Commit | Line | Data |
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c906108c | 1 | /* Support for printing C values for GDB, the GNU debugger. |
1bac305b | 2 | |
0b302171 JB |
3 | Copyright (C) 1986, 1988-1989, 1991-2001, 2003, 2005-2012 Free |
4 | Software Foundation, Inc. | |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 11 | (at your option) any later version. |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b | 18 | You should have received a copy of the GNU General Public License |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
20 | |
21 | #include "defs.h" | |
309367d4 | 22 | #include "gdb_string.h" |
c906108c SS |
23 | #include "symtab.h" |
24 | #include "gdbtypes.h" | |
25 | #include "expression.h" | |
26 | #include "value.h" | |
c906108c SS |
27 | #include "valprint.h" |
28 | #include "language.h" | |
29 | #include "c-lang.h" | |
015a42b4 | 30 | #include "cp-abi.h" |
e2d0e7eb | 31 | #include "target.h" |
c906108c | 32 | \f |
c5aa993b | 33 | |
96c07c5b | 34 | /* A helper for c_textual_element_type. This checks the name of the |
6c7a06a3 TT |
35 | typedef. This is bogus but it isn't apparent that the compiler |
36 | provides us the help we may need. */ | |
37 | ||
38 | static int | |
39 | textual_name (const char *name) | |
40 | { | |
41 | return (!strcmp (name, "wchar_t") | |
42 | || !strcmp (name, "char16_t") | |
43 | || !strcmp (name, "char32_t")); | |
44 | } | |
45 | ||
ea37ba09 DJ |
46 | /* Apply a heuristic to decide whether an array of TYPE or a pointer |
47 | to TYPE should be printed as a textual string. Return non-zero if | |
48 | it should, or zero if it should be treated as an array of integers | |
aff410f1 MS |
49 | or pointer to integers. FORMAT is the current format letter, or 0 |
50 | if none. | |
ea37ba09 DJ |
51 | |
52 | We guess that "char" is a character. Explicitly signed and | |
53 | unsigned character types are also characters. Integer data from | |
54 | vector types is not. The user can override this by using the /s | |
55 | format letter. */ | |
56 | ||
96c07c5b TT |
57 | int |
58 | c_textual_element_type (struct type *type, char format) | |
ea37ba09 | 59 | { |
85e306ed | 60 | struct type *true_type, *iter_type; |
ea37ba09 DJ |
61 | |
62 | if (format != 0 && format != 's') | |
63 | return 0; | |
64 | ||
85e306ed TT |
65 | /* We also rely on this for its side effect of setting up all the |
66 | typedef pointers. */ | |
67 | true_type = check_typedef (type); | |
68 | ||
ea37ba09 DJ |
69 | /* TYPE_CODE_CHAR is always textual. */ |
70 | if (TYPE_CODE (true_type) == TYPE_CODE_CHAR) | |
71 | return 1; | |
85e306ed | 72 | |
6c7a06a3 TT |
73 | /* Any other character-like types must be integral. */ |
74 | if (TYPE_CODE (true_type) != TYPE_CODE_INT) | |
75 | return 0; | |
76 | ||
85e306ed TT |
77 | /* We peel typedefs one by one, looking for a match. */ |
78 | iter_type = type; | |
79 | while (iter_type) | |
80 | { | |
81 | /* Check the name of the type. */ | |
82 | if (TYPE_NAME (iter_type) && textual_name (TYPE_NAME (iter_type))) | |
83 | return 1; | |
84 | ||
85 | if (TYPE_CODE (iter_type) != TYPE_CODE_TYPEDEF) | |
86 | break; | |
87 | ||
88 | /* Peel a single typedef. If the typedef doesn't have a target | |
89 | type, we use check_typedef and hope the result is ok -- it | |
90 | might be for C++, where wchar_t is a built-in type. */ | |
91 | if (TYPE_TARGET_TYPE (iter_type)) | |
92 | iter_type = TYPE_TARGET_TYPE (iter_type); | |
93 | else | |
94 | iter_type = check_typedef (iter_type); | |
95 | } | |
ea37ba09 DJ |
96 | |
97 | if (format == 's') | |
98 | { | |
aff410f1 MS |
99 | /* Print this as a string if we can manage it. For now, no wide |
100 | character support. */ | |
ea37ba09 DJ |
101 | if (TYPE_CODE (true_type) == TYPE_CODE_INT |
102 | && TYPE_LENGTH (true_type) == 1) | |
103 | return 1; | |
104 | } | |
105 | else | |
106 | { | |
107 | /* If a one-byte TYPE_CODE_INT is missing the not-a-character | |
108 | flag, then we treat it as text; otherwise, we assume it's | |
109 | being used as data. */ | |
110 | if (TYPE_CODE (true_type) == TYPE_CODE_INT | |
111 | && TYPE_LENGTH (true_type) == 1 | |
112 | && !TYPE_NOTTEXT (true_type)) | |
113 | return 1; | |
114 | } | |
115 | ||
116 | return 0; | |
117 | } | |
118 | ||
32b72a42 PA |
119 | /* See val_print for a description of the various parameters of this |
120 | function; they are identical. The semantics of the return value is | |
121 | also identical to val_print. */ | |
c906108c SS |
122 | |
123 | int | |
aff410f1 MS |
124 | c_val_print (struct type *type, const gdb_byte *valaddr, |
125 | int embedded_offset, CORE_ADDR address, | |
126 | struct ui_file *stream, int recurse, | |
0e03807e | 127 | const struct value *original_value, |
79a45b7d | 128 | const struct value_print_options *options) |
c906108c | 129 | { |
50810684 | 130 | struct gdbarch *gdbarch = get_type_arch (type); |
e17a4113 | 131 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
aff410f1 | 132 | unsigned int i = 0; /* Number of characters printed. */ |
c906108c | 133 | unsigned len; |
6c7a06a3 TT |
134 | struct type *elttype, *unresolved_elttype; |
135 | struct type *unresolved_type = type; | |
c906108c SS |
136 | unsigned eltlen; |
137 | LONGEST val; | |
138 | CORE_ADDR addr; | |
139 | ||
140 | CHECK_TYPEDEF (type); | |
141 | switch (TYPE_CODE (type)) | |
142 | { | |
143 | case TYPE_CODE_ARRAY: | |
6c7a06a3 TT |
144 | unresolved_elttype = TYPE_TARGET_TYPE (type); |
145 | elttype = check_typedef (unresolved_elttype); | |
146 | if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (unresolved_elttype) > 0) | |
c906108c | 147 | { |
dbc98a8b KW |
148 | LONGEST low_bound, high_bound; |
149 | ||
150 | if (!get_array_bounds (type, &low_bound, &high_bound)) | |
151 | error (_("Could not determine the array high bound")); | |
152 | ||
c906108c | 153 | eltlen = TYPE_LENGTH (elttype); |
dbc98a8b | 154 | len = high_bound - low_bound + 1; |
79a45b7d | 155 | if (options->prettyprint_arrays) |
c906108c SS |
156 | { |
157 | print_spaces_filtered (2 + 2 * recurse, stream); | |
158 | } | |
ea37ba09 | 159 | |
0e03807e TT |
160 | /* Print arrays of textual chars with a string syntax, as |
161 | long as the entire array is valid. */ | |
aff410f1 MS |
162 | if (c_textual_element_type (unresolved_elttype, |
163 | options->format) | |
9fc6d940 PA |
164 | && value_bytes_available (original_value, embedded_offset, |
165 | TYPE_LENGTH (type)) | |
0e03807e TT |
166 | && value_bits_valid (original_value, |
167 | TARGET_CHAR_BIT * embedded_offset, | |
168 | TARGET_CHAR_BIT * TYPE_LENGTH (type))) | |
c906108c | 169 | { |
aff410f1 MS |
170 | /* If requested, look for the first null char and only |
171 | print elements up to it. */ | |
79a45b7d | 172 | if (options->stop_print_at_null) |
c906108c | 173 | { |
745b8ca0 | 174 | unsigned int temp_len; |
c5aa993b | 175 | |
c906108c | 176 | for (temp_len = 0; |
6c7a06a3 TT |
177 | (temp_len < len |
178 | && temp_len < options->print_max | |
179 | && extract_unsigned_integer (valaddr + embedded_offset | |
180 | + temp_len * eltlen, | |
421d5d99 | 181 | eltlen, byte_order) != 0); |
6c7a06a3 TT |
182 | ++temp_len) |
183 | ; | |
c906108c SS |
184 | len = temp_len; |
185 | } | |
c5aa993b | 186 | |
6c7a06a3 | 187 | LA_PRINT_STRING (stream, unresolved_elttype, |
be759fcf PM |
188 | valaddr + embedded_offset, len, |
189 | NULL, 0, options); | |
c906108c SS |
190 | i = len; |
191 | } | |
192 | else | |
193 | { | |
194 | fprintf_filtered (stream, "{"); | |
195 | /* If this is a virtual function table, print the 0th | |
aff410f1 MS |
196 | entry specially, and the rest of the members |
197 | normally. */ | |
c906108c SS |
198 | if (cp_is_vtbl_ptr_type (elttype)) |
199 | { | |
200 | i = 1; | |
aff410f1 MS |
201 | fprintf_filtered (stream, _("%d vtable entries"), |
202 | len - 1); | |
c906108c SS |
203 | } |
204 | else | |
205 | { | |
206 | i = 0; | |
207 | } | |
490f124f PA |
208 | val_print_array_elements (type, valaddr, embedded_offset, |
209 | address, stream, | |
210 | recurse, original_value, options, i); | |
c906108c SS |
211 | fprintf_filtered (stream, "}"); |
212 | } | |
213 | break; | |
214 | } | |
aff410f1 MS |
215 | /* Array of unspecified length: treat like pointer to first |
216 | elt. */ | |
13163d80 | 217 | addr = address + embedded_offset; |
c906108c SS |
218 | goto print_unpacked_pointer; |
219 | ||
0d5de010 | 220 | case TYPE_CODE_MEMBERPTR: |
79a45b7d | 221 | if (options->format) |
0d5de010 | 222 | { |
ab2188aa PA |
223 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
224 | original_value, options, 0, stream); | |
0d5de010 DJ |
225 | break; |
226 | } | |
ad4820ab | 227 | cp_print_class_member (valaddr + embedded_offset, type, stream, "&"); |
0d5de010 DJ |
228 | break; |
229 | ||
230 | case TYPE_CODE_METHODPTR: | |
231 | cplus_print_method_ptr (valaddr + embedded_offset, type, stream); | |
232 | break; | |
233 | ||
c906108c | 234 | case TYPE_CODE_PTR: |
79a45b7d | 235 | if (options->format && options->format != 's') |
c906108c | 236 | { |
ab2188aa PA |
237 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
238 | original_value, options, 0, stream); | |
c906108c SS |
239 | break; |
240 | } | |
79a45b7d | 241 | if (options->vtblprint && cp_is_vtbl_ptr_type (type)) |
c906108c | 242 | { |
c5aa993b | 243 | /* Print the unmangled name if desired. */ |
c906108c | 244 | /* Print vtable entry - we only get here if we ARE using |
aff410f1 MS |
245 | -fvtable_thunks. (Otherwise, look under |
246 | TYPE_CODE_STRUCT.) */ | |
4478b372 JB |
247 | CORE_ADDR addr |
248 | = extract_typed_address (valaddr + embedded_offset, type); | |
c5504eaf | 249 | |
50810684 UW |
250 | print_function_pointer_address (gdbarch, addr, stream, |
251 | options->addressprint); | |
c906108c SS |
252 | break; |
253 | } | |
6c7a06a3 TT |
254 | unresolved_elttype = TYPE_TARGET_TYPE (type); |
255 | elttype = check_typedef (unresolved_elttype); | |
c906108c SS |
256 | { |
257 | addr = unpack_pointer (type, valaddr + embedded_offset); | |
258 | print_unpacked_pointer: | |
c906108c SS |
259 | |
260 | if (TYPE_CODE (elttype) == TYPE_CODE_FUNC) | |
261 | { | |
262 | /* Try to print what function it points to. */ | |
50810684 | 263 | print_function_pointer_address (gdbarch, addr, stream, |
79a45b7d | 264 | options->addressprint); |
aff410f1 MS |
265 | /* Return value is irrelevant except for string |
266 | pointers. */ | |
c906108c SS |
267 | return (0); |
268 | } | |
269 | ||
79a45b7d | 270 | if (options->addressprint) |
5af949e3 | 271 | fputs_filtered (paddress (gdbarch, addr), stream); |
c906108c | 272 | |
ea37ba09 | 273 | /* For a pointer to a textual type, also print the string |
c906108c | 274 | pointed to, unless pointer is null. */ |
c906108c | 275 | |
aff410f1 MS |
276 | if (c_textual_element_type (unresolved_elttype, |
277 | options->format) | |
79a45b7d | 278 | && addr != 0) |
c906108c | 279 | { |
aff410f1 MS |
280 | i = val_print_string (unresolved_elttype, NULL, |
281 | addr, -1, | |
282 | stream, options); | |
c906108c | 283 | } |
c5aa993b JM |
284 | else if (cp_is_vtbl_member (type)) |
285 | { | |
aff410f1 MS |
286 | /* Print vtbl's nicely. */ |
287 | CORE_ADDR vt_address = unpack_pointer (type, | |
288 | valaddr | |
289 | + embedded_offset); | |
c906108c SS |
290 | |
291 | struct minimal_symbol *msymbol = | |
c5aa993b | 292 | lookup_minimal_symbol_by_pc (vt_address); |
5aafa1cc PM |
293 | if ((msymbol != NULL) |
294 | && (vt_address == SYMBOL_VALUE_ADDRESS (msymbol))) | |
c906108c SS |
295 | { |
296 | fputs_filtered (" <", stream); | |
de5ad195 | 297 | fputs_filtered (SYMBOL_PRINT_NAME (msymbol), stream); |
c906108c SS |
298 | fputs_filtered (">", stream); |
299 | } | |
79a45b7d | 300 | if (vt_address && options->vtblprint) |
c5aa993b | 301 | { |
6943961c | 302 | struct value *vt_val; |
c5aa993b JM |
303 | struct symbol *wsym = (struct symbol *) NULL; |
304 | struct type *wtype; | |
c5aa993b | 305 | struct block *block = (struct block *) NULL; |
c906108c SS |
306 | int is_this_fld; |
307 | ||
308 | if (msymbol != NULL) | |
aff410f1 MS |
309 | wsym = lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), |
310 | block, VAR_DOMAIN, | |
311 | &is_this_fld); | |
c5aa993b | 312 | |
c906108c SS |
313 | if (wsym) |
314 | { | |
c5aa993b | 315 | wtype = SYMBOL_TYPE (wsym); |
c906108c SS |
316 | } |
317 | else | |
318 | { | |
6c7a06a3 | 319 | wtype = unresolved_elttype; |
c906108c | 320 | } |
00a4c844 | 321 | vt_val = value_at (wtype, vt_address); |
aff410f1 MS |
322 | common_val_print (vt_val, stream, recurse + 1, |
323 | options, current_language); | |
79a45b7d | 324 | if (options->pretty) |
c906108c SS |
325 | { |
326 | fprintf_filtered (stream, "\n"); | |
327 | print_spaces_filtered (2 + 2 * recurse, stream); | |
328 | } | |
c5aa993b JM |
329 | } |
330 | } | |
c906108c | 331 | |
aff410f1 MS |
332 | /* Return number of characters printed, including the |
333 | terminating '\0' if we reached the end. val_print_string | |
334 | takes care including the terminating '\0' if | |
335 | necessary. */ | |
c906108c SS |
336 | return i; |
337 | } | |
338 | break; | |
339 | ||
c906108c SS |
340 | case TYPE_CODE_REF: |
341 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
79a45b7d | 342 | if (options->addressprint) |
c5aa993b | 343 | { |
4478b372 JB |
344 | CORE_ADDR addr |
345 | = extract_typed_address (valaddr + embedded_offset, type); | |
c5504eaf | 346 | |
c906108c | 347 | fprintf_filtered (stream, "@"); |
5af949e3 | 348 | fputs_filtered (paddress (gdbarch, addr), stream); |
79a45b7d | 349 | if (options->deref_ref) |
c906108c | 350 | fputs_filtered (": ", stream); |
c5aa993b | 351 | } |
c906108c | 352 | /* De-reference the reference. */ |
79a45b7d | 353 | if (options->deref_ref) |
c906108c SS |
354 | { |
355 | if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF) | |
356 | { | |
a471c594 JK |
357 | struct value *deref_val; |
358 | ||
359 | deref_val = coerce_ref_if_computed (original_value); | |
360 | if (deref_val != NULL) | |
361 | { | |
362 | /* More complicated computed references are not supported. */ | |
363 | gdb_assert (embedded_offset == 0); | |
364 | } | |
365 | else | |
366 | deref_val = value_at (TYPE_TARGET_TYPE (type), | |
367 | unpack_pointer (type, | |
368 | (valaddr | |
369 | + embedded_offset))); | |
c5504eaf | 370 | |
79a45b7d TT |
371 | common_val_print (deref_val, stream, recurse, options, |
372 | current_language); | |
c906108c SS |
373 | } |
374 | else | |
375 | fputs_filtered ("???", stream); | |
376 | } | |
377 | break; | |
378 | ||
379 | case TYPE_CODE_UNION: | |
79a45b7d | 380 | if (recurse && !options->unionprint) |
c906108c SS |
381 | { |
382 | fprintf_filtered (stream, "{...}"); | |
383 | break; | |
384 | } | |
385 | /* Fall through. */ | |
386 | case TYPE_CODE_STRUCT: | |
0963b4bd | 387 | /*FIXME: Abstract this away. */ |
79a45b7d | 388 | if (options->vtblprint && cp_is_vtbl_ptr_type (type)) |
c906108c | 389 | { |
c5aa993b | 390 | /* Print the unmangled name if desired. */ |
c906108c | 391 | /* Print vtable entry - we only get here if NOT using |
aff410f1 MS |
392 | -fvtable_thunks. (Otherwise, look under |
393 | TYPE_CODE_PTR.) */ | |
394 | int offset = (embedded_offset | |
395 | + TYPE_FIELD_BITPOS (type, | |
396 | VTBL_FNADDR_OFFSET) / 8); | |
397 | struct type *field_type = TYPE_FIELD_TYPE (type, | |
398 | VTBL_FNADDR_OFFSET); | |
4478b372 JB |
399 | CORE_ADDR addr |
400 | = extract_typed_address (valaddr + offset, field_type); | |
401 | ||
50810684 UW |
402 | print_function_pointer_address (gdbarch, addr, stream, |
403 | options->addressprint); | |
c906108c SS |
404 | } |
405 | else | |
edf3d5f3 | 406 | cp_print_value_fields_rtti (type, valaddr, |
aff410f1 MS |
407 | embedded_offset, address, |
408 | stream, recurse, | |
409 | original_value, options, | |
410 | NULL, 0); | |
c906108c SS |
411 | break; |
412 | ||
413 | case TYPE_CODE_ENUM: | |
79a45b7d | 414 | if (options->format) |
c906108c | 415 | { |
ab2188aa PA |
416 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
417 | original_value, options, 0, stream); | |
c906108c SS |
418 | break; |
419 | } | |
420 | len = TYPE_NFIELDS (type); | |
421 | val = unpack_long (type, valaddr + embedded_offset); | |
422 | for (i = 0; i < len; i++) | |
423 | { | |
424 | QUIT; | |
425 | if (val == TYPE_FIELD_BITPOS (type, i)) | |
426 | { | |
427 | break; | |
428 | } | |
429 | } | |
430 | if (i < len) | |
431 | { | |
432 | fputs_filtered (TYPE_FIELD_NAME (type, i), stream); | |
433 | } | |
cafec441 | 434 | else if (TYPE_FLAG_ENUM (type)) |
c906108c | 435 | { |
cafec441 TT |
436 | int first = 1; |
437 | ||
438 | /* We have a "flag" enum, so we try to decompose it into | |
439 | pieces as appropriate. A flag enum has disjoint | |
440 | constants by definition. */ | |
441 | fputs_filtered ("(", stream); | |
442 | for (i = 0; i < len; ++i) | |
443 | { | |
444 | QUIT; | |
445 | ||
446 | if ((val & TYPE_FIELD_BITPOS (type, i)) != 0) | |
447 | { | |
448 | if (!first) | |
449 | fputs_filtered (" | ", stream); | |
450 | first = 0; | |
451 | ||
452 | val &= ~TYPE_FIELD_BITPOS (type, i); | |
453 | fputs_filtered (TYPE_FIELD_NAME (type, i), stream); | |
454 | } | |
455 | } | |
456 | ||
457 | if (first || val != 0) | |
458 | { | |
459 | if (!first) | |
460 | fputs_filtered (" | ", stream); | |
461 | fputs_filtered ("unknown: ", stream); | |
462 | print_longest (stream, 'd', 0, val); | |
463 | } | |
464 | ||
465 | fputs_filtered (")", stream); | |
c906108c | 466 | } |
cafec441 TT |
467 | else |
468 | print_longest (stream, 'd', 0, val); | |
c906108c SS |
469 | break; |
470 | ||
4f2aea11 | 471 | case TYPE_CODE_FLAGS: |
79a45b7d | 472 | if (options->format) |
ab2188aa PA |
473 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
474 | original_value, options, 0, stream); | |
4f2aea11 | 475 | else |
aff410f1 MS |
476 | val_print_type_code_flags (type, valaddr + embedded_offset, |
477 | stream); | |
4f2aea11 MK |
478 | break; |
479 | ||
c906108c | 480 | case TYPE_CODE_FUNC: |
0d5de010 | 481 | case TYPE_CODE_METHOD: |
79a45b7d | 482 | if (options->format) |
c906108c | 483 | { |
ab2188aa PA |
484 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
485 | original_value, options, 0, stream); | |
c906108c SS |
486 | break; |
487 | } | |
aff410f1 MS |
488 | /* FIXME, we should consider, at least for ANSI C language, |
489 | eliminating the distinction made between FUNCs and POINTERs | |
490 | to FUNCs. */ | |
c906108c SS |
491 | fprintf_filtered (stream, "{"); |
492 | type_print (type, "", stream, -1); | |
493 | fprintf_filtered (stream, "} "); | |
494 | /* Try to print what function it points to, and its address. */ | |
5af949e3 | 495 | print_address_demangle (gdbarch, address, stream, demangle); |
c906108c SS |
496 | break; |
497 | ||
498 | case TYPE_CODE_BOOL: | |
79a45b7d TT |
499 | if (options->format || options->output_format) |
500 | { | |
501 | struct value_print_options opts = *options; | |
502 | opts.format = (options->format ? options->format | |
503 | : options->output_format); | |
ab2188aa PA |
504 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
505 | original_value, &opts, 0, stream); | |
79a45b7d | 506 | } |
c906108c SS |
507 | else |
508 | { | |
509 | val = unpack_long (type, valaddr + embedded_offset); | |
510 | if (val == 0) | |
511 | fputs_filtered ("false", stream); | |
512 | else if (val == 1) | |
513 | fputs_filtered ("true", stream); | |
514 | else | |
515 | print_longest (stream, 'd', 0, val); | |
516 | } | |
517 | break; | |
518 | ||
519 | case TYPE_CODE_RANGE: | |
520 | /* FIXME: create_range_type does not set the unsigned bit in a | |
aff410f1 MS |
521 | range type (I think it probably should copy it from the |
522 | target type), so we won't print values which are too large to | |
c5aa993b | 523 | fit in a signed integer correctly. */ |
c906108c | 524 | /* FIXME: Doesn't handle ranges of enums correctly. (Can't just |
aff410f1 MS |
525 | print with the target type, though, because the size of our |
526 | type and the target type might differ). */ | |
c906108c SS |
527 | /* FALLTHROUGH */ |
528 | ||
529 | case TYPE_CODE_INT: | |
79a45b7d | 530 | if (options->format || options->output_format) |
c906108c | 531 | { |
79a45b7d | 532 | struct value_print_options opts = *options; |
c5504eaf | 533 | |
79a45b7d TT |
534 | opts.format = (options->format ? options->format |
535 | : options->output_format); | |
ab2188aa PA |
536 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
537 | original_value, &opts, 0, stream); | |
c906108c SS |
538 | } |
539 | else | |
540 | { | |
aff410f1 MS |
541 | val_print_type_code_int (type, valaddr + embedded_offset, |
542 | stream); | |
543 | /* C and C++ has no single byte int type, char is used | |
544 | instead. Since we don't know whether the value is really | |
545 | intended to be used as an integer or a character, print | |
546 | the character equivalent as well. */ | |
96c07c5b | 547 | if (c_textual_element_type (unresolved_type, options->format)) |
c906108c SS |
548 | { |
549 | fputs_filtered (" ", stream); | |
447b483c | 550 | LA_PRINT_CHAR (unpack_long (type, valaddr + embedded_offset), |
6c7a06a3 | 551 | unresolved_type, stream); |
c906108c SS |
552 | } |
553 | } | |
554 | break; | |
555 | ||
556 | case TYPE_CODE_CHAR: | |
79a45b7d | 557 | if (options->format || options->output_format) |
c906108c | 558 | { |
79a45b7d TT |
559 | struct value_print_options opts = *options; |
560 | opts.format = (options->format ? options->format | |
561 | : options->output_format); | |
ab2188aa PA |
562 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
563 | original_value, &opts, 0, stream); | |
c906108c SS |
564 | } |
565 | else | |
566 | { | |
96baa820 JM |
567 | val = unpack_long (type, valaddr + embedded_offset); |
568 | if (TYPE_UNSIGNED (type)) | |
569 | fprintf_filtered (stream, "%u", (unsigned int) val); | |
570 | else | |
571 | fprintf_filtered (stream, "%d", (int) val); | |
c906108c | 572 | fputs_filtered (" ", stream); |
447b483c | 573 | LA_PRINT_CHAR (val, unresolved_type, stream); |
c906108c SS |
574 | } |
575 | break; | |
576 | ||
577 | case TYPE_CODE_FLT: | |
79a45b7d | 578 | if (options->format) |
c906108c | 579 | { |
ab2188aa PA |
580 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
581 | original_value, options, 0, stream); | |
c906108c SS |
582 | } |
583 | else | |
584 | { | |
585 | print_floating (valaddr + embedded_offset, type, stream); | |
586 | } | |
587 | break; | |
588 | ||
7678ef8f | 589 | case TYPE_CODE_DECFLOAT: |
79a45b7d | 590 | if (options->format) |
ab2188aa PA |
591 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
592 | original_value, options, 0, stream); | |
7678ef8f | 593 | else |
aff410f1 MS |
594 | print_decimal_floating (valaddr + embedded_offset, |
595 | type, stream); | |
7678ef8f TJB |
596 | break; |
597 | ||
c906108c SS |
598 | case TYPE_CODE_VOID: |
599 | fprintf_filtered (stream, "void"); | |
600 | break; | |
601 | ||
602 | case TYPE_CODE_ERROR: | |
b00fdb78 | 603 | fprintf_filtered (stream, "%s", TYPE_ERROR_NAME (type)); |
c906108c SS |
604 | break; |
605 | ||
606 | case TYPE_CODE_UNDEF: | |
aff410f1 MS |
607 | /* This happens (without TYPE_FLAG_STUB set) on systems which |
608 | don't use dbx xrefs (NO_DBX_XREFS in gcc) if a file has a | |
609 | "struct foo *bar" and no complete type for struct foo in that | |
610 | file. */ | |
3d263c1d | 611 | fprintf_filtered (stream, _("<incomplete type>")); |
c906108c SS |
612 | break; |
613 | ||
fca9e603 | 614 | case TYPE_CODE_COMPLEX: |
79a45b7d | 615 | if (options->format) |
ab2188aa PA |
616 | val_print_scalar_formatted (TYPE_TARGET_TYPE (type), |
617 | valaddr, embedded_offset, | |
618 | original_value, options, 0, stream); | |
fca9e603 | 619 | else |
aff410f1 MS |
620 | print_floating (valaddr + embedded_offset, |
621 | TYPE_TARGET_TYPE (type), | |
fca9e603 DJ |
622 | stream); |
623 | fprintf_filtered (stream, " + "); | |
79a45b7d | 624 | if (options->format) |
ab2188aa PA |
625 | val_print_scalar_formatted (TYPE_TARGET_TYPE (type), |
626 | valaddr, | |
627 | embedded_offset | |
628 | + TYPE_LENGTH (TYPE_TARGET_TYPE (type)), | |
629 | original_value, | |
630 | options, 0, stream); | |
fca9e603 DJ |
631 | else |
632 | print_floating (valaddr + embedded_offset | |
633 | + TYPE_LENGTH (TYPE_TARGET_TYPE (type)), | |
634 | TYPE_TARGET_TYPE (type), | |
635 | stream); | |
636 | fprintf_filtered (stream, " * I"); | |
637 | break; | |
638 | ||
c906108c | 639 | default: |
aff410f1 MS |
640 | error (_("Invalid C/C++ type code %d in symbol table."), |
641 | TYPE_CODE (type)); | |
c906108c SS |
642 | } |
643 | gdb_flush (stream); | |
644 | return (0); | |
645 | } | |
646 | \f | |
647 | int | |
79a45b7d TT |
648 | c_value_print (struct value *val, struct ui_file *stream, |
649 | const struct value_print_options *options) | |
c906108c | 650 | { |
6c7a06a3 | 651 | struct type *type, *real_type, *val_type; |
c906108c | 652 | int full, top, using_enc; |
79a45b7d TT |
653 | struct value_print_options opts = *options; |
654 | ||
655 | opts.deref_ref = 1; | |
c5aa993b | 656 | |
c906108c SS |
657 | /* If it is a pointer, indicate what it points to. |
658 | ||
659 | Print type also if it is a reference. | |
660 | ||
661 | C++: if it is a member pointer, we will take care | |
662 | of that when we print it. */ | |
88750304 | 663 | |
6c7a06a3 TT |
664 | /* Preserve the original type before stripping typedefs. We prefer |
665 | to pass down the original type when possible, but for local | |
666 | checks it is better to look past the typedefs. */ | |
667 | val_type = value_type (val); | |
668 | type = check_typedef (val_type); | |
88750304 DJ |
669 | |
670 | if (TYPE_CODE (type) == TYPE_CODE_PTR | |
671 | || TYPE_CODE (type) == TYPE_CODE_REF) | |
c906108c SS |
672 | { |
673 | /* Hack: remove (char *) for char strings. Their | |
ea37ba09 | 674 | type is indicated by the quoted string anyway. |
96c07c5b | 675 | (Don't use c_textual_element_type here; quoted strings |
6c7a06a3 TT |
676 | are always exactly (char *), (wchar_t *), or the like. */ |
677 | if (TYPE_CODE (val_type) == TYPE_CODE_PTR | |
678 | && TYPE_NAME (val_type) == NULL | |
679 | && TYPE_NAME (TYPE_TARGET_TYPE (val_type)) != NULL | |
aff410f1 MS |
680 | && (strcmp (TYPE_NAME (TYPE_TARGET_TYPE (val_type)), |
681 | "char") == 0 | |
6c7a06a3 | 682 | || textual_name (TYPE_NAME (TYPE_TARGET_TYPE (val_type))))) |
c906108c | 683 | { |
aff410f1 | 684 | /* Print nothing. */ |
c906108c | 685 | } |
79a45b7d TT |
686 | else if (options->objectprint |
687 | && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CLASS)) | |
c5aa993b | 688 | { |
070ad9f0 DB |
689 | |
690 | if (TYPE_CODE(type) == TYPE_CODE_REF) | |
691 | { | |
692 | /* Copy value, change to pointer, so we don't get an | |
aff410f1 MS |
693 | error about a non-pointer type in |
694 | value_rtti_target_type. */ | |
6943961c | 695 | struct value *temparg; |
070ad9f0 | 696 | temparg=value_copy(val); |
aff410f1 MS |
697 | deprecated_set_value_type |
698 | (temparg, lookup_pointer_type (TYPE_TARGET_TYPE (type))); | |
699 | val = temparg; | |
070ad9f0 | 700 | } |
aff410f1 | 701 | /* Pointer to class, check real type of object. */ |
c906108c | 702 | fprintf_filtered (stream, "("); |
ec0a52e1 PA |
703 | |
704 | if (value_entirely_available (val)) | |
705 | { | |
dfcee124 AG |
706 | real_type = value_rtti_indirect_type (val, &full, &top, |
707 | &using_enc); | |
ec0a52e1 PA |
708 | if (real_type) |
709 | { | |
710 | /* RTTI entry found. */ | |
dfcee124 AG |
711 | type = real_type; |
712 | ||
ec0a52e1 PA |
713 | /* Need to adjust pointer value. */ |
714 | val = value_from_pointer (type, value_as_address (val) - top); | |
715 | ||
716 | /* Note: When we look up RTTI entries, we don't get | |
717 | any information on const or volatile | |
718 | attributes. */ | |
719 | } | |
720 | } | |
c4093a6a | 721 | type_print (type, "", stream, -1); |
c906108c | 722 | fprintf_filtered (stream, ") "); |
6c7a06a3 | 723 | val_type = type; |
c5aa993b | 724 | } |
c906108c SS |
725 | else |
726 | { | |
c5aa993b | 727 | /* normal case */ |
c906108c | 728 | fprintf_filtered (stream, "("); |
88750304 | 729 | type_print (value_type (val), "", stream, -1); |
c906108c SS |
730 | fprintf_filtered (stream, ") "); |
731 | } | |
732 | } | |
88750304 | 733 | |
42be36b3 CT |
734 | if (!value_initialized (val)) |
735 | fprintf_filtered (stream, " [uninitialized] "); | |
736 | ||
79a45b7d | 737 | if (options->objectprint && (TYPE_CODE (type) == TYPE_CODE_CLASS)) |
c906108c | 738 | { |
aff410f1 | 739 | /* Attempt to determine real type of object. */ |
c906108c | 740 | real_type = value_rtti_type (val, &full, &top, &using_enc); |
c5aa993b JM |
741 | if (real_type) |
742 | { | |
aff410f1 MS |
743 | /* We have RTTI information, so use it. */ |
744 | val = value_full_object (val, real_type, | |
745 | full, top, using_enc); | |
c5aa993b JM |
746 | fprintf_filtered (stream, "(%s%s) ", |
747 | TYPE_NAME (real_type), | |
3d263c1d | 748 | full ? "" : _(" [incomplete object]")); |
aff410f1 MS |
749 | /* Print out object: enclosing type is same as real_type if |
750 | full. */ | |
46615f07 | 751 | return val_print (value_enclosing_type (val), |
0e03807e | 752 | value_contents_for_printing (val), 0, |
42ae5230 | 753 | value_address (val), stream, 0, |
0e03807e | 754 | val, &opts, current_language); |
aff410f1 MS |
755 | /* Note: When we look up RTTI entries, we don't get any |
756 | information on const or volatile attributes. */ | |
c5aa993b | 757 | } |
88750304 | 758 | else if (type != check_typedef (value_enclosing_type (val))) |
c5aa993b | 759 | { |
aff410f1 | 760 | /* No RTTI information, so let's do our best. */ |
c5aa993b | 761 | fprintf_filtered (stream, "(%s ?) ", |
4754a64e | 762 | TYPE_NAME (value_enclosing_type (val))); |
46615f07 | 763 | return val_print (value_enclosing_type (val), |
0e03807e | 764 | value_contents_for_printing (val), 0, |
42ae5230 | 765 | value_address (val), stream, 0, |
0e03807e | 766 | val, &opts, current_language); |
c5aa993b | 767 | } |
aff410f1 | 768 | /* Otherwise, we end up at the return outside this "if". */ |
c906108c | 769 | } |
c5aa993b | 770 | |
0e03807e | 771 | return val_print (val_type, value_contents_for_printing (val), |
13c3b5f5 | 772 | value_embedded_offset (val), |
42ae5230 | 773 | value_address (val), |
0e03807e TT |
774 | stream, 0, |
775 | val, &opts, current_language); | |
c906108c | 776 | } |