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" |
c906108c | 53 | |
c906108c SS |
54 | /* Last specified output format. */ |
55 | ||
a6bac58e | 56 | static char last_format = 0; |
c906108c SS |
57 | |
58 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
59 | ||
60 | static char last_size = 'w'; | |
61 | ||
9be2ae8f TT |
62 | /* Last specified count for the 'x' command. */ |
63 | ||
64 | static int last_count; | |
65 | ||
5d3729b5 | 66 | /* Default address to examine next, and associated architecture. */ |
c906108c | 67 | |
5d3729b5 | 68 | static struct gdbarch *next_gdbarch; |
c906108c SS |
69 | static CORE_ADDR next_address; |
70 | ||
a4642986 MR |
71 | /* Number of delay instructions following current disassembled insn. */ |
72 | ||
73 | static int branch_delay_insns; | |
74 | ||
c906108c SS |
75 | /* Last address examined. */ |
76 | ||
77 | static CORE_ADDR last_examine_address; | |
78 | ||
79 | /* Contents of last address examined. | |
80 | This is not valid past the end of the `x' command! */ | |
81 | ||
9b558729 | 82 | static value_ref_ptr last_examine_value; |
c906108c SS |
83 | |
84 | /* Largest offset between a symbolic value and an address, that will be | |
85 | printed as `0x1234 <symbol+offset>'. */ | |
86 | ||
87 | static unsigned int max_symbolic_offset = UINT_MAX; | |
920d2a44 AC |
88 | static void |
89 | show_max_symbolic_offset (struct ui_file *file, int from_tty, | |
90 | struct cmd_list_element *c, const char *value) | |
91 | { | |
3e43a32a MS |
92 | fprintf_filtered (file, |
93 | _("The largest offset that will be " | |
94 | "printed in <symbol+1234> form is %s.\n"), | |
920d2a44 AC |
95 | value); |
96 | } | |
c906108c SS |
97 | |
98 | /* Append the source filename and linenumber of the symbol when | |
99 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
100 | static int print_symbol_filename = 0; | |
920d2a44 AC |
101 | static void |
102 | show_print_symbol_filename (struct ui_file *file, int from_tty, | |
103 | struct cmd_list_element *c, const char *value) | |
104 | { | |
3e43a32a MS |
105 | fprintf_filtered (file, _("Printing of source filename and " |
106 | "line number with <symbol> is %s.\n"), | |
920d2a44 AC |
107 | value); |
108 | } | |
c906108c SS |
109 | |
110 | /* Number of auto-display expression currently being displayed. | |
9d8fa392 | 111 | So that we can disable it if we get a signal within it. |
c906108c SS |
112 | -1 when not doing one. */ |
113 | ||
5a18e302 | 114 | static int current_display_number; |
c906108c | 115 | |
c906108c | 116 | struct display |
c5aa993b JM |
117 | { |
118 | /* Chain link to next auto-display item. */ | |
119 | struct display *next; | |
6c95b8df | 120 | |
fa8a61dc TT |
121 | /* The expression as the user typed it. */ |
122 | char *exp_string; | |
6c95b8df | 123 | |
c5aa993b | 124 | /* Expression to be evaluated and displayed. */ |
4d01a485 | 125 | expression_up exp; |
6c95b8df | 126 | |
c5aa993b JM |
127 | /* Item number of this auto-display item. */ |
128 | int number; | |
6c95b8df | 129 | |
c5aa993b JM |
130 | /* Display format specified. */ |
131 | struct format_data format; | |
6c95b8df PA |
132 | |
133 | /* Program space associated with `block'. */ | |
134 | struct program_space *pspace; | |
135 | ||
0df8b418 | 136 | /* Innermost block required by this expression when evaluated. */ |
270140bd | 137 | const struct block *block; |
6c95b8df | 138 | |
0df8b418 | 139 | /* Status of this display (enabled or disabled). */ |
b5de0fa7 | 140 | int enabled_p; |
c5aa993b | 141 | }; |
c906108c SS |
142 | |
143 | /* Chain of expressions whose values should be displayed | |
144 | automatically each time the program stops. */ | |
145 | ||
146 | static struct display *display_chain; | |
147 | ||
148 | static int display_number; | |
149 | ||
c9174737 PA |
150 | /* Walk the following statement or block through all displays. |
151 | ALL_DISPLAYS_SAFE does so even if the statement deletes the current | |
152 | display. */ | |
3c3fe74c PA |
153 | |
154 | #define ALL_DISPLAYS(B) \ | |
155 | for (B = display_chain; B; B = B->next) | |
156 | ||
c9174737 PA |
157 | #define ALL_DISPLAYS_SAFE(B,TMP) \ |
158 | for (B = display_chain; \ | |
159 | B ? (TMP = B->next, 1): 0; \ | |
160 | B = TMP) | |
161 | ||
0df8b418 | 162 | /* Prototypes for local functions. */ |
c906108c | 163 | |
a14ed312 | 164 | static void do_one_display (struct display *); |
c906108c | 165 | \f |
c5aa993b | 166 | |
c906108c SS |
167 | /* Decode a format specification. *STRING_PTR should point to it. |
168 | OFORMAT and OSIZE are used as defaults for the format and size | |
169 | if none are given in the format specification. | |
170 | If OSIZE is zero, then the size field of the returned value | |
171 | should be set only if a size is explicitly specified by the | |
172 | user. | |
173 | The structure returned describes all the data | |
174 | found in the specification. In addition, *STRING_PTR is advanced | |
175 | past the specification and past all whitespace following it. */ | |
176 | ||
177 | static struct format_data | |
6f937416 | 178 | decode_format (const char **string_ptr, int oformat, int osize) |
c906108c SS |
179 | { |
180 | struct format_data val; | |
6f937416 | 181 | const char *p = *string_ptr; |
c906108c SS |
182 | |
183 | val.format = '?'; | |
184 | val.size = '?'; | |
185 | val.count = 1; | |
a6bac58e | 186 | val.raw = 0; |
c906108c | 187 | |
bb556f1f TK |
188 | if (*p == '-') |
189 | { | |
190 | val.count = -1; | |
191 | p++; | |
192 | } | |
c906108c | 193 | if (*p >= '0' && *p <= '9') |
bb556f1f | 194 | val.count *= atoi (p); |
c5aa993b JM |
195 | while (*p >= '0' && *p <= '9') |
196 | p++; | |
c906108c SS |
197 | |
198 | /* Now process size or format letters that follow. */ | |
199 | ||
200 | while (1) | |
201 | { | |
202 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
203 | val.size = *p++; | |
a6bac58e TT |
204 | else if (*p == 'r') |
205 | { | |
206 | val.raw = 1; | |
207 | p++; | |
208 | } | |
c906108c SS |
209 | else if (*p >= 'a' && *p <= 'z') |
210 | val.format = *p++; | |
211 | else | |
212 | break; | |
213 | } | |
214 | ||
2f433492 | 215 | *string_ptr = skip_spaces (p); |
c906108c SS |
216 | |
217 | /* Set defaults for format and size if not specified. */ | |
218 | if (val.format == '?') | |
219 | { | |
220 | if (val.size == '?') | |
221 | { | |
222 | /* Neither has been specified. */ | |
223 | val.format = oformat; | |
224 | val.size = osize; | |
225 | } | |
226 | else | |
227 | /* If a size is specified, any format makes a reasonable | |
228 | default except 'i'. */ | |
229 | val.format = oformat == 'i' ? 'x' : oformat; | |
230 | } | |
231 | else if (val.size == '?') | |
232 | switch (val.format) | |
233 | { | |
234 | case 'a': | |
5d3729b5 UW |
235 | /* Pick the appropriate size for an address. This is deferred |
236 | until do_examine when we know the actual architecture to use. | |
237 | A special size value of 'a' is used to indicate this case. */ | |
238 | val.size = osize ? 'a' : osize; | |
c906108c SS |
239 | break; |
240 | case 'f': | |
241 | /* Floating point has to be word or giantword. */ | |
242 | if (osize == 'w' || osize == 'g') | |
243 | val.size = osize; | |
244 | else | |
245 | /* Default it to giantword if the last used size is not | |
246 | appropriate. */ | |
247 | val.size = osize ? 'g' : osize; | |
248 | break; | |
249 | case 'c': | |
250 | /* Characters default to one byte. */ | |
251 | val.size = osize ? 'b' : osize; | |
252 | break; | |
9a22f0d0 | 253 | case 's': |
3e43a32a MS |
254 | /* Display strings with byte size chars unless explicitly |
255 | specified. */ | |
9a22f0d0 PM |
256 | val.size = '\0'; |
257 | break; | |
258 | ||
c906108c SS |
259 | default: |
260 | /* The default is the size most recently specified. */ | |
261 | val.size = osize; | |
262 | } | |
263 | ||
264 | return val; | |
265 | } | |
266 | \f | |
79a45b7d | 267 | /* Print value VAL on stream according to OPTIONS. |
c906108c | 268 | Do not end with a newline. |
c906108c | 269 | SIZE is the letter for the size of datum being printed. |
ea37ba09 DJ |
270 | This is used to pad hex numbers so they line up. SIZE is 0 |
271 | for print / output and set for examine. */ | |
c906108c SS |
272 | |
273 | static void | |
79a45b7d TT |
274 | print_formatted (struct value *val, int size, |
275 | const struct value_print_options *options, | |
fba45db2 | 276 | struct ui_file *stream) |
c906108c | 277 | { |
df407dfe | 278 | struct type *type = check_typedef (value_type (val)); |
c906108c SS |
279 | int len = TYPE_LENGTH (type); |
280 | ||
281 | if (VALUE_LVAL (val) == lval_memory) | |
42ae5230 | 282 | next_address = value_address (val) + len; |
c906108c | 283 | |
ea37ba09 | 284 | if (size) |
c906108c | 285 | { |
79a45b7d | 286 | switch (options->format) |
ea37ba09 DJ |
287 | { |
288 | case 's': | |
6c7a06a3 TT |
289 | { |
290 | struct type *elttype = value_type (val); | |
ad3bbd48 | 291 | |
42ae5230 | 292 | next_address = (value_address (val) |
09ca9e2e | 293 | + val_print_string (elttype, NULL, |
42ae5230 | 294 | value_address (val), -1, |
9a22f0d0 | 295 | stream, options) * len); |
6c7a06a3 | 296 | } |
ea37ba09 | 297 | return; |
c906108c | 298 | |
ea37ba09 DJ |
299 | case 'i': |
300 | /* We often wrap here if there are long symbolic names. */ | |
301 | wrap_here (" "); | |
42ae5230 | 302 | next_address = (value_address (val) |
13274fc3 UW |
303 | + gdb_print_insn (get_type_arch (type), |
304 | value_address (val), stream, | |
ea37ba09 DJ |
305 | &branch_delay_insns)); |
306 | return; | |
307 | } | |
c906108c | 308 | } |
ea37ba09 | 309 | |
79a45b7d | 310 | if (options->format == 0 || options->format == 's' |
4e885b20 | 311 | || TYPE_CODE (type) == TYPE_CODE_REF |
ea37ba09 DJ |
312 | || TYPE_CODE (type) == TYPE_CODE_ARRAY |
313 | || TYPE_CODE (type) == TYPE_CODE_STRING | |
314 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
315 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
316 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
79a45b7d | 317 | value_print (val, stream, options); |
ea37ba09 | 318 | else |
b021a221 MS |
319 | /* User specified format, so don't look to the type to tell us |
320 | what to do. */ | |
ab2188aa | 321 | val_print_scalar_formatted (type, |
ab2188aa PA |
322 | value_embedded_offset (val), |
323 | val, | |
324 | options, size, stream); | |
c906108c SS |
325 | } |
326 | ||
b806fb9a UW |
327 | /* Return builtin floating point type of same length as TYPE. |
328 | If no such type is found, return TYPE itself. */ | |
329 | static struct type * | |
50810684 | 330 | float_type_from_length (struct type *type) |
b806fb9a | 331 | { |
50810684 | 332 | struct gdbarch *gdbarch = get_type_arch (type); |
b806fb9a | 333 | const struct builtin_type *builtin = builtin_type (gdbarch); |
b806fb9a | 334 | |
744a8059 | 335 | if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_float)) |
b806fb9a | 336 | type = builtin->builtin_float; |
744a8059 | 337 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_double)) |
b806fb9a | 338 | type = builtin->builtin_double; |
744a8059 | 339 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_long_double)) |
b806fb9a UW |
340 | type = builtin->builtin_long_double; |
341 | ||
342 | return type; | |
343 | } | |
344 | ||
c906108c | 345 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, |
ab2188aa PA |
346 | according to OPTIONS and SIZE on STREAM. Formats s and i are not |
347 | supported at this level. */ | |
c906108c SS |
348 | |
349 | void | |
7c543f7b | 350 | print_scalar_formatted (const gdb_byte *valaddr, struct type *type, |
79a45b7d TT |
351 | const struct value_print_options *options, |
352 | int size, struct ui_file *stream) | |
c906108c | 353 | { |
50810684 | 354 | struct gdbarch *gdbarch = get_type_arch (type); |
c906108c | 355 | unsigned int len = TYPE_LENGTH (type); |
69feb676 | 356 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 357 | |
ab2188aa PA |
358 | /* String printing should go through val_print_scalar_formatted. */ |
359 | gdb_assert (options->format != 's'); | |
ea37ba09 | 360 | |
ef166cf4 | 361 | /* If the value is a pointer, and pointers and addresses are not the |
d0aee0c4 | 362 | same, then at this point, the value's length (in target bytes) is |
17a912b6 | 363 | gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */ |
ef166cf4 | 364 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
69feb676 | 365 | len = gdbarch_addr_bit (gdbarch) / TARGET_CHAR_BIT; |
ef166cf4 | 366 | |
c906108c SS |
367 | /* If we are printing it as unsigned, truncate it in case it is actually |
368 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
369 | (if shorts are 16 bits) instead of 4294967295). */ | |
d9109c80 TT |
370 | if (options->format != 'c' |
371 | && (options->format != 'd' || TYPE_UNSIGNED (type))) | |
c906108c | 372 | { |
d9109c80 TT |
373 | if (len < TYPE_LENGTH (type) && byte_order == BFD_ENDIAN_BIG) |
374 | valaddr += TYPE_LENGTH (type) - len; | |
c906108c SS |
375 | } |
376 | ||
d9109c80 | 377 | if (size != 0 && (options->format == 'x' || options->format == 't')) |
c906108c | 378 | { |
d9109c80 TT |
379 | /* Truncate to fit. */ |
380 | unsigned newlen; | |
381 | switch (size) | |
c906108c | 382 | { |
d9109c80 TT |
383 | case 'b': |
384 | newlen = 1; | |
385 | break; | |
386 | case 'h': | |
387 | newlen = 2; | |
388 | break; | |
389 | case 'w': | |
390 | newlen = 4; | |
391 | break; | |
392 | case 'g': | |
393 | newlen = 8; | |
394 | break; | |
395 | default: | |
396 | error (_("Undefined output size \"%c\"."), size); | |
c906108c | 397 | } |
d9109c80 TT |
398 | if (newlen < len && byte_order == BFD_ENDIAN_BIG) |
399 | valaddr += len - newlen; | |
400 | len = newlen; | |
401 | } | |
c906108c | 402 | |
d9109c80 TT |
403 | /* Historically gdb has printed floats by first casting them to a |
404 | long, and then printing the long. PR cli/16242 suggests changing | |
405 | this to using C-style hex float format. */ | |
d5722aa2 | 406 | gdb::byte_vector converted_float_bytes; |
d9109c80 TT |
407 | if (TYPE_CODE (type) == TYPE_CODE_FLT |
408 | && (options->format == 'o' | |
409 | || options->format == 'x' | |
410 | || options->format == 't' | |
d6382fff TT |
411 | || options->format == 'z' |
412 | || options->format == 'd' | |
413 | || options->format == 'u')) | |
d9109c80 TT |
414 | { |
415 | LONGEST val_long = unpack_long (type, valaddr); | |
416 | converted_float_bytes.resize (TYPE_LENGTH (type)); | |
417 | store_signed_integer (converted_float_bytes.data (), TYPE_LENGTH (type), | |
418 | byte_order, val_long); | |
419 | valaddr = converted_float_bytes.data (); | |
420 | } | |
c906108c | 421 | |
fdf0cbc2 UW |
422 | /* Printing a non-float type as 'f' will interpret the data as if it were |
423 | of a floating-point type of the same length, if that exists. Otherwise, | |
424 | the data is printed as integer. */ | |
425 | char format = options->format; | |
426 | if (format == 'f' && TYPE_CODE (type) != TYPE_CODE_FLT) | |
427 | { | |
428 | type = float_type_from_length (type); | |
429 | if (TYPE_CODE (type) != TYPE_CODE_FLT) | |
430 | format = 0; | |
431 | } | |
432 | ||
433 | switch (format) | |
d9109c80 TT |
434 | { |
435 | case 'o': | |
436 | print_octal_chars (stream, valaddr, len, byte_order); | |
437 | break; | |
d6382fff TT |
438 | case 'd': |
439 | print_decimal_chars (stream, valaddr, len, true, byte_order); | |
440 | break; | |
c906108c | 441 | case 'u': |
d9109c80 | 442 | print_decimal_chars (stream, valaddr, len, false, byte_order); |
c906108c | 443 | break; |
d9109c80 | 444 | case 0: |
d9109c80 TT |
445 | if (TYPE_CODE (type) != TYPE_CODE_FLT) |
446 | { | |
447 | print_decimal_chars (stream, valaddr, len, !TYPE_UNSIGNED (type), | |
448 | byte_order); | |
449 | break; | |
450 | } | |
451 | /* FALLTHROUGH */ | |
452 | case 'f': | |
d9109c80 | 453 | print_floating (valaddr, type, stream); |
c906108c SS |
454 | break; |
455 | ||
d9109c80 TT |
456 | case 't': |
457 | print_binary_chars (stream, valaddr, len, byte_order, size > 0); | |
458 | break; | |
459 | case 'x': | |
460 | print_hex_chars (stream, valaddr, len, byte_order, size > 0); | |
461 | break; | |
462 | case 'z': | |
463 | print_hex_chars (stream, valaddr, len, byte_order, true); | |
c906108c | 464 | break; |
c906108c | 465 | case 'c': |
79a45b7d TT |
466 | { |
467 | struct value_print_options opts = *options; | |
69feb676 | 468 | |
d9109c80 TT |
469 | LONGEST val_long = unpack_long (type, valaddr); |
470 | ||
ad3bbd48 | 471 | opts.format = 0; |
79a45b7d | 472 | if (TYPE_UNSIGNED (type)) |
69feb676 UW |
473 | type = builtin_type (gdbarch)->builtin_true_unsigned_char; |
474 | else | |
475 | type = builtin_type (gdbarch)->builtin_true_char; | |
476 | ||
477 | value_print (value_from_longest (type, val_long), stream, &opts); | |
79a45b7d | 478 | } |
c906108c SS |
479 | break; |
480 | ||
d9109c80 | 481 | case 'a': |
c906108c | 482 | { |
d9109c80 | 483 | CORE_ADDR addr = unpack_pointer (type, valaddr); |
c906108c | 484 | |
d9109c80 | 485 | print_address (gdbarch, addr, stream); |
c906108c SS |
486 | } |
487 | break; | |
488 | ||
489 | default: | |
fdf0cbc2 | 490 | error (_("Undefined output format \"%c\"."), format); |
c906108c SS |
491 | } |
492 | } | |
493 | ||
494 | /* Specify default address for `x' command. | |
675dcf4f | 495 | The `info lines' command uses this. */ |
c906108c SS |
496 | |
497 | void | |
8b9b9e1a | 498 | set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 499 | { |
8b9b9e1a UW |
500 | struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
501 | ||
5d3729b5 | 502 | next_gdbarch = gdbarch; |
c906108c SS |
503 | next_address = addr; |
504 | ||
505 | /* Make address available to the user as $_. */ | |
506 | set_internalvar (lookup_internalvar ("_"), | |
8b9b9e1a | 507 | value_from_pointer (ptr_type, addr)); |
c906108c SS |
508 | } |
509 | ||
510 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
511 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
512 | Optionally also print source file and line number, if available. | |
513 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
514 | or to interpret it as a possible C++ name and convert it back to source | |
515 | form. However note that DO_DEMANGLE can be overridden by the specific | |
9cb709b6 TT |
516 | settings of the demangle and asm_demangle variables. Returns |
517 | non-zero if anything was printed; zero otherwise. */ | |
c906108c | 518 | |
9cb709b6 | 519 | int |
22e722e1 DJ |
520 | print_address_symbolic (struct gdbarch *gdbarch, CORE_ADDR addr, |
521 | struct ui_file *stream, | |
a121b7c1 | 522 | int do_demangle, const char *leadin) |
dfcd3bfb | 523 | { |
c7110220 | 524 | std::string name, filename; |
dfcd3bfb JM |
525 | int unmapped = 0; |
526 | int offset = 0; | |
527 | int line = 0; | |
528 | ||
22e722e1 | 529 | if (build_address_symbolic (gdbarch, addr, do_demangle, &name, &offset, |
675dcf4f | 530 | &filename, &line, &unmapped)) |
c7110220 | 531 | return 0; |
dfcd3bfb JM |
532 | |
533 | fputs_filtered (leadin, stream); | |
534 | if (unmapped) | |
535 | fputs_filtered ("<*", stream); | |
536 | else | |
537 | fputs_filtered ("<", stream); | |
af79b68d | 538 | fputs_styled (name.c_str (), function_name_style.style (), stream); |
dfcd3bfb JM |
539 | if (offset != 0) |
540 | fprintf_filtered (stream, "+%u", (unsigned int) offset); | |
541 | ||
542 | /* Append source filename and line number if desired. Give specific | |
543 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
c7110220 | 544 | if (print_symbol_filename && !filename.empty ()) |
dfcd3bfb | 545 | { |
af79b68d TT |
546 | fputs_filtered (line == -1 ? " in " : " at ", stream); |
547 | fputs_styled (filename.c_str (), file_name_style.style (), stream); | |
dfcd3bfb | 548 | if (line != -1) |
af79b68d | 549 | fprintf_filtered (stream, ":%d", line); |
dfcd3bfb JM |
550 | } |
551 | if (unmapped) | |
552 | fputs_filtered ("*>", stream); | |
553 | else | |
554 | fputs_filtered (">", stream); | |
555 | ||
9cb709b6 | 556 | return 1; |
dfcd3bfb JM |
557 | } |
558 | ||
c7110220 TT |
559 | /* See valprint.h. */ |
560 | ||
dfcd3bfb | 561 | int |
22e722e1 DJ |
562 | build_address_symbolic (struct gdbarch *gdbarch, |
563 | CORE_ADDR addr, /* IN */ | |
dfcd3bfb | 564 | int do_demangle, /* IN */ |
c7110220 | 565 | std::string *name, /* OUT */ |
dfcd3bfb | 566 | int *offset, /* OUT */ |
c7110220 | 567 | std::string *filename, /* OUT */ |
dfcd3bfb JM |
568 | int *line, /* OUT */ |
569 | int *unmapped) /* OUT */ | |
c906108c | 570 | { |
77e371c0 | 571 | struct bound_minimal_symbol msymbol; |
c906108c | 572 | struct symbol *symbol; |
c906108c | 573 | CORE_ADDR name_location = 0; |
714835d5 | 574 | struct obj_section *section = NULL; |
0d5cff50 | 575 | const char *name_temp = ""; |
dfcd3bfb | 576 | |
89c83b10 | 577 | /* Let's say it is mapped (not unmapped). */ |
dfcd3bfb | 578 | *unmapped = 0; |
c906108c | 579 | |
dfcd3bfb | 580 | /* Determine if the address is in an overlay, and whether it is |
675dcf4f | 581 | mapped. */ |
c906108c SS |
582 | if (overlay_debugging) |
583 | { | |
584 | section = find_pc_overlay (addr); | |
585 | if (pc_in_unmapped_range (addr, section)) | |
586 | { | |
dfcd3bfb | 587 | *unmapped = 1; |
c906108c SS |
588 | addr = overlay_mapped_address (addr, section); |
589 | } | |
590 | } | |
591 | ||
c906108c SS |
592 | /* First try to find the address in the symbol table, then |
593 | in the minsyms. Take the closest one. */ | |
594 | ||
595 | /* This is defective in the sense that it only finds text symbols. So | |
596 | really this is kind of pointless--we should make sure that the | |
597 | minimal symbols have everything we need (by changing that we could | |
598 | save some memory, but for many debug format--ELF/DWARF or | |
599 | anything/stabs--it would be inconvenient to eliminate those minimal | |
600 | symbols anyway). */ | |
77e371c0 | 601 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section); |
c906108c SS |
602 | symbol = find_pc_sect_function (addr, section); |
603 | ||
604 | if (symbol) | |
605 | { | |
22e722e1 DJ |
606 | /* If this is a function (i.e. a code address), strip out any |
607 | non-address bits. For instance, display a pointer to the | |
608 | first instruction of a Thumb function as <function>; the | |
609 | second instruction will be <function+2>, even though the | |
610 | pointer is <function+3>. This matches the ISA behavior. */ | |
611 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
612 | ||
2b1ffcfd | 613 | name_location = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (symbol)); |
406fc7fb | 614 | if (do_demangle || asm_demangle) |
de5ad195 | 615 | name_temp = SYMBOL_PRINT_NAME (symbol); |
c906108c | 616 | else |
3567439c | 617 | name_temp = SYMBOL_LINKAGE_NAME (symbol); |
c906108c SS |
618 | } |
619 | ||
77e371c0 TT |
620 | if (msymbol.minsym != NULL |
621 | && MSYMBOL_HAS_SIZE (msymbol.minsym) | |
622 | && MSYMBOL_SIZE (msymbol.minsym) == 0 | |
623 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text | |
624 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text_gnu_ifunc | |
625 | && MSYMBOL_TYPE (msymbol.minsym) != mst_file_text) | |
626 | msymbol.minsym = NULL; | |
9cb709b6 | 627 | |
77e371c0 | 628 | if (msymbol.minsym != NULL) |
c906108c | 629 | { |
77e371c0 | 630 | if (BMSYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL) |
c906108c | 631 | { |
fe8400b4 WN |
632 | /* If this is a function (i.e. a code address), strip out any |
633 | non-address bits. For instance, display a pointer to the | |
634 | first instruction of a Thumb function as <function>; the | |
635 | second instruction will be <function+2>, even though the | |
636 | pointer is <function+3>. This matches the ISA behavior. */ | |
77e371c0 TT |
637 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_text |
638 | || MSYMBOL_TYPE (msymbol.minsym) == mst_text_gnu_ifunc | |
639 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_text | |
640 | || MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
fe8400b4 WN |
641 | addr = gdbarch_addr_bits_remove (gdbarch, addr); |
642 | ||
c906108c SS |
643 | /* The msymbol is closer to the address than the symbol; |
644 | use the msymbol instead. */ | |
645 | symbol = 0; | |
77e371c0 | 646 | name_location = BMSYMBOL_VALUE_ADDRESS (msymbol); |
406fc7fb | 647 | if (do_demangle || asm_demangle) |
77e371c0 | 648 | name_temp = MSYMBOL_PRINT_NAME (msymbol.minsym); |
c906108c | 649 | else |
77e371c0 | 650 | name_temp = MSYMBOL_LINKAGE_NAME (msymbol.minsym); |
c906108c SS |
651 | } |
652 | } | |
77e371c0 | 653 | if (symbol == NULL && msymbol.minsym == NULL) |
dfcd3bfb | 654 | return 1; |
c906108c | 655 | |
c906108c SS |
656 | /* If the nearest symbol is too far away, don't print anything symbolic. */ |
657 | ||
658 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
659 | CORE_ADDR. But when we detect unsigned wraparound in the | |
660 | CORE_ADDR math, we ignore this test and print the offset, | |
661 | because addr+max_symbolic_offset has wrapped through the end | |
662 | of the address space back to the beginning, giving bogus comparison. */ | |
663 | if (addr > name_location + max_symbolic_offset | |
664 | && name_location + max_symbolic_offset > name_location) | |
dfcd3bfb | 665 | return 1; |
c906108c | 666 | |
dfcd3bfb JM |
667 | *offset = addr - name_location; |
668 | ||
c7110220 | 669 | *name = name_temp; |
c906108c | 670 | |
c906108c SS |
671 | if (print_symbol_filename) |
672 | { | |
673 | struct symtab_and_line sal; | |
674 | ||
675 | sal = find_pc_sect_line (addr, section, 0); | |
676 | ||
677 | if (sal.symtab) | |
dfcd3bfb | 678 | { |
c7110220 | 679 | *filename = symtab_to_filename_for_display (sal.symtab); |
dfcd3bfb JM |
680 | *line = sal.line; |
681 | } | |
c906108c | 682 | } |
dfcd3bfb | 683 | return 0; |
c906108c SS |
684 | } |
685 | ||
c906108c SS |
686 | |
687 | /* Print address ADDR symbolically on STREAM. | |
688 | First print it as a number. Then perhaps print | |
689 | <SYMBOL + OFFSET> after the number. */ | |
690 | ||
691 | void | |
5af949e3 UW |
692 | print_address (struct gdbarch *gdbarch, |
693 | CORE_ADDR addr, struct ui_file *stream) | |
c906108c | 694 | { |
35fb8261 | 695 | fputs_styled (paddress (gdbarch, addr), address_style.style (), stream); |
22e722e1 | 696 | print_address_symbolic (gdbarch, addr, stream, asm_demangle, " "); |
c906108c SS |
697 | } |
698 | ||
2b28d209 PP |
699 | /* Return a prefix for instruction address: |
700 | "=> " for current instruction, else " ". */ | |
701 | ||
702 | const char * | |
703 | pc_prefix (CORE_ADDR addr) | |
704 | { | |
705 | if (has_stack_frames ()) | |
706 | { | |
707 | struct frame_info *frame; | |
708 | CORE_ADDR pc; | |
709 | ||
710 | frame = get_selected_frame (NULL); | |
ce406537 | 711 | if (get_frame_pc_if_available (frame, &pc) && pc == addr) |
2b28d209 PP |
712 | return "=> "; |
713 | } | |
714 | return " "; | |
715 | } | |
716 | ||
c906108c SS |
717 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE |
718 | controls whether to print the symbolic name "raw" or demangled. | |
9cb709b6 | 719 | Return non-zero if anything was printed; zero otherwise. */ |
c906108c | 720 | |
9cb709b6 | 721 | int |
edf0c1b7 TT |
722 | print_address_demangle (const struct value_print_options *opts, |
723 | struct gdbarch *gdbarch, CORE_ADDR addr, | |
5af949e3 | 724 | struct ui_file *stream, int do_demangle) |
c906108c | 725 | { |
1d51a733 | 726 | if (opts->addressprint) |
c906108c | 727 | { |
35fb8261 | 728 | fputs_styled (paddress (gdbarch, addr), address_style.style (), stream); |
22e722e1 | 729 | print_address_symbolic (gdbarch, addr, stream, do_demangle, " "); |
c906108c SS |
730 | } |
731 | else | |
732 | { | |
9cb709b6 | 733 | return print_address_symbolic (gdbarch, addr, stream, do_demangle, ""); |
c906108c | 734 | } |
9cb709b6 | 735 | return 1; |
c906108c SS |
736 | } |
737 | \f | |
738 | ||
bb556f1f TK |
739 | /* Find the address of the instruction that is INST_COUNT instructions before |
740 | the instruction at ADDR. | |
741 | Since some architectures have variable-length instructions, we can't just | |
742 | simply subtract INST_COUNT * INSN_LEN from ADDR. Instead, we use line | |
743 | number information to locate the nearest known instruction boundary, | |
744 | and disassemble forward from there. If we go out of the symbol range | |
745 | during disassembling, we return the lowest address we've got so far and | |
746 | set the number of instructions read to INST_READ. */ | |
747 | ||
748 | static CORE_ADDR | |
749 | find_instruction_backward (struct gdbarch *gdbarch, CORE_ADDR addr, | |
750 | int inst_count, int *inst_read) | |
751 | { | |
752 | /* The vector PCS is used to store instruction addresses within | |
753 | a pc range. */ | |
754 | CORE_ADDR loop_start, loop_end, p; | |
52d214d3 | 755 | std::vector<CORE_ADDR> pcs; |
bb556f1f | 756 | struct symtab_and_line sal; |
bb556f1f TK |
757 | |
758 | *inst_read = 0; | |
759 | loop_start = loop_end = addr; | |
760 | ||
761 | /* In each iteration of the outer loop, we get a pc range that ends before | |
762 | LOOP_START, then we count and store every instruction address of the range | |
763 | iterated in the loop. | |
764 | If the number of instructions counted reaches INST_COUNT, return the | |
765 | stored address that is located INST_COUNT instructions back from ADDR. | |
766 | If INST_COUNT is not reached, we subtract the number of counted | |
767 | instructions from INST_COUNT, and go to the next iteration. */ | |
768 | do | |
769 | { | |
52d214d3 | 770 | pcs.clear (); |
bb556f1f TK |
771 | sal = find_pc_sect_line (loop_start, NULL, 1); |
772 | if (sal.line <= 0) | |
773 | { | |
774 | /* We reach here when line info is not available. In this case, | |
775 | we print a message and just exit the loop. The return value | |
776 | is calculated after the loop. */ | |
777 | printf_filtered (_("No line number information available " | |
778 | "for address ")); | |
779 | wrap_here (" "); | |
780 | print_address (gdbarch, loop_start - 1, gdb_stdout); | |
781 | printf_filtered ("\n"); | |
782 | break; | |
783 | } | |
784 | ||
785 | loop_end = loop_start; | |
786 | loop_start = sal.pc; | |
787 | ||
788 | /* This loop pushes instruction addresses in the range from | |
789 | LOOP_START to LOOP_END. */ | |
790 | for (p = loop_start; p < loop_end;) | |
791 | { | |
52d214d3 | 792 | pcs.push_back (p); |
bb556f1f TK |
793 | p += gdb_insn_length (gdbarch, p); |
794 | } | |
795 | ||
52d214d3 TT |
796 | inst_count -= pcs.size (); |
797 | *inst_read += pcs.size (); | |
bb556f1f TK |
798 | } |
799 | while (inst_count > 0); | |
800 | ||
801 | /* After the loop, the vector PCS has instruction addresses of the last | |
802 | source line we processed, and INST_COUNT has a negative value. | |
803 | We return the address at the index of -INST_COUNT in the vector for | |
804 | the reason below. | |
805 | Let's assume the following instruction addresses and run 'x/-4i 0x400e'. | |
806 | Line X of File | |
807 | 0x4000 | |
808 | 0x4001 | |
809 | 0x4005 | |
810 | Line Y of File | |
811 | 0x4009 | |
812 | 0x400c | |
813 | => 0x400e | |
814 | 0x4011 | |
815 | find_instruction_backward is called with INST_COUNT = 4 and expected to | |
816 | return 0x4001. When we reach here, INST_COUNT is set to -1 because | |
817 | it was subtracted by 2 (from Line Y) and 3 (from Line X). The value | |
818 | 4001 is located at the index 1 of the last iterated line (= Line X), | |
819 | which is simply calculated by -INST_COUNT. | |
820 | The case when the length of PCS is 0 means that we reached an area for | |
821 | which line info is not available. In such case, we return LOOP_START, | |
822 | which was the lowest instruction address that had line info. */ | |
52d214d3 | 823 | p = pcs.size () > 0 ? pcs[-inst_count] : loop_start; |
bb556f1f TK |
824 | |
825 | /* INST_READ includes all instruction addresses in a pc range. Need to | |
826 | exclude the beginning part up to the address we're returning. That | |
827 | is, exclude {0x4000} in the example above. */ | |
828 | if (inst_count < 0) | |
829 | *inst_read += inst_count; | |
830 | ||
bb556f1f TK |
831 | return p; |
832 | } | |
833 | ||
834 | /* Backward read LEN bytes of target memory from address MEMADDR + LEN, | |
835 | placing the results in GDB's memory from MYADDR + LEN. Returns | |
836 | a count of the bytes actually read. */ | |
837 | ||
838 | static int | |
839 | read_memory_backward (struct gdbarch *gdbarch, | |
840 | CORE_ADDR memaddr, gdb_byte *myaddr, int len) | |
841 | { | |
842 | int errcode; | |
843 | int nread; /* Number of bytes actually read. */ | |
844 | ||
845 | /* First try a complete read. */ | |
846 | errcode = target_read_memory (memaddr, myaddr, len); | |
847 | if (errcode == 0) | |
848 | { | |
849 | /* Got it all. */ | |
850 | nread = len; | |
851 | } | |
852 | else | |
853 | { | |
854 | /* Loop, reading one byte at a time until we get as much as we can. */ | |
855 | memaddr += len; | |
856 | myaddr += len; | |
857 | for (nread = 0; nread < len; ++nread) | |
858 | { | |
859 | errcode = target_read_memory (--memaddr, --myaddr, 1); | |
860 | if (errcode != 0) | |
861 | { | |
862 | /* The read was unsuccessful, so exit the loop. */ | |
863 | printf_filtered (_("Cannot access memory at address %s\n"), | |
864 | paddress (gdbarch, memaddr)); | |
865 | break; | |
866 | } | |
867 | } | |
868 | } | |
869 | return nread; | |
870 | } | |
871 | ||
872 | /* Returns true if X (which is LEN bytes wide) is the number zero. */ | |
873 | ||
874 | static int | |
875 | integer_is_zero (const gdb_byte *x, int len) | |
876 | { | |
877 | int i = 0; | |
878 | ||
879 | while (i < len && x[i] == 0) | |
880 | ++i; | |
881 | return (i == len); | |
882 | } | |
883 | ||
884 | /* Find the start address of a string in which ADDR is included. | |
885 | Basically we search for '\0' and return the next address, | |
886 | but if OPTIONS->PRINT_MAX is smaller than the length of a string, | |
887 | we stop searching and return the address to print characters as many as | |
888 | PRINT_MAX from the string. */ | |
889 | ||
890 | static CORE_ADDR | |
891 | find_string_backward (struct gdbarch *gdbarch, | |
892 | CORE_ADDR addr, int count, int char_size, | |
893 | const struct value_print_options *options, | |
894 | int *strings_counted) | |
895 | { | |
896 | const int chunk_size = 0x20; | |
bb556f1f TK |
897 | int read_error = 0; |
898 | int chars_read = 0; | |
899 | int chars_to_read = chunk_size; | |
900 | int chars_counted = 0; | |
901 | int count_original = count; | |
902 | CORE_ADDR string_start_addr = addr; | |
903 | ||
904 | gdb_assert (char_size == 1 || char_size == 2 || char_size == 4); | |
26fcd5d7 | 905 | gdb::byte_vector buffer (chars_to_read * char_size); |
bb556f1f TK |
906 | while (count > 0 && read_error == 0) |
907 | { | |
908 | int i; | |
909 | ||
910 | addr -= chars_to_read * char_size; | |
26fcd5d7 | 911 | chars_read = read_memory_backward (gdbarch, addr, buffer.data (), |
bb556f1f TK |
912 | chars_to_read * char_size); |
913 | chars_read /= char_size; | |
914 | read_error = (chars_read == chars_to_read) ? 0 : 1; | |
915 | /* Searching for '\0' from the end of buffer in backward direction. */ | |
916 | for (i = 0; i < chars_read && count > 0 ; ++i, ++chars_counted) | |
917 | { | |
918 | int offset = (chars_to_read - i - 1) * char_size; | |
919 | ||
26fcd5d7 | 920 | if (integer_is_zero (&buffer[offset], char_size) |
bb556f1f TK |
921 | || chars_counted == options->print_max) |
922 | { | |
923 | /* Found '\0' or reached print_max. As OFFSET is the offset to | |
924 | '\0', we add CHAR_SIZE to return the start address of | |
925 | a string. */ | |
926 | --count; | |
927 | string_start_addr = addr + offset + char_size; | |
928 | chars_counted = 0; | |
929 | } | |
930 | } | |
931 | } | |
932 | ||
933 | /* Update STRINGS_COUNTED with the actual number of loaded strings. */ | |
934 | *strings_counted = count_original - count; | |
935 | ||
936 | if (read_error != 0) | |
937 | { | |
938 | /* In error case, STRING_START_ADDR is pointing to the string that | |
939 | was last successfully loaded. Rewind the partially loaded string. */ | |
940 | string_start_addr -= chars_counted * char_size; | |
941 | } | |
942 | ||
bb556f1f TK |
943 | return string_start_addr; |
944 | } | |
945 | ||
c906108c SS |
946 | /* Examine data at address ADDR in format FMT. |
947 | Fetch it from memory and print on gdb_stdout. */ | |
948 | ||
949 | static void | |
5d3729b5 | 950 | do_examine (struct format_data fmt, struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 951 | { |
52f0bd74 AC |
952 | char format = 0; |
953 | char size; | |
954 | int count = 1; | |
c906108c | 955 | struct type *val_type = NULL; |
52f0bd74 AC |
956 | int i; |
957 | int maxelts; | |
79a45b7d | 958 | struct value_print_options opts; |
bb556f1f TK |
959 | int need_to_update_next_address = 0; |
960 | CORE_ADDR addr_rewound = 0; | |
c906108c SS |
961 | |
962 | format = fmt.format; | |
963 | size = fmt.size; | |
964 | count = fmt.count; | |
5d3729b5 | 965 | next_gdbarch = gdbarch; |
c906108c | 966 | next_address = addr; |
c906108c | 967 | |
9a22f0d0 PM |
968 | /* Instruction format implies fetch single bytes |
969 | regardless of the specified size. | |
970 | The case of strings is handled in decode_format, only explicit | |
971 | size operator are not changed to 'b'. */ | |
972 | if (format == 'i') | |
c906108c SS |
973 | size = 'b'; |
974 | ||
5d3729b5 UW |
975 | if (size == 'a') |
976 | { | |
977 | /* Pick the appropriate size for an address. */ | |
978 | if (gdbarch_ptr_bit (next_gdbarch) == 64) | |
979 | size = 'g'; | |
980 | else if (gdbarch_ptr_bit (next_gdbarch) == 32) | |
981 | size = 'w'; | |
982 | else if (gdbarch_ptr_bit (next_gdbarch) == 16) | |
983 | size = 'h'; | |
984 | else | |
985 | /* Bad value for gdbarch_ptr_bit. */ | |
986 | internal_error (__FILE__, __LINE__, | |
987 | _("failed internal consistency check")); | |
988 | } | |
989 | ||
990 | if (size == 'b') | |
df4df182 | 991 | val_type = builtin_type (next_gdbarch)->builtin_int8; |
c906108c | 992 | else if (size == 'h') |
df4df182 | 993 | val_type = builtin_type (next_gdbarch)->builtin_int16; |
c906108c | 994 | else if (size == 'w') |
df4df182 | 995 | val_type = builtin_type (next_gdbarch)->builtin_int32; |
c906108c | 996 | else if (size == 'g') |
df4df182 | 997 | val_type = builtin_type (next_gdbarch)->builtin_int64; |
c906108c | 998 | |
9a22f0d0 PM |
999 | if (format == 's') |
1000 | { | |
1001 | struct type *char_type = NULL; | |
ad3bbd48 | 1002 | |
9a22f0d0 PM |
1003 | /* Search for "char16_t" or "char32_t" types or fall back to 8-bit char |
1004 | if type is not found. */ | |
1005 | if (size == 'h') | |
1006 | char_type = builtin_type (next_gdbarch)->builtin_char16; | |
1007 | else if (size == 'w') | |
1008 | char_type = builtin_type (next_gdbarch)->builtin_char32; | |
1009 | if (char_type) | |
1010 | val_type = char_type; | |
1011 | else | |
1012 | { | |
1013 | if (size != '\0' && size != 'b') | |
0df8b418 MS |
1014 | warning (_("Unable to display strings with " |
1015 | "size '%c', using 'b' instead."), size); | |
9a22f0d0 PM |
1016 | size = 'b'; |
1017 | val_type = builtin_type (next_gdbarch)->builtin_int8; | |
1018 | } | |
1019 | } | |
1020 | ||
c906108c SS |
1021 | maxelts = 8; |
1022 | if (size == 'w') | |
1023 | maxelts = 4; | |
1024 | if (size == 'g') | |
1025 | maxelts = 2; | |
1026 | if (format == 's' || format == 'i') | |
1027 | maxelts = 1; | |
1028 | ||
79a45b7d TT |
1029 | get_formatted_print_options (&opts, format); |
1030 | ||
bb556f1f TK |
1031 | if (count < 0) |
1032 | { | |
1033 | /* This is the negative repeat count case. | |
1034 | We rewind the address based on the given repeat count and format, | |
1035 | then examine memory from there in forward direction. */ | |
1036 | ||
1037 | count = -count; | |
1038 | if (format == 'i') | |
1039 | { | |
1040 | next_address = find_instruction_backward (gdbarch, addr, count, | |
1041 | &count); | |
1042 | } | |
1043 | else if (format == 's') | |
1044 | { | |
1045 | next_address = find_string_backward (gdbarch, addr, count, | |
1046 | TYPE_LENGTH (val_type), | |
1047 | &opts, &count); | |
1048 | } | |
1049 | else | |
1050 | { | |
1051 | next_address = addr - count * TYPE_LENGTH (val_type); | |
1052 | } | |
1053 | ||
1054 | /* The following call to print_formatted updates next_address in every | |
1055 | iteration. In backward case, we store the start address here | |
1056 | and update next_address with it before exiting the function. */ | |
1057 | addr_rewound = (format == 's' | |
1058 | ? next_address - TYPE_LENGTH (val_type) | |
1059 | : next_address); | |
1060 | need_to_update_next_address = 1; | |
1061 | } | |
1062 | ||
c906108c SS |
1063 | /* Print as many objects as specified in COUNT, at most maxelts per line, |
1064 | with the address of the next one at the start of each line. */ | |
1065 | ||
1066 | while (count > 0) | |
1067 | { | |
1068 | QUIT; | |
2b28d209 PP |
1069 | if (format == 'i') |
1070 | fputs_filtered (pc_prefix (next_address), gdb_stdout); | |
5af949e3 | 1071 | print_address (next_gdbarch, next_address, gdb_stdout); |
c906108c SS |
1072 | printf_filtered (":"); |
1073 | for (i = maxelts; | |
1074 | i > 0 && count > 0; | |
1075 | i--, count--) | |
1076 | { | |
1077 | printf_filtered ("\t"); | |
1078 | /* Note that print_formatted sets next_address for the next | |
1079 | object. */ | |
1080 | last_examine_address = next_address; | |
1081 | ||
c906108c | 1082 | /* The value to be displayed is not fetched greedily. |
5d51a2db MR |
1083 | Instead, to avoid the possibility of a fetched value not |
1084 | being used, its retrieval is delayed until the print code | |
c5aa993b JM |
1085 | uses it. When examining an instruction stream, the |
1086 | disassembler will perform its own memory fetch using just | |
1087 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
1088 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
1089 | is left with the byte sequence from the last complete | |
0df8b418 | 1090 | instruction fetched from memory? */ |
9b558729 TT |
1091 | last_examine_value |
1092 | = release_value (value_at_lazy (val_type, next_address)); | |
c906108c | 1093 | |
9b558729 | 1094 | print_formatted (last_examine_value.get (), size, &opts, gdb_stdout); |
a4642986 MR |
1095 | |
1096 | /* Display any branch delay slots following the final insn. */ | |
1097 | if (format == 'i' && count == 1) | |
1098 | count += branch_delay_insns; | |
c906108c SS |
1099 | } |
1100 | printf_filtered ("\n"); | |
1101 | gdb_flush (gdb_stdout); | |
1102 | } | |
bb556f1f TK |
1103 | |
1104 | if (need_to_update_next_address) | |
1105 | next_address = addr_rewound; | |
c906108c SS |
1106 | } |
1107 | \f | |
1108 | static void | |
8d89f51a | 1109 | validate_format (struct format_data fmt, const char *cmdname) |
c906108c SS |
1110 | { |
1111 | if (fmt.size != 0) | |
8a3fe4f8 | 1112 | error (_("Size letters are meaningless in \"%s\" command."), cmdname); |
c906108c | 1113 | if (fmt.count != 1) |
8a3fe4f8 | 1114 | error (_("Item count other than 1 is meaningless in \"%s\" command."), |
c906108c | 1115 | cmdname); |
ea37ba09 | 1116 | if (fmt.format == 'i') |
8a3fe4f8 | 1117 | error (_("Format letter \"%c\" is meaningless in \"%s\" command."), |
c906108c SS |
1118 | fmt.format, cmdname); |
1119 | } | |
1120 | ||
1c88ceb1 JK |
1121 | /* Parse print command format string into *FMTP and update *EXPP. |
1122 | CMDNAME should name the current command. */ | |
1123 | ||
1124 | void | |
1125 | print_command_parse_format (const char **expp, const char *cmdname, | |
1126 | struct format_data *fmtp) | |
1127 | { | |
1128 | const char *exp = *expp; | |
1129 | ||
1130 | if (exp && *exp == '/') | |
1131 | { | |
1132 | exp++; | |
1133 | *fmtp = decode_format (&exp, last_format, 0); | |
1134 | validate_format (*fmtp, cmdname); | |
1135 | last_format = fmtp->format; | |
1136 | } | |
1137 | else | |
1138 | { | |
1139 | fmtp->count = 1; | |
1140 | fmtp->format = 0; | |
1141 | fmtp->size = 0; | |
1142 | fmtp->raw = 0; | |
1143 | } | |
1144 | ||
1145 | *expp = exp; | |
1146 | } | |
1147 | ||
1148 | /* Print VAL to console according to *FMTP, including recording it to | |
1149 | the history. */ | |
1150 | ||
1151 | void | |
1152 | print_value (struct value *val, const struct format_data *fmtp) | |
1153 | { | |
1154 | struct value_print_options opts; | |
1155 | int histindex = record_latest_value (val); | |
1156 | ||
1157 | annotate_value_history_begin (histindex, value_type (val)); | |
1158 | ||
1159 | printf_filtered ("$%d = ", histindex); | |
1160 | ||
1161 | annotate_value_history_value (); | |
1162 | ||
1163 | get_formatted_print_options (&opts, fmtp->format); | |
1164 | opts.raw = fmtp->raw; | |
1165 | ||
1166 | print_formatted (val, fmtp->size, &opts, gdb_stdout); | |
1167 | printf_filtered ("\n"); | |
1168 | ||
1169 | annotate_value_history_end (); | |
1170 | } | |
1171 | ||
675dcf4f | 1172 | /* Evaluate string EXP as an expression in the current language and |
c5aa993b | 1173 | print the resulting value. EXP may contain a format specifier as the |
675dcf4f | 1174 | first argument ("/x myvar" for example, to print myvar in hex). */ |
c906108c SS |
1175 | |
1176 | static void | |
6f937416 | 1177 | print_command_1 (const char *exp, int voidprint) |
c906108c | 1178 | { |
3d6d86c6 | 1179 | struct value *val; |
c906108c | 1180 | struct format_data fmt; |
c906108c | 1181 | |
1c88ceb1 | 1182 | print_command_parse_format (&exp, "print", &fmt); |
c906108c SS |
1183 | |
1184 | if (exp && *exp) | |
1185 | { | |
4d01a485 PA |
1186 | expression_up expr = parse_expression (exp); |
1187 | val = evaluate_expression (expr.get ()); | |
c906108c SS |
1188 | } |
1189 | else | |
1190 | val = access_value_history (0); | |
1191 | ||
df407dfe AC |
1192 | if (voidprint || (val && value_type (val) && |
1193 | TYPE_CODE (value_type (val)) != TYPE_CODE_VOID)) | |
1c88ceb1 | 1194 | print_value (val, &fmt); |
c906108c SS |
1195 | } |
1196 | ||
c906108c | 1197 | static void |
0b39b52e | 1198 | print_command (const char *exp, int from_tty) |
c906108c | 1199 | { |
e93a8774 | 1200 | print_command_1 (exp, 1); |
c906108c SS |
1201 | } |
1202 | ||
675dcf4f | 1203 | /* Same as print, except it doesn't print void results. */ |
c906108c | 1204 | static void |
0b39b52e | 1205 | call_command (const char *exp, int from_tty) |
c906108c | 1206 | { |
e93a8774 | 1207 | print_command_1 (exp, 0); |
c906108c SS |
1208 | } |
1209 | ||
6f937416 PA |
1210 | /* Implementation of the "output" command. */ |
1211 | ||
6f937416 | 1212 | void |
122b53ea | 1213 | output_command (const char *exp, int from_tty) |
c906108c | 1214 | { |
52f0bd74 | 1215 | char format = 0; |
3d6d86c6 | 1216 | struct value *val; |
c906108c | 1217 | struct format_data fmt; |
79a45b7d | 1218 | struct value_print_options opts; |
c906108c | 1219 | |
777ea8f1 | 1220 | fmt.size = 0; |
a6bac58e | 1221 | fmt.raw = 0; |
777ea8f1 | 1222 | |
c906108c SS |
1223 | if (exp && *exp == '/') |
1224 | { | |
1225 | exp++; | |
1226 | fmt = decode_format (&exp, 0, 0); | |
1227 | validate_format (fmt, "output"); | |
1228 | format = fmt.format; | |
1229 | } | |
1230 | ||
4d01a485 | 1231 | expression_up expr = parse_expression (exp); |
c906108c | 1232 | |
4d01a485 | 1233 | val = evaluate_expression (expr.get ()); |
c906108c | 1234 | |
df407dfe | 1235 | annotate_value_begin (value_type (val)); |
c906108c | 1236 | |
79a45b7d | 1237 | get_formatted_print_options (&opts, format); |
a6bac58e | 1238 | opts.raw = fmt.raw; |
79a45b7d | 1239 | print_formatted (val, fmt.size, &opts, gdb_stdout); |
c906108c SS |
1240 | |
1241 | annotate_value_end (); | |
1242 | ||
2acceee2 JM |
1243 | wrap_here (""); |
1244 | gdb_flush (gdb_stdout); | |
c906108c SS |
1245 | } |
1246 | ||
c906108c | 1247 | static void |
981a3fb3 | 1248 | set_command (const char *exp, int from_tty) |
c906108c | 1249 | { |
4d01a485 | 1250 | expression_up expr = parse_expression (exp); |
ad3bbd48 | 1251 | |
0ece64fd TG |
1252 | if (expr->nelts >= 1) |
1253 | switch (expr->elts[0].opcode) | |
1254 | { | |
1255 | case UNOP_PREINCREMENT: | |
1256 | case UNOP_POSTINCREMENT: | |
1257 | case UNOP_PREDECREMENT: | |
1258 | case UNOP_POSTDECREMENT: | |
1259 | case BINOP_ASSIGN: | |
1260 | case BINOP_ASSIGN_MODIFY: | |
1261 | case BINOP_COMMA: | |
1262 | break; | |
1263 | default: | |
1264 | warning | |
1265 | (_("Expression is not an assignment (and might have no effect)")); | |
1266 | } | |
52b3699b | 1267 | |
4d01a485 | 1268 | evaluate_expression (expr.get ()); |
c906108c SS |
1269 | } |
1270 | ||
c906108c | 1271 | static void |
1d12d88f | 1272 | info_symbol_command (const char *arg, int from_tty) |
c906108c SS |
1273 | { |
1274 | struct minimal_symbol *msymbol; | |
c5aa993b | 1275 | struct obj_section *osect; |
c5aa993b JM |
1276 | CORE_ADDR addr, sect_addr; |
1277 | int matches = 0; | |
1278 | unsigned int offset; | |
c906108c SS |
1279 | |
1280 | if (!arg) | |
e2e0b3e5 | 1281 | error_no_arg (_("address")); |
c906108c SS |
1282 | |
1283 | addr = parse_and_eval_address (arg); | |
2030c079 | 1284 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 | 1285 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
c5aa993b | 1286 | { |
3b9d3ac2 TT |
1287 | /* Only process each object file once, even if there's a separate |
1288 | debug file. */ | |
1289 | if (objfile->separate_debug_objfile_backlink) | |
1290 | continue; | |
1291 | ||
1292 | sect_addr = overlay_mapped_address (addr, osect); | |
1293 | ||
1294 | if (obj_section_addr (osect) <= sect_addr | |
1295 | && sect_addr < obj_section_endaddr (osect) | |
1296 | && (msymbol | |
1297 | = lookup_minimal_symbol_by_pc_section (sect_addr, | |
1298 | osect).minsym)) | |
5178ed48 | 1299 | { |
3b9d3ac2 TT |
1300 | const char *obj_name, *mapped, *sec_name, *msym_name; |
1301 | const char *loc_string; | |
1302 | ||
1303 | matches = 1; | |
1304 | offset = sect_addr - MSYMBOL_VALUE_ADDRESS (objfile, msymbol); | |
1305 | mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped"); | |
1306 | sec_name = osect->the_bfd_section->name; | |
1307 | msym_name = MSYMBOL_PRINT_NAME (msymbol); | |
1308 | ||
1309 | /* Don't print the offset if it is zero. | |
1310 | We assume there's no need to handle i18n of "sym + offset". */ | |
1311 | std::string string_holder; | |
1312 | if (offset) | |
1313 | { | |
1314 | string_holder = string_printf ("%s + %u", msym_name, offset); | |
1315 | loc_string = string_holder.c_str (); | |
1316 | } | |
c14c28ba | 1317 | else |
3b9d3ac2 TT |
1318 | loc_string = msym_name; |
1319 | ||
1320 | gdb_assert (osect->objfile && objfile_name (osect->objfile)); | |
1321 | obj_name = objfile_name (osect->objfile); | |
1322 | ||
1323 | if (MULTI_OBJFILE_P ()) | |
1324 | if (pc_in_unmapped_range (addr, osect)) | |
1325 | if (section_is_overlay (osect)) | |
1326 | printf_filtered (_("%s in load address range of " | |
1327 | "%s overlay section %s of %s\n"), | |
1328 | loc_string, mapped, sec_name, obj_name); | |
1329 | else | |
1330 | printf_filtered (_("%s in load address range of " | |
1331 | "section %s of %s\n"), | |
1332 | loc_string, sec_name, obj_name); | |
1333 | else | |
1334 | if (section_is_overlay (osect)) | |
1335 | printf_filtered (_("%s in %s overlay section %s of %s\n"), | |
1336 | loc_string, mapped, sec_name, obj_name); | |
1337 | else | |
1338 | printf_filtered (_("%s in section %s of %s\n"), | |
1339 | loc_string, sec_name, obj_name); | |
c14c28ba | 1340 | else |
3b9d3ac2 TT |
1341 | if (pc_in_unmapped_range (addr, osect)) |
1342 | if (section_is_overlay (osect)) | |
1343 | printf_filtered (_("%s in load address range of %s overlay " | |
1344 | "section %s\n"), | |
1345 | loc_string, mapped, sec_name); | |
1346 | else | |
1347 | printf_filtered | |
1348 | (_("%s in load address range of section %s\n"), | |
1349 | loc_string, sec_name); | |
1350 | else | |
1351 | if (section_is_overlay (osect)) | |
1352 | printf_filtered (_("%s in %s overlay section %s\n"), | |
1353 | loc_string, mapped, sec_name); | |
1354 | else | |
1355 | printf_filtered (_("%s in section %s\n"), | |
1356 | loc_string, sec_name); | |
1357 | } | |
c5aa993b | 1358 | } |
c906108c | 1359 | if (matches == 0) |
a3f17187 | 1360 | printf_filtered (_("No symbol matches %s.\n"), arg); |
c906108c SS |
1361 | } |
1362 | ||
c906108c | 1363 | static void |
1d12d88f | 1364 | info_address_command (const char *exp, int from_tty) |
c906108c | 1365 | { |
768a979c UW |
1366 | struct gdbarch *gdbarch; |
1367 | int regno; | |
52f0bd74 | 1368 | struct symbol *sym; |
7c7b6655 | 1369 | struct bound_minimal_symbol msymbol; |
52f0bd74 | 1370 | long val; |
714835d5 | 1371 | struct obj_section *section; |
08922a10 | 1372 | CORE_ADDR load_addr, context_pc = 0; |
1993b719 | 1373 | struct field_of_this_result is_a_field_of_this; |
c906108c SS |
1374 | |
1375 | if (exp == 0) | |
8a3fe4f8 | 1376 | error (_("Argument required.")); |
c906108c | 1377 | |
08922a10 | 1378 | sym = lookup_symbol (exp, get_selected_block (&context_pc), VAR_DOMAIN, |
d12307c1 | 1379 | &is_a_field_of_this).symbol; |
c906108c SS |
1380 | if (sym == NULL) |
1381 | { | |
1993b719 | 1382 | if (is_a_field_of_this.type != NULL) |
c906108c SS |
1383 | { |
1384 | printf_filtered ("Symbol \""); | |
1385 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1386 | current_language->la_language, DMGL_ANSI); | |
e2b23ee9 AF |
1387 | printf_filtered ("\" is a field of the local class variable "); |
1388 | if (current_language->la_language == language_objc) | |
2625d86c | 1389 | printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */ |
e2b23ee9 | 1390 | else |
2625d86c | 1391 | printf_filtered ("`this'\n"); |
c906108c SS |
1392 | return; |
1393 | } | |
1394 | ||
7c7b6655 | 1395 | msymbol = lookup_bound_minimal_symbol (exp); |
c906108c | 1396 | |
7c7b6655 | 1397 | if (msymbol.minsym != NULL) |
c906108c | 1398 | { |
7c7b6655 | 1399 | struct objfile *objfile = msymbol.objfile; |
e27d198c TT |
1400 | |
1401 | gdbarch = get_objfile_arch (objfile); | |
77e371c0 | 1402 | load_addr = BMSYMBOL_VALUE_ADDRESS (msymbol); |
c906108c SS |
1403 | |
1404 | printf_filtered ("Symbol \""); | |
1405 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1406 | current_language->la_language, DMGL_ANSI); | |
1407 | printf_filtered ("\" is at "); | |
35fb8261 TT |
1408 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1409 | gdb_stdout); | |
c906108c | 1410 | printf_filtered (" in a file compiled without debugging"); |
efd66ac6 | 1411 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
c906108c SS |
1412 | if (section_is_overlay (section)) |
1413 | { | |
1414 | load_addr = overlay_unmapped_address (load_addr, section); | |
1415 | printf_filtered (",\n -- loaded at "); | |
35fb8261 TT |
1416 | fputs_styled (paddress (gdbarch, load_addr), |
1417 | address_style.style (), | |
1418 | gdb_stdout); | |
714835d5 UW |
1419 | printf_filtered (" in overlay section %s", |
1420 | section->the_bfd_section->name); | |
c906108c SS |
1421 | } |
1422 | printf_filtered (".\n"); | |
1423 | } | |
1424 | else | |
8a3fe4f8 | 1425 | error (_("No symbol \"%s\" in current context."), exp); |
c906108c SS |
1426 | return; |
1427 | } | |
1428 | ||
1429 | printf_filtered ("Symbol \""); | |
3567439c | 1430 | fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym), |
c906108c SS |
1431 | current_language->la_language, DMGL_ANSI); |
1432 | printf_filtered ("\" is "); | |
c5aa993b | 1433 | val = SYMBOL_VALUE (sym); |
1994afbf DE |
1434 | if (SYMBOL_OBJFILE_OWNED (sym)) |
1435 | section = SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym); | |
1436 | else | |
1437 | section = NULL; | |
08be3fe3 | 1438 | gdbarch = symbol_arch (sym); |
c906108c | 1439 | |
24d6c2a0 TT |
1440 | if (SYMBOL_COMPUTED_OPS (sym) != NULL) |
1441 | { | |
1442 | SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, context_pc, | |
1443 | gdb_stdout); | |
1444 | printf_filtered (".\n"); | |
1445 | return; | |
1446 | } | |
1447 | ||
c906108c SS |
1448 | switch (SYMBOL_CLASS (sym)) |
1449 | { | |
1450 | case LOC_CONST: | |
1451 | case LOC_CONST_BYTES: | |
1452 | printf_filtered ("constant"); | |
1453 | break; | |
1454 | ||
1455 | case LOC_LABEL: | |
1456 | printf_filtered ("a label at address "); | |
5af949e3 | 1457 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
35fb8261 TT |
1458 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1459 | gdb_stdout); | |
c906108c SS |
1460 | if (section_is_overlay (section)) |
1461 | { | |
1462 | load_addr = overlay_unmapped_address (load_addr, section); | |
1463 | printf_filtered (",\n -- loaded at "); | |
35fb8261 TT |
1464 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1465 | gdb_stdout); | |
714835d5 UW |
1466 | printf_filtered (" in overlay section %s", |
1467 | section->the_bfd_section->name); | |
c906108c SS |
1468 | } |
1469 | break; | |
1470 | ||
4c2df51b | 1471 | case LOC_COMPUTED: |
24d6c2a0 | 1472 | gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method")); |
4c2df51b | 1473 | |
c906108c | 1474 | case LOC_REGISTER: |
768a979c UW |
1475 | /* GDBARCH is the architecture associated with the objfile the symbol |
1476 | is defined in; the target architecture may be different, and may | |
1477 | provide additional registers. However, we do not know the target | |
1478 | architecture at this point. We assume the objfile architecture | |
1479 | will contain all the standard registers that occur in debug info | |
1480 | in that objfile. */ | |
1481 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
1482 | ||
2a2d4dc3 AS |
1483 | if (SYMBOL_IS_ARGUMENT (sym)) |
1484 | printf_filtered (_("an argument in register %s"), | |
768a979c | 1485 | gdbarch_register_name (gdbarch, regno)); |
2a2d4dc3 AS |
1486 | else |
1487 | printf_filtered (_("a variable in register %s"), | |
768a979c | 1488 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1489 | break; |
1490 | ||
1491 | case LOC_STATIC: | |
a3f17187 | 1492 | printf_filtered (_("static storage at address ")); |
5af949e3 | 1493 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
35fb8261 TT |
1494 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1495 | gdb_stdout); | |
c906108c SS |
1496 | if (section_is_overlay (section)) |
1497 | { | |
1498 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1499 | printf_filtered (_(",\n -- loaded at ")); |
35fb8261 TT |
1500 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1501 | gdb_stdout); | |
714835d5 UW |
1502 | printf_filtered (_(" in overlay section %s"), |
1503 | section->the_bfd_section->name); | |
c906108c SS |
1504 | } |
1505 | break; | |
1506 | ||
c906108c | 1507 | case LOC_REGPARM_ADDR: |
768a979c UW |
1508 | /* Note comment at LOC_REGISTER. */ |
1509 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
675dcf4f | 1510 | printf_filtered (_("address of an argument in register %s"), |
768a979c | 1511 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1512 | break; |
1513 | ||
1514 | case LOC_ARG: | |
a3f17187 | 1515 | printf_filtered (_("an argument at offset %ld"), val); |
c906108c SS |
1516 | break; |
1517 | ||
c906108c | 1518 | case LOC_LOCAL: |
a3f17187 | 1519 | printf_filtered (_("a local variable at frame offset %ld"), val); |
c906108c SS |
1520 | break; |
1521 | ||
1522 | case LOC_REF_ARG: | |
a3f17187 | 1523 | printf_filtered (_("a reference argument at offset %ld"), val); |
c906108c SS |
1524 | break; |
1525 | ||
c906108c | 1526 | case LOC_TYPEDEF: |
a3f17187 | 1527 | printf_filtered (_("a typedef")); |
c906108c SS |
1528 | break; |
1529 | ||
1530 | case LOC_BLOCK: | |
a3f17187 | 1531 | printf_filtered (_("a function at address ")); |
2b1ffcfd | 1532 | load_addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)); |
35fb8261 TT |
1533 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1534 | gdb_stdout); | |
c906108c SS |
1535 | if (section_is_overlay (section)) |
1536 | { | |
1537 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1538 | printf_filtered (_(",\n -- loaded at ")); |
35fb8261 TT |
1539 | fputs_styled (paddress (gdbarch, load_addr), address_style.style (), |
1540 | gdb_stdout); | |
714835d5 UW |
1541 | printf_filtered (_(" in overlay section %s"), |
1542 | section->the_bfd_section->name); | |
c906108c SS |
1543 | } |
1544 | break; | |
1545 | ||
1546 | case LOC_UNRESOLVED: | |
1547 | { | |
e27d198c | 1548 | struct bound_minimal_symbol msym; |
c906108c | 1549 | |
64cc34d8 | 1550 | msym = lookup_bound_minimal_symbol (SYMBOL_LINKAGE_NAME (sym)); |
e27d198c | 1551 | if (msym.minsym == NULL) |
c906108c SS |
1552 | printf_filtered ("unresolved"); |
1553 | else | |
1554 | { | |
efd66ac6 | 1555 | section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
e0740f77 JK |
1556 | |
1557 | if (section | |
1558 | && (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0) | |
5382cfab PW |
1559 | { |
1560 | load_addr = MSYMBOL_VALUE_RAW_ADDRESS (msym.minsym); | |
1561 | printf_filtered (_("a thread-local variable at offset %s " | |
1562 | "in the thread-local storage for `%s'"), | |
1563 | paddress (gdbarch, load_addr), | |
1564 | objfile_name (section->objfile)); | |
1565 | } | |
e0740f77 | 1566 | else |
c906108c | 1567 | { |
5382cfab | 1568 | load_addr = BMSYMBOL_VALUE_ADDRESS (msym); |
e0740f77 | 1569 | printf_filtered (_("static storage at address ")); |
35fb8261 TT |
1570 | fputs_styled (paddress (gdbarch, load_addr), |
1571 | address_style.style (), gdb_stdout); | |
e0740f77 JK |
1572 | if (section_is_overlay (section)) |
1573 | { | |
1574 | load_addr = overlay_unmapped_address (load_addr, section); | |
1575 | printf_filtered (_(",\n -- loaded at ")); | |
35fb8261 TT |
1576 | fputs_styled (paddress (gdbarch, load_addr), |
1577 | address_style.style (), | |
1578 | gdb_stdout); | |
e0740f77 JK |
1579 | printf_filtered (_(" in overlay section %s"), |
1580 | section->the_bfd_section->name); | |
1581 | } | |
c906108c SS |
1582 | } |
1583 | } | |
1584 | } | |
1585 | break; | |
1586 | ||
c906108c | 1587 | case LOC_OPTIMIZED_OUT: |
a3f17187 | 1588 | printf_filtered (_("optimized out")); |
c906108c | 1589 | break; |
c5aa993b | 1590 | |
c906108c | 1591 | default: |
a3f17187 | 1592 | printf_filtered (_("of unknown (botched) type")); |
c906108c SS |
1593 | break; |
1594 | } | |
1595 | printf_filtered (".\n"); | |
1596 | } | |
1597 | \f | |
675dcf4f MK |
1598 | |
1599 | static void | |
0b39b52e | 1600 | x_command (const char *exp, int from_tty) |
c906108c | 1601 | { |
c906108c | 1602 | struct format_data fmt; |
c906108c SS |
1603 | struct value *val; |
1604 | ||
a6bac58e | 1605 | fmt.format = last_format ? last_format : 'x'; |
c906108c SS |
1606 | fmt.size = last_size; |
1607 | fmt.count = 1; | |
a6bac58e | 1608 | fmt.raw = 0; |
c906108c | 1609 | |
9be2ae8f TT |
1610 | /* If there is no expression and no format, use the most recent |
1611 | count. */ | |
1612 | if (exp == nullptr && last_count > 0) | |
1613 | fmt.count = last_count; | |
1614 | ||
c906108c SS |
1615 | if (exp && *exp == '/') |
1616 | { | |
6f937416 PA |
1617 | const char *tmp = exp + 1; |
1618 | ||
1619 | fmt = decode_format (&tmp, last_format, last_size); | |
1620 | exp = (char *) tmp; | |
c906108c SS |
1621 | } |
1622 | ||
9be2ae8f TT |
1623 | last_count = fmt.count; |
1624 | ||
c906108c SS |
1625 | /* If we have an expression, evaluate it and use it as the address. */ |
1626 | ||
1627 | if (exp != 0 && *exp != 0) | |
1628 | { | |
4d01a485 | 1629 | expression_up expr = parse_expression (exp); |
675dcf4f MK |
1630 | /* Cause expression not to be there any more if this command is |
1631 | repeated with Newline. But don't clobber a user-defined | |
1632 | command's definition. */ | |
c906108c | 1633 | if (from_tty) |
85c4be7c | 1634 | set_repeat_arguments (""); |
4d01a485 | 1635 | val = evaluate_expression (expr.get ()); |
aa006118 | 1636 | if (TYPE_IS_REFERENCE (value_type (val))) |
e1c34c5d | 1637 | val = coerce_ref (val); |
c906108c | 1638 | /* In rvalue contexts, such as this, functions are coerced into |
c5aa993b | 1639 | pointers to functions. This makes "x/i main" work. */ |
c0d8fd9a | 1640 | if (/* last_format == 'i' && */ |
df407dfe | 1641 | TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC |
c5aa993b | 1642 | && VALUE_LVAL (val) == lval_memory) |
42ae5230 | 1643 | next_address = value_address (val); |
c906108c | 1644 | else |
1aa20aa8 | 1645 | next_address = value_as_address (val); |
5d3729b5 UW |
1646 | |
1647 | next_gdbarch = expr->gdbarch; | |
c906108c SS |
1648 | } |
1649 | ||
5d3729b5 UW |
1650 | if (!next_gdbarch) |
1651 | error_no_arg (_("starting display address")); | |
1652 | ||
1653 | do_examine (fmt, next_gdbarch, next_address); | |
c906108c | 1654 | |
675dcf4f | 1655 | /* If the examine succeeds, we remember its size and format for next |
9a22f0d0 PM |
1656 | time. Set last_size to 'b' for strings. */ |
1657 | if (fmt.format == 's') | |
1658 | last_size = 'b'; | |
1659 | else | |
1660 | last_size = fmt.size; | |
c906108c SS |
1661 | last_format = fmt.format; |
1662 | ||
0df8b418 | 1663 | /* Set a couple of internal variables if appropriate. */ |
9b558729 | 1664 | if (last_examine_value != nullptr) |
c906108c SS |
1665 | { |
1666 | /* Make last address examined available to the user as $_. Use | |
c5aa993b | 1667 | the correct pointer type. */ |
4478b372 | 1668 | struct type *pointer_type |
9b558729 | 1669 | = lookup_pointer_type (value_type (last_examine_value.get ())); |
c906108c | 1670 | set_internalvar (lookup_internalvar ("_"), |
4478b372 JB |
1671 | value_from_pointer (pointer_type, |
1672 | last_examine_address)); | |
c5aa993b | 1673 | |
675dcf4f MK |
1674 | /* Make contents of last address examined available to the user |
1675 | as $__. If the last value has not been fetched from memory | |
1676 | then don't fetch it now; instead mark it by voiding the $__ | |
1677 | variable. */ | |
9b558729 | 1678 | if (value_lazy (last_examine_value.get ())) |
4fa62494 | 1679 | clear_internalvar (lookup_internalvar ("__")); |
c906108c | 1680 | else |
9b558729 | 1681 | set_internalvar (lookup_internalvar ("__"), last_examine_value.get ()); |
c906108c SS |
1682 | } |
1683 | } | |
c906108c | 1684 | \f |
c5aa993b | 1685 | |
c906108c SS |
1686 | /* Add an expression to the auto-display chain. |
1687 | Specify the expression. */ | |
1688 | ||
1689 | static void | |
0b39b52e | 1690 | display_command (const char *arg, int from_tty) |
c906108c SS |
1691 | { |
1692 | struct format_data fmt; | |
fe978cb0 | 1693 | struct display *newobj; |
6f937416 | 1694 | const char *exp = arg; |
c906108c | 1695 | |
7bd0be3a | 1696 | if (exp == 0) |
c906108c | 1697 | { |
7bd0be3a AB |
1698 | do_displays (); |
1699 | return; | |
1700 | } | |
c906108c | 1701 | |
7bd0be3a AB |
1702 | if (*exp == '/') |
1703 | { | |
1704 | exp++; | |
1705 | fmt = decode_format (&exp, 0, 0); | |
1706 | if (fmt.size && fmt.format == 0) | |
1707 | fmt.format = 'x'; | |
1708 | if (fmt.format == 'i' || fmt.format == 's') | |
1709 | fmt.size = 'b'; | |
1710 | } | |
1711 | else | |
1712 | { | |
1713 | fmt.format = 0; | |
1714 | fmt.size = 0; | |
1715 | fmt.count = 0; | |
1716 | fmt.raw = 0; | |
1717 | } | |
c906108c | 1718 | |
aee1fcdf | 1719 | innermost_block.reset (); |
4d01a485 | 1720 | expression_up expr = parse_expression (exp); |
c906108c | 1721 | |
4d01a485 | 1722 | newobj = new display (); |
c906108c | 1723 | |
7bd0be3a | 1724 | newobj->exp_string = xstrdup (exp); |
b22e99fd | 1725 | newobj->exp = std::move (expr); |
aee1fcdf | 1726 | newobj->block = innermost_block.block (); |
7bd0be3a | 1727 | newobj->pspace = current_program_space; |
7bd0be3a AB |
1728 | newobj->number = ++display_number; |
1729 | newobj->format = fmt; | |
1730 | newobj->enabled_p = 1; | |
62147a22 PA |
1731 | newobj->next = NULL; |
1732 | ||
1733 | if (display_chain == NULL) | |
1734 | display_chain = newobj; | |
1735 | else | |
1736 | { | |
1737 | struct display *last; | |
1738 | ||
1739 | for (last = display_chain; last->next != NULL; last = last->next) | |
1740 | ; | |
1741 | last->next = newobj; | |
1742 | } | |
c906108c | 1743 | |
7bd0be3a AB |
1744 | if (from_tty) |
1745 | do_one_display (newobj); | |
c906108c | 1746 | |
7bd0be3a | 1747 | dont_repeat (); |
c906108c SS |
1748 | } |
1749 | ||
1750 | static void | |
fba45db2 | 1751 | free_display (struct display *d) |
c906108c | 1752 | { |
fa8a61dc | 1753 | xfree (d->exp_string); |
4d01a485 | 1754 | delete d; |
c906108c SS |
1755 | } |
1756 | ||
675dcf4f MK |
1757 | /* Clear out the display_chain. Done when new symtabs are loaded, |
1758 | since this invalidates the types stored in many expressions. */ | |
c906108c SS |
1759 | |
1760 | void | |
fba45db2 | 1761 | clear_displays (void) |
c906108c | 1762 | { |
52f0bd74 | 1763 | struct display *d; |
c906108c SS |
1764 | |
1765 | while ((d = display_chain) != NULL) | |
1766 | { | |
c906108c | 1767 | display_chain = d->next; |
fa8a61dc | 1768 | free_display (d); |
c906108c SS |
1769 | } |
1770 | } | |
1771 | ||
3c3fe74c | 1772 | /* Delete the auto-display DISPLAY. */ |
c906108c SS |
1773 | |
1774 | static void | |
3c3fe74c | 1775 | delete_display (struct display *display) |
c906108c | 1776 | { |
3c3fe74c | 1777 | struct display *d; |
c906108c | 1778 | |
3c3fe74c | 1779 | gdb_assert (display != NULL); |
c906108c | 1780 | |
3c3fe74c PA |
1781 | if (display_chain == display) |
1782 | display_chain = display->next; | |
1783 | ||
1784 | ALL_DISPLAYS (d) | |
1785 | if (d->next == display) | |
c906108c | 1786 | { |
3c3fe74c PA |
1787 | d->next = display->next; |
1788 | break; | |
c906108c | 1789 | } |
3c3fe74c PA |
1790 | |
1791 | free_display (display); | |
c906108c SS |
1792 | } |
1793 | ||
c9174737 PA |
1794 | /* Call FUNCTION on each of the displays whose numbers are given in |
1795 | ARGS. DATA is passed unmodified to FUNCTION. */ | |
c906108c SS |
1796 | |
1797 | static void | |
77763700 | 1798 | map_display_numbers (const char *args, |
c9174737 PA |
1799 | void (*function) (struct display *, |
1800 | void *), | |
1801 | void *data) | |
c906108c | 1802 | { |
c9174737 | 1803 | int num; |
c906108c | 1804 | |
c9174737 PA |
1805 | if (args == NULL) |
1806 | error_no_arg (_("one or more display numbers")); | |
c906108c | 1807 | |
bfd28288 | 1808 | number_or_range_parser parser (args); |
c9174737 | 1809 | |
bfd28288 | 1810 | while (!parser.finished ()) |
c906108c | 1811 | { |
bfd28288 | 1812 | const char *p = parser.cur_tok (); |
c906108c | 1813 | |
bfd28288 | 1814 | num = parser.get_number (); |
3c3fe74c PA |
1815 | if (num == 0) |
1816 | warning (_("bad display number at or near '%s'"), p); | |
1817 | else | |
1818 | { | |
c9174737 | 1819 | struct display *d, *tmp; |
c906108c | 1820 | |
c9174737 | 1821 | ALL_DISPLAYS_SAFE (d, tmp) |
3c3fe74c PA |
1822 | if (d->number == num) |
1823 | break; | |
1824 | if (d == NULL) | |
1825 | printf_unfiltered (_("No display number %d.\n"), num); | |
1826 | else | |
c9174737 | 1827 | function (d, data); |
3c3fe74c | 1828 | } |
c906108c | 1829 | } |
c9174737 PA |
1830 | } |
1831 | ||
1832 | /* Callback for map_display_numbers, that deletes a display. */ | |
1833 | ||
1834 | static void | |
1835 | do_delete_display (struct display *d, void *data) | |
1836 | { | |
1837 | delete_display (d); | |
1838 | } | |
1839 | ||
1840 | /* "undisplay" command. */ | |
1841 | ||
1842 | static void | |
77763700 | 1843 | undisplay_command (const char *args, int from_tty) |
c9174737 | 1844 | { |
c9174737 PA |
1845 | if (args == NULL) |
1846 | { | |
1847 | if (query (_("Delete all auto-display expressions? "))) | |
1848 | clear_displays (); | |
1849 | dont_repeat (); | |
1850 | return; | |
1851 | } | |
1852 | ||
1853 | map_display_numbers (args, do_delete_display, NULL); | |
c906108c SS |
1854 | dont_repeat (); |
1855 | } | |
1856 | ||
1857 | /* Display a single auto-display. | |
1858 | Do nothing if the display cannot be printed in the current context, | |
0df8b418 | 1859 | or if the display is disabled. */ |
c906108c SS |
1860 | |
1861 | static void | |
fba45db2 | 1862 | do_one_display (struct display *d) |
c906108c SS |
1863 | { |
1864 | int within_current_scope; | |
1865 | ||
b5de0fa7 | 1866 | if (d->enabled_p == 0) |
c906108c SS |
1867 | return; |
1868 | ||
704e9165 UW |
1869 | /* The expression carries the architecture that was used at parse time. |
1870 | This is a problem if the expression depends on architecture features | |
1871 | (e.g. register numbers), and the current architecture is now different. | |
1872 | For example, a display statement like "display/i $pc" is expected to | |
1873 | display the PC register of the current architecture, not the arch at | |
1874 | the time the display command was given. Therefore, we re-parse the | |
1875 | expression if the current architecture has changed. */ | |
1876 | if (d->exp != NULL && d->exp->gdbarch != get_current_arch ()) | |
1877 | { | |
4d01a485 | 1878 | d->exp.reset (); |
704e9165 UW |
1879 | d->block = NULL; |
1880 | } | |
1881 | ||
a3247a22 PP |
1882 | if (d->exp == NULL) |
1883 | { | |
ad3bbd48 | 1884 | |
492d29ea | 1885 | TRY |
a3247a22 | 1886 | { |
aee1fcdf | 1887 | innermost_block.reset (); |
a3247a22 | 1888 | d->exp = parse_expression (d->exp_string); |
aee1fcdf | 1889 | d->block = innermost_block.block (); |
a3247a22 | 1890 | } |
492d29ea | 1891 | CATCH (ex, RETURN_MASK_ALL) |
a3247a22 PP |
1892 | { |
1893 | /* Can't re-parse the expression. Disable this display item. */ | |
1894 | d->enabled_p = 0; | |
1895 | warning (_("Unable to display \"%s\": %s"), | |
1896 | d->exp_string, ex.message); | |
1897 | return; | |
1898 | } | |
492d29ea | 1899 | END_CATCH |
a3247a22 PP |
1900 | } |
1901 | ||
c906108c | 1902 | if (d->block) |
6c95b8df PA |
1903 | { |
1904 | if (d->pspace == current_program_space) | |
1905 | within_current_scope = contained_in (get_selected_block (0), d->block); | |
1906 | else | |
1907 | within_current_scope = 0; | |
1908 | } | |
c906108c SS |
1909 | else |
1910 | within_current_scope = 1; | |
1911 | if (!within_current_scope) | |
1912 | return; | |
1913 | ||
b7b633e9 TT |
1914 | scoped_restore save_display_number |
1915 | = make_scoped_restore (¤t_display_number, d->number); | |
c906108c SS |
1916 | |
1917 | annotate_display_begin (); | |
1918 | printf_filtered ("%d", d->number); | |
1919 | annotate_display_number_end (); | |
1920 | printf_filtered (": "); | |
1921 | if (d->format.size) | |
1922 | { | |
c906108c SS |
1923 | |
1924 | annotate_display_format (); | |
1925 | ||
1926 | printf_filtered ("x/"); | |
1927 | if (d->format.count != 1) | |
1928 | printf_filtered ("%d", d->format.count); | |
1929 | printf_filtered ("%c", d->format.format); | |
1930 | if (d->format.format != 'i' && d->format.format != 's') | |
1931 | printf_filtered ("%c", d->format.size); | |
1932 | printf_filtered (" "); | |
1933 | ||
1934 | annotate_display_expression (); | |
1935 | ||
fa8a61dc | 1936 | puts_filtered (d->exp_string); |
c906108c SS |
1937 | annotate_display_expression_end (); |
1938 | ||
6a2eb474 | 1939 | if (d->format.count != 1 || d->format.format == 'i') |
c906108c SS |
1940 | printf_filtered ("\n"); |
1941 | else | |
1942 | printf_filtered (" "); | |
c5aa993b | 1943 | |
c906108c SS |
1944 | annotate_display_value (); |
1945 | ||
492d29ea | 1946 | TRY |
9d8fa392 PA |
1947 | { |
1948 | struct value *val; | |
1949 | CORE_ADDR addr; | |
1950 | ||
4d01a485 | 1951 | val = evaluate_expression (d->exp.get ()); |
9d8fa392 PA |
1952 | addr = value_as_address (val); |
1953 | if (d->format.format == 'i') | |
1954 | addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr); | |
1955 | do_examine (d->format, d->exp->gdbarch, addr); | |
1956 | } | |
492d29ea PA |
1957 | CATCH (ex, RETURN_MASK_ERROR) |
1958 | { | |
1959 | fprintf_filtered (gdb_stdout, _("<error: %s>\n"), ex.message); | |
1960 | } | |
1961 | END_CATCH | |
c906108c SS |
1962 | } |
1963 | else | |
1964 | { | |
79a45b7d TT |
1965 | struct value_print_options opts; |
1966 | ||
c906108c SS |
1967 | annotate_display_format (); |
1968 | ||
1969 | if (d->format.format) | |
1970 | printf_filtered ("/%c ", d->format.format); | |
1971 | ||
1972 | annotate_display_expression (); | |
1973 | ||
fa8a61dc | 1974 | puts_filtered (d->exp_string); |
c906108c SS |
1975 | annotate_display_expression_end (); |
1976 | ||
1977 | printf_filtered (" = "); | |
1978 | ||
1979 | annotate_display_expression (); | |
1980 | ||
79a45b7d | 1981 | get_formatted_print_options (&opts, d->format.format); |
a6bac58e | 1982 | opts.raw = d->format.raw; |
9d8fa392 | 1983 | |
492d29ea | 1984 | TRY |
9d8fa392 PA |
1985 | { |
1986 | struct value *val; | |
1987 | ||
4d01a485 | 1988 | val = evaluate_expression (d->exp.get ()); |
9d8fa392 PA |
1989 | print_formatted (val, d->format.size, &opts, gdb_stdout); |
1990 | } | |
492d29ea PA |
1991 | CATCH (ex, RETURN_MASK_ERROR) |
1992 | { | |
1993 | fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.message); | |
1994 | } | |
1995 | END_CATCH | |
1996 | ||
c906108c SS |
1997 | printf_filtered ("\n"); |
1998 | } | |
1999 | ||
2000 | annotate_display_end (); | |
2001 | ||
2002 | gdb_flush (gdb_stdout); | |
c906108c SS |
2003 | } |
2004 | ||
2005 | /* Display all of the values on the auto-display chain which can be | |
2006 | evaluated in the current scope. */ | |
2007 | ||
2008 | void | |
fba45db2 | 2009 | do_displays (void) |
c906108c | 2010 | { |
52f0bd74 | 2011 | struct display *d; |
c906108c SS |
2012 | |
2013 | for (d = display_chain; d; d = d->next) | |
2014 | do_one_display (d); | |
2015 | } | |
2016 | ||
2017 | /* Delete the auto-display which we were in the process of displaying. | |
2018 | This is done when there is an error or a signal. */ | |
2019 | ||
2020 | void | |
fba45db2 | 2021 | disable_display (int num) |
c906108c | 2022 | { |
52f0bd74 | 2023 | struct display *d; |
c906108c SS |
2024 | |
2025 | for (d = display_chain; d; d = d->next) | |
2026 | if (d->number == num) | |
2027 | { | |
b5de0fa7 | 2028 | d->enabled_p = 0; |
c906108c SS |
2029 | return; |
2030 | } | |
a3f17187 | 2031 | printf_unfiltered (_("No display number %d.\n"), num); |
c906108c | 2032 | } |
c5aa993b | 2033 | |
c906108c | 2034 | void |
fba45db2 | 2035 | disable_current_display (void) |
c906108c SS |
2036 | { |
2037 | if (current_display_number >= 0) | |
2038 | { | |
2039 | disable_display (current_display_number); | |
3e43a32a MS |
2040 | fprintf_unfiltered (gdb_stderr, |
2041 | _("Disabling display %d to " | |
2042 | "avoid infinite recursion.\n"), | |
c5aa993b | 2043 | current_display_number); |
c906108c SS |
2044 | } |
2045 | current_display_number = -1; | |
2046 | } | |
2047 | ||
2048 | static void | |
1d12d88f | 2049 | info_display_command (const char *ignore, int from_tty) |
c906108c | 2050 | { |
52f0bd74 | 2051 | struct display *d; |
c906108c SS |
2052 | |
2053 | if (!display_chain) | |
a3f17187 | 2054 | printf_unfiltered (_("There are no auto-display expressions now.\n")); |
c906108c | 2055 | else |
a3f17187 AC |
2056 | printf_filtered (_("Auto-display expressions now in effect:\n\ |
2057 | Num Enb Expression\n")); | |
c906108c SS |
2058 | |
2059 | for (d = display_chain; d; d = d->next) | |
2060 | { | |
b5de0fa7 | 2061 | printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]); |
c906108c SS |
2062 | if (d->format.size) |
2063 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
c5aa993b | 2064 | d->format.format); |
c906108c SS |
2065 | else if (d->format.format) |
2066 | printf_filtered ("/%c ", d->format.format); | |
fa8a61dc | 2067 | puts_filtered (d->exp_string); |
ae767bfb | 2068 | if (d->block && !contained_in (get_selected_block (0), d->block)) |
a3f17187 | 2069 | printf_filtered (_(" (cannot be evaluated in the current context)")); |
c906108c SS |
2070 | printf_filtered ("\n"); |
2071 | gdb_flush (gdb_stdout); | |
2072 | } | |
2073 | } | |
2074 | ||
c9174737 PA |
2075 | /* Callback fo map_display_numbers, that enables or disables the |
2076 | passed in display D. */ | |
2077 | ||
c906108c | 2078 | static void |
c9174737 | 2079 | do_enable_disable_display (struct display *d, void *data) |
c906108c | 2080 | { |
c9174737 PA |
2081 | d->enabled_p = *(int *) data; |
2082 | } | |
c906108c | 2083 | |
c9174737 PA |
2084 | /* Implamentation of both the "disable display" and "enable display" |
2085 | commands. ENABLE decides what to do. */ | |
2086 | ||
2087 | static void | |
77763700 | 2088 | enable_disable_display_command (const char *args, int from_tty, int enable) |
c9174737 PA |
2089 | { |
2090 | if (args == NULL) | |
c906108c | 2091 | { |
c9174737 | 2092 | struct display *d; |
c5aa993b | 2093 | |
c9174737 PA |
2094 | ALL_DISPLAYS (d) |
2095 | d->enabled_p = enable; | |
2096 | return; | |
2097 | } | |
c5aa993b | 2098 | |
c9174737 | 2099 | map_display_numbers (args, do_enable_disable_display, &enable); |
c906108c SS |
2100 | } |
2101 | ||
c9174737 PA |
2102 | /* The "enable display" command. */ |
2103 | ||
c906108c | 2104 | static void |
77763700 | 2105 | enable_display_command (const char *args, int from_tty) |
c906108c | 2106 | { |
c9174737 PA |
2107 | enable_disable_display_command (args, from_tty, 1); |
2108 | } | |
c5aa993b | 2109 | |
c9174737 | 2110 | /* The "disable display" command. */ |
c906108c | 2111 | |
c9174737 | 2112 | static void |
77763700 | 2113 | disable_display_command (const char *args, int from_tty) |
c9174737 PA |
2114 | { |
2115 | enable_disable_display_command (args, from_tty, 0); | |
c906108c | 2116 | } |
a3247a22 | 2117 | |
a3247a22 PP |
2118 | /* display_chain items point to blocks and expressions. Some expressions in |
2119 | turn may point to symbols. | |
2120 | Both symbols and blocks are obstack_alloc'd on objfile_stack, and are | |
2121 | obstack_free'd when a shared library is unloaded. | |
2122 | Clear pointers that are about to become dangling. | |
2123 | Both .exp and .block fields will be restored next time we need to display | |
2124 | an item by re-parsing .exp_string field in the new execution context. */ | |
2125 | ||
2126 | static void | |
63644780 | 2127 | clear_dangling_display_expressions (struct objfile *objfile) |
a3247a22 PP |
2128 | { |
2129 | struct display *d; | |
63644780 | 2130 | struct program_space *pspace; |
a3247a22 | 2131 | |
c0201579 JK |
2132 | /* With no symbol file we cannot have a block or expression from it. */ |
2133 | if (objfile == NULL) | |
2134 | return; | |
63644780 | 2135 | pspace = objfile->pspace; |
c0201579 | 2136 | if (objfile->separate_debug_objfile_backlink) |
63644780 NB |
2137 | { |
2138 | objfile = objfile->separate_debug_objfile_backlink; | |
2139 | gdb_assert (objfile->pspace == pspace); | |
2140 | } | |
c0201579 JK |
2141 | |
2142 | for (d = display_chain; d != NULL; d = d->next) | |
a3247a22 | 2143 | { |
63644780 | 2144 | if (d->pspace != pspace) |
c0201579 JK |
2145 | continue; |
2146 | ||
2147 | if (lookup_objfile_from_block (d->block) == objfile | |
4d01a485 | 2148 | || (d->exp != NULL && exp_uses_objfile (d->exp.get (), objfile))) |
c0201579 | 2149 | { |
4d01a485 | 2150 | d->exp.reset (); |
c0201579 JK |
2151 | d->block = NULL; |
2152 | } | |
a3247a22 PP |
2153 | } |
2154 | } | |
c906108c | 2155 | \f |
c5aa993b | 2156 | |
675dcf4f | 2157 | /* Print the value in stack frame FRAME of a variable specified by a |
aad95b57 TT |
2158 | struct symbol. NAME is the name to print; if NULL then VAR's print |
2159 | name will be used. STREAM is the ui_file on which to print the | |
2160 | value. INDENT specifies the number of indent levels to print | |
8f043999 JK |
2161 | before printing the variable name. |
2162 | ||
2163 | This function invalidates FRAME. */ | |
c906108c SS |
2164 | |
2165 | void | |
aad95b57 TT |
2166 | print_variable_and_value (const char *name, struct symbol *var, |
2167 | struct frame_info *frame, | |
2168 | struct ui_file *stream, int indent) | |
c906108c | 2169 | { |
c906108c | 2170 | |
aad95b57 TT |
2171 | if (!name) |
2172 | name = SYMBOL_PRINT_NAME (var); | |
2173 | ||
80ae2043 TT |
2174 | fputs_filtered (n_spaces (2 * indent), stream); |
2175 | fputs_styled (name, variable_name_style.style (), stream); | |
2176 | fputs_filtered (" = ", stream); | |
2177 | ||
492d29ea | 2178 | TRY |
0f6a939d PM |
2179 | { |
2180 | struct value *val; | |
2181 | struct value_print_options opts; | |
aad95b57 | 2182 | |
63e43d3a PMR |
2183 | /* READ_VAR_VALUE needs a block in order to deal with non-local |
2184 | references (i.e. to handle nested functions). In this context, we | |
2185 | print variables that are local to this frame, so we can avoid passing | |
2186 | a block to it. */ | |
2187 | val = read_var_value (var, NULL, frame); | |
0f6a939d | 2188 | get_user_print_options (&opts); |
3343315b | 2189 | opts.deref_ref = 1; |
0f6a939d | 2190 | common_val_print (val, stream, indent, &opts, current_language); |
8f043999 JK |
2191 | |
2192 | /* common_val_print invalidates FRAME when a pretty printer calls inferior | |
2193 | function. */ | |
2194 | frame = NULL; | |
0f6a939d | 2195 | } |
492d29ea PA |
2196 | CATCH (except, RETURN_MASK_ERROR) |
2197 | { | |
2198 | fprintf_filtered(stream, "<error reading variable %s (%s)>", name, | |
2199 | except.message); | |
2200 | } | |
2201 | END_CATCH | |
2202 | ||
aad95b57 | 2203 | fprintf_filtered (stream, "\n"); |
c906108c SS |
2204 | } |
2205 | ||
c2792f5a DE |
2206 | /* Subroutine of ui_printf to simplify it. |
2207 | Print VALUE to STREAM using FORMAT. | |
e12f57ab | 2208 | VALUE is a C-style string on the target. */ |
c2792f5a DE |
2209 | |
2210 | static void | |
2211 | printf_c_string (struct ui_file *stream, const char *format, | |
2212 | struct value *value) | |
2213 | { | |
2214 | gdb_byte *str; | |
2215 | CORE_ADDR tem; | |
2216 | int j; | |
2217 | ||
2218 | tem = value_as_address (value); | |
3ae9ce5d TT |
2219 | if (tem == 0) |
2220 | { | |
af39b1c2 SM |
2221 | DIAGNOSTIC_PUSH |
2222 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
3ae9ce5d | 2223 | fprintf_filtered (stream, format, "(null)"); |
af39b1c2 | 2224 | DIAGNOSTIC_POP |
3ae9ce5d TT |
2225 | return; |
2226 | } | |
c2792f5a DE |
2227 | |
2228 | /* This is a %s argument. Find the length of the string. */ | |
2229 | for (j = 0;; j++) | |
2230 | { | |
2231 | gdb_byte c; | |
2232 | ||
2233 | QUIT; | |
2234 | read_memory (tem + j, &c, 1); | |
2235 | if (c == 0) | |
2236 | break; | |
2237 | } | |
2238 | ||
2239 | /* Copy the string contents into a string inside GDB. */ | |
2240 | str = (gdb_byte *) alloca (j + 1); | |
2241 | if (j != 0) | |
2242 | read_memory (tem, str, j); | |
2243 | str[j] = 0; | |
2244 | ||
af39b1c2 SM |
2245 | DIAGNOSTIC_PUSH |
2246 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2247 | fprintf_filtered (stream, format, (char *) str); |
af39b1c2 | 2248 | DIAGNOSTIC_POP |
c2792f5a DE |
2249 | } |
2250 | ||
2251 | /* Subroutine of ui_printf to simplify it. | |
2252 | Print VALUE to STREAM using FORMAT. | |
e12f57ab | 2253 | VALUE is a wide C-style string on the target. */ |
c2792f5a DE |
2254 | |
2255 | static void | |
2256 | printf_wide_c_string (struct ui_file *stream, const char *format, | |
2257 | struct value *value) | |
2258 | { | |
2259 | gdb_byte *str; | |
2260 | CORE_ADDR tem; | |
2261 | int j; | |
2262 | struct gdbarch *gdbarch = get_type_arch (value_type (value)); | |
2263 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
2264 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
2265 | "wchar_t", NULL, 0); | |
2266 | int wcwidth = TYPE_LENGTH (wctype); | |
224c3ddb | 2267 | gdb_byte *buf = (gdb_byte *) alloca (wcwidth); |
c2792f5a DE |
2268 | |
2269 | tem = value_as_address (value); | |
3ae9ce5d TT |
2270 | if (tem == 0) |
2271 | { | |
af39b1c2 SM |
2272 | DIAGNOSTIC_PUSH |
2273 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
3ae9ce5d | 2274 | fprintf_filtered (stream, format, "(null)"); |
af39b1c2 | 2275 | DIAGNOSTIC_POP |
3ae9ce5d TT |
2276 | return; |
2277 | } | |
c2792f5a DE |
2278 | |
2279 | /* This is a %s argument. Find the length of the string. */ | |
2280 | for (j = 0;; j += wcwidth) | |
2281 | { | |
2282 | QUIT; | |
2283 | read_memory (tem + j, buf, wcwidth); | |
2284 | if (extract_unsigned_integer (buf, wcwidth, byte_order) == 0) | |
2285 | break; | |
2286 | } | |
2287 | ||
2288 | /* Copy the string contents into a string inside GDB. */ | |
2289 | str = (gdb_byte *) alloca (j + wcwidth); | |
2290 | if (j != 0) | |
2291 | read_memory (tem, str, j); | |
2292 | memset (&str[j], 0, wcwidth); | |
2293 | ||
8268c778 | 2294 | auto_obstack output; |
c2792f5a DE |
2295 | |
2296 | convert_between_encodings (target_wide_charset (gdbarch), | |
2297 | host_charset (), | |
2298 | str, j, wcwidth, | |
2299 | &output, translit_char); | |
2300 | obstack_grow_str0 (&output, ""); | |
2301 | ||
af39b1c2 SM |
2302 | DIAGNOSTIC_PUSH |
2303 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2304 | fprintf_filtered (stream, format, obstack_base (&output)); |
af39b1c2 | 2305 | DIAGNOSTIC_POP |
c2792f5a DE |
2306 | } |
2307 | ||
2308 | /* Subroutine of ui_printf to simplify it. | |
16e812b2 | 2309 | Print VALUE, a floating point value, to STREAM using FORMAT. */ |
c2792f5a DE |
2310 | |
2311 | static void | |
16e812b2 UW |
2312 | printf_floating (struct ui_file *stream, const char *format, |
2313 | struct value *value, enum argclass argclass) | |
c2792f5a | 2314 | { |
c2792f5a DE |
2315 | /* Parameter data. */ |
2316 | struct type *param_type = value_type (value); | |
2317 | struct gdbarch *gdbarch = get_type_arch (param_type); | |
c2792f5a | 2318 | |
16e812b2 UW |
2319 | /* Determine target type corresponding to the format string. */ |
2320 | struct type *fmt_type; | |
2321 | switch (argclass) | |
c2792f5a | 2322 | { |
16e812b2 UW |
2323 | case double_arg: |
2324 | fmt_type = builtin_type (gdbarch)->builtin_double; | |
2325 | break; | |
2326 | case long_double_arg: | |
2327 | fmt_type = builtin_type (gdbarch)->builtin_long_double; | |
2328 | break; | |
2329 | case dec32float_arg: | |
2330 | fmt_type = builtin_type (gdbarch)->builtin_decfloat; | |
2331 | break; | |
2332 | case dec64float_arg: | |
2333 | fmt_type = builtin_type (gdbarch)->builtin_decdouble; | |
2334 | break; | |
2335 | case dec128float_arg: | |
2336 | fmt_type = builtin_type (gdbarch)->builtin_declong; | |
2337 | break; | |
2338 | default: | |
2339 | gdb_assert_not_reached ("unexpected argument class"); | |
c2792f5a DE |
2340 | } |
2341 | ||
16e812b2 UW |
2342 | /* To match the traditional GDB behavior, the conversion is |
2343 | done differently depending on the type of the parameter: | |
2344 | ||
2345 | - if the parameter has floating-point type, it's value | |
2346 | is converted to the target type; | |
2347 | ||
2348 | - otherwise, if the parameter has a type that is of the | |
2349 | same size as a built-in floating-point type, the value | |
2350 | bytes are interpreted as if they were of that type, and | |
2351 | then converted to the target type (this is not done for | |
2352 | decimal floating-point argument classes); | |
2353 | ||
2354 | - otherwise, if the source value has an integer value, | |
2355 | it's value is converted to the target type; | |
c2792f5a | 2356 | |
16e812b2 | 2357 | - otherwise, an error is raised. |
c2792f5a | 2358 | |
16e812b2 UW |
2359 | In either case, the result of the conversion is a byte buffer |
2360 | formatted in the target format for the target type. */ | |
2361 | ||
2362 | if (TYPE_CODE (fmt_type) == TYPE_CODE_FLT) | |
2363 | { | |
2364 | param_type = float_type_from_length (param_type); | |
2365 | if (param_type != value_type (value)) | |
2366 | value = value_from_contents (param_type, value_contents (value)); | |
2367 | } | |
2368 | ||
2369 | value = value_cast (fmt_type, value); | |
c2792f5a | 2370 | |
3b4b2f16 | 2371 | /* Convert the value to a string and print it. */ |
f69fdf9b UW |
2372 | std::string str |
2373 | = target_float_to_string (value_contents (value), fmt_type, format); | |
3b4b2f16 | 2374 | fputs_filtered (str.c_str (), stream); |
c2792f5a DE |
2375 | } |
2376 | ||
2377 | /* Subroutine of ui_printf to simplify it. | |
2378 | Print VALUE, a target pointer, to STREAM using FORMAT. */ | |
2379 | ||
2380 | static void | |
2381 | printf_pointer (struct ui_file *stream, const char *format, | |
2382 | struct value *value) | |
2383 | { | |
2384 | /* We avoid the host's %p because pointers are too | |
2385 | likely to be the wrong size. The only interesting | |
2386 | modifier for %p is a width; extract that, and then | |
2387 | handle %p as glibc would: %#x or a literal "(nil)". */ | |
2388 | ||
2389 | const char *p; | |
2390 | char *fmt, *fmt_p; | |
2391 | #ifdef PRINTF_HAS_LONG_LONG | |
2392 | long long val = value_as_long (value); | |
2393 | #else | |
2394 | long val = value_as_long (value); | |
2395 | #endif | |
2396 | ||
224c3ddb | 2397 | fmt = (char *) alloca (strlen (format) + 5); |
c2792f5a DE |
2398 | |
2399 | /* Copy up to the leading %. */ | |
2400 | p = format; | |
2401 | fmt_p = fmt; | |
2402 | while (*p) | |
2403 | { | |
2404 | int is_percent = (*p == '%'); | |
2405 | ||
2406 | *fmt_p++ = *p++; | |
2407 | if (is_percent) | |
2408 | { | |
2409 | if (*p == '%') | |
2410 | *fmt_p++ = *p++; | |
2411 | else | |
2412 | break; | |
2413 | } | |
2414 | } | |
2415 | ||
2416 | if (val != 0) | |
2417 | *fmt_p++ = '#'; | |
2418 | ||
b8c2339b TT |
2419 | /* Copy any width or flags. Only the "-" flag is valid for pointers |
2420 | -- see the format_pieces constructor. */ | |
2421 | while (*p == '-' || (*p >= '0' && *p < '9')) | |
c2792f5a DE |
2422 | *fmt_p++ = *p++; |
2423 | ||
2424 | gdb_assert (*p == 'p' && *(p + 1) == '\0'); | |
2425 | if (val != 0) | |
2426 | { | |
2427 | #ifdef PRINTF_HAS_LONG_LONG | |
2428 | *fmt_p++ = 'l'; | |
2429 | #endif | |
2430 | *fmt_p++ = 'l'; | |
2431 | *fmt_p++ = 'x'; | |
2432 | *fmt_p++ = '\0'; | |
af39b1c2 SM |
2433 | DIAGNOSTIC_PUSH |
2434 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2435 | fprintf_filtered (stream, fmt, val); |
af39b1c2 | 2436 | DIAGNOSTIC_POP |
c2792f5a DE |
2437 | } |
2438 | else | |
2439 | { | |
2440 | *fmt_p++ = 's'; | |
2441 | *fmt_p++ = '\0'; | |
af39b1c2 SM |
2442 | DIAGNOSTIC_PUSH |
2443 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
c2792f5a | 2444 | fprintf_filtered (stream, fmt, "(nil)"); |
af39b1c2 | 2445 | DIAGNOSTIC_POP |
c2792f5a DE |
2446 | } |
2447 | } | |
2448 | ||
a04b0428 JB |
2449 | /* printf "printf format string" ARG to STREAM. */ |
2450 | ||
2451 | static void | |
bbc13ae3 | 2452 | ui_printf (const char *arg, struct ui_file *stream) |
c906108c | 2453 | { |
bbc13ae3 | 2454 | const char *s = arg; |
8e481c3b | 2455 | std::vector<struct value *> val_args; |
c906108c SS |
2456 | |
2457 | if (s == 0) | |
e2e0b3e5 | 2458 | error_no_arg (_("format-control string and values to print")); |
c906108c | 2459 | |
f1735a53 | 2460 | s = skip_spaces (s); |
c906108c | 2461 | |
675dcf4f | 2462 | /* A format string should follow, enveloped in double quotes. */ |
c906108c | 2463 | if (*s++ != '"') |
8a3fe4f8 | 2464 | error (_("Bad format string, missing '\"'.")); |
c906108c | 2465 | |
8e481c3b | 2466 | format_pieces fpieces (&s); |
c906108c | 2467 | |
d3ce09f5 SS |
2468 | if (*s++ != '"') |
2469 | error (_("Bad format string, non-terminated '\"'.")); | |
2470 | ||
f1735a53 | 2471 | s = skip_spaces (s); |
c906108c SS |
2472 | |
2473 | if (*s != ',' && *s != 0) | |
8a3fe4f8 | 2474 | error (_("Invalid argument syntax")); |
c906108c | 2475 | |
c5aa993b JM |
2476 | if (*s == ',') |
2477 | s++; | |
f1735a53 | 2478 | s = skip_spaces (s); |
c906108c | 2479 | |
c906108c | 2480 | { |
c906108c | 2481 | int nargs_wanted; |
8e481c3b TT |
2482 | int i; |
2483 | const char *current_substring; | |
c906108c | 2484 | |
c906108c | 2485 | nargs_wanted = 0; |
8e481c3b TT |
2486 | for (auto &&piece : fpieces) |
2487 | if (piece.argclass != literal_piece) | |
d3ce09f5 | 2488 | ++nargs_wanted; |
c906108c SS |
2489 | |
2490 | /* Now, parse all arguments and evaluate them. | |
2491 | Store the VALUEs in VAL_ARGS. */ | |
2492 | ||
2493 | while (*s != '\0') | |
2494 | { | |
bbc13ae3 | 2495 | const char *s1; |
ad3bbd48 | 2496 | |
a04b0428 | 2497 | s1 = s; |
8e481c3b | 2498 | val_args.push_back (parse_to_comma_and_eval (&s1)); |
c5aa993b | 2499 | |
c906108c SS |
2500 | s = s1; |
2501 | if (*s == ',') | |
2502 | s++; | |
2503 | } | |
c5aa993b | 2504 | |
8e481c3b | 2505 | if (val_args.size () != nargs_wanted) |
8a3fe4f8 | 2506 | error (_("Wrong number of arguments for specified format-string")); |
c906108c SS |
2507 | |
2508 | /* Now actually print them. */ | |
d3ce09f5 | 2509 | i = 0; |
8e481c3b | 2510 | for (auto &&piece : fpieces) |
c906108c | 2511 | { |
8e481c3b TT |
2512 | current_substring = piece.string; |
2513 | switch (piece.argclass) | |
c906108c SS |
2514 | { |
2515 | case string_arg: | |
c2792f5a | 2516 | printf_c_string (stream, current_substring, val_args[i]); |
c906108c | 2517 | break; |
6c7a06a3 | 2518 | case wide_string_arg: |
c2792f5a | 2519 | printf_wide_c_string (stream, current_substring, val_args[i]); |
6c7a06a3 TT |
2520 | break; |
2521 | case wide_char_arg: | |
2522 | { | |
50810684 UW |
2523 | struct gdbarch *gdbarch |
2524 | = get_type_arch (value_type (val_args[i])); | |
2525 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
e6c014f2 | 2526 | "wchar_t", NULL, 0); |
6c7a06a3 | 2527 | struct type *valtype; |
6c7a06a3 TT |
2528 | const gdb_byte *bytes; |
2529 | ||
2530 | valtype = value_type (val_args[i]); | |
2531 | if (TYPE_LENGTH (valtype) != TYPE_LENGTH (wctype) | |
2532 | || TYPE_CODE (valtype) != TYPE_CODE_INT) | |
2533 | error (_("expected wchar_t argument for %%lc")); | |
2534 | ||
2535 | bytes = value_contents (val_args[i]); | |
2536 | ||
8268c778 | 2537 | auto_obstack output; |
6c7a06a3 | 2538 | |
f870a310 | 2539 | convert_between_encodings (target_wide_charset (gdbarch), |
6c7a06a3 TT |
2540 | host_charset (), |
2541 | bytes, TYPE_LENGTH (valtype), | |
2542 | TYPE_LENGTH (valtype), | |
2543 | &output, translit_char); | |
2544 | obstack_grow_str0 (&output, ""); | |
2545 | ||
af39b1c2 SM |
2546 | DIAGNOSTIC_PUSH |
2547 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 HZ |
2548 | fprintf_filtered (stream, current_substring, |
2549 | obstack_base (&output)); | |
af39b1c2 | 2550 | DIAGNOSTIC_POP |
6c7a06a3 TT |
2551 | } |
2552 | break; | |
c906108c | 2553 | case long_long_arg: |
74a0d9f6 | 2554 | #ifdef PRINTF_HAS_LONG_LONG |
c906108c SS |
2555 | { |
2556 | long long val = value_as_long (val_args[i]); | |
ad3bbd48 | 2557 | |
af39b1c2 SM |
2558 | DIAGNOSTIC_PUSH |
2559 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2560 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2561 | DIAGNOSTIC_POP |
c906108c SS |
2562 | break; |
2563 | } | |
2564 | #else | |
8a3fe4f8 | 2565 | error (_("long long not supported in printf")); |
c906108c SS |
2566 | #endif |
2567 | case int_arg: | |
2568 | { | |
46e9880c | 2569 | int val = value_as_long (val_args[i]); |
ad3bbd48 | 2570 | |
af39b1c2 SM |
2571 | DIAGNOSTIC_PUSH |
2572 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2573 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2574 | DIAGNOSTIC_POP |
46e9880c DJ |
2575 | break; |
2576 | } | |
2577 | case long_arg: | |
2578 | { | |
c906108c | 2579 | long val = value_as_long (val_args[i]); |
ad3bbd48 | 2580 | |
af39b1c2 SM |
2581 | DIAGNOSTIC_PUSH |
2582 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
f1421989 | 2583 | fprintf_filtered (stream, current_substring, val); |
af39b1c2 | 2584 | DIAGNOSTIC_POP |
c906108c SS |
2585 | break; |
2586 | } | |
16e812b2 UW |
2587 | /* Handles floating-point values. */ |
2588 | case double_arg: | |
2589 | case long_double_arg: | |
2590 | case dec32float_arg: | |
2591 | case dec64float_arg: | |
2592 | case dec128float_arg: | |
2593 | printf_floating (stream, current_substring, val_args[i], | |
8e481c3b | 2594 | piece.argclass); |
c2792f5a | 2595 | break; |
2025a643 | 2596 | case ptr_arg: |
c2792f5a DE |
2597 | printf_pointer (stream, current_substring, val_args[i]); |
2598 | break; | |
d3ce09f5 SS |
2599 | case literal_piece: |
2600 | /* Print a portion of the format string that has no | |
2601 | directives. Note that this will not include any | |
2602 | ordinary %-specs, but it might include "%%". That is | |
2603 | why we use printf_filtered and not puts_filtered here. | |
2604 | Also, we pass a dummy argument because some platforms | |
2605 | have modified GCC to include -Wformat-security by | |
2606 | default, which will warn here if there is no | |
2607 | argument. */ | |
af39b1c2 SM |
2608 | DIAGNOSTIC_PUSH |
2609 | DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL | |
d3ce09f5 | 2610 | fprintf_filtered (stream, current_substring, 0); |
af39b1c2 | 2611 | DIAGNOSTIC_POP |
d3ce09f5 | 2612 | break; |
675dcf4f MK |
2613 | default: |
2614 | internal_error (__FILE__, __LINE__, | |
2025a643 | 2615 | _("failed internal consistency check")); |
c906108c | 2616 | } |
d3ce09f5 | 2617 | /* Maybe advance to the next argument. */ |
8e481c3b | 2618 | if (piece.argclass != literal_piece) |
d3ce09f5 | 2619 | ++i; |
c906108c | 2620 | } |
c906108c | 2621 | } |
c906108c | 2622 | } |
c906108c | 2623 | |
f1421989 HZ |
2624 | /* Implement the "printf" command. */ |
2625 | ||
a04b0428 | 2626 | static void |
0b39b52e | 2627 | printf_command (const char *arg, int from_tty) |
f1421989 | 2628 | { |
a04b0428 | 2629 | ui_printf (arg, gdb_stdout); |
ef1dfa36 TT |
2630 | reset_terminal_style (gdb_stdout); |
2631 | wrap_here (""); | |
50b34a18 | 2632 | gdb_flush (gdb_stdout); |
f1421989 HZ |
2633 | } |
2634 | ||
2635 | /* Implement the "eval" command. */ | |
2636 | ||
2637 | static void | |
0b39b52e | 2638 | eval_command (const char *arg, int from_tty) |
f1421989 | 2639 | { |
d7e74731 | 2640 | string_file stb; |
f1421989 | 2641 | |
d7e74731 | 2642 | ui_printf (arg, &stb); |
f1421989 | 2643 | |
d7e74731 | 2644 | std::string expanded = insert_user_defined_cmd_args (stb.c_str ()); |
01770bbd | 2645 | |
95a6b0a1 | 2646 | execute_command (expanded.c_str (), from_tty); |
f1421989 HZ |
2647 | } |
2648 | ||
c906108c | 2649 | void |
fba45db2 | 2650 | _initialize_printcmd (void) |
c906108c | 2651 | { |
c94fdfd0 EZ |
2652 | struct cmd_list_element *c; |
2653 | ||
c906108c SS |
2654 | current_display_number = -1; |
2655 | ||
76727919 | 2656 | gdb::observers::free_objfile.attach (clear_dangling_display_expressions); |
a3247a22 | 2657 | |
11db9430 | 2658 | add_info ("address", info_address_command, |
1bedd215 | 2659 | _("Describe where symbol SYM is stored.")); |
c906108c | 2660 | |
11db9430 | 2661 | add_info ("symbol", info_symbol_command, _("\ |
1bedd215 AC |
2662 | Describe what symbol is at location ADDR.\n\ |
2663 | Only for symbols with fixed locations (global or static scope).")); | |
c906108c | 2664 | |
1bedd215 AC |
2665 | add_com ("x", class_vars, x_command, _("\ |
2666 | Examine memory: x/FMT ADDRESS.\n\ | |
c906108c SS |
2667 | ADDRESS is an expression for the memory address to examine.\n\ |
2668 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2669 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
6fbe845e AB |
2670 | t(binary), f(float), a(address), i(instruction), c(char), s(string)\n\ |
2671 | and z(hex, zero padded on the left).\n\ | |
1bedd215 | 2672 | Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ |
c906108c | 2673 | The specified number of objects of the specified size are printed\n\ |
bb556f1f TK |
2674 | according to the format. If a negative number is specified, memory is\n\ |
2675 | examined backward from the address.\n\n\ | |
c906108c SS |
2676 | Defaults for format and size letters are those previously used.\n\ |
2677 | Default count is 1. Default address is following last thing printed\n\ | |
1bedd215 | 2678 | with this command or \"print\".")); |
c906108c | 2679 | |
c906108c SS |
2680 | #if 0 |
2681 | add_com ("whereis", class_vars, whereis_command, | |
1bedd215 | 2682 | _("Print line number and file of definition of variable.")); |
c906108c | 2683 | #endif |
c5aa993b | 2684 | |
11db9430 | 2685 | add_info ("display", info_display_command, _("\ |
1bedd215 | 2686 | Expressions to display when program stops, with code numbers.")); |
c906108c | 2687 | |
1a966eab AC |
2688 | add_cmd ("undisplay", class_vars, undisplay_command, _("\ |
2689 | Cancel some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2690 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2691 | No argument means cancel all automatic-display expressions.\n\ | |
2692 | \"delete display\" has the same effect as this command.\n\ | |
1a966eab | 2693 | Do \"info display\" to see current list of code numbers."), |
c5aa993b | 2694 | &cmdlist); |
c906108c | 2695 | |
1bedd215 AC |
2696 | add_com ("display", class_vars, display_command, _("\ |
2697 | Print value of expression EXP each time the program stops.\n\ | |
c906108c SS |
2698 | /FMT may be used before EXP as in the \"print\" command.\n\ |
2699 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2700 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2701 | and examining is done as in the \"x\" command.\n\n\ | |
2702 | With no argument, display all currently requested auto-display expressions.\n\ | |
1bedd215 | 2703 | Use \"undisplay\" to cancel display requests previously made.")); |
c906108c | 2704 | |
c9174737 | 2705 | add_cmd ("display", class_vars, enable_display_command, _("\ |
1a966eab | 2706 | Enable some expressions to be displayed when program stops.\n\ |
c906108c SS |
2707 | Arguments are the code numbers of the expressions to resume displaying.\n\ |
2708 | No argument means enable all automatic-display expressions.\n\ | |
1a966eab | 2709 | Do \"info display\" to see current list of code numbers."), &enablelist); |
c906108c | 2710 | |
1a966eab AC |
2711 | add_cmd ("display", class_vars, disable_display_command, _("\ |
2712 | Disable some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2713 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2714 | No argument means disable all automatic-display expressions.\n\ | |
1a966eab | 2715 | Do \"info display\" to see current list of code numbers."), &disablelist); |
c906108c | 2716 | |
1a966eab AC |
2717 | add_cmd ("display", class_vars, undisplay_command, _("\ |
2718 | Cancel some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2719 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2720 | No argument means cancel all automatic-display expressions.\n\ | |
1a966eab | 2721 | Do \"info display\" to see current list of code numbers."), &deletelist); |
c906108c | 2722 | |
1bedd215 | 2723 | add_com ("printf", class_vars, printf_command, _("\ |
80ae639d TT |
2724 | Formatted printing, like the C \"printf\" function.\n\ |
2725 | Usage: printf \"format string\", arg1, arg2, arg3, ..., argn\n\ | |
2726 | This supports most C printf format specifications, like %s, %d, etc.")); | |
c906108c | 2727 | |
1bedd215 AC |
2728 | add_com ("output", class_vars, output_command, _("\ |
2729 | Like \"print\" but don't put in value history and don't print newline.\n\ | |
2730 | This is useful in user-defined commands.")); | |
c906108c | 2731 | |
1bedd215 AC |
2732 | add_prefix_cmd ("set", class_vars, set_command, _("\ |
2733 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2734 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2735 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2736 | with $), a register (a few standard names starting with $), or an actual\n\ | |
1bedd215 AC |
2737 | variable in the program being debugged. EXP is any valid expression.\n\ |
2738 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
2739 | \n\ | |
2740 | With a subcommand, this command modifies parts of the gdb environment.\n\ | |
2741 | You can see these environment settings with the \"show\" command."), | |
c5aa993b | 2742 | &setlist, "set ", 1, &cmdlist); |
c906108c | 2743 | if (dbx_commands) |
0b39b52e | 2744 | add_com ("assign", class_vars, set_command, _("\ |
1bedd215 | 2745 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ |
c906108c SS |
2746 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2747 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2748 | with $), a register (a few standard names starting with $), or an actual\n\ | |
1bedd215 AC |
2749 | variable in the program being debugged. EXP is any valid expression.\n\ |
2750 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
c906108c | 2751 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
1bedd215 | 2752 | You can see these environment settings with the \"show\" command.")); |
c906108c | 2753 | |
0df8b418 | 2754 | /* "call" is the same as "set", but handy for dbx users to call fns. */ |
1bedd215 AC |
2755 | c = add_com ("call", class_vars, call_command, _("\ |
2756 | Call a function in the program.\n\ | |
c906108c SS |
2757 | The argument is the function name and arguments, in the notation of the\n\ |
2758 | current working language. The result is printed and saved in the value\n\ | |
1bedd215 | 2759 | history, if it is not void.")); |
65d12d83 | 2760 | set_cmd_completer (c, expression_completer); |
c906108c | 2761 | |
1a966eab AC |
2762 | add_cmd ("variable", class_vars, set_command, _("\ |
2763 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2764 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2765 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2766 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2767 | variable in the program being debugged. EXP is any valid expression.\n\ | |
1a966eab | 2768 | This may usually be abbreviated to simply \"set\"."), |
c5aa993b | 2769 | &setlist); |
3fcded8f | 2770 | add_alias_cmd ("var", "variable", class_vars, 0, &setlist); |
c906108c | 2771 | |
1bedd215 AC |
2772 | c = add_com ("print", class_vars, print_command, _("\ |
2773 | Print value of expression EXP.\n\ | |
c906108c SS |
2774 | Variables accessible are those of the lexical environment of the selected\n\ |
2775 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2776 | \n\ | |
2777 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2778 | $$NUM refers to NUM'th value back from the last one.\n\ | |
1bedd215 AC |
2779 | Names starting with $ refer to registers (with the values they would have\n\ |
2780 | if the program were to return to the stack frame now selected, restoring\n\ | |
c906108c SS |
2781 | all registers saved by frames farther in) or else to debugger\n\ |
2782 | \"convenience\" variables (any such name not a known register).\n\ | |
1bedd215 AC |
2783 | Use assignment expressions to give values to convenience variables.\n\ |
2784 | \n\ | |
c906108c SS |
2785 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ |
2786 | @ is a binary operator for treating consecutive data objects\n\ | |
2787 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2788 | element is FOO, whose second element is stored in the space following\n\ | |
2789 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
1bedd215 AC |
2790 | resides in memory.\n\ |
2791 | \n\ | |
c906108c | 2792 | EXP may be preceded with /FMT, where FMT is a format letter\n\ |
1bedd215 | 2793 | but no count or size letter (see \"x\" command).")); |
65d12d83 | 2794 | set_cmd_completer (c, expression_completer); |
c906108c | 2795 | add_com_alias ("p", "print", class_vars, 1); |
e93a8774 | 2796 | add_com_alias ("inspect", "print", class_vars, 1); |
c906108c | 2797 | |
35096d9d AC |
2798 | add_setshow_uinteger_cmd ("max-symbolic-offset", no_class, |
2799 | &max_symbolic_offset, _("\ | |
2800 | Set the largest offset that will be printed in <symbol+1234> form."), _("\ | |
f81d1120 PA |
2801 | Show the largest offset that will be printed in <symbol+1234> form."), _("\ |
2802 | Tell GDB to only display the symbolic form of an address if the\n\ | |
2803 | offset between the closest earlier symbol and the address is less than\n\ | |
2804 | the specified maximum offset. The default is \"unlimited\", which tells GDB\n\ | |
2805 | to always print the symbolic form of an address if any symbol precedes\n\ | |
2806 | it. Zero is equivalent to \"unlimited\"."), | |
35096d9d | 2807 | NULL, |
920d2a44 | 2808 | show_max_symbolic_offset, |
35096d9d | 2809 | &setprintlist, &showprintlist); |
5bf193a2 AC |
2810 | add_setshow_boolean_cmd ("symbol-filename", no_class, |
2811 | &print_symbol_filename, _("\ | |
2812 | Set printing of source filename and line number with <symbol>."), _("\ | |
2813 | Show printing of source filename and line number with <symbol>."), NULL, | |
2814 | NULL, | |
920d2a44 | 2815 | show_print_symbol_filename, |
5bf193a2 | 2816 | &setprintlist, &showprintlist); |
f1421989 HZ |
2817 | |
2818 | add_com ("eval", no_class, eval_command, _("\ | |
2819 | Convert \"printf format string\", arg1, arg2, arg3, ..., argn to\n\ | |
2820 | a command line, and call it.")); | |
c906108c | 2821 | } |