3bf57d21 |
1 | /* Print values for GNU debugger GDB. |
4187119d |
2 | Copyright (C) 1986, 1987, 1988, 1989 Free Software Foundation, Inc. |
7b4ac7e1 |
3 | |
4187119d |
4 | This file is part of GDB. |
7b4ac7e1 |
5 | |
4187119d |
6 | GDB is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by |
8 | the Free Software Foundation; either version 1, or (at your option) |
9 | any later version. |
7b4ac7e1 |
10 | |
4187119d |
11 | GDB is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | GNU General Public License for more details. |
15 | |
16 | You should have received a copy of the GNU General Public License |
17 | along with GDB; see the file COPYING. If not, write to |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ |
7b4ac7e1 |
19 | |
20 | #include <stdio.h> |
21 | #include "defs.h" |
7b4ac7e1 |
22 | #include "param.h" |
e91b87a3 |
23 | #include "frame.h" |
7b4ac7e1 |
24 | #include "symtab.h" |
25 | #include "value.h" |
26 | #include "expression.h" |
27 | |
28 | struct format_data |
29 | { |
30 | int count; |
31 | char format; |
32 | char size; |
33 | }; |
34 | |
35 | /* Last specified output format. */ |
36 | |
37 | static char last_format = 'x'; |
38 | |
39 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ |
40 | |
41 | static char last_size = 'w'; |
42 | |
43 | /* Default address to examine next. */ |
44 | |
45 | static CORE_ADDR next_address; |
46 | |
47 | /* Last address examined. */ |
48 | |
49 | static CORE_ADDR last_examine_address; |
50 | |
51 | /* Contents of last address examined. |
52 | This is not valid past the end of the `x' command! */ |
53 | |
54 | static value last_examine_value; |
55 | |
3bf57d21 |
56 | /* Number of auto-display expression currently being displayed. |
57 | So that we can deleted it if we get an error or a signal within it. |
58 | -1 when not doing one. */ |
59 | |
60 | int current_display_number; |
61 | |
62 | static void do_one_display (); |
63 | |
7b4ac7e1 |
64 | void do_displays (); |
65 | void print_address (); |
3bf57d21 |
66 | void print_scalar_formatted (); |
7b4ac7e1 |
67 | |
7b4ac7e1 |
68 | \f |
69 | /* Decode a format specification. *STRING_PTR should point to it. |
70 | OFORMAT and OSIZE are used as defaults for the format and size |
71 | if none are given in the format specification. |
4187119d |
72 | If OSIZE is zero, then the size field of the returned value |
73 | should be set only if a size is explicitly specified by the |
74 | user. |
7b4ac7e1 |
75 | The structure returned describes all the data |
76 | found in the specification. In addition, *STRING_PTR is advanced |
77 | past the specification and past all whitespace following it. */ |
78 | |
79 | struct format_data |
80 | decode_format (string_ptr, oformat, osize) |
81 | char **string_ptr; |
82 | char oformat; |
83 | char osize; |
84 | { |
85 | struct format_data val; |
86 | register char *p = *string_ptr; |
87 | |
4187119d |
88 | val.format = '?'; |
89 | val.size = '?'; |
7b4ac7e1 |
90 | val.count = 1; |
91 | |
92 | if (*p >= '0' && *p <= '9') |
93 | val.count = atoi (p); |
94 | while (*p >= '0' && *p <= '9') p++; |
95 | |
96 | /* Now process size or format letters that follow. */ |
97 | |
98 | while (1) |
99 | { |
100 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') |
101 | val.size = *p++; |
e91b87a3 |
102 | #ifdef LONG_LONG |
103 | else if (*p == 'l') |
104 | { |
105 | val.size = 'g'; |
106 | p++; |
107 | } |
108 | #endif |
7b4ac7e1 |
109 | else if (*p >= 'a' && *p <= 'z') |
110 | val.format = *p++; |
111 | else |
112 | break; |
113 | } |
114 | |
e91b87a3 |
115 | #ifndef LONG_LONG |
116 | /* Make sure 'g' size is not used on integer types. |
117 | Well, actually, we can handle hex. */ |
118 | if (val.size == 'g' && val.format != 'f' && val.format != 'x') |
632ea0cc |
119 | val.size = 'w'; |
e91b87a3 |
120 | #endif |
632ea0cc |
121 | |
7b4ac7e1 |
122 | while (*p == ' ' || *p == '\t') p++; |
123 | *string_ptr = p; |
124 | |
4187119d |
125 | /* Set defaults for format and size if not specified. */ |
126 | if (val.format == '?') |
127 | { |
128 | if (val.size == '?') |
129 | { |
130 | /* Neither has been specified. */ |
131 | val.format = oformat; |
132 | val.size = osize; |
133 | } |
134 | else |
135 | /* If a size is specified, any format makes a reasonable |
136 | default except 'i'. */ |
137 | val.format = oformat == 'i' ? 'x' : oformat; |
138 | } |
139 | else if (val.size == '?') |
140 | switch (val.format) |
141 | { |
142 | case 'a': |
143 | case 's': |
144 | /* Addresses must be words. */ |
145 | val.size = osize ? 'w' : osize; |
146 | break; |
147 | case 'f': |
148 | /* Floating point has to be word or giantword. */ |
149 | if (osize == 'w' || osize == 'g') |
150 | val.size = osize; |
151 | else |
152 | /* Default it to giantword if the last used size is not |
153 | appropriate. */ |
154 | val.size = osize ? 'g' : osize; |
155 | break; |
156 | case 'c': |
157 | /* Characters default to one byte. */ |
158 | val.size = osize ? 'b' : osize; |
159 | break; |
160 | default: |
161 | /* The default is the size most recently specified. */ |
162 | val.size = osize; |
163 | } |
164 | |
7b4ac7e1 |
165 | return val; |
166 | } |
167 | \f |
168 | /* Print value VAL on stdout according to FORMAT, a letter or 0. |
169 | Do not end with a newline. |
632ea0cc |
170 | 0 means print VAL according to its own type. |
171 | SIZE is the letter for the size of datum being printed. |
172 | This is used to pad hex numbers so they line up. */ |
7b4ac7e1 |
173 | |
174 | static void |
632ea0cc |
175 | print_formatted (val, format, size) |
7b4ac7e1 |
176 | register value val; |
177 | register char format; |
632ea0cc |
178 | char size; |
7b4ac7e1 |
179 | { |
7b4ac7e1 |
180 | int len = TYPE_LENGTH (VALUE_TYPE (val)); |
181 | |
182 | if (VALUE_LVAL (val) == lval_memory) |
183 | next_address = VALUE_ADDRESS (val) + len; |
184 | |
7b4ac7e1 |
185 | switch (format) |
186 | { |
187 | case 's': |
188 | next_address = VALUE_ADDRESS (val) |
4187119d |
189 | + value_print (value_addr (val), stdout, 0, Val_pretty_default); |
7b4ac7e1 |
190 | break; |
191 | |
192 | case 'i': |
193 | next_address = VALUE_ADDRESS (val) |
194 | + print_insn (VALUE_ADDRESS (val), stdout); |
195 | break; |
196 | |
3bf57d21 |
197 | default: |
198 | if (format == 0 |
199 | || TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_ARRAY |
200 | || TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_STRUCT |
e91b87a3 |
201 | || TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_UNION |
202 | || VALUE_REPEATED (val)) |
4187119d |
203 | value_print (val, stdout, format, Val_pretty_default); |
3bf57d21 |
204 | else |
205 | print_scalar_formatted (VALUE_CONTENTS (val), VALUE_TYPE (val), |
206 | format, size, stdout); |
207 | } |
208 | } |
209 | |
210 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, |
211 | according to letters FORMAT and SIZE on STREAM. |
212 | FORMAT may not be zero. Formats s and i are not supported at this level. |
213 | |
214 | This is how the elements of an array or structure are printed |
215 | with a format. */ |
216 | |
217 | void |
218 | print_scalar_formatted (valaddr, type, format, size, stream) |
219 | char *valaddr; |
220 | struct type *type; |
221 | char format; |
222 | int size; |
223 | FILE *stream; |
224 | { |
e91b87a3 |
225 | LONGEST val_long; |
3bf57d21 |
226 | int len = TYPE_LENGTH (type); |
227 | |
e91b87a3 |
228 | if (size == 'g' && sizeof (LONGEST) < 8 |
229 | && format == 'x') |
230 | { |
231 | /* ok, we're going to have to get fancy here. Assumption: a |
232 | long is four bytes. */ |
233 | unsigned long v1, v2, tmp; |
234 | |
235 | v1 = unpack_long (builtin_type_long, valaddr); |
236 | v2 = unpack_long (builtin_type_long, valaddr + 4); |
237 | |
238 | #ifdef BYTES_BIG_ENDIAN |
239 | #else |
240 | /* Little endian -- swap the two for printing */ |
241 | tmp = v1; |
242 | v1 = v2; |
243 | v2 = tmp; |
244 | #endif |
4187119d |
245 | |
e91b87a3 |
246 | switch (format) |
247 | { |
248 | case 'x': |
4187119d |
249 | fprintf_filtered (stream, "0x%08x%08x", v1, v2); |
e91b87a3 |
250 | break; |
251 | default: |
252 | error ("Output size \"g\" unimplemented for format \"%c\".", |
253 | format); |
254 | } |
255 | return; |
256 | } |
257 | |
3bf57d21 |
258 | val_long = unpack_long (type, valaddr); |
259 | |
260 | /* If value is unsigned, truncate it in case negative. */ |
261 | if (format != 'd') |
262 | { |
263 | if (len == sizeof (char)) |
264 | val_long &= (1 << 8 * sizeof(char)) - 1; |
265 | else if (len == sizeof (short)) |
266 | val_long &= (1 << 8 * sizeof(short)) - 1; |
e91b87a3 |
267 | else if (len == sizeof (long)) |
268 | val_long &= (unsigned long) - 1; |
3bf57d21 |
269 | } |
270 | |
271 | switch (format) |
272 | { |
7b4ac7e1 |
273 | case 'x': |
e91b87a3 |
274 | #ifdef LONG_LONG |
275 | if (!size) |
276 | size = (len < sizeof (long long) ? 'w' : 'g'); |
277 | switch (size) |
278 | { |
279 | case 'b': |
4187119d |
280 | fprintf_filtered (stream, "0x%02llx", val_long); |
e91b87a3 |
281 | break; |
282 | case 'h': |
4187119d |
283 | fprintf_filtered (stream, "0x%04llx", val_long); |
e91b87a3 |
284 | break; |
285 | case 0: /* no size specified, like in print */ |
286 | case 'w': |
4187119d |
287 | fprintf_filtered (stream, "0x%08llx", val_long); |
e91b87a3 |
288 | break; |
289 | case 'g': |
4187119d |
290 | fprintf_filtered (stream, "0x%016llx", val_long); |
e91b87a3 |
291 | break; |
292 | default: |
293 | error ("Undefined output size \"%c\".", size); |
294 | } |
295 | #else |
632ea0cc |
296 | switch (size) |
297 | { |
298 | case 'b': |
4187119d |
299 | fprintf_filtered (stream, "0x%02x", val_long); |
632ea0cc |
300 | break; |
301 | case 'h': |
4187119d |
302 | fprintf_filtered (stream, "0x%04x", val_long); |
632ea0cc |
303 | break; |
304 | case 0: /* no size specified, like in print */ |
305 | case 'w': |
4187119d |
306 | fprintf_filtered (stream, "0x%08x", val_long); |
632ea0cc |
307 | break; |
308 | case 'g': |
4187119d |
309 | fprintf_filtered (stream, "0x%o16x", val_long); |
632ea0cc |
310 | break; |
311 | default: |
312 | error ("Undefined output size \"%c\".", size); |
313 | } |
e91b87a3 |
314 | #endif /* not LONG_LONG */ |
7b4ac7e1 |
315 | break; |
316 | |
317 | case 'd': |
e91b87a3 |
318 | #ifdef LONG_LONG |
4187119d |
319 | fprintf_filtered (stream, "%lld", val_long); |
e91b87a3 |
320 | #else |
4187119d |
321 | fprintf_filtered (stream, "%d", val_long); |
e91b87a3 |
322 | #endif |
7b4ac7e1 |
323 | break; |
324 | |
325 | case 'u': |
e91b87a3 |
326 | #ifdef LONG_LONG |
4187119d |
327 | fprintf_filtered (stream, "%llu", val_long); |
e91b87a3 |
328 | #else |
4187119d |
329 | fprintf_filtered (stream, "%u", val_long); |
e91b87a3 |
330 | #endif |
7b4ac7e1 |
331 | break; |
332 | |
333 | case 'o': |
334 | if (val_long) |
e91b87a3 |
335 | #ifdef LONG_LONG |
4187119d |
336 | fprintf_filtered (stream, "0%llo", val_long); |
e91b87a3 |
337 | #else |
4187119d |
338 | fprintf_filtered (stream, "0%o", val_long); |
e91b87a3 |
339 | #endif |
7b4ac7e1 |
340 | else |
4187119d |
341 | fprintf_filtered (stream, "0"); |
7b4ac7e1 |
342 | break; |
343 | |
344 | case 'a': |
e91b87a3 |
345 | print_address ((CORE_ADDR) val_long, stream); |
7b4ac7e1 |
346 | break; |
347 | |
348 | case 'c': |
4187119d |
349 | value_print (value_from_long (builtin_type_char, val_long), stream, 0, |
350 | Val_pretty_default); |
7b4ac7e1 |
351 | break; |
352 | |
353 | case 'f': |
3bf57d21 |
354 | if (len == sizeof (float)) |
355 | type = builtin_type_float; |
e91b87a3 |
356 | else if (len == sizeof (double)) |
3bf57d21 |
357 | type = builtin_type_double; |
7b4ac7e1 |
358 | #ifdef IEEE_FLOAT |
4187119d |
359 | if (is_nan (type, valaddr)) |
7b4ac7e1 |
360 | { |
4187119d |
361 | fprintf_filtered (stream, "Nan"); |
7b4ac7e1 |
362 | break; |
363 | } |
364 | #endif |
e91b87a3 |
365 | { |
366 | double doub; |
367 | int inv; |
4187119d |
368 | |
e91b87a3 |
369 | doub = unpack_double (type, valaddr, &inv); |
370 | if (inv) |
4187119d |
371 | fprintf_filtered (stream, "Invalid float value"); |
372 | else |
373 | fprintf_filtered (stream, len > 4 ? "%.16g" : "%.6g", doub); |
e91b87a3 |
374 | } |
7b4ac7e1 |
375 | break; |
376 | |
377 | case 0: |
3bf57d21 |
378 | abort (); |
7b4ac7e1 |
379 | |
380 | default: |
381 | error ("Undefined output format \"%c\".", format); |
382 | } |
383 | } |
384 | |
385 | /* Specify default address for `x' command. |
386 | `info lines' uses this. */ |
387 | |
388 | void |
389 | set_next_address (addr) |
390 | CORE_ADDR addr; |
391 | { |
392 | next_address = addr; |
393 | |
394 | /* Make address available to the user as $_. */ |
395 | set_internalvar (lookup_internalvar ("_"), |
e91b87a3 |
396 | value_from_long (builtin_type_int, (LONGEST) addr)); |
7b4ac7e1 |
397 | } |
398 | |
399 | /* Print address ADDR symbolically on STREAM. |
400 | First print it as a number. Then perhaps print |
401 | <SYMBOL + OFFSET> after the number. */ |
402 | |
403 | void |
404 | print_address (addr, stream) |
405 | CORE_ADDR addr; |
406 | FILE *stream; |
407 | { |
4187119d |
408 | register int i = 0; |
409 | register char *format; |
410 | register struct symbol *fs; |
e91b87a3 |
411 | char *name; |
412 | int name_location; |
7b4ac7e1 |
413 | |
4187119d |
414 | i = find_pc_partial_function (addr, &name, &name_location); |
7b4ac7e1 |
415 | |
4187119d |
416 | /* If nothing comes out, don't print anything symbolic. */ |
417 | |
418 | if (i == 0) |
419 | format = "0x%x"; |
420 | else if (addr - name_location) |
421 | format = "0x%x <%s+%d>"; |
e91b87a3 |
422 | else |
4187119d |
423 | format = "0x%x <%s>"; |
e91b87a3 |
424 | |
4187119d |
425 | fprintf_filtered (stream, format, addr, name, addr - name_location); |
7b4ac7e1 |
426 | } |
427 | \f |
428 | /* Examine data at address ADDR in format FMT. |
429 | Fetch it from memory and print on stdout. */ |
430 | |
431 | static void |
432 | do_examine (fmt, addr) |
433 | struct format_data fmt; |
434 | CORE_ADDR addr; |
435 | { |
436 | register char format = 0; |
437 | register char size; |
438 | register int count = 1; |
439 | struct type *val_type; |
440 | register int i; |
441 | register int maxelts; |
442 | |
443 | format = fmt.format; |
444 | size = fmt.size; |
445 | count = fmt.count; |
446 | next_address = addr; |
447 | |
448 | /* String or instruction format implies fetch single bytes |
449 | regardless of the specified size. */ |
450 | if (format == 's' || format == 'i') |
451 | size = 'b'; |
452 | |
453 | if (size == 'b') |
454 | val_type = builtin_type_char; |
455 | else if (size == 'h') |
456 | val_type = builtin_type_short; |
457 | else if (size == 'w') |
458 | val_type = builtin_type_long; |
459 | else if (size == 'g') |
e91b87a3 |
460 | #ifndef LONG_LONG |
7b4ac7e1 |
461 | val_type = builtin_type_double; |
e91b87a3 |
462 | #else |
463 | val_type = builtin_type_long_long; |
464 | #endif |
7b4ac7e1 |
465 | |
466 | maxelts = 8; |
467 | if (size == 'w') |
468 | maxelts = 4; |
469 | if (size == 'g') |
470 | maxelts = 2; |
471 | if (format == 's' || format == 'i') |
472 | maxelts = 1; |
473 | |
474 | /* Print as many objects as specified in COUNT, at most maxelts per line, |
475 | with the address of the next one at the start of each line. */ |
476 | |
477 | while (count > 0) |
478 | { |
479 | print_address (next_address, stdout); |
4187119d |
480 | printf_filtered (":"); |
7b4ac7e1 |
481 | for (i = maxelts; |
482 | i > 0 && count > 0; |
483 | i--, count--) |
484 | { |
4187119d |
485 | printf_filtered ("\t"); |
e91b87a3 |
486 | /* Note that print_formatted sets next_address for the next |
487 | object. */ |
7b4ac7e1 |
488 | last_examine_address = next_address; |
489 | last_examine_value = value_at (val_type, next_address); |
632ea0cc |
490 | print_formatted (last_examine_value, format, size); |
7b4ac7e1 |
491 | } |
4187119d |
492 | printf_filtered ("\n"); |
7b4ac7e1 |
493 | fflush (stdout); |
494 | } |
495 | } |
496 | \f |
497 | static void |
498 | validate_format (fmt, cmdname) |
499 | struct format_data fmt; |
500 | char *cmdname; |
501 | { |
502 | if (fmt.size != 0) |
503 | error ("Size letters are meaningless in \"%s\" command.", cmdname); |
504 | if (fmt.count != 1) |
505 | error ("Item count other than 1 is meaningless in \"%s\" command.", |
506 | cmdname); |
507 | if (fmt.format == 'i' || fmt.format == 's') |
508 | error ("Format letter \"%c\" is meaningless in \"%s\" command.", |
509 | fmt.format, cmdname); |
510 | } |
511 | |
512 | static void |
513 | print_command (exp) |
514 | char *exp; |
515 | { |
516 | struct expression *expr; |
517 | register struct cleanup *old_chain = 0; |
518 | register char format = 0; |
519 | register value val; |
520 | struct format_data fmt; |
521 | int histindex; |
522 | int cleanup = 0; |
523 | |
524 | if (exp && *exp == '/') |
525 | { |
526 | exp++; |
527 | fmt = decode_format (&exp, last_format, 0); |
528 | validate_format (fmt, "print"); |
529 | last_format = format = fmt.format; |
530 | } |
531 | |
532 | if (exp && *exp) |
533 | { |
534 | expr = parse_c_expression (exp); |
535 | old_chain = make_cleanup (free_current_contents, &expr); |
536 | cleanup = 1; |
537 | val = evaluate_expression (expr); |
538 | } |
539 | else |
540 | val = access_value_history (0); |
541 | |
542 | histindex = record_latest_value (val); |
4187119d |
543 | if (histindex >= 0) printf_filtered ("$%d = ", histindex); |
7b4ac7e1 |
544 | |
632ea0cc |
545 | print_formatted (val, format, fmt.size); |
4187119d |
546 | printf_filtered ("\n"); |
7b4ac7e1 |
547 | |
548 | if (cleanup) |
549 | do_cleanups (old_chain); |
550 | } |
551 | |
552 | static void |
553 | output_command (exp) |
554 | char *exp; |
555 | { |
556 | struct expression *expr; |
557 | register struct cleanup *old_chain; |
558 | register char format = 0; |
559 | register value val; |
560 | struct format_data fmt; |
561 | |
562 | if (exp && *exp == '/') |
563 | { |
564 | exp++; |
565 | fmt = decode_format (&exp, 0, 0); |
566 | validate_format (fmt, "print"); |
567 | format = fmt.format; |
568 | } |
569 | |
570 | expr = parse_c_expression (exp); |
571 | old_chain = make_cleanup (free_current_contents, &expr); |
572 | |
573 | val = evaluate_expression (expr); |
574 | |
632ea0cc |
575 | print_formatted (val, format, fmt.size); |
7b4ac7e1 |
576 | |
577 | do_cleanups (old_chain); |
578 | } |
579 | |
580 | static void |
581 | set_command (exp) |
582 | char *exp; |
583 | { |
584 | struct expression *expr = parse_c_expression (exp); |
585 | register struct cleanup *old_chain |
586 | = make_cleanup (free_current_contents, &expr); |
587 | evaluate_expression (expr); |
588 | do_cleanups (old_chain); |
589 | } |
590 | |
591 | static void |
592 | address_info (exp) |
593 | char *exp; |
594 | { |
595 | register struct symbol *sym; |
596 | register CORE_ADDR val; |
e91b87a3 |
597 | int is_a_field_of_this; /* C++: lookup_symbol sets this to nonzero |
598 | if exp is a field of `this'. */ |
7b4ac7e1 |
599 | |
600 | if (exp == 0) |
601 | error ("Argument required."); |
602 | |
e91b87a3 |
603 | sym = lookup_symbol (exp, get_selected_block (), VAR_NAMESPACE, |
604 | &is_a_field_of_this); |
7b4ac7e1 |
605 | if (sym == 0) |
606 | { |
607 | register int i; |
608 | |
e91b87a3 |
609 | if (is_a_field_of_this) |
610 | { |
4187119d |
611 | printf ("Symbol \"%s\" is a field of the local class variable `this'\n", exp); |
e91b87a3 |
612 | return; |
613 | } |
614 | |
7b4ac7e1 |
615 | for (i = 0; i < misc_function_count; i++) |
616 | if (!strcmp (misc_function_vector[i].name, exp)) |
617 | break; |
618 | |
619 | if (i < misc_function_count) |
620 | printf ("Symbol \"%s\" is at 0x%x in a file compiled without -g.\n", |
621 | exp, misc_function_vector[i].address); |
622 | else |
623 | error ("No symbol \"%s\" in current context.", exp); |
624 | return; |
625 | } |
626 | |
627 | printf ("Symbol \"%s\" is ", SYMBOL_NAME (sym)); |
628 | val = SYMBOL_VALUE (sym); |
629 | |
630 | switch (SYMBOL_CLASS (sym)) |
631 | { |
632 | case LOC_CONST: |
633 | case LOC_CONST_BYTES: |
634 | printf ("constant"); |
635 | break; |
636 | |
637 | case LOC_LABEL: |
638 | printf ("a label at address 0x%x", val); |
639 | break; |
640 | |
641 | case LOC_REGISTER: |
642 | printf ("a variable in register %s", reg_names[val]); |
643 | break; |
644 | |
645 | case LOC_STATIC: |
646 | printf ("static at address 0x%x", val); |
647 | break; |
648 | |
bb7592f0 |
649 | case LOC_REGPARM: |
650 | printf ("an argument in register %s", reg_names[val]); |
651 | break; |
e91b87a3 |
652 | |
7b4ac7e1 |
653 | case LOC_ARG: |
654 | printf ("an argument at offset %d", val); |
655 | break; |
656 | |
657 | case LOC_LOCAL: |
658 | printf ("a local variable at frame offset %d", val); |
659 | break; |
660 | |
4187119d |
661 | case LOC_REF_ARG: |
662 | printf ("a reference argument at offset %d", val); |
663 | break; |
664 | |
7b4ac7e1 |
665 | case LOC_TYPEDEF: |
666 | printf ("a typedef"); |
667 | break; |
668 | |
669 | case LOC_BLOCK: |
670 | printf ("a function at address 0x%x", |
671 | BLOCK_START (SYMBOL_BLOCK_VALUE (sym))); |
672 | break; |
673 | } |
674 | printf (".\n"); |
675 | } |
676 | \f |
677 | static void |
678 | x_command (exp, from_tty) |
679 | char *exp; |
680 | int from_tty; |
681 | { |
682 | struct expression *expr; |
683 | struct format_data fmt; |
684 | struct cleanup *old_chain; |
4187119d |
685 | struct value *val; |
7b4ac7e1 |
686 | |
687 | fmt.format = last_format; |
688 | fmt.size = last_size; |
689 | fmt.count = 1; |
690 | |
691 | if (exp && *exp == '/') |
692 | { |
693 | exp++; |
694 | fmt = decode_format (&exp, last_format, last_size); |
695 | last_size = fmt.size; |
696 | last_format = fmt.format; |
697 | } |
698 | |
699 | /* If we have an expression, evaluate it and use it as the address. */ |
700 | |
701 | if (exp != 0 && *exp != 0) |
702 | { |
703 | expr = parse_c_expression (exp); |
704 | /* Cause expression not to be there any more |
705 | if this command is repeated with Newline. |
706 | But don't clobber a user-defined command's definition. */ |
707 | if (from_tty) |
708 | *exp = 0; |
709 | old_chain = make_cleanup (free_current_contents, &expr); |
4187119d |
710 | val = evaluate_expression (expr); |
1c997a4a |
711 | /* In rvalue contexts, such as this, functions are coerced into |
712 | pointers to functions. This makes "x/i main" work. */ |
713 | if (/* last_format == 'i' |
714 | && */ TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_FUNC |
4187119d |
715 | && VALUE_LVAL (val) == lval_memory) |
716 | next_address = VALUE_ADDRESS (val); |
717 | else |
718 | next_address = (CORE_ADDR) value_as_long (val); |
7b4ac7e1 |
719 | do_cleanups (old_chain); |
720 | } |
721 | |
722 | do_examine (fmt, next_address); |
723 | |
e91b87a3 |
724 | /* Set a couple of internal variables if appropriate. */ |
725 | if (last_examine_value) |
726 | { |
727 | /* Make last address examined available to the user as $_. */ |
728 | set_internalvar (lookup_internalvar ("_"), |
729 | value_from_long (builtin_type_int, |
730 | (LONGEST) last_examine_address)); |
731 | |
732 | /* Make contents of last address examined available to the user as $__.*/ |
733 | set_internalvar (lookup_internalvar ("__"), last_examine_value); |
734 | } |
7b4ac7e1 |
735 | } |
736 | \f |
737 | /* Commands for printing types of things. */ |
738 | |
739 | static void |
740 | whatis_command (exp) |
741 | char *exp; |
742 | { |
743 | struct expression *expr; |
744 | register value val; |
745 | register struct cleanup *old_chain; |
746 | |
747 | if (exp) |
748 | { |
749 | expr = parse_c_expression (exp); |
750 | old_chain = make_cleanup (free_current_contents, &expr); |
751 | val = evaluate_type (expr); |
752 | } |
753 | else |
754 | val = access_value_history (0); |
755 | |
4187119d |
756 | printf_filtered ("type = "); |
757 | /* Most of the time users do not want to see all the fields |
758 | in a structure. If they do they can use the "ptype" command. |
759 | Hence the "-1" below. */ |
760 | type_print (VALUE_TYPE (val), "", stdout, -1); |
761 | printf_filtered ("\n"); |
7b4ac7e1 |
762 | |
763 | if (exp) |
764 | do_cleanups (old_chain); |
765 | } |
766 | |
767 | static void |
768 | ptype_command (typename) |
769 | char *typename; |
770 | { |
771 | register char *p = typename; |
772 | register int len; |
773 | extern struct block *get_current_block (); |
774 | register struct block *b |
775 | = (have_inferior_p () || have_core_file_p ()) ? get_current_block () : 0; |
776 | register struct type *type; |
777 | |
778 | if (typename == 0) |
779 | error_no_arg ("type name"); |
780 | |
781 | while (*p && *p != ' ' && *p != '\t') p++; |
782 | len = p - typename; |
783 | while (*p == ' ' || *p == '\t') p++; |
784 | |
785 | if (len == 6 && !strncmp (typename, "struct", 6)) |
786 | type = lookup_struct (p, b); |
787 | else if (len == 5 && !strncmp (typename, "union", 5)) |
788 | type = lookup_union (p, b); |
789 | else if (len == 4 && !strncmp (typename, "enum", 4)) |
790 | type = lookup_enum (p, b); |
791 | else |
792 | { |
793 | type = lookup_typename (typename, b, 1); |
794 | if (type == 0) |
795 | { |
796 | register struct symbol *sym |
e91b87a3 |
797 | = lookup_symbol (typename, b, STRUCT_NAMESPACE, 0); |
7b4ac7e1 |
798 | if (sym == 0) |
799 | error ("No type named %s.", typename); |
4187119d |
800 | printf_filtered ("No type named %s, but there is a ", |
7b4ac7e1 |
801 | typename); |
802 | switch (TYPE_CODE (SYMBOL_TYPE (sym))) |
803 | { |
804 | case TYPE_CODE_STRUCT: |
4187119d |
805 | printf_filtered ("struct"); |
7b4ac7e1 |
806 | break; |
807 | |
808 | case TYPE_CODE_UNION: |
4187119d |
809 | printf_filtered ("union"); |
7b4ac7e1 |
810 | break; |
811 | |
812 | case TYPE_CODE_ENUM: |
4187119d |
813 | printf_filtered ("enum"); |
7b4ac7e1 |
814 | } |
4187119d |
815 | printf_filtered (" %s. Type \"help ptype\".\n", typename); |
7b4ac7e1 |
816 | type = SYMBOL_TYPE (sym); |
817 | } |
818 | } |
819 | |
820 | type_print (type, "", stdout, 1); |
4187119d |
821 | printf_filtered ("\n"); |
7b4ac7e1 |
822 | } |
823 | \f |
e91b87a3 |
824 | enum display_status {disabled, enabled}; |
825 | |
7b4ac7e1 |
826 | struct display |
827 | { |
828 | /* Chain link to next auto-display item. */ |
829 | struct display *next; |
830 | /* Expression to be evaluated and displayed. */ |
831 | struct expression *exp; |
832 | /* Item number of this auto-display item. */ |
833 | int number; |
834 | /* Display format specified. */ |
835 | struct format_data format; |
e91b87a3 |
836 | /* Innermost block required by this expression when evaluated */ |
7b4ac7e1 |
837 | struct block *block; |
e91b87a3 |
838 | /* Status of this display (enabled or disabled) */ |
839 | enum display_status status; |
7b4ac7e1 |
840 | }; |
841 | |
842 | /* Chain of expressions whose values should be displayed |
843 | automatically each time the program stops. */ |
844 | |
845 | static struct display *display_chain; |
846 | |
847 | static int display_number; |
848 | |
849 | /* Add an expression to the auto-display chain. |
850 | Specify the expression. */ |
851 | |
852 | static void |
3bf57d21 |
853 | display_command (exp, from_tty) |
7b4ac7e1 |
854 | char *exp; |
3bf57d21 |
855 | int from_tty; |
7b4ac7e1 |
856 | { |
857 | struct format_data fmt; |
858 | register struct expression *expr; |
859 | register struct display *new; |
e91b87a3 |
860 | extern struct block *innermost_block; |
7b4ac7e1 |
861 | |
862 | if (exp == 0) |
863 | { |
864 | do_displays (); |
865 | return; |
866 | } |
867 | |
868 | if (*exp == '/') |
869 | { |
870 | exp++; |
871 | fmt = decode_format (&exp, 0, 0); |
872 | if (fmt.size && fmt.format == 0) |
873 | fmt.format = 'x'; |
874 | if (fmt.format == 'i' || fmt.format == 's') |
875 | fmt.size = 'b'; |
876 | } |
877 | else |
878 | { |
879 | fmt.format = 0; |
880 | fmt.size = 0; |
881 | fmt.count = 0; |
882 | } |
883 | |
e91b87a3 |
884 | innermost_block = 0; |
7b4ac7e1 |
885 | expr = parse_c_expression (exp); |
886 | |
887 | new = (struct display *) xmalloc (sizeof (struct display)); |
888 | |
889 | new->exp = expr; |
e91b87a3 |
890 | new->block = innermost_block; |
7b4ac7e1 |
891 | new->next = display_chain; |
892 | new->number = ++display_number; |
893 | new->format = fmt; |
e91b87a3 |
894 | new->status = enabled; |
7b4ac7e1 |
895 | display_chain = new; |
896 | |
e91b87a3 |
897 | if (from_tty && have_inferior_p ()) |
3bf57d21 |
898 | do_one_display (new); |
899 | |
7b4ac7e1 |
900 | dont_repeat (); |
901 | } |
902 | |
903 | static void |
904 | free_display (d) |
905 | struct display *d; |
906 | { |
907 | free (d->exp); |
908 | free (d); |
909 | } |
910 | |
911 | /* Clear out the display_chain. |
912 | Done when new symtabs are loaded, since this invalidates |
913 | the types stored in many expressions. */ |
914 | |
915 | void |
916 | clear_displays () |
917 | { |
918 | register struct display *d; |
919 | |
920 | while (d = display_chain) |
921 | { |
922 | free (d->exp); |
923 | display_chain = d->next; |
924 | free (d); |
925 | } |
926 | } |
927 | |
3bf57d21 |
928 | /* Delete the auto-display number NUM. */ |
929 | |
930 | void |
931 | delete_display (num) |
932 | int num; |
933 | { |
934 | register struct display *d1, *d; |
935 | |
936 | if (!display_chain) |
937 | error ("No display number %d.", num); |
938 | |
939 | if (display_chain->number == num) |
940 | { |
941 | d1 = display_chain; |
942 | display_chain = d1->next; |
943 | free_display (d1); |
944 | } |
945 | else |
946 | for (d = display_chain; ; d = d->next) |
947 | { |
948 | if (d->next == 0) |
949 | error ("No display number %d.", num); |
950 | if (d->next->number == num) |
951 | { |
952 | d1 = d->next; |
953 | d->next = d1->next; |
954 | free_display (d1); |
955 | break; |
956 | } |
957 | } |
958 | } |
959 | |
7b4ac7e1 |
960 | /* Delete some values from the auto-display chain. |
961 | Specify the element numbers. */ |
962 | |
963 | static void |
964 | undisplay_command (args) |
965 | char *args; |
966 | { |
967 | register char *p = args; |
968 | register char *p1; |
969 | register int num; |
970 | register struct display *d, *d1; |
971 | |
972 | if (args == 0) |
973 | { |
974 | if (query ("Delete all auto-display expressions? ")) |
975 | clear_displays (); |
976 | dont_repeat (); |
977 | return; |
978 | } |
979 | |
980 | while (*p) |
981 | { |
982 | p1 = p; |
983 | while (*p1 >= '0' && *p1 <= '9') p1++; |
984 | if (*p1 && *p1 != ' ' && *p1 != '\t') |
985 | error ("Arguments must be display numbers."); |
986 | |
987 | num = atoi (p); |
988 | |
3bf57d21 |
989 | delete_display (num); |
7b4ac7e1 |
990 | |
991 | p = p1; |
992 | while (*p == ' ' || *p == '\t') p++; |
993 | } |
994 | dont_repeat (); |
995 | } |
996 | |
e91b87a3 |
997 | /* Display a single auto-display. |
998 | Do nothing if the display cannot be printed in the current context, |
999 | or if the display is disabled. */ |
3bf57d21 |
1000 | |
1001 | static void |
1002 | do_one_display (d) |
1003 | struct display *d; |
1004 | { |
e91b87a3 |
1005 | int within_current_scope; |
1006 | |
1007 | if (d->status == disabled) |
1008 | return; |
1009 | |
1010 | if (d->block) |
1011 | within_current_scope = contained_in (get_selected_block (), d->block); |
1012 | else |
1013 | within_current_scope = 1; |
1014 | if (!within_current_scope) |
1015 | return; |
1016 | |
3bf57d21 |
1017 | current_display_number = d->number; |
1018 | |
4187119d |
1019 | printf_filtered ("%d: ", d->number); |
3bf57d21 |
1020 | if (d->format.size) |
1021 | { |
4187119d |
1022 | printf_filtered ("x/"); |
3bf57d21 |
1023 | if (d->format.count != 1) |
4187119d |
1024 | printf_filtered ("%d", d->format.count); |
1025 | printf_filtered ("%c", d->format.format); |
3bf57d21 |
1026 | if (d->format.format != 'i' && d->format.format != 's') |
4187119d |
1027 | printf_filtered ("%c", d->format.size); |
1028 | printf_filtered (" "); |
3bf57d21 |
1029 | print_expression (d->exp, stdout); |
1030 | if (d->format.count != 1) |
4187119d |
1031 | printf_filtered ("\n"); |
3bf57d21 |
1032 | else |
4187119d |
1033 | printf_filtered (" "); |
3bf57d21 |
1034 | do_examine (d->format, |
e91b87a3 |
1035 | (CORE_ADDR) value_as_long (evaluate_expression (d->exp))); |
1036 | |
3bf57d21 |
1037 | } |
1038 | else |
1039 | { |
1040 | if (d->format.format) |
4187119d |
1041 | printf_filtered ("/%c ", d->format.format); |
3bf57d21 |
1042 | print_expression (d->exp, stdout); |
4187119d |
1043 | printf_filtered (" = "); |
3bf57d21 |
1044 | print_formatted (evaluate_expression (d->exp), |
1045 | d->format.format, d->format.size); |
4187119d |
1046 | printf_filtered ("\n"); |
3bf57d21 |
1047 | } |
1048 | |
1049 | fflush (stdout); |
1050 | current_display_number = -1; |
1051 | } |
1052 | |
e91b87a3 |
1053 | /* Display all of the values on the auto-display chain which can be |
1054 | evaluated in the current scope. */ |
7b4ac7e1 |
1055 | |
1056 | void |
1057 | do_displays () |
1058 | { |
1059 | register struct display *d; |
1060 | |
1061 | for (d = display_chain; d; d = d->next) |
3bf57d21 |
1062 | do_one_display (d); |
1063 | } |
1064 | |
1065 | /* Delete the auto-display which we were in the process of displaying. |
1066 | This is done when there is an error or a signal. */ |
1067 | |
1068 | void |
4187119d |
1069 | disable_display (num) |
1070 | int num; |
1071 | { |
1072 | register struct display *d; |
1073 | |
1074 | for (d = display_chain; d; d = d->next) |
1075 | if (d->number == num) |
1076 | { |
1077 | d->status = disabled; |
1078 | return; |
1079 | } |
1080 | printf ("No display number %d.\n", num); |
1081 | } |
1082 | |
1083 | void |
1084 | disable_current_display () |
3bf57d21 |
1085 | { |
1086 | if (current_display_number >= 0) |
7b4ac7e1 |
1087 | { |
4187119d |
1088 | disable_display (current_display_number); |
1089 | fprintf (stderr, "Disabling display %d to avoid infinite recursion.\n", |
3bf57d21 |
1090 | current_display_number); |
7b4ac7e1 |
1091 | } |
3bf57d21 |
1092 | current_display_number = -1; |
7b4ac7e1 |
1093 | } |
1094 | |
1095 | static void |
1096 | display_info () |
1097 | { |
1098 | register struct display *d; |
1099 | |
1100 | if (!display_chain) |
1101 | printf ("There are no auto-display expressions now.\n"); |
1102 | else |
4187119d |
1103 | printf_filtered ("Auto-display expressions now in effect:\n\ |
e91b87a3 |
1104 | Num Enb Expression\n"); |
1105 | |
7b4ac7e1 |
1106 | for (d = display_chain; d; d = d->next) |
1107 | { |
4187119d |
1108 | printf_filtered ("%d: %c ", d->number, "ny"[(int)d->status]); |
7b4ac7e1 |
1109 | if (d->format.size) |
4187119d |
1110 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, |
7b4ac7e1 |
1111 | d->format.format); |
1112 | else if (d->format.format) |
4187119d |
1113 | printf_filtered ("/%c ", d->format.format); |
7b4ac7e1 |
1114 | print_expression (d->exp, stdout); |
e91b87a3 |
1115 | if (d->block && !contained_in (get_selected_block (), d->block)) |
4187119d |
1116 | printf_filtered (" (cannot be evaluated in the current context)"); |
1117 | printf_filtered ("\n"); |
7b4ac7e1 |
1118 | fflush (stdout); |
1119 | } |
1120 | } |
e91b87a3 |
1121 | |
1122 | void |
1123 | enable_display (args) |
1124 | char *args; |
1125 | { |
1126 | register char *p = args; |
1127 | register char *p1; |
1128 | register int num; |
1129 | register struct display *d; |
1130 | |
1131 | if (p == 0) |
1132 | { |
4187119d |
1133 | for (d = display_chain; d; d = d->next) |
e91b87a3 |
1134 | d->status = enabled; |
1135 | } |
1136 | else |
1137 | while (*p) |
1138 | { |
1139 | p1 = p; |
1140 | while (*p1 >= '0' && *p1 <= '9') |
1141 | p1++; |
1142 | if (*p1 && *p1 != ' ' && *p1 != '\t') |
1143 | error ("Arguments must be display numbers."); |
1144 | |
1145 | num = atoi (p); |
1146 | |
1147 | for (d = display_chain; d; d = d->next) |
1148 | if (d->number == num) |
1149 | { |
1150 | d->status = enabled; |
1151 | goto win; |
1152 | } |
1153 | printf ("No display number %d.\n", num); |
1154 | win: |
1155 | p = p1; |
1156 | while (*p == ' ' || *p == '\t') |
1157 | p++; |
1158 | } |
1159 | } |
1160 | |
1161 | void |
4187119d |
1162 | disable_display_command (args, from_tty) |
e91b87a3 |
1163 | char *args; |
4187119d |
1164 | int from_tty; |
e91b87a3 |
1165 | { |
1166 | register char *p = args; |
1167 | register char *p1; |
1168 | register int num; |
1169 | register struct display *d; |
1170 | |
1171 | if (p == 0) |
1172 | { |
4187119d |
1173 | for (d = display_chain; d; d = d->next) |
e91b87a3 |
1174 | d->status = disabled; |
1175 | } |
1176 | else |
1177 | while (*p) |
1178 | { |
1179 | p1 = p; |
1180 | while (*p1 >= '0' && *p1 <= '9') |
1181 | p1++; |
1182 | if (*p1 && *p1 != ' ' && *p1 != '\t') |
1183 | error ("Arguments must be display numbers."); |
1184 | |
1185 | num = atoi (p); |
1186 | |
4187119d |
1187 | disable_display (atoi (p)); |
1188 | |
e91b87a3 |
1189 | p = p1; |
1190 | while (*p == ' ' || *p == '\t') |
1191 | p++; |
1192 | } |
1193 | } |
1194 | |
7b4ac7e1 |
1195 | \f |
1196 | /* Print the value in stack frame FRAME of a variable |
1197 | specified by a struct symbol. */ |
1198 | |
1199 | void |
1200 | print_variable_value (var, frame, stream) |
1201 | struct symbol *var; |
1202 | CORE_ADDR frame; |
1203 | FILE *stream; |
1204 | { |
1205 | value val = read_var_value (var, frame); |
4187119d |
1206 | value_print (val, stream, 0, Val_pretty_default); |
1207 | } |
1208 | |
1209 | static int |
1210 | compare_ints (i, j) |
1211 | int *i, *j; |
1212 | { |
1213 | return *i - *j; |
7b4ac7e1 |
1214 | } |
1215 | |
1216 | /* Print the arguments of a stack frame, given the function FUNC |
e91b87a3 |
1217 | running in that frame (as a symbol), the info on the frame, |
7b4ac7e1 |
1218 | and the number of args according to the stack frame (or -1 if unknown). */ |
1219 | |
1220 | static void print_frame_nameless_args (); |
1221 | |
e91b87a3 |
1222 | void |
1223 | print_frame_args (func, fi, num, stream) |
7b4ac7e1 |
1224 | struct symbol *func; |
e91b87a3 |
1225 | struct frame_info *fi; |
7b4ac7e1 |
1226 | int num; |
1227 | FILE *stream; |
1228 | { |
1229 | struct block *b; |
1230 | int nsyms = 0; |
1231 | int first = 1; |
1232 | register int i; |
bb7592f0 |
1233 | register int last_regparm = 0; |
e91b87a3 |
1234 | register struct symbol *lastsym, *sym, *nextsym; |
7b4ac7e1 |
1235 | register value val; |
7a67dd45 |
1236 | /* Offset of stack argument that is at the highest offset. |
1237 | -1 if we haven't come to a stack argument yet. */ |
1238 | CORE_ADDR highest_offset = (CORE_ADDR) -1; |
e91b87a3 |
1239 | register CORE_ADDR addr = FRAME_ARGS_ADDRESS (fi); |
7b4ac7e1 |
1240 | |
1241 | if (func) |
1242 | { |
1243 | b = SYMBOL_BLOCK_VALUE (func); |
1244 | nsyms = BLOCK_NSYMS (b); |
1245 | } |
1246 | |
4187119d |
1247 | for (i = 0; i < nsyms; i++) |
7b4ac7e1 |
1248 | { |
4187119d |
1249 | QUIT; |
1250 | sym = BLOCK_SYM (b, i); |
1251 | |
1252 | if (SYMBOL_CLASS (sym) != LOC_REGPARM |
1253 | && SYMBOL_CLASS (sym) != LOC_ARG |
1254 | && SYMBOL_CLASS (sym) != LOC_REF_ARG) |
1255 | continue; |
1256 | |
7b4ac7e1 |
1257 | /* Print the next arg. */ |
bb7592f0 |
1258 | if (SYMBOL_CLASS (sym) == LOC_REGPARM) |
e91b87a3 |
1259 | val = value_from_register (SYMBOL_TYPE (sym), |
1260 | SYMBOL_VALUE (sym), |
1261 | FRAME_INFO_ID (fi)); |
bb7592f0 |
1262 | else |
4187119d |
1263 | { |
1264 | int current_offset = SYMBOL_VALUE (sym); |
1265 | int arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); |
1266 | |
1267 | if (SYMBOL_CLASS (sym) == LOC_REF_ARG) |
1268 | val = value_at (SYMBOL_TYPE (sym), |
1269 | read_memory_integer (addr + current_offset, |
1270 | sizeof (CORE_ADDR))); |
1271 | else |
1272 | val = value_at (SYMBOL_TYPE (sym), addr + current_offset); |
1273 | |
1274 | /* Round up address of next arg to multiple of size of int. */ |
1275 | current_offset |
1276 | = (((current_offset + sizeof (int) - 1) / sizeof (int)) |
1277 | * sizeof (int)); |
7a67dd45 |
1278 | |
1279 | /* If this is the highest offset seen yet, set highest_offset. */ |
1280 | if (highest_offset == (CORE_ADDR)-1 |
1281 | || ((current_offset |
1282 | + (arg_size - sizeof (int) + 3) / (sizeof (int))) |
1283 | > highest_offset)) |
4187119d |
1284 | highest_offset = current_offset; |
1285 | } |
bb7592f0 |
1286 | |
7b4ac7e1 |
1287 | if (! first) |
4187119d |
1288 | fprintf_filtered (stream, ", "); |
1289 | fputs_filtered (SYMBOL_NAME (sym), stream); |
1290 | fputs_filtered ("=", stream); |
7a67dd45 |
1291 | |
1292 | /* Nonzero if a LOC_ARG which is a struct is useless. */ |
1293 | #if !defined (STRUCT_ARG_SYM_GARBAGE) |
1294 | #define STRUCT_ARG_SYM_GARBAGE(gcc_p) 0 |
1295 | #endif |
1296 | |
1297 | if (STRUCT_ARG_SYM_GARBAGE (b->gcc_compile_flag) |
1298 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT |
1299 | && SYMBOL_CLASS (sym) == LOC_ARG) |
1300 | { |
1301 | /* Try looking up that name. SunOS4 puts out a usable |
1302 | symbol as a local variable (in addition to the one |
1303 | for the arg). */ |
1304 | struct symbol *sym2 = |
1305 | lookup_symbol (SYMBOL_NAME (sym), b, VAR_NAMESPACE, 0); |
1306 | |
1307 | if (sym2 != NULL) |
1308 | val = value_of_variable (sym2); |
1309 | else |
1310 | { |
1311 | fputs_filtered ("?", stream); |
1312 | first = 0; |
1313 | continue; |
1314 | } |
1315 | } |
1316 | |
4187119d |
1317 | value_print (val, stream, 0, Val_no_prettyprint); |
7b4ac7e1 |
1318 | first = 0; |
7b4ac7e1 |
1319 | } |
4187119d |
1320 | |
1321 | /* Don't print nameless args in situations where we don't know |
1322 | enough about the stack to find them. */ |
1323 | if (num != -1) |
1324 | { |
7a67dd45 |
1325 | if (highest_offset != (CORE_ADDR) -1 |
1326 | && num * sizeof (int) + FRAME_ARGS_SKIP > highest_offset) |
4187119d |
1327 | print_frame_nameless_args (addr, |
1328 | highest_offset + sizeof (int), |
1329 | num * sizeof (int) + FRAME_ARGS_SKIP, |
1330 | stream); |
1331 | else |
1332 | print_frame_nameless_args (addr, FRAME_ARGS_SKIP, |
1333 | num * sizeof (int) + FRAME_ARGS_SKIP, |
1334 | stream); |
1335 | } |
7b4ac7e1 |
1336 | } |
1337 | |
1338 | static void |
1339 | print_frame_nameless_args (argsaddr, start, end, stream) |
1340 | CORE_ADDR argsaddr; |
1341 | int start; |
1342 | int end; |
1343 | FILE *stream; |
1344 | { |
1345 | while (start < end) |
1346 | { |
1347 | QUIT; |
1348 | if (start != FRAME_ARGS_SKIP) |
4187119d |
1349 | fprintf_filtered (stream, ", "); |
1350 | #ifndef PRINT_TYPELESS_INTEGER |
1351 | fprintf_filtered (stream, "%d", |
7b4ac7e1 |
1352 | read_memory_integer (argsaddr + start, sizeof (int))); |
4187119d |
1353 | #else |
1354 | PRINT_TYPELESS_INTEGER (stream, builtin_type_int, |
1355 | (LONGEST) |
1356 | read_memory_integer (argsaddr + start, |
1357 | sizeof (int))); |
1358 | #endif |
7b4ac7e1 |
1359 | start += sizeof (int); |
1360 | } |
1361 | } |
1362 | \f |
632ea0cc |
1363 | static void |
1364 | printf_command (arg) |
1365 | char *arg; |
1366 | { |
1367 | register char *f; |
1368 | register char *s = arg; |
1369 | char *string; |
1370 | value *val_args; |
1371 | int nargs = 0; |
1372 | int allocated_args = 20; |
1373 | char *arg_bytes; |
632ea0cc |
1374 | |
1375 | val_args = (value *) xmalloc (allocated_args * sizeof (value)); |
1376 | |
1377 | if (s == 0) |
1378 | error_no_arg ("format-control string and values to print"); |
1379 | |
1380 | /* Skip white space before format string */ |
1381 | while (*s == ' ' || *s == '\t') s++; |
1382 | |
1383 | /* A format string should follow, enveloped in double quotes */ |
1384 | if (*s++ != '"') |
1385 | error ("Bad format string, missing '\"'."); |
1386 | |
1387 | /* Parse the format-control string and copy it into the string STRING, |
1388 | processing some kinds of escape sequence. */ |
1389 | |
1390 | f = string = (char *) alloca (strlen (s) + 1); |
1391 | while (*s != '"') |
1392 | { |
1393 | int c = *s++; |
1394 | switch (c) |
1395 | { |
1396 | case '\0': |
1397 | error ("Bad format string, non-terminated '\"'."); |
1398 | /* doesn't return */ |
1399 | |
1400 | case '\\': |
1401 | switch (c = *s++) |
1402 | { |
1403 | case '\\': |
1404 | *f++ = '\\'; |
1405 | break; |
1406 | case 'n': |
1407 | *f++ = '\n'; |
1408 | break; |
1409 | case 't': |
1410 | *f++ = '\t'; |
1411 | break; |
1412 | case 'r': |
1413 | *f++ = '\r'; |
1414 | break; |
1415 | case '"': |
1416 | *f++ = '"'; |
1417 | break; |
1418 | default: |
1419 | /* ??? TODO: handle other escape sequences */ |
1420 | error ("Unrecognized \\ escape character in format string."); |
1421 | } |
1422 | break; |
1423 | |
1424 | default: |
1425 | *f++ = c; |
1426 | } |
1427 | } |
1428 | |
1429 | /* Skip over " and following space and comma. */ |
1430 | s++; |
1431 | *f++ = '\0'; |
1432 | while (*s == ' ' || *s == '\t') s++; |
1433 | |
1434 | if (*s != ',' && *s != 0) |
1435 | error ("Invalid argument syntax"); |
1436 | |
1437 | if (*s == ',') s++; |
1438 | while (*s == ' ' || *s == '\t') s++; |
1439 | |
4187119d |
1440 | { |
1441 | /* Now scan the string for %-specs and see what kinds of args they want. |
1442 | argclass[I] classifies the %-specs so we can give vprintf something |
1443 | of the right size. */ |
1444 | |
1445 | enum argclass {int_arg, string_arg, double_arg, long_long_arg}; |
1446 | enum argclass *argclass; |
1447 | int nargs_wanted; |
1448 | int argindex; |
1449 | int lcount; |
1450 | int i; |
1451 | |
1452 | argclass = (enum argclass *) alloca (strlen (s) * sizeof *argclass); |
1453 | nargs_wanted = 0; |
1454 | f = string; |
1455 | while (*f) |
1456 | if (*f++ == '%') |
1457 | { |
1458 | lcount = 0; |
1459 | while (index ("0123456789.hlL-+ #", *f)) |
1460 | { |
1461 | if (*f == 'l' || *f == 'L') |
1462 | lcount++; |
1463 | f++; |
1464 | } |
1465 | if (*f == 's') |
1466 | argclass[nargs_wanted++] = string_arg; |
1467 | else if (*f == 'e' || *f == 'f' || *f == 'g') |
1468 | argclass[nargs_wanted++] = double_arg; |
1469 | else if (lcount > 1) |
1470 | argclass[nargs_wanted++] = long_long_arg; |
1471 | else if (*f != '%') |
1472 | argclass[nargs_wanted++] = int_arg; |
1473 | f++; |
1474 | } |
1475 | |
1476 | /* Now, parse all arguments and evaluate them. |
1477 | Store the VALUEs in VAL_ARGS. */ |
1478 | |
1479 | while (*s != '\0') |
632ea0cc |
1480 | { |
4187119d |
1481 | char *s1; |
1482 | if (nargs == allocated_args) |
1483 | val_args = (value *) xrealloc (val_args, |
1484 | (allocated_args *= 2) |
1485 | * sizeof (value)); |
1486 | s1 = s; |
1487 | val_args[nargs] = parse_to_comma_and_eval (&s1); |
1488 | |
1489 | /* If format string wants a float, unchecked-convert the value to |
1490 | floating point of the same size */ |
1491 | |
1492 | if (argclass[nargs] == double_arg) |
1493 | { |
1494 | if (TYPE_LENGTH (VALUE_TYPE (val_args[nargs])) == sizeof (float)) |
1495 | VALUE_TYPE (val_args[nargs]) = builtin_type_float; |
1496 | if (TYPE_LENGTH (VALUE_TYPE (val_args[nargs])) == sizeof (double)) |
1497 | VALUE_TYPE (val_args[nargs]) = builtin_type_double; |
1498 | } |
1499 | nargs++; |
1500 | s = s1; |
1501 | if (*s == ',') |
1502 | s++; |
1503 | } |
1504 | |
1505 | if (nargs != nargs_wanted) |
1506 | error ("Wrong number of arguments for specified format-string"); |
1507 | |
1508 | /* Now lay out an argument-list containing the arguments |
1509 | as doubles, integers and C pointers. */ |
1510 | |
1511 | arg_bytes = (char *) alloca (sizeof (double) * nargs); |
1512 | argindex = 0; |
1513 | for (i = 0; i < nargs; i++) |
1514 | { |
1515 | if (argclass[i] == string_arg) |
1516 | { |
1517 | char *str; |
1518 | int tem, j; |
1519 | tem = value_as_long (val_args[i]); |
1520 | |
1521 | /* This is a %s argument. Find the length of the string. */ |
1522 | for (j = 0; ; j++) |
1523 | { |
1524 | char c; |
1525 | QUIT; |
1526 | read_memory (tem + j, &c, 1); |
1527 | if (c == 0) |
1528 | break; |
1529 | } |
1530 | |
1531 | /* Copy the string contents into a string inside GDB. */ |
1532 | str = (char *) alloca (j + 1); |
1533 | read_memory (tem, str, j); |
1534 | str[j] = 0; |
1535 | |
1536 | /* Pass address of internal copy as the arg to vprintf. */ |
1537 | *((int *) &arg_bytes[argindex]) = (int) str; |
1538 | argindex += sizeof (int); |
1539 | } |
1540 | else if (VALUE_TYPE (val_args[i])->code == TYPE_CODE_FLT) |
1541 | { |
1542 | *((double *) &arg_bytes[argindex]) = value_as_double (val_args[i]); |
1543 | argindex += sizeof (double); |
1544 | } |
1545 | else |
1546 | #ifdef LONG_LONG |
1547 | if (argclass[i] == long_long_arg) |
1548 | { |
1549 | *(long long *) &arg_bytes[argindex] = value_as_long (val_args[i]); |
1550 | argindex += sizeof (long long); |
1551 | } |
1552 | else |
1553 | #endif |
1554 | { |
1555 | *((int *) &arg_bytes[argindex]) = value_as_long (val_args[i]); |
1556 | argindex += sizeof (int); |
1557 | } |
632ea0cc |
1558 | } |
4187119d |
1559 | } |
1560 | vprintf (string, arg_bytes); |
1561 | } |
1562 | \f |
1563 | /* Helper function for asdump_command. Finds the bounds of a function |
1564 | for a specified section of text. PC is an address within the |
1565 | function which you want bounds for; *LOW and *HIGH are set to the |
1566 | beginning (inclusive) and end (exclusive) of the function. This |
1567 | function returns 1 on success and 0 on failure. */ |
1568 | |
1569 | static int |
1570 | containing_function_bounds (pc, low, high) |
1571 | CORE_ADDR pc, *low, *high; |
1572 | { |
1573 | int scan; |
632ea0cc |
1574 | |
4187119d |
1575 | if (!find_pc_partial_function (pc, 0, low)) |
1576 | return 0; |
632ea0cc |
1577 | |
4187119d |
1578 | scan = *low; |
1579 | do { |
1580 | scan++; |
1581 | if (!find_pc_partial_function (scan, 0, high)) |
1582 | return 0; |
1583 | } while (*low == *high); |
632ea0cc |
1584 | |
4187119d |
1585 | return 1; |
1586 | } |
632ea0cc |
1587 | |
4187119d |
1588 | /* Dump a specified section of assembly code. With no command line |
1589 | arguments, this command will dump the assembly code for the |
1590 | function surrounding the pc value in the selected frame. With one |
1591 | argument, it will dump the assembly code surrounding that pc value. |
1592 | Two arguments are interpeted as bounds within which to dump |
1593 | assembly. */ |
632ea0cc |
1594 | |
4187119d |
1595 | static void |
1596 | disassemble_command (arg, from_tty) |
1597 | char *arg; |
1598 | int from_tty; |
1599 | { |
1600 | CORE_ADDR low, high; |
1601 | CORE_ADDR pc; |
1602 | char *space_index; |
632ea0cc |
1603 | |
4187119d |
1604 | if (!arg) |
1605 | { |
1606 | if (!selected_frame) |
1607 | error ("No frame selected.\n"); |
632ea0cc |
1608 | |
4187119d |
1609 | pc = get_frame_pc (selected_frame); |
1610 | if (!containing_function_bounds (pc, &low, &high)) |
1611 | error ("No function contains pc specified by selected frame.\n"); |
1612 | } |
1613 | else if (!(space_index = (char *) index (arg, ' '))) |
1614 | { |
1615 | /* One argument. */ |
1616 | pc = parse_and_eval_address (arg); |
1617 | if (!containing_function_bounds (pc, &low, &high)) |
1618 | error ("No function contains specified pc.\n"); |
1619 | } |
1620 | else |
1621 | { |
1622 | /* Two arguments. */ |
1623 | *space_index = '\0'; |
1624 | low = parse_and_eval_address (arg); |
1625 | high = parse_and_eval_address (space_index + 1); |
1626 | } |
632ea0cc |
1627 | |
4187119d |
1628 | printf_filtered ("Dump of assembler code "); |
1629 | if (!space_index) |
1630 | { |
1631 | char *name; |
1632 | find_pc_partial_function (pc, &name, 0); |
1633 | printf_filtered ("for function %s:\n", name); |
632ea0cc |
1634 | } |
4187119d |
1635 | else |
1636 | printf_filtered ("from 0x%x to 0x%x:\n", low, high); |
632ea0cc |
1637 | |
4187119d |
1638 | /* Dump the specified range. */ |
1639 | for (pc = low; pc < high; ) |
1640 | { |
1641 | QUIT; |
1642 | print_address (pc, stdout); |
1643 | printf_filtered (":\t"); |
1644 | pc += print_insn (pc, stdout); |
1645 | printf_filtered ("\n"); |
1646 | } |
1647 | printf_filtered ("End of assembler dump.\n"); |
1648 | fflush (stdout); |
632ea0cc |
1649 | } |
4187119d |
1650 | |
632ea0cc |
1651 | \f |
e91b87a3 |
1652 | extern struct cmd_list_element *enablelist, *disablelist, *deletelist; |
1653 | extern struct cmd_list_element *cmdlist, *setlist; |
1654 | |
1655 | void |
1656 | _initialize_printcmd () |
7b4ac7e1 |
1657 | { |
3bf57d21 |
1658 | current_display_number = -1; |
1659 | |
7b4ac7e1 |
1660 | add_info ("address", address_info, |
1661 | "Describe where variable VAR is stored."); |
1662 | |
1663 | add_com ("x", class_vars, x_command, |
1664 | "Examine memory: x/FMT ADDRESS.\n\ |
1665 | ADDRESS is an expression for the memory address to examine.\n\ |
1666 | FMT is a repeat count followed by a format letter and a size letter.\n\ |
1667 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ |
1668 | f(float), a(address), i(instruction), c(char) and s(string).\n\ |
1669 | Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ |
1670 | g is meaningful only with f, for type double.\n\ |
1671 | The specified number of objects of the specified size are printed\n\ |
1672 | according to the format.\n\n\ |
1673 | Defaults for format and size letters are those previously used.\n\ |
1674 | Default count is 1. Default address is following last thing printed\n\ |
1675 | with this command or \"print\"."); |
1676 | |
4187119d |
1677 | add_com ("disassemble", class_vars, disassemble_command, |
1678 | "Disassemble a specified section of memory.\n\ |
1679 | Default is the function surrounding the pc of the selected frame.\n\ |
1680 | With a single argument, the function surrounding that address is dumped.\n\ |
1681 | Two arguments are taken as a range of memory to dump."); |
1682 | |
7b4ac7e1 |
1683 | add_com ("ptype", class_vars, ptype_command, |
1684 | "Print definition of type TYPE.\n\ |
1685 | Argument may be a type name defined by typedef, or \"struct STRUCTNAME\"\n\ |
1686 | or \"union UNIONNAME\" or \"enum ENUMNAME\".\n\ |
1687 | The selected stack frame's lexical context is used to look up the name."); |
1688 | |
1689 | add_com ("whatis", class_vars, whatis_command, |
1690 | "Print data type of expression EXP."); |
1691 | |
1692 | add_info ("display", display_info, |
1693 | "Expressions to display when program stops, with code numbers."); |
e91b87a3 |
1694 | |
4187119d |
1695 | add_cmd ("undisplay", class_vars, undisplay_command, |
e91b87a3 |
1696 | "Cancel some expressions to be displayed when program stops.\n\ |
7b4ac7e1 |
1697 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
1698 | No argument means cancel all automatic-display expressions.\n\ |
e91b87a3 |
1699 | \"delete display\" has the same effect as this command.\n\ |
1700 | Do \"info display\" to see current list of code numbers.", |
1701 | &cmdlist); |
1702 | |
7b4ac7e1 |
1703 | add_com ("display", class_vars, display_command, |
1704 | "Print value of expression EXP each time the program stops.\n\ |
1705 | /FMT may be used before EXP as in the \"print\" command.\n\ |
1706 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ |
1707 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ |
1708 | and examining is done as in the \"x\" command.\n\n\ |
1709 | With no argument, display all currently requested auto-display expressions.\n\ |
1710 | Use \"undisplay\" to cancel display requests previously made."); |
1711 | |
e91b87a3 |
1712 | add_cmd ("display", class_vars, enable_display, |
1713 | "Enable some expressions to be displayed when program stops.\n\ |
1714 | Arguments are the code numbers of the expressions to resume displaying.\n\ |
1715 | No argument means enable all automatic-display expressions.\n\ |
1716 | Do \"info display\" to see current list of code numbers.", &enablelist); |
1717 | |
4187119d |
1718 | add_cmd ("display", class_vars, disable_display_command, |
e91b87a3 |
1719 | "Disable some expressions to be displayed when program stops.\n\ |
1720 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
1721 | No argument means disable all automatic-display expressions.\n\ |
1722 | Do \"info display\" to see current list of code numbers.", &disablelist); |
1723 | |
1724 | add_cmd ("display", class_vars, undisplay_command, |
1725 | "Cancel some expressions to be displayed when program stops.\n\ |
1726 | Arguments are the code numbers of the expressions to stop displaying.\n\ |
1727 | No argument means cancel all automatic-display expressions.\n\ |
1728 | Do \"info display\" to see current list of code numbers.", &deletelist); |
1729 | |
632ea0cc |
1730 | add_com ("printf", class_vars, printf_command, |
1731 | "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ |
1732 | This is useful for formatted output in user-defined commands."); |
7b4ac7e1 |
1733 | add_com ("output", class_vars, output_command, |
1734 | "Like \"print\" but don't put in value history and don't print newline.\n\ |
1735 | This is useful in user-defined commands."); |
1736 | |
e91b87a3 |
1737 | add_prefix_cmd ("set", class_vars, set_command, |
1738 | "Perform an assignment VAR = EXP.\n\ |
1739 | You must type the \"=\". VAR may be a debugger \"convenience\" variable\n\ |
1740 | (names starting with $), a register (a few standard names starting with $),\n\ |
1741 | or an actual variable in the program being debugged. EXP is any expression.\n\ |
1742 | Use \"set variable\" for variables with names identical to set subcommands.\n\ |
1743 | \nWith a subcommand, this command modifies parts of the gdb environment", |
1744 | &setlist, "set ", 1, &cmdlist); |
1745 | |
1746 | add_cmd ("variable", class_vars, set_command, |
1747 | "Perform an assignment VAR = EXP.\n\ |
1748 | You must type the \"=\". VAR may be a debugger \"convenience\" variable\n\ |
1749 | (names starting with $), a register (a few standard names starting with $),\n\ |
1750 | or an actual variable in the program being debugged. EXP is any expression.\n\ |
1751 | This may usually be abbreviated to simply \"set\".", |
1752 | &setlist); |
7b4ac7e1 |
1753 | |
1754 | add_com ("print", class_vars, print_command, |
1755 | concat ("Print value of expression EXP.\n\ |
1756 | Variables accessible are those of the lexical environment of the selected\n\ |
1757 | stack frame, plus all those whose scope is global or an entire file.\n\ |
1758 | \n\ |
1759 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ |
1760 | $$NUM refers to NUM'th value back from the last one.\n\ |
1761 | Names starting with $ refer to registers (with the values they would have\n\ |
1762 | if the program were to return to the stack frame now selected, restoring\n\ |
1763 | all registers saved by frames farther in) or else to debugger\n\ |
1764 | \"convenience\" variables (any such name not a known register).\n\ |
1765 | Use assignment expressions to give values to convenience variables.\n", |
1766 | "\n\ |
1767 | \{TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ |
1768 | @ is a binary operator for treating consecutive data objects\n\ |
1769 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ |
1770 | element is FOO, whose second element is stored in the space following\n\ |
1771 | where FOO is stored, etc. FOO must be an expression whose value\n\ |
1772 | resides in memory.\n", |
1773 | "\n\ |
1774 | EXP may be preceded with /FMT, where FMT is a format letter\n\ |
1775 | but no count or size letter (see \"x\" command).")); |
1776 | add_com_alias ("p", "print", class_vars, 1); |
1777 | } |