Commit | Line | Data |
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c906108c | 1 | /* Print values for GNU debugger GDB. |
e2ad119d | 2 | |
e2882c85 | 3 | Copyright (C) 1986-2018 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
c906108c SS |
21 | #include "frame.h" |
22 | #include "symtab.h" | |
23 | #include "gdbtypes.h" | |
24 | #include "value.h" | |
25 | #include "language.h" | |
26 | #include "expression.h" | |
27 | #include "gdbcore.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "target.h" | |
30 | #include "breakpoint.h" | |
31 | #include "demangle.h" | |
50f182aa | 32 | #include "gdb-demangle.h" |
c906108c SS |
33 | #include "valprint.h" |
34 | #include "annotate.h" | |
c5aa993b JM |
35 | #include "symfile.h" /* for overlay functions */ |
36 | #include "objfiles.h" /* ditto */ | |
c94fdfd0 | 37 | #include "completer.h" /* for completion functions */ |
8b93c638 | 38 | #include "ui-out.h" |
fe898f56 | 39 | #include "block.h" |
92bf2b80 | 40 | #include "disasm.h" |
f69fdf9b | 41 | #include "target-float.h" |
76727919 | 42 | #include "observable.h" |
a3247a22 | 43 | #include "solist.h" |
a3247a22 | 44 | #include "parser-defs.h" |
6c7a06a3 | 45 | #include "charset.h" |
704e9165 | 46 | #include "arch-utils.h" |
e9cafbcc | 47 | #include "cli/cli-utils.h" |
01770bbd | 48 | #include "cli/cli-script.h" |
d3ce09f5 | 49 | #include "format.h" |
05cba821 | 50 | #include "source.h" |
d5722aa2 | 51 | #include "common/byte-vector.h" |
c906108c | 52 | |
6a83354a | 53 | #ifdef TUI |
0df8b418 | 54 | #include "tui/tui.h" /* For tui_active et al. */ |
6a83354a AC |
55 | #endif |
56 | ||
c906108c SS |
57 | /* Last specified output format. */ |
58 | ||
a6bac58e | 59 | static char last_format = 0; |
c906108c SS |
60 | |
61 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
62 | ||
63 | static char last_size = 'w'; | |
64 | ||
9be2ae8f TT |
65 | /* Last specified count for the 'x' command. */ |
66 | ||
67 | static int last_count; | |
68 | ||
5d3729b5 | 69 | /* Default address to examine next, and associated architecture. */ |
c906108c | 70 | |
5d3729b5 | 71 | static struct gdbarch *next_gdbarch; |
c906108c SS |
72 | static CORE_ADDR next_address; |
73 | ||
a4642986 MR |
74 | /* Number of delay instructions following current disassembled insn. */ |
75 | ||
76 | static int branch_delay_insns; | |
77 | ||
c906108c SS |
78 | /* Last address examined. */ |
79 | ||
80 | static CORE_ADDR last_examine_address; | |
81 | ||
82 | /* Contents of last address examined. | |
83 | This is not valid past the end of the `x' command! */ | |
84 | ||
9b558729 | 85 | static value_ref_ptr last_examine_value; |
c906108c SS |
86 | |
87 | /* Largest offset between a symbolic value and an address, that will be | |
88 | printed as `0x1234 <symbol+offset>'. */ | |
89 | ||
90 | static unsigned int max_symbolic_offset = UINT_MAX; | |
920d2a44 AC |
91 | static void |
92 | show_max_symbolic_offset (struct ui_file *file, int from_tty, | |
93 | struct cmd_list_element *c, const char *value) | |
94 | { | |
3e43a32a MS |
95 | fprintf_filtered (file, |
96 | _("The largest offset that will be " | |
97 | "printed in <symbol+1234> form is %s.\n"), | |
920d2a44 AC |
98 | value); |
99 | } | |
c906108c SS |
100 | |
101 | /* Append the source filename and linenumber of the symbol when | |
102 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
103 | static int print_symbol_filename = 0; | |
920d2a44 AC |
104 | static void |
105 | show_print_symbol_filename (struct ui_file *file, int from_tty, | |
106 | struct cmd_list_element *c, const char *value) | |
107 | { | |
3e43a32a MS |
108 | fprintf_filtered (file, _("Printing of source filename and " |
109 | "line number with <symbol> is %s.\n"), | |
920d2a44 AC |
110 | value); |
111 | } | |
c906108c SS |
112 | |
113 | /* Number of auto-display expression currently being displayed. | |
9d8fa392 | 114 | So that we can disable it if we get a signal within it. |
c906108c SS |
115 | -1 when not doing one. */ |
116 | ||
5a18e302 | 117 | static int current_display_number; |
c906108c | 118 | |
c906108c | 119 | struct display |
c5aa993b JM |
120 | { |
121 | /* Chain link to next auto-display item. */ | |
122 | struct display *next; | |
6c95b8df | 123 | |
fa8a61dc TT |
124 | /* The expression as the user typed it. */ |
125 | char *exp_string; | |
6c95b8df | 126 | |
c5aa993b | 127 | /* Expression to be evaluated and displayed. */ |
4d01a485 | 128 | expression_up exp; |
6c95b8df | 129 | |
c5aa993b JM |
130 | /* Item number of this auto-display item. */ |
131 | int number; | |
6c95b8df | 132 | |
c5aa993b JM |
133 | /* Display format specified. */ |
134 | struct format_data format; | |
6c95b8df PA |
135 | |
136 | /* Program space associated with `block'. */ | |
137 | struct program_space *pspace; | |
138 | ||
0df8b418 | 139 | /* Innermost block required by this expression when evaluated. */ |
270140bd | 140 | const struct block *block; |
6c95b8df | 141 | |
0df8b418 | 142 | /* Status of this display (enabled or disabled). */ |
b5de0fa7 | 143 | int enabled_p; |
c5aa993b | 144 | }; |
c906108c SS |
145 | |
146 | /* Chain of expressions whose values should be displayed | |
147 | automatically each time the program stops. */ | |
148 | ||
149 | static struct display *display_chain; | |
150 | ||
151 | static int display_number; | |
152 | ||
c9174737 PA |
153 | /* Walk the following statement or block through all displays. |
154 | ALL_DISPLAYS_SAFE does so even if the statement deletes the current | |
155 | display. */ | |
3c3fe74c PA |
156 | |
157 | #define ALL_DISPLAYS(B) \ | |
158 | for (B = display_chain; B; B = B->next) | |
159 | ||
c9174737 PA |
160 | #define ALL_DISPLAYS_SAFE(B,TMP) \ |
161 | for (B = display_chain; \ | |
162 | B ? (TMP = B->next, 1): 0; \ | |
163 | B = TMP) | |
164 | ||
0df8b418 | 165 | /* Prototypes for local functions. */ |
c906108c | 166 | |
a14ed312 | 167 | static void do_one_display (struct display *); |
c906108c | 168 | \f |
c5aa993b | 169 | |
c906108c SS |
170 | /* Decode a format specification. *STRING_PTR should point to it. |
171 | OFORMAT and OSIZE are used as defaults for the format and size | |
172 | if none are given in the format specification. | |
173 | If OSIZE is zero, then the size field of the returned value | |
174 | should be set only if a size is explicitly specified by the | |
175 | user. | |
176 | The structure returned describes all the data | |
177 | found in the specification. In addition, *STRING_PTR is advanced | |
178 | past the specification and past all whitespace following it. */ | |
179 | ||
180 | static struct format_data | |
6f937416 | 181 | decode_format (const char **string_ptr, int oformat, int osize) |
c906108c SS |
182 | { |
183 | struct format_data val; | |
6f937416 | 184 | const char *p = *string_ptr; |
c906108c SS |
185 | |
186 | val.format = '?'; | |
187 | val.size = '?'; | |
188 | val.count = 1; | |
a6bac58e | 189 | val.raw = 0; |
c906108c | 190 | |
bb556f1f TK |
191 | if (*p == '-') |
192 | { | |
193 | val.count = -1; | |
194 | p++; | |
195 | } | |
c906108c | 196 | if (*p >= '0' && *p <= '9') |
bb556f1f | 197 | val.count *= atoi (p); |
c5aa993b JM |
198 | while (*p >= '0' && *p <= '9') |
199 | p++; | |
c906108c SS |
200 | |
201 | /* Now process size or format letters that follow. */ | |
202 | ||
203 | while (1) | |
204 | { | |
205 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
206 | val.size = *p++; | |
a6bac58e TT |
207 | else if (*p == 'r') |
208 | { | |
209 | val.raw = 1; | |
210 | p++; | |
211 | } | |
c906108c SS |
212 | else if (*p >= 'a' && *p <= 'z') |
213 | val.format = *p++; | |
214 | else | |
215 | break; | |
216 | } | |
217 | ||
c5aa993b JM |
218 | while (*p == ' ' || *p == '\t') |
219 | p++; | |
c906108c SS |
220 | *string_ptr = p; |
221 | ||
222 | /* Set defaults for format and size if not specified. */ | |
223 | if (val.format == '?') | |
224 | { | |
225 | if (val.size == '?') | |
226 | { | |
227 | /* Neither has been specified. */ | |
228 | val.format = oformat; | |
229 | val.size = osize; | |
230 | } | |
231 | else | |
232 | /* If a size is specified, any format makes a reasonable | |
233 | default except 'i'. */ | |
234 | val.format = oformat == 'i' ? 'x' : oformat; | |
235 | } | |
236 | else if (val.size == '?') | |
237 | switch (val.format) | |
238 | { | |
239 | case 'a': | |
5d3729b5 UW |
240 | /* Pick the appropriate size for an address. This is deferred |
241 | until do_examine when we know the actual architecture to use. | |
242 | A special size value of 'a' is used to indicate this case. */ | |
243 | val.size = osize ? 'a' : osize; | |
c906108c SS |
244 | break; |
245 | case 'f': | |
246 | /* Floating point has to be word or giantword. */ | |
247 | if (osize == 'w' || osize == 'g') | |
248 | val.size = osize; | |
249 | else | |
250 | /* Default it to giantword if the last used size is not | |
251 | appropriate. */ | |
252 | val.size = osize ? 'g' : osize; | |
253 | break; | |
254 | case 'c': | |
255 | /* Characters default to one byte. */ | |
256 | val.size = osize ? 'b' : osize; | |
257 | break; | |
9a22f0d0 | 258 | case 's': |
3e43a32a MS |
259 | /* Display strings with byte size chars unless explicitly |
260 | specified. */ | |
9a22f0d0 PM |
261 | val.size = '\0'; |
262 | break; | |
263 | ||
c906108c SS |
264 | default: |
265 | /* The default is the size most recently specified. */ | |
266 | val.size = osize; | |
267 | } | |
268 | ||
269 | return val; | |
270 | } | |
271 | \f | |
79a45b7d | 272 | /* Print value VAL on stream according to OPTIONS. |
c906108c | 273 | Do not end with a newline. |
c906108c | 274 | SIZE is the letter for the size of datum being printed. |
ea37ba09 DJ |
275 | This is used to pad hex numbers so they line up. SIZE is 0 |
276 | for print / output and set for examine. */ | |
c906108c SS |
277 | |
278 | static void | |
79a45b7d TT |
279 | print_formatted (struct value *val, int size, |
280 | const struct value_print_options *options, | |
fba45db2 | 281 | struct ui_file *stream) |
c906108c | 282 | { |
df407dfe | 283 | struct type *type = check_typedef (value_type (val)); |
c906108c SS |
284 | int len = TYPE_LENGTH (type); |
285 | ||
286 | if (VALUE_LVAL (val) == lval_memory) | |
42ae5230 | 287 | next_address = value_address (val) + len; |
c906108c | 288 | |
ea37ba09 | 289 | if (size) |
c906108c | 290 | { |
79a45b7d | 291 | switch (options->format) |
ea37ba09 DJ |
292 | { |
293 | case 's': | |
6c7a06a3 TT |
294 | { |
295 | struct type *elttype = value_type (val); | |
ad3bbd48 | 296 | |
42ae5230 | 297 | next_address = (value_address (val) |
09ca9e2e | 298 | + val_print_string (elttype, NULL, |
42ae5230 | 299 | value_address (val), -1, |
9a22f0d0 | 300 | stream, options) * len); |
6c7a06a3 | 301 | } |
ea37ba09 | 302 | return; |
c906108c | 303 | |
ea37ba09 DJ |
304 | case 'i': |
305 | /* We often wrap here if there are long symbolic names. */ | |
306 | wrap_here (" "); | |
42ae5230 | 307 | next_address = (value_address (val) |
13274fc3 UW |
308 | + gdb_print_insn (get_type_arch (type), |
309 | value_address (val), stream, | |
ea37ba09 DJ |
310 | &branch_delay_insns)); |
311 | return; | |
312 | } | |
c906108c | 313 | } |
ea37ba09 | 314 | |
79a45b7d | 315 | if (options->format == 0 || options->format == 's' |
4e885b20 | 316 | || TYPE_CODE (type) == TYPE_CODE_REF |
ea37ba09 DJ |
317 | || TYPE_CODE (type) == TYPE_CODE_ARRAY |
318 | || TYPE_CODE (type) == TYPE_CODE_STRING | |
319 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
320 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
321 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
79a45b7d | 322 | value_print (val, stream, options); |
ea37ba09 | 323 | else |
b021a221 MS |
324 | /* User specified format, so don't look to the type to tell us |
325 | what to do. */ | |
ab2188aa | 326 | val_print_scalar_formatted (type, |
ab2188aa PA |
327 | value_embedded_offset (val), |
328 | val, | |
329 | options, size, stream); | |
c906108c SS |
330 | } |
331 | ||
b806fb9a UW |
332 | /* Return builtin floating point type of same length as TYPE. |
333 | If no such type is found, return TYPE itself. */ | |
334 | static struct type * | |
50810684 | 335 | float_type_from_length (struct type *type) |
b806fb9a | 336 | { |
50810684 | 337 | struct gdbarch *gdbarch = get_type_arch (type); |
b806fb9a | 338 | const struct builtin_type *builtin = builtin_type (gdbarch); |
b806fb9a | 339 | |
744a8059 | 340 | if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_float)) |
b806fb9a | 341 | type = builtin->builtin_float; |
744a8059 | 342 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_double)) |
b806fb9a | 343 | type = builtin->builtin_double; |
744a8059 | 344 | else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_long_double)) |
b806fb9a UW |
345 | type = builtin->builtin_long_double; |
346 | ||
347 | return type; | |
348 | } | |
349 | ||
c906108c | 350 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, |
ab2188aa PA |
351 | according to OPTIONS and SIZE on STREAM. Formats s and i are not |
352 | supported at this level. */ | |
c906108c SS |
353 | |
354 | void | |
7c543f7b | 355 | print_scalar_formatted (const gdb_byte *valaddr, struct type *type, |
79a45b7d TT |
356 | const struct value_print_options *options, |
357 | int size, struct ui_file *stream) | |
c906108c | 358 | { |
50810684 | 359 | struct gdbarch *gdbarch = get_type_arch (type); |
c906108c | 360 | unsigned int len = TYPE_LENGTH (type); |
69feb676 | 361 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 362 | |
ab2188aa PA |
363 | /* String printing should go through val_print_scalar_formatted. */ |
364 | gdb_assert (options->format != 's'); | |
ea37ba09 | 365 | |
ef166cf4 | 366 | /* If the value is a pointer, and pointers and addresses are not the |
d0aee0c4 | 367 | same, then at this point, the value's length (in target bytes) is |
17a912b6 | 368 | gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */ |
ef166cf4 | 369 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
69feb676 | 370 | len = gdbarch_addr_bit (gdbarch) / TARGET_CHAR_BIT; |
ef166cf4 | 371 | |
c906108c SS |
372 | /* If we are printing it as unsigned, truncate it in case it is actually |
373 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
374 | (if shorts are 16 bits) instead of 4294967295). */ | |
d9109c80 TT |
375 | if (options->format != 'c' |
376 | && (options->format != 'd' || TYPE_UNSIGNED (type))) | |
c906108c | 377 | { |
d9109c80 TT |
378 | if (len < TYPE_LENGTH (type) && byte_order == BFD_ENDIAN_BIG) |
379 | valaddr += TYPE_LENGTH (type) - len; | |
c906108c SS |
380 | } |
381 | ||
d9109c80 | 382 | if (size != 0 && (options->format == 'x' || options->format == 't')) |
c906108c | 383 | { |
d9109c80 TT |
384 | /* Truncate to fit. */ |
385 | unsigned newlen; | |
386 | switch (size) | |
c906108c | 387 | { |
d9109c80 TT |
388 | case 'b': |
389 | newlen = 1; | |
390 | break; | |
391 | case 'h': | |
392 | newlen = 2; | |
393 | break; | |
394 | case 'w': | |
395 | newlen = 4; | |
396 | break; | |
397 | case 'g': | |
398 | newlen = 8; | |
399 | break; | |
400 | default: | |
401 | error (_("Undefined output size \"%c\"."), size); | |
c906108c | 402 | } |
d9109c80 TT |
403 | if (newlen < len && byte_order == BFD_ENDIAN_BIG) |
404 | valaddr += len - newlen; | |
405 | len = newlen; | |
406 | } | |
c906108c | 407 | |
d9109c80 TT |
408 | /* Historically gdb has printed floats by first casting them to a |
409 | long, and then printing the long. PR cli/16242 suggests changing | |
410 | this to using C-style hex float format. */ | |
d5722aa2 | 411 | gdb::byte_vector converted_float_bytes; |
d9109c80 TT |
412 | if (TYPE_CODE (type) == TYPE_CODE_FLT |
413 | && (options->format == 'o' | |
414 | || options->format == 'x' | |
415 | || options->format == 't' | |
d6382fff TT |
416 | || options->format == 'z' |
417 | || options->format == 'd' | |
418 | || options->format == 'u')) | |
d9109c80 TT |
419 | { |
420 | LONGEST val_long = unpack_long (type, valaddr); | |
421 | converted_float_bytes.resize (TYPE_LENGTH (type)); | |
422 | store_signed_integer (converted_float_bytes.data (), TYPE_LENGTH (type), | |
423 | byte_order, val_long); | |
424 | valaddr = converted_float_bytes.data (); | |
425 | } | |
c906108c | 426 | |
fdf0cbc2 UW |
427 | /* Printing a non-float type as 'f' will interpret the data as if it were |
428 | of a floating-point type of the same length, if that exists. Otherwise, | |
429 | the data is printed as integer. */ | |
430 | char format = options->format; | |
431 | if (format == 'f' && TYPE_CODE (type) != TYPE_CODE_FLT) | |
432 | { | |
433 | type = float_type_from_length (type); | |
434 | if (TYPE_CODE (type) != TYPE_CODE_FLT) | |
435 | format = 0; | |
436 | } | |
437 | ||
438 | switch (format) | |
d9109c80 TT |
439 | { |
440 | case 'o': | |
441 | print_octal_chars (stream, valaddr, len, byte_order); | |
442 | break; | |
d6382fff TT |
443 | case 'd': |
444 | print_decimal_chars (stream, valaddr, len, true, byte_order); | |
445 | break; | |
c906108c | 446 | case 'u': |
d9109c80 | 447 | print_decimal_chars (stream, valaddr, len, false, byte_order); |
c906108c | 448 | break; |
d9109c80 | 449 | case 0: |
d9109c80 TT |
450 | if (TYPE_CODE (type) != TYPE_CODE_FLT) |
451 | { | |
452 | print_decimal_chars (stream, valaddr, len, !TYPE_UNSIGNED (type), | |
453 | byte_order); | |
454 | break; | |
455 | } | |
456 | /* FALLTHROUGH */ | |
457 | case 'f': | |
d9109c80 | 458 | print_floating (valaddr, type, stream); |
c906108c SS |
459 | break; |
460 | ||
d9109c80 TT |
461 | case 't': |
462 | print_binary_chars (stream, valaddr, len, byte_order, size > 0); | |
463 | break; | |
464 | case 'x': | |
465 | print_hex_chars (stream, valaddr, len, byte_order, size > 0); | |
466 | break; | |
467 | case 'z': | |
468 | print_hex_chars (stream, valaddr, len, byte_order, true); | |
c906108c | 469 | break; |
c906108c | 470 | case 'c': |
79a45b7d TT |
471 | { |
472 | struct value_print_options opts = *options; | |
69feb676 | 473 | |
d9109c80 TT |
474 | LONGEST val_long = unpack_long (type, valaddr); |
475 | ||
ad3bbd48 | 476 | opts.format = 0; |
79a45b7d | 477 | if (TYPE_UNSIGNED (type)) |
69feb676 UW |
478 | type = builtin_type (gdbarch)->builtin_true_unsigned_char; |
479 | else | |
480 | type = builtin_type (gdbarch)->builtin_true_char; | |
481 | ||
482 | value_print (value_from_longest (type, val_long), stream, &opts); | |
79a45b7d | 483 | } |
c906108c SS |
484 | break; |
485 | ||
d9109c80 | 486 | case 'a': |
c906108c | 487 | { |
d9109c80 | 488 | CORE_ADDR addr = unpack_pointer (type, valaddr); |
c906108c | 489 | |
d9109c80 | 490 | print_address (gdbarch, addr, stream); |
c906108c SS |
491 | } |
492 | break; | |
493 | ||
494 | default: | |
fdf0cbc2 | 495 | error (_("Undefined output format \"%c\"."), format); |
c906108c SS |
496 | } |
497 | } | |
498 | ||
499 | /* Specify default address for `x' command. | |
675dcf4f | 500 | The `info lines' command uses this. */ |
c906108c SS |
501 | |
502 | void | |
8b9b9e1a | 503 | set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 504 | { |
8b9b9e1a UW |
505 | struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
506 | ||
5d3729b5 | 507 | next_gdbarch = gdbarch; |
c906108c SS |
508 | next_address = addr; |
509 | ||
510 | /* Make address available to the user as $_. */ | |
511 | set_internalvar (lookup_internalvar ("_"), | |
8b9b9e1a | 512 | value_from_pointer (ptr_type, addr)); |
c906108c SS |
513 | } |
514 | ||
515 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
516 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
517 | Optionally also print source file and line number, if available. | |
518 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
519 | or to interpret it as a possible C++ name and convert it back to source | |
520 | form. However note that DO_DEMANGLE can be overridden by the specific | |
9cb709b6 TT |
521 | settings of the demangle and asm_demangle variables. Returns |
522 | non-zero if anything was printed; zero otherwise. */ | |
c906108c | 523 | |
9cb709b6 | 524 | int |
22e722e1 DJ |
525 | print_address_symbolic (struct gdbarch *gdbarch, CORE_ADDR addr, |
526 | struct ui_file *stream, | |
a121b7c1 | 527 | int do_demangle, const char *leadin) |
dfcd3bfb JM |
528 | { |
529 | char *name = NULL; | |
530 | char *filename = NULL; | |
531 | int unmapped = 0; | |
532 | int offset = 0; | |
533 | int line = 0; | |
534 | ||
675dcf4f | 535 | /* Throw away both name and filename. */ |
2f9429ae AC |
536 | struct cleanup *cleanup_chain = make_cleanup (free_current_contents, &name); |
537 | make_cleanup (free_current_contents, &filename); | |
dfcd3bfb | 538 | |
22e722e1 | 539 | if (build_address_symbolic (gdbarch, addr, do_demangle, &name, &offset, |
675dcf4f | 540 | &filename, &line, &unmapped)) |
2f9429ae AC |
541 | { |
542 | do_cleanups (cleanup_chain); | |
9cb709b6 | 543 | return 0; |
2f9429ae | 544 | } |
dfcd3bfb JM |
545 | |
546 | fputs_filtered (leadin, stream); | |
547 | if (unmapped) | |
548 | fputs_filtered ("<*", stream); | |
549 | else | |
550 | fputs_filtered ("<", stream); | |
551 | fputs_filtered (name, stream); | |
552 | if (offset != 0) | |
553 | fprintf_filtered (stream, "+%u", (unsigned int) offset); | |
554 | ||
555 | /* Append source filename and line number if desired. Give specific | |
556 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
557 | if (print_symbol_filename && filename != NULL) | |
558 | { | |
559 | if (line != -1) | |
560 | fprintf_filtered (stream, " at %s:%d", filename, line); | |
561 | else | |
562 | fprintf_filtered (stream, " in %s", filename); | |
563 | } | |
564 | if (unmapped) | |
565 | fputs_filtered ("*>", stream); | |
566 | else | |
567 | fputs_filtered (">", stream); | |
568 | ||
569 | do_cleanups (cleanup_chain); | |
9cb709b6 | 570 | return 1; |
dfcd3bfb JM |
571 | } |
572 | ||
573 | /* Given an address ADDR return all the elements needed to print the | |
0df8b418 | 574 | address in a symbolic form. NAME can be mangled or not depending |
dfcd3bfb | 575 | on DO_DEMANGLE (and also on the asm_demangle global variable, |
0df8b418 MS |
576 | manipulated via ''set print asm-demangle''). Return 0 in case of |
577 | success, when all the info in the OUT paramters is valid. Return 1 | |
578 | otherwise. */ | |
dfcd3bfb | 579 | int |
22e722e1 DJ |
580 | build_address_symbolic (struct gdbarch *gdbarch, |
581 | CORE_ADDR addr, /* IN */ | |
dfcd3bfb JM |
582 | int do_demangle, /* IN */ |
583 | char **name, /* OUT */ | |
584 | int *offset, /* OUT */ | |
585 | char **filename, /* OUT */ | |
586 | int *line, /* OUT */ | |
587 | int *unmapped) /* OUT */ | |
c906108c | 588 | { |
77e371c0 | 589 | struct bound_minimal_symbol msymbol; |
c906108c | 590 | struct symbol *symbol; |
c906108c | 591 | CORE_ADDR name_location = 0; |
714835d5 | 592 | struct obj_section *section = NULL; |
0d5cff50 | 593 | const char *name_temp = ""; |
dfcd3bfb | 594 | |
89c83b10 | 595 | /* Let's say it is mapped (not unmapped). */ |
dfcd3bfb | 596 | *unmapped = 0; |
c906108c | 597 | |
dfcd3bfb | 598 | /* Determine if the address is in an overlay, and whether it is |
675dcf4f | 599 | mapped. */ |
c906108c SS |
600 | if (overlay_debugging) |
601 | { | |
602 | section = find_pc_overlay (addr); | |
603 | if (pc_in_unmapped_range (addr, section)) | |
604 | { | |
dfcd3bfb | 605 | *unmapped = 1; |
c906108c SS |
606 | addr = overlay_mapped_address (addr, section); |
607 | } | |
608 | } | |
609 | ||
c906108c SS |
610 | /* First try to find the address in the symbol table, then |
611 | in the minsyms. Take the closest one. */ | |
612 | ||
613 | /* This is defective in the sense that it only finds text symbols. So | |
614 | really this is kind of pointless--we should make sure that the | |
615 | minimal symbols have everything we need (by changing that we could | |
616 | save some memory, but for many debug format--ELF/DWARF or | |
617 | anything/stabs--it would be inconvenient to eliminate those minimal | |
618 | symbols anyway). */ | |
77e371c0 | 619 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section); |
c906108c SS |
620 | symbol = find_pc_sect_function (addr, section); |
621 | ||
622 | if (symbol) | |
623 | { | |
22e722e1 DJ |
624 | /* If this is a function (i.e. a code address), strip out any |
625 | non-address bits. For instance, display a pointer to the | |
626 | first instruction of a Thumb function as <function>; the | |
627 | second instruction will be <function+2>, even though the | |
628 | pointer is <function+3>. This matches the ISA behavior. */ | |
629 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
630 | ||
c906108c | 631 | name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol)); |
406fc7fb | 632 | if (do_demangle || asm_demangle) |
de5ad195 | 633 | name_temp = SYMBOL_PRINT_NAME (symbol); |
c906108c | 634 | else |
3567439c | 635 | name_temp = SYMBOL_LINKAGE_NAME (symbol); |
c906108c SS |
636 | } |
637 | ||
77e371c0 TT |
638 | if (msymbol.minsym != NULL |
639 | && MSYMBOL_HAS_SIZE (msymbol.minsym) | |
640 | && MSYMBOL_SIZE (msymbol.minsym) == 0 | |
641 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text | |
642 | && MSYMBOL_TYPE (msymbol.minsym) != mst_text_gnu_ifunc | |
643 | && MSYMBOL_TYPE (msymbol.minsym) != mst_file_text) | |
644 | msymbol.minsym = NULL; | |
9cb709b6 | 645 | |
77e371c0 | 646 | if (msymbol.minsym != NULL) |
c906108c | 647 | { |
77e371c0 | 648 | if (BMSYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL) |
c906108c | 649 | { |
fe8400b4 WN |
650 | /* If this is a function (i.e. a code address), strip out any |
651 | non-address bits. For instance, display a pointer to the | |
652 | first instruction of a Thumb function as <function>; the | |
653 | second instruction will be <function+2>, even though the | |
654 | pointer is <function+3>. This matches the ISA behavior. */ | |
77e371c0 TT |
655 | if (MSYMBOL_TYPE (msymbol.minsym) == mst_text |
656 | || MSYMBOL_TYPE (msymbol.minsym) == mst_text_gnu_ifunc | |
657 | || MSYMBOL_TYPE (msymbol.minsym) == mst_file_text | |
658 | || MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline) | |
fe8400b4 WN |
659 | addr = gdbarch_addr_bits_remove (gdbarch, addr); |
660 | ||
c906108c SS |
661 | /* The msymbol is closer to the address than the symbol; |
662 | use the msymbol instead. */ | |
663 | symbol = 0; | |
77e371c0 | 664 | name_location = BMSYMBOL_VALUE_ADDRESS (msymbol); |
406fc7fb | 665 | if (do_demangle || asm_demangle) |
77e371c0 | 666 | name_temp = MSYMBOL_PRINT_NAME (msymbol.minsym); |
c906108c | 667 | else |
77e371c0 | 668 | name_temp = MSYMBOL_LINKAGE_NAME (msymbol.minsym); |
c906108c SS |
669 | } |
670 | } | |
77e371c0 | 671 | if (symbol == NULL && msymbol.minsym == NULL) |
dfcd3bfb | 672 | return 1; |
c906108c | 673 | |
c906108c SS |
674 | /* If the nearest symbol is too far away, don't print anything symbolic. */ |
675 | ||
676 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
677 | CORE_ADDR. But when we detect unsigned wraparound in the | |
678 | CORE_ADDR math, we ignore this test and print the offset, | |
679 | because addr+max_symbolic_offset has wrapped through the end | |
680 | of the address space back to the beginning, giving bogus comparison. */ | |
681 | if (addr > name_location + max_symbolic_offset | |
682 | && name_location + max_symbolic_offset > name_location) | |
dfcd3bfb | 683 | return 1; |
c906108c | 684 | |
dfcd3bfb JM |
685 | *offset = addr - name_location; |
686 | ||
687 | *name = xstrdup (name_temp); | |
c906108c | 688 | |
c906108c SS |
689 | if (print_symbol_filename) |
690 | { | |
691 | struct symtab_and_line sal; | |
692 | ||
693 | sal = find_pc_sect_line (addr, section, 0); | |
694 | ||
695 | if (sal.symtab) | |
dfcd3bfb | 696 | { |
05cba821 | 697 | *filename = xstrdup (symtab_to_filename_for_display (sal.symtab)); |
dfcd3bfb JM |
698 | *line = sal.line; |
699 | } | |
c906108c | 700 | } |
dfcd3bfb | 701 | return 0; |
c906108c SS |
702 | } |
703 | ||
c906108c SS |
704 | |
705 | /* Print address ADDR symbolically on STREAM. | |
706 | First print it as a number. Then perhaps print | |
707 | <SYMBOL + OFFSET> after the number. */ | |
708 | ||
709 | void | |
5af949e3 UW |
710 | print_address (struct gdbarch *gdbarch, |
711 | CORE_ADDR addr, struct ui_file *stream) | |
c906108c | 712 | { |
5af949e3 | 713 | fputs_filtered (paddress (gdbarch, addr), stream); |
22e722e1 | 714 | print_address_symbolic (gdbarch, addr, stream, asm_demangle, " "); |
c906108c SS |
715 | } |
716 | ||
2b28d209 PP |
717 | /* Return a prefix for instruction address: |
718 | "=> " for current instruction, else " ". */ | |
719 | ||
720 | const char * | |
721 | pc_prefix (CORE_ADDR addr) | |
722 | { | |
723 | if (has_stack_frames ()) | |
724 | { | |
725 | struct frame_info *frame; | |
726 | CORE_ADDR pc; | |
727 | ||
728 | frame = get_selected_frame (NULL); | |
ce406537 | 729 | if (get_frame_pc_if_available (frame, &pc) && pc == addr) |
2b28d209 PP |
730 | return "=> "; |
731 | } | |
732 | return " "; | |
733 | } | |
734 | ||
c906108c SS |
735 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE |
736 | controls whether to print the symbolic name "raw" or demangled. | |
9cb709b6 | 737 | Return non-zero if anything was printed; zero otherwise. */ |
c906108c | 738 | |
9cb709b6 | 739 | int |
edf0c1b7 TT |
740 | print_address_demangle (const struct value_print_options *opts, |
741 | struct gdbarch *gdbarch, CORE_ADDR addr, | |
5af949e3 | 742 | struct ui_file *stream, int do_demangle) |
c906108c | 743 | { |
1d51a733 | 744 | if (opts->addressprint) |
c906108c | 745 | { |
5af949e3 | 746 | fputs_filtered (paddress (gdbarch, addr), stream); |
22e722e1 | 747 | print_address_symbolic (gdbarch, addr, stream, do_demangle, " "); |
c906108c SS |
748 | } |
749 | else | |
750 | { | |
9cb709b6 | 751 | return print_address_symbolic (gdbarch, addr, stream, do_demangle, ""); |
c906108c | 752 | } |
9cb709b6 | 753 | return 1; |
c906108c SS |
754 | } |
755 | \f | |
756 | ||
bb556f1f TK |
757 | /* Find the address of the instruction that is INST_COUNT instructions before |
758 | the instruction at ADDR. | |
759 | Since some architectures have variable-length instructions, we can't just | |
760 | simply subtract INST_COUNT * INSN_LEN from ADDR. Instead, we use line | |
761 | number information to locate the nearest known instruction boundary, | |
762 | and disassemble forward from there. If we go out of the symbol range | |
763 | during disassembling, we return the lowest address we've got so far and | |
764 | set the number of instructions read to INST_READ. */ | |
765 | ||
766 | static CORE_ADDR | |
767 | find_instruction_backward (struct gdbarch *gdbarch, CORE_ADDR addr, | |
768 | int inst_count, int *inst_read) | |
769 | { | |
770 | /* The vector PCS is used to store instruction addresses within | |
771 | a pc range. */ | |
772 | CORE_ADDR loop_start, loop_end, p; | |
52d214d3 | 773 | std::vector<CORE_ADDR> pcs; |
bb556f1f | 774 | struct symtab_and_line sal; |
bb556f1f TK |
775 | |
776 | *inst_read = 0; | |
777 | loop_start = loop_end = addr; | |
778 | ||
779 | /* In each iteration of the outer loop, we get a pc range that ends before | |
780 | LOOP_START, then we count and store every instruction address of the range | |
781 | iterated in the loop. | |
782 | If the number of instructions counted reaches INST_COUNT, return the | |
783 | stored address that is located INST_COUNT instructions back from ADDR. | |
784 | If INST_COUNT is not reached, we subtract the number of counted | |
785 | instructions from INST_COUNT, and go to the next iteration. */ | |
786 | do | |
787 | { | |
52d214d3 | 788 | pcs.clear (); |
bb556f1f TK |
789 | sal = find_pc_sect_line (loop_start, NULL, 1); |
790 | if (sal.line <= 0) | |
791 | { | |
792 | /* We reach here when line info is not available. In this case, | |
793 | we print a message and just exit the loop. The return value | |
794 | is calculated after the loop. */ | |
795 | printf_filtered (_("No line number information available " | |
796 | "for address ")); | |
797 | wrap_here (" "); | |
798 | print_address (gdbarch, loop_start - 1, gdb_stdout); | |
799 | printf_filtered ("\n"); | |
800 | break; | |
801 | } | |
802 | ||
803 | loop_end = loop_start; | |
804 | loop_start = sal.pc; | |
805 | ||
806 | /* This loop pushes instruction addresses in the range from | |
807 | LOOP_START to LOOP_END. */ | |
808 | for (p = loop_start; p < loop_end;) | |
809 | { | |
52d214d3 | 810 | pcs.push_back (p); |
bb556f1f TK |
811 | p += gdb_insn_length (gdbarch, p); |
812 | } | |
813 | ||
52d214d3 TT |
814 | inst_count -= pcs.size (); |
815 | *inst_read += pcs.size (); | |
bb556f1f TK |
816 | } |
817 | while (inst_count > 0); | |
818 | ||
819 | /* After the loop, the vector PCS has instruction addresses of the last | |
820 | source line we processed, and INST_COUNT has a negative value. | |
821 | We return the address at the index of -INST_COUNT in the vector for | |
822 | the reason below. | |
823 | Let's assume the following instruction addresses and run 'x/-4i 0x400e'. | |
824 | Line X of File | |
825 | 0x4000 | |
826 | 0x4001 | |
827 | 0x4005 | |
828 | Line Y of File | |
829 | 0x4009 | |
830 | 0x400c | |
831 | => 0x400e | |
832 | 0x4011 | |
833 | find_instruction_backward is called with INST_COUNT = 4 and expected to | |
834 | return 0x4001. When we reach here, INST_COUNT is set to -1 because | |
835 | it was subtracted by 2 (from Line Y) and 3 (from Line X). The value | |
836 | 4001 is located at the index 1 of the last iterated line (= Line X), | |
837 | which is simply calculated by -INST_COUNT. | |
838 | The case when the length of PCS is 0 means that we reached an area for | |
839 | which line info is not available. In such case, we return LOOP_START, | |
840 | which was the lowest instruction address that had line info. */ | |
52d214d3 | 841 | p = pcs.size () > 0 ? pcs[-inst_count] : loop_start; |
bb556f1f TK |
842 | |
843 | /* INST_READ includes all instruction addresses in a pc range. Need to | |
844 | exclude the beginning part up to the address we're returning. That | |
845 | is, exclude {0x4000} in the example above. */ | |
846 | if (inst_count < 0) | |
847 | *inst_read += inst_count; | |
848 | ||
bb556f1f TK |
849 | return p; |
850 | } | |
851 | ||
852 | /* Backward read LEN bytes of target memory from address MEMADDR + LEN, | |
853 | placing the results in GDB's memory from MYADDR + LEN. Returns | |
854 | a count of the bytes actually read. */ | |
855 | ||
856 | static int | |
857 | read_memory_backward (struct gdbarch *gdbarch, | |
858 | CORE_ADDR memaddr, gdb_byte *myaddr, int len) | |
859 | { | |
860 | int errcode; | |
861 | int nread; /* Number of bytes actually read. */ | |
862 | ||
863 | /* First try a complete read. */ | |
864 | errcode = target_read_memory (memaddr, myaddr, len); | |
865 | if (errcode == 0) | |
866 | { | |
867 | /* Got it all. */ | |
868 | nread = len; | |
869 | } | |
870 | else | |
871 | { | |
872 | /* Loop, reading one byte at a time until we get as much as we can. */ | |
873 | memaddr += len; | |
874 | myaddr += len; | |
875 | for (nread = 0; nread < len; ++nread) | |
876 | { | |
877 | errcode = target_read_memory (--memaddr, --myaddr, 1); | |
878 | if (errcode != 0) | |
879 | { | |
880 | /* The read was unsuccessful, so exit the loop. */ | |
881 | printf_filtered (_("Cannot access memory at address %s\n"), | |
882 | paddress (gdbarch, memaddr)); | |
883 | break; | |
884 | } | |
885 | } | |
886 | } | |
887 | return nread; | |
888 | } | |
889 | ||
890 | /* Returns true if X (which is LEN bytes wide) is the number zero. */ | |
891 | ||
892 | static int | |
893 | integer_is_zero (const gdb_byte *x, int len) | |
894 | { | |
895 | int i = 0; | |
896 | ||
897 | while (i < len && x[i] == 0) | |
898 | ++i; | |
899 | return (i == len); | |
900 | } | |
901 | ||
902 | /* Find the start address of a string in which ADDR is included. | |
903 | Basically we search for '\0' and return the next address, | |
904 | but if OPTIONS->PRINT_MAX is smaller than the length of a string, | |
905 | we stop searching and return the address to print characters as many as | |
906 | PRINT_MAX from the string. */ | |
907 | ||
908 | static CORE_ADDR | |
909 | find_string_backward (struct gdbarch *gdbarch, | |
910 | CORE_ADDR addr, int count, int char_size, | |
911 | const struct value_print_options *options, | |
912 | int *strings_counted) | |
913 | { | |
914 | const int chunk_size = 0x20; | |
bb556f1f TK |
915 | int read_error = 0; |
916 | int chars_read = 0; | |
917 | int chars_to_read = chunk_size; | |
918 | int chars_counted = 0; | |
919 | int count_original = count; | |
920 | CORE_ADDR string_start_addr = addr; | |
921 | ||
922 | gdb_assert (char_size == 1 || char_size == 2 || char_size == 4); | |
26fcd5d7 | 923 | gdb::byte_vector buffer (chars_to_read * char_size); |
bb556f1f TK |
924 | while (count > 0 && read_error == 0) |
925 | { | |
926 | int i; | |
927 | ||
928 | addr -= chars_to_read * char_size; | |
26fcd5d7 | 929 | chars_read = read_memory_backward (gdbarch, addr, buffer.data (), |
bb556f1f TK |
930 | chars_to_read * char_size); |
931 | chars_read /= char_size; | |
932 | read_error = (chars_read == chars_to_read) ? 0 : 1; | |
933 | /* Searching for '\0' from the end of buffer in backward direction. */ | |
934 | for (i = 0; i < chars_read && count > 0 ; ++i, ++chars_counted) | |
935 | { | |
936 | int offset = (chars_to_read - i - 1) * char_size; | |
937 | ||
26fcd5d7 | 938 | if (integer_is_zero (&buffer[offset], char_size) |
bb556f1f TK |
939 | || chars_counted == options->print_max) |
940 | { | |
941 | /* Found '\0' or reached print_max. As OFFSET is the offset to | |
942 | '\0', we add CHAR_SIZE to return the start address of | |
943 | a string. */ | |
944 | --count; | |
945 | string_start_addr = addr + offset + char_size; | |
946 | chars_counted = 0; | |
947 | } | |
948 | } | |
949 | } | |
950 | ||
951 | /* Update STRINGS_COUNTED with the actual number of loaded strings. */ | |
952 | *strings_counted = count_original - count; | |
953 | ||
954 | if (read_error != 0) | |
955 | { | |
956 | /* In error case, STRING_START_ADDR is pointing to the string that | |
957 | was last successfully loaded. Rewind the partially loaded string. */ | |
958 | string_start_addr -= chars_counted * char_size; | |
959 | } | |
960 | ||
bb556f1f TK |
961 | return string_start_addr; |
962 | } | |
963 | ||
c906108c SS |
964 | /* Examine data at address ADDR in format FMT. |
965 | Fetch it from memory and print on gdb_stdout. */ | |
966 | ||
967 | static void | |
5d3729b5 | 968 | do_examine (struct format_data fmt, struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 969 | { |
52f0bd74 AC |
970 | char format = 0; |
971 | char size; | |
972 | int count = 1; | |
c906108c | 973 | struct type *val_type = NULL; |
52f0bd74 AC |
974 | int i; |
975 | int maxelts; | |
79a45b7d | 976 | struct value_print_options opts; |
bb556f1f TK |
977 | int need_to_update_next_address = 0; |
978 | CORE_ADDR addr_rewound = 0; | |
c906108c SS |
979 | |
980 | format = fmt.format; | |
981 | size = fmt.size; | |
982 | count = fmt.count; | |
5d3729b5 | 983 | next_gdbarch = gdbarch; |
c906108c | 984 | next_address = addr; |
c906108c | 985 | |
9a22f0d0 PM |
986 | /* Instruction format implies fetch single bytes |
987 | regardless of the specified size. | |
988 | The case of strings is handled in decode_format, only explicit | |
989 | size operator are not changed to 'b'. */ | |
990 | if (format == 'i') | |
c906108c SS |
991 | size = 'b'; |
992 | ||
5d3729b5 UW |
993 | if (size == 'a') |
994 | { | |
995 | /* Pick the appropriate size for an address. */ | |
996 | if (gdbarch_ptr_bit (next_gdbarch) == 64) | |
997 | size = 'g'; | |
998 | else if (gdbarch_ptr_bit (next_gdbarch) == 32) | |
999 | size = 'w'; | |
1000 | else if (gdbarch_ptr_bit (next_gdbarch) == 16) | |
1001 | size = 'h'; | |
1002 | else | |
1003 | /* Bad value for gdbarch_ptr_bit. */ | |
1004 | internal_error (__FILE__, __LINE__, | |
1005 | _("failed internal consistency check")); | |
1006 | } | |
1007 | ||
1008 | if (size == 'b') | |
df4df182 | 1009 | val_type = builtin_type (next_gdbarch)->builtin_int8; |
c906108c | 1010 | else if (size == 'h') |
df4df182 | 1011 | val_type = builtin_type (next_gdbarch)->builtin_int16; |
c906108c | 1012 | else if (size == 'w') |
df4df182 | 1013 | val_type = builtin_type (next_gdbarch)->builtin_int32; |
c906108c | 1014 | else if (size == 'g') |
df4df182 | 1015 | val_type = builtin_type (next_gdbarch)->builtin_int64; |
c906108c | 1016 | |
9a22f0d0 PM |
1017 | if (format == 's') |
1018 | { | |
1019 | struct type *char_type = NULL; | |
ad3bbd48 | 1020 | |
9a22f0d0 PM |
1021 | /* Search for "char16_t" or "char32_t" types or fall back to 8-bit char |
1022 | if type is not found. */ | |
1023 | if (size == 'h') | |
1024 | char_type = builtin_type (next_gdbarch)->builtin_char16; | |
1025 | else if (size == 'w') | |
1026 | char_type = builtin_type (next_gdbarch)->builtin_char32; | |
1027 | if (char_type) | |
1028 | val_type = char_type; | |
1029 | else | |
1030 | { | |
1031 | if (size != '\0' && size != 'b') | |
0df8b418 MS |
1032 | warning (_("Unable to display strings with " |
1033 | "size '%c', using 'b' instead."), size); | |
9a22f0d0 PM |
1034 | size = 'b'; |
1035 | val_type = builtin_type (next_gdbarch)->builtin_int8; | |
1036 | } | |
1037 | } | |
1038 | ||
c906108c SS |
1039 | maxelts = 8; |
1040 | if (size == 'w') | |
1041 | maxelts = 4; | |
1042 | if (size == 'g') | |
1043 | maxelts = 2; | |
1044 | if (format == 's' || format == 'i') | |
1045 | maxelts = 1; | |
1046 | ||
79a45b7d TT |
1047 | get_formatted_print_options (&opts, format); |
1048 | ||
bb556f1f TK |
1049 | if (count < 0) |
1050 | { | |
1051 | /* This is the negative repeat count case. | |
1052 | We rewind the address based on the given repeat count and format, | |
1053 | then examine memory from there in forward direction. */ | |
1054 | ||
1055 | count = -count; | |
1056 | if (format == 'i') | |
1057 | { | |
1058 | next_address = find_instruction_backward (gdbarch, addr, count, | |
1059 | &count); | |
1060 | } | |
1061 | else if (format == 's') | |
1062 | { | |
1063 | next_address = find_string_backward (gdbarch, addr, count, | |
1064 | TYPE_LENGTH (val_type), | |
1065 | &opts, &count); | |
1066 | } | |
1067 | else | |
1068 | { | |
1069 | next_address = addr - count * TYPE_LENGTH (val_type); | |
1070 | } | |
1071 | ||
1072 | /* The following call to print_formatted updates next_address in every | |
1073 | iteration. In backward case, we store the start address here | |
1074 | and update next_address with it before exiting the function. */ | |
1075 | addr_rewound = (format == 's' | |
1076 | ? next_address - TYPE_LENGTH (val_type) | |
1077 | : next_address); | |
1078 | need_to_update_next_address = 1; | |
1079 | } | |
1080 | ||
c906108c SS |
1081 | /* Print as many objects as specified in COUNT, at most maxelts per line, |
1082 | with the address of the next one at the start of each line. */ | |
1083 | ||
1084 | while (count > 0) | |
1085 | { | |
1086 | QUIT; | |
2b28d209 PP |
1087 | if (format == 'i') |
1088 | fputs_filtered (pc_prefix (next_address), gdb_stdout); | |
5af949e3 | 1089 | print_address (next_gdbarch, next_address, gdb_stdout); |
c906108c SS |
1090 | printf_filtered (":"); |
1091 | for (i = maxelts; | |
1092 | i > 0 && count > 0; | |
1093 | i--, count--) | |
1094 | { | |
1095 | printf_filtered ("\t"); | |
1096 | /* Note that print_formatted sets next_address for the next | |
1097 | object. */ | |
1098 | last_examine_address = next_address; | |
1099 | ||
c906108c | 1100 | /* The value to be displayed is not fetched greedily. |
5d51a2db MR |
1101 | Instead, to avoid the possibility of a fetched value not |
1102 | being used, its retrieval is delayed until the print code | |
c5aa993b JM |
1103 | uses it. When examining an instruction stream, the |
1104 | disassembler will perform its own memory fetch using just | |
1105 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
1106 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
1107 | is left with the byte sequence from the last complete | |
0df8b418 | 1108 | instruction fetched from memory? */ |
9b558729 TT |
1109 | last_examine_value |
1110 | = release_value (value_at_lazy (val_type, next_address)); | |
c906108c | 1111 | |
9b558729 | 1112 | print_formatted (last_examine_value.get (), size, &opts, gdb_stdout); |
a4642986 MR |
1113 | |
1114 | /* Display any branch delay slots following the final insn. */ | |
1115 | if (format == 'i' && count == 1) | |
1116 | count += branch_delay_insns; | |
c906108c SS |
1117 | } |
1118 | printf_filtered ("\n"); | |
1119 | gdb_flush (gdb_stdout); | |
1120 | } | |
bb556f1f TK |
1121 | |
1122 | if (need_to_update_next_address) | |
1123 | next_address = addr_rewound; | |
c906108c SS |
1124 | } |
1125 | \f | |
1126 | static void | |
8d89f51a | 1127 | validate_format (struct format_data fmt, const char *cmdname) |
c906108c SS |
1128 | { |
1129 | if (fmt.size != 0) | |
8a3fe4f8 | 1130 | error (_("Size letters are meaningless in \"%s\" command."), cmdname); |
c906108c | 1131 | if (fmt.count != 1) |
8a3fe4f8 | 1132 | error (_("Item count other than 1 is meaningless in \"%s\" command."), |
c906108c | 1133 | cmdname); |
ea37ba09 | 1134 | if (fmt.format == 'i') |
8a3fe4f8 | 1135 | error (_("Format letter \"%c\" is meaningless in \"%s\" command."), |
c906108c SS |
1136 | fmt.format, cmdname); |
1137 | } | |
1138 | ||
1c88ceb1 JK |
1139 | /* Parse print command format string into *FMTP and update *EXPP. |
1140 | CMDNAME should name the current command. */ | |
1141 | ||
1142 | void | |
1143 | print_command_parse_format (const char **expp, const char *cmdname, | |
1144 | struct format_data *fmtp) | |
1145 | { | |
1146 | const char *exp = *expp; | |
1147 | ||
1148 | if (exp && *exp == '/') | |
1149 | { | |
1150 | exp++; | |
1151 | *fmtp = decode_format (&exp, last_format, 0); | |
1152 | validate_format (*fmtp, cmdname); | |
1153 | last_format = fmtp->format; | |
1154 | } | |
1155 | else | |
1156 | { | |
1157 | fmtp->count = 1; | |
1158 | fmtp->format = 0; | |
1159 | fmtp->size = 0; | |
1160 | fmtp->raw = 0; | |
1161 | } | |
1162 | ||
1163 | *expp = exp; | |
1164 | } | |
1165 | ||
1166 | /* Print VAL to console according to *FMTP, including recording it to | |
1167 | the history. */ | |
1168 | ||
1169 | void | |
1170 | print_value (struct value *val, const struct format_data *fmtp) | |
1171 | { | |
1172 | struct value_print_options opts; | |
1173 | int histindex = record_latest_value (val); | |
1174 | ||
1175 | annotate_value_history_begin (histindex, value_type (val)); | |
1176 | ||
1177 | printf_filtered ("$%d = ", histindex); | |
1178 | ||
1179 | annotate_value_history_value (); | |
1180 | ||
1181 | get_formatted_print_options (&opts, fmtp->format); | |
1182 | opts.raw = fmtp->raw; | |
1183 | ||
1184 | print_formatted (val, fmtp->size, &opts, gdb_stdout); | |
1185 | printf_filtered ("\n"); | |
1186 | ||
1187 | annotate_value_history_end (); | |
1188 | } | |
1189 | ||
675dcf4f | 1190 | /* Evaluate string EXP as an expression in the current language and |
c5aa993b | 1191 | print the resulting value. EXP may contain a format specifier as the |
675dcf4f | 1192 | first argument ("/x myvar" for example, to print myvar in hex). */ |
c906108c SS |
1193 | |
1194 | static void | |
6f937416 | 1195 | print_command_1 (const char *exp, int voidprint) |
c906108c | 1196 | { |
3d6d86c6 | 1197 | struct value *val; |
c906108c | 1198 | struct format_data fmt; |
c906108c | 1199 | |
1c88ceb1 | 1200 | print_command_parse_format (&exp, "print", &fmt); |
c906108c SS |
1201 | |
1202 | if (exp && *exp) | |
1203 | { | |
4d01a485 PA |
1204 | expression_up expr = parse_expression (exp); |
1205 | val = evaluate_expression (expr.get ()); | |
c906108c SS |
1206 | } |
1207 | else | |
1208 | val = access_value_history (0); | |
1209 | ||
df407dfe AC |
1210 | if (voidprint || (val && value_type (val) && |
1211 | TYPE_CODE (value_type (val)) != TYPE_CODE_VOID)) | |
1c88ceb1 | 1212 | print_value (val, &fmt); |
c906108c SS |
1213 | } |
1214 | ||
c906108c | 1215 | static void |
0b39b52e | 1216 | print_command (const char *exp, int from_tty) |
c906108c | 1217 | { |
e93a8774 | 1218 | print_command_1 (exp, 1); |
c906108c SS |
1219 | } |
1220 | ||
675dcf4f | 1221 | /* Same as print, except it doesn't print void results. */ |
c906108c | 1222 | static void |
0b39b52e | 1223 | call_command (const char *exp, int from_tty) |
c906108c | 1224 | { |
e93a8774 | 1225 | print_command_1 (exp, 0); |
c906108c SS |
1226 | } |
1227 | ||
6f937416 PA |
1228 | /* Implementation of the "output" command. */ |
1229 | ||
1230 | static void | |
0b39b52e | 1231 | output_command (const char *exp, int from_tty) |
6f937416 PA |
1232 | { |
1233 | output_command_const (exp, from_tty); | |
1234 | } | |
1235 | ||
1236 | /* Like output_command, but takes a const string as argument. */ | |
1237 | ||
1238 | void | |
1239 | output_command_const (const char *exp, int from_tty) | |
c906108c | 1240 | { |
52f0bd74 | 1241 | char format = 0; |
3d6d86c6 | 1242 | struct value *val; |
c906108c | 1243 | struct format_data fmt; |
79a45b7d | 1244 | struct value_print_options opts; |
c906108c | 1245 | |
777ea8f1 | 1246 | fmt.size = 0; |
a6bac58e | 1247 | fmt.raw = 0; |
777ea8f1 | 1248 | |
c906108c SS |
1249 | if (exp && *exp == '/') |
1250 | { | |
1251 | exp++; | |
1252 | fmt = decode_format (&exp, 0, 0); | |
1253 | validate_format (fmt, "output"); | |
1254 | format = fmt.format; | |
1255 | } | |
1256 | ||
4d01a485 | 1257 | expression_up expr = parse_expression (exp); |
c906108c | 1258 | |
4d01a485 | 1259 | val = evaluate_expression (expr.get ()); |
c906108c | 1260 | |
df407dfe | 1261 | annotate_value_begin (value_type (val)); |
c906108c | 1262 | |
79a45b7d | 1263 | get_formatted_print_options (&opts, format); |
a6bac58e | 1264 | opts.raw = fmt.raw; |
79a45b7d | 1265 | print_formatted (val, fmt.size, &opts, gdb_stdout); |
c906108c SS |
1266 | |
1267 | annotate_value_end (); | |
1268 | ||
2acceee2 JM |
1269 | wrap_here (""); |
1270 | gdb_flush (gdb_stdout); | |
c906108c SS |
1271 | } |
1272 | ||
c906108c | 1273 | static void |
981a3fb3 | 1274 | set_command (const char *exp, int from_tty) |
c906108c | 1275 | { |
4d01a485 | 1276 | expression_up expr = parse_expression (exp); |
ad3bbd48 | 1277 | |
0ece64fd TG |
1278 | if (expr->nelts >= 1) |
1279 | switch (expr->elts[0].opcode) | |
1280 | { | |
1281 | case UNOP_PREINCREMENT: | |
1282 | case UNOP_POSTINCREMENT: | |
1283 | case UNOP_PREDECREMENT: | |
1284 | case UNOP_POSTDECREMENT: | |
1285 | case BINOP_ASSIGN: | |
1286 | case BINOP_ASSIGN_MODIFY: | |
1287 | case BINOP_COMMA: | |
1288 | break; | |
1289 | default: | |
1290 | warning | |
1291 | (_("Expression is not an assignment (and might have no effect)")); | |
1292 | } | |
52b3699b | 1293 | |
4d01a485 | 1294 | evaluate_expression (expr.get ()); |
c906108c SS |
1295 | } |
1296 | ||
c906108c | 1297 | static void |
1d12d88f | 1298 | info_symbol_command (const char *arg, int from_tty) |
c906108c SS |
1299 | { |
1300 | struct minimal_symbol *msymbol; | |
c5aa993b JM |
1301 | struct objfile *objfile; |
1302 | struct obj_section *osect; | |
c5aa993b JM |
1303 | CORE_ADDR addr, sect_addr; |
1304 | int matches = 0; | |
1305 | unsigned int offset; | |
c906108c SS |
1306 | |
1307 | if (!arg) | |
e2e0b3e5 | 1308 | error_no_arg (_("address")); |
c906108c SS |
1309 | |
1310 | addr = parse_and_eval_address (arg); | |
1311 | ALL_OBJSECTIONS (objfile, osect) | |
c5aa993b | 1312 | { |
94277a38 DJ |
1313 | /* Only process each object file once, even if there's a separate |
1314 | debug file. */ | |
1315 | if (objfile->separate_debug_objfile_backlink) | |
1316 | continue; | |
1317 | ||
714835d5 | 1318 | sect_addr = overlay_mapped_address (addr, osect); |
c906108c | 1319 | |
f1f6aadf PA |
1320 | if (obj_section_addr (osect) <= sect_addr |
1321 | && sect_addr < obj_section_endaddr (osect) | |
7cbd4a93 TT |
1322 | && (msymbol |
1323 | = lookup_minimal_symbol_by_pc_section (sect_addr, osect).minsym)) | |
c5aa993b | 1324 | { |
c14c28ba | 1325 | const char *obj_name, *mapped, *sec_name, *msym_name; |
5178ed48 | 1326 | const char *loc_string; |
e2fd701e | 1327 | struct cleanup *old_chain; |
c14c28ba | 1328 | |
c5aa993b | 1329 | matches = 1; |
77e371c0 | 1330 | offset = sect_addr - MSYMBOL_VALUE_ADDRESS (objfile, msymbol); |
c14c28ba PP |
1331 | mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped"); |
1332 | sec_name = osect->the_bfd_section->name; | |
efd66ac6 | 1333 | msym_name = MSYMBOL_PRINT_NAME (msymbol); |
c14c28ba | 1334 | |
e2fd701e DE |
1335 | /* Don't print the offset if it is zero. |
1336 | We assume there's no need to handle i18n of "sym + offset". */ | |
5178ed48 | 1337 | std::string string_holder; |
e2fd701e | 1338 | if (offset) |
5178ed48 TT |
1339 | { |
1340 | string_holder = string_printf ("%s + %u", msym_name, offset); | |
1341 | loc_string = string_holder.c_str (); | |
1342 | } | |
e2fd701e | 1343 | else |
5178ed48 | 1344 | loc_string = msym_name; |
e2fd701e | 1345 | |
4262abfb JK |
1346 | gdb_assert (osect->objfile && objfile_name (osect->objfile)); |
1347 | obj_name = objfile_name (osect->objfile); | |
c14c28ba PP |
1348 | |
1349 | if (MULTI_OBJFILE_P ()) | |
1350 | if (pc_in_unmapped_range (addr, osect)) | |
1351 | if (section_is_overlay (osect)) | |
e2fd701e | 1352 | printf_filtered (_("%s in load address range of " |
c14c28ba | 1353 | "%s overlay section %s of %s\n"), |
e2fd701e | 1354 | loc_string, mapped, sec_name, obj_name); |
c14c28ba | 1355 | else |
e2fd701e | 1356 | printf_filtered (_("%s in load address range of " |
c14c28ba | 1357 | "section %s of %s\n"), |
e2fd701e | 1358 | loc_string, sec_name, obj_name); |
c14c28ba PP |
1359 | else |
1360 | if (section_is_overlay (osect)) | |
e2fd701e DE |
1361 | printf_filtered (_("%s in %s overlay section %s of %s\n"), |
1362 | loc_string, mapped, sec_name, obj_name); | |
c14c28ba | 1363 | else |
e2fd701e DE |
1364 | printf_filtered (_("%s in section %s of %s\n"), |
1365 | loc_string, sec_name, obj_name); | |
c5aa993b | 1366 | else |
c14c28ba PP |
1367 | if (pc_in_unmapped_range (addr, osect)) |
1368 | if (section_is_overlay (osect)) | |
e2fd701e | 1369 | printf_filtered (_("%s in load address range of %s overlay " |
c14c28ba | 1370 | "section %s\n"), |
e2fd701e | 1371 | loc_string, mapped, sec_name); |
c14c28ba | 1372 | else |
e2fd701e DE |
1373 | printf_filtered (_("%s in load address range of section %s\n"), |
1374 | loc_string, sec_name); | |
c14c28ba PP |
1375 | else |
1376 | if (section_is_overlay (osect)) | |
e2fd701e DE |
1377 | printf_filtered (_("%s in %s overlay section %s\n"), |
1378 | loc_string, mapped, sec_name); | |
c14c28ba | 1379 | else |
e2fd701e DE |
1380 | printf_filtered (_("%s in section %s\n"), |
1381 | loc_string, sec_name); | |
c5aa993b JM |
1382 | } |
1383 | } | |
c906108c | 1384 | if (matches == 0) |
a3f17187 | 1385 | printf_filtered (_("No symbol matches %s.\n"), arg); |
c906108c SS |
1386 | } |
1387 | ||
c906108c | 1388 | static void |
1d12d88f | 1389 | info_address_command (const char *exp, int from_tty) |
c906108c | 1390 | { |
768a979c UW |
1391 | struct gdbarch *gdbarch; |
1392 | int regno; | |
52f0bd74 | 1393 | struct symbol *sym; |
7c7b6655 | 1394 | struct bound_minimal_symbol msymbol; |
52f0bd74 | 1395 | long val; |
714835d5 | 1396 | struct obj_section *section; |
08922a10 | 1397 | CORE_ADDR load_addr, context_pc = 0; |
1993b719 | 1398 | struct field_of_this_result is_a_field_of_this; |
c906108c SS |
1399 | |
1400 | if (exp == 0) | |
8a3fe4f8 | 1401 | error (_("Argument required.")); |
c906108c | 1402 | |
08922a10 | 1403 | sym = lookup_symbol (exp, get_selected_block (&context_pc), VAR_DOMAIN, |
d12307c1 | 1404 | &is_a_field_of_this).symbol; |
c906108c SS |
1405 | if (sym == NULL) |
1406 | { | |
1993b719 | 1407 | if (is_a_field_of_this.type != NULL) |
c906108c SS |
1408 | { |
1409 | printf_filtered ("Symbol \""); | |
1410 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1411 | current_language->la_language, DMGL_ANSI); | |
e2b23ee9 AF |
1412 | printf_filtered ("\" is a field of the local class variable "); |
1413 | if (current_language->la_language == language_objc) | |
2625d86c | 1414 | printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */ |
e2b23ee9 | 1415 | else |
2625d86c | 1416 | printf_filtered ("`this'\n"); |
c906108c SS |
1417 | return; |
1418 | } | |
1419 | ||
7c7b6655 | 1420 | msymbol = lookup_bound_minimal_symbol (exp); |
c906108c | 1421 | |
7c7b6655 | 1422 | if (msymbol.minsym != NULL) |
c906108c | 1423 | { |
7c7b6655 | 1424 | struct objfile *objfile = msymbol.objfile; |
e27d198c TT |
1425 | |
1426 | gdbarch = get_objfile_arch (objfile); | |
77e371c0 | 1427 | load_addr = BMSYMBOL_VALUE_ADDRESS (msymbol); |
c906108c SS |
1428 | |
1429 | printf_filtered ("Symbol \""); | |
1430 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1431 | current_language->la_language, DMGL_ANSI); | |
1432 | printf_filtered ("\" is at "); | |
5af949e3 | 1433 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
c906108c | 1434 | printf_filtered (" in a file compiled without debugging"); |
efd66ac6 | 1435 | section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym); |
c906108c SS |
1436 | if (section_is_overlay (section)) |
1437 | { | |
1438 | load_addr = overlay_unmapped_address (load_addr, section); | |
1439 | printf_filtered (",\n -- loaded at "); | |
5af949e3 | 1440 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1441 | printf_filtered (" in overlay section %s", |
1442 | section->the_bfd_section->name); | |
c906108c SS |
1443 | } |
1444 | printf_filtered (".\n"); | |
1445 | } | |
1446 | else | |
8a3fe4f8 | 1447 | error (_("No symbol \"%s\" in current context."), exp); |
c906108c SS |
1448 | return; |
1449 | } | |
1450 | ||
1451 | printf_filtered ("Symbol \""); | |
3567439c | 1452 | fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym), |
c906108c SS |
1453 | current_language->la_language, DMGL_ANSI); |
1454 | printf_filtered ("\" is "); | |
c5aa993b | 1455 | val = SYMBOL_VALUE (sym); |
1994afbf DE |
1456 | if (SYMBOL_OBJFILE_OWNED (sym)) |
1457 | section = SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym); | |
1458 | else | |
1459 | section = NULL; | |
08be3fe3 | 1460 | gdbarch = symbol_arch (sym); |
c906108c | 1461 | |
24d6c2a0 TT |
1462 | if (SYMBOL_COMPUTED_OPS (sym) != NULL) |
1463 | { | |
1464 | SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, context_pc, | |
1465 | gdb_stdout); | |
1466 | printf_filtered (".\n"); | |
1467 | return; | |
1468 | } | |
1469 | ||
c906108c SS |
1470 | switch (SYMBOL_CLASS (sym)) |
1471 | { | |
1472 | case LOC_CONST: | |
1473 | case LOC_CONST_BYTES: | |
1474 | printf_filtered ("constant"); | |
1475 | break; | |
1476 | ||
1477 | case LOC_LABEL: | |
1478 | printf_filtered ("a label at address "); | |
5af949e3 UW |
1479 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
1480 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); | |
c906108c SS |
1481 | if (section_is_overlay (section)) |
1482 | { | |
1483 | load_addr = overlay_unmapped_address (load_addr, section); | |
1484 | printf_filtered (",\n -- loaded at "); | |
5af949e3 | 1485 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1486 | printf_filtered (" in overlay section %s", |
1487 | section->the_bfd_section->name); | |
c906108c SS |
1488 | } |
1489 | break; | |
1490 | ||
4c2df51b | 1491 | case LOC_COMPUTED: |
24d6c2a0 | 1492 | gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method")); |
4c2df51b | 1493 | |
c906108c | 1494 | case LOC_REGISTER: |
768a979c UW |
1495 | /* GDBARCH is the architecture associated with the objfile the symbol |
1496 | is defined in; the target architecture may be different, and may | |
1497 | provide additional registers. However, we do not know the target | |
1498 | architecture at this point. We assume the objfile architecture | |
1499 | will contain all the standard registers that occur in debug info | |
1500 | in that objfile. */ | |
1501 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
1502 | ||
2a2d4dc3 AS |
1503 | if (SYMBOL_IS_ARGUMENT (sym)) |
1504 | printf_filtered (_("an argument in register %s"), | |
768a979c | 1505 | gdbarch_register_name (gdbarch, regno)); |
2a2d4dc3 AS |
1506 | else |
1507 | printf_filtered (_("a variable in register %s"), | |
768a979c | 1508 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1509 | break; |
1510 | ||
1511 | case LOC_STATIC: | |
a3f17187 | 1512 | printf_filtered (_("static storage at address ")); |
5af949e3 UW |
1513 | load_addr = SYMBOL_VALUE_ADDRESS (sym); |
1514 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); | |
c906108c SS |
1515 | if (section_is_overlay (section)) |
1516 | { | |
1517 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1518 | printf_filtered (_(",\n -- loaded at ")); |
5af949e3 | 1519 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1520 | printf_filtered (_(" in overlay section %s"), |
1521 | section->the_bfd_section->name); | |
c906108c SS |
1522 | } |
1523 | break; | |
1524 | ||
c906108c | 1525 | case LOC_REGPARM_ADDR: |
768a979c UW |
1526 | /* Note comment at LOC_REGISTER. */ |
1527 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); | |
675dcf4f | 1528 | printf_filtered (_("address of an argument in register %s"), |
768a979c | 1529 | gdbarch_register_name (gdbarch, regno)); |
c906108c SS |
1530 | break; |
1531 | ||
1532 | case LOC_ARG: | |
a3f17187 | 1533 | printf_filtered (_("an argument at offset %ld"), val); |
c906108c SS |
1534 | break; |
1535 | ||
c906108c | 1536 | case LOC_LOCAL: |
a3f17187 | 1537 | printf_filtered (_("a local variable at frame offset %ld"), val); |
c906108c SS |
1538 | break; |
1539 | ||
1540 | case LOC_REF_ARG: | |
a3f17187 | 1541 | printf_filtered (_("a reference argument at offset %ld"), val); |
c906108c SS |
1542 | break; |
1543 | ||
c906108c | 1544 | case LOC_TYPEDEF: |
a3f17187 | 1545 | printf_filtered (_("a typedef")); |
c906108c SS |
1546 | break; |
1547 | ||
1548 | case LOC_BLOCK: | |
a3f17187 | 1549 | printf_filtered (_("a function at address ")); |
675dcf4f | 1550 | load_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); |
5af949e3 | 1551 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
c906108c SS |
1552 | if (section_is_overlay (section)) |
1553 | { | |
1554 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1555 | printf_filtered (_(",\n -- loaded at ")); |
5af949e3 | 1556 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
714835d5 UW |
1557 | printf_filtered (_(" in overlay section %s"), |
1558 | section->the_bfd_section->name); | |
c906108c SS |
1559 | } |
1560 | break; | |
1561 | ||
1562 | case LOC_UNRESOLVED: | |
1563 | { | |
e27d198c | 1564 | struct bound_minimal_symbol msym; |
c906108c | 1565 | |
e27d198c TT |
1566 | msym = lookup_minimal_symbol_and_objfile (SYMBOL_LINKAGE_NAME (sym)); |
1567 | if (msym.minsym == NULL) | |
c906108c SS |
1568 | printf_filtered ("unresolved"); |
1569 | else | |
1570 | { | |
efd66ac6 | 1571 | section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
e0740f77 JK |
1572 | |
1573 | if (section | |
1574 | && (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0) | |
5382cfab PW |
1575 | { |
1576 | load_addr = MSYMBOL_VALUE_RAW_ADDRESS (msym.minsym); | |
1577 | printf_filtered (_("a thread-local variable at offset %s " | |
1578 | "in the thread-local storage for `%s'"), | |
1579 | paddress (gdbarch, load_addr), | |
1580 | objfile_name (section->objfile)); | |
1581 | } | |
e0740f77 | 1582 | else |
c906108c | 1583 | { |
5382cfab | 1584 | load_addr = BMSYMBOL_VALUE_ADDRESS (msym); |
e0740f77 | 1585 | printf_filtered (_("static storage at address ")); |
5af949e3 | 1586 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
e0740f77 JK |
1587 | if (section_is_overlay (section)) |
1588 | { | |
1589 | load_addr = overlay_unmapped_address (load_addr, section); | |
1590 | printf_filtered (_(",\n -- loaded at ")); | |
5af949e3 | 1591 | fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout); |
e0740f77 JK |
1592 | printf_filtered (_(" in overlay section %s"), |
1593 | section->the_bfd_section->name); | |
1594 | } | |
c906108c SS |
1595 | } |
1596 | } | |
1597 | } | |
1598 | break; | |
1599 | ||
c906108c | 1600 | case LOC_OPTIMIZED_OUT: |
a3f17187 | 1601 | printf_filtered (_("optimized out")); |
c906108c | 1602 | break; |
c5aa993b | 1603 | |
c906108c | 1604 | default: |
a3f17187 | 1605 | printf_filtered (_("of unknown (botched) type")); |
c906108c SS |
1606 | break; |
1607 | } | |
1608 | printf_filtered (".\n"); | |
1609 | } | |
1610 | \f | |
675dcf4f MK |
1611 | |
1612 | static void | |
0b39b52e | 1613 | x_command (const char *exp, int from_tty) |
c906108c | 1614 | { |
c906108c | 1615 | struct format_data fmt; |
c906108c SS |
1616 | struct value *val; |
1617 | ||
a6bac58e | 1618 | fmt.format = last_format ? last_format : 'x'; |
c906108c SS |
1619 | fmt.size = last_size; |
1620 | fmt.count = 1; | |
a6bac58e | 1621 | fmt.raw = 0; |
c906108c | 1622 | |
9be2ae8f TT |
1623 | /* If there is no expression and no format, use the most recent |
1624 | count. */ | |
1625 | if (exp == nullptr && last_count > 0) | |
1626 | fmt.count = last_count; | |
1627 | ||
c906108c SS |
1628 | if (exp && *exp == '/') |
1629 | { | |
6f937416 PA |
1630 | const char *tmp = exp + 1; |
1631 | ||
1632 | fmt = decode_format (&tmp, last_format, last_size); | |
1633 | exp = (char *) tmp; | |
c906108c SS |
1634 | } |
1635 | ||
9be2ae8f TT |
1636 | last_count = fmt.count; |
1637 | ||
c906108c SS |
1638 | /* If we have an expression, evaluate it and use it as the address. */ |
1639 | ||
1640 | if (exp != 0 && *exp != 0) | |
1641 | { | |
4d01a485 | 1642 | expression_up expr = parse_expression (exp); |
675dcf4f MK |
1643 | /* Cause expression not to be there any more if this command is |
1644 | repeated with Newline. But don't clobber a user-defined | |
1645 | command's definition. */ | |
c906108c | 1646 | if (from_tty) |
85c4be7c | 1647 | set_repeat_arguments (""); |
4d01a485 | 1648 | val = evaluate_expression (expr.get ()); |
aa006118 | 1649 | if (TYPE_IS_REFERENCE (value_type (val))) |
e1c34c5d | 1650 | val = coerce_ref (val); |
c906108c | 1651 | /* In rvalue contexts, such as this, functions are coerced into |
c5aa993b | 1652 | pointers to functions. This makes "x/i main" work. */ |
c0d8fd9a | 1653 | if (/* last_format == 'i' && */ |
df407dfe | 1654 | TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC |
c5aa993b | 1655 | && VALUE_LVAL (val) == lval_memory) |
42ae5230 | 1656 | next_address = value_address (val); |
c906108c | 1657 | else |
1aa20aa8 | 1658 | next_address = value_as_address (val); |
5d3729b5 UW |
1659 | |
1660 | next_gdbarch = expr->gdbarch; | |
c906108c SS |
1661 | } |
1662 | ||
5d3729b5 UW |
1663 | if (!next_gdbarch) |
1664 | error_no_arg (_("starting display address")); | |
1665 | ||
1666 | do_examine (fmt, next_gdbarch, next_address); | |
c906108c | 1667 | |
675dcf4f | 1668 | /* If the examine succeeds, we remember its size and format for next |
9a22f0d0 PM |
1669 | time. Set last_size to 'b' for strings. */ |
1670 | if (fmt.format == 's') | |
1671 | last_size = 'b'; | |
1672 | else | |
1673 | last_size = fmt.size; | |
c906108c SS |
1674 | last_format = fmt.format; |
1675 | ||
0df8b418 | 1676 | /* Set a couple of internal variables if appropriate. */ |
9b558729 | 1677 | if (last_examine_value != nullptr) |
c906108c SS |
1678 | { |
1679 | /* Make last address examined available to the user as $_. Use | |
c5aa993b | 1680 | the correct pointer type. */ |
4478b372 | 1681 | struct type *pointer_type |
9b558729 | 1682 | = lookup_pointer_type (value_type (last_examine_value.get ())); |
c906108c | 1683 | set_internalvar (lookup_internalvar ("_"), |
4478b372 JB |
1684 | value_from_pointer (pointer_type, |
1685 | last_examine_address)); | |
c5aa993b | 1686 | |
675dcf4f MK |
1687 | /* Make contents of last address examined available to the user |
1688 | as $__. If the last value has not been fetched from memory | |
1689 | then don't fetch it now; instead mark it by voiding the $__ | |
1690 | variable. */ | |
9b558729 | 1691 | if (value_lazy (last_examine_value.get ())) |
4fa62494 | 1692 | clear_internalvar (lookup_internalvar ("__")); |
c906108c | 1693 | else |
9b558729 | 1694 | set_internalvar (lookup_internalvar ("__"), last_examine_value.get ()); |
c906108c SS |
1695 | } |
1696 | } | |
c906108c | 1697 | \f |
c5aa993b | 1698 | |
c906108c SS |
1699 | /* Add an expression to the auto-display chain. |
1700 | Specify the expression. */ | |
1701 | ||
1702 | static void | |
0b39b52e | 1703 | display_command (const char *arg, int from_tty) |
c906108c SS |
1704 | { |
1705 | struct format_data fmt; | |
fe978cb0 | 1706 | struct display *newobj; |
6f937416 | 1707 | const char *exp = arg; |
c906108c | 1708 | |
7bd0be3a | 1709 | if (exp == 0) |
c906108c | 1710 | { |
7bd0be3a AB |
1711 | do_displays (); |
1712 | return; | |
1713 | } | |
c906108c | 1714 | |
7bd0be3a AB |
1715 | if (*exp == '/') |
1716 | { | |
1717 | exp++; | |
1718 | fmt = decode_format (&exp, 0, 0); | |
1719 | if (fmt.size && fmt.format == 0) | |
1720 | fmt.format = 'x'; | |
1721 | if (fmt.format == 'i' || fmt.format == 's') | |
1722 | fmt.size = 'b'; | |
1723 | } | |
1724 | else | |
1725 | { | |
1726 | fmt.format = 0; | |
1727 | fmt.size = 0; | |
1728 | fmt.count = 0; | |
1729 | fmt.raw = 0; | |
1730 | } | |
c906108c | 1731 | |
aee1fcdf | 1732 | innermost_block.reset (); |
4d01a485 | 1733 | expression_up expr = parse_expression (exp); |
c906108c | 1734 | |
4d01a485 | 1735 | newobj = new display (); |
c906108c | 1736 | |
7bd0be3a | 1737 | newobj->exp_string = xstrdup (exp); |
b22e99fd | 1738 | newobj->exp = std::move (expr); |
aee1fcdf | 1739 | newobj->block = innermost_block.block (); |
7bd0be3a | 1740 | newobj->pspace = current_program_space; |
7bd0be3a AB |
1741 | newobj->number = ++display_number; |
1742 | newobj->format = fmt; | |
1743 | newobj->enabled_p = 1; | |
62147a22 PA |
1744 | newobj->next = NULL; |
1745 | ||
1746 | if (display_chain == NULL) | |
1747 | display_chain = newobj; | |
1748 | else | |
1749 | { | |
1750 | struct display *last; | |
1751 | ||
1752 | for (last = display_chain; last->next != NULL; last = last->next) | |
1753 | ; | |
1754 | last->next = newobj; | |
1755 | } | |
c906108c | 1756 | |
7bd0be3a AB |
1757 | if (from_tty) |
1758 | do_one_display (newobj); | |
c906108c | 1759 | |
7bd0be3a | 1760 | dont_repeat (); |
c906108c SS |
1761 | } |
1762 | ||
1763 | static void | |
fba45db2 | 1764 | free_display (struct display *d) |
c906108c | 1765 | { |
fa8a61dc | 1766 | xfree (d->exp_string); |
4d01a485 | 1767 | delete d; |
c906108c SS |
1768 | } |
1769 | ||
675dcf4f MK |
1770 | /* Clear out the display_chain. Done when new symtabs are loaded, |
1771 | since this invalidates the types stored in many expressions. */ | |
c906108c SS |
1772 | |
1773 | void | |
fba45db2 | 1774 | clear_displays (void) |
c906108c | 1775 | { |
52f0bd74 | 1776 | struct display *d; |
c906108c SS |
1777 | |
1778 | while ((d = display_chain) != NULL) | |
1779 | { | |
c906108c | 1780 | display_chain = d->next; |
fa8a61dc | 1781 | free_display (d); |
c906108c SS |
1782 | } |
1783 | } | |
1784 | ||
3c3fe74c | 1785 | /* Delete the auto-display DISPLAY. */ |
c906108c SS |
1786 | |
1787 | static void | |
3c3fe74c | 1788 | delete_display (struct display *display) |
c906108c | 1789 | { |
3c3fe74c | 1790 | struct display *d; |
c906108c | 1791 | |
3c3fe74c | 1792 | gdb_assert (display != NULL); |
c906108c | 1793 | |
3c3fe74c PA |
1794 | if (display_chain == display) |
1795 | display_chain = display->next; | |
1796 | ||
1797 | ALL_DISPLAYS (d) | |
1798 | if (d->next == display) | |
c906108c | 1799 | { |
3c3fe74c PA |
1800 | d->next = display->next; |
1801 | break; | |
c906108c | 1802 | } |
3c3fe74c PA |
1803 | |
1804 | free_display (display); | |
c906108c SS |
1805 | } |
1806 | ||
c9174737 PA |
1807 | /* Call FUNCTION on each of the displays whose numbers are given in |
1808 | ARGS. DATA is passed unmodified to FUNCTION. */ | |
c906108c SS |
1809 | |
1810 | static void | |
77763700 | 1811 | map_display_numbers (const char *args, |
c9174737 PA |
1812 | void (*function) (struct display *, |
1813 | void *), | |
1814 | void *data) | |
c906108c | 1815 | { |
c9174737 | 1816 | int num; |
c906108c | 1817 | |
c9174737 PA |
1818 | if (args == NULL) |
1819 | error_no_arg (_("one or more display numbers")); | |
c906108c | 1820 | |
bfd28288 | 1821 | number_or_range_parser parser (args); |
c9174737 | 1822 | |
bfd28288 | 1823 | while (!parser.finished ()) |
c906108c | 1824 | { |
bfd28288 | 1825 | const char *p = parser.cur_tok (); |
c906108c | 1826 | |
bfd28288 | 1827 | num = parser.get_number (); |
3c3fe74c PA |
1828 | if (num == 0) |
1829 | warning (_("bad display number at or near '%s'"), p); | |
1830 | else | |
1831 | { | |
c9174737 | 1832 | struct display *d, *tmp; |
c906108c | 1833 | |
c9174737 | 1834 | ALL_DISPLAYS_SAFE (d, tmp) |
3c3fe74c PA |
1835 | if (d->number == num) |
1836 | break; | |
1837 | if (d == NULL) | |
1838 | printf_unfiltered (_("No display number %d.\n"), num); | |
1839 | else | |
c9174737 | 1840 | function (d, data); |
3c3fe74c | 1841 | } |
c906108c | 1842 | } |
c9174737 PA |
1843 | } |
1844 | ||
1845 | /* Callback for map_display_numbers, that deletes a display. */ | |
1846 | ||
1847 | static void | |
1848 | do_delete_display (struct display *d, void *data) | |
1849 | { | |
1850 | delete_display (d); | |
1851 | } | |
1852 | ||
1853 | /* "undisplay" command. */ | |
1854 | ||
1855 | static void | |
77763700 | 1856 | undisplay_command (const char *args, int from_tty) |
c9174737 | 1857 | { |
c9174737 PA |
1858 | if (args == NULL) |
1859 | { | |
1860 | if (query (_("Delete all auto-display expressions? "))) | |
1861 | clear_displays (); | |
1862 | dont_repeat (); | |
1863 | return; | |
1864 | } | |
1865 | ||
1866 | map_display_numbers (args, do_delete_display, NULL); | |
c906108c SS |
1867 | dont_repeat (); |
1868 | } | |
1869 | ||
1870 | /* Display a single auto-display. | |
1871 | Do nothing if the display cannot be printed in the current context, | |
0df8b418 | 1872 | or if the display is disabled. */ |
c906108c SS |
1873 | |
1874 | static void | |
fba45db2 | 1875 | do_one_display (struct display *d) |
c906108c SS |
1876 | { |
1877 | int within_current_scope; | |
1878 | ||
b5de0fa7 | 1879 | if (d->enabled_p == 0) |
c906108c SS |
1880 | return; |
1881 | ||
704e9165 UW |
1882 | /* The expression carries the architecture that was used at parse time. |
1883 | This is a problem if the expression depends on architecture features | |
1884 | (e.g. register numbers), and the current architecture is now different. | |
1885 | For example, a display statement like "display/i $pc" is expected to | |
1886 | display the PC register of the current architecture, not the arch at | |
1887 | the time the display command was given. Therefore, we re-parse the | |
1888 | expression if the current architecture has changed. */ | |
1889 | if (d->exp != NULL && d->exp->gdbarch != get_current_arch ()) | |
1890 | { | |
4d01a485 | 1891 | d->exp.reset (); |
704e9165 UW |
1892 | d->block = NULL; |
1893 | } | |
1894 | ||
a3247a22 PP |
1895 | if (d->exp == NULL) |
1896 | { | |
ad3bbd48 | 1897 | |
492d29ea | 1898 | TRY |
a3247a22 | 1899 | { |
aee1fcdf | 1900 | innermost_block.reset (); |
a3247a22 | 1901 | d->exp = parse_expression (d->exp_string); |
aee1fcdf | 1902 | d->block = innermost_block.block (); |
a3247a22 | 1903 | } |
492d29ea | 1904 | CATCH (ex, RETURN_MASK_ALL) |
a3247a22 PP |
1905 | { |
1906 | /* Can't re-parse the expression. Disable this display item. */ | |
1907 | d->enabled_p = 0; | |
1908 | warning (_("Unable to display \"%s\": %s"), | |
1909 | d->exp_string, ex.message); | |
1910 | return; | |
1911 | } | |
492d29ea | 1912 | END_CATCH |
a3247a22 PP |
1913 | } |
1914 | ||
c906108c | 1915 | if (d->block) |
6c95b8df PA |
1916 | { |
1917 | if (d->pspace == current_program_space) | |
1918 | within_current_scope = contained_in (get_selected_block (0), d->block); | |
1919 | else | |
1920 | within_current_scope = 0; | |
1921 | } | |
c906108c SS |
1922 | else |
1923 | within_current_scope = 1; | |
1924 | if (!within_current_scope) | |
1925 | return; | |
1926 | ||
b7b633e9 TT |
1927 | scoped_restore save_display_number |
1928 | = make_scoped_restore (¤t_display_number, d->number); | |
c906108c SS |
1929 | |
1930 | annotate_display_begin (); | |
1931 | printf_filtered ("%d", d->number); | |
1932 | annotate_display_number_end (); | |
1933 | printf_filtered (": "); | |
1934 | if (d->format.size) | |
1935 | { | |
c906108c SS |
1936 | |
1937 | annotate_display_format (); | |
1938 | ||
1939 | printf_filtered ("x/"); | |
1940 | if (d->format.count != 1) | |
1941 | printf_filtered ("%d", d->format.count); | |
1942 | printf_filtered ("%c", d->format.format); | |
1943 | if (d->format.format != 'i' && d->format.format != 's') | |
1944 | printf_filtered ("%c", d->format.size); | |
1945 | printf_filtered (" "); | |
1946 | ||
1947 | annotate_display_expression (); | |
1948 | ||
fa8a61dc | 1949 | puts_filtered (d->exp_string); |
c906108c SS |
1950 | annotate_display_expression_end (); |
1951 | ||
6a2eb474 | 1952 | if (d->format.count != 1 || d->format.format == 'i') |
c906108c SS |
1953 | printf_filtered ("\n"); |
1954 | else | |
1955 | printf_filtered (" "); | |
c5aa993b | 1956 | |
c906108c SS |
1957 | annotate_display_value (); |
1958 | ||
492d29ea | 1959 | TRY |
9d8fa392 PA |
1960 | { |
1961 | struct value *val; | |
1962 | CORE_ADDR addr; | |
1963 | ||
4d01a485 | 1964 | val = evaluate_expression (d->exp.get ()); |
9d8fa392 PA |
1965 | addr = value_as_address (val); |
1966 | if (d->format.format == 'i') | |
1967 | addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr); | |
1968 | do_examine (d->format, d->exp->gdbarch, addr); | |
1969 | } | |
492d29ea PA |
1970 | CATCH (ex, RETURN_MASK_ERROR) |
1971 | { | |
1972 | fprintf_filtered (gdb_stdout, _("<error: %s>\n"), ex.message); | |
1973 | } | |
1974 | END_CATCH | |
c906108c SS |
1975 | } |
1976 | else | |
1977 | { | |
79a45b7d TT |
1978 | struct value_print_options opts; |
1979 | ||
c906108c SS |
1980 | annotate_display_format (); |
1981 | ||
1982 | if (d->format.format) | |
1983 | printf_filtered ("/%c ", d->format.format); | |
1984 | ||
1985 | annotate_display_expression (); | |
1986 | ||
fa8a61dc | 1987 | puts_filtered (d->exp_string); |
c906108c SS |
1988 | annotate_display_expression_end (); |
1989 | ||
1990 | printf_filtered (" = "); | |
1991 | ||
1992 | annotate_display_expression (); | |
1993 | ||
79a45b7d | 1994 | get_formatted_print_options (&opts, d->format.format); |
a6bac58e | 1995 | opts.raw = d->format.raw; |
9d8fa392 | 1996 | |
492d29ea | 1997 | TRY |
9d8fa392 PA |
1998 | { |
1999 | struct value *val; | |
2000 | ||
4d01a485 | 2001 | val = evaluate_expression (d->exp.get ()); |
9d8fa392 PA |
2002 | print_formatted (val, d->format.size, &opts, gdb_stdout); |
2003 | } | |
492d29ea PA |
2004 | CATCH (ex, RETURN_MASK_ERROR) |
2005 | { | |
2006 | fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.message); | |
2007 | } | |
2008 | END_CATCH | |
2009 | ||
c906108c SS |
2010 | printf_filtered ("\n"); |
2011 | } | |
2012 | ||
2013 | annotate_display_end (); | |
2014 | ||
2015 | gdb_flush (gdb_stdout); | |
c906108c SS |
2016 | } |
2017 | ||
2018 | /* Display all of the values on the auto-display chain which can be | |
2019 | evaluated in the current scope. */ | |
2020 | ||
2021 | void | |
fba45db2 | 2022 | do_displays (void) |
c906108c | 2023 | { |
52f0bd74 | 2024 | struct display *d; |
c906108c SS |
2025 | |
2026 | for (d = display_chain; d; d = d->next) | |
2027 | do_one_display (d); | |
2028 | } | |
2029 | ||
2030 | /* Delete the auto-display which we were in the process of displaying. | |
2031 | This is done when there is an error or a signal. */ | |
2032 | ||
2033 | void | |
fba45db2 | 2034 | disable_display (int num) |
c906108c | 2035 | { |
52f0bd74 | 2036 | struct display *d; |
c906108c SS |
2037 | |
2038 | for (d = display_chain; d; d = d->next) | |
2039 | if (d->number == num) | |
2040 | { | |
b5de0fa7 | 2041 | d->enabled_p = 0; |
c906108c SS |
2042 | return; |
2043 | } | |
a3f17187 | 2044 | printf_unfiltered (_("No display number %d.\n"), num); |
c906108c | 2045 | } |
c5aa993b | 2046 | |
c906108c | 2047 | void |
fba45db2 | 2048 | disable_current_display (void) |
c906108c SS |
2049 | { |
2050 | if (current_display_number >= 0) | |
2051 | { | |
2052 | disable_display (current_display_number); | |
3e43a32a MS |
2053 | fprintf_unfiltered (gdb_stderr, |
2054 | _("Disabling display %d to " | |
2055 | "avoid infinite recursion.\n"), | |
c5aa993b | 2056 | current_display_number); |
c906108c SS |
2057 | } |
2058 | current_display_number = -1; | |
2059 | } | |
2060 | ||
2061 | static void | |
1d12d88f | 2062 | info_display_command (const char *ignore, int from_tty) |
c906108c | 2063 | { |
52f0bd74 | 2064 | struct display *d; |
c906108c SS |
2065 | |
2066 | if (!display_chain) | |
a3f17187 | 2067 | printf_unfiltered (_("There are no auto-display expressions now.\n")); |
c906108c | 2068 | else |
a3f17187 AC |
2069 | printf_filtered (_("Auto-display expressions now in effect:\n\ |
2070 | Num Enb Expression\n")); | |
c906108c SS |
2071 | |
2072 | for (d = display_chain; d; d = d->next) | |
2073 | { | |
b5de0fa7 | 2074 | printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]); |
c906108c SS |
2075 | if (d->format.size) |
2076 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
c5aa993b | 2077 | d->format.format); |
c906108c SS |
2078 | else if (d->format.format) |
2079 | printf_filtered ("/%c ", d->format.format); | |
fa8a61dc | 2080 | puts_filtered (d->exp_string); |
ae767bfb | 2081 | if (d->block && !contained_in (get_selected_block (0), d->block)) |
a3f17187 | 2082 | printf_filtered (_(" (cannot be evaluated in the current context)")); |
c906108c SS |
2083 | printf_filtered ("\n"); |
2084 | gdb_flush (gdb_stdout); | |
2085 | } | |
2086 | } | |
2087 | ||
c9174737 PA |
2088 | /* Callback fo map_display_numbers, that enables or disables the |
2089 | passed in display D. */ | |
2090 | ||
c906108c | 2091 | static void |
c9174737 | 2092 | do_enable_disable_display (struct display *d, void *data) |
c906108c | 2093 | { |
c9174737 PA |
2094 | d->enabled_p = *(int *) data; |
2095 | } | |
c906108c | 2096 | |
c9174737 PA |
2097 | /* Implamentation of both the "disable display" and "enable display" |
2098 | commands. ENABLE decides what to do. */ | |
2099 | ||
2100 | static void | |
77763700 | 2101 | enable_disable_display_command (const char *args, int from_tty, int enable) |
c9174737 PA |
2102 | { |
2103 | if (args == NULL) | |
c906108c | 2104 | { |
c9174737 | 2105 | struct display *d; |
c5aa993b | 2106 | |
c9174737 PA |
2107 | ALL_DISPLAYS (d) |
2108 | d->enabled_p = enable; | |
2109 | return; | |
2110 | } | |
c5aa993b | 2111 | |
c9174737 | 2112 | map_display_numbers (args, do_enable_disable_display, &enable); |
c906108c SS |
2113 | } |
2114 | ||
c9174737 PA |
2115 | /* The "enable display" command. */ |
2116 | ||
c906108c | 2117 | static void |
77763700 | 2118 | enable_display_command (const char *args, int from_tty) |
c906108c | 2119 | { |
c9174737 PA |
2120 | enable_disable_display_command (args, from_tty, 1); |
2121 | } | |
c5aa993b | 2122 | |
c9174737 | 2123 | /* The "disable display" command. */ |
c906108c | 2124 | |
c9174737 | 2125 | static void |
77763700 | 2126 | disable_display_command (const char *args, int from_tty) |
c9174737 PA |
2127 | { |
2128 | enable_disable_display_command (args, from_tty, 0); | |
c906108c | 2129 | } |
a3247a22 | 2130 | |
a3247a22 PP |
2131 | /* display_chain items point to blocks and expressions. Some expressions in |
2132 | turn may point to symbols. | |
2133 | Both symbols and blocks are obstack_alloc'd on objfile_stack, and are | |
2134 | obstack_free'd when a shared library is unloaded. | |
2135 | Clear pointers that are about to become dangling. | |
2136 | Both .exp and .block fields will be restored next time we need to display | |
2137 | an item by re-parsing .exp_string field in the new execution context. */ | |
2138 | ||
2139 | static void | |
63644780 | 2140 | clear_dangling_display_expressions (struct objfile *objfile) |
a3247a22 PP |
2141 | { |
2142 | struct display *d; | |
63644780 | 2143 | struct program_space *pspace; |
a3247a22 | 2144 | |
c0201579 JK |
2145 | /* With no symbol file we cannot have a block or expression from it. */ |
2146 | if (objfile == NULL) | |
2147 | return; | |
63644780 | 2148 | pspace = objfile->pspace; |
c0201579 | 2149 | if (objfile->separate_debug_objfile_backlink) |
63644780 NB |
2150 | { |
2151 | objfile = objfile->separate_debug_objfile_backlink; | |
2152 | gdb_assert (objfile->pspace == pspace); | |
2153 | } | |
c0201579 JK |
2154 | |
2155 | for (d = display_chain; d != NULL; d = d->next) | |
a3247a22 | 2156 | { |
63644780 | 2157 | if (d->pspace != pspace) |
c0201579 JK |
2158 | continue; |
2159 | ||
2160 | if (lookup_objfile_from_block (d->block) == objfile | |
4d01a485 | 2161 | || (d->exp != NULL && exp_uses_objfile (d->exp.get (), objfile))) |
c0201579 | 2162 | { |
4d01a485 | 2163 | d->exp.reset (); |
c0201579 JK |
2164 | d->block = NULL; |
2165 | } | |
a3247a22 PP |
2166 | } |
2167 | } | |
c906108c | 2168 | \f |
c5aa993b | 2169 | |
675dcf4f | 2170 | /* Print the value in stack frame FRAME of a variable specified by a |
aad95b57 TT |
2171 | struct symbol. NAME is the name to print; if NULL then VAR's print |
2172 | name will be used. STREAM is the ui_file on which to print the | |
2173 | value. INDENT specifies the number of indent levels to print | |
8f043999 JK |
2174 | before printing the variable name. |
2175 | ||
2176 | This function invalidates FRAME. */ | |
c906108c SS |
2177 | |
2178 | void | |
aad95b57 TT |
2179 | print_variable_and_value (const char *name, struct symbol *var, |
2180 | struct frame_info *frame, | |
2181 | struct ui_file *stream, int indent) | |
c906108c | 2182 | { |
c906108c | 2183 | |
aad95b57 TT |
2184 | if (!name) |
2185 | name = SYMBOL_PRINT_NAME (var); | |
2186 | ||
2187 | fprintf_filtered (stream, "%s%s = ", n_spaces (2 * indent), name); | |
492d29ea | 2188 | TRY |
0f6a939d PM |
2189 | { |
2190 | struct value *val; | |
2191 | struct value_print_options opts; | |
aad95b57 | 2192 | |
63e43d3a PMR |
2193 | /* READ_VAR_VALUE needs a block in order to deal with non-local |
2194 | references (i.e. to handle nested functions). In this context, we | |
2195 | print variables that are local to this frame, so we can avoid passing | |
2196 | a block to it. */ | |
2197 | val = read_var_value (var, NULL, frame); | |
0f6a939d | 2198 | get_user_print_options (&opts); |
3343315b | 2199 | opts.deref_ref = 1; |
0f6a939d | 2200 | common_val_print (val, stream, indent, &opts, current_language); |
8f043999 JK |
2201 | |
2202 | /* common_val_print invalidates FRAME when a pretty printer calls inferior | |
2203 | function. */ | |
2204 | frame = NULL; | |
0f6a939d | 2205 | } |
492d29ea PA |
2206 | CATCH (except, RETURN_MASK_ERROR) |
2207 | { | |
2208 | fprintf_filtered(stream, "<error reading variable %s (%s)>", name, | |
2209 | except.message); | |
2210 | } | |
2211 | END_CATCH | |
2212 | ||
aad95b57 | 2213 | fprintf_filtered (stream, "\n"); |
c906108c SS |
2214 | } |
2215 | ||
c2792f5a DE |
2216 | /* Subroutine of ui_printf to simplify it. |
2217 | Print VALUE to STREAM using FORMAT. | |
e12f57ab | 2218 | VALUE is a C-style string on the target. */ |
c2792f5a DE |
2219 | |
2220 | static void | |
2221 | printf_c_string (struct ui_file *stream, const char *format, | |
2222 | struct value *value) | |
2223 | { | |
2224 | gdb_byte *str; | |
2225 | CORE_ADDR tem; | |
2226 | int j; | |
2227 | ||
2228 | tem = value_as_address (value); | |
3ae9ce5d TT |
2229 | if (tem == 0) |
2230 | { | |
2231 | fprintf_filtered (stream, format, "(null)"); | |
2232 | return; | |
2233 | } | |
c2792f5a DE |
2234 | |
2235 | /* This is a %s argument. Find the length of the string. */ | |
2236 | for (j = 0;; j++) | |
2237 | { | |
2238 | gdb_byte c; | |
2239 | ||
2240 | QUIT; | |
2241 | read_memory (tem + j, &c, 1); | |
2242 | if (c == 0) | |
2243 | break; | |
2244 | } | |
2245 | ||
2246 | /* Copy the string contents into a string inside GDB. */ | |
2247 | str = (gdb_byte *) alloca (j + 1); | |
2248 | if (j != 0) | |
2249 | read_memory (tem, str, j); | |
2250 | str[j] = 0; | |
2251 | ||
2252 | fprintf_filtered (stream, format, (char *) str); | |
2253 | } | |
2254 | ||
2255 | /* Subroutine of ui_printf to simplify it. | |
2256 | Print VALUE to STREAM using FORMAT. | |
e12f57ab | 2257 | VALUE is a wide C-style string on the target. */ |
c2792f5a DE |
2258 | |
2259 | static void | |
2260 | printf_wide_c_string (struct ui_file *stream, const char *format, | |
2261 | struct value *value) | |
2262 | { | |
2263 | gdb_byte *str; | |
2264 | CORE_ADDR tem; | |
2265 | int j; | |
2266 | struct gdbarch *gdbarch = get_type_arch (value_type (value)); | |
2267 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
2268 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
2269 | "wchar_t", NULL, 0); | |
2270 | int wcwidth = TYPE_LENGTH (wctype); | |
224c3ddb | 2271 | gdb_byte *buf = (gdb_byte *) alloca (wcwidth); |
c2792f5a DE |
2272 | |
2273 | tem = value_as_address (value); | |
3ae9ce5d TT |
2274 | if (tem == 0) |
2275 | { | |
2276 | fprintf_filtered (stream, format, "(null)"); | |
2277 | return; | |
2278 | } | |
c2792f5a DE |
2279 | |
2280 | /* This is a %s argument. Find the length of the string. */ | |
2281 | for (j = 0;; j += wcwidth) | |
2282 | { | |
2283 | QUIT; | |
2284 | read_memory (tem + j, buf, wcwidth); | |
2285 | if (extract_unsigned_integer (buf, wcwidth, byte_order) == 0) | |
2286 | break; | |
2287 | } | |
2288 | ||
2289 | /* Copy the string contents into a string inside GDB. */ | |
2290 | str = (gdb_byte *) alloca (j + wcwidth); | |
2291 | if (j != 0) | |
2292 | read_memory (tem, str, j); | |
2293 | memset (&str[j], 0, wcwidth); | |
2294 | ||
8268c778 | 2295 | auto_obstack output; |
c2792f5a DE |
2296 | |
2297 | convert_between_encodings (target_wide_charset (gdbarch), | |
2298 | host_charset (), | |
2299 | str, j, wcwidth, | |
2300 | &output, translit_char); | |
2301 | obstack_grow_str0 (&output, ""); | |
2302 | ||
2303 | fprintf_filtered (stream, format, obstack_base (&output)); | |
c2792f5a DE |
2304 | } |
2305 | ||
2306 | /* Subroutine of ui_printf to simplify it. | |
16e812b2 | 2307 | Print VALUE, a floating point value, to STREAM using FORMAT. */ |
c2792f5a DE |
2308 | |
2309 | static void | |
16e812b2 UW |
2310 | printf_floating (struct ui_file *stream, const char *format, |
2311 | struct value *value, enum argclass argclass) | |
c2792f5a | 2312 | { |
c2792f5a DE |
2313 | /* Parameter data. */ |
2314 | struct type *param_type = value_type (value); | |
2315 | struct gdbarch *gdbarch = get_type_arch (param_type); | |
2316 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
2317 | ||
16e812b2 UW |
2318 | /* Determine target type corresponding to the format string. */ |
2319 | struct type *fmt_type; | |
2320 | switch (argclass) | |
c2792f5a | 2321 | { |
16e812b2 UW |
2322 | case double_arg: |
2323 | fmt_type = builtin_type (gdbarch)->builtin_double; | |
2324 | break; | |
2325 | case long_double_arg: | |
2326 | fmt_type = builtin_type (gdbarch)->builtin_long_double; | |
2327 | break; | |
2328 | case dec32float_arg: | |
2329 | fmt_type = builtin_type (gdbarch)->builtin_decfloat; | |
2330 | break; | |
2331 | case dec64float_arg: | |
2332 | fmt_type = builtin_type (gdbarch)->builtin_decdouble; | |
2333 | break; | |
2334 | case dec128float_arg: | |
2335 | fmt_type = builtin_type (gdbarch)->builtin_declong; | |
2336 | break; | |
2337 | default: | |
2338 | gdb_assert_not_reached ("unexpected argument class"); | |
c2792f5a DE |
2339 | } |
2340 | ||
16e812b2 UW |
2341 | /* To match the traditional GDB behavior, the conversion is |
2342 | done differently depending on the type of the parameter: | |
2343 | ||
2344 | - if the parameter has floating-point type, it's value | |
2345 | is converted to the target type; | |
2346 | ||
2347 | - otherwise, if the parameter has a type that is of the | |
2348 | same size as a built-in floating-point type, the value | |
2349 | bytes are interpreted as if they were of that type, and | |
2350 | then converted to the target type (this is not done for | |
2351 | decimal floating-point argument classes); | |
2352 | ||
2353 | - otherwise, if the source value has an integer value, | |
2354 | it's value is converted to the target type; | |
c2792f5a | 2355 | |
16e812b2 | 2356 | - otherwise, an error is raised. |
c2792f5a | 2357 | |
16e812b2 UW |
2358 | In either case, the result of the conversion is a byte buffer |
2359 | formatted in the target format for the target type. */ | |
2360 | ||
2361 | if (TYPE_CODE (fmt_type) == TYPE_CODE_FLT) | |
2362 | { | |
2363 | param_type = float_type_from_length (param_type); | |
2364 | if (param_type != value_type (value)) | |
2365 | value = value_from_contents (param_type, value_contents (value)); | |
2366 | } | |
2367 | ||
2368 | value = value_cast (fmt_type, value); | |
c2792f5a | 2369 | |
3b4b2f16 | 2370 | /* Convert the value to a string and print it. */ |
f69fdf9b UW |
2371 | std::string str |
2372 | = target_float_to_string (value_contents (value), fmt_type, format); | |
3b4b2f16 | 2373 | fputs_filtered (str.c_str (), stream); |
c2792f5a DE |
2374 | } |
2375 | ||
2376 | /* Subroutine of ui_printf to simplify it. | |
2377 | Print VALUE, a target pointer, to STREAM using FORMAT. */ | |
2378 | ||
2379 | static void | |
2380 | printf_pointer (struct ui_file *stream, const char *format, | |
2381 | struct value *value) | |
2382 | { | |
2383 | /* We avoid the host's %p because pointers are too | |
2384 | likely to be the wrong size. The only interesting | |
2385 | modifier for %p is a width; extract that, and then | |
2386 | handle %p as glibc would: %#x or a literal "(nil)". */ | |
2387 | ||
2388 | const char *p; | |
2389 | char *fmt, *fmt_p; | |
2390 | #ifdef PRINTF_HAS_LONG_LONG | |
2391 | long long val = value_as_long (value); | |
2392 | #else | |
2393 | long val = value_as_long (value); | |
2394 | #endif | |
2395 | ||
224c3ddb | 2396 | fmt = (char *) alloca (strlen (format) + 5); |
c2792f5a DE |
2397 | |
2398 | /* Copy up to the leading %. */ | |
2399 | p = format; | |
2400 | fmt_p = fmt; | |
2401 | while (*p) | |
2402 | { | |
2403 | int is_percent = (*p == '%'); | |
2404 | ||
2405 | *fmt_p++ = *p++; | |
2406 | if (is_percent) | |
2407 | { | |
2408 | if (*p == '%') | |
2409 | *fmt_p++ = *p++; | |
2410 | else | |
2411 | break; | |
2412 | } | |
2413 | } | |
2414 | ||
2415 | if (val != 0) | |
2416 | *fmt_p++ = '#'; | |
2417 | ||
b8c2339b TT |
2418 | /* Copy any width or flags. Only the "-" flag is valid for pointers |
2419 | -- see the format_pieces constructor. */ | |
2420 | while (*p == '-' || (*p >= '0' && *p < '9')) | |
c2792f5a DE |
2421 | *fmt_p++ = *p++; |
2422 | ||
2423 | gdb_assert (*p == 'p' && *(p + 1) == '\0'); | |
2424 | if (val != 0) | |
2425 | { | |
2426 | #ifdef PRINTF_HAS_LONG_LONG | |
2427 | *fmt_p++ = 'l'; | |
2428 | #endif | |
2429 | *fmt_p++ = 'l'; | |
2430 | *fmt_p++ = 'x'; | |
2431 | *fmt_p++ = '\0'; | |
2432 | fprintf_filtered (stream, fmt, val); | |
2433 | } | |
2434 | else | |
2435 | { | |
2436 | *fmt_p++ = 's'; | |
2437 | *fmt_p++ = '\0'; | |
2438 | fprintf_filtered (stream, fmt, "(nil)"); | |
2439 | } | |
2440 | } | |
2441 | ||
a04b0428 JB |
2442 | /* printf "printf format string" ARG to STREAM. */ |
2443 | ||
2444 | static void | |
bbc13ae3 | 2445 | ui_printf (const char *arg, struct ui_file *stream) |
c906108c | 2446 | { |
bbc13ae3 | 2447 | const char *s = arg; |
8e481c3b | 2448 | std::vector<struct value *> val_args; |
c906108c SS |
2449 | |
2450 | if (s == 0) | |
e2e0b3e5 | 2451 | error_no_arg (_("format-control string and values to print")); |
c906108c | 2452 | |
f1735a53 | 2453 | s = skip_spaces (s); |
c906108c | 2454 | |
675dcf4f | 2455 | /* A format string should follow, enveloped in double quotes. */ |
c906108c | 2456 | if (*s++ != '"') |
8a3fe4f8 | 2457 | error (_("Bad format string, missing '\"'.")); |
c906108c | 2458 | |
8e481c3b | 2459 | format_pieces fpieces (&s); |
c906108c | 2460 | |
d3ce09f5 SS |
2461 | if (*s++ != '"') |
2462 | error (_("Bad format string, non-terminated '\"'.")); | |
2463 | ||
f1735a53 | 2464 | s = skip_spaces (s); |
c906108c SS |
2465 | |
2466 | if (*s != ',' && *s != 0) | |
8a3fe4f8 | 2467 | error (_("Invalid argument syntax")); |
c906108c | 2468 | |
c5aa993b JM |
2469 | if (*s == ',') |
2470 | s++; | |
f1735a53 | 2471 | s = skip_spaces (s); |
c906108c | 2472 | |
c906108c | 2473 | { |
c906108c | 2474 | int nargs_wanted; |
8e481c3b TT |
2475 | int i; |
2476 | const char *current_substring; | |
c906108c | 2477 | |
c906108c | 2478 | nargs_wanted = 0; |
8e481c3b TT |
2479 | for (auto &&piece : fpieces) |
2480 | if (piece.argclass != literal_piece) | |
d3ce09f5 | 2481 | ++nargs_wanted; |
c906108c SS |
2482 | |
2483 | /* Now, parse all arguments and evaluate them. | |
2484 | Store the VALUEs in VAL_ARGS. */ | |
2485 | ||
2486 | while (*s != '\0') | |
2487 | { | |
bbc13ae3 | 2488 | const char *s1; |
ad3bbd48 | 2489 | |
a04b0428 | 2490 | s1 = s; |
8e481c3b | 2491 | val_args.push_back (parse_to_comma_and_eval (&s1)); |
c5aa993b | 2492 | |
c906108c SS |
2493 | s = s1; |
2494 | if (*s == ',') | |
2495 | s++; | |
2496 | } | |
c5aa993b | 2497 | |
8e481c3b | 2498 | if (val_args.size () != nargs_wanted) |
8a3fe4f8 | 2499 | error (_("Wrong number of arguments for specified format-string")); |
c906108c SS |
2500 | |
2501 | /* Now actually print them. */ | |
d3ce09f5 | 2502 | i = 0; |
8e481c3b | 2503 | for (auto &&piece : fpieces) |
c906108c | 2504 | { |
8e481c3b TT |
2505 | current_substring = piece.string; |
2506 | switch (piece.argclass) | |
c906108c SS |
2507 | { |
2508 | case string_arg: | |
c2792f5a | 2509 | printf_c_string (stream, current_substring, val_args[i]); |
c906108c | 2510 | break; |
6c7a06a3 | 2511 | case wide_string_arg: |
c2792f5a | 2512 | printf_wide_c_string (stream, current_substring, val_args[i]); |
6c7a06a3 TT |
2513 | break; |
2514 | case wide_char_arg: | |
2515 | { | |
50810684 UW |
2516 | struct gdbarch *gdbarch |
2517 | = get_type_arch (value_type (val_args[i])); | |
2518 | struct type *wctype = lookup_typename (current_language, gdbarch, | |
e6c014f2 | 2519 | "wchar_t", NULL, 0); |
6c7a06a3 | 2520 | struct type *valtype; |
6c7a06a3 TT |
2521 | const gdb_byte *bytes; |
2522 | ||
2523 | valtype = value_type (val_args[i]); | |
2524 | if (TYPE_LENGTH (valtype) != TYPE_LENGTH (wctype) | |
2525 | || TYPE_CODE (valtype) != TYPE_CODE_INT) | |
2526 | error (_("expected wchar_t argument for %%lc")); | |
2527 | ||
2528 | bytes = value_contents (val_args[i]); | |
2529 | ||
8268c778 | 2530 | auto_obstack output; |
6c7a06a3 | 2531 | |
f870a310 | 2532 | convert_between_encodings (target_wide_charset (gdbarch), |
6c7a06a3 TT |
2533 | host_charset (), |
2534 | bytes, TYPE_LENGTH (valtype), | |
2535 | TYPE_LENGTH (valtype), | |
2536 | &output, translit_char); | |
2537 | obstack_grow_str0 (&output, ""); | |
2538 | ||
f1421989 HZ |
2539 | fprintf_filtered (stream, current_substring, |
2540 | obstack_base (&output)); | |
6c7a06a3 TT |
2541 | } |
2542 | break; | |
c906108c | 2543 | case long_long_arg: |
74a0d9f6 | 2544 | #ifdef PRINTF_HAS_LONG_LONG |
c906108c SS |
2545 | { |
2546 | long long val = value_as_long (val_args[i]); | |
ad3bbd48 | 2547 | |
f1421989 | 2548 | fprintf_filtered (stream, current_substring, val); |
c906108c SS |
2549 | break; |
2550 | } | |
2551 | #else | |
8a3fe4f8 | 2552 | error (_("long long not supported in printf")); |
c906108c SS |
2553 | #endif |
2554 | case int_arg: | |
2555 | { | |
46e9880c | 2556 | int val = value_as_long (val_args[i]); |
ad3bbd48 | 2557 | |
f1421989 | 2558 | fprintf_filtered (stream, current_substring, val); |
46e9880c DJ |
2559 | break; |
2560 | } | |
2561 | case long_arg: | |
2562 | { | |
c906108c | 2563 | long val = value_as_long (val_args[i]); |
ad3bbd48 | 2564 | |
f1421989 | 2565 | fprintf_filtered (stream, current_substring, val); |
c906108c SS |
2566 | break; |
2567 | } | |
16e812b2 UW |
2568 | /* Handles floating-point values. */ |
2569 | case double_arg: | |
2570 | case long_double_arg: | |
2571 | case dec32float_arg: | |
2572 | case dec64float_arg: | |
2573 | case dec128float_arg: | |
2574 | printf_floating (stream, current_substring, val_args[i], | |
8e481c3b | 2575 | piece.argclass); |
c2792f5a | 2576 | break; |
2025a643 | 2577 | case ptr_arg: |
c2792f5a DE |
2578 | printf_pointer (stream, current_substring, val_args[i]); |
2579 | break; | |
d3ce09f5 SS |
2580 | case literal_piece: |
2581 | /* Print a portion of the format string that has no | |
2582 | directives. Note that this will not include any | |
2583 | ordinary %-specs, but it might include "%%". That is | |
2584 | why we use printf_filtered and not puts_filtered here. | |
2585 | Also, we pass a dummy argument because some platforms | |
2586 | have modified GCC to include -Wformat-security by | |
2587 | default, which will warn here if there is no | |
2588 | argument. */ | |
2589 | fprintf_filtered (stream, current_substring, 0); | |
2590 | break; | |
675dcf4f MK |
2591 | default: |
2592 | internal_error (__FILE__, __LINE__, | |
2025a643 | 2593 | _("failed internal consistency check")); |
c906108c | 2594 | } |
d3ce09f5 | 2595 | /* Maybe advance to the next argument. */ |
8e481c3b | 2596 | if (piece.argclass != literal_piece) |
d3ce09f5 | 2597 | ++i; |
c906108c | 2598 | } |
c906108c | 2599 | } |
c906108c | 2600 | } |
c906108c | 2601 | |
f1421989 HZ |
2602 | /* Implement the "printf" command. */ |
2603 | ||
a04b0428 | 2604 | static void |
0b39b52e | 2605 | printf_command (const char *arg, int from_tty) |
f1421989 | 2606 | { |
a04b0428 | 2607 | ui_printf (arg, gdb_stdout); |
50b34a18 | 2608 | gdb_flush (gdb_stdout); |
f1421989 HZ |
2609 | } |
2610 | ||
2611 | /* Implement the "eval" command. */ | |
2612 | ||
2613 | static void | |
0b39b52e | 2614 | eval_command (const char *arg, int from_tty) |
f1421989 | 2615 | { |
d7e74731 | 2616 | string_file stb; |
f1421989 | 2617 | |
d7e74731 | 2618 | ui_printf (arg, &stb); |
f1421989 | 2619 | |
d7e74731 | 2620 | std::string expanded = insert_user_defined_cmd_args (stb.c_str ()); |
01770bbd | 2621 | |
95a6b0a1 | 2622 | execute_command (expanded.c_str (), from_tty); |
f1421989 HZ |
2623 | } |
2624 | ||
c906108c | 2625 | void |
fba45db2 | 2626 | _initialize_printcmd (void) |
c906108c | 2627 | { |
c94fdfd0 EZ |
2628 | struct cmd_list_element *c; |
2629 | ||
c906108c SS |
2630 | current_display_number = -1; |
2631 | ||
76727919 | 2632 | gdb::observers::free_objfile.attach (clear_dangling_display_expressions); |
a3247a22 | 2633 | |
11db9430 | 2634 | add_info ("address", info_address_command, |
1bedd215 | 2635 | _("Describe where symbol SYM is stored.")); |
c906108c | 2636 | |
11db9430 | 2637 | add_info ("symbol", info_symbol_command, _("\ |
1bedd215 AC |
2638 | Describe what symbol is at location ADDR.\n\ |
2639 | Only for symbols with fixed locations (global or static scope).")); | |
c906108c | 2640 | |
1bedd215 AC |
2641 | add_com ("x", class_vars, x_command, _("\ |
2642 | Examine memory: x/FMT ADDRESS.\n\ | |
c906108c SS |
2643 | ADDRESS is an expression for the memory address to examine.\n\ |
2644 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2645 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
6fbe845e AB |
2646 | t(binary), f(float), a(address), i(instruction), c(char), s(string)\n\ |
2647 | and z(hex, zero padded on the left).\n\ | |
1bedd215 | 2648 | Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ |
c906108c | 2649 | The specified number of objects of the specified size are printed\n\ |
bb556f1f TK |
2650 | according to the format. If a negative number is specified, memory is\n\ |
2651 | examined backward from the address.\n\n\ | |
c906108c SS |
2652 | Defaults for format and size letters are those previously used.\n\ |
2653 | Default count is 1. Default address is following last thing printed\n\ | |
1bedd215 | 2654 | with this command or \"print\".")); |
c906108c | 2655 | |
c906108c SS |
2656 | #if 0 |
2657 | add_com ("whereis", class_vars, whereis_command, | |
1bedd215 | 2658 | _("Print line number and file of definition of variable.")); |
c906108c | 2659 | #endif |
c5aa993b | 2660 | |
11db9430 | 2661 | add_info ("display", info_display_command, _("\ |
1bedd215 | 2662 | Expressions to display when program stops, with code numbers.")); |
c906108c | 2663 | |
1a966eab AC |
2664 | add_cmd ("undisplay", class_vars, undisplay_command, _("\ |
2665 | Cancel some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2666 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2667 | No argument means cancel all automatic-display expressions.\n\ | |
2668 | \"delete display\" has the same effect as this command.\n\ | |
1a966eab | 2669 | Do \"info display\" to see current list of code numbers."), |
c5aa993b | 2670 | &cmdlist); |
c906108c | 2671 | |
1bedd215 AC |
2672 | add_com ("display", class_vars, display_command, _("\ |
2673 | Print value of expression EXP each time the program stops.\n\ | |
c906108c SS |
2674 | /FMT may be used before EXP as in the \"print\" command.\n\ |
2675 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2676 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2677 | and examining is done as in the \"x\" command.\n\n\ | |
2678 | With no argument, display all currently requested auto-display expressions.\n\ | |
1bedd215 | 2679 | Use \"undisplay\" to cancel display requests previously made.")); |
c906108c | 2680 | |
c9174737 | 2681 | add_cmd ("display", class_vars, enable_display_command, _("\ |
1a966eab | 2682 | Enable some expressions to be displayed when program stops.\n\ |
c906108c SS |
2683 | Arguments are the code numbers of the expressions to resume displaying.\n\ |
2684 | No argument means enable all automatic-display expressions.\n\ | |
1a966eab | 2685 | Do \"info display\" to see current list of code numbers."), &enablelist); |
c906108c | 2686 | |
1a966eab AC |
2687 | add_cmd ("display", class_vars, disable_display_command, _("\ |
2688 | Disable some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2689 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2690 | No argument means disable all automatic-display expressions.\n\ | |
1a966eab | 2691 | Do \"info display\" to see current list of code numbers."), &disablelist); |
c906108c | 2692 | |
1a966eab AC |
2693 | add_cmd ("display", class_vars, undisplay_command, _("\ |
2694 | Cancel some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2695 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2696 | No argument means cancel all automatic-display expressions.\n\ | |
1a966eab | 2697 | Do \"info display\" to see current list of code numbers."), &deletelist); |
c906108c | 2698 | |
1bedd215 | 2699 | add_com ("printf", class_vars, printf_command, _("\ |
80ae639d TT |
2700 | Formatted printing, like the C \"printf\" function.\n\ |
2701 | Usage: printf \"format string\", arg1, arg2, arg3, ..., argn\n\ | |
2702 | This supports most C printf format specifications, like %s, %d, etc.")); | |
c906108c | 2703 | |
1bedd215 AC |
2704 | add_com ("output", class_vars, output_command, _("\ |
2705 | Like \"print\" but don't put in value history and don't print newline.\n\ | |
2706 | This is useful in user-defined commands.")); | |
c906108c | 2707 | |
1bedd215 AC |
2708 | add_prefix_cmd ("set", class_vars, set_command, _("\ |
2709 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2710 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2711 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2712 | with $), a register (a few standard names starting with $), or an actual\n\ | |
1bedd215 AC |
2713 | variable in the program being debugged. EXP is any valid expression.\n\ |
2714 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
2715 | \n\ | |
2716 | With a subcommand, this command modifies parts of the gdb environment.\n\ | |
2717 | You can see these environment settings with the \"show\" command."), | |
c5aa993b | 2718 | &setlist, "set ", 1, &cmdlist); |
c906108c | 2719 | if (dbx_commands) |
0b39b52e | 2720 | add_com ("assign", class_vars, set_command, _("\ |
1bedd215 | 2721 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ |
c906108c SS |
2722 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2723 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2724 | with $), a register (a few standard names starting with $), or an actual\n\ | |
1bedd215 AC |
2725 | variable in the program being debugged. EXP is any valid expression.\n\ |
2726 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
c906108c | 2727 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
1bedd215 | 2728 | You can see these environment settings with the \"show\" command.")); |
c906108c | 2729 | |
0df8b418 | 2730 | /* "call" is the same as "set", but handy for dbx users to call fns. */ |
1bedd215 AC |
2731 | c = add_com ("call", class_vars, call_command, _("\ |
2732 | Call a function in the program.\n\ | |
c906108c SS |
2733 | The argument is the function name and arguments, in the notation of the\n\ |
2734 | current working language. The result is printed and saved in the value\n\ | |
1bedd215 | 2735 | history, if it is not void.")); |
65d12d83 | 2736 | set_cmd_completer (c, expression_completer); |
c906108c | 2737 | |
1a966eab AC |
2738 | add_cmd ("variable", class_vars, set_command, _("\ |
2739 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2740 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2741 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2742 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2743 | variable in the program being debugged. EXP is any valid expression.\n\ | |
1a966eab | 2744 | This may usually be abbreviated to simply \"set\"."), |
c5aa993b | 2745 | &setlist); |
3fcded8f | 2746 | add_alias_cmd ("var", "variable", class_vars, 0, &setlist); |
c906108c | 2747 | |
1bedd215 AC |
2748 | c = add_com ("print", class_vars, print_command, _("\ |
2749 | Print value of expression EXP.\n\ | |
c906108c SS |
2750 | Variables accessible are those of the lexical environment of the selected\n\ |
2751 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2752 | \n\ | |
2753 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2754 | $$NUM refers to NUM'th value back from the last one.\n\ | |
1bedd215 AC |
2755 | Names starting with $ refer to registers (with the values they would have\n\ |
2756 | if the program were to return to the stack frame now selected, restoring\n\ | |
c906108c SS |
2757 | all registers saved by frames farther in) or else to debugger\n\ |
2758 | \"convenience\" variables (any such name not a known register).\n\ | |
1bedd215 AC |
2759 | Use assignment expressions to give values to convenience variables.\n\ |
2760 | \n\ | |
c906108c SS |
2761 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ |
2762 | @ is a binary operator for treating consecutive data objects\n\ | |
2763 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2764 | element is FOO, whose second element is stored in the space following\n\ | |
2765 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
1bedd215 AC |
2766 | resides in memory.\n\ |
2767 | \n\ | |
c906108c | 2768 | EXP may be preceded with /FMT, where FMT is a format letter\n\ |
1bedd215 | 2769 | but no count or size letter (see \"x\" command).")); |
65d12d83 | 2770 | set_cmd_completer (c, expression_completer); |
c906108c | 2771 | add_com_alias ("p", "print", class_vars, 1); |
e93a8774 | 2772 | add_com_alias ("inspect", "print", class_vars, 1); |
c906108c | 2773 | |
35096d9d AC |
2774 | add_setshow_uinteger_cmd ("max-symbolic-offset", no_class, |
2775 | &max_symbolic_offset, _("\ | |
2776 | Set the largest offset that will be printed in <symbol+1234> form."), _("\ | |
f81d1120 PA |
2777 | Show the largest offset that will be printed in <symbol+1234> form."), _("\ |
2778 | Tell GDB to only display the symbolic form of an address if the\n\ | |
2779 | offset between the closest earlier symbol and the address is less than\n\ | |
2780 | the specified maximum offset. The default is \"unlimited\", which tells GDB\n\ | |
2781 | to always print the symbolic form of an address if any symbol precedes\n\ | |
2782 | it. Zero is equivalent to \"unlimited\"."), | |
35096d9d | 2783 | NULL, |
920d2a44 | 2784 | show_max_symbolic_offset, |
35096d9d | 2785 | &setprintlist, &showprintlist); |
5bf193a2 AC |
2786 | add_setshow_boolean_cmd ("symbol-filename", no_class, |
2787 | &print_symbol_filename, _("\ | |
2788 | Set printing of source filename and line number with <symbol>."), _("\ | |
2789 | Show printing of source filename and line number with <symbol>."), NULL, | |
2790 | NULL, | |
920d2a44 | 2791 | show_print_symbol_filename, |
5bf193a2 | 2792 | &setprintlist, &showprintlist); |
f1421989 HZ |
2793 | |
2794 | add_com ("eval", no_class, eval_command, _("\ | |
2795 | Convert \"printf format string\", arg1, arg2, arg3, ..., argn to\n\ | |
2796 | a command line, and call it.")); | |
c906108c | 2797 | } |