Commit | Line | Data |
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c906108c | 1 | /* Print values for GNU debugger GDB. |
e2ad119d | 2 | |
32d0add0 | 3 | Copyright (C) 1986-2015 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" | |
c906108c SS |
21 | #include "frame.h" |
22 | #include "symtab.h" | |
23 | #include "gdbtypes.h" | |
24 | #include "value.h" | |
25 | #include "language.h" | |
26 | #include "expression.h" | |
27 | #include "gdbcore.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "target.h" | |
30 | #include "breakpoint.h" | |
31 | #include "demangle.h" | |
50f182aa | 32 | #include "gdb-demangle.h" |
c906108c SS |
33 | #include "valprint.h" |
34 | #include "annotate.h" | |
c5aa993b JM |
35 | #include "symfile.h" /* for overlay functions */ |
36 | #include "objfiles.h" /* ditto */ | |
c94fdfd0 | 37 | #include "completer.h" /* for completion functions */ |
8b93c638 | 38 | #include "ui-out.h" |
fe898f56 | 39 | #include "block.h" |
92bf2b80 | 40 | #include "disasm.h" |
1a619819 | 41 | #include "dfp.h" |
a3247a22 PP |
42 | #include "observer.h" |
43 | #include "solist.h" | |
a3247a22 | 44 | #include "parser-defs.h" |
6c7a06a3 | 45 | #include "charset.h" |
704e9165 | 46 | #include "arch-utils.h" |
e9cafbcc | 47 | #include "cli/cli-utils.h" |
d3ce09f5 | 48 | #include "format.h" |
05cba821 | 49 | #include "source.h" |
c906108c | 50 | |
6a83354a | 51 | #ifdef TUI |
0df8b418 | 52 | #include "tui/tui.h" /* For tui_active et al. */ |
6a83354a AC |
53 | #endif |
54 | ||
c906108c SS |
55 | /* Last specified output format. */ |
56 | ||
a6bac58e | 57 | static char last_format = 0; |
c906108c SS |
58 | |
59 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
60 | ||
61 | static char last_size = 'w'; | |
62 | ||
5d3729b5 | 63 | /* Default address to examine next, and associated architecture. */ |
c906108c | 64 | |
5d3729b5 | 65 | static struct gdbarch *next_gdbarch; |
c906108c SS |
66 | static CORE_ADDR next_address; |
67 | ||
a4642986 MR |
68 | /* Number of delay instructions following current disassembled insn. */ |
69 | ||
70 | static int branch_delay_insns; | |
71 | ||
c906108c SS |
72 | /* Last address examined. */ |
73 | ||
74 | static CORE_ADDR last_examine_address; | |
75 | ||
76 | /* Contents of last address examined. | |
77 | This is not valid past the end of the `x' command! */ | |
78 | ||
3d6d86c6 | 79 | static struct value *last_examine_value; |
c906108c SS |
80 | |
81 | /* Largest offset between a symbolic value and an address, that will be | |
82 | printed as `0x1234 <symbol+offset>'. */ | |
83 | ||
84 | static unsigned int max_symbolic_offset = UINT_MAX; | |
920d2a44 AC |
85 | static void |
86 | show_max_symbolic_offset (struct ui_file *file, int from_tty, | |
87 | struct cmd_list_element *c, const char *value) | |
88 | { | |
3e43a32a MS |
89 | fprintf_filtered (file, |
90 | _("The largest offset that will be " | |
91 | "printed in <symbol+1234> form is %s.\n"), | |
920d2a44 AC |
92 | value); |
93 | } | |
c906108c SS |
94 | |
95 | /* Append the source filename and linenumber of the symbol when | |
96 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
97 | static int print_symbol_filename = 0; | |
920d2a44 AC |
98 | static void |
99 | show_print_symbol_filename (struct ui_file *file, int from_tty, | |
100 | struct cmd_list_element *c, const char *value) | |
101 | { | |
3e43a32a MS |
102 | fprintf_filtered (file, _("Printing of source filename and " |
103 | "line number with <symbol> is %s.\n"), | |
920d2a44 AC |
104 | value); |
105 | } | |
c906108c SS |
106 | |
107 | /* Number of auto-display expression currently being displayed. | |
9d8fa392 | 108 | So that we can disable it if we get a signal within it. |
c906108c SS |
109 | -1 when not doing one. */ |
110 | ||
5a18e302 | 111 | static int current_display_number; |
c906108c | 112 | |
c906108c | 113 | struct display |
c5aa993b JM |
114 | { |
115 | /* Chain link to next auto-display item. */ | |
116 | struct display *next; | |
6c95b8df | 117 | |
fa8a61dc TT |
118 | /* The expression as the user typed it. */ |
119 | char *exp_string; | |
6c95b8df | 120 | |
c5aa993b JM |
121 | /* Expression to be evaluated and displayed. */ |
122 | struct expression *exp; | |
6c95b8df | 123 | |
c5aa993b JM |
124 | /* Item number of this auto-display item. */ |
125 | int number; | |
6c95b8df | 126 | |
c5aa993b JM |
127 | /* Display format specified. */ |
128 | struct format_data format; | |
6c95b8df PA |
129 | |
130 | /* Program space associated with `block'. */ | |
131 | struct program_space *pspace; | |
132 | ||
0df8b418 | 133 | /* Innermost block required by this expression when evaluated. */ |
270140bd | 134 | const struct block *block; |
6c95b8df | 135 | |
0df8b418 | 136 | /* Status of this display (enabled or disabled). */ |
b5de0fa7 | 137 | int enabled_p; |
c5aa993b | 138 | }; |
c906108c SS |
139 | |
140 | /* Chain of expressions whose values should be displayed | |
141 | automatically each time the program stops. */ | |
142 | ||
143 | static struct display *display_chain; | |
144 | ||
145 | static int display_number; | |
146 | ||
c9174737 PA |
147 | /* Walk the following statement or block through all displays. |
148 | ALL_DISPLAYS_SAFE does so even if the statement deletes the current | |
149 | display. */ | |
3c3fe74c PA |
150 | |
151 | #define ALL_DISPLAYS(B) \ | |
152 | for (B = display_chain; B; B = B->next) | |
153 | ||
c9174737 PA |
154 | #define ALL_DISPLAYS_SAFE(B,TMP) \ |
155 | for (B = display_chain; \ | |
156 | B ? (TMP = B->next, 1): 0; \ | |
157 | B = TMP) | |
158 | ||
0df8b418 | 159 | /* Prototypes for exported functions. */ |
c906108c | 160 | |
a14ed312 | 161 | void _initialize_printcmd (void); |
c906108c | 162 | |
0df8b418 | 163 | /* Prototypes for local functions. */ |
c906108c | 164 | |
a14ed312 | 165 | static void do_one_display (struct display *); |
c906108c | 166 | \f |
c5aa993b | 167 | |
c906108c SS |
168 | /* Decode a format specification. *STRING_PTR should point to it. |
169 | OFORMAT and OSIZE are used as defaults for the format and size | |
170 | if none are given in the format specification. | |
171 | If OSIZE is zero, then the size field of the returned value | |
172 | should be set only if a size is explicitly specified by the | |
173 | user. | |
174 | The structure returned describes all the data | |
175 | found in the specification. In addition, *STRING_PTR is advanced | |
176 | past the specification and past all whitespace following it. */ | |
177 | ||
178 | static struct format_data | |
6f937416 | 179 | decode_format (const char **string_ptr, int oformat, int osize) |
c906108c SS |
180 | { |
181 | struct format_data val; | |
6f937416 | 182 | const char *p = *string_ptr; |
c906108c SS |
183 | |
184 | val.format = '?'; | |
185 | val.size = '?'; | |
186 | val.count = 1; | |
a6bac58e | 187 | val.raw = 0; |
c906108c SS |
188 | |
189 | if (*p >= '0' && *p <= '9') | |
190 | val.count = atoi (p); | |
c5aa993b JM |
191 | while (*p >= '0' && *p <= '9') |
192 | p++; | |
c906108c SS |
193 | |
194 | /* Now process size or format letters that follow. */ | |
195 | ||
196 | while (1) | |
197 | { | |
198 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
199 | val.size = *p++; | |
a6bac58e TT |
200 | else if (*p == 'r') |
201 | { | |
202 | val.raw = 1; | |
203 | p++; | |
204 | } | |
c906108c SS |
205 | else if (*p >= 'a' && *p <= 'z') |
206 | val.format = *p++; | |
207 | else | |
208 | break; | |
209 | } | |
210 | ||
c5aa993b JM |
211 | while (*p == ' ' || *p == '\t') |
212 | p++; | |
c906108c SS |
213 | *string_ptr = p; |
214 | ||
215 | /* Set defaults for format and size if not specified. */ | |
216 | if (val.format == '?') | |
217 | { | |
218 | if (val.size == '?') | |
219 | { | |
220 | /* Neither has been specified. */ | |
221 | val.format = oformat; | |
222 | val.size = osize; | |
223 | } | |
224 | else | |
225 | /* If a size is specified, any format makes a reasonable | |
226 | default except 'i'. */ | |
227 | val.format = oformat == 'i' ? 'x' : oformat; | |
228 | } | |
229 | else if (val.size == '?') | |
230 | switch (val.format) | |
231 | { | |
232 | case 'a': | |
5d3729b5 UW |
233 | /* Pick the appropriate size for an address. This is deferred |
234 | until do_examine when we know the actual architecture to use. | |
235 | A special size value of 'a' is used to indicate this case. */ | |
236 | val.size = osize ? 'a' : osize; | |
c906108c SS |
237 | break; |
238 | case 'f': | |
239 | /* Floating point has to be word or giantword. */ | |
240 | if (osize == 'w' || osize == 'g') | |
241 | val.size = osize; | |
242 | else | |
243 | /* Default it to giantword if the last used size is not | |
244 | appropriate. */ | |
245 | val.size = osize ? 'g' : osize; | |
246 | break; | |
247 | case 'c': | |
248 | /* Characters default to one byte. */ | |
249 | val.size = osize ? 'b' : osize; | |
250 | break; | |
9a22f0d0 | 251 | case 's': |
3e43a32a MS |
252 | /* Display strings with byte size chars unless explicitly |
253 | specified. */ | |
9a22f0d0 PM |
254 | val.size = '\0'; |
255 | break; | |
256 | ||
c906108c SS |
257 | default: |
258 | /* The default is the size most recently specified. */ | |
259 | val.size = osize; | |
260 | } | |
261 | ||
262 | return val; | |
263 | } | |
264 | \f | |
79a45b7d | 265 | /* Print value VAL on stream according to OPTIONS. |
c906108c | 266 | Do not end with a newline. |
c906108c | 267 | SIZE is the letter for the size of datum being printed. |
ea37ba09 DJ |
268 | This is used to pad hex numbers so they line up. SIZE is 0 |
269 | for print / output and set for examine. */ | |
c906108c SS |
270 | |
271 | static void | |
79a45b7d TT |
272 | print_formatted (struct value *val, int size, |
273 | const struct value_print_options *options, | |
fba45db2 | 274 | struct ui_file *stream) |
c906108c | 275 | { |
df407dfe | 276 | struct type *type = check_typedef (value_type (val)); |
c906108c SS |
277 | int len = TYPE_LENGTH (type); |
278 | ||
279 | if (VALUE_LVAL (val) == lval_memory) | |
42ae5230 | 280 | next_address = value_address (val) + len; |
c906108c | 281 | |
ea37ba09 | 282 | if (size) |
c906108c | 283 | { |
79a45b7d | 284 | switch (options->format) |
ea37ba09 DJ |
285 | { |
286 | case 's': | |
6c7a06a3 TT |
287 | { |
288 | struct type *elttype = value_type (val); | |
ad3bbd48 | 289 | |
42ae5230 | 290 | next_address = (value_address (val) |
09ca9e2e | 291 | + val_print_string (elttype, NULL, |
42ae5230 | 292 | value_address (val), -1, |
9a22f0d0 | 293 | stream, options) * len); |
6c7a06a3 | 294 | } |
ea37ba09 | 295 | return; |
c906108c | 296 | |
ea37ba09 DJ |
297 | case 'i': |
298 | /* We often wrap here if there are long symbolic names. */ | |
299 | wrap_here (" "); | |
42ae5230 | 300 | next_address = (value_address (val) |
13274fc3 UW |
301 | + gdb_print_insn (get_type_arch (type), |
302 | value_address (val), stream, | |
ea37ba09 DJ |
303 | &branch_delay_insns)); |
304 | return; | |
305 | } | |
c906108c | 306 | } |
ea37ba09 | 307 | |
79a45b7d | 308 | if (options->format == 0 || options->format == 's' |
4e885b20 | 309 | || TYPE_CODE (type) == TYPE_CODE_REF |
ea37ba09 DJ |
310 | || TYPE_CODE (type) == TYPE_CODE_ARRAY |
311 | || TYPE_CODE (type) == TYPE_CODE_STRING | |
312 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
313 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
314 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
79a45b7d | 315 | value_print (val, stream, options); |
ea37ba09 | 316 | else |
b021a221 MS |
317 | /* User specified format, so don't look to the type to tell us |
318 | what to do. */ | |
ab2188aa PA |
319 | val_print_scalar_formatted (type, |
320 | value_contents_for_printing (val), | |
321 | value_embedded_offset (val), | |
322 | val, | |
323 | options, size, stream); | |
c906108c SS |
324 | } |
325 | ||
b806fb9a UW |
326 | /* Return builtin floating point type of same length as TYPE. |
327 | If no such type is found, return TYPE itself. */ | |
328 | static struct type * | |
50810684 | 329 | float_type_from_length (struct type *type) |
b806fb9a | 330 | { |
50810684 | 331 | struct gdbarch *gdbarch = get_type_arch (type); |
b806fb9a | 332 | const struct builtin_type *builtin = builtin_type (gdbarch); |
b806fb9a | 333 | |
744a8059 | 334 | if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_float)) |
b806fb9a | 335 | type = builtin->builtin_float; |
744a8059 | 336 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_double)) |
b806fb9a | 337 | type = builtin->builtin_double; |
744a8059 | 338 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_long_double)) |
b806fb9a UW |
339 | type = builtin->builtin_long_double; |
340 | ||
341 | return type; | |
342 | } | |
343 | ||
c906108c | 344 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, |
ab2188aa PA |
345 | according to OPTIONS and SIZE on STREAM. Formats s and i are not |
346 | supported at this level. */ | |
c906108c SS |
347 | |
348 | void | |
366b1cbf | 349 | print_scalar_formatted (const void *valaddr, struct type *type, |
79a45b7d TT |
350 | const struct value_print_options *options, |
351 | int size, struct ui_file *stream) | |
c906108c | 352 | { |
50810684 | 353 | struct gdbarch *gdbarch = get_type_arch (type); |
81cb7cc9 | 354 | LONGEST val_long = 0; |
c906108c | 355 | unsigned int len = TYPE_LENGTH (type); |
69feb676 | 356 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 357 | |
ab2188aa PA |
358 | /* String printing should go through val_print_scalar_formatted. */ |
359 | gdb_assert (options->format != 's'); | |
ea37ba09 | 360 | |
6b9acc27 JJ |
361 | if (len > sizeof(LONGEST) && |
362 | (TYPE_CODE (type) == TYPE_CODE_INT | |
363 | || TYPE_CODE (type) == TYPE_CODE_ENUM)) | |
364 | { | |
79a45b7d | 365 | switch (options->format) |
6b9acc27 JJ |
366 | { |
367 | case 'o': | |
d44e8473 | 368 | print_octal_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
369 | return; |
370 | case 'u': | |
371 | case 'd': | |
d44e8473 | 372 | print_decimal_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
373 | return; |
374 | case 't': | |
d44e8473 | 375 | print_binary_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
376 | return; |
377 | case 'x': | |
d44e8473 | 378 | print_hex_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
379 | return; |
380 | case 'c': | |
6c7a06a3 | 381 | print_char_chars (stream, type, valaddr, len, byte_order); |
6b9acc27 JJ |
382 | return; |
383 | default: | |
384 | break; | |
385 | }; | |
386 | } | |
387 | ||
79a45b7d | 388 | if (options->format != 'f') |
c906108c SS |
389 | val_long = unpack_long (type, valaddr); |
390 | ||
ef166cf4 | 391 | /* If the value is a pointer, and pointers and addresses are not the |
d0aee0c4 | 392 | same, then at this point, the value's length (in target bytes) is |
17a912b6 | 393 | gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */ |
ef166cf4 | 394 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
69feb676 | 395 | len = gdbarch_addr_bit (gdbarch) / TARGET_CHAR_BIT; |
ef166cf4 | 396 | |
c906108c SS |
397 | /* If we are printing it as unsigned, truncate it in case it is actually |
398 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
399 | (if shorts are 16 bits) instead of 4294967295). */ | |
1fac167a | 400 | if (options->format != 'd' || TYPE_UNSIGNED (type)) |
c906108c SS |
401 | { |
402 | if (len < sizeof (LONGEST)) | |
403 | val_long &= ((LONGEST) 1 << HOST_CHAR_BIT * len) - 1; | |
404 | } | |
405 | ||
79a45b7d | 406 | switch (options->format) |
c906108c SS |
407 | { |
408 | case 'x': | |
409 | if (!size) | |
410 | { | |
675dcf4f | 411 | /* No size specified, like in print. Print varying # of digits. */ |
c906108c SS |
412 | print_longest (stream, 'x', 1, val_long); |
413 | } | |
414 | else | |
415 | switch (size) | |
416 | { | |
417 | case 'b': | |
418 | case 'h': | |
419 | case 'w': | |
420 | case 'g': | |
421 | print_longest (stream, size, 1, val_long); | |
422 | break; | |
423 | default: | |
8a3fe4f8 | 424 | error (_("Undefined output size \"%c\"."), size); |
c906108c SS |
425 | } |
426 | break; | |
427 | ||
428 | case 'd': | |
429 | print_longest (stream, 'd', 1, val_long); | |
430 | break; | |
431 | ||
432 | case 'u': | |
433 | print_longest (stream, 'u', 0, val_long); | |
434 | break; | |
435 | ||
436 | case 'o': | |
437 | if (val_long) | |
438 | print_longest (stream, 'o', 1, val_long); | |
439 | else | |
440 | fprintf_filtered (stream, "0"); | |
441 | break; | |
442 | ||
443 | case 'a': | |
593de6a6 | 444 | { |
593de6a6 | 445 | CORE_ADDR addr = unpack_pointer (type, valaddr); |
ad3bbd48 | 446 | |
5af949e3 | 447 | print_address (gdbarch, addr, stream); |
593de6a6 | 448 | } |
c906108c SS |
449 | break; |
450 | ||
451 | case 'c': | |
79a45b7d TT |
452 | { |
453 | struct value_print_options opts = *options; | |
69feb676 | 454 | |
ad3bbd48 | 455 | opts.format = 0; |
79a45b7d | 456 | if (TYPE_UNSIGNED (type)) |
69feb676 UW |
457 | type = builtin_type (gdbarch)->builtin_true_unsigned_char; |
458 | else | |
459 | type = builtin_type (gdbarch)->builtin_true_char; | |
460 | ||
461 | value_print (value_from_longest (type, val_long), stream, &opts); | |
79a45b7d | 462 | } |
c906108c SS |
463 | break; |
464 | ||
465 | case 'f': | |
50810684 | 466 | type = float_type_from_length (type); |
c906108c SS |
467 | print_floating (valaddr, type, stream); |
468 | break; | |
469 | ||
470 | case 0: | |
675dcf4f MK |
471 | internal_error (__FILE__, __LINE__, |
472 | _("failed internal consistency check")); | |
c906108c SS |
473 | |
474 | case 't': | |
475 | /* Binary; 't' stands for "two". */ | |
476 | { | |
c5aa993b JM |
477 | char bits[8 * (sizeof val_long) + 1]; |
478 | char buf[8 * (sizeof val_long) + 32]; | |
c906108c SS |
479 | char *cp = bits; |
480 | int width; | |
481 | ||
c5aa993b JM |
482 | if (!size) |
483 | width = 8 * (sizeof val_long); | |
484 | else | |
485 | switch (size) | |
c906108c SS |
486 | { |
487 | case 'b': | |
488 | width = 8; | |
489 | break; | |
490 | case 'h': | |
491 | width = 16; | |
492 | break; | |
493 | case 'w': | |
494 | width = 32; | |
495 | break; | |
496 | case 'g': | |
497 | width = 64; | |
498 | break; | |
499 | default: | |
8a3fe4f8 | 500 | error (_("Undefined output size \"%c\"."), size); |
c906108c SS |
501 | } |
502 | ||
c5aa993b JM |
503 | bits[width] = '\0'; |
504 | while (width-- > 0) | |
505 | { | |
506 | bits[width] = (val_long & 1) ? '1' : '0'; | |
507 | val_long >>= 1; | |
508 | } | |
c906108c SS |
509 | if (!size) |
510 | { | |
511 | while (*cp && *cp == '0') | |
512 | cp++; | |
513 | if (*cp == '\0') | |
514 | cp--; | |
515 | } | |
daac021a | 516 | strncpy (buf, cp, sizeof (bits)); |
306d9ac5 | 517 | fputs_filtered (buf, stream); |
c906108c SS |
518 | } |
519 | break; | |
520 | ||
6fbe845e AB |
521 | case 'z': |
522 | print_hex_chars (stream, valaddr, len, byte_order); | |
523 | break; | |
524 | ||
c906108c | 525 | default: |
79a45b7d | 526 | error (_("Undefined output format \"%c\"."), options->format); |
c906108c SS |
527 | } |
528 | } | |
529 | ||
530 | /* Specify default address for `x' command. | |
675dcf4f | 531 | The `info lines' command uses this. */ |
c906108c SS |
532 | |
533 | void | |
8b9b9e1a | 534 | set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 535 | { |
8b9b9e1a UW |
536 | struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
537 | ||
5d3729b5 | 538 | next_gdbarch = gdbarch; |
c906108c SS |
539 | next_address = addr; |
540 | ||
541 | /* Make address available to the user as $_. */ | |
542 | set_internalvar (lookup_internalvar ("_"), | |
8b9b9e1a | 543 | value_from_pointer (ptr_type, addr)); |
c906108c SS |
544 | } |
545 | ||
546 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
547 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
548 | Optionally also print source file and line number, if available. | |
549 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
550 | or to interpret it as a possible C++ name and convert it back to source | |
551 | form. However note that DO_DEMANGLE can be overridden by the specific | |
9cb709b6 TT |
552 | settings of the demangle and asm_demangle variables. Returns |
553 | non-zero if anything was printed; zero otherwise. */ | |
c906108c | 554 | |
9cb709b6 | 555 | int |
22e722e1 DJ |
556 | print_address_symbolic (struct gdbarch *gdbarch, CORE_ADDR addr, |
557 | struct ui_file *stream, | |
675dcf4f | 558 | int do_demangle, char *leadin) |
dfcd3bfb JM |
559 | { |
560 | char *name = NULL; | |
561 | char *filename = NULL; | |
562 | int unmapped = 0; | |
563 | int offset = 0; | |
564 | int line = 0; | |
565 | ||
675dcf4f | 566 | /* Throw away both name and filename. */ |
2f9429ae AC |
567 | struct cleanup *cleanup_chain = make_cleanup (free_current_contents, &name); |
568 | make_cleanup (free_current_contents, &filename); | |
dfcd3bfb | 569 | |
22e722e1 | 570 | if (build_address_symbolic (gdbarch, addr, do_demangle, &name, &offset, |
675dcf4f | 571 | &filename, &line, &unmapped)) |
2f9429ae AC |
572 | { |
573 | do_cleanups (cleanup_chain); | |
9cb709b6 | 574 | return 0; |
2f9429ae | 575 | } |
dfcd3bfb JM |
576 | |
577 | fputs_filtered (leadin, stream); | |
578 | if (unmapped) | |
579 | fputs_filtered ("<*", stream); | |
580 | else | |
581 | fputs_filtered ("<", stream); | |
582 | fputs_filtered (name, stream); | |
583 | if (offset != 0) | |
584 | fprintf_filtered (stream, "+%u", (unsigned int) offset); | |
585 | ||
586 | /* Append source filename and line number if desired. Give specific | |
587 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
588 | if (print_symbol_filename && filename != NULL) | |
589 | { | |
590 | if (line != -1) | |
591 | fprintf_filtered (stream, " at %s:%d", filename, line); | |
592 | else | |
593 | fprintf_filtered (stream, " in %s", filename); | |
594 | } | |
595 | if (unmapped) | |
596 | fputs_filtered ("*>", stream); | |
597 | else | |
598 | fputs_filtered (">", stream); | |
599 | ||
600 | do_cleanups (cleanup_chain); | |
9cb709b6 | 601 | return 1; |
dfcd3bfb JM |
602 | } |
603 | ||
604 | /* Given an address ADDR return all the elements needed to print the | |
0df8b418 | 605 | address in a symbolic form. NAME can be mangled or not depending |
dfcd3bfb | 606 | on DO_DEMANGLE (and also on the asm_demangle global variable, |
0df8b418 MS |
607 | manipulated via ''set print asm-demangle''). Return 0 in case of |
608 | success, when all the info in the OUT paramters is valid. Return 1 | |
609 | otherwise. */ | |
dfcd3bfb | 610 | int |
22e722e1 DJ |
611 | build_address_symbolic (struct gdbarch *gdbarch, |
612 | CORE_ADDR addr, /* IN */ | |
dfcd3bfb JM |
613 | int do_demangle, /* IN */ |
614 | char **name, /* OUT */ | |
615 | int *offset, /* OUT */ | |
616 | char **filename, /* OUT */ | |
617 | int *line, /* OUT */ | |
618 | int *unmapped) /* OUT */ | |
c906108c | 619 | { |
77e371c0 | 620 | struct bound_minimal_symbol msymbol; |
c906108c | 621 | struct symbol *symbol; |
c906108c | 622 | CORE_ADDR name_location = 0; |
714835d5 | 623 | struct obj_section *section = NULL; |
0d5cff50 | 624 | const char *name_temp = ""; |
dfcd3bfb | 625 | |
89c83b10 | 626 | /* Let's say it is mapped (not unmapped). */ |
dfcd3bfb | 627 | *unmapped = 0; |
c906108c | 628 | |
dfcd3bfb | 629 | /* Determine if the address is in an overlay, and whether it is |
675dcf4f | 630 | mapped. */ |
c906108c SS |
631 | if (overlay_debugging) |
632 | { | |
633 | section = find_pc_overlay (addr); | |
634 | if (pc_in_unmapped_range (addr, section)) | |
635 | { | |
dfcd3bfb | 636 | *unmapped = 1; |
c906108c SS |
637 | addr = overlay_mapped_address (addr, section); |
638 | } | |
639 | } | |
640 | ||
c906108c SS |
641 | /* First try to find the address in the symbol table, then |
642 | in the minsyms. Take the closest one. */ | |
643 | ||
644 | /* This is defective in the sense that it only finds text symbols. So | |
645 | really this is kind of pointless--we should make sure that the | |
646 | minimal symbols have everything we need (by changing that we could | |
647 | save some memory, but for many debug format--ELF/DWARF or | |
648 | anything/stabs--it would be inconvenient to eliminate those minimal | |
649 | symbols anyway). */ | |
77e371c0 | 650 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section); |
c906108c SS |
651 | symbol = find_pc_sect_function (addr, section); |
652 | ||
653 | if (symbol) | |
654 | { | |
22e722e1 DJ |
655 | /* If this is a function (i.e. a code address), strip out any |
656 | non-address bits. For instance, display a pointer to the | |
657 | first instruction of a Thumb function as <function>; the | |
658 | second instruction will be <function+2>, even though the | |
659 | pointer is <function+3>. This matches the ISA behavior. */ | |
660 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
661 | ||
c906108c | 662 | name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol)); |
406fc7fb | 663 | if (do_demangle || asm_demangle) |
de5ad195 | 664 | name_temp = SYMBOL_PRINT_NAME (symbol); |
c906108c | 665 | else |
3567439c | 666 | name_temp = SYMBOL_LINKAGE_NAME (symbol); |
c906108c SS |
667 | } |
668 | ||
77e371c0 TT |
669 | if (msymbol.minsym != NULL |
670 | && MSYMBOL_HAS_SIZE (msymbol.minsym) | |
671 | && MSYMBOL_SIZE (msymbol.minsym) == 0 | |
672 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text | |
673 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text_gnu_ifunc | |
674 | && MSYMBOL_TYPE (msymbol.minsym) != mst_file_text) | |
675 | msymbol.minsym = NULL; | |
9cb709b6 | 676 | |
77e371c0 | 677 | if (msymbol.minsym != NULL) |
c906108c | 678 | { |
77e371c0 | 679 | if (BMSYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL) |
c906108c | 680 | { |
fe8400b4 WN |
681 | /* If this is a function (i.e. a code address), strip out any |
682 | non-address bits. For instance, display a pointer to the | |
683 | first instruction of a Thumb function as <function>; the | |
684 | second instruction will be <function+2>, even though the | |
685 | pointer is <function+3>. This matches the ISA behavior. */ | |
77e371c0 TT |
686 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_text |
687 | || MSYMBOL_TYPE (msymbol.minsym) == mst_text_gnu_ifunc | |
688 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_text | |
689 | || MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
fe8400b4 WN |
690 | addr = gdbarch_addr_bits_remove (gdbarch, addr); |
691 | ||
c906108c SS |
692 | /* The msymbol is closer to the address than the symbol; |
693 | use the msymbol instead. */ | |
694 | symbol = 0; | |
77e371c0 | 695 | name_location = BMSYMBOL_VALUE_ADDRESS (msymbol); |
406fc7fb | 696 | if (do_demangle || asm_demangle) |
77e371c0 | 697 | name_temp = MSYMBOL_PRINT_NAME (msymbol.minsym); |
c906108c | 698 | else |
77e371c0 | 699 | name_temp = MSYMBOL_LINKAGE_NAME (msymbol.minsym); |
c906108c SS |
700 | } |
701 | } | |
77e371c0 | 702 | if (symbol == NULL && msymbol.minsym == NULL) |
dfcd3bfb | 703 | return 1; |
c906108c | 704 | |
c906108c SS |
705 | /* If the nearest symbol is too far away, don't print anything symbolic. */ |
706 | ||
707 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
708 | CORE_ADDR. But when we detect unsigned wraparound in the | |
709 | CORE_ADDR math, we ignore this test and print the offset, | |
710 | because addr+max_symbolic_offset has wrapped through the end | |
711 | of the address space back to the beginning, giving bogus comparison. */ | |
712 | if (addr > name_location + max_symbolic_offset | |
713 | && name_location + max_symbolic_offset > name_location) | |
dfcd3bfb | 714 | return 1; |
c906108c | 715 | |
dfcd3bfb JM |
716 | *offset = addr - name_location; |
717 | ||
718 | *name = xstrdup (name_temp); | |
c906108c | 719 | |
c906108c SS |
720 | if (print_symbol_filename) |
721 | { | |
722 | struct symtab_and_line sal; | |
723 | ||
724 | sal = find_pc_sect_line (addr, section, 0); | |
725 | ||
726 | if (sal.symtab) | |
dfcd3bfb | 727 | { |
05cba821 | 728 | *filename = xstrdup (symtab_to_filename_for_display (sal.symtab)); |
dfcd3bfb JM |
729 | *line = sal.line; |
730 | } | |
c906108c | 731 | } |
dfcd3bfb | 732 | return 0; |
c906108c SS |
733 | } |
734 | ||
c906108c SS |
735 | |
736 | /* Print address ADDR symbolically on STREAM. | |
737 | First print it as a number. Then perhaps print | |
738 | <SYMBOL + OFFSET> after the number. */ | |
739 | ||
740 | void | |
5af949e3 UW |
741 | print_address (struct gdbarch *gdbarch, |
742 | CORE_ADDR addr, struct ui_file *stream) | |
c906108c | 743 | { |
5af949e3 | 744 | fputs_filtered (paddress (gdbarch, addr), stream); |
22e722e1 | 745 | print_address_symbolic (gdbarch, addr, stream, asm_demangle, " "); |
c906108c SS |
746 | } |
747 | ||
2b28d209 PP |
748 | /* Return a prefix for instruction address: |
749 | "=> " for current instruction, else " ". */ | |
750 | ||
751 | const char * | |
752 | pc_prefix (CORE_ADDR addr) | |
753 | { | |
754 | if (has_stack_frames ()) | |
755 | { | |
756 | struct frame_info *frame; | |
757 | CORE_ADDR pc; | |
758 | ||
759 | frame = get_selected_frame (NULL); | |
ce406537 | 760 | if (get_frame_pc_if_available (frame, &pc) && pc == addr) |
2b28d209 PP |
761 | return "=> "; |
762 | } | |
763 | return " "; | |
764 | } | |
765 | ||
c906108c SS |
766 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE |
767 | controls whether to print the symbolic name "raw" or demangled. | |
9cb709b6 | 768 | Return non-zero if anything was printed; zero otherwise. */ |
c906108c | 769 | |
9cb709b6 | 770 | int |
edf0c1b7 TT |
771 | print_address_demangle (const struct value_print_options *opts, |
772 | struct gdbarch *gdbarch, CORE_ADDR addr, | |
5af949e3 | 773 | struct ui_file *stream, int do_demangle) |
c906108c | 774 | { |
1d51a733 | 775 | if (opts->addressprint) |
c906108c | 776 | { |
5af949e3 | 777 | fputs_filtered (paddress (gdbarch, addr), stream); |
22e722e1 | 778 | print_address_symbolic (gdbarch, addr, stream, do_demangle, " "); |
c906108c SS |
779 | } |
780 | else | |
781 | { | |
9cb709b6 | 782 | return print_address_symbolic (gdbarch, addr, stream, do_demangle, ""); |
c906108c | 783 | } |
9cb709b6 | 784 | return 1; |
c906108c SS |
785 | } |
786 | \f | |
787 | ||
c906108c SS |
788 | /* Examine data at address ADDR in format FMT. |
789 | Fetch it from memory and print on gdb_stdout. */ | |
790 | ||
791 | static void | |
5d3729b5 | 792 | do_examine (struct format_data fmt, struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 793 | { |
52f0bd74 AC |
794 | char format = 0; |
795 | char size; | |
796 | int count = 1; | |
c906108c | 797 | struct type *val_type = NULL; |
52f0bd74 AC |
798 | int i; |
799 | int maxelts; | |
79a45b7d | 800 | struct value_print_options opts; |
c906108c SS |
801 | |
802 | format = fmt.format; | |
803 | size = fmt.size; | |
804 | count = fmt.count; | |
5d3729b5 | 805 | next_gdbarch = gdbarch; |
c906108c | 806 | next_address = addr; |
c906108c | 807 | |
9a22f0d0 PM |
808 | /* Instruction format implies fetch single bytes |
809 | regardless of the specified size. | |
810 | The case of strings is handled in decode_format, only explicit | |
811 | size operator are not changed to 'b'. */ | |
812 | if (format == 'i') | |
c906108c SS |
813 | size = 'b'; |
814 | ||
5d3729b5 UW |
815 | if (size == 'a') |
816 | { | |
817 | /* Pick the appropriate size for an address. */ | |
818 | if (gdbarch_ptr_bit (next_gdbarch) == 64) | |
819 | size = 'g'; | |
820 | else if (gdbarch_ptr_bit (next_gdbarch) == 32) | |
821 | size = 'w'; | |
822 | else if (gdbarch_ptr_bit (next_gdbarch) == 16) | |
823 | size = 'h'; | |
824 | else | |
825 | /* Bad value for gdbarch_ptr_bit. */ | |
826 | internal_error (__FILE__, __LINE__, | |
827 | _("failed internal consistency check")); | |
828 | } | |
829 | ||
830 | if (size == 'b') | |
df4df182 | 831 | val_type = builtin_type (next_gdbarch)->builtin_int8; |
c906108c | 832 | else if (size == 'h') |
df4df182 | 833 | val_type = builtin_type (next_gdbarch)->builtin_int16; |
c906108c | 834 | else if (size == 'w') |
df4df182 | 835 | val_type = builtin_type (next_gdbarch)->builtin_int32; |
c906108c | 836 | else if (size == 'g') |
df4df182 | 837 | val_type = builtin_type (next_gdbarch)->builtin_int64; |
c906108c | 838 | |
9a22f0d0 PM |
839 | if (format == 's') |
840 | { | |
841 | struct type *char_type = NULL; | |
ad3bbd48 | 842 | |
9a22f0d0 PM |
843 | /* Search for "char16_t" or "char32_t" types or fall back to 8-bit char |
844 | if type is not found. */ | |
845 | if (size == 'h') | |
846 | char_type = builtin_type (next_gdbarch)->builtin_char16; | |
847 | else if (size == 'w') | |
848 | char_type = builtin_type (next_gdbarch)->builtin_char32; | |
849 | if (char_type) | |
850 | val_type = char_type; | |
851 | else | |
852 | { | |
853 | if (size != '\0' && size != 'b') | |
0df8b418 MS |
854 | warning (_("Unable to display strings with " |
855 | "size '%c', using 'b' instead."), size); | |
9a22f0d0 PM |
856 | size = 'b'; |
857 | val_type = builtin_type (next_gdbarch)->builtin_int8; | |
858 | } | |
859 | } | |
860 | ||
c906108c SS |
861 | maxelts = 8; |
862 | if (size == 'w') | |
863 | maxelts = 4; | |
864 | if (size == 'g') | |
865 | maxelts = 2; | |
866 | if (format == 's' || format == 'i') | |
867 | maxelts = 1; | |
868 | ||
79a45b7d TT |
869 | get_formatted_print_options (&opts, format); |
870 | ||
c906108c SS |
871 | /* Print as many objects as specified in COUNT, at most maxelts per line, |
872 | with the address of the next one at the start of each line. */ | |
873 | ||
874 | while (count > 0) | |
875 | { | |
876 | QUIT; | |
2b28d209 PP |
877 | if (format == 'i') |
878 | fputs_filtered (pc_prefix (next_address), gdb_stdout); | |
5af949e3 | 879 | print_address (next_gdbarch, next_address, gdb_stdout); |
c906108c SS |
880 | printf_filtered (":"); |
881 | for (i = maxelts; | |
882 | i > 0 && count > 0; | |
883 | i--, count--) | |
884 | { | |
885 | printf_filtered ("\t"); | |
886 | /* Note that print_formatted sets next_address for the next | |
887 | object. */ | |
888 | last_examine_address = next_address; | |
889 | ||
890 | if (last_examine_value) | |
891 | value_free (last_examine_value); | |
892 | ||
893 | /* The value to be displayed is not fetched greedily. | |
5d51a2db MR |
894 | Instead, to avoid the possibility of a fetched value not |
895 | being used, its retrieval is delayed until the print code | |
c5aa993b JM |
896 | uses it. When examining an instruction stream, the |
897 | disassembler will perform its own memory fetch using just | |
898 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
899 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
900 | is left with the byte sequence from the last complete | |
0df8b418 | 901 | instruction fetched from memory? */ |
00a4c844 | 902 | last_examine_value = value_at_lazy (val_type, next_address); |
c906108c SS |
903 | |
904 | if (last_examine_value) | |
905 | release_value (last_examine_value); | |
906 | ||
79a45b7d | 907 | print_formatted (last_examine_value, size, &opts, gdb_stdout); |
a4642986 MR |
908 | |
909 | /* Display any branch delay slots following the final insn. */ | |
910 | if (format == 'i' && count == 1) | |
911 | count += branch_delay_insns; | |
c906108c SS |
912 | } |
913 | printf_filtered ("\n"); | |
914 | gdb_flush (gdb_stdout); | |
915 | } | |
916 | } | |
917 | \f | |
918 | static void | |
8d89f51a | 919 | validate_format (struct format_data fmt, const char *cmdname) |
c906108c SS |
920 | { |
921 | if (fmt.size != 0) | |
8a3fe4f8 | 922 | error (_("Size letters are meaningless in \"%s\" command."), cmdname); |
c906108c | 923 | if (fmt.count != 1) |
8a3fe4f8 | 924 | error (_("Item count other than 1 is meaningless in \"%s\" command."), |
c906108c | 925 | cmdname); |
ea37ba09 | 926 | if (fmt.format == 'i') |
8a3fe4f8 | 927 | error (_("Format letter \"%c\" is meaningless in \"%s\" command."), |
c906108c SS |
928 | fmt.format, cmdname); |
929 | } | |
930 | ||
1c88ceb1 JK |
931 | /* Parse print command format string into *FMTP and update *EXPP. |
932 | CMDNAME should name the current command. */ | |
933 | ||
934 | void | |
935 | print_command_parse_format (const char **expp, const char *cmdname, | |
936 | struct format_data *fmtp) | |
937 | { | |
938 | const char *exp = *expp; | |
939 | ||
940 | if (exp && *exp == '/') | |
941 | { | |
942 | exp++; | |
943 | *fmtp = decode_format (&exp, last_format, 0); | |
944 | validate_format (*fmtp, cmdname); | |
945 | last_format = fmtp->format; | |
946 | } | |
947 | else | |
948 | { | |
949 | fmtp->count = 1; | |
950 | fmtp->format = 0; | |
951 | fmtp->size = 0; | |
952 | fmtp->raw = 0; | |
953 | } | |
954 | ||
955 | *expp = exp; | |
956 | } | |
957 | ||
958 | /* Print VAL to console according to *FMTP, including recording it to | |
959 | the history. */ | |
960 | ||
961 | void | |
962 | print_value (struct value *val, const struct format_data *fmtp) | |
963 | { | |
964 | struct value_print_options opts; | |
965 | int histindex = record_latest_value (val); | |
966 | ||
967 | annotate_value_history_begin (histindex, value_type (val)); | |
968 | ||
969 | printf_filtered ("$%d = ", histindex); | |
970 | ||
971 | annotate_value_history_value (); | |
972 | ||
973 | get_formatted_print_options (&opts, fmtp->format); | |
974 | opts.raw = fmtp->raw; | |
975 | ||
976 | print_formatted (val, fmtp->size, &opts, gdb_stdout); | |
977 | printf_filtered ("\n"); | |
978 | ||
979 | annotate_value_history_end (); | |
980 | } | |
981 | ||
675dcf4f | 982 | /* Evaluate string EXP as an expression in the current language and |
c5aa993b | 983 | print the resulting value. EXP may contain a format specifier as the |
675dcf4f | 984 | first argument ("/x myvar" for example, to print myvar in hex). */ |
c906108c SS |
985 | |
986 | static void | |
6f937416 | 987 | print_command_1 (const char *exp, int voidprint) |
c906108c | 988 | { |
1c4ff080 | 989 | struct expression *expr; |
27833de7 | 990 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
3d6d86c6 | 991 | struct value *val; |
c906108c | 992 | struct format_data fmt; |
c906108c | 993 | |
1c88ceb1 | 994 | print_command_parse_format (&exp, "print", &fmt); |
c906108c SS |
995 | |
996 | if (exp && *exp) | |
997 | { | |
c906108c | 998 | expr = parse_expression (exp); |
27833de7 | 999 | make_cleanup (free_current_contents, &expr); |
c906108c | 1000 | val = evaluate_expression (expr); |
c906108c SS |
1001 | } |
1002 | else | |
1003 | val = access_value_history (0); | |
1004 | ||
df407dfe AC |
1005 | if (voidprint || (val && value_type (val) && |
1006 | TYPE_CODE (value_type (val)) != TYPE_CODE_VOID)) | |
1c88ceb1 | 1007 | print_value (val, &fmt); |
c906108c | 1008 | |
27833de7 | 1009 | do_cleanups (old_chain); |
c906108c SS |
1010 | } |
1011 | ||
c906108c | 1012 | static void |
fba45db2 | 1013 | print_command (char *exp, int from_tty) |
c906108c | 1014 | { |
e93a8774 | 1015 | print_command_1 (exp, 1); |
c906108c SS |
1016 | } |
1017 | ||
675dcf4f | 1018 | /* Same as print, except it doesn't print void results. */ |
c906108c | 1019 | static void |
fba45db2 | 1020 | call_command (char *exp, int from_tty) |
c906108c | 1021 | { |
e93a8774 | 1022 | print_command_1 (exp, 0); |
c906108c SS |
1023 | } |
1024 | ||
6f937416 PA |
1025 | /* Implementation of the "output" command. */ |
1026 | ||
1027 | static void | |
fba45db2 | 1028 | output_command (char *exp, int from_tty) |
6f937416 PA |
1029 | { |
1030 | output_command_const (exp, from_tty); | |
1031 | } | |
1032 | ||
1033 | /* Like output_command, but takes a const string as argument. */ | |
1034 | ||
1035 | void | |
1036 | output_command_const (const char *exp, int from_tty) | |
c906108c SS |
1037 | { |
1038 | struct expression *expr; | |
52f0bd74 AC |
1039 | struct cleanup *old_chain; |
1040 | char format = 0; | |
3d6d86c6 | 1041 | struct value *val; |
c906108c | 1042 | struct format_data fmt; |
79a45b7d | 1043 | struct value_print_options opts; |
c906108c | 1044 | |
777ea8f1 | 1045 | fmt.size = 0; |
a6bac58e | 1046 | fmt.raw = 0; |
777ea8f1 | 1047 | |
c906108c SS |
1048 | if (exp && *exp == '/') |
1049 | { | |
1050 | exp++; | |
1051 | fmt = decode_format (&exp, 0, 0); | |
1052 | validate_format (fmt, "output"); | |
1053 | format = fmt.format; | |
1054 | } | |
1055 | ||
1056 | expr = parse_expression (exp); | |
c13c43fd | 1057 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
1058 | |
1059 | val = evaluate_expression (expr); | |
1060 | ||
df407dfe | 1061 | annotate_value_begin (value_type (val)); |
c906108c | 1062 | |
79a45b7d | 1063 | get_formatted_print_options (&opts, format); |
a6bac58e | 1064 | opts.raw = fmt.raw; |
79a45b7d | 1065 | print_formatted (val, fmt.size, &opts, gdb_stdout); |
c906108c SS |
1066 | |
1067 | annotate_value_end (); | |
1068 | ||
2acceee2 JM |
1069 | wrap_here (""); |
1070 | gdb_flush (gdb_stdout); | |
1071 | ||
c906108c SS |
1072 | do_cleanups (old_chain); |
1073 | } | |
1074 | ||
c906108c | 1075 | static void |
fba45db2 | 1076 | set_command (char *exp, int from_tty) |
c906108c SS |
1077 | { |
1078 | struct expression *expr = parse_expression (exp); | |
52f0bd74 | 1079 | struct cleanup *old_chain = |
c13c43fd | 1080 | make_cleanup (free_current_contents, &expr); |
ad3bbd48 | 1081 | |
0ece64fd TG |
1082 | if (expr->nelts >= 1) |
1083 | switch (expr->elts[0].opcode) | |
1084 | { | |
1085 | case UNOP_PREINCREMENT: | |
1086 | case UNOP_POSTINCREMENT: | |
1087 | case UNOP_PREDECREMENT: | |
1088 | case UNOP_POSTDECREMENT: | |
1089 | case BINOP_ASSIGN: | |
1090 | case BINOP_ASSIGN_MODIFY: | |
1091 | case BINOP_COMMA: | |
1092 | break; | |
1093 | default: | |
1094 | warning | |
1095 | (_("Expression is not an assignment (and might have no effect)")); | |
1096 | } | |
52b3699b | 1097 | |
c906108c SS |
1098 | evaluate_expression (expr); |
1099 | do_cleanups (old_chain); | |
1100 | } | |
1101 | ||
c906108c | 1102 | static void |
fba45db2 | 1103 | sym_info (char *arg, int from_tty) |
c906108c SS |
1104 | { |
1105 | struct minimal_symbol *msymbol; | |
c5aa993b JM |
1106 | struct objfile *objfile; |
1107 | struct obj_section *osect; | |
c5aa993b JM |
1108 | CORE_ADDR addr, sect_addr; |
1109 | int matches = 0; | |
1110 | unsigned int offset; | |
c906108c SS |
1111 | |
1112 | if (!arg) | |
e2e0b3e5 | 1113 | error_no_arg (_("address")); |
c906108c SS |
1114 | |
1115 | addr = parse_and_eval_address (arg); | |
1116 | ALL_OBJSECTIONS (objfile, osect) | |
c5aa993b | 1117 | { |
94277a38 DJ |
1118 | /* Only process each object file once, even if there's a separate |
1119 | debug file. */ | |
1120 | if (objfile->separate_debug_objfile_backlink) | |
1121 | continue; | |
1122 | ||
714835d5 | 1123 | sect_addr = overlay_mapped_address (addr, osect); |
c906108c | 1124 | |
f1f6aadf PA |
1125 | if (obj_section_addr (osect) <= sect_addr |
1126 | && sect_addr < obj_section_endaddr (osect) | |
7cbd4a93 TT |
1127 | && (msymbol |
1128 | = lookup_minimal_symbol_by_pc_section (sect_addr, osect).minsym)) | |
c5aa993b | 1129 | { |
c14c28ba | 1130 | const char *obj_name, *mapped, *sec_name, *msym_name; |
e2fd701e DE |
1131 | char *loc_string; |
1132 | struct cleanup *old_chain; | |
c14c28ba | 1133 | |
c5aa993b | 1134 | matches = 1; |
77e371c0 | 1135 | offset = sect_addr - MSYMBOL_VALUE_ADDRESS (objfile, msymbol); |
c14c28ba PP |
1136 | mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped"); |
1137 | sec_name = osect->the_bfd_section->name; | |
efd66ac6 | 1138 | msym_name = MSYMBOL_PRINT_NAME (msymbol); |
c14c28ba | 1139 | |
e2fd701e DE |
1140 | /* Don't print the offset if it is zero. |
1141 | We assume there's no need to handle i18n of "sym + offset". */ | |
1142 | if (offset) | |
549ba0f8 | 1143 | loc_string = xstrprintf ("%s + %u", msym_name, offset); |
e2fd701e | 1144 | else |
549ba0f8 | 1145 | loc_string = xstrprintf ("%s", msym_name); |
e2fd701e DE |
1146 | |
1147 | /* Use a cleanup to free loc_string in case the user quits | |
1148 | a pagination request inside printf_filtered. */ | |
1149 | old_chain = make_cleanup (xfree, loc_string); | |
1150 | ||
4262abfb JK |
1151 | gdb_assert (osect->objfile && objfile_name (osect->objfile)); |
1152 | obj_name = objfile_name (osect->objfile); | |
c14c28ba PP |
1153 | |
1154 | if (MULTI_OBJFILE_P ()) | |
1155 | if (pc_in_unmapped_range (addr, osect)) | |
1156 | if (section_is_overlay (osect)) | |
e2fd701e | 1157 | printf_filtered (_("%s in load address range of " |
c14c28ba | 1158 | "%s overlay section %s of %s\n"), |
e2fd701e | 1159 | loc_string, mapped, sec_name, obj_name); |
c14c28ba | 1160 | else |
e2fd701e | 1161 | printf_filtered (_("%s in load address range of " |
c14c28ba | 1162 | "section %s of %s\n"), |
e2fd701e | 1163 | loc_string, sec_name, obj_name); |
c14c28ba PP |
1164 | else |
1165 | if (section_is_overlay (osect)) | |
e2fd701e DE |
1166 | printf_filtered (_("%s in %s overlay section %s of %s\n"), |
1167 | loc_string, mapped, sec_name, obj_name); | |
c14c28ba | 1168 | else |
e2fd701e DE |
1169 | printf_filtered (_("%s in section %s of %s\n"), |
1170 | loc_string, sec_name, obj_name); | |
c5aa993b | 1171 | else |
c14c28ba PP |
1172 | if (pc_in_unmapped_range (addr, osect)) |
1173 | if (section_is_overlay (osect)) | |
e2fd701e | 1174 | printf_filtered (_("%s in load address range of %s overlay " |
c14c28ba | 1175 | "section %s\n"), |
e2fd701e | 1176 | loc_string, mapped, sec_name); |
c14c28ba | 1177 | else |
e2fd701e DE |
1178 | printf_filtered (_("%s in load address range of section %s\n"), |
1179 | loc_string, sec_name); | |
c14c28ba PP |
1180 | else |
1181 | if (section_is_overlay (osect)) | |
e2fd701e DE |
1182 | printf_filtered (_("%s in %s overlay section %s\n"), |
1183 | loc_string, mapped, sec_name); | |
c14c28ba | 1184 | else |
e2fd701e DE |
1185 | printf_filtered (_("%s in section %s\n"), |
1186 | loc_string, sec_name); | |
1187 | ||
1188 | do_cleanups (old_chain); | |
c5aa993b JM |
1189 | } |
1190 | } | |
c906108c | 1191 | if (matches == 0) |
a3f17187 | 1192 | printf_filtered (_("No symbol matches %s.\n"), arg); |
c906108c SS |
1193 | } |
1194 | ||
c906108c | 1195 | static void |
fba45db2 | 1196 | address_info (char *exp, int from_tty) |
c906108c | 1197 | { |
768a979c UW |
1198 | struct gdbarch *gdbarch; |
1199 | int regno; | |
52f0bd74 | 1200 | struct symbol *sym; |
7c7b6655 | 1201 | struct bound_minimal_symbol msymbol; |
52f0bd74 | 1202 | long val; |
714835d5 | 1203 | struct obj_section *section; |
08922a10 | 1204 | CORE_ADDR load_addr, context_pc = 0; |
1993b719 | 1205 | struct field_of_this_result is_a_field_of_this; |
c906108c SS |
1206 | |
1207 | if (exp == 0) | |
8a3fe4f8 | 1208 | error (_("Argument required.")); |
c906108c | 1209 | |
08922a10 | 1210 | sym = lookup_symbol (exp, get_selected_block (&context_pc), VAR_DOMAIN, |
d12307c1 | 1211 | &is_a_field_of_this).symbol; |
c906108c SS |
1212 | if (sym == NULL) |
1213 | { | |
1993b719 | 1214 | if (is_a_field_of_this.type != NULL) |
c906108c SS |
1215 | { |
1216 | printf_filtered ("Symbol \""); | |
1217 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1218 | current_language->la_language, DMGL_ANSI); | |
e2b23ee9 AF |
1219 | printf_filtered ("\" is a field of the local class variable "); |
1220 | if (current_language->la_language == language_objc) | |
2625d86c | 1221 | printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */ |
e2b23ee9 | 1222 | else |
2625d86c | 1223 | printf_filtered ("`this'\n"); |
c906108c SS |
1224 | return; |
1225 | } | |
1226 | ||
7c7b6655 | 1227 | msymbol = lookup_bound_minimal_symbol (exp); |
c906108c | 1228 | |
7c7b6655 | 1229 | if (msymbol.minsym != NULL) |
c906108c | 1230 | { |
7c7b6655 | 1231 | struct objfile *objfile = msymbol.objfile; |
e27d198c TT |
1232 | |
1233 | gdbarch = get_objfile_arch (objfile); | |
77e371c0 | 1234 | load_addr = BMSYMBOL_VALUE_ADDRESS (msymbol); |
c906108c SS |
1235 | |
1236 | printf_filtered ("Symbol \""); | |
1237 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1238 | current_language->la_language, DMGL_ANSI); | |
1239 | printf_filtered ("\" is at "); | |
5af949e3 | 1240 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
c906108c | 1241 | printf_filtered (" in a file compiled without debugging"); |
efd66ac6 | 1242 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
c906108c SS |
1243 | if (section_is_overlay (section)) |
1244 | { | |
1245 | load_addr = overlay_unmapped_address (load_addr, section); | |
1246 | printf_filtered (",\n -- loaded at "); | |
5af949e3 | 1247 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1248 | printf_filtered (" in overlay section %s", |
1249 | section->the_bfd_section->name); | |
c906108c SS |
1250 | } |
1251 | printf_filtered (".\n"); | |
1252 | } | |
1253 | else | |
8a3fe4f8 | 1254 | error (_("No symbol \"%s\" in current context."), exp); |
c906108c SS |
1255 | return; |
1256 | } | |
1257 | ||
1258 | printf_filtered ("Symbol \""); | |
3567439c | 1259 | fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym), |
c906108c SS |
1260 | current_language->la_language, DMGL_ANSI); |
1261 | printf_filtered ("\" is "); | |
c5aa993b | 1262 | val = SYMBOL_VALUE (sym); |
1994afbf DE |
1263 | if (SYMBOL_OBJFILE_OWNED (sym)) |
1264 | section = SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym); | |
1265 | else | |
1266 | section = NULL; | |
08be3fe3 | 1267 | gdbarch = symbol_arch (sym); |
c906108c | 1268 | |
24d6c2a0 TT |
1269 | if (SYMBOL_COMPUTED_OPS (sym) != NULL) |
1270 | { | |
1271 | SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, context_pc, | |
1272 | gdb_stdout); | |
1273 | printf_filtered (".\n"); | |
1274 | return; | |
1275 | } | |
1276 | ||
c906108c SS |
1277 | switch (SYMBOL_CLASS (sym)) |
1278 | { | |
1279 | case LOC_CONST: | |
1280 | case LOC_CONST_BYTES: | |
1281 | printf_filtered ("constant"); | |
1282 | break; | |
1283 | ||
1284 | case LOC_LABEL: | |
1285 | printf_filtered ("a label at address "); | |
5af949e3 UW |
1286 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
1287 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); | |
c906108c SS |
1288 | if (section_is_overlay (section)) |
1289 | { | |
1290 | load_addr = overlay_unmapped_address (load_addr, section); | |
1291 | printf_filtered (",\n -- loaded at "); | |
5af949e3 | 1292 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1293 | printf_filtered (" in overlay section %s", |
1294 | section->the_bfd_section->name); | |
c906108c SS |
1295 | } |
1296 | break; | |
1297 | ||
4c2df51b | 1298 | case LOC_COMPUTED: |
24d6c2a0 | 1299 | gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method")); |
4c2df51b | 1300 | |
c906108c | 1301 | case LOC_REGISTER: |
768a979c UW |
1302 | /* GDBARCH is the architecture associated with the objfile the symbol |
1303 | is defined in; the target architecture may be different, and may | |
1304 | provide additional registers. However, we do not know the target | |
1305 | architecture at this point. We assume the objfile architecture | |
1306 | will contain all the standard registers that occur in debug info | |
1307 | in that objfile. */ | |
1308 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
1309 | ||
2a2d4dc3 AS |
1310 | if (SYMBOL_IS_ARGUMENT (sym)) |
1311 | printf_filtered (_("an argument in register %s"), | |
768a979c | 1312 | gdbarch_register_name (gdbarch, regno)); |
2a2d4dc3 AS |
1313 | else |
1314 | printf_filtered (_("a variable in register %s"), | |
768a979c | 1315 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1316 | break; |
1317 | ||
1318 | case LOC_STATIC: | |
a3f17187 | 1319 | printf_filtered (_("static storage at address ")); |
5af949e3 UW |
1320 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
1321 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); | |
c906108c SS |
1322 | if (section_is_overlay (section)) |
1323 | { | |
1324 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1325 | printf_filtered (_(",\n -- loaded at ")); |
5af949e3 | 1326 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1327 | printf_filtered (_(" in overlay section %s"), |
1328 | section->the_bfd_section->name); | |
c906108c SS |
1329 | } |
1330 | break; | |
1331 | ||
c906108c | 1332 | case LOC_REGPARM_ADDR: |
768a979c UW |
1333 | /* Note comment at LOC_REGISTER. */ |
1334 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
675dcf4f | 1335 | printf_filtered (_("address of an argument in register %s"), |
768a979c | 1336 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1337 | break; |
1338 | ||
1339 | case LOC_ARG: | |
a3f17187 | 1340 | printf_filtered (_("an argument at offset %ld"), val); |
c906108c SS |
1341 | break; |
1342 | ||
c906108c | 1343 | case LOC_LOCAL: |
a3f17187 | 1344 | printf_filtered (_("a local variable at frame offset %ld"), val); |
c906108c SS |
1345 | break; |
1346 | ||
1347 | case LOC_REF_ARG: | |
a3f17187 | 1348 | printf_filtered (_("a reference argument at offset %ld"), val); |
c906108c SS |
1349 | break; |
1350 | ||
c906108c | 1351 | case LOC_TYPEDEF: |
a3f17187 | 1352 | printf_filtered (_("a typedef")); |
c906108c SS |
1353 | break; |
1354 | ||
1355 | case LOC_BLOCK: | |
a3f17187 | 1356 | printf_filtered (_("a function at address ")); |
675dcf4f | 1357 | load_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); |
5af949e3 | 1358 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
c906108c SS |
1359 | if (section_is_overlay (section)) |
1360 | { | |
1361 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1362 | printf_filtered (_(",\n -- loaded at ")); |
5af949e3 | 1363 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1364 | printf_filtered (_(" in overlay section %s"), |
1365 | section->the_bfd_section->name); | |
c906108c SS |
1366 | } |
1367 | break; | |
1368 | ||
1369 | case LOC_UNRESOLVED: | |
1370 | { | |
e27d198c | 1371 | struct bound_minimal_symbol msym; |
c906108c | 1372 | |
e27d198c TT |
1373 | msym = lookup_minimal_symbol_and_objfile (SYMBOL_LINKAGE_NAME (sym)); |
1374 | if (msym.minsym == NULL) | |
c906108c SS |
1375 | printf_filtered ("unresolved"); |
1376 | else | |
1377 | { | |
efd66ac6 | 1378 | section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
e0740f77 JK |
1379 | |
1380 | if (section | |
1381 | && (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0) | |
5382cfab PW |
1382 | { |
1383 | load_addr = MSYMBOL_VALUE_RAW_ADDRESS (msym.minsym); | |
1384 | printf_filtered (_("a thread-local variable at offset %s " | |
1385 | "in the thread-local storage for `%s'"), | |
1386 | paddress (gdbarch, load_addr), | |
1387 | objfile_name (section->objfile)); | |
1388 | } | |
e0740f77 | 1389 | else |
c906108c | 1390 | { |
5382cfab | 1391 | load_addr = BMSYMBOL_VALUE_ADDRESS (msym); |
e0740f77 | 1392 | printf_filtered (_("static storage at address ")); |
5af949e3 | 1393 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
e0740f77 JK |
1394 | if (section_is_overlay (section)) |
1395 | { | |
1396 | load_addr = overlay_unmapped_address (load_addr, section); | |
1397 | printf_filtered (_(",\n -- loaded at ")); | |
5af949e3 | 1398 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
e0740f77 JK |
1399 | printf_filtered (_(" in overlay section %s"), |
1400 | section->the_bfd_section->name); | |
1401 | } | |
c906108c SS |
1402 | } |
1403 | } | |
1404 | } | |
1405 | break; | |
1406 | ||
c906108c | 1407 | case LOC_OPTIMIZED_OUT: |
a3f17187 | 1408 | printf_filtered (_("optimized out")); |
c906108c | 1409 | break; |
c5aa993b | 1410 | |
c906108c | 1411 | default: |
a3f17187 | 1412 | printf_filtered (_("of unknown (botched) type")); |
c906108c SS |
1413 | break; |
1414 | } | |
1415 | printf_filtered (".\n"); | |
1416 | } | |
1417 | \f | |
675dcf4f MK |
1418 | |
1419 | static void | |
fba45db2 | 1420 | x_command (char *exp, int from_tty) |
c906108c SS |
1421 | { |
1422 | struct expression *expr; | |
1423 | struct format_data fmt; | |
1424 | struct cleanup *old_chain; | |
1425 | struct value *val; | |
1426 | ||
a6bac58e | 1427 | fmt.format = last_format ? last_format : 'x'; |
c906108c SS |
1428 | fmt.size = last_size; |
1429 | fmt.count = 1; | |
a6bac58e | 1430 | fmt.raw = 0; |
c906108c SS |
1431 | |
1432 | if (exp && *exp == '/') | |
1433 | { | |
6f937416 PA |
1434 | const char *tmp = exp + 1; |
1435 | ||
1436 | fmt = decode_format (&tmp, last_format, last_size); | |
1437 | exp = (char *) tmp; | |
c906108c SS |
1438 | } |
1439 | ||
1440 | /* If we have an expression, evaluate it and use it as the address. */ | |
1441 | ||
1442 | if (exp != 0 && *exp != 0) | |
1443 | { | |
1444 | expr = parse_expression (exp); | |
675dcf4f MK |
1445 | /* Cause expression not to be there any more if this command is |
1446 | repeated with Newline. But don't clobber a user-defined | |
1447 | command's definition. */ | |
c906108c SS |
1448 | if (from_tty) |
1449 | *exp = 0; | |
c13c43fd | 1450 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c | 1451 | val = evaluate_expression (expr); |
df407dfe | 1452 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_REF) |
e1c34c5d | 1453 | val = coerce_ref (val); |
c906108c | 1454 | /* In rvalue contexts, such as this, functions are coerced into |
c5aa993b | 1455 | pointers to functions. This makes "x/i main" work. */ |
c0d8fd9a | 1456 | if (/* last_format == 'i' && */ |
df407dfe | 1457 | TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC |
c5aa993b | 1458 | && VALUE_LVAL (val) == lval_memory) |
42ae5230 | 1459 | next_address = value_address (val); |
c906108c | 1460 | else |
1aa20aa8 | 1461 | next_address = value_as_address (val); |
5d3729b5 UW |
1462 | |
1463 | next_gdbarch = expr->gdbarch; | |
c906108c SS |
1464 | do_cleanups (old_chain); |
1465 | } | |
1466 | ||
5d3729b5 UW |
1467 | if (!next_gdbarch) |
1468 | error_no_arg (_("starting display address")); | |
1469 | ||
1470 | do_examine (fmt, next_gdbarch, next_address); | |
c906108c | 1471 | |
675dcf4f | 1472 | /* If the examine succeeds, we remember its size and format for next |
9a22f0d0 PM |
1473 | time. Set last_size to 'b' for strings. */ |
1474 | if (fmt.format == 's') | |
1475 | last_size = 'b'; | |
1476 | else | |
1477 | last_size = fmt.size; | |
c906108c SS |
1478 | last_format = fmt.format; |
1479 | ||
0df8b418 | 1480 | /* Set a couple of internal variables if appropriate. */ |
c906108c SS |
1481 | if (last_examine_value) |
1482 | { | |
1483 | /* Make last address examined available to the user as $_. Use | |
c5aa993b | 1484 | the correct pointer type. */ |
4478b372 | 1485 | struct type *pointer_type |
df407dfe | 1486 | = lookup_pointer_type (value_type (last_examine_value)); |
c906108c | 1487 | set_internalvar (lookup_internalvar ("_"), |
4478b372 JB |
1488 | value_from_pointer (pointer_type, |
1489 | last_examine_address)); | |
c5aa993b | 1490 | |
675dcf4f MK |
1491 | /* Make contents of last address examined available to the user |
1492 | as $__. If the last value has not been fetched from memory | |
1493 | then don't fetch it now; instead mark it by voiding the $__ | |
1494 | variable. */ | |
d69fe07e | 1495 | if (value_lazy (last_examine_value)) |
4fa62494 | 1496 | clear_internalvar (lookup_internalvar ("__")); |
c906108c SS |
1497 | else |
1498 | set_internalvar (lookup_internalvar ("__"), last_examine_value); | |
1499 | } | |
1500 | } | |
c906108c | 1501 | \f |
c5aa993b | 1502 | |
c906108c SS |
1503 | /* Add an expression to the auto-display chain. |
1504 | Specify the expression. */ | |
1505 | ||
1506 | static void | |
6f937416 | 1507 | display_command (char *arg, int from_tty) |
c906108c SS |
1508 | { |
1509 | struct format_data fmt; | |
52f0bd74 | 1510 | struct expression *expr; |
fe978cb0 | 1511 | struct display *newobj; |
6f937416 | 1512 | const char *exp = arg; |
c906108c | 1513 | |
7bd0be3a | 1514 | if (exp == 0) |
c906108c | 1515 | { |
7bd0be3a AB |
1516 | do_displays (); |
1517 | return; | |
1518 | } | |
c906108c | 1519 | |
7bd0be3a AB |
1520 | if (*exp == '/') |
1521 | { | |
1522 | exp++; | |
1523 | fmt = decode_format (&exp, 0, 0); | |
1524 | if (fmt.size && fmt.format == 0) | |
1525 | fmt.format = 'x'; | |
1526 | if (fmt.format == 'i' || fmt.format == 's') | |
1527 | fmt.size = 'b'; | |
1528 | } | |
1529 | else | |
1530 | { | |
1531 | fmt.format = 0; | |
1532 | fmt.size = 0; | |
1533 | fmt.count = 0; | |
1534 | fmt.raw = 0; | |
1535 | } | |
c906108c | 1536 | |
7bd0be3a AB |
1537 | innermost_block = NULL; |
1538 | expr = parse_expression (exp); | |
c906108c | 1539 | |
8d749320 | 1540 | newobj = XNEW (struct display); |
c906108c | 1541 | |
7bd0be3a AB |
1542 | newobj->exp_string = xstrdup (exp); |
1543 | newobj->exp = expr; | |
1544 | newobj->block = innermost_block; | |
1545 | newobj->pspace = current_program_space; | |
1546 | newobj->next = display_chain; | |
1547 | newobj->number = ++display_number; | |
1548 | newobj->format = fmt; | |
1549 | newobj->enabled_p = 1; | |
1550 | display_chain = newobj; | |
c906108c | 1551 | |
7bd0be3a AB |
1552 | if (from_tty) |
1553 | do_one_display (newobj); | |
c906108c | 1554 | |
7bd0be3a | 1555 | dont_repeat (); |
c906108c SS |
1556 | } |
1557 | ||
1558 | static void | |
fba45db2 | 1559 | free_display (struct display *d) |
c906108c | 1560 | { |
fa8a61dc | 1561 | xfree (d->exp_string); |
b8c9b27d KB |
1562 | xfree (d->exp); |
1563 | xfree (d); | |
c906108c SS |
1564 | } |
1565 | ||
675dcf4f MK |
1566 | /* Clear out the display_chain. Done when new symtabs are loaded, |
1567 | since this invalidates the types stored in many expressions. */ | |
c906108c SS |
1568 | |
1569 | void | |
fba45db2 | 1570 | clear_displays (void) |
c906108c | 1571 | { |
52f0bd74 | 1572 | struct display *d; |
c906108c SS |
1573 | |
1574 | while ((d = display_chain) != NULL) | |
1575 | { | |
c906108c | 1576 | display_chain = d->next; |
fa8a61dc | 1577 | free_display (d); |
c906108c SS |
1578 | } |
1579 | } | |
1580 | ||
3c3fe74c | 1581 | /* Delete the auto-display DISPLAY. */ |
c906108c SS |
1582 | |
1583 | static void | |
3c3fe74c | 1584 | delete_display (struct display *display) |
c906108c | 1585 | { |
3c3fe74c | 1586 | struct display *d; |
c906108c | 1587 | |
3c3fe74c | 1588 | gdb_assert (display != NULL); |
c906108c | 1589 | |
3c3fe74c PA |
1590 | if (display_chain == display) |
1591 | display_chain = display->next; | |
1592 | ||
1593 | ALL_DISPLAYS (d) | |
1594 | if (d->next == display) | |
c906108c | 1595 | { |
3c3fe74c PA |
1596 | d->next = display->next; |
1597 | break; | |
c906108c | 1598 | } |
3c3fe74c PA |
1599 | |
1600 | free_display (display); | |
c906108c SS |
1601 | } |
1602 | ||
c9174737 PA |
1603 | /* Call FUNCTION on each of the displays whose numbers are given in |
1604 | ARGS. DATA is passed unmodified to FUNCTION. */ | |
c906108c SS |
1605 | |
1606 | static void | |
c9174737 PA |
1607 | map_display_numbers (char *args, |
1608 | void (*function) (struct display *, | |
1609 | void *), | |
1610 | void *data) | |
c906108c | 1611 | { |
197f0a60 | 1612 | struct get_number_or_range_state state; |
c9174737 | 1613 | int num; |
c906108c | 1614 | |
c9174737 PA |
1615 | if (args == NULL) |
1616 | error_no_arg (_("one or more display numbers")); | |
c906108c | 1617 | |
197f0a60 | 1618 | init_number_or_range (&state, args); |
c9174737 | 1619 | |
197f0a60 | 1620 | while (!state.finished) |
c906108c | 1621 | { |
e799154c | 1622 | const char *p = state.string; |
c906108c | 1623 | |
197f0a60 | 1624 | num = get_number_or_range (&state); |
3c3fe74c PA |
1625 | if (num == 0) |
1626 | warning (_("bad display number at or near '%s'"), p); | |
1627 | else | |
1628 | { | |
c9174737 | 1629 | struct display *d, *tmp; |
c906108c | 1630 | |
c9174737 | 1631 | ALL_DISPLAYS_SAFE (d, tmp) |
3c3fe74c PA |
1632 | if (d->number == num) |
1633 | break; | |
1634 | if (d == NULL) | |
1635 | printf_unfiltered (_("No display number %d.\n"), num); | |
1636 | else | |
c9174737 | 1637 | function (d, data); |
3c3fe74c | 1638 | } |
c906108c | 1639 | } |
c9174737 PA |
1640 | } |
1641 | ||
1642 | /* Callback for map_display_numbers, that deletes a display. */ | |
1643 | ||
1644 | static void | |
1645 | do_delete_display (struct display *d, void *data) | |
1646 | { | |
1647 | delete_display (d); | |
1648 | } | |
1649 | ||
1650 | /* "undisplay" command. */ | |
1651 | ||
1652 | static void | |
1653 | undisplay_command (char *args, int from_tty) | |
1654 | { | |
c9174737 PA |
1655 | if (args == NULL) |
1656 | { | |
1657 | if (query (_("Delete all auto-display expressions? "))) | |
1658 | clear_displays (); | |
1659 | dont_repeat (); | |
1660 | return; | |
1661 | } | |
1662 | ||
1663 | map_display_numbers (args, do_delete_display, NULL); | |
c906108c SS |
1664 | dont_repeat (); |
1665 | } | |
1666 | ||
1667 | /* Display a single auto-display. | |
1668 | Do nothing if the display cannot be printed in the current context, | |
0df8b418 | 1669 | or if the display is disabled. */ |
c906108c SS |
1670 | |
1671 | static void | |
fba45db2 | 1672 | do_one_display (struct display *d) |
c906108c | 1673 | { |
af6e93b2 | 1674 | struct cleanup *old_chain; |
c906108c SS |
1675 | int within_current_scope; |
1676 | ||
b5de0fa7 | 1677 | if (d->enabled_p == 0) |
c906108c SS |
1678 | return; |
1679 | ||
704e9165 UW |
1680 | /* The expression carries the architecture that was used at parse time. |
1681 | This is a problem if the expression depends on architecture features | |
1682 | (e.g. register numbers), and the current architecture is now different. | |
1683 | For example, a display statement like "display/i $pc" is expected to | |
1684 | display the PC register of the current architecture, not the arch at | |
1685 | the time the display command was given. Therefore, we re-parse the | |
1686 | expression if the current architecture has changed. */ | |
1687 | if (d->exp != NULL && d->exp->gdbarch != get_current_arch ()) | |
1688 | { | |
1689 | xfree (d->exp); | |
1690 | d->exp = NULL; | |
1691 | d->block = NULL; | |
1692 | } | |
1693 | ||
a3247a22 PP |
1694 | if (d->exp == NULL) |
1695 | { | |
ad3bbd48 | 1696 | |
492d29ea | 1697 | TRY |
a3247a22 PP |
1698 | { |
1699 | innermost_block = NULL; | |
1700 | d->exp = parse_expression (d->exp_string); | |
1701 | d->block = innermost_block; | |
1702 | } | |
492d29ea | 1703 | CATCH (ex, RETURN_MASK_ALL) |
a3247a22 PP |
1704 | { |
1705 | /* Can't re-parse the expression. Disable this display item. */ | |
1706 | d->enabled_p = 0; | |
1707 | warning (_("Unable to display \"%s\": %s"), | |
1708 | d->exp_string, ex.message); | |
1709 | return; | |
1710 | } | |
492d29ea | 1711 | END_CATCH |
a3247a22 PP |
1712 | } |
1713 | ||
c906108c | 1714 | if (d->block) |
6c95b8df PA |
1715 | { |
1716 | if (d->pspace == current_program_space) | |
1717 | within_current_scope = contained_in (get_selected_block (0), d->block); | |
1718 | else | |
1719 | within_current_scope = 0; | |
1720 | } | |
c906108c SS |
1721 | else |
1722 | within_current_scope = 1; | |
1723 | if (!within_current_scope) | |
1724 | return; | |
1725 | ||
9d8fa392 | 1726 | old_chain = make_cleanup_restore_integer (¤t_display_number); |
c906108c SS |
1727 | current_display_number = d->number; |
1728 | ||
1729 | annotate_display_begin (); | |
1730 | printf_filtered ("%d", d->number); | |
1731 | annotate_display_number_end (); | |
1732 | printf_filtered (": "); | |
1733 | if (d->format.size) | |
1734 | { | |
c906108c SS |
1735 | |
1736 | annotate_display_format (); | |
1737 | ||
1738 | printf_filtered ("x/"); | |
1739 | if (d->format.count != 1) | |
1740 | printf_filtered ("%d", d->format.count); | |
1741 | printf_filtered ("%c", d->format.format); | |
1742 | if (d->format.format != 'i' && d->format.format != 's') | |
1743 | printf_filtered ("%c", d->format.size); | |
1744 | printf_filtered (" "); | |
1745 | ||
1746 | annotate_display_expression (); | |
1747 | ||
fa8a61dc | 1748 | puts_filtered (d->exp_string); |
c906108c SS |
1749 | annotate_display_expression_end (); |
1750 | ||
6a2eb474 | 1751 | if (d->format.count != 1 || d->format.format == 'i') |
c906108c SS |
1752 | printf_filtered ("\n"); |
1753 | else | |
1754 | printf_filtered (" "); | |
c5aa993b | 1755 | |
c906108c SS |
1756 | annotate_display_value (); |
1757 | ||
492d29ea | 1758 | TRY |
9d8fa392 PA |
1759 | { |
1760 | struct value *val; | |
1761 | CORE_ADDR addr; | |
1762 | ||
1763 | val = evaluate_expression (d->exp); | |
1764 | addr = value_as_address (val); | |
1765 | if (d->format.format == 'i') | |
1766 | addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr); | |
1767 | do_examine (d->format, d->exp->gdbarch, addr); | |
1768 | } | |
492d29ea PA |
1769 | CATCH (ex, RETURN_MASK_ERROR) |
1770 | { | |
1771 | fprintf_filtered (gdb_stdout, _("<error: %s>\n"), ex.message); | |
1772 | } | |
1773 | END_CATCH | |
c906108c SS |
1774 | } |
1775 | else | |
1776 | { | |
79a45b7d TT |
1777 | struct value_print_options opts; |
1778 | ||
c906108c SS |
1779 | annotate_display_format (); |
1780 | ||
1781 | if (d->format.format) | |
1782 | printf_filtered ("/%c ", d->format.format); | |
1783 | ||
1784 | annotate_display_expression (); | |
1785 | ||
fa8a61dc | 1786 | puts_filtered (d->exp_string); |
c906108c SS |
1787 | annotate_display_expression_end (); |
1788 | ||
1789 | printf_filtered (" = "); | |
1790 | ||
1791 | annotate_display_expression (); | |
1792 | ||
79a45b7d | 1793 | get_formatted_print_options (&opts, d->format.format); |
a6bac58e | 1794 | opts.raw = d->format.raw; |
9d8fa392 | 1795 | |
492d29ea | 1796 | TRY |
9d8fa392 PA |
1797 | { |
1798 | struct value *val; | |
1799 | ||
1800 | val = evaluate_expression (d->exp); | |
1801 | print_formatted (val, d->format.size, &opts, gdb_stdout); | |
1802 | } | |
492d29ea PA |
1803 | CATCH (ex, RETURN_MASK_ERROR) |
1804 | { | |
1805 | fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.message); | |
1806 | } | |
1807 | END_CATCH | |
1808 | ||
c906108c SS |
1809 | printf_filtered ("\n"); |
1810 | } | |
1811 | ||
1812 | annotate_display_end (); | |
1813 | ||
1814 | gdb_flush (gdb_stdout); | |
9d8fa392 | 1815 | do_cleanups (old_chain); |
c906108c SS |
1816 | } |
1817 | ||
1818 | /* Display all of the values on the auto-display chain which can be | |
1819 | evaluated in the current scope. */ | |
1820 | ||
1821 | void | |
fba45db2 | 1822 | do_displays (void) |
c906108c | 1823 | { |
52f0bd74 | 1824 | struct display *d; |
c906108c SS |
1825 | |
1826 | for (d = display_chain; d; d = d->next) | |
1827 | do_one_display (d); | |
1828 | } | |
1829 | ||
1830 | /* Delete the auto-display which we were in the process of displaying. | |
1831 | This is done when there is an error or a signal. */ | |
1832 | ||
1833 | void | |
fba45db2 | 1834 | disable_display (int num) |
c906108c | 1835 | { |
52f0bd74 | 1836 | struct display *d; |
c906108c SS |
1837 | |
1838 | for (d = display_chain; d; d = d->next) | |
1839 | if (d->number == num) | |
1840 | { | |
b5de0fa7 | 1841 | d->enabled_p = 0; |
c906108c SS |
1842 | return; |
1843 | } | |
a3f17187 | 1844 | printf_unfiltered (_("No display number %d.\n"), num); |
c906108c | 1845 | } |
c5aa993b | 1846 | |
c906108c | 1847 | void |
fba45db2 | 1848 | disable_current_display (void) |
c906108c SS |
1849 | { |
1850 | if (current_display_number >= 0) | |
1851 | { | |
1852 | disable_display (current_display_number); | |
3e43a32a MS |
1853 | fprintf_unfiltered (gdb_stderr, |
1854 | _("Disabling display %d to " | |
1855 | "avoid infinite recursion.\n"), | |
c5aa993b | 1856 | current_display_number); |
c906108c SS |
1857 | } |
1858 | current_display_number = -1; | |
1859 | } | |
1860 | ||
1861 | static void | |
fba45db2 | 1862 | display_info (char *ignore, int from_tty) |
c906108c | 1863 | { |
52f0bd74 | 1864 | struct display *d; |
c906108c SS |
1865 | |
1866 | if (!display_chain) | |
a3f17187 | 1867 | printf_unfiltered (_("There are no auto-display expressions now.\n")); |
c906108c | 1868 | else |
a3f17187 AC |
1869 | printf_filtered (_("Auto-display expressions now in effect:\n\ |
1870 | Num Enb Expression\n")); | |
c906108c SS |
1871 | |
1872 | for (d = display_chain; d; d = d->next) | |
1873 | { | |
b5de0fa7 | 1874 | printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]); |
c906108c SS |
1875 | if (d->format.size) |
1876 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
c5aa993b | 1877 | d->format.format); |
c906108c SS |
1878 | else if (d->format.format) |
1879 | printf_filtered ("/%c ", d->format.format); | |
fa8a61dc | 1880 | puts_filtered (d->exp_string); |
ae767bfb | 1881 | if (d->block && !contained_in (get_selected_block (0), d->block)) |
a3f17187 | 1882 | printf_filtered (_(" (cannot be evaluated in the current context)")); |
c906108c SS |
1883 | printf_filtered ("\n"); |
1884 | gdb_flush (gdb_stdout); | |
1885 | } | |
1886 | } | |
1887 | ||
c9174737 PA |
1888 | /* Callback fo map_display_numbers, that enables or disables the |
1889 | passed in display D. */ | |
1890 | ||
c906108c | 1891 | static void |
c9174737 | 1892 | do_enable_disable_display (struct display *d, void *data) |
c906108c | 1893 | { |
c9174737 PA |
1894 | d->enabled_p = *(int *) data; |
1895 | } | |
c906108c | 1896 | |
c9174737 PA |
1897 | /* Implamentation of both the "disable display" and "enable display" |
1898 | commands. ENABLE decides what to do. */ | |
1899 | ||
1900 | static void | |
1901 | enable_disable_display_command (char *args, int from_tty, int enable) | |
1902 | { | |
1903 | if (args == NULL) | |
c906108c | 1904 | { |
c9174737 | 1905 | struct display *d; |
c5aa993b | 1906 | |
c9174737 PA |
1907 | ALL_DISPLAYS (d) |
1908 | d->enabled_p = enable; | |
1909 | return; | |
1910 | } | |
c5aa993b | 1911 | |
c9174737 | 1912 | map_display_numbers (args, do_enable_disable_display, &enable); |
c906108c SS |
1913 | } |
1914 | ||
c9174737 PA |
1915 | /* The "enable display" command. */ |
1916 | ||
c906108c | 1917 | static void |
c9174737 | 1918 | enable_display_command (char *args, int from_tty) |
c906108c | 1919 | { |
c9174737 PA |
1920 | enable_disable_display_command (args, from_tty, 1); |
1921 | } | |
c5aa993b | 1922 | |
c9174737 | 1923 | /* The "disable display" command. */ |
c906108c | 1924 | |
c9174737 PA |
1925 | static void |
1926 | disable_display_command (char *args, int from_tty) | |
1927 | { | |
1928 | enable_disable_display_command (args, from_tty, 0); | |
c906108c | 1929 | } |
a3247a22 | 1930 | |
a3247a22 PP |
1931 | /* display_chain items point to blocks and expressions. Some expressions in |
1932 | turn may point to symbols. | |
1933 | Both symbols and blocks are obstack_alloc'd on objfile_stack, and are | |
1934 | obstack_free'd when a shared library is unloaded. | |
1935 | Clear pointers that are about to become dangling. | |
1936 | Both .exp and .block fields will be restored next time we need to display | |
1937 | an item by re-parsing .exp_string field in the new execution context. */ | |
1938 | ||
1939 | static void | |
63644780 | 1940 | clear_dangling_display_expressions (struct objfile *objfile) |
a3247a22 PP |
1941 | { |
1942 | struct display *d; | |
63644780 | 1943 | struct program_space *pspace; |
a3247a22 | 1944 | |
c0201579 JK |
1945 | /* With no symbol file we cannot have a block or expression from it. */ |
1946 | if (objfile == NULL) | |
1947 | return; | |
63644780 | 1948 | pspace = objfile->pspace; |
c0201579 | 1949 | if (objfile->separate_debug_objfile_backlink) |
63644780 NB |
1950 | { |
1951 | objfile = objfile->separate_debug_objfile_backlink; | |
1952 | gdb_assert (objfile->pspace == pspace); | |
1953 | } | |
c0201579 JK |
1954 | |
1955 | for (d = display_chain; d != NULL; d = d->next) | |
a3247a22 | 1956 | { |
63644780 | 1957 | if (d->pspace != pspace) |
c0201579 JK |
1958 | continue; |
1959 | ||
1960 | if (lookup_objfile_from_block (d->block) == objfile | |
1961 | || (d->exp && exp_uses_objfile (d->exp, objfile))) | |
1962 | { | |
1963 | xfree (d->exp); | |
1964 | d->exp = NULL; | |
1965 | d->block = NULL; | |
1966 | } | |
a3247a22 PP |
1967 | } |
1968 | } | |
c906108c | 1969 | \f |
c5aa993b | 1970 | |
675dcf4f | 1971 | /* Print the value in stack frame FRAME of a variable specified by a |
aad95b57 TT |
1972 | struct symbol. NAME is the name to print; if NULL then VAR's print |
1973 | name will be used. STREAM is the ui_file on which to print the | |
1974 | value. INDENT specifies the number of indent levels to print | |
8f043999 JK |
1975 | before printing the variable name. |
1976 | ||
1977 | This function invalidates FRAME. */ | |
c906108c SS |
1978 | |
1979 | void | |
aad95b57 TT |
1980 | print_variable_and_value (const char *name, struct symbol *var, |
1981 | struct frame_info *frame, | |
1982 | struct ui_file *stream, int indent) | |
c906108c | 1983 | { |
c906108c | 1984 | |
aad95b57 TT |
1985 | if (!name) |
1986 | name = SYMBOL_PRINT_NAME (var); | |
1987 | ||
1988 | fprintf_filtered (stream, "%s%s = ", n_spaces (2 * indent), name); | |
492d29ea | 1989 | TRY |
0f6a939d PM |
1990 | { |
1991 | struct value *val; | |
1992 | struct value_print_options opts; | |
aad95b57 | 1993 | |
63e43d3a PMR |
1994 | /* READ_VAR_VALUE needs a block in order to deal with non-local |
1995 | references (i.e. to handle nested functions). In this context, we | |
1996 | print variables that are local to this frame, so we can avoid passing | |
1997 | a block to it. */ | |
1998 | val = read_var_value (var, NULL, frame); | |
0f6a939d | 1999 | get_user_print_options (&opts); |
3343315b | 2000 | opts.deref_ref = 1; |
0f6a939d | 2001 | common_val_print (val, stream, indent, &opts, current_language); |
8f043999 JK |
2002 | |
2003 | /* common_val_print invalidates FRAME when a pretty printer calls inferior | |
2004 | function. */ | |
2005 | frame = NULL; | |
0f6a939d | 2006 | } |
492d29ea PA |
2007 | CATCH (except, RETURN_MASK_ERROR) |
2008 | { | |
2009 | fprintf_filtered(stream, "<error reading variable %s (%s)>", name, | |
2010 | except.message); | |
2011 | } | |
2012 | END_CATCH | |
2013 | ||
aad95b57 | 2014 | fprintf_filtered (stream, "\n"); |
c906108c SS |
2015 | } |
2016 | ||
c2792f5a DE |
2017 | /* Subroutine of ui_printf to simplify it. |
2018 | Print VALUE to STREAM using FORMAT. | |
e12f57ab | 2019 | VALUE is a C-style string on the target. */ |
c2792f5a DE |
2020 | |
2021 | static void | |
2022 | printf_c_string (struct ui_file *stream, const char *format, | |
2023 | struct value *value) | |
2024 | { | |
2025 | gdb_byte *str; | |
2026 | CORE_ADDR tem; | |
2027 | int j; | |
2028 | ||
2029 | tem = value_as_address (value); | |
2030 | ||
2031 | /* This is a %s argument. Find the length of the string. */ | |
2032 | for (j = 0;; j++) | |
2033 | { | |
2034 | gdb_byte c; | |
2035 | ||
2036 | QUIT; | |
2037 | read_memory (tem + j, &c, 1); | |
2038 | if (c == 0) | |
2039 | break; | |
2040 | } | |
2041 | ||
2042 | /* Copy the string contents into a string inside GDB. */ | |
2043 | str = (gdb_byte *) alloca (j + 1); | |
2044 | if (j != 0) | |
2045 | read_memory (tem, str, j); | |
2046 | str[j] = 0; | |
2047 | ||
2048 | fprintf_filtered (stream, format, (char *) str); | |
2049 | } | |
2050 | ||
2051 | /* Subroutine of ui_printf to simplify it. | |
2052 | Print VALUE to STREAM using FORMAT. | |
e12f57ab | 2053 | VALUE is a wide C-style string on the target. */ |
c2792f5a DE |
2054 | |
2055 | static void | |
2056 | printf_wide_c_string (struct ui_file *stream, const char *format, | |
2057 | struct value *value) | |
2058 | { | |
2059 | gdb_byte *str; | |
2060 | CORE_ADDR tem; | |
2061 | int j; | |
2062 | struct gdbarch *gdbarch = get_type_arch (value_type (value)); | |
2063 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
2064 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
2065 | "wchar_t", NULL, 0); | |
2066 | int wcwidth = TYPE_LENGTH (wctype); | |
2067 | gdb_byte *buf = alloca (wcwidth); | |
2068 | struct obstack output; | |
2069 | struct cleanup *inner_cleanup; | |
2070 | ||
2071 | tem = value_as_address (value); | |
2072 | ||
2073 | /* This is a %s argument. Find the length of the string. */ | |
2074 | for (j = 0;; j += wcwidth) | |
2075 | { | |
2076 | QUIT; | |
2077 | read_memory (tem + j, buf, wcwidth); | |
2078 | if (extract_unsigned_integer (buf, wcwidth, byte_order) == 0) | |
2079 | break; | |
2080 | } | |
2081 | ||
2082 | /* Copy the string contents into a string inside GDB. */ | |
2083 | str = (gdb_byte *) alloca (j + wcwidth); | |
2084 | if (j != 0) | |
2085 | read_memory (tem, str, j); | |
2086 | memset (&str[j], 0, wcwidth); | |
2087 | ||
2088 | obstack_init (&output); | |
2089 | inner_cleanup = make_cleanup_obstack_free (&output); | |
2090 | ||
2091 | convert_between_encodings (target_wide_charset (gdbarch), | |
2092 | host_charset (), | |
2093 | str, j, wcwidth, | |
2094 | &output, translit_char); | |
2095 | obstack_grow_str0 (&output, ""); | |
2096 | ||
2097 | fprintf_filtered (stream, format, obstack_base (&output)); | |
2098 | do_cleanups (inner_cleanup); | |
2099 | } | |
2100 | ||
2101 | /* Subroutine of ui_printf to simplify it. | |
2102 | Print VALUE, a decimal floating point value, to STREAM using FORMAT. */ | |
2103 | ||
2104 | static void | |
2105 | printf_decfloat (struct ui_file *stream, const char *format, | |
2106 | struct value *value) | |
2107 | { | |
2108 | const gdb_byte *param_ptr = value_contents (value); | |
2109 | ||
2110 | #if defined (PRINTF_HAS_DECFLOAT) | |
2111 | /* If we have native support for Decimal floating | |
2112 | printing, handle it here. */ | |
2113 | fprintf_filtered (stream, format, param_ptr); | |
2114 | #else | |
2115 | /* As a workaround until vasprintf has native support for DFP | |
2116 | we convert the DFP values to string and print them using | |
2117 | the %s format specifier. */ | |
2118 | const char *p; | |
2119 | ||
2120 | /* Parameter data. */ | |
2121 | struct type *param_type = value_type (value); | |
2122 | struct gdbarch *gdbarch = get_type_arch (param_type); | |
2123 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
2124 | ||
2125 | /* DFP output data. */ | |
2126 | struct value *dfp_value = NULL; | |
2127 | gdb_byte *dfp_ptr; | |
2128 | int dfp_len = 16; | |
2129 | gdb_byte dec[16]; | |
2130 | struct type *dfp_type = NULL; | |
2131 | char decstr[MAX_DECIMAL_STRING]; | |
2132 | ||
2133 | /* Points to the end of the string so that we can go back | |
2134 | and check for DFP length modifiers. */ | |
2135 | p = format + strlen (format); | |
2136 | ||
2137 | /* Look for the float/double format specifier. */ | |
2138 | while (*p != 'f' && *p != 'e' && *p != 'E' | |
2139 | && *p != 'g' && *p != 'G') | |
2140 | p--; | |
2141 | ||
2142 | /* Search for the '%' char and extract the size and type of | |
2143 | the output decimal value based on its modifiers | |
2144 | (%Hf, %Df, %DDf). */ | |
2145 | while (*--p != '%') | |
2146 | { | |
2147 | if (*p == 'H') | |
2148 | { | |
2149 | dfp_len = 4; | |
2150 | dfp_type = builtin_type (gdbarch)->builtin_decfloat; | |
2151 | } | |
2152 | else if (*p == 'D' && *(p - 1) == 'D') | |
2153 | { | |
2154 | dfp_len = 16; | |
2155 | dfp_type = builtin_type (gdbarch)->builtin_declong; | |
2156 | p--; | |
2157 | } | |
2158 | else | |
2159 | { | |
2160 | dfp_len = 8; | |
2161 | dfp_type = builtin_type (gdbarch)->builtin_decdouble; | |
2162 | } | |
2163 | } | |
2164 | ||
2165 | /* Conversion between different DFP types. */ | |
2166 | if (TYPE_CODE (param_type) == TYPE_CODE_DECFLOAT) | |
2167 | decimal_convert (param_ptr, TYPE_LENGTH (param_type), | |
2168 | byte_order, dec, dfp_len, byte_order); | |
2169 | else | |
2170 | /* If this is a non-trivial conversion, just output 0. | |
2171 | A correct converted value can be displayed by explicitly | |
2172 | casting to a DFP type. */ | |
2173 | decimal_from_string (dec, dfp_len, byte_order, "0"); | |
2174 | ||
2175 | dfp_value = value_from_decfloat (dfp_type, dec); | |
2176 | ||
2177 | dfp_ptr = (gdb_byte *) value_contents (dfp_value); | |
2178 | ||
2179 | decimal_to_string (dfp_ptr, dfp_len, byte_order, decstr); | |
2180 | ||
2181 | /* Print the DFP value. */ | |
2182 | fprintf_filtered (stream, "%s", decstr); | |
2183 | #endif | |
2184 | } | |
2185 | ||
2186 | /* Subroutine of ui_printf to simplify it. | |
2187 | Print VALUE, a target pointer, to STREAM using FORMAT. */ | |
2188 | ||
2189 | static void | |
2190 | printf_pointer (struct ui_file *stream, const char *format, | |
2191 | struct value *value) | |
2192 | { | |
2193 | /* We avoid the host's %p because pointers are too | |
2194 | likely to be the wrong size. The only interesting | |
2195 | modifier for %p is a width; extract that, and then | |
2196 | handle %p as glibc would: %#x or a literal "(nil)". */ | |
2197 | ||
2198 | const char *p; | |
2199 | char *fmt, *fmt_p; | |
2200 | #ifdef PRINTF_HAS_LONG_LONG | |
2201 | long long val = value_as_long (value); | |
2202 | #else | |
2203 | long val = value_as_long (value); | |
2204 | #endif | |
2205 | ||
2206 | fmt = alloca (strlen (format) + 5); | |
2207 | ||
2208 | /* Copy up to the leading %. */ | |
2209 | p = format; | |
2210 | fmt_p = fmt; | |
2211 | while (*p) | |
2212 | { | |
2213 | int is_percent = (*p == '%'); | |
2214 | ||
2215 | *fmt_p++ = *p++; | |
2216 | if (is_percent) | |
2217 | { | |
2218 | if (*p == '%') | |
2219 | *fmt_p++ = *p++; | |
2220 | else | |
2221 | break; | |
2222 | } | |
2223 | } | |
2224 | ||
2225 | if (val != 0) | |
2226 | *fmt_p++ = '#'; | |
2227 | ||
2228 | /* Copy any width. */ | |
2229 | while (*p >= '0' && *p < '9') | |
2230 | *fmt_p++ = *p++; | |
2231 | ||
2232 | gdb_assert (*p == 'p' && *(p + 1) == '\0'); | |
2233 | if (val != 0) | |
2234 | { | |
2235 | #ifdef PRINTF_HAS_LONG_LONG | |
2236 | *fmt_p++ = 'l'; | |
2237 | #endif | |
2238 | *fmt_p++ = 'l'; | |
2239 | *fmt_p++ = 'x'; | |
2240 | *fmt_p++ = '\0'; | |
2241 | fprintf_filtered (stream, fmt, val); | |
2242 | } | |
2243 | else | |
2244 | { | |
2245 | *fmt_p++ = 's'; | |
2246 | *fmt_p++ = '\0'; | |
2247 | fprintf_filtered (stream, fmt, "(nil)"); | |
2248 | } | |
2249 | } | |
2250 | ||
a04b0428 JB |
2251 | /* printf "printf format string" ARG to STREAM. */ |
2252 | ||
2253 | static void | |
bbc13ae3 | 2254 | ui_printf (const char *arg, struct ui_file *stream) |
c906108c | 2255 | { |
d3ce09f5 | 2256 | struct format_piece *fpieces; |
bbc13ae3 | 2257 | const char *s = arg; |
3d6d86c6 | 2258 | struct value **val_args; |
c906108c SS |
2259 | int allocated_args = 20; |
2260 | struct cleanup *old_cleanups; | |
2261 | ||
8d749320 | 2262 | val_args = XNEWVEC (struct value *, allocated_args); |
c13c43fd | 2263 | old_cleanups = make_cleanup (free_current_contents, &val_args); |
c906108c SS |
2264 | |
2265 | if (s == 0) | |
e2e0b3e5 | 2266 | error_no_arg (_("format-control string and values to print")); |
c906108c | 2267 | |
bbc13ae3 | 2268 | s = skip_spaces_const (s); |
c906108c | 2269 | |
675dcf4f | 2270 | /* A format string should follow, enveloped in double quotes. */ |
c906108c | 2271 | if (*s++ != '"') |
8a3fe4f8 | 2272 | error (_("Bad format string, missing '\"'.")); |
c906108c | 2273 | |
d3ce09f5 | 2274 | fpieces = parse_format_string (&s); |
c906108c | 2275 | |
d3ce09f5 | 2276 | make_cleanup (free_format_pieces_cleanup, &fpieces); |
c906108c | 2277 | |
d3ce09f5 SS |
2278 | if (*s++ != '"') |
2279 | error (_("Bad format string, non-terminated '\"'.")); | |
2280 | ||
bbc13ae3 | 2281 | s = skip_spaces_const (s); |
c906108c SS |
2282 | |
2283 | if (*s != ',' && *s != 0) | |
8a3fe4f8 | 2284 | error (_("Invalid argument syntax")); |
c906108c | 2285 | |
c5aa993b JM |
2286 | if (*s == ',') |
2287 | s++; | |
bbc13ae3 | 2288 | s = skip_spaces_const (s); |
c906108c | 2289 | |
c906108c | 2290 | { |
d3ce09f5 | 2291 | int nargs = 0; |
c906108c | 2292 | int nargs_wanted; |
d3ce09f5 SS |
2293 | int i, fr; |
2294 | char *current_substring; | |
c906108c | 2295 | |
c906108c | 2296 | nargs_wanted = 0; |
d3ce09f5 SS |
2297 | for (fr = 0; fpieces[fr].string != NULL; fr++) |
2298 | if (fpieces[fr].argclass != literal_piece) | |
2299 | ++nargs_wanted; | |
c906108c SS |
2300 | |
2301 | /* Now, parse all arguments and evaluate them. | |
2302 | Store the VALUEs in VAL_ARGS. */ | |
2303 | ||
2304 | while (*s != '\0') | |
2305 | { | |
bbc13ae3 | 2306 | const char *s1; |
ad3bbd48 | 2307 | |
c906108c | 2308 | if (nargs == allocated_args) |
f976f6d4 AC |
2309 | val_args = (struct value **) xrealloc ((char *) val_args, |
2310 | (allocated_args *= 2) | |
2311 | * sizeof (struct value *)); | |
a04b0428 JB |
2312 | s1 = s; |
2313 | val_args[nargs] = parse_to_comma_and_eval (&s1); | |
c5aa993b | 2314 | |
c906108c SS |
2315 | nargs++; |
2316 | s = s1; | |
2317 | if (*s == ',') | |
2318 | s++; | |
2319 | } | |
c5aa993b | 2320 | |
c906108c | 2321 | if (nargs != nargs_wanted) |
8a3fe4f8 | 2322 | error (_("Wrong number of arguments for specified format-string")); |
c906108c SS |
2323 | |
2324 | /* Now actually print them. */ | |
d3ce09f5 SS |
2325 | i = 0; |
2326 | for (fr = 0; fpieces[fr].string != NULL; fr++) | |
c906108c | 2327 | { |
d3ce09f5 SS |
2328 | current_substring = fpieces[fr].string; |
2329 | switch (fpieces[fr].argclass) | |
c906108c SS |
2330 | { |
2331 | case string_arg: | |
c2792f5a | 2332 | printf_c_string (stream, current_substring, val_args[i]); |
c906108c | 2333 | break; |
6c7a06a3 | 2334 | case wide_string_arg: |
c2792f5a | 2335 | printf_wide_c_string (stream, current_substring, val_args[i]); |
6c7a06a3 TT |
2336 | break; |
2337 | case wide_char_arg: | |
2338 | { | |
50810684 UW |
2339 | struct gdbarch *gdbarch |
2340 | = get_type_arch (value_type (val_args[i])); | |
2341 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
e6c014f2 | 2342 | "wchar_t", NULL, 0); |
6c7a06a3 TT |
2343 | struct type *valtype; |
2344 | struct obstack output; | |
2345 | struct cleanup *inner_cleanup; | |
2346 | const gdb_byte *bytes; | |
2347 | ||
2348 | valtype = value_type (val_args[i]); | |
2349 | if (TYPE_LENGTH (valtype) != TYPE_LENGTH (wctype) | |
2350 | || TYPE_CODE (valtype) != TYPE_CODE_INT) | |
2351 | error (_("expected wchar_t argument for %%lc")); | |
2352 | ||
2353 | bytes = value_contents (val_args[i]); | |
2354 | ||
2355 | obstack_init (&output); | |
2356 | inner_cleanup = make_cleanup_obstack_free (&output); | |
2357 | ||
f870a310 | 2358 | convert_between_encodings (target_wide_charset (gdbarch), |
6c7a06a3 TT |
2359 | host_charset (), |
2360 | bytes, TYPE_LENGTH (valtype), | |
2361 | TYPE_LENGTH (valtype), | |
2362 | &output, translit_char); | |
2363 | obstack_grow_str0 (&output, ""); | |
2364 | ||
f1421989 HZ |
2365 | fprintf_filtered (stream, current_substring, |
2366 | obstack_base (&output)); | |
6c7a06a3 TT |
2367 | do_cleanups (inner_cleanup); |
2368 | } | |
2369 | break; | |
c906108c SS |
2370 | case double_arg: |
2371 | { | |
b806fb9a UW |
2372 | struct type *type = value_type (val_args[i]); |
2373 | DOUBLEST val; | |
2374 | int inv; | |
2375 | ||
2376 | /* If format string wants a float, unchecked-convert the value | |
2377 | to floating point of the same size. */ | |
50810684 | 2378 | type = float_type_from_length (type); |
b806fb9a UW |
2379 | val = unpack_double (type, value_contents (val_args[i]), &inv); |
2380 | if (inv) | |
2381 | error (_("Invalid floating value found in program.")); | |
2382 | ||
f1421989 | 2383 | fprintf_filtered (stream, current_substring, (double) val); |
c906108c SS |
2384 | break; |
2385 | } | |
46e9880c DJ |
2386 | case long_double_arg: |
2387 | #ifdef HAVE_LONG_DOUBLE | |
2388 | { | |
b806fb9a UW |
2389 | struct type *type = value_type (val_args[i]); |
2390 | DOUBLEST val; | |
2391 | int inv; | |
2392 | ||
2393 | /* If format string wants a float, unchecked-convert the value | |
2394 | to floating point of the same size. */ | |
50810684 | 2395 | type = float_type_from_length (type); |
b806fb9a UW |
2396 | val = unpack_double (type, value_contents (val_args[i]), &inv); |
2397 | if (inv) | |
2398 | error (_("Invalid floating value found in program.")); | |
2399 | ||
f1421989 HZ |
2400 | fprintf_filtered (stream, current_substring, |
2401 | (long double) val); | |
46e9880c DJ |
2402 | break; |
2403 | } | |
2404 | #else | |
2405 | error (_("long double not supported in printf")); | |
2406 | #endif | |
c906108c | 2407 | case long_long_arg: |
74a0d9f6 | 2408 | #ifdef PRINTF_HAS_LONG_LONG |
c906108c SS |
2409 | { |
2410 | long long val = value_as_long (val_args[i]); | |
ad3bbd48 | 2411 | |
f1421989 | 2412 | fprintf_filtered (stream, current_substring, val); |
c906108c SS |
2413 | break; |
2414 | } | |
2415 | #else | |
8a3fe4f8 | 2416 | error (_("long long not supported in printf")); |
c906108c SS |
2417 | #endif |
2418 | case int_arg: | |
2419 | { | |
46e9880c | 2420 | int val = value_as_long (val_args[i]); |
ad3bbd48 | 2421 | |
f1421989 | 2422 | fprintf_filtered (stream, current_substring, val); |
46e9880c DJ |
2423 | break; |
2424 | } | |
2425 | case long_arg: | |
2426 | { | |
c906108c | 2427 | long val = value_as_long (val_args[i]); |
ad3bbd48 | 2428 | |
f1421989 | 2429 | fprintf_filtered (stream, current_substring, val); |
c906108c SS |
2430 | break; |
2431 | } | |
0aea4bf3 | 2432 | /* Handles decimal floating values. */ |
c2792f5a DE |
2433 | case decfloat_arg: |
2434 | printf_decfloat (stream, current_substring, val_args[i]); | |
2435 | break; | |
2025a643 | 2436 | case ptr_arg: |
c2792f5a DE |
2437 | printf_pointer (stream, current_substring, val_args[i]); |
2438 | break; | |
d3ce09f5 SS |
2439 | case literal_piece: |
2440 | /* Print a portion of the format string that has no | |
2441 | directives. Note that this will not include any | |
2442 | ordinary %-specs, but it might include "%%". That is | |
2443 | why we use printf_filtered and not puts_filtered here. | |
2444 | Also, we pass a dummy argument because some platforms | |
2445 | have modified GCC to include -Wformat-security by | |
2446 | default, which will warn here if there is no | |
2447 | argument. */ | |
2448 | fprintf_filtered (stream, current_substring, 0); | |
2449 | break; | |
675dcf4f MK |
2450 | default: |
2451 | internal_error (__FILE__, __LINE__, | |
2025a643 | 2452 | _("failed internal consistency check")); |
c906108c | 2453 | } |
d3ce09f5 SS |
2454 | /* Maybe advance to the next argument. */ |
2455 | if (fpieces[fr].argclass != literal_piece) | |
2456 | ++i; | |
c906108c | 2457 | } |
c906108c SS |
2458 | } |
2459 | do_cleanups (old_cleanups); | |
2460 | } | |
c906108c | 2461 | |
f1421989 HZ |
2462 | /* Implement the "printf" command. */ |
2463 | ||
a04b0428 | 2464 | static void |
f1421989 HZ |
2465 | printf_command (char *arg, int from_tty) |
2466 | { | |
a04b0428 | 2467 | ui_printf (arg, gdb_stdout); |
50b34a18 | 2468 | gdb_flush (gdb_stdout); |
f1421989 HZ |
2469 | } |
2470 | ||
2471 | /* Implement the "eval" command. */ | |
2472 | ||
2473 | static void | |
2474 | eval_command (char *arg, int from_tty) | |
2475 | { | |
2476 | struct ui_file *ui_out = mem_fileopen (); | |
2477 | struct cleanup *cleanups = make_cleanup_ui_file_delete (ui_out); | |
2478 | char *expanded; | |
2479 | ||
a04b0428 | 2480 | ui_printf (arg, ui_out); |
f1421989 HZ |
2481 | |
2482 | expanded = ui_file_xstrdup (ui_out, NULL); | |
2483 | make_cleanup (xfree, expanded); | |
2484 | ||
2485 | execute_command (expanded, from_tty); | |
2486 | ||
2487 | do_cleanups (cleanups); | |
2488 | } | |
2489 | ||
c906108c | 2490 | void |
fba45db2 | 2491 | _initialize_printcmd (void) |
c906108c | 2492 | { |
c94fdfd0 EZ |
2493 | struct cmd_list_element *c; |
2494 | ||
c906108c SS |
2495 | current_display_number = -1; |
2496 | ||
63644780 | 2497 | observer_attach_free_objfile (clear_dangling_display_expressions); |
a3247a22 | 2498 | |
c906108c | 2499 | add_info ("address", address_info, |
1bedd215 | 2500 | _("Describe where symbol SYM is stored.")); |
c906108c | 2501 | |
1bedd215 AC |
2502 | add_info ("symbol", sym_info, _("\ |
2503 | Describe what symbol is at location ADDR.\n\ | |
2504 | Only for symbols with fixed locations (global or static scope).")); | |
c906108c | 2505 | |
1bedd215 AC |
2506 | add_com ("x", class_vars, x_command, _("\ |
2507 | Examine memory: x/FMT ADDRESS.\n\ | |
c906108c SS |
2508 | ADDRESS is an expression for the memory address to examine.\n\ |
2509 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2510 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
6fbe845e AB |
2511 | t(binary), f(float), a(address), i(instruction), c(char), s(string)\n\ |
2512 | and z(hex, zero padded on the left).\n\ | |
1bedd215 | 2513 | Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ |
c906108c SS |
2514 | The specified number of objects of the specified size are printed\n\ |
2515 | according to the format.\n\n\ | |
2516 | Defaults for format and size letters are those previously used.\n\ | |
2517 | Default count is 1. Default address is following last thing printed\n\ | |
1bedd215 | 2518 | with this command or \"print\".")); |
c906108c | 2519 | |
c906108c SS |
2520 | #if 0 |
2521 | add_com ("whereis", class_vars, whereis_command, | |
1bedd215 | 2522 | _("Print line number and file of definition of variable.")); |
c906108c | 2523 | #endif |
c5aa993b | 2524 | |
1bedd215 AC |
2525 | add_info ("display", display_info, _("\ |
2526 | Expressions to display when program stops, with code numbers.")); | |
c906108c | 2527 | |
1a966eab AC |
2528 | add_cmd ("undisplay", class_vars, undisplay_command, _("\ |
2529 | Cancel some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2530 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2531 | No argument means cancel all automatic-display expressions.\n\ | |
2532 | \"delete display\" has the same effect as this command.\n\ | |
1a966eab | 2533 | Do \"info display\" to see current list of code numbers."), |
c5aa993b | 2534 | &cmdlist); |
c906108c | 2535 | |
1bedd215 AC |
2536 | add_com ("display", class_vars, display_command, _("\ |
2537 | Print value of expression EXP each time the program stops.\n\ | |
c906108c SS |
2538 | /FMT may be used before EXP as in the \"print\" command.\n\ |
2539 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2540 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2541 | and examining is done as in the \"x\" command.\n\n\ | |
2542 | With no argument, display all currently requested auto-display expressions.\n\ | |
1bedd215 | 2543 | Use \"undisplay\" to cancel display requests previously made.")); |
c906108c | 2544 | |
c9174737 | 2545 | add_cmd ("display", class_vars, enable_display_command, _("\ |
1a966eab | 2546 | Enable some expressions to be displayed when program stops.\n\ |
c906108c SS |
2547 | Arguments are the code numbers of the expressions to resume displaying.\n\ |
2548 | No argument means enable all automatic-display expressions.\n\ | |
1a966eab | 2549 | Do \"info display\" to see current list of code numbers."), &enablelist); |
c906108c | 2550 | |
1a966eab AC |
2551 | add_cmd ("display", class_vars, disable_display_command, _("\ |
2552 | Disable some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2553 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2554 | No argument means disable all automatic-display expressions.\n\ | |
1a966eab | 2555 | Do \"info display\" to see current list of code numbers."), &disablelist); |
c906108c | 2556 | |
1a966eab AC |
2557 | add_cmd ("display", class_vars, undisplay_command, _("\ |
2558 | Cancel some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2559 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2560 | No argument means cancel all automatic-display expressions.\n\ | |
1a966eab | 2561 | Do \"info display\" to see current list of code numbers."), &deletelist); |
c906108c | 2562 | |
1bedd215 AC |
2563 | add_com ("printf", class_vars, printf_command, _("\ |
2564 | printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
2565 | This is useful for formatted output in user-defined commands.")); | |
c906108c | 2566 | |
1bedd215 AC |
2567 | add_com ("output", class_vars, output_command, _("\ |
2568 | Like \"print\" but don't put in value history and don't print newline.\n\ | |
2569 | This is useful in user-defined commands.")); | |
c906108c | 2570 | |
1bedd215 AC |
2571 | add_prefix_cmd ("set", class_vars, set_command, _("\ |
2572 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2573 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2574 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2575 | with $), a register (a few standard names starting with $), or an actual\n\ | |
1bedd215 AC |
2576 | variable in the program being debugged. EXP is any valid expression.\n\ |
2577 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
2578 | \n\ | |
2579 | With a subcommand, this command modifies parts of the gdb environment.\n\ | |
2580 | You can see these environment settings with the \"show\" command."), | |
c5aa993b | 2581 | &setlist, "set ", 1, &cmdlist); |
c906108c | 2582 | if (dbx_commands) |
1bedd215 AC |
2583 | add_com ("assign", class_vars, set_command, _("\ |
2584 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2585 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2586 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2587 | with $), a register (a few standard names starting with $), or an actual\n\ | |
1bedd215 AC |
2588 | variable in the program being debugged. EXP is any valid expression.\n\ |
2589 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
c906108c | 2590 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
1bedd215 | 2591 | You can see these environment settings with the \"show\" command.")); |
c906108c | 2592 | |
0df8b418 | 2593 | /* "call" is the same as "set", but handy for dbx users to call fns. */ |
1bedd215 AC |
2594 | c = add_com ("call", class_vars, call_command, _("\ |
2595 | Call a function in the program.\n\ | |
c906108c SS |
2596 | The argument is the function name and arguments, in the notation of the\n\ |
2597 | current working language. The result is printed and saved in the value\n\ | |
1bedd215 | 2598 | history, if it is not void.")); |
65d12d83 | 2599 | set_cmd_completer (c, expression_completer); |
c906108c | 2600 | |
1a966eab AC |
2601 | add_cmd ("variable", class_vars, set_command, _("\ |
2602 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2603 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2604 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2605 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2606 | variable in the program being debugged. EXP is any valid expression.\n\ | |
1a966eab | 2607 | This may usually be abbreviated to simply \"set\"."), |
c5aa993b | 2608 | &setlist); |
c906108c | 2609 | |
1bedd215 AC |
2610 | c = add_com ("print", class_vars, print_command, _("\ |
2611 | Print value of expression EXP.\n\ | |
c906108c SS |
2612 | Variables accessible are those of the lexical environment of the selected\n\ |
2613 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2614 | \n\ | |
2615 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2616 | $$NUM refers to NUM'th value back from the last one.\n\ | |
1bedd215 AC |
2617 | Names starting with $ refer to registers (with the values they would have\n\ |
2618 | if the program were to return to the stack frame now selected, restoring\n\ | |
c906108c SS |
2619 | all registers saved by frames farther in) or else to debugger\n\ |
2620 | \"convenience\" variables (any such name not a known register).\n\ | |
1bedd215 AC |
2621 | Use assignment expressions to give values to convenience variables.\n\ |
2622 | \n\ | |
c906108c SS |
2623 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ |
2624 | @ is a binary operator for treating consecutive data objects\n\ | |
2625 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2626 | element is FOO, whose second element is stored in the space following\n\ | |
2627 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
1bedd215 AC |
2628 | resides in memory.\n\ |
2629 | \n\ | |
c906108c | 2630 | EXP may be preceded with /FMT, where FMT is a format letter\n\ |
1bedd215 | 2631 | but no count or size letter (see \"x\" command).")); |
65d12d83 | 2632 | set_cmd_completer (c, expression_completer); |
c906108c | 2633 | add_com_alias ("p", "print", class_vars, 1); |
e93a8774 | 2634 | add_com_alias ("inspect", "print", class_vars, 1); |
c906108c | 2635 | |
35096d9d AC |
2636 | add_setshow_uinteger_cmd ("max-symbolic-offset", no_class, |
2637 | &max_symbolic_offset, _("\ | |
2638 | Set the largest offset that will be printed in <symbol+1234> form."), _("\ | |
f81d1120 PA |
2639 | Show the largest offset that will be printed in <symbol+1234> form."), _("\ |
2640 | Tell GDB to only display the symbolic form of an address if the\n\ | |
2641 | offset between the closest earlier symbol and the address is less than\n\ | |
2642 | the specified maximum offset. The default is \"unlimited\", which tells GDB\n\ | |
2643 | to always print the symbolic form of an address if any symbol precedes\n\ | |
2644 | it. Zero is equivalent to \"unlimited\"."), | |
35096d9d | 2645 | NULL, |
920d2a44 | 2646 | show_max_symbolic_offset, |
35096d9d | 2647 | &setprintlist, &showprintlist); |
5bf193a2 AC |
2648 | add_setshow_boolean_cmd ("symbol-filename", no_class, |
2649 | &print_symbol_filename, _("\ | |
2650 | Set printing of source filename and line number with <symbol>."), _("\ | |
2651 | Show printing of source filename and line number with <symbol>."), NULL, | |
2652 | NULL, | |
920d2a44 | 2653 | show_print_symbol_filename, |
5bf193a2 | 2654 | &setprintlist, &showprintlist); |
f1421989 HZ |
2655 | |
2656 | add_com ("eval", no_class, eval_command, _("\ | |
2657 | Convert \"printf format string\", arg1, arg2, arg3, ..., argn to\n\ | |
2658 | a command line, and call it.")); | |
c906108c | 2659 | } |