Commit | Line | Data |
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c906108c | 1 | /* Print values for GNU debugger GDB. |
e2ad119d | 2 | |
e2882c85 | 3 | Copyright (C) 1986-2018 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
c906108c SS |
21 | #include "frame.h" |
22 | #include "symtab.h" | |
23 | #include "gdbtypes.h" | |
24 | #include "value.h" | |
25 | #include "language.h" | |
26 | #include "expression.h" | |
27 | #include "gdbcore.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "target.h" | |
30 | #include "breakpoint.h" | |
31 | #include "demangle.h" | |
50f182aa | 32 | #include "gdb-demangle.h" |
c906108c SS |
33 | #include "valprint.h" |
34 | #include "annotate.h" | |
c5aa993b JM |
35 | #include "symfile.h" /* for overlay functions */ |
36 | #include "objfiles.h" /* ditto */ | |
c94fdfd0 | 37 | #include "completer.h" /* for completion functions */ |
8b93c638 | 38 | #include "ui-out.h" |
fe898f56 | 39 | #include "block.h" |
92bf2b80 | 40 | #include "disasm.h" |
f69fdf9b | 41 | #include "target-float.h" |
76727919 | 42 | #include "observable.h" |
a3247a22 | 43 | #include "solist.h" |
a3247a22 | 44 | #include "parser-defs.h" |
6c7a06a3 | 45 | #include "charset.h" |
704e9165 | 46 | #include "arch-utils.h" |
e9cafbcc | 47 | #include "cli/cli-utils.h" |
01770bbd | 48 | #include "cli/cli-script.h" |
d3ce09f5 | 49 | #include "format.h" |
05cba821 | 50 | #include "source.h" |
d5722aa2 | 51 | #include "common/byte-vector.h" |
c906108c | 52 | |
c906108c SS |
53 | /* Last specified output format. */ |
54 | ||
a6bac58e | 55 | static char last_format = 0; |
c906108c SS |
56 | |
57 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
58 | ||
59 | static char last_size = 'w'; | |
60 | ||
9be2ae8f TT |
61 | /* Last specified count for the 'x' command. */ |
62 | ||
63 | static int last_count; | |
64 | ||
5d3729b5 | 65 | /* Default address to examine next, and associated architecture. */ |
c906108c | 66 | |
5d3729b5 | 67 | static struct gdbarch *next_gdbarch; |
c906108c SS |
68 | static CORE_ADDR next_address; |
69 | ||
a4642986 MR |
70 | /* Number of delay instructions following current disassembled insn. */ |
71 | ||
72 | static int branch_delay_insns; | |
73 | ||
c906108c SS |
74 | /* Last address examined. */ |
75 | ||
76 | static CORE_ADDR last_examine_address; | |
77 | ||
78 | /* Contents of last address examined. | |
79 | This is not valid past the end of the `x' command! */ | |
80 | ||
9b558729 | 81 | static value_ref_ptr last_examine_value; |
c906108c SS |
82 | |
83 | /* Largest offset between a symbolic value and an address, that will be | |
84 | printed as `0x1234 <symbol+offset>'. */ | |
85 | ||
86 | static unsigned int max_symbolic_offset = UINT_MAX; | |
920d2a44 AC |
87 | static void |
88 | show_max_symbolic_offset (struct ui_file *file, int from_tty, | |
89 | struct cmd_list_element *c, const char *value) | |
90 | { | |
3e43a32a MS |
91 | fprintf_filtered (file, |
92 | _("The largest offset that will be " | |
93 | "printed in <symbol+1234> form is %s.\n"), | |
920d2a44 AC |
94 | value); |
95 | } | |
c906108c SS |
96 | |
97 | /* Append the source filename and linenumber of the symbol when | |
98 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
99 | static int print_symbol_filename = 0; | |
920d2a44 AC |
100 | static void |
101 | show_print_symbol_filename (struct ui_file *file, int from_tty, | |
102 | struct cmd_list_element *c, const char *value) | |
103 | { | |
3e43a32a MS |
104 | fprintf_filtered (file, _("Printing of source filename and " |
105 | "line number with <symbol> is %s.\n"), | |
920d2a44 AC |
106 | value); |
107 | } | |
c906108c SS |
108 | |
109 | /* Number of auto-display expression currently being displayed. | |
9d8fa392 | 110 | So that we can disable it if we get a signal within it. |
c906108c SS |
111 | -1 when not doing one. */ |
112 | ||
5a18e302 | 113 | static int current_display_number; |
c906108c | 114 | |
c906108c | 115 | struct display |
c5aa993b JM |
116 | { |
117 | /* Chain link to next auto-display item. */ | |
118 | struct display *next; | |
6c95b8df | 119 | |
fa8a61dc TT |
120 | /* The expression as the user typed it. */ |
121 | char *exp_string; | |
6c95b8df | 122 | |
c5aa993b | 123 | /* Expression to be evaluated and displayed. */ |
4d01a485 | 124 | expression_up exp; |
6c95b8df | 125 | |
c5aa993b JM |
126 | /* Item number of this auto-display item. */ |
127 | int number; | |
6c95b8df | 128 | |
c5aa993b JM |
129 | /* Display format specified. */ |
130 | struct format_data format; | |
6c95b8df PA |
131 | |
132 | /* Program space associated with `block'. */ | |
133 | struct program_space *pspace; | |
134 | ||
0df8b418 | 135 | /* Innermost block required by this expression when evaluated. */ |
270140bd | 136 | const struct block *block; |
6c95b8df | 137 | |
0df8b418 | 138 | /* Status of this display (enabled or disabled). */ |
b5de0fa7 | 139 | int enabled_p; |
c5aa993b | 140 | }; |
c906108c SS |
141 | |
142 | /* Chain of expressions whose values should be displayed | |
143 | automatically each time the program stops. */ | |
144 | ||
145 | static struct display *display_chain; | |
146 | ||
147 | static int display_number; | |
148 | ||
c9174737 PA |
149 | /* Walk the following statement or block through all displays. |
150 | ALL_DISPLAYS_SAFE does so even if the statement deletes the current | |
151 | display. */ | |
3c3fe74c PA |
152 | |
153 | #define ALL_DISPLAYS(B) \ | |
154 | for (B = display_chain; B; B = B->next) | |
155 | ||
c9174737 PA |
156 | #define ALL_DISPLAYS_SAFE(B,TMP) \ |
157 | for (B = display_chain; \ | |
158 | B ? (TMP = B->next, 1): 0; \ | |
159 | B = TMP) | |
160 | ||
0df8b418 | 161 | /* Prototypes for local functions. */ |
c906108c | 162 | |
a14ed312 | 163 | static void do_one_display (struct display *); |
c906108c | 164 | \f |
c5aa993b | 165 | |
c906108c SS |
166 | /* Decode a format specification. *STRING_PTR should point to it. |
167 | OFORMAT and OSIZE are used as defaults for the format and size | |
168 | if none are given in the format specification. | |
169 | If OSIZE is zero, then the size field of the returned value | |
170 | should be set only if a size is explicitly specified by the | |
171 | user. | |
172 | The structure returned describes all the data | |
173 | found in the specification. In addition, *STRING_PTR is advanced | |
174 | past the specification and past all whitespace following it. */ | |
175 | ||
176 | static struct format_data | |
6f937416 | 177 | decode_format (const char **string_ptr, int oformat, int osize) |
c906108c SS |
178 | { |
179 | struct format_data val; | |
6f937416 | 180 | const char *p = *string_ptr; |
c906108c SS |
181 | |
182 | val.format = '?'; | |
183 | val.size = '?'; | |
184 | val.count = 1; | |
a6bac58e | 185 | val.raw = 0; |
c906108c | 186 | |
bb556f1f TK |
187 | if (*p == '-') |
188 | { | |
189 | val.count = -1; | |
190 | p++; | |
191 | } | |
c906108c | 192 | if (*p >= '0' && *p <= '9') |
bb556f1f | 193 | val.count *= atoi (p); |
c5aa993b JM |
194 | while (*p >= '0' && *p <= '9') |
195 | p++; | |
c906108c SS |
196 | |
197 | /* Now process size or format letters that follow. */ | |
198 | ||
199 | while (1) | |
200 | { | |
201 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
202 | val.size = *p++; | |
a6bac58e TT |
203 | else if (*p == 'r') |
204 | { | |
205 | val.raw = 1; | |
206 | p++; | |
207 | } | |
c906108c SS |
208 | else if (*p >= 'a' && *p <= 'z') |
209 | val.format = *p++; | |
210 | else | |
211 | break; | |
212 | } | |
213 | ||
2f433492 | 214 | *string_ptr = skip_spaces (p); |
c906108c SS |
215 | |
216 | /* Set defaults for format and size if not specified. */ | |
217 | if (val.format == '?') | |
218 | { | |
219 | if (val.size == '?') | |
220 | { | |
221 | /* Neither has been specified. */ | |
222 | val.format = oformat; | |
223 | val.size = osize; | |
224 | } | |
225 | else | |
226 | /* If a size is specified, any format makes a reasonable | |
227 | default except 'i'. */ | |
228 | val.format = oformat == 'i' ? 'x' : oformat; | |
229 | } | |
230 | else if (val.size == '?') | |
231 | switch (val.format) | |
232 | { | |
233 | case 'a': | |
5d3729b5 UW |
234 | /* Pick the appropriate size for an address. This is deferred |
235 | until do_examine when we know the actual architecture to use. | |
236 | A special size value of 'a' is used to indicate this case. */ | |
237 | val.size = osize ? 'a' : osize; | |
c906108c SS |
238 | break; |
239 | case 'f': | |
240 | /* Floating point has to be word or giantword. */ | |
241 | if (osize == 'w' || osize == 'g') | |
242 | val.size = osize; | |
243 | else | |
244 | /* Default it to giantword if the last used size is not | |
245 | appropriate. */ | |
246 | val.size = osize ? 'g' : osize; | |
247 | break; | |
248 | case 'c': | |
249 | /* Characters default to one byte. */ | |
250 | val.size = osize ? 'b' : osize; | |
251 | break; | |
9a22f0d0 | 252 | case 's': |
3e43a32a MS |
253 | /* Display strings with byte size chars unless explicitly |
254 | specified. */ | |
9a22f0d0 PM |
255 | val.size = '\0'; |
256 | break; | |
257 | ||
c906108c SS |
258 | default: |
259 | /* The default is the size most recently specified. */ | |
260 | val.size = osize; | |
261 | } | |
262 | ||
263 | return val; | |
264 | } | |
265 | \f | |
79a45b7d | 266 | /* Print value VAL on stream according to OPTIONS. |
c906108c | 267 | Do not end with a newline. |
c906108c | 268 | SIZE is the letter for the size of datum being printed. |
ea37ba09 DJ |
269 | This is used to pad hex numbers so they line up. SIZE is 0 |
270 | for print / output and set for examine. */ | |
c906108c SS |
271 | |
272 | static void | |
79a45b7d TT |
273 | print_formatted (struct value *val, int size, |
274 | const struct value_print_options *options, | |
fba45db2 | 275 | struct ui_file *stream) |
c906108c | 276 | { |
df407dfe | 277 | struct type *type = check_typedef (value_type (val)); |
c906108c SS |
278 | int len = TYPE_LENGTH (type); |
279 | ||
280 | if (VALUE_LVAL (val) == lval_memory) | |
42ae5230 | 281 | next_address = value_address (val) + len; |
c906108c | 282 | |
ea37ba09 | 283 | if (size) |
c906108c | 284 | { |
79a45b7d | 285 | switch (options->format) |
ea37ba09 DJ |
286 | { |
287 | case 's': | |
6c7a06a3 TT |
288 | { |
289 | struct type *elttype = value_type (val); | |
ad3bbd48 | 290 | |
42ae5230 | 291 | next_address = (value_address (val) |
09ca9e2e | 292 | + val_print_string (elttype, NULL, |
42ae5230 | 293 | value_address (val), -1, |
9a22f0d0 | 294 | stream, options) * len); |
6c7a06a3 | 295 | } |
ea37ba09 | 296 | return; |
c906108c | 297 | |
ea37ba09 DJ |
298 | case 'i': |
299 | /* We often wrap here if there are long symbolic names. */ | |
300 | wrap_here (" "); | |
42ae5230 | 301 | next_address = (value_address (val) |
13274fc3 UW |
302 | + gdb_print_insn (get_type_arch (type), |
303 | value_address (val), stream, | |
ea37ba09 DJ |
304 | &branch_delay_insns)); |
305 | return; | |
306 | } | |
c906108c | 307 | } |
ea37ba09 | 308 | |
79a45b7d | 309 | if (options->format == 0 || options->format == 's' |
4e885b20 | 310 | || TYPE_CODE (type) == TYPE_CODE_REF |
ea37ba09 DJ |
311 | || TYPE_CODE (type) == TYPE_CODE_ARRAY |
312 | || TYPE_CODE (type) == TYPE_CODE_STRING | |
313 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
314 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
315 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
79a45b7d | 316 | value_print (val, stream, options); |
ea37ba09 | 317 | else |
b021a221 MS |
318 | /* User specified format, so don't look to the type to tell us |
319 | what to do. */ | |
ab2188aa | 320 | val_print_scalar_formatted (type, |
ab2188aa PA |
321 | value_embedded_offset (val), |
322 | val, | |
323 | options, size, stream); | |
c906108c SS |
324 | } |
325 | ||
b806fb9a UW |
326 | /* Return builtin floating point type of same length as TYPE. |
327 | If no such type is found, return TYPE itself. */ | |
328 | static struct type * | |
50810684 | 329 | float_type_from_length (struct type *type) |
b806fb9a | 330 | { |
50810684 | 331 | struct gdbarch *gdbarch = get_type_arch (type); |
b806fb9a | 332 | const struct builtin_type *builtin = builtin_type (gdbarch); |
b806fb9a | 333 | |
744a8059 | 334 | if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_float)) |
b806fb9a | 335 | type = builtin->builtin_float; |
744a8059 | 336 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_double)) |
b806fb9a | 337 | type = builtin->builtin_double; |
744a8059 | 338 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_long_double)) |
b806fb9a UW |
339 | type = builtin->builtin_long_double; |
340 | ||
341 | return type; | |
342 | } | |
343 | ||
c906108c | 344 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, |
ab2188aa PA |
345 | according to OPTIONS and SIZE on STREAM. Formats s and i are not |
346 | supported at this level. */ | |
c906108c SS |
347 | |
348 | void | |
7c543f7b | 349 | print_scalar_formatted (const gdb_byte *valaddr, struct type *type, |
79a45b7d TT |
350 | const struct value_print_options *options, |
351 | int size, struct ui_file *stream) | |
c906108c | 352 | { |
50810684 | 353 | struct gdbarch *gdbarch = get_type_arch (type); |
c906108c | 354 | unsigned int len = TYPE_LENGTH (type); |
69feb676 | 355 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 356 | |
ab2188aa PA |
357 | /* String printing should go through val_print_scalar_formatted. */ |
358 | gdb_assert (options->format != 's'); | |
ea37ba09 | 359 | |
ef166cf4 | 360 | /* If the value is a pointer, and pointers and addresses are not the |
d0aee0c4 | 361 | same, then at this point, the value's length (in target bytes) is |
17a912b6 | 362 | gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */ |
ef166cf4 | 363 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
69feb676 | 364 | len = gdbarch_addr_bit (gdbarch) / TARGET_CHAR_BIT; |
ef166cf4 | 365 | |
c906108c SS |
366 | /* If we are printing it as unsigned, truncate it in case it is actually |
367 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
368 | (if shorts are 16 bits) instead of 4294967295). */ | |
d9109c80 TT |
369 | if (options->format != 'c' |
370 | && (options->format != 'd' || TYPE_UNSIGNED (type))) | |
c906108c | 371 | { |
d9109c80 TT |
372 | if (len < TYPE_LENGTH (type) && byte_order == BFD_ENDIAN_BIG) |
373 | valaddr += TYPE_LENGTH (type) - len; | |
c906108c SS |
374 | } |
375 | ||
d9109c80 | 376 | if (size != 0 && (options->format == 'x' || options->format == 't')) |
c906108c | 377 | { |
d9109c80 TT |
378 | /* Truncate to fit. */ |
379 | unsigned newlen; | |
380 | switch (size) | |
c906108c | 381 | { |
d9109c80 TT |
382 | case 'b': |
383 | newlen = 1; | |
384 | break; | |
385 | case 'h': | |
386 | newlen = 2; | |
387 | break; | |
388 | case 'w': | |
389 | newlen = 4; | |
390 | break; | |
391 | case 'g': | |
392 | newlen = 8; | |
393 | break; | |
394 | default: | |
395 | error (_("Undefined output size \"%c\"."), size); | |
c906108c | 396 | } |
d9109c80 TT |
397 | if (newlen < len && byte_order == BFD_ENDIAN_BIG) |
398 | valaddr += len - newlen; | |
399 | len = newlen; | |
400 | } | |
c906108c | 401 | |
d9109c80 TT |
402 | /* Historically gdb has printed floats by first casting them to a |
403 | long, and then printing the long. PR cli/16242 suggests changing | |
404 | this to using C-style hex float format. */ | |
d5722aa2 | 405 | gdb::byte_vector converted_float_bytes; |
d9109c80 TT |
406 | if (TYPE_CODE (type) == TYPE_CODE_FLT |
407 | && (options->format == 'o' | |
408 | || options->format == 'x' | |
409 | || options->format == 't' | |
d6382fff TT |
410 | || options->format == 'z' |
411 | || options->format == 'd' | |
412 | || options->format == 'u')) | |
d9109c80 TT |
413 | { |
414 | LONGEST val_long = unpack_long (type, valaddr); | |
415 | converted_float_bytes.resize (TYPE_LENGTH (type)); | |
416 | store_signed_integer (converted_float_bytes.data (), TYPE_LENGTH (type), | |
417 | byte_order, val_long); | |
418 | valaddr = converted_float_bytes.data (); | |
419 | } | |
c906108c | 420 | |
fdf0cbc2 UW |
421 | /* Printing a non-float type as 'f' will interpret the data as if it were |
422 | of a floating-point type of the same length, if that exists. Otherwise, | |
423 | the data is printed as integer. */ | |
424 | char format = options->format; | |
425 | if (format == 'f' && TYPE_CODE (type) != TYPE_CODE_FLT) | |
426 | { | |
427 | type = float_type_from_length (type); | |
428 | if (TYPE_CODE (type) != TYPE_CODE_FLT) | |
429 | format = 0; | |
430 | } | |
431 | ||
432 | switch (format) | |
d9109c80 TT |
433 | { |
434 | case 'o': | |
435 | print_octal_chars (stream, valaddr, len, byte_order); | |
436 | break; | |
d6382fff TT |
437 | case 'd': |
438 | print_decimal_chars (stream, valaddr, len, true, byte_order); | |
439 | break; | |
c906108c | 440 | case 'u': |
d9109c80 | 441 | print_decimal_chars (stream, valaddr, len, false, byte_order); |
c906108c | 442 | break; |
d9109c80 | 443 | case 0: |
d9109c80 TT |
444 | if (TYPE_CODE (type) != TYPE_CODE_FLT) |
445 | { | |
446 | print_decimal_chars (stream, valaddr, len, !TYPE_UNSIGNED (type), | |
447 | byte_order); | |
448 | break; | |
449 | } | |
450 | /* FALLTHROUGH */ | |
451 | case 'f': | |
d9109c80 | 452 | print_floating (valaddr, type, stream); |
c906108c SS |
453 | break; |
454 | ||
d9109c80 TT |
455 | case 't': |
456 | print_binary_chars (stream, valaddr, len, byte_order, size > 0); | |
457 | break; | |
458 | case 'x': | |
459 | print_hex_chars (stream, valaddr, len, byte_order, size > 0); | |
460 | break; | |
461 | case 'z': | |
462 | print_hex_chars (stream, valaddr, len, byte_order, true); | |
c906108c | 463 | break; |
c906108c | 464 | case 'c': |
79a45b7d TT |
465 | { |
466 | struct value_print_options opts = *options; | |
69feb676 | 467 | |
d9109c80 TT |
468 | LONGEST val_long = unpack_long (type, valaddr); |
469 | ||
ad3bbd48 | 470 | opts.format = 0; |
79a45b7d | 471 | if (TYPE_UNSIGNED (type)) |
69feb676 UW |
472 | type = builtin_type (gdbarch)->builtin_true_unsigned_char; |
473 | else | |
474 | type = builtin_type (gdbarch)->builtin_true_char; | |
475 | ||
476 | value_print (value_from_longest (type, val_long), stream, &opts); | |
79a45b7d | 477 | } |
c906108c SS |
478 | break; |
479 | ||
d9109c80 | 480 | case 'a': |
c906108c | 481 | { |
d9109c80 | 482 | CORE_ADDR addr = unpack_pointer (type, valaddr); |
c906108c | 483 | |
d9109c80 | 484 | print_address (gdbarch, addr, stream); |
c906108c SS |
485 | } |
486 | break; | |
487 | ||
488 | default: | |
fdf0cbc2 | 489 | error (_("Undefined output format \"%c\"."), format); |
c906108c SS |
490 | } |
491 | } | |
492 | ||
493 | /* Specify default address for `x' command. | |
675dcf4f | 494 | The `info lines' command uses this. */ |
c906108c SS |
495 | |
496 | void | |
8b9b9e1a | 497 | set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 498 | { |
8b9b9e1a UW |
499 | struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
500 | ||
5d3729b5 | 501 | next_gdbarch = gdbarch; |
c906108c SS |
502 | next_address = addr; |
503 | ||
504 | /* Make address available to the user as $_. */ | |
505 | set_internalvar (lookup_internalvar ("_"), | |
8b9b9e1a | 506 | value_from_pointer (ptr_type, addr)); |
c906108c SS |
507 | } |
508 | ||
509 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
510 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
511 | Optionally also print source file and line number, if available. | |
512 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
513 | or to interpret it as a possible C++ name and convert it back to source | |
514 | form. However note that DO_DEMANGLE can be overridden by the specific | |
9cb709b6 TT |
515 | settings of the demangle and asm_demangle variables. Returns |
516 | non-zero if anything was printed; zero otherwise. */ | |
c906108c | 517 | |
9cb709b6 | 518 | int |
22e722e1 DJ |
519 | print_address_symbolic (struct gdbarch *gdbarch, CORE_ADDR addr, |
520 | struct ui_file *stream, | |
a121b7c1 | 521 | int do_demangle, const char *leadin) |
dfcd3bfb | 522 | { |
c7110220 | 523 | std::string name, filename; |
dfcd3bfb JM |
524 | int unmapped = 0; |
525 | int offset = 0; | |
526 | int line = 0; | |
527 | ||
22e722e1 | 528 | if (build_address_symbolic (gdbarch, addr, do_demangle, &name, &offset, |
675dcf4f | 529 | &filename, &line, &unmapped)) |
c7110220 | 530 | return 0; |
dfcd3bfb JM |
531 | |
532 | fputs_filtered (leadin, stream); | |
533 | if (unmapped) | |
534 | fputs_filtered ("<*", stream); | |
535 | else | |
536 | fputs_filtered ("<", stream); | |
c7110220 | 537 | fputs_filtered (name.c_str (), stream); |
dfcd3bfb JM |
538 | if (offset != 0) |
539 | fprintf_filtered (stream, "+%u", (unsigned int) offset); | |
540 | ||
541 | /* Append source filename and line number if desired. Give specific | |
542 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
c7110220 | 543 | if (print_symbol_filename && !filename.empty ()) |
dfcd3bfb JM |
544 | { |
545 | if (line != -1) | |
c7110220 | 546 | fprintf_filtered (stream, " at %s:%d", filename.c_str (), line); |
dfcd3bfb | 547 | else |
c7110220 | 548 | fprintf_filtered (stream, " in %s", filename.c_str ()); |
dfcd3bfb JM |
549 | } |
550 | if (unmapped) | |
551 | fputs_filtered ("*>", stream); | |
552 | else | |
553 | fputs_filtered (">", stream); | |
554 | ||
9cb709b6 | 555 | return 1; |
dfcd3bfb JM |
556 | } |
557 | ||
c7110220 TT |
558 | /* See valprint.h. */ |
559 | ||
dfcd3bfb | 560 | int |
22e722e1 DJ |
561 | build_address_symbolic (struct gdbarch *gdbarch, |
562 | CORE_ADDR addr, /* IN */ | |
dfcd3bfb | 563 | int do_demangle, /* IN */ |
c7110220 | 564 | std::string *name, /* OUT */ |
dfcd3bfb | 565 | int *offset, /* OUT */ |
c7110220 | 566 | std::string *filename, /* OUT */ |
dfcd3bfb JM |
567 | int *line, /* OUT */ |
568 | int *unmapped) /* OUT */ | |
c906108c | 569 | { |
77e371c0 | 570 | struct bound_minimal_symbol msymbol; |
c906108c | 571 | struct symbol *symbol; |
c906108c | 572 | CORE_ADDR name_location = 0; |
714835d5 | 573 | struct obj_section *section = NULL; |
0d5cff50 | 574 | const char *name_temp = ""; |
dfcd3bfb | 575 | |
89c83b10 | 576 | /* Let's say it is mapped (not unmapped). */ |
dfcd3bfb | 577 | *unmapped = 0; |
c906108c | 578 | |
dfcd3bfb | 579 | /* Determine if the address is in an overlay, and whether it is |
675dcf4f | 580 | mapped. */ |
c906108c SS |
581 | if (overlay_debugging) |
582 | { | |
583 | section = find_pc_overlay (addr); | |
584 | if (pc_in_unmapped_range (addr, section)) | |
585 | { | |
dfcd3bfb | 586 | *unmapped = 1; |
c906108c SS |
587 | addr = overlay_mapped_address (addr, section); |
588 | } | |
589 | } | |
590 | ||
c906108c SS |
591 | /* First try to find the address in the symbol table, then |
592 | in the minsyms. Take the closest one. */ | |
593 | ||
594 | /* This is defective in the sense that it only finds text symbols. So | |
595 | really this is kind of pointless--we should make sure that the | |
596 | minimal symbols have everything we need (by changing that we could | |
597 | save some memory, but for many debug format--ELF/DWARF or | |
598 | anything/stabs--it would be inconvenient to eliminate those minimal | |
599 | symbols anyway). */ | |
77e371c0 | 600 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section); |
c906108c SS |
601 | symbol = find_pc_sect_function (addr, section); |
602 | ||
603 | if (symbol) | |
604 | { | |
22e722e1 DJ |
605 | /* If this is a function (i.e. a code address), strip out any |
606 | non-address bits. For instance, display a pointer to the | |
607 | first instruction of a Thumb function as <function>; the | |
608 | second instruction will be <function+2>, even though the | |
609 | pointer is <function+3>. This matches the ISA behavior. */ | |
610 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
611 | ||
2b1ffcfd | 612 | name_location = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (symbol)); |
406fc7fb | 613 | if (do_demangle || asm_demangle) |
de5ad195 | 614 | name_temp = SYMBOL_PRINT_NAME (symbol); |
c906108c | 615 | else |
3567439c | 616 | name_temp = SYMBOL_LINKAGE_NAME (symbol); |
c906108c SS |
617 | } |
618 | ||
77e371c0 TT |
619 | if (msymbol.minsym != NULL |
620 | && MSYMBOL_HAS_SIZE (msymbol.minsym) | |
621 | && MSYMBOL_SIZE (msymbol.minsym) == 0 | |
622 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text | |
623 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text_gnu_ifunc | |
624 | && MSYMBOL_TYPE (msymbol.minsym) != mst_file_text) | |
625 | msymbol.minsym = NULL; | |
9cb709b6 | 626 | |
77e371c0 | 627 | if (msymbol.minsym != NULL) |
c906108c | 628 | { |
77e371c0 | 629 | if (BMSYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL) |
c906108c | 630 | { |
fe8400b4 WN |
631 | /* If this is a function (i.e. a code address), strip out any |
632 | non-address bits. For instance, display a pointer to the | |
633 | first instruction of a Thumb function as <function>; the | |
634 | second instruction will be <function+2>, even though the | |
635 | pointer is <function+3>. This matches the ISA behavior. */ | |
77e371c0 TT |
636 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_text |
637 | || MSYMBOL_TYPE (msymbol.minsym) == mst_text_gnu_ifunc | |
638 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_text | |
639 | || MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
fe8400b4 WN |
640 | addr = gdbarch_addr_bits_remove (gdbarch, addr); |
641 | ||
c906108c SS |
642 | /* The msymbol is closer to the address than the symbol; |
643 | use the msymbol instead. */ | |
644 | symbol = 0; | |
77e371c0 | 645 | name_location = BMSYMBOL_VALUE_ADDRESS (msymbol); |
406fc7fb | 646 | if (do_demangle || asm_demangle) |
77e371c0 | 647 | name_temp = MSYMBOL_PRINT_NAME (msymbol.minsym); |
c906108c | 648 | else |
77e371c0 | 649 | name_temp = MSYMBOL_LINKAGE_NAME (msymbol.minsym); |
c906108c SS |
650 | } |
651 | } | |
77e371c0 | 652 | if (symbol == NULL && msymbol.minsym == NULL) |
dfcd3bfb | 653 | return 1; |
c906108c | 654 | |
c906108c SS |
655 | /* If the nearest symbol is too far away, don't print anything symbolic. */ |
656 | ||
657 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
658 | CORE_ADDR. But when we detect unsigned wraparound in the | |
659 | CORE_ADDR math, we ignore this test and print the offset, | |
660 | because addr+max_symbolic_offset has wrapped through the end | |
661 | of the address space back to the beginning, giving bogus comparison. */ | |
662 | if (addr > name_location + max_symbolic_offset | |
663 | && name_location + max_symbolic_offset > name_location) | |
dfcd3bfb | 664 | return 1; |
c906108c | 665 | |
dfcd3bfb JM |
666 | *offset = addr - name_location; |
667 | ||
c7110220 | 668 | *name = name_temp; |
c906108c | 669 | |
c906108c SS |
670 | if (print_symbol_filename) |
671 | { | |
672 | struct symtab_and_line sal; | |
673 | ||
674 | sal = find_pc_sect_line (addr, section, 0); | |
675 | ||
676 | if (sal.symtab) | |
dfcd3bfb | 677 | { |
c7110220 | 678 | *filename = symtab_to_filename_for_display (sal.symtab); |
dfcd3bfb JM |
679 | *line = sal.line; |
680 | } | |
c906108c | 681 | } |
dfcd3bfb | 682 | return 0; |
c906108c SS |
683 | } |
684 | ||
c906108c SS |
685 | |
686 | /* Print address ADDR symbolically on STREAM. | |
687 | First print it as a number. Then perhaps print | |
688 | <SYMBOL + OFFSET> after the number. */ | |
689 | ||
690 | void | |
5af949e3 UW |
691 | print_address (struct gdbarch *gdbarch, |
692 | CORE_ADDR addr, struct ui_file *stream) | |
c906108c | 693 | { |
5af949e3 | 694 | fputs_filtered (paddress (gdbarch, addr), stream); |
22e722e1 | 695 | print_address_symbolic (gdbarch, addr, stream, asm_demangle, " "); |
c906108c SS |
696 | } |
697 | ||
2b28d209 PP |
698 | /* Return a prefix for instruction address: |
699 | "=> " for current instruction, else " ". */ | |
700 | ||
701 | const char * | |
702 | pc_prefix (CORE_ADDR addr) | |
703 | { | |
704 | if (has_stack_frames ()) | |
705 | { | |
706 | struct frame_info *frame; | |
707 | CORE_ADDR pc; | |
708 | ||
709 | frame = get_selected_frame (NULL); | |
ce406537 | 710 | if (get_frame_pc_if_available (frame, &pc) && pc == addr) |
2b28d209 PP |
711 | return "=> "; |
712 | } | |
713 | return " "; | |
714 | } | |
715 | ||
c906108c SS |
716 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE |
717 | controls whether to print the symbolic name "raw" or demangled. | |
9cb709b6 | 718 | Return non-zero if anything was printed; zero otherwise. */ |
c906108c | 719 | |
9cb709b6 | 720 | int |
edf0c1b7 TT |
721 | print_address_demangle (const struct value_print_options *opts, |
722 | struct gdbarch *gdbarch, CORE_ADDR addr, | |
5af949e3 | 723 | struct ui_file *stream, int do_demangle) |
c906108c | 724 | { |
1d51a733 | 725 | if (opts->addressprint) |
c906108c | 726 | { |
5af949e3 | 727 | fputs_filtered (paddress (gdbarch, addr), stream); |
22e722e1 | 728 | print_address_symbolic (gdbarch, addr, stream, do_demangle, " "); |
c906108c SS |
729 | } |
730 | else | |
731 | { | |
9cb709b6 | 732 | return print_address_symbolic (gdbarch, addr, stream, do_demangle, ""); |
c906108c | 733 | } |
9cb709b6 | 734 | return 1; |
c906108c SS |
735 | } |
736 | \f | |
737 | ||
bb556f1f TK |
738 | /* Find the address of the instruction that is INST_COUNT instructions before |
739 | the instruction at ADDR. | |
740 | Since some architectures have variable-length instructions, we can't just | |
741 | simply subtract INST_COUNT * INSN_LEN from ADDR. Instead, we use line | |
742 | number information to locate the nearest known instruction boundary, | |
743 | and disassemble forward from there. If we go out of the symbol range | |
744 | during disassembling, we return the lowest address we've got so far and | |
745 | set the number of instructions read to INST_READ. */ | |
746 | ||
747 | static CORE_ADDR | |
748 | find_instruction_backward (struct gdbarch *gdbarch, CORE_ADDR addr, | |
749 | int inst_count, int *inst_read) | |
750 | { | |
751 | /* The vector PCS is used to store instruction addresses within | |
752 | a pc range. */ | |
753 | CORE_ADDR loop_start, loop_end, p; | |
52d214d3 | 754 | std::vector<CORE_ADDR> pcs; |
bb556f1f | 755 | struct symtab_and_line sal; |
bb556f1f TK |
756 | |
757 | *inst_read = 0; | |
758 | loop_start = loop_end = addr; | |
759 | ||
760 | /* In each iteration of the outer loop, we get a pc range that ends before | |
761 | LOOP_START, then we count and store every instruction address of the range | |
762 | iterated in the loop. | |
763 | If the number of instructions counted reaches INST_COUNT, return the | |
764 | stored address that is located INST_COUNT instructions back from ADDR. | |
765 | If INST_COUNT is not reached, we subtract the number of counted | |
766 | instructions from INST_COUNT, and go to the next iteration. */ | |
767 | do | |
768 | { | |
52d214d3 | 769 | pcs.clear (); |
bb556f1f TK |
770 | sal = find_pc_sect_line (loop_start, NULL, 1); |
771 | if (sal.line <= 0) | |
772 | { | |
773 | /* We reach here when line info is not available. In this case, | |
774 | we print a message and just exit the loop. The return value | |
775 | is calculated after the loop. */ | |
776 | printf_filtered (_("No line number information available " | |
777 | "for address ")); | |
778 | wrap_here (" "); | |
779 | print_address (gdbarch, loop_start - 1, gdb_stdout); | |
780 | printf_filtered ("\n"); | |
781 | break; | |
782 | } | |
783 | ||
784 | loop_end = loop_start; | |
785 | loop_start = sal.pc; | |
786 | ||
787 | /* This loop pushes instruction addresses in the range from | |
788 | LOOP_START to LOOP_END. */ | |
789 | for (p = loop_start; p < loop_end;) | |
790 | { | |
52d214d3 | 791 | pcs.push_back (p); |
bb556f1f TK |
792 | p += gdb_insn_length (gdbarch, p); |
793 | } | |
794 | ||
52d214d3 TT |
795 | inst_count -= pcs.size (); |
796 | *inst_read += pcs.size (); | |
bb556f1f TK |
797 | } |
798 | while (inst_count > 0); | |
799 | ||
800 | /* After the loop, the vector PCS has instruction addresses of the last | |
801 | source line we processed, and INST_COUNT has a negative value. | |
802 | We return the address at the index of -INST_COUNT in the vector for | |
803 | the reason below. | |
804 | Let's assume the following instruction addresses and run 'x/-4i 0x400e'. | |
805 | Line X of File | |
806 | 0x4000 | |
807 | 0x4001 | |
808 | 0x4005 | |
809 | Line Y of File | |
810 | 0x4009 | |
811 | 0x400c | |
812 | => 0x400e | |
813 | 0x4011 | |
814 | find_instruction_backward is called with INST_COUNT = 4 and expected to | |
815 | return 0x4001. When we reach here, INST_COUNT is set to -1 because | |
816 | it was subtracted by 2 (from Line Y) and 3 (from Line X). The value | |
817 | 4001 is located at the index 1 of the last iterated line (= Line X), | |
818 | which is simply calculated by -INST_COUNT. | |
819 | The case when the length of PCS is 0 means that we reached an area for | |
820 | which line info is not available. In such case, we return LOOP_START, | |
821 | which was the lowest instruction address that had line info. */ | |
52d214d3 | 822 | p = pcs.size () > 0 ? pcs[-inst_count] : loop_start; |
bb556f1f TK |
823 | |
824 | /* INST_READ includes all instruction addresses in a pc range. Need to | |
825 | exclude the beginning part up to the address we're returning. That | |
826 | is, exclude {0x4000} in the example above. */ | |
827 | if (inst_count < 0) | |
828 | *inst_read += inst_count; | |
829 | ||
bb556f1f TK |
830 | return p; |
831 | } | |
832 | ||
833 | /* Backward read LEN bytes of target memory from address MEMADDR + LEN, | |
834 | placing the results in GDB's memory from MYADDR + LEN. Returns | |
835 | a count of the bytes actually read. */ | |
836 | ||
837 | static int | |
838 | read_memory_backward (struct gdbarch *gdbarch, | |
839 | CORE_ADDR memaddr, gdb_byte *myaddr, int len) | |
840 | { | |
841 | int errcode; | |
842 | int nread; /* Number of bytes actually read. */ | |
843 | ||
844 | /* First try a complete read. */ | |
845 | errcode = target_read_memory (memaddr, myaddr, len); | |
846 | if (errcode == 0) | |
847 | { | |
848 | /* Got it all. */ | |
849 | nread = len; | |
850 | } | |
851 | else | |
852 | { | |
853 | /* Loop, reading one byte at a time until we get as much as we can. */ | |
854 | memaddr += len; | |
855 | myaddr += len; | |
856 | for (nread = 0; nread < len; ++nread) | |
857 | { | |
858 | errcode = target_read_memory (--memaddr, --myaddr, 1); | |
859 | if (errcode != 0) | |
860 | { | |
861 | /* The read was unsuccessful, so exit the loop. */ | |
862 | printf_filtered (_("Cannot access memory at address %s\n"), | |
863 | paddress (gdbarch, memaddr)); | |
864 | break; | |
865 | } | |
866 | } | |
867 | } | |
868 | return nread; | |
869 | } | |
870 | ||
871 | /* Returns true if X (which is LEN bytes wide) is the number zero. */ | |
872 | ||
873 | static int | |
874 | integer_is_zero (const gdb_byte *x, int len) | |
875 | { | |
876 | int i = 0; | |
877 | ||
878 | while (i < len && x[i] == 0) | |
879 | ++i; | |
880 | return (i == len); | |
881 | } | |
882 | ||
883 | /* Find the start address of a string in which ADDR is included. | |
884 | Basically we search for '\0' and return the next address, | |
885 | but if OPTIONS->PRINT_MAX is smaller than the length of a string, | |
886 | we stop searching and return the address to print characters as many as | |
887 | PRINT_MAX from the string. */ | |
888 | ||
889 | static CORE_ADDR | |
890 | find_string_backward (struct gdbarch *gdbarch, | |
891 | CORE_ADDR addr, int count, int char_size, | |
892 | const struct value_print_options *options, | |
893 | int *strings_counted) | |
894 | { | |
895 | const int chunk_size = 0x20; | |
bb556f1f TK |
896 | int read_error = 0; |
897 | int chars_read = 0; | |
898 | int chars_to_read = chunk_size; | |
899 | int chars_counted = 0; | |
900 | int count_original = count; | |
901 | CORE_ADDR string_start_addr = addr; | |
902 | ||
903 | gdb_assert (char_size == 1 || char_size == 2 || char_size == 4); | |
26fcd5d7 | 904 | gdb::byte_vector buffer (chars_to_read * char_size); |
bb556f1f TK |
905 | while (count > 0 && read_error == 0) |
906 | { | |
907 | int i; | |
908 | ||
909 | addr -= chars_to_read * char_size; | |
26fcd5d7 | 910 | chars_read = read_memory_backward (gdbarch, addr, buffer.data (), |
bb556f1f TK |
911 | chars_to_read * char_size); |
912 | chars_read /= char_size; | |
913 | read_error = (chars_read == chars_to_read) ? 0 : 1; | |
914 | /* Searching for '\0' from the end of buffer in backward direction. */ | |
915 | for (i = 0; i < chars_read && count > 0 ; ++i, ++chars_counted) | |
916 | { | |
917 | int offset = (chars_to_read - i - 1) * char_size; | |
918 | ||
26fcd5d7 | 919 | if (integer_is_zero (&buffer[offset], char_size) |
bb556f1f TK |
920 | || chars_counted == options->print_max) |
921 | { | |
922 | /* Found '\0' or reached print_max. As OFFSET is the offset to | |
923 | '\0', we add CHAR_SIZE to return the start address of | |
924 | a string. */ | |
925 | --count; | |
926 | string_start_addr = addr + offset + char_size; | |
927 | chars_counted = 0; | |
928 | } | |
929 | } | |
930 | } | |
931 | ||
932 | /* Update STRINGS_COUNTED with the actual number of loaded strings. */ | |
933 | *strings_counted = count_original - count; | |
934 | ||
935 | if (read_error != 0) | |
936 | { | |
937 | /* In error case, STRING_START_ADDR is pointing to the string that | |
938 | was last successfully loaded. Rewind the partially loaded string. */ | |
939 | string_start_addr -= chars_counted * char_size; | |
940 | } | |
941 | ||
bb556f1f TK |
942 | return string_start_addr; |
943 | } | |
944 | ||
c906108c SS |
945 | /* Examine data at address ADDR in format FMT. |
946 | Fetch it from memory and print on gdb_stdout. */ | |
947 | ||
948 | static void | |
5d3729b5 | 949 | do_examine (struct format_data fmt, struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 950 | { |
52f0bd74 AC |
951 | char format = 0; |
952 | char size; | |
953 | int count = 1; | |
c906108c | 954 | struct type *val_type = NULL; |
52f0bd74 AC |
955 | int i; |
956 | int maxelts; | |
79a45b7d | 957 | struct value_print_options opts; |
bb556f1f TK |
958 | int need_to_update_next_address = 0; |
959 | CORE_ADDR addr_rewound = 0; | |
c906108c SS |
960 | |
961 | format = fmt.format; | |
962 | size = fmt.size; | |
963 | count = fmt.count; | |
5d3729b5 | 964 | next_gdbarch = gdbarch; |
c906108c | 965 | next_address = addr; |
c906108c | 966 | |
9a22f0d0 PM |
967 | /* Instruction format implies fetch single bytes |
968 | regardless of the specified size. | |
969 | The case of strings is handled in decode_format, only explicit | |
970 | size operator are not changed to 'b'. */ | |
971 | if (format == 'i') | |
c906108c SS |
972 | size = 'b'; |
973 | ||
5d3729b5 UW |
974 | if (size == 'a') |
975 | { | |
976 | /* Pick the appropriate size for an address. */ | |
977 | if (gdbarch_ptr_bit (next_gdbarch) == 64) | |
978 | size = 'g'; | |
979 | else if (gdbarch_ptr_bit (next_gdbarch) == 32) | |
980 | size = 'w'; | |
981 | else if (gdbarch_ptr_bit (next_gdbarch) == 16) | |
982 | size = 'h'; | |
983 | else | |
984 | /* Bad value for gdbarch_ptr_bit. */ | |
985 | internal_error (__FILE__, __LINE__, | |
986 | _("failed internal consistency check")); | |
987 | } | |
988 | ||
989 | if (size == 'b') | |
df4df182 | 990 | val_type = builtin_type (next_gdbarch)->builtin_int8; |
c906108c | 991 | else if (size == 'h') |
df4df182 | 992 | val_type = builtin_type (next_gdbarch)->builtin_int16; |
c906108c | 993 | else if (size == 'w') |
df4df182 | 994 | val_type = builtin_type (next_gdbarch)->builtin_int32; |
c906108c | 995 | else if (size == 'g') |
df4df182 | 996 | val_type = builtin_type (next_gdbarch)->builtin_int64; |
c906108c | 997 | |
9a22f0d0 PM |
998 | if (format == 's') |
999 | { | |
1000 | struct type *char_type = NULL; | |
ad3bbd48 | 1001 | |
9a22f0d0 PM |
1002 | /* Search for "char16_t" or "char32_t" types or fall back to 8-bit char |
1003 | if type is not found. */ | |
1004 | if (size == 'h') | |
1005 | char_type = builtin_type (next_gdbarch)->builtin_char16; | |
1006 | else if (size == 'w') | |
1007 | char_type = builtin_type (next_gdbarch)->builtin_char32; | |
1008 | if (char_type) | |
1009 | val_type = char_type; | |
1010 | else | |
1011 | { | |
1012 | if (size != '\0' && size != 'b') | |
0df8b418 MS |
1013 | warning (_("Unable to display strings with " |
1014 | "size '%c', using 'b' instead."), size); | |
9a22f0d0 PM |
1015 | size = 'b'; |
1016 | val_type = builtin_type (next_gdbarch)->builtin_int8; | |
1017 | } | |
1018 | } | |
1019 | ||
c906108c SS |
1020 | maxelts = 8; |
1021 | if (size == 'w') | |
1022 | maxelts = 4; | |
1023 | if (size == 'g') | |
1024 | maxelts = 2; | |
1025 | if (format == 's' || format == 'i') | |
1026 | maxelts = 1; | |
1027 | ||
79a45b7d TT |
1028 | get_formatted_print_options (&opts, format); |
1029 | ||
bb556f1f TK |
1030 | if (count < 0) |
1031 | { | |
1032 | /* This is the negative repeat count case. | |
1033 | We rewind the address based on the given repeat count and format, | |
1034 | then examine memory from there in forward direction. */ | |
1035 | ||
1036 | count = -count; | |
1037 | if (format == 'i') | |
1038 | { | |
1039 | next_address = find_instruction_backward (gdbarch, addr, count, | |
1040 | &count); | |
1041 | } | |
1042 | else if (format == 's') | |
1043 | { | |
1044 | next_address = find_string_backward (gdbarch, addr, count, | |
1045 | TYPE_LENGTH (val_type), | |
1046 | &opts, &count); | |
1047 | } | |
1048 | else | |
1049 | { | |
1050 | next_address = addr - count * TYPE_LENGTH (val_type); | |
1051 | } | |
1052 | ||
1053 | /* The following call to print_formatted updates next_address in every | |
1054 | iteration. In backward case, we store the start address here | |
1055 | and update next_address with it before exiting the function. */ | |
1056 | addr_rewound = (format == 's' | |
1057 | ? next_address - TYPE_LENGTH (val_type) | |
1058 | : next_address); | |
1059 | need_to_update_next_address = 1; | |
1060 | } | |
1061 | ||
c906108c SS |
1062 | /* Print as many objects as specified in COUNT, at most maxelts per line, |
1063 | with the address of the next one at the start of each line. */ | |
1064 | ||
1065 | while (count > 0) | |
1066 | { | |
1067 | QUIT; | |
2b28d209 PP |
1068 | if (format == 'i') |
1069 | fputs_filtered (pc_prefix (next_address), gdb_stdout); | |
5af949e3 | 1070 | print_address (next_gdbarch, next_address, gdb_stdout); |
c906108c SS |
1071 | printf_filtered (":"); |
1072 | for (i = maxelts; | |
1073 | i > 0 && count > 0; | |
1074 | i--, count--) | |
1075 | { | |
1076 | printf_filtered ("\t"); | |
1077 | /* Note that print_formatted sets next_address for the next | |
1078 | object. */ | |
1079 | last_examine_address = next_address; | |
1080 | ||
c906108c | 1081 | /* The value to be displayed is not fetched greedily. |
5d51a2db MR |
1082 | Instead, to avoid the possibility of a fetched value not |
1083 | being used, its retrieval is delayed until the print code | |
c5aa993b JM |
1084 | uses it. When examining an instruction stream, the |
1085 | disassembler will perform its own memory fetch using just | |
1086 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
1087 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
1088 | is left with the byte sequence from the last complete | |
0df8b418 | 1089 | instruction fetched from memory? */ |
9b558729 TT |
1090 | last_examine_value |
1091 | = release_value (value_at_lazy (val_type, next_address)); | |
c906108c | 1092 | |
9b558729 | 1093 | print_formatted (last_examine_value.get (), size, &opts, gdb_stdout); |
a4642986 MR |
1094 | |
1095 | /* Display any branch delay slots following the final insn. */ | |
1096 | if (format == 'i' && count == 1) | |
1097 | count += branch_delay_insns; | |
c906108c SS |
1098 | } |
1099 | printf_filtered ("\n"); | |
1100 | gdb_flush (gdb_stdout); | |
1101 | } | |
bb556f1f TK |
1102 | |
1103 | if (need_to_update_next_address) | |
1104 | next_address = addr_rewound; | |
c906108c SS |
1105 | } |
1106 | \f | |
1107 | static void | |
8d89f51a | 1108 | validate_format (struct format_data fmt, const char *cmdname) |
c906108c SS |
1109 | { |
1110 | if (fmt.size != 0) | |
8a3fe4f8 | 1111 | error (_("Size letters are meaningless in \"%s\" command."), cmdname); |
c906108c | 1112 | if (fmt.count != 1) |
8a3fe4f8 | 1113 | error (_("Item count other than 1 is meaningless in \"%s\" command."), |
c906108c | 1114 | cmdname); |
ea37ba09 | 1115 | if (fmt.format == 'i') |
8a3fe4f8 | 1116 | error (_("Format letter \"%c\" is meaningless in \"%s\" command."), |
c906108c SS |
1117 | fmt.format, cmdname); |
1118 | } | |
1119 | ||
1c88ceb1 JK |
1120 | /* Parse print command format string into *FMTP and update *EXPP. |
1121 | CMDNAME should name the current command. */ | |
1122 | ||
1123 | void | |
1124 | print_command_parse_format (const char **expp, const char *cmdname, | |
1125 | struct format_data *fmtp) | |
1126 | { | |
1127 | const char *exp = *expp; | |
1128 | ||
1129 | if (exp && *exp == '/') | |
1130 | { | |
1131 | exp++; | |
1132 | *fmtp = decode_format (&exp, last_format, 0); | |
1133 | validate_format (*fmtp, cmdname); | |
1134 | last_format = fmtp->format; | |
1135 | } | |
1136 | else | |
1137 | { | |
1138 | fmtp->count = 1; | |
1139 | fmtp->format = 0; | |
1140 | fmtp->size = 0; | |
1141 | fmtp->raw = 0; | |
1142 | } | |
1143 | ||
1144 | *expp = exp; | |
1145 | } | |
1146 | ||
1147 | /* Print VAL to console according to *FMTP, including recording it to | |
1148 | the history. */ | |
1149 | ||
1150 | void | |
1151 | print_value (struct value *val, const struct format_data *fmtp) | |
1152 | { | |
1153 | struct value_print_options opts; | |
1154 | int histindex = record_latest_value (val); | |
1155 | ||
1156 | annotate_value_history_begin (histindex, value_type (val)); | |
1157 | ||
1158 | printf_filtered ("$%d = ", histindex); | |
1159 | ||
1160 | annotate_value_history_value (); | |
1161 | ||
1162 | get_formatted_print_options (&opts, fmtp->format); | |
1163 | opts.raw = fmtp->raw; | |
1164 | ||
1165 | print_formatted (val, fmtp->size, &opts, gdb_stdout); | |
1166 | printf_filtered ("\n"); | |
1167 | ||
1168 | annotate_value_history_end (); | |
1169 | } | |
1170 | ||
675dcf4f | 1171 | /* Evaluate string EXP as an expression in the current language and |
c5aa993b | 1172 | print the resulting value. EXP may contain a format specifier as the |
675dcf4f | 1173 | first argument ("/x myvar" for example, to print myvar in hex). */ |
c906108c SS |
1174 | |
1175 | static void | |
6f937416 | 1176 | print_command_1 (const char *exp, int voidprint) |
c906108c | 1177 | { |
3d6d86c6 | 1178 | struct value *val; |
c906108c | 1179 | struct format_data fmt; |
c906108c | 1180 | |
1c88ceb1 | 1181 | print_command_parse_format (&exp, "print", &fmt); |
c906108c SS |
1182 | |
1183 | if (exp && *exp) | |
1184 | { | |
4d01a485 PA |
1185 | expression_up expr = parse_expression (exp); |
1186 | val = evaluate_expression (expr.get ()); | |
c906108c SS |
1187 | } |
1188 | else | |
1189 | val = access_value_history (0); | |
1190 | ||
df407dfe AC |
1191 | if (voidprint || (val && value_type (val) && |
1192 | TYPE_CODE (value_type (val)) != TYPE_CODE_VOID)) | |
1c88ceb1 | 1193 | print_value (val, &fmt); |
c906108c SS |
1194 | } |
1195 | ||
c906108c | 1196 | static void |
0b39b52e | 1197 | print_command (const char *exp, int from_tty) |
c906108c | 1198 | { |
e93a8774 | 1199 | print_command_1 (exp, 1); |
c906108c SS |
1200 | } |
1201 | ||
675dcf4f | 1202 | /* Same as print, except it doesn't print void results. */ |
c906108c | 1203 | static void |
0b39b52e | 1204 | call_command (const char *exp, int from_tty) |
c906108c | 1205 | { |
e93a8774 | 1206 | print_command_1 (exp, 0); |
c906108c SS |
1207 | } |
1208 | ||
6f937416 PA |
1209 | /* Implementation of the "output" command. */ |
1210 | ||
6f937416 | 1211 | void |
122b53ea | 1212 | output_command (const char *exp, int from_tty) |
c906108c | 1213 | { |
52f0bd74 | 1214 | char format = 0; |
3d6d86c6 | 1215 | struct value *val; |
c906108c | 1216 | struct format_data fmt; |
79a45b7d | 1217 | struct value_print_options opts; |
c906108c | 1218 | |
777ea8f1 | 1219 | fmt.size = 0; |
a6bac58e | 1220 | fmt.raw = 0; |
777ea8f1 | 1221 | |
c906108c SS |
1222 | if (exp && *exp == '/') |
1223 | { | |
1224 | exp++; | |
1225 | fmt = decode_format (&exp, 0, 0); | |
1226 | validate_format (fmt, "output"); | |
1227 | format = fmt.format; | |
1228 | } | |
1229 | ||
4d01a485 | 1230 | expression_up expr = parse_expression (exp); |
c906108c | 1231 | |
4d01a485 | 1232 | val = evaluate_expression (expr.get ()); |
c906108c | 1233 | |
df407dfe | 1234 | annotate_value_begin (value_type (val)); |
c906108c | 1235 | |
79a45b7d | 1236 | get_formatted_print_options (&opts, format); |
a6bac58e | 1237 | opts.raw = fmt.raw; |
79a45b7d | 1238 | print_formatted (val, fmt.size, &opts, gdb_stdout); |
c906108c SS |
1239 | |
1240 | annotate_value_end (); | |
1241 | ||
2acceee2 JM |
1242 | wrap_here (""); |
1243 | gdb_flush (gdb_stdout); | |
c906108c SS |
1244 | } |
1245 | ||
c906108c | 1246 | static void |
981a3fb3 | 1247 | set_command (const char *exp, int from_tty) |
c906108c | 1248 | { |
4d01a485 | 1249 | expression_up expr = parse_expression (exp); |
ad3bbd48 | 1250 | |
0ece64fd TG |
1251 | if (expr->nelts >= 1) |
1252 | switch (expr->elts[0].opcode) | |
1253 | { | |
1254 | case UNOP_PREINCREMENT: | |
1255 | case UNOP_POSTINCREMENT: | |
1256 | case UNOP_PREDECREMENT: | |
1257 | case UNOP_POSTDECREMENT: | |
1258 | case BINOP_ASSIGN: | |
1259 | case BINOP_ASSIGN_MODIFY: | |
1260 | case BINOP_COMMA: | |
1261 | break; | |
1262 | default: | |
1263 | warning | |
1264 | (_("Expression is not an assignment (and might have no effect)")); | |
1265 | } | |
52b3699b | 1266 | |
4d01a485 | 1267 | evaluate_expression (expr.get ()); |
c906108c SS |
1268 | } |
1269 | ||
c906108c | 1270 | static void |
1d12d88f | 1271 | info_symbol_command (const char *arg, int from_tty) |
c906108c SS |
1272 | { |
1273 | struct minimal_symbol *msymbol; | |
c5aa993b JM |
1274 | struct objfile *objfile; |
1275 | struct obj_section *osect; | |
c5aa993b JM |
1276 | CORE_ADDR addr, sect_addr; |
1277 | int matches = 0; | |
1278 | unsigned int offset; | |
c906108c SS |
1279 | |
1280 | if (!arg) | |
e2e0b3e5 | 1281 | error_no_arg (_("address")); |
c906108c SS |
1282 | |
1283 | addr = parse_and_eval_address (arg); | |
1284 | ALL_OBJSECTIONS (objfile, osect) | |
c5aa993b | 1285 | { |
94277a38 DJ |
1286 | /* Only process each object file once, even if there's a separate |
1287 | debug file. */ | |
1288 | if (objfile->separate_debug_objfile_backlink) | |
1289 | continue; | |
1290 | ||
714835d5 | 1291 | sect_addr = overlay_mapped_address (addr, osect); |
c906108c | 1292 | |
f1f6aadf PA |
1293 | if (obj_section_addr (osect) <= sect_addr |
1294 | && sect_addr < obj_section_endaddr (osect) | |
7cbd4a93 TT |
1295 | && (msymbol |
1296 | = lookup_minimal_symbol_by_pc_section (sect_addr, osect).minsym)) | |
c5aa993b | 1297 | { |
c14c28ba | 1298 | const char *obj_name, *mapped, *sec_name, *msym_name; |
5178ed48 | 1299 | const char *loc_string; |
c14c28ba | 1300 | |
c5aa993b | 1301 | matches = 1; |
77e371c0 | 1302 | offset = sect_addr - MSYMBOL_VALUE_ADDRESS (objfile, msymbol); |
c14c28ba PP |
1303 | mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped"); |
1304 | sec_name = osect->the_bfd_section->name; | |
efd66ac6 | 1305 | msym_name = MSYMBOL_PRINT_NAME (msymbol); |
c14c28ba | 1306 | |
e2fd701e DE |
1307 | /* Don't print the offset if it is zero. |
1308 | We assume there's no need to handle i18n of "sym + offset". */ | |
5178ed48 | 1309 | std::string string_holder; |
e2fd701e | 1310 | if (offset) |
5178ed48 TT |
1311 | { |
1312 | string_holder = string_printf ("%s + %u", msym_name, offset); | |
1313 | loc_string = string_holder.c_str (); | |
1314 | } | |
e2fd701e | 1315 | else |
5178ed48 | 1316 | loc_string = msym_name; |
e2fd701e | 1317 | |
4262abfb JK |
1318 | gdb_assert (osect->objfile && objfile_name (osect->objfile)); |
1319 | obj_name = objfile_name (osect->objfile); | |
c14c28ba PP |
1320 | |
1321 | if (MULTI_OBJFILE_P ()) | |
1322 | if (pc_in_unmapped_range (addr, osect)) | |
1323 | if (section_is_overlay (osect)) | |
e2fd701e | 1324 | printf_filtered (_("%s in load address range of " |
c14c28ba | 1325 | "%s overlay section %s of %s\n"), |
e2fd701e | 1326 | loc_string, mapped, sec_name, obj_name); |
c14c28ba | 1327 | else |
e2fd701e | 1328 | printf_filtered (_("%s in load address range of " |
c14c28ba | 1329 | "section %s of %s\n"), |
e2fd701e | 1330 | loc_string, sec_name, obj_name); |
c14c28ba PP |
1331 | else |
1332 | if (section_is_overlay (osect)) | |
e2fd701e DE |
1333 | printf_filtered (_("%s in %s overlay section %s of %s\n"), |
1334 | loc_string, mapped, sec_name, obj_name); | |
c14c28ba | 1335 | else |
e2fd701e DE |
1336 | printf_filtered (_("%s in section %s of %s\n"), |
1337 | loc_string, sec_name, obj_name); | |
c5aa993b | 1338 | else |
c14c28ba PP |
1339 | if (pc_in_unmapped_range (addr, osect)) |
1340 | if (section_is_overlay (osect)) | |
e2fd701e | 1341 | printf_filtered (_("%s in load address range of %s overlay " |
c14c28ba | 1342 | "section %s\n"), |
e2fd701e | 1343 | loc_string, mapped, sec_name); |
c14c28ba | 1344 | else |
e2fd701e DE |
1345 | printf_filtered (_("%s in load address range of section %s\n"), |
1346 | loc_string, sec_name); | |
c14c28ba PP |
1347 | else |
1348 | if (section_is_overlay (osect)) | |
e2fd701e DE |
1349 | printf_filtered (_("%s in %s overlay section %s\n"), |
1350 | loc_string, mapped, sec_name); | |
c14c28ba | 1351 | else |
e2fd701e DE |
1352 | printf_filtered (_("%s in section %s\n"), |
1353 | loc_string, sec_name); | |
c5aa993b JM |
1354 | } |
1355 | } | |
c906108c | 1356 | if (matches == 0) |
a3f17187 | 1357 | printf_filtered (_("No symbol matches %s.\n"), arg); |
c906108c SS |
1358 | } |
1359 | ||
c906108c | 1360 | static void |
1d12d88f | 1361 | info_address_command (const char *exp, int from_tty) |
c906108c | 1362 | { |
768a979c UW |
1363 | struct gdbarch *gdbarch; |
1364 | int regno; | |
52f0bd74 | 1365 | struct symbol *sym; |
7c7b6655 | 1366 | struct bound_minimal_symbol msymbol; |
52f0bd74 | 1367 | long val; |
714835d5 | 1368 | struct obj_section *section; |
08922a10 | 1369 | CORE_ADDR load_addr, context_pc = 0; |
1993b719 | 1370 | struct field_of_this_result is_a_field_of_this; |
c906108c SS |
1371 | |
1372 | if (exp == 0) | |
8a3fe4f8 | 1373 | error (_("Argument required.")); |
c906108c | 1374 | |
08922a10 | 1375 | sym = lookup_symbol (exp, get_selected_block (&context_pc), VAR_DOMAIN, |
d12307c1 | 1376 | &is_a_field_of_this).symbol; |
c906108c SS |
1377 | if (sym == NULL) |
1378 | { | |
1993b719 | 1379 | if (is_a_field_of_this.type != NULL) |
c906108c SS |
1380 | { |
1381 | printf_filtered ("Symbol \""); | |
1382 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1383 | current_language->la_language, DMGL_ANSI); | |
e2b23ee9 AF |
1384 | printf_filtered ("\" is a field of the local class variable "); |
1385 | if (current_language->la_language == language_objc) | |
2625d86c | 1386 | printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */ |
e2b23ee9 | 1387 | else |
2625d86c | 1388 | printf_filtered ("`this'\n"); |
c906108c SS |
1389 | return; |
1390 | } | |
1391 | ||
7c7b6655 | 1392 | msymbol = lookup_bound_minimal_symbol (exp); |
c906108c | 1393 | |
7c7b6655 | 1394 | if (msymbol.minsym != NULL) |
c906108c | 1395 | { |
7c7b6655 | 1396 | struct objfile *objfile = msymbol.objfile; |
e27d198c TT |
1397 | |
1398 | gdbarch = get_objfile_arch (objfile); | |
77e371c0 | 1399 | load_addr = BMSYMBOL_VALUE_ADDRESS (msymbol); |
c906108c SS |
1400 | |
1401 | printf_filtered ("Symbol \""); | |
1402 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1403 | current_language->la_language, DMGL_ANSI); | |
1404 | printf_filtered ("\" is at "); | |
5af949e3 | 1405 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
c906108c | 1406 | printf_filtered (" in a file compiled without debugging"); |
efd66ac6 | 1407 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
c906108c SS |
1408 | if (section_is_overlay (section)) |
1409 | { | |
1410 | load_addr = overlay_unmapped_address (load_addr, section); | |
1411 | printf_filtered (",\n -- loaded at "); | |
5af949e3 | 1412 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1413 | printf_filtered (" in overlay section %s", |
1414 | section->the_bfd_section->name); | |
c906108c SS |
1415 | } |
1416 | printf_filtered (".\n"); | |
1417 | } | |
1418 | else | |
8a3fe4f8 | 1419 | error (_("No symbol \"%s\" in current context."), exp); |
c906108c SS |
1420 | return; |
1421 | } | |
1422 | ||
1423 | printf_filtered ("Symbol \""); | |
3567439c | 1424 | fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym), |
c906108c SS |
1425 | current_language->la_language, DMGL_ANSI); |
1426 | printf_filtered ("\" is "); | |
c5aa993b | 1427 | val = SYMBOL_VALUE (sym); |
1994afbf DE |
1428 | if (SYMBOL_OBJFILE_OWNED (sym)) |
1429 | section = SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym); | |
1430 | else | |
1431 | section = NULL; | |
08be3fe3 | 1432 | gdbarch = symbol_arch (sym); |
c906108c | 1433 | |
24d6c2a0 TT |
1434 | if (SYMBOL_COMPUTED_OPS (sym) != NULL) |
1435 | { | |
1436 | SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, context_pc, | |
1437 | gdb_stdout); | |
1438 | printf_filtered (".\n"); | |
1439 | return; | |
1440 | } | |
1441 | ||
c906108c SS |
1442 | switch (SYMBOL_CLASS (sym)) |
1443 | { | |
1444 | case LOC_CONST: | |
1445 | case LOC_CONST_BYTES: | |
1446 | printf_filtered ("constant"); | |
1447 | break; | |
1448 | ||
1449 | case LOC_LABEL: | |
1450 | printf_filtered ("a label at address "); | |
5af949e3 UW |
1451 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
1452 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); | |
c906108c SS |
1453 | if (section_is_overlay (section)) |
1454 | { | |
1455 | load_addr = overlay_unmapped_address (load_addr, section); | |
1456 | printf_filtered (",\n -- loaded at "); | |
5af949e3 | 1457 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1458 | printf_filtered (" in overlay section %s", |
1459 | section->the_bfd_section->name); | |
c906108c SS |
1460 | } |
1461 | break; | |
1462 | ||
4c2df51b | 1463 | case LOC_COMPUTED: |
24d6c2a0 | 1464 | gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method")); |
4c2df51b | 1465 | |
c906108c | 1466 | case LOC_REGISTER: |
768a979c UW |
1467 | /* GDBARCH is the architecture associated with the objfile the symbol |
1468 | is defined in; the target architecture may be different, and may | |
1469 | provide additional registers. However, we do not know the target | |
1470 | architecture at this point. We assume the objfile architecture | |
1471 | will contain all the standard registers that occur in debug info | |
1472 | in that objfile. */ | |
1473 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
1474 | ||
2a2d4dc3 AS |
1475 | if (SYMBOL_IS_ARGUMENT (sym)) |
1476 | printf_filtered (_("an argument in register %s"), | |
768a979c | 1477 | gdbarch_register_name (gdbarch, regno)); |
2a2d4dc3 AS |
1478 | else |
1479 | printf_filtered (_("a variable in register %s"), | |
768a979c | 1480 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1481 | break; |
1482 | ||
1483 | case LOC_STATIC: | |
a3f17187 | 1484 | printf_filtered (_("static storage at address ")); |
5af949e3 UW |
1485 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
1486 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); | |
c906108c SS |
1487 | if (section_is_overlay (section)) |
1488 | { | |
1489 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1490 | printf_filtered (_(",\n -- loaded at ")); |
5af949e3 | 1491 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1492 | printf_filtered (_(" in overlay section %s"), |
1493 | section->the_bfd_section->name); | |
c906108c SS |
1494 | } |
1495 | break; | |
1496 | ||
c906108c | 1497 | case LOC_REGPARM_ADDR: |
768a979c UW |
1498 | /* Note comment at LOC_REGISTER. */ |
1499 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
675dcf4f | 1500 | printf_filtered (_("address of an argument in register %s"), |
768a979c | 1501 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1502 | break; |
1503 | ||
1504 | case LOC_ARG: | |
a3f17187 | 1505 | printf_filtered (_("an argument at offset %ld"), val); |
c906108c SS |
1506 | break; |
1507 | ||
c906108c | 1508 | case LOC_LOCAL: |
a3f17187 | 1509 | printf_filtered (_("a local variable at frame offset %ld"), val); |
c906108c SS |
1510 | break; |
1511 | ||
1512 | case LOC_REF_ARG: | |
a3f17187 | 1513 | printf_filtered (_("a reference argument at offset %ld"), val); |
c906108c SS |
1514 | break; |
1515 | ||
c906108c | 1516 | case LOC_TYPEDEF: |
a3f17187 | 1517 | printf_filtered (_("a typedef")); |
c906108c SS |
1518 | break; |
1519 | ||
1520 | case LOC_BLOCK: | |
a3f17187 | 1521 | printf_filtered (_("a function at address ")); |
2b1ffcfd | 1522 | load_addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
5af949e3 | 1523 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
c906108c SS |
1524 | if (section_is_overlay (section)) |
1525 | { | |
1526 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1527 | printf_filtered (_(",\n -- loaded at ")); |
5af949e3 | 1528 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1529 | printf_filtered (_(" in overlay section %s"), |
1530 | section->the_bfd_section->name); | |
c906108c SS |
1531 | } |
1532 | break; | |
1533 | ||
1534 | case LOC_UNRESOLVED: | |
1535 | { | |
e27d198c | 1536 | struct bound_minimal_symbol msym; |
c906108c | 1537 | |
64cc34d8 | 1538 | msym = lookup_bound_minimal_symbol (SYMBOL_LINKAGE_NAME (sym)); |
e27d198c | 1539 | if (msym.minsym == NULL) |
c906108c SS |
1540 | printf_filtered ("unresolved"); |
1541 | else | |
1542 | { | |
efd66ac6 | 1543 | section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
e0740f77 JK |
1544 | |
1545 | if (section | |
1546 | && (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0) | |
5382cfab PW |
1547 | { |
1548 | load_addr = MSYMBOL_VALUE_RAW_ADDRESS (msym.minsym); | |
1549 | printf_filtered (_("a thread-local variable at offset %s " | |
1550 | "in the thread-local storage for `%s'"), | |
1551 | paddress (gdbarch, load_addr), | |
1552 | objfile_name (section->objfile)); | |
1553 | } | |
e0740f77 | 1554 | else |
c906108c | 1555 | { |
5382cfab | 1556 | load_addr = BMSYMBOL_VALUE_ADDRESS (msym); |
e0740f77 | 1557 | printf_filtered (_("static storage at address ")); |
5af949e3 | 1558 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
e0740f77 JK |
1559 | if (section_is_overlay (section)) |
1560 | { | |
1561 | load_addr = overlay_unmapped_address (load_addr, section); | |
1562 | printf_filtered (_(",\n -- loaded at ")); | |
5af949e3 | 1563 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
e0740f77 JK |
1564 | printf_filtered (_(" in overlay section %s"), |
1565 | section->the_bfd_section->name); | |
1566 | } | |
c906108c SS |
1567 | } |
1568 | } | |
1569 | } | |
1570 | break; | |
1571 | ||
c906108c | 1572 | case LOC_OPTIMIZED_OUT: |
a3f17187 | 1573 | printf_filtered (_("optimized out")); |
c906108c | 1574 | break; |
c5aa993b | 1575 | |
c906108c | 1576 | default: |
a3f17187 | 1577 | printf_filtered (_("of unknown (botched) type")); |
c906108c SS |
1578 | break; |
1579 | } | |
1580 | printf_filtered (".\n"); | |
1581 | } | |
1582 | \f | |
675dcf4f MK |
1583 | |
1584 | static void | |
0b39b52e | 1585 | x_command (const char *exp, int from_tty) |
c906108c | 1586 | { |
c906108c | 1587 | struct format_data fmt; |
c906108c SS |
1588 | struct value *val; |
1589 | ||
a6bac58e | 1590 | fmt.format = last_format ? last_format : 'x'; |
c906108c SS |
1591 | fmt.size = last_size; |
1592 | fmt.count = 1; | |
a6bac58e | 1593 | fmt.raw = 0; |
c906108c | 1594 | |
9be2ae8f TT |
1595 | /* If there is no expression and no format, use the most recent |
1596 | count. */ | |
1597 | if (exp == nullptr && last_count > 0) | |
1598 | fmt.count = last_count; | |
1599 | ||
c906108c SS |
1600 | if (exp && *exp == '/') |
1601 | { | |
6f937416 PA |
1602 | const char *tmp = exp + 1; |
1603 | ||
1604 | fmt = decode_format (&tmp, last_format, last_size); | |
1605 | exp = (char *) tmp; | |
c906108c SS |
1606 | } |
1607 | ||
9be2ae8f TT |
1608 | last_count = fmt.count; |
1609 | ||
c906108c SS |
1610 | /* If we have an expression, evaluate it and use it as the address. */ |
1611 | ||
1612 | if (exp != 0 && *exp != 0) | |
1613 | { | |
4d01a485 | 1614 | expression_up expr = parse_expression (exp); |
675dcf4f MK |
1615 | /* Cause expression not to be there any more if this command is |
1616 | repeated with Newline. But don't clobber a user-defined | |
1617 | command's definition. */ | |
c906108c | 1618 | if (from_tty) |
85c4be7c | 1619 | set_repeat_arguments (""); |
4d01a485 | 1620 | val = evaluate_expression (expr.get ()); |
aa006118 | 1621 | if (TYPE_IS_REFERENCE (value_type (val))) |
e1c34c5d | 1622 | val = coerce_ref (val); |
c906108c | 1623 | /* In rvalue contexts, such as this, functions are coerced into |
c5aa993b | 1624 | pointers to functions. This makes "x/i main" work. */ |
c0d8fd9a | 1625 | if (/* last_format == 'i' && */ |
df407dfe | 1626 | TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC |
c5aa993b | 1627 | && VALUE_LVAL (val) == lval_memory) |
42ae5230 | 1628 | next_address = value_address (val); |
c906108c | 1629 | else |
1aa20aa8 | 1630 | next_address = value_as_address (val); |
5d3729b5 UW |
1631 | |
1632 | next_gdbarch = expr->gdbarch; | |
c906108c SS |
1633 | } |
1634 | ||
5d3729b5 UW |
1635 | if (!next_gdbarch) |
1636 | error_no_arg (_("starting display address")); | |
1637 | ||
1638 | do_examine (fmt, next_gdbarch, next_address); | |
c906108c | 1639 | |
675dcf4f | 1640 | /* If the examine succeeds, we remember its size and format for next |
9a22f0d0 PM |
1641 | time. Set last_size to 'b' for strings. */ |
1642 | if (fmt.format == 's') | |
1643 | last_size = 'b'; | |
1644 | else | |
1645 | last_size = fmt.size; | |
c906108c SS |
1646 | last_format = fmt.format; |
1647 | ||
0df8b418 | 1648 | /* Set a couple of internal variables if appropriate. */ |
9b558729 | 1649 | if (last_examine_value != nullptr) |
c906108c SS |
1650 | { |
1651 | /* Make last address examined available to the user as $_. Use | |
c5aa993b | 1652 | the correct pointer type. */ |
4478b372 | 1653 | struct type *pointer_type |
9b558729 | 1654 | = lookup_pointer_type (value_type (last_examine_value.get ())); |
c906108c | 1655 | set_internalvar (lookup_internalvar ("_"), |
4478b372 JB |
1656 | value_from_pointer (pointer_type, |
1657 | last_examine_address)); | |
c5aa993b | 1658 | |
675dcf4f MK |
1659 | /* Make contents of last address examined available to the user |
1660 | as $__. If the last value has not been fetched from memory | |
1661 | then don't fetch it now; instead mark it by voiding the $__ | |
1662 | variable. */ | |
9b558729 | 1663 | if (value_lazy (last_examine_value.get ())) |
4fa62494 | 1664 | clear_internalvar (lookup_internalvar ("__")); |
c906108c | 1665 | else |
9b558729 | 1666 | set_internalvar (lookup_internalvar ("__"), last_examine_value.get ()); |
c906108c SS |
1667 | } |
1668 | } | |
c906108c | 1669 | \f |
c5aa993b | 1670 | |
c906108c SS |
1671 | /* Add an expression to the auto-display chain. |
1672 | Specify the expression. */ | |
1673 | ||
1674 | static void | |
0b39b52e | 1675 | display_command (const char *arg, int from_tty) |
c906108c SS |
1676 | { |
1677 | struct format_data fmt; | |
fe978cb0 | 1678 | struct display *newobj; |
6f937416 | 1679 | const char *exp = arg; |
c906108c | 1680 | |
7bd0be3a | 1681 | if (exp == 0) |
c906108c | 1682 | { |
7bd0be3a AB |
1683 | do_displays (); |
1684 | return; | |
1685 | } | |
c906108c | 1686 | |
7bd0be3a AB |
1687 | if (*exp == '/') |
1688 | { | |
1689 | exp++; | |
1690 | fmt = decode_format (&exp, 0, 0); | |
1691 | if (fmt.size && fmt.format == 0) | |
1692 | fmt.format = 'x'; | |
1693 | if (fmt.format == 'i' || fmt.format == 's') | |
1694 | fmt.size = 'b'; | |
1695 | } | |
1696 | else | |
1697 | { | |
1698 | fmt.format = 0; | |
1699 | fmt.size = 0; | |
1700 | fmt.count = 0; | |
1701 | fmt.raw = 0; | |
1702 | } | |
c906108c | 1703 | |
aee1fcdf | 1704 | innermost_block.reset (); |
4d01a485 | 1705 | expression_up expr = parse_expression (exp); |
c906108c | 1706 | |
4d01a485 | 1707 | newobj = new display (); |
c906108c | 1708 | |
7bd0be3a | 1709 | newobj->exp_string = xstrdup (exp); |
b22e99fd | 1710 | newobj->exp = std::move (expr); |
aee1fcdf | 1711 | newobj->block = innermost_block.block (); |
7bd0be3a | 1712 | newobj->pspace = current_program_space; |
7bd0be3a AB |
1713 | newobj->number = ++display_number; |
1714 | newobj->format = fmt; | |
1715 | newobj->enabled_p = 1; | |
62147a22 PA |
1716 | newobj->next = NULL; |
1717 | ||
1718 | if (display_chain == NULL) | |
1719 | display_chain = newobj; | |
1720 | else | |
1721 | { | |
1722 | struct display *last; | |
1723 | ||
1724 | for (last = display_chain; last->next != NULL; last = last->next) | |
1725 | ; | |
1726 | last->next = newobj; | |
1727 | } | |
c906108c | 1728 | |
7bd0be3a AB |
1729 | if (from_tty) |
1730 | do_one_display (newobj); | |
c906108c | 1731 | |
7bd0be3a | 1732 | dont_repeat (); |
c906108c SS |
1733 | } |
1734 | ||
1735 | static void | |
fba45db2 | 1736 | free_display (struct display *d) |
c906108c | 1737 | { |
fa8a61dc | 1738 | xfree (d->exp_string); |
4d01a485 | 1739 | delete d; |
c906108c SS |
1740 | } |
1741 | ||
675dcf4f MK |
1742 | /* Clear out the display_chain. Done when new symtabs are loaded, |
1743 | since this invalidates the types stored in many expressions. */ | |
c906108c SS |
1744 | |
1745 | void | |
fba45db2 | 1746 | clear_displays (void) |
c906108c | 1747 | { |
52f0bd74 | 1748 | struct display *d; |
c906108c SS |
1749 | |
1750 | while ((d = display_chain) != NULL) | |
1751 | { | |
c906108c | 1752 | display_chain = d->next; |
fa8a61dc | 1753 | free_display (d); |
c906108c SS |
1754 | } |
1755 | } | |
1756 | ||
3c3fe74c | 1757 | /* Delete the auto-display DISPLAY. */ |
c906108c SS |
1758 | |
1759 | static void | |
3c3fe74c | 1760 | delete_display (struct display *display) |
c906108c | 1761 | { |
3c3fe74c | 1762 | struct display *d; |
c906108c | 1763 | |
3c3fe74c | 1764 | gdb_assert (display != NULL); |
c906108c | 1765 | |
3c3fe74c PA |
1766 | if (display_chain == display) |
1767 | display_chain = display->next; | |
1768 | ||
1769 | ALL_DISPLAYS (d) | |
1770 | if (d->next == display) | |
c906108c | 1771 | { |
3c3fe74c PA |
1772 | d->next = display->next; |
1773 | break; | |
c906108c | 1774 | } |
3c3fe74c PA |
1775 | |
1776 | free_display (display); | |
c906108c SS |
1777 | } |
1778 | ||
c9174737 PA |
1779 | /* Call FUNCTION on each of the displays whose numbers are given in |
1780 | ARGS. DATA is passed unmodified to FUNCTION. */ | |
c906108c SS |
1781 | |
1782 | static void | |
77763700 | 1783 | map_display_numbers (const char *args, |
c9174737 PA |
1784 | void (*function) (struct display *, |
1785 | void *), | |
1786 | void *data) | |
c906108c | 1787 | { |
c9174737 | 1788 | int num; |
c906108c | 1789 | |
c9174737 PA |
1790 | if (args == NULL) |
1791 | error_no_arg (_("one or more display numbers")); | |
c906108c | 1792 | |
bfd28288 | 1793 | number_or_range_parser parser (args); |
c9174737 | 1794 | |
bfd28288 | 1795 | while (!parser.finished ()) |
c906108c | 1796 | { |
bfd28288 | 1797 | const char *p = parser.cur_tok (); |
c906108c | 1798 | |
bfd28288 | 1799 | num = parser.get_number (); |
3c3fe74c PA |
1800 | if (num == 0) |
1801 | warning (_("bad display number at or near '%s'"), p); | |
1802 | else | |
1803 | { | |
c9174737 | 1804 | struct display *d, *tmp; |
c906108c | 1805 | |
c9174737 | 1806 | ALL_DISPLAYS_SAFE (d, tmp) |
3c3fe74c PA |
1807 | if (d->number == num) |
1808 | break; | |
1809 | if (d == NULL) | |
1810 | printf_unfiltered (_("No display number %d.\n"), num); | |
1811 | else | |
c9174737 | 1812 | function (d, data); |
3c3fe74c | 1813 | } |
c906108c | 1814 | } |
c9174737 PA |
1815 | } |
1816 | ||
1817 | /* Callback for map_display_numbers, that deletes a display. */ | |
1818 | ||
1819 | static void | |
1820 | do_delete_display (struct display *d, void *data) | |
1821 | { | |
1822 | delete_display (d); | |
1823 | } | |
1824 | ||
1825 | /* "undisplay" command. */ | |
1826 | ||
1827 | static void | |
77763700 | 1828 | undisplay_command (const char *args, int from_tty) |
c9174737 | 1829 | { |
c9174737 PA |
1830 | if (args == NULL) |
1831 | { | |
1832 | if (query (_("Delete all auto-display expressions? "))) | |
1833 | clear_displays (); | |
1834 | dont_repeat (); | |
1835 | return; | |
1836 | } | |
1837 | ||
1838 | map_display_numbers (args, do_delete_display, NULL); | |
c906108c SS |
1839 | dont_repeat (); |
1840 | } | |
1841 | ||
1842 | /* Display a single auto-display. | |
1843 | Do nothing if the display cannot be printed in the current context, | |
0df8b418 | 1844 | or if the display is disabled. */ |
c906108c SS |
1845 | |
1846 | static void | |
fba45db2 | 1847 | do_one_display (struct display *d) |
c906108c SS |
1848 | { |
1849 | int within_current_scope; | |
1850 | ||
b5de0fa7 | 1851 | if (d->enabled_p == 0) |
c906108c SS |
1852 | return; |
1853 | ||
704e9165 UW |
1854 | /* The expression carries the architecture that was used at parse time. |
1855 | This is a problem if the expression depends on architecture features | |
1856 | (e.g. register numbers), and the current architecture is now different. | |
1857 | For example, a display statement like "display/i $pc" is expected to | |
1858 | display the PC register of the current architecture, not the arch at | |
1859 | the time the display command was given. Therefore, we re-parse the | |
1860 | expression if the current architecture has changed. */ | |
1861 | if (d->exp != NULL && d->exp->gdbarch != get_current_arch ()) | |
1862 | { | |
4d01a485 | 1863 | d->exp.reset (); |
704e9165 UW |
1864 | d->block = NULL; |
1865 | } | |
1866 | ||
a3247a22 PP |
1867 | if (d->exp == NULL) |
1868 | { | |
ad3bbd48 | 1869 | |
492d29ea | 1870 | TRY |
a3247a22 | 1871 | { |
aee1fcdf | 1872 | innermost_block.reset (); |
a3247a22 | 1873 | d->exp = parse_expression (d->exp_string); |
aee1fcdf | 1874 | d->block = innermost_block.block (); |
a3247a22 | 1875 | } |
492d29ea | 1876 | CATCH (ex, RETURN_MASK_ALL) |
a3247a22 PP |
1877 | { |
1878 | /* Can't re-parse the expression. Disable this display item. */ | |
1879 | d->enabled_p = 0; | |
1880 | warning (_("Unable to display \"%s\": %s"), | |
1881 | d->exp_string, ex.message); | |
1882 | return; | |
1883 | } | |
492d29ea | 1884 | END_CATCH |
a3247a22 PP |
1885 | } |
1886 | ||
c906108c | 1887 | if (d->block) |
6c95b8df PA |
1888 | { |
1889 | if (d->pspace == current_program_space) | |
1890 | within_current_scope = contained_in (get_selected_block (0), d->block); | |
1891 | else | |
1892 | within_current_scope = 0; | |
1893 | } | |
c906108c SS |
1894 | else |
1895 | within_current_scope = 1; | |
1896 | if (!within_current_scope) | |
1897 | return; | |
1898 | ||
b7b633e9 TT |
1899 | scoped_restore save_display_number |
1900 | = make_scoped_restore (¤t_display_number, d->number); | |
c906108c SS |
1901 | |
1902 | annotate_display_begin (); | |
1903 | printf_filtered ("%d", d->number); | |
1904 | annotate_display_number_end (); | |
1905 | printf_filtered (": "); | |
1906 | if (d->format.size) | |
1907 | { | |
c906108c SS |
1908 | |
1909 | annotate_display_format (); | |
1910 | ||
1911 | printf_filtered ("x/"); | |
1912 | if (d->format.count != 1) | |
1913 | printf_filtered ("%d", d->format.count); | |
1914 | printf_filtered ("%c", d->format.format); | |
1915 | if (d->format.format != 'i' && d->format.format != 's') | |
1916 | printf_filtered ("%c", d->format.size); | |
1917 | printf_filtered (" "); | |
1918 | ||
1919 | annotate_display_expression (); | |
1920 | ||
fa8a61dc | 1921 | puts_filtered (d->exp_string); |
c906108c SS |
1922 | annotate_display_expression_end (); |
1923 | ||
6a2eb474 | 1924 | if (d->format.count != 1 || d->format.format == 'i') |
c906108c SS |
1925 | printf_filtered ("\n"); |
1926 | else | |
1927 | printf_filtered (" "); | |
c5aa993b | 1928 | |
c906108c SS |
1929 | annotate_display_value (); |
1930 | ||
492d29ea | 1931 | TRY |
9d8fa392 PA |
1932 | { |
1933 | struct value *val; | |
1934 | CORE_ADDR addr; | |
1935 | ||
4d01a485 | 1936 | val = evaluate_expression (d->exp.get ()); |
9d8fa392 PA |
1937 | addr = value_as_address (val); |
1938 | if (d->format.format == 'i') | |
1939 | addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr); | |
1940 | do_examine (d->format, d->exp->gdbarch, addr); | |
1941 | } | |
492d29ea PA |
1942 | CATCH (ex, RETURN_MASK_ERROR) |
1943 | { | |
1944 | fprintf_filtered (gdb_stdout, _("<error: %s>\n"), ex.message); | |
1945 | } | |
1946 | END_CATCH | |
c906108c SS |
1947 | } |
1948 | else | |
1949 | { | |
79a45b7d TT |
1950 | struct value_print_options opts; |
1951 | ||
c906108c SS |
1952 | annotate_display_format (); |
1953 | ||
1954 | if (d->format.format) | |
1955 | printf_filtered ("/%c ", d->format.format); | |
1956 | ||
1957 | annotate_display_expression (); | |
1958 | ||
fa8a61dc | 1959 | puts_filtered (d->exp_string); |
c906108c SS |
1960 | annotate_display_expression_end (); |
1961 | ||
1962 | printf_filtered (" = "); | |
1963 | ||
1964 | annotate_display_expression (); | |
1965 | ||
79a45b7d | 1966 | get_formatted_print_options (&opts, d->format.format); |
a6bac58e | 1967 | opts.raw = d->format.raw; |
9d8fa392 | 1968 | |
492d29ea | 1969 | TRY |
9d8fa392 PA |
1970 | { |
1971 | struct value *val; | |
1972 | ||
4d01a485 | 1973 | val = evaluate_expression (d->exp.get ()); |
9d8fa392 PA |
1974 | print_formatted (val, d->format.size, &opts, gdb_stdout); |
1975 | } | |
492d29ea PA |
1976 | CATCH (ex, RETURN_MASK_ERROR) |
1977 | { | |
1978 | fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.message); | |
1979 | } | |
1980 | END_CATCH | |
1981 | ||
c906108c SS |
1982 | printf_filtered ("\n"); |
1983 | } | |
1984 | ||
1985 | annotate_display_end (); | |
1986 | ||
1987 | gdb_flush (gdb_stdout); | |
c906108c SS |
1988 | } |
1989 | ||
1990 | /* Display all of the values on the auto-display chain which can be | |
1991 | evaluated in the current scope. */ | |
1992 | ||
1993 | void | |
fba45db2 | 1994 | do_displays (void) |
c906108c | 1995 | { |
52f0bd74 | 1996 | struct display *d; |
c906108c SS |
1997 | |
1998 | for (d = display_chain; d; d = d->next) | |
1999 | do_one_display (d); | |
2000 | } | |
2001 | ||
2002 | /* Delete the auto-display which we were in the process of displaying. | |
2003 | This is done when there is an error or a signal. */ | |
2004 | ||
2005 | void | |
fba45db2 | 2006 | disable_display (int num) |
c906108c | 2007 | { |
52f0bd74 | 2008 | struct display *d; |
c906108c SS |
2009 | |
2010 | for (d = display_chain; d; d = d->next) | |
2011 | if (d->number == num) | |
2012 | { | |
b5de0fa7 | 2013 | d->enabled_p = 0; |
c906108c SS |
2014 | return; |
2015 | } | |
a3f17187 | 2016 | printf_unfiltered (_("No display number %d.\n"), num); |
c906108c | 2017 | } |
c5aa993b | 2018 | |
c906108c | 2019 | void |
fba45db2 | 2020 | disable_current_display (void) |
c906108c SS |
2021 | { |
2022 | if (current_display_number >= 0) | |
2023 | { | |
2024 | disable_display (current_display_number); | |
3e43a32a MS |
2025 | fprintf_unfiltered (gdb_stderr, |
2026 | _("Disabling display %d to " | |
2027 | "avoid infinite recursion.\n"), | |
c5aa993b | 2028 | current_display_number); |
c906108c SS |
2029 | } |
2030 | current_display_number = -1; | |
2031 | } | |
2032 | ||
2033 | static void | |
1d12d88f | 2034 | info_display_command (const char *ignore, int from_tty) |
c906108c | 2035 | { |
52f0bd74 | 2036 | struct display *d; |
c906108c SS |
2037 | |
2038 | if (!display_chain) | |
a3f17187 | 2039 | printf_unfiltered (_("There are no auto-display expressions now.\n")); |
c906108c | 2040 | else |
a3f17187 AC |
2041 | printf_filtered (_("Auto-display expressions now in effect:\n\ |
2042 | Num Enb Expression\n")); | |
c906108c SS |
2043 | |
2044 | for (d = display_chain; d; d = d->next) | |
2045 | { | |
b5de0fa7 | 2046 | printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]); |
c906108c SS |
2047 | if (d->format.size) |
2048 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
c5aa993b | 2049 | d->format.format); |
c906108c SS |
2050 | else if (d->format.format) |
2051 | printf_filtered ("/%c ", d->format.format); | |
fa8a61dc | 2052 | puts_filtered (d->exp_string); |
ae767bfb | 2053 | if (d->block && !contained_in (get_selected_block (0), d->block)) |
a3f17187 | 2054 | printf_filtered (_(" (cannot be evaluated in the current context)")); |
c906108c SS |
2055 | printf_filtered ("\n"); |
2056 | gdb_flush (gdb_stdout); | |
2057 | } | |
2058 | } | |
2059 | ||
c9174737 PA |
2060 | /* Callback fo map_display_numbers, that enables or disables the |
2061 | passed in display D. */ | |
2062 | ||
c906108c | 2063 | static void |
c9174737 | 2064 | do_enable_disable_display (struct display *d, void *data) |
c906108c | 2065 | { |
c9174737 PA |
2066 | d->enabled_p = *(int *) data; |
2067 | } | |
c906108c | 2068 | |
c9174737 PA |
2069 | /* Implamentation of both the "disable display" and "enable display" |
2070 | commands. ENABLE decides what to do. */ | |
2071 | ||
2072 | static void | |
77763700 | 2073 | enable_disable_display_command (const char *args, int from_tty, int enable) |
c9174737 PA |
2074 | { |
2075 | if (args == NULL) | |
c906108c | 2076 | { |
c9174737 | 2077 | struct display *d; |
c5aa993b | 2078 | |
c9174737 PA |
2079 | ALL_DISPLAYS (d) |
2080 | d->enabled_p = enable; | |
2081 | return; | |
2082 | } | |
c5aa993b | 2083 | |
c9174737 | 2084 | map_display_numbers (args, do_enable_disable_display, &enable); |
c906108c SS |
2085 | } |
2086 | ||
c9174737 PA |
2087 | /* The "enable display" command. */ |
2088 | ||
c906108c | 2089 | static void |
77763700 | 2090 | enable_display_command (const char *args, int from_tty) |
c906108c | 2091 | { |
c9174737 PA |
2092 | enable_disable_display_command (args, from_tty, 1); |
2093 | } | |
c5aa993b | 2094 | |
c9174737 | 2095 | /* The "disable display" command. */ |
c906108c | 2096 | |
c9174737 | 2097 | static void |
77763700 | 2098 | disable_display_command (const char *args, int from_tty) |
c9174737 PA |
2099 | { |
2100 | enable_disable_display_command (args, from_tty, 0); | |
c906108c | 2101 | } |
a3247a22 | 2102 | |
a3247a22 PP |
2103 | /* display_chain items point to blocks and expressions. Some expressions in |
2104 | turn may point to symbols. | |
2105 | Both symbols and blocks are obstack_alloc'd on objfile_stack, and are | |
2106 | obstack_free'd when a shared library is unloaded. | |
2107 | Clear pointers that are about to become dangling. | |
2108 | Both .exp and .block fields will be restored next time we need to display | |
2109 | an item by re-parsing .exp_string field in the new execution context. */ | |
2110 | ||
2111 | static void | |
63644780 | 2112 | clear_dangling_display_expressions (struct objfile *objfile) |
a3247a22 PP |
2113 | { |
2114 | struct display *d; | |
63644780 | 2115 | struct program_space *pspace; |
a3247a22 | 2116 | |
c0201579 JK |
2117 | /* With no symbol file we cannot have a block or expression from it. */ |
2118 | if (objfile == NULL) | |
2119 | return; | |
63644780 | 2120 | pspace = objfile->pspace; |
c0201579 | 2121 | if (objfile->separate_debug_objfile_backlink) |
63644780 NB |
2122 | { |
2123 | objfile = objfile->separate_debug_objfile_backlink; | |
2124 | gdb_assert (objfile->pspace == pspace); | |
2125 | } | |
c0201579 JK |
2126 | |
2127 | for (d = display_chain; d != NULL; d = d->next) | |
a3247a22 | 2128 | { |
63644780 | 2129 | if (d->pspace != pspace) |
c0201579 JK |
2130 | continue; |
2131 | ||
2132 | if (lookup_objfile_from_block (d->block) == objfile | |
4d01a485 | 2133 | || (d->exp != NULL && exp_uses_objfile (d->exp.get (), objfile))) |
c0201579 | 2134 | { |
4d01a485 | 2135 | d->exp.reset (); |
c0201579 JK |
2136 | d->block = NULL; |
2137 | } | |
a3247a22 PP |
2138 | } |
2139 | } | |
c906108c | 2140 | \f |
c5aa993b | 2141 | |
675dcf4f | 2142 | /* Print the value in stack frame FRAME of a variable specified by a |
aad95b57 TT |
2143 | struct symbol. NAME is the name to print; if NULL then VAR's print |
2144 | name will be used. STREAM is the ui_file on which to print the | |
2145 | value. INDENT specifies the number of indent levels to print | |
8f043999 JK |
2146 | before printing the variable name. |
2147 | ||
2148 | This function invalidates FRAME. */ | |
c906108c SS |
2149 | |
2150 | void | |
aad95b57 TT |
2151 | print_variable_and_value (const char *name, struct symbol *var, |
2152 | struct frame_info *frame, | |
2153 | struct ui_file *stream, int indent) | |
c906108c | 2154 | { |
c906108c | 2155 | |
aad95b57 TT |
2156 | if (!name) |
2157 | name = SYMBOL_PRINT_NAME (var); | |
2158 | ||
2159 | fprintf_filtered (stream, "%s%s = ", n_spaces (2 * indent), name); | |
492d29ea | 2160 | TRY |
0f6a939d PM |
2161 | { |
2162 | struct value *val; | |
2163 | struct value_print_options opts; | |
aad95b57 | 2164 | |
63e43d3a PMR |
2165 | /* READ_VAR_VALUE needs a block in order to deal with non-local |
2166 | references (i.e. to handle nested functions). In this context, we | |
2167 | print variables that are local to this frame, so we can avoid passing | |
2168 | a block to it. */ | |
2169 | val = read_var_value (var, NULL, frame); | |
0f6a939d | 2170 | get_user_print_options (&opts); |
3343315b | 2171 | opts.deref_ref = 1; |
0f6a939d | 2172 | common_val_print (val, stream, indent, &opts, current_language); |
8f043999 JK |
2173 | |
2174 | /* common_val_print invalidates FRAME when a pretty printer calls inferior | |
2175 | function. */ | |
2176 | frame = NULL; | |
0f6a939d | 2177 | } |
492d29ea PA |
2178 | CATCH (except, RETURN_MASK_ERROR) |
2179 | { | |
2180 | fprintf_filtered(stream, "<error reading variable %s (%s)>", name, | |
2181 | except.message); | |
2182 | } | |
2183 | END_CATCH | |
2184 | ||
aad95b57 | 2185 | fprintf_filtered (stream, "\n"); |
c906108c SS |
2186 | } |
2187 | ||
c2792f5a DE |
2188 | /* Subroutine of ui_printf to simplify it. |
2189 | Print VALUE to STREAM using FORMAT. | |
e12f57ab | 2190 | VALUE is a C-style string on the target. */ |
c2792f5a DE |
2191 | |
2192 | static void | |
2193 | printf_c_string (struct ui_file *stream, const char *format, | |
2194 | struct value *value) | |
2195 | { | |
2196 | gdb_byte *str; | |
2197 | CORE_ADDR tem; | |
2198 | int j; | |
2199 | ||
2200 | tem = value_as_address (value); | |
3ae9ce5d TT |
2201 | if (tem == 0) |
2202 | { | |
af39b1c2 SM |
2203 | DIAGNOSTIC_PUSH |
2204 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
3ae9ce5d | 2205 | fprintf_filtered (stream, format, "(null)"); |
af39b1c2 | 2206 | DIAGNOSTIC_POP |
3ae9ce5d TT |
2207 | return; |
2208 | } | |
c2792f5a DE |
2209 | |
2210 | /* This is a %s argument. Find the length of the string. */ | |
2211 | for (j = 0;; j++) | |
2212 | { | |
2213 | gdb_byte c; | |
2214 | ||
2215 | QUIT; | |
2216 | read_memory (tem + j, &c, 1); | |
2217 | if (c == 0) | |
2218 | break; | |
2219 | } | |
2220 | ||
2221 | /* Copy the string contents into a string inside GDB. */ | |
2222 | str = (gdb_byte *) alloca (j + 1); | |
2223 | if (j != 0) | |
2224 | read_memory (tem, str, j); | |
2225 | str[j] = 0; | |
2226 | ||
af39b1c2 SM |
2227 | DIAGNOSTIC_PUSH |
2228 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2229 | fprintf_filtered (stream, format, (char *) str); |
af39b1c2 | 2230 | DIAGNOSTIC_POP |
c2792f5a DE |
2231 | } |
2232 | ||
2233 | /* Subroutine of ui_printf to simplify it. | |
2234 | Print VALUE to STREAM using FORMAT. | |
e12f57ab | 2235 | VALUE is a wide C-style string on the target. */ |
c2792f5a DE |
2236 | |
2237 | static void | |
2238 | printf_wide_c_string (struct ui_file *stream, const char *format, | |
2239 | struct value *value) | |
2240 | { | |
2241 | gdb_byte *str; | |
2242 | CORE_ADDR tem; | |
2243 | int j; | |
2244 | struct gdbarch *gdbarch = get_type_arch (value_type (value)); | |
2245 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
2246 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
2247 | "wchar_t", NULL, 0); | |
2248 | int wcwidth = TYPE_LENGTH (wctype); | |
224c3ddb | 2249 | gdb_byte *buf = (gdb_byte *) alloca (wcwidth); |
c2792f5a DE |
2250 | |
2251 | tem = value_as_address (value); | |
3ae9ce5d TT |
2252 | if (tem == 0) |
2253 | { | |
af39b1c2 SM |
2254 | DIAGNOSTIC_PUSH |
2255 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
3ae9ce5d | 2256 | fprintf_filtered (stream, format, "(null)"); |
af39b1c2 | 2257 | DIAGNOSTIC_POP |
3ae9ce5d TT |
2258 | return; |
2259 | } | |
c2792f5a DE |
2260 | |
2261 | /* This is a %s argument. Find the length of the string. */ | |
2262 | for (j = 0;; j += wcwidth) | |
2263 | { | |
2264 | QUIT; | |
2265 | read_memory (tem + j, buf, wcwidth); | |
2266 | if (extract_unsigned_integer (buf, wcwidth, byte_order) == 0) | |
2267 | break; | |
2268 | } | |
2269 | ||
2270 | /* Copy the string contents into a string inside GDB. */ | |
2271 | str = (gdb_byte *) alloca (j + wcwidth); | |
2272 | if (j != 0) | |
2273 | read_memory (tem, str, j); | |
2274 | memset (&str[j], 0, wcwidth); | |
2275 | ||
8268c778 | 2276 | auto_obstack output; |
c2792f5a DE |
2277 | |
2278 | convert_between_encodings (target_wide_charset (gdbarch), | |
2279 | host_charset (), | |
2280 | str, j, wcwidth, | |
2281 | &output, translit_char); | |
2282 | obstack_grow_str0 (&output, ""); | |
2283 | ||
af39b1c2 SM |
2284 | DIAGNOSTIC_PUSH |
2285 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2286 | fprintf_filtered (stream, format, obstack_base (&output)); |
af39b1c2 | 2287 | DIAGNOSTIC_POP |
c2792f5a DE |
2288 | } |
2289 | ||
2290 | /* Subroutine of ui_printf to simplify it. | |
16e812b2 | 2291 | Print VALUE, a floating point value, to STREAM using FORMAT. */ |
c2792f5a DE |
2292 | |
2293 | static void | |
16e812b2 UW |
2294 | printf_floating (struct ui_file *stream, const char *format, |
2295 | struct value *value, enum argclass argclass) | |
c2792f5a | 2296 | { |
c2792f5a DE |
2297 | /* Parameter data. */ |
2298 | struct type *param_type = value_type (value); | |
2299 | struct gdbarch *gdbarch = get_type_arch (param_type); | |
c2792f5a | 2300 | |
16e812b2 UW |
2301 | /* Determine target type corresponding to the format string. */ |
2302 | struct type *fmt_type; | |
2303 | switch (argclass) | |
c2792f5a | 2304 | { |
16e812b2 UW |
2305 | case double_arg: |
2306 | fmt_type = builtin_type (gdbarch)->builtin_double; | |
2307 | break; | |
2308 | case long_double_arg: | |
2309 | fmt_type = builtin_type (gdbarch)->builtin_long_double; | |
2310 | break; | |
2311 | case dec32float_arg: | |
2312 | fmt_type = builtin_type (gdbarch)->builtin_decfloat; | |
2313 | break; | |
2314 | case dec64float_arg: | |
2315 | fmt_type = builtin_type (gdbarch)->builtin_decdouble; | |
2316 | break; | |
2317 | case dec128float_arg: | |
2318 | fmt_type = builtin_type (gdbarch)->builtin_declong; | |
2319 | break; | |
2320 | default: | |
2321 | gdb_assert_not_reached ("unexpected argument class"); | |
c2792f5a DE |
2322 | } |
2323 | ||
16e812b2 UW |
2324 | /* To match the traditional GDB behavior, the conversion is |
2325 | done differently depending on the type of the parameter: | |
2326 | ||
2327 | - if the parameter has floating-point type, it's value | |
2328 | is converted to the target type; | |
2329 | ||
2330 | - otherwise, if the parameter has a type that is of the | |
2331 | same size as a built-in floating-point type, the value | |
2332 | bytes are interpreted as if they were of that type, and | |
2333 | then converted to the target type (this is not done for | |
2334 | decimal floating-point argument classes); | |
2335 | ||
2336 | - otherwise, if the source value has an integer value, | |
2337 | it's value is converted to the target type; | |
c2792f5a | 2338 | |
16e812b2 | 2339 | - otherwise, an error is raised. |
c2792f5a | 2340 | |
16e812b2 UW |
2341 | In either case, the result of the conversion is a byte buffer |
2342 | formatted in the target format for the target type. */ | |
2343 | ||
2344 | if (TYPE_CODE (fmt_type) == TYPE_CODE_FLT) | |
2345 | { | |
2346 | param_type = float_type_from_length (param_type); | |
2347 | if (param_type != value_type (value)) | |
2348 | value = value_from_contents (param_type, value_contents (value)); | |
2349 | } | |
2350 | ||
2351 | value = value_cast (fmt_type, value); | |
c2792f5a | 2352 | |
3b4b2f16 | 2353 | /* Convert the value to a string and print it. */ |
f69fdf9b UW |
2354 | std::string str |
2355 | = target_float_to_string (value_contents (value), fmt_type, format); | |
3b4b2f16 | 2356 | fputs_filtered (str.c_str (), stream); |
c2792f5a DE |
2357 | } |
2358 | ||
2359 | /* Subroutine of ui_printf to simplify it. | |
2360 | Print VALUE, a target pointer, to STREAM using FORMAT. */ | |
2361 | ||
2362 | static void | |
2363 | printf_pointer (struct ui_file *stream, const char *format, | |
2364 | struct value *value) | |
2365 | { | |
2366 | /* We avoid the host's %p because pointers are too | |
2367 | likely to be the wrong size. The only interesting | |
2368 | modifier for %p is a width; extract that, and then | |
2369 | handle %p as glibc would: %#x or a literal "(nil)". */ | |
2370 | ||
2371 | const char *p; | |
2372 | char *fmt, *fmt_p; | |
2373 | #ifdef PRINTF_HAS_LONG_LONG | |
2374 | long long val = value_as_long (value); | |
2375 | #else | |
2376 | long val = value_as_long (value); | |
2377 | #endif | |
2378 | ||
224c3ddb | 2379 | fmt = (char *) alloca (strlen (format) + 5); |
c2792f5a DE |
2380 | |
2381 | /* Copy up to the leading %. */ | |
2382 | p = format; | |
2383 | fmt_p = fmt; | |
2384 | while (*p) | |
2385 | { | |
2386 | int is_percent = (*p == '%'); | |
2387 | ||
2388 | *fmt_p++ = *p++; | |
2389 | if (is_percent) | |
2390 | { | |
2391 | if (*p == '%') | |
2392 | *fmt_p++ = *p++; | |
2393 | else | |
2394 | break; | |
2395 | } | |
2396 | } | |
2397 | ||
2398 | if (val != 0) | |
2399 | *fmt_p++ = '#'; | |
2400 | ||
b8c2339b TT |
2401 | /* Copy any width or flags. Only the "-" flag is valid for pointers |
2402 | -- see the format_pieces constructor. */ | |
2403 | while (*p == '-' || (*p >= '0' && *p < '9')) | |
c2792f5a DE |
2404 | *fmt_p++ = *p++; |
2405 | ||
2406 | gdb_assert (*p == 'p' && *(p + 1) == '\0'); | |
2407 | if (val != 0) | |
2408 | { | |
2409 | #ifdef PRINTF_HAS_LONG_LONG | |
2410 | *fmt_p++ = 'l'; | |
2411 | #endif | |
2412 | *fmt_p++ = 'l'; | |
2413 | *fmt_p++ = 'x'; | |
2414 | *fmt_p++ = '\0'; | |
af39b1c2 SM |
2415 | DIAGNOSTIC_PUSH |
2416 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2417 | fprintf_filtered (stream, fmt, val); |
af39b1c2 | 2418 | DIAGNOSTIC_POP |
c2792f5a DE |
2419 | } |
2420 | else | |
2421 | { | |
2422 | *fmt_p++ = 's'; | |
2423 | *fmt_p++ = '\0'; | |
af39b1c2 SM |
2424 | DIAGNOSTIC_PUSH |
2425 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2426 | fprintf_filtered (stream, fmt, "(nil)"); |
af39b1c2 | 2427 | DIAGNOSTIC_POP |
c2792f5a DE |
2428 | } |
2429 | } | |
2430 | ||
a04b0428 JB |
2431 | /* printf "printf format string" ARG to STREAM. */ |
2432 | ||
2433 | static void | |
bbc13ae3 | 2434 | ui_printf (const char *arg, struct ui_file *stream) |
c906108c | 2435 | { |
bbc13ae3 | 2436 | const char *s = arg; |
8e481c3b | 2437 | std::vector<struct value *> val_args; |
c906108c SS |
2438 | |
2439 | if (s == 0) | |
e2e0b3e5 | 2440 | error_no_arg (_("format-control string and values to print")); |
c906108c | 2441 | |
f1735a53 | 2442 | s = skip_spaces (s); |
c906108c | 2443 | |
675dcf4f | 2444 | /* A format string should follow, enveloped in double quotes. */ |
c906108c | 2445 | if (*s++ != '"') |
8a3fe4f8 | 2446 | error (_("Bad format string, missing '\"'.")); |
c906108c | 2447 | |
8e481c3b | 2448 | format_pieces fpieces (&s); |
c906108c | 2449 | |
d3ce09f5 SS |
2450 | if (*s++ != '"') |
2451 | error (_("Bad format string, non-terminated '\"'.")); | |
2452 | ||
f1735a53 | 2453 | s = skip_spaces (s); |
c906108c SS |
2454 | |
2455 | if (*s != ',' && *s != 0) | |
8a3fe4f8 | 2456 | error (_("Invalid argument syntax")); |
c906108c | 2457 | |
c5aa993b JM |
2458 | if (*s == ',') |
2459 | s++; | |
f1735a53 | 2460 | s = skip_spaces (s); |
c906108c | 2461 | |
c906108c | 2462 | { |
c906108c | 2463 | int nargs_wanted; |
8e481c3b TT |
2464 | int i; |
2465 | const char *current_substring; | |
c906108c | 2466 | |
c906108c | 2467 | nargs_wanted = 0; |
8e481c3b TT |
2468 | for (auto &&piece : fpieces) |
2469 | if (piece.argclass != literal_piece) | |
d3ce09f5 | 2470 | ++nargs_wanted; |
c906108c SS |
2471 | |
2472 | /* Now, parse all arguments and evaluate them. | |
2473 | Store the VALUEs in VAL_ARGS. */ | |
2474 | ||
2475 | while (*s != '\0') | |
2476 | { | |
bbc13ae3 | 2477 | const char *s1; |
ad3bbd48 | 2478 | |
a04b0428 | 2479 | s1 = s; |
8e481c3b | 2480 | val_args.push_back (parse_to_comma_and_eval (&s1)); |
c5aa993b | 2481 | |
c906108c SS |
2482 | s = s1; |
2483 | if (*s == ',') | |
2484 | s++; | |
2485 | } | |
c5aa993b | 2486 | |
8e481c3b | 2487 | if (val_args.size () != nargs_wanted) |
8a3fe4f8 | 2488 | error (_("Wrong number of arguments for specified format-string")); |
c906108c SS |
2489 | |
2490 | /* Now actually print them. */ | |
d3ce09f5 | 2491 | i = 0; |
8e481c3b | 2492 | for (auto &&piece : fpieces) |
c906108c | 2493 | { |
8e481c3b TT |
2494 | current_substring = piece.string; |
2495 | switch (piece.argclass) | |
c906108c SS |
2496 | { |
2497 | case string_arg: | |
c2792f5a | 2498 | printf_c_string (stream, current_substring, val_args[i]); |
c906108c | 2499 | break; |
6c7a06a3 | 2500 | case wide_string_arg: |
c2792f5a | 2501 | printf_wide_c_string (stream, current_substring, val_args[i]); |
6c7a06a3 TT |
2502 | break; |
2503 | case wide_char_arg: | |
2504 | { | |
50810684 UW |
2505 | struct gdbarch *gdbarch |
2506 | = get_type_arch (value_type (val_args[i])); | |
2507 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
e6c014f2 | 2508 | "wchar_t", NULL, 0); |
6c7a06a3 | 2509 | struct type *valtype; |
6c7a06a3 TT |
2510 | const gdb_byte *bytes; |
2511 | ||
2512 | valtype = value_type (val_args[i]); | |
2513 | if (TYPE_LENGTH (valtype) != TYPE_LENGTH (wctype) | |
2514 | || TYPE_CODE (valtype) != TYPE_CODE_INT) | |
2515 | error (_("expected wchar_t argument for %%lc")); | |
2516 | ||
2517 | bytes = value_contents (val_args[i]); | |
2518 | ||
8268c778 | 2519 | auto_obstack output; |
6c7a06a3 | 2520 | |
f870a310 | 2521 | convert_between_encodings (target_wide_charset (gdbarch), |
6c7a06a3 TT |
2522 | host_charset (), |
2523 | bytes, TYPE_LENGTH (valtype), | |
2524 | TYPE_LENGTH (valtype), | |
2525 | &output, translit_char); | |
2526 | obstack_grow_str0 (&output, ""); | |
2527 | ||
af39b1c2 SM |
2528 | DIAGNOSTIC_PUSH |
2529 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 HZ |
2530 | fprintf_filtered (stream, current_substring, |
2531 | obstack_base (&output)); | |
af39b1c2 | 2532 | DIAGNOSTIC_POP |
6c7a06a3 TT |
2533 | } |
2534 | break; | |
c906108c | 2535 | case long_long_arg: |
74a0d9f6 | 2536 | #ifdef PRINTF_HAS_LONG_LONG |
c906108c SS |
2537 | { |
2538 | long long val = value_as_long (val_args[i]); | |
ad3bbd48 | 2539 | |
af39b1c2 SM |
2540 | DIAGNOSTIC_PUSH |
2541 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2542 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2543 | DIAGNOSTIC_POP |
c906108c SS |
2544 | break; |
2545 | } | |
2546 | #else | |
8a3fe4f8 | 2547 | error (_("long long not supported in printf")); |
c906108c SS |
2548 | #endif |
2549 | case int_arg: | |
2550 | { | |
46e9880c | 2551 | int val = value_as_long (val_args[i]); |
ad3bbd48 | 2552 | |
af39b1c2 SM |
2553 | DIAGNOSTIC_PUSH |
2554 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2555 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2556 | DIAGNOSTIC_POP |
46e9880c DJ |
2557 | break; |
2558 | } | |
2559 | case long_arg: | |
2560 | { | |
c906108c | 2561 | long val = value_as_long (val_args[i]); |
ad3bbd48 | 2562 | |
af39b1c2 SM |
2563 | DIAGNOSTIC_PUSH |
2564 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2565 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2566 | DIAGNOSTIC_POP |
c906108c SS |
2567 | break; |
2568 | } | |
16e812b2 UW |
2569 | /* Handles floating-point values. */ |
2570 | case double_arg: | |
2571 | case long_double_arg: | |
2572 | case dec32float_arg: | |
2573 | case dec64float_arg: | |
2574 | case dec128float_arg: | |
2575 | printf_floating (stream, current_substring, val_args[i], | |
8e481c3b | 2576 | piece.argclass); |
c2792f5a | 2577 | break; |
2025a643 | 2578 | case ptr_arg: |
c2792f5a DE |
2579 | printf_pointer (stream, current_substring, val_args[i]); |
2580 | break; | |
d3ce09f5 SS |
2581 | case literal_piece: |
2582 | /* Print a portion of the format string that has no | |
2583 | directives. Note that this will not include any | |
2584 | ordinary %-specs, but it might include "%%". That is | |
2585 | why we use printf_filtered and not puts_filtered here. | |
2586 | Also, we pass a dummy argument because some platforms | |
2587 | have modified GCC to include -Wformat-security by | |
2588 | default, which will warn here if there is no | |
2589 | argument. */ | |
af39b1c2 SM |
2590 | DIAGNOSTIC_PUSH |
2591 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
d3ce09f5 | 2592 | fprintf_filtered (stream, current_substring, 0); |
af39b1c2 | 2593 | DIAGNOSTIC_POP |
d3ce09f5 | 2594 | break; |
675dcf4f MK |
2595 | default: |
2596 | internal_error (__FILE__, __LINE__, | |
2025a643 | 2597 | _("failed internal consistency check")); |
c906108c | 2598 | } |
d3ce09f5 | 2599 | /* Maybe advance to the next argument. */ |
8e481c3b | 2600 | if (piece.argclass != literal_piece) |
d3ce09f5 | 2601 | ++i; |
c906108c | 2602 | } |
c906108c | 2603 | } |
c906108c | 2604 | } |
c906108c | 2605 | |
f1421989 HZ |
2606 | /* Implement the "printf" command. */ |
2607 | ||
a04b0428 | 2608 | static void |
0b39b52e | 2609 | printf_command (const char *arg, int from_tty) |
f1421989 | 2610 | { |
a04b0428 | 2611 | ui_printf (arg, gdb_stdout); |
50b34a18 | 2612 | gdb_flush (gdb_stdout); |
f1421989 HZ |
2613 | } |
2614 | ||
2615 | /* Implement the "eval" command. */ | |
2616 | ||
2617 | static void | |
0b39b52e | 2618 | eval_command (const char *arg, int from_tty) |
f1421989 | 2619 | { |
d7e74731 | 2620 | string_file stb; |
f1421989 | 2621 | |
d7e74731 | 2622 | ui_printf (arg, &stb); |
f1421989 | 2623 | |
d7e74731 | 2624 | std::string expanded = insert_user_defined_cmd_args (stb.c_str ()); |
01770bbd | 2625 | |
95a6b0a1 | 2626 | execute_command (expanded.c_str (), from_tty); |
f1421989 HZ |
2627 | } |
2628 | ||
c906108c | 2629 | void |
fba45db2 | 2630 | _initialize_printcmd (void) |
c906108c | 2631 | { |
c94fdfd0 EZ |
2632 | struct cmd_list_element *c; |
2633 | ||
c906108c SS |
2634 | current_display_number = -1; |
2635 | ||
76727919 | 2636 | gdb::observers::free_objfile.attach (clear_dangling_display_expressions); |
a3247a22 | 2637 | |
11db9430 | 2638 | add_info ("address", info_address_command, |
1bedd215 | 2639 | _("Describe where symbol SYM is stored.")); |
c906108c | 2640 | |
11db9430 | 2641 | add_info ("symbol", info_symbol_command, _("\ |
1bedd215 AC |
2642 | Describe what symbol is at location ADDR.\n\ |
2643 | Only for symbols with fixed locations (global or static scope).")); | |
c906108c | 2644 | |
1bedd215 AC |
2645 | add_com ("x", class_vars, x_command, _("\ |
2646 | Examine memory: x/FMT ADDRESS.\n\ | |
c906108c SS |
2647 | ADDRESS is an expression for the memory address to examine.\n\ |
2648 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2649 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
6fbe845e AB |
2650 | t(binary), f(float), a(address), i(instruction), c(char), s(string)\n\ |
2651 | and z(hex, zero padded on the left).\n\ | |
1bedd215 | 2652 | Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ |
c906108c | 2653 | The specified number of objects of the specified size are printed\n\ |
bb556f1f TK |
2654 | according to the format. If a negative number is specified, memory is\n\ |
2655 | examined backward from the address.\n\n\ | |
c906108c SS |
2656 | Defaults for format and size letters are those previously used.\n\ |
2657 | Default count is 1. Default address is following last thing printed\n\ | |
1bedd215 | 2658 | with this command or \"print\".")); |
c906108c | 2659 | |
c906108c SS |
2660 | #if 0 |
2661 | add_com ("whereis", class_vars, whereis_command, | |
1bedd215 | 2662 | _("Print line number and file of definition of variable.")); |
c906108c | 2663 | #endif |
c5aa993b | 2664 | |
11db9430 | 2665 | add_info ("display", info_display_command, _("\ |
1bedd215 | 2666 | Expressions to display when program stops, with code numbers.")); |
c906108c | 2667 | |
1a966eab AC |
2668 | add_cmd ("undisplay", class_vars, undisplay_command, _("\ |
2669 | Cancel some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2670 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2671 | No argument means cancel all automatic-display expressions.\n\ | |
2672 | \"delete display\" has the same effect as this command.\n\ | |
1a966eab | 2673 | Do \"info display\" to see current list of code numbers."), |
c5aa993b | 2674 | &cmdlist); |
c906108c | 2675 | |
1bedd215 AC |
2676 | add_com ("display", class_vars, display_command, _("\ |
2677 | Print value of expression EXP each time the program stops.\n\ | |
c906108c SS |
2678 | /FMT may be used before EXP as in the \"print\" command.\n\ |
2679 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2680 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2681 | and examining is done as in the \"x\" command.\n\n\ | |
2682 | With no argument, display all currently requested auto-display expressions.\n\ | |
1bedd215 | 2683 | Use \"undisplay\" to cancel display requests previously made.")); |
c906108c | 2684 | |
c9174737 | 2685 | add_cmd ("display", class_vars, enable_display_command, _("\ |
1a966eab | 2686 | Enable some expressions to be displayed when program stops.\n\ |
c906108c SS |
2687 | Arguments are the code numbers of the expressions to resume displaying.\n\ |
2688 | No argument means enable all automatic-display expressions.\n\ | |
1a966eab | 2689 | Do \"info display\" to see current list of code numbers."), &enablelist); |
c906108c | 2690 | |
1a966eab AC |
2691 | add_cmd ("display", class_vars, disable_display_command, _("\ |
2692 | Disable some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2693 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2694 | No argument means disable all automatic-display expressions.\n\ | |
1a966eab | 2695 | Do \"info display\" to see current list of code numbers."), &disablelist); |
c906108c | 2696 | |
1a966eab AC |
2697 | add_cmd ("display", class_vars, undisplay_command, _("\ |
2698 | Cancel some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2699 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2700 | No argument means cancel all automatic-display expressions.\n\ | |
1a966eab | 2701 | Do \"info display\" to see current list of code numbers."), &deletelist); |
c906108c | 2702 | |
1bedd215 | 2703 | add_com ("printf", class_vars, printf_command, _("\ |
80ae639d TT |
2704 | Formatted printing, like the C \"printf\" function.\n\ |
2705 | Usage: printf \"format string\", arg1, arg2, arg3, ..., argn\n\ | |
2706 | This supports most C printf format specifications, like %s, %d, etc.")); | |
c906108c | 2707 | |
1bedd215 AC |
2708 | add_com ("output", class_vars, output_command, _("\ |
2709 | Like \"print\" but don't put in value history and don't print newline.\n\ | |
2710 | This is useful in user-defined commands.")); | |
c906108c | 2711 | |
1bedd215 AC |
2712 | add_prefix_cmd ("set", class_vars, set_command, _("\ |
2713 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2714 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2715 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2716 | with $), a register (a few standard names starting with $), or an actual\n\ | |
1bedd215 AC |
2717 | variable in the program being debugged. EXP is any valid expression.\n\ |
2718 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
2719 | \n\ | |
2720 | With a subcommand, this command modifies parts of the gdb environment.\n\ | |
2721 | You can see these environment settings with the \"show\" command."), | |
c5aa993b | 2722 | &setlist, "set ", 1, &cmdlist); |
c906108c | 2723 | if (dbx_commands) |
0b39b52e | 2724 | add_com ("assign", class_vars, set_command, _("\ |
1bedd215 | 2725 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ |
c906108c SS |
2726 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2727 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2728 | with $), a register (a few standard names starting with $), or an actual\n\ | |
1bedd215 AC |
2729 | variable in the program being debugged. EXP is any valid expression.\n\ |
2730 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
c906108c | 2731 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
1bedd215 | 2732 | You can see these environment settings with the \"show\" command.")); |
c906108c | 2733 | |
0df8b418 | 2734 | /* "call" is the same as "set", but handy for dbx users to call fns. */ |
1bedd215 AC |
2735 | c = add_com ("call", class_vars, call_command, _("\ |
2736 | Call a function in the program.\n\ | |
c906108c SS |
2737 | The argument is the function name and arguments, in the notation of the\n\ |
2738 | current working language. The result is printed and saved in the value\n\ | |
1bedd215 | 2739 | history, if it is not void.")); |
65d12d83 | 2740 | set_cmd_completer (c, expression_completer); |
c906108c | 2741 | |
1a966eab AC |
2742 | add_cmd ("variable", class_vars, set_command, _("\ |
2743 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2744 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2745 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2746 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2747 | variable in the program being debugged. EXP is any valid expression.\n\ | |
1a966eab | 2748 | This may usually be abbreviated to simply \"set\"."), |
c5aa993b | 2749 | &setlist); |
3fcded8f | 2750 | add_alias_cmd ("var", "variable", class_vars, 0, &setlist); |
c906108c | 2751 | |
1bedd215 AC |
2752 | c = add_com ("print", class_vars, print_command, _("\ |
2753 | Print value of expression EXP.\n\ | |
c906108c SS |
2754 | Variables accessible are those of the lexical environment of the selected\n\ |
2755 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2756 | \n\ | |
2757 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2758 | $$NUM refers to NUM'th value back from the last one.\n\ | |
1bedd215 AC |
2759 | Names starting with $ refer to registers (with the values they would have\n\ |
2760 | if the program were to return to the stack frame now selected, restoring\n\ | |
c906108c SS |
2761 | all registers saved by frames farther in) or else to debugger\n\ |
2762 | \"convenience\" variables (any such name not a known register).\n\ | |
1bedd215 AC |
2763 | Use assignment expressions to give values to convenience variables.\n\ |
2764 | \n\ | |
c906108c SS |
2765 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ |
2766 | @ is a binary operator for treating consecutive data objects\n\ | |
2767 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2768 | element is FOO, whose second element is stored in the space following\n\ | |
2769 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
1bedd215 AC |
2770 | resides in memory.\n\ |
2771 | \n\ | |
c906108c | 2772 | EXP may be preceded with /FMT, where FMT is a format letter\n\ |
1bedd215 | 2773 | but no count or size letter (see \"x\" command).")); |
65d12d83 | 2774 | set_cmd_completer (c, expression_completer); |
c906108c | 2775 | add_com_alias ("p", "print", class_vars, 1); |
e93a8774 | 2776 | add_com_alias ("inspect", "print", class_vars, 1); |
c906108c | 2777 | |
35096d9d AC |
2778 | add_setshow_uinteger_cmd ("max-symbolic-offset", no_class, |
2779 | &max_symbolic_offset, _("\ | |
2780 | Set the largest offset that will be printed in <symbol+1234> form."), _("\ | |
f81d1120 PA |
2781 | Show the largest offset that will be printed in <symbol+1234> form."), _("\ |
2782 | Tell GDB to only display the symbolic form of an address if the\n\ | |
2783 | offset between the closest earlier symbol and the address is less than\n\ | |
2784 | the specified maximum offset. The default is \"unlimited\", which tells GDB\n\ | |
2785 | to always print the symbolic form of an address if any symbol precedes\n\ | |
2786 | it. Zero is equivalent to \"unlimited\"."), | |
35096d9d | 2787 | NULL, |
920d2a44 | 2788 | show_max_symbolic_offset, |
35096d9d | 2789 | &setprintlist, &showprintlist); |
5bf193a2 AC |
2790 | add_setshow_boolean_cmd ("symbol-filename", no_class, |
2791 | &print_symbol_filename, _("\ | |
2792 | Set printing of source filename and line number with <symbol>."), _("\ | |
2793 | Show printing of source filename and line number with <symbol>."), NULL, | |
2794 | NULL, | |
920d2a44 | 2795 | show_print_symbol_filename, |
5bf193a2 | 2796 | &setprintlist, &showprintlist); |
f1421989 HZ |
2797 | |
2798 | add_com ("eval", no_class, eval_command, _("\ | |
2799 | Convert \"printf format string\", arg1, arg2, arg3, ..., argn to\n\ | |
2800 | a command line, and call it.")); | |
c906108c | 2801 | } |