Commit | Line | Data |
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c906108c | 1 | /* C language support routines for GDB, the GNU debugger. |
ce27fb25 | 2 | |
b811d2c2 | 3 | Copyright (C) 1992-2020 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
4de283e4 TT |
21 | #include "symtab.h" |
22 | #include "gdbtypes.h" | |
23 | #include "expression.h" | |
24 | #include "parser-defs.h" | |
25 | #include "language.h" | |
26 | #include "varobj.h" | |
c906108c | 27 | #include "c-lang.h" |
b1b60145 | 28 | #include "c-support.h" |
4de283e4 TT |
29 | #include "valprint.h" |
30 | #include "macroscope.h" | |
234b45d4 | 31 | #include "charset.h" |
4de283e4 | 32 | #include "demangle.h" |
b18be20d | 33 | #include "cp-abi.h" |
1fcb5155 | 34 | #include "cp-support.h" |
6c7a06a3 | 35 | #include "gdb_obstack.h" |
4de283e4 | 36 | #include <ctype.h> |
578d3588 | 37 | #include "gdbcore.h" |
0d12e84c | 38 | #include "gdbarch.h" |
c906108c | 39 | |
8e25bafe AB |
40 | class compile_instance; |
41 | ||
6c7a06a3 TT |
42 | /* Given a C string type, STR_TYPE, return the corresponding target |
43 | character set name. */ | |
44 | ||
45 | static const char * | |
0c801b96 | 46 | charset_for_string_type (c_string_type str_type, struct gdbarch *gdbarch) |
6c7a06a3 TT |
47 | { |
48 | switch (str_type & ~C_CHAR) | |
49 | { | |
50 | case C_STRING: | |
f870a310 | 51 | return target_charset (gdbarch); |
6c7a06a3 | 52 | case C_WIDE_STRING: |
f870a310 | 53 | return target_wide_charset (gdbarch); |
6c7a06a3 | 54 | case C_STRING_16: |
b8899f2b | 55 | /* FIXME: UTF-16 is not always correct. */ |
f870a310 | 56 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
b8899f2b | 57 | return "UTF-16BE"; |
6c7a06a3 | 58 | else |
b8899f2b | 59 | return "UTF-16LE"; |
6c7a06a3 | 60 | case C_STRING_32: |
b8899f2b | 61 | /* FIXME: UTF-32 is not always correct. */ |
f870a310 | 62 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
b8899f2b | 63 | return "UTF-32BE"; |
6c7a06a3 | 64 | else |
b8899f2b | 65 | return "UTF-32LE"; |
6c7a06a3 | 66 | } |
9b20d036 | 67 | internal_error (__FILE__, __LINE__, _("unhandled c_string_type")); |
6c7a06a3 TT |
68 | } |
69 | ||
70 | /* Classify ELTTYPE according to what kind of character it is. Return | |
71 | the enum constant representing the character type. Also set | |
72 | *ENCODING to the name of the character set to use when converting | |
aff410f1 MS |
73 | characters of this type in target BYTE_ORDER to the host character |
74 | set. */ | |
6c7a06a3 | 75 | |
0c801b96 | 76 | static c_string_type |
f870a310 | 77 | classify_type (struct type *elttype, struct gdbarch *gdbarch, |
e17a4113 | 78 | const char **encoding) |
6c7a06a3 | 79 | { |
0c801b96 | 80 | c_string_type result; |
6c7a06a3 | 81 | |
85e306ed TT |
82 | /* We loop because ELTTYPE may be a typedef, and we want to |
83 | successively peel each typedef until we reach a type we | |
84 | understand. We don't use CHECK_TYPEDEF because that will strip | |
85 | all typedefs at once -- but in C, wchar_t is itself a typedef, so | |
86 | that would do the wrong thing. */ | |
87 | while (elttype) | |
6c7a06a3 | 88 | { |
7d93a1e0 | 89 | const char *name = elttype->name (); |
6c7a06a3 | 90 | |
78134374 | 91 | if (elttype->code () == TYPE_CODE_CHAR || !name) |
6c7a06a3 TT |
92 | { |
93 | result = C_CHAR; | |
94 | goto done; | |
95 | } | |
96 | ||
97 | if (!strcmp (name, "wchar_t")) | |
98 | { | |
99 | result = C_WIDE_CHAR; | |
100 | goto done; | |
101 | } | |
102 | ||
103 | if (!strcmp (name, "char16_t")) | |
104 | { | |
105 | result = C_CHAR_16; | |
106 | goto done; | |
107 | } | |
108 | ||
109 | if (!strcmp (name, "char32_t")) | |
110 | { | |
111 | result = C_CHAR_32; | |
112 | goto done; | |
113 | } | |
114 | ||
78134374 | 115 | if (elttype->code () != TYPE_CODE_TYPEDEF) |
85e306ed TT |
116 | break; |
117 | ||
118 | /* Call for side effects. */ | |
119 | check_typedef (elttype); | |
120 | ||
121 | if (TYPE_TARGET_TYPE (elttype)) | |
122 | elttype = TYPE_TARGET_TYPE (elttype); | |
123 | else | |
124 | { | |
125 | /* Perhaps check_typedef did not update the target type. In | |
126 | this case, force the lookup again and hope it works out. | |
127 | It never will for C, but it might for C++. */ | |
f168693b | 128 | elttype = check_typedef (elttype); |
85e306ed | 129 | } |
6c7a06a3 | 130 | } |
6c7a06a3 TT |
131 | |
132 | /* Punt. */ | |
133 | result = C_CHAR; | |
134 | ||
135 | done: | |
e17a4113 | 136 | if (encoding) |
f870a310 | 137 | *encoding = charset_for_string_type (result, gdbarch); |
e17a4113 | 138 | |
6c7a06a3 TT |
139 | return result; |
140 | } | |
141 | ||
aff410f1 MS |
142 | /* Print the character C on STREAM as part of the contents of a |
143 | literal string whose delimiter is QUOTER. Note that that format | |
144 | for printing characters and strings is language specific. */ | |
c906108c | 145 | |
6aecb9c2 JB |
146 | void |
147 | c_emit_char (int c, struct type *type, | |
148 | struct ui_file *stream, int quoter) | |
c906108c | 149 | { |
6c7a06a3 | 150 | const char *encoding; |
234b45d4 | 151 | |
f870a310 | 152 | classify_type (type, get_type_arch (type), &encoding); |
3b2b8fea | 153 | generic_emit_char (c, type, stream, quoter, encoding); |
c906108c SS |
154 | } |
155 | ||
156 | void | |
6c7a06a3 | 157 | c_printchar (int c, struct type *type, struct ui_file *stream) |
c906108c | 158 | { |
0c801b96 | 159 | c_string_type str_type; |
6c7a06a3 | 160 | |
f870a310 | 161 | str_type = classify_type (type, get_type_arch (type), NULL); |
6c7a06a3 TT |
162 | switch (str_type) |
163 | { | |
164 | case C_CHAR: | |
165 | break; | |
166 | case C_WIDE_CHAR: | |
167 | fputc_filtered ('L', stream); | |
168 | break; | |
169 | case C_CHAR_16: | |
170 | fputc_filtered ('u', stream); | |
171 | break; | |
172 | case C_CHAR_32: | |
173 | fputc_filtered ('U', stream); | |
174 | break; | |
175 | } | |
176 | ||
c906108c | 177 | fputc_filtered ('\'', stream); |
6c7a06a3 | 178 | LA_EMIT_CHAR (c, type, stream, '\''); |
c906108c SS |
179 | fputc_filtered ('\'', stream); |
180 | } | |
181 | ||
aff410f1 MS |
182 | /* Print the character string STRING, printing at most LENGTH |
183 | characters. LENGTH is -1 if the string is nul terminated. Each | |
184 | character is WIDTH bytes long. Printing stops early if the number | |
185 | hits print_max; repeat counts are printed as appropriate. Print | |
186 | ellipses at the end if we had to stop before printing LENGTH | |
187 | characters, or if FORCE_ELLIPSES. */ | |
c906108c SS |
188 | |
189 | void | |
aff410f1 MS |
190 | c_printstr (struct ui_file *stream, struct type *type, |
191 | const gdb_byte *string, unsigned int length, | |
192 | const char *user_encoding, int force_ellipses, | |
79a45b7d | 193 | const struct value_print_options *options) |
c906108c | 194 | { |
0c801b96 | 195 | c_string_type str_type; |
3b2b8fea TT |
196 | const char *type_encoding; |
197 | const char *encoding; | |
198 | ||
f870a310 TT |
199 | str_type = (classify_type (type, get_type_arch (type), &type_encoding) |
200 | & ~C_CHAR); | |
6c7a06a3 TT |
201 | switch (str_type) |
202 | { | |
203 | case C_STRING: | |
204 | break; | |
205 | case C_WIDE_STRING: | |
206 | fputs_filtered ("L", stream); | |
207 | break; | |
208 | case C_STRING_16: | |
209 | fputs_filtered ("u", stream); | |
210 | break; | |
211 | case C_STRING_32: | |
212 | fputs_filtered ("U", stream); | |
213 | break; | |
214 | } | |
215 | ||
3b2b8fea | 216 | encoding = (user_encoding && *user_encoding) ? user_encoding : type_encoding; |
6c7a06a3 | 217 | |
3b2b8fea TT |
218 | generic_printstr (stream, type, string, length, encoding, force_ellipses, |
219 | '"', 1, options); | |
c906108c | 220 | } |
ae6a3a4c TJB |
221 | |
222 | /* Obtain a C string from the inferior storing it in a newly allocated | |
aff410f1 MS |
223 | buffer in BUFFER, which should be freed by the caller. If the in- |
224 | and out-parameter *LENGTH is specified at -1, the string is read | |
fbb8f299 | 225 | until a null character of the appropriate width is found, otherwise |
aff410f1 MS |
226 | the string is read to the length of characters specified. The size |
227 | of a character is determined by the length of the target type of | |
0987cf35 DE |
228 | the pointer or array. |
229 | ||
230 | If VALUE is an array with a known length, and *LENGTH is -1, | |
231 | the function will not read past the end of the array. However, any | |
232 | declared size of the array is ignored if *LENGTH > 0. | |
233 | ||
234 | On completion, *LENGTH will be set to the size of the string read in | |
fbb8f299 PM |
235 | characters. (If a length of -1 is specified, the length returned |
236 | will not include the null character). CHARSET is always set to the | |
237 | target charset. */ | |
ae6a3a4c TJB |
238 | |
239 | void | |
b4be9fad | 240 | c_get_string (struct value *value, gdb::unique_xmalloc_ptr<gdb_byte> *buffer, |
aff410f1 MS |
241 | int *length, struct type **char_type, |
242 | const char **charset) | |
ae6a3a4c TJB |
243 | { |
244 | int err, width; | |
245 | unsigned int fetchlimit; | |
246 | struct type *type = check_typedef (value_type (value)); | |
247 | struct type *element_type = TYPE_TARGET_TYPE (type); | |
fbb8f299 | 248 | int req_length = *length; |
aff410f1 | 249 | enum bfd_endian byte_order |
34877895 | 250 | = type_byte_order (type); |
ae6a3a4c TJB |
251 | |
252 | if (element_type == NULL) | |
253 | goto error; | |
254 | ||
78134374 | 255 | if (type->code () == TYPE_CODE_ARRAY) |
ae6a3a4c | 256 | { |
aff410f1 MS |
257 | /* If we know the size of the array, we can use it as a limit on |
258 | the number of characters to be fetched. */ | |
1f704f76 | 259 | if (type->num_fields () == 1 |
78134374 | 260 | && TYPE_FIELD_TYPE (type, 0)->code () == TYPE_CODE_RANGE) |
ae6a3a4c TJB |
261 | { |
262 | LONGEST low_bound, high_bound; | |
263 | ||
264 | get_discrete_bounds (TYPE_FIELD_TYPE (type, 0), | |
265 | &low_bound, &high_bound); | |
266 | fetchlimit = high_bound - low_bound + 1; | |
267 | } | |
268 | else | |
269 | fetchlimit = UINT_MAX; | |
270 | } | |
78134374 | 271 | else if (type->code () == TYPE_CODE_PTR) |
ae6a3a4c TJB |
272 | fetchlimit = UINT_MAX; |
273 | else | |
274 | /* We work only with arrays and pointers. */ | |
275 | goto error; | |
276 | ||
96c07c5b | 277 | if (! c_textual_element_type (element_type, 0)) |
ae6a3a4c | 278 | goto error; |
df54f8eb | 279 | classify_type (element_type, get_type_arch (element_type), charset); |
ae6a3a4c TJB |
280 | width = TYPE_LENGTH (element_type); |
281 | ||
aff410f1 MS |
282 | /* If the string lives in GDB's memory instead of the inferior's, |
283 | then we just need to copy it to BUFFER. Also, since such strings | |
284 | are arrays with known size, FETCHLIMIT will hold the size of the | |
80e55b13 TT |
285 | array. |
286 | ||
287 | An array is assumed to live in GDB's memory, so we take this path | |
288 | here. | |
289 | ||
290 | However, it's possible for the caller to request more array | |
291 | elements than apparently exist -- this can happen when using the | |
292 | C struct hack. So, only do this if either no length was | |
293 | specified, or the length is within the existing bounds. This | |
294 | avoids running off the end of the value's contents. */ | |
ae6a3a4c | 295 | if ((VALUE_LVAL (value) == not_lval |
80e55b13 | 296 | || VALUE_LVAL (value) == lval_internalvar |
78134374 | 297 | || type->code () == TYPE_CODE_ARRAY) |
80e55b13 TT |
298 | && fetchlimit != UINT_MAX |
299 | && (*length < 0 || *length <= fetchlimit)) | |
ae6a3a4c TJB |
300 | { |
301 | int i; | |
302 | const gdb_byte *contents = value_contents (value); | |
303 | ||
fbb8f299 PM |
304 | /* If a length is specified, use that. */ |
305 | if (*length >= 0) | |
306 | i = *length; | |
307 | else | |
e623f035 SM |
308 | /* Otherwise, look for a null character. */ |
309 | for (i = 0; i < fetchlimit; i++) | |
aff410f1 MS |
310 | if (extract_unsigned_integer (contents + i * width, |
311 | width, byte_order) == 0) | |
e623f035 | 312 | break; |
fbb8f299 PM |
313 | |
314 | /* I is now either a user-defined length, the number of non-null | |
e623f035 | 315 | characters, or FETCHLIMIT. */ |
ae6a3a4c | 316 | *length = i * width; |
b4be9fad TT |
317 | buffer->reset ((gdb_byte *) xmalloc (*length)); |
318 | memcpy (buffer->get (), contents, *length); | |
ae6a3a4c TJB |
319 | err = 0; |
320 | } | |
321 | else | |
322 | { | |
80e55b13 TT |
323 | /* value_as_address does not return an address for an array when |
324 | c_style_arrays is false, so we handle that specially | |
325 | here. */ | |
326 | CORE_ADDR addr; | |
78134374 | 327 | if (type->code () == TYPE_CODE_ARRAY) |
80e55b13 TT |
328 | { |
329 | if (VALUE_LVAL (value) != lval_memory) | |
330 | error (_("Attempt to take address of value " | |
331 | "not located in memory.")); | |
332 | addr = value_address (value); | |
333 | } | |
334 | else | |
335 | addr = value_as_address (value); | |
621c8364 | 336 | |
0987cf35 DE |
337 | /* Prior to the fix for PR 16196 read_string would ignore fetchlimit |
338 | if length > 0. The old "broken" behaviour is the behaviour we want: | |
339 | The caller may want to fetch 100 bytes from a variable length array | |
340 | implemented using the common idiom of having an array of length 1 at | |
341 | the end of a struct. In this case we want to ignore the declared | |
342 | size of the array. However, it's counterintuitive to implement that | |
343 | behaviour in read_string: what does fetchlimit otherwise mean if | |
344 | length > 0. Therefore we implement the behaviour we want here: | |
345 | If *length > 0, don't specify a fetchlimit. This preserves the | |
346 | previous behaviour. We could move this check above where we know | |
347 | whether the array is declared with a fixed size, but we only want | |
348 | to apply this behaviour when calling read_string. PR 16286. */ | |
349 | if (*length > 0) | |
350 | fetchlimit = UINT_MAX; | |
351 | ||
621c8364 TT |
352 | err = read_string (addr, *length, width, fetchlimit, |
353 | byte_order, buffer, length); | |
d09f2c3f | 354 | if (err != 0) |
b4be9fad | 355 | memory_error (TARGET_XFER_E_IO, addr); |
ae6a3a4c TJB |
356 | } |
357 | ||
fbb8f299 PM |
358 | /* If the LENGTH is specified at -1, we want to return the string |
359 | length up to the terminating null character. If an actual length | |
360 | was specified, we want to return the length of exactly what was | |
361 | read. */ | |
362 | if (req_length == -1) | |
363 | /* If the last character is null, subtract it from LENGTH. */ | |
364 | if (*length > 0 | |
b4be9fad | 365 | && extract_unsigned_integer (buffer->get () + *length - width, |
aff410f1 | 366 | width, byte_order) == 0) |
fbb8f299 PM |
367 | *length -= width; |
368 | ||
369 | /* The read_string function will return the number of bytes read. | |
370 | If length returned from read_string was > 0, return the number of | |
371 | characters read by dividing the number of bytes by width. */ | |
372 | if (*length != 0) | |
373 | *length = *length / width; | |
ae6a3a4c | 374 | |
96c07c5b | 375 | *char_type = element_type; |
ae6a3a4c TJB |
376 | |
377 | return; | |
378 | ||
379 | error: | |
380 | { | |
2f408ecb PA |
381 | std::string type_str = type_to_string (type); |
382 | if (!type_str.empty ()) | |
ae6a3a4c | 383 | { |
ae6a3a4c | 384 | error (_("Trying to read string with inappropriate type `%s'."), |
2f408ecb | 385 | type_str.c_str ()); |
ae6a3a4c TJB |
386 | } |
387 | else | |
388 | error (_("Trying to read string with inappropriate type.")); | |
389 | } | |
390 | } | |
391 | ||
c906108c | 392 | \f |
6c7a06a3 TT |
393 | /* Evaluating C and C++ expressions. */ |
394 | ||
395 | /* Convert a UCN. The digits of the UCN start at P and extend no | |
396 | farther than LIMIT. DEST_CHARSET is the name of the character set | |
397 | into which the UCN should be converted. The results are written to | |
398 | OUTPUT. LENGTH is the maximum length of the UCN, either 4 or 8. | |
399 | Returns a pointer to just after the final digit of the UCN. */ | |
400 | ||
401 | static char * | |
402 | convert_ucn (char *p, char *limit, const char *dest_charset, | |
403 | struct obstack *output, int length) | |
404 | { | |
405 | unsigned long result = 0; | |
406 | gdb_byte data[4]; | |
407 | int i; | |
408 | ||
b1b60145 | 409 | for (i = 0; i < length && p < limit && ISXDIGIT (*p); ++i, ++p) |
6c7a06a3 TT |
410 | result = (result << 4) + host_hex_value (*p); |
411 | ||
412 | for (i = 3; i >= 0; --i) | |
413 | { | |
414 | data[i] = result & 0xff; | |
415 | result >>= 8; | |
416 | } | |
417 | ||
aff410f1 MS |
418 | convert_between_encodings ("UTF-32BE", dest_charset, data, |
419 | 4, 4, output, translit_none); | |
6c7a06a3 TT |
420 | |
421 | return p; | |
422 | } | |
423 | ||
424 | /* Emit a character, VALUE, which was specified numerically, to | |
425 | OUTPUT. TYPE is the target character type. */ | |
426 | ||
427 | static void | |
428 | emit_numeric_character (struct type *type, unsigned long value, | |
429 | struct obstack *output) | |
430 | { | |
431 | gdb_byte *buffer; | |
432 | ||
224c3ddb | 433 | buffer = (gdb_byte *) alloca (TYPE_LENGTH (type)); |
6c7a06a3 TT |
434 | pack_long (buffer, type, value); |
435 | obstack_grow (output, buffer, TYPE_LENGTH (type)); | |
436 | } | |
437 | ||
438 | /* Convert an octal escape sequence. TYPE is the target character | |
439 | type. The digits of the escape sequence begin at P and extend no | |
440 | farther than LIMIT. The result is written to OUTPUT. Returns a | |
441 | pointer to just after the final digit of the escape sequence. */ | |
442 | ||
443 | static char * | |
aff410f1 MS |
444 | convert_octal (struct type *type, char *p, |
445 | char *limit, struct obstack *output) | |
6c7a06a3 | 446 | { |
30b66ecc | 447 | int i; |
6c7a06a3 TT |
448 | unsigned long value = 0; |
449 | ||
30b66ecc | 450 | for (i = 0; |
b1b60145 | 451 | i < 3 && p < limit && ISDIGIT (*p) && *p != '8' && *p != '9'; |
30b66ecc | 452 | ++i) |
6c7a06a3 TT |
453 | { |
454 | value = 8 * value + host_hex_value (*p); | |
455 | ++p; | |
456 | } | |
457 | ||
458 | emit_numeric_character (type, value, output); | |
459 | ||
460 | return p; | |
461 | } | |
462 | ||
463 | /* Convert a hex escape sequence. TYPE is the target character type. | |
464 | The digits of the escape sequence begin at P and extend no farther | |
465 | than LIMIT. The result is written to OUTPUT. Returns a pointer to | |
466 | just after the final digit of the escape sequence. */ | |
467 | ||
468 | static char * | |
aff410f1 MS |
469 | convert_hex (struct type *type, char *p, |
470 | char *limit, struct obstack *output) | |
6c7a06a3 TT |
471 | { |
472 | unsigned long value = 0; | |
473 | ||
b1b60145 | 474 | while (p < limit && ISXDIGIT (*p)) |
6c7a06a3 TT |
475 | { |
476 | value = 16 * value + host_hex_value (*p); | |
477 | ++p; | |
478 | } | |
479 | ||
480 | emit_numeric_character (type, value, output); | |
481 | ||
482 | return p; | |
483 | } | |
484 | ||
485 | #define ADVANCE \ | |
486 | do { \ | |
487 | ++p; \ | |
488 | if (p == limit) \ | |
489 | error (_("Malformed escape sequence")); \ | |
490 | } while (0) | |
491 | ||
492 | /* Convert an escape sequence to a target format. TYPE is the target | |
493 | character type to use, and DEST_CHARSET is the name of the target | |
494 | character set. The backslash of the escape sequence is at *P, and | |
495 | the escape sequence will not extend past LIMIT. The results are | |
496 | written to OUTPUT. Returns a pointer to just past the final | |
497 | character of the escape sequence. */ | |
498 | ||
499 | static char * | |
500 | convert_escape (struct type *type, const char *dest_charset, | |
501 | char *p, char *limit, struct obstack *output) | |
502 | { | |
503 | /* Skip the backslash. */ | |
504 | ADVANCE; | |
505 | ||
506 | switch (*p) | |
507 | { | |
508 | case '\\': | |
509 | obstack_1grow (output, '\\'); | |
510 | ++p; | |
511 | break; | |
512 | ||
513 | case 'x': | |
514 | ADVANCE; | |
b1b60145 | 515 | if (!ISXDIGIT (*p)) |
6c7a06a3 TT |
516 | error (_("\\x used with no following hex digits.")); |
517 | p = convert_hex (type, p, limit, output); | |
518 | break; | |
519 | ||
520 | case '0': | |
521 | case '1': | |
522 | case '2': | |
523 | case '3': | |
524 | case '4': | |
525 | case '5': | |
526 | case '6': | |
527 | case '7': | |
528 | p = convert_octal (type, p, limit, output); | |
529 | break; | |
530 | ||
531 | case 'u': | |
532 | case 'U': | |
533 | { | |
534 | int length = *p == 'u' ? 4 : 8; | |
c5504eaf | 535 | |
6c7a06a3 | 536 | ADVANCE; |
b1b60145 | 537 | if (!ISXDIGIT (*p)) |
6c7a06a3 TT |
538 | error (_("\\u used with no following hex digits")); |
539 | p = convert_ucn (p, limit, dest_charset, output, length); | |
540 | } | |
541 | } | |
542 | ||
543 | return p; | |
544 | } | |
545 | ||
546 | /* Given a single string from a (C-specific) OP_STRING list, convert | |
547 | it to a target string, handling escape sequences specially. The | |
548 | output is written to OUTPUT. DATA is the input string, which has | |
549 | length LEN. DEST_CHARSET is the name of the target character set, | |
550 | and TYPE is the type of target character to use. */ | |
551 | ||
552 | static void | |
553 | parse_one_string (struct obstack *output, char *data, int len, | |
554 | const char *dest_charset, struct type *type) | |
555 | { | |
556 | char *limit; | |
557 | ||
558 | limit = data + len; | |
559 | ||
560 | while (data < limit) | |
561 | { | |
562 | char *p = data; | |
c5504eaf | 563 | |
6c7a06a3 TT |
564 | /* Look for next escape, or the end of the input. */ |
565 | while (p < limit && *p != '\\') | |
566 | ++p; | |
567 | /* If we saw a run of characters, convert them all. */ | |
568 | if (p > data) | |
569 | convert_between_encodings (host_charset (), dest_charset, | |
ac91cd70 | 570 | (gdb_byte *) data, p - data, 1, |
aff410f1 | 571 | output, translit_none); |
6c7a06a3 TT |
572 | /* If we saw an escape, convert it. */ |
573 | if (p < limit) | |
574 | p = convert_escape (type, dest_charset, p, limit, output); | |
575 | data = p; | |
576 | } | |
577 | } | |
578 | ||
579 | /* Expression evaluator for the C language family. Most operations | |
580 | are delegated to evaluate_subexp_standard; see that function for a | |
581 | description of the arguments. */ | |
582 | ||
f4b8a18d | 583 | struct value * |
6c7a06a3 TT |
584 | evaluate_subexp_c (struct type *expect_type, struct expression *exp, |
585 | int *pos, enum noside noside) | |
586 | { | |
587 | enum exp_opcode op = exp->elts[*pos].opcode; | |
588 | ||
589 | switch (op) | |
590 | { | |
591 | case OP_STRING: | |
592 | { | |
593 | int oplen, limit; | |
594 | struct type *type; | |
6c7a06a3 | 595 | struct value *result; |
0c801b96 | 596 | c_string_type dest_type; |
6c7a06a3 | 597 | const char *dest_charset; |
c50491a7 | 598 | int satisfy_expected = 0; |
6c7a06a3 | 599 | |
8268c778 | 600 | auto_obstack output; |
6c7a06a3 TT |
601 | |
602 | ++*pos; | |
603 | oplen = longest_to_int (exp->elts[*pos].longconst); | |
604 | ||
605 | ++*pos; | |
606 | limit = *pos + BYTES_TO_EXP_ELEM (oplen + 1); | |
0c801b96 SM |
607 | dest_type = ((enum c_string_type_values) |
608 | longest_to_int (exp->elts[*pos].longconst)); | |
6c7a06a3 TT |
609 | switch (dest_type & ~C_CHAR) |
610 | { | |
611 | case C_STRING: | |
d80b854b UW |
612 | type = language_string_char_type (exp->language_defn, |
613 | exp->gdbarch); | |
6c7a06a3 TT |
614 | break; |
615 | case C_WIDE_STRING: | |
b858499d | 616 | type = lookup_typename (exp->language_defn, "wchar_t", NULL, 0); |
6c7a06a3 TT |
617 | break; |
618 | case C_STRING_16: | |
b858499d | 619 | type = lookup_typename (exp->language_defn, "char16_t", NULL, 0); |
6c7a06a3 TT |
620 | break; |
621 | case C_STRING_32: | |
b858499d | 622 | type = lookup_typename (exp->language_defn, "char32_t", NULL, 0); |
6c7a06a3 TT |
623 | break; |
624 | default: | |
9b20d036 | 625 | internal_error (__FILE__, __LINE__, _("unhandled c_string_type")); |
6c7a06a3 | 626 | } |
546e879e TT |
627 | |
628 | /* Ensure TYPE_LENGTH is valid for TYPE. */ | |
629 | check_typedef (type); | |
630 | ||
c50491a7 TT |
631 | /* If the caller expects an array of some integral type, |
632 | satisfy them. If something odder is expected, rely on the | |
633 | caller to cast. */ | |
78134374 | 634 | if (expect_type && expect_type->code () == TYPE_CODE_ARRAY) |
c50491a7 TT |
635 | { |
636 | struct type *element_type | |
637 | = check_typedef (TYPE_TARGET_TYPE (expect_type)); | |
638 | ||
78134374 SM |
639 | if (element_type->code () == TYPE_CODE_INT |
640 | || element_type->code () == TYPE_CODE_CHAR) | |
c50491a7 TT |
641 | { |
642 | type = element_type; | |
643 | satisfy_expected = 1; | |
644 | } | |
645 | } | |
646 | ||
f870a310 | 647 | dest_charset = charset_for_string_type (dest_type, exp->gdbarch); |
6c7a06a3 TT |
648 | |
649 | ++*pos; | |
650 | while (*pos < limit) | |
651 | { | |
652 | int len; | |
653 | ||
654 | len = longest_to_int (exp->elts[*pos].longconst); | |
655 | ||
656 | ++*pos; | |
657 | if (noside != EVAL_SKIP) | |
658 | parse_one_string (&output, &exp->elts[*pos].string, len, | |
659 | dest_charset, type); | |
660 | *pos += BYTES_TO_EXP_ELEM (len); | |
661 | } | |
662 | ||
663 | /* Skip the trailing length and opcode. */ | |
664 | *pos += 2; | |
665 | ||
666 | if (noside == EVAL_SKIP) | |
334cc82d TT |
667 | { |
668 | /* Return a dummy value of the appropriate type. */ | |
c50491a7 TT |
669 | if (expect_type != NULL) |
670 | result = allocate_value (expect_type); | |
671 | else if ((dest_type & C_CHAR) != 0) | |
334cc82d TT |
672 | result = allocate_value (type); |
673 | else | |
3b7538c0 | 674 | result = value_cstring ("", 0, type); |
334cc82d TT |
675 | return result; |
676 | } | |
6c7a06a3 TT |
677 | |
678 | if ((dest_type & C_CHAR) != 0) | |
679 | { | |
680 | LONGEST value; | |
681 | ||
682 | if (obstack_object_size (&output) != TYPE_LENGTH (type)) | |
3e43a32a MS |
683 | error (_("Could not convert character " |
684 | "constant to target character set")); | |
51a5cd90 | 685 | value = unpack_long (type, (gdb_byte *) obstack_base (&output)); |
6c7a06a3 TT |
686 | result = value_from_longest (type, value); |
687 | } | |
688 | else | |
689 | { | |
690 | int i; | |
c5504eaf | 691 | |
6c7a06a3 TT |
692 | /* Write the terminating character. */ |
693 | for (i = 0; i < TYPE_LENGTH (type); ++i) | |
694 | obstack_1grow (&output, 0); | |
c50491a7 TT |
695 | |
696 | if (satisfy_expected) | |
697 | { | |
698 | LONGEST low_bound, high_bound; | |
699 | int element_size = TYPE_LENGTH (type); | |
700 | ||
3d967001 | 701 | if (get_discrete_bounds (expect_type->index_type (), |
c50491a7 TT |
702 | &low_bound, &high_bound) < 0) |
703 | { | |
704 | low_bound = 0; | |
705 | high_bound = (TYPE_LENGTH (expect_type) / element_size) - 1; | |
706 | } | |
707 | if (obstack_object_size (&output) / element_size | |
708 | > (high_bound - low_bound + 1)) | |
709 | error (_("Too many array elements")); | |
710 | ||
711 | result = allocate_value (expect_type); | |
712 | memcpy (value_contents_raw (result), obstack_base (&output), | |
713 | obstack_object_size (&output)); | |
714 | } | |
715 | else | |
79f33898 | 716 | result = value_cstring ((const char *) obstack_base (&output), |
c50491a7 TT |
717 | obstack_object_size (&output), |
718 | type); | |
6c7a06a3 | 719 | } |
6c7a06a3 TT |
720 | return result; |
721 | } | |
722 | break; | |
723 | ||
724 | default: | |
725 | break; | |
726 | } | |
727 | return evaluate_subexp_standard (expect_type, exp, pos, noside); | |
728 | } | |
43cc5389 TT |
729 | \f |
730 | /* la_watch_location_expression for C. */ | |
c5aa993b | 731 | |
43cc5389 TT |
732 | gdb::unique_xmalloc_ptr<char> |
733 | c_watch_location_expression (struct type *type, CORE_ADDR addr) | |
734 | { | |
735 | type = check_typedef (TYPE_TARGET_TYPE (check_typedef (type))); | |
736 | std::string name = type_to_string (type); | |
737 | return gdb::unique_xmalloc_ptr<char> | |
738 | (xstrprintf ("* (%s *) %s", name.c_str (), core_addr_to_string (addr))); | |
739 | } | |
84f0252a | 740 | |
4be290b2 AB |
741 | /* See c-lang.h. */ |
742 | ||
743 | bool | |
744 | c_is_string_type_p (struct type *type) | |
745 | { | |
746 | type = check_typedef (type); | |
78134374 | 747 | while (type->code () == TYPE_CODE_REF) |
4be290b2 AB |
748 | { |
749 | type = TYPE_TARGET_TYPE (type); | |
750 | type = check_typedef (type); | |
751 | } | |
752 | ||
78134374 | 753 | switch (type->code ()) |
4be290b2 AB |
754 | { |
755 | case TYPE_CODE_ARRAY: | |
756 | { | |
757 | /* See if target type looks like a string. */ | |
758 | struct type *array_target_type = TYPE_TARGET_TYPE (type); | |
759 | return (TYPE_LENGTH (type) > 0 | |
760 | && TYPE_LENGTH (array_target_type) > 0 | |
761 | && c_textual_element_type (array_target_type, 0)); | |
762 | } | |
763 | case TYPE_CODE_STRING: | |
764 | return true; | |
765 | case TYPE_CODE_PTR: | |
766 | { | |
767 | struct type *element_type = TYPE_TARGET_TYPE (type); | |
768 | return c_textual_element_type (element_type, 0); | |
769 | } | |
770 | default: | |
771 | break; | |
772 | } | |
773 | ||
774 | return false; | |
775 | } | |
776 | ||
84f0252a | 777 | \f |
c906108c SS |
778 | /* Table mapping opcodes into strings for printing operators |
779 | and precedences of the operators. */ | |
780 | ||
781 | const struct op_print c_op_print_tab[] = | |
c5aa993b JM |
782 | { |
783 | {",", BINOP_COMMA, PREC_COMMA, 0}, | |
784 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
785 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
786 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
787 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
788 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
789 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
790 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, | |
791 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
792 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
793 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
794 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
795 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
796 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
797 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
798 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
799 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
800 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
801 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
802 | {"%", BINOP_REM, PREC_MUL, 0}, | |
803 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
a016fc87 | 804 | {"+", UNOP_PLUS, PREC_PREFIX, 0}, |
c5aa993b JM |
805 | {"-", UNOP_NEG, PREC_PREFIX, 0}, |
806 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
807 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
808 | {"*", UNOP_IND, PREC_PREFIX, 0}, | |
809 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, | |
810 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, | |
007e1530 | 811 | {"alignof ", UNOP_ALIGNOF, PREC_PREFIX, 0}, |
c5aa993b JM |
812 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, |
813 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, | |
f486487f | 814 | {NULL, OP_NULL, PREC_PREFIX, 0} |
c906108c SS |
815 | }; |
816 | \f | |
685419e2 AC |
817 | enum c_primitive_types { |
818 | c_primitive_type_int, | |
819 | c_primitive_type_long, | |
820 | c_primitive_type_short, | |
821 | c_primitive_type_char, | |
822 | c_primitive_type_float, | |
823 | c_primitive_type_double, | |
824 | c_primitive_type_void, | |
825 | c_primitive_type_long_long, | |
826 | c_primitive_type_signed_char, | |
827 | c_primitive_type_unsigned_char, | |
828 | c_primitive_type_unsigned_short, | |
829 | c_primitive_type_unsigned_int, | |
830 | c_primitive_type_unsigned_long, | |
831 | c_primitive_type_unsigned_long_long, | |
832 | c_primitive_type_long_double, | |
833 | c_primitive_type_complex, | |
834 | c_primitive_type_double_complex, | |
213e4dc2 TJB |
835 | c_primitive_type_decfloat, |
836 | c_primitive_type_decdouble, | |
837 | c_primitive_type_declong, | |
685419e2 AC |
838 | nr_c_primitive_types |
839 | }; | |
840 | ||
e9667a65 | 841 | void |
685419e2 AC |
842 | c_language_arch_info (struct gdbarch *gdbarch, |
843 | struct language_arch_info *lai) | |
844 | { | |
845 | const struct builtin_type *builtin = builtin_type (gdbarch); | |
c5504eaf | 846 | |
e9667a65 | 847 | lai->string_char_type = builtin->builtin_char; |
685419e2 AC |
848 | lai->primitive_type_vector |
849 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_c_primitive_types + 1, | |
850 | struct type *); | |
851 | lai->primitive_type_vector [c_primitive_type_int] = builtin->builtin_int; | |
852 | lai->primitive_type_vector [c_primitive_type_long] = builtin->builtin_long; | |
853 | lai->primitive_type_vector [c_primitive_type_short] = builtin->builtin_short; | |
854 | lai->primitive_type_vector [c_primitive_type_char] = builtin->builtin_char; | |
855 | lai->primitive_type_vector [c_primitive_type_float] = builtin->builtin_float; | |
856 | lai->primitive_type_vector [c_primitive_type_double] = builtin->builtin_double; | |
857 | lai->primitive_type_vector [c_primitive_type_void] = builtin->builtin_void; | |
858 | lai->primitive_type_vector [c_primitive_type_long_long] = builtin->builtin_long_long; | |
859 | lai->primitive_type_vector [c_primitive_type_signed_char] = builtin->builtin_signed_char; | |
860 | lai->primitive_type_vector [c_primitive_type_unsigned_char] = builtin->builtin_unsigned_char; | |
861 | lai->primitive_type_vector [c_primitive_type_unsigned_short] = builtin->builtin_unsigned_short; | |
862 | lai->primitive_type_vector [c_primitive_type_unsigned_int] = builtin->builtin_unsigned_int; | |
863 | lai->primitive_type_vector [c_primitive_type_unsigned_long] = builtin->builtin_unsigned_long; | |
864 | lai->primitive_type_vector [c_primitive_type_unsigned_long_long] = builtin->builtin_unsigned_long_long; | |
865 | lai->primitive_type_vector [c_primitive_type_long_double] = builtin->builtin_long_double; | |
866 | lai->primitive_type_vector [c_primitive_type_complex] = builtin->builtin_complex; | |
867 | lai->primitive_type_vector [c_primitive_type_double_complex] = builtin->builtin_double_complex; | |
213e4dc2 TJB |
868 | lai->primitive_type_vector [c_primitive_type_decfloat] = builtin->builtin_decfloat; |
869 | lai->primitive_type_vector [c_primitive_type_decdouble] = builtin->builtin_decdouble; | |
870 | lai->primitive_type_vector [c_primitive_type_declong] = builtin->builtin_declong; | |
fbb06eb1 UW |
871 | |
872 | lai->bool_type_default = builtin->builtin_int; | |
cad351d1 | 873 | } |
685419e2 | 874 | |
6aecb9c2 | 875 | const struct exp_descriptor exp_descriptor_c = |
6c7a06a3 TT |
876 | { |
877 | print_subexp_standard, | |
878 | operator_length_standard, | |
c0201579 | 879 | operator_check_standard, |
6c7a06a3 TT |
880 | op_name_standard, |
881 | dump_subexp_body_standard, | |
882 | evaluate_subexp_c | |
883 | }; | |
884 | ||
56618e20 TT |
885 | static const char *c_extensions[] = |
886 | { | |
887 | ".c", NULL | |
888 | }; | |
889 | ||
0874fd07 AB |
890 | /* Constant data that describes the C language. */ |
891 | ||
892 | extern const struct language_data c_language_data = | |
c5aa993b | 893 | { |
c906108c | 894 | "c", /* Language name */ |
6abde28f | 895 | "C", |
c906108c | 896 | language_c, |
c906108c | 897 | range_check_off, |
63872f9d | 898 | case_sensitive_on, |
7ca2d3a3 | 899 | array_row_major, |
9a044a89 | 900 | macro_expansion_c, |
56618e20 | 901 | c_extensions, |
6c7a06a3 | 902 | &exp_descriptor_c, |
7c8adf68 | 903 | c_parse, |
e85c3284 | 904 | null_post_parser, |
c906108c SS |
905 | c_printchar, /* Print a character constant */ |
906 | c_printstr, /* Function to print string constant */ | |
907 | c_emit_char, /* Print a single char */ | |
5c6ce71d | 908 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
62182190 | 909 | c_value_print_inner, /* la_value_print_inner */ |
c906108c | 910 | c_value_print, /* Print a top-level value */ |
2b2d9e11 | 911 | NULL, /* name_of_this */ |
59cc4834 | 912 | true, /* la_store_sym_names_in_linkage_form_p */ |
5f9a71c3 | 913 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
aff410f1 MS |
914 | NULL, /* Language specific |
915 | class_name_from_physname */ | |
c906108c SS |
916 | c_op_print_tab, /* expression operators for printing */ |
917 | 1, /* c-style arrays */ | |
918 | 0, /* String lower bound */ | |
6084f43a | 919 | default_word_break_characters, |
eb3ff9a5 | 920 | default_collect_symbol_completion_matches, |
43cc5389 | 921 | c_watch_location_expression, |
b5ec771e | 922 | NULL, /* la_get_symbol_name_matcher */ |
a53b64ea | 923 | &c_varobj_ops, |
721b08c6 | 924 | c_compute_program, |
4be290b2 | 925 | c_is_string_type_p, |
721b08c6 | 926 | "{...}" /* la_struct_too_deep_ellipsis */ |
c906108c SS |
927 | }; |
928 | ||
0874fd07 AB |
929 | /* Class representing the C language. */ |
930 | ||
931 | class c_language : public language_defn | |
932 | { | |
933 | public: | |
934 | c_language () | |
935 | : language_defn (language_c, c_language_data) | |
936 | { /* Nothing. */ } | |
1fb314aa AB |
937 | |
938 | /* See language.h. */ | |
939 | void language_arch_info (struct gdbarch *gdbarch, | |
940 | struct language_arch_info *lai) const override | |
941 | { | |
942 | c_language_arch_info (gdbarch, lai); | |
943 | } | |
8e25bafe AB |
944 | |
945 | /* See language.h. */ | |
946 | compile_instance *get_compile_instance () const override | |
947 | { | |
948 | return c_get_compile_context (); | |
949 | } | |
fbfb0a46 AB |
950 | |
951 | /* See language.h. */ | |
952 | ||
953 | void print_type (struct type *type, const char *varstring, | |
954 | struct ui_file *stream, int show, int level, | |
955 | const struct type_print_options *flags) const override | |
956 | { | |
957 | c_print_type (type, varstring, stream, show, level, flags); | |
958 | } | |
0874fd07 AB |
959 | }; |
960 | ||
961 | /* Single instance of the C language class. */ | |
962 | ||
963 | static c_language c_language_defn; | |
964 | ||
cad351d1 UW |
965 | enum cplus_primitive_types { |
966 | cplus_primitive_type_int, | |
967 | cplus_primitive_type_long, | |
968 | cplus_primitive_type_short, | |
969 | cplus_primitive_type_char, | |
970 | cplus_primitive_type_float, | |
971 | cplus_primitive_type_double, | |
972 | cplus_primitive_type_void, | |
973 | cplus_primitive_type_long_long, | |
974 | cplus_primitive_type_signed_char, | |
975 | cplus_primitive_type_unsigned_char, | |
976 | cplus_primitive_type_unsigned_short, | |
977 | cplus_primitive_type_unsigned_int, | |
978 | cplus_primitive_type_unsigned_long, | |
979 | cplus_primitive_type_unsigned_long_long, | |
980 | cplus_primitive_type_long_double, | |
981 | cplus_primitive_type_complex, | |
982 | cplus_primitive_type_double_complex, | |
983 | cplus_primitive_type_bool, | |
213e4dc2 TJB |
984 | cplus_primitive_type_decfloat, |
985 | cplus_primitive_type_decdouble, | |
986 | cplus_primitive_type_declong, | |
53e710ac PA |
987 | cplus_primitive_type_char16_t, |
988 | cplus_primitive_type_char32_t, | |
53375380 | 989 | cplus_primitive_type_wchar_t, |
cad351d1 | 990 | nr_cplus_primitive_types |
c906108c SS |
991 | }; |
992 | ||
56618e20 TT |
993 | static const char *cplus_extensions[] = |
994 | { | |
995 | ".C", ".cc", ".cp", ".cpp", ".cxx", ".c++", NULL | |
996 | }; | |
997 | ||
0874fd07 AB |
998 | /* Constant data that describes the C++ language. */ |
999 | ||
1000 | extern const struct language_data cplus_language_data = | |
c5aa993b JM |
1001 | { |
1002 | "c++", /* Language name */ | |
6abde28f | 1003 | "C++", |
c906108c | 1004 | language_cplus, |
c906108c | 1005 | range_check_off, |
63872f9d | 1006 | case_sensitive_on, |
7ca2d3a3 | 1007 | array_row_major, |
9a044a89 | 1008 | macro_expansion_c, |
56618e20 | 1009 | cplus_extensions, |
6c7a06a3 | 1010 | &exp_descriptor_c, |
7c8adf68 | 1011 | c_parse, |
e85c3284 | 1012 | null_post_parser, |
c906108c SS |
1013 | c_printchar, /* Print a character constant */ |
1014 | c_printstr, /* Function to print string constant */ | |
1015 | c_emit_char, /* Print a single char */ | |
5c6ce71d | 1016 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
62182190 | 1017 | c_value_print_inner, /* la_value_print_inner */ |
c906108c | 1018 | c_value_print, /* Print a top-level value */ |
2b2d9e11 | 1019 | "this", /* name_of_this */ |
59cc4834 | 1020 | false, /* la_store_sym_names_in_linkage_form_p */ |
1fcb5155 | 1021 | cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
aff410f1 MS |
1022 | cp_class_name_from_physname, /* Language specific |
1023 | class_name_from_physname */ | |
c906108c SS |
1024 | c_op_print_tab, /* expression operators for printing */ |
1025 | 1, /* c-style arrays */ | |
1026 | 0, /* String lower bound */ | |
6084f43a | 1027 | default_word_break_characters, |
eb3ff9a5 | 1028 | default_collect_symbol_completion_matches, |
43cc5389 | 1029 | c_watch_location_expression, |
b5ec771e | 1030 | cp_get_symbol_name_matcher, |
a53b64ea | 1031 | &cplus_varobj_ops, |
721b08c6 | 1032 | cplus_compute_program, |
4be290b2 | 1033 | c_is_string_type_p, |
721b08c6 | 1034 | "{...}" /* la_struct_too_deep_ellipsis */ |
c906108c SS |
1035 | }; |
1036 | ||
0874fd07 AB |
1037 | /* A class for the C++ language. */ |
1038 | ||
1039 | class cplus_language : public language_defn | |
1040 | { | |
1041 | public: | |
1042 | cplus_language () | |
1043 | : language_defn (language_cplus, cplus_language_data) | |
1044 | { /* Nothing. */ } | |
48448202 AB |
1045 | |
1046 | /* See language.h. */ | |
1047 | ||
1048 | struct language_pass_by_ref_info pass_by_reference_info | |
1049 | (struct type *type) const override | |
1050 | { | |
1051 | return cp_pass_by_reference (type); | |
1052 | } | |
1fb314aa AB |
1053 | |
1054 | /* See language.h. */ | |
1055 | void language_arch_info (struct gdbarch *gdbarch, | |
1056 | struct language_arch_info *lai) const override | |
1057 | { | |
1058 | const struct builtin_type *builtin = builtin_type (gdbarch); | |
1059 | ||
1060 | lai->string_char_type = builtin->builtin_char; | |
1061 | lai->primitive_type_vector | |
1062 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_cplus_primitive_types + 1, | |
1063 | struct type *); | |
1064 | lai->primitive_type_vector [cplus_primitive_type_int] | |
1065 | = builtin->builtin_int; | |
1066 | lai->primitive_type_vector [cplus_primitive_type_long] | |
1067 | = builtin->builtin_long; | |
1068 | lai->primitive_type_vector [cplus_primitive_type_short] | |
1069 | = builtin->builtin_short; | |
1070 | lai->primitive_type_vector [cplus_primitive_type_char] | |
1071 | = builtin->builtin_char; | |
1072 | lai->primitive_type_vector [cplus_primitive_type_float] | |
1073 | = builtin->builtin_float; | |
1074 | lai->primitive_type_vector [cplus_primitive_type_double] | |
1075 | = builtin->builtin_double; | |
1076 | lai->primitive_type_vector [cplus_primitive_type_void] | |
1077 | = builtin->builtin_void; | |
1078 | lai->primitive_type_vector [cplus_primitive_type_long_long] | |
1079 | = builtin->builtin_long_long; | |
1080 | lai->primitive_type_vector [cplus_primitive_type_signed_char] | |
1081 | = builtin->builtin_signed_char; | |
1082 | lai->primitive_type_vector [cplus_primitive_type_unsigned_char] | |
1083 | = builtin->builtin_unsigned_char; | |
1084 | lai->primitive_type_vector [cplus_primitive_type_unsigned_short] | |
1085 | = builtin->builtin_unsigned_short; | |
1086 | lai->primitive_type_vector [cplus_primitive_type_unsigned_int] | |
1087 | = builtin->builtin_unsigned_int; | |
1088 | lai->primitive_type_vector [cplus_primitive_type_unsigned_long] | |
1089 | = builtin->builtin_unsigned_long; | |
1090 | lai->primitive_type_vector [cplus_primitive_type_unsigned_long_long] | |
1091 | = builtin->builtin_unsigned_long_long; | |
1092 | lai->primitive_type_vector [cplus_primitive_type_long_double] | |
1093 | = builtin->builtin_long_double; | |
1094 | lai->primitive_type_vector [cplus_primitive_type_complex] | |
1095 | = builtin->builtin_complex; | |
1096 | lai->primitive_type_vector [cplus_primitive_type_double_complex] | |
1097 | = builtin->builtin_double_complex; | |
1098 | lai->primitive_type_vector [cplus_primitive_type_bool] | |
1099 | = builtin->builtin_bool; | |
1100 | lai->primitive_type_vector [cplus_primitive_type_decfloat] | |
1101 | = builtin->builtin_decfloat; | |
1102 | lai->primitive_type_vector [cplus_primitive_type_decdouble] | |
1103 | = builtin->builtin_decdouble; | |
1104 | lai->primitive_type_vector [cplus_primitive_type_declong] | |
1105 | = builtin->builtin_declong; | |
1106 | lai->primitive_type_vector [cplus_primitive_type_char16_t] | |
1107 | = builtin->builtin_char16; | |
1108 | lai->primitive_type_vector [cplus_primitive_type_char32_t] | |
1109 | = builtin->builtin_char32; | |
1110 | lai->primitive_type_vector [cplus_primitive_type_wchar_t] | |
1111 | = builtin->builtin_wchar; | |
1112 | ||
1113 | lai->bool_type_symbol = "bool"; | |
1114 | lai->bool_type_default = builtin->builtin_bool; | |
1115 | } | |
54f4ca46 AB |
1116 | |
1117 | /* See language.h. */ | |
1118 | struct type *lookup_transparent_type (const char *name) const override | |
1119 | { | |
1120 | return cp_lookup_transparent_type (name); | |
1121 | } | |
8e25bafe AB |
1122 | |
1123 | /* See language.h. */ | |
1124 | compile_instance *get_compile_instance () const override | |
1125 | { | |
1126 | return cplus_get_compile_context (); | |
1127 | } | |
fb8006fd AB |
1128 | |
1129 | /* See language.h. */ | |
1130 | unsigned int search_name_hash (const char *name) const override | |
1131 | { | |
1132 | return cp_search_name_hash (name); | |
1133 | } | |
6f827019 AB |
1134 | |
1135 | /* See language.h. */ | |
1136 | bool sniff_from_mangled_name (const char *mangled, | |
1137 | char **demangled) const override | |
1138 | { | |
1139 | *demangled = gdb_demangle (mangled, DMGL_PARAMS | DMGL_ANSI); | |
1140 | return *demangled != NULL; | |
1141 | } | |
fbfb0a46 AB |
1142 | |
1143 | /* See language.h. */ | |
1144 | ||
0a50df5d AB |
1145 | char *demangle (const char *mangled, int options) const override |
1146 | { | |
1147 | return gdb_demangle (mangled, options); | |
1148 | } | |
1149 | ||
1150 | /* See language.h. */ | |
1151 | ||
fbfb0a46 AB |
1152 | void print_type (struct type *type, const char *varstring, |
1153 | struct ui_file *stream, int show, int level, | |
1154 | const struct type_print_options *flags) const override | |
1155 | { | |
1156 | c_print_type (type, varstring, stream, show, level, flags); | |
1157 | } | |
f6eee2d0 AB |
1158 | |
1159 | /* See language.h. */ | |
1160 | ||
1161 | CORE_ADDR skip_trampoline (struct frame_info *fi, | |
1162 | CORE_ADDR pc) const override | |
1163 | { | |
1164 | return cplus_skip_trampoline (fi, pc); | |
1165 | } | |
0874fd07 AB |
1166 | }; |
1167 | ||
1168 | /* The single instance of the C++ language class. */ | |
1169 | ||
1170 | static cplus_language cplus_language_defn; | |
1171 | ||
56618e20 TT |
1172 | static const char *asm_extensions[] = |
1173 | { | |
1174 | ".s", ".sx", ".S", NULL | |
1175 | }; | |
1176 | ||
0874fd07 AB |
1177 | /* Constant data that describes the ASM language. */ |
1178 | ||
1179 | extern const struct language_data asm_language_data = | |
c5aa993b | 1180 | { |
c906108c | 1181 | "asm", /* Language name */ |
6abde28f | 1182 | "assembly", |
c906108c | 1183 | language_asm, |
c906108c | 1184 | range_check_off, |
63872f9d | 1185 | case_sensitive_on, |
7ca2d3a3 | 1186 | array_row_major, |
9a044a89 | 1187 | macro_expansion_c, |
56618e20 | 1188 | asm_extensions, |
6c7a06a3 | 1189 | &exp_descriptor_c, |
7c8adf68 | 1190 | c_parse, |
e85c3284 | 1191 | null_post_parser, |
c906108c SS |
1192 | c_printchar, /* Print a character constant */ |
1193 | c_printstr, /* Function to print string constant */ | |
1194 | c_emit_char, /* Print a single char */ | |
5c6ce71d | 1195 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
62182190 | 1196 | c_value_print_inner, /* la_value_print_inner */ |
c906108c | 1197 | c_value_print, /* Print a top-level value */ |
2b2d9e11 | 1198 | NULL, /* name_of_this */ |
59cc4834 | 1199 | true, /* la_store_sym_names_in_linkage_form_p */ |
5f9a71c3 | 1200 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
aff410f1 MS |
1201 | NULL, /* Language specific |
1202 | class_name_from_physname */ | |
c906108c SS |
1203 | c_op_print_tab, /* expression operators for printing */ |
1204 | 1, /* c-style arrays */ | |
1205 | 0, /* String lower bound */ | |
6084f43a | 1206 | default_word_break_characters, |
eb3ff9a5 | 1207 | default_collect_symbol_completion_matches, |
43cc5389 | 1208 | c_watch_location_expression, |
b5ec771e | 1209 | NULL, /* la_get_symbol_name_matcher */ |
a53b64ea | 1210 | &default_varobj_ops, |
bb2ec1b3 | 1211 | NULL, |
4be290b2 | 1212 | c_is_string_type_p, |
721b08c6 | 1213 | "{...}" /* la_struct_too_deep_ellipsis */ |
c906108c SS |
1214 | }; |
1215 | ||
0874fd07 AB |
1216 | /* A class for the ASM language. */ |
1217 | ||
1218 | class asm_language : public language_defn | |
1219 | { | |
1220 | public: | |
1221 | asm_language () | |
1222 | : language_defn (language_asm, asm_language_data) | |
1223 | { /* Nothing. */ } | |
1fb314aa AB |
1224 | |
1225 | /* See language.h. | |
1226 | ||
1227 | FIXME: Should this have its own arch info method? */ | |
1228 | void language_arch_info (struct gdbarch *gdbarch, | |
1229 | struct language_arch_info *lai) const override | |
1230 | { | |
1231 | c_language_arch_info (gdbarch, lai); | |
1232 | } | |
fbfb0a46 AB |
1233 | |
1234 | /* See language.h. */ | |
1235 | ||
1236 | void print_type (struct type *type, const char *varstring, | |
1237 | struct ui_file *stream, int show, int level, | |
1238 | const struct type_print_options *flags) const override | |
1239 | { | |
1240 | c_print_type (type, varstring, stream, show, level, flags); | |
1241 | } | |
0874fd07 AB |
1242 | }; |
1243 | ||
1244 | /* The single instance of the ASM language class. */ | |
1245 | static asm_language asm_language_defn; | |
1246 | ||
20a0e81d JB |
1247 | /* The following language_defn does not represent a real language. |
1248 | It just provides a minimal support a-la-C that should allow users | |
1249 | to do some simple operations when debugging applications that use | |
1250 | a language currently not supported by GDB. */ | |
1251 | ||
0874fd07 | 1252 | extern const struct language_data minimal_language_data = |
20a0e81d JB |
1253 | { |
1254 | "minimal", /* Language name */ | |
6abde28f | 1255 | "Minimal", |
20a0e81d | 1256 | language_minimal, |
20a0e81d | 1257 | range_check_off, |
20a0e81d | 1258 | case_sensitive_on, |
7ca2d3a3 | 1259 | array_row_major, |
9a044a89 | 1260 | macro_expansion_c, |
56618e20 | 1261 | NULL, |
6c7a06a3 | 1262 | &exp_descriptor_c, |
7c8adf68 | 1263 | c_parse, |
e85c3284 | 1264 | null_post_parser, |
20a0e81d JB |
1265 | c_printchar, /* Print a character constant */ |
1266 | c_printstr, /* Function to print string constant */ | |
1267 | c_emit_char, /* Print a single char */ | |
5c6ce71d | 1268 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
62182190 | 1269 | c_value_print_inner, /* la_value_print_inner */ |
20a0e81d | 1270 | c_value_print, /* Print a top-level value */ |
2b2d9e11 | 1271 | NULL, /* name_of_this */ |
59cc4834 | 1272 | true, /* la_store_sym_names_in_linkage_form_p */ |
5f9a71c3 | 1273 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
aff410f1 MS |
1274 | NULL, /* Language specific |
1275 | class_name_from_physname */ | |
20a0e81d JB |
1276 | c_op_print_tab, /* expression operators for printing */ |
1277 | 1, /* c-style arrays */ | |
1278 | 0, /* String lower bound */ | |
6084f43a | 1279 | default_word_break_characters, |
eb3ff9a5 | 1280 | default_collect_symbol_completion_matches, |
43cc5389 | 1281 | c_watch_location_expression, |
b5ec771e | 1282 | NULL, /* la_get_symbol_name_matcher */ |
a53b64ea | 1283 | &default_varobj_ops, |
bb2ec1b3 | 1284 | NULL, |
4be290b2 | 1285 | c_is_string_type_p, |
721b08c6 | 1286 | "{...}" /* la_struct_too_deep_ellipsis */ |
20a0e81d | 1287 | }; |
0874fd07 AB |
1288 | |
1289 | /* A class for the minimal language. */ | |
1290 | ||
1291 | class minimal_language : public language_defn | |
1292 | { | |
1293 | public: | |
1294 | minimal_language () | |
1295 | : language_defn (language_minimal, minimal_language_data) | |
1296 | { /* Nothing. */ } | |
1fb314aa AB |
1297 | |
1298 | /* See language.h. */ | |
1299 | void language_arch_info (struct gdbarch *gdbarch, | |
1300 | struct language_arch_info *lai) const override | |
1301 | { | |
1302 | c_language_arch_info (gdbarch, lai); | |
1303 | } | |
fbfb0a46 AB |
1304 | |
1305 | /* See language.h. */ | |
1306 | ||
1307 | void print_type (struct type *type, const char *varstring, | |
1308 | struct ui_file *stream, int show, int level, | |
1309 | const struct type_print_options *flags) const override | |
1310 | { | |
1311 | c_print_type (type, varstring, stream, show, level, flags); | |
1312 | } | |
0874fd07 AB |
1313 | }; |
1314 | ||
1315 | /* The single instance of the minimal language class. */ | |
1316 | static minimal_language minimal_language_defn; |