Commit | Line | Data |
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c906108c | 1 | /* Support for printing Fortran values for GDB, the GNU debugger. |
a2bd3dcd | 2 | |
61baf725 | 3 | Copyright (C) 1993-2017 Free Software Foundation, Inc. |
a2bd3dcd | 4 | |
c906108c SS |
5 | Contributed by Motorola. Adapted from the C definitions by Farooq Butt |
6 | (fmbutt@engage.sps.mot.com), additionally worked over by Stan Shebs. | |
7 | ||
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
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 | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 13 | (at your option) any later version. |
c906108c | 14 | |
c5aa993b JM |
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. | |
c906108c | 19 | |
c5aa993b | 20 | You should have received a copy of the GNU General Public License |
a9762ec7 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
22 | |
23 | #include "defs.h" | |
c906108c SS |
24 | #include "symtab.h" |
25 | #include "gdbtypes.h" | |
26 | #include "expression.h" | |
27 | #include "value.h" | |
c906108c SS |
28 | #include "valprint.h" |
29 | #include "language.h" | |
c5aa993b | 30 | #include "f-lang.h" |
c906108c SS |
31 | #include "frame.h" |
32 | #include "gdbcore.h" | |
33 | #include "command.h" | |
fe898f56 | 34 | #include "block.h" |
4357ac6c | 35 | #include "dictionary.h" |
c906108c | 36 | |
a14ed312 | 37 | static void f77_get_dynamic_length_of_aggregate (struct type *); |
c906108c | 38 | |
c5aa993b | 39 | int f77_array_offset_tbl[MAX_FORTRAN_DIMS + 1][2]; |
c906108c SS |
40 | |
41 | /* Array which holds offsets to be applied to get a row's elements | |
0963b4bd | 42 | for a given array. Array also holds the size of each subarray. */ |
c906108c | 43 | |
c5aa993b | 44 | int |
d78df370 | 45 | f77_get_lowerbound (struct type *type) |
c906108c | 46 | { |
d78df370 JK |
47 | if (TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type)) |
48 | error (_("Lower bound may not be '*' in F77")); | |
c5aa993b | 49 | |
d78df370 | 50 | return TYPE_ARRAY_LOWER_BOUND_VALUE (type); |
c906108c SS |
51 | } |
52 | ||
c5aa993b | 53 | int |
d78df370 | 54 | f77_get_upperbound (struct type *type) |
c906108c | 55 | { |
d78df370 | 56 | if (TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type)) |
c906108c | 57 | { |
d78df370 JK |
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. */ | |
62 | ||
63 | return f77_get_lowerbound (type); | |
c906108c | 64 | } |
d78df370 JK |
65 | |
66 | return TYPE_ARRAY_UPPER_BOUND_VALUE (type); | |
c906108c SS |
67 | } |
68 | ||
0963b4bd | 69 | /* Obtain F77 adjustable array dimensions. */ |
c906108c SS |
70 | |
71 | static void | |
fba45db2 | 72 | f77_get_dynamic_length_of_aggregate (struct type *type) |
c906108c SS |
73 | { |
74 | int upper_bound = -1; | |
c5aa993b | 75 | int lower_bound = 1; |
c5aa993b | 76 | |
c906108c SS |
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. | |
c5aa993b | 82 | |
c906108c | 83 | This function also works for strings which behave very |
c5aa993b JM |
84 | similarly to arrays. */ |
85 | ||
86 | if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY | |
87 | || TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRING) | |
c906108c | 88 | f77_get_dynamic_length_of_aggregate (TYPE_TARGET_TYPE (type)); |
c5aa993b JM |
89 | |
90 | /* Recursion ends here, start setting up lengths. */ | |
d78df370 JK |
91 | lower_bound = f77_get_lowerbound (type); |
92 | upper_bound = f77_get_upperbound (type); | |
c5aa993b | 93 | |
0963b4bd | 94 | /* Patch in a valid length value. */ |
c5aa993b | 95 | |
c906108c | 96 | TYPE_LENGTH (type) = |
3e43a32a MS |
97 | (upper_bound - lower_bound + 1) |
98 | * TYPE_LENGTH (check_typedef (TYPE_TARGET_TYPE (type))); | |
c5aa993b | 99 | } |
c906108c | 100 | |
c906108c SS |
101 | /* Actual function which prints out F77 arrays, Valaddr == address in |
102 | the superior. Address == the address in the inferior. */ | |
7b0090c3 | 103 | |
c5aa993b | 104 | static void |
a2bd3dcd | 105 | f77_print_array_1 (int nss, int ndimensions, struct type *type, |
490f124f PA |
106 | const gdb_byte *valaddr, |
107 | int embedded_offset, CORE_ADDR address, | |
79a45b7d | 108 | struct ui_file *stream, int recurse, |
0e03807e | 109 | const struct value *val, |
79a45b7d | 110 | const struct value_print_options *options, |
b3cacbee | 111 | int *elts) |
c906108c | 112 | { |
3e2e34f8 KB |
113 | struct type *range_type = TYPE_INDEX_TYPE (check_typedef (type)); |
114 | CORE_ADDR addr = address + embedded_offset; | |
115 | LONGEST lowerbound, upperbound; | |
c906108c | 116 | int i; |
c5aa993b | 117 | |
3e2e34f8 KB |
118 | get_discrete_bounds (range_type, &lowerbound, &upperbound); |
119 | ||
c906108c SS |
120 | if (nss != ndimensions) |
121 | { | |
3e2e34f8 KB |
122 | size_t dim_size = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); |
123 | size_t offs = 0; | |
124 | ||
125 | for (i = lowerbound; | |
126 | (i < upperbound + 1 && (*elts) < options->print_max); | |
3e43a32a | 127 | i++) |
c906108c | 128 | { |
3e2e34f8 KB |
129 | struct value *subarray = value_from_contents_and_address |
130 | (TYPE_TARGET_TYPE (type), value_contents_for_printing_const (val) | |
131 | + offs, addr + offs); | |
132 | ||
c906108c | 133 | fprintf_filtered (stream, "( "); |
3e2e34f8 KB |
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); | |
139 | offs += dim_size; | |
c906108c SS |
140 | fprintf_filtered (stream, ") "); |
141 | } | |
3e2e34f8 | 142 | if (*elts >= options->print_max && i < upperbound) |
b3cacbee | 143 | fprintf_filtered (stream, "..."); |
c906108c SS |
144 | } |
145 | else | |
146 | { | |
3e2e34f8 | 147 | for (i = lowerbound; i < upperbound + 1 && (*elts) < options->print_max; |
7b0090c3 | 148 | i++, (*elts)++) |
c906108c | 149 | { |
3e2e34f8 KB |
150 | struct value *elt = value_subscript ((struct value *)val, i); |
151 | ||
152 | val_print (value_type (elt), | |
3e2e34f8 KB |
153 | value_embedded_offset (elt), |
154 | value_address (elt), stream, recurse, | |
155 | elt, options, current_language); | |
c906108c | 156 | |
3e2e34f8 | 157 | if (i != upperbound) |
c5aa993b JM |
158 | fprintf_filtered (stream, ", "); |
159 | ||
79a45b7d | 160 | if ((*elts == options->print_max - 1) |
3e2e34f8 | 161 | && (i != upperbound)) |
c906108c SS |
162 | fprintf_filtered (stream, "..."); |
163 | } | |
164 | } | |
165 | } | |
166 | ||
167 | /* This function gets called to print an F77 array, we set up some | |
0963b4bd | 168 | stuff and then immediately call f77_print_array_1(). */ |
c906108c | 169 | |
c5aa993b | 170 | static void |
fc1a4b47 | 171 | f77_print_array (struct type *type, const gdb_byte *valaddr, |
490f124f | 172 | int embedded_offset, |
a2bd3dcd | 173 | CORE_ADDR address, struct ui_file *stream, |
0e03807e TT |
174 | int recurse, |
175 | const struct value *val, | |
176 | const struct value_print_options *options) | |
c906108c | 177 | { |
c5aa993b | 178 | int ndimensions; |
b3cacbee | 179 | int elts = 0; |
c5aa993b JM |
180 | |
181 | ndimensions = calc_f77_array_dims (type); | |
182 | ||
c906108c | 183 | if (ndimensions > MAX_FORTRAN_DIMS || ndimensions < 0) |
3e43a32a MS |
184 | error (_("\ |
185 | Type node corrupt! F77 arrays cannot have %d subscripts (%d Max)"), | |
c906108c | 186 | ndimensions, MAX_FORTRAN_DIMS); |
c5aa993b | 187 | |
490f124f PA |
188 | f77_print_array_1 (1, ndimensions, type, valaddr, embedded_offset, |
189 | address, stream, recurse, val, options, &elts); | |
c5aa993b | 190 | } |
c906108c | 191 | \f |
c5aa993b | 192 | |
e88acd96 TT |
193 | /* Decorations for Fortran. */ |
194 | ||
195 | static const struct generic_val_print_decorations f_decorations = | |
196 | { | |
197 | "(", | |
198 | ",", | |
199 | ")", | |
200 | ".TRUE.", | |
201 | ".FALSE.", | |
202 | "VOID", | |
00272ec4 TT |
203 | "{", |
204 | "}" | |
e88acd96 TT |
205 | }; |
206 | ||
32b72a42 | 207 | /* See val_print for a description of the various parameters of this |
d3eab38a | 208 | function; they are identical. */ |
c906108c | 209 | |
d3eab38a | 210 | void |
e8b24d9f | 211 | f_val_print (struct type *type, int embedded_offset, |
79a45b7d | 212 | CORE_ADDR address, struct ui_file *stream, int recurse, |
e8b24d9f | 213 | struct value *original_value, |
79a45b7d | 214 | const struct value_print_options *options) |
c906108c | 215 | { |
50810684 | 216 | struct gdbarch *gdbarch = get_type_arch (type); |
e17a4113 | 217 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
04d59df6 | 218 | int printed_field = 0; /* Number of fields printed. */ |
c906108c | 219 | struct type *elttype; |
c906108c | 220 | CORE_ADDR addr; |
2a5e440c | 221 | int index; |
e8b24d9f | 222 | const gdb_byte *valaddr =value_contents_for_printing (original_value); |
c5aa993b | 223 | |
f168693b | 224 | type = check_typedef (type); |
c906108c SS |
225 | switch (TYPE_CODE (type)) |
226 | { | |
c5aa993b | 227 | case TYPE_CODE_STRING: |
c906108c | 228 | f77_get_dynamic_length_of_aggregate (type); |
50810684 | 229 | LA_PRINT_STRING (stream, builtin_type (gdbarch)->builtin_char, |
490f124f PA |
230 | valaddr + embedded_offset, |
231 | TYPE_LENGTH (type), NULL, 0, options); | |
c906108c | 232 | break; |
c5aa993b | 233 | |
c906108c | 234 | case TYPE_CODE_ARRAY: |
3b2b8fea TT |
235 | if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_CHAR) |
236 | { | |
237 | fprintf_filtered (stream, "("); | |
238 | f77_print_array (type, valaddr, embedded_offset, | |
239 | address, stream, recurse, original_value, options); | |
240 | fprintf_filtered (stream, ")"); | |
241 | } | |
242 | else | |
243 | { | |
244 | struct type *ch_type = TYPE_TARGET_TYPE (type); | |
245 | ||
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), | |
250 | NULL, 0, options); | |
251 | } | |
c906108c | 252 | break; |
7e86466e | 253 | |
c906108c | 254 | case TYPE_CODE_PTR: |
79a45b7d | 255 | if (options->format && options->format != 's') |
c906108c | 256 | { |
e8b24d9f | 257 | val_print_scalar_formatted (type, embedded_offset, |
ab2188aa | 258 | original_value, options, 0, stream); |
c906108c SS |
259 | break; |
260 | } | |
261 | else | |
262 | { | |
b012acdd TT |
263 | int want_space = 0; |
264 | ||
490f124f | 265 | addr = unpack_pointer (type, valaddr + embedded_offset); |
c906108c | 266 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); |
c5aa993b | 267 | |
c906108c SS |
268 | if (TYPE_CODE (elttype) == TYPE_CODE_FUNC) |
269 | { | |
270 | /* Try to print what function it points to. */ | |
edf0c1b7 | 271 | print_function_pointer_address (options, gdbarch, addr, stream); |
d3eab38a | 272 | return; |
c906108c | 273 | } |
c5aa993b | 274 | |
9cb709b6 TT |
275 | if (options->symbol_print) |
276 | want_space = print_address_demangle (options, gdbarch, addr, | |
277 | stream, demangle); | |
278 | else if (options->addressprint && options->format != 's') | |
b012acdd TT |
279 | { |
280 | fputs_filtered (paddress (gdbarch, addr), stream); | |
281 | want_space = 1; | |
282 | } | |
c5aa993b | 283 | |
c906108c SS |
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 | |
79a45b7d | 288 | && (options->format == 0 || options->format == 's') |
c906108c | 289 | && addr != 0) |
b012acdd TT |
290 | { |
291 | if (want_space) | |
292 | fputs_filtered (" ", stream); | |
78cc6c2d TT |
293 | val_print_string (TYPE_TARGET_TYPE (type), NULL, addr, -1, |
294 | stream, options); | |
b012acdd | 295 | } |
d3eab38a | 296 | return; |
7e86466e RH |
297 | } |
298 | break; | |
299 | ||
c906108c | 300 | case TYPE_CODE_INT: |
79a45b7d TT |
301 | if (options->format || options->output_format) |
302 | { | |
303 | struct value_print_options opts = *options; | |
bb9bcb69 | 304 | |
79a45b7d TT |
305 | opts.format = (options->format ? options->format |
306 | : options->output_format); | |
e8b24d9f | 307 | val_print_scalar_formatted (type, embedded_offset, |
eb0b0463 | 308 | original_value, &opts, 0, stream); |
79a45b7d | 309 | } |
c906108c | 310 | else |
469412dd CW |
311 | val_print_scalar_formatted (type, embedded_offset, |
312 | original_value, options, 0, stream); | |
c906108c | 313 | break; |
c5aa993b | 314 | |
2a5e440c | 315 | case TYPE_CODE_STRUCT: |
9eec4d1e | 316 | case TYPE_CODE_UNION: |
2a5e440c WZ |
317 | /* Starting from the Fortran 90 standard, Fortran supports derived |
318 | types. */ | |
9eec4d1e | 319 | fprintf_filtered (stream, "( "); |
2a5e440c WZ |
320 | for (index = 0; index < TYPE_NFIELDS (type); index++) |
321 | { | |
3e2e34f8 KB |
322 | struct value *field = value_field |
323 | ((struct value *)original_value, index); | |
324 | ||
04d59df6 | 325 | struct type *field_type = check_typedef (TYPE_FIELD_TYPE (type, index)); |
bb9bcb69 | 326 | |
04d59df6 WT |
327 | |
328 | if (TYPE_CODE (field_type) != TYPE_CODE_FUNC) | |
329 | { | |
330 | const char *field_name; | |
331 | ||
332 | if (printed_field > 0) | |
333 | fputs_filtered (", ", stream); | |
334 | ||
335 | field_name = TYPE_FIELD_NAME (type, index); | |
336 | if (field_name != NULL) | |
337 | { | |
338 | fputs_filtered (field_name, stream); | |
339 | fputs_filtered (" = ", stream); | |
340 | } | |
341 | ||
342 | val_print (value_type (field), | |
04d59df6 WT |
343 | value_embedded_offset (field), |
344 | value_address (field), stream, recurse + 1, | |
345 | field, options, current_language); | |
346 | ||
347 | ++printed_field; | |
348 | } | |
349 | } | |
9eec4d1e | 350 | fprintf_filtered (stream, " )"); |
2a5e440c WZ |
351 | break; |
352 | ||
e88acd96 TT |
353 | case TYPE_CODE_REF: |
354 | case TYPE_CODE_FUNC: | |
355 | case TYPE_CODE_FLAGS: | |
356 | case TYPE_CODE_FLT: | |
357 | case TYPE_CODE_VOID: | |
358 | case TYPE_CODE_ERROR: | |
359 | case TYPE_CODE_RANGE: | |
360 | case TYPE_CODE_UNDEF: | |
361 | case TYPE_CODE_COMPLEX: | |
362 | case TYPE_CODE_BOOL: | |
363 | case TYPE_CODE_CHAR: | |
c906108c | 364 | default: |
e8b24d9f | 365 | generic_val_print (type, embedded_offset, address, |
e88acd96 TT |
366 | stream, recurse, original_value, options, |
367 | &f_decorations); | |
368 | break; | |
c906108c SS |
369 | } |
370 | gdb_flush (stream); | |
c906108c SS |
371 | } |
372 | ||
373 | static void | |
3977b71f | 374 | info_common_command_for_block (const struct block *block, const char *comname, |
4357ac6c | 375 | int *any_printed) |
c906108c | 376 | { |
4357ac6c TT |
377 | struct block_iterator iter; |
378 | struct symbol *sym; | |
379 | const char *name; | |
380 | struct value_print_options opts; | |
381 | ||
382 | get_user_print_options (&opts); | |
383 | ||
384 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
385 | if (SYMBOL_DOMAIN (sym) == COMMON_BLOCK_DOMAIN) | |
386 | { | |
17a40b44 | 387 | const struct common_block *common = SYMBOL_VALUE_COMMON_BLOCK (sym); |
4357ac6c TT |
388 | size_t index; |
389 | ||
5a352474 | 390 | gdb_assert (SYMBOL_CLASS (sym) == LOC_COMMON_BLOCK); |
4357ac6c TT |
391 | |
392 | if (comname && (!SYMBOL_LINKAGE_NAME (sym) | |
393 | || strcmp (comname, SYMBOL_LINKAGE_NAME (sym)) != 0)) | |
394 | continue; | |
395 | ||
396 | if (*any_printed) | |
397 | putchar_filtered ('\n'); | |
398 | else | |
399 | *any_printed = 1; | |
400 | if (SYMBOL_PRINT_NAME (sym)) | |
401 | printf_filtered (_("Contents of F77 COMMON block '%s':\n"), | |
402 | SYMBOL_PRINT_NAME (sym)); | |
403 | else | |
404 | printf_filtered (_("Contents of blank COMMON block:\n")); | |
405 | ||
406 | for (index = 0; index < common->n_entries; index++) | |
407 | { | |
408 | struct value *val = NULL; | |
4357ac6c TT |
409 | |
410 | printf_filtered ("%s = ", | |
411 | SYMBOL_PRINT_NAME (common->contents[index])); | |
412 | ||
492d29ea | 413 | TRY |
4357ac6c TT |
414 | { |
415 | val = value_of_variable (common->contents[index], block); | |
416 | value_print (val, gdb_stdout, &opts); | |
417 | } | |
418 | ||
492d29ea PA |
419 | CATCH (except, RETURN_MASK_ERROR) |
420 | { | |
421 | printf_filtered ("<error reading variable: %s>", except.message); | |
422 | } | |
423 | END_CATCH | |
424 | ||
4357ac6c TT |
425 | putchar_filtered ('\n'); |
426 | } | |
427 | } | |
c906108c SS |
428 | } |
429 | ||
430 | /* This function is used to print out the values in a given COMMON | |
0963b4bd MS |
431 | block. It will always use the most local common block of the |
432 | given name. */ | |
c906108c | 433 | |
c5aa993b | 434 | static void |
1d12d88f | 435 | info_common_command (const char *comname, int from_tty) |
c906108c | 436 | { |
c906108c | 437 | struct frame_info *fi; |
3977b71f | 438 | const struct block *block; |
4357ac6c | 439 | int values_printed = 0; |
c5aa993b | 440 | |
c906108c SS |
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 | |
0963b4bd | 444 | us display its contents. */ |
c5aa993b | 445 | |
206415a3 | 446 | fi = get_selected_frame (_("No frame selected")); |
c5aa993b | 447 | |
c906108c | 448 | /* The following is generally ripped off from stack.c's routine |
0963b4bd | 449 | print_frame_info(). */ |
c5aa993b | 450 | |
4357ac6c TT |
451 | block = get_frame_block (fi, 0); |
452 | if (block == NULL) | |
c906108c | 453 | { |
4357ac6c TT |
454 | printf_filtered (_("No symbol table info available.\n")); |
455 | return; | |
c906108c | 456 | } |
c5aa993b | 457 | |
4357ac6c | 458 | while (block) |
c906108c | 459 | { |
4357ac6c TT |
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)) | |
464 | break; | |
465 | block = BLOCK_SUPERBLOCK (block); | |
c906108c | 466 | } |
c5aa993b | 467 | |
4357ac6c | 468 | if (!values_printed) |
c906108c | 469 | { |
4357ac6c TT |
470 | if (comname) |
471 | printf_filtered (_("No common block '%s'.\n"), comname); | |
c5aa993b | 472 | else |
4357ac6c | 473 | printf_filtered (_("No common blocks.\n")); |
c906108c | 474 | } |
c906108c SS |
475 | } |
476 | ||
c906108c | 477 | void |
fba45db2 | 478 | _initialize_f_valprint (void) |
c906108c SS |
479 | { |
480 | add_info ("common", info_common_command, | |
1bedd215 | 481 | _("Print out the values contained in a Fortran COMMON block.")); |
c906108c | 482 | } |