Commit | Line | Data |
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c906108c | 1 | /* Print values for GNU debugger GDB. |
e2ad119d | 2 | |
b811d2c2 | 3 | Copyright (C) 1986-2020 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
c906108c SS |
21 | #include "frame.h" |
22 | #include "symtab.h" | |
23 | #include "gdbtypes.h" | |
24 | #include "value.h" | |
25 | #include "language.h" | |
1f6f6e21 | 26 | #include "c-lang.h" |
c906108c SS |
27 | #include "expression.h" |
28 | #include "gdbcore.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "target.h" | |
31 | #include "breakpoint.h" | |
32 | #include "demangle.h" | |
50f182aa | 33 | #include "gdb-demangle.h" |
c906108c SS |
34 | #include "valprint.h" |
35 | #include "annotate.h" | |
c5aa993b JM |
36 | #include "symfile.h" /* for overlay functions */ |
37 | #include "objfiles.h" /* ditto */ | |
c94fdfd0 | 38 | #include "completer.h" /* for completion functions */ |
8b93c638 | 39 | #include "ui-out.h" |
fe898f56 | 40 | #include "block.h" |
92bf2b80 | 41 | #include "disasm.h" |
f69fdf9b | 42 | #include "target-float.h" |
76727919 | 43 | #include "observable.h" |
a3247a22 | 44 | #include "solist.h" |
a3247a22 | 45 | #include "parser-defs.h" |
6c7a06a3 | 46 | #include "charset.h" |
704e9165 | 47 | #include "arch-utils.h" |
e9cafbcc | 48 | #include "cli/cli-utils.h" |
7d8062de | 49 | #include "cli/cli-option.h" |
01770bbd | 50 | #include "cli/cli-script.h" |
80ae2043 | 51 | #include "cli/cli-style.h" |
268a13a5 | 52 | #include "gdbsupport/format.h" |
05cba821 | 53 | #include "source.h" |
268a13a5 TT |
54 | #include "gdbsupport/byte-vector.h" |
55 | #include "gdbsupport/gdb_optional.h" | |
c906108c | 56 | |
c906108c SS |
57 | /* Last specified output format. */ |
58 | ||
a6bac58e | 59 | static char last_format = 0; |
c906108c SS |
60 | |
61 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
62 | ||
63 | static char last_size = 'w'; | |
64 | ||
9be2ae8f TT |
65 | /* Last specified count for the 'x' command. */ |
66 | ||
67 | static int last_count; | |
68 | ||
5d3729b5 | 69 | /* Default address to examine next, and associated architecture. */ |
c906108c | 70 | |
5d3729b5 | 71 | static struct gdbarch *next_gdbarch; |
c906108c SS |
72 | static CORE_ADDR next_address; |
73 | ||
a4642986 MR |
74 | /* Number of delay instructions following current disassembled insn. */ |
75 | ||
76 | static int branch_delay_insns; | |
77 | ||
c906108c SS |
78 | /* Last address examined. */ |
79 | ||
80 | static CORE_ADDR last_examine_address; | |
81 | ||
82 | /* Contents of last address examined. | |
83 | This is not valid past the end of the `x' command! */ | |
84 | ||
9b558729 | 85 | static value_ref_ptr last_examine_value; |
c906108c SS |
86 | |
87 | /* Largest offset between a symbolic value and an address, that will be | |
88 | printed as `0x1234 <symbol+offset>'. */ | |
89 | ||
90 | static unsigned int max_symbolic_offset = UINT_MAX; | |
920d2a44 AC |
91 | static void |
92 | show_max_symbolic_offset (struct ui_file *file, int from_tty, | |
93 | struct cmd_list_element *c, const char *value) | |
94 | { | |
3e43a32a MS |
95 | fprintf_filtered (file, |
96 | _("The largest offset that will be " | |
97 | "printed in <symbol+1234> form is %s.\n"), | |
920d2a44 AC |
98 | value); |
99 | } | |
c906108c SS |
100 | |
101 | /* Append the source filename and linenumber of the symbol when | |
102 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
491144b5 | 103 | static bool print_symbol_filename = false; |
920d2a44 AC |
104 | static void |
105 | show_print_symbol_filename (struct ui_file *file, int from_tty, | |
106 | struct cmd_list_element *c, const char *value) | |
107 | { | |
3e43a32a MS |
108 | fprintf_filtered (file, _("Printing of source filename and " |
109 | "line number with <symbol> is %s.\n"), | |
920d2a44 AC |
110 | value); |
111 | } | |
c906108c SS |
112 | |
113 | /* Number of auto-display expression currently being displayed. | |
9d8fa392 | 114 | So that we can disable it if we get a signal within it. |
c906108c SS |
115 | -1 when not doing one. */ |
116 | ||
5a18e302 | 117 | static int current_display_number; |
c906108c | 118 | |
c906108c | 119 | struct display |
c5aa993b JM |
120 | { |
121 | /* Chain link to next auto-display item. */ | |
122 | struct display *next; | |
6c95b8df | 123 | |
fa8a61dc TT |
124 | /* The expression as the user typed it. */ |
125 | char *exp_string; | |
6c95b8df | 126 | |
c5aa993b | 127 | /* Expression to be evaluated and displayed. */ |
4d01a485 | 128 | expression_up exp; |
6c95b8df | 129 | |
c5aa993b JM |
130 | /* Item number of this auto-display item. */ |
131 | int number; | |
6c95b8df | 132 | |
c5aa993b JM |
133 | /* Display format specified. */ |
134 | struct format_data format; | |
6c95b8df PA |
135 | |
136 | /* Program space associated with `block'. */ | |
137 | struct program_space *pspace; | |
138 | ||
0df8b418 | 139 | /* Innermost block required by this expression when evaluated. */ |
270140bd | 140 | const struct block *block; |
6c95b8df | 141 | |
0df8b418 | 142 | /* Status of this display (enabled or disabled). */ |
b5de0fa7 | 143 | int enabled_p; |
c5aa993b | 144 | }; |
c906108c SS |
145 | |
146 | /* Chain of expressions whose values should be displayed | |
147 | automatically each time the program stops. */ | |
148 | ||
149 | static struct display *display_chain; | |
150 | ||
151 | static int display_number; | |
152 | ||
c9174737 PA |
153 | /* Walk the following statement or block through all displays. |
154 | ALL_DISPLAYS_SAFE does so even if the statement deletes the current | |
155 | display. */ | |
3c3fe74c PA |
156 | |
157 | #define ALL_DISPLAYS(B) \ | |
158 | for (B = display_chain; B; B = B->next) | |
159 | ||
c9174737 PA |
160 | #define ALL_DISPLAYS_SAFE(B,TMP) \ |
161 | for (B = display_chain; \ | |
162 | B ? (TMP = B->next, 1): 0; \ | |
163 | B = TMP) | |
164 | ||
0df8b418 | 165 | /* Prototypes for local functions. */ |
c906108c | 166 | |
a14ed312 | 167 | static void do_one_display (struct display *); |
c906108c | 168 | \f |
c5aa993b | 169 | |
c906108c SS |
170 | /* Decode a format specification. *STRING_PTR should point to it. |
171 | OFORMAT and OSIZE are used as defaults for the format and size | |
172 | if none are given in the format specification. | |
173 | If OSIZE is zero, then the size field of the returned value | |
174 | should be set only if a size is explicitly specified by the | |
175 | user. | |
176 | The structure returned describes all the data | |
177 | found in the specification. In addition, *STRING_PTR is advanced | |
178 | past the specification and past all whitespace following it. */ | |
179 | ||
180 | static struct format_data | |
6f937416 | 181 | decode_format (const char **string_ptr, int oformat, int osize) |
c906108c SS |
182 | { |
183 | struct format_data val; | |
6f937416 | 184 | const char *p = *string_ptr; |
c906108c SS |
185 | |
186 | val.format = '?'; | |
187 | val.size = '?'; | |
188 | val.count = 1; | |
a6bac58e | 189 | val.raw = 0; |
c906108c | 190 | |
bb556f1f TK |
191 | if (*p == '-') |
192 | { | |
193 | val.count = -1; | |
194 | p++; | |
195 | } | |
c906108c | 196 | if (*p >= '0' && *p <= '9') |
bb556f1f | 197 | val.count *= atoi (p); |
c5aa993b JM |
198 | while (*p >= '0' && *p <= '9') |
199 | p++; | |
c906108c SS |
200 | |
201 | /* Now process size or format letters that follow. */ | |
202 | ||
203 | while (1) | |
204 | { | |
205 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
206 | val.size = *p++; | |
a6bac58e TT |
207 | else if (*p == 'r') |
208 | { | |
209 | val.raw = 1; | |
210 | p++; | |
211 | } | |
c906108c SS |
212 | else if (*p >= 'a' && *p <= 'z') |
213 | val.format = *p++; | |
214 | else | |
215 | break; | |
216 | } | |
217 | ||
2f433492 | 218 | *string_ptr = skip_spaces (p); |
c906108c SS |
219 | |
220 | /* Set defaults for format and size if not specified. */ | |
221 | if (val.format == '?') | |
222 | { | |
223 | if (val.size == '?') | |
224 | { | |
225 | /* Neither has been specified. */ | |
226 | val.format = oformat; | |
227 | val.size = osize; | |
228 | } | |
229 | else | |
230 | /* If a size is specified, any format makes a reasonable | |
231 | default except 'i'. */ | |
232 | val.format = oformat == 'i' ? 'x' : oformat; | |
233 | } | |
234 | else if (val.size == '?') | |
235 | switch (val.format) | |
236 | { | |
237 | case 'a': | |
5d3729b5 UW |
238 | /* Pick the appropriate size for an address. This is deferred |
239 | until do_examine when we know the actual architecture to use. | |
240 | A special size value of 'a' is used to indicate this case. */ | |
241 | val.size = osize ? 'a' : osize; | |
c906108c SS |
242 | break; |
243 | case 'f': | |
244 | /* Floating point has to be word or giantword. */ | |
245 | if (osize == 'w' || osize == 'g') | |
246 | val.size = osize; | |
247 | else | |
248 | /* Default it to giantword if the last used size is not | |
249 | appropriate. */ | |
250 | val.size = osize ? 'g' : osize; | |
251 | break; | |
252 | case 'c': | |
253 | /* Characters default to one byte. */ | |
254 | val.size = osize ? 'b' : osize; | |
255 | break; | |
9a22f0d0 | 256 | case 's': |
3e43a32a MS |
257 | /* Display strings with byte size chars unless explicitly |
258 | specified. */ | |
9a22f0d0 PM |
259 | val.size = '\0'; |
260 | break; | |
261 | ||
c906108c SS |
262 | default: |
263 | /* The default is the size most recently specified. */ | |
264 | val.size = osize; | |
265 | } | |
266 | ||
267 | return val; | |
268 | } | |
269 | \f | |
79a45b7d | 270 | /* Print value VAL on stream according to OPTIONS. |
c906108c | 271 | Do not end with a newline. |
c906108c | 272 | SIZE is the letter for the size of datum being printed. |
ea37ba09 DJ |
273 | This is used to pad hex numbers so they line up. SIZE is 0 |
274 | for print / output and set for examine. */ | |
c906108c SS |
275 | |
276 | static void | |
79a45b7d TT |
277 | print_formatted (struct value *val, int size, |
278 | const struct value_print_options *options, | |
fba45db2 | 279 | struct ui_file *stream) |
c906108c | 280 | { |
df407dfe | 281 | struct type *type = check_typedef (value_type (val)); |
c906108c SS |
282 | int len = TYPE_LENGTH (type); |
283 | ||
284 | if (VALUE_LVAL (val) == lval_memory) | |
42ae5230 | 285 | next_address = value_address (val) + len; |
c906108c | 286 | |
ea37ba09 | 287 | if (size) |
c906108c | 288 | { |
79a45b7d | 289 | switch (options->format) |
ea37ba09 DJ |
290 | { |
291 | case 's': | |
6c7a06a3 TT |
292 | { |
293 | struct type *elttype = value_type (val); | |
ad3bbd48 | 294 | |
42ae5230 | 295 | next_address = (value_address (val) |
09ca9e2e | 296 | + val_print_string (elttype, NULL, |
42ae5230 | 297 | value_address (val), -1, |
9a22f0d0 | 298 | stream, options) * len); |
6c7a06a3 | 299 | } |
ea37ba09 | 300 | return; |
c906108c | 301 | |
ea37ba09 DJ |
302 | case 'i': |
303 | /* We often wrap here if there are long symbolic names. */ | |
304 | wrap_here (" "); | |
42ae5230 | 305 | next_address = (value_address (val) |
13274fc3 UW |
306 | + gdb_print_insn (get_type_arch (type), |
307 | value_address (val), stream, | |
ea37ba09 DJ |
308 | &branch_delay_insns)); |
309 | return; | |
310 | } | |
c906108c | 311 | } |
ea37ba09 | 312 | |
79a45b7d | 313 | if (options->format == 0 || options->format == 's' |
4e885b20 | 314 | || TYPE_CODE (type) == TYPE_CODE_REF |
ea37ba09 DJ |
315 | || TYPE_CODE (type) == TYPE_CODE_ARRAY |
316 | || TYPE_CODE (type) == TYPE_CODE_STRING | |
317 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
318 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
319 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
79a45b7d | 320 | value_print (val, stream, options); |
ea37ba09 | 321 | else |
b021a221 MS |
322 | /* User specified format, so don't look to the type to tell us |
323 | what to do. */ | |
4dba70ee | 324 | value_print_scalar_formatted (val, options, size, stream); |
c906108c SS |
325 | } |
326 | ||
b806fb9a UW |
327 | /* Return builtin floating point type of same length as TYPE. |
328 | If no such type is found, return TYPE itself. */ | |
329 | static struct type * | |
50810684 | 330 | float_type_from_length (struct type *type) |
b806fb9a | 331 | { |
50810684 | 332 | struct gdbarch *gdbarch = get_type_arch (type); |
b806fb9a | 333 | const struct builtin_type *builtin = builtin_type (gdbarch); |
b806fb9a | 334 | |
744a8059 | 335 | if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_float)) |
b806fb9a | 336 | type = builtin->builtin_float; |
744a8059 | 337 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_double)) |
b806fb9a | 338 | type = builtin->builtin_double; |
744a8059 | 339 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_long_double)) |
b806fb9a UW |
340 | type = builtin->builtin_long_double; |
341 | ||
342 | return type; | |
343 | } | |
344 | ||
c906108c | 345 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, |
ab2188aa PA |
346 | according to OPTIONS and SIZE on STREAM. Formats s and i are not |
347 | supported at this level. */ | |
c906108c SS |
348 | |
349 | void | |
7c543f7b | 350 | print_scalar_formatted (const gdb_byte *valaddr, struct type *type, |
79a45b7d TT |
351 | const struct value_print_options *options, |
352 | int size, struct ui_file *stream) | |
c906108c | 353 | { |
50810684 | 354 | struct gdbarch *gdbarch = get_type_arch (type); |
c906108c | 355 | unsigned int len = TYPE_LENGTH (type); |
34877895 | 356 | enum bfd_endian byte_order = type_byte_order (type); |
c906108c | 357 | |
ab2188aa PA |
358 | /* String printing should go through val_print_scalar_formatted. */ |
359 | gdb_assert (options->format != 's'); | |
ea37ba09 | 360 | |
ef166cf4 | 361 | /* If the value is a pointer, and pointers and addresses are not the |
d0aee0c4 | 362 | same, then at this point, the value's length (in target bytes) is |
17a912b6 | 363 | gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */ |
ef166cf4 | 364 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
69feb676 | 365 | len = gdbarch_addr_bit (gdbarch) / TARGET_CHAR_BIT; |
ef166cf4 | 366 | |
c906108c SS |
367 | /* If we are printing it as unsigned, truncate it in case it is actually |
368 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
369 | (if shorts are 16 bits) instead of 4294967295). */ | |
d9109c80 TT |
370 | if (options->format != 'c' |
371 | && (options->format != 'd' || TYPE_UNSIGNED (type))) | |
c906108c | 372 | { |
d9109c80 TT |
373 | if (len < TYPE_LENGTH (type) && byte_order == BFD_ENDIAN_BIG) |
374 | valaddr += TYPE_LENGTH (type) - len; | |
c906108c SS |
375 | } |
376 | ||
d9109c80 | 377 | if (size != 0 && (options->format == 'x' || options->format == 't')) |
c906108c | 378 | { |
d9109c80 TT |
379 | /* Truncate to fit. */ |
380 | unsigned newlen; | |
381 | switch (size) | |
c906108c | 382 | { |
d9109c80 TT |
383 | case 'b': |
384 | newlen = 1; | |
385 | break; | |
386 | case 'h': | |
387 | newlen = 2; | |
388 | break; | |
389 | case 'w': | |
390 | newlen = 4; | |
391 | break; | |
392 | case 'g': | |
393 | newlen = 8; | |
394 | break; | |
395 | default: | |
396 | error (_("Undefined output size \"%c\"."), size); | |
c906108c | 397 | } |
d9109c80 TT |
398 | if (newlen < len && byte_order == BFD_ENDIAN_BIG) |
399 | valaddr += len - newlen; | |
400 | len = newlen; | |
401 | } | |
c906108c | 402 | |
d9109c80 TT |
403 | /* Historically gdb has printed floats by first casting them to a |
404 | long, and then printing the long. PR cli/16242 suggests changing | |
4e962e74 TT |
405 | this to using C-style hex float format. |
406 | ||
407 | Biased range types must also be unbiased here; the unbiasing is | |
408 | done by unpack_long. */ | |
409 | gdb::byte_vector converted_bytes; | |
410 | /* Some cases below will unpack the value again. In the biased | |
411 | range case, we want to avoid this, so we store the unpacked value | |
412 | here for possible use later. */ | |
413 | gdb::optional<LONGEST> val_long; | |
414 | if ((TYPE_CODE (type) == TYPE_CODE_FLT | |
415 | && (options->format == 'o' | |
416 | || options->format == 'x' | |
417 | || options->format == 't' | |
418 | || options->format == 'z' | |
419 | || options->format == 'd' | |
420 | || options->format == 'u')) | |
421 | || (TYPE_CODE (type) == TYPE_CODE_RANGE | |
422 | && TYPE_RANGE_DATA (type)->bias != 0)) | |
d9109c80 | 423 | { |
4e962e74 TT |
424 | val_long.emplace (unpack_long (type, valaddr)); |
425 | converted_bytes.resize (TYPE_LENGTH (type)); | |
426 | store_signed_integer (converted_bytes.data (), TYPE_LENGTH (type), | |
427 | byte_order, *val_long); | |
428 | valaddr = converted_bytes.data (); | |
d9109c80 | 429 | } |
c906108c | 430 | |
fdf0cbc2 UW |
431 | /* Printing a non-float type as 'f' will interpret the data as if it were |
432 | of a floating-point type of the same length, if that exists. Otherwise, | |
433 | the data is printed as integer. */ | |
434 | char format = options->format; | |
435 | if (format == 'f' && TYPE_CODE (type) != TYPE_CODE_FLT) | |
436 | { | |
437 | type = float_type_from_length (type); | |
438 | if (TYPE_CODE (type) != TYPE_CODE_FLT) | |
439 | format = 0; | |
440 | } | |
441 | ||
442 | switch (format) | |
d9109c80 TT |
443 | { |
444 | case 'o': | |
445 | print_octal_chars (stream, valaddr, len, byte_order); | |
446 | break; | |
d6382fff TT |
447 | case 'd': |
448 | print_decimal_chars (stream, valaddr, len, true, byte_order); | |
449 | break; | |
c906108c | 450 | case 'u': |
d9109c80 | 451 | print_decimal_chars (stream, valaddr, len, false, byte_order); |
c906108c | 452 | break; |
d9109c80 | 453 | case 0: |
d9109c80 TT |
454 | if (TYPE_CODE (type) != TYPE_CODE_FLT) |
455 | { | |
456 | print_decimal_chars (stream, valaddr, len, !TYPE_UNSIGNED (type), | |
457 | byte_order); | |
458 | break; | |
459 | } | |
460 | /* FALLTHROUGH */ | |
461 | case 'f': | |
d9109c80 | 462 | print_floating (valaddr, type, stream); |
c906108c SS |
463 | break; |
464 | ||
d9109c80 TT |
465 | case 't': |
466 | print_binary_chars (stream, valaddr, len, byte_order, size > 0); | |
467 | break; | |
468 | case 'x': | |
469 | print_hex_chars (stream, valaddr, len, byte_order, size > 0); | |
470 | break; | |
471 | case 'z': | |
472 | print_hex_chars (stream, valaddr, len, byte_order, true); | |
c906108c | 473 | break; |
c906108c | 474 | case 'c': |
79a45b7d TT |
475 | { |
476 | struct value_print_options opts = *options; | |
69feb676 | 477 | |
4e962e74 TT |
478 | if (!val_long.has_value ()) |
479 | val_long.emplace (unpack_long (type, valaddr)); | |
d9109c80 | 480 | |
ad3bbd48 | 481 | opts.format = 0; |
79a45b7d | 482 | if (TYPE_UNSIGNED (type)) |
69feb676 UW |
483 | type = builtin_type (gdbarch)->builtin_true_unsigned_char; |
484 | else | |
485 | type = builtin_type (gdbarch)->builtin_true_char; | |
486 | ||
4e962e74 | 487 | value_print (value_from_longest (type, *val_long), stream, &opts); |
79a45b7d | 488 | } |
c906108c SS |
489 | break; |
490 | ||
d9109c80 | 491 | case 'a': |
c906108c | 492 | { |
4e962e74 TT |
493 | if (!val_long.has_value ()) |
494 | val_long.emplace (unpack_long (type, valaddr)); | |
495 | print_address (gdbarch, *val_long, stream); | |
c906108c SS |
496 | } |
497 | break; | |
498 | ||
499 | default: | |
fdf0cbc2 | 500 | error (_("Undefined output format \"%c\"."), format); |
c906108c SS |
501 | } |
502 | } | |
503 | ||
504 | /* Specify default address for `x' command. | |
675dcf4f | 505 | The `info lines' command uses this. */ |
c906108c SS |
506 | |
507 | void | |
8b9b9e1a | 508 | set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 509 | { |
8b9b9e1a UW |
510 | struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
511 | ||
5d3729b5 | 512 | next_gdbarch = gdbarch; |
c906108c SS |
513 | next_address = addr; |
514 | ||
515 | /* Make address available to the user as $_. */ | |
516 | set_internalvar (lookup_internalvar ("_"), | |
8b9b9e1a | 517 | value_from_pointer (ptr_type, addr)); |
c906108c SS |
518 | } |
519 | ||
520 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
521 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
522 | Optionally also print source file and line number, if available. | |
523 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
524 | or to interpret it as a possible C++ name and convert it back to source | |
525 | form. However note that DO_DEMANGLE can be overridden by the specific | |
9cb709b6 TT |
526 | settings of the demangle and asm_demangle variables. Returns |
527 | non-zero if anything was printed; zero otherwise. */ | |
c906108c | 528 | |
9cb709b6 | 529 | int |
22e722e1 DJ |
530 | print_address_symbolic (struct gdbarch *gdbarch, CORE_ADDR addr, |
531 | struct ui_file *stream, | |
a121b7c1 | 532 | int do_demangle, const char *leadin) |
dfcd3bfb | 533 | { |
c7110220 | 534 | std::string name, filename; |
dfcd3bfb JM |
535 | int unmapped = 0; |
536 | int offset = 0; | |
537 | int line = 0; | |
538 | ||
2dc80cf8 KB |
539 | if (build_address_symbolic (gdbarch, addr, do_demangle, false, &name, |
540 | &offset, &filename, &line, &unmapped)) | |
c7110220 | 541 | return 0; |
dfcd3bfb JM |
542 | |
543 | fputs_filtered (leadin, stream); | |
544 | if (unmapped) | |
545 | fputs_filtered ("<*", stream); | |
546 | else | |
547 | fputs_filtered ("<", stream); | |
af79b68d | 548 | fputs_styled (name.c_str (), function_name_style.style (), stream); |
dfcd3bfb | 549 | if (offset != 0) |
a1530dc7 | 550 | fprintf_filtered (stream, "%+d", offset); |
dfcd3bfb JM |
551 | |
552 | /* Append source filename and line number if desired. Give specific | |
553 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
c7110220 | 554 | if (print_symbol_filename && !filename.empty ()) |
dfcd3bfb | 555 | { |
af79b68d TT |
556 | fputs_filtered (line == -1 ? " in " : " at ", stream); |
557 | fputs_styled (filename.c_str (), file_name_style.style (), stream); | |
dfcd3bfb | 558 | if (line != -1) |
af79b68d | 559 | fprintf_filtered (stream, ":%d", line); |
dfcd3bfb JM |
560 | } |
561 | if (unmapped) | |
562 | fputs_filtered ("*>", stream); | |
563 | else | |
564 | fputs_filtered (">", stream); | |
565 | ||
9cb709b6 | 566 | return 1; |
dfcd3bfb JM |
567 | } |
568 | ||
c7110220 TT |
569 | /* See valprint.h. */ |
570 | ||
dfcd3bfb | 571 | int |
22e722e1 DJ |
572 | build_address_symbolic (struct gdbarch *gdbarch, |
573 | CORE_ADDR addr, /* IN */ | |
2dc80cf8 KB |
574 | bool do_demangle, /* IN */ |
575 | bool prefer_sym_over_minsym, /* IN */ | |
c7110220 | 576 | std::string *name, /* OUT */ |
dfcd3bfb | 577 | int *offset, /* OUT */ |
c7110220 | 578 | std::string *filename, /* OUT */ |
dfcd3bfb JM |
579 | int *line, /* OUT */ |
580 | int *unmapped) /* OUT */ | |
c906108c | 581 | { |
77e371c0 | 582 | struct bound_minimal_symbol msymbol; |
c906108c | 583 | struct symbol *symbol; |
c906108c | 584 | CORE_ADDR name_location = 0; |
714835d5 | 585 | struct obj_section *section = NULL; |
0d5cff50 | 586 | const char *name_temp = ""; |
dfcd3bfb | 587 | |
89c83b10 | 588 | /* Let's say it is mapped (not unmapped). */ |
dfcd3bfb | 589 | *unmapped = 0; |
c906108c | 590 | |
dfcd3bfb | 591 | /* Determine if the address is in an overlay, and whether it is |
675dcf4f | 592 | mapped. */ |
c906108c SS |
593 | if (overlay_debugging) |
594 | { | |
595 | section = find_pc_overlay (addr); | |
596 | if (pc_in_unmapped_range (addr, section)) | |
597 | { | |
dfcd3bfb | 598 | *unmapped = 1; |
c906108c SS |
599 | addr = overlay_mapped_address (addr, section); |
600 | } | |
601 | } | |
602 | ||
2dc80cf8 KB |
603 | /* Try to find the address in both the symbol table and the minsyms. |
604 | In most cases, we'll prefer to use the symbol instead of the | |
605 | minsym. However, there are cases (see below) where we'll choose | |
606 | to use the minsym instead. */ | |
c906108c SS |
607 | |
608 | /* This is defective in the sense that it only finds text symbols. So | |
609 | really this is kind of pointless--we should make sure that the | |
610 | minimal symbols have everything we need (by changing that we could | |
611 | save some memory, but for many debug format--ELF/DWARF or | |
612 | anything/stabs--it would be inconvenient to eliminate those minimal | |
613 | symbols anyway). */ | |
77e371c0 | 614 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section); |
c906108c SS |
615 | symbol = find_pc_sect_function (addr, section); |
616 | ||
617 | if (symbol) | |
618 | { | |
22e722e1 DJ |
619 | /* If this is a function (i.e. a code address), strip out any |
620 | non-address bits. For instance, display a pointer to the | |
621 | first instruction of a Thumb function as <function>; the | |
622 | second instruction will be <function+2>, even though the | |
623 | pointer is <function+3>. This matches the ISA behavior. */ | |
624 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
625 | ||
2b1ffcfd | 626 | name_location = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (symbol)); |
406fc7fb | 627 | if (do_demangle || asm_demangle) |
987012b8 | 628 | name_temp = symbol->print_name (); |
c906108c | 629 | else |
987012b8 | 630 | name_temp = symbol->linkage_name (); |
c906108c SS |
631 | } |
632 | ||
77e371c0 TT |
633 | if (msymbol.minsym != NULL |
634 | && MSYMBOL_HAS_SIZE (msymbol.minsym) | |
635 | && MSYMBOL_SIZE (msymbol.minsym) == 0 | |
636 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text | |
637 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text_gnu_ifunc | |
638 | && MSYMBOL_TYPE (msymbol.minsym) != mst_file_text) | |
639 | msymbol.minsym = NULL; | |
9cb709b6 | 640 | |
77e371c0 | 641 | if (msymbol.minsym != NULL) |
c906108c | 642 | { |
2dc80cf8 KB |
643 | /* Use the minsym if no symbol is found. |
644 | ||
645 | Additionally, use the minsym instead of a (found) symbol if | |
646 | the following conditions all hold: | |
647 | 1) The prefer_sym_over_minsym flag is false. | |
648 | 2) The minsym address is identical to that of the address under | |
649 | consideration. | |
650 | 3) The symbol address is not identical to that of the address | |
651 | under consideration. */ | |
652 | if (symbol == NULL || | |
653 | (!prefer_sym_over_minsym | |
654 | && BMSYMBOL_VALUE_ADDRESS (msymbol) == addr | |
655 | && name_location != addr)) | |
c906108c | 656 | { |
fe8400b4 WN |
657 | /* If this is a function (i.e. a code address), strip out any |
658 | non-address bits. For instance, display a pointer to the | |
659 | first instruction of a Thumb function as <function>; the | |
660 | second instruction will be <function+2>, even though the | |
661 | pointer is <function+3>. This matches the ISA behavior. */ | |
77e371c0 TT |
662 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_text |
663 | || MSYMBOL_TYPE (msymbol.minsym) == mst_text_gnu_ifunc | |
664 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_text | |
665 | || MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
fe8400b4 WN |
666 | addr = gdbarch_addr_bits_remove (gdbarch, addr); |
667 | ||
c906108c | 668 | symbol = 0; |
77e371c0 | 669 | name_location = BMSYMBOL_VALUE_ADDRESS (msymbol); |
406fc7fb | 670 | if (do_demangle || asm_demangle) |
c9d95fa3 | 671 | name_temp = msymbol.minsym->print_name (); |
c906108c | 672 | else |
c9d95fa3 | 673 | name_temp = msymbol.minsym->linkage_name (); |
c906108c SS |
674 | } |
675 | } | |
77e371c0 | 676 | if (symbol == NULL && msymbol.minsym == NULL) |
dfcd3bfb | 677 | return 1; |
c906108c | 678 | |
c906108c SS |
679 | /* If the nearest symbol is too far away, don't print anything symbolic. */ |
680 | ||
681 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
682 | CORE_ADDR. But when we detect unsigned wraparound in the | |
683 | CORE_ADDR math, we ignore this test and print the offset, | |
684 | because addr+max_symbolic_offset has wrapped through the end | |
685 | of the address space back to the beginning, giving bogus comparison. */ | |
686 | if (addr > name_location + max_symbolic_offset | |
687 | && name_location + max_symbolic_offset > name_location) | |
dfcd3bfb | 688 | return 1; |
c906108c | 689 | |
a1530dc7 | 690 | *offset = (LONGEST) addr - name_location; |
dfcd3bfb | 691 | |
c7110220 | 692 | *name = name_temp; |
c906108c | 693 | |
c906108c SS |
694 | if (print_symbol_filename) |
695 | { | |
696 | struct symtab_and_line sal; | |
697 | ||
698 | sal = find_pc_sect_line (addr, section, 0); | |
699 | ||
700 | if (sal.symtab) | |
dfcd3bfb | 701 | { |
c7110220 | 702 | *filename = symtab_to_filename_for_display (sal.symtab); |
dfcd3bfb JM |
703 | *line = sal.line; |
704 | } | |
c906108c | 705 | } |
dfcd3bfb | 706 | return 0; |
c906108c SS |
707 | } |
708 | ||
c906108c SS |
709 | |
710 | /* Print address ADDR symbolically on STREAM. | |
711 | First print it as a number. Then perhaps print | |
712 | <SYMBOL + OFFSET> after the number. */ | |
713 | ||
714 | void | |
5af949e3 UW |
715 | print_address (struct gdbarch *gdbarch, |
716 | CORE_ADDR addr, struct ui_file *stream) | |
c906108c | 717 | { |
35fb8261 | 718 | fputs_styled (paddress (gdbarch, addr), address_style.style (), stream); |
22e722e1 | 719 | print_address_symbolic (gdbarch, addr, stream, asm_demangle, " "); |
c906108c SS |
720 | } |
721 | ||
2b28d209 PP |
722 | /* Return a prefix for instruction address: |
723 | "=> " for current instruction, else " ". */ | |
724 | ||
725 | const char * | |
726 | pc_prefix (CORE_ADDR addr) | |
727 | { | |
728 | if (has_stack_frames ()) | |
729 | { | |
730 | struct frame_info *frame; | |
731 | CORE_ADDR pc; | |
732 | ||
733 | frame = get_selected_frame (NULL); | |
ce406537 | 734 | if (get_frame_pc_if_available (frame, &pc) && pc == addr) |
2b28d209 PP |
735 | return "=> "; |
736 | } | |
737 | return " "; | |
738 | } | |
739 | ||
c906108c SS |
740 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE |
741 | controls whether to print the symbolic name "raw" or demangled. | |
9cb709b6 | 742 | Return non-zero if anything was printed; zero otherwise. */ |
c906108c | 743 | |
9cb709b6 | 744 | int |
edf0c1b7 TT |
745 | print_address_demangle (const struct value_print_options *opts, |
746 | struct gdbarch *gdbarch, CORE_ADDR addr, | |
5af949e3 | 747 | struct ui_file *stream, int do_demangle) |
c906108c | 748 | { |
1d51a733 | 749 | if (opts->addressprint) |
c906108c | 750 | { |
35fb8261 | 751 | fputs_styled (paddress (gdbarch, addr), address_style.style (), stream); |
22e722e1 | 752 | print_address_symbolic (gdbarch, addr, stream, do_demangle, " "); |
c906108c SS |
753 | } |
754 | else | |
755 | { | |
9cb709b6 | 756 | return print_address_symbolic (gdbarch, addr, stream, do_demangle, ""); |
c906108c | 757 | } |
9cb709b6 | 758 | return 1; |
c906108c SS |
759 | } |
760 | \f | |
761 | ||
bb556f1f TK |
762 | /* Find the address of the instruction that is INST_COUNT instructions before |
763 | the instruction at ADDR. | |
764 | Since some architectures have variable-length instructions, we can't just | |
765 | simply subtract INST_COUNT * INSN_LEN from ADDR. Instead, we use line | |
766 | number information to locate the nearest known instruction boundary, | |
767 | and disassemble forward from there. If we go out of the symbol range | |
768 | during disassembling, we return the lowest address we've got so far and | |
769 | set the number of instructions read to INST_READ. */ | |
770 | ||
771 | static CORE_ADDR | |
772 | find_instruction_backward (struct gdbarch *gdbarch, CORE_ADDR addr, | |
773 | int inst_count, int *inst_read) | |
774 | { | |
775 | /* The vector PCS is used to store instruction addresses within | |
776 | a pc range. */ | |
777 | CORE_ADDR loop_start, loop_end, p; | |
52d214d3 | 778 | std::vector<CORE_ADDR> pcs; |
bb556f1f | 779 | struct symtab_and_line sal; |
bb556f1f TK |
780 | |
781 | *inst_read = 0; | |
782 | loop_start = loop_end = addr; | |
783 | ||
784 | /* In each iteration of the outer loop, we get a pc range that ends before | |
785 | LOOP_START, then we count and store every instruction address of the range | |
786 | iterated in the loop. | |
787 | If the number of instructions counted reaches INST_COUNT, return the | |
788 | stored address that is located INST_COUNT instructions back from ADDR. | |
789 | If INST_COUNT is not reached, we subtract the number of counted | |
790 | instructions from INST_COUNT, and go to the next iteration. */ | |
791 | do | |
792 | { | |
52d214d3 | 793 | pcs.clear (); |
bb556f1f TK |
794 | sal = find_pc_sect_line (loop_start, NULL, 1); |
795 | if (sal.line <= 0) | |
796 | { | |
797 | /* We reach here when line info is not available. In this case, | |
798 | we print a message and just exit the loop. The return value | |
799 | is calculated after the loop. */ | |
800 | printf_filtered (_("No line number information available " | |
801 | "for address ")); | |
802 | wrap_here (" "); | |
803 | print_address (gdbarch, loop_start - 1, gdb_stdout); | |
804 | printf_filtered ("\n"); | |
805 | break; | |
806 | } | |
807 | ||
808 | loop_end = loop_start; | |
809 | loop_start = sal.pc; | |
810 | ||
811 | /* This loop pushes instruction addresses in the range from | |
812 | LOOP_START to LOOP_END. */ | |
813 | for (p = loop_start; p < loop_end;) | |
814 | { | |
52d214d3 | 815 | pcs.push_back (p); |
bb556f1f TK |
816 | p += gdb_insn_length (gdbarch, p); |
817 | } | |
818 | ||
52d214d3 TT |
819 | inst_count -= pcs.size (); |
820 | *inst_read += pcs.size (); | |
bb556f1f TK |
821 | } |
822 | while (inst_count > 0); | |
823 | ||
824 | /* After the loop, the vector PCS has instruction addresses of the last | |
825 | source line we processed, and INST_COUNT has a negative value. | |
826 | We return the address at the index of -INST_COUNT in the vector for | |
827 | the reason below. | |
828 | Let's assume the following instruction addresses and run 'x/-4i 0x400e'. | |
829 | Line X of File | |
830 | 0x4000 | |
831 | 0x4001 | |
832 | 0x4005 | |
833 | Line Y of File | |
834 | 0x4009 | |
835 | 0x400c | |
836 | => 0x400e | |
837 | 0x4011 | |
838 | find_instruction_backward is called with INST_COUNT = 4 and expected to | |
839 | return 0x4001. When we reach here, INST_COUNT is set to -1 because | |
840 | it was subtracted by 2 (from Line Y) and 3 (from Line X). The value | |
841 | 4001 is located at the index 1 of the last iterated line (= Line X), | |
842 | which is simply calculated by -INST_COUNT. | |
843 | The case when the length of PCS is 0 means that we reached an area for | |
844 | which line info is not available. In such case, we return LOOP_START, | |
845 | which was the lowest instruction address that had line info. */ | |
52d214d3 | 846 | p = pcs.size () > 0 ? pcs[-inst_count] : loop_start; |
bb556f1f TK |
847 | |
848 | /* INST_READ includes all instruction addresses in a pc range. Need to | |
849 | exclude the beginning part up to the address we're returning. That | |
850 | is, exclude {0x4000} in the example above. */ | |
851 | if (inst_count < 0) | |
852 | *inst_read += inst_count; | |
853 | ||
bb556f1f TK |
854 | return p; |
855 | } | |
856 | ||
857 | /* Backward read LEN bytes of target memory from address MEMADDR + LEN, | |
858 | placing the results in GDB's memory from MYADDR + LEN. Returns | |
859 | a count of the bytes actually read. */ | |
860 | ||
861 | static int | |
862 | read_memory_backward (struct gdbarch *gdbarch, | |
863 | CORE_ADDR memaddr, gdb_byte *myaddr, int len) | |
864 | { | |
865 | int errcode; | |
866 | int nread; /* Number of bytes actually read. */ | |
867 | ||
868 | /* First try a complete read. */ | |
869 | errcode = target_read_memory (memaddr, myaddr, len); | |
870 | if (errcode == 0) | |
871 | { | |
872 | /* Got it all. */ | |
873 | nread = len; | |
874 | } | |
875 | else | |
876 | { | |
877 | /* Loop, reading one byte at a time until we get as much as we can. */ | |
878 | memaddr += len; | |
879 | myaddr += len; | |
880 | for (nread = 0; nread < len; ++nread) | |
881 | { | |
882 | errcode = target_read_memory (--memaddr, --myaddr, 1); | |
883 | if (errcode != 0) | |
884 | { | |
885 | /* The read was unsuccessful, so exit the loop. */ | |
886 | printf_filtered (_("Cannot access memory at address %s\n"), | |
887 | paddress (gdbarch, memaddr)); | |
888 | break; | |
889 | } | |
890 | } | |
891 | } | |
892 | return nread; | |
893 | } | |
894 | ||
895 | /* Returns true if X (which is LEN bytes wide) is the number zero. */ | |
896 | ||
897 | static int | |
898 | integer_is_zero (const gdb_byte *x, int len) | |
899 | { | |
900 | int i = 0; | |
901 | ||
902 | while (i < len && x[i] == 0) | |
903 | ++i; | |
904 | return (i == len); | |
905 | } | |
906 | ||
907 | /* Find the start address of a string in which ADDR is included. | |
908 | Basically we search for '\0' and return the next address, | |
909 | but if OPTIONS->PRINT_MAX is smaller than the length of a string, | |
910 | we stop searching and return the address to print characters as many as | |
911 | PRINT_MAX from the string. */ | |
912 | ||
913 | static CORE_ADDR | |
914 | find_string_backward (struct gdbarch *gdbarch, | |
915 | CORE_ADDR addr, int count, int char_size, | |
916 | const struct value_print_options *options, | |
917 | int *strings_counted) | |
918 | { | |
919 | const int chunk_size = 0x20; | |
bb556f1f TK |
920 | int read_error = 0; |
921 | int chars_read = 0; | |
922 | int chars_to_read = chunk_size; | |
923 | int chars_counted = 0; | |
924 | int count_original = count; | |
925 | CORE_ADDR string_start_addr = addr; | |
926 | ||
927 | gdb_assert (char_size == 1 || char_size == 2 || char_size == 4); | |
26fcd5d7 | 928 | gdb::byte_vector buffer (chars_to_read * char_size); |
bb556f1f TK |
929 | while (count > 0 && read_error == 0) |
930 | { | |
931 | int i; | |
932 | ||
933 | addr -= chars_to_read * char_size; | |
26fcd5d7 | 934 | chars_read = read_memory_backward (gdbarch, addr, buffer.data (), |
bb556f1f TK |
935 | chars_to_read * char_size); |
936 | chars_read /= char_size; | |
937 | read_error = (chars_read == chars_to_read) ? 0 : 1; | |
938 | /* Searching for '\0' from the end of buffer in backward direction. */ | |
939 | for (i = 0; i < chars_read && count > 0 ; ++i, ++chars_counted) | |
940 | { | |
941 | int offset = (chars_to_read - i - 1) * char_size; | |
942 | ||
26fcd5d7 | 943 | if (integer_is_zero (&buffer[offset], char_size) |
bb556f1f TK |
944 | || chars_counted == options->print_max) |
945 | { | |
946 | /* Found '\0' or reached print_max. As OFFSET is the offset to | |
947 | '\0', we add CHAR_SIZE to return the start address of | |
948 | a string. */ | |
949 | --count; | |
950 | string_start_addr = addr + offset + char_size; | |
951 | chars_counted = 0; | |
952 | } | |
953 | } | |
954 | } | |
955 | ||
956 | /* Update STRINGS_COUNTED with the actual number of loaded strings. */ | |
957 | *strings_counted = count_original - count; | |
958 | ||
959 | if (read_error != 0) | |
960 | { | |
961 | /* In error case, STRING_START_ADDR is pointing to the string that | |
962 | was last successfully loaded. Rewind the partially loaded string. */ | |
963 | string_start_addr -= chars_counted * char_size; | |
964 | } | |
965 | ||
bb556f1f TK |
966 | return string_start_addr; |
967 | } | |
968 | ||
c906108c SS |
969 | /* Examine data at address ADDR in format FMT. |
970 | Fetch it from memory and print on gdb_stdout. */ | |
971 | ||
972 | static void | |
5d3729b5 | 973 | do_examine (struct format_data fmt, struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 974 | { |
52f0bd74 AC |
975 | char format = 0; |
976 | char size; | |
977 | int count = 1; | |
c906108c | 978 | struct type *val_type = NULL; |
52f0bd74 AC |
979 | int i; |
980 | int maxelts; | |
79a45b7d | 981 | struct value_print_options opts; |
bb556f1f TK |
982 | int need_to_update_next_address = 0; |
983 | CORE_ADDR addr_rewound = 0; | |
c906108c SS |
984 | |
985 | format = fmt.format; | |
986 | size = fmt.size; | |
987 | count = fmt.count; | |
5d3729b5 | 988 | next_gdbarch = gdbarch; |
c906108c | 989 | next_address = addr; |
c906108c | 990 | |
9a22f0d0 PM |
991 | /* Instruction format implies fetch single bytes |
992 | regardless of the specified size. | |
993 | The case of strings is handled in decode_format, only explicit | |
994 | size operator are not changed to 'b'. */ | |
995 | if (format == 'i') | |
c906108c SS |
996 | size = 'b'; |
997 | ||
5d3729b5 UW |
998 | if (size == 'a') |
999 | { | |
1000 | /* Pick the appropriate size for an address. */ | |
1001 | if (gdbarch_ptr_bit (next_gdbarch) == 64) | |
1002 | size = 'g'; | |
1003 | else if (gdbarch_ptr_bit (next_gdbarch) == 32) | |
1004 | size = 'w'; | |
1005 | else if (gdbarch_ptr_bit (next_gdbarch) == 16) | |
1006 | size = 'h'; | |
1007 | else | |
1008 | /* Bad value for gdbarch_ptr_bit. */ | |
1009 | internal_error (__FILE__, __LINE__, | |
1010 | _("failed internal consistency check")); | |
1011 | } | |
1012 | ||
1013 | if (size == 'b') | |
df4df182 | 1014 | val_type = builtin_type (next_gdbarch)->builtin_int8; |
c906108c | 1015 | else if (size == 'h') |
df4df182 | 1016 | val_type = builtin_type (next_gdbarch)->builtin_int16; |
c906108c | 1017 | else if (size == 'w') |
df4df182 | 1018 | val_type = builtin_type (next_gdbarch)->builtin_int32; |
c906108c | 1019 | else if (size == 'g') |
df4df182 | 1020 | val_type = builtin_type (next_gdbarch)->builtin_int64; |
c906108c | 1021 | |
9a22f0d0 PM |
1022 | if (format == 's') |
1023 | { | |
1024 | struct type *char_type = NULL; | |
ad3bbd48 | 1025 | |
9a22f0d0 PM |
1026 | /* Search for "char16_t" or "char32_t" types or fall back to 8-bit char |
1027 | if type is not found. */ | |
1028 | if (size == 'h') | |
1029 | char_type = builtin_type (next_gdbarch)->builtin_char16; | |
1030 | else if (size == 'w') | |
1031 | char_type = builtin_type (next_gdbarch)->builtin_char32; | |
1032 | if (char_type) | |
1033 | val_type = char_type; | |
1034 | else | |
1035 | { | |
1036 | if (size != '\0' && size != 'b') | |
0df8b418 MS |
1037 | warning (_("Unable to display strings with " |
1038 | "size '%c', using 'b' instead."), size); | |
9a22f0d0 PM |
1039 | size = 'b'; |
1040 | val_type = builtin_type (next_gdbarch)->builtin_int8; | |
1041 | } | |
1042 | } | |
1043 | ||
c906108c SS |
1044 | maxelts = 8; |
1045 | if (size == 'w') | |
1046 | maxelts = 4; | |
1047 | if (size == 'g') | |
1048 | maxelts = 2; | |
1049 | if (format == 's' || format == 'i') | |
1050 | maxelts = 1; | |
1051 | ||
79a45b7d TT |
1052 | get_formatted_print_options (&opts, format); |
1053 | ||
bb556f1f TK |
1054 | if (count < 0) |
1055 | { | |
1056 | /* This is the negative repeat count case. | |
1057 | We rewind the address based on the given repeat count and format, | |
1058 | then examine memory from there in forward direction. */ | |
1059 | ||
1060 | count = -count; | |
1061 | if (format == 'i') | |
1062 | { | |
1063 | next_address = find_instruction_backward (gdbarch, addr, count, | |
1064 | &count); | |
1065 | } | |
1066 | else if (format == 's') | |
1067 | { | |
1068 | next_address = find_string_backward (gdbarch, addr, count, | |
1069 | TYPE_LENGTH (val_type), | |
1070 | &opts, &count); | |
1071 | } | |
1072 | else | |
1073 | { | |
1074 | next_address = addr - count * TYPE_LENGTH (val_type); | |
1075 | } | |
1076 | ||
1077 | /* The following call to print_formatted updates next_address in every | |
1078 | iteration. In backward case, we store the start address here | |
1079 | and update next_address with it before exiting the function. */ | |
1080 | addr_rewound = (format == 's' | |
1081 | ? next_address - TYPE_LENGTH (val_type) | |
1082 | : next_address); | |
1083 | need_to_update_next_address = 1; | |
1084 | } | |
1085 | ||
c906108c SS |
1086 | /* Print as many objects as specified in COUNT, at most maxelts per line, |
1087 | with the address of the next one at the start of each line. */ | |
1088 | ||
1089 | while (count > 0) | |
1090 | { | |
1091 | QUIT; | |
2b28d209 PP |
1092 | if (format == 'i') |
1093 | fputs_filtered (pc_prefix (next_address), gdb_stdout); | |
5af949e3 | 1094 | print_address (next_gdbarch, next_address, gdb_stdout); |
c906108c SS |
1095 | printf_filtered (":"); |
1096 | for (i = maxelts; | |
1097 | i > 0 && count > 0; | |
1098 | i--, count--) | |
1099 | { | |
1100 | printf_filtered ("\t"); | |
1101 | /* Note that print_formatted sets next_address for the next | |
1102 | object. */ | |
1103 | last_examine_address = next_address; | |
1104 | ||
c906108c | 1105 | /* The value to be displayed is not fetched greedily. |
5d51a2db MR |
1106 | Instead, to avoid the possibility of a fetched value not |
1107 | being used, its retrieval is delayed until the print code | |
c5aa993b JM |
1108 | uses it. When examining an instruction stream, the |
1109 | disassembler will perform its own memory fetch using just | |
1110 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
1111 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
1112 | is left with the byte sequence from the last complete | |
0df8b418 | 1113 | instruction fetched from memory? */ |
9b558729 TT |
1114 | last_examine_value |
1115 | = release_value (value_at_lazy (val_type, next_address)); | |
c906108c | 1116 | |
9b558729 | 1117 | print_formatted (last_examine_value.get (), size, &opts, gdb_stdout); |
a4642986 MR |
1118 | |
1119 | /* Display any branch delay slots following the final insn. */ | |
1120 | if (format == 'i' && count == 1) | |
1121 | count += branch_delay_insns; | |
c906108c SS |
1122 | } |
1123 | printf_filtered ("\n"); | |
c906108c | 1124 | } |
bb556f1f TK |
1125 | |
1126 | if (need_to_update_next_address) | |
1127 | next_address = addr_rewound; | |
c906108c SS |
1128 | } |
1129 | \f | |
1130 | static void | |
8d89f51a | 1131 | validate_format (struct format_data fmt, const char *cmdname) |
c906108c SS |
1132 | { |
1133 | if (fmt.size != 0) | |
8a3fe4f8 | 1134 | error (_("Size letters are meaningless in \"%s\" command."), cmdname); |
c906108c | 1135 | if (fmt.count != 1) |
8a3fe4f8 | 1136 | error (_("Item count other than 1 is meaningless in \"%s\" command."), |
c906108c | 1137 | cmdname); |
ea37ba09 | 1138 | if (fmt.format == 'i') |
8a3fe4f8 | 1139 | error (_("Format letter \"%c\" is meaningless in \"%s\" command."), |
c906108c SS |
1140 | fmt.format, cmdname); |
1141 | } | |
1142 | ||
7d8062de | 1143 | /* Parse print command format string into *OPTS and update *EXPP. |
1c88ceb1 JK |
1144 | CMDNAME should name the current command. */ |
1145 | ||
1146 | void | |
1147 | print_command_parse_format (const char **expp, const char *cmdname, | |
7d8062de | 1148 | value_print_options *opts) |
1c88ceb1 JK |
1149 | { |
1150 | const char *exp = *expp; | |
1151 | ||
d8edc8b7 PW |
1152 | /* opts->raw value might already have been set by 'set print raw-values' |
1153 | or by using 'print -raw-values'. | |
1154 | So, do not set opts->raw to 0, only set it to 1 if /r is given. */ | |
1c88ceb1 JK |
1155 | if (exp && *exp == '/') |
1156 | { | |
7d8062de PA |
1157 | format_data fmt; |
1158 | ||
1c88ceb1 | 1159 | exp++; |
7d8062de PA |
1160 | fmt = decode_format (&exp, last_format, 0); |
1161 | validate_format (fmt, cmdname); | |
1162 | last_format = fmt.format; | |
1163 | ||
1164 | opts->format = fmt.format; | |
d8edc8b7 | 1165 | opts->raw = opts->raw || fmt.raw; |
1c88ceb1 JK |
1166 | } |
1167 | else | |
1168 | { | |
7d8062de | 1169 | opts->format = 0; |
1c88ceb1 JK |
1170 | } |
1171 | ||
1172 | *expp = exp; | |
1173 | } | |
1174 | ||
7d8062de | 1175 | /* See valprint.h. */ |
1c88ceb1 JK |
1176 | |
1177 | void | |
7d8062de | 1178 | print_value (value *val, const value_print_options &opts) |
1c88ceb1 | 1179 | { |
1c88ceb1 JK |
1180 | int histindex = record_latest_value (val); |
1181 | ||
1182 | annotate_value_history_begin (histindex, value_type (val)); | |
1183 | ||
1184 | printf_filtered ("$%d = ", histindex); | |
1185 | ||
1186 | annotate_value_history_value (); | |
1187 | ||
7d8062de | 1188 | print_formatted (val, 0, &opts, gdb_stdout); |
1c88ceb1 JK |
1189 | printf_filtered ("\n"); |
1190 | ||
1191 | annotate_value_history_end (); | |
1192 | } | |
1193 | ||
7d8062de | 1194 | /* Implementation of the "print" and "call" commands. */ |
c906108c SS |
1195 | |
1196 | static void | |
7d8062de | 1197 | print_command_1 (const char *args, int voidprint) |
c906108c | 1198 | { |
3d6d86c6 | 1199 | struct value *val; |
7d8062de PA |
1200 | value_print_options print_opts; |
1201 | ||
1202 | get_user_print_options (&print_opts); | |
1203 | /* Override global settings with explicit options, if any. */ | |
1204 | auto group = make_value_print_options_def_group (&print_opts); | |
1205 | gdb::option::process_options | |
1206 | (&args, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group); | |
1207 | ||
1208 | print_command_parse_format (&args, "print", &print_opts); | |
c906108c | 1209 | |
7d8062de | 1210 | const char *exp = args; |
c906108c | 1211 | |
7d8062de | 1212 | if (exp != nullptr && *exp) |
c906108c | 1213 | { |
4d01a485 PA |
1214 | expression_up expr = parse_expression (exp); |
1215 | val = evaluate_expression (expr.get ()); | |
c906108c SS |
1216 | } |
1217 | else | |
1218 | val = access_value_history (0); | |
1219 | ||
df407dfe AC |
1220 | if (voidprint || (val && value_type (val) && |
1221 | TYPE_CODE (value_type (val)) != TYPE_CODE_VOID)) | |
7d8062de PA |
1222 | print_value (val, print_opts); |
1223 | } | |
1224 | ||
1225 | /* See valprint.h. */ | |
1226 | ||
1227 | void | |
1228 | print_command_completer (struct cmd_list_element *ignore, | |
1229 | completion_tracker &tracker, | |
1230 | const char *text, const char * /*word*/) | |
1231 | { | |
1232 | const auto group = make_value_print_options_def_group (nullptr); | |
1233 | if (gdb::option::complete_options | |
1234 | (tracker, &text, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group)) | |
1235 | return; | |
1236 | ||
1237 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
1238 | expression_completer (ignore, tracker, text, word); | |
c906108c SS |
1239 | } |
1240 | ||
c906108c | 1241 | static void |
0b39b52e | 1242 | print_command (const char *exp, int from_tty) |
c906108c | 1243 | { |
e93a8774 | 1244 | print_command_1 (exp, 1); |
c906108c SS |
1245 | } |
1246 | ||
675dcf4f | 1247 | /* Same as print, except it doesn't print void results. */ |
c906108c | 1248 | static void |
0b39b52e | 1249 | call_command (const char *exp, int from_tty) |
c906108c | 1250 | { |
e93a8774 | 1251 | print_command_1 (exp, 0); |
c906108c SS |
1252 | } |
1253 | ||
6f937416 PA |
1254 | /* Implementation of the "output" command. */ |
1255 | ||
6f937416 | 1256 | void |
122b53ea | 1257 | output_command (const char *exp, int from_tty) |
c906108c | 1258 | { |
52f0bd74 | 1259 | char format = 0; |
3d6d86c6 | 1260 | struct value *val; |
c906108c | 1261 | struct format_data fmt; |
79a45b7d | 1262 | struct value_print_options opts; |
c906108c | 1263 | |
777ea8f1 | 1264 | fmt.size = 0; |
a6bac58e | 1265 | fmt.raw = 0; |
777ea8f1 | 1266 | |
c906108c SS |
1267 | if (exp && *exp == '/') |
1268 | { | |
1269 | exp++; | |
1270 | fmt = decode_format (&exp, 0, 0); | |
1271 | validate_format (fmt, "output"); | |
1272 | format = fmt.format; | |
1273 | } | |
1274 | ||
4d01a485 | 1275 | expression_up expr = parse_expression (exp); |
c906108c | 1276 | |
4d01a485 | 1277 | val = evaluate_expression (expr.get ()); |
c906108c | 1278 | |
df407dfe | 1279 | annotate_value_begin (value_type (val)); |
c906108c | 1280 | |
79a45b7d | 1281 | get_formatted_print_options (&opts, format); |
a6bac58e | 1282 | opts.raw = fmt.raw; |
79a45b7d | 1283 | print_formatted (val, fmt.size, &opts, gdb_stdout); |
c906108c SS |
1284 | |
1285 | annotate_value_end (); | |
1286 | ||
2acceee2 JM |
1287 | wrap_here (""); |
1288 | gdb_flush (gdb_stdout); | |
c906108c SS |
1289 | } |
1290 | ||
c906108c | 1291 | static void |
981a3fb3 | 1292 | set_command (const char *exp, int from_tty) |
c906108c | 1293 | { |
4d01a485 | 1294 | expression_up expr = parse_expression (exp); |
ad3bbd48 | 1295 | |
0ece64fd TG |
1296 | if (expr->nelts >= 1) |
1297 | switch (expr->elts[0].opcode) | |
1298 | { | |
1299 | case UNOP_PREINCREMENT: | |
1300 | case UNOP_POSTINCREMENT: | |
1301 | case UNOP_PREDECREMENT: | |
1302 | case UNOP_POSTDECREMENT: | |
1303 | case BINOP_ASSIGN: | |
1304 | case BINOP_ASSIGN_MODIFY: | |
1305 | case BINOP_COMMA: | |
1306 | break; | |
1307 | default: | |
1308 | warning | |
1309 | (_("Expression is not an assignment (and might have no effect)")); | |
1310 | } | |
52b3699b | 1311 | |
4d01a485 | 1312 | evaluate_expression (expr.get ()); |
c906108c SS |
1313 | } |
1314 | ||
c906108c | 1315 | static void |
1d12d88f | 1316 | info_symbol_command (const char *arg, int from_tty) |
c906108c SS |
1317 | { |
1318 | struct minimal_symbol *msymbol; | |
c5aa993b | 1319 | struct obj_section *osect; |
c5aa993b JM |
1320 | CORE_ADDR addr, sect_addr; |
1321 | int matches = 0; | |
1322 | unsigned int offset; | |
c906108c SS |
1323 | |
1324 | if (!arg) | |
e2e0b3e5 | 1325 | error_no_arg (_("address")); |
c906108c SS |
1326 | |
1327 | addr = parse_and_eval_address (arg); | |
2030c079 | 1328 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 | 1329 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
c5aa993b | 1330 | { |
3b9d3ac2 TT |
1331 | /* Only process each object file once, even if there's a separate |
1332 | debug file. */ | |
1333 | if (objfile->separate_debug_objfile_backlink) | |
1334 | continue; | |
1335 | ||
1336 | sect_addr = overlay_mapped_address (addr, osect); | |
1337 | ||
1338 | if (obj_section_addr (osect) <= sect_addr | |
1339 | && sect_addr < obj_section_endaddr (osect) | |
1340 | && (msymbol | |
1341 | = lookup_minimal_symbol_by_pc_section (sect_addr, | |
1342 | osect).minsym)) | |
5178ed48 | 1343 | { |
3b9d3ac2 TT |
1344 | const char *obj_name, *mapped, *sec_name, *msym_name; |
1345 | const char *loc_string; | |
1346 | ||
1347 | matches = 1; | |
1348 | offset = sect_addr - MSYMBOL_VALUE_ADDRESS (objfile, msymbol); | |
1349 | mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped"); | |
1350 | sec_name = osect->the_bfd_section->name; | |
c9d95fa3 | 1351 | msym_name = msymbol->print_name (); |
3b9d3ac2 TT |
1352 | |
1353 | /* Don't print the offset if it is zero. | |
1354 | We assume there's no need to handle i18n of "sym + offset". */ | |
1355 | std::string string_holder; | |
1356 | if (offset) | |
1357 | { | |
1358 | string_holder = string_printf ("%s + %u", msym_name, offset); | |
1359 | loc_string = string_holder.c_str (); | |
1360 | } | |
c14c28ba | 1361 | else |
3b9d3ac2 TT |
1362 | loc_string = msym_name; |
1363 | ||
1364 | gdb_assert (osect->objfile && objfile_name (osect->objfile)); | |
1365 | obj_name = objfile_name (osect->objfile); | |
1366 | ||
deeafabb | 1367 | if (current_program_space->multi_objfile_p ()) |
3b9d3ac2 TT |
1368 | if (pc_in_unmapped_range (addr, osect)) |
1369 | if (section_is_overlay (osect)) | |
1370 | printf_filtered (_("%s in load address range of " | |
1371 | "%s overlay section %s of %s\n"), | |
1372 | loc_string, mapped, sec_name, obj_name); | |
1373 | else | |
1374 | printf_filtered (_("%s in load address range of " | |
1375 | "section %s of %s\n"), | |
1376 | loc_string, sec_name, obj_name); | |
1377 | else | |
1378 | if (section_is_overlay (osect)) | |
1379 | printf_filtered (_("%s in %s overlay section %s of %s\n"), | |
1380 | loc_string, mapped, sec_name, obj_name); | |
1381 | else | |
1382 | printf_filtered (_("%s in section %s of %s\n"), | |
1383 | loc_string, sec_name, obj_name); | |
c14c28ba | 1384 | else |
3b9d3ac2 TT |
1385 | if (pc_in_unmapped_range (addr, osect)) |
1386 | if (section_is_overlay (osect)) | |
1387 | printf_filtered (_("%s in load address range of %s overlay " | |
1388 | "section %s\n"), | |
1389 | loc_string, mapped, sec_name); | |
1390 | else | |
1391 | printf_filtered | |
1392 | (_("%s in load address range of section %s\n"), | |
1393 | loc_string, sec_name); | |
1394 | else | |
1395 | if (section_is_overlay (osect)) | |
1396 | printf_filtered (_("%s in %s overlay section %s\n"), | |
1397 | loc_string, mapped, sec_name); | |
1398 | else | |
1399 | printf_filtered (_("%s in section %s\n"), | |
1400 | loc_string, sec_name); | |
1401 | } | |
c5aa993b | 1402 | } |
c906108c | 1403 | if (matches == 0) |
a3f17187 | 1404 | printf_filtered (_("No symbol matches %s.\n"), arg); |
c906108c SS |
1405 | } |
1406 | ||
c906108c | 1407 | static void |
1d12d88f | 1408 | info_address_command (const char *exp, int from_tty) |
c906108c | 1409 | { |
768a979c UW |
1410 | struct gdbarch *gdbarch; |
1411 | int regno; | |
52f0bd74 | 1412 | struct symbol *sym; |
7c7b6655 | 1413 | struct bound_minimal_symbol msymbol; |
52f0bd74 | 1414 | long val; |
714835d5 | 1415 | struct obj_section *section; |
08922a10 | 1416 | CORE_ADDR load_addr, context_pc = 0; |
1993b719 | 1417 | struct field_of_this_result is_a_field_of_this; |
c906108c SS |
1418 | |
1419 | if (exp == 0) | |
8a3fe4f8 | 1420 | error (_("Argument required.")); |
c906108c | 1421 | |
08922a10 | 1422 | sym = lookup_symbol (exp, get_selected_block (&context_pc), VAR_DOMAIN, |
d12307c1 | 1423 | &is_a_field_of_this).symbol; |
c906108c SS |
1424 | if (sym == NULL) |
1425 | { | |
1993b719 | 1426 | if (is_a_field_of_this.type != NULL) |
c906108c SS |
1427 | { |
1428 | printf_filtered ("Symbol \""); | |
1429 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1430 | current_language->la_language, DMGL_ANSI); | |
e2b23ee9 AF |
1431 | printf_filtered ("\" is a field of the local class variable "); |
1432 | if (current_language->la_language == language_objc) | |
2625d86c | 1433 | printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */ |
e2b23ee9 | 1434 | else |
2625d86c | 1435 | printf_filtered ("`this'\n"); |
c906108c SS |
1436 | return; |
1437 | } | |
1438 | ||
7c7b6655 | 1439 | msymbol = lookup_bound_minimal_symbol (exp); |
c906108c | 1440 | |
7c7b6655 | 1441 | if (msymbol.minsym != NULL) |
c906108c | 1442 | { |
7c7b6655 | 1443 | struct objfile *objfile = msymbol.objfile; |
e27d198c | 1444 | |
08feed99 | 1445 | gdbarch = objfile->arch (); |
77e371c0 | 1446 | load_addr = BMSYMBOL_VALUE_ADDRESS (msymbol); |
c906108c SS |
1447 | |
1448 | printf_filtered ("Symbol \""); | |
1449 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1450 | current_language->la_language, DMGL_ANSI); | |
1451 | printf_filtered ("\" is at "); | |
35fb8261 TT |
1452 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1453 | gdb_stdout); | |
c906108c | 1454 | printf_filtered (" in a file compiled without debugging"); |
efd66ac6 | 1455 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
c906108c SS |
1456 | if (section_is_overlay (section)) |
1457 | { | |
1458 | load_addr = overlay_unmapped_address (load_addr, section); | |
1459 | printf_filtered (",\n -- loaded at "); | |
35fb8261 TT |
1460 | fputs_styled (paddress (gdbarch, load_addr), |
1461 | address_style.style (), | |
1462 | gdb_stdout); | |
714835d5 UW |
1463 | printf_filtered (" in overlay section %s", |
1464 | section->the_bfd_section->name); | |
c906108c SS |
1465 | } |
1466 | printf_filtered (".\n"); | |
1467 | } | |
1468 | else | |
8a3fe4f8 | 1469 | error (_("No symbol \"%s\" in current context."), exp); |
c906108c SS |
1470 | return; |
1471 | } | |
1472 | ||
1473 | printf_filtered ("Symbol \""); | |
987012b8 | 1474 | fprintf_symbol_filtered (gdb_stdout, sym->print_name (), |
c906108c SS |
1475 | current_language->la_language, DMGL_ANSI); |
1476 | printf_filtered ("\" is "); | |
c5aa993b | 1477 | val = SYMBOL_VALUE (sym); |
1994afbf DE |
1478 | if (SYMBOL_OBJFILE_OWNED (sym)) |
1479 | section = SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym); | |
1480 | else | |
1481 | section = NULL; | |
08be3fe3 | 1482 | gdbarch = symbol_arch (sym); |
c906108c | 1483 | |
24d6c2a0 TT |
1484 | if (SYMBOL_COMPUTED_OPS (sym) != NULL) |
1485 | { | |
1486 | SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, context_pc, | |
1487 | gdb_stdout); | |
1488 | printf_filtered (".\n"); | |
1489 | return; | |
1490 | } | |
1491 | ||
c906108c SS |
1492 | switch (SYMBOL_CLASS (sym)) |
1493 | { | |
1494 | case LOC_CONST: | |
1495 | case LOC_CONST_BYTES: | |
1496 | printf_filtered ("constant"); | |
1497 | break; | |
1498 | ||
1499 | case LOC_LABEL: | |
1500 | printf_filtered ("a label at address "); | |
5af949e3 | 1501 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
35fb8261 TT |
1502 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1503 | gdb_stdout); | |
c906108c SS |
1504 | if (section_is_overlay (section)) |
1505 | { | |
1506 | load_addr = overlay_unmapped_address (load_addr, section); | |
1507 | printf_filtered (",\n -- loaded at "); | |
35fb8261 TT |
1508 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1509 | gdb_stdout); | |
714835d5 UW |
1510 | printf_filtered (" in overlay section %s", |
1511 | section->the_bfd_section->name); | |
c906108c SS |
1512 | } |
1513 | break; | |
1514 | ||
4c2df51b | 1515 | case LOC_COMPUTED: |
24d6c2a0 | 1516 | gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method")); |
4c2df51b | 1517 | |
c906108c | 1518 | case LOC_REGISTER: |
768a979c UW |
1519 | /* GDBARCH is the architecture associated with the objfile the symbol |
1520 | is defined in; the target architecture may be different, and may | |
1521 | provide additional registers. However, we do not know the target | |
1522 | architecture at this point. We assume the objfile architecture | |
1523 | will contain all the standard registers that occur in debug info | |
1524 | in that objfile. */ | |
1525 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
1526 | ||
2a2d4dc3 AS |
1527 | if (SYMBOL_IS_ARGUMENT (sym)) |
1528 | printf_filtered (_("an argument in register %s"), | |
768a979c | 1529 | gdbarch_register_name (gdbarch, regno)); |
2a2d4dc3 AS |
1530 | else |
1531 | printf_filtered (_("a variable in register %s"), | |
768a979c | 1532 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1533 | break; |
1534 | ||
1535 | case LOC_STATIC: | |
a3f17187 | 1536 | printf_filtered (_("static storage at address ")); |
5af949e3 | 1537 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
35fb8261 TT |
1538 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1539 | gdb_stdout); | |
c906108c SS |
1540 | if (section_is_overlay (section)) |
1541 | { | |
1542 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1543 | printf_filtered (_(",\n -- loaded at ")); |
35fb8261 TT |
1544 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1545 | gdb_stdout); | |
714835d5 UW |
1546 | printf_filtered (_(" in overlay section %s"), |
1547 | section->the_bfd_section->name); | |
c906108c SS |
1548 | } |
1549 | break; | |
1550 | ||
c906108c | 1551 | case LOC_REGPARM_ADDR: |
768a979c UW |
1552 | /* Note comment at LOC_REGISTER. */ |
1553 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
675dcf4f | 1554 | printf_filtered (_("address of an argument in register %s"), |
768a979c | 1555 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1556 | break; |
1557 | ||
1558 | case LOC_ARG: | |
a3f17187 | 1559 | printf_filtered (_("an argument at offset %ld"), val); |
c906108c SS |
1560 | break; |
1561 | ||
c906108c | 1562 | case LOC_LOCAL: |
a3f17187 | 1563 | printf_filtered (_("a local variable at frame offset %ld"), val); |
c906108c SS |
1564 | break; |
1565 | ||
1566 | case LOC_REF_ARG: | |
a3f17187 | 1567 | printf_filtered (_("a reference argument at offset %ld"), val); |
c906108c SS |
1568 | break; |
1569 | ||
c906108c | 1570 | case LOC_TYPEDEF: |
a3f17187 | 1571 | printf_filtered (_("a typedef")); |
c906108c SS |
1572 | break; |
1573 | ||
1574 | case LOC_BLOCK: | |
a3f17187 | 1575 | printf_filtered (_("a function at address ")); |
2b1ffcfd | 1576 | load_addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
35fb8261 TT |
1577 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1578 | gdb_stdout); | |
c906108c SS |
1579 | if (section_is_overlay (section)) |
1580 | { | |
1581 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1582 | printf_filtered (_(",\n -- loaded at ")); |
35fb8261 TT |
1583 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1584 | gdb_stdout); | |
714835d5 UW |
1585 | printf_filtered (_(" in overlay section %s"), |
1586 | section->the_bfd_section->name); | |
c906108c SS |
1587 | } |
1588 | break; | |
1589 | ||
1590 | case LOC_UNRESOLVED: | |
1591 | { | |
e27d198c | 1592 | struct bound_minimal_symbol msym; |
c906108c | 1593 | |
987012b8 | 1594 | msym = lookup_bound_minimal_symbol (sym->linkage_name ()); |
e27d198c | 1595 | if (msym.minsym == NULL) |
c906108c SS |
1596 | printf_filtered ("unresolved"); |
1597 | else | |
1598 | { | |
efd66ac6 | 1599 | section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
e0740f77 JK |
1600 | |
1601 | if (section | |
1602 | && (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0) | |
5382cfab PW |
1603 | { |
1604 | load_addr = MSYMBOL_VALUE_RAW_ADDRESS (msym.minsym); | |
1605 | printf_filtered (_("a thread-local variable at offset %s " | |
1606 | "in the thread-local storage for `%s'"), | |
1607 | paddress (gdbarch, load_addr), | |
1608 | objfile_name (section->objfile)); | |
1609 | } | |
e0740f77 | 1610 | else |
c906108c | 1611 | { |
5382cfab | 1612 | load_addr = BMSYMBOL_VALUE_ADDRESS (msym); |
e0740f77 | 1613 | printf_filtered (_("static storage at address ")); |
35fb8261 TT |
1614 | fputs_styled (paddress (gdbarch, load_addr), |
1615 | address_style.style (), gdb_stdout); | |
e0740f77 JK |
1616 | if (section_is_overlay (section)) |
1617 | { | |
1618 | load_addr = overlay_unmapped_address (load_addr, section); | |
1619 | printf_filtered (_(",\n -- loaded at ")); | |
35fb8261 TT |
1620 | fputs_styled (paddress (gdbarch, load_addr), |
1621 | address_style.style (), | |
1622 | gdb_stdout); | |
e0740f77 JK |
1623 | printf_filtered (_(" in overlay section %s"), |
1624 | section->the_bfd_section->name); | |
1625 | } | |
c906108c SS |
1626 | } |
1627 | } | |
1628 | } | |
1629 | break; | |
1630 | ||
c906108c | 1631 | case LOC_OPTIMIZED_OUT: |
a3f17187 | 1632 | printf_filtered (_("optimized out")); |
c906108c | 1633 | break; |
c5aa993b | 1634 | |
c906108c | 1635 | default: |
a3f17187 | 1636 | printf_filtered (_("of unknown (botched) type")); |
c906108c SS |
1637 | break; |
1638 | } | |
1639 | printf_filtered (".\n"); | |
1640 | } | |
1641 | \f | |
675dcf4f MK |
1642 | |
1643 | static void | |
0b39b52e | 1644 | x_command (const char *exp, int from_tty) |
c906108c | 1645 | { |
c906108c | 1646 | struct format_data fmt; |
c906108c SS |
1647 | struct value *val; |
1648 | ||
a6bac58e | 1649 | fmt.format = last_format ? last_format : 'x'; |
c906108c SS |
1650 | fmt.size = last_size; |
1651 | fmt.count = 1; | |
a6bac58e | 1652 | fmt.raw = 0; |
c906108c | 1653 | |
9be2ae8f TT |
1654 | /* If there is no expression and no format, use the most recent |
1655 | count. */ | |
1656 | if (exp == nullptr && last_count > 0) | |
1657 | fmt.count = last_count; | |
1658 | ||
c906108c SS |
1659 | if (exp && *exp == '/') |
1660 | { | |
6f937416 PA |
1661 | const char *tmp = exp + 1; |
1662 | ||
1663 | fmt = decode_format (&tmp, last_format, last_size); | |
1664 | exp = (char *) tmp; | |
c906108c SS |
1665 | } |
1666 | ||
9be2ae8f TT |
1667 | last_count = fmt.count; |
1668 | ||
c906108c SS |
1669 | /* If we have an expression, evaluate it and use it as the address. */ |
1670 | ||
1671 | if (exp != 0 && *exp != 0) | |
1672 | { | |
4d01a485 | 1673 | expression_up expr = parse_expression (exp); |
675dcf4f MK |
1674 | /* Cause expression not to be there any more if this command is |
1675 | repeated with Newline. But don't clobber a user-defined | |
1676 | command's definition. */ | |
c906108c | 1677 | if (from_tty) |
85c4be7c | 1678 | set_repeat_arguments (""); |
4d01a485 | 1679 | val = evaluate_expression (expr.get ()); |
aa006118 | 1680 | if (TYPE_IS_REFERENCE (value_type (val))) |
e1c34c5d | 1681 | val = coerce_ref (val); |
c906108c | 1682 | /* In rvalue contexts, such as this, functions are coerced into |
c5aa993b | 1683 | pointers to functions. This makes "x/i main" work. */ |
c0d8fd9a | 1684 | if (/* last_format == 'i' && */ |
df407dfe | 1685 | TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC |
c5aa993b | 1686 | && VALUE_LVAL (val) == lval_memory) |
42ae5230 | 1687 | next_address = value_address (val); |
c906108c | 1688 | else |
1aa20aa8 | 1689 | next_address = value_as_address (val); |
5d3729b5 UW |
1690 | |
1691 | next_gdbarch = expr->gdbarch; | |
c906108c SS |
1692 | } |
1693 | ||
5d3729b5 UW |
1694 | if (!next_gdbarch) |
1695 | error_no_arg (_("starting display address")); | |
1696 | ||
1697 | do_examine (fmt, next_gdbarch, next_address); | |
c906108c | 1698 | |
675dcf4f | 1699 | /* If the examine succeeds, we remember its size and format for next |
9a22f0d0 PM |
1700 | time. Set last_size to 'b' for strings. */ |
1701 | if (fmt.format == 's') | |
1702 | last_size = 'b'; | |
1703 | else | |
1704 | last_size = fmt.size; | |
c906108c SS |
1705 | last_format = fmt.format; |
1706 | ||
0df8b418 | 1707 | /* Set a couple of internal variables if appropriate. */ |
9b558729 | 1708 | if (last_examine_value != nullptr) |
c906108c SS |
1709 | { |
1710 | /* Make last address examined available to the user as $_. Use | |
c5aa993b | 1711 | the correct pointer type. */ |
4478b372 | 1712 | struct type *pointer_type |
9b558729 | 1713 | = lookup_pointer_type (value_type (last_examine_value.get ())); |
c906108c | 1714 | set_internalvar (lookup_internalvar ("_"), |
4478b372 JB |
1715 | value_from_pointer (pointer_type, |
1716 | last_examine_address)); | |
c5aa993b | 1717 | |
675dcf4f MK |
1718 | /* Make contents of last address examined available to the user |
1719 | as $__. If the last value has not been fetched from memory | |
1720 | then don't fetch it now; instead mark it by voiding the $__ | |
1721 | variable. */ | |
9b558729 | 1722 | if (value_lazy (last_examine_value.get ())) |
4fa62494 | 1723 | clear_internalvar (lookup_internalvar ("__")); |
c906108c | 1724 | else |
9b558729 | 1725 | set_internalvar (lookup_internalvar ("__"), last_examine_value.get ()); |
c906108c SS |
1726 | } |
1727 | } | |
c906108c | 1728 | \f |
c5aa993b | 1729 | |
c906108c SS |
1730 | /* Add an expression to the auto-display chain. |
1731 | Specify the expression. */ | |
1732 | ||
1733 | static void | |
0b39b52e | 1734 | display_command (const char *arg, int from_tty) |
c906108c SS |
1735 | { |
1736 | struct format_data fmt; | |
fe978cb0 | 1737 | struct display *newobj; |
6f937416 | 1738 | const char *exp = arg; |
c906108c | 1739 | |
7bd0be3a | 1740 | if (exp == 0) |
c906108c | 1741 | { |
7bd0be3a AB |
1742 | do_displays (); |
1743 | return; | |
1744 | } | |
c906108c | 1745 | |
7bd0be3a AB |
1746 | if (*exp == '/') |
1747 | { | |
1748 | exp++; | |
1749 | fmt = decode_format (&exp, 0, 0); | |
1750 | if (fmt.size && fmt.format == 0) | |
1751 | fmt.format = 'x'; | |
1752 | if (fmt.format == 'i' || fmt.format == 's') | |
1753 | fmt.size = 'b'; | |
1754 | } | |
1755 | else | |
1756 | { | |
1757 | fmt.format = 0; | |
1758 | fmt.size = 0; | |
1759 | fmt.count = 0; | |
1760 | fmt.raw = 0; | |
1761 | } | |
c906108c | 1762 | |
699bd4cf TT |
1763 | innermost_block_tracker tracker; |
1764 | expression_up expr = parse_expression (exp, &tracker); | |
c906108c | 1765 | |
4d01a485 | 1766 | newobj = new display (); |
c906108c | 1767 | |
7bd0be3a | 1768 | newobj->exp_string = xstrdup (exp); |
b22e99fd | 1769 | newobj->exp = std::move (expr); |
699bd4cf | 1770 | newobj->block = tracker.block (); |
7bd0be3a | 1771 | newobj->pspace = current_program_space; |
7bd0be3a AB |
1772 | newobj->number = ++display_number; |
1773 | newobj->format = fmt; | |
1774 | newobj->enabled_p = 1; | |
62147a22 PA |
1775 | newobj->next = NULL; |
1776 | ||
1777 | if (display_chain == NULL) | |
1778 | display_chain = newobj; | |
1779 | else | |
1780 | { | |
1781 | struct display *last; | |
1782 | ||
1783 | for (last = display_chain; last->next != NULL; last = last->next) | |
1784 | ; | |
1785 | last->next = newobj; | |
1786 | } | |
c906108c | 1787 | |
7bd0be3a AB |
1788 | if (from_tty) |
1789 | do_one_display (newobj); | |
c906108c | 1790 | |
7bd0be3a | 1791 | dont_repeat (); |
c906108c SS |
1792 | } |
1793 | ||
1794 | static void | |
fba45db2 | 1795 | free_display (struct display *d) |
c906108c | 1796 | { |
fa8a61dc | 1797 | xfree (d->exp_string); |
4d01a485 | 1798 | delete d; |
c906108c SS |
1799 | } |
1800 | ||
675dcf4f MK |
1801 | /* Clear out the display_chain. Done when new symtabs are loaded, |
1802 | since this invalidates the types stored in many expressions. */ | |
c906108c SS |
1803 | |
1804 | void | |
fba45db2 | 1805 | clear_displays (void) |
c906108c | 1806 | { |
52f0bd74 | 1807 | struct display *d; |
c906108c SS |
1808 | |
1809 | while ((d = display_chain) != NULL) | |
1810 | { | |
c906108c | 1811 | display_chain = d->next; |
fa8a61dc | 1812 | free_display (d); |
c906108c SS |
1813 | } |
1814 | } | |
1815 | ||
3c3fe74c | 1816 | /* Delete the auto-display DISPLAY. */ |
c906108c SS |
1817 | |
1818 | static void | |
3c3fe74c | 1819 | delete_display (struct display *display) |
c906108c | 1820 | { |
3c3fe74c | 1821 | struct display *d; |
c906108c | 1822 | |
3c3fe74c | 1823 | gdb_assert (display != NULL); |
c906108c | 1824 | |
3c3fe74c PA |
1825 | if (display_chain == display) |
1826 | display_chain = display->next; | |
1827 | ||
1828 | ALL_DISPLAYS (d) | |
1829 | if (d->next == display) | |
c906108c | 1830 | { |
3c3fe74c PA |
1831 | d->next = display->next; |
1832 | break; | |
c906108c | 1833 | } |
3c3fe74c PA |
1834 | |
1835 | free_display (display); | |
c906108c SS |
1836 | } |
1837 | ||
c9174737 PA |
1838 | /* Call FUNCTION on each of the displays whose numbers are given in |
1839 | ARGS. DATA is passed unmodified to FUNCTION. */ | |
c906108c SS |
1840 | |
1841 | static void | |
77763700 | 1842 | map_display_numbers (const char *args, |
c9174737 PA |
1843 | void (*function) (struct display *, |
1844 | void *), | |
1845 | void *data) | |
c906108c | 1846 | { |
c9174737 | 1847 | int num; |
c906108c | 1848 | |
c9174737 PA |
1849 | if (args == NULL) |
1850 | error_no_arg (_("one or more display numbers")); | |
c906108c | 1851 | |
bfd28288 | 1852 | number_or_range_parser parser (args); |
c9174737 | 1853 | |
bfd28288 | 1854 | while (!parser.finished ()) |
c906108c | 1855 | { |
bfd28288 | 1856 | const char *p = parser.cur_tok (); |
c906108c | 1857 | |
bfd28288 | 1858 | num = parser.get_number (); |
3c3fe74c PA |
1859 | if (num == 0) |
1860 | warning (_("bad display number at or near '%s'"), p); | |
1861 | else | |
1862 | { | |
c9174737 | 1863 | struct display *d, *tmp; |
c906108c | 1864 | |
c9174737 | 1865 | ALL_DISPLAYS_SAFE (d, tmp) |
3c3fe74c PA |
1866 | if (d->number == num) |
1867 | break; | |
1868 | if (d == NULL) | |
1869 | printf_unfiltered (_("No display number %d.\n"), num); | |
1870 | else | |
c9174737 | 1871 | function (d, data); |
3c3fe74c | 1872 | } |
c906108c | 1873 | } |
c9174737 PA |
1874 | } |
1875 | ||
1876 | /* Callback for map_display_numbers, that deletes a display. */ | |
1877 | ||
1878 | static void | |
1879 | do_delete_display (struct display *d, void *data) | |
1880 | { | |
1881 | delete_display (d); | |
1882 | } | |
1883 | ||
1884 | /* "undisplay" command. */ | |
1885 | ||
1886 | static void | |
77763700 | 1887 | undisplay_command (const char *args, int from_tty) |
c9174737 | 1888 | { |
c9174737 PA |
1889 | if (args == NULL) |
1890 | { | |
1891 | if (query (_("Delete all auto-display expressions? "))) | |
1892 | clear_displays (); | |
1893 | dont_repeat (); | |
1894 | return; | |
1895 | } | |
1896 | ||
1897 | map_display_numbers (args, do_delete_display, NULL); | |
c906108c SS |
1898 | dont_repeat (); |
1899 | } | |
1900 | ||
1901 | /* Display a single auto-display. | |
1902 | Do nothing if the display cannot be printed in the current context, | |
0df8b418 | 1903 | or if the display is disabled. */ |
c906108c SS |
1904 | |
1905 | static void | |
fba45db2 | 1906 | do_one_display (struct display *d) |
c906108c SS |
1907 | { |
1908 | int within_current_scope; | |
1909 | ||
b5de0fa7 | 1910 | if (d->enabled_p == 0) |
c906108c SS |
1911 | return; |
1912 | ||
704e9165 UW |
1913 | /* The expression carries the architecture that was used at parse time. |
1914 | This is a problem if the expression depends on architecture features | |
1915 | (e.g. register numbers), and the current architecture is now different. | |
1916 | For example, a display statement like "display/i $pc" is expected to | |
1917 | display the PC register of the current architecture, not the arch at | |
1918 | the time the display command was given. Therefore, we re-parse the | |
1919 | expression if the current architecture has changed. */ | |
1920 | if (d->exp != NULL && d->exp->gdbarch != get_current_arch ()) | |
1921 | { | |
4d01a485 | 1922 | d->exp.reset (); |
704e9165 UW |
1923 | d->block = NULL; |
1924 | } | |
1925 | ||
a3247a22 PP |
1926 | if (d->exp == NULL) |
1927 | { | |
ad3bbd48 | 1928 | |
a70b8144 | 1929 | try |
a3247a22 | 1930 | { |
699bd4cf TT |
1931 | innermost_block_tracker tracker; |
1932 | d->exp = parse_expression (d->exp_string, &tracker); | |
1933 | d->block = tracker.block (); | |
a3247a22 | 1934 | } |
230d2906 | 1935 | catch (const gdb_exception &ex) |
a3247a22 PP |
1936 | { |
1937 | /* Can't re-parse the expression. Disable this display item. */ | |
1938 | d->enabled_p = 0; | |
1939 | warning (_("Unable to display \"%s\": %s"), | |
3d6e9d23 | 1940 | d->exp_string, ex.what ()); |
a3247a22 PP |
1941 | return; |
1942 | } | |
1943 | } | |
1944 | ||
c906108c | 1945 | if (d->block) |
6c95b8df PA |
1946 | { |
1947 | if (d->pspace == current_program_space) | |
f21c2bd7 TT |
1948 | within_current_scope = contained_in (get_selected_block (0), d->block, |
1949 | true); | |
6c95b8df PA |
1950 | else |
1951 | within_current_scope = 0; | |
1952 | } | |
c906108c SS |
1953 | else |
1954 | within_current_scope = 1; | |
1955 | if (!within_current_scope) | |
1956 | return; | |
1957 | ||
b7b633e9 TT |
1958 | scoped_restore save_display_number |
1959 | = make_scoped_restore (¤t_display_number, d->number); | |
c906108c SS |
1960 | |
1961 | annotate_display_begin (); | |
1962 | printf_filtered ("%d", d->number); | |
1963 | annotate_display_number_end (); | |
1964 | printf_filtered (": "); | |
1965 | if (d->format.size) | |
1966 | { | |
c906108c SS |
1967 | |
1968 | annotate_display_format (); | |
1969 | ||
1970 | printf_filtered ("x/"); | |
1971 | if (d->format.count != 1) | |
1972 | printf_filtered ("%d", d->format.count); | |
1973 | printf_filtered ("%c", d->format.format); | |
1974 | if (d->format.format != 'i' && d->format.format != 's') | |
1975 | printf_filtered ("%c", d->format.size); | |
1976 | printf_filtered (" "); | |
1977 | ||
1978 | annotate_display_expression (); | |
1979 | ||
fa8a61dc | 1980 | puts_filtered (d->exp_string); |
c906108c SS |
1981 | annotate_display_expression_end (); |
1982 | ||
6a2eb474 | 1983 | if (d->format.count != 1 || d->format.format == 'i') |
c906108c SS |
1984 | printf_filtered ("\n"); |
1985 | else | |
1986 | printf_filtered (" "); | |
c5aa993b | 1987 | |
c906108c SS |
1988 | annotate_display_value (); |
1989 | ||
a70b8144 | 1990 | try |
9d8fa392 PA |
1991 | { |
1992 | struct value *val; | |
1993 | CORE_ADDR addr; | |
1994 | ||
4d01a485 | 1995 | val = evaluate_expression (d->exp.get ()); |
9d8fa392 PA |
1996 | addr = value_as_address (val); |
1997 | if (d->format.format == 'i') | |
1998 | addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr); | |
1999 | do_examine (d->format, d->exp->gdbarch, addr); | |
2000 | } | |
230d2906 | 2001 | catch (const gdb_exception_error &ex) |
492d29ea | 2002 | { |
7f6aba03 TT |
2003 | fprintf_filtered (gdb_stdout, _("%p[<error: %s>%p]\n"), |
2004 | metadata_style.style ().ptr (), ex.what (), | |
2005 | nullptr); | |
492d29ea | 2006 | } |
c906108c SS |
2007 | } |
2008 | else | |
2009 | { | |
79a45b7d TT |
2010 | struct value_print_options opts; |
2011 | ||
c906108c SS |
2012 | annotate_display_format (); |
2013 | ||
2014 | if (d->format.format) | |
2015 | printf_filtered ("/%c ", d->format.format); | |
2016 | ||
2017 | annotate_display_expression (); | |
2018 | ||
fa8a61dc | 2019 | puts_filtered (d->exp_string); |
c906108c SS |
2020 | annotate_display_expression_end (); |
2021 | ||
2022 | printf_filtered (" = "); | |
2023 | ||
2024 | annotate_display_expression (); | |
2025 | ||
79a45b7d | 2026 | get_formatted_print_options (&opts, d->format.format); |
a6bac58e | 2027 | opts.raw = d->format.raw; |
9d8fa392 | 2028 | |
a70b8144 | 2029 | try |
9d8fa392 PA |
2030 | { |
2031 | struct value *val; | |
2032 | ||
4d01a485 | 2033 | val = evaluate_expression (d->exp.get ()); |
9d8fa392 PA |
2034 | print_formatted (val, d->format.size, &opts, gdb_stdout); |
2035 | } | |
230d2906 | 2036 | catch (const gdb_exception_error &ex) |
492d29ea | 2037 | { |
7f6aba03 TT |
2038 | fprintf_styled (gdb_stdout, metadata_style.style (), |
2039 | _("<error: %s>"), ex.what ()); | |
492d29ea | 2040 | } |
492d29ea | 2041 | |
c906108c SS |
2042 | printf_filtered ("\n"); |
2043 | } | |
2044 | ||
2045 | annotate_display_end (); | |
2046 | ||
2047 | gdb_flush (gdb_stdout); | |
c906108c SS |
2048 | } |
2049 | ||
2050 | /* Display all of the values on the auto-display chain which can be | |
2051 | evaluated in the current scope. */ | |
2052 | ||
2053 | void | |
fba45db2 | 2054 | do_displays (void) |
c906108c | 2055 | { |
52f0bd74 | 2056 | struct display *d; |
c906108c SS |
2057 | |
2058 | for (d = display_chain; d; d = d->next) | |
2059 | do_one_display (d); | |
2060 | } | |
2061 | ||
2062 | /* Delete the auto-display which we were in the process of displaying. | |
2063 | This is done when there is an error or a signal. */ | |
2064 | ||
2065 | void | |
fba45db2 | 2066 | disable_display (int num) |
c906108c | 2067 | { |
52f0bd74 | 2068 | struct display *d; |
c906108c SS |
2069 | |
2070 | for (d = display_chain; d; d = d->next) | |
2071 | if (d->number == num) | |
2072 | { | |
b5de0fa7 | 2073 | d->enabled_p = 0; |
c906108c SS |
2074 | return; |
2075 | } | |
a3f17187 | 2076 | printf_unfiltered (_("No display number %d.\n"), num); |
c906108c | 2077 | } |
c5aa993b | 2078 | |
c906108c | 2079 | void |
fba45db2 | 2080 | disable_current_display (void) |
c906108c SS |
2081 | { |
2082 | if (current_display_number >= 0) | |
2083 | { | |
2084 | disable_display (current_display_number); | |
3e43a32a MS |
2085 | fprintf_unfiltered (gdb_stderr, |
2086 | _("Disabling display %d to " | |
2087 | "avoid infinite recursion.\n"), | |
c5aa993b | 2088 | current_display_number); |
c906108c SS |
2089 | } |
2090 | current_display_number = -1; | |
2091 | } | |
2092 | ||
2093 | static void | |
1d12d88f | 2094 | info_display_command (const char *ignore, int from_tty) |
c906108c | 2095 | { |
52f0bd74 | 2096 | struct display *d; |
c906108c SS |
2097 | |
2098 | if (!display_chain) | |
a3f17187 | 2099 | printf_unfiltered (_("There are no auto-display expressions now.\n")); |
c906108c | 2100 | else |
a3f17187 AC |
2101 | printf_filtered (_("Auto-display expressions now in effect:\n\ |
2102 | Num Enb Expression\n")); | |
c906108c SS |
2103 | |
2104 | for (d = display_chain; d; d = d->next) | |
2105 | { | |
b5de0fa7 | 2106 | printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]); |
c906108c SS |
2107 | if (d->format.size) |
2108 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
c5aa993b | 2109 | d->format.format); |
c906108c SS |
2110 | else if (d->format.format) |
2111 | printf_filtered ("/%c ", d->format.format); | |
fa8a61dc | 2112 | puts_filtered (d->exp_string); |
f21c2bd7 | 2113 | if (d->block && !contained_in (get_selected_block (0), d->block, true)) |
a3f17187 | 2114 | printf_filtered (_(" (cannot be evaluated in the current context)")); |
c906108c | 2115 | printf_filtered ("\n"); |
c906108c SS |
2116 | } |
2117 | } | |
2118 | ||
c9174737 PA |
2119 | /* Callback fo map_display_numbers, that enables or disables the |
2120 | passed in display D. */ | |
2121 | ||
c906108c | 2122 | static void |
c9174737 | 2123 | do_enable_disable_display (struct display *d, void *data) |
c906108c | 2124 | { |
c9174737 PA |
2125 | d->enabled_p = *(int *) data; |
2126 | } | |
c906108c | 2127 | |
85102364 | 2128 | /* Implementation of both the "disable display" and "enable display" |
c9174737 PA |
2129 | commands. ENABLE decides what to do. */ |
2130 | ||
2131 | static void | |
77763700 | 2132 | enable_disable_display_command (const char *args, int from_tty, int enable) |
c9174737 PA |
2133 | { |
2134 | if (args == NULL) | |
c906108c | 2135 | { |
c9174737 | 2136 | struct display *d; |
c5aa993b | 2137 | |
c9174737 PA |
2138 | ALL_DISPLAYS (d) |
2139 | d->enabled_p = enable; | |
2140 | return; | |
2141 | } | |
c5aa993b | 2142 | |
c9174737 | 2143 | map_display_numbers (args, do_enable_disable_display, &enable); |
c906108c SS |
2144 | } |
2145 | ||
c9174737 PA |
2146 | /* The "enable display" command. */ |
2147 | ||
c906108c | 2148 | static void |
77763700 | 2149 | enable_display_command (const char *args, int from_tty) |
c906108c | 2150 | { |
c9174737 PA |
2151 | enable_disable_display_command (args, from_tty, 1); |
2152 | } | |
c5aa993b | 2153 | |
c9174737 | 2154 | /* The "disable display" command. */ |
c906108c | 2155 | |
c9174737 | 2156 | static void |
77763700 | 2157 | disable_display_command (const char *args, int from_tty) |
c9174737 PA |
2158 | { |
2159 | enable_disable_display_command (args, from_tty, 0); | |
c906108c | 2160 | } |
a3247a22 | 2161 | |
a3247a22 PP |
2162 | /* display_chain items point to blocks and expressions. Some expressions in |
2163 | turn may point to symbols. | |
2164 | Both symbols and blocks are obstack_alloc'd on objfile_stack, and are | |
2165 | obstack_free'd when a shared library is unloaded. | |
2166 | Clear pointers that are about to become dangling. | |
2167 | Both .exp and .block fields will be restored next time we need to display | |
2168 | an item by re-parsing .exp_string field in the new execution context. */ | |
2169 | ||
2170 | static void | |
63644780 | 2171 | clear_dangling_display_expressions (struct objfile *objfile) |
a3247a22 PP |
2172 | { |
2173 | struct display *d; | |
63644780 | 2174 | struct program_space *pspace; |
a3247a22 | 2175 | |
c0201579 JK |
2176 | /* With no symbol file we cannot have a block or expression from it. */ |
2177 | if (objfile == NULL) | |
2178 | return; | |
63644780 | 2179 | pspace = objfile->pspace; |
c0201579 | 2180 | if (objfile->separate_debug_objfile_backlink) |
63644780 NB |
2181 | { |
2182 | objfile = objfile->separate_debug_objfile_backlink; | |
2183 | gdb_assert (objfile->pspace == pspace); | |
2184 | } | |
c0201579 JK |
2185 | |
2186 | for (d = display_chain; d != NULL; d = d->next) | |
a3247a22 | 2187 | { |
63644780 | 2188 | if (d->pspace != pspace) |
c0201579 JK |
2189 | continue; |
2190 | ||
2191 | if (lookup_objfile_from_block (d->block) == objfile | |
4d01a485 | 2192 | || (d->exp != NULL && exp_uses_objfile (d->exp.get (), objfile))) |
c0201579 | 2193 | { |
4d01a485 | 2194 | d->exp.reset (); |
c0201579 JK |
2195 | d->block = NULL; |
2196 | } | |
a3247a22 PP |
2197 | } |
2198 | } | |
c906108c | 2199 | \f |
c5aa993b | 2200 | |
675dcf4f | 2201 | /* Print the value in stack frame FRAME of a variable specified by a |
aad95b57 TT |
2202 | struct symbol. NAME is the name to print; if NULL then VAR's print |
2203 | name will be used. STREAM is the ui_file on which to print the | |
2204 | value. INDENT specifies the number of indent levels to print | |
8f043999 JK |
2205 | before printing the variable name. |
2206 | ||
2207 | This function invalidates FRAME. */ | |
c906108c SS |
2208 | |
2209 | void | |
aad95b57 TT |
2210 | print_variable_and_value (const char *name, struct symbol *var, |
2211 | struct frame_info *frame, | |
2212 | struct ui_file *stream, int indent) | |
c906108c | 2213 | { |
c906108c | 2214 | |
aad95b57 | 2215 | if (!name) |
987012b8 | 2216 | name = var->print_name (); |
aad95b57 | 2217 | |
6a831f06 PA |
2218 | fprintf_filtered (stream, "%s%ps = ", n_spaces (2 * indent), |
2219 | styled_string (variable_name_style.style (), name)); | |
80ae2043 | 2220 | |
a70b8144 | 2221 | try |
0f6a939d PM |
2222 | { |
2223 | struct value *val; | |
2224 | struct value_print_options opts; | |
aad95b57 | 2225 | |
63e43d3a PMR |
2226 | /* READ_VAR_VALUE needs a block in order to deal with non-local |
2227 | references (i.e. to handle nested functions). In this context, we | |
2228 | print variables that are local to this frame, so we can avoid passing | |
2229 | a block to it. */ | |
2230 | val = read_var_value (var, NULL, frame); | |
0f6a939d | 2231 | get_user_print_options (&opts); |
3343315b | 2232 | opts.deref_ref = 1; |
0f6a939d | 2233 | common_val_print (val, stream, indent, &opts, current_language); |
8f043999 JK |
2234 | |
2235 | /* common_val_print invalidates FRAME when a pretty printer calls inferior | |
2236 | function. */ | |
2237 | frame = NULL; | |
0f6a939d | 2238 | } |
230d2906 | 2239 | catch (const gdb_exception_error &except) |
492d29ea | 2240 | { |
7f6aba03 TT |
2241 | fprintf_styled (stream, metadata_style.style (), |
2242 | "<error reading variable %s (%s)>", name, | |
2243 | except.what ()); | |
492d29ea | 2244 | } |
492d29ea | 2245 | |
aad95b57 | 2246 | fprintf_filtered (stream, "\n"); |
c906108c SS |
2247 | } |
2248 | ||
c2792f5a DE |
2249 | /* Subroutine of ui_printf to simplify it. |
2250 | Print VALUE to STREAM using FORMAT. | |
1f6f6e21 PW |
2251 | VALUE is a C-style string either on the target or |
2252 | in a GDB internal variable. */ | |
c2792f5a DE |
2253 | |
2254 | static void | |
2255 | printf_c_string (struct ui_file *stream, const char *format, | |
2256 | struct value *value) | |
2257 | { | |
1f6f6e21 | 2258 | const gdb_byte *str; |
c2792f5a | 2259 | |
7b973adc SDJ |
2260 | if (TYPE_CODE (value_type (value)) != TYPE_CODE_PTR |
2261 | && VALUE_LVAL (value) == lval_internalvar | |
1f6f6e21 | 2262 | && c_is_string_type_p (value_type (value))) |
3ae9ce5d | 2263 | { |
1f6f6e21 | 2264 | size_t len = TYPE_LENGTH (value_type (value)); |
c2792f5a | 2265 | |
1f6f6e21 PW |
2266 | /* Copy the internal var value to TEM_STR and append a terminating null |
2267 | character. This protects against corrupted C-style strings that lack | |
2268 | the terminating null char. It also allows Ada-style strings (not | |
2269 | null terminated) to be printed without problems. */ | |
2270 | gdb_byte *tem_str = (gdb_byte *) alloca (len + 1); | |
c2792f5a | 2271 | |
1f6f6e21 PW |
2272 | memcpy (tem_str, value_contents (value), len); |
2273 | tem_str [len] = 0; | |
2274 | str = tem_str; | |
c2792f5a | 2275 | } |
1f6f6e21 PW |
2276 | else |
2277 | { | |
2278 | CORE_ADDR tem = value_as_address (value);; | |
2279 | ||
2280 | if (tem == 0) | |
2281 | { | |
2282 | DIAGNOSTIC_PUSH | |
2283 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
2284 | fprintf_filtered (stream, format, "(null)"); | |
2285 | DIAGNOSTIC_POP | |
2286 | return; | |
2287 | } | |
2288 | ||
2289 | /* This is a %s argument. Find the length of the string. */ | |
2290 | size_t len; | |
2291 | ||
2292 | for (len = 0;; len++) | |
2293 | { | |
2294 | gdb_byte c; | |
c2792f5a | 2295 | |
1f6f6e21 PW |
2296 | QUIT; |
2297 | read_memory (tem + len, &c, 1); | |
2298 | if (c == 0) | |
2299 | break; | |
2300 | } | |
2301 | ||
2302 | /* Copy the string contents into a string inside GDB. */ | |
2303 | gdb_byte *tem_str = (gdb_byte *) alloca (len + 1); | |
2304 | ||
2305 | if (len != 0) | |
2306 | read_memory (tem, tem_str, len); | |
2307 | tem_str[len] = 0; | |
2308 | str = tem_str; | |
2309 | } | |
c2792f5a | 2310 | |
af39b1c2 SM |
2311 | DIAGNOSTIC_PUSH |
2312 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2313 | fprintf_filtered (stream, format, (char *) str); |
af39b1c2 | 2314 | DIAGNOSTIC_POP |
c2792f5a DE |
2315 | } |
2316 | ||
2317 | /* Subroutine of ui_printf to simplify it. | |
2318 | Print VALUE to STREAM using FORMAT. | |
1f6f6e21 PW |
2319 | VALUE is a wide C-style string on the target or |
2320 | in a GDB internal variable. */ | |
c2792f5a DE |
2321 | |
2322 | static void | |
2323 | printf_wide_c_string (struct ui_file *stream, const char *format, | |
2324 | struct value *value) | |
2325 | { | |
1f6f6e21 PW |
2326 | const gdb_byte *str; |
2327 | size_t len; | |
c2792f5a | 2328 | struct gdbarch *gdbarch = get_type_arch (value_type (value)); |
b858499d | 2329 | struct type *wctype = lookup_typename (current_language, |
c2792f5a DE |
2330 | "wchar_t", NULL, 0); |
2331 | int wcwidth = TYPE_LENGTH (wctype); | |
c2792f5a | 2332 | |
1f6f6e21 PW |
2333 | if (VALUE_LVAL (value) == lval_internalvar |
2334 | && c_is_string_type_p (value_type (value))) | |
3ae9ce5d | 2335 | { |
1f6f6e21 PW |
2336 | str = value_contents (value); |
2337 | len = TYPE_LENGTH (value_type (value)); | |
3ae9ce5d | 2338 | } |
1f6f6e21 | 2339 | else |
c2792f5a | 2340 | { |
1f6f6e21 | 2341 | CORE_ADDR tem = value_as_address (value); |
c2792f5a | 2342 | |
1f6f6e21 PW |
2343 | if (tem == 0) |
2344 | { | |
2345 | DIAGNOSTIC_PUSH | |
2346 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
2347 | fprintf_filtered (stream, format, "(null)"); | |
2348 | DIAGNOSTIC_POP | |
2349 | return; | |
2350 | } | |
2351 | ||
2352 | /* This is a %s argument. Find the length of the string. */ | |
2353 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
2354 | gdb_byte *buf = (gdb_byte *) alloca (wcwidth); | |
2355 | ||
2356 | for (len = 0;; len += wcwidth) | |
2357 | { | |
2358 | QUIT; | |
2359 | read_memory (tem + len, buf, wcwidth); | |
2360 | if (extract_unsigned_integer (buf, wcwidth, byte_order) == 0) | |
2361 | break; | |
2362 | } | |
2363 | ||
2364 | /* Copy the string contents into a string inside GDB. */ | |
2365 | gdb_byte *tem_str = (gdb_byte *) alloca (len + wcwidth); | |
2366 | ||
2367 | if (len != 0) | |
2368 | read_memory (tem, tem_str, len); | |
2369 | memset (&tem_str[len], 0, wcwidth); | |
2370 | str = tem_str; | |
2371 | } | |
c2792f5a | 2372 | |
8268c778 | 2373 | auto_obstack output; |
c2792f5a DE |
2374 | |
2375 | convert_between_encodings (target_wide_charset (gdbarch), | |
2376 | host_charset (), | |
1f6f6e21 | 2377 | str, len, wcwidth, |
c2792f5a DE |
2378 | &output, translit_char); |
2379 | obstack_grow_str0 (&output, ""); | |
2380 | ||
af39b1c2 SM |
2381 | DIAGNOSTIC_PUSH |
2382 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2383 | fprintf_filtered (stream, format, obstack_base (&output)); |
af39b1c2 | 2384 | DIAGNOSTIC_POP |
c2792f5a DE |
2385 | } |
2386 | ||
2387 | /* Subroutine of ui_printf to simplify it. | |
16e812b2 | 2388 | Print VALUE, a floating point value, to STREAM using FORMAT. */ |
c2792f5a DE |
2389 | |
2390 | static void | |
16e812b2 UW |
2391 | printf_floating (struct ui_file *stream, const char *format, |
2392 | struct value *value, enum argclass argclass) | |
c2792f5a | 2393 | { |
c2792f5a DE |
2394 | /* Parameter data. */ |
2395 | struct type *param_type = value_type (value); | |
2396 | struct gdbarch *gdbarch = get_type_arch (param_type); | |
c2792f5a | 2397 | |
16e812b2 UW |
2398 | /* Determine target type corresponding to the format string. */ |
2399 | struct type *fmt_type; | |
2400 | switch (argclass) | |
c2792f5a | 2401 | { |
16e812b2 UW |
2402 | case double_arg: |
2403 | fmt_type = builtin_type (gdbarch)->builtin_double; | |
2404 | break; | |
2405 | case long_double_arg: | |
2406 | fmt_type = builtin_type (gdbarch)->builtin_long_double; | |
2407 | break; | |
2408 | case dec32float_arg: | |
2409 | fmt_type = builtin_type (gdbarch)->builtin_decfloat; | |
2410 | break; | |
2411 | case dec64float_arg: | |
2412 | fmt_type = builtin_type (gdbarch)->builtin_decdouble; | |
2413 | break; | |
2414 | case dec128float_arg: | |
2415 | fmt_type = builtin_type (gdbarch)->builtin_declong; | |
2416 | break; | |
2417 | default: | |
2418 | gdb_assert_not_reached ("unexpected argument class"); | |
c2792f5a DE |
2419 | } |
2420 | ||
16e812b2 UW |
2421 | /* To match the traditional GDB behavior, the conversion is |
2422 | done differently depending on the type of the parameter: | |
2423 | ||
2424 | - if the parameter has floating-point type, it's value | |
2425 | is converted to the target type; | |
2426 | ||
2427 | - otherwise, if the parameter has a type that is of the | |
2428 | same size as a built-in floating-point type, the value | |
2429 | bytes are interpreted as if they were of that type, and | |
2430 | then converted to the target type (this is not done for | |
2431 | decimal floating-point argument classes); | |
2432 | ||
2433 | - otherwise, if the source value has an integer value, | |
2434 | it's value is converted to the target type; | |
c2792f5a | 2435 | |
16e812b2 | 2436 | - otherwise, an error is raised. |
c2792f5a | 2437 | |
16e812b2 UW |
2438 | In either case, the result of the conversion is a byte buffer |
2439 | formatted in the target format for the target type. */ | |
2440 | ||
2441 | if (TYPE_CODE (fmt_type) == TYPE_CODE_FLT) | |
2442 | { | |
2443 | param_type = float_type_from_length (param_type); | |
2444 | if (param_type != value_type (value)) | |
2445 | value = value_from_contents (param_type, value_contents (value)); | |
2446 | } | |
2447 | ||
2448 | value = value_cast (fmt_type, value); | |
c2792f5a | 2449 | |
3b4b2f16 | 2450 | /* Convert the value to a string and print it. */ |
f69fdf9b UW |
2451 | std::string str |
2452 | = target_float_to_string (value_contents (value), fmt_type, format); | |
3b4b2f16 | 2453 | fputs_filtered (str.c_str (), stream); |
c2792f5a DE |
2454 | } |
2455 | ||
2456 | /* Subroutine of ui_printf to simplify it. | |
2457 | Print VALUE, a target pointer, to STREAM using FORMAT. */ | |
2458 | ||
2459 | static void | |
2460 | printf_pointer (struct ui_file *stream, const char *format, | |
2461 | struct value *value) | |
2462 | { | |
2463 | /* We avoid the host's %p because pointers are too | |
2464 | likely to be the wrong size. The only interesting | |
2465 | modifier for %p is a width; extract that, and then | |
2466 | handle %p as glibc would: %#x or a literal "(nil)". */ | |
2467 | ||
2468 | const char *p; | |
2469 | char *fmt, *fmt_p; | |
2470 | #ifdef PRINTF_HAS_LONG_LONG | |
2471 | long long val = value_as_long (value); | |
2472 | #else | |
2473 | long val = value_as_long (value); | |
2474 | #endif | |
2475 | ||
224c3ddb | 2476 | fmt = (char *) alloca (strlen (format) + 5); |
c2792f5a DE |
2477 | |
2478 | /* Copy up to the leading %. */ | |
2479 | p = format; | |
2480 | fmt_p = fmt; | |
2481 | while (*p) | |
2482 | { | |
2483 | int is_percent = (*p == '%'); | |
2484 | ||
2485 | *fmt_p++ = *p++; | |
2486 | if (is_percent) | |
2487 | { | |
2488 | if (*p == '%') | |
2489 | *fmt_p++ = *p++; | |
2490 | else | |
2491 | break; | |
2492 | } | |
2493 | } | |
2494 | ||
2495 | if (val != 0) | |
2496 | *fmt_p++ = '#'; | |
2497 | ||
b8c2339b TT |
2498 | /* Copy any width or flags. Only the "-" flag is valid for pointers |
2499 | -- see the format_pieces constructor. */ | |
2500 | while (*p == '-' || (*p >= '0' && *p < '9')) | |
c2792f5a DE |
2501 | *fmt_p++ = *p++; |
2502 | ||
2503 | gdb_assert (*p == 'p' && *(p + 1) == '\0'); | |
2504 | if (val != 0) | |
2505 | { | |
2506 | #ifdef PRINTF_HAS_LONG_LONG | |
2507 | *fmt_p++ = 'l'; | |
2508 | #endif | |
2509 | *fmt_p++ = 'l'; | |
2510 | *fmt_p++ = 'x'; | |
2511 | *fmt_p++ = '\0'; | |
af39b1c2 SM |
2512 | DIAGNOSTIC_PUSH |
2513 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2514 | fprintf_filtered (stream, fmt, val); |
af39b1c2 | 2515 | DIAGNOSTIC_POP |
c2792f5a DE |
2516 | } |
2517 | else | |
2518 | { | |
2519 | *fmt_p++ = 's'; | |
2520 | *fmt_p++ = '\0'; | |
af39b1c2 SM |
2521 | DIAGNOSTIC_PUSH |
2522 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2523 | fprintf_filtered (stream, fmt, "(nil)"); |
af39b1c2 | 2524 | DIAGNOSTIC_POP |
c2792f5a DE |
2525 | } |
2526 | } | |
2527 | ||
a04b0428 JB |
2528 | /* printf "printf format string" ARG to STREAM. */ |
2529 | ||
2530 | static void | |
bbc13ae3 | 2531 | ui_printf (const char *arg, struct ui_file *stream) |
c906108c | 2532 | { |
bbc13ae3 | 2533 | const char *s = arg; |
8e481c3b | 2534 | std::vector<struct value *> val_args; |
c906108c SS |
2535 | |
2536 | if (s == 0) | |
e2e0b3e5 | 2537 | error_no_arg (_("format-control string and values to print")); |
c906108c | 2538 | |
f1735a53 | 2539 | s = skip_spaces (s); |
c906108c | 2540 | |
675dcf4f | 2541 | /* A format string should follow, enveloped in double quotes. */ |
c906108c | 2542 | if (*s++ != '"') |
8a3fe4f8 | 2543 | error (_("Bad format string, missing '\"'.")); |
c906108c | 2544 | |
8e481c3b | 2545 | format_pieces fpieces (&s); |
c906108c | 2546 | |
d3ce09f5 SS |
2547 | if (*s++ != '"') |
2548 | error (_("Bad format string, non-terminated '\"'.")); | |
2549 | ||
f1735a53 | 2550 | s = skip_spaces (s); |
c906108c SS |
2551 | |
2552 | if (*s != ',' && *s != 0) | |
8a3fe4f8 | 2553 | error (_("Invalid argument syntax")); |
c906108c | 2554 | |
c5aa993b JM |
2555 | if (*s == ',') |
2556 | s++; | |
f1735a53 | 2557 | s = skip_spaces (s); |
c906108c | 2558 | |
c906108c | 2559 | { |
c906108c | 2560 | int nargs_wanted; |
8e481c3b TT |
2561 | int i; |
2562 | const char *current_substring; | |
c906108c | 2563 | |
c906108c | 2564 | nargs_wanted = 0; |
8e481c3b TT |
2565 | for (auto &&piece : fpieces) |
2566 | if (piece.argclass != literal_piece) | |
d3ce09f5 | 2567 | ++nargs_wanted; |
c906108c SS |
2568 | |
2569 | /* Now, parse all arguments and evaluate them. | |
2570 | Store the VALUEs in VAL_ARGS. */ | |
2571 | ||
2572 | while (*s != '\0') | |
2573 | { | |
bbc13ae3 | 2574 | const char *s1; |
ad3bbd48 | 2575 | |
a04b0428 | 2576 | s1 = s; |
8e481c3b | 2577 | val_args.push_back (parse_to_comma_and_eval (&s1)); |
c5aa993b | 2578 | |
c906108c SS |
2579 | s = s1; |
2580 | if (*s == ',') | |
2581 | s++; | |
2582 | } | |
c5aa993b | 2583 | |
8e481c3b | 2584 | if (val_args.size () != nargs_wanted) |
8a3fe4f8 | 2585 | error (_("Wrong number of arguments for specified format-string")); |
c906108c SS |
2586 | |
2587 | /* Now actually print them. */ | |
d3ce09f5 | 2588 | i = 0; |
8e481c3b | 2589 | for (auto &&piece : fpieces) |
c906108c | 2590 | { |
8e481c3b TT |
2591 | current_substring = piece.string; |
2592 | switch (piece.argclass) | |
c906108c SS |
2593 | { |
2594 | case string_arg: | |
c2792f5a | 2595 | printf_c_string (stream, current_substring, val_args[i]); |
c906108c | 2596 | break; |
6c7a06a3 | 2597 | case wide_string_arg: |
c2792f5a | 2598 | printf_wide_c_string (stream, current_substring, val_args[i]); |
6c7a06a3 TT |
2599 | break; |
2600 | case wide_char_arg: | |
2601 | { | |
50810684 UW |
2602 | struct gdbarch *gdbarch |
2603 | = get_type_arch (value_type (val_args[i])); | |
b858499d | 2604 | struct type *wctype = lookup_typename (current_language, |
e6c014f2 | 2605 | "wchar_t", NULL, 0); |
6c7a06a3 | 2606 | struct type *valtype; |
6c7a06a3 TT |
2607 | const gdb_byte *bytes; |
2608 | ||
2609 | valtype = value_type (val_args[i]); | |
2610 | if (TYPE_LENGTH (valtype) != TYPE_LENGTH (wctype) | |
2611 | || TYPE_CODE (valtype) != TYPE_CODE_INT) | |
2612 | error (_("expected wchar_t argument for %%lc")); | |
2613 | ||
2614 | bytes = value_contents (val_args[i]); | |
2615 | ||
8268c778 | 2616 | auto_obstack output; |
6c7a06a3 | 2617 | |
f870a310 | 2618 | convert_between_encodings (target_wide_charset (gdbarch), |
6c7a06a3 TT |
2619 | host_charset (), |
2620 | bytes, TYPE_LENGTH (valtype), | |
2621 | TYPE_LENGTH (valtype), | |
2622 | &output, translit_char); | |
2623 | obstack_grow_str0 (&output, ""); | |
2624 | ||
af39b1c2 SM |
2625 | DIAGNOSTIC_PUSH |
2626 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 HZ |
2627 | fprintf_filtered (stream, current_substring, |
2628 | obstack_base (&output)); | |
af39b1c2 | 2629 | DIAGNOSTIC_POP |
6c7a06a3 TT |
2630 | } |
2631 | break; | |
c906108c | 2632 | case long_long_arg: |
74a0d9f6 | 2633 | #ifdef PRINTF_HAS_LONG_LONG |
c906108c SS |
2634 | { |
2635 | long long val = value_as_long (val_args[i]); | |
ad3bbd48 | 2636 | |
af39b1c2 SM |
2637 | DIAGNOSTIC_PUSH |
2638 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2639 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2640 | DIAGNOSTIC_POP |
c906108c SS |
2641 | break; |
2642 | } | |
2643 | #else | |
8a3fe4f8 | 2644 | error (_("long long not supported in printf")); |
c906108c SS |
2645 | #endif |
2646 | case int_arg: | |
2647 | { | |
46e9880c | 2648 | int val = value_as_long (val_args[i]); |
ad3bbd48 | 2649 | |
af39b1c2 SM |
2650 | DIAGNOSTIC_PUSH |
2651 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2652 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2653 | DIAGNOSTIC_POP |
46e9880c DJ |
2654 | break; |
2655 | } | |
2656 | case long_arg: | |
2657 | { | |
c906108c | 2658 | long val = value_as_long (val_args[i]); |
ad3bbd48 | 2659 | |
e06f3d6e AB |
2660 | DIAGNOSTIC_PUSH |
2661 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
2662 | fprintf_filtered (stream, current_substring, val); | |
2663 | DIAGNOSTIC_POP | |
2664 | break; | |
2665 | } | |
2666 | case size_t_arg: | |
2667 | { | |
2668 | size_t val = value_as_long (val_args[i]); | |
2669 | ||
af39b1c2 SM |
2670 | DIAGNOSTIC_PUSH |
2671 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2672 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2673 | DIAGNOSTIC_POP |
c906108c SS |
2674 | break; |
2675 | } | |
16e812b2 UW |
2676 | /* Handles floating-point values. */ |
2677 | case double_arg: | |
2678 | case long_double_arg: | |
2679 | case dec32float_arg: | |
2680 | case dec64float_arg: | |
2681 | case dec128float_arg: | |
2682 | printf_floating (stream, current_substring, val_args[i], | |
8e481c3b | 2683 | piece.argclass); |
c2792f5a | 2684 | break; |
2025a643 | 2685 | case ptr_arg: |
c2792f5a DE |
2686 | printf_pointer (stream, current_substring, val_args[i]); |
2687 | break; | |
d3ce09f5 SS |
2688 | case literal_piece: |
2689 | /* Print a portion of the format string that has no | |
2690 | directives. Note that this will not include any | |
2691 | ordinary %-specs, but it might include "%%". That is | |
2692 | why we use printf_filtered and not puts_filtered here. | |
2693 | Also, we pass a dummy argument because some platforms | |
2694 | have modified GCC to include -Wformat-security by | |
2695 | default, which will warn here if there is no | |
2696 | argument. */ | |
af39b1c2 SM |
2697 | DIAGNOSTIC_PUSH |
2698 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
d3ce09f5 | 2699 | fprintf_filtered (stream, current_substring, 0); |
af39b1c2 | 2700 | DIAGNOSTIC_POP |
d3ce09f5 | 2701 | break; |
675dcf4f MK |
2702 | default: |
2703 | internal_error (__FILE__, __LINE__, | |
2025a643 | 2704 | _("failed internal consistency check")); |
c906108c | 2705 | } |
d3ce09f5 | 2706 | /* Maybe advance to the next argument. */ |
8e481c3b | 2707 | if (piece.argclass != literal_piece) |
d3ce09f5 | 2708 | ++i; |
c906108c | 2709 | } |
c906108c | 2710 | } |
c906108c | 2711 | } |
c906108c | 2712 | |
f1421989 HZ |
2713 | /* Implement the "printf" command. */ |
2714 | ||
a04b0428 | 2715 | static void |
0b39b52e | 2716 | printf_command (const char *arg, int from_tty) |
f1421989 | 2717 | { |
a04b0428 | 2718 | ui_printf (arg, gdb_stdout); |
ef1dfa36 TT |
2719 | reset_terminal_style (gdb_stdout); |
2720 | wrap_here (""); | |
da5bd37e | 2721 | gdb_stdout->flush (); |
f1421989 HZ |
2722 | } |
2723 | ||
2724 | /* Implement the "eval" command. */ | |
2725 | ||
2726 | static void | |
0b39b52e | 2727 | eval_command (const char *arg, int from_tty) |
f1421989 | 2728 | { |
d7e74731 | 2729 | string_file stb; |
f1421989 | 2730 | |
d7e74731 | 2731 | ui_printf (arg, &stb); |
f1421989 | 2732 | |
d7e74731 | 2733 | std::string expanded = insert_user_defined_cmd_args (stb.c_str ()); |
01770bbd | 2734 | |
95a6b0a1 | 2735 | execute_command (expanded.c_str (), from_tty); |
f1421989 HZ |
2736 | } |
2737 | ||
6c265988 | 2738 | void _initialize_printcmd (); |
c906108c | 2739 | void |
6c265988 | 2740 | _initialize_printcmd () |
c906108c | 2741 | { |
c94fdfd0 EZ |
2742 | struct cmd_list_element *c; |
2743 | ||
c906108c SS |
2744 | current_display_number = -1; |
2745 | ||
76727919 | 2746 | gdb::observers::free_objfile.attach (clear_dangling_display_expressions); |
a3247a22 | 2747 | |
11db9430 | 2748 | add_info ("address", info_address_command, |
188e1fa9 TT |
2749 | _("Describe where symbol SYM is stored.\n\ |
2750 | Usage: info address SYM")); | |
c906108c | 2751 | |
11db9430 | 2752 | add_info ("symbol", info_symbol_command, _("\ |
1bedd215 | 2753 | Describe what symbol is at location ADDR.\n\ |
188e1fa9 | 2754 | Usage: info symbol ADDR\n\ |
1bedd215 | 2755 | Only for symbols with fixed locations (global or static scope).")); |
c906108c | 2756 | |
1bedd215 AC |
2757 | add_com ("x", class_vars, x_command, _("\ |
2758 | Examine memory: x/FMT ADDRESS.\n\ | |
c906108c SS |
2759 | ADDRESS is an expression for the memory address to examine.\n\ |
2760 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2761 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
6fbe845e AB |
2762 | t(binary), f(float), a(address), i(instruction), c(char), s(string)\n\ |
2763 | and z(hex, zero padded on the left).\n\ | |
1bedd215 | 2764 | Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ |
c906108c | 2765 | The specified number of objects of the specified size are printed\n\ |
bb556f1f TK |
2766 | according to the format. If a negative number is specified, memory is\n\ |
2767 | examined backward from the address.\n\n\ | |
c906108c SS |
2768 | Defaults for format and size letters are those previously used.\n\ |
2769 | Default count is 1. Default address is following last thing printed\n\ | |
1bedd215 | 2770 | with this command or \"print\".")); |
c906108c | 2771 | |
11db9430 | 2772 | add_info ("display", info_display_command, _("\ |
188e1fa9 TT |
2773 | Expressions to display when program stops, with code numbers.\n\ |
2774 | Usage: info display")); | |
c906108c | 2775 | |
1a966eab AC |
2776 | add_cmd ("undisplay", class_vars, undisplay_command, _("\ |
2777 | Cancel some expressions to be displayed when program stops.\n\ | |
188e1fa9 | 2778 | Usage: undisplay [NUM]...\n\ |
c906108c SS |
2779 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2780 | No argument means cancel all automatic-display expressions.\n\ | |
2781 | \"delete display\" has the same effect as this command.\n\ | |
1a966eab | 2782 | Do \"info display\" to see current list of code numbers."), |
c5aa993b | 2783 | &cmdlist); |
c906108c | 2784 | |
1bedd215 AC |
2785 | add_com ("display", class_vars, display_command, _("\ |
2786 | Print value of expression EXP each time the program stops.\n\ | |
188e1fa9 | 2787 | Usage: display[/FMT] EXP\n\ |
c906108c SS |
2788 | /FMT may be used before EXP as in the \"print\" command.\n\ |
2789 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2790 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2791 | and examining is done as in the \"x\" command.\n\n\ | |
2792 | With no argument, display all currently requested auto-display expressions.\n\ | |
1bedd215 | 2793 | Use \"undisplay\" to cancel display requests previously made.")); |
c906108c | 2794 | |
c9174737 | 2795 | add_cmd ("display", class_vars, enable_display_command, _("\ |
1a966eab | 2796 | Enable some expressions to be displayed when program stops.\n\ |
188e1fa9 | 2797 | Usage: enable display [NUM]...\n\ |
c906108c SS |
2798 | Arguments are the code numbers of the expressions to resume displaying.\n\ |
2799 | No argument means enable all automatic-display expressions.\n\ | |
1a966eab | 2800 | Do \"info display\" to see current list of code numbers."), &enablelist); |
c906108c | 2801 | |
1a966eab AC |
2802 | add_cmd ("display", class_vars, disable_display_command, _("\ |
2803 | Disable some expressions to be displayed when program stops.\n\ | |
188e1fa9 | 2804 | Usage: disable display [NUM]...\n\ |
c906108c SS |
2805 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2806 | No argument means disable all automatic-display expressions.\n\ | |
1a966eab | 2807 | Do \"info display\" to see current list of code numbers."), &disablelist); |
c906108c | 2808 | |
1a966eab AC |
2809 | add_cmd ("display", class_vars, undisplay_command, _("\ |
2810 | Cancel some expressions to be displayed when program stops.\n\ | |
188e1fa9 | 2811 | Usage: delete display [NUM]...\n\ |
c906108c SS |
2812 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2813 | No argument means cancel all automatic-display expressions.\n\ | |
1a966eab | 2814 | Do \"info display\" to see current list of code numbers."), &deletelist); |
c906108c | 2815 | |
1bedd215 | 2816 | add_com ("printf", class_vars, printf_command, _("\ |
80ae639d | 2817 | Formatted printing, like the C \"printf\" function.\n\ |
188e1fa9 | 2818 | Usage: printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ |
80ae639d | 2819 | This supports most C printf format specifications, like %s, %d, etc.")); |
c906108c | 2820 | |
1bedd215 AC |
2821 | add_com ("output", class_vars, output_command, _("\ |
2822 | Like \"print\" but don't put in value history and don't print newline.\n\ | |
188e1fa9 | 2823 | Usage: output EXP\n\ |
1bedd215 | 2824 | This is useful in user-defined commands.")); |
c906108c | 2825 | |
1bedd215 | 2826 | add_prefix_cmd ("set", class_vars, set_command, _("\ |
590042fc | 2827 | Evaluate expression EXP and assign result to variable VAR.\n\ |
188e1fa9 TT |
2828 | Usage: set VAR = EXP\n\ |
2829 | This uses assignment syntax appropriate for the current language\n\ | |
2830 | (VAR = EXP or VAR := EXP for example).\n\ | |
2831 | VAR may be a debugger \"convenience\" variable (names starting\n\ | |
c906108c | 2832 | with $), a register (a few standard names starting with $), or an actual\n\ |
1bedd215 AC |
2833 | variable in the program being debugged. EXP is any valid expression.\n\ |
2834 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
2835 | \n\ | |
2836 | With a subcommand, this command modifies parts of the gdb environment.\n\ | |
2837 | You can see these environment settings with the \"show\" command."), | |
c5aa993b | 2838 | &setlist, "set ", 1, &cmdlist); |
c906108c | 2839 | if (dbx_commands) |
0b39b52e | 2840 | add_com ("assign", class_vars, set_command, _("\ |
590042fc | 2841 | Evaluate expression EXP and assign result to variable VAR.\n\ |
188e1fa9 TT |
2842 | Usage: assign VAR = EXP\n\ |
2843 | This uses assignment syntax appropriate for the current language\n\ | |
2844 | (VAR = EXP or VAR := EXP for example).\n\ | |
2845 | VAR may be a debugger \"convenience\" variable (names starting\n\ | |
c906108c | 2846 | with $), a register (a few standard names starting with $), or an actual\n\ |
1bedd215 AC |
2847 | variable in the program being debugged. EXP is any valid expression.\n\ |
2848 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
c906108c | 2849 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
1bedd215 | 2850 | You can see these environment settings with the \"show\" command.")); |
c906108c | 2851 | |
0df8b418 | 2852 | /* "call" is the same as "set", but handy for dbx users to call fns. */ |
1bedd215 AC |
2853 | c = add_com ("call", class_vars, call_command, _("\ |
2854 | Call a function in the program.\n\ | |
188e1fa9 | 2855 | Usage: call EXP\n\ |
c906108c SS |
2856 | The argument is the function name and arguments, in the notation of the\n\ |
2857 | current working language. The result is printed and saved in the value\n\ | |
1bedd215 | 2858 | history, if it is not void.")); |
7d8062de | 2859 | set_cmd_completer_handle_brkchars (c, print_command_completer); |
c906108c | 2860 | |
1a966eab | 2861 | add_cmd ("variable", class_vars, set_command, _("\ |
590042fc | 2862 | Evaluate expression EXP and assign result to variable VAR.\n\ |
188e1fa9 TT |
2863 | Usage: set variable VAR = EXP\n\ |
2864 | This uses assignment syntax appropriate for the current language\n\ | |
2865 | (VAR = EXP or VAR := EXP for example).\n\ | |
2866 | VAR may be a debugger \"convenience\" variable (names starting\n\ | |
c906108c SS |
2867 | with $), a register (a few standard names starting with $), or an actual\n\ |
2868 | variable in the program being debugged. EXP is any valid expression.\n\ | |
1a966eab | 2869 | This may usually be abbreviated to simply \"set\"."), |
c5aa993b | 2870 | &setlist); |
3fcded8f | 2871 | add_alias_cmd ("var", "variable", class_vars, 0, &setlist); |
c906108c | 2872 | |
7d8062de PA |
2873 | const auto print_opts = make_value_print_options_def_group (nullptr); |
2874 | ||
8abfcabc | 2875 | static const std::string print_help = gdb::option::build_help (_("\ |
1bedd215 | 2876 | Print value of expression EXP.\n\ |
7d8062de PA |
2877 | Usage: print [[OPTION]... --] [/FMT] [EXP]\n\ |
2878 | \n\ | |
2879 | Options:\n\ | |
590042fc PW |
2880 | %OPTIONS%\n\ |
2881 | \n\ | |
7d8062de PA |
2882 | Note: because this command accepts arbitrary expressions, if you\n\ |
2883 | specify any command option, you must use a double dash (\"--\")\n\ | |
2884 | to mark the end of option processing. E.g.: \"print -o -- myobj\".\n\ | |
2885 | \n\ | |
c906108c SS |
2886 | Variables accessible are those of the lexical environment of the selected\n\ |
2887 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2888 | \n\ | |
2889 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2890 | $$NUM refers to NUM'th value back from the last one.\n\ | |
1bedd215 AC |
2891 | Names starting with $ refer to registers (with the values they would have\n\ |
2892 | if the program were to return to the stack frame now selected, restoring\n\ | |
c906108c SS |
2893 | all registers saved by frames farther in) or else to debugger\n\ |
2894 | \"convenience\" variables (any such name not a known register).\n\ | |
1bedd215 AC |
2895 | Use assignment expressions to give values to convenience variables.\n\ |
2896 | \n\ | |
c906108c SS |
2897 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ |
2898 | @ is a binary operator for treating consecutive data objects\n\ | |
2899 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2900 | element is FOO, whose second element is stored in the space following\n\ | |
2901 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
1bedd215 AC |
2902 | resides in memory.\n\ |
2903 | \n\ | |
c906108c | 2904 | EXP may be preceded with /FMT, where FMT is a format letter\n\ |
7d8062de PA |
2905 | but no count or size letter (see \"x\" command)."), |
2906 | print_opts); | |
2907 | ||
2908 | c = add_com ("print", class_vars, print_command, print_help.c_str ()); | |
2909 | set_cmd_completer_handle_brkchars (c, print_command_completer); | |
c906108c | 2910 | add_com_alias ("p", "print", class_vars, 1); |
e93a8774 | 2911 | add_com_alias ("inspect", "print", class_vars, 1); |
c906108c | 2912 | |
35096d9d AC |
2913 | add_setshow_uinteger_cmd ("max-symbolic-offset", no_class, |
2914 | &max_symbolic_offset, _("\ | |
188e1fa9 TT |
2915 | Set the largest offset that will be printed in <SYMBOL+1234> form."), _("\ |
2916 | Show the largest offset that will be printed in <SYMBOL+1234> form."), _("\ | |
f81d1120 PA |
2917 | Tell GDB to only display the symbolic form of an address if the\n\ |
2918 | offset between the closest earlier symbol and the address is less than\n\ | |
2919 | the specified maximum offset. The default is \"unlimited\", which tells GDB\n\ | |
2920 | to always print the symbolic form of an address if any symbol precedes\n\ | |
2921 | it. Zero is equivalent to \"unlimited\"."), | |
35096d9d | 2922 | NULL, |
920d2a44 | 2923 | show_max_symbolic_offset, |
35096d9d | 2924 | &setprintlist, &showprintlist); |
5bf193a2 AC |
2925 | add_setshow_boolean_cmd ("symbol-filename", no_class, |
2926 | &print_symbol_filename, _("\ | |
188e1fa9 TT |
2927 | Set printing of source filename and line number with <SYMBOL>."), _("\ |
2928 | Show printing of source filename and line number with <SYMBOL>."), NULL, | |
5bf193a2 | 2929 | NULL, |
920d2a44 | 2930 | show_print_symbol_filename, |
5bf193a2 | 2931 | &setprintlist, &showprintlist); |
f1421989 HZ |
2932 | |
2933 | add_com ("eval", no_class, eval_command, _("\ | |
188e1fa9 TT |
2934 | Construct a GDB command and then evaluate it.\n\ |
2935 | Usage: eval \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
2936 | Convert the arguments to a string as \"printf\" would, but then\n\ | |
2937 | treat this string as a command line, and evaluate it.")); | |
c906108c | 2938 | } |