Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Print values for GNU debugger GDB. |
e2ad119d | 2 | |
8926118c | 3 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, |
406fc7fb | 4 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software |
8926118c | 5 | 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 | |
11 | the Free Software Foundation; either version 2 of the License, or | |
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 JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | #include "defs.h" | |
25 | #include "gdb_string.h" | |
26 | #include "frame.h" | |
27 | #include "symtab.h" | |
28 | #include "gdbtypes.h" | |
29 | #include "value.h" | |
30 | #include "language.h" | |
31 | #include "expression.h" | |
32 | #include "gdbcore.h" | |
33 | #include "gdbcmd.h" | |
34 | #include "target.h" | |
35 | #include "breakpoint.h" | |
36 | #include "demangle.h" | |
37 | #include "valprint.h" | |
38 | #include "annotate.h" | |
c5aa993b JM |
39 | #include "symfile.h" /* for overlay functions */ |
40 | #include "objfiles.h" /* ditto */ | |
c94fdfd0 | 41 | #include "completer.h" /* for completion functions */ |
8b93c638 | 42 | #include "ui-out.h" |
261397f8 | 43 | #include "gdb_assert.h" |
fe898f56 | 44 | #include "block.h" |
92bf2b80 | 45 | #include "disasm.h" |
c906108c | 46 | |
6a83354a AC |
47 | #ifdef TUI |
48 | #include "tui/tui.h" /* For tui_active et.al. */ | |
49 | #endif | |
50 | ||
c906108c SS |
51 | extern int asm_demangle; /* Whether to demangle syms in asm printouts */ |
52 | extern int addressprint; /* Whether to print hex addresses in HLL " */ | |
53 | ||
54 | struct format_data | |
c5aa993b JM |
55 | { |
56 | int count; | |
57 | char format; | |
58 | char size; | |
59 | }; | |
c906108c SS |
60 | |
61 | /* Last specified output format. */ | |
62 | ||
63 | static char last_format = 'x'; | |
64 | ||
65 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
66 | ||
67 | static char last_size = 'w'; | |
68 | ||
69 | /* Default address to examine next. */ | |
70 | ||
71 | static CORE_ADDR next_address; | |
72 | ||
73 | /* Default section to examine next. */ | |
74 | ||
75 | static asection *next_section; | |
76 | ||
77 | /* Last address examined. */ | |
78 | ||
79 | static CORE_ADDR last_examine_address; | |
80 | ||
81 | /* Contents of last address examined. | |
82 | This is not valid past the end of the `x' command! */ | |
83 | ||
3d6d86c6 | 84 | static struct value *last_examine_value; |
c906108c SS |
85 | |
86 | /* Largest offset between a symbolic value and an address, that will be | |
87 | printed as `0x1234 <symbol+offset>'. */ | |
88 | ||
89 | static unsigned int max_symbolic_offset = UINT_MAX; | |
90 | ||
91 | /* Append the source filename and linenumber of the symbol when | |
92 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
93 | static int print_symbol_filename = 0; | |
94 | ||
95 | /* Number of auto-display expression currently being displayed. | |
96 | So that we can disable it if we get an error or a signal within it. | |
97 | -1 when not doing one. */ | |
98 | ||
99 | int current_display_number; | |
100 | ||
101 | /* Flag to low-level print routines that this value is being printed | |
102 | in an epoch window. We'd like to pass this as a parameter, but | |
103 | every routine would need to take it. Perhaps we can encapsulate | |
104 | this in the I/O stream once we have GNU stdio. */ | |
105 | ||
106 | int inspect_it = 0; | |
107 | ||
108 | struct display | |
c5aa993b JM |
109 | { |
110 | /* Chain link to next auto-display item. */ | |
111 | struct display *next; | |
112 | /* Expression to be evaluated and displayed. */ | |
113 | struct expression *exp; | |
114 | /* Item number of this auto-display item. */ | |
115 | int number; | |
116 | /* Display format specified. */ | |
117 | struct format_data format; | |
118 | /* Innermost block required by this expression when evaluated */ | |
119 | struct block *block; | |
120 | /* Status of this display (enabled or disabled) */ | |
b5de0fa7 | 121 | int enabled_p; |
c5aa993b | 122 | }; |
c906108c SS |
123 | |
124 | /* Chain of expressions whose values should be displayed | |
125 | automatically each time the program stops. */ | |
126 | ||
127 | static struct display *display_chain; | |
128 | ||
129 | static int display_number; | |
130 | ||
131 | /* Prototypes for exported functions. */ | |
132 | ||
a14ed312 | 133 | void output_command (char *, int); |
c906108c | 134 | |
a14ed312 | 135 | void _initialize_printcmd (void); |
c906108c SS |
136 | |
137 | /* Prototypes for local functions. */ | |
138 | ||
a14ed312 | 139 | static void delete_display (int); |
c906108c | 140 | |
a14ed312 | 141 | static void enable_display (char *, int); |
c906108c | 142 | |
a14ed312 | 143 | static void disable_display_command (char *, int); |
c906108c | 144 | |
a14ed312 | 145 | static void printf_command (char *, int); |
c906108c | 146 | |
a14ed312 | 147 | static void display_info (char *, int); |
c906108c | 148 | |
a14ed312 | 149 | static void do_one_display (struct display *); |
c906108c | 150 | |
a14ed312 | 151 | static void undisplay_command (char *, int); |
c906108c | 152 | |
a14ed312 | 153 | static void free_display (struct display *); |
c906108c | 154 | |
a14ed312 | 155 | static void display_command (char *, int); |
c906108c | 156 | |
a14ed312 | 157 | void x_command (char *, int); |
c906108c | 158 | |
a14ed312 | 159 | static void address_info (char *, int); |
c906108c | 160 | |
a14ed312 | 161 | static void set_command (char *, int); |
c906108c | 162 | |
a14ed312 | 163 | static void call_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static void inspect_command (char *, int); |
c906108c | 166 | |
a14ed312 | 167 | static void print_command (char *, int); |
c906108c | 168 | |
a14ed312 | 169 | static void print_command_1 (char *, int, int); |
c906108c | 170 | |
a14ed312 | 171 | static void validate_format (struct format_data, char *); |
c906108c | 172 | |
a14ed312 KB |
173 | static void do_examine (struct format_data, CORE_ADDR addr, |
174 | asection * section); | |
c906108c | 175 | |
3d6d86c6 | 176 | static void print_formatted (struct value *, int, int, struct ui_file *); |
c906108c | 177 | |
a14ed312 | 178 | static struct format_data decode_format (char **, int, int); |
c906108c | 179 | |
a14ed312 | 180 | static void sym_info (char *, int); |
c906108c | 181 | \f |
c5aa993b | 182 | |
c906108c SS |
183 | /* Decode a format specification. *STRING_PTR should point to it. |
184 | OFORMAT and OSIZE are used as defaults for the format and size | |
185 | if none are given in the format specification. | |
186 | If OSIZE is zero, then the size field of the returned value | |
187 | should be set only if a size is explicitly specified by the | |
188 | user. | |
189 | The structure returned describes all the data | |
190 | found in the specification. In addition, *STRING_PTR is advanced | |
191 | past the specification and past all whitespace following it. */ | |
192 | ||
193 | static struct format_data | |
fba45db2 | 194 | decode_format (char **string_ptr, int oformat, int osize) |
c906108c SS |
195 | { |
196 | struct format_data val; | |
52f0bd74 | 197 | char *p = *string_ptr; |
c906108c SS |
198 | |
199 | val.format = '?'; | |
200 | val.size = '?'; | |
201 | val.count = 1; | |
202 | ||
203 | if (*p >= '0' && *p <= '9') | |
204 | val.count = atoi (p); | |
c5aa993b JM |
205 | while (*p >= '0' && *p <= '9') |
206 | p++; | |
c906108c SS |
207 | |
208 | /* Now process size or format letters that follow. */ | |
209 | ||
210 | while (1) | |
211 | { | |
212 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
213 | val.size = *p++; | |
214 | else if (*p >= 'a' && *p <= 'z') | |
215 | val.format = *p++; | |
216 | else | |
217 | break; | |
218 | } | |
219 | ||
c5aa993b JM |
220 | while (*p == ' ' || *p == '\t') |
221 | p++; | |
c906108c SS |
222 | *string_ptr = p; |
223 | ||
224 | /* Set defaults for format and size if not specified. */ | |
225 | if (val.format == '?') | |
226 | { | |
227 | if (val.size == '?') | |
228 | { | |
229 | /* Neither has been specified. */ | |
230 | val.format = oformat; | |
231 | val.size = osize; | |
232 | } | |
233 | else | |
234 | /* If a size is specified, any format makes a reasonable | |
235 | default except 'i'. */ | |
236 | val.format = oformat == 'i' ? 'x' : oformat; | |
237 | } | |
238 | else if (val.size == '?') | |
239 | switch (val.format) | |
240 | { | |
241 | case 'a': | |
242 | case 's': | |
243 | /* Pick the appropriate size for an address. */ | |
244 | if (TARGET_PTR_BIT == 64) | |
245 | val.size = osize ? 'g' : osize; | |
246 | else if (TARGET_PTR_BIT == 32) | |
247 | val.size = osize ? 'w' : osize; | |
248 | else if (TARGET_PTR_BIT == 16) | |
249 | val.size = osize ? 'h' : osize; | |
250 | else | |
251 | /* Bad value for TARGET_PTR_BIT */ | |
e1e9e218 | 252 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
253 | break; |
254 | case 'f': | |
255 | /* Floating point has to be word or giantword. */ | |
256 | if (osize == 'w' || osize == 'g') | |
257 | val.size = osize; | |
258 | else | |
259 | /* Default it to giantword if the last used size is not | |
260 | appropriate. */ | |
261 | val.size = osize ? 'g' : osize; | |
262 | break; | |
263 | case 'c': | |
264 | /* Characters default to one byte. */ | |
265 | val.size = osize ? 'b' : osize; | |
266 | break; | |
267 | default: | |
268 | /* The default is the size most recently specified. */ | |
269 | val.size = osize; | |
270 | } | |
271 | ||
272 | return val; | |
273 | } | |
274 | \f | |
2acceee2 | 275 | /* Print value VAL on stream according to FORMAT, a letter or 0. |
c906108c SS |
276 | Do not end with a newline. |
277 | 0 means print VAL according to its own type. | |
278 | SIZE is the letter for the size of datum being printed. | |
279 | This is used to pad hex numbers so they line up. */ | |
280 | ||
281 | static void | |
aa1ee363 | 282 | print_formatted (struct value *val, int format, int size, |
fba45db2 | 283 | struct ui_file *stream) |
c906108c SS |
284 | { |
285 | struct type *type = check_typedef (VALUE_TYPE (val)); | |
286 | int len = TYPE_LENGTH (type); | |
287 | ||
288 | if (VALUE_LVAL (val) == lval_memory) | |
289 | { | |
290 | next_address = VALUE_ADDRESS (val) + len; | |
291 | next_section = VALUE_BFD_SECTION (val); | |
292 | } | |
293 | ||
294 | switch (format) | |
295 | { | |
296 | case 's': | |
297 | /* FIXME: Need to handle wchar_t's here... */ | |
298 | next_address = VALUE_ADDRESS (val) | |
2acceee2 | 299 | + val_print_string (VALUE_ADDRESS (val), -1, 1, stream); |
c906108c SS |
300 | next_section = VALUE_BFD_SECTION (val); |
301 | break; | |
302 | ||
303 | case 'i': | |
304 | /* The old comment says | |
c5aa993b JM |
305 | "Force output out, print_insn not using _filtered". |
306 | I'm not completely sure what that means, I suspect most print_insn | |
307 | now do use _filtered, so I guess it's obsolete. | |
308 | --Yes, it does filter now, and so this is obsolete. -JB */ | |
c906108c SS |
309 | |
310 | /* We often wrap here if there are long symbolic names. */ | |
311 | wrap_here (" "); | |
312 | next_address = VALUE_ADDRESS (val) | |
92bf2b80 | 313 | + gdb_print_insn (VALUE_ADDRESS (val), stream); |
c906108c SS |
314 | next_section = VALUE_BFD_SECTION (val); |
315 | break; | |
316 | ||
317 | default: | |
318 | if (format == 0 | |
319 | || TYPE_CODE (type) == TYPE_CODE_ARRAY | |
320 | || TYPE_CODE (type) == TYPE_CODE_STRING | |
321 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
5c4e30ca DC |
322 | || TYPE_CODE (type) == TYPE_CODE_UNION |
323 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
c5aa993b JM |
324 | /* If format is 0, use the 'natural' format for |
325 | * that type of value. If the type is non-scalar, | |
326 | * we have to use language rules to print it as | |
327 | * a series of scalars. | |
328 | */ | |
2acceee2 | 329 | value_print (val, stream, format, Val_pretty_default); |
c906108c | 330 | else |
c5aa993b JM |
331 | /* User specified format, so don't look to the |
332 | * the type to tell us what to do. | |
333 | */ | |
c906108c | 334 | print_scalar_formatted (VALUE_CONTENTS (val), type, |
2acceee2 | 335 | format, size, stream); |
c906108c SS |
336 | } |
337 | } | |
338 | ||
339 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, | |
340 | according to letters FORMAT and SIZE on STREAM. | |
341 | FORMAT may not be zero. Formats s and i are not supported at this level. | |
342 | ||
343 | This is how the elements of an array or structure are printed | |
344 | with a format. */ | |
345 | ||
346 | void | |
a2867626 | 347 | print_scalar_formatted (void *valaddr, struct type *type, int format, int size, |
fba45db2 | 348 | struct ui_file *stream) |
c906108c SS |
349 | { |
350 | LONGEST val_long; | |
351 | unsigned int len = TYPE_LENGTH (type); | |
352 | ||
353 | if (len > sizeof (LONGEST) | |
354 | && (format == 't' | |
355 | || format == 'c' | |
356 | || format == 'o' | |
357 | || format == 'u' | |
358 | || format == 'd' | |
359 | || format == 'x')) | |
360 | { | |
c5aa993b JM |
361 | if (!TYPE_UNSIGNED (type) |
362 | || !extract_long_unsigned_integer (valaddr, len, &val_long)) | |
c906108c SS |
363 | { |
364 | /* We can't print it normally, but we can print it in hex. | |
365 | Printing it in the wrong radix is more useful than saying | |
366 | "use /x, you dummy". */ | |
367 | /* FIXME: we could also do octal or binary if that was the | |
368 | desired format. */ | |
369 | /* FIXME: we should be using the size field to give us a | |
370 | minimum field width to print. */ | |
371 | ||
c5aa993b JM |
372 | if (format == 'o') |
373 | print_octal_chars (stream, valaddr, len); | |
374 | else if (format == 'd') | |
375 | print_decimal_chars (stream, valaddr, len); | |
376 | else if (format == 't') | |
377 | print_binary_chars (stream, valaddr, len); | |
378 | else | |
379 | /* replace with call to print_hex_chars? Looks | |
380 | like val_print_type_code_int is redoing | |
381 | work. - edie */ | |
c906108c | 382 | |
c5aa993b | 383 | val_print_type_code_int (type, valaddr, stream); |
c906108c SS |
384 | |
385 | return; | |
386 | } | |
387 | ||
388 | /* If we get here, extract_long_unsigned_integer set val_long. */ | |
389 | } | |
390 | else if (format != 'f') | |
391 | val_long = unpack_long (type, valaddr); | |
392 | ||
ef166cf4 | 393 | /* If the value is a pointer, and pointers and addresses are not the |
d0aee0c4 FF |
394 | same, then at this point, the value's length (in target bytes) is |
395 | TARGET_ADDR_BIT/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */ | |
ef166cf4 | 396 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
d0aee0c4 | 397 | len = TARGET_ADDR_BIT / TARGET_CHAR_BIT; |
ef166cf4 | 398 | |
c906108c SS |
399 | /* If we are printing it as unsigned, truncate it in case it is actually |
400 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
401 | (if shorts are 16 bits) instead of 4294967295). */ | |
402 | if (format != 'd') | |
403 | { | |
404 | if (len < sizeof (LONGEST)) | |
405 | val_long &= ((LONGEST) 1 << HOST_CHAR_BIT * len) - 1; | |
406 | } | |
407 | ||
408 | switch (format) | |
409 | { | |
410 | case 'x': | |
411 | if (!size) | |
412 | { | |
413 | /* no size specified, like in print. Print varying # of digits. */ | |
414 | print_longest (stream, 'x', 1, val_long); | |
415 | } | |
416 | else | |
417 | switch (size) | |
418 | { | |
419 | case 'b': | |
420 | case 'h': | |
421 | case 'w': | |
422 | case 'g': | |
423 | print_longest (stream, size, 1, val_long); | |
424 | break; | |
425 | default: | |
426 | error ("Undefined output size \"%c\".", size); | |
427 | } | |
428 | break; | |
429 | ||
430 | case 'd': | |
431 | print_longest (stream, 'd', 1, val_long); | |
432 | break; | |
433 | ||
434 | case 'u': | |
435 | print_longest (stream, 'u', 0, val_long); | |
436 | break; | |
437 | ||
438 | case 'o': | |
439 | if (val_long) | |
440 | print_longest (stream, 'o', 1, val_long); | |
441 | else | |
442 | fprintf_filtered (stream, "0"); | |
443 | break; | |
444 | ||
445 | case 'a': | |
593de6a6 | 446 | { |
593de6a6 | 447 | CORE_ADDR addr = unpack_pointer (type, valaddr); |
593de6a6 PS |
448 | print_address (addr, stream); |
449 | } | |
c906108c SS |
450 | break; |
451 | ||
452 | case 'c': | |
9e0b60a8 JM |
453 | value_print (value_from_longest (builtin_type_true_char, val_long), |
454 | stream, 0, Val_pretty_default); | |
c906108c SS |
455 | break; |
456 | ||
457 | case 'f': | |
f4697836 | 458 | if (len == TYPE_LENGTH (builtin_type_float)) |
664cccae | 459 | type = builtin_type_float; |
f4697836 | 460 | else if (len == TYPE_LENGTH (builtin_type_double)) |
664cccae | 461 | type = builtin_type_double; |
f4697836 JB |
462 | else if (len == TYPE_LENGTH (builtin_type_long_double)) |
463 | type = builtin_type_long_double; | |
c906108c SS |
464 | print_floating (valaddr, type, stream); |
465 | break; | |
466 | ||
467 | case 0: | |
e1e9e218 | 468 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
469 | |
470 | case 't': | |
471 | /* Binary; 't' stands for "two". */ | |
472 | { | |
c5aa993b JM |
473 | char bits[8 * (sizeof val_long) + 1]; |
474 | char buf[8 * (sizeof val_long) + 32]; | |
c906108c SS |
475 | char *cp = bits; |
476 | int width; | |
477 | ||
c5aa993b JM |
478 | if (!size) |
479 | width = 8 * (sizeof val_long); | |
480 | else | |
481 | switch (size) | |
c906108c SS |
482 | { |
483 | case 'b': | |
484 | width = 8; | |
485 | break; | |
486 | case 'h': | |
487 | width = 16; | |
488 | break; | |
489 | case 'w': | |
490 | width = 32; | |
491 | break; | |
492 | case 'g': | |
493 | width = 64; | |
494 | break; | |
495 | default: | |
496 | error ("Undefined output size \"%c\".", size); | |
497 | } | |
498 | ||
c5aa993b JM |
499 | bits[width] = '\0'; |
500 | while (width-- > 0) | |
501 | { | |
502 | bits[width] = (val_long & 1) ? '1' : '0'; | |
503 | val_long >>= 1; | |
504 | } | |
c906108c SS |
505 | if (!size) |
506 | { | |
507 | while (*cp && *cp == '0') | |
508 | cp++; | |
509 | if (*cp == '\0') | |
510 | cp--; | |
511 | } | |
c5aa993b | 512 | strcpy (buf, local_binary_format_prefix ()); |
c906108c | 513 | strcat (buf, cp); |
c5aa993b | 514 | strcat (buf, local_binary_format_suffix ()); |
306d9ac5 | 515 | fputs_filtered (buf, stream); |
c906108c SS |
516 | } |
517 | break; | |
518 | ||
519 | default: | |
520 | error ("Undefined output format \"%c\".", format); | |
521 | } | |
522 | } | |
523 | ||
524 | /* Specify default address for `x' command. | |
525 | `info lines' uses this. */ | |
526 | ||
527 | void | |
fba45db2 | 528 | set_next_address (CORE_ADDR addr) |
c906108c SS |
529 | { |
530 | next_address = addr; | |
531 | ||
532 | /* Make address available to the user as $_. */ | |
533 | set_internalvar (lookup_internalvar ("_"), | |
4478b372 JB |
534 | value_from_pointer (lookup_pointer_type (builtin_type_void), |
535 | addr)); | |
c906108c SS |
536 | } |
537 | ||
538 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
539 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
540 | Optionally also print source file and line number, if available. | |
541 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
542 | or to interpret it as a possible C++ name and convert it back to source | |
543 | form. However note that DO_DEMANGLE can be overridden by the specific | |
544 | settings of the demangle and asm_demangle variables. */ | |
545 | ||
546 | void | |
fba45db2 KB |
547 | print_address_symbolic (CORE_ADDR addr, struct ui_file *stream, int do_demangle, |
548 | char *leadin) | |
dfcd3bfb JM |
549 | { |
550 | char *name = NULL; | |
551 | char *filename = NULL; | |
552 | int unmapped = 0; | |
553 | int offset = 0; | |
554 | int line = 0; | |
555 | ||
2f9429ae AC |
556 | /* throw away both name and filename */ |
557 | struct cleanup *cleanup_chain = make_cleanup (free_current_contents, &name); | |
558 | make_cleanup (free_current_contents, &filename); | |
dfcd3bfb JM |
559 | |
560 | if (build_address_symbolic (addr, do_demangle, &name, &offset, &filename, &line, &unmapped)) | |
2f9429ae AC |
561 | { |
562 | do_cleanups (cleanup_chain); | |
563 | return; | |
564 | } | |
dfcd3bfb JM |
565 | |
566 | fputs_filtered (leadin, stream); | |
567 | if (unmapped) | |
568 | fputs_filtered ("<*", stream); | |
569 | else | |
570 | fputs_filtered ("<", stream); | |
571 | fputs_filtered (name, stream); | |
572 | if (offset != 0) | |
573 | fprintf_filtered (stream, "+%u", (unsigned int) offset); | |
574 | ||
575 | /* Append source filename and line number if desired. Give specific | |
576 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
577 | if (print_symbol_filename && filename != NULL) | |
578 | { | |
579 | if (line != -1) | |
580 | fprintf_filtered (stream, " at %s:%d", filename, line); | |
581 | else | |
582 | fprintf_filtered (stream, " in %s", filename); | |
583 | } | |
584 | if (unmapped) | |
585 | fputs_filtered ("*>", stream); | |
586 | else | |
587 | fputs_filtered (">", stream); | |
588 | ||
589 | do_cleanups (cleanup_chain); | |
590 | } | |
591 | ||
592 | /* Given an address ADDR return all the elements needed to print the | |
593 | address in a symbolic form. NAME can be mangled or not depending | |
594 | on DO_DEMANGLE (and also on the asm_demangle global variable, | |
595 | manipulated via ''set print asm-demangle''). Return 0 in case of | |
596 | success, when all the info in the OUT paramters is valid. Return 1 | |
597 | otherwise. */ | |
598 | int | |
599 | build_address_symbolic (CORE_ADDR addr, /* IN */ | |
600 | int do_demangle, /* IN */ | |
601 | char **name, /* OUT */ | |
602 | int *offset, /* OUT */ | |
603 | char **filename, /* OUT */ | |
604 | int *line, /* OUT */ | |
605 | int *unmapped) /* OUT */ | |
c906108c SS |
606 | { |
607 | struct minimal_symbol *msymbol; | |
608 | struct symbol *symbol; | |
609 | struct symtab *symtab = 0; | |
610 | CORE_ADDR name_location = 0; | |
c906108c | 611 | asection *section = 0; |
dfcd3bfb JM |
612 | char *name_temp = ""; |
613 | ||
614 | /* Let's say it is unmapped. */ | |
615 | *unmapped = 0; | |
c906108c | 616 | |
dfcd3bfb JM |
617 | /* Determine if the address is in an overlay, and whether it is |
618 | mapped. */ | |
c906108c SS |
619 | if (overlay_debugging) |
620 | { | |
621 | section = find_pc_overlay (addr); | |
622 | if (pc_in_unmapped_range (addr, section)) | |
623 | { | |
dfcd3bfb | 624 | *unmapped = 1; |
c906108c SS |
625 | addr = overlay_mapped_address (addr, section); |
626 | } | |
627 | } | |
628 | ||
c906108c SS |
629 | /* First try to find the address in the symbol table, then |
630 | in the minsyms. Take the closest one. */ | |
631 | ||
632 | /* This is defective in the sense that it only finds text symbols. So | |
633 | really this is kind of pointless--we should make sure that the | |
634 | minimal symbols have everything we need (by changing that we could | |
635 | save some memory, but for many debug format--ELF/DWARF or | |
636 | anything/stabs--it would be inconvenient to eliminate those minimal | |
637 | symbols anyway). */ | |
638 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section); | |
639 | symbol = find_pc_sect_function (addr, section); | |
640 | ||
641 | if (symbol) | |
642 | { | |
643 | name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol)); | |
406fc7fb | 644 | if (do_demangle || asm_demangle) |
de5ad195 | 645 | name_temp = SYMBOL_PRINT_NAME (symbol); |
c906108c | 646 | else |
22abf04a | 647 | name_temp = DEPRECATED_SYMBOL_NAME (symbol); |
c906108c SS |
648 | } |
649 | ||
650 | if (msymbol != NULL) | |
651 | { | |
652 | if (SYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL) | |
653 | { | |
654 | /* The msymbol is closer to the address than the symbol; | |
655 | use the msymbol instead. */ | |
656 | symbol = 0; | |
657 | symtab = 0; | |
658 | name_location = SYMBOL_VALUE_ADDRESS (msymbol); | |
406fc7fb | 659 | if (do_demangle || asm_demangle) |
de5ad195 | 660 | name_temp = SYMBOL_PRINT_NAME (msymbol); |
c906108c | 661 | else |
22abf04a | 662 | name_temp = DEPRECATED_SYMBOL_NAME (msymbol); |
c906108c SS |
663 | } |
664 | } | |
665 | if (symbol == NULL && msymbol == NULL) | |
dfcd3bfb | 666 | return 1; |
c906108c | 667 | |
c906108c SS |
668 | /* If the nearest symbol is too far away, don't print anything symbolic. */ |
669 | ||
670 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
671 | CORE_ADDR. But when we detect unsigned wraparound in the | |
672 | CORE_ADDR math, we ignore this test and print the offset, | |
673 | because addr+max_symbolic_offset has wrapped through the end | |
674 | of the address space back to the beginning, giving bogus comparison. */ | |
675 | if (addr > name_location + max_symbolic_offset | |
676 | && name_location + max_symbolic_offset > name_location) | |
dfcd3bfb | 677 | return 1; |
c906108c | 678 | |
dfcd3bfb JM |
679 | *offset = addr - name_location; |
680 | ||
681 | *name = xstrdup (name_temp); | |
c906108c | 682 | |
c906108c SS |
683 | if (print_symbol_filename) |
684 | { | |
685 | struct symtab_and_line sal; | |
686 | ||
687 | sal = find_pc_sect_line (addr, section, 0); | |
688 | ||
689 | if (sal.symtab) | |
dfcd3bfb JM |
690 | { |
691 | *filename = xstrdup (sal.symtab->filename); | |
692 | *line = sal.line; | |
693 | } | |
c906108c | 694 | else if (symtab && symbol && symbol->line) |
dfcd3bfb JM |
695 | { |
696 | *filename = xstrdup (symtab->filename); | |
697 | *line = symbol->line; | |
698 | } | |
c906108c | 699 | else if (symtab) |
dfcd3bfb JM |
700 | { |
701 | *filename = xstrdup (symtab->filename); | |
702 | *line = -1; | |
703 | } | |
c906108c | 704 | } |
dfcd3bfb | 705 | return 0; |
c906108c SS |
706 | } |
707 | ||
c906108c SS |
708 | /* Print address ADDR on STREAM. USE_LOCAL means the same thing as for |
709 | print_longest. */ | |
710 | void | |
fba45db2 | 711 | print_address_numeric (CORE_ADDR addr, int use_local, struct ui_file *stream) |
c906108c | 712 | { |
c0d8fd9a | 713 | /* Truncate address to the size of a target address, avoiding shifts |
e2ad119d | 714 | larger or equal than the width of a CORE_ADDR. The local |
c0d8fd9a MS |
715 | variable ADDR_BIT stops the compiler reporting a shift overflow |
716 | when it won't occur. */ | |
e2ad119d AC |
717 | /* NOTE: This assumes that the significant address information is |
718 | kept in the least significant bits of ADDR - the upper bits were | |
719 | either zero or sign extended. Should ADDRESS_TO_POINTER() or | |
720 | some ADDRESS_TO_PRINTABLE() be used to do the conversion? */ | |
c0d8fd9a | 721 | |
52204a0b | 722 | int addr_bit = TARGET_ADDR_BIT; |
c0d8fd9a | 723 | |
52204a0b DT |
724 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) |
725 | addr &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
c906108c SS |
726 | print_longest (stream, 'x', use_local, (ULONGEST) addr); |
727 | } | |
728 | ||
729 | /* Print address ADDR symbolically on STREAM. | |
730 | First print it as a number. Then perhaps print | |
731 | <SYMBOL + OFFSET> after the number. */ | |
732 | ||
733 | void | |
fba45db2 | 734 | print_address (CORE_ADDR addr, struct ui_file *stream) |
c906108c SS |
735 | { |
736 | print_address_numeric (addr, 1, stream); | |
737 | print_address_symbolic (addr, stream, asm_demangle, " "); | |
738 | } | |
739 | ||
740 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE | |
741 | controls whether to print the symbolic name "raw" or demangled. | |
742 | Global setting "addressprint" controls whether to print hex address | |
743 | or not. */ | |
744 | ||
745 | void | |
fba45db2 | 746 | print_address_demangle (CORE_ADDR addr, struct ui_file *stream, int do_demangle) |
c906108c SS |
747 | { |
748 | if (addr == 0) | |
749 | { | |
750 | fprintf_filtered (stream, "0"); | |
751 | } | |
752 | else if (addressprint) | |
753 | { | |
754 | print_address_numeric (addr, 1, stream); | |
755 | print_address_symbolic (addr, stream, do_demangle, " "); | |
756 | } | |
757 | else | |
758 | { | |
759 | print_address_symbolic (addr, stream, do_demangle, ""); | |
760 | } | |
761 | } | |
762 | \f | |
763 | ||
764 | /* These are the types that $__ will get after an examine command of one | |
765 | of these sizes. */ | |
766 | ||
767 | static struct type *examine_i_type; | |
768 | ||
769 | static struct type *examine_b_type; | |
770 | static struct type *examine_h_type; | |
771 | static struct type *examine_w_type; | |
772 | static struct type *examine_g_type; | |
773 | ||
774 | /* Examine data at address ADDR in format FMT. | |
775 | Fetch it from memory and print on gdb_stdout. */ | |
776 | ||
777 | static void | |
fba45db2 | 778 | do_examine (struct format_data fmt, CORE_ADDR addr, asection *sect) |
c906108c | 779 | { |
52f0bd74 AC |
780 | char format = 0; |
781 | char size; | |
782 | int count = 1; | |
c906108c | 783 | struct type *val_type = NULL; |
52f0bd74 AC |
784 | int i; |
785 | int maxelts; | |
c906108c SS |
786 | |
787 | format = fmt.format; | |
788 | size = fmt.size; | |
789 | count = fmt.count; | |
790 | next_address = addr; | |
791 | next_section = sect; | |
792 | ||
793 | /* String or instruction format implies fetch single bytes | |
794 | regardless of the specified size. */ | |
795 | if (format == 's' || format == 'i') | |
796 | size = 'b'; | |
797 | ||
798 | if (format == 'i') | |
799 | val_type = examine_i_type; | |
800 | else if (size == 'b') | |
801 | val_type = examine_b_type; | |
802 | else if (size == 'h') | |
803 | val_type = examine_h_type; | |
804 | else if (size == 'w') | |
805 | val_type = examine_w_type; | |
806 | else if (size == 'g') | |
807 | val_type = examine_g_type; | |
808 | ||
809 | maxelts = 8; | |
810 | if (size == 'w') | |
811 | maxelts = 4; | |
812 | if (size == 'g') | |
813 | maxelts = 2; | |
814 | if (format == 's' || format == 'i') | |
815 | maxelts = 1; | |
816 | ||
817 | /* Print as many objects as specified in COUNT, at most maxelts per line, | |
818 | with the address of the next one at the start of each line. */ | |
819 | ||
820 | while (count > 0) | |
821 | { | |
822 | QUIT; | |
823 | print_address (next_address, gdb_stdout); | |
824 | printf_filtered (":"); | |
825 | for (i = maxelts; | |
826 | i > 0 && count > 0; | |
827 | i--, count--) | |
828 | { | |
829 | printf_filtered ("\t"); | |
830 | /* Note that print_formatted sets next_address for the next | |
831 | object. */ | |
832 | last_examine_address = next_address; | |
833 | ||
834 | if (last_examine_value) | |
835 | value_free (last_examine_value); | |
836 | ||
837 | /* The value to be displayed is not fetched greedily. | |
c5aa993b JM |
838 | Instead, to avoid the posibility of a fetched value not |
839 | being used, its retreval is delayed until the print code | |
840 | uses it. When examining an instruction stream, the | |
841 | disassembler will perform its own memory fetch using just | |
842 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
843 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
844 | is left with the byte sequence from the last complete | |
845 | instruction fetched from memory? */ | |
c906108c SS |
846 | last_examine_value = value_at_lazy (val_type, next_address, sect); |
847 | ||
848 | if (last_examine_value) | |
849 | release_value (last_examine_value); | |
850 | ||
2acceee2 | 851 | print_formatted (last_examine_value, format, size, gdb_stdout); |
c906108c SS |
852 | } |
853 | printf_filtered ("\n"); | |
854 | gdb_flush (gdb_stdout); | |
855 | } | |
856 | } | |
857 | \f | |
858 | static void | |
fba45db2 | 859 | validate_format (struct format_data fmt, char *cmdname) |
c906108c SS |
860 | { |
861 | if (fmt.size != 0) | |
862 | error ("Size letters are meaningless in \"%s\" command.", cmdname); | |
863 | if (fmt.count != 1) | |
864 | error ("Item count other than 1 is meaningless in \"%s\" command.", | |
865 | cmdname); | |
866 | if (fmt.format == 'i' || fmt.format == 's') | |
867 | error ("Format letter \"%c\" is meaningless in \"%s\" command.", | |
868 | fmt.format, cmdname); | |
869 | } | |
870 | ||
871 | /* Evaluate string EXP as an expression in the current language and | |
c5aa993b JM |
872 | print the resulting value. EXP may contain a format specifier as the |
873 | first argument ("/x myvar" for example, to print myvar in hex). | |
874 | */ | |
c906108c SS |
875 | |
876 | static void | |
fba45db2 | 877 | print_command_1 (char *exp, int inspect, int voidprint) |
c906108c SS |
878 | { |
879 | struct expression *expr; | |
52f0bd74 AC |
880 | struct cleanup *old_chain = 0; |
881 | char format = 0; | |
3d6d86c6 | 882 | struct value *val; |
c906108c SS |
883 | struct format_data fmt; |
884 | int cleanup = 0; | |
885 | ||
886 | /* Pass inspect flag to the rest of the print routines in a global (sigh). */ | |
887 | inspect_it = inspect; | |
888 | ||
889 | if (exp && *exp == '/') | |
890 | { | |
891 | exp++; | |
892 | fmt = decode_format (&exp, last_format, 0); | |
893 | validate_format (fmt, "print"); | |
894 | last_format = format = fmt.format; | |
895 | } | |
896 | else | |
897 | { | |
898 | fmt.count = 1; | |
899 | fmt.format = 0; | |
900 | fmt.size = 0; | |
901 | } | |
902 | ||
903 | if (exp && *exp) | |
904 | { | |
c906108c SS |
905 | struct type *type; |
906 | expr = parse_expression (exp); | |
c13c43fd | 907 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
908 | cleanup = 1; |
909 | val = evaluate_expression (expr); | |
c906108c SS |
910 | } |
911 | else | |
912 | val = access_value_history (0); | |
913 | ||
914 | if (voidprint || (val && VALUE_TYPE (val) && | |
c5aa993b | 915 | TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_VOID)) |
c906108c SS |
916 | { |
917 | int histindex = record_latest_value (val); | |
918 | ||
919 | if (histindex >= 0) | |
920 | annotate_value_history_begin (histindex, VALUE_TYPE (val)); | |
921 | else | |
922 | annotate_value_begin (VALUE_TYPE (val)); | |
923 | ||
924 | if (inspect) | |
925 | printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"", exp, histindex); | |
c5aa993b JM |
926 | else if (histindex >= 0) |
927 | printf_filtered ("$%d = ", histindex); | |
c906108c SS |
928 | |
929 | if (histindex >= 0) | |
930 | annotate_value_history_value (); | |
931 | ||
2acceee2 | 932 | print_formatted (val, format, fmt.size, gdb_stdout); |
c906108c SS |
933 | printf_filtered ("\n"); |
934 | ||
935 | if (histindex >= 0) | |
936 | annotate_value_history_end (); | |
937 | else | |
938 | annotate_value_end (); | |
939 | ||
940 | if (inspect) | |
c5aa993b | 941 | printf_unfiltered ("\") )\030"); |
c906108c SS |
942 | } |
943 | ||
944 | if (cleanup) | |
945 | do_cleanups (old_chain); | |
c5aa993b | 946 | inspect_it = 0; /* Reset print routines to normal */ |
c906108c SS |
947 | } |
948 | ||
c906108c | 949 | static void |
fba45db2 | 950 | print_command (char *exp, int from_tty) |
c906108c SS |
951 | { |
952 | print_command_1 (exp, 0, 1); | |
953 | } | |
954 | ||
955 | /* Same as print, except in epoch, it gets its own window */ | |
c906108c | 956 | static void |
fba45db2 | 957 | inspect_command (char *exp, int from_tty) |
c906108c SS |
958 | { |
959 | extern int epoch_interface; | |
960 | ||
961 | print_command_1 (exp, epoch_interface, 1); | |
962 | } | |
963 | ||
964 | /* Same as print, except it doesn't print void results. */ | |
c906108c | 965 | static void |
fba45db2 | 966 | call_command (char *exp, int from_tty) |
c906108c SS |
967 | { |
968 | print_command_1 (exp, 0, 0); | |
969 | } | |
970 | ||
c906108c | 971 | void |
fba45db2 | 972 | output_command (char *exp, int from_tty) |
c906108c SS |
973 | { |
974 | struct expression *expr; | |
52f0bd74 AC |
975 | struct cleanup *old_chain; |
976 | char format = 0; | |
3d6d86c6 | 977 | struct value *val; |
c906108c SS |
978 | struct format_data fmt; |
979 | ||
980 | if (exp && *exp == '/') | |
981 | { | |
982 | exp++; | |
983 | fmt = decode_format (&exp, 0, 0); | |
984 | validate_format (fmt, "output"); | |
985 | format = fmt.format; | |
986 | } | |
987 | ||
988 | expr = parse_expression (exp); | |
c13c43fd | 989 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
990 | |
991 | val = evaluate_expression (expr); | |
992 | ||
993 | annotate_value_begin (VALUE_TYPE (val)); | |
994 | ||
2acceee2 | 995 | print_formatted (val, format, fmt.size, gdb_stdout); |
c906108c SS |
996 | |
997 | annotate_value_end (); | |
998 | ||
2acceee2 JM |
999 | wrap_here (""); |
1000 | gdb_flush (gdb_stdout); | |
1001 | ||
c906108c SS |
1002 | do_cleanups (old_chain); |
1003 | } | |
1004 | ||
c906108c | 1005 | static void |
fba45db2 | 1006 | set_command (char *exp, int from_tty) |
c906108c SS |
1007 | { |
1008 | struct expression *expr = parse_expression (exp); | |
52f0bd74 | 1009 | struct cleanup *old_chain = |
c13c43fd | 1010 | make_cleanup (free_current_contents, &expr); |
c906108c SS |
1011 | evaluate_expression (expr); |
1012 | do_cleanups (old_chain); | |
1013 | } | |
1014 | ||
c906108c | 1015 | static void |
fba45db2 | 1016 | sym_info (char *arg, int from_tty) |
c906108c SS |
1017 | { |
1018 | struct minimal_symbol *msymbol; | |
c5aa993b JM |
1019 | struct objfile *objfile; |
1020 | struct obj_section *osect; | |
1021 | asection *sect; | |
1022 | CORE_ADDR addr, sect_addr; | |
1023 | int matches = 0; | |
1024 | unsigned int offset; | |
c906108c SS |
1025 | |
1026 | if (!arg) | |
1027 | error_no_arg ("address"); | |
1028 | ||
1029 | addr = parse_and_eval_address (arg); | |
1030 | ALL_OBJSECTIONS (objfile, osect) | |
c5aa993b JM |
1031 | { |
1032 | sect = osect->the_bfd_section; | |
1033 | sect_addr = overlay_mapped_address (addr, sect); | |
c906108c | 1034 | |
c5aa993b JM |
1035 | if (osect->addr <= sect_addr && sect_addr < osect->endaddr && |
1036 | (msymbol = lookup_minimal_symbol_by_pc_section (sect_addr, sect))) | |
1037 | { | |
1038 | matches = 1; | |
1039 | offset = sect_addr - SYMBOL_VALUE_ADDRESS (msymbol); | |
1040 | if (offset) | |
1041 | printf_filtered ("%s + %u in ", | |
de5ad195 | 1042 | SYMBOL_PRINT_NAME (msymbol), offset); |
c5aa993b JM |
1043 | else |
1044 | printf_filtered ("%s in ", | |
de5ad195 | 1045 | SYMBOL_PRINT_NAME (msymbol)); |
c5aa993b JM |
1046 | if (pc_in_unmapped_range (addr, sect)) |
1047 | printf_filtered ("load address range of "); | |
1048 | if (section_is_overlay (sect)) | |
1049 | printf_filtered ("%s overlay ", | |
1050 | section_is_mapped (sect) ? "mapped" : "unmapped"); | |
1051 | printf_filtered ("section %s", sect->name); | |
1052 | printf_filtered ("\n"); | |
1053 | } | |
1054 | } | |
c906108c SS |
1055 | if (matches == 0) |
1056 | printf_filtered ("No symbol matches %s.\n", arg); | |
1057 | } | |
1058 | ||
c906108c | 1059 | static void |
fba45db2 | 1060 | address_info (char *exp, int from_tty) |
c906108c | 1061 | { |
52f0bd74 AC |
1062 | struct symbol *sym; |
1063 | struct minimal_symbol *msymbol; | |
1064 | long val; | |
1065 | long basereg; | |
c906108c SS |
1066 | asection *section; |
1067 | CORE_ADDR load_addr; | |
1068 | int is_a_field_of_this; /* C++: lookup_symbol sets this to nonzero | |
1069 | if exp is a field of `this'. */ | |
1070 | ||
1071 | if (exp == 0) | |
1072 | error ("Argument required."); | |
1073 | ||
176620f1 | 1074 | sym = lookup_symbol (exp, get_selected_block (0), VAR_DOMAIN, |
c5aa993b | 1075 | &is_a_field_of_this, (struct symtab **) NULL); |
c906108c SS |
1076 | if (sym == NULL) |
1077 | { | |
1078 | if (is_a_field_of_this) | |
1079 | { | |
1080 | printf_filtered ("Symbol \""); | |
1081 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1082 | current_language->la_language, DMGL_ANSI); | |
e2b23ee9 AF |
1083 | printf_filtered ("\" is a field of the local class variable "); |
1084 | if (current_language->la_language == language_objc) | |
2625d86c | 1085 | printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */ |
e2b23ee9 | 1086 | else |
2625d86c | 1087 | printf_filtered ("`this'\n"); |
c906108c SS |
1088 | return; |
1089 | } | |
1090 | ||
1091 | msymbol = lookup_minimal_symbol (exp, NULL, NULL); | |
1092 | ||
1093 | if (msymbol != NULL) | |
1094 | { | |
1095 | load_addr = SYMBOL_VALUE_ADDRESS (msymbol); | |
1096 | ||
1097 | printf_filtered ("Symbol \""); | |
1098 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1099 | current_language->la_language, DMGL_ANSI); | |
1100 | printf_filtered ("\" is at "); | |
1101 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1102 | printf_filtered (" in a file compiled without debugging"); | |
1103 | section = SYMBOL_BFD_SECTION (msymbol); | |
1104 | if (section_is_overlay (section)) | |
1105 | { | |
1106 | load_addr = overlay_unmapped_address (load_addr, section); | |
1107 | printf_filtered (",\n -- loaded at "); | |
1108 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1109 | printf_filtered (" in overlay section %s", section->name); | |
1110 | } | |
1111 | printf_filtered (".\n"); | |
1112 | } | |
1113 | else | |
1114 | error ("No symbol \"%s\" in current context.", exp); | |
1115 | return; | |
1116 | } | |
1117 | ||
1118 | printf_filtered ("Symbol \""); | |
22abf04a | 1119 | fprintf_symbol_filtered (gdb_stdout, DEPRECATED_SYMBOL_NAME (sym), |
c906108c SS |
1120 | current_language->la_language, DMGL_ANSI); |
1121 | printf_filtered ("\" is "); | |
c5aa993b | 1122 | val = SYMBOL_VALUE (sym); |
c906108c SS |
1123 | basereg = SYMBOL_BASEREG (sym); |
1124 | section = SYMBOL_BFD_SECTION (sym); | |
1125 | ||
1126 | switch (SYMBOL_CLASS (sym)) | |
1127 | { | |
1128 | case LOC_CONST: | |
1129 | case LOC_CONST_BYTES: | |
1130 | printf_filtered ("constant"); | |
1131 | break; | |
1132 | ||
1133 | case LOC_LABEL: | |
1134 | printf_filtered ("a label at address "); | |
c5aa993b | 1135 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym), |
c906108c SS |
1136 | 1, gdb_stdout); |
1137 | if (section_is_overlay (section)) | |
1138 | { | |
1139 | load_addr = overlay_unmapped_address (load_addr, section); | |
1140 | printf_filtered (",\n -- loaded at "); | |
1141 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1142 | printf_filtered (" in overlay section %s", section->name); | |
1143 | } | |
1144 | break; | |
1145 | ||
4c2df51b DJ |
1146 | case LOC_COMPUTED: |
1147 | case LOC_COMPUTED_ARG: | |
a67af2b9 AC |
1148 | /* FIXME: cagney/2004-01-26: It should be possible to |
1149 | unconditionally call the SYMBOL_OPS method when available. | |
d3efc286 | 1150 | Unfortunately DWARF 2 stores the frame-base (instead of the |
a67af2b9 AC |
1151 | function) location in a function's symbol. Oops! For the |
1152 | moment enable this when/where applicable. */ | |
1153 | SYMBOL_OPS (sym)->describe_location (sym, gdb_stdout); | |
4c2df51b DJ |
1154 | break; |
1155 | ||
c906108c SS |
1156 | case LOC_REGISTER: |
1157 | printf_filtered ("a variable in register %s", REGISTER_NAME (val)); | |
1158 | break; | |
1159 | ||
1160 | case LOC_STATIC: | |
1161 | printf_filtered ("static storage at address "); | |
c5aa993b | 1162 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym), |
c906108c SS |
1163 | 1, gdb_stdout); |
1164 | if (section_is_overlay (section)) | |
1165 | { | |
1166 | load_addr = overlay_unmapped_address (load_addr, section); | |
1167 | printf_filtered (",\n -- loaded at "); | |
1168 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1169 | printf_filtered (" in overlay section %s", section->name); | |
1170 | } | |
1171 | break; | |
1172 | ||
1173 | case LOC_INDIRECT: | |
1174 | printf_filtered ("external global (indirect addressing), at address *("); | |
1175 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym), | |
1176 | 1, gdb_stdout); | |
1177 | printf_filtered (")"); | |
1178 | if (section_is_overlay (section)) | |
1179 | { | |
1180 | load_addr = overlay_unmapped_address (load_addr, section); | |
1181 | printf_filtered (",\n -- loaded at "); | |
1182 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1183 | printf_filtered (" in overlay section %s", section->name); | |
1184 | } | |
1185 | break; | |
1186 | ||
1187 | case LOC_REGPARM: | |
1188 | printf_filtered ("an argument in register %s", REGISTER_NAME (val)); | |
1189 | break; | |
1190 | ||
1191 | case LOC_REGPARM_ADDR: | |
1192 | printf_filtered ("address of an argument in register %s", REGISTER_NAME (val)); | |
1193 | break; | |
1194 | ||
1195 | case LOC_ARG: | |
1196 | printf_filtered ("an argument at offset %ld", val); | |
1197 | break; | |
1198 | ||
1199 | case LOC_LOCAL_ARG: | |
1200 | printf_filtered ("an argument at frame offset %ld", val); | |
1201 | break; | |
1202 | ||
1203 | case LOC_LOCAL: | |
1204 | printf_filtered ("a local variable at frame offset %ld", val); | |
1205 | break; | |
1206 | ||
1207 | case LOC_REF_ARG: | |
1208 | printf_filtered ("a reference argument at offset %ld", val); | |
1209 | break; | |
1210 | ||
1211 | case LOC_BASEREG: | |
1212 | printf_filtered ("a variable at offset %ld from register %s", | |
c5aa993b | 1213 | val, REGISTER_NAME (basereg)); |
c906108c SS |
1214 | break; |
1215 | ||
1216 | case LOC_BASEREG_ARG: | |
1217 | printf_filtered ("an argument at offset %ld from register %s", | |
c5aa993b | 1218 | val, REGISTER_NAME (basereg)); |
c906108c SS |
1219 | break; |
1220 | ||
1221 | case LOC_TYPEDEF: | |
1222 | printf_filtered ("a typedef"); | |
1223 | break; | |
1224 | ||
1225 | case LOC_BLOCK: | |
1226 | printf_filtered ("a function at address "); | |
c5aa993b | 1227 | print_address_numeric (load_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)), |
c906108c | 1228 | 1, gdb_stdout); |
c906108c SS |
1229 | if (section_is_overlay (section)) |
1230 | { | |
1231 | load_addr = overlay_unmapped_address (load_addr, section); | |
1232 | printf_filtered (",\n -- loaded at "); | |
1233 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1234 | printf_filtered (" in overlay section %s", section->name); | |
1235 | } | |
1236 | break; | |
1237 | ||
1238 | case LOC_UNRESOLVED: | |
1239 | { | |
1240 | struct minimal_symbol *msym; | |
1241 | ||
22abf04a | 1242 | msym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym), NULL, NULL); |
c906108c SS |
1243 | if (msym == NULL) |
1244 | printf_filtered ("unresolved"); | |
1245 | else | |
1246 | { | |
1247 | section = SYMBOL_BFD_SECTION (msym); | |
1248 | printf_filtered ("static storage at address "); | |
c5aa993b | 1249 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (msym), |
c906108c SS |
1250 | 1, gdb_stdout); |
1251 | if (section_is_overlay (section)) | |
1252 | { | |
1253 | load_addr = overlay_unmapped_address (load_addr, section); | |
1254 | printf_filtered (",\n -- loaded at "); | |
1255 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1256 | printf_filtered (" in overlay section %s", section->name); | |
1257 | } | |
1258 | } | |
1259 | } | |
1260 | break; | |
1261 | ||
407caf07 | 1262 | case LOC_HP_THREAD_LOCAL_STATIC: |
c906108c | 1263 | printf_filtered ( |
c5aa993b JM |
1264 | "a thread-local variable at offset %ld from the thread base register %s", |
1265 | val, REGISTER_NAME (basereg)); | |
c906108c SS |
1266 | break; |
1267 | ||
1268 | case LOC_OPTIMIZED_OUT: | |
1269 | printf_filtered ("optimized out"); | |
1270 | break; | |
c5aa993b | 1271 | |
c906108c SS |
1272 | default: |
1273 | printf_filtered ("of unknown (botched) type"); | |
1274 | break; | |
1275 | } | |
1276 | printf_filtered (".\n"); | |
1277 | } | |
1278 | \f | |
1279 | void | |
fba45db2 | 1280 | x_command (char *exp, int from_tty) |
c906108c SS |
1281 | { |
1282 | struct expression *expr; | |
1283 | struct format_data fmt; | |
1284 | struct cleanup *old_chain; | |
1285 | struct value *val; | |
1286 | ||
1287 | fmt.format = last_format; | |
1288 | fmt.size = last_size; | |
1289 | fmt.count = 1; | |
1290 | ||
1291 | if (exp && *exp == '/') | |
1292 | { | |
1293 | exp++; | |
1294 | fmt = decode_format (&exp, last_format, last_size); | |
1295 | } | |
1296 | ||
1297 | /* If we have an expression, evaluate it and use it as the address. */ | |
1298 | ||
1299 | if (exp != 0 && *exp != 0) | |
1300 | { | |
1301 | expr = parse_expression (exp); | |
1302 | /* Cause expression not to be there any more | |
c5aa993b JM |
1303 | if this command is repeated with Newline. |
1304 | But don't clobber a user-defined command's definition. */ | |
c906108c SS |
1305 | if (from_tty) |
1306 | *exp = 0; | |
c13c43fd | 1307 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
1308 | val = evaluate_expression (expr); |
1309 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_REF) | |
1310 | val = value_ind (val); | |
1311 | /* In rvalue contexts, such as this, functions are coerced into | |
c5aa993b | 1312 | pointers to functions. This makes "x/i main" work. */ |
c0d8fd9a MS |
1313 | if (/* last_format == 'i' && */ |
1314 | TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_FUNC | |
c5aa993b | 1315 | && VALUE_LVAL (val) == lval_memory) |
c906108c SS |
1316 | next_address = VALUE_ADDRESS (val); |
1317 | else | |
1aa20aa8 | 1318 | next_address = value_as_address (val); |
c906108c SS |
1319 | if (VALUE_BFD_SECTION (val)) |
1320 | next_section = VALUE_BFD_SECTION (val); | |
1321 | do_cleanups (old_chain); | |
1322 | } | |
1323 | ||
1324 | do_examine (fmt, next_address, next_section); | |
1325 | ||
1326 | /* If the examine succeeds, we remember its size and format for next time. */ | |
1327 | last_size = fmt.size; | |
1328 | last_format = fmt.format; | |
1329 | ||
1330 | /* Set a couple of internal variables if appropriate. */ | |
1331 | if (last_examine_value) | |
1332 | { | |
1333 | /* Make last address examined available to the user as $_. Use | |
c5aa993b | 1334 | the correct pointer type. */ |
4478b372 JB |
1335 | struct type *pointer_type |
1336 | = lookup_pointer_type (VALUE_TYPE (last_examine_value)); | |
c906108c | 1337 | set_internalvar (lookup_internalvar ("_"), |
4478b372 JB |
1338 | value_from_pointer (pointer_type, |
1339 | last_examine_address)); | |
c5aa993b JM |
1340 | |
1341 | /* Make contents of last address examined available to the user as $__. */ | |
c906108c SS |
1342 | /* If the last value has not been fetched from memory then don't |
1343 | fetch it now - instead mark it by voiding the $__ variable. */ | |
1344 | if (VALUE_LAZY (last_examine_value)) | |
1345 | set_internalvar (lookup_internalvar ("__"), | |
1346 | allocate_value (builtin_type_void)); | |
1347 | else | |
1348 | set_internalvar (lookup_internalvar ("__"), last_examine_value); | |
1349 | } | |
1350 | } | |
c906108c | 1351 | \f |
c5aa993b | 1352 | |
c906108c SS |
1353 | /* Add an expression to the auto-display chain. |
1354 | Specify the expression. */ | |
1355 | ||
1356 | static void | |
fba45db2 | 1357 | display_command (char *exp, int from_tty) |
c906108c SS |
1358 | { |
1359 | struct format_data fmt; | |
52f0bd74 AC |
1360 | struct expression *expr; |
1361 | struct display *new; | |
c906108c SS |
1362 | int display_it = 1; |
1363 | ||
1364 | #if defined(TUI) | |
021e7609 AC |
1365 | /* NOTE: cagney/2003-02-13 The `tui_active' was previously |
1366 | `tui_version'. */ | |
fd33e6cb | 1367 | if (tui_active && exp != NULL && *exp == '$') |
080ce8c0 | 1368 | display_it = (tui_set_layout_for_display_command (exp) == TUI_FAILURE); |
c906108c SS |
1369 | #endif |
1370 | ||
1371 | if (display_it) | |
1372 | { | |
1373 | if (exp == 0) | |
1374 | { | |
1375 | do_displays (); | |
1376 | return; | |
1377 | } | |
1378 | ||
1379 | if (*exp == '/') | |
1380 | { | |
1381 | exp++; | |
1382 | fmt = decode_format (&exp, 0, 0); | |
1383 | if (fmt.size && fmt.format == 0) | |
1384 | fmt.format = 'x'; | |
1385 | if (fmt.format == 'i' || fmt.format == 's') | |
1386 | fmt.size = 'b'; | |
1387 | } | |
1388 | else | |
1389 | { | |
1390 | fmt.format = 0; | |
1391 | fmt.size = 0; | |
1392 | fmt.count = 0; | |
1393 | } | |
1394 | ||
1395 | innermost_block = 0; | |
1396 | expr = parse_expression (exp); | |
1397 | ||
1398 | new = (struct display *) xmalloc (sizeof (struct display)); | |
1399 | ||
1400 | new->exp = expr; | |
1401 | new->block = innermost_block; | |
1402 | new->next = display_chain; | |
1403 | new->number = ++display_number; | |
1404 | new->format = fmt; | |
b5de0fa7 | 1405 | new->enabled_p = 1; |
c906108c SS |
1406 | display_chain = new; |
1407 | ||
1408 | if (from_tty && target_has_execution) | |
1409 | do_one_display (new); | |
1410 | ||
1411 | dont_repeat (); | |
1412 | } | |
1413 | } | |
1414 | ||
1415 | static void | |
fba45db2 | 1416 | free_display (struct display *d) |
c906108c | 1417 | { |
b8c9b27d KB |
1418 | xfree (d->exp); |
1419 | xfree (d); | |
c906108c SS |
1420 | } |
1421 | ||
1422 | /* Clear out the display_chain. | |
1423 | Done when new symtabs are loaded, since this invalidates | |
1424 | the types stored in many expressions. */ | |
1425 | ||
1426 | void | |
fba45db2 | 1427 | clear_displays (void) |
c906108c | 1428 | { |
52f0bd74 | 1429 | struct display *d; |
c906108c SS |
1430 | |
1431 | while ((d = display_chain) != NULL) | |
1432 | { | |
b8c9b27d | 1433 | xfree (d->exp); |
c906108c | 1434 | display_chain = d->next; |
b8c9b27d | 1435 | xfree (d); |
c906108c SS |
1436 | } |
1437 | } | |
1438 | ||
1439 | /* Delete the auto-display number NUM. */ | |
1440 | ||
1441 | static void | |
fba45db2 | 1442 | delete_display (int num) |
c906108c | 1443 | { |
52f0bd74 | 1444 | struct display *d1, *d; |
c906108c SS |
1445 | |
1446 | if (!display_chain) | |
1447 | error ("No display number %d.", num); | |
1448 | ||
1449 | if (display_chain->number == num) | |
1450 | { | |
1451 | d1 = display_chain; | |
1452 | display_chain = d1->next; | |
1453 | free_display (d1); | |
1454 | } | |
1455 | else | |
c5aa993b | 1456 | for (d = display_chain;; d = d->next) |
c906108c SS |
1457 | { |
1458 | if (d->next == 0) | |
1459 | error ("No display number %d.", num); | |
1460 | if (d->next->number == num) | |
1461 | { | |
1462 | d1 = d->next; | |
1463 | d->next = d1->next; | |
1464 | free_display (d1); | |
1465 | break; | |
1466 | } | |
1467 | } | |
1468 | } | |
1469 | ||
1470 | /* Delete some values from the auto-display chain. | |
1471 | Specify the element numbers. */ | |
1472 | ||
1473 | static void | |
fba45db2 | 1474 | undisplay_command (char *args, int from_tty) |
c906108c | 1475 | { |
52f0bd74 AC |
1476 | char *p = args; |
1477 | char *p1; | |
1478 | int num; | |
c906108c SS |
1479 | |
1480 | if (args == 0) | |
1481 | { | |
1482 | if (query ("Delete all auto-display expressions? ")) | |
1483 | clear_displays (); | |
1484 | dont_repeat (); | |
1485 | return; | |
1486 | } | |
1487 | ||
1488 | while (*p) | |
1489 | { | |
1490 | p1 = p; | |
c5aa993b JM |
1491 | while (*p1 >= '0' && *p1 <= '9') |
1492 | p1++; | |
c906108c SS |
1493 | if (*p1 && *p1 != ' ' && *p1 != '\t') |
1494 | error ("Arguments must be display numbers."); | |
1495 | ||
1496 | num = atoi (p); | |
1497 | ||
1498 | delete_display (num); | |
1499 | ||
1500 | p = p1; | |
c5aa993b JM |
1501 | while (*p == ' ' || *p == '\t') |
1502 | p++; | |
c906108c SS |
1503 | } |
1504 | dont_repeat (); | |
1505 | } | |
1506 | ||
1507 | /* Display a single auto-display. | |
1508 | Do nothing if the display cannot be printed in the current context, | |
1509 | or if the display is disabled. */ | |
1510 | ||
1511 | static void | |
fba45db2 | 1512 | do_one_display (struct display *d) |
c906108c SS |
1513 | { |
1514 | int within_current_scope; | |
1515 | ||
b5de0fa7 | 1516 | if (d->enabled_p == 0) |
c906108c SS |
1517 | return; |
1518 | ||
1519 | if (d->block) | |
ae767bfb | 1520 | within_current_scope = contained_in (get_selected_block (0), d->block); |
c906108c SS |
1521 | else |
1522 | within_current_scope = 1; | |
1523 | if (!within_current_scope) | |
1524 | return; | |
1525 | ||
1526 | current_display_number = d->number; | |
1527 | ||
1528 | annotate_display_begin (); | |
1529 | printf_filtered ("%d", d->number); | |
1530 | annotate_display_number_end (); | |
1531 | printf_filtered (": "); | |
1532 | if (d->format.size) | |
1533 | { | |
1534 | CORE_ADDR addr; | |
3d6d86c6 | 1535 | struct value *val; |
c906108c SS |
1536 | |
1537 | annotate_display_format (); | |
1538 | ||
1539 | printf_filtered ("x/"); | |
1540 | if (d->format.count != 1) | |
1541 | printf_filtered ("%d", d->format.count); | |
1542 | printf_filtered ("%c", d->format.format); | |
1543 | if (d->format.format != 'i' && d->format.format != 's') | |
1544 | printf_filtered ("%c", d->format.size); | |
1545 | printf_filtered (" "); | |
1546 | ||
1547 | annotate_display_expression (); | |
1548 | ||
1549 | print_expression (d->exp, gdb_stdout); | |
1550 | annotate_display_expression_end (); | |
1551 | ||
1552 | if (d->format.count != 1) | |
1553 | printf_filtered ("\n"); | |
1554 | else | |
1555 | printf_filtered (" "); | |
c5aa993b | 1556 | |
c906108c | 1557 | val = evaluate_expression (d->exp); |
1aa20aa8 | 1558 | addr = value_as_address (val); |
c906108c SS |
1559 | if (d->format.format == 'i') |
1560 | addr = ADDR_BITS_REMOVE (addr); | |
1561 | ||
1562 | annotate_display_value (); | |
1563 | ||
1564 | do_examine (d->format, addr, VALUE_BFD_SECTION (val)); | |
1565 | } | |
1566 | else | |
1567 | { | |
1568 | annotate_display_format (); | |
1569 | ||
1570 | if (d->format.format) | |
1571 | printf_filtered ("/%c ", d->format.format); | |
1572 | ||
1573 | annotate_display_expression (); | |
1574 | ||
1575 | print_expression (d->exp, gdb_stdout); | |
1576 | annotate_display_expression_end (); | |
1577 | ||
1578 | printf_filtered (" = "); | |
1579 | ||
1580 | annotate_display_expression (); | |
1581 | ||
1582 | print_formatted (evaluate_expression (d->exp), | |
2acceee2 | 1583 | d->format.format, d->format.size, gdb_stdout); |
c906108c SS |
1584 | printf_filtered ("\n"); |
1585 | } | |
1586 | ||
1587 | annotate_display_end (); | |
1588 | ||
1589 | gdb_flush (gdb_stdout); | |
1590 | current_display_number = -1; | |
1591 | } | |
1592 | ||
1593 | /* Display all of the values on the auto-display chain which can be | |
1594 | evaluated in the current scope. */ | |
1595 | ||
1596 | void | |
fba45db2 | 1597 | do_displays (void) |
c906108c | 1598 | { |
52f0bd74 | 1599 | struct display *d; |
c906108c SS |
1600 | |
1601 | for (d = display_chain; d; d = d->next) | |
1602 | do_one_display (d); | |
1603 | } | |
1604 | ||
1605 | /* Delete the auto-display which we were in the process of displaying. | |
1606 | This is done when there is an error or a signal. */ | |
1607 | ||
1608 | void | |
fba45db2 | 1609 | disable_display (int num) |
c906108c | 1610 | { |
52f0bd74 | 1611 | struct display *d; |
c906108c SS |
1612 | |
1613 | for (d = display_chain; d; d = d->next) | |
1614 | if (d->number == num) | |
1615 | { | |
b5de0fa7 | 1616 | d->enabled_p = 0; |
c906108c SS |
1617 | return; |
1618 | } | |
1619 | printf_unfiltered ("No display number %d.\n", num); | |
1620 | } | |
c5aa993b | 1621 | |
c906108c | 1622 | void |
fba45db2 | 1623 | disable_current_display (void) |
c906108c SS |
1624 | { |
1625 | if (current_display_number >= 0) | |
1626 | { | |
1627 | disable_display (current_display_number); | |
1628 | fprintf_unfiltered (gdb_stderr, "Disabling display %d to avoid infinite recursion.\n", | |
c5aa993b | 1629 | current_display_number); |
c906108c SS |
1630 | } |
1631 | current_display_number = -1; | |
1632 | } | |
1633 | ||
1634 | static void | |
fba45db2 | 1635 | display_info (char *ignore, int from_tty) |
c906108c | 1636 | { |
52f0bd74 | 1637 | struct display *d; |
c906108c SS |
1638 | |
1639 | if (!display_chain) | |
1640 | printf_unfiltered ("There are no auto-display expressions now.\n"); | |
1641 | else | |
c5aa993b | 1642 | printf_filtered ("Auto-display expressions now in effect:\n\ |
c906108c SS |
1643 | Num Enb Expression\n"); |
1644 | ||
1645 | for (d = display_chain; d; d = d->next) | |
1646 | { | |
b5de0fa7 | 1647 | printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]); |
c906108c SS |
1648 | if (d->format.size) |
1649 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
c5aa993b | 1650 | d->format.format); |
c906108c SS |
1651 | else if (d->format.format) |
1652 | printf_filtered ("/%c ", d->format.format); | |
1653 | print_expression (d->exp, gdb_stdout); | |
ae767bfb | 1654 | if (d->block && !contained_in (get_selected_block (0), d->block)) |
c906108c SS |
1655 | printf_filtered (" (cannot be evaluated in the current context)"); |
1656 | printf_filtered ("\n"); | |
1657 | gdb_flush (gdb_stdout); | |
1658 | } | |
1659 | } | |
1660 | ||
1661 | static void | |
fba45db2 | 1662 | enable_display (char *args, int from_tty) |
c906108c | 1663 | { |
52f0bd74 AC |
1664 | char *p = args; |
1665 | char *p1; | |
1666 | int num; | |
1667 | struct display *d; | |
c906108c SS |
1668 | |
1669 | if (p == 0) | |
1670 | { | |
1671 | for (d = display_chain; d; d = d->next) | |
b5de0fa7 | 1672 | d->enabled_p = 1; |
c906108c SS |
1673 | } |
1674 | else | |
1675 | while (*p) | |
1676 | { | |
1677 | p1 = p; | |
1678 | while (*p1 >= '0' && *p1 <= '9') | |
1679 | p1++; | |
1680 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
1681 | error ("Arguments must be display numbers."); | |
c5aa993b | 1682 | |
c906108c | 1683 | num = atoi (p); |
c5aa993b | 1684 | |
c906108c SS |
1685 | for (d = display_chain; d; d = d->next) |
1686 | if (d->number == num) | |
1687 | { | |
b5de0fa7 | 1688 | d->enabled_p = 1; |
c906108c SS |
1689 | goto win; |
1690 | } | |
1691 | printf_unfiltered ("No display number %d.\n", num); | |
1692 | win: | |
1693 | p = p1; | |
1694 | while (*p == ' ' || *p == '\t') | |
1695 | p++; | |
1696 | } | |
1697 | } | |
1698 | ||
c906108c | 1699 | static void |
fba45db2 | 1700 | disable_display_command (char *args, int from_tty) |
c906108c | 1701 | { |
52f0bd74 AC |
1702 | char *p = args; |
1703 | char *p1; | |
1704 | struct display *d; | |
c906108c SS |
1705 | |
1706 | if (p == 0) | |
1707 | { | |
1708 | for (d = display_chain; d; d = d->next) | |
b5de0fa7 | 1709 | d->enabled_p = 0; |
c906108c SS |
1710 | } |
1711 | else | |
1712 | while (*p) | |
1713 | { | |
1714 | p1 = p; | |
1715 | while (*p1 >= '0' && *p1 <= '9') | |
1716 | p1++; | |
1717 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
1718 | error ("Arguments must be display numbers."); | |
c5aa993b | 1719 | |
c906108c SS |
1720 | disable_display (atoi (p)); |
1721 | ||
1722 | p = p1; | |
1723 | while (*p == ' ' || *p == '\t') | |
1724 | p++; | |
1725 | } | |
1726 | } | |
c906108c | 1727 | \f |
c5aa993b | 1728 | |
c906108c SS |
1729 | /* Print the value in stack frame FRAME of a variable |
1730 | specified by a struct symbol. */ | |
1731 | ||
1732 | void | |
fba45db2 KB |
1733 | print_variable_value (struct symbol *var, struct frame_info *frame, |
1734 | struct ui_file *stream) | |
c906108c | 1735 | { |
3d6d86c6 | 1736 | struct value *val = read_var_value (var, frame); |
c906108c SS |
1737 | |
1738 | value_print (val, stream, 0, Val_pretty_default); | |
1739 | } | |
1740 | ||
c906108c | 1741 | static void |
fba45db2 | 1742 | printf_command (char *arg, int from_tty) |
c906108c | 1743 | { |
52f0bd74 AC |
1744 | char *f = NULL; |
1745 | char *s = arg; | |
c906108c | 1746 | char *string = NULL; |
3d6d86c6 | 1747 | struct value **val_args; |
c906108c SS |
1748 | char *substrings; |
1749 | char *current_substring; | |
1750 | int nargs = 0; | |
1751 | int allocated_args = 20; | |
1752 | struct cleanup *old_cleanups; | |
1753 | ||
f976f6d4 AC |
1754 | val_args = (struct value **) xmalloc (allocated_args |
1755 | * sizeof (struct value *)); | |
c13c43fd | 1756 | old_cleanups = make_cleanup (free_current_contents, &val_args); |
c906108c SS |
1757 | |
1758 | if (s == 0) | |
1759 | error_no_arg ("format-control string and values to print"); | |
1760 | ||
1761 | /* Skip white space before format string */ | |
c5aa993b JM |
1762 | while (*s == ' ' || *s == '\t') |
1763 | s++; | |
c906108c SS |
1764 | |
1765 | /* A format string should follow, enveloped in double quotes */ | |
1766 | if (*s++ != '"') | |
1767 | error ("Bad format string, missing '\"'."); | |
1768 | ||
1769 | /* Parse the format-control string and copy it into the string STRING, | |
1770 | processing some kinds of escape sequence. */ | |
1771 | ||
1772 | f = string = (char *) alloca (strlen (s) + 1); | |
1773 | ||
1774 | while (*s != '"') | |
1775 | { | |
1776 | int c = *s++; | |
1777 | switch (c) | |
1778 | { | |
1779 | case '\0': | |
1780 | error ("Bad format string, non-terminated '\"'."); | |
1781 | ||
1782 | case '\\': | |
1783 | switch (c = *s++) | |
1784 | { | |
1785 | case '\\': | |
1786 | *f++ = '\\'; | |
1787 | break; | |
1788 | case 'a': | |
c906108c | 1789 | *f++ = '\a'; |
c906108c SS |
1790 | break; |
1791 | case 'b': | |
1792 | *f++ = '\b'; | |
1793 | break; | |
1794 | case 'f': | |
1795 | *f++ = '\f'; | |
1796 | break; | |
1797 | case 'n': | |
1798 | *f++ = '\n'; | |
1799 | break; | |
1800 | case 'r': | |
1801 | *f++ = '\r'; | |
1802 | break; | |
1803 | case 't': | |
1804 | *f++ = '\t'; | |
1805 | break; | |
1806 | case 'v': | |
1807 | *f++ = '\v'; | |
1808 | break; | |
1809 | case '"': | |
1810 | *f++ = '"'; | |
1811 | break; | |
1812 | default: | |
1813 | /* ??? TODO: handle other escape sequences */ | |
1814 | error ("Unrecognized escape character \\%c in format string.", | |
1815 | c); | |
1816 | } | |
1817 | break; | |
1818 | ||
1819 | default: | |
1820 | *f++ = c; | |
1821 | } | |
1822 | } | |
1823 | ||
1824 | /* Skip over " and following space and comma. */ | |
1825 | s++; | |
1826 | *f++ = '\0'; | |
c5aa993b JM |
1827 | while (*s == ' ' || *s == '\t') |
1828 | s++; | |
c906108c SS |
1829 | |
1830 | if (*s != ',' && *s != 0) | |
1831 | error ("Invalid argument syntax"); | |
1832 | ||
c5aa993b JM |
1833 | if (*s == ',') |
1834 | s++; | |
1835 | while (*s == ' ' || *s == '\t') | |
1836 | s++; | |
c906108c SS |
1837 | |
1838 | /* Need extra space for the '\0's. Doubling the size is sufficient. */ | |
1839 | substrings = alloca (strlen (string) * 2); | |
1840 | current_substring = substrings; | |
1841 | ||
1842 | { | |
1843 | /* Now scan the string for %-specs and see what kinds of args they want. | |
1844 | argclass[I] classifies the %-specs so we can give printf_filtered | |
1845 | something of the right size. */ | |
1846 | ||
c5aa993b JM |
1847 | enum argclass |
1848 | { | |
1849 | no_arg, int_arg, string_arg, double_arg, long_long_arg | |
1850 | }; | |
c906108c SS |
1851 | enum argclass *argclass; |
1852 | enum argclass this_argclass; | |
1853 | char *last_arg; | |
1854 | int nargs_wanted; | |
1855 | int lcount; | |
1856 | int i; | |
1857 | ||
1858 | argclass = (enum argclass *) alloca (strlen (s) * sizeof *argclass); | |
1859 | nargs_wanted = 0; | |
1860 | f = string; | |
1861 | last_arg = string; | |
1862 | while (*f) | |
1863 | if (*f++ == '%') | |
1864 | { | |
1865 | lcount = 0; | |
c5aa993b | 1866 | while (strchr ("0123456789.hlL-+ #", *f)) |
c906108c SS |
1867 | { |
1868 | if (*f == 'l' || *f == 'L') | |
1869 | lcount++; | |
1870 | f++; | |
1871 | } | |
1872 | switch (*f) | |
1873 | { | |
1874 | case 's': | |
1875 | this_argclass = string_arg; | |
1876 | break; | |
1877 | ||
1878 | case 'e': | |
1879 | case 'f': | |
1880 | case 'g': | |
1881 | this_argclass = double_arg; | |
1882 | break; | |
1883 | ||
1884 | case '*': | |
1885 | error ("`*' not supported for precision or width in printf"); | |
1886 | ||
1887 | case 'n': | |
1888 | error ("Format specifier `n' not supported in printf"); | |
1889 | ||
1890 | case '%': | |
1891 | this_argclass = no_arg; | |
1892 | break; | |
1893 | ||
1894 | default: | |
1895 | if (lcount > 1) | |
1896 | this_argclass = long_long_arg; | |
1897 | else | |
1898 | this_argclass = int_arg; | |
1899 | break; | |
1900 | } | |
1901 | f++; | |
1902 | if (this_argclass != no_arg) | |
1903 | { | |
1904 | strncpy (current_substring, last_arg, f - last_arg); | |
1905 | current_substring += f - last_arg; | |
1906 | *current_substring++ = '\0'; | |
1907 | last_arg = f; | |
1908 | argclass[nargs_wanted++] = this_argclass; | |
1909 | } | |
1910 | } | |
1911 | ||
1912 | /* Now, parse all arguments and evaluate them. | |
1913 | Store the VALUEs in VAL_ARGS. */ | |
1914 | ||
1915 | while (*s != '\0') | |
1916 | { | |
1917 | char *s1; | |
1918 | if (nargs == allocated_args) | |
f976f6d4 AC |
1919 | val_args = (struct value **) xrealloc ((char *) val_args, |
1920 | (allocated_args *= 2) | |
1921 | * sizeof (struct value *)); | |
c906108c SS |
1922 | s1 = s; |
1923 | val_args[nargs] = parse_to_comma_and_eval (&s1); | |
c5aa993b | 1924 | |
c906108c SS |
1925 | /* If format string wants a float, unchecked-convert the value to |
1926 | floating point of the same size */ | |
c5aa993b | 1927 | |
c906108c SS |
1928 | if (argclass[nargs] == double_arg) |
1929 | { | |
1930 | struct type *type = VALUE_TYPE (val_args[nargs]); | |
1931 | if (TYPE_LENGTH (type) == sizeof (float)) | |
c5aa993b | 1932 | VALUE_TYPE (val_args[nargs]) = builtin_type_float; |
c906108c | 1933 | if (TYPE_LENGTH (type) == sizeof (double)) |
c5aa993b | 1934 | VALUE_TYPE (val_args[nargs]) = builtin_type_double; |
c906108c SS |
1935 | } |
1936 | nargs++; | |
1937 | s = s1; | |
1938 | if (*s == ',') | |
1939 | s++; | |
1940 | } | |
c5aa993b | 1941 | |
c906108c SS |
1942 | if (nargs != nargs_wanted) |
1943 | error ("Wrong number of arguments for specified format-string"); | |
1944 | ||
1945 | /* Now actually print them. */ | |
1946 | current_substring = substrings; | |
1947 | for (i = 0; i < nargs; i++) | |
1948 | { | |
1949 | switch (argclass[i]) | |
1950 | { | |
1951 | case string_arg: | |
1952 | { | |
1953 | char *str; | |
1954 | CORE_ADDR tem; | |
1955 | int j; | |
1aa20aa8 | 1956 | tem = value_as_address (val_args[i]); |
c906108c SS |
1957 | |
1958 | /* This is a %s argument. Find the length of the string. */ | |
c5aa993b | 1959 | for (j = 0;; j++) |
c906108c SS |
1960 | { |
1961 | char c; | |
1962 | QUIT; | |
d4b2399a | 1963 | read_memory (tem + j, &c, 1); |
c906108c SS |
1964 | if (c == 0) |
1965 | break; | |
1966 | } | |
1967 | ||
1968 | /* Copy the string contents into a string inside GDB. */ | |
1969 | str = (char *) alloca (j + 1); | |
7b92f6e1 MS |
1970 | if (j != 0) |
1971 | read_memory (tem, str, j); | |
c906108c SS |
1972 | str[j] = 0; |
1973 | ||
1974 | printf_filtered (current_substring, str); | |
1975 | } | |
1976 | break; | |
1977 | case double_arg: | |
1978 | { | |
1979 | double val = value_as_double (val_args[i]); | |
1980 | printf_filtered (current_substring, val); | |
1981 | break; | |
1982 | } | |
1983 | case long_long_arg: | |
1984 | #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG) | |
1985 | { | |
1986 | long long val = value_as_long (val_args[i]); | |
1987 | printf_filtered (current_substring, val); | |
1988 | break; | |
1989 | } | |
1990 | #else | |
1991 | error ("long long not supported in printf"); | |
1992 | #endif | |
1993 | case int_arg: | |
1994 | { | |
1995 | /* FIXME: there should be separate int_arg and long_arg. */ | |
1996 | long val = value_as_long (val_args[i]); | |
1997 | printf_filtered (current_substring, val); | |
1998 | break; | |
1999 | } | |
c5aa993b JM |
2000 | default: /* purecov: deadcode */ |
2001 | error ("internal error in printf_command"); /* purecov: deadcode */ | |
c906108c SS |
2002 | } |
2003 | /* Skip to the next substring. */ | |
2004 | current_substring += strlen (current_substring) + 1; | |
2005 | } | |
2006 | /* Print the portion of the format string after the last argument. */ | |
306d9ac5 | 2007 | puts_filtered (last_arg); |
c906108c SS |
2008 | } |
2009 | do_cleanups (old_cleanups); | |
2010 | } | |
c906108c | 2011 | |
c906108c | 2012 | void |
fba45db2 | 2013 | _initialize_printcmd (void) |
c906108c | 2014 | { |
c94fdfd0 EZ |
2015 | struct cmd_list_element *c; |
2016 | ||
c906108c SS |
2017 | current_display_number = -1; |
2018 | ||
2019 | add_info ("address", address_info, | |
c5aa993b | 2020 | "Describe where symbol SYM is stored."); |
c906108c | 2021 | |
c5aa993b | 2022 | add_info ("symbol", sym_info, |
c906108c SS |
2023 | "Describe what symbol is at location ADDR.\n\ |
2024 | Only for symbols with fixed locations (global or static scope)."); | |
2025 | ||
2026 | add_com ("x", class_vars, x_command, | |
2027 | concat ("Examine memory: x/FMT ADDRESS.\n\ | |
2028 | ADDRESS is an expression for the memory address to examine.\n\ | |
2029 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2030 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
2031 | t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n", | |
c5aa993b | 2032 | "Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ |
c906108c SS |
2033 | The specified number of objects of the specified size are printed\n\ |
2034 | according to the format.\n\n\ | |
2035 | Defaults for format and size letters are those previously used.\n\ | |
2036 | Default count is 1. Default address is following last thing printed\n\ | |
2037 | with this command or \"print\".", NULL)); | |
2038 | ||
c906108c SS |
2039 | #if 0 |
2040 | add_com ("whereis", class_vars, whereis_command, | |
2041 | "Print line number and file of definition of variable."); | |
2042 | #endif | |
c5aa993b | 2043 | |
c906108c SS |
2044 | add_info ("display", display_info, |
2045 | "Expressions to display when program stops, with code numbers."); | |
2046 | ||
2047 | add_cmd ("undisplay", class_vars, undisplay_command, | |
2048 | "Cancel some expressions to be displayed when program stops.\n\ | |
2049 | Arguments are the code numbers of the expressions to stop displaying.\n\ | |
2050 | No argument means cancel all automatic-display expressions.\n\ | |
2051 | \"delete display\" has the same effect as this command.\n\ | |
2052 | Do \"info display\" to see current list of code numbers.", | |
c5aa993b | 2053 | &cmdlist); |
c906108c SS |
2054 | |
2055 | add_com ("display", class_vars, display_command, | |
2056 | "Print value of expression EXP each time the program stops.\n\ | |
2057 | /FMT may be used before EXP as in the \"print\" command.\n\ | |
2058 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2059 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2060 | and examining is done as in the \"x\" command.\n\n\ | |
2061 | With no argument, display all currently requested auto-display expressions.\n\ | |
2062 | Use \"undisplay\" to cancel display requests previously made." | |
c5aa993b | 2063 | ); |
c906108c | 2064 | |
c5aa993b | 2065 | add_cmd ("display", class_vars, enable_display, |
c906108c SS |
2066 | "Enable some expressions to be displayed when program stops.\n\ |
2067 | Arguments are the code numbers of the expressions to resume displaying.\n\ | |
2068 | No argument means enable all automatic-display expressions.\n\ | |
2069 | Do \"info display\" to see current list of code numbers.", &enablelist); | |
2070 | ||
c5aa993b | 2071 | add_cmd ("display", class_vars, disable_display_command, |
c906108c SS |
2072 | "Disable some expressions to be displayed when program stops.\n\ |
2073 | Arguments are the code numbers of the expressions to stop displaying.\n\ | |
2074 | No argument means disable all automatic-display expressions.\n\ | |
2075 | Do \"info display\" to see current list of code numbers.", &disablelist); | |
2076 | ||
c5aa993b | 2077 | add_cmd ("display", class_vars, undisplay_command, |
c906108c SS |
2078 | "Cancel some expressions to be displayed when program stops.\n\ |
2079 | Arguments are the code numbers of the expressions to stop displaying.\n\ | |
2080 | No argument means cancel all automatic-display expressions.\n\ | |
2081 | Do \"info display\" to see current list of code numbers.", &deletelist); | |
2082 | ||
2083 | add_com ("printf", class_vars, printf_command, | |
c5aa993b | 2084 | "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ |
c906108c SS |
2085 | This is useful for formatted output in user-defined commands."); |
2086 | ||
2087 | add_com ("output", class_vars, output_command, | |
2088 | "Like \"print\" but don't put in value history and don't print newline.\n\ | |
2089 | This is useful in user-defined commands."); | |
2090 | ||
2091 | add_prefix_cmd ("set", class_vars, set_command, | |
c5aa993b | 2092 | concat ("Evaluate expression EXP and assign result to variable VAR, using assignment\n\ |
c906108c SS |
2093 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2094 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2095 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2096 | variable in the program being debugged. EXP is any valid expression.\n", | |
c5aa993b | 2097 | "Use \"set variable\" for variables with names identical to set subcommands.\n\ |
c906108c SS |
2098 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
2099 | You can see these environment settings with the \"show\" command.", NULL), | |
c5aa993b | 2100 | &setlist, "set ", 1, &cmdlist); |
c906108c | 2101 | if (dbx_commands) |
c5aa993b | 2102 | add_com ("assign", class_vars, set_command, concat ("Evaluate expression \ |
c906108c SS |
2103 | EXP and assign result to variable VAR, using assignment\n\ |
2104 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ | |
2105 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2106 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2107 | variable in the program being debugged. EXP is any valid expression.\n", | |
c5aa993b | 2108 | "Use \"set variable\" for variables with names identical to set subcommands.\n\ |
c906108c SS |
2109 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
2110 | You can see these environment settings with the \"show\" command.", NULL)); | |
2111 | ||
2112 | /* "call" is the same as "set", but handy for dbx users to call fns. */ | |
c94fdfd0 EZ |
2113 | c = add_com ("call", class_vars, call_command, |
2114 | "Call a function in the program.\n\ | |
c906108c SS |
2115 | The argument is the function name and arguments, in the notation of the\n\ |
2116 | current working language. The result is printed and saved in the value\n\ | |
2117 | history, if it is not void."); | |
5ba2abeb | 2118 | set_cmd_completer (c, location_completer); |
c906108c SS |
2119 | |
2120 | add_cmd ("variable", class_vars, set_command, | |
c5aa993b | 2121 | "Evaluate expression EXP and assign result to variable VAR, using assignment\n\ |
c906108c SS |
2122 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2123 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2124 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2125 | variable in the program being debugged. EXP is any valid expression.\n\ | |
2126 | This may usually be abbreviated to simply \"set\".", | |
c5aa993b | 2127 | &setlist); |
c906108c | 2128 | |
c94fdfd0 | 2129 | c = add_com ("print", class_vars, print_command, |
c906108c SS |
2130 | concat ("Print value of expression EXP.\n\ |
2131 | Variables accessible are those of the lexical environment of the selected\n\ | |
2132 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2133 | \n\ | |
2134 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2135 | $$NUM refers to NUM'th value back from the last one.\n\ | |
2136 | Names starting with $ refer to registers (with the values they would have\n", | |
c5aa993b | 2137 | "if the program were to return to the stack frame now selected, restoring\n\ |
c906108c SS |
2138 | all registers saved by frames farther in) or else to debugger\n\ |
2139 | \"convenience\" variables (any such name not a known register).\n\ | |
2140 | Use assignment expressions to give values to convenience variables.\n", | |
2141 | "\n\ | |
2142 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ | |
2143 | @ is a binary operator for treating consecutive data objects\n\ | |
2144 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2145 | element is FOO, whose second element is stored in the space following\n\ | |
2146 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
2147 | resides in memory.\n", | |
2148 | "\n\ | |
2149 | EXP may be preceded with /FMT, where FMT is a format letter\n\ | |
2150 | but no count or size letter (see \"x\" command).", NULL)); | |
5ba2abeb | 2151 | set_cmd_completer (c, location_completer); |
c906108c SS |
2152 | add_com_alias ("p", "print", class_vars, 1); |
2153 | ||
c94fdfd0 | 2154 | c = add_com ("inspect", class_vars, inspect_command, |
c5aa993b | 2155 | "Same as \"print\" command, except that if you are running in the epoch\n\ |
c906108c | 2156 | environment, the value is printed in its own window."); |
5ba2abeb | 2157 | set_cmd_completer (c, location_completer); |
c906108c SS |
2158 | |
2159 | add_show_from_set ( | |
c5aa993b JM |
2160 | add_set_cmd ("max-symbolic-offset", no_class, var_uinteger, |
2161 | (char *) &max_symbolic_offset, | |
2162 | "Set the largest offset that will be printed in <symbol+1234> form.", | |
2163 | &setprintlist), | |
2164 | &showprintlist); | |
c906108c | 2165 | add_show_from_set ( |
c5aa993b JM |
2166 | add_set_cmd ("symbol-filename", no_class, var_boolean, |
2167 | (char *) &print_symbol_filename, | |
2168 | "Set printing of source filename and line number with <symbol>.", | |
2169 | &setprintlist), | |
2170 | &showprintlist); | |
c906108c SS |
2171 | |
2172 | /* For examine/instruction a single byte quantity is specified as | |
2173 | the data. This avoids problems with value_at_lazy() requiring a | |
2174 | valid data type (and rejecting VOID). */ | |
2175 | examine_i_type = init_type (TYPE_CODE_INT, 1, 0, "examine_i_type", NULL); | |
2176 | ||
2177 | examine_b_type = init_type (TYPE_CODE_INT, 1, 0, "examine_b_type", NULL); | |
2178 | examine_h_type = init_type (TYPE_CODE_INT, 2, 0, "examine_h_type", NULL); | |
2179 | examine_w_type = init_type (TYPE_CODE_INT, 4, 0, "examine_w_type", NULL); | |
2180 | examine_g_type = init_type (TYPE_CODE_INT, 8, 0, "examine_g_type", NULL); | |
2181 | ||
2182 | } |