Commit | Line | Data |
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c906108c | 1 | /* Print values for GNU debugger GDB. |
e2ad119d | 2 | |
28e7fd62 | 3 | Copyright (C) 1986-2013 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" | |
21 | #include "gdb_string.h" | |
22 | #include "frame.h" | |
23 | #include "symtab.h" | |
24 | #include "gdbtypes.h" | |
25 | #include "value.h" | |
26 | #include "language.h" | |
27 | #include "expression.h" | |
28 | #include "gdbcore.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "target.h" | |
31 | #include "breakpoint.h" | |
32 | #include "demangle.h" | |
50f182aa | 33 | #include "gdb-demangle.h" |
c906108c SS |
34 | #include "valprint.h" |
35 | #include "annotate.h" | |
c5aa993b JM |
36 | #include "symfile.h" /* for overlay functions */ |
37 | #include "objfiles.h" /* ditto */ | |
c94fdfd0 | 38 | #include "completer.h" /* for completion functions */ |
8b93c638 | 39 | #include "ui-out.h" |
261397f8 | 40 | #include "gdb_assert.h" |
fe898f56 | 41 | #include "block.h" |
92bf2b80 | 42 | #include "disasm.h" |
1a619819 | 43 | #include "dfp.h" |
79a45b7d | 44 | #include "valprint.h" |
a3247a22 PP |
45 | #include "exceptions.h" |
46 | #include "observer.h" | |
47 | #include "solist.h" | |
a3247a22 | 48 | #include "parser-defs.h" |
6c7a06a3 | 49 | #include "charset.h" |
704e9165 | 50 | #include "arch-utils.h" |
e9cafbcc | 51 | #include "cli/cli-utils.h" |
d3ce09f5 | 52 | #include "format.h" |
05cba821 | 53 | #include "source.h" |
c906108c | 54 | |
6a83354a | 55 | #ifdef TUI |
0df8b418 | 56 | #include "tui/tui.h" /* For tui_active et al. */ |
6a83354a AC |
57 | #endif |
58 | ||
c906108c | 59 | struct format_data |
c5aa993b JM |
60 | { |
61 | int count; | |
62 | char format; | |
63 | char size; | |
a6bac58e TT |
64 | |
65 | /* True if the value should be printed raw -- that is, bypassing | |
66 | python-based formatters. */ | |
67 | unsigned char raw; | |
c5aa993b | 68 | }; |
c906108c SS |
69 | |
70 | /* Last specified output format. */ | |
71 | ||
a6bac58e | 72 | static char last_format = 0; |
c906108c SS |
73 | |
74 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
75 | ||
76 | static char last_size = 'w'; | |
77 | ||
5d3729b5 | 78 | /* Default address to examine next, and associated architecture. */ |
c906108c | 79 | |
5d3729b5 | 80 | static struct gdbarch *next_gdbarch; |
c906108c SS |
81 | static CORE_ADDR next_address; |
82 | ||
a4642986 MR |
83 | /* Number of delay instructions following current disassembled insn. */ |
84 | ||
85 | static int branch_delay_insns; | |
86 | ||
c906108c SS |
87 | /* Last address examined. */ |
88 | ||
89 | static CORE_ADDR last_examine_address; | |
90 | ||
91 | /* Contents of last address examined. | |
92 | This is not valid past the end of the `x' command! */ | |
93 | ||
3d6d86c6 | 94 | static struct value *last_examine_value; |
c906108c SS |
95 | |
96 | /* Largest offset between a symbolic value and an address, that will be | |
97 | printed as `0x1234 <symbol+offset>'. */ | |
98 | ||
99 | static unsigned int max_symbolic_offset = UINT_MAX; | |
920d2a44 AC |
100 | static void |
101 | show_max_symbolic_offset (struct ui_file *file, int from_tty, | |
102 | struct cmd_list_element *c, const char *value) | |
103 | { | |
3e43a32a MS |
104 | fprintf_filtered (file, |
105 | _("The largest offset that will be " | |
106 | "printed in <symbol+1234> form is %s.\n"), | |
920d2a44 AC |
107 | value); |
108 | } | |
c906108c SS |
109 | |
110 | /* Append the source filename and linenumber of the symbol when | |
111 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
112 | static int print_symbol_filename = 0; | |
920d2a44 AC |
113 | static void |
114 | show_print_symbol_filename (struct ui_file *file, int from_tty, | |
115 | struct cmd_list_element *c, const char *value) | |
116 | { | |
3e43a32a MS |
117 | fprintf_filtered (file, _("Printing of source filename and " |
118 | "line number with <symbol> is %s.\n"), | |
920d2a44 AC |
119 | value); |
120 | } | |
c906108c SS |
121 | |
122 | /* Number of auto-display expression currently being displayed. | |
9d8fa392 | 123 | So that we can disable it if we get a signal within it. |
c906108c SS |
124 | -1 when not doing one. */ |
125 | ||
5a18e302 | 126 | static int current_display_number; |
c906108c | 127 | |
c906108c | 128 | struct display |
c5aa993b JM |
129 | { |
130 | /* Chain link to next auto-display item. */ | |
131 | struct display *next; | |
6c95b8df | 132 | |
fa8a61dc TT |
133 | /* The expression as the user typed it. */ |
134 | char *exp_string; | |
6c95b8df | 135 | |
c5aa993b JM |
136 | /* Expression to be evaluated and displayed. */ |
137 | struct expression *exp; | |
6c95b8df | 138 | |
c5aa993b JM |
139 | /* Item number of this auto-display item. */ |
140 | int number; | |
6c95b8df | 141 | |
c5aa993b JM |
142 | /* Display format specified. */ |
143 | struct format_data format; | |
6c95b8df PA |
144 | |
145 | /* Program space associated with `block'. */ | |
146 | struct program_space *pspace; | |
147 | ||
0df8b418 | 148 | /* Innermost block required by this expression when evaluated. */ |
270140bd | 149 | const struct block *block; |
6c95b8df | 150 | |
0df8b418 | 151 | /* Status of this display (enabled or disabled). */ |
b5de0fa7 | 152 | int enabled_p; |
c5aa993b | 153 | }; |
c906108c SS |
154 | |
155 | /* Chain of expressions whose values should be displayed | |
156 | automatically each time the program stops. */ | |
157 | ||
158 | static struct display *display_chain; | |
159 | ||
160 | static int display_number; | |
161 | ||
c9174737 PA |
162 | /* Walk the following statement or block through all displays. |
163 | ALL_DISPLAYS_SAFE does so even if the statement deletes the current | |
164 | display. */ | |
3c3fe74c PA |
165 | |
166 | #define ALL_DISPLAYS(B) \ | |
167 | for (B = display_chain; B; B = B->next) | |
168 | ||
c9174737 PA |
169 | #define ALL_DISPLAYS_SAFE(B,TMP) \ |
170 | for (B = display_chain; \ | |
171 | B ? (TMP = B->next, 1): 0; \ | |
172 | B = TMP) | |
173 | ||
0df8b418 | 174 | /* Prototypes for exported functions. */ |
c906108c | 175 | |
a14ed312 | 176 | void _initialize_printcmd (void); |
c906108c | 177 | |
0df8b418 | 178 | /* Prototypes for local functions. */ |
c906108c | 179 | |
a14ed312 | 180 | static void do_one_display (struct display *); |
c906108c | 181 | \f |
c5aa993b | 182 | |
c906108c SS |
183 | /* Decode a format specification. *STRING_PTR should point to it. |
184 | OFORMAT and OSIZE are used as defaults for the format and size | |
185 | if none are given in the format specification. | |
186 | If OSIZE is zero, then the size field of the returned value | |
187 | should be set only if a size is explicitly specified by the | |
188 | user. | |
189 | The structure returned describes all the data | |
190 | found in the specification. In addition, *STRING_PTR is advanced | |
191 | past the specification and past all whitespace following it. */ | |
192 | ||
193 | static struct format_data | |
6f937416 | 194 | decode_format (const char **string_ptr, int oformat, int osize) |
c906108c SS |
195 | { |
196 | struct format_data val; | |
6f937416 | 197 | const char *p = *string_ptr; |
c906108c SS |
198 | |
199 | val.format = '?'; | |
200 | val.size = '?'; | |
201 | val.count = 1; | |
a6bac58e | 202 | val.raw = 0; |
c906108c SS |
203 | |
204 | if (*p >= '0' && *p <= '9') | |
205 | val.count = atoi (p); | |
c5aa993b JM |
206 | while (*p >= '0' && *p <= '9') |
207 | p++; | |
c906108c SS |
208 | |
209 | /* Now process size or format letters that follow. */ | |
210 | ||
211 | while (1) | |
212 | { | |
213 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
214 | val.size = *p++; | |
a6bac58e TT |
215 | else if (*p == 'r') |
216 | { | |
217 | val.raw = 1; | |
218 | p++; | |
219 | } | |
c906108c SS |
220 | else if (*p >= 'a' && *p <= 'z') |
221 | val.format = *p++; | |
222 | else | |
223 | break; | |
224 | } | |
225 | ||
c5aa993b JM |
226 | while (*p == ' ' || *p == '\t') |
227 | p++; | |
c906108c SS |
228 | *string_ptr = p; |
229 | ||
230 | /* Set defaults for format and size if not specified. */ | |
231 | if (val.format == '?') | |
232 | { | |
233 | if (val.size == '?') | |
234 | { | |
235 | /* Neither has been specified. */ | |
236 | val.format = oformat; | |
237 | val.size = osize; | |
238 | } | |
239 | else | |
240 | /* If a size is specified, any format makes a reasonable | |
241 | default except 'i'. */ | |
242 | val.format = oformat == 'i' ? 'x' : oformat; | |
243 | } | |
244 | else if (val.size == '?') | |
245 | switch (val.format) | |
246 | { | |
247 | case 'a': | |
5d3729b5 UW |
248 | /* Pick the appropriate size for an address. This is deferred |
249 | until do_examine when we know the actual architecture to use. | |
250 | A special size value of 'a' is used to indicate this case. */ | |
251 | val.size = osize ? 'a' : osize; | |
c906108c SS |
252 | break; |
253 | case 'f': | |
254 | /* Floating point has to be word or giantword. */ | |
255 | if (osize == 'w' || osize == 'g') | |
256 | val.size = osize; | |
257 | else | |
258 | /* Default it to giantword if the last used size is not | |
259 | appropriate. */ | |
260 | val.size = osize ? 'g' : osize; | |
261 | break; | |
262 | case 'c': | |
263 | /* Characters default to one byte. */ | |
264 | val.size = osize ? 'b' : osize; | |
265 | break; | |
9a22f0d0 | 266 | case 's': |
3e43a32a MS |
267 | /* Display strings with byte size chars unless explicitly |
268 | specified. */ | |
9a22f0d0 PM |
269 | val.size = '\0'; |
270 | break; | |
271 | ||
c906108c SS |
272 | default: |
273 | /* The default is the size most recently specified. */ | |
274 | val.size = osize; | |
275 | } | |
276 | ||
277 | return val; | |
278 | } | |
279 | \f | |
79a45b7d | 280 | /* Print value VAL on stream according to OPTIONS. |
c906108c | 281 | Do not end with a newline. |
c906108c | 282 | SIZE is the letter for the size of datum being printed. |
ea37ba09 DJ |
283 | This is used to pad hex numbers so they line up. SIZE is 0 |
284 | for print / output and set for examine. */ | |
c906108c SS |
285 | |
286 | static void | |
79a45b7d TT |
287 | print_formatted (struct value *val, int size, |
288 | const struct value_print_options *options, | |
fba45db2 | 289 | struct ui_file *stream) |
c906108c | 290 | { |
df407dfe | 291 | struct type *type = check_typedef (value_type (val)); |
c906108c SS |
292 | int len = TYPE_LENGTH (type); |
293 | ||
294 | if (VALUE_LVAL (val) == lval_memory) | |
42ae5230 | 295 | next_address = value_address (val) + len; |
c906108c | 296 | |
ea37ba09 | 297 | if (size) |
c906108c | 298 | { |
79a45b7d | 299 | switch (options->format) |
ea37ba09 DJ |
300 | { |
301 | case 's': | |
6c7a06a3 TT |
302 | { |
303 | struct type *elttype = value_type (val); | |
ad3bbd48 | 304 | |
42ae5230 | 305 | next_address = (value_address (val) |
09ca9e2e | 306 | + val_print_string (elttype, NULL, |
42ae5230 | 307 | value_address (val), -1, |
9a22f0d0 | 308 | stream, options) * len); |
6c7a06a3 | 309 | } |
ea37ba09 | 310 | return; |
c906108c | 311 | |
ea37ba09 DJ |
312 | case 'i': |
313 | /* We often wrap here if there are long symbolic names. */ | |
314 | wrap_here (" "); | |
42ae5230 | 315 | next_address = (value_address (val) |
13274fc3 UW |
316 | + gdb_print_insn (get_type_arch (type), |
317 | value_address (val), stream, | |
ea37ba09 DJ |
318 | &branch_delay_insns)); |
319 | return; | |
320 | } | |
c906108c | 321 | } |
ea37ba09 | 322 | |
79a45b7d | 323 | if (options->format == 0 || options->format == 's' |
4e885b20 | 324 | || TYPE_CODE (type) == TYPE_CODE_REF |
ea37ba09 DJ |
325 | || TYPE_CODE (type) == TYPE_CODE_ARRAY |
326 | || TYPE_CODE (type) == TYPE_CODE_STRING | |
327 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
328 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
329 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
79a45b7d | 330 | value_print (val, stream, options); |
ea37ba09 | 331 | else |
b021a221 MS |
332 | /* User specified format, so don't look to the type to tell us |
333 | what to do. */ | |
ab2188aa PA |
334 | val_print_scalar_formatted (type, |
335 | value_contents_for_printing (val), | |
336 | value_embedded_offset (val), | |
337 | val, | |
338 | options, size, stream); | |
c906108c SS |
339 | } |
340 | ||
b806fb9a UW |
341 | /* Return builtin floating point type of same length as TYPE. |
342 | If no such type is found, return TYPE itself. */ | |
343 | static struct type * | |
50810684 | 344 | float_type_from_length (struct type *type) |
b806fb9a | 345 | { |
50810684 | 346 | struct gdbarch *gdbarch = get_type_arch (type); |
b806fb9a | 347 | const struct builtin_type *builtin = builtin_type (gdbarch); |
b806fb9a | 348 | |
744a8059 | 349 | if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_float)) |
b806fb9a | 350 | type = builtin->builtin_float; |
744a8059 | 351 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_double)) |
b806fb9a | 352 | type = builtin->builtin_double; |
744a8059 | 353 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_long_double)) |
b806fb9a UW |
354 | type = builtin->builtin_long_double; |
355 | ||
356 | return type; | |
357 | } | |
358 | ||
c906108c | 359 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, |
ab2188aa PA |
360 | according to OPTIONS and SIZE on STREAM. Formats s and i are not |
361 | supported at this level. */ | |
c906108c SS |
362 | |
363 | void | |
366b1cbf | 364 | print_scalar_formatted (const void *valaddr, struct type *type, |
79a45b7d TT |
365 | const struct value_print_options *options, |
366 | int size, struct ui_file *stream) | |
c906108c | 367 | { |
50810684 | 368 | struct gdbarch *gdbarch = get_type_arch (type); |
81cb7cc9 | 369 | LONGEST val_long = 0; |
c906108c | 370 | unsigned int len = TYPE_LENGTH (type); |
69feb676 | 371 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 372 | |
ab2188aa PA |
373 | /* String printing should go through val_print_scalar_formatted. */ |
374 | gdb_assert (options->format != 's'); | |
ea37ba09 | 375 | |
6b9acc27 JJ |
376 | if (len > sizeof(LONGEST) && |
377 | (TYPE_CODE (type) == TYPE_CODE_INT | |
378 | || TYPE_CODE (type) == TYPE_CODE_ENUM)) | |
379 | { | |
79a45b7d | 380 | switch (options->format) |
6b9acc27 JJ |
381 | { |
382 | case 'o': | |
d44e8473 | 383 | print_octal_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
384 | return; |
385 | case 'u': | |
386 | case 'd': | |
d44e8473 | 387 | print_decimal_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
388 | return; |
389 | case 't': | |
d44e8473 | 390 | print_binary_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
391 | return; |
392 | case 'x': | |
d44e8473 | 393 | print_hex_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
394 | return; |
395 | case 'c': | |
6c7a06a3 | 396 | print_char_chars (stream, type, valaddr, len, byte_order); |
6b9acc27 JJ |
397 | return; |
398 | default: | |
399 | break; | |
400 | }; | |
401 | } | |
402 | ||
79a45b7d | 403 | if (options->format != 'f') |
c906108c SS |
404 | val_long = unpack_long (type, valaddr); |
405 | ||
ef166cf4 | 406 | /* If the value is a pointer, and pointers and addresses are not the |
d0aee0c4 | 407 | same, then at this point, the value's length (in target bytes) is |
17a912b6 | 408 | gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */ |
ef166cf4 | 409 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
69feb676 | 410 | len = gdbarch_addr_bit (gdbarch) / TARGET_CHAR_BIT; |
ef166cf4 | 411 | |
c906108c SS |
412 | /* If we are printing it as unsigned, truncate it in case it is actually |
413 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
414 | (if shorts are 16 bits) instead of 4294967295). */ | |
1fac167a | 415 | if (options->format != 'd' || TYPE_UNSIGNED (type)) |
c906108c SS |
416 | { |
417 | if (len < sizeof (LONGEST)) | |
418 | val_long &= ((LONGEST) 1 << HOST_CHAR_BIT * len) - 1; | |
419 | } | |
420 | ||
79a45b7d | 421 | switch (options->format) |
c906108c SS |
422 | { |
423 | case 'x': | |
424 | if (!size) | |
425 | { | |
675dcf4f | 426 | /* No size specified, like in print. Print varying # of digits. */ |
c906108c SS |
427 | print_longest (stream, 'x', 1, val_long); |
428 | } | |
429 | else | |
430 | switch (size) | |
431 | { | |
432 | case 'b': | |
433 | case 'h': | |
434 | case 'w': | |
435 | case 'g': | |
436 | print_longest (stream, size, 1, val_long); | |
437 | break; | |
438 | default: | |
8a3fe4f8 | 439 | error (_("Undefined output size \"%c\"."), size); |
c906108c SS |
440 | } |
441 | break; | |
442 | ||
443 | case 'd': | |
444 | print_longest (stream, 'd', 1, val_long); | |
445 | break; | |
446 | ||
447 | case 'u': | |
448 | print_longest (stream, 'u', 0, val_long); | |
449 | break; | |
450 | ||
451 | case 'o': | |
452 | if (val_long) | |
453 | print_longest (stream, 'o', 1, val_long); | |
454 | else | |
455 | fprintf_filtered (stream, "0"); | |
456 | break; | |
457 | ||
458 | case 'a': | |
593de6a6 | 459 | { |
593de6a6 | 460 | CORE_ADDR addr = unpack_pointer (type, valaddr); |
ad3bbd48 | 461 | |
5af949e3 | 462 | print_address (gdbarch, addr, stream); |
593de6a6 | 463 | } |
c906108c SS |
464 | break; |
465 | ||
466 | case 'c': | |
79a45b7d TT |
467 | { |
468 | struct value_print_options opts = *options; | |
69feb676 | 469 | |
ad3bbd48 | 470 | opts.format = 0; |
79a45b7d | 471 | if (TYPE_UNSIGNED (type)) |
69feb676 UW |
472 | type = builtin_type (gdbarch)->builtin_true_unsigned_char; |
473 | else | |
474 | type = builtin_type (gdbarch)->builtin_true_char; | |
475 | ||
476 | value_print (value_from_longest (type, val_long), stream, &opts); | |
79a45b7d | 477 | } |
c906108c SS |
478 | break; |
479 | ||
480 | case 'f': | |
50810684 | 481 | type = float_type_from_length (type); |
c906108c SS |
482 | print_floating (valaddr, type, stream); |
483 | break; | |
484 | ||
485 | case 0: | |
675dcf4f MK |
486 | internal_error (__FILE__, __LINE__, |
487 | _("failed internal consistency check")); | |
c906108c SS |
488 | |
489 | case 't': | |
490 | /* Binary; 't' stands for "two". */ | |
491 | { | |
c5aa993b JM |
492 | char bits[8 * (sizeof val_long) + 1]; |
493 | char buf[8 * (sizeof val_long) + 32]; | |
c906108c SS |
494 | char *cp = bits; |
495 | int width; | |
496 | ||
c5aa993b JM |
497 | if (!size) |
498 | width = 8 * (sizeof val_long); | |
499 | else | |
500 | switch (size) | |
c906108c SS |
501 | { |
502 | case 'b': | |
503 | width = 8; | |
504 | break; | |
505 | case 'h': | |
506 | width = 16; | |
507 | break; | |
508 | case 'w': | |
509 | width = 32; | |
510 | break; | |
511 | case 'g': | |
512 | width = 64; | |
513 | break; | |
514 | default: | |
8a3fe4f8 | 515 | error (_("Undefined output size \"%c\"."), size); |
c906108c SS |
516 | } |
517 | ||
c5aa993b JM |
518 | bits[width] = '\0'; |
519 | while (width-- > 0) | |
520 | { | |
521 | bits[width] = (val_long & 1) ? '1' : '0'; | |
522 | val_long >>= 1; | |
523 | } | |
c906108c SS |
524 | if (!size) |
525 | { | |
526 | while (*cp && *cp == '0') | |
527 | cp++; | |
528 | if (*cp == '\0') | |
529 | cp--; | |
530 | } | |
daac021a | 531 | strncpy (buf, cp, sizeof (bits)); |
306d9ac5 | 532 | fputs_filtered (buf, stream); |
c906108c SS |
533 | } |
534 | break; | |
535 | ||
536 | default: | |
79a45b7d | 537 | error (_("Undefined output format \"%c\"."), options->format); |
c906108c SS |
538 | } |
539 | } | |
540 | ||
541 | /* Specify default address for `x' command. | |
675dcf4f | 542 | The `info lines' command uses this. */ |
c906108c SS |
543 | |
544 | void | |
8b9b9e1a | 545 | set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 546 | { |
8b9b9e1a UW |
547 | struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
548 | ||
5d3729b5 | 549 | next_gdbarch = gdbarch; |
c906108c SS |
550 | next_address = addr; |
551 | ||
552 | /* Make address available to the user as $_. */ | |
553 | set_internalvar (lookup_internalvar ("_"), | |
8b9b9e1a | 554 | value_from_pointer (ptr_type, addr)); |
c906108c SS |
555 | } |
556 | ||
557 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
558 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
559 | Optionally also print source file and line number, if available. | |
560 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
561 | or to interpret it as a possible C++ name and convert it back to source | |
562 | form. However note that DO_DEMANGLE can be overridden by the specific | |
9cb709b6 TT |
563 | settings of the demangle and asm_demangle variables. Returns |
564 | non-zero if anything was printed; zero otherwise. */ | |
c906108c | 565 | |
9cb709b6 | 566 | int |
22e722e1 DJ |
567 | print_address_symbolic (struct gdbarch *gdbarch, CORE_ADDR addr, |
568 | struct ui_file *stream, | |
675dcf4f | 569 | int do_demangle, char *leadin) |
dfcd3bfb JM |
570 | { |
571 | char *name = NULL; | |
572 | char *filename = NULL; | |
573 | int unmapped = 0; | |
574 | int offset = 0; | |
575 | int line = 0; | |
576 | ||
675dcf4f | 577 | /* Throw away both name and filename. */ |
2f9429ae AC |
578 | struct cleanup *cleanup_chain = make_cleanup (free_current_contents, &name); |
579 | make_cleanup (free_current_contents, &filename); | |
dfcd3bfb | 580 | |
22e722e1 | 581 | if (build_address_symbolic (gdbarch, addr, do_demangle, &name, &offset, |
675dcf4f | 582 | &filename, &line, &unmapped)) |
2f9429ae AC |
583 | { |
584 | do_cleanups (cleanup_chain); | |
9cb709b6 | 585 | return 0; |
2f9429ae | 586 | } |
dfcd3bfb JM |
587 | |
588 | fputs_filtered (leadin, stream); | |
589 | if (unmapped) | |
590 | fputs_filtered ("<*", stream); | |
591 | else | |
592 | fputs_filtered ("<", stream); | |
593 | fputs_filtered (name, stream); | |
594 | if (offset != 0) | |
595 | fprintf_filtered (stream, "+%u", (unsigned int) offset); | |
596 | ||
597 | /* Append source filename and line number if desired. Give specific | |
598 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
599 | if (print_symbol_filename && filename != NULL) | |
600 | { | |
601 | if (line != -1) | |
602 | fprintf_filtered (stream, " at %s:%d", filename, line); | |
603 | else | |
604 | fprintf_filtered (stream, " in %s", filename); | |
605 | } | |
606 | if (unmapped) | |
607 | fputs_filtered ("*>", stream); | |
608 | else | |
609 | fputs_filtered (">", stream); | |
610 | ||
611 | do_cleanups (cleanup_chain); | |
9cb709b6 | 612 | return 1; |
dfcd3bfb JM |
613 | } |
614 | ||
615 | /* Given an address ADDR return all the elements needed to print the | |
0df8b418 | 616 | address in a symbolic form. NAME can be mangled or not depending |
dfcd3bfb | 617 | on DO_DEMANGLE (and also on the asm_demangle global variable, |
0df8b418 MS |
618 | manipulated via ''set print asm-demangle''). Return 0 in case of |
619 | success, when all the info in the OUT paramters is valid. Return 1 | |
620 | otherwise. */ | |
dfcd3bfb | 621 | int |
22e722e1 DJ |
622 | build_address_symbolic (struct gdbarch *gdbarch, |
623 | CORE_ADDR addr, /* IN */ | |
dfcd3bfb JM |
624 | int do_demangle, /* IN */ |
625 | char **name, /* OUT */ | |
626 | int *offset, /* OUT */ | |
627 | char **filename, /* OUT */ | |
628 | int *line, /* OUT */ | |
629 | int *unmapped) /* OUT */ | |
c906108c SS |
630 | { |
631 | struct minimal_symbol *msymbol; | |
632 | struct symbol *symbol; | |
c906108c | 633 | CORE_ADDR name_location = 0; |
714835d5 | 634 | struct obj_section *section = NULL; |
0d5cff50 | 635 | const char *name_temp = ""; |
dfcd3bfb | 636 | |
89c83b10 | 637 | /* Let's say it is mapped (not unmapped). */ |
dfcd3bfb | 638 | *unmapped = 0; |
c906108c | 639 | |
dfcd3bfb | 640 | /* Determine if the address is in an overlay, and whether it is |
675dcf4f | 641 | mapped. */ |
c906108c SS |
642 | if (overlay_debugging) |
643 | { | |
644 | section = find_pc_overlay (addr); | |
645 | if (pc_in_unmapped_range (addr, section)) | |
646 | { | |
dfcd3bfb | 647 | *unmapped = 1; |
c906108c SS |
648 | addr = overlay_mapped_address (addr, section); |
649 | } | |
650 | } | |
651 | ||
c906108c SS |
652 | /* First try to find the address in the symbol table, then |
653 | in the minsyms. Take the closest one. */ | |
654 | ||
655 | /* This is defective in the sense that it only finds text symbols. So | |
656 | really this is kind of pointless--we should make sure that the | |
657 | minimal symbols have everything we need (by changing that we could | |
658 | save some memory, but for many debug format--ELF/DWARF or | |
659 | anything/stabs--it would be inconvenient to eliminate those minimal | |
660 | symbols anyway). */ | |
7cbd4a93 | 661 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section).minsym; |
c906108c SS |
662 | symbol = find_pc_sect_function (addr, section); |
663 | ||
664 | if (symbol) | |
665 | { | |
22e722e1 DJ |
666 | /* If this is a function (i.e. a code address), strip out any |
667 | non-address bits. For instance, display a pointer to the | |
668 | first instruction of a Thumb function as <function>; the | |
669 | second instruction will be <function+2>, even though the | |
670 | pointer is <function+3>. This matches the ISA behavior. */ | |
671 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
672 | ||
c906108c | 673 | name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol)); |
406fc7fb | 674 | if (do_demangle || asm_demangle) |
de5ad195 | 675 | name_temp = SYMBOL_PRINT_NAME (symbol); |
c906108c | 676 | else |
3567439c | 677 | name_temp = SYMBOL_LINKAGE_NAME (symbol); |
c906108c SS |
678 | } |
679 | ||
9cb709b6 | 680 | if (msymbol != NULL |
d9eaeb59 | 681 | && MSYMBOL_HAS_SIZE (msymbol) |
9cb709b6 TT |
682 | && MSYMBOL_SIZE (msymbol) == 0 |
683 | && MSYMBOL_TYPE (msymbol) != mst_text | |
684 | && MSYMBOL_TYPE (msymbol) != mst_text_gnu_ifunc | |
685 | && MSYMBOL_TYPE (msymbol) != mst_file_text) | |
686 | msymbol = NULL; | |
687 | ||
c906108c SS |
688 | if (msymbol != NULL) |
689 | { | |
690 | if (SYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL) | |
691 | { | |
fe8400b4 WN |
692 | /* If this is a function (i.e. a code address), strip out any |
693 | non-address bits. For instance, display a pointer to the | |
694 | first instruction of a Thumb function as <function>; the | |
695 | second instruction will be <function+2>, even though the | |
696 | pointer is <function+3>. This matches the ISA behavior. */ | |
697 | if (MSYMBOL_TYPE (msymbol) == mst_text | |
698 | || MSYMBOL_TYPE (msymbol) == mst_text_gnu_ifunc | |
699 | || MSYMBOL_TYPE (msymbol) == mst_file_text | |
700 | || MSYMBOL_TYPE (msymbol) == mst_solib_trampoline) | |
701 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
702 | ||
c906108c SS |
703 | /* The msymbol is closer to the address than the symbol; |
704 | use the msymbol instead. */ | |
705 | symbol = 0; | |
c906108c | 706 | name_location = SYMBOL_VALUE_ADDRESS (msymbol); |
406fc7fb | 707 | if (do_demangle || asm_demangle) |
de5ad195 | 708 | name_temp = SYMBOL_PRINT_NAME (msymbol); |
c906108c | 709 | else |
3567439c | 710 | name_temp = SYMBOL_LINKAGE_NAME (msymbol); |
c906108c SS |
711 | } |
712 | } | |
713 | if (symbol == NULL && msymbol == NULL) | |
dfcd3bfb | 714 | return 1; |
c906108c | 715 | |
c906108c SS |
716 | /* If the nearest symbol is too far away, don't print anything symbolic. */ |
717 | ||
718 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
719 | CORE_ADDR. But when we detect unsigned wraparound in the | |
720 | CORE_ADDR math, we ignore this test and print the offset, | |
721 | because addr+max_symbolic_offset has wrapped through the end | |
722 | of the address space back to the beginning, giving bogus comparison. */ | |
723 | if (addr > name_location + max_symbolic_offset | |
724 | && name_location + max_symbolic_offset > name_location) | |
dfcd3bfb | 725 | return 1; |
c906108c | 726 | |
dfcd3bfb JM |
727 | *offset = addr - name_location; |
728 | ||
729 | *name = xstrdup (name_temp); | |
c906108c | 730 | |
c906108c SS |
731 | if (print_symbol_filename) |
732 | { | |
733 | struct symtab_and_line sal; | |
734 | ||
735 | sal = find_pc_sect_line (addr, section, 0); | |
736 | ||
737 | if (sal.symtab) | |
dfcd3bfb | 738 | { |
05cba821 | 739 | *filename = xstrdup (symtab_to_filename_for_display (sal.symtab)); |
dfcd3bfb JM |
740 | *line = sal.line; |
741 | } | |
c906108c | 742 | } |
dfcd3bfb | 743 | return 0; |
c906108c SS |
744 | } |
745 | ||
c906108c SS |
746 | |
747 | /* Print address ADDR symbolically on STREAM. | |
748 | First print it as a number. Then perhaps print | |
749 | <SYMBOL + OFFSET> after the number. */ | |
750 | ||
751 | void | |
5af949e3 UW |
752 | print_address (struct gdbarch *gdbarch, |
753 | CORE_ADDR addr, struct ui_file *stream) | |
c906108c | 754 | { |
5af949e3 | 755 | fputs_filtered (paddress (gdbarch, addr), stream); |
22e722e1 | 756 | print_address_symbolic (gdbarch, addr, stream, asm_demangle, " "); |
c906108c SS |
757 | } |
758 | ||
2b28d209 PP |
759 | /* Return a prefix for instruction address: |
760 | "=> " for current instruction, else " ". */ | |
761 | ||
762 | const char * | |
763 | pc_prefix (CORE_ADDR addr) | |
764 | { | |
765 | if (has_stack_frames ()) | |
766 | { | |
767 | struct frame_info *frame; | |
768 | CORE_ADDR pc; | |
769 | ||
770 | frame = get_selected_frame (NULL); | |
ce406537 | 771 | if (get_frame_pc_if_available (frame, &pc) && pc == addr) |
2b28d209 PP |
772 | return "=> "; |
773 | } | |
774 | return " "; | |
775 | } | |
776 | ||
c906108c SS |
777 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE |
778 | controls whether to print the symbolic name "raw" or demangled. | |
9cb709b6 | 779 | Return non-zero if anything was printed; zero otherwise. */ |
c906108c | 780 | |
9cb709b6 | 781 | int |
edf0c1b7 TT |
782 | print_address_demangle (const struct value_print_options *opts, |
783 | struct gdbarch *gdbarch, CORE_ADDR addr, | |
5af949e3 | 784 | struct ui_file *stream, int do_demangle) |
c906108c | 785 | { |
1d51a733 | 786 | if (opts->addressprint) |
c906108c | 787 | { |
5af949e3 | 788 | fputs_filtered (paddress (gdbarch, addr), stream); |
22e722e1 | 789 | print_address_symbolic (gdbarch, addr, stream, do_demangle, " "); |
c906108c SS |
790 | } |
791 | else | |
792 | { | |
9cb709b6 | 793 | return print_address_symbolic (gdbarch, addr, stream, do_demangle, ""); |
c906108c | 794 | } |
9cb709b6 | 795 | return 1; |
c906108c SS |
796 | } |
797 | \f | |
798 | ||
c906108c SS |
799 | /* Examine data at address ADDR in format FMT. |
800 | Fetch it from memory and print on gdb_stdout. */ | |
801 | ||
802 | static void | |
5d3729b5 | 803 | do_examine (struct format_data fmt, struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 804 | { |
52f0bd74 AC |
805 | char format = 0; |
806 | char size; | |
807 | int count = 1; | |
c906108c | 808 | struct type *val_type = NULL; |
52f0bd74 AC |
809 | int i; |
810 | int maxelts; | |
79a45b7d | 811 | struct value_print_options opts; |
c906108c SS |
812 | |
813 | format = fmt.format; | |
814 | size = fmt.size; | |
815 | count = fmt.count; | |
5d3729b5 | 816 | next_gdbarch = gdbarch; |
c906108c | 817 | next_address = addr; |
c906108c | 818 | |
9a22f0d0 PM |
819 | /* Instruction format implies fetch single bytes |
820 | regardless of the specified size. | |
821 | The case of strings is handled in decode_format, only explicit | |
822 | size operator are not changed to 'b'. */ | |
823 | if (format == 'i') | |
c906108c SS |
824 | size = 'b'; |
825 | ||
5d3729b5 UW |
826 | if (size == 'a') |
827 | { | |
828 | /* Pick the appropriate size for an address. */ | |
829 | if (gdbarch_ptr_bit (next_gdbarch) == 64) | |
830 | size = 'g'; | |
831 | else if (gdbarch_ptr_bit (next_gdbarch) == 32) | |
832 | size = 'w'; | |
833 | else if (gdbarch_ptr_bit (next_gdbarch) == 16) | |
834 | size = 'h'; | |
835 | else | |
836 | /* Bad value for gdbarch_ptr_bit. */ | |
837 | internal_error (__FILE__, __LINE__, | |
838 | _("failed internal consistency check")); | |
839 | } | |
840 | ||
841 | if (size == 'b') | |
df4df182 | 842 | val_type = builtin_type (next_gdbarch)->builtin_int8; |
c906108c | 843 | else if (size == 'h') |
df4df182 | 844 | val_type = builtin_type (next_gdbarch)->builtin_int16; |
c906108c | 845 | else if (size == 'w') |
df4df182 | 846 | val_type = builtin_type (next_gdbarch)->builtin_int32; |
c906108c | 847 | else if (size == 'g') |
df4df182 | 848 | val_type = builtin_type (next_gdbarch)->builtin_int64; |
c906108c | 849 | |
9a22f0d0 PM |
850 | if (format == 's') |
851 | { | |
852 | struct type *char_type = NULL; | |
ad3bbd48 | 853 | |
9a22f0d0 PM |
854 | /* Search for "char16_t" or "char32_t" types or fall back to 8-bit char |
855 | if type is not found. */ | |
856 | if (size == 'h') | |
857 | char_type = builtin_type (next_gdbarch)->builtin_char16; | |
858 | else if (size == 'w') | |
859 | char_type = builtin_type (next_gdbarch)->builtin_char32; | |
860 | if (char_type) | |
861 | val_type = char_type; | |
862 | else | |
863 | { | |
864 | if (size != '\0' && size != 'b') | |
0df8b418 MS |
865 | warning (_("Unable to display strings with " |
866 | "size '%c', using 'b' instead."), size); | |
9a22f0d0 PM |
867 | size = 'b'; |
868 | val_type = builtin_type (next_gdbarch)->builtin_int8; | |
869 | } | |
870 | } | |
871 | ||
c906108c SS |
872 | maxelts = 8; |
873 | if (size == 'w') | |
874 | maxelts = 4; | |
875 | if (size == 'g') | |
876 | maxelts = 2; | |
877 | if (format == 's' || format == 'i') | |
878 | maxelts = 1; | |
879 | ||
79a45b7d TT |
880 | get_formatted_print_options (&opts, format); |
881 | ||
c906108c SS |
882 | /* Print as many objects as specified in COUNT, at most maxelts per line, |
883 | with the address of the next one at the start of each line. */ | |
884 | ||
885 | while (count > 0) | |
886 | { | |
887 | QUIT; | |
2b28d209 PP |
888 | if (format == 'i') |
889 | fputs_filtered (pc_prefix (next_address), gdb_stdout); | |
5af949e3 | 890 | print_address (next_gdbarch, next_address, gdb_stdout); |
c906108c SS |
891 | printf_filtered (":"); |
892 | for (i = maxelts; | |
893 | i > 0 && count > 0; | |
894 | i--, count--) | |
895 | { | |
896 | printf_filtered ("\t"); | |
897 | /* Note that print_formatted sets next_address for the next | |
898 | object. */ | |
899 | last_examine_address = next_address; | |
900 | ||
901 | if (last_examine_value) | |
902 | value_free (last_examine_value); | |
903 | ||
904 | /* The value to be displayed is not fetched greedily. | |
5d51a2db MR |
905 | Instead, to avoid the possibility of a fetched value not |
906 | being used, its retrieval is delayed until the print code | |
c5aa993b JM |
907 | uses it. When examining an instruction stream, the |
908 | disassembler will perform its own memory fetch using just | |
909 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
910 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
911 | is left with the byte sequence from the last complete | |
0df8b418 | 912 | instruction fetched from memory? */ |
00a4c844 | 913 | last_examine_value = value_at_lazy (val_type, next_address); |
c906108c SS |
914 | |
915 | if (last_examine_value) | |
916 | release_value (last_examine_value); | |
917 | ||
79a45b7d | 918 | print_formatted (last_examine_value, size, &opts, gdb_stdout); |
a4642986 MR |
919 | |
920 | /* Display any branch delay slots following the final insn. */ | |
921 | if (format == 'i' && count == 1) | |
922 | count += branch_delay_insns; | |
c906108c SS |
923 | } |
924 | printf_filtered ("\n"); | |
925 | gdb_flush (gdb_stdout); | |
926 | } | |
927 | } | |
928 | \f | |
929 | static void | |
fba45db2 | 930 | validate_format (struct format_data fmt, char *cmdname) |
c906108c SS |
931 | { |
932 | if (fmt.size != 0) | |
8a3fe4f8 | 933 | error (_("Size letters are meaningless in \"%s\" command."), cmdname); |
c906108c | 934 | if (fmt.count != 1) |
8a3fe4f8 | 935 | error (_("Item count other than 1 is meaningless in \"%s\" command."), |
c906108c | 936 | cmdname); |
ea37ba09 | 937 | if (fmt.format == 'i') |
8a3fe4f8 | 938 | error (_("Format letter \"%c\" is meaningless in \"%s\" command."), |
c906108c SS |
939 | fmt.format, cmdname); |
940 | } | |
941 | ||
675dcf4f | 942 | /* Evaluate string EXP as an expression in the current language and |
c5aa993b | 943 | print the resulting value. EXP may contain a format specifier as the |
675dcf4f | 944 | first argument ("/x myvar" for example, to print myvar in hex). */ |
c906108c SS |
945 | |
946 | static void | |
6f937416 | 947 | print_command_1 (const char *exp, int voidprint) |
c906108c SS |
948 | { |
949 | struct expression *expr; | |
27833de7 | 950 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
52f0bd74 | 951 | char format = 0; |
3d6d86c6 | 952 | struct value *val; |
c906108c | 953 | struct format_data fmt; |
c906108c | 954 | |
c906108c SS |
955 | if (exp && *exp == '/') |
956 | { | |
957 | exp++; | |
958 | fmt = decode_format (&exp, last_format, 0); | |
959 | validate_format (fmt, "print"); | |
960 | last_format = format = fmt.format; | |
961 | } | |
962 | else | |
963 | { | |
964 | fmt.count = 1; | |
965 | fmt.format = 0; | |
966 | fmt.size = 0; | |
a6bac58e | 967 | fmt.raw = 0; |
c906108c SS |
968 | } |
969 | ||
970 | if (exp && *exp) | |
971 | { | |
c906108c | 972 | expr = parse_expression (exp); |
27833de7 | 973 | make_cleanup (free_current_contents, &expr); |
c906108c | 974 | val = evaluate_expression (expr); |
c906108c SS |
975 | } |
976 | else | |
977 | val = access_value_history (0); | |
978 | ||
df407dfe AC |
979 | if (voidprint || (val && value_type (val) && |
980 | TYPE_CODE (value_type (val)) != TYPE_CODE_VOID)) | |
c906108c | 981 | { |
79a45b7d | 982 | struct value_print_options opts; |
c906108c SS |
983 | int histindex = record_latest_value (val); |
984 | ||
985 | if (histindex >= 0) | |
df407dfe | 986 | annotate_value_history_begin (histindex, value_type (val)); |
c906108c | 987 | else |
df407dfe | 988 | annotate_value_begin (value_type (val)); |
c906108c | 989 | |
e93a8774 | 990 | if (histindex >= 0) |
c5aa993b | 991 | printf_filtered ("$%d = ", histindex); |
c906108c SS |
992 | |
993 | if (histindex >= 0) | |
994 | annotate_value_history_value (); | |
995 | ||
79a45b7d | 996 | get_formatted_print_options (&opts, format); |
a6bac58e | 997 | opts.raw = fmt.raw; |
79a45b7d TT |
998 | |
999 | print_formatted (val, fmt.size, &opts, gdb_stdout); | |
c906108c SS |
1000 | printf_filtered ("\n"); |
1001 | ||
1002 | if (histindex >= 0) | |
1003 | annotate_value_history_end (); | |
1004 | else | |
1005 | annotate_value_end (); | |
c906108c SS |
1006 | } |
1007 | ||
27833de7 | 1008 | do_cleanups (old_chain); |
c906108c SS |
1009 | } |
1010 | ||
c906108c | 1011 | static void |
fba45db2 | 1012 | print_command (char *exp, int from_tty) |
c906108c | 1013 | { |
e93a8774 | 1014 | print_command_1 (exp, 1); |
c906108c SS |
1015 | } |
1016 | ||
675dcf4f | 1017 | /* Same as print, except it doesn't print void results. */ |
c906108c | 1018 | static void |
fba45db2 | 1019 | call_command (char *exp, int from_tty) |
c906108c | 1020 | { |
e93a8774 | 1021 | print_command_1 (exp, 0); |
c906108c SS |
1022 | } |
1023 | ||
6f937416 PA |
1024 | /* Implementation of the "output" command. */ |
1025 | ||
1026 | static void | |
fba45db2 | 1027 | output_command (char *exp, int from_tty) |
6f937416 PA |
1028 | { |
1029 | output_command_const (exp, from_tty); | |
1030 | } | |
1031 | ||
1032 | /* Like output_command, but takes a const string as argument. */ | |
1033 | ||
1034 | void | |
1035 | output_command_const (const char *exp, int from_tty) | |
c906108c SS |
1036 | { |
1037 | struct expression *expr; | |
52f0bd74 AC |
1038 | struct cleanup *old_chain; |
1039 | char format = 0; | |
3d6d86c6 | 1040 | struct value *val; |
c906108c | 1041 | struct format_data fmt; |
79a45b7d | 1042 | struct value_print_options opts; |
c906108c | 1043 | |
777ea8f1 | 1044 | fmt.size = 0; |
a6bac58e | 1045 | fmt.raw = 0; |
777ea8f1 | 1046 | |
c906108c SS |
1047 | if (exp && *exp == '/') |
1048 | { | |
1049 | exp++; | |
1050 | fmt = decode_format (&exp, 0, 0); | |
1051 | validate_format (fmt, "output"); | |
1052 | format = fmt.format; | |
1053 | } | |
1054 | ||
1055 | expr = parse_expression (exp); | |
c13c43fd | 1056 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
1057 | |
1058 | val = evaluate_expression (expr); | |
1059 | ||
df407dfe | 1060 | annotate_value_begin (value_type (val)); |
c906108c | 1061 | |
79a45b7d | 1062 | get_formatted_print_options (&opts, format); |
a6bac58e | 1063 | opts.raw = fmt.raw; |
79a45b7d | 1064 | print_formatted (val, fmt.size, &opts, gdb_stdout); |
c906108c SS |
1065 | |
1066 | annotate_value_end (); | |
1067 | ||
2acceee2 JM |
1068 | wrap_here (""); |
1069 | gdb_flush (gdb_stdout); | |
1070 | ||
c906108c SS |
1071 | do_cleanups (old_chain); |
1072 | } | |
1073 | ||
c906108c | 1074 | static void |
fba45db2 | 1075 | set_command (char *exp, int from_tty) |
c906108c SS |
1076 | { |
1077 | struct expression *expr = parse_expression (exp); | |
52f0bd74 | 1078 | struct cleanup *old_chain = |
c13c43fd | 1079 | make_cleanup (free_current_contents, &expr); |
ad3bbd48 | 1080 | |
0ece64fd TG |
1081 | if (expr->nelts >= 1) |
1082 | switch (expr->elts[0].opcode) | |
1083 | { | |
1084 | case UNOP_PREINCREMENT: | |
1085 | case UNOP_POSTINCREMENT: | |
1086 | case UNOP_PREDECREMENT: | |
1087 | case UNOP_POSTDECREMENT: | |
1088 | case BINOP_ASSIGN: | |
1089 | case BINOP_ASSIGN_MODIFY: | |
1090 | case BINOP_COMMA: | |
1091 | break; | |
1092 | default: | |
1093 | warning | |
1094 | (_("Expression is not an assignment (and might have no effect)")); | |
1095 | } | |
52b3699b | 1096 | |
c906108c SS |
1097 | evaluate_expression (expr); |
1098 | do_cleanups (old_chain); | |
1099 | } | |
1100 | ||
c906108c | 1101 | static void |
fba45db2 | 1102 | sym_info (char *arg, int from_tty) |
c906108c SS |
1103 | { |
1104 | struct minimal_symbol *msymbol; | |
c5aa993b JM |
1105 | struct objfile *objfile; |
1106 | struct obj_section *osect; | |
c5aa993b JM |
1107 | CORE_ADDR addr, sect_addr; |
1108 | int matches = 0; | |
1109 | unsigned int offset; | |
c906108c SS |
1110 | |
1111 | if (!arg) | |
e2e0b3e5 | 1112 | error_no_arg (_("address")); |
c906108c SS |
1113 | |
1114 | addr = parse_and_eval_address (arg); | |
1115 | ALL_OBJSECTIONS (objfile, osect) | |
c5aa993b | 1116 | { |
94277a38 DJ |
1117 | /* Only process each object file once, even if there's a separate |
1118 | debug file. */ | |
1119 | if (objfile->separate_debug_objfile_backlink) | |
1120 | continue; | |
1121 | ||
714835d5 | 1122 | sect_addr = overlay_mapped_address (addr, osect); |
c906108c | 1123 | |
f1f6aadf PA |
1124 | if (obj_section_addr (osect) <= sect_addr |
1125 | && sect_addr < obj_section_endaddr (osect) | |
7cbd4a93 TT |
1126 | && (msymbol |
1127 | = lookup_minimal_symbol_by_pc_section (sect_addr, osect).minsym)) | |
c5aa993b | 1128 | { |
c14c28ba | 1129 | const char *obj_name, *mapped, *sec_name, *msym_name; |
e2fd701e DE |
1130 | char *loc_string; |
1131 | struct cleanup *old_chain; | |
c14c28ba | 1132 | |
c5aa993b JM |
1133 | matches = 1; |
1134 | offset = sect_addr - SYMBOL_VALUE_ADDRESS (msymbol); | |
c14c28ba PP |
1135 | mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped"); |
1136 | sec_name = osect->the_bfd_section->name; | |
1137 | msym_name = SYMBOL_PRINT_NAME (msymbol); | |
1138 | ||
e2fd701e DE |
1139 | /* Don't print the offset if it is zero. |
1140 | We assume there's no need to handle i18n of "sym + offset". */ | |
1141 | if (offset) | |
549ba0f8 | 1142 | loc_string = xstrprintf ("%s + %u", msym_name, offset); |
e2fd701e | 1143 | else |
549ba0f8 | 1144 | loc_string = xstrprintf ("%s", msym_name); |
e2fd701e DE |
1145 | |
1146 | /* Use a cleanup to free loc_string in case the user quits | |
1147 | a pagination request inside printf_filtered. */ | |
1148 | old_chain = make_cleanup (xfree, loc_string); | |
1149 | ||
c14c28ba PP |
1150 | gdb_assert (osect->objfile && osect->objfile->name); |
1151 | obj_name = osect->objfile->name; | |
1152 | ||
1153 | if (MULTI_OBJFILE_P ()) | |
1154 | if (pc_in_unmapped_range (addr, osect)) | |
1155 | if (section_is_overlay (osect)) | |
e2fd701e | 1156 | printf_filtered (_("%s in load address range of " |
c14c28ba | 1157 | "%s overlay section %s of %s\n"), |
e2fd701e | 1158 | loc_string, mapped, sec_name, obj_name); |
c14c28ba | 1159 | else |
e2fd701e | 1160 | printf_filtered (_("%s in load address range of " |
c14c28ba | 1161 | "section %s of %s\n"), |
e2fd701e | 1162 | loc_string, sec_name, obj_name); |
c14c28ba PP |
1163 | else |
1164 | if (section_is_overlay (osect)) | |
e2fd701e DE |
1165 | printf_filtered (_("%s in %s overlay section %s of %s\n"), |
1166 | loc_string, mapped, sec_name, obj_name); | |
c14c28ba | 1167 | else |
e2fd701e DE |
1168 | printf_filtered (_("%s in section %s of %s\n"), |
1169 | loc_string, sec_name, obj_name); | |
c5aa993b | 1170 | else |
c14c28ba PP |
1171 | if (pc_in_unmapped_range (addr, osect)) |
1172 | if (section_is_overlay (osect)) | |
e2fd701e | 1173 | printf_filtered (_("%s in load address range of %s overlay " |
c14c28ba | 1174 | "section %s\n"), |
e2fd701e | 1175 | loc_string, mapped, sec_name); |
c14c28ba | 1176 | else |
e2fd701e DE |
1177 | printf_filtered (_("%s in load address range of section %s\n"), |
1178 | loc_string, sec_name); | |
c14c28ba PP |
1179 | else |
1180 | if (section_is_overlay (osect)) | |
e2fd701e DE |
1181 | printf_filtered (_("%s in %s overlay section %s\n"), |
1182 | loc_string, mapped, sec_name); | |
c14c28ba | 1183 | else |
e2fd701e DE |
1184 | printf_filtered (_("%s in section %s\n"), |
1185 | loc_string, sec_name); | |
1186 | ||
1187 | do_cleanups (old_chain); | |
c5aa993b JM |
1188 | } |
1189 | } | |
c906108c | 1190 | if (matches == 0) |
a3f17187 | 1191 | printf_filtered (_("No symbol matches %s.\n"), arg); |
c906108c SS |
1192 | } |
1193 | ||
c906108c | 1194 | static void |
fba45db2 | 1195 | address_info (char *exp, int from_tty) |
c906108c | 1196 | { |
768a979c UW |
1197 | struct gdbarch *gdbarch; |
1198 | int regno; | |
52f0bd74 AC |
1199 | struct symbol *sym; |
1200 | struct minimal_symbol *msymbol; | |
1201 | long val; | |
714835d5 | 1202 | struct obj_section *section; |
08922a10 | 1203 | CORE_ADDR load_addr, context_pc = 0; |
1993b719 | 1204 | struct field_of_this_result is_a_field_of_this; |
c906108c SS |
1205 | |
1206 | if (exp == 0) | |
8a3fe4f8 | 1207 | error (_("Argument required.")); |
c906108c | 1208 | |
08922a10 | 1209 | sym = lookup_symbol (exp, get_selected_block (&context_pc), VAR_DOMAIN, |
2570f2b7 | 1210 | &is_a_field_of_this); |
c906108c SS |
1211 | if (sym == NULL) |
1212 | { | |
1993b719 | 1213 | if (is_a_field_of_this.type != NULL) |
c906108c SS |
1214 | { |
1215 | printf_filtered ("Symbol \""); | |
1216 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1217 | current_language->la_language, DMGL_ANSI); | |
e2b23ee9 AF |
1218 | printf_filtered ("\" is a field of the local class variable "); |
1219 | if (current_language->la_language == language_objc) | |
2625d86c | 1220 | printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */ |
e2b23ee9 | 1221 | else |
2625d86c | 1222 | printf_filtered ("`this'\n"); |
c906108c SS |
1223 | return; |
1224 | } | |
1225 | ||
1226 | msymbol = lookup_minimal_symbol (exp, NULL, NULL); | |
1227 | ||
1228 | if (msymbol != NULL) | |
1229 | { | |
e27d198c TT |
1230 | struct objfile *objfile = msymbol_objfile (msymbol); |
1231 | ||
1232 | gdbarch = get_objfile_arch (objfile); | |
c906108c SS |
1233 | load_addr = SYMBOL_VALUE_ADDRESS (msymbol); |
1234 | ||
1235 | printf_filtered ("Symbol \""); | |
1236 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1237 | current_language->la_language, DMGL_ANSI); | |
1238 | printf_filtered ("\" is at "); | |
5af949e3 | 1239 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
c906108c | 1240 | printf_filtered (" in a file compiled without debugging"); |
e27d198c | 1241 | section = SYMBOL_OBJ_SECTION (objfile, msymbol); |
c906108c SS |
1242 | if (section_is_overlay (section)) |
1243 | { | |
1244 | load_addr = overlay_unmapped_address (load_addr, section); | |
1245 | printf_filtered (",\n -- loaded at "); | |
5af949e3 | 1246 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1247 | printf_filtered (" in overlay section %s", |
1248 | section->the_bfd_section->name); | |
c906108c SS |
1249 | } |
1250 | printf_filtered (".\n"); | |
1251 | } | |
1252 | else | |
8a3fe4f8 | 1253 | error (_("No symbol \"%s\" in current context."), exp); |
c906108c SS |
1254 | return; |
1255 | } | |
1256 | ||
1257 | printf_filtered ("Symbol \""); | |
3567439c | 1258 | fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym), |
c906108c SS |
1259 | current_language->la_language, DMGL_ANSI); |
1260 | printf_filtered ("\" is "); | |
c5aa993b | 1261 | val = SYMBOL_VALUE (sym); |
e27d198c | 1262 | section = SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym), sym); |
768a979c | 1263 | gdbarch = get_objfile_arch (SYMBOL_SYMTAB (sym)->objfile); |
c906108c | 1264 | |
24d6c2a0 TT |
1265 | if (SYMBOL_COMPUTED_OPS (sym) != NULL) |
1266 | { | |
1267 | SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, context_pc, | |
1268 | gdb_stdout); | |
1269 | printf_filtered (".\n"); | |
1270 | return; | |
1271 | } | |
1272 | ||
c906108c SS |
1273 | switch (SYMBOL_CLASS (sym)) |
1274 | { | |
1275 | case LOC_CONST: | |
1276 | case LOC_CONST_BYTES: | |
1277 | printf_filtered ("constant"); | |
1278 | break; | |
1279 | ||
1280 | case LOC_LABEL: | |
1281 | printf_filtered ("a label at address "); | |
5af949e3 UW |
1282 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
1283 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); | |
c906108c SS |
1284 | if (section_is_overlay (section)) |
1285 | { | |
1286 | load_addr = overlay_unmapped_address (load_addr, section); | |
1287 | printf_filtered (",\n -- loaded at "); | |
5af949e3 | 1288 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1289 | printf_filtered (" in overlay section %s", |
1290 | section->the_bfd_section->name); | |
c906108c SS |
1291 | } |
1292 | break; | |
1293 | ||
4c2df51b | 1294 | case LOC_COMPUTED: |
24d6c2a0 | 1295 | gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method")); |
4c2df51b | 1296 | |
c906108c | 1297 | case LOC_REGISTER: |
768a979c UW |
1298 | /* GDBARCH is the architecture associated with the objfile the symbol |
1299 | is defined in; the target architecture may be different, and may | |
1300 | provide additional registers. However, we do not know the target | |
1301 | architecture at this point. We assume the objfile architecture | |
1302 | will contain all the standard registers that occur in debug info | |
1303 | in that objfile. */ | |
1304 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
1305 | ||
2a2d4dc3 AS |
1306 | if (SYMBOL_IS_ARGUMENT (sym)) |
1307 | printf_filtered (_("an argument in register %s"), | |
768a979c | 1308 | gdbarch_register_name (gdbarch, regno)); |
2a2d4dc3 AS |
1309 | else |
1310 | printf_filtered (_("a variable in register %s"), | |
768a979c | 1311 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1312 | break; |
1313 | ||
1314 | case LOC_STATIC: | |
a3f17187 | 1315 | printf_filtered (_("static storage at address ")); |
5af949e3 UW |
1316 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
1317 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); | |
c906108c SS |
1318 | if (section_is_overlay (section)) |
1319 | { | |
1320 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1321 | printf_filtered (_(",\n -- loaded at ")); |
5af949e3 | 1322 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1323 | printf_filtered (_(" in overlay section %s"), |
1324 | section->the_bfd_section->name); | |
c906108c SS |
1325 | } |
1326 | break; | |
1327 | ||
c906108c | 1328 | case LOC_REGPARM_ADDR: |
768a979c UW |
1329 | /* Note comment at LOC_REGISTER. */ |
1330 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
675dcf4f | 1331 | printf_filtered (_("address of an argument in register %s"), |
768a979c | 1332 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1333 | break; |
1334 | ||
1335 | case LOC_ARG: | |
a3f17187 | 1336 | printf_filtered (_("an argument at offset %ld"), val); |
c906108c SS |
1337 | break; |
1338 | ||
c906108c | 1339 | case LOC_LOCAL: |
a3f17187 | 1340 | printf_filtered (_("a local variable at frame offset %ld"), val); |
c906108c SS |
1341 | break; |
1342 | ||
1343 | case LOC_REF_ARG: | |
a3f17187 | 1344 | printf_filtered (_("a reference argument at offset %ld"), val); |
c906108c SS |
1345 | break; |
1346 | ||
c906108c | 1347 | case LOC_TYPEDEF: |
a3f17187 | 1348 | printf_filtered (_("a typedef")); |
c906108c SS |
1349 | break; |
1350 | ||
1351 | case LOC_BLOCK: | |
a3f17187 | 1352 | printf_filtered (_("a function at address ")); |
675dcf4f | 1353 | load_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); |
5af949e3 | 1354 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
c906108c SS |
1355 | if (section_is_overlay (section)) |
1356 | { | |
1357 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1358 | printf_filtered (_(",\n -- loaded at ")); |
5af949e3 | 1359 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1360 | printf_filtered (_(" in overlay section %s"), |
1361 | section->the_bfd_section->name); | |
c906108c SS |
1362 | } |
1363 | break; | |
1364 | ||
1365 | case LOC_UNRESOLVED: | |
1366 | { | |
e27d198c | 1367 | struct bound_minimal_symbol msym; |
c906108c | 1368 | |
e27d198c TT |
1369 | msym = lookup_minimal_symbol_and_objfile (SYMBOL_LINKAGE_NAME (sym)); |
1370 | if (msym.minsym == NULL) | |
c906108c SS |
1371 | printf_filtered ("unresolved"); |
1372 | else | |
1373 | { | |
e27d198c TT |
1374 | section = SYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
1375 | load_addr = SYMBOL_VALUE_ADDRESS (msym.minsym); | |
e0740f77 JK |
1376 | |
1377 | if (section | |
1378 | && (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0) | |
1379 | printf_filtered (_("a thread-local variable at offset %s " | |
1380 | "in the thread-local storage for `%s'"), | |
5af949e3 UW |
1381 | paddress (gdbarch, load_addr), |
1382 | section->objfile->name); | |
e0740f77 | 1383 | else |
c906108c | 1384 | { |
e0740f77 | 1385 | printf_filtered (_("static storage at address ")); |
5af949e3 | 1386 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
e0740f77 JK |
1387 | if (section_is_overlay (section)) |
1388 | { | |
1389 | load_addr = overlay_unmapped_address (load_addr, section); | |
1390 | printf_filtered (_(",\n -- loaded at ")); | |
5af949e3 | 1391 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
e0740f77 JK |
1392 | printf_filtered (_(" in overlay section %s"), |
1393 | section->the_bfd_section->name); | |
1394 | } | |
c906108c SS |
1395 | } |
1396 | } | |
1397 | } | |
1398 | break; | |
1399 | ||
c906108c | 1400 | case LOC_OPTIMIZED_OUT: |
a3f17187 | 1401 | printf_filtered (_("optimized out")); |
c906108c | 1402 | break; |
c5aa993b | 1403 | |
c906108c | 1404 | default: |
a3f17187 | 1405 | printf_filtered (_("of unknown (botched) type")); |
c906108c SS |
1406 | break; |
1407 | } | |
1408 | printf_filtered (".\n"); | |
1409 | } | |
1410 | \f | |
675dcf4f MK |
1411 | |
1412 | static void | |
fba45db2 | 1413 | x_command (char *exp, int from_tty) |
c906108c SS |
1414 | { |
1415 | struct expression *expr; | |
1416 | struct format_data fmt; | |
1417 | struct cleanup *old_chain; | |
1418 | struct value *val; | |
1419 | ||
a6bac58e | 1420 | fmt.format = last_format ? last_format : 'x'; |
c906108c SS |
1421 | fmt.size = last_size; |
1422 | fmt.count = 1; | |
a6bac58e | 1423 | fmt.raw = 0; |
c906108c SS |
1424 | |
1425 | if (exp && *exp == '/') | |
1426 | { | |
6f937416 PA |
1427 | const char *tmp = exp + 1; |
1428 | ||
1429 | fmt = decode_format (&tmp, last_format, last_size); | |
1430 | exp = (char *) tmp; | |
c906108c SS |
1431 | } |
1432 | ||
1433 | /* If we have an expression, evaluate it and use it as the address. */ | |
1434 | ||
1435 | if (exp != 0 && *exp != 0) | |
1436 | { | |
1437 | expr = parse_expression (exp); | |
675dcf4f MK |
1438 | /* Cause expression not to be there any more if this command is |
1439 | repeated with Newline. But don't clobber a user-defined | |
1440 | command's definition. */ | |
c906108c SS |
1441 | if (from_tty) |
1442 | *exp = 0; | |
c13c43fd | 1443 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c | 1444 | val = evaluate_expression (expr); |
df407dfe | 1445 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_REF) |
e1c34c5d | 1446 | val = coerce_ref (val); |
c906108c | 1447 | /* In rvalue contexts, such as this, functions are coerced into |
c5aa993b | 1448 | pointers to functions. This makes "x/i main" work. */ |
c0d8fd9a | 1449 | if (/* last_format == 'i' && */ |
df407dfe | 1450 | TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC |
c5aa993b | 1451 | && VALUE_LVAL (val) == lval_memory) |
42ae5230 | 1452 | next_address = value_address (val); |
c906108c | 1453 | else |
1aa20aa8 | 1454 | next_address = value_as_address (val); |
5d3729b5 UW |
1455 | |
1456 | next_gdbarch = expr->gdbarch; | |
c906108c SS |
1457 | do_cleanups (old_chain); |
1458 | } | |
1459 | ||
5d3729b5 UW |
1460 | if (!next_gdbarch) |
1461 | error_no_arg (_("starting display address")); | |
1462 | ||
1463 | do_examine (fmt, next_gdbarch, next_address); | |
c906108c | 1464 | |
675dcf4f | 1465 | /* If the examine succeeds, we remember its size and format for next |
9a22f0d0 PM |
1466 | time. Set last_size to 'b' for strings. */ |
1467 | if (fmt.format == 's') | |
1468 | last_size = 'b'; | |
1469 | else | |
1470 | last_size = fmt.size; | |
c906108c SS |
1471 | last_format = fmt.format; |
1472 | ||
0df8b418 | 1473 | /* Set a couple of internal variables if appropriate. */ |
c906108c SS |
1474 | if (last_examine_value) |
1475 | { | |
1476 | /* Make last address examined available to the user as $_. Use | |
c5aa993b | 1477 | the correct pointer type. */ |
4478b372 | 1478 | struct type *pointer_type |
df407dfe | 1479 | = lookup_pointer_type (value_type (last_examine_value)); |
c906108c | 1480 | set_internalvar (lookup_internalvar ("_"), |
4478b372 JB |
1481 | value_from_pointer (pointer_type, |
1482 | last_examine_address)); | |
c5aa993b | 1483 | |
675dcf4f MK |
1484 | /* Make contents of last address examined available to the user |
1485 | as $__. If the last value has not been fetched from memory | |
1486 | then don't fetch it now; instead mark it by voiding the $__ | |
1487 | variable. */ | |
d69fe07e | 1488 | if (value_lazy (last_examine_value)) |
4fa62494 | 1489 | clear_internalvar (lookup_internalvar ("__")); |
c906108c SS |
1490 | else |
1491 | set_internalvar (lookup_internalvar ("__"), last_examine_value); | |
1492 | } | |
1493 | } | |
c906108c | 1494 | \f |
c5aa993b | 1495 | |
c906108c SS |
1496 | /* Add an expression to the auto-display chain. |
1497 | Specify the expression. */ | |
1498 | ||
1499 | static void | |
6f937416 | 1500 | display_command (char *arg, int from_tty) |
c906108c SS |
1501 | { |
1502 | struct format_data fmt; | |
52f0bd74 AC |
1503 | struct expression *expr; |
1504 | struct display *new; | |
c906108c | 1505 | int display_it = 1; |
6f937416 | 1506 | const char *exp = arg; |
c906108c SS |
1507 | |
1508 | #if defined(TUI) | |
021e7609 AC |
1509 | /* NOTE: cagney/2003-02-13 The `tui_active' was previously |
1510 | `tui_version'. */ | |
fd33e6cb | 1511 | if (tui_active && exp != NULL && *exp == '$') |
080ce8c0 | 1512 | display_it = (tui_set_layout_for_display_command (exp) == TUI_FAILURE); |
c906108c SS |
1513 | #endif |
1514 | ||
1515 | if (display_it) | |
1516 | { | |
1517 | if (exp == 0) | |
1518 | { | |
1519 | do_displays (); | |
1520 | return; | |
1521 | } | |
1522 | ||
1523 | if (*exp == '/') | |
1524 | { | |
1525 | exp++; | |
1526 | fmt = decode_format (&exp, 0, 0); | |
1527 | if (fmt.size && fmt.format == 0) | |
1528 | fmt.format = 'x'; | |
1529 | if (fmt.format == 'i' || fmt.format == 's') | |
1530 | fmt.size = 'b'; | |
1531 | } | |
1532 | else | |
1533 | { | |
1534 | fmt.format = 0; | |
1535 | fmt.size = 0; | |
1536 | fmt.count = 0; | |
a6bac58e | 1537 | fmt.raw = 0; |
c906108c SS |
1538 | } |
1539 | ||
a3247a22 | 1540 | innermost_block = NULL; |
c906108c SS |
1541 | expr = parse_expression (exp); |
1542 | ||
1543 | new = (struct display *) xmalloc (sizeof (struct display)); | |
1544 | ||
fa8a61dc | 1545 | new->exp_string = xstrdup (exp); |
c906108c SS |
1546 | new->exp = expr; |
1547 | new->block = innermost_block; | |
6c95b8df | 1548 | new->pspace = current_program_space; |
c906108c SS |
1549 | new->next = display_chain; |
1550 | new->number = ++display_number; | |
1551 | new->format = fmt; | |
b5de0fa7 | 1552 | new->enabled_p = 1; |
c906108c SS |
1553 | display_chain = new; |
1554 | ||
1555 | if (from_tty && target_has_execution) | |
1556 | do_one_display (new); | |
1557 | ||
1558 | dont_repeat (); | |
1559 | } | |
1560 | } | |
1561 | ||
1562 | static void | |
fba45db2 | 1563 | free_display (struct display *d) |
c906108c | 1564 | { |
fa8a61dc | 1565 | xfree (d->exp_string); |
b8c9b27d KB |
1566 | xfree (d->exp); |
1567 | xfree (d); | |
c906108c SS |
1568 | } |
1569 | ||
675dcf4f MK |
1570 | /* Clear out the display_chain. Done when new symtabs are loaded, |
1571 | since this invalidates the types stored in many expressions. */ | |
c906108c SS |
1572 | |
1573 | void | |
fba45db2 | 1574 | clear_displays (void) |
c906108c | 1575 | { |
52f0bd74 | 1576 | struct display *d; |
c906108c SS |
1577 | |
1578 | while ((d = display_chain) != NULL) | |
1579 | { | |
c906108c | 1580 | display_chain = d->next; |
fa8a61dc | 1581 | free_display (d); |
c906108c SS |
1582 | } |
1583 | } | |
1584 | ||
3c3fe74c | 1585 | /* Delete the auto-display DISPLAY. */ |
c906108c SS |
1586 | |
1587 | static void | |
3c3fe74c | 1588 | delete_display (struct display *display) |
c906108c | 1589 | { |
3c3fe74c | 1590 | struct display *d; |
c906108c | 1591 | |
3c3fe74c | 1592 | gdb_assert (display != NULL); |
c906108c | 1593 | |
3c3fe74c PA |
1594 | if (display_chain == display) |
1595 | display_chain = display->next; | |
1596 | ||
1597 | ALL_DISPLAYS (d) | |
1598 | if (d->next == display) | |
c906108c | 1599 | { |
3c3fe74c PA |
1600 | d->next = display->next; |
1601 | break; | |
c906108c | 1602 | } |
3c3fe74c PA |
1603 | |
1604 | free_display (display); | |
c906108c SS |
1605 | } |
1606 | ||
c9174737 PA |
1607 | /* Call FUNCTION on each of the displays whose numbers are given in |
1608 | ARGS. DATA is passed unmodified to FUNCTION. */ | |
c906108c SS |
1609 | |
1610 | static void | |
c9174737 PA |
1611 | map_display_numbers (char *args, |
1612 | void (*function) (struct display *, | |
1613 | void *), | |
1614 | void *data) | |
c906108c | 1615 | { |
197f0a60 | 1616 | struct get_number_or_range_state state; |
c9174737 | 1617 | int num; |
c906108c | 1618 | |
c9174737 PA |
1619 | if (args == NULL) |
1620 | error_no_arg (_("one or more display numbers")); | |
c906108c | 1621 | |
197f0a60 | 1622 | init_number_or_range (&state, args); |
c9174737 | 1623 | |
197f0a60 | 1624 | while (!state.finished) |
c906108c | 1625 | { |
197f0a60 | 1626 | char *p = state.string; |
c906108c | 1627 | |
197f0a60 | 1628 | num = get_number_or_range (&state); |
3c3fe74c PA |
1629 | if (num == 0) |
1630 | warning (_("bad display number at or near '%s'"), p); | |
1631 | else | |
1632 | { | |
c9174737 | 1633 | struct display *d, *tmp; |
c906108c | 1634 | |
c9174737 | 1635 | ALL_DISPLAYS_SAFE (d, tmp) |
3c3fe74c PA |
1636 | if (d->number == num) |
1637 | break; | |
1638 | if (d == NULL) | |
1639 | printf_unfiltered (_("No display number %d.\n"), num); | |
1640 | else | |
c9174737 | 1641 | function (d, data); |
3c3fe74c | 1642 | } |
c906108c | 1643 | } |
c9174737 PA |
1644 | } |
1645 | ||
1646 | /* Callback for map_display_numbers, that deletes a display. */ | |
1647 | ||
1648 | static void | |
1649 | do_delete_display (struct display *d, void *data) | |
1650 | { | |
1651 | delete_display (d); | |
1652 | } | |
1653 | ||
1654 | /* "undisplay" command. */ | |
1655 | ||
1656 | static void | |
1657 | undisplay_command (char *args, int from_tty) | |
1658 | { | |
c9174737 PA |
1659 | if (args == NULL) |
1660 | { | |
1661 | if (query (_("Delete all auto-display expressions? "))) | |
1662 | clear_displays (); | |
1663 | dont_repeat (); | |
1664 | return; | |
1665 | } | |
1666 | ||
1667 | map_display_numbers (args, do_delete_display, NULL); | |
c906108c SS |
1668 | dont_repeat (); |
1669 | } | |
1670 | ||
1671 | /* Display a single auto-display. | |
1672 | Do nothing if the display cannot be printed in the current context, | |
0df8b418 | 1673 | or if the display is disabled. */ |
c906108c SS |
1674 | |
1675 | static void | |
fba45db2 | 1676 | do_one_display (struct display *d) |
c906108c | 1677 | { |
af6e93b2 | 1678 | struct cleanup *old_chain; |
c906108c SS |
1679 | int within_current_scope; |
1680 | ||
b5de0fa7 | 1681 | if (d->enabled_p == 0) |
c906108c SS |
1682 | return; |
1683 | ||
704e9165 UW |
1684 | /* The expression carries the architecture that was used at parse time. |
1685 | This is a problem if the expression depends on architecture features | |
1686 | (e.g. register numbers), and the current architecture is now different. | |
1687 | For example, a display statement like "display/i $pc" is expected to | |
1688 | display the PC register of the current architecture, not the arch at | |
1689 | the time the display command was given. Therefore, we re-parse the | |
1690 | expression if the current architecture has changed. */ | |
1691 | if (d->exp != NULL && d->exp->gdbarch != get_current_arch ()) | |
1692 | { | |
1693 | xfree (d->exp); | |
1694 | d->exp = NULL; | |
1695 | d->block = NULL; | |
1696 | } | |
1697 | ||
a3247a22 PP |
1698 | if (d->exp == NULL) |
1699 | { | |
1700 | volatile struct gdb_exception ex; | |
ad3bbd48 | 1701 | |
a3247a22 PP |
1702 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1703 | { | |
1704 | innermost_block = NULL; | |
1705 | d->exp = parse_expression (d->exp_string); | |
1706 | d->block = innermost_block; | |
1707 | } | |
1708 | if (ex.reason < 0) | |
1709 | { | |
1710 | /* Can't re-parse the expression. Disable this display item. */ | |
1711 | d->enabled_p = 0; | |
1712 | warning (_("Unable to display \"%s\": %s"), | |
1713 | d->exp_string, ex.message); | |
1714 | return; | |
1715 | } | |
1716 | } | |
1717 | ||
c906108c | 1718 | if (d->block) |
6c95b8df PA |
1719 | { |
1720 | if (d->pspace == current_program_space) | |
1721 | within_current_scope = contained_in (get_selected_block (0), d->block); | |
1722 | else | |
1723 | within_current_scope = 0; | |
1724 | } | |
c906108c SS |
1725 | else |
1726 | within_current_scope = 1; | |
1727 | if (!within_current_scope) | |
1728 | return; | |
1729 | ||
9d8fa392 | 1730 | old_chain = make_cleanup_restore_integer (¤t_display_number); |
c906108c SS |
1731 | current_display_number = d->number; |
1732 | ||
1733 | annotate_display_begin (); | |
1734 | printf_filtered ("%d", d->number); | |
1735 | annotate_display_number_end (); | |
1736 | printf_filtered (": "); | |
1737 | if (d->format.size) | |
1738 | { | |
9d8fa392 | 1739 | volatile struct gdb_exception ex; |
c906108c SS |
1740 | |
1741 | annotate_display_format (); | |
1742 | ||
1743 | printf_filtered ("x/"); | |
1744 | if (d->format.count != 1) | |
1745 | printf_filtered ("%d", d->format.count); | |
1746 | printf_filtered ("%c", d->format.format); | |
1747 | if (d->format.format != 'i' && d->format.format != 's') | |
1748 | printf_filtered ("%c", d->format.size); | |
1749 | printf_filtered (" "); | |
1750 | ||
1751 | annotate_display_expression (); | |
1752 | ||
fa8a61dc | 1753 | puts_filtered (d->exp_string); |
c906108c SS |
1754 | annotate_display_expression_end (); |
1755 | ||
6a2eb474 | 1756 | if (d->format.count != 1 || d->format.format == 'i') |
c906108c SS |
1757 | printf_filtered ("\n"); |
1758 | else | |
1759 | printf_filtered (" "); | |
c5aa993b | 1760 | |
c906108c SS |
1761 | annotate_display_value (); |
1762 | ||
9d8fa392 PA |
1763 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
1764 | { | |
1765 | struct value *val; | |
1766 | CORE_ADDR addr; | |
1767 | ||
1768 | val = evaluate_expression (d->exp); | |
1769 | addr = value_as_address (val); | |
1770 | if (d->format.format == 'i') | |
1771 | addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr); | |
1772 | do_examine (d->format, d->exp->gdbarch, addr); | |
1773 | } | |
1774 | if (ex.reason < 0) | |
1775 | fprintf_filtered (gdb_stdout, _("<error: %s>\n"), ex.message); | |
c906108c SS |
1776 | } |
1777 | else | |
1778 | { | |
79a45b7d | 1779 | struct value_print_options opts; |
9d8fa392 | 1780 | volatile struct gdb_exception ex; |
79a45b7d | 1781 | |
c906108c SS |
1782 | annotate_display_format (); |
1783 | ||
1784 | if (d->format.format) | |
1785 | printf_filtered ("/%c ", d->format.format); | |
1786 | ||
1787 | annotate_display_expression (); | |
1788 | ||
fa8a61dc | 1789 | puts_filtered (d->exp_string); |
c906108c SS |
1790 | annotate_display_expression_end (); |
1791 | ||
1792 | printf_filtered (" = "); | |
1793 | ||
1794 | annotate_display_expression (); | |
1795 | ||
79a45b7d | 1796 | get_formatted_print_options (&opts, d->format.format); |
a6bac58e | 1797 | opts.raw = d->format.raw; |
9d8fa392 PA |
1798 | |
1799 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
1800 | { | |
1801 | struct value *val; | |
1802 | ||
1803 | val = evaluate_expression (d->exp); | |
1804 | print_formatted (val, d->format.size, &opts, gdb_stdout); | |
1805 | } | |
1806 | if (ex.reason < 0) | |
1807 | fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.message); | |
c906108c SS |
1808 | printf_filtered ("\n"); |
1809 | } | |
1810 | ||
1811 | annotate_display_end (); | |
1812 | ||
1813 | gdb_flush (gdb_stdout); | |
9d8fa392 | 1814 | do_cleanups (old_chain); |
c906108c SS |
1815 | } |
1816 | ||
1817 | /* Display all of the values on the auto-display chain which can be | |
1818 | evaluated in the current scope. */ | |
1819 | ||
1820 | void | |
fba45db2 | 1821 | do_displays (void) |
c906108c | 1822 | { |
52f0bd74 | 1823 | struct display *d; |
c906108c SS |
1824 | |
1825 | for (d = display_chain; d; d = d->next) | |
1826 | do_one_display (d); | |
1827 | } | |
1828 | ||
1829 | /* Delete the auto-display which we were in the process of displaying. | |
1830 | This is done when there is an error or a signal. */ | |
1831 | ||
1832 | void | |
fba45db2 | 1833 | disable_display (int num) |
c906108c | 1834 | { |
52f0bd74 | 1835 | struct display *d; |
c906108c SS |
1836 | |
1837 | for (d = display_chain; d; d = d->next) | |
1838 | if (d->number == num) | |
1839 | { | |
b5de0fa7 | 1840 | d->enabled_p = 0; |
c906108c SS |
1841 | return; |
1842 | } | |
a3f17187 | 1843 | printf_unfiltered (_("No display number %d.\n"), num); |
c906108c | 1844 | } |
c5aa993b | 1845 | |
c906108c | 1846 | void |
fba45db2 | 1847 | disable_current_display (void) |
c906108c SS |
1848 | { |
1849 | if (current_display_number >= 0) | |
1850 | { | |
1851 | disable_display (current_display_number); | |
3e43a32a MS |
1852 | fprintf_unfiltered (gdb_stderr, |
1853 | _("Disabling display %d to " | |
1854 | "avoid infinite recursion.\n"), | |
c5aa993b | 1855 | current_display_number); |
c906108c SS |
1856 | } |
1857 | current_display_number = -1; | |
1858 | } | |
1859 | ||
1860 | static void | |
fba45db2 | 1861 | display_info (char *ignore, int from_tty) |
c906108c | 1862 | { |
52f0bd74 | 1863 | struct display *d; |
c906108c SS |
1864 | |
1865 | if (!display_chain) | |
a3f17187 | 1866 | printf_unfiltered (_("There are no auto-display expressions now.\n")); |
c906108c | 1867 | else |
a3f17187 AC |
1868 | printf_filtered (_("Auto-display expressions now in effect:\n\ |
1869 | Num Enb Expression\n")); | |
c906108c SS |
1870 | |
1871 | for (d = display_chain; d; d = d->next) | |
1872 | { | |
b5de0fa7 | 1873 | printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]); |
c906108c SS |
1874 | if (d->format.size) |
1875 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
c5aa993b | 1876 | d->format.format); |
c906108c SS |
1877 | else if (d->format.format) |
1878 | printf_filtered ("/%c ", d->format.format); | |
fa8a61dc | 1879 | puts_filtered (d->exp_string); |
ae767bfb | 1880 | if (d->block && !contained_in (get_selected_block (0), d->block)) |
a3f17187 | 1881 | printf_filtered (_(" (cannot be evaluated in the current context)")); |
c906108c SS |
1882 | printf_filtered ("\n"); |
1883 | gdb_flush (gdb_stdout); | |
1884 | } | |
1885 | } | |
1886 | ||
c9174737 PA |
1887 | /* Callback fo map_display_numbers, that enables or disables the |
1888 | passed in display D. */ | |
1889 | ||
c906108c | 1890 | static void |
c9174737 | 1891 | do_enable_disable_display (struct display *d, void *data) |
c906108c | 1892 | { |
c9174737 PA |
1893 | d->enabled_p = *(int *) data; |
1894 | } | |
c906108c | 1895 | |
c9174737 PA |
1896 | /* Implamentation of both the "disable display" and "enable display" |
1897 | commands. ENABLE decides what to do. */ | |
1898 | ||
1899 | static void | |
1900 | enable_disable_display_command (char *args, int from_tty, int enable) | |
1901 | { | |
1902 | if (args == NULL) | |
c906108c | 1903 | { |
c9174737 | 1904 | struct display *d; |
c5aa993b | 1905 | |
c9174737 PA |
1906 | ALL_DISPLAYS (d) |
1907 | d->enabled_p = enable; | |
1908 | return; | |
1909 | } | |
c5aa993b | 1910 | |
c9174737 | 1911 | map_display_numbers (args, do_enable_disable_display, &enable); |
c906108c SS |
1912 | } |
1913 | ||
c9174737 PA |
1914 | /* The "enable display" command. */ |
1915 | ||
c906108c | 1916 | static void |
c9174737 | 1917 | enable_display_command (char *args, int from_tty) |
c906108c | 1918 | { |
c9174737 PA |
1919 | enable_disable_display_command (args, from_tty, 1); |
1920 | } | |
c5aa993b | 1921 | |
c9174737 | 1922 | /* The "disable display" command. */ |
c906108c | 1923 | |
c9174737 PA |
1924 | static void |
1925 | disable_display_command (char *args, int from_tty) | |
1926 | { | |
1927 | enable_disable_display_command (args, from_tty, 0); | |
c906108c | 1928 | } |
a3247a22 | 1929 | |
a3247a22 PP |
1930 | /* display_chain items point to blocks and expressions. Some expressions in |
1931 | turn may point to symbols. | |
1932 | Both symbols and blocks are obstack_alloc'd on objfile_stack, and are | |
1933 | obstack_free'd when a shared library is unloaded. | |
1934 | Clear pointers that are about to become dangling. | |
1935 | Both .exp and .block fields will be restored next time we need to display | |
1936 | an item by re-parsing .exp_string field in the new execution context. */ | |
1937 | ||
1938 | static void | |
1939 | clear_dangling_display_expressions (struct so_list *solib) | |
1940 | { | |
c0201579 | 1941 | struct objfile *objfile = solib->objfile; |
a3247a22 | 1942 | struct display *d; |
a3247a22 | 1943 | |
c0201579 JK |
1944 | /* With no symbol file we cannot have a block or expression from it. */ |
1945 | if (objfile == NULL) | |
1946 | return; | |
1947 | if (objfile->separate_debug_objfile_backlink) | |
1948 | objfile = objfile->separate_debug_objfile_backlink; | |
1949 | gdb_assert (objfile->pspace == solib->pspace); | |
1950 | ||
1951 | for (d = display_chain; d != NULL; d = d->next) | |
a3247a22 | 1952 | { |
c0201579 JK |
1953 | if (d->pspace != solib->pspace) |
1954 | continue; | |
1955 | ||
1956 | if (lookup_objfile_from_block (d->block) == objfile | |
1957 | || (d->exp && exp_uses_objfile (d->exp, objfile))) | |
1958 | { | |
1959 | xfree (d->exp); | |
1960 | d->exp = NULL; | |
1961 | d->block = NULL; | |
1962 | } | |
a3247a22 PP |
1963 | } |
1964 | } | |
c906108c | 1965 | \f |
c5aa993b | 1966 | |
675dcf4f | 1967 | /* Print the value in stack frame FRAME of a variable specified by a |
aad95b57 TT |
1968 | struct symbol. NAME is the name to print; if NULL then VAR's print |
1969 | name will be used. STREAM is the ui_file on which to print the | |
1970 | value. INDENT specifies the number of indent levels to print | |
8f043999 JK |
1971 | before printing the variable name. |
1972 | ||
1973 | This function invalidates FRAME. */ | |
c906108c SS |
1974 | |
1975 | void | |
aad95b57 TT |
1976 | print_variable_and_value (const char *name, struct symbol *var, |
1977 | struct frame_info *frame, | |
1978 | struct ui_file *stream, int indent) | |
c906108c | 1979 | { |
0f6a939d | 1980 | volatile struct gdb_exception except; |
c906108c | 1981 | |
aad95b57 TT |
1982 | if (!name) |
1983 | name = SYMBOL_PRINT_NAME (var); | |
1984 | ||
1985 | fprintf_filtered (stream, "%s%s = ", n_spaces (2 * indent), name); | |
0f6a939d PM |
1986 | TRY_CATCH (except, RETURN_MASK_ERROR) |
1987 | { | |
1988 | struct value *val; | |
1989 | struct value_print_options opts; | |
aad95b57 | 1990 | |
0f6a939d PM |
1991 | val = read_var_value (var, frame); |
1992 | get_user_print_options (&opts); | |
3343315b | 1993 | opts.deref_ref = 1; |
0f6a939d | 1994 | common_val_print (val, stream, indent, &opts, current_language); |
8f043999 JK |
1995 | |
1996 | /* common_val_print invalidates FRAME when a pretty printer calls inferior | |
1997 | function. */ | |
1998 | frame = NULL; | |
0f6a939d PM |
1999 | } |
2000 | if (except.reason < 0) | |
2001 | fprintf_filtered(stream, "<error reading variable %s (%s)>", name, | |
2002 | except.message); | |
aad95b57 | 2003 | fprintf_filtered (stream, "\n"); |
c906108c SS |
2004 | } |
2005 | ||
c2792f5a DE |
2006 | /* Subroutine of ui_printf to simplify it. |
2007 | Print VALUE to STREAM using FORMAT. | |
e12f57ab | 2008 | VALUE is a C-style string on the target. */ |
c2792f5a DE |
2009 | |
2010 | static void | |
2011 | printf_c_string (struct ui_file *stream, const char *format, | |
2012 | struct value *value) | |
2013 | { | |
2014 | gdb_byte *str; | |
2015 | CORE_ADDR tem; | |
2016 | int j; | |
2017 | ||
2018 | tem = value_as_address (value); | |
2019 | ||
2020 | /* This is a %s argument. Find the length of the string. */ | |
2021 | for (j = 0;; j++) | |
2022 | { | |
2023 | gdb_byte c; | |
2024 | ||
2025 | QUIT; | |
2026 | read_memory (tem + j, &c, 1); | |
2027 | if (c == 0) | |
2028 | break; | |
2029 | } | |
2030 | ||
2031 | /* Copy the string contents into a string inside GDB. */ | |
2032 | str = (gdb_byte *) alloca (j + 1); | |
2033 | if (j != 0) | |
2034 | read_memory (tem, str, j); | |
2035 | str[j] = 0; | |
2036 | ||
2037 | fprintf_filtered (stream, format, (char *) str); | |
2038 | } | |
2039 | ||
2040 | /* Subroutine of ui_printf to simplify it. | |
2041 | Print VALUE to STREAM using FORMAT. | |
e12f57ab | 2042 | VALUE is a wide C-style string on the target. */ |
c2792f5a DE |
2043 | |
2044 | static void | |
2045 | printf_wide_c_string (struct ui_file *stream, const char *format, | |
2046 | struct value *value) | |
2047 | { | |
2048 | gdb_byte *str; | |
2049 | CORE_ADDR tem; | |
2050 | int j; | |
2051 | struct gdbarch *gdbarch = get_type_arch (value_type (value)); | |
2052 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
2053 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
2054 | "wchar_t", NULL, 0); | |
2055 | int wcwidth = TYPE_LENGTH (wctype); | |
2056 | gdb_byte *buf = alloca (wcwidth); | |
2057 | struct obstack output; | |
2058 | struct cleanup *inner_cleanup; | |
2059 | ||
2060 | tem = value_as_address (value); | |
2061 | ||
2062 | /* This is a %s argument. Find the length of the string. */ | |
2063 | for (j = 0;; j += wcwidth) | |
2064 | { | |
2065 | QUIT; | |
2066 | read_memory (tem + j, buf, wcwidth); | |
2067 | if (extract_unsigned_integer (buf, wcwidth, byte_order) == 0) | |
2068 | break; | |
2069 | } | |
2070 | ||
2071 | /* Copy the string contents into a string inside GDB. */ | |
2072 | str = (gdb_byte *) alloca (j + wcwidth); | |
2073 | if (j != 0) | |
2074 | read_memory (tem, str, j); | |
2075 | memset (&str[j], 0, wcwidth); | |
2076 | ||
2077 | obstack_init (&output); | |
2078 | inner_cleanup = make_cleanup_obstack_free (&output); | |
2079 | ||
2080 | convert_between_encodings (target_wide_charset (gdbarch), | |
2081 | host_charset (), | |
2082 | str, j, wcwidth, | |
2083 | &output, translit_char); | |
2084 | obstack_grow_str0 (&output, ""); | |
2085 | ||
2086 | fprintf_filtered (stream, format, obstack_base (&output)); | |
2087 | do_cleanups (inner_cleanup); | |
2088 | } | |
2089 | ||
2090 | /* Subroutine of ui_printf to simplify it. | |
2091 | Print VALUE, a decimal floating point value, to STREAM using FORMAT. */ | |
2092 | ||
2093 | static void | |
2094 | printf_decfloat (struct ui_file *stream, const char *format, | |
2095 | struct value *value) | |
2096 | { | |
2097 | const gdb_byte *param_ptr = value_contents (value); | |
2098 | ||
2099 | #if defined (PRINTF_HAS_DECFLOAT) | |
2100 | /* If we have native support for Decimal floating | |
2101 | printing, handle it here. */ | |
2102 | fprintf_filtered (stream, format, param_ptr); | |
2103 | #else | |
2104 | /* As a workaround until vasprintf has native support for DFP | |
2105 | we convert the DFP values to string and print them using | |
2106 | the %s format specifier. */ | |
2107 | const char *p; | |
2108 | ||
2109 | /* Parameter data. */ | |
2110 | struct type *param_type = value_type (value); | |
2111 | struct gdbarch *gdbarch = get_type_arch (param_type); | |
2112 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
2113 | ||
2114 | /* DFP output data. */ | |
2115 | struct value *dfp_value = NULL; | |
2116 | gdb_byte *dfp_ptr; | |
2117 | int dfp_len = 16; | |
2118 | gdb_byte dec[16]; | |
2119 | struct type *dfp_type = NULL; | |
2120 | char decstr[MAX_DECIMAL_STRING]; | |
2121 | ||
2122 | /* Points to the end of the string so that we can go back | |
2123 | and check for DFP length modifiers. */ | |
2124 | p = format + strlen (format); | |
2125 | ||
2126 | /* Look for the float/double format specifier. */ | |
2127 | while (*p != 'f' && *p != 'e' && *p != 'E' | |
2128 | && *p != 'g' && *p != 'G') | |
2129 | p--; | |
2130 | ||
2131 | /* Search for the '%' char and extract the size and type of | |
2132 | the output decimal value based on its modifiers | |
2133 | (%Hf, %Df, %DDf). */ | |
2134 | while (*--p != '%') | |
2135 | { | |
2136 | if (*p == 'H') | |
2137 | { | |
2138 | dfp_len = 4; | |
2139 | dfp_type = builtin_type (gdbarch)->builtin_decfloat; | |
2140 | } | |
2141 | else if (*p == 'D' && *(p - 1) == 'D') | |
2142 | { | |
2143 | dfp_len = 16; | |
2144 | dfp_type = builtin_type (gdbarch)->builtin_declong; | |
2145 | p--; | |
2146 | } | |
2147 | else | |
2148 | { | |
2149 | dfp_len = 8; | |
2150 | dfp_type = builtin_type (gdbarch)->builtin_decdouble; | |
2151 | } | |
2152 | } | |
2153 | ||
2154 | /* Conversion between different DFP types. */ | |
2155 | if (TYPE_CODE (param_type) == TYPE_CODE_DECFLOAT) | |
2156 | decimal_convert (param_ptr, TYPE_LENGTH (param_type), | |
2157 | byte_order, dec, dfp_len, byte_order); | |
2158 | else | |
2159 | /* If this is a non-trivial conversion, just output 0. | |
2160 | A correct converted value can be displayed by explicitly | |
2161 | casting to a DFP type. */ | |
2162 | decimal_from_string (dec, dfp_len, byte_order, "0"); | |
2163 | ||
2164 | dfp_value = value_from_decfloat (dfp_type, dec); | |
2165 | ||
2166 | dfp_ptr = (gdb_byte *) value_contents (dfp_value); | |
2167 | ||
2168 | decimal_to_string (dfp_ptr, dfp_len, byte_order, decstr); | |
2169 | ||
2170 | /* Print the DFP value. */ | |
2171 | fprintf_filtered (stream, "%s", decstr); | |
2172 | #endif | |
2173 | } | |
2174 | ||
2175 | /* Subroutine of ui_printf to simplify it. | |
2176 | Print VALUE, a target pointer, to STREAM using FORMAT. */ | |
2177 | ||
2178 | static void | |
2179 | printf_pointer (struct ui_file *stream, const char *format, | |
2180 | struct value *value) | |
2181 | { | |
2182 | /* We avoid the host's %p because pointers are too | |
2183 | likely to be the wrong size. The only interesting | |
2184 | modifier for %p is a width; extract that, and then | |
2185 | handle %p as glibc would: %#x or a literal "(nil)". */ | |
2186 | ||
2187 | const char *p; | |
2188 | char *fmt, *fmt_p; | |
2189 | #ifdef PRINTF_HAS_LONG_LONG | |
2190 | long long val = value_as_long (value); | |
2191 | #else | |
2192 | long val = value_as_long (value); | |
2193 | #endif | |
2194 | ||
2195 | fmt = alloca (strlen (format) + 5); | |
2196 | ||
2197 | /* Copy up to the leading %. */ | |
2198 | p = format; | |
2199 | fmt_p = fmt; | |
2200 | while (*p) | |
2201 | { | |
2202 | int is_percent = (*p == '%'); | |
2203 | ||
2204 | *fmt_p++ = *p++; | |
2205 | if (is_percent) | |
2206 | { | |
2207 | if (*p == '%') | |
2208 | *fmt_p++ = *p++; | |
2209 | else | |
2210 | break; | |
2211 | } | |
2212 | } | |
2213 | ||
2214 | if (val != 0) | |
2215 | *fmt_p++ = '#'; | |
2216 | ||
2217 | /* Copy any width. */ | |
2218 | while (*p >= '0' && *p < '9') | |
2219 | *fmt_p++ = *p++; | |
2220 | ||
2221 | gdb_assert (*p == 'p' && *(p + 1) == '\0'); | |
2222 | if (val != 0) | |
2223 | { | |
2224 | #ifdef PRINTF_HAS_LONG_LONG | |
2225 | *fmt_p++ = 'l'; | |
2226 | #endif | |
2227 | *fmt_p++ = 'l'; | |
2228 | *fmt_p++ = 'x'; | |
2229 | *fmt_p++ = '\0'; | |
2230 | fprintf_filtered (stream, fmt, val); | |
2231 | } | |
2232 | else | |
2233 | { | |
2234 | *fmt_p++ = 's'; | |
2235 | *fmt_p++ = '\0'; | |
2236 | fprintf_filtered (stream, fmt, "(nil)"); | |
2237 | } | |
2238 | } | |
2239 | ||
a04b0428 JB |
2240 | /* printf "printf format string" ARG to STREAM. */ |
2241 | ||
2242 | static void | |
bbc13ae3 | 2243 | ui_printf (const char *arg, struct ui_file *stream) |
c906108c | 2244 | { |
d3ce09f5 | 2245 | struct format_piece *fpieces; |
bbc13ae3 | 2246 | const char *s = arg; |
3d6d86c6 | 2247 | struct value **val_args; |
c906108c SS |
2248 | int allocated_args = 20; |
2249 | struct cleanup *old_cleanups; | |
2250 | ||
675dcf4f | 2251 | val_args = xmalloc (allocated_args * sizeof (struct value *)); |
c13c43fd | 2252 | old_cleanups = make_cleanup (free_current_contents, &val_args); |
c906108c SS |
2253 | |
2254 | if (s == 0) | |
e2e0b3e5 | 2255 | error_no_arg (_("format-control string and values to print")); |
c906108c | 2256 | |
bbc13ae3 | 2257 | s = skip_spaces_const (s); |
c906108c | 2258 | |
675dcf4f | 2259 | /* A format string should follow, enveloped in double quotes. */ |
c906108c | 2260 | if (*s++ != '"') |
8a3fe4f8 | 2261 | error (_("Bad format string, missing '\"'.")); |
c906108c | 2262 | |
d3ce09f5 | 2263 | fpieces = parse_format_string (&s); |
c906108c | 2264 | |
d3ce09f5 | 2265 | make_cleanup (free_format_pieces_cleanup, &fpieces); |
c906108c | 2266 | |
d3ce09f5 SS |
2267 | if (*s++ != '"') |
2268 | error (_("Bad format string, non-terminated '\"'.")); | |
2269 | ||
bbc13ae3 | 2270 | s = skip_spaces_const (s); |
c906108c SS |
2271 | |
2272 | if (*s != ',' && *s != 0) | |
8a3fe4f8 | 2273 | error (_("Invalid argument syntax")); |
c906108c | 2274 | |
c5aa993b JM |
2275 | if (*s == ',') |
2276 | s++; | |
bbc13ae3 | 2277 | s = skip_spaces_const (s); |
c906108c | 2278 | |
c906108c | 2279 | { |
d3ce09f5 | 2280 | int nargs = 0; |
c906108c | 2281 | int nargs_wanted; |
d3ce09f5 SS |
2282 | int i, fr; |
2283 | char *current_substring; | |
c906108c | 2284 | |
c906108c | 2285 | nargs_wanted = 0; |
d3ce09f5 SS |
2286 | for (fr = 0; fpieces[fr].string != NULL; fr++) |
2287 | if (fpieces[fr].argclass != literal_piece) | |
2288 | ++nargs_wanted; | |
c906108c SS |
2289 | |
2290 | /* Now, parse all arguments and evaluate them. | |
2291 | Store the VALUEs in VAL_ARGS. */ | |
2292 | ||
2293 | while (*s != '\0') | |
2294 | { | |
bbc13ae3 | 2295 | const char *s1; |
ad3bbd48 | 2296 | |
c906108c | 2297 | if (nargs == allocated_args) |
f976f6d4 AC |
2298 | val_args = (struct value **) xrealloc ((char *) val_args, |
2299 | (allocated_args *= 2) | |
2300 | * sizeof (struct value *)); | |
a04b0428 JB |
2301 | s1 = s; |
2302 | val_args[nargs] = parse_to_comma_and_eval (&s1); | |
c5aa993b | 2303 | |
c906108c SS |
2304 | nargs++; |
2305 | s = s1; | |
2306 | if (*s == ',') | |
2307 | s++; | |
2308 | } | |
c5aa993b | 2309 | |
c906108c | 2310 | if (nargs != nargs_wanted) |
8a3fe4f8 | 2311 | error (_("Wrong number of arguments for specified format-string")); |
c906108c SS |
2312 | |
2313 | /* Now actually print them. */ | |
d3ce09f5 SS |
2314 | i = 0; |
2315 | for (fr = 0; fpieces[fr].string != NULL; fr++) | |
c906108c | 2316 | { |
d3ce09f5 SS |
2317 | current_substring = fpieces[fr].string; |
2318 | switch (fpieces[fr].argclass) | |
c906108c SS |
2319 | { |
2320 | case string_arg: | |
c2792f5a | 2321 | printf_c_string (stream, current_substring, val_args[i]); |
c906108c | 2322 | break; |
6c7a06a3 | 2323 | case wide_string_arg: |
c2792f5a | 2324 | printf_wide_c_string (stream, current_substring, val_args[i]); |
6c7a06a3 TT |
2325 | break; |
2326 | case wide_char_arg: | |
2327 | { | |
50810684 UW |
2328 | struct gdbarch *gdbarch |
2329 | = get_type_arch (value_type (val_args[i])); | |
2330 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
e6c014f2 | 2331 | "wchar_t", NULL, 0); |
6c7a06a3 TT |
2332 | struct type *valtype; |
2333 | struct obstack output; | |
2334 | struct cleanup *inner_cleanup; | |
2335 | const gdb_byte *bytes; | |
2336 | ||
2337 | valtype = value_type (val_args[i]); | |
2338 | if (TYPE_LENGTH (valtype) != TYPE_LENGTH (wctype) | |
2339 | || TYPE_CODE (valtype) != TYPE_CODE_INT) | |
2340 | error (_("expected wchar_t argument for %%lc")); | |
2341 | ||
2342 | bytes = value_contents (val_args[i]); | |
2343 | ||
2344 | obstack_init (&output); | |
2345 | inner_cleanup = make_cleanup_obstack_free (&output); | |
2346 | ||
f870a310 | 2347 | convert_between_encodings (target_wide_charset (gdbarch), |
6c7a06a3 TT |
2348 | host_charset (), |
2349 | bytes, TYPE_LENGTH (valtype), | |
2350 | TYPE_LENGTH (valtype), | |
2351 | &output, translit_char); | |
2352 | obstack_grow_str0 (&output, ""); | |
2353 | ||
f1421989 HZ |
2354 | fprintf_filtered (stream, current_substring, |
2355 | obstack_base (&output)); | |
6c7a06a3 TT |
2356 | do_cleanups (inner_cleanup); |
2357 | } | |
2358 | break; | |
c906108c SS |
2359 | case double_arg: |
2360 | { | |
b806fb9a UW |
2361 | struct type *type = value_type (val_args[i]); |
2362 | DOUBLEST val; | |
2363 | int inv; | |
2364 | ||
2365 | /* If format string wants a float, unchecked-convert the value | |
2366 | to floating point of the same size. */ | |
50810684 | 2367 | type = float_type_from_length (type); |
b806fb9a UW |
2368 | val = unpack_double (type, value_contents (val_args[i]), &inv); |
2369 | if (inv) | |
2370 | error (_("Invalid floating value found in program.")); | |
2371 | ||
f1421989 | 2372 | fprintf_filtered (stream, current_substring, (double) val); |
c906108c SS |
2373 | break; |
2374 | } | |
46e9880c DJ |
2375 | case long_double_arg: |
2376 | #ifdef HAVE_LONG_DOUBLE | |
2377 | { | |
b806fb9a UW |
2378 | struct type *type = value_type (val_args[i]); |
2379 | DOUBLEST val; | |
2380 | int inv; | |
2381 | ||
2382 | /* If format string wants a float, unchecked-convert the value | |
2383 | to floating point of the same size. */ | |
50810684 | 2384 | type = float_type_from_length (type); |
b806fb9a UW |
2385 | val = unpack_double (type, value_contents (val_args[i]), &inv); |
2386 | if (inv) | |
2387 | error (_("Invalid floating value found in program.")); | |
2388 | ||
f1421989 HZ |
2389 | fprintf_filtered (stream, current_substring, |
2390 | (long double) val); | |
46e9880c DJ |
2391 | break; |
2392 | } | |
2393 | #else | |
2394 | error (_("long double not supported in printf")); | |
2395 | #endif | |
c906108c | 2396 | case long_long_arg: |
74a0d9f6 | 2397 | #ifdef PRINTF_HAS_LONG_LONG |
c906108c SS |
2398 | { |
2399 | long long val = value_as_long (val_args[i]); | |
ad3bbd48 | 2400 | |
f1421989 | 2401 | fprintf_filtered (stream, current_substring, val); |
c906108c SS |
2402 | break; |
2403 | } | |
2404 | #else | |
8a3fe4f8 | 2405 | error (_("long long not supported in printf")); |
c906108c SS |
2406 | #endif |
2407 | case int_arg: | |
2408 | { | |
46e9880c | 2409 | int val = value_as_long (val_args[i]); |
ad3bbd48 | 2410 | |
f1421989 | 2411 | fprintf_filtered (stream, current_substring, val); |
46e9880c DJ |
2412 | break; |
2413 | } | |
2414 | case long_arg: | |
2415 | { | |
c906108c | 2416 | long val = value_as_long (val_args[i]); |
ad3bbd48 | 2417 | |
f1421989 | 2418 | fprintf_filtered (stream, current_substring, val); |
c906108c SS |
2419 | break; |
2420 | } | |
0aea4bf3 | 2421 | /* Handles decimal floating values. */ |
c2792f5a DE |
2422 | case decfloat_arg: |
2423 | printf_decfloat (stream, current_substring, val_args[i]); | |
2424 | break; | |
2025a643 | 2425 | case ptr_arg: |
c2792f5a DE |
2426 | printf_pointer (stream, current_substring, val_args[i]); |
2427 | break; | |
d3ce09f5 SS |
2428 | case literal_piece: |
2429 | /* Print a portion of the format string that has no | |
2430 | directives. Note that this will not include any | |
2431 | ordinary %-specs, but it might include "%%". That is | |
2432 | why we use printf_filtered and not puts_filtered here. | |
2433 | Also, we pass a dummy argument because some platforms | |
2434 | have modified GCC to include -Wformat-security by | |
2435 | default, which will warn here if there is no | |
2436 | argument. */ | |
2437 | fprintf_filtered (stream, current_substring, 0); | |
2438 | break; | |
675dcf4f MK |
2439 | default: |
2440 | internal_error (__FILE__, __LINE__, | |
2025a643 | 2441 | _("failed internal consistency check")); |
c906108c | 2442 | } |
d3ce09f5 SS |
2443 | /* Maybe advance to the next argument. */ |
2444 | if (fpieces[fr].argclass != literal_piece) | |
2445 | ++i; | |
c906108c | 2446 | } |
c906108c SS |
2447 | } |
2448 | do_cleanups (old_cleanups); | |
2449 | } | |
c906108c | 2450 | |
f1421989 HZ |
2451 | /* Implement the "printf" command. */ |
2452 | ||
a04b0428 | 2453 | static void |
f1421989 HZ |
2454 | printf_command (char *arg, int from_tty) |
2455 | { | |
a04b0428 | 2456 | ui_printf (arg, gdb_stdout); |
f1421989 HZ |
2457 | } |
2458 | ||
2459 | /* Implement the "eval" command. */ | |
2460 | ||
2461 | static void | |
2462 | eval_command (char *arg, int from_tty) | |
2463 | { | |
2464 | struct ui_file *ui_out = mem_fileopen (); | |
2465 | struct cleanup *cleanups = make_cleanup_ui_file_delete (ui_out); | |
2466 | char *expanded; | |
2467 | ||
a04b0428 | 2468 | ui_printf (arg, ui_out); |
f1421989 HZ |
2469 | |
2470 | expanded = ui_file_xstrdup (ui_out, NULL); | |
2471 | make_cleanup (xfree, expanded); | |
2472 | ||
2473 | execute_command (expanded, from_tty); | |
2474 | ||
2475 | do_cleanups (cleanups); | |
2476 | } | |
2477 | ||
c906108c | 2478 | void |
fba45db2 | 2479 | _initialize_printcmd (void) |
c906108c | 2480 | { |
c94fdfd0 EZ |
2481 | struct cmd_list_element *c; |
2482 | ||
c906108c SS |
2483 | current_display_number = -1; |
2484 | ||
a3247a22 PP |
2485 | observer_attach_solib_unloaded (clear_dangling_display_expressions); |
2486 | ||
c906108c | 2487 | add_info ("address", address_info, |
1bedd215 | 2488 | _("Describe where symbol SYM is stored.")); |
c906108c | 2489 | |
1bedd215 AC |
2490 | add_info ("symbol", sym_info, _("\ |
2491 | Describe what symbol is at location ADDR.\n\ | |
2492 | Only for symbols with fixed locations (global or static scope).")); | |
c906108c | 2493 | |
1bedd215 AC |
2494 | add_com ("x", class_vars, x_command, _("\ |
2495 | Examine memory: x/FMT ADDRESS.\n\ | |
c906108c SS |
2496 | ADDRESS is an expression for the memory address to examine.\n\ |
2497 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2498 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
1bedd215 AC |
2499 | t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n\ |
2500 | Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ | |
c906108c SS |
2501 | The specified number of objects of the specified size are printed\n\ |
2502 | according to the format.\n\n\ | |
2503 | Defaults for format and size letters are those previously used.\n\ | |
2504 | Default count is 1. Default address is following last thing printed\n\ | |
1bedd215 | 2505 | with this command or \"print\".")); |
c906108c | 2506 | |
c906108c SS |
2507 | #if 0 |
2508 | add_com ("whereis", class_vars, whereis_command, | |
1bedd215 | 2509 | _("Print line number and file of definition of variable.")); |
c906108c | 2510 | #endif |
c5aa993b | 2511 | |
1bedd215 AC |
2512 | add_info ("display", display_info, _("\ |
2513 | Expressions to display when program stops, with code numbers.")); | |
c906108c | 2514 | |
1a966eab AC |
2515 | add_cmd ("undisplay", class_vars, undisplay_command, _("\ |
2516 | Cancel some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2517 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2518 | No argument means cancel all automatic-display expressions.\n\ | |
2519 | \"delete display\" has the same effect as this command.\n\ | |
1a966eab | 2520 | Do \"info display\" to see current list of code numbers."), |
c5aa993b | 2521 | &cmdlist); |
c906108c | 2522 | |
1bedd215 AC |
2523 | add_com ("display", class_vars, display_command, _("\ |
2524 | Print value of expression EXP each time the program stops.\n\ | |
c906108c SS |
2525 | /FMT may be used before EXP as in the \"print\" command.\n\ |
2526 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2527 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2528 | and examining is done as in the \"x\" command.\n\n\ | |
2529 | With no argument, display all currently requested auto-display expressions.\n\ | |
1bedd215 | 2530 | Use \"undisplay\" to cancel display requests previously made.")); |
c906108c | 2531 | |
c9174737 | 2532 | add_cmd ("display", class_vars, enable_display_command, _("\ |
1a966eab | 2533 | Enable some expressions to be displayed when program stops.\n\ |
c906108c SS |
2534 | Arguments are the code numbers of the expressions to resume displaying.\n\ |
2535 | No argument means enable all automatic-display expressions.\n\ | |
1a966eab | 2536 | Do \"info display\" to see current list of code numbers."), &enablelist); |
c906108c | 2537 | |
1a966eab AC |
2538 | add_cmd ("display", class_vars, disable_display_command, _("\ |
2539 | Disable some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2540 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2541 | No argument means disable all automatic-display expressions.\n\ | |
1a966eab | 2542 | Do \"info display\" to see current list of code numbers."), &disablelist); |
c906108c | 2543 | |
1a966eab AC |
2544 | add_cmd ("display", class_vars, undisplay_command, _("\ |
2545 | Cancel some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2546 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2547 | No argument means cancel all automatic-display expressions.\n\ | |
1a966eab | 2548 | Do \"info display\" to see current list of code numbers."), &deletelist); |
c906108c | 2549 | |
1bedd215 AC |
2550 | add_com ("printf", class_vars, printf_command, _("\ |
2551 | printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
2552 | This is useful for formatted output in user-defined commands.")); | |
c906108c | 2553 | |
1bedd215 AC |
2554 | add_com ("output", class_vars, output_command, _("\ |
2555 | Like \"print\" but don't put in value history and don't print newline.\n\ | |
2556 | This is useful in user-defined commands.")); | |
c906108c | 2557 | |
1bedd215 AC |
2558 | add_prefix_cmd ("set", class_vars, set_command, _("\ |
2559 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2560 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2561 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2562 | with $), a register (a few standard names starting with $), or an actual\n\ | |
1bedd215 AC |
2563 | variable in the program being debugged. EXP is any valid expression.\n\ |
2564 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
2565 | \n\ | |
2566 | With a subcommand, this command modifies parts of the gdb environment.\n\ | |
2567 | You can see these environment settings with the \"show\" command."), | |
c5aa993b | 2568 | &setlist, "set ", 1, &cmdlist); |
c906108c | 2569 | if (dbx_commands) |
1bedd215 AC |
2570 | add_com ("assign", class_vars, set_command, _("\ |
2571 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2572 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2573 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2574 | with $), a register (a few standard names starting with $), or an actual\n\ | |
1bedd215 AC |
2575 | variable in the program being debugged. EXP is any valid expression.\n\ |
2576 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
c906108c | 2577 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
1bedd215 | 2578 | You can see these environment settings with the \"show\" command.")); |
c906108c | 2579 | |
0df8b418 | 2580 | /* "call" is the same as "set", but handy for dbx users to call fns. */ |
1bedd215 AC |
2581 | c = add_com ("call", class_vars, call_command, _("\ |
2582 | Call a function in the program.\n\ | |
c906108c SS |
2583 | The argument is the function name and arguments, in the notation of the\n\ |
2584 | current working language. The result is printed and saved in the value\n\ | |
1bedd215 | 2585 | history, if it is not void.")); |
65d12d83 | 2586 | set_cmd_completer (c, expression_completer); |
c906108c | 2587 | |
1a966eab AC |
2588 | add_cmd ("variable", class_vars, set_command, _("\ |
2589 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2590 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2591 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2592 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2593 | variable in the program being debugged. EXP is any valid expression.\n\ | |
1a966eab | 2594 | This may usually be abbreviated to simply \"set\"."), |
c5aa993b | 2595 | &setlist); |
c906108c | 2596 | |
1bedd215 AC |
2597 | c = add_com ("print", class_vars, print_command, _("\ |
2598 | Print value of expression EXP.\n\ | |
c906108c SS |
2599 | Variables accessible are those of the lexical environment of the selected\n\ |
2600 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2601 | \n\ | |
2602 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2603 | $$NUM refers to NUM'th value back from the last one.\n\ | |
1bedd215 AC |
2604 | Names starting with $ refer to registers (with the values they would have\n\ |
2605 | if the program were to return to the stack frame now selected, restoring\n\ | |
c906108c SS |
2606 | all registers saved by frames farther in) or else to debugger\n\ |
2607 | \"convenience\" variables (any such name not a known register).\n\ | |
1bedd215 AC |
2608 | Use assignment expressions to give values to convenience variables.\n\ |
2609 | \n\ | |
c906108c SS |
2610 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ |
2611 | @ is a binary operator for treating consecutive data objects\n\ | |
2612 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2613 | element is FOO, whose second element is stored in the space following\n\ | |
2614 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
1bedd215 AC |
2615 | resides in memory.\n\ |
2616 | \n\ | |
c906108c | 2617 | EXP may be preceded with /FMT, where FMT is a format letter\n\ |
1bedd215 | 2618 | but no count or size letter (see \"x\" command).")); |
65d12d83 | 2619 | set_cmd_completer (c, expression_completer); |
c906108c | 2620 | add_com_alias ("p", "print", class_vars, 1); |
e93a8774 | 2621 | add_com_alias ("inspect", "print", class_vars, 1); |
c906108c | 2622 | |
35096d9d AC |
2623 | add_setshow_uinteger_cmd ("max-symbolic-offset", no_class, |
2624 | &max_symbolic_offset, _("\ | |
2625 | Set the largest offset that will be printed in <symbol+1234> form."), _("\ | |
f81d1120 PA |
2626 | Show the largest offset that will be printed in <symbol+1234> form."), _("\ |
2627 | Tell GDB to only display the symbolic form of an address if the\n\ | |
2628 | offset between the closest earlier symbol and the address is less than\n\ | |
2629 | the specified maximum offset. The default is \"unlimited\", which tells GDB\n\ | |
2630 | to always print the symbolic form of an address if any symbol precedes\n\ | |
2631 | it. Zero is equivalent to \"unlimited\"."), | |
35096d9d | 2632 | NULL, |
920d2a44 | 2633 | show_max_symbolic_offset, |
35096d9d | 2634 | &setprintlist, &showprintlist); |
5bf193a2 AC |
2635 | add_setshow_boolean_cmd ("symbol-filename", no_class, |
2636 | &print_symbol_filename, _("\ | |
2637 | Set printing of source filename and line number with <symbol>."), _("\ | |
2638 | Show printing of source filename and line number with <symbol>."), NULL, | |
2639 | NULL, | |
920d2a44 | 2640 | show_print_symbol_filename, |
5bf193a2 | 2641 | &setprintlist, &showprintlist); |
f1421989 HZ |
2642 | |
2643 | add_com ("eval", no_class, eval_command, _("\ | |
2644 | Convert \"printf format string\", arg1, arg2, arg3, ..., argn to\n\ | |
2645 | a command line, and call it.")); | |
c906108c | 2646 | } |