Commit | Line | Data |
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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" |
c906108c SS |
45 | |
46 | extern int asm_demangle; /* Whether to demangle syms in asm printouts */ | |
47 | extern int addressprint; /* Whether to print hex addresses in HLL " */ | |
48 | ||
49 | struct format_data | |
c5aa993b JM |
50 | { |
51 | int count; | |
52 | char format; | |
53 | char size; | |
54 | }; | |
c906108c SS |
55 | |
56 | /* Last specified output format. */ | |
57 | ||
58 | static char last_format = 'x'; | |
59 | ||
60 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
61 | ||
62 | static char last_size = 'w'; | |
63 | ||
64 | /* Default address to examine next. */ | |
65 | ||
66 | static CORE_ADDR next_address; | |
67 | ||
68 | /* Default section to examine next. */ | |
69 | ||
70 | static asection *next_section; | |
71 | ||
72 | /* Last address examined. */ | |
73 | ||
74 | static CORE_ADDR last_examine_address; | |
75 | ||
76 | /* Contents of last address examined. | |
77 | This is not valid past the end of the `x' command! */ | |
78 | ||
3d6d86c6 | 79 | static struct value *last_examine_value; |
c906108c SS |
80 | |
81 | /* Largest offset between a symbolic value and an address, that will be | |
82 | printed as `0x1234 <symbol+offset>'. */ | |
83 | ||
84 | static unsigned int max_symbolic_offset = UINT_MAX; | |
85 | ||
86 | /* Append the source filename and linenumber of the symbol when | |
87 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
88 | static int print_symbol_filename = 0; | |
89 | ||
90 | /* Number of auto-display expression currently being displayed. | |
91 | So that we can disable it if we get an error or a signal within it. | |
92 | -1 when not doing one. */ | |
93 | ||
94 | int current_display_number; | |
95 | ||
96 | /* Flag to low-level print routines that this value is being printed | |
97 | in an epoch window. We'd like to pass this as a parameter, but | |
98 | every routine would need to take it. Perhaps we can encapsulate | |
99 | this in the I/O stream once we have GNU stdio. */ | |
100 | ||
101 | int inspect_it = 0; | |
102 | ||
103 | struct display | |
c5aa993b JM |
104 | { |
105 | /* Chain link to next auto-display item. */ | |
106 | struct display *next; | |
107 | /* Expression to be evaluated and displayed. */ | |
108 | struct expression *exp; | |
109 | /* Item number of this auto-display item. */ | |
110 | int number; | |
111 | /* Display format specified. */ | |
112 | struct format_data format; | |
113 | /* Innermost block required by this expression when evaluated */ | |
114 | struct block *block; | |
115 | /* Status of this display (enabled or disabled) */ | |
b5de0fa7 | 116 | int enabled_p; |
c5aa993b | 117 | }; |
c906108c SS |
118 | |
119 | /* Chain of expressions whose values should be displayed | |
120 | automatically each time the program stops. */ | |
121 | ||
122 | static struct display *display_chain; | |
123 | ||
124 | static int display_number; | |
125 | ||
126 | /* Prototypes for exported functions. */ | |
127 | ||
a14ed312 | 128 | void output_command (char *, int); |
c906108c | 129 | |
a14ed312 | 130 | void _initialize_printcmd (void); |
c906108c SS |
131 | |
132 | /* Prototypes for local functions. */ | |
133 | ||
a14ed312 | 134 | static void delete_display (int); |
c906108c | 135 | |
a14ed312 | 136 | static void enable_display (char *, int); |
c906108c | 137 | |
a14ed312 | 138 | static void disable_display_command (char *, int); |
c906108c | 139 | |
a14ed312 | 140 | static void printf_command (char *, int); |
c906108c | 141 | |
d9fcf2fb JM |
142 | static void print_frame_nameless_args (struct frame_info *, long, |
143 | int, int, struct ui_file *); | |
c906108c | 144 | |
a14ed312 | 145 | static void display_info (char *, int); |
c906108c | 146 | |
a14ed312 | 147 | static void do_one_display (struct display *); |
c906108c | 148 | |
a14ed312 | 149 | static void undisplay_command (char *, int); |
c906108c | 150 | |
a14ed312 | 151 | static void free_display (struct display *); |
c906108c | 152 | |
a14ed312 | 153 | static void display_command (char *, int); |
c906108c | 154 | |
a14ed312 | 155 | void x_command (char *, int); |
c906108c | 156 | |
a14ed312 | 157 | static void address_info (char *, int); |
c906108c | 158 | |
a14ed312 | 159 | static void set_command (char *, int); |
c906108c | 160 | |
a14ed312 | 161 | static void call_command (char *, int); |
c906108c | 162 | |
a14ed312 | 163 | static void inspect_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static void print_command (char *, int); |
c906108c | 166 | |
a14ed312 | 167 | static void print_command_1 (char *, int, int); |
c906108c | 168 | |
a14ed312 | 169 | static void validate_format (struct format_data, char *); |
c906108c | 170 | |
a14ed312 KB |
171 | static void do_examine (struct format_data, CORE_ADDR addr, |
172 | asection * section); | |
c906108c | 173 | |
3d6d86c6 | 174 | static void print_formatted (struct value *, int, int, struct ui_file *); |
c906108c | 175 | |
a14ed312 | 176 | static struct format_data decode_format (char **, int, int); |
c906108c | 177 | |
d9fcf2fb | 178 | static int print_insn (CORE_ADDR, struct ui_file *); |
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; | |
197 | register char *p = *string_ptr; | |
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 | |
3d6d86c6 | 282 | print_formatted (struct value *val, register 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) | |
2acceee2 | 313 | + 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 | |
322 | || TYPE_CODE (type) == TYPE_CODE_UNION) | |
c5aa993b JM |
323 | /* If format is 0, use the 'natural' format for |
324 | * that type of value. If the type is non-scalar, | |
325 | * we have to use language rules to print it as | |
326 | * a series of scalars. | |
327 | */ | |
2acceee2 | 328 | value_print (val, stream, format, Val_pretty_default); |
c906108c | 329 | else |
c5aa993b JM |
330 | /* User specified format, so don't look to the |
331 | * the type to tell us what to do. | |
332 | */ | |
c906108c | 333 | print_scalar_formatted (VALUE_CONTENTS (val), type, |
2acceee2 | 334 | format, size, stream); |
c906108c SS |
335 | } |
336 | } | |
337 | ||
338 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, | |
339 | according to letters FORMAT and SIZE on STREAM. | |
340 | FORMAT may not be zero. Formats s and i are not supported at this level. | |
341 | ||
342 | This is how the elements of an array or structure are printed | |
343 | with a format. */ | |
344 | ||
345 | void | |
a2867626 | 346 | print_scalar_formatted (void *valaddr, struct type *type, int format, int size, |
fba45db2 | 347 | struct ui_file *stream) |
c906108c SS |
348 | { |
349 | LONGEST val_long; | |
350 | unsigned int len = TYPE_LENGTH (type); | |
351 | ||
352 | if (len > sizeof (LONGEST) | |
353 | && (format == 't' | |
354 | || format == 'c' | |
355 | || format == 'o' | |
356 | || format == 'u' | |
357 | || format == 'd' | |
358 | || format == 'x')) | |
359 | { | |
c5aa993b JM |
360 | if (!TYPE_UNSIGNED (type) |
361 | || !extract_long_unsigned_integer (valaddr, len, &val_long)) | |
c906108c SS |
362 | { |
363 | /* We can't print it normally, but we can print it in hex. | |
364 | Printing it in the wrong radix is more useful than saying | |
365 | "use /x, you dummy". */ | |
366 | /* FIXME: we could also do octal or binary if that was the | |
367 | desired format. */ | |
368 | /* FIXME: we should be using the size field to give us a | |
369 | minimum field width to print. */ | |
370 | ||
c5aa993b JM |
371 | if (format == 'o') |
372 | print_octal_chars (stream, valaddr, len); | |
373 | else if (format == 'd') | |
374 | print_decimal_chars (stream, valaddr, len); | |
375 | else if (format == 't') | |
376 | print_binary_chars (stream, valaddr, len); | |
377 | else | |
378 | /* replace with call to print_hex_chars? Looks | |
379 | like val_print_type_code_int is redoing | |
380 | work. - edie */ | |
c906108c | 381 | |
c5aa993b | 382 | val_print_type_code_int (type, valaddr, stream); |
c906108c SS |
383 | |
384 | return; | |
385 | } | |
386 | ||
387 | /* If we get here, extract_long_unsigned_integer set val_long. */ | |
388 | } | |
389 | else if (format != 'f') | |
390 | val_long = unpack_long (type, valaddr); | |
391 | ||
ef166cf4 | 392 | /* If the value is a pointer, and pointers and addresses are not the |
d0aee0c4 FF |
393 | same, then at this point, the value's length (in target bytes) is |
394 | TARGET_ADDR_BIT/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */ | |
ef166cf4 | 395 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
d0aee0c4 | 396 | len = TARGET_ADDR_BIT / TARGET_CHAR_BIT; |
ef166cf4 | 397 | |
c906108c SS |
398 | /* If we are printing it as unsigned, truncate it in case it is actually |
399 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
400 | (if shorts are 16 bits) instead of 4294967295). */ | |
401 | if (format != 'd') | |
402 | { | |
403 | if (len < sizeof (LONGEST)) | |
404 | val_long &= ((LONGEST) 1 << HOST_CHAR_BIT * len) - 1; | |
405 | } | |
406 | ||
407 | switch (format) | |
408 | { | |
409 | case 'x': | |
410 | if (!size) | |
411 | { | |
412 | /* no size specified, like in print. Print varying # of digits. */ | |
413 | print_longest (stream, 'x', 1, val_long); | |
414 | } | |
415 | else | |
416 | switch (size) | |
417 | { | |
418 | case 'b': | |
419 | case 'h': | |
420 | case 'w': | |
421 | case 'g': | |
422 | print_longest (stream, size, 1, val_long); | |
423 | break; | |
424 | default: | |
425 | error ("Undefined output size \"%c\".", size); | |
426 | } | |
427 | break; | |
428 | ||
429 | case 'd': | |
430 | print_longest (stream, 'd', 1, val_long); | |
431 | break; | |
432 | ||
433 | case 'u': | |
434 | print_longest (stream, 'u', 0, val_long); | |
435 | break; | |
436 | ||
437 | case 'o': | |
438 | if (val_long) | |
439 | print_longest (stream, 'o', 1, val_long); | |
440 | else | |
441 | fprintf_filtered (stream, "0"); | |
442 | break; | |
443 | ||
444 | case 'a': | |
593de6a6 | 445 | { |
593de6a6 | 446 | CORE_ADDR addr = unpack_pointer (type, valaddr); |
593de6a6 PS |
447 | print_address (addr, stream); |
448 | } | |
c906108c SS |
449 | break; |
450 | ||
451 | case 'c': | |
9e0b60a8 JM |
452 | value_print (value_from_longest (builtin_type_true_char, val_long), |
453 | stream, 0, Val_pretty_default); | |
c906108c SS |
454 | break; |
455 | ||
456 | case 'f': | |
f4697836 | 457 | if (len == TYPE_LENGTH (builtin_type_float)) |
664cccae | 458 | type = builtin_type_float; |
f4697836 | 459 | else if (len == TYPE_LENGTH (builtin_type_double)) |
664cccae | 460 | type = builtin_type_double; |
f4697836 JB |
461 | else if (len == TYPE_LENGTH (builtin_type_long_double)) |
462 | type = builtin_type_long_double; | |
c906108c SS |
463 | print_floating (valaddr, type, stream); |
464 | break; | |
465 | ||
466 | case 0: | |
e1e9e218 | 467 | internal_error (__FILE__, __LINE__, "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: | |
495 | error ("Undefined output size \"%c\".", size); | |
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 | } | |
c5aa993b | 511 | strcpy (buf, local_binary_format_prefix ()); |
c906108c | 512 | strcat (buf, cp); |
c5aa993b JM |
513 | strcat (buf, local_binary_format_suffix ()); |
514 | fprintf_filtered (stream, buf); | |
c906108c SS |
515 | } |
516 | break; | |
517 | ||
518 | default: | |
519 | error ("Undefined output format \"%c\".", format); | |
520 | } | |
521 | } | |
522 | ||
523 | /* Specify default address for `x' command. | |
524 | `info lines' uses this. */ | |
525 | ||
526 | void | |
fba45db2 | 527 | set_next_address (CORE_ADDR addr) |
c906108c SS |
528 | { |
529 | next_address = addr; | |
530 | ||
531 | /* Make address available to the user as $_. */ | |
532 | set_internalvar (lookup_internalvar ("_"), | |
4478b372 JB |
533 | value_from_pointer (lookup_pointer_type (builtin_type_void), |
534 | addr)); | |
c906108c SS |
535 | } |
536 | ||
537 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
538 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
539 | Optionally also print source file and line number, if available. | |
540 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
541 | or to interpret it as a possible C++ name and convert it back to source | |
542 | form. However note that DO_DEMANGLE can be overridden by the specific | |
543 | settings of the demangle and asm_demangle variables. */ | |
544 | ||
545 | void | |
fba45db2 KB |
546 | print_address_symbolic (CORE_ADDR addr, struct ui_file *stream, int do_demangle, |
547 | char *leadin) | |
dfcd3bfb JM |
548 | { |
549 | char *name = NULL; | |
550 | char *filename = NULL; | |
551 | int unmapped = 0; | |
552 | int offset = 0; | |
553 | int line = 0; | |
554 | ||
2f9429ae AC |
555 | /* throw away both name and filename */ |
556 | struct cleanup *cleanup_chain = make_cleanup (free_current_contents, &name); | |
557 | make_cleanup (free_current_contents, &filename); | |
dfcd3bfb JM |
558 | |
559 | if (build_address_symbolic (addr, do_demangle, &name, &offset, &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; | |
608 | struct symtab *symtab = 0; | |
609 | CORE_ADDR name_location = 0; | |
c906108c | 610 | asection *section = 0; |
dfcd3bfb JM |
611 | char *name_temp = ""; |
612 | ||
613 | /* Let's say it is unmapped. */ | |
614 | *unmapped = 0; | |
c906108c | 615 | |
dfcd3bfb JM |
616 | /* Determine if the address is in an overlay, and whether it is |
617 | mapped. */ | |
c906108c SS |
618 | if (overlay_debugging) |
619 | { | |
620 | section = find_pc_overlay (addr); | |
621 | if (pc_in_unmapped_range (addr, section)) | |
622 | { | |
dfcd3bfb | 623 | *unmapped = 1; |
c906108c SS |
624 | addr = overlay_mapped_address (addr, section); |
625 | } | |
626 | } | |
627 | ||
c906108c SS |
628 | /* First try to find the address in the symbol table, then |
629 | in the minsyms. Take the closest one. */ | |
630 | ||
631 | /* This is defective in the sense that it only finds text symbols. So | |
632 | really this is kind of pointless--we should make sure that the | |
633 | minimal symbols have everything we need (by changing that we could | |
634 | save some memory, but for many debug format--ELF/DWARF or | |
635 | anything/stabs--it would be inconvenient to eliminate those minimal | |
636 | symbols anyway). */ | |
637 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section); | |
638 | symbol = find_pc_sect_function (addr, section); | |
639 | ||
640 | if (symbol) | |
641 | { | |
642 | name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol)); | |
406fc7fb | 643 | if (do_demangle || asm_demangle) |
de5ad195 | 644 | name_temp = SYMBOL_PRINT_NAME (symbol); |
c906108c | 645 | else |
22abf04a | 646 | name_temp = DEPRECATED_SYMBOL_NAME (symbol); |
c906108c SS |
647 | } |
648 | ||
649 | if (msymbol != NULL) | |
650 | { | |
651 | if (SYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL) | |
652 | { | |
653 | /* The msymbol is closer to the address than the symbol; | |
654 | use the msymbol instead. */ | |
655 | symbol = 0; | |
656 | symtab = 0; | |
657 | name_location = SYMBOL_VALUE_ADDRESS (msymbol); | |
406fc7fb | 658 | if (do_demangle || asm_demangle) |
de5ad195 | 659 | name_temp = SYMBOL_PRINT_NAME (msymbol); |
c906108c | 660 | else |
22abf04a | 661 | name_temp = DEPRECATED_SYMBOL_NAME (msymbol); |
c906108c SS |
662 | } |
663 | } | |
664 | if (symbol == NULL && msymbol == NULL) | |
dfcd3bfb | 665 | return 1; |
c906108c | 666 | |
c906108c SS |
667 | /* If the nearest symbol is too far away, don't print anything symbolic. */ |
668 | ||
669 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
670 | CORE_ADDR. But when we detect unsigned wraparound in the | |
671 | CORE_ADDR math, we ignore this test and print the offset, | |
672 | because addr+max_symbolic_offset has wrapped through the end | |
673 | of the address space back to the beginning, giving bogus comparison. */ | |
674 | if (addr > name_location + max_symbolic_offset | |
675 | && name_location + max_symbolic_offset > name_location) | |
dfcd3bfb | 676 | return 1; |
c906108c | 677 | |
dfcd3bfb JM |
678 | *offset = addr - name_location; |
679 | ||
680 | *name = xstrdup (name_temp); | |
c906108c | 681 | |
c906108c SS |
682 | if (print_symbol_filename) |
683 | { | |
684 | struct symtab_and_line sal; | |
685 | ||
686 | sal = find_pc_sect_line (addr, section, 0); | |
687 | ||
688 | if (sal.symtab) | |
dfcd3bfb JM |
689 | { |
690 | *filename = xstrdup (sal.symtab->filename); | |
691 | *line = sal.line; | |
692 | } | |
c906108c | 693 | else if (symtab && symbol && symbol->line) |
dfcd3bfb JM |
694 | { |
695 | *filename = xstrdup (symtab->filename); | |
696 | *line = symbol->line; | |
697 | } | |
c906108c | 698 | else if (symtab) |
dfcd3bfb JM |
699 | { |
700 | *filename = xstrdup (symtab->filename); | |
701 | *line = -1; | |
702 | } | |
c906108c | 703 | } |
dfcd3bfb | 704 | return 0; |
c906108c SS |
705 | } |
706 | ||
c906108c SS |
707 | /* Print address ADDR on STREAM. USE_LOCAL means the same thing as for |
708 | print_longest. */ | |
709 | void | |
fba45db2 | 710 | print_address_numeric (CORE_ADDR addr, int use_local, struct ui_file *stream) |
c906108c | 711 | { |
c0d8fd9a | 712 | /* Truncate address to the size of a target address, avoiding shifts |
e2ad119d | 713 | larger or equal than the width of a CORE_ADDR. The local |
c0d8fd9a MS |
714 | variable ADDR_BIT stops the compiler reporting a shift overflow |
715 | when it won't occur. */ | |
e2ad119d AC |
716 | /* NOTE: This assumes that the significant address information is |
717 | kept in the least significant bits of ADDR - the upper bits were | |
718 | either zero or sign extended. Should ADDRESS_TO_POINTER() or | |
719 | some ADDRESS_TO_PRINTABLE() be used to do the conversion? */ | |
c0d8fd9a | 720 | |
52204a0b | 721 | int addr_bit = TARGET_ADDR_BIT; |
c0d8fd9a | 722 | |
52204a0b DT |
723 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) |
724 | addr &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
c906108c SS |
725 | print_longest (stream, 'x', use_local, (ULONGEST) addr); |
726 | } | |
727 | ||
728 | /* Print address ADDR symbolically on STREAM. | |
729 | First print it as a number. Then perhaps print | |
730 | <SYMBOL + OFFSET> after the number. */ | |
731 | ||
732 | void | |
fba45db2 | 733 | print_address (CORE_ADDR addr, struct ui_file *stream) |
c906108c SS |
734 | { |
735 | print_address_numeric (addr, 1, stream); | |
736 | print_address_symbolic (addr, stream, asm_demangle, " "); | |
737 | } | |
738 | ||
739 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE | |
740 | controls whether to print the symbolic name "raw" or demangled. | |
741 | Global setting "addressprint" controls whether to print hex address | |
742 | or not. */ | |
743 | ||
744 | void | |
fba45db2 | 745 | print_address_demangle (CORE_ADDR addr, struct ui_file *stream, int do_demangle) |
c906108c SS |
746 | { |
747 | if (addr == 0) | |
748 | { | |
749 | fprintf_filtered (stream, "0"); | |
750 | } | |
751 | else if (addressprint) | |
752 | { | |
753 | print_address_numeric (addr, 1, stream); | |
754 | print_address_symbolic (addr, stream, do_demangle, " "); | |
755 | } | |
756 | else | |
757 | { | |
758 | print_address_symbolic (addr, stream, do_demangle, ""); | |
759 | } | |
760 | } | |
761 | \f | |
762 | ||
763 | /* These are the types that $__ will get after an examine command of one | |
764 | of these sizes. */ | |
765 | ||
766 | static struct type *examine_i_type; | |
767 | ||
768 | static struct type *examine_b_type; | |
769 | static struct type *examine_h_type; | |
770 | static struct type *examine_w_type; | |
771 | static struct type *examine_g_type; | |
772 | ||
773 | /* Examine data at address ADDR in format FMT. | |
774 | Fetch it from memory and print on gdb_stdout. */ | |
775 | ||
776 | static void | |
fba45db2 | 777 | do_examine (struct format_data fmt, CORE_ADDR addr, asection *sect) |
c906108c SS |
778 | { |
779 | register char format = 0; | |
780 | register char size; | |
781 | register int count = 1; | |
782 | struct type *val_type = NULL; | |
783 | register int i; | |
784 | register int maxelts; | |
785 | ||
786 | format = fmt.format; | |
787 | size = fmt.size; | |
788 | count = fmt.count; | |
789 | next_address = addr; | |
790 | next_section = sect; | |
791 | ||
792 | /* String or instruction format implies fetch single bytes | |
793 | regardless of the specified size. */ | |
794 | if (format == 's' || format == 'i') | |
795 | size = 'b'; | |
796 | ||
797 | if (format == 'i') | |
798 | val_type = examine_i_type; | |
799 | else if (size == 'b') | |
800 | val_type = examine_b_type; | |
801 | else if (size == 'h') | |
802 | val_type = examine_h_type; | |
803 | else if (size == 'w') | |
804 | val_type = examine_w_type; | |
805 | else if (size == 'g') | |
806 | val_type = examine_g_type; | |
807 | ||
808 | maxelts = 8; | |
809 | if (size == 'w') | |
810 | maxelts = 4; | |
811 | if (size == 'g') | |
812 | maxelts = 2; | |
813 | if (format == 's' || format == 'i') | |
814 | maxelts = 1; | |
815 | ||
816 | /* Print as many objects as specified in COUNT, at most maxelts per line, | |
817 | with the address of the next one at the start of each line. */ | |
818 | ||
819 | while (count > 0) | |
820 | { | |
821 | QUIT; | |
822 | print_address (next_address, gdb_stdout); | |
823 | printf_filtered (":"); | |
824 | for (i = maxelts; | |
825 | i > 0 && count > 0; | |
826 | i--, count--) | |
827 | { | |
828 | printf_filtered ("\t"); | |
829 | /* Note that print_formatted sets next_address for the next | |
830 | object. */ | |
831 | last_examine_address = next_address; | |
832 | ||
833 | if (last_examine_value) | |
834 | value_free (last_examine_value); | |
835 | ||
836 | /* The value to be displayed is not fetched greedily. | |
c5aa993b JM |
837 | Instead, to avoid the posibility of a fetched value not |
838 | being used, its retreval is delayed until the print code | |
839 | uses it. When examining an instruction stream, the | |
840 | disassembler will perform its own memory fetch using just | |
841 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
842 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
843 | is left with the byte sequence from the last complete | |
844 | instruction fetched from memory? */ | |
c906108c SS |
845 | last_examine_value = value_at_lazy (val_type, next_address, sect); |
846 | ||
847 | if (last_examine_value) | |
848 | release_value (last_examine_value); | |
849 | ||
2acceee2 | 850 | print_formatted (last_examine_value, format, size, gdb_stdout); |
c906108c SS |
851 | } |
852 | printf_filtered ("\n"); | |
853 | gdb_flush (gdb_stdout); | |
854 | } | |
855 | } | |
856 | \f | |
857 | static void | |
fba45db2 | 858 | validate_format (struct format_data fmt, char *cmdname) |
c906108c SS |
859 | { |
860 | if (fmt.size != 0) | |
861 | error ("Size letters are meaningless in \"%s\" command.", cmdname); | |
862 | if (fmt.count != 1) | |
863 | error ("Item count other than 1 is meaningless in \"%s\" command.", | |
864 | cmdname); | |
865 | if (fmt.format == 'i' || fmt.format == 's') | |
866 | error ("Format letter \"%c\" is meaningless in \"%s\" command.", | |
867 | fmt.format, cmdname); | |
868 | } | |
869 | ||
870 | /* Evaluate string EXP as an expression in the current language and | |
c5aa993b JM |
871 | print the resulting value. EXP may contain a format specifier as the |
872 | first argument ("/x myvar" for example, to print myvar in hex). | |
873 | */ | |
c906108c SS |
874 | |
875 | static void | |
fba45db2 | 876 | print_command_1 (char *exp, int inspect, int voidprint) |
c906108c SS |
877 | { |
878 | struct expression *expr; | |
879 | register struct cleanup *old_chain = 0; | |
880 | register char format = 0; | |
3d6d86c6 | 881 | struct value *val; |
c906108c SS |
882 | struct format_data fmt; |
883 | int cleanup = 0; | |
884 | ||
885 | /* Pass inspect flag to the rest of the print routines in a global (sigh). */ | |
886 | inspect_it = inspect; | |
887 | ||
888 | if (exp && *exp == '/') | |
889 | { | |
890 | exp++; | |
891 | fmt = decode_format (&exp, last_format, 0); | |
892 | validate_format (fmt, "print"); | |
893 | last_format = format = fmt.format; | |
894 | } | |
895 | else | |
896 | { | |
897 | fmt.count = 1; | |
898 | fmt.format = 0; | |
899 | fmt.size = 0; | |
900 | } | |
901 | ||
902 | if (exp && *exp) | |
903 | { | |
c906108c SS |
904 | struct type *type; |
905 | expr = parse_expression (exp); | |
c13c43fd | 906 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
907 | cleanup = 1; |
908 | val = evaluate_expression (expr); | |
c906108c SS |
909 | } |
910 | else | |
911 | val = access_value_history (0); | |
912 | ||
913 | if (voidprint || (val && VALUE_TYPE (val) && | |
c5aa993b | 914 | TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_VOID)) |
c906108c SS |
915 | { |
916 | int histindex = record_latest_value (val); | |
917 | ||
918 | if (histindex >= 0) | |
919 | annotate_value_history_begin (histindex, VALUE_TYPE (val)); | |
920 | else | |
921 | annotate_value_begin (VALUE_TYPE (val)); | |
922 | ||
923 | if (inspect) | |
924 | printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"", exp, histindex); | |
c5aa993b JM |
925 | else if (histindex >= 0) |
926 | printf_filtered ("$%d = ", histindex); | |
c906108c SS |
927 | |
928 | if (histindex >= 0) | |
929 | annotate_value_history_value (); | |
930 | ||
2acceee2 | 931 | print_formatted (val, format, fmt.size, gdb_stdout); |
c906108c SS |
932 | printf_filtered ("\n"); |
933 | ||
934 | if (histindex >= 0) | |
935 | annotate_value_history_end (); | |
936 | else | |
937 | annotate_value_end (); | |
938 | ||
939 | if (inspect) | |
c5aa993b | 940 | printf_unfiltered ("\") )\030"); |
c906108c SS |
941 | } |
942 | ||
943 | if (cleanup) | |
944 | do_cleanups (old_chain); | |
c5aa993b | 945 | inspect_it = 0; /* Reset print routines to normal */ |
c906108c SS |
946 | } |
947 | ||
948 | /* ARGSUSED */ | |
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 */ | |
956 | /* ARGSUSED */ | |
957 | static void | |
fba45db2 | 958 | inspect_command (char *exp, int from_tty) |
c906108c SS |
959 | { |
960 | extern int epoch_interface; | |
961 | ||
962 | print_command_1 (exp, epoch_interface, 1); | |
963 | } | |
964 | ||
965 | /* Same as print, except it doesn't print void results. */ | |
966 | /* ARGSUSED */ | |
967 | static void | |
fba45db2 | 968 | call_command (char *exp, int from_tty) |
c906108c SS |
969 | { |
970 | print_command_1 (exp, 0, 0); | |
971 | } | |
972 | ||
973 | /* ARGSUSED */ | |
974 | void | |
fba45db2 | 975 | output_command (char *exp, int from_tty) |
c906108c SS |
976 | { |
977 | struct expression *expr; | |
978 | register struct cleanup *old_chain; | |
979 | register char format = 0; | |
3d6d86c6 | 980 | struct value *val; |
c906108c SS |
981 | struct format_data fmt; |
982 | ||
983 | if (exp && *exp == '/') | |
984 | { | |
985 | exp++; | |
986 | fmt = decode_format (&exp, 0, 0); | |
987 | validate_format (fmt, "output"); | |
988 | format = fmt.format; | |
989 | } | |
990 | ||
991 | expr = parse_expression (exp); | |
c13c43fd | 992 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
993 | |
994 | val = evaluate_expression (expr); | |
995 | ||
996 | annotate_value_begin (VALUE_TYPE (val)); | |
997 | ||
2acceee2 | 998 | print_formatted (val, format, fmt.size, gdb_stdout); |
c906108c SS |
999 | |
1000 | annotate_value_end (); | |
1001 | ||
2acceee2 JM |
1002 | wrap_here (""); |
1003 | gdb_flush (gdb_stdout); | |
1004 | ||
c906108c SS |
1005 | do_cleanups (old_chain); |
1006 | } | |
1007 | ||
1008 | /* ARGSUSED */ | |
1009 | static void | |
fba45db2 | 1010 | set_command (char *exp, int from_tty) |
c906108c SS |
1011 | { |
1012 | struct expression *expr = parse_expression (exp); | |
c13c43fd PDM |
1013 | register struct cleanup *old_chain = |
1014 | make_cleanup (free_current_contents, &expr); | |
c906108c SS |
1015 | evaluate_expression (expr); |
1016 | do_cleanups (old_chain); | |
1017 | } | |
1018 | ||
1019 | /* ARGSUSED */ | |
1020 | static void | |
fba45db2 | 1021 | sym_info (char *arg, int from_tty) |
c906108c SS |
1022 | { |
1023 | struct minimal_symbol *msymbol; | |
c5aa993b JM |
1024 | struct objfile *objfile; |
1025 | struct obj_section *osect; | |
1026 | asection *sect; | |
1027 | CORE_ADDR addr, sect_addr; | |
1028 | int matches = 0; | |
1029 | unsigned int offset; | |
c906108c SS |
1030 | |
1031 | if (!arg) | |
1032 | error_no_arg ("address"); | |
1033 | ||
1034 | addr = parse_and_eval_address (arg); | |
1035 | ALL_OBJSECTIONS (objfile, osect) | |
c5aa993b JM |
1036 | { |
1037 | sect = osect->the_bfd_section; | |
1038 | sect_addr = overlay_mapped_address (addr, sect); | |
c906108c | 1039 | |
c5aa993b JM |
1040 | if (osect->addr <= sect_addr && sect_addr < osect->endaddr && |
1041 | (msymbol = lookup_minimal_symbol_by_pc_section (sect_addr, sect))) | |
1042 | { | |
1043 | matches = 1; | |
1044 | offset = sect_addr - SYMBOL_VALUE_ADDRESS (msymbol); | |
1045 | if (offset) | |
1046 | printf_filtered ("%s + %u in ", | |
de5ad195 | 1047 | SYMBOL_PRINT_NAME (msymbol), offset); |
c5aa993b JM |
1048 | else |
1049 | printf_filtered ("%s in ", | |
de5ad195 | 1050 | SYMBOL_PRINT_NAME (msymbol)); |
c5aa993b JM |
1051 | if (pc_in_unmapped_range (addr, sect)) |
1052 | printf_filtered ("load address range of "); | |
1053 | if (section_is_overlay (sect)) | |
1054 | printf_filtered ("%s overlay ", | |
1055 | section_is_mapped (sect) ? "mapped" : "unmapped"); | |
1056 | printf_filtered ("section %s", sect->name); | |
1057 | printf_filtered ("\n"); | |
1058 | } | |
1059 | } | |
c906108c SS |
1060 | if (matches == 0) |
1061 | printf_filtered ("No symbol matches %s.\n", arg); | |
1062 | } | |
1063 | ||
1064 | /* ARGSUSED */ | |
1065 | static void | |
fba45db2 | 1066 | address_info (char *exp, int from_tty) |
c906108c SS |
1067 | { |
1068 | register struct symbol *sym; | |
1069 | register struct minimal_symbol *msymbol; | |
1070 | register long val; | |
1071 | register long basereg; | |
1072 | asection *section; | |
1073 | CORE_ADDR load_addr; | |
1074 | int is_a_field_of_this; /* C++: lookup_symbol sets this to nonzero | |
1075 | if exp is a field of `this'. */ | |
1076 | ||
1077 | if (exp == 0) | |
1078 | error ("Argument required."); | |
1079 | ||
ae767bfb | 1080 | sym = lookup_symbol (exp, get_selected_block (0), VAR_NAMESPACE, |
c5aa993b | 1081 | &is_a_field_of_this, (struct symtab **) NULL); |
c906108c SS |
1082 | if (sym == NULL) |
1083 | { | |
1084 | if (is_a_field_of_this) | |
1085 | { | |
1086 | printf_filtered ("Symbol \""); | |
1087 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1088 | current_language->la_language, DMGL_ANSI); | |
e2b23ee9 AF |
1089 | printf_filtered ("\" is a field of the local class variable "); |
1090 | if (current_language->la_language == language_objc) | |
2625d86c | 1091 | printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */ |
e2b23ee9 | 1092 | else |
2625d86c | 1093 | printf_filtered ("`this'\n"); |
c906108c SS |
1094 | return; |
1095 | } | |
1096 | ||
1097 | msymbol = lookup_minimal_symbol (exp, NULL, NULL); | |
1098 | ||
1099 | if (msymbol != NULL) | |
1100 | { | |
1101 | load_addr = SYMBOL_VALUE_ADDRESS (msymbol); | |
1102 | ||
1103 | printf_filtered ("Symbol \""); | |
1104 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1105 | current_language->la_language, DMGL_ANSI); | |
1106 | printf_filtered ("\" is at "); | |
1107 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1108 | printf_filtered (" in a file compiled without debugging"); | |
1109 | section = SYMBOL_BFD_SECTION (msymbol); | |
1110 | if (section_is_overlay (section)) | |
1111 | { | |
1112 | load_addr = overlay_unmapped_address (load_addr, section); | |
1113 | printf_filtered (",\n -- loaded at "); | |
1114 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1115 | printf_filtered (" in overlay section %s", section->name); | |
1116 | } | |
1117 | printf_filtered (".\n"); | |
1118 | } | |
1119 | else | |
1120 | error ("No symbol \"%s\" in current context.", exp); | |
1121 | return; | |
1122 | } | |
1123 | ||
1124 | printf_filtered ("Symbol \""); | |
22abf04a | 1125 | fprintf_symbol_filtered (gdb_stdout, DEPRECATED_SYMBOL_NAME (sym), |
c906108c SS |
1126 | current_language->la_language, DMGL_ANSI); |
1127 | printf_filtered ("\" is "); | |
c5aa993b | 1128 | val = SYMBOL_VALUE (sym); |
c906108c SS |
1129 | basereg = SYMBOL_BASEREG (sym); |
1130 | section = SYMBOL_BFD_SECTION (sym); | |
1131 | ||
1132 | switch (SYMBOL_CLASS (sym)) | |
1133 | { | |
1134 | case LOC_CONST: | |
1135 | case LOC_CONST_BYTES: | |
1136 | printf_filtered ("constant"); | |
1137 | break; | |
1138 | ||
1139 | case LOC_LABEL: | |
1140 | printf_filtered ("a label at address "); | |
c5aa993b | 1141 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym), |
c906108c SS |
1142 | 1, gdb_stdout); |
1143 | if (section_is_overlay (section)) | |
1144 | { | |
1145 | load_addr = overlay_unmapped_address (load_addr, section); | |
1146 | printf_filtered (",\n -- loaded at "); | |
1147 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1148 | printf_filtered (" in overlay section %s", section->name); | |
1149 | } | |
1150 | break; | |
1151 | ||
4c2df51b DJ |
1152 | case LOC_COMPUTED: |
1153 | case LOC_COMPUTED_ARG: | |
1154 | (SYMBOL_LOCATION_FUNCS (sym)->describe_location) (sym, gdb_stdout); | |
1155 | break; | |
1156 | ||
c906108c SS |
1157 | case LOC_REGISTER: |
1158 | printf_filtered ("a variable in register %s", REGISTER_NAME (val)); | |
1159 | break; | |
1160 | ||
1161 | case LOC_STATIC: | |
1162 | printf_filtered ("static storage at address "); | |
c5aa993b | 1163 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym), |
c906108c SS |
1164 | 1, gdb_stdout); |
1165 | if (section_is_overlay (section)) | |
1166 | { | |
1167 | load_addr = overlay_unmapped_address (load_addr, section); | |
1168 | printf_filtered (",\n -- loaded at "); | |
1169 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1170 | printf_filtered (" in overlay section %s", section->name); | |
1171 | } | |
1172 | break; | |
1173 | ||
1174 | case LOC_INDIRECT: | |
1175 | printf_filtered ("external global (indirect addressing), at address *("); | |
1176 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym), | |
1177 | 1, gdb_stdout); | |
1178 | printf_filtered (")"); | |
1179 | if (section_is_overlay (section)) | |
1180 | { | |
1181 | load_addr = overlay_unmapped_address (load_addr, section); | |
1182 | printf_filtered (",\n -- loaded at "); | |
1183 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1184 | printf_filtered (" in overlay section %s", section->name); | |
1185 | } | |
1186 | break; | |
1187 | ||
1188 | case LOC_REGPARM: | |
1189 | printf_filtered ("an argument in register %s", REGISTER_NAME (val)); | |
1190 | break; | |
1191 | ||
1192 | case LOC_REGPARM_ADDR: | |
1193 | printf_filtered ("address of an argument in register %s", REGISTER_NAME (val)); | |
1194 | break; | |
1195 | ||
1196 | case LOC_ARG: | |
1197 | printf_filtered ("an argument at offset %ld", val); | |
1198 | break; | |
1199 | ||
1200 | case LOC_LOCAL_ARG: | |
1201 | printf_filtered ("an argument at frame offset %ld", val); | |
1202 | break; | |
1203 | ||
1204 | case LOC_LOCAL: | |
1205 | printf_filtered ("a local variable at frame offset %ld", val); | |
1206 | break; | |
1207 | ||
1208 | case LOC_REF_ARG: | |
1209 | printf_filtered ("a reference argument at offset %ld", val); | |
1210 | break; | |
1211 | ||
1212 | case LOC_BASEREG: | |
1213 | printf_filtered ("a variable at offset %ld from register %s", | |
c5aa993b | 1214 | val, REGISTER_NAME (basereg)); |
c906108c SS |
1215 | break; |
1216 | ||
1217 | case LOC_BASEREG_ARG: | |
1218 | printf_filtered ("an argument at offset %ld from register %s", | |
c5aa993b | 1219 | val, REGISTER_NAME (basereg)); |
c906108c SS |
1220 | break; |
1221 | ||
1222 | case LOC_TYPEDEF: | |
1223 | printf_filtered ("a typedef"); | |
1224 | break; | |
1225 | ||
1226 | case LOC_BLOCK: | |
1227 | printf_filtered ("a function at address "); | |
c5aa993b | 1228 | print_address_numeric (load_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)), |
c906108c | 1229 | 1, gdb_stdout); |
c906108c SS |
1230 | if (section_is_overlay (section)) |
1231 | { | |
1232 | load_addr = overlay_unmapped_address (load_addr, section); | |
1233 | printf_filtered (",\n -- loaded at "); | |
1234 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1235 | printf_filtered (" in overlay section %s", section->name); | |
1236 | } | |
1237 | break; | |
1238 | ||
1239 | case LOC_UNRESOLVED: | |
1240 | { | |
1241 | struct minimal_symbol *msym; | |
1242 | ||
22abf04a | 1243 | msym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym), NULL, NULL); |
c906108c SS |
1244 | if (msym == NULL) |
1245 | printf_filtered ("unresolved"); | |
1246 | else | |
1247 | { | |
1248 | section = SYMBOL_BFD_SECTION (msym); | |
1249 | printf_filtered ("static storage at address "); | |
c5aa993b | 1250 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (msym), |
c906108c SS |
1251 | 1, gdb_stdout); |
1252 | if (section_is_overlay (section)) | |
1253 | { | |
1254 | load_addr = overlay_unmapped_address (load_addr, section); | |
1255 | printf_filtered (",\n -- loaded at "); | |
1256 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1257 | printf_filtered (" in overlay section %s", section->name); | |
1258 | } | |
1259 | } | |
1260 | } | |
1261 | break; | |
1262 | ||
407caf07 | 1263 | case LOC_HP_THREAD_LOCAL_STATIC: |
c906108c | 1264 | printf_filtered ( |
c5aa993b JM |
1265 | "a thread-local variable at offset %ld from the thread base register %s", |
1266 | val, REGISTER_NAME (basereg)); | |
c906108c SS |
1267 | break; |
1268 | ||
9d774e44 EZ |
1269 | case LOC_THREAD_LOCAL_STATIC: |
1270 | printf_filtered ("a thread-local variable at offset %ld in the " | |
1271 | "thread-local storage for `%s'", | |
1272 | val, SYMBOL_OBJFILE (sym)->name); | |
1273 | break; | |
1274 | ||
c906108c SS |
1275 | case LOC_OPTIMIZED_OUT: |
1276 | printf_filtered ("optimized out"); | |
1277 | break; | |
c5aa993b | 1278 | |
c906108c SS |
1279 | default: |
1280 | printf_filtered ("of unknown (botched) type"); | |
1281 | break; | |
1282 | } | |
1283 | printf_filtered (".\n"); | |
1284 | } | |
1285 | \f | |
1286 | void | |
fba45db2 | 1287 | x_command (char *exp, int from_tty) |
c906108c SS |
1288 | { |
1289 | struct expression *expr; | |
1290 | struct format_data fmt; | |
1291 | struct cleanup *old_chain; | |
1292 | struct value *val; | |
1293 | ||
1294 | fmt.format = last_format; | |
1295 | fmt.size = last_size; | |
1296 | fmt.count = 1; | |
1297 | ||
1298 | if (exp && *exp == '/') | |
1299 | { | |
1300 | exp++; | |
1301 | fmt = decode_format (&exp, last_format, last_size); | |
1302 | } | |
1303 | ||
1304 | /* If we have an expression, evaluate it and use it as the address. */ | |
1305 | ||
1306 | if (exp != 0 && *exp != 0) | |
1307 | { | |
1308 | expr = parse_expression (exp); | |
1309 | /* Cause expression not to be there any more | |
c5aa993b JM |
1310 | if this command is repeated with Newline. |
1311 | But don't clobber a user-defined command's definition. */ | |
c906108c SS |
1312 | if (from_tty) |
1313 | *exp = 0; | |
c13c43fd | 1314 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
1315 | val = evaluate_expression (expr); |
1316 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_REF) | |
1317 | val = value_ind (val); | |
1318 | /* In rvalue contexts, such as this, functions are coerced into | |
c5aa993b | 1319 | pointers to functions. This makes "x/i main" work. */ |
c0d8fd9a MS |
1320 | if (/* last_format == 'i' && */ |
1321 | TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_FUNC | |
c5aa993b | 1322 | && VALUE_LVAL (val) == lval_memory) |
c906108c SS |
1323 | next_address = VALUE_ADDRESS (val); |
1324 | else | |
1aa20aa8 | 1325 | next_address = value_as_address (val); |
c906108c SS |
1326 | if (VALUE_BFD_SECTION (val)) |
1327 | next_section = VALUE_BFD_SECTION (val); | |
1328 | do_cleanups (old_chain); | |
1329 | } | |
1330 | ||
1331 | do_examine (fmt, next_address, next_section); | |
1332 | ||
1333 | /* If the examine succeeds, we remember its size and format for next time. */ | |
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 JB |
1342 | struct type *pointer_type |
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 JM |
1347 | |
1348 | /* Make contents of last address examined available to the user as $__. */ | |
c906108c SS |
1349 | /* If the last value has not been fetched from memory then don't |
1350 | fetch it now - instead mark it by voiding the $__ variable. */ | |
1351 | if (VALUE_LAZY (last_examine_value)) | |
1352 | set_internalvar (lookup_internalvar ("__"), | |
1353 | allocate_value (builtin_type_void)); | |
1354 | else | |
1355 | set_internalvar (lookup_internalvar ("__"), last_examine_value); | |
1356 | } | |
1357 | } | |
c906108c | 1358 | \f |
c5aa993b | 1359 | |
c906108c SS |
1360 | /* Add an expression to the auto-display chain. |
1361 | Specify the expression. */ | |
1362 | ||
1363 | static void | |
fba45db2 | 1364 | display_command (char *exp, int from_tty) |
c906108c SS |
1365 | { |
1366 | struct format_data fmt; | |
1367 | register struct expression *expr; | |
1368 | register struct display *new; | |
1369 | int display_it = 1; | |
1370 | ||
1371 | #if defined(TUI) | |
021e7609 AC |
1372 | /* NOTE: cagney/2003-02-13 The `tui_active' was previously |
1373 | `tui_version'. */ | |
1374 | if (tui_active && *exp == '$') | |
5ecb1806 | 1375 | display_it = (tui_set_layout (exp) == TUI_FAILURE); |
c906108c SS |
1376 | #endif |
1377 | ||
1378 | if (display_it) | |
1379 | { | |
1380 | if (exp == 0) | |
1381 | { | |
1382 | do_displays (); | |
1383 | return; | |
1384 | } | |
1385 | ||
1386 | if (*exp == '/') | |
1387 | { | |
1388 | exp++; | |
1389 | fmt = decode_format (&exp, 0, 0); | |
1390 | if (fmt.size && fmt.format == 0) | |
1391 | fmt.format = 'x'; | |
1392 | if (fmt.format == 'i' || fmt.format == 's') | |
1393 | fmt.size = 'b'; | |
1394 | } | |
1395 | else | |
1396 | { | |
1397 | fmt.format = 0; | |
1398 | fmt.size = 0; | |
1399 | fmt.count = 0; | |
1400 | } | |
1401 | ||
1402 | innermost_block = 0; | |
1403 | expr = parse_expression (exp); | |
1404 | ||
1405 | new = (struct display *) xmalloc (sizeof (struct display)); | |
1406 | ||
1407 | new->exp = expr; | |
1408 | new->block = innermost_block; | |
1409 | new->next = display_chain; | |
1410 | new->number = ++display_number; | |
1411 | new->format = fmt; | |
b5de0fa7 | 1412 | new->enabled_p = 1; |
c906108c SS |
1413 | display_chain = new; |
1414 | ||
1415 | if (from_tty && target_has_execution) | |
1416 | do_one_display (new); | |
1417 | ||
1418 | dont_repeat (); | |
1419 | } | |
1420 | } | |
1421 | ||
1422 | static void | |
fba45db2 | 1423 | free_display (struct display *d) |
c906108c | 1424 | { |
b8c9b27d KB |
1425 | xfree (d->exp); |
1426 | xfree (d); | |
c906108c SS |
1427 | } |
1428 | ||
1429 | /* Clear out the display_chain. | |
1430 | Done when new symtabs are loaded, since this invalidates | |
1431 | the types stored in many expressions. */ | |
1432 | ||
1433 | void | |
fba45db2 | 1434 | clear_displays (void) |
c906108c SS |
1435 | { |
1436 | register struct display *d; | |
1437 | ||
1438 | while ((d = display_chain) != NULL) | |
1439 | { | |
b8c9b27d | 1440 | xfree (d->exp); |
c906108c | 1441 | display_chain = d->next; |
b8c9b27d | 1442 | xfree (d); |
c906108c SS |
1443 | } |
1444 | } | |
1445 | ||
1446 | /* Delete the auto-display number NUM. */ | |
1447 | ||
1448 | static void | |
fba45db2 | 1449 | delete_display (int num) |
c906108c SS |
1450 | { |
1451 | register struct display *d1, *d; | |
1452 | ||
1453 | if (!display_chain) | |
1454 | error ("No display number %d.", num); | |
1455 | ||
1456 | if (display_chain->number == num) | |
1457 | { | |
1458 | d1 = display_chain; | |
1459 | display_chain = d1->next; | |
1460 | free_display (d1); | |
1461 | } | |
1462 | else | |
c5aa993b | 1463 | for (d = display_chain;; d = d->next) |
c906108c SS |
1464 | { |
1465 | if (d->next == 0) | |
1466 | error ("No display number %d.", num); | |
1467 | if (d->next->number == num) | |
1468 | { | |
1469 | d1 = d->next; | |
1470 | d->next = d1->next; | |
1471 | free_display (d1); | |
1472 | break; | |
1473 | } | |
1474 | } | |
1475 | } | |
1476 | ||
1477 | /* Delete some values from the auto-display chain. | |
1478 | Specify the element numbers. */ | |
1479 | ||
1480 | static void | |
fba45db2 | 1481 | undisplay_command (char *args, int from_tty) |
c906108c SS |
1482 | { |
1483 | register char *p = args; | |
1484 | register char *p1; | |
1485 | register int num; | |
1486 | ||
1487 | if (args == 0) | |
1488 | { | |
1489 | if (query ("Delete all auto-display expressions? ")) | |
1490 | clear_displays (); | |
1491 | dont_repeat (); | |
1492 | return; | |
1493 | } | |
1494 | ||
1495 | while (*p) | |
1496 | { | |
1497 | p1 = p; | |
c5aa993b JM |
1498 | while (*p1 >= '0' && *p1 <= '9') |
1499 | p1++; | |
c906108c SS |
1500 | if (*p1 && *p1 != ' ' && *p1 != '\t') |
1501 | error ("Arguments must be display numbers."); | |
1502 | ||
1503 | num = atoi (p); | |
1504 | ||
1505 | delete_display (num); | |
1506 | ||
1507 | p = p1; | |
c5aa993b JM |
1508 | while (*p == ' ' || *p == '\t') |
1509 | p++; | |
c906108c SS |
1510 | } |
1511 | dont_repeat (); | |
1512 | } | |
1513 | ||
1514 | /* Display a single auto-display. | |
1515 | Do nothing if the display cannot be printed in the current context, | |
1516 | or if the display is disabled. */ | |
1517 | ||
1518 | static void | |
fba45db2 | 1519 | do_one_display (struct display *d) |
c906108c SS |
1520 | { |
1521 | int within_current_scope; | |
1522 | ||
b5de0fa7 | 1523 | if (d->enabled_p == 0) |
c906108c SS |
1524 | return; |
1525 | ||
1526 | if (d->block) | |
ae767bfb | 1527 | within_current_scope = contained_in (get_selected_block (0), d->block); |
c906108c SS |
1528 | else |
1529 | within_current_scope = 1; | |
1530 | if (!within_current_scope) | |
1531 | return; | |
1532 | ||
1533 | current_display_number = d->number; | |
1534 | ||
1535 | annotate_display_begin (); | |
1536 | printf_filtered ("%d", d->number); | |
1537 | annotate_display_number_end (); | |
1538 | printf_filtered (": "); | |
1539 | if (d->format.size) | |
1540 | { | |
1541 | CORE_ADDR addr; | |
3d6d86c6 | 1542 | struct value *val; |
c906108c SS |
1543 | |
1544 | annotate_display_format (); | |
1545 | ||
1546 | printf_filtered ("x/"); | |
1547 | if (d->format.count != 1) | |
1548 | printf_filtered ("%d", d->format.count); | |
1549 | printf_filtered ("%c", d->format.format); | |
1550 | if (d->format.format != 'i' && d->format.format != 's') | |
1551 | printf_filtered ("%c", d->format.size); | |
1552 | printf_filtered (" "); | |
1553 | ||
1554 | annotate_display_expression (); | |
1555 | ||
1556 | print_expression (d->exp, gdb_stdout); | |
1557 | annotate_display_expression_end (); | |
1558 | ||
1559 | if (d->format.count != 1) | |
1560 | printf_filtered ("\n"); | |
1561 | else | |
1562 | printf_filtered (" "); | |
c5aa993b | 1563 | |
c906108c | 1564 | val = evaluate_expression (d->exp); |
1aa20aa8 | 1565 | addr = value_as_address (val); |
c906108c SS |
1566 | if (d->format.format == 'i') |
1567 | addr = ADDR_BITS_REMOVE (addr); | |
1568 | ||
1569 | annotate_display_value (); | |
1570 | ||
1571 | do_examine (d->format, addr, VALUE_BFD_SECTION (val)); | |
1572 | } | |
1573 | else | |
1574 | { | |
1575 | annotate_display_format (); | |
1576 | ||
1577 | if (d->format.format) | |
1578 | printf_filtered ("/%c ", d->format.format); | |
1579 | ||
1580 | annotate_display_expression (); | |
1581 | ||
1582 | print_expression (d->exp, gdb_stdout); | |
1583 | annotate_display_expression_end (); | |
1584 | ||
1585 | printf_filtered (" = "); | |
1586 | ||
1587 | annotate_display_expression (); | |
1588 | ||
1589 | print_formatted (evaluate_expression (d->exp), | |
2acceee2 | 1590 | d->format.format, d->format.size, gdb_stdout); |
c906108c SS |
1591 | printf_filtered ("\n"); |
1592 | } | |
1593 | ||
1594 | annotate_display_end (); | |
1595 | ||
1596 | gdb_flush (gdb_stdout); | |
1597 | current_display_number = -1; | |
1598 | } | |
1599 | ||
1600 | /* Display all of the values on the auto-display chain which can be | |
1601 | evaluated in the current scope. */ | |
1602 | ||
1603 | void | |
fba45db2 | 1604 | do_displays (void) |
c906108c SS |
1605 | { |
1606 | register struct display *d; | |
1607 | ||
1608 | for (d = display_chain; d; d = d->next) | |
1609 | do_one_display (d); | |
1610 | } | |
1611 | ||
1612 | /* Delete the auto-display which we were in the process of displaying. | |
1613 | This is done when there is an error or a signal. */ | |
1614 | ||
1615 | void | |
fba45db2 | 1616 | disable_display (int num) |
c906108c SS |
1617 | { |
1618 | register struct display *d; | |
1619 | ||
1620 | for (d = display_chain; d; d = d->next) | |
1621 | if (d->number == num) | |
1622 | { | |
b5de0fa7 | 1623 | d->enabled_p = 0; |
c906108c SS |
1624 | return; |
1625 | } | |
1626 | printf_unfiltered ("No display number %d.\n", num); | |
1627 | } | |
c5aa993b | 1628 | |
c906108c | 1629 | void |
fba45db2 | 1630 | disable_current_display (void) |
c906108c SS |
1631 | { |
1632 | if (current_display_number >= 0) | |
1633 | { | |
1634 | disable_display (current_display_number); | |
1635 | fprintf_unfiltered (gdb_stderr, "Disabling display %d to avoid infinite recursion.\n", | |
c5aa993b | 1636 | current_display_number); |
c906108c SS |
1637 | } |
1638 | current_display_number = -1; | |
1639 | } | |
1640 | ||
1641 | static void | |
fba45db2 | 1642 | display_info (char *ignore, int from_tty) |
c906108c SS |
1643 | { |
1644 | register struct display *d; | |
1645 | ||
1646 | if (!display_chain) | |
1647 | printf_unfiltered ("There are no auto-display expressions now.\n"); | |
1648 | else | |
c5aa993b | 1649 | printf_filtered ("Auto-display expressions now in effect:\n\ |
c906108c SS |
1650 | Num Enb Expression\n"); |
1651 | ||
1652 | for (d = display_chain; d; d = d->next) | |
1653 | { | |
b5de0fa7 | 1654 | printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]); |
c906108c SS |
1655 | if (d->format.size) |
1656 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
c5aa993b | 1657 | d->format.format); |
c906108c SS |
1658 | else if (d->format.format) |
1659 | printf_filtered ("/%c ", d->format.format); | |
1660 | print_expression (d->exp, gdb_stdout); | |
ae767bfb | 1661 | if (d->block && !contained_in (get_selected_block (0), d->block)) |
c906108c SS |
1662 | printf_filtered (" (cannot be evaluated in the current context)"); |
1663 | printf_filtered ("\n"); | |
1664 | gdb_flush (gdb_stdout); | |
1665 | } | |
1666 | } | |
1667 | ||
1668 | static void | |
fba45db2 | 1669 | enable_display (char *args, int from_tty) |
c906108c SS |
1670 | { |
1671 | register char *p = args; | |
1672 | register char *p1; | |
1673 | register int num; | |
1674 | register struct display *d; | |
1675 | ||
1676 | if (p == 0) | |
1677 | { | |
1678 | for (d = display_chain; d; d = d->next) | |
b5de0fa7 | 1679 | d->enabled_p = 1; |
c906108c SS |
1680 | } |
1681 | else | |
1682 | while (*p) | |
1683 | { | |
1684 | p1 = p; | |
1685 | while (*p1 >= '0' && *p1 <= '9') | |
1686 | p1++; | |
1687 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
1688 | error ("Arguments must be display numbers."); | |
c5aa993b | 1689 | |
c906108c | 1690 | num = atoi (p); |
c5aa993b | 1691 | |
c906108c SS |
1692 | for (d = display_chain; d; d = d->next) |
1693 | if (d->number == num) | |
1694 | { | |
b5de0fa7 | 1695 | d->enabled_p = 1; |
c906108c SS |
1696 | goto win; |
1697 | } | |
1698 | printf_unfiltered ("No display number %d.\n", num); | |
1699 | win: | |
1700 | p = p1; | |
1701 | while (*p == ' ' || *p == '\t') | |
1702 | p++; | |
1703 | } | |
1704 | } | |
1705 | ||
1706 | /* ARGSUSED */ | |
1707 | static void | |
fba45db2 | 1708 | disable_display_command (char *args, int from_tty) |
c906108c SS |
1709 | { |
1710 | register char *p = args; | |
1711 | register char *p1; | |
1712 | register struct display *d; | |
1713 | ||
1714 | if (p == 0) | |
1715 | { | |
1716 | for (d = display_chain; d; d = d->next) | |
b5de0fa7 | 1717 | d->enabled_p = 0; |
c906108c SS |
1718 | } |
1719 | else | |
1720 | while (*p) | |
1721 | { | |
1722 | p1 = p; | |
1723 | while (*p1 >= '0' && *p1 <= '9') | |
1724 | p1++; | |
1725 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
1726 | error ("Arguments must be display numbers."); | |
c5aa993b | 1727 | |
c906108c SS |
1728 | disable_display (atoi (p)); |
1729 | ||
1730 | p = p1; | |
1731 | while (*p == ' ' || *p == '\t') | |
1732 | p++; | |
1733 | } | |
1734 | } | |
c906108c | 1735 | \f |
c5aa993b | 1736 | |
c906108c SS |
1737 | /* Print the value in stack frame FRAME of a variable |
1738 | specified by a struct symbol. */ | |
1739 | ||
1740 | void | |
fba45db2 KB |
1741 | print_variable_value (struct symbol *var, struct frame_info *frame, |
1742 | struct ui_file *stream) | |
c906108c | 1743 | { |
3d6d86c6 | 1744 | struct value *val = read_var_value (var, frame); |
c906108c SS |
1745 | |
1746 | value_print (val, stream, 0, Val_pretty_default); | |
1747 | } | |
1748 | ||
1749 | /* Print the arguments of a stack frame, given the function FUNC | |
1750 | running in that frame (as a symbol), the info on the frame, | |
1751 | and the number of args according to the stack frame (or -1 if unknown). */ | |
1752 | ||
1753 | /* References here and elsewhere to "number of args according to the | |
1754 | stack frame" appear in all cases to refer to "number of ints of args | |
1755 | according to the stack frame". At least for VAX, i386, isi. */ | |
1756 | ||
1757 | void | |
fba45db2 KB |
1758 | print_frame_args (struct symbol *func, struct frame_info *fi, int num, |
1759 | struct ui_file *stream) | |
c906108c SS |
1760 | { |
1761 | struct block *b = NULL; | |
c906108c SS |
1762 | int first = 1; |
1763 | register int i; | |
1764 | register struct symbol *sym; | |
3d6d86c6 | 1765 | struct value *val; |
c906108c SS |
1766 | /* Offset of next stack argument beyond the one we have seen that is |
1767 | at the highest offset. | |
1768 | -1 if we haven't come to a stack argument yet. */ | |
1769 | long highest_offset = -1; | |
1770 | int arg_size; | |
1771 | /* Number of ints of arguments that we have printed so far. */ | |
1772 | int args_printed = 0; | |
d493eb33 | 1773 | struct cleanup *old_chain, *list_chain; |
8b93c638 JM |
1774 | struct ui_stream *stb; |
1775 | ||
1776 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 1777 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
1778 | |
1779 | if (func) | |
1780 | { | |
1781 | b = SYMBOL_BLOCK_VALUE (func); | |
261397f8 DJ |
1782 | /* Function blocks are order sensitive, and thus should not be |
1783 | hashed. */ | |
1784 | gdb_assert (BLOCK_HASHTABLE (b) == 0); | |
1785 | ||
e88c90f2 | 1786 | ALL_BLOCK_SYMBOLS (b, i, sym) |
55159471 DJ |
1787 | { |
1788 | QUIT; | |
c906108c | 1789 | |
55159471 DJ |
1790 | /* Keep track of the highest stack argument offset seen, and |
1791 | skip over any kinds of symbols we don't care about. */ | |
c906108c | 1792 | |
55159471 DJ |
1793 | switch (SYMBOL_CLASS (sym)) |
1794 | { | |
1795 | case LOC_ARG: | |
1796 | case LOC_REF_ARG: | |
1797 | { | |
1798 | long current_offset = SYMBOL_VALUE (sym); | |
1799 | arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); | |
1800 | ||
1801 | /* Compute address of next argument by adding the size of | |
1802 | this argument and rounding to an int boundary. */ | |
1803 | current_offset = | |
1804 | ((current_offset + arg_size + sizeof (int) - 1) | |
1805 | & ~(sizeof (int) - 1)); | |
1806 | ||
1807 | /* If this is the highest offset seen yet, set highest_offset. */ | |
1808 | if (highest_offset == -1 | |
1809 | || (current_offset > highest_offset)) | |
1810 | highest_offset = current_offset; | |
1811 | ||
1812 | /* Add the number of ints we're about to print to args_printed. */ | |
1813 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); | |
1814 | } | |
c906108c | 1815 | |
55159471 DJ |
1816 | /* We care about types of symbols, but don't need to keep track of |
1817 | stack offsets in them. */ | |
1818 | case LOC_REGPARM: | |
1819 | case LOC_REGPARM_ADDR: | |
1820 | case LOC_LOCAL_ARG: | |
1821 | case LOC_BASEREG_ARG: | |
4c2df51b | 1822 | case LOC_COMPUTED_ARG: |
55159471 | 1823 | break; |
c906108c | 1824 | |
55159471 DJ |
1825 | /* Other types of symbols we just skip over. */ |
1826 | default: | |
1827 | continue; | |
1828 | } | |
1829 | ||
1830 | /* We have to look up the symbol because arguments can have | |
1831 | two entries (one a parameter, one a local) and the one we | |
1832 | want is the local, which lookup_symbol will find for us. | |
1833 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1834 | small structure and gcc2 when the argument type is float | |
1835 | and it is passed as a double and converted to float by | |
1836 | the prologue (in the latter case the type of the LOC_ARG | |
1837 | symbol is double and the type of the LOC_LOCAL symbol is | |
1838 | float). */ | |
1839 | /* But if the parameter name is null, don't try it. | |
1840 | Null parameter names occur on the RS/6000, for traceback tables. | |
1841 | FIXME, should we even print them? */ | |
1842 | ||
22abf04a | 1843 | if (*DEPRECATED_SYMBOL_NAME (sym)) |
c906108c | 1844 | { |
55159471 DJ |
1845 | struct symbol *nsym; |
1846 | nsym = lookup_symbol | |
22abf04a | 1847 | (DEPRECATED_SYMBOL_NAME (sym), |
55159471 DJ |
1848 | b, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL); |
1849 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER) | |
1850 | { | |
1851 | /* There is a LOC_ARG/LOC_REGISTER pair. This means that | |
1852 | it was passed on the stack and loaded into a register, | |
1853 | or passed in a register and stored in a stack slot. | |
1854 | GDB 3.x used the LOC_ARG; GDB 4.0-4.11 used the LOC_REGISTER. | |
1855 | ||
1856 | Reasons for using the LOC_ARG: | |
1857 | (1) because find_saved_registers may be slow for remote | |
1858 | debugging, | |
1859 | (2) because registers are often re-used and stack slots | |
1860 | rarely (never?) are. Therefore using the stack slot is | |
1861 | much less likely to print garbage. | |
1862 | ||
1863 | Reasons why we might want to use the LOC_REGISTER: | |
1864 | (1) So that the backtrace prints the same value as | |
1865 | "print foo". I see no compelling reason why this needs | |
1866 | to be the case; having the backtrace print the value which | |
1867 | was passed in, and "print foo" print the value as modified | |
1868 | within the called function, makes perfect sense to me. | |
1869 | ||
1870 | Additional note: It might be nice if "info args" displayed | |
1871 | both values. | |
1872 | One more note: There is a case with sparc structure passing | |
1873 | where we need to use the LOC_REGISTER, but this is dealt with | |
1874 | by creating a single LOC_REGPARM in symbol reading. */ | |
1875 | ||
1876 | /* Leave sym (the LOC_ARG) alone. */ | |
1877 | ; | |
1878 | } | |
1879 | else | |
1880 | sym = nsym; | |
c906108c | 1881 | } |
c906108c | 1882 | |
55159471 DJ |
1883 | /* Print the current arg. */ |
1884 | if (!first) | |
1885 | ui_out_text (uiout, ", "); | |
1886 | ui_out_wrap_hint (uiout, " "); | |
1887 | ||
1888 | annotate_arg_begin (); | |
1889 | ||
1890 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
de5ad195 | 1891 | fprintf_symbol_filtered (stb->stream, SYMBOL_PRINT_NAME (sym), |
55159471 DJ |
1892 | SYMBOL_LANGUAGE (sym), DMGL_PARAMS | DMGL_ANSI); |
1893 | ui_out_field_stream (uiout, "name", stb); | |
1894 | annotate_arg_name_end (); | |
1895 | ui_out_text (uiout, "="); | |
c906108c | 1896 | |
55159471 DJ |
1897 | /* Avoid value_print because it will deref ref parameters. We just |
1898 | want to print their addresses. Print ??? for args whose address | |
1899 | we do not know. We pass 2 as "recurse" to val_print because our | |
1900 | standard indentation here is 4 spaces, and val_print indents | |
1901 | 2 for each recurse. */ | |
1902 | val = read_var_value (sym, fi); | |
c906108c | 1903 | |
55159471 | 1904 | annotate_arg_value (val == NULL ? NULL : VALUE_TYPE (val)); |
c906108c | 1905 | |
55159471 DJ |
1906 | if (val) |
1907 | { | |
55159471 DJ |
1908 | val_print (VALUE_TYPE (val), VALUE_CONTENTS (val), 0, |
1909 | VALUE_ADDRESS (val), | |
1910 | stb->stream, 0, 0, 2, Val_no_prettyprint); | |
1911 | ui_out_field_stream (uiout, "value", stb); | |
1912 | } | |
1913 | else | |
1914 | ui_out_text (uiout, "???"); | |
8b93c638 | 1915 | |
55159471 DJ |
1916 | /* Invoke ui_out_tuple_end. */ |
1917 | do_cleanups (list_chain); | |
c906108c | 1918 | |
55159471 | 1919 | annotate_arg_end (); |
c906108c | 1920 | |
55159471 DJ |
1921 | first = 0; |
1922 | } | |
c906108c SS |
1923 | } |
1924 | ||
1925 | /* Don't print nameless args in situations where we don't know | |
1926 | enough about the stack to find them. */ | |
1927 | if (num != -1) | |
1928 | { | |
1929 | long start; | |
1930 | ||
1931 | if (highest_offset == -1) | |
1932 | start = FRAME_ARGS_SKIP; | |
1933 | else | |
1934 | start = highest_offset; | |
1935 | ||
1936 | print_frame_nameless_args (fi, start, num - args_printed, | |
1937 | first, stream); | |
1938 | } | |
8b93c638 | 1939 | do_cleanups (old_chain); |
c906108c SS |
1940 | } |
1941 | ||
1942 | /* Print nameless args on STREAM. | |
1943 | FI is the frameinfo for this frame, START is the offset | |
1944 | of the first nameless arg, and NUM is the number of nameless args to | |
1945 | print. FIRST is nonzero if this is the first argument (not just | |
1946 | the first nameless arg). */ | |
1947 | ||
1948 | static void | |
fba45db2 KB |
1949 | print_frame_nameless_args (struct frame_info *fi, long start, int num, |
1950 | int first, struct ui_file *stream) | |
c906108c SS |
1951 | { |
1952 | int i; | |
1953 | CORE_ADDR argsaddr; | |
1954 | long arg_value; | |
1955 | ||
1956 | for (i = 0; i < num; i++) | |
1957 | { | |
1958 | QUIT; | |
da62e633 | 1959 | argsaddr = get_frame_args_address (fi); |
c906108c SS |
1960 | if (!argsaddr) |
1961 | return; | |
c906108c | 1962 | arg_value = read_memory_integer (argsaddr + start, sizeof (int)); |
c906108c SS |
1963 | if (!first) |
1964 | fprintf_filtered (stream, ", "); | |
c906108c | 1965 | fprintf_filtered (stream, "%ld", arg_value); |
c906108c SS |
1966 | first = 0; |
1967 | start += sizeof (int); | |
1968 | } | |
1969 | } | |
1970 | \f | |
1971 | /* ARGSUSED */ | |
1972 | static void | |
fba45db2 | 1973 | printf_command (char *arg, int from_tty) |
c906108c SS |
1974 | { |
1975 | register char *f = NULL; | |
1976 | register char *s = arg; | |
1977 | char *string = NULL; | |
3d6d86c6 | 1978 | struct value **val_args; |
c906108c SS |
1979 | char *substrings; |
1980 | char *current_substring; | |
1981 | int nargs = 0; | |
1982 | int allocated_args = 20; | |
1983 | struct cleanup *old_cleanups; | |
1984 | ||
f976f6d4 AC |
1985 | val_args = (struct value **) xmalloc (allocated_args |
1986 | * sizeof (struct value *)); | |
c13c43fd | 1987 | old_cleanups = make_cleanup (free_current_contents, &val_args); |
c906108c SS |
1988 | |
1989 | if (s == 0) | |
1990 | error_no_arg ("format-control string and values to print"); | |
1991 | ||
1992 | /* Skip white space before format string */ | |
c5aa993b JM |
1993 | while (*s == ' ' || *s == '\t') |
1994 | s++; | |
c906108c SS |
1995 | |
1996 | /* A format string should follow, enveloped in double quotes */ | |
1997 | if (*s++ != '"') | |
1998 | error ("Bad format string, missing '\"'."); | |
1999 | ||
2000 | /* Parse the format-control string and copy it into the string STRING, | |
2001 | processing some kinds of escape sequence. */ | |
2002 | ||
2003 | f = string = (char *) alloca (strlen (s) + 1); | |
2004 | ||
2005 | while (*s != '"') | |
2006 | { | |
2007 | int c = *s++; | |
2008 | switch (c) | |
2009 | { | |
2010 | case '\0': | |
2011 | error ("Bad format string, non-terminated '\"'."); | |
2012 | ||
2013 | case '\\': | |
2014 | switch (c = *s++) | |
2015 | { | |
2016 | case '\\': | |
2017 | *f++ = '\\'; | |
2018 | break; | |
2019 | case 'a': | |
c906108c | 2020 | *f++ = '\a'; |
c906108c SS |
2021 | break; |
2022 | case 'b': | |
2023 | *f++ = '\b'; | |
2024 | break; | |
2025 | case 'f': | |
2026 | *f++ = '\f'; | |
2027 | break; | |
2028 | case 'n': | |
2029 | *f++ = '\n'; | |
2030 | break; | |
2031 | case 'r': | |
2032 | *f++ = '\r'; | |
2033 | break; | |
2034 | case 't': | |
2035 | *f++ = '\t'; | |
2036 | break; | |
2037 | case 'v': | |
2038 | *f++ = '\v'; | |
2039 | break; | |
2040 | case '"': | |
2041 | *f++ = '"'; | |
2042 | break; | |
2043 | default: | |
2044 | /* ??? TODO: handle other escape sequences */ | |
2045 | error ("Unrecognized escape character \\%c in format string.", | |
2046 | c); | |
2047 | } | |
2048 | break; | |
2049 | ||
2050 | default: | |
2051 | *f++ = c; | |
2052 | } | |
2053 | } | |
2054 | ||
2055 | /* Skip over " and following space and comma. */ | |
2056 | s++; | |
2057 | *f++ = '\0'; | |
c5aa993b JM |
2058 | while (*s == ' ' || *s == '\t') |
2059 | s++; | |
c906108c SS |
2060 | |
2061 | if (*s != ',' && *s != 0) | |
2062 | error ("Invalid argument syntax"); | |
2063 | ||
c5aa993b JM |
2064 | if (*s == ',') |
2065 | s++; | |
2066 | while (*s == ' ' || *s == '\t') | |
2067 | s++; | |
c906108c SS |
2068 | |
2069 | /* Need extra space for the '\0's. Doubling the size is sufficient. */ | |
2070 | substrings = alloca (strlen (string) * 2); | |
2071 | current_substring = substrings; | |
2072 | ||
2073 | { | |
2074 | /* Now scan the string for %-specs and see what kinds of args they want. | |
2075 | argclass[I] classifies the %-specs so we can give printf_filtered | |
2076 | something of the right size. */ | |
2077 | ||
c5aa993b JM |
2078 | enum argclass |
2079 | { | |
2080 | no_arg, int_arg, string_arg, double_arg, long_long_arg | |
2081 | }; | |
c906108c SS |
2082 | enum argclass *argclass; |
2083 | enum argclass this_argclass; | |
2084 | char *last_arg; | |
2085 | int nargs_wanted; | |
2086 | int lcount; | |
2087 | int i; | |
2088 | ||
2089 | argclass = (enum argclass *) alloca (strlen (s) * sizeof *argclass); | |
2090 | nargs_wanted = 0; | |
2091 | f = string; | |
2092 | last_arg = string; | |
2093 | while (*f) | |
2094 | if (*f++ == '%') | |
2095 | { | |
2096 | lcount = 0; | |
c5aa993b | 2097 | while (strchr ("0123456789.hlL-+ #", *f)) |
c906108c SS |
2098 | { |
2099 | if (*f == 'l' || *f == 'L') | |
2100 | lcount++; | |
2101 | f++; | |
2102 | } | |
2103 | switch (*f) | |
2104 | { | |
2105 | case 's': | |
2106 | this_argclass = string_arg; | |
2107 | break; | |
2108 | ||
2109 | case 'e': | |
2110 | case 'f': | |
2111 | case 'g': | |
2112 | this_argclass = double_arg; | |
2113 | break; | |
2114 | ||
2115 | case '*': | |
2116 | error ("`*' not supported for precision or width in printf"); | |
2117 | ||
2118 | case 'n': | |
2119 | error ("Format specifier `n' not supported in printf"); | |
2120 | ||
2121 | case '%': | |
2122 | this_argclass = no_arg; | |
2123 | break; | |
2124 | ||
2125 | default: | |
2126 | if (lcount > 1) | |
2127 | this_argclass = long_long_arg; | |
2128 | else | |
2129 | this_argclass = int_arg; | |
2130 | break; | |
2131 | } | |
2132 | f++; | |
2133 | if (this_argclass != no_arg) | |
2134 | { | |
2135 | strncpy (current_substring, last_arg, f - last_arg); | |
2136 | current_substring += f - last_arg; | |
2137 | *current_substring++ = '\0'; | |
2138 | last_arg = f; | |
2139 | argclass[nargs_wanted++] = this_argclass; | |
2140 | } | |
2141 | } | |
2142 | ||
2143 | /* Now, parse all arguments and evaluate them. | |
2144 | Store the VALUEs in VAL_ARGS. */ | |
2145 | ||
2146 | while (*s != '\0') | |
2147 | { | |
2148 | char *s1; | |
2149 | if (nargs == allocated_args) | |
f976f6d4 AC |
2150 | val_args = (struct value **) xrealloc ((char *) val_args, |
2151 | (allocated_args *= 2) | |
2152 | * sizeof (struct value *)); | |
c906108c SS |
2153 | s1 = s; |
2154 | val_args[nargs] = parse_to_comma_and_eval (&s1); | |
c5aa993b | 2155 | |
c906108c SS |
2156 | /* If format string wants a float, unchecked-convert the value to |
2157 | floating point of the same size */ | |
c5aa993b | 2158 | |
c906108c SS |
2159 | if (argclass[nargs] == double_arg) |
2160 | { | |
2161 | struct type *type = VALUE_TYPE (val_args[nargs]); | |
2162 | if (TYPE_LENGTH (type) == sizeof (float)) | |
c5aa993b | 2163 | VALUE_TYPE (val_args[nargs]) = builtin_type_float; |
c906108c | 2164 | if (TYPE_LENGTH (type) == sizeof (double)) |
c5aa993b | 2165 | VALUE_TYPE (val_args[nargs]) = builtin_type_double; |
c906108c SS |
2166 | } |
2167 | nargs++; | |
2168 | s = s1; | |
2169 | if (*s == ',') | |
2170 | s++; | |
2171 | } | |
c5aa993b | 2172 | |
c906108c SS |
2173 | if (nargs != nargs_wanted) |
2174 | error ("Wrong number of arguments for specified format-string"); | |
2175 | ||
2176 | /* Now actually print them. */ | |
2177 | current_substring = substrings; | |
2178 | for (i = 0; i < nargs; i++) | |
2179 | { | |
2180 | switch (argclass[i]) | |
2181 | { | |
2182 | case string_arg: | |
2183 | { | |
2184 | char *str; | |
2185 | CORE_ADDR tem; | |
2186 | int j; | |
1aa20aa8 | 2187 | tem = value_as_address (val_args[i]); |
c906108c SS |
2188 | |
2189 | /* This is a %s argument. Find the length of the string. */ | |
c5aa993b | 2190 | for (j = 0;; j++) |
c906108c SS |
2191 | { |
2192 | char c; | |
2193 | QUIT; | |
d4b2399a | 2194 | read_memory (tem + j, &c, 1); |
c906108c SS |
2195 | if (c == 0) |
2196 | break; | |
2197 | } | |
2198 | ||
2199 | /* Copy the string contents into a string inside GDB. */ | |
2200 | str = (char *) alloca (j + 1); | |
7b92f6e1 MS |
2201 | if (j != 0) |
2202 | read_memory (tem, str, j); | |
c906108c SS |
2203 | str[j] = 0; |
2204 | ||
2205 | printf_filtered (current_substring, str); | |
2206 | } | |
2207 | break; | |
2208 | case double_arg: | |
2209 | { | |
2210 | double val = value_as_double (val_args[i]); | |
2211 | printf_filtered (current_substring, val); | |
2212 | break; | |
2213 | } | |
2214 | case long_long_arg: | |
2215 | #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG) | |
2216 | { | |
2217 | long long val = value_as_long (val_args[i]); | |
2218 | printf_filtered (current_substring, val); | |
2219 | break; | |
2220 | } | |
2221 | #else | |
2222 | error ("long long not supported in printf"); | |
2223 | #endif | |
2224 | case int_arg: | |
2225 | { | |
2226 | /* FIXME: there should be separate int_arg and long_arg. */ | |
2227 | long val = value_as_long (val_args[i]); | |
2228 | printf_filtered (current_substring, val); | |
2229 | break; | |
2230 | } | |
c5aa993b JM |
2231 | default: /* purecov: deadcode */ |
2232 | error ("internal error in printf_command"); /* purecov: deadcode */ | |
c906108c SS |
2233 | } |
2234 | /* Skip to the next substring. */ | |
2235 | current_substring += strlen (current_substring) + 1; | |
2236 | } | |
2237 | /* Print the portion of the format string after the last argument. */ | |
2238 | printf_filtered (last_arg); | |
2239 | } | |
2240 | do_cleanups (old_cleanups); | |
2241 | } | |
c906108c SS |
2242 | |
2243 | /* Print the instruction at address MEMADDR in debugged memory, | |
2244 | on STREAM. Returns length of the instruction, in bytes. */ | |
2245 | ||
2246 | static int | |
fba45db2 | 2247 | print_insn (CORE_ADDR memaddr, struct ui_file *stream) |
c906108c | 2248 | { |
d7449b42 | 2249 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
2250 | TARGET_PRINT_INSN_INFO->endian = BFD_ENDIAN_BIG; |
2251 | else | |
2252 | TARGET_PRINT_INSN_INFO->endian = BFD_ENDIAN_LITTLE; | |
2253 | ||
2254 | if (TARGET_ARCHITECTURE != NULL) | |
2255 | TARGET_PRINT_INSN_INFO->mach = TARGET_ARCHITECTURE->mach; | |
2256 | /* else: should set .mach=0 but some disassemblers don't grok this */ | |
2257 | ||
99a6d8ba KS |
2258 | TARGET_PRINT_INSN_INFO->stream = stream; |
2259 | ||
c906108c SS |
2260 | return TARGET_PRINT_INSN (memaddr, TARGET_PRINT_INSN_INFO); |
2261 | } | |
c906108c | 2262 | \f |
c5aa993b | 2263 | |
c906108c | 2264 | void |
fba45db2 | 2265 | _initialize_printcmd (void) |
c906108c | 2266 | { |
c94fdfd0 EZ |
2267 | struct cmd_list_element *c; |
2268 | ||
c906108c SS |
2269 | current_display_number = -1; |
2270 | ||
2271 | add_info ("address", address_info, | |
c5aa993b | 2272 | "Describe where symbol SYM is stored."); |
c906108c | 2273 | |
c5aa993b | 2274 | add_info ("symbol", sym_info, |
c906108c SS |
2275 | "Describe what symbol is at location ADDR.\n\ |
2276 | Only for symbols with fixed locations (global or static scope)."); | |
2277 | ||
2278 | add_com ("x", class_vars, x_command, | |
2279 | concat ("Examine memory: x/FMT ADDRESS.\n\ | |
2280 | ADDRESS is an expression for the memory address to examine.\n\ | |
2281 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2282 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
2283 | t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n", | |
c5aa993b | 2284 | "Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ |
c906108c SS |
2285 | The specified number of objects of the specified size are printed\n\ |
2286 | according to the format.\n\n\ | |
2287 | Defaults for format and size letters are those previously used.\n\ | |
2288 | Default count is 1. Default address is following last thing printed\n\ | |
2289 | with this command or \"print\".", NULL)); | |
2290 | ||
c906108c SS |
2291 | #if 0 |
2292 | add_com ("whereis", class_vars, whereis_command, | |
2293 | "Print line number and file of definition of variable."); | |
2294 | #endif | |
c5aa993b | 2295 | |
c906108c SS |
2296 | add_info ("display", display_info, |
2297 | "Expressions to display when program stops, with code numbers."); | |
2298 | ||
2299 | add_cmd ("undisplay", class_vars, undisplay_command, | |
2300 | "Cancel some expressions to be displayed when program stops.\n\ | |
2301 | Arguments are the code numbers of the expressions to stop displaying.\n\ | |
2302 | No argument means cancel all automatic-display expressions.\n\ | |
2303 | \"delete display\" has the same effect as this command.\n\ | |
2304 | Do \"info display\" to see current list of code numbers.", | |
c5aa993b | 2305 | &cmdlist); |
c906108c SS |
2306 | |
2307 | add_com ("display", class_vars, display_command, | |
2308 | "Print value of expression EXP each time the program stops.\n\ | |
2309 | /FMT may be used before EXP as in the \"print\" command.\n\ | |
2310 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2311 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2312 | and examining is done as in the \"x\" command.\n\n\ | |
2313 | With no argument, display all currently requested auto-display expressions.\n\ | |
2314 | Use \"undisplay\" to cancel display requests previously made." | |
c5aa993b | 2315 | ); |
c906108c | 2316 | |
c5aa993b | 2317 | add_cmd ("display", class_vars, enable_display, |
c906108c SS |
2318 | "Enable some expressions to be displayed when program stops.\n\ |
2319 | Arguments are the code numbers of the expressions to resume displaying.\n\ | |
2320 | No argument means enable all automatic-display expressions.\n\ | |
2321 | Do \"info display\" to see current list of code numbers.", &enablelist); | |
2322 | ||
c5aa993b | 2323 | add_cmd ("display", class_vars, disable_display_command, |
c906108c SS |
2324 | "Disable some expressions to be displayed when program stops.\n\ |
2325 | Arguments are the code numbers of the expressions to stop displaying.\n\ | |
2326 | No argument means disable all automatic-display expressions.\n\ | |
2327 | Do \"info display\" to see current list of code numbers.", &disablelist); | |
2328 | ||
c5aa993b | 2329 | add_cmd ("display", class_vars, undisplay_command, |
c906108c SS |
2330 | "Cancel some expressions to be displayed when program stops.\n\ |
2331 | Arguments are the code numbers of the expressions to stop displaying.\n\ | |
2332 | No argument means cancel all automatic-display expressions.\n\ | |
2333 | Do \"info display\" to see current list of code numbers.", &deletelist); | |
2334 | ||
2335 | add_com ("printf", class_vars, printf_command, | |
c5aa993b | 2336 | "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ |
c906108c SS |
2337 | This is useful for formatted output in user-defined commands."); |
2338 | ||
2339 | add_com ("output", class_vars, output_command, | |
2340 | "Like \"print\" but don't put in value history and don't print newline.\n\ | |
2341 | This is useful in user-defined commands."); | |
2342 | ||
2343 | add_prefix_cmd ("set", class_vars, set_command, | |
c5aa993b | 2344 | concat ("Evaluate expression EXP and assign result to variable VAR, using assignment\n\ |
c906108c SS |
2345 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2346 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2347 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2348 | variable in the program being debugged. EXP is any valid expression.\n", | |
c5aa993b | 2349 | "Use \"set variable\" for variables with names identical to set subcommands.\n\ |
c906108c SS |
2350 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
2351 | You can see these environment settings with the \"show\" command.", NULL), | |
c5aa993b | 2352 | &setlist, "set ", 1, &cmdlist); |
c906108c | 2353 | if (dbx_commands) |
c5aa993b | 2354 | add_com ("assign", class_vars, set_command, concat ("Evaluate expression \ |
c906108c SS |
2355 | EXP and assign result to variable VAR, using assignment\n\ |
2356 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ | |
2357 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2358 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2359 | variable in the program being debugged. EXP is any valid expression.\n", | |
c5aa993b | 2360 | "Use \"set variable\" for variables with names identical to set subcommands.\n\ |
c906108c SS |
2361 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
2362 | You can see these environment settings with the \"show\" command.", NULL)); | |
2363 | ||
2364 | /* "call" is the same as "set", but handy for dbx users to call fns. */ | |
c94fdfd0 EZ |
2365 | c = add_com ("call", class_vars, call_command, |
2366 | "Call a function in the program.\n\ | |
c906108c SS |
2367 | The argument is the function name and arguments, in the notation of the\n\ |
2368 | current working language. The result is printed and saved in the value\n\ | |
2369 | history, if it is not void."); | |
5ba2abeb | 2370 | set_cmd_completer (c, location_completer); |
c906108c SS |
2371 | |
2372 | add_cmd ("variable", class_vars, set_command, | |
c5aa993b | 2373 | "Evaluate expression EXP and assign result to variable VAR, using assignment\n\ |
c906108c SS |
2374 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2375 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2376 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2377 | variable in the program being debugged. EXP is any valid expression.\n\ | |
2378 | This may usually be abbreviated to simply \"set\".", | |
c5aa993b | 2379 | &setlist); |
c906108c | 2380 | |
c94fdfd0 | 2381 | c = add_com ("print", class_vars, print_command, |
c906108c SS |
2382 | concat ("Print value of expression EXP.\n\ |
2383 | Variables accessible are those of the lexical environment of the selected\n\ | |
2384 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2385 | \n\ | |
2386 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2387 | $$NUM refers to NUM'th value back from the last one.\n\ | |
2388 | Names starting with $ refer to registers (with the values they would have\n", | |
c5aa993b | 2389 | "if the program were to return to the stack frame now selected, restoring\n\ |
c906108c SS |
2390 | all registers saved by frames farther in) or else to debugger\n\ |
2391 | \"convenience\" variables (any such name not a known register).\n\ | |
2392 | Use assignment expressions to give values to convenience variables.\n", | |
2393 | "\n\ | |
2394 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ | |
2395 | @ is a binary operator for treating consecutive data objects\n\ | |
2396 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2397 | element is FOO, whose second element is stored in the space following\n\ | |
2398 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
2399 | resides in memory.\n", | |
2400 | "\n\ | |
2401 | EXP may be preceded with /FMT, where FMT is a format letter\n\ | |
2402 | but no count or size letter (see \"x\" command).", NULL)); | |
5ba2abeb | 2403 | set_cmd_completer (c, location_completer); |
c906108c SS |
2404 | add_com_alias ("p", "print", class_vars, 1); |
2405 | ||
c94fdfd0 | 2406 | c = add_com ("inspect", class_vars, inspect_command, |
c5aa993b | 2407 | "Same as \"print\" command, except that if you are running in the epoch\n\ |
c906108c | 2408 | environment, the value is printed in its own window."); |
5ba2abeb | 2409 | set_cmd_completer (c, location_completer); |
c906108c SS |
2410 | |
2411 | add_show_from_set ( | |
c5aa993b JM |
2412 | add_set_cmd ("max-symbolic-offset", no_class, var_uinteger, |
2413 | (char *) &max_symbolic_offset, | |
2414 | "Set the largest offset that will be printed in <symbol+1234> form.", | |
2415 | &setprintlist), | |
2416 | &showprintlist); | |
c906108c | 2417 | add_show_from_set ( |
c5aa993b JM |
2418 | add_set_cmd ("symbol-filename", no_class, var_boolean, |
2419 | (char *) &print_symbol_filename, | |
2420 | "Set printing of source filename and line number with <symbol>.", | |
2421 | &setprintlist), | |
2422 | &showprintlist); | |
c906108c SS |
2423 | |
2424 | /* For examine/instruction a single byte quantity is specified as | |
2425 | the data. This avoids problems with value_at_lazy() requiring a | |
2426 | valid data type (and rejecting VOID). */ | |
2427 | examine_i_type = init_type (TYPE_CODE_INT, 1, 0, "examine_i_type", NULL); | |
2428 | ||
2429 | examine_b_type = init_type (TYPE_CODE_INT, 1, 0, "examine_b_type", NULL); | |
2430 | examine_h_type = init_type (TYPE_CODE_INT, 2, 0, "examine_h_type", NULL); | |
2431 | examine_w_type = init_type (TYPE_CODE_INT, 4, 0, "examine_w_type", NULL); | |
2432 | examine_g_type = init_type (TYPE_CODE_INT, 8, 0, "examine_g_type", NULL); | |
2433 | ||
2434 | } |