Commit | Line | Data |
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c906108c | 1 | /* Print values for GNU debugger GDB. |
e2ad119d | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
0fb0cc75 | 5 | 2008, 2009 Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include "gdb_string.h" | |
24 | #include "frame.h" | |
25 | #include "symtab.h" | |
26 | #include "gdbtypes.h" | |
27 | #include "value.h" | |
28 | #include "language.h" | |
29 | #include "expression.h" | |
30 | #include "gdbcore.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "target.h" | |
33 | #include "breakpoint.h" | |
34 | #include "demangle.h" | |
35 | #include "valprint.h" | |
36 | #include "annotate.h" | |
c5aa993b JM |
37 | #include "symfile.h" /* for overlay functions */ |
38 | #include "objfiles.h" /* ditto */ | |
c94fdfd0 | 39 | #include "completer.h" /* for completion functions */ |
8b93c638 | 40 | #include "ui-out.h" |
261397f8 | 41 | #include "gdb_assert.h" |
fe898f56 | 42 | #include "block.h" |
92bf2b80 | 43 | #include "disasm.h" |
1a619819 | 44 | #include "dfp.h" |
79a45b7d | 45 | #include "valprint.h" |
a3247a22 PP |
46 | #include "exceptions.h" |
47 | #include "observer.h" | |
48 | #include "solist.h" | |
49 | #include "solib.h" | |
50 | #include "parser-defs.h" | |
c906108c | 51 | |
6a83354a AC |
52 | #ifdef TUI |
53 | #include "tui/tui.h" /* For tui_active et.al. */ | |
54 | #endif | |
55 | ||
06be140c | 56 | #if defined(__MINGW32__) && !defined(PRINTF_HAS_LONG_LONG) |
09d71d23 AS |
57 | # define USE_PRINTF_I64 1 |
58 | # define PRINTF_HAS_LONG_LONG | |
59 | #else | |
60 | # define USE_PRINTF_I64 0 | |
61 | #endif | |
62 | ||
c906108c | 63 | extern int asm_demangle; /* Whether to demangle syms in asm printouts */ |
c906108c SS |
64 | |
65 | struct format_data | |
c5aa993b JM |
66 | { |
67 | int count; | |
68 | char format; | |
69 | char size; | |
70 | }; | |
c906108c SS |
71 | |
72 | /* Last specified output format. */ | |
73 | ||
74 | static char last_format = 'x'; | |
75 | ||
76 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
77 | ||
78 | static char last_size = 'w'; | |
79 | ||
80 | /* Default address to examine next. */ | |
81 | ||
82 | static CORE_ADDR next_address; | |
83 | ||
a4642986 MR |
84 | /* Number of delay instructions following current disassembled insn. */ |
85 | ||
86 | static int branch_delay_insns; | |
87 | ||
c906108c SS |
88 | /* Last address examined. */ |
89 | ||
90 | static CORE_ADDR last_examine_address; | |
91 | ||
92 | /* Contents of last address examined. | |
93 | This is not valid past the end of the `x' command! */ | |
94 | ||
3d6d86c6 | 95 | static struct value *last_examine_value; |
c906108c SS |
96 | |
97 | /* Largest offset between a symbolic value and an address, that will be | |
98 | printed as `0x1234 <symbol+offset>'. */ | |
99 | ||
100 | static unsigned int max_symbolic_offset = UINT_MAX; | |
920d2a44 AC |
101 | static void |
102 | show_max_symbolic_offset (struct ui_file *file, int from_tty, | |
103 | struct cmd_list_element *c, const char *value) | |
104 | { | |
105 | fprintf_filtered (file, _("\ | |
106 | The largest offset that will be printed in <symbol+1234> form is %s.\n"), | |
107 | value); | |
108 | } | |
c906108c SS |
109 | |
110 | /* Append the source filename and linenumber of the symbol when | |
111 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
112 | static int print_symbol_filename = 0; | |
920d2a44 AC |
113 | static void |
114 | show_print_symbol_filename (struct ui_file *file, int from_tty, | |
115 | struct cmd_list_element *c, const char *value) | |
116 | { | |
117 | fprintf_filtered (file, _("\ | |
118 | Printing of source filename and line number with <symbol> is %s.\n"), | |
119 | value); | |
120 | } | |
c906108c SS |
121 | |
122 | /* Number of auto-display expression currently being displayed. | |
123 | So that we can disable it if we get an error or a signal within it. | |
124 | -1 when not doing one. */ | |
125 | ||
126 | int current_display_number; | |
127 | ||
c906108c | 128 | struct display |
c5aa993b JM |
129 | { |
130 | /* Chain link to next auto-display item. */ | |
131 | struct display *next; | |
fa8a61dc TT |
132 | /* The expression as the user typed it. */ |
133 | char *exp_string; | |
c5aa993b JM |
134 | /* Expression to be evaluated and displayed. */ |
135 | struct expression *exp; | |
136 | /* Item number of this auto-display item. */ | |
137 | int number; | |
138 | /* Display format specified. */ | |
139 | struct format_data format; | |
140 | /* Innermost block required by this expression when evaluated */ | |
141 | struct block *block; | |
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 | ||
153 | /* Prototypes for exported functions. */ | |
154 | ||
a14ed312 | 155 | void output_command (char *, int); |
c906108c | 156 | |
a14ed312 | 157 | void _initialize_printcmd (void); |
c906108c SS |
158 | |
159 | /* Prototypes for local functions. */ | |
160 | ||
a14ed312 | 161 | static void do_one_display (struct display *); |
c906108c | 162 | \f |
c5aa993b | 163 | |
c906108c SS |
164 | /* Decode a format specification. *STRING_PTR should point to it. |
165 | OFORMAT and OSIZE are used as defaults for the format and size | |
166 | if none are given in the format specification. | |
167 | If OSIZE is zero, then the size field of the returned value | |
168 | should be set only if a size is explicitly specified by the | |
169 | user. | |
170 | The structure returned describes all the data | |
171 | found in the specification. In addition, *STRING_PTR is advanced | |
172 | past the specification and past all whitespace following it. */ | |
173 | ||
174 | static struct format_data | |
fba45db2 | 175 | decode_format (char **string_ptr, int oformat, int osize) |
c906108c SS |
176 | { |
177 | struct format_data val; | |
52f0bd74 | 178 | char *p = *string_ptr; |
c906108c SS |
179 | |
180 | val.format = '?'; | |
181 | val.size = '?'; | |
182 | val.count = 1; | |
183 | ||
184 | if (*p >= '0' && *p <= '9') | |
185 | val.count = atoi (p); | |
c5aa993b JM |
186 | while (*p >= '0' && *p <= '9') |
187 | p++; | |
c906108c SS |
188 | |
189 | /* Now process size or format letters that follow. */ | |
190 | ||
191 | while (1) | |
192 | { | |
193 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
194 | val.size = *p++; | |
195 | else if (*p >= 'a' && *p <= 'z') | |
196 | val.format = *p++; | |
197 | else | |
198 | break; | |
199 | } | |
200 | ||
c5aa993b JM |
201 | while (*p == ' ' || *p == '\t') |
202 | p++; | |
c906108c SS |
203 | *string_ptr = p; |
204 | ||
205 | /* Set defaults for format and size if not specified. */ | |
206 | if (val.format == '?') | |
207 | { | |
208 | if (val.size == '?') | |
209 | { | |
210 | /* Neither has been specified. */ | |
211 | val.format = oformat; | |
212 | val.size = osize; | |
213 | } | |
214 | else | |
215 | /* If a size is specified, any format makes a reasonable | |
216 | default except 'i'. */ | |
217 | val.format = oformat == 'i' ? 'x' : oformat; | |
218 | } | |
219 | else if (val.size == '?') | |
220 | switch (val.format) | |
221 | { | |
222 | case 'a': | |
223 | case 's': | |
224 | /* Pick the appropriate size for an address. */ | |
819844ad | 225 | if (gdbarch_ptr_bit (current_gdbarch) == 64) |
c906108c | 226 | val.size = osize ? 'g' : osize; |
819844ad | 227 | else if (gdbarch_ptr_bit (current_gdbarch) == 32) |
c906108c | 228 | val.size = osize ? 'w' : osize; |
819844ad | 229 | else if (gdbarch_ptr_bit (current_gdbarch) == 16) |
c906108c SS |
230 | val.size = osize ? 'h' : osize; |
231 | else | |
819844ad | 232 | /* Bad value for gdbarch_ptr_bit. */ |
675dcf4f MK |
233 | internal_error (__FILE__, __LINE__, |
234 | _("failed internal consistency check")); | |
c906108c SS |
235 | break; |
236 | case 'f': | |
237 | /* Floating point has to be word or giantword. */ | |
238 | if (osize == 'w' || osize == 'g') | |
239 | val.size = osize; | |
240 | else | |
241 | /* Default it to giantword if the last used size is not | |
242 | appropriate. */ | |
243 | val.size = osize ? 'g' : osize; | |
244 | break; | |
245 | case 'c': | |
246 | /* Characters default to one byte. */ | |
247 | val.size = osize ? 'b' : osize; | |
248 | break; | |
249 | default: | |
250 | /* The default is the size most recently specified. */ | |
251 | val.size = osize; | |
252 | } | |
253 | ||
254 | return val; | |
255 | } | |
256 | \f | |
79a45b7d | 257 | /* Print value VAL on stream according to OPTIONS. |
c906108c | 258 | Do not end with a newline. |
c906108c | 259 | SIZE is the letter for the size of datum being printed. |
ea37ba09 DJ |
260 | This is used to pad hex numbers so they line up. SIZE is 0 |
261 | for print / output and set for examine. */ | |
c906108c SS |
262 | |
263 | static void | |
79a45b7d TT |
264 | print_formatted (struct value *val, int size, |
265 | const struct value_print_options *options, | |
fba45db2 | 266 | struct ui_file *stream) |
c906108c | 267 | { |
df407dfe | 268 | struct type *type = check_typedef (value_type (val)); |
c906108c SS |
269 | int len = TYPE_LENGTH (type); |
270 | ||
271 | if (VALUE_LVAL (val) == lval_memory) | |
675dcf4f | 272 | next_address = VALUE_ADDRESS (val) + len; |
c906108c | 273 | |
ea37ba09 | 274 | if (size) |
c906108c | 275 | { |
79a45b7d | 276 | switch (options->format) |
ea37ba09 DJ |
277 | { |
278 | case 's': | |
279 | /* FIXME: Need to handle wchar_t's here... */ | |
280 | next_address = VALUE_ADDRESS (val) | |
79a45b7d TT |
281 | + val_print_string (VALUE_ADDRESS (val), -1, 1, stream, |
282 | options); | |
ea37ba09 | 283 | return; |
c906108c | 284 | |
ea37ba09 DJ |
285 | case 'i': |
286 | /* We often wrap here if there are long symbolic names. */ | |
287 | wrap_here (" "); | |
288 | next_address = (VALUE_ADDRESS (val) | |
289 | + gdb_print_insn (VALUE_ADDRESS (val), stream, | |
290 | &branch_delay_insns)); | |
291 | return; | |
292 | } | |
c906108c | 293 | } |
ea37ba09 | 294 | |
79a45b7d | 295 | if (options->format == 0 || options->format == 's' |
4e885b20 | 296 | || TYPE_CODE (type) == TYPE_CODE_REF |
ea37ba09 DJ |
297 | || TYPE_CODE (type) == TYPE_CODE_ARRAY |
298 | || TYPE_CODE (type) == TYPE_CODE_STRING | |
299 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
300 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
301 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
79a45b7d | 302 | value_print (val, stream, options); |
ea37ba09 DJ |
303 | else |
304 | /* User specified format, so don't look to the the type to | |
305 | tell us what to do. */ | |
306 | print_scalar_formatted (value_contents (val), type, | |
79a45b7d | 307 | options, size, stream); |
c906108c SS |
308 | } |
309 | ||
b806fb9a UW |
310 | /* Return builtin floating point type of same length as TYPE. |
311 | If no such type is found, return TYPE itself. */ | |
312 | static struct type * | |
313 | float_type_from_length (struct gdbarch *gdbarch, struct type *type) | |
314 | { | |
315 | const struct builtin_type *builtin = builtin_type (gdbarch); | |
316 | unsigned int len = TYPE_LENGTH (type); | |
317 | ||
318 | if (len == TYPE_LENGTH (builtin->builtin_float)) | |
319 | type = builtin->builtin_float; | |
320 | else if (len == TYPE_LENGTH (builtin->builtin_double)) | |
321 | type = builtin->builtin_double; | |
322 | else if (len == TYPE_LENGTH (builtin->builtin_long_double)) | |
323 | type = builtin->builtin_long_double; | |
324 | ||
325 | return type; | |
326 | } | |
327 | ||
c906108c | 328 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, |
79a45b7d TT |
329 | according to OPTIONS and SIZE on STREAM. |
330 | Formats s and i are not supported at this level. | |
c906108c SS |
331 | |
332 | This is how the elements of an array or structure are printed | |
333 | with a format. */ | |
334 | ||
335 | void | |
366b1cbf | 336 | print_scalar_formatted (const void *valaddr, struct type *type, |
79a45b7d TT |
337 | const struct value_print_options *options, |
338 | int size, struct ui_file *stream) | |
c906108c | 339 | { |
81cb7cc9 | 340 | LONGEST val_long = 0; |
c906108c | 341 | unsigned int len = TYPE_LENGTH (type); |
d44e8473 | 342 | enum bfd_endian byte_order = gdbarch_byte_order (current_gdbarch); |
c906108c | 343 | |
ea37ba09 DJ |
344 | /* If we get here with a string format, try again without it. Go |
345 | all the way back to the language printers, which may call us | |
346 | again. */ | |
79a45b7d | 347 | if (options->format == 's') |
ea37ba09 | 348 | { |
79a45b7d TT |
349 | struct value_print_options opts = *options; |
350 | opts.format = 0; | |
351 | opts.deref_ref = 0; | |
352 | val_print (type, valaddr, 0, 0, stream, 0, &opts, | |
d8ca156b | 353 | current_language); |
ea37ba09 DJ |
354 | return; |
355 | } | |
356 | ||
6b9acc27 JJ |
357 | if (len > sizeof(LONGEST) && |
358 | (TYPE_CODE (type) == TYPE_CODE_INT | |
359 | || TYPE_CODE (type) == TYPE_CODE_ENUM)) | |
360 | { | |
79a45b7d | 361 | switch (options->format) |
6b9acc27 JJ |
362 | { |
363 | case 'o': | |
d44e8473 | 364 | print_octal_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
365 | return; |
366 | case 'u': | |
367 | case 'd': | |
d44e8473 | 368 | print_decimal_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
369 | return; |
370 | case 't': | |
d44e8473 | 371 | print_binary_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
372 | return; |
373 | case 'x': | |
d44e8473 | 374 | print_hex_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
375 | return; |
376 | case 'c': | |
d44e8473 | 377 | print_char_chars (stream, valaddr, len, byte_order); |
6b9acc27 JJ |
378 | return; |
379 | default: | |
380 | break; | |
381 | }; | |
382 | } | |
383 | ||
79a45b7d | 384 | if (options->format != 'f') |
c906108c SS |
385 | val_long = unpack_long (type, valaddr); |
386 | ||
ef166cf4 | 387 | /* If the value is a pointer, and pointers and addresses are not the |
d0aee0c4 | 388 | same, then at this point, the value's length (in target bytes) is |
17a912b6 | 389 | gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */ |
ef166cf4 | 390 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
17a912b6 | 391 | len = gdbarch_addr_bit (current_gdbarch) / TARGET_CHAR_BIT; |
ef166cf4 | 392 | |
c906108c SS |
393 | /* If we are printing it as unsigned, truncate it in case it is actually |
394 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
395 | (if shorts are 16 bits) instead of 4294967295). */ | |
79a45b7d | 396 | if (options->format != 'd') |
c906108c SS |
397 | { |
398 | if (len < sizeof (LONGEST)) | |
399 | val_long &= ((LONGEST) 1 << HOST_CHAR_BIT * len) - 1; | |
400 | } | |
401 | ||
79a45b7d | 402 | switch (options->format) |
c906108c SS |
403 | { |
404 | case 'x': | |
405 | if (!size) | |
406 | { | |
675dcf4f | 407 | /* No size specified, like in print. Print varying # of digits. */ |
c906108c SS |
408 | print_longest (stream, 'x', 1, val_long); |
409 | } | |
410 | else | |
411 | switch (size) | |
412 | { | |
413 | case 'b': | |
414 | case 'h': | |
415 | case 'w': | |
416 | case 'g': | |
417 | print_longest (stream, size, 1, val_long); | |
418 | break; | |
419 | default: | |
8a3fe4f8 | 420 | error (_("Undefined output size \"%c\"."), size); |
c906108c SS |
421 | } |
422 | break; | |
423 | ||
424 | case 'd': | |
425 | print_longest (stream, 'd', 1, val_long); | |
426 | break; | |
427 | ||
428 | case 'u': | |
429 | print_longest (stream, 'u', 0, val_long); | |
430 | break; | |
431 | ||
432 | case 'o': | |
433 | if (val_long) | |
434 | print_longest (stream, 'o', 1, val_long); | |
435 | else | |
436 | fprintf_filtered (stream, "0"); | |
437 | break; | |
438 | ||
439 | case 'a': | |
593de6a6 | 440 | { |
593de6a6 | 441 | CORE_ADDR addr = unpack_pointer (type, valaddr); |
593de6a6 PS |
442 | print_address (addr, stream); |
443 | } | |
c906108c SS |
444 | break; |
445 | ||
446 | case 'c': | |
79a45b7d TT |
447 | { |
448 | struct value_print_options opts = *options; | |
449 | opts.format = 0; | |
450 | if (TYPE_UNSIGNED (type)) | |
451 | value_print (value_from_longest (builtin_type_true_unsigned_char, | |
452 | val_long), | |
453 | stream, &opts); | |
454 | else | |
455 | value_print (value_from_longest (builtin_type_true_char, val_long), | |
456 | stream, &opts); | |
457 | } | |
c906108c SS |
458 | break; |
459 | ||
460 | case 'f': | |
b806fb9a | 461 | type = float_type_from_length (current_gdbarch, type); |
c906108c SS |
462 | print_floating (valaddr, type, stream); |
463 | break; | |
464 | ||
465 | case 0: | |
675dcf4f MK |
466 | internal_error (__FILE__, __LINE__, |
467 | _("failed internal consistency check")); | |
c906108c SS |
468 | |
469 | case 't': | |
470 | /* Binary; 't' stands for "two". */ | |
471 | { | |
c5aa993b JM |
472 | char bits[8 * (sizeof val_long) + 1]; |
473 | char buf[8 * (sizeof val_long) + 32]; | |
c906108c SS |
474 | char *cp = bits; |
475 | int width; | |
476 | ||
c5aa993b JM |
477 | if (!size) |
478 | width = 8 * (sizeof val_long); | |
479 | else | |
480 | switch (size) | |
c906108c SS |
481 | { |
482 | case 'b': | |
483 | width = 8; | |
484 | break; | |
485 | case 'h': | |
486 | width = 16; | |
487 | break; | |
488 | case 'w': | |
489 | width = 32; | |
490 | break; | |
491 | case 'g': | |
492 | width = 64; | |
493 | break; | |
494 | default: | |
8a3fe4f8 | 495 | error (_("Undefined output size \"%c\"."), size); |
c906108c SS |
496 | } |
497 | ||
c5aa993b JM |
498 | bits[width] = '\0'; |
499 | while (width-- > 0) | |
500 | { | |
501 | bits[width] = (val_long & 1) ? '1' : '0'; | |
502 | val_long >>= 1; | |
503 | } | |
c906108c SS |
504 | if (!size) |
505 | { | |
506 | while (*cp && *cp == '0') | |
507 | cp++; | |
508 | if (*cp == '\0') | |
509 | cp--; | |
510 | } | |
bb599908 | 511 | strcpy (buf, cp); |
306d9ac5 | 512 | fputs_filtered (buf, stream); |
c906108c SS |
513 | } |
514 | break; | |
515 | ||
516 | default: | |
79a45b7d | 517 | error (_("Undefined output format \"%c\"."), options->format); |
c906108c SS |
518 | } |
519 | } | |
520 | ||
521 | /* Specify default address for `x' command. | |
675dcf4f | 522 | The `info lines' command uses this. */ |
c906108c SS |
523 | |
524 | void | |
8b9b9e1a | 525 | set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr) |
c906108c | 526 | { |
8b9b9e1a UW |
527 | struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
528 | ||
c906108c SS |
529 | next_address = addr; |
530 | ||
531 | /* Make address available to the user as $_. */ | |
532 | set_internalvar (lookup_internalvar ("_"), | |
8b9b9e1a | 533 | value_from_pointer (ptr_type, addr)); |
c906108c SS |
534 | } |
535 | ||
536 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
537 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
538 | Optionally also print source file and line number, if available. | |
539 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
540 | or to interpret it as a possible C++ name and convert it back to source | |
541 | form. However note that DO_DEMANGLE can be overridden by the specific | |
542 | settings of the demangle and asm_demangle variables. */ | |
543 | ||
544 | void | |
675dcf4f MK |
545 | print_address_symbolic (CORE_ADDR addr, struct ui_file *stream, |
546 | int do_demangle, char *leadin) | |
dfcd3bfb JM |
547 | { |
548 | char *name = NULL; | |
549 | char *filename = NULL; | |
550 | int unmapped = 0; | |
551 | int offset = 0; | |
552 | int line = 0; | |
553 | ||
675dcf4f | 554 | /* Throw away both name and filename. */ |
2f9429ae AC |
555 | struct cleanup *cleanup_chain = make_cleanup (free_current_contents, &name); |
556 | make_cleanup (free_current_contents, &filename); | |
dfcd3bfb | 557 | |
675dcf4f MK |
558 | if (build_address_symbolic (addr, do_demangle, &name, &offset, |
559 | &filename, &line, &unmapped)) | |
2f9429ae AC |
560 | { |
561 | do_cleanups (cleanup_chain); | |
562 | return; | |
563 | } | |
dfcd3bfb JM |
564 | |
565 | fputs_filtered (leadin, stream); | |
566 | if (unmapped) | |
567 | fputs_filtered ("<*", stream); | |
568 | else | |
569 | fputs_filtered ("<", stream); | |
570 | fputs_filtered (name, stream); | |
571 | if (offset != 0) | |
572 | fprintf_filtered (stream, "+%u", (unsigned int) offset); | |
573 | ||
574 | /* Append source filename and line number if desired. Give specific | |
575 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
576 | if (print_symbol_filename && filename != NULL) | |
577 | { | |
578 | if (line != -1) | |
579 | fprintf_filtered (stream, " at %s:%d", filename, line); | |
580 | else | |
581 | fprintf_filtered (stream, " in %s", filename); | |
582 | } | |
583 | if (unmapped) | |
584 | fputs_filtered ("*>", stream); | |
585 | else | |
586 | fputs_filtered (">", stream); | |
587 | ||
588 | do_cleanups (cleanup_chain); | |
589 | } | |
590 | ||
591 | /* Given an address ADDR return all the elements needed to print the | |
592 | address in a symbolic form. NAME can be mangled or not depending | |
593 | on DO_DEMANGLE (and also on the asm_demangle global variable, | |
594 | manipulated via ''set print asm-demangle''). Return 0 in case of | |
595 | success, when all the info in the OUT paramters is valid. Return 1 | |
596 | otherwise. */ | |
597 | int | |
598 | build_address_symbolic (CORE_ADDR addr, /* IN */ | |
599 | int do_demangle, /* IN */ | |
600 | char **name, /* OUT */ | |
601 | int *offset, /* OUT */ | |
602 | char **filename, /* OUT */ | |
603 | int *line, /* OUT */ | |
604 | int *unmapped) /* OUT */ | |
c906108c SS |
605 | { |
606 | struct minimal_symbol *msymbol; | |
607 | struct symbol *symbol; | |
c906108c | 608 | CORE_ADDR name_location = 0; |
714835d5 | 609 | struct obj_section *section = NULL; |
dfcd3bfb JM |
610 | char *name_temp = ""; |
611 | ||
89c83b10 | 612 | /* Let's say it is mapped (not unmapped). */ |
dfcd3bfb | 613 | *unmapped = 0; |
c906108c | 614 | |
dfcd3bfb | 615 | /* Determine if the address is in an overlay, and whether it is |
675dcf4f | 616 | mapped. */ |
c906108c SS |
617 | if (overlay_debugging) |
618 | { | |
619 | section = find_pc_overlay (addr); | |
620 | if (pc_in_unmapped_range (addr, section)) | |
621 | { | |
dfcd3bfb | 622 | *unmapped = 1; |
c906108c SS |
623 | addr = overlay_mapped_address (addr, section); |
624 | } | |
625 | } | |
626 | ||
c906108c SS |
627 | /* First try to find the address in the symbol table, then |
628 | in the minsyms. Take the closest one. */ | |
629 | ||
630 | /* This is defective in the sense that it only finds text symbols. So | |
631 | really this is kind of pointless--we should make sure that the | |
632 | minimal symbols have everything we need (by changing that we could | |
633 | save some memory, but for many debug format--ELF/DWARF or | |
634 | anything/stabs--it would be inconvenient to eliminate those minimal | |
635 | symbols anyway). */ | |
636 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section); | |
637 | symbol = find_pc_sect_function (addr, section); | |
638 | ||
639 | if (symbol) | |
640 | { | |
641 | name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol)); | |
406fc7fb | 642 | if (do_demangle || asm_demangle) |
de5ad195 | 643 | name_temp = SYMBOL_PRINT_NAME (symbol); |
c906108c | 644 | else |
3567439c | 645 | name_temp = SYMBOL_LINKAGE_NAME (symbol); |
c906108c SS |
646 | } |
647 | ||
648 | if (msymbol != NULL) | |
649 | { | |
650 | if (SYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL) | |
651 | { | |
652 | /* The msymbol is closer to the address than the symbol; | |
653 | use the msymbol instead. */ | |
654 | symbol = 0; | |
c906108c | 655 | name_location = SYMBOL_VALUE_ADDRESS (msymbol); |
406fc7fb | 656 | if (do_demangle || asm_demangle) |
de5ad195 | 657 | name_temp = SYMBOL_PRINT_NAME (msymbol); |
c906108c | 658 | else |
3567439c | 659 | name_temp = SYMBOL_LINKAGE_NAME (msymbol); |
c906108c SS |
660 | } |
661 | } | |
662 | if (symbol == NULL && msymbol == NULL) | |
dfcd3bfb | 663 | return 1; |
c906108c | 664 | |
c906108c SS |
665 | /* If the nearest symbol is too far away, don't print anything symbolic. */ |
666 | ||
667 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
668 | CORE_ADDR. But when we detect unsigned wraparound in the | |
669 | CORE_ADDR math, we ignore this test and print the offset, | |
670 | because addr+max_symbolic_offset has wrapped through the end | |
671 | of the address space back to the beginning, giving bogus comparison. */ | |
672 | if (addr > name_location + max_symbolic_offset | |
673 | && name_location + max_symbolic_offset > name_location) | |
dfcd3bfb | 674 | return 1; |
c906108c | 675 | |
dfcd3bfb JM |
676 | *offset = addr - name_location; |
677 | ||
678 | *name = xstrdup (name_temp); | |
c906108c | 679 | |
c906108c SS |
680 | if (print_symbol_filename) |
681 | { | |
682 | struct symtab_and_line sal; | |
683 | ||
684 | sal = find_pc_sect_line (addr, section, 0); | |
685 | ||
686 | if (sal.symtab) | |
dfcd3bfb JM |
687 | { |
688 | *filename = xstrdup (sal.symtab->filename); | |
689 | *line = sal.line; | |
690 | } | |
c906108c | 691 | } |
dfcd3bfb | 692 | return 0; |
c906108c SS |
693 | } |
694 | ||
c906108c SS |
695 | |
696 | /* Print address ADDR symbolically on STREAM. | |
697 | First print it as a number. Then perhaps print | |
698 | <SYMBOL + OFFSET> after the number. */ | |
699 | ||
700 | void | |
fba45db2 | 701 | print_address (CORE_ADDR addr, struct ui_file *stream) |
c906108c | 702 | { |
ed49a04f | 703 | fputs_filtered (paddress (addr), stream); |
c906108c SS |
704 | print_address_symbolic (addr, stream, asm_demangle, " "); |
705 | } | |
706 | ||
707 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE | |
708 | controls whether to print the symbolic name "raw" or demangled. | |
709 | Global setting "addressprint" controls whether to print hex address | |
710 | or not. */ | |
711 | ||
712 | void | |
675dcf4f MK |
713 | print_address_demangle (CORE_ADDR addr, struct ui_file *stream, |
714 | int do_demangle) | |
c906108c | 715 | { |
79a45b7d TT |
716 | struct value_print_options opts; |
717 | get_user_print_options (&opts); | |
c906108c SS |
718 | if (addr == 0) |
719 | { | |
720 | fprintf_filtered (stream, "0"); | |
721 | } | |
79a45b7d | 722 | else if (opts.addressprint) |
c906108c | 723 | { |
ed49a04f | 724 | fputs_filtered (paddress (addr), stream); |
c906108c SS |
725 | print_address_symbolic (addr, stream, do_demangle, " "); |
726 | } | |
727 | else | |
728 | { | |
729 | print_address_symbolic (addr, stream, do_demangle, ""); | |
730 | } | |
731 | } | |
732 | \f | |
733 | ||
734 | /* These are the types that $__ will get after an examine command of one | |
735 | of these sizes. */ | |
736 | ||
737 | static struct type *examine_i_type; | |
738 | ||
739 | static struct type *examine_b_type; | |
740 | static struct type *examine_h_type; | |
741 | static struct type *examine_w_type; | |
742 | static struct type *examine_g_type; | |
743 | ||
744 | /* Examine data at address ADDR in format FMT. | |
745 | Fetch it from memory and print on gdb_stdout. */ | |
746 | ||
747 | static void | |
00a4c844 | 748 | do_examine (struct format_data fmt, CORE_ADDR addr) |
c906108c | 749 | { |
52f0bd74 AC |
750 | char format = 0; |
751 | char size; | |
752 | int count = 1; | |
c906108c | 753 | struct type *val_type = NULL; |
52f0bd74 AC |
754 | int i; |
755 | int maxelts; | |
79a45b7d | 756 | struct value_print_options opts; |
c906108c SS |
757 | |
758 | format = fmt.format; | |
759 | size = fmt.size; | |
760 | count = fmt.count; | |
761 | next_address = addr; | |
c906108c SS |
762 | |
763 | /* String or instruction format implies fetch single bytes | |
764 | regardless of the specified size. */ | |
765 | if (format == 's' || format == 'i') | |
766 | size = 'b'; | |
767 | ||
768 | if (format == 'i') | |
769 | val_type = examine_i_type; | |
770 | else if (size == 'b') | |
771 | val_type = examine_b_type; | |
772 | else if (size == 'h') | |
773 | val_type = examine_h_type; | |
774 | else if (size == 'w') | |
775 | val_type = examine_w_type; | |
776 | else if (size == 'g') | |
777 | val_type = examine_g_type; | |
778 | ||
779 | maxelts = 8; | |
780 | if (size == 'w') | |
781 | maxelts = 4; | |
782 | if (size == 'g') | |
783 | maxelts = 2; | |
784 | if (format == 's' || format == 'i') | |
785 | maxelts = 1; | |
786 | ||
79a45b7d TT |
787 | get_formatted_print_options (&opts, format); |
788 | ||
c906108c SS |
789 | /* Print as many objects as specified in COUNT, at most maxelts per line, |
790 | with the address of the next one at the start of each line. */ | |
791 | ||
792 | while (count > 0) | |
793 | { | |
794 | QUIT; | |
795 | print_address (next_address, gdb_stdout); | |
796 | printf_filtered (":"); | |
797 | for (i = maxelts; | |
798 | i > 0 && count > 0; | |
799 | i--, count--) | |
800 | { | |
801 | printf_filtered ("\t"); | |
802 | /* Note that print_formatted sets next_address for the next | |
803 | object. */ | |
804 | last_examine_address = next_address; | |
805 | ||
806 | if (last_examine_value) | |
807 | value_free (last_examine_value); | |
808 | ||
809 | /* The value to be displayed is not fetched greedily. | |
5d51a2db MR |
810 | Instead, to avoid the possibility of a fetched value not |
811 | being used, its retrieval is delayed until the print code | |
c5aa993b JM |
812 | uses it. When examining an instruction stream, the |
813 | disassembler will perform its own memory fetch using just | |
814 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
815 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
816 | is left with the byte sequence from the last complete | |
817 | instruction fetched from memory? */ | |
00a4c844 | 818 | last_examine_value = value_at_lazy (val_type, next_address); |
c906108c SS |
819 | |
820 | if (last_examine_value) | |
821 | release_value (last_examine_value); | |
822 | ||
79a45b7d | 823 | print_formatted (last_examine_value, size, &opts, gdb_stdout); |
a4642986 MR |
824 | |
825 | /* Display any branch delay slots following the final insn. */ | |
826 | if (format == 'i' && count == 1) | |
827 | count += branch_delay_insns; | |
c906108c SS |
828 | } |
829 | printf_filtered ("\n"); | |
830 | gdb_flush (gdb_stdout); | |
831 | } | |
832 | } | |
833 | \f | |
834 | static void | |
fba45db2 | 835 | validate_format (struct format_data fmt, char *cmdname) |
c906108c SS |
836 | { |
837 | if (fmt.size != 0) | |
8a3fe4f8 | 838 | error (_("Size letters are meaningless in \"%s\" command."), cmdname); |
c906108c | 839 | if (fmt.count != 1) |
8a3fe4f8 | 840 | error (_("Item count other than 1 is meaningless in \"%s\" command."), |
c906108c | 841 | cmdname); |
ea37ba09 | 842 | if (fmt.format == 'i') |
8a3fe4f8 | 843 | error (_("Format letter \"%c\" is meaningless in \"%s\" command."), |
c906108c SS |
844 | fmt.format, cmdname); |
845 | } | |
846 | ||
675dcf4f | 847 | /* Evaluate string EXP as an expression in the current language and |
c5aa993b | 848 | print the resulting value. EXP may contain a format specifier as the |
675dcf4f | 849 | first argument ("/x myvar" for example, to print myvar in hex). */ |
c906108c SS |
850 | |
851 | static void | |
fba45db2 | 852 | print_command_1 (char *exp, int inspect, int voidprint) |
c906108c SS |
853 | { |
854 | struct expression *expr; | |
52f0bd74 AC |
855 | struct cleanup *old_chain = 0; |
856 | char format = 0; | |
3d6d86c6 | 857 | struct value *val; |
c906108c SS |
858 | struct format_data fmt; |
859 | int cleanup = 0; | |
860 | ||
c906108c SS |
861 | if (exp && *exp == '/') |
862 | { | |
863 | exp++; | |
864 | fmt = decode_format (&exp, last_format, 0); | |
865 | validate_format (fmt, "print"); | |
866 | last_format = format = fmt.format; | |
867 | } | |
868 | else | |
869 | { | |
870 | fmt.count = 1; | |
871 | fmt.format = 0; | |
872 | fmt.size = 0; | |
873 | } | |
874 | ||
875 | if (exp && *exp) | |
876 | { | |
c906108c SS |
877 | struct type *type; |
878 | expr = parse_expression (exp); | |
c13c43fd | 879 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
880 | cleanup = 1; |
881 | val = evaluate_expression (expr); | |
c906108c SS |
882 | } |
883 | else | |
884 | val = access_value_history (0); | |
885 | ||
df407dfe AC |
886 | if (voidprint || (val && value_type (val) && |
887 | TYPE_CODE (value_type (val)) != TYPE_CODE_VOID)) | |
c906108c | 888 | { |
79a45b7d | 889 | struct value_print_options opts; |
c906108c SS |
890 | int histindex = record_latest_value (val); |
891 | ||
892 | if (histindex >= 0) | |
df407dfe | 893 | annotate_value_history_begin (histindex, value_type (val)); |
c906108c | 894 | else |
df407dfe | 895 | annotate_value_begin (value_type (val)); |
c906108c SS |
896 | |
897 | if (inspect) | |
675dcf4f MK |
898 | printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"", |
899 | exp, histindex); | |
c5aa993b JM |
900 | else if (histindex >= 0) |
901 | printf_filtered ("$%d = ", histindex); | |
c906108c SS |
902 | |
903 | if (histindex >= 0) | |
904 | annotate_value_history_value (); | |
905 | ||
79a45b7d TT |
906 | get_formatted_print_options (&opts, format); |
907 | opts.inspect_it = inspect; | |
908 | ||
909 | print_formatted (val, fmt.size, &opts, gdb_stdout); | |
c906108c SS |
910 | printf_filtered ("\n"); |
911 | ||
912 | if (histindex >= 0) | |
913 | annotate_value_history_end (); | |
914 | else | |
915 | annotate_value_end (); | |
916 | ||
917 | if (inspect) | |
c5aa993b | 918 | printf_unfiltered ("\") )\030"); |
c906108c SS |
919 | } |
920 | ||
921 | if (cleanup) | |
922 | do_cleanups (old_chain); | |
c906108c SS |
923 | } |
924 | ||
c906108c | 925 | static void |
fba45db2 | 926 | print_command (char *exp, int from_tty) |
c906108c SS |
927 | { |
928 | print_command_1 (exp, 0, 1); | |
929 | } | |
930 | ||
675dcf4f | 931 | /* Same as print, except in epoch, it gets its own window. */ |
c906108c | 932 | static void |
fba45db2 | 933 | inspect_command (char *exp, int from_tty) |
c906108c SS |
934 | { |
935 | extern int epoch_interface; | |
936 | ||
937 | print_command_1 (exp, epoch_interface, 1); | |
938 | } | |
939 | ||
675dcf4f | 940 | /* Same as print, except it doesn't print void results. */ |
c906108c | 941 | static void |
fba45db2 | 942 | call_command (char *exp, int from_tty) |
c906108c SS |
943 | { |
944 | print_command_1 (exp, 0, 0); | |
945 | } | |
946 | ||
c906108c | 947 | void |
fba45db2 | 948 | output_command (char *exp, int from_tty) |
c906108c SS |
949 | { |
950 | struct expression *expr; | |
52f0bd74 AC |
951 | struct cleanup *old_chain; |
952 | char format = 0; | |
3d6d86c6 | 953 | struct value *val; |
c906108c | 954 | struct format_data fmt; |
79a45b7d | 955 | struct value_print_options opts; |
c906108c | 956 | |
777ea8f1 DJ |
957 | fmt.size = 0; |
958 | ||
c906108c SS |
959 | if (exp && *exp == '/') |
960 | { | |
961 | exp++; | |
962 | fmt = decode_format (&exp, 0, 0); | |
963 | validate_format (fmt, "output"); | |
964 | format = fmt.format; | |
965 | } | |
966 | ||
967 | expr = parse_expression (exp); | |
c13c43fd | 968 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
969 | |
970 | val = evaluate_expression (expr); | |
971 | ||
df407dfe | 972 | annotate_value_begin (value_type (val)); |
c906108c | 973 | |
79a45b7d TT |
974 | get_formatted_print_options (&opts, format); |
975 | print_formatted (val, fmt.size, &opts, gdb_stdout); | |
c906108c SS |
976 | |
977 | annotate_value_end (); | |
978 | ||
2acceee2 JM |
979 | wrap_here (""); |
980 | gdb_flush (gdb_stdout); | |
981 | ||
c906108c SS |
982 | do_cleanups (old_chain); |
983 | } | |
984 | ||
c906108c | 985 | static void |
fba45db2 | 986 | set_command (char *exp, int from_tty) |
c906108c SS |
987 | { |
988 | struct expression *expr = parse_expression (exp); | |
52f0bd74 | 989 | struct cleanup *old_chain = |
c13c43fd | 990 | make_cleanup (free_current_contents, &expr); |
c906108c SS |
991 | evaluate_expression (expr); |
992 | do_cleanups (old_chain); | |
993 | } | |
994 | ||
c906108c | 995 | static void |
fba45db2 | 996 | sym_info (char *arg, int from_tty) |
c906108c SS |
997 | { |
998 | struct minimal_symbol *msymbol; | |
c5aa993b JM |
999 | struct objfile *objfile; |
1000 | struct obj_section *osect; | |
c5aa993b JM |
1001 | CORE_ADDR addr, sect_addr; |
1002 | int matches = 0; | |
1003 | unsigned int offset; | |
c906108c SS |
1004 | |
1005 | if (!arg) | |
e2e0b3e5 | 1006 | error_no_arg (_("address")); |
c906108c SS |
1007 | |
1008 | addr = parse_and_eval_address (arg); | |
1009 | ALL_OBJSECTIONS (objfile, osect) | |
c5aa993b | 1010 | { |
94277a38 DJ |
1011 | /* Only process each object file once, even if there's a separate |
1012 | debug file. */ | |
1013 | if (objfile->separate_debug_objfile_backlink) | |
1014 | continue; | |
1015 | ||
714835d5 | 1016 | sect_addr = overlay_mapped_address (addr, osect); |
c906108c | 1017 | |
f1f6aadf PA |
1018 | if (obj_section_addr (osect) <= sect_addr |
1019 | && sect_addr < obj_section_endaddr (osect) | |
714835d5 | 1020 | && (msymbol = lookup_minimal_symbol_by_pc_section (sect_addr, osect))) |
c5aa993b | 1021 | { |
c14c28ba | 1022 | const char *obj_name, *mapped, *sec_name, *msym_name; |
e2fd701e DE |
1023 | char *loc_string; |
1024 | struct cleanup *old_chain; | |
c14c28ba | 1025 | |
c5aa993b JM |
1026 | matches = 1; |
1027 | offset = sect_addr - SYMBOL_VALUE_ADDRESS (msymbol); | |
c14c28ba PP |
1028 | mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped"); |
1029 | sec_name = osect->the_bfd_section->name; | |
1030 | msym_name = SYMBOL_PRINT_NAME (msymbol); | |
1031 | ||
e2fd701e DE |
1032 | /* Don't print the offset if it is zero. |
1033 | We assume there's no need to handle i18n of "sym + offset". */ | |
1034 | if (offset) | |
1035 | xasprintf (&loc_string, "%s + %u", msym_name, offset); | |
1036 | else | |
1037 | xasprintf (&loc_string, "%s", msym_name); | |
1038 | ||
1039 | /* Use a cleanup to free loc_string in case the user quits | |
1040 | a pagination request inside printf_filtered. */ | |
1041 | old_chain = make_cleanup (xfree, loc_string); | |
1042 | ||
c14c28ba PP |
1043 | gdb_assert (osect->objfile && osect->objfile->name); |
1044 | obj_name = osect->objfile->name; | |
1045 | ||
1046 | if (MULTI_OBJFILE_P ()) | |
1047 | if (pc_in_unmapped_range (addr, osect)) | |
1048 | if (section_is_overlay (osect)) | |
e2fd701e | 1049 | printf_filtered (_("%s in load address range of " |
c14c28ba | 1050 | "%s overlay section %s of %s\n"), |
e2fd701e | 1051 | loc_string, mapped, sec_name, obj_name); |
c14c28ba | 1052 | else |
e2fd701e | 1053 | printf_filtered (_("%s in load address range of " |
c14c28ba | 1054 | "section %s of %s\n"), |
e2fd701e | 1055 | loc_string, sec_name, obj_name); |
c14c28ba PP |
1056 | else |
1057 | if (section_is_overlay (osect)) | |
e2fd701e DE |
1058 | printf_filtered (_("%s in %s overlay section %s of %s\n"), |
1059 | loc_string, mapped, sec_name, obj_name); | |
c14c28ba | 1060 | else |
e2fd701e DE |
1061 | printf_filtered (_("%s in section %s of %s\n"), |
1062 | loc_string, sec_name, obj_name); | |
c5aa993b | 1063 | else |
c14c28ba PP |
1064 | if (pc_in_unmapped_range (addr, osect)) |
1065 | if (section_is_overlay (osect)) | |
e2fd701e | 1066 | printf_filtered (_("%s in load address range of %s overlay " |
c14c28ba | 1067 | "section %s\n"), |
e2fd701e | 1068 | loc_string, mapped, sec_name); |
c14c28ba | 1069 | else |
e2fd701e DE |
1070 | printf_filtered (_("%s in load address range of section %s\n"), |
1071 | loc_string, sec_name); | |
c14c28ba PP |
1072 | else |
1073 | if (section_is_overlay (osect)) | |
e2fd701e DE |
1074 | printf_filtered (_("%s in %s overlay section %s\n"), |
1075 | loc_string, mapped, sec_name); | |
c14c28ba | 1076 | else |
e2fd701e DE |
1077 | printf_filtered (_("%s in section %s\n"), |
1078 | loc_string, sec_name); | |
1079 | ||
1080 | do_cleanups (old_chain); | |
c5aa993b JM |
1081 | } |
1082 | } | |
c906108c | 1083 | if (matches == 0) |
a3f17187 | 1084 | printf_filtered (_("No symbol matches %s.\n"), arg); |
c906108c SS |
1085 | } |
1086 | ||
c906108c | 1087 | static void |
fba45db2 | 1088 | address_info (char *exp, int from_tty) |
c906108c | 1089 | { |
52f0bd74 AC |
1090 | struct symbol *sym; |
1091 | struct minimal_symbol *msymbol; | |
1092 | long val; | |
714835d5 | 1093 | struct obj_section *section; |
c906108c SS |
1094 | CORE_ADDR load_addr; |
1095 | int is_a_field_of_this; /* C++: lookup_symbol sets this to nonzero | |
1096 | if exp is a field of `this'. */ | |
1097 | ||
1098 | if (exp == 0) | |
8a3fe4f8 | 1099 | error (_("Argument required.")); |
c906108c | 1100 | |
176620f1 | 1101 | sym = lookup_symbol (exp, get_selected_block (0), VAR_DOMAIN, |
2570f2b7 | 1102 | &is_a_field_of_this); |
c906108c SS |
1103 | if (sym == NULL) |
1104 | { | |
1105 | if (is_a_field_of_this) | |
1106 | { | |
1107 | printf_filtered ("Symbol \""); | |
1108 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1109 | current_language->la_language, DMGL_ANSI); | |
e2b23ee9 AF |
1110 | printf_filtered ("\" is a field of the local class variable "); |
1111 | if (current_language->la_language == language_objc) | |
2625d86c | 1112 | printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */ |
e2b23ee9 | 1113 | else |
2625d86c | 1114 | printf_filtered ("`this'\n"); |
c906108c SS |
1115 | return; |
1116 | } | |
1117 | ||
1118 | msymbol = lookup_minimal_symbol (exp, NULL, NULL); | |
1119 | ||
1120 | if (msymbol != NULL) | |
1121 | { | |
1122 | load_addr = SYMBOL_VALUE_ADDRESS (msymbol); | |
1123 | ||
1124 | printf_filtered ("Symbol \""); | |
1125 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1126 | current_language->la_language, DMGL_ANSI); | |
1127 | printf_filtered ("\" is at "); | |
ed49a04f | 1128 | fputs_filtered (paddress (load_addr), gdb_stdout); |
c906108c | 1129 | printf_filtered (" in a file compiled without debugging"); |
714835d5 | 1130 | section = SYMBOL_OBJ_SECTION (msymbol); |
c906108c SS |
1131 | if (section_is_overlay (section)) |
1132 | { | |
1133 | load_addr = overlay_unmapped_address (load_addr, section); | |
1134 | printf_filtered (",\n -- loaded at "); | |
ed49a04f | 1135 | fputs_filtered (paddress (load_addr), gdb_stdout); |
714835d5 UW |
1136 | printf_filtered (" in overlay section %s", |
1137 | section->the_bfd_section->name); | |
c906108c SS |
1138 | } |
1139 | printf_filtered (".\n"); | |
1140 | } | |
1141 | else | |
8a3fe4f8 | 1142 | error (_("No symbol \"%s\" in current context."), exp); |
c906108c SS |
1143 | return; |
1144 | } | |
1145 | ||
1146 | printf_filtered ("Symbol \""); | |
3567439c | 1147 | fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym), |
c906108c SS |
1148 | current_language->la_language, DMGL_ANSI); |
1149 | printf_filtered ("\" is "); | |
c5aa993b | 1150 | val = SYMBOL_VALUE (sym); |
714835d5 | 1151 | section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
1152 | |
1153 | switch (SYMBOL_CLASS (sym)) | |
1154 | { | |
1155 | case LOC_CONST: | |
1156 | case LOC_CONST_BYTES: | |
1157 | printf_filtered ("constant"); | |
1158 | break; | |
1159 | ||
1160 | case LOC_LABEL: | |
1161 | printf_filtered ("a label at address "); | |
ed49a04f MD |
1162 | fputs_filtered (paddress (load_addr = SYMBOL_VALUE_ADDRESS (sym)), |
1163 | gdb_stdout); | |
c906108c SS |
1164 | if (section_is_overlay (section)) |
1165 | { | |
1166 | load_addr = overlay_unmapped_address (load_addr, section); | |
1167 | printf_filtered (",\n -- loaded at "); | |
ed49a04f | 1168 | fputs_filtered (paddress (load_addr), gdb_stdout); |
714835d5 UW |
1169 | printf_filtered (" in overlay section %s", |
1170 | section->the_bfd_section->name); | |
c906108c SS |
1171 | } |
1172 | break; | |
1173 | ||
4c2df51b | 1174 | case LOC_COMPUTED: |
a67af2b9 AC |
1175 | /* FIXME: cagney/2004-01-26: It should be possible to |
1176 | unconditionally call the SYMBOL_OPS method when available. | |
d3efc286 | 1177 | Unfortunately DWARF 2 stores the frame-base (instead of the |
a67af2b9 AC |
1178 | function) location in a function's symbol. Oops! For the |
1179 | moment enable this when/where applicable. */ | |
1180 | SYMBOL_OPS (sym)->describe_location (sym, gdb_stdout); | |
4c2df51b DJ |
1181 | break; |
1182 | ||
c906108c | 1183 | case LOC_REGISTER: |
2a2d4dc3 AS |
1184 | if (SYMBOL_IS_ARGUMENT (sym)) |
1185 | printf_filtered (_("an argument in register %s"), | |
1186 | gdbarch_register_name (current_gdbarch, val)); | |
1187 | else | |
1188 | printf_filtered (_("a variable in register %s"), | |
c9f4d572 | 1189 | gdbarch_register_name (current_gdbarch, val)); |
c906108c SS |
1190 | break; |
1191 | ||
1192 | case LOC_STATIC: | |
a3f17187 | 1193 | printf_filtered (_("static storage at address ")); |
ed49a04f MD |
1194 | fputs_filtered (paddress (load_addr = SYMBOL_VALUE_ADDRESS (sym)), |
1195 | gdb_stdout); | |
c906108c SS |
1196 | if (section_is_overlay (section)) |
1197 | { | |
1198 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1199 | printf_filtered (_(",\n -- loaded at ")); |
ed49a04f | 1200 | fputs_filtered (paddress (load_addr), gdb_stdout); |
714835d5 UW |
1201 | printf_filtered (_(" in overlay section %s"), |
1202 | section->the_bfd_section->name); | |
c906108c SS |
1203 | } |
1204 | break; | |
1205 | ||
c906108c | 1206 | case LOC_REGPARM_ADDR: |
675dcf4f | 1207 | printf_filtered (_("address of an argument in register %s"), |
c9f4d572 | 1208 | gdbarch_register_name (current_gdbarch, val)); |
c906108c SS |
1209 | break; |
1210 | ||
1211 | case LOC_ARG: | |
a3f17187 | 1212 | printf_filtered (_("an argument at offset %ld"), val); |
c906108c SS |
1213 | break; |
1214 | ||
c906108c | 1215 | case LOC_LOCAL: |
a3f17187 | 1216 | printf_filtered (_("a local variable at frame offset %ld"), val); |
c906108c SS |
1217 | break; |
1218 | ||
1219 | case LOC_REF_ARG: | |
a3f17187 | 1220 | printf_filtered (_("a reference argument at offset %ld"), val); |
c906108c SS |
1221 | break; |
1222 | ||
c906108c | 1223 | case LOC_TYPEDEF: |
a3f17187 | 1224 | printf_filtered (_("a typedef")); |
c906108c SS |
1225 | break; |
1226 | ||
1227 | case LOC_BLOCK: | |
a3f17187 | 1228 | printf_filtered (_("a function at address ")); |
675dcf4f | 1229 | load_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); |
ed49a04f | 1230 | fputs_filtered (paddress (load_addr), gdb_stdout); |
c906108c SS |
1231 | if (section_is_overlay (section)) |
1232 | { | |
1233 | load_addr = overlay_unmapped_address (load_addr, section); | |
a3f17187 | 1234 | printf_filtered (_(",\n -- loaded at ")); |
ed49a04f | 1235 | fputs_filtered (paddress (load_addr), gdb_stdout); |
714835d5 UW |
1236 | printf_filtered (_(" in overlay section %s"), |
1237 | section->the_bfd_section->name); | |
c906108c SS |
1238 | } |
1239 | break; | |
1240 | ||
1241 | case LOC_UNRESOLVED: | |
1242 | { | |
1243 | struct minimal_symbol *msym; | |
1244 | ||
3567439c | 1245 | msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), NULL, NULL); |
c906108c SS |
1246 | if (msym == NULL) |
1247 | printf_filtered ("unresolved"); | |
1248 | else | |
1249 | { | |
714835d5 | 1250 | section = SYMBOL_OBJ_SECTION (msym); |
675dcf4f | 1251 | load_addr = SYMBOL_VALUE_ADDRESS (msym); |
e0740f77 JK |
1252 | |
1253 | if (section | |
1254 | && (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0) | |
1255 | printf_filtered (_("a thread-local variable at offset %s " | |
1256 | "in the thread-local storage for `%s'"), | |
1257 | paddr_nz (load_addr), section->objfile->name); | |
1258 | else | |
c906108c | 1259 | { |
e0740f77 | 1260 | printf_filtered (_("static storage at address ")); |
ed49a04f | 1261 | fputs_filtered (paddress (load_addr), gdb_stdout); |
e0740f77 JK |
1262 | if (section_is_overlay (section)) |
1263 | { | |
1264 | load_addr = overlay_unmapped_address (load_addr, section); | |
1265 | printf_filtered (_(",\n -- loaded at ")); | |
1266 | fputs_filtered (paddress (load_addr), gdb_stdout); | |
1267 | printf_filtered (_(" in overlay section %s"), | |
1268 | section->the_bfd_section->name); | |
1269 | } | |
c906108c SS |
1270 | } |
1271 | } | |
1272 | } | |
1273 | break; | |
1274 | ||
c906108c | 1275 | case LOC_OPTIMIZED_OUT: |
a3f17187 | 1276 | printf_filtered (_("optimized out")); |
c906108c | 1277 | break; |
c5aa993b | 1278 | |
c906108c | 1279 | default: |
a3f17187 | 1280 | printf_filtered (_("of unknown (botched) type")); |
c906108c SS |
1281 | break; |
1282 | } | |
1283 | printf_filtered (".\n"); | |
1284 | } | |
1285 | \f | |
675dcf4f MK |
1286 | |
1287 | static void | |
fba45db2 | 1288 | x_command (char *exp, int from_tty) |
c906108c SS |
1289 | { |
1290 | struct expression *expr; | |
1291 | struct format_data fmt; | |
1292 | struct cleanup *old_chain; | |
1293 | struct value *val; | |
1294 | ||
1295 | fmt.format = last_format; | |
1296 | fmt.size = last_size; | |
1297 | fmt.count = 1; | |
1298 | ||
1299 | if (exp && *exp == '/') | |
1300 | { | |
1301 | exp++; | |
1302 | fmt = decode_format (&exp, last_format, last_size); | |
1303 | } | |
1304 | ||
1305 | /* If we have an expression, evaluate it and use it as the address. */ | |
1306 | ||
1307 | if (exp != 0 && *exp != 0) | |
1308 | { | |
1309 | expr = parse_expression (exp); | |
675dcf4f MK |
1310 | /* Cause expression not to be there any more if this command is |
1311 | repeated with Newline. But don't clobber a user-defined | |
1312 | command's definition. */ | |
c906108c SS |
1313 | if (from_tty) |
1314 | *exp = 0; | |
c13c43fd | 1315 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c | 1316 | val = evaluate_expression (expr); |
df407dfe | 1317 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_REF) |
c906108c SS |
1318 | val = value_ind (val); |
1319 | /* In rvalue contexts, such as this, functions are coerced into | |
c5aa993b | 1320 | pointers to functions. This makes "x/i main" work. */ |
c0d8fd9a | 1321 | if (/* last_format == 'i' && */ |
df407dfe | 1322 | TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC |
c5aa993b | 1323 | && VALUE_LVAL (val) == lval_memory) |
c906108c SS |
1324 | next_address = VALUE_ADDRESS (val); |
1325 | else | |
1aa20aa8 | 1326 | next_address = value_as_address (val); |
c906108c SS |
1327 | do_cleanups (old_chain); |
1328 | } | |
1329 | ||
00a4c844 | 1330 | do_examine (fmt, next_address); |
c906108c | 1331 | |
675dcf4f MK |
1332 | /* If the examine succeeds, we remember its size and format for next |
1333 | time. */ | |
c906108c SS |
1334 | last_size = fmt.size; |
1335 | last_format = fmt.format; | |
1336 | ||
1337 | /* Set a couple of internal variables if appropriate. */ | |
1338 | if (last_examine_value) | |
1339 | { | |
1340 | /* Make last address examined available to the user as $_. Use | |
c5aa993b | 1341 | the correct pointer type. */ |
4478b372 | 1342 | struct type *pointer_type |
df407dfe | 1343 | = lookup_pointer_type (value_type (last_examine_value)); |
c906108c | 1344 | set_internalvar (lookup_internalvar ("_"), |
4478b372 JB |
1345 | value_from_pointer (pointer_type, |
1346 | last_examine_address)); | |
c5aa993b | 1347 | |
675dcf4f MK |
1348 | /* Make contents of last address examined available to the user |
1349 | as $__. If the last value has not been fetched from memory | |
1350 | then don't fetch it now; instead mark it by voiding the $__ | |
1351 | variable. */ | |
d69fe07e | 1352 | if (value_lazy (last_examine_value)) |
c906108c SS |
1353 | set_internalvar (lookup_internalvar ("__"), |
1354 | allocate_value (builtin_type_void)); | |
1355 | else | |
1356 | set_internalvar (lookup_internalvar ("__"), last_examine_value); | |
1357 | } | |
1358 | } | |
c906108c | 1359 | \f |
c5aa993b | 1360 | |
c906108c SS |
1361 | /* Add an expression to the auto-display chain. |
1362 | Specify the expression. */ | |
1363 | ||
1364 | static void | |
fba45db2 | 1365 | display_command (char *exp, int from_tty) |
c906108c SS |
1366 | { |
1367 | struct format_data fmt; | |
52f0bd74 AC |
1368 | struct expression *expr; |
1369 | struct display *new; | |
c906108c SS |
1370 | int display_it = 1; |
1371 | ||
1372 | #if defined(TUI) | |
021e7609 AC |
1373 | /* NOTE: cagney/2003-02-13 The `tui_active' was previously |
1374 | `tui_version'. */ | |
fd33e6cb | 1375 | if (tui_active && exp != NULL && *exp == '$') |
080ce8c0 | 1376 | display_it = (tui_set_layout_for_display_command (exp) == TUI_FAILURE); |
c906108c SS |
1377 | #endif |
1378 | ||
1379 | if (display_it) | |
1380 | { | |
1381 | if (exp == 0) | |
1382 | { | |
1383 | do_displays (); | |
1384 | return; | |
1385 | } | |
1386 | ||
1387 | if (*exp == '/') | |
1388 | { | |
1389 | exp++; | |
1390 | fmt = decode_format (&exp, 0, 0); | |
1391 | if (fmt.size && fmt.format == 0) | |
1392 | fmt.format = 'x'; | |
1393 | if (fmt.format == 'i' || fmt.format == 's') | |
1394 | fmt.size = 'b'; | |
1395 | } | |
1396 | else | |
1397 | { | |
1398 | fmt.format = 0; | |
1399 | fmt.size = 0; | |
1400 | fmt.count = 0; | |
1401 | } | |
1402 | ||
a3247a22 | 1403 | innermost_block = NULL; |
c906108c SS |
1404 | expr = parse_expression (exp); |
1405 | ||
1406 | new = (struct display *) xmalloc (sizeof (struct display)); | |
1407 | ||
fa8a61dc | 1408 | new->exp_string = xstrdup (exp); |
c906108c SS |
1409 | new->exp = expr; |
1410 | new->block = innermost_block; | |
1411 | new->next = display_chain; | |
1412 | new->number = ++display_number; | |
1413 | new->format = fmt; | |
b5de0fa7 | 1414 | new->enabled_p = 1; |
c906108c SS |
1415 | display_chain = new; |
1416 | ||
1417 | if (from_tty && target_has_execution) | |
1418 | do_one_display (new); | |
1419 | ||
1420 | dont_repeat (); | |
1421 | } | |
1422 | } | |
1423 | ||
1424 | static void | |
fba45db2 | 1425 | free_display (struct display *d) |
c906108c | 1426 | { |
fa8a61dc | 1427 | xfree (d->exp_string); |
b8c9b27d KB |
1428 | xfree (d->exp); |
1429 | xfree (d); | |
c906108c SS |
1430 | } |
1431 | ||
675dcf4f MK |
1432 | /* Clear out the display_chain. Done when new symtabs are loaded, |
1433 | since this invalidates the types stored in many expressions. */ | |
c906108c SS |
1434 | |
1435 | void | |
fba45db2 | 1436 | clear_displays (void) |
c906108c | 1437 | { |
52f0bd74 | 1438 | struct display *d; |
c906108c SS |
1439 | |
1440 | while ((d = display_chain) != NULL) | |
1441 | { | |
c906108c | 1442 | display_chain = d->next; |
fa8a61dc | 1443 | free_display (d); |
c906108c SS |
1444 | } |
1445 | } | |
1446 | ||
1447 | /* Delete the auto-display number NUM. */ | |
1448 | ||
1449 | static void | |
fba45db2 | 1450 | delete_display (int num) |
c906108c | 1451 | { |
52f0bd74 | 1452 | struct display *d1, *d; |
c906108c SS |
1453 | |
1454 | if (!display_chain) | |
8a3fe4f8 | 1455 | error (_("No display number %d."), num); |
c906108c SS |
1456 | |
1457 | if (display_chain->number == num) | |
1458 | { | |
1459 | d1 = display_chain; | |
1460 | display_chain = d1->next; | |
1461 | free_display (d1); | |
1462 | } | |
1463 | else | |
c5aa993b | 1464 | for (d = display_chain;; d = d->next) |
c906108c SS |
1465 | { |
1466 | if (d->next == 0) | |
8a3fe4f8 | 1467 | error (_("No display number %d."), num); |
c906108c SS |
1468 | if (d->next->number == num) |
1469 | { | |
1470 | d1 = d->next; | |
1471 | d->next = d1->next; | |
1472 | free_display (d1); | |
1473 | break; | |
1474 | } | |
1475 | } | |
1476 | } | |
1477 | ||
1478 | /* Delete some values from the auto-display chain. | |
1479 | Specify the element numbers. */ | |
1480 | ||
1481 | static void | |
fba45db2 | 1482 | undisplay_command (char *args, int from_tty) |
c906108c | 1483 | { |
52f0bd74 AC |
1484 | char *p = args; |
1485 | char *p1; | |
1486 | int num; | |
c906108c SS |
1487 | |
1488 | if (args == 0) | |
1489 | { | |
9e2f0ad4 | 1490 | if (query (_("Delete all auto-display expressions? "))) |
c906108c SS |
1491 | clear_displays (); |
1492 | dont_repeat (); | |
1493 | return; | |
1494 | } | |
1495 | ||
1496 | while (*p) | |
1497 | { | |
1498 | p1 = p; | |
c5aa993b JM |
1499 | while (*p1 >= '0' && *p1 <= '9') |
1500 | p1++; | |
c906108c | 1501 | if (*p1 && *p1 != ' ' && *p1 != '\t') |
8a3fe4f8 | 1502 | error (_("Arguments must be display numbers.")); |
c906108c SS |
1503 | |
1504 | num = atoi (p); | |
1505 | ||
1506 | delete_display (num); | |
1507 | ||
1508 | p = p1; | |
c5aa993b JM |
1509 | while (*p == ' ' || *p == '\t') |
1510 | p++; | |
c906108c SS |
1511 | } |
1512 | dont_repeat (); | |
1513 | } | |
1514 | ||
1515 | /* Display a single auto-display. | |
1516 | Do nothing if the display cannot be printed in the current context, | |
1517 | or if the display is disabled. */ | |
1518 | ||
1519 | static void | |
fba45db2 | 1520 | do_one_display (struct display *d) |
c906108c SS |
1521 | { |
1522 | int within_current_scope; | |
1523 | ||
b5de0fa7 | 1524 | if (d->enabled_p == 0) |
c906108c SS |
1525 | return; |
1526 | ||
a3247a22 PP |
1527 | if (d->exp == NULL) |
1528 | { | |
1529 | volatile struct gdb_exception ex; | |
1530 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1531 | { | |
1532 | innermost_block = NULL; | |
1533 | d->exp = parse_expression (d->exp_string); | |
1534 | d->block = innermost_block; | |
1535 | } | |
1536 | if (ex.reason < 0) | |
1537 | { | |
1538 | /* Can't re-parse the expression. Disable this display item. */ | |
1539 | d->enabled_p = 0; | |
1540 | warning (_("Unable to display \"%s\": %s"), | |
1541 | d->exp_string, ex.message); | |
1542 | return; | |
1543 | } | |
1544 | } | |
1545 | ||
c906108c | 1546 | if (d->block) |
ae767bfb | 1547 | within_current_scope = contained_in (get_selected_block (0), d->block); |
c906108c SS |
1548 | else |
1549 | within_current_scope = 1; | |
1550 | if (!within_current_scope) | |
1551 | return; | |
1552 | ||
1553 | current_display_number = d->number; | |
1554 | ||
1555 | annotate_display_begin (); | |
1556 | printf_filtered ("%d", d->number); | |
1557 | annotate_display_number_end (); | |
1558 | printf_filtered (": "); | |
1559 | if (d->format.size) | |
1560 | { | |
1561 | CORE_ADDR addr; | |
3d6d86c6 | 1562 | struct value *val; |
c906108c SS |
1563 | |
1564 | annotate_display_format (); | |
1565 | ||
1566 | printf_filtered ("x/"); | |
1567 | if (d->format.count != 1) | |
1568 | printf_filtered ("%d", d->format.count); | |
1569 | printf_filtered ("%c", d->format.format); | |
1570 | if (d->format.format != 'i' && d->format.format != 's') | |
1571 | printf_filtered ("%c", d->format.size); | |
1572 | printf_filtered (" "); | |
1573 | ||
1574 | annotate_display_expression (); | |
1575 | ||
fa8a61dc | 1576 | puts_filtered (d->exp_string); |
c906108c SS |
1577 | annotate_display_expression_end (); |
1578 | ||
6a2eb474 | 1579 | if (d->format.count != 1 || d->format.format == 'i') |
c906108c SS |
1580 | printf_filtered ("\n"); |
1581 | else | |
1582 | printf_filtered (" "); | |
c5aa993b | 1583 | |
c906108c | 1584 | val = evaluate_expression (d->exp); |
1aa20aa8 | 1585 | addr = value_as_address (val); |
c906108c | 1586 | if (d->format.format == 'i') |
bf6ae464 | 1587 | addr = gdbarch_addr_bits_remove (current_gdbarch, addr); |
c906108c SS |
1588 | |
1589 | annotate_display_value (); | |
1590 | ||
00a4c844 | 1591 | do_examine (d->format, addr); |
c906108c SS |
1592 | } |
1593 | else | |
1594 | { | |
79a45b7d TT |
1595 | struct value_print_options opts; |
1596 | ||
c906108c SS |
1597 | annotate_display_format (); |
1598 | ||
1599 | if (d->format.format) | |
1600 | printf_filtered ("/%c ", d->format.format); | |
1601 | ||
1602 | annotate_display_expression (); | |
1603 | ||
fa8a61dc | 1604 | puts_filtered (d->exp_string); |
c906108c SS |
1605 | annotate_display_expression_end (); |
1606 | ||
1607 | printf_filtered (" = "); | |
1608 | ||
1609 | annotate_display_expression (); | |
1610 | ||
79a45b7d | 1611 | get_formatted_print_options (&opts, d->format.format); |
c906108c | 1612 | print_formatted (evaluate_expression (d->exp), |
79a45b7d | 1613 | d->format.size, &opts, gdb_stdout); |
c906108c SS |
1614 | printf_filtered ("\n"); |
1615 | } | |
1616 | ||
1617 | annotate_display_end (); | |
1618 | ||
1619 | gdb_flush (gdb_stdout); | |
1620 | current_display_number = -1; | |
1621 | } | |
1622 | ||
1623 | /* Display all of the values on the auto-display chain which can be | |
1624 | evaluated in the current scope. */ | |
1625 | ||
1626 | void | |
fba45db2 | 1627 | do_displays (void) |
c906108c | 1628 | { |
52f0bd74 | 1629 | struct display *d; |
c906108c SS |
1630 | |
1631 | for (d = display_chain; d; d = d->next) | |
1632 | do_one_display (d); | |
1633 | } | |
1634 | ||
1635 | /* Delete the auto-display which we were in the process of displaying. | |
1636 | This is done when there is an error or a signal. */ | |
1637 | ||
1638 | void | |
fba45db2 | 1639 | disable_display (int num) |
c906108c | 1640 | { |
52f0bd74 | 1641 | struct display *d; |
c906108c SS |
1642 | |
1643 | for (d = display_chain; d; d = d->next) | |
1644 | if (d->number == num) | |
1645 | { | |
b5de0fa7 | 1646 | d->enabled_p = 0; |
c906108c SS |
1647 | return; |
1648 | } | |
a3f17187 | 1649 | printf_unfiltered (_("No display number %d.\n"), num); |
c906108c | 1650 | } |
c5aa993b | 1651 | |
c906108c | 1652 | void |
fba45db2 | 1653 | disable_current_display (void) |
c906108c SS |
1654 | { |
1655 | if (current_display_number >= 0) | |
1656 | { | |
1657 | disable_display (current_display_number); | |
675dcf4f MK |
1658 | fprintf_unfiltered (gdb_stderr, _("\ |
1659 | Disabling display %d to avoid infinite recursion.\n"), | |
c5aa993b | 1660 | current_display_number); |
c906108c SS |
1661 | } |
1662 | current_display_number = -1; | |
1663 | } | |
1664 | ||
1665 | static void | |
fba45db2 | 1666 | display_info (char *ignore, int from_tty) |
c906108c | 1667 | { |
52f0bd74 | 1668 | struct display *d; |
c906108c SS |
1669 | |
1670 | if (!display_chain) | |
a3f17187 | 1671 | printf_unfiltered (_("There are no auto-display expressions now.\n")); |
c906108c | 1672 | else |
a3f17187 AC |
1673 | printf_filtered (_("Auto-display expressions now in effect:\n\ |
1674 | Num Enb Expression\n")); | |
c906108c SS |
1675 | |
1676 | for (d = display_chain; d; d = d->next) | |
1677 | { | |
b5de0fa7 | 1678 | printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]); |
c906108c SS |
1679 | if (d->format.size) |
1680 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
c5aa993b | 1681 | d->format.format); |
c906108c SS |
1682 | else if (d->format.format) |
1683 | printf_filtered ("/%c ", d->format.format); | |
fa8a61dc | 1684 | puts_filtered (d->exp_string); |
ae767bfb | 1685 | if (d->block && !contained_in (get_selected_block (0), d->block)) |
a3f17187 | 1686 | printf_filtered (_(" (cannot be evaluated in the current context)")); |
c906108c SS |
1687 | printf_filtered ("\n"); |
1688 | gdb_flush (gdb_stdout); | |
1689 | } | |
1690 | } | |
1691 | ||
1692 | static void | |
fba45db2 | 1693 | enable_display (char *args, int from_tty) |
c906108c | 1694 | { |
52f0bd74 AC |
1695 | char *p = args; |
1696 | char *p1; | |
1697 | int num; | |
1698 | struct display *d; | |
c906108c SS |
1699 | |
1700 | if (p == 0) | |
1701 | { | |
1702 | for (d = display_chain; d; d = d->next) | |
b5de0fa7 | 1703 | d->enabled_p = 1; |
c906108c SS |
1704 | } |
1705 | else | |
1706 | while (*p) | |
1707 | { | |
1708 | p1 = p; | |
1709 | while (*p1 >= '0' && *p1 <= '9') | |
1710 | p1++; | |
1711 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
8a3fe4f8 | 1712 | error (_("Arguments must be display numbers.")); |
c5aa993b | 1713 | |
c906108c | 1714 | num = atoi (p); |
c5aa993b | 1715 | |
c906108c SS |
1716 | for (d = display_chain; d; d = d->next) |
1717 | if (d->number == num) | |
1718 | { | |
b5de0fa7 | 1719 | d->enabled_p = 1; |
c906108c SS |
1720 | goto win; |
1721 | } | |
a3f17187 | 1722 | printf_unfiltered (_("No display number %d.\n"), num); |
c906108c SS |
1723 | win: |
1724 | p = p1; | |
1725 | while (*p == ' ' || *p == '\t') | |
1726 | p++; | |
1727 | } | |
1728 | } | |
1729 | ||
c906108c | 1730 | static void |
fba45db2 | 1731 | disable_display_command (char *args, int from_tty) |
c906108c | 1732 | { |
52f0bd74 AC |
1733 | char *p = args; |
1734 | char *p1; | |
1735 | struct display *d; | |
c906108c SS |
1736 | |
1737 | if (p == 0) | |
1738 | { | |
1739 | for (d = display_chain; d; d = d->next) | |
b5de0fa7 | 1740 | d->enabled_p = 0; |
c906108c SS |
1741 | } |
1742 | else | |
1743 | while (*p) | |
1744 | { | |
1745 | p1 = p; | |
1746 | while (*p1 >= '0' && *p1 <= '9') | |
1747 | p1++; | |
1748 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
8a3fe4f8 | 1749 | error (_("Arguments must be display numbers.")); |
c5aa993b | 1750 | |
c906108c SS |
1751 | disable_display (atoi (p)); |
1752 | ||
1753 | p = p1; | |
1754 | while (*p == ' ' || *p == '\t') | |
1755 | p++; | |
1756 | } | |
1757 | } | |
a3247a22 PP |
1758 | |
1759 | /* Return 1 if D uses SOLIB (and will become dangling when SOLIB | |
1760 | is unloaded), otherwise return 0. */ | |
1761 | ||
1762 | static int | |
1763 | display_uses_solib_p (const struct display *d, | |
1764 | const struct so_list *solib) | |
1765 | { | |
1766 | int i; | |
1767 | struct expression *const exp = d->exp; | |
1768 | ||
1769 | if (d->block != NULL | |
5fd1a349 | 1770 | && solib_contains_address_p (solib, d->block->startaddr)) |
a3247a22 PP |
1771 | return 1; |
1772 | ||
1773 | for (i = 0; i < exp->nelts; ) | |
1774 | { | |
1775 | int args, oplen = 0; | |
1776 | const union exp_element *const elts = exp->elts; | |
1777 | ||
1778 | if (elts[i].opcode == OP_VAR_VALUE) | |
1779 | { | |
1780 | const struct block *const block = elts[i + 1].block; | |
1781 | const struct symbol *const symbol = elts[i + 2].symbol; | |
1782 | const struct obj_section *const section = | |
1783 | SYMBOL_OBJ_SECTION (symbol); | |
1784 | ||
1785 | if (block != NULL | |
5fd1a349 | 1786 | && solib_contains_address_p (solib, block->startaddr)) |
a3247a22 PP |
1787 | return 1; |
1788 | ||
1789 | if (section && section->objfile == solib->objfile) | |
1790 | return 1; | |
1791 | } | |
1792 | exp->language_defn->la_exp_desc->operator_length (exp, i + 1, | |
1793 | &oplen, &args); | |
1794 | gdb_assert (oplen > 0); | |
1795 | i += oplen; | |
1796 | } | |
1797 | return 0; | |
1798 | } | |
1799 | ||
1800 | /* display_chain items point to blocks and expressions. Some expressions in | |
1801 | turn may point to symbols. | |
1802 | Both symbols and blocks are obstack_alloc'd on objfile_stack, and are | |
1803 | obstack_free'd when a shared library is unloaded. | |
1804 | Clear pointers that are about to become dangling. | |
1805 | Both .exp and .block fields will be restored next time we need to display | |
1806 | an item by re-parsing .exp_string field in the new execution context. */ | |
1807 | ||
1808 | static void | |
1809 | clear_dangling_display_expressions (struct so_list *solib) | |
1810 | { | |
1811 | struct display *d; | |
1812 | struct objfile *objfile = NULL; | |
1813 | ||
1814 | for (d = display_chain; d; d = d->next) | |
1815 | { | |
1816 | if (d->exp && display_uses_solib_p (d, solib)) | |
1817 | { | |
1818 | xfree (d->exp); | |
1819 | d->exp = NULL; | |
1820 | d->block = NULL; | |
1821 | } | |
1822 | } | |
1823 | } | |
c906108c | 1824 | \f |
c5aa993b | 1825 | |
675dcf4f | 1826 | /* Print the value in stack frame FRAME of a variable specified by a |
aad95b57 TT |
1827 | struct symbol. NAME is the name to print; if NULL then VAR's print |
1828 | name will be used. STREAM is the ui_file on which to print the | |
1829 | value. INDENT specifies the number of indent levels to print | |
1830 | before printing the variable name. */ | |
c906108c SS |
1831 | |
1832 | void | |
aad95b57 TT |
1833 | print_variable_and_value (const char *name, struct symbol *var, |
1834 | struct frame_info *frame, | |
1835 | struct ui_file *stream, int indent) | |
c906108c | 1836 | { |
aad95b57 | 1837 | struct value *val; |
79a45b7d | 1838 | struct value_print_options opts; |
c906108c | 1839 | |
aad95b57 TT |
1840 | if (!name) |
1841 | name = SYMBOL_PRINT_NAME (var); | |
1842 | ||
1843 | fprintf_filtered (stream, "%s%s = ", n_spaces (2 * indent), name); | |
1844 | ||
1845 | val = read_var_value (var, frame); | |
79a45b7d | 1846 | get_user_print_options (&opts); |
aad95b57 TT |
1847 | common_val_print (val, stream, indent, &opts, current_language); |
1848 | fprintf_filtered (stream, "\n"); | |
c906108c SS |
1849 | } |
1850 | ||
c906108c | 1851 | static void |
fba45db2 | 1852 | printf_command (char *arg, int from_tty) |
c906108c | 1853 | { |
52f0bd74 AC |
1854 | char *f = NULL; |
1855 | char *s = arg; | |
c906108c | 1856 | char *string = NULL; |
3d6d86c6 | 1857 | struct value **val_args; |
c906108c SS |
1858 | char *substrings; |
1859 | char *current_substring; | |
1860 | int nargs = 0; | |
1861 | int allocated_args = 20; | |
1862 | struct cleanup *old_cleanups; | |
1863 | ||
675dcf4f | 1864 | val_args = xmalloc (allocated_args * sizeof (struct value *)); |
c13c43fd | 1865 | old_cleanups = make_cleanup (free_current_contents, &val_args); |
c906108c SS |
1866 | |
1867 | if (s == 0) | |
e2e0b3e5 | 1868 | error_no_arg (_("format-control string and values to print")); |
c906108c SS |
1869 | |
1870 | /* Skip white space before format string */ | |
c5aa993b JM |
1871 | while (*s == ' ' || *s == '\t') |
1872 | s++; | |
c906108c | 1873 | |
675dcf4f | 1874 | /* A format string should follow, enveloped in double quotes. */ |
c906108c | 1875 | if (*s++ != '"') |
8a3fe4f8 | 1876 | error (_("Bad format string, missing '\"'.")); |
c906108c SS |
1877 | |
1878 | /* Parse the format-control string and copy it into the string STRING, | |
1879 | processing some kinds of escape sequence. */ | |
1880 | ||
1881 | f = string = (char *) alloca (strlen (s) + 1); | |
1882 | ||
1883 | while (*s != '"') | |
1884 | { | |
1885 | int c = *s++; | |
1886 | switch (c) | |
1887 | { | |
1888 | case '\0': | |
8a3fe4f8 | 1889 | error (_("Bad format string, non-terminated '\"'.")); |
c906108c SS |
1890 | |
1891 | case '\\': | |
1892 | switch (c = *s++) | |
1893 | { | |
1894 | case '\\': | |
1895 | *f++ = '\\'; | |
1896 | break; | |
1897 | case 'a': | |
c906108c | 1898 | *f++ = '\a'; |
c906108c SS |
1899 | break; |
1900 | case 'b': | |
1901 | *f++ = '\b'; | |
1902 | break; | |
1903 | case 'f': | |
1904 | *f++ = '\f'; | |
1905 | break; | |
1906 | case 'n': | |
1907 | *f++ = '\n'; | |
1908 | break; | |
1909 | case 'r': | |
1910 | *f++ = '\r'; | |
1911 | break; | |
1912 | case 't': | |
1913 | *f++ = '\t'; | |
1914 | break; | |
1915 | case 'v': | |
1916 | *f++ = '\v'; | |
1917 | break; | |
1918 | case '"': | |
1919 | *f++ = '"'; | |
1920 | break; | |
1921 | default: | |
1922 | /* ??? TODO: handle other escape sequences */ | |
8a3fe4f8 | 1923 | error (_("Unrecognized escape character \\%c in format string."), |
c906108c SS |
1924 | c); |
1925 | } | |
1926 | break; | |
1927 | ||
1928 | default: | |
1929 | *f++ = c; | |
1930 | } | |
1931 | } | |
1932 | ||
1933 | /* Skip over " and following space and comma. */ | |
1934 | s++; | |
1935 | *f++ = '\0'; | |
c5aa993b JM |
1936 | while (*s == ' ' || *s == '\t') |
1937 | s++; | |
c906108c SS |
1938 | |
1939 | if (*s != ',' && *s != 0) | |
8a3fe4f8 | 1940 | error (_("Invalid argument syntax")); |
c906108c | 1941 | |
c5aa993b JM |
1942 | if (*s == ',') |
1943 | s++; | |
1944 | while (*s == ' ' || *s == '\t') | |
1945 | s++; | |
c906108c SS |
1946 | |
1947 | /* Need extra space for the '\0's. Doubling the size is sufficient. */ | |
1948 | substrings = alloca (strlen (string) * 2); | |
1949 | current_substring = substrings; | |
1950 | ||
1951 | { | |
1952 | /* Now scan the string for %-specs and see what kinds of args they want. | |
1953 | argclass[I] classifies the %-specs so we can give printf_filtered | |
1954 | something of the right size. */ | |
1955 | ||
c5aa993b JM |
1956 | enum argclass |
1957 | { | |
46e9880c | 1958 | int_arg, long_arg, long_long_arg, ptr_arg, string_arg, |
1a619819 | 1959 | double_arg, long_double_arg, decfloat_arg |
c5aa993b | 1960 | }; |
c906108c SS |
1961 | enum argclass *argclass; |
1962 | enum argclass this_argclass; | |
1963 | char *last_arg; | |
1964 | int nargs_wanted; | |
c906108c SS |
1965 | int i; |
1966 | ||
1967 | argclass = (enum argclass *) alloca (strlen (s) * sizeof *argclass); | |
1968 | nargs_wanted = 0; | |
1969 | f = string; | |
1970 | last_arg = string; | |
1971 | while (*f) | |
1972 | if (*f++ == '%') | |
1973 | { | |
46e9880c DJ |
1974 | int seen_hash = 0, seen_zero = 0, lcount = 0, seen_prec = 0; |
1975 | int seen_space = 0, seen_plus = 0; | |
0aea4bf3 LM |
1976 | int seen_big_l = 0, seen_h = 0, seen_big_h = 0; |
1977 | int seen_big_d = 0, seen_double_big_d = 0; | |
46e9880c DJ |
1978 | int bad = 0; |
1979 | ||
1980 | /* Check the validity of the format specifier, and work | |
1981 | out what argument it expects. We only accept C89 | |
1982 | format strings, with the exception of long long (which | |
1983 | we autoconf for). */ | |
1984 | ||
1985 | /* Skip over "%%". */ | |
1986 | if (*f == '%') | |
c906108c | 1987 | { |
c906108c | 1988 | f++; |
46e9880c | 1989 | continue; |
c906108c | 1990 | } |
46e9880c DJ |
1991 | |
1992 | /* The first part of a format specifier is a set of flag | |
1993 | characters. */ | |
1994 | while (strchr ("0-+ #", *f)) | |
1995 | { | |
1996 | if (*f == '#') | |
1997 | seen_hash = 1; | |
1998 | else if (*f == '0') | |
1999 | seen_zero = 1; | |
2000 | else if (*f == ' ') | |
2001 | seen_space = 1; | |
2002 | else if (*f == '+') | |
2003 | seen_plus = 1; | |
2004 | f++; | |
2005 | } | |
2006 | ||
2007 | /* The next part of a format specifier is a width. */ | |
2008 | while (strchr ("0123456789", *f)) | |
2009 | f++; | |
2010 | ||
2011 | /* The next part of a format specifier is a precision. */ | |
2012 | if (*f == '.') | |
2013 | { | |
2014 | seen_prec = 1; | |
2015 | f++; | |
2016 | while (strchr ("0123456789", *f)) | |
2017 | f++; | |
2018 | } | |
2019 | ||
2020 | /* The next part of a format specifier is a length modifier. */ | |
2021 | if (*f == 'h') | |
2022 | { | |
2023 | seen_h = 1; | |
2024 | f++; | |
2025 | } | |
2026 | else if (*f == 'l') | |
2027 | { | |
2028 | f++; | |
2029 | lcount++; | |
2030 | if (*f == 'l') | |
2031 | { | |
2032 | f++; | |
2033 | lcount++; | |
2034 | } | |
2035 | } | |
2036 | else if (*f == 'L') | |
2037 | { | |
2038 | seen_big_l = 1; | |
2039 | f++; | |
2040 | } | |
0aea4bf3 LM |
2041 | /* Decimal32 modifier. */ |
2042 | else if (*f == 'H') | |
2043 | { | |
2044 | seen_big_h = 1; | |
2045 | f++; | |
2046 | } | |
2047 | /* Decimal64 and Decimal128 modifiers. */ | |
2048 | else if (*f == 'D') | |
2049 | { | |
2050 | f++; | |
2051 | ||
2052 | /* Check for a Decimal128. */ | |
2053 | if (*f == 'D') | |
2054 | { | |
2055 | f++; | |
2056 | seen_double_big_d = 1; | |
2057 | } | |
2058 | else | |
2059 | seen_big_d = 1; | |
2060 | } | |
46e9880c | 2061 | |
c906108c SS |
2062 | switch (*f) |
2063 | { | |
46e9880c DJ |
2064 | case 'u': |
2065 | if (seen_hash) | |
2066 | bad = 1; | |
2067 | /* FALLTHROUGH */ | |
2068 | ||
2069 | case 'o': | |
2070 | case 'x': | |
2071 | case 'X': | |
2072 | if (seen_space || seen_plus) | |
2073 | bad = 1; | |
2074 | /* FALLTHROUGH */ | |
2075 | ||
2076 | case 'd': | |
2077 | case 'i': | |
2078 | if (lcount == 0) | |
2079 | this_argclass = int_arg; | |
2080 | else if (lcount == 1) | |
2081 | this_argclass = long_arg; | |
2082 | else | |
2083 | this_argclass = long_long_arg; | |
2084 | ||
2085 | if (seen_big_l) | |
2086 | bad = 1; | |
2087 | break; | |
2088 | ||
2089 | case 'c': | |
2090 | this_argclass = int_arg; | |
2091 | if (lcount || seen_h || seen_big_l) | |
2092 | bad = 1; | |
2093 | if (seen_prec || seen_zero || seen_space || seen_plus) | |
2094 | bad = 1; | |
2095 | break; | |
2096 | ||
2097 | case 'p': | |
2098 | this_argclass = ptr_arg; | |
2099 | if (lcount || seen_h || seen_big_l) | |
2100 | bad = 1; | |
2101 | if (seen_prec || seen_zero || seen_space || seen_plus) | |
2102 | bad = 1; | |
2103 | break; | |
2104 | ||
c906108c SS |
2105 | case 's': |
2106 | this_argclass = string_arg; | |
46e9880c DJ |
2107 | if (lcount || seen_h || seen_big_l) |
2108 | bad = 1; | |
2109 | if (seen_zero || seen_space || seen_plus) | |
2110 | bad = 1; | |
c906108c SS |
2111 | break; |
2112 | ||
2113 | case 'e': | |
2114 | case 'f': | |
2115 | case 'g': | |
46e9880c DJ |
2116 | case 'E': |
2117 | case 'G': | |
0aea4bf3 LM |
2118 | if (seen_big_h || seen_big_d || seen_double_big_d) |
2119 | this_argclass = decfloat_arg; | |
2120 | else if (seen_big_l) | |
46e9880c DJ |
2121 | this_argclass = long_double_arg; |
2122 | else | |
2123 | this_argclass = double_arg; | |
2124 | ||
2125 | if (lcount || seen_h) | |
2126 | bad = 1; | |
c906108c SS |
2127 | break; |
2128 | ||
2129 | case '*': | |
8a3fe4f8 | 2130 | error (_("`*' not supported for precision or width in printf")); |
c906108c SS |
2131 | |
2132 | case 'n': | |
8a3fe4f8 | 2133 | error (_("Format specifier `n' not supported in printf")); |
c906108c | 2134 | |
46e9880c DJ |
2135 | case '\0': |
2136 | error (_("Incomplete format specifier at end of format string")); | |
c906108c SS |
2137 | |
2138 | default: | |
46e9880c | 2139 | error (_("Unrecognized format specifier '%c' in printf"), *f); |
c906108c | 2140 | } |
46e9880c DJ |
2141 | |
2142 | if (bad) | |
2143 | error (_("Inappropriate modifiers to format specifier '%c' in printf"), | |
2144 | *f); | |
2145 | ||
c906108c | 2146 | f++; |
09d71d23 AS |
2147 | |
2148 | if (lcount > 1 && USE_PRINTF_I64) | |
2149 | { | |
2150 | /* Windows' printf does support long long, but not the usual way. | |
2151 | Convert %lld to %I64d. */ | |
2152 | int length_before_ll = f - last_arg - 1 - lcount; | |
2153 | strncpy (current_substring, last_arg, length_before_ll); | |
2154 | strcpy (current_substring + length_before_ll, "I64"); | |
2155 | current_substring[length_before_ll + 3] = | |
2156 | last_arg[length_before_ll + lcount]; | |
2157 | current_substring += length_before_ll + 4; | |
2158 | } | |
2159 | else | |
2160 | { | |
2161 | strncpy (current_substring, last_arg, f - last_arg); | |
2162 | current_substring += f - last_arg; | |
2163 | } | |
46e9880c DJ |
2164 | *current_substring++ = '\0'; |
2165 | last_arg = f; | |
2166 | argclass[nargs_wanted++] = this_argclass; | |
c906108c SS |
2167 | } |
2168 | ||
2169 | /* Now, parse all arguments and evaluate them. | |
2170 | Store the VALUEs in VAL_ARGS. */ | |
2171 | ||
2172 | while (*s != '\0') | |
2173 | { | |
2174 | char *s1; | |
2175 | if (nargs == allocated_args) | |
f976f6d4 AC |
2176 | val_args = (struct value **) xrealloc ((char *) val_args, |
2177 | (allocated_args *= 2) | |
2178 | * sizeof (struct value *)); | |
c906108c SS |
2179 | s1 = s; |
2180 | val_args[nargs] = parse_to_comma_and_eval (&s1); | |
c5aa993b | 2181 | |
c906108c SS |
2182 | nargs++; |
2183 | s = s1; | |
2184 | if (*s == ',') | |
2185 | s++; | |
2186 | } | |
c5aa993b | 2187 | |
c906108c | 2188 | if (nargs != nargs_wanted) |
8a3fe4f8 | 2189 | error (_("Wrong number of arguments for specified format-string")); |
c906108c SS |
2190 | |
2191 | /* Now actually print them. */ | |
2192 | current_substring = substrings; | |
2193 | for (i = 0; i < nargs; i++) | |
2194 | { | |
2195 | switch (argclass[i]) | |
2196 | { | |
2197 | case string_arg: | |
2198 | { | |
777ea8f1 | 2199 | gdb_byte *str; |
c906108c SS |
2200 | CORE_ADDR tem; |
2201 | int j; | |
1aa20aa8 | 2202 | tem = value_as_address (val_args[i]); |
c906108c SS |
2203 | |
2204 | /* This is a %s argument. Find the length of the string. */ | |
c5aa993b | 2205 | for (j = 0;; j++) |
c906108c | 2206 | { |
777ea8f1 | 2207 | gdb_byte c; |
c906108c | 2208 | QUIT; |
d4b2399a | 2209 | read_memory (tem + j, &c, 1); |
c906108c SS |
2210 | if (c == 0) |
2211 | break; | |
2212 | } | |
2213 | ||
2214 | /* Copy the string contents into a string inside GDB. */ | |
777ea8f1 | 2215 | str = (gdb_byte *) alloca (j + 1); |
7b92f6e1 MS |
2216 | if (j != 0) |
2217 | read_memory (tem, str, j); | |
c906108c SS |
2218 | str[j] = 0; |
2219 | ||
777ea8f1 | 2220 | printf_filtered (current_substring, (char *) str); |
c906108c SS |
2221 | } |
2222 | break; | |
2223 | case double_arg: | |
2224 | { | |
b806fb9a UW |
2225 | struct type *type = value_type (val_args[i]); |
2226 | DOUBLEST val; | |
2227 | int inv; | |
2228 | ||
2229 | /* If format string wants a float, unchecked-convert the value | |
2230 | to floating point of the same size. */ | |
2231 | type = float_type_from_length (current_gdbarch, type); | |
2232 | val = unpack_double (type, value_contents (val_args[i]), &inv); | |
2233 | if (inv) | |
2234 | error (_("Invalid floating value found in program.")); | |
2235 | ||
2236 | printf_filtered (current_substring, (double) val); | |
c906108c SS |
2237 | break; |
2238 | } | |
46e9880c DJ |
2239 | case long_double_arg: |
2240 | #ifdef HAVE_LONG_DOUBLE | |
2241 | { | |
b806fb9a UW |
2242 | struct type *type = value_type (val_args[i]); |
2243 | DOUBLEST val; | |
2244 | int inv; | |
2245 | ||
2246 | /* If format string wants a float, unchecked-convert the value | |
2247 | to floating point of the same size. */ | |
2248 | type = float_type_from_length (current_gdbarch, type); | |
2249 | val = unpack_double (type, value_contents (val_args[i]), &inv); | |
2250 | if (inv) | |
2251 | error (_("Invalid floating value found in program.")); | |
2252 | ||
2253 | printf_filtered (current_substring, (long double) val); | |
46e9880c DJ |
2254 | break; |
2255 | } | |
2256 | #else | |
2257 | error (_("long double not supported in printf")); | |
2258 | #endif | |
c906108c SS |
2259 | case long_long_arg: |
2260 | #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG) | |
2261 | { | |
2262 | long long val = value_as_long (val_args[i]); | |
2263 | printf_filtered (current_substring, val); | |
2264 | break; | |
2265 | } | |
2266 | #else | |
8a3fe4f8 | 2267 | error (_("long long not supported in printf")); |
c906108c SS |
2268 | #endif |
2269 | case int_arg: | |
2270 | { | |
46e9880c DJ |
2271 | int val = value_as_long (val_args[i]); |
2272 | printf_filtered (current_substring, val); | |
2273 | break; | |
2274 | } | |
2275 | case long_arg: | |
2276 | { | |
c906108c SS |
2277 | long val = value_as_long (val_args[i]); |
2278 | printf_filtered (current_substring, val); | |
2279 | break; | |
2280 | } | |
1a619819 | 2281 | |
0aea4bf3 LM |
2282 | /* Handles decimal floating values. */ |
2283 | case decfloat_arg: | |
1a619819 | 2284 | { |
0aea4bf3 | 2285 | const gdb_byte *param_ptr = value_contents (val_args[i]); |
1a619819 | 2286 | #if defined (PRINTF_HAS_DECFLOAT) |
0aea4bf3 LM |
2287 | /* If we have native support for Decimal floating |
2288 | printing, handle it here. */ | |
2289 | printf_filtered (current_substring, param_ptr); | |
1a619819 | 2290 | #else |
1a619819 LM |
2291 | |
2292 | /* As a workaround until vasprintf has native support for DFP | |
0aea4bf3 LM |
2293 | we convert the DFP values to string and print them using |
2294 | the %s format specifier. */ | |
2295 | ||
2296 | char *eos, *sos; | |
2297 | int nnull_chars = 0; | |
2298 | ||
2299 | /* Parameter data. */ | |
2300 | struct type *param_type = value_type (val_args[i]); | |
2301 | unsigned int param_len = TYPE_LENGTH (param_type); | |
2302 | ||
2303 | /* DFP output data. */ | |
2304 | struct value *dfp_value = NULL; | |
2305 | gdb_byte *dfp_ptr; | |
2306 | int dfp_len = 16; | |
2307 | gdb_byte dec[16]; | |
2308 | struct type *dfp_type = NULL; | |
2309 | char decstr[MAX_DECIMAL_STRING]; | |
1a619819 LM |
2310 | |
2311 | /* Points to the end of the string so that we can go back | |
0aea4bf3 | 2312 | and check for DFP length modifiers. */ |
1a619819 LM |
2313 | eos = current_substring + strlen (current_substring); |
2314 | ||
0aea4bf3 LM |
2315 | /* Look for the float/double format specifier. */ |
2316 | while (*eos != 'f' && *eos != 'e' && *eos != 'E' | |
2317 | && *eos != 'g' && *eos != 'G') | |
2318 | eos--; | |
2319 | ||
2320 | sos = eos; | |
2321 | ||
2322 | /* Search for the '%' char and extract the size and type of | |
2323 | the output decimal value based on its modifiers | |
2324 | (%Hf, %Df, %DDf). */ | |
2325 | while (*--sos != '%') | |
2326 | { | |
2327 | if (*sos == 'H') | |
2328 | { | |
2329 | dfp_len = 4; | |
2330 | dfp_type = builtin_type (current_gdbarch)->builtin_decfloat; | |
2331 | } | |
2332 | else if (*sos == 'D' && *(sos - 1) == 'D') | |
2333 | { | |
2334 | dfp_len = 16; | |
2335 | dfp_type = builtin_type (current_gdbarch)->builtin_declong; | |
2336 | sos--; | |
2337 | } | |
2338 | else | |
2339 | { | |
2340 | dfp_len = 8; | |
2341 | dfp_type = builtin_type (current_gdbarch)->builtin_decdouble; | |
2342 | } | |
2343 | } | |
2344 | ||
2345 | /* Replace %Hf, %Df and %DDf with %s's. */ | |
2346 | *++sos = 's'; | |
2347 | ||
2348 | /* Go through the whole format string and pull the correct | |
2349 | number of chars back to compensate for the change in the | |
2350 | format specifier. */ | |
2351 | while (nnull_chars < nargs - i) | |
2352 | { | |
2353 | if (*eos == '\0') | |
2354 | nnull_chars++; | |
2355 | ||
2356 | *++sos = *++eos; | |
2357 | } | |
2358 | ||
2359 | /* Conversion between different DFP types. */ | |
2360 | if (TYPE_CODE (param_type) == TYPE_CODE_DECFLOAT) | |
2361 | decimal_convert (param_ptr, param_len, dec, dfp_len); | |
2362 | else | |
2363 | /* If this is a non-trivial conversion, just output 0. | |
2364 | A correct converted value can be displayed by explicitly | |
2365 | casting to a DFP type. */ | |
2366 | decimal_from_string (dec, dfp_len, "0"); | |
2367 | ||
2368 | dfp_value = value_from_decfloat (dfp_type, dec); | |
2369 | ||
2370 | dfp_ptr = (gdb_byte *) value_contents (dfp_value); | |
2371 | ||
2372 | decimal_to_string (dfp_ptr, dfp_len, decstr); | |
1a619819 LM |
2373 | |
2374 | /* Print the DFP value. */ | |
2375 | printf_filtered (current_substring, decstr); | |
0aea4bf3 | 2376 | |
1a619819 LM |
2377 | break; |
2378 | #endif | |
2379 | } | |
2380 | ||
2025a643 DJ |
2381 | case ptr_arg: |
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 | char *p, *fmt, *fmt_p; | |
2389 | #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG) | |
2390 | long long val = value_as_long (val_args[i]); | |
2391 | #else | |
2392 | long val = value_as_long (val_args[i]); | |
2393 | #endif | |
2394 | ||
2395 | fmt = alloca (strlen (current_substring) + 5); | |
2396 | ||
2397 | /* Copy up to the leading %. */ | |
2398 | p = current_substring; | |
2399 | fmt_p = fmt; | |
2400 | while (*p) | |
2401 | { | |
2402 | int is_percent = (*p == '%'); | |
2403 | *fmt_p++ = *p++; | |
2404 | if (is_percent) | |
2405 | { | |
2406 | if (*p == '%') | |
2407 | *fmt_p++ = *p++; | |
2408 | else | |
2409 | break; | |
2410 | } | |
2411 | } | |
2412 | ||
2413 | if (val != 0) | |
2414 | *fmt_p++ = '#'; | |
2415 | ||
2416 | /* Copy any width. */ | |
2417 | while (*p >= '0' && *p < '9') | |
2418 | *fmt_p++ = *p++; | |
2419 | ||
2420 | gdb_assert (*p == 'p' && *(p + 1) == '\0'); | |
2421 | if (val != 0) | |
2422 | { | |
2423 | #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG) | |
2424 | *fmt_p++ = 'l'; | |
2425 | #endif | |
2426 | *fmt_p++ = 'l'; | |
2427 | *fmt_p++ = 'x'; | |
2428 | *fmt_p++ = '\0'; | |
2429 | printf_filtered (fmt, val); | |
2430 | } | |
2431 | else | |
2432 | { | |
2433 | *fmt_p++ = 's'; | |
2434 | *fmt_p++ = '\0'; | |
2435 | printf_filtered (fmt, "(nil)"); | |
2436 | } | |
2437 | ||
2438 | break; | |
2439 | } | |
675dcf4f MK |
2440 | default: |
2441 | internal_error (__FILE__, __LINE__, | |
2025a643 | 2442 | _("failed internal consistency check")); |
c906108c SS |
2443 | } |
2444 | /* Skip to the next substring. */ | |
2445 | current_substring += strlen (current_substring) + 1; | |
2446 | } | |
2447 | /* Print the portion of the format string after the last argument. */ | |
306d9ac5 | 2448 | puts_filtered (last_arg); |
c906108c SS |
2449 | } |
2450 | do_cleanups (old_cleanups); | |
2451 | } | |
c906108c | 2452 | |
c906108c | 2453 | void |
fba45db2 | 2454 | _initialize_printcmd (void) |
c906108c | 2455 | { |
c94fdfd0 EZ |
2456 | struct cmd_list_element *c; |
2457 | ||
c906108c SS |
2458 | current_display_number = -1; |
2459 | ||
a3247a22 PP |
2460 | observer_attach_solib_unloaded (clear_dangling_display_expressions); |
2461 | ||
c906108c | 2462 | add_info ("address", address_info, |
1bedd215 | 2463 | _("Describe where symbol SYM is stored.")); |
c906108c | 2464 | |
1bedd215 AC |
2465 | add_info ("symbol", sym_info, _("\ |
2466 | Describe what symbol is at location ADDR.\n\ | |
2467 | Only for symbols with fixed locations (global or static scope).")); | |
c906108c | 2468 | |
1bedd215 AC |
2469 | add_com ("x", class_vars, x_command, _("\ |
2470 | Examine memory: x/FMT ADDRESS.\n\ | |
c906108c SS |
2471 | ADDRESS is an expression for the memory address to examine.\n\ |
2472 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2473 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
1bedd215 AC |
2474 | t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n\ |
2475 | Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ | |
c906108c SS |
2476 | The specified number of objects of the specified size are printed\n\ |
2477 | according to the format.\n\n\ | |
2478 | Defaults for format and size letters are those previously used.\n\ | |
2479 | Default count is 1. Default address is following last thing printed\n\ | |
1bedd215 | 2480 | with this command or \"print\".")); |
c906108c | 2481 | |
c906108c SS |
2482 | #if 0 |
2483 | add_com ("whereis", class_vars, whereis_command, | |
1bedd215 | 2484 | _("Print line number and file of definition of variable.")); |
c906108c | 2485 | #endif |
c5aa993b | 2486 | |
1bedd215 AC |
2487 | add_info ("display", display_info, _("\ |
2488 | Expressions to display when program stops, with code numbers.")); | |
c906108c | 2489 | |
1a966eab AC |
2490 | add_cmd ("undisplay", class_vars, undisplay_command, _("\ |
2491 | Cancel some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2492 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2493 | No argument means cancel all automatic-display expressions.\n\ | |
2494 | \"delete display\" has the same effect as this command.\n\ | |
1a966eab | 2495 | Do \"info display\" to see current list of code numbers."), |
c5aa993b | 2496 | &cmdlist); |
c906108c | 2497 | |
1bedd215 AC |
2498 | add_com ("display", class_vars, display_command, _("\ |
2499 | Print value of expression EXP each time the program stops.\n\ | |
c906108c SS |
2500 | /FMT may be used before EXP as in the \"print\" command.\n\ |
2501 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2502 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2503 | and examining is done as in the \"x\" command.\n\n\ | |
2504 | With no argument, display all currently requested auto-display expressions.\n\ | |
1bedd215 | 2505 | Use \"undisplay\" to cancel display requests previously made.")); |
c906108c | 2506 | |
1a966eab AC |
2507 | add_cmd ("display", class_vars, enable_display, _("\ |
2508 | Enable some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2509 | Arguments are the code numbers of the expressions to resume displaying.\n\ |
2510 | No argument means enable all automatic-display expressions.\n\ | |
1a966eab | 2511 | Do \"info display\" to see current list of code numbers."), &enablelist); |
c906108c | 2512 | |
1a966eab AC |
2513 | add_cmd ("display", class_vars, disable_display_command, _("\ |
2514 | Disable some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2515 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2516 | No argument means disable all automatic-display expressions.\n\ | |
1a966eab | 2517 | Do \"info display\" to see current list of code numbers."), &disablelist); |
c906108c | 2518 | |
1a966eab AC |
2519 | add_cmd ("display", class_vars, undisplay_command, _("\ |
2520 | Cancel some expressions to be displayed when program stops.\n\ | |
c906108c SS |
2521 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
2522 | No argument means cancel all automatic-display expressions.\n\ | |
1a966eab | 2523 | Do \"info display\" to see current list of code numbers."), &deletelist); |
c906108c | 2524 | |
1bedd215 AC |
2525 | add_com ("printf", class_vars, printf_command, _("\ |
2526 | printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
2527 | This is useful for formatted output in user-defined commands.")); | |
c906108c | 2528 | |
1bedd215 AC |
2529 | add_com ("output", class_vars, output_command, _("\ |
2530 | Like \"print\" but don't put in value history and don't print newline.\n\ | |
2531 | This is useful in user-defined commands.")); | |
c906108c | 2532 | |
1bedd215 AC |
2533 | add_prefix_cmd ("set", class_vars, set_command, _("\ |
2534 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2535 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2536 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2537 | with $), a register (a few standard names starting with $), or an actual\n\ | |
1bedd215 AC |
2538 | variable in the program being debugged. EXP is any valid expression.\n\ |
2539 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
2540 | \n\ | |
2541 | With a subcommand, this command modifies parts of the gdb environment.\n\ | |
2542 | You can see these environment settings with the \"show\" command."), | |
c5aa993b | 2543 | &setlist, "set ", 1, &cmdlist); |
c906108c | 2544 | if (dbx_commands) |
1bedd215 AC |
2545 | add_com ("assign", class_vars, set_command, _("\ |
2546 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2547 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2548 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2549 | with $), a register (a few standard names starting with $), or an actual\n\ | |
1bedd215 AC |
2550 | variable in the program being debugged. EXP is any valid expression.\n\ |
2551 | Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
c906108c | 2552 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
1bedd215 | 2553 | You can see these environment settings with the \"show\" command.")); |
c906108c SS |
2554 | |
2555 | /* "call" is the same as "set", but handy for dbx users to call fns. */ | |
1bedd215 AC |
2556 | c = add_com ("call", class_vars, call_command, _("\ |
2557 | Call a function in the program.\n\ | |
c906108c SS |
2558 | The argument is the function name and arguments, in the notation of the\n\ |
2559 | current working language. The result is printed and saved in the value\n\ | |
1bedd215 | 2560 | history, if it is not void.")); |
65d12d83 | 2561 | set_cmd_completer (c, expression_completer); |
c906108c | 2562 | |
1a966eab AC |
2563 | add_cmd ("variable", class_vars, set_command, _("\ |
2564 | Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
c906108c SS |
2565 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2566 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2567 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2568 | variable in the program being debugged. EXP is any valid expression.\n\ | |
1a966eab | 2569 | This may usually be abbreviated to simply \"set\"."), |
c5aa993b | 2570 | &setlist); |
c906108c | 2571 | |
1bedd215 AC |
2572 | c = add_com ("print", class_vars, print_command, _("\ |
2573 | Print value of expression EXP.\n\ | |
c906108c SS |
2574 | Variables accessible are those of the lexical environment of the selected\n\ |
2575 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2576 | \n\ | |
2577 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2578 | $$NUM refers to NUM'th value back from the last one.\n\ | |
1bedd215 AC |
2579 | Names starting with $ refer to registers (with the values they would have\n\ |
2580 | if the program were to return to the stack frame now selected, restoring\n\ | |
c906108c SS |
2581 | all registers saved by frames farther in) or else to debugger\n\ |
2582 | \"convenience\" variables (any such name not a known register).\n\ | |
1bedd215 AC |
2583 | Use assignment expressions to give values to convenience variables.\n\ |
2584 | \n\ | |
c906108c SS |
2585 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ |
2586 | @ is a binary operator for treating consecutive data objects\n\ | |
2587 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2588 | element is FOO, whose second element is stored in the space following\n\ | |
2589 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
1bedd215 AC |
2590 | resides in memory.\n\ |
2591 | \n\ | |
c906108c | 2592 | EXP may be preceded with /FMT, where FMT is a format letter\n\ |
1bedd215 | 2593 | but no count or size letter (see \"x\" command).")); |
65d12d83 | 2594 | set_cmd_completer (c, expression_completer); |
c906108c SS |
2595 | add_com_alias ("p", "print", class_vars, 1); |
2596 | ||
1bedd215 AC |
2597 | c = add_com ("inspect", class_vars, inspect_command, _("\ |
2598 | Same as \"print\" command, except that if you are running in the epoch\n\ | |
2599 | environment, the value is printed in its own window.")); | |
65d12d83 | 2600 | set_cmd_completer (c, expression_completer); |
c906108c | 2601 | |
35096d9d AC |
2602 | add_setshow_uinteger_cmd ("max-symbolic-offset", no_class, |
2603 | &max_symbolic_offset, _("\ | |
2604 | Set the largest offset that will be printed in <symbol+1234> form."), _("\ | |
2605 | Show the largest offset that will be printed in <symbol+1234> form."), NULL, | |
2606 | NULL, | |
920d2a44 | 2607 | show_max_symbolic_offset, |
35096d9d | 2608 | &setprintlist, &showprintlist); |
5bf193a2 AC |
2609 | add_setshow_boolean_cmd ("symbol-filename", no_class, |
2610 | &print_symbol_filename, _("\ | |
2611 | Set printing of source filename and line number with <symbol>."), _("\ | |
2612 | Show printing of source filename and line number with <symbol>."), NULL, | |
2613 | NULL, | |
920d2a44 | 2614 | show_print_symbol_filename, |
5bf193a2 | 2615 | &setprintlist, &showprintlist); |
c906108c SS |
2616 | |
2617 | /* For examine/instruction a single byte quantity is specified as | |
2618 | the data. This avoids problems with value_at_lazy() requiring a | |
2619 | valid data type (and rejecting VOID). */ | |
2620 | examine_i_type = init_type (TYPE_CODE_INT, 1, 0, "examine_i_type", NULL); | |
2621 | ||
2622 | examine_b_type = init_type (TYPE_CODE_INT, 1, 0, "examine_b_type", NULL); | |
2623 | examine_h_type = init_type (TYPE_CODE_INT, 2, 0, "examine_h_type", NULL); | |
2624 | examine_w_type = init_type (TYPE_CODE_INT, 4, 0, "examine_w_type", NULL); | |
2625 | examine_g_type = init_type (TYPE_CODE_INT, 8, 0, "examine_g_type", NULL); | |
2626 | ||
2627 | } |