Commit | Line | Data |
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c906108c | 1 | /* Print values for GNU debugger GDB. |
e2ad119d | 2 | |
42a4f53d | 3 | Copyright (C) 1986-2019 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
c906108c SS |
21 | #include "frame.h" |
22 | #include "symtab.h" | |
23 | #include "gdbtypes.h" | |
24 | #include "value.h" | |
25 | #include "language.h" | |
26 | #include "expression.h" | |
27 | #include "gdbcore.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "target.h" | |
30 | #include "breakpoint.h" | |
31 | #include "demangle.h" | |
50f182aa | 32 | #include "gdb-demangle.h" |
c906108c SS |
33 | #include "valprint.h" |
34 | #include "annotate.h" | |
c5aa993b JM |
35 | #include "symfile.h" /* for overlay functions */ |
36 | #include "objfiles.h" /* ditto */ | |
c94fdfd0 | 37 | #include "completer.h" /* for completion functions */ |
8b93c638 | 38 | #include "ui-out.h" |
fe898f56 | 39 | #include "block.h" |
92bf2b80 | 40 | #include "disasm.h" |
f69fdf9b | 41 | #include "target-float.h" |
76727919 | 42 | #include "observable.h" |
a3247a22 | 43 | #include "solist.h" |
a3247a22 | 44 | #include "parser-defs.h" |
6c7a06a3 | 45 | #include "charset.h" |
704e9165 | 46 | #include "arch-utils.h" |
e9cafbcc | 47 | #include "cli/cli-utils.h" |
7d8062de | 48 | #include "cli/cli-option.h" |
01770bbd | 49 | #include "cli/cli-script.h" |
80ae2043 | 50 | #include "cli/cli-style.h" |
0747795c | 51 | #include "common/format.h" |
05cba821 | 52 | #include "source.h" |
d5722aa2 | 53 | #include "common/byte-vector.h" |
7d8062de | 54 | #include "common/gdb_optional.h" |
c906108c | 55 | |
c906108c SS |
56 | /* Last specified output format. */ |
57 | ||
a6bac58e | 58 | static char last_format = 0; |
c906108c SS |
59 | |
60 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
61 | ||
62 | static char last_size = 'w'; | |
63 | ||
9be2ae8f TT |
64 | /* Last specified count for the 'x' command. */ |
65 | ||
66 | static int last_count; | |
67 | ||
5d3729b5 | 68 | /* Default address to examine next, and associated architecture. */ |
c906108c | 69 | |
5d3729b5 | 70 | static struct gdbarch *next_gdbarch; |
c906108c SS |
71 | static CORE_ADDR next_address; |
72 | ||
a4642986 MR |
73 | /* Number of delay instructions following current disassembled insn. */ |
74 | ||
75 | static int branch_delay_insns; | |
76 | ||
c906108c SS |
77 | /* Last address examined. */ |
78 | ||
79 | static CORE_ADDR last_examine_address; | |
80 | ||
81 | /* Contents of last address examined. | |
82 | This is not valid past the end of the `x' command! */ | |
83 | ||
9b558729 | 84 | static value_ref_ptr last_examine_value; |
c906108c SS |
85 | |
86 | /* Largest offset between a symbolic value and an address, that will be | |
87 | printed as `0x1234 <symbol+offset>'. */ | |
88 | ||
89 | static unsigned int max_symbolic_offset = UINT_MAX; | |
920d2a44 AC |
90 | static void |
91 | show_max_symbolic_offset (struct ui_file *file, int from_tty, | |
92 | struct cmd_list_element *c, const char *value) | |
93 | { | |
3e43a32a MS |
94 | fprintf_filtered (file, |
95 | _("The largest offset that will be " | |
96 | "printed in <symbol+1234> form is %s.\n"), | |
920d2a44 AC |
97 | value); |
98 | } | |
c906108c SS |
99 | |
100 | /* Append the source filename and linenumber of the symbol when | |
101 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
102 | static int print_symbol_filename = 0; | |
920d2a44 AC |
103 | static void |
104 | show_print_symbol_filename (struct ui_file *file, int from_tty, | |
105 | struct cmd_list_element *c, const char *value) | |
106 | { | |
3e43a32a MS |
107 | fprintf_filtered (file, _("Printing of source filename and " |
108 | "line number with <symbol> is %s.\n"), | |
920d2a44 AC |
109 | value); |
110 | } | |
c906108c SS |
111 | |
112 | /* Number of auto-display expression currently being displayed. | |
9d8fa392 | 113 | So that we can disable it if we get a signal within it. |
c906108c SS |
114 | -1 when not doing one. */ |
115 | ||
5a18e302 | 116 | static int current_display_number; |
c906108c | 117 | |
c906108c | 118 | struct display |
c5aa993b JM |
119 | { |
120 | /* Chain link to next auto-display item. */ | |
121 | struct display *next; | |
6c95b8df | 122 | |
fa8a61dc TT |
123 | /* The expression as the user typed it. */ |
124 | char *exp_string; | |
6c95b8df | 125 | |
c5aa993b | 126 | /* Expression to be evaluated and displayed. */ |
4d01a485 | 127 | expression_up exp; |
6c95b8df | 128 | |
c5aa993b JM |
129 | /* Item number of this auto-display item. */ |
130 | int number; | |
6c95b8df | 131 | |
c5aa993b JM |
132 | /* Display format specified. */ |
133 | struct format_data format; | |
6c95b8df PA |
134 | |
135 | /* Program space associated with `block'. */ | |
136 | struct program_space *pspace; | |
137 | ||
0df8b418 | 138 | /* Innermost block required by this expression when evaluated. */ |
270140bd | 139 | const struct block *block; |
6c95b8df | 140 | |
0df8b418 | 141 | /* Status of this display (enabled or disabled). */ |
b5de0fa7 | 142 | int enabled_p; |
c5aa993b | 143 | }; |
c906108c SS |
144 | |
145 | /* Chain of expressions whose values should be displayed | |
146 | automatically each time the program stops. */ | |
147 | ||
148 | static struct display *display_chain; | |
149 | ||
150 | static int display_number; | |
151 | ||
c9174737 PA |
152 | /* Walk the following statement or block through all displays. |
153 | ALL_DISPLAYS_SAFE does so even if the statement deletes the current | |
154 | display. */ | |
3c3fe74c PA |
155 | |
156 | #define ALL_DISPLAYS(B) \ | |
157 | for (B = display_chain; B; B = B->next) | |
158 | ||
c9174737 PA |
159 | #define ALL_DISPLAYS_SAFE(B,TMP) \ |
160 | for (B = display_chain; \ | |
161 | B ? (TMP = B->next, 1): 0; \ | |
162 | B = TMP) | |
163 | ||
0df8b418 | 164 | /* Prototypes for local functions. */ |
c906108c | 165 | |
a14ed312 | 166 | static void do_one_display (struct display *); |
c906108c | 167 | \f |
c5aa993b | 168 | |
c906108c SS |
169 | /* Decode a format specification. *STRING_PTR should point to it. |
170 | OFORMAT and OSIZE are used as defaults for the format and size | |
171 | if none are given in the format specification. | |
172 | If OSIZE is zero, then the size field of the returned value | |
173 | should be set only if a size is explicitly specified by the | |
174 | user. | |
175 | The structure returned describes all the data | |
176 | found in the specification. In addition, *STRING_PTR is advanced | |
177 | past the specification and past all whitespace following it. */ | |
178 | ||
179 | static struct format_data | |
6f937416 | 180 | decode_format (const char **string_ptr, int oformat, int osize) |
c906108c SS |
181 | { |
182 | struct format_data val; | |
6f937416 | 183 | const char *p = *string_ptr; |
c906108c SS |
184 | |
185 | val.format = '?'; | |
186 | val.size = '?'; | |
187 | val.count = 1; | |
a6bac58e | 188 | val.raw = 0; |
c906108c | 189 | |
bb556f1f TK |
190 | if (*p == '-') |
191 | { | |
192 | val.count = -1; | |
193 | p++; | |
194 | } | |
c906108c | 195 | if (*p >= '0' && *p <= '9') |
bb556f1f | 196 | val.count *= atoi (p); |
c5aa993b JM |
197 | while (*p >= '0' && *p <= '9') |
198 | p++; | |
c906108c SS |
199 | |
200 | /* Now process size or format letters that follow. */ | |
201 | ||
202 | while (1) | |
203 | { | |
204 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
205 | val.size = *p++; | |
a6bac58e TT |
206 | else if (*p == 'r') |
207 | { | |
208 | val.raw = 1; | |
209 | p++; | |
210 | } | |
c906108c SS |
211 | else if (*p >= 'a' && *p <= 'z') |
212 | val.format = *p++; | |
213 | else | |
214 | break; | |
215 | } | |
216 | ||
2f433492 | 217 | *string_ptr = skip_spaces (p); |
c906108c SS |
218 | |
219 | /* Set defaults for format and size if not specified. */ | |
220 | if (val.format == '?') | |
221 | { | |
222 | if (val.size == '?') | |
223 | { | |
224 | /* Neither has been specified. */ | |
225 | val.format = oformat; | |
226 | val.size = osize; | |
227 | } | |
228 | else | |
229 | /* If a size is specified, any format makes a reasonable | |
230 | default except 'i'. */ | |
231 | val.format = oformat == 'i' ? 'x' : oformat; | |
232 | } | |
233 | else if (val.size == '?') | |
234 | switch (val.format) | |
235 | { | |
236 | case 'a': | |
5d3729b5 UW |
237 | /* Pick the appropriate size for an address. This is deferred |
238 | until do_examine when we know the actual architecture to use. | |
239 | A special size value of 'a' is used to indicate this case. */ | |
240 | val.size = osize ? 'a' : osize; | |
c906108c SS |
241 | break; |
242 | case 'f': | |
243 | /* Floating point has to be word or giantword. */ | |
244 | if (osize == 'w' || osize == 'g') | |
245 | val.size = osize; | |
246 | else | |
247 | /* Default it to giantword if the last used size is not | |
248 | appropriate. */ | |
249 | val.size = osize ? 'g' : osize; | |
250 | break; | |
251 | case 'c': | |
252 | /* Characters default to one byte. */ | |
253 | val.size = osize ? 'b' : osize; | |
254 | break; | |
9a22f0d0 | 255 | case 's': |
3e43a32a MS |
256 | /* Display strings with byte size chars unless explicitly |
257 | specified. */ | |
9a22f0d0 PM |
258 | val.size = '\0'; |
259 | break; | |
260 | ||
c906108c SS |
261 | default: |
262 | /* The default is the size most recently specified. */ | |
263 | val.size = osize; | |
264 | } | |
265 | ||
266 | return val; | |
267 | } | |
268 | \f | |
79a45b7d | 269 | /* Print value VAL on stream according to OPTIONS. |
c906108c | 270 | Do not end with a newline. |
c906108c | 271 | SIZE is the letter for the size of datum being printed. |
ea37ba09 DJ |
272 | This is used to pad hex numbers so they line up. SIZE is 0 |
273 | for print / output and set for examine. */ | |
c906108c SS |
274 | |
275 | static void | |
79a45b7d TT |
276 | print_formatted (struct value *val, int size, |
277 | const struct value_print_options *options, | |
fba45db2 | 278 | struct ui_file *stream) |
c906108c | 279 | { |
df407dfe | 280 | struct type *type = check_typedef (value_type (val)); |
c906108c SS |
281 | int len = TYPE_LENGTH (type); |
282 | ||
283 | if (VALUE_LVAL (val) == lval_memory) | |
42ae5230 | 284 | next_address = value_address (val) + len; |
c906108c | 285 | |
ea37ba09 | 286 | if (size) |
c906108c | 287 | { |
79a45b7d | 288 | switch (options->format) |
ea37ba09 DJ |
289 | { |
290 | case 's': | |
6c7a06a3 TT |
291 | { |
292 | struct type *elttype = value_type (val); | |
ad3bbd48 | 293 | |
42ae5230 | 294 | next_address = (value_address (val) |
09ca9e2e | 295 | + val_print_string (elttype, NULL, |
42ae5230 | 296 | value_address (val), -1, |
9a22f0d0 | 297 | stream, options) * len); |
6c7a06a3 | 298 | } |
ea37ba09 | 299 | return; |
c906108c | 300 | |
ea37ba09 DJ |
301 | case 'i': |
302 | /* We often wrap here if there are long symbolic names. */ | |
303 | wrap_here (" "); | |
42ae5230 | 304 | next_address = (value_address (val) |
13274fc3 UW |
305 | + gdb_print_insn (get_type_arch (type), |
306 | value_address (val), stream, | |
ea37ba09 DJ |
307 | &branch_delay_insns)); |
308 | return; | |
309 | } | |
c906108c | 310 | } |
ea37ba09 | 311 | |
79a45b7d | 312 | if (options->format == 0 || options->format == 's' |
4e885b20 | 313 | || TYPE_CODE (type) == TYPE_CODE_REF |
ea37ba09 DJ |
314 | || TYPE_CODE (type) == TYPE_CODE_ARRAY |
315 | || TYPE_CODE (type) == TYPE_CODE_STRING | |
316 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
317 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
318 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
79a45b7d | 319 | value_print (val, stream, options); |
ea37ba09 | 320 | else |
b021a221 MS |
321 | /* User specified format, so don't look to the type to tell us |
322 | what to do. */ | |
ab2188aa | 323 | val_print_scalar_formatted (type, |
ab2188aa PA |
324 | value_embedded_offset (val), |
325 | val, | |
326 | options, size, stream); | |
c906108c SS |
327 | } |
328 | ||
b806fb9a UW |
329 | /* Return builtin floating point type of same length as TYPE. |
330 | If no such type is found, return TYPE itself. */ | |
331 | static struct type * | |
50810684 | 332 | float_type_from_length (struct type *type) |
b806fb9a | 333 | { |
50810684 | 334 | struct gdbarch *gdbarch = get_type_arch (type); |
b806fb9a | 335 | const struct builtin_type *builtin = builtin_type (gdbarch); |
b806fb9a | 336 | |
744a8059 | 337 | if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_float)) |
b806fb9a | 338 | type = builtin->builtin_float; |
744a8059 | 339 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_double)) |
b806fb9a | 340 | type = builtin->builtin_double; |
744a8059 | 341 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_long_double)) |
b806fb9a UW |
342 | type = builtin->builtin_long_double; |
343 | ||
344 | return type; | |
345 | } | |
346 | ||
c906108c | 347 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, |
ab2188aa PA |
348 | according to OPTIONS and SIZE on STREAM. Formats s and i are not |
349 | supported at this level. */ | |
c906108c SS |
350 | |
351 | void | |
7c543f7b | 352 | print_scalar_formatted (const gdb_byte *valaddr, struct type *type, |
79a45b7d TT |
353 | const struct value_print_options *options, |
354 | int size, struct ui_file *stream) | |
c906108c | 355 | { |
50810684 | 356 | struct gdbarch *gdbarch = get_type_arch (type); |
c906108c | 357 | unsigned int len = TYPE_LENGTH (type); |
69feb676 | 358 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 359 | |
ab2188aa PA |
360 | /* String printing should go through val_print_scalar_formatted. */ |
361 | gdb_assert (options->format != 's'); | |
ea37ba09 | 362 | |
ef166cf4 | 363 | /* If the value is a pointer, and pointers and addresses are not the |
d0aee0c4 | 364 | same, then at this point, the value's length (in target bytes) is |
17a912b6 | 365 | gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */ |
ef166cf4 | 366 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
69feb676 | 367 | len = gdbarch_addr_bit (gdbarch) / TARGET_CHAR_BIT; |
ef166cf4 | 368 | |
c906108c SS |
369 | /* If we are printing it as unsigned, truncate it in case it is actually |
370 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
371 | (if shorts are 16 bits) instead of 4294967295). */ | |
d9109c80 TT |
372 | if (options->format != 'c' |
373 | && (options->format != 'd' || TYPE_UNSIGNED (type))) | |
c906108c | 374 | { |
d9109c80 TT |
375 | if (len < TYPE_LENGTH (type) && byte_order == BFD_ENDIAN_BIG) |
376 | valaddr += TYPE_LENGTH (type) - len; | |
c906108c SS |
377 | } |
378 | ||
d9109c80 | 379 | if (size != 0 && (options->format == 'x' || options->format == 't')) |
c906108c | 380 | { |
d9109c80 TT |
381 | /* Truncate to fit. */ |
382 | unsigned newlen; | |
383 | switch (size) | |
c906108c | 384 | { |
d9109c80 TT |
385 | case 'b': |
386 | newlen = 1; | |
387 | break; | |
388 | case 'h': | |
389 | newlen = 2; | |
390 | break; | |
391 | case 'w': | |
392 | newlen = 4; | |
393 | break; | |
394 | case 'g': | |
395 | newlen = 8; | |
396 | break; | |
397 | default: | |
398 | error (_("Undefined output size \"%c\"."), size); | |
c906108c | 399 | } |
d9109c80 TT |
400 | if (newlen < len && byte_order == BFD_ENDIAN_BIG) |
401 | valaddr += len - newlen; | |
402 | len = newlen; | |
403 | } | |
c906108c | 404 | |
d9109c80 TT |
405 | /* Historically gdb has printed floats by first casting them to a |
406 | long, and then printing the long. PR cli/16242 suggests changing | |
407 | this to using C-style hex float format. */ | |
d5722aa2 | 408 | gdb::byte_vector converted_float_bytes; |
d9109c80 TT |
409 | if (TYPE_CODE (type) == TYPE_CODE_FLT |
410 | && (options->format == 'o' | |
411 | || options->format == 'x' | |
412 | || options->format == 't' | |
d6382fff TT |
413 | || options->format == 'z' |
414 | || options->format == 'd' | |
415 | || options->format == 'u')) | |
d9109c80 TT |
416 | { |
417 | LONGEST val_long = unpack_long (type, valaddr); | |
418 | converted_float_bytes.resize (TYPE_LENGTH (type)); | |
419 | store_signed_integer (converted_float_bytes.data (), TYPE_LENGTH (type), | |
420 | byte_order, val_long); | |
421 | valaddr = converted_float_bytes.data (); | |
422 | } | |
c906108c | 423 | |
fdf0cbc2 UW |
424 | /* Printing a non-float type as 'f' will interpret the data as if it were |
425 | of a floating-point type of the same length, if that exists. Otherwise, | |
426 | the data is printed as integer. */ | |
427 | char format = options->format; | |
428 | if (format == 'f' && TYPE_CODE (type) != TYPE_CODE_FLT) | |
429 | { | |
430 | type = float_type_from_length (type); | |
431 | if (TYPE_CODE (type) != TYPE_CODE_FLT) | |
432 | format = 0; | |
433 | } | |
434 | ||
435 | switch (format) | |
d9109c80 TT |
436 | { |
437 | case 'o': | |
438 | print_octal_chars (stream, valaddr, len, byte_order); | |
439 | break; | |
d6382fff TT |
440 | case 'd': |
441 | print_decimal_chars (stream, valaddr, len, true, byte_order); | |
442 | break; | |
c906108c | 443 | case 'u': |
d9109c80 | 444 | print_decimal_chars (stream, valaddr, len, false, byte_order); |
c906108c | 445 | break; |
d9109c80 | 446 | case 0: |
d9109c80 TT |
447 | if (TYPE_CODE (type) != TYPE_CODE_FLT) |
448 | { | |
449 | print_decimal_chars (stream, valaddr, len, !TYPE_UNSIGNED (type), | |
450 | byte_order); | |
451 | break; | |
452 | } | |
453 | /* FALLTHROUGH */ | |
454 | case 'f': | |
d9109c80 | 455 | print_floating (valaddr, type, stream); |
c906108c SS |
456 | break; |
457 | ||
d9109c80 TT |
458 | case 't': |
459 | print_binary_chars (stream, valaddr, len, byte_order, size > 0); | |
460 | break; | |
461 | case 'x': | |
462 | print_hex_chars (stream, valaddr, len, byte_order, size > 0); | |
463 | break; | |
464 | case 'z': | |
465 | print_hex_chars (stream, valaddr, len, byte_order, true); | |
c906108c | 466 | break; |
c906108c | 467 | case 'c': |
79a45b7d TT |
468 | { |
469 | struct value_print_options opts = *options; | |
69feb676 | 470 | |
d9109c80 TT |
471 | LONGEST val_long = unpack_long (type, valaddr); |
472 | ||
ad3bbd48 | 473 | opts.format = 0; |
79a45b7d | 474 | if (TYPE_UNSIGNED (type)) |
69feb676 UW |
475 | type = builtin_type (gdbarch)->builtin_true_unsigned_char; |
476 | else | |
477 | type = builtin_type (gdbarch)->builtin_true_char; | |
478 | ||
479 | value_print (value_from_longest (type, val_long), stream, &opts); | |
79a45b7d | 480 | } |
c906108c SS |
481 | break; |
482 | ||
d9109c80 | 483 | case 'a': |
c906108c | 484 | { |
d9109c80 | 485 | CORE_ADDR addr = unpack_pointer (type, valaddr); |
c906108c | 486 | |
d9109c80 | 487 | print_address (gdbarch, addr, stream); |
c906108c SS |
488 | } |
489 | break; | |
490 | ||
491 | default: | |
fdf0cbc2 | 492 | error (_("Undefined output format \"%c\"."), format); |
c906108c SS |
493 | } |
494 | } | |
495 | ||
496 | /* Specify default address for `x' command. | |
675dcf4f | 497 | The `info lines' command uses this. */ |
c906108c SS |
498 | |
499 | void | |
8b9b9e1a | 500 | set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 501 | { |
8b9b9e1a UW |
502 | struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
503 | ||
5d3729b5 | 504 | next_gdbarch = gdbarch; |
c906108c SS |
505 | next_address = addr; |
506 | ||
507 | /* Make address available to the user as $_. */ | |
508 | set_internalvar (lookup_internalvar ("_"), | |
8b9b9e1a | 509 | value_from_pointer (ptr_type, addr)); |
c906108c SS |
510 | } |
511 | ||
512 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
513 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
514 | Optionally also print source file and line number, if available. | |
515 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
516 | or to interpret it as a possible C++ name and convert it back to source | |
517 | form. However note that DO_DEMANGLE can be overridden by the specific | |
9cb709b6 TT |
518 | settings of the demangle and asm_demangle variables. Returns |
519 | non-zero if anything was printed; zero otherwise. */ | |
c906108c | 520 | |
9cb709b6 | 521 | int |
22e722e1 DJ |
522 | print_address_symbolic (struct gdbarch *gdbarch, CORE_ADDR addr, |
523 | struct ui_file *stream, | |
a121b7c1 | 524 | int do_demangle, const char *leadin) |
dfcd3bfb | 525 | { |
c7110220 | 526 | std::string name, filename; |
dfcd3bfb JM |
527 | int unmapped = 0; |
528 | int offset = 0; | |
529 | int line = 0; | |
530 | ||
22e722e1 | 531 | if (build_address_symbolic (gdbarch, addr, do_demangle, &name, &offset, |
675dcf4f | 532 | &filename, &line, &unmapped)) |
c7110220 | 533 | return 0; |
dfcd3bfb JM |
534 | |
535 | fputs_filtered (leadin, stream); | |
536 | if (unmapped) | |
537 | fputs_filtered ("<*", stream); | |
538 | else | |
539 | fputs_filtered ("<", stream); | |
af79b68d | 540 | fputs_styled (name.c_str (), function_name_style.style (), stream); |
dfcd3bfb JM |
541 | if (offset != 0) |
542 | fprintf_filtered (stream, "+%u", (unsigned int) offset); | |
543 | ||
544 | /* Append source filename and line number if desired. Give specific | |
545 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
c7110220 | 546 | if (print_symbol_filename && !filename.empty ()) |
dfcd3bfb | 547 | { |
af79b68d TT |
548 | fputs_filtered (line == -1 ? " in " : " at ", stream); |
549 | fputs_styled (filename.c_str (), file_name_style.style (), stream); | |
dfcd3bfb | 550 | if (line != -1) |
af79b68d | 551 | fprintf_filtered (stream, ":%d", line); |
dfcd3bfb JM |
552 | } |
553 | if (unmapped) | |
554 | fputs_filtered ("*>", stream); | |
555 | else | |
556 | fputs_filtered (">", stream); | |
557 | ||
9cb709b6 | 558 | return 1; |
dfcd3bfb JM |
559 | } |
560 | ||
c7110220 TT |
561 | /* See valprint.h. */ |
562 | ||
dfcd3bfb | 563 | int |
22e722e1 DJ |
564 | build_address_symbolic (struct gdbarch *gdbarch, |
565 | CORE_ADDR addr, /* IN */ | |
dfcd3bfb | 566 | int do_demangle, /* IN */ |
c7110220 | 567 | std::string *name, /* OUT */ |
dfcd3bfb | 568 | int *offset, /* OUT */ |
c7110220 | 569 | std::string *filename, /* OUT */ |
dfcd3bfb JM |
570 | int *line, /* OUT */ |
571 | int *unmapped) /* OUT */ | |
c906108c | 572 | { |
77e371c0 | 573 | struct bound_minimal_symbol msymbol; |
c906108c | 574 | struct symbol *symbol; |
c906108c | 575 | CORE_ADDR name_location = 0; |
714835d5 | 576 | struct obj_section *section = NULL; |
0d5cff50 | 577 | const char *name_temp = ""; |
dfcd3bfb | 578 | |
89c83b10 | 579 | /* Let's say it is mapped (not unmapped). */ |
dfcd3bfb | 580 | *unmapped = 0; |
c906108c | 581 | |
dfcd3bfb | 582 | /* Determine if the address is in an overlay, and whether it is |
675dcf4f | 583 | mapped. */ |
c906108c SS |
584 | if (overlay_debugging) |
585 | { | |
586 | section = find_pc_overlay (addr); | |
587 | if (pc_in_unmapped_range (addr, section)) | |
588 | { | |
dfcd3bfb | 589 | *unmapped = 1; |
c906108c SS |
590 | addr = overlay_mapped_address (addr, section); |
591 | } | |
592 | } | |
593 | ||
c906108c SS |
594 | /* First try to find the address in the symbol table, then |
595 | in the minsyms. Take the closest one. */ | |
596 | ||
597 | /* This is defective in the sense that it only finds text symbols. So | |
598 | really this is kind of pointless--we should make sure that the | |
599 | minimal symbols have everything we need (by changing that we could | |
600 | save some memory, but for many debug format--ELF/DWARF or | |
601 | anything/stabs--it would be inconvenient to eliminate those minimal | |
602 | symbols anyway). */ | |
77e371c0 | 603 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section); |
c906108c SS |
604 | symbol = find_pc_sect_function (addr, section); |
605 | ||
606 | if (symbol) | |
607 | { | |
22e722e1 DJ |
608 | /* If this is a function (i.e. a code address), strip out any |
609 | non-address bits. For instance, display a pointer to the | |
610 | first instruction of a Thumb function as <function>; the | |
611 | second instruction will be <function+2>, even though the | |
612 | pointer is <function+3>. This matches the ISA behavior. */ | |
613 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
614 | ||
2b1ffcfd | 615 | name_location = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (symbol)); |
406fc7fb | 616 | if (do_demangle || asm_demangle) |
de5ad195 | 617 | name_temp = SYMBOL_PRINT_NAME (symbol); |
c906108c | 618 | else |
3567439c | 619 | name_temp = SYMBOL_LINKAGE_NAME (symbol); |
c906108c SS |
620 | } |
621 | ||
77e371c0 TT |
622 | if (msymbol.minsym != NULL |
623 | && MSYMBOL_HAS_SIZE (msymbol.minsym) | |
624 | && MSYMBOL_SIZE (msymbol.minsym) == 0 | |
625 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text | |
626 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text_gnu_ifunc | |
627 | && MSYMBOL_TYPE (msymbol.minsym) != mst_file_text) | |
628 | msymbol.minsym = NULL; | |
9cb709b6 | 629 | |
77e371c0 | 630 | if (msymbol.minsym != NULL) |
c906108c | 631 | { |
77e371c0 | 632 | if (BMSYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL) |
c906108c | 633 | { |
fe8400b4 WN |
634 | /* If this is a function (i.e. a code address), strip out any |
635 | non-address bits. For instance, display a pointer to the | |
636 | first instruction of a Thumb function as <function>; the | |
637 | second instruction will be <function+2>, even though the | |
638 | pointer is <function+3>. This matches the ISA behavior. */ | |
77e371c0 TT |
639 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_text |
640 | || MSYMBOL_TYPE (msymbol.minsym) == mst_text_gnu_ifunc | |
641 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_text | |
642 | || MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
fe8400b4 WN |
643 | addr = gdbarch_addr_bits_remove (gdbarch, addr); |
644 | ||
c906108c SS |
645 | /* The msymbol is closer to the address than the symbol; |
646 | use the msymbol instead. */ | |
647 | symbol = 0; | |
77e371c0 | 648 | name_location = BMSYMBOL_VALUE_ADDRESS (msymbol); |
406fc7fb | 649 | if (do_demangle || asm_demangle) |
77e371c0 | 650 | name_temp = MSYMBOL_PRINT_NAME (msymbol.minsym); |
c906108c | 651 | else |
77e371c0 | 652 | name_temp = MSYMBOL_LINKAGE_NAME (msymbol.minsym); |
c906108c SS |
653 | } |
654 | } | |
77e371c0 | 655 | if (symbol == NULL && msymbol.minsym == NULL) |
dfcd3bfb | 656 | return 1; |
c906108c | 657 | |
c906108c SS |
658 | /* If the nearest symbol is too far away, don't print anything symbolic. */ |
659 | ||
660 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
661 | CORE_ADDR. But when we detect unsigned wraparound in the | |
662 | CORE_ADDR math, we ignore this test and print the offset, | |
663 | because addr+max_symbolic_offset has wrapped through the end | |
664 | of the address space back to the beginning, giving bogus comparison. */ | |
665 | if (addr > name_location + max_symbolic_offset | |
666 | && name_location + max_symbolic_offset > name_location) | |
dfcd3bfb | 667 | return 1; |
c906108c | 668 | |
dfcd3bfb JM |
669 | *offset = addr - name_location; |
670 | ||
c7110220 | 671 | *name = name_temp; |
c906108c | 672 | |
c906108c SS |
673 | if (print_symbol_filename) |
674 | { | |
675 | struct symtab_and_line sal; | |
676 | ||
677 | sal = find_pc_sect_line (addr, section, 0); | |
678 | ||
679 | if (sal.symtab) | |
dfcd3bfb | 680 | { |
c7110220 | 681 | *filename = symtab_to_filename_for_display (sal.symtab); |
dfcd3bfb JM |
682 | *line = sal.line; |
683 | } | |
c906108c | 684 | } |
dfcd3bfb | 685 | return 0; |
c906108c SS |
686 | } |
687 | ||
c906108c SS |
688 | |
689 | /* Print address ADDR symbolically on STREAM. | |
690 | First print it as a number. Then perhaps print | |
691 | <SYMBOL + OFFSET> after the number. */ | |
692 | ||
693 | void | |
5af949e3 UW |
694 | print_address (struct gdbarch *gdbarch, |
695 | CORE_ADDR addr, struct ui_file *stream) | |
c906108c | 696 | { |
35fb8261 | 697 | fputs_styled (paddress (gdbarch, addr), address_style.style (), stream); |
22e722e1 | 698 | print_address_symbolic (gdbarch, addr, stream, asm_demangle, " "); |
c906108c SS |
699 | } |
700 | ||
2b28d209 PP |
701 | /* Return a prefix for instruction address: |
702 | "=> " for current instruction, else " ". */ | |
703 | ||
704 | const char * | |
705 | pc_prefix (CORE_ADDR addr) | |
706 | { | |
707 | if (has_stack_frames ()) | |
708 | { | |
709 | struct frame_info *frame; | |
710 | CORE_ADDR pc; | |
711 | ||
712 | frame = get_selected_frame (NULL); | |
ce406537 | 713 | if (get_frame_pc_if_available (frame, &pc) && pc == addr) |
2b28d209 PP |
714 | return "=> "; |
715 | } | |
716 | return " "; | |
717 | } | |
718 | ||
c906108c SS |
719 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE |
720 | controls whether to print the symbolic name "raw" or demangled. | |
9cb709b6 | 721 | Return non-zero if anything was printed; zero otherwise. */ |
c906108c | 722 | |
9cb709b6 | 723 | int |
edf0c1b7 TT |
724 | print_address_demangle (const struct value_print_options *opts, |
725 | struct gdbarch *gdbarch, CORE_ADDR addr, | |
5af949e3 | 726 | struct ui_file *stream, int do_demangle) |
c906108c | 727 | { |
1d51a733 | 728 | if (opts->addressprint) |
c906108c | 729 | { |
35fb8261 | 730 | fputs_styled (paddress (gdbarch, addr), address_style.style (), stream); |
22e722e1 | 731 | print_address_symbolic (gdbarch, addr, stream, do_demangle, " "); |
c906108c SS |
732 | } |
733 | else | |
734 | { | |
9cb709b6 | 735 | return print_address_symbolic (gdbarch, addr, stream, do_demangle, ""); |
c906108c | 736 | } |
9cb709b6 | 737 | return 1; |
c906108c SS |
738 | } |
739 | \f | |
740 | ||
bb556f1f TK |
741 | /* Find the address of the instruction that is INST_COUNT instructions before |
742 | the instruction at ADDR. | |
743 | Since some architectures have variable-length instructions, we can't just | |
744 | simply subtract INST_COUNT * INSN_LEN from ADDR. Instead, we use line | |
745 | number information to locate the nearest known instruction boundary, | |
746 | and disassemble forward from there. If we go out of the symbol range | |
747 | during disassembling, we return the lowest address we've got so far and | |
748 | set the number of instructions read to INST_READ. */ | |
749 | ||
750 | static CORE_ADDR | |
751 | find_instruction_backward (struct gdbarch *gdbarch, CORE_ADDR addr, | |
752 | int inst_count, int *inst_read) | |
753 | { | |
754 | /* The vector PCS is used to store instruction addresses within | |
755 | a pc range. */ | |
756 | CORE_ADDR loop_start, loop_end, p; | |
52d214d3 | 757 | std::vector<CORE_ADDR> pcs; |
bb556f1f | 758 | struct symtab_and_line sal; |
bb556f1f TK |
759 | |
760 | *inst_read = 0; | |
761 | loop_start = loop_end = addr; | |
762 | ||
763 | /* In each iteration of the outer loop, we get a pc range that ends before | |
764 | LOOP_START, then we count and store every instruction address of the range | |
765 | iterated in the loop. | |
766 | If the number of instructions counted reaches INST_COUNT, return the | |
767 | stored address that is located INST_COUNT instructions back from ADDR. | |
768 | If INST_COUNT is not reached, we subtract the number of counted | |
769 | instructions from INST_COUNT, and go to the next iteration. */ | |
770 | do | |
771 | { | |
52d214d3 | 772 | pcs.clear (); |
bb556f1f TK |
773 | sal = find_pc_sect_line (loop_start, NULL, 1); |
774 | if (sal.line <= 0) | |
775 | { | |
776 | /* We reach here when line info is not available. In this case, | |
777 | we print a message and just exit the loop. The return value | |
778 | is calculated after the loop. */ | |
779 | printf_filtered (_("No line number information available " | |
780 | "for address ")); | |
781 | wrap_here (" "); | |
782 | print_address (gdbarch, loop_start - 1, gdb_stdout); | |
783 | printf_filtered ("\n"); | |
784 | break; | |
785 | } | |
786 | ||
787 | loop_end = loop_start; | |
788 | loop_start = sal.pc; | |
789 | ||
790 | /* This loop pushes instruction addresses in the range from | |
791 | LOOP_START to LOOP_END. */ | |
792 | for (p = loop_start; p < loop_end;) | |
793 | { | |
52d214d3 | 794 | pcs.push_back (p); |
bb556f1f TK |
795 | p += gdb_insn_length (gdbarch, p); |
796 | } | |
797 | ||
52d214d3 TT |
798 | inst_count -= pcs.size (); |
799 | *inst_read += pcs.size (); | |
bb556f1f TK |
800 | } |
801 | while (inst_count > 0); | |
802 | ||
803 | /* After the loop, the vector PCS has instruction addresses of the last | |
804 | source line we processed, and INST_COUNT has a negative value. | |
805 | We return the address at the index of -INST_COUNT in the vector for | |
806 | the reason below. | |
807 | Let's assume the following instruction addresses and run 'x/-4i 0x400e'. | |
808 | Line X of File | |
809 | 0x4000 | |
810 | 0x4001 | |
811 | 0x4005 | |
812 | Line Y of File | |
813 | 0x4009 | |
814 | 0x400c | |
815 | => 0x400e | |
816 | 0x4011 | |
817 | find_instruction_backward is called with INST_COUNT = 4 and expected to | |
818 | return 0x4001. When we reach here, INST_COUNT is set to -1 because | |
819 | it was subtracted by 2 (from Line Y) and 3 (from Line X). The value | |
820 | 4001 is located at the index 1 of the last iterated line (= Line X), | |
821 | which is simply calculated by -INST_COUNT. | |
822 | The case when the length of PCS is 0 means that we reached an area for | |
823 | which line info is not available. In such case, we return LOOP_START, | |
824 | which was the lowest instruction address that had line info. */ | |
52d214d3 | 825 | p = pcs.size () > 0 ? pcs[-inst_count] : loop_start; |
bb556f1f TK |
826 | |
827 | /* INST_READ includes all instruction addresses in a pc range. Need to | |
828 | exclude the beginning part up to the address we're returning. That | |
829 | is, exclude {0x4000} in the example above. */ | |
830 | if (inst_count < 0) | |
831 | *inst_read += inst_count; | |
832 | ||
bb556f1f TK |
833 | return p; |
834 | } | |
835 | ||
836 | /* Backward read LEN bytes of target memory from address MEMADDR + LEN, | |
837 | placing the results in GDB's memory from MYADDR + LEN. Returns | |
838 | a count of the bytes actually read. */ | |
839 | ||
840 | static int | |
841 | read_memory_backward (struct gdbarch *gdbarch, | |
842 | CORE_ADDR memaddr, gdb_byte *myaddr, int len) | |
843 | { | |
844 | int errcode; | |
845 | int nread; /* Number of bytes actually read. */ | |
846 | ||
847 | /* First try a complete read. */ | |
848 | errcode = target_read_memory (memaddr, myaddr, len); | |
849 | if (errcode == 0) | |
850 | { | |
851 | /* Got it all. */ | |
852 | nread = len; | |
853 | } | |
854 | else | |
855 | { | |
856 | /* Loop, reading one byte at a time until we get as much as we can. */ | |
857 | memaddr += len; | |
858 | myaddr += len; | |
859 | for (nread = 0; nread < len; ++nread) | |
860 | { | |
861 | errcode = target_read_memory (--memaddr, --myaddr, 1); | |
862 | if (errcode != 0) | |
863 | { | |
864 | /* The read was unsuccessful, so exit the loop. */ | |
865 | printf_filtered (_("Cannot access memory at address %s\n"), | |
866 | paddress (gdbarch, memaddr)); | |
867 | break; | |
868 | } | |
869 | } | |
870 | } | |
871 | return nread; | |
872 | } | |
873 | ||
874 | /* Returns true if X (which is LEN bytes wide) is the number zero. */ | |
875 | ||
876 | static int | |
877 | integer_is_zero (const gdb_byte *x, int len) | |
878 | { | |
879 | int i = 0; | |
880 | ||
881 | while (i < len && x[i] == 0) | |
882 | ++i; | |
883 | return (i == len); | |
884 | } | |
885 | ||
886 | /* Find the start address of a string in which ADDR is included. | |
887 | Basically we search for '\0' and return the next address, | |
888 | but if OPTIONS->PRINT_MAX is smaller than the length of a string, | |
889 | we stop searching and return the address to print characters as many as | |
890 | PRINT_MAX from the string. */ | |
891 | ||
892 | static CORE_ADDR | |
893 | find_string_backward (struct gdbarch *gdbarch, | |
894 | CORE_ADDR addr, int count, int char_size, | |
895 | const struct value_print_options *options, | |
896 | int *strings_counted) | |
897 | { | |
898 | const int chunk_size = 0x20; | |
bb556f1f TK |
899 | int read_error = 0; |
900 | int chars_read = 0; | |
901 | int chars_to_read = chunk_size; | |
902 | int chars_counted = 0; | |
903 | int count_original = count; | |
904 | CORE_ADDR string_start_addr = addr; | |
905 | ||
906 | gdb_assert (char_size == 1 || char_size == 2 || char_size == 4); | |
26fcd5d7 | 907 | gdb::byte_vector buffer (chars_to_read * char_size); |
bb556f1f TK |
908 | while (count > 0 && read_error == 0) |
909 | { | |
910 | int i; | |
911 | ||
912 | addr -= chars_to_read * char_size; | |
26fcd5d7 | 913 | chars_read = read_memory_backward (gdbarch, addr, buffer.data (), |
bb556f1f TK |
914 | chars_to_read * char_size); |
915 | chars_read /= char_size; | |
916 | read_error = (chars_read == chars_to_read) ? 0 : 1; | |
917 | /* Searching for '\0' from the end of buffer in backward direction. */ | |
918 | for (i = 0; i < chars_read && count > 0 ; ++i, ++chars_counted) | |
919 | { | |
920 | int offset = (chars_to_read - i - 1) * char_size; | |
921 | ||
26fcd5d7 | 922 | if (integer_is_zero (&buffer[offset], char_size) |
bb556f1f TK |
923 | || chars_counted == options->print_max) |
924 | { | |
925 | /* Found '\0' or reached print_max. As OFFSET is the offset to | |
926 | '\0', we add CHAR_SIZE to return the start address of | |
927 | a string. */ | |
928 | --count; | |
929 | string_start_addr = addr + offset + char_size; | |
930 | chars_counted = 0; | |
931 | } | |
932 | } | |
933 | } | |
934 | ||
935 | /* Update STRINGS_COUNTED with the actual number of loaded strings. */ | |
936 | *strings_counted = count_original - count; | |
937 | ||
938 | if (read_error != 0) | |
939 | { | |
940 | /* In error case, STRING_START_ADDR is pointing to the string that | |
941 | was last successfully loaded. Rewind the partially loaded string. */ | |
942 | string_start_addr -= chars_counted * char_size; | |
943 | } | |
944 | ||
bb556f1f TK |
945 | return string_start_addr; |
946 | } | |
947 | ||
c906108c SS |
948 | /* Examine data at address ADDR in format FMT. |
949 | Fetch it from memory and print on gdb_stdout. */ | |
950 | ||
951 | static void | |
5d3729b5 | 952 | do_examine (struct format_data fmt, struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 953 | { |
52f0bd74 AC |
954 | char format = 0; |
955 | char size; | |
956 | int count = 1; | |
c906108c | 957 | struct type *val_type = NULL; |
52f0bd74 AC |
958 | int i; |
959 | int maxelts; | |
79a45b7d | 960 | struct value_print_options opts; |
bb556f1f TK |
961 | int need_to_update_next_address = 0; |
962 | CORE_ADDR addr_rewound = 0; | |
c906108c SS |
963 | |
964 | format = fmt.format; | |
965 | size = fmt.size; | |
966 | count = fmt.count; | |
5d3729b5 | 967 | next_gdbarch = gdbarch; |
c906108c | 968 | next_address = addr; |
c906108c | 969 | |
9a22f0d0 PM |
970 | /* Instruction format implies fetch single bytes |
971 | regardless of the specified size. | |
972 | The case of strings is handled in decode_format, only explicit | |
973 | size operator are not changed to 'b'. */ | |
974 | if (format == 'i') | |
c906108c SS |
975 | size = 'b'; |
976 | ||
5d3729b5 UW |
977 | if (size == 'a') |
978 | { | |
979 | /* Pick the appropriate size for an address. */ | |
980 | if (gdbarch_ptr_bit (next_gdbarch) == 64) | |
981 | size = 'g'; | |
982 | else if (gdbarch_ptr_bit (next_gdbarch) == 32) | |
983 | size = 'w'; | |
984 | else if (gdbarch_ptr_bit (next_gdbarch) == 16) | |
985 | size = 'h'; | |
986 | else | |
987 | /* Bad value for gdbarch_ptr_bit. */ | |
988 | internal_error (__FILE__, __LINE__, | |
989 | _("failed internal consistency check")); | |
990 | } | |
991 | ||
992 | if (size == 'b') | |
df4df182 | 993 | val_type = builtin_type (next_gdbarch)->builtin_int8; |
c906108c | 994 | else if (size == 'h') |
df4df182 | 995 | val_type = builtin_type (next_gdbarch)->builtin_int16; |
c906108c | 996 | else if (size == 'w') |
df4df182 | 997 | val_type = builtin_type (next_gdbarch)->builtin_int32; |
c906108c | 998 | else if (size == 'g') |
df4df182 | 999 | val_type = builtin_type (next_gdbarch)->builtin_int64; |
c906108c | 1000 | |
9a22f0d0 PM |
1001 | if (format == 's') |
1002 | { | |
1003 | struct type *char_type = NULL; | |
ad3bbd48 | 1004 | |
9a22f0d0 PM |
1005 | /* Search for "char16_t" or "char32_t" types or fall back to 8-bit char |
1006 | if type is not found. */ | |
1007 | if (size == 'h') | |
1008 | char_type = builtin_type (next_gdbarch)->builtin_char16; | |
1009 | else if (size == 'w') | |
1010 | char_type = builtin_type (next_gdbarch)->builtin_char32; | |
1011 | if (char_type) | |
1012 | val_type = char_type; | |
1013 | else | |
1014 | { | |
1015 | if (size != '\0' && size != 'b') | |
0df8b418 MS |
1016 | warning (_("Unable to display strings with " |
1017 | "size '%c', using 'b' instead."), size); | |
9a22f0d0 PM |
1018 | size = 'b'; |
1019 | val_type = builtin_type (next_gdbarch)->builtin_int8; | |
1020 | } | |
1021 | } | |
1022 | ||
c906108c SS |
1023 | maxelts = 8; |
1024 | if (size == 'w') | |
1025 | maxelts = 4; | |
1026 | if (size == 'g') | |
1027 | maxelts = 2; | |
1028 | if (format == 's' || format == 'i') | |
1029 | maxelts = 1; | |
1030 | ||
79a45b7d TT |
1031 | get_formatted_print_options (&opts, format); |
1032 | ||
bb556f1f TK |
1033 | if (count < 0) |
1034 | { | |
1035 | /* This is the negative repeat count case. | |
1036 | We rewind the address based on the given repeat count and format, | |
1037 | then examine memory from there in forward direction. */ | |
1038 | ||
1039 | count = -count; | |
1040 | if (format == 'i') | |
1041 | { | |
1042 | next_address = find_instruction_backward (gdbarch, addr, count, | |
1043 | &count); | |
1044 | } | |
1045 | else if (format == 's') | |
1046 | { | |
1047 | next_address = find_string_backward (gdbarch, addr, count, | |
1048 | TYPE_LENGTH (val_type), | |
1049 | &opts, &count); | |
1050 | } | |
1051 | else | |
1052 | { | |
1053 | next_address = addr - count * TYPE_LENGTH (val_type); | |
1054 | } | |
1055 | ||
1056 | /* The following call to print_formatted updates next_address in every | |
1057 | iteration. In backward case, we store the start address here | |
1058 | and update next_address with it before exiting the function. */ | |
1059 | addr_rewound = (format == 's' | |
1060 | ? next_address - TYPE_LENGTH (val_type) | |
1061 | : next_address); | |
1062 | need_to_update_next_address = 1; | |
1063 | } | |
1064 | ||
c906108c SS |
1065 | /* Print as many objects as specified in COUNT, at most maxelts per line, |
1066 | with the address of the next one at the start of each line. */ | |
1067 | ||
1068 | while (count > 0) | |
1069 | { | |
1070 | QUIT; | |
2b28d209 PP |
1071 | if (format == 'i') |
1072 | fputs_filtered (pc_prefix (next_address), gdb_stdout); | |
5af949e3 | 1073 | print_address (next_gdbarch, next_address, gdb_stdout); |
c906108c SS |
1074 | printf_filtered (":"); |
1075 | for (i = maxelts; | |
1076 | i > 0 && count > 0; | |
1077 | i--, count--) | |
1078 | { | |
1079 | printf_filtered ("\t"); | |
1080 | /* Note that print_formatted sets next_address for the next | |
1081 | object. */ | |
1082 | last_examine_address = next_address; | |
1083 | ||
c906108c | 1084 | /* The value to be displayed is not fetched greedily. |
5d51a2db MR |
1085 | Instead, to avoid the possibility of a fetched value not |
1086 | being used, its retrieval is delayed until the print code | |
c5aa993b JM |
1087 | uses it. When examining an instruction stream, the |
1088 | disassembler will perform its own memory fetch using just | |
1089 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
1090 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
1091 | is left with the byte sequence from the last complete | |
0df8b418 | 1092 | instruction fetched from memory? */ |
9b558729 TT |
1093 | last_examine_value |
1094 | = release_value (value_at_lazy (val_type, next_address)); | |
c906108c | 1095 | |
9b558729 | 1096 | print_formatted (last_examine_value.get (), size, &opts, gdb_stdout); |
a4642986 MR |
1097 | |
1098 | /* Display any branch delay slots following the final insn. */ | |
1099 | if (format == 'i' && count == 1) | |
1100 | count += branch_delay_insns; | |
c906108c SS |
1101 | } |
1102 | printf_filtered ("\n"); | |
c906108c | 1103 | } |
bb556f1f TK |
1104 | |
1105 | if (need_to_update_next_address) | |
1106 | next_address = addr_rewound; | |
c906108c SS |
1107 | } |
1108 | \f | |
1109 | static void | |
8d89f51a | 1110 | validate_format (struct format_data fmt, const char *cmdname) |
c906108c SS |
1111 | { |
1112 | if (fmt.size != 0) | |
8a3fe4f8 | 1113 | error (_("Size letters are meaningless in \"%s\" command."), cmdname); |
c906108c | 1114 | if (fmt.count != 1) |
8a3fe4f8 | 1115 | error (_("Item count other than 1 is meaningless in \"%s\" command."), |
c906108c | 1116 | cmdname); |
ea37ba09 | 1117 | if (fmt.format == 'i') |
8a3fe4f8 | 1118 | error (_("Format letter \"%c\" is meaningless in \"%s\" command."), |
c906108c SS |
1119 | fmt.format, cmdname); |
1120 | } | |
1121 | ||
7d8062de | 1122 | /* Parse print command format string into *OPTS and update *EXPP. |
1c88ceb1 JK |
1123 | CMDNAME should name the current command. */ |
1124 | ||
1125 | void | |
1126 | print_command_parse_format (const char **expp, const char *cmdname, | |
7d8062de | 1127 | value_print_options *opts) |
1c88ceb1 JK |
1128 | { |
1129 | const char *exp = *expp; | |
1130 | ||
1131 | if (exp && *exp == '/') | |
1132 | { | |
7d8062de PA |
1133 | format_data fmt; |
1134 | ||
1c88ceb1 | 1135 | exp++; |
7d8062de PA |
1136 | fmt = decode_format (&exp, last_format, 0); |
1137 | validate_format (fmt, cmdname); | |
1138 | last_format = fmt.format; | |
1139 | ||
1140 | opts->format = fmt.format; | |
1141 | opts->raw = fmt.raw; | |
1c88ceb1 JK |
1142 | } |
1143 | else | |
1144 | { | |
7d8062de PA |
1145 | opts->format = 0; |
1146 | opts->raw = 0; | |
1c88ceb1 JK |
1147 | } |
1148 | ||
1149 | *expp = exp; | |
1150 | } | |
1151 | ||
7d8062de | 1152 | /* See valprint.h. */ |
1c88ceb1 JK |
1153 | |
1154 | void | |
7d8062de | 1155 | print_value (value *val, const value_print_options &opts) |
1c88ceb1 | 1156 | { |
1c88ceb1 JK |
1157 | int histindex = record_latest_value (val); |
1158 | ||
1159 | annotate_value_history_begin (histindex, value_type (val)); | |
1160 | ||
1161 | printf_filtered ("$%d = ", histindex); | |
1162 | ||
1163 | annotate_value_history_value (); | |
1164 | ||
7d8062de | 1165 | print_formatted (val, 0, &opts, gdb_stdout); |
1c88ceb1 JK |
1166 | printf_filtered ("\n"); |
1167 | ||
1168 | annotate_value_history_end (); | |
1169 | } | |
1170 | ||
7d8062de | 1171 | /* Implementation of the "print" and "call" commands. */ |
c906108c SS |
1172 | |
1173 | static void | |
7d8062de | 1174 | print_command_1 (const char *args, int voidprint) |
c906108c | 1175 | { |
3d6d86c6 | 1176 | struct value *val; |
7d8062de PA |
1177 | value_print_options print_opts; |
1178 | ||
1179 | get_user_print_options (&print_opts); | |
1180 | /* Override global settings with explicit options, if any. */ | |
1181 | auto group = make_value_print_options_def_group (&print_opts); | |
1182 | gdb::option::process_options | |
1183 | (&args, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group); | |
1184 | ||
1185 | print_command_parse_format (&args, "print", &print_opts); | |
c906108c | 1186 | |
7d8062de | 1187 | const char *exp = args; |
c906108c | 1188 | |
7d8062de | 1189 | if (exp != nullptr && *exp) |
c906108c | 1190 | { |
4d01a485 PA |
1191 | expression_up expr = parse_expression (exp); |
1192 | val = evaluate_expression (expr.get ()); | |
c906108c SS |
1193 | } |
1194 | else | |
1195 | val = access_value_history (0); | |
1196 | ||
df407dfe AC |
1197 | if (voidprint || (val && value_type (val) && |
1198 | TYPE_CODE (value_type (val)) != TYPE_CODE_VOID)) | |
7d8062de PA |
1199 | print_value (val, print_opts); |
1200 | } | |
1201 | ||
1202 | /* See valprint.h. */ | |
1203 | ||
1204 | void | |
1205 | print_command_completer (struct cmd_list_element *ignore, | |
1206 | completion_tracker &tracker, | |
1207 | const char *text, const char * /*word*/) | |
1208 | { | |
1209 | const auto group = make_value_print_options_def_group (nullptr); | |
1210 | if (gdb::option::complete_options | |
1211 | (tracker, &text, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group)) | |
1212 | return; | |
1213 | ||
1214 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
1215 | expression_completer (ignore, tracker, text, word); | |
c906108c SS |
1216 | } |
1217 | ||
c906108c | 1218 | static void |
0b39b52e | 1219 | print_command (const char *exp, int from_tty) |
c906108c | 1220 | { |
e93a8774 | 1221 | print_command_1 (exp, 1); |
c906108c SS |
1222 | } |
1223 | ||
675dcf4f | 1224 | /* Same as print, except it doesn't print void results. */ |
c906108c | 1225 | static void |
0b39b52e | 1226 | call_command (const char *exp, int from_tty) |
c906108c | 1227 | { |
e93a8774 | 1228 | print_command_1 (exp, 0); |
c906108c SS |
1229 | } |
1230 | ||
6f937416 PA |
1231 | /* Implementation of the "output" command. */ |
1232 | ||
6f937416 | 1233 | void |
122b53ea | 1234 | output_command (const char *exp, int from_tty) |
c906108c | 1235 | { |
52f0bd74 | 1236 | char format = 0; |
3d6d86c6 | 1237 | struct value *val; |
c906108c | 1238 | struct format_data fmt; |
79a45b7d | 1239 | struct value_print_options opts; |
c906108c | 1240 | |
777ea8f1 | 1241 | fmt.size = 0; |
a6bac58e | 1242 | fmt.raw = 0; |
777ea8f1 | 1243 | |
c906108c SS |
1244 | if (exp && *exp == '/') |
1245 | { | |
1246 | exp++; | |
1247 | fmt = decode_format (&exp, 0, 0); | |
1248 | validate_format (fmt, "output"); | |
1249 | format = fmt.format; | |
1250 | } | |
1251 | ||
4d01a485 | 1252 | expression_up expr = parse_expression (exp); |
c906108c | 1253 | |
4d01a485 | 1254 | val = evaluate_expression (expr.get ()); |
c906108c | 1255 | |
df407dfe | 1256 | annotate_value_begin (value_type (val)); |
c906108c | 1257 | |
79a45b7d | 1258 | get_formatted_print_options (&opts, format); |
a6bac58e | 1259 | opts.raw = fmt.raw; |
79a45b7d | 1260 | print_formatted (val, fmt.size, &opts, gdb_stdout); |
c906108c SS |
1261 | |
1262 | annotate_value_end (); | |
1263 | ||
2acceee2 JM |
1264 | wrap_here (""); |
1265 | gdb_flush (gdb_stdout); | |
c906108c SS |
1266 | } |
1267 | ||
c906108c | 1268 | static void |
981a3fb3 | 1269 | set_command (const char *exp, int from_tty) |
c906108c | 1270 | { |
4d01a485 | 1271 | expression_up expr = parse_expression (exp); |
ad3bbd48 | 1272 | |
0ece64fd TG |
1273 | if (expr->nelts >= 1) |
1274 | switch (expr->elts[0].opcode) | |
1275 | { | |
1276 | case UNOP_PREINCREMENT: | |
1277 | case UNOP_POSTINCREMENT: | |
1278 | case UNOP_PREDECREMENT: | |
1279 | case UNOP_POSTDECREMENT: | |
1280 | case BINOP_ASSIGN: | |
1281 | case BINOP_ASSIGN_MODIFY: | |
1282 | case BINOP_COMMA: | |
1283 | break; | |
1284 | default: | |
1285 | warning | |
1286 | (_("Expression is not an assignment (and might have no effect)")); | |
1287 | } | |
52b3699b | 1288 | |
4d01a485 | 1289 | evaluate_expression (expr.get ()); |
c906108c SS |
1290 | } |
1291 | ||
c906108c | 1292 | static void |
1d12d88f | 1293 | info_symbol_command (const char *arg, int from_tty) |
c906108c SS |
1294 | { |
1295 | struct minimal_symbol *msymbol; | |
c5aa993b | 1296 | struct obj_section *osect; |
c5aa993b JM |
1297 | CORE_ADDR addr, sect_addr; |
1298 | int matches = 0; | |
1299 | unsigned int offset; | |
c906108c SS |
1300 | |
1301 | if (!arg) | |
e2e0b3e5 | 1302 | error_no_arg (_("address")); |
c906108c SS |
1303 | |
1304 | addr = parse_and_eval_address (arg); | |
2030c079 | 1305 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 | 1306 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
c5aa993b | 1307 | { |
3b9d3ac2 TT |
1308 | /* Only process each object file once, even if there's a separate |
1309 | debug file. */ | |
1310 | if (objfile->separate_debug_objfile_backlink) | |
1311 | continue; | |
1312 | ||
1313 | sect_addr = overlay_mapped_address (addr, osect); | |
1314 | ||
1315 | if (obj_section_addr (osect) <= sect_addr | |
1316 | && sect_addr < obj_section_endaddr (osect) | |
1317 | && (msymbol | |
1318 | = lookup_minimal_symbol_by_pc_section (sect_addr, | |
1319 | osect).minsym)) | |
5178ed48 | 1320 | { |
3b9d3ac2 TT |
1321 | const char *obj_name, *mapped, *sec_name, *msym_name; |
1322 | const char *loc_string; | |
1323 | ||
1324 | matches = 1; | |
1325 | offset = sect_addr - MSYMBOL_VALUE_ADDRESS (objfile, msymbol); | |
1326 | mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped"); | |
1327 | sec_name = osect->the_bfd_section->name; | |
1328 | msym_name = MSYMBOL_PRINT_NAME (msymbol); | |
1329 | ||
1330 | /* Don't print the offset if it is zero. | |
1331 | We assume there's no need to handle i18n of "sym + offset". */ | |
1332 | std::string string_holder; | |
1333 | if (offset) | |
1334 | { | |
1335 | string_holder = string_printf ("%s + %u", msym_name, offset); | |
1336 | loc_string = string_holder.c_str (); | |
1337 | } | |
c14c28ba | 1338 | else |
3b9d3ac2 TT |
1339 | loc_string = msym_name; |
1340 | ||
1341 | gdb_assert (osect->objfile && objfile_name (osect->objfile)); | |
1342 | obj_name = objfile_name (osect->objfile); | |
1343 | ||
1344 | if (MULTI_OBJFILE_P ()) | |
1345 | if (pc_in_unmapped_range (addr, osect)) | |
1346 | if (section_is_overlay (osect)) | |
1347 | printf_filtered (_("%s in load address range of " | |
1348 | "%s overlay section %s of %s\n"), | |
1349 | loc_string, mapped, sec_name, obj_name); | |
1350 | else | |
1351 | printf_filtered (_("%s in load address range of " | |
1352 | "section %s of %s\n"), | |
1353 | loc_string, sec_name, obj_name); | |
1354 | else | |
1355 | if (section_is_overlay (osect)) | |
1356 | printf_filtered (_("%s in %s overlay section %s of %s\n"), | |
1357 | loc_string, mapped, sec_name, obj_name); | |
1358 | else | |
1359 | printf_filtered (_("%s in section %s of %s\n"), | |
1360 | loc_string, sec_name, obj_name); | |
c14c28ba | 1361 | else |
3b9d3ac2 TT |
1362 | if (pc_in_unmapped_range (addr, osect)) |
1363 | if (section_is_overlay (osect)) | |
1364 | printf_filtered (_("%s in load address range of %s overlay " | |
1365 | "section %s\n"), | |
1366 | loc_string, mapped, sec_name); | |
1367 | else | |
1368 | printf_filtered | |
1369 | (_("%s in load address range of section %s\n"), | |
1370 | loc_string, sec_name); | |
1371 | else | |
1372 | if (section_is_overlay (osect)) | |
1373 | printf_filtered (_("%s in %s overlay section %s\n"), | |
1374 | loc_string, mapped, sec_name); | |
1375 | else | |
1376 | printf_filtered (_("%s in section %s\n"), | |
1377 | loc_string, sec_name); | |
1378 | } | |
c5aa993b | 1379 | } |
c906108c | 1380 | if (matches == 0) |
a3f17187 | 1381 | printf_filtered (_("No symbol matches %s.\n"), arg); |
c906108c SS |
1382 | } |
1383 | ||
c906108c | 1384 | static void |
1d12d88f | 1385 | info_address_command (const char *exp, int from_tty) |
c906108c | 1386 | { |
768a979c UW |
1387 | struct gdbarch *gdbarch; |
1388 | int regno; | |
52f0bd74 | 1389 | struct symbol *sym; |
7c7b6655 | 1390 | struct bound_minimal_symbol msymbol; |
52f0bd74 | 1391 | long val; |
714835d5 | 1392 | struct obj_section *section; |
08922a10 | 1393 | CORE_ADDR load_addr, context_pc = 0; |
1993b719 | 1394 | struct field_of_this_result is_a_field_of_this; |
c906108c SS |
1395 | |
1396 | if (exp == 0) | |
8a3fe4f8 | 1397 | error (_("Argument required.")); |
c906108c | 1398 | |
08922a10 | 1399 | sym = lookup_symbol (exp, get_selected_block (&context_pc), VAR_DOMAIN, |
d12307c1 | 1400 | &is_a_field_of_this).symbol; |
c906108c SS |
1401 | if (sym == NULL) |
1402 | { | |
1993b719 | 1403 | if (is_a_field_of_this.type != NULL) |
c906108c SS |
1404 | { |
1405 | printf_filtered ("Symbol \""); | |
1406 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1407 | current_language->la_language, DMGL_ANSI); | |
e2b23ee9 AF |
1408 | printf_filtered ("\" is a field of the local class variable "); |
1409 | if (current_language->la_language == language_objc) | |
2625d86c | 1410 | printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */ |
e2b23ee9 | 1411 | else |
2625d86c | 1412 | printf_filtered ("`this'\n"); |
c906108c SS |
1413 | return; |
1414 | } | |
1415 | ||
7c7b6655 | 1416 | msymbol = lookup_bound_minimal_symbol (exp); |
c906108c | 1417 | |
7c7b6655 | 1418 | if (msymbol.minsym != NULL) |
c906108c | 1419 | { |
7c7b6655 | 1420 | struct objfile *objfile = msymbol.objfile; |
e27d198c TT |
1421 | |
1422 | gdbarch = get_objfile_arch (objfile); | |
77e371c0 | 1423 | load_addr = BMSYMBOL_VALUE_ADDRESS (msymbol); |
c906108c SS |
1424 | |
1425 | printf_filtered ("Symbol \""); | |
1426 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1427 | current_language->la_language, DMGL_ANSI); | |
1428 | printf_filtered ("\" is at "); | |
35fb8261 TT |
1429 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1430 | gdb_stdout); | |
c906108c | 1431 | printf_filtered (" in a file compiled without debugging"); |
efd66ac6 | 1432 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
c906108c SS |
1433 | if (section_is_overlay (section)) |
1434 | { | |
1435 | load_addr = overlay_unmapped_address (load_addr, section); | |
1436 | printf_filtered (",\n -- loaded at "); | |
35fb8261 TT |
1437 | fputs_styled (paddress (gdbarch, load_addr), |
1438 | address_style.style (), | |
1439 | gdb_stdout); | |
714835d5 UW |
1440 | printf_filtered (" in overlay section %s", |
1441 | section->the_bfd_section->name); | |
c906108c SS |
1442 | } |
1443 | printf_filtered (".\n"); | |
1444 | } | |
1445 | else | |
8a3fe4f8 | 1446 | error (_("No symbol \"%s\" in current context."), exp); |
c906108c SS |
1447 | return; |
1448 | } | |
1449 | ||
1450 | printf_filtered ("Symbol \""); | |
3567439c | 1451 | fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym), |
c906108c SS |
1452 | current_language->la_language, DMGL_ANSI); |
1453 | printf_filtered ("\" is "); | |
c5aa993b | 1454 | val = SYMBOL_VALUE (sym); |
1994afbf DE |
1455 | if (SYMBOL_OBJFILE_OWNED (sym)) |
1456 | section = SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym); | |
1457 | else | |
1458 | section = NULL; | |
08be3fe3 | 1459 | gdbarch = symbol_arch (sym); |
c906108c | 1460 | |
24d6c2a0 TT |
1461 | if (SYMBOL_COMPUTED_OPS (sym) != NULL) |
1462 | { | |
1463 | SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, context_pc, | |
1464 | gdb_stdout); | |
1465 | printf_filtered (".\n"); | |
1466 | return; | |
1467 | } | |
1468 | ||
c906108c SS |
1469 | switch (SYMBOL_CLASS (sym)) |
1470 | { | |
1471 | case LOC_CONST: | |
1472 | case LOC_CONST_BYTES: | |
1473 | printf_filtered ("constant"); | |
1474 | break; | |
1475 | ||
1476 | case LOC_LABEL: | |
1477 | printf_filtered ("a label at address "); | |
5af949e3 | 1478 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
35fb8261 TT |
1479 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1480 | gdb_stdout); | |
c906108c SS |
1481 | if (section_is_overlay (section)) |
1482 | { | |
1483 | load_addr = overlay_unmapped_address (load_addr, section); | |
1484 | printf_filtered (",\n -- loaded at "); | |
35fb8261 TT |
1485 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1486 | gdb_stdout); | |
714835d5 UW |
1487 | printf_filtered (" in overlay section %s", |
1488 | section->the_bfd_section->name); | |
c906108c SS |
1489 | } |
1490 | break; | |
1491 | ||
4c2df51b | 1492 | case LOC_COMPUTED: |
24d6c2a0 | 1493 | gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method")); |
4c2df51b | 1494 | |
c906108c | 1495 | case LOC_REGISTER: |
768a979c UW |
1496 | /* GDBARCH is the architecture associated with the objfile the symbol |
1497 | is defined in; the target architecture may be different, and may | |
1498 | provide additional registers. However, we do not know the target | |
1499 | architecture at this point. We assume the objfile architecture | |
1500 | will contain all the standard registers that occur in debug info | |
1501 | in that objfile. */ | |
1502 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
1503 | ||
2a2d4dc3 AS |
1504 | if (SYMBOL_IS_ARGUMENT (sym)) |
1505 | printf_filtered (_("an argument in register %s"), | |
768a979c | 1506 | gdbarch_register_name (gdbarch, regno)); |
2a2d4dc3 AS |
1507 | else |
1508 | printf_filtered (_("a variable in register %s"), | |
768a979c | 1509 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1510 | break; |
1511 | ||
1512 | case LOC_STATIC: | |
a3f17187 | 1513 | printf_filtered (_("static storage at address ")); |
5af949e3 | 1514 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
35fb8261 TT |
1515 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1516 | gdb_stdout); | |
c906108c SS |
1517 | if (section_is_overlay (section)) |
1518 | { | |
1519 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1520 | printf_filtered (_(",\n -- loaded at ")); |
35fb8261 TT |
1521 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1522 | gdb_stdout); | |
714835d5 UW |
1523 | printf_filtered (_(" in overlay section %s"), |
1524 | section->the_bfd_section->name); | |
c906108c SS |
1525 | } |
1526 | break; | |
1527 | ||
c906108c | 1528 | case LOC_REGPARM_ADDR: |
768a979c UW |
1529 | /* Note comment at LOC_REGISTER. */ |
1530 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
675dcf4f | 1531 | printf_filtered (_("address of an argument in register %s"), |
768a979c | 1532 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1533 | break; |
1534 | ||
1535 | case LOC_ARG: | |
a3f17187 | 1536 | printf_filtered (_("an argument at offset %ld"), val); |
c906108c SS |
1537 | break; |
1538 | ||
c906108c | 1539 | case LOC_LOCAL: |
a3f17187 | 1540 | printf_filtered (_("a local variable at frame offset %ld"), val); |
c906108c SS |
1541 | break; |
1542 | ||
1543 | case LOC_REF_ARG: | |
a3f17187 | 1544 | printf_filtered (_("a reference argument at offset %ld"), val); |
c906108c SS |
1545 | break; |
1546 | ||
c906108c | 1547 | case LOC_TYPEDEF: |
a3f17187 | 1548 | printf_filtered (_("a typedef")); |
c906108c SS |
1549 | break; |
1550 | ||
1551 | case LOC_BLOCK: | |
a3f17187 | 1552 | printf_filtered (_("a function at address ")); |
2b1ffcfd | 1553 | load_addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
35fb8261 TT |
1554 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1555 | gdb_stdout); | |
c906108c SS |
1556 | if (section_is_overlay (section)) |
1557 | { | |
1558 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1559 | printf_filtered (_(",\n -- loaded at ")); |
35fb8261 TT |
1560 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1561 | gdb_stdout); | |
714835d5 UW |
1562 | printf_filtered (_(" in overlay section %s"), |
1563 | section->the_bfd_section->name); | |
c906108c SS |
1564 | } |
1565 | break; | |
1566 | ||
1567 | case LOC_UNRESOLVED: | |
1568 | { | |
e27d198c | 1569 | struct bound_minimal_symbol msym; |
c906108c | 1570 | |
64cc34d8 | 1571 | msym = lookup_bound_minimal_symbol (SYMBOL_LINKAGE_NAME (sym)); |
e27d198c | 1572 | if (msym.minsym == NULL) |
c906108c SS |
1573 | printf_filtered ("unresolved"); |
1574 | else | |
1575 | { | |
efd66ac6 | 1576 | section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
e0740f77 JK |
1577 | |
1578 | if (section | |
1579 | && (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0) | |
5382cfab PW |
1580 | { |
1581 | load_addr = MSYMBOL_VALUE_RAW_ADDRESS (msym.minsym); | |
1582 | printf_filtered (_("a thread-local variable at offset %s " | |
1583 | "in the thread-local storage for `%s'"), | |
1584 | paddress (gdbarch, load_addr), | |
1585 | objfile_name (section->objfile)); | |
1586 | } | |
e0740f77 | 1587 | else |
c906108c | 1588 | { |
5382cfab | 1589 | load_addr = BMSYMBOL_VALUE_ADDRESS (msym); |
e0740f77 | 1590 | printf_filtered (_("static storage at address ")); |
35fb8261 TT |
1591 | fputs_styled (paddress (gdbarch, load_addr), |
1592 | address_style.style (), gdb_stdout); | |
e0740f77 JK |
1593 | if (section_is_overlay (section)) |
1594 | { | |
1595 | load_addr = overlay_unmapped_address (load_addr, section); | |
1596 | printf_filtered (_(",\n -- loaded at ")); | |
35fb8261 TT |
1597 | fputs_styled (paddress (gdbarch, load_addr), |
1598 | address_style.style (), | |
1599 | gdb_stdout); | |
e0740f77 JK |
1600 | printf_filtered (_(" in overlay section %s"), |
1601 | section->the_bfd_section->name); | |
1602 | } | |
c906108c SS |
1603 | } |
1604 | } | |
1605 | } | |
1606 | break; | |
1607 | ||
c906108c | 1608 | case LOC_OPTIMIZED_OUT: |
a3f17187 | 1609 | printf_filtered (_("optimized out")); |
c906108c | 1610 | break; |
c5aa993b | 1611 | |
c906108c | 1612 | default: |
a3f17187 | 1613 | printf_filtered (_("of unknown (botched) type")); |
c906108c SS |
1614 | break; |
1615 | } | |
1616 | printf_filtered (".\n"); | |
1617 | } | |
1618 | \f | |
675dcf4f MK |
1619 | |
1620 | static void | |
0b39b52e | 1621 | x_command (const char *exp, int from_tty) |
c906108c | 1622 | { |
c906108c | 1623 | struct format_data fmt; |
c906108c SS |
1624 | struct value *val; |
1625 | ||
a6bac58e | 1626 | fmt.format = last_format ? last_format : 'x'; |
c906108c SS |
1627 | fmt.size = last_size; |
1628 | fmt.count = 1; | |
a6bac58e | 1629 | fmt.raw = 0; |
c906108c | 1630 | |
9be2ae8f TT |
1631 | /* If there is no expression and no format, use the most recent |
1632 | count. */ | |
1633 | if (exp == nullptr && last_count > 0) | |
1634 | fmt.count = last_count; | |
1635 | ||
c906108c SS |
1636 | if (exp && *exp == '/') |
1637 | { | |
6f937416 PA |
1638 | const char *tmp = exp + 1; |
1639 | ||
1640 | fmt = decode_format (&tmp, last_format, last_size); | |
1641 | exp = (char *) tmp; | |
c906108c SS |
1642 | } |
1643 | ||
9be2ae8f TT |
1644 | last_count = fmt.count; |
1645 | ||
c906108c SS |
1646 | /* If we have an expression, evaluate it and use it as the address. */ |
1647 | ||
1648 | if (exp != 0 && *exp != 0) | |
1649 | { | |
4d01a485 | 1650 | expression_up expr = parse_expression (exp); |
675dcf4f MK |
1651 | /* Cause expression not to be there any more if this command is |
1652 | repeated with Newline. But don't clobber a user-defined | |
1653 | command's definition. */ | |
c906108c | 1654 | if (from_tty) |
85c4be7c | 1655 | set_repeat_arguments (""); |
4d01a485 | 1656 | val = evaluate_expression (expr.get ()); |
aa006118 | 1657 | if (TYPE_IS_REFERENCE (value_type (val))) |
e1c34c5d | 1658 | val = coerce_ref (val); |
c906108c | 1659 | /* In rvalue contexts, such as this, functions are coerced into |
c5aa993b | 1660 | pointers to functions. This makes "x/i main" work. */ |
c0d8fd9a | 1661 | if (/* last_format == 'i' && */ |
df407dfe | 1662 | TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC |
c5aa993b | 1663 | && VALUE_LVAL (val) == lval_memory) |
42ae5230 | 1664 | next_address = value_address (val); |
c906108c | 1665 | else |
1aa20aa8 | 1666 | next_address = value_as_address (val); |
5d3729b5 UW |
1667 | |
1668 | next_gdbarch = expr->gdbarch; | |
c906108c SS |
1669 | } |
1670 | ||
5d3729b5 UW |
1671 | if (!next_gdbarch) |
1672 | error_no_arg (_("starting display address")); | |
1673 | ||
1674 | do_examine (fmt, next_gdbarch, next_address); | |
c906108c | 1675 | |
675dcf4f | 1676 | /* If the examine succeeds, we remember its size and format for next |
9a22f0d0 PM |
1677 | time. Set last_size to 'b' for strings. */ |
1678 | if (fmt.format == 's') | |
1679 | last_size = 'b'; | |
1680 | else | |
1681 | last_size = fmt.size; | |
c906108c SS |
1682 | last_format = fmt.format; |
1683 | ||
0df8b418 | 1684 | /* Set a couple of internal variables if appropriate. */ |
9b558729 | 1685 | if (last_examine_value != nullptr) |
c906108c SS |
1686 | { |
1687 | /* Make last address examined available to the user as $_. Use | |
c5aa993b | 1688 | the correct pointer type. */ |
4478b372 | 1689 | struct type *pointer_type |
9b558729 | 1690 | = lookup_pointer_type (value_type (last_examine_value.get ())); |
c906108c | 1691 | set_internalvar (lookup_internalvar ("_"), |
4478b372 JB |
1692 | value_from_pointer (pointer_type, |
1693 | last_examine_address)); | |
c5aa993b | 1694 | |
675dcf4f MK |
1695 | /* Make contents of last address examined available to the user |
1696 | as $__. If the last value has not been fetched from memory | |
1697 | then don't fetch it now; instead mark it by voiding the $__ | |
1698 | variable. */ | |
9b558729 | 1699 | if (value_lazy (last_examine_value.get ())) |
4fa62494 | 1700 | clear_internalvar (lookup_internalvar ("__")); |
c906108c | 1701 | else |
9b558729 | 1702 | set_internalvar (lookup_internalvar ("__"), last_examine_value.get ()); |
c906108c SS |
1703 | } |
1704 | } | |
c906108c | 1705 | \f |
c5aa993b | 1706 | |
c906108c SS |
1707 | /* Add an expression to the auto-display chain. |
1708 | Specify the expression. */ | |
1709 | ||
1710 | static void | |
0b39b52e | 1711 | display_command (const char *arg, int from_tty) |
c906108c SS |
1712 | { |
1713 | struct format_data fmt; | |
fe978cb0 | 1714 | struct display *newobj; |
6f937416 | 1715 | const char *exp = arg; |
c906108c | 1716 | |
7bd0be3a | 1717 | if (exp == 0) |
c906108c | 1718 | { |
7bd0be3a AB |
1719 | do_displays (); |
1720 | return; | |
1721 | } | |
c906108c | 1722 | |
7bd0be3a AB |
1723 | if (*exp == '/') |
1724 | { | |
1725 | exp++; | |
1726 | fmt = decode_format (&exp, 0, 0); | |
1727 | if (fmt.size && fmt.format == 0) | |
1728 | fmt.format = 'x'; | |
1729 | if (fmt.format == 'i' || fmt.format == 's') | |
1730 | fmt.size = 'b'; | |
1731 | } | |
1732 | else | |
1733 | { | |
1734 | fmt.format = 0; | |
1735 | fmt.size = 0; | |
1736 | fmt.count = 0; | |
1737 | fmt.raw = 0; | |
1738 | } | |
c906108c | 1739 | |
699bd4cf TT |
1740 | innermost_block_tracker tracker; |
1741 | expression_up expr = parse_expression (exp, &tracker); | |
c906108c | 1742 | |
4d01a485 | 1743 | newobj = new display (); |
c906108c | 1744 | |
7bd0be3a | 1745 | newobj->exp_string = xstrdup (exp); |
b22e99fd | 1746 | newobj->exp = std::move (expr); |
699bd4cf | 1747 | newobj->block = tracker.block (); |
7bd0be3a | 1748 | newobj->pspace = current_program_space; |
7bd0be3a AB |
1749 | newobj->number = ++display_number; |
1750 | newobj->format = fmt; | |
1751 | newobj->enabled_p = 1; | |
62147a22 PA |
1752 | newobj->next = NULL; |
1753 | ||
1754 | if (display_chain == NULL) | |
1755 | display_chain = newobj; | |
1756 | else | |
1757 | { | |
1758 | struct display *last; | |
1759 | ||
1760 | for (last = display_chain; last->next != NULL; last = last->next) | |
1761 | ; | |
1762 | last->next = newobj; | |
1763 | } | |
c906108c | 1764 | |
7bd0be3a AB |
1765 | if (from_tty) |
1766 | do_one_display (newobj); | |
c906108c | 1767 | |
7bd0be3a | 1768 | dont_repeat (); |
c906108c SS |
1769 | } |
1770 | ||
1771 | static void | |
fba45db2 | 1772 | free_display (struct display *d) |
c906108c | 1773 | { |
fa8a61dc | 1774 | xfree (d->exp_string); |
4d01a485 | 1775 | delete d; |
c906108c SS |
1776 | } |
1777 | ||
675dcf4f MK |
1778 | /* Clear out the display_chain. Done when new symtabs are loaded, |
1779 | since this invalidates the types stored in many expressions. */ | |
c906108c SS |
1780 | |
1781 | void | |
fba45db2 | 1782 | clear_displays (void) |
c906108c | 1783 | { |
52f0bd74 | 1784 | struct display *d; |
c906108c SS |
1785 | |
1786 | while ((d = display_chain) != NULL) | |
1787 | { | |
c906108c | 1788 | display_chain = d->next; |
fa8a61dc | 1789 | free_display (d); |
c906108c SS |
1790 | } |
1791 | } | |
1792 | ||
3c3fe74c | 1793 | /* Delete the auto-display DISPLAY. */ |
c906108c SS |
1794 | |
1795 | static void | |
3c3fe74c | 1796 | delete_display (struct display *display) |
c906108c | 1797 | { |
3c3fe74c | 1798 | struct display *d; |
c906108c | 1799 | |
3c3fe74c | 1800 | gdb_assert (display != NULL); |
c906108c | 1801 | |
3c3fe74c PA |
1802 | if (display_chain == display) |
1803 | display_chain = display->next; | |
1804 | ||
1805 | ALL_DISPLAYS (d) | |
1806 | if (d->next == display) | |
c906108c | 1807 | { |
3c3fe74c PA |
1808 | d->next = display->next; |
1809 | break; | |
c906108c | 1810 | } |
3c3fe74c PA |
1811 | |
1812 | free_display (display); | |
c906108c SS |
1813 | } |
1814 | ||
c9174737 PA |
1815 | /* Call FUNCTION on each of the displays whose numbers are given in |
1816 | ARGS. DATA is passed unmodified to FUNCTION. */ | |
c906108c SS |
1817 | |
1818 | static void | |
77763700 | 1819 | map_display_numbers (const char *args, |
c9174737 PA |
1820 | void (*function) (struct display *, |
1821 | void *), | |
1822 | void *data) | |
c906108c | 1823 | { |
c9174737 | 1824 | int num; |
c906108c | 1825 | |
c9174737 PA |
1826 | if (args == NULL) |
1827 | error_no_arg (_("one or more display numbers")); | |
c906108c | 1828 | |
bfd28288 | 1829 | number_or_range_parser parser (args); |
c9174737 | 1830 | |
bfd28288 | 1831 | while (!parser.finished ()) |
c906108c | 1832 | { |
bfd28288 | 1833 | const char *p = parser.cur_tok (); |
c906108c | 1834 | |
bfd28288 | 1835 | num = parser.get_number (); |
3c3fe74c PA |
1836 | if (num == 0) |
1837 | warning (_("bad display number at or near '%s'"), p); | |
1838 | else | |
1839 | { | |
c9174737 | 1840 | struct display *d, *tmp; |
c906108c | 1841 | |
c9174737 | 1842 | ALL_DISPLAYS_SAFE (d, tmp) |
3c3fe74c PA |
1843 | if (d->number == num) |
1844 | break; | |
1845 | if (d == NULL) | |
1846 | printf_unfiltered (_("No display number %d.\n"), num); | |
1847 | else | |
c9174737 | 1848 | function (d, data); |
3c3fe74c | 1849 | } |
c906108c | 1850 | } |
c9174737 PA |
1851 | } |
1852 | ||
1853 | /* Callback for map_display_numbers, that deletes a display. */ | |
1854 | ||
1855 | static void | |
1856 | do_delete_display (struct display *d, void *data) | |
1857 | { | |
1858 | delete_display (d); | |
1859 | } | |
1860 | ||
1861 | /* "undisplay" command. */ | |
1862 | ||
1863 | static void | |
77763700 | 1864 | undisplay_command (const char *args, int from_tty) |
c9174737 | 1865 | { |
c9174737 PA |
1866 | if (args == NULL) |
1867 | { | |
1868 | if (query (_("Delete all auto-display expressions? "))) | |
1869 | clear_displays (); | |
1870 | dont_repeat (); | |
1871 | return; | |
1872 | } | |
1873 | ||
1874 | map_display_numbers (args, do_delete_display, NULL); | |
c906108c SS |
1875 | dont_repeat (); |
1876 | } | |
1877 | ||
1878 | /* Display a single auto-display. | |
1879 | Do nothing if the display cannot be printed in the current context, | |
0df8b418 | 1880 | or if the display is disabled. */ |
c906108c SS |
1881 | |
1882 | static void | |
fba45db2 | 1883 | do_one_display (struct display *d) |
c906108c SS |
1884 | { |
1885 | int within_current_scope; | |
1886 | ||
b5de0fa7 | 1887 | if (d->enabled_p == 0) |
c906108c SS |
1888 | return; |
1889 | ||
704e9165 UW |
1890 | /* The expression carries the architecture that was used at parse time. |
1891 | This is a problem if the expression depends on architecture features | |
1892 | (e.g. register numbers), and the current architecture is now different. | |
1893 | For example, a display statement like "display/i $pc" is expected to | |
1894 | display the PC register of the current architecture, not the arch at | |
1895 | the time the display command was given. Therefore, we re-parse the | |
1896 | expression if the current architecture has changed. */ | |
1897 | if (d->exp != NULL && d->exp->gdbarch != get_current_arch ()) | |
1898 | { | |
4d01a485 | 1899 | d->exp.reset (); |
704e9165 UW |
1900 | d->block = NULL; |
1901 | } | |
1902 | ||
a3247a22 PP |
1903 | if (d->exp == NULL) |
1904 | { | |
ad3bbd48 | 1905 | |
a70b8144 | 1906 | try |
a3247a22 | 1907 | { |
699bd4cf TT |
1908 | innermost_block_tracker tracker; |
1909 | d->exp = parse_expression (d->exp_string, &tracker); | |
1910 | d->block = tracker.block (); | |
a3247a22 | 1911 | } |
230d2906 | 1912 | catch (const gdb_exception &ex) |
a3247a22 PP |
1913 | { |
1914 | /* Can't re-parse the expression. Disable this display item. */ | |
1915 | d->enabled_p = 0; | |
1916 | warning (_("Unable to display \"%s\": %s"), | |
3d6e9d23 | 1917 | d->exp_string, ex.what ()); |
a3247a22 PP |
1918 | return; |
1919 | } | |
1920 | } | |
1921 | ||
c906108c | 1922 | if (d->block) |
6c95b8df PA |
1923 | { |
1924 | if (d->pspace == current_program_space) | |
1925 | within_current_scope = contained_in (get_selected_block (0), d->block); | |
1926 | else | |
1927 | within_current_scope = 0; | |
1928 | } | |
c906108c SS |
1929 | else |
1930 | within_current_scope = 1; | |
1931 | if (!within_current_scope) | |
1932 | return; | |
1933 | ||
b7b633e9 TT |
1934 | scoped_restore save_display_number |
1935 | = make_scoped_restore (¤t_display_number, d->number); | |
c906108c SS |
1936 | |
1937 | annotate_display_begin (); | |
1938 | printf_filtered ("%d", d->number); | |
1939 | annotate_display_number_end (); | |
1940 | printf_filtered (": "); | |
1941 | if (d->format.size) | |
1942 | { | |
c906108c SS |
1943 | |
1944 | annotate_display_format (); | |
1945 | ||
1946 | printf_filtered ("x/"); | |
1947 | if (d->format.count != 1) | |
1948 | printf_filtered ("%d", d->format.count); | |
1949 | printf_filtered ("%c", d->format.format); | |
1950 | if (d->format.format != 'i' && d->format.format != 's') | |
1951 | printf_filtered ("%c", d->format.size); | |
1952 | printf_filtered (" "); | |
1953 | ||
1954 | annotate_display_expression (); | |
1955 | ||
fa8a61dc | 1956 | puts_filtered (d->exp_string); |
c906108c SS |
1957 | annotate_display_expression_end (); |
1958 | ||
6a2eb474 | 1959 | if (d->format.count != 1 || d->format.format == 'i') |
c906108c SS |
1960 | printf_filtered ("\n"); |
1961 | else | |
1962 | printf_filtered (" "); | |
c5aa993b | 1963 | |
c906108c SS |
1964 | annotate_display_value (); |
1965 | ||
a70b8144 | 1966 | try |
9d8fa392 PA |
1967 | { |
1968 | struct value *val; | |
1969 | CORE_ADDR addr; | |
1970 | ||
4d01a485 | 1971 | val = evaluate_expression (d->exp.get ()); |
9d8fa392 PA |
1972 | addr = value_as_address (val); |
1973 | if (d->format.format == 'i') | |
1974 | addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr); | |
1975 | do_examine (d->format, d->exp->gdbarch, addr); | |
1976 | } | |
230d2906 | 1977 | catch (const gdb_exception_error &ex) |
492d29ea | 1978 | { |
3d6e9d23 TT |
1979 | fprintf_filtered (gdb_stdout, _("<error: %s>\n"), |
1980 | ex.what ()); | |
492d29ea | 1981 | } |
c906108c SS |
1982 | } |
1983 | else | |
1984 | { | |
79a45b7d TT |
1985 | struct value_print_options opts; |
1986 | ||
c906108c SS |
1987 | annotate_display_format (); |
1988 | ||
1989 | if (d->format.format) | |
1990 | printf_filtered ("/%c ", d->format.format); | |
1991 | ||
1992 | annotate_display_expression (); | |
1993 | ||
fa8a61dc | 1994 | puts_filtered (d->exp_string); |
c906108c SS |
1995 | annotate_display_expression_end (); |
1996 | ||
1997 | printf_filtered (" = "); | |
1998 | ||
1999 | annotate_display_expression (); | |
2000 | ||
79a45b7d | 2001 | get_formatted_print_options (&opts, d->format.format); |
a6bac58e | 2002 | opts.raw = d->format.raw; |
9d8fa392 | 2003 | |
a70b8144 | 2004 | try |
9d8fa392 PA |
2005 | { |
2006 | struct value *val; | |
2007 | ||
4d01a485 | 2008 | val = evaluate_expression (d->exp.get ()); |
9d8fa392 PA |
2009 | print_formatted (val, d->format.size, &opts, gdb_stdout); |
2010 | } | |
230d2906 | 2011 | catch (const gdb_exception_error &ex) |
492d29ea | 2012 | { |
3d6e9d23 | 2013 | fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.what ()); |
492d29ea | 2014 | } |
492d29ea | 2015 | |
c906108c SS |
2016 | printf_filtered ("\n"); |
2017 | } | |
2018 | ||
2019 | annotate_display_end (); | |
2020 | ||
2021 | gdb_flush (gdb_stdout); | |
c906108c SS |
2022 | } |
2023 | ||
2024 | /* Display all of the values on the auto-display chain which can be | |
2025 | evaluated in the current scope. */ | |
2026 | ||
2027 | void | |
fba45db2 | 2028 | do_displays (void) |
c906108c | 2029 | { |
52f0bd74 | 2030 | struct display *d; |
c906108c SS |
2031 | |
2032 | for (d = display_chain; d; d = d->next) | |
2033 | do_one_display (d); | |
2034 | } | |
2035 | ||
2036 | /* Delete the auto-display which we were in the process of displaying. | |
2037 | This is done when there is an error or a signal. */ | |
2038 | ||
2039 | void | |
fba45db2 | 2040 | disable_display (int num) |
c906108c | 2041 | { |
52f0bd74 | 2042 | struct display *d; |
c906108c SS |
2043 | |
2044 | for (d = display_chain; d; d = d->next) | |
2045 | if (d->number == num) | |
2046 | { | |
b5de0fa7 | 2047 | d->enabled_p = 0; |
c906108c SS |
2048 | return; |
2049 | } | |
a3f17187 | 2050 | printf_unfiltered (_("No display number %d.\n"), num); |
c906108c | 2051 | } |
c5aa993b | 2052 | |
c906108c | 2053 | void |
fba45db2 | 2054 | disable_current_display (void) |
c906108c SS |
2055 | { |
2056 | if (current_display_number >= 0) | |
2057 | { | |
2058 | disable_display (current_display_number); | |
3e43a32a MS |
2059 | fprintf_unfiltered (gdb_stderr, |
2060 | _("Disabling display %d to " | |
2061 | "avoid infinite recursion.\n"), | |
c5aa993b | 2062 | current_display_number); |
c906108c SS |
2063 | } |
2064 | current_display_number = -1; | |
2065 | } | |
2066 | ||
2067 | static void | |
1d12d88f | 2068 | info_display_command (const char *ignore, int from_tty) |
c906108c | 2069 | { |
52f0bd74 | 2070 | struct display *d; |
c906108c SS |
2071 | |
2072 | if (!display_chain) | |
a3f17187 | 2073 | printf_unfiltered (_("There are no auto-display expressions now.\n")); |
c906108c | 2074 | else |
a3f17187 AC |
2075 | printf_filtered (_("Auto-display expressions now in effect:\n\ |
2076 | Num Enb Expression\n")); | |
c906108c SS |
2077 | |
2078 | for (d = display_chain; d; d = d->next) | |
2079 | { | |
b5de0fa7 | 2080 | printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]); |
c906108c SS |
2081 | if (d->format.size) |
2082 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
c5aa993b | 2083 | d->format.format); |
c906108c SS |
2084 | else if (d->format.format) |
2085 | printf_filtered ("/%c ", d->format.format); | |
fa8a61dc | 2086 | puts_filtered (d->exp_string); |
ae767bfb | 2087 | if (d->block && !contained_in (get_selected_block (0), d->block)) |
a3f17187 | 2088 | printf_filtered (_(" (cannot be evaluated in the current context)")); |
c906108c | 2089 | printf_filtered ("\n"); |
c906108c SS |
2090 | } |
2091 | } | |
2092 | ||
c9174737 PA |
2093 | /* Callback fo map_display_numbers, that enables or disables the |
2094 | passed in display D. */ | |
2095 | ||
c906108c | 2096 | static void |
c9174737 | 2097 | do_enable_disable_display (struct display *d, void *data) |
c906108c | 2098 | { |
c9174737 PA |
2099 | d->enabled_p = *(int *) data; |
2100 | } | |
c906108c | 2101 | |
c9174737 PA |
2102 | /* Implamentation of both the "disable display" and "enable display" |
2103 | commands. ENABLE decides what to do. */ | |
2104 | ||
2105 | static void | |
77763700 | 2106 | enable_disable_display_command (const char *args, int from_tty, int enable) |
c9174737 PA |
2107 | { |
2108 | if (args == NULL) | |
c906108c | 2109 | { |
c9174737 | 2110 | struct display *d; |
c5aa993b | 2111 | |
c9174737 PA |
2112 | ALL_DISPLAYS (d) |
2113 | d->enabled_p = enable; | |
2114 | return; | |
2115 | } | |
c5aa993b | 2116 | |
c9174737 | 2117 | map_display_numbers (args, do_enable_disable_display, &enable); |
c906108c SS |
2118 | } |
2119 | ||
c9174737 PA |
2120 | /* The "enable display" command. */ |
2121 | ||
c906108c | 2122 | static void |
77763700 | 2123 | enable_display_command (const char *args, int from_tty) |
c906108c | 2124 | { |
c9174737 PA |
2125 | enable_disable_display_command (args, from_tty, 1); |
2126 | } | |
c5aa993b | 2127 | |
c9174737 | 2128 | /* The "disable display" command. */ |
c906108c | 2129 | |
c9174737 | 2130 | static void |
77763700 | 2131 | disable_display_command (const char *args, int from_tty) |
c9174737 PA |
2132 | { |
2133 | enable_disable_display_command (args, from_tty, 0); | |
c906108c | 2134 | } |
a3247a22 | 2135 | |
a3247a22 PP |
2136 | /* display_chain items point to blocks and expressions. Some expressions in |
2137 | turn may point to symbols. | |
2138 | Both symbols and blocks are obstack_alloc'd on objfile_stack, and are | |
2139 | obstack_free'd when a shared library is unloaded. | |
2140 | Clear pointers that are about to become dangling. | |
2141 | Both .exp and .block fields will be restored next time we need to display | |
2142 | an item by re-parsing .exp_string field in the new execution context. */ | |
2143 | ||
2144 | static void | |
63644780 | 2145 | clear_dangling_display_expressions (struct objfile *objfile) |
a3247a22 PP |
2146 | { |
2147 | struct display *d; | |
63644780 | 2148 | struct program_space *pspace; |
a3247a22 | 2149 | |
c0201579 JK |
2150 | /* With no symbol file we cannot have a block or expression from it. */ |
2151 | if (objfile == NULL) | |
2152 | return; | |
63644780 | 2153 | pspace = objfile->pspace; |
c0201579 | 2154 | if (objfile->separate_debug_objfile_backlink) |
63644780 NB |
2155 | { |
2156 | objfile = objfile->separate_debug_objfile_backlink; | |
2157 | gdb_assert (objfile->pspace == pspace); | |
2158 | } | |
c0201579 JK |
2159 | |
2160 | for (d = display_chain; d != NULL; d = d->next) | |
a3247a22 | 2161 | { |
63644780 | 2162 | if (d->pspace != pspace) |
c0201579 JK |
2163 | continue; |
2164 | ||
2165 | if (lookup_objfile_from_block (d->block) == objfile | |
4d01a485 | 2166 | || (d->exp != NULL && exp_uses_objfile (d->exp.get (), objfile))) |
c0201579 | 2167 | { |
4d01a485 | 2168 | d->exp.reset (); |
c0201579 JK |
2169 | d->block = NULL; |
2170 | } | |
a3247a22 PP |
2171 | } |
2172 | } | |
c906108c | 2173 | \f |
c5aa993b | 2174 | |
675dcf4f | 2175 | /* Print the value in stack frame FRAME of a variable specified by a |
aad95b57 TT |
2176 | struct symbol. NAME is the name to print; if NULL then VAR's print |
2177 | name will be used. STREAM is the ui_file on which to print the | |
2178 | value. INDENT specifies the number of indent levels to print | |
8f043999 JK |
2179 | before printing the variable name. |
2180 | ||
2181 | This function invalidates FRAME. */ | |
c906108c SS |
2182 | |
2183 | void | |
aad95b57 TT |
2184 | print_variable_and_value (const char *name, struct symbol *var, |
2185 | struct frame_info *frame, | |
2186 | struct ui_file *stream, int indent) | |
c906108c | 2187 | { |
c906108c | 2188 | |
aad95b57 TT |
2189 | if (!name) |
2190 | name = SYMBOL_PRINT_NAME (var); | |
2191 | ||
80ae2043 TT |
2192 | fputs_filtered (n_spaces (2 * indent), stream); |
2193 | fputs_styled (name, variable_name_style.style (), stream); | |
2194 | fputs_filtered (" = ", stream); | |
2195 | ||
a70b8144 | 2196 | try |
0f6a939d PM |
2197 | { |
2198 | struct value *val; | |
2199 | struct value_print_options opts; | |
aad95b57 | 2200 | |
63e43d3a PMR |
2201 | /* READ_VAR_VALUE needs a block in order to deal with non-local |
2202 | references (i.e. to handle nested functions). In this context, we | |
2203 | print variables that are local to this frame, so we can avoid passing | |
2204 | a block to it. */ | |
2205 | val = read_var_value (var, NULL, frame); | |
0f6a939d | 2206 | get_user_print_options (&opts); |
3343315b | 2207 | opts.deref_ref = 1; |
0f6a939d | 2208 | common_val_print (val, stream, indent, &opts, current_language); |
8f043999 JK |
2209 | |
2210 | /* common_val_print invalidates FRAME when a pretty printer calls inferior | |
2211 | function. */ | |
2212 | frame = NULL; | |
0f6a939d | 2213 | } |
230d2906 | 2214 | catch (const gdb_exception_error &except) |
492d29ea | 2215 | { |
3d6e9d23 TT |
2216 | fprintf_filtered (stream, "<error reading variable %s (%s)>", name, |
2217 | except.what ()); | |
492d29ea | 2218 | } |
492d29ea | 2219 | |
aad95b57 | 2220 | fprintf_filtered (stream, "\n"); |
c906108c SS |
2221 | } |
2222 | ||
c2792f5a DE |
2223 | /* Subroutine of ui_printf to simplify it. |
2224 | Print VALUE to STREAM using FORMAT. | |
e12f57ab | 2225 | VALUE is a C-style string on the target. */ |
c2792f5a DE |
2226 | |
2227 | static void | |
2228 | printf_c_string (struct ui_file *stream, const char *format, | |
2229 | struct value *value) | |
2230 | { | |
2231 | gdb_byte *str; | |
2232 | CORE_ADDR tem; | |
2233 | int j; | |
2234 | ||
2235 | tem = value_as_address (value); | |
3ae9ce5d TT |
2236 | if (tem == 0) |
2237 | { | |
af39b1c2 SM |
2238 | DIAGNOSTIC_PUSH |
2239 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
3ae9ce5d | 2240 | fprintf_filtered (stream, format, "(null)"); |
af39b1c2 | 2241 | DIAGNOSTIC_POP |
3ae9ce5d TT |
2242 | return; |
2243 | } | |
c2792f5a DE |
2244 | |
2245 | /* This is a %s argument. Find the length of the string. */ | |
2246 | for (j = 0;; j++) | |
2247 | { | |
2248 | gdb_byte c; | |
2249 | ||
2250 | QUIT; | |
2251 | read_memory (tem + j, &c, 1); | |
2252 | if (c == 0) | |
2253 | break; | |
2254 | } | |
2255 | ||
2256 | /* Copy the string contents into a string inside GDB. */ | |
2257 | str = (gdb_byte *) alloca (j + 1); | |
2258 | if (j != 0) | |
2259 | read_memory (tem, str, j); | |
2260 | str[j] = 0; | |
2261 | ||
af39b1c2 SM |
2262 | DIAGNOSTIC_PUSH |
2263 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2264 | fprintf_filtered (stream, format, (char *) str); |
af39b1c2 | 2265 | DIAGNOSTIC_POP |
c2792f5a DE |
2266 | } |
2267 | ||
2268 | /* Subroutine of ui_printf to simplify it. | |
2269 | Print VALUE to STREAM using FORMAT. | |
e12f57ab | 2270 | VALUE is a wide C-style string on the target. */ |
c2792f5a DE |
2271 | |
2272 | static void | |
2273 | printf_wide_c_string (struct ui_file *stream, const char *format, | |
2274 | struct value *value) | |
2275 | { | |
2276 | gdb_byte *str; | |
2277 | CORE_ADDR tem; | |
2278 | int j; | |
2279 | struct gdbarch *gdbarch = get_type_arch (value_type (value)); | |
2280 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
2281 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
2282 | "wchar_t", NULL, 0); | |
2283 | int wcwidth = TYPE_LENGTH (wctype); | |
224c3ddb | 2284 | gdb_byte *buf = (gdb_byte *) alloca (wcwidth); |
c2792f5a DE |
2285 | |
2286 | tem = value_as_address (value); | |
3ae9ce5d TT |
2287 | if (tem == 0) |
2288 | { | |
af39b1c2 SM |
2289 | DIAGNOSTIC_PUSH |
2290 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
3ae9ce5d | 2291 | fprintf_filtered (stream, format, "(null)"); |
af39b1c2 | 2292 | DIAGNOSTIC_POP |
3ae9ce5d TT |
2293 | return; |
2294 | } | |
c2792f5a DE |
2295 | |
2296 | /* This is a %s argument. Find the length of the string. */ | |
2297 | for (j = 0;; j += wcwidth) | |
2298 | { | |
2299 | QUIT; | |
2300 | read_memory (tem + j, buf, wcwidth); | |
2301 | if (extract_unsigned_integer (buf, wcwidth, byte_order) == 0) | |
2302 | break; | |
2303 | } | |
2304 | ||
2305 | /* Copy the string contents into a string inside GDB. */ | |
2306 | str = (gdb_byte *) alloca (j + wcwidth); | |
2307 | if (j != 0) | |
2308 | read_memory (tem, str, j); | |
2309 | memset (&str[j], 0, wcwidth); | |
2310 | ||
8268c778 | 2311 | auto_obstack output; |
c2792f5a DE |
2312 | |
2313 | convert_between_encodings (target_wide_charset (gdbarch), | |
2314 | host_charset (), | |
2315 | str, j, wcwidth, | |
2316 | &output, translit_char); | |
2317 | obstack_grow_str0 (&output, ""); | |
2318 | ||
af39b1c2 SM |
2319 | DIAGNOSTIC_PUSH |
2320 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2321 | fprintf_filtered (stream, format, obstack_base (&output)); |
af39b1c2 | 2322 | DIAGNOSTIC_POP |
c2792f5a DE |
2323 | } |
2324 | ||
2325 | /* Subroutine of ui_printf to simplify it. | |
16e812b2 | 2326 | Print VALUE, a floating point value, to STREAM using FORMAT. */ |
c2792f5a DE |
2327 | |
2328 | static void | |
16e812b2 UW |
2329 | printf_floating (struct ui_file *stream, const char *format, |
2330 | struct value *value, enum argclass argclass) | |
c2792f5a | 2331 | { |
c2792f5a DE |
2332 | /* Parameter data. */ |
2333 | struct type *param_type = value_type (value); | |
2334 | struct gdbarch *gdbarch = get_type_arch (param_type); | |
c2792f5a | 2335 | |
16e812b2 UW |
2336 | /* Determine target type corresponding to the format string. */ |
2337 | struct type *fmt_type; | |
2338 | switch (argclass) | |
c2792f5a | 2339 | { |
16e812b2 UW |
2340 | case double_arg: |
2341 | fmt_type = builtin_type (gdbarch)->builtin_double; | |
2342 | break; | |
2343 | case long_double_arg: | |
2344 | fmt_type = builtin_type (gdbarch)->builtin_long_double; | |
2345 | break; | |
2346 | case dec32float_arg: | |
2347 | fmt_type = builtin_type (gdbarch)->builtin_decfloat; | |
2348 | break; | |
2349 | case dec64float_arg: | |
2350 | fmt_type = builtin_type (gdbarch)->builtin_decdouble; | |
2351 | break; | |
2352 | case dec128float_arg: | |
2353 | fmt_type = builtin_type (gdbarch)->builtin_declong; | |
2354 | break; | |
2355 | default: | |
2356 | gdb_assert_not_reached ("unexpected argument class"); | |
c2792f5a DE |
2357 | } |
2358 | ||
16e812b2 UW |
2359 | /* To match the traditional GDB behavior, the conversion is |
2360 | done differently depending on the type of the parameter: | |
2361 | ||
2362 | - if the parameter has floating-point type, it's value | |
2363 | is converted to the target type; | |
2364 | ||
2365 | - otherwise, if the parameter has a type that is of the | |
2366 | same size as a built-in floating-point type, the value | |
2367 | bytes are interpreted as if they were of that type, and | |
2368 | then converted to the target type (this is not done for | |
2369 | decimal floating-point argument classes); | |
2370 | ||
2371 | - otherwise, if the source value has an integer value, | |
2372 | it's value is converted to the target type; | |
c2792f5a | 2373 | |
16e812b2 | 2374 | - otherwise, an error is raised. |
c2792f5a | 2375 | |
16e812b2 UW |
2376 | In either case, the result of the conversion is a byte buffer |
2377 | formatted in the target format for the target type. */ | |
2378 | ||
2379 | if (TYPE_CODE (fmt_type) == TYPE_CODE_FLT) | |
2380 | { | |
2381 | param_type = float_type_from_length (param_type); | |
2382 | if (param_type != value_type (value)) | |
2383 | value = value_from_contents (param_type, value_contents (value)); | |
2384 | } | |
2385 | ||
2386 | value = value_cast (fmt_type, value); | |
c2792f5a | 2387 | |
3b4b2f16 | 2388 | /* Convert the value to a string and print it. */ |
f69fdf9b UW |
2389 | std::string str |
2390 | = target_float_to_string (value_contents (value), fmt_type, format); | |
3b4b2f16 | 2391 | fputs_filtered (str.c_str (), stream); |
c2792f5a DE |
2392 | } |
2393 | ||
2394 | /* Subroutine of ui_printf to simplify it. | |
2395 | Print VALUE, a target pointer, to STREAM using FORMAT. */ | |
2396 | ||
2397 | static void | |
2398 | printf_pointer (struct ui_file *stream, const char *format, | |
2399 | struct value *value) | |
2400 | { | |
2401 | /* We avoid the host's %p because pointers are too | |
2402 | likely to be the wrong size. The only interesting | |
2403 | modifier for %p is a width; extract that, and then | |
2404 | handle %p as glibc would: %#x or a literal "(nil)". */ | |
2405 | ||
2406 | const char *p; | |
2407 | char *fmt, *fmt_p; | |
2408 | #ifdef PRINTF_HAS_LONG_LONG | |
2409 | long long val = value_as_long (value); | |
2410 | #else | |
2411 | long val = value_as_long (value); | |
2412 | #endif | |
2413 | ||
224c3ddb | 2414 | fmt = (char *) alloca (strlen (format) + 5); |
c2792f5a DE |
2415 | |
2416 | /* Copy up to the leading %. */ | |
2417 | p = format; | |
2418 | fmt_p = fmt; | |
2419 | while (*p) | |
2420 | { | |
2421 | int is_percent = (*p == '%'); | |
2422 | ||
2423 | *fmt_p++ = *p++; | |
2424 | if (is_percent) | |
2425 | { | |
2426 | if (*p == '%') | |
2427 | *fmt_p++ = *p++; | |
2428 | else | |
2429 | break; | |
2430 | } | |
2431 | } | |
2432 | ||
2433 | if (val != 0) | |
2434 | *fmt_p++ = '#'; | |
2435 | ||
b8c2339b TT |
2436 | /* Copy any width or flags. Only the "-" flag is valid for pointers |
2437 | -- see the format_pieces constructor. */ | |
2438 | while (*p == '-' || (*p >= '0' && *p < '9')) | |
c2792f5a DE |
2439 | *fmt_p++ = *p++; |
2440 | ||
2441 | gdb_assert (*p == 'p' && *(p + 1) == '\0'); | |
2442 | if (val != 0) | |
2443 | { | |
2444 | #ifdef PRINTF_HAS_LONG_LONG | |
2445 | *fmt_p++ = 'l'; | |
2446 | #endif | |
2447 | *fmt_p++ = 'l'; | |
2448 | *fmt_p++ = 'x'; | |
2449 | *fmt_p++ = '\0'; | |
af39b1c2 SM |
2450 | DIAGNOSTIC_PUSH |
2451 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2452 | fprintf_filtered (stream, fmt, val); |
af39b1c2 | 2453 | DIAGNOSTIC_POP |
c2792f5a DE |
2454 | } |
2455 | else | |
2456 | { | |
2457 | *fmt_p++ = 's'; | |
2458 | *fmt_p++ = '\0'; | |
af39b1c2 SM |
2459 | DIAGNOSTIC_PUSH |
2460 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2461 | fprintf_filtered (stream, fmt, "(nil)"); |
af39b1c2 | 2462 | DIAGNOSTIC_POP |
c2792f5a DE |
2463 | } |
2464 | } | |
2465 | ||
a04b0428 JB |
2466 | /* printf "printf format string" ARG to STREAM. */ |
2467 | ||
2468 | static void | |
bbc13ae3 | 2469 | ui_printf (const char *arg, struct ui_file *stream) |
c906108c | 2470 | { |
bbc13ae3 | 2471 | const char *s = arg; |
8e481c3b | 2472 | std::vector<struct value *> val_args; |
c906108c SS |
2473 | |
2474 | if (s == 0) | |
e2e0b3e5 | 2475 | error_no_arg (_("format-control string and values to print")); |
c906108c | 2476 | |
f1735a53 | 2477 | s = skip_spaces (s); |
c906108c | 2478 | |
675dcf4f | 2479 | /* A format string should follow, enveloped in double quotes. */ |
c906108c | 2480 | if (*s++ != '"') |
8a3fe4f8 | 2481 | error (_("Bad format string, missing '\"'.")); |
c906108c | 2482 | |
8e481c3b | 2483 | format_pieces fpieces (&s); |
c906108c | 2484 | |
d3ce09f5 SS |
2485 | if (*s++ != '"') |
2486 | error (_("Bad format string, non-terminated '\"'.")); | |
2487 | ||
f1735a53 | 2488 | s = skip_spaces (s); |
c906108c SS |
2489 | |
2490 | if (*s != ',' && *s != 0) | |
8a3fe4f8 | 2491 | error (_("Invalid argument syntax")); |
c906108c | 2492 | |
c5aa993b JM |
2493 | if (*s == ',') |
2494 | s++; | |
f1735a53 | 2495 | s = skip_spaces (s); |
c906108c | 2496 | |
c906108c | 2497 | { |
c906108c | 2498 | int nargs_wanted; |
8e481c3b TT |
2499 | int i; |
2500 | const char *current_substring; | |
c906108c | 2501 | |
c906108c | 2502 | nargs_wanted = 0; |
8e481c3b TT |
2503 | for (auto &&piece : fpieces) |
2504 | if (piece.argclass != literal_piece) | |
d3ce09f5 | 2505 | ++nargs_wanted; |
c906108c SS |
2506 | |
2507 | /* Now, parse all arguments and evaluate them. | |
2508 | Store the VALUEs in VAL_ARGS. */ | |
2509 | ||
2510 | while (*s != '\0') | |
2511 | { | |
bbc13ae3 | 2512 | const char *s1; |
ad3bbd48 | 2513 | |
a04b0428 | 2514 | s1 = s; |
8e481c3b | 2515 | val_args.push_back (parse_to_comma_and_eval (&s1)); |
c5aa993b | 2516 | |
c906108c SS |
2517 | s = s1; |
2518 | if (*s == ',') | |
2519 | s++; | |
2520 | } | |
c5aa993b | 2521 | |
8e481c3b | 2522 | if (val_args.size () != nargs_wanted) |
8a3fe4f8 | 2523 | error (_("Wrong number of arguments for specified format-string")); |
c906108c SS |
2524 | |
2525 | /* Now actually print them. */ | |
d3ce09f5 | 2526 | i = 0; |
8e481c3b | 2527 | for (auto &&piece : fpieces) |
c906108c | 2528 | { |
8e481c3b TT |
2529 | current_substring = piece.string; |
2530 | switch (piece.argclass) | |
c906108c SS |
2531 | { |
2532 | case string_arg: | |
c2792f5a | 2533 | printf_c_string (stream, current_substring, val_args[i]); |
c906108c | 2534 | break; |
6c7a06a3 | 2535 | case wide_string_arg: |
c2792f5a | 2536 | printf_wide_c_string (stream, current_substring, val_args[i]); |
6c7a06a3 TT |
2537 | break; |
2538 | case wide_char_arg: | |
2539 | { | |
50810684 UW |
2540 | struct gdbarch *gdbarch |
2541 | = get_type_arch (value_type (val_args[i])); | |
2542 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
e6c014f2 | 2543 | "wchar_t", NULL, 0); |
6c7a06a3 | 2544 | struct type *valtype; |
6c7a06a3 TT |
2545 | const gdb_byte *bytes; |
2546 | ||
2547 | valtype = value_type (val_args[i]); | |
2548 | if (TYPE_LENGTH (valtype) != TYPE_LENGTH (wctype) | |
2549 | || TYPE_CODE (valtype) != TYPE_CODE_INT) | |
2550 | error (_("expected wchar_t argument for %%lc")); | |
2551 | ||
2552 | bytes = value_contents (val_args[i]); | |
2553 | ||
8268c778 | 2554 | auto_obstack output; |
6c7a06a3 | 2555 | |
f870a310 | 2556 | convert_between_encodings (target_wide_charset (gdbarch), |
6c7a06a3 TT |
2557 | host_charset (), |
2558 | bytes, TYPE_LENGTH (valtype), | |
2559 | TYPE_LENGTH (valtype), | |
2560 | &output, translit_char); | |
2561 | obstack_grow_str0 (&output, ""); | |
2562 | ||
af39b1c2 SM |
2563 | DIAGNOSTIC_PUSH |
2564 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 HZ |
2565 | fprintf_filtered (stream, current_substring, |
2566 | obstack_base (&output)); | |
af39b1c2 | 2567 | DIAGNOSTIC_POP |
6c7a06a3 TT |
2568 | } |
2569 | break; | |
c906108c | 2570 | case long_long_arg: |
74a0d9f6 | 2571 | #ifdef PRINTF_HAS_LONG_LONG |
c906108c SS |
2572 | { |
2573 | long long val = value_as_long (val_args[i]); | |
ad3bbd48 | 2574 | |
af39b1c2 SM |
2575 | DIAGNOSTIC_PUSH |
2576 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2577 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2578 | DIAGNOSTIC_POP |
c906108c SS |
2579 | break; |
2580 | } | |
2581 | #else | |
8a3fe4f8 | 2582 | error (_("long long not supported in printf")); |
c906108c SS |
2583 | #endif |
2584 | case int_arg: | |
2585 | { | |
46e9880c | 2586 | int val = value_as_long (val_args[i]); |
ad3bbd48 | 2587 | |
af39b1c2 SM |
2588 | DIAGNOSTIC_PUSH |
2589 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2590 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2591 | DIAGNOSTIC_POP |
46e9880c DJ |
2592 | break; |
2593 | } | |
2594 | case long_arg: | |
2595 | { | |
c906108c | 2596 | long val = value_as_long (val_args[i]); |
ad3bbd48 | 2597 | |
af39b1c2 SM |
2598 | DIAGNOSTIC_PUSH |
2599 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2600 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2601 | DIAGNOSTIC_POP |
c906108c SS |
2602 | break; |
2603 | } | |
16e812b2 UW |
2604 | /* Handles floating-point values. */ |
2605 | case double_arg: | |
2606 | case long_double_arg: | |
2607 | case dec32float_arg: | |
2608 | case dec64float_arg: | |
2609 | case dec128float_arg: | |
2610 | printf_floating (stream, current_substring, val_args[i], | |
8e481c3b | 2611 | piece.argclass); |
c2792f5a | 2612 | break; |
2025a643 | 2613 | case ptr_arg: |
c2792f5a DE |
2614 | printf_pointer (stream, current_substring, val_args[i]); |
2615 | break; | |
d3ce09f5 SS |
2616 | case literal_piece: |
2617 | /* Print a portion of the format string that has no | |
2618 | directives. Note that this will not include any | |
2619 | ordinary %-specs, but it might include "%%". That is | |
2620 | why we use printf_filtered and not puts_filtered here. | |
2621 | Also, we pass a dummy argument because some platforms | |
2622 | have modified GCC to include -Wformat-security by | |
2623 | default, which will warn here if there is no | |
2624 | argument. */ | |
af39b1c2 SM |
2625 | DIAGNOSTIC_PUSH |
2626 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
d3ce09f5 | 2627 | fprintf_filtered (stream, current_substring, 0); |
af39b1c2 | 2628 | DIAGNOSTIC_POP |
d3ce09f5 | 2629 | break; |
675dcf4f MK |
2630 | default: |
2631 | internal_error (__FILE__, __LINE__, | |
2025a643 | 2632 | _("failed internal consistency check")); |
c906108c | 2633 | } |
d3ce09f5 | 2634 | /* Maybe advance to the next argument. */ |
8e481c3b | 2635 | if (piece.argclass != literal_piece) |
d3ce09f5 | 2636 | ++i; |
c906108c | 2637 | } |
c906108c | 2638 | } |
c906108c | 2639 | } |
c906108c | 2640 | |
f1421989 HZ |
2641 | /* Implement the "printf" command. */ |
2642 | ||
a04b0428 | 2643 | static void |
0b39b52e | 2644 | printf_command (const char *arg, int from_tty) |
f1421989 | 2645 | { |
a04b0428 | 2646 | ui_printf (arg, gdb_stdout); |
ef1dfa36 TT |
2647 | reset_terminal_style (gdb_stdout); |
2648 | wrap_here (""); | |
50b34a18 | 2649 | gdb_flush (gdb_stdout); |
f1421989 HZ |
2650 | } |
2651 | ||
2652 | /* Implement the "eval" command. */ | |
2653 | ||
2654 | static void | |
0b39b52e | 2655 | eval_command (const char *arg, int from_tty) |
f1421989 | 2656 | { |
d7e74731 | 2657 | string_file stb; |
f1421989 | 2658 | |
d7e74731 | 2659 | ui_printf (arg, &stb); |
f1421989 | 2660 | |
d7e74731 | 2661 | std::string expanded = insert_user_defined_cmd_args (stb.c_str ()); |
01770bbd | 2662 | |
95a6b0a1 | 2663 | execute_command (expanded.c_str (), from_tty); |
f1421989 HZ |
2664 | } |
2665 | ||
c906108c | 2666 | void |
fba45db2 | 2667 | _initialize_printcmd (void) |
c906108c | 2668 | { |
c94fdfd0 EZ |
2669 | struct cmd_list_element *c; |
2670 | ||
c906108c SS |
2671 | current_display_number = -1; |
2672 | ||
76727919 | 2673 | gdb::observers::free_objfile.attach (clear_dangling_display_expressions); |
a3247a22 | 2674 | |
11db9430 | 2675 | add_info ("address", info_address_command, |
188e1fa9 TT |
2676 | _("Describe where symbol SYM is stored.\n\ |
2677 | Usage: info address SYM")); | |
c906108c | 2678 | |
11db9430 | 2679 | add_info ("symbol", info_symbol_command, _("\ |
1bedd215 | 2680 | Describe what symbol is at location ADDR.\n\ |
188e1fa9 | 2681 | Usage: info symbol ADDR\n\ |
1bedd215 | 2682 | Only for symbols with fixed locations (global or static scope).")); |
c906108c | 2683 | |
1bedd215 AC |
2684 | add_com ("x", class_vars, x_command, _("\ |
2685 | Examine memory: x/FMT ADDRESS.\n\ | |
c906108c SS |
2686 | ADDRESS is an expression for the memory address to examine.\n\ |
2687 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2688 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
6fbe845e AB |
2689 | t(binary), f(float), a(address), i(instruction), c(char), s(string)\n\ |
2690 | and z(hex, zero padded on the left).\n\ | |
1bedd215 | 2691 | Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ |
c906108c | 2692 | The specified number of objects of the specified size are printed\n\ |
bb556f1f TK |
2693 | according to the format. If a negative number is specified, memory is\n\ |
2694 | examined backward from the address.\n\n\ | |
c906108c SS |
2695 | Defaults for format and size letters are those previously used.\n\ |
2696 | Default count is 1. Default address is following last thing printed\n\ | |
1bedd215 | 2697 | with this command or \"print\".")); |
c906108c | 2698 | |
11db9430 | 2699 | add_info ("display", info_display_command, _("\ |
188e1fa9 TT |
2700 | Expressions to display when program stops, with code numbers.\n\ |
2701 | Usage: info display")); | |
c906108c | 2702 | |
1a966eab AC |
2703 | add_cmd ("undisplay", class_vars, undisplay_command, _("\ |
2704 | Cancel some expressions to be displayed when program stops.\n\ | |
188e1fa9 | 2705 | Usage: undisplay [NUM]...\n\ |
c906108c SS |
2706 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2707 | No argument means cancel all automatic-display expressions.\n\ | |
2708 | \"delete display\" has the same effect as this command.\n\ | |
1a966eab | 2709 | Do \"info display\" to see current list of code numbers."), |
c5aa993b | 2710 | &cmdlist); |
c906108c | 2711 | |
1bedd215 AC |
2712 | add_com ("display", class_vars, display_command, _("\ |
2713 | Print value of expression EXP each time the program stops.\n\ | |
188e1fa9 | 2714 | Usage: display[/FMT] EXP\n\ |
c906108c SS |
2715 | /FMT may be used before EXP as in the \"print\" command.\n\ |
2716 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2717 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2718 | and examining is done as in the \"x\" command.\n\n\ | |
2719 | With no argument, display all currently requested auto-display expressions.\n\ | |
1bedd215 | 2720 | Use \"undisplay\" to cancel display requests previously made.")); |
c906108c | 2721 | |
c9174737 | 2722 | add_cmd ("display", class_vars, enable_display_command, _("\ |
1a966eab | 2723 | Enable some expressions to be displayed when program stops.\n\ |
188e1fa9 | 2724 | Usage: enable display [NUM]...\n\ |
c906108c SS |
2725 | Arguments are the code numbers of the expressions to resume displaying.\n\ |
2726 | No argument means enable all automatic-display expressions.\n\ | |
1a966eab | 2727 | Do \"info display\" to see current list of code numbers."), &enablelist); |
c906108c | 2728 | |
1a966eab AC |
2729 | add_cmd ("display", class_vars, disable_display_command, _("\ |
2730 | Disable some expressions to be displayed when program stops.\n\ | |
188e1fa9 | 2731 | Usage: disable display [NUM]...\n\ |
c906108c SS |
2732 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2733 | No argument means disable all automatic-display expressions.\n\ | |
1a966eab | 2734 | Do \"info display\" to see current list of code numbers."), &disablelist); |
c906108c | 2735 | |
1a966eab AC |
2736 | add_cmd ("display", class_vars, undisplay_command, _("\ |
2737 | Cancel some expressions to be displayed when program stops.\n\ | |
188e1fa9 | 2738 | Usage: delete display [NUM]...\n\ |
c906108c SS |
2739 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2740 | No argument means cancel all automatic-display expressions.\n\ | |
1a966eab | 2741 | Do \"info display\" to see current list of code numbers."), &deletelist); |
c906108c | 2742 | |
1bedd215 | 2743 | add_com ("printf", class_vars, printf_command, _("\ |
80ae639d | 2744 | Formatted printing, like the C \"printf\" function.\n\ |
188e1fa9 | 2745 | Usage: printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ |
80ae639d | 2746 | This supports most C printf format specifications, like %s, %d, etc.")); |
c906108c | 2747 | |
1bedd215 AC |
2748 | add_com ("output", class_vars, output_command, _("\ |
2749 | Like \"print\" but don't put in value history and don't print newline.\n\ | |
188e1fa9 | 2750 | Usage: output EXP\n\ |
1bedd215 | 2751 | This is useful in user-defined commands.")); |
c906108c | 2752 | |
1bedd215 | 2753 | add_prefix_cmd ("set", class_vars, set_command, _("\ |
188e1fa9 TT |
2754 | Evaluate expression EXP and assign result to variable VAR\n\ |
2755 | Usage: set VAR = EXP\n\ | |
2756 | This uses assignment syntax appropriate for the current language\n\ | |
2757 | (VAR = EXP or VAR := EXP for example).\n\ | |
2758 | VAR may be a debugger \"convenience\" variable (names starting\n\ | |
c906108c | 2759 | with $), a register (a few standard names starting with $), or an actual\n\ |
1bedd215 AC |
2760 | variable in the program being debugged. EXP is any valid expression.\n\ |
2761 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
2762 | \n\ | |
2763 | With a subcommand, this command modifies parts of the gdb environment.\n\ | |
2764 | You can see these environment settings with the \"show\" command."), | |
c5aa993b | 2765 | &setlist, "set ", 1, &cmdlist); |
c906108c | 2766 | if (dbx_commands) |
0b39b52e | 2767 | add_com ("assign", class_vars, set_command, _("\ |
188e1fa9 TT |
2768 | Evaluate expression EXP and assign result to variable VAR\n\ |
2769 | Usage: assign VAR = EXP\n\ | |
2770 | This uses assignment syntax appropriate for the current language\n\ | |
2771 | (VAR = EXP or VAR := EXP for example).\n\ | |
2772 | VAR may be a debugger \"convenience\" variable (names starting\n\ | |
c906108c | 2773 | with $), a register (a few standard names starting with $), or an actual\n\ |
1bedd215 AC |
2774 | variable in the program being debugged. EXP is any valid expression.\n\ |
2775 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
c906108c | 2776 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
1bedd215 | 2777 | You can see these environment settings with the \"show\" command.")); |
c906108c | 2778 | |
0df8b418 | 2779 | /* "call" is the same as "set", but handy for dbx users to call fns. */ |
1bedd215 AC |
2780 | c = add_com ("call", class_vars, call_command, _("\ |
2781 | Call a function in the program.\n\ | |
188e1fa9 | 2782 | Usage: call EXP\n\ |
c906108c SS |
2783 | The argument is the function name and arguments, in the notation of the\n\ |
2784 | current working language. The result is printed and saved in the value\n\ | |
1bedd215 | 2785 | history, if it is not void.")); |
7d8062de | 2786 | set_cmd_completer_handle_brkchars (c, print_command_completer); |
c906108c | 2787 | |
1a966eab | 2788 | add_cmd ("variable", class_vars, set_command, _("\ |
188e1fa9 TT |
2789 | Evaluate expression EXP and assign result to variable VAR\n\ |
2790 | Usage: set variable VAR = EXP\n\ | |
2791 | This uses assignment syntax appropriate for the current language\n\ | |
2792 | (VAR = EXP or VAR := EXP for example).\n\ | |
2793 | VAR may be a debugger \"convenience\" variable (names starting\n\ | |
c906108c SS |
2794 | with $), a register (a few standard names starting with $), or an actual\n\ |
2795 | variable in the program being debugged. EXP is any valid expression.\n\ | |
1a966eab | 2796 | This may usually be abbreviated to simply \"set\"."), |
c5aa993b | 2797 | &setlist); |
3fcded8f | 2798 | add_alias_cmd ("var", "variable", class_vars, 0, &setlist); |
c906108c | 2799 | |
7d8062de PA |
2800 | const auto print_opts = make_value_print_options_def_group (nullptr); |
2801 | ||
2802 | static const std::string print_help = gdb::option::build_help (N_("\ | |
1bedd215 | 2803 | Print value of expression EXP.\n\ |
7d8062de PA |
2804 | Usage: print [[OPTION]... --] [/FMT] [EXP]\n\ |
2805 | \n\ | |
2806 | Options:\n\ | |
2807 | %OPTIONS%\ | |
2808 | Note: because this command accepts arbitrary expressions, if you\n\ | |
2809 | specify any command option, you must use a double dash (\"--\")\n\ | |
2810 | to mark the end of option processing. E.g.: \"print -o -- myobj\".\n\ | |
2811 | \n\ | |
c906108c SS |
2812 | Variables accessible are those of the lexical environment of the selected\n\ |
2813 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2814 | \n\ | |
2815 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2816 | $$NUM refers to NUM'th value back from the last one.\n\ | |
1bedd215 AC |
2817 | Names starting with $ refer to registers (with the values they would have\n\ |
2818 | if the program were to return to the stack frame now selected, restoring\n\ | |
c906108c SS |
2819 | all registers saved by frames farther in) or else to debugger\n\ |
2820 | \"convenience\" variables (any such name not a known register).\n\ | |
1bedd215 AC |
2821 | Use assignment expressions to give values to convenience variables.\n\ |
2822 | \n\ | |
c906108c SS |
2823 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ |
2824 | @ is a binary operator for treating consecutive data objects\n\ | |
2825 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2826 | element is FOO, whose second element is stored in the space following\n\ | |
2827 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
1bedd215 AC |
2828 | resides in memory.\n\ |
2829 | \n\ | |
c906108c | 2830 | EXP may be preceded with /FMT, where FMT is a format letter\n\ |
7d8062de PA |
2831 | but no count or size letter (see \"x\" command)."), |
2832 | print_opts); | |
2833 | ||
2834 | c = add_com ("print", class_vars, print_command, print_help.c_str ()); | |
2835 | set_cmd_completer_handle_brkchars (c, print_command_completer); | |
c906108c | 2836 | add_com_alias ("p", "print", class_vars, 1); |
e93a8774 | 2837 | add_com_alias ("inspect", "print", class_vars, 1); |
c906108c | 2838 | |
35096d9d AC |
2839 | add_setshow_uinteger_cmd ("max-symbolic-offset", no_class, |
2840 | &max_symbolic_offset, _("\ | |
188e1fa9 TT |
2841 | Set the largest offset that will be printed in <SYMBOL+1234> form."), _("\ |
2842 | Show the largest offset that will be printed in <SYMBOL+1234> form."), _("\ | |
f81d1120 PA |
2843 | Tell GDB to only display the symbolic form of an address if the\n\ |
2844 | offset between the closest earlier symbol and the address is less than\n\ | |
2845 | the specified maximum offset. The default is \"unlimited\", which tells GDB\n\ | |
2846 | to always print the symbolic form of an address if any symbol precedes\n\ | |
2847 | it. Zero is equivalent to \"unlimited\"."), | |
35096d9d | 2848 | NULL, |
920d2a44 | 2849 | show_max_symbolic_offset, |
35096d9d | 2850 | &setprintlist, &showprintlist); |
5bf193a2 AC |
2851 | add_setshow_boolean_cmd ("symbol-filename", no_class, |
2852 | &print_symbol_filename, _("\ | |
188e1fa9 TT |
2853 | Set printing of source filename and line number with <SYMBOL>."), _("\ |
2854 | Show printing of source filename and line number with <SYMBOL>."), NULL, | |
5bf193a2 | 2855 | NULL, |
920d2a44 | 2856 | show_print_symbol_filename, |
5bf193a2 | 2857 | &setprintlist, &showprintlist); |
f1421989 HZ |
2858 | |
2859 | add_com ("eval", no_class, eval_command, _("\ | |
188e1fa9 TT |
2860 | Construct a GDB command and then evaluate it.\n\ |
2861 | Usage: eval \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
2862 | Convert the arguments to a string as \"printf\" would, but then\n\ | |
2863 | treat this string as a command line, and evaluate it.")); | |
c906108c | 2864 | } |