Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Print values for GNU debugger GDB. |
e2ad119d | 2 | |
42a4f53d | 3 | Copyright (C) 1986-2019 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
c906108c SS |
21 | #include "frame.h" |
22 | #include "symtab.h" | |
23 | #include "gdbtypes.h" | |
24 | #include "value.h" | |
25 | #include "language.h" | |
1f6f6e21 | 26 | #include "c-lang.h" |
c906108c SS |
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" |
fe898f56 | 40 | #include "block.h" |
92bf2b80 | 41 | #include "disasm.h" |
f69fdf9b | 42 | #include "target-float.h" |
76727919 | 43 | #include "observable.h" |
a3247a22 | 44 | #include "solist.h" |
a3247a22 | 45 | #include "parser-defs.h" |
6c7a06a3 | 46 | #include "charset.h" |
704e9165 | 47 | #include "arch-utils.h" |
e9cafbcc | 48 | #include "cli/cli-utils.h" |
7d8062de | 49 | #include "cli/cli-option.h" |
01770bbd | 50 | #include "cli/cli-script.h" |
80ae2043 | 51 | #include "cli/cli-style.h" |
268a13a5 | 52 | #include "gdbsupport/format.h" |
05cba821 | 53 | #include "source.h" |
268a13a5 TT |
54 | #include "gdbsupport/byte-vector.h" |
55 | #include "gdbsupport/gdb_optional.h" | |
c906108c | 56 | |
c906108c SS |
57 | /* Last specified output format. */ |
58 | ||
a6bac58e | 59 | static char last_format = 0; |
c906108c SS |
60 | |
61 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
62 | ||
63 | static char last_size = 'w'; | |
64 | ||
9be2ae8f TT |
65 | /* Last specified count for the 'x' command. */ |
66 | ||
67 | static int last_count; | |
68 | ||
5d3729b5 | 69 | /* Default address to examine next, and associated architecture. */ |
c906108c | 70 | |
5d3729b5 | 71 | static struct gdbarch *next_gdbarch; |
c906108c SS |
72 | static CORE_ADDR next_address; |
73 | ||
a4642986 MR |
74 | /* Number of delay instructions following current disassembled insn. */ |
75 | ||
76 | static int branch_delay_insns; | |
77 | ||
c906108c SS |
78 | /* Last address examined. */ |
79 | ||
80 | static CORE_ADDR last_examine_address; | |
81 | ||
82 | /* Contents of last address examined. | |
83 | This is not valid past the end of the `x' command! */ | |
84 | ||
9b558729 | 85 | static value_ref_ptr last_examine_value; |
c906108c SS |
86 | |
87 | /* Largest offset between a symbolic value and an address, that will be | |
88 | printed as `0x1234 <symbol+offset>'. */ | |
89 | ||
90 | static unsigned int max_symbolic_offset = UINT_MAX; | |
920d2a44 AC |
91 | static void |
92 | show_max_symbolic_offset (struct ui_file *file, int from_tty, | |
93 | struct cmd_list_element *c, const char *value) | |
94 | { | |
3e43a32a MS |
95 | fprintf_filtered (file, |
96 | _("The largest offset that will be " | |
97 | "printed in <symbol+1234> form is %s.\n"), | |
920d2a44 AC |
98 | value); |
99 | } | |
c906108c SS |
100 | |
101 | /* Append the source filename and linenumber of the symbol when | |
102 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
491144b5 | 103 | static bool print_symbol_filename = false; |
920d2a44 AC |
104 | static void |
105 | show_print_symbol_filename (struct ui_file *file, int from_tty, | |
106 | struct cmd_list_element *c, const char *value) | |
107 | { | |
3e43a32a MS |
108 | fprintf_filtered (file, _("Printing of source filename and " |
109 | "line number with <symbol> is %s.\n"), | |
920d2a44 AC |
110 | value); |
111 | } | |
c906108c SS |
112 | |
113 | /* Number of auto-display expression currently being displayed. | |
9d8fa392 | 114 | So that we can disable it if we get a signal within it. |
c906108c SS |
115 | -1 when not doing one. */ |
116 | ||
5a18e302 | 117 | static int current_display_number; |
c906108c | 118 | |
c906108c | 119 | struct display |
c5aa993b JM |
120 | { |
121 | /* Chain link to next auto-display item. */ | |
122 | struct display *next; | |
6c95b8df | 123 | |
fa8a61dc TT |
124 | /* The expression as the user typed it. */ |
125 | char *exp_string; | |
6c95b8df | 126 | |
c5aa993b | 127 | /* Expression to be evaluated and displayed. */ |
4d01a485 | 128 | expression_up exp; |
6c95b8df | 129 | |
c5aa993b JM |
130 | /* Item number of this auto-display item. */ |
131 | int number; | |
6c95b8df | 132 | |
c5aa993b JM |
133 | /* Display format specified. */ |
134 | struct format_data format; | |
6c95b8df PA |
135 | |
136 | /* Program space associated with `block'. */ | |
137 | struct program_space *pspace; | |
138 | ||
0df8b418 | 139 | /* Innermost block required by this expression when evaluated. */ |
270140bd | 140 | const struct block *block; |
6c95b8df | 141 | |
0df8b418 | 142 | /* Status of this display (enabled or disabled). */ |
b5de0fa7 | 143 | int enabled_p; |
c5aa993b | 144 | }; |
c906108c SS |
145 | |
146 | /* Chain of expressions whose values should be displayed | |
147 | automatically each time the program stops. */ | |
148 | ||
149 | static struct display *display_chain; | |
150 | ||
151 | static int display_number; | |
152 | ||
c9174737 PA |
153 | /* Walk the following statement or block through all displays. |
154 | ALL_DISPLAYS_SAFE does so even if the statement deletes the current | |
155 | display. */ | |
3c3fe74c PA |
156 | |
157 | #define ALL_DISPLAYS(B) \ | |
158 | for (B = display_chain; B; B = B->next) | |
159 | ||
c9174737 PA |
160 | #define ALL_DISPLAYS_SAFE(B,TMP) \ |
161 | for (B = display_chain; \ | |
162 | B ? (TMP = B->next, 1): 0; \ | |
163 | B = TMP) | |
164 | ||
0df8b418 | 165 | /* Prototypes for local functions. */ |
c906108c | 166 | |
a14ed312 | 167 | static void do_one_display (struct display *); |
c906108c | 168 | \f |
c5aa993b | 169 | |
c906108c SS |
170 | /* Decode a format specification. *STRING_PTR should point to it. |
171 | OFORMAT and OSIZE are used as defaults for the format and size | |
172 | if none are given in the format specification. | |
173 | If OSIZE is zero, then the size field of the returned value | |
174 | should be set only if a size is explicitly specified by the | |
175 | user. | |
176 | The structure returned describes all the data | |
177 | found in the specification. In addition, *STRING_PTR is advanced | |
178 | past the specification and past all whitespace following it. */ | |
179 | ||
180 | static struct format_data | |
6f937416 | 181 | decode_format (const char **string_ptr, int oformat, int osize) |
c906108c SS |
182 | { |
183 | struct format_data val; | |
6f937416 | 184 | const char *p = *string_ptr; |
c906108c SS |
185 | |
186 | val.format = '?'; | |
187 | val.size = '?'; | |
188 | val.count = 1; | |
a6bac58e | 189 | val.raw = 0; |
c906108c | 190 | |
bb556f1f TK |
191 | if (*p == '-') |
192 | { | |
193 | val.count = -1; | |
194 | p++; | |
195 | } | |
c906108c | 196 | if (*p >= '0' && *p <= '9') |
bb556f1f | 197 | val.count *= atoi (p); |
c5aa993b JM |
198 | while (*p >= '0' && *p <= '9') |
199 | p++; | |
c906108c SS |
200 | |
201 | /* Now process size or format letters that follow. */ | |
202 | ||
203 | while (1) | |
204 | { | |
205 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
206 | val.size = *p++; | |
a6bac58e TT |
207 | else if (*p == 'r') |
208 | { | |
209 | val.raw = 1; | |
210 | p++; | |
211 | } | |
c906108c SS |
212 | else if (*p >= 'a' && *p <= 'z') |
213 | val.format = *p++; | |
214 | else | |
215 | break; | |
216 | } | |
217 | ||
2f433492 | 218 | *string_ptr = skip_spaces (p); |
c906108c SS |
219 | |
220 | /* Set defaults for format and size if not specified. */ | |
221 | if (val.format == '?') | |
222 | { | |
223 | if (val.size == '?') | |
224 | { | |
225 | /* Neither has been specified. */ | |
226 | val.format = oformat; | |
227 | val.size = osize; | |
228 | } | |
229 | else | |
230 | /* If a size is specified, any format makes a reasonable | |
231 | default except 'i'. */ | |
232 | val.format = oformat == 'i' ? 'x' : oformat; | |
233 | } | |
234 | else if (val.size == '?') | |
235 | switch (val.format) | |
236 | { | |
237 | case 'a': | |
5d3729b5 UW |
238 | /* Pick the appropriate size for an address. This is deferred |
239 | until do_examine when we know the actual architecture to use. | |
240 | A special size value of 'a' is used to indicate this case. */ | |
241 | val.size = osize ? 'a' : osize; | |
c906108c SS |
242 | break; |
243 | case 'f': | |
244 | /* Floating point has to be word or giantword. */ | |
245 | if (osize == 'w' || osize == 'g') | |
246 | val.size = osize; | |
247 | else | |
248 | /* Default it to giantword if the last used size is not | |
249 | appropriate. */ | |
250 | val.size = osize ? 'g' : osize; | |
251 | break; | |
252 | case 'c': | |
253 | /* Characters default to one byte. */ | |
254 | val.size = osize ? 'b' : osize; | |
255 | break; | |
9a22f0d0 | 256 | case 's': |
3e43a32a MS |
257 | /* Display strings with byte size chars unless explicitly |
258 | specified. */ | |
9a22f0d0 PM |
259 | val.size = '\0'; |
260 | break; | |
261 | ||
c906108c SS |
262 | default: |
263 | /* The default is the size most recently specified. */ | |
264 | val.size = osize; | |
265 | } | |
266 | ||
267 | return val; | |
268 | } | |
269 | \f | |
79a45b7d | 270 | /* Print value VAL on stream according to OPTIONS. |
c906108c | 271 | Do not end with a newline. |
c906108c | 272 | SIZE is the letter for the size of datum being printed. |
ea37ba09 DJ |
273 | This is used to pad hex numbers so they line up. SIZE is 0 |
274 | for print / output and set for examine. */ | |
c906108c SS |
275 | |
276 | static void | |
79a45b7d TT |
277 | print_formatted (struct value *val, int size, |
278 | const struct value_print_options *options, | |
fba45db2 | 279 | struct ui_file *stream) |
c906108c | 280 | { |
df407dfe | 281 | struct type *type = check_typedef (value_type (val)); |
c906108c SS |
282 | int len = TYPE_LENGTH (type); |
283 | ||
284 | if (VALUE_LVAL (val) == lval_memory) | |
42ae5230 | 285 | next_address = value_address (val) + len; |
c906108c | 286 | |
ea37ba09 | 287 | if (size) |
c906108c | 288 | { |
79a45b7d | 289 | switch (options->format) |
ea37ba09 DJ |
290 | { |
291 | case 's': | |
6c7a06a3 TT |
292 | { |
293 | struct type *elttype = value_type (val); | |
ad3bbd48 | 294 | |
42ae5230 | 295 | next_address = (value_address (val) |
09ca9e2e | 296 | + val_print_string (elttype, NULL, |
42ae5230 | 297 | value_address (val), -1, |
9a22f0d0 | 298 | stream, options) * len); |
6c7a06a3 | 299 | } |
ea37ba09 | 300 | return; |
c906108c | 301 | |
ea37ba09 DJ |
302 | case 'i': |
303 | /* We often wrap here if there are long symbolic names. */ | |
304 | wrap_here (" "); | |
42ae5230 | 305 | next_address = (value_address (val) |
13274fc3 UW |
306 | + gdb_print_insn (get_type_arch (type), |
307 | value_address (val), stream, | |
ea37ba09 DJ |
308 | &branch_delay_insns)); |
309 | return; | |
310 | } | |
c906108c | 311 | } |
ea37ba09 | 312 | |
79a45b7d | 313 | if (options->format == 0 || options->format == 's' |
4e885b20 | 314 | || TYPE_CODE (type) == TYPE_CODE_REF |
ea37ba09 DJ |
315 | || TYPE_CODE (type) == TYPE_CODE_ARRAY |
316 | || TYPE_CODE (type) == TYPE_CODE_STRING | |
317 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
318 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
319 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
79a45b7d | 320 | value_print (val, stream, options); |
ea37ba09 | 321 | else |
b021a221 MS |
322 | /* User specified format, so don't look to the type to tell us |
323 | what to do. */ | |
ab2188aa | 324 | val_print_scalar_formatted (type, |
ab2188aa PA |
325 | value_embedded_offset (val), |
326 | val, | |
327 | options, size, stream); | |
c906108c SS |
328 | } |
329 | ||
b806fb9a UW |
330 | /* Return builtin floating point type of same length as TYPE. |
331 | If no such type is found, return TYPE itself. */ | |
332 | static struct type * | |
50810684 | 333 | float_type_from_length (struct type *type) |
b806fb9a | 334 | { |
50810684 | 335 | struct gdbarch *gdbarch = get_type_arch (type); |
b806fb9a | 336 | const struct builtin_type *builtin = builtin_type (gdbarch); |
b806fb9a | 337 | |
744a8059 | 338 | if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_float)) |
b806fb9a | 339 | type = builtin->builtin_float; |
744a8059 | 340 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_double)) |
b806fb9a | 341 | type = builtin->builtin_double; |
744a8059 | 342 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_long_double)) |
b806fb9a UW |
343 | type = builtin->builtin_long_double; |
344 | ||
345 | return type; | |
346 | } | |
347 | ||
c906108c | 348 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, |
ab2188aa PA |
349 | according to OPTIONS and SIZE on STREAM. Formats s and i are not |
350 | supported at this level. */ | |
c906108c SS |
351 | |
352 | void | |
7c543f7b | 353 | print_scalar_formatted (const gdb_byte *valaddr, struct type *type, |
79a45b7d TT |
354 | const struct value_print_options *options, |
355 | int size, struct ui_file *stream) | |
c906108c | 356 | { |
50810684 | 357 | struct gdbarch *gdbarch = get_type_arch (type); |
c906108c | 358 | unsigned int len = TYPE_LENGTH (type); |
69feb676 | 359 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 360 | |
ab2188aa PA |
361 | /* String printing should go through val_print_scalar_formatted. */ |
362 | gdb_assert (options->format != 's'); | |
ea37ba09 | 363 | |
ef166cf4 | 364 | /* If the value is a pointer, and pointers and addresses are not the |
d0aee0c4 | 365 | same, then at this point, the value's length (in target bytes) is |
17a912b6 | 366 | gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */ |
ef166cf4 | 367 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
69feb676 | 368 | len = gdbarch_addr_bit (gdbarch) / TARGET_CHAR_BIT; |
ef166cf4 | 369 | |
c906108c SS |
370 | /* If we are printing it as unsigned, truncate it in case it is actually |
371 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
372 | (if shorts are 16 bits) instead of 4294967295). */ | |
d9109c80 TT |
373 | if (options->format != 'c' |
374 | && (options->format != 'd' || TYPE_UNSIGNED (type))) | |
c906108c | 375 | { |
d9109c80 TT |
376 | if (len < TYPE_LENGTH (type) && byte_order == BFD_ENDIAN_BIG) |
377 | valaddr += TYPE_LENGTH (type) - len; | |
c906108c SS |
378 | } |
379 | ||
d9109c80 | 380 | if (size != 0 && (options->format == 'x' || options->format == 't')) |
c906108c | 381 | { |
d9109c80 TT |
382 | /* Truncate to fit. */ |
383 | unsigned newlen; | |
384 | switch (size) | |
c906108c | 385 | { |
d9109c80 TT |
386 | case 'b': |
387 | newlen = 1; | |
388 | break; | |
389 | case 'h': | |
390 | newlen = 2; | |
391 | break; | |
392 | case 'w': | |
393 | newlen = 4; | |
394 | break; | |
395 | case 'g': | |
396 | newlen = 8; | |
397 | break; | |
398 | default: | |
399 | error (_("Undefined output size \"%c\"."), size); | |
c906108c | 400 | } |
d9109c80 TT |
401 | if (newlen < len && byte_order == BFD_ENDIAN_BIG) |
402 | valaddr += len - newlen; | |
403 | len = newlen; | |
404 | } | |
c906108c | 405 | |
d9109c80 TT |
406 | /* Historically gdb has printed floats by first casting them to a |
407 | long, and then printing the long. PR cli/16242 suggests changing | |
4e962e74 TT |
408 | this to using C-style hex float format. |
409 | ||
410 | Biased range types must also be unbiased here; the unbiasing is | |
411 | done by unpack_long. */ | |
412 | gdb::byte_vector converted_bytes; | |
413 | /* Some cases below will unpack the value again. In the biased | |
414 | range case, we want to avoid this, so we store the unpacked value | |
415 | here for possible use later. */ | |
416 | gdb::optional<LONGEST> val_long; | |
417 | if ((TYPE_CODE (type) == TYPE_CODE_FLT | |
418 | && (options->format == 'o' | |
419 | || options->format == 'x' | |
420 | || options->format == 't' | |
421 | || options->format == 'z' | |
422 | || options->format == 'd' | |
423 | || options->format == 'u')) | |
424 | || (TYPE_CODE (type) == TYPE_CODE_RANGE | |
425 | && TYPE_RANGE_DATA (type)->bias != 0)) | |
d9109c80 | 426 | { |
4e962e74 TT |
427 | val_long.emplace (unpack_long (type, valaddr)); |
428 | converted_bytes.resize (TYPE_LENGTH (type)); | |
429 | store_signed_integer (converted_bytes.data (), TYPE_LENGTH (type), | |
430 | byte_order, *val_long); | |
431 | valaddr = converted_bytes.data (); | |
d9109c80 | 432 | } |
c906108c | 433 | |
fdf0cbc2 UW |
434 | /* Printing a non-float type as 'f' will interpret the data as if it were |
435 | of a floating-point type of the same length, if that exists. Otherwise, | |
436 | the data is printed as integer. */ | |
437 | char format = options->format; | |
438 | if (format == 'f' && TYPE_CODE (type) != TYPE_CODE_FLT) | |
439 | { | |
440 | type = float_type_from_length (type); | |
441 | if (TYPE_CODE (type) != TYPE_CODE_FLT) | |
442 | format = 0; | |
443 | } | |
444 | ||
445 | switch (format) | |
d9109c80 TT |
446 | { |
447 | case 'o': | |
448 | print_octal_chars (stream, valaddr, len, byte_order); | |
449 | break; | |
d6382fff TT |
450 | case 'd': |
451 | print_decimal_chars (stream, valaddr, len, true, byte_order); | |
452 | break; | |
c906108c | 453 | case 'u': |
d9109c80 | 454 | print_decimal_chars (stream, valaddr, len, false, byte_order); |
c906108c | 455 | break; |
d9109c80 | 456 | case 0: |
d9109c80 TT |
457 | if (TYPE_CODE (type) != TYPE_CODE_FLT) |
458 | { | |
459 | print_decimal_chars (stream, valaddr, len, !TYPE_UNSIGNED (type), | |
460 | byte_order); | |
461 | break; | |
462 | } | |
463 | /* FALLTHROUGH */ | |
464 | case 'f': | |
d9109c80 | 465 | print_floating (valaddr, type, stream); |
c906108c SS |
466 | break; |
467 | ||
d9109c80 TT |
468 | case 't': |
469 | print_binary_chars (stream, valaddr, len, byte_order, size > 0); | |
470 | break; | |
471 | case 'x': | |
472 | print_hex_chars (stream, valaddr, len, byte_order, size > 0); | |
473 | break; | |
474 | case 'z': | |
475 | print_hex_chars (stream, valaddr, len, byte_order, true); | |
c906108c | 476 | break; |
c906108c | 477 | case 'c': |
79a45b7d TT |
478 | { |
479 | struct value_print_options opts = *options; | |
69feb676 | 480 | |
4e962e74 TT |
481 | if (!val_long.has_value ()) |
482 | val_long.emplace (unpack_long (type, valaddr)); | |
d9109c80 | 483 | |
ad3bbd48 | 484 | opts.format = 0; |
79a45b7d | 485 | if (TYPE_UNSIGNED (type)) |
69feb676 UW |
486 | type = builtin_type (gdbarch)->builtin_true_unsigned_char; |
487 | else | |
488 | type = builtin_type (gdbarch)->builtin_true_char; | |
489 | ||
4e962e74 | 490 | value_print (value_from_longest (type, *val_long), stream, &opts); |
79a45b7d | 491 | } |
c906108c SS |
492 | break; |
493 | ||
d9109c80 | 494 | case 'a': |
c906108c | 495 | { |
4e962e74 TT |
496 | if (!val_long.has_value ()) |
497 | val_long.emplace (unpack_long (type, valaddr)); | |
498 | print_address (gdbarch, *val_long, stream); | |
c906108c SS |
499 | } |
500 | break; | |
501 | ||
502 | default: | |
fdf0cbc2 | 503 | error (_("Undefined output format \"%c\"."), format); |
c906108c SS |
504 | } |
505 | } | |
506 | ||
507 | /* Specify default address for `x' command. | |
675dcf4f | 508 | The `info lines' command uses this. */ |
c906108c SS |
509 | |
510 | void | |
8b9b9e1a | 511 | set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 512 | { |
8b9b9e1a UW |
513 | struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
514 | ||
5d3729b5 | 515 | next_gdbarch = gdbarch; |
c906108c SS |
516 | next_address = addr; |
517 | ||
518 | /* Make address available to the user as $_. */ | |
519 | set_internalvar (lookup_internalvar ("_"), | |
8b9b9e1a | 520 | value_from_pointer (ptr_type, addr)); |
c906108c SS |
521 | } |
522 | ||
523 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
524 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
525 | Optionally also print source file and line number, if available. | |
526 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
527 | or to interpret it as a possible C++ name and convert it back to source | |
528 | form. However note that DO_DEMANGLE can be overridden by the specific | |
9cb709b6 TT |
529 | settings of the demangle and asm_demangle variables. Returns |
530 | non-zero if anything was printed; zero otherwise. */ | |
c906108c | 531 | |
9cb709b6 | 532 | int |
22e722e1 DJ |
533 | print_address_symbolic (struct gdbarch *gdbarch, CORE_ADDR addr, |
534 | struct ui_file *stream, | |
a121b7c1 | 535 | int do_demangle, const char *leadin) |
dfcd3bfb | 536 | { |
c7110220 | 537 | std::string name, filename; |
dfcd3bfb JM |
538 | int unmapped = 0; |
539 | int offset = 0; | |
540 | int line = 0; | |
541 | ||
2dc80cf8 KB |
542 | if (build_address_symbolic (gdbarch, addr, do_demangle, false, &name, |
543 | &offset, &filename, &line, &unmapped)) | |
c7110220 | 544 | return 0; |
dfcd3bfb JM |
545 | |
546 | fputs_filtered (leadin, stream); | |
547 | if (unmapped) | |
548 | fputs_filtered ("<*", stream); | |
549 | else | |
550 | fputs_filtered ("<", stream); | |
af79b68d | 551 | fputs_styled (name.c_str (), function_name_style.style (), stream); |
dfcd3bfb | 552 | if (offset != 0) |
a1530dc7 | 553 | fprintf_filtered (stream, "%+d", offset); |
dfcd3bfb JM |
554 | |
555 | /* Append source filename and line number if desired. Give specific | |
556 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
c7110220 | 557 | if (print_symbol_filename && !filename.empty ()) |
dfcd3bfb | 558 | { |
af79b68d TT |
559 | fputs_filtered (line == -1 ? " in " : " at ", stream); |
560 | fputs_styled (filename.c_str (), file_name_style.style (), stream); | |
dfcd3bfb | 561 | if (line != -1) |
af79b68d | 562 | fprintf_filtered (stream, ":%d", line); |
dfcd3bfb JM |
563 | } |
564 | if (unmapped) | |
565 | fputs_filtered ("*>", stream); | |
566 | else | |
567 | fputs_filtered (">", stream); | |
568 | ||
9cb709b6 | 569 | return 1; |
dfcd3bfb JM |
570 | } |
571 | ||
c7110220 TT |
572 | /* See valprint.h. */ |
573 | ||
dfcd3bfb | 574 | int |
22e722e1 DJ |
575 | build_address_symbolic (struct gdbarch *gdbarch, |
576 | CORE_ADDR addr, /* IN */ | |
2dc80cf8 KB |
577 | bool do_demangle, /* IN */ |
578 | bool prefer_sym_over_minsym, /* IN */ | |
c7110220 | 579 | std::string *name, /* OUT */ |
dfcd3bfb | 580 | int *offset, /* OUT */ |
c7110220 | 581 | std::string *filename, /* OUT */ |
dfcd3bfb JM |
582 | int *line, /* OUT */ |
583 | int *unmapped) /* OUT */ | |
c906108c | 584 | { |
77e371c0 | 585 | struct bound_minimal_symbol msymbol; |
c906108c | 586 | struct symbol *symbol; |
c906108c | 587 | CORE_ADDR name_location = 0; |
714835d5 | 588 | struct obj_section *section = NULL; |
0d5cff50 | 589 | const char *name_temp = ""; |
dfcd3bfb | 590 | |
89c83b10 | 591 | /* Let's say it is mapped (not unmapped). */ |
dfcd3bfb | 592 | *unmapped = 0; |
c906108c | 593 | |
dfcd3bfb | 594 | /* Determine if the address is in an overlay, and whether it is |
675dcf4f | 595 | mapped. */ |
c906108c SS |
596 | if (overlay_debugging) |
597 | { | |
598 | section = find_pc_overlay (addr); | |
599 | if (pc_in_unmapped_range (addr, section)) | |
600 | { | |
dfcd3bfb | 601 | *unmapped = 1; |
c906108c SS |
602 | addr = overlay_mapped_address (addr, section); |
603 | } | |
604 | } | |
605 | ||
2dc80cf8 KB |
606 | /* Try to find the address in both the symbol table and the minsyms. |
607 | In most cases, we'll prefer to use the symbol instead of the | |
608 | minsym. However, there are cases (see below) where we'll choose | |
609 | to use the minsym instead. */ | |
c906108c SS |
610 | |
611 | /* This is defective in the sense that it only finds text symbols. So | |
612 | really this is kind of pointless--we should make sure that the | |
613 | minimal symbols have everything we need (by changing that we could | |
614 | save some memory, but for many debug format--ELF/DWARF or | |
615 | anything/stabs--it would be inconvenient to eliminate those minimal | |
616 | symbols anyway). */ | |
77e371c0 | 617 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section); |
c906108c SS |
618 | symbol = find_pc_sect_function (addr, section); |
619 | ||
620 | if (symbol) | |
621 | { | |
22e722e1 DJ |
622 | /* If this is a function (i.e. a code address), strip out any |
623 | non-address bits. For instance, display a pointer to the | |
624 | first instruction of a Thumb function as <function>; the | |
625 | second instruction will be <function+2>, even though the | |
626 | pointer is <function+3>. This matches the ISA behavior. */ | |
627 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
628 | ||
2b1ffcfd | 629 | name_location = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (symbol)); |
406fc7fb | 630 | if (do_demangle || asm_demangle) |
de5ad195 | 631 | name_temp = SYMBOL_PRINT_NAME (symbol); |
c906108c | 632 | else |
3567439c | 633 | name_temp = SYMBOL_LINKAGE_NAME (symbol); |
c906108c SS |
634 | } |
635 | ||
77e371c0 TT |
636 | if (msymbol.minsym != NULL |
637 | && MSYMBOL_HAS_SIZE (msymbol.minsym) | |
638 | && MSYMBOL_SIZE (msymbol.minsym) == 0 | |
639 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text | |
640 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text_gnu_ifunc | |
641 | && MSYMBOL_TYPE (msymbol.minsym) != mst_file_text) | |
642 | msymbol.minsym = NULL; | |
9cb709b6 | 643 | |
77e371c0 | 644 | if (msymbol.minsym != NULL) |
c906108c | 645 | { |
2dc80cf8 KB |
646 | /* Use the minsym if no symbol is found. |
647 | ||
648 | Additionally, use the minsym instead of a (found) symbol if | |
649 | the following conditions all hold: | |
650 | 1) The prefer_sym_over_minsym flag is false. | |
651 | 2) The minsym address is identical to that of the address under | |
652 | consideration. | |
653 | 3) The symbol address is not identical to that of the address | |
654 | under consideration. */ | |
655 | if (symbol == NULL || | |
656 | (!prefer_sym_over_minsym | |
657 | && BMSYMBOL_VALUE_ADDRESS (msymbol) == addr | |
658 | && name_location != addr)) | |
c906108c | 659 | { |
fe8400b4 WN |
660 | /* If this is a function (i.e. a code address), strip out any |
661 | non-address bits. For instance, display a pointer to the | |
662 | first instruction of a Thumb function as <function>; the | |
663 | second instruction will be <function+2>, even though the | |
664 | pointer is <function+3>. This matches the ISA behavior. */ | |
77e371c0 TT |
665 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_text |
666 | || MSYMBOL_TYPE (msymbol.minsym) == mst_text_gnu_ifunc | |
667 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_text | |
668 | || MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
fe8400b4 WN |
669 | addr = gdbarch_addr_bits_remove (gdbarch, addr); |
670 | ||
c906108c | 671 | symbol = 0; |
77e371c0 | 672 | name_location = BMSYMBOL_VALUE_ADDRESS (msymbol); |
406fc7fb | 673 | if (do_demangle || asm_demangle) |
77e371c0 | 674 | name_temp = MSYMBOL_PRINT_NAME (msymbol.minsym); |
c906108c | 675 | else |
77e371c0 | 676 | name_temp = MSYMBOL_LINKAGE_NAME (msymbol.minsym); |
c906108c SS |
677 | } |
678 | } | |
77e371c0 | 679 | if (symbol == NULL && msymbol.minsym == NULL) |
dfcd3bfb | 680 | return 1; |
c906108c | 681 | |
c906108c SS |
682 | /* If the nearest symbol is too far away, don't print anything symbolic. */ |
683 | ||
684 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
685 | CORE_ADDR. But when we detect unsigned wraparound in the | |
686 | CORE_ADDR math, we ignore this test and print the offset, | |
687 | because addr+max_symbolic_offset has wrapped through the end | |
688 | of the address space back to the beginning, giving bogus comparison. */ | |
689 | if (addr > name_location + max_symbolic_offset | |
690 | && name_location + max_symbolic_offset > name_location) | |
dfcd3bfb | 691 | return 1; |
c906108c | 692 | |
a1530dc7 | 693 | *offset = (LONGEST) addr - name_location; |
dfcd3bfb | 694 | |
c7110220 | 695 | *name = name_temp; |
c906108c | 696 | |
c906108c SS |
697 | if (print_symbol_filename) |
698 | { | |
699 | struct symtab_and_line sal; | |
700 | ||
701 | sal = find_pc_sect_line (addr, section, 0); | |
702 | ||
703 | if (sal.symtab) | |
dfcd3bfb | 704 | { |
c7110220 | 705 | *filename = symtab_to_filename_for_display (sal.symtab); |
dfcd3bfb JM |
706 | *line = sal.line; |
707 | } | |
c906108c | 708 | } |
dfcd3bfb | 709 | return 0; |
c906108c SS |
710 | } |
711 | ||
c906108c SS |
712 | |
713 | /* Print address ADDR symbolically on STREAM. | |
714 | First print it as a number. Then perhaps print | |
715 | <SYMBOL + OFFSET> after the number. */ | |
716 | ||
717 | void | |
5af949e3 UW |
718 | print_address (struct gdbarch *gdbarch, |
719 | CORE_ADDR addr, struct ui_file *stream) | |
c906108c | 720 | { |
35fb8261 | 721 | fputs_styled (paddress (gdbarch, addr), address_style.style (), stream); |
22e722e1 | 722 | print_address_symbolic (gdbarch, addr, stream, asm_demangle, " "); |
c906108c SS |
723 | } |
724 | ||
2b28d209 PP |
725 | /* Return a prefix for instruction address: |
726 | "=> " for current instruction, else " ". */ | |
727 | ||
728 | const char * | |
729 | pc_prefix (CORE_ADDR addr) | |
730 | { | |
731 | if (has_stack_frames ()) | |
732 | { | |
733 | struct frame_info *frame; | |
734 | CORE_ADDR pc; | |
735 | ||
736 | frame = get_selected_frame (NULL); | |
ce406537 | 737 | if (get_frame_pc_if_available (frame, &pc) && pc == addr) |
2b28d209 PP |
738 | return "=> "; |
739 | } | |
740 | return " "; | |
741 | } | |
742 | ||
c906108c SS |
743 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE |
744 | controls whether to print the symbolic name "raw" or demangled. | |
9cb709b6 | 745 | Return non-zero if anything was printed; zero otherwise. */ |
c906108c | 746 | |
9cb709b6 | 747 | int |
edf0c1b7 TT |
748 | print_address_demangle (const struct value_print_options *opts, |
749 | struct gdbarch *gdbarch, CORE_ADDR addr, | |
5af949e3 | 750 | struct ui_file *stream, int do_demangle) |
c906108c | 751 | { |
1d51a733 | 752 | if (opts->addressprint) |
c906108c | 753 | { |
35fb8261 | 754 | fputs_styled (paddress (gdbarch, addr), address_style.style (), stream); |
22e722e1 | 755 | print_address_symbolic (gdbarch, addr, stream, do_demangle, " "); |
c906108c SS |
756 | } |
757 | else | |
758 | { | |
9cb709b6 | 759 | return print_address_symbolic (gdbarch, addr, stream, do_demangle, ""); |
c906108c | 760 | } |
9cb709b6 | 761 | return 1; |
c906108c SS |
762 | } |
763 | \f | |
764 | ||
bb556f1f TK |
765 | /* Find the address of the instruction that is INST_COUNT instructions before |
766 | the instruction at ADDR. | |
767 | Since some architectures have variable-length instructions, we can't just | |
768 | simply subtract INST_COUNT * INSN_LEN from ADDR. Instead, we use line | |
769 | number information to locate the nearest known instruction boundary, | |
770 | and disassemble forward from there. If we go out of the symbol range | |
771 | during disassembling, we return the lowest address we've got so far and | |
772 | set the number of instructions read to INST_READ. */ | |
773 | ||
774 | static CORE_ADDR | |
775 | find_instruction_backward (struct gdbarch *gdbarch, CORE_ADDR addr, | |
776 | int inst_count, int *inst_read) | |
777 | { | |
778 | /* The vector PCS is used to store instruction addresses within | |
779 | a pc range. */ | |
780 | CORE_ADDR loop_start, loop_end, p; | |
52d214d3 | 781 | std::vector<CORE_ADDR> pcs; |
bb556f1f | 782 | struct symtab_and_line sal; |
bb556f1f TK |
783 | |
784 | *inst_read = 0; | |
785 | loop_start = loop_end = addr; | |
786 | ||
787 | /* In each iteration of the outer loop, we get a pc range that ends before | |
788 | LOOP_START, then we count and store every instruction address of the range | |
789 | iterated in the loop. | |
790 | If the number of instructions counted reaches INST_COUNT, return the | |
791 | stored address that is located INST_COUNT instructions back from ADDR. | |
792 | If INST_COUNT is not reached, we subtract the number of counted | |
793 | instructions from INST_COUNT, and go to the next iteration. */ | |
794 | do | |
795 | { | |
52d214d3 | 796 | pcs.clear (); |
bb556f1f TK |
797 | sal = find_pc_sect_line (loop_start, NULL, 1); |
798 | if (sal.line <= 0) | |
799 | { | |
800 | /* We reach here when line info is not available. In this case, | |
801 | we print a message and just exit the loop. The return value | |
802 | is calculated after the loop. */ | |
803 | printf_filtered (_("No line number information available " | |
804 | "for address ")); | |
805 | wrap_here (" "); | |
806 | print_address (gdbarch, loop_start - 1, gdb_stdout); | |
807 | printf_filtered ("\n"); | |
808 | break; | |
809 | } | |
810 | ||
811 | loop_end = loop_start; | |
812 | loop_start = sal.pc; | |
813 | ||
814 | /* This loop pushes instruction addresses in the range from | |
815 | LOOP_START to LOOP_END. */ | |
816 | for (p = loop_start; p < loop_end;) | |
817 | { | |
52d214d3 | 818 | pcs.push_back (p); |
bb556f1f TK |
819 | p += gdb_insn_length (gdbarch, p); |
820 | } | |
821 | ||
52d214d3 TT |
822 | inst_count -= pcs.size (); |
823 | *inst_read += pcs.size (); | |
bb556f1f TK |
824 | } |
825 | while (inst_count > 0); | |
826 | ||
827 | /* After the loop, the vector PCS has instruction addresses of the last | |
828 | source line we processed, and INST_COUNT has a negative value. | |
829 | We return the address at the index of -INST_COUNT in the vector for | |
830 | the reason below. | |
831 | Let's assume the following instruction addresses and run 'x/-4i 0x400e'. | |
832 | Line X of File | |
833 | 0x4000 | |
834 | 0x4001 | |
835 | 0x4005 | |
836 | Line Y of File | |
837 | 0x4009 | |
838 | 0x400c | |
839 | => 0x400e | |
840 | 0x4011 | |
841 | find_instruction_backward is called with INST_COUNT = 4 and expected to | |
842 | return 0x4001. When we reach here, INST_COUNT is set to -1 because | |
843 | it was subtracted by 2 (from Line Y) and 3 (from Line X). The value | |
844 | 4001 is located at the index 1 of the last iterated line (= Line X), | |
845 | which is simply calculated by -INST_COUNT. | |
846 | The case when the length of PCS is 0 means that we reached an area for | |
847 | which line info is not available. In such case, we return LOOP_START, | |
848 | which was the lowest instruction address that had line info. */ | |
52d214d3 | 849 | p = pcs.size () > 0 ? pcs[-inst_count] : loop_start; |
bb556f1f TK |
850 | |
851 | /* INST_READ includes all instruction addresses in a pc range. Need to | |
852 | exclude the beginning part up to the address we're returning. That | |
853 | is, exclude {0x4000} in the example above. */ | |
854 | if (inst_count < 0) | |
855 | *inst_read += inst_count; | |
856 | ||
bb556f1f TK |
857 | return p; |
858 | } | |
859 | ||
860 | /* Backward read LEN bytes of target memory from address MEMADDR + LEN, | |
861 | placing the results in GDB's memory from MYADDR + LEN. Returns | |
862 | a count of the bytes actually read. */ | |
863 | ||
864 | static int | |
865 | read_memory_backward (struct gdbarch *gdbarch, | |
866 | CORE_ADDR memaddr, gdb_byte *myaddr, int len) | |
867 | { | |
868 | int errcode; | |
869 | int nread; /* Number of bytes actually read. */ | |
870 | ||
871 | /* First try a complete read. */ | |
872 | errcode = target_read_memory (memaddr, myaddr, len); | |
873 | if (errcode == 0) | |
874 | { | |
875 | /* Got it all. */ | |
876 | nread = len; | |
877 | } | |
878 | else | |
879 | { | |
880 | /* Loop, reading one byte at a time until we get as much as we can. */ | |
881 | memaddr += len; | |
882 | myaddr += len; | |
883 | for (nread = 0; nread < len; ++nread) | |
884 | { | |
885 | errcode = target_read_memory (--memaddr, --myaddr, 1); | |
886 | if (errcode != 0) | |
887 | { | |
888 | /* The read was unsuccessful, so exit the loop. */ | |
889 | printf_filtered (_("Cannot access memory at address %s\n"), | |
890 | paddress (gdbarch, memaddr)); | |
891 | break; | |
892 | } | |
893 | } | |
894 | } | |
895 | return nread; | |
896 | } | |
897 | ||
898 | /* Returns true if X (which is LEN bytes wide) is the number zero. */ | |
899 | ||
900 | static int | |
901 | integer_is_zero (const gdb_byte *x, int len) | |
902 | { | |
903 | int i = 0; | |
904 | ||
905 | while (i < len && x[i] == 0) | |
906 | ++i; | |
907 | return (i == len); | |
908 | } | |
909 | ||
910 | /* Find the start address of a string in which ADDR is included. | |
911 | Basically we search for '\0' and return the next address, | |
912 | but if OPTIONS->PRINT_MAX is smaller than the length of a string, | |
913 | we stop searching and return the address to print characters as many as | |
914 | PRINT_MAX from the string. */ | |
915 | ||
916 | static CORE_ADDR | |
917 | find_string_backward (struct gdbarch *gdbarch, | |
918 | CORE_ADDR addr, int count, int char_size, | |
919 | const struct value_print_options *options, | |
920 | int *strings_counted) | |
921 | { | |
922 | const int chunk_size = 0x20; | |
bb556f1f TK |
923 | int read_error = 0; |
924 | int chars_read = 0; | |
925 | int chars_to_read = chunk_size; | |
926 | int chars_counted = 0; | |
927 | int count_original = count; | |
928 | CORE_ADDR string_start_addr = addr; | |
929 | ||
930 | gdb_assert (char_size == 1 || char_size == 2 || char_size == 4); | |
26fcd5d7 | 931 | gdb::byte_vector buffer (chars_to_read * char_size); |
bb556f1f TK |
932 | while (count > 0 && read_error == 0) |
933 | { | |
934 | int i; | |
935 | ||
936 | addr -= chars_to_read * char_size; | |
26fcd5d7 | 937 | chars_read = read_memory_backward (gdbarch, addr, buffer.data (), |
bb556f1f TK |
938 | chars_to_read * char_size); |
939 | chars_read /= char_size; | |
940 | read_error = (chars_read == chars_to_read) ? 0 : 1; | |
941 | /* Searching for '\0' from the end of buffer in backward direction. */ | |
942 | for (i = 0; i < chars_read && count > 0 ; ++i, ++chars_counted) | |
943 | { | |
944 | int offset = (chars_to_read - i - 1) * char_size; | |
945 | ||
26fcd5d7 | 946 | if (integer_is_zero (&buffer[offset], char_size) |
bb556f1f TK |
947 | || chars_counted == options->print_max) |
948 | { | |
949 | /* Found '\0' or reached print_max. As OFFSET is the offset to | |
950 | '\0', we add CHAR_SIZE to return the start address of | |
951 | a string. */ | |
952 | --count; | |
953 | string_start_addr = addr + offset + char_size; | |
954 | chars_counted = 0; | |
955 | } | |
956 | } | |
957 | } | |
958 | ||
959 | /* Update STRINGS_COUNTED with the actual number of loaded strings. */ | |
960 | *strings_counted = count_original - count; | |
961 | ||
962 | if (read_error != 0) | |
963 | { | |
964 | /* In error case, STRING_START_ADDR is pointing to the string that | |
965 | was last successfully loaded. Rewind the partially loaded string. */ | |
966 | string_start_addr -= chars_counted * char_size; | |
967 | } | |
968 | ||
bb556f1f TK |
969 | return string_start_addr; |
970 | } | |
971 | ||
c906108c SS |
972 | /* Examine data at address ADDR in format FMT. |
973 | Fetch it from memory and print on gdb_stdout. */ | |
974 | ||
975 | static void | |
5d3729b5 | 976 | do_examine (struct format_data fmt, struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 977 | { |
52f0bd74 AC |
978 | char format = 0; |
979 | char size; | |
980 | int count = 1; | |
c906108c | 981 | struct type *val_type = NULL; |
52f0bd74 AC |
982 | int i; |
983 | int maxelts; | |
79a45b7d | 984 | struct value_print_options opts; |
bb556f1f TK |
985 | int need_to_update_next_address = 0; |
986 | CORE_ADDR addr_rewound = 0; | |
c906108c SS |
987 | |
988 | format = fmt.format; | |
989 | size = fmt.size; | |
990 | count = fmt.count; | |
5d3729b5 | 991 | next_gdbarch = gdbarch; |
c906108c | 992 | next_address = addr; |
c906108c | 993 | |
9a22f0d0 PM |
994 | /* Instruction format implies fetch single bytes |
995 | regardless of the specified size. | |
996 | The case of strings is handled in decode_format, only explicit | |
997 | size operator are not changed to 'b'. */ | |
998 | if (format == 'i') | |
c906108c SS |
999 | size = 'b'; |
1000 | ||
5d3729b5 UW |
1001 | if (size == 'a') |
1002 | { | |
1003 | /* Pick the appropriate size for an address. */ | |
1004 | if (gdbarch_ptr_bit (next_gdbarch) == 64) | |
1005 | size = 'g'; | |
1006 | else if (gdbarch_ptr_bit (next_gdbarch) == 32) | |
1007 | size = 'w'; | |
1008 | else if (gdbarch_ptr_bit (next_gdbarch) == 16) | |
1009 | size = 'h'; | |
1010 | else | |
1011 | /* Bad value for gdbarch_ptr_bit. */ | |
1012 | internal_error (__FILE__, __LINE__, | |
1013 | _("failed internal consistency check")); | |
1014 | } | |
1015 | ||
1016 | if (size == 'b') | |
df4df182 | 1017 | val_type = builtin_type (next_gdbarch)->builtin_int8; |
c906108c | 1018 | else if (size == 'h') |
df4df182 | 1019 | val_type = builtin_type (next_gdbarch)->builtin_int16; |
c906108c | 1020 | else if (size == 'w') |
df4df182 | 1021 | val_type = builtin_type (next_gdbarch)->builtin_int32; |
c906108c | 1022 | else if (size == 'g') |
df4df182 | 1023 | val_type = builtin_type (next_gdbarch)->builtin_int64; |
c906108c | 1024 | |
9a22f0d0 PM |
1025 | if (format == 's') |
1026 | { | |
1027 | struct type *char_type = NULL; | |
ad3bbd48 | 1028 | |
9a22f0d0 PM |
1029 | /* Search for "char16_t" or "char32_t" types or fall back to 8-bit char |
1030 | if type is not found. */ | |
1031 | if (size == 'h') | |
1032 | char_type = builtin_type (next_gdbarch)->builtin_char16; | |
1033 | else if (size == 'w') | |
1034 | char_type = builtin_type (next_gdbarch)->builtin_char32; | |
1035 | if (char_type) | |
1036 | val_type = char_type; | |
1037 | else | |
1038 | { | |
1039 | if (size != '\0' && size != 'b') | |
0df8b418 MS |
1040 | warning (_("Unable to display strings with " |
1041 | "size '%c', using 'b' instead."), size); | |
9a22f0d0 PM |
1042 | size = 'b'; |
1043 | val_type = builtin_type (next_gdbarch)->builtin_int8; | |
1044 | } | |
1045 | } | |
1046 | ||
c906108c SS |
1047 | maxelts = 8; |
1048 | if (size == 'w') | |
1049 | maxelts = 4; | |
1050 | if (size == 'g') | |
1051 | maxelts = 2; | |
1052 | if (format == 's' || format == 'i') | |
1053 | maxelts = 1; | |
1054 | ||
79a45b7d TT |
1055 | get_formatted_print_options (&opts, format); |
1056 | ||
bb556f1f TK |
1057 | if (count < 0) |
1058 | { | |
1059 | /* This is the negative repeat count case. | |
1060 | We rewind the address based on the given repeat count and format, | |
1061 | then examine memory from there in forward direction. */ | |
1062 | ||
1063 | count = -count; | |
1064 | if (format == 'i') | |
1065 | { | |
1066 | next_address = find_instruction_backward (gdbarch, addr, count, | |
1067 | &count); | |
1068 | } | |
1069 | else if (format == 's') | |
1070 | { | |
1071 | next_address = find_string_backward (gdbarch, addr, count, | |
1072 | TYPE_LENGTH (val_type), | |
1073 | &opts, &count); | |
1074 | } | |
1075 | else | |
1076 | { | |
1077 | next_address = addr - count * TYPE_LENGTH (val_type); | |
1078 | } | |
1079 | ||
1080 | /* The following call to print_formatted updates next_address in every | |
1081 | iteration. In backward case, we store the start address here | |
1082 | and update next_address with it before exiting the function. */ | |
1083 | addr_rewound = (format == 's' | |
1084 | ? next_address - TYPE_LENGTH (val_type) | |
1085 | : next_address); | |
1086 | need_to_update_next_address = 1; | |
1087 | } | |
1088 | ||
c906108c SS |
1089 | /* Print as many objects as specified in COUNT, at most maxelts per line, |
1090 | with the address of the next one at the start of each line. */ | |
1091 | ||
1092 | while (count > 0) | |
1093 | { | |
1094 | QUIT; | |
2b28d209 PP |
1095 | if (format == 'i') |
1096 | fputs_filtered (pc_prefix (next_address), gdb_stdout); | |
5af949e3 | 1097 | print_address (next_gdbarch, next_address, gdb_stdout); |
c906108c SS |
1098 | printf_filtered (":"); |
1099 | for (i = maxelts; | |
1100 | i > 0 && count > 0; | |
1101 | i--, count--) | |
1102 | { | |
1103 | printf_filtered ("\t"); | |
1104 | /* Note that print_formatted sets next_address for the next | |
1105 | object. */ | |
1106 | last_examine_address = next_address; | |
1107 | ||
c906108c | 1108 | /* The value to be displayed is not fetched greedily. |
5d51a2db MR |
1109 | Instead, to avoid the possibility of a fetched value not |
1110 | being used, its retrieval is delayed until the print code | |
c5aa993b JM |
1111 | uses it. When examining an instruction stream, the |
1112 | disassembler will perform its own memory fetch using just | |
1113 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
1114 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
1115 | is left with the byte sequence from the last complete | |
0df8b418 | 1116 | instruction fetched from memory? */ |
9b558729 TT |
1117 | last_examine_value |
1118 | = release_value (value_at_lazy (val_type, next_address)); | |
c906108c | 1119 | |
9b558729 | 1120 | print_formatted (last_examine_value.get (), size, &opts, gdb_stdout); |
a4642986 MR |
1121 | |
1122 | /* Display any branch delay slots following the final insn. */ | |
1123 | if (format == 'i' && count == 1) | |
1124 | count += branch_delay_insns; | |
c906108c SS |
1125 | } |
1126 | printf_filtered ("\n"); | |
c906108c | 1127 | } |
bb556f1f TK |
1128 | |
1129 | if (need_to_update_next_address) | |
1130 | next_address = addr_rewound; | |
c906108c SS |
1131 | } |
1132 | \f | |
1133 | static void | |
8d89f51a | 1134 | validate_format (struct format_data fmt, const char *cmdname) |
c906108c SS |
1135 | { |
1136 | if (fmt.size != 0) | |
8a3fe4f8 | 1137 | error (_("Size letters are meaningless in \"%s\" command."), cmdname); |
c906108c | 1138 | if (fmt.count != 1) |
8a3fe4f8 | 1139 | error (_("Item count other than 1 is meaningless in \"%s\" command."), |
c906108c | 1140 | cmdname); |
ea37ba09 | 1141 | if (fmt.format == 'i') |
8a3fe4f8 | 1142 | error (_("Format letter \"%c\" is meaningless in \"%s\" command."), |
c906108c SS |
1143 | fmt.format, cmdname); |
1144 | } | |
1145 | ||
7d8062de | 1146 | /* Parse print command format string into *OPTS and update *EXPP. |
1c88ceb1 JK |
1147 | CMDNAME should name the current command. */ |
1148 | ||
1149 | void | |
1150 | print_command_parse_format (const char **expp, const char *cmdname, | |
7d8062de | 1151 | value_print_options *opts) |
1c88ceb1 JK |
1152 | { |
1153 | const char *exp = *expp; | |
1154 | ||
1155 | if (exp && *exp == '/') | |
1156 | { | |
7d8062de PA |
1157 | format_data fmt; |
1158 | ||
1c88ceb1 | 1159 | exp++; |
7d8062de PA |
1160 | fmt = decode_format (&exp, last_format, 0); |
1161 | validate_format (fmt, cmdname); | |
1162 | last_format = fmt.format; | |
1163 | ||
1164 | opts->format = fmt.format; | |
1165 | opts->raw = fmt.raw; | |
1c88ceb1 JK |
1166 | } |
1167 | else | |
1168 | { | |
7d8062de PA |
1169 | opts->format = 0; |
1170 | opts->raw = 0; | |
1c88ceb1 JK |
1171 | } |
1172 | ||
1173 | *expp = exp; | |
1174 | } | |
1175 | ||
7d8062de | 1176 | /* See valprint.h. */ |
1c88ceb1 JK |
1177 | |
1178 | void | |
7d8062de | 1179 | print_value (value *val, const value_print_options &opts) |
1c88ceb1 | 1180 | { |
1c88ceb1 JK |
1181 | int histindex = record_latest_value (val); |
1182 | ||
1183 | annotate_value_history_begin (histindex, value_type (val)); | |
1184 | ||
1185 | printf_filtered ("$%d = ", histindex); | |
1186 | ||
1187 | annotate_value_history_value (); | |
1188 | ||
7d8062de | 1189 | print_formatted (val, 0, &opts, gdb_stdout); |
1c88ceb1 JK |
1190 | printf_filtered ("\n"); |
1191 | ||
1192 | annotate_value_history_end (); | |
1193 | } | |
1194 | ||
7d8062de | 1195 | /* Implementation of the "print" and "call" commands. */ |
c906108c SS |
1196 | |
1197 | static void | |
7d8062de | 1198 | print_command_1 (const char *args, int voidprint) |
c906108c | 1199 | { |
3d6d86c6 | 1200 | struct value *val; |
7d8062de PA |
1201 | value_print_options print_opts; |
1202 | ||
1203 | get_user_print_options (&print_opts); | |
1204 | /* Override global settings with explicit options, if any. */ | |
1205 | auto group = make_value_print_options_def_group (&print_opts); | |
1206 | gdb::option::process_options | |
1207 | (&args, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group); | |
1208 | ||
1209 | print_command_parse_format (&args, "print", &print_opts); | |
c906108c | 1210 | |
7d8062de | 1211 | const char *exp = args; |
c906108c | 1212 | |
7d8062de | 1213 | if (exp != nullptr && *exp) |
c906108c | 1214 | { |
4d01a485 PA |
1215 | expression_up expr = parse_expression (exp); |
1216 | val = evaluate_expression (expr.get ()); | |
c906108c SS |
1217 | } |
1218 | else | |
1219 | val = access_value_history (0); | |
1220 | ||
df407dfe AC |
1221 | if (voidprint || (val && value_type (val) && |
1222 | TYPE_CODE (value_type (val)) != TYPE_CODE_VOID)) | |
7d8062de PA |
1223 | print_value (val, print_opts); |
1224 | } | |
1225 | ||
1226 | /* See valprint.h. */ | |
1227 | ||
1228 | void | |
1229 | print_command_completer (struct cmd_list_element *ignore, | |
1230 | completion_tracker &tracker, | |
1231 | const char *text, const char * /*word*/) | |
1232 | { | |
1233 | const auto group = make_value_print_options_def_group (nullptr); | |
1234 | if (gdb::option::complete_options | |
1235 | (tracker, &text, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group)) | |
1236 | return; | |
1237 | ||
1238 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
1239 | expression_completer (ignore, tracker, text, word); | |
c906108c SS |
1240 | } |
1241 | ||
c906108c | 1242 | static void |
0b39b52e | 1243 | print_command (const char *exp, int from_tty) |
c906108c | 1244 | { |
e93a8774 | 1245 | print_command_1 (exp, 1); |
c906108c SS |
1246 | } |
1247 | ||
675dcf4f | 1248 | /* Same as print, except it doesn't print void results. */ |
c906108c | 1249 | static void |
0b39b52e | 1250 | call_command (const char *exp, int from_tty) |
c906108c | 1251 | { |
e93a8774 | 1252 | print_command_1 (exp, 0); |
c906108c SS |
1253 | } |
1254 | ||
6f937416 PA |
1255 | /* Implementation of the "output" command. */ |
1256 | ||
6f937416 | 1257 | void |
122b53ea | 1258 | output_command (const char *exp, int from_tty) |
c906108c | 1259 | { |
52f0bd74 | 1260 | char format = 0; |
3d6d86c6 | 1261 | struct value *val; |
c906108c | 1262 | struct format_data fmt; |
79a45b7d | 1263 | struct value_print_options opts; |
c906108c | 1264 | |
777ea8f1 | 1265 | fmt.size = 0; |
a6bac58e | 1266 | fmt.raw = 0; |
777ea8f1 | 1267 | |
c906108c SS |
1268 | if (exp && *exp == '/') |
1269 | { | |
1270 | exp++; | |
1271 | fmt = decode_format (&exp, 0, 0); | |
1272 | validate_format (fmt, "output"); | |
1273 | format = fmt.format; | |
1274 | } | |
1275 | ||
4d01a485 | 1276 | expression_up expr = parse_expression (exp); |
c906108c | 1277 | |
4d01a485 | 1278 | val = evaluate_expression (expr.get ()); |
c906108c | 1279 | |
df407dfe | 1280 | annotate_value_begin (value_type (val)); |
c906108c | 1281 | |
79a45b7d | 1282 | get_formatted_print_options (&opts, format); |
a6bac58e | 1283 | opts.raw = fmt.raw; |
79a45b7d | 1284 | print_formatted (val, fmt.size, &opts, gdb_stdout); |
c906108c SS |
1285 | |
1286 | annotate_value_end (); | |
1287 | ||
2acceee2 JM |
1288 | wrap_here (""); |
1289 | gdb_flush (gdb_stdout); | |
c906108c SS |
1290 | } |
1291 | ||
c906108c | 1292 | static void |
981a3fb3 | 1293 | set_command (const char *exp, int from_tty) |
c906108c | 1294 | { |
4d01a485 | 1295 | expression_up expr = parse_expression (exp); |
ad3bbd48 | 1296 | |
0ece64fd TG |
1297 | if (expr->nelts >= 1) |
1298 | switch (expr->elts[0].opcode) | |
1299 | { | |
1300 | case UNOP_PREINCREMENT: | |
1301 | case UNOP_POSTINCREMENT: | |
1302 | case UNOP_PREDECREMENT: | |
1303 | case UNOP_POSTDECREMENT: | |
1304 | case BINOP_ASSIGN: | |
1305 | case BINOP_ASSIGN_MODIFY: | |
1306 | case BINOP_COMMA: | |
1307 | break; | |
1308 | default: | |
1309 | warning | |
1310 | (_("Expression is not an assignment (and might have no effect)")); | |
1311 | } | |
52b3699b | 1312 | |
4d01a485 | 1313 | evaluate_expression (expr.get ()); |
c906108c SS |
1314 | } |
1315 | ||
c906108c | 1316 | static void |
1d12d88f | 1317 | info_symbol_command (const char *arg, int from_tty) |
c906108c SS |
1318 | { |
1319 | struct minimal_symbol *msymbol; | |
c5aa993b | 1320 | struct obj_section *osect; |
c5aa993b JM |
1321 | CORE_ADDR addr, sect_addr; |
1322 | int matches = 0; | |
1323 | unsigned int offset; | |
c906108c SS |
1324 | |
1325 | if (!arg) | |
e2e0b3e5 | 1326 | error_no_arg (_("address")); |
c906108c SS |
1327 | |
1328 | addr = parse_and_eval_address (arg); | |
2030c079 | 1329 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 | 1330 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
c5aa993b | 1331 | { |
3b9d3ac2 TT |
1332 | /* Only process each object file once, even if there's a separate |
1333 | debug file. */ | |
1334 | if (objfile->separate_debug_objfile_backlink) | |
1335 | continue; | |
1336 | ||
1337 | sect_addr = overlay_mapped_address (addr, osect); | |
1338 | ||
1339 | if (obj_section_addr (osect) <= sect_addr | |
1340 | && sect_addr < obj_section_endaddr (osect) | |
1341 | && (msymbol | |
1342 | = lookup_minimal_symbol_by_pc_section (sect_addr, | |
1343 | osect).minsym)) | |
5178ed48 | 1344 | { |
3b9d3ac2 TT |
1345 | const char *obj_name, *mapped, *sec_name, *msym_name; |
1346 | const char *loc_string; | |
1347 | ||
1348 | matches = 1; | |
1349 | offset = sect_addr - MSYMBOL_VALUE_ADDRESS (objfile, msymbol); | |
1350 | mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped"); | |
1351 | sec_name = osect->the_bfd_section->name; | |
1352 | msym_name = MSYMBOL_PRINT_NAME (msymbol); | |
1353 | ||
1354 | /* Don't print the offset if it is zero. | |
1355 | We assume there's no need to handle i18n of "sym + offset". */ | |
1356 | std::string string_holder; | |
1357 | if (offset) | |
1358 | { | |
1359 | string_holder = string_printf ("%s + %u", msym_name, offset); | |
1360 | loc_string = string_holder.c_str (); | |
1361 | } | |
c14c28ba | 1362 | else |
3b9d3ac2 TT |
1363 | loc_string = msym_name; |
1364 | ||
1365 | gdb_assert (osect->objfile && objfile_name (osect->objfile)); | |
1366 | obj_name = objfile_name (osect->objfile); | |
1367 | ||
1368 | if (MULTI_OBJFILE_P ()) | |
1369 | if (pc_in_unmapped_range (addr, osect)) | |
1370 | if (section_is_overlay (osect)) | |
1371 | printf_filtered (_("%s in load address range of " | |
1372 | "%s overlay section %s of %s\n"), | |
1373 | loc_string, mapped, sec_name, obj_name); | |
1374 | else | |
1375 | printf_filtered (_("%s in load address range of " | |
1376 | "section %s of %s\n"), | |
1377 | loc_string, sec_name, obj_name); | |
1378 | else | |
1379 | if (section_is_overlay (osect)) | |
1380 | printf_filtered (_("%s in %s overlay section %s of %s\n"), | |
1381 | loc_string, mapped, sec_name, obj_name); | |
1382 | else | |
1383 | printf_filtered (_("%s in section %s of %s\n"), | |
1384 | loc_string, sec_name, obj_name); | |
c14c28ba | 1385 | else |
3b9d3ac2 TT |
1386 | if (pc_in_unmapped_range (addr, osect)) |
1387 | if (section_is_overlay (osect)) | |
1388 | printf_filtered (_("%s in load address range of %s overlay " | |
1389 | "section %s\n"), | |
1390 | loc_string, mapped, sec_name); | |
1391 | else | |
1392 | printf_filtered | |
1393 | (_("%s in load address range of section %s\n"), | |
1394 | loc_string, sec_name); | |
1395 | else | |
1396 | if (section_is_overlay (osect)) | |
1397 | printf_filtered (_("%s in %s overlay section %s\n"), | |
1398 | loc_string, mapped, sec_name); | |
1399 | else | |
1400 | printf_filtered (_("%s in section %s\n"), | |
1401 | loc_string, sec_name); | |
1402 | } | |
c5aa993b | 1403 | } |
c906108c | 1404 | if (matches == 0) |
a3f17187 | 1405 | printf_filtered (_("No symbol matches %s.\n"), arg); |
c906108c SS |
1406 | } |
1407 | ||
c906108c | 1408 | static void |
1d12d88f | 1409 | info_address_command (const char *exp, int from_tty) |
c906108c | 1410 | { |
768a979c UW |
1411 | struct gdbarch *gdbarch; |
1412 | int regno; | |
52f0bd74 | 1413 | struct symbol *sym; |
7c7b6655 | 1414 | struct bound_minimal_symbol msymbol; |
52f0bd74 | 1415 | long val; |
714835d5 | 1416 | struct obj_section *section; |
08922a10 | 1417 | CORE_ADDR load_addr, context_pc = 0; |
1993b719 | 1418 | struct field_of_this_result is_a_field_of_this; |
c906108c SS |
1419 | |
1420 | if (exp == 0) | |
8a3fe4f8 | 1421 | error (_("Argument required.")); |
c906108c | 1422 | |
08922a10 | 1423 | sym = lookup_symbol (exp, get_selected_block (&context_pc), VAR_DOMAIN, |
d12307c1 | 1424 | &is_a_field_of_this).symbol; |
c906108c SS |
1425 | if (sym == NULL) |
1426 | { | |
1993b719 | 1427 | if (is_a_field_of_this.type != NULL) |
c906108c SS |
1428 | { |
1429 | printf_filtered ("Symbol \""); | |
1430 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1431 | current_language->la_language, DMGL_ANSI); | |
e2b23ee9 AF |
1432 | printf_filtered ("\" is a field of the local class variable "); |
1433 | if (current_language->la_language == language_objc) | |
2625d86c | 1434 | printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */ |
e2b23ee9 | 1435 | else |
2625d86c | 1436 | printf_filtered ("`this'\n"); |
c906108c SS |
1437 | return; |
1438 | } | |
1439 | ||
7c7b6655 | 1440 | msymbol = lookup_bound_minimal_symbol (exp); |
c906108c | 1441 | |
7c7b6655 | 1442 | if (msymbol.minsym != NULL) |
c906108c | 1443 | { |
7c7b6655 | 1444 | struct objfile *objfile = msymbol.objfile; |
e27d198c TT |
1445 | |
1446 | gdbarch = get_objfile_arch (objfile); | |
77e371c0 | 1447 | load_addr = BMSYMBOL_VALUE_ADDRESS (msymbol); |
c906108c SS |
1448 | |
1449 | printf_filtered ("Symbol \""); | |
1450 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1451 | current_language->la_language, DMGL_ANSI); | |
1452 | printf_filtered ("\" is at "); | |
35fb8261 TT |
1453 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1454 | gdb_stdout); | |
c906108c | 1455 | printf_filtered (" in a file compiled without debugging"); |
efd66ac6 | 1456 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
c906108c SS |
1457 | if (section_is_overlay (section)) |
1458 | { | |
1459 | load_addr = overlay_unmapped_address (load_addr, section); | |
1460 | printf_filtered (",\n -- loaded at "); | |
35fb8261 TT |
1461 | fputs_styled (paddress (gdbarch, load_addr), |
1462 | address_style.style (), | |
1463 | gdb_stdout); | |
714835d5 UW |
1464 | printf_filtered (" in overlay section %s", |
1465 | section->the_bfd_section->name); | |
c906108c SS |
1466 | } |
1467 | printf_filtered (".\n"); | |
1468 | } | |
1469 | else | |
8a3fe4f8 | 1470 | error (_("No symbol \"%s\" in current context."), exp); |
c906108c SS |
1471 | return; |
1472 | } | |
1473 | ||
1474 | printf_filtered ("Symbol \""); | |
3567439c | 1475 | fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym), |
c906108c SS |
1476 | current_language->la_language, DMGL_ANSI); |
1477 | printf_filtered ("\" is "); | |
c5aa993b | 1478 | val = SYMBOL_VALUE (sym); |
1994afbf DE |
1479 | if (SYMBOL_OBJFILE_OWNED (sym)) |
1480 | section = SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym); | |
1481 | else | |
1482 | section = NULL; | |
08be3fe3 | 1483 | gdbarch = symbol_arch (sym); |
c906108c | 1484 | |
24d6c2a0 TT |
1485 | if (SYMBOL_COMPUTED_OPS (sym) != NULL) |
1486 | { | |
1487 | SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, context_pc, | |
1488 | gdb_stdout); | |
1489 | printf_filtered (".\n"); | |
1490 | return; | |
1491 | } | |
1492 | ||
c906108c SS |
1493 | switch (SYMBOL_CLASS (sym)) |
1494 | { | |
1495 | case LOC_CONST: | |
1496 | case LOC_CONST_BYTES: | |
1497 | printf_filtered ("constant"); | |
1498 | break; | |
1499 | ||
1500 | case LOC_LABEL: | |
1501 | printf_filtered ("a label at address "); | |
5af949e3 | 1502 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
35fb8261 TT |
1503 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1504 | gdb_stdout); | |
c906108c SS |
1505 | if (section_is_overlay (section)) |
1506 | { | |
1507 | load_addr = overlay_unmapped_address (load_addr, section); | |
1508 | printf_filtered (",\n -- loaded at "); | |
35fb8261 TT |
1509 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1510 | gdb_stdout); | |
714835d5 UW |
1511 | printf_filtered (" in overlay section %s", |
1512 | section->the_bfd_section->name); | |
c906108c SS |
1513 | } |
1514 | break; | |
1515 | ||
4c2df51b | 1516 | case LOC_COMPUTED: |
24d6c2a0 | 1517 | gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method")); |
4c2df51b | 1518 | |
c906108c | 1519 | case LOC_REGISTER: |
768a979c UW |
1520 | /* GDBARCH is the architecture associated with the objfile the symbol |
1521 | is defined in; the target architecture may be different, and may | |
1522 | provide additional registers. However, we do not know the target | |
1523 | architecture at this point. We assume the objfile architecture | |
1524 | will contain all the standard registers that occur in debug info | |
1525 | in that objfile. */ | |
1526 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
1527 | ||
2a2d4dc3 AS |
1528 | if (SYMBOL_IS_ARGUMENT (sym)) |
1529 | printf_filtered (_("an argument in register %s"), | |
768a979c | 1530 | gdbarch_register_name (gdbarch, regno)); |
2a2d4dc3 AS |
1531 | else |
1532 | printf_filtered (_("a variable in register %s"), | |
768a979c | 1533 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1534 | break; |
1535 | ||
1536 | case LOC_STATIC: | |
a3f17187 | 1537 | printf_filtered (_("static storage at address ")); |
5af949e3 | 1538 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
35fb8261 TT |
1539 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1540 | gdb_stdout); | |
c906108c SS |
1541 | if (section_is_overlay (section)) |
1542 | { | |
1543 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1544 | printf_filtered (_(",\n -- loaded at ")); |
35fb8261 TT |
1545 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1546 | gdb_stdout); | |
714835d5 UW |
1547 | printf_filtered (_(" in overlay section %s"), |
1548 | section->the_bfd_section->name); | |
c906108c SS |
1549 | } |
1550 | break; | |
1551 | ||
c906108c | 1552 | case LOC_REGPARM_ADDR: |
768a979c UW |
1553 | /* Note comment at LOC_REGISTER. */ |
1554 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
675dcf4f | 1555 | printf_filtered (_("address of an argument in register %s"), |
768a979c | 1556 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1557 | break; |
1558 | ||
1559 | case LOC_ARG: | |
a3f17187 | 1560 | printf_filtered (_("an argument at offset %ld"), val); |
c906108c SS |
1561 | break; |
1562 | ||
c906108c | 1563 | case LOC_LOCAL: |
a3f17187 | 1564 | printf_filtered (_("a local variable at frame offset %ld"), val); |
c906108c SS |
1565 | break; |
1566 | ||
1567 | case LOC_REF_ARG: | |
a3f17187 | 1568 | printf_filtered (_("a reference argument at offset %ld"), val); |
c906108c SS |
1569 | break; |
1570 | ||
c906108c | 1571 | case LOC_TYPEDEF: |
a3f17187 | 1572 | printf_filtered (_("a typedef")); |
c906108c SS |
1573 | break; |
1574 | ||
1575 | case LOC_BLOCK: | |
a3f17187 | 1576 | printf_filtered (_("a function at address ")); |
2b1ffcfd | 1577 | load_addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
35fb8261 TT |
1578 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1579 | gdb_stdout); | |
c906108c SS |
1580 | if (section_is_overlay (section)) |
1581 | { | |
1582 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1583 | printf_filtered (_(",\n -- loaded at ")); |
35fb8261 TT |
1584 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1585 | gdb_stdout); | |
714835d5 UW |
1586 | printf_filtered (_(" in overlay section %s"), |
1587 | section->the_bfd_section->name); | |
c906108c SS |
1588 | } |
1589 | break; | |
1590 | ||
1591 | case LOC_UNRESOLVED: | |
1592 | { | |
e27d198c | 1593 | struct bound_minimal_symbol msym; |
c906108c | 1594 | |
64cc34d8 | 1595 | msym = lookup_bound_minimal_symbol (SYMBOL_LINKAGE_NAME (sym)); |
e27d198c | 1596 | if (msym.minsym == NULL) |
c906108c SS |
1597 | printf_filtered ("unresolved"); |
1598 | else | |
1599 | { | |
efd66ac6 | 1600 | section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
e0740f77 JK |
1601 | |
1602 | if (section | |
1603 | && (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0) | |
5382cfab PW |
1604 | { |
1605 | load_addr = MSYMBOL_VALUE_RAW_ADDRESS (msym.minsym); | |
1606 | printf_filtered (_("a thread-local variable at offset %s " | |
1607 | "in the thread-local storage for `%s'"), | |
1608 | paddress (gdbarch, load_addr), | |
1609 | objfile_name (section->objfile)); | |
1610 | } | |
e0740f77 | 1611 | else |
c906108c | 1612 | { |
5382cfab | 1613 | load_addr = BMSYMBOL_VALUE_ADDRESS (msym); |
e0740f77 | 1614 | printf_filtered (_("static storage at address ")); |
35fb8261 TT |
1615 | fputs_styled (paddress (gdbarch, load_addr), |
1616 | address_style.style (), gdb_stdout); | |
e0740f77 JK |
1617 | if (section_is_overlay (section)) |
1618 | { | |
1619 | load_addr = overlay_unmapped_address (load_addr, section); | |
1620 | printf_filtered (_(",\n -- loaded at ")); | |
35fb8261 TT |
1621 | fputs_styled (paddress (gdbarch, load_addr), |
1622 | address_style.style (), | |
1623 | gdb_stdout); | |
e0740f77 JK |
1624 | printf_filtered (_(" in overlay section %s"), |
1625 | section->the_bfd_section->name); | |
1626 | } | |
c906108c SS |
1627 | } |
1628 | } | |
1629 | } | |
1630 | break; | |
1631 | ||
c906108c | 1632 | case LOC_OPTIMIZED_OUT: |
a3f17187 | 1633 | printf_filtered (_("optimized out")); |
c906108c | 1634 | break; |
c5aa993b | 1635 | |
c906108c | 1636 | default: |
a3f17187 | 1637 | printf_filtered (_("of unknown (botched) type")); |
c906108c SS |
1638 | break; |
1639 | } | |
1640 | printf_filtered (".\n"); | |
1641 | } | |
1642 | \f | |
675dcf4f MK |
1643 | |
1644 | static void | |
0b39b52e | 1645 | x_command (const char *exp, int from_tty) |
c906108c | 1646 | { |
c906108c | 1647 | struct format_data fmt; |
c906108c SS |
1648 | struct value *val; |
1649 | ||
a6bac58e | 1650 | fmt.format = last_format ? last_format : 'x'; |
c906108c SS |
1651 | fmt.size = last_size; |
1652 | fmt.count = 1; | |
a6bac58e | 1653 | fmt.raw = 0; |
c906108c | 1654 | |
9be2ae8f TT |
1655 | /* If there is no expression and no format, use the most recent |
1656 | count. */ | |
1657 | if (exp == nullptr && last_count > 0) | |
1658 | fmt.count = last_count; | |
1659 | ||
c906108c SS |
1660 | if (exp && *exp == '/') |
1661 | { | |
6f937416 PA |
1662 | const char *tmp = exp + 1; |
1663 | ||
1664 | fmt = decode_format (&tmp, last_format, last_size); | |
1665 | exp = (char *) tmp; | |
c906108c SS |
1666 | } |
1667 | ||
9be2ae8f TT |
1668 | last_count = fmt.count; |
1669 | ||
c906108c SS |
1670 | /* If we have an expression, evaluate it and use it as the address. */ |
1671 | ||
1672 | if (exp != 0 && *exp != 0) | |
1673 | { | |
4d01a485 | 1674 | expression_up expr = parse_expression (exp); |
675dcf4f MK |
1675 | /* Cause expression not to be there any more if this command is |
1676 | repeated with Newline. But don't clobber a user-defined | |
1677 | command's definition. */ | |
c906108c | 1678 | if (from_tty) |
85c4be7c | 1679 | set_repeat_arguments (""); |
4d01a485 | 1680 | val = evaluate_expression (expr.get ()); |
aa006118 | 1681 | if (TYPE_IS_REFERENCE (value_type (val))) |
e1c34c5d | 1682 | val = coerce_ref (val); |
c906108c | 1683 | /* In rvalue contexts, such as this, functions are coerced into |
c5aa993b | 1684 | pointers to functions. This makes "x/i main" work. */ |
c0d8fd9a | 1685 | if (/* last_format == 'i' && */ |
df407dfe | 1686 | TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC |
c5aa993b | 1687 | && VALUE_LVAL (val) == lval_memory) |
42ae5230 | 1688 | next_address = value_address (val); |
c906108c | 1689 | else |
1aa20aa8 | 1690 | next_address = value_as_address (val); |
5d3729b5 UW |
1691 | |
1692 | next_gdbarch = expr->gdbarch; | |
c906108c SS |
1693 | } |
1694 | ||
5d3729b5 UW |
1695 | if (!next_gdbarch) |
1696 | error_no_arg (_("starting display address")); | |
1697 | ||
1698 | do_examine (fmt, next_gdbarch, next_address); | |
c906108c | 1699 | |
675dcf4f | 1700 | /* If the examine succeeds, we remember its size and format for next |
9a22f0d0 PM |
1701 | time. Set last_size to 'b' for strings. */ |
1702 | if (fmt.format == 's') | |
1703 | last_size = 'b'; | |
1704 | else | |
1705 | last_size = fmt.size; | |
c906108c SS |
1706 | last_format = fmt.format; |
1707 | ||
0df8b418 | 1708 | /* Set a couple of internal variables if appropriate. */ |
9b558729 | 1709 | if (last_examine_value != nullptr) |
c906108c SS |
1710 | { |
1711 | /* Make last address examined available to the user as $_. Use | |
c5aa993b | 1712 | the correct pointer type. */ |
4478b372 | 1713 | struct type *pointer_type |
9b558729 | 1714 | = lookup_pointer_type (value_type (last_examine_value.get ())); |
c906108c | 1715 | set_internalvar (lookup_internalvar ("_"), |
4478b372 JB |
1716 | value_from_pointer (pointer_type, |
1717 | last_examine_address)); | |
c5aa993b | 1718 | |
675dcf4f MK |
1719 | /* Make contents of last address examined available to the user |
1720 | as $__. If the last value has not been fetched from memory | |
1721 | then don't fetch it now; instead mark it by voiding the $__ | |
1722 | variable. */ | |
9b558729 | 1723 | if (value_lazy (last_examine_value.get ())) |
4fa62494 | 1724 | clear_internalvar (lookup_internalvar ("__")); |
c906108c | 1725 | else |
9b558729 | 1726 | set_internalvar (lookup_internalvar ("__"), last_examine_value.get ()); |
c906108c SS |
1727 | } |
1728 | } | |
c906108c | 1729 | \f |
c5aa993b | 1730 | |
c906108c SS |
1731 | /* Add an expression to the auto-display chain. |
1732 | Specify the expression. */ | |
1733 | ||
1734 | static void | |
0b39b52e | 1735 | display_command (const char *arg, int from_tty) |
c906108c SS |
1736 | { |
1737 | struct format_data fmt; | |
fe978cb0 | 1738 | struct display *newobj; |
6f937416 | 1739 | const char *exp = arg; |
c906108c | 1740 | |
7bd0be3a | 1741 | if (exp == 0) |
c906108c | 1742 | { |
7bd0be3a AB |
1743 | do_displays (); |
1744 | return; | |
1745 | } | |
c906108c | 1746 | |
7bd0be3a AB |
1747 | if (*exp == '/') |
1748 | { | |
1749 | exp++; | |
1750 | fmt = decode_format (&exp, 0, 0); | |
1751 | if (fmt.size && fmt.format == 0) | |
1752 | fmt.format = 'x'; | |
1753 | if (fmt.format == 'i' || fmt.format == 's') | |
1754 | fmt.size = 'b'; | |
1755 | } | |
1756 | else | |
1757 | { | |
1758 | fmt.format = 0; | |
1759 | fmt.size = 0; | |
1760 | fmt.count = 0; | |
1761 | fmt.raw = 0; | |
1762 | } | |
c906108c | 1763 | |
699bd4cf TT |
1764 | innermost_block_tracker tracker; |
1765 | expression_up expr = parse_expression (exp, &tracker); | |
c906108c | 1766 | |
4d01a485 | 1767 | newobj = new display (); |
c906108c | 1768 | |
7bd0be3a | 1769 | newobj->exp_string = xstrdup (exp); |
b22e99fd | 1770 | newobj->exp = std::move (expr); |
699bd4cf | 1771 | newobj->block = tracker.block (); |
7bd0be3a | 1772 | newobj->pspace = current_program_space; |
7bd0be3a AB |
1773 | newobj->number = ++display_number; |
1774 | newobj->format = fmt; | |
1775 | newobj->enabled_p = 1; | |
62147a22 PA |
1776 | newobj->next = NULL; |
1777 | ||
1778 | if (display_chain == NULL) | |
1779 | display_chain = newobj; | |
1780 | else | |
1781 | { | |
1782 | struct display *last; | |
1783 | ||
1784 | for (last = display_chain; last->next != NULL; last = last->next) | |
1785 | ; | |
1786 | last->next = newobj; | |
1787 | } | |
c906108c | 1788 | |
7bd0be3a AB |
1789 | if (from_tty) |
1790 | do_one_display (newobj); | |
c906108c | 1791 | |
7bd0be3a | 1792 | dont_repeat (); |
c906108c SS |
1793 | } |
1794 | ||
1795 | static void | |
fba45db2 | 1796 | free_display (struct display *d) |
c906108c | 1797 | { |
fa8a61dc | 1798 | xfree (d->exp_string); |
4d01a485 | 1799 | delete d; |
c906108c SS |
1800 | } |
1801 | ||
675dcf4f MK |
1802 | /* Clear out the display_chain. Done when new symtabs are loaded, |
1803 | since this invalidates the types stored in many expressions. */ | |
c906108c SS |
1804 | |
1805 | void | |
fba45db2 | 1806 | clear_displays (void) |
c906108c | 1807 | { |
52f0bd74 | 1808 | struct display *d; |
c906108c SS |
1809 | |
1810 | while ((d = display_chain) != NULL) | |
1811 | { | |
c906108c | 1812 | display_chain = d->next; |
fa8a61dc | 1813 | free_display (d); |
c906108c SS |
1814 | } |
1815 | } | |
1816 | ||
3c3fe74c | 1817 | /* Delete the auto-display DISPLAY. */ |
c906108c SS |
1818 | |
1819 | static void | |
3c3fe74c | 1820 | delete_display (struct display *display) |
c906108c | 1821 | { |
3c3fe74c | 1822 | struct display *d; |
c906108c | 1823 | |
3c3fe74c | 1824 | gdb_assert (display != NULL); |
c906108c | 1825 | |
3c3fe74c PA |
1826 | if (display_chain == display) |
1827 | display_chain = display->next; | |
1828 | ||
1829 | ALL_DISPLAYS (d) | |
1830 | if (d->next == display) | |
c906108c | 1831 | { |
3c3fe74c PA |
1832 | d->next = display->next; |
1833 | break; | |
c906108c | 1834 | } |
3c3fe74c PA |
1835 | |
1836 | free_display (display); | |
c906108c SS |
1837 | } |
1838 | ||
c9174737 PA |
1839 | /* Call FUNCTION on each of the displays whose numbers are given in |
1840 | ARGS. DATA is passed unmodified to FUNCTION. */ | |
c906108c SS |
1841 | |
1842 | static void | |
77763700 | 1843 | map_display_numbers (const char *args, |
c9174737 PA |
1844 | void (*function) (struct display *, |
1845 | void *), | |
1846 | void *data) | |
c906108c | 1847 | { |
c9174737 | 1848 | int num; |
c906108c | 1849 | |
c9174737 PA |
1850 | if (args == NULL) |
1851 | error_no_arg (_("one or more display numbers")); | |
c906108c | 1852 | |
bfd28288 | 1853 | number_or_range_parser parser (args); |
c9174737 | 1854 | |
bfd28288 | 1855 | while (!parser.finished ()) |
c906108c | 1856 | { |
bfd28288 | 1857 | const char *p = parser.cur_tok (); |
c906108c | 1858 | |
bfd28288 | 1859 | num = parser.get_number (); |
3c3fe74c PA |
1860 | if (num == 0) |
1861 | warning (_("bad display number at or near '%s'"), p); | |
1862 | else | |
1863 | { | |
c9174737 | 1864 | struct display *d, *tmp; |
c906108c | 1865 | |
c9174737 | 1866 | ALL_DISPLAYS_SAFE (d, tmp) |
3c3fe74c PA |
1867 | if (d->number == num) |
1868 | break; | |
1869 | if (d == NULL) | |
1870 | printf_unfiltered (_("No display number %d.\n"), num); | |
1871 | else | |
c9174737 | 1872 | function (d, data); |
3c3fe74c | 1873 | } |
c906108c | 1874 | } |
c9174737 PA |
1875 | } |
1876 | ||
1877 | /* Callback for map_display_numbers, that deletes a display. */ | |
1878 | ||
1879 | static void | |
1880 | do_delete_display (struct display *d, void *data) | |
1881 | { | |
1882 | delete_display (d); | |
1883 | } | |
1884 | ||
1885 | /* "undisplay" command. */ | |
1886 | ||
1887 | static void | |
77763700 | 1888 | undisplay_command (const char *args, int from_tty) |
c9174737 | 1889 | { |
c9174737 PA |
1890 | if (args == NULL) |
1891 | { | |
1892 | if (query (_("Delete all auto-display expressions? "))) | |
1893 | clear_displays (); | |
1894 | dont_repeat (); | |
1895 | return; | |
1896 | } | |
1897 | ||
1898 | map_display_numbers (args, do_delete_display, NULL); | |
c906108c SS |
1899 | dont_repeat (); |
1900 | } | |
1901 | ||
1902 | /* Display a single auto-display. | |
1903 | Do nothing if the display cannot be printed in the current context, | |
0df8b418 | 1904 | or if the display is disabled. */ |
c906108c SS |
1905 | |
1906 | static void | |
fba45db2 | 1907 | do_one_display (struct display *d) |
c906108c SS |
1908 | { |
1909 | int within_current_scope; | |
1910 | ||
b5de0fa7 | 1911 | if (d->enabled_p == 0) |
c906108c SS |
1912 | return; |
1913 | ||
704e9165 UW |
1914 | /* The expression carries the architecture that was used at parse time. |
1915 | This is a problem if the expression depends on architecture features | |
1916 | (e.g. register numbers), and the current architecture is now different. | |
1917 | For example, a display statement like "display/i $pc" is expected to | |
1918 | display the PC register of the current architecture, not the arch at | |
1919 | the time the display command was given. Therefore, we re-parse the | |
1920 | expression if the current architecture has changed. */ | |
1921 | if (d->exp != NULL && d->exp->gdbarch != get_current_arch ()) | |
1922 | { | |
4d01a485 | 1923 | d->exp.reset (); |
704e9165 UW |
1924 | d->block = NULL; |
1925 | } | |
1926 | ||
a3247a22 PP |
1927 | if (d->exp == NULL) |
1928 | { | |
ad3bbd48 | 1929 | |
a70b8144 | 1930 | try |
a3247a22 | 1931 | { |
699bd4cf TT |
1932 | innermost_block_tracker tracker; |
1933 | d->exp = parse_expression (d->exp_string, &tracker); | |
1934 | d->block = tracker.block (); | |
a3247a22 | 1935 | } |
230d2906 | 1936 | catch (const gdb_exception &ex) |
a3247a22 PP |
1937 | { |
1938 | /* Can't re-parse the expression. Disable this display item. */ | |
1939 | d->enabled_p = 0; | |
1940 | warning (_("Unable to display \"%s\": %s"), | |
3d6e9d23 | 1941 | d->exp_string, ex.what ()); |
a3247a22 PP |
1942 | return; |
1943 | } | |
1944 | } | |
1945 | ||
c906108c | 1946 | if (d->block) |
6c95b8df PA |
1947 | { |
1948 | if (d->pspace == current_program_space) | |
f21c2bd7 TT |
1949 | within_current_scope = contained_in (get_selected_block (0), d->block, |
1950 | true); | |
6c95b8df PA |
1951 | else |
1952 | within_current_scope = 0; | |
1953 | } | |
c906108c SS |
1954 | else |
1955 | within_current_scope = 1; | |
1956 | if (!within_current_scope) | |
1957 | return; | |
1958 | ||
b7b633e9 TT |
1959 | scoped_restore save_display_number |
1960 | = make_scoped_restore (¤t_display_number, d->number); | |
c906108c SS |
1961 | |
1962 | annotate_display_begin (); | |
1963 | printf_filtered ("%d", d->number); | |
1964 | annotate_display_number_end (); | |
1965 | printf_filtered (": "); | |
1966 | if (d->format.size) | |
1967 | { | |
c906108c SS |
1968 | |
1969 | annotate_display_format (); | |
1970 | ||
1971 | printf_filtered ("x/"); | |
1972 | if (d->format.count != 1) | |
1973 | printf_filtered ("%d", d->format.count); | |
1974 | printf_filtered ("%c", d->format.format); | |
1975 | if (d->format.format != 'i' && d->format.format != 's') | |
1976 | printf_filtered ("%c", d->format.size); | |
1977 | printf_filtered (" "); | |
1978 | ||
1979 | annotate_display_expression (); | |
1980 | ||
fa8a61dc | 1981 | puts_filtered (d->exp_string); |
c906108c SS |
1982 | annotate_display_expression_end (); |
1983 | ||
6a2eb474 | 1984 | if (d->format.count != 1 || d->format.format == 'i') |
c906108c SS |
1985 | printf_filtered ("\n"); |
1986 | else | |
1987 | printf_filtered (" "); | |
c5aa993b | 1988 | |
c906108c SS |
1989 | annotate_display_value (); |
1990 | ||
a70b8144 | 1991 | try |
9d8fa392 PA |
1992 | { |
1993 | struct value *val; | |
1994 | CORE_ADDR addr; | |
1995 | ||
4d01a485 | 1996 | val = evaluate_expression (d->exp.get ()); |
9d8fa392 PA |
1997 | addr = value_as_address (val); |
1998 | if (d->format.format == 'i') | |
1999 | addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr); | |
2000 | do_examine (d->format, d->exp->gdbarch, addr); | |
2001 | } | |
230d2906 | 2002 | catch (const gdb_exception_error &ex) |
492d29ea | 2003 | { |
3d6e9d23 TT |
2004 | fprintf_filtered (gdb_stdout, _("<error: %s>\n"), |
2005 | ex.what ()); | |
492d29ea | 2006 | } |
c906108c SS |
2007 | } |
2008 | else | |
2009 | { | |
79a45b7d TT |
2010 | struct value_print_options opts; |
2011 | ||
c906108c SS |
2012 | annotate_display_format (); |
2013 | ||
2014 | if (d->format.format) | |
2015 | printf_filtered ("/%c ", d->format.format); | |
2016 | ||
2017 | annotate_display_expression (); | |
2018 | ||
fa8a61dc | 2019 | puts_filtered (d->exp_string); |
c906108c SS |
2020 | annotate_display_expression_end (); |
2021 | ||
2022 | printf_filtered (" = "); | |
2023 | ||
2024 | annotate_display_expression (); | |
2025 | ||
79a45b7d | 2026 | get_formatted_print_options (&opts, d->format.format); |
a6bac58e | 2027 | opts.raw = d->format.raw; |
9d8fa392 | 2028 | |
a70b8144 | 2029 | try |
9d8fa392 PA |
2030 | { |
2031 | struct value *val; | |
2032 | ||
4d01a485 | 2033 | val = evaluate_expression (d->exp.get ()); |
9d8fa392 PA |
2034 | print_formatted (val, d->format.size, &opts, gdb_stdout); |
2035 | } | |
230d2906 | 2036 | catch (const gdb_exception_error &ex) |
492d29ea | 2037 | { |
3d6e9d23 | 2038 | fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.what ()); |
492d29ea | 2039 | } |
492d29ea | 2040 | |
c906108c SS |
2041 | printf_filtered ("\n"); |
2042 | } | |
2043 | ||
2044 | annotate_display_end (); | |
2045 | ||
2046 | gdb_flush (gdb_stdout); | |
c906108c SS |
2047 | } |
2048 | ||
2049 | /* Display all of the values on the auto-display chain which can be | |
2050 | evaluated in the current scope. */ | |
2051 | ||
2052 | void | |
fba45db2 | 2053 | do_displays (void) |
c906108c | 2054 | { |
52f0bd74 | 2055 | struct display *d; |
c906108c SS |
2056 | |
2057 | for (d = display_chain; d; d = d->next) | |
2058 | do_one_display (d); | |
2059 | } | |
2060 | ||
2061 | /* Delete the auto-display which we were in the process of displaying. | |
2062 | This is done when there is an error or a signal. */ | |
2063 | ||
2064 | void | |
fba45db2 | 2065 | disable_display (int num) |
c906108c | 2066 | { |
52f0bd74 | 2067 | struct display *d; |
c906108c SS |
2068 | |
2069 | for (d = display_chain; d; d = d->next) | |
2070 | if (d->number == num) | |
2071 | { | |
b5de0fa7 | 2072 | d->enabled_p = 0; |
c906108c SS |
2073 | return; |
2074 | } | |
a3f17187 | 2075 | printf_unfiltered (_("No display number %d.\n"), num); |
c906108c | 2076 | } |
c5aa993b | 2077 | |
c906108c | 2078 | void |
fba45db2 | 2079 | disable_current_display (void) |
c906108c SS |
2080 | { |
2081 | if (current_display_number >= 0) | |
2082 | { | |
2083 | disable_display (current_display_number); | |
3e43a32a MS |
2084 | fprintf_unfiltered (gdb_stderr, |
2085 | _("Disabling display %d to " | |
2086 | "avoid infinite recursion.\n"), | |
c5aa993b | 2087 | current_display_number); |
c906108c SS |
2088 | } |
2089 | current_display_number = -1; | |
2090 | } | |
2091 | ||
2092 | static void | |
1d12d88f | 2093 | info_display_command (const char *ignore, int from_tty) |
c906108c | 2094 | { |
52f0bd74 | 2095 | struct display *d; |
c906108c SS |
2096 | |
2097 | if (!display_chain) | |
a3f17187 | 2098 | printf_unfiltered (_("There are no auto-display expressions now.\n")); |
c906108c | 2099 | else |
a3f17187 AC |
2100 | printf_filtered (_("Auto-display expressions now in effect:\n\ |
2101 | Num Enb Expression\n")); | |
c906108c SS |
2102 | |
2103 | for (d = display_chain; d; d = d->next) | |
2104 | { | |
b5de0fa7 | 2105 | printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]); |
c906108c SS |
2106 | if (d->format.size) |
2107 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
c5aa993b | 2108 | d->format.format); |
c906108c SS |
2109 | else if (d->format.format) |
2110 | printf_filtered ("/%c ", d->format.format); | |
fa8a61dc | 2111 | puts_filtered (d->exp_string); |
f21c2bd7 | 2112 | if (d->block && !contained_in (get_selected_block (0), d->block, true)) |
a3f17187 | 2113 | printf_filtered (_(" (cannot be evaluated in the current context)")); |
c906108c | 2114 | printf_filtered ("\n"); |
c906108c SS |
2115 | } |
2116 | } | |
2117 | ||
c9174737 PA |
2118 | /* Callback fo map_display_numbers, that enables or disables the |
2119 | passed in display D. */ | |
2120 | ||
c906108c | 2121 | static void |
c9174737 | 2122 | do_enable_disable_display (struct display *d, void *data) |
c906108c | 2123 | { |
c9174737 PA |
2124 | d->enabled_p = *(int *) data; |
2125 | } | |
c906108c | 2126 | |
c9174737 PA |
2127 | /* Implamentation of both the "disable display" and "enable display" |
2128 | commands. ENABLE decides what to do. */ | |
2129 | ||
2130 | static void | |
77763700 | 2131 | enable_disable_display_command (const char *args, int from_tty, int enable) |
c9174737 PA |
2132 | { |
2133 | if (args == NULL) | |
c906108c | 2134 | { |
c9174737 | 2135 | struct display *d; |
c5aa993b | 2136 | |
c9174737 PA |
2137 | ALL_DISPLAYS (d) |
2138 | d->enabled_p = enable; | |
2139 | return; | |
2140 | } | |
c5aa993b | 2141 | |
c9174737 | 2142 | map_display_numbers (args, do_enable_disable_display, &enable); |
c906108c SS |
2143 | } |
2144 | ||
c9174737 PA |
2145 | /* The "enable display" command. */ |
2146 | ||
c906108c | 2147 | static void |
77763700 | 2148 | enable_display_command (const char *args, int from_tty) |
c906108c | 2149 | { |
c9174737 PA |
2150 | enable_disable_display_command (args, from_tty, 1); |
2151 | } | |
c5aa993b | 2152 | |
c9174737 | 2153 | /* The "disable display" command. */ |
c906108c | 2154 | |
c9174737 | 2155 | static void |
77763700 | 2156 | disable_display_command (const char *args, int from_tty) |
c9174737 PA |
2157 | { |
2158 | enable_disable_display_command (args, from_tty, 0); | |
c906108c | 2159 | } |
a3247a22 | 2160 | |
a3247a22 PP |
2161 | /* display_chain items point to blocks and expressions. Some expressions in |
2162 | turn may point to symbols. | |
2163 | Both symbols and blocks are obstack_alloc'd on objfile_stack, and are | |
2164 | obstack_free'd when a shared library is unloaded. | |
2165 | Clear pointers that are about to become dangling. | |
2166 | Both .exp and .block fields will be restored next time we need to display | |
2167 | an item by re-parsing .exp_string field in the new execution context. */ | |
2168 | ||
2169 | static void | |
63644780 | 2170 | clear_dangling_display_expressions (struct objfile *objfile) |
a3247a22 PP |
2171 | { |
2172 | struct display *d; | |
63644780 | 2173 | struct program_space *pspace; |
a3247a22 | 2174 | |
c0201579 JK |
2175 | /* With no symbol file we cannot have a block or expression from it. */ |
2176 | if (objfile == NULL) | |
2177 | return; | |
63644780 | 2178 | pspace = objfile->pspace; |
c0201579 | 2179 | if (objfile->separate_debug_objfile_backlink) |
63644780 NB |
2180 | { |
2181 | objfile = objfile->separate_debug_objfile_backlink; | |
2182 | gdb_assert (objfile->pspace == pspace); | |
2183 | } | |
c0201579 JK |
2184 | |
2185 | for (d = display_chain; d != NULL; d = d->next) | |
a3247a22 | 2186 | { |
63644780 | 2187 | if (d->pspace != pspace) |
c0201579 JK |
2188 | continue; |
2189 | ||
2190 | if (lookup_objfile_from_block (d->block) == objfile | |
4d01a485 | 2191 | || (d->exp != NULL && exp_uses_objfile (d->exp.get (), objfile))) |
c0201579 | 2192 | { |
4d01a485 | 2193 | d->exp.reset (); |
c0201579 JK |
2194 | d->block = NULL; |
2195 | } | |
a3247a22 PP |
2196 | } |
2197 | } | |
c906108c | 2198 | \f |
c5aa993b | 2199 | |
675dcf4f | 2200 | /* Print the value in stack frame FRAME of a variable specified by a |
aad95b57 TT |
2201 | struct symbol. NAME is the name to print; if NULL then VAR's print |
2202 | name will be used. STREAM is the ui_file on which to print the | |
2203 | value. INDENT specifies the number of indent levels to print | |
8f043999 JK |
2204 | before printing the variable name. |
2205 | ||
2206 | This function invalidates FRAME. */ | |
c906108c SS |
2207 | |
2208 | void | |
aad95b57 TT |
2209 | print_variable_and_value (const char *name, struct symbol *var, |
2210 | struct frame_info *frame, | |
2211 | struct ui_file *stream, int indent) | |
c906108c | 2212 | { |
c906108c | 2213 | |
aad95b57 TT |
2214 | if (!name) |
2215 | name = SYMBOL_PRINT_NAME (var); | |
2216 | ||
80ae2043 TT |
2217 | fputs_filtered (n_spaces (2 * indent), stream); |
2218 | fputs_styled (name, variable_name_style.style (), stream); | |
2219 | fputs_filtered (" = ", stream); | |
2220 | ||
a70b8144 | 2221 | try |
0f6a939d PM |
2222 | { |
2223 | struct value *val; | |
2224 | struct value_print_options opts; | |
aad95b57 | 2225 | |
63e43d3a PMR |
2226 | /* READ_VAR_VALUE needs a block in order to deal with non-local |
2227 | references (i.e. to handle nested functions). In this context, we | |
2228 | print variables that are local to this frame, so we can avoid passing | |
2229 | a block to it. */ | |
2230 | val = read_var_value (var, NULL, frame); | |
0f6a939d | 2231 | get_user_print_options (&opts); |
3343315b | 2232 | opts.deref_ref = 1; |
0f6a939d | 2233 | common_val_print (val, stream, indent, &opts, current_language); |
8f043999 JK |
2234 | |
2235 | /* common_val_print invalidates FRAME when a pretty printer calls inferior | |
2236 | function. */ | |
2237 | frame = NULL; | |
0f6a939d | 2238 | } |
230d2906 | 2239 | catch (const gdb_exception_error &except) |
492d29ea | 2240 | { |
3d6e9d23 TT |
2241 | fprintf_filtered (stream, "<error reading variable %s (%s)>", name, |
2242 | except.what ()); | |
492d29ea | 2243 | } |
492d29ea | 2244 | |
aad95b57 | 2245 | fprintf_filtered (stream, "\n"); |
c906108c SS |
2246 | } |
2247 | ||
c2792f5a DE |
2248 | /* Subroutine of ui_printf to simplify it. |
2249 | Print VALUE to STREAM using FORMAT. | |
1f6f6e21 PW |
2250 | VALUE is a C-style string either on the target or |
2251 | in a GDB internal variable. */ | |
c2792f5a DE |
2252 | |
2253 | static void | |
2254 | printf_c_string (struct ui_file *stream, const char *format, | |
2255 | struct value *value) | |
2256 | { | |
1f6f6e21 | 2257 | const gdb_byte *str; |
c2792f5a | 2258 | |
1f6f6e21 PW |
2259 | if (VALUE_LVAL (value) == lval_internalvar |
2260 | && c_is_string_type_p (value_type (value))) | |
3ae9ce5d | 2261 | { |
1f6f6e21 | 2262 | size_t len = TYPE_LENGTH (value_type (value)); |
c2792f5a | 2263 | |
1f6f6e21 PW |
2264 | /* Copy the internal var value to TEM_STR and append a terminating null |
2265 | character. This protects against corrupted C-style strings that lack | |
2266 | the terminating null char. It also allows Ada-style strings (not | |
2267 | null terminated) to be printed without problems. */ | |
2268 | gdb_byte *tem_str = (gdb_byte *) alloca (len + 1); | |
c2792f5a | 2269 | |
1f6f6e21 PW |
2270 | memcpy (tem_str, value_contents (value), len); |
2271 | tem_str [len] = 0; | |
2272 | str = tem_str; | |
c2792f5a | 2273 | } |
1f6f6e21 PW |
2274 | else |
2275 | { | |
2276 | CORE_ADDR tem = value_as_address (value);; | |
2277 | ||
2278 | if (tem == 0) | |
2279 | { | |
2280 | DIAGNOSTIC_PUSH | |
2281 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
2282 | fprintf_filtered (stream, format, "(null)"); | |
2283 | DIAGNOSTIC_POP | |
2284 | return; | |
2285 | } | |
2286 | ||
2287 | /* This is a %s argument. Find the length of the string. */ | |
2288 | size_t len; | |
2289 | ||
2290 | for (len = 0;; len++) | |
2291 | { | |
2292 | gdb_byte c; | |
c2792f5a | 2293 | |
1f6f6e21 PW |
2294 | QUIT; |
2295 | read_memory (tem + len, &c, 1); | |
2296 | if (c == 0) | |
2297 | break; | |
2298 | } | |
2299 | ||
2300 | /* Copy the string contents into a string inside GDB. */ | |
2301 | gdb_byte *tem_str = (gdb_byte *) alloca (len + 1); | |
2302 | ||
2303 | if (len != 0) | |
2304 | read_memory (tem, tem_str, len); | |
2305 | tem_str[len] = 0; | |
2306 | str = tem_str; | |
2307 | } | |
c2792f5a | 2308 | |
af39b1c2 SM |
2309 | DIAGNOSTIC_PUSH |
2310 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2311 | fprintf_filtered (stream, format, (char *) str); |
af39b1c2 | 2312 | DIAGNOSTIC_POP |
c2792f5a DE |
2313 | } |
2314 | ||
2315 | /* Subroutine of ui_printf to simplify it. | |
2316 | Print VALUE to STREAM using FORMAT. | |
1f6f6e21 PW |
2317 | VALUE is a wide C-style string on the target or |
2318 | in a GDB internal variable. */ | |
c2792f5a DE |
2319 | |
2320 | static void | |
2321 | printf_wide_c_string (struct ui_file *stream, const char *format, | |
2322 | struct value *value) | |
2323 | { | |
1f6f6e21 PW |
2324 | const gdb_byte *str; |
2325 | size_t len; | |
c2792f5a | 2326 | struct gdbarch *gdbarch = get_type_arch (value_type (value)); |
c2792f5a DE |
2327 | struct type *wctype = lookup_typename (current_language, gdbarch, |
2328 | "wchar_t", NULL, 0); | |
2329 | int wcwidth = TYPE_LENGTH (wctype); | |
c2792f5a | 2330 | |
1f6f6e21 PW |
2331 | if (VALUE_LVAL (value) == lval_internalvar |
2332 | && c_is_string_type_p (value_type (value))) | |
3ae9ce5d | 2333 | { |
1f6f6e21 PW |
2334 | str = value_contents (value); |
2335 | len = TYPE_LENGTH (value_type (value)); | |
3ae9ce5d | 2336 | } |
1f6f6e21 | 2337 | else |
c2792f5a | 2338 | { |
1f6f6e21 | 2339 | CORE_ADDR tem = value_as_address (value); |
c2792f5a | 2340 | |
1f6f6e21 PW |
2341 | if (tem == 0) |
2342 | { | |
2343 | DIAGNOSTIC_PUSH | |
2344 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
2345 | fprintf_filtered (stream, format, "(null)"); | |
2346 | DIAGNOSTIC_POP | |
2347 | return; | |
2348 | } | |
2349 | ||
2350 | /* This is a %s argument. Find the length of the string. */ | |
2351 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
2352 | gdb_byte *buf = (gdb_byte *) alloca (wcwidth); | |
2353 | ||
2354 | for (len = 0;; len += wcwidth) | |
2355 | { | |
2356 | QUIT; | |
2357 | read_memory (tem + len, buf, wcwidth); | |
2358 | if (extract_unsigned_integer (buf, wcwidth, byte_order) == 0) | |
2359 | break; | |
2360 | } | |
2361 | ||
2362 | /* Copy the string contents into a string inside GDB. */ | |
2363 | gdb_byte *tem_str = (gdb_byte *) alloca (len + wcwidth); | |
2364 | ||
2365 | if (len != 0) | |
2366 | read_memory (tem, tem_str, len); | |
2367 | memset (&tem_str[len], 0, wcwidth); | |
2368 | str = tem_str; | |
2369 | } | |
c2792f5a | 2370 | |
8268c778 | 2371 | auto_obstack output; |
c2792f5a DE |
2372 | |
2373 | convert_between_encodings (target_wide_charset (gdbarch), | |
2374 | host_charset (), | |
1f6f6e21 | 2375 | str, len, wcwidth, |
c2792f5a DE |
2376 | &output, translit_char); |
2377 | obstack_grow_str0 (&output, ""); | |
2378 | ||
af39b1c2 SM |
2379 | DIAGNOSTIC_PUSH |
2380 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2381 | fprintf_filtered (stream, format, obstack_base (&output)); |
af39b1c2 | 2382 | DIAGNOSTIC_POP |
c2792f5a DE |
2383 | } |
2384 | ||
2385 | /* Subroutine of ui_printf to simplify it. | |
16e812b2 | 2386 | Print VALUE, a floating point value, to STREAM using FORMAT. */ |
c2792f5a DE |
2387 | |
2388 | static void | |
16e812b2 UW |
2389 | printf_floating (struct ui_file *stream, const char *format, |
2390 | struct value *value, enum argclass argclass) | |
c2792f5a | 2391 | { |
c2792f5a DE |
2392 | /* Parameter data. */ |
2393 | struct type *param_type = value_type (value); | |
2394 | struct gdbarch *gdbarch = get_type_arch (param_type); | |
c2792f5a | 2395 | |
16e812b2 UW |
2396 | /* Determine target type corresponding to the format string. */ |
2397 | struct type *fmt_type; | |
2398 | switch (argclass) | |
c2792f5a | 2399 | { |
16e812b2 UW |
2400 | case double_arg: |
2401 | fmt_type = builtin_type (gdbarch)->builtin_double; | |
2402 | break; | |
2403 | case long_double_arg: | |
2404 | fmt_type = builtin_type (gdbarch)->builtin_long_double; | |
2405 | break; | |
2406 | case dec32float_arg: | |
2407 | fmt_type = builtin_type (gdbarch)->builtin_decfloat; | |
2408 | break; | |
2409 | case dec64float_arg: | |
2410 | fmt_type = builtin_type (gdbarch)->builtin_decdouble; | |
2411 | break; | |
2412 | case dec128float_arg: | |
2413 | fmt_type = builtin_type (gdbarch)->builtin_declong; | |
2414 | break; | |
2415 | default: | |
2416 | gdb_assert_not_reached ("unexpected argument class"); | |
c2792f5a DE |
2417 | } |
2418 | ||
16e812b2 UW |
2419 | /* To match the traditional GDB behavior, the conversion is |
2420 | done differently depending on the type of the parameter: | |
2421 | ||
2422 | - if the parameter has floating-point type, it's value | |
2423 | is converted to the target type; | |
2424 | ||
2425 | - otherwise, if the parameter has a type that is of the | |
2426 | same size as a built-in floating-point type, the value | |
2427 | bytes are interpreted as if they were of that type, and | |
2428 | then converted to the target type (this is not done for | |
2429 | decimal floating-point argument classes); | |
2430 | ||
2431 | - otherwise, if the source value has an integer value, | |
2432 | it's value is converted to the target type; | |
c2792f5a | 2433 | |
16e812b2 | 2434 | - otherwise, an error is raised. |
c2792f5a | 2435 | |
16e812b2 UW |
2436 | In either case, the result of the conversion is a byte buffer |
2437 | formatted in the target format for the target type. */ | |
2438 | ||
2439 | if (TYPE_CODE (fmt_type) == TYPE_CODE_FLT) | |
2440 | { | |
2441 | param_type = float_type_from_length (param_type); | |
2442 | if (param_type != value_type (value)) | |
2443 | value = value_from_contents (param_type, value_contents (value)); | |
2444 | } | |
2445 | ||
2446 | value = value_cast (fmt_type, value); | |
c2792f5a | 2447 | |
3b4b2f16 | 2448 | /* Convert the value to a string and print it. */ |
f69fdf9b UW |
2449 | std::string str |
2450 | = target_float_to_string (value_contents (value), fmt_type, format); | |
3b4b2f16 | 2451 | fputs_filtered (str.c_str (), stream); |
c2792f5a DE |
2452 | } |
2453 | ||
2454 | /* Subroutine of ui_printf to simplify it. | |
2455 | Print VALUE, a target pointer, to STREAM using FORMAT. */ | |
2456 | ||
2457 | static void | |
2458 | printf_pointer (struct ui_file *stream, const char *format, | |
2459 | struct value *value) | |
2460 | { | |
2461 | /* We avoid the host's %p because pointers are too | |
2462 | likely to be the wrong size. The only interesting | |
2463 | modifier for %p is a width; extract that, and then | |
2464 | handle %p as glibc would: %#x or a literal "(nil)". */ | |
2465 | ||
2466 | const char *p; | |
2467 | char *fmt, *fmt_p; | |
2468 | #ifdef PRINTF_HAS_LONG_LONG | |
2469 | long long val = value_as_long (value); | |
2470 | #else | |
2471 | long val = value_as_long (value); | |
2472 | #endif | |
2473 | ||
224c3ddb | 2474 | fmt = (char *) alloca (strlen (format) + 5); |
c2792f5a DE |
2475 | |
2476 | /* Copy up to the leading %. */ | |
2477 | p = format; | |
2478 | fmt_p = fmt; | |
2479 | while (*p) | |
2480 | { | |
2481 | int is_percent = (*p == '%'); | |
2482 | ||
2483 | *fmt_p++ = *p++; | |
2484 | if (is_percent) | |
2485 | { | |
2486 | if (*p == '%') | |
2487 | *fmt_p++ = *p++; | |
2488 | else | |
2489 | break; | |
2490 | } | |
2491 | } | |
2492 | ||
2493 | if (val != 0) | |
2494 | *fmt_p++ = '#'; | |
2495 | ||
b8c2339b TT |
2496 | /* Copy any width or flags. Only the "-" flag is valid for pointers |
2497 | -- see the format_pieces constructor. */ | |
2498 | while (*p == '-' || (*p >= '0' && *p < '9')) | |
c2792f5a DE |
2499 | *fmt_p++ = *p++; |
2500 | ||
2501 | gdb_assert (*p == 'p' && *(p + 1) == '\0'); | |
2502 | if (val != 0) | |
2503 | { | |
2504 | #ifdef PRINTF_HAS_LONG_LONG | |
2505 | *fmt_p++ = 'l'; | |
2506 | #endif | |
2507 | *fmt_p++ = 'l'; | |
2508 | *fmt_p++ = 'x'; | |
2509 | *fmt_p++ = '\0'; | |
af39b1c2 SM |
2510 | DIAGNOSTIC_PUSH |
2511 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2512 | fprintf_filtered (stream, fmt, val); |
af39b1c2 | 2513 | DIAGNOSTIC_POP |
c2792f5a DE |
2514 | } |
2515 | else | |
2516 | { | |
2517 | *fmt_p++ = 's'; | |
2518 | *fmt_p++ = '\0'; | |
af39b1c2 SM |
2519 | DIAGNOSTIC_PUSH |
2520 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2521 | fprintf_filtered (stream, fmt, "(nil)"); |
af39b1c2 | 2522 | DIAGNOSTIC_POP |
c2792f5a DE |
2523 | } |
2524 | } | |
2525 | ||
a04b0428 JB |
2526 | /* printf "printf format string" ARG to STREAM. */ |
2527 | ||
2528 | static void | |
bbc13ae3 | 2529 | ui_printf (const char *arg, struct ui_file *stream) |
c906108c | 2530 | { |
bbc13ae3 | 2531 | const char *s = arg; |
8e481c3b | 2532 | std::vector<struct value *> val_args; |
c906108c SS |
2533 | |
2534 | if (s == 0) | |
e2e0b3e5 | 2535 | error_no_arg (_("format-control string and values to print")); |
c906108c | 2536 | |
f1735a53 | 2537 | s = skip_spaces (s); |
c906108c | 2538 | |
675dcf4f | 2539 | /* A format string should follow, enveloped in double quotes. */ |
c906108c | 2540 | if (*s++ != '"') |
8a3fe4f8 | 2541 | error (_("Bad format string, missing '\"'.")); |
c906108c | 2542 | |
8e481c3b | 2543 | format_pieces fpieces (&s); |
c906108c | 2544 | |
d3ce09f5 SS |
2545 | if (*s++ != '"') |
2546 | error (_("Bad format string, non-terminated '\"'.")); | |
2547 | ||
f1735a53 | 2548 | s = skip_spaces (s); |
c906108c SS |
2549 | |
2550 | if (*s != ',' && *s != 0) | |
8a3fe4f8 | 2551 | error (_("Invalid argument syntax")); |
c906108c | 2552 | |
c5aa993b JM |
2553 | if (*s == ',') |
2554 | s++; | |
f1735a53 | 2555 | s = skip_spaces (s); |
c906108c | 2556 | |
c906108c | 2557 | { |
c906108c | 2558 | int nargs_wanted; |
8e481c3b TT |
2559 | int i; |
2560 | const char *current_substring; | |
c906108c | 2561 | |
c906108c | 2562 | nargs_wanted = 0; |
8e481c3b TT |
2563 | for (auto &&piece : fpieces) |
2564 | if (piece.argclass != literal_piece) | |
d3ce09f5 | 2565 | ++nargs_wanted; |
c906108c SS |
2566 | |
2567 | /* Now, parse all arguments and evaluate them. | |
2568 | Store the VALUEs in VAL_ARGS. */ | |
2569 | ||
2570 | while (*s != '\0') | |
2571 | { | |
bbc13ae3 | 2572 | const char *s1; |
ad3bbd48 | 2573 | |
a04b0428 | 2574 | s1 = s; |
8e481c3b | 2575 | val_args.push_back (parse_to_comma_and_eval (&s1)); |
c5aa993b | 2576 | |
c906108c SS |
2577 | s = s1; |
2578 | if (*s == ',') | |
2579 | s++; | |
2580 | } | |
c5aa993b | 2581 | |
8e481c3b | 2582 | if (val_args.size () != nargs_wanted) |
8a3fe4f8 | 2583 | error (_("Wrong number of arguments for specified format-string")); |
c906108c SS |
2584 | |
2585 | /* Now actually print them. */ | |
d3ce09f5 | 2586 | i = 0; |
8e481c3b | 2587 | for (auto &&piece : fpieces) |
c906108c | 2588 | { |
8e481c3b TT |
2589 | current_substring = piece.string; |
2590 | switch (piece.argclass) | |
c906108c SS |
2591 | { |
2592 | case string_arg: | |
c2792f5a | 2593 | printf_c_string (stream, current_substring, val_args[i]); |
c906108c | 2594 | break; |
6c7a06a3 | 2595 | case wide_string_arg: |
c2792f5a | 2596 | printf_wide_c_string (stream, current_substring, val_args[i]); |
6c7a06a3 TT |
2597 | break; |
2598 | case wide_char_arg: | |
2599 | { | |
50810684 UW |
2600 | struct gdbarch *gdbarch |
2601 | = get_type_arch (value_type (val_args[i])); | |
2602 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
e6c014f2 | 2603 | "wchar_t", NULL, 0); |
6c7a06a3 | 2604 | struct type *valtype; |
6c7a06a3 TT |
2605 | const gdb_byte *bytes; |
2606 | ||
2607 | valtype = value_type (val_args[i]); | |
2608 | if (TYPE_LENGTH (valtype) != TYPE_LENGTH (wctype) | |
2609 | || TYPE_CODE (valtype) != TYPE_CODE_INT) | |
2610 | error (_("expected wchar_t argument for %%lc")); | |
2611 | ||
2612 | bytes = value_contents (val_args[i]); | |
2613 | ||
8268c778 | 2614 | auto_obstack output; |
6c7a06a3 | 2615 | |
f870a310 | 2616 | convert_between_encodings (target_wide_charset (gdbarch), |
6c7a06a3 TT |
2617 | host_charset (), |
2618 | bytes, TYPE_LENGTH (valtype), | |
2619 | TYPE_LENGTH (valtype), | |
2620 | &output, translit_char); | |
2621 | obstack_grow_str0 (&output, ""); | |
2622 | ||
af39b1c2 SM |
2623 | DIAGNOSTIC_PUSH |
2624 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 HZ |
2625 | fprintf_filtered (stream, current_substring, |
2626 | obstack_base (&output)); | |
af39b1c2 | 2627 | DIAGNOSTIC_POP |
6c7a06a3 TT |
2628 | } |
2629 | break; | |
c906108c | 2630 | case long_long_arg: |
74a0d9f6 | 2631 | #ifdef PRINTF_HAS_LONG_LONG |
c906108c SS |
2632 | { |
2633 | long long val = value_as_long (val_args[i]); | |
ad3bbd48 | 2634 | |
af39b1c2 SM |
2635 | DIAGNOSTIC_PUSH |
2636 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2637 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2638 | DIAGNOSTIC_POP |
c906108c SS |
2639 | break; |
2640 | } | |
2641 | #else | |
8a3fe4f8 | 2642 | error (_("long long not supported in printf")); |
c906108c SS |
2643 | #endif |
2644 | case int_arg: | |
2645 | { | |
46e9880c | 2646 | int val = value_as_long (val_args[i]); |
ad3bbd48 | 2647 | |
af39b1c2 SM |
2648 | DIAGNOSTIC_PUSH |
2649 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2650 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2651 | DIAGNOSTIC_POP |
46e9880c DJ |
2652 | break; |
2653 | } | |
2654 | case long_arg: | |
2655 | { | |
c906108c | 2656 | long val = value_as_long (val_args[i]); |
ad3bbd48 | 2657 | |
af39b1c2 SM |
2658 | DIAGNOSTIC_PUSH |
2659 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2660 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2661 | DIAGNOSTIC_POP |
c906108c SS |
2662 | break; |
2663 | } | |
16e812b2 UW |
2664 | /* Handles floating-point values. */ |
2665 | case double_arg: | |
2666 | case long_double_arg: | |
2667 | case dec32float_arg: | |
2668 | case dec64float_arg: | |
2669 | case dec128float_arg: | |
2670 | printf_floating (stream, current_substring, val_args[i], | |
8e481c3b | 2671 | piece.argclass); |
c2792f5a | 2672 | break; |
2025a643 | 2673 | case ptr_arg: |
c2792f5a DE |
2674 | printf_pointer (stream, current_substring, val_args[i]); |
2675 | break; | |
d3ce09f5 SS |
2676 | case literal_piece: |
2677 | /* Print a portion of the format string that has no | |
2678 | directives. Note that this will not include any | |
2679 | ordinary %-specs, but it might include "%%". That is | |
2680 | why we use printf_filtered and not puts_filtered here. | |
2681 | Also, we pass a dummy argument because some platforms | |
2682 | have modified GCC to include -Wformat-security by | |
2683 | default, which will warn here if there is no | |
2684 | argument. */ | |
af39b1c2 SM |
2685 | DIAGNOSTIC_PUSH |
2686 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
d3ce09f5 | 2687 | fprintf_filtered (stream, current_substring, 0); |
af39b1c2 | 2688 | DIAGNOSTIC_POP |
d3ce09f5 | 2689 | break; |
675dcf4f MK |
2690 | default: |
2691 | internal_error (__FILE__, __LINE__, | |
2025a643 | 2692 | _("failed internal consistency check")); |
c906108c | 2693 | } |
d3ce09f5 | 2694 | /* Maybe advance to the next argument. */ |
8e481c3b | 2695 | if (piece.argclass != literal_piece) |
d3ce09f5 | 2696 | ++i; |
c906108c | 2697 | } |
c906108c | 2698 | } |
c906108c | 2699 | } |
c906108c | 2700 | |
f1421989 HZ |
2701 | /* Implement the "printf" command. */ |
2702 | ||
a04b0428 | 2703 | static void |
0b39b52e | 2704 | printf_command (const char *arg, int from_tty) |
f1421989 | 2705 | { |
a04b0428 | 2706 | ui_printf (arg, gdb_stdout); |
ef1dfa36 TT |
2707 | reset_terminal_style (gdb_stdout); |
2708 | wrap_here (""); | |
50b34a18 | 2709 | gdb_flush (gdb_stdout); |
f1421989 HZ |
2710 | } |
2711 | ||
2712 | /* Implement the "eval" command. */ | |
2713 | ||
2714 | static void | |
0b39b52e | 2715 | eval_command (const char *arg, int from_tty) |
f1421989 | 2716 | { |
d7e74731 | 2717 | string_file stb; |
f1421989 | 2718 | |
d7e74731 | 2719 | ui_printf (arg, &stb); |
f1421989 | 2720 | |
d7e74731 | 2721 | std::string expanded = insert_user_defined_cmd_args (stb.c_str ()); |
01770bbd | 2722 | |
95a6b0a1 | 2723 | execute_command (expanded.c_str (), from_tty); |
f1421989 HZ |
2724 | } |
2725 | ||
c906108c | 2726 | void |
fba45db2 | 2727 | _initialize_printcmd (void) |
c906108c | 2728 | { |
c94fdfd0 EZ |
2729 | struct cmd_list_element *c; |
2730 | ||
c906108c SS |
2731 | current_display_number = -1; |
2732 | ||
76727919 | 2733 | gdb::observers::free_objfile.attach (clear_dangling_display_expressions); |
a3247a22 | 2734 | |
11db9430 | 2735 | add_info ("address", info_address_command, |
188e1fa9 TT |
2736 | _("Describe where symbol SYM is stored.\n\ |
2737 | Usage: info address SYM")); | |
c906108c | 2738 | |
11db9430 | 2739 | add_info ("symbol", info_symbol_command, _("\ |
1bedd215 | 2740 | Describe what symbol is at location ADDR.\n\ |
188e1fa9 | 2741 | Usage: info symbol ADDR\n\ |
1bedd215 | 2742 | Only for symbols with fixed locations (global or static scope).")); |
c906108c | 2743 | |
1bedd215 AC |
2744 | add_com ("x", class_vars, x_command, _("\ |
2745 | Examine memory: x/FMT ADDRESS.\n\ | |
c906108c SS |
2746 | ADDRESS is an expression for the memory address to examine.\n\ |
2747 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2748 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
6fbe845e AB |
2749 | t(binary), f(float), a(address), i(instruction), c(char), s(string)\n\ |
2750 | and z(hex, zero padded on the left).\n\ | |
1bedd215 | 2751 | Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ |
c906108c | 2752 | The specified number of objects of the specified size are printed\n\ |
bb556f1f TK |
2753 | according to the format. If a negative number is specified, memory is\n\ |
2754 | examined backward from the address.\n\n\ | |
c906108c SS |
2755 | Defaults for format and size letters are those previously used.\n\ |
2756 | Default count is 1. Default address is following last thing printed\n\ | |
1bedd215 | 2757 | with this command or \"print\".")); |
c906108c | 2758 | |
11db9430 | 2759 | add_info ("display", info_display_command, _("\ |
188e1fa9 TT |
2760 | Expressions to display when program stops, with code numbers.\n\ |
2761 | Usage: info display")); | |
c906108c | 2762 | |
1a966eab AC |
2763 | add_cmd ("undisplay", class_vars, undisplay_command, _("\ |
2764 | Cancel some expressions to be displayed when program stops.\n\ | |
188e1fa9 | 2765 | Usage: undisplay [NUM]...\n\ |
c906108c SS |
2766 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2767 | No argument means cancel all automatic-display expressions.\n\ | |
2768 | \"delete display\" has the same effect as this command.\n\ | |
1a966eab | 2769 | Do \"info display\" to see current list of code numbers."), |
c5aa993b | 2770 | &cmdlist); |
c906108c | 2771 | |
1bedd215 AC |
2772 | add_com ("display", class_vars, display_command, _("\ |
2773 | Print value of expression EXP each time the program stops.\n\ | |
188e1fa9 | 2774 | Usage: display[/FMT] EXP\n\ |
c906108c SS |
2775 | /FMT may be used before EXP as in the \"print\" command.\n\ |
2776 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2777 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2778 | and examining is done as in the \"x\" command.\n\n\ | |
2779 | With no argument, display all currently requested auto-display expressions.\n\ | |
1bedd215 | 2780 | Use \"undisplay\" to cancel display requests previously made.")); |
c906108c | 2781 | |
c9174737 | 2782 | add_cmd ("display", class_vars, enable_display_command, _("\ |
1a966eab | 2783 | Enable some expressions to be displayed when program stops.\n\ |
188e1fa9 | 2784 | Usage: enable display [NUM]...\n\ |
c906108c SS |
2785 | Arguments are the code numbers of the expressions to resume displaying.\n\ |
2786 | No argument means enable all automatic-display expressions.\n\ | |
1a966eab | 2787 | Do \"info display\" to see current list of code numbers."), &enablelist); |
c906108c | 2788 | |
1a966eab AC |
2789 | add_cmd ("display", class_vars, disable_display_command, _("\ |
2790 | Disable some expressions to be displayed when program stops.\n\ | |
188e1fa9 | 2791 | Usage: disable display [NUM]...\n\ |
c906108c SS |
2792 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2793 | No argument means disable all automatic-display expressions.\n\ | |
1a966eab | 2794 | Do \"info display\" to see current list of code numbers."), &disablelist); |
c906108c | 2795 | |
1a966eab AC |
2796 | add_cmd ("display", class_vars, undisplay_command, _("\ |
2797 | Cancel some expressions to be displayed when program stops.\n\ | |
188e1fa9 | 2798 | Usage: delete display [NUM]...\n\ |
c906108c SS |
2799 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2800 | No argument means cancel all automatic-display expressions.\n\ | |
1a966eab | 2801 | Do \"info display\" to see current list of code numbers."), &deletelist); |
c906108c | 2802 | |
1bedd215 | 2803 | add_com ("printf", class_vars, printf_command, _("\ |
80ae639d | 2804 | Formatted printing, like the C \"printf\" function.\n\ |
188e1fa9 | 2805 | Usage: printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ |
80ae639d | 2806 | This supports most C printf format specifications, like %s, %d, etc.")); |
c906108c | 2807 | |
1bedd215 AC |
2808 | add_com ("output", class_vars, output_command, _("\ |
2809 | Like \"print\" but don't put in value history and don't print newline.\n\ | |
188e1fa9 | 2810 | Usage: output EXP\n\ |
1bedd215 | 2811 | This is useful in user-defined commands.")); |
c906108c | 2812 | |
1bedd215 | 2813 | add_prefix_cmd ("set", class_vars, set_command, _("\ |
590042fc | 2814 | Evaluate expression EXP and assign result to variable VAR.\n\ |
188e1fa9 TT |
2815 | Usage: set VAR = EXP\n\ |
2816 | This uses assignment syntax appropriate for the current language\n\ | |
2817 | (VAR = EXP or VAR := EXP for example).\n\ | |
2818 | VAR may be a debugger \"convenience\" variable (names starting\n\ | |
c906108c | 2819 | with $), a register (a few standard names starting with $), or an actual\n\ |
1bedd215 AC |
2820 | variable in the program being debugged. EXP is any valid expression.\n\ |
2821 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
2822 | \n\ | |
2823 | With a subcommand, this command modifies parts of the gdb environment.\n\ | |
2824 | You can see these environment settings with the \"show\" command."), | |
c5aa993b | 2825 | &setlist, "set ", 1, &cmdlist); |
c906108c | 2826 | if (dbx_commands) |
0b39b52e | 2827 | add_com ("assign", class_vars, set_command, _("\ |
590042fc | 2828 | Evaluate expression EXP and assign result to variable VAR.\n\ |
188e1fa9 TT |
2829 | Usage: assign VAR = EXP\n\ |
2830 | This uses assignment syntax appropriate for the current language\n\ | |
2831 | (VAR = EXP or VAR := EXP for example).\n\ | |
2832 | VAR may be a debugger \"convenience\" variable (names starting\n\ | |
c906108c | 2833 | with $), a register (a few standard names starting with $), or an actual\n\ |
1bedd215 AC |
2834 | variable in the program being debugged. EXP is any valid expression.\n\ |
2835 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
c906108c | 2836 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
1bedd215 | 2837 | You can see these environment settings with the \"show\" command.")); |
c906108c | 2838 | |
0df8b418 | 2839 | /* "call" is the same as "set", but handy for dbx users to call fns. */ |
1bedd215 AC |
2840 | c = add_com ("call", class_vars, call_command, _("\ |
2841 | Call a function in the program.\n\ | |
188e1fa9 | 2842 | Usage: call EXP\n\ |
c906108c SS |
2843 | The argument is the function name and arguments, in the notation of the\n\ |
2844 | current working language. The result is printed and saved in the value\n\ | |
1bedd215 | 2845 | history, if it is not void.")); |
7d8062de | 2846 | set_cmd_completer_handle_brkchars (c, print_command_completer); |
c906108c | 2847 | |
1a966eab | 2848 | add_cmd ("variable", class_vars, set_command, _("\ |
590042fc | 2849 | Evaluate expression EXP and assign result to variable VAR.\n\ |
188e1fa9 TT |
2850 | Usage: set variable VAR = EXP\n\ |
2851 | This uses assignment syntax appropriate for the current language\n\ | |
2852 | (VAR = EXP or VAR := EXP for example).\n\ | |
2853 | VAR may be a debugger \"convenience\" variable (names starting\n\ | |
c906108c SS |
2854 | with $), a register (a few standard names starting with $), or an actual\n\ |
2855 | variable in the program being debugged. EXP is any valid expression.\n\ | |
1a966eab | 2856 | This may usually be abbreviated to simply \"set\"."), |
c5aa993b | 2857 | &setlist); |
3fcded8f | 2858 | add_alias_cmd ("var", "variable", class_vars, 0, &setlist); |
c906108c | 2859 | |
7d8062de PA |
2860 | const auto print_opts = make_value_print_options_def_group (nullptr); |
2861 | ||
8abfcabc | 2862 | static const std::string print_help = gdb::option::build_help (_("\ |
1bedd215 | 2863 | Print value of expression EXP.\n\ |
7d8062de PA |
2864 | Usage: print [[OPTION]... --] [/FMT] [EXP]\n\ |
2865 | \n\ | |
2866 | Options:\n\ | |
590042fc PW |
2867 | %OPTIONS%\n\ |
2868 | \n\ | |
7d8062de PA |
2869 | Note: because this command accepts arbitrary expressions, if you\n\ |
2870 | specify any command option, you must use a double dash (\"--\")\n\ | |
2871 | to mark the end of option processing. E.g.: \"print -o -- myobj\".\n\ | |
2872 | \n\ | |
c906108c SS |
2873 | Variables accessible are those of the lexical environment of the selected\n\ |
2874 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2875 | \n\ | |
2876 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2877 | $$NUM refers to NUM'th value back from the last one.\n\ | |
1bedd215 AC |
2878 | Names starting with $ refer to registers (with the values they would have\n\ |
2879 | if the program were to return to the stack frame now selected, restoring\n\ | |
c906108c SS |
2880 | all registers saved by frames farther in) or else to debugger\n\ |
2881 | \"convenience\" variables (any such name not a known register).\n\ | |
1bedd215 AC |
2882 | Use assignment expressions to give values to convenience variables.\n\ |
2883 | \n\ | |
c906108c SS |
2884 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ |
2885 | @ is a binary operator for treating consecutive data objects\n\ | |
2886 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2887 | element is FOO, whose second element is stored in the space following\n\ | |
2888 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
1bedd215 AC |
2889 | resides in memory.\n\ |
2890 | \n\ | |
c906108c | 2891 | EXP may be preceded with /FMT, where FMT is a format letter\n\ |
7d8062de PA |
2892 | but no count or size letter (see \"x\" command)."), |
2893 | print_opts); | |
2894 | ||
2895 | c = add_com ("print", class_vars, print_command, print_help.c_str ()); | |
2896 | set_cmd_completer_handle_brkchars (c, print_command_completer); | |
c906108c | 2897 | add_com_alias ("p", "print", class_vars, 1); |
e93a8774 | 2898 | add_com_alias ("inspect", "print", class_vars, 1); |
c906108c | 2899 | |
35096d9d AC |
2900 | add_setshow_uinteger_cmd ("max-symbolic-offset", no_class, |
2901 | &max_symbolic_offset, _("\ | |
188e1fa9 TT |
2902 | Set the largest offset that will be printed in <SYMBOL+1234> form."), _("\ |
2903 | Show the largest offset that will be printed in <SYMBOL+1234> form."), _("\ | |
f81d1120 PA |
2904 | Tell GDB to only display the symbolic form of an address if the\n\ |
2905 | offset between the closest earlier symbol and the address is less than\n\ | |
2906 | the specified maximum offset. The default is \"unlimited\", which tells GDB\n\ | |
2907 | to always print the symbolic form of an address if any symbol precedes\n\ | |
2908 | it. Zero is equivalent to \"unlimited\"."), | |
35096d9d | 2909 | NULL, |
920d2a44 | 2910 | show_max_symbolic_offset, |
35096d9d | 2911 | &setprintlist, &showprintlist); |
5bf193a2 AC |
2912 | add_setshow_boolean_cmd ("symbol-filename", no_class, |
2913 | &print_symbol_filename, _("\ | |
188e1fa9 TT |
2914 | Set printing of source filename and line number with <SYMBOL>."), _("\ |
2915 | Show printing of source filename and line number with <SYMBOL>."), NULL, | |
5bf193a2 | 2916 | NULL, |
920d2a44 | 2917 | show_print_symbol_filename, |
5bf193a2 | 2918 | &setprintlist, &showprintlist); |
f1421989 HZ |
2919 | |
2920 | add_com ("eval", no_class, eval_command, _("\ | |
188e1fa9 TT |
2921 | Construct a GDB command and then evaluate it.\n\ |
2922 | Usage: eval \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
2923 | Convert the arguments to a string as \"printf\" would, but then\n\ | |
2924 | treat this string as a command line, and evaluate it.")); | |
c906108c | 2925 | } |