Commit | Line | Data |
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c906108c | 1 | /* Print values for GNU debugger GDB. |
e2ad119d | 2 | |
ecd75fc8 | 3 | Copyright (C) 1986-2014 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" | |
0e9f083f | 21 | #include <string.h> |
c906108c SS |
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" |
a3247a22 PP |
44 | #include "exceptions.h" |
45 | #include "observer.h" | |
46 | #include "solist.h" | |
a3247a22 | 47 | #include "parser-defs.h" |
6c7a06a3 | 48 | #include "charset.h" |
704e9165 | 49 | #include "arch-utils.h" |
e9cafbcc | 50 | #include "cli/cli-utils.h" |
d3ce09f5 | 51 | #include "format.h" |
05cba821 | 52 | #include "source.h" |
c906108c | 53 | |
6a83354a | 54 | #ifdef TUI |
0df8b418 | 55 | #include "tui/tui.h" /* For tui_active et al. */ |
6a83354a AC |
56 | #endif |
57 | ||
c906108c | 58 | struct format_data |
c5aa993b JM |
59 | { |
60 | int count; | |
61 | char format; | |
62 | char size; | |
a6bac58e TT |
63 | |
64 | /* True if the value should be printed raw -- that is, bypassing | |
65 | python-based formatters. */ | |
66 | unsigned char raw; | |
c5aa993b | 67 | }; |
c906108c SS |
68 | |
69 | /* Last specified output format. */ | |
70 | ||
a6bac58e | 71 | static char last_format = 0; |
c906108c SS |
72 | |
73 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
74 | ||
75 | static char last_size = 'w'; | |
76 | ||
5d3729b5 | 77 | /* Default address to examine next, and associated architecture. */ |
c906108c | 78 | |
5d3729b5 | 79 | static struct gdbarch *next_gdbarch; |
c906108c SS |
80 | static CORE_ADDR next_address; |
81 | ||
a4642986 MR |
82 | /* Number of delay instructions following current disassembled insn. */ |
83 | ||
84 | static int branch_delay_insns; | |
85 | ||
c906108c SS |
86 | /* Last address examined. */ |
87 | ||
88 | static CORE_ADDR last_examine_address; | |
89 | ||
90 | /* Contents of last address examined. | |
91 | This is not valid past the end of the `x' command! */ | |
92 | ||
3d6d86c6 | 93 | static struct value *last_examine_value; |
c906108c SS |
94 | |
95 | /* Largest offset between a symbolic value and an address, that will be | |
96 | printed as `0x1234 <symbol+offset>'. */ | |
97 | ||
98 | static unsigned int max_symbolic_offset = UINT_MAX; | |
920d2a44 AC |
99 | static void |
100 | show_max_symbolic_offset (struct ui_file *file, int from_tty, | |
101 | struct cmd_list_element *c, const char *value) | |
102 | { | |
3e43a32a MS |
103 | fprintf_filtered (file, |
104 | _("The largest offset that will be " | |
105 | "printed in <symbol+1234> form is %s.\n"), | |
920d2a44 AC |
106 | value); |
107 | } | |
c906108c SS |
108 | |
109 | /* Append the source filename and linenumber of the symbol when | |
110 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
111 | static int print_symbol_filename = 0; | |
920d2a44 AC |
112 | static void |
113 | show_print_symbol_filename (struct ui_file *file, int from_tty, | |
114 | struct cmd_list_element *c, const char *value) | |
115 | { | |
3e43a32a MS |
116 | fprintf_filtered (file, _("Printing of source filename and " |
117 | "line number with <symbol> is %s.\n"), | |
920d2a44 AC |
118 | value); |
119 | } | |
c906108c SS |
120 | |
121 | /* Number of auto-display expression currently being displayed. | |
9d8fa392 | 122 | So that we can disable it if we get a signal within it. |
c906108c SS |
123 | -1 when not doing one. */ |
124 | ||
5a18e302 | 125 | static int current_display_number; |
c906108c | 126 | |
c906108c | 127 | struct display |
c5aa993b JM |
128 | { |
129 | /* Chain link to next auto-display item. */ | |
130 | struct display *next; | |
6c95b8df | 131 | |
fa8a61dc TT |
132 | /* The expression as the user typed it. */ |
133 | char *exp_string; | |
6c95b8df | 134 | |
c5aa993b JM |
135 | /* Expression to be evaluated and displayed. */ |
136 | struct expression *exp; | |
6c95b8df | 137 | |
c5aa993b JM |
138 | /* Item number of this auto-display item. */ |
139 | int number; | |
6c95b8df | 140 | |
c5aa993b JM |
141 | /* Display format specified. */ |
142 | struct format_data format; | |
6c95b8df PA |
143 | |
144 | /* Program space associated with `block'. */ | |
145 | struct program_space *pspace; | |
146 | ||
0df8b418 | 147 | /* Innermost block required by this expression when evaluated. */ |
270140bd | 148 | const struct block *block; |
6c95b8df | 149 | |
0df8b418 | 150 | /* Status of this display (enabled or disabled). */ |
b5de0fa7 | 151 | int enabled_p; |
c5aa993b | 152 | }; |
c906108c SS |
153 | |
154 | /* Chain of expressions whose values should be displayed | |
155 | automatically each time the program stops. */ | |
156 | ||
157 | static struct display *display_chain; | |
158 | ||
159 | static int display_number; | |
160 | ||
c9174737 PA |
161 | /* Walk the following statement or block through all displays. |
162 | ALL_DISPLAYS_SAFE does so even if the statement deletes the current | |
163 | display. */ | |
3c3fe74c PA |
164 | |
165 | #define ALL_DISPLAYS(B) \ | |
166 | for (B = display_chain; B; B = B->next) | |
167 | ||
c9174737 PA |
168 | #define ALL_DISPLAYS_SAFE(B,TMP) \ |
169 | for (B = display_chain; \ | |
170 | B ? (TMP = B->next, 1): 0; \ | |
171 | B = TMP) | |
172 | ||
0df8b418 | 173 | /* Prototypes for exported functions. */ |
c906108c | 174 | |
a14ed312 | 175 | void _initialize_printcmd (void); |
c906108c | 176 | |
0df8b418 | 177 | /* Prototypes for local functions. */ |
c906108c | 178 | |
a14ed312 | 179 | static void do_one_display (struct display *); |
c906108c | 180 | \f |
c5aa993b | 181 | |
c906108c SS |
182 | /* Decode a format specification. *STRING_PTR should point to it. |
183 | OFORMAT and OSIZE are used as defaults for the format and size | |
184 | if none are given in the format specification. | |
185 | If OSIZE is zero, then the size field of the returned value | |
186 | should be set only if a size is explicitly specified by the | |
187 | user. | |
188 | The structure returned describes all the data | |
189 | found in the specification. In addition, *STRING_PTR is advanced | |
190 | past the specification and past all whitespace following it. */ | |
191 | ||
192 | static struct format_data | |
6f937416 | 193 | decode_format (const char **string_ptr, int oformat, int osize) |
c906108c SS |
194 | { |
195 | struct format_data val; | |
6f937416 | 196 | const char *p = *string_ptr; |
c906108c SS |
197 | |
198 | val.format = '?'; | |
199 | val.size = '?'; | |
200 | val.count = 1; | |
a6bac58e | 201 | val.raw = 0; |
c906108c SS |
202 | |
203 | if (*p >= '0' && *p <= '9') | |
204 | val.count = atoi (p); | |
c5aa993b JM |
205 | while (*p >= '0' && *p <= '9') |
206 | p++; | |
c906108c SS |
207 | |
208 | /* Now process size or format letters that follow. */ | |
209 | ||
210 | while (1) | |
211 | { | |
212 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
213 | val.size = *p++; | |
a6bac58e TT |
214 | else if (*p == 'r') |
215 | { | |
216 | val.raw = 1; | |
217 | p++; | |
218 | } | |
c906108c SS |
219 | else if (*p >= 'a' && *p <= 'z') |
220 | val.format = *p++; | |
221 | else | |
222 | break; | |
223 | } | |
224 | ||
c5aa993b JM |
225 | while (*p == ' ' || *p == '\t') |
226 | p++; | |
c906108c SS |
227 | *string_ptr = p; |
228 | ||
229 | /* Set defaults for format and size if not specified. */ | |
230 | if (val.format == '?') | |
231 | { | |
232 | if (val.size == '?') | |
233 | { | |
234 | /* Neither has been specified. */ | |
235 | val.format = oformat; | |
236 | val.size = osize; | |
237 | } | |
238 | else | |
239 | /* If a size is specified, any format makes a reasonable | |
240 | default except 'i'. */ | |
241 | val.format = oformat == 'i' ? 'x' : oformat; | |
242 | } | |
243 | else if (val.size == '?') | |
244 | switch (val.format) | |
245 | { | |
246 | case 'a': | |
5d3729b5 UW |
247 | /* Pick the appropriate size for an address. This is deferred |
248 | until do_examine when we know the actual architecture to use. | |
249 | A special size value of 'a' is used to indicate this case. */ | |
250 | val.size = osize ? 'a' : osize; | |
c906108c SS |
251 | break; |
252 | case 'f': | |
253 | /* Floating point has to be word or giantword. */ | |
254 | if (osize == 'w' || osize == 'g') | |
255 | val.size = osize; | |
256 | else | |
257 | /* Default it to giantword if the last used size is not | |
258 | appropriate. */ | |
259 | val.size = osize ? 'g' : osize; | |
260 | break; | |
261 | case 'c': | |
262 | /* Characters default to one byte. */ | |
263 | val.size = osize ? 'b' : osize; | |
264 | break; | |
9a22f0d0 | 265 | case 's': |
3e43a32a MS |
266 | /* Display strings with byte size chars unless explicitly |
267 | specified. */ | |
9a22f0d0 PM |
268 | val.size = '\0'; |
269 | break; | |
270 | ||
c906108c SS |
271 | default: |
272 | /* The default is the size most recently specified. */ | |
273 | val.size = osize; | |
274 | } | |
275 | ||
276 | return val; | |
277 | } | |
278 | \f | |
79a45b7d | 279 | /* Print value VAL on stream according to OPTIONS. |
c906108c | 280 | Do not end with a newline. |
c906108c | 281 | SIZE is the letter for the size of datum being printed. |
ea37ba09 DJ |
282 | This is used to pad hex numbers so they line up. SIZE is 0 |
283 | for print / output and set for examine. */ | |
c906108c SS |
284 | |
285 | static void | |
79a45b7d TT |
286 | print_formatted (struct value *val, int size, |
287 | const struct value_print_options *options, | |
fba45db2 | 288 | struct ui_file *stream) |
c906108c | 289 | { |
df407dfe | 290 | struct type *type = check_typedef (value_type (val)); |
c906108c SS |
291 | int len = TYPE_LENGTH (type); |
292 | ||
293 | if (VALUE_LVAL (val) == lval_memory) | |
42ae5230 | 294 | next_address = value_address (val) + len; |
c906108c | 295 | |
ea37ba09 | 296 | if (size) |
c906108c | 297 | { |
79a45b7d | 298 | switch (options->format) |
ea37ba09 DJ |
299 | { |
300 | case 's': | |
6c7a06a3 TT |
301 | { |
302 | struct type *elttype = value_type (val); | |
ad3bbd48 | 303 | |
42ae5230 | 304 | next_address = (value_address (val) |
09ca9e2e | 305 | + val_print_string (elttype, NULL, |
42ae5230 | 306 | value_address (val), -1, |
9a22f0d0 | 307 | stream, options) * len); |
6c7a06a3 | 308 | } |
ea37ba09 | 309 | return; |
c906108c | 310 | |
ea37ba09 DJ |
311 | case 'i': |
312 | /* We often wrap here if there are long symbolic names. */ | |
313 | wrap_here (" "); | |
42ae5230 | 314 | next_address = (value_address (val) |
13274fc3 UW |
315 | + gdb_print_insn (get_type_arch (type), |
316 | value_address (val), stream, | |
ea37ba09 DJ |
317 | &branch_delay_insns)); |
318 | return; | |
319 | } | |
c906108c | 320 | } |
ea37ba09 | 321 | |
79a45b7d | 322 | if (options->format == 0 || options->format == 's' |
4e885b20 | 323 | || TYPE_CODE (type) == TYPE_CODE_REF |
ea37ba09 DJ |
324 | || TYPE_CODE (type) == TYPE_CODE_ARRAY |
325 | || TYPE_CODE (type) == TYPE_CODE_STRING | |
326 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
327 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
328 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
79a45b7d | 329 | value_print (val, stream, options); |
ea37ba09 | 330 | else |
b021a221 MS |
331 | /* User specified format, so don't look to the type to tell us |
332 | what to do. */ | |
ab2188aa PA |
333 | val_print_scalar_formatted (type, |
334 | value_contents_for_printing (val), | |
335 | value_embedded_offset (val), | |
336 | val, | |
337 | options, size, stream); | |
c906108c SS |
338 | } |
339 | ||
b806fb9a UW |
340 | /* Return builtin floating point type of same length as TYPE. |
341 | If no such type is found, return TYPE itself. */ | |
342 | static struct type * | |
50810684 | 343 | float_type_from_length (struct type *type) |
b806fb9a | 344 | { |
50810684 | 345 | struct gdbarch *gdbarch = get_type_arch (type); |
b806fb9a | 346 | const struct builtin_type *builtin = builtin_type (gdbarch); |
b806fb9a | 347 | |
744a8059 | 348 | if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_float)) |
b806fb9a | 349 | type = builtin->builtin_float; |
744a8059 | 350 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_double)) |
b806fb9a | 351 | type = builtin->builtin_double; |
744a8059 | 352 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_long_double)) |
b806fb9a UW |
353 | type = builtin->builtin_long_double; |
354 | ||
355 | return type; | |
356 | } | |
357 | ||
c906108c | 358 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, |
ab2188aa PA |
359 | according to OPTIONS and SIZE on STREAM. Formats s and i are not |
360 | supported at this level. */ | |
c906108c SS |
361 | |
362 | void | |
366b1cbf | 363 | print_scalar_formatted (const void *valaddr, struct type *type, |
79a45b7d TT |
364 | const struct value_print_options *options, |
365 | int size, struct ui_file *stream) | |
c906108c | 366 | { |
50810684 | 367 | struct gdbarch *gdbarch = get_type_arch (type); |
81cb7cc9 | 368 | LONGEST val_long = 0; |
c906108c | 369 | unsigned int len = TYPE_LENGTH (type); |
69feb676 | 370 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 371 | |
ab2188aa PA |
372 | /* String printing should go through val_print_scalar_formatted. */ |
373 | gdb_assert (options->format != 's'); | |
ea37ba09 | 374 | |
6b9acc27 JJ |
375 | if (len > sizeof(LONGEST) && |
376 | (TYPE_CODE (type) == TYPE_CODE_INT | |
377 | || TYPE_CODE (type) == TYPE_CODE_ENUM)) | |
378 | { | |
79a45b7d | 379 | switch (options->format) |
6b9acc27 JJ |
380 | { |
381 | case 'o': | |
d44e8473 | 382 | print_octal_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
383 | return; |
384 | case 'u': | |
385 | case 'd': | |
d44e8473 | 386 | print_decimal_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
387 | return; |
388 | case 't': | |
d44e8473 | 389 | print_binary_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
390 | return; |
391 | case 'x': | |
d44e8473 | 392 | print_hex_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
393 | return; |
394 | case 'c': | |
6c7a06a3 | 395 | print_char_chars (stream, type, valaddr, len, byte_order); |
6b9acc27 JJ |
396 | return; |
397 | default: | |
398 | break; | |
399 | }; | |
400 | } | |
401 | ||
79a45b7d | 402 | if (options->format != 'f') |
c906108c SS |
403 | val_long = unpack_long (type, valaddr); |
404 | ||
ef166cf4 | 405 | /* If the value is a pointer, and pointers and addresses are not the |
d0aee0c4 | 406 | same, then at this point, the value's length (in target bytes) is |
17a912b6 | 407 | gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */ |
ef166cf4 | 408 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
69feb676 | 409 | len = gdbarch_addr_bit (gdbarch) / TARGET_CHAR_BIT; |
ef166cf4 | 410 | |
c906108c SS |
411 | /* If we are printing it as unsigned, truncate it in case it is actually |
412 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
413 | (if shorts are 16 bits) instead of 4294967295). */ | |
1fac167a | 414 | if (options->format != 'd' || TYPE_UNSIGNED (type)) |
c906108c SS |
415 | { |
416 | if (len < sizeof (LONGEST)) | |
417 | val_long &= ((LONGEST) 1 << HOST_CHAR_BIT * len) - 1; | |
418 | } | |
419 | ||
79a45b7d | 420 | switch (options->format) |
c906108c SS |
421 | { |
422 | case 'x': | |
423 | if (!size) | |
424 | { | |
675dcf4f | 425 | /* No size specified, like in print. Print varying # of digits. */ |
c906108c SS |
426 | print_longest (stream, 'x', 1, val_long); |
427 | } | |
428 | else | |
429 | switch (size) | |
430 | { | |
431 | case 'b': | |
432 | case 'h': | |
433 | case 'w': | |
434 | case 'g': | |
435 | print_longest (stream, size, 1, val_long); | |
436 | break; | |
437 | default: | |
8a3fe4f8 | 438 | error (_("Undefined output size \"%c\"."), size); |
c906108c SS |
439 | } |
440 | break; | |
441 | ||
442 | case 'd': | |
443 | print_longest (stream, 'd', 1, val_long); | |
444 | break; | |
445 | ||
446 | case 'u': | |
447 | print_longest (stream, 'u', 0, val_long); | |
448 | break; | |
449 | ||
450 | case 'o': | |
451 | if (val_long) | |
452 | print_longest (stream, 'o', 1, val_long); | |
453 | else | |
454 | fprintf_filtered (stream, "0"); | |
455 | break; | |
456 | ||
457 | case 'a': | |
593de6a6 | 458 | { |
593de6a6 | 459 | CORE_ADDR addr = unpack_pointer (type, valaddr); |
ad3bbd48 | 460 | |
5af949e3 | 461 | print_address (gdbarch, addr, stream); |
593de6a6 | 462 | } |
c906108c SS |
463 | break; |
464 | ||
465 | case 'c': | |
79a45b7d TT |
466 | { |
467 | struct value_print_options opts = *options; | |
69feb676 | 468 | |
ad3bbd48 | 469 | opts.format = 0; |
79a45b7d | 470 | if (TYPE_UNSIGNED (type)) |
69feb676 UW |
471 | type = builtin_type (gdbarch)->builtin_true_unsigned_char; |
472 | else | |
473 | type = builtin_type (gdbarch)->builtin_true_char; | |
474 | ||
475 | value_print (value_from_longest (type, val_long), stream, &opts); | |
79a45b7d | 476 | } |
c906108c SS |
477 | break; |
478 | ||
479 | case 'f': | |
50810684 | 480 | type = float_type_from_length (type); |
c906108c SS |
481 | print_floating (valaddr, type, stream); |
482 | break; | |
483 | ||
484 | case 0: | |
675dcf4f MK |
485 | internal_error (__FILE__, __LINE__, |
486 | _("failed internal consistency check")); | |
c906108c SS |
487 | |
488 | case 't': | |
489 | /* Binary; 't' stands for "two". */ | |
490 | { | |
c5aa993b JM |
491 | char bits[8 * (sizeof val_long) + 1]; |
492 | char buf[8 * (sizeof val_long) + 32]; | |
c906108c SS |
493 | char *cp = bits; |
494 | int width; | |
495 | ||
c5aa993b JM |
496 | if (!size) |
497 | width = 8 * (sizeof val_long); | |
498 | else | |
499 | switch (size) | |
c906108c SS |
500 | { |
501 | case 'b': | |
502 | width = 8; | |
503 | break; | |
504 | case 'h': | |
505 | width = 16; | |
506 | break; | |
507 | case 'w': | |
508 | width = 32; | |
509 | break; | |
510 | case 'g': | |
511 | width = 64; | |
512 | break; | |
513 | default: | |
8a3fe4f8 | 514 | error (_("Undefined output size \"%c\"."), size); |
c906108c SS |
515 | } |
516 | ||
c5aa993b JM |
517 | bits[width] = '\0'; |
518 | while (width-- > 0) | |
519 | { | |
520 | bits[width] = (val_long & 1) ? '1' : '0'; | |
521 | val_long >>= 1; | |
522 | } | |
c906108c SS |
523 | if (!size) |
524 | { | |
525 | while (*cp && *cp == '0') | |
526 | cp++; | |
527 | if (*cp == '\0') | |
528 | cp--; | |
529 | } | |
daac021a | 530 | strncpy (buf, cp, sizeof (bits)); |
306d9ac5 | 531 | fputs_filtered (buf, stream); |
c906108c SS |
532 | } |
533 | break; | |
534 | ||
6fbe845e AB |
535 | case 'z': |
536 | print_hex_chars (stream, valaddr, len, byte_order); | |
537 | break; | |
538 | ||
c906108c | 539 | default: |
79a45b7d | 540 | error (_("Undefined output format \"%c\"."), options->format); |
c906108c SS |
541 | } |
542 | } | |
543 | ||
544 | /* Specify default address for `x' command. | |
675dcf4f | 545 | The `info lines' command uses this. */ |
c906108c SS |
546 | |
547 | void | |
8b9b9e1a | 548 | set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 549 | { |
8b9b9e1a UW |
550 | struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
551 | ||
5d3729b5 | 552 | next_gdbarch = gdbarch; |
c906108c SS |
553 | next_address = addr; |
554 | ||
555 | /* Make address available to the user as $_. */ | |
556 | set_internalvar (lookup_internalvar ("_"), | |
8b9b9e1a | 557 | value_from_pointer (ptr_type, addr)); |
c906108c SS |
558 | } |
559 | ||
560 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
561 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
562 | Optionally also print source file and line number, if available. | |
563 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
564 | or to interpret it as a possible C++ name and convert it back to source | |
565 | form. However note that DO_DEMANGLE can be overridden by the specific | |
9cb709b6 TT |
566 | settings of the demangle and asm_demangle variables. Returns |
567 | non-zero if anything was printed; zero otherwise. */ | |
c906108c | 568 | |
9cb709b6 | 569 | int |
22e722e1 DJ |
570 | print_address_symbolic (struct gdbarch *gdbarch, CORE_ADDR addr, |
571 | struct ui_file *stream, | |
675dcf4f | 572 | int do_demangle, char *leadin) |
dfcd3bfb JM |
573 | { |
574 | char *name = NULL; | |
575 | char *filename = NULL; | |
576 | int unmapped = 0; | |
577 | int offset = 0; | |
578 | int line = 0; | |
579 | ||
675dcf4f | 580 | /* Throw away both name and filename. */ |
2f9429ae AC |
581 | struct cleanup *cleanup_chain = make_cleanup (free_current_contents, &name); |
582 | make_cleanup (free_current_contents, &filename); | |
dfcd3bfb | 583 | |
22e722e1 | 584 | if (build_address_symbolic (gdbarch, addr, do_demangle, &name, &offset, |
675dcf4f | 585 | &filename, &line, &unmapped)) |
2f9429ae AC |
586 | { |
587 | do_cleanups (cleanup_chain); | |
9cb709b6 | 588 | return 0; |
2f9429ae | 589 | } |
dfcd3bfb JM |
590 | |
591 | fputs_filtered (leadin, stream); | |
592 | if (unmapped) | |
593 | fputs_filtered ("<*", stream); | |
594 | else | |
595 | fputs_filtered ("<", stream); | |
596 | fputs_filtered (name, stream); | |
597 | if (offset != 0) | |
598 | fprintf_filtered (stream, "+%u", (unsigned int) offset); | |
599 | ||
600 | /* Append source filename and line number if desired. Give specific | |
601 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
602 | if (print_symbol_filename && filename != NULL) | |
603 | { | |
604 | if (line != -1) | |
605 | fprintf_filtered (stream, " at %s:%d", filename, line); | |
606 | else | |
607 | fprintf_filtered (stream, " in %s", filename); | |
608 | } | |
609 | if (unmapped) | |
610 | fputs_filtered ("*>", stream); | |
611 | else | |
612 | fputs_filtered (">", stream); | |
613 | ||
614 | do_cleanups (cleanup_chain); | |
9cb709b6 | 615 | return 1; |
dfcd3bfb JM |
616 | } |
617 | ||
618 | /* Given an address ADDR return all the elements needed to print the | |
0df8b418 | 619 | address in a symbolic form. NAME can be mangled or not depending |
dfcd3bfb | 620 | on DO_DEMANGLE (and also on the asm_demangle global variable, |
0df8b418 MS |
621 | manipulated via ''set print asm-demangle''). Return 0 in case of |
622 | success, when all the info in the OUT paramters is valid. Return 1 | |
623 | otherwise. */ | |
dfcd3bfb | 624 | int |
22e722e1 DJ |
625 | build_address_symbolic (struct gdbarch *gdbarch, |
626 | CORE_ADDR addr, /* IN */ | |
dfcd3bfb JM |
627 | int do_demangle, /* IN */ |
628 | char **name, /* OUT */ | |
629 | int *offset, /* OUT */ | |
630 | char **filename, /* OUT */ | |
631 | int *line, /* OUT */ | |
632 | int *unmapped) /* OUT */ | |
c906108c SS |
633 | { |
634 | struct minimal_symbol *msymbol; | |
635 | struct symbol *symbol; | |
c906108c | 636 | CORE_ADDR name_location = 0; |
714835d5 | 637 | struct obj_section *section = NULL; |
0d5cff50 | 638 | const char *name_temp = ""; |
dfcd3bfb | 639 | |
89c83b10 | 640 | /* Let's say it is mapped (not unmapped). */ |
dfcd3bfb | 641 | *unmapped = 0; |
c906108c | 642 | |
dfcd3bfb | 643 | /* Determine if the address is in an overlay, and whether it is |
675dcf4f | 644 | mapped. */ |
c906108c SS |
645 | if (overlay_debugging) |
646 | { | |
647 | section = find_pc_overlay (addr); | |
648 | if (pc_in_unmapped_range (addr, section)) | |
649 | { | |
dfcd3bfb | 650 | *unmapped = 1; |
c906108c SS |
651 | addr = overlay_mapped_address (addr, section); |
652 | } | |
653 | } | |
654 | ||
c906108c SS |
655 | /* First try to find the address in the symbol table, then |
656 | in the minsyms. Take the closest one. */ | |
657 | ||
658 | /* This is defective in the sense that it only finds text symbols. So | |
659 | really this is kind of pointless--we should make sure that the | |
660 | minimal symbols have everything we need (by changing that we could | |
661 | save some memory, but for many debug format--ELF/DWARF or | |
662 | anything/stabs--it would be inconvenient to eliminate those minimal | |
663 | symbols anyway). */ | |
7cbd4a93 | 664 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section).minsym; |
c906108c SS |
665 | symbol = find_pc_sect_function (addr, section); |
666 | ||
667 | if (symbol) | |
668 | { | |
22e722e1 DJ |
669 | /* If this is a function (i.e. a code address), strip out any |
670 | non-address bits. For instance, display a pointer to the | |
671 | first instruction of a Thumb function as <function>; the | |
672 | second instruction will be <function+2>, even though the | |
673 | pointer is <function+3>. This matches the ISA behavior. */ | |
674 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
675 | ||
c906108c | 676 | name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol)); |
406fc7fb | 677 | if (do_demangle || asm_demangle) |
de5ad195 | 678 | name_temp = SYMBOL_PRINT_NAME (symbol); |
c906108c | 679 | else |
3567439c | 680 | name_temp = SYMBOL_LINKAGE_NAME (symbol); |
c906108c SS |
681 | } |
682 | ||
9cb709b6 | 683 | if (msymbol != NULL |
d9eaeb59 | 684 | && MSYMBOL_HAS_SIZE (msymbol) |
9cb709b6 TT |
685 | && MSYMBOL_SIZE (msymbol) == 0 |
686 | && MSYMBOL_TYPE (msymbol) != mst_text | |
687 | && MSYMBOL_TYPE (msymbol) != mst_text_gnu_ifunc | |
688 | && MSYMBOL_TYPE (msymbol) != mst_file_text) | |
689 | msymbol = NULL; | |
690 | ||
c906108c SS |
691 | if (msymbol != NULL) |
692 | { | |
693 | if (SYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL) | |
694 | { | |
fe8400b4 WN |
695 | /* If this is a function (i.e. a code address), strip out any |
696 | non-address bits. For instance, display a pointer to the | |
697 | first instruction of a Thumb function as <function>; the | |
698 | second instruction will be <function+2>, even though the | |
699 | pointer is <function+3>. This matches the ISA behavior. */ | |
700 | if (MSYMBOL_TYPE (msymbol) == mst_text | |
701 | || MSYMBOL_TYPE (msymbol) == mst_text_gnu_ifunc | |
702 | || MSYMBOL_TYPE (msymbol) == mst_file_text | |
703 | || MSYMBOL_TYPE (msymbol) == mst_solib_trampoline) | |
704 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
705 | ||
c906108c SS |
706 | /* The msymbol is closer to the address than the symbol; |
707 | use the msymbol instead. */ | |
708 | symbol = 0; | |
c906108c | 709 | name_location = SYMBOL_VALUE_ADDRESS (msymbol); |
406fc7fb | 710 | if (do_demangle || asm_demangle) |
de5ad195 | 711 | name_temp = SYMBOL_PRINT_NAME (msymbol); |
c906108c | 712 | else |
3567439c | 713 | name_temp = SYMBOL_LINKAGE_NAME (msymbol); |
c906108c SS |
714 | } |
715 | } | |
716 | if (symbol == NULL && msymbol == NULL) | |
dfcd3bfb | 717 | return 1; |
c906108c | 718 | |
c906108c SS |
719 | /* If the nearest symbol is too far away, don't print anything symbolic. */ |
720 | ||
721 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
722 | CORE_ADDR. But when we detect unsigned wraparound in the | |
723 | CORE_ADDR math, we ignore this test and print the offset, | |
724 | because addr+max_symbolic_offset has wrapped through the end | |
725 | of the address space back to the beginning, giving bogus comparison. */ | |
726 | if (addr > name_location + max_symbolic_offset | |
727 | && name_location + max_symbolic_offset > name_location) | |
dfcd3bfb | 728 | return 1; |
c906108c | 729 | |
dfcd3bfb JM |
730 | *offset = addr - name_location; |
731 | ||
732 | *name = xstrdup (name_temp); | |
c906108c | 733 | |
c906108c SS |
734 | if (print_symbol_filename) |
735 | { | |
736 | struct symtab_and_line sal; | |
737 | ||
738 | sal = find_pc_sect_line (addr, section, 0); | |
739 | ||
740 | if (sal.symtab) | |
dfcd3bfb | 741 | { |
05cba821 | 742 | *filename = xstrdup (symtab_to_filename_for_display (sal.symtab)); |
dfcd3bfb JM |
743 | *line = sal.line; |
744 | } | |
c906108c | 745 | } |
dfcd3bfb | 746 | return 0; |
c906108c SS |
747 | } |
748 | ||
c906108c SS |
749 | |
750 | /* Print address ADDR symbolically on STREAM. | |
751 | First print it as a number. Then perhaps print | |
752 | <SYMBOL + OFFSET> after the number. */ | |
753 | ||
754 | void | |
5af949e3 UW |
755 | print_address (struct gdbarch *gdbarch, |
756 | CORE_ADDR addr, struct ui_file *stream) | |
c906108c | 757 | { |
5af949e3 | 758 | fputs_filtered (paddress (gdbarch, addr), stream); |
22e722e1 | 759 | print_address_symbolic (gdbarch, addr, stream, asm_demangle, " "); |
c906108c SS |
760 | } |
761 | ||
2b28d209 PP |
762 | /* Return a prefix for instruction address: |
763 | "=> " for current instruction, else " ". */ | |
764 | ||
765 | const char * | |
766 | pc_prefix (CORE_ADDR addr) | |
767 | { | |
768 | if (has_stack_frames ()) | |
769 | { | |
770 | struct frame_info *frame; | |
771 | CORE_ADDR pc; | |
772 | ||
773 | frame = get_selected_frame (NULL); | |
ce406537 | 774 | if (get_frame_pc_if_available (frame, &pc) && pc == addr) |
2b28d209 PP |
775 | return "=> "; |
776 | } | |
777 | return " "; | |
778 | } | |
779 | ||
c906108c SS |
780 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE |
781 | controls whether to print the symbolic name "raw" or demangled. | |
9cb709b6 | 782 | Return non-zero if anything was printed; zero otherwise. */ |
c906108c | 783 | |
9cb709b6 | 784 | int |
edf0c1b7 TT |
785 | print_address_demangle (const struct value_print_options *opts, |
786 | struct gdbarch *gdbarch, CORE_ADDR addr, | |
5af949e3 | 787 | struct ui_file *stream, int do_demangle) |
c906108c | 788 | { |
1d51a733 | 789 | if (opts->addressprint) |
c906108c | 790 | { |
5af949e3 | 791 | fputs_filtered (paddress (gdbarch, addr), stream); |
22e722e1 | 792 | print_address_symbolic (gdbarch, addr, stream, do_demangle, " "); |
c906108c SS |
793 | } |
794 | else | |
795 | { | |
9cb709b6 | 796 | return print_address_symbolic (gdbarch, addr, stream, do_demangle, ""); |
c906108c | 797 | } |
9cb709b6 | 798 | return 1; |
c906108c SS |
799 | } |
800 | \f | |
801 | ||
c906108c SS |
802 | /* Examine data at address ADDR in format FMT. |
803 | Fetch it from memory and print on gdb_stdout. */ | |
804 | ||
805 | static void | |
5d3729b5 | 806 | do_examine (struct format_data fmt, struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 807 | { |
52f0bd74 AC |
808 | char format = 0; |
809 | char size; | |
810 | int count = 1; | |
c906108c | 811 | struct type *val_type = NULL; |
52f0bd74 AC |
812 | int i; |
813 | int maxelts; | |
79a45b7d | 814 | struct value_print_options opts; |
c906108c SS |
815 | |
816 | format = fmt.format; | |
817 | size = fmt.size; | |
818 | count = fmt.count; | |
5d3729b5 | 819 | next_gdbarch = gdbarch; |
c906108c | 820 | next_address = addr; |
c906108c | 821 | |
9a22f0d0 PM |
822 | /* Instruction format implies fetch single bytes |
823 | regardless of the specified size. | |
824 | The case of strings is handled in decode_format, only explicit | |
825 | size operator are not changed to 'b'. */ | |
826 | if (format == 'i') | |
c906108c SS |
827 | size = 'b'; |
828 | ||
5d3729b5 UW |
829 | if (size == 'a') |
830 | { | |
831 | /* Pick the appropriate size for an address. */ | |
832 | if (gdbarch_ptr_bit (next_gdbarch) == 64) | |
833 | size = 'g'; | |
834 | else if (gdbarch_ptr_bit (next_gdbarch) == 32) | |
835 | size = 'w'; | |
836 | else if (gdbarch_ptr_bit (next_gdbarch) == 16) | |
837 | size = 'h'; | |
838 | else | |
839 | /* Bad value for gdbarch_ptr_bit. */ | |
840 | internal_error (__FILE__, __LINE__, | |
841 | _("failed internal consistency check")); | |
842 | } | |
843 | ||
844 | if (size == 'b') | |
df4df182 | 845 | val_type = builtin_type (next_gdbarch)->builtin_int8; |
c906108c | 846 | else if (size == 'h') |
df4df182 | 847 | val_type = builtin_type (next_gdbarch)->builtin_int16; |
c906108c | 848 | else if (size == 'w') |
df4df182 | 849 | val_type = builtin_type (next_gdbarch)->builtin_int32; |
c906108c | 850 | else if (size == 'g') |
df4df182 | 851 | val_type = builtin_type (next_gdbarch)->builtin_int64; |
c906108c | 852 | |
9a22f0d0 PM |
853 | if (format == 's') |
854 | { | |
855 | struct type *char_type = NULL; | |
ad3bbd48 | 856 | |
9a22f0d0 PM |
857 | /* Search for "char16_t" or "char32_t" types or fall back to 8-bit char |
858 | if type is not found. */ | |
859 | if (size == 'h') | |
860 | char_type = builtin_type (next_gdbarch)->builtin_char16; | |
861 | else if (size == 'w') | |
862 | char_type = builtin_type (next_gdbarch)->builtin_char32; | |
863 | if (char_type) | |
864 | val_type = char_type; | |
865 | else | |
866 | { | |
867 | if (size != '\0' && size != 'b') | |
0df8b418 MS |
868 | warning (_("Unable to display strings with " |
869 | "size '%c', using 'b' instead."), size); | |
9a22f0d0 PM |
870 | size = 'b'; |
871 | val_type = builtin_type (next_gdbarch)->builtin_int8; | |
872 | } | |
873 | } | |
874 | ||
c906108c SS |
875 | maxelts = 8; |
876 | if (size == 'w') | |
877 | maxelts = 4; | |
878 | if (size == 'g') | |
879 | maxelts = 2; | |
880 | if (format == 's' || format == 'i') | |
881 | maxelts = 1; | |
882 | ||
79a45b7d TT |
883 | get_formatted_print_options (&opts, format); |
884 | ||
c906108c SS |
885 | /* Print as many objects as specified in COUNT, at most maxelts per line, |
886 | with the address of the next one at the start of each line. */ | |
887 | ||
888 | while (count > 0) | |
889 | { | |
890 | QUIT; | |
2b28d209 PP |
891 | if (format == 'i') |
892 | fputs_filtered (pc_prefix (next_address), gdb_stdout); | |
5af949e3 | 893 | print_address (next_gdbarch, next_address, gdb_stdout); |
c906108c SS |
894 | printf_filtered (":"); |
895 | for (i = maxelts; | |
896 | i > 0 && count > 0; | |
897 | i--, count--) | |
898 | { | |
899 | printf_filtered ("\t"); | |
900 | /* Note that print_formatted sets next_address for the next | |
901 | object. */ | |
902 | last_examine_address = next_address; | |
903 | ||
904 | if (last_examine_value) | |
905 | value_free (last_examine_value); | |
906 | ||
907 | /* The value to be displayed is not fetched greedily. | |
5d51a2db MR |
908 | Instead, to avoid the possibility of a fetched value not |
909 | being used, its retrieval is delayed until the print code | |
c5aa993b JM |
910 | uses it. When examining an instruction stream, the |
911 | disassembler will perform its own memory fetch using just | |
912 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
913 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
914 | is left with the byte sequence from the last complete | |
0df8b418 | 915 | instruction fetched from memory? */ |
00a4c844 | 916 | last_examine_value = value_at_lazy (val_type, next_address); |
c906108c SS |
917 | |
918 | if (last_examine_value) | |
919 | release_value (last_examine_value); | |
920 | ||
79a45b7d | 921 | print_formatted (last_examine_value, size, &opts, gdb_stdout); |
a4642986 MR |
922 | |
923 | /* Display any branch delay slots following the final insn. */ | |
924 | if (format == 'i' && count == 1) | |
925 | count += branch_delay_insns; | |
c906108c SS |
926 | } |
927 | printf_filtered ("\n"); | |
928 | gdb_flush (gdb_stdout); | |
929 | } | |
930 | } | |
931 | \f | |
932 | static void | |
fba45db2 | 933 | validate_format (struct format_data fmt, char *cmdname) |
c906108c SS |
934 | { |
935 | if (fmt.size != 0) | |
8a3fe4f8 | 936 | error (_("Size letters are meaningless in \"%s\" command."), cmdname); |
c906108c | 937 | if (fmt.count != 1) |
8a3fe4f8 | 938 | error (_("Item count other than 1 is meaningless in \"%s\" command."), |
c906108c | 939 | cmdname); |
ea37ba09 | 940 | if (fmt.format == 'i') |
8a3fe4f8 | 941 | error (_("Format letter \"%c\" is meaningless in \"%s\" command."), |
c906108c SS |
942 | fmt.format, cmdname); |
943 | } | |
944 | ||
675dcf4f | 945 | /* Evaluate string EXP as an expression in the current language and |
c5aa993b | 946 | print the resulting value. EXP may contain a format specifier as the |
675dcf4f | 947 | first argument ("/x myvar" for example, to print myvar in hex). */ |
c906108c SS |
948 | |
949 | static void | |
6f937416 | 950 | print_command_1 (const char *exp, int voidprint) |
c906108c SS |
951 | { |
952 | struct expression *expr; | |
27833de7 | 953 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
52f0bd74 | 954 | char format = 0; |
3d6d86c6 | 955 | struct value *val; |
c906108c | 956 | struct format_data fmt; |
c906108c | 957 | |
c906108c SS |
958 | if (exp && *exp == '/') |
959 | { | |
960 | exp++; | |
961 | fmt = decode_format (&exp, last_format, 0); | |
962 | validate_format (fmt, "print"); | |
963 | last_format = format = fmt.format; | |
964 | } | |
965 | else | |
966 | { | |
967 | fmt.count = 1; | |
968 | fmt.format = 0; | |
969 | fmt.size = 0; | |
a6bac58e | 970 | fmt.raw = 0; |
c906108c SS |
971 | } |
972 | ||
973 | if (exp && *exp) | |
974 | { | |
c906108c | 975 | expr = parse_expression (exp); |
27833de7 | 976 | make_cleanup (free_current_contents, &expr); |
c906108c | 977 | val = evaluate_expression (expr); |
c906108c SS |
978 | } |
979 | else | |
980 | val = access_value_history (0); | |
981 | ||
df407dfe AC |
982 | if (voidprint || (val && value_type (val) && |
983 | TYPE_CODE (value_type (val)) != TYPE_CODE_VOID)) | |
c906108c | 984 | { |
79a45b7d | 985 | struct value_print_options opts; |
c906108c SS |
986 | int histindex = record_latest_value (val); |
987 | ||
988 | if (histindex >= 0) | |
df407dfe | 989 | annotate_value_history_begin (histindex, value_type (val)); |
c906108c | 990 | else |
df407dfe | 991 | annotate_value_begin (value_type (val)); |
c906108c | 992 | |
e93a8774 | 993 | if (histindex >= 0) |
c5aa993b | 994 | printf_filtered ("$%d = ", histindex); |
c906108c SS |
995 | |
996 | if (histindex >= 0) | |
997 | annotate_value_history_value (); | |
998 | ||
79a45b7d | 999 | get_formatted_print_options (&opts, format); |
a6bac58e | 1000 | opts.raw = fmt.raw; |
79a45b7d TT |
1001 | |
1002 | print_formatted (val, fmt.size, &opts, gdb_stdout); | |
c906108c SS |
1003 | printf_filtered ("\n"); |
1004 | ||
1005 | if (histindex >= 0) | |
1006 | annotate_value_history_end (); | |
1007 | else | |
1008 | annotate_value_end (); | |
c906108c SS |
1009 | } |
1010 | ||
27833de7 | 1011 | do_cleanups (old_chain); |
c906108c SS |
1012 | } |
1013 | ||
c906108c | 1014 | static void |
fba45db2 | 1015 | print_command (char *exp, int from_tty) |
c906108c | 1016 | { |
e93a8774 | 1017 | print_command_1 (exp, 1); |
c906108c SS |
1018 | } |
1019 | ||
675dcf4f | 1020 | /* Same as print, except it doesn't print void results. */ |
c906108c | 1021 | static void |
fba45db2 | 1022 | call_command (char *exp, int from_tty) |
c906108c | 1023 | { |
e93a8774 | 1024 | print_command_1 (exp, 0); |
c906108c SS |
1025 | } |
1026 | ||
6f937416 PA |
1027 | /* Implementation of the "output" command. */ |
1028 | ||
1029 | static void | |
fba45db2 | 1030 | output_command (char *exp, int from_tty) |
6f937416 PA |
1031 | { |
1032 | output_command_const (exp, from_tty); | |
1033 | } | |
1034 | ||
1035 | /* Like output_command, but takes a const string as argument. */ | |
1036 | ||
1037 | void | |
1038 | output_command_const (const char *exp, int from_tty) | |
c906108c SS |
1039 | { |
1040 | struct expression *expr; | |
52f0bd74 AC |
1041 | struct cleanup *old_chain; |
1042 | char format = 0; | |
3d6d86c6 | 1043 | struct value *val; |
c906108c | 1044 | struct format_data fmt; |
79a45b7d | 1045 | struct value_print_options opts; |
c906108c | 1046 | |
777ea8f1 | 1047 | fmt.size = 0; |
a6bac58e | 1048 | fmt.raw = 0; |
777ea8f1 | 1049 | |
c906108c SS |
1050 | if (exp && *exp == '/') |
1051 | { | |
1052 | exp++; | |
1053 | fmt = decode_format (&exp, 0, 0); | |
1054 | validate_format (fmt, "output"); | |
1055 | format = fmt.format; | |
1056 | } | |
1057 | ||
1058 | expr = parse_expression (exp); | |
c13c43fd | 1059 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
1060 | |
1061 | val = evaluate_expression (expr); | |
1062 | ||
df407dfe | 1063 | annotate_value_begin (value_type (val)); |
c906108c | 1064 | |
79a45b7d | 1065 | get_formatted_print_options (&opts, format); |
a6bac58e | 1066 | opts.raw = fmt.raw; |
79a45b7d | 1067 | print_formatted (val, fmt.size, &opts, gdb_stdout); |
c906108c SS |
1068 | |
1069 | annotate_value_end (); | |
1070 | ||
2acceee2 JM |
1071 | wrap_here (""); |
1072 | gdb_flush (gdb_stdout); | |
1073 | ||
c906108c SS |
1074 | do_cleanups (old_chain); |
1075 | } | |
1076 | ||
c906108c | 1077 | static void |
fba45db2 | 1078 | set_command (char *exp, int from_tty) |
c906108c SS |
1079 | { |
1080 | struct expression *expr = parse_expression (exp); | |
52f0bd74 | 1081 | struct cleanup *old_chain = |
c13c43fd | 1082 | make_cleanup (free_current_contents, &expr); |
ad3bbd48 | 1083 | |
0ece64fd TG |
1084 | if (expr->nelts >= 1) |
1085 | switch (expr->elts[0].opcode) | |
1086 | { | |
1087 | case UNOP_PREINCREMENT: | |
1088 | case UNOP_POSTINCREMENT: | |
1089 | case UNOP_PREDECREMENT: | |
1090 | case UNOP_POSTDECREMENT: | |
1091 | case BINOP_ASSIGN: | |
1092 | case BINOP_ASSIGN_MODIFY: | |
1093 | case BINOP_COMMA: | |
1094 | break; | |
1095 | default: | |
1096 | warning | |
1097 | (_("Expression is not an assignment (and might have no effect)")); | |
1098 | } | |
52b3699b | 1099 | |
c906108c SS |
1100 | evaluate_expression (expr); |
1101 | do_cleanups (old_chain); | |
1102 | } | |
1103 | ||
c906108c | 1104 | static void |
fba45db2 | 1105 | sym_info (char *arg, int from_tty) |
c906108c SS |
1106 | { |
1107 | struct minimal_symbol *msymbol; | |
c5aa993b JM |
1108 | struct objfile *objfile; |
1109 | struct obj_section *osect; | |
c5aa993b JM |
1110 | CORE_ADDR addr, sect_addr; |
1111 | int matches = 0; | |
1112 | unsigned int offset; | |
c906108c SS |
1113 | |
1114 | if (!arg) | |
e2e0b3e5 | 1115 | error_no_arg (_("address")); |
c906108c SS |
1116 | |
1117 | addr = parse_and_eval_address (arg); | |
1118 | ALL_OBJSECTIONS (objfile, osect) | |
c5aa993b | 1119 | { |
94277a38 DJ |
1120 | /* Only process each object file once, even if there's a separate |
1121 | debug file. */ | |
1122 | if (objfile->separate_debug_objfile_backlink) | |
1123 | continue; | |
1124 | ||
714835d5 | 1125 | sect_addr = overlay_mapped_address (addr, osect); |
c906108c | 1126 | |
f1f6aadf PA |
1127 | if (obj_section_addr (osect) <= sect_addr |
1128 | && sect_addr < obj_section_endaddr (osect) | |
7cbd4a93 TT |
1129 | && (msymbol |
1130 | = lookup_minimal_symbol_by_pc_section (sect_addr, osect).minsym)) | |
c5aa993b | 1131 | { |
c14c28ba | 1132 | const char *obj_name, *mapped, *sec_name, *msym_name; |
e2fd701e DE |
1133 | char *loc_string; |
1134 | struct cleanup *old_chain; | |
c14c28ba | 1135 | |
c5aa993b JM |
1136 | matches = 1; |
1137 | offset = sect_addr - SYMBOL_VALUE_ADDRESS (msymbol); | |
c14c28ba PP |
1138 | mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped"); |
1139 | sec_name = osect->the_bfd_section->name; | |
1140 | msym_name = SYMBOL_PRINT_NAME (msymbol); | |
1141 | ||
e2fd701e DE |
1142 | /* Don't print the offset if it is zero. |
1143 | We assume there's no need to handle i18n of "sym + offset". */ | |
1144 | if (offset) | |
549ba0f8 | 1145 | loc_string = xstrprintf ("%s + %u", msym_name, offset); |
e2fd701e | 1146 | else |
549ba0f8 | 1147 | loc_string = xstrprintf ("%s", msym_name); |
e2fd701e DE |
1148 | |
1149 | /* Use a cleanup to free loc_string in case the user quits | |
1150 | a pagination request inside printf_filtered. */ | |
1151 | old_chain = make_cleanup (xfree, loc_string); | |
1152 | ||
4262abfb JK |
1153 | gdb_assert (osect->objfile && objfile_name (osect->objfile)); |
1154 | obj_name = objfile_name (osect->objfile); | |
c14c28ba PP |
1155 | |
1156 | if (MULTI_OBJFILE_P ()) | |
1157 | if (pc_in_unmapped_range (addr, osect)) | |
1158 | if (section_is_overlay (osect)) | |
e2fd701e | 1159 | printf_filtered (_("%s in load address range of " |
c14c28ba | 1160 | "%s overlay section %s of %s\n"), |
e2fd701e | 1161 | loc_string, mapped, sec_name, obj_name); |
c14c28ba | 1162 | else |
e2fd701e | 1163 | printf_filtered (_("%s in load address range of " |
c14c28ba | 1164 | "section %s of %s\n"), |
e2fd701e | 1165 | loc_string, sec_name, obj_name); |
c14c28ba PP |
1166 | else |
1167 | if (section_is_overlay (osect)) | |
e2fd701e DE |
1168 | printf_filtered (_("%s in %s overlay section %s of %s\n"), |
1169 | loc_string, mapped, sec_name, obj_name); | |
c14c28ba | 1170 | else |
e2fd701e DE |
1171 | printf_filtered (_("%s in section %s of %s\n"), |
1172 | loc_string, sec_name, obj_name); | |
c5aa993b | 1173 | else |
c14c28ba PP |
1174 | if (pc_in_unmapped_range (addr, osect)) |
1175 | if (section_is_overlay (osect)) | |
e2fd701e | 1176 | printf_filtered (_("%s in load address range of %s overlay " |
c14c28ba | 1177 | "section %s\n"), |
e2fd701e | 1178 | loc_string, mapped, sec_name); |
c14c28ba | 1179 | else |
e2fd701e DE |
1180 | printf_filtered (_("%s in load address range of section %s\n"), |
1181 | loc_string, sec_name); | |
c14c28ba PP |
1182 | else |
1183 | if (section_is_overlay (osect)) | |
e2fd701e DE |
1184 | printf_filtered (_("%s in %s overlay section %s\n"), |
1185 | loc_string, mapped, sec_name); | |
c14c28ba | 1186 | else |
e2fd701e DE |
1187 | printf_filtered (_("%s in section %s\n"), |
1188 | loc_string, sec_name); | |
1189 | ||
1190 | do_cleanups (old_chain); | |
c5aa993b JM |
1191 | } |
1192 | } | |
c906108c | 1193 | if (matches == 0) |
a3f17187 | 1194 | printf_filtered (_("No symbol matches %s.\n"), arg); |
c906108c SS |
1195 | } |
1196 | ||
c906108c | 1197 | static void |
fba45db2 | 1198 | address_info (char *exp, int from_tty) |
c906108c | 1199 | { |
768a979c UW |
1200 | struct gdbarch *gdbarch; |
1201 | int regno; | |
52f0bd74 | 1202 | struct symbol *sym; |
7c7b6655 | 1203 | struct bound_minimal_symbol msymbol; |
52f0bd74 | 1204 | long val; |
714835d5 | 1205 | struct obj_section *section; |
08922a10 | 1206 | CORE_ADDR load_addr, context_pc = 0; |
1993b719 | 1207 | struct field_of_this_result is_a_field_of_this; |
c906108c SS |
1208 | |
1209 | if (exp == 0) | |
8a3fe4f8 | 1210 | error (_("Argument required.")); |
c906108c | 1211 | |
08922a10 | 1212 | sym = lookup_symbol (exp, get_selected_block (&context_pc), VAR_DOMAIN, |
2570f2b7 | 1213 | &is_a_field_of_this); |
c906108c SS |
1214 | if (sym == NULL) |
1215 | { | |
1993b719 | 1216 | if (is_a_field_of_this.type != NULL) |
c906108c SS |
1217 | { |
1218 | printf_filtered ("Symbol \""); | |
1219 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1220 | current_language->la_language, DMGL_ANSI); | |
e2b23ee9 AF |
1221 | printf_filtered ("\" is a field of the local class variable "); |
1222 | if (current_language->la_language == language_objc) | |
2625d86c | 1223 | printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */ |
e2b23ee9 | 1224 | else |
2625d86c | 1225 | printf_filtered ("`this'\n"); |
c906108c SS |
1226 | return; |
1227 | } | |
1228 | ||
7c7b6655 | 1229 | msymbol = lookup_bound_minimal_symbol (exp); |
c906108c | 1230 | |
7c7b6655 | 1231 | if (msymbol.minsym != NULL) |
c906108c | 1232 | { |
7c7b6655 | 1233 | struct objfile *objfile = msymbol.objfile; |
e27d198c TT |
1234 | |
1235 | gdbarch = get_objfile_arch (objfile); | |
7c7b6655 | 1236 | load_addr = SYMBOL_VALUE_ADDRESS (msymbol.minsym); |
c906108c SS |
1237 | |
1238 | printf_filtered ("Symbol \""); | |
1239 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1240 | current_language->la_language, DMGL_ANSI); | |
1241 | printf_filtered ("\" is at "); | |
5af949e3 | 1242 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
c906108c | 1243 | printf_filtered (" in a file compiled without debugging"); |
7c7b6655 | 1244 | section = SYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
c906108c SS |
1245 | if (section_is_overlay (section)) |
1246 | { | |
1247 | load_addr = overlay_unmapped_address (load_addr, section); | |
1248 | printf_filtered (",\n -- loaded at "); | |
5af949e3 | 1249 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1250 | printf_filtered (" in overlay section %s", |
1251 | section->the_bfd_section->name); | |
c906108c SS |
1252 | } |
1253 | printf_filtered (".\n"); | |
1254 | } | |
1255 | else | |
8a3fe4f8 | 1256 | error (_("No symbol \"%s\" in current context."), exp); |
c906108c SS |
1257 | return; |
1258 | } | |
1259 | ||
1260 | printf_filtered ("Symbol \""); | |
3567439c | 1261 | fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym), |
c906108c SS |
1262 | current_language->la_language, DMGL_ANSI); |
1263 | printf_filtered ("\" is "); | |
c5aa993b | 1264 | val = SYMBOL_VALUE (sym); |
e27d198c | 1265 | section = SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym), sym); |
768a979c | 1266 | gdbarch = get_objfile_arch (SYMBOL_SYMTAB (sym)->objfile); |
c906108c | 1267 | |
24d6c2a0 TT |
1268 | if (SYMBOL_COMPUTED_OPS (sym) != NULL) |
1269 | { | |
1270 | SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, context_pc, | |
1271 | gdb_stdout); | |
1272 | printf_filtered (".\n"); | |
1273 | return; | |
1274 | } | |
1275 | ||
c906108c SS |
1276 | switch (SYMBOL_CLASS (sym)) |
1277 | { | |
1278 | case LOC_CONST: | |
1279 | case LOC_CONST_BYTES: | |
1280 | printf_filtered ("constant"); | |
1281 | break; | |
1282 | ||
1283 | case LOC_LABEL: | |
1284 | printf_filtered ("a label at address "); | |
5af949e3 UW |
1285 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
1286 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); | |
c906108c SS |
1287 | if (section_is_overlay (section)) |
1288 | { | |
1289 | load_addr = overlay_unmapped_address (load_addr, section); | |
1290 | printf_filtered (",\n -- loaded at "); | |
5af949e3 | 1291 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1292 | printf_filtered (" in overlay section %s", |
1293 | section->the_bfd_section->name); | |
c906108c SS |
1294 | } |
1295 | break; | |
1296 | ||
4c2df51b | 1297 | case LOC_COMPUTED: |
24d6c2a0 | 1298 | gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method")); |
4c2df51b | 1299 | |
c906108c | 1300 | case LOC_REGISTER: |
768a979c UW |
1301 | /* GDBARCH is the architecture associated with the objfile the symbol |
1302 | is defined in; the target architecture may be different, and may | |
1303 | provide additional registers. However, we do not know the target | |
1304 | architecture at this point. We assume the objfile architecture | |
1305 | will contain all the standard registers that occur in debug info | |
1306 | in that objfile. */ | |
1307 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
1308 | ||
2a2d4dc3 AS |
1309 | if (SYMBOL_IS_ARGUMENT (sym)) |
1310 | printf_filtered (_("an argument in register %s"), | |
768a979c | 1311 | gdbarch_register_name (gdbarch, regno)); |
2a2d4dc3 AS |
1312 | else |
1313 | printf_filtered (_("a variable in register %s"), | |
768a979c | 1314 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1315 | break; |
1316 | ||
1317 | case LOC_STATIC: | |
a3f17187 | 1318 | printf_filtered (_("static storage at address ")); |
5af949e3 UW |
1319 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
1320 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); | |
c906108c SS |
1321 | if (section_is_overlay (section)) |
1322 | { | |
1323 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1324 | printf_filtered (_(",\n -- loaded at ")); |
5af949e3 | 1325 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1326 | printf_filtered (_(" in overlay section %s"), |
1327 | section->the_bfd_section->name); | |
c906108c SS |
1328 | } |
1329 | break; | |
1330 | ||
c906108c | 1331 | case LOC_REGPARM_ADDR: |
768a979c UW |
1332 | /* Note comment at LOC_REGISTER. */ |
1333 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
675dcf4f | 1334 | printf_filtered (_("address of an argument in register %s"), |
768a979c | 1335 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1336 | break; |
1337 | ||
1338 | case LOC_ARG: | |
a3f17187 | 1339 | printf_filtered (_("an argument at offset %ld"), val); |
c906108c SS |
1340 | break; |
1341 | ||
c906108c | 1342 | case LOC_LOCAL: |
a3f17187 | 1343 | printf_filtered (_("a local variable at frame offset %ld"), val); |
c906108c SS |
1344 | break; |
1345 | ||
1346 | case LOC_REF_ARG: | |
a3f17187 | 1347 | printf_filtered (_("a reference argument at offset %ld"), val); |
c906108c SS |
1348 | break; |
1349 | ||
c906108c | 1350 | case LOC_TYPEDEF: |
a3f17187 | 1351 | printf_filtered (_("a typedef")); |
c906108c SS |
1352 | break; |
1353 | ||
1354 | case LOC_BLOCK: | |
a3f17187 | 1355 | printf_filtered (_("a function at address ")); |
675dcf4f | 1356 | load_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); |
5af949e3 | 1357 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
c906108c SS |
1358 | if (section_is_overlay (section)) |
1359 | { | |
1360 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1361 | printf_filtered (_(",\n -- loaded at ")); |
5af949e3 | 1362 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1363 | printf_filtered (_(" in overlay section %s"), |
1364 | section->the_bfd_section->name); | |
c906108c SS |
1365 | } |
1366 | break; | |
1367 | ||
1368 | case LOC_UNRESOLVED: | |
1369 | { | |
e27d198c | 1370 | struct bound_minimal_symbol msym; |
c906108c | 1371 | |
e27d198c TT |
1372 | msym = lookup_minimal_symbol_and_objfile (SYMBOL_LINKAGE_NAME (sym)); |
1373 | if (msym.minsym == NULL) | |
c906108c SS |
1374 | printf_filtered ("unresolved"); |
1375 | else | |
1376 | { | |
e27d198c TT |
1377 | section = SYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
1378 | load_addr = SYMBOL_VALUE_ADDRESS (msym.minsym); | |
e0740f77 JK |
1379 | |
1380 | if (section | |
1381 | && (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0) | |
1382 | printf_filtered (_("a thread-local variable at offset %s " | |
1383 | "in the thread-local storage for `%s'"), | |
5af949e3 | 1384 | paddress (gdbarch, load_addr), |
4262abfb | 1385 | objfile_name (section->objfile)); |
e0740f77 | 1386 | else |
c906108c | 1387 | { |
e0740f77 | 1388 | printf_filtered (_("static storage at address ")); |
5af949e3 | 1389 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
e0740f77 JK |
1390 | if (section_is_overlay (section)) |
1391 | { | |
1392 | load_addr = overlay_unmapped_address (load_addr, section); | |
1393 | printf_filtered (_(",\n -- loaded at ")); | |
5af949e3 | 1394 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
e0740f77 JK |
1395 | printf_filtered (_(" in overlay section %s"), |
1396 | section->the_bfd_section->name); | |
1397 | } | |
c906108c SS |
1398 | } |
1399 | } | |
1400 | } | |
1401 | break; | |
1402 | ||
c906108c | 1403 | case LOC_OPTIMIZED_OUT: |
a3f17187 | 1404 | printf_filtered (_("optimized out")); |
c906108c | 1405 | break; |
c5aa993b | 1406 | |
c906108c | 1407 | default: |
a3f17187 | 1408 | printf_filtered (_("of unknown (botched) type")); |
c906108c SS |
1409 | break; |
1410 | } | |
1411 | printf_filtered (".\n"); | |
1412 | } | |
1413 | \f | |
675dcf4f MK |
1414 | |
1415 | static void | |
fba45db2 | 1416 | x_command (char *exp, int from_tty) |
c906108c SS |
1417 | { |
1418 | struct expression *expr; | |
1419 | struct format_data fmt; | |
1420 | struct cleanup *old_chain; | |
1421 | struct value *val; | |
1422 | ||
a6bac58e | 1423 | fmt.format = last_format ? last_format : 'x'; |
c906108c SS |
1424 | fmt.size = last_size; |
1425 | fmt.count = 1; | |
a6bac58e | 1426 | fmt.raw = 0; |
c906108c SS |
1427 | |
1428 | if (exp && *exp == '/') | |
1429 | { | |
6f937416 PA |
1430 | const char *tmp = exp + 1; |
1431 | ||
1432 | fmt = decode_format (&tmp, last_format, last_size); | |
1433 | exp = (char *) tmp; | |
c906108c SS |
1434 | } |
1435 | ||
1436 | /* If we have an expression, evaluate it and use it as the address. */ | |
1437 | ||
1438 | if (exp != 0 && *exp != 0) | |
1439 | { | |
1440 | expr = parse_expression (exp); | |
675dcf4f MK |
1441 | /* Cause expression not to be there any more if this command is |
1442 | repeated with Newline. But don't clobber a user-defined | |
1443 | command's definition. */ | |
c906108c SS |
1444 | if (from_tty) |
1445 | *exp = 0; | |
c13c43fd | 1446 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c | 1447 | val = evaluate_expression (expr); |
df407dfe | 1448 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_REF) |
e1c34c5d | 1449 | val = coerce_ref (val); |
c906108c | 1450 | /* In rvalue contexts, such as this, functions are coerced into |
c5aa993b | 1451 | pointers to functions. This makes "x/i main" work. */ |
c0d8fd9a | 1452 | if (/* last_format == 'i' && */ |
df407dfe | 1453 | TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC |
c5aa993b | 1454 | && VALUE_LVAL (val) == lval_memory) |
42ae5230 | 1455 | next_address = value_address (val); |
c906108c | 1456 | else |
1aa20aa8 | 1457 | next_address = value_as_address (val); |
5d3729b5 UW |
1458 | |
1459 | next_gdbarch = expr->gdbarch; | |
c906108c SS |
1460 | do_cleanups (old_chain); |
1461 | } | |
1462 | ||
5d3729b5 UW |
1463 | if (!next_gdbarch) |
1464 | error_no_arg (_("starting display address")); | |
1465 | ||
1466 | do_examine (fmt, next_gdbarch, next_address); | |
c906108c | 1467 | |
675dcf4f | 1468 | /* If the examine succeeds, we remember its size and format for next |
9a22f0d0 PM |
1469 | time. Set last_size to 'b' for strings. */ |
1470 | if (fmt.format == 's') | |
1471 | last_size = 'b'; | |
1472 | else | |
1473 | last_size = fmt.size; | |
c906108c SS |
1474 | last_format = fmt.format; |
1475 | ||
0df8b418 | 1476 | /* Set a couple of internal variables if appropriate. */ |
c906108c SS |
1477 | if (last_examine_value) |
1478 | { | |
1479 | /* Make last address examined available to the user as $_. Use | |
c5aa993b | 1480 | the correct pointer type. */ |
4478b372 | 1481 | struct type *pointer_type |
df407dfe | 1482 | = lookup_pointer_type (value_type (last_examine_value)); |
c906108c | 1483 | set_internalvar (lookup_internalvar ("_"), |
4478b372 JB |
1484 | value_from_pointer (pointer_type, |
1485 | last_examine_address)); | |
c5aa993b | 1486 | |
675dcf4f MK |
1487 | /* Make contents of last address examined available to the user |
1488 | as $__. If the last value has not been fetched from memory | |
1489 | then don't fetch it now; instead mark it by voiding the $__ | |
1490 | variable. */ | |
d69fe07e | 1491 | if (value_lazy (last_examine_value)) |
4fa62494 | 1492 | clear_internalvar (lookup_internalvar ("__")); |
c906108c SS |
1493 | else |
1494 | set_internalvar (lookup_internalvar ("__"), last_examine_value); | |
1495 | } | |
1496 | } | |
c906108c | 1497 | \f |
c5aa993b | 1498 | |
c906108c SS |
1499 | /* Add an expression to the auto-display chain. |
1500 | Specify the expression. */ | |
1501 | ||
1502 | static void | |
6f937416 | 1503 | display_command (char *arg, int from_tty) |
c906108c SS |
1504 | { |
1505 | struct format_data fmt; | |
52f0bd74 AC |
1506 | struct expression *expr; |
1507 | struct display *new; | |
c906108c | 1508 | int display_it = 1; |
6f937416 | 1509 | const char *exp = arg; |
c906108c SS |
1510 | |
1511 | #if defined(TUI) | |
021e7609 AC |
1512 | /* NOTE: cagney/2003-02-13 The `tui_active' was previously |
1513 | `tui_version'. */ | |
fd33e6cb | 1514 | if (tui_active && exp != NULL && *exp == '$') |
080ce8c0 | 1515 | display_it = (tui_set_layout_for_display_command (exp) == TUI_FAILURE); |
c906108c SS |
1516 | #endif |
1517 | ||
1518 | if (display_it) | |
1519 | { | |
1520 | if (exp == 0) | |
1521 | { | |
1522 | do_displays (); | |
1523 | return; | |
1524 | } | |
1525 | ||
1526 | if (*exp == '/') | |
1527 | { | |
1528 | exp++; | |
1529 | fmt = decode_format (&exp, 0, 0); | |
1530 | if (fmt.size && fmt.format == 0) | |
1531 | fmt.format = 'x'; | |
1532 | if (fmt.format == 'i' || fmt.format == 's') | |
1533 | fmt.size = 'b'; | |
1534 | } | |
1535 | else | |
1536 | { | |
1537 | fmt.format = 0; | |
1538 | fmt.size = 0; | |
1539 | fmt.count = 0; | |
a6bac58e | 1540 | fmt.raw = 0; |
c906108c SS |
1541 | } |
1542 | ||
a3247a22 | 1543 | innermost_block = NULL; |
c906108c SS |
1544 | expr = parse_expression (exp); |
1545 | ||
1546 | new = (struct display *) xmalloc (sizeof (struct display)); | |
1547 | ||
fa8a61dc | 1548 | new->exp_string = xstrdup (exp); |
c906108c SS |
1549 | new->exp = expr; |
1550 | new->block = innermost_block; | |
6c95b8df | 1551 | new->pspace = current_program_space; |
c906108c SS |
1552 | new->next = display_chain; |
1553 | new->number = ++display_number; | |
1554 | new->format = fmt; | |
b5de0fa7 | 1555 | new->enabled_p = 1; |
c906108c SS |
1556 | display_chain = new; |
1557 | ||
1558 | if (from_tty && target_has_execution) | |
1559 | do_one_display (new); | |
1560 | ||
1561 | dont_repeat (); | |
1562 | } | |
1563 | } | |
1564 | ||
1565 | static void | |
fba45db2 | 1566 | free_display (struct display *d) |
c906108c | 1567 | { |
fa8a61dc | 1568 | xfree (d->exp_string); |
b8c9b27d KB |
1569 | xfree (d->exp); |
1570 | xfree (d); | |
c906108c SS |
1571 | } |
1572 | ||
675dcf4f MK |
1573 | /* Clear out the display_chain. Done when new symtabs are loaded, |
1574 | since this invalidates the types stored in many expressions. */ | |
c906108c SS |
1575 | |
1576 | void | |
fba45db2 | 1577 | clear_displays (void) |
c906108c | 1578 | { |
52f0bd74 | 1579 | struct display *d; |
c906108c SS |
1580 | |
1581 | while ((d = display_chain) != NULL) | |
1582 | { | |
c906108c | 1583 | display_chain = d->next; |
fa8a61dc | 1584 | free_display (d); |
c906108c SS |
1585 | } |
1586 | } | |
1587 | ||
3c3fe74c | 1588 | /* Delete the auto-display DISPLAY. */ |
c906108c SS |
1589 | |
1590 | static void | |
3c3fe74c | 1591 | delete_display (struct display *display) |
c906108c | 1592 | { |
3c3fe74c | 1593 | struct display *d; |
c906108c | 1594 | |
3c3fe74c | 1595 | gdb_assert (display != NULL); |
c906108c | 1596 | |
3c3fe74c PA |
1597 | if (display_chain == display) |
1598 | display_chain = display->next; | |
1599 | ||
1600 | ALL_DISPLAYS (d) | |
1601 | if (d->next == display) | |
c906108c | 1602 | { |
3c3fe74c PA |
1603 | d->next = display->next; |
1604 | break; | |
c906108c | 1605 | } |
3c3fe74c PA |
1606 | |
1607 | free_display (display); | |
c906108c SS |
1608 | } |
1609 | ||
c9174737 PA |
1610 | /* Call FUNCTION on each of the displays whose numbers are given in |
1611 | ARGS. DATA is passed unmodified to FUNCTION. */ | |
c906108c SS |
1612 | |
1613 | static void | |
c9174737 PA |
1614 | map_display_numbers (char *args, |
1615 | void (*function) (struct display *, | |
1616 | void *), | |
1617 | void *data) | |
c906108c | 1618 | { |
197f0a60 | 1619 | struct get_number_or_range_state state; |
c9174737 | 1620 | int num; |
c906108c | 1621 | |
c9174737 PA |
1622 | if (args == NULL) |
1623 | error_no_arg (_("one or more display numbers")); | |
c906108c | 1624 | |
197f0a60 | 1625 | init_number_or_range (&state, args); |
c9174737 | 1626 | |
197f0a60 | 1627 | while (!state.finished) |
c906108c | 1628 | { |
197f0a60 | 1629 | char *p = state.string; |
c906108c | 1630 | |
197f0a60 | 1631 | num = get_number_or_range (&state); |
3c3fe74c PA |
1632 | if (num == 0) |
1633 | warning (_("bad display number at or near '%s'"), p); | |
1634 | else | |
1635 | { | |
c9174737 | 1636 | struct display *d, *tmp; |
c906108c | 1637 | |
c9174737 | 1638 | ALL_DISPLAYS_SAFE (d, tmp) |
3c3fe74c PA |
1639 | if (d->number == num) |
1640 | break; | |
1641 | if (d == NULL) | |
1642 | printf_unfiltered (_("No display number %d.\n"), num); | |
1643 | else | |
c9174737 | 1644 | function (d, data); |
3c3fe74c | 1645 | } |
c906108c | 1646 | } |
c9174737 PA |
1647 | } |
1648 | ||
1649 | /* Callback for map_display_numbers, that deletes a display. */ | |
1650 | ||
1651 | static void | |
1652 | do_delete_display (struct display *d, void *data) | |
1653 | { | |
1654 | delete_display (d); | |
1655 | } | |
1656 | ||
1657 | /* "undisplay" command. */ | |
1658 | ||
1659 | static void | |
1660 | undisplay_command (char *args, int from_tty) | |
1661 | { | |
c9174737 PA |
1662 | if (args == NULL) |
1663 | { | |
1664 | if (query (_("Delete all auto-display expressions? "))) | |
1665 | clear_displays (); | |
1666 | dont_repeat (); | |
1667 | return; | |
1668 | } | |
1669 | ||
1670 | map_display_numbers (args, do_delete_display, NULL); | |
c906108c SS |
1671 | dont_repeat (); |
1672 | } | |
1673 | ||
1674 | /* Display a single auto-display. | |
1675 | Do nothing if the display cannot be printed in the current context, | |
0df8b418 | 1676 | or if the display is disabled. */ |
c906108c SS |
1677 | |
1678 | static void | |
fba45db2 | 1679 | do_one_display (struct display *d) |
c906108c | 1680 | { |
af6e93b2 | 1681 | struct cleanup *old_chain; |
c906108c SS |
1682 | int within_current_scope; |
1683 | ||
b5de0fa7 | 1684 | if (d->enabled_p == 0) |
c906108c SS |
1685 | return; |
1686 | ||
704e9165 UW |
1687 | /* The expression carries the architecture that was used at parse time. |
1688 | This is a problem if the expression depends on architecture features | |
1689 | (e.g. register numbers), and the current architecture is now different. | |
1690 | For example, a display statement like "display/i $pc" is expected to | |
1691 | display the PC register of the current architecture, not the arch at | |
1692 | the time the display command was given. Therefore, we re-parse the | |
1693 | expression if the current architecture has changed. */ | |
1694 | if (d->exp != NULL && d->exp->gdbarch != get_current_arch ()) | |
1695 | { | |
1696 | xfree (d->exp); | |
1697 | d->exp = NULL; | |
1698 | d->block = NULL; | |
1699 | } | |
1700 | ||
a3247a22 PP |
1701 | if (d->exp == NULL) |
1702 | { | |
1703 | volatile struct gdb_exception ex; | |
ad3bbd48 | 1704 | |
a3247a22 PP |
1705 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1706 | { | |
1707 | innermost_block = NULL; | |
1708 | d->exp = parse_expression (d->exp_string); | |
1709 | d->block = innermost_block; | |
1710 | } | |
1711 | if (ex.reason < 0) | |
1712 | { | |
1713 | /* Can't re-parse the expression. Disable this display item. */ | |
1714 | d->enabled_p = 0; | |
1715 | warning (_("Unable to display \"%s\": %s"), | |
1716 | d->exp_string, ex.message); | |
1717 | return; | |
1718 | } | |
1719 | } | |
1720 | ||
c906108c | 1721 | if (d->block) |
6c95b8df PA |
1722 | { |
1723 | if (d->pspace == current_program_space) | |
1724 | within_current_scope = contained_in (get_selected_block (0), d->block); | |
1725 | else | |
1726 | within_current_scope = 0; | |
1727 | } | |
c906108c SS |
1728 | else |
1729 | within_current_scope = 1; | |
1730 | if (!within_current_scope) | |
1731 | return; | |
1732 | ||
9d8fa392 | 1733 | old_chain = make_cleanup_restore_integer (¤t_display_number); |
c906108c SS |
1734 | current_display_number = d->number; |
1735 | ||
1736 | annotate_display_begin (); | |
1737 | printf_filtered ("%d", d->number); | |
1738 | annotate_display_number_end (); | |
1739 | printf_filtered (": "); | |
1740 | if (d->format.size) | |
1741 | { | |
9d8fa392 | 1742 | volatile struct gdb_exception ex; |
c906108c SS |
1743 | |
1744 | annotate_display_format (); | |
1745 | ||
1746 | printf_filtered ("x/"); | |
1747 | if (d->format.count != 1) | |
1748 | printf_filtered ("%d", d->format.count); | |
1749 | printf_filtered ("%c", d->format.format); | |
1750 | if (d->format.format != 'i' && d->format.format != 's') | |
1751 | printf_filtered ("%c", d->format.size); | |
1752 | printf_filtered (" "); | |
1753 | ||
1754 | annotate_display_expression (); | |
1755 | ||
fa8a61dc | 1756 | puts_filtered (d->exp_string); |
c906108c SS |
1757 | annotate_display_expression_end (); |
1758 | ||
6a2eb474 | 1759 | if (d->format.count != 1 || d->format.format == 'i') |
c906108c SS |
1760 | printf_filtered ("\n"); |
1761 | else | |
1762 | printf_filtered (" "); | |
c5aa993b | 1763 | |
c906108c SS |
1764 | annotate_display_value (); |
1765 | ||
9d8fa392 PA |
1766 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
1767 | { | |
1768 | struct value *val; | |
1769 | CORE_ADDR addr; | |
1770 | ||
1771 | val = evaluate_expression (d->exp); | |
1772 | addr = value_as_address (val); | |
1773 | if (d->format.format == 'i') | |
1774 | addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr); | |
1775 | do_examine (d->format, d->exp->gdbarch, addr); | |
1776 | } | |
1777 | if (ex.reason < 0) | |
1778 | fprintf_filtered (gdb_stdout, _("<error: %s>\n"), ex.message); | |
c906108c SS |
1779 | } |
1780 | else | |
1781 | { | |
79a45b7d | 1782 | struct value_print_options opts; |
9d8fa392 | 1783 | volatile struct gdb_exception ex; |
79a45b7d | 1784 | |
c906108c SS |
1785 | annotate_display_format (); |
1786 | ||
1787 | if (d->format.format) | |
1788 | printf_filtered ("/%c ", d->format.format); | |
1789 | ||
1790 | annotate_display_expression (); | |
1791 | ||
fa8a61dc | 1792 | puts_filtered (d->exp_string); |
c906108c SS |
1793 | annotate_display_expression_end (); |
1794 | ||
1795 | printf_filtered (" = "); | |
1796 | ||
1797 | annotate_display_expression (); | |
1798 | ||
79a45b7d | 1799 | get_formatted_print_options (&opts, d->format.format); |
a6bac58e | 1800 | opts.raw = d->format.raw; |
9d8fa392 PA |
1801 | |
1802 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
1803 | { | |
1804 | struct value *val; | |
1805 | ||
1806 | val = evaluate_expression (d->exp); | |
1807 | print_formatted (val, d->format.size, &opts, gdb_stdout); | |
1808 | } | |
1809 | if (ex.reason < 0) | |
1810 | fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.message); | |
c906108c SS |
1811 | printf_filtered ("\n"); |
1812 | } | |
1813 | ||
1814 | annotate_display_end (); | |
1815 | ||
1816 | gdb_flush (gdb_stdout); | |
9d8fa392 | 1817 | do_cleanups (old_chain); |
c906108c SS |
1818 | } |
1819 | ||
1820 | /* Display all of the values on the auto-display chain which can be | |
1821 | evaluated in the current scope. */ | |
1822 | ||
1823 | void | |
fba45db2 | 1824 | do_displays (void) |
c906108c | 1825 | { |
52f0bd74 | 1826 | struct display *d; |
c906108c SS |
1827 | |
1828 | for (d = display_chain; d; d = d->next) | |
1829 | do_one_display (d); | |
1830 | } | |
1831 | ||
1832 | /* Delete the auto-display which we were in the process of displaying. | |
1833 | This is done when there is an error or a signal. */ | |
1834 | ||
1835 | void | |
fba45db2 | 1836 | disable_display (int num) |
c906108c | 1837 | { |
52f0bd74 | 1838 | struct display *d; |
c906108c SS |
1839 | |
1840 | for (d = display_chain; d; d = d->next) | |
1841 | if (d->number == num) | |
1842 | { | |
b5de0fa7 | 1843 | d->enabled_p = 0; |
c906108c SS |
1844 | return; |
1845 | } | |
a3f17187 | 1846 | printf_unfiltered (_("No display number %d.\n"), num); |
c906108c | 1847 | } |
c5aa993b | 1848 | |
c906108c | 1849 | void |
fba45db2 | 1850 | disable_current_display (void) |
c906108c SS |
1851 | { |
1852 | if (current_display_number >= 0) | |
1853 | { | |
1854 | disable_display (current_display_number); | |
3e43a32a MS |
1855 | fprintf_unfiltered (gdb_stderr, |
1856 | _("Disabling display %d to " | |
1857 | "avoid infinite recursion.\n"), | |
c5aa993b | 1858 | current_display_number); |
c906108c SS |
1859 | } |
1860 | current_display_number = -1; | |
1861 | } | |
1862 | ||
1863 | static void | |
fba45db2 | 1864 | display_info (char *ignore, int from_tty) |
c906108c | 1865 | { |
52f0bd74 | 1866 | struct display *d; |
c906108c SS |
1867 | |
1868 | if (!display_chain) | |
a3f17187 | 1869 | printf_unfiltered (_("There are no auto-display expressions now.\n")); |
c906108c | 1870 | else |
a3f17187 AC |
1871 | printf_filtered (_("Auto-display expressions now in effect:\n\ |
1872 | Num Enb Expression\n")); | |
c906108c SS |
1873 | |
1874 | for (d = display_chain; d; d = d->next) | |
1875 | { | |
b5de0fa7 | 1876 | printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]); |
c906108c SS |
1877 | if (d->format.size) |
1878 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
c5aa993b | 1879 | d->format.format); |
c906108c SS |
1880 | else if (d->format.format) |
1881 | printf_filtered ("/%c ", d->format.format); | |
fa8a61dc | 1882 | puts_filtered (d->exp_string); |
ae767bfb | 1883 | if (d->block && !contained_in (get_selected_block (0), d->block)) |
a3f17187 | 1884 | printf_filtered (_(" (cannot be evaluated in the current context)")); |
c906108c SS |
1885 | printf_filtered ("\n"); |
1886 | gdb_flush (gdb_stdout); | |
1887 | } | |
1888 | } | |
1889 | ||
c9174737 PA |
1890 | /* Callback fo map_display_numbers, that enables or disables the |
1891 | passed in display D. */ | |
1892 | ||
c906108c | 1893 | static void |
c9174737 | 1894 | do_enable_disable_display (struct display *d, void *data) |
c906108c | 1895 | { |
c9174737 PA |
1896 | d->enabled_p = *(int *) data; |
1897 | } | |
c906108c | 1898 | |
c9174737 PA |
1899 | /* Implamentation of both the "disable display" and "enable display" |
1900 | commands. ENABLE decides what to do. */ | |
1901 | ||
1902 | static void | |
1903 | enable_disable_display_command (char *args, int from_tty, int enable) | |
1904 | { | |
1905 | if (args == NULL) | |
c906108c | 1906 | { |
c9174737 | 1907 | struct display *d; |
c5aa993b | 1908 | |
c9174737 PA |
1909 | ALL_DISPLAYS (d) |
1910 | d->enabled_p = enable; | |
1911 | return; | |
1912 | } | |
c5aa993b | 1913 | |
c9174737 | 1914 | map_display_numbers (args, do_enable_disable_display, &enable); |
c906108c SS |
1915 | } |
1916 | ||
c9174737 PA |
1917 | /* The "enable display" command. */ |
1918 | ||
c906108c | 1919 | static void |
c9174737 | 1920 | enable_display_command (char *args, int from_tty) |
c906108c | 1921 | { |
c9174737 PA |
1922 | enable_disable_display_command (args, from_tty, 1); |
1923 | } | |
c5aa993b | 1924 | |
c9174737 | 1925 | /* The "disable display" command. */ |
c906108c | 1926 | |
c9174737 PA |
1927 | static void |
1928 | disable_display_command (char *args, int from_tty) | |
1929 | { | |
1930 | enable_disable_display_command (args, from_tty, 0); | |
c906108c | 1931 | } |
a3247a22 | 1932 | |
a3247a22 PP |
1933 | /* display_chain items point to blocks and expressions. Some expressions in |
1934 | turn may point to symbols. | |
1935 | Both symbols and blocks are obstack_alloc'd on objfile_stack, and are | |
1936 | obstack_free'd when a shared library is unloaded. | |
1937 | Clear pointers that are about to become dangling. | |
1938 | Both .exp and .block fields will be restored next time we need to display | |
1939 | an item by re-parsing .exp_string field in the new execution context. */ | |
1940 | ||
1941 | static void | |
63644780 | 1942 | clear_dangling_display_expressions (struct objfile *objfile) |
a3247a22 PP |
1943 | { |
1944 | struct display *d; | |
63644780 | 1945 | struct program_space *pspace; |
a3247a22 | 1946 | |
c0201579 JK |
1947 | /* With no symbol file we cannot have a block or expression from it. */ |
1948 | if (objfile == NULL) | |
1949 | return; | |
63644780 | 1950 | pspace = objfile->pspace; |
c0201579 | 1951 | if (objfile->separate_debug_objfile_backlink) |
63644780 NB |
1952 | { |
1953 | objfile = objfile->separate_debug_objfile_backlink; | |
1954 | gdb_assert (objfile->pspace == pspace); | |
1955 | } | |
c0201579 JK |
1956 | |
1957 | for (d = display_chain; d != NULL; d = d->next) | |
a3247a22 | 1958 | { |
63644780 | 1959 | if (d->pspace != pspace) |
c0201579 JK |
1960 | continue; |
1961 | ||
1962 | if (lookup_objfile_from_block (d->block) == objfile | |
1963 | || (d->exp && exp_uses_objfile (d->exp, objfile))) | |
1964 | { | |
1965 | xfree (d->exp); | |
1966 | d->exp = NULL; | |
1967 | d->block = NULL; | |
1968 | } | |
a3247a22 PP |
1969 | } |
1970 | } | |
c906108c | 1971 | \f |
c5aa993b | 1972 | |
675dcf4f | 1973 | /* Print the value in stack frame FRAME of a variable specified by a |
aad95b57 TT |
1974 | struct symbol. NAME is the name to print; if NULL then VAR's print |
1975 | name will be used. STREAM is the ui_file on which to print the | |
1976 | value. INDENT specifies the number of indent levels to print | |
8f043999 JK |
1977 | before printing the variable name. |
1978 | ||
1979 | This function invalidates FRAME. */ | |
c906108c SS |
1980 | |
1981 | void | |
aad95b57 TT |
1982 | print_variable_and_value (const char *name, struct symbol *var, |
1983 | struct frame_info *frame, | |
1984 | struct ui_file *stream, int indent) | |
c906108c | 1985 | { |
0f6a939d | 1986 | volatile struct gdb_exception except; |
c906108c | 1987 | |
aad95b57 TT |
1988 | if (!name) |
1989 | name = SYMBOL_PRINT_NAME (var); | |
1990 | ||
1991 | fprintf_filtered (stream, "%s%s = ", n_spaces (2 * indent), name); | |
0f6a939d PM |
1992 | TRY_CATCH (except, RETURN_MASK_ERROR) |
1993 | { | |
1994 | struct value *val; | |
1995 | struct value_print_options opts; | |
aad95b57 | 1996 | |
0f6a939d PM |
1997 | val = read_var_value (var, frame); |
1998 | get_user_print_options (&opts); | |
3343315b | 1999 | opts.deref_ref = 1; |
0f6a939d | 2000 | common_val_print (val, stream, indent, &opts, current_language); |
8f043999 JK |
2001 | |
2002 | /* common_val_print invalidates FRAME when a pretty printer calls inferior | |
2003 | function. */ | |
2004 | frame = NULL; | |
0f6a939d PM |
2005 | } |
2006 | if (except.reason < 0) | |
2007 | fprintf_filtered(stream, "<error reading variable %s (%s)>", name, | |
2008 | except.message); | |
aad95b57 | 2009 | fprintf_filtered (stream, "\n"); |
c906108c SS |
2010 | } |
2011 | ||
c2792f5a DE |
2012 | /* Subroutine of ui_printf to simplify it. |
2013 | Print VALUE to STREAM using FORMAT. | |
e12f57ab | 2014 | VALUE is a C-style string on the target. */ |
c2792f5a DE |
2015 | |
2016 | static void | |
2017 | printf_c_string (struct ui_file *stream, const char *format, | |
2018 | struct value *value) | |
2019 | { | |
2020 | gdb_byte *str; | |
2021 | CORE_ADDR tem; | |
2022 | int j; | |
2023 | ||
2024 | tem = value_as_address (value); | |
2025 | ||
2026 | /* This is a %s argument. Find the length of the string. */ | |
2027 | for (j = 0;; j++) | |
2028 | { | |
2029 | gdb_byte c; | |
2030 | ||
2031 | QUIT; | |
2032 | read_memory (tem + j, &c, 1); | |
2033 | if (c == 0) | |
2034 | break; | |
2035 | } | |
2036 | ||
2037 | /* Copy the string contents into a string inside GDB. */ | |
2038 | str = (gdb_byte *) alloca (j + 1); | |
2039 | if (j != 0) | |
2040 | read_memory (tem, str, j); | |
2041 | str[j] = 0; | |
2042 | ||
2043 | fprintf_filtered (stream, format, (char *) str); | |
2044 | } | |
2045 | ||
2046 | /* Subroutine of ui_printf to simplify it. | |
2047 | Print VALUE to STREAM using FORMAT. | |
e12f57ab | 2048 | VALUE is a wide C-style string on the target. */ |
c2792f5a DE |
2049 | |
2050 | static void | |
2051 | printf_wide_c_string (struct ui_file *stream, const char *format, | |
2052 | struct value *value) | |
2053 | { | |
2054 | gdb_byte *str; | |
2055 | CORE_ADDR tem; | |
2056 | int j; | |
2057 | struct gdbarch *gdbarch = get_type_arch (value_type (value)); | |
2058 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
2059 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
2060 | "wchar_t", NULL, 0); | |
2061 | int wcwidth = TYPE_LENGTH (wctype); | |
2062 | gdb_byte *buf = alloca (wcwidth); | |
2063 | struct obstack output; | |
2064 | struct cleanup *inner_cleanup; | |
2065 | ||
2066 | tem = value_as_address (value); | |
2067 | ||
2068 | /* This is a %s argument. Find the length of the string. */ | |
2069 | for (j = 0;; j += wcwidth) | |
2070 | { | |
2071 | QUIT; | |
2072 | read_memory (tem + j, buf, wcwidth); | |
2073 | if (extract_unsigned_integer (buf, wcwidth, byte_order) == 0) | |
2074 | break; | |
2075 | } | |
2076 | ||
2077 | /* Copy the string contents into a string inside GDB. */ | |
2078 | str = (gdb_byte *) alloca (j + wcwidth); | |
2079 | if (j != 0) | |
2080 | read_memory (tem, str, j); | |
2081 | memset (&str[j], 0, wcwidth); | |
2082 | ||
2083 | obstack_init (&output); | |
2084 | inner_cleanup = make_cleanup_obstack_free (&output); | |
2085 | ||
2086 | convert_between_encodings (target_wide_charset (gdbarch), | |
2087 | host_charset (), | |
2088 | str, j, wcwidth, | |
2089 | &output, translit_char); | |
2090 | obstack_grow_str0 (&output, ""); | |
2091 | ||
2092 | fprintf_filtered (stream, format, obstack_base (&output)); | |
2093 | do_cleanups (inner_cleanup); | |
2094 | } | |
2095 | ||
2096 | /* Subroutine of ui_printf to simplify it. | |
2097 | Print VALUE, a decimal floating point value, to STREAM using FORMAT. */ | |
2098 | ||
2099 | static void | |
2100 | printf_decfloat (struct ui_file *stream, const char *format, | |
2101 | struct value *value) | |
2102 | { | |
2103 | const gdb_byte *param_ptr = value_contents (value); | |
2104 | ||
2105 | #if defined (PRINTF_HAS_DECFLOAT) | |
2106 | /* If we have native support for Decimal floating | |
2107 | printing, handle it here. */ | |
2108 | fprintf_filtered (stream, format, param_ptr); | |
2109 | #else | |
2110 | /* As a workaround until vasprintf has native support for DFP | |
2111 | we convert the DFP values to string and print them using | |
2112 | the %s format specifier. */ | |
2113 | const char *p; | |
2114 | ||
2115 | /* Parameter data. */ | |
2116 | struct type *param_type = value_type (value); | |
2117 | struct gdbarch *gdbarch = get_type_arch (param_type); | |
2118 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
2119 | ||
2120 | /* DFP output data. */ | |
2121 | struct value *dfp_value = NULL; | |
2122 | gdb_byte *dfp_ptr; | |
2123 | int dfp_len = 16; | |
2124 | gdb_byte dec[16]; | |
2125 | struct type *dfp_type = NULL; | |
2126 | char decstr[MAX_DECIMAL_STRING]; | |
2127 | ||
2128 | /* Points to the end of the string so that we can go back | |
2129 | and check for DFP length modifiers. */ | |
2130 | p = format + strlen (format); | |
2131 | ||
2132 | /* Look for the float/double format specifier. */ | |
2133 | while (*p != 'f' && *p != 'e' && *p != 'E' | |
2134 | && *p != 'g' && *p != 'G') | |
2135 | p--; | |
2136 | ||
2137 | /* Search for the '%' char and extract the size and type of | |
2138 | the output decimal value based on its modifiers | |
2139 | (%Hf, %Df, %DDf). */ | |
2140 | while (*--p != '%') | |
2141 | { | |
2142 | if (*p == 'H') | |
2143 | { | |
2144 | dfp_len = 4; | |
2145 | dfp_type = builtin_type (gdbarch)->builtin_decfloat; | |
2146 | } | |
2147 | else if (*p == 'D' && *(p - 1) == 'D') | |
2148 | { | |
2149 | dfp_len = 16; | |
2150 | dfp_type = builtin_type (gdbarch)->builtin_declong; | |
2151 | p--; | |
2152 | } | |
2153 | else | |
2154 | { | |
2155 | dfp_len = 8; | |
2156 | dfp_type = builtin_type (gdbarch)->builtin_decdouble; | |
2157 | } | |
2158 | } | |
2159 | ||
2160 | /* Conversion between different DFP types. */ | |
2161 | if (TYPE_CODE (param_type) == TYPE_CODE_DECFLOAT) | |
2162 | decimal_convert (param_ptr, TYPE_LENGTH (param_type), | |
2163 | byte_order, dec, dfp_len, byte_order); | |
2164 | else | |
2165 | /* If this is a non-trivial conversion, just output 0. | |
2166 | A correct converted value can be displayed by explicitly | |
2167 | casting to a DFP type. */ | |
2168 | decimal_from_string (dec, dfp_len, byte_order, "0"); | |
2169 | ||
2170 | dfp_value = value_from_decfloat (dfp_type, dec); | |
2171 | ||
2172 | dfp_ptr = (gdb_byte *) value_contents (dfp_value); | |
2173 | ||
2174 | decimal_to_string (dfp_ptr, dfp_len, byte_order, decstr); | |
2175 | ||
2176 | /* Print the DFP value. */ | |
2177 | fprintf_filtered (stream, "%s", decstr); | |
2178 | #endif | |
2179 | } | |
2180 | ||
2181 | /* Subroutine of ui_printf to simplify it. | |
2182 | Print VALUE, a target pointer, to STREAM using FORMAT. */ | |
2183 | ||
2184 | static void | |
2185 | printf_pointer (struct ui_file *stream, const char *format, | |
2186 | struct value *value) | |
2187 | { | |
2188 | /* We avoid the host's %p because pointers are too | |
2189 | likely to be the wrong size. The only interesting | |
2190 | modifier for %p is a width; extract that, and then | |
2191 | handle %p as glibc would: %#x or a literal "(nil)". */ | |
2192 | ||
2193 | const char *p; | |
2194 | char *fmt, *fmt_p; | |
2195 | #ifdef PRINTF_HAS_LONG_LONG | |
2196 | long long val = value_as_long (value); | |
2197 | #else | |
2198 | long val = value_as_long (value); | |
2199 | #endif | |
2200 | ||
2201 | fmt = alloca (strlen (format) + 5); | |
2202 | ||
2203 | /* Copy up to the leading %. */ | |
2204 | p = format; | |
2205 | fmt_p = fmt; | |
2206 | while (*p) | |
2207 | { | |
2208 | int is_percent = (*p == '%'); | |
2209 | ||
2210 | *fmt_p++ = *p++; | |
2211 | if (is_percent) | |
2212 | { | |
2213 | if (*p == '%') | |
2214 | *fmt_p++ = *p++; | |
2215 | else | |
2216 | break; | |
2217 | } | |
2218 | } | |
2219 | ||
2220 | if (val != 0) | |
2221 | *fmt_p++ = '#'; | |
2222 | ||
2223 | /* Copy any width. */ | |
2224 | while (*p >= '0' && *p < '9') | |
2225 | *fmt_p++ = *p++; | |
2226 | ||
2227 | gdb_assert (*p == 'p' && *(p + 1) == '\0'); | |
2228 | if (val != 0) | |
2229 | { | |
2230 | #ifdef PRINTF_HAS_LONG_LONG | |
2231 | *fmt_p++ = 'l'; | |
2232 | #endif | |
2233 | *fmt_p++ = 'l'; | |
2234 | *fmt_p++ = 'x'; | |
2235 | *fmt_p++ = '\0'; | |
2236 | fprintf_filtered (stream, fmt, val); | |
2237 | } | |
2238 | else | |
2239 | { | |
2240 | *fmt_p++ = 's'; | |
2241 | *fmt_p++ = '\0'; | |
2242 | fprintf_filtered (stream, fmt, "(nil)"); | |
2243 | } | |
2244 | } | |
2245 | ||
a04b0428 JB |
2246 | /* printf "printf format string" ARG to STREAM. */ |
2247 | ||
2248 | static void | |
bbc13ae3 | 2249 | ui_printf (const char *arg, struct ui_file *stream) |
c906108c | 2250 | { |
d3ce09f5 | 2251 | struct format_piece *fpieces; |
bbc13ae3 | 2252 | const char *s = arg; |
3d6d86c6 | 2253 | struct value **val_args; |
c906108c SS |
2254 | int allocated_args = 20; |
2255 | struct cleanup *old_cleanups; | |
2256 | ||
675dcf4f | 2257 | val_args = xmalloc (allocated_args * sizeof (struct value *)); |
c13c43fd | 2258 | old_cleanups = make_cleanup (free_current_contents, &val_args); |
c906108c SS |
2259 | |
2260 | if (s == 0) | |
e2e0b3e5 | 2261 | error_no_arg (_("format-control string and values to print")); |
c906108c | 2262 | |
bbc13ae3 | 2263 | s = skip_spaces_const (s); |
c906108c | 2264 | |
675dcf4f | 2265 | /* A format string should follow, enveloped in double quotes. */ |
c906108c | 2266 | if (*s++ != '"') |
8a3fe4f8 | 2267 | error (_("Bad format string, missing '\"'.")); |
c906108c | 2268 | |
d3ce09f5 | 2269 | fpieces = parse_format_string (&s); |
c906108c | 2270 | |
d3ce09f5 | 2271 | make_cleanup (free_format_pieces_cleanup, &fpieces); |
c906108c | 2272 | |
d3ce09f5 SS |
2273 | if (*s++ != '"') |
2274 | error (_("Bad format string, non-terminated '\"'.")); | |
2275 | ||
bbc13ae3 | 2276 | s = skip_spaces_const (s); |
c906108c SS |
2277 | |
2278 | if (*s != ',' && *s != 0) | |
8a3fe4f8 | 2279 | error (_("Invalid argument syntax")); |
c906108c | 2280 | |
c5aa993b JM |
2281 | if (*s == ',') |
2282 | s++; | |
bbc13ae3 | 2283 | s = skip_spaces_const (s); |
c906108c | 2284 | |
c906108c | 2285 | { |
d3ce09f5 | 2286 | int nargs = 0; |
c906108c | 2287 | int nargs_wanted; |
d3ce09f5 SS |
2288 | int i, fr; |
2289 | char *current_substring; | |
c906108c | 2290 | |
c906108c | 2291 | nargs_wanted = 0; |
d3ce09f5 SS |
2292 | for (fr = 0; fpieces[fr].string != NULL; fr++) |
2293 | if (fpieces[fr].argclass != literal_piece) | |
2294 | ++nargs_wanted; | |
c906108c SS |
2295 | |
2296 | /* Now, parse all arguments and evaluate them. | |
2297 | Store the VALUEs in VAL_ARGS. */ | |
2298 | ||
2299 | while (*s != '\0') | |
2300 | { | |
bbc13ae3 | 2301 | const char *s1; |
ad3bbd48 | 2302 | |
c906108c | 2303 | if (nargs == allocated_args) |
f976f6d4 AC |
2304 | val_args = (struct value **) xrealloc ((char *) val_args, |
2305 | (allocated_args *= 2) | |
2306 | * sizeof (struct value *)); | |
a04b0428 JB |
2307 | s1 = s; |
2308 | val_args[nargs] = parse_to_comma_and_eval (&s1); | |
c5aa993b | 2309 | |
c906108c SS |
2310 | nargs++; |
2311 | s = s1; | |
2312 | if (*s == ',') | |
2313 | s++; | |
2314 | } | |
c5aa993b | 2315 | |
c906108c | 2316 | if (nargs != nargs_wanted) |
8a3fe4f8 | 2317 | error (_("Wrong number of arguments for specified format-string")); |
c906108c SS |
2318 | |
2319 | /* Now actually print them. */ | |
d3ce09f5 SS |
2320 | i = 0; |
2321 | for (fr = 0; fpieces[fr].string != NULL; fr++) | |
c906108c | 2322 | { |
d3ce09f5 SS |
2323 | current_substring = fpieces[fr].string; |
2324 | switch (fpieces[fr].argclass) | |
c906108c SS |
2325 | { |
2326 | case string_arg: | |
c2792f5a | 2327 | printf_c_string (stream, current_substring, val_args[i]); |
c906108c | 2328 | break; |
6c7a06a3 | 2329 | case wide_string_arg: |
c2792f5a | 2330 | printf_wide_c_string (stream, current_substring, val_args[i]); |
6c7a06a3 TT |
2331 | break; |
2332 | case wide_char_arg: | |
2333 | { | |
50810684 UW |
2334 | struct gdbarch *gdbarch |
2335 | = get_type_arch (value_type (val_args[i])); | |
2336 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
e6c014f2 | 2337 | "wchar_t", NULL, 0); |
6c7a06a3 TT |
2338 | struct type *valtype; |
2339 | struct obstack output; | |
2340 | struct cleanup *inner_cleanup; | |
2341 | const gdb_byte *bytes; | |
2342 | ||
2343 | valtype = value_type (val_args[i]); | |
2344 | if (TYPE_LENGTH (valtype) != TYPE_LENGTH (wctype) | |
2345 | || TYPE_CODE (valtype) != TYPE_CODE_INT) | |
2346 | error (_("expected wchar_t argument for %%lc")); | |
2347 | ||
2348 | bytes = value_contents (val_args[i]); | |
2349 | ||
2350 | obstack_init (&output); | |
2351 | inner_cleanup = make_cleanup_obstack_free (&output); | |
2352 | ||
f870a310 | 2353 | convert_between_encodings (target_wide_charset (gdbarch), |
6c7a06a3 TT |
2354 | host_charset (), |
2355 | bytes, TYPE_LENGTH (valtype), | |
2356 | TYPE_LENGTH (valtype), | |
2357 | &output, translit_char); | |
2358 | obstack_grow_str0 (&output, ""); | |
2359 | ||
f1421989 HZ |
2360 | fprintf_filtered (stream, current_substring, |
2361 | obstack_base (&output)); | |
6c7a06a3 TT |
2362 | do_cleanups (inner_cleanup); |
2363 | } | |
2364 | break; | |
c906108c SS |
2365 | case double_arg: |
2366 | { | |
b806fb9a UW |
2367 | struct type *type = value_type (val_args[i]); |
2368 | DOUBLEST val; | |
2369 | int inv; | |
2370 | ||
2371 | /* If format string wants a float, unchecked-convert the value | |
2372 | to floating point of the same size. */ | |
50810684 | 2373 | type = float_type_from_length (type); |
b806fb9a UW |
2374 | val = unpack_double (type, value_contents (val_args[i]), &inv); |
2375 | if (inv) | |
2376 | error (_("Invalid floating value found in program.")); | |
2377 | ||
f1421989 | 2378 | fprintf_filtered (stream, current_substring, (double) val); |
c906108c SS |
2379 | break; |
2380 | } | |
46e9880c DJ |
2381 | case long_double_arg: |
2382 | #ifdef HAVE_LONG_DOUBLE | |
2383 | { | |
b806fb9a UW |
2384 | struct type *type = value_type (val_args[i]); |
2385 | DOUBLEST val; | |
2386 | int inv; | |
2387 | ||
2388 | /* If format string wants a float, unchecked-convert the value | |
2389 | to floating point of the same size. */ | |
50810684 | 2390 | type = float_type_from_length (type); |
b806fb9a UW |
2391 | val = unpack_double (type, value_contents (val_args[i]), &inv); |
2392 | if (inv) | |
2393 | error (_("Invalid floating value found in program.")); | |
2394 | ||
f1421989 HZ |
2395 | fprintf_filtered (stream, current_substring, |
2396 | (long double) val); | |
46e9880c DJ |
2397 | break; |
2398 | } | |
2399 | #else | |
2400 | error (_("long double not supported in printf")); | |
2401 | #endif | |
c906108c | 2402 | case long_long_arg: |
74a0d9f6 | 2403 | #ifdef PRINTF_HAS_LONG_LONG |
c906108c SS |
2404 | { |
2405 | long long val = value_as_long (val_args[i]); | |
ad3bbd48 | 2406 | |
f1421989 | 2407 | fprintf_filtered (stream, current_substring, val); |
c906108c SS |
2408 | break; |
2409 | } | |
2410 | #else | |
8a3fe4f8 | 2411 | error (_("long long not supported in printf")); |
c906108c SS |
2412 | #endif |
2413 | case int_arg: | |
2414 | { | |
46e9880c | 2415 | int val = value_as_long (val_args[i]); |
ad3bbd48 | 2416 | |
f1421989 | 2417 | fprintf_filtered (stream, current_substring, val); |
46e9880c DJ |
2418 | break; |
2419 | } | |
2420 | case long_arg: | |
2421 | { | |
c906108c | 2422 | long val = value_as_long (val_args[i]); |
ad3bbd48 | 2423 | |
f1421989 | 2424 | fprintf_filtered (stream, current_substring, val); |
c906108c SS |
2425 | break; |
2426 | } | |
0aea4bf3 | 2427 | /* Handles decimal floating values. */ |
c2792f5a DE |
2428 | case decfloat_arg: |
2429 | printf_decfloat (stream, current_substring, val_args[i]); | |
2430 | break; | |
2025a643 | 2431 | case ptr_arg: |
c2792f5a DE |
2432 | printf_pointer (stream, current_substring, val_args[i]); |
2433 | break; | |
d3ce09f5 SS |
2434 | case literal_piece: |
2435 | /* Print a portion of the format string that has no | |
2436 | directives. Note that this will not include any | |
2437 | ordinary %-specs, but it might include "%%". That is | |
2438 | why we use printf_filtered and not puts_filtered here. | |
2439 | Also, we pass a dummy argument because some platforms | |
2440 | have modified GCC to include -Wformat-security by | |
2441 | default, which will warn here if there is no | |
2442 | argument. */ | |
2443 | fprintf_filtered (stream, current_substring, 0); | |
2444 | break; | |
675dcf4f MK |
2445 | default: |
2446 | internal_error (__FILE__, __LINE__, | |
2025a643 | 2447 | _("failed internal consistency check")); |
c906108c | 2448 | } |
d3ce09f5 SS |
2449 | /* Maybe advance to the next argument. */ |
2450 | if (fpieces[fr].argclass != literal_piece) | |
2451 | ++i; | |
c906108c | 2452 | } |
c906108c SS |
2453 | } |
2454 | do_cleanups (old_cleanups); | |
2455 | } | |
c906108c | 2456 | |
f1421989 HZ |
2457 | /* Implement the "printf" command. */ |
2458 | ||
a04b0428 | 2459 | static void |
f1421989 HZ |
2460 | printf_command (char *arg, int from_tty) |
2461 | { | |
a04b0428 | 2462 | ui_printf (arg, gdb_stdout); |
50b34a18 | 2463 | gdb_flush (gdb_stdout); |
f1421989 HZ |
2464 | } |
2465 | ||
2466 | /* Implement the "eval" command. */ | |
2467 | ||
2468 | static void | |
2469 | eval_command (char *arg, int from_tty) | |
2470 | { | |
2471 | struct ui_file *ui_out = mem_fileopen (); | |
2472 | struct cleanup *cleanups = make_cleanup_ui_file_delete (ui_out); | |
2473 | char *expanded; | |
2474 | ||
a04b0428 | 2475 | ui_printf (arg, ui_out); |
f1421989 HZ |
2476 | |
2477 | expanded = ui_file_xstrdup (ui_out, NULL); | |
2478 | make_cleanup (xfree, expanded); | |
2479 | ||
2480 | execute_command (expanded, from_tty); | |
2481 | ||
2482 | do_cleanups (cleanups); | |
2483 | } | |
2484 | ||
c906108c | 2485 | void |
fba45db2 | 2486 | _initialize_printcmd (void) |
c906108c | 2487 | { |
c94fdfd0 EZ |
2488 | struct cmd_list_element *c; |
2489 | ||
c906108c SS |
2490 | current_display_number = -1; |
2491 | ||
63644780 | 2492 | observer_attach_free_objfile (clear_dangling_display_expressions); |
a3247a22 | 2493 | |
c906108c | 2494 | add_info ("address", address_info, |
1bedd215 | 2495 | _("Describe where symbol SYM is stored.")); |
c906108c | 2496 | |
1bedd215 AC |
2497 | add_info ("symbol", sym_info, _("\ |
2498 | Describe what symbol is at location ADDR.\n\ | |
2499 | Only for symbols with fixed locations (global or static scope).")); | |
c906108c | 2500 | |
1bedd215 AC |
2501 | add_com ("x", class_vars, x_command, _("\ |
2502 | Examine memory: x/FMT ADDRESS.\n\ | |
c906108c SS |
2503 | ADDRESS is an expression for the memory address to examine.\n\ |
2504 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2505 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
6fbe845e AB |
2506 | t(binary), f(float), a(address), i(instruction), c(char), s(string)\n\ |
2507 | and z(hex, zero padded on the left).\n\ | |
1bedd215 | 2508 | Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ |
c906108c SS |
2509 | The specified number of objects of the specified size are printed\n\ |
2510 | according to the format.\n\n\ | |
2511 | Defaults for format and size letters are those previously used.\n\ | |
2512 | Default count is 1. Default address is following last thing printed\n\ | |
1bedd215 | 2513 | with this command or \"print\".")); |
c906108c | 2514 | |
c906108c SS |
2515 | #if 0 |
2516 | add_com ("whereis", class_vars, whereis_command, | |
1bedd215 | 2517 | _("Print line number and file of definition of variable.")); |
c906108c | 2518 | #endif |
c5aa993b | 2519 | |
1bedd215 AC |
2520 | add_info ("display", display_info, _("\ |
2521 | Expressions to display when program stops, with code numbers.")); | |
c906108c | 2522 | |
1a966eab AC |
2523 | add_cmd ("undisplay", class_vars, undisplay_command, _("\ |
2524 | Cancel some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2525 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2526 | No argument means cancel all automatic-display expressions.\n\ | |
2527 | \"delete display\" has the same effect as this command.\n\ | |
1a966eab | 2528 | Do \"info display\" to see current list of code numbers."), |
c5aa993b | 2529 | &cmdlist); |
c906108c | 2530 | |
1bedd215 AC |
2531 | add_com ("display", class_vars, display_command, _("\ |
2532 | Print value of expression EXP each time the program stops.\n\ | |
c906108c SS |
2533 | /FMT may be used before EXP as in the \"print\" command.\n\ |
2534 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2535 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2536 | and examining is done as in the \"x\" command.\n\n\ | |
2537 | With no argument, display all currently requested auto-display expressions.\n\ | |
1bedd215 | 2538 | Use \"undisplay\" to cancel display requests previously made.")); |
c906108c | 2539 | |
c9174737 | 2540 | add_cmd ("display", class_vars, enable_display_command, _("\ |
1a966eab | 2541 | Enable some expressions to be displayed when program stops.\n\ |
c906108c SS |
2542 | Arguments are the code numbers of the expressions to resume displaying.\n\ |
2543 | No argument means enable all automatic-display expressions.\n\ | |
1a966eab | 2544 | Do \"info display\" to see current list of code numbers."), &enablelist); |
c906108c | 2545 | |
1a966eab AC |
2546 | add_cmd ("display", class_vars, disable_display_command, _("\ |
2547 | Disable some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2548 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2549 | No argument means disable all automatic-display expressions.\n\ | |
1a966eab | 2550 | Do \"info display\" to see current list of code numbers."), &disablelist); |
c906108c | 2551 | |
1a966eab AC |
2552 | add_cmd ("display", class_vars, undisplay_command, _("\ |
2553 | Cancel some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2554 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2555 | No argument means cancel all automatic-display expressions.\n\ | |
1a966eab | 2556 | Do \"info display\" to see current list of code numbers."), &deletelist); |
c906108c | 2557 | |
1bedd215 AC |
2558 | add_com ("printf", class_vars, printf_command, _("\ |
2559 | printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
2560 | This is useful for formatted output in user-defined commands.")); | |
c906108c | 2561 | |
1bedd215 AC |
2562 | add_com ("output", class_vars, output_command, _("\ |
2563 | Like \"print\" but don't put in value history and don't print newline.\n\ | |
2564 | This is useful in user-defined commands.")); | |
c906108c | 2565 | |
1bedd215 AC |
2566 | add_prefix_cmd ("set", class_vars, set_command, _("\ |
2567 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2568 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2569 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2570 | with $), a register (a few standard names starting with $), or an actual\n\ | |
1bedd215 AC |
2571 | variable in the program being debugged. EXP is any valid expression.\n\ |
2572 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
2573 | \n\ | |
2574 | With a subcommand, this command modifies parts of the gdb environment.\n\ | |
2575 | You can see these environment settings with the \"show\" command."), | |
c5aa993b | 2576 | &setlist, "set ", 1, &cmdlist); |
c906108c | 2577 | if (dbx_commands) |
1bedd215 AC |
2578 | add_com ("assign", class_vars, set_command, _("\ |
2579 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2580 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2581 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2582 | with $), a register (a few standard names starting with $), or an actual\n\ | |
1bedd215 AC |
2583 | variable in the program being debugged. EXP is any valid expression.\n\ |
2584 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
c906108c | 2585 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
1bedd215 | 2586 | You can see these environment settings with the \"show\" command.")); |
c906108c | 2587 | |
0df8b418 | 2588 | /* "call" is the same as "set", but handy for dbx users to call fns. */ |
1bedd215 AC |
2589 | c = add_com ("call", class_vars, call_command, _("\ |
2590 | Call a function in the program.\n\ | |
c906108c SS |
2591 | The argument is the function name and arguments, in the notation of the\n\ |
2592 | current working language. The result is printed and saved in the value\n\ | |
1bedd215 | 2593 | history, if it is not void.")); |
65d12d83 | 2594 | set_cmd_completer (c, expression_completer); |
c906108c | 2595 | |
1a966eab AC |
2596 | add_cmd ("variable", class_vars, set_command, _("\ |
2597 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2598 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2599 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2600 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2601 | variable in the program being debugged. EXP is any valid expression.\n\ | |
1a966eab | 2602 | This may usually be abbreviated to simply \"set\"."), |
c5aa993b | 2603 | &setlist); |
c906108c | 2604 | |
1bedd215 AC |
2605 | c = add_com ("print", class_vars, print_command, _("\ |
2606 | Print value of expression EXP.\n\ | |
c906108c SS |
2607 | Variables accessible are those of the lexical environment of the selected\n\ |
2608 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2609 | \n\ | |
2610 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2611 | $$NUM refers to NUM'th value back from the last one.\n\ | |
1bedd215 AC |
2612 | Names starting with $ refer to registers (with the values they would have\n\ |
2613 | if the program were to return to the stack frame now selected, restoring\n\ | |
c906108c SS |
2614 | all registers saved by frames farther in) or else to debugger\n\ |
2615 | \"convenience\" variables (any such name not a known register).\n\ | |
1bedd215 AC |
2616 | Use assignment expressions to give values to convenience variables.\n\ |
2617 | \n\ | |
c906108c SS |
2618 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ |
2619 | @ is a binary operator for treating consecutive data objects\n\ | |
2620 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2621 | element is FOO, whose second element is stored in the space following\n\ | |
2622 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
1bedd215 AC |
2623 | resides in memory.\n\ |
2624 | \n\ | |
c906108c | 2625 | EXP may be preceded with /FMT, where FMT is a format letter\n\ |
1bedd215 | 2626 | but no count or size letter (see \"x\" command).")); |
65d12d83 | 2627 | set_cmd_completer (c, expression_completer); |
c906108c | 2628 | add_com_alias ("p", "print", class_vars, 1); |
e93a8774 | 2629 | add_com_alias ("inspect", "print", class_vars, 1); |
c906108c | 2630 | |
35096d9d AC |
2631 | add_setshow_uinteger_cmd ("max-symbolic-offset", no_class, |
2632 | &max_symbolic_offset, _("\ | |
2633 | Set the largest offset that will be printed in <symbol+1234> form."), _("\ | |
f81d1120 PA |
2634 | Show the largest offset that will be printed in <symbol+1234> form."), _("\ |
2635 | Tell GDB to only display the symbolic form of an address if the\n\ | |
2636 | offset between the closest earlier symbol and the address is less than\n\ | |
2637 | the specified maximum offset. The default is \"unlimited\", which tells GDB\n\ | |
2638 | to always print the symbolic form of an address if any symbol precedes\n\ | |
2639 | it. Zero is equivalent to \"unlimited\"."), | |
35096d9d | 2640 | NULL, |
920d2a44 | 2641 | show_max_symbolic_offset, |
35096d9d | 2642 | &setprintlist, &showprintlist); |
5bf193a2 AC |
2643 | add_setshow_boolean_cmd ("symbol-filename", no_class, |
2644 | &print_symbol_filename, _("\ | |
2645 | Set printing of source filename and line number with <symbol>."), _("\ | |
2646 | Show printing of source filename and line number with <symbol>."), NULL, | |
2647 | NULL, | |
920d2a44 | 2648 | show_print_symbol_filename, |
5bf193a2 | 2649 | &setprintlist, &showprintlist); |
f1421989 HZ |
2650 | |
2651 | add_com ("eval", no_class, eval_command, _("\ | |
2652 | Convert \"printf format string\", arg1, arg2, arg3, ..., argn to\n\ | |
2653 | a command line, and call it.")); | |
c906108c | 2654 | } |