Commit | Line | Data |
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c906108c | 1 | /* Print values for GNU debugger GDB. |
e2ad119d | 2 | |
28e7fd62 | 3 | Copyright (C) 1986-2013 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
21 | #include "gdb_string.h" | |
22 | #include "frame.h" | |
23 | #include "symtab.h" | |
24 | #include "gdbtypes.h" | |
25 | #include "value.h" | |
26 | #include "language.h" | |
27 | #include "expression.h" | |
28 | #include "gdbcore.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "target.h" | |
31 | #include "breakpoint.h" | |
32 | #include "demangle.h" | |
50f182aa | 33 | #include "gdb-demangle.h" |
c906108c SS |
34 | #include "valprint.h" |
35 | #include "annotate.h" | |
c5aa993b JM |
36 | #include "symfile.h" /* for overlay functions */ |
37 | #include "objfiles.h" /* ditto */ | |
c94fdfd0 | 38 | #include "completer.h" /* for completion functions */ |
8b93c638 | 39 | #include "ui-out.h" |
261397f8 | 40 | #include "gdb_assert.h" |
fe898f56 | 41 | #include "block.h" |
92bf2b80 | 42 | #include "disasm.h" |
1a619819 | 43 | #include "dfp.h" |
79a45b7d | 44 | #include "valprint.h" |
a3247a22 PP |
45 | #include "exceptions.h" |
46 | #include "observer.h" | |
47 | #include "solist.h" | |
a3247a22 | 48 | #include "parser-defs.h" |
6c7a06a3 | 49 | #include "charset.h" |
704e9165 | 50 | #include "arch-utils.h" |
e9cafbcc | 51 | #include "cli/cli-utils.h" |
d3ce09f5 | 52 | #include "format.h" |
05cba821 | 53 | #include "source.h" |
c906108c | 54 | |
6a83354a | 55 | #ifdef TUI |
0df8b418 | 56 | #include "tui/tui.h" /* For tui_active et al. */ |
6a83354a AC |
57 | #endif |
58 | ||
c906108c | 59 | struct format_data |
c5aa993b JM |
60 | { |
61 | int count; | |
62 | char format; | |
63 | char size; | |
a6bac58e TT |
64 | |
65 | /* True if the value should be printed raw -- that is, bypassing | |
66 | python-based formatters. */ | |
67 | unsigned char raw; | |
c5aa993b | 68 | }; |
c906108c SS |
69 | |
70 | /* Last specified output format. */ | |
71 | ||
a6bac58e | 72 | static char last_format = 0; |
c906108c SS |
73 | |
74 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
75 | ||
76 | static char last_size = 'w'; | |
77 | ||
5d3729b5 | 78 | /* Default address to examine next, and associated architecture. */ |
c906108c | 79 | |
5d3729b5 | 80 | static struct gdbarch *next_gdbarch; |
c906108c SS |
81 | static CORE_ADDR next_address; |
82 | ||
a4642986 MR |
83 | /* Number of delay instructions following current disassembled insn. */ |
84 | ||
85 | static int branch_delay_insns; | |
86 | ||
c906108c SS |
87 | /* Last address examined. */ |
88 | ||
89 | static CORE_ADDR last_examine_address; | |
90 | ||
91 | /* Contents of last address examined. | |
92 | This is not valid past the end of the `x' command! */ | |
93 | ||
3d6d86c6 | 94 | static struct value *last_examine_value; |
c906108c SS |
95 | |
96 | /* Largest offset between a symbolic value and an address, that will be | |
97 | printed as `0x1234 <symbol+offset>'. */ | |
98 | ||
99 | static unsigned int max_symbolic_offset = UINT_MAX; | |
920d2a44 AC |
100 | static void |
101 | show_max_symbolic_offset (struct ui_file *file, int from_tty, | |
102 | struct cmd_list_element *c, const char *value) | |
103 | { | |
3e43a32a MS |
104 | fprintf_filtered (file, |
105 | _("The largest offset that will be " | |
106 | "printed in <symbol+1234> form is %s.\n"), | |
920d2a44 AC |
107 | value); |
108 | } | |
c906108c SS |
109 | |
110 | /* Append the source filename and linenumber of the symbol when | |
111 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
112 | static int print_symbol_filename = 0; | |
920d2a44 AC |
113 | static void |
114 | show_print_symbol_filename (struct ui_file *file, int from_tty, | |
115 | struct cmd_list_element *c, const char *value) | |
116 | { | |
3e43a32a MS |
117 | fprintf_filtered (file, _("Printing of source filename and " |
118 | "line number with <symbol> is %s.\n"), | |
920d2a44 AC |
119 | value); |
120 | } | |
c906108c SS |
121 | |
122 | /* Number of auto-display expression currently being displayed. | |
9d8fa392 | 123 | So that we can disable it if we get a signal within it. |
c906108c SS |
124 | -1 when not doing one. */ |
125 | ||
5a18e302 | 126 | static int current_display_number; |
c906108c | 127 | |
c906108c | 128 | struct display |
c5aa993b JM |
129 | { |
130 | /* Chain link to next auto-display item. */ | |
131 | struct display *next; | |
6c95b8df | 132 | |
fa8a61dc TT |
133 | /* The expression as the user typed it. */ |
134 | char *exp_string; | |
6c95b8df | 135 | |
c5aa993b JM |
136 | /* Expression to be evaluated and displayed. */ |
137 | struct expression *exp; | |
6c95b8df | 138 | |
c5aa993b JM |
139 | /* Item number of this auto-display item. */ |
140 | int number; | |
6c95b8df | 141 | |
c5aa993b JM |
142 | /* Display format specified. */ |
143 | struct format_data format; | |
6c95b8df PA |
144 | |
145 | /* Program space associated with `block'. */ | |
146 | struct program_space *pspace; | |
147 | ||
0df8b418 | 148 | /* Innermost block required by this expression when evaluated. */ |
270140bd | 149 | const struct block *block; |
6c95b8df | 150 | |
0df8b418 | 151 | /* Status of this display (enabled or disabled). */ |
b5de0fa7 | 152 | int enabled_p; |
c5aa993b | 153 | }; |
c906108c SS |
154 | |
155 | /* Chain of expressions whose values should be displayed | |
156 | automatically each time the program stops. */ | |
157 | ||
158 | static struct display *display_chain; | |
159 | ||
160 | static int display_number; | |
161 | ||
c9174737 PA |
162 | /* Walk the following statement or block through all displays. |
163 | ALL_DISPLAYS_SAFE does so even if the statement deletes the current | |
164 | display. */ | |
3c3fe74c PA |
165 | |
166 | #define ALL_DISPLAYS(B) \ | |
167 | for (B = display_chain; B; B = B->next) | |
168 | ||
c9174737 PA |
169 | #define ALL_DISPLAYS_SAFE(B,TMP) \ |
170 | for (B = display_chain; \ | |
171 | B ? (TMP = B->next, 1): 0; \ | |
172 | B = TMP) | |
173 | ||
0df8b418 | 174 | /* Prototypes for exported functions. */ |
c906108c | 175 | |
a14ed312 | 176 | void _initialize_printcmd (void); |
c906108c | 177 | |
0df8b418 | 178 | /* Prototypes for local functions. */ |
c906108c | 179 | |
a14ed312 | 180 | static void do_one_display (struct display *); |
c906108c | 181 | \f |
c5aa993b | 182 | |
c906108c SS |
183 | /* Decode a format specification. *STRING_PTR should point to it. |
184 | OFORMAT and OSIZE are used as defaults for the format and size | |
185 | if none are given in the format specification. | |
186 | If OSIZE is zero, then the size field of the returned value | |
187 | should be set only if a size is explicitly specified by the | |
188 | user. | |
189 | The structure returned describes all the data | |
190 | found in the specification. In addition, *STRING_PTR is advanced | |
191 | past the specification and past all whitespace following it. */ | |
192 | ||
193 | static struct format_data | |
6f937416 | 194 | decode_format (const char **string_ptr, int oformat, int osize) |
c906108c SS |
195 | { |
196 | struct format_data val; | |
6f937416 | 197 | const char *p = *string_ptr; |
c906108c SS |
198 | |
199 | val.format = '?'; | |
200 | val.size = '?'; | |
201 | val.count = 1; | |
a6bac58e | 202 | val.raw = 0; |
c906108c SS |
203 | |
204 | if (*p >= '0' && *p <= '9') | |
205 | val.count = atoi (p); | |
c5aa993b JM |
206 | while (*p >= '0' && *p <= '9') |
207 | p++; | |
c906108c SS |
208 | |
209 | /* Now process size or format letters that follow. */ | |
210 | ||
211 | while (1) | |
212 | { | |
213 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
214 | val.size = *p++; | |
a6bac58e TT |
215 | else if (*p == 'r') |
216 | { | |
217 | val.raw = 1; | |
218 | p++; | |
219 | } | |
c906108c SS |
220 | else if (*p >= 'a' && *p <= 'z') |
221 | val.format = *p++; | |
222 | else | |
223 | break; | |
224 | } | |
225 | ||
c5aa993b JM |
226 | while (*p == ' ' || *p == '\t') |
227 | p++; | |
c906108c SS |
228 | *string_ptr = p; |
229 | ||
230 | /* Set defaults for format and size if not specified. */ | |
231 | if (val.format == '?') | |
232 | { | |
233 | if (val.size == '?') | |
234 | { | |
235 | /* Neither has been specified. */ | |
236 | val.format = oformat; | |
237 | val.size = osize; | |
238 | } | |
239 | else | |
240 | /* If a size is specified, any format makes a reasonable | |
241 | default except 'i'. */ | |
242 | val.format = oformat == 'i' ? 'x' : oformat; | |
243 | } | |
244 | else if (val.size == '?') | |
245 | switch (val.format) | |
246 | { | |
247 | case 'a': | |
5d3729b5 UW |
248 | /* Pick the appropriate size for an address. This is deferred |
249 | until do_examine when we know the actual architecture to use. | |
250 | A special size value of 'a' is used to indicate this case. */ | |
251 | val.size = osize ? 'a' : osize; | |
c906108c SS |
252 | break; |
253 | case 'f': | |
254 | /* Floating point has to be word or giantword. */ | |
255 | if (osize == 'w' || osize == 'g') | |
256 | val.size = osize; | |
257 | else | |
258 | /* Default it to giantword if the last used size is not | |
259 | appropriate. */ | |
260 | val.size = osize ? 'g' : osize; | |
261 | break; | |
262 | case 'c': | |
263 | /* Characters default to one byte. */ | |
264 | val.size = osize ? 'b' : osize; | |
265 | break; | |
9a22f0d0 | 266 | case 's': |
3e43a32a MS |
267 | /* Display strings with byte size chars unless explicitly |
268 | specified. */ | |
9a22f0d0 PM |
269 | val.size = '\0'; |
270 | break; | |
271 | ||
c906108c SS |
272 | default: |
273 | /* The default is the size most recently specified. */ | |
274 | val.size = osize; | |
275 | } | |
276 | ||
277 | return val; | |
278 | } | |
279 | \f | |
79a45b7d | 280 | /* Print value VAL on stream according to OPTIONS. |
c906108c | 281 | Do not end with a newline. |
c906108c | 282 | SIZE is the letter for the size of datum being printed. |
ea37ba09 DJ |
283 | This is used to pad hex numbers so they line up. SIZE is 0 |
284 | for print / output and set for examine. */ | |
c906108c SS |
285 | |
286 | static void | |
79a45b7d TT |
287 | print_formatted (struct value *val, int size, |
288 | const struct value_print_options *options, | |
fba45db2 | 289 | struct ui_file *stream) |
c906108c | 290 | { |
df407dfe | 291 | struct type *type = check_typedef (value_type (val)); |
c906108c SS |
292 | int len = TYPE_LENGTH (type); |
293 | ||
294 | if (VALUE_LVAL (val) == lval_memory) | |
42ae5230 | 295 | next_address = value_address (val) + len; |
c906108c | 296 | |
ea37ba09 | 297 | if (size) |
c906108c | 298 | { |
79a45b7d | 299 | switch (options->format) |
ea37ba09 DJ |
300 | { |
301 | case 's': | |
6c7a06a3 TT |
302 | { |
303 | struct type *elttype = value_type (val); | |
ad3bbd48 | 304 | |
42ae5230 | 305 | next_address = (value_address (val) |
09ca9e2e | 306 | + val_print_string (elttype, NULL, |
42ae5230 | 307 | value_address (val), -1, |
9a22f0d0 | 308 | stream, options) * len); |
6c7a06a3 | 309 | } |
ea37ba09 | 310 | return; |
c906108c | 311 | |
ea37ba09 DJ |
312 | case 'i': |
313 | /* We often wrap here if there are long symbolic names. */ | |
314 | wrap_here (" "); | |
42ae5230 | 315 | next_address = (value_address (val) |
13274fc3 UW |
316 | + gdb_print_insn (get_type_arch (type), |
317 | value_address (val), stream, | |
ea37ba09 DJ |
318 | &branch_delay_insns)); |
319 | return; | |
320 | } | |
c906108c | 321 | } |
ea37ba09 | 322 | |
79a45b7d | 323 | if (options->format == 0 || options->format == 's' |
4e885b20 | 324 | || TYPE_CODE (type) == TYPE_CODE_REF |
ea37ba09 DJ |
325 | || TYPE_CODE (type) == TYPE_CODE_ARRAY |
326 | || TYPE_CODE (type) == TYPE_CODE_STRING | |
327 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
328 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
329 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
79a45b7d | 330 | value_print (val, stream, options); |
ea37ba09 | 331 | else |
b021a221 MS |
332 | /* User specified format, so don't look to the type to tell us |
333 | what to do. */ | |
ab2188aa PA |
334 | val_print_scalar_formatted (type, |
335 | value_contents_for_printing (val), | |
336 | value_embedded_offset (val), | |
337 | val, | |
338 | options, size, stream); | |
c906108c SS |
339 | } |
340 | ||
b806fb9a UW |
341 | /* Return builtin floating point type of same length as TYPE. |
342 | If no such type is found, return TYPE itself. */ | |
343 | static struct type * | |
50810684 | 344 | float_type_from_length (struct type *type) |
b806fb9a | 345 | { |
50810684 | 346 | struct gdbarch *gdbarch = get_type_arch (type); |
b806fb9a | 347 | const struct builtin_type *builtin = builtin_type (gdbarch); |
b806fb9a | 348 | |
744a8059 | 349 | if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_float)) |
b806fb9a | 350 | type = builtin->builtin_float; |
744a8059 | 351 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_double)) |
b806fb9a | 352 | type = builtin->builtin_double; |
744a8059 | 353 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_long_double)) |
b806fb9a UW |
354 | type = builtin->builtin_long_double; |
355 | ||
356 | return type; | |
357 | } | |
358 | ||
c906108c | 359 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, |
ab2188aa PA |
360 | according to OPTIONS and SIZE on STREAM. Formats s and i are not |
361 | supported at this level. */ | |
c906108c SS |
362 | |
363 | void | |
366b1cbf | 364 | print_scalar_formatted (const void *valaddr, struct type *type, |
79a45b7d TT |
365 | const struct value_print_options *options, |
366 | int size, struct ui_file *stream) | |
c906108c | 367 | { |
50810684 | 368 | struct gdbarch *gdbarch = get_type_arch (type); |
81cb7cc9 | 369 | LONGEST val_long = 0; |
c906108c | 370 | unsigned int len = TYPE_LENGTH (type); |
69feb676 | 371 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 372 | |
ab2188aa PA |
373 | /* String printing should go through val_print_scalar_formatted. */ |
374 | gdb_assert (options->format != 's'); | |
ea37ba09 | 375 | |
6b9acc27 JJ |
376 | if (len > sizeof(LONGEST) && |
377 | (TYPE_CODE (type) == TYPE_CODE_INT | |
378 | || TYPE_CODE (type) == TYPE_CODE_ENUM)) | |
379 | { | |
79a45b7d | 380 | switch (options->format) |
6b9acc27 JJ |
381 | { |
382 | case 'o': | |
d44e8473 | 383 | print_octal_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
384 | return; |
385 | case 'u': | |
386 | case 'd': | |
d44e8473 | 387 | print_decimal_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
388 | return; |
389 | case 't': | |
d44e8473 | 390 | print_binary_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
391 | return; |
392 | case 'x': | |
d44e8473 | 393 | print_hex_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
394 | return; |
395 | case 'c': | |
6c7a06a3 | 396 | print_char_chars (stream, type, valaddr, len, byte_order); |
6b9acc27 JJ |
397 | return; |
398 | default: | |
399 | break; | |
400 | }; | |
401 | } | |
402 | ||
79a45b7d | 403 | if (options->format != 'f') |
c906108c SS |
404 | val_long = unpack_long (type, valaddr); |
405 | ||
ef166cf4 | 406 | /* If the value is a pointer, and pointers and addresses are not the |
d0aee0c4 | 407 | same, then at this point, the value's length (in target bytes) is |
17a912b6 | 408 | gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */ |
ef166cf4 | 409 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
69feb676 | 410 | len = gdbarch_addr_bit (gdbarch) / TARGET_CHAR_BIT; |
ef166cf4 | 411 | |
c906108c SS |
412 | /* If we are printing it as unsigned, truncate it in case it is actually |
413 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
414 | (if shorts are 16 bits) instead of 4294967295). */ | |
1fac167a | 415 | if (options->format != 'd' || TYPE_UNSIGNED (type)) |
c906108c SS |
416 | { |
417 | if (len < sizeof (LONGEST)) | |
418 | val_long &= ((LONGEST) 1 << HOST_CHAR_BIT * len) - 1; | |
419 | } | |
420 | ||
79a45b7d | 421 | switch (options->format) |
c906108c SS |
422 | { |
423 | case 'x': | |
424 | if (!size) | |
425 | { | |
675dcf4f | 426 | /* No size specified, like in print. Print varying # of digits. */ |
c906108c SS |
427 | print_longest (stream, 'x', 1, val_long); |
428 | } | |
429 | else | |
430 | switch (size) | |
431 | { | |
432 | case 'b': | |
433 | case 'h': | |
434 | case 'w': | |
435 | case 'g': | |
436 | print_longest (stream, size, 1, val_long); | |
437 | break; | |
438 | default: | |
8a3fe4f8 | 439 | error (_("Undefined output size \"%c\"."), size); |
c906108c SS |
440 | } |
441 | break; | |
442 | ||
443 | case 'd': | |
444 | print_longest (stream, 'd', 1, val_long); | |
445 | break; | |
446 | ||
447 | case 'u': | |
448 | print_longest (stream, 'u', 0, val_long); | |
449 | break; | |
450 | ||
451 | case 'o': | |
452 | if (val_long) | |
453 | print_longest (stream, 'o', 1, val_long); | |
454 | else | |
455 | fprintf_filtered (stream, "0"); | |
456 | break; | |
457 | ||
458 | case 'a': | |
593de6a6 | 459 | { |
593de6a6 | 460 | CORE_ADDR addr = unpack_pointer (type, valaddr); |
ad3bbd48 | 461 | |
5af949e3 | 462 | print_address (gdbarch, addr, stream); |
593de6a6 | 463 | } |
c906108c SS |
464 | break; |
465 | ||
466 | case 'c': | |
79a45b7d TT |
467 | { |
468 | struct value_print_options opts = *options; | |
69feb676 | 469 | |
ad3bbd48 | 470 | opts.format = 0; |
79a45b7d | 471 | if (TYPE_UNSIGNED (type)) |
69feb676 UW |
472 | type = builtin_type (gdbarch)->builtin_true_unsigned_char; |
473 | else | |
474 | type = builtin_type (gdbarch)->builtin_true_char; | |
475 | ||
476 | value_print (value_from_longest (type, val_long), stream, &opts); | |
79a45b7d | 477 | } |
c906108c SS |
478 | break; |
479 | ||
480 | case 'f': | |
50810684 | 481 | type = float_type_from_length (type); |
c906108c SS |
482 | print_floating (valaddr, type, stream); |
483 | break; | |
484 | ||
485 | case 0: | |
675dcf4f MK |
486 | internal_error (__FILE__, __LINE__, |
487 | _("failed internal consistency check")); | |
c906108c SS |
488 | |
489 | case 't': | |
490 | /* Binary; 't' stands for "two". */ | |
491 | { | |
c5aa993b JM |
492 | char bits[8 * (sizeof val_long) + 1]; |
493 | char buf[8 * (sizeof val_long) + 32]; | |
c906108c SS |
494 | char *cp = bits; |
495 | int width; | |
496 | ||
c5aa993b JM |
497 | if (!size) |
498 | width = 8 * (sizeof val_long); | |
499 | else | |
500 | switch (size) | |
c906108c SS |
501 | { |
502 | case 'b': | |
503 | width = 8; | |
504 | break; | |
505 | case 'h': | |
506 | width = 16; | |
507 | break; | |
508 | case 'w': | |
509 | width = 32; | |
510 | break; | |
511 | case 'g': | |
512 | width = 64; | |
513 | break; | |
514 | default: | |
8a3fe4f8 | 515 | error (_("Undefined output size \"%c\"."), size); |
c906108c SS |
516 | } |
517 | ||
c5aa993b JM |
518 | bits[width] = '\0'; |
519 | while (width-- > 0) | |
520 | { | |
521 | bits[width] = (val_long & 1) ? '1' : '0'; | |
522 | val_long >>= 1; | |
523 | } | |
c906108c SS |
524 | if (!size) |
525 | { | |
526 | while (*cp && *cp == '0') | |
527 | cp++; | |
528 | if (*cp == '\0') | |
529 | cp--; | |
530 | } | |
daac021a | 531 | strncpy (buf, cp, sizeof (bits)); |
306d9ac5 | 532 | fputs_filtered (buf, stream); |
c906108c SS |
533 | } |
534 | break; | |
535 | ||
536 | default: | |
79a45b7d | 537 | error (_("Undefined output format \"%c\"."), options->format); |
c906108c SS |
538 | } |
539 | } | |
540 | ||
541 | /* Specify default address for `x' command. | |
675dcf4f | 542 | The `info lines' command uses this. */ |
c906108c SS |
543 | |
544 | void | |
8b9b9e1a | 545 | set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 546 | { |
8b9b9e1a UW |
547 | struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
548 | ||
5d3729b5 | 549 | next_gdbarch = gdbarch; |
c906108c SS |
550 | next_address = addr; |
551 | ||
552 | /* Make address available to the user as $_. */ | |
553 | set_internalvar (lookup_internalvar ("_"), | |
8b9b9e1a | 554 | value_from_pointer (ptr_type, addr)); |
c906108c SS |
555 | } |
556 | ||
557 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
558 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
559 | Optionally also print source file and line number, if available. | |
560 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
561 | or to interpret it as a possible C++ name and convert it back to source | |
562 | form. However note that DO_DEMANGLE can be overridden by the specific | |
9cb709b6 TT |
563 | settings of the demangle and asm_demangle variables. Returns |
564 | non-zero if anything was printed; zero otherwise. */ | |
c906108c | 565 | |
9cb709b6 | 566 | int |
22e722e1 DJ |
567 | print_address_symbolic (struct gdbarch *gdbarch, CORE_ADDR addr, |
568 | struct ui_file *stream, | |
675dcf4f | 569 | int do_demangle, char *leadin) |
dfcd3bfb JM |
570 | { |
571 | char *name = NULL; | |
572 | char *filename = NULL; | |
573 | int unmapped = 0; | |
574 | int offset = 0; | |
575 | int line = 0; | |
576 | ||
675dcf4f | 577 | /* Throw away both name and filename. */ |
2f9429ae AC |
578 | struct cleanup *cleanup_chain = make_cleanup (free_current_contents, &name); |
579 | make_cleanup (free_current_contents, &filename); | |
dfcd3bfb | 580 | |
22e722e1 | 581 | if (build_address_symbolic (gdbarch, addr, do_demangle, &name, &offset, |
675dcf4f | 582 | &filename, &line, &unmapped)) |
2f9429ae AC |
583 | { |
584 | do_cleanups (cleanup_chain); | |
9cb709b6 | 585 | return 0; |
2f9429ae | 586 | } |
dfcd3bfb JM |
587 | |
588 | fputs_filtered (leadin, stream); | |
589 | if (unmapped) | |
590 | fputs_filtered ("<*", stream); | |
591 | else | |
592 | fputs_filtered ("<", stream); | |
593 | fputs_filtered (name, stream); | |
594 | if (offset != 0) | |
595 | fprintf_filtered (stream, "+%u", (unsigned int) offset); | |
596 | ||
597 | /* Append source filename and line number if desired. Give specific | |
598 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
599 | if (print_symbol_filename && filename != NULL) | |
600 | { | |
601 | if (line != -1) | |
602 | fprintf_filtered (stream, " at %s:%d", filename, line); | |
603 | else | |
604 | fprintf_filtered (stream, " in %s", filename); | |
605 | } | |
606 | if (unmapped) | |
607 | fputs_filtered ("*>", stream); | |
608 | else | |
609 | fputs_filtered (">", stream); | |
610 | ||
611 | do_cleanups (cleanup_chain); | |
9cb709b6 | 612 | return 1; |
dfcd3bfb JM |
613 | } |
614 | ||
615 | /* Given an address ADDR return all the elements needed to print the | |
0df8b418 | 616 | address in a symbolic form. NAME can be mangled or not depending |
dfcd3bfb | 617 | on DO_DEMANGLE (and also on the asm_demangle global variable, |
0df8b418 MS |
618 | manipulated via ''set print asm-demangle''). Return 0 in case of |
619 | success, when all the info in the OUT paramters is valid. Return 1 | |
620 | otherwise. */ | |
dfcd3bfb | 621 | int |
22e722e1 DJ |
622 | build_address_symbolic (struct gdbarch *gdbarch, |
623 | CORE_ADDR addr, /* IN */ | |
dfcd3bfb JM |
624 | int do_demangle, /* IN */ |
625 | char **name, /* OUT */ | |
626 | int *offset, /* OUT */ | |
627 | char **filename, /* OUT */ | |
628 | int *line, /* OUT */ | |
629 | int *unmapped) /* OUT */ | |
c906108c SS |
630 | { |
631 | struct minimal_symbol *msymbol; | |
632 | struct symbol *symbol; | |
c906108c | 633 | CORE_ADDR name_location = 0; |
714835d5 | 634 | struct obj_section *section = NULL; |
0d5cff50 | 635 | const char *name_temp = ""; |
dfcd3bfb | 636 | |
89c83b10 | 637 | /* Let's say it is mapped (not unmapped). */ |
dfcd3bfb | 638 | *unmapped = 0; |
c906108c | 639 | |
dfcd3bfb | 640 | /* Determine if the address is in an overlay, and whether it is |
675dcf4f | 641 | mapped. */ |
c906108c SS |
642 | if (overlay_debugging) |
643 | { | |
644 | section = find_pc_overlay (addr); | |
645 | if (pc_in_unmapped_range (addr, section)) | |
646 | { | |
dfcd3bfb | 647 | *unmapped = 1; |
c906108c SS |
648 | addr = overlay_mapped_address (addr, section); |
649 | } | |
650 | } | |
651 | ||
c906108c SS |
652 | /* First try to find the address in the symbol table, then |
653 | in the minsyms. Take the closest one. */ | |
654 | ||
655 | /* This is defective in the sense that it only finds text symbols. So | |
656 | really this is kind of pointless--we should make sure that the | |
657 | minimal symbols have everything we need (by changing that we could | |
658 | save some memory, but for many debug format--ELF/DWARF or | |
659 | anything/stabs--it would be inconvenient to eliminate those minimal | |
660 | symbols anyway). */ | |
7cbd4a93 | 661 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section).minsym; |
c906108c SS |
662 | symbol = find_pc_sect_function (addr, section); |
663 | ||
664 | if (symbol) | |
665 | { | |
22e722e1 DJ |
666 | /* If this is a function (i.e. a code address), strip out any |
667 | non-address bits. For instance, display a pointer to the | |
668 | first instruction of a Thumb function as <function>; the | |
669 | second instruction will be <function+2>, even though the | |
670 | pointer is <function+3>. This matches the ISA behavior. */ | |
671 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
672 | ||
c906108c | 673 | name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol)); |
406fc7fb | 674 | if (do_demangle || asm_demangle) |
de5ad195 | 675 | name_temp = SYMBOL_PRINT_NAME (symbol); |
c906108c | 676 | else |
3567439c | 677 | name_temp = SYMBOL_LINKAGE_NAME (symbol); |
c906108c SS |
678 | } |
679 | ||
9cb709b6 | 680 | if (msymbol != NULL |
d9eaeb59 | 681 | && MSYMBOL_HAS_SIZE (msymbol) |
9cb709b6 TT |
682 | && MSYMBOL_SIZE (msymbol) == 0 |
683 | && MSYMBOL_TYPE (msymbol) != mst_text | |
684 | && MSYMBOL_TYPE (msymbol) != mst_text_gnu_ifunc | |
685 | && MSYMBOL_TYPE (msymbol) != mst_file_text) | |
686 | msymbol = NULL; | |
687 | ||
c906108c SS |
688 | if (msymbol != NULL) |
689 | { | |
690 | if (SYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL) | |
691 | { | |
692 | /* The msymbol is closer to the address than the symbol; | |
693 | use the msymbol instead. */ | |
694 | symbol = 0; | |
c906108c | 695 | name_location = SYMBOL_VALUE_ADDRESS (msymbol); |
406fc7fb | 696 | if (do_demangle || asm_demangle) |
de5ad195 | 697 | name_temp = SYMBOL_PRINT_NAME (msymbol); |
c906108c | 698 | else |
3567439c | 699 | name_temp = SYMBOL_LINKAGE_NAME (msymbol); |
c906108c SS |
700 | } |
701 | } | |
702 | if (symbol == NULL && msymbol == 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 | |
fba45db2 | 919 | validate_format (struct format_data fmt, 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 | ||
675dcf4f | 931 | /* Evaluate string EXP as an expression in the current language and |
c5aa993b | 932 | print the resulting value. EXP may contain a format specifier as the |
675dcf4f | 933 | first argument ("/x myvar" for example, to print myvar in hex). */ |
c906108c SS |
934 | |
935 | static void | |
6f937416 | 936 | print_command_1 (const char *exp, int voidprint) |
c906108c SS |
937 | { |
938 | struct expression *expr; | |
52f0bd74 AC |
939 | struct cleanup *old_chain = 0; |
940 | char format = 0; | |
3d6d86c6 | 941 | struct value *val; |
c906108c SS |
942 | struct format_data fmt; |
943 | int cleanup = 0; | |
944 | ||
c906108c SS |
945 | if (exp && *exp == '/') |
946 | { | |
947 | exp++; | |
948 | fmt = decode_format (&exp, last_format, 0); | |
949 | validate_format (fmt, "print"); | |
950 | last_format = format = fmt.format; | |
951 | } | |
952 | else | |
953 | { | |
954 | fmt.count = 1; | |
955 | fmt.format = 0; | |
956 | fmt.size = 0; | |
a6bac58e | 957 | fmt.raw = 0; |
c906108c SS |
958 | } |
959 | ||
960 | if (exp && *exp) | |
961 | { | |
c906108c | 962 | expr = parse_expression (exp); |
c13c43fd | 963 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
964 | cleanup = 1; |
965 | val = evaluate_expression (expr); | |
c906108c SS |
966 | } |
967 | else | |
968 | val = access_value_history (0); | |
969 | ||
df407dfe AC |
970 | if (voidprint || (val && value_type (val) && |
971 | TYPE_CODE (value_type (val)) != TYPE_CODE_VOID)) | |
c906108c | 972 | { |
79a45b7d | 973 | struct value_print_options opts; |
c906108c SS |
974 | int histindex = record_latest_value (val); |
975 | ||
976 | if (histindex >= 0) | |
df407dfe | 977 | annotate_value_history_begin (histindex, value_type (val)); |
c906108c | 978 | else |
df407dfe | 979 | annotate_value_begin (value_type (val)); |
c906108c | 980 | |
e93a8774 | 981 | if (histindex >= 0) |
c5aa993b | 982 | printf_filtered ("$%d = ", histindex); |
c906108c SS |
983 | |
984 | if (histindex >= 0) | |
985 | annotate_value_history_value (); | |
986 | ||
79a45b7d | 987 | get_formatted_print_options (&opts, format); |
a6bac58e | 988 | opts.raw = fmt.raw; |
79a45b7d TT |
989 | |
990 | print_formatted (val, fmt.size, &opts, gdb_stdout); | |
c906108c SS |
991 | printf_filtered ("\n"); |
992 | ||
993 | if (histindex >= 0) | |
994 | annotate_value_history_end (); | |
995 | else | |
996 | annotate_value_end (); | |
c906108c SS |
997 | } |
998 | ||
999 | if (cleanup) | |
1000 | do_cleanups (old_chain); | |
c906108c SS |
1001 | } |
1002 | ||
c906108c | 1003 | static void |
fba45db2 | 1004 | print_command (char *exp, int from_tty) |
c906108c | 1005 | { |
e93a8774 | 1006 | print_command_1 (exp, 1); |
c906108c SS |
1007 | } |
1008 | ||
675dcf4f | 1009 | /* Same as print, except it doesn't print void results. */ |
c906108c | 1010 | static void |
fba45db2 | 1011 | call_command (char *exp, int from_tty) |
c906108c | 1012 | { |
e93a8774 | 1013 | print_command_1 (exp, 0); |
c906108c SS |
1014 | } |
1015 | ||
6f937416 PA |
1016 | /* Implementation of the "output" command. */ |
1017 | ||
1018 | static void | |
fba45db2 | 1019 | output_command (char *exp, int from_tty) |
6f937416 PA |
1020 | { |
1021 | output_command_const (exp, from_tty); | |
1022 | } | |
1023 | ||
1024 | /* Like output_command, but takes a const string as argument. */ | |
1025 | ||
1026 | void | |
1027 | output_command_const (const char *exp, int from_tty) | |
c906108c SS |
1028 | { |
1029 | struct expression *expr; | |
52f0bd74 AC |
1030 | struct cleanup *old_chain; |
1031 | char format = 0; | |
3d6d86c6 | 1032 | struct value *val; |
c906108c | 1033 | struct format_data fmt; |
79a45b7d | 1034 | struct value_print_options opts; |
c906108c | 1035 | |
777ea8f1 | 1036 | fmt.size = 0; |
a6bac58e | 1037 | fmt.raw = 0; |
777ea8f1 | 1038 | |
c906108c SS |
1039 | if (exp && *exp == '/') |
1040 | { | |
1041 | exp++; | |
1042 | fmt = decode_format (&exp, 0, 0); | |
1043 | validate_format (fmt, "output"); | |
1044 | format = fmt.format; | |
1045 | } | |
1046 | ||
1047 | expr = parse_expression (exp); | |
c13c43fd | 1048 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
1049 | |
1050 | val = evaluate_expression (expr); | |
1051 | ||
df407dfe | 1052 | annotate_value_begin (value_type (val)); |
c906108c | 1053 | |
79a45b7d | 1054 | get_formatted_print_options (&opts, format); |
a6bac58e | 1055 | opts.raw = fmt.raw; |
79a45b7d | 1056 | print_formatted (val, fmt.size, &opts, gdb_stdout); |
c906108c SS |
1057 | |
1058 | annotate_value_end (); | |
1059 | ||
2acceee2 JM |
1060 | wrap_here (""); |
1061 | gdb_flush (gdb_stdout); | |
1062 | ||
c906108c SS |
1063 | do_cleanups (old_chain); |
1064 | } | |
1065 | ||
c906108c | 1066 | static void |
fba45db2 | 1067 | set_command (char *exp, int from_tty) |
c906108c SS |
1068 | { |
1069 | struct expression *expr = parse_expression (exp); | |
52f0bd74 | 1070 | struct cleanup *old_chain = |
c13c43fd | 1071 | make_cleanup (free_current_contents, &expr); |
ad3bbd48 | 1072 | |
0ece64fd TG |
1073 | if (expr->nelts >= 1) |
1074 | switch (expr->elts[0].opcode) | |
1075 | { | |
1076 | case UNOP_PREINCREMENT: | |
1077 | case UNOP_POSTINCREMENT: | |
1078 | case UNOP_PREDECREMENT: | |
1079 | case UNOP_POSTDECREMENT: | |
1080 | case BINOP_ASSIGN: | |
1081 | case BINOP_ASSIGN_MODIFY: | |
1082 | case BINOP_COMMA: | |
1083 | break; | |
1084 | default: | |
1085 | warning | |
1086 | (_("Expression is not an assignment (and might have no effect)")); | |
1087 | } | |
52b3699b | 1088 | |
c906108c SS |
1089 | evaluate_expression (expr); |
1090 | do_cleanups (old_chain); | |
1091 | } | |
1092 | ||
c906108c | 1093 | static void |
fba45db2 | 1094 | sym_info (char *arg, int from_tty) |
c906108c SS |
1095 | { |
1096 | struct minimal_symbol *msymbol; | |
c5aa993b JM |
1097 | struct objfile *objfile; |
1098 | struct obj_section *osect; | |
c5aa993b JM |
1099 | CORE_ADDR addr, sect_addr; |
1100 | int matches = 0; | |
1101 | unsigned int offset; | |
c906108c SS |
1102 | |
1103 | if (!arg) | |
e2e0b3e5 | 1104 | error_no_arg (_("address")); |
c906108c SS |
1105 | |
1106 | addr = parse_and_eval_address (arg); | |
1107 | ALL_OBJSECTIONS (objfile, osect) | |
c5aa993b | 1108 | { |
94277a38 DJ |
1109 | /* Only process each object file once, even if there's a separate |
1110 | debug file. */ | |
1111 | if (objfile->separate_debug_objfile_backlink) | |
1112 | continue; | |
1113 | ||
714835d5 | 1114 | sect_addr = overlay_mapped_address (addr, osect); |
c906108c | 1115 | |
f1f6aadf PA |
1116 | if (obj_section_addr (osect) <= sect_addr |
1117 | && sect_addr < obj_section_endaddr (osect) | |
7cbd4a93 TT |
1118 | && (msymbol |
1119 | = lookup_minimal_symbol_by_pc_section (sect_addr, osect).minsym)) | |
c5aa993b | 1120 | { |
c14c28ba | 1121 | const char *obj_name, *mapped, *sec_name, *msym_name; |
e2fd701e DE |
1122 | char *loc_string; |
1123 | struct cleanup *old_chain; | |
c14c28ba | 1124 | |
c5aa993b JM |
1125 | matches = 1; |
1126 | offset = sect_addr - SYMBOL_VALUE_ADDRESS (msymbol); | |
c14c28ba PP |
1127 | mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped"); |
1128 | sec_name = osect->the_bfd_section->name; | |
1129 | msym_name = SYMBOL_PRINT_NAME (msymbol); | |
1130 | ||
e2fd701e DE |
1131 | /* Don't print the offset if it is zero. |
1132 | We assume there's no need to handle i18n of "sym + offset". */ | |
1133 | if (offset) | |
549ba0f8 | 1134 | loc_string = xstrprintf ("%s + %u", msym_name, offset); |
e2fd701e | 1135 | else |
549ba0f8 | 1136 | loc_string = xstrprintf ("%s", msym_name); |
e2fd701e DE |
1137 | |
1138 | /* Use a cleanup to free loc_string in case the user quits | |
1139 | a pagination request inside printf_filtered. */ | |
1140 | old_chain = make_cleanup (xfree, loc_string); | |
1141 | ||
c14c28ba PP |
1142 | gdb_assert (osect->objfile && osect->objfile->name); |
1143 | obj_name = osect->objfile->name; | |
1144 | ||
1145 | if (MULTI_OBJFILE_P ()) | |
1146 | if (pc_in_unmapped_range (addr, osect)) | |
1147 | if (section_is_overlay (osect)) | |
e2fd701e | 1148 | printf_filtered (_("%s in load address range of " |
c14c28ba | 1149 | "%s overlay section %s of %s\n"), |
e2fd701e | 1150 | loc_string, mapped, sec_name, obj_name); |
c14c28ba | 1151 | else |
e2fd701e | 1152 | printf_filtered (_("%s in load address range of " |
c14c28ba | 1153 | "section %s of %s\n"), |
e2fd701e | 1154 | loc_string, sec_name, obj_name); |
c14c28ba PP |
1155 | else |
1156 | if (section_is_overlay (osect)) | |
e2fd701e DE |
1157 | printf_filtered (_("%s in %s overlay section %s of %s\n"), |
1158 | loc_string, mapped, sec_name, obj_name); | |
c14c28ba | 1159 | else |
e2fd701e DE |
1160 | printf_filtered (_("%s in section %s of %s\n"), |
1161 | loc_string, sec_name, obj_name); | |
c5aa993b | 1162 | else |
c14c28ba PP |
1163 | if (pc_in_unmapped_range (addr, osect)) |
1164 | if (section_is_overlay (osect)) | |
e2fd701e | 1165 | printf_filtered (_("%s in load address range of %s overlay " |
c14c28ba | 1166 | "section %s\n"), |
e2fd701e | 1167 | loc_string, mapped, sec_name); |
c14c28ba | 1168 | else |
e2fd701e DE |
1169 | printf_filtered (_("%s in load address range of section %s\n"), |
1170 | loc_string, sec_name); | |
c14c28ba PP |
1171 | else |
1172 | if (section_is_overlay (osect)) | |
e2fd701e DE |
1173 | printf_filtered (_("%s in %s overlay section %s\n"), |
1174 | loc_string, mapped, sec_name); | |
c14c28ba | 1175 | else |
e2fd701e DE |
1176 | printf_filtered (_("%s in section %s\n"), |
1177 | loc_string, sec_name); | |
1178 | ||
1179 | do_cleanups (old_chain); | |
c5aa993b JM |
1180 | } |
1181 | } | |
c906108c | 1182 | if (matches == 0) |
a3f17187 | 1183 | printf_filtered (_("No symbol matches %s.\n"), arg); |
c906108c SS |
1184 | } |
1185 | ||
c906108c | 1186 | static void |
fba45db2 | 1187 | address_info (char *exp, int from_tty) |
c906108c | 1188 | { |
768a979c UW |
1189 | struct gdbarch *gdbarch; |
1190 | int regno; | |
52f0bd74 AC |
1191 | struct symbol *sym; |
1192 | struct minimal_symbol *msymbol; | |
1193 | long val; | |
714835d5 | 1194 | struct obj_section *section; |
08922a10 | 1195 | CORE_ADDR load_addr, context_pc = 0; |
1993b719 | 1196 | struct field_of_this_result is_a_field_of_this; |
c906108c SS |
1197 | |
1198 | if (exp == 0) | |
8a3fe4f8 | 1199 | error (_("Argument required.")); |
c906108c | 1200 | |
08922a10 | 1201 | sym = lookup_symbol (exp, get_selected_block (&context_pc), VAR_DOMAIN, |
2570f2b7 | 1202 | &is_a_field_of_this); |
c906108c SS |
1203 | if (sym == NULL) |
1204 | { | |
1993b719 | 1205 | if (is_a_field_of_this.type != NULL) |
c906108c SS |
1206 | { |
1207 | printf_filtered ("Symbol \""); | |
1208 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1209 | current_language->la_language, DMGL_ANSI); | |
e2b23ee9 AF |
1210 | printf_filtered ("\" is a field of the local class variable "); |
1211 | if (current_language->la_language == language_objc) | |
2625d86c | 1212 | printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */ |
e2b23ee9 | 1213 | else |
2625d86c | 1214 | printf_filtered ("`this'\n"); |
c906108c SS |
1215 | return; |
1216 | } | |
1217 | ||
1218 | msymbol = lookup_minimal_symbol (exp, NULL, NULL); | |
1219 | ||
1220 | if (msymbol != NULL) | |
1221 | { | |
e27d198c TT |
1222 | struct objfile *objfile = msymbol_objfile (msymbol); |
1223 | ||
1224 | gdbarch = get_objfile_arch (objfile); | |
c906108c SS |
1225 | load_addr = SYMBOL_VALUE_ADDRESS (msymbol); |
1226 | ||
1227 | printf_filtered ("Symbol \""); | |
1228 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1229 | current_language->la_language, DMGL_ANSI); | |
1230 | printf_filtered ("\" is at "); | |
5af949e3 | 1231 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
c906108c | 1232 | printf_filtered (" in a file compiled without debugging"); |
e27d198c | 1233 | section = SYMBOL_OBJ_SECTION (objfile, msymbol); |
c906108c SS |
1234 | if (section_is_overlay (section)) |
1235 | { | |
1236 | load_addr = overlay_unmapped_address (load_addr, section); | |
1237 | printf_filtered (",\n -- loaded at "); | |
5af949e3 | 1238 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1239 | printf_filtered (" in overlay section %s", |
1240 | section->the_bfd_section->name); | |
c906108c SS |
1241 | } |
1242 | printf_filtered (".\n"); | |
1243 | } | |
1244 | else | |
8a3fe4f8 | 1245 | error (_("No symbol \"%s\" in current context."), exp); |
c906108c SS |
1246 | return; |
1247 | } | |
1248 | ||
1249 | printf_filtered ("Symbol \""); | |
3567439c | 1250 | fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym), |
c906108c SS |
1251 | current_language->la_language, DMGL_ANSI); |
1252 | printf_filtered ("\" is "); | |
c5aa993b | 1253 | val = SYMBOL_VALUE (sym); |
e27d198c | 1254 | section = SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym), sym); |
768a979c | 1255 | gdbarch = get_objfile_arch (SYMBOL_SYMTAB (sym)->objfile); |
c906108c | 1256 | |
24d6c2a0 TT |
1257 | if (SYMBOL_COMPUTED_OPS (sym) != NULL) |
1258 | { | |
1259 | SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, context_pc, | |
1260 | gdb_stdout); | |
1261 | printf_filtered (".\n"); | |
1262 | return; | |
1263 | } | |
1264 | ||
c906108c SS |
1265 | switch (SYMBOL_CLASS (sym)) |
1266 | { | |
1267 | case LOC_CONST: | |
1268 | case LOC_CONST_BYTES: | |
1269 | printf_filtered ("constant"); | |
1270 | break; | |
1271 | ||
1272 | case LOC_LABEL: | |
1273 | printf_filtered ("a label at address "); | |
5af949e3 UW |
1274 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
1275 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); | |
c906108c SS |
1276 | if (section_is_overlay (section)) |
1277 | { | |
1278 | load_addr = overlay_unmapped_address (load_addr, section); | |
1279 | printf_filtered (",\n -- loaded at "); | |
5af949e3 | 1280 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1281 | printf_filtered (" in overlay section %s", |
1282 | section->the_bfd_section->name); | |
c906108c SS |
1283 | } |
1284 | break; | |
1285 | ||
4c2df51b | 1286 | case LOC_COMPUTED: |
24d6c2a0 | 1287 | gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method")); |
4c2df51b | 1288 | |
c906108c | 1289 | case LOC_REGISTER: |
768a979c UW |
1290 | /* GDBARCH is the architecture associated with the objfile the symbol |
1291 | is defined in; the target architecture may be different, and may | |
1292 | provide additional registers. However, we do not know the target | |
1293 | architecture at this point. We assume the objfile architecture | |
1294 | will contain all the standard registers that occur in debug info | |
1295 | in that objfile. */ | |
1296 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
1297 | ||
2a2d4dc3 AS |
1298 | if (SYMBOL_IS_ARGUMENT (sym)) |
1299 | printf_filtered (_("an argument in register %s"), | |
768a979c | 1300 | gdbarch_register_name (gdbarch, regno)); |
2a2d4dc3 AS |
1301 | else |
1302 | printf_filtered (_("a variable in register %s"), | |
768a979c | 1303 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1304 | break; |
1305 | ||
1306 | case LOC_STATIC: | |
a3f17187 | 1307 | printf_filtered (_("static storage at address ")); |
5af949e3 UW |
1308 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
1309 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); | |
c906108c SS |
1310 | if (section_is_overlay (section)) |
1311 | { | |
1312 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1313 | printf_filtered (_(",\n -- loaded at ")); |
5af949e3 | 1314 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1315 | printf_filtered (_(" in overlay section %s"), |
1316 | section->the_bfd_section->name); | |
c906108c SS |
1317 | } |
1318 | break; | |
1319 | ||
c906108c | 1320 | case LOC_REGPARM_ADDR: |
768a979c UW |
1321 | /* Note comment at LOC_REGISTER. */ |
1322 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
675dcf4f | 1323 | printf_filtered (_("address of an argument in register %s"), |
768a979c | 1324 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1325 | break; |
1326 | ||
1327 | case LOC_ARG: | |
a3f17187 | 1328 | printf_filtered (_("an argument at offset %ld"), val); |
c906108c SS |
1329 | break; |
1330 | ||
c906108c | 1331 | case LOC_LOCAL: |
a3f17187 | 1332 | printf_filtered (_("a local variable at frame offset %ld"), val); |
c906108c SS |
1333 | break; |
1334 | ||
1335 | case LOC_REF_ARG: | |
a3f17187 | 1336 | printf_filtered (_("a reference argument at offset %ld"), val); |
c906108c SS |
1337 | break; |
1338 | ||
c906108c | 1339 | case LOC_TYPEDEF: |
a3f17187 | 1340 | printf_filtered (_("a typedef")); |
c906108c SS |
1341 | break; |
1342 | ||
1343 | case LOC_BLOCK: | |
a3f17187 | 1344 | printf_filtered (_("a function at address ")); |
675dcf4f | 1345 | load_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); |
5af949e3 | 1346 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
c906108c SS |
1347 | if (section_is_overlay (section)) |
1348 | { | |
1349 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1350 | printf_filtered (_(",\n -- loaded at ")); |
5af949e3 | 1351 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1352 | printf_filtered (_(" in overlay section %s"), |
1353 | section->the_bfd_section->name); | |
c906108c SS |
1354 | } |
1355 | break; | |
1356 | ||
1357 | case LOC_UNRESOLVED: | |
1358 | { | |
e27d198c | 1359 | struct bound_minimal_symbol msym; |
c906108c | 1360 | |
e27d198c TT |
1361 | msym = lookup_minimal_symbol_and_objfile (SYMBOL_LINKAGE_NAME (sym)); |
1362 | if (msym.minsym == NULL) | |
c906108c SS |
1363 | printf_filtered ("unresolved"); |
1364 | else | |
1365 | { | |
e27d198c TT |
1366 | section = SYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
1367 | load_addr = SYMBOL_VALUE_ADDRESS (msym.minsym); | |
e0740f77 JK |
1368 | |
1369 | if (section | |
1370 | && (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0) | |
1371 | printf_filtered (_("a thread-local variable at offset %s " | |
1372 | "in the thread-local storage for `%s'"), | |
5af949e3 UW |
1373 | paddress (gdbarch, load_addr), |
1374 | section->objfile->name); | |
e0740f77 | 1375 | else |
c906108c | 1376 | { |
e0740f77 | 1377 | printf_filtered (_("static storage at address ")); |
5af949e3 | 1378 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
e0740f77 JK |
1379 | if (section_is_overlay (section)) |
1380 | { | |
1381 | load_addr = overlay_unmapped_address (load_addr, section); | |
1382 | printf_filtered (_(",\n -- loaded at ")); | |
5af949e3 | 1383 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
e0740f77 JK |
1384 | printf_filtered (_(" in overlay section %s"), |
1385 | section->the_bfd_section->name); | |
1386 | } | |
c906108c SS |
1387 | } |
1388 | } | |
1389 | } | |
1390 | break; | |
1391 | ||
c906108c | 1392 | case LOC_OPTIMIZED_OUT: |
a3f17187 | 1393 | printf_filtered (_("optimized out")); |
c906108c | 1394 | break; |
c5aa993b | 1395 | |
c906108c | 1396 | default: |
a3f17187 | 1397 | printf_filtered (_("of unknown (botched) type")); |
c906108c SS |
1398 | break; |
1399 | } | |
1400 | printf_filtered (".\n"); | |
1401 | } | |
1402 | \f | |
675dcf4f MK |
1403 | |
1404 | static void | |
fba45db2 | 1405 | x_command (char *exp, int from_tty) |
c906108c SS |
1406 | { |
1407 | struct expression *expr; | |
1408 | struct format_data fmt; | |
1409 | struct cleanup *old_chain; | |
1410 | struct value *val; | |
1411 | ||
a6bac58e | 1412 | fmt.format = last_format ? last_format : 'x'; |
c906108c SS |
1413 | fmt.size = last_size; |
1414 | fmt.count = 1; | |
a6bac58e | 1415 | fmt.raw = 0; |
c906108c SS |
1416 | |
1417 | if (exp && *exp == '/') | |
1418 | { | |
6f937416 PA |
1419 | const char *tmp = exp + 1; |
1420 | ||
1421 | fmt = decode_format (&tmp, last_format, last_size); | |
1422 | exp = (char *) tmp; | |
c906108c SS |
1423 | } |
1424 | ||
1425 | /* If we have an expression, evaluate it and use it as the address. */ | |
1426 | ||
1427 | if (exp != 0 && *exp != 0) | |
1428 | { | |
1429 | expr = parse_expression (exp); | |
675dcf4f MK |
1430 | /* Cause expression not to be there any more if this command is |
1431 | repeated with Newline. But don't clobber a user-defined | |
1432 | command's definition. */ | |
c906108c SS |
1433 | if (from_tty) |
1434 | *exp = 0; | |
c13c43fd | 1435 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c | 1436 | val = evaluate_expression (expr); |
df407dfe | 1437 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_REF) |
e1c34c5d | 1438 | val = coerce_ref (val); |
c906108c | 1439 | /* In rvalue contexts, such as this, functions are coerced into |
c5aa993b | 1440 | pointers to functions. This makes "x/i main" work. */ |
c0d8fd9a | 1441 | if (/* last_format == 'i' && */ |
df407dfe | 1442 | TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC |
c5aa993b | 1443 | && VALUE_LVAL (val) == lval_memory) |
42ae5230 | 1444 | next_address = value_address (val); |
c906108c | 1445 | else |
1aa20aa8 | 1446 | next_address = value_as_address (val); |
5d3729b5 UW |
1447 | |
1448 | next_gdbarch = expr->gdbarch; | |
c906108c SS |
1449 | do_cleanups (old_chain); |
1450 | } | |
1451 | ||
5d3729b5 UW |
1452 | if (!next_gdbarch) |
1453 | error_no_arg (_("starting display address")); | |
1454 | ||
1455 | do_examine (fmt, next_gdbarch, next_address); | |
c906108c | 1456 | |
675dcf4f | 1457 | /* If the examine succeeds, we remember its size and format for next |
9a22f0d0 PM |
1458 | time. Set last_size to 'b' for strings. */ |
1459 | if (fmt.format == 's') | |
1460 | last_size = 'b'; | |
1461 | else | |
1462 | last_size = fmt.size; | |
c906108c SS |
1463 | last_format = fmt.format; |
1464 | ||
0df8b418 | 1465 | /* Set a couple of internal variables if appropriate. */ |
c906108c SS |
1466 | if (last_examine_value) |
1467 | { | |
1468 | /* Make last address examined available to the user as $_. Use | |
c5aa993b | 1469 | the correct pointer type. */ |
4478b372 | 1470 | struct type *pointer_type |
df407dfe | 1471 | = lookup_pointer_type (value_type (last_examine_value)); |
c906108c | 1472 | set_internalvar (lookup_internalvar ("_"), |
4478b372 JB |
1473 | value_from_pointer (pointer_type, |
1474 | last_examine_address)); | |
c5aa993b | 1475 | |
675dcf4f MK |
1476 | /* Make contents of last address examined available to the user |
1477 | as $__. If the last value has not been fetched from memory | |
1478 | then don't fetch it now; instead mark it by voiding the $__ | |
1479 | variable. */ | |
d69fe07e | 1480 | if (value_lazy (last_examine_value)) |
4fa62494 | 1481 | clear_internalvar (lookup_internalvar ("__")); |
c906108c SS |
1482 | else |
1483 | set_internalvar (lookup_internalvar ("__"), last_examine_value); | |
1484 | } | |
1485 | } | |
c906108c | 1486 | \f |
c5aa993b | 1487 | |
c906108c SS |
1488 | /* Add an expression to the auto-display chain. |
1489 | Specify the expression. */ | |
1490 | ||
1491 | static void | |
6f937416 | 1492 | display_command (char *arg, int from_tty) |
c906108c SS |
1493 | { |
1494 | struct format_data fmt; | |
52f0bd74 AC |
1495 | struct expression *expr; |
1496 | struct display *new; | |
c906108c | 1497 | int display_it = 1; |
6f937416 | 1498 | const char *exp = arg; |
c906108c SS |
1499 | |
1500 | #if defined(TUI) | |
021e7609 AC |
1501 | /* NOTE: cagney/2003-02-13 The `tui_active' was previously |
1502 | `tui_version'. */ | |
fd33e6cb | 1503 | if (tui_active && exp != NULL && *exp == '$') |
080ce8c0 | 1504 | display_it = (tui_set_layout_for_display_command (exp) == TUI_FAILURE); |
c906108c SS |
1505 | #endif |
1506 | ||
1507 | if (display_it) | |
1508 | { | |
1509 | if (exp == 0) | |
1510 | { | |
1511 | do_displays (); | |
1512 | return; | |
1513 | } | |
1514 | ||
1515 | if (*exp == '/') | |
1516 | { | |
1517 | exp++; | |
1518 | fmt = decode_format (&exp, 0, 0); | |
1519 | if (fmt.size && fmt.format == 0) | |
1520 | fmt.format = 'x'; | |
1521 | if (fmt.format == 'i' || fmt.format == 's') | |
1522 | fmt.size = 'b'; | |
1523 | } | |
1524 | else | |
1525 | { | |
1526 | fmt.format = 0; | |
1527 | fmt.size = 0; | |
1528 | fmt.count = 0; | |
a6bac58e | 1529 | fmt.raw = 0; |
c906108c SS |
1530 | } |
1531 | ||
a3247a22 | 1532 | innermost_block = NULL; |
c906108c SS |
1533 | expr = parse_expression (exp); |
1534 | ||
1535 | new = (struct display *) xmalloc (sizeof (struct display)); | |
1536 | ||
fa8a61dc | 1537 | new->exp_string = xstrdup (exp); |
c906108c SS |
1538 | new->exp = expr; |
1539 | new->block = innermost_block; | |
6c95b8df | 1540 | new->pspace = current_program_space; |
c906108c SS |
1541 | new->next = display_chain; |
1542 | new->number = ++display_number; | |
1543 | new->format = fmt; | |
b5de0fa7 | 1544 | new->enabled_p = 1; |
c906108c SS |
1545 | display_chain = new; |
1546 | ||
1547 | if (from_tty && target_has_execution) | |
1548 | do_one_display (new); | |
1549 | ||
1550 | dont_repeat (); | |
1551 | } | |
1552 | } | |
1553 | ||
1554 | static void | |
fba45db2 | 1555 | free_display (struct display *d) |
c906108c | 1556 | { |
fa8a61dc | 1557 | xfree (d->exp_string); |
b8c9b27d KB |
1558 | xfree (d->exp); |
1559 | xfree (d); | |
c906108c SS |
1560 | } |
1561 | ||
675dcf4f MK |
1562 | /* Clear out the display_chain. Done when new symtabs are loaded, |
1563 | since this invalidates the types stored in many expressions. */ | |
c906108c SS |
1564 | |
1565 | void | |
fba45db2 | 1566 | clear_displays (void) |
c906108c | 1567 | { |
52f0bd74 | 1568 | struct display *d; |
c906108c SS |
1569 | |
1570 | while ((d = display_chain) != NULL) | |
1571 | { | |
c906108c | 1572 | display_chain = d->next; |
fa8a61dc | 1573 | free_display (d); |
c906108c SS |
1574 | } |
1575 | } | |
1576 | ||
3c3fe74c | 1577 | /* Delete the auto-display DISPLAY. */ |
c906108c SS |
1578 | |
1579 | static void | |
3c3fe74c | 1580 | delete_display (struct display *display) |
c906108c | 1581 | { |
3c3fe74c | 1582 | struct display *d; |
c906108c | 1583 | |
3c3fe74c | 1584 | gdb_assert (display != NULL); |
c906108c | 1585 | |
3c3fe74c PA |
1586 | if (display_chain == display) |
1587 | display_chain = display->next; | |
1588 | ||
1589 | ALL_DISPLAYS (d) | |
1590 | if (d->next == display) | |
c906108c | 1591 | { |
3c3fe74c PA |
1592 | d->next = display->next; |
1593 | break; | |
c906108c | 1594 | } |
3c3fe74c PA |
1595 | |
1596 | free_display (display); | |
c906108c SS |
1597 | } |
1598 | ||
c9174737 PA |
1599 | /* Call FUNCTION on each of the displays whose numbers are given in |
1600 | ARGS. DATA is passed unmodified to FUNCTION. */ | |
c906108c SS |
1601 | |
1602 | static void | |
c9174737 PA |
1603 | map_display_numbers (char *args, |
1604 | void (*function) (struct display *, | |
1605 | void *), | |
1606 | void *data) | |
c906108c | 1607 | { |
197f0a60 | 1608 | struct get_number_or_range_state state; |
c9174737 | 1609 | int num; |
c906108c | 1610 | |
c9174737 PA |
1611 | if (args == NULL) |
1612 | error_no_arg (_("one or more display numbers")); | |
c906108c | 1613 | |
197f0a60 | 1614 | init_number_or_range (&state, args); |
c9174737 | 1615 | |
197f0a60 | 1616 | while (!state.finished) |
c906108c | 1617 | { |
197f0a60 | 1618 | char *p = state.string; |
c906108c | 1619 | |
197f0a60 | 1620 | num = get_number_or_range (&state); |
3c3fe74c PA |
1621 | if (num == 0) |
1622 | warning (_("bad display number at or near '%s'"), p); | |
1623 | else | |
1624 | { | |
c9174737 | 1625 | struct display *d, *tmp; |
c906108c | 1626 | |
c9174737 | 1627 | ALL_DISPLAYS_SAFE (d, tmp) |
3c3fe74c PA |
1628 | if (d->number == num) |
1629 | break; | |
1630 | if (d == NULL) | |
1631 | printf_unfiltered (_("No display number %d.\n"), num); | |
1632 | else | |
c9174737 | 1633 | function (d, data); |
3c3fe74c | 1634 | } |
c906108c | 1635 | } |
c9174737 PA |
1636 | } |
1637 | ||
1638 | /* Callback for map_display_numbers, that deletes a display. */ | |
1639 | ||
1640 | static void | |
1641 | do_delete_display (struct display *d, void *data) | |
1642 | { | |
1643 | delete_display (d); | |
1644 | } | |
1645 | ||
1646 | /* "undisplay" command. */ | |
1647 | ||
1648 | static void | |
1649 | undisplay_command (char *args, int from_tty) | |
1650 | { | |
c9174737 PA |
1651 | if (args == NULL) |
1652 | { | |
1653 | if (query (_("Delete all auto-display expressions? "))) | |
1654 | clear_displays (); | |
1655 | dont_repeat (); | |
1656 | return; | |
1657 | } | |
1658 | ||
1659 | map_display_numbers (args, do_delete_display, NULL); | |
c906108c SS |
1660 | dont_repeat (); |
1661 | } | |
1662 | ||
1663 | /* Display a single auto-display. | |
1664 | Do nothing if the display cannot be printed in the current context, | |
0df8b418 | 1665 | or if the display is disabled. */ |
c906108c SS |
1666 | |
1667 | static void | |
fba45db2 | 1668 | do_one_display (struct display *d) |
c906108c | 1669 | { |
af6e93b2 | 1670 | struct cleanup *old_chain; |
c906108c SS |
1671 | int within_current_scope; |
1672 | ||
b5de0fa7 | 1673 | if (d->enabled_p == 0) |
c906108c SS |
1674 | return; |
1675 | ||
704e9165 UW |
1676 | /* The expression carries the architecture that was used at parse time. |
1677 | This is a problem if the expression depends on architecture features | |
1678 | (e.g. register numbers), and the current architecture is now different. | |
1679 | For example, a display statement like "display/i $pc" is expected to | |
1680 | display the PC register of the current architecture, not the arch at | |
1681 | the time the display command was given. Therefore, we re-parse the | |
1682 | expression if the current architecture has changed. */ | |
1683 | if (d->exp != NULL && d->exp->gdbarch != get_current_arch ()) | |
1684 | { | |
1685 | xfree (d->exp); | |
1686 | d->exp = NULL; | |
1687 | d->block = NULL; | |
1688 | } | |
1689 | ||
a3247a22 PP |
1690 | if (d->exp == NULL) |
1691 | { | |
1692 | volatile struct gdb_exception ex; | |
ad3bbd48 | 1693 | |
a3247a22 PP |
1694 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1695 | { | |
1696 | innermost_block = NULL; | |
1697 | d->exp = parse_expression (d->exp_string); | |
1698 | d->block = innermost_block; | |
1699 | } | |
1700 | if (ex.reason < 0) | |
1701 | { | |
1702 | /* Can't re-parse the expression. Disable this display item. */ | |
1703 | d->enabled_p = 0; | |
1704 | warning (_("Unable to display \"%s\": %s"), | |
1705 | d->exp_string, ex.message); | |
1706 | return; | |
1707 | } | |
1708 | } | |
1709 | ||
c906108c | 1710 | if (d->block) |
6c95b8df PA |
1711 | { |
1712 | if (d->pspace == current_program_space) | |
1713 | within_current_scope = contained_in (get_selected_block (0), d->block); | |
1714 | else | |
1715 | within_current_scope = 0; | |
1716 | } | |
c906108c SS |
1717 | else |
1718 | within_current_scope = 1; | |
1719 | if (!within_current_scope) | |
1720 | return; | |
1721 | ||
9d8fa392 | 1722 | old_chain = make_cleanup_restore_integer (¤t_display_number); |
c906108c SS |
1723 | current_display_number = d->number; |
1724 | ||
1725 | annotate_display_begin (); | |
1726 | printf_filtered ("%d", d->number); | |
1727 | annotate_display_number_end (); | |
1728 | printf_filtered (": "); | |
1729 | if (d->format.size) | |
1730 | { | |
9d8fa392 | 1731 | volatile struct gdb_exception ex; |
c906108c SS |
1732 | |
1733 | annotate_display_format (); | |
1734 | ||
1735 | printf_filtered ("x/"); | |
1736 | if (d->format.count != 1) | |
1737 | printf_filtered ("%d", d->format.count); | |
1738 | printf_filtered ("%c", d->format.format); | |
1739 | if (d->format.format != 'i' && d->format.format != 's') | |
1740 | printf_filtered ("%c", d->format.size); | |
1741 | printf_filtered (" "); | |
1742 | ||
1743 | annotate_display_expression (); | |
1744 | ||
fa8a61dc | 1745 | puts_filtered (d->exp_string); |
c906108c SS |
1746 | annotate_display_expression_end (); |
1747 | ||
6a2eb474 | 1748 | if (d->format.count != 1 || d->format.format == 'i') |
c906108c SS |
1749 | printf_filtered ("\n"); |
1750 | else | |
1751 | printf_filtered (" "); | |
c5aa993b | 1752 | |
c906108c SS |
1753 | annotate_display_value (); |
1754 | ||
9d8fa392 PA |
1755 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
1756 | { | |
1757 | struct value *val; | |
1758 | CORE_ADDR addr; | |
1759 | ||
1760 | val = evaluate_expression (d->exp); | |
1761 | addr = value_as_address (val); | |
1762 | if (d->format.format == 'i') | |
1763 | addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr); | |
1764 | do_examine (d->format, d->exp->gdbarch, addr); | |
1765 | } | |
1766 | if (ex.reason < 0) | |
1767 | fprintf_filtered (gdb_stdout, _("<error: %s>\n"), ex.message); | |
c906108c SS |
1768 | } |
1769 | else | |
1770 | { | |
79a45b7d | 1771 | struct value_print_options opts; |
9d8fa392 | 1772 | volatile struct gdb_exception ex; |
79a45b7d | 1773 | |
c906108c SS |
1774 | annotate_display_format (); |
1775 | ||
1776 | if (d->format.format) | |
1777 | printf_filtered ("/%c ", d->format.format); | |
1778 | ||
1779 | annotate_display_expression (); | |
1780 | ||
fa8a61dc | 1781 | puts_filtered (d->exp_string); |
c906108c SS |
1782 | annotate_display_expression_end (); |
1783 | ||
1784 | printf_filtered (" = "); | |
1785 | ||
1786 | annotate_display_expression (); | |
1787 | ||
79a45b7d | 1788 | get_formatted_print_options (&opts, d->format.format); |
a6bac58e | 1789 | opts.raw = d->format.raw; |
9d8fa392 PA |
1790 | |
1791 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
1792 | { | |
1793 | struct value *val; | |
1794 | ||
1795 | val = evaluate_expression (d->exp); | |
1796 | print_formatted (val, d->format.size, &opts, gdb_stdout); | |
1797 | } | |
1798 | if (ex.reason < 0) | |
1799 | fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.message); | |
c906108c SS |
1800 | printf_filtered ("\n"); |
1801 | } | |
1802 | ||
1803 | annotate_display_end (); | |
1804 | ||
1805 | gdb_flush (gdb_stdout); | |
9d8fa392 | 1806 | do_cleanups (old_chain); |
c906108c SS |
1807 | } |
1808 | ||
1809 | /* Display all of the values on the auto-display chain which can be | |
1810 | evaluated in the current scope. */ | |
1811 | ||
1812 | void | |
fba45db2 | 1813 | do_displays (void) |
c906108c | 1814 | { |
52f0bd74 | 1815 | struct display *d; |
c906108c SS |
1816 | |
1817 | for (d = display_chain; d; d = d->next) | |
1818 | do_one_display (d); | |
1819 | } | |
1820 | ||
1821 | /* Delete the auto-display which we were in the process of displaying. | |
1822 | This is done when there is an error or a signal. */ | |
1823 | ||
1824 | void | |
fba45db2 | 1825 | disable_display (int num) |
c906108c | 1826 | { |
52f0bd74 | 1827 | struct display *d; |
c906108c SS |
1828 | |
1829 | for (d = display_chain; d; d = d->next) | |
1830 | if (d->number == num) | |
1831 | { | |
b5de0fa7 | 1832 | d->enabled_p = 0; |
c906108c SS |
1833 | return; |
1834 | } | |
a3f17187 | 1835 | printf_unfiltered (_("No display number %d.\n"), num); |
c906108c | 1836 | } |
c5aa993b | 1837 | |
c906108c | 1838 | void |
fba45db2 | 1839 | disable_current_display (void) |
c906108c SS |
1840 | { |
1841 | if (current_display_number >= 0) | |
1842 | { | |
1843 | disable_display (current_display_number); | |
3e43a32a MS |
1844 | fprintf_unfiltered (gdb_stderr, |
1845 | _("Disabling display %d to " | |
1846 | "avoid infinite recursion.\n"), | |
c5aa993b | 1847 | current_display_number); |
c906108c SS |
1848 | } |
1849 | current_display_number = -1; | |
1850 | } | |
1851 | ||
1852 | static void | |
fba45db2 | 1853 | display_info (char *ignore, int from_tty) |
c906108c | 1854 | { |
52f0bd74 | 1855 | struct display *d; |
c906108c SS |
1856 | |
1857 | if (!display_chain) | |
a3f17187 | 1858 | printf_unfiltered (_("There are no auto-display expressions now.\n")); |
c906108c | 1859 | else |
a3f17187 AC |
1860 | printf_filtered (_("Auto-display expressions now in effect:\n\ |
1861 | Num Enb Expression\n")); | |
c906108c SS |
1862 | |
1863 | for (d = display_chain; d; d = d->next) | |
1864 | { | |
b5de0fa7 | 1865 | printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]); |
c906108c SS |
1866 | if (d->format.size) |
1867 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
c5aa993b | 1868 | d->format.format); |
c906108c SS |
1869 | else if (d->format.format) |
1870 | printf_filtered ("/%c ", d->format.format); | |
fa8a61dc | 1871 | puts_filtered (d->exp_string); |
ae767bfb | 1872 | if (d->block && !contained_in (get_selected_block (0), d->block)) |
a3f17187 | 1873 | printf_filtered (_(" (cannot be evaluated in the current context)")); |
c906108c SS |
1874 | printf_filtered ("\n"); |
1875 | gdb_flush (gdb_stdout); | |
1876 | } | |
1877 | } | |
1878 | ||
c9174737 PA |
1879 | /* Callback fo map_display_numbers, that enables or disables the |
1880 | passed in display D. */ | |
1881 | ||
c906108c | 1882 | static void |
c9174737 | 1883 | do_enable_disable_display (struct display *d, void *data) |
c906108c | 1884 | { |
c9174737 PA |
1885 | d->enabled_p = *(int *) data; |
1886 | } | |
c906108c | 1887 | |
c9174737 PA |
1888 | /* Implamentation of both the "disable display" and "enable display" |
1889 | commands. ENABLE decides what to do. */ | |
1890 | ||
1891 | static void | |
1892 | enable_disable_display_command (char *args, int from_tty, int enable) | |
1893 | { | |
1894 | if (args == NULL) | |
c906108c | 1895 | { |
c9174737 | 1896 | struct display *d; |
c5aa993b | 1897 | |
c9174737 PA |
1898 | ALL_DISPLAYS (d) |
1899 | d->enabled_p = enable; | |
1900 | return; | |
1901 | } | |
c5aa993b | 1902 | |
c9174737 | 1903 | map_display_numbers (args, do_enable_disable_display, &enable); |
c906108c SS |
1904 | } |
1905 | ||
c9174737 PA |
1906 | /* The "enable display" command. */ |
1907 | ||
c906108c | 1908 | static void |
c9174737 | 1909 | enable_display_command (char *args, int from_tty) |
c906108c | 1910 | { |
c9174737 PA |
1911 | enable_disable_display_command (args, from_tty, 1); |
1912 | } | |
c5aa993b | 1913 | |
c9174737 | 1914 | /* The "disable display" command. */ |
c906108c | 1915 | |
c9174737 PA |
1916 | static void |
1917 | disable_display_command (char *args, int from_tty) | |
1918 | { | |
1919 | enable_disable_display_command (args, from_tty, 0); | |
c906108c | 1920 | } |
a3247a22 | 1921 | |
a3247a22 PP |
1922 | /* display_chain items point to blocks and expressions. Some expressions in |
1923 | turn may point to symbols. | |
1924 | Both symbols and blocks are obstack_alloc'd on objfile_stack, and are | |
1925 | obstack_free'd when a shared library is unloaded. | |
1926 | Clear pointers that are about to become dangling. | |
1927 | Both .exp and .block fields will be restored next time we need to display | |
1928 | an item by re-parsing .exp_string field in the new execution context. */ | |
1929 | ||
1930 | static void | |
1931 | clear_dangling_display_expressions (struct so_list *solib) | |
1932 | { | |
c0201579 | 1933 | struct objfile *objfile = solib->objfile; |
a3247a22 | 1934 | struct display *d; |
a3247a22 | 1935 | |
c0201579 JK |
1936 | /* With no symbol file we cannot have a block or expression from it. */ |
1937 | if (objfile == NULL) | |
1938 | return; | |
1939 | if (objfile->separate_debug_objfile_backlink) | |
1940 | objfile = objfile->separate_debug_objfile_backlink; | |
1941 | gdb_assert (objfile->pspace == solib->pspace); | |
1942 | ||
1943 | for (d = display_chain; d != NULL; d = d->next) | |
a3247a22 | 1944 | { |
c0201579 JK |
1945 | if (d->pspace != solib->pspace) |
1946 | continue; | |
1947 | ||
1948 | if (lookup_objfile_from_block (d->block) == objfile | |
1949 | || (d->exp && exp_uses_objfile (d->exp, objfile))) | |
1950 | { | |
1951 | xfree (d->exp); | |
1952 | d->exp = NULL; | |
1953 | d->block = NULL; | |
1954 | } | |
a3247a22 PP |
1955 | } |
1956 | } | |
c906108c | 1957 | \f |
c5aa993b | 1958 | |
675dcf4f | 1959 | /* Print the value in stack frame FRAME of a variable specified by a |
aad95b57 TT |
1960 | struct symbol. NAME is the name to print; if NULL then VAR's print |
1961 | name will be used. STREAM is the ui_file on which to print the | |
1962 | value. INDENT specifies the number of indent levels to print | |
8f043999 JK |
1963 | before printing the variable name. |
1964 | ||
1965 | This function invalidates FRAME. */ | |
c906108c SS |
1966 | |
1967 | void | |
aad95b57 TT |
1968 | print_variable_and_value (const char *name, struct symbol *var, |
1969 | struct frame_info *frame, | |
1970 | struct ui_file *stream, int indent) | |
c906108c | 1971 | { |
0f6a939d | 1972 | volatile struct gdb_exception except; |
c906108c | 1973 | |
aad95b57 TT |
1974 | if (!name) |
1975 | name = SYMBOL_PRINT_NAME (var); | |
1976 | ||
1977 | fprintf_filtered (stream, "%s%s = ", n_spaces (2 * indent), name); | |
0f6a939d PM |
1978 | TRY_CATCH (except, RETURN_MASK_ERROR) |
1979 | { | |
1980 | struct value *val; | |
1981 | struct value_print_options opts; | |
aad95b57 | 1982 | |
0f6a939d PM |
1983 | val = read_var_value (var, frame); |
1984 | get_user_print_options (&opts); | |
3343315b | 1985 | opts.deref_ref = 1; |
0f6a939d | 1986 | common_val_print (val, stream, indent, &opts, current_language); |
8f043999 JK |
1987 | |
1988 | /* common_val_print invalidates FRAME when a pretty printer calls inferior | |
1989 | function. */ | |
1990 | frame = NULL; | |
0f6a939d PM |
1991 | } |
1992 | if (except.reason < 0) | |
1993 | fprintf_filtered(stream, "<error reading variable %s (%s)>", name, | |
1994 | except.message); | |
aad95b57 | 1995 | fprintf_filtered (stream, "\n"); |
c906108c SS |
1996 | } |
1997 | ||
c2792f5a DE |
1998 | /* Subroutine of ui_printf to simplify it. |
1999 | Print VALUE to STREAM using FORMAT. | |
e12f57ab | 2000 | VALUE is a C-style string on the target. */ |
c2792f5a DE |
2001 | |
2002 | static void | |
2003 | printf_c_string (struct ui_file *stream, const char *format, | |
2004 | struct value *value) | |
2005 | { | |
2006 | gdb_byte *str; | |
2007 | CORE_ADDR tem; | |
2008 | int j; | |
2009 | ||
2010 | tem = value_as_address (value); | |
2011 | ||
2012 | /* This is a %s argument. Find the length of the string. */ | |
2013 | for (j = 0;; j++) | |
2014 | { | |
2015 | gdb_byte c; | |
2016 | ||
2017 | QUIT; | |
2018 | read_memory (tem + j, &c, 1); | |
2019 | if (c == 0) | |
2020 | break; | |
2021 | } | |
2022 | ||
2023 | /* Copy the string contents into a string inside GDB. */ | |
2024 | str = (gdb_byte *) alloca (j + 1); | |
2025 | if (j != 0) | |
2026 | read_memory (tem, str, j); | |
2027 | str[j] = 0; | |
2028 | ||
2029 | fprintf_filtered (stream, format, (char *) str); | |
2030 | } | |
2031 | ||
2032 | /* Subroutine of ui_printf to simplify it. | |
2033 | Print VALUE to STREAM using FORMAT. | |
e12f57ab | 2034 | VALUE is a wide C-style string on the target. */ |
c2792f5a DE |
2035 | |
2036 | static void | |
2037 | printf_wide_c_string (struct ui_file *stream, const char *format, | |
2038 | struct value *value) | |
2039 | { | |
2040 | gdb_byte *str; | |
2041 | CORE_ADDR tem; | |
2042 | int j; | |
2043 | struct gdbarch *gdbarch = get_type_arch (value_type (value)); | |
2044 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
2045 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
2046 | "wchar_t", NULL, 0); | |
2047 | int wcwidth = TYPE_LENGTH (wctype); | |
2048 | gdb_byte *buf = alloca (wcwidth); | |
2049 | struct obstack output; | |
2050 | struct cleanup *inner_cleanup; | |
2051 | ||
2052 | tem = value_as_address (value); | |
2053 | ||
2054 | /* This is a %s argument. Find the length of the string. */ | |
2055 | for (j = 0;; j += wcwidth) | |
2056 | { | |
2057 | QUIT; | |
2058 | read_memory (tem + j, buf, wcwidth); | |
2059 | if (extract_unsigned_integer (buf, wcwidth, byte_order) == 0) | |
2060 | break; | |
2061 | } | |
2062 | ||
2063 | /* Copy the string contents into a string inside GDB. */ | |
2064 | str = (gdb_byte *) alloca (j + wcwidth); | |
2065 | if (j != 0) | |
2066 | read_memory (tem, str, j); | |
2067 | memset (&str[j], 0, wcwidth); | |
2068 | ||
2069 | obstack_init (&output); | |
2070 | inner_cleanup = make_cleanup_obstack_free (&output); | |
2071 | ||
2072 | convert_between_encodings (target_wide_charset (gdbarch), | |
2073 | host_charset (), | |
2074 | str, j, wcwidth, | |
2075 | &output, translit_char); | |
2076 | obstack_grow_str0 (&output, ""); | |
2077 | ||
2078 | fprintf_filtered (stream, format, obstack_base (&output)); | |
2079 | do_cleanups (inner_cleanup); | |
2080 | } | |
2081 | ||
2082 | /* Subroutine of ui_printf to simplify it. | |
2083 | Print VALUE, a decimal floating point value, to STREAM using FORMAT. */ | |
2084 | ||
2085 | static void | |
2086 | printf_decfloat (struct ui_file *stream, const char *format, | |
2087 | struct value *value) | |
2088 | { | |
2089 | const gdb_byte *param_ptr = value_contents (value); | |
2090 | ||
2091 | #if defined (PRINTF_HAS_DECFLOAT) | |
2092 | /* If we have native support for Decimal floating | |
2093 | printing, handle it here. */ | |
2094 | fprintf_filtered (stream, format, param_ptr); | |
2095 | #else | |
2096 | /* As a workaround until vasprintf has native support for DFP | |
2097 | we convert the DFP values to string and print them using | |
2098 | the %s format specifier. */ | |
2099 | const char *p; | |
2100 | ||
2101 | /* Parameter data. */ | |
2102 | struct type *param_type = value_type (value); | |
2103 | struct gdbarch *gdbarch = get_type_arch (param_type); | |
2104 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
2105 | ||
2106 | /* DFP output data. */ | |
2107 | struct value *dfp_value = NULL; | |
2108 | gdb_byte *dfp_ptr; | |
2109 | int dfp_len = 16; | |
2110 | gdb_byte dec[16]; | |
2111 | struct type *dfp_type = NULL; | |
2112 | char decstr[MAX_DECIMAL_STRING]; | |
2113 | ||
2114 | /* Points to the end of the string so that we can go back | |
2115 | and check for DFP length modifiers. */ | |
2116 | p = format + strlen (format); | |
2117 | ||
2118 | /* Look for the float/double format specifier. */ | |
2119 | while (*p != 'f' && *p != 'e' && *p != 'E' | |
2120 | && *p != 'g' && *p != 'G') | |
2121 | p--; | |
2122 | ||
2123 | /* Search for the '%' char and extract the size and type of | |
2124 | the output decimal value based on its modifiers | |
2125 | (%Hf, %Df, %DDf). */ | |
2126 | while (*--p != '%') | |
2127 | { | |
2128 | if (*p == 'H') | |
2129 | { | |
2130 | dfp_len = 4; | |
2131 | dfp_type = builtin_type (gdbarch)->builtin_decfloat; | |
2132 | } | |
2133 | else if (*p == 'D' && *(p - 1) == 'D') | |
2134 | { | |
2135 | dfp_len = 16; | |
2136 | dfp_type = builtin_type (gdbarch)->builtin_declong; | |
2137 | p--; | |
2138 | } | |
2139 | else | |
2140 | { | |
2141 | dfp_len = 8; | |
2142 | dfp_type = builtin_type (gdbarch)->builtin_decdouble; | |
2143 | } | |
2144 | } | |
2145 | ||
2146 | /* Conversion between different DFP types. */ | |
2147 | if (TYPE_CODE (param_type) == TYPE_CODE_DECFLOAT) | |
2148 | decimal_convert (param_ptr, TYPE_LENGTH (param_type), | |
2149 | byte_order, dec, dfp_len, byte_order); | |
2150 | else | |
2151 | /* If this is a non-trivial conversion, just output 0. | |
2152 | A correct converted value can be displayed by explicitly | |
2153 | casting to a DFP type. */ | |
2154 | decimal_from_string (dec, dfp_len, byte_order, "0"); | |
2155 | ||
2156 | dfp_value = value_from_decfloat (dfp_type, dec); | |
2157 | ||
2158 | dfp_ptr = (gdb_byte *) value_contents (dfp_value); | |
2159 | ||
2160 | decimal_to_string (dfp_ptr, dfp_len, byte_order, decstr); | |
2161 | ||
2162 | /* Print the DFP value. */ | |
2163 | fprintf_filtered (stream, "%s", decstr); | |
2164 | #endif | |
2165 | } | |
2166 | ||
2167 | /* Subroutine of ui_printf to simplify it. | |
2168 | Print VALUE, a target pointer, to STREAM using FORMAT. */ | |
2169 | ||
2170 | static void | |
2171 | printf_pointer (struct ui_file *stream, const char *format, | |
2172 | struct value *value) | |
2173 | { | |
2174 | /* We avoid the host's %p because pointers are too | |
2175 | likely to be the wrong size. The only interesting | |
2176 | modifier for %p is a width; extract that, and then | |
2177 | handle %p as glibc would: %#x or a literal "(nil)". */ | |
2178 | ||
2179 | const char *p; | |
2180 | char *fmt, *fmt_p; | |
2181 | #ifdef PRINTF_HAS_LONG_LONG | |
2182 | long long val = value_as_long (value); | |
2183 | #else | |
2184 | long val = value_as_long (value); | |
2185 | #endif | |
2186 | ||
2187 | fmt = alloca (strlen (format) + 5); | |
2188 | ||
2189 | /* Copy up to the leading %. */ | |
2190 | p = format; | |
2191 | fmt_p = fmt; | |
2192 | while (*p) | |
2193 | { | |
2194 | int is_percent = (*p == '%'); | |
2195 | ||
2196 | *fmt_p++ = *p++; | |
2197 | if (is_percent) | |
2198 | { | |
2199 | if (*p == '%') | |
2200 | *fmt_p++ = *p++; | |
2201 | else | |
2202 | break; | |
2203 | } | |
2204 | } | |
2205 | ||
2206 | if (val != 0) | |
2207 | *fmt_p++ = '#'; | |
2208 | ||
2209 | /* Copy any width. */ | |
2210 | while (*p >= '0' && *p < '9') | |
2211 | *fmt_p++ = *p++; | |
2212 | ||
2213 | gdb_assert (*p == 'p' && *(p + 1) == '\0'); | |
2214 | if (val != 0) | |
2215 | { | |
2216 | #ifdef PRINTF_HAS_LONG_LONG | |
2217 | *fmt_p++ = 'l'; | |
2218 | #endif | |
2219 | *fmt_p++ = 'l'; | |
2220 | *fmt_p++ = 'x'; | |
2221 | *fmt_p++ = '\0'; | |
2222 | fprintf_filtered (stream, fmt, val); | |
2223 | } | |
2224 | else | |
2225 | { | |
2226 | *fmt_p++ = 's'; | |
2227 | *fmt_p++ = '\0'; | |
2228 | fprintf_filtered (stream, fmt, "(nil)"); | |
2229 | } | |
2230 | } | |
2231 | ||
a04b0428 JB |
2232 | /* printf "printf format string" ARG to STREAM. */ |
2233 | ||
2234 | static void | |
bbc13ae3 | 2235 | ui_printf (const char *arg, struct ui_file *stream) |
c906108c | 2236 | { |
d3ce09f5 | 2237 | struct format_piece *fpieces; |
bbc13ae3 | 2238 | const char *s = arg; |
3d6d86c6 | 2239 | struct value **val_args; |
c906108c SS |
2240 | int allocated_args = 20; |
2241 | struct cleanup *old_cleanups; | |
2242 | ||
675dcf4f | 2243 | val_args = xmalloc (allocated_args * sizeof (struct value *)); |
c13c43fd | 2244 | old_cleanups = make_cleanup (free_current_contents, &val_args); |
c906108c SS |
2245 | |
2246 | if (s == 0) | |
e2e0b3e5 | 2247 | error_no_arg (_("format-control string and values to print")); |
c906108c | 2248 | |
bbc13ae3 | 2249 | s = skip_spaces_const (s); |
c906108c | 2250 | |
675dcf4f | 2251 | /* A format string should follow, enveloped in double quotes. */ |
c906108c | 2252 | if (*s++ != '"') |
8a3fe4f8 | 2253 | error (_("Bad format string, missing '\"'.")); |
c906108c | 2254 | |
d3ce09f5 | 2255 | fpieces = parse_format_string (&s); |
c906108c | 2256 | |
d3ce09f5 | 2257 | make_cleanup (free_format_pieces_cleanup, &fpieces); |
c906108c | 2258 | |
d3ce09f5 SS |
2259 | if (*s++ != '"') |
2260 | error (_("Bad format string, non-terminated '\"'.")); | |
2261 | ||
bbc13ae3 | 2262 | s = skip_spaces_const (s); |
c906108c SS |
2263 | |
2264 | if (*s != ',' && *s != 0) | |
8a3fe4f8 | 2265 | error (_("Invalid argument syntax")); |
c906108c | 2266 | |
c5aa993b JM |
2267 | if (*s == ',') |
2268 | s++; | |
bbc13ae3 | 2269 | s = skip_spaces_const (s); |
c906108c | 2270 | |
c906108c | 2271 | { |
d3ce09f5 | 2272 | int nargs = 0; |
c906108c | 2273 | int nargs_wanted; |
d3ce09f5 SS |
2274 | int i, fr; |
2275 | char *current_substring; | |
c906108c | 2276 | |
c906108c | 2277 | nargs_wanted = 0; |
d3ce09f5 SS |
2278 | for (fr = 0; fpieces[fr].string != NULL; fr++) |
2279 | if (fpieces[fr].argclass != literal_piece) | |
2280 | ++nargs_wanted; | |
c906108c SS |
2281 | |
2282 | /* Now, parse all arguments and evaluate them. | |
2283 | Store the VALUEs in VAL_ARGS. */ | |
2284 | ||
2285 | while (*s != '\0') | |
2286 | { | |
bbc13ae3 | 2287 | const char *s1; |
ad3bbd48 | 2288 | |
c906108c | 2289 | if (nargs == allocated_args) |
f976f6d4 AC |
2290 | val_args = (struct value **) xrealloc ((char *) val_args, |
2291 | (allocated_args *= 2) | |
2292 | * sizeof (struct value *)); | |
a04b0428 JB |
2293 | s1 = s; |
2294 | val_args[nargs] = parse_to_comma_and_eval (&s1); | |
c5aa993b | 2295 | |
c906108c SS |
2296 | nargs++; |
2297 | s = s1; | |
2298 | if (*s == ',') | |
2299 | s++; | |
2300 | } | |
c5aa993b | 2301 | |
c906108c | 2302 | if (nargs != nargs_wanted) |
8a3fe4f8 | 2303 | error (_("Wrong number of arguments for specified format-string")); |
c906108c SS |
2304 | |
2305 | /* Now actually print them. */ | |
d3ce09f5 SS |
2306 | i = 0; |
2307 | for (fr = 0; fpieces[fr].string != NULL; fr++) | |
c906108c | 2308 | { |
d3ce09f5 SS |
2309 | current_substring = fpieces[fr].string; |
2310 | switch (fpieces[fr].argclass) | |
c906108c SS |
2311 | { |
2312 | case string_arg: | |
c2792f5a | 2313 | printf_c_string (stream, current_substring, val_args[i]); |
c906108c | 2314 | break; |
6c7a06a3 | 2315 | case wide_string_arg: |
c2792f5a | 2316 | printf_wide_c_string (stream, current_substring, val_args[i]); |
6c7a06a3 TT |
2317 | break; |
2318 | case wide_char_arg: | |
2319 | { | |
50810684 UW |
2320 | struct gdbarch *gdbarch |
2321 | = get_type_arch (value_type (val_args[i])); | |
2322 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
e6c014f2 | 2323 | "wchar_t", NULL, 0); |
6c7a06a3 TT |
2324 | struct type *valtype; |
2325 | struct obstack output; | |
2326 | struct cleanup *inner_cleanup; | |
2327 | const gdb_byte *bytes; | |
2328 | ||
2329 | valtype = value_type (val_args[i]); | |
2330 | if (TYPE_LENGTH (valtype) != TYPE_LENGTH (wctype) | |
2331 | || TYPE_CODE (valtype) != TYPE_CODE_INT) | |
2332 | error (_("expected wchar_t argument for %%lc")); | |
2333 | ||
2334 | bytes = value_contents (val_args[i]); | |
2335 | ||
2336 | obstack_init (&output); | |
2337 | inner_cleanup = make_cleanup_obstack_free (&output); | |
2338 | ||
f870a310 | 2339 | convert_between_encodings (target_wide_charset (gdbarch), |
6c7a06a3 TT |
2340 | host_charset (), |
2341 | bytes, TYPE_LENGTH (valtype), | |
2342 | TYPE_LENGTH (valtype), | |
2343 | &output, translit_char); | |
2344 | obstack_grow_str0 (&output, ""); | |
2345 | ||
f1421989 HZ |
2346 | fprintf_filtered (stream, current_substring, |
2347 | obstack_base (&output)); | |
6c7a06a3 TT |
2348 | do_cleanups (inner_cleanup); |
2349 | } | |
2350 | break; | |
c906108c SS |
2351 | case double_arg: |
2352 | { | |
b806fb9a UW |
2353 | struct type *type = value_type (val_args[i]); |
2354 | DOUBLEST val; | |
2355 | int inv; | |
2356 | ||
2357 | /* If format string wants a float, unchecked-convert the value | |
2358 | to floating point of the same size. */ | |
50810684 | 2359 | type = float_type_from_length (type); |
b806fb9a UW |
2360 | val = unpack_double (type, value_contents (val_args[i]), &inv); |
2361 | if (inv) | |
2362 | error (_("Invalid floating value found in program.")); | |
2363 | ||
f1421989 | 2364 | fprintf_filtered (stream, current_substring, (double) val); |
c906108c SS |
2365 | break; |
2366 | } | |
46e9880c DJ |
2367 | case long_double_arg: |
2368 | #ifdef HAVE_LONG_DOUBLE | |
2369 | { | |
b806fb9a UW |
2370 | struct type *type = value_type (val_args[i]); |
2371 | DOUBLEST val; | |
2372 | int inv; | |
2373 | ||
2374 | /* If format string wants a float, unchecked-convert the value | |
2375 | to floating point of the same size. */ | |
50810684 | 2376 | type = float_type_from_length (type); |
b806fb9a UW |
2377 | val = unpack_double (type, value_contents (val_args[i]), &inv); |
2378 | if (inv) | |
2379 | error (_("Invalid floating value found in program.")); | |
2380 | ||
f1421989 HZ |
2381 | fprintf_filtered (stream, current_substring, |
2382 | (long double) val); | |
46e9880c DJ |
2383 | break; |
2384 | } | |
2385 | #else | |
2386 | error (_("long double not supported in printf")); | |
2387 | #endif | |
c906108c | 2388 | case long_long_arg: |
74a0d9f6 | 2389 | #ifdef PRINTF_HAS_LONG_LONG |
c906108c SS |
2390 | { |
2391 | long long val = value_as_long (val_args[i]); | |
ad3bbd48 | 2392 | |
f1421989 | 2393 | fprintf_filtered (stream, current_substring, val); |
c906108c SS |
2394 | break; |
2395 | } | |
2396 | #else | |
8a3fe4f8 | 2397 | error (_("long long not supported in printf")); |
c906108c SS |
2398 | #endif |
2399 | case int_arg: | |
2400 | { | |
46e9880c | 2401 | int val = value_as_long (val_args[i]); |
ad3bbd48 | 2402 | |
f1421989 | 2403 | fprintf_filtered (stream, current_substring, val); |
46e9880c DJ |
2404 | break; |
2405 | } | |
2406 | case long_arg: | |
2407 | { | |
c906108c | 2408 | long val = value_as_long (val_args[i]); |
ad3bbd48 | 2409 | |
f1421989 | 2410 | fprintf_filtered (stream, current_substring, val); |
c906108c SS |
2411 | break; |
2412 | } | |
0aea4bf3 | 2413 | /* Handles decimal floating values. */ |
c2792f5a DE |
2414 | case decfloat_arg: |
2415 | printf_decfloat (stream, current_substring, val_args[i]); | |
2416 | break; | |
2025a643 | 2417 | case ptr_arg: |
c2792f5a DE |
2418 | printf_pointer (stream, current_substring, val_args[i]); |
2419 | break; | |
d3ce09f5 SS |
2420 | case literal_piece: |
2421 | /* Print a portion of the format string that has no | |
2422 | directives. Note that this will not include any | |
2423 | ordinary %-specs, but it might include "%%". That is | |
2424 | why we use printf_filtered and not puts_filtered here. | |
2425 | Also, we pass a dummy argument because some platforms | |
2426 | have modified GCC to include -Wformat-security by | |
2427 | default, which will warn here if there is no | |
2428 | argument. */ | |
2429 | fprintf_filtered (stream, current_substring, 0); | |
2430 | break; | |
675dcf4f MK |
2431 | default: |
2432 | internal_error (__FILE__, __LINE__, | |
2025a643 | 2433 | _("failed internal consistency check")); |
c906108c | 2434 | } |
d3ce09f5 SS |
2435 | /* Maybe advance to the next argument. */ |
2436 | if (fpieces[fr].argclass != literal_piece) | |
2437 | ++i; | |
c906108c | 2438 | } |
c906108c SS |
2439 | } |
2440 | do_cleanups (old_cleanups); | |
2441 | } | |
c906108c | 2442 | |
f1421989 HZ |
2443 | /* Implement the "printf" command. */ |
2444 | ||
a04b0428 | 2445 | static void |
f1421989 HZ |
2446 | printf_command (char *arg, int from_tty) |
2447 | { | |
a04b0428 | 2448 | ui_printf (arg, gdb_stdout); |
f1421989 HZ |
2449 | } |
2450 | ||
2451 | /* Implement the "eval" command. */ | |
2452 | ||
2453 | static void | |
2454 | eval_command (char *arg, int from_tty) | |
2455 | { | |
2456 | struct ui_file *ui_out = mem_fileopen (); | |
2457 | struct cleanup *cleanups = make_cleanup_ui_file_delete (ui_out); | |
2458 | char *expanded; | |
2459 | ||
a04b0428 | 2460 | ui_printf (arg, ui_out); |
f1421989 HZ |
2461 | |
2462 | expanded = ui_file_xstrdup (ui_out, NULL); | |
2463 | make_cleanup (xfree, expanded); | |
2464 | ||
2465 | execute_command (expanded, from_tty); | |
2466 | ||
2467 | do_cleanups (cleanups); | |
2468 | } | |
2469 | ||
c906108c | 2470 | void |
fba45db2 | 2471 | _initialize_printcmd (void) |
c906108c | 2472 | { |
c94fdfd0 EZ |
2473 | struct cmd_list_element *c; |
2474 | ||
c906108c SS |
2475 | current_display_number = -1; |
2476 | ||
a3247a22 PP |
2477 | observer_attach_solib_unloaded (clear_dangling_display_expressions); |
2478 | ||
c906108c | 2479 | add_info ("address", address_info, |
1bedd215 | 2480 | _("Describe where symbol SYM is stored.")); |
c906108c | 2481 | |
1bedd215 AC |
2482 | add_info ("symbol", sym_info, _("\ |
2483 | Describe what symbol is at location ADDR.\n\ | |
2484 | Only for symbols with fixed locations (global or static scope).")); | |
c906108c | 2485 | |
1bedd215 AC |
2486 | add_com ("x", class_vars, x_command, _("\ |
2487 | Examine memory: x/FMT ADDRESS.\n\ | |
c906108c SS |
2488 | ADDRESS is an expression for the memory address to examine.\n\ |
2489 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2490 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
1bedd215 AC |
2491 | t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n\ |
2492 | Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ | |
c906108c SS |
2493 | The specified number of objects of the specified size are printed\n\ |
2494 | according to the format.\n\n\ | |
2495 | Defaults for format and size letters are those previously used.\n\ | |
2496 | Default count is 1. Default address is following last thing printed\n\ | |
1bedd215 | 2497 | with this command or \"print\".")); |
c906108c | 2498 | |
c906108c SS |
2499 | #if 0 |
2500 | add_com ("whereis", class_vars, whereis_command, | |
1bedd215 | 2501 | _("Print line number and file of definition of variable.")); |
c906108c | 2502 | #endif |
c5aa993b | 2503 | |
1bedd215 AC |
2504 | add_info ("display", display_info, _("\ |
2505 | Expressions to display when program stops, with code numbers.")); | |
c906108c | 2506 | |
1a966eab AC |
2507 | add_cmd ("undisplay", class_vars, undisplay_command, _("\ |
2508 | Cancel some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2509 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2510 | No argument means cancel all automatic-display expressions.\n\ | |
2511 | \"delete display\" has the same effect as this command.\n\ | |
1a966eab | 2512 | Do \"info display\" to see current list of code numbers."), |
c5aa993b | 2513 | &cmdlist); |
c906108c | 2514 | |
1bedd215 AC |
2515 | add_com ("display", class_vars, display_command, _("\ |
2516 | Print value of expression EXP each time the program stops.\n\ | |
c906108c SS |
2517 | /FMT may be used before EXP as in the \"print\" command.\n\ |
2518 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2519 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2520 | and examining is done as in the \"x\" command.\n\n\ | |
2521 | With no argument, display all currently requested auto-display expressions.\n\ | |
1bedd215 | 2522 | Use \"undisplay\" to cancel display requests previously made.")); |
c906108c | 2523 | |
c9174737 | 2524 | add_cmd ("display", class_vars, enable_display_command, _("\ |
1a966eab | 2525 | Enable some expressions to be displayed when program stops.\n\ |
c906108c SS |
2526 | Arguments are the code numbers of the expressions to resume displaying.\n\ |
2527 | No argument means enable all automatic-display expressions.\n\ | |
1a966eab | 2528 | Do \"info display\" to see current list of code numbers."), &enablelist); |
c906108c | 2529 | |
1a966eab AC |
2530 | add_cmd ("display", class_vars, disable_display_command, _("\ |
2531 | Disable some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2532 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2533 | No argument means disable all automatic-display expressions.\n\ | |
1a966eab | 2534 | Do \"info display\" to see current list of code numbers."), &disablelist); |
c906108c | 2535 | |
1a966eab AC |
2536 | add_cmd ("display", class_vars, undisplay_command, _("\ |
2537 | Cancel some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2538 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2539 | No argument means cancel all automatic-display expressions.\n\ | |
1a966eab | 2540 | Do \"info display\" to see current list of code numbers."), &deletelist); |
c906108c | 2541 | |
1bedd215 AC |
2542 | add_com ("printf", class_vars, printf_command, _("\ |
2543 | printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
2544 | This is useful for formatted output in user-defined commands.")); | |
c906108c | 2545 | |
1bedd215 AC |
2546 | add_com ("output", class_vars, output_command, _("\ |
2547 | Like \"print\" but don't put in value history and don't print newline.\n\ | |
2548 | This is useful in user-defined commands.")); | |
c906108c | 2549 | |
1bedd215 AC |
2550 | add_prefix_cmd ("set", class_vars, set_command, _("\ |
2551 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2552 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2553 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2554 | with $), a register (a few standard names starting with $), or an actual\n\ | |
1bedd215 AC |
2555 | variable in the program being debugged. EXP is any valid expression.\n\ |
2556 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
2557 | \n\ | |
2558 | With a subcommand, this command modifies parts of the gdb environment.\n\ | |
2559 | You can see these environment settings with the \"show\" command."), | |
c5aa993b | 2560 | &setlist, "set ", 1, &cmdlist); |
c906108c | 2561 | if (dbx_commands) |
1bedd215 AC |
2562 | add_com ("assign", class_vars, set_command, _("\ |
2563 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2564 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2565 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2566 | with $), a register (a few standard names starting with $), or an actual\n\ | |
1bedd215 AC |
2567 | variable in the program being debugged. EXP is any valid expression.\n\ |
2568 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
c906108c | 2569 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
1bedd215 | 2570 | You can see these environment settings with the \"show\" command.")); |
c906108c | 2571 | |
0df8b418 | 2572 | /* "call" is the same as "set", but handy for dbx users to call fns. */ |
1bedd215 AC |
2573 | c = add_com ("call", class_vars, call_command, _("\ |
2574 | Call a function in the program.\n\ | |
c906108c SS |
2575 | The argument is the function name and arguments, in the notation of the\n\ |
2576 | current working language. The result is printed and saved in the value\n\ | |
1bedd215 | 2577 | history, if it is not void.")); |
65d12d83 | 2578 | set_cmd_completer (c, expression_completer); |
c906108c | 2579 | |
1a966eab AC |
2580 | add_cmd ("variable", class_vars, set_command, _("\ |
2581 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2582 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2583 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2584 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2585 | variable in the program being debugged. EXP is any valid expression.\n\ | |
1a966eab | 2586 | This may usually be abbreviated to simply \"set\"."), |
c5aa993b | 2587 | &setlist); |
c906108c | 2588 | |
1bedd215 AC |
2589 | c = add_com ("print", class_vars, print_command, _("\ |
2590 | Print value of expression EXP.\n\ | |
c906108c SS |
2591 | Variables accessible are those of the lexical environment of the selected\n\ |
2592 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2593 | \n\ | |
2594 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2595 | $$NUM refers to NUM'th value back from the last one.\n\ | |
1bedd215 AC |
2596 | Names starting with $ refer to registers (with the values they would have\n\ |
2597 | if the program were to return to the stack frame now selected, restoring\n\ | |
c906108c SS |
2598 | all registers saved by frames farther in) or else to debugger\n\ |
2599 | \"convenience\" variables (any such name not a known register).\n\ | |
1bedd215 AC |
2600 | Use assignment expressions to give values to convenience variables.\n\ |
2601 | \n\ | |
c906108c SS |
2602 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ |
2603 | @ is a binary operator for treating consecutive data objects\n\ | |
2604 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2605 | element is FOO, whose second element is stored in the space following\n\ | |
2606 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
1bedd215 AC |
2607 | resides in memory.\n\ |
2608 | \n\ | |
c906108c | 2609 | EXP may be preceded with /FMT, where FMT is a format letter\n\ |
1bedd215 | 2610 | but no count or size letter (see \"x\" command).")); |
65d12d83 | 2611 | set_cmd_completer (c, expression_completer); |
c906108c | 2612 | add_com_alias ("p", "print", class_vars, 1); |
e93a8774 | 2613 | add_com_alias ("inspect", "print", class_vars, 1); |
c906108c | 2614 | |
35096d9d AC |
2615 | add_setshow_uinteger_cmd ("max-symbolic-offset", no_class, |
2616 | &max_symbolic_offset, _("\ | |
2617 | Set the largest offset that will be printed in <symbol+1234> form."), _("\ | |
f81d1120 PA |
2618 | Show the largest offset that will be printed in <symbol+1234> form."), _("\ |
2619 | Tell GDB to only display the symbolic form of an address if the\n\ | |
2620 | offset between the closest earlier symbol and the address is less than\n\ | |
2621 | the specified maximum offset. The default is \"unlimited\", which tells GDB\n\ | |
2622 | to always print the symbolic form of an address if any symbol precedes\n\ | |
2623 | it. Zero is equivalent to \"unlimited\"."), | |
35096d9d | 2624 | NULL, |
920d2a44 | 2625 | show_max_symbolic_offset, |
35096d9d | 2626 | &setprintlist, &showprintlist); |
5bf193a2 AC |
2627 | add_setshow_boolean_cmd ("symbol-filename", no_class, |
2628 | &print_symbol_filename, _("\ | |
2629 | Set printing of source filename and line number with <symbol>."), _("\ | |
2630 | Show printing of source filename and line number with <symbol>."), NULL, | |
2631 | NULL, | |
920d2a44 | 2632 | show_print_symbol_filename, |
5bf193a2 | 2633 | &setprintlist, &showprintlist); |
f1421989 HZ |
2634 | |
2635 | add_com ("eval", no_class, eval_command, _("\ | |
2636 | Convert \"printf format string\", arg1, arg2, arg3, ..., argn to\n\ | |
2637 | a command line, and call it.")); | |
c906108c | 2638 | } |