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c906108c | 1 | /* Support for printing Fortran values for GDB, the GNU debugger. |
a2bd3dcd | 2 | |
618f726f | 3 | Copyright (C) 1993-2016 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 KB |
37 | extern void _initialize_f_valprint (void); |
38 | static void info_common_command (char *, int); | |
a14ed312 | 39 | static void f77_get_dynamic_length_of_aggregate (struct type *); |
c906108c | 40 | |
c5aa993b | 41 | int f77_array_offset_tbl[MAX_FORTRAN_DIMS + 1][2]; |
c906108c SS |
42 | |
43 | /* Array which holds offsets to be applied to get a row's elements | |
0963b4bd | 44 | for a given array. Array also holds the size of each subarray. */ |
c906108c | 45 | |
c5aa993b | 46 | int |
d78df370 | 47 | f77_get_lowerbound (struct type *type) |
c906108c | 48 | { |
d78df370 JK |
49 | if (TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type)) |
50 | error (_("Lower bound may not be '*' in F77")); | |
c5aa993b | 51 | |
d78df370 | 52 | return TYPE_ARRAY_LOWER_BOUND_VALUE (type); |
c906108c SS |
53 | } |
54 | ||
c5aa993b | 55 | int |
d78df370 | 56 | f77_get_upperbound (struct type *type) |
c906108c | 57 | { |
d78df370 | 58 | if (TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type)) |
c906108c | 59 | { |
d78df370 JK |
60 | /* We have an assumed size array on our hands. Assume that |
61 | upper_bound == lower_bound so that we show at least 1 element. | |
62 | If the user wants to see more elements, let him manually ask for 'em | |
63 | and we'll subscript the array and show him. */ | |
64 | ||
65 | return f77_get_lowerbound (type); | |
c906108c | 66 | } |
d78df370 JK |
67 | |
68 | return TYPE_ARRAY_UPPER_BOUND_VALUE (type); | |
c906108c SS |
69 | } |
70 | ||
0963b4bd | 71 | /* Obtain F77 adjustable array dimensions. */ |
c906108c SS |
72 | |
73 | static void | |
fba45db2 | 74 | f77_get_dynamic_length_of_aggregate (struct type *type) |
c906108c SS |
75 | { |
76 | int upper_bound = -1; | |
c5aa993b | 77 | int lower_bound = 1; |
c5aa993b | 78 | |
c906108c SS |
79 | /* Recursively go all the way down into a possibly multi-dimensional |
80 | F77 array and get the bounds. For simple arrays, this is pretty | |
81 | easy but when the bounds are dynamic, we must be very careful | |
82 | to add up all the lengths correctly. Not doing this right | |
83 | will lead to horrendous-looking arrays in parameter lists. | |
c5aa993b | 84 | |
c906108c | 85 | This function also works for strings which behave very |
c5aa993b JM |
86 | similarly to arrays. */ |
87 | ||
88 | if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY | |
89 | || TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRING) | |
c906108c | 90 | f77_get_dynamic_length_of_aggregate (TYPE_TARGET_TYPE (type)); |
c5aa993b JM |
91 | |
92 | /* Recursion ends here, start setting up lengths. */ | |
d78df370 JK |
93 | lower_bound = f77_get_lowerbound (type); |
94 | upper_bound = f77_get_upperbound (type); | |
c5aa993b | 95 | |
0963b4bd | 96 | /* Patch in a valid length value. */ |
c5aa993b | 97 | |
c906108c | 98 | TYPE_LENGTH (type) = |
3e43a32a MS |
99 | (upper_bound - lower_bound + 1) |
100 | * TYPE_LENGTH (check_typedef (TYPE_TARGET_TYPE (type))); | |
c5aa993b | 101 | } |
c906108c | 102 | |
c906108c SS |
103 | /* Actual function which prints out F77 arrays, Valaddr == address in |
104 | the superior. Address == the address in the inferior. */ | |
7b0090c3 | 105 | |
c5aa993b | 106 | static void |
a2bd3dcd | 107 | f77_print_array_1 (int nss, int ndimensions, struct type *type, |
490f124f PA |
108 | const gdb_byte *valaddr, |
109 | int embedded_offset, CORE_ADDR address, | |
79a45b7d | 110 | struct ui_file *stream, int recurse, |
0e03807e | 111 | const struct value *val, |
79a45b7d | 112 | const struct value_print_options *options, |
b3cacbee | 113 | int *elts) |
c906108c | 114 | { |
3e2e34f8 KB |
115 | struct type *range_type = TYPE_INDEX_TYPE (check_typedef (type)); |
116 | CORE_ADDR addr = address + embedded_offset; | |
117 | LONGEST lowerbound, upperbound; | |
c906108c | 118 | int i; |
c5aa993b | 119 | |
3e2e34f8 KB |
120 | get_discrete_bounds (range_type, &lowerbound, &upperbound); |
121 | ||
c906108c SS |
122 | if (nss != ndimensions) |
123 | { | |
3e2e34f8 KB |
124 | size_t dim_size = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); |
125 | size_t offs = 0; | |
126 | ||
127 | for (i = lowerbound; | |
128 | (i < upperbound + 1 && (*elts) < options->print_max); | |
3e43a32a | 129 | i++) |
c906108c | 130 | { |
3e2e34f8 KB |
131 | struct value *subarray = value_from_contents_and_address |
132 | (TYPE_TARGET_TYPE (type), value_contents_for_printing_const (val) | |
133 | + offs, addr + offs); | |
134 | ||
c906108c | 135 | fprintf_filtered (stream, "( "); |
3e2e34f8 KB |
136 | f77_print_array_1 (nss + 1, ndimensions, value_type (subarray), |
137 | value_contents_for_printing (subarray), | |
138 | value_embedded_offset (subarray), | |
139 | value_address (subarray), | |
140 | stream, recurse, subarray, options, elts); | |
141 | offs += dim_size; | |
c906108c SS |
142 | fprintf_filtered (stream, ") "); |
143 | } | |
3e2e34f8 | 144 | if (*elts >= options->print_max && i < upperbound) |
b3cacbee | 145 | fprintf_filtered (stream, "..."); |
c906108c SS |
146 | } |
147 | else | |
148 | { | |
3e2e34f8 | 149 | for (i = lowerbound; i < upperbound + 1 && (*elts) < options->print_max; |
7b0090c3 | 150 | i++, (*elts)++) |
c906108c | 151 | { |
3e2e34f8 KB |
152 | struct value *elt = value_subscript ((struct value *)val, i); |
153 | ||
154 | val_print (value_type (elt), | |
155 | value_contents_for_printing (elt), | |
156 | value_embedded_offset (elt), | |
157 | value_address (elt), stream, recurse, | |
158 | elt, options, current_language); | |
c906108c | 159 | |
3e2e34f8 | 160 | if (i != upperbound) |
c5aa993b JM |
161 | fprintf_filtered (stream, ", "); |
162 | ||
79a45b7d | 163 | if ((*elts == options->print_max - 1) |
3e2e34f8 | 164 | && (i != upperbound)) |
c906108c SS |
165 | fprintf_filtered (stream, "..."); |
166 | } | |
167 | } | |
168 | } | |
169 | ||
170 | /* This function gets called to print an F77 array, we set up some | |
0963b4bd | 171 | stuff and then immediately call f77_print_array_1(). */ |
c906108c | 172 | |
c5aa993b | 173 | static void |
fc1a4b47 | 174 | f77_print_array (struct type *type, const gdb_byte *valaddr, |
490f124f | 175 | int embedded_offset, |
a2bd3dcd | 176 | CORE_ADDR address, struct ui_file *stream, |
0e03807e TT |
177 | int recurse, |
178 | const struct value *val, | |
179 | const struct value_print_options *options) | |
c906108c | 180 | { |
c5aa993b | 181 | int ndimensions; |
b3cacbee | 182 | int elts = 0; |
c5aa993b JM |
183 | |
184 | ndimensions = calc_f77_array_dims (type); | |
185 | ||
c906108c | 186 | if (ndimensions > MAX_FORTRAN_DIMS || ndimensions < 0) |
3e43a32a MS |
187 | error (_("\ |
188 | Type node corrupt! F77 arrays cannot have %d subscripts (%d Max)"), | |
c906108c | 189 | ndimensions, MAX_FORTRAN_DIMS); |
c5aa993b | 190 | |
490f124f PA |
191 | f77_print_array_1 (1, ndimensions, type, valaddr, embedded_offset, |
192 | address, stream, recurse, val, options, &elts); | |
c5aa993b | 193 | } |
c906108c | 194 | \f |
c5aa993b | 195 | |
e88acd96 TT |
196 | /* Decorations for Fortran. */ |
197 | ||
198 | static const struct generic_val_print_decorations f_decorations = | |
199 | { | |
200 | "(", | |
201 | ",", | |
202 | ")", | |
203 | ".TRUE.", | |
204 | ".FALSE.", | |
205 | "VOID", | |
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 |
fc1a4b47 | 212 | f_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, |
79a45b7d | 213 | CORE_ADDR address, struct ui_file *stream, int recurse, |
0e03807e | 214 | const 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); |
0963b4bd | 219 | unsigned int i = 0; /* Number of characters printed. */ |
c906108c | 220 | struct type *elttype; |
c906108c | 221 | CORE_ADDR addr; |
2a5e440c | 222 | int index; |
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 | { |
ab2188aa PA |
257 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
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); | |
293 | i = val_print_string (TYPE_TARGET_TYPE (type), NULL, addr, -1, | |
294 | stream, options); | |
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); | |
ab2188aa | 307 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
eb0b0463 | 308 | original_value, &opts, 0, stream); |
79a45b7d | 309 | } |
c906108c SS |
310 | else |
311 | { | |
490f124f | 312 | val_print_type_code_int (type, valaddr + embedded_offset, stream); |
c906108c SS |
313 | /* C and C++ has no single byte int type, char is used instead. |
314 | Since we don't know whether the value is really intended to | |
315 | be used as an integer or a character, print the character | |
0963b4bd | 316 | equivalent as well. */ |
e88acd96 | 317 | if (TYPE_LENGTH (type) == 1) |
c906108c | 318 | { |
490f124f PA |
319 | LONGEST c; |
320 | ||
c906108c | 321 | fputs_filtered (" ", stream); |
490f124f PA |
322 | c = unpack_long (type, valaddr + embedded_offset); |
323 | LA_PRINT_CHAR ((unsigned char) c, type, stream); | |
c906108c SS |
324 | } |
325 | } | |
326 | break; | |
c5aa993b | 327 | |
2a5e440c | 328 | case TYPE_CODE_STRUCT: |
9eec4d1e | 329 | case TYPE_CODE_UNION: |
2a5e440c WZ |
330 | /* Starting from the Fortran 90 standard, Fortran supports derived |
331 | types. */ | |
9eec4d1e | 332 | fprintf_filtered (stream, "( "); |
2a5e440c WZ |
333 | for (index = 0; index < TYPE_NFIELDS (type); index++) |
334 | { | |
3e2e34f8 KB |
335 | struct value *field = value_field |
336 | ((struct value *)original_value, index); | |
337 | ||
338 | val_print (value_type (field), | |
339 | value_contents_for_printing (field), | |
340 | value_embedded_offset (field), | |
341 | value_address (field), stream, recurse + 1, | |
342 | field, options, current_language); | |
bb9bcb69 | 343 | |
2a5e440c WZ |
344 | if (index != TYPE_NFIELDS (type) - 1) |
345 | fputs_filtered (", ", stream); | |
346 | } | |
9eec4d1e | 347 | fprintf_filtered (stream, " )"); |
2a5e440c WZ |
348 | break; |
349 | ||
e88acd96 TT |
350 | case TYPE_CODE_REF: |
351 | case TYPE_CODE_FUNC: | |
352 | case TYPE_CODE_FLAGS: | |
353 | case TYPE_CODE_FLT: | |
354 | case TYPE_CODE_VOID: | |
355 | case TYPE_CODE_ERROR: | |
356 | case TYPE_CODE_RANGE: | |
357 | case TYPE_CODE_UNDEF: | |
358 | case TYPE_CODE_COMPLEX: | |
359 | case TYPE_CODE_BOOL: | |
360 | case TYPE_CODE_CHAR: | |
c906108c | 361 | default: |
e88acd96 TT |
362 | generic_val_print (type, valaddr, embedded_offset, address, |
363 | stream, recurse, original_value, options, | |
364 | &f_decorations); | |
365 | break; | |
c906108c SS |
366 | } |
367 | gdb_flush (stream); | |
c906108c SS |
368 | } |
369 | ||
370 | static void | |
3977b71f | 371 | info_common_command_for_block (const struct block *block, const char *comname, |
4357ac6c | 372 | int *any_printed) |
c906108c | 373 | { |
4357ac6c TT |
374 | struct block_iterator iter; |
375 | struct symbol *sym; | |
376 | const char *name; | |
377 | struct value_print_options opts; | |
378 | ||
379 | get_user_print_options (&opts); | |
380 | ||
381 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
382 | if (SYMBOL_DOMAIN (sym) == COMMON_BLOCK_DOMAIN) | |
383 | { | |
17a40b44 | 384 | const struct common_block *common = SYMBOL_VALUE_COMMON_BLOCK (sym); |
4357ac6c TT |
385 | size_t index; |
386 | ||
5a352474 | 387 | gdb_assert (SYMBOL_CLASS (sym) == LOC_COMMON_BLOCK); |
4357ac6c TT |
388 | |
389 | if (comname && (!SYMBOL_LINKAGE_NAME (sym) | |
390 | || strcmp (comname, SYMBOL_LINKAGE_NAME (sym)) != 0)) | |
391 | continue; | |
392 | ||
393 | if (*any_printed) | |
394 | putchar_filtered ('\n'); | |
395 | else | |
396 | *any_printed = 1; | |
397 | if (SYMBOL_PRINT_NAME (sym)) | |
398 | printf_filtered (_("Contents of F77 COMMON block '%s':\n"), | |
399 | SYMBOL_PRINT_NAME (sym)); | |
400 | else | |
401 | printf_filtered (_("Contents of blank COMMON block:\n")); | |
402 | ||
403 | for (index = 0; index < common->n_entries; index++) | |
404 | { | |
405 | struct value *val = NULL; | |
4357ac6c TT |
406 | |
407 | printf_filtered ("%s = ", | |
408 | SYMBOL_PRINT_NAME (common->contents[index])); | |
409 | ||
492d29ea | 410 | TRY |
4357ac6c TT |
411 | { |
412 | val = value_of_variable (common->contents[index], block); | |
413 | value_print (val, gdb_stdout, &opts); | |
414 | } | |
415 | ||
492d29ea PA |
416 | CATCH (except, RETURN_MASK_ERROR) |
417 | { | |
418 | printf_filtered ("<error reading variable: %s>", except.message); | |
419 | } | |
420 | END_CATCH | |
421 | ||
4357ac6c TT |
422 | putchar_filtered ('\n'); |
423 | } | |
424 | } | |
c906108c SS |
425 | } |
426 | ||
427 | /* This function is used to print out the values in a given COMMON | |
0963b4bd MS |
428 | block. It will always use the most local common block of the |
429 | given name. */ | |
c906108c | 430 | |
c5aa993b | 431 | static void |
fba45db2 | 432 | info_common_command (char *comname, int from_tty) |
c906108c | 433 | { |
c906108c | 434 | struct frame_info *fi; |
3977b71f | 435 | const struct block *block; |
4357ac6c | 436 | int values_printed = 0; |
c5aa993b | 437 | |
c906108c SS |
438 | /* We have been told to display the contents of F77 COMMON |
439 | block supposedly visible in this function. Let us | |
440 | first make sure that it is visible and if so, let | |
0963b4bd | 441 | us display its contents. */ |
c5aa993b | 442 | |
206415a3 | 443 | fi = get_selected_frame (_("No frame selected")); |
c5aa993b | 444 | |
c906108c | 445 | /* The following is generally ripped off from stack.c's routine |
0963b4bd | 446 | print_frame_info(). */ |
c5aa993b | 447 | |
4357ac6c TT |
448 | block = get_frame_block (fi, 0); |
449 | if (block == NULL) | |
c906108c | 450 | { |
4357ac6c TT |
451 | printf_filtered (_("No symbol table info available.\n")); |
452 | return; | |
c906108c | 453 | } |
c5aa993b | 454 | |
4357ac6c | 455 | while (block) |
c906108c | 456 | { |
4357ac6c TT |
457 | info_common_command_for_block (block, comname, &values_printed); |
458 | /* After handling the function's top-level block, stop. Don't | |
459 | continue to its superblock, the block of per-file symbols. */ | |
460 | if (BLOCK_FUNCTION (block)) | |
461 | break; | |
462 | block = BLOCK_SUPERBLOCK (block); | |
c906108c | 463 | } |
c5aa993b | 464 | |
4357ac6c | 465 | if (!values_printed) |
c906108c | 466 | { |
4357ac6c TT |
467 | if (comname) |
468 | printf_filtered (_("No common block '%s'.\n"), comname); | |
c5aa993b | 469 | else |
4357ac6c | 470 | printf_filtered (_("No common blocks.\n")); |
c906108c | 471 | } |
c906108c SS |
472 | } |
473 | ||
c906108c | 474 | void |
fba45db2 | 475 | _initialize_f_valprint (void) |
c906108c SS |
476 | { |
477 | add_info ("common", info_common_command, | |
1bedd215 | 478 | _("Print out the values contained in a Fortran COMMON block.")); |
c906108c | 479 | } |