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c906108c | 1 | /* Print values for GNU debugger GDB. |
e2ad119d | 2 | |
1d506c26 | 3 | Copyright (C) 1986-2024 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 | 19 | |
c906108c SS |
20 | #include "frame.h" |
21 | #include "symtab.h" | |
22 | #include "gdbtypes.h" | |
23 | #include "value.h" | |
24 | #include "language.h" | |
1f6f6e21 | 25 | #include "c-lang.h" |
c906108c SS |
26 | #include "expression.h" |
27 | #include "gdbcore.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "target.h" | |
30 | #include "breakpoint.h" | |
31 | #include "demangle.h" | |
50f182aa | 32 | #include "gdb-demangle.h" |
c906108c SS |
33 | #include "valprint.h" |
34 | #include "annotate.h" | |
ef0f16cc TT |
35 | #include "symfile.h" |
36 | #include "objfiles.h" | |
37 | #include "completer.h" | |
8b93c638 | 38 | #include "ui-out.h" |
fe898f56 | 39 | #include "block.h" |
92bf2b80 | 40 | #include "disasm.h" |
f69fdf9b | 41 | #include "target-float.h" |
76727919 | 42 | #include "observable.h" |
a3247a22 | 43 | #include "solist.h" |
a3247a22 | 44 | #include "parser-defs.h" |
6c7a06a3 | 45 | #include "charset.h" |
704e9165 | 46 | #include "arch-utils.h" |
e9cafbcc | 47 | #include "cli/cli-utils.h" |
7d8062de | 48 | #include "cli/cli-option.h" |
01770bbd | 49 | #include "cli/cli-script.h" |
80ae2043 | 50 | #include "cli/cli-style.h" |
268a13a5 | 51 | #include "gdbsupport/format.h" |
05cba821 | 52 | #include "source.h" |
268a13a5 | 53 | #include "gdbsupport/byte-vector.h" |
6b09f134 | 54 | #include <optional> |
e0f4b3ec | 55 | #include "gdbsupport/gdb-safe-ctype.h" |
48136e00 | 56 | #include "gdbsupport/rsp-low.h" |
99d9c3b9 | 57 | #include "inferior.h" |
48136e00 LM |
58 | |
59 | /* Chain containing all defined memory-tag subcommands. */ | |
60 | ||
61 | static struct cmd_list_element *memory_tag_list; | |
c906108c | 62 | |
c906108c SS |
63 | /* Last specified output format. */ |
64 | ||
a6bac58e | 65 | static char last_format = 0; |
c906108c SS |
66 | |
67 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
68 | ||
69 | static char last_size = 'w'; | |
70 | ||
9be2ae8f TT |
71 | /* Last specified count for the 'x' command. */ |
72 | ||
73 | static int last_count; | |
74 | ||
bef382e6 LM |
75 | /* Last specified tag-printing option. */ |
76 | ||
77 | static bool last_print_tags = false; | |
78 | ||
5d3729b5 | 79 | /* Default address to examine next, and associated architecture. */ |
c906108c | 80 | |
5d3729b5 | 81 | static struct gdbarch *next_gdbarch; |
c906108c SS |
82 | static CORE_ADDR next_address; |
83 | ||
a4642986 MR |
84 | /* Number of delay instructions following current disassembled insn. */ |
85 | ||
86 | static int branch_delay_insns; | |
87 | ||
c906108c SS |
88 | /* Last address examined. */ |
89 | ||
90 | static CORE_ADDR last_examine_address; | |
91 | ||
92 | /* Contents of last address examined. | |
93 | This is not valid past the end of the `x' command! */ | |
94 | ||
9b558729 | 95 | static value_ref_ptr last_examine_value; |
c906108c SS |
96 | |
97 | /* Largest offset between a symbolic value and an address, that will be | |
98 | printed as `0x1234 <symbol+offset>'. */ | |
99 | ||
100 | static unsigned int max_symbolic_offset = UINT_MAX; | |
920d2a44 AC |
101 | static void |
102 | show_max_symbolic_offset (struct ui_file *file, int from_tty, | |
103 | struct cmd_list_element *c, const char *value) | |
104 | { | |
6cb06a8c TT |
105 | gdb_printf (file, |
106 | _("The largest offset that will be " | |
107 | "printed in <symbol+1234> form is %s.\n"), | |
108 | value); | |
920d2a44 | 109 | } |
c906108c SS |
110 | |
111 | /* Append the source filename and linenumber of the symbol when | |
112 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
491144b5 | 113 | static bool print_symbol_filename = false; |
920d2a44 AC |
114 | static void |
115 | show_print_symbol_filename (struct ui_file *file, int from_tty, | |
116 | struct cmd_list_element *c, const char *value) | |
117 | { | |
6cb06a8c TT |
118 | gdb_printf (file, _("Printing of source filename and " |
119 | "line number with <symbol> is %s.\n"), | |
120 | value); | |
920d2a44 | 121 | } |
c906108c SS |
122 | |
123 | /* Number of auto-display expression currently being displayed. | |
9d8fa392 | 124 | So that we can disable it if we get a signal within it. |
c906108c SS |
125 | -1 when not doing one. */ |
126 | ||
5a18e302 | 127 | static int current_display_number; |
c906108c | 128 | |
8be4b118 TT |
129 | /* Last allocated display number. */ |
130 | ||
131 | static int display_number; | |
132 | ||
c906108c | 133 | struct display |
c5aa993b | 134 | { |
8be4b118 TT |
135 | display (const char *exp_string_, expression_up &&exp_, |
136 | const struct format_data &format_, struct program_space *pspace_, | |
137 | const struct block *block_) | |
138 | : exp_string (exp_string_), | |
139 | exp (std::move (exp_)), | |
140 | number (++display_number), | |
141 | format (format_), | |
142 | pspace (pspace_), | |
143 | block (block_), | |
144 | enabled_p (true) | |
145 | { | |
146 | } | |
6c95b8df | 147 | |
fa8a61dc | 148 | /* The expression as the user typed it. */ |
8be4b118 | 149 | std::string exp_string; |
6c95b8df | 150 | |
c5aa993b | 151 | /* Expression to be evaluated and displayed. */ |
4d01a485 | 152 | expression_up exp; |
6c95b8df | 153 | |
c5aa993b JM |
154 | /* Item number of this auto-display item. */ |
155 | int number; | |
6c95b8df | 156 | |
c5aa993b JM |
157 | /* Display format specified. */ |
158 | struct format_data format; | |
6c95b8df PA |
159 | |
160 | /* Program space associated with `block'. */ | |
161 | struct program_space *pspace; | |
162 | ||
0df8b418 | 163 | /* Innermost block required by this expression when evaluated. */ |
270140bd | 164 | const struct block *block; |
6c95b8df | 165 | |
0df8b418 | 166 | /* Status of this display (enabled or disabled). */ |
8be4b118 | 167 | bool enabled_p; |
c5aa993b | 168 | }; |
c906108c | 169 | |
8be4b118 TT |
170 | /* Expressions whose values should be displayed automatically each |
171 | time the program stops. */ | |
c906108c | 172 | |
8be4b118 | 173 | static std::vector<std::unique_ptr<struct display>> all_displays; |
c9174737 | 174 | |
0df8b418 | 175 | /* Prototypes for local functions. */ |
c906108c | 176 | |
a14ed312 | 177 | static void do_one_display (struct display *); |
c906108c | 178 | \f |
c5aa993b | 179 | |
c906108c SS |
180 | /* Decode a format specification. *STRING_PTR should point to it. |
181 | OFORMAT and OSIZE are used as defaults for the format and size | |
182 | if none are given in the format specification. | |
183 | If OSIZE is zero, then the size field of the returned value | |
184 | should be set only if a size is explicitly specified by the | |
185 | user. | |
186 | The structure returned describes all the data | |
187 | found in the specification. In addition, *STRING_PTR is advanced | |
188 | past the specification and past all whitespace following it. */ | |
189 | ||
190 | static struct format_data | |
6f937416 | 191 | decode_format (const char **string_ptr, int oformat, int osize) |
c906108c SS |
192 | { |
193 | struct format_data val; | |
6f937416 | 194 | const char *p = *string_ptr; |
c906108c SS |
195 | |
196 | val.format = '?'; | |
197 | val.size = '?'; | |
198 | val.count = 1; | |
a6bac58e | 199 | val.raw = 0; |
bef382e6 | 200 | val.print_tags = false; |
c906108c | 201 | |
bb556f1f TK |
202 | if (*p == '-') |
203 | { | |
204 | val.count = -1; | |
205 | p++; | |
206 | } | |
c906108c | 207 | if (*p >= '0' && *p <= '9') |
bb556f1f | 208 | val.count *= atoi (p); |
c5aa993b JM |
209 | while (*p >= '0' && *p <= '9') |
210 | p++; | |
c906108c SS |
211 | |
212 | /* Now process size or format letters that follow. */ | |
213 | ||
214 | while (1) | |
215 | { | |
216 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
217 | val.size = *p++; | |
a6bac58e TT |
218 | else if (*p == 'r') |
219 | { | |
220 | val.raw = 1; | |
221 | p++; | |
222 | } | |
bef382e6 LM |
223 | else if (*p == 'm') |
224 | { | |
225 | val.print_tags = true; | |
226 | p++; | |
227 | } | |
c906108c SS |
228 | else if (*p >= 'a' && *p <= 'z') |
229 | val.format = *p++; | |
230 | else | |
231 | break; | |
232 | } | |
233 | ||
2f433492 | 234 | *string_ptr = skip_spaces (p); |
c906108c SS |
235 | |
236 | /* Set defaults for format and size if not specified. */ | |
237 | if (val.format == '?') | |
238 | { | |
239 | if (val.size == '?') | |
240 | { | |
241 | /* Neither has been specified. */ | |
242 | val.format = oformat; | |
243 | val.size = osize; | |
244 | } | |
245 | else | |
246 | /* If a size is specified, any format makes a reasonable | |
247 | default except 'i'. */ | |
248 | val.format = oformat == 'i' ? 'x' : oformat; | |
249 | } | |
250 | else if (val.size == '?') | |
251 | switch (val.format) | |
252 | { | |
253 | case 'a': | |
5d3729b5 UW |
254 | /* Pick the appropriate size for an address. This is deferred |
255 | until do_examine when we know the actual architecture to use. | |
256 | A special size value of 'a' is used to indicate this case. */ | |
257 | val.size = osize ? 'a' : osize; | |
c906108c SS |
258 | break; |
259 | case 'f': | |
260 | /* Floating point has to be word or giantword. */ | |
261 | if (osize == 'w' || osize == 'g') | |
262 | val.size = osize; | |
263 | else | |
264 | /* Default it to giantword if the last used size is not | |
265 | appropriate. */ | |
266 | val.size = osize ? 'g' : osize; | |
267 | break; | |
268 | case 'c': | |
269 | /* Characters default to one byte. */ | |
270 | val.size = osize ? 'b' : osize; | |
271 | break; | |
9a22f0d0 | 272 | case 's': |
3e43a32a MS |
273 | /* Display strings with byte size chars unless explicitly |
274 | specified. */ | |
9a22f0d0 PM |
275 | val.size = '\0'; |
276 | break; | |
277 | ||
c906108c SS |
278 | default: |
279 | /* The default is the size most recently specified. */ | |
280 | val.size = osize; | |
281 | } | |
282 | ||
283 | return val; | |
284 | } | |
285 | \f | |
79a45b7d | 286 | /* Print value VAL on stream according to OPTIONS. |
c906108c | 287 | Do not end with a newline. |
c906108c | 288 | SIZE is the letter for the size of datum being printed. |
ea37ba09 DJ |
289 | This is used to pad hex numbers so they line up. SIZE is 0 |
290 | for print / output and set for examine. */ | |
c906108c SS |
291 | |
292 | static void | |
79a45b7d TT |
293 | print_formatted (struct value *val, int size, |
294 | const struct value_print_options *options, | |
fba45db2 | 295 | struct ui_file *stream) |
c906108c | 296 | { |
d0c97917 | 297 | struct type *type = check_typedef (val->type ()); |
df86565b | 298 | int len = type->length (); |
c906108c | 299 | |
736355f2 | 300 | if (val->lval () == lval_memory) |
9feb2d07 | 301 | next_address = val->address () + len; |
c906108c | 302 | |
ea37ba09 | 303 | if (size) |
c906108c | 304 | { |
79a45b7d | 305 | switch (options->format) |
ea37ba09 DJ |
306 | { |
307 | case 's': | |
6c7a06a3 | 308 | { |
d0c97917 | 309 | struct type *elttype = val->type (); |
ad3bbd48 | 310 | |
9feb2d07 | 311 | next_address = (val->address () |
09ca9e2e | 312 | + val_print_string (elttype, NULL, |
9feb2d07 | 313 | val->address (), -1, |
9a22f0d0 | 314 | stream, options) * len); |
6c7a06a3 | 315 | } |
ea37ba09 | 316 | return; |
c906108c | 317 | |
ea37ba09 DJ |
318 | case 'i': |
319 | /* We often wrap here if there are long symbolic names. */ | |
1285ce86 | 320 | stream->wrap_here (4); |
9feb2d07 | 321 | next_address = (val->address () |
8ee511af | 322 | + gdb_print_insn (type->arch (), |
9feb2d07 | 323 | val->address (), stream, |
ea37ba09 DJ |
324 | &branch_delay_insns)); |
325 | return; | |
326 | } | |
c906108c | 327 | } |
ea37ba09 | 328 | |
79a45b7d | 329 | if (options->format == 0 || options->format == 's' |
3d87245c | 330 | || type->code () == TYPE_CODE_VOID |
78134374 SM |
331 | || type->code () == TYPE_CODE_REF |
332 | || type->code () == TYPE_CODE_ARRAY | |
333 | || type->code () == TYPE_CODE_STRING | |
334 | || type->code () == TYPE_CODE_STRUCT | |
335 | || type->code () == TYPE_CODE_UNION | |
336 | || type->code () == TYPE_CODE_NAMESPACE) | |
79a45b7d | 337 | value_print (val, stream, options); |
ea37ba09 | 338 | else |
b021a221 MS |
339 | /* User specified format, so don't look to the type to tell us |
340 | what to do. */ | |
4dba70ee | 341 | value_print_scalar_formatted (val, options, size, stream); |
c906108c SS |
342 | } |
343 | ||
b806fb9a UW |
344 | /* Return builtin floating point type of same length as TYPE. |
345 | If no such type is found, return TYPE itself. */ | |
346 | static struct type * | |
50810684 | 347 | float_type_from_length (struct type *type) |
b806fb9a | 348 | { |
8ee511af | 349 | struct gdbarch *gdbarch = type->arch (); |
b806fb9a | 350 | const struct builtin_type *builtin = builtin_type (gdbarch); |
b806fb9a | 351 | |
70728e1d TT |
352 | if (type->length () == builtin->builtin_half->length ()) |
353 | type = builtin->builtin_half; | |
354 | else if (type->length () == builtin->builtin_float->length ()) | |
b806fb9a | 355 | type = builtin->builtin_float; |
df86565b | 356 | else if (type->length () == builtin->builtin_double->length ()) |
b806fb9a | 357 | type = builtin->builtin_double; |
df86565b | 358 | else if (type->length () == builtin->builtin_long_double->length ()) |
b806fb9a UW |
359 | type = builtin->builtin_long_double; |
360 | ||
361 | return type; | |
362 | } | |
363 | ||
c906108c | 364 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, |
ab2188aa PA |
365 | according to OPTIONS and SIZE on STREAM. Formats s and i are not |
366 | supported at this level. */ | |
c906108c SS |
367 | |
368 | void | |
7c543f7b | 369 | print_scalar_formatted (const gdb_byte *valaddr, struct type *type, |
79a45b7d TT |
370 | const struct value_print_options *options, |
371 | int size, struct ui_file *stream) | |
c906108c | 372 | { |
8ee511af | 373 | struct gdbarch *gdbarch = type->arch (); |
df86565b | 374 | unsigned int len = type->length (); |
34877895 | 375 | enum bfd_endian byte_order = type_byte_order (type); |
c906108c | 376 | |
ab2188aa PA |
377 | /* String printing should go through val_print_scalar_formatted. */ |
378 | gdb_assert (options->format != 's'); | |
ea37ba09 | 379 | |
ef166cf4 | 380 | /* If the value is a pointer, and pointers and addresses are not the |
d0aee0c4 | 381 | same, then at this point, the value's length (in target bytes) is |
df86565b | 382 | gdbarch_addr_bit/TARGET_CHAR_BIT, not type->length (). */ |
78134374 | 383 | if (type->code () == TYPE_CODE_PTR) |
69feb676 | 384 | len = gdbarch_addr_bit (gdbarch) / TARGET_CHAR_BIT; |
ef166cf4 | 385 | |
c906108c SS |
386 | /* If we are printing it as unsigned, truncate it in case it is actually |
387 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
388 | (if shorts are 16 bits) instead of 4294967295). */ | |
d9109c80 | 389 | if (options->format != 'c' |
c6d940a9 | 390 | && (options->format != 'd' || type->is_unsigned ())) |
c906108c | 391 | { |
df86565b SM |
392 | if (len < type->length () && byte_order == BFD_ENDIAN_BIG) |
393 | valaddr += type->length () - len; | |
c906108c SS |
394 | } |
395 | ||
20a5fcbd TT |
396 | /* Allow LEN == 0, and in this case, don't assume that VALADDR is |
397 | valid. */ | |
398 | const gdb_byte zero = 0; | |
399 | if (len == 0) | |
400 | { | |
401 | len = 1; | |
402 | valaddr = &zero; | |
403 | } | |
404 | ||
d9109c80 | 405 | if (size != 0 && (options->format == 'x' || options->format == 't')) |
c906108c | 406 | { |
d9109c80 TT |
407 | /* Truncate to fit. */ |
408 | unsigned newlen; | |
409 | switch (size) | |
c906108c | 410 | { |
d9109c80 TT |
411 | case 'b': |
412 | newlen = 1; | |
413 | break; | |
414 | case 'h': | |
415 | newlen = 2; | |
416 | break; | |
417 | case 'w': | |
418 | newlen = 4; | |
419 | break; | |
420 | case 'g': | |
421 | newlen = 8; | |
422 | break; | |
423 | default: | |
424 | error (_("Undefined output size \"%c\"."), size); | |
c906108c | 425 | } |
d9109c80 TT |
426 | if (newlen < len && byte_order == BFD_ENDIAN_BIG) |
427 | valaddr += len - newlen; | |
428 | len = newlen; | |
429 | } | |
c906108c | 430 | |
56262a93 | 431 | /* Biased range types and sub-word scalar types must be handled |
20a5fcbd | 432 | here; the value is correctly computed by unpack_long. */ |
4e962e74 TT |
433 | gdb::byte_vector converted_bytes; |
434 | /* Some cases below will unpack the value again. In the biased | |
435 | range case, we want to avoid this, so we store the unpacked value | |
436 | here for possible use later. */ | |
6b09f134 | 437 | std::optional<LONGEST> val_long; |
56262a93 | 438 | if ((is_fixed_point_type (type) |
4e962e74 TT |
439 | && (options->format == 'o' |
440 | || options->format == 'x' | |
441 | || options->format == 't' | |
442 | || options->format == 'z' | |
443 | || options->format == 'd' | |
444 | || options->format == 'u')) | |
20a5fcbd TT |
445 | || (type->code () == TYPE_CODE_RANGE && type->bounds ()->bias != 0) |
446 | || type->bit_size_differs_p ()) | |
d9109c80 | 447 | { |
4e962e74 | 448 | val_long.emplace (unpack_long (type, valaddr)); |
df86565b SM |
449 | converted_bytes.resize (type->length ()); |
450 | store_signed_integer (converted_bytes.data (), type->length (), | |
4e962e74 TT |
451 | byte_order, *val_long); |
452 | valaddr = converted_bytes.data (); | |
d9109c80 | 453 | } |
c906108c | 454 | |
fdf0cbc2 UW |
455 | /* Printing a non-float type as 'f' will interpret the data as if it were |
456 | of a floating-point type of the same length, if that exists. Otherwise, | |
457 | the data is printed as integer. */ | |
458 | char format = options->format; | |
78134374 | 459 | if (format == 'f' && type->code () != TYPE_CODE_FLT) |
fdf0cbc2 UW |
460 | { |
461 | type = float_type_from_length (type); | |
78134374 | 462 | if (type->code () != TYPE_CODE_FLT) |
dda83cd7 | 463 | format = 0; |
fdf0cbc2 UW |
464 | } |
465 | ||
466 | switch (format) | |
d9109c80 TT |
467 | { |
468 | case 'o': | |
469 | print_octal_chars (stream, valaddr, len, byte_order); | |
470 | break; | |
d6382fff TT |
471 | case 'd': |
472 | print_decimal_chars (stream, valaddr, len, true, byte_order); | |
473 | break; | |
c906108c | 474 | case 'u': |
d9109c80 | 475 | print_decimal_chars (stream, valaddr, len, false, byte_order); |
c906108c | 476 | break; |
d9109c80 | 477 | case 0: |
78134374 | 478 | if (type->code () != TYPE_CODE_FLT) |
d9109c80 | 479 | { |
c6d940a9 | 480 | print_decimal_chars (stream, valaddr, len, !type->is_unsigned (), |
d9109c80 TT |
481 | byte_order); |
482 | break; | |
483 | } | |
d182e398 | 484 | [[fallthrough]]; |
d9109c80 | 485 | case 'f': |
d9109c80 | 486 | print_floating (valaddr, type, stream); |
c906108c SS |
487 | break; |
488 | ||
d9109c80 | 489 | case 't': |
21a527df | 490 | print_binary_chars (stream, valaddr, len, byte_order, size > 0, options); |
d9109c80 TT |
491 | break; |
492 | case 'x': | |
493 | print_hex_chars (stream, valaddr, len, byte_order, size > 0); | |
494 | break; | |
495 | case 'z': | |
496 | print_hex_chars (stream, valaddr, len, byte_order, true); | |
c906108c | 497 | break; |
c906108c | 498 | case 'c': |
79a45b7d TT |
499 | { |
500 | struct value_print_options opts = *options; | |
69feb676 | 501 | |
4e962e74 TT |
502 | if (!val_long.has_value ()) |
503 | val_long.emplace (unpack_long (type, valaddr)); | |
d9109c80 | 504 | |
ad3bbd48 | 505 | opts.format = 0; |
c6d940a9 | 506 | if (type->is_unsigned ()) |
69feb676 | 507 | type = builtin_type (gdbarch)->builtin_true_unsigned_char; |
24b21115 | 508 | else |
69feb676 UW |
509 | type = builtin_type (gdbarch)->builtin_true_char; |
510 | ||
4e962e74 | 511 | value_print (value_from_longest (type, *val_long), stream, &opts); |
79a45b7d | 512 | } |
c906108c SS |
513 | break; |
514 | ||
d9109c80 | 515 | case 'a': |
c906108c | 516 | { |
4e962e74 TT |
517 | if (!val_long.has_value ()) |
518 | val_long.emplace (unpack_long (type, valaddr)); | |
519 | print_address (gdbarch, *val_long, stream); | |
c906108c SS |
520 | } |
521 | break; | |
522 | ||
523 | default: | |
fdf0cbc2 | 524 | error (_("Undefined output format \"%c\"."), format); |
c906108c SS |
525 | } |
526 | } | |
527 | ||
528 | /* Specify default address for `x' command. | |
675dcf4f | 529 | The `info lines' command uses this. */ |
c906108c SS |
530 | |
531 | void | |
8b9b9e1a | 532 | set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 533 | { |
8b9b9e1a UW |
534 | struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
535 | ||
5d3729b5 | 536 | next_gdbarch = gdbarch; |
c906108c SS |
537 | next_address = addr; |
538 | ||
539 | /* Make address available to the user as $_. */ | |
540 | set_internalvar (lookup_internalvar ("_"), | |
8b9b9e1a | 541 | value_from_pointer (ptr_type, addr)); |
c906108c SS |
542 | } |
543 | ||
544 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
545 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
546 | Optionally also print source file and line number, if available. | |
547 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
548 | or to interpret it as a possible C++ name and convert it back to source | |
549 | form. However note that DO_DEMANGLE can be overridden by the specific | |
9cb709b6 TT |
550 | settings of the demangle and asm_demangle variables. Returns |
551 | non-zero if anything was printed; zero otherwise. */ | |
c906108c | 552 | |
9cb709b6 | 553 | int |
22e722e1 DJ |
554 | print_address_symbolic (struct gdbarch *gdbarch, CORE_ADDR addr, |
555 | struct ui_file *stream, | |
a121b7c1 | 556 | int do_demangle, const char *leadin) |
dfcd3bfb | 557 | { |
c7110220 | 558 | std::string name, filename; |
dfcd3bfb JM |
559 | int unmapped = 0; |
560 | int offset = 0; | |
561 | int line = 0; | |
562 | ||
2dc80cf8 | 563 | if (build_address_symbolic (gdbarch, addr, do_demangle, false, &name, |
dda83cd7 | 564 | &offset, &filename, &line, &unmapped)) |
c7110220 | 565 | return 0; |
dfcd3bfb | 566 | |
0426ad51 | 567 | gdb_puts (leadin, stream); |
dfcd3bfb | 568 | if (unmapped) |
0426ad51 | 569 | gdb_puts ("<*", stream); |
dfcd3bfb | 570 | else |
0426ad51 | 571 | gdb_puts ("<", stream); |
af79b68d | 572 | fputs_styled (name.c_str (), function_name_style.style (), stream); |
dfcd3bfb | 573 | if (offset != 0) |
6cb06a8c | 574 | gdb_printf (stream, "%+d", offset); |
dfcd3bfb JM |
575 | |
576 | /* Append source filename and line number if desired. Give specific | |
577 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
c7110220 | 578 | if (print_symbol_filename && !filename.empty ()) |
dfcd3bfb | 579 | { |
0426ad51 | 580 | gdb_puts (line == -1 ? " in " : " at ", stream); |
af79b68d | 581 | fputs_styled (filename.c_str (), file_name_style.style (), stream); |
dfcd3bfb | 582 | if (line != -1) |
6cb06a8c | 583 | gdb_printf (stream, ":%d", line); |
dfcd3bfb JM |
584 | } |
585 | if (unmapped) | |
0426ad51 | 586 | gdb_puts ("*>", stream); |
dfcd3bfb | 587 | else |
0426ad51 | 588 | gdb_puts (">", stream); |
dfcd3bfb | 589 | |
9cb709b6 | 590 | return 1; |
dfcd3bfb JM |
591 | } |
592 | ||
c7110220 TT |
593 | /* See valprint.h. */ |
594 | ||
dfcd3bfb | 595 | int |
22e722e1 DJ |
596 | build_address_symbolic (struct gdbarch *gdbarch, |
597 | CORE_ADDR addr, /* IN */ | |
2dc80cf8 KB |
598 | bool do_demangle, /* IN */ |
599 | bool prefer_sym_over_minsym, /* IN */ | |
c7110220 | 600 | std::string *name, /* OUT */ |
dfcd3bfb | 601 | int *offset, /* OUT */ |
c7110220 | 602 | std::string *filename, /* OUT */ |
dfcd3bfb JM |
603 | int *line, /* OUT */ |
604 | int *unmapped) /* OUT */ | |
c906108c | 605 | { |
77e371c0 | 606 | struct bound_minimal_symbol msymbol; |
c906108c | 607 | struct symbol *symbol; |
c906108c | 608 | CORE_ADDR name_location = 0; |
714835d5 | 609 | struct obj_section *section = NULL; |
0d5cff50 | 610 | const char *name_temp = ""; |
dfcd3bfb | 611 | |
89c83b10 | 612 | /* Let's say it is mapped (not unmapped). */ |
dfcd3bfb | 613 | *unmapped = 0; |
c906108c | 614 | |
dfcd3bfb | 615 | /* Determine if the address is in an overlay, and whether it is |
675dcf4f | 616 | mapped. */ |
c906108c SS |
617 | if (overlay_debugging) |
618 | { | |
619 | section = find_pc_overlay (addr); | |
620 | if (pc_in_unmapped_range (addr, section)) | |
621 | { | |
dfcd3bfb | 622 | *unmapped = 1; |
c906108c SS |
623 | addr = overlay_mapped_address (addr, section); |
624 | } | |
625 | } | |
626 | ||
2dc80cf8 KB |
627 | /* Try to find the address in both the symbol table and the minsyms. |
628 | In most cases, we'll prefer to use the symbol instead of the | |
629 | minsym. However, there are cases (see below) where we'll choose | |
630 | to use the minsym instead. */ | |
c906108c SS |
631 | |
632 | /* This is defective in the sense that it only finds text symbols. So | |
633 | really this is kind of pointless--we should make sure that the | |
634 | minimal symbols have everything we need (by changing that we could | |
635 | save some memory, but for many debug format--ELF/DWARF or | |
636 | anything/stabs--it would be inconvenient to eliminate those minimal | |
637 | symbols anyway). */ | |
77e371c0 | 638 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section); |
c906108c SS |
639 | symbol = find_pc_sect_function (addr, section); |
640 | ||
641 | if (symbol) | |
642 | { | |
22e722e1 DJ |
643 | /* If this is a function (i.e. a code address), strip out any |
644 | non-address bits. For instance, display a pointer to the | |
645 | first instruction of a Thumb function as <function>; the | |
646 | second instruction will be <function+2>, even though the | |
647 | pointer is <function+3>. This matches the ISA behavior. */ | |
648 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
649 | ||
6395b628 | 650 | name_location = symbol->value_block ()->entry_pc (); |
406fc7fb | 651 | if (do_demangle || asm_demangle) |
987012b8 | 652 | name_temp = symbol->print_name (); |
c906108c | 653 | else |
987012b8 | 654 | name_temp = symbol->linkage_name (); |
c906108c SS |
655 | } |
656 | ||
77e371c0 | 657 | if (msymbol.minsym != NULL |
5bbfd12d SM |
658 | && msymbol.minsym->has_size () |
659 | && msymbol.minsym->size () == 0 | |
60f62e2b SM |
660 | && msymbol.minsym->type () != mst_text |
661 | && msymbol.minsym->type () != mst_text_gnu_ifunc | |
662 | && msymbol.minsym->type () != mst_file_text) | |
77e371c0 | 663 | msymbol.minsym = NULL; |
9cb709b6 | 664 | |
77e371c0 | 665 | if (msymbol.minsym != NULL) |
c906108c | 666 | { |
2dc80cf8 KB |
667 | /* Use the minsym if no symbol is found. |
668 | ||
669 | Additionally, use the minsym instead of a (found) symbol if | |
670 | the following conditions all hold: | |
671 | 1) The prefer_sym_over_minsym flag is false. | |
672 | 2) The minsym address is identical to that of the address under | |
673 | consideration. | |
674 | 3) The symbol address is not identical to that of the address | |
675 | under consideration. */ | |
676 | if (symbol == NULL || | |
dda83cd7 | 677 | (!prefer_sym_over_minsym |
4aeddc50 | 678 | && msymbol.value_address () == addr |
2dc80cf8 | 679 | && name_location != addr)) |
c906108c | 680 | { |
fe8400b4 WN |
681 | /* If this is a function (i.e. a code address), strip out any |
682 | non-address bits. For instance, display a pointer to the | |
683 | first instruction of a Thumb function as <function>; the | |
684 | second instruction will be <function+2>, even though the | |
685 | pointer is <function+3>. This matches the ISA behavior. */ | |
60f62e2b SM |
686 | if (msymbol.minsym->type () == mst_text |
687 | || msymbol.minsym->type () == mst_text_gnu_ifunc | |
688 | || msymbol.minsym->type () == mst_file_text | |
689 | || msymbol.minsym->type () == mst_solib_trampoline) | |
fe8400b4 WN |
690 | addr = gdbarch_addr_bits_remove (gdbarch, addr); |
691 | ||
c906108c | 692 | symbol = 0; |
4aeddc50 | 693 | name_location = msymbol.value_address (); |
406fc7fb | 694 | if (do_demangle || asm_demangle) |
c9d95fa3 | 695 | name_temp = msymbol.minsym->print_name (); |
c906108c | 696 | else |
c9d95fa3 | 697 | name_temp = msymbol.minsym->linkage_name (); |
c906108c SS |
698 | } |
699 | } | |
77e371c0 | 700 | if (symbol == NULL && msymbol.minsym == NULL) |
dfcd3bfb | 701 | return 1; |
c906108c | 702 | |
c906108c SS |
703 | /* If the nearest symbol is too far away, don't print anything symbolic. */ |
704 | ||
705 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
706 | CORE_ADDR. But when we detect unsigned wraparound in the | |
707 | CORE_ADDR math, we ignore this test and print the offset, | |
708 | because addr+max_symbolic_offset has wrapped through the end | |
709 | of the address space back to the beginning, giving bogus comparison. */ | |
710 | if (addr > name_location + max_symbolic_offset | |
711 | && name_location + max_symbolic_offset > name_location) | |
dfcd3bfb | 712 | return 1; |
c906108c | 713 | |
a1530dc7 | 714 | *offset = (LONGEST) addr - name_location; |
dfcd3bfb | 715 | |
c7110220 | 716 | *name = name_temp; |
c906108c | 717 | |
c906108c SS |
718 | if (print_symbol_filename) |
719 | { | |
720 | struct symtab_and_line sal; | |
721 | ||
722 | sal = find_pc_sect_line (addr, section, 0); | |
723 | ||
724 | if (sal.symtab) | |
dfcd3bfb | 725 | { |
c7110220 | 726 | *filename = symtab_to_filename_for_display (sal.symtab); |
dfcd3bfb JM |
727 | *line = sal.line; |
728 | } | |
c906108c | 729 | } |
dfcd3bfb | 730 | return 0; |
c906108c SS |
731 | } |
732 | ||
c906108c SS |
733 | |
734 | /* Print address ADDR symbolically on STREAM. | |
735 | First print it as a number. Then perhaps print | |
736 | <SYMBOL + OFFSET> after the number. */ | |
737 | ||
738 | void | |
5af949e3 UW |
739 | print_address (struct gdbarch *gdbarch, |
740 | CORE_ADDR addr, struct ui_file *stream) | |
c906108c | 741 | { |
35fb8261 | 742 | fputs_styled (paddress (gdbarch, addr), address_style.style (), stream); |
22e722e1 | 743 | print_address_symbolic (gdbarch, addr, stream, asm_demangle, " "); |
c906108c SS |
744 | } |
745 | ||
2b28d209 PP |
746 | /* Return a prefix for instruction address: |
747 | "=> " for current instruction, else " ". */ | |
748 | ||
749 | const char * | |
750 | pc_prefix (CORE_ADDR addr) | |
751 | { | |
752 | if (has_stack_frames ()) | |
753 | { | |
bd2b40ac | 754 | frame_info_ptr frame; |
2b28d209 PP |
755 | CORE_ADDR pc; |
756 | ||
757 | frame = get_selected_frame (NULL); | |
ce406537 | 758 | if (get_frame_pc_if_available (frame, &pc) && pc == addr) |
2b28d209 PP |
759 | return "=> "; |
760 | } | |
761 | return " "; | |
762 | } | |
763 | ||
c906108c SS |
764 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE |
765 | controls whether to print the symbolic name "raw" or demangled. | |
9cb709b6 | 766 | Return non-zero if anything was printed; zero otherwise. */ |
c906108c | 767 | |
9cb709b6 | 768 | int |
edf0c1b7 TT |
769 | print_address_demangle (const struct value_print_options *opts, |
770 | struct gdbarch *gdbarch, CORE_ADDR addr, | |
5af949e3 | 771 | struct ui_file *stream, int do_demangle) |
c906108c | 772 | { |
1d51a733 | 773 | if (opts->addressprint) |
c906108c | 774 | { |
35fb8261 | 775 | fputs_styled (paddress (gdbarch, addr), address_style.style (), stream); |
22e722e1 | 776 | print_address_symbolic (gdbarch, addr, stream, do_demangle, " "); |
c906108c SS |
777 | } |
778 | else | |
779 | { | |
9cb709b6 | 780 | return print_address_symbolic (gdbarch, addr, stream, do_demangle, ""); |
c906108c | 781 | } |
9cb709b6 | 782 | return 1; |
c906108c SS |
783 | } |
784 | \f | |
785 | ||
bb556f1f TK |
786 | /* Find the address of the instruction that is INST_COUNT instructions before |
787 | the instruction at ADDR. | |
788 | Since some architectures have variable-length instructions, we can't just | |
789 | simply subtract INST_COUNT * INSN_LEN from ADDR. Instead, we use line | |
790 | number information to locate the nearest known instruction boundary, | |
791 | and disassemble forward from there. If we go out of the symbol range | |
792 | during disassembling, we return the lowest address we've got so far and | |
793 | set the number of instructions read to INST_READ. */ | |
794 | ||
795 | static CORE_ADDR | |
796 | find_instruction_backward (struct gdbarch *gdbarch, CORE_ADDR addr, | |
dda83cd7 | 797 | int inst_count, int *inst_read) |
bb556f1f TK |
798 | { |
799 | /* The vector PCS is used to store instruction addresses within | |
800 | a pc range. */ | |
801 | CORE_ADDR loop_start, loop_end, p; | |
52d214d3 | 802 | std::vector<CORE_ADDR> pcs; |
bb556f1f | 803 | struct symtab_and_line sal; |
bb556f1f TK |
804 | |
805 | *inst_read = 0; | |
806 | loop_start = loop_end = addr; | |
807 | ||
808 | /* In each iteration of the outer loop, we get a pc range that ends before | |
809 | LOOP_START, then we count and store every instruction address of the range | |
810 | iterated in the loop. | |
811 | If the number of instructions counted reaches INST_COUNT, return the | |
812 | stored address that is located INST_COUNT instructions back from ADDR. | |
813 | If INST_COUNT is not reached, we subtract the number of counted | |
814 | instructions from INST_COUNT, and go to the next iteration. */ | |
815 | do | |
816 | { | |
52d214d3 | 817 | pcs.clear (); |
bb556f1f TK |
818 | sal = find_pc_sect_line (loop_start, NULL, 1); |
819 | if (sal.line <= 0) | |
dda83cd7 SM |
820 | { |
821 | /* We reach here when line info is not available. In this case, | |
822 | we print a message and just exit the loop. The return value | |
823 | is calculated after the loop. */ | |
6cb06a8c TT |
824 | gdb_printf (_("No line number information available " |
825 | "for address ")); | |
1285ce86 | 826 | gdb_stdout->wrap_here (2); |
dda83cd7 | 827 | print_address (gdbarch, loop_start - 1, gdb_stdout); |
6cb06a8c | 828 | gdb_printf ("\n"); |
dda83cd7 SM |
829 | break; |
830 | } | |
bb556f1f TK |
831 | |
832 | loop_end = loop_start; | |
833 | loop_start = sal.pc; | |
834 | ||
835 | /* This loop pushes instruction addresses in the range from | |
dda83cd7 | 836 | LOOP_START to LOOP_END. */ |
bb556f1f | 837 | for (p = loop_start; p < loop_end;) |
dda83cd7 | 838 | { |
52d214d3 | 839 | pcs.push_back (p); |
dda83cd7 SM |
840 | p += gdb_insn_length (gdbarch, p); |
841 | } | |
bb556f1f | 842 | |
52d214d3 TT |
843 | inst_count -= pcs.size (); |
844 | *inst_read += pcs.size (); | |
bb556f1f TK |
845 | } |
846 | while (inst_count > 0); | |
847 | ||
848 | /* After the loop, the vector PCS has instruction addresses of the last | |
849 | source line we processed, and INST_COUNT has a negative value. | |
850 | We return the address at the index of -INST_COUNT in the vector for | |
851 | the reason below. | |
852 | Let's assume the following instruction addresses and run 'x/-4i 0x400e'. | |
853 | Line X of File | |
dda83cd7 SM |
854 | 0x4000 |
855 | 0x4001 | |
856 | 0x4005 | |
bb556f1f | 857 | Line Y of File |
dda83cd7 SM |
858 | 0x4009 |
859 | 0x400c | |
bb556f1f | 860 | => 0x400e |
dda83cd7 | 861 | 0x4011 |
bb556f1f TK |
862 | find_instruction_backward is called with INST_COUNT = 4 and expected to |
863 | return 0x4001. When we reach here, INST_COUNT is set to -1 because | |
864 | it was subtracted by 2 (from Line Y) and 3 (from Line X). The value | |
865 | 4001 is located at the index 1 of the last iterated line (= Line X), | |
866 | which is simply calculated by -INST_COUNT. | |
867 | The case when the length of PCS is 0 means that we reached an area for | |
868 | which line info is not available. In such case, we return LOOP_START, | |
869 | which was the lowest instruction address that had line info. */ | |
52d214d3 | 870 | p = pcs.size () > 0 ? pcs[-inst_count] : loop_start; |
bb556f1f TK |
871 | |
872 | /* INST_READ includes all instruction addresses in a pc range. Need to | |
873 | exclude the beginning part up to the address we're returning. That | |
874 | is, exclude {0x4000} in the example above. */ | |
875 | if (inst_count < 0) | |
876 | *inst_read += inst_count; | |
877 | ||
bb556f1f TK |
878 | return p; |
879 | } | |
880 | ||
881 | /* Backward read LEN bytes of target memory from address MEMADDR + LEN, | |
882 | placing the results in GDB's memory from MYADDR + LEN. Returns | |
883 | a count of the bytes actually read. */ | |
884 | ||
885 | static int | |
886 | read_memory_backward (struct gdbarch *gdbarch, | |
dda83cd7 | 887 | CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
bb556f1f TK |
888 | { |
889 | int errcode; | |
890 | int nread; /* Number of bytes actually read. */ | |
891 | ||
892 | /* First try a complete read. */ | |
893 | errcode = target_read_memory (memaddr, myaddr, len); | |
894 | if (errcode == 0) | |
895 | { | |
896 | /* Got it all. */ | |
897 | nread = len; | |
898 | } | |
899 | else | |
900 | { | |
901 | /* Loop, reading one byte at a time until we get as much as we can. */ | |
902 | memaddr += len; | |
903 | myaddr += len; | |
904 | for (nread = 0; nread < len; ++nread) | |
dda83cd7 SM |
905 | { |
906 | errcode = target_read_memory (--memaddr, --myaddr, 1); | |
907 | if (errcode != 0) | |
908 | { | |
909 | /* The read was unsuccessful, so exit the loop. */ | |
6cb06a8c TT |
910 | gdb_printf (_("Cannot access memory at address %s\n"), |
911 | paddress (gdbarch, memaddr)); | |
dda83cd7 SM |
912 | break; |
913 | } | |
914 | } | |
bb556f1f TK |
915 | } |
916 | return nread; | |
917 | } | |
918 | ||
919 | /* Returns true if X (which is LEN bytes wide) is the number zero. */ | |
920 | ||
921 | static int | |
922 | integer_is_zero (const gdb_byte *x, int len) | |
923 | { | |
924 | int i = 0; | |
925 | ||
926 | while (i < len && x[i] == 0) | |
927 | ++i; | |
928 | return (i == len); | |
929 | } | |
930 | ||
931 | /* Find the start address of a string in which ADDR is included. | |
932 | Basically we search for '\0' and return the next address, | |
933 | but if OPTIONS->PRINT_MAX is smaller than the length of a string, | |
934 | we stop searching and return the address to print characters as many as | |
935 | PRINT_MAX from the string. */ | |
936 | ||
937 | static CORE_ADDR | |
938 | find_string_backward (struct gdbarch *gdbarch, | |
dda83cd7 SM |
939 | CORE_ADDR addr, int count, int char_size, |
940 | const struct value_print_options *options, | |
941 | int *strings_counted) | |
bb556f1f TK |
942 | { |
943 | const int chunk_size = 0x20; | |
bb556f1f TK |
944 | int read_error = 0; |
945 | int chars_read = 0; | |
946 | int chars_to_read = chunk_size; | |
947 | int chars_counted = 0; | |
948 | int count_original = count; | |
949 | CORE_ADDR string_start_addr = addr; | |
950 | ||
951 | gdb_assert (char_size == 1 || char_size == 2 || char_size == 4); | |
26fcd5d7 | 952 | gdb::byte_vector buffer (chars_to_read * char_size); |
bb556f1f TK |
953 | while (count > 0 && read_error == 0) |
954 | { | |
955 | int i; | |
956 | ||
957 | addr -= chars_to_read * char_size; | |
26fcd5d7 | 958 | chars_read = read_memory_backward (gdbarch, addr, buffer.data (), |
dda83cd7 | 959 | chars_to_read * char_size); |
bb556f1f TK |
960 | chars_read /= char_size; |
961 | read_error = (chars_read == chars_to_read) ? 0 : 1; | |
76b58849 | 962 | unsigned int print_max_chars = get_print_max_chars (options); |
bb556f1f TK |
963 | /* Searching for '\0' from the end of buffer in backward direction. */ |
964 | for (i = 0; i < chars_read && count > 0 ; ++i, ++chars_counted) | |
dda83cd7 SM |
965 | { |
966 | int offset = (chars_to_read - i - 1) * char_size; | |
967 | ||
968 | if (integer_is_zero (&buffer[offset], char_size) | |
76b58849 | 969 | || chars_counted == print_max_chars) |
dda83cd7 | 970 | { |
76b58849 AB |
971 | /* Found '\0' or reached `print_max_chars'. As OFFSET |
972 | is the offset to '\0', we add CHAR_SIZE to return | |
973 | the start address of a string. */ | |
dda83cd7 SM |
974 | --count; |
975 | string_start_addr = addr + offset + char_size; | |
976 | chars_counted = 0; | |
977 | } | |
978 | } | |
bb556f1f TK |
979 | } |
980 | ||
981 | /* Update STRINGS_COUNTED with the actual number of loaded strings. */ | |
982 | *strings_counted = count_original - count; | |
983 | ||
984 | if (read_error != 0) | |
985 | { | |
986 | /* In error case, STRING_START_ADDR is pointing to the string that | |
dda83cd7 | 987 | was last successfully loaded. Rewind the partially loaded string. */ |
bb556f1f TK |
988 | string_start_addr -= chars_counted * char_size; |
989 | } | |
990 | ||
bb556f1f TK |
991 | return string_start_addr; |
992 | } | |
993 | ||
c906108c SS |
994 | /* Examine data at address ADDR in format FMT. |
995 | Fetch it from memory and print on gdb_stdout. */ | |
996 | ||
997 | static void | |
5d3729b5 | 998 | do_examine (struct format_data fmt, struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 999 | { |
52f0bd74 AC |
1000 | char format = 0; |
1001 | char size; | |
1002 | int count = 1; | |
c906108c | 1003 | struct type *val_type = NULL; |
52f0bd74 AC |
1004 | int i; |
1005 | int maxelts; | |
79a45b7d | 1006 | struct value_print_options opts; |
bb556f1f TK |
1007 | int need_to_update_next_address = 0; |
1008 | CORE_ADDR addr_rewound = 0; | |
c906108c SS |
1009 | |
1010 | format = fmt.format; | |
1011 | size = fmt.size; | |
1012 | count = fmt.count; | |
5d3729b5 | 1013 | next_gdbarch = gdbarch; |
c906108c | 1014 | next_address = addr; |
c906108c | 1015 | |
9a22f0d0 PM |
1016 | /* Instruction format implies fetch single bytes |
1017 | regardless of the specified size. | |
1018 | The case of strings is handled in decode_format, only explicit | |
1019 | size operator are not changed to 'b'. */ | |
1020 | if (format == 'i') | |
c906108c SS |
1021 | size = 'b'; |
1022 | ||
5d3729b5 UW |
1023 | if (size == 'a') |
1024 | { | |
1025 | /* Pick the appropriate size for an address. */ | |
1026 | if (gdbarch_ptr_bit (next_gdbarch) == 64) | |
1027 | size = 'g'; | |
1028 | else if (gdbarch_ptr_bit (next_gdbarch) == 32) | |
1029 | size = 'w'; | |
1030 | else if (gdbarch_ptr_bit (next_gdbarch) == 16) | |
1031 | size = 'h'; | |
1032 | else | |
1033 | /* Bad value for gdbarch_ptr_bit. */ | |
f34652de | 1034 | internal_error (_("failed internal consistency check")); |
5d3729b5 UW |
1035 | } |
1036 | ||
1037 | if (size == 'b') | |
df4df182 | 1038 | val_type = builtin_type (next_gdbarch)->builtin_int8; |
c906108c | 1039 | else if (size == 'h') |
df4df182 | 1040 | val_type = builtin_type (next_gdbarch)->builtin_int16; |
c906108c | 1041 | else if (size == 'w') |
df4df182 | 1042 | val_type = builtin_type (next_gdbarch)->builtin_int32; |
c906108c | 1043 | else if (size == 'g') |
df4df182 | 1044 | val_type = builtin_type (next_gdbarch)->builtin_int64; |
c906108c | 1045 | |
9a22f0d0 PM |
1046 | if (format == 's') |
1047 | { | |
1048 | struct type *char_type = NULL; | |
ad3bbd48 | 1049 | |
9a22f0d0 PM |
1050 | /* Search for "char16_t" or "char32_t" types or fall back to 8-bit char |
1051 | if type is not found. */ | |
1052 | if (size == 'h') | |
1053 | char_type = builtin_type (next_gdbarch)->builtin_char16; | |
1054 | else if (size == 'w') | |
1055 | char_type = builtin_type (next_gdbarch)->builtin_char32; | |
1056 | if (char_type) | |
dda83cd7 | 1057 | val_type = char_type; |
9a22f0d0 | 1058 | else |
dda83cd7 | 1059 | { |
9a22f0d0 | 1060 | if (size != '\0' && size != 'b') |
0df8b418 MS |
1061 | warning (_("Unable to display strings with " |
1062 | "size '%c', using 'b' instead."), size); | |
9a22f0d0 PM |
1063 | size = 'b'; |
1064 | val_type = builtin_type (next_gdbarch)->builtin_int8; | |
dda83cd7 | 1065 | } |
9a22f0d0 PM |
1066 | } |
1067 | ||
c906108c SS |
1068 | maxelts = 8; |
1069 | if (size == 'w') | |
1070 | maxelts = 4; | |
1071 | if (size == 'g') | |
1072 | maxelts = 2; | |
1073 | if (format == 's' || format == 'i') | |
1074 | maxelts = 1; | |
1075 | ||
79a45b7d TT |
1076 | get_formatted_print_options (&opts, format); |
1077 | ||
bb556f1f TK |
1078 | if (count < 0) |
1079 | { | |
1080 | /* This is the negative repeat count case. | |
dda83cd7 SM |
1081 | We rewind the address based on the given repeat count and format, |
1082 | then examine memory from there in forward direction. */ | |
bb556f1f TK |
1083 | |
1084 | count = -count; | |
1085 | if (format == 'i') | |
dda83cd7 SM |
1086 | { |
1087 | next_address = find_instruction_backward (gdbarch, addr, count, | |
1088 | &count); | |
1089 | } | |
bb556f1f | 1090 | else if (format == 's') |
dda83cd7 SM |
1091 | { |
1092 | next_address = find_string_backward (gdbarch, addr, count, | |
df86565b | 1093 | val_type->length (), |
dda83cd7 SM |
1094 | &opts, &count); |
1095 | } | |
bb556f1f | 1096 | else |
dda83cd7 | 1097 | { |
df86565b | 1098 | next_address = addr - count * val_type->length (); |
dda83cd7 | 1099 | } |
bb556f1f TK |
1100 | |
1101 | /* The following call to print_formatted updates next_address in every | |
dda83cd7 SM |
1102 | iteration. In backward case, we store the start address here |
1103 | and update next_address with it before exiting the function. */ | |
bb556f1f | 1104 | addr_rewound = (format == 's' |
df86565b | 1105 | ? next_address - val_type->length () |
dda83cd7 | 1106 | : next_address); |
bb556f1f TK |
1107 | need_to_update_next_address = 1; |
1108 | } | |
1109 | ||
bef382e6 LM |
1110 | /* Whether we need to print the memory tag information for the current |
1111 | address range. */ | |
1112 | bool print_range_tag = true; | |
1113 | uint32_t gsize = gdbarch_memtag_granule_size (gdbarch); | |
1114 | ||
c906108c SS |
1115 | /* Print as many objects as specified in COUNT, at most maxelts per line, |
1116 | with the address of the next one at the start of each line. */ | |
1117 | ||
1118 | while (count > 0) | |
1119 | { | |
1120 | QUIT; | |
bef382e6 LM |
1121 | |
1122 | CORE_ADDR tag_laddr = 0, tag_haddr = 0; | |
1123 | ||
1124 | /* Print the memory tag information if requested. */ | |
1125 | if (fmt.print_tags && print_range_tag | |
1126 | && target_supports_memory_tagging ()) | |
1127 | { | |
1128 | tag_laddr = align_down (next_address, gsize); | |
1129 | tag_haddr = align_down (next_address + gsize, gsize); | |
1130 | ||
1131 | struct value *v_addr | |
1132 | = value_from_ulongest (builtin_type (gdbarch)->builtin_data_ptr, | |
1133 | tag_laddr); | |
1134 | ||
a0e28bb1 | 1135 | if (gdbarch_tagged_address_p (gdbarch, v_addr)) |
bef382e6 LM |
1136 | { |
1137 | /* Fetch the allocation tag. */ | |
1138 | struct value *tag | |
1139 | = gdbarch_get_memtag (gdbarch, v_addr, memtag_type::allocation); | |
1140 | std::string atag | |
1141 | = gdbarch_memtag_to_string (gdbarch, tag); | |
1142 | ||
1143 | if (!atag.empty ()) | |
1144 | { | |
6cb06a8c TT |
1145 | gdb_printf (_("<Allocation Tag %s for range [%s,%s)>\n"), |
1146 | atag.c_str (), | |
1147 | paddress (gdbarch, tag_laddr), | |
1148 | paddress (gdbarch, tag_haddr)); | |
bef382e6 LM |
1149 | } |
1150 | } | |
1151 | print_range_tag = false; | |
1152 | } | |
1153 | ||
2b28d209 | 1154 | if (format == 'i') |
0426ad51 | 1155 | gdb_puts (pc_prefix (next_address)); |
5af949e3 | 1156 | print_address (next_gdbarch, next_address, gdb_stdout); |
6cb06a8c | 1157 | gdb_printf (":"); |
c906108c SS |
1158 | for (i = maxelts; |
1159 | i > 0 && count > 0; | |
1160 | i--, count--) | |
1161 | { | |
6cb06a8c | 1162 | gdb_printf ("\t"); |
c906108c SS |
1163 | /* Note that print_formatted sets next_address for the next |
1164 | object. */ | |
1165 | last_examine_address = next_address; | |
1166 | ||
c906108c | 1167 | /* The value to be displayed is not fetched greedily. |
5d51a2db MR |
1168 | Instead, to avoid the possibility of a fetched value not |
1169 | being used, its retrieval is delayed until the print code | |
c5aa993b JM |
1170 | uses it. When examining an instruction stream, the |
1171 | disassembler will perform its own memory fetch using just | |
1172 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
1173 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
1174 | is left with the byte sequence from the last complete | |
0df8b418 | 1175 | instruction fetched from memory? */ |
9b558729 TT |
1176 | last_examine_value |
1177 | = release_value (value_at_lazy (val_type, next_address)); | |
c906108c | 1178 | |
9b558729 | 1179 | print_formatted (last_examine_value.get (), size, &opts, gdb_stdout); |
a4642986 MR |
1180 | |
1181 | /* Display any branch delay slots following the final insn. */ | |
1182 | if (format == 'i' && count == 1) | |
1183 | count += branch_delay_insns; | |
bef382e6 LM |
1184 | |
1185 | /* Update the tag range based on the current address being | |
1186 | processed. */ | |
1187 | if (tag_haddr <= next_address) | |
1188 | print_range_tag = true; | |
c906108c | 1189 | } |
6cb06a8c | 1190 | gdb_printf ("\n"); |
c906108c | 1191 | } |
bb556f1f TK |
1192 | |
1193 | if (need_to_update_next_address) | |
1194 | next_address = addr_rewound; | |
c906108c SS |
1195 | } |
1196 | \f | |
1197 | static void | |
8d89f51a | 1198 | validate_format (struct format_data fmt, const char *cmdname) |
c906108c SS |
1199 | { |
1200 | if (fmt.size != 0) | |
8a3fe4f8 | 1201 | error (_("Size letters are meaningless in \"%s\" command."), cmdname); |
c906108c | 1202 | if (fmt.count != 1) |
8a3fe4f8 | 1203 | error (_("Item count other than 1 is meaningless in \"%s\" command."), |
c906108c | 1204 | cmdname); |
ea37ba09 | 1205 | if (fmt.format == 'i') |
8a3fe4f8 | 1206 | error (_("Format letter \"%c\" is meaningless in \"%s\" command."), |
c906108c SS |
1207 | fmt.format, cmdname); |
1208 | } | |
1209 | ||
7d8062de | 1210 | /* Parse print command format string into *OPTS and update *EXPP. |
1c88ceb1 JK |
1211 | CMDNAME should name the current command. */ |
1212 | ||
1213 | void | |
1214 | print_command_parse_format (const char **expp, const char *cmdname, | |
7d8062de | 1215 | value_print_options *opts) |
1c88ceb1 JK |
1216 | { |
1217 | const char *exp = *expp; | |
1218 | ||
d8edc8b7 PW |
1219 | /* opts->raw value might already have been set by 'set print raw-values' |
1220 | or by using 'print -raw-values'. | |
1221 | So, do not set opts->raw to 0, only set it to 1 if /r is given. */ | |
1c88ceb1 JK |
1222 | if (exp && *exp == '/') |
1223 | { | |
7d8062de PA |
1224 | format_data fmt; |
1225 | ||
1c88ceb1 | 1226 | exp++; |
7d8062de PA |
1227 | fmt = decode_format (&exp, last_format, 0); |
1228 | validate_format (fmt, cmdname); | |
1229 | last_format = fmt.format; | |
1230 | ||
1231 | opts->format = fmt.format; | |
d8edc8b7 | 1232 | opts->raw = opts->raw || fmt.raw; |
1c88ceb1 JK |
1233 | } |
1234 | else | |
1235 | { | |
7d8062de | 1236 | opts->format = 0; |
1c88ceb1 JK |
1237 | } |
1238 | ||
1239 | *expp = exp; | |
1240 | } | |
1241 | ||
7d8062de | 1242 | /* See valprint.h. */ |
1c88ceb1 JK |
1243 | |
1244 | void | |
7d8062de | 1245 | print_value (value *val, const value_print_options &opts) |
1c88ceb1 | 1246 | { |
a0c07915 AB |
1247 | /* This setting allows large arrays to be printed by limiting the |
1248 | number of elements that are loaded into GDB's memory; we only | |
1249 | need to load as many array elements as we plan to print. */ | |
1250 | scoped_array_length_limiting limit_large_arrays (opts.print_max); | |
1251 | ||
0d0f488e | 1252 | int histindex = val->record_latest (); |
1c88ceb1 | 1253 | |
d0c97917 | 1254 | annotate_value_history_begin (histindex, val->type ()); |
1c88ceb1 | 1255 | |
e2c04ee0 TT |
1256 | std::string idx = string_printf ("$%d", histindex); |
1257 | gdb_printf ("%ps = ", styled_string (variable_name_style.style (), | |
1258 | idx.c_str ())); | |
1c88ceb1 JK |
1259 | |
1260 | annotate_value_history_value (); | |
1261 | ||
7d8062de | 1262 | print_formatted (val, 0, &opts, gdb_stdout); |
6cb06a8c | 1263 | gdb_printf ("\n"); |
1c88ceb1 JK |
1264 | |
1265 | annotate_value_history_end (); | |
1266 | } | |
1267 | ||
bef382e6 LM |
1268 | /* Returns true if memory tags should be validated. False otherwise. */ |
1269 | ||
1270 | static bool | |
1271 | should_validate_memtags (struct value *value) | |
1272 | { | |
d0c97917 | 1273 | gdb_assert (value != nullptr && value->type () != nullptr); |
bef382e6 | 1274 | |
05558223 LM |
1275 | if (!target_supports_memory_tagging ()) |
1276 | return false; | |
bef382e6 | 1277 | |
d0c97917 | 1278 | enum type_code code = value->type ()->code (); |
05558223 LM |
1279 | |
1280 | /* Skip non-address values. */ | |
1281 | if (code != TYPE_CODE_PTR | |
d0c97917 | 1282 | && !TYPE_IS_REFERENCE (value->type ())) |
05558223 LM |
1283 | return false; |
1284 | ||
1285 | /* OK, we have an address value. Check we have a complete value we | |
1286 | can extract. */ | |
d00664db TT |
1287 | if (value->optimized_out () |
1288 | || !value->entirely_available ()) | |
05558223 LM |
1289 | return false; |
1290 | ||
1291 | /* We do. Check whether it includes any tags. */ | |
99d9c3b9 | 1292 | return gdbarch_tagged_address_p (current_inferior ()->arch (), value); |
bef382e6 LM |
1293 | } |
1294 | ||
48136e00 | 1295 | /* Helper for parsing arguments for print_command_1. */ |
c906108c | 1296 | |
48136e00 LM |
1297 | static struct value * |
1298 | process_print_command_args (const char *args, value_print_options *print_opts, | |
1299 | bool voidprint) | |
c906108c | 1300 | { |
48136e00 | 1301 | get_user_print_options (print_opts); |
7d8062de | 1302 | /* Override global settings with explicit options, if any. */ |
48136e00 | 1303 | auto group = make_value_print_options_def_group (print_opts); |
7d8062de PA |
1304 | gdb::option::process_options |
1305 | (&args, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group); | |
1306 | ||
48136e00 | 1307 | print_command_parse_format (&args, "print", print_opts); |
c906108c | 1308 | |
7d8062de | 1309 | const char *exp = args; |
c906108c | 1310 | |
7d8062de | 1311 | if (exp != nullptr && *exp) |
c906108c | 1312 | { |
a0c07915 AB |
1313 | /* This setting allows large arrays to be printed by limiting the |
1314 | number of elements that are loaded into GDB's memory; we only | |
1315 | need to load as many array elements as we plan to print. */ | |
1316 | scoped_array_length_limiting limit_large_arrays (print_opts->print_max); | |
1317 | ||
8fc48b79 TT |
1318 | /* VOIDPRINT is true to indicate that we do want to print a void |
1319 | value, so invert it for parse_expression. */ | |
b8c03634 TT |
1320 | parser_flags flags = 0; |
1321 | if (!voidprint) | |
1322 | flags = PARSER_VOID_CONTEXT; | |
1323 | expression_up expr = parse_expression (exp, nullptr, flags); | |
43048e46 | 1324 | return expr->evaluate (); |
c906108c | 1325 | } |
48136e00 LM |
1326 | |
1327 | return access_value_history (0); | |
1328 | } | |
1329 | ||
1330 | /* Implementation of the "print" and "call" commands. */ | |
1331 | ||
1332 | static void | |
1333 | print_command_1 (const char *args, int voidprint) | |
1334 | { | |
1335 | value_print_options print_opts; | |
1336 | ||
1337 | struct value *val = process_print_command_args (args, &print_opts, voidprint); | |
c906108c | 1338 | |
d0c97917 TT |
1339 | if (voidprint || (val && val->type () && |
1340 | val->type ()->code () != TYPE_CODE_VOID)) | |
bef382e6 LM |
1341 | { |
1342 | /* If memory tagging validation is on, check if the tag is valid. */ | |
05558223 | 1343 | if (print_opts.memory_tag_violations) |
bef382e6 | 1344 | { |
05558223 LM |
1345 | try |
1346 | { | |
99d9c3b9 SM |
1347 | gdbarch *arch = current_inferior ()->arch (); |
1348 | ||
05558223 | 1349 | if (should_validate_memtags (val) |
99d9c3b9 | 1350 | && !gdbarch_memtag_matches_p (arch, val)) |
05558223 LM |
1351 | { |
1352 | /* Fetch the logical tag. */ | |
1353 | struct value *tag | |
99d9c3b9 SM |
1354 | = gdbarch_get_memtag (arch, val, memtag_type::logical); |
1355 | std::string ltag = gdbarch_memtag_to_string (arch, tag); | |
05558223 LM |
1356 | |
1357 | /* Fetch the allocation tag. */ | |
99d9c3b9 | 1358 | tag = gdbarch_get_memtag (arch, val, |
05558223 | 1359 | memtag_type::allocation); |
99d9c3b9 | 1360 | std::string atag = gdbarch_memtag_to_string (arch, tag); |
05558223 | 1361 | |
6cb06a8c TT |
1362 | gdb_printf (_("Logical tag (%s) does not match the " |
1363 | "allocation tag (%s).\n"), | |
1364 | ltag.c_str (), atag.c_str ()); | |
05558223 LM |
1365 | } |
1366 | } | |
1367 | catch (gdb_exception_error &ex) | |
1368 | { | |
1369 | if (ex.error == TARGET_CLOSE_ERROR) | |
1370 | throw; | |
1371 | ||
6cb06a8c TT |
1372 | gdb_printf (gdb_stderr, |
1373 | _("Could not validate memory tag: %s\n"), | |
1374 | ex.message->c_str ()); | |
05558223 | 1375 | } |
bef382e6 | 1376 | } |
05558223 | 1377 | |
bef382e6 LM |
1378 | print_value (val, print_opts); |
1379 | } | |
7d8062de PA |
1380 | } |
1381 | ||
1382 | /* See valprint.h. */ | |
1383 | ||
1384 | void | |
1385 | print_command_completer (struct cmd_list_element *ignore, | |
1386 | completion_tracker &tracker, | |
1387 | const char *text, const char * /*word*/) | |
1388 | { | |
1389 | const auto group = make_value_print_options_def_group (nullptr); | |
1390 | if (gdb::option::complete_options | |
1391 | (tracker, &text, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group)) | |
1392 | return; | |
1393 | ||
037d7135 AB |
1394 | if (skip_over_slash_fmt (tracker, &text)) |
1395 | return; | |
1396 | ||
7d8062de PA |
1397 | const char *word = advance_to_expression_complete_word_point (tracker, text); |
1398 | expression_completer (ignore, tracker, text, word); | |
c906108c SS |
1399 | } |
1400 | ||
c906108c | 1401 | static void |
0b39b52e | 1402 | print_command (const char *exp, int from_tty) |
c906108c | 1403 | { |
8fc48b79 | 1404 | print_command_1 (exp, true); |
c906108c SS |
1405 | } |
1406 | ||
675dcf4f | 1407 | /* Same as print, except it doesn't print void results. */ |
c906108c | 1408 | static void |
0b39b52e | 1409 | call_command (const char *exp, int from_tty) |
c906108c | 1410 | { |
8fc48b79 | 1411 | print_command_1 (exp, false); |
c906108c SS |
1412 | } |
1413 | ||
6f937416 PA |
1414 | /* Implementation of the "output" command. */ |
1415 | ||
6f937416 | 1416 | void |
122b53ea | 1417 | output_command (const char *exp, int from_tty) |
c906108c | 1418 | { |
52f0bd74 | 1419 | char format = 0; |
3d6d86c6 | 1420 | struct value *val; |
c906108c | 1421 | struct format_data fmt; |
79a45b7d | 1422 | struct value_print_options opts; |
c906108c | 1423 | |
777ea8f1 | 1424 | fmt.size = 0; |
a6bac58e | 1425 | fmt.raw = 0; |
777ea8f1 | 1426 | |
c906108c SS |
1427 | if (exp && *exp == '/') |
1428 | { | |
1429 | exp++; | |
1430 | fmt = decode_format (&exp, 0, 0); | |
1431 | validate_format (fmt, "output"); | |
1432 | format = fmt.format; | |
1433 | } | |
1434 | ||
4d01a485 | 1435 | expression_up expr = parse_expression (exp); |
c906108c | 1436 | |
43048e46 | 1437 | val = expr->evaluate (); |
c906108c | 1438 | |
d0c97917 | 1439 | annotate_value_begin (val->type ()); |
c906108c | 1440 | |
79a45b7d | 1441 | get_formatted_print_options (&opts, format); |
a6bac58e | 1442 | opts.raw = fmt.raw; |
a0c07915 AB |
1443 | |
1444 | /* This setting allows large arrays to be printed by limiting the | |
1445 | number of elements that are loaded into GDB's memory; we only | |
1446 | need to load as many array elements as we plan to print. */ | |
1447 | scoped_array_length_limiting limit_large_arrays (opts.print_max); | |
1448 | ||
79a45b7d | 1449 | print_formatted (val, fmt.size, &opts, gdb_stdout); |
c906108c SS |
1450 | |
1451 | annotate_value_end (); | |
1452 | ||
2acceee2 | 1453 | gdb_flush (gdb_stdout); |
c906108c SS |
1454 | } |
1455 | ||
c906108c | 1456 | static void |
981a3fb3 | 1457 | set_command (const char *exp, int from_tty) |
c906108c | 1458 | { |
4d01a485 | 1459 | expression_up expr = parse_expression (exp); |
ad3bbd48 | 1460 | |
d654ad96 | 1461 | switch (expr->first_opcode ()) |
3dd93bf8 TT |
1462 | { |
1463 | case UNOP_PREINCREMENT: | |
1464 | case UNOP_POSTINCREMENT: | |
1465 | case UNOP_PREDECREMENT: | |
1466 | case UNOP_POSTDECREMENT: | |
1467 | case BINOP_ASSIGN: | |
1468 | case BINOP_ASSIGN_MODIFY: | |
1469 | case BINOP_COMMA: | |
1470 | break; | |
1471 | default: | |
1472 | warning | |
1473 | (_("Expression is not an assignment (and might have no effect)")); | |
1474 | } | |
52b3699b | 1475 | |
43048e46 | 1476 | expr->evaluate (); |
c906108c SS |
1477 | } |
1478 | ||
c906108c | 1479 | static void |
1d12d88f | 1480 | info_symbol_command (const char *arg, int from_tty) |
c906108c SS |
1481 | { |
1482 | struct minimal_symbol *msymbol; | |
c5aa993b JM |
1483 | CORE_ADDR addr, sect_addr; |
1484 | int matches = 0; | |
1485 | unsigned int offset; | |
c906108c SS |
1486 | |
1487 | if (!arg) | |
e2e0b3e5 | 1488 | error_no_arg (_("address")); |
c906108c SS |
1489 | |
1490 | addr = parse_and_eval_address (arg); | |
2030c079 | 1491 | for (objfile *objfile : current_program_space->objfiles ()) |
5250cbc8 | 1492 | for (obj_section *osect : objfile->sections ()) |
c5aa993b | 1493 | { |
3b9d3ac2 TT |
1494 | /* Only process each object file once, even if there's a separate |
1495 | debug file. */ | |
1496 | if (objfile->separate_debug_objfile_backlink) | |
1497 | continue; | |
1498 | ||
1499 | sect_addr = overlay_mapped_address (addr, osect); | |
1500 | ||
94a75b03 | 1501 | if (osect->contains (sect_addr) |
3b9d3ac2 TT |
1502 | && (msymbol |
1503 | = lookup_minimal_symbol_by_pc_section (sect_addr, | |
1504 | osect).minsym)) | |
5178ed48 | 1505 | { |
3b9d3ac2 TT |
1506 | const char *obj_name, *mapped, *sec_name, *msym_name; |
1507 | const char *loc_string; | |
1508 | ||
1509 | matches = 1; | |
4aeddc50 | 1510 | offset = sect_addr - msymbol->value_address (objfile); |
3b9d3ac2 TT |
1511 | mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped"); |
1512 | sec_name = osect->the_bfd_section->name; | |
c9d95fa3 | 1513 | msym_name = msymbol->print_name (); |
3b9d3ac2 TT |
1514 | |
1515 | /* Don't print the offset if it is zero. | |
1516 | We assume there's no need to handle i18n of "sym + offset". */ | |
1517 | std::string string_holder; | |
1518 | if (offset) | |
1519 | { | |
1520 | string_holder = string_printf ("%s + %u", msym_name, offset); | |
1521 | loc_string = string_holder.c_str (); | |
1522 | } | |
c14c28ba | 1523 | else |
3b9d3ac2 TT |
1524 | loc_string = msym_name; |
1525 | ||
1526 | gdb_assert (osect->objfile && objfile_name (osect->objfile)); | |
1527 | obj_name = objfile_name (osect->objfile); | |
1528 | ||
deeafabb | 1529 | if (current_program_space->multi_objfile_p ()) |
3b9d3ac2 TT |
1530 | if (pc_in_unmapped_range (addr, osect)) |
1531 | if (section_is_overlay (osect)) | |
6cb06a8c TT |
1532 | gdb_printf (_("%s in load address range of " |
1533 | "%s overlay section %s of %s\n"), | |
1534 | loc_string, mapped, sec_name, obj_name); | |
3b9d3ac2 | 1535 | else |
6cb06a8c TT |
1536 | gdb_printf (_("%s in load address range of " |
1537 | "section %s of %s\n"), | |
1538 | loc_string, sec_name, obj_name); | |
3b9d3ac2 TT |
1539 | else |
1540 | if (section_is_overlay (osect)) | |
6cb06a8c TT |
1541 | gdb_printf (_("%s in %s overlay section %s of %s\n"), |
1542 | loc_string, mapped, sec_name, obj_name); | |
3b9d3ac2 | 1543 | else |
6cb06a8c TT |
1544 | gdb_printf (_("%s in section %s of %s\n"), |
1545 | loc_string, sec_name, obj_name); | |
c14c28ba | 1546 | else |
3b9d3ac2 TT |
1547 | if (pc_in_unmapped_range (addr, osect)) |
1548 | if (section_is_overlay (osect)) | |
6cb06a8c TT |
1549 | gdb_printf (_("%s in load address range of %s overlay " |
1550 | "section %s\n"), | |
1551 | loc_string, mapped, sec_name); | |
3b9d3ac2 | 1552 | else |
6cb06a8c | 1553 | gdb_printf |
3b9d3ac2 TT |
1554 | (_("%s in load address range of section %s\n"), |
1555 | loc_string, sec_name); | |
1556 | else | |
1557 | if (section_is_overlay (osect)) | |
6cb06a8c TT |
1558 | gdb_printf (_("%s in %s overlay section %s\n"), |
1559 | loc_string, mapped, sec_name); | |
3b9d3ac2 | 1560 | else |
6cb06a8c TT |
1561 | gdb_printf (_("%s in section %s\n"), |
1562 | loc_string, sec_name); | |
3b9d3ac2 | 1563 | } |
c5aa993b | 1564 | } |
c906108c | 1565 | if (matches == 0) |
6cb06a8c | 1566 | gdb_printf (_("No symbol matches %s.\n"), arg); |
c906108c SS |
1567 | } |
1568 | ||
c906108c | 1569 | static void |
1d12d88f | 1570 | info_address_command (const char *exp, int from_tty) |
c906108c | 1571 | { |
768a979c UW |
1572 | struct gdbarch *gdbarch; |
1573 | int regno; | |
52f0bd74 | 1574 | struct symbol *sym; |
7c7b6655 | 1575 | struct bound_minimal_symbol msymbol; |
52f0bd74 | 1576 | long val; |
714835d5 | 1577 | struct obj_section *section; |
08922a10 | 1578 | CORE_ADDR load_addr, context_pc = 0; |
1993b719 | 1579 | struct field_of_this_result is_a_field_of_this; |
c906108c SS |
1580 | |
1581 | if (exp == 0) | |
8a3fe4f8 | 1582 | error (_("Argument required.")); |
c906108c | 1583 | |
ccf41c24 | 1584 | sym = lookup_symbol (exp, get_selected_block (&context_pc), SEARCH_VFT, |
d12307c1 | 1585 | &is_a_field_of_this).symbol; |
c906108c SS |
1586 | if (sym == NULL) |
1587 | { | |
1993b719 | 1588 | if (is_a_field_of_this.type != NULL) |
c906108c | 1589 | { |
6cb06a8c | 1590 | gdb_printf ("Symbol \""); |
bed009b9 TT |
1591 | fprintf_symbol (gdb_stdout, exp, |
1592 | current_language->la_language, DMGL_ANSI); | |
6cb06a8c | 1593 | gdb_printf ("\" is a field of the local class variable "); |
e2b23ee9 | 1594 | if (current_language->la_language == language_objc) |
6cb06a8c | 1595 | gdb_printf ("`self'\n"); /* ObjC equivalent of "this" */ |
e2b23ee9 | 1596 | else |
6cb06a8c | 1597 | gdb_printf ("`this'\n"); |
c906108c SS |
1598 | return; |
1599 | } | |
1600 | ||
7c7b6655 | 1601 | msymbol = lookup_bound_minimal_symbol (exp); |
c906108c | 1602 | |
7c7b6655 | 1603 | if (msymbol.minsym != NULL) |
c906108c | 1604 | { |
7c7b6655 | 1605 | struct objfile *objfile = msymbol.objfile; |
e27d198c | 1606 | |
08feed99 | 1607 | gdbarch = objfile->arch (); |
4aeddc50 | 1608 | load_addr = msymbol.value_address (); |
c906108c | 1609 | |
6cb06a8c | 1610 | gdb_printf ("Symbol \""); |
bed009b9 TT |
1611 | fprintf_symbol (gdb_stdout, exp, |
1612 | current_language->la_language, DMGL_ANSI); | |
6cb06a8c | 1613 | gdb_printf ("\" is at "); |
35fb8261 TT |
1614 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1615 | gdb_stdout); | |
6cb06a8c | 1616 | gdb_printf (" in a file compiled without debugging"); |
ebbc3a7d | 1617 | section = msymbol.minsym->obj_section (objfile); |
c906108c SS |
1618 | if (section_is_overlay (section)) |
1619 | { | |
1620 | load_addr = overlay_unmapped_address (load_addr, section); | |
6cb06a8c | 1621 | gdb_printf (",\n -- loaded at "); |
35fb8261 TT |
1622 | fputs_styled (paddress (gdbarch, load_addr), |
1623 | address_style.style (), | |
1624 | gdb_stdout); | |
6cb06a8c TT |
1625 | gdb_printf (" in overlay section %s", |
1626 | section->the_bfd_section->name); | |
c906108c | 1627 | } |
6cb06a8c | 1628 | gdb_printf (".\n"); |
c906108c SS |
1629 | } |
1630 | else | |
8a3fe4f8 | 1631 | error (_("No symbol \"%s\" in current context."), exp); |
c906108c SS |
1632 | return; |
1633 | } | |
1634 | ||
6cb06a8c | 1635 | gdb_printf ("Symbol \""); |
0426ad51 | 1636 | gdb_puts (sym->print_name ()); |
6cb06a8c | 1637 | gdb_printf ("\" is "); |
4aeddc50 | 1638 | val = sym->value_longest (); |
7b3ecc75 | 1639 | if (sym->is_objfile_owned ()) |
e19b2d94 | 1640 | section = sym->obj_section (sym->objfile ()); |
1994afbf DE |
1641 | else |
1642 | section = NULL; | |
bcd6845e | 1643 | gdbarch = sym->arch (); |
c906108c | 1644 | |
7ae24327 SM |
1645 | if (const symbol_computed_ops *computed_ops = sym->computed_ops (); |
1646 | computed_ops != nullptr) | |
24d6c2a0 | 1647 | { |
7ae24327 | 1648 | computed_ops->describe_location (sym, context_pc, gdb_stdout); |
6cb06a8c | 1649 | gdb_printf (".\n"); |
24d6c2a0 TT |
1650 | return; |
1651 | } | |
1652 | ||
66d7f48f | 1653 | switch (sym->aclass ()) |
c906108c SS |
1654 | { |
1655 | case LOC_CONST: | |
1656 | case LOC_CONST_BYTES: | |
6cb06a8c | 1657 | gdb_printf ("constant"); |
c906108c SS |
1658 | break; |
1659 | ||
1660 | case LOC_LABEL: | |
6cb06a8c | 1661 | gdb_printf ("a label at address "); |
4aeddc50 | 1662 | load_addr = sym->value_address (); |
35fb8261 TT |
1663 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1664 | gdb_stdout); | |
c906108c SS |
1665 | if (section_is_overlay (section)) |
1666 | { | |
1667 | load_addr = overlay_unmapped_address (load_addr, section); | |
6cb06a8c | 1668 | gdb_printf (",\n -- loaded at "); |
35fb8261 TT |
1669 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1670 | gdb_stdout); | |
6cb06a8c TT |
1671 | gdb_printf (" in overlay section %s", |
1672 | section->the_bfd_section->name); | |
c906108c SS |
1673 | } |
1674 | break; | |
1675 | ||
4c2df51b | 1676 | case LOC_COMPUTED: |
557b4d76 | 1677 | gdb_assert_not_reached ("LOC_COMPUTED variable missing a method"); |
4c2df51b | 1678 | |
c906108c | 1679 | case LOC_REGISTER: |
768a979c UW |
1680 | /* GDBARCH is the architecture associated with the objfile the symbol |
1681 | is defined in; the target architecture may be different, and may | |
1682 | provide additional registers. However, we do not know the target | |
1683 | architecture at this point. We assume the objfile architecture | |
1684 | will contain all the standard registers that occur in debug info | |
1685 | in that objfile. */ | |
7ae24327 | 1686 | regno = sym->register_ops ()->register_number (sym, gdbarch); |
768a979c | 1687 | |
d9743061 | 1688 | if (sym->is_argument ()) |
6cb06a8c TT |
1689 | gdb_printf (_("an argument in register %s"), |
1690 | gdbarch_register_name (gdbarch, regno)); | |
2a2d4dc3 | 1691 | else |
6cb06a8c TT |
1692 | gdb_printf (_("a variable in register %s"), |
1693 | gdbarch_register_name (gdbarch, regno)); | |
c906108c SS |
1694 | break; |
1695 | ||
1696 | case LOC_STATIC: | |
6cb06a8c | 1697 | gdb_printf (_("static storage at address ")); |
4aeddc50 | 1698 | load_addr = sym->value_address (); |
35fb8261 TT |
1699 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1700 | gdb_stdout); | |
c906108c SS |
1701 | if (section_is_overlay (section)) |
1702 | { | |
1703 | load_addr = overlay_unmapped_address (load_addr, section); | |
6cb06a8c | 1704 | gdb_printf (_(",\n -- loaded at ")); |
35fb8261 TT |
1705 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1706 | gdb_stdout); | |
6cb06a8c TT |
1707 | gdb_printf (_(" in overlay section %s"), |
1708 | section->the_bfd_section->name); | |
c906108c SS |
1709 | } |
1710 | break; | |
1711 | ||
c906108c | 1712 | case LOC_REGPARM_ADDR: |
768a979c | 1713 | /* Note comment at LOC_REGISTER. */ |
7ae24327 | 1714 | regno = sym->register_ops ()->register_number (sym, gdbarch); |
6cb06a8c TT |
1715 | gdb_printf (_("address of an argument in register %s"), |
1716 | gdbarch_register_name (gdbarch, regno)); | |
c906108c SS |
1717 | break; |
1718 | ||
1719 | case LOC_ARG: | |
6cb06a8c | 1720 | gdb_printf (_("an argument at offset %ld"), val); |
c906108c SS |
1721 | break; |
1722 | ||
c906108c | 1723 | case LOC_LOCAL: |
6cb06a8c | 1724 | gdb_printf (_("a local variable at frame offset %ld"), val); |
c906108c SS |
1725 | break; |
1726 | ||
1727 | case LOC_REF_ARG: | |
6cb06a8c | 1728 | gdb_printf (_("a reference argument at offset %ld"), val); |
c906108c SS |
1729 | break; |
1730 | ||
c906108c | 1731 | case LOC_TYPEDEF: |
6cb06a8c | 1732 | gdb_printf (_("a typedef")); |
c906108c SS |
1733 | break; |
1734 | ||
1735 | case LOC_BLOCK: | |
6cb06a8c | 1736 | gdb_printf (_("a function at address ")); |
6395b628 | 1737 | load_addr = sym->value_block ()->entry_pc (); |
35fb8261 TT |
1738 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1739 | gdb_stdout); | |
c906108c SS |
1740 | if (section_is_overlay (section)) |
1741 | { | |
1742 | load_addr = overlay_unmapped_address (load_addr, section); | |
6cb06a8c | 1743 | gdb_printf (_(",\n -- loaded at ")); |
35fb8261 TT |
1744 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1745 | gdb_stdout); | |
6cb06a8c TT |
1746 | gdb_printf (_(" in overlay section %s"), |
1747 | section->the_bfd_section->name); | |
c906108c SS |
1748 | } |
1749 | break; | |
1750 | ||
1751 | case LOC_UNRESOLVED: | |
1752 | { | |
e27d198c | 1753 | struct bound_minimal_symbol msym; |
c906108c | 1754 | |
987012b8 | 1755 | msym = lookup_bound_minimal_symbol (sym->linkage_name ()); |
e27d198c | 1756 | if (msym.minsym == NULL) |
6cb06a8c | 1757 | gdb_printf ("unresolved"); |
c906108c SS |
1758 | else |
1759 | { | |
1db66e34 | 1760 | section = msym.obj_section (); |
e0740f77 JK |
1761 | |
1762 | if (section | |
1763 | && (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0) | |
5382cfab | 1764 | { |
93d50cd8 | 1765 | load_addr = CORE_ADDR (msym.minsym->unrelocated_address ()); |
6cb06a8c TT |
1766 | gdb_printf (_("a thread-local variable at offset %s " |
1767 | "in the thread-local storage for `%s'"), | |
1768 | paddress (gdbarch, load_addr), | |
1769 | objfile_name (section->objfile)); | |
5382cfab | 1770 | } |
e0740f77 | 1771 | else |
c906108c | 1772 | { |
4aeddc50 | 1773 | load_addr = msym.value_address (); |
6cb06a8c | 1774 | gdb_printf (_("static storage at address ")); |
35fb8261 TT |
1775 | fputs_styled (paddress (gdbarch, load_addr), |
1776 | address_style.style (), gdb_stdout); | |
e0740f77 JK |
1777 | if (section_is_overlay (section)) |
1778 | { | |
1779 | load_addr = overlay_unmapped_address (load_addr, section); | |
6cb06a8c | 1780 | gdb_printf (_(",\n -- loaded at ")); |
35fb8261 TT |
1781 | fputs_styled (paddress (gdbarch, load_addr), |
1782 | address_style.style (), | |
1783 | gdb_stdout); | |
6cb06a8c TT |
1784 | gdb_printf (_(" in overlay section %s"), |
1785 | section->the_bfd_section->name); | |
e0740f77 | 1786 | } |
c906108c SS |
1787 | } |
1788 | } | |
1789 | } | |
1790 | break; | |
1791 | ||
c906108c | 1792 | case LOC_OPTIMIZED_OUT: |
6cb06a8c | 1793 | gdb_printf (_("optimized out")); |
c906108c | 1794 | break; |
c5aa993b | 1795 | |
c906108c | 1796 | default: |
6cb06a8c | 1797 | gdb_printf (_("of unknown (botched) type")); |
c906108c SS |
1798 | break; |
1799 | } | |
6cb06a8c | 1800 | gdb_printf (".\n"); |
c906108c SS |
1801 | } |
1802 | \f | |
675dcf4f MK |
1803 | |
1804 | static void | |
0b39b52e | 1805 | x_command (const char *exp, int from_tty) |
c906108c | 1806 | { |
c906108c | 1807 | struct format_data fmt; |
c906108c SS |
1808 | struct value *val; |
1809 | ||
a6bac58e | 1810 | fmt.format = last_format ? last_format : 'x'; |
bef382e6 | 1811 | fmt.print_tags = last_print_tags; |
c906108c SS |
1812 | fmt.size = last_size; |
1813 | fmt.count = 1; | |
a6bac58e | 1814 | fmt.raw = 0; |
c906108c | 1815 | |
9be2ae8f TT |
1816 | /* If there is no expression and no format, use the most recent |
1817 | count. */ | |
1818 | if (exp == nullptr && last_count > 0) | |
1819 | fmt.count = last_count; | |
1820 | ||
c906108c SS |
1821 | if (exp && *exp == '/') |
1822 | { | |
6f937416 PA |
1823 | const char *tmp = exp + 1; |
1824 | ||
1825 | fmt = decode_format (&tmp, last_format, last_size); | |
1826 | exp = (char *) tmp; | |
c906108c SS |
1827 | } |
1828 | ||
9be2ae8f TT |
1829 | last_count = fmt.count; |
1830 | ||
c906108c SS |
1831 | /* If we have an expression, evaluate it and use it as the address. */ |
1832 | ||
1833 | if (exp != 0 && *exp != 0) | |
1834 | { | |
4d01a485 | 1835 | expression_up expr = parse_expression (exp); |
675dcf4f | 1836 | /* Cause expression not to be there any more if this command is |
dda83cd7 SM |
1837 | repeated with Newline. But don't clobber a user-defined |
1838 | command's definition. */ | |
c906108c | 1839 | if (from_tty) |
85c4be7c | 1840 | set_repeat_arguments (""); |
43048e46 | 1841 | val = expr->evaluate (); |
d0c97917 | 1842 | if (TYPE_IS_REFERENCE (val->type ())) |
e1c34c5d | 1843 | val = coerce_ref (val); |
c906108c | 1844 | /* In rvalue contexts, such as this, functions are coerced into |
dda83cd7 | 1845 | pointers to functions. This makes "x/i main" work. */ |
d0c97917 | 1846 | if (val->type ()->code () == TYPE_CODE_FUNC |
736355f2 | 1847 | && val->lval () == lval_memory) |
9feb2d07 | 1848 | next_address = val->address (); |
c906108c | 1849 | else |
1aa20aa8 | 1850 | next_address = value_as_address (val); |
5d3729b5 UW |
1851 | |
1852 | next_gdbarch = expr->gdbarch; | |
c906108c SS |
1853 | } |
1854 | ||
5d3729b5 UW |
1855 | if (!next_gdbarch) |
1856 | error_no_arg (_("starting display address")); | |
1857 | ||
1858 | do_examine (fmt, next_gdbarch, next_address); | |
c906108c | 1859 | |
675dcf4f | 1860 | /* If the examine succeeds, we remember its size and format for next |
9a22f0d0 PM |
1861 | time. Set last_size to 'b' for strings. */ |
1862 | if (fmt.format == 's') | |
1863 | last_size = 'b'; | |
1864 | else | |
1865 | last_size = fmt.size; | |
c906108c SS |
1866 | last_format = fmt.format; |
1867 | ||
bef382e6 LM |
1868 | /* Remember tag-printing setting. */ |
1869 | last_print_tags = fmt.print_tags; | |
1870 | ||
0df8b418 | 1871 | /* Set a couple of internal variables if appropriate. */ |
9b558729 | 1872 | if (last_examine_value != nullptr) |
c906108c SS |
1873 | { |
1874 | /* Make last address examined available to the user as $_. Use | |
dda83cd7 | 1875 | the correct pointer type. */ |
4478b372 | 1876 | struct type *pointer_type |
f28085df | 1877 | = lookup_pointer_type (last_examine_value->type ()); |
c906108c | 1878 | set_internalvar (lookup_internalvar ("_"), |
4478b372 JB |
1879 | value_from_pointer (pointer_type, |
1880 | last_examine_address)); | |
c5aa993b | 1881 | |
675dcf4f MK |
1882 | /* Make contents of last address examined available to the user |
1883 | as $__. If the last value has not been fetched from memory | |
1884 | then don't fetch it now; instead mark it by voiding the $__ | |
1885 | variable. */ | |
f28085df | 1886 | if (last_examine_value->lazy ()) |
4fa62494 | 1887 | clear_internalvar (lookup_internalvar ("__")); |
c906108c | 1888 | else |
9b558729 | 1889 | set_internalvar (lookup_internalvar ("__"), last_examine_value.get ()); |
c906108c SS |
1890 | } |
1891 | } | |
037d7135 AB |
1892 | |
1893 | /* Command completion for the 'display' and 'x' commands. */ | |
1894 | ||
1895 | static void | |
1896 | display_and_x_command_completer (struct cmd_list_element *ignore, | |
1897 | completion_tracker &tracker, | |
1898 | const char *text, const char * /*word*/) | |
1899 | { | |
1900 | if (skip_over_slash_fmt (tracker, &text)) | |
1901 | return; | |
1902 | ||
1903 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
1904 | expression_completer (ignore, tracker, text, word); | |
1905 | } | |
1906 | ||
c906108c | 1907 | \f |
c5aa993b | 1908 | |
c906108c SS |
1909 | /* Add an expression to the auto-display chain. |
1910 | Specify the expression. */ | |
1911 | ||
1912 | static void | |
0b39b52e | 1913 | display_command (const char *arg, int from_tty) |
c906108c SS |
1914 | { |
1915 | struct format_data fmt; | |
fe978cb0 | 1916 | struct display *newobj; |
6f937416 | 1917 | const char *exp = arg; |
c906108c | 1918 | |
7bd0be3a | 1919 | if (exp == 0) |
c906108c | 1920 | { |
7bd0be3a AB |
1921 | do_displays (); |
1922 | return; | |
1923 | } | |
c906108c | 1924 | |
7bd0be3a AB |
1925 | if (*exp == '/') |
1926 | { | |
1927 | exp++; | |
1928 | fmt = decode_format (&exp, 0, 0); | |
1929 | if (fmt.size && fmt.format == 0) | |
1930 | fmt.format = 'x'; | |
1931 | if (fmt.format == 'i' || fmt.format == 's') | |
1932 | fmt.size = 'b'; | |
1933 | } | |
1934 | else | |
1935 | { | |
1936 | fmt.format = 0; | |
1937 | fmt.size = 0; | |
1938 | fmt.count = 0; | |
1939 | fmt.raw = 0; | |
1940 | } | |
c906108c | 1941 | |
699bd4cf TT |
1942 | innermost_block_tracker tracker; |
1943 | expression_up expr = parse_expression (exp, &tracker); | |
c906108c | 1944 | |
8be4b118 TT |
1945 | newobj = new display (exp, std::move (expr), fmt, |
1946 | current_program_space, tracker.block ()); | |
1947 | all_displays.emplace_back (newobj); | |
c906108c | 1948 | |
7bd0be3a AB |
1949 | if (from_tty) |
1950 | do_one_display (newobj); | |
c906108c | 1951 | |
7bd0be3a | 1952 | dont_repeat (); |
c906108c SS |
1953 | } |
1954 | ||
675dcf4f MK |
1955 | /* Clear out the display_chain. Done when new symtabs are loaded, |
1956 | since this invalidates the types stored in many expressions. */ | |
c906108c SS |
1957 | |
1958 | void | |
8be4b118 | 1959 | clear_displays () |
c906108c | 1960 | { |
8be4b118 | 1961 | all_displays.clear (); |
c906108c SS |
1962 | } |
1963 | ||
3c3fe74c | 1964 | /* Delete the auto-display DISPLAY. */ |
c906108c SS |
1965 | |
1966 | static void | |
3c3fe74c | 1967 | delete_display (struct display *display) |
c906108c | 1968 | { |
3c3fe74c | 1969 | gdb_assert (display != NULL); |
c906108c | 1970 | |
8be4b118 TT |
1971 | auto iter = std::find_if (all_displays.begin (), |
1972 | all_displays.end (), | |
1973 | [=] (const std::unique_ptr<struct display> &item) | |
1974 | { | |
1975 | return item.get () == display; | |
1976 | }); | |
1977 | gdb_assert (iter != all_displays.end ()); | |
1978 | all_displays.erase (iter); | |
c906108c SS |
1979 | } |
1980 | ||
c9174737 PA |
1981 | /* Call FUNCTION on each of the displays whose numbers are given in |
1982 | ARGS. DATA is passed unmodified to FUNCTION. */ | |
c906108c SS |
1983 | |
1984 | static void | |
77763700 | 1985 | map_display_numbers (const char *args, |
8be4b118 | 1986 | gdb::function_view<void (struct display *)> function) |
c906108c | 1987 | { |
c9174737 | 1988 | int num; |
c906108c | 1989 | |
c9174737 PA |
1990 | if (args == NULL) |
1991 | error_no_arg (_("one or more display numbers")); | |
c906108c | 1992 | |
bfd28288 | 1993 | number_or_range_parser parser (args); |
c9174737 | 1994 | |
bfd28288 | 1995 | while (!parser.finished ()) |
c906108c | 1996 | { |
bfd28288 | 1997 | const char *p = parser.cur_tok (); |
c906108c | 1998 | |
bfd28288 | 1999 | num = parser.get_number (); |
3c3fe74c PA |
2000 | if (num == 0) |
2001 | warning (_("bad display number at or near '%s'"), p); | |
2002 | else | |
2003 | { | |
8be4b118 TT |
2004 | auto iter = std::find_if (all_displays.begin (), |
2005 | all_displays.end (), | |
2006 | [=] (const std::unique_ptr<display> &item) | |
2007 | { | |
2008 | return item->number == num; | |
2009 | }); | |
2010 | if (iter == all_displays.end ()) | |
6cb06a8c | 2011 | gdb_printf (_("No display number %d.\n"), num); |
3c3fe74c | 2012 | else |
8be4b118 | 2013 | function (iter->get ()); |
3c3fe74c | 2014 | } |
c906108c | 2015 | } |
c9174737 PA |
2016 | } |
2017 | ||
c9174737 PA |
2018 | /* "undisplay" command. */ |
2019 | ||
2020 | static void | |
77763700 | 2021 | undisplay_command (const char *args, int from_tty) |
c9174737 | 2022 | { |
c9174737 PA |
2023 | if (args == NULL) |
2024 | { | |
2025 | if (query (_("Delete all auto-display expressions? "))) | |
2026 | clear_displays (); | |
2027 | dont_repeat (); | |
2028 | return; | |
2029 | } | |
2030 | ||
8be4b118 | 2031 | map_display_numbers (args, delete_display); |
c906108c SS |
2032 | dont_repeat (); |
2033 | } | |
2034 | ||
2035 | /* Display a single auto-display. | |
2036 | Do nothing if the display cannot be printed in the current context, | |
0df8b418 | 2037 | or if the display is disabled. */ |
c906108c SS |
2038 | |
2039 | static void | |
fba45db2 | 2040 | do_one_display (struct display *d) |
c906108c SS |
2041 | { |
2042 | int within_current_scope; | |
2043 | ||
8be4b118 | 2044 | if (!d->enabled_p) |
c906108c SS |
2045 | return; |
2046 | ||
704e9165 UW |
2047 | /* The expression carries the architecture that was used at parse time. |
2048 | This is a problem if the expression depends on architecture features | |
2049 | (e.g. register numbers), and the current architecture is now different. | |
2050 | For example, a display statement like "display/i $pc" is expected to | |
2051 | display the PC register of the current architecture, not the arch at | |
2052 | the time the display command was given. Therefore, we re-parse the | |
2053 | expression if the current architecture has changed. */ | |
2054 | if (d->exp != NULL && d->exp->gdbarch != get_current_arch ()) | |
2055 | { | |
4d01a485 | 2056 | d->exp.reset (); |
704e9165 UW |
2057 | d->block = NULL; |
2058 | } | |
2059 | ||
a3247a22 PP |
2060 | if (d->exp == NULL) |
2061 | { | |
ad3bbd48 | 2062 | |
a70b8144 | 2063 | try |
a3247a22 | 2064 | { |
699bd4cf | 2065 | innermost_block_tracker tracker; |
8be4b118 | 2066 | d->exp = parse_expression (d->exp_string.c_str (), &tracker); |
699bd4cf | 2067 | d->block = tracker.block (); |
a3247a22 | 2068 | } |
b1ffd112 | 2069 | catch (const gdb_exception_error &ex) |
a3247a22 PP |
2070 | { |
2071 | /* Can't re-parse the expression. Disable this display item. */ | |
8be4b118 | 2072 | d->enabled_p = false; |
a3247a22 | 2073 | warning (_("Unable to display \"%s\": %s"), |
8be4b118 | 2074 | d->exp_string.c_str (), ex.what ()); |
a3247a22 PP |
2075 | return; |
2076 | } | |
2077 | } | |
2078 | ||
c906108c | 2079 | if (d->block) |
6c95b8df PA |
2080 | { |
2081 | if (d->pspace == current_program_space) | |
0d191295 TT |
2082 | within_current_scope = d->block->contains (get_selected_block (0), |
2083 | true); | |
6c95b8df PA |
2084 | else |
2085 | within_current_scope = 0; | |
2086 | } | |
c906108c SS |
2087 | else |
2088 | within_current_scope = 1; | |
2089 | if (!within_current_scope) | |
2090 | return; | |
2091 | ||
b7b633e9 TT |
2092 | scoped_restore save_display_number |
2093 | = make_scoped_restore (¤t_display_number, d->number); | |
c906108c SS |
2094 | |
2095 | annotate_display_begin (); | |
6cb06a8c | 2096 | gdb_printf ("%d", d->number); |
c906108c | 2097 | annotate_display_number_end (); |
6cb06a8c | 2098 | gdb_printf (": "); |
c906108c SS |
2099 | if (d->format.size) |
2100 | { | |
c906108c SS |
2101 | |
2102 | annotate_display_format (); | |
2103 | ||
6cb06a8c | 2104 | gdb_printf ("x/"); |
c906108c | 2105 | if (d->format.count != 1) |
6cb06a8c TT |
2106 | gdb_printf ("%d", d->format.count); |
2107 | gdb_printf ("%c", d->format.format); | |
c906108c | 2108 | if (d->format.format != 'i' && d->format.format != 's') |
6cb06a8c TT |
2109 | gdb_printf ("%c", d->format.size); |
2110 | gdb_printf (" "); | |
c906108c SS |
2111 | |
2112 | annotate_display_expression (); | |
2113 | ||
0426ad51 | 2114 | gdb_puts (d->exp_string.c_str ()); |
c906108c SS |
2115 | annotate_display_expression_end (); |
2116 | ||
6a2eb474 | 2117 | if (d->format.count != 1 || d->format.format == 'i') |
6cb06a8c | 2118 | gdb_printf ("\n"); |
c906108c | 2119 | else |
6cb06a8c | 2120 | gdb_printf (" "); |
c5aa993b | 2121 | |
c906108c SS |
2122 | annotate_display_value (); |
2123 | ||
a70b8144 | 2124 | try |
dda83cd7 | 2125 | { |
9d8fa392 PA |
2126 | struct value *val; |
2127 | CORE_ADDR addr; | |
2128 | ||
43048e46 | 2129 | val = d->exp->evaluate (); |
9d8fa392 PA |
2130 | addr = value_as_address (val); |
2131 | if (d->format.format == 'i') | |
2132 | addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr); | |
2133 | do_examine (d->format, d->exp->gdbarch, addr); | |
2134 | } | |
230d2906 | 2135 | catch (const gdb_exception_error &ex) |
492d29ea | 2136 | { |
6cb06a8c TT |
2137 | gdb_printf (_("%p[<error: %s>%p]\n"), |
2138 | metadata_style.style ().ptr (), ex.what (), | |
2139 | nullptr); | |
492d29ea | 2140 | } |
c906108c SS |
2141 | } |
2142 | else | |
2143 | { | |
79a45b7d TT |
2144 | struct value_print_options opts; |
2145 | ||
c906108c SS |
2146 | annotate_display_format (); |
2147 | ||
2148 | if (d->format.format) | |
6cb06a8c | 2149 | gdb_printf ("/%c ", d->format.format); |
c906108c SS |
2150 | |
2151 | annotate_display_expression (); | |
2152 | ||
0426ad51 | 2153 | gdb_puts (d->exp_string.c_str ()); |
c906108c SS |
2154 | annotate_display_expression_end (); |
2155 | ||
6cb06a8c | 2156 | gdb_printf (" = "); |
c906108c SS |
2157 | |
2158 | annotate_display_expression (); | |
2159 | ||
79a45b7d | 2160 | get_formatted_print_options (&opts, d->format.format); |
a6bac58e | 2161 | opts.raw = d->format.raw; |
9d8fa392 | 2162 | |
a70b8144 | 2163 | try |
dda83cd7 | 2164 | { |
9d8fa392 PA |
2165 | struct value *val; |
2166 | ||
43048e46 | 2167 | val = d->exp->evaluate (); |
9d8fa392 PA |
2168 | print_formatted (val, d->format.size, &opts, gdb_stdout); |
2169 | } | |
230d2906 | 2170 | catch (const gdb_exception_error &ex) |
492d29ea | 2171 | { |
7f6aba03 TT |
2172 | fprintf_styled (gdb_stdout, metadata_style.style (), |
2173 | _("<error: %s>"), ex.what ()); | |
492d29ea | 2174 | } |
492d29ea | 2175 | |
6cb06a8c | 2176 | gdb_printf ("\n"); |
c906108c SS |
2177 | } |
2178 | ||
2179 | annotate_display_end (); | |
2180 | ||
2181 | gdb_flush (gdb_stdout); | |
c906108c SS |
2182 | } |
2183 | ||
2184 | /* Display all of the values on the auto-display chain which can be | |
2185 | evaluated in the current scope. */ | |
2186 | ||
2187 | void | |
fba45db2 | 2188 | do_displays (void) |
c906108c | 2189 | { |
8be4b118 TT |
2190 | for (auto &d : all_displays) |
2191 | do_one_display (d.get ()); | |
c906108c SS |
2192 | } |
2193 | ||
2194 | /* Delete the auto-display which we were in the process of displaying. | |
2195 | This is done when there is an error or a signal. */ | |
2196 | ||
2197 | void | |
fba45db2 | 2198 | disable_display (int num) |
c906108c | 2199 | { |
8be4b118 | 2200 | for (auto &d : all_displays) |
c906108c SS |
2201 | if (d->number == num) |
2202 | { | |
8be4b118 | 2203 | d->enabled_p = false; |
c906108c SS |
2204 | return; |
2205 | } | |
6cb06a8c | 2206 | gdb_printf (_("No display number %d.\n"), num); |
c906108c | 2207 | } |
c5aa993b | 2208 | |
c906108c | 2209 | void |
fba45db2 | 2210 | disable_current_display (void) |
c906108c SS |
2211 | { |
2212 | if (current_display_number >= 0) | |
2213 | { | |
2214 | disable_display (current_display_number); | |
6cb06a8c TT |
2215 | gdb_printf (gdb_stderr, |
2216 | _("Disabling display %d to " | |
2217 | "avoid infinite recursion.\n"), | |
2218 | current_display_number); | |
c906108c SS |
2219 | } |
2220 | current_display_number = -1; | |
2221 | } | |
2222 | ||
2223 | static void | |
1d12d88f | 2224 | info_display_command (const char *ignore, int from_tty) |
c906108c | 2225 | { |
8be4b118 | 2226 | if (all_displays.empty ()) |
6cb06a8c | 2227 | gdb_printf (_("There are no auto-display expressions now.\n")); |
c906108c | 2228 | else |
6cb06a8c | 2229 | gdb_printf (_("Auto-display expressions now in effect:\n\ |
a3f17187 | 2230 | Num Enb Expression\n")); |
c906108c | 2231 | |
8be4b118 | 2232 | for (auto &d : all_displays) |
c906108c | 2233 | { |
6cb06a8c | 2234 | gdb_printf ("%d: %c ", d->number, "ny"[(int) d->enabled_p]); |
c906108c | 2235 | if (d->format.size) |
6cb06a8c TT |
2236 | gdb_printf ("/%d%c%c ", d->format.count, d->format.size, |
2237 | d->format.format); | |
c906108c | 2238 | else if (d->format.format) |
6cb06a8c | 2239 | gdb_printf ("/%c ", d->format.format); |
0426ad51 | 2240 | gdb_puts (d->exp_string.c_str ()); |
0d191295 | 2241 | if (d->block && !d->block->contains (get_selected_block (0), true)) |
6cb06a8c TT |
2242 | gdb_printf (_(" (cannot be evaluated in the current context)")); |
2243 | gdb_printf ("\n"); | |
c906108c SS |
2244 | } |
2245 | } | |
2246 | ||
85102364 | 2247 | /* Implementation of both the "disable display" and "enable display" |
c9174737 PA |
2248 | commands. ENABLE decides what to do. */ |
2249 | ||
2250 | static void | |
8be4b118 | 2251 | enable_disable_display_command (const char *args, int from_tty, bool enable) |
c9174737 PA |
2252 | { |
2253 | if (args == NULL) | |
c906108c | 2254 | { |
8be4b118 | 2255 | for (auto &d : all_displays) |
c9174737 PA |
2256 | d->enabled_p = enable; |
2257 | return; | |
2258 | } | |
c5aa993b | 2259 | |
8be4b118 TT |
2260 | map_display_numbers (args, |
2261 | [=] (struct display *d) | |
2262 | { | |
2263 | d->enabled_p = enable; | |
2264 | }); | |
c906108c SS |
2265 | } |
2266 | ||
c9174737 PA |
2267 | /* The "enable display" command. */ |
2268 | ||
c906108c | 2269 | static void |
77763700 | 2270 | enable_display_command (const char *args, int from_tty) |
c906108c | 2271 | { |
8be4b118 | 2272 | enable_disable_display_command (args, from_tty, true); |
c9174737 | 2273 | } |
c5aa993b | 2274 | |
c9174737 | 2275 | /* The "disable display" command. */ |
c906108c | 2276 | |
c9174737 | 2277 | static void |
77763700 | 2278 | disable_display_command (const char *args, int from_tty) |
c9174737 | 2279 | { |
8be4b118 | 2280 | enable_disable_display_command (args, from_tty, false); |
c906108c | 2281 | } |
a3247a22 | 2282 | |
a3247a22 PP |
2283 | /* display_chain items point to blocks and expressions. Some expressions in |
2284 | turn may point to symbols. | |
2285 | Both symbols and blocks are obstack_alloc'd on objfile_stack, and are | |
2286 | obstack_free'd when a shared library is unloaded. | |
2287 | Clear pointers that are about to become dangling. | |
2288 | Both .exp and .block fields will be restored next time we need to display | |
2289 | an item by re-parsing .exp_string field in the new execution context. */ | |
2290 | ||
2291 | static void | |
63644780 | 2292 | clear_dangling_display_expressions (struct objfile *objfile) |
a3247a22 | 2293 | { |
e0322c6a | 2294 | program_space *pspace = objfile->pspace; |
c0201579 | 2295 | if (objfile->separate_debug_objfile_backlink) |
63644780 NB |
2296 | { |
2297 | objfile = objfile->separate_debug_objfile_backlink; | |
2298 | gdb_assert (objfile->pspace == pspace); | |
2299 | } | |
c0201579 | 2300 | |
8be4b118 | 2301 | for (auto &d : all_displays) |
a3247a22 | 2302 | { |
63644780 | 2303 | if (d->pspace != pspace) |
c0201579 JK |
2304 | continue; |
2305 | ||
d6bc0792 TT |
2306 | struct objfile *bl_objf = nullptr; |
2307 | if (d->block != nullptr) | |
2308 | { | |
46baa3c6 | 2309 | bl_objf = d->block->objfile (); |
d6bc0792 TT |
2310 | if (bl_objf->separate_debug_objfile_backlink != nullptr) |
2311 | bl_objf = bl_objf->separate_debug_objfile_backlink; | |
2312 | } | |
2313 | ||
2314 | if (bl_objf == objfile | |
aa9bd445 | 2315 | || (d->exp != nullptr && d->exp->uses_objfile (objfile))) |
d6bc0792 TT |
2316 | { |
2317 | d->exp.reset (); | |
2318 | d->block = NULL; | |
2319 | } | |
a3247a22 PP |
2320 | } |
2321 | } | |
c906108c | 2322 | \f |
c5aa993b | 2323 | |
675dcf4f | 2324 | /* Print the value in stack frame FRAME of a variable specified by a |
aad95b57 TT |
2325 | struct symbol. NAME is the name to print; if NULL then VAR's print |
2326 | name will be used. STREAM is the ui_file on which to print the | |
2327 | value. INDENT specifies the number of indent levels to print | |
1f9e9ea5 | 2328 | before printing the variable name. */ |
c906108c SS |
2329 | |
2330 | void | |
aad95b57 | 2331 | print_variable_and_value (const char *name, struct symbol *var, |
8480a37e | 2332 | const frame_info_ptr &frame, |
aad95b57 | 2333 | struct ui_file *stream, int indent) |
c906108c | 2334 | { |
c906108c | 2335 | |
aad95b57 | 2336 | if (!name) |
987012b8 | 2337 | name = var->print_name (); |
aad95b57 | 2338 | |
6cb06a8c TT |
2339 | gdb_printf (stream, "%*s%ps = ", 2 * indent, "", |
2340 | styled_string (variable_name_style.style (), name)); | |
80ae2043 | 2341 | |
a70b8144 | 2342 | try |
0f6a939d PM |
2343 | { |
2344 | struct value *val; | |
2345 | struct value_print_options opts; | |
aad95b57 | 2346 | |
63e43d3a PMR |
2347 | /* READ_VAR_VALUE needs a block in order to deal with non-local |
2348 | references (i.e. to handle nested functions). In this context, we | |
2349 | print variables that are local to this frame, so we can avoid passing | |
2350 | a block to it. */ | |
2351 | val = read_var_value (var, NULL, frame); | |
0f6a939d | 2352 | get_user_print_options (&opts); |
dad6b350 | 2353 | opts.deref_ref = true; |
644a2e75 | 2354 | common_val_print_checked (val, stream, indent, &opts, current_language); |
0f6a939d | 2355 | } |
230d2906 | 2356 | catch (const gdb_exception_error &except) |
492d29ea | 2357 | { |
7f6aba03 TT |
2358 | fprintf_styled (stream, metadata_style.style (), |
2359 | "<error reading variable %s (%s)>", name, | |
2360 | except.what ()); | |
492d29ea | 2361 | } |
492d29ea | 2362 | |
6cb06a8c | 2363 | gdb_printf (stream, "\n"); |
c906108c SS |
2364 | } |
2365 | ||
c2792f5a DE |
2366 | /* Subroutine of ui_printf to simplify it. |
2367 | Print VALUE to STREAM using FORMAT. | |
1f6f6e21 PW |
2368 | VALUE is a C-style string either on the target or |
2369 | in a GDB internal variable. */ | |
c2792f5a DE |
2370 | |
2371 | static void | |
2372 | printf_c_string (struct ui_file *stream, const char *format, | |
2373 | struct value *value) | |
2374 | { | |
1a36815e | 2375 | gdb::byte_vector str; |
c2792f5a | 2376 | |
1956da78 KS |
2377 | if (((value->type ()->code () != TYPE_CODE_PTR && value->lval () == lval_internalvar) |
2378 | || value->type ()->code () == TYPE_CODE_ARRAY) | |
d0c97917 | 2379 | && c_is_string_type_p (value->type ())) |
3ae9ce5d | 2380 | { |
d0c97917 | 2381 | size_t len = value->type ()->length (); |
c2792f5a | 2382 | |
1f6f6e21 PW |
2383 | /* Copy the internal var value to TEM_STR and append a terminating null |
2384 | character. This protects against corrupted C-style strings that lack | |
2385 | the terminating null char. It also allows Ada-style strings (not | |
2386 | null terminated) to be printed without problems. */ | |
1a36815e | 2387 | str.resize (len + 1); |
c2792f5a | 2388 | |
1a36815e AB |
2389 | memcpy (str.data (), value->contents ().data (), len); |
2390 | str [len] = 0; | |
c2792f5a | 2391 | } |
1f6f6e21 PW |
2392 | else |
2393 | { | |
2394 | CORE_ADDR tem = value_as_address (value);; | |
2395 | ||
2396 | if (tem == 0) | |
2397 | { | |
2398 | DIAGNOSTIC_PUSH | |
2399 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
6cb06a8c | 2400 | gdb_printf (stream, format, "(null)"); |
1f6f6e21 PW |
2401 | DIAGNOSTIC_POP |
2402 | return; | |
2403 | } | |
2404 | ||
1a36815e AB |
2405 | /* This is a %s argument. Build the string in STR which is |
2406 | currently empty. */ | |
2407 | gdb_assert (str.size () == 0); | |
13f5f57e AB |
2408 | size_t len; |
2409 | for (len = 0;; len++) | |
1f6f6e21 PW |
2410 | { |
2411 | gdb_byte c; | |
c2792f5a | 2412 | |
1f6f6e21 | 2413 | QUIT; |
13f5f57e | 2414 | |
1f6f6e21 | 2415 | read_memory (tem + len, &c, 1); |
13f5f57e AB |
2416 | if (!exceeds_max_value_size (len + 1)) |
2417 | str.push_back (c); | |
1f6f6e21 PW |
2418 | if (c == 0) |
2419 | break; | |
2420 | } | |
2421 | ||
13f5f57e AB |
2422 | if (exceeds_max_value_size (len + 1)) |
2423 | error (_("printed string requires %s bytes, which is more than " | |
2424 | "max-value-size"), plongest (len + 1)); | |
2425 | ||
1a36815e AB |
2426 | /* We will have passed through the above loop at least once, and will |
2427 | only exit the loop when we have pushed a zero byte onto the end of | |
2428 | STR. */ | |
2429 | gdb_assert (str.size () > 0); | |
2430 | gdb_assert (str.back () == 0); | |
1f6f6e21 | 2431 | } |
c2792f5a | 2432 | |
af39b1c2 SM |
2433 | DIAGNOSTIC_PUSH |
2434 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
1a36815e | 2435 | gdb_printf (stream, format, (char *) str.data ()); |
af39b1c2 | 2436 | DIAGNOSTIC_POP |
c2792f5a DE |
2437 | } |
2438 | ||
2439 | /* Subroutine of ui_printf to simplify it. | |
2440 | Print VALUE to STREAM using FORMAT. | |
1f6f6e21 PW |
2441 | VALUE is a wide C-style string on the target or |
2442 | in a GDB internal variable. */ | |
c2792f5a DE |
2443 | |
2444 | static void | |
2445 | printf_wide_c_string (struct ui_file *stream, const char *format, | |
2446 | struct value *value) | |
2447 | { | |
1f6f6e21 PW |
2448 | const gdb_byte *str; |
2449 | size_t len; | |
d0c97917 | 2450 | struct gdbarch *gdbarch = value->type ()->arch (); |
b858499d | 2451 | struct type *wctype = lookup_typename (current_language, |
c2792f5a | 2452 | "wchar_t", NULL, 0); |
df86565b | 2453 | int wcwidth = wctype->length (); |
6b09f134 | 2454 | std::optional<gdb::byte_vector> tem_str; |
c2792f5a | 2455 | |
736355f2 | 2456 | if (value->lval () == lval_internalvar |
d0c97917 | 2457 | && c_is_string_type_p (value->type ())) |
3ae9ce5d | 2458 | { |
efaf1ae0 | 2459 | str = value->contents ().data (); |
d0c97917 | 2460 | len = value->type ()->length (); |
3ae9ce5d | 2461 | } |
1f6f6e21 | 2462 | else |
c2792f5a | 2463 | { |
1f6f6e21 | 2464 | CORE_ADDR tem = value_as_address (value); |
c2792f5a | 2465 | |
1f6f6e21 PW |
2466 | if (tem == 0) |
2467 | { | |
2468 | DIAGNOSTIC_PUSH | |
2469 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
6cb06a8c | 2470 | gdb_printf (stream, format, "(null)"); |
1f6f6e21 PW |
2471 | DIAGNOSTIC_POP |
2472 | return; | |
2473 | } | |
2474 | ||
2475 | /* This is a %s argument. Find the length of the string. */ | |
2476 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1a36815e | 2477 | tem_str.emplace (); |
1f6f6e21 PW |
2478 | |
2479 | for (len = 0;; len += wcwidth) | |
2480 | { | |
2481 | QUIT; | |
13f5f57e AB |
2482 | gdb_byte *dst; |
2483 | if (!exceeds_max_value_size (len + wcwidth)) | |
2484 | { | |
2485 | tem_str->resize (tem_str->size () + wcwidth); | |
2486 | dst = tem_str->data () + len; | |
2487 | } | |
2488 | else | |
2489 | { | |
2490 | /* We still need to check for the null-character, so we need | |
2491 | somewhere to place the data read from the inferior. We | |
2492 | can't keep growing TEM_STR, it's gotten too big, so | |
2493 | instead just read the new character into the start of | |
2494 | TEMS_STR. This will corrupt the previously read contents, | |
2495 | but we're not going to print this string anyway, we just | |
2496 | want to know how big it would have been so we can tell the | |
2497 | user in the error message (see below). | |
2498 | ||
2499 | And we know there will be space in this buffer so long as | |
2500 | WCWIDTH is smaller than our LONGEST type, the | |
2501 | max-value-size can't be smaller than a LONGEST. */ | |
2502 | dst = tem_str->data (); | |
2503 | } | |
1a36815e AB |
2504 | read_memory (tem + len, dst, wcwidth); |
2505 | if (extract_unsigned_integer (dst, wcwidth, byte_order) == 0) | |
1f6f6e21 PW |
2506 | break; |
2507 | } | |
2508 | ||
13f5f57e AB |
2509 | if (exceeds_max_value_size (len + wcwidth)) |
2510 | error (_("printed string requires %s bytes, which is more than " | |
2511 | "max-value-size"), plongest (len + wcwidth)); | |
2512 | ||
1a36815e | 2513 | str = tem_str->data (); |
1f6f6e21 | 2514 | } |
c2792f5a | 2515 | |
8268c778 | 2516 | auto_obstack output; |
c2792f5a DE |
2517 | |
2518 | convert_between_encodings (target_wide_charset (gdbarch), | |
2519 | host_charset (), | |
1f6f6e21 | 2520 | str, len, wcwidth, |
c2792f5a DE |
2521 | &output, translit_char); |
2522 | obstack_grow_str0 (&output, ""); | |
2523 | ||
af39b1c2 SM |
2524 | DIAGNOSTIC_PUSH |
2525 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
6cb06a8c | 2526 | gdb_printf (stream, format, obstack_base (&output)); |
af39b1c2 | 2527 | DIAGNOSTIC_POP |
c2792f5a DE |
2528 | } |
2529 | ||
2530 | /* Subroutine of ui_printf to simplify it. | |
16e812b2 | 2531 | Print VALUE, a floating point value, to STREAM using FORMAT. */ |
c2792f5a DE |
2532 | |
2533 | static void | |
16e812b2 UW |
2534 | printf_floating (struct ui_file *stream, const char *format, |
2535 | struct value *value, enum argclass argclass) | |
c2792f5a | 2536 | { |
c2792f5a | 2537 | /* Parameter data. */ |
d0c97917 | 2538 | struct type *param_type = value->type (); |
8ee511af | 2539 | struct gdbarch *gdbarch = param_type->arch (); |
c2792f5a | 2540 | |
16e812b2 UW |
2541 | /* Determine target type corresponding to the format string. */ |
2542 | struct type *fmt_type; | |
2543 | switch (argclass) | |
c2792f5a | 2544 | { |
16e812b2 UW |
2545 | case double_arg: |
2546 | fmt_type = builtin_type (gdbarch)->builtin_double; | |
2547 | break; | |
2548 | case long_double_arg: | |
2549 | fmt_type = builtin_type (gdbarch)->builtin_long_double; | |
2550 | break; | |
2551 | case dec32float_arg: | |
2552 | fmt_type = builtin_type (gdbarch)->builtin_decfloat; | |
2553 | break; | |
2554 | case dec64float_arg: | |
2555 | fmt_type = builtin_type (gdbarch)->builtin_decdouble; | |
2556 | break; | |
2557 | case dec128float_arg: | |
2558 | fmt_type = builtin_type (gdbarch)->builtin_declong; | |
2559 | break; | |
2560 | default: | |
2561 | gdb_assert_not_reached ("unexpected argument class"); | |
c2792f5a DE |
2562 | } |
2563 | ||
16e812b2 UW |
2564 | /* To match the traditional GDB behavior, the conversion is |
2565 | done differently depending on the type of the parameter: | |
2566 | ||
2567 | - if the parameter has floating-point type, it's value | |
2568 | is converted to the target type; | |
2569 | ||
2570 | - otherwise, if the parameter has a type that is of the | |
2571 | same size as a built-in floating-point type, the value | |
2572 | bytes are interpreted as if they were of that type, and | |
2573 | then converted to the target type (this is not done for | |
2574 | decimal floating-point argument classes); | |
2575 | ||
2576 | - otherwise, if the source value has an integer value, | |
2577 | it's value is converted to the target type; | |
c2792f5a | 2578 | |
16e812b2 | 2579 | - otherwise, an error is raised. |
c2792f5a | 2580 | |
16e812b2 UW |
2581 | In either case, the result of the conversion is a byte buffer |
2582 | formatted in the target format for the target type. */ | |
2583 | ||
78134374 | 2584 | if (fmt_type->code () == TYPE_CODE_FLT) |
16e812b2 UW |
2585 | { |
2586 | param_type = float_type_from_length (param_type); | |
d0c97917 | 2587 | if (param_type != value->type ()) |
50888e42 | 2588 | value = value_from_contents (param_type, |
efaf1ae0 | 2589 | value->contents ().data ()); |
16e812b2 UW |
2590 | } |
2591 | ||
2592 | value = value_cast (fmt_type, value); | |
c2792f5a | 2593 | |
3b4b2f16 | 2594 | /* Convert the value to a string and print it. */ |
f69fdf9b | 2595 | std::string str |
efaf1ae0 | 2596 | = target_float_to_string (value->contents ().data (), fmt_type, format); |
0426ad51 | 2597 | gdb_puts (str.c_str (), stream); |
c2792f5a DE |
2598 | } |
2599 | ||
2600 | /* Subroutine of ui_printf to simplify it. | |
2601 | Print VALUE, a target pointer, to STREAM using FORMAT. */ | |
2602 | ||
2603 | static void | |
2604 | printf_pointer (struct ui_file *stream, const char *format, | |
2605 | struct value *value) | |
2606 | { | |
2607 | /* We avoid the host's %p because pointers are too | |
2608 | likely to be the wrong size. The only interesting | |
2609 | modifier for %p is a width; extract that, and then | |
2610 | handle %p as glibc would: %#x or a literal "(nil)". */ | |
2611 | ||
c2792f5a DE |
2612 | #ifdef PRINTF_HAS_LONG_LONG |
2613 | long long val = value_as_long (value); | |
2614 | #else | |
2615 | long val = value_as_long (value); | |
2616 | #endif | |
2617 | ||
7d870865 AB |
2618 | /* Build the new output format in FMT. */ |
2619 | std::string fmt; | |
c2792f5a DE |
2620 | |
2621 | /* Copy up to the leading %. */ | |
7d870865 | 2622 | const char *p = format; |
c2792f5a DE |
2623 | while (*p) |
2624 | { | |
2625 | int is_percent = (*p == '%'); | |
2626 | ||
7d870865 | 2627 | fmt.push_back (*p++); |
c2792f5a DE |
2628 | if (is_percent) |
2629 | { | |
2630 | if (*p == '%') | |
7d870865 | 2631 | fmt.push_back (*p++); |
c2792f5a DE |
2632 | else |
2633 | break; | |
2634 | } | |
2635 | } | |
2636 | ||
2637 | if (val != 0) | |
7d870865 | 2638 | fmt.push_back ('#'); |
c2792f5a | 2639 | |
b8c2339b TT |
2640 | /* Copy any width or flags. Only the "-" flag is valid for pointers |
2641 | -- see the format_pieces constructor. */ | |
2642 | while (*p == '-' || (*p >= '0' && *p < '9')) | |
7d870865 | 2643 | fmt.push_back (*p++); |
c2792f5a DE |
2644 | |
2645 | gdb_assert (*p == 'p' && *(p + 1) == '\0'); | |
2646 | if (val != 0) | |
2647 | { | |
2648 | #ifdef PRINTF_HAS_LONG_LONG | |
7d870865 | 2649 | fmt.push_back ('l'); |
c2792f5a | 2650 | #endif |
7d870865 AB |
2651 | fmt.push_back ('l'); |
2652 | fmt.push_back ('x'); | |
af39b1c2 SM |
2653 | DIAGNOSTIC_PUSH |
2654 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
7d870865 | 2655 | gdb_printf (stream, fmt.c_str (), val); |
af39b1c2 | 2656 | DIAGNOSTIC_POP |
c2792f5a DE |
2657 | } |
2658 | else | |
2659 | { | |
7d870865 | 2660 | fmt.push_back ('s'); |
af39b1c2 SM |
2661 | DIAGNOSTIC_PUSH |
2662 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
7d870865 | 2663 | gdb_printf (stream, fmt.c_str (), "(nil)"); |
af39b1c2 | 2664 | DIAGNOSTIC_POP |
c2792f5a DE |
2665 | } |
2666 | } | |
2667 | ||
a04b0428 JB |
2668 | /* printf "printf format string" ARG to STREAM. */ |
2669 | ||
2670 | static void | |
bbc13ae3 | 2671 | ui_printf (const char *arg, struct ui_file *stream) |
c906108c | 2672 | { |
bbc13ae3 | 2673 | const char *s = arg; |
8e481c3b | 2674 | std::vector<struct value *> val_args; |
c906108c SS |
2675 | |
2676 | if (s == 0) | |
e2e0b3e5 | 2677 | error_no_arg (_("format-control string and values to print")); |
c906108c | 2678 | |
f1735a53 | 2679 | s = skip_spaces (s); |
c906108c | 2680 | |
675dcf4f | 2681 | /* A format string should follow, enveloped in double quotes. */ |
c906108c | 2682 | if (*s++ != '"') |
8a3fe4f8 | 2683 | error (_("Bad format string, missing '\"'.")); |
c906108c | 2684 | |
901682e4 | 2685 | format_pieces fpieces (&s, false, true); |
c906108c | 2686 | |
d3ce09f5 SS |
2687 | if (*s++ != '"') |
2688 | error (_("Bad format string, non-terminated '\"'.")); | |
2689 | ||
f1735a53 | 2690 | s = skip_spaces (s); |
c906108c SS |
2691 | |
2692 | if (*s != ',' && *s != 0) | |
8a3fe4f8 | 2693 | error (_("Invalid argument syntax")); |
c906108c | 2694 | |
c5aa993b JM |
2695 | if (*s == ',') |
2696 | s++; | |
f1735a53 | 2697 | s = skip_spaces (s); |
c906108c | 2698 | |
c906108c | 2699 | { |
c906108c | 2700 | int nargs_wanted; |
8e481c3b TT |
2701 | int i; |
2702 | const char *current_substring; | |
c906108c | 2703 | |
c906108c | 2704 | nargs_wanted = 0; |
8e481c3b TT |
2705 | for (auto &&piece : fpieces) |
2706 | if (piece.argclass != literal_piece) | |
d3ce09f5 | 2707 | ++nargs_wanted; |
c906108c SS |
2708 | |
2709 | /* Now, parse all arguments and evaluate them. | |
2710 | Store the VALUEs in VAL_ARGS. */ | |
2711 | ||
2712 | while (*s != '\0') | |
2713 | { | |
bbc13ae3 | 2714 | const char *s1; |
ad3bbd48 | 2715 | |
a04b0428 | 2716 | s1 = s; |
8e481c3b | 2717 | val_args.push_back (parse_to_comma_and_eval (&s1)); |
c5aa993b | 2718 | |
c906108c SS |
2719 | s = s1; |
2720 | if (*s == ',') | |
2721 | s++; | |
2722 | } | |
c5aa993b | 2723 | |
8e481c3b | 2724 | if (val_args.size () != nargs_wanted) |
8a3fe4f8 | 2725 | error (_("Wrong number of arguments for specified format-string")); |
c906108c SS |
2726 | |
2727 | /* Now actually print them. */ | |
d3ce09f5 | 2728 | i = 0; |
8e481c3b | 2729 | for (auto &&piece : fpieces) |
c906108c | 2730 | { |
8e481c3b TT |
2731 | current_substring = piece.string; |
2732 | switch (piece.argclass) | |
c906108c SS |
2733 | { |
2734 | case string_arg: | |
c2792f5a | 2735 | printf_c_string (stream, current_substring, val_args[i]); |
c906108c | 2736 | break; |
6c7a06a3 | 2737 | case wide_string_arg: |
c2792f5a | 2738 | printf_wide_c_string (stream, current_substring, val_args[i]); |
6c7a06a3 TT |
2739 | break; |
2740 | case wide_char_arg: | |
2741 | { | |
d0c97917 | 2742 | struct gdbarch *gdbarch = val_args[i]->type ()->arch (); |
b858499d | 2743 | struct type *wctype = lookup_typename (current_language, |
e6c014f2 | 2744 | "wchar_t", NULL, 0); |
6c7a06a3 | 2745 | struct type *valtype; |
6c7a06a3 TT |
2746 | const gdb_byte *bytes; |
2747 | ||
d0c97917 | 2748 | valtype = val_args[i]->type (); |
df86565b | 2749 | if (valtype->length () != wctype->length () |
78134374 | 2750 | || valtype->code () != TYPE_CODE_INT) |
6c7a06a3 TT |
2751 | error (_("expected wchar_t argument for %%lc")); |
2752 | ||
efaf1ae0 | 2753 | bytes = val_args[i]->contents ().data (); |
6c7a06a3 | 2754 | |
8268c778 | 2755 | auto_obstack output; |
6c7a06a3 | 2756 | |
f870a310 | 2757 | convert_between_encodings (target_wide_charset (gdbarch), |
6c7a06a3 | 2758 | host_charset (), |
df86565b SM |
2759 | bytes, valtype->length (), |
2760 | valtype->length (), | |
6c7a06a3 TT |
2761 | &output, translit_char); |
2762 | obstack_grow_str0 (&output, ""); | |
2763 | ||
af39b1c2 SM |
2764 | DIAGNOSTIC_PUSH |
2765 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
6cb06a8c TT |
2766 | gdb_printf (stream, current_substring, |
2767 | obstack_base (&output)); | |
af39b1c2 | 2768 | DIAGNOSTIC_POP |
6c7a06a3 TT |
2769 | } |
2770 | break; | |
c906108c | 2771 | case long_long_arg: |
74a0d9f6 | 2772 | #ifdef PRINTF_HAS_LONG_LONG |
c906108c SS |
2773 | { |
2774 | long long val = value_as_long (val_args[i]); | |
ad3bbd48 | 2775 | |
af39b1c2 SM |
2776 | DIAGNOSTIC_PUSH |
2777 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
6cb06a8c | 2778 | gdb_printf (stream, current_substring, val); |
af39b1c2 | 2779 | DIAGNOSTIC_POP |
c906108c SS |
2780 | break; |
2781 | } | |
2782 | #else | |
8a3fe4f8 | 2783 | error (_("long long not supported in printf")); |
c906108c SS |
2784 | #endif |
2785 | case int_arg: | |
2786 | { | |
46e9880c | 2787 | int val = value_as_long (val_args[i]); |
ad3bbd48 | 2788 | |
af39b1c2 SM |
2789 | DIAGNOSTIC_PUSH |
2790 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
6cb06a8c | 2791 | gdb_printf (stream, current_substring, val); |
af39b1c2 | 2792 | DIAGNOSTIC_POP |
46e9880c DJ |
2793 | break; |
2794 | } | |
2795 | case long_arg: | |
2796 | { | |
c906108c | 2797 | long val = value_as_long (val_args[i]); |
ad3bbd48 | 2798 | |
e06f3d6e AB |
2799 | DIAGNOSTIC_PUSH |
2800 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
6cb06a8c | 2801 | gdb_printf (stream, current_substring, val); |
e06f3d6e AB |
2802 | DIAGNOSTIC_POP |
2803 | break; | |
2804 | } | |
2805 | case size_t_arg: | |
2806 | { | |
2807 | size_t val = value_as_long (val_args[i]); | |
2808 | ||
af39b1c2 SM |
2809 | DIAGNOSTIC_PUSH |
2810 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
6cb06a8c | 2811 | gdb_printf (stream, current_substring, val); |
af39b1c2 | 2812 | DIAGNOSTIC_POP |
c906108c SS |
2813 | break; |
2814 | } | |
16e812b2 UW |
2815 | /* Handles floating-point values. */ |
2816 | case double_arg: | |
2817 | case long_double_arg: | |
2818 | case dec32float_arg: | |
2819 | case dec64float_arg: | |
2820 | case dec128float_arg: | |
2821 | printf_floating (stream, current_substring, val_args[i], | |
8e481c3b | 2822 | piece.argclass); |
c2792f5a | 2823 | break; |
2025a643 | 2824 | case ptr_arg: |
c2792f5a DE |
2825 | printf_pointer (stream, current_substring, val_args[i]); |
2826 | break; | |
901682e4 AB |
2827 | case value_arg: |
2828 | { | |
2829 | value_print_options print_opts; | |
2830 | get_user_print_options (&print_opts); | |
2831 | ||
2832 | if (current_substring[2] == '[') | |
2833 | { | |
2834 | std::string args (¤t_substring[3], | |
2835 | strlen (¤t_substring[3]) - 1); | |
2836 | ||
2837 | const char *args_ptr = args.c_str (); | |
2838 | ||
2839 | /* Override global settings with explicit options, if | |
2840 | any. */ | |
2841 | auto group | |
2842 | = make_value_print_options_def_group (&print_opts); | |
2843 | gdb::option::process_options | |
2844 | (&args_ptr, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, | |
2845 | group); | |
2846 | ||
2847 | if (*args_ptr != '\0') | |
2848 | error (_("unexpected content in print options: %s"), | |
2849 | args_ptr); | |
2850 | } | |
2851 | ||
2852 | print_formatted (val_args[i], 0, &print_opts, stream); | |
2853 | } | |
2854 | break; | |
d3ce09f5 SS |
2855 | case literal_piece: |
2856 | /* Print a portion of the format string that has no | |
2857 | directives. Note that this will not include any | |
2858 | ordinary %-specs, but it might include "%%". That is | |
6cb06a8c | 2859 | why we use gdb_printf and not gdb_puts here. |
d3ce09f5 SS |
2860 | Also, we pass a dummy argument because some platforms |
2861 | have modified GCC to include -Wformat-security by | |
2862 | default, which will warn here if there is no | |
2863 | argument. */ | |
af39b1c2 SM |
2864 | DIAGNOSTIC_PUSH |
2865 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
6cb06a8c | 2866 | gdb_printf (stream, current_substring, 0); |
af39b1c2 | 2867 | DIAGNOSTIC_POP |
d3ce09f5 | 2868 | break; |
675dcf4f | 2869 | default: |
f34652de | 2870 | internal_error (_("failed internal consistency check")); |
c906108c | 2871 | } |
d3ce09f5 | 2872 | /* Maybe advance to the next argument. */ |
8e481c3b | 2873 | if (piece.argclass != literal_piece) |
d3ce09f5 | 2874 | ++i; |
c906108c | 2875 | } |
c906108c | 2876 | } |
c906108c | 2877 | } |
c906108c | 2878 | |
f1421989 HZ |
2879 | /* Implement the "printf" command. */ |
2880 | ||
a04b0428 | 2881 | static void |
0b39b52e | 2882 | printf_command (const char *arg, int from_tty) |
f1421989 | 2883 | { |
a04b0428 | 2884 | ui_printf (arg, gdb_stdout); |
3cd52293 | 2885 | gdb_stdout->reset_style (); |
1285ce86 | 2886 | gdb_stdout->wrap_here (0); |
da5bd37e | 2887 | gdb_stdout->flush (); |
f1421989 HZ |
2888 | } |
2889 | ||
2890 | /* Implement the "eval" command. */ | |
2891 | ||
2892 | static void | |
0b39b52e | 2893 | eval_command (const char *arg, int from_tty) |
f1421989 | 2894 | { |
d7e74731 | 2895 | string_file stb; |
f1421989 | 2896 | |
d7e74731 | 2897 | ui_printf (arg, &stb); |
f1421989 | 2898 | |
d7e74731 | 2899 | std::string expanded = insert_user_defined_cmd_args (stb.c_str ()); |
01770bbd | 2900 | |
95a6b0a1 | 2901 | execute_command (expanded.c_str (), from_tty); |
f1421989 HZ |
2902 | } |
2903 | ||
48136e00 LM |
2904 | /* Convenience function for error checking in memory-tag commands. */ |
2905 | ||
2906 | static void | |
2907 | show_addr_not_tagged (CORE_ADDR address) | |
2908 | { | |
2909 | error (_("Address %s not in a region mapped with a memory tagging flag."), | |
99d9c3b9 | 2910 | paddress (current_inferior ()->arch (), address)); |
48136e00 LM |
2911 | } |
2912 | ||
2913 | /* Convenience function for error checking in memory-tag commands. */ | |
2914 | ||
2915 | static void | |
2916 | show_memory_tagging_unsupported (void) | |
2917 | { | |
2918 | error (_("Memory tagging not supported or disabled by the current" | |
2919 | " architecture.")); | |
2920 | } | |
2921 | ||
2922 | /* Implement the "memory-tag" prefix command. */ | |
2923 | ||
2924 | static void | |
2925 | memory_tag_command (const char *arg, int from_tty) | |
2926 | { | |
2927 | help_list (memory_tag_list, "memory-tag ", all_commands, gdb_stdout); | |
2928 | } | |
2929 | ||
2930 | /* Helper for print-logical-tag and print-allocation-tag. */ | |
2931 | ||
2932 | static void | |
2933 | memory_tag_print_tag_command (const char *args, enum memtag_type tag_type) | |
2934 | { | |
2935 | if (args == nullptr) | |
2936 | error_no_arg (_("address or pointer")); | |
2937 | ||
2938 | /* Parse args into a value. If the value is a pointer or an address, | |
2939 | then fetch the logical or allocation tag. */ | |
2940 | value_print_options print_opts; | |
2941 | ||
2942 | struct value *val = process_print_command_args (args, &print_opts, true); | |
99d9c3b9 | 2943 | gdbarch *arch = current_inferior ()->arch (); |
48136e00 LM |
2944 | |
2945 | /* If the address is not in a region memory mapped with a memory tagging | |
2946 | flag, it is no use trying to access/manipulate its allocation tag. | |
2947 | ||
2948 | It is OK to manipulate the logical tag though. */ | |
2949 | if (tag_type == memtag_type::allocation | |
99d9c3b9 | 2950 | && !gdbarch_tagged_address_p (arch, val)) |
48136e00 LM |
2951 | show_addr_not_tagged (value_as_address (val)); |
2952 | ||
99d9c3b9 SM |
2953 | value *tag_value = gdbarch_get_memtag (arch, val, tag_type); |
2954 | std::string tag = gdbarch_memtag_to_string (arch, tag_value); | |
48136e00 LM |
2955 | |
2956 | if (tag.empty ()) | |
6cb06a8c TT |
2957 | gdb_printf (_("%s tag unavailable.\n"), |
2958 | tag_type | |
2959 | == memtag_type::logical? "Logical" : "Allocation"); | |
48136e00 LM |
2960 | |
2961 | struct value *v_tag = process_print_command_args (tag.c_str (), | |
2962 | &print_opts, | |
2963 | true); | |
2964 | print_opts.output_format = 'x'; | |
2965 | print_value (v_tag, print_opts); | |
2966 | } | |
2967 | ||
2968 | /* Implement the "memory-tag print-logical-tag" command. */ | |
2969 | ||
2970 | static void | |
2971 | memory_tag_print_logical_tag_command (const char *args, int from_tty) | |
2972 | { | |
2973 | if (!target_supports_memory_tagging ()) | |
2974 | show_memory_tagging_unsupported (); | |
2975 | ||
2976 | memory_tag_print_tag_command (args, memtag_type::logical); | |
2977 | } | |
2978 | ||
2979 | /* Implement the "memory-tag print-allocation-tag" command. */ | |
2980 | ||
2981 | static void | |
2982 | memory_tag_print_allocation_tag_command (const char *args, int from_tty) | |
2983 | { | |
2984 | if (!target_supports_memory_tagging ()) | |
2985 | show_memory_tagging_unsupported (); | |
2986 | ||
2987 | memory_tag_print_tag_command (args, memtag_type::allocation); | |
2988 | } | |
2989 | ||
2990 | /* Parse ARGS and extract ADDR and TAG. | |
2991 | ARGS should have format <expression> <tag bytes>. */ | |
2992 | ||
2993 | static void | |
2994 | parse_with_logical_tag_input (const char *args, struct value **val, | |
2995 | gdb::byte_vector &tags, | |
2996 | value_print_options *print_opts) | |
2997 | { | |
2998 | /* Fetch the address. */ | |
2999 | std::string address_string = extract_string_maybe_quoted (&args); | |
3000 | ||
3001 | /* Parse the address into a value. */ | |
3002 | *val = process_print_command_args (address_string.c_str (), print_opts, | |
3003 | true); | |
3004 | ||
3005 | /* Fetch the tag bytes. */ | |
3006 | std::string tag_string = extract_string_maybe_quoted (&args); | |
3007 | ||
3008 | /* Validate the input. */ | |
3009 | if (address_string.empty () || tag_string.empty ()) | |
3010 | error (_("Missing arguments.")); | |
3011 | ||
3012 | if (tag_string.length () != 2) | |
3013 | error (_("Error parsing tags argument. The tag should be 2 digits.")); | |
3014 | ||
3015 | tags = hex2bin (tag_string.c_str ()); | |
3016 | } | |
3017 | ||
3018 | /* Implement the "memory-tag with-logical-tag" command. */ | |
3019 | ||
3020 | static void | |
3021 | memory_tag_with_logical_tag_command (const char *args, int from_tty) | |
3022 | { | |
3023 | if (!target_supports_memory_tagging ()) | |
3024 | show_memory_tagging_unsupported (); | |
3025 | ||
3026 | if (args == nullptr) | |
3027 | error_no_arg (_("<address> <tag>")); | |
3028 | ||
3029 | gdb::byte_vector tags; | |
3030 | struct value *val; | |
3031 | value_print_options print_opts; | |
99d9c3b9 | 3032 | gdbarch *arch = current_inferior ()->arch (); |
48136e00 LM |
3033 | |
3034 | /* Parse the input. */ | |
3035 | parse_with_logical_tag_input (args, &val, tags, &print_opts); | |
3036 | ||
3037 | /* Setting the logical tag is just a local operation that does not touch | |
3038 | any memory from the target. Given an input value, we modify the value | |
3039 | to include the appropriate tag. | |
3040 | ||
3041 | For this reason we need to cast the argument value to a | |
3042 | (void *) pointer. This is so we have the right type for the gdbarch | |
3043 | hook to manipulate the value and insert the tag. | |
3044 | ||
3045 | Otherwise, this would fail if, for example, GDB parsed the argument value | |
3046 | into an int-sized value and the pointer value has a type of greater | |
3047 | length. */ | |
3048 | ||
3049 | /* Cast to (void *). */ | |
99d9c3b9 | 3050 | val = value_cast (builtin_type (current_inferior ()->arch ())->builtin_data_ptr, |
48136e00 LM |
3051 | val); |
3052 | ||
3053 | /* Length doesn't matter for a logical tag. Pass 0. */ | |
99d9c3b9 | 3054 | if (!gdbarch_set_memtags (arch, val, 0, tags, memtag_type::logical)) |
6cb06a8c | 3055 | gdb_printf (_("Could not update the logical tag data.\n")); |
48136e00 LM |
3056 | else |
3057 | { | |
3058 | /* Always print it in hex format. */ | |
3059 | print_opts.output_format = 'x'; | |
3060 | print_value (val, print_opts); | |
3061 | } | |
3062 | } | |
3063 | ||
3064 | /* Parse ARGS and extract ADDR, LENGTH and TAGS. */ | |
3065 | ||
3066 | static void | |
3067 | parse_set_allocation_tag_input (const char *args, struct value **val, | |
3068 | size_t *length, gdb::byte_vector &tags) | |
3069 | { | |
3070 | /* Fetch the address. */ | |
3071 | std::string address_string = extract_string_maybe_quoted (&args); | |
3072 | ||
3073 | /* Parse the address into a value. */ | |
3074 | value_print_options print_opts; | |
3075 | *val = process_print_command_args (address_string.c_str (), &print_opts, | |
3076 | true); | |
3077 | ||
3078 | /* Fetch the length. */ | |
3079 | std::string length_string = extract_string_maybe_quoted (&args); | |
3080 | ||
3081 | /* Fetch the tag bytes. */ | |
3082 | std::string tags_string = extract_string_maybe_quoted (&args); | |
3083 | ||
3084 | /* Validate the input. */ | |
3085 | if (address_string.empty () || length_string.empty () || tags_string.empty ()) | |
3086 | error (_("Missing arguments.")); | |
3087 | ||
3088 | errno = 0; | |
3089 | const char *trailer = nullptr; | |
3090 | LONGEST parsed_length = strtoulst (length_string.c_str (), &trailer, 10); | |
3091 | ||
3092 | if (errno != 0 || (trailer != nullptr && trailer[0] != '\0')) | |
3093 | error (_("Error parsing length argument.")); | |
3094 | ||
3095 | if (parsed_length <= 0) | |
3096 | error (_("Invalid zero or negative length.")); | |
3097 | ||
3098 | *length = parsed_length; | |
3099 | ||
3100 | if (tags_string.length () % 2) | |
3101 | error (_("Error parsing tags argument. Tags should be 2 digits per byte.")); | |
3102 | ||
3103 | tags = hex2bin (tags_string.c_str ()); | |
48136e00 LM |
3104 | } |
3105 | ||
3106 | /* Implement the "memory-tag set-allocation-tag" command. | |
3107 | ARGS should be in the format <address> <length> <tags>. */ | |
3108 | ||
3109 | static void | |
3110 | memory_tag_set_allocation_tag_command (const char *args, int from_tty) | |
3111 | { | |
3112 | if (!target_supports_memory_tagging ()) | |
3113 | show_memory_tagging_unsupported (); | |
3114 | ||
3115 | if (args == nullptr) | |
3116 | error_no_arg (_("<starting address> <length> <tag bytes>")); | |
3117 | ||
3118 | gdb::byte_vector tags; | |
3119 | size_t length = 0; | |
3120 | struct value *val; | |
3121 | ||
3122 | /* Parse the input. */ | |
3123 | parse_set_allocation_tag_input (args, &val, &length, tags); | |
3124 | ||
f00fb5e1 GR |
3125 | /* If the address is not in a region memory-mapped with a memory tagging |
3126 | flag, it is no use trying to manipulate its allocation tag. */ | |
3127 | if (!gdbarch_tagged_address_p (current_inferior ()->arch (), val)) | |
3128 | show_addr_not_tagged (value_as_address (val)); | |
3129 | ||
99d9c3b9 | 3130 | if (!gdbarch_set_memtags (current_inferior ()->arch (), val, length, tags, |
48136e00 | 3131 | memtag_type::allocation)) |
6cb06a8c | 3132 | gdb_printf (_("Could not update the allocation tag(s).\n")); |
48136e00 | 3133 | else |
6cb06a8c | 3134 | gdb_printf (_("Allocation tag(s) updated successfully.\n")); |
48136e00 LM |
3135 | } |
3136 | ||
3137 | /* Implement the "memory-tag check" command. */ | |
3138 | ||
3139 | static void | |
3140 | memory_tag_check_command (const char *args, int from_tty) | |
3141 | { | |
3142 | if (!target_supports_memory_tagging ()) | |
3143 | show_memory_tagging_unsupported (); | |
3144 | ||
3145 | if (args == nullptr) | |
cb50f66e | 3146 | error_no_arg (_("address or pointer")); |
48136e00 LM |
3147 | |
3148 | /* Parse the expression into a value. If the value is an address or | |
3149 | pointer, then check its logical tag against the allocation tag. */ | |
3150 | value_print_options print_opts; | |
3151 | ||
3152 | struct value *val = process_print_command_args (args, &print_opts, true); | |
99d9c3b9 | 3153 | gdbarch *arch = current_inferior ()->arch (); |
48136e00 LM |
3154 | |
3155 | /* If the address is not in a region memory mapped with a memory tagging | |
3156 | flag, it is no use trying to access/manipulate its allocation tag. */ | |
99d9c3b9 | 3157 | if (!gdbarch_tagged_address_p (arch, val)) |
48136e00 LM |
3158 | show_addr_not_tagged (value_as_address (val)); |
3159 | ||
3160 | CORE_ADDR addr = value_as_address (val); | |
3161 | ||
3162 | /* Check if the tag is valid. */ | |
99d9c3b9 | 3163 | if (!gdbarch_memtag_matches_p (arch, val)) |
48136e00 | 3164 | { |
99d9c3b9 SM |
3165 | value *tag = gdbarch_get_memtag (arch, val, memtag_type::logical); |
3166 | std::string ltag = gdbarch_memtag_to_string (arch, tag); | |
48136e00 | 3167 | |
99d9c3b9 SM |
3168 | tag = gdbarch_get_memtag (arch, val, memtag_type::allocation); |
3169 | std::string atag = gdbarch_memtag_to_string (arch, tag); | |
48136e00 | 3170 | |
6cb06a8c TT |
3171 | gdb_printf (_("Logical tag (%s) does not match" |
3172 | " the allocation tag (%s) for address %s.\n"), | |
3173 | ltag.c_str (), atag.c_str (), | |
99d9c3b9 | 3174 | paddress (current_inferior ()->arch (), addr)); |
48136e00 LM |
3175 | } |
3176 | else | |
3177 | { | |
3178 | struct value *tag | |
99d9c3b9 SM |
3179 | = gdbarch_get_memtag (current_inferior ()->arch (), val, |
3180 | memtag_type::logical); | |
48136e00 | 3181 | std::string ltag |
99d9c3b9 | 3182 | = gdbarch_memtag_to_string (current_inferior ()->arch (), tag); |
48136e00 | 3183 | |
6cb06a8c | 3184 | gdb_printf (_("Memory tags for address %s match (%s).\n"), |
99d9c3b9 | 3185 | paddress (current_inferior ()->arch (), addr), ltag.c_str ()); |
48136e00 LM |
3186 | } |
3187 | } | |
3188 | ||
6c265988 | 3189 | void _initialize_printcmd (); |
c906108c | 3190 | void |
6c265988 | 3191 | _initialize_printcmd () |
c906108c | 3192 | { |
c94fdfd0 EZ |
3193 | struct cmd_list_element *c; |
3194 | ||
c906108c SS |
3195 | current_display_number = -1; |
3196 | ||
c90e7d63 SM |
3197 | gdb::observers::free_objfile.attach (clear_dangling_display_expressions, |
3198 | "printcmd"); | |
a3247a22 | 3199 | |
11db9430 | 3200 | add_info ("address", info_address_command, |
188e1fa9 TT |
3201 | _("Describe where symbol SYM is stored.\n\ |
3202 | Usage: info address SYM")); | |
c906108c | 3203 | |
11db9430 | 3204 | add_info ("symbol", info_symbol_command, _("\ |
1bedd215 | 3205 | Describe what symbol is at location ADDR.\n\ |
188e1fa9 | 3206 | Usage: info symbol ADDR\n\ |
1bedd215 | 3207 | Only for symbols with fixed locations (global or static scope).")); |
c906108c | 3208 | |
037d7135 | 3209 | c = add_com ("x", class_vars, x_command, _("\ |
1bedd215 | 3210 | Examine memory: x/FMT ADDRESS.\n\ |
c906108c SS |
3211 | ADDRESS is an expression for the memory address to examine.\n\ |
3212 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
3213 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
6fbe845e AB |
3214 | t(binary), f(float), a(address), i(instruction), c(char), s(string)\n\ |
3215 | and z(hex, zero padded on the left).\n\ | |
1bedd215 | 3216 | Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ |
c906108c | 3217 | The specified number of objects of the specified size are printed\n\ |
bb556f1f TK |
3218 | according to the format. If a negative number is specified, memory is\n\ |
3219 | examined backward from the address.\n\n\ | |
c906108c SS |
3220 | Defaults for format and size letters are those previously used.\n\ |
3221 | Default count is 1. Default address is following last thing printed\n\ | |
1bedd215 | 3222 | with this command or \"print\".")); |
037d7135 | 3223 | set_cmd_completer_handle_brkchars (c, display_and_x_command_completer); |
c906108c | 3224 | |
11db9430 | 3225 | add_info ("display", info_display_command, _("\ |
188e1fa9 TT |
3226 | Expressions to display when program stops, with code numbers.\n\ |
3227 | Usage: info display")); | |
c906108c | 3228 | |
1a966eab AC |
3229 | add_cmd ("undisplay", class_vars, undisplay_command, _("\ |
3230 | Cancel some expressions to be displayed when program stops.\n\ | |
188e1fa9 | 3231 | Usage: undisplay [NUM]...\n\ |
c906108c SS |
3232 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
3233 | No argument means cancel all automatic-display expressions.\n\ | |
3234 | \"delete display\" has the same effect as this command.\n\ | |
1a966eab | 3235 | Do \"info display\" to see current list of code numbers."), |
c5aa993b | 3236 | &cmdlist); |
c906108c | 3237 | |
037d7135 | 3238 | c = add_com ("display", class_vars, display_command, _("\ |
1bedd215 | 3239 | Print value of expression EXP each time the program stops.\n\ |
188e1fa9 | 3240 | Usage: display[/FMT] EXP\n\ |
c906108c SS |
3241 | /FMT may be used before EXP as in the \"print\" command.\n\ |
3242 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
3243 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
3244 | and examining is done as in the \"x\" command.\n\n\ | |
3245 | With no argument, display all currently requested auto-display expressions.\n\ | |
1bedd215 | 3246 | Use \"undisplay\" to cancel display requests previously made.")); |
037d7135 | 3247 | set_cmd_completer_handle_brkchars (c, display_and_x_command_completer); |
c906108c | 3248 | |
c9174737 | 3249 | add_cmd ("display", class_vars, enable_display_command, _("\ |
1a966eab | 3250 | Enable some expressions to be displayed when program stops.\n\ |
188e1fa9 | 3251 | Usage: enable display [NUM]...\n\ |
c906108c SS |
3252 | Arguments are the code numbers of the expressions to resume displaying.\n\ |
3253 | No argument means enable all automatic-display expressions.\n\ | |
1a966eab | 3254 | Do \"info display\" to see current list of code numbers."), &enablelist); |
c906108c | 3255 | |
1a966eab AC |
3256 | add_cmd ("display", class_vars, disable_display_command, _("\ |
3257 | Disable some expressions to be displayed when program stops.\n\ | |
188e1fa9 | 3258 | Usage: disable display [NUM]...\n\ |
c906108c SS |
3259 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
3260 | No argument means disable all automatic-display expressions.\n\ | |
1a966eab | 3261 | Do \"info display\" to see current list of code numbers."), &disablelist); |
c906108c | 3262 | |
1a966eab AC |
3263 | add_cmd ("display", class_vars, undisplay_command, _("\ |
3264 | Cancel some expressions to be displayed when program stops.\n\ | |
188e1fa9 | 3265 | Usage: delete display [NUM]...\n\ |
c906108c SS |
3266 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
3267 | No argument means cancel all automatic-display expressions.\n\ | |
1a966eab | 3268 | Do \"info display\" to see current list of code numbers."), &deletelist); |
c906108c | 3269 | |
1bedd215 | 3270 | add_com ("printf", class_vars, printf_command, _("\ |
80ae639d | 3271 | Formatted printing, like the C \"printf\" function.\n\ |
188e1fa9 | 3272 | Usage: printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ |
80ae639d | 3273 | This supports most C printf format specifications, like %s, %d, etc.")); |
c906108c | 3274 | |
1bedd215 AC |
3275 | add_com ("output", class_vars, output_command, _("\ |
3276 | Like \"print\" but don't put in value history and don't print newline.\n\ | |
188e1fa9 | 3277 | Usage: output EXP\n\ |
1bedd215 | 3278 | This is useful in user-defined commands.")); |
c906108c | 3279 | |
1bedd215 | 3280 | add_prefix_cmd ("set", class_vars, set_command, _("\ |
590042fc | 3281 | Evaluate expression EXP and assign result to variable VAR.\n\ |
188e1fa9 TT |
3282 | Usage: set VAR = EXP\n\ |
3283 | This uses assignment syntax appropriate for the current language\n\ | |
3284 | (VAR = EXP or VAR := EXP for example).\n\ | |
3285 | VAR may be a debugger \"convenience\" variable (names starting\n\ | |
c906108c | 3286 | with $), a register (a few standard names starting with $), or an actual\n\ |
1bedd215 AC |
3287 | variable in the program being debugged. EXP is any valid expression.\n\ |
3288 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
3289 | \n\ | |
3290 | With a subcommand, this command modifies parts of the gdb environment.\n\ | |
3291 | You can see these environment settings with the \"show\" command."), | |
2f822da5 | 3292 | &setlist, 1, &cmdlist); |
c906108c | 3293 | |
0df8b418 | 3294 | /* "call" is the same as "set", but handy for dbx users to call fns. */ |
1bedd215 AC |
3295 | c = add_com ("call", class_vars, call_command, _("\ |
3296 | Call a function in the program.\n\ | |
188e1fa9 | 3297 | Usage: call EXP\n\ |
c906108c SS |
3298 | The argument is the function name and arguments, in the notation of the\n\ |
3299 | current working language. The result is printed and saved in the value\n\ | |
1bedd215 | 3300 | history, if it is not void.")); |
7d8062de | 3301 | set_cmd_completer_handle_brkchars (c, print_command_completer); |
c906108c | 3302 | |
5e84b7ee SM |
3303 | cmd_list_element *set_variable_cmd |
3304 | = add_cmd ("variable", class_vars, set_command, _("\ | |
590042fc | 3305 | Evaluate expression EXP and assign result to variable VAR.\n\ |
188e1fa9 TT |
3306 | Usage: set variable VAR = EXP\n\ |
3307 | This uses assignment syntax appropriate for the current language\n\ | |
3308 | (VAR = EXP or VAR := EXP for example).\n\ | |
3309 | VAR may be a debugger \"convenience\" variable (names starting\n\ | |
c906108c SS |
3310 | with $), a register (a few standard names starting with $), or an actual\n\ |
3311 | variable in the program being debugged. EXP is any valid expression.\n\ | |
1a966eab | 3312 | This may usually be abbreviated to simply \"set\"."), |
5e84b7ee SM |
3313 | &setlist); |
3314 | add_alias_cmd ("var", set_variable_cmd, class_vars, 0, &setlist); | |
c906108c | 3315 | |
7d8062de PA |
3316 | const auto print_opts = make_value_print_options_def_group (nullptr); |
3317 | ||
8abfcabc | 3318 | static const std::string print_help = gdb::option::build_help (_("\ |
1bedd215 | 3319 | Print value of expression EXP.\n\ |
7d8062de PA |
3320 | Usage: print [[OPTION]... --] [/FMT] [EXP]\n\ |
3321 | \n\ | |
3322 | Options:\n\ | |
590042fc PW |
3323 | %OPTIONS%\n\ |
3324 | \n\ | |
7d8062de PA |
3325 | Note: because this command accepts arbitrary expressions, if you\n\ |
3326 | specify any command option, you must use a double dash (\"--\")\n\ | |
3327 | to mark the end of option processing. E.g.: \"print -o -- myobj\".\n\ | |
3328 | \n\ | |
c906108c SS |
3329 | Variables accessible are those of the lexical environment of the selected\n\ |
3330 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
3331 | \n\ | |
3332 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
3333 | $$NUM refers to NUM'th value back from the last one.\n\ | |
1bedd215 AC |
3334 | Names starting with $ refer to registers (with the values they would have\n\ |
3335 | if the program were to return to the stack frame now selected, restoring\n\ | |
c906108c SS |
3336 | all registers saved by frames farther in) or else to debugger\n\ |
3337 | \"convenience\" variables (any such name not a known register).\n\ | |
1bedd215 AC |
3338 | Use assignment expressions to give values to convenience variables.\n\ |
3339 | \n\ | |
c906108c SS |
3340 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ |
3341 | @ is a binary operator for treating consecutive data objects\n\ | |
3342 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
3343 | element is FOO, whose second element is stored in the space following\n\ | |
3344 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
1bedd215 AC |
3345 | resides in memory.\n\ |
3346 | \n\ | |
c906108c | 3347 | EXP may be preceded with /FMT, where FMT is a format letter\n\ |
7d8062de PA |
3348 | but no count or size letter (see \"x\" command)."), |
3349 | print_opts); | |
3350 | ||
3947f654 SM |
3351 | cmd_list_element *print_cmd |
3352 | = add_com ("print", class_vars, print_command, print_help.c_str ()); | |
3353 | set_cmd_completer_handle_brkchars (print_cmd, print_command_completer); | |
3354 | add_com_alias ("p", print_cmd, class_vars, 1); | |
3355 | add_com_alias ("inspect", print_cmd, class_vars, 1); | |
c906108c | 3356 | |
35096d9d AC |
3357 | add_setshow_uinteger_cmd ("max-symbolic-offset", no_class, |
3358 | &max_symbolic_offset, _("\ | |
188e1fa9 TT |
3359 | Set the largest offset that will be printed in <SYMBOL+1234> form."), _("\ |
3360 | Show the largest offset that will be printed in <SYMBOL+1234> form."), _("\ | |
f81d1120 PA |
3361 | Tell GDB to only display the symbolic form of an address if the\n\ |
3362 | offset between the closest earlier symbol and the address is less than\n\ | |
3363 | the specified maximum offset. The default is \"unlimited\", which tells GDB\n\ | |
3364 | to always print the symbolic form of an address if any symbol precedes\n\ | |
3365 | it. Zero is equivalent to \"unlimited\"."), | |
35096d9d | 3366 | NULL, |
920d2a44 | 3367 | show_max_symbolic_offset, |
35096d9d | 3368 | &setprintlist, &showprintlist); |
5bf193a2 AC |
3369 | add_setshow_boolean_cmd ("symbol-filename", no_class, |
3370 | &print_symbol_filename, _("\ | |
188e1fa9 TT |
3371 | Set printing of source filename and line number with <SYMBOL>."), _("\ |
3372 | Show printing of source filename and line number with <SYMBOL>."), NULL, | |
5bf193a2 | 3373 | NULL, |
920d2a44 | 3374 | show_print_symbol_filename, |
5bf193a2 | 3375 | &setprintlist, &showprintlist); |
f1421989 HZ |
3376 | |
3377 | add_com ("eval", no_class, eval_command, _("\ | |
188e1fa9 TT |
3378 | Construct a GDB command and then evaluate it.\n\ |
3379 | Usage: eval \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
3380 | Convert the arguments to a string as \"printf\" would, but then\n\ | |
3381 | treat this string as a command line, and evaluate it.")); | |
48136e00 LM |
3382 | |
3383 | /* Memory tagging commands. */ | |
3384 | add_prefix_cmd ("memory-tag", class_vars, memory_tag_command, _("\ | |
3385 | Generic command for printing and manipulating memory tag properties."), | |
2f822da5 | 3386 | &memory_tag_list, 0, &cmdlist); |
48136e00 LM |
3387 | add_cmd ("print-logical-tag", class_vars, |
3388 | memory_tag_print_logical_tag_command, | |
3389 | ("Print the logical tag from POINTER.\n\ | |
3390 | Usage: memory-tag print-logical-tag <POINTER>.\n\ | |
3391 | <POINTER> is an expression that evaluates to a pointer.\n\ | |
3392 | Print the logical tag contained in POINTER. The tag interpretation is\n\ | |
3393 | architecture-specific."), | |
3394 | &memory_tag_list); | |
3395 | add_cmd ("print-allocation-tag", class_vars, | |
3396 | memory_tag_print_allocation_tag_command, | |
3397 | _("Print the allocation tag for ADDRESS.\n\ | |
3398 | Usage: memory-tag print-allocation-tag <ADDRESS>.\n\ | |
3399 | <ADDRESS> is an expression that evaluates to a memory address.\n\ | |
3400 | Print the allocation tag associated with the memory address ADDRESS.\n\ | |
3401 | The tag interpretation is architecture-specific."), | |
3402 | &memory_tag_list); | |
3403 | add_cmd ("with-logical-tag", class_vars, memory_tag_with_logical_tag_command, | |
3404 | _("Print a POINTER with a specific logical TAG.\n\ | |
3405 | Usage: memory-tag with-logical-tag <POINTER> <TAG>\n\ | |
3406 | <POINTER> is an expression that evaluates to a pointer.\n\ | |
3407 | <TAG> is a sequence of hex bytes that is interpreted by the architecture\n\ | |
3408 | as a single memory tag."), | |
3409 | &memory_tag_list); | |
3410 | add_cmd ("set-allocation-tag", class_vars, | |
3411 | memory_tag_set_allocation_tag_command, | |
3412 | _("Set the allocation tag(s) for a memory range.\n\ | |
3413 | Usage: memory-tag set-allocation-tag <ADDRESS> <LENGTH> <TAG_BYTES>\n\ | |
3414 | <ADDRESS> is an expression that evaluates to a memory address\n\ | |
3415 | <LENGTH> is the number of bytes that is added to <ADDRESS> to calculate\n\ | |
3416 | the memory range.\n\ | |
3417 | <TAG_BYTES> is a sequence of hex bytes that is interpreted by the\n\ | |
3418 | architecture as one or more memory tags.\n\ | |
3419 | Sets the tags of the memory range [ADDRESS, ADDRESS + LENGTH)\n\ | |
3420 | to TAG_BYTES.\n\ | |
3421 | \n\ | |
3422 | If the number of tags is greater than or equal to the number of tag granules\n\ | |
3423 | in the [ADDRESS, ADDRESS + LENGTH) range, only the tags up to the\n\ | |
3424 | number of tag granules are updated.\n\ | |
3425 | \n\ | |
3426 | If the number of tags is less than the number of tag granules, then the\n\ | |
3427 | command is a fill operation. The TAG_BYTES are interpreted as a pattern\n\ | |
3428 | that gets repeated until the number of tag granules in the memory range\n\ | |
3429 | [ADDRESS, ADDRESS + LENGTH) is updated."), | |
3430 | &memory_tag_list); | |
3431 | add_cmd ("check", class_vars, memory_tag_check_command, | |
3432 | _("Validate a pointer's logical tag against the allocation tag.\n\ | |
3433 | Usage: memory-tag check <POINTER>\n\ | |
3434 | <POINTER> is an expression that evaluates to a pointer\n\ | |
3435 | Fetch the logical and allocation tags for POINTER and compare them\n\ | |
3436 | for equality. If the tags do not match, print additional information about\n\ | |
3437 | the tag mismatch."), | |
3438 | &memory_tag_list); | |
c906108c | 3439 | } |