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" | |
1f6f6e21 | 26 | #include "c-lang.h" |
c906108c SS |
27 | #include "expression.h" |
28 | #include "gdbcore.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "target.h" | |
31 | #include "breakpoint.h" | |
32 | #include "demangle.h" | |
50f182aa | 33 | #include "gdb-demangle.h" |
c906108c SS |
34 | #include "valprint.h" |
35 | #include "annotate.h" | |
c5aa993b JM |
36 | #include "symfile.h" /* for overlay functions */ |
37 | #include "objfiles.h" /* ditto */ | |
c94fdfd0 | 38 | #include "completer.h" /* for completion functions */ |
8b93c638 | 39 | #include "ui-out.h" |
fe898f56 | 40 | #include "block.h" |
92bf2b80 | 41 | #include "disasm.h" |
f69fdf9b | 42 | #include "target-float.h" |
76727919 | 43 | #include "observable.h" |
a3247a22 | 44 | #include "solist.h" |
a3247a22 | 45 | #include "parser-defs.h" |
6c7a06a3 | 46 | #include "charset.h" |
704e9165 | 47 | #include "arch-utils.h" |
e9cafbcc | 48 | #include "cli/cli-utils.h" |
7d8062de | 49 | #include "cli/cli-option.h" |
01770bbd | 50 | #include "cli/cli-script.h" |
80ae2043 | 51 | #include "cli/cli-style.h" |
268a13a5 | 52 | #include "gdbsupport/format.h" |
05cba821 | 53 | #include "source.h" |
268a13a5 TT |
54 | #include "gdbsupport/byte-vector.h" |
55 | #include "gdbsupport/gdb_optional.h" | |
c906108c | 56 | |
c906108c SS |
57 | /* Last specified output format. */ |
58 | ||
a6bac58e | 59 | static char last_format = 0; |
c906108c SS |
60 | |
61 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
62 | ||
63 | static char last_size = 'w'; | |
64 | ||
9be2ae8f TT |
65 | /* Last specified count for the 'x' command. */ |
66 | ||
67 | static int last_count; | |
68 | ||
5d3729b5 | 69 | /* Default address to examine next, and associated architecture. */ |
c906108c | 70 | |
5d3729b5 | 71 | static struct gdbarch *next_gdbarch; |
c906108c SS |
72 | static CORE_ADDR next_address; |
73 | ||
a4642986 MR |
74 | /* Number of delay instructions following current disassembled insn. */ |
75 | ||
76 | static int branch_delay_insns; | |
77 | ||
c906108c SS |
78 | /* Last address examined. */ |
79 | ||
80 | static CORE_ADDR last_examine_address; | |
81 | ||
82 | /* Contents of last address examined. | |
83 | This is not valid past the end of the `x' command! */ | |
84 | ||
9b558729 | 85 | static value_ref_ptr last_examine_value; |
c906108c SS |
86 | |
87 | /* Largest offset between a symbolic value and an address, that will be | |
88 | printed as `0x1234 <symbol+offset>'. */ | |
89 | ||
90 | static unsigned int max_symbolic_offset = UINT_MAX; | |
920d2a44 AC |
91 | static void |
92 | show_max_symbolic_offset (struct ui_file *file, int from_tty, | |
93 | struct cmd_list_element *c, const char *value) | |
94 | { | |
3e43a32a MS |
95 | fprintf_filtered (file, |
96 | _("The largest offset that will be " | |
97 | "printed in <symbol+1234> form is %s.\n"), | |
920d2a44 AC |
98 | value); |
99 | } | |
c906108c SS |
100 | |
101 | /* Append the source filename and linenumber of the symbol when | |
102 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
103 | static int print_symbol_filename = 0; | |
920d2a44 AC |
104 | static void |
105 | show_print_symbol_filename (struct ui_file *file, int from_tty, | |
106 | struct cmd_list_element *c, const char *value) | |
107 | { | |
3e43a32a MS |
108 | fprintf_filtered (file, _("Printing of source filename and " |
109 | "line number with <symbol> is %s.\n"), | |
920d2a44 AC |
110 | value); |
111 | } | |
c906108c SS |
112 | |
113 | /* Number of auto-display expression currently being displayed. | |
9d8fa392 | 114 | So that we can disable it if we get a signal within it. |
c906108c SS |
115 | -1 when not doing one. */ |
116 | ||
5a18e302 | 117 | static int current_display_number; |
c906108c | 118 | |
c906108c | 119 | struct display |
c5aa993b JM |
120 | { |
121 | /* Chain link to next auto-display item. */ | |
122 | struct display *next; | |
6c95b8df | 123 | |
fa8a61dc TT |
124 | /* The expression as the user typed it. */ |
125 | char *exp_string; | |
6c95b8df | 126 | |
c5aa993b | 127 | /* Expression to be evaluated and displayed. */ |
4d01a485 | 128 | expression_up exp; |
6c95b8df | 129 | |
c5aa993b JM |
130 | /* Item number of this auto-display item. */ |
131 | int number; | |
6c95b8df | 132 | |
c5aa993b JM |
133 | /* Display format specified. */ |
134 | struct format_data format; | |
6c95b8df PA |
135 | |
136 | /* Program space associated with `block'. */ | |
137 | struct program_space *pspace; | |
138 | ||
0df8b418 | 139 | /* Innermost block required by this expression when evaluated. */ |
270140bd | 140 | const struct block *block; |
6c95b8df | 141 | |
0df8b418 | 142 | /* Status of this display (enabled or disabled). */ |
b5de0fa7 | 143 | int enabled_p; |
c5aa993b | 144 | }; |
c906108c SS |
145 | |
146 | /* Chain of expressions whose values should be displayed | |
147 | automatically each time the program stops. */ | |
148 | ||
149 | static struct display *display_chain; | |
150 | ||
151 | static int display_number; | |
152 | ||
c9174737 PA |
153 | /* Walk the following statement or block through all displays. |
154 | ALL_DISPLAYS_SAFE does so even if the statement deletes the current | |
155 | display. */ | |
3c3fe74c PA |
156 | |
157 | #define ALL_DISPLAYS(B) \ | |
158 | for (B = display_chain; B; B = B->next) | |
159 | ||
c9174737 PA |
160 | #define ALL_DISPLAYS_SAFE(B,TMP) \ |
161 | for (B = display_chain; \ | |
162 | B ? (TMP = B->next, 1): 0; \ | |
163 | B = TMP) | |
164 | ||
0df8b418 | 165 | /* Prototypes for local functions. */ |
c906108c | 166 | |
a14ed312 | 167 | static void do_one_display (struct display *); |
c906108c | 168 | \f |
c5aa993b | 169 | |
c906108c SS |
170 | /* Decode a format specification. *STRING_PTR should point to it. |
171 | OFORMAT and OSIZE are used as defaults for the format and size | |
172 | if none are given in the format specification. | |
173 | If OSIZE is zero, then the size field of the returned value | |
174 | should be set only if a size is explicitly specified by the | |
175 | user. | |
176 | The structure returned describes all the data | |
177 | found in the specification. In addition, *STRING_PTR is advanced | |
178 | past the specification and past all whitespace following it. */ | |
179 | ||
180 | static struct format_data | |
6f937416 | 181 | decode_format (const char **string_ptr, int oformat, int osize) |
c906108c SS |
182 | { |
183 | struct format_data val; | |
6f937416 | 184 | const char *p = *string_ptr; |
c906108c SS |
185 | |
186 | val.format = '?'; | |
187 | val.size = '?'; | |
188 | val.count = 1; | |
a6bac58e | 189 | val.raw = 0; |
c906108c | 190 | |
bb556f1f TK |
191 | if (*p == '-') |
192 | { | |
193 | val.count = -1; | |
194 | p++; | |
195 | } | |
c906108c | 196 | if (*p >= '0' && *p <= '9') |
bb556f1f | 197 | val.count *= atoi (p); |
c5aa993b JM |
198 | while (*p >= '0' && *p <= '9') |
199 | p++; | |
c906108c SS |
200 | |
201 | /* Now process size or format letters that follow. */ | |
202 | ||
203 | while (1) | |
204 | { | |
205 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
206 | val.size = *p++; | |
a6bac58e TT |
207 | else if (*p == 'r') |
208 | { | |
209 | val.raw = 1; | |
210 | p++; | |
211 | } | |
c906108c SS |
212 | else if (*p >= 'a' && *p <= 'z') |
213 | val.format = *p++; | |
214 | else | |
215 | break; | |
216 | } | |
217 | ||
2f433492 | 218 | *string_ptr = skip_spaces (p); |
c906108c SS |
219 | |
220 | /* Set defaults for format and size if not specified. */ | |
221 | if (val.format == '?') | |
222 | { | |
223 | if (val.size == '?') | |
224 | { | |
225 | /* Neither has been specified. */ | |
226 | val.format = oformat; | |
227 | val.size = osize; | |
228 | } | |
229 | else | |
230 | /* If a size is specified, any format makes a reasonable | |
231 | default except 'i'. */ | |
232 | val.format = oformat == 'i' ? 'x' : oformat; | |
233 | } | |
234 | else if (val.size == '?') | |
235 | switch (val.format) | |
236 | { | |
237 | case 'a': | |
5d3729b5 UW |
238 | /* Pick the appropriate size for an address. This is deferred |
239 | until do_examine when we know the actual architecture to use. | |
240 | A special size value of 'a' is used to indicate this case. */ | |
241 | val.size = osize ? 'a' : osize; | |
c906108c SS |
242 | break; |
243 | case 'f': | |
244 | /* Floating point has to be word or giantword. */ | |
245 | if (osize == 'w' || osize == 'g') | |
246 | val.size = osize; | |
247 | else | |
248 | /* Default it to giantword if the last used size is not | |
249 | appropriate. */ | |
250 | val.size = osize ? 'g' : osize; | |
251 | break; | |
252 | case 'c': | |
253 | /* Characters default to one byte. */ | |
254 | val.size = osize ? 'b' : osize; | |
255 | break; | |
9a22f0d0 | 256 | case 's': |
3e43a32a MS |
257 | /* Display strings with byte size chars unless explicitly |
258 | specified. */ | |
9a22f0d0 PM |
259 | val.size = '\0'; |
260 | break; | |
261 | ||
c906108c SS |
262 | default: |
263 | /* The default is the size most recently specified. */ | |
264 | val.size = osize; | |
265 | } | |
266 | ||
267 | return val; | |
268 | } | |
269 | \f | |
79a45b7d | 270 | /* Print value VAL on stream according to OPTIONS. |
c906108c | 271 | Do not end with a newline. |
c906108c | 272 | SIZE is the letter for the size of datum being printed. |
ea37ba09 DJ |
273 | This is used to pad hex numbers so they line up. SIZE is 0 |
274 | for print / output and set for examine. */ | |
c906108c SS |
275 | |
276 | static void | |
79a45b7d TT |
277 | print_formatted (struct value *val, int size, |
278 | const struct value_print_options *options, | |
fba45db2 | 279 | struct ui_file *stream) |
c906108c | 280 | { |
df407dfe | 281 | struct type *type = check_typedef (value_type (val)); |
c906108c SS |
282 | int len = TYPE_LENGTH (type); |
283 | ||
284 | if (VALUE_LVAL (val) == lval_memory) | |
42ae5230 | 285 | next_address = value_address (val) + len; |
c906108c | 286 | |
ea37ba09 | 287 | if (size) |
c906108c | 288 | { |
79a45b7d | 289 | switch (options->format) |
ea37ba09 DJ |
290 | { |
291 | case 's': | |
6c7a06a3 TT |
292 | { |
293 | struct type *elttype = value_type (val); | |
ad3bbd48 | 294 | |
42ae5230 | 295 | next_address = (value_address (val) |
09ca9e2e | 296 | + val_print_string (elttype, NULL, |
42ae5230 | 297 | value_address (val), -1, |
9a22f0d0 | 298 | stream, options) * len); |
6c7a06a3 | 299 | } |
ea37ba09 | 300 | return; |
c906108c | 301 | |
ea37ba09 DJ |
302 | case 'i': |
303 | /* We often wrap here if there are long symbolic names. */ | |
304 | wrap_here (" "); | |
42ae5230 | 305 | next_address = (value_address (val) |
13274fc3 UW |
306 | + gdb_print_insn (get_type_arch (type), |
307 | value_address (val), stream, | |
ea37ba09 DJ |
308 | &branch_delay_insns)); |
309 | return; | |
310 | } | |
c906108c | 311 | } |
ea37ba09 | 312 | |
79a45b7d | 313 | if (options->format == 0 || options->format == 's' |
4e885b20 | 314 | || TYPE_CODE (type) == TYPE_CODE_REF |
ea37ba09 DJ |
315 | || TYPE_CODE (type) == TYPE_CODE_ARRAY |
316 | || TYPE_CODE (type) == TYPE_CODE_STRING | |
317 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
318 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
319 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
79a45b7d | 320 | value_print (val, stream, options); |
ea37ba09 | 321 | else |
b021a221 MS |
322 | /* User specified format, so don't look to the type to tell us |
323 | what to do. */ | |
ab2188aa | 324 | val_print_scalar_formatted (type, |
ab2188aa PA |
325 | value_embedded_offset (val), |
326 | val, | |
327 | options, size, stream); | |
c906108c SS |
328 | } |
329 | ||
b806fb9a UW |
330 | /* Return builtin floating point type of same length as TYPE. |
331 | If no such type is found, return TYPE itself. */ | |
332 | static struct type * | |
50810684 | 333 | float_type_from_length (struct type *type) |
b806fb9a | 334 | { |
50810684 | 335 | struct gdbarch *gdbarch = get_type_arch (type); |
b806fb9a | 336 | const struct builtin_type *builtin = builtin_type (gdbarch); |
b806fb9a | 337 | |
744a8059 | 338 | if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_float)) |
b806fb9a | 339 | type = builtin->builtin_float; |
744a8059 | 340 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_double)) |
b806fb9a | 341 | type = builtin->builtin_double; |
744a8059 | 342 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_long_double)) |
b806fb9a UW |
343 | type = builtin->builtin_long_double; |
344 | ||
345 | return type; | |
346 | } | |
347 | ||
c906108c | 348 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, |
ab2188aa PA |
349 | according to OPTIONS and SIZE on STREAM. Formats s and i are not |
350 | supported at this level. */ | |
c906108c SS |
351 | |
352 | void | |
7c543f7b | 353 | print_scalar_formatted (const gdb_byte *valaddr, struct type *type, |
79a45b7d TT |
354 | const struct value_print_options *options, |
355 | int size, struct ui_file *stream) | |
c906108c | 356 | { |
50810684 | 357 | struct gdbarch *gdbarch = get_type_arch (type); |
c906108c | 358 | unsigned int len = TYPE_LENGTH (type); |
69feb676 | 359 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 360 | |
ab2188aa PA |
361 | /* String printing should go through val_print_scalar_formatted. */ |
362 | gdb_assert (options->format != 's'); | |
ea37ba09 | 363 | |
ef166cf4 | 364 | /* If the value is a pointer, and pointers and addresses are not the |
d0aee0c4 | 365 | same, then at this point, the value's length (in target bytes) is |
17a912b6 | 366 | gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */ |
ef166cf4 | 367 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
69feb676 | 368 | len = gdbarch_addr_bit (gdbarch) / TARGET_CHAR_BIT; |
ef166cf4 | 369 | |
c906108c SS |
370 | /* If we are printing it as unsigned, truncate it in case it is actually |
371 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
372 | (if shorts are 16 bits) instead of 4294967295). */ | |
d9109c80 TT |
373 | if (options->format != 'c' |
374 | && (options->format != 'd' || TYPE_UNSIGNED (type))) | |
c906108c | 375 | { |
d9109c80 TT |
376 | if (len < TYPE_LENGTH (type) && byte_order == BFD_ENDIAN_BIG) |
377 | valaddr += TYPE_LENGTH (type) - len; | |
c906108c SS |
378 | } |
379 | ||
d9109c80 | 380 | if (size != 0 && (options->format == 'x' || options->format == 't')) |
c906108c | 381 | { |
d9109c80 TT |
382 | /* Truncate to fit. */ |
383 | unsigned newlen; | |
384 | switch (size) | |
c906108c | 385 | { |
d9109c80 TT |
386 | case 'b': |
387 | newlen = 1; | |
388 | break; | |
389 | case 'h': | |
390 | newlen = 2; | |
391 | break; | |
392 | case 'w': | |
393 | newlen = 4; | |
394 | break; | |
395 | case 'g': | |
396 | newlen = 8; | |
397 | break; | |
398 | default: | |
399 | error (_("Undefined output size \"%c\"."), size); | |
c906108c | 400 | } |
d9109c80 TT |
401 | if (newlen < len && byte_order == BFD_ENDIAN_BIG) |
402 | valaddr += len - newlen; | |
403 | len = newlen; | |
404 | } | |
c906108c | 405 | |
d9109c80 TT |
406 | /* Historically gdb has printed floats by first casting them to a |
407 | long, and then printing the long. PR cli/16242 suggests changing | |
408 | this to using C-style hex float format. */ | |
d5722aa2 | 409 | gdb::byte_vector converted_float_bytes; |
d9109c80 TT |
410 | if (TYPE_CODE (type) == TYPE_CODE_FLT |
411 | && (options->format == 'o' | |
412 | || options->format == 'x' | |
413 | || options->format == 't' | |
d6382fff TT |
414 | || options->format == 'z' |
415 | || options->format == 'd' | |
416 | || options->format == 'u')) | |
d9109c80 TT |
417 | { |
418 | LONGEST val_long = unpack_long (type, valaddr); | |
419 | converted_float_bytes.resize (TYPE_LENGTH (type)); | |
420 | store_signed_integer (converted_float_bytes.data (), TYPE_LENGTH (type), | |
421 | byte_order, val_long); | |
422 | valaddr = converted_float_bytes.data (); | |
423 | } | |
c906108c | 424 | |
fdf0cbc2 UW |
425 | /* Printing a non-float type as 'f' will interpret the data as if it were |
426 | of a floating-point type of the same length, if that exists. Otherwise, | |
427 | the data is printed as integer. */ | |
428 | char format = options->format; | |
429 | if (format == 'f' && TYPE_CODE (type) != TYPE_CODE_FLT) | |
430 | { | |
431 | type = float_type_from_length (type); | |
432 | if (TYPE_CODE (type) != TYPE_CODE_FLT) | |
433 | format = 0; | |
434 | } | |
435 | ||
436 | switch (format) | |
d9109c80 TT |
437 | { |
438 | case 'o': | |
439 | print_octal_chars (stream, valaddr, len, byte_order); | |
440 | break; | |
d6382fff TT |
441 | case 'd': |
442 | print_decimal_chars (stream, valaddr, len, true, byte_order); | |
443 | break; | |
c906108c | 444 | case 'u': |
d9109c80 | 445 | print_decimal_chars (stream, valaddr, len, false, byte_order); |
c906108c | 446 | break; |
d9109c80 | 447 | case 0: |
d9109c80 TT |
448 | if (TYPE_CODE (type) != TYPE_CODE_FLT) |
449 | { | |
450 | print_decimal_chars (stream, valaddr, len, !TYPE_UNSIGNED (type), | |
451 | byte_order); | |
452 | break; | |
453 | } | |
454 | /* FALLTHROUGH */ | |
455 | case 'f': | |
d9109c80 | 456 | print_floating (valaddr, type, stream); |
c906108c SS |
457 | break; |
458 | ||
d9109c80 TT |
459 | case 't': |
460 | print_binary_chars (stream, valaddr, len, byte_order, size > 0); | |
461 | break; | |
462 | case 'x': | |
463 | print_hex_chars (stream, valaddr, len, byte_order, size > 0); | |
464 | break; | |
465 | case 'z': | |
466 | print_hex_chars (stream, valaddr, len, byte_order, true); | |
c906108c | 467 | break; |
c906108c | 468 | case 'c': |
79a45b7d TT |
469 | { |
470 | struct value_print_options opts = *options; | |
69feb676 | 471 | |
d9109c80 TT |
472 | LONGEST val_long = unpack_long (type, valaddr); |
473 | ||
ad3bbd48 | 474 | opts.format = 0; |
79a45b7d | 475 | if (TYPE_UNSIGNED (type)) |
69feb676 UW |
476 | type = builtin_type (gdbarch)->builtin_true_unsigned_char; |
477 | else | |
478 | type = builtin_type (gdbarch)->builtin_true_char; | |
479 | ||
480 | value_print (value_from_longest (type, val_long), stream, &opts); | |
79a45b7d | 481 | } |
c906108c SS |
482 | break; |
483 | ||
d9109c80 | 484 | case 'a': |
c906108c | 485 | { |
d9109c80 | 486 | CORE_ADDR addr = unpack_pointer (type, valaddr); |
c906108c | 487 | |
d9109c80 | 488 | print_address (gdbarch, addr, stream); |
c906108c SS |
489 | } |
490 | break; | |
491 | ||
492 | default: | |
fdf0cbc2 | 493 | error (_("Undefined output format \"%c\"."), format); |
c906108c SS |
494 | } |
495 | } | |
496 | ||
497 | /* Specify default address for `x' command. | |
675dcf4f | 498 | The `info lines' command uses this. */ |
c906108c SS |
499 | |
500 | void | |
8b9b9e1a | 501 | set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 502 | { |
8b9b9e1a UW |
503 | struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
504 | ||
5d3729b5 | 505 | next_gdbarch = gdbarch; |
c906108c SS |
506 | next_address = addr; |
507 | ||
508 | /* Make address available to the user as $_. */ | |
509 | set_internalvar (lookup_internalvar ("_"), | |
8b9b9e1a | 510 | value_from_pointer (ptr_type, addr)); |
c906108c SS |
511 | } |
512 | ||
513 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
514 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
515 | Optionally also print source file and line number, if available. | |
516 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
517 | or to interpret it as a possible C++ name and convert it back to source | |
518 | form. However note that DO_DEMANGLE can be overridden by the specific | |
9cb709b6 TT |
519 | settings of the demangle and asm_demangle variables. Returns |
520 | non-zero if anything was printed; zero otherwise. */ | |
c906108c | 521 | |
9cb709b6 | 522 | int |
22e722e1 DJ |
523 | print_address_symbolic (struct gdbarch *gdbarch, CORE_ADDR addr, |
524 | struct ui_file *stream, | |
a121b7c1 | 525 | int do_demangle, const char *leadin) |
dfcd3bfb | 526 | { |
c7110220 | 527 | std::string name, filename; |
dfcd3bfb JM |
528 | int unmapped = 0; |
529 | int offset = 0; | |
530 | int line = 0; | |
531 | ||
22e722e1 | 532 | if (build_address_symbolic (gdbarch, addr, do_demangle, &name, &offset, |
675dcf4f | 533 | &filename, &line, &unmapped)) |
c7110220 | 534 | return 0; |
dfcd3bfb JM |
535 | |
536 | fputs_filtered (leadin, stream); | |
537 | if (unmapped) | |
538 | fputs_filtered ("<*", stream); | |
539 | else | |
540 | fputs_filtered ("<", stream); | |
af79b68d | 541 | fputs_styled (name.c_str (), function_name_style.style (), stream); |
dfcd3bfb JM |
542 | if (offset != 0) |
543 | fprintf_filtered (stream, "+%u", (unsigned int) offset); | |
544 | ||
545 | /* Append source filename and line number if desired. Give specific | |
546 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
c7110220 | 547 | if (print_symbol_filename && !filename.empty ()) |
dfcd3bfb | 548 | { |
af79b68d TT |
549 | fputs_filtered (line == -1 ? " in " : " at ", stream); |
550 | fputs_styled (filename.c_str (), file_name_style.style (), stream); | |
dfcd3bfb | 551 | if (line != -1) |
af79b68d | 552 | fprintf_filtered (stream, ":%d", line); |
dfcd3bfb JM |
553 | } |
554 | if (unmapped) | |
555 | fputs_filtered ("*>", stream); | |
556 | else | |
557 | fputs_filtered (">", stream); | |
558 | ||
9cb709b6 | 559 | return 1; |
dfcd3bfb JM |
560 | } |
561 | ||
c7110220 TT |
562 | /* See valprint.h. */ |
563 | ||
dfcd3bfb | 564 | int |
22e722e1 DJ |
565 | build_address_symbolic (struct gdbarch *gdbarch, |
566 | CORE_ADDR addr, /* IN */ | |
dfcd3bfb | 567 | int do_demangle, /* IN */ |
c7110220 | 568 | std::string *name, /* OUT */ |
dfcd3bfb | 569 | int *offset, /* OUT */ |
c7110220 | 570 | std::string *filename, /* OUT */ |
dfcd3bfb JM |
571 | int *line, /* OUT */ |
572 | int *unmapped) /* OUT */ | |
c906108c | 573 | { |
77e371c0 | 574 | struct bound_minimal_symbol msymbol; |
c906108c | 575 | struct symbol *symbol; |
c906108c | 576 | CORE_ADDR name_location = 0; |
714835d5 | 577 | struct obj_section *section = NULL; |
0d5cff50 | 578 | const char *name_temp = ""; |
dfcd3bfb | 579 | |
89c83b10 | 580 | /* Let's say it is mapped (not unmapped). */ |
dfcd3bfb | 581 | *unmapped = 0; |
c906108c | 582 | |
dfcd3bfb | 583 | /* Determine if the address is in an overlay, and whether it is |
675dcf4f | 584 | mapped. */ |
c906108c SS |
585 | if (overlay_debugging) |
586 | { | |
587 | section = find_pc_overlay (addr); | |
588 | if (pc_in_unmapped_range (addr, section)) | |
589 | { | |
dfcd3bfb | 590 | *unmapped = 1; |
c906108c SS |
591 | addr = overlay_mapped_address (addr, section); |
592 | } | |
593 | } | |
594 | ||
c906108c SS |
595 | /* First try to find the address in the symbol table, then |
596 | in the minsyms. Take the closest one. */ | |
597 | ||
598 | /* This is defective in the sense that it only finds text symbols. So | |
599 | really this is kind of pointless--we should make sure that the | |
600 | minimal symbols have everything we need (by changing that we could | |
601 | save some memory, but for many debug format--ELF/DWARF or | |
602 | anything/stabs--it would be inconvenient to eliminate those minimal | |
603 | symbols anyway). */ | |
77e371c0 | 604 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section); |
c906108c SS |
605 | symbol = find_pc_sect_function (addr, section); |
606 | ||
607 | if (symbol) | |
608 | { | |
22e722e1 DJ |
609 | /* If this is a function (i.e. a code address), strip out any |
610 | non-address bits. For instance, display a pointer to the | |
611 | first instruction of a Thumb function as <function>; the | |
612 | second instruction will be <function+2>, even though the | |
613 | pointer is <function+3>. This matches the ISA behavior. */ | |
614 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
615 | ||
2b1ffcfd | 616 | name_location = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (symbol)); |
406fc7fb | 617 | if (do_demangle || asm_demangle) |
de5ad195 | 618 | name_temp = SYMBOL_PRINT_NAME (symbol); |
c906108c | 619 | else |
3567439c | 620 | name_temp = SYMBOL_LINKAGE_NAME (symbol); |
c906108c SS |
621 | } |
622 | ||
77e371c0 TT |
623 | if (msymbol.minsym != NULL |
624 | && MSYMBOL_HAS_SIZE (msymbol.minsym) | |
625 | && MSYMBOL_SIZE (msymbol.minsym) == 0 | |
626 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text | |
627 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text_gnu_ifunc | |
628 | && MSYMBOL_TYPE (msymbol.minsym) != mst_file_text) | |
629 | msymbol.minsym = NULL; | |
9cb709b6 | 630 | |
77e371c0 | 631 | if (msymbol.minsym != NULL) |
c906108c | 632 | { |
77e371c0 | 633 | if (BMSYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL) |
c906108c | 634 | { |
fe8400b4 WN |
635 | /* If this is a function (i.e. a code address), strip out any |
636 | non-address bits. For instance, display a pointer to the | |
637 | first instruction of a Thumb function as <function>; the | |
638 | second instruction will be <function+2>, even though the | |
639 | pointer is <function+3>. This matches the ISA behavior. */ | |
77e371c0 TT |
640 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_text |
641 | || MSYMBOL_TYPE (msymbol.minsym) == mst_text_gnu_ifunc | |
642 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_text | |
643 | || MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
fe8400b4 WN |
644 | addr = gdbarch_addr_bits_remove (gdbarch, addr); |
645 | ||
c906108c SS |
646 | /* The msymbol is closer to the address than the symbol; |
647 | use the msymbol instead. */ | |
648 | symbol = 0; | |
77e371c0 | 649 | name_location = BMSYMBOL_VALUE_ADDRESS (msymbol); |
406fc7fb | 650 | if (do_demangle || asm_demangle) |
77e371c0 | 651 | name_temp = MSYMBOL_PRINT_NAME (msymbol.minsym); |
c906108c | 652 | else |
77e371c0 | 653 | name_temp = MSYMBOL_LINKAGE_NAME (msymbol.minsym); |
c906108c SS |
654 | } |
655 | } | |
77e371c0 | 656 | if (symbol == NULL && msymbol.minsym == NULL) |
dfcd3bfb | 657 | return 1; |
c906108c | 658 | |
c906108c SS |
659 | /* If the nearest symbol is too far away, don't print anything symbolic. */ |
660 | ||
661 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
662 | CORE_ADDR. But when we detect unsigned wraparound in the | |
663 | CORE_ADDR math, we ignore this test and print the offset, | |
664 | because addr+max_symbolic_offset has wrapped through the end | |
665 | of the address space back to the beginning, giving bogus comparison. */ | |
666 | if (addr > name_location + max_symbolic_offset | |
667 | && name_location + max_symbolic_offset > name_location) | |
dfcd3bfb | 668 | return 1; |
c906108c | 669 | |
dfcd3bfb JM |
670 | *offset = addr - name_location; |
671 | ||
c7110220 | 672 | *name = name_temp; |
c906108c | 673 | |
c906108c SS |
674 | if (print_symbol_filename) |
675 | { | |
676 | struct symtab_and_line sal; | |
677 | ||
678 | sal = find_pc_sect_line (addr, section, 0); | |
679 | ||
680 | if (sal.symtab) | |
dfcd3bfb | 681 | { |
c7110220 | 682 | *filename = symtab_to_filename_for_display (sal.symtab); |
dfcd3bfb JM |
683 | *line = sal.line; |
684 | } | |
c906108c | 685 | } |
dfcd3bfb | 686 | return 0; |
c906108c SS |
687 | } |
688 | ||
c906108c SS |
689 | |
690 | /* Print address ADDR symbolically on STREAM. | |
691 | First print it as a number. Then perhaps print | |
692 | <SYMBOL + OFFSET> after the number. */ | |
693 | ||
694 | void | |
5af949e3 UW |
695 | print_address (struct gdbarch *gdbarch, |
696 | CORE_ADDR addr, struct ui_file *stream) | |
c906108c | 697 | { |
35fb8261 | 698 | fputs_styled (paddress (gdbarch, addr), address_style.style (), stream); |
22e722e1 | 699 | print_address_symbolic (gdbarch, addr, stream, asm_demangle, " "); |
c906108c SS |
700 | } |
701 | ||
2b28d209 PP |
702 | /* Return a prefix for instruction address: |
703 | "=> " for current instruction, else " ". */ | |
704 | ||
705 | const char * | |
706 | pc_prefix (CORE_ADDR addr) | |
707 | { | |
708 | if (has_stack_frames ()) | |
709 | { | |
710 | struct frame_info *frame; | |
711 | CORE_ADDR pc; | |
712 | ||
713 | frame = get_selected_frame (NULL); | |
ce406537 | 714 | if (get_frame_pc_if_available (frame, &pc) && pc == addr) |
2b28d209 PP |
715 | return "=> "; |
716 | } | |
717 | return " "; | |
718 | } | |
719 | ||
c906108c SS |
720 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE |
721 | controls whether to print the symbolic name "raw" or demangled. | |
9cb709b6 | 722 | Return non-zero if anything was printed; zero otherwise. */ |
c906108c | 723 | |
9cb709b6 | 724 | int |
edf0c1b7 TT |
725 | print_address_demangle (const struct value_print_options *opts, |
726 | struct gdbarch *gdbarch, CORE_ADDR addr, | |
5af949e3 | 727 | struct ui_file *stream, int do_demangle) |
c906108c | 728 | { |
1d51a733 | 729 | if (opts->addressprint) |
c906108c | 730 | { |
35fb8261 | 731 | fputs_styled (paddress (gdbarch, addr), address_style.style (), stream); |
22e722e1 | 732 | print_address_symbolic (gdbarch, addr, stream, do_demangle, " "); |
c906108c SS |
733 | } |
734 | else | |
735 | { | |
9cb709b6 | 736 | return print_address_symbolic (gdbarch, addr, stream, do_demangle, ""); |
c906108c | 737 | } |
9cb709b6 | 738 | return 1; |
c906108c SS |
739 | } |
740 | \f | |
741 | ||
bb556f1f TK |
742 | /* Find the address of the instruction that is INST_COUNT instructions before |
743 | the instruction at ADDR. | |
744 | Since some architectures have variable-length instructions, we can't just | |
745 | simply subtract INST_COUNT * INSN_LEN from ADDR. Instead, we use line | |
746 | number information to locate the nearest known instruction boundary, | |
747 | and disassemble forward from there. If we go out of the symbol range | |
748 | during disassembling, we return the lowest address we've got so far and | |
749 | set the number of instructions read to INST_READ. */ | |
750 | ||
751 | static CORE_ADDR | |
752 | find_instruction_backward (struct gdbarch *gdbarch, CORE_ADDR addr, | |
753 | int inst_count, int *inst_read) | |
754 | { | |
755 | /* The vector PCS is used to store instruction addresses within | |
756 | a pc range. */ | |
757 | CORE_ADDR loop_start, loop_end, p; | |
52d214d3 | 758 | std::vector<CORE_ADDR> pcs; |
bb556f1f | 759 | struct symtab_and_line sal; |
bb556f1f TK |
760 | |
761 | *inst_read = 0; | |
762 | loop_start = loop_end = addr; | |
763 | ||
764 | /* In each iteration of the outer loop, we get a pc range that ends before | |
765 | LOOP_START, then we count and store every instruction address of the range | |
766 | iterated in the loop. | |
767 | If the number of instructions counted reaches INST_COUNT, return the | |
768 | stored address that is located INST_COUNT instructions back from ADDR. | |
769 | If INST_COUNT is not reached, we subtract the number of counted | |
770 | instructions from INST_COUNT, and go to the next iteration. */ | |
771 | do | |
772 | { | |
52d214d3 | 773 | pcs.clear (); |
bb556f1f TK |
774 | sal = find_pc_sect_line (loop_start, NULL, 1); |
775 | if (sal.line <= 0) | |
776 | { | |
777 | /* We reach here when line info is not available. In this case, | |
778 | we print a message and just exit the loop. The return value | |
779 | is calculated after the loop. */ | |
780 | printf_filtered (_("No line number information available " | |
781 | "for address ")); | |
782 | wrap_here (" "); | |
783 | print_address (gdbarch, loop_start - 1, gdb_stdout); | |
784 | printf_filtered ("\n"); | |
785 | break; | |
786 | } | |
787 | ||
788 | loop_end = loop_start; | |
789 | loop_start = sal.pc; | |
790 | ||
791 | /* This loop pushes instruction addresses in the range from | |
792 | LOOP_START to LOOP_END. */ | |
793 | for (p = loop_start; p < loop_end;) | |
794 | { | |
52d214d3 | 795 | pcs.push_back (p); |
bb556f1f TK |
796 | p += gdb_insn_length (gdbarch, p); |
797 | } | |
798 | ||
52d214d3 TT |
799 | inst_count -= pcs.size (); |
800 | *inst_read += pcs.size (); | |
bb556f1f TK |
801 | } |
802 | while (inst_count > 0); | |
803 | ||
804 | /* After the loop, the vector PCS has instruction addresses of the last | |
805 | source line we processed, and INST_COUNT has a negative value. | |
806 | We return the address at the index of -INST_COUNT in the vector for | |
807 | the reason below. | |
808 | Let's assume the following instruction addresses and run 'x/-4i 0x400e'. | |
809 | Line X of File | |
810 | 0x4000 | |
811 | 0x4001 | |
812 | 0x4005 | |
813 | Line Y of File | |
814 | 0x4009 | |
815 | 0x400c | |
816 | => 0x400e | |
817 | 0x4011 | |
818 | find_instruction_backward is called with INST_COUNT = 4 and expected to | |
819 | return 0x4001. When we reach here, INST_COUNT is set to -1 because | |
820 | it was subtracted by 2 (from Line Y) and 3 (from Line X). The value | |
821 | 4001 is located at the index 1 of the last iterated line (= Line X), | |
822 | which is simply calculated by -INST_COUNT. | |
823 | The case when the length of PCS is 0 means that we reached an area for | |
824 | which line info is not available. In such case, we return LOOP_START, | |
825 | which was the lowest instruction address that had line info. */ | |
52d214d3 | 826 | p = pcs.size () > 0 ? pcs[-inst_count] : loop_start; |
bb556f1f TK |
827 | |
828 | /* INST_READ includes all instruction addresses in a pc range. Need to | |
829 | exclude the beginning part up to the address we're returning. That | |
830 | is, exclude {0x4000} in the example above. */ | |
831 | if (inst_count < 0) | |
832 | *inst_read += inst_count; | |
833 | ||
bb556f1f TK |
834 | return p; |
835 | } | |
836 | ||
837 | /* Backward read LEN bytes of target memory from address MEMADDR + LEN, | |
838 | placing the results in GDB's memory from MYADDR + LEN. Returns | |
839 | a count of the bytes actually read. */ | |
840 | ||
841 | static int | |
842 | read_memory_backward (struct gdbarch *gdbarch, | |
843 | CORE_ADDR memaddr, gdb_byte *myaddr, int len) | |
844 | { | |
845 | int errcode; | |
846 | int nread; /* Number of bytes actually read. */ | |
847 | ||
848 | /* First try a complete read. */ | |
849 | errcode = target_read_memory (memaddr, myaddr, len); | |
850 | if (errcode == 0) | |
851 | { | |
852 | /* Got it all. */ | |
853 | nread = len; | |
854 | } | |
855 | else | |
856 | { | |
857 | /* Loop, reading one byte at a time until we get as much as we can. */ | |
858 | memaddr += len; | |
859 | myaddr += len; | |
860 | for (nread = 0; nread < len; ++nread) | |
861 | { | |
862 | errcode = target_read_memory (--memaddr, --myaddr, 1); | |
863 | if (errcode != 0) | |
864 | { | |
865 | /* The read was unsuccessful, so exit the loop. */ | |
866 | printf_filtered (_("Cannot access memory at address %s\n"), | |
867 | paddress (gdbarch, memaddr)); | |
868 | break; | |
869 | } | |
870 | } | |
871 | } | |
872 | return nread; | |
873 | } | |
874 | ||
875 | /* Returns true if X (which is LEN bytes wide) is the number zero. */ | |
876 | ||
877 | static int | |
878 | integer_is_zero (const gdb_byte *x, int len) | |
879 | { | |
880 | int i = 0; | |
881 | ||
882 | while (i < len && x[i] == 0) | |
883 | ++i; | |
884 | return (i == len); | |
885 | } | |
886 | ||
887 | /* Find the start address of a string in which ADDR is included. | |
888 | Basically we search for '\0' and return the next address, | |
889 | but if OPTIONS->PRINT_MAX is smaller than the length of a string, | |
890 | we stop searching and return the address to print characters as many as | |
891 | PRINT_MAX from the string. */ | |
892 | ||
893 | static CORE_ADDR | |
894 | find_string_backward (struct gdbarch *gdbarch, | |
895 | CORE_ADDR addr, int count, int char_size, | |
896 | const struct value_print_options *options, | |
897 | int *strings_counted) | |
898 | { | |
899 | const int chunk_size = 0x20; | |
bb556f1f TK |
900 | int read_error = 0; |
901 | int chars_read = 0; | |
902 | int chars_to_read = chunk_size; | |
903 | int chars_counted = 0; | |
904 | int count_original = count; | |
905 | CORE_ADDR string_start_addr = addr; | |
906 | ||
907 | gdb_assert (char_size == 1 || char_size == 2 || char_size == 4); | |
26fcd5d7 | 908 | gdb::byte_vector buffer (chars_to_read * char_size); |
bb556f1f TK |
909 | while (count > 0 && read_error == 0) |
910 | { | |
911 | int i; | |
912 | ||
913 | addr -= chars_to_read * char_size; | |
26fcd5d7 | 914 | chars_read = read_memory_backward (gdbarch, addr, buffer.data (), |
bb556f1f TK |
915 | chars_to_read * char_size); |
916 | chars_read /= char_size; | |
917 | read_error = (chars_read == chars_to_read) ? 0 : 1; | |
918 | /* Searching for '\0' from the end of buffer in backward direction. */ | |
919 | for (i = 0; i < chars_read && count > 0 ; ++i, ++chars_counted) | |
920 | { | |
921 | int offset = (chars_to_read - i - 1) * char_size; | |
922 | ||
26fcd5d7 | 923 | if (integer_is_zero (&buffer[offset], char_size) |
bb556f1f TK |
924 | || chars_counted == options->print_max) |
925 | { | |
926 | /* Found '\0' or reached print_max. As OFFSET is the offset to | |
927 | '\0', we add CHAR_SIZE to return the start address of | |
928 | a string. */ | |
929 | --count; | |
930 | string_start_addr = addr + offset + char_size; | |
931 | chars_counted = 0; | |
932 | } | |
933 | } | |
934 | } | |
935 | ||
936 | /* Update STRINGS_COUNTED with the actual number of loaded strings. */ | |
937 | *strings_counted = count_original - count; | |
938 | ||
939 | if (read_error != 0) | |
940 | { | |
941 | /* In error case, STRING_START_ADDR is pointing to the string that | |
942 | was last successfully loaded. Rewind the partially loaded string. */ | |
943 | string_start_addr -= chars_counted * char_size; | |
944 | } | |
945 | ||
bb556f1f TK |
946 | return string_start_addr; |
947 | } | |
948 | ||
c906108c SS |
949 | /* Examine data at address ADDR in format FMT. |
950 | Fetch it from memory and print on gdb_stdout. */ | |
951 | ||
952 | static void | |
5d3729b5 | 953 | do_examine (struct format_data fmt, struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 954 | { |
52f0bd74 AC |
955 | char format = 0; |
956 | char size; | |
957 | int count = 1; | |
c906108c | 958 | struct type *val_type = NULL; |
52f0bd74 AC |
959 | int i; |
960 | int maxelts; | |
79a45b7d | 961 | struct value_print_options opts; |
bb556f1f TK |
962 | int need_to_update_next_address = 0; |
963 | CORE_ADDR addr_rewound = 0; | |
c906108c SS |
964 | |
965 | format = fmt.format; | |
966 | size = fmt.size; | |
967 | count = fmt.count; | |
5d3729b5 | 968 | next_gdbarch = gdbarch; |
c906108c | 969 | next_address = addr; |
c906108c | 970 | |
9a22f0d0 PM |
971 | /* Instruction format implies fetch single bytes |
972 | regardless of the specified size. | |
973 | The case of strings is handled in decode_format, only explicit | |
974 | size operator are not changed to 'b'. */ | |
975 | if (format == 'i') | |
c906108c SS |
976 | size = 'b'; |
977 | ||
5d3729b5 UW |
978 | if (size == 'a') |
979 | { | |
980 | /* Pick the appropriate size for an address. */ | |
981 | if (gdbarch_ptr_bit (next_gdbarch) == 64) | |
982 | size = 'g'; | |
983 | else if (gdbarch_ptr_bit (next_gdbarch) == 32) | |
984 | size = 'w'; | |
985 | else if (gdbarch_ptr_bit (next_gdbarch) == 16) | |
986 | size = 'h'; | |
987 | else | |
988 | /* Bad value for gdbarch_ptr_bit. */ | |
989 | internal_error (__FILE__, __LINE__, | |
990 | _("failed internal consistency check")); | |
991 | } | |
992 | ||
993 | if (size == 'b') | |
df4df182 | 994 | val_type = builtin_type (next_gdbarch)->builtin_int8; |
c906108c | 995 | else if (size == 'h') |
df4df182 | 996 | val_type = builtin_type (next_gdbarch)->builtin_int16; |
c906108c | 997 | else if (size == 'w') |
df4df182 | 998 | val_type = builtin_type (next_gdbarch)->builtin_int32; |
c906108c | 999 | else if (size == 'g') |
df4df182 | 1000 | val_type = builtin_type (next_gdbarch)->builtin_int64; |
c906108c | 1001 | |
9a22f0d0 PM |
1002 | if (format == 's') |
1003 | { | |
1004 | struct type *char_type = NULL; | |
ad3bbd48 | 1005 | |
9a22f0d0 PM |
1006 | /* Search for "char16_t" or "char32_t" types or fall back to 8-bit char |
1007 | if type is not found. */ | |
1008 | if (size == 'h') | |
1009 | char_type = builtin_type (next_gdbarch)->builtin_char16; | |
1010 | else if (size == 'w') | |
1011 | char_type = builtin_type (next_gdbarch)->builtin_char32; | |
1012 | if (char_type) | |
1013 | val_type = char_type; | |
1014 | else | |
1015 | { | |
1016 | if (size != '\0' && size != 'b') | |
0df8b418 MS |
1017 | warning (_("Unable to display strings with " |
1018 | "size '%c', using 'b' instead."), size); | |
9a22f0d0 PM |
1019 | size = 'b'; |
1020 | val_type = builtin_type (next_gdbarch)->builtin_int8; | |
1021 | } | |
1022 | } | |
1023 | ||
c906108c SS |
1024 | maxelts = 8; |
1025 | if (size == 'w') | |
1026 | maxelts = 4; | |
1027 | if (size == 'g') | |
1028 | maxelts = 2; | |
1029 | if (format == 's' || format == 'i') | |
1030 | maxelts = 1; | |
1031 | ||
79a45b7d TT |
1032 | get_formatted_print_options (&opts, format); |
1033 | ||
bb556f1f TK |
1034 | if (count < 0) |
1035 | { | |
1036 | /* This is the negative repeat count case. | |
1037 | We rewind the address based on the given repeat count and format, | |
1038 | then examine memory from there in forward direction. */ | |
1039 | ||
1040 | count = -count; | |
1041 | if (format == 'i') | |
1042 | { | |
1043 | next_address = find_instruction_backward (gdbarch, addr, count, | |
1044 | &count); | |
1045 | } | |
1046 | else if (format == 's') | |
1047 | { | |
1048 | next_address = find_string_backward (gdbarch, addr, count, | |
1049 | TYPE_LENGTH (val_type), | |
1050 | &opts, &count); | |
1051 | } | |
1052 | else | |
1053 | { | |
1054 | next_address = addr - count * TYPE_LENGTH (val_type); | |
1055 | } | |
1056 | ||
1057 | /* The following call to print_formatted updates next_address in every | |
1058 | iteration. In backward case, we store the start address here | |
1059 | and update next_address with it before exiting the function. */ | |
1060 | addr_rewound = (format == 's' | |
1061 | ? next_address - TYPE_LENGTH (val_type) | |
1062 | : next_address); | |
1063 | need_to_update_next_address = 1; | |
1064 | } | |
1065 | ||
c906108c SS |
1066 | /* Print as many objects as specified in COUNT, at most maxelts per line, |
1067 | with the address of the next one at the start of each line. */ | |
1068 | ||
1069 | while (count > 0) | |
1070 | { | |
1071 | QUIT; | |
2b28d209 PP |
1072 | if (format == 'i') |
1073 | fputs_filtered (pc_prefix (next_address), gdb_stdout); | |
5af949e3 | 1074 | print_address (next_gdbarch, next_address, gdb_stdout); |
c906108c SS |
1075 | printf_filtered (":"); |
1076 | for (i = maxelts; | |
1077 | i > 0 && count > 0; | |
1078 | i--, count--) | |
1079 | { | |
1080 | printf_filtered ("\t"); | |
1081 | /* Note that print_formatted sets next_address for the next | |
1082 | object. */ | |
1083 | last_examine_address = next_address; | |
1084 | ||
c906108c | 1085 | /* The value to be displayed is not fetched greedily. |
5d51a2db MR |
1086 | Instead, to avoid the possibility of a fetched value not |
1087 | being used, its retrieval is delayed until the print code | |
c5aa993b JM |
1088 | uses it. When examining an instruction stream, the |
1089 | disassembler will perform its own memory fetch using just | |
1090 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
1091 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
1092 | is left with the byte sequence from the last complete | |
0df8b418 | 1093 | instruction fetched from memory? */ |
9b558729 TT |
1094 | last_examine_value |
1095 | = release_value (value_at_lazy (val_type, next_address)); | |
c906108c | 1096 | |
9b558729 | 1097 | print_formatted (last_examine_value.get (), size, &opts, gdb_stdout); |
a4642986 MR |
1098 | |
1099 | /* Display any branch delay slots following the final insn. */ | |
1100 | if (format == 'i' && count == 1) | |
1101 | count += branch_delay_insns; | |
c906108c SS |
1102 | } |
1103 | printf_filtered ("\n"); | |
c906108c | 1104 | } |
bb556f1f TK |
1105 | |
1106 | if (need_to_update_next_address) | |
1107 | next_address = addr_rewound; | |
c906108c SS |
1108 | } |
1109 | \f | |
1110 | static void | |
8d89f51a | 1111 | validate_format (struct format_data fmt, const char *cmdname) |
c906108c SS |
1112 | { |
1113 | if (fmt.size != 0) | |
8a3fe4f8 | 1114 | error (_("Size letters are meaningless in \"%s\" command."), cmdname); |
c906108c | 1115 | if (fmt.count != 1) |
8a3fe4f8 | 1116 | error (_("Item count other than 1 is meaningless in \"%s\" command."), |
c906108c | 1117 | cmdname); |
ea37ba09 | 1118 | if (fmt.format == 'i') |
8a3fe4f8 | 1119 | error (_("Format letter \"%c\" is meaningless in \"%s\" command."), |
c906108c SS |
1120 | fmt.format, cmdname); |
1121 | } | |
1122 | ||
7d8062de | 1123 | /* Parse print command format string into *OPTS and update *EXPP. |
1c88ceb1 JK |
1124 | CMDNAME should name the current command. */ |
1125 | ||
1126 | void | |
1127 | print_command_parse_format (const char **expp, const char *cmdname, | |
7d8062de | 1128 | value_print_options *opts) |
1c88ceb1 JK |
1129 | { |
1130 | const char *exp = *expp; | |
1131 | ||
1132 | if (exp && *exp == '/') | |
1133 | { | |
7d8062de PA |
1134 | format_data fmt; |
1135 | ||
1c88ceb1 | 1136 | exp++; |
7d8062de PA |
1137 | fmt = decode_format (&exp, last_format, 0); |
1138 | validate_format (fmt, cmdname); | |
1139 | last_format = fmt.format; | |
1140 | ||
1141 | opts->format = fmt.format; | |
1142 | opts->raw = fmt.raw; | |
1c88ceb1 JK |
1143 | } |
1144 | else | |
1145 | { | |
7d8062de PA |
1146 | opts->format = 0; |
1147 | opts->raw = 0; | |
1c88ceb1 JK |
1148 | } |
1149 | ||
1150 | *expp = exp; | |
1151 | } | |
1152 | ||
7d8062de | 1153 | /* See valprint.h. */ |
1c88ceb1 JK |
1154 | |
1155 | void | |
7d8062de | 1156 | print_value (value *val, const value_print_options &opts) |
1c88ceb1 | 1157 | { |
1c88ceb1 JK |
1158 | int histindex = record_latest_value (val); |
1159 | ||
1160 | annotate_value_history_begin (histindex, value_type (val)); | |
1161 | ||
1162 | printf_filtered ("$%d = ", histindex); | |
1163 | ||
1164 | annotate_value_history_value (); | |
1165 | ||
7d8062de | 1166 | print_formatted (val, 0, &opts, gdb_stdout); |
1c88ceb1 JK |
1167 | printf_filtered ("\n"); |
1168 | ||
1169 | annotate_value_history_end (); | |
1170 | } | |
1171 | ||
7d8062de | 1172 | /* Implementation of the "print" and "call" commands. */ |
c906108c SS |
1173 | |
1174 | static void | |
7d8062de | 1175 | print_command_1 (const char *args, int voidprint) |
c906108c | 1176 | { |
3d6d86c6 | 1177 | struct value *val; |
7d8062de PA |
1178 | value_print_options print_opts; |
1179 | ||
1180 | get_user_print_options (&print_opts); | |
1181 | /* Override global settings with explicit options, if any. */ | |
1182 | auto group = make_value_print_options_def_group (&print_opts); | |
1183 | gdb::option::process_options | |
1184 | (&args, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group); | |
1185 | ||
1186 | print_command_parse_format (&args, "print", &print_opts); | |
c906108c | 1187 | |
7d8062de | 1188 | const char *exp = args; |
c906108c | 1189 | |
7d8062de | 1190 | if (exp != nullptr && *exp) |
c906108c | 1191 | { |
4d01a485 PA |
1192 | expression_up expr = parse_expression (exp); |
1193 | val = evaluate_expression (expr.get ()); | |
c906108c SS |
1194 | } |
1195 | else | |
1196 | val = access_value_history (0); | |
1197 | ||
df407dfe AC |
1198 | if (voidprint || (val && value_type (val) && |
1199 | TYPE_CODE (value_type (val)) != TYPE_CODE_VOID)) | |
7d8062de PA |
1200 | print_value (val, print_opts); |
1201 | } | |
1202 | ||
1203 | /* See valprint.h. */ | |
1204 | ||
1205 | void | |
1206 | print_command_completer (struct cmd_list_element *ignore, | |
1207 | completion_tracker &tracker, | |
1208 | const char *text, const char * /*word*/) | |
1209 | { | |
1210 | const auto group = make_value_print_options_def_group (nullptr); | |
1211 | if (gdb::option::complete_options | |
1212 | (tracker, &text, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group)) | |
1213 | return; | |
1214 | ||
1215 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
1216 | expression_completer (ignore, tracker, text, word); | |
c906108c SS |
1217 | } |
1218 | ||
c906108c | 1219 | static void |
0b39b52e | 1220 | print_command (const char *exp, int from_tty) |
c906108c | 1221 | { |
e93a8774 | 1222 | print_command_1 (exp, 1); |
c906108c SS |
1223 | } |
1224 | ||
675dcf4f | 1225 | /* Same as print, except it doesn't print void results. */ |
c906108c | 1226 | static void |
0b39b52e | 1227 | call_command (const char *exp, int from_tty) |
c906108c | 1228 | { |
e93a8774 | 1229 | print_command_1 (exp, 0); |
c906108c SS |
1230 | } |
1231 | ||
6f937416 PA |
1232 | /* Implementation of the "output" command. */ |
1233 | ||
6f937416 | 1234 | void |
122b53ea | 1235 | output_command (const char *exp, int from_tty) |
c906108c | 1236 | { |
52f0bd74 | 1237 | char format = 0; |
3d6d86c6 | 1238 | struct value *val; |
c906108c | 1239 | struct format_data fmt; |
79a45b7d | 1240 | struct value_print_options opts; |
c906108c | 1241 | |
777ea8f1 | 1242 | fmt.size = 0; |
a6bac58e | 1243 | fmt.raw = 0; |
777ea8f1 | 1244 | |
c906108c SS |
1245 | if (exp && *exp == '/') |
1246 | { | |
1247 | exp++; | |
1248 | fmt = decode_format (&exp, 0, 0); | |
1249 | validate_format (fmt, "output"); | |
1250 | format = fmt.format; | |
1251 | } | |
1252 | ||
4d01a485 | 1253 | expression_up expr = parse_expression (exp); |
c906108c | 1254 | |
4d01a485 | 1255 | val = evaluate_expression (expr.get ()); |
c906108c | 1256 | |
df407dfe | 1257 | annotate_value_begin (value_type (val)); |
c906108c | 1258 | |
79a45b7d | 1259 | get_formatted_print_options (&opts, format); |
a6bac58e | 1260 | opts.raw = fmt.raw; |
79a45b7d | 1261 | print_formatted (val, fmt.size, &opts, gdb_stdout); |
c906108c SS |
1262 | |
1263 | annotate_value_end (); | |
1264 | ||
2acceee2 JM |
1265 | wrap_here (""); |
1266 | gdb_flush (gdb_stdout); | |
c906108c SS |
1267 | } |
1268 | ||
c906108c | 1269 | static void |
981a3fb3 | 1270 | set_command (const char *exp, int from_tty) |
c906108c | 1271 | { |
4d01a485 | 1272 | expression_up expr = parse_expression (exp); |
ad3bbd48 | 1273 | |
0ece64fd TG |
1274 | if (expr->nelts >= 1) |
1275 | switch (expr->elts[0].opcode) | |
1276 | { | |
1277 | case UNOP_PREINCREMENT: | |
1278 | case UNOP_POSTINCREMENT: | |
1279 | case UNOP_PREDECREMENT: | |
1280 | case UNOP_POSTDECREMENT: | |
1281 | case BINOP_ASSIGN: | |
1282 | case BINOP_ASSIGN_MODIFY: | |
1283 | case BINOP_COMMA: | |
1284 | break; | |
1285 | default: | |
1286 | warning | |
1287 | (_("Expression is not an assignment (and might have no effect)")); | |
1288 | } | |
52b3699b | 1289 | |
4d01a485 | 1290 | evaluate_expression (expr.get ()); |
c906108c SS |
1291 | } |
1292 | ||
c906108c | 1293 | static void |
1d12d88f | 1294 | info_symbol_command (const char *arg, int from_tty) |
c906108c SS |
1295 | { |
1296 | struct minimal_symbol *msymbol; | |
c5aa993b | 1297 | struct obj_section *osect; |
c5aa993b JM |
1298 | CORE_ADDR addr, sect_addr; |
1299 | int matches = 0; | |
1300 | unsigned int offset; | |
c906108c SS |
1301 | |
1302 | if (!arg) | |
e2e0b3e5 | 1303 | error_no_arg (_("address")); |
c906108c SS |
1304 | |
1305 | addr = parse_and_eval_address (arg); | |
2030c079 | 1306 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 | 1307 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
c5aa993b | 1308 | { |
3b9d3ac2 TT |
1309 | /* Only process each object file once, even if there's a separate |
1310 | debug file. */ | |
1311 | if (objfile->separate_debug_objfile_backlink) | |
1312 | continue; | |
1313 | ||
1314 | sect_addr = overlay_mapped_address (addr, osect); | |
1315 | ||
1316 | if (obj_section_addr (osect) <= sect_addr | |
1317 | && sect_addr < obj_section_endaddr (osect) | |
1318 | && (msymbol | |
1319 | = lookup_minimal_symbol_by_pc_section (sect_addr, | |
1320 | osect).minsym)) | |
5178ed48 | 1321 | { |
3b9d3ac2 TT |
1322 | const char *obj_name, *mapped, *sec_name, *msym_name; |
1323 | const char *loc_string; | |
1324 | ||
1325 | matches = 1; | |
1326 | offset = sect_addr - MSYMBOL_VALUE_ADDRESS (objfile, msymbol); | |
1327 | mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped"); | |
1328 | sec_name = osect->the_bfd_section->name; | |
1329 | msym_name = MSYMBOL_PRINT_NAME (msymbol); | |
1330 | ||
1331 | /* Don't print the offset if it is zero. | |
1332 | We assume there's no need to handle i18n of "sym + offset". */ | |
1333 | std::string string_holder; | |
1334 | if (offset) | |
1335 | { | |
1336 | string_holder = string_printf ("%s + %u", msym_name, offset); | |
1337 | loc_string = string_holder.c_str (); | |
1338 | } | |
c14c28ba | 1339 | else |
3b9d3ac2 TT |
1340 | loc_string = msym_name; |
1341 | ||
1342 | gdb_assert (osect->objfile && objfile_name (osect->objfile)); | |
1343 | obj_name = objfile_name (osect->objfile); | |
1344 | ||
1345 | if (MULTI_OBJFILE_P ()) | |
1346 | if (pc_in_unmapped_range (addr, osect)) | |
1347 | if (section_is_overlay (osect)) | |
1348 | printf_filtered (_("%s in load address range of " | |
1349 | "%s overlay section %s of %s\n"), | |
1350 | loc_string, mapped, sec_name, obj_name); | |
1351 | else | |
1352 | printf_filtered (_("%s in load address range of " | |
1353 | "section %s of %s\n"), | |
1354 | loc_string, sec_name, obj_name); | |
1355 | else | |
1356 | if (section_is_overlay (osect)) | |
1357 | printf_filtered (_("%s in %s overlay section %s of %s\n"), | |
1358 | loc_string, mapped, sec_name, obj_name); | |
1359 | else | |
1360 | printf_filtered (_("%s in section %s of %s\n"), | |
1361 | loc_string, sec_name, obj_name); | |
c14c28ba | 1362 | else |
3b9d3ac2 TT |
1363 | if (pc_in_unmapped_range (addr, osect)) |
1364 | if (section_is_overlay (osect)) | |
1365 | printf_filtered (_("%s in load address range of %s overlay " | |
1366 | "section %s\n"), | |
1367 | loc_string, mapped, sec_name); | |
1368 | else | |
1369 | printf_filtered | |
1370 | (_("%s in load address range of section %s\n"), | |
1371 | loc_string, sec_name); | |
1372 | else | |
1373 | if (section_is_overlay (osect)) | |
1374 | printf_filtered (_("%s in %s overlay section %s\n"), | |
1375 | loc_string, mapped, sec_name); | |
1376 | else | |
1377 | printf_filtered (_("%s in section %s\n"), | |
1378 | loc_string, sec_name); | |
1379 | } | |
c5aa993b | 1380 | } |
c906108c | 1381 | if (matches == 0) |
a3f17187 | 1382 | printf_filtered (_("No symbol matches %s.\n"), arg); |
c906108c SS |
1383 | } |
1384 | ||
c906108c | 1385 | static void |
1d12d88f | 1386 | info_address_command (const char *exp, int from_tty) |
c906108c | 1387 | { |
768a979c UW |
1388 | struct gdbarch *gdbarch; |
1389 | int regno; | |
52f0bd74 | 1390 | struct symbol *sym; |
7c7b6655 | 1391 | struct bound_minimal_symbol msymbol; |
52f0bd74 | 1392 | long val; |
714835d5 | 1393 | struct obj_section *section; |
08922a10 | 1394 | CORE_ADDR load_addr, context_pc = 0; |
1993b719 | 1395 | struct field_of_this_result is_a_field_of_this; |
c906108c SS |
1396 | |
1397 | if (exp == 0) | |
8a3fe4f8 | 1398 | error (_("Argument required.")); |
c906108c | 1399 | |
08922a10 | 1400 | sym = lookup_symbol (exp, get_selected_block (&context_pc), VAR_DOMAIN, |
d12307c1 | 1401 | &is_a_field_of_this).symbol; |
c906108c SS |
1402 | if (sym == NULL) |
1403 | { | |
1993b719 | 1404 | if (is_a_field_of_this.type != NULL) |
c906108c SS |
1405 | { |
1406 | printf_filtered ("Symbol \""); | |
1407 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1408 | current_language->la_language, DMGL_ANSI); | |
e2b23ee9 AF |
1409 | printf_filtered ("\" is a field of the local class variable "); |
1410 | if (current_language->la_language == language_objc) | |
2625d86c | 1411 | printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */ |
e2b23ee9 | 1412 | else |
2625d86c | 1413 | printf_filtered ("`this'\n"); |
c906108c SS |
1414 | return; |
1415 | } | |
1416 | ||
7c7b6655 | 1417 | msymbol = lookup_bound_minimal_symbol (exp); |
c906108c | 1418 | |
7c7b6655 | 1419 | if (msymbol.minsym != NULL) |
c906108c | 1420 | { |
7c7b6655 | 1421 | struct objfile *objfile = msymbol.objfile; |
e27d198c TT |
1422 | |
1423 | gdbarch = get_objfile_arch (objfile); | |
77e371c0 | 1424 | load_addr = BMSYMBOL_VALUE_ADDRESS (msymbol); |
c906108c SS |
1425 | |
1426 | printf_filtered ("Symbol \""); | |
1427 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1428 | current_language->la_language, DMGL_ANSI); | |
1429 | printf_filtered ("\" is at "); | |
35fb8261 TT |
1430 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1431 | gdb_stdout); | |
c906108c | 1432 | printf_filtered (" in a file compiled without debugging"); |
efd66ac6 | 1433 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
c906108c SS |
1434 | if (section_is_overlay (section)) |
1435 | { | |
1436 | load_addr = overlay_unmapped_address (load_addr, section); | |
1437 | printf_filtered (",\n -- loaded at "); | |
35fb8261 TT |
1438 | fputs_styled (paddress (gdbarch, load_addr), |
1439 | address_style.style (), | |
1440 | gdb_stdout); | |
714835d5 UW |
1441 | printf_filtered (" in overlay section %s", |
1442 | section->the_bfd_section->name); | |
c906108c SS |
1443 | } |
1444 | printf_filtered (".\n"); | |
1445 | } | |
1446 | else | |
8a3fe4f8 | 1447 | error (_("No symbol \"%s\" in current context."), exp); |
c906108c SS |
1448 | return; |
1449 | } | |
1450 | ||
1451 | printf_filtered ("Symbol \""); | |
3567439c | 1452 | fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym), |
c906108c SS |
1453 | current_language->la_language, DMGL_ANSI); |
1454 | printf_filtered ("\" is "); | |
c5aa993b | 1455 | val = SYMBOL_VALUE (sym); |
1994afbf DE |
1456 | if (SYMBOL_OBJFILE_OWNED (sym)) |
1457 | section = SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym); | |
1458 | else | |
1459 | section = NULL; | |
08be3fe3 | 1460 | gdbarch = symbol_arch (sym); |
c906108c | 1461 | |
24d6c2a0 TT |
1462 | if (SYMBOL_COMPUTED_OPS (sym) != NULL) |
1463 | { | |
1464 | SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, context_pc, | |
1465 | gdb_stdout); | |
1466 | printf_filtered (".\n"); | |
1467 | return; | |
1468 | } | |
1469 | ||
c906108c SS |
1470 | switch (SYMBOL_CLASS (sym)) |
1471 | { | |
1472 | case LOC_CONST: | |
1473 | case LOC_CONST_BYTES: | |
1474 | printf_filtered ("constant"); | |
1475 | break; | |
1476 | ||
1477 | case LOC_LABEL: | |
1478 | printf_filtered ("a label at address "); | |
5af949e3 | 1479 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
35fb8261 TT |
1480 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1481 | gdb_stdout); | |
c906108c SS |
1482 | if (section_is_overlay (section)) |
1483 | { | |
1484 | load_addr = overlay_unmapped_address (load_addr, section); | |
1485 | printf_filtered (",\n -- loaded at "); | |
35fb8261 TT |
1486 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1487 | gdb_stdout); | |
714835d5 UW |
1488 | printf_filtered (" in overlay section %s", |
1489 | section->the_bfd_section->name); | |
c906108c SS |
1490 | } |
1491 | break; | |
1492 | ||
4c2df51b | 1493 | case LOC_COMPUTED: |
24d6c2a0 | 1494 | gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method")); |
4c2df51b | 1495 | |
c906108c | 1496 | case LOC_REGISTER: |
768a979c UW |
1497 | /* GDBARCH is the architecture associated with the objfile the symbol |
1498 | is defined in; the target architecture may be different, and may | |
1499 | provide additional registers. However, we do not know the target | |
1500 | architecture at this point. We assume the objfile architecture | |
1501 | will contain all the standard registers that occur in debug info | |
1502 | in that objfile. */ | |
1503 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
1504 | ||
2a2d4dc3 AS |
1505 | if (SYMBOL_IS_ARGUMENT (sym)) |
1506 | printf_filtered (_("an argument in register %s"), | |
768a979c | 1507 | gdbarch_register_name (gdbarch, regno)); |
2a2d4dc3 AS |
1508 | else |
1509 | printf_filtered (_("a variable in register %s"), | |
768a979c | 1510 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1511 | break; |
1512 | ||
1513 | case LOC_STATIC: | |
a3f17187 | 1514 | printf_filtered (_("static storage at address ")); |
5af949e3 | 1515 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
35fb8261 TT |
1516 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1517 | gdb_stdout); | |
c906108c SS |
1518 | if (section_is_overlay (section)) |
1519 | { | |
1520 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1521 | printf_filtered (_(",\n -- loaded at ")); |
35fb8261 TT |
1522 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1523 | gdb_stdout); | |
714835d5 UW |
1524 | printf_filtered (_(" in overlay section %s"), |
1525 | section->the_bfd_section->name); | |
c906108c SS |
1526 | } |
1527 | break; | |
1528 | ||
c906108c | 1529 | case LOC_REGPARM_ADDR: |
768a979c UW |
1530 | /* Note comment at LOC_REGISTER. */ |
1531 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
675dcf4f | 1532 | printf_filtered (_("address of an argument in register %s"), |
768a979c | 1533 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1534 | break; |
1535 | ||
1536 | case LOC_ARG: | |
a3f17187 | 1537 | printf_filtered (_("an argument at offset %ld"), val); |
c906108c SS |
1538 | break; |
1539 | ||
c906108c | 1540 | case LOC_LOCAL: |
a3f17187 | 1541 | printf_filtered (_("a local variable at frame offset %ld"), val); |
c906108c SS |
1542 | break; |
1543 | ||
1544 | case LOC_REF_ARG: | |
a3f17187 | 1545 | printf_filtered (_("a reference argument at offset %ld"), val); |
c906108c SS |
1546 | break; |
1547 | ||
c906108c | 1548 | case LOC_TYPEDEF: |
a3f17187 | 1549 | printf_filtered (_("a typedef")); |
c906108c SS |
1550 | break; |
1551 | ||
1552 | case LOC_BLOCK: | |
a3f17187 | 1553 | printf_filtered (_("a function at address ")); |
2b1ffcfd | 1554 | load_addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
35fb8261 TT |
1555 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1556 | gdb_stdout); | |
c906108c SS |
1557 | if (section_is_overlay (section)) |
1558 | { | |
1559 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1560 | printf_filtered (_(",\n -- loaded at ")); |
35fb8261 TT |
1561 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1562 | gdb_stdout); | |
714835d5 UW |
1563 | printf_filtered (_(" in overlay section %s"), |
1564 | section->the_bfd_section->name); | |
c906108c SS |
1565 | } |
1566 | break; | |
1567 | ||
1568 | case LOC_UNRESOLVED: | |
1569 | { | |
e27d198c | 1570 | struct bound_minimal_symbol msym; |
c906108c | 1571 | |
64cc34d8 | 1572 | msym = lookup_bound_minimal_symbol (SYMBOL_LINKAGE_NAME (sym)); |
e27d198c | 1573 | if (msym.minsym == NULL) |
c906108c SS |
1574 | printf_filtered ("unresolved"); |
1575 | else | |
1576 | { | |
efd66ac6 | 1577 | section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
e0740f77 JK |
1578 | |
1579 | if (section | |
1580 | && (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0) | |
5382cfab PW |
1581 | { |
1582 | load_addr = MSYMBOL_VALUE_RAW_ADDRESS (msym.minsym); | |
1583 | printf_filtered (_("a thread-local variable at offset %s " | |
1584 | "in the thread-local storage for `%s'"), | |
1585 | paddress (gdbarch, load_addr), | |
1586 | objfile_name (section->objfile)); | |
1587 | } | |
e0740f77 | 1588 | else |
c906108c | 1589 | { |
5382cfab | 1590 | load_addr = BMSYMBOL_VALUE_ADDRESS (msym); |
e0740f77 | 1591 | printf_filtered (_("static storage at address ")); |
35fb8261 TT |
1592 | fputs_styled (paddress (gdbarch, load_addr), |
1593 | address_style.style (), gdb_stdout); | |
e0740f77 JK |
1594 | if (section_is_overlay (section)) |
1595 | { | |
1596 | load_addr = overlay_unmapped_address (load_addr, section); | |
1597 | printf_filtered (_(",\n -- loaded at ")); | |
35fb8261 TT |
1598 | fputs_styled (paddress (gdbarch, load_addr), |
1599 | address_style.style (), | |
1600 | gdb_stdout); | |
e0740f77 JK |
1601 | printf_filtered (_(" in overlay section %s"), |
1602 | section->the_bfd_section->name); | |
1603 | } | |
c906108c SS |
1604 | } |
1605 | } | |
1606 | } | |
1607 | break; | |
1608 | ||
c906108c | 1609 | case LOC_OPTIMIZED_OUT: |
a3f17187 | 1610 | printf_filtered (_("optimized out")); |
c906108c | 1611 | break; |
c5aa993b | 1612 | |
c906108c | 1613 | default: |
a3f17187 | 1614 | printf_filtered (_("of unknown (botched) type")); |
c906108c SS |
1615 | break; |
1616 | } | |
1617 | printf_filtered (".\n"); | |
1618 | } | |
1619 | \f | |
675dcf4f MK |
1620 | |
1621 | static void | |
0b39b52e | 1622 | x_command (const char *exp, int from_tty) |
c906108c | 1623 | { |
c906108c | 1624 | struct format_data fmt; |
c906108c SS |
1625 | struct value *val; |
1626 | ||
a6bac58e | 1627 | fmt.format = last_format ? last_format : 'x'; |
c906108c SS |
1628 | fmt.size = last_size; |
1629 | fmt.count = 1; | |
a6bac58e | 1630 | fmt.raw = 0; |
c906108c | 1631 | |
9be2ae8f TT |
1632 | /* If there is no expression and no format, use the most recent |
1633 | count. */ | |
1634 | if (exp == nullptr && last_count > 0) | |
1635 | fmt.count = last_count; | |
1636 | ||
c906108c SS |
1637 | if (exp && *exp == '/') |
1638 | { | |
6f937416 PA |
1639 | const char *tmp = exp + 1; |
1640 | ||
1641 | fmt = decode_format (&tmp, last_format, last_size); | |
1642 | exp = (char *) tmp; | |
c906108c SS |
1643 | } |
1644 | ||
9be2ae8f TT |
1645 | last_count = fmt.count; |
1646 | ||
c906108c SS |
1647 | /* If we have an expression, evaluate it and use it as the address. */ |
1648 | ||
1649 | if (exp != 0 && *exp != 0) | |
1650 | { | |
4d01a485 | 1651 | expression_up expr = parse_expression (exp); |
675dcf4f MK |
1652 | /* Cause expression not to be there any more if this command is |
1653 | repeated with Newline. But don't clobber a user-defined | |
1654 | command's definition. */ | |
c906108c | 1655 | if (from_tty) |
85c4be7c | 1656 | set_repeat_arguments (""); |
4d01a485 | 1657 | val = evaluate_expression (expr.get ()); |
aa006118 | 1658 | if (TYPE_IS_REFERENCE (value_type (val))) |
e1c34c5d | 1659 | val = coerce_ref (val); |
c906108c | 1660 | /* In rvalue contexts, such as this, functions are coerced into |
c5aa993b | 1661 | pointers to functions. This makes "x/i main" work. */ |
c0d8fd9a | 1662 | if (/* last_format == 'i' && */ |
df407dfe | 1663 | TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC |
c5aa993b | 1664 | && VALUE_LVAL (val) == lval_memory) |
42ae5230 | 1665 | next_address = value_address (val); |
c906108c | 1666 | else |
1aa20aa8 | 1667 | next_address = value_as_address (val); |
5d3729b5 UW |
1668 | |
1669 | next_gdbarch = expr->gdbarch; | |
c906108c SS |
1670 | } |
1671 | ||
5d3729b5 UW |
1672 | if (!next_gdbarch) |
1673 | error_no_arg (_("starting display address")); | |
1674 | ||
1675 | do_examine (fmt, next_gdbarch, next_address); | |
c906108c | 1676 | |
675dcf4f | 1677 | /* If the examine succeeds, we remember its size and format for next |
9a22f0d0 PM |
1678 | time. Set last_size to 'b' for strings. */ |
1679 | if (fmt.format == 's') | |
1680 | last_size = 'b'; | |
1681 | else | |
1682 | last_size = fmt.size; | |
c906108c SS |
1683 | last_format = fmt.format; |
1684 | ||
0df8b418 | 1685 | /* Set a couple of internal variables if appropriate. */ |
9b558729 | 1686 | if (last_examine_value != nullptr) |
c906108c SS |
1687 | { |
1688 | /* Make last address examined available to the user as $_. Use | |
c5aa993b | 1689 | the correct pointer type. */ |
4478b372 | 1690 | struct type *pointer_type |
9b558729 | 1691 | = lookup_pointer_type (value_type (last_examine_value.get ())); |
c906108c | 1692 | set_internalvar (lookup_internalvar ("_"), |
4478b372 JB |
1693 | value_from_pointer (pointer_type, |
1694 | last_examine_address)); | |
c5aa993b | 1695 | |
675dcf4f MK |
1696 | /* Make contents of last address examined available to the user |
1697 | as $__. If the last value has not been fetched from memory | |
1698 | then don't fetch it now; instead mark it by voiding the $__ | |
1699 | variable. */ | |
9b558729 | 1700 | if (value_lazy (last_examine_value.get ())) |
4fa62494 | 1701 | clear_internalvar (lookup_internalvar ("__")); |
c906108c | 1702 | else |
9b558729 | 1703 | set_internalvar (lookup_internalvar ("__"), last_examine_value.get ()); |
c906108c SS |
1704 | } |
1705 | } | |
c906108c | 1706 | \f |
c5aa993b | 1707 | |
c906108c SS |
1708 | /* Add an expression to the auto-display chain. |
1709 | Specify the expression. */ | |
1710 | ||
1711 | static void | |
0b39b52e | 1712 | display_command (const char *arg, int from_tty) |
c906108c SS |
1713 | { |
1714 | struct format_data fmt; | |
fe978cb0 | 1715 | struct display *newobj; |
6f937416 | 1716 | const char *exp = arg; |
c906108c | 1717 | |
7bd0be3a | 1718 | if (exp == 0) |
c906108c | 1719 | { |
7bd0be3a AB |
1720 | do_displays (); |
1721 | return; | |
1722 | } | |
c906108c | 1723 | |
7bd0be3a AB |
1724 | if (*exp == '/') |
1725 | { | |
1726 | exp++; | |
1727 | fmt = decode_format (&exp, 0, 0); | |
1728 | if (fmt.size && fmt.format == 0) | |
1729 | fmt.format = 'x'; | |
1730 | if (fmt.format == 'i' || fmt.format == 's') | |
1731 | fmt.size = 'b'; | |
1732 | } | |
1733 | else | |
1734 | { | |
1735 | fmt.format = 0; | |
1736 | fmt.size = 0; | |
1737 | fmt.count = 0; | |
1738 | fmt.raw = 0; | |
1739 | } | |
c906108c | 1740 | |
699bd4cf TT |
1741 | innermost_block_tracker tracker; |
1742 | expression_up expr = parse_expression (exp, &tracker); | |
c906108c | 1743 | |
4d01a485 | 1744 | newobj = new display (); |
c906108c | 1745 | |
7bd0be3a | 1746 | newobj->exp_string = xstrdup (exp); |
b22e99fd | 1747 | newobj->exp = std::move (expr); |
699bd4cf | 1748 | newobj->block = tracker.block (); |
7bd0be3a | 1749 | newobj->pspace = current_program_space; |
7bd0be3a AB |
1750 | newobj->number = ++display_number; |
1751 | newobj->format = fmt; | |
1752 | newobj->enabled_p = 1; | |
62147a22 PA |
1753 | newobj->next = NULL; |
1754 | ||
1755 | if (display_chain == NULL) | |
1756 | display_chain = newobj; | |
1757 | else | |
1758 | { | |
1759 | struct display *last; | |
1760 | ||
1761 | for (last = display_chain; last->next != NULL; last = last->next) | |
1762 | ; | |
1763 | last->next = newobj; | |
1764 | } | |
c906108c | 1765 | |
7bd0be3a AB |
1766 | if (from_tty) |
1767 | do_one_display (newobj); | |
c906108c | 1768 | |
7bd0be3a | 1769 | dont_repeat (); |
c906108c SS |
1770 | } |
1771 | ||
1772 | static void | |
fba45db2 | 1773 | free_display (struct display *d) |
c906108c | 1774 | { |
fa8a61dc | 1775 | xfree (d->exp_string); |
4d01a485 | 1776 | delete d; |
c906108c SS |
1777 | } |
1778 | ||
675dcf4f MK |
1779 | /* Clear out the display_chain. Done when new symtabs are loaded, |
1780 | since this invalidates the types stored in many expressions. */ | |
c906108c SS |
1781 | |
1782 | void | |
fba45db2 | 1783 | clear_displays (void) |
c906108c | 1784 | { |
52f0bd74 | 1785 | struct display *d; |
c906108c SS |
1786 | |
1787 | while ((d = display_chain) != NULL) | |
1788 | { | |
c906108c | 1789 | display_chain = d->next; |
fa8a61dc | 1790 | free_display (d); |
c906108c SS |
1791 | } |
1792 | } | |
1793 | ||
3c3fe74c | 1794 | /* Delete the auto-display DISPLAY. */ |
c906108c SS |
1795 | |
1796 | static void | |
3c3fe74c | 1797 | delete_display (struct display *display) |
c906108c | 1798 | { |
3c3fe74c | 1799 | struct display *d; |
c906108c | 1800 | |
3c3fe74c | 1801 | gdb_assert (display != NULL); |
c906108c | 1802 | |
3c3fe74c PA |
1803 | if (display_chain == display) |
1804 | display_chain = display->next; | |
1805 | ||
1806 | ALL_DISPLAYS (d) | |
1807 | if (d->next == display) | |
c906108c | 1808 | { |
3c3fe74c PA |
1809 | d->next = display->next; |
1810 | break; | |
c906108c | 1811 | } |
3c3fe74c PA |
1812 | |
1813 | free_display (display); | |
c906108c SS |
1814 | } |
1815 | ||
c9174737 PA |
1816 | /* Call FUNCTION on each of the displays whose numbers are given in |
1817 | ARGS. DATA is passed unmodified to FUNCTION. */ | |
c906108c SS |
1818 | |
1819 | static void | |
77763700 | 1820 | map_display_numbers (const char *args, |
c9174737 PA |
1821 | void (*function) (struct display *, |
1822 | void *), | |
1823 | void *data) | |
c906108c | 1824 | { |
c9174737 | 1825 | int num; |
c906108c | 1826 | |
c9174737 PA |
1827 | if (args == NULL) |
1828 | error_no_arg (_("one or more display numbers")); | |
c906108c | 1829 | |
bfd28288 | 1830 | number_or_range_parser parser (args); |
c9174737 | 1831 | |
bfd28288 | 1832 | while (!parser.finished ()) |
c906108c | 1833 | { |
bfd28288 | 1834 | const char *p = parser.cur_tok (); |
c906108c | 1835 | |
bfd28288 | 1836 | num = parser.get_number (); |
3c3fe74c PA |
1837 | if (num == 0) |
1838 | warning (_("bad display number at or near '%s'"), p); | |
1839 | else | |
1840 | { | |
c9174737 | 1841 | struct display *d, *tmp; |
c906108c | 1842 | |
c9174737 | 1843 | ALL_DISPLAYS_SAFE (d, tmp) |
3c3fe74c PA |
1844 | if (d->number == num) |
1845 | break; | |
1846 | if (d == NULL) | |
1847 | printf_unfiltered (_("No display number %d.\n"), num); | |
1848 | else | |
c9174737 | 1849 | function (d, data); |
3c3fe74c | 1850 | } |
c906108c | 1851 | } |
c9174737 PA |
1852 | } |
1853 | ||
1854 | /* Callback for map_display_numbers, that deletes a display. */ | |
1855 | ||
1856 | static void | |
1857 | do_delete_display (struct display *d, void *data) | |
1858 | { | |
1859 | delete_display (d); | |
1860 | } | |
1861 | ||
1862 | /* "undisplay" command. */ | |
1863 | ||
1864 | static void | |
77763700 | 1865 | undisplay_command (const char *args, int from_tty) |
c9174737 | 1866 | { |
c9174737 PA |
1867 | if (args == NULL) |
1868 | { | |
1869 | if (query (_("Delete all auto-display expressions? "))) | |
1870 | clear_displays (); | |
1871 | dont_repeat (); | |
1872 | return; | |
1873 | } | |
1874 | ||
1875 | map_display_numbers (args, do_delete_display, NULL); | |
c906108c SS |
1876 | dont_repeat (); |
1877 | } | |
1878 | ||
1879 | /* Display a single auto-display. | |
1880 | Do nothing if the display cannot be printed in the current context, | |
0df8b418 | 1881 | or if the display is disabled. */ |
c906108c SS |
1882 | |
1883 | static void | |
fba45db2 | 1884 | do_one_display (struct display *d) |
c906108c SS |
1885 | { |
1886 | int within_current_scope; | |
1887 | ||
b5de0fa7 | 1888 | if (d->enabled_p == 0) |
c906108c SS |
1889 | return; |
1890 | ||
704e9165 UW |
1891 | /* The expression carries the architecture that was used at parse time. |
1892 | This is a problem if the expression depends on architecture features | |
1893 | (e.g. register numbers), and the current architecture is now different. | |
1894 | For example, a display statement like "display/i $pc" is expected to | |
1895 | display the PC register of the current architecture, not the arch at | |
1896 | the time the display command was given. Therefore, we re-parse the | |
1897 | expression if the current architecture has changed. */ | |
1898 | if (d->exp != NULL && d->exp->gdbarch != get_current_arch ()) | |
1899 | { | |
4d01a485 | 1900 | d->exp.reset (); |
704e9165 UW |
1901 | d->block = NULL; |
1902 | } | |
1903 | ||
a3247a22 PP |
1904 | if (d->exp == NULL) |
1905 | { | |
ad3bbd48 | 1906 | |
a70b8144 | 1907 | try |
a3247a22 | 1908 | { |
699bd4cf TT |
1909 | innermost_block_tracker tracker; |
1910 | d->exp = parse_expression (d->exp_string, &tracker); | |
1911 | d->block = tracker.block (); | |
a3247a22 | 1912 | } |
230d2906 | 1913 | catch (const gdb_exception &ex) |
a3247a22 PP |
1914 | { |
1915 | /* Can't re-parse the expression. Disable this display item. */ | |
1916 | d->enabled_p = 0; | |
1917 | warning (_("Unable to display \"%s\": %s"), | |
3d6e9d23 | 1918 | d->exp_string, ex.what ()); |
a3247a22 PP |
1919 | return; |
1920 | } | |
1921 | } | |
1922 | ||
c906108c | 1923 | if (d->block) |
6c95b8df PA |
1924 | { |
1925 | if (d->pspace == current_program_space) | |
1926 | within_current_scope = contained_in (get_selected_block (0), d->block); | |
1927 | else | |
1928 | within_current_scope = 0; | |
1929 | } | |
c906108c SS |
1930 | else |
1931 | within_current_scope = 1; | |
1932 | if (!within_current_scope) | |
1933 | return; | |
1934 | ||
b7b633e9 TT |
1935 | scoped_restore save_display_number |
1936 | = make_scoped_restore (¤t_display_number, d->number); | |
c906108c SS |
1937 | |
1938 | annotate_display_begin (); | |
1939 | printf_filtered ("%d", d->number); | |
1940 | annotate_display_number_end (); | |
1941 | printf_filtered (": "); | |
1942 | if (d->format.size) | |
1943 | { | |
c906108c SS |
1944 | |
1945 | annotate_display_format (); | |
1946 | ||
1947 | printf_filtered ("x/"); | |
1948 | if (d->format.count != 1) | |
1949 | printf_filtered ("%d", d->format.count); | |
1950 | printf_filtered ("%c", d->format.format); | |
1951 | if (d->format.format != 'i' && d->format.format != 's') | |
1952 | printf_filtered ("%c", d->format.size); | |
1953 | printf_filtered (" "); | |
1954 | ||
1955 | annotate_display_expression (); | |
1956 | ||
fa8a61dc | 1957 | puts_filtered (d->exp_string); |
c906108c SS |
1958 | annotate_display_expression_end (); |
1959 | ||
6a2eb474 | 1960 | if (d->format.count != 1 || d->format.format == 'i') |
c906108c SS |
1961 | printf_filtered ("\n"); |
1962 | else | |
1963 | printf_filtered (" "); | |
c5aa993b | 1964 | |
c906108c SS |
1965 | annotate_display_value (); |
1966 | ||
a70b8144 | 1967 | try |
9d8fa392 PA |
1968 | { |
1969 | struct value *val; | |
1970 | CORE_ADDR addr; | |
1971 | ||
4d01a485 | 1972 | val = evaluate_expression (d->exp.get ()); |
9d8fa392 PA |
1973 | addr = value_as_address (val); |
1974 | if (d->format.format == 'i') | |
1975 | addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr); | |
1976 | do_examine (d->format, d->exp->gdbarch, addr); | |
1977 | } | |
230d2906 | 1978 | catch (const gdb_exception_error &ex) |
492d29ea | 1979 | { |
3d6e9d23 TT |
1980 | fprintf_filtered (gdb_stdout, _("<error: %s>\n"), |
1981 | ex.what ()); | |
492d29ea | 1982 | } |
c906108c SS |
1983 | } |
1984 | else | |
1985 | { | |
79a45b7d TT |
1986 | struct value_print_options opts; |
1987 | ||
c906108c SS |
1988 | annotate_display_format (); |
1989 | ||
1990 | if (d->format.format) | |
1991 | printf_filtered ("/%c ", d->format.format); | |
1992 | ||
1993 | annotate_display_expression (); | |
1994 | ||
fa8a61dc | 1995 | puts_filtered (d->exp_string); |
c906108c SS |
1996 | annotate_display_expression_end (); |
1997 | ||
1998 | printf_filtered (" = "); | |
1999 | ||
2000 | annotate_display_expression (); | |
2001 | ||
79a45b7d | 2002 | get_formatted_print_options (&opts, d->format.format); |
a6bac58e | 2003 | opts.raw = d->format.raw; |
9d8fa392 | 2004 | |
a70b8144 | 2005 | try |
9d8fa392 PA |
2006 | { |
2007 | struct value *val; | |
2008 | ||
4d01a485 | 2009 | val = evaluate_expression (d->exp.get ()); |
9d8fa392 PA |
2010 | print_formatted (val, d->format.size, &opts, gdb_stdout); |
2011 | } | |
230d2906 | 2012 | catch (const gdb_exception_error &ex) |
492d29ea | 2013 | { |
3d6e9d23 | 2014 | fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.what ()); |
492d29ea | 2015 | } |
492d29ea | 2016 | |
c906108c SS |
2017 | printf_filtered ("\n"); |
2018 | } | |
2019 | ||
2020 | annotate_display_end (); | |
2021 | ||
2022 | gdb_flush (gdb_stdout); | |
c906108c SS |
2023 | } |
2024 | ||
2025 | /* Display all of the values on the auto-display chain which can be | |
2026 | evaluated in the current scope. */ | |
2027 | ||
2028 | void | |
fba45db2 | 2029 | do_displays (void) |
c906108c | 2030 | { |
52f0bd74 | 2031 | struct display *d; |
c906108c SS |
2032 | |
2033 | for (d = display_chain; d; d = d->next) | |
2034 | do_one_display (d); | |
2035 | } | |
2036 | ||
2037 | /* Delete the auto-display which we were in the process of displaying. | |
2038 | This is done when there is an error or a signal. */ | |
2039 | ||
2040 | void | |
fba45db2 | 2041 | disable_display (int num) |
c906108c | 2042 | { |
52f0bd74 | 2043 | struct display *d; |
c906108c SS |
2044 | |
2045 | for (d = display_chain; d; d = d->next) | |
2046 | if (d->number == num) | |
2047 | { | |
b5de0fa7 | 2048 | d->enabled_p = 0; |
c906108c SS |
2049 | return; |
2050 | } | |
a3f17187 | 2051 | printf_unfiltered (_("No display number %d.\n"), num); |
c906108c | 2052 | } |
c5aa993b | 2053 | |
c906108c | 2054 | void |
fba45db2 | 2055 | disable_current_display (void) |
c906108c SS |
2056 | { |
2057 | if (current_display_number >= 0) | |
2058 | { | |
2059 | disable_display (current_display_number); | |
3e43a32a MS |
2060 | fprintf_unfiltered (gdb_stderr, |
2061 | _("Disabling display %d to " | |
2062 | "avoid infinite recursion.\n"), | |
c5aa993b | 2063 | current_display_number); |
c906108c SS |
2064 | } |
2065 | current_display_number = -1; | |
2066 | } | |
2067 | ||
2068 | static void | |
1d12d88f | 2069 | info_display_command (const char *ignore, int from_tty) |
c906108c | 2070 | { |
52f0bd74 | 2071 | struct display *d; |
c906108c SS |
2072 | |
2073 | if (!display_chain) | |
a3f17187 | 2074 | printf_unfiltered (_("There are no auto-display expressions now.\n")); |
c906108c | 2075 | else |
a3f17187 AC |
2076 | printf_filtered (_("Auto-display expressions now in effect:\n\ |
2077 | Num Enb Expression\n")); | |
c906108c SS |
2078 | |
2079 | for (d = display_chain; d; d = d->next) | |
2080 | { | |
b5de0fa7 | 2081 | printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]); |
c906108c SS |
2082 | if (d->format.size) |
2083 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
c5aa993b | 2084 | d->format.format); |
c906108c SS |
2085 | else if (d->format.format) |
2086 | printf_filtered ("/%c ", d->format.format); | |
fa8a61dc | 2087 | puts_filtered (d->exp_string); |
ae767bfb | 2088 | if (d->block && !contained_in (get_selected_block (0), d->block)) |
a3f17187 | 2089 | printf_filtered (_(" (cannot be evaluated in the current context)")); |
c906108c | 2090 | printf_filtered ("\n"); |
c906108c SS |
2091 | } |
2092 | } | |
2093 | ||
c9174737 PA |
2094 | /* Callback fo map_display_numbers, that enables or disables the |
2095 | passed in display D. */ | |
2096 | ||
c906108c | 2097 | static void |
c9174737 | 2098 | do_enable_disable_display (struct display *d, void *data) |
c906108c | 2099 | { |
c9174737 PA |
2100 | d->enabled_p = *(int *) data; |
2101 | } | |
c906108c | 2102 | |
c9174737 PA |
2103 | /* Implamentation of both the "disable display" and "enable display" |
2104 | commands. ENABLE decides what to do. */ | |
2105 | ||
2106 | static void | |
77763700 | 2107 | enable_disable_display_command (const char *args, int from_tty, int enable) |
c9174737 PA |
2108 | { |
2109 | if (args == NULL) | |
c906108c | 2110 | { |
c9174737 | 2111 | struct display *d; |
c5aa993b | 2112 | |
c9174737 PA |
2113 | ALL_DISPLAYS (d) |
2114 | d->enabled_p = enable; | |
2115 | return; | |
2116 | } | |
c5aa993b | 2117 | |
c9174737 | 2118 | map_display_numbers (args, do_enable_disable_display, &enable); |
c906108c SS |
2119 | } |
2120 | ||
c9174737 PA |
2121 | /* The "enable display" command. */ |
2122 | ||
c906108c | 2123 | static void |
77763700 | 2124 | enable_display_command (const char *args, int from_tty) |
c906108c | 2125 | { |
c9174737 PA |
2126 | enable_disable_display_command (args, from_tty, 1); |
2127 | } | |
c5aa993b | 2128 | |
c9174737 | 2129 | /* The "disable display" command. */ |
c906108c | 2130 | |
c9174737 | 2131 | static void |
77763700 | 2132 | disable_display_command (const char *args, int from_tty) |
c9174737 PA |
2133 | { |
2134 | enable_disable_display_command (args, from_tty, 0); | |
c906108c | 2135 | } |
a3247a22 | 2136 | |
a3247a22 PP |
2137 | /* display_chain items point to blocks and expressions. Some expressions in |
2138 | turn may point to symbols. | |
2139 | Both symbols and blocks are obstack_alloc'd on objfile_stack, and are | |
2140 | obstack_free'd when a shared library is unloaded. | |
2141 | Clear pointers that are about to become dangling. | |
2142 | Both .exp and .block fields will be restored next time we need to display | |
2143 | an item by re-parsing .exp_string field in the new execution context. */ | |
2144 | ||
2145 | static void | |
63644780 | 2146 | clear_dangling_display_expressions (struct objfile *objfile) |
a3247a22 PP |
2147 | { |
2148 | struct display *d; | |
63644780 | 2149 | struct program_space *pspace; |
a3247a22 | 2150 | |
c0201579 JK |
2151 | /* With no symbol file we cannot have a block or expression from it. */ |
2152 | if (objfile == NULL) | |
2153 | return; | |
63644780 | 2154 | pspace = objfile->pspace; |
c0201579 | 2155 | if (objfile->separate_debug_objfile_backlink) |
63644780 NB |
2156 | { |
2157 | objfile = objfile->separate_debug_objfile_backlink; | |
2158 | gdb_assert (objfile->pspace == pspace); | |
2159 | } | |
c0201579 JK |
2160 | |
2161 | for (d = display_chain; d != NULL; d = d->next) | |
a3247a22 | 2162 | { |
63644780 | 2163 | if (d->pspace != pspace) |
c0201579 JK |
2164 | continue; |
2165 | ||
2166 | if (lookup_objfile_from_block (d->block) == objfile | |
4d01a485 | 2167 | || (d->exp != NULL && exp_uses_objfile (d->exp.get (), objfile))) |
c0201579 | 2168 | { |
4d01a485 | 2169 | d->exp.reset (); |
c0201579 JK |
2170 | d->block = NULL; |
2171 | } | |
a3247a22 PP |
2172 | } |
2173 | } | |
c906108c | 2174 | \f |
c5aa993b | 2175 | |
675dcf4f | 2176 | /* Print the value in stack frame FRAME of a variable specified by a |
aad95b57 TT |
2177 | struct symbol. NAME is the name to print; if NULL then VAR's print |
2178 | name will be used. STREAM is the ui_file on which to print the | |
2179 | value. INDENT specifies the number of indent levels to print | |
8f043999 JK |
2180 | before printing the variable name. |
2181 | ||
2182 | This function invalidates FRAME. */ | |
c906108c SS |
2183 | |
2184 | void | |
aad95b57 TT |
2185 | print_variable_and_value (const char *name, struct symbol *var, |
2186 | struct frame_info *frame, | |
2187 | struct ui_file *stream, int indent) | |
c906108c | 2188 | { |
c906108c | 2189 | |
aad95b57 TT |
2190 | if (!name) |
2191 | name = SYMBOL_PRINT_NAME (var); | |
2192 | ||
80ae2043 TT |
2193 | fputs_filtered (n_spaces (2 * indent), stream); |
2194 | fputs_styled (name, variable_name_style.style (), stream); | |
2195 | fputs_filtered (" = ", stream); | |
2196 | ||
a70b8144 | 2197 | try |
0f6a939d PM |
2198 | { |
2199 | struct value *val; | |
2200 | struct value_print_options opts; | |
aad95b57 | 2201 | |
63e43d3a PMR |
2202 | /* READ_VAR_VALUE needs a block in order to deal with non-local |
2203 | references (i.e. to handle nested functions). In this context, we | |
2204 | print variables that are local to this frame, so we can avoid passing | |
2205 | a block to it. */ | |
2206 | val = read_var_value (var, NULL, frame); | |
0f6a939d | 2207 | get_user_print_options (&opts); |
3343315b | 2208 | opts.deref_ref = 1; |
0f6a939d | 2209 | common_val_print (val, stream, indent, &opts, current_language); |
8f043999 JK |
2210 | |
2211 | /* common_val_print invalidates FRAME when a pretty printer calls inferior | |
2212 | function. */ | |
2213 | frame = NULL; | |
0f6a939d | 2214 | } |
230d2906 | 2215 | catch (const gdb_exception_error &except) |
492d29ea | 2216 | { |
3d6e9d23 TT |
2217 | fprintf_filtered (stream, "<error reading variable %s (%s)>", name, |
2218 | except.what ()); | |
492d29ea | 2219 | } |
492d29ea | 2220 | |
aad95b57 | 2221 | fprintf_filtered (stream, "\n"); |
c906108c SS |
2222 | } |
2223 | ||
c2792f5a DE |
2224 | /* Subroutine of ui_printf to simplify it. |
2225 | Print VALUE to STREAM using FORMAT. | |
1f6f6e21 PW |
2226 | VALUE is a C-style string either on the target or |
2227 | in a GDB internal variable. */ | |
c2792f5a DE |
2228 | |
2229 | static void | |
2230 | printf_c_string (struct ui_file *stream, const char *format, | |
2231 | struct value *value) | |
2232 | { | |
1f6f6e21 | 2233 | const gdb_byte *str; |
c2792f5a | 2234 | |
1f6f6e21 PW |
2235 | if (VALUE_LVAL (value) == lval_internalvar |
2236 | && c_is_string_type_p (value_type (value))) | |
3ae9ce5d | 2237 | { |
1f6f6e21 | 2238 | size_t len = TYPE_LENGTH (value_type (value)); |
c2792f5a | 2239 | |
1f6f6e21 PW |
2240 | /* Copy the internal var value to TEM_STR and append a terminating null |
2241 | character. This protects against corrupted C-style strings that lack | |
2242 | the terminating null char. It also allows Ada-style strings (not | |
2243 | null terminated) to be printed without problems. */ | |
2244 | gdb_byte *tem_str = (gdb_byte *) alloca (len + 1); | |
c2792f5a | 2245 | |
1f6f6e21 PW |
2246 | memcpy (tem_str, value_contents (value), len); |
2247 | tem_str [len] = 0; | |
2248 | str = tem_str; | |
c2792f5a | 2249 | } |
1f6f6e21 PW |
2250 | else |
2251 | { | |
2252 | CORE_ADDR tem = value_as_address (value);; | |
2253 | ||
2254 | if (tem == 0) | |
2255 | { | |
2256 | DIAGNOSTIC_PUSH | |
2257 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
2258 | fprintf_filtered (stream, format, "(null)"); | |
2259 | DIAGNOSTIC_POP | |
2260 | return; | |
2261 | } | |
2262 | ||
2263 | /* This is a %s argument. Find the length of the string. */ | |
2264 | size_t len; | |
2265 | ||
2266 | for (len = 0;; len++) | |
2267 | { | |
2268 | gdb_byte c; | |
c2792f5a | 2269 | |
1f6f6e21 PW |
2270 | QUIT; |
2271 | read_memory (tem + len, &c, 1); | |
2272 | if (c == 0) | |
2273 | break; | |
2274 | } | |
2275 | ||
2276 | /* Copy the string contents into a string inside GDB. */ | |
2277 | gdb_byte *tem_str = (gdb_byte *) alloca (len + 1); | |
2278 | ||
2279 | if (len != 0) | |
2280 | read_memory (tem, tem_str, len); | |
2281 | tem_str[len] = 0; | |
2282 | str = tem_str; | |
2283 | } | |
c2792f5a | 2284 | |
af39b1c2 SM |
2285 | DIAGNOSTIC_PUSH |
2286 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2287 | fprintf_filtered (stream, format, (char *) str); |
af39b1c2 | 2288 | DIAGNOSTIC_POP |
c2792f5a DE |
2289 | } |
2290 | ||
2291 | /* Subroutine of ui_printf to simplify it. | |
2292 | Print VALUE to STREAM using FORMAT. | |
1f6f6e21 PW |
2293 | VALUE is a wide C-style string on the target or |
2294 | in a GDB internal variable. */ | |
c2792f5a DE |
2295 | |
2296 | static void | |
2297 | printf_wide_c_string (struct ui_file *stream, const char *format, | |
2298 | struct value *value) | |
2299 | { | |
1f6f6e21 PW |
2300 | const gdb_byte *str; |
2301 | size_t len; | |
c2792f5a | 2302 | struct gdbarch *gdbarch = get_type_arch (value_type (value)); |
c2792f5a DE |
2303 | struct type *wctype = lookup_typename (current_language, gdbarch, |
2304 | "wchar_t", NULL, 0); | |
2305 | int wcwidth = TYPE_LENGTH (wctype); | |
c2792f5a | 2306 | |
1f6f6e21 PW |
2307 | if (VALUE_LVAL (value) == lval_internalvar |
2308 | && c_is_string_type_p (value_type (value))) | |
3ae9ce5d | 2309 | { |
1f6f6e21 PW |
2310 | str = value_contents (value); |
2311 | len = TYPE_LENGTH (value_type (value)); | |
3ae9ce5d | 2312 | } |
1f6f6e21 | 2313 | else |
c2792f5a | 2314 | { |
1f6f6e21 | 2315 | CORE_ADDR tem = value_as_address (value); |
c2792f5a | 2316 | |
1f6f6e21 PW |
2317 | if (tem == 0) |
2318 | { | |
2319 | DIAGNOSTIC_PUSH | |
2320 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
2321 | fprintf_filtered (stream, format, "(null)"); | |
2322 | DIAGNOSTIC_POP | |
2323 | return; | |
2324 | } | |
2325 | ||
2326 | /* This is a %s argument. Find the length of the string. */ | |
2327 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
2328 | gdb_byte *buf = (gdb_byte *) alloca (wcwidth); | |
2329 | ||
2330 | for (len = 0;; len += wcwidth) | |
2331 | { | |
2332 | QUIT; | |
2333 | read_memory (tem + len, buf, wcwidth); | |
2334 | if (extract_unsigned_integer (buf, wcwidth, byte_order) == 0) | |
2335 | break; | |
2336 | } | |
2337 | ||
2338 | /* Copy the string contents into a string inside GDB. */ | |
2339 | gdb_byte *tem_str = (gdb_byte *) alloca (len + wcwidth); | |
2340 | ||
2341 | if (len != 0) | |
2342 | read_memory (tem, tem_str, len); | |
2343 | memset (&tem_str[len], 0, wcwidth); | |
2344 | str = tem_str; | |
2345 | } | |
c2792f5a | 2346 | |
8268c778 | 2347 | auto_obstack output; |
c2792f5a DE |
2348 | |
2349 | convert_between_encodings (target_wide_charset (gdbarch), | |
2350 | host_charset (), | |
1f6f6e21 | 2351 | str, len, wcwidth, |
c2792f5a DE |
2352 | &output, translit_char); |
2353 | obstack_grow_str0 (&output, ""); | |
2354 | ||
af39b1c2 SM |
2355 | DIAGNOSTIC_PUSH |
2356 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2357 | fprintf_filtered (stream, format, obstack_base (&output)); |
af39b1c2 | 2358 | DIAGNOSTIC_POP |
c2792f5a DE |
2359 | } |
2360 | ||
2361 | /* Subroutine of ui_printf to simplify it. | |
16e812b2 | 2362 | Print VALUE, a floating point value, to STREAM using FORMAT. */ |
c2792f5a DE |
2363 | |
2364 | static void | |
16e812b2 UW |
2365 | printf_floating (struct ui_file *stream, const char *format, |
2366 | struct value *value, enum argclass argclass) | |
c2792f5a | 2367 | { |
c2792f5a DE |
2368 | /* Parameter data. */ |
2369 | struct type *param_type = value_type (value); | |
2370 | struct gdbarch *gdbarch = get_type_arch (param_type); | |
c2792f5a | 2371 | |
16e812b2 UW |
2372 | /* Determine target type corresponding to the format string. */ |
2373 | struct type *fmt_type; | |
2374 | switch (argclass) | |
c2792f5a | 2375 | { |
16e812b2 UW |
2376 | case double_arg: |
2377 | fmt_type = builtin_type (gdbarch)->builtin_double; | |
2378 | break; | |
2379 | case long_double_arg: | |
2380 | fmt_type = builtin_type (gdbarch)->builtin_long_double; | |
2381 | break; | |
2382 | case dec32float_arg: | |
2383 | fmt_type = builtin_type (gdbarch)->builtin_decfloat; | |
2384 | break; | |
2385 | case dec64float_arg: | |
2386 | fmt_type = builtin_type (gdbarch)->builtin_decdouble; | |
2387 | break; | |
2388 | case dec128float_arg: | |
2389 | fmt_type = builtin_type (gdbarch)->builtin_declong; | |
2390 | break; | |
2391 | default: | |
2392 | gdb_assert_not_reached ("unexpected argument class"); | |
c2792f5a DE |
2393 | } |
2394 | ||
16e812b2 UW |
2395 | /* To match the traditional GDB behavior, the conversion is |
2396 | done differently depending on the type of the parameter: | |
2397 | ||
2398 | - if the parameter has floating-point type, it's value | |
2399 | is converted to the target type; | |
2400 | ||
2401 | - otherwise, if the parameter has a type that is of the | |
2402 | same size as a built-in floating-point type, the value | |
2403 | bytes are interpreted as if they were of that type, and | |
2404 | then converted to the target type (this is not done for | |
2405 | decimal floating-point argument classes); | |
2406 | ||
2407 | - otherwise, if the source value has an integer value, | |
2408 | it's value is converted to the target type; | |
c2792f5a | 2409 | |
16e812b2 | 2410 | - otherwise, an error is raised. |
c2792f5a | 2411 | |
16e812b2 UW |
2412 | In either case, the result of the conversion is a byte buffer |
2413 | formatted in the target format for the target type. */ | |
2414 | ||
2415 | if (TYPE_CODE (fmt_type) == TYPE_CODE_FLT) | |
2416 | { | |
2417 | param_type = float_type_from_length (param_type); | |
2418 | if (param_type != value_type (value)) | |
2419 | value = value_from_contents (param_type, value_contents (value)); | |
2420 | } | |
2421 | ||
2422 | value = value_cast (fmt_type, value); | |
c2792f5a | 2423 | |
3b4b2f16 | 2424 | /* Convert the value to a string and print it. */ |
f69fdf9b UW |
2425 | std::string str |
2426 | = target_float_to_string (value_contents (value), fmt_type, format); | |
3b4b2f16 | 2427 | fputs_filtered (str.c_str (), stream); |
c2792f5a DE |
2428 | } |
2429 | ||
2430 | /* Subroutine of ui_printf to simplify it. | |
2431 | Print VALUE, a target pointer, to STREAM using FORMAT. */ | |
2432 | ||
2433 | static void | |
2434 | printf_pointer (struct ui_file *stream, const char *format, | |
2435 | struct value *value) | |
2436 | { | |
2437 | /* We avoid the host's %p because pointers are too | |
2438 | likely to be the wrong size. The only interesting | |
2439 | modifier for %p is a width; extract that, and then | |
2440 | handle %p as glibc would: %#x or a literal "(nil)". */ | |
2441 | ||
2442 | const char *p; | |
2443 | char *fmt, *fmt_p; | |
2444 | #ifdef PRINTF_HAS_LONG_LONG | |
2445 | long long val = value_as_long (value); | |
2446 | #else | |
2447 | long val = value_as_long (value); | |
2448 | #endif | |
2449 | ||
224c3ddb | 2450 | fmt = (char *) alloca (strlen (format) + 5); |
c2792f5a DE |
2451 | |
2452 | /* Copy up to the leading %. */ | |
2453 | p = format; | |
2454 | fmt_p = fmt; | |
2455 | while (*p) | |
2456 | { | |
2457 | int is_percent = (*p == '%'); | |
2458 | ||
2459 | *fmt_p++ = *p++; | |
2460 | if (is_percent) | |
2461 | { | |
2462 | if (*p == '%') | |
2463 | *fmt_p++ = *p++; | |
2464 | else | |
2465 | break; | |
2466 | } | |
2467 | } | |
2468 | ||
2469 | if (val != 0) | |
2470 | *fmt_p++ = '#'; | |
2471 | ||
b8c2339b TT |
2472 | /* Copy any width or flags. Only the "-" flag is valid for pointers |
2473 | -- see the format_pieces constructor. */ | |
2474 | while (*p == '-' || (*p >= '0' && *p < '9')) | |
c2792f5a DE |
2475 | *fmt_p++ = *p++; |
2476 | ||
2477 | gdb_assert (*p == 'p' && *(p + 1) == '\0'); | |
2478 | if (val != 0) | |
2479 | { | |
2480 | #ifdef PRINTF_HAS_LONG_LONG | |
2481 | *fmt_p++ = 'l'; | |
2482 | #endif | |
2483 | *fmt_p++ = 'l'; | |
2484 | *fmt_p++ = 'x'; | |
2485 | *fmt_p++ = '\0'; | |
af39b1c2 SM |
2486 | DIAGNOSTIC_PUSH |
2487 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2488 | fprintf_filtered (stream, fmt, val); |
af39b1c2 | 2489 | DIAGNOSTIC_POP |
c2792f5a DE |
2490 | } |
2491 | else | |
2492 | { | |
2493 | *fmt_p++ = 's'; | |
2494 | *fmt_p++ = '\0'; | |
af39b1c2 SM |
2495 | DIAGNOSTIC_PUSH |
2496 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2497 | fprintf_filtered (stream, fmt, "(nil)"); |
af39b1c2 | 2498 | DIAGNOSTIC_POP |
c2792f5a DE |
2499 | } |
2500 | } | |
2501 | ||
a04b0428 JB |
2502 | /* printf "printf format string" ARG to STREAM. */ |
2503 | ||
2504 | static void | |
bbc13ae3 | 2505 | ui_printf (const char *arg, struct ui_file *stream) |
c906108c | 2506 | { |
bbc13ae3 | 2507 | const char *s = arg; |
8e481c3b | 2508 | std::vector<struct value *> val_args; |
c906108c SS |
2509 | |
2510 | if (s == 0) | |
e2e0b3e5 | 2511 | error_no_arg (_("format-control string and values to print")); |
c906108c | 2512 | |
f1735a53 | 2513 | s = skip_spaces (s); |
c906108c | 2514 | |
675dcf4f | 2515 | /* A format string should follow, enveloped in double quotes. */ |
c906108c | 2516 | if (*s++ != '"') |
8a3fe4f8 | 2517 | error (_("Bad format string, missing '\"'.")); |
c906108c | 2518 | |
8e481c3b | 2519 | format_pieces fpieces (&s); |
c906108c | 2520 | |
d3ce09f5 SS |
2521 | if (*s++ != '"') |
2522 | error (_("Bad format string, non-terminated '\"'.")); | |
2523 | ||
f1735a53 | 2524 | s = skip_spaces (s); |
c906108c SS |
2525 | |
2526 | if (*s != ',' && *s != 0) | |
8a3fe4f8 | 2527 | error (_("Invalid argument syntax")); |
c906108c | 2528 | |
c5aa993b JM |
2529 | if (*s == ',') |
2530 | s++; | |
f1735a53 | 2531 | s = skip_spaces (s); |
c906108c | 2532 | |
c906108c | 2533 | { |
c906108c | 2534 | int nargs_wanted; |
8e481c3b TT |
2535 | int i; |
2536 | const char *current_substring; | |
c906108c | 2537 | |
c906108c | 2538 | nargs_wanted = 0; |
8e481c3b TT |
2539 | for (auto &&piece : fpieces) |
2540 | if (piece.argclass != literal_piece) | |
d3ce09f5 | 2541 | ++nargs_wanted; |
c906108c SS |
2542 | |
2543 | /* Now, parse all arguments and evaluate them. | |
2544 | Store the VALUEs in VAL_ARGS. */ | |
2545 | ||
2546 | while (*s != '\0') | |
2547 | { | |
bbc13ae3 | 2548 | const char *s1; |
ad3bbd48 | 2549 | |
a04b0428 | 2550 | s1 = s; |
8e481c3b | 2551 | val_args.push_back (parse_to_comma_and_eval (&s1)); |
c5aa993b | 2552 | |
c906108c SS |
2553 | s = s1; |
2554 | if (*s == ',') | |
2555 | s++; | |
2556 | } | |
c5aa993b | 2557 | |
8e481c3b | 2558 | if (val_args.size () != nargs_wanted) |
8a3fe4f8 | 2559 | error (_("Wrong number of arguments for specified format-string")); |
c906108c SS |
2560 | |
2561 | /* Now actually print them. */ | |
d3ce09f5 | 2562 | i = 0; |
8e481c3b | 2563 | for (auto &&piece : fpieces) |
c906108c | 2564 | { |
8e481c3b TT |
2565 | current_substring = piece.string; |
2566 | switch (piece.argclass) | |
c906108c SS |
2567 | { |
2568 | case string_arg: | |
c2792f5a | 2569 | printf_c_string (stream, current_substring, val_args[i]); |
c906108c | 2570 | break; |
6c7a06a3 | 2571 | case wide_string_arg: |
c2792f5a | 2572 | printf_wide_c_string (stream, current_substring, val_args[i]); |
6c7a06a3 TT |
2573 | break; |
2574 | case wide_char_arg: | |
2575 | { | |
50810684 UW |
2576 | struct gdbarch *gdbarch |
2577 | = get_type_arch (value_type (val_args[i])); | |
2578 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
e6c014f2 | 2579 | "wchar_t", NULL, 0); |
6c7a06a3 | 2580 | struct type *valtype; |
6c7a06a3 TT |
2581 | const gdb_byte *bytes; |
2582 | ||
2583 | valtype = value_type (val_args[i]); | |
2584 | if (TYPE_LENGTH (valtype) != TYPE_LENGTH (wctype) | |
2585 | || TYPE_CODE (valtype) != TYPE_CODE_INT) | |
2586 | error (_("expected wchar_t argument for %%lc")); | |
2587 | ||
2588 | bytes = value_contents (val_args[i]); | |
2589 | ||
8268c778 | 2590 | auto_obstack output; |
6c7a06a3 | 2591 | |
f870a310 | 2592 | convert_between_encodings (target_wide_charset (gdbarch), |
6c7a06a3 TT |
2593 | host_charset (), |
2594 | bytes, TYPE_LENGTH (valtype), | |
2595 | TYPE_LENGTH (valtype), | |
2596 | &output, translit_char); | |
2597 | obstack_grow_str0 (&output, ""); | |
2598 | ||
af39b1c2 SM |
2599 | DIAGNOSTIC_PUSH |
2600 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 HZ |
2601 | fprintf_filtered (stream, current_substring, |
2602 | obstack_base (&output)); | |
af39b1c2 | 2603 | DIAGNOSTIC_POP |
6c7a06a3 TT |
2604 | } |
2605 | break; | |
c906108c | 2606 | case long_long_arg: |
74a0d9f6 | 2607 | #ifdef PRINTF_HAS_LONG_LONG |
c906108c SS |
2608 | { |
2609 | long long val = value_as_long (val_args[i]); | |
ad3bbd48 | 2610 | |
af39b1c2 SM |
2611 | DIAGNOSTIC_PUSH |
2612 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2613 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2614 | DIAGNOSTIC_POP |
c906108c SS |
2615 | break; |
2616 | } | |
2617 | #else | |
8a3fe4f8 | 2618 | error (_("long long not supported in printf")); |
c906108c SS |
2619 | #endif |
2620 | case int_arg: | |
2621 | { | |
46e9880c | 2622 | int val = value_as_long (val_args[i]); |
ad3bbd48 | 2623 | |
af39b1c2 SM |
2624 | DIAGNOSTIC_PUSH |
2625 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2626 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2627 | DIAGNOSTIC_POP |
46e9880c DJ |
2628 | break; |
2629 | } | |
2630 | case long_arg: | |
2631 | { | |
c906108c | 2632 | long val = value_as_long (val_args[i]); |
ad3bbd48 | 2633 | |
af39b1c2 SM |
2634 | DIAGNOSTIC_PUSH |
2635 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2636 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2637 | DIAGNOSTIC_POP |
c906108c SS |
2638 | break; |
2639 | } | |
16e812b2 UW |
2640 | /* Handles floating-point values. */ |
2641 | case double_arg: | |
2642 | case long_double_arg: | |
2643 | case dec32float_arg: | |
2644 | case dec64float_arg: | |
2645 | case dec128float_arg: | |
2646 | printf_floating (stream, current_substring, val_args[i], | |
8e481c3b | 2647 | piece.argclass); |
c2792f5a | 2648 | break; |
2025a643 | 2649 | case ptr_arg: |
c2792f5a DE |
2650 | printf_pointer (stream, current_substring, val_args[i]); |
2651 | break; | |
d3ce09f5 SS |
2652 | case literal_piece: |
2653 | /* Print a portion of the format string that has no | |
2654 | directives. Note that this will not include any | |
2655 | ordinary %-specs, but it might include "%%". That is | |
2656 | why we use printf_filtered and not puts_filtered here. | |
2657 | Also, we pass a dummy argument because some platforms | |
2658 | have modified GCC to include -Wformat-security by | |
2659 | default, which will warn here if there is no | |
2660 | argument. */ | |
af39b1c2 SM |
2661 | DIAGNOSTIC_PUSH |
2662 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
d3ce09f5 | 2663 | fprintf_filtered (stream, current_substring, 0); |
af39b1c2 | 2664 | DIAGNOSTIC_POP |
d3ce09f5 | 2665 | break; |
675dcf4f MK |
2666 | default: |
2667 | internal_error (__FILE__, __LINE__, | |
2025a643 | 2668 | _("failed internal consistency check")); |
c906108c | 2669 | } |
d3ce09f5 | 2670 | /* Maybe advance to the next argument. */ |
8e481c3b | 2671 | if (piece.argclass != literal_piece) |
d3ce09f5 | 2672 | ++i; |
c906108c | 2673 | } |
c906108c | 2674 | } |
c906108c | 2675 | } |
c906108c | 2676 | |
f1421989 HZ |
2677 | /* Implement the "printf" command. */ |
2678 | ||
a04b0428 | 2679 | static void |
0b39b52e | 2680 | printf_command (const char *arg, int from_tty) |
f1421989 | 2681 | { |
a04b0428 | 2682 | ui_printf (arg, gdb_stdout); |
ef1dfa36 TT |
2683 | reset_terminal_style (gdb_stdout); |
2684 | wrap_here (""); | |
50b34a18 | 2685 | gdb_flush (gdb_stdout); |
f1421989 HZ |
2686 | } |
2687 | ||
2688 | /* Implement the "eval" command. */ | |
2689 | ||
2690 | static void | |
0b39b52e | 2691 | eval_command (const char *arg, int from_tty) |
f1421989 | 2692 | { |
d7e74731 | 2693 | string_file stb; |
f1421989 | 2694 | |
d7e74731 | 2695 | ui_printf (arg, &stb); |
f1421989 | 2696 | |
d7e74731 | 2697 | std::string expanded = insert_user_defined_cmd_args (stb.c_str ()); |
01770bbd | 2698 | |
95a6b0a1 | 2699 | execute_command (expanded.c_str (), from_tty); |
f1421989 HZ |
2700 | } |
2701 | ||
c906108c | 2702 | void |
fba45db2 | 2703 | _initialize_printcmd (void) |
c906108c | 2704 | { |
c94fdfd0 EZ |
2705 | struct cmd_list_element *c; |
2706 | ||
c906108c SS |
2707 | current_display_number = -1; |
2708 | ||
76727919 | 2709 | gdb::observers::free_objfile.attach (clear_dangling_display_expressions); |
a3247a22 | 2710 | |
11db9430 | 2711 | add_info ("address", info_address_command, |
188e1fa9 TT |
2712 | _("Describe where symbol SYM is stored.\n\ |
2713 | Usage: info address SYM")); | |
c906108c | 2714 | |
11db9430 | 2715 | add_info ("symbol", info_symbol_command, _("\ |
1bedd215 | 2716 | Describe what symbol is at location ADDR.\n\ |
188e1fa9 | 2717 | Usage: info symbol ADDR\n\ |
1bedd215 | 2718 | Only for symbols with fixed locations (global or static scope).")); |
c906108c | 2719 | |
1bedd215 AC |
2720 | add_com ("x", class_vars, x_command, _("\ |
2721 | Examine memory: x/FMT ADDRESS.\n\ | |
c906108c SS |
2722 | ADDRESS is an expression for the memory address to examine.\n\ |
2723 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2724 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
6fbe845e AB |
2725 | t(binary), f(float), a(address), i(instruction), c(char), s(string)\n\ |
2726 | and z(hex, zero padded on the left).\n\ | |
1bedd215 | 2727 | Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ |
c906108c | 2728 | The specified number of objects of the specified size are printed\n\ |
bb556f1f TK |
2729 | according to the format. If a negative number is specified, memory is\n\ |
2730 | examined backward from the address.\n\n\ | |
c906108c SS |
2731 | Defaults for format and size letters are those previously used.\n\ |
2732 | Default count is 1. Default address is following last thing printed\n\ | |
1bedd215 | 2733 | with this command or \"print\".")); |
c906108c | 2734 | |
11db9430 | 2735 | add_info ("display", info_display_command, _("\ |
188e1fa9 TT |
2736 | Expressions to display when program stops, with code numbers.\n\ |
2737 | Usage: info display")); | |
c906108c | 2738 | |
1a966eab AC |
2739 | add_cmd ("undisplay", class_vars, undisplay_command, _("\ |
2740 | Cancel some expressions to be displayed when program stops.\n\ | |
188e1fa9 | 2741 | Usage: undisplay [NUM]...\n\ |
c906108c SS |
2742 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2743 | No argument means cancel all automatic-display expressions.\n\ | |
2744 | \"delete display\" has the same effect as this command.\n\ | |
1a966eab | 2745 | Do \"info display\" to see current list of code numbers."), |
c5aa993b | 2746 | &cmdlist); |
c906108c | 2747 | |
1bedd215 AC |
2748 | add_com ("display", class_vars, display_command, _("\ |
2749 | Print value of expression EXP each time the program stops.\n\ | |
188e1fa9 | 2750 | Usage: display[/FMT] EXP\n\ |
c906108c SS |
2751 | /FMT may be used before EXP as in the \"print\" command.\n\ |
2752 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2753 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2754 | and examining is done as in the \"x\" command.\n\n\ | |
2755 | With no argument, display all currently requested auto-display expressions.\n\ | |
1bedd215 | 2756 | Use \"undisplay\" to cancel display requests previously made.")); |
c906108c | 2757 | |
c9174737 | 2758 | add_cmd ("display", class_vars, enable_display_command, _("\ |
1a966eab | 2759 | Enable some expressions to be displayed when program stops.\n\ |
188e1fa9 | 2760 | Usage: enable display [NUM]...\n\ |
c906108c SS |
2761 | Arguments are the code numbers of the expressions to resume displaying.\n\ |
2762 | No argument means enable all automatic-display expressions.\n\ | |
1a966eab | 2763 | Do \"info display\" to see current list of code numbers."), &enablelist); |
c906108c | 2764 | |
1a966eab AC |
2765 | add_cmd ("display", class_vars, disable_display_command, _("\ |
2766 | Disable some expressions to be displayed when program stops.\n\ | |
188e1fa9 | 2767 | Usage: disable display [NUM]...\n\ |
c906108c SS |
2768 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2769 | No argument means disable all automatic-display expressions.\n\ | |
1a966eab | 2770 | Do \"info display\" to see current list of code numbers."), &disablelist); |
c906108c | 2771 | |
1a966eab AC |
2772 | add_cmd ("display", class_vars, undisplay_command, _("\ |
2773 | Cancel some expressions to be displayed when program stops.\n\ | |
188e1fa9 | 2774 | Usage: delete display [NUM]...\n\ |
c906108c SS |
2775 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2776 | No argument means cancel all automatic-display expressions.\n\ | |
1a966eab | 2777 | Do \"info display\" to see current list of code numbers."), &deletelist); |
c906108c | 2778 | |
1bedd215 | 2779 | add_com ("printf", class_vars, printf_command, _("\ |
80ae639d | 2780 | Formatted printing, like the C \"printf\" function.\n\ |
188e1fa9 | 2781 | Usage: printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ |
80ae639d | 2782 | This supports most C printf format specifications, like %s, %d, etc.")); |
c906108c | 2783 | |
1bedd215 AC |
2784 | add_com ("output", class_vars, output_command, _("\ |
2785 | Like \"print\" but don't put in value history and don't print newline.\n\ | |
188e1fa9 | 2786 | Usage: output EXP\n\ |
1bedd215 | 2787 | This is useful in user-defined commands.")); |
c906108c | 2788 | |
1bedd215 | 2789 | add_prefix_cmd ("set", class_vars, set_command, _("\ |
188e1fa9 TT |
2790 | Evaluate expression EXP and assign result to variable VAR\n\ |
2791 | Usage: set VAR = EXP\n\ | |
2792 | This uses assignment syntax appropriate for the current language\n\ | |
2793 | (VAR = EXP or VAR := EXP for example).\n\ | |
2794 | VAR may be a debugger \"convenience\" variable (names starting\n\ | |
c906108c | 2795 | with $), a register (a few standard names starting with $), or an actual\n\ |
1bedd215 AC |
2796 | variable in the program being debugged. EXP is any valid expression.\n\ |
2797 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
2798 | \n\ | |
2799 | With a subcommand, this command modifies parts of the gdb environment.\n\ | |
2800 | You can see these environment settings with the \"show\" command."), | |
c5aa993b | 2801 | &setlist, "set ", 1, &cmdlist); |
c906108c | 2802 | if (dbx_commands) |
0b39b52e | 2803 | add_com ("assign", class_vars, set_command, _("\ |
188e1fa9 TT |
2804 | Evaluate expression EXP and assign result to variable VAR\n\ |
2805 | Usage: assign VAR = EXP\n\ | |
2806 | This uses assignment syntax appropriate for the current language\n\ | |
2807 | (VAR = EXP or VAR := EXP for example).\n\ | |
2808 | VAR may be a debugger \"convenience\" variable (names starting\n\ | |
c906108c | 2809 | with $), a register (a few standard names starting with $), or an actual\n\ |
1bedd215 AC |
2810 | variable in the program being debugged. EXP is any valid expression.\n\ |
2811 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
c906108c | 2812 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
1bedd215 | 2813 | You can see these environment settings with the \"show\" command.")); |
c906108c | 2814 | |
0df8b418 | 2815 | /* "call" is the same as "set", but handy for dbx users to call fns. */ |
1bedd215 AC |
2816 | c = add_com ("call", class_vars, call_command, _("\ |
2817 | Call a function in the program.\n\ | |
188e1fa9 | 2818 | Usage: call EXP\n\ |
c906108c SS |
2819 | The argument is the function name and arguments, in the notation of the\n\ |
2820 | current working language. The result is printed and saved in the value\n\ | |
1bedd215 | 2821 | history, if it is not void.")); |
7d8062de | 2822 | set_cmd_completer_handle_brkchars (c, print_command_completer); |
c906108c | 2823 | |
1a966eab | 2824 | add_cmd ("variable", class_vars, set_command, _("\ |
188e1fa9 TT |
2825 | Evaluate expression EXP and assign result to variable VAR\n\ |
2826 | Usage: set variable VAR = EXP\n\ | |
2827 | This uses assignment syntax appropriate for the current language\n\ | |
2828 | (VAR = EXP or VAR := EXP for example).\n\ | |
2829 | VAR may be a debugger \"convenience\" variable (names starting\n\ | |
c906108c SS |
2830 | with $), a register (a few standard names starting with $), or an actual\n\ |
2831 | variable in the program being debugged. EXP is any valid expression.\n\ | |
1a966eab | 2832 | This may usually be abbreviated to simply \"set\"."), |
c5aa993b | 2833 | &setlist); |
3fcded8f | 2834 | add_alias_cmd ("var", "variable", class_vars, 0, &setlist); |
c906108c | 2835 | |
7d8062de PA |
2836 | const auto print_opts = make_value_print_options_def_group (nullptr); |
2837 | ||
2838 | static const std::string print_help = gdb::option::build_help (N_("\ | |
1bedd215 | 2839 | Print value of expression EXP.\n\ |
7d8062de PA |
2840 | Usage: print [[OPTION]... --] [/FMT] [EXP]\n\ |
2841 | \n\ | |
2842 | Options:\n\ | |
2843 | %OPTIONS%\ | |
2844 | Note: because this command accepts arbitrary expressions, if you\n\ | |
2845 | specify any command option, you must use a double dash (\"--\")\n\ | |
2846 | to mark the end of option processing. E.g.: \"print -o -- myobj\".\n\ | |
2847 | \n\ | |
c906108c SS |
2848 | Variables accessible are those of the lexical environment of the selected\n\ |
2849 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2850 | \n\ | |
2851 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2852 | $$NUM refers to NUM'th value back from the last one.\n\ | |
1bedd215 AC |
2853 | Names starting with $ refer to registers (with the values they would have\n\ |
2854 | if the program were to return to the stack frame now selected, restoring\n\ | |
c906108c SS |
2855 | all registers saved by frames farther in) or else to debugger\n\ |
2856 | \"convenience\" variables (any such name not a known register).\n\ | |
1bedd215 AC |
2857 | Use assignment expressions to give values to convenience variables.\n\ |
2858 | \n\ | |
c906108c SS |
2859 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ |
2860 | @ is a binary operator for treating consecutive data objects\n\ | |
2861 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2862 | element is FOO, whose second element is stored in the space following\n\ | |
2863 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
1bedd215 AC |
2864 | resides in memory.\n\ |
2865 | \n\ | |
c906108c | 2866 | EXP may be preceded with /FMT, where FMT is a format letter\n\ |
7d8062de PA |
2867 | but no count or size letter (see \"x\" command)."), |
2868 | print_opts); | |
2869 | ||
2870 | c = add_com ("print", class_vars, print_command, print_help.c_str ()); | |
2871 | set_cmd_completer_handle_brkchars (c, print_command_completer); | |
c906108c | 2872 | add_com_alias ("p", "print", class_vars, 1); |
e93a8774 | 2873 | add_com_alias ("inspect", "print", class_vars, 1); |
c906108c | 2874 | |
35096d9d AC |
2875 | add_setshow_uinteger_cmd ("max-symbolic-offset", no_class, |
2876 | &max_symbolic_offset, _("\ | |
188e1fa9 TT |
2877 | Set the largest offset that will be printed in <SYMBOL+1234> form."), _("\ |
2878 | Show the largest offset that will be printed in <SYMBOL+1234> form."), _("\ | |
f81d1120 PA |
2879 | Tell GDB to only display the symbolic form of an address if the\n\ |
2880 | offset between the closest earlier symbol and the address is less than\n\ | |
2881 | the specified maximum offset. The default is \"unlimited\", which tells GDB\n\ | |
2882 | to always print the symbolic form of an address if any symbol precedes\n\ | |
2883 | it. Zero is equivalent to \"unlimited\"."), | |
35096d9d | 2884 | NULL, |
920d2a44 | 2885 | show_max_symbolic_offset, |
35096d9d | 2886 | &setprintlist, &showprintlist); |
5bf193a2 AC |
2887 | add_setshow_boolean_cmd ("symbol-filename", no_class, |
2888 | &print_symbol_filename, _("\ | |
188e1fa9 TT |
2889 | Set printing of source filename and line number with <SYMBOL>."), _("\ |
2890 | Show printing of source filename and line number with <SYMBOL>."), NULL, | |
5bf193a2 | 2891 | NULL, |
920d2a44 | 2892 | show_print_symbol_filename, |
5bf193a2 | 2893 | &setprintlist, &showprintlist); |
f1421989 HZ |
2894 | |
2895 | add_com ("eval", no_class, eval_command, _("\ | |
188e1fa9 TT |
2896 | Construct a GDB command and then evaluate it.\n\ |
2897 | Usage: eval \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
2898 | Convert the arguments to a string as \"printf\" would, but then\n\ | |
2899 | treat this string as a command line, and evaluate it.")); | |
c906108c | 2900 | } |