2004-08-10 Michael Chastain <mec.gnu@mindspring.com>
[deliverable/binutils-gdb.git] / gdb / f-valprint.c
CommitLineData
c906108c 1/* Support for printing Fortran values for GDB, the GNU debugger.
22abf04a 2 Copyright 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2003
b6ba6518 3 Free Software Foundation, Inc.
c906108c
SS
4 Contributed by Motorola. Adapted from the C definitions by Farooq Butt
5 (fmbutt@engage.sps.mot.com), additionally worked over by Stan Shebs.
6
c5aa993b 7 This file is part of GDB.
c906108c 8
c5aa993b
JM
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.
c906108c 13
c5aa993b
JM
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.
c906108c 18
c5aa993b
JM
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. */
c906108c
SS
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"
c906108c
SS
30#include "valprint.h"
31#include "language.h"
c5aa993b 32#include "f-lang.h"
c906108c
SS
33#include "frame.h"
34#include "gdbcore.h"
35#include "command.h"
fe898f56 36#include "block.h"
c906108c
SS
37
38#if 0
a14ed312 39static int there_is_a_visible_common_named (char *);
c906108c
SS
40#endif
41
a14ed312
KB
42extern void _initialize_f_valprint (void);
43static void info_common_command (char *, int);
44static void list_all_visible_commons (char *);
d9fcf2fb
JM
45static void f77_print_array (struct type *, char *, CORE_ADDR,
46 struct ui_file *, int, int, int,
47 enum val_prettyprint);
48static void f77_print_array_1 (int, int, struct type *, char *,
49 CORE_ADDR, struct ui_file *, int, int, int,
b3cacbee
DL
50 enum val_prettyprint,
51 int *elts);
d9fcf2fb
JM
52static void f77_create_arrayprint_offset_tbl (struct type *,
53 struct ui_file *);
a14ed312 54static void f77_get_dynamic_length_of_aggregate (struct type *);
c906108c 55
c5aa993b 56int f77_array_offset_tbl[MAX_FORTRAN_DIMS + 1][2];
c906108c
SS
57
58/* Array which holds offsets to be applied to get a row's elements
59 for a given array. Array also holds the size of each subarray. */
60
61/* The following macro gives us the size of the nth dimension, Where
c5aa993b 62 n is 1 based. */
c906108c
SS
63
64#define F77_DIM_SIZE(n) (f77_array_offset_tbl[n][1])
65
c5aa993b 66/* The following gives us the offset for row n where n is 1-based. */
c906108c
SS
67
68#define F77_DIM_OFFSET(n) (f77_array_offset_tbl[n][0])
69
c5aa993b 70int
fba45db2 71f77_get_dynamic_lowerbound (struct type *type, int *lower_bound)
c906108c 72{
c5aa993b
JM
73 CORE_ADDR current_frame_addr;
74 CORE_ADDR ptr_to_lower_bound;
75
c906108c
SS
76 switch (TYPE_ARRAY_LOWER_BOUND_TYPE (type))
77 {
78 case BOUND_BY_VALUE_ON_STACK:
8b36eed8 79 current_frame_addr = get_frame_base (deprecated_selected_frame);
c5aa993b 80 if (current_frame_addr > 0)
c906108c 81 {
c5aa993b
JM
82 *lower_bound =
83 read_memory_integer (current_frame_addr +
c906108c
SS
84 TYPE_ARRAY_LOWER_BOUND_VALUE (type),
85 4);
86 }
87 else
88 {
c5aa993b
JM
89 *lower_bound = DEFAULT_LOWER_BOUND;
90 return BOUND_FETCH_ERROR;
c906108c 91 }
c5aa993b
JM
92 break;
93
c906108c
SS
94 case BOUND_SIMPLE:
95 *lower_bound = TYPE_ARRAY_LOWER_BOUND_VALUE (type);
c5aa993b
JM
96 break;
97
98 case BOUND_CANNOT_BE_DETERMINED:
99 error ("Lower bound may not be '*' in F77");
100 break;
101
c906108c 102 case BOUND_BY_REF_ON_STACK:
8b36eed8 103 current_frame_addr = get_frame_base (deprecated_selected_frame);
c5aa993b 104 if (current_frame_addr > 0)
c906108c 105 {
c5aa993b 106 ptr_to_lower_bound =
0d540cdf
KD
107 read_memory_typed_address (current_frame_addr +
108 TYPE_ARRAY_LOWER_BOUND_VALUE (type),
109 builtin_type_void_data_ptr);
c5aa993b 110 *lower_bound = read_memory_integer (ptr_to_lower_bound, 4);
c906108c
SS
111 }
112 else
113 {
c5aa993b
JM
114 *lower_bound = DEFAULT_LOWER_BOUND;
115 return BOUND_FETCH_ERROR;
c906108c 116 }
c5aa993b
JM
117 break;
118
119 case BOUND_BY_REF_IN_REG:
120 case BOUND_BY_VALUE_IN_REG:
121 default:
c906108c 122 error ("??? unhandled dynamic array bound type ???");
c5aa993b 123 break;
c906108c
SS
124 }
125 return BOUND_FETCH_OK;
126}
127
c5aa993b 128int
fba45db2 129f77_get_dynamic_upperbound (struct type *type, int *upper_bound)
c906108c
SS
130{
131 CORE_ADDR current_frame_addr = 0;
c5aa993b
JM
132 CORE_ADDR ptr_to_upper_bound;
133
c906108c
SS
134 switch (TYPE_ARRAY_UPPER_BOUND_TYPE (type))
135 {
136 case BOUND_BY_VALUE_ON_STACK:
8b36eed8 137 current_frame_addr = get_frame_base (deprecated_selected_frame);
c5aa993b 138 if (current_frame_addr > 0)
c906108c 139 {
c5aa993b
JM
140 *upper_bound =
141 read_memory_integer (current_frame_addr +
c906108c
SS
142 TYPE_ARRAY_UPPER_BOUND_VALUE (type),
143 4);
144 }
145 else
146 {
c5aa993b
JM
147 *upper_bound = DEFAULT_UPPER_BOUND;
148 return BOUND_FETCH_ERROR;
c906108c 149 }
c5aa993b
JM
150 break;
151
c906108c
SS
152 case BOUND_SIMPLE:
153 *upper_bound = TYPE_ARRAY_UPPER_BOUND_VALUE (type);
c5aa993b
JM
154 break;
155
156 case BOUND_CANNOT_BE_DETERMINED:
c906108c 157 /* we have an assumed size array on our hands. Assume that
c5aa993b
JM
158 upper_bound == lower_bound so that we show at least
159 1 element.If the user wants to see more elements, let
160 him manually ask for 'em and we'll subscript the
161 array and show him */
c906108c 162 f77_get_dynamic_lowerbound (type, upper_bound);
c5aa993b
JM
163 break;
164
c906108c 165 case BOUND_BY_REF_ON_STACK:
8b36eed8 166 current_frame_addr = get_frame_base (deprecated_selected_frame);
c5aa993b 167 if (current_frame_addr > 0)
c906108c 168 {
c5aa993b 169 ptr_to_upper_bound =
0d540cdf
KD
170 read_memory_typed_address (current_frame_addr +
171 TYPE_ARRAY_UPPER_BOUND_VALUE (type),
172 builtin_type_void_data_ptr);
c5aa993b 173 *upper_bound = read_memory_integer (ptr_to_upper_bound, 4);
c906108c
SS
174 }
175 else
176 {
c5aa993b 177 *upper_bound = DEFAULT_UPPER_BOUND;
c906108c
SS
178 return BOUND_FETCH_ERROR;
179 }
c5aa993b
JM
180 break;
181
182 case BOUND_BY_REF_IN_REG:
183 case BOUND_BY_VALUE_IN_REG:
184 default:
c906108c 185 error ("??? unhandled dynamic array bound type ???");
c5aa993b 186 break;
c906108c
SS
187 }
188 return BOUND_FETCH_OK;
189}
190
c5aa993b 191/* Obtain F77 adjustable array dimensions */
c906108c
SS
192
193static void
fba45db2 194f77_get_dynamic_length_of_aggregate (struct type *type)
c906108c
SS
195{
196 int upper_bound = -1;
c5aa993b
JM
197 int lower_bound = 1;
198 int retcode;
199
c906108c
SS
200 /* Recursively go all the way down into a possibly multi-dimensional
201 F77 array and get the bounds. For simple arrays, this is pretty
202 easy but when the bounds are dynamic, we must be very careful
203 to add up all the lengths correctly. Not doing this right
204 will lead to horrendous-looking arrays in parameter lists.
c5aa993b 205
c906108c 206 This function also works for strings which behave very
c5aa993b
JM
207 similarly to arrays. */
208
209 if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY
210 || TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRING)
c906108c 211 f77_get_dynamic_length_of_aggregate (TYPE_TARGET_TYPE (type));
c5aa993b
JM
212
213 /* Recursion ends here, start setting up lengths. */
214 retcode = f77_get_dynamic_lowerbound (type, &lower_bound);
c906108c 215 if (retcode == BOUND_FETCH_ERROR)
c5aa993b
JM
216 error ("Cannot obtain valid array lower bound");
217
218 retcode = f77_get_dynamic_upperbound (type, &upper_bound);
c906108c 219 if (retcode == BOUND_FETCH_ERROR)
c5aa993b
JM
220 error ("Cannot obtain valid array upper bound");
221
222 /* Patch in a valid length value. */
223
c906108c
SS
224 TYPE_LENGTH (type) =
225 (upper_bound - lower_bound + 1) * TYPE_LENGTH (check_typedef (TYPE_TARGET_TYPE (type)));
c5aa993b 226}
c906108c
SS
227
228/* Function that sets up the array offset,size table for the array
c5aa993b 229 type "type". */
c906108c 230
c5aa993b 231static void
fba45db2 232f77_create_arrayprint_offset_tbl (struct type *type, struct ui_file *stream)
c906108c
SS
233{
234 struct type *tmp_type;
235 int eltlen;
236 int ndimen = 1;
c5aa993b
JM
237 int upper, lower, retcode;
238
239 tmp_type = type;
240
241 while ((TYPE_CODE (tmp_type) == TYPE_CODE_ARRAY))
c906108c
SS
242 {
243 if (TYPE_ARRAY_UPPER_BOUND_TYPE (tmp_type) == BOUND_CANNOT_BE_DETERMINED)
c5aa993b
JM
244 fprintf_filtered (stream, "<assumed size array> ");
245
c906108c
SS
246 retcode = f77_get_dynamic_upperbound (tmp_type, &upper);
247 if (retcode == BOUND_FETCH_ERROR)
c5aa993b
JM
248 error ("Cannot obtain dynamic upper bound");
249
250 retcode = f77_get_dynamic_lowerbound (tmp_type, &lower);
c906108c 251 if (retcode == BOUND_FETCH_ERROR)
c5aa993b
JM
252 error ("Cannot obtain dynamic lower bound");
253
c906108c 254 F77_DIM_SIZE (ndimen) = upper - lower + 1;
c5aa993b 255
c906108c 256 tmp_type = TYPE_TARGET_TYPE (tmp_type);
c5aa993b 257 ndimen++;
c906108c 258 }
c5aa993b 259
c906108c
SS
260 /* Now we multiply eltlen by all the offsets, so that later we
261 can print out array elements correctly. Up till now we
262 know an offset to apply to get the item but we also
263 have to know how much to add to get to the next item */
c5aa993b 264
c906108c 265 ndimen--;
c5aa993b 266 eltlen = TYPE_LENGTH (tmp_type);
c906108c
SS
267 F77_DIM_OFFSET (ndimen) = eltlen;
268 while (--ndimen > 0)
269 {
270 eltlen *= F77_DIM_SIZE (ndimen + 1);
271 F77_DIM_OFFSET (ndimen) = eltlen;
272 }
273}
274
b3cacbee
DL
275
276
c906108c
SS
277/* Actual function which prints out F77 arrays, Valaddr == address in
278 the superior. Address == the address in the inferior. */
7b0090c3 279
c5aa993b 280static void
fba45db2
KB
281f77_print_array_1 (int nss, int ndimensions, struct type *type, char *valaddr,
282 CORE_ADDR address, struct ui_file *stream, int format,
b3cacbee
DL
283 int deref_ref, int recurse, enum val_prettyprint pretty,
284 int *elts)
c906108c
SS
285{
286 int i;
c5aa993b 287
c906108c
SS
288 if (nss != ndimensions)
289 {
b3cacbee 290 for (i = 0; (i < F77_DIM_SIZE (nss) && (*elts) < print_max); i++)
c906108c
SS
291 {
292 fprintf_filtered (stream, "( ");
293 f77_print_array_1 (nss + 1, ndimensions, TYPE_TARGET_TYPE (type),
c5aa993b
JM
294 valaddr + i * F77_DIM_OFFSET (nss),
295 address + i * F77_DIM_OFFSET (nss),
b3cacbee 296 stream, format, deref_ref, recurse, pretty, elts);
c906108c
SS
297 fprintf_filtered (stream, ") ");
298 }
7b0090c3 299 if (*elts >= print_max && i < F77_DIM_SIZE (nss))
b3cacbee 300 fprintf_filtered (stream, "...");
c906108c
SS
301 }
302 else
303 {
7b0090c3
DL
304 for (i = 0; i < F77_DIM_SIZE (nss) && (*elts) < print_max;
305 i++, (*elts)++)
c906108c
SS
306 {
307 val_print (TYPE_TARGET_TYPE (type),
308 valaddr + i * F77_DIM_OFFSET (ndimensions),
c5aa993b 309 0,
c906108c 310 address + i * F77_DIM_OFFSET (ndimensions),
c5aa993b 311 stream, format, deref_ref, recurse, pretty);
c906108c
SS
312
313 if (i != (F77_DIM_SIZE (nss) - 1))
c5aa993b
JM
314 fprintf_filtered (stream, ", ");
315
7b0090c3 316 if ((*elts == print_max - 1) && (i != (F77_DIM_SIZE (nss) - 1)))
c906108c
SS
317 fprintf_filtered (stream, "...");
318 }
319 }
320}
321
322/* This function gets called to print an F77 array, we set up some
323 stuff and then immediately call f77_print_array_1() */
324
c5aa993b 325static void
fba45db2
KB
326f77_print_array (struct type *type, char *valaddr, CORE_ADDR address,
327 struct ui_file *stream, int format, int deref_ref, int recurse,
328 enum val_prettyprint pretty)
c906108c 329{
c5aa993b 330 int ndimensions;
b3cacbee 331 int elts = 0;
c5aa993b
JM
332
333 ndimensions = calc_f77_array_dims (type);
334
c906108c
SS
335 if (ndimensions > MAX_FORTRAN_DIMS || ndimensions < 0)
336 error ("Type node corrupt! F77 arrays cannot have %d subscripts (%d Max)",
337 ndimensions, MAX_FORTRAN_DIMS);
c5aa993b 338
c906108c
SS
339 /* Since F77 arrays are stored column-major, we set up an
340 offset table to get at the various row's elements. The
c5aa993b 341 offset table contains entries for both offset and subarray size. */
c906108c 342
c5aa993b
JM
343 f77_create_arrayprint_offset_tbl (type, stream);
344
345 f77_print_array_1 (1, ndimensions, type, valaddr, address, stream, format,
b3cacbee 346 deref_ref, recurse, pretty, &elts);
c5aa993b 347}
c906108c 348\f
c5aa993b 349
c906108c
SS
350/* Print data of type TYPE located at VALADDR (within GDB), which came from
351 the inferior at address ADDRESS, onto stdio stream STREAM according to
352 FORMAT (a letter or 0 for natural format). The data at VALADDR is in
353 target byte order.
c5aa993b 354
c906108c
SS
355 If the data are a string pointer, returns the number of string characters
356 printed.
c5aa993b 357
c906108c
SS
358 If DEREF_REF is nonzero, then dereference references, otherwise just print
359 them like pointers.
c5aa993b 360
c906108c
SS
361 The PRETTY parameter controls prettyprinting. */
362
363int
fba45db2
KB
364f_val_print (struct type *type, char *valaddr, int embedded_offset,
365 CORE_ADDR address, struct ui_file *stream, int format,
366 int deref_ref, int recurse, enum val_prettyprint pretty)
c906108c 367{
52f0bd74 368 unsigned int i = 0; /* Number of characters printed */
c906108c
SS
369 struct type *elttype;
370 LONGEST val;
371 CORE_ADDR addr;
c5aa993b 372
c906108c
SS
373 CHECK_TYPEDEF (type);
374 switch (TYPE_CODE (type))
375 {
c5aa993b 376 case TYPE_CODE_STRING:
c906108c
SS
377 f77_get_dynamic_length_of_aggregate (type);
378 LA_PRINT_STRING (stream, valaddr, TYPE_LENGTH (type), 1, 0);
379 break;
c5aa993b 380
c906108c 381 case TYPE_CODE_ARRAY:
c5aa993b
JM
382 fprintf_filtered (stream, "(");
383 f77_print_array (type, valaddr, address, stream, format,
384 deref_ref, recurse, pretty);
c906108c
SS
385 fprintf_filtered (stream, ")");
386 break;
7e86466e 387
c906108c
SS
388 case TYPE_CODE_PTR:
389 if (format && format != 's')
390 {
391 print_scalar_formatted (valaddr, type, format, 0, stream);
392 break;
393 }
394 else
395 {
396 addr = unpack_pointer (type, valaddr);
397 elttype = check_typedef (TYPE_TARGET_TYPE (type));
c5aa993b 398
c906108c
SS
399 if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
400 {
401 /* Try to print what function it points to. */
402 print_address_demangle (addr, stream, demangle);
403 /* Return value is irrelevant except for string pointers. */
404 return 0;
405 }
c5aa993b 406
c906108c 407 if (addressprint && format != 's')
7e86466e 408 print_address_numeric (addr, 1, stream);
c5aa993b 409
c906108c
SS
410 /* For a pointer to char or unsigned char, also print the string
411 pointed to, unless pointer is null. */
412 if (TYPE_LENGTH (elttype) == 1
413 && TYPE_CODE (elttype) == TYPE_CODE_INT
414 && (format == 0 || format == 's')
415 && addr != 0)
416 i = val_print_string (addr, -1, TYPE_LENGTH (elttype), stream);
c5aa993b 417
7e86466e
RH
418 /* Return number of characters printed, including the terminating
419 '\0' if we reached the end. val_print_string takes care including
420 the terminating '\0' if necessary. */
421 return i;
422 }
423 break;
424
425 case TYPE_CODE_REF:
426 elttype = check_typedef (TYPE_TARGET_TYPE (type));
427 if (addressprint)
428 {
429 CORE_ADDR addr
430 = extract_typed_address (valaddr + embedded_offset, type);
431 fprintf_filtered (stream, "@");
432 print_address_numeric (addr, 1, stream);
433 if (deref_ref)
434 fputs_filtered (": ", stream);
435 }
436 /* De-reference the reference. */
437 if (deref_ref)
438 {
439 if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
440 {
441 struct value *deref_val =
442 value_at
443 (TYPE_TARGET_TYPE (type),
444 unpack_pointer (lookup_pointer_type (builtin_type_void),
445 valaddr + embedded_offset),
446 NULL);
447 val_print (VALUE_TYPE (deref_val),
448 VALUE_CONTENTS (deref_val),
449 0,
450 VALUE_ADDRESS (deref_val),
451 stream,
452 format,
453 deref_ref,
454 recurse,
455 pretty);
456 }
457 else
458 fputs_filtered ("???", stream);
c906108c
SS
459 }
460 break;
c5aa993b 461
c906108c
SS
462 case TYPE_CODE_FUNC:
463 if (format)
464 {
465 print_scalar_formatted (valaddr, type, format, 0, stream);
466 break;
467 }
468 /* FIXME, we should consider, at least for ANSI C language, eliminating
c5aa993b 469 the distinction made between FUNCs and POINTERs to FUNCs. */
c906108c
SS
470 fprintf_filtered (stream, "{");
471 type_print (type, "", stream, -1);
472 fprintf_filtered (stream, "} ");
473 /* Try to print what function it points to, and its address. */
474 print_address_demangle (address, stream, demangle);
475 break;
c5aa993b 476
c906108c
SS
477 case TYPE_CODE_INT:
478 format = format ? format : output_format;
479 if (format)
480 print_scalar_formatted (valaddr, type, format, 0, stream);
481 else
482 {
483 val_print_type_code_int (type, valaddr, stream);
484 /* C and C++ has no single byte int type, char is used instead.
485 Since we don't know whether the value is really intended to
486 be used as an integer or a character, print the character
487 equivalent as well. */
488 if (TYPE_LENGTH (type) == 1)
489 {
490 fputs_filtered (" ", stream);
491 LA_PRINT_CHAR ((unsigned char) unpack_long (type, valaddr),
492 stream);
493 }
494 }
495 break;
c5aa993b 496
c906108c
SS
497 case TYPE_CODE_FLT:
498 if (format)
499 print_scalar_formatted (valaddr, type, format, 0, stream);
500 else
501 print_floating (valaddr, type, stream);
502 break;
c5aa993b 503
c906108c
SS
504 case TYPE_CODE_VOID:
505 fprintf_filtered (stream, "VOID");
506 break;
c5aa993b 507
c906108c
SS
508 case TYPE_CODE_ERROR:
509 fprintf_filtered (stream, "<error type>");
510 break;
c5aa993b 511
c906108c
SS
512 case TYPE_CODE_RANGE:
513 /* FIXME, we should not ever have to print one of these yet. */
514 fprintf_filtered (stream, "<range type>");
515 break;
c5aa993b 516
c906108c
SS
517 case TYPE_CODE_BOOL:
518 format = format ? format : output_format;
519 if (format)
520 print_scalar_formatted (valaddr, type, format, 0, stream);
521 else
522 {
c5aa993b
JM
523 val = 0;
524 switch (TYPE_LENGTH (type))
c906108c
SS
525 {
526 case 1:
527 val = unpack_long (builtin_type_f_logical_s1, valaddr);
c5aa993b
JM
528 break;
529
530 case 2:
c906108c 531 val = unpack_long (builtin_type_f_logical_s2, valaddr);
c5aa993b
JM
532 break;
533
534 case 4:
c906108c 535 val = unpack_long (builtin_type_f_logical, valaddr);
c5aa993b
JM
536 break;
537
c906108c
SS
538 default:
539 error ("Logicals of length %d bytes not supported",
540 TYPE_LENGTH (type));
c5aa993b 541
c906108c 542 }
c5aa993b
JM
543
544 if (val == 0)
c906108c 545 fprintf_filtered (stream, ".FALSE.");
c5aa993b
JM
546 else if (val == 1)
547 fprintf_filtered (stream, ".TRUE.");
548 else
549 /* Not a legitimate logical type, print as an integer. */
550 {
551 /* Bash the type code temporarily. */
552 TYPE_CODE (type) = TYPE_CODE_INT;
553 f_val_print (type, valaddr, 0, address, stream, format,
554 deref_ref, recurse, pretty);
555 /* Restore the type code so later uses work as intended. */
556 TYPE_CODE (type) = TYPE_CODE_BOOL;
557 }
c906108c
SS
558 }
559 break;
c5aa993b 560
c906108c
SS
561 case TYPE_CODE_COMPLEX:
562 switch (TYPE_LENGTH (type))
563 {
c5aa993b
JM
564 case 8:
565 type = builtin_type_f_real;
566 break;
567 case 16:
568 type = builtin_type_f_real_s8;
569 break;
570 case 32:
571 type = builtin_type_f_real_s16;
572 break;
c906108c 573 default:
c5aa993b 574 error ("Cannot print out complex*%d variables", TYPE_LENGTH (type));
c906108c
SS
575 }
576 fputs_filtered ("(", stream);
577 print_floating (valaddr, type, stream);
578 fputs_filtered (",", stream);
9af97293 579 print_floating (valaddr + TYPE_LENGTH (type), type, stream);
c906108c
SS
580 fputs_filtered (")", stream);
581 break;
c5aa993b 582
c906108c
SS
583 case TYPE_CODE_UNDEF:
584 /* This happens (without TYPE_FLAG_STUB set) on systems which don't use
c5aa993b
JM
585 dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
586 and no complete type for struct foo in that file. */
c906108c
SS
587 fprintf_filtered (stream, "<incomplete type>");
588 break;
c5aa993b 589
c906108c
SS
590 default:
591 error ("Invalid F77 type code %d in symbol table.", TYPE_CODE (type));
592 }
593 gdb_flush (stream);
594 return 0;
595}
596
597static void
fba45db2 598list_all_visible_commons (char *funname)
c906108c 599{
c5aa993b
JM
600 SAVED_F77_COMMON_PTR tmp;
601
c906108c 602 tmp = head_common_list;
c5aa993b 603
c906108c 604 printf_filtered ("All COMMON blocks visible at this level:\n\n");
c5aa993b 605
c906108c
SS
606 while (tmp != NULL)
607 {
762f08a3 608 if (strcmp (tmp->owning_function, funname) == 0)
c5aa993b
JM
609 printf_filtered ("%s\n", tmp->name);
610
c906108c
SS
611 tmp = tmp->next;
612 }
613}
614
615/* This function is used to print out the values in a given COMMON
616 block. It will always use the most local common block of the
c5aa993b 617 given name */
c906108c 618
c5aa993b 619static void
fba45db2 620info_common_command (char *comname, int from_tty)
c906108c 621{
c5aa993b
JM
622 SAVED_F77_COMMON_PTR the_common;
623 COMMON_ENTRY_PTR entry;
c906108c 624 struct frame_info *fi;
52f0bd74 625 char *funname = 0;
c906108c 626 struct symbol *func;
c5aa993b 627
c906108c
SS
628 /* We have been told to display the contents of F77 COMMON
629 block supposedly visible in this function. Let us
630 first make sure that it is visible and if so, let
c5aa993b
JM
631 us display its contents */
632
6e7f8b9c 633 fi = deprecated_selected_frame;
c5aa993b 634
c906108c 635 if (fi == NULL)
c5aa993b
JM
636 error ("No frame selected");
637
c906108c 638 /* The following is generally ripped off from stack.c's routine
c5aa993b
JM
639 print_frame_info() */
640
bdd78e62 641 func = find_pc_function (get_frame_pc (fi));
c906108c
SS
642 if (func)
643 {
644 /* In certain pathological cases, the symtabs give the wrong
c5aa993b
JM
645 function (when we are in the first function in a file which
646 is compiled without debugging symbols, the previous function
647 is compiled with debugging symbols, and the "foo.o" symbol
648 that is supposed to tell us where the file with debugging symbols
649 ends has been truncated by ar because it is longer than 15
650 characters).
651
652 So look in the minimal symbol tables as well, and if it comes
653 up with a larger address for the function use that instead.
654 I don't think this can ever cause any problems; there shouldn't
655 be any minimal symbols in the middle of a function.
656 FIXME: (Not necessarily true. What about text labels) */
657
bdd78e62 658 struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (get_frame_pc (fi));
c5aa993b 659
c906108c 660 if (msymbol != NULL
c5aa993b 661 && (SYMBOL_VALUE_ADDRESS (msymbol)
c906108c 662 > BLOCK_START (SYMBOL_BLOCK_VALUE (func))))
22abf04a 663 funname = DEPRECATED_SYMBOL_NAME (msymbol);
c906108c 664 else
22abf04a 665 funname = DEPRECATED_SYMBOL_NAME (func);
c906108c
SS
666 }
667 else
668 {
aa1ee363 669 struct minimal_symbol *msymbol =
bdd78e62 670 lookup_minimal_symbol_by_pc (get_frame_pc (fi));
c5aa993b 671
c906108c 672 if (msymbol != NULL)
22abf04a 673 funname = DEPRECATED_SYMBOL_NAME (msymbol);
c906108c 674 }
c5aa993b 675
c906108c 676 /* If comname is NULL, we assume the user wishes to see the
c5aa993b
JM
677 which COMMON blocks are visible here and then return */
678
c906108c
SS
679 if (comname == 0)
680 {
681 list_all_visible_commons (funname);
c5aa993b 682 return;
c906108c 683 }
c5aa993b
JM
684
685 the_common = find_common_for_function (comname, funname);
686
c906108c
SS
687 if (the_common)
688 {
762f08a3 689 if (strcmp (comname, BLANK_COMMON_NAME_LOCAL) == 0)
c906108c 690 printf_filtered ("Contents of blank COMMON block:\n");
c5aa993b
JM
691 else
692 printf_filtered ("Contents of F77 COMMON block '%s':\n", comname);
693
694 printf_filtered ("\n");
695 entry = the_common->entries;
696
c906108c
SS
697 while (entry != NULL)
698 {
22abf04a 699 printf_filtered ("%s = ", DEPRECATED_SYMBOL_NAME (entry->symbol));
c5aa993b
JM
700 print_variable_value (entry->symbol, fi, gdb_stdout);
701 printf_filtered ("\n");
702 entry = entry->next;
c906108c
SS
703 }
704 }
c5aa993b 705 else
c906108c 706 printf_filtered ("Cannot locate the common block %s in function '%s'\n",
c5aa993b 707 comname, funname);
c906108c
SS
708}
709
710/* This function is used to determine whether there is a
c5aa993b 711 F77 common block visible at the current scope called 'comname'. */
c906108c
SS
712
713#if 0
714static int
fba45db2 715there_is_a_visible_common_named (char *comname)
c906108c 716{
c5aa993b 717 SAVED_F77_COMMON_PTR the_common;
c906108c 718 struct frame_info *fi;
52f0bd74 719 char *funname = 0;
c906108c 720 struct symbol *func;
c5aa993b 721
c906108c 722 if (comname == NULL)
c5aa993b
JM
723 error ("Cannot deal with NULL common name!");
724
6e7f8b9c 725 fi = deprecated_selected_frame;
c5aa993b 726
c906108c 727 if (fi == NULL)
c5aa993b
JM
728 error ("No frame selected");
729
c906108c 730 /* The following is generally ripped off from stack.c's routine
c5aa993b
JM
731 print_frame_info() */
732
c906108c
SS
733 func = find_pc_function (fi->pc);
734 if (func)
735 {
736 /* In certain pathological cases, the symtabs give the wrong
c5aa993b
JM
737 function (when we are in the first function in a file which
738 is compiled without debugging symbols, the previous function
739 is compiled with debugging symbols, and the "foo.o" symbol
740 that is supposed to tell us where the file with debugging symbols
741 ends has been truncated by ar because it is longer than 15
742 characters).
743
744 So look in the minimal symbol tables as well, and if it comes
745 up with a larger address for the function use that instead.
746 I don't think this can ever cause any problems; there shouldn't
747 be any minimal symbols in the middle of a function.
748 FIXME: (Not necessarily true. What about text labels) */
749
c906108c 750 struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc);
c5aa993b 751
c906108c 752 if (msymbol != NULL
c5aa993b 753 && (SYMBOL_VALUE_ADDRESS (msymbol)
c906108c 754 > BLOCK_START (SYMBOL_BLOCK_VALUE (func))))
22abf04a 755 funname = DEPRECATED_SYMBOL_NAME (msymbol);
c906108c 756 else
22abf04a 757 funname = DEPRECATED_SYMBOL_NAME (func);
c906108c
SS
758 }
759 else
760 {
aa1ee363 761 struct minimal_symbol *msymbol =
c5aa993b
JM
762 lookup_minimal_symbol_by_pc (fi->pc);
763
c906108c 764 if (msymbol != NULL)
22abf04a 765 funname = DEPRECATED_SYMBOL_NAME (msymbol);
c906108c 766 }
c5aa993b
JM
767
768 the_common = find_common_for_function (comname, funname);
769
c906108c
SS
770 return (the_common ? 1 : 0);
771}
772#endif
773
774void
fba45db2 775_initialize_f_valprint (void)
c906108c
SS
776{
777 add_info ("common", info_common_command,
778 "Print out the values contained in a Fortran COMMON block.");
779 if (xdb_commands)
c5aa993b
JM
780 add_com ("lc", class_info, info_common_command,
781 "Print out the values contained in a Fortran COMMON block.");
c906108c 782}
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