1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480
|
/* Support for printing Fortran values for GDB, the GNU debugger.
Copyright (C) 1993-2018 Free Software Foundation, Inc.
Contributed by Motorola. Adapted from the C definitions by Farooq Butt
(fmbutt@engage.sps.mot.com), additionally worked over by Stan Shebs.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "expression.h"
#include "value.h"
#include "valprint.h"
#include "language.h"
#include "f-lang.h"
#include "frame.h"
#include "gdbcore.h"
#include "command.h"
#include "block.h"
#include "dictionary.h"
static void f77_get_dynamic_length_of_aggregate (struct type *);
int f77_array_offset_tbl[MAX_FORTRAN_DIMS + 1][2];
/* Array which holds offsets to be applied to get a row's elements
for a given array. Array also holds the size of each subarray. */
int
f77_get_lowerbound (struct type *type)
{
if (TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type))
error (_("Lower bound may not be '*' in F77"));
return TYPE_ARRAY_LOWER_BOUND_VALUE (type);
}
int
f77_get_upperbound (struct type *type)
{
if (TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))
{
/* We have an assumed size array on our hands. Assume that
upper_bound == lower_bound so that we show at least 1 element.
If the user wants to see more elements, let him manually ask for 'em
and we'll subscript the array and show him. */
return f77_get_lowerbound (type);
}
return TYPE_ARRAY_UPPER_BOUND_VALUE (type);
}
/* Obtain F77 adjustable array dimensions. */
static void
f77_get_dynamic_length_of_aggregate (struct type *type)
{
int upper_bound = -1;
int lower_bound = 1;
/* Recursively go all the way down into a possibly multi-dimensional
F77 array and get the bounds. For simple arrays, this is pretty
easy but when the bounds are dynamic, we must be very careful
to add up all the lengths correctly. Not doing this right
will lead to horrendous-looking arrays in parameter lists.
This function also works for strings which behave very
similarly to arrays. */
if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY
|| TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRING)
f77_get_dynamic_length_of_aggregate (TYPE_TARGET_TYPE (type));
/* Recursion ends here, start setting up lengths. */
lower_bound = f77_get_lowerbound (type);
upper_bound = f77_get_upperbound (type);
/* Patch in a valid length value. */
TYPE_LENGTH (type) =
(upper_bound - lower_bound + 1)
* TYPE_LENGTH (check_typedef (TYPE_TARGET_TYPE (type)));
}
/* Actual function which prints out F77 arrays, Valaddr == address in
the superior. Address == the address in the inferior. */
static void
f77_print_array_1 (int nss, int ndimensions, struct type *type,
const gdb_byte *valaddr,
int embedded_offset, CORE_ADDR address,
struct ui_file *stream, int recurse,
const struct value *val,
const struct value_print_options *options,
int *elts)
{
struct type *range_type = TYPE_INDEX_TYPE (check_typedef (type));
CORE_ADDR addr = address + embedded_offset;
LONGEST lowerbound, upperbound;
int i;
get_discrete_bounds (range_type, &lowerbound, &upperbound);
if (nss != ndimensions)
{
size_t dim_size = TYPE_LENGTH (TYPE_TARGET_TYPE (type));
size_t offs = 0;
for (i = lowerbound;
(i < upperbound + 1 && (*elts) < options->print_max);
i++)
{
struct value *subarray = value_from_contents_and_address
(TYPE_TARGET_TYPE (type), value_contents_for_printing_const (val)
+ offs, addr + offs);
fprintf_filtered (stream, "( ");
f77_print_array_1 (nss + 1, ndimensions, value_type (subarray),
value_contents_for_printing (subarray),
value_embedded_offset (subarray),
value_address (subarray),
stream, recurse, subarray, options, elts);
offs += dim_size;
fprintf_filtered (stream, ") ");
}
if (*elts >= options->print_max && i < upperbound)
fprintf_filtered (stream, "...");
}
else
{
for (i = lowerbound; i < upperbound + 1 && (*elts) < options->print_max;
i++, (*elts)++)
{
struct value *elt = value_subscript ((struct value *)val, i);
val_print (value_type (elt),
value_embedded_offset (elt),
value_address (elt), stream, recurse,
elt, options, current_language);
if (i != upperbound)
fprintf_filtered (stream, ", ");
if ((*elts == options->print_max - 1)
&& (i != upperbound))
fprintf_filtered (stream, "...");
}
}
}
/* This function gets called to print an F77 array, we set up some
stuff and then immediately call f77_print_array_1(). */
static void
f77_print_array (struct type *type, const gdb_byte *valaddr,
int embedded_offset,
CORE_ADDR address, struct ui_file *stream,
int recurse,
const struct value *val,
const struct value_print_options *options)
{
int ndimensions;
int elts = 0;
ndimensions = calc_f77_array_dims (type);
if (ndimensions > MAX_FORTRAN_DIMS || ndimensions < 0)
error (_("\
Type node corrupt! F77 arrays cannot have %d subscripts (%d Max)"),
ndimensions, MAX_FORTRAN_DIMS);
f77_print_array_1 (1, ndimensions, type, valaddr, embedded_offset,
address, stream, recurse, val, options, &elts);
}
/* Decorations for Fortran. */
static const struct generic_val_print_decorations f_decorations =
{
"(",
",",
")",
".TRUE.",
".FALSE.",
"VOID",
"{",
"}"
};
/* See val_print for a description of the various parameters of this
function; they are identical. */
void
f_val_print (struct type *type, int embedded_offset,
CORE_ADDR address, struct ui_file *stream, int recurse,
struct value *original_value,
const struct value_print_options *options)
{
struct gdbarch *gdbarch = get_type_arch (type);
int printed_field = 0; /* Number of fields printed. */
struct type *elttype;
CORE_ADDR addr;
int index;
const gdb_byte *valaddr =value_contents_for_printing (original_value);
type = check_typedef (type);
switch (TYPE_CODE (type))
{
case TYPE_CODE_STRING:
f77_get_dynamic_length_of_aggregate (type);
LA_PRINT_STRING (stream, builtin_type (gdbarch)->builtin_char,
valaddr + embedded_offset,
TYPE_LENGTH (type), NULL, 0, options);
break;
case TYPE_CODE_ARRAY:
if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_CHAR)
{
fprintf_filtered (stream, "(");
f77_print_array (type, valaddr, embedded_offset,
address, stream, recurse, original_value, options);
fprintf_filtered (stream, ")");
}
else
{
struct type *ch_type = TYPE_TARGET_TYPE (type);
f77_get_dynamic_length_of_aggregate (type);
LA_PRINT_STRING (stream, ch_type,
valaddr + embedded_offset,
TYPE_LENGTH (type) / TYPE_LENGTH (ch_type),
NULL, 0, options);
}
break;
case TYPE_CODE_PTR:
if (options->format && options->format != 's')
{
val_print_scalar_formatted (type, embedded_offset,
original_value, options, 0, stream);
break;
}
else
{
int want_space = 0;
addr = unpack_pointer (type, valaddr + embedded_offset);
elttype = check_typedef (TYPE_TARGET_TYPE (type));
if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
{
/* Try to print what function it points to. */
print_function_pointer_address (options, gdbarch, addr, stream);
return;
}
if (options->symbol_print)
want_space = print_address_demangle (options, gdbarch, addr,
stream, demangle);
else if (options->addressprint && options->format != 's')
{
fputs_filtered (paddress (gdbarch, addr), stream);
want_space = 1;
}
/* For a pointer to char or unsigned char, also print the string
pointed to, unless pointer is null. */
if (TYPE_LENGTH (elttype) == 1
&& TYPE_CODE (elttype) == TYPE_CODE_INT
&& (options->format == 0 || options->format == 's')
&& addr != 0)
{
if (want_space)
fputs_filtered (" ", stream);
val_print_string (TYPE_TARGET_TYPE (type), NULL, addr, -1,
stream, options);
}
return;
}
break;
case TYPE_CODE_INT:
if (options->format || options->output_format)
{
struct value_print_options opts = *options;
opts.format = (options->format ? options->format
: options->output_format);
val_print_scalar_formatted (type, embedded_offset,
original_value, &opts, 0, stream);
}
else
val_print_scalar_formatted (type, embedded_offset,
original_value, options, 0, stream);
break;
case TYPE_CODE_STRUCT:
case TYPE_CODE_UNION:
/* Starting from the Fortran 90 standard, Fortran supports derived
types. */
fprintf_filtered (stream, "( ");
for (index = 0; index < TYPE_NFIELDS (type); index++)
{
struct value *field = value_field
((struct value *)original_value, index);
struct type *field_type = check_typedef (TYPE_FIELD_TYPE (type, index));
if (TYPE_CODE (field_type) != TYPE_CODE_FUNC)
{
const char *field_name;
if (printed_field > 0)
fputs_filtered (", ", stream);
field_name = TYPE_FIELD_NAME (type, index);
if (field_name != NULL)
{
fputs_filtered (field_name, stream);
fputs_filtered (" = ", stream);
}
val_print (value_type (field),
value_embedded_offset (field),
value_address (field), stream, recurse + 1,
field, options, current_language);
++printed_field;
}
}
fprintf_filtered (stream, " )");
break;
case TYPE_CODE_REF:
case TYPE_CODE_FUNC:
case TYPE_CODE_FLAGS:
case TYPE_CODE_FLT:
case TYPE_CODE_VOID:
case TYPE_CODE_ERROR:
case TYPE_CODE_RANGE:
case TYPE_CODE_UNDEF:
case TYPE_CODE_COMPLEX:
case TYPE_CODE_BOOL:
case TYPE_CODE_CHAR:
default:
generic_val_print (type, embedded_offset, address,
stream, recurse, original_value, options,
&f_decorations);
break;
}
gdb_flush (stream);
}
static void
info_common_command_for_block (const struct block *block, const char *comname,
int *any_printed)
{
struct block_iterator iter;
struct symbol *sym;
struct value_print_options opts;
get_user_print_options (&opts);
ALL_BLOCK_SYMBOLS (block, iter, sym)
if (SYMBOL_DOMAIN (sym) == COMMON_BLOCK_DOMAIN)
{
const struct common_block *common = SYMBOL_VALUE_COMMON_BLOCK (sym);
size_t index;
gdb_assert (SYMBOL_CLASS (sym) == LOC_COMMON_BLOCK);
if (comname && (!SYMBOL_LINKAGE_NAME (sym)
|| strcmp (comname, SYMBOL_LINKAGE_NAME (sym)) != 0))
continue;
if (*any_printed)
putchar_filtered ('\n');
else
*any_printed = 1;
if (SYMBOL_PRINT_NAME (sym))
printf_filtered (_("Contents of F77 COMMON block '%s':\n"),
SYMBOL_PRINT_NAME (sym));
else
printf_filtered (_("Contents of blank COMMON block:\n"));
for (index = 0; index < common->n_entries; index++)
{
struct value *val = NULL;
printf_filtered ("%s = ",
SYMBOL_PRINT_NAME (common->contents[index]));
TRY
{
val = value_of_variable (common->contents[index], block);
value_print (val, gdb_stdout, &opts);
}
CATCH (except, RETURN_MASK_ERROR)
{
printf_filtered ("<error reading variable: %s>", except.message);
}
END_CATCH
putchar_filtered ('\n');
}
}
}
/* This function is used to print out the values in a given COMMON
block. It will always use the most local common block of the
given name. */
static void
info_common_command (const char *comname, int from_tty)
{
struct frame_info *fi;
const struct block *block;
int values_printed = 0;
/* We have been told to display the contents of F77 COMMON
block supposedly visible in this function. Let us
first make sure that it is visible and if so, let
us display its contents. */
fi = get_selected_frame (_("No frame selected"));
/* The following is generally ripped off from stack.c's routine
print_frame_info(). */
block = get_frame_block (fi, 0);
if (block == NULL)
{
printf_filtered (_("No symbol table info available.\n"));
return;
}
while (block)
{
info_common_command_for_block (block, comname, &values_printed);
/* After handling the function's top-level block, stop. Don't
continue to its superblock, the block of per-file symbols. */
if (BLOCK_FUNCTION (block))
break;
block = BLOCK_SUPERBLOCK (block);
}
if (!values_printed)
{
if (comname)
printf_filtered (_("No common block '%s'.\n"), comname);
else
printf_filtered (_("No common blocks.\n"));
}
}
void
_initialize_f_valprint (void)
{
add_info ("common", info_common_command,
_("Print out the values contained in a Fortran COMMON block."));
}
|