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 info_common_command (char *, int); |
a14ed312 | 38 | static void f77_get_dynamic_length_of_aggregate (struct type *); |
c906108c | 39 | |
c5aa993b | 40 | int f77_array_offset_tbl[MAX_FORTRAN_DIMS + 1][2]; |
c906108c SS |
41 | |
42 | /* Array which holds offsets to be applied to get a row's elements | |
0963b4bd | 43 | for a given array. Array also holds the size of each subarray. */ |
c906108c | 44 | |
c5aa993b | 45 | int |
d78df370 | 46 | f77_get_lowerbound (struct type *type) |
c906108c | 47 | { |
d78df370 JK |
48 | if (TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type)) |
49 | error (_("Lower bound may not be '*' in F77")); | |
c5aa993b | 50 | |
d78df370 | 51 | return TYPE_ARRAY_LOWER_BOUND_VALUE (type); |
c906108c SS |
52 | } |
53 | ||
c5aa993b | 54 | int |
d78df370 | 55 | f77_get_upperbound (struct type *type) |
c906108c | 56 | { |
d78df370 | 57 | if (TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type)) |
c906108c | 58 | { |
d78df370 JK |
59 | /* We have an assumed size array on our hands. Assume that |
60 | upper_bound == lower_bound so that we show at least 1 element. | |
61 | If the user wants to see more elements, let him manually ask for 'em | |
62 | and we'll subscript the array and show him. */ | |
63 | ||
64 | return f77_get_lowerbound (type); | |
c906108c | 65 | } |
d78df370 JK |
66 | |
67 | return TYPE_ARRAY_UPPER_BOUND_VALUE (type); | |
c906108c SS |
68 | } |
69 | ||
0963b4bd | 70 | /* Obtain F77 adjustable array dimensions. */ |
c906108c SS |
71 | |
72 | static void | |
fba45db2 | 73 | f77_get_dynamic_length_of_aggregate (struct type *type) |
c906108c SS |
74 | { |
75 | int upper_bound = -1; | |
c5aa993b | 76 | int lower_bound = 1; |
c5aa993b | 77 | |
c906108c SS |
78 | /* Recursively go all the way down into a possibly multi-dimensional |
79 | F77 array and get the bounds. For simple arrays, this is pretty | |
80 | easy but when the bounds are dynamic, we must be very careful | |
81 | to add up all the lengths correctly. Not doing this right | |
82 | will lead to horrendous-looking arrays in parameter lists. | |
c5aa993b | 83 | |
c906108c | 84 | This function also works for strings which behave very |
c5aa993b JM |
85 | similarly to arrays. */ |
86 | ||
87 | if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY | |
88 | || TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRING) | |
c906108c | 89 | f77_get_dynamic_length_of_aggregate (TYPE_TARGET_TYPE (type)); |
c5aa993b JM |
90 | |
91 | /* Recursion ends here, start setting up lengths. */ | |
d78df370 JK |
92 | lower_bound = f77_get_lowerbound (type); |
93 | upper_bound = f77_get_upperbound (type); | |
c5aa993b | 94 | |
0963b4bd | 95 | /* Patch in a valid length value. */ |
c5aa993b | 96 | |
c906108c | 97 | TYPE_LENGTH (type) = |
3e43a32a MS |
98 | (upper_bound - lower_bound + 1) |
99 | * TYPE_LENGTH (check_typedef (TYPE_TARGET_TYPE (type))); | |
c5aa993b | 100 | } |
c906108c | 101 | |
c906108c SS |
102 | /* Actual function which prints out F77 arrays, Valaddr == address in |
103 | the superior. Address == the address in the inferior. */ | |
7b0090c3 | 104 | |
c5aa993b | 105 | static void |
a2bd3dcd | 106 | f77_print_array_1 (int nss, int ndimensions, struct type *type, |
490f124f PA |
107 | const gdb_byte *valaddr, |
108 | int embedded_offset, CORE_ADDR address, | |
79a45b7d | 109 | struct ui_file *stream, int recurse, |
0e03807e | 110 | const struct value *val, |
79a45b7d | 111 | const struct value_print_options *options, |
b3cacbee | 112 | int *elts) |
c906108c | 113 | { |
3e2e34f8 KB |
114 | struct type *range_type = TYPE_INDEX_TYPE (check_typedef (type)); |
115 | CORE_ADDR addr = address + embedded_offset; | |
116 | LONGEST lowerbound, upperbound; | |
c906108c | 117 | int i; |
c5aa993b | 118 | |
3e2e34f8 KB |
119 | get_discrete_bounds (range_type, &lowerbound, &upperbound); |
120 | ||
c906108c SS |
121 | if (nss != ndimensions) |
122 | { | |
3e2e34f8 KB |
123 | size_t dim_size = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); |
124 | size_t offs = 0; | |
125 | ||
126 | for (i = lowerbound; | |
127 | (i < upperbound + 1 && (*elts) < options->print_max); | |
3e43a32a | 128 | i++) |
c906108c | 129 | { |
3e2e34f8 KB |
130 | struct value *subarray = value_from_contents_and_address |
131 | (TYPE_TARGET_TYPE (type), value_contents_for_printing_const (val) | |
132 | + offs, addr + offs); | |
133 | ||
c906108c | 134 | fprintf_filtered (stream, "( "); |
3e2e34f8 KB |
135 | f77_print_array_1 (nss + 1, ndimensions, value_type (subarray), |
136 | value_contents_for_printing (subarray), | |
137 | value_embedded_offset (subarray), | |
138 | value_address (subarray), | |
139 | stream, recurse, subarray, options, elts); | |
140 | offs += dim_size; | |
c906108c SS |
141 | fprintf_filtered (stream, ") "); |
142 | } | |
3e2e34f8 | 143 | if (*elts >= options->print_max && i < upperbound) |
b3cacbee | 144 | fprintf_filtered (stream, "..."); |
c906108c SS |
145 | } |
146 | else | |
147 | { | |
3e2e34f8 | 148 | for (i = lowerbound; i < upperbound + 1 && (*elts) < options->print_max; |
7b0090c3 | 149 | i++, (*elts)++) |
c906108c | 150 | { |
3e2e34f8 KB |
151 | struct value *elt = value_subscript ((struct value *)val, i); |
152 | ||
153 | val_print (value_type (elt), | |
3e2e34f8 KB |
154 | value_embedded_offset (elt), |
155 | value_address (elt), stream, recurse, | |
156 | elt, options, current_language); | |
c906108c | 157 | |
3e2e34f8 | 158 | if (i != upperbound) |
c5aa993b JM |
159 | fprintf_filtered (stream, ", "); |
160 | ||
79a45b7d | 161 | if ((*elts == options->print_max - 1) |
3e2e34f8 | 162 | && (i != upperbound)) |
c906108c SS |
163 | fprintf_filtered (stream, "..."); |
164 | } | |
165 | } | |
166 | } | |
167 | ||
168 | /* This function gets called to print an F77 array, we set up some | |
0963b4bd | 169 | stuff and then immediately call f77_print_array_1(). */ |
c906108c | 170 | |
c5aa993b | 171 | static void |
fc1a4b47 | 172 | f77_print_array (struct type *type, const gdb_byte *valaddr, |
490f124f | 173 | int embedded_offset, |
a2bd3dcd | 174 | CORE_ADDR address, struct ui_file *stream, |
0e03807e TT |
175 | int recurse, |
176 | const struct value *val, | |
177 | const struct value_print_options *options) | |
c906108c | 178 | { |
c5aa993b | 179 | int ndimensions; |
b3cacbee | 180 | int elts = 0; |
c5aa993b JM |
181 | |
182 | ndimensions = calc_f77_array_dims (type); | |
183 | ||
c906108c | 184 | if (ndimensions > MAX_FORTRAN_DIMS || ndimensions < 0) |
3e43a32a MS |
185 | error (_("\ |
186 | Type node corrupt! F77 arrays cannot have %d subscripts (%d Max)"), | |
c906108c | 187 | ndimensions, MAX_FORTRAN_DIMS); |
c5aa993b | 188 | |
490f124f PA |
189 | f77_print_array_1 (1, ndimensions, type, valaddr, embedded_offset, |
190 | address, stream, recurse, val, options, &elts); | |
c5aa993b | 191 | } |
c906108c | 192 | \f |
c5aa993b | 193 | |
e88acd96 TT |
194 | /* Decorations for Fortran. */ |
195 | ||
196 | static const struct generic_val_print_decorations f_decorations = | |
197 | { | |
198 | "(", | |
199 | ",", | |
200 | ")", | |
201 | ".TRUE.", | |
202 | ".FALSE.", | |
203 | "VOID", | |
00272ec4 TT |
204 | "{", |
205 | "}" | |
e88acd96 TT |
206 | }; |
207 | ||
32b72a42 | 208 | /* See val_print for a description of the various parameters of this |
d3eab38a | 209 | function; they are identical. */ |
c906108c | 210 | |
d3eab38a | 211 | void |
e8b24d9f | 212 | f_val_print (struct type *type, int embedded_offset, |
79a45b7d | 213 | CORE_ADDR address, struct ui_file *stream, int recurse, |
e8b24d9f | 214 | struct value *original_value, |
79a45b7d | 215 | const struct value_print_options *options) |
c906108c | 216 | { |
50810684 | 217 | struct gdbarch *gdbarch = get_type_arch (type); |
e17a4113 | 218 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
04d59df6 | 219 | int printed_field = 0; /* Number of fields printed. */ |
c906108c | 220 | struct type *elttype; |
c906108c | 221 | CORE_ADDR addr; |
2a5e440c | 222 | int index; |
e8b24d9f | 223 | const gdb_byte *valaddr =value_contents_for_printing (original_value); |
c5aa993b | 224 | |
f168693b | 225 | type = check_typedef (type); |
c906108c SS |
226 | switch (TYPE_CODE (type)) |
227 | { | |
c5aa993b | 228 | case TYPE_CODE_STRING: |
c906108c | 229 | f77_get_dynamic_length_of_aggregate (type); |
50810684 | 230 | LA_PRINT_STRING (stream, builtin_type (gdbarch)->builtin_char, |
490f124f PA |
231 | valaddr + embedded_offset, |
232 | TYPE_LENGTH (type), NULL, 0, options); | |
c906108c | 233 | break; |
c5aa993b | 234 | |
c906108c | 235 | case TYPE_CODE_ARRAY: |
3b2b8fea TT |
236 | if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_CHAR) |
237 | { | |
238 | fprintf_filtered (stream, "("); | |
239 | f77_print_array (type, valaddr, embedded_offset, | |
240 | address, stream, recurse, original_value, options); | |
241 | fprintf_filtered (stream, ")"); | |
242 | } | |
243 | else | |
244 | { | |
245 | struct type *ch_type = TYPE_TARGET_TYPE (type); | |
246 | ||
247 | f77_get_dynamic_length_of_aggregate (type); | |
248 | LA_PRINT_STRING (stream, ch_type, | |
249 | valaddr + embedded_offset, | |
250 | TYPE_LENGTH (type) / TYPE_LENGTH (ch_type), | |
251 | NULL, 0, options); | |
252 | } | |
c906108c | 253 | break; |
7e86466e | 254 | |
c906108c | 255 | case TYPE_CODE_PTR: |
79a45b7d | 256 | if (options->format && options->format != 's') |
c906108c | 257 | { |
e8b24d9f | 258 | val_print_scalar_formatted (type, embedded_offset, |
ab2188aa | 259 | original_value, options, 0, stream); |
c906108c SS |
260 | break; |
261 | } | |
262 | else | |
263 | { | |
b012acdd TT |
264 | int want_space = 0; |
265 | ||
490f124f | 266 | addr = unpack_pointer (type, valaddr + embedded_offset); |
c906108c | 267 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); |
c5aa993b | 268 | |
c906108c SS |
269 | if (TYPE_CODE (elttype) == TYPE_CODE_FUNC) |
270 | { | |
271 | /* Try to print what function it points to. */ | |
edf0c1b7 | 272 | print_function_pointer_address (options, gdbarch, addr, stream); |
d3eab38a | 273 | return; |
c906108c | 274 | } |
c5aa993b | 275 | |
9cb709b6 TT |
276 | if (options->symbol_print) |
277 | want_space = print_address_demangle (options, gdbarch, addr, | |
278 | stream, demangle); | |
279 | else if (options->addressprint && options->format != 's') | |
b012acdd TT |
280 | { |
281 | fputs_filtered (paddress (gdbarch, addr), stream); | |
282 | want_space = 1; | |
283 | } | |
c5aa993b | 284 | |
c906108c SS |
285 | /* For a pointer to char or unsigned char, also print the string |
286 | pointed to, unless pointer is null. */ | |
287 | if (TYPE_LENGTH (elttype) == 1 | |
288 | && TYPE_CODE (elttype) == TYPE_CODE_INT | |
79a45b7d | 289 | && (options->format == 0 || options->format == 's') |
c906108c | 290 | && addr != 0) |
b012acdd TT |
291 | { |
292 | if (want_space) | |
293 | fputs_filtered (" ", stream); | |
78cc6c2d TT |
294 | val_print_string (TYPE_TARGET_TYPE (type), NULL, addr, -1, |
295 | stream, options); | |
b012acdd | 296 | } |
d3eab38a | 297 | return; |
7e86466e RH |
298 | } |
299 | break; | |
300 | ||
c906108c | 301 | case TYPE_CODE_INT: |
79a45b7d TT |
302 | if (options->format || options->output_format) |
303 | { | |
304 | struct value_print_options opts = *options; | |
bb9bcb69 | 305 | |
79a45b7d TT |
306 | opts.format = (options->format ? options->format |
307 | : options->output_format); | |
e8b24d9f | 308 | val_print_scalar_formatted (type, embedded_offset, |
eb0b0463 | 309 | original_value, &opts, 0, stream); |
79a45b7d | 310 | } |
c906108c | 311 | else |
469412dd CW |
312 | val_print_scalar_formatted (type, embedded_offset, |
313 | original_value, options, 0, stream); | |
c906108c | 314 | break; |
c5aa993b | 315 | |
2a5e440c | 316 | case TYPE_CODE_STRUCT: |
9eec4d1e | 317 | case TYPE_CODE_UNION: |
2a5e440c WZ |
318 | /* Starting from the Fortran 90 standard, Fortran supports derived |
319 | types. */ | |
9eec4d1e | 320 | fprintf_filtered (stream, "( "); |
2a5e440c WZ |
321 | for (index = 0; index < TYPE_NFIELDS (type); index++) |
322 | { | |
3e2e34f8 KB |
323 | struct value *field = value_field |
324 | ((struct value *)original_value, index); | |
325 | ||
04d59df6 | 326 | struct type *field_type = check_typedef (TYPE_FIELD_TYPE (type, index)); |
bb9bcb69 | 327 | |
04d59df6 WT |
328 | |
329 | if (TYPE_CODE (field_type) != TYPE_CODE_FUNC) | |
330 | { | |
331 | const char *field_name; | |
332 | ||
333 | if (printed_field > 0) | |
334 | fputs_filtered (", ", stream); | |
335 | ||
336 | field_name = TYPE_FIELD_NAME (type, index); | |
337 | if (field_name != NULL) | |
338 | { | |
339 | fputs_filtered (field_name, stream); | |
340 | fputs_filtered (" = ", stream); | |
341 | } | |
342 | ||
343 | val_print (value_type (field), | |
04d59df6 WT |
344 | value_embedded_offset (field), |
345 | value_address (field), stream, recurse + 1, | |
346 | field, options, current_language); | |
347 | ||
348 | ++printed_field; | |
349 | } | |
350 | } | |
9eec4d1e | 351 | fprintf_filtered (stream, " )"); |
2a5e440c WZ |
352 | break; |
353 | ||
e88acd96 TT |
354 | case TYPE_CODE_REF: |
355 | case TYPE_CODE_FUNC: | |
356 | case TYPE_CODE_FLAGS: | |
357 | case TYPE_CODE_FLT: | |
358 | case TYPE_CODE_VOID: | |
359 | case TYPE_CODE_ERROR: | |
360 | case TYPE_CODE_RANGE: | |
361 | case TYPE_CODE_UNDEF: | |
362 | case TYPE_CODE_COMPLEX: | |
363 | case TYPE_CODE_BOOL: | |
364 | case TYPE_CODE_CHAR: | |
c906108c | 365 | default: |
e8b24d9f | 366 | generic_val_print (type, embedded_offset, address, |
e88acd96 TT |
367 | stream, recurse, original_value, options, |
368 | &f_decorations); | |
369 | break; | |
c906108c SS |
370 | } |
371 | gdb_flush (stream); | |
c906108c SS |
372 | } |
373 | ||
374 | static void | |
3977b71f | 375 | info_common_command_for_block (const struct block *block, const char *comname, |
4357ac6c | 376 | int *any_printed) |
c906108c | 377 | { |
4357ac6c TT |
378 | struct block_iterator iter; |
379 | struct symbol *sym; | |
380 | const char *name; | |
381 | struct value_print_options opts; | |
382 | ||
383 | get_user_print_options (&opts); | |
384 | ||
385 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
386 | if (SYMBOL_DOMAIN (sym) == COMMON_BLOCK_DOMAIN) | |
387 | { | |
17a40b44 | 388 | const struct common_block *common = SYMBOL_VALUE_COMMON_BLOCK (sym); |
4357ac6c TT |
389 | size_t index; |
390 | ||
5a352474 | 391 | gdb_assert (SYMBOL_CLASS (sym) == LOC_COMMON_BLOCK); |
4357ac6c TT |
392 | |
393 | if (comname && (!SYMBOL_LINKAGE_NAME (sym) | |
394 | || strcmp (comname, SYMBOL_LINKAGE_NAME (sym)) != 0)) | |
395 | continue; | |
396 | ||
397 | if (*any_printed) | |
398 | putchar_filtered ('\n'); | |
399 | else | |
400 | *any_printed = 1; | |
401 | if (SYMBOL_PRINT_NAME (sym)) | |
402 | printf_filtered (_("Contents of F77 COMMON block '%s':\n"), | |
403 | SYMBOL_PRINT_NAME (sym)); | |
404 | else | |
405 | printf_filtered (_("Contents of blank COMMON block:\n")); | |
406 | ||
407 | for (index = 0; index < common->n_entries; index++) | |
408 | { | |
409 | struct value *val = NULL; | |
4357ac6c TT |
410 | |
411 | printf_filtered ("%s = ", | |
412 | SYMBOL_PRINT_NAME (common->contents[index])); | |
413 | ||
492d29ea | 414 | TRY |
4357ac6c TT |
415 | { |
416 | val = value_of_variable (common->contents[index], block); | |
417 | value_print (val, gdb_stdout, &opts); | |
418 | } | |
419 | ||
492d29ea PA |
420 | CATCH (except, RETURN_MASK_ERROR) |
421 | { | |
422 | printf_filtered ("<error reading variable: %s>", except.message); | |
423 | } | |
424 | END_CATCH | |
425 | ||
4357ac6c TT |
426 | putchar_filtered ('\n'); |
427 | } | |
428 | } | |
c906108c SS |
429 | } |
430 | ||
431 | /* This function is used to print out the values in a given COMMON | |
0963b4bd MS |
432 | block. It will always use the most local common block of the |
433 | given name. */ | |
c906108c | 434 | |
c5aa993b | 435 | static void |
fba45db2 | 436 | info_common_command (char *comname, int from_tty) |
c906108c | 437 | { |
c906108c | 438 | struct frame_info *fi; |
3977b71f | 439 | const struct block *block; |
4357ac6c | 440 | int values_printed = 0; |
c5aa993b | 441 | |
c906108c SS |
442 | /* We have been told to display the contents of F77 COMMON |
443 | block supposedly visible in this function. Let us | |
444 | first make sure that it is visible and if so, let | |
0963b4bd | 445 | us display its contents. */ |
c5aa993b | 446 | |
206415a3 | 447 | fi = get_selected_frame (_("No frame selected")); |
c5aa993b | 448 | |
c906108c | 449 | /* The following is generally ripped off from stack.c's routine |
0963b4bd | 450 | print_frame_info(). */ |
c5aa993b | 451 | |
4357ac6c TT |
452 | block = get_frame_block (fi, 0); |
453 | if (block == NULL) | |
c906108c | 454 | { |
4357ac6c TT |
455 | printf_filtered (_("No symbol table info available.\n")); |
456 | return; | |
c906108c | 457 | } |
c5aa993b | 458 | |
4357ac6c | 459 | while (block) |
c906108c | 460 | { |
4357ac6c TT |
461 | info_common_command_for_block (block, comname, &values_printed); |
462 | /* After handling the function's top-level block, stop. Don't | |
463 | continue to its superblock, the block of per-file symbols. */ | |
464 | if (BLOCK_FUNCTION (block)) | |
465 | break; | |
466 | block = BLOCK_SUPERBLOCK (block); | |
c906108c | 467 | } |
c5aa993b | 468 | |
4357ac6c | 469 | if (!values_printed) |
c906108c | 470 | { |
4357ac6c TT |
471 | if (comname) |
472 | printf_filtered (_("No common block '%s'.\n"), comname); | |
c5aa993b | 473 | else |
4357ac6c | 474 | printf_filtered (_("No common blocks.\n")); |
c906108c | 475 | } |
c906108c SS |
476 | } |
477 | ||
c906108c | 478 | void |
fba45db2 | 479 | _initialize_f_valprint (void) |
c906108c SS |
480 | { |
481 | add_info ("common", info_common_command, | |
1bedd215 | 482 | _("Print out the values contained in a Fortran COMMON block.")); |
c906108c | 483 | } |