Commit | Line | Data |
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c906108c | 1 | /* Print values for GNU debugger GDB. |
e2ad119d | 2 | |
42a4f53d | 3 | Copyright (C) 1986-2019 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
c906108c SS |
21 | #include "frame.h" |
22 | #include "symtab.h" | |
23 | #include "gdbtypes.h" | |
24 | #include "value.h" | |
25 | #include "language.h" | |
26 | #include "expression.h" | |
27 | #include "gdbcore.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "target.h" | |
30 | #include "breakpoint.h" | |
31 | #include "demangle.h" | |
50f182aa | 32 | #include "gdb-demangle.h" |
c906108c SS |
33 | #include "valprint.h" |
34 | #include "annotate.h" | |
c5aa993b JM |
35 | #include "symfile.h" /* for overlay functions */ |
36 | #include "objfiles.h" /* ditto */ | |
c94fdfd0 | 37 | #include "completer.h" /* for completion functions */ |
8b93c638 | 38 | #include "ui-out.h" |
fe898f56 | 39 | #include "block.h" |
92bf2b80 | 40 | #include "disasm.h" |
f69fdf9b | 41 | #include "target-float.h" |
76727919 | 42 | #include "observable.h" |
a3247a22 | 43 | #include "solist.h" |
a3247a22 | 44 | #include "parser-defs.h" |
6c7a06a3 | 45 | #include "charset.h" |
704e9165 | 46 | #include "arch-utils.h" |
e9cafbcc | 47 | #include "cli/cli-utils.h" |
01770bbd | 48 | #include "cli/cli-script.h" |
80ae2043 | 49 | #include "cli/cli-style.h" |
d3ce09f5 | 50 | #include "format.h" |
05cba821 | 51 | #include "source.h" |
d5722aa2 | 52 | #include "common/byte-vector.h" |
af79b68d | 53 | #include "cli/cli-style.h" |
c906108c | 54 | |
c906108c SS |
55 | /* Last specified output format. */ |
56 | ||
a6bac58e | 57 | static char last_format = 0; |
c906108c SS |
58 | |
59 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
60 | ||
61 | static char last_size = 'w'; | |
62 | ||
9be2ae8f TT |
63 | /* Last specified count for the 'x' command. */ |
64 | ||
65 | static int last_count; | |
66 | ||
5d3729b5 | 67 | /* Default address to examine next, and associated architecture. */ |
c906108c | 68 | |
5d3729b5 | 69 | static struct gdbarch *next_gdbarch; |
c906108c SS |
70 | static CORE_ADDR next_address; |
71 | ||
a4642986 MR |
72 | /* Number of delay instructions following current disassembled insn. */ |
73 | ||
74 | static int branch_delay_insns; | |
75 | ||
c906108c SS |
76 | /* Last address examined. */ |
77 | ||
78 | static CORE_ADDR last_examine_address; | |
79 | ||
80 | /* Contents of last address examined. | |
81 | This is not valid past the end of the `x' command! */ | |
82 | ||
9b558729 | 83 | static value_ref_ptr last_examine_value; |
c906108c SS |
84 | |
85 | /* Largest offset between a symbolic value and an address, that will be | |
86 | printed as `0x1234 <symbol+offset>'. */ | |
87 | ||
88 | static unsigned int max_symbolic_offset = UINT_MAX; | |
920d2a44 AC |
89 | static void |
90 | show_max_symbolic_offset (struct ui_file *file, int from_tty, | |
91 | struct cmd_list_element *c, const char *value) | |
92 | { | |
3e43a32a MS |
93 | fprintf_filtered (file, |
94 | _("The largest offset that will be " | |
95 | "printed in <symbol+1234> form is %s.\n"), | |
920d2a44 AC |
96 | value); |
97 | } | |
c906108c SS |
98 | |
99 | /* Append the source filename and linenumber of the symbol when | |
100 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
101 | static int print_symbol_filename = 0; | |
920d2a44 AC |
102 | static void |
103 | show_print_symbol_filename (struct ui_file *file, int from_tty, | |
104 | struct cmd_list_element *c, const char *value) | |
105 | { | |
3e43a32a MS |
106 | fprintf_filtered (file, _("Printing of source filename and " |
107 | "line number with <symbol> is %s.\n"), | |
920d2a44 AC |
108 | value); |
109 | } | |
c906108c SS |
110 | |
111 | /* Number of auto-display expression currently being displayed. | |
9d8fa392 | 112 | So that we can disable it if we get a signal within it. |
c906108c SS |
113 | -1 when not doing one. */ |
114 | ||
5a18e302 | 115 | static int current_display_number; |
c906108c | 116 | |
c906108c | 117 | struct display |
c5aa993b JM |
118 | { |
119 | /* Chain link to next auto-display item. */ | |
120 | struct display *next; | |
6c95b8df | 121 | |
fa8a61dc TT |
122 | /* The expression as the user typed it. */ |
123 | char *exp_string; | |
6c95b8df | 124 | |
c5aa993b | 125 | /* Expression to be evaluated and displayed. */ |
4d01a485 | 126 | expression_up exp; |
6c95b8df | 127 | |
c5aa993b JM |
128 | /* Item number of this auto-display item. */ |
129 | int number; | |
6c95b8df | 130 | |
c5aa993b JM |
131 | /* Display format specified. */ |
132 | struct format_data format; | |
6c95b8df PA |
133 | |
134 | /* Program space associated with `block'. */ | |
135 | struct program_space *pspace; | |
136 | ||
0df8b418 | 137 | /* Innermost block required by this expression when evaluated. */ |
270140bd | 138 | const struct block *block; |
6c95b8df | 139 | |
0df8b418 | 140 | /* Status of this display (enabled or disabled). */ |
b5de0fa7 | 141 | int enabled_p; |
c5aa993b | 142 | }; |
c906108c SS |
143 | |
144 | /* Chain of expressions whose values should be displayed | |
145 | automatically each time the program stops. */ | |
146 | ||
147 | static struct display *display_chain; | |
148 | ||
149 | static int display_number; | |
150 | ||
c9174737 PA |
151 | /* Walk the following statement or block through all displays. |
152 | ALL_DISPLAYS_SAFE does so even if the statement deletes the current | |
153 | display. */ | |
3c3fe74c PA |
154 | |
155 | #define ALL_DISPLAYS(B) \ | |
156 | for (B = display_chain; B; B = B->next) | |
157 | ||
c9174737 PA |
158 | #define ALL_DISPLAYS_SAFE(B,TMP) \ |
159 | for (B = display_chain; \ | |
160 | B ? (TMP = B->next, 1): 0; \ | |
161 | B = TMP) | |
162 | ||
0df8b418 | 163 | /* Prototypes for local functions. */ |
c906108c | 164 | |
a14ed312 | 165 | static void do_one_display (struct display *); |
c906108c | 166 | \f |
c5aa993b | 167 | |
c906108c SS |
168 | /* Decode a format specification. *STRING_PTR should point to it. |
169 | OFORMAT and OSIZE are used as defaults for the format and size | |
170 | if none are given in the format specification. | |
171 | If OSIZE is zero, then the size field of the returned value | |
172 | should be set only if a size is explicitly specified by the | |
173 | user. | |
174 | The structure returned describes all the data | |
175 | found in the specification. In addition, *STRING_PTR is advanced | |
176 | past the specification and past all whitespace following it. */ | |
177 | ||
178 | static struct format_data | |
6f937416 | 179 | decode_format (const char **string_ptr, int oformat, int osize) |
c906108c SS |
180 | { |
181 | struct format_data val; | |
6f937416 | 182 | const char *p = *string_ptr; |
c906108c SS |
183 | |
184 | val.format = '?'; | |
185 | val.size = '?'; | |
186 | val.count = 1; | |
a6bac58e | 187 | val.raw = 0; |
c906108c | 188 | |
bb556f1f TK |
189 | if (*p == '-') |
190 | { | |
191 | val.count = -1; | |
192 | p++; | |
193 | } | |
c906108c | 194 | if (*p >= '0' && *p <= '9') |
bb556f1f | 195 | val.count *= atoi (p); |
c5aa993b JM |
196 | while (*p >= '0' && *p <= '9') |
197 | p++; | |
c906108c SS |
198 | |
199 | /* Now process size or format letters that follow. */ | |
200 | ||
201 | while (1) | |
202 | { | |
203 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
204 | val.size = *p++; | |
a6bac58e TT |
205 | else if (*p == 'r') |
206 | { | |
207 | val.raw = 1; | |
208 | p++; | |
209 | } | |
c906108c SS |
210 | else if (*p >= 'a' && *p <= 'z') |
211 | val.format = *p++; | |
212 | else | |
213 | break; | |
214 | } | |
215 | ||
2f433492 | 216 | *string_ptr = skip_spaces (p); |
c906108c SS |
217 | |
218 | /* Set defaults for format and size if not specified. */ | |
219 | if (val.format == '?') | |
220 | { | |
221 | if (val.size == '?') | |
222 | { | |
223 | /* Neither has been specified. */ | |
224 | val.format = oformat; | |
225 | val.size = osize; | |
226 | } | |
227 | else | |
228 | /* If a size is specified, any format makes a reasonable | |
229 | default except 'i'. */ | |
230 | val.format = oformat == 'i' ? 'x' : oformat; | |
231 | } | |
232 | else if (val.size == '?') | |
233 | switch (val.format) | |
234 | { | |
235 | case 'a': | |
5d3729b5 UW |
236 | /* Pick the appropriate size for an address. This is deferred |
237 | until do_examine when we know the actual architecture to use. | |
238 | A special size value of 'a' is used to indicate this case. */ | |
239 | val.size = osize ? 'a' : osize; | |
c906108c SS |
240 | break; |
241 | case 'f': | |
242 | /* Floating point has to be word or giantword. */ | |
243 | if (osize == 'w' || osize == 'g') | |
244 | val.size = osize; | |
245 | else | |
246 | /* Default it to giantword if the last used size is not | |
247 | appropriate. */ | |
248 | val.size = osize ? 'g' : osize; | |
249 | break; | |
250 | case 'c': | |
251 | /* Characters default to one byte. */ | |
252 | val.size = osize ? 'b' : osize; | |
253 | break; | |
9a22f0d0 | 254 | case 's': |
3e43a32a MS |
255 | /* Display strings with byte size chars unless explicitly |
256 | specified. */ | |
9a22f0d0 PM |
257 | val.size = '\0'; |
258 | break; | |
259 | ||
c906108c SS |
260 | default: |
261 | /* The default is the size most recently specified. */ | |
262 | val.size = osize; | |
263 | } | |
264 | ||
265 | return val; | |
266 | } | |
267 | \f | |
79a45b7d | 268 | /* Print value VAL on stream according to OPTIONS. |
c906108c | 269 | Do not end with a newline. |
c906108c | 270 | SIZE is the letter for the size of datum being printed. |
ea37ba09 DJ |
271 | This is used to pad hex numbers so they line up. SIZE is 0 |
272 | for print / output and set for examine. */ | |
c906108c SS |
273 | |
274 | static void | |
79a45b7d TT |
275 | print_formatted (struct value *val, int size, |
276 | const struct value_print_options *options, | |
fba45db2 | 277 | struct ui_file *stream) |
c906108c | 278 | { |
df407dfe | 279 | struct type *type = check_typedef (value_type (val)); |
c906108c SS |
280 | int len = TYPE_LENGTH (type); |
281 | ||
282 | if (VALUE_LVAL (val) == lval_memory) | |
42ae5230 | 283 | next_address = value_address (val) + len; |
c906108c | 284 | |
ea37ba09 | 285 | if (size) |
c906108c | 286 | { |
79a45b7d | 287 | switch (options->format) |
ea37ba09 DJ |
288 | { |
289 | case 's': | |
6c7a06a3 TT |
290 | { |
291 | struct type *elttype = value_type (val); | |
ad3bbd48 | 292 | |
42ae5230 | 293 | next_address = (value_address (val) |
09ca9e2e | 294 | + val_print_string (elttype, NULL, |
42ae5230 | 295 | value_address (val), -1, |
9a22f0d0 | 296 | stream, options) * len); |
6c7a06a3 | 297 | } |
ea37ba09 | 298 | return; |
c906108c | 299 | |
ea37ba09 DJ |
300 | case 'i': |
301 | /* We often wrap here if there are long symbolic names. */ | |
302 | wrap_here (" "); | |
42ae5230 | 303 | next_address = (value_address (val) |
13274fc3 UW |
304 | + gdb_print_insn (get_type_arch (type), |
305 | value_address (val), stream, | |
ea37ba09 DJ |
306 | &branch_delay_insns)); |
307 | return; | |
308 | } | |
c906108c | 309 | } |
ea37ba09 | 310 | |
79a45b7d | 311 | if (options->format == 0 || options->format == 's' |
4e885b20 | 312 | || TYPE_CODE (type) == TYPE_CODE_REF |
ea37ba09 DJ |
313 | || TYPE_CODE (type) == TYPE_CODE_ARRAY |
314 | || TYPE_CODE (type) == TYPE_CODE_STRING | |
315 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
316 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
317 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
79a45b7d | 318 | value_print (val, stream, options); |
ea37ba09 | 319 | else |
b021a221 MS |
320 | /* User specified format, so don't look to the type to tell us |
321 | what to do. */ | |
ab2188aa | 322 | val_print_scalar_formatted (type, |
ab2188aa PA |
323 | value_embedded_offset (val), |
324 | val, | |
325 | options, size, stream); | |
c906108c SS |
326 | } |
327 | ||
b806fb9a UW |
328 | /* Return builtin floating point type of same length as TYPE. |
329 | If no such type is found, return TYPE itself. */ | |
330 | static struct type * | |
50810684 | 331 | float_type_from_length (struct type *type) |
b806fb9a | 332 | { |
50810684 | 333 | struct gdbarch *gdbarch = get_type_arch (type); |
b806fb9a | 334 | const struct builtin_type *builtin = builtin_type (gdbarch); |
b806fb9a | 335 | |
744a8059 | 336 | if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_float)) |
b806fb9a | 337 | type = builtin->builtin_float; |
744a8059 | 338 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_double)) |
b806fb9a | 339 | type = builtin->builtin_double; |
744a8059 | 340 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_long_double)) |
b806fb9a UW |
341 | type = builtin->builtin_long_double; |
342 | ||
343 | return type; | |
344 | } | |
345 | ||
c906108c | 346 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, |
ab2188aa PA |
347 | according to OPTIONS and SIZE on STREAM. Formats s and i are not |
348 | supported at this level. */ | |
c906108c SS |
349 | |
350 | void | |
7c543f7b | 351 | print_scalar_formatted (const gdb_byte *valaddr, struct type *type, |
79a45b7d TT |
352 | const struct value_print_options *options, |
353 | int size, struct ui_file *stream) | |
c906108c | 354 | { |
50810684 | 355 | struct gdbarch *gdbarch = get_type_arch (type); |
c906108c | 356 | unsigned int len = TYPE_LENGTH (type); |
69feb676 | 357 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 358 | |
ab2188aa PA |
359 | /* String printing should go through val_print_scalar_formatted. */ |
360 | gdb_assert (options->format != 's'); | |
ea37ba09 | 361 | |
ef166cf4 | 362 | /* If the value is a pointer, and pointers and addresses are not the |
d0aee0c4 | 363 | same, then at this point, the value's length (in target bytes) is |
17a912b6 | 364 | gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */ |
ef166cf4 | 365 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
69feb676 | 366 | len = gdbarch_addr_bit (gdbarch) / TARGET_CHAR_BIT; |
ef166cf4 | 367 | |
c906108c SS |
368 | /* If we are printing it as unsigned, truncate it in case it is actually |
369 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
370 | (if shorts are 16 bits) instead of 4294967295). */ | |
d9109c80 TT |
371 | if (options->format != 'c' |
372 | && (options->format != 'd' || TYPE_UNSIGNED (type))) | |
c906108c | 373 | { |
d9109c80 TT |
374 | if (len < TYPE_LENGTH (type) && byte_order == BFD_ENDIAN_BIG) |
375 | valaddr += TYPE_LENGTH (type) - len; | |
c906108c SS |
376 | } |
377 | ||
d9109c80 | 378 | if (size != 0 && (options->format == 'x' || options->format == 't')) |
c906108c | 379 | { |
d9109c80 TT |
380 | /* Truncate to fit. */ |
381 | unsigned newlen; | |
382 | switch (size) | |
c906108c | 383 | { |
d9109c80 TT |
384 | case 'b': |
385 | newlen = 1; | |
386 | break; | |
387 | case 'h': | |
388 | newlen = 2; | |
389 | break; | |
390 | case 'w': | |
391 | newlen = 4; | |
392 | break; | |
393 | case 'g': | |
394 | newlen = 8; | |
395 | break; | |
396 | default: | |
397 | error (_("Undefined output size \"%c\"."), size); | |
c906108c | 398 | } |
d9109c80 TT |
399 | if (newlen < len && byte_order == BFD_ENDIAN_BIG) |
400 | valaddr += len - newlen; | |
401 | len = newlen; | |
402 | } | |
c906108c | 403 | |
d9109c80 TT |
404 | /* Historically gdb has printed floats by first casting them to a |
405 | long, and then printing the long. PR cli/16242 suggests changing | |
406 | this to using C-style hex float format. */ | |
d5722aa2 | 407 | gdb::byte_vector converted_float_bytes; |
d9109c80 TT |
408 | if (TYPE_CODE (type) == TYPE_CODE_FLT |
409 | && (options->format == 'o' | |
410 | || options->format == 'x' | |
411 | || options->format == 't' | |
d6382fff TT |
412 | || options->format == 'z' |
413 | || options->format == 'd' | |
414 | || options->format == 'u')) | |
d9109c80 TT |
415 | { |
416 | LONGEST val_long = unpack_long (type, valaddr); | |
417 | converted_float_bytes.resize (TYPE_LENGTH (type)); | |
418 | store_signed_integer (converted_float_bytes.data (), TYPE_LENGTH (type), | |
419 | byte_order, val_long); | |
420 | valaddr = converted_float_bytes.data (); | |
421 | } | |
c906108c | 422 | |
fdf0cbc2 UW |
423 | /* Printing a non-float type as 'f' will interpret the data as if it were |
424 | of a floating-point type of the same length, if that exists. Otherwise, | |
425 | the data is printed as integer. */ | |
426 | char format = options->format; | |
427 | if (format == 'f' && TYPE_CODE (type) != TYPE_CODE_FLT) | |
428 | { | |
429 | type = float_type_from_length (type); | |
430 | if (TYPE_CODE (type) != TYPE_CODE_FLT) | |
431 | format = 0; | |
432 | } | |
433 | ||
434 | switch (format) | |
d9109c80 TT |
435 | { |
436 | case 'o': | |
437 | print_octal_chars (stream, valaddr, len, byte_order); | |
438 | break; | |
d6382fff TT |
439 | case 'd': |
440 | print_decimal_chars (stream, valaddr, len, true, byte_order); | |
441 | break; | |
c906108c | 442 | case 'u': |
d9109c80 | 443 | print_decimal_chars (stream, valaddr, len, false, byte_order); |
c906108c | 444 | break; |
d9109c80 | 445 | case 0: |
d9109c80 TT |
446 | if (TYPE_CODE (type) != TYPE_CODE_FLT) |
447 | { | |
448 | print_decimal_chars (stream, valaddr, len, !TYPE_UNSIGNED (type), | |
449 | byte_order); | |
450 | break; | |
451 | } | |
452 | /* FALLTHROUGH */ | |
453 | case 'f': | |
d9109c80 | 454 | print_floating (valaddr, type, stream); |
c906108c SS |
455 | break; |
456 | ||
d9109c80 TT |
457 | case 't': |
458 | print_binary_chars (stream, valaddr, len, byte_order, size > 0); | |
459 | break; | |
460 | case 'x': | |
461 | print_hex_chars (stream, valaddr, len, byte_order, size > 0); | |
462 | break; | |
463 | case 'z': | |
464 | print_hex_chars (stream, valaddr, len, byte_order, true); | |
c906108c | 465 | break; |
c906108c | 466 | case 'c': |
79a45b7d TT |
467 | { |
468 | struct value_print_options opts = *options; | |
69feb676 | 469 | |
d9109c80 TT |
470 | LONGEST val_long = unpack_long (type, valaddr); |
471 | ||
ad3bbd48 | 472 | opts.format = 0; |
79a45b7d | 473 | if (TYPE_UNSIGNED (type)) |
69feb676 UW |
474 | type = builtin_type (gdbarch)->builtin_true_unsigned_char; |
475 | else | |
476 | type = builtin_type (gdbarch)->builtin_true_char; | |
477 | ||
478 | value_print (value_from_longest (type, val_long), stream, &opts); | |
79a45b7d | 479 | } |
c906108c SS |
480 | break; |
481 | ||
d9109c80 | 482 | case 'a': |
c906108c | 483 | { |
d9109c80 | 484 | CORE_ADDR addr = unpack_pointer (type, valaddr); |
c906108c | 485 | |
d9109c80 | 486 | print_address (gdbarch, addr, stream); |
c906108c SS |
487 | } |
488 | break; | |
489 | ||
490 | default: | |
fdf0cbc2 | 491 | error (_("Undefined output format \"%c\"."), format); |
c906108c SS |
492 | } |
493 | } | |
494 | ||
495 | /* Specify default address for `x' command. | |
675dcf4f | 496 | The `info lines' command uses this. */ |
c906108c SS |
497 | |
498 | void | |
8b9b9e1a | 499 | set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 500 | { |
8b9b9e1a UW |
501 | struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
502 | ||
5d3729b5 | 503 | next_gdbarch = gdbarch; |
c906108c SS |
504 | next_address = addr; |
505 | ||
506 | /* Make address available to the user as $_. */ | |
507 | set_internalvar (lookup_internalvar ("_"), | |
8b9b9e1a | 508 | value_from_pointer (ptr_type, addr)); |
c906108c SS |
509 | } |
510 | ||
511 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
512 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
513 | Optionally also print source file and line number, if available. | |
514 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
515 | or to interpret it as a possible C++ name and convert it back to source | |
516 | form. However note that DO_DEMANGLE can be overridden by the specific | |
9cb709b6 TT |
517 | settings of the demangle and asm_demangle variables. Returns |
518 | non-zero if anything was printed; zero otherwise. */ | |
c906108c | 519 | |
9cb709b6 | 520 | int |
22e722e1 DJ |
521 | print_address_symbolic (struct gdbarch *gdbarch, CORE_ADDR addr, |
522 | struct ui_file *stream, | |
a121b7c1 | 523 | int do_demangle, const char *leadin) |
dfcd3bfb | 524 | { |
c7110220 | 525 | std::string name, filename; |
dfcd3bfb JM |
526 | int unmapped = 0; |
527 | int offset = 0; | |
528 | int line = 0; | |
529 | ||
22e722e1 | 530 | if (build_address_symbolic (gdbarch, addr, do_demangle, &name, &offset, |
675dcf4f | 531 | &filename, &line, &unmapped)) |
c7110220 | 532 | return 0; |
dfcd3bfb JM |
533 | |
534 | fputs_filtered (leadin, stream); | |
535 | if (unmapped) | |
536 | fputs_filtered ("<*", stream); | |
537 | else | |
538 | fputs_filtered ("<", stream); | |
af79b68d | 539 | fputs_styled (name.c_str (), function_name_style.style (), stream); |
dfcd3bfb JM |
540 | if (offset != 0) |
541 | fprintf_filtered (stream, "+%u", (unsigned int) offset); | |
542 | ||
543 | /* Append source filename and line number if desired. Give specific | |
544 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
c7110220 | 545 | if (print_symbol_filename && !filename.empty ()) |
dfcd3bfb | 546 | { |
af79b68d TT |
547 | fputs_filtered (line == -1 ? " in " : " at ", stream); |
548 | fputs_styled (filename.c_str (), file_name_style.style (), stream); | |
dfcd3bfb | 549 | if (line != -1) |
af79b68d | 550 | fprintf_filtered (stream, ":%d", line); |
dfcd3bfb JM |
551 | } |
552 | if (unmapped) | |
553 | fputs_filtered ("*>", stream); | |
554 | else | |
555 | fputs_filtered (">", stream); | |
556 | ||
9cb709b6 | 557 | return 1; |
dfcd3bfb JM |
558 | } |
559 | ||
c7110220 TT |
560 | /* See valprint.h. */ |
561 | ||
dfcd3bfb | 562 | int |
22e722e1 DJ |
563 | build_address_symbolic (struct gdbarch *gdbarch, |
564 | CORE_ADDR addr, /* IN */ | |
dfcd3bfb | 565 | int do_demangle, /* IN */ |
c7110220 | 566 | std::string *name, /* OUT */ |
dfcd3bfb | 567 | int *offset, /* OUT */ |
c7110220 | 568 | std::string *filename, /* OUT */ |
dfcd3bfb JM |
569 | int *line, /* OUT */ |
570 | int *unmapped) /* OUT */ | |
c906108c | 571 | { |
77e371c0 | 572 | struct bound_minimal_symbol msymbol; |
c906108c | 573 | struct symbol *symbol; |
c906108c | 574 | CORE_ADDR name_location = 0; |
714835d5 | 575 | struct obj_section *section = NULL; |
0d5cff50 | 576 | const char *name_temp = ""; |
dfcd3bfb | 577 | |
89c83b10 | 578 | /* Let's say it is mapped (not unmapped). */ |
dfcd3bfb | 579 | *unmapped = 0; |
c906108c | 580 | |
dfcd3bfb | 581 | /* Determine if the address is in an overlay, and whether it is |
675dcf4f | 582 | mapped. */ |
c906108c SS |
583 | if (overlay_debugging) |
584 | { | |
585 | section = find_pc_overlay (addr); | |
586 | if (pc_in_unmapped_range (addr, section)) | |
587 | { | |
dfcd3bfb | 588 | *unmapped = 1; |
c906108c SS |
589 | addr = overlay_mapped_address (addr, section); |
590 | } | |
591 | } | |
592 | ||
c906108c SS |
593 | /* First try to find the address in the symbol table, then |
594 | in the minsyms. Take the closest one. */ | |
595 | ||
596 | /* This is defective in the sense that it only finds text symbols. So | |
597 | really this is kind of pointless--we should make sure that the | |
598 | minimal symbols have everything we need (by changing that we could | |
599 | save some memory, but for many debug format--ELF/DWARF or | |
600 | anything/stabs--it would be inconvenient to eliminate those minimal | |
601 | symbols anyway). */ | |
77e371c0 | 602 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section); |
c906108c SS |
603 | symbol = find_pc_sect_function (addr, section); |
604 | ||
605 | if (symbol) | |
606 | { | |
22e722e1 DJ |
607 | /* If this is a function (i.e. a code address), strip out any |
608 | non-address bits. For instance, display a pointer to the | |
609 | first instruction of a Thumb function as <function>; the | |
610 | second instruction will be <function+2>, even though the | |
611 | pointer is <function+3>. This matches the ISA behavior. */ | |
612 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
613 | ||
2b1ffcfd | 614 | name_location = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (symbol)); |
406fc7fb | 615 | if (do_demangle || asm_demangle) |
de5ad195 | 616 | name_temp = SYMBOL_PRINT_NAME (symbol); |
c906108c | 617 | else |
3567439c | 618 | name_temp = SYMBOL_LINKAGE_NAME (symbol); |
c906108c SS |
619 | } |
620 | ||
77e371c0 TT |
621 | if (msymbol.minsym != NULL |
622 | && MSYMBOL_HAS_SIZE (msymbol.minsym) | |
623 | && MSYMBOL_SIZE (msymbol.minsym) == 0 | |
624 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text | |
625 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text_gnu_ifunc | |
626 | && MSYMBOL_TYPE (msymbol.minsym) != mst_file_text) | |
627 | msymbol.minsym = NULL; | |
9cb709b6 | 628 | |
77e371c0 | 629 | if (msymbol.minsym != NULL) |
c906108c | 630 | { |
77e371c0 | 631 | if (BMSYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL) |
c906108c | 632 | { |
fe8400b4 WN |
633 | /* If this is a function (i.e. a code address), strip out any |
634 | non-address bits. For instance, display a pointer to the | |
635 | first instruction of a Thumb function as <function>; the | |
636 | second instruction will be <function+2>, even though the | |
637 | pointer is <function+3>. This matches the ISA behavior. */ | |
77e371c0 TT |
638 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_text |
639 | || MSYMBOL_TYPE (msymbol.minsym) == mst_text_gnu_ifunc | |
640 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_text | |
641 | || MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
fe8400b4 WN |
642 | addr = gdbarch_addr_bits_remove (gdbarch, addr); |
643 | ||
c906108c SS |
644 | /* The msymbol is closer to the address than the symbol; |
645 | use the msymbol instead. */ | |
646 | symbol = 0; | |
77e371c0 | 647 | name_location = BMSYMBOL_VALUE_ADDRESS (msymbol); |
406fc7fb | 648 | if (do_demangle || asm_demangle) |
77e371c0 | 649 | name_temp = MSYMBOL_PRINT_NAME (msymbol.minsym); |
c906108c | 650 | else |
77e371c0 | 651 | name_temp = MSYMBOL_LINKAGE_NAME (msymbol.minsym); |
c906108c SS |
652 | } |
653 | } | |
77e371c0 | 654 | if (symbol == NULL && msymbol.minsym == NULL) |
dfcd3bfb | 655 | return 1; |
c906108c | 656 | |
c906108c SS |
657 | /* If the nearest symbol is too far away, don't print anything symbolic. */ |
658 | ||
659 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
660 | CORE_ADDR. But when we detect unsigned wraparound in the | |
661 | CORE_ADDR math, we ignore this test and print the offset, | |
662 | because addr+max_symbolic_offset has wrapped through the end | |
663 | of the address space back to the beginning, giving bogus comparison. */ | |
664 | if (addr > name_location + max_symbolic_offset | |
665 | && name_location + max_symbolic_offset > name_location) | |
dfcd3bfb | 666 | return 1; |
c906108c | 667 | |
dfcd3bfb JM |
668 | *offset = addr - name_location; |
669 | ||
c7110220 | 670 | *name = name_temp; |
c906108c | 671 | |
c906108c SS |
672 | if (print_symbol_filename) |
673 | { | |
674 | struct symtab_and_line sal; | |
675 | ||
676 | sal = find_pc_sect_line (addr, section, 0); | |
677 | ||
678 | if (sal.symtab) | |
dfcd3bfb | 679 | { |
c7110220 | 680 | *filename = symtab_to_filename_for_display (sal.symtab); |
dfcd3bfb JM |
681 | *line = sal.line; |
682 | } | |
c906108c | 683 | } |
dfcd3bfb | 684 | return 0; |
c906108c SS |
685 | } |
686 | ||
c906108c SS |
687 | |
688 | /* Print address ADDR symbolically on STREAM. | |
689 | First print it as a number. Then perhaps print | |
690 | <SYMBOL + OFFSET> after the number. */ | |
691 | ||
692 | void | |
5af949e3 UW |
693 | print_address (struct gdbarch *gdbarch, |
694 | CORE_ADDR addr, struct ui_file *stream) | |
c906108c | 695 | { |
35fb8261 | 696 | fputs_styled (paddress (gdbarch, addr), address_style.style (), stream); |
22e722e1 | 697 | print_address_symbolic (gdbarch, addr, stream, asm_demangle, " "); |
c906108c SS |
698 | } |
699 | ||
2b28d209 PP |
700 | /* Return a prefix for instruction address: |
701 | "=> " for current instruction, else " ". */ | |
702 | ||
703 | const char * | |
704 | pc_prefix (CORE_ADDR addr) | |
705 | { | |
706 | if (has_stack_frames ()) | |
707 | { | |
708 | struct frame_info *frame; | |
709 | CORE_ADDR pc; | |
710 | ||
711 | frame = get_selected_frame (NULL); | |
ce406537 | 712 | if (get_frame_pc_if_available (frame, &pc) && pc == addr) |
2b28d209 PP |
713 | return "=> "; |
714 | } | |
715 | return " "; | |
716 | } | |
717 | ||
c906108c SS |
718 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE |
719 | controls whether to print the symbolic name "raw" or demangled. | |
9cb709b6 | 720 | Return non-zero if anything was printed; zero otherwise. */ |
c906108c | 721 | |
9cb709b6 | 722 | int |
edf0c1b7 TT |
723 | print_address_demangle (const struct value_print_options *opts, |
724 | struct gdbarch *gdbarch, CORE_ADDR addr, | |
5af949e3 | 725 | struct ui_file *stream, int do_demangle) |
c906108c | 726 | { |
1d51a733 | 727 | if (opts->addressprint) |
c906108c | 728 | { |
35fb8261 | 729 | fputs_styled (paddress (gdbarch, addr), address_style.style (), stream); |
22e722e1 | 730 | print_address_symbolic (gdbarch, addr, stream, do_demangle, " "); |
c906108c SS |
731 | } |
732 | else | |
733 | { | |
9cb709b6 | 734 | return print_address_symbolic (gdbarch, addr, stream, do_demangle, ""); |
c906108c | 735 | } |
9cb709b6 | 736 | return 1; |
c906108c SS |
737 | } |
738 | \f | |
739 | ||
bb556f1f TK |
740 | /* Find the address of the instruction that is INST_COUNT instructions before |
741 | the instruction at ADDR. | |
742 | Since some architectures have variable-length instructions, we can't just | |
743 | simply subtract INST_COUNT * INSN_LEN from ADDR. Instead, we use line | |
744 | number information to locate the nearest known instruction boundary, | |
745 | and disassemble forward from there. If we go out of the symbol range | |
746 | during disassembling, we return the lowest address we've got so far and | |
747 | set the number of instructions read to INST_READ. */ | |
748 | ||
749 | static CORE_ADDR | |
750 | find_instruction_backward (struct gdbarch *gdbarch, CORE_ADDR addr, | |
751 | int inst_count, int *inst_read) | |
752 | { | |
753 | /* The vector PCS is used to store instruction addresses within | |
754 | a pc range. */ | |
755 | CORE_ADDR loop_start, loop_end, p; | |
52d214d3 | 756 | std::vector<CORE_ADDR> pcs; |
bb556f1f | 757 | struct symtab_and_line sal; |
bb556f1f TK |
758 | |
759 | *inst_read = 0; | |
760 | loop_start = loop_end = addr; | |
761 | ||
762 | /* In each iteration of the outer loop, we get a pc range that ends before | |
763 | LOOP_START, then we count and store every instruction address of the range | |
764 | iterated in the loop. | |
765 | If the number of instructions counted reaches INST_COUNT, return the | |
766 | stored address that is located INST_COUNT instructions back from ADDR. | |
767 | If INST_COUNT is not reached, we subtract the number of counted | |
768 | instructions from INST_COUNT, and go to the next iteration. */ | |
769 | do | |
770 | { | |
52d214d3 | 771 | pcs.clear (); |
bb556f1f TK |
772 | sal = find_pc_sect_line (loop_start, NULL, 1); |
773 | if (sal.line <= 0) | |
774 | { | |
775 | /* We reach here when line info is not available. In this case, | |
776 | we print a message and just exit the loop. The return value | |
777 | is calculated after the loop. */ | |
778 | printf_filtered (_("No line number information available " | |
779 | "for address ")); | |
780 | wrap_here (" "); | |
781 | print_address (gdbarch, loop_start - 1, gdb_stdout); | |
782 | printf_filtered ("\n"); | |
783 | break; | |
784 | } | |
785 | ||
786 | loop_end = loop_start; | |
787 | loop_start = sal.pc; | |
788 | ||
789 | /* This loop pushes instruction addresses in the range from | |
790 | LOOP_START to LOOP_END. */ | |
791 | for (p = loop_start; p < loop_end;) | |
792 | { | |
52d214d3 | 793 | pcs.push_back (p); |
bb556f1f TK |
794 | p += gdb_insn_length (gdbarch, p); |
795 | } | |
796 | ||
52d214d3 TT |
797 | inst_count -= pcs.size (); |
798 | *inst_read += pcs.size (); | |
bb556f1f TK |
799 | } |
800 | while (inst_count > 0); | |
801 | ||
802 | /* After the loop, the vector PCS has instruction addresses of the last | |
803 | source line we processed, and INST_COUNT has a negative value. | |
804 | We return the address at the index of -INST_COUNT in the vector for | |
805 | the reason below. | |
806 | Let's assume the following instruction addresses and run 'x/-4i 0x400e'. | |
807 | Line X of File | |
808 | 0x4000 | |
809 | 0x4001 | |
810 | 0x4005 | |
811 | Line Y of File | |
812 | 0x4009 | |
813 | 0x400c | |
814 | => 0x400e | |
815 | 0x4011 | |
816 | find_instruction_backward is called with INST_COUNT = 4 and expected to | |
817 | return 0x4001. When we reach here, INST_COUNT is set to -1 because | |
818 | it was subtracted by 2 (from Line Y) and 3 (from Line X). The value | |
819 | 4001 is located at the index 1 of the last iterated line (= Line X), | |
820 | which is simply calculated by -INST_COUNT. | |
821 | The case when the length of PCS is 0 means that we reached an area for | |
822 | which line info is not available. In such case, we return LOOP_START, | |
823 | which was the lowest instruction address that had line info. */ | |
52d214d3 | 824 | p = pcs.size () > 0 ? pcs[-inst_count] : loop_start; |
bb556f1f TK |
825 | |
826 | /* INST_READ includes all instruction addresses in a pc range. Need to | |
827 | exclude the beginning part up to the address we're returning. That | |
828 | is, exclude {0x4000} in the example above. */ | |
829 | if (inst_count < 0) | |
830 | *inst_read += inst_count; | |
831 | ||
bb556f1f TK |
832 | return p; |
833 | } | |
834 | ||
835 | /* Backward read LEN bytes of target memory from address MEMADDR + LEN, | |
836 | placing the results in GDB's memory from MYADDR + LEN. Returns | |
837 | a count of the bytes actually read. */ | |
838 | ||
839 | static int | |
840 | read_memory_backward (struct gdbarch *gdbarch, | |
841 | CORE_ADDR memaddr, gdb_byte *myaddr, int len) | |
842 | { | |
843 | int errcode; | |
844 | int nread; /* Number of bytes actually read. */ | |
845 | ||
846 | /* First try a complete read. */ | |
847 | errcode = target_read_memory (memaddr, myaddr, len); | |
848 | if (errcode == 0) | |
849 | { | |
850 | /* Got it all. */ | |
851 | nread = len; | |
852 | } | |
853 | else | |
854 | { | |
855 | /* Loop, reading one byte at a time until we get as much as we can. */ | |
856 | memaddr += len; | |
857 | myaddr += len; | |
858 | for (nread = 0; nread < len; ++nread) | |
859 | { | |
860 | errcode = target_read_memory (--memaddr, --myaddr, 1); | |
861 | if (errcode != 0) | |
862 | { | |
863 | /* The read was unsuccessful, so exit the loop. */ | |
864 | printf_filtered (_("Cannot access memory at address %s\n"), | |
865 | paddress (gdbarch, memaddr)); | |
866 | break; | |
867 | } | |
868 | } | |
869 | } | |
870 | return nread; | |
871 | } | |
872 | ||
873 | /* Returns true if X (which is LEN bytes wide) is the number zero. */ | |
874 | ||
875 | static int | |
876 | integer_is_zero (const gdb_byte *x, int len) | |
877 | { | |
878 | int i = 0; | |
879 | ||
880 | while (i < len && x[i] == 0) | |
881 | ++i; | |
882 | return (i == len); | |
883 | } | |
884 | ||
885 | /* Find the start address of a string in which ADDR is included. | |
886 | Basically we search for '\0' and return the next address, | |
887 | but if OPTIONS->PRINT_MAX is smaller than the length of a string, | |
888 | we stop searching and return the address to print characters as many as | |
889 | PRINT_MAX from the string. */ | |
890 | ||
891 | static CORE_ADDR | |
892 | find_string_backward (struct gdbarch *gdbarch, | |
893 | CORE_ADDR addr, int count, int char_size, | |
894 | const struct value_print_options *options, | |
895 | int *strings_counted) | |
896 | { | |
897 | const int chunk_size = 0x20; | |
bb556f1f TK |
898 | int read_error = 0; |
899 | int chars_read = 0; | |
900 | int chars_to_read = chunk_size; | |
901 | int chars_counted = 0; | |
902 | int count_original = count; | |
903 | CORE_ADDR string_start_addr = addr; | |
904 | ||
905 | gdb_assert (char_size == 1 || char_size == 2 || char_size == 4); | |
26fcd5d7 | 906 | gdb::byte_vector buffer (chars_to_read * char_size); |
bb556f1f TK |
907 | while (count > 0 && read_error == 0) |
908 | { | |
909 | int i; | |
910 | ||
911 | addr -= chars_to_read * char_size; | |
26fcd5d7 | 912 | chars_read = read_memory_backward (gdbarch, addr, buffer.data (), |
bb556f1f TK |
913 | chars_to_read * char_size); |
914 | chars_read /= char_size; | |
915 | read_error = (chars_read == chars_to_read) ? 0 : 1; | |
916 | /* Searching for '\0' from the end of buffer in backward direction. */ | |
917 | for (i = 0; i < chars_read && count > 0 ; ++i, ++chars_counted) | |
918 | { | |
919 | int offset = (chars_to_read - i - 1) * char_size; | |
920 | ||
26fcd5d7 | 921 | if (integer_is_zero (&buffer[offset], char_size) |
bb556f1f TK |
922 | || chars_counted == options->print_max) |
923 | { | |
924 | /* Found '\0' or reached print_max. As OFFSET is the offset to | |
925 | '\0', we add CHAR_SIZE to return the start address of | |
926 | a string. */ | |
927 | --count; | |
928 | string_start_addr = addr + offset + char_size; | |
929 | chars_counted = 0; | |
930 | } | |
931 | } | |
932 | } | |
933 | ||
934 | /* Update STRINGS_COUNTED with the actual number of loaded strings. */ | |
935 | *strings_counted = count_original - count; | |
936 | ||
937 | if (read_error != 0) | |
938 | { | |
939 | /* In error case, STRING_START_ADDR is pointing to the string that | |
940 | was last successfully loaded. Rewind the partially loaded string. */ | |
941 | string_start_addr -= chars_counted * char_size; | |
942 | } | |
943 | ||
bb556f1f TK |
944 | return string_start_addr; |
945 | } | |
946 | ||
c906108c SS |
947 | /* Examine data at address ADDR in format FMT. |
948 | Fetch it from memory and print on gdb_stdout. */ | |
949 | ||
950 | static void | |
5d3729b5 | 951 | do_examine (struct format_data fmt, struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 952 | { |
52f0bd74 AC |
953 | char format = 0; |
954 | char size; | |
955 | int count = 1; | |
c906108c | 956 | struct type *val_type = NULL; |
52f0bd74 AC |
957 | int i; |
958 | int maxelts; | |
79a45b7d | 959 | struct value_print_options opts; |
bb556f1f TK |
960 | int need_to_update_next_address = 0; |
961 | CORE_ADDR addr_rewound = 0; | |
c906108c SS |
962 | |
963 | format = fmt.format; | |
964 | size = fmt.size; | |
965 | count = fmt.count; | |
5d3729b5 | 966 | next_gdbarch = gdbarch; |
c906108c | 967 | next_address = addr; |
c906108c | 968 | |
9a22f0d0 PM |
969 | /* Instruction format implies fetch single bytes |
970 | regardless of the specified size. | |
971 | The case of strings is handled in decode_format, only explicit | |
972 | size operator are not changed to 'b'. */ | |
973 | if (format == 'i') | |
c906108c SS |
974 | size = 'b'; |
975 | ||
5d3729b5 UW |
976 | if (size == 'a') |
977 | { | |
978 | /* Pick the appropriate size for an address. */ | |
979 | if (gdbarch_ptr_bit (next_gdbarch) == 64) | |
980 | size = 'g'; | |
981 | else if (gdbarch_ptr_bit (next_gdbarch) == 32) | |
982 | size = 'w'; | |
983 | else if (gdbarch_ptr_bit (next_gdbarch) == 16) | |
984 | size = 'h'; | |
985 | else | |
986 | /* Bad value for gdbarch_ptr_bit. */ | |
987 | internal_error (__FILE__, __LINE__, | |
988 | _("failed internal consistency check")); | |
989 | } | |
990 | ||
991 | if (size == 'b') | |
df4df182 | 992 | val_type = builtin_type (next_gdbarch)->builtin_int8; |
c906108c | 993 | else if (size == 'h') |
df4df182 | 994 | val_type = builtin_type (next_gdbarch)->builtin_int16; |
c906108c | 995 | else if (size == 'w') |
df4df182 | 996 | val_type = builtin_type (next_gdbarch)->builtin_int32; |
c906108c | 997 | else if (size == 'g') |
df4df182 | 998 | val_type = builtin_type (next_gdbarch)->builtin_int64; |
c906108c | 999 | |
9a22f0d0 PM |
1000 | if (format == 's') |
1001 | { | |
1002 | struct type *char_type = NULL; | |
ad3bbd48 | 1003 | |
9a22f0d0 PM |
1004 | /* Search for "char16_t" or "char32_t" types or fall back to 8-bit char |
1005 | if type is not found. */ | |
1006 | if (size == 'h') | |
1007 | char_type = builtin_type (next_gdbarch)->builtin_char16; | |
1008 | else if (size == 'w') | |
1009 | char_type = builtin_type (next_gdbarch)->builtin_char32; | |
1010 | if (char_type) | |
1011 | val_type = char_type; | |
1012 | else | |
1013 | { | |
1014 | if (size != '\0' && size != 'b') | |
0df8b418 MS |
1015 | warning (_("Unable to display strings with " |
1016 | "size '%c', using 'b' instead."), size); | |
9a22f0d0 PM |
1017 | size = 'b'; |
1018 | val_type = builtin_type (next_gdbarch)->builtin_int8; | |
1019 | } | |
1020 | } | |
1021 | ||
c906108c SS |
1022 | maxelts = 8; |
1023 | if (size == 'w') | |
1024 | maxelts = 4; | |
1025 | if (size == 'g') | |
1026 | maxelts = 2; | |
1027 | if (format == 's' || format == 'i') | |
1028 | maxelts = 1; | |
1029 | ||
79a45b7d TT |
1030 | get_formatted_print_options (&opts, format); |
1031 | ||
bb556f1f TK |
1032 | if (count < 0) |
1033 | { | |
1034 | /* This is the negative repeat count case. | |
1035 | We rewind the address based on the given repeat count and format, | |
1036 | then examine memory from there in forward direction. */ | |
1037 | ||
1038 | count = -count; | |
1039 | if (format == 'i') | |
1040 | { | |
1041 | next_address = find_instruction_backward (gdbarch, addr, count, | |
1042 | &count); | |
1043 | } | |
1044 | else if (format == 's') | |
1045 | { | |
1046 | next_address = find_string_backward (gdbarch, addr, count, | |
1047 | TYPE_LENGTH (val_type), | |
1048 | &opts, &count); | |
1049 | } | |
1050 | else | |
1051 | { | |
1052 | next_address = addr - count * TYPE_LENGTH (val_type); | |
1053 | } | |
1054 | ||
1055 | /* The following call to print_formatted updates next_address in every | |
1056 | iteration. In backward case, we store the start address here | |
1057 | and update next_address with it before exiting the function. */ | |
1058 | addr_rewound = (format == 's' | |
1059 | ? next_address - TYPE_LENGTH (val_type) | |
1060 | : next_address); | |
1061 | need_to_update_next_address = 1; | |
1062 | } | |
1063 | ||
c906108c SS |
1064 | /* Print as many objects as specified in COUNT, at most maxelts per line, |
1065 | with the address of the next one at the start of each line. */ | |
1066 | ||
1067 | while (count > 0) | |
1068 | { | |
1069 | QUIT; | |
2b28d209 PP |
1070 | if (format == 'i') |
1071 | fputs_filtered (pc_prefix (next_address), gdb_stdout); | |
5af949e3 | 1072 | print_address (next_gdbarch, next_address, gdb_stdout); |
c906108c SS |
1073 | printf_filtered (":"); |
1074 | for (i = maxelts; | |
1075 | i > 0 && count > 0; | |
1076 | i--, count--) | |
1077 | { | |
1078 | printf_filtered ("\t"); | |
1079 | /* Note that print_formatted sets next_address for the next | |
1080 | object. */ | |
1081 | last_examine_address = next_address; | |
1082 | ||
c906108c | 1083 | /* The value to be displayed is not fetched greedily. |
5d51a2db MR |
1084 | Instead, to avoid the possibility of a fetched value not |
1085 | being used, its retrieval is delayed until the print code | |
c5aa993b JM |
1086 | uses it. When examining an instruction stream, the |
1087 | disassembler will perform its own memory fetch using just | |
1088 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
1089 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
1090 | is left with the byte sequence from the last complete | |
0df8b418 | 1091 | instruction fetched from memory? */ |
9b558729 TT |
1092 | last_examine_value |
1093 | = release_value (value_at_lazy (val_type, next_address)); | |
c906108c | 1094 | |
9b558729 | 1095 | print_formatted (last_examine_value.get (), size, &opts, gdb_stdout); |
a4642986 MR |
1096 | |
1097 | /* Display any branch delay slots following the final insn. */ | |
1098 | if (format == 'i' && count == 1) | |
1099 | count += branch_delay_insns; | |
c906108c SS |
1100 | } |
1101 | printf_filtered ("\n"); | |
1102 | gdb_flush (gdb_stdout); | |
1103 | } | |
bb556f1f TK |
1104 | |
1105 | if (need_to_update_next_address) | |
1106 | next_address = addr_rewound; | |
c906108c SS |
1107 | } |
1108 | \f | |
1109 | static void | |
8d89f51a | 1110 | validate_format (struct format_data fmt, const char *cmdname) |
c906108c SS |
1111 | { |
1112 | if (fmt.size != 0) | |
8a3fe4f8 | 1113 | error (_("Size letters are meaningless in \"%s\" command."), cmdname); |
c906108c | 1114 | if (fmt.count != 1) |
8a3fe4f8 | 1115 | error (_("Item count other than 1 is meaningless in \"%s\" command."), |
c906108c | 1116 | cmdname); |
ea37ba09 | 1117 | if (fmt.format == 'i') |
8a3fe4f8 | 1118 | error (_("Format letter \"%c\" is meaningless in \"%s\" command."), |
c906108c SS |
1119 | fmt.format, cmdname); |
1120 | } | |
1121 | ||
1c88ceb1 JK |
1122 | /* Parse print command format string into *FMTP and update *EXPP. |
1123 | CMDNAME should name the current command. */ | |
1124 | ||
1125 | void | |
1126 | print_command_parse_format (const char **expp, const char *cmdname, | |
1127 | struct format_data *fmtp) | |
1128 | { | |
1129 | const char *exp = *expp; | |
1130 | ||
1131 | if (exp && *exp == '/') | |
1132 | { | |
1133 | exp++; | |
1134 | *fmtp = decode_format (&exp, last_format, 0); | |
1135 | validate_format (*fmtp, cmdname); | |
1136 | last_format = fmtp->format; | |
1137 | } | |
1138 | else | |
1139 | { | |
1140 | fmtp->count = 1; | |
1141 | fmtp->format = 0; | |
1142 | fmtp->size = 0; | |
1143 | fmtp->raw = 0; | |
1144 | } | |
1145 | ||
1146 | *expp = exp; | |
1147 | } | |
1148 | ||
1149 | /* Print VAL to console according to *FMTP, including recording it to | |
1150 | the history. */ | |
1151 | ||
1152 | void | |
1153 | print_value (struct value *val, const struct format_data *fmtp) | |
1154 | { | |
1155 | struct value_print_options opts; | |
1156 | int histindex = record_latest_value (val); | |
1157 | ||
1158 | annotate_value_history_begin (histindex, value_type (val)); | |
1159 | ||
1160 | printf_filtered ("$%d = ", histindex); | |
1161 | ||
1162 | annotate_value_history_value (); | |
1163 | ||
1164 | get_formatted_print_options (&opts, fmtp->format); | |
1165 | opts.raw = fmtp->raw; | |
1166 | ||
1167 | print_formatted (val, fmtp->size, &opts, gdb_stdout); | |
1168 | printf_filtered ("\n"); | |
1169 | ||
1170 | annotate_value_history_end (); | |
1171 | } | |
1172 | ||
675dcf4f | 1173 | /* Evaluate string EXP as an expression in the current language and |
c5aa993b | 1174 | print the resulting value. EXP may contain a format specifier as the |
675dcf4f | 1175 | first argument ("/x myvar" for example, to print myvar in hex). */ |
c906108c SS |
1176 | |
1177 | static void | |
6f937416 | 1178 | print_command_1 (const char *exp, int voidprint) |
c906108c | 1179 | { |
3d6d86c6 | 1180 | struct value *val; |
c906108c | 1181 | struct format_data fmt; |
c906108c | 1182 | |
1c88ceb1 | 1183 | print_command_parse_format (&exp, "print", &fmt); |
c906108c SS |
1184 | |
1185 | if (exp && *exp) | |
1186 | { | |
4d01a485 PA |
1187 | expression_up expr = parse_expression (exp); |
1188 | val = evaluate_expression (expr.get ()); | |
c906108c SS |
1189 | } |
1190 | else | |
1191 | val = access_value_history (0); | |
1192 | ||
df407dfe AC |
1193 | if (voidprint || (val && value_type (val) && |
1194 | TYPE_CODE (value_type (val)) != TYPE_CODE_VOID)) | |
1c88ceb1 | 1195 | print_value (val, &fmt); |
c906108c SS |
1196 | } |
1197 | ||
c906108c | 1198 | static void |
0b39b52e | 1199 | print_command (const char *exp, int from_tty) |
c906108c | 1200 | { |
e93a8774 | 1201 | print_command_1 (exp, 1); |
c906108c SS |
1202 | } |
1203 | ||
675dcf4f | 1204 | /* Same as print, except it doesn't print void results. */ |
c906108c | 1205 | static void |
0b39b52e | 1206 | call_command (const char *exp, int from_tty) |
c906108c | 1207 | { |
e93a8774 | 1208 | print_command_1 (exp, 0); |
c906108c SS |
1209 | } |
1210 | ||
6f937416 PA |
1211 | /* Implementation of the "output" command. */ |
1212 | ||
6f937416 | 1213 | void |
122b53ea | 1214 | output_command (const char *exp, int from_tty) |
c906108c | 1215 | { |
52f0bd74 | 1216 | char format = 0; |
3d6d86c6 | 1217 | struct value *val; |
c906108c | 1218 | struct format_data fmt; |
79a45b7d | 1219 | struct value_print_options opts; |
c906108c | 1220 | |
777ea8f1 | 1221 | fmt.size = 0; |
a6bac58e | 1222 | fmt.raw = 0; |
777ea8f1 | 1223 | |
c906108c SS |
1224 | if (exp && *exp == '/') |
1225 | { | |
1226 | exp++; | |
1227 | fmt = decode_format (&exp, 0, 0); | |
1228 | validate_format (fmt, "output"); | |
1229 | format = fmt.format; | |
1230 | } | |
1231 | ||
4d01a485 | 1232 | expression_up expr = parse_expression (exp); |
c906108c | 1233 | |
4d01a485 | 1234 | val = evaluate_expression (expr.get ()); |
c906108c | 1235 | |
df407dfe | 1236 | annotate_value_begin (value_type (val)); |
c906108c | 1237 | |
79a45b7d | 1238 | get_formatted_print_options (&opts, format); |
a6bac58e | 1239 | opts.raw = fmt.raw; |
79a45b7d | 1240 | print_formatted (val, fmt.size, &opts, gdb_stdout); |
c906108c SS |
1241 | |
1242 | annotate_value_end (); | |
1243 | ||
2acceee2 JM |
1244 | wrap_here (""); |
1245 | gdb_flush (gdb_stdout); | |
c906108c SS |
1246 | } |
1247 | ||
c906108c | 1248 | static void |
981a3fb3 | 1249 | set_command (const char *exp, int from_tty) |
c906108c | 1250 | { |
4d01a485 | 1251 | expression_up expr = parse_expression (exp); |
ad3bbd48 | 1252 | |
0ece64fd TG |
1253 | if (expr->nelts >= 1) |
1254 | switch (expr->elts[0].opcode) | |
1255 | { | |
1256 | case UNOP_PREINCREMENT: | |
1257 | case UNOP_POSTINCREMENT: | |
1258 | case UNOP_PREDECREMENT: | |
1259 | case UNOP_POSTDECREMENT: | |
1260 | case BINOP_ASSIGN: | |
1261 | case BINOP_ASSIGN_MODIFY: | |
1262 | case BINOP_COMMA: | |
1263 | break; | |
1264 | default: | |
1265 | warning | |
1266 | (_("Expression is not an assignment (and might have no effect)")); | |
1267 | } | |
52b3699b | 1268 | |
4d01a485 | 1269 | evaluate_expression (expr.get ()); |
c906108c SS |
1270 | } |
1271 | ||
c906108c | 1272 | static void |
1d12d88f | 1273 | info_symbol_command (const char *arg, int from_tty) |
c906108c SS |
1274 | { |
1275 | struct minimal_symbol *msymbol; | |
c5aa993b | 1276 | struct obj_section *osect; |
c5aa993b JM |
1277 | CORE_ADDR addr, sect_addr; |
1278 | int matches = 0; | |
1279 | unsigned int offset; | |
c906108c SS |
1280 | |
1281 | if (!arg) | |
e2e0b3e5 | 1282 | error_no_arg (_("address")); |
c906108c SS |
1283 | |
1284 | addr = parse_and_eval_address (arg); | |
3b9d3ac2 TT |
1285 | for (objfile *objfile : all_objfiles (current_program_space)) |
1286 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
c5aa993b | 1287 | { |
3b9d3ac2 TT |
1288 | /* Only process each object file once, even if there's a separate |
1289 | debug file. */ | |
1290 | if (objfile->separate_debug_objfile_backlink) | |
1291 | continue; | |
1292 | ||
1293 | sect_addr = overlay_mapped_address (addr, osect); | |
1294 | ||
1295 | if (obj_section_addr (osect) <= sect_addr | |
1296 | && sect_addr < obj_section_endaddr (osect) | |
1297 | && (msymbol | |
1298 | = lookup_minimal_symbol_by_pc_section (sect_addr, | |
1299 | osect).minsym)) | |
5178ed48 | 1300 | { |
3b9d3ac2 TT |
1301 | const char *obj_name, *mapped, *sec_name, *msym_name; |
1302 | const char *loc_string; | |
1303 | ||
1304 | matches = 1; | |
1305 | offset = sect_addr - MSYMBOL_VALUE_ADDRESS (objfile, msymbol); | |
1306 | mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped"); | |
1307 | sec_name = osect->the_bfd_section->name; | |
1308 | msym_name = MSYMBOL_PRINT_NAME (msymbol); | |
1309 | ||
1310 | /* Don't print the offset if it is zero. | |
1311 | We assume there's no need to handle i18n of "sym + offset". */ | |
1312 | std::string string_holder; | |
1313 | if (offset) | |
1314 | { | |
1315 | string_holder = string_printf ("%s + %u", msym_name, offset); | |
1316 | loc_string = string_holder.c_str (); | |
1317 | } | |
c14c28ba | 1318 | else |
3b9d3ac2 TT |
1319 | loc_string = msym_name; |
1320 | ||
1321 | gdb_assert (osect->objfile && objfile_name (osect->objfile)); | |
1322 | obj_name = objfile_name (osect->objfile); | |
1323 | ||
1324 | if (MULTI_OBJFILE_P ()) | |
1325 | if (pc_in_unmapped_range (addr, osect)) | |
1326 | if (section_is_overlay (osect)) | |
1327 | printf_filtered (_("%s in load address range of " | |
1328 | "%s overlay section %s of %s\n"), | |
1329 | loc_string, mapped, sec_name, obj_name); | |
1330 | else | |
1331 | printf_filtered (_("%s in load address range of " | |
1332 | "section %s of %s\n"), | |
1333 | loc_string, sec_name, obj_name); | |
1334 | else | |
1335 | if (section_is_overlay (osect)) | |
1336 | printf_filtered (_("%s in %s overlay section %s of %s\n"), | |
1337 | loc_string, mapped, sec_name, obj_name); | |
1338 | else | |
1339 | printf_filtered (_("%s in section %s of %s\n"), | |
1340 | loc_string, sec_name, obj_name); | |
c14c28ba | 1341 | else |
3b9d3ac2 TT |
1342 | if (pc_in_unmapped_range (addr, osect)) |
1343 | if (section_is_overlay (osect)) | |
1344 | printf_filtered (_("%s in load address range of %s overlay " | |
1345 | "section %s\n"), | |
1346 | loc_string, mapped, sec_name); | |
1347 | else | |
1348 | printf_filtered | |
1349 | (_("%s in load address range of section %s\n"), | |
1350 | loc_string, sec_name); | |
1351 | else | |
1352 | if (section_is_overlay (osect)) | |
1353 | printf_filtered (_("%s in %s overlay section %s\n"), | |
1354 | loc_string, mapped, sec_name); | |
1355 | else | |
1356 | printf_filtered (_("%s in section %s\n"), | |
1357 | loc_string, sec_name); | |
1358 | } | |
c5aa993b | 1359 | } |
c906108c | 1360 | if (matches == 0) |
a3f17187 | 1361 | printf_filtered (_("No symbol matches %s.\n"), arg); |
c906108c SS |
1362 | } |
1363 | ||
c906108c | 1364 | static void |
1d12d88f | 1365 | info_address_command (const char *exp, int from_tty) |
c906108c | 1366 | { |
768a979c UW |
1367 | struct gdbarch *gdbarch; |
1368 | int regno; | |
52f0bd74 | 1369 | struct symbol *sym; |
7c7b6655 | 1370 | struct bound_minimal_symbol msymbol; |
52f0bd74 | 1371 | long val; |
714835d5 | 1372 | struct obj_section *section; |
08922a10 | 1373 | CORE_ADDR load_addr, context_pc = 0; |
1993b719 | 1374 | struct field_of_this_result is_a_field_of_this; |
c906108c SS |
1375 | |
1376 | if (exp == 0) | |
8a3fe4f8 | 1377 | error (_("Argument required.")); |
c906108c | 1378 | |
08922a10 | 1379 | sym = lookup_symbol (exp, get_selected_block (&context_pc), VAR_DOMAIN, |
d12307c1 | 1380 | &is_a_field_of_this).symbol; |
c906108c SS |
1381 | if (sym == NULL) |
1382 | { | |
1993b719 | 1383 | if (is_a_field_of_this.type != NULL) |
c906108c SS |
1384 | { |
1385 | printf_filtered ("Symbol \""); | |
1386 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1387 | current_language->la_language, DMGL_ANSI); | |
e2b23ee9 AF |
1388 | printf_filtered ("\" is a field of the local class variable "); |
1389 | if (current_language->la_language == language_objc) | |
2625d86c | 1390 | printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */ |
e2b23ee9 | 1391 | else |
2625d86c | 1392 | printf_filtered ("`this'\n"); |
c906108c SS |
1393 | return; |
1394 | } | |
1395 | ||
7c7b6655 | 1396 | msymbol = lookup_bound_minimal_symbol (exp); |
c906108c | 1397 | |
7c7b6655 | 1398 | if (msymbol.minsym != NULL) |
c906108c | 1399 | { |
7c7b6655 | 1400 | struct objfile *objfile = msymbol.objfile; |
e27d198c TT |
1401 | |
1402 | gdbarch = get_objfile_arch (objfile); | |
77e371c0 | 1403 | load_addr = BMSYMBOL_VALUE_ADDRESS (msymbol); |
c906108c SS |
1404 | |
1405 | printf_filtered ("Symbol \""); | |
1406 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1407 | current_language->la_language, DMGL_ANSI); | |
1408 | printf_filtered ("\" is at "); | |
35fb8261 TT |
1409 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1410 | gdb_stdout); | |
c906108c | 1411 | printf_filtered (" in a file compiled without debugging"); |
efd66ac6 | 1412 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
c906108c SS |
1413 | if (section_is_overlay (section)) |
1414 | { | |
1415 | load_addr = overlay_unmapped_address (load_addr, section); | |
1416 | printf_filtered (",\n -- loaded at "); | |
35fb8261 TT |
1417 | fputs_styled (paddress (gdbarch, load_addr), |
1418 | address_style.style (), | |
1419 | gdb_stdout); | |
714835d5 UW |
1420 | printf_filtered (" in overlay section %s", |
1421 | section->the_bfd_section->name); | |
c906108c SS |
1422 | } |
1423 | printf_filtered (".\n"); | |
1424 | } | |
1425 | else | |
8a3fe4f8 | 1426 | error (_("No symbol \"%s\" in current context."), exp); |
c906108c SS |
1427 | return; |
1428 | } | |
1429 | ||
1430 | printf_filtered ("Symbol \""); | |
3567439c | 1431 | fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym), |
c906108c SS |
1432 | current_language->la_language, DMGL_ANSI); |
1433 | printf_filtered ("\" is "); | |
c5aa993b | 1434 | val = SYMBOL_VALUE (sym); |
1994afbf DE |
1435 | if (SYMBOL_OBJFILE_OWNED (sym)) |
1436 | section = SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym); | |
1437 | else | |
1438 | section = NULL; | |
08be3fe3 | 1439 | gdbarch = symbol_arch (sym); |
c906108c | 1440 | |
24d6c2a0 TT |
1441 | if (SYMBOL_COMPUTED_OPS (sym) != NULL) |
1442 | { | |
1443 | SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, context_pc, | |
1444 | gdb_stdout); | |
1445 | printf_filtered (".\n"); | |
1446 | return; | |
1447 | } | |
1448 | ||
c906108c SS |
1449 | switch (SYMBOL_CLASS (sym)) |
1450 | { | |
1451 | case LOC_CONST: | |
1452 | case LOC_CONST_BYTES: | |
1453 | printf_filtered ("constant"); | |
1454 | break; | |
1455 | ||
1456 | case LOC_LABEL: | |
1457 | printf_filtered ("a label at address "); | |
5af949e3 | 1458 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
35fb8261 TT |
1459 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1460 | gdb_stdout); | |
c906108c SS |
1461 | if (section_is_overlay (section)) |
1462 | { | |
1463 | load_addr = overlay_unmapped_address (load_addr, section); | |
1464 | printf_filtered (",\n -- loaded at "); | |
35fb8261 TT |
1465 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1466 | gdb_stdout); | |
714835d5 UW |
1467 | printf_filtered (" in overlay section %s", |
1468 | section->the_bfd_section->name); | |
c906108c SS |
1469 | } |
1470 | break; | |
1471 | ||
4c2df51b | 1472 | case LOC_COMPUTED: |
24d6c2a0 | 1473 | gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method")); |
4c2df51b | 1474 | |
c906108c | 1475 | case LOC_REGISTER: |
768a979c UW |
1476 | /* GDBARCH is the architecture associated with the objfile the symbol |
1477 | is defined in; the target architecture may be different, and may | |
1478 | provide additional registers. However, we do not know the target | |
1479 | architecture at this point. We assume the objfile architecture | |
1480 | will contain all the standard registers that occur in debug info | |
1481 | in that objfile. */ | |
1482 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
1483 | ||
2a2d4dc3 AS |
1484 | if (SYMBOL_IS_ARGUMENT (sym)) |
1485 | printf_filtered (_("an argument in register %s"), | |
768a979c | 1486 | gdbarch_register_name (gdbarch, regno)); |
2a2d4dc3 AS |
1487 | else |
1488 | printf_filtered (_("a variable in register %s"), | |
768a979c | 1489 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1490 | break; |
1491 | ||
1492 | case LOC_STATIC: | |
a3f17187 | 1493 | printf_filtered (_("static storage at address ")); |
5af949e3 | 1494 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
35fb8261 TT |
1495 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1496 | gdb_stdout); | |
c906108c SS |
1497 | if (section_is_overlay (section)) |
1498 | { | |
1499 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1500 | printf_filtered (_(",\n -- loaded at ")); |
35fb8261 TT |
1501 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1502 | gdb_stdout); | |
714835d5 UW |
1503 | printf_filtered (_(" in overlay section %s"), |
1504 | section->the_bfd_section->name); | |
c906108c SS |
1505 | } |
1506 | break; | |
1507 | ||
c906108c | 1508 | case LOC_REGPARM_ADDR: |
768a979c UW |
1509 | /* Note comment at LOC_REGISTER. */ |
1510 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
675dcf4f | 1511 | printf_filtered (_("address of an argument in register %s"), |
768a979c | 1512 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1513 | break; |
1514 | ||
1515 | case LOC_ARG: | |
a3f17187 | 1516 | printf_filtered (_("an argument at offset %ld"), val); |
c906108c SS |
1517 | break; |
1518 | ||
c906108c | 1519 | case LOC_LOCAL: |
a3f17187 | 1520 | printf_filtered (_("a local variable at frame offset %ld"), val); |
c906108c SS |
1521 | break; |
1522 | ||
1523 | case LOC_REF_ARG: | |
a3f17187 | 1524 | printf_filtered (_("a reference argument at offset %ld"), val); |
c906108c SS |
1525 | break; |
1526 | ||
c906108c | 1527 | case LOC_TYPEDEF: |
a3f17187 | 1528 | printf_filtered (_("a typedef")); |
c906108c SS |
1529 | break; |
1530 | ||
1531 | case LOC_BLOCK: | |
a3f17187 | 1532 | printf_filtered (_("a function at address ")); |
2b1ffcfd | 1533 | load_addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
35fb8261 TT |
1534 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1535 | gdb_stdout); | |
c906108c SS |
1536 | if (section_is_overlay (section)) |
1537 | { | |
1538 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1539 | printf_filtered (_(",\n -- loaded at ")); |
35fb8261 TT |
1540 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1541 | gdb_stdout); | |
714835d5 UW |
1542 | printf_filtered (_(" in overlay section %s"), |
1543 | section->the_bfd_section->name); | |
c906108c SS |
1544 | } |
1545 | break; | |
1546 | ||
1547 | case LOC_UNRESOLVED: | |
1548 | { | |
e27d198c | 1549 | struct bound_minimal_symbol msym; |
c906108c | 1550 | |
64cc34d8 | 1551 | msym = lookup_bound_minimal_symbol (SYMBOL_LINKAGE_NAME (sym)); |
e27d198c | 1552 | if (msym.minsym == NULL) |
c906108c SS |
1553 | printf_filtered ("unresolved"); |
1554 | else | |
1555 | { | |
efd66ac6 | 1556 | section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
e0740f77 JK |
1557 | |
1558 | if (section | |
1559 | && (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0) | |
5382cfab PW |
1560 | { |
1561 | load_addr = MSYMBOL_VALUE_RAW_ADDRESS (msym.minsym); | |
1562 | printf_filtered (_("a thread-local variable at offset %s " | |
1563 | "in the thread-local storage for `%s'"), | |
1564 | paddress (gdbarch, load_addr), | |
1565 | objfile_name (section->objfile)); | |
1566 | } | |
e0740f77 | 1567 | else |
c906108c | 1568 | { |
5382cfab | 1569 | load_addr = BMSYMBOL_VALUE_ADDRESS (msym); |
e0740f77 | 1570 | printf_filtered (_("static storage at address ")); |
35fb8261 TT |
1571 | fputs_styled (paddress (gdbarch, load_addr), |
1572 | address_style.style (), gdb_stdout); | |
e0740f77 JK |
1573 | if (section_is_overlay (section)) |
1574 | { | |
1575 | load_addr = overlay_unmapped_address (load_addr, section); | |
1576 | printf_filtered (_(",\n -- loaded at ")); | |
35fb8261 TT |
1577 | fputs_styled (paddress (gdbarch, load_addr), |
1578 | address_style.style (), | |
1579 | gdb_stdout); | |
e0740f77 JK |
1580 | printf_filtered (_(" in overlay section %s"), |
1581 | section->the_bfd_section->name); | |
1582 | } | |
c906108c SS |
1583 | } |
1584 | } | |
1585 | } | |
1586 | break; | |
1587 | ||
c906108c | 1588 | case LOC_OPTIMIZED_OUT: |
a3f17187 | 1589 | printf_filtered (_("optimized out")); |
c906108c | 1590 | break; |
c5aa993b | 1591 | |
c906108c | 1592 | default: |
a3f17187 | 1593 | printf_filtered (_("of unknown (botched) type")); |
c906108c SS |
1594 | break; |
1595 | } | |
1596 | printf_filtered (".\n"); | |
1597 | } | |
1598 | \f | |
675dcf4f MK |
1599 | |
1600 | static void | |
0b39b52e | 1601 | x_command (const char *exp, int from_tty) |
c906108c | 1602 | { |
c906108c | 1603 | struct format_data fmt; |
c906108c SS |
1604 | struct value *val; |
1605 | ||
a6bac58e | 1606 | fmt.format = last_format ? last_format : 'x'; |
c906108c SS |
1607 | fmt.size = last_size; |
1608 | fmt.count = 1; | |
a6bac58e | 1609 | fmt.raw = 0; |
c906108c | 1610 | |
9be2ae8f TT |
1611 | /* If there is no expression and no format, use the most recent |
1612 | count. */ | |
1613 | if (exp == nullptr && last_count > 0) | |
1614 | fmt.count = last_count; | |
1615 | ||
c906108c SS |
1616 | if (exp && *exp == '/') |
1617 | { | |
6f937416 PA |
1618 | const char *tmp = exp + 1; |
1619 | ||
1620 | fmt = decode_format (&tmp, last_format, last_size); | |
1621 | exp = (char *) tmp; | |
c906108c SS |
1622 | } |
1623 | ||
9be2ae8f TT |
1624 | last_count = fmt.count; |
1625 | ||
c906108c SS |
1626 | /* If we have an expression, evaluate it and use it as the address. */ |
1627 | ||
1628 | if (exp != 0 && *exp != 0) | |
1629 | { | |
4d01a485 | 1630 | expression_up expr = parse_expression (exp); |
675dcf4f MK |
1631 | /* Cause expression not to be there any more if this command is |
1632 | repeated with Newline. But don't clobber a user-defined | |
1633 | command's definition. */ | |
c906108c | 1634 | if (from_tty) |
85c4be7c | 1635 | set_repeat_arguments (""); |
4d01a485 | 1636 | val = evaluate_expression (expr.get ()); |
aa006118 | 1637 | if (TYPE_IS_REFERENCE (value_type (val))) |
e1c34c5d | 1638 | val = coerce_ref (val); |
c906108c | 1639 | /* In rvalue contexts, such as this, functions are coerced into |
c5aa993b | 1640 | pointers to functions. This makes "x/i main" work. */ |
c0d8fd9a | 1641 | if (/* last_format == 'i' && */ |
df407dfe | 1642 | TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC |
c5aa993b | 1643 | && VALUE_LVAL (val) == lval_memory) |
42ae5230 | 1644 | next_address = value_address (val); |
c906108c | 1645 | else |
1aa20aa8 | 1646 | next_address = value_as_address (val); |
5d3729b5 UW |
1647 | |
1648 | next_gdbarch = expr->gdbarch; | |
c906108c SS |
1649 | } |
1650 | ||
5d3729b5 UW |
1651 | if (!next_gdbarch) |
1652 | error_no_arg (_("starting display address")); | |
1653 | ||
1654 | do_examine (fmt, next_gdbarch, next_address); | |
c906108c | 1655 | |
675dcf4f | 1656 | /* If the examine succeeds, we remember its size and format for next |
9a22f0d0 PM |
1657 | time. Set last_size to 'b' for strings. */ |
1658 | if (fmt.format == 's') | |
1659 | last_size = 'b'; | |
1660 | else | |
1661 | last_size = fmt.size; | |
c906108c SS |
1662 | last_format = fmt.format; |
1663 | ||
0df8b418 | 1664 | /* Set a couple of internal variables if appropriate. */ |
9b558729 | 1665 | if (last_examine_value != nullptr) |
c906108c SS |
1666 | { |
1667 | /* Make last address examined available to the user as $_. Use | |
c5aa993b | 1668 | the correct pointer type. */ |
4478b372 | 1669 | struct type *pointer_type |
9b558729 | 1670 | = lookup_pointer_type (value_type (last_examine_value.get ())); |
c906108c | 1671 | set_internalvar (lookup_internalvar ("_"), |
4478b372 JB |
1672 | value_from_pointer (pointer_type, |
1673 | last_examine_address)); | |
c5aa993b | 1674 | |
675dcf4f MK |
1675 | /* Make contents of last address examined available to the user |
1676 | as $__. If the last value has not been fetched from memory | |
1677 | then don't fetch it now; instead mark it by voiding the $__ | |
1678 | variable. */ | |
9b558729 | 1679 | if (value_lazy (last_examine_value.get ())) |
4fa62494 | 1680 | clear_internalvar (lookup_internalvar ("__")); |
c906108c | 1681 | else |
9b558729 | 1682 | set_internalvar (lookup_internalvar ("__"), last_examine_value.get ()); |
c906108c SS |
1683 | } |
1684 | } | |
c906108c | 1685 | \f |
c5aa993b | 1686 | |
c906108c SS |
1687 | /* Add an expression to the auto-display chain. |
1688 | Specify the expression. */ | |
1689 | ||
1690 | static void | |
0b39b52e | 1691 | display_command (const char *arg, int from_tty) |
c906108c SS |
1692 | { |
1693 | struct format_data fmt; | |
fe978cb0 | 1694 | struct display *newobj; |
6f937416 | 1695 | const char *exp = arg; |
c906108c | 1696 | |
7bd0be3a | 1697 | if (exp == 0) |
c906108c | 1698 | { |
7bd0be3a AB |
1699 | do_displays (); |
1700 | return; | |
1701 | } | |
c906108c | 1702 | |
7bd0be3a AB |
1703 | if (*exp == '/') |
1704 | { | |
1705 | exp++; | |
1706 | fmt = decode_format (&exp, 0, 0); | |
1707 | if (fmt.size && fmt.format == 0) | |
1708 | fmt.format = 'x'; | |
1709 | if (fmt.format == 'i' || fmt.format == 's') | |
1710 | fmt.size = 'b'; | |
1711 | } | |
1712 | else | |
1713 | { | |
1714 | fmt.format = 0; | |
1715 | fmt.size = 0; | |
1716 | fmt.count = 0; | |
1717 | fmt.raw = 0; | |
1718 | } | |
c906108c | 1719 | |
aee1fcdf | 1720 | innermost_block.reset (); |
4d01a485 | 1721 | expression_up expr = parse_expression (exp); |
c906108c | 1722 | |
4d01a485 | 1723 | newobj = new display (); |
c906108c | 1724 | |
7bd0be3a | 1725 | newobj->exp_string = xstrdup (exp); |
b22e99fd | 1726 | newobj->exp = std::move (expr); |
aee1fcdf | 1727 | newobj->block = innermost_block.block (); |
7bd0be3a | 1728 | newobj->pspace = current_program_space; |
7bd0be3a AB |
1729 | newobj->number = ++display_number; |
1730 | newobj->format = fmt; | |
1731 | newobj->enabled_p = 1; | |
62147a22 PA |
1732 | newobj->next = NULL; |
1733 | ||
1734 | if (display_chain == NULL) | |
1735 | display_chain = newobj; | |
1736 | else | |
1737 | { | |
1738 | struct display *last; | |
1739 | ||
1740 | for (last = display_chain; last->next != NULL; last = last->next) | |
1741 | ; | |
1742 | last->next = newobj; | |
1743 | } | |
c906108c | 1744 | |
7bd0be3a AB |
1745 | if (from_tty) |
1746 | do_one_display (newobj); | |
c906108c | 1747 | |
7bd0be3a | 1748 | dont_repeat (); |
c906108c SS |
1749 | } |
1750 | ||
1751 | static void | |
fba45db2 | 1752 | free_display (struct display *d) |
c906108c | 1753 | { |
fa8a61dc | 1754 | xfree (d->exp_string); |
4d01a485 | 1755 | delete d; |
c906108c SS |
1756 | } |
1757 | ||
675dcf4f MK |
1758 | /* Clear out the display_chain. Done when new symtabs are loaded, |
1759 | since this invalidates the types stored in many expressions. */ | |
c906108c SS |
1760 | |
1761 | void | |
fba45db2 | 1762 | clear_displays (void) |
c906108c | 1763 | { |
52f0bd74 | 1764 | struct display *d; |
c906108c SS |
1765 | |
1766 | while ((d = display_chain) != NULL) | |
1767 | { | |
c906108c | 1768 | display_chain = d->next; |
fa8a61dc | 1769 | free_display (d); |
c906108c SS |
1770 | } |
1771 | } | |
1772 | ||
3c3fe74c | 1773 | /* Delete the auto-display DISPLAY. */ |
c906108c SS |
1774 | |
1775 | static void | |
3c3fe74c | 1776 | delete_display (struct display *display) |
c906108c | 1777 | { |
3c3fe74c | 1778 | struct display *d; |
c906108c | 1779 | |
3c3fe74c | 1780 | gdb_assert (display != NULL); |
c906108c | 1781 | |
3c3fe74c PA |
1782 | if (display_chain == display) |
1783 | display_chain = display->next; | |
1784 | ||
1785 | ALL_DISPLAYS (d) | |
1786 | if (d->next == display) | |
c906108c | 1787 | { |
3c3fe74c PA |
1788 | d->next = display->next; |
1789 | break; | |
c906108c | 1790 | } |
3c3fe74c PA |
1791 | |
1792 | free_display (display); | |
c906108c SS |
1793 | } |
1794 | ||
c9174737 PA |
1795 | /* Call FUNCTION on each of the displays whose numbers are given in |
1796 | ARGS. DATA is passed unmodified to FUNCTION. */ | |
c906108c SS |
1797 | |
1798 | static void | |
77763700 | 1799 | map_display_numbers (const char *args, |
c9174737 PA |
1800 | void (*function) (struct display *, |
1801 | void *), | |
1802 | void *data) | |
c906108c | 1803 | { |
c9174737 | 1804 | int num; |
c906108c | 1805 | |
c9174737 PA |
1806 | if (args == NULL) |
1807 | error_no_arg (_("one or more display numbers")); | |
c906108c | 1808 | |
bfd28288 | 1809 | number_or_range_parser parser (args); |
c9174737 | 1810 | |
bfd28288 | 1811 | while (!parser.finished ()) |
c906108c | 1812 | { |
bfd28288 | 1813 | const char *p = parser.cur_tok (); |
c906108c | 1814 | |
bfd28288 | 1815 | num = parser.get_number (); |
3c3fe74c PA |
1816 | if (num == 0) |
1817 | warning (_("bad display number at or near '%s'"), p); | |
1818 | else | |
1819 | { | |
c9174737 | 1820 | struct display *d, *tmp; |
c906108c | 1821 | |
c9174737 | 1822 | ALL_DISPLAYS_SAFE (d, tmp) |
3c3fe74c PA |
1823 | if (d->number == num) |
1824 | break; | |
1825 | if (d == NULL) | |
1826 | printf_unfiltered (_("No display number %d.\n"), num); | |
1827 | else | |
c9174737 | 1828 | function (d, data); |
3c3fe74c | 1829 | } |
c906108c | 1830 | } |
c9174737 PA |
1831 | } |
1832 | ||
1833 | /* Callback for map_display_numbers, that deletes a display. */ | |
1834 | ||
1835 | static void | |
1836 | do_delete_display (struct display *d, void *data) | |
1837 | { | |
1838 | delete_display (d); | |
1839 | } | |
1840 | ||
1841 | /* "undisplay" command. */ | |
1842 | ||
1843 | static void | |
77763700 | 1844 | undisplay_command (const char *args, int from_tty) |
c9174737 | 1845 | { |
c9174737 PA |
1846 | if (args == NULL) |
1847 | { | |
1848 | if (query (_("Delete all auto-display expressions? "))) | |
1849 | clear_displays (); | |
1850 | dont_repeat (); | |
1851 | return; | |
1852 | } | |
1853 | ||
1854 | map_display_numbers (args, do_delete_display, NULL); | |
c906108c SS |
1855 | dont_repeat (); |
1856 | } | |
1857 | ||
1858 | /* Display a single auto-display. | |
1859 | Do nothing if the display cannot be printed in the current context, | |
0df8b418 | 1860 | or if the display is disabled. */ |
c906108c SS |
1861 | |
1862 | static void | |
fba45db2 | 1863 | do_one_display (struct display *d) |
c906108c SS |
1864 | { |
1865 | int within_current_scope; | |
1866 | ||
b5de0fa7 | 1867 | if (d->enabled_p == 0) |
c906108c SS |
1868 | return; |
1869 | ||
704e9165 UW |
1870 | /* The expression carries the architecture that was used at parse time. |
1871 | This is a problem if the expression depends on architecture features | |
1872 | (e.g. register numbers), and the current architecture is now different. | |
1873 | For example, a display statement like "display/i $pc" is expected to | |
1874 | display the PC register of the current architecture, not the arch at | |
1875 | the time the display command was given. Therefore, we re-parse the | |
1876 | expression if the current architecture has changed. */ | |
1877 | if (d->exp != NULL && d->exp->gdbarch != get_current_arch ()) | |
1878 | { | |
4d01a485 | 1879 | d->exp.reset (); |
704e9165 UW |
1880 | d->block = NULL; |
1881 | } | |
1882 | ||
a3247a22 PP |
1883 | if (d->exp == NULL) |
1884 | { | |
ad3bbd48 | 1885 | |
492d29ea | 1886 | TRY |
a3247a22 | 1887 | { |
aee1fcdf | 1888 | innermost_block.reset (); |
a3247a22 | 1889 | d->exp = parse_expression (d->exp_string); |
aee1fcdf | 1890 | d->block = innermost_block.block (); |
a3247a22 | 1891 | } |
492d29ea | 1892 | CATCH (ex, RETURN_MASK_ALL) |
a3247a22 PP |
1893 | { |
1894 | /* Can't re-parse the expression. Disable this display item. */ | |
1895 | d->enabled_p = 0; | |
1896 | warning (_("Unable to display \"%s\": %s"), | |
1897 | d->exp_string, ex.message); | |
1898 | return; | |
1899 | } | |
492d29ea | 1900 | END_CATCH |
a3247a22 PP |
1901 | } |
1902 | ||
c906108c | 1903 | if (d->block) |
6c95b8df PA |
1904 | { |
1905 | if (d->pspace == current_program_space) | |
1906 | within_current_scope = contained_in (get_selected_block (0), d->block); | |
1907 | else | |
1908 | within_current_scope = 0; | |
1909 | } | |
c906108c SS |
1910 | else |
1911 | within_current_scope = 1; | |
1912 | if (!within_current_scope) | |
1913 | return; | |
1914 | ||
b7b633e9 TT |
1915 | scoped_restore save_display_number |
1916 | = make_scoped_restore (¤t_display_number, d->number); | |
c906108c SS |
1917 | |
1918 | annotate_display_begin (); | |
1919 | printf_filtered ("%d", d->number); | |
1920 | annotate_display_number_end (); | |
1921 | printf_filtered (": "); | |
1922 | if (d->format.size) | |
1923 | { | |
c906108c SS |
1924 | |
1925 | annotate_display_format (); | |
1926 | ||
1927 | printf_filtered ("x/"); | |
1928 | if (d->format.count != 1) | |
1929 | printf_filtered ("%d", d->format.count); | |
1930 | printf_filtered ("%c", d->format.format); | |
1931 | if (d->format.format != 'i' && d->format.format != 's') | |
1932 | printf_filtered ("%c", d->format.size); | |
1933 | printf_filtered (" "); | |
1934 | ||
1935 | annotate_display_expression (); | |
1936 | ||
fa8a61dc | 1937 | puts_filtered (d->exp_string); |
c906108c SS |
1938 | annotate_display_expression_end (); |
1939 | ||
6a2eb474 | 1940 | if (d->format.count != 1 || d->format.format == 'i') |
c906108c SS |
1941 | printf_filtered ("\n"); |
1942 | else | |
1943 | printf_filtered (" "); | |
c5aa993b | 1944 | |
c906108c SS |
1945 | annotate_display_value (); |
1946 | ||
492d29ea | 1947 | TRY |
9d8fa392 PA |
1948 | { |
1949 | struct value *val; | |
1950 | CORE_ADDR addr; | |
1951 | ||
4d01a485 | 1952 | val = evaluate_expression (d->exp.get ()); |
9d8fa392 PA |
1953 | addr = value_as_address (val); |
1954 | if (d->format.format == 'i') | |
1955 | addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr); | |
1956 | do_examine (d->format, d->exp->gdbarch, addr); | |
1957 | } | |
492d29ea PA |
1958 | CATCH (ex, RETURN_MASK_ERROR) |
1959 | { | |
1960 | fprintf_filtered (gdb_stdout, _("<error: %s>\n"), ex.message); | |
1961 | } | |
1962 | END_CATCH | |
c906108c SS |
1963 | } |
1964 | else | |
1965 | { | |
79a45b7d TT |
1966 | struct value_print_options opts; |
1967 | ||
c906108c SS |
1968 | annotate_display_format (); |
1969 | ||
1970 | if (d->format.format) | |
1971 | printf_filtered ("/%c ", d->format.format); | |
1972 | ||
1973 | annotate_display_expression (); | |
1974 | ||
fa8a61dc | 1975 | puts_filtered (d->exp_string); |
c906108c SS |
1976 | annotate_display_expression_end (); |
1977 | ||
1978 | printf_filtered (" = "); | |
1979 | ||
1980 | annotate_display_expression (); | |
1981 | ||
79a45b7d | 1982 | get_formatted_print_options (&opts, d->format.format); |
a6bac58e | 1983 | opts.raw = d->format.raw; |
9d8fa392 | 1984 | |
492d29ea | 1985 | TRY |
9d8fa392 PA |
1986 | { |
1987 | struct value *val; | |
1988 | ||
4d01a485 | 1989 | val = evaluate_expression (d->exp.get ()); |
9d8fa392 PA |
1990 | print_formatted (val, d->format.size, &opts, gdb_stdout); |
1991 | } | |
492d29ea PA |
1992 | CATCH (ex, RETURN_MASK_ERROR) |
1993 | { | |
1994 | fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.message); | |
1995 | } | |
1996 | END_CATCH | |
1997 | ||
c906108c SS |
1998 | printf_filtered ("\n"); |
1999 | } | |
2000 | ||
2001 | annotate_display_end (); | |
2002 | ||
2003 | gdb_flush (gdb_stdout); | |
c906108c SS |
2004 | } |
2005 | ||
2006 | /* Display all of the values on the auto-display chain which can be | |
2007 | evaluated in the current scope. */ | |
2008 | ||
2009 | void | |
fba45db2 | 2010 | do_displays (void) |
c906108c | 2011 | { |
52f0bd74 | 2012 | struct display *d; |
c906108c SS |
2013 | |
2014 | for (d = display_chain; d; d = d->next) | |
2015 | do_one_display (d); | |
2016 | } | |
2017 | ||
2018 | /* Delete the auto-display which we were in the process of displaying. | |
2019 | This is done when there is an error or a signal. */ | |
2020 | ||
2021 | void | |
fba45db2 | 2022 | disable_display (int num) |
c906108c | 2023 | { |
52f0bd74 | 2024 | struct display *d; |
c906108c SS |
2025 | |
2026 | for (d = display_chain; d; d = d->next) | |
2027 | if (d->number == num) | |
2028 | { | |
b5de0fa7 | 2029 | d->enabled_p = 0; |
c906108c SS |
2030 | return; |
2031 | } | |
a3f17187 | 2032 | printf_unfiltered (_("No display number %d.\n"), num); |
c906108c | 2033 | } |
c5aa993b | 2034 | |
c906108c | 2035 | void |
fba45db2 | 2036 | disable_current_display (void) |
c906108c SS |
2037 | { |
2038 | if (current_display_number >= 0) | |
2039 | { | |
2040 | disable_display (current_display_number); | |
3e43a32a MS |
2041 | fprintf_unfiltered (gdb_stderr, |
2042 | _("Disabling display %d to " | |
2043 | "avoid infinite recursion.\n"), | |
c5aa993b | 2044 | current_display_number); |
c906108c SS |
2045 | } |
2046 | current_display_number = -1; | |
2047 | } | |
2048 | ||
2049 | static void | |
1d12d88f | 2050 | info_display_command (const char *ignore, int from_tty) |
c906108c | 2051 | { |
52f0bd74 | 2052 | struct display *d; |
c906108c SS |
2053 | |
2054 | if (!display_chain) | |
a3f17187 | 2055 | printf_unfiltered (_("There are no auto-display expressions now.\n")); |
c906108c | 2056 | else |
a3f17187 AC |
2057 | printf_filtered (_("Auto-display expressions now in effect:\n\ |
2058 | Num Enb Expression\n")); | |
c906108c SS |
2059 | |
2060 | for (d = display_chain; d; d = d->next) | |
2061 | { | |
b5de0fa7 | 2062 | printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]); |
c906108c SS |
2063 | if (d->format.size) |
2064 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
c5aa993b | 2065 | d->format.format); |
c906108c SS |
2066 | else if (d->format.format) |
2067 | printf_filtered ("/%c ", d->format.format); | |
fa8a61dc | 2068 | puts_filtered (d->exp_string); |
ae767bfb | 2069 | if (d->block && !contained_in (get_selected_block (0), d->block)) |
a3f17187 | 2070 | printf_filtered (_(" (cannot be evaluated in the current context)")); |
c906108c SS |
2071 | printf_filtered ("\n"); |
2072 | gdb_flush (gdb_stdout); | |
2073 | } | |
2074 | } | |
2075 | ||
c9174737 PA |
2076 | /* Callback fo map_display_numbers, that enables or disables the |
2077 | passed in display D. */ | |
2078 | ||
c906108c | 2079 | static void |
c9174737 | 2080 | do_enable_disable_display (struct display *d, void *data) |
c906108c | 2081 | { |
c9174737 PA |
2082 | d->enabled_p = *(int *) data; |
2083 | } | |
c906108c | 2084 | |
c9174737 PA |
2085 | /* Implamentation of both the "disable display" and "enable display" |
2086 | commands. ENABLE decides what to do. */ | |
2087 | ||
2088 | static void | |
77763700 | 2089 | enable_disable_display_command (const char *args, int from_tty, int enable) |
c9174737 PA |
2090 | { |
2091 | if (args == NULL) | |
c906108c | 2092 | { |
c9174737 | 2093 | struct display *d; |
c5aa993b | 2094 | |
c9174737 PA |
2095 | ALL_DISPLAYS (d) |
2096 | d->enabled_p = enable; | |
2097 | return; | |
2098 | } | |
c5aa993b | 2099 | |
c9174737 | 2100 | map_display_numbers (args, do_enable_disable_display, &enable); |
c906108c SS |
2101 | } |
2102 | ||
c9174737 PA |
2103 | /* The "enable display" command. */ |
2104 | ||
c906108c | 2105 | static void |
77763700 | 2106 | enable_display_command (const char *args, int from_tty) |
c906108c | 2107 | { |
c9174737 PA |
2108 | enable_disable_display_command (args, from_tty, 1); |
2109 | } | |
c5aa993b | 2110 | |
c9174737 | 2111 | /* The "disable display" command. */ |
c906108c | 2112 | |
c9174737 | 2113 | static void |
77763700 | 2114 | disable_display_command (const char *args, int from_tty) |
c9174737 PA |
2115 | { |
2116 | enable_disable_display_command (args, from_tty, 0); | |
c906108c | 2117 | } |
a3247a22 | 2118 | |
a3247a22 PP |
2119 | /* display_chain items point to blocks and expressions. Some expressions in |
2120 | turn may point to symbols. | |
2121 | Both symbols and blocks are obstack_alloc'd on objfile_stack, and are | |
2122 | obstack_free'd when a shared library is unloaded. | |
2123 | Clear pointers that are about to become dangling. | |
2124 | Both .exp and .block fields will be restored next time we need to display | |
2125 | an item by re-parsing .exp_string field in the new execution context. */ | |
2126 | ||
2127 | static void | |
63644780 | 2128 | clear_dangling_display_expressions (struct objfile *objfile) |
a3247a22 PP |
2129 | { |
2130 | struct display *d; | |
63644780 | 2131 | struct program_space *pspace; |
a3247a22 | 2132 | |
c0201579 JK |
2133 | /* With no symbol file we cannot have a block or expression from it. */ |
2134 | if (objfile == NULL) | |
2135 | return; | |
63644780 | 2136 | pspace = objfile->pspace; |
c0201579 | 2137 | if (objfile->separate_debug_objfile_backlink) |
63644780 NB |
2138 | { |
2139 | objfile = objfile->separate_debug_objfile_backlink; | |
2140 | gdb_assert (objfile->pspace == pspace); | |
2141 | } | |
c0201579 JK |
2142 | |
2143 | for (d = display_chain; d != NULL; d = d->next) | |
a3247a22 | 2144 | { |
63644780 | 2145 | if (d->pspace != pspace) |
c0201579 JK |
2146 | continue; |
2147 | ||
2148 | if (lookup_objfile_from_block (d->block) == objfile | |
4d01a485 | 2149 | || (d->exp != NULL && exp_uses_objfile (d->exp.get (), objfile))) |
c0201579 | 2150 | { |
4d01a485 | 2151 | d->exp.reset (); |
c0201579 JK |
2152 | d->block = NULL; |
2153 | } | |
a3247a22 PP |
2154 | } |
2155 | } | |
c906108c | 2156 | \f |
c5aa993b | 2157 | |
675dcf4f | 2158 | /* Print the value in stack frame FRAME of a variable specified by a |
aad95b57 TT |
2159 | struct symbol. NAME is the name to print; if NULL then VAR's print |
2160 | name will be used. STREAM is the ui_file on which to print the | |
2161 | value. INDENT specifies the number of indent levels to print | |
8f043999 JK |
2162 | before printing the variable name. |
2163 | ||
2164 | This function invalidates FRAME. */ | |
c906108c SS |
2165 | |
2166 | void | |
aad95b57 TT |
2167 | print_variable_and_value (const char *name, struct symbol *var, |
2168 | struct frame_info *frame, | |
2169 | struct ui_file *stream, int indent) | |
c906108c | 2170 | { |
c906108c | 2171 | |
aad95b57 TT |
2172 | if (!name) |
2173 | name = SYMBOL_PRINT_NAME (var); | |
2174 | ||
80ae2043 TT |
2175 | fputs_filtered (n_spaces (2 * indent), stream); |
2176 | fputs_styled (name, variable_name_style.style (), stream); | |
2177 | fputs_filtered (" = ", stream); | |
2178 | ||
492d29ea | 2179 | TRY |
0f6a939d PM |
2180 | { |
2181 | struct value *val; | |
2182 | struct value_print_options opts; | |
aad95b57 | 2183 | |
63e43d3a PMR |
2184 | /* READ_VAR_VALUE needs a block in order to deal with non-local |
2185 | references (i.e. to handle nested functions). In this context, we | |
2186 | print variables that are local to this frame, so we can avoid passing | |
2187 | a block to it. */ | |
2188 | val = read_var_value (var, NULL, frame); | |
0f6a939d | 2189 | get_user_print_options (&opts); |
3343315b | 2190 | opts.deref_ref = 1; |
0f6a939d | 2191 | common_val_print (val, stream, indent, &opts, current_language); |
8f043999 JK |
2192 | |
2193 | /* common_val_print invalidates FRAME when a pretty printer calls inferior | |
2194 | function. */ | |
2195 | frame = NULL; | |
0f6a939d | 2196 | } |
492d29ea PA |
2197 | CATCH (except, RETURN_MASK_ERROR) |
2198 | { | |
2199 | fprintf_filtered(stream, "<error reading variable %s (%s)>", name, | |
2200 | except.message); | |
2201 | } | |
2202 | END_CATCH | |
2203 | ||
aad95b57 | 2204 | fprintf_filtered (stream, "\n"); |
c906108c SS |
2205 | } |
2206 | ||
c2792f5a DE |
2207 | /* Subroutine of ui_printf to simplify it. |
2208 | Print VALUE to STREAM using FORMAT. | |
e12f57ab | 2209 | VALUE is a C-style string on the target. */ |
c2792f5a DE |
2210 | |
2211 | static void | |
2212 | printf_c_string (struct ui_file *stream, const char *format, | |
2213 | struct value *value) | |
2214 | { | |
2215 | gdb_byte *str; | |
2216 | CORE_ADDR tem; | |
2217 | int j; | |
2218 | ||
2219 | tem = value_as_address (value); | |
3ae9ce5d TT |
2220 | if (tem == 0) |
2221 | { | |
af39b1c2 SM |
2222 | DIAGNOSTIC_PUSH |
2223 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
3ae9ce5d | 2224 | fprintf_filtered (stream, format, "(null)"); |
af39b1c2 | 2225 | DIAGNOSTIC_POP |
3ae9ce5d TT |
2226 | return; |
2227 | } | |
c2792f5a DE |
2228 | |
2229 | /* This is a %s argument. Find the length of the string. */ | |
2230 | for (j = 0;; j++) | |
2231 | { | |
2232 | gdb_byte c; | |
2233 | ||
2234 | QUIT; | |
2235 | read_memory (tem + j, &c, 1); | |
2236 | if (c == 0) | |
2237 | break; | |
2238 | } | |
2239 | ||
2240 | /* Copy the string contents into a string inside GDB. */ | |
2241 | str = (gdb_byte *) alloca (j + 1); | |
2242 | if (j != 0) | |
2243 | read_memory (tem, str, j); | |
2244 | str[j] = 0; | |
2245 | ||
af39b1c2 SM |
2246 | DIAGNOSTIC_PUSH |
2247 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2248 | fprintf_filtered (stream, format, (char *) str); |
af39b1c2 | 2249 | DIAGNOSTIC_POP |
c2792f5a DE |
2250 | } |
2251 | ||
2252 | /* Subroutine of ui_printf to simplify it. | |
2253 | Print VALUE to STREAM using FORMAT. | |
e12f57ab | 2254 | VALUE is a wide C-style string on the target. */ |
c2792f5a DE |
2255 | |
2256 | static void | |
2257 | printf_wide_c_string (struct ui_file *stream, const char *format, | |
2258 | struct value *value) | |
2259 | { | |
2260 | gdb_byte *str; | |
2261 | CORE_ADDR tem; | |
2262 | int j; | |
2263 | struct gdbarch *gdbarch = get_type_arch (value_type (value)); | |
2264 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
2265 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
2266 | "wchar_t", NULL, 0); | |
2267 | int wcwidth = TYPE_LENGTH (wctype); | |
224c3ddb | 2268 | gdb_byte *buf = (gdb_byte *) alloca (wcwidth); |
c2792f5a DE |
2269 | |
2270 | tem = value_as_address (value); | |
3ae9ce5d TT |
2271 | if (tem == 0) |
2272 | { | |
af39b1c2 SM |
2273 | DIAGNOSTIC_PUSH |
2274 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
3ae9ce5d | 2275 | fprintf_filtered (stream, format, "(null)"); |
af39b1c2 | 2276 | DIAGNOSTIC_POP |
3ae9ce5d TT |
2277 | return; |
2278 | } | |
c2792f5a DE |
2279 | |
2280 | /* This is a %s argument. Find the length of the string. */ | |
2281 | for (j = 0;; j += wcwidth) | |
2282 | { | |
2283 | QUIT; | |
2284 | read_memory (tem + j, buf, wcwidth); | |
2285 | if (extract_unsigned_integer (buf, wcwidth, byte_order) == 0) | |
2286 | break; | |
2287 | } | |
2288 | ||
2289 | /* Copy the string contents into a string inside GDB. */ | |
2290 | str = (gdb_byte *) alloca (j + wcwidth); | |
2291 | if (j != 0) | |
2292 | read_memory (tem, str, j); | |
2293 | memset (&str[j], 0, wcwidth); | |
2294 | ||
8268c778 | 2295 | auto_obstack output; |
c2792f5a DE |
2296 | |
2297 | convert_between_encodings (target_wide_charset (gdbarch), | |
2298 | host_charset (), | |
2299 | str, j, wcwidth, | |
2300 | &output, translit_char); | |
2301 | obstack_grow_str0 (&output, ""); | |
2302 | ||
af39b1c2 SM |
2303 | DIAGNOSTIC_PUSH |
2304 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2305 | fprintf_filtered (stream, format, obstack_base (&output)); |
af39b1c2 | 2306 | DIAGNOSTIC_POP |
c2792f5a DE |
2307 | } |
2308 | ||
2309 | /* Subroutine of ui_printf to simplify it. | |
16e812b2 | 2310 | Print VALUE, a floating point value, to STREAM using FORMAT. */ |
c2792f5a DE |
2311 | |
2312 | static void | |
16e812b2 UW |
2313 | printf_floating (struct ui_file *stream, const char *format, |
2314 | struct value *value, enum argclass argclass) | |
c2792f5a | 2315 | { |
c2792f5a DE |
2316 | /* Parameter data. */ |
2317 | struct type *param_type = value_type (value); | |
2318 | struct gdbarch *gdbarch = get_type_arch (param_type); | |
c2792f5a | 2319 | |
16e812b2 UW |
2320 | /* Determine target type corresponding to the format string. */ |
2321 | struct type *fmt_type; | |
2322 | switch (argclass) | |
c2792f5a | 2323 | { |
16e812b2 UW |
2324 | case double_arg: |
2325 | fmt_type = builtin_type (gdbarch)->builtin_double; | |
2326 | break; | |
2327 | case long_double_arg: | |
2328 | fmt_type = builtin_type (gdbarch)->builtin_long_double; | |
2329 | break; | |
2330 | case dec32float_arg: | |
2331 | fmt_type = builtin_type (gdbarch)->builtin_decfloat; | |
2332 | break; | |
2333 | case dec64float_arg: | |
2334 | fmt_type = builtin_type (gdbarch)->builtin_decdouble; | |
2335 | break; | |
2336 | case dec128float_arg: | |
2337 | fmt_type = builtin_type (gdbarch)->builtin_declong; | |
2338 | break; | |
2339 | default: | |
2340 | gdb_assert_not_reached ("unexpected argument class"); | |
c2792f5a DE |
2341 | } |
2342 | ||
16e812b2 UW |
2343 | /* To match the traditional GDB behavior, the conversion is |
2344 | done differently depending on the type of the parameter: | |
2345 | ||
2346 | - if the parameter has floating-point type, it's value | |
2347 | is converted to the target type; | |
2348 | ||
2349 | - otherwise, if the parameter has a type that is of the | |
2350 | same size as a built-in floating-point type, the value | |
2351 | bytes are interpreted as if they were of that type, and | |
2352 | then converted to the target type (this is not done for | |
2353 | decimal floating-point argument classes); | |
2354 | ||
2355 | - otherwise, if the source value has an integer value, | |
2356 | it's value is converted to the target type; | |
c2792f5a | 2357 | |
16e812b2 | 2358 | - otherwise, an error is raised. |
c2792f5a | 2359 | |
16e812b2 UW |
2360 | In either case, the result of the conversion is a byte buffer |
2361 | formatted in the target format for the target type. */ | |
2362 | ||
2363 | if (TYPE_CODE (fmt_type) == TYPE_CODE_FLT) | |
2364 | { | |
2365 | param_type = float_type_from_length (param_type); | |
2366 | if (param_type != value_type (value)) | |
2367 | value = value_from_contents (param_type, value_contents (value)); | |
2368 | } | |
2369 | ||
2370 | value = value_cast (fmt_type, value); | |
c2792f5a | 2371 | |
3b4b2f16 | 2372 | /* Convert the value to a string and print it. */ |
f69fdf9b UW |
2373 | std::string str |
2374 | = target_float_to_string (value_contents (value), fmt_type, format); | |
3b4b2f16 | 2375 | fputs_filtered (str.c_str (), stream); |
c2792f5a DE |
2376 | } |
2377 | ||
2378 | /* Subroutine of ui_printf to simplify it. | |
2379 | Print VALUE, a target pointer, to STREAM using FORMAT. */ | |
2380 | ||
2381 | static void | |
2382 | printf_pointer (struct ui_file *stream, const char *format, | |
2383 | struct value *value) | |
2384 | { | |
2385 | /* We avoid the host's %p because pointers are too | |
2386 | likely to be the wrong size. The only interesting | |
2387 | modifier for %p is a width; extract that, and then | |
2388 | handle %p as glibc would: %#x or a literal "(nil)". */ | |
2389 | ||
2390 | const char *p; | |
2391 | char *fmt, *fmt_p; | |
2392 | #ifdef PRINTF_HAS_LONG_LONG | |
2393 | long long val = value_as_long (value); | |
2394 | #else | |
2395 | long val = value_as_long (value); | |
2396 | #endif | |
2397 | ||
224c3ddb | 2398 | fmt = (char *) alloca (strlen (format) + 5); |
c2792f5a DE |
2399 | |
2400 | /* Copy up to the leading %. */ | |
2401 | p = format; | |
2402 | fmt_p = fmt; | |
2403 | while (*p) | |
2404 | { | |
2405 | int is_percent = (*p == '%'); | |
2406 | ||
2407 | *fmt_p++ = *p++; | |
2408 | if (is_percent) | |
2409 | { | |
2410 | if (*p == '%') | |
2411 | *fmt_p++ = *p++; | |
2412 | else | |
2413 | break; | |
2414 | } | |
2415 | } | |
2416 | ||
2417 | if (val != 0) | |
2418 | *fmt_p++ = '#'; | |
2419 | ||
b8c2339b TT |
2420 | /* Copy any width or flags. Only the "-" flag is valid for pointers |
2421 | -- see the format_pieces constructor. */ | |
2422 | while (*p == '-' || (*p >= '0' && *p < '9')) | |
c2792f5a DE |
2423 | *fmt_p++ = *p++; |
2424 | ||
2425 | gdb_assert (*p == 'p' && *(p + 1) == '\0'); | |
2426 | if (val != 0) | |
2427 | { | |
2428 | #ifdef PRINTF_HAS_LONG_LONG | |
2429 | *fmt_p++ = 'l'; | |
2430 | #endif | |
2431 | *fmt_p++ = 'l'; | |
2432 | *fmt_p++ = 'x'; | |
2433 | *fmt_p++ = '\0'; | |
af39b1c2 SM |
2434 | DIAGNOSTIC_PUSH |
2435 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2436 | fprintf_filtered (stream, fmt, val); |
af39b1c2 | 2437 | DIAGNOSTIC_POP |
c2792f5a DE |
2438 | } |
2439 | else | |
2440 | { | |
2441 | *fmt_p++ = 's'; | |
2442 | *fmt_p++ = '\0'; | |
af39b1c2 SM |
2443 | DIAGNOSTIC_PUSH |
2444 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2445 | fprintf_filtered (stream, fmt, "(nil)"); |
af39b1c2 | 2446 | DIAGNOSTIC_POP |
c2792f5a DE |
2447 | } |
2448 | } | |
2449 | ||
a04b0428 JB |
2450 | /* printf "printf format string" ARG to STREAM. */ |
2451 | ||
2452 | static void | |
bbc13ae3 | 2453 | ui_printf (const char *arg, struct ui_file *stream) |
c906108c | 2454 | { |
bbc13ae3 | 2455 | const char *s = arg; |
8e481c3b | 2456 | std::vector<struct value *> val_args; |
c906108c SS |
2457 | |
2458 | if (s == 0) | |
e2e0b3e5 | 2459 | error_no_arg (_("format-control string and values to print")); |
c906108c | 2460 | |
f1735a53 | 2461 | s = skip_spaces (s); |
c906108c | 2462 | |
675dcf4f | 2463 | /* A format string should follow, enveloped in double quotes. */ |
c906108c | 2464 | if (*s++ != '"') |
8a3fe4f8 | 2465 | error (_("Bad format string, missing '\"'.")); |
c906108c | 2466 | |
8e481c3b | 2467 | format_pieces fpieces (&s); |
c906108c | 2468 | |
d3ce09f5 SS |
2469 | if (*s++ != '"') |
2470 | error (_("Bad format string, non-terminated '\"'.")); | |
2471 | ||
f1735a53 | 2472 | s = skip_spaces (s); |
c906108c SS |
2473 | |
2474 | if (*s != ',' && *s != 0) | |
8a3fe4f8 | 2475 | error (_("Invalid argument syntax")); |
c906108c | 2476 | |
c5aa993b JM |
2477 | if (*s == ',') |
2478 | s++; | |
f1735a53 | 2479 | s = skip_spaces (s); |
c906108c | 2480 | |
c906108c | 2481 | { |
c906108c | 2482 | int nargs_wanted; |
8e481c3b TT |
2483 | int i; |
2484 | const char *current_substring; | |
c906108c | 2485 | |
c906108c | 2486 | nargs_wanted = 0; |
8e481c3b TT |
2487 | for (auto &&piece : fpieces) |
2488 | if (piece.argclass != literal_piece) | |
d3ce09f5 | 2489 | ++nargs_wanted; |
c906108c SS |
2490 | |
2491 | /* Now, parse all arguments and evaluate them. | |
2492 | Store the VALUEs in VAL_ARGS. */ | |
2493 | ||
2494 | while (*s != '\0') | |
2495 | { | |
bbc13ae3 | 2496 | const char *s1; |
ad3bbd48 | 2497 | |
a04b0428 | 2498 | s1 = s; |
8e481c3b | 2499 | val_args.push_back (parse_to_comma_and_eval (&s1)); |
c5aa993b | 2500 | |
c906108c SS |
2501 | s = s1; |
2502 | if (*s == ',') | |
2503 | s++; | |
2504 | } | |
c5aa993b | 2505 | |
8e481c3b | 2506 | if (val_args.size () != nargs_wanted) |
8a3fe4f8 | 2507 | error (_("Wrong number of arguments for specified format-string")); |
c906108c SS |
2508 | |
2509 | /* Now actually print them. */ | |
d3ce09f5 | 2510 | i = 0; |
8e481c3b | 2511 | for (auto &&piece : fpieces) |
c906108c | 2512 | { |
8e481c3b TT |
2513 | current_substring = piece.string; |
2514 | switch (piece.argclass) | |
c906108c SS |
2515 | { |
2516 | case string_arg: | |
c2792f5a | 2517 | printf_c_string (stream, current_substring, val_args[i]); |
c906108c | 2518 | break; |
6c7a06a3 | 2519 | case wide_string_arg: |
c2792f5a | 2520 | printf_wide_c_string (stream, current_substring, val_args[i]); |
6c7a06a3 TT |
2521 | break; |
2522 | case wide_char_arg: | |
2523 | { | |
50810684 UW |
2524 | struct gdbarch *gdbarch |
2525 | = get_type_arch (value_type (val_args[i])); | |
2526 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
e6c014f2 | 2527 | "wchar_t", NULL, 0); |
6c7a06a3 | 2528 | struct type *valtype; |
6c7a06a3 TT |
2529 | const gdb_byte *bytes; |
2530 | ||
2531 | valtype = value_type (val_args[i]); | |
2532 | if (TYPE_LENGTH (valtype) != TYPE_LENGTH (wctype) | |
2533 | || TYPE_CODE (valtype) != TYPE_CODE_INT) | |
2534 | error (_("expected wchar_t argument for %%lc")); | |
2535 | ||
2536 | bytes = value_contents (val_args[i]); | |
2537 | ||
8268c778 | 2538 | auto_obstack output; |
6c7a06a3 | 2539 | |
f870a310 | 2540 | convert_between_encodings (target_wide_charset (gdbarch), |
6c7a06a3 TT |
2541 | host_charset (), |
2542 | bytes, TYPE_LENGTH (valtype), | |
2543 | TYPE_LENGTH (valtype), | |
2544 | &output, translit_char); | |
2545 | obstack_grow_str0 (&output, ""); | |
2546 | ||
af39b1c2 SM |
2547 | DIAGNOSTIC_PUSH |
2548 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 HZ |
2549 | fprintf_filtered (stream, current_substring, |
2550 | obstack_base (&output)); | |
af39b1c2 | 2551 | DIAGNOSTIC_POP |
6c7a06a3 TT |
2552 | } |
2553 | break; | |
c906108c | 2554 | case long_long_arg: |
74a0d9f6 | 2555 | #ifdef PRINTF_HAS_LONG_LONG |
c906108c SS |
2556 | { |
2557 | long long val = value_as_long (val_args[i]); | |
ad3bbd48 | 2558 | |
af39b1c2 SM |
2559 | DIAGNOSTIC_PUSH |
2560 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2561 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2562 | DIAGNOSTIC_POP |
c906108c SS |
2563 | break; |
2564 | } | |
2565 | #else | |
8a3fe4f8 | 2566 | error (_("long long not supported in printf")); |
c906108c SS |
2567 | #endif |
2568 | case int_arg: | |
2569 | { | |
46e9880c | 2570 | int val = value_as_long (val_args[i]); |
ad3bbd48 | 2571 | |
af39b1c2 SM |
2572 | DIAGNOSTIC_PUSH |
2573 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2574 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2575 | DIAGNOSTIC_POP |
46e9880c DJ |
2576 | break; |
2577 | } | |
2578 | case long_arg: | |
2579 | { | |
c906108c | 2580 | long val = value_as_long (val_args[i]); |
ad3bbd48 | 2581 | |
af39b1c2 SM |
2582 | DIAGNOSTIC_PUSH |
2583 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2584 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2585 | DIAGNOSTIC_POP |
c906108c SS |
2586 | break; |
2587 | } | |
16e812b2 UW |
2588 | /* Handles floating-point values. */ |
2589 | case double_arg: | |
2590 | case long_double_arg: | |
2591 | case dec32float_arg: | |
2592 | case dec64float_arg: | |
2593 | case dec128float_arg: | |
2594 | printf_floating (stream, current_substring, val_args[i], | |
8e481c3b | 2595 | piece.argclass); |
c2792f5a | 2596 | break; |
2025a643 | 2597 | case ptr_arg: |
c2792f5a DE |
2598 | printf_pointer (stream, current_substring, val_args[i]); |
2599 | break; | |
d3ce09f5 SS |
2600 | case literal_piece: |
2601 | /* Print a portion of the format string that has no | |
2602 | directives. Note that this will not include any | |
2603 | ordinary %-specs, but it might include "%%". That is | |
2604 | why we use printf_filtered and not puts_filtered here. | |
2605 | Also, we pass a dummy argument because some platforms | |
2606 | have modified GCC to include -Wformat-security by | |
2607 | default, which will warn here if there is no | |
2608 | argument. */ | |
af39b1c2 SM |
2609 | DIAGNOSTIC_PUSH |
2610 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
d3ce09f5 | 2611 | fprintf_filtered (stream, current_substring, 0); |
af39b1c2 | 2612 | DIAGNOSTIC_POP |
d3ce09f5 | 2613 | break; |
675dcf4f MK |
2614 | default: |
2615 | internal_error (__FILE__, __LINE__, | |
2025a643 | 2616 | _("failed internal consistency check")); |
c906108c | 2617 | } |
d3ce09f5 | 2618 | /* Maybe advance to the next argument. */ |
8e481c3b | 2619 | if (piece.argclass != literal_piece) |
d3ce09f5 | 2620 | ++i; |
c906108c | 2621 | } |
c906108c | 2622 | } |
c906108c | 2623 | } |
c906108c | 2624 | |
f1421989 HZ |
2625 | /* Implement the "printf" command. */ |
2626 | ||
a04b0428 | 2627 | static void |
0b39b52e | 2628 | printf_command (const char *arg, int from_tty) |
f1421989 | 2629 | { |
a04b0428 | 2630 | ui_printf (arg, gdb_stdout); |
ef1dfa36 TT |
2631 | reset_terminal_style (gdb_stdout); |
2632 | wrap_here (""); | |
50b34a18 | 2633 | gdb_flush (gdb_stdout); |
f1421989 HZ |
2634 | } |
2635 | ||
2636 | /* Implement the "eval" command. */ | |
2637 | ||
2638 | static void | |
0b39b52e | 2639 | eval_command (const char *arg, int from_tty) |
f1421989 | 2640 | { |
d7e74731 | 2641 | string_file stb; |
f1421989 | 2642 | |
d7e74731 | 2643 | ui_printf (arg, &stb); |
f1421989 | 2644 | |
d7e74731 | 2645 | std::string expanded = insert_user_defined_cmd_args (stb.c_str ()); |
01770bbd | 2646 | |
95a6b0a1 | 2647 | execute_command (expanded.c_str (), from_tty); |
f1421989 HZ |
2648 | } |
2649 | ||
c906108c | 2650 | void |
fba45db2 | 2651 | _initialize_printcmd (void) |
c906108c | 2652 | { |
c94fdfd0 EZ |
2653 | struct cmd_list_element *c; |
2654 | ||
c906108c SS |
2655 | current_display_number = -1; |
2656 | ||
76727919 | 2657 | gdb::observers::free_objfile.attach (clear_dangling_display_expressions); |
a3247a22 | 2658 | |
11db9430 | 2659 | add_info ("address", info_address_command, |
1bedd215 | 2660 | _("Describe where symbol SYM is stored.")); |
c906108c | 2661 | |
11db9430 | 2662 | add_info ("symbol", info_symbol_command, _("\ |
1bedd215 AC |
2663 | Describe what symbol is at location ADDR.\n\ |
2664 | Only for symbols with fixed locations (global or static scope).")); | |
c906108c | 2665 | |
1bedd215 AC |
2666 | add_com ("x", class_vars, x_command, _("\ |
2667 | Examine memory: x/FMT ADDRESS.\n\ | |
c906108c SS |
2668 | ADDRESS is an expression for the memory address to examine.\n\ |
2669 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2670 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
6fbe845e AB |
2671 | t(binary), f(float), a(address), i(instruction), c(char), s(string)\n\ |
2672 | and z(hex, zero padded on the left).\n\ | |
1bedd215 | 2673 | Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ |
c906108c | 2674 | The specified number of objects of the specified size are printed\n\ |
bb556f1f TK |
2675 | according to the format. If a negative number is specified, memory is\n\ |
2676 | examined backward from the address.\n\n\ | |
c906108c SS |
2677 | Defaults for format and size letters are those previously used.\n\ |
2678 | Default count is 1. Default address is following last thing printed\n\ | |
1bedd215 | 2679 | with this command or \"print\".")); |
c906108c | 2680 | |
c906108c SS |
2681 | #if 0 |
2682 | add_com ("whereis", class_vars, whereis_command, | |
1bedd215 | 2683 | _("Print line number and file of definition of variable.")); |
c906108c | 2684 | #endif |
c5aa993b | 2685 | |
11db9430 | 2686 | add_info ("display", info_display_command, _("\ |
1bedd215 | 2687 | Expressions to display when program stops, with code numbers.")); |
c906108c | 2688 | |
1a966eab AC |
2689 | add_cmd ("undisplay", class_vars, undisplay_command, _("\ |
2690 | Cancel some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2691 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2692 | No argument means cancel all automatic-display expressions.\n\ | |
2693 | \"delete display\" has the same effect as this command.\n\ | |
1a966eab | 2694 | Do \"info display\" to see current list of code numbers."), |
c5aa993b | 2695 | &cmdlist); |
c906108c | 2696 | |
1bedd215 AC |
2697 | add_com ("display", class_vars, display_command, _("\ |
2698 | Print value of expression EXP each time the program stops.\n\ | |
c906108c SS |
2699 | /FMT may be used before EXP as in the \"print\" command.\n\ |
2700 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2701 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2702 | and examining is done as in the \"x\" command.\n\n\ | |
2703 | With no argument, display all currently requested auto-display expressions.\n\ | |
1bedd215 | 2704 | Use \"undisplay\" to cancel display requests previously made.")); |
c906108c | 2705 | |
c9174737 | 2706 | add_cmd ("display", class_vars, enable_display_command, _("\ |
1a966eab | 2707 | Enable some expressions to be displayed when program stops.\n\ |
c906108c SS |
2708 | Arguments are the code numbers of the expressions to resume displaying.\n\ |
2709 | No argument means enable all automatic-display expressions.\n\ | |
1a966eab | 2710 | Do \"info display\" to see current list of code numbers."), &enablelist); |
c906108c | 2711 | |
1a966eab AC |
2712 | add_cmd ("display", class_vars, disable_display_command, _("\ |
2713 | Disable some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2714 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2715 | No argument means disable all automatic-display expressions.\n\ | |
1a966eab | 2716 | Do \"info display\" to see current list of code numbers."), &disablelist); |
c906108c | 2717 | |
1a966eab AC |
2718 | add_cmd ("display", class_vars, undisplay_command, _("\ |
2719 | Cancel some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2720 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2721 | No argument means cancel all automatic-display expressions.\n\ | |
1a966eab | 2722 | Do \"info display\" to see current list of code numbers."), &deletelist); |
c906108c | 2723 | |
1bedd215 | 2724 | add_com ("printf", class_vars, printf_command, _("\ |
80ae639d TT |
2725 | Formatted printing, like the C \"printf\" function.\n\ |
2726 | Usage: printf \"format string\", arg1, arg2, arg3, ..., argn\n\ | |
2727 | This supports most C printf format specifications, like %s, %d, etc.")); | |
c906108c | 2728 | |
1bedd215 AC |
2729 | add_com ("output", class_vars, output_command, _("\ |
2730 | Like \"print\" but don't put in value history and don't print newline.\n\ | |
2731 | This is useful in user-defined commands.")); | |
c906108c | 2732 | |
1bedd215 AC |
2733 | add_prefix_cmd ("set", class_vars, set_command, _("\ |
2734 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2735 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2736 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2737 | with $), a register (a few standard names starting with $), or an actual\n\ | |
1bedd215 AC |
2738 | variable in the program being debugged. EXP is any valid expression.\n\ |
2739 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
2740 | \n\ | |
2741 | With a subcommand, this command modifies parts of the gdb environment.\n\ | |
2742 | You can see these environment settings with the \"show\" command."), | |
c5aa993b | 2743 | &setlist, "set ", 1, &cmdlist); |
c906108c | 2744 | if (dbx_commands) |
0b39b52e | 2745 | add_com ("assign", class_vars, set_command, _("\ |
1bedd215 | 2746 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ |
c906108c SS |
2747 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2748 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2749 | with $), a register (a few standard names starting with $), or an actual\n\ | |
1bedd215 AC |
2750 | variable in the program being debugged. EXP is any valid expression.\n\ |
2751 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
c906108c | 2752 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
1bedd215 | 2753 | You can see these environment settings with the \"show\" command.")); |
c906108c | 2754 | |
0df8b418 | 2755 | /* "call" is the same as "set", but handy for dbx users to call fns. */ |
1bedd215 AC |
2756 | c = add_com ("call", class_vars, call_command, _("\ |
2757 | Call a function in the program.\n\ | |
c906108c SS |
2758 | The argument is the function name and arguments, in the notation of the\n\ |
2759 | current working language. The result is printed and saved in the value\n\ | |
1bedd215 | 2760 | history, if it is not void.")); |
65d12d83 | 2761 | set_cmd_completer (c, expression_completer); |
c906108c | 2762 | |
1a966eab AC |
2763 | add_cmd ("variable", class_vars, set_command, _("\ |
2764 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2765 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2766 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2767 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2768 | variable in the program being debugged. EXP is any valid expression.\n\ | |
1a966eab | 2769 | This may usually be abbreviated to simply \"set\"."), |
c5aa993b | 2770 | &setlist); |
3fcded8f | 2771 | add_alias_cmd ("var", "variable", class_vars, 0, &setlist); |
c906108c | 2772 | |
1bedd215 AC |
2773 | c = add_com ("print", class_vars, print_command, _("\ |
2774 | Print value of expression EXP.\n\ | |
c906108c SS |
2775 | Variables accessible are those of the lexical environment of the selected\n\ |
2776 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2777 | \n\ | |
2778 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2779 | $$NUM refers to NUM'th value back from the last one.\n\ | |
1bedd215 AC |
2780 | Names starting with $ refer to registers (with the values they would have\n\ |
2781 | if the program were to return to the stack frame now selected, restoring\n\ | |
c906108c SS |
2782 | all registers saved by frames farther in) or else to debugger\n\ |
2783 | \"convenience\" variables (any such name not a known register).\n\ | |
1bedd215 AC |
2784 | Use assignment expressions to give values to convenience variables.\n\ |
2785 | \n\ | |
c906108c SS |
2786 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ |
2787 | @ is a binary operator for treating consecutive data objects\n\ | |
2788 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2789 | element is FOO, whose second element is stored in the space following\n\ | |
2790 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
1bedd215 AC |
2791 | resides in memory.\n\ |
2792 | \n\ | |
c906108c | 2793 | EXP may be preceded with /FMT, where FMT is a format letter\n\ |
1bedd215 | 2794 | but no count or size letter (see \"x\" command).")); |
65d12d83 | 2795 | set_cmd_completer (c, expression_completer); |
c906108c | 2796 | add_com_alias ("p", "print", class_vars, 1); |
e93a8774 | 2797 | add_com_alias ("inspect", "print", class_vars, 1); |
c906108c | 2798 | |
35096d9d AC |
2799 | add_setshow_uinteger_cmd ("max-symbolic-offset", no_class, |
2800 | &max_symbolic_offset, _("\ | |
2801 | Set the largest offset that will be printed in <symbol+1234> form."), _("\ | |
f81d1120 PA |
2802 | Show the largest offset that will be printed in <symbol+1234> form."), _("\ |
2803 | Tell GDB to only display the symbolic form of an address if the\n\ | |
2804 | offset between the closest earlier symbol and the address is less than\n\ | |
2805 | the specified maximum offset. The default is \"unlimited\", which tells GDB\n\ | |
2806 | to always print the symbolic form of an address if any symbol precedes\n\ | |
2807 | it. Zero is equivalent to \"unlimited\"."), | |
35096d9d | 2808 | NULL, |
920d2a44 | 2809 | show_max_symbolic_offset, |
35096d9d | 2810 | &setprintlist, &showprintlist); |
5bf193a2 AC |
2811 | add_setshow_boolean_cmd ("symbol-filename", no_class, |
2812 | &print_symbol_filename, _("\ | |
2813 | Set printing of source filename and line number with <symbol>."), _("\ | |
2814 | Show printing of source filename and line number with <symbol>."), NULL, | |
2815 | NULL, | |
920d2a44 | 2816 | show_print_symbol_filename, |
5bf193a2 | 2817 | &setprintlist, &showprintlist); |
f1421989 HZ |
2818 | |
2819 | add_com ("eval", no_class, eval_command, _("\ | |
2820 | Convert \"printf format string\", arg1, arg2, arg3, ..., argn to\n\ | |
2821 | a command line, and call it.")); | |
c906108c | 2822 | } |