Commit | Line | Data |
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c906108c | 1 | /* Support for printing Fortran values for GDB, the GNU debugger. |
a2bd3dcd | 2 | |
e2882c85 | 3 | Copyright (C) 1993-2018 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); |
04d59df6 | 217 | int printed_field = 0; /* Number of fields printed. */ |
c906108c | 218 | struct type *elttype; |
c906108c | 219 | CORE_ADDR addr; |
2a5e440c | 220 | int index; |
e8b24d9f | 221 | const gdb_byte *valaddr =value_contents_for_printing (original_value); |
c5aa993b | 222 | |
f168693b | 223 | type = check_typedef (type); |
c906108c SS |
224 | switch (TYPE_CODE (type)) |
225 | { | |
c5aa993b | 226 | case TYPE_CODE_STRING: |
c906108c | 227 | f77_get_dynamic_length_of_aggregate (type); |
50810684 | 228 | LA_PRINT_STRING (stream, builtin_type (gdbarch)->builtin_char, |
490f124f PA |
229 | valaddr + embedded_offset, |
230 | TYPE_LENGTH (type), NULL, 0, options); | |
c906108c | 231 | break; |
c5aa993b | 232 | |
c906108c | 233 | case TYPE_CODE_ARRAY: |
3b2b8fea TT |
234 | if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_CHAR) |
235 | { | |
236 | fprintf_filtered (stream, "("); | |
237 | f77_print_array (type, valaddr, embedded_offset, | |
238 | address, stream, recurse, original_value, options); | |
239 | fprintf_filtered (stream, ")"); | |
240 | } | |
241 | else | |
242 | { | |
243 | struct type *ch_type = TYPE_TARGET_TYPE (type); | |
244 | ||
245 | f77_get_dynamic_length_of_aggregate (type); | |
246 | LA_PRINT_STRING (stream, ch_type, | |
247 | valaddr + embedded_offset, | |
248 | TYPE_LENGTH (type) / TYPE_LENGTH (ch_type), | |
249 | NULL, 0, options); | |
250 | } | |
c906108c | 251 | break; |
7e86466e | 252 | |
c906108c | 253 | case TYPE_CODE_PTR: |
79a45b7d | 254 | if (options->format && options->format != 's') |
c906108c | 255 | { |
e8b24d9f | 256 | val_print_scalar_formatted (type, embedded_offset, |
ab2188aa | 257 | original_value, options, 0, stream); |
c906108c SS |
258 | break; |
259 | } | |
260 | else | |
261 | { | |
b012acdd TT |
262 | int want_space = 0; |
263 | ||
490f124f | 264 | addr = unpack_pointer (type, valaddr + embedded_offset); |
c906108c | 265 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); |
c5aa993b | 266 | |
c906108c SS |
267 | if (TYPE_CODE (elttype) == TYPE_CODE_FUNC) |
268 | { | |
269 | /* Try to print what function it points to. */ | |
edf0c1b7 | 270 | print_function_pointer_address (options, gdbarch, addr, stream); |
d3eab38a | 271 | return; |
c906108c | 272 | } |
c5aa993b | 273 | |
9cb709b6 TT |
274 | if (options->symbol_print) |
275 | want_space = print_address_demangle (options, gdbarch, addr, | |
276 | stream, demangle); | |
277 | else if (options->addressprint && options->format != 's') | |
b012acdd TT |
278 | { |
279 | fputs_filtered (paddress (gdbarch, addr), stream); | |
280 | want_space = 1; | |
281 | } | |
c5aa993b | 282 | |
c906108c SS |
283 | /* For a pointer to char or unsigned char, also print the string |
284 | pointed to, unless pointer is null. */ | |
285 | if (TYPE_LENGTH (elttype) == 1 | |
286 | && TYPE_CODE (elttype) == TYPE_CODE_INT | |
79a45b7d | 287 | && (options->format == 0 || options->format == 's') |
c906108c | 288 | && addr != 0) |
b012acdd TT |
289 | { |
290 | if (want_space) | |
291 | fputs_filtered (" ", stream); | |
78cc6c2d TT |
292 | val_print_string (TYPE_TARGET_TYPE (type), NULL, addr, -1, |
293 | stream, options); | |
b012acdd | 294 | } |
d3eab38a | 295 | return; |
7e86466e RH |
296 | } |
297 | break; | |
298 | ||
c906108c | 299 | case TYPE_CODE_INT: |
79a45b7d TT |
300 | if (options->format || options->output_format) |
301 | { | |
302 | struct value_print_options opts = *options; | |
bb9bcb69 | 303 | |
79a45b7d TT |
304 | opts.format = (options->format ? options->format |
305 | : options->output_format); | |
e8b24d9f | 306 | val_print_scalar_formatted (type, embedded_offset, |
eb0b0463 | 307 | original_value, &opts, 0, stream); |
79a45b7d | 308 | } |
c906108c | 309 | else |
469412dd CW |
310 | val_print_scalar_formatted (type, embedded_offset, |
311 | original_value, options, 0, stream); | |
c906108c | 312 | break; |
c5aa993b | 313 | |
2a5e440c | 314 | case TYPE_CODE_STRUCT: |
9eec4d1e | 315 | case TYPE_CODE_UNION: |
2a5e440c WZ |
316 | /* Starting from the Fortran 90 standard, Fortran supports derived |
317 | types. */ | |
9eec4d1e | 318 | fprintf_filtered (stream, "( "); |
2a5e440c WZ |
319 | for (index = 0; index < TYPE_NFIELDS (type); index++) |
320 | { | |
3e2e34f8 KB |
321 | struct value *field = value_field |
322 | ((struct value *)original_value, index); | |
323 | ||
04d59df6 | 324 | struct type *field_type = check_typedef (TYPE_FIELD_TYPE (type, index)); |
bb9bcb69 | 325 | |
04d59df6 WT |
326 | |
327 | if (TYPE_CODE (field_type) != TYPE_CODE_FUNC) | |
328 | { | |
329 | const char *field_name; | |
330 | ||
331 | if (printed_field > 0) | |
332 | fputs_filtered (", ", stream); | |
333 | ||
334 | field_name = TYPE_FIELD_NAME (type, index); | |
335 | if (field_name != NULL) | |
336 | { | |
337 | fputs_filtered (field_name, stream); | |
338 | fputs_filtered (" = ", stream); | |
339 | } | |
340 | ||
341 | val_print (value_type (field), | |
04d59df6 WT |
342 | value_embedded_offset (field), |
343 | value_address (field), stream, recurse + 1, | |
344 | field, options, current_language); | |
345 | ||
346 | ++printed_field; | |
347 | } | |
348 | } | |
9eec4d1e | 349 | fprintf_filtered (stream, " )"); |
2a5e440c WZ |
350 | break; |
351 | ||
e88acd96 TT |
352 | case TYPE_CODE_REF: |
353 | case TYPE_CODE_FUNC: | |
354 | case TYPE_CODE_FLAGS: | |
355 | case TYPE_CODE_FLT: | |
356 | case TYPE_CODE_VOID: | |
357 | case TYPE_CODE_ERROR: | |
358 | case TYPE_CODE_RANGE: | |
359 | case TYPE_CODE_UNDEF: | |
360 | case TYPE_CODE_COMPLEX: | |
361 | case TYPE_CODE_BOOL: | |
362 | case TYPE_CODE_CHAR: | |
c906108c | 363 | default: |
e8b24d9f | 364 | generic_val_print (type, embedded_offset, address, |
e88acd96 TT |
365 | stream, recurse, original_value, options, |
366 | &f_decorations); | |
367 | break; | |
c906108c SS |
368 | } |
369 | gdb_flush (stream); | |
c906108c SS |
370 | } |
371 | ||
372 | static void | |
3977b71f | 373 | info_common_command_for_block (const struct block *block, const char *comname, |
4357ac6c | 374 | int *any_printed) |
c906108c | 375 | { |
4357ac6c TT |
376 | struct block_iterator iter; |
377 | struct symbol *sym; | |
4357ac6c TT |
378 | struct value_print_options opts; |
379 | ||
380 | get_user_print_options (&opts); | |
381 | ||
382 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
383 | if (SYMBOL_DOMAIN (sym) == COMMON_BLOCK_DOMAIN) | |
384 | { | |
17a40b44 | 385 | const struct common_block *common = SYMBOL_VALUE_COMMON_BLOCK (sym); |
4357ac6c TT |
386 | size_t index; |
387 | ||
5a352474 | 388 | gdb_assert (SYMBOL_CLASS (sym) == LOC_COMMON_BLOCK); |
4357ac6c TT |
389 | |
390 | if (comname && (!SYMBOL_LINKAGE_NAME (sym) | |
391 | || strcmp (comname, SYMBOL_LINKAGE_NAME (sym)) != 0)) | |
392 | continue; | |
393 | ||
394 | if (*any_printed) | |
395 | putchar_filtered ('\n'); | |
396 | else | |
397 | *any_printed = 1; | |
398 | if (SYMBOL_PRINT_NAME (sym)) | |
399 | printf_filtered (_("Contents of F77 COMMON block '%s':\n"), | |
400 | SYMBOL_PRINT_NAME (sym)); | |
401 | else | |
402 | printf_filtered (_("Contents of blank COMMON block:\n")); | |
403 | ||
404 | for (index = 0; index < common->n_entries; index++) | |
405 | { | |
406 | struct value *val = NULL; | |
4357ac6c TT |
407 | |
408 | printf_filtered ("%s = ", | |
409 | SYMBOL_PRINT_NAME (common->contents[index])); | |
410 | ||
492d29ea | 411 | TRY |
4357ac6c TT |
412 | { |
413 | val = value_of_variable (common->contents[index], block); | |
414 | value_print (val, gdb_stdout, &opts); | |
415 | } | |
416 | ||
492d29ea PA |
417 | CATCH (except, RETURN_MASK_ERROR) |
418 | { | |
419 | printf_filtered ("<error reading variable: %s>", except.message); | |
420 | } | |
421 | END_CATCH | |
422 | ||
4357ac6c TT |
423 | putchar_filtered ('\n'); |
424 | } | |
425 | } | |
c906108c SS |
426 | } |
427 | ||
428 | /* This function is used to print out the values in a given COMMON | |
0963b4bd MS |
429 | block. It will always use the most local common block of the |
430 | given name. */ | |
c906108c | 431 | |
c5aa993b | 432 | static void |
1d12d88f | 433 | info_common_command (const char *comname, int from_tty) |
c906108c | 434 | { |
c906108c | 435 | struct frame_info *fi; |
3977b71f | 436 | const struct block *block; |
4357ac6c | 437 | int values_printed = 0; |
c5aa993b | 438 | |
c906108c SS |
439 | /* We have been told to display the contents of F77 COMMON |
440 | block supposedly visible in this function. Let us | |
441 | first make sure that it is visible and if so, let | |
0963b4bd | 442 | us display its contents. */ |
c5aa993b | 443 | |
206415a3 | 444 | fi = get_selected_frame (_("No frame selected")); |
c5aa993b | 445 | |
c906108c | 446 | /* The following is generally ripped off from stack.c's routine |
0963b4bd | 447 | print_frame_info(). */ |
c5aa993b | 448 | |
4357ac6c TT |
449 | block = get_frame_block (fi, 0); |
450 | if (block == NULL) | |
c906108c | 451 | { |
4357ac6c TT |
452 | printf_filtered (_("No symbol table info available.\n")); |
453 | return; | |
c906108c | 454 | } |
c5aa993b | 455 | |
4357ac6c | 456 | while (block) |
c906108c | 457 | { |
4357ac6c TT |
458 | info_common_command_for_block (block, comname, &values_printed); |
459 | /* After handling the function's top-level block, stop. Don't | |
460 | continue to its superblock, the block of per-file symbols. */ | |
461 | if (BLOCK_FUNCTION (block)) | |
462 | break; | |
463 | block = BLOCK_SUPERBLOCK (block); | |
c906108c | 464 | } |
c5aa993b | 465 | |
4357ac6c | 466 | if (!values_printed) |
c906108c | 467 | { |
4357ac6c TT |
468 | if (comname) |
469 | printf_filtered (_("No common block '%s'.\n"), comname); | |
c5aa993b | 470 | else |
4357ac6c | 471 | printf_filtered (_("No common blocks.\n")); |
c906108c | 472 | } |
c906108c SS |
473 | } |
474 | ||
c906108c | 475 | void |
fba45db2 | 476 | _initialize_f_valprint (void) |
c906108c SS |
477 | { |
478 | add_info ("common", info_common_command, | |
1bedd215 | 479 | _("Print out the values contained in a Fortran COMMON block.")); |
c906108c | 480 | } |