1 /* Support for printing Fortran values for GDB, the GNU debugger.
3 Copyright (C) 1993-2017 Free Software Foundation, Inc.
5 Contributed by Motorola. Adapted from the C definitions by Farooq Butt
6 (fmbutt@engage.sps.mot.com), additionally worked over by Stan Shebs.
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "expression.h"
35 #include "dictionary.h"
37 static void f77_get_dynamic_length_of_aggregate (struct type *);
39 int f77_array_offset_tbl[MAX_FORTRAN_DIMS + 1][2];
41 /* Array which holds offsets to be applied to get a row's elements
42 for a given array. Array also holds the size of each subarray. */
45 f77_get_lowerbound (struct type *type)
47 if (TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type))
48 error (_("Lower bound may not be '*' in F77"));
50 return TYPE_ARRAY_LOWER_BOUND_VALUE (type);
54 f77_get_upperbound (struct type *type)
56 if (TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))
58 /* We have an assumed size array on our hands. Assume that
59 upper_bound == lower_bound so that we show at least 1 element.
60 If the user wants to see more elements, let him manually ask for 'em
61 and we'll subscript the array and show him. */
63 return f77_get_lowerbound (type);
66 return TYPE_ARRAY_UPPER_BOUND_VALUE (type);
69 /* Obtain F77 adjustable array dimensions. */
72 f77_get_dynamic_length_of_aggregate (struct type *type)
77 /* Recursively go all the way down into a possibly multi-dimensional
78 F77 array and get the bounds. For simple arrays, this is pretty
79 easy but when the bounds are dynamic, we must be very careful
80 to add up all the lengths correctly. Not doing this right
81 will lead to horrendous-looking arrays in parameter lists.
83 This function also works for strings which behave very
84 similarly to arrays. */
86 if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY
87 || TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRING)
88 f77_get_dynamic_length_of_aggregate (TYPE_TARGET_TYPE (type));
90 /* Recursion ends here, start setting up lengths. */
91 lower_bound = f77_get_lowerbound (type);
92 upper_bound = f77_get_upperbound (type);
94 /* Patch in a valid length value. */
97 (upper_bound - lower_bound + 1)
98 * TYPE_LENGTH (check_typedef (TYPE_TARGET_TYPE (type)));
101 /* Actual function which prints out F77 arrays, Valaddr == address in
102 the superior. Address == the address in the inferior. */
105 f77_print_array_1 (int nss, int ndimensions, struct type *type,
106 const gdb_byte *valaddr,
107 int embedded_offset, CORE_ADDR address,
108 struct ui_file *stream, int recurse,
109 const struct value *val,
110 const struct value_print_options *options,
113 struct type *range_type = TYPE_INDEX_TYPE (check_typedef (type));
114 CORE_ADDR addr = address + embedded_offset;
115 LONGEST lowerbound, upperbound;
118 get_discrete_bounds (range_type, &lowerbound, &upperbound);
120 if (nss != ndimensions)
122 size_t dim_size = TYPE_LENGTH (TYPE_TARGET_TYPE (type));
126 (i < upperbound + 1 && (*elts) < options->print_max);
129 struct value *subarray = value_from_contents_and_address
130 (TYPE_TARGET_TYPE (type), value_contents_for_printing_const (val)
131 + offs, addr + offs);
133 fprintf_filtered (stream, "( ");
134 f77_print_array_1 (nss + 1, ndimensions, value_type (subarray),
135 value_contents_for_printing (subarray),
136 value_embedded_offset (subarray),
137 value_address (subarray),
138 stream, recurse, subarray, options, elts);
140 fprintf_filtered (stream, ") ");
142 if (*elts >= options->print_max && i < upperbound)
143 fprintf_filtered (stream, "...");
147 for (i = lowerbound; i < upperbound + 1 && (*elts) < options->print_max;
150 struct value *elt = value_subscript ((struct value *)val, i);
152 val_print (value_type (elt),
153 value_embedded_offset (elt),
154 value_address (elt), stream, recurse,
155 elt, options, current_language);
158 fprintf_filtered (stream, ", ");
160 if ((*elts == options->print_max - 1)
161 && (i != upperbound))
162 fprintf_filtered (stream, "...");
167 /* This function gets called to print an F77 array, we set up some
168 stuff and then immediately call f77_print_array_1(). */
171 f77_print_array (struct type *type, const gdb_byte *valaddr,
173 CORE_ADDR address, struct ui_file *stream,
175 const struct value *val,
176 const struct value_print_options *options)
181 ndimensions = calc_f77_array_dims (type);
183 if (ndimensions > MAX_FORTRAN_DIMS || ndimensions < 0)
185 Type node corrupt! F77 arrays cannot have %d subscripts (%d Max)"),
186 ndimensions, MAX_FORTRAN_DIMS);
188 f77_print_array_1 (1, ndimensions, type, valaddr, embedded_offset,
189 address, stream, recurse, val, options, &elts);
193 /* Decorations for Fortran. */
195 static const struct generic_val_print_decorations f_decorations =
207 /* See val_print for a description of the various parameters of this
208 function; they are identical. */
211 f_val_print (struct type *type, int embedded_offset,
212 CORE_ADDR address, struct ui_file *stream, int recurse,
213 struct value *original_value,
214 const struct value_print_options *options)
216 struct gdbarch *gdbarch = get_type_arch (type);
217 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
218 int printed_field = 0; /* Number of fields printed. */
219 struct type *elttype;
222 const gdb_byte *valaddr =value_contents_for_printing (original_value);
224 type = check_typedef (type);
225 switch (TYPE_CODE (type))
227 case TYPE_CODE_STRING:
228 f77_get_dynamic_length_of_aggregate (type);
229 LA_PRINT_STRING (stream, builtin_type (gdbarch)->builtin_char,
230 valaddr + embedded_offset,
231 TYPE_LENGTH (type), NULL, 0, options);
234 case TYPE_CODE_ARRAY:
235 if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_CHAR)
237 fprintf_filtered (stream, "(");
238 f77_print_array (type, valaddr, embedded_offset,
239 address, stream, recurse, original_value, options);
240 fprintf_filtered (stream, ")");
244 struct type *ch_type = TYPE_TARGET_TYPE (type);
246 f77_get_dynamic_length_of_aggregate (type);
247 LA_PRINT_STRING (stream, ch_type,
248 valaddr + embedded_offset,
249 TYPE_LENGTH (type) / TYPE_LENGTH (ch_type),
255 if (options->format && options->format != 's')
257 val_print_scalar_formatted (type, embedded_offset,
258 original_value, options, 0, stream);
265 addr = unpack_pointer (type, valaddr + embedded_offset);
266 elttype = check_typedef (TYPE_TARGET_TYPE (type));
268 if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
270 /* Try to print what function it points to. */
271 print_function_pointer_address (options, gdbarch, addr, stream);
275 if (options->symbol_print)
276 want_space = print_address_demangle (options, gdbarch, addr,
278 else if (options->addressprint && options->format != 's')
280 fputs_filtered (paddress (gdbarch, addr), stream);
284 /* For a pointer to char or unsigned char, also print the string
285 pointed to, unless pointer is null. */
286 if (TYPE_LENGTH (elttype) == 1
287 && TYPE_CODE (elttype) == TYPE_CODE_INT
288 && (options->format == 0 || options->format == 's')
292 fputs_filtered (" ", stream);
293 val_print_string (TYPE_TARGET_TYPE (type), NULL, addr, -1,
301 if (options->format || options->output_format)
303 struct value_print_options opts = *options;
305 opts.format = (options->format ? options->format
306 : options->output_format);
307 val_print_scalar_formatted (type, embedded_offset,
308 original_value, &opts, 0, stream);
311 val_print_scalar_formatted (type, embedded_offset,
312 original_value, options, 0, stream);
315 case TYPE_CODE_STRUCT:
316 case TYPE_CODE_UNION:
317 /* Starting from the Fortran 90 standard, Fortran supports derived
319 fprintf_filtered (stream, "( ");
320 for (index = 0; index < TYPE_NFIELDS (type); index++)
322 struct value *field = value_field
323 ((struct value *)original_value, index);
325 struct type *field_type = check_typedef (TYPE_FIELD_TYPE (type, index));
328 if (TYPE_CODE (field_type) != TYPE_CODE_FUNC)
330 const char *field_name;
332 if (printed_field > 0)
333 fputs_filtered (", ", stream);
335 field_name = TYPE_FIELD_NAME (type, index);
336 if (field_name != NULL)
338 fputs_filtered (field_name, stream);
339 fputs_filtered (" = ", stream);
342 val_print (value_type (field),
343 value_embedded_offset (field),
344 value_address (field), stream, recurse + 1,
345 field, options, current_language);
350 fprintf_filtered (stream, " )");
355 case TYPE_CODE_FLAGS:
358 case TYPE_CODE_ERROR:
359 case TYPE_CODE_RANGE:
360 case TYPE_CODE_UNDEF:
361 case TYPE_CODE_COMPLEX:
365 generic_val_print (type, embedded_offset, address,
366 stream, recurse, original_value, options,
374 info_common_command_for_block (const struct block *block, const char *comname,
377 struct block_iterator iter;
380 struct value_print_options opts;
382 get_user_print_options (&opts);
384 ALL_BLOCK_SYMBOLS (block, iter, sym)
385 if (SYMBOL_DOMAIN (sym) == COMMON_BLOCK_DOMAIN)
387 const struct common_block *common = SYMBOL_VALUE_COMMON_BLOCK (sym);
390 gdb_assert (SYMBOL_CLASS (sym) == LOC_COMMON_BLOCK);
392 if (comname && (!SYMBOL_LINKAGE_NAME (sym)
393 || strcmp (comname, SYMBOL_LINKAGE_NAME (sym)) != 0))
397 putchar_filtered ('\n');
400 if (SYMBOL_PRINT_NAME (sym))
401 printf_filtered (_("Contents of F77 COMMON block '%s':\n"),
402 SYMBOL_PRINT_NAME (sym));
404 printf_filtered (_("Contents of blank COMMON block:\n"));
406 for (index = 0; index < common->n_entries; index++)
408 struct value *val = NULL;
410 printf_filtered ("%s = ",
411 SYMBOL_PRINT_NAME (common->contents[index]));
415 val = value_of_variable (common->contents[index], block);
416 value_print (val, gdb_stdout, &opts);
419 CATCH (except, RETURN_MASK_ERROR)
421 printf_filtered ("<error reading variable: %s>", except.message);
425 putchar_filtered ('\n');
430 /* This function is used to print out the values in a given COMMON
431 block. It will always use the most local common block of the
435 info_common_command (const char *comname, int from_tty)
437 struct frame_info *fi;
438 const struct block *block;
439 int values_printed = 0;
441 /* We have been told to display the contents of F77 COMMON
442 block supposedly visible in this function. Let us
443 first make sure that it is visible and if so, let
444 us display its contents. */
446 fi = get_selected_frame (_("No frame selected"));
448 /* The following is generally ripped off from stack.c's routine
449 print_frame_info(). */
451 block = get_frame_block (fi, 0);
454 printf_filtered (_("No symbol table info available.\n"));
460 info_common_command_for_block (block, comname, &values_printed);
461 /* After handling the function's top-level block, stop. Don't
462 continue to its superblock, the block of per-file symbols. */
463 if (BLOCK_FUNCTION (block))
465 block = BLOCK_SUPERBLOCK (block);
471 printf_filtered (_("No common block '%s'.\n"), comname);
473 printf_filtered (_("No common blocks.\n"));
478 _initialize_f_valprint (void)
480 add_info ("common", info_common_command,
481 _("Print out the values contained in a Fortran COMMON block."));