2005-02-10 Andrew Cagney <cagney@gnu.org>
[deliverable/binutils-gdb.git] / gdb / f-valprint.c
CommitLineData
c906108c 1/* Support for printing Fortran values for GDB, the GNU debugger.
a2bd3dcd
AC
2
3 Copyright 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2003, 2005 Free
4 Software Foundation, Inc.
5
c906108c
SS
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
c5aa993b 9 This file is part of GDB.
c906108c 10
c5aa993b
JM
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.
c906108c 15
c5aa993b
JM
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.
c906108c 20
c5aa993b
JM
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., 59 Temple Place - Suite 330,
24 Boston, MA 02111-1307, USA. */
c906108c
SS
25
26#include "defs.h"
27#include "gdb_string.h"
28#include "symtab.h"
29#include "gdbtypes.h"
30#include "expression.h"
31#include "value.h"
c906108c
SS
32#include "valprint.h"
33#include "language.h"
c5aa993b 34#include "f-lang.h"
c906108c
SS
35#include "frame.h"
36#include "gdbcore.h"
37#include "command.h"
fe898f56 38#include "block.h"
c906108c
SS
39
40#if 0
a14ed312 41static int there_is_a_visible_common_named (char *);
c906108c
SS
42#endif
43
a14ed312
KB
44extern void _initialize_f_valprint (void);
45static void info_common_command (char *, int);
46static void list_all_visible_commons (char *);
d9fcf2fb
JM
47static void f77_create_arrayprint_offset_tbl (struct type *,
48 struct ui_file *);
a14ed312 49static void f77_get_dynamic_length_of_aggregate (struct type *);
c906108c 50
c5aa993b 51int f77_array_offset_tbl[MAX_FORTRAN_DIMS + 1][2];
c906108c
SS
52
53/* Array which holds offsets to be applied to get a row's elements
54 for a given array. Array also holds the size of each subarray. */
55
56/* The following macro gives us the size of the nth dimension, Where
c5aa993b 57 n is 1 based. */
c906108c
SS
58
59#define F77_DIM_SIZE(n) (f77_array_offset_tbl[n][1])
60
c5aa993b 61/* The following gives us the offset for row n where n is 1-based. */
c906108c
SS
62
63#define F77_DIM_OFFSET(n) (f77_array_offset_tbl[n][0])
64
c5aa993b 65int
fba45db2 66f77_get_dynamic_lowerbound (struct type *type, int *lower_bound)
c906108c 67{
c5aa993b
JM
68 CORE_ADDR current_frame_addr;
69 CORE_ADDR ptr_to_lower_bound;
70
c906108c
SS
71 switch (TYPE_ARRAY_LOWER_BOUND_TYPE (type))
72 {
73 case BOUND_BY_VALUE_ON_STACK:
8b36eed8 74 current_frame_addr = get_frame_base (deprecated_selected_frame);
c5aa993b 75 if (current_frame_addr > 0)
c906108c 76 {
c5aa993b
JM
77 *lower_bound =
78 read_memory_integer (current_frame_addr +
c906108c
SS
79 TYPE_ARRAY_LOWER_BOUND_VALUE (type),
80 4);
81 }
82 else
83 {
c5aa993b
JM
84 *lower_bound = DEFAULT_LOWER_BOUND;
85 return BOUND_FETCH_ERROR;
c906108c 86 }
c5aa993b
JM
87 break;
88
c906108c
SS
89 case BOUND_SIMPLE:
90 *lower_bound = TYPE_ARRAY_LOWER_BOUND_VALUE (type);
c5aa993b
JM
91 break;
92
93 case BOUND_CANNOT_BE_DETERMINED:
8a3fe4f8 94 error (_("Lower bound may not be '*' in F77"));
c5aa993b
JM
95 break;
96
c906108c 97 case BOUND_BY_REF_ON_STACK:
8b36eed8 98 current_frame_addr = get_frame_base (deprecated_selected_frame);
c5aa993b 99 if (current_frame_addr > 0)
c906108c 100 {
c5aa993b 101 ptr_to_lower_bound =
0d540cdf
KD
102 read_memory_typed_address (current_frame_addr +
103 TYPE_ARRAY_LOWER_BOUND_VALUE (type),
104 builtin_type_void_data_ptr);
c5aa993b 105 *lower_bound = read_memory_integer (ptr_to_lower_bound, 4);
c906108c
SS
106 }
107 else
108 {
c5aa993b
JM
109 *lower_bound = DEFAULT_LOWER_BOUND;
110 return BOUND_FETCH_ERROR;
c906108c 111 }
c5aa993b
JM
112 break;
113
114 case BOUND_BY_REF_IN_REG:
115 case BOUND_BY_VALUE_IN_REG:
116 default:
8a3fe4f8 117 error (_("??? unhandled dynamic array bound type ???"));
c5aa993b 118 break;
c906108c
SS
119 }
120 return BOUND_FETCH_OK;
121}
122
c5aa993b 123int
fba45db2 124f77_get_dynamic_upperbound (struct type *type, int *upper_bound)
c906108c
SS
125{
126 CORE_ADDR current_frame_addr = 0;
c5aa993b
JM
127 CORE_ADDR ptr_to_upper_bound;
128
c906108c
SS
129 switch (TYPE_ARRAY_UPPER_BOUND_TYPE (type))
130 {
131 case BOUND_BY_VALUE_ON_STACK:
8b36eed8 132 current_frame_addr = get_frame_base (deprecated_selected_frame);
c5aa993b 133 if (current_frame_addr > 0)
c906108c 134 {
c5aa993b
JM
135 *upper_bound =
136 read_memory_integer (current_frame_addr +
c906108c
SS
137 TYPE_ARRAY_UPPER_BOUND_VALUE (type),
138 4);
139 }
140 else
141 {
c5aa993b
JM
142 *upper_bound = DEFAULT_UPPER_BOUND;
143 return BOUND_FETCH_ERROR;
c906108c 144 }
c5aa993b
JM
145 break;
146
c906108c
SS
147 case BOUND_SIMPLE:
148 *upper_bound = TYPE_ARRAY_UPPER_BOUND_VALUE (type);
c5aa993b
JM
149 break;
150
151 case BOUND_CANNOT_BE_DETERMINED:
c906108c 152 /* we have an assumed size array on our hands. Assume that
c5aa993b
JM
153 upper_bound == lower_bound so that we show at least
154 1 element.If the user wants to see more elements, let
155 him manually ask for 'em and we'll subscript the
156 array and show him */
c906108c 157 f77_get_dynamic_lowerbound (type, upper_bound);
c5aa993b
JM
158 break;
159
c906108c 160 case BOUND_BY_REF_ON_STACK:
8b36eed8 161 current_frame_addr = get_frame_base (deprecated_selected_frame);
c5aa993b 162 if (current_frame_addr > 0)
c906108c 163 {
c5aa993b 164 ptr_to_upper_bound =
0d540cdf
KD
165 read_memory_typed_address (current_frame_addr +
166 TYPE_ARRAY_UPPER_BOUND_VALUE (type),
167 builtin_type_void_data_ptr);
c5aa993b 168 *upper_bound = read_memory_integer (ptr_to_upper_bound, 4);
c906108c
SS
169 }
170 else
171 {
c5aa993b 172 *upper_bound = DEFAULT_UPPER_BOUND;
c906108c
SS
173 return BOUND_FETCH_ERROR;
174 }
c5aa993b
JM
175 break;
176
177 case BOUND_BY_REF_IN_REG:
178 case BOUND_BY_VALUE_IN_REG:
179 default:
8a3fe4f8 180 error (_("??? unhandled dynamic array bound type ???"));
c5aa993b 181 break;
c906108c
SS
182 }
183 return BOUND_FETCH_OK;
184}
185
c5aa993b 186/* Obtain F77 adjustable array dimensions */
c906108c
SS
187
188static void
fba45db2 189f77_get_dynamic_length_of_aggregate (struct type *type)
c906108c
SS
190{
191 int upper_bound = -1;
c5aa993b
JM
192 int lower_bound = 1;
193 int retcode;
194
c906108c
SS
195 /* Recursively go all the way down into a possibly multi-dimensional
196 F77 array and get the bounds. For simple arrays, this is pretty
197 easy but when the bounds are dynamic, we must be very careful
198 to add up all the lengths correctly. Not doing this right
199 will lead to horrendous-looking arrays in parameter lists.
c5aa993b 200
c906108c 201 This function also works for strings which behave very
c5aa993b
JM
202 similarly to arrays. */
203
204 if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY
205 || TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRING)
c906108c 206 f77_get_dynamic_length_of_aggregate (TYPE_TARGET_TYPE (type));
c5aa993b
JM
207
208 /* Recursion ends here, start setting up lengths. */
209 retcode = f77_get_dynamic_lowerbound (type, &lower_bound);
c906108c 210 if (retcode == BOUND_FETCH_ERROR)
8a3fe4f8 211 error (_("Cannot obtain valid array lower bound"));
c5aa993b
JM
212
213 retcode = f77_get_dynamic_upperbound (type, &upper_bound);
c906108c 214 if (retcode == BOUND_FETCH_ERROR)
8a3fe4f8 215 error (_("Cannot obtain valid array upper bound"));
c5aa993b
JM
216
217 /* Patch in a valid length value. */
218
c906108c
SS
219 TYPE_LENGTH (type) =
220 (upper_bound - lower_bound + 1) * TYPE_LENGTH (check_typedef (TYPE_TARGET_TYPE (type)));
c5aa993b 221}
c906108c
SS
222
223/* Function that sets up the array offset,size table for the array
c5aa993b 224 type "type". */
c906108c 225
c5aa993b 226static void
fba45db2 227f77_create_arrayprint_offset_tbl (struct type *type, struct ui_file *stream)
c906108c
SS
228{
229 struct type *tmp_type;
230 int eltlen;
231 int ndimen = 1;
c5aa993b
JM
232 int upper, lower, retcode;
233
234 tmp_type = type;
235
236 while ((TYPE_CODE (tmp_type) == TYPE_CODE_ARRAY))
c906108c
SS
237 {
238 if (TYPE_ARRAY_UPPER_BOUND_TYPE (tmp_type) == BOUND_CANNOT_BE_DETERMINED)
c5aa993b
JM
239 fprintf_filtered (stream, "<assumed size array> ");
240
c906108c
SS
241 retcode = f77_get_dynamic_upperbound (tmp_type, &upper);
242 if (retcode == BOUND_FETCH_ERROR)
8a3fe4f8 243 error (_("Cannot obtain dynamic upper bound"));
c5aa993b
JM
244
245 retcode = f77_get_dynamic_lowerbound (tmp_type, &lower);
c906108c 246 if (retcode == BOUND_FETCH_ERROR)
8a3fe4f8 247 error (_("Cannot obtain dynamic lower bound"));
c5aa993b 248
c906108c 249 F77_DIM_SIZE (ndimen) = upper - lower + 1;
c5aa993b 250
c906108c 251 tmp_type = TYPE_TARGET_TYPE (tmp_type);
c5aa993b 252 ndimen++;
c906108c 253 }
c5aa993b 254
c906108c
SS
255 /* Now we multiply eltlen by all the offsets, so that later we
256 can print out array elements correctly. Up till now we
257 know an offset to apply to get the item but we also
258 have to know how much to add to get to the next item */
c5aa993b 259
c906108c 260 ndimen--;
c5aa993b 261 eltlen = TYPE_LENGTH (tmp_type);
c906108c
SS
262 F77_DIM_OFFSET (ndimen) = eltlen;
263 while (--ndimen > 0)
264 {
265 eltlen *= F77_DIM_SIZE (ndimen + 1);
266 F77_DIM_OFFSET (ndimen) = eltlen;
267 }
268}
269
b3cacbee
DL
270
271
c906108c
SS
272/* Actual function which prints out F77 arrays, Valaddr == address in
273 the superior. Address == the address in the inferior. */
7b0090c3 274
c5aa993b 275static void
a2bd3dcd
AC
276f77_print_array_1 (int nss, int ndimensions, struct type *type,
277 const bfd_byte *valaddr, CORE_ADDR address,
278 struct ui_file *stream, int format,
b3cacbee
DL
279 int deref_ref, int recurse, enum val_prettyprint pretty,
280 int *elts)
c906108c
SS
281{
282 int i;
c5aa993b 283
c906108c
SS
284 if (nss != ndimensions)
285 {
b3cacbee 286 for (i = 0; (i < F77_DIM_SIZE (nss) && (*elts) < print_max); i++)
c906108c
SS
287 {
288 fprintf_filtered (stream, "( ");
289 f77_print_array_1 (nss + 1, ndimensions, TYPE_TARGET_TYPE (type),
c5aa993b
JM
290 valaddr + i * F77_DIM_OFFSET (nss),
291 address + i * F77_DIM_OFFSET (nss),
b3cacbee 292 stream, format, deref_ref, recurse, pretty, elts);
c906108c
SS
293 fprintf_filtered (stream, ") ");
294 }
7b0090c3 295 if (*elts >= print_max && i < F77_DIM_SIZE (nss))
b3cacbee 296 fprintf_filtered (stream, "...");
c906108c
SS
297 }
298 else
299 {
7b0090c3
DL
300 for (i = 0; i < F77_DIM_SIZE (nss) && (*elts) < print_max;
301 i++, (*elts)++)
c906108c
SS
302 {
303 val_print (TYPE_TARGET_TYPE (type),
304 valaddr + i * F77_DIM_OFFSET (ndimensions),
c5aa993b 305 0,
c906108c 306 address + i * F77_DIM_OFFSET (ndimensions),
c5aa993b 307 stream, format, deref_ref, recurse, pretty);
c906108c
SS
308
309 if (i != (F77_DIM_SIZE (nss) - 1))
c5aa993b
JM
310 fprintf_filtered (stream, ", ");
311
7b0090c3 312 if ((*elts == print_max - 1) && (i != (F77_DIM_SIZE (nss) - 1)))
c906108c
SS
313 fprintf_filtered (stream, "...");
314 }
315 }
316}
317
318/* This function gets called to print an F77 array, we set up some
319 stuff and then immediately call f77_print_array_1() */
320
c5aa993b 321static void
a2bd3dcd
AC
322f77_print_array (struct type *type, const bfd_byte *valaddr,
323 CORE_ADDR address, struct ui_file *stream,
324 int format, int deref_ref, int recurse,
fba45db2 325 enum val_prettyprint pretty)
c906108c 326{
c5aa993b 327 int ndimensions;
b3cacbee 328 int elts = 0;
c5aa993b
JM
329
330 ndimensions = calc_f77_array_dims (type);
331
c906108c 332 if (ndimensions > MAX_FORTRAN_DIMS || ndimensions < 0)
8a3fe4f8 333 error (_("Type node corrupt! F77 arrays cannot have %d subscripts (%d Max)"),
c906108c 334 ndimensions, MAX_FORTRAN_DIMS);
c5aa993b 335
c906108c
SS
336 /* Since F77 arrays are stored column-major, we set up an
337 offset table to get at the various row's elements. The
c5aa993b 338 offset table contains entries for both offset and subarray size. */
c906108c 339
c5aa993b
JM
340 f77_create_arrayprint_offset_tbl (type, stream);
341
342 f77_print_array_1 (1, ndimensions, type, valaddr, address, stream, format,
b3cacbee 343 deref_ref, recurse, pretty, &elts);
c5aa993b 344}
c906108c 345\f
c5aa993b 346
c906108c
SS
347/* Print data of type TYPE located at VALADDR (within GDB), which came from
348 the inferior at address ADDRESS, onto stdio stream STREAM according to
349 FORMAT (a letter or 0 for natural format). The data at VALADDR is in
350 target byte order.
c5aa993b 351
c906108c
SS
352 If the data are a string pointer, returns the number of string characters
353 printed.
c5aa993b 354
c906108c
SS
355 If DEREF_REF is nonzero, then dereference references, otherwise just print
356 them like pointers.
c5aa993b 357
c906108c
SS
358 The PRETTY parameter controls prettyprinting. */
359
360int
a2bd3dcd 361f_val_print (struct type *type, const bfd_byte *valaddr, int embedded_offset,
fba45db2
KB
362 CORE_ADDR address, struct ui_file *stream, int format,
363 int deref_ref, int recurse, enum val_prettyprint pretty)
c906108c 364{
52f0bd74 365 unsigned int i = 0; /* Number of characters printed */
c906108c
SS
366 struct type *elttype;
367 LONGEST val;
368 CORE_ADDR addr;
c5aa993b 369
c906108c
SS
370 CHECK_TYPEDEF (type);
371 switch (TYPE_CODE (type))
372 {
c5aa993b 373 case TYPE_CODE_STRING:
c906108c
SS
374 f77_get_dynamic_length_of_aggregate (type);
375 LA_PRINT_STRING (stream, valaddr, TYPE_LENGTH (type), 1, 0);
376 break;
c5aa993b 377
c906108c 378 case TYPE_CODE_ARRAY:
c5aa993b
JM
379 fprintf_filtered (stream, "(");
380 f77_print_array (type, valaddr, address, stream, format,
381 deref_ref, recurse, pretty);
c906108c
SS
382 fprintf_filtered (stream, ")");
383 break;
7e86466e 384
c906108c
SS
385 case TYPE_CODE_PTR:
386 if (format && format != 's')
387 {
388 print_scalar_formatted (valaddr, type, format, 0, stream);
389 break;
390 }
391 else
392 {
393 addr = unpack_pointer (type, valaddr);
394 elttype = check_typedef (TYPE_TARGET_TYPE (type));
c5aa993b 395
c906108c
SS
396 if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
397 {
398 /* Try to print what function it points to. */
399 print_address_demangle (addr, stream, demangle);
400 /* Return value is irrelevant except for string pointers. */
401 return 0;
402 }
c5aa993b 403
c906108c 404 if (addressprint && format != 's')
7e86466e 405 print_address_numeric (addr, 1, stream);
c5aa993b 406
c906108c
SS
407 /* For a pointer to char or unsigned char, also print the string
408 pointed to, unless pointer is null. */
409 if (TYPE_LENGTH (elttype) == 1
410 && TYPE_CODE (elttype) == TYPE_CODE_INT
411 && (format == 0 || format == 's')
412 && addr != 0)
413 i = val_print_string (addr, -1, TYPE_LENGTH (elttype), stream);
c5aa993b 414
7e86466e
RH
415 /* Return number of characters printed, including the terminating
416 '\0' if we reached the end. val_print_string takes care including
417 the terminating '\0' if necessary. */
418 return i;
419 }
420 break;
421
422 case TYPE_CODE_REF:
423 elttype = check_typedef (TYPE_TARGET_TYPE (type));
424 if (addressprint)
425 {
426 CORE_ADDR addr
427 = extract_typed_address (valaddr + embedded_offset, type);
428 fprintf_filtered (stream, "@");
429 print_address_numeric (addr, 1, stream);
430 if (deref_ref)
431 fputs_filtered (": ", stream);
432 }
433 /* De-reference the reference. */
434 if (deref_ref)
435 {
436 if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
437 {
438 struct value *deref_val =
439 value_at
440 (TYPE_TARGET_TYPE (type),
441 unpack_pointer (lookup_pointer_type (builtin_type_void),
00a4c844 442 valaddr + embedded_offset));
df407dfe 443 val_print (value_type (deref_val),
0fd88904 444 value_contents (deref_val),
7e86466e
RH
445 0,
446 VALUE_ADDRESS (deref_val),
447 stream,
448 format,
449 deref_ref,
450 recurse,
451 pretty);
452 }
453 else
454 fputs_filtered ("???", stream);
c906108c
SS
455 }
456 break;
c5aa993b 457
c906108c
SS
458 case TYPE_CODE_FUNC:
459 if (format)
460 {
461 print_scalar_formatted (valaddr, type, format, 0, stream);
462 break;
463 }
464 /* FIXME, we should consider, at least for ANSI C language, eliminating
c5aa993b 465 the distinction made between FUNCs and POINTERs to FUNCs. */
c906108c
SS
466 fprintf_filtered (stream, "{");
467 type_print (type, "", stream, -1);
468 fprintf_filtered (stream, "} ");
469 /* Try to print what function it points to, and its address. */
470 print_address_demangle (address, stream, demangle);
471 break;
c5aa993b 472
c906108c
SS
473 case TYPE_CODE_INT:
474 format = format ? format : output_format;
475 if (format)
476 print_scalar_formatted (valaddr, type, format, 0, stream);
477 else
478 {
479 val_print_type_code_int (type, valaddr, stream);
480 /* C and C++ has no single byte int type, char is used instead.
481 Since we don't know whether the value is really intended to
482 be used as an integer or a character, print the character
483 equivalent as well. */
484 if (TYPE_LENGTH (type) == 1)
485 {
486 fputs_filtered (" ", stream);
487 LA_PRINT_CHAR ((unsigned char) unpack_long (type, valaddr),
488 stream);
489 }
490 }
491 break;
c5aa993b 492
c906108c
SS
493 case TYPE_CODE_FLT:
494 if (format)
495 print_scalar_formatted (valaddr, type, format, 0, stream);
496 else
497 print_floating (valaddr, type, stream);
498 break;
c5aa993b 499
c906108c
SS
500 case TYPE_CODE_VOID:
501 fprintf_filtered (stream, "VOID");
502 break;
c5aa993b 503
c906108c
SS
504 case TYPE_CODE_ERROR:
505 fprintf_filtered (stream, "<error type>");
506 break;
c5aa993b 507
c906108c
SS
508 case TYPE_CODE_RANGE:
509 /* FIXME, we should not ever have to print one of these yet. */
510 fprintf_filtered (stream, "<range type>");
511 break;
c5aa993b 512
c906108c
SS
513 case TYPE_CODE_BOOL:
514 format = format ? format : output_format;
515 if (format)
516 print_scalar_formatted (valaddr, type, format, 0, stream);
517 else
518 {
c5aa993b
JM
519 val = 0;
520 switch (TYPE_LENGTH (type))
c906108c
SS
521 {
522 case 1:
523 val = unpack_long (builtin_type_f_logical_s1, valaddr);
c5aa993b
JM
524 break;
525
526 case 2:
c906108c 527 val = unpack_long (builtin_type_f_logical_s2, valaddr);
c5aa993b
JM
528 break;
529
530 case 4:
c906108c 531 val = unpack_long (builtin_type_f_logical, valaddr);
c5aa993b
JM
532 break;
533
c906108c 534 default:
8a3fe4f8 535 error (_("Logicals of length %d bytes not supported"),
c906108c 536 TYPE_LENGTH (type));
c5aa993b 537
c906108c 538 }
c5aa993b
JM
539
540 if (val == 0)
c906108c 541 fprintf_filtered (stream, ".FALSE.");
c5aa993b
JM
542 else if (val == 1)
543 fprintf_filtered (stream, ".TRUE.");
544 else
545 /* Not a legitimate logical type, print as an integer. */
546 {
547 /* Bash the type code temporarily. */
548 TYPE_CODE (type) = TYPE_CODE_INT;
549 f_val_print (type, valaddr, 0, address, stream, format,
550 deref_ref, recurse, pretty);
551 /* Restore the type code so later uses work as intended. */
552 TYPE_CODE (type) = TYPE_CODE_BOOL;
553 }
c906108c
SS
554 }
555 break;
c5aa993b 556
c906108c
SS
557 case TYPE_CODE_COMPLEX:
558 switch (TYPE_LENGTH (type))
559 {
c5aa993b
JM
560 case 8:
561 type = builtin_type_f_real;
562 break;
563 case 16:
564 type = builtin_type_f_real_s8;
565 break;
566 case 32:
567 type = builtin_type_f_real_s16;
568 break;
c906108c 569 default:
8a3fe4f8 570 error (_("Cannot print out complex*%d variables"), TYPE_LENGTH (type));
c906108c
SS
571 }
572 fputs_filtered ("(", stream);
573 print_floating (valaddr, type, stream);
574 fputs_filtered (",", stream);
9af97293 575 print_floating (valaddr + TYPE_LENGTH (type), type, stream);
c906108c
SS
576 fputs_filtered (")", stream);
577 break;
c5aa993b 578
c906108c
SS
579 case TYPE_CODE_UNDEF:
580 /* This happens (without TYPE_FLAG_STUB set) on systems which don't use
c5aa993b
JM
581 dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
582 and no complete type for struct foo in that file. */
c906108c
SS
583 fprintf_filtered (stream, "<incomplete type>");
584 break;
c5aa993b 585
c906108c 586 default:
8a3fe4f8 587 error (_("Invalid F77 type code %d in symbol table."), TYPE_CODE (type));
c906108c
SS
588 }
589 gdb_flush (stream);
590 return 0;
591}
592
593static void
fba45db2 594list_all_visible_commons (char *funname)
c906108c 595{
c5aa993b
JM
596 SAVED_F77_COMMON_PTR tmp;
597
c906108c 598 tmp = head_common_list;
c5aa993b 599
c906108c 600 printf_filtered ("All COMMON blocks visible at this level:\n\n");
c5aa993b 601
c906108c
SS
602 while (tmp != NULL)
603 {
762f08a3 604 if (strcmp (tmp->owning_function, funname) == 0)
c5aa993b
JM
605 printf_filtered ("%s\n", tmp->name);
606
c906108c
SS
607 tmp = tmp->next;
608 }
609}
610
611/* This function is used to print out the values in a given COMMON
612 block. It will always use the most local common block of the
c5aa993b 613 given name */
c906108c 614
c5aa993b 615static void
fba45db2 616info_common_command (char *comname, int from_tty)
c906108c 617{
c5aa993b
JM
618 SAVED_F77_COMMON_PTR the_common;
619 COMMON_ENTRY_PTR entry;
c906108c 620 struct frame_info *fi;
52f0bd74 621 char *funname = 0;
c906108c 622 struct symbol *func;
c5aa993b 623
c906108c
SS
624 /* We have been told to display the contents of F77 COMMON
625 block supposedly visible in this function. Let us
626 first make sure that it is visible and if so, let
c5aa993b
JM
627 us display its contents */
628
6e7f8b9c 629 fi = deprecated_selected_frame;
c5aa993b 630
c906108c 631 if (fi == NULL)
8a3fe4f8 632 error (_("No frame selected"));
c5aa993b 633
c906108c 634 /* The following is generally ripped off from stack.c's routine
c5aa993b
JM
635 print_frame_info() */
636
bdd78e62 637 func = find_pc_function (get_frame_pc (fi));
c906108c
SS
638 if (func)
639 {
640 /* In certain pathological cases, the symtabs give the wrong
c5aa993b
JM
641 function (when we are in the first function in a file which
642 is compiled without debugging symbols, the previous function
643 is compiled with debugging symbols, and the "foo.o" symbol
644 that is supposed to tell us where the file with debugging symbols
645 ends has been truncated by ar because it is longer than 15
646 characters).
647
648 So look in the minimal symbol tables as well, and if it comes
649 up with a larger address for the function use that instead.
650 I don't think this can ever cause any problems; there shouldn't
651 be any minimal symbols in the middle of a function.
652 FIXME: (Not necessarily true. What about text labels) */
653
bdd78e62 654 struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (get_frame_pc (fi));
c5aa993b 655
c906108c 656 if (msymbol != NULL
c5aa993b 657 && (SYMBOL_VALUE_ADDRESS (msymbol)
c906108c 658 > BLOCK_START (SYMBOL_BLOCK_VALUE (func))))
22abf04a 659 funname = DEPRECATED_SYMBOL_NAME (msymbol);
c906108c 660 else
22abf04a 661 funname = DEPRECATED_SYMBOL_NAME (func);
c906108c
SS
662 }
663 else
664 {
aa1ee363 665 struct minimal_symbol *msymbol =
bdd78e62 666 lookup_minimal_symbol_by_pc (get_frame_pc (fi));
c5aa993b 667
c906108c 668 if (msymbol != NULL)
22abf04a 669 funname = DEPRECATED_SYMBOL_NAME (msymbol);
c906108c 670 }
c5aa993b 671
c906108c 672 /* If comname is NULL, we assume the user wishes to see the
c5aa993b
JM
673 which COMMON blocks are visible here and then return */
674
c906108c
SS
675 if (comname == 0)
676 {
677 list_all_visible_commons (funname);
c5aa993b 678 return;
c906108c 679 }
c5aa993b
JM
680
681 the_common = find_common_for_function (comname, funname);
682
c906108c
SS
683 if (the_common)
684 {
762f08a3 685 if (strcmp (comname, BLANK_COMMON_NAME_LOCAL) == 0)
c906108c 686 printf_filtered ("Contents of blank COMMON block:\n");
c5aa993b
JM
687 else
688 printf_filtered ("Contents of F77 COMMON block '%s':\n", comname);
689
690 printf_filtered ("\n");
691 entry = the_common->entries;
692
c906108c
SS
693 while (entry != NULL)
694 {
22abf04a 695 printf_filtered ("%s = ", DEPRECATED_SYMBOL_NAME (entry->symbol));
c5aa993b
JM
696 print_variable_value (entry->symbol, fi, gdb_stdout);
697 printf_filtered ("\n");
698 entry = entry->next;
c906108c
SS
699 }
700 }
c5aa993b 701 else
c906108c 702 printf_filtered ("Cannot locate the common block %s in function '%s'\n",
c5aa993b 703 comname, funname);
c906108c
SS
704}
705
706/* This function is used to determine whether there is a
c5aa993b 707 F77 common block visible at the current scope called 'comname'. */
c906108c
SS
708
709#if 0
710static int
fba45db2 711there_is_a_visible_common_named (char *comname)
c906108c 712{
c5aa993b 713 SAVED_F77_COMMON_PTR the_common;
c906108c 714 struct frame_info *fi;
52f0bd74 715 char *funname = 0;
c906108c 716 struct symbol *func;
c5aa993b 717
c906108c 718 if (comname == NULL)
8a3fe4f8 719 error (_("Cannot deal with NULL common name!"));
c5aa993b 720
6e7f8b9c 721 fi = deprecated_selected_frame;
c5aa993b 722
c906108c 723 if (fi == NULL)
8a3fe4f8 724 error (_("No frame selected"));
c5aa993b 725
c906108c 726 /* The following is generally ripped off from stack.c's routine
c5aa993b
JM
727 print_frame_info() */
728
c906108c
SS
729 func = find_pc_function (fi->pc);
730 if (func)
731 {
732 /* In certain pathological cases, the symtabs give the wrong
c5aa993b
JM
733 function (when we are in the first function in a file which
734 is compiled without debugging symbols, the previous function
735 is compiled with debugging symbols, and the "foo.o" symbol
736 that is supposed to tell us where the file with debugging symbols
737 ends has been truncated by ar because it is longer than 15
738 characters).
739
740 So look in the minimal symbol tables as well, and if it comes
741 up with a larger address for the function use that instead.
742 I don't think this can ever cause any problems; there shouldn't
743 be any minimal symbols in the middle of a function.
744 FIXME: (Not necessarily true. What about text labels) */
745
c906108c 746 struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc);
c5aa993b 747
c906108c 748 if (msymbol != NULL
c5aa993b 749 && (SYMBOL_VALUE_ADDRESS (msymbol)
c906108c 750 > BLOCK_START (SYMBOL_BLOCK_VALUE (func))))
22abf04a 751 funname = DEPRECATED_SYMBOL_NAME (msymbol);
c906108c 752 else
22abf04a 753 funname = DEPRECATED_SYMBOL_NAME (func);
c906108c
SS
754 }
755 else
756 {
aa1ee363 757 struct minimal_symbol *msymbol =
c5aa993b
JM
758 lookup_minimal_symbol_by_pc (fi->pc);
759
c906108c 760 if (msymbol != NULL)
22abf04a 761 funname = DEPRECATED_SYMBOL_NAME (msymbol);
c906108c 762 }
c5aa993b
JM
763
764 the_common = find_common_for_function (comname, funname);
765
c906108c
SS
766 return (the_common ? 1 : 0);
767}
768#endif
769
770void
fba45db2 771_initialize_f_valprint (void)
c906108c
SS
772{
773 add_info ("common", info_common_command,
774 "Print out the values contained in a Fortran COMMON block.");
775 if (xdb_commands)
c5aa993b
JM
776 add_com ("lc", class_info, info_common_command,
777 "Print out the values contained in a Fortran COMMON block.");
c906108c 778}
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