Commit | Line | Data |
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c906108c | 1 | /* Print values for GNU debugger GDB. |
e2ad119d | 2 | |
3666a048 | 3 | Copyright (C) 1986-2021 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
c906108c SS |
21 | #include "frame.h" |
22 | #include "symtab.h" | |
23 | #include "gdbtypes.h" | |
24 | #include "value.h" | |
25 | #include "language.h" | |
1f6f6e21 | 26 | #include "c-lang.h" |
c906108c SS |
27 | #include "expression.h" |
28 | #include "gdbcore.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "target.h" | |
31 | #include "breakpoint.h" | |
32 | #include "demangle.h" | |
50f182aa | 33 | #include "gdb-demangle.h" |
c906108c SS |
34 | #include "valprint.h" |
35 | #include "annotate.h" | |
c5aa993b JM |
36 | #include "symfile.h" /* for overlay functions */ |
37 | #include "objfiles.h" /* ditto */ | |
c94fdfd0 | 38 | #include "completer.h" /* for completion functions */ |
8b93c638 | 39 | #include "ui-out.h" |
fe898f56 | 40 | #include "block.h" |
92bf2b80 | 41 | #include "disasm.h" |
f69fdf9b | 42 | #include "target-float.h" |
76727919 | 43 | #include "observable.h" |
a3247a22 | 44 | #include "solist.h" |
a3247a22 | 45 | #include "parser-defs.h" |
6c7a06a3 | 46 | #include "charset.h" |
704e9165 | 47 | #include "arch-utils.h" |
e9cafbcc | 48 | #include "cli/cli-utils.h" |
7d8062de | 49 | #include "cli/cli-option.h" |
01770bbd | 50 | #include "cli/cli-script.h" |
80ae2043 | 51 | #include "cli/cli-style.h" |
268a13a5 | 52 | #include "gdbsupport/format.h" |
05cba821 | 53 | #include "source.h" |
268a13a5 TT |
54 | #include "gdbsupport/byte-vector.h" |
55 | #include "gdbsupport/gdb_optional.h" | |
037d7135 | 56 | #include "safe-ctype.h" |
48136e00 LM |
57 | #include "gdbsupport/rsp-low.h" |
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 | ||
5d3729b5 | 75 | /* Default address to examine next, and associated architecture. */ |
c906108c | 76 | |
5d3729b5 | 77 | static struct gdbarch *next_gdbarch; |
c906108c SS |
78 | static CORE_ADDR next_address; |
79 | ||
a4642986 MR |
80 | /* Number of delay instructions following current disassembled insn. */ |
81 | ||
82 | static int branch_delay_insns; | |
83 | ||
c906108c SS |
84 | /* Last address examined. */ |
85 | ||
86 | static CORE_ADDR last_examine_address; | |
87 | ||
88 | /* Contents of last address examined. | |
89 | This is not valid past the end of the `x' command! */ | |
90 | ||
9b558729 | 91 | static value_ref_ptr last_examine_value; |
c906108c SS |
92 | |
93 | /* Largest offset between a symbolic value and an address, that will be | |
94 | printed as `0x1234 <symbol+offset>'. */ | |
95 | ||
96 | static unsigned int max_symbolic_offset = UINT_MAX; | |
920d2a44 AC |
97 | static void |
98 | show_max_symbolic_offset (struct ui_file *file, int from_tty, | |
99 | struct cmd_list_element *c, const char *value) | |
100 | { | |
3e43a32a MS |
101 | fprintf_filtered (file, |
102 | _("The largest offset that will be " | |
103 | "printed in <symbol+1234> form is %s.\n"), | |
920d2a44 AC |
104 | value); |
105 | } | |
c906108c SS |
106 | |
107 | /* Append the source filename and linenumber of the symbol when | |
108 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
491144b5 | 109 | static bool print_symbol_filename = false; |
920d2a44 AC |
110 | static void |
111 | show_print_symbol_filename (struct ui_file *file, int from_tty, | |
112 | struct cmd_list_element *c, const char *value) | |
113 | { | |
3e43a32a MS |
114 | fprintf_filtered (file, _("Printing of source filename and " |
115 | "line number with <symbol> is %s.\n"), | |
920d2a44 AC |
116 | value); |
117 | } | |
c906108c SS |
118 | |
119 | /* Number of auto-display expression currently being displayed. | |
9d8fa392 | 120 | So that we can disable it if we get a signal within it. |
c906108c SS |
121 | -1 when not doing one. */ |
122 | ||
5a18e302 | 123 | static int current_display_number; |
c906108c | 124 | |
8be4b118 TT |
125 | /* Last allocated display number. */ |
126 | ||
127 | static int display_number; | |
128 | ||
c906108c | 129 | struct display |
c5aa993b | 130 | { |
8be4b118 TT |
131 | display (const char *exp_string_, expression_up &&exp_, |
132 | const struct format_data &format_, struct program_space *pspace_, | |
133 | const struct block *block_) | |
134 | : exp_string (exp_string_), | |
135 | exp (std::move (exp_)), | |
136 | number (++display_number), | |
137 | format (format_), | |
138 | pspace (pspace_), | |
139 | block (block_), | |
140 | enabled_p (true) | |
141 | { | |
142 | } | |
6c95b8df | 143 | |
fa8a61dc | 144 | /* The expression as the user typed it. */ |
8be4b118 | 145 | std::string exp_string; |
6c95b8df | 146 | |
c5aa993b | 147 | /* Expression to be evaluated and displayed. */ |
4d01a485 | 148 | expression_up exp; |
6c95b8df | 149 | |
c5aa993b JM |
150 | /* Item number of this auto-display item. */ |
151 | int number; | |
6c95b8df | 152 | |
c5aa993b JM |
153 | /* Display format specified. */ |
154 | struct format_data format; | |
6c95b8df PA |
155 | |
156 | /* Program space associated with `block'. */ | |
157 | struct program_space *pspace; | |
158 | ||
0df8b418 | 159 | /* Innermost block required by this expression when evaluated. */ |
270140bd | 160 | const struct block *block; |
6c95b8df | 161 | |
0df8b418 | 162 | /* Status of this display (enabled or disabled). */ |
8be4b118 | 163 | bool enabled_p; |
c5aa993b | 164 | }; |
c906108c | 165 | |
8be4b118 TT |
166 | /* Expressions whose values should be displayed automatically each |
167 | time the program stops. */ | |
c906108c | 168 | |
8be4b118 | 169 | static std::vector<std::unique_ptr<struct display>> all_displays; |
c9174737 | 170 | |
0df8b418 | 171 | /* Prototypes for local functions. */ |
c906108c | 172 | |
a14ed312 | 173 | static void do_one_display (struct display *); |
c906108c | 174 | \f |
c5aa993b | 175 | |
c906108c SS |
176 | /* Decode a format specification. *STRING_PTR should point to it. |
177 | OFORMAT and OSIZE are used as defaults for the format and size | |
178 | if none are given in the format specification. | |
179 | If OSIZE is zero, then the size field of the returned value | |
180 | should be set only if a size is explicitly specified by the | |
181 | user. | |
182 | The structure returned describes all the data | |
183 | found in the specification. In addition, *STRING_PTR is advanced | |
184 | past the specification and past all whitespace following it. */ | |
185 | ||
186 | static struct format_data | |
6f937416 | 187 | decode_format (const char **string_ptr, int oformat, int osize) |
c906108c SS |
188 | { |
189 | struct format_data val; | |
6f937416 | 190 | const char *p = *string_ptr; |
c906108c SS |
191 | |
192 | val.format = '?'; | |
193 | val.size = '?'; | |
194 | val.count = 1; | |
a6bac58e | 195 | val.raw = 0; |
c906108c | 196 | |
bb556f1f TK |
197 | if (*p == '-') |
198 | { | |
199 | val.count = -1; | |
200 | p++; | |
201 | } | |
c906108c | 202 | if (*p >= '0' && *p <= '9') |
bb556f1f | 203 | val.count *= atoi (p); |
c5aa993b JM |
204 | while (*p >= '0' && *p <= '9') |
205 | p++; | |
c906108c SS |
206 | |
207 | /* Now process size or format letters that follow. */ | |
208 | ||
209 | while (1) | |
210 | { | |
211 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
212 | val.size = *p++; | |
a6bac58e TT |
213 | else if (*p == 'r') |
214 | { | |
215 | val.raw = 1; | |
216 | p++; | |
217 | } | |
c906108c SS |
218 | else if (*p >= 'a' && *p <= 'z') |
219 | val.format = *p++; | |
220 | else | |
221 | break; | |
222 | } | |
223 | ||
2f433492 | 224 | *string_ptr = skip_spaces (p); |
c906108c SS |
225 | |
226 | /* Set defaults for format and size if not specified. */ | |
227 | if (val.format == '?') | |
228 | { | |
229 | if (val.size == '?') | |
230 | { | |
231 | /* Neither has been specified. */ | |
232 | val.format = oformat; | |
233 | val.size = osize; | |
234 | } | |
235 | else | |
236 | /* If a size is specified, any format makes a reasonable | |
237 | default except 'i'. */ | |
238 | val.format = oformat == 'i' ? 'x' : oformat; | |
239 | } | |
240 | else if (val.size == '?') | |
241 | switch (val.format) | |
242 | { | |
243 | case 'a': | |
5d3729b5 UW |
244 | /* Pick the appropriate size for an address. This is deferred |
245 | until do_examine when we know the actual architecture to use. | |
246 | A special size value of 'a' is used to indicate this case. */ | |
247 | val.size = osize ? 'a' : osize; | |
c906108c SS |
248 | break; |
249 | case 'f': | |
250 | /* Floating point has to be word or giantword. */ | |
251 | if (osize == 'w' || osize == 'g') | |
252 | val.size = osize; | |
253 | else | |
254 | /* Default it to giantword if the last used size is not | |
255 | appropriate. */ | |
256 | val.size = osize ? 'g' : osize; | |
257 | break; | |
258 | case 'c': | |
259 | /* Characters default to one byte. */ | |
260 | val.size = osize ? 'b' : osize; | |
261 | break; | |
9a22f0d0 | 262 | case 's': |
3e43a32a MS |
263 | /* Display strings with byte size chars unless explicitly |
264 | specified. */ | |
9a22f0d0 PM |
265 | val.size = '\0'; |
266 | break; | |
267 | ||
c906108c SS |
268 | default: |
269 | /* The default is the size most recently specified. */ | |
270 | val.size = osize; | |
271 | } | |
272 | ||
273 | return val; | |
274 | } | |
275 | \f | |
79a45b7d | 276 | /* Print value VAL on stream according to OPTIONS. |
c906108c | 277 | Do not end with a newline. |
c906108c | 278 | SIZE is the letter for the size of datum being printed. |
ea37ba09 DJ |
279 | This is used to pad hex numbers so they line up. SIZE is 0 |
280 | for print / output and set for examine. */ | |
c906108c SS |
281 | |
282 | static void | |
79a45b7d TT |
283 | print_formatted (struct value *val, int size, |
284 | const struct value_print_options *options, | |
fba45db2 | 285 | struct ui_file *stream) |
c906108c | 286 | { |
df407dfe | 287 | struct type *type = check_typedef (value_type (val)); |
c906108c SS |
288 | int len = TYPE_LENGTH (type); |
289 | ||
290 | if (VALUE_LVAL (val) == lval_memory) | |
42ae5230 | 291 | next_address = value_address (val) + len; |
c906108c | 292 | |
ea37ba09 | 293 | if (size) |
c906108c | 294 | { |
79a45b7d | 295 | switch (options->format) |
ea37ba09 DJ |
296 | { |
297 | case 's': | |
6c7a06a3 TT |
298 | { |
299 | struct type *elttype = value_type (val); | |
ad3bbd48 | 300 | |
42ae5230 | 301 | next_address = (value_address (val) |
09ca9e2e | 302 | + val_print_string (elttype, NULL, |
42ae5230 | 303 | value_address (val), -1, |
9a22f0d0 | 304 | stream, options) * len); |
6c7a06a3 | 305 | } |
ea37ba09 | 306 | return; |
c906108c | 307 | |
ea37ba09 DJ |
308 | case 'i': |
309 | /* We often wrap here if there are long symbolic names. */ | |
310 | wrap_here (" "); | |
42ae5230 | 311 | next_address = (value_address (val) |
8ee511af | 312 | + gdb_print_insn (type->arch (), |
13274fc3 | 313 | value_address (val), stream, |
ea37ba09 DJ |
314 | &branch_delay_insns)); |
315 | return; | |
316 | } | |
c906108c | 317 | } |
ea37ba09 | 318 | |
79a45b7d | 319 | if (options->format == 0 || options->format == 's' |
3d87245c | 320 | || type->code () == TYPE_CODE_VOID |
78134374 SM |
321 | || type->code () == TYPE_CODE_REF |
322 | || type->code () == TYPE_CODE_ARRAY | |
323 | || type->code () == TYPE_CODE_STRING | |
324 | || type->code () == TYPE_CODE_STRUCT | |
325 | || type->code () == TYPE_CODE_UNION | |
326 | || type->code () == TYPE_CODE_NAMESPACE) | |
79a45b7d | 327 | value_print (val, stream, options); |
ea37ba09 | 328 | else |
b021a221 MS |
329 | /* User specified format, so don't look to the type to tell us |
330 | what to do. */ | |
4dba70ee | 331 | value_print_scalar_formatted (val, options, size, stream); |
c906108c SS |
332 | } |
333 | ||
b806fb9a UW |
334 | /* Return builtin floating point type of same length as TYPE. |
335 | If no such type is found, return TYPE itself. */ | |
336 | static struct type * | |
50810684 | 337 | float_type_from_length (struct type *type) |
b806fb9a | 338 | { |
8ee511af | 339 | struct gdbarch *gdbarch = type->arch (); |
b806fb9a | 340 | const struct builtin_type *builtin = builtin_type (gdbarch); |
b806fb9a | 341 | |
744a8059 | 342 | if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_float)) |
b806fb9a | 343 | type = builtin->builtin_float; |
744a8059 | 344 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_double)) |
b806fb9a | 345 | type = builtin->builtin_double; |
744a8059 | 346 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_long_double)) |
b806fb9a UW |
347 | type = builtin->builtin_long_double; |
348 | ||
349 | return type; | |
350 | } | |
351 | ||
c906108c | 352 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, |
ab2188aa PA |
353 | according to OPTIONS and SIZE on STREAM. Formats s and i are not |
354 | supported at this level. */ | |
c906108c SS |
355 | |
356 | void | |
7c543f7b | 357 | print_scalar_formatted (const gdb_byte *valaddr, struct type *type, |
79a45b7d TT |
358 | const struct value_print_options *options, |
359 | int size, struct ui_file *stream) | |
c906108c | 360 | { |
8ee511af | 361 | struct gdbarch *gdbarch = type->arch (); |
c906108c | 362 | unsigned int len = TYPE_LENGTH (type); |
34877895 | 363 | enum bfd_endian byte_order = type_byte_order (type); |
c906108c | 364 | |
ab2188aa PA |
365 | /* String printing should go through val_print_scalar_formatted. */ |
366 | gdb_assert (options->format != 's'); | |
ea37ba09 | 367 | |
ef166cf4 | 368 | /* If the value is a pointer, and pointers and addresses are not the |
d0aee0c4 | 369 | same, then at this point, the value's length (in target bytes) is |
17a912b6 | 370 | gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */ |
78134374 | 371 | if (type->code () == TYPE_CODE_PTR) |
69feb676 | 372 | len = gdbarch_addr_bit (gdbarch) / TARGET_CHAR_BIT; |
ef166cf4 | 373 | |
c906108c SS |
374 | /* If we are printing it as unsigned, truncate it in case it is actually |
375 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
376 | (if shorts are 16 bits) instead of 4294967295). */ | |
d9109c80 | 377 | if (options->format != 'c' |
c6d940a9 | 378 | && (options->format != 'd' || type->is_unsigned ())) |
c906108c | 379 | { |
d9109c80 TT |
380 | if (len < TYPE_LENGTH (type) && byte_order == BFD_ENDIAN_BIG) |
381 | valaddr += TYPE_LENGTH (type) - len; | |
c906108c SS |
382 | } |
383 | ||
20a5fcbd TT |
384 | /* Allow LEN == 0, and in this case, don't assume that VALADDR is |
385 | valid. */ | |
386 | const gdb_byte zero = 0; | |
387 | if (len == 0) | |
388 | { | |
389 | len = 1; | |
390 | valaddr = &zero; | |
391 | } | |
392 | ||
d9109c80 | 393 | if (size != 0 && (options->format == 'x' || options->format == 't')) |
c906108c | 394 | { |
d9109c80 TT |
395 | /* Truncate to fit. */ |
396 | unsigned newlen; | |
397 | switch (size) | |
c906108c | 398 | { |
d9109c80 TT |
399 | case 'b': |
400 | newlen = 1; | |
401 | break; | |
402 | case 'h': | |
403 | newlen = 2; | |
404 | break; | |
405 | case 'w': | |
406 | newlen = 4; | |
407 | break; | |
408 | case 'g': | |
409 | newlen = 8; | |
410 | break; | |
411 | default: | |
412 | error (_("Undefined output size \"%c\"."), size); | |
c906108c | 413 | } |
d9109c80 TT |
414 | if (newlen < len && byte_order == BFD_ENDIAN_BIG) |
415 | valaddr += len - newlen; | |
416 | len = newlen; | |
417 | } | |
c906108c | 418 | |
d9109c80 TT |
419 | /* Historically gdb has printed floats by first casting them to a |
420 | long, and then printing the long. PR cli/16242 suggests changing | |
4e962e74 TT |
421 | this to using C-style hex float format. |
422 | ||
20a5fcbd TT |
423 | Biased range types and sub-word scalar types must also be handled |
424 | here; the value is correctly computed by unpack_long. */ | |
4e962e74 TT |
425 | gdb::byte_vector converted_bytes; |
426 | /* Some cases below will unpack the value again. In the biased | |
427 | range case, we want to avoid this, so we store the unpacked value | |
428 | here for possible use later. */ | |
429 | gdb::optional<LONGEST> val_long; | |
b26daff9 JB |
430 | if (((type->code () == TYPE_CODE_FLT |
431 | || is_fixed_point_type (type)) | |
4e962e74 TT |
432 | && (options->format == 'o' |
433 | || options->format == 'x' | |
434 | || options->format == 't' | |
435 | || options->format == 'z' | |
436 | || options->format == 'd' | |
437 | || options->format == 'u')) | |
20a5fcbd TT |
438 | || (type->code () == TYPE_CODE_RANGE && type->bounds ()->bias != 0) |
439 | || type->bit_size_differs_p ()) | |
d9109c80 | 440 | { |
4e962e74 TT |
441 | val_long.emplace (unpack_long (type, valaddr)); |
442 | converted_bytes.resize (TYPE_LENGTH (type)); | |
443 | store_signed_integer (converted_bytes.data (), TYPE_LENGTH (type), | |
444 | byte_order, *val_long); | |
445 | valaddr = converted_bytes.data (); | |
d9109c80 | 446 | } |
c906108c | 447 | |
fdf0cbc2 UW |
448 | /* Printing a non-float type as 'f' will interpret the data as if it were |
449 | of a floating-point type of the same length, if that exists. Otherwise, | |
450 | the data is printed as integer. */ | |
451 | char format = options->format; | |
78134374 | 452 | if (format == 'f' && type->code () != TYPE_CODE_FLT) |
fdf0cbc2 UW |
453 | { |
454 | type = float_type_from_length (type); | |
78134374 | 455 | if (type->code () != TYPE_CODE_FLT) |
dda83cd7 | 456 | format = 0; |
fdf0cbc2 UW |
457 | } |
458 | ||
459 | switch (format) | |
d9109c80 TT |
460 | { |
461 | case 'o': | |
462 | print_octal_chars (stream, valaddr, len, byte_order); | |
463 | break; | |
d6382fff TT |
464 | case 'd': |
465 | print_decimal_chars (stream, valaddr, len, true, byte_order); | |
466 | break; | |
c906108c | 467 | case 'u': |
d9109c80 | 468 | print_decimal_chars (stream, valaddr, len, false, byte_order); |
c906108c | 469 | break; |
d9109c80 | 470 | case 0: |
78134374 | 471 | if (type->code () != TYPE_CODE_FLT) |
d9109c80 | 472 | { |
c6d940a9 | 473 | print_decimal_chars (stream, valaddr, len, !type->is_unsigned (), |
d9109c80 TT |
474 | byte_order); |
475 | break; | |
476 | } | |
477 | /* FALLTHROUGH */ | |
478 | case 'f': | |
d9109c80 | 479 | print_floating (valaddr, type, stream); |
c906108c SS |
480 | break; |
481 | ||
d9109c80 TT |
482 | case 't': |
483 | print_binary_chars (stream, valaddr, len, byte_order, size > 0); | |
484 | break; | |
485 | case 'x': | |
486 | print_hex_chars (stream, valaddr, len, byte_order, size > 0); | |
487 | break; | |
488 | case 'z': | |
489 | print_hex_chars (stream, valaddr, len, byte_order, true); | |
c906108c | 490 | break; |
c906108c | 491 | case 'c': |
79a45b7d TT |
492 | { |
493 | struct value_print_options opts = *options; | |
69feb676 | 494 | |
4e962e74 TT |
495 | if (!val_long.has_value ()) |
496 | val_long.emplace (unpack_long (type, valaddr)); | |
d9109c80 | 497 | |
ad3bbd48 | 498 | opts.format = 0; |
c6d940a9 | 499 | if (type->is_unsigned ()) |
69feb676 UW |
500 | type = builtin_type (gdbarch)->builtin_true_unsigned_char; |
501 | else | |
502 | type = builtin_type (gdbarch)->builtin_true_char; | |
503 | ||
4e962e74 | 504 | value_print (value_from_longest (type, *val_long), stream, &opts); |
79a45b7d | 505 | } |
c906108c SS |
506 | break; |
507 | ||
d9109c80 | 508 | case 'a': |
c906108c | 509 | { |
4e962e74 TT |
510 | if (!val_long.has_value ()) |
511 | val_long.emplace (unpack_long (type, valaddr)); | |
512 | print_address (gdbarch, *val_long, stream); | |
c906108c SS |
513 | } |
514 | break; | |
515 | ||
516 | default: | |
fdf0cbc2 | 517 | error (_("Undefined output format \"%c\"."), format); |
c906108c SS |
518 | } |
519 | } | |
520 | ||
521 | /* Specify default address for `x' command. | |
675dcf4f | 522 | The `info lines' command uses this. */ |
c906108c SS |
523 | |
524 | void | |
8b9b9e1a | 525 | set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 526 | { |
8b9b9e1a UW |
527 | struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
528 | ||
5d3729b5 | 529 | next_gdbarch = gdbarch; |
c906108c SS |
530 | next_address = addr; |
531 | ||
532 | /* Make address available to the user as $_. */ | |
533 | set_internalvar (lookup_internalvar ("_"), | |
8b9b9e1a | 534 | value_from_pointer (ptr_type, addr)); |
c906108c SS |
535 | } |
536 | ||
537 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
538 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
539 | Optionally also print source file and line number, if available. | |
540 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
541 | or to interpret it as a possible C++ name and convert it back to source | |
542 | form. However note that DO_DEMANGLE can be overridden by the specific | |
9cb709b6 TT |
543 | settings of the demangle and asm_demangle variables. Returns |
544 | non-zero if anything was printed; zero otherwise. */ | |
c906108c | 545 | |
9cb709b6 | 546 | int |
22e722e1 DJ |
547 | print_address_symbolic (struct gdbarch *gdbarch, CORE_ADDR addr, |
548 | struct ui_file *stream, | |
a121b7c1 | 549 | int do_demangle, const char *leadin) |
dfcd3bfb | 550 | { |
c7110220 | 551 | std::string name, filename; |
dfcd3bfb JM |
552 | int unmapped = 0; |
553 | int offset = 0; | |
554 | int line = 0; | |
555 | ||
2dc80cf8 | 556 | if (build_address_symbolic (gdbarch, addr, do_demangle, false, &name, |
dda83cd7 | 557 | &offset, &filename, &line, &unmapped)) |
c7110220 | 558 | return 0; |
dfcd3bfb JM |
559 | |
560 | fputs_filtered (leadin, stream); | |
561 | if (unmapped) | |
562 | fputs_filtered ("<*", stream); | |
563 | else | |
564 | fputs_filtered ("<", stream); | |
af79b68d | 565 | fputs_styled (name.c_str (), function_name_style.style (), stream); |
dfcd3bfb | 566 | if (offset != 0) |
a1530dc7 | 567 | fprintf_filtered (stream, "%+d", offset); |
dfcd3bfb JM |
568 | |
569 | /* Append source filename and line number if desired. Give specific | |
570 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
c7110220 | 571 | if (print_symbol_filename && !filename.empty ()) |
dfcd3bfb | 572 | { |
af79b68d TT |
573 | fputs_filtered (line == -1 ? " in " : " at ", stream); |
574 | fputs_styled (filename.c_str (), file_name_style.style (), stream); | |
dfcd3bfb | 575 | if (line != -1) |
af79b68d | 576 | fprintf_filtered (stream, ":%d", line); |
dfcd3bfb JM |
577 | } |
578 | if (unmapped) | |
579 | fputs_filtered ("*>", stream); | |
580 | else | |
581 | fputs_filtered (">", stream); | |
582 | ||
9cb709b6 | 583 | return 1; |
dfcd3bfb JM |
584 | } |
585 | ||
c7110220 TT |
586 | /* See valprint.h. */ |
587 | ||
dfcd3bfb | 588 | int |
22e722e1 DJ |
589 | build_address_symbolic (struct gdbarch *gdbarch, |
590 | CORE_ADDR addr, /* IN */ | |
2dc80cf8 KB |
591 | bool do_demangle, /* IN */ |
592 | bool prefer_sym_over_minsym, /* IN */ | |
c7110220 | 593 | std::string *name, /* OUT */ |
dfcd3bfb | 594 | int *offset, /* OUT */ |
c7110220 | 595 | std::string *filename, /* OUT */ |
dfcd3bfb JM |
596 | int *line, /* OUT */ |
597 | int *unmapped) /* OUT */ | |
c906108c | 598 | { |
77e371c0 | 599 | struct bound_minimal_symbol msymbol; |
c906108c | 600 | struct symbol *symbol; |
c906108c | 601 | CORE_ADDR name_location = 0; |
714835d5 | 602 | struct obj_section *section = NULL; |
0d5cff50 | 603 | const char *name_temp = ""; |
dfcd3bfb | 604 | |
89c83b10 | 605 | /* Let's say it is mapped (not unmapped). */ |
dfcd3bfb | 606 | *unmapped = 0; |
c906108c | 607 | |
dfcd3bfb | 608 | /* Determine if the address is in an overlay, and whether it is |
675dcf4f | 609 | mapped. */ |
c906108c SS |
610 | if (overlay_debugging) |
611 | { | |
612 | section = find_pc_overlay (addr); | |
613 | if (pc_in_unmapped_range (addr, section)) | |
614 | { | |
dfcd3bfb | 615 | *unmapped = 1; |
c906108c SS |
616 | addr = overlay_mapped_address (addr, section); |
617 | } | |
618 | } | |
619 | ||
2dc80cf8 KB |
620 | /* Try to find the address in both the symbol table and the minsyms. |
621 | In most cases, we'll prefer to use the symbol instead of the | |
622 | minsym. However, there are cases (see below) where we'll choose | |
623 | to use the minsym instead. */ | |
c906108c SS |
624 | |
625 | /* This is defective in the sense that it only finds text symbols. So | |
626 | really this is kind of pointless--we should make sure that the | |
627 | minimal symbols have everything we need (by changing that we could | |
628 | save some memory, but for many debug format--ELF/DWARF or | |
629 | anything/stabs--it would be inconvenient to eliminate those minimal | |
630 | symbols anyway). */ | |
77e371c0 | 631 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section); |
c906108c SS |
632 | symbol = find_pc_sect_function (addr, section); |
633 | ||
634 | if (symbol) | |
635 | { | |
22e722e1 DJ |
636 | /* If this is a function (i.e. a code address), strip out any |
637 | non-address bits. For instance, display a pointer to the | |
638 | first instruction of a Thumb function as <function>; the | |
639 | second instruction will be <function+2>, even though the | |
640 | pointer is <function+3>. This matches the ISA behavior. */ | |
641 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
642 | ||
2b1ffcfd | 643 | name_location = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (symbol)); |
406fc7fb | 644 | if (do_demangle || asm_demangle) |
987012b8 | 645 | name_temp = symbol->print_name (); |
c906108c | 646 | else |
987012b8 | 647 | name_temp = symbol->linkage_name (); |
c906108c SS |
648 | } |
649 | ||
77e371c0 TT |
650 | if (msymbol.minsym != NULL |
651 | && MSYMBOL_HAS_SIZE (msymbol.minsym) | |
652 | && MSYMBOL_SIZE (msymbol.minsym) == 0 | |
653 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text | |
654 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text_gnu_ifunc | |
655 | && MSYMBOL_TYPE (msymbol.minsym) != mst_file_text) | |
656 | msymbol.minsym = NULL; | |
9cb709b6 | 657 | |
77e371c0 | 658 | if (msymbol.minsym != NULL) |
c906108c | 659 | { |
2dc80cf8 KB |
660 | /* Use the minsym if no symbol is found. |
661 | ||
662 | Additionally, use the minsym instead of a (found) symbol if | |
663 | the following conditions all hold: | |
664 | 1) The prefer_sym_over_minsym flag is false. | |
665 | 2) The minsym address is identical to that of the address under | |
666 | consideration. | |
667 | 3) The symbol address is not identical to that of the address | |
668 | under consideration. */ | |
669 | if (symbol == NULL || | |
dda83cd7 | 670 | (!prefer_sym_over_minsym |
2dc80cf8 KB |
671 | && BMSYMBOL_VALUE_ADDRESS (msymbol) == addr |
672 | && name_location != addr)) | |
c906108c | 673 | { |
fe8400b4 WN |
674 | /* If this is a function (i.e. a code address), strip out any |
675 | non-address bits. For instance, display a pointer to the | |
676 | first instruction of a Thumb function as <function>; the | |
677 | second instruction will be <function+2>, even though the | |
678 | pointer is <function+3>. This matches the ISA behavior. */ | |
77e371c0 TT |
679 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_text |
680 | || MSYMBOL_TYPE (msymbol.minsym) == mst_text_gnu_ifunc | |
681 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_text | |
682 | || MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
fe8400b4 WN |
683 | addr = gdbarch_addr_bits_remove (gdbarch, addr); |
684 | ||
c906108c | 685 | symbol = 0; |
77e371c0 | 686 | name_location = BMSYMBOL_VALUE_ADDRESS (msymbol); |
406fc7fb | 687 | if (do_demangle || asm_demangle) |
c9d95fa3 | 688 | name_temp = msymbol.minsym->print_name (); |
c906108c | 689 | else |
c9d95fa3 | 690 | name_temp = msymbol.minsym->linkage_name (); |
c906108c SS |
691 | } |
692 | } | |
77e371c0 | 693 | if (symbol == NULL && msymbol.minsym == NULL) |
dfcd3bfb | 694 | return 1; |
c906108c | 695 | |
c906108c SS |
696 | /* If the nearest symbol is too far away, don't print anything symbolic. */ |
697 | ||
698 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
699 | CORE_ADDR. But when we detect unsigned wraparound in the | |
700 | CORE_ADDR math, we ignore this test and print the offset, | |
701 | because addr+max_symbolic_offset has wrapped through the end | |
702 | of the address space back to the beginning, giving bogus comparison. */ | |
703 | if (addr > name_location + max_symbolic_offset | |
704 | && name_location + max_symbolic_offset > name_location) | |
dfcd3bfb | 705 | return 1; |
c906108c | 706 | |
a1530dc7 | 707 | *offset = (LONGEST) addr - name_location; |
dfcd3bfb | 708 | |
c7110220 | 709 | *name = name_temp; |
c906108c | 710 | |
c906108c SS |
711 | if (print_symbol_filename) |
712 | { | |
713 | struct symtab_and_line sal; | |
714 | ||
715 | sal = find_pc_sect_line (addr, section, 0); | |
716 | ||
717 | if (sal.symtab) | |
dfcd3bfb | 718 | { |
c7110220 | 719 | *filename = symtab_to_filename_for_display (sal.symtab); |
dfcd3bfb JM |
720 | *line = sal.line; |
721 | } | |
c906108c | 722 | } |
dfcd3bfb | 723 | return 0; |
c906108c SS |
724 | } |
725 | ||
c906108c SS |
726 | |
727 | /* Print address ADDR symbolically on STREAM. | |
728 | First print it as a number. Then perhaps print | |
729 | <SYMBOL + OFFSET> after the number. */ | |
730 | ||
731 | void | |
5af949e3 UW |
732 | print_address (struct gdbarch *gdbarch, |
733 | CORE_ADDR addr, struct ui_file *stream) | |
c906108c | 734 | { |
35fb8261 | 735 | fputs_styled (paddress (gdbarch, addr), address_style.style (), stream); |
22e722e1 | 736 | print_address_symbolic (gdbarch, addr, stream, asm_demangle, " "); |
c906108c SS |
737 | } |
738 | ||
2b28d209 PP |
739 | /* Return a prefix for instruction address: |
740 | "=> " for current instruction, else " ". */ | |
741 | ||
742 | const char * | |
743 | pc_prefix (CORE_ADDR addr) | |
744 | { | |
745 | if (has_stack_frames ()) | |
746 | { | |
747 | struct frame_info *frame; | |
748 | CORE_ADDR pc; | |
749 | ||
750 | frame = get_selected_frame (NULL); | |
ce406537 | 751 | if (get_frame_pc_if_available (frame, &pc) && pc == addr) |
2b28d209 PP |
752 | return "=> "; |
753 | } | |
754 | return " "; | |
755 | } | |
756 | ||
c906108c SS |
757 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE |
758 | controls whether to print the symbolic name "raw" or demangled. | |
9cb709b6 | 759 | Return non-zero if anything was printed; zero otherwise. */ |
c906108c | 760 | |
9cb709b6 | 761 | int |
edf0c1b7 TT |
762 | print_address_demangle (const struct value_print_options *opts, |
763 | struct gdbarch *gdbarch, CORE_ADDR addr, | |
5af949e3 | 764 | struct ui_file *stream, int do_demangle) |
c906108c | 765 | { |
1d51a733 | 766 | if (opts->addressprint) |
c906108c | 767 | { |
35fb8261 | 768 | fputs_styled (paddress (gdbarch, addr), address_style.style (), stream); |
22e722e1 | 769 | print_address_symbolic (gdbarch, addr, stream, do_demangle, " "); |
c906108c SS |
770 | } |
771 | else | |
772 | { | |
9cb709b6 | 773 | return print_address_symbolic (gdbarch, addr, stream, do_demangle, ""); |
c906108c | 774 | } |
9cb709b6 | 775 | return 1; |
c906108c SS |
776 | } |
777 | \f | |
778 | ||
bb556f1f TK |
779 | /* Find the address of the instruction that is INST_COUNT instructions before |
780 | the instruction at ADDR. | |
781 | Since some architectures have variable-length instructions, we can't just | |
782 | simply subtract INST_COUNT * INSN_LEN from ADDR. Instead, we use line | |
783 | number information to locate the nearest known instruction boundary, | |
784 | and disassemble forward from there. If we go out of the symbol range | |
785 | during disassembling, we return the lowest address we've got so far and | |
786 | set the number of instructions read to INST_READ. */ | |
787 | ||
788 | static CORE_ADDR | |
789 | find_instruction_backward (struct gdbarch *gdbarch, CORE_ADDR addr, | |
dda83cd7 | 790 | int inst_count, int *inst_read) |
bb556f1f TK |
791 | { |
792 | /* The vector PCS is used to store instruction addresses within | |
793 | a pc range. */ | |
794 | CORE_ADDR loop_start, loop_end, p; | |
52d214d3 | 795 | std::vector<CORE_ADDR> pcs; |
bb556f1f | 796 | struct symtab_and_line sal; |
bb556f1f TK |
797 | |
798 | *inst_read = 0; | |
799 | loop_start = loop_end = addr; | |
800 | ||
801 | /* In each iteration of the outer loop, we get a pc range that ends before | |
802 | LOOP_START, then we count and store every instruction address of the range | |
803 | iterated in the loop. | |
804 | If the number of instructions counted reaches INST_COUNT, return the | |
805 | stored address that is located INST_COUNT instructions back from ADDR. | |
806 | If INST_COUNT is not reached, we subtract the number of counted | |
807 | instructions from INST_COUNT, and go to the next iteration. */ | |
808 | do | |
809 | { | |
52d214d3 | 810 | pcs.clear (); |
bb556f1f TK |
811 | sal = find_pc_sect_line (loop_start, NULL, 1); |
812 | if (sal.line <= 0) | |
dda83cd7 SM |
813 | { |
814 | /* We reach here when line info is not available. In this case, | |
815 | we print a message and just exit the loop. The return value | |
816 | is calculated after the loop. */ | |
817 | printf_filtered (_("No line number information available " | |
818 | "for address ")); | |
819 | wrap_here (" "); | |
820 | print_address (gdbarch, loop_start - 1, gdb_stdout); | |
821 | printf_filtered ("\n"); | |
822 | break; | |
823 | } | |
bb556f1f TK |
824 | |
825 | loop_end = loop_start; | |
826 | loop_start = sal.pc; | |
827 | ||
828 | /* This loop pushes instruction addresses in the range from | |
dda83cd7 | 829 | LOOP_START to LOOP_END. */ |
bb556f1f | 830 | for (p = loop_start; p < loop_end;) |
dda83cd7 | 831 | { |
52d214d3 | 832 | pcs.push_back (p); |
dda83cd7 SM |
833 | p += gdb_insn_length (gdbarch, p); |
834 | } | |
bb556f1f | 835 | |
52d214d3 TT |
836 | inst_count -= pcs.size (); |
837 | *inst_read += pcs.size (); | |
bb556f1f TK |
838 | } |
839 | while (inst_count > 0); | |
840 | ||
841 | /* After the loop, the vector PCS has instruction addresses of the last | |
842 | source line we processed, and INST_COUNT has a negative value. | |
843 | We return the address at the index of -INST_COUNT in the vector for | |
844 | the reason below. | |
845 | Let's assume the following instruction addresses and run 'x/-4i 0x400e'. | |
846 | Line X of File | |
dda83cd7 SM |
847 | 0x4000 |
848 | 0x4001 | |
849 | 0x4005 | |
bb556f1f | 850 | Line Y of File |
dda83cd7 SM |
851 | 0x4009 |
852 | 0x400c | |
bb556f1f | 853 | => 0x400e |
dda83cd7 | 854 | 0x4011 |
bb556f1f TK |
855 | find_instruction_backward is called with INST_COUNT = 4 and expected to |
856 | return 0x4001. When we reach here, INST_COUNT is set to -1 because | |
857 | it was subtracted by 2 (from Line Y) and 3 (from Line X). The value | |
858 | 4001 is located at the index 1 of the last iterated line (= Line X), | |
859 | which is simply calculated by -INST_COUNT. | |
860 | The case when the length of PCS is 0 means that we reached an area for | |
861 | which line info is not available. In such case, we return LOOP_START, | |
862 | which was the lowest instruction address that had line info. */ | |
52d214d3 | 863 | p = pcs.size () > 0 ? pcs[-inst_count] : loop_start; |
bb556f1f TK |
864 | |
865 | /* INST_READ includes all instruction addresses in a pc range. Need to | |
866 | exclude the beginning part up to the address we're returning. That | |
867 | is, exclude {0x4000} in the example above. */ | |
868 | if (inst_count < 0) | |
869 | *inst_read += inst_count; | |
870 | ||
bb556f1f TK |
871 | return p; |
872 | } | |
873 | ||
874 | /* Backward read LEN bytes of target memory from address MEMADDR + LEN, | |
875 | placing the results in GDB's memory from MYADDR + LEN. Returns | |
876 | a count of the bytes actually read. */ | |
877 | ||
878 | static int | |
879 | read_memory_backward (struct gdbarch *gdbarch, | |
dda83cd7 | 880 | CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
bb556f1f TK |
881 | { |
882 | int errcode; | |
883 | int nread; /* Number of bytes actually read. */ | |
884 | ||
885 | /* First try a complete read. */ | |
886 | errcode = target_read_memory (memaddr, myaddr, len); | |
887 | if (errcode == 0) | |
888 | { | |
889 | /* Got it all. */ | |
890 | nread = len; | |
891 | } | |
892 | else | |
893 | { | |
894 | /* Loop, reading one byte at a time until we get as much as we can. */ | |
895 | memaddr += len; | |
896 | myaddr += len; | |
897 | for (nread = 0; nread < len; ++nread) | |
dda83cd7 SM |
898 | { |
899 | errcode = target_read_memory (--memaddr, --myaddr, 1); | |
900 | if (errcode != 0) | |
901 | { | |
902 | /* The read was unsuccessful, so exit the loop. */ | |
903 | printf_filtered (_("Cannot access memory at address %s\n"), | |
904 | paddress (gdbarch, memaddr)); | |
905 | break; | |
906 | } | |
907 | } | |
bb556f1f TK |
908 | } |
909 | return nread; | |
910 | } | |
911 | ||
912 | /* Returns true if X (which is LEN bytes wide) is the number zero. */ | |
913 | ||
914 | static int | |
915 | integer_is_zero (const gdb_byte *x, int len) | |
916 | { | |
917 | int i = 0; | |
918 | ||
919 | while (i < len && x[i] == 0) | |
920 | ++i; | |
921 | return (i == len); | |
922 | } | |
923 | ||
924 | /* Find the start address of a string in which ADDR is included. | |
925 | Basically we search for '\0' and return the next address, | |
926 | but if OPTIONS->PRINT_MAX is smaller than the length of a string, | |
927 | we stop searching and return the address to print characters as many as | |
928 | PRINT_MAX from the string. */ | |
929 | ||
930 | static CORE_ADDR | |
931 | find_string_backward (struct gdbarch *gdbarch, | |
dda83cd7 SM |
932 | CORE_ADDR addr, int count, int char_size, |
933 | const struct value_print_options *options, | |
934 | int *strings_counted) | |
bb556f1f TK |
935 | { |
936 | const int chunk_size = 0x20; | |
bb556f1f TK |
937 | int read_error = 0; |
938 | int chars_read = 0; | |
939 | int chars_to_read = chunk_size; | |
940 | int chars_counted = 0; | |
941 | int count_original = count; | |
942 | CORE_ADDR string_start_addr = addr; | |
943 | ||
944 | gdb_assert (char_size == 1 || char_size == 2 || char_size == 4); | |
26fcd5d7 | 945 | gdb::byte_vector buffer (chars_to_read * char_size); |
bb556f1f TK |
946 | while (count > 0 && read_error == 0) |
947 | { | |
948 | int i; | |
949 | ||
950 | addr -= chars_to_read * char_size; | |
26fcd5d7 | 951 | chars_read = read_memory_backward (gdbarch, addr, buffer.data (), |
dda83cd7 | 952 | chars_to_read * char_size); |
bb556f1f TK |
953 | chars_read /= char_size; |
954 | read_error = (chars_read == chars_to_read) ? 0 : 1; | |
955 | /* Searching for '\0' from the end of buffer in backward direction. */ | |
956 | for (i = 0; i < chars_read && count > 0 ; ++i, ++chars_counted) | |
dda83cd7 SM |
957 | { |
958 | int offset = (chars_to_read - i - 1) * char_size; | |
959 | ||
960 | if (integer_is_zero (&buffer[offset], char_size) | |
961 | || chars_counted == options->print_max) | |
962 | { | |
963 | /* Found '\0' or reached print_max. As OFFSET is the offset to | |
964 | '\0', we add CHAR_SIZE to return the start address of | |
965 | a string. */ | |
966 | --count; | |
967 | string_start_addr = addr + offset + char_size; | |
968 | chars_counted = 0; | |
969 | } | |
970 | } | |
bb556f1f TK |
971 | } |
972 | ||
973 | /* Update STRINGS_COUNTED with the actual number of loaded strings. */ | |
974 | *strings_counted = count_original - count; | |
975 | ||
976 | if (read_error != 0) | |
977 | { | |
978 | /* In error case, STRING_START_ADDR is pointing to the string that | |
dda83cd7 | 979 | was last successfully loaded. Rewind the partially loaded string. */ |
bb556f1f TK |
980 | string_start_addr -= chars_counted * char_size; |
981 | } | |
982 | ||
bb556f1f TK |
983 | return string_start_addr; |
984 | } | |
985 | ||
c906108c SS |
986 | /* Examine data at address ADDR in format FMT. |
987 | Fetch it from memory and print on gdb_stdout. */ | |
988 | ||
989 | static void | |
5d3729b5 | 990 | do_examine (struct format_data fmt, struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 991 | { |
52f0bd74 AC |
992 | char format = 0; |
993 | char size; | |
994 | int count = 1; | |
c906108c | 995 | struct type *val_type = NULL; |
52f0bd74 AC |
996 | int i; |
997 | int maxelts; | |
79a45b7d | 998 | struct value_print_options opts; |
bb556f1f TK |
999 | int need_to_update_next_address = 0; |
1000 | CORE_ADDR addr_rewound = 0; | |
c906108c SS |
1001 | |
1002 | format = fmt.format; | |
1003 | size = fmt.size; | |
1004 | count = fmt.count; | |
5d3729b5 | 1005 | next_gdbarch = gdbarch; |
c906108c | 1006 | next_address = addr; |
c906108c | 1007 | |
9a22f0d0 PM |
1008 | /* Instruction format implies fetch single bytes |
1009 | regardless of the specified size. | |
1010 | The case of strings is handled in decode_format, only explicit | |
1011 | size operator are not changed to 'b'. */ | |
1012 | if (format == 'i') | |
c906108c SS |
1013 | size = 'b'; |
1014 | ||
5d3729b5 UW |
1015 | if (size == 'a') |
1016 | { | |
1017 | /* Pick the appropriate size for an address. */ | |
1018 | if (gdbarch_ptr_bit (next_gdbarch) == 64) | |
1019 | size = 'g'; | |
1020 | else if (gdbarch_ptr_bit (next_gdbarch) == 32) | |
1021 | size = 'w'; | |
1022 | else if (gdbarch_ptr_bit (next_gdbarch) == 16) | |
1023 | size = 'h'; | |
1024 | else | |
1025 | /* Bad value for gdbarch_ptr_bit. */ | |
1026 | internal_error (__FILE__, __LINE__, | |
1027 | _("failed internal consistency check")); | |
1028 | } | |
1029 | ||
1030 | if (size == 'b') | |
df4df182 | 1031 | val_type = builtin_type (next_gdbarch)->builtin_int8; |
c906108c | 1032 | else if (size == 'h') |
df4df182 | 1033 | val_type = builtin_type (next_gdbarch)->builtin_int16; |
c906108c | 1034 | else if (size == 'w') |
df4df182 | 1035 | val_type = builtin_type (next_gdbarch)->builtin_int32; |
c906108c | 1036 | else if (size == 'g') |
df4df182 | 1037 | val_type = builtin_type (next_gdbarch)->builtin_int64; |
c906108c | 1038 | |
9a22f0d0 PM |
1039 | if (format == 's') |
1040 | { | |
1041 | struct type *char_type = NULL; | |
ad3bbd48 | 1042 | |
9a22f0d0 PM |
1043 | /* Search for "char16_t" or "char32_t" types or fall back to 8-bit char |
1044 | if type is not found. */ | |
1045 | if (size == 'h') | |
1046 | char_type = builtin_type (next_gdbarch)->builtin_char16; | |
1047 | else if (size == 'w') | |
1048 | char_type = builtin_type (next_gdbarch)->builtin_char32; | |
1049 | if (char_type) | |
dda83cd7 | 1050 | val_type = char_type; |
9a22f0d0 | 1051 | else |
dda83cd7 | 1052 | { |
9a22f0d0 | 1053 | if (size != '\0' && size != 'b') |
0df8b418 MS |
1054 | warning (_("Unable to display strings with " |
1055 | "size '%c', using 'b' instead."), size); | |
9a22f0d0 PM |
1056 | size = 'b'; |
1057 | val_type = builtin_type (next_gdbarch)->builtin_int8; | |
dda83cd7 | 1058 | } |
9a22f0d0 PM |
1059 | } |
1060 | ||
c906108c SS |
1061 | maxelts = 8; |
1062 | if (size == 'w') | |
1063 | maxelts = 4; | |
1064 | if (size == 'g') | |
1065 | maxelts = 2; | |
1066 | if (format == 's' || format == 'i') | |
1067 | maxelts = 1; | |
1068 | ||
79a45b7d TT |
1069 | get_formatted_print_options (&opts, format); |
1070 | ||
bb556f1f TK |
1071 | if (count < 0) |
1072 | { | |
1073 | /* This is the negative repeat count case. | |
dda83cd7 SM |
1074 | We rewind the address based on the given repeat count and format, |
1075 | then examine memory from there in forward direction. */ | |
bb556f1f TK |
1076 | |
1077 | count = -count; | |
1078 | if (format == 'i') | |
dda83cd7 SM |
1079 | { |
1080 | next_address = find_instruction_backward (gdbarch, addr, count, | |
1081 | &count); | |
1082 | } | |
bb556f1f | 1083 | else if (format == 's') |
dda83cd7 SM |
1084 | { |
1085 | next_address = find_string_backward (gdbarch, addr, count, | |
1086 | TYPE_LENGTH (val_type), | |
1087 | &opts, &count); | |
1088 | } | |
bb556f1f | 1089 | else |
dda83cd7 SM |
1090 | { |
1091 | next_address = addr - count * TYPE_LENGTH (val_type); | |
1092 | } | |
bb556f1f TK |
1093 | |
1094 | /* The following call to print_formatted updates next_address in every | |
dda83cd7 SM |
1095 | iteration. In backward case, we store the start address here |
1096 | and update next_address with it before exiting the function. */ | |
bb556f1f | 1097 | addr_rewound = (format == 's' |
dda83cd7 SM |
1098 | ? next_address - TYPE_LENGTH (val_type) |
1099 | : next_address); | |
bb556f1f TK |
1100 | need_to_update_next_address = 1; |
1101 | } | |
1102 | ||
c906108c SS |
1103 | /* Print as many objects as specified in COUNT, at most maxelts per line, |
1104 | with the address of the next one at the start of each line. */ | |
1105 | ||
1106 | while (count > 0) | |
1107 | { | |
1108 | QUIT; | |
2b28d209 PP |
1109 | if (format == 'i') |
1110 | fputs_filtered (pc_prefix (next_address), gdb_stdout); | |
5af949e3 | 1111 | print_address (next_gdbarch, next_address, gdb_stdout); |
c906108c SS |
1112 | printf_filtered (":"); |
1113 | for (i = maxelts; | |
1114 | i > 0 && count > 0; | |
1115 | i--, count--) | |
1116 | { | |
1117 | printf_filtered ("\t"); | |
1118 | /* Note that print_formatted sets next_address for the next | |
1119 | object. */ | |
1120 | last_examine_address = next_address; | |
1121 | ||
c906108c | 1122 | /* The value to be displayed is not fetched greedily. |
5d51a2db MR |
1123 | Instead, to avoid the possibility of a fetched value not |
1124 | being used, its retrieval is delayed until the print code | |
c5aa993b JM |
1125 | uses it. When examining an instruction stream, the |
1126 | disassembler will perform its own memory fetch using just | |
1127 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
1128 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
1129 | is left with the byte sequence from the last complete | |
0df8b418 | 1130 | instruction fetched from memory? */ |
9b558729 TT |
1131 | last_examine_value |
1132 | = release_value (value_at_lazy (val_type, next_address)); | |
c906108c | 1133 | |
9b558729 | 1134 | print_formatted (last_examine_value.get (), size, &opts, gdb_stdout); |
a4642986 MR |
1135 | |
1136 | /* Display any branch delay slots following the final insn. */ | |
1137 | if (format == 'i' && count == 1) | |
1138 | count += branch_delay_insns; | |
c906108c SS |
1139 | } |
1140 | printf_filtered ("\n"); | |
c906108c | 1141 | } |
bb556f1f TK |
1142 | |
1143 | if (need_to_update_next_address) | |
1144 | next_address = addr_rewound; | |
c906108c SS |
1145 | } |
1146 | \f | |
1147 | static void | |
8d89f51a | 1148 | validate_format (struct format_data fmt, const char *cmdname) |
c906108c SS |
1149 | { |
1150 | if (fmt.size != 0) | |
8a3fe4f8 | 1151 | error (_("Size letters are meaningless in \"%s\" command."), cmdname); |
c906108c | 1152 | if (fmt.count != 1) |
8a3fe4f8 | 1153 | error (_("Item count other than 1 is meaningless in \"%s\" command."), |
c906108c | 1154 | cmdname); |
ea37ba09 | 1155 | if (fmt.format == 'i') |
8a3fe4f8 | 1156 | error (_("Format letter \"%c\" is meaningless in \"%s\" command."), |
c906108c SS |
1157 | fmt.format, cmdname); |
1158 | } | |
1159 | ||
7d8062de | 1160 | /* Parse print command format string into *OPTS and update *EXPP. |
1c88ceb1 JK |
1161 | CMDNAME should name the current command. */ |
1162 | ||
1163 | void | |
1164 | print_command_parse_format (const char **expp, const char *cmdname, | |
7d8062de | 1165 | value_print_options *opts) |
1c88ceb1 JK |
1166 | { |
1167 | const char *exp = *expp; | |
1168 | ||
d8edc8b7 PW |
1169 | /* opts->raw value might already have been set by 'set print raw-values' |
1170 | or by using 'print -raw-values'. | |
1171 | So, do not set opts->raw to 0, only set it to 1 if /r is given. */ | |
1c88ceb1 JK |
1172 | if (exp && *exp == '/') |
1173 | { | |
7d8062de PA |
1174 | format_data fmt; |
1175 | ||
1c88ceb1 | 1176 | exp++; |
7d8062de PA |
1177 | fmt = decode_format (&exp, last_format, 0); |
1178 | validate_format (fmt, cmdname); | |
1179 | last_format = fmt.format; | |
1180 | ||
1181 | opts->format = fmt.format; | |
d8edc8b7 | 1182 | opts->raw = opts->raw || fmt.raw; |
1c88ceb1 JK |
1183 | } |
1184 | else | |
1185 | { | |
7d8062de | 1186 | opts->format = 0; |
1c88ceb1 JK |
1187 | } |
1188 | ||
1189 | *expp = exp; | |
1190 | } | |
1191 | ||
7d8062de | 1192 | /* See valprint.h. */ |
1c88ceb1 JK |
1193 | |
1194 | void | |
7d8062de | 1195 | print_value (value *val, const value_print_options &opts) |
1c88ceb1 | 1196 | { |
1c88ceb1 JK |
1197 | int histindex = record_latest_value (val); |
1198 | ||
1199 | annotate_value_history_begin (histindex, value_type (val)); | |
1200 | ||
1201 | printf_filtered ("$%d = ", histindex); | |
1202 | ||
1203 | annotate_value_history_value (); | |
1204 | ||
7d8062de | 1205 | print_formatted (val, 0, &opts, gdb_stdout); |
1c88ceb1 JK |
1206 | printf_filtered ("\n"); |
1207 | ||
1208 | annotate_value_history_end (); | |
1209 | } | |
1210 | ||
48136e00 | 1211 | /* Helper for parsing arguments for print_command_1. */ |
c906108c | 1212 | |
48136e00 LM |
1213 | static struct value * |
1214 | process_print_command_args (const char *args, value_print_options *print_opts, | |
1215 | bool voidprint) | |
c906108c | 1216 | { |
48136e00 | 1217 | get_user_print_options (print_opts); |
7d8062de | 1218 | /* Override global settings with explicit options, if any. */ |
48136e00 | 1219 | auto group = make_value_print_options_def_group (print_opts); |
7d8062de PA |
1220 | gdb::option::process_options |
1221 | (&args, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group); | |
1222 | ||
48136e00 | 1223 | print_command_parse_format (&args, "print", print_opts); |
c906108c | 1224 | |
7d8062de | 1225 | const char *exp = args; |
c906108c | 1226 | |
7d8062de | 1227 | if (exp != nullptr && *exp) |
c906108c | 1228 | { |
8fc48b79 TT |
1229 | /* VOIDPRINT is true to indicate that we do want to print a void |
1230 | value, so invert it for parse_expression. */ | |
1231 | expression_up expr = parse_expression (exp, nullptr, !voidprint); | |
48136e00 | 1232 | return evaluate_expression (expr.get ()); |
c906108c | 1233 | } |
48136e00 LM |
1234 | |
1235 | return access_value_history (0); | |
1236 | } | |
1237 | ||
1238 | /* Implementation of the "print" and "call" commands. */ | |
1239 | ||
1240 | static void | |
1241 | print_command_1 (const char *args, int voidprint) | |
1242 | { | |
1243 | value_print_options print_opts; | |
1244 | ||
1245 | struct value *val = process_print_command_args (args, &print_opts, voidprint); | |
c906108c | 1246 | |
df407dfe | 1247 | if (voidprint || (val && value_type (val) && |
78134374 | 1248 | value_type (val)->code () != TYPE_CODE_VOID)) |
7d8062de PA |
1249 | print_value (val, print_opts); |
1250 | } | |
1251 | ||
037d7135 AB |
1252 | /* Called from command completion function to skip over /FMT |
1253 | specifications, allowing the rest of the line to be completed. Returns | |
1254 | true if the /FMT is at the end of the current line and there is nothing | |
1255 | left to complete, otherwise false is returned. | |
1256 | ||
1257 | In either case *ARGS can be updated to point after any part of /FMT that | |
1258 | is present. | |
1259 | ||
1260 | This function is designed so that trying to complete '/' will offer no | |
1261 | completions, the user needs to insert the format specification | |
1262 | themselves. Trying to complete '/FMT' (where FMT is any non-empty set | |
1263 | of alpha-numeric characters) will cause readline to insert a single | |
1264 | space, setting the user up to enter the expression. */ | |
1265 | ||
1266 | static bool | |
1267 | skip_over_slash_fmt (completion_tracker &tracker, const char **args) | |
1268 | { | |
1269 | const char *text = *args; | |
1270 | ||
1271 | if (text[0] == '/') | |
1272 | { | |
1273 | bool in_fmt; | |
1274 | tracker.set_use_custom_word_point (true); | |
1275 | ||
3df8c6af | 1276 | if (text[1] == '\0') |
037d7135 | 1277 | { |
3df8c6af AB |
1278 | /* The user tried to complete after typing just the '/' character |
1279 | of the /FMT string. Step the completer past the '/', but we | |
1280 | don't offer any completions. */ | |
1281 | in_fmt = true; | |
1282 | ++text; | |
1283 | } | |
1284 | else | |
1285 | { | |
1286 | /* The user has typed some characters after the '/', we assume | |
1287 | this is a complete /FMT string, first skip over it. */ | |
b3ff61f8 | 1288 | text = skip_to_space (text); |
037d7135 AB |
1289 | |
1290 | if (*text == '\0') | |
1291 | { | |
3df8c6af AB |
1292 | /* We're at the end of the input string. The user has typed |
1293 | '/FMT' and asked for a completion. Push an empty | |
1294 | completion string, this will cause readline to insert a | |
1295 | space so the user now has '/FMT '. */ | |
037d7135 AB |
1296 | in_fmt = true; |
1297 | tracker.add_completion (make_unique_xstrdup (text)); | |
1298 | } | |
1299 | else | |
1300 | { | |
3df8c6af AB |
1301 | /* The user has already typed things after the /FMT, skip the |
1302 | whitespace and return false. Whoever called this function | |
1303 | should then try to complete what comes next. */ | |
037d7135 | 1304 | in_fmt = false; |
b3ff61f8 | 1305 | text = skip_spaces (text); |
037d7135 AB |
1306 | } |
1307 | } | |
037d7135 AB |
1308 | |
1309 | tracker.advance_custom_word_point_by (text - *args); | |
1310 | *args = text; | |
1311 | return in_fmt; | |
1312 | } | |
1313 | ||
1314 | return false; | |
1315 | } | |
1316 | ||
7d8062de PA |
1317 | /* See valprint.h. */ |
1318 | ||
1319 | void | |
1320 | print_command_completer (struct cmd_list_element *ignore, | |
1321 | completion_tracker &tracker, | |
1322 | const char *text, const char * /*word*/) | |
1323 | { | |
1324 | const auto group = make_value_print_options_def_group (nullptr); | |
1325 | if (gdb::option::complete_options | |
1326 | (tracker, &text, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group)) | |
1327 | return; | |
1328 | ||
037d7135 AB |
1329 | if (skip_over_slash_fmt (tracker, &text)) |
1330 | return; | |
1331 | ||
7d8062de PA |
1332 | const char *word = advance_to_expression_complete_word_point (tracker, text); |
1333 | expression_completer (ignore, tracker, text, word); | |
c906108c SS |
1334 | } |
1335 | ||
c906108c | 1336 | static void |
0b39b52e | 1337 | print_command (const char *exp, int from_tty) |
c906108c | 1338 | { |
8fc48b79 | 1339 | print_command_1 (exp, true); |
c906108c SS |
1340 | } |
1341 | ||
675dcf4f | 1342 | /* Same as print, except it doesn't print void results. */ |
c906108c | 1343 | static void |
0b39b52e | 1344 | call_command (const char *exp, int from_tty) |
c906108c | 1345 | { |
8fc48b79 | 1346 | print_command_1 (exp, false); |
c906108c SS |
1347 | } |
1348 | ||
6f937416 PA |
1349 | /* Implementation of the "output" command. */ |
1350 | ||
6f937416 | 1351 | void |
122b53ea | 1352 | output_command (const char *exp, int from_tty) |
c906108c | 1353 | { |
52f0bd74 | 1354 | char format = 0; |
3d6d86c6 | 1355 | struct value *val; |
c906108c | 1356 | struct format_data fmt; |
79a45b7d | 1357 | struct value_print_options opts; |
c906108c | 1358 | |
777ea8f1 | 1359 | fmt.size = 0; |
a6bac58e | 1360 | fmt.raw = 0; |
777ea8f1 | 1361 | |
c906108c SS |
1362 | if (exp && *exp == '/') |
1363 | { | |
1364 | exp++; | |
1365 | fmt = decode_format (&exp, 0, 0); | |
1366 | validate_format (fmt, "output"); | |
1367 | format = fmt.format; | |
1368 | } | |
1369 | ||
4d01a485 | 1370 | expression_up expr = parse_expression (exp); |
c906108c | 1371 | |
4d01a485 | 1372 | val = evaluate_expression (expr.get ()); |
c906108c | 1373 | |
df407dfe | 1374 | annotate_value_begin (value_type (val)); |
c906108c | 1375 | |
79a45b7d | 1376 | get_formatted_print_options (&opts, format); |
a6bac58e | 1377 | opts.raw = fmt.raw; |
79a45b7d | 1378 | print_formatted (val, fmt.size, &opts, gdb_stdout); |
c906108c SS |
1379 | |
1380 | annotate_value_end (); | |
1381 | ||
2acceee2 JM |
1382 | wrap_here (""); |
1383 | gdb_flush (gdb_stdout); | |
c906108c SS |
1384 | } |
1385 | ||
c906108c | 1386 | static void |
981a3fb3 | 1387 | set_command (const char *exp, int from_tty) |
c906108c | 1388 | { |
4d01a485 | 1389 | expression_up expr = parse_expression (exp); |
ad3bbd48 | 1390 | |
3dd93bf8 TT |
1391 | switch (expr->op->opcode ()) |
1392 | { | |
1393 | case UNOP_PREINCREMENT: | |
1394 | case UNOP_POSTINCREMENT: | |
1395 | case UNOP_PREDECREMENT: | |
1396 | case UNOP_POSTDECREMENT: | |
1397 | case BINOP_ASSIGN: | |
1398 | case BINOP_ASSIGN_MODIFY: | |
1399 | case BINOP_COMMA: | |
1400 | break; | |
1401 | default: | |
1402 | warning | |
1403 | (_("Expression is not an assignment (and might have no effect)")); | |
1404 | } | |
52b3699b | 1405 | |
4d01a485 | 1406 | evaluate_expression (expr.get ()); |
c906108c SS |
1407 | } |
1408 | ||
c906108c | 1409 | static void |
1d12d88f | 1410 | info_symbol_command (const char *arg, int from_tty) |
c906108c SS |
1411 | { |
1412 | struct minimal_symbol *msymbol; | |
c5aa993b | 1413 | struct obj_section *osect; |
c5aa993b JM |
1414 | CORE_ADDR addr, sect_addr; |
1415 | int matches = 0; | |
1416 | unsigned int offset; | |
c906108c SS |
1417 | |
1418 | if (!arg) | |
e2e0b3e5 | 1419 | error_no_arg (_("address")); |
c906108c SS |
1420 | |
1421 | addr = parse_and_eval_address (arg); | |
2030c079 | 1422 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 | 1423 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
c5aa993b | 1424 | { |
3b9d3ac2 TT |
1425 | /* Only process each object file once, even if there's a separate |
1426 | debug file. */ | |
1427 | if (objfile->separate_debug_objfile_backlink) | |
1428 | continue; | |
1429 | ||
1430 | sect_addr = overlay_mapped_address (addr, osect); | |
1431 | ||
1432 | if (obj_section_addr (osect) <= sect_addr | |
1433 | && sect_addr < obj_section_endaddr (osect) | |
1434 | && (msymbol | |
1435 | = lookup_minimal_symbol_by_pc_section (sect_addr, | |
1436 | osect).minsym)) | |
5178ed48 | 1437 | { |
3b9d3ac2 TT |
1438 | const char *obj_name, *mapped, *sec_name, *msym_name; |
1439 | const char *loc_string; | |
1440 | ||
1441 | matches = 1; | |
1442 | offset = sect_addr - MSYMBOL_VALUE_ADDRESS (objfile, msymbol); | |
1443 | mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped"); | |
1444 | sec_name = osect->the_bfd_section->name; | |
c9d95fa3 | 1445 | msym_name = msymbol->print_name (); |
3b9d3ac2 TT |
1446 | |
1447 | /* Don't print the offset if it is zero. | |
1448 | We assume there's no need to handle i18n of "sym + offset". */ | |
1449 | std::string string_holder; | |
1450 | if (offset) | |
1451 | { | |
1452 | string_holder = string_printf ("%s + %u", msym_name, offset); | |
1453 | loc_string = string_holder.c_str (); | |
1454 | } | |
c14c28ba | 1455 | else |
3b9d3ac2 TT |
1456 | loc_string = msym_name; |
1457 | ||
1458 | gdb_assert (osect->objfile && objfile_name (osect->objfile)); | |
1459 | obj_name = objfile_name (osect->objfile); | |
1460 | ||
deeafabb | 1461 | if (current_program_space->multi_objfile_p ()) |
3b9d3ac2 TT |
1462 | if (pc_in_unmapped_range (addr, osect)) |
1463 | if (section_is_overlay (osect)) | |
1464 | printf_filtered (_("%s in load address range of " | |
1465 | "%s overlay section %s of %s\n"), | |
1466 | loc_string, mapped, sec_name, obj_name); | |
1467 | else | |
1468 | printf_filtered (_("%s in load address range of " | |
1469 | "section %s of %s\n"), | |
1470 | loc_string, sec_name, obj_name); | |
1471 | else | |
1472 | if (section_is_overlay (osect)) | |
1473 | printf_filtered (_("%s in %s overlay section %s of %s\n"), | |
1474 | loc_string, mapped, sec_name, obj_name); | |
1475 | else | |
1476 | printf_filtered (_("%s in section %s of %s\n"), | |
1477 | loc_string, sec_name, obj_name); | |
c14c28ba | 1478 | else |
3b9d3ac2 TT |
1479 | if (pc_in_unmapped_range (addr, osect)) |
1480 | if (section_is_overlay (osect)) | |
1481 | printf_filtered (_("%s in load address range of %s overlay " | |
1482 | "section %s\n"), | |
1483 | loc_string, mapped, sec_name); | |
1484 | else | |
1485 | printf_filtered | |
1486 | (_("%s in load address range of section %s\n"), | |
1487 | loc_string, sec_name); | |
1488 | else | |
1489 | if (section_is_overlay (osect)) | |
1490 | printf_filtered (_("%s in %s overlay section %s\n"), | |
1491 | loc_string, mapped, sec_name); | |
1492 | else | |
1493 | printf_filtered (_("%s in section %s\n"), | |
1494 | loc_string, sec_name); | |
1495 | } | |
c5aa993b | 1496 | } |
c906108c | 1497 | if (matches == 0) |
a3f17187 | 1498 | printf_filtered (_("No symbol matches %s.\n"), arg); |
c906108c SS |
1499 | } |
1500 | ||
c906108c | 1501 | static void |
1d12d88f | 1502 | info_address_command (const char *exp, int from_tty) |
c906108c | 1503 | { |
768a979c UW |
1504 | struct gdbarch *gdbarch; |
1505 | int regno; | |
52f0bd74 | 1506 | struct symbol *sym; |
7c7b6655 | 1507 | struct bound_minimal_symbol msymbol; |
52f0bd74 | 1508 | long val; |
714835d5 | 1509 | struct obj_section *section; |
08922a10 | 1510 | CORE_ADDR load_addr, context_pc = 0; |
1993b719 | 1511 | struct field_of_this_result is_a_field_of_this; |
c906108c SS |
1512 | |
1513 | if (exp == 0) | |
8a3fe4f8 | 1514 | error (_("Argument required.")); |
c906108c | 1515 | |
08922a10 | 1516 | sym = lookup_symbol (exp, get_selected_block (&context_pc), VAR_DOMAIN, |
d12307c1 | 1517 | &is_a_field_of_this).symbol; |
c906108c SS |
1518 | if (sym == NULL) |
1519 | { | |
1993b719 | 1520 | if (is_a_field_of_this.type != NULL) |
c906108c SS |
1521 | { |
1522 | printf_filtered ("Symbol \""); | |
1523 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1524 | current_language->la_language, DMGL_ANSI); | |
e2b23ee9 AF |
1525 | printf_filtered ("\" is a field of the local class variable "); |
1526 | if (current_language->la_language == language_objc) | |
2625d86c | 1527 | printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */ |
e2b23ee9 | 1528 | else |
2625d86c | 1529 | printf_filtered ("`this'\n"); |
c906108c SS |
1530 | return; |
1531 | } | |
1532 | ||
7c7b6655 | 1533 | msymbol = lookup_bound_minimal_symbol (exp); |
c906108c | 1534 | |
7c7b6655 | 1535 | if (msymbol.minsym != NULL) |
c906108c | 1536 | { |
7c7b6655 | 1537 | struct objfile *objfile = msymbol.objfile; |
e27d198c | 1538 | |
08feed99 | 1539 | gdbarch = objfile->arch (); |
77e371c0 | 1540 | load_addr = BMSYMBOL_VALUE_ADDRESS (msymbol); |
c906108c SS |
1541 | |
1542 | printf_filtered ("Symbol \""); | |
1543 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1544 | current_language->la_language, DMGL_ANSI); | |
1545 | printf_filtered ("\" is at "); | |
35fb8261 TT |
1546 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1547 | gdb_stdout); | |
c906108c | 1548 | printf_filtered (" in a file compiled without debugging"); |
ebbc3a7d | 1549 | section = msymbol.minsym->obj_section (objfile); |
c906108c SS |
1550 | if (section_is_overlay (section)) |
1551 | { | |
1552 | load_addr = overlay_unmapped_address (load_addr, section); | |
1553 | printf_filtered (",\n -- loaded at "); | |
35fb8261 TT |
1554 | fputs_styled (paddress (gdbarch, load_addr), |
1555 | address_style.style (), | |
1556 | gdb_stdout); | |
714835d5 UW |
1557 | printf_filtered (" in overlay section %s", |
1558 | section->the_bfd_section->name); | |
c906108c SS |
1559 | } |
1560 | printf_filtered (".\n"); | |
1561 | } | |
1562 | else | |
8a3fe4f8 | 1563 | error (_("No symbol \"%s\" in current context."), exp); |
c906108c SS |
1564 | return; |
1565 | } | |
1566 | ||
1567 | printf_filtered ("Symbol \""); | |
987012b8 | 1568 | fprintf_symbol_filtered (gdb_stdout, sym->print_name (), |
c906108c SS |
1569 | current_language->la_language, DMGL_ANSI); |
1570 | printf_filtered ("\" is "); | |
c5aa993b | 1571 | val = SYMBOL_VALUE (sym); |
1994afbf | 1572 | if (SYMBOL_OBJFILE_OWNED (sym)) |
ebbc3a7d | 1573 | section = sym->obj_section (symbol_objfile (sym)); |
1994afbf DE |
1574 | else |
1575 | section = NULL; | |
08be3fe3 | 1576 | gdbarch = symbol_arch (sym); |
c906108c | 1577 | |
24d6c2a0 TT |
1578 | if (SYMBOL_COMPUTED_OPS (sym) != NULL) |
1579 | { | |
1580 | SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, context_pc, | |
1581 | gdb_stdout); | |
1582 | printf_filtered (".\n"); | |
1583 | return; | |
1584 | } | |
1585 | ||
c906108c SS |
1586 | switch (SYMBOL_CLASS (sym)) |
1587 | { | |
1588 | case LOC_CONST: | |
1589 | case LOC_CONST_BYTES: | |
1590 | printf_filtered ("constant"); | |
1591 | break; | |
1592 | ||
1593 | case LOC_LABEL: | |
1594 | printf_filtered ("a label at address "); | |
5af949e3 | 1595 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
35fb8261 TT |
1596 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1597 | gdb_stdout); | |
c906108c SS |
1598 | if (section_is_overlay (section)) |
1599 | { | |
1600 | load_addr = overlay_unmapped_address (load_addr, section); | |
1601 | printf_filtered (",\n -- loaded at "); | |
35fb8261 TT |
1602 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1603 | gdb_stdout); | |
714835d5 UW |
1604 | printf_filtered (" in overlay section %s", |
1605 | section->the_bfd_section->name); | |
c906108c SS |
1606 | } |
1607 | break; | |
1608 | ||
4c2df51b | 1609 | case LOC_COMPUTED: |
24d6c2a0 | 1610 | gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method")); |
4c2df51b | 1611 | |
c906108c | 1612 | case LOC_REGISTER: |
768a979c UW |
1613 | /* GDBARCH is the architecture associated with the objfile the symbol |
1614 | is defined in; the target architecture may be different, and may | |
1615 | provide additional registers. However, we do not know the target | |
1616 | architecture at this point. We assume the objfile architecture | |
1617 | will contain all the standard registers that occur in debug info | |
1618 | in that objfile. */ | |
1619 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
1620 | ||
2a2d4dc3 AS |
1621 | if (SYMBOL_IS_ARGUMENT (sym)) |
1622 | printf_filtered (_("an argument in register %s"), | |
768a979c | 1623 | gdbarch_register_name (gdbarch, regno)); |
2a2d4dc3 AS |
1624 | else |
1625 | printf_filtered (_("a variable in register %s"), | |
768a979c | 1626 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1627 | break; |
1628 | ||
1629 | case LOC_STATIC: | |
a3f17187 | 1630 | printf_filtered (_("static storage at address ")); |
5af949e3 | 1631 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
35fb8261 TT |
1632 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1633 | gdb_stdout); | |
c906108c SS |
1634 | if (section_is_overlay (section)) |
1635 | { | |
1636 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1637 | printf_filtered (_(",\n -- loaded at ")); |
35fb8261 TT |
1638 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1639 | gdb_stdout); | |
714835d5 UW |
1640 | printf_filtered (_(" in overlay section %s"), |
1641 | section->the_bfd_section->name); | |
c906108c SS |
1642 | } |
1643 | break; | |
1644 | ||
c906108c | 1645 | case LOC_REGPARM_ADDR: |
768a979c UW |
1646 | /* Note comment at LOC_REGISTER. */ |
1647 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
675dcf4f | 1648 | printf_filtered (_("address of an argument in register %s"), |
768a979c | 1649 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1650 | break; |
1651 | ||
1652 | case LOC_ARG: | |
a3f17187 | 1653 | printf_filtered (_("an argument at offset %ld"), val); |
c906108c SS |
1654 | break; |
1655 | ||
c906108c | 1656 | case LOC_LOCAL: |
a3f17187 | 1657 | printf_filtered (_("a local variable at frame offset %ld"), val); |
c906108c SS |
1658 | break; |
1659 | ||
1660 | case LOC_REF_ARG: | |
a3f17187 | 1661 | printf_filtered (_("a reference argument at offset %ld"), val); |
c906108c SS |
1662 | break; |
1663 | ||
c906108c | 1664 | case LOC_TYPEDEF: |
a3f17187 | 1665 | printf_filtered (_("a typedef")); |
c906108c SS |
1666 | break; |
1667 | ||
1668 | case LOC_BLOCK: | |
a3f17187 | 1669 | printf_filtered (_("a function at address ")); |
2b1ffcfd | 1670 | load_addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
35fb8261 TT |
1671 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1672 | gdb_stdout); | |
c906108c SS |
1673 | if (section_is_overlay (section)) |
1674 | { | |
1675 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1676 | printf_filtered (_(",\n -- loaded at ")); |
35fb8261 TT |
1677 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1678 | gdb_stdout); | |
714835d5 UW |
1679 | printf_filtered (_(" in overlay section %s"), |
1680 | section->the_bfd_section->name); | |
c906108c SS |
1681 | } |
1682 | break; | |
1683 | ||
1684 | case LOC_UNRESOLVED: | |
1685 | { | |
e27d198c | 1686 | struct bound_minimal_symbol msym; |
c906108c | 1687 | |
987012b8 | 1688 | msym = lookup_bound_minimal_symbol (sym->linkage_name ()); |
e27d198c | 1689 | if (msym.minsym == NULL) |
c906108c SS |
1690 | printf_filtered ("unresolved"); |
1691 | else | |
1692 | { | |
1db66e34 | 1693 | section = msym.obj_section (); |
e0740f77 JK |
1694 | |
1695 | if (section | |
1696 | && (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0) | |
5382cfab PW |
1697 | { |
1698 | load_addr = MSYMBOL_VALUE_RAW_ADDRESS (msym.minsym); | |
1699 | printf_filtered (_("a thread-local variable at offset %s " | |
1700 | "in the thread-local storage for `%s'"), | |
1701 | paddress (gdbarch, load_addr), | |
1702 | objfile_name (section->objfile)); | |
1703 | } | |
e0740f77 | 1704 | else |
c906108c | 1705 | { |
5382cfab | 1706 | load_addr = BMSYMBOL_VALUE_ADDRESS (msym); |
e0740f77 | 1707 | printf_filtered (_("static storage at address ")); |
35fb8261 TT |
1708 | fputs_styled (paddress (gdbarch, load_addr), |
1709 | address_style.style (), gdb_stdout); | |
e0740f77 JK |
1710 | if (section_is_overlay (section)) |
1711 | { | |
1712 | load_addr = overlay_unmapped_address (load_addr, section); | |
1713 | printf_filtered (_(",\n -- loaded at ")); | |
35fb8261 TT |
1714 | fputs_styled (paddress (gdbarch, load_addr), |
1715 | address_style.style (), | |
1716 | gdb_stdout); | |
e0740f77 JK |
1717 | printf_filtered (_(" in overlay section %s"), |
1718 | section->the_bfd_section->name); | |
1719 | } | |
c906108c SS |
1720 | } |
1721 | } | |
1722 | } | |
1723 | break; | |
1724 | ||
c906108c | 1725 | case LOC_OPTIMIZED_OUT: |
a3f17187 | 1726 | printf_filtered (_("optimized out")); |
c906108c | 1727 | break; |
c5aa993b | 1728 | |
c906108c | 1729 | default: |
a3f17187 | 1730 | printf_filtered (_("of unknown (botched) type")); |
c906108c SS |
1731 | break; |
1732 | } | |
1733 | printf_filtered (".\n"); | |
1734 | } | |
1735 | \f | |
675dcf4f MK |
1736 | |
1737 | static void | |
0b39b52e | 1738 | x_command (const char *exp, int from_tty) |
c906108c | 1739 | { |
c906108c | 1740 | struct format_data fmt; |
c906108c SS |
1741 | struct value *val; |
1742 | ||
a6bac58e | 1743 | fmt.format = last_format ? last_format : 'x'; |
c906108c SS |
1744 | fmt.size = last_size; |
1745 | fmt.count = 1; | |
a6bac58e | 1746 | fmt.raw = 0; |
c906108c | 1747 | |
9be2ae8f TT |
1748 | /* If there is no expression and no format, use the most recent |
1749 | count. */ | |
1750 | if (exp == nullptr && last_count > 0) | |
1751 | fmt.count = last_count; | |
1752 | ||
c906108c SS |
1753 | if (exp && *exp == '/') |
1754 | { | |
6f937416 PA |
1755 | const char *tmp = exp + 1; |
1756 | ||
1757 | fmt = decode_format (&tmp, last_format, last_size); | |
1758 | exp = (char *) tmp; | |
c906108c SS |
1759 | } |
1760 | ||
9be2ae8f TT |
1761 | last_count = fmt.count; |
1762 | ||
c906108c SS |
1763 | /* If we have an expression, evaluate it and use it as the address. */ |
1764 | ||
1765 | if (exp != 0 && *exp != 0) | |
1766 | { | |
4d01a485 | 1767 | expression_up expr = parse_expression (exp); |
675dcf4f | 1768 | /* Cause expression not to be there any more if this command is |
dda83cd7 SM |
1769 | repeated with Newline. But don't clobber a user-defined |
1770 | command's definition. */ | |
c906108c | 1771 | if (from_tty) |
85c4be7c | 1772 | set_repeat_arguments (""); |
4d01a485 | 1773 | val = evaluate_expression (expr.get ()); |
aa006118 | 1774 | if (TYPE_IS_REFERENCE (value_type (val))) |
e1c34c5d | 1775 | val = coerce_ref (val); |
c906108c | 1776 | /* In rvalue contexts, such as this, functions are coerced into |
dda83cd7 | 1777 | pointers to functions. This makes "x/i main" work. */ |
78134374 | 1778 | if (value_type (val)->code () == TYPE_CODE_FUNC |
c5aa993b | 1779 | && VALUE_LVAL (val) == lval_memory) |
42ae5230 | 1780 | next_address = value_address (val); |
c906108c | 1781 | else |
1aa20aa8 | 1782 | next_address = value_as_address (val); |
5d3729b5 UW |
1783 | |
1784 | next_gdbarch = expr->gdbarch; | |
c906108c SS |
1785 | } |
1786 | ||
5d3729b5 UW |
1787 | if (!next_gdbarch) |
1788 | error_no_arg (_("starting display address")); | |
1789 | ||
1790 | do_examine (fmt, next_gdbarch, next_address); | |
c906108c | 1791 | |
675dcf4f | 1792 | /* If the examine succeeds, we remember its size and format for next |
9a22f0d0 PM |
1793 | time. Set last_size to 'b' for strings. */ |
1794 | if (fmt.format == 's') | |
1795 | last_size = 'b'; | |
1796 | else | |
1797 | last_size = fmt.size; | |
c906108c SS |
1798 | last_format = fmt.format; |
1799 | ||
0df8b418 | 1800 | /* Set a couple of internal variables if appropriate. */ |
9b558729 | 1801 | if (last_examine_value != nullptr) |
c906108c SS |
1802 | { |
1803 | /* Make last address examined available to the user as $_. Use | |
dda83cd7 | 1804 | the correct pointer type. */ |
4478b372 | 1805 | struct type *pointer_type |
9b558729 | 1806 | = lookup_pointer_type (value_type (last_examine_value.get ())); |
c906108c | 1807 | set_internalvar (lookup_internalvar ("_"), |
4478b372 JB |
1808 | value_from_pointer (pointer_type, |
1809 | last_examine_address)); | |
c5aa993b | 1810 | |
675dcf4f MK |
1811 | /* Make contents of last address examined available to the user |
1812 | as $__. If the last value has not been fetched from memory | |
1813 | then don't fetch it now; instead mark it by voiding the $__ | |
1814 | variable. */ | |
9b558729 | 1815 | if (value_lazy (last_examine_value.get ())) |
4fa62494 | 1816 | clear_internalvar (lookup_internalvar ("__")); |
c906108c | 1817 | else |
9b558729 | 1818 | set_internalvar (lookup_internalvar ("__"), last_examine_value.get ()); |
c906108c SS |
1819 | } |
1820 | } | |
037d7135 AB |
1821 | |
1822 | /* Command completion for the 'display' and 'x' commands. */ | |
1823 | ||
1824 | static void | |
1825 | display_and_x_command_completer (struct cmd_list_element *ignore, | |
1826 | completion_tracker &tracker, | |
1827 | const char *text, const char * /*word*/) | |
1828 | { | |
1829 | if (skip_over_slash_fmt (tracker, &text)) | |
1830 | return; | |
1831 | ||
1832 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
1833 | expression_completer (ignore, tracker, text, word); | |
1834 | } | |
1835 | ||
c906108c | 1836 | \f |
c5aa993b | 1837 | |
c906108c SS |
1838 | /* Add an expression to the auto-display chain. |
1839 | Specify the expression. */ | |
1840 | ||
1841 | static void | |
0b39b52e | 1842 | display_command (const char *arg, int from_tty) |
c906108c SS |
1843 | { |
1844 | struct format_data fmt; | |
fe978cb0 | 1845 | struct display *newobj; |
6f937416 | 1846 | const char *exp = arg; |
c906108c | 1847 | |
7bd0be3a | 1848 | if (exp == 0) |
c906108c | 1849 | { |
7bd0be3a AB |
1850 | do_displays (); |
1851 | return; | |
1852 | } | |
c906108c | 1853 | |
7bd0be3a AB |
1854 | if (*exp == '/') |
1855 | { | |
1856 | exp++; | |
1857 | fmt = decode_format (&exp, 0, 0); | |
1858 | if (fmt.size && fmt.format == 0) | |
1859 | fmt.format = 'x'; | |
1860 | if (fmt.format == 'i' || fmt.format == 's') | |
1861 | fmt.size = 'b'; | |
1862 | } | |
1863 | else | |
1864 | { | |
1865 | fmt.format = 0; | |
1866 | fmt.size = 0; | |
1867 | fmt.count = 0; | |
1868 | fmt.raw = 0; | |
1869 | } | |
c906108c | 1870 | |
699bd4cf TT |
1871 | innermost_block_tracker tracker; |
1872 | expression_up expr = parse_expression (exp, &tracker); | |
c906108c | 1873 | |
8be4b118 TT |
1874 | newobj = new display (exp, std::move (expr), fmt, |
1875 | current_program_space, tracker.block ()); | |
1876 | all_displays.emplace_back (newobj); | |
c906108c | 1877 | |
7bd0be3a AB |
1878 | if (from_tty) |
1879 | do_one_display (newobj); | |
c906108c | 1880 | |
7bd0be3a | 1881 | dont_repeat (); |
c906108c SS |
1882 | } |
1883 | ||
675dcf4f MK |
1884 | /* Clear out the display_chain. Done when new symtabs are loaded, |
1885 | since this invalidates the types stored in many expressions. */ | |
c906108c SS |
1886 | |
1887 | void | |
8be4b118 | 1888 | clear_displays () |
c906108c | 1889 | { |
8be4b118 | 1890 | all_displays.clear (); |
c906108c SS |
1891 | } |
1892 | ||
3c3fe74c | 1893 | /* Delete the auto-display DISPLAY. */ |
c906108c SS |
1894 | |
1895 | static void | |
3c3fe74c | 1896 | delete_display (struct display *display) |
c906108c | 1897 | { |
3c3fe74c | 1898 | gdb_assert (display != NULL); |
c906108c | 1899 | |
8be4b118 TT |
1900 | auto iter = std::find_if (all_displays.begin (), |
1901 | all_displays.end (), | |
1902 | [=] (const std::unique_ptr<struct display> &item) | |
1903 | { | |
1904 | return item.get () == display; | |
1905 | }); | |
1906 | gdb_assert (iter != all_displays.end ()); | |
1907 | all_displays.erase (iter); | |
c906108c SS |
1908 | } |
1909 | ||
c9174737 PA |
1910 | /* Call FUNCTION on each of the displays whose numbers are given in |
1911 | ARGS. DATA is passed unmodified to FUNCTION. */ | |
c906108c SS |
1912 | |
1913 | static void | |
77763700 | 1914 | map_display_numbers (const char *args, |
8be4b118 | 1915 | gdb::function_view<void (struct display *)> function) |
c906108c | 1916 | { |
c9174737 | 1917 | int num; |
c906108c | 1918 | |
c9174737 PA |
1919 | if (args == NULL) |
1920 | error_no_arg (_("one or more display numbers")); | |
c906108c | 1921 | |
bfd28288 | 1922 | number_or_range_parser parser (args); |
c9174737 | 1923 | |
bfd28288 | 1924 | while (!parser.finished ()) |
c906108c | 1925 | { |
bfd28288 | 1926 | const char *p = parser.cur_tok (); |
c906108c | 1927 | |
bfd28288 | 1928 | num = parser.get_number (); |
3c3fe74c PA |
1929 | if (num == 0) |
1930 | warning (_("bad display number at or near '%s'"), p); | |
1931 | else | |
1932 | { | |
8be4b118 TT |
1933 | auto iter = std::find_if (all_displays.begin (), |
1934 | all_displays.end (), | |
1935 | [=] (const std::unique_ptr<display> &item) | |
1936 | { | |
1937 | return item->number == num; | |
1938 | }); | |
1939 | if (iter == all_displays.end ()) | |
3c3fe74c PA |
1940 | printf_unfiltered (_("No display number %d.\n"), num); |
1941 | else | |
8be4b118 | 1942 | function (iter->get ()); |
3c3fe74c | 1943 | } |
c906108c | 1944 | } |
c9174737 PA |
1945 | } |
1946 | ||
c9174737 PA |
1947 | /* "undisplay" command. */ |
1948 | ||
1949 | static void | |
77763700 | 1950 | undisplay_command (const char *args, int from_tty) |
c9174737 | 1951 | { |
c9174737 PA |
1952 | if (args == NULL) |
1953 | { | |
1954 | if (query (_("Delete all auto-display expressions? "))) | |
1955 | clear_displays (); | |
1956 | dont_repeat (); | |
1957 | return; | |
1958 | } | |
1959 | ||
8be4b118 | 1960 | map_display_numbers (args, delete_display); |
c906108c SS |
1961 | dont_repeat (); |
1962 | } | |
1963 | ||
1964 | /* Display a single auto-display. | |
1965 | Do nothing if the display cannot be printed in the current context, | |
0df8b418 | 1966 | or if the display is disabled. */ |
c906108c SS |
1967 | |
1968 | static void | |
fba45db2 | 1969 | do_one_display (struct display *d) |
c906108c SS |
1970 | { |
1971 | int within_current_scope; | |
1972 | ||
8be4b118 | 1973 | if (!d->enabled_p) |
c906108c SS |
1974 | return; |
1975 | ||
704e9165 UW |
1976 | /* The expression carries the architecture that was used at parse time. |
1977 | This is a problem if the expression depends on architecture features | |
1978 | (e.g. register numbers), and the current architecture is now different. | |
1979 | For example, a display statement like "display/i $pc" is expected to | |
1980 | display the PC register of the current architecture, not the arch at | |
1981 | the time the display command was given. Therefore, we re-parse the | |
1982 | expression if the current architecture has changed. */ | |
1983 | if (d->exp != NULL && d->exp->gdbarch != get_current_arch ()) | |
1984 | { | |
4d01a485 | 1985 | d->exp.reset (); |
704e9165 UW |
1986 | d->block = NULL; |
1987 | } | |
1988 | ||
a3247a22 PP |
1989 | if (d->exp == NULL) |
1990 | { | |
ad3bbd48 | 1991 | |
a70b8144 | 1992 | try |
a3247a22 | 1993 | { |
699bd4cf | 1994 | innermost_block_tracker tracker; |
8be4b118 | 1995 | d->exp = parse_expression (d->exp_string.c_str (), &tracker); |
699bd4cf | 1996 | d->block = tracker.block (); |
a3247a22 | 1997 | } |
230d2906 | 1998 | catch (const gdb_exception &ex) |
a3247a22 PP |
1999 | { |
2000 | /* Can't re-parse the expression. Disable this display item. */ | |
8be4b118 | 2001 | d->enabled_p = false; |
a3247a22 | 2002 | warning (_("Unable to display \"%s\": %s"), |
8be4b118 | 2003 | d->exp_string.c_str (), ex.what ()); |
a3247a22 PP |
2004 | return; |
2005 | } | |
2006 | } | |
2007 | ||
c906108c | 2008 | if (d->block) |
6c95b8df PA |
2009 | { |
2010 | if (d->pspace == current_program_space) | |
f21c2bd7 TT |
2011 | within_current_scope = contained_in (get_selected_block (0), d->block, |
2012 | true); | |
6c95b8df PA |
2013 | else |
2014 | within_current_scope = 0; | |
2015 | } | |
c906108c SS |
2016 | else |
2017 | within_current_scope = 1; | |
2018 | if (!within_current_scope) | |
2019 | return; | |
2020 | ||
b7b633e9 TT |
2021 | scoped_restore save_display_number |
2022 | = make_scoped_restore (¤t_display_number, d->number); | |
c906108c SS |
2023 | |
2024 | annotate_display_begin (); | |
2025 | printf_filtered ("%d", d->number); | |
2026 | annotate_display_number_end (); | |
2027 | printf_filtered (": "); | |
2028 | if (d->format.size) | |
2029 | { | |
c906108c SS |
2030 | |
2031 | annotate_display_format (); | |
2032 | ||
2033 | printf_filtered ("x/"); | |
2034 | if (d->format.count != 1) | |
2035 | printf_filtered ("%d", d->format.count); | |
2036 | printf_filtered ("%c", d->format.format); | |
2037 | if (d->format.format != 'i' && d->format.format != 's') | |
2038 | printf_filtered ("%c", d->format.size); | |
2039 | printf_filtered (" "); | |
2040 | ||
2041 | annotate_display_expression (); | |
2042 | ||
8be4b118 | 2043 | puts_filtered (d->exp_string.c_str ()); |
c906108c SS |
2044 | annotate_display_expression_end (); |
2045 | ||
6a2eb474 | 2046 | if (d->format.count != 1 || d->format.format == 'i') |
c906108c SS |
2047 | printf_filtered ("\n"); |
2048 | else | |
2049 | printf_filtered (" "); | |
c5aa993b | 2050 | |
c906108c SS |
2051 | annotate_display_value (); |
2052 | ||
a70b8144 | 2053 | try |
dda83cd7 | 2054 | { |
9d8fa392 PA |
2055 | struct value *val; |
2056 | CORE_ADDR addr; | |
2057 | ||
4d01a485 | 2058 | val = evaluate_expression (d->exp.get ()); |
9d8fa392 PA |
2059 | addr = value_as_address (val); |
2060 | if (d->format.format == 'i') | |
2061 | addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr); | |
2062 | do_examine (d->format, d->exp->gdbarch, addr); | |
2063 | } | |
230d2906 | 2064 | catch (const gdb_exception_error &ex) |
492d29ea | 2065 | { |
7f6aba03 TT |
2066 | fprintf_filtered (gdb_stdout, _("%p[<error: %s>%p]\n"), |
2067 | metadata_style.style ().ptr (), ex.what (), | |
2068 | nullptr); | |
492d29ea | 2069 | } |
c906108c SS |
2070 | } |
2071 | else | |
2072 | { | |
79a45b7d TT |
2073 | struct value_print_options opts; |
2074 | ||
c906108c SS |
2075 | annotate_display_format (); |
2076 | ||
2077 | if (d->format.format) | |
2078 | printf_filtered ("/%c ", d->format.format); | |
2079 | ||
2080 | annotate_display_expression (); | |
2081 | ||
8be4b118 | 2082 | puts_filtered (d->exp_string.c_str ()); |
c906108c SS |
2083 | annotate_display_expression_end (); |
2084 | ||
2085 | printf_filtered (" = "); | |
2086 | ||
2087 | annotate_display_expression (); | |
2088 | ||
79a45b7d | 2089 | get_formatted_print_options (&opts, d->format.format); |
a6bac58e | 2090 | opts.raw = d->format.raw; |
9d8fa392 | 2091 | |
a70b8144 | 2092 | try |
dda83cd7 | 2093 | { |
9d8fa392 PA |
2094 | struct value *val; |
2095 | ||
4d01a485 | 2096 | val = evaluate_expression (d->exp.get ()); |
9d8fa392 PA |
2097 | print_formatted (val, d->format.size, &opts, gdb_stdout); |
2098 | } | |
230d2906 | 2099 | catch (const gdb_exception_error &ex) |
492d29ea | 2100 | { |
7f6aba03 TT |
2101 | fprintf_styled (gdb_stdout, metadata_style.style (), |
2102 | _("<error: %s>"), ex.what ()); | |
492d29ea | 2103 | } |
492d29ea | 2104 | |
c906108c SS |
2105 | printf_filtered ("\n"); |
2106 | } | |
2107 | ||
2108 | annotate_display_end (); | |
2109 | ||
2110 | gdb_flush (gdb_stdout); | |
c906108c SS |
2111 | } |
2112 | ||
2113 | /* Display all of the values on the auto-display chain which can be | |
2114 | evaluated in the current scope. */ | |
2115 | ||
2116 | void | |
fba45db2 | 2117 | do_displays (void) |
c906108c | 2118 | { |
8be4b118 TT |
2119 | for (auto &d : all_displays) |
2120 | do_one_display (d.get ()); | |
c906108c SS |
2121 | } |
2122 | ||
2123 | /* Delete the auto-display which we were in the process of displaying. | |
2124 | This is done when there is an error or a signal. */ | |
2125 | ||
2126 | void | |
fba45db2 | 2127 | disable_display (int num) |
c906108c | 2128 | { |
8be4b118 | 2129 | for (auto &d : all_displays) |
c906108c SS |
2130 | if (d->number == num) |
2131 | { | |
8be4b118 | 2132 | d->enabled_p = false; |
c906108c SS |
2133 | return; |
2134 | } | |
a3f17187 | 2135 | printf_unfiltered (_("No display number %d.\n"), num); |
c906108c | 2136 | } |
c5aa993b | 2137 | |
c906108c | 2138 | void |
fba45db2 | 2139 | disable_current_display (void) |
c906108c SS |
2140 | { |
2141 | if (current_display_number >= 0) | |
2142 | { | |
2143 | disable_display (current_display_number); | |
3e43a32a MS |
2144 | fprintf_unfiltered (gdb_stderr, |
2145 | _("Disabling display %d to " | |
2146 | "avoid infinite recursion.\n"), | |
c5aa993b | 2147 | current_display_number); |
c906108c SS |
2148 | } |
2149 | current_display_number = -1; | |
2150 | } | |
2151 | ||
2152 | static void | |
1d12d88f | 2153 | info_display_command (const char *ignore, int from_tty) |
c906108c | 2154 | { |
8be4b118 | 2155 | if (all_displays.empty ()) |
a3f17187 | 2156 | printf_unfiltered (_("There are no auto-display expressions now.\n")); |
c906108c | 2157 | else |
a3f17187 AC |
2158 | printf_filtered (_("Auto-display expressions now in effect:\n\ |
2159 | Num Enb Expression\n")); | |
c906108c | 2160 | |
8be4b118 | 2161 | for (auto &d : all_displays) |
c906108c | 2162 | { |
b5de0fa7 | 2163 | printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]); |
c906108c SS |
2164 | if (d->format.size) |
2165 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
c5aa993b | 2166 | d->format.format); |
c906108c SS |
2167 | else if (d->format.format) |
2168 | printf_filtered ("/%c ", d->format.format); | |
8be4b118 | 2169 | puts_filtered (d->exp_string.c_str ()); |
f21c2bd7 | 2170 | if (d->block && !contained_in (get_selected_block (0), d->block, true)) |
a3f17187 | 2171 | printf_filtered (_(" (cannot be evaluated in the current context)")); |
c906108c | 2172 | printf_filtered ("\n"); |
c906108c SS |
2173 | } |
2174 | } | |
2175 | ||
85102364 | 2176 | /* Implementation of both the "disable display" and "enable display" |
c9174737 PA |
2177 | commands. ENABLE decides what to do. */ |
2178 | ||
2179 | static void | |
8be4b118 | 2180 | enable_disable_display_command (const char *args, int from_tty, bool enable) |
c9174737 PA |
2181 | { |
2182 | if (args == NULL) | |
c906108c | 2183 | { |
8be4b118 | 2184 | for (auto &d : all_displays) |
c9174737 PA |
2185 | d->enabled_p = enable; |
2186 | return; | |
2187 | } | |
c5aa993b | 2188 | |
8be4b118 TT |
2189 | map_display_numbers (args, |
2190 | [=] (struct display *d) | |
2191 | { | |
2192 | d->enabled_p = enable; | |
2193 | }); | |
c906108c SS |
2194 | } |
2195 | ||
c9174737 PA |
2196 | /* The "enable display" command. */ |
2197 | ||
c906108c | 2198 | static void |
77763700 | 2199 | enable_display_command (const char *args, int from_tty) |
c906108c | 2200 | { |
8be4b118 | 2201 | enable_disable_display_command (args, from_tty, true); |
c9174737 | 2202 | } |
c5aa993b | 2203 | |
c9174737 | 2204 | /* The "disable display" command. */ |
c906108c | 2205 | |
c9174737 | 2206 | static void |
77763700 | 2207 | disable_display_command (const char *args, int from_tty) |
c9174737 | 2208 | { |
8be4b118 | 2209 | enable_disable_display_command (args, from_tty, false); |
c906108c | 2210 | } |
a3247a22 | 2211 | |
a3247a22 PP |
2212 | /* display_chain items point to blocks and expressions. Some expressions in |
2213 | turn may point to symbols. | |
2214 | Both symbols and blocks are obstack_alloc'd on objfile_stack, and are | |
2215 | obstack_free'd when a shared library is unloaded. | |
2216 | Clear pointers that are about to become dangling. | |
2217 | Both .exp and .block fields will be restored next time we need to display | |
2218 | an item by re-parsing .exp_string field in the new execution context. */ | |
2219 | ||
2220 | static void | |
63644780 | 2221 | clear_dangling_display_expressions (struct objfile *objfile) |
a3247a22 | 2222 | { |
63644780 | 2223 | struct program_space *pspace; |
a3247a22 | 2224 | |
c0201579 JK |
2225 | /* With no symbol file we cannot have a block or expression from it. */ |
2226 | if (objfile == NULL) | |
2227 | return; | |
63644780 | 2228 | pspace = objfile->pspace; |
c0201579 | 2229 | if (objfile->separate_debug_objfile_backlink) |
63644780 NB |
2230 | { |
2231 | objfile = objfile->separate_debug_objfile_backlink; | |
2232 | gdb_assert (objfile->pspace == pspace); | |
2233 | } | |
c0201579 | 2234 | |
8be4b118 | 2235 | for (auto &d : all_displays) |
a3247a22 | 2236 | { |
63644780 | 2237 | if (d->pspace != pspace) |
c0201579 JK |
2238 | continue; |
2239 | ||
d6bc0792 TT |
2240 | struct objfile *bl_objf = nullptr; |
2241 | if (d->block != nullptr) | |
2242 | { | |
2243 | bl_objf = block_objfile (d->block); | |
2244 | if (bl_objf->separate_debug_objfile_backlink != nullptr) | |
2245 | bl_objf = bl_objf->separate_debug_objfile_backlink; | |
2246 | } | |
2247 | ||
2248 | if (bl_objf == objfile | |
4d01a485 | 2249 | || (d->exp != NULL && exp_uses_objfile (d->exp.get (), objfile))) |
d6bc0792 TT |
2250 | { |
2251 | d->exp.reset (); | |
2252 | d->block = NULL; | |
2253 | } | |
a3247a22 PP |
2254 | } |
2255 | } | |
c906108c | 2256 | \f |
c5aa993b | 2257 | |
675dcf4f | 2258 | /* Print the value in stack frame FRAME of a variable specified by a |
aad95b57 TT |
2259 | struct symbol. NAME is the name to print; if NULL then VAR's print |
2260 | name will be used. STREAM is the ui_file on which to print the | |
2261 | value. INDENT specifies the number of indent levels to print | |
8f043999 JK |
2262 | before printing the variable name. |
2263 | ||
2264 | This function invalidates FRAME. */ | |
c906108c SS |
2265 | |
2266 | void | |
aad95b57 TT |
2267 | print_variable_and_value (const char *name, struct symbol *var, |
2268 | struct frame_info *frame, | |
2269 | struct ui_file *stream, int indent) | |
c906108c | 2270 | { |
c906108c | 2271 | |
aad95b57 | 2272 | if (!name) |
987012b8 | 2273 | name = var->print_name (); |
aad95b57 | 2274 | |
844a6538 | 2275 | fprintf_filtered (stream, "%*s%ps = ", 2 * indent, "", |
6a831f06 | 2276 | styled_string (variable_name_style.style (), name)); |
80ae2043 | 2277 | |
a70b8144 | 2278 | try |
0f6a939d PM |
2279 | { |
2280 | struct value *val; | |
2281 | struct value_print_options opts; | |
aad95b57 | 2282 | |
63e43d3a PMR |
2283 | /* READ_VAR_VALUE needs a block in order to deal with non-local |
2284 | references (i.e. to handle nested functions). In this context, we | |
2285 | print variables that are local to this frame, so we can avoid passing | |
2286 | a block to it. */ | |
2287 | val = read_var_value (var, NULL, frame); | |
0f6a939d | 2288 | get_user_print_options (&opts); |
3343315b | 2289 | opts.deref_ref = 1; |
0f6a939d | 2290 | common_val_print (val, stream, indent, &opts, current_language); |
8f043999 JK |
2291 | |
2292 | /* common_val_print invalidates FRAME when a pretty printer calls inferior | |
2293 | function. */ | |
2294 | frame = NULL; | |
0f6a939d | 2295 | } |
230d2906 | 2296 | catch (const gdb_exception_error &except) |
492d29ea | 2297 | { |
7f6aba03 TT |
2298 | fprintf_styled (stream, metadata_style.style (), |
2299 | "<error reading variable %s (%s)>", name, | |
2300 | except.what ()); | |
492d29ea | 2301 | } |
492d29ea | 2302 | |
aad95b57 | 2303 | fprintf_filtered (stream, "\n"); |
c906108c SS |
2304 | } |
2305 | ||
c2792f5a DE |
2306 | /* Subroutine of ui_printf to simplify it. |
2307 | Print VALUE to STREAM using FORMAT. | |
1f6f6e21 PW |
2308 | VALUE is a C-style string either on the target or |
2309 | in a GDB internal variable. */ | |
c2792f5a DE |
2310 | |
2311 | static void | |
2312 | printf_c_string (struct ui_file *stream, const char *format, | |
2313 | struct value *value) | |
2314 | { | |
1f6f6e21 | 2315 | const gdb_byte *str; |
c2792f5a | 2316 | |
78134374 | 2317 | if (value_type (value)->code () != TYPE_CODE_PTR |
7b973adc | 2318 | && VALUE_LVAL (value) == lval_internalvar |
1f6f6e21 | 2319 | && c_is_string_type_p (value_type (value))) |
3ae9ce5d | 2320 | { |
1f6f6e21 | 2321 | size_t len = TYPE_LENGTH (value_type (value)); |
c2792f5a | 2322 | |
1f6f6e21 PW |
2323 | /* Copy the internal var value to TEM_STR and append a terminating null |
2324 | character. This protects against corrupted C-style strings that lack | |
2325 | the terminating null char. It also allows Ada-style strings (not | |
2326 | null terminated) to be printed without problems. */ | |
2327 | gdb_byte *tem_str = (gdb_byte *) alloca (len + 1); | |
c2792f5a | 2328 | |
1f6f6e21 PW |
2329 | memcpy (tem_str, value_contents (value), len); |
2330 | tem_str [len] = 0; | |
2331 | str = tem_str; | |
c2792f5a | 2332 | } |
1f6f6e21 PW |
2333 | else |
2334 | { | |
2335 | CORE_ADDR tem = value_as_address (value);; | |
2336 | ||
2337 | if (tem == 0) | |
2338 | { | |
2339 | DIAGNOSTIC_PUSH | |
2340 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
2341 | fprintf_filtered (stream, format, "(null)"); | |
2342 | DIAGNOSTIC_POP | |
2343 | return; | |
2344 | } | |
2345 | ||
2346 | /* This is a %s argument. Find the length of the string. */ | |
2347 | size_t len; | |
2348 | ||
2349 | for (len = 0;; len++) | |
2350 | { | |
2351 | gdb_byte c; | |
c2792f5a | 2352 | |
1f6f6e21 PW |
2353 | QUIT; |
2354 | read_memory (tem + len, &c, 1); | |
2355 | if (c == 0) | |
2356 | break; | |
2357 | } | |
2358 | ||
2359 | /* Copy the string contents into a string inside GDB. */ | |
2360 | gdb_byte *tem_str = (gdb_byte *) alloca (len + 1); | |
2361 | ||
2362 | if (len != 0) | |
2363 | read_memory (tem, tem_str, len); | |
2364 | tem_str[len] = 0; | |
2365 | str = tem_str; | |
2366 | } | |
c2792f5a | 2367 | |
af39b1c2 SM |
2368 | DIAGNOSTIC_PUSH |
2369 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2370 | fprintf_filtered (stream, format, (char *) str); |
af39b1c2 | 2371 | DIAGNOSTIC_POP |
c2792f5a DE |
2372 | } |
2373 | ||
2374 | /* Subroutine of ui_printf to simplify it. | |
2375 | Print VALUE to STREAM using FORMAT. | |
1f6f6e21 PW |
2376 | VALUE is a wide C-style string on the target or |
2377 | in a GDB internal variable. */ | |
c2792f5a DE |
2378 | |
2379 | static void | |
2380 | printf_wide_c_string (struct ui_file *stream, const char *format, | |
2381 | struct value *value) | |
2382 | { | |
1f6f6e21 PW |
2383 | const gdb_byte *str; |
2384 | size_t len; | |
8ee511af | 2385 | struct gdbarch *gdbarch = value_type (value)->arch (); |
b858499d | 2386 | struct type *wctype = lookup_typename (current_language, |
c2792f5a DE |
2387 | "wchar_t", NULL, 0); |
2388 | int wcwidth = TYPE_LENGTH (wctype); | |
c2792f5a | 2389 | |
1f6f6e21 PW |
2390 | if (VALUE_LVAL (value) == lval_internalvar |
2391 | && c_is_string_type_p (value_type (value))) | |
3ae9ce5d | 2392 | { |
1f6f6e21 PW |
2393 | str = value_contents (value); |
2394 | len = TYPE_LENGTH (value_type (value)); | |
3ae9ce5d | 2395 | } |
1f6f6e21 | 2396 | else |
c2792f5a | 2397 | { |
1f6f6e21 | 2398 | CORE_ADDR tem = value_as_address (value); |
c2792f5a | 2399 | |
1f6f6e21 PW |
2400 | if (tem == 0) |
2401 | { | |
2402 | DIAGNOSTIC_PUSH | |
2403 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
2404 | fprintf_filtered (stream, format, "(null)"); | |
2405 | DIAGNOSTIC_POP | |
2406 | return; | |
2407 | } | |
2408 | ||
2409 | /* This is a %s argument. Find the length of the string. */ | |
2410 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
2411 | gdb_byte *buf = (gdb_byte *) alloca (wcwidth); | |
2412 | ||
2413 | for (len = 0;; len += wcwidth) | |
2414 | { | |
2415 | QUIT; | |
2416 | read_memory (tem + len, buf, wcwidth); | |
2417 | if (extract_unsigned_integer (buf, wcwidth, byte_order) == 0) | |
2418 | break; | |
2419 | } | |
2420 | ||
2421 | /* Copy the string contents into a string inside GDB. */ | |
2422 | gdb_byte *tem_str = (gdb_byte *) alloca (len + wcwidth); | |
2423 | ||
2424 | if (len != 0) | |
2425 | read_memory (tem, tem_str, len); | |
2426 | memset (&tem_str[len], 0, wcwidth); | |
2427 | str = tem_str; | |
2428 | } | |
c2792f5a | 2429 | |
8268c778 | 2430 | auto_obstack output; |
c2792f5a DE |
2431 | |
2432 | convert_between_encodings (target_wide_charset (gdbarch), | |
2433 | host_charset (), | |
1f6f6e21 | 2434 | str, len, wcwidth, |
c2792f5a DE |
2435 | &output, translit_char); |
2436 | obstack_grow_str0 (&output, ""); | |
2437 | ||
af39b1c2 SM |
2438 | DIAGNOSTIC_PUSH |
2439 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2440 | fprintf_filtered (stream, format, obstack_base (&output)); |
af39b1c2 | 2441 | DIAGNOSTIC_POP |
c2792f5a DE |
2442 | } |
2443 | ||
2444 | /* Subroutine of ui_printf to simplify it. | |
16e812b2 | 2445 | Print VALUE, a floating point value, to STREAM using FORMAT. */ |
c2792f5a DE |
2446 | |
2447 | static void | |
16e812b2 UW |
2448 | printf_floating (struct ui_file *stream, const char *format, |
2449 | struct value *value, enum argclass argclass) | |
c2792f5a | 2450 | { |
c2792f5a DE |
2451 | /* Parameter data. */ |
2452 | struct type *param_type = value_type (value); | |
8ee511af | 2453 | struct gdbarch *gdbarch = param_type->arch (); |
c2792f5a | 2454 | |
16e812b2 UW |
2455 | /* Determine target type corresponding to the format string. */ |
2456 | struct type *fmt_type; | |
2457 | switch (argclass) | |
c2792f5a | 2458 | { |
16e812b2 UW |
2459 | case double_arg: |
2460 | fmt_type = builtin_type (gdbarch)->builtin_double; | |
2461 | break; | |
2462 | case long_double_arg: | |
2463 | fmt_type = builtin_type (gdbarch)->builtin_long_double; | |
2464 | break; | |
2465 | case dec32float_arg: | |
2466 | fmt_type = builtin_type (gdbarch)->builtin_decfloat; | |
2467 | break; | |
2468 | case dec64float_arg: | |
2469 | fmt_type = builtin_type (gdbarch)->builtin_decdouble; | |
2470 | break; | |
2471 | case dec128float_arg: | |
2472 | fmt_type = builtin_type (gdbarch)->builtin_declong; | |
2473 | break; | |
2474 | default: | |
2475 | gdb_assert_not_reached ("unexpected argument class"); | |
c2792f5a DE |
2476 | } |
2477 | ||
16e812b2 UW |
2478 | /* To match the traditional GDB behavior, the conversion is |
2479 | done differently depending on the type of the parameter: | |
2480 | ||
2481 | - if the parameter has floating-point type, it's value | |
2482 | is converted to the target type; | |
2483 | ||
2484 | - otherwise, if the parameter has a type that is of the | |
2485 | same size as a built-in floating-point type, the value | |
2486 | bytes are interpreted as if they were of that type, and | |
2487 | then converted to the target type (this is not done for | |
2488 | decimal floating-point argument classes); | |
2489 | ||
2490 | - otherwise, if the source value has an integer value, | |
2491 | it's value is converted to the target type; | |
c2792f5a | 2492 | |
16e812b2 | 2493 | - otherwise, an error is raised. |
c2792f5a | 2494 | |
16e812b2 UW |
2495 | In either case, the result of the conversion is a byte buffer |
2496 | formatted in the target format for the target type. */ | |
2497 | ||
78134374 | 2498 | if (fmt_type->code () == TYPE_CODE_FLT) |
16e812b2 UW |
2499 | { |
2500 | param_type = float_type_from_length (param_type); | |
2501 | if (param_type != value_type (value)) | |
2502 | value = value_from_contents (param_type, value_contents (value)); | |
2503 | } | |
2504 | ||
2505 | value = value_cast (fmt_type, value); | |
c2792f5a | 2506 | |
3b4b2f16 | 2507 | /* Convert the value to a string and print it. */ |
f69fdf9b UW |
2508 | std::string str |
2509 | = target_float_to_string (value_contents (value), fmt_type, format); | |
3b4b2f16 | 2510 | fputs_filtered (str.c_str (), stream); |
c2792f5a DE |
2511 | } |
2512 | ||
2513 | /* Subroutine of ui_printf to simplify it. | |
2514 | Print VALUE, a target pointer, to STREAM using FORMAT. */ | |
2515 | ||
2516 | static void | |
2517 | printf_pointer (struct ui_file *stream, const char *format, | |
2518 | struct value *value) | |
2519 | { | |
2520 | /* We avoid the host's %p because pointers are too | |
2521 | likely to be the wrong size. The only interesting | |
2522 | modifier for %p is a width; extract that, and then | |
2523 | handle %p as glibc would: %#x or a literal "(nil)". */ | |
2524 | ||
2525 | const char *p; | |
2526 | char *fmt, *fmt_p; | |
2527 | #ifdef PRINTF_HAS_LONG_LONG | |
2528 | long long val = value_as_long (value); | |
2529 | #else | |
2530 | long val = value_as_long (value); | |
2531 | #endif | |
2532 | ||
224c3ddb | 2533 | fmt = (char *) alloca (strlen (format) + 5); |
c2792f5a DE |
2534 | |
2535 | /* Copy up to the leading %. */ | |
2536 | p = format; | |
2537 | fmt_p = fmt; | |
2538 | while (*p) | |
2539 | { | |
2540 | int is_percent = (*p == '%'); | |
2541 | ||
2542 | *fmt_p++ = *p++; | |
2543 | if (is_percent) | |
2544 | { | |
2545 | if (*p == '%') | |
2546 | *fmt_p++ = *p++; | |
2547 | else | |
2548 | break; | |
2549 | } | |
2550 | } | |
2551 | ||
2552 | if (val != 0) | |
2553 | *fmt_p++ = '#'; | |
2554 | ||
b8c2339b TT |
2555 | /* Copy any width or flags. Only the "-" flag is valid for pointers |
2556 | -- see the format_pieces constructor. */ | |
2557 | while (*p == '-' || (*p >= '0' && *p < '9')) | |
c2792f5a DE |
2558 | *fmt_p++ = *p++; |
2559 | ||
2560 | gdb_assert (*p == 'p' && *(p + 1) == '\0'); | |
2561 | if (val != 0) | |
2562 | { | |
2563 | #ifdef PRINTF_HAS_LONG_LONG | |
2564 | *fmt_p++ = 'l'; | |
2565 | #endif | |
2566 | *fmt_p++ = 'l'; | |
2567 | *fmt_p++ = 'x'; | |
2568 | *fmt_p++ = '\0'; | |
af39b1c2 SM |
2569 | DIAGNOSTIC_PUSH |
2570 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2571 | fprintf_filtered (stream, fmt, val); |
af39b1c2 | 2572 | DIAGNOSTIC_POP |
c2792f5a DE |
2573 | } |
2574 | else | |
2575 | { | |
2576 | *fmt_p++ = 's'; | |
2577 | *fmt_p++ = '\0'; | |
af39b1c2 SM |
2578 | DIAGNOSTIC_PUSH |
2579 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2580 | fprintf_filtered (stream, fmt, "(nil)"); |
af39b1c2 | 2581 | DIAGNOSTIC_POP |
c2792f5a DE |
2582 | } |
2583 | } | |
2584 | ||
a04b0428 JB |
2585 | /* printf "printf format string" ARG to STREAM. */ |
2586 | ||
2587 | static void | |
bbc13ae3 | 2588 | ui_printf (const char *arg, struct ui_file *stream) |
c906108c | 2589 | { |
bbc13ae3 | 2590 | const char *s = arg; |
8e481c3b | 2591 | std::vector<struct value *> val_args; |
c906108c SS |
2592 | |
2593 | if (s == 0) | |
e2e0b3e5 | 2594 | error_no_arg (_("format-control string and values to print")); |
c906108c | 2595 | |
f1735a53 | 2596 | s = skip_spaces (s); |
c906108c | 2597 | |
675dcf4f | 2598 | /* A format string should follow, enveloped in double quotes. */ |
c906108c | 2599 | if (*s++ != '"') |
8a3fe4f8 | 2600 | error (_("Bad format string, missing '\"'.")); |
c906108c | 2601 | |
8e481c3b | 2602 | format_pieces fpieces (&s); |
c906108c | 2603 | |
d3ce09f5 SS |
2604 | if (*s++ != '"') |
2605 | error (_("Bad format string, non-terminated '\"'.")); | |
2606 | ||
f1735a53 | 2607 | s = skip_spaces (s); |
c906108c SS |
2608 | |
2609 | if (*s != ',' && *s != 0) | |
8a3fe4f8 | 2610 | error (_("Invalid argument syntax")); |
c906108c | 2611 | |
c5aa993b JM |
2612 | if (*s == ',') |
2613 | s++; | |
f1735a53 | 2614 | s = skip_spaces (s); |
c906108c | 2615 | |
c906108c | 2616 | { |
c906108c | 2617 | int nargs_wanted; |
8e481c3b TT |
2618 | int i; |
2619 | const char *current_substring; | |
c906108c | 2620 | |
c906108c | 2621 | nargs_wanted = 0; |
8e481c3b TT |
2622 | for (auto &&piece : fpieces) |
2623 | if (piece.argclass != literal_piece) | |
d3ce09f5 | 2624 | ++nargs_wanted; |
c906108c SS |
2625 | |
2626 | /* Now, parse all arguments and evaluate them. | |
2627 | Store the VALUEs in VAL_ARGS. */ | |
2628 | ||
2629 | while (*s != '\0') | |
2630 | { | |
bbc13ae3 | 2631 | const char *s1; |
ad3bbd48 | 2632 | |
a04b0428 | 2633 | s1 = s; |
8e481c3b | 2634 | val_args.push_back (parse_to_comma_and_eval (&s1)); |
c5aa993b | 2635 | |
c906108c SS |
2636 | s = s1; |
2637 | if (*s == ',') | |
2638 | s++; | |
2639 | } | |
c5aa993b | 2640 | |
8e481c3b | 2641 | if (val_args.size () != nargs_wanted) |
8a3fe4f8 | 2642 | error (_("Wrong number of arguments for specified format-string")); |
c906108c SS |
2643 | |
2644 | /* Now actually print them. */ | |
d3ce09f5 | 2645 | i = 0; |
8e481c3b | 2646 | for (auto &&piece : fpieces) |
c906108c | 2647 | { |
8e481c3b TT |
2648 | current_substring = piece.string; |
2649 | switch (piece.argclass) | |
c906108c SS |
2650 | { |
2651 | case string_arg: | |
c2792f5a | 2652 | printf_c_string (stream, current_substring, val_args[i]); |
c906108c | 2653 | break; |
6c7a06a3 | 2654 | case wide_string_arg: |
c2792f5a | 2655 | printf_wide_c_string (stream, current_substring, val_args[i]); |
6c7a06a3 TT |
2656 | break; |
2657 | case wide_char_arg: | |
2658 | { | |
8ee511af | 2659 | struct gdbarch *gdbarch = value_type (val_args[i])->arch (); |
b858499d | 2660 | struct type *wctype = lookup_typename (current_language, |
e6c014f2 | 2661 | "wchar_t", NULL, 0); |
6c7a06a3 | 2662 | struct type *valtype; |
6c7a06a3 TT |
2663 | const gdb_byte *bytes; |
2664 | ||
2665 | valtype = value_type (val_args[i]); | |
2666 | if (TYPE_LENGTH (valtype) != TYPE_LENGTH (wctype) | |
78134374 | 2667 | || valtype->code () != TYPE_CODE_INT) |
6c7a06a3 TT |
2668 | error (_("expected wchar_t argument for %%lc")); |
2669 | ||
2670 | bytes = value_contents (val_args[i]); | |
2671 | ||
8268c778 | 2672 | auto_obstack output; |
6c7a06a3 | 2673 | |
f870a310 | 2674 | convert_between_encodings (target_wide_charset (gdbarch), |
6c7a06a3 TT |
2675 | host_charset (), |
2676 | bytes, TYPE_LENGTH (valtype), | |
2677 | TYPE_LENGTH (valtype), | |
2678 | &output, translit_char); | |
2679 | obstack_grow_str0 (&output, ""); | |
2680 | ||
af39b1c2 SM |
2681 | DIAGNOSTIC_PUSH |
2682 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2683 | fprintf_filtered (stream, current_substring, |
dda83cd7 | 2684 | obstack_base (&output)); |
af39b1c2 | 2685 | DIAGNOSTIC_POP |
6c7a06a3 TT |
2686 | } |
2687 | break; | |
c906108c | 2688 | case long_long_arg: |
74a0d9f6 | 2689 | #ifdef PRINTF_HAS_LONG_LONG |
c906108c SS |
2690 | { |
2691 | long long val = value_as_long (val_args[i]); | |
ad3bbd48 | 2692 | |
af39b1c2 SM |
2693 | DIAGNOSTIC_PUSH |
2694 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
dda83cd7 | 2695 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2696 | DIAGNOSTIC_POP |
c906108c SS |
2697 | break; |
2698 | } | |
2699 | #else | |
8a3fe4f8 | 2700 | error (_("long long not supported in printf")); |
c906108c SS |
2701 | #endif |
2702 | case int_arg: | |
2703 | { | |
46e9880c | 2704 | int val = value_as_long (val_args[i]); |
ad3bbd48 | 2705 | |
af39b1c2 SM |
2706 | DIAGNOSTIC_PUSH |
2707 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
dda83cd7 | 2708 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2709 | DIAGNOSTIC_POP |
46e9880c DJ |
2710 | break; |
2711 | } | |
2712 | case long_arg: | |
2713 | { | |
c906108c | 2714 | long val = value_as_long (val_args[i]); |
ad3bbd48 | 2715 | |
e06f3d6e AB |
2716 | DIAGNOSTIC_PUSH |
2717 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
dda83cd7 | 2718 | fprintf_filtered (stream, current_substring, val); |
e06f3d6e AB |
2719 | DIAGNOSTIC_POP |
2720 | break; | |
2721 | } | |
2722 | case size_t_arg: | |
2723 | { | |
2724 | size_t val = value_as_long (val_args[i]); | |
2725 | ||
af39b1c2 SM |
2726 | DIAGNOSTIC_PUSH |
2727 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
dda83cd7 | 2728 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2729 | DIAGNOSTIC_POP |
c906108c SS |
2730 | break; |
2731 | } | |
16e812b2 UW |
2732 | /* Handles floating-point values. */ |
2733 | case double_arg: | |
2734 | case long_double_arg: | |
2735 | case dec32float_arg: | |
2736 | case dec64float_arg: | |
2737 | case dec128float_arg: | |
2738 | printf_floating (stream, current_substring, val_args[i], | |
8e481c3b | 2739 | piece.argclass); |
c2792f5a | 2740 | break; |
2025a643 | 2741 | case ptr_arg: |
c2792f5a DE |
2742 | printf_pointer (stream, current_substring, val_args[i]); |
2743 | break; | |
d3ce09f5 SS |
2744 | case literal_piece: |
2745 | /* Print a portion of the format string that has no | |
2746 | directives. Note that this will not include any | |
2747 | ordinary %-specs, but it might include "%%". That is | |
2748 | why we use printf_filtered and not puts_filtered here. | |
2749 | Also, we pass a dummy argument because some platforms | |
2750 | have modified GCC to include -Wformat-security by | |
2751 | default, which will warn here if there is no | |
2752 | argument. */ | |
af39b1c2 SM |
2753 | DIAGNOSTIC_PUSH |
2754 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
d3ce09f5 | 2755 | fprintf_filtered (stream, current_substring, 0); |
af39b1c2 | 2756 | DIAGNOSTIC_POP |
d3ce09f5 | 2757 | break; |
675dcf4f MK |
2758 | default: |
2759 | internal_error (__FILE__, __LINE__, | |
2025a643 | 2760 | _("failed internal consistency check")); |
c906108c | 2761 | } |
d3ce09f5 | 2762 | /* Maybe advance to the next argument. */ |
8e481c3b | 2763 | if (piece.argclass != literal_piece) |
d3ce09f5 | 2764 | ++i; |
c906108c | 2765 | } |
c906108c | 2766 | } |
c906108c | 2767 | } |
c906108c | 2768 | |
f1421989 HZ |
2769 | /* Implement the "printf" command. */ |
2770 | ||
a04b0428 | 2771 | static void |
0b39b52e | 2772 | printf_command (const char *arg, int from_tty) |
f1421989 | 2773 | { |
a04b0428 | 2774 | ui_printf (arg, gdb_stdout); |
ef1dfa36 TT |
2775 | reset_terminal_style (gdb_stdout); |
2776 | wrap_here (""); | |
da5bd37e | 2777 | gdb_stdout->flush (); |
f1421989 HZ |
2778 | } |
2779 | ||
2780 | /* Implement the "eval" command. */ | |
2781 | ||
2782 | static void | |
0b39b52e | 2783 | eval_command (const char *arg, int from_tty) |
f1421989 | 2784 | { |
d7e74731 | 2785 | string_file stb; |
f1421989 | 2786 | |
d7e74731 | 2787 | ui_printf (arg, &stb); |
f1421989 | 2788 | |
d7e74731 | 2789 | std::string expanded = insert_user_defined_cmd_args (stb.c_str ()); |
01770bbd | 2790 | |
95a6b0a1 | 2791 | execute_command (expanded.c_str (), from_tty); |
f1421989 HZ |
2792 | } |
2793 | ||
48136e00 LM |
2794 | /* Convenience function for error checking in memory-tag commands. */ |
2795 | ||
2796 | static void | |
2797 | show_addr_not_tagged (CORE_ADDR address) | |
2798 | { | |
2799 | error (_("Address %s not in a region mapped with a memory tagging flag."), | |
2800 | paddress (target_gdbarch (), address)); | |
2801 | } | |
2802 | ||
2803 | /* Convenience function for error checking in memory-tag commands. */ | |
2804 | ||
2805 | static void | |
2806 | show_memory_tagging_unsupported (void) | |
2807 | { | |
2808 | error (_("Memory tagging not supported or disabled by the current" | |
2809 | " architecture.")); | |
2810 | } | |
2811 | ||
2812 | /* Implement the "memory-tag" prefix command. */ | |
2813 | ||
2814 | static void | |
2815 | memory_tag_command (const char *arg, int from_tty) | |
2816 | { | |
2817 | help_list (memory_tag_list, "memory-tag ", all_commands, gdb_stdout); | |
2818 | } | |
2819 | ||
2820 | /* Helper for print-logical-tag and print-allocation-tag. */ | |
2821 | ||
2822 | static void | |
2823 | memory_tag_print_tag_command (const char *args, enum memtag_type tag_type) | |
2824 | { | |
2825 | if (args == nullptr) | |
2826 | error_no_arg (_("address or pointer")); | |
2827 | ||
2828 | /* Parse args into a value. If the value is a pointer or an address, | |
2829 | then fetch the logical or allocation tag. */ | |
2830 | value_print_options print_opts; | |
2831 | ||
2832 | struct value *val = process_print_command_args (args, &print_opts, true); | |
2833 | ||
2834 | /* If the address is not in a region memory mapped with a memory tagging | |
2835 | flag, it is no use trying to access/manipulate its allocation tag. | |
2836 | ||
2837 | It is OK to manipulate the logical tag though. */ | |
2838 | if (tag_type == memtag_type::allocation | |
2839 | && !gdbarch_tagged_address_p (target_gdbarch (), val)) | |
2840 | show_addr_not_tagged (value_as_address (val)); | |
2841 | ||
2842 | struct value *tag_value | |
2843 | = gdbarch_get_memtag (target_gdbarch (), val, tag_type); | |
2844 | std::string tag = gdbarch_memtag_to_string (target_gdbarch (), tag_value); | |
2845 | ||
2846 | if (tag.empty ()) | |
2847 | printf_filtered (_("%s tag unavailable.\n"), | |
2848 | tag_type | |
2849 | == memtag_type::logical? "Logical" : "Allocation"); | |
2850 | ||
2851 | struct value *v_tag = process_print_command_args (tag.c_str (), | |
2852 | &print_opts, | |
2853 | true); | |
2854 | print_opts.output_format = 'x'; | |
2855 | print_value (v_tag, print_opts); | |
2856 | } | |
2857 | ||
2858 | /* Implement the "memory-tag print-logical-tag" command. */ | |
2859 | ||
2860 | static void | |
2861 | memory_tag_print_logical_tag_command (const char *args, int from_tty) | |
2862 | { | |
2863 | if (!target_supports_memory_tagging ()) | |
2864 | show_memory_tagging_unsupported (); | |
2865 | ||
2866 | memory_tag_print_tag_command (args, memtag_type::logical); | |
2867 | } | |
2868 | ||
2869 | /* Implement the "memory-tag print-allocation-tag" command. */ | |
2870 | ||
2871 | static void | |
2872 | memory_tag_print_allocation_tag_command (const char *args, int from_tty) | |
2873 | { | |
2874 | if (!target_supports_memory_tagging ()) | |
2875 | show_memory_tagging_unsupported (); | |
2876 | ||
2877 | memory_tag_print_tag_command (args, memtag_type::allocation); | |
2878 | } | |
2879 | ||
2880 | /* Parse ARGS and extract ADDR and TAG. | |
2881 | ARGS should have format <expression> <tag bytes>. */ | |
2882 | ||
2883 | static void | |
2884 | parse_with_logical_tag_input (const char *args, struct value **val, | |
2885 | gdb::byte_vector &tags, | |
2886 | value_print_options *print_opts) | |
2887 | { | |
2888 | /* Fetch the address. */ | |
2889 | std::string address_string = extract_string_maybe_quoted (&args); | |
2890 | ||
2891 | /* Parse the address into a value. */ | |
2892 | *val = process_print_command_args (address_string.c_str (), print_opts, | |
2893 | true); | |
2894 | ||
2895 | /* Fetch the tag bytes. */ | |
2896 | std::string tag_string = extract_string_maybe_quoted (&args); | |
2897 | ||
2898 | /* Validate the input. */ | |
2899 | if (address_string.empty () || tag_string.empty ()) | |
2900 | error (_("Missing arguments.")); | |
2901 | ||
2902 | if (tag_string.length () != 2) | |
2903 | error (_("Error parsing tags argument. The tag should be 2 digits.")); | |
2904 | ||
2905 | tags = hex2bin (tag_string.c_str ()); | |
2906 | } | |
2907 | ||
2908 | /* Implement the "memory-tag with-logical-tag" command. */ | |
2909 | ||
2910 | static void | |
2911 | memory_tag_with_logical_tag_command (const char *args, int from_tty) | |
2912 | { | |
2913 | if (!target_supports_memory_tagging ()) | |
2914 | show_memory_tagging_unsupported (); | |
2915 | ||
2916 | if (args == nullptr) | |
2917 | error_no_arg (_("<address> <tag>")); | |
2918 | ||
2919 | gdb::byte_vector tags; | |
2920 | struct value *val; | |
2921 | value_print_options print_opts; | |
2922 | ||
2923 | /* Parse the input. */ | |
2924 | parse_with_logical_tag_input (args, &val, tags, &print_opts); | |
2925 | ||
2926 | /* Setting the logical tag is just a local operation that does not touch | |
2927 | any memory from the target. Given an input value, we modify the value | |
2928 | to include the appropriate tag. | |
2929 | ||
2930 | For this reason we need to cast the argument value to a | |
2931 | (void *) pointer. This is so we have the right type for the gdbarch | |
2932 | hook to manipulate the value and insert the tag. | |
2933 | ||
2934 | Otherwise, this would fail if, for example, GDB parsed the argument value | |
2935 | into an int-sized value and the pointer value has a type of greater | |
2936 | length. */ | |
2937 | ||
2938 | /* Cast to (void *). */ | |
2939 | val = value_cast (builtin_type (target_gdbarch ())->builtin_data_ptr, | |
2940 | val); | |
2941 | ||
2942 | /* Length doesn't matter for a logical tag. Pass 0. */ | |
2943 | if (!gdbarch_set_memtags (target_gdbarch (), val, 0, tags, | |
2944 | memtag_type::logical)) | |
2945 | printf_filtered (_("Could not update the logical tag data.\n")); | |
2946 | else | |
2947 | { | |
2948 | /* Always print it in hex format. */ | |
2949 | print_opts.output_format = 'x'; | |
2950 | print_value (val, print_opts); | |
2951 | } | |
2952 | } | |
2953 | ||
2954 | /* Parse ARGS and extract ADDR, LENGTH and TAGS. */ | |
2955 | ||
2956 | static void | |
2957 | parse_set_allocation_tag_input (const char *args, struct value **val, | |
2958 | size_t *length, gdb::byte_vector &tags) | |
2959 | { | |
2960 | /* Fetch the address. */ | |
2961 | std::string address_string = extract_string_maybe_quoted (&args); | |
2962 | ||
2963 | /* Parse the address into a value. */ | |
2964 | value_print_options print_opts; | |
2965 | *val = process_print_command_args (address_string.c_str (), &print_opts, | |
2966 | true); | |
2967 | ||
2968 | /* Fetch the length. */ | |
2969 | std::string length_string = extract_string_maybe_quoted (&args); | |
2970 | ||
2971 | /* Fetch the tag bytes. */ | |
2972 | std::string tags_string = extract_string_maybe_quoted (&args); | |
2973 | ||
2974 | /* Validate the input. */ | |
2975 | if (address_string.empty () || length_string.empty () || tags_string.empty ()) | |
2976 | error (_("Missing arguments.")); | |
2977 | ||
2978 | errno = 0; | |
2979 | const char *trailer = nullptr; | |
2980 | LONGEST parsed_length = strtoulst (length_string.c_str (), &trailer, 10); | |
2981 | ||
2982 | if (errno != 0 || (trailer != nullptr && trailer[0] != '\0')) | |
2983 | error (_("Error parsing length argument.")); | |
2984 | ||
2985 | if (parsed_length <= 0) | |
2986 | error (_("Invalid zero or negative length.")); | |
2987 | ||
2988 | *length = parsed_length; | |
2989 | ||
2990 | if (tags_string.length () % 2) | |
2991 | error (_("Error parsing tags argument. Tags should be 2 digits per byte.")); | |
2992 | ||
2993 | tags = hex2bin (tags_string.c_str ()); | |
2994 | ||
2995 | /* If the address is not in a region memory mapped with a memory tagging | |
2996 | flag, it is no use trying to access/manipulate its allocation tag. */ | |
2997 | if (!gdbarch_tagged_address_p (target_gdbarch (), *val)) | |
2998 | show_addr_not_tagged (value_as_address (*val)); | |
2999 | } | |
3000 | ||
3001 | /* Implement the "memory-tag set-allocation-tag" command. | |
3002 | ARGS should be in the format <address> <length> <tags>. */ | |
3003 | ||
3004 | static void | |
3005 | memory_tag_set_allocation_tag_command (const char *args, int from_tty) | |
3006 | { | |
3007 | if (!target_supports_memory_tagging ()) | |
3008 | show_memory_tagging_unsupported (); | |
3009 | ||
3010 | if (args == nullptr) | |
3011 | error_no_arg (_("<starting address> <length> <tag bytes>")); | |
3012 | ||
3013 | gdb::byte_vector tags; | |
3014 | size_t length = 0; | |
3015 | struct value *val; | |
3016 | ||
3017 | /* Parse the input. */ | |
3018 | parse_set_allocation_tag_input (args, &val, &length, tags); | |
3019 | ||
3020 | if (!gdbarch_set_memtags (target_gdbarch (), val, length, tags, | |
3021 | memtag_type::allocation)) | |
3022 | printf_filtered (_("Could not update the allocation tag(s).\n")); | |
3023 | else | |
3024 | printf_filtered (_("Allocation tag(s) updated successfully.\n")); | |
3025 | } | |
3026 | ||
3027 | /* Implement the "memory-tag check" command. */ | |
3028 | ||
3029 | static void | |
3030 | memory_tag_check_command (const char *args, int from_tty) | |
3031 | { | |
3032 | if (!target_supports_memory_tagging ()) | |
3033 | show_memory_tagging_unsupported (); | |
3034 | ||
3035 | if (args == nullptr) | |
3036 | error (_("Argument required (address or pointer)")); | |
3037 | ||
3038 | /* Parse the expression into a value. If the value is an address or | |
3039 | pointer, then check its logical tag against the allocation tag. */ | |
3040 | value_print_options print_opts; | |
3041 | ||
3042 | struct value *val = process_print_command_args (args, &print_opts, true); | |
3043 | ||
3044 | /* If the address is not in a region memory mapped with a memory tagging | |
3045 | flag, it is no use trying to access/manipulate its allocation tag. */ | |
3046 | if (!gdbarch_tagged_address_p (target_gdbarch (), val)) | |
3047 | show_addr_not_tagged (value_as_address (val)); | |
3048 | ||
3049 | CORE_ADDR addr = value_as_address (val); | |
3050 | ||
3051 | /* Check if the tag is valid. */ | |
3052 | if (!gdbarch_memtag_matches_p (target_gdbarch (), val)) | |
3053 | { | |
3054 | struct value *tag | |
3055 | = gdbarch_get_memtag (target_gdbarch (), val, memtag_type::logical); | |
3056 | std::string ltag | |
3057 | = gdbarch_memtag_to_string (target_gdbarch (), tag); | |
3058 | ||
3059 | tag = gdbarch_get_memtag (target_gdbarch (), val, | |
3060 | memtag_type::allocation); | |
3061 | std::string atag | |
3062 | = gdbarch_memtag_to_string (target_gdbarch (), tag); | |
3063 | ||
3064 | printf_filtered (_("Logical tag (%s) does not match" | |
3065 | " the allocation tag (%s) for address %s.\n"), | |
3066 | ltag.c_str (), atag.c_str (), | |
3067 | paddress (target_gdbarch (), addr)); | |
3068 | } | |
3069 | else | |
3070 | { | |
3071 | struct value *tag | |
3072 | = gdbarch_get_memtag (target_gdbarch (), val, memtag_type::logical); | |
3073 | std::string ltag | |
3074 | = gdbarch_memtag_to_string (target_gdbarch (), tag); | |
3075 | ||
3076 | printf_filtered (_("Memory tags for address %s match (%s).\n"), | |
3077 | paddress (target_gdbarch (), addr), ltag.c_str ()); | |
3078 | } | |
3079 | } | |
3080 | ||
6c265988 | 3081 | void _initialize_printcmd (); |
c906108c | 3082 | void |
6c265988 | 3083 | _initialize_printcmd () |
c906108c | 3084 | { |
c94fdfd0 EZ |
3085 | struct cmd_list_element *c; |
3086 | ||
c906108c SS |
3087 | current_display_number = -1; |
3088 | ||
76727919 | 3089 | gdb::observers::free_objfile.attach (clear_dangling_display_expressions); |
a3247a22 | 3090 | |
11db9430 | 3091 | add_info ("address", info_address_command, |
188e1fa9 TT |
3092 | _("Describe where symbol SYM is stored.\n\ |
3093 | Usage: info address SYM")); | |
c906108c | 3094 | |
11db9430 | 3095 | add_info ("symbol", info_symbol_command, _("\ |
1bedd215 | 3096 | Describe what symbol is at location ADDR.\n\ |
188e1fa9 | 3097 | Usage: info symbol ADDR\n\ |
1bedd215 | 3098 | Only for symbols with fixed locations (global or static scope).")); |
c906108c | 3099 | |
037d7135 | 3100 | c = add_com ("x", class_vars, x_command, _("\ |
1bedd215 | 3101 | Examine memory: x/FMT ADDRESS.\n\ |
c906108c SS |
3102 | ADDRESS is an expression for the memory address to examine.\n\ |
3103 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
3104 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
6fbe845e AB |
3105 | t(binary), f(float), a(address), i(instruction), c(char), s(string)\n\ |
3106 | and z(hex, zero padded on the left).\n\ | |
1bedd215 | 3107 | Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ |
c906108c | 3108 | The specified number of objects of the specified size are printed\n\ |
bb556f1f TK |
3109 | according to the format. If a negative number is specified, memory is\n\ |
3110 | examined backward from the address.\n\n\ | |
c906108c SS |
3111 | Defaults for format and size letters are those previously used.\n\ |
3112 | Default count is 1. Default address is following last thing printed\n\ | |
1bedd215 | 3113 | with this command or \"print\".")); |
037d7135 | 3114 | set_cmd_completer_handle_brkchars (c, display_and_x_command_completer); |
c906108c | 3115 | |
11db9430 | 3116 | add_info ("display", info_display_command, _("\ |
188e1fa9 TT |
3117 | Expressions to display when program stops, with code numbers.\n\ |
3118 | Usage: info display")); | |
c906108c | 3119 | |
1a966eab AC |
3120 | add_cmd ("undisplay", class_vars, undisplay_command, _("\ |
3121 | Cancel some expressions to be displayed when program stops.\n\ | |
188e1fa9 | 3122 | Usage: undisplay [NUM]...\n\ |
c906108c SS |
3123 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
3124 | No argument means cancel all automatic-display expressions.\n\ | |
3125 | \"delete display\" has the same effect as this command.\n\ | |
1a966eab | 3126 | Do \"info display\" to see current list of code numbers."), |
c5aa993b | 3127 | &cmdlist); |
c906108c | 3128 | |
037d7135 | 3129 | c = add_com ("display", class_vars, display_command, _("\ |
1bedd215 | 3130 | Print value of expression EXP each time the program stops.\n\ |
188e1fa9 | 3131 | Usage: display[/FMT] EXP\n\ |
c906108c SS |
3132 | /FMT may be used before EXP as in the \"print\" command.\n\ |
3133 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
3134 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
3135 | and examining is done as in the \"x\" command.\n\n\ | |
3136 | With no argument, display all currently requested auto-display expressions.\n\ | |
1bedd215 | 3137 | Use \"undisplay\" to cancel display requests previously made.")); |
037d7135 | 3138 | set_cmd_completer_handle_brkchars (c, display_and_x_command_completer); |
c906108c | 3139 | |
c9174737 | 3140 | add_cmd ("display", class_vars, enable_display_command, _("\ |
1a966eab | 3141 | Enable some expressions to be displayed when program stops.\n\ |
188e1fa9 | 3142 | Usage: enable display [NUM]...\n\ |
c906108c SS |
3143 | Arguments are the code numbers of the expressions to resume displaying.\n\ |
3144 | No argument means enable all automatic-display expressions.\n\ | |
1a966eab | 3145 | Do \"info display\" to see current list of code numbers."), &enablelist); |
c906108c | 3146 | |
1a966eab AC |
3147 | add_cmd ("display", class_vars, disable_display_command, _("\ |
3148 | Disable some expressions to be displayed when program stops.\n\ | |
188e1fa9 | 3149 | Usage: disable display [NUM]...\n\ |
c906108c SS |
3150 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
3151 | No argument means disable all automatic-display expressions.\n\ | |
1a966eab | 3152 | Do \"info display\" to see current list of code numbers."), &disablelist); |
c906108c | 3153 | |
1a966eab AC |
3154 | add_cmd ("display", class_vars, undisplay_command, _("\ |
3155 | Cancel some expressions to be displayed when program stops.\n\ | |
188e1fa9 | 3156 | Usage: delete display [NUM]...\n\ |
c906108c SS |
3157 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
3158 | No argument means cancel all automatic-display expressions.\n\ | |
1a966eab | 3159 | Do \"info display\" to see current list of code numbers."), &deletelist); |
c906108c | 3160 | |
1bedd215 | 3161 | add_com ("printf", class_vars, printf_command, _("\ |
80ae639d | 3162 | Formatted printing, like the C \"printf\" function.\n\ |
188e1fa9 | 3163 | Usage: printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ |
80ae639d | 3164 | This supports most C printf format specifications, like %s, %d, etc.")); |
c906108c | 3165 | |
1bedd215 AC |
3166 | add_com ("output", class_vars, output_command, _("\ |
3167 | Like \"print\" but don't put in value history and don't print newline.\n\ | |
188e1fa9 | 3168 | Usage: output EXP\n\ |
1bedd215 | 3169 | This is useful in user-defined commands.")); |
c906108c | 3170 | |
1bedd215 | 3171 | add_prefix_cmd ("set", class_vars, set_command, _("\ |
590042fc | 3172 | Evaluate expression EXP and assign result to variable VAR.\n\ |
188e1fa9 TT |
3173 | Usage: set VAR = EXP\n\ |
3174 | This uses assignment syntax appropriate for the current language\n\ | |
3175 | (VAR = EXP or VAR := EXP for example).\n\ | |
3176 | VAR may be a debugger \"convenience\" variable (names starting\n\ | |
c906108c | 3177 | with $), a register (a few standard names starting with $), or an actual\n\ |
1bedd215 AC |
3178 | variable in the program being debugged. EXP is any valid expression.\n\ |
3179 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
3180 | \n\ | |
3181 | With a subcommand, this command modifies parts of the gdb environment.\n\ | |
3182 | You can see these environment settings with the \"show\" command."), | |
c5aa993b | 3183 | &setlist, "set ", 1, &cmdlist); |
c906108c | 3184 | if (dbx_commands) |
0b39b52e | 3185 | add_com ("assign", class_vars, set_command, _("\ |
590042fc | 3186 | Evaluate expression EXP and assign result to variable VAR.\n\ |
188e1fa9 TT |
3187 | Usage: assign VAR = EXP\n\ |
3188 | This uses assignment syntax appropriate for the current language\n\ | |
3189 | (VAR = EXP or VAR := EXP for example).\n\ | |
3190 | VAR may be a debugger \"convenience\" variable (names starting\n\ | |
c906108c | 3191 | with $), a register (a few standard names starting with $), or an actual\n\ |
1bedd215 AC |
3192 | variable in the program being debugged. EXP is any valid expression.\n\ |
3193 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
c906108c | 3194 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
1bedd215 | 3195 | You can see these environment settings with the \"show\" command.")); |
c906108c | 3196 | |
0df8b418 | 3197 | /* "call" is the same as "set", but handy for dbx users to call fns. */ |
1bedd215 AC |
3198 | c = add_com ("call", class_vars, call_command, _("\ |
3199 | Call a function in the program.\n\ | |
188e1fa9 | 3200 | Usage: call EXP\n\ |
c906108c SS |
3201 | The argument is the function name and arguments, in the notation of the\n\ |
3202 | current working language. The result is printed and saved in the value\n\ | |
1bedd215 | 3203 | history, if it is not void.")); |
7d8062de | 3204 | set_cmd_completer_handle_brkchars (c, print_command_completer); |
c906108c | 3205 | |
1a966eab | 3206 | add_cmd ("variable", class_vars, set_command, _("\ |
590042fc | 3207 | Evaluate expression EXP and assign result to variable VAR.\n\ |
188e1fa9 TT |
3208 | Usage: set variable VAR = EXP\n\ |
3209 | This uses assignment syntax appropriate for the current language\n\ | |
3210 | (VAR = EXP or VAR := EXP for example).\n\ | |
3211 | VAR may be a debugger \"convenience\" variable (names starting\n\ | |
c906108c SS |
3212 | with $), a register (a few standard names starting with $), or an actual\n\ |
3213 | variable in the program being debugged. EXP is any valid expression.\n\ | |
1a966eab | 3214 | This may usually be abbreviated to simply \"set\"."), |
c5aa993b | 3215 | &setlist); |
3fcded8f | 3216 | add_alias_cmd ("var", "variable", class_vars, 0, &setlist); |
c906108c | 3217 | |
7d8062de PA |
3218 | const auto print_opts = make_value_print_options_def_group (nullptr); |
3219 | ||
8abfcabc | 3220 | static const std::string print_help = gdb::option::build_help (_("\ |
1bedd215 | 3221 | Print value of expression EXP.\n\ |
7d8062de PA |
3222 | Usage: print [[OPTION]... --] [/FMT] [EXP]\n\ |
3223 | \n\ | |
3224 | Options:\n\ | |
590042fc PW |
3225 | %OPTIONS%\n\ |
3226 | \n\ | |
7d8062de PA |
3227 | Note: because this command accepts arbitrary expressions, if you\n\ |
3228 | specify any command option, you must use a double dash (\"--\")\n\ | |
3229 | to mark the end of option processing. E.g.: \"print -o -- myobj\".\n\ | |
3230 | \n\ | |
c906108c SS |
3231 | Variables accessible are those of the lexical environment of the selected\n\ |
3232 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
3233 | \n\ | |
3234 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
3235 | $$NUM refers to NUM'th value back from the last one.\n\ | |
1bedd215 AC |
3236 | Names starting with $ refer to registers (with the values they would have\n\ |
3237 | if the program were to return to the stack frame now selected, restoring\n\ | |
c906108c SS |
3238 | all registers saved by frames farther in) or else to debugger\n\ |
3239 | \"convenience\" variables (any such name not a known register).\n\ | |
1bedd215 AC |
3240 | Use assignment expressions to give values to convenience variables.\n\ |
3241 | \n\ | |
c906108c SS |
3242 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ |
3243 | @ is a binary operator for treating consecutive data objects\n\ | |
3244 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
3245 | element is FOO, whose second element is stored in the space following\n\ | |
3246 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
1bedd215 AC |
3247 | resides in memory.\n\ |
3248 | \n\ | |
c906108c | 3249 | EXP may be preceded with /FMT, where FMT is a format letter\n\ |
7d8062de PA |
3250 | but no count or size letter (see \"x\" command)."), |
3251 | print_opts); | |
3252 | ||
3253 | c = add_com ("print", class_vars, print_command, print_help.c_str ()); | |
3254 | set_cmd_completer_handle_brkchars (c, print_command_completer); | |
c906108c | 3255 | add_com_alias ("p", "print", class_vars, 1); |
e93a8774 | 3256 | add_com_alias ("inspect", "print", class_vars, 1); |
c906108c | 3257 | |
35096d9d AC |
3258 | add_setshow_uinteger_cmd ("max-symbolic-offset", no_class, |
3259 | &max_symbolic_offset, _("\ | |
188e1fa9 TT |
3260 | Set the largest offset that will be printed in <SYMBOL+1234> form."), _("\ |
3261 | Show the largest offset that will be printed in <SYMBOL+1234> form."), _("\ | |
f81d1120 PA |
3262 | Tell GDB to only display the symbolic form of an address if the\n\ |
3263 | offset between the closest earlier symbol and the address is less than\n\ | |
3264 | the specified maximum offset. The default is \"unlimited\", which tells GDB\n\ | |
3265 | to always print the symbolic form of an address if any symbol precedes\n\ | |
3266 | it. Zero is equivalent to \"unlimited\"."), | |
35096d9d | 3267 | NULL, |
920d2a44 | 3268 | show_max_symbolic_offset, |
35096d9d | 3269 | &setprintlist, &showprintlist); |
5bf193a2 AC |
3270 | add_setshow_boolean_cmd ("symbol-filename", no_class, |
3271 | &print_symbol_filename, _("\ | |
188e1fa9 TT |
3272 | Set printing of source filename and line number with <SYMBOL>."), _("\ |
3273 | Show printing of source filename and line number with <SYMBOL>."), NULL, | |
5bf193a2 | 3274 | NULL, |
920d2a44 | 3275 | show_print_symbol_filename, |
5bf193a2 | 3276 | &setprintlist, &showprintlist); |
f1421989 HZ |
3277 | |
3278 | add_com ("eval", no_class, eval_command, _("\ | |
188e1fa9 TT |
3279 | Construct a GDB command and then evaluate it.\n\ |
3280 | Usage: eval \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
3281 | Convert the arguments to a string as \"printf\" would, but then\n\ | |
3282 | treat this string as a command line, and evaluate it.")); | |
48136e00 LM |
3283 | |
3284 | /* Memory tagging commands. */ | |
3285 | add_prefix_cmd ("memory-tag", class_vars, memory_tag_command, _("\ | |
3286 | Generic command for printing and manipulating memory tag properties."), | |
3287 | &memory_tag_list, "memory-tag ", 0, &cmdlist); | |
3288 | add_cmd ("print-logical-tag", class_vars, | |
3289 | memory_tag_print_logical_tag_command, | |
3290 | ("Print the logical tag from POINTER.\n\ | |
3291 | Usage: memory-tag print-logical-tag <POINTER>.\n\ | |
3292 | <POINTER> is an expression that evaluates to a pointer.\n\ | |
3293 | Print the logical tag contained in POINTER. The tag interpretation is\n\ | |
3294 | architecture-specific."), | |
3295 | &memory_tag_list); | |
3296 | add_cmd ("print-allocation-tag", class_vars, | |
3297 | memory_tag_print_allocation_tag_command, | |
3298 | _("Print the allocation tag for ADDRESS.\n\ | |
3299 | Usage: memory-tag print-allocation-tag <ADDRESS>.\n\ | |
3300 | <ADDRESS> is an expression that evaluates to a memory address.\n\ | |
3301 | Print the allocation tag associated with the memory address ADDRESS.\n\ | |
3302 | The tag interpretation is architecture-specific."), | |
3303 | &memory_tag_list); | |
3304 | add_cmd ("with-logical-tag", class_vars, memory_tag_with_logical_tag_command, | |
3305 | _("Print a POINTER with a specific logical TAG.\n\ | |
3306 | Usage: memory-tag with-logical-tag <POINTER> <TAG>\n\ | |
3307 | <POINTER> is an expression that evaluates to a pointer.\n\ | |
3308 | <TAG> is a sequence of hex bytes that is interpreted by the architecture\n\ | |
3309 | as a single memory tag."), | |
3310 | &memory_tag_list); | |
3311 | add_cmd ("set-allocation-tag", class_vars, | |
3312 | memory_tag_set_allocation_tag_command, | |
3313 | _("Set the allocation tag(s) for a memory range.\n\ | |
3314 | Usage: memory-tag set-allocation-tag <ADDRESS> <LENGTH> <TAG_BYTES>\n\ | |
3315 | <ADDRESS> is an expression that evaluates to a memory address\n\ | |
3316 | <LENGTH> is the number of bytes that is added to <ADDRESS> to calculate\n\ | |
3317 | the memory range.\n\ | |
3318 | <TAG_BYTES> is a sequence of hex bytes that is interpreted by the\n\ | |
3319 | architecture as one or more memory tags.\n\ | |
3320 | Sets the tags of the memory range [ADDRESS, ADDRESS + LENGTH)\n\ | |
3321 | to TAG_BYTES.\n\ | |
3322 | \n\ | |
3323 | If the number of tags is greater than or equal to the number of tag granules\n\ | |
3324 | in the [ADDRESS, ADDRESS + LENGTH) range, only the tags up to the\n\ | |
3325 | number of tag granules are updated.\n\ | |
3326 | \n\ | |
3327 | If the number of tags is less than the number of tag granules, then the\n\ | |
3328 | command is a fill operation. The TAG_BYTES are interpreted as a pattern\n\ | |
3329 | that gets repeated until the number of tag granules in the memory range\n\ | |
3330 | [ADDRESS, ADDRESS + LENGTH) is updated."), | |
3331 | &memory_tag_list); | |
3332 | add_cmd ("check", class_vars, memory_tag_check_command, | |
3333 | _("Validate a pointer's logical tag against the allocation tag.\n\ | |
3334 | Usage: memory-tag check <POINTER>\n\ | |
3335 | <POINTER> is an expression that evaluates to a pointer\n\ | |
3336 | Fetch the logical and allocation tags for POINTER and compare them\n\ | |
3337 | for equality. If the tags do not match, print additional information about\n\ | |
3338 | the tag mismatch."), | |
3339 | &memory_tag_list); | |
c906108c | 3340 | } |