 440       if (options->format || options->output_format)
 441         {
 442           struct value_print_options opts = *options;
 443
 444           opts.format = (options->format ? options->format
 445                          : options->output_format);
 446           val_print_scalar_formatted (type, valaddr, embedded_offset,
 447                                       original_value, &opts, 0, stream);
 448         }
 449       else
 450         {
 451           val = extract_unsigned_integer (valaddr + embedded_offset,
 452                                           TYPE_LENGTH (type), byte_order);
 453           if (val == 0)
 454             fprintf_filtered (stream, ".FALSE.");
 455           else if (val == 1)
 456             fprintf_filtered (stream, ".TRUE.");
 457           else
 458             /* Not a legitimate logical type, print as an integer.  */
 459             {
 460               /* Bash the type code temporarily.  */
 461               TYPE_CODE (type) = TYPE_CODE_INT;
 462               val_print (type, valaddr, embedded_offset,
 463                          address, stream, recurse,
 464                          original_value, options, current_language);
 465               /* Restore the type code so later uses work as intended.  */
 466               TYPE_CODE (type) = TYPE_CODE_BOOL;
 467             }
 468         }
 469       break;
 470
 471     case TYPE_CODE_COMPLEX:
 472       type = TYPE_TARGET_TYPE (type);
 473       fputs_filtered ("(", stream);
 474       print_floating (valaddr + embedded_offset, type, stream);
 475       fputs_filtered (",", stream);
 476       print_floating (valaddr + embedded_offset + TYPE_LENGTH (type),
 477                       type, stream);
 478       fputs_filtered (")", stream);
 479       break;
 480
 481     case TYPE_CODE_UNDEF:
 482       /* This happens (without TYPE_FLAG_STUB set) on systems which don't use
 483          dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
 484          and no complete type for struct foo in that file.  */
 485       fprintf_filtered (stream, "<incomplete type>");
 486       break;
 487
 488     case TYPE_CODE_STRUCT:
 489     case TYPE_CODE_UNION:
 490       /* Starting from the Fortran 90 standard, Fortran supports derived
 491          types.  */
 492       fprintf_filtered (stream, "( ");
 493       for (index = 0; index < TYPE_NFIELDS (type); index++)
 494         {
 495           int offset = TYPE_FIELD_BITPOS (type, index) / 8;
 496
 497           val_print (TYPE_FIELD_TYPE (type, index), valaddr,
 498                      embedded_offset + offset,
 499                      address, stream, recurse + 1,
 500                      original_value, options, current_language);
 501           if (index != TYPE_NFIELDS (type) - 1)
 502             fputs_filtered (", ", stream);
 503         }
 504       fprintf_filtered (stream, " )");
 505       break;
 506
 507     default:
 508       error (_("Invalid F77 type code %d in symbol table."), TYPE_CODE (type));
 509     }
 510   gdb_flush (stream);
 511 }
 512
 513 static void
 514 list_all_visible_commons (const char *funname)
 515 {
 516   SAVED_F77_COMMON_PTR tmp;
 517
 518   tmp = head_common_list;
 519
 520   printf_filtered (_("All COMMON blocks visible at this level:\n\n"));
 521
 522   while (tmp != NULL)
 523     {
 524       if (strcmp (tmp->owning_function, funname) == 0)
 525         printf_filtered ("%s\n", tmp->name);
 526
 527       tmp = tmp->next;
 528     }
 529 }
 530
 531 /* This function is used to print out the values in a given COMMON
 532    block.  It will always use the most local common block of the
 533    given name.  */
 534
 535 static void
 536 info_common_command (char *comname, int from_tty)
 537 {
 538   SAVED_F77_COMMON_PTR the_common;
 539   COMMON_ENTRY_PTR entry;
 540   struct frame_info *fi;
 541   const char *funname = 0;
 542   struct symbol *func;
 543
 544   /* We have been told to display the contents of F77 COMMON
 545      block supposedly visible in this function.  Let us
 546      first make sure that it is visible and if so, let
 547      us display its contents.  */
 548
 549   fi = get_selected_frame (_("No frame selected"));
 550
 551   /* The following is generally ripped off from stack.c's routine
 552      print_frame_info().  */
 553
 554   func = find_pc_function (get_frame_pc (fi));
 555   if (func)
 556     {
 557       /* In certain pathological cases, the symtabs give the wrong
 558          function (when we are in the first function in a file which
 559          is compiled without debugging symbols, the previous function
 560          is compiled with debugging symbols, and the "foo.o" symbol
 561          that is supposed to tell us where the file with debugging symbols
 562          ends has been truncated by ar because it is longer than 15
 563          characters).
 564
 565          So look in the minimal symbol tables as well, and if it comes
 566          up with a larger address for the function use that instead.
 567          I don't think this can ever cause any problems; there shouldn't
 568          be any minimal symbols in the middle of a function.
 569          FIXME:  (Not necessarily true.  What about text labels?)  */
 570
 571       struct minimal_symbol *msymbol =
 572         lookup_minimal_symbol_by_pc (get_frame_pc (fi));
 573
 574       if (msymbol != NULL
 575           && (SYMBOL_VALUE_ADDRESS (msymbol)
 576               > BLOCK_START (SYMBOL_BLOCK_VALUE (func))))
 577         funname = SYMBOL_LINKAGE_NAME (msymbol);
 578       else
 579         funname = SYMBOL_LINKAGE_NAME (func);
 580     }
 581   else
 582     {
 583       struct minimal_symbol *msymbol =
 584         lookup_minimal_symbol_by_pc (get_frame_pc (fi));
 585
 586       if (msymbol != NULL)
 587         funname = SYMBOL_LINKAGE_NAME (msymbol);
 588       else /* Got no 'funname', code below will fail.  */
 589         error (_("No function found for frame."));
 590     }
 591
 592   /* If comname is NULL, we assume the user wishes to see the
 593      which COMMON blocks are visible here and then return.  */
 594
 595   if (comname == 0)
 596     {
 597       list_all_visible_commons (funname);
 598       return;
 599     }
 600
 601   the_common = find_common_for_function (comname, funname);
 602
 603   if (the_common)
 604     {
 605       if (strcmp (comname, BLANK_COMMON_NAME_LOCAL) == 0)
 606         printf_filtered (_("Contents of blank COMMON block:\n"));
 607       else
 608         printf_filtered (_("Contents of F77 COMMON block '%s':\n"), comname);
 609
 610       printf_filtered ("\n");
 611       entry = the_common->entries;
 612
 613       while (entry != NULL)
 614         {
 615           print_variable_and_value (NULL, entry->symbol, fi, gdb_stdout, 0);
 616           entry = entry->next;
 617         }
 618     }
 619   else
 620     printf_filtered (_("Cannot locate the common block %s in function '%s'\n"),
 621                      comname, funname);
 622 }
 623
 624 /* This function is used to determine whether there is a
 625    F77 common block visible at the current scope called 'comname'.  */
 626
 627 #if 0
 628 static int
 629 there_is_a_visible_common_named (char *comname)
 630 {
 631   SAVED_F77_COMMON_PTR the_common;
 632   struct frame_info *fi;
 633   char *funname = 0;
 634   struct symbol *func;
 635
 636   if (comname == NULL)
 637     error (_("Cannot deal with NULL common name!"));
 638
 639   fi = get_selected_frame (_("No frame selected"));
 640
 641   /* The following is generally ripped off from stack.c's routine
 642      print_frame_info().  */
 643
 644   func = find_pc_function (fi->pc);
 645   if (func)
 646     {
 647       /* In certain pathological cases, the symtabs give the wrong
 648          function (when we are in the first function in a file which
 649          is compiled without debugging symbols, the previous function
 650          is compiled with debugging symbols, and the "foo.o" symbol
 651          that is supposed to tell us where the file with debugging symbols
 652          ends has been truncated by ar because it is longer than 15
 653          characters).
 654
 655          So look in the minimal symbol tables as well, and if it comes
 656          up with a larger address for the function use that instead.
 657          I don't think this can ever cause any problems; there shouldn't
 658          be any minimal symbols in the middle of a function.
 659          FIXME:  (Not necessarily true.  What about text labels?)  */
 660
 661       struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc);
 662
 663       if (msymbol != NULL
 664           && (SYMBOL_VALUE_ADDRESS (msymbol)
 665               > BLOCK_START (SYMBOL_BLOCK_VALUE (func))))
 666         funname = SYMBOL_LINKAGE_NAME (msymbol);
 667       else
 668         funname = SYMBOL_LINKAGE_NAME (func);
 669     }
 670   else
 671     {
 672       struct minimal_symbol *msymbol =
 673         lookup_minimal_symbol_by_pc (fi->pc);
 674
 675       if (msymbol != NULL)
 676         funname = SYMBOL_LINKAGE_NAME (msymbol);
 677     }
 678
 679   the_common = find_common_for_function (comname, funname);
 680
 681   return (the_common ? 1 : 0);
 682 }
 683 #endif
 684
 685 void
 686 _initialize_f_valprint (void)
 687 {
 688   add_info ("common", info_common_command,
 689             _("Print out the values contained in a Fortran COMMON block."));
 690   if (xdb_commands)
 691     add_com ("lc", class_info, info_common_command,
 692              _("Print out the values contained in a Fortran COMMON block."));
 693 }