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c906108c SS |
1 | /* Print values for GNU debugger GDB. |
2 | Copyright 1986, 87, 88, 89, 90, 91, 93, 94, 95, 1998 | |
3 | Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "defs.h" | |
22 | #include "gdb_string.h" | |
23 | #include "frame.h" | |
24 | #include "symtab.h" | |
25 | #include "gdbtypes.h" | |
26 | #include "value.h" | |
27 | #include "language.h" | |
28 | #include "expression.h" | |
29 | #include "gdbcore.h" | |
30 | #include "gdbcmd.h" | |
31 | #include "target.h" | |
32 | #include "breakpoint.h" | |
33 | #include "demangle.h" | |
34 | #include "valprint.h" | |
35 | #include "annotate.h" | |
36 | #include "symfile.h" /* for overlay functions */ | |
37 | #include "objfiles.h" /* ditto */ | |
38 | ||
39 | extern int asm_demangle; /* Whether to demangle syms in asm printouts */ | |
40 | extern int addressprint; /* Whether to print hex addresses in HLL " */ | |
41 | ||
42 | struct format_data | |
43 | { | |
44 | int count; | |
45 | char format; | |
46 | char size; | |
47 | }; | |
48 | ||
49 | /* Last specified output format. */ | |
50 | ||
51 | static char last_format = 'x'; | |
52 | ||
53 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
54 | ||
55 | static char last_size = 'w'; | |
56 | ||
57 | /* Default address to examine next. */ | |
58 | ||
59 | static CORE_ADDR next_address; | |
60 | ||
61 | /* Default section to examine next. */ | |
62 | ||
63 | static asection *next_section; | |
64 | ||
65 | /* Last address examined. */ | |
66 | ||
67 | static CORE_ADDR last_examine_address; | |
68 | ||
69 | /* Contents of last address examined. | |
70 | This is not valid past the end of the `x' command! */ | |
71 | ||
72 | static value_ptr last_examine_value; | |
73 | ||
74 | /* Largest offset between a symbolic value and an address, that will be | |
75 | printed as `0x1234 <symbol+offset>'. */ | |
76 | ||
77 | static unsigned int max_symbolic_offset = UINT_MAX; | |
78 | ||
79 | /* Append the source filename and linenumber of the symbol when | |
80 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
81 | static int print_symbol_filename = 0; | |
82 | ||
83 | /* Number of auto-display expression currently being displayed. | |
84 | So that we can disable it if we get an error or a signal within it. | |
85 | -1 when not doing one. */ | |
86 | ||
87 | int current_display_number; | |
88 | ||
89 | /* Flag to low-level print routines that this value is being printed | |
90 | in an epoch window. We'd like to pass this as a parameter, but | |
91 | every routine would need to take it. Perhaps we can encapsulate | |
92 | this in the I/O stream once we have GNU stdio. */ | |
93 | ||
94 | int inspect_it = 0; | |
95 | ||
96 | struct display | |
97 | { | |
98 | /* Chain link to next auto-display item. */ | |
99 | struct display *next; | |
100 | /* Expression to be evaluated and displayed. */ | |
101 | struct expression *exp; | |
102 | /* Item number of this auto-display item. */ | |
103 | int number; | |
104 | /* Display format specified. */ | |
105 | struct format_data format; | |
106 | /* Innermost block required by this expression when evaluated */ | |
107 | struct block *block; | |
108 | /* Status of this display (enabled or disabled) */ | |
109 | enum enable status; | |
110 | }; | |
111 | ||
112 | /* Chain of expressions whose values should be displayed | |
113 | automatically each time the program stops. */ | |
114 | ||
115 | static struct display *display_chain; | |
116 | ||
117 | static int display_number; | |
118 | ||
119 | /* Prototypes for exported functions. */ | |
120 | ||
121 | void output_command PARAMS ((char *, int)); | |
122 | ||
123 | void _initialize_printcmd PARAMS ((void)); | |
124 | ||
125 | /* Prototypes for local functions. */ | |
126 | ||
127 | static void delete_display PARAMS ((int)); | |
128 | ||
129 | static void enable_display PARAMS ((char *, int)); | |
130 | ||
131 | static void disable_display_command PARAMS ((char *, int)); | |
132 | ||
133 | static void disassemble_command PARAMS ((char *, int)); | |
134 | ||
135 | static void printf_command PARAMS ((char *, int)); | |
136 | ||
137 | static void print_frame_nameless_args PARAMS ((struct frame_info *, long, | |
138 | int, int, GDB_FILE *)); | |
139 | ||
140 | static void display_info PARAMS ((char *, int)); | |
141 | ||
142 | static void do_one_display PARAMS ((struct display *)); | |
143 | ||
144 | static void undisplay_command PARAMS ((char *, int)); | |
145 | ||
146 | static void free_display PARAMS ((struct display *)); | |
147 | ||
148 | static void display_command PARAMS ((char *, int)); | |
149 | ||
150 | void x_command PARAMS ((char *, int)); | |
151 | ||
152 | static void address_info PARAMS ((char *, int)); | |
153 | ||
154 | static void set_command PARAMS ((char *, int)); | |
155 | ||
156 | static void call_command PARAMS ((char *, int)); | |
157 | ||
158 | static void inspect_command PARAMS ((char *, int)); | |
159 | ||
160 | static void print_command PARAMS ((char *, int)); | |
161 | ||
162 | static void print_command_1 PARAMS ((char *, int, int)); | |
163 | ||
164 | static void validate_format PARAMS ((struct format_data, char *)); | |
165 | ||
166 | static void do_examine PARAMS ((struct format_data, CORE_ADDR addr, asection *section)); | |
167 | ||
168 | static void print_formatted PARAMS ((value_ptr, int, int)); | |
169 | ||
170 | static struct format_data decode_format PARAMS ((char **, int, int)); | |
171 | ||
172 | static int print_insn PARAMS ((CORE_ADDR, GDB_FILE *)); | |
173 | ||
174 | static void sym_info PARAMS ((char *, int)); | |
175 | ||
176 | \f | |
177 | /* Decode a format specification. *STRING_PTR should point to it. | |
178 | OFORMAT and OSIZE are used as defaults for the format and size | |
179 | if none are given in the format specification. | |
180 | If OSIZE is zero, then the size field of the returned value | |
181 | should be set only if a size is explicitly specified by the | |
182 | user. | |
183 | The structure returned describes all the data | |
184 | found in the specification. In addition, *STRING_PTR is advanced | |
185 | past the specification and past all whitespace following it. */ | |
186 | ||
187 | static struct format_data | |
188 | decode_format (string_ptr, oformat, osize) | |
189 | char **string_ptr; | |
190 | int oformat; | |
191 | int osize; | |
192 | { | |
193 | struct format_data val; | |
194 | register char *p = *string_ptr; | |
195 | ||
196 | val.format = '?'; | |
197 | val.size = '?'; | |
198 | val.count = 1; | |
199 | ||
200 | if (*p >= '0' && *p <= '9') | |
201 | val.count = atoi (p); | |
202 | while (*p >= '0' && *p <= '9') p++; | |
203 | ||
204 | /* Now process size or format letters that follow. */ | |
205 | ||
206 | while (1) | |
207 | { | |
208 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
209 | val.size = *p++; | |
210 | else if (*p >= 'a' && *p <= 'z') | |
211 | val.format = *p++; | |
212 | else | |
213 | break; | |
214 | } | |
215 | ||
216 | while (*p == ' ' || *p == '\t') p++; | |
217 | *string_ptr = p; | |
218 | ||
219 | /* Set defaults for format and size if not specified. */ | |
220 | if (val.format == '?') | |
221 | { | |
222 | if (val.size == '?') | |
223 | { | |
224 | /* Neither has been specified. */ | |
225 | val.format = oformat; | |
226 | val.size = osize; | |
227 | } | |
228 | else | |
229 | /* If a size is specified, any format makes a reasonable | |
230 | default except 'i'. */ | |
231 | val.format = oformat == 'i' ? 'x' : oformat; | |
232 | } | |
233 | else if (val.size == '?') | |
234 | switch (val.format) | |
235 | { | |
236 | case 'a': | |
237 | case 's': | |
238 | /* Pick the appropriate size for an address. */ | |
239 | if (TARGET_PTR_BIT == 64) | |
240 | val.size = osize ? 'g' : osize; | |
241 | else if (TARGET_PTR_BIT == 32) | |
242 | val.size = osize ? 'w' : osize; | |
243 | else if (TARGET_PTR_BIT == 16) | |
244 | val.size = osize ? 'h' : osize; | |
245 | else | |
246 | /* Bad value for TARGET_PTR_BIT */ | |
247 | abort (); | |
248 | break; | |
249 | case 'f': | |
250 | /* Floating point has to be word or giantword. */ | |
251 | if (osize == 'w' || osize == 'g') | |
252 | val.size = osize; | |
253 | else | |
254 | /* Default it to giantword if the last used size is not | |
255 | appropriate. */ | |
256 | val.size = osize ? 'g' : osize; | |
257 | break; | |
258 | case 'c': | |
259 | /* Characters default to one byte. */ | |
260 | val.size = osize ? 'b' : osize; | |
261 | break; | |
262 | default: | |
263 | /* The default is the size most recently specified. */ | |
264 | val.size = osize; | |
265 | } | |
266 | ||
267 | return val; | |
268 | } | |
269 | \f | |
270 | /* Print value VAL on gdb_stdout according to FORMAT, a letter or 0. | |
271 | Do not end with a newline. | |
272 | 0 means print VAL according to its own type. | |
273 | SIZE is the letter for the size of datum being printed. | |
274 | This is used to pad hex numbers so they line up. */ | |
275 | ||
276 | static void | |
277 | print_formatted (val, format, size) | |
278 | register value_ptr val; | |
279 | register int format; | |
280 | int size; | |
281 | { | |
282 | struct type *type = check_typedef (VALUE_TYPE (val)); | |
283 | int len = TYPE_LENGTH (type); | |
284 | ||
285 | if (VALUE_LVAL (val) == lval_memory) | |
286 | { | |
287 | next_address = VALUE_ADDRESS (val) + len; | |
288 | next_section = VALUE_BFD_SECTION (val); | |
289 | } | |
290 | ||
291 | switch (format) | |
292 | { | |
293 | case 's': | |
294 | /* FIXME: Need to handle wchar_t's here... */ | |
295 | next_address = VALUE_ADDRESS (val) | |
296 | + val_print_string (VALUE_ADDRESS (val), -1, 1, gdb_stdout); | |
297 | next_section = VALUE_BFD_SECTION (val); | |
298 | break; | |
299 | ||
300 | case 'i': | |
301 | /* The old comment says | |
302 | "Force output out, print_insn not using _filtered". | |
303 | I'm not completely sure what that means, I suspect most print_insn | |
304 | now do use _filtered, so I guess it's obsolete. | |
305 | --Yes, it does filter now, and so this is obsolete. -JB */ | |
306 | ||
307 | /* We often wrap here if there are long symbolic names. */ | |
308 | wrap_here (" "); | |
309 | next_address = VALUE_ADDRESS (val) | |
310 | + print_insn (VALUE_ADDRESS (val), gdb_stdout); | |
311 | next_section = VALUE_BFD_SECTION (val); | |
312 | break; | |
313 | ||
314 | default: | |
315 | if (format == 0 | |
316 | || TYPE_CODE (type) == TYPE_CODE_ARRAY | |
317 | || TYPE_CODE (type) == TYPE_CODE_STRING | |
318 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
319 | || TYPE_CODE (type) == TYPE_CODE_UNION) | |
320 | /* If format is 0, use the 'natural' format for | |
321 | * that type of value. If the type is non-scalar, | |
322 | * we have to use language rules to print it as | |
323 | * a series of scalars. | |
324 | */ | |
325 | value_print (val, gdb_stdout, format, Val_pretty_default); | |
326 | else | |
327 | /* User specified format, so don't look to the | |
328 | * the type to tell us what to do. | |
329 | */ | |
330 | print_scalar_formatted (VALUE_CONTENTS (val), type, | |
331 | format, size, gdb_stdout); | |
332 | } | |
333 | } | |
334 | ||
335 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, | |
336 | according to letters FORMAT and SIZE on STREAM. | |
337 | FORMAT may not be zero. Formats s and i are not supported at this level. | |
338 | ||
339 | This is how the elements of an array or structure are printed | |
340 | with a format. */ | |
341 | ||
342 | void | |
343 | print_scalar_formatted (valaddr, type, format, size, stream) | |
344 | char *valaddr; | |
345 | struct type *type; | |
346 | int format; | |
347 | int size; | |
348 | GDB_FILE *stream; | |
349 | { | |
350 | LONGEST val_long; | |
351 | unsigned int len = TYPE_LENGTH (type); | |
352 | ||
353 | if (len > sizeof (LONGEST) | |
354 | && (format == 't' | |
355 | || format == 'c' | |
356 | || format == 'o' | |
357 | || format == 'u' | |
358 | || format == 'd' | |
359 | || format == 'x')) | |
360 | { | |
361 | if (! TYPE_UNSIGNED (type) | |
362 | || ! extract_long_unsigned_integer (valaddr, len, &val_long)) | |
363 | { | |
364 | /* We can't print it normally, but we can print it in hex. | |
365 | Printing it in the wrong radix is more useful than saying | |
366 | "use /x, you dummy". */ | |
367 | /* FIXME: we could also do octal or binary if that was the | |
368 | desired format. */ | |
369 | /* FIXME: we should be using the size field to give us a | |
370 | minimum field width to print. */ | |
371 | ||
372 | if( format == 'o' ) | |
373 | print_octal_chars (stream, valaddr, len); | |
374 | else if( format == 'd' ) | |
375 | print_decimal_chars (stream, valaddr, len ); | |
376 | else if( format == 't' ) | |
377 | print_binary_chars (stream, valaddr, len); | |
378 | else | |
379 | ||
380 | /* replace with call to print_hex_chars? Looks | |
381 | like val_print_type_code_int is redoing | |
382 | work. - edie */ | |
383 | ||
384 | val_print_type_code_int (type, valaddr, stream); | |
385 | ||
386 | return; | |
387 | } | |
388 | ||
389 | /* If we get here, extract_long_unsigned_integer set val_long. */ | |
390 | } | |
391 | else if (format != 'f') | |
392 | val_long = unpack_long (type, valaddr); | |
393 | ||
394 | /* If we are printing it as unsigned, truncate it in case it is actually | |
395 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
396 | (if shorts are 16 bits) instead of 4294967295). */ | |
397 | if (format != 'd') | |
398 | { | |
399 | if (len < sizeof (LONGEST)) | |
400 | val_long &= ((LONGEST) 1 << HOST_CHAR_BIT * len) - 1; | |
401 | } | |
402 | ||
403 | switch (format) | |
404 | { | |
405 | case 'x': | |
406 | if (!size) | |
407 | { | |
408 | /* no size specified, like in print. Print varying # of digits. */ | |
409 | print_longest (stream, 'x', 1, val_long); | |
410 | } | |
411 | else | |
412 | switch (size) | |
413 | { | |
414 | case 'b': | |
415 | case 'h': | |
416 | case 'w': | |
417 | case 'g': | |
418 | print_longest (stream, size, 1, val_long); | |
419 | break; | |
420 | default: | |
421 | error ("Undefined output size \"%c\".", size); | |
422 | } | |
423 | break; | |
424 | ||
425 | case 'd': | |
426 | print_longest (stream, 'd', 1, val_long); | |
427 | break; | |
428 | ||
429 | case 'u': | |
430 | print_longest (stream, 'u', 0, val_long); | |
431 | break; | |
432 | ||
433 | case 'o': | |
434 | if (val_long) | |
435 | print_longest (stream, 'o', 1, val_long); | |
436 | else | |
437 | fprintf_filtered (stream, "0"); | |
438 | break; | |
439 | ||
440 | case 'a': | |
441 | print_address (unpack_pointer (type, valaddr), stream); | |
442 | break; | |
443 | ||
444 | case 'c': | |
445 | value_print (value_from_longest (builtin_type_char, val_long), stream, 0, | |
446 | Val_pretty_default); | |
447 | break; | |
448 | ||
449 | case 'f': | |
450 | if (len == sizeof (float)) | |
451 | type = builtin_type_float; | |
452 | else if (len == sizeof (double)) | |
453 | type = builtin_type_double; | |
454 | print_floating (valaddr, type, stream); | |
455 | break; | |
456 | ||
457 | case 0: | |
458 | abort (); | |
459 | ||
460 | case 't': | |
461 | /* Binary; 't' stands for "two". */ | |
462 | { | |
463 | char bits[8*(sizeof val_long) + 1]; | |
464 | char buf[8*(sizeof val_long) + 32]; | |
465 | char *cp = bits; | |
466 | int width; | |
467 | ||
468 | if (!size) | |
469 | width = 8*(sizeof val_long); | |
470 | else | |
471 | switch (size) | |
472 | { | |
473 | case 'b': | |
474 | width = 8; | |
475 | break; | |
476 | case 'h': | |
477 | width = 16; | |
478 | break; | |
479 | case 'w': | |
480 | width = 32; | |
481 | break; | |
482 | case 'g': | |
483 | width = 64; | |
484 | break; | |
485 | default: | |
486 | error ("Undefined output size \"%c\".", size); | |
487 | } | |
488 | ||
489 | bits[width] = '\0'; | |
490 | while (width-- > 0) | |
491 | { | |
492 | bits[width] = (val_long & 1) ? '1' : '0'; | |
493 | val_long >>= 1; | |
494 | } | |
495 | if (!size) | |
496 | { | |
497 | while (*cp && *cp == '0') | |
498 | cp++; | |
499 | if (*cp == '\0') | |
500 | cp--; | |
501 | } | |
502 | strcpy (buf, local_binary_format_prefix()); | |
503 | strcat (buf, cp); | |
504 | strcat (buf, local_binary_format_suffix()); | |
505 | fprintf_filtered (stream, buf); | |
506 | } | |
507 | break; | |
508 | ||
509 | default: | |
510 | error ("Undefined output format \"%c\".", format); | |
511 | } | |
512 | } | |
513 | ||
514 | /* Specify default address for `x' command. | |
515 | `info lines' uses this. */ | |
516 | ||
517 | void | |
518 | set_next_address (addr) | |
519 | CORE_ADDR addr; | |
520 | { | |
521 | next_address = addr; | |
522 | ||
523 | /* Make address available to the user as $_. */ | |
524 | set_internalvar (lookup_internalvar ("_"), | |
525 | value_from_longest (lookup_pointer_type (builtin_type_void), | |
526 | (LONGEST) addr)); | |
527 | } | |
528 | ||
529 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
530 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
531 | Optionally also print source file and line number, if available. | |
532 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
533 | or to interpret it as a possible C++ name and convert it back to source | |
534 | form. However note that DO_DEMANGLE can be overridden by the specific | |
535 | settings of the demangle and asm_demangle variables. */ | |
536 | ||
537 | void | |
538 | print_address_symbolic (addr, stream, do_demangle, leadin) | |
539 | CORE_ADDR addr; | |
540 | GDB_FILE *stream; | |
541 | int do_demangle; | |
542 | char *leadin; | |
543 | { | |
544 | struct minimal_symbol *msymbol; | |
545 | struct symbol *symbol; | |
546 | struct symtab *symtab = 0; | |
547 | CORE_ADDR name_location = 0; | |
548 | char *name = ""; | |
549 | asection *section = 0; | |
550 | int unmapped = 0; | |
551 | ||
552 | /* Determine if the address is in an overlay, and whether it is mapped. */ | |
553 | if (overlay_debugging) | |
554 | { | |
555 | section = find_pc_overlay (addr); | |
556 | if (pc_in_unmapped_range (addr, section)) | |
557 | { | |
558 | unmapped = 1; | |
559 | addr = overlay_mapped_address (addr, section); | |
560 | } | |
561 | } | |
562 | ||
563 | /* On some targets, add in extra "flag" bits to PC for | |
564 | disassembly. This should ensure that "rounding errors" in | |
565 | symbol addresses that are masked for disassembly favour the | |
566 | the correct symbol. */ | |
567 | ||
568 | #ifdef GDB_TARGET_UNMASK_DISAS_PC | |
569 | addr = GDB_TARGET_UNMASK_DISAS_PC (addr); | |
570 | #endif | |
571 | ||
572 | /* First try to find the address in the symbol table, then | |
573 | in the minsyms. Take the closest one. */ | |
574 | ||
575 | /* This is defective in the sense that it only finds text symbols. So | |
576 | really this is kind of pointless--we should make sure that the | |
577 | minimal symbols have everything we need (by changing that we could | |
578 | save some memory, but for many debug format--ELF/DWARF or | |
579 | anything/stabs--it would be inconvenient to eliminate those minimal | |
580 | symbols anyway). */ | |
581 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section); | |
582 | symbol = find_pc_sect_function (addr, section); | |
583 | ||
584 | if (symbol) | |
585 | { | |
586 | name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol)); | |
587 | if (do_demangle) | |
588 | name = SYMBOL_SOURCE_NAME (symbol); | |
589 | else | |
590 | name = SYMBOL_LINKAGE_NAME (symbol); | |
591 | } | |
592 | ||
593 | if (msymbol != NULL) | |
594 | { | |
595 | if (SYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL) | |
596 | { | |
597 | /* The msymbol is closer to the address than the symbol; | |
598 | use the msymbol instead. */ | |
599 | symbol = 0; | |
600 | symtab = 0; | |
601 | name_location = SYMBOL_VALUE_ADDRESS (msymbol); | |
602 | if (do_demangle) | |
603 | name = SYMBOL_SOURCE_NAME (msymbol); | |
604 | else | |
605 | name = SYMBOL_LINKAGE_NAME (msymbol); | |
606 | } | |
607 | } | |
608 | if (symbol == NULL && msymbol == NULL) | |
609 | return; | |
610 | ||
611 | /* On some targets, mask out extra "flag" bits from PC for handsome | |
612 | disassembly. */ | |
613 | ||
614 | #ifdef GDB_TARGET_MASK_DISAS_PC | |
615 | name_location = GDB_TARGET_MASK_DISAS_PC (name_location); | |
616 | addr = GDB_TARGET_MASK_DISAS_PC (addr); | |
617 | #endif | |
618 | ||
619 | /* If the nearest symbol is too far away, don't print anything symbolic. */ | |
620 | ||
621 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
622 | CORE_ADDR. But when we detect unsigned wraparound in the | |
623 | CORE_ADDR math, we ignore this test and print the offset, | |
624 | because addr+max_symbolic_offset has wrapped through the end | |
625 | of the address space back to the beginning, giving bogus comparison. */ | |
626 | if (addr > name_location + max_symbolic_offset | |
627 | && name_location + max_symbolic_offset > name_location) | |
628 | return; | |
629 | ||
630 | fputs_filtered (leadin, stream); | |
631 | if (unmapped) | |
632 | fputs_filtered ("<*", stream); | |
633 | else | |
634 | fputs_filtered ("<", stream); | |
635 | fputs_filtered (name, stream); | |
636 | if (addr != name_location) | |
637 | fprintf_filtered (stream, "+%u", (unsigned int)(addr - name_location)); | |
638 | ||
639 | /* Append source filename and line number if desired. Give specific | |
640 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
641 | if (print_symbol_filename) | |
642 | { | |
643 | struct symtab_and_line sal; | |
644 | ||
645 | sal = find_pc_sect_line (addr, section, 0); | |
646 | ||
647 | if (sal.symtab) | |
648 | fprintf_filtered (stream, " at %s:%d", sal.symtab->filename, sal.line); | |
649 | else if (symtab && symbol && symbol->line) | |
650 | fprintf_filtered (stream, " at %s:%d", symtab->filename, symbol->line); | |
651 | else if (symtab) | |
652 | fprintf_filtered (stream, " in %s", symtab->filename); | |
653 | } | |
654 | if (unmapped) | |
655 | fputs_filtered ("*>", stream); | |
656 | else | |
657 | fputs_filtered (">", stream); | |
658 | } | |
659 | ||
660 | ||
661 | /* Print address ADDR on STREAM. USE_LOCAL means the same thing as for | |
662 | print_longest. */ | |
663 | void | |
664 | print_address_numeric (addr, use_local, stream) | |
665 | CORE_ADDR addr; | |
666 | int use_local; | |
667 | GDB_FILE *stream; | |
668 | { | |
669 | /* This assumes a CORE_ADDR can fit in a LONGEST. Probably a safe | |
670 | assumption. */ | |
671 | print_longest (stream, 'x', use_local, (ULONGEST) addr); | |
672 | } | |
673 | ||
674 | /* Print address ADDR symbolically on STREAM. | |
675 | First print it as a number. Then perhaps print | |
676 | <SYMBOL + OFFSET> after the number. */ | |
677 | ||
678 | void | |
679 | print_address (addr, stream) | |
680 | CORE_ADDR addr; | |
681 | GDB_FILE *stream; | |
682 | { | |
683 | print_address_numeric (addr, 1, stream); | |
684 | print_address_symbolic (addr, stream, asm_demangle, " "); | |
685 | } | |
686 | ||
687 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE | |
688 | controls whether to print the symbolic name "raw" or demangled. | |
689 | Global setting "addressprint" controls whether to print hex address | |
690 | or not. */ | |
691 | ||
692 | void | |
693 | print_address_demangle (addr, stream, do_demangle) | |
694 | CORE_ADDR addr; | |
695 | GDB_FILE *stream; | |
696 | int do_demangle; | |
697 | { | |
698 | if (addr == 0) | |
699 | { | |
700 | fprintf_filtered (stream, "0"); | |
701 | } | |
702 | else if (addressprint) | |
703 | { | |
704 | print_address_numeric (addr, 1, stream); | |
705 | print_address_symbolic (addr, stream, do_demangle, " "); | |
706 | } | |
707 | else | |
708 | { | |
709 | print_address_symbolic (addr, stream, do_demangle, ""); | |
710 | } | |
711 | } | |
712 | \f | |
713 | ||
714 | /* These are the types that $__ will get after an examine command of one | |
715 | of these sizes. */ | |
716 | ||
717 | static struct type *examine_i_type; | |
718 | ||
719 | static struct type *examine_b_type; | |
720 | static struct type *examine_h_type; | |
721 | static struct type *examine_w_type; | |
722 | static struct type *examine_g_type; | |
723 | ||
724 | /* Examine data at address ADDR in format FMT. | |
725 | Fetch it from memory and print on gdb_stdout. */ | |
726 | ||
727 | static void | |
728 | do_examine (fmt, addr, sect) | |
729 | struct format_data fmt; | |
730 | CORE_ADDR addr; | |
731 | asection *sect; | |
732 | { | |
733 | register char format = 0; | |
734 | register char size; | |
735 | register int count = 1; | |
736 | struct type *val_type = NULL; | |
737 | register int i; | |
738 | register int maxelts; | |
739 | ||
740 | format = fmt.format; | |
741 | size = fmt.size; | |
742 | count = fmt.count; | |
743 | next_address = addr; | |
744 | next_section = sect; | |
745 | ||
746 | /* String or instruction format implies fetch single bytes | |
747 | regardless of the specified size. */ | |
748 | if (format == 's' || format == 'i') | |
749 | size = 'b'; | |
750 | ||
751 | if (format == 'i') | |
752 | val_type = examine_i_type; | |
753 | else if (size == 'b') | |
754 | val_type = examine_b_type; | |
755 | else if (size == 'h') | |
756 | val_type = examine_h_type; | |
757 | else if (size == 'w') | |
758 | val_type = examine_w_type; | |
759 | else if (size == 'g') | |
760 | val_type = examine_g_type; | |
761 | ||
762 | maxelts = 8; | |
763 | if (size == 'w') | |
764 | maxelts = 4; | |
765 | if (size == 'g') | |
766 | maxelts = 2; | |
767 | if (format == 's' || format == 'i') | |
768 | maxelts = 1; | |
769 | ||
770 | /* Print as many objects as specified in COUNT, at most maxelts per line, | |
771 | with the address of the next one at the start of each line. */ | |
772 | ||
773 | while (count > 0) | |
774 | { | |
775 | QUIT; | |
776 | print_address (next_address, gdb_stdout); | |
777 | printf_filtered (":"); | |
778 | for (i = maxelts; | |
779 | i > 0 && count > 0; | |
780 | i--, count--) | |
781 | { | |
782 | printf_filtered ("\t"); | |
783 | /* Note that print_formatted sets next_address for the next | |
784 | object. */ | |
785 | last_examine_address = next_address; | |
786 | ||
787 | if (last_examine_value) | |
788 | value_free (last_examine_value); | |
789 | ||
790 | /* The value to be displayed is not fetched greedily. | |
791 | Instead, to avoid the posibility of a fetched value not | |
792 | being used, its retreval is delayed until the print code | |
793 | uses it. When examining an instruction stream, the | |
794 | disassembler will perform its own memory fetch using just | |
795 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
796 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
797 | is left with the byte sequence from the last complete | |
798 | instruction fetched from memory? */ | |
799 | last_examine_value = value_at_lazy (val_type, next_address, sect); | |
800 | ||
801 | if (last_examine_value) | |
802 | release_value (last_examine_value); | |
803 | ||
804 | print_formatted (last_examine_value, format, size); | |
805 | } | |
806 | printf_filtered ("\n"); | |
807 | gdb_flush (gdb_stdout); | |
808 | } | |
809 | } | |
810 | \f | |
811 | static void | |
812 | validate_format (fmt, cmdname) | |
813 | struct format_data fmt; | |
814 | char *cmdname; | |
815 | { | |
816 | if (fmt.size != 0) | |
817 | error ("Size letters are meaningless in \"%s\" command.", cmdname); | |
818 | if (fmt.count != 1) | |
819 | error ("Item count other than 1 is meaningless in \"%s\" command.", | |
820 | cmdname); | |
821 | if (fmt.format == 'i' || fmt.format == 's') | |
822 | error ("Format letter \"%c\" is meaningless in \"%s\" command.", | |
823 | fmt.format, cmdname); | |
824 | } | |
825 | ||
826 | /* Evaluate string EXP as an expression in the current language and | |
827 | print the resulting value. EXP may contain a format specifier as the | |
828 | first argument ("/x myvar" for example, to print myvar in hex). | |
829 | */ | |
830 | ||
831 | static void | |
832 | print_command_1 (exp, inspect, voidprint) | |
833 | char *exp; | |
834 | int inspect; | |
835 | int voidprint; | |
836 | { | |
837 | struct expression *expr; | |
838 | register struct cleanup *old_chain = 0; | |
839 | register char format = 0; | |
840 | register value_ptr val; | |
841 | struct format_data fmt; | |
842 | int cleanup = 0; | |
843 | ||
844 | /* Pass inspect flag to the rest of the print routines in a global (sigh). */ | |
845 | inspect_it = inspect; | |
846 | ||
847 | if (exp && *exp == '/') | |
848 | { | |
849 | exp++; | |
850 | fmt = decode_format (&exp, last_format, 0); | |
851 | validate_format (fmt, "print"); | |
852 | last_format = format = fmt.format; | |
853 | } | |
854 | else | |
855 | { | |
856 | fmt.count = 1; | |
857 | fmt.format = 0; | |
858 | fmt.size = 0; | |
859 | } | |
860 | ||
861 | if (exp && *exp) | |
862 | { | |
c906108c SS |
863 | struct type *type; |
864 | expr = parse_expression (exp); | |
865 | old_chain = make_cleanup ((make_cleanup_func) free_current_contents, | |
866 | &expr); | |
867 | cleanup = 1; | |
868 | val = evaluate_expression (expr); | |
869 | ||
870 | /* C++: figure out what type we actually want to print it as. */ | |
871 | type = VALUE_TYPE (val); | |
872 | ||
873 | if (objectprint | |
874 | && ( TYPE_CODE (type) == TYPE_CODE_PTR | |
875 | || TYPE_CODE (type) == TYPE_CODE_REF) | |
876 | && ( TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRUCT | |
877 | || TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_UNION)) | |
878 | { | |
879 | value_ptr v; | |
880 | ||
881 | v = value_from_vtable_info (val, TYPE_TARGET_TYPE (type)); | |
882 | if (v != 0) | |
883 | { | |
884 | val = v; | |
885 | type = VALUE_TYPE (val); | |
886 | } | |
887 | } | |
888 | } | |
889 | else | |
890 | val = access_value_history (0); | |
891 | ||
892 | if (voidprint || (val && VALUE_TYPE (val) && | |
893 | TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_VOID)) | |
894 | { | |
895 | int histindex = record_latest_value (val); | |
896 | ||
897 | if (histindex >= 0) | |
898 | annotate_value_history_begin (histindex, VALUE_TYPE (val)); | |
899 | else | |
900 | annotate_value_begin (VALUE_TYPE (val)); | |
901 | ||
902 | if (inspect) | |
903 | printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"", exp, histindex); | |
904 | else | |
905 | if (histindex >= 0) printf_filtered ("$%d = ", histindex); | |
906 | ||
907 | if (histindex >= 0) | |
908 | annotate_value_history_value (); | |
909 | ||
910 | print_formatted (val, format, fmt.size); | |
911 | printf_filtered ("\n"); | |
912 | ||
913 | if (histindex >= 0) | |
914 | annotate_value_history_end (); | |
915 | else | |
916 | annotate_value_end (); | |
917 | ||
918 | if (inspect) | |
919 | printf_unfiltered("\") )\030"); | |
920 | } | |
921 | ||
922 | if (cleanup) | |
923 | do_cleanups (old_chain); | |
924 | inspect_it = 0; /* Reset print routines to normal */ | |
925 | } | |
926 | ||
927 | /* ARGSUSED */ | |
928 | static void | |
929 | print_command (exp, from_tty) | |
930 | char *exp; | |
931 | int from_tty; | |
932 | { | |
933 | print_command_1 (exp, 0, 1); | |
934 | } | |
935 | ||
936 | /* Same as print, except in epoch, it gets its own window */ | |
937 | /* ARGSUSED */ | |
938 | static void | |
939 | inspect_command (exp, from_tty) | |
940 | char *exp; | |
941 | int from_tty; | |
942 | { | |
943 | extern int epoch_interface; | |
944 | ||
945 | print_command_1 (exp, epoch_interface, 1); | |
946 | } | |
947 | ||
948 | /* Same as print, except it doesn't print void results. */ | |
949 | /* ARGSUSED */ | |
950 | static void | |
951 | call_command (exp, from_tty) | |
952 | char *exp; | |
953 | int from_tty; | |
954 | { | |
955 | print_command_1 (exp, 0, 0); | |
956 | } | |
957 | ||
958 | /* ARGSUSED */ | |
959 | void | |
960 | output_command (exp, from_tty) | |
961 | char *exp; | |
962 | int from_tty; | |
963 | { | |
964 | struct expression *expr; | |
965 | register struct cleanup *old_chain; | |
966 | register char format = 0; | |
967 | register value_ptr val; | |
968 | struct format_data fmt; | |
969 | ||
970 | if (exp && *exp == '/') | |
971 | { | |
972 | exp++; | |
973 | fmt = decode_format (&exp, 0, 0); | |
974 | validate_format (fmt, "output"); | |
975 | format = fmt.format; | |
976 | } | |
977 | ||
978 | expr = parse_expression (exp); | |
979 | old_chain = make_cleanup ((make_cleanup_func) free_current_contents, &expr); | |
980 | ||
981 | val = evaluate_expression (expr); | |
982 | ||
983 | annotate_value_begin (VALUE_TYPE (val)); | |
984 | ||
985 | print_formatted (val, format, fmt.size); | |
986 | ||
987 | annotate_value_end (); | |
988 | ||
989 | do_cleanups (old_chain); | |
990 | } | |
991 | ||
992 | /* ARGSUSED */ | |
993 | static void | |
994 | set_command (exp, from_tty) | |
995 | char *exp; | |
996 | int from_tty; | |
997 | { | |
998 | struct expression *expr = parse_expression (exp); | |
999 | register struct cleanup *old_chain | |
1000 | = make_cleanup ((make_cleanup_func) free_current_contents, &expr); | |
1001 | evaluate_expression (expr); | |
1002 | do_cleanups (old_chain); | |
1003 | } | |
1004 | ||
1005 | /* ARGSUSED */ | |
1006 | static void | |
1007 | sym_info (arg, from_tty) | |
1008 | char *arg; | |
1009 | int from_tty; | |
1010 | { | |
1011 | struct minimal_symbol *msymbol; | |
1012 | struct objfile *objfile; | |
1013 | struct obj_section *osect; | |
1014 | asection *sect; | |
1015 | CORE_ADDR addr, sect_addr; | |
1016 | int matches = 0; | |
1017 | unsigned int offset; | |
1018 | ||
1019 | if (!arg) | |
1020 | error_no_arg ("address"); | |
1021 | ||
1022 | addr = parse_and_eval_address (arg); | |
1023 | ALL_OBJSECTIONS (objfile, osect) | |
1024 | { | |
1025 | sect = osect->the_bfd_section; | |
1026 | sect_addr = overlay_mapped_address (addr, sect); | |
1027 | ||
1028 | if (osect->addr <= sect_addr && sect_addr < osect->endaddr && | |
1029 | (msymbol = lookup_minimal_symbol_by_pc_section (sect_addr, sect))) | |
1030 | { | |
1031 | matches = 1; | |
1032 | offset = sect_addr - SYMBOL_VALUE_ADDRESS (msymbol); | |
1033 | if (offset) | |
1034 | printf_filtered ("%s + %u in ", | |
1035 | SYMBOL_SOURCE_NAME (msymbol), offset); | |
1036 | else | |
1037 | printf_filtered ("%s in ", | |
1038 | SYMBOL_SOURCE_NAME (msymbol)); | |
1039 | if (pc_in_unmapped_range (addr, sect)) | |
1040 | printf_filtered ("load address range of "); | |
1041 | if (section_is_overlay (sect)) | |
1042 | printf_filtered ("%s overlay ", | |
1043 | section_is_mapped (sect) ? "mapped" : "unmapped"); | |
1044 | printf_filtered ("section %s", sect->name); | |
1045 | printf_filtered ("\n"); | |
1046 | } | |
1047 | } | |
1048 | if (matches == 0) | |
1049 | printf_filtered ("No symbol matches %s.\n", arg); | |
1050 | } | |
1051 | ||
1052 | /* ARGSUSED */ | |
1053 | static void | |
1054 | address_info (exp, from_tty) | |
1055 | char *exp; | |
1056 | int from_tty; | |
1057 | { | |
1058 | register struct symbol *sym; | |
1059 | register struct minimal_symbol *msymbol; | |
1060 | register long val; | |
1061 | register long basereg; | |
1062 | asection *section; | |
1063 | CORE_ADDR load_addr; | |
1064 | int is_a_field_of_this; /* C++: lookup_symbol sets this to nonzero | |
1065 | if exp is a field of `this'. */ | |
1066 | ||
1067 | if (exp == 0) | |
1068 | error ("Argument required."); | |
1069 | ||
1070 | sym = lookup_symbol (exp, get_selected_block (), VAR_NAMESPACE, | |
1071 | &is_a_field_of_this, (struct symtab **)NULL); | |
1072 | if (sym == NULL) | |
1073 | { | |
1074 | if (is_a_field_of_this) | |
1075 | { | |
1076 | printf_filtered ("Symbol \""); | |
1077 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1078 | current_language->la_language, DMGL_ANSI); | |
1079 | printf_filtered ("\" is a field of the local class variable `this'\n"); | |
1080 | return; | |
1081 | } | |
1082 | ||
1083 | msymbol = lookup_minimal_symbol (exp, NULL, NULL); | |
1084 | ||
1085 | if (msymbol != NULL) | |
1086 | { | |
1087 | load_addr = SYMBOL_VALUE_ADDRESS (msymbol); | |
1088 | ||
1089 | printf_filtered ("Symbol \""); | |
1090 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1091 | current_language->la_language, DMGL_ANSI); | |
1092 | printf_filtered ("\" is at "); | |
1093 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1094 | printf_filtered (" in a file compiled without debugging"); | |
1095 | section = SYMBOL_BFD_SECTION (msymbol); | |
1096 | if (section_is_overlay (section)) | |
1097 | { | |
1098 | load_addr = overlay_unmapped_address (load_addr, section); | |
1099 | printf_filtered (",\n -- loaded at "); | |
1100 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1101 | printf_filtered (" in overlay section %s", section->name); | |
1102 | } | |
1103 | printf_filtered (".\n"); | |
1104 | } | |
1105 | else | |
1106 | error ("No symbol \"%s\" in current context.", exp); | |
1107 | return; | |
1108 | } | |
1109 | ||
1110 | printf_filtered ("Symbol \""); | |
1111 | fprintf_symbol_filtered (gdb_stdout, SYMBOL_NAME (sym), | |
1112 | current_language->la_language, DMGL_ANSI); | |
1113 | printf_filtered ("\" is "); | |
1114 | val = SYMBOL_VALUE (sym); | |
1115 | basereg = SYMBOL_BASEREG (sym); | |
1116 | section = SYMBOL_BFD_SECTION (sym); | |
1117 | ||
1118 | switch (SYMBOL_CLASS (sym)) | |
1119 | { | |
1120 | case LOC_CONST: | |
1121 | case LOC_CONST_BYTES: | |
1122 | printf_filtered ("constant"); | |
1123 | break; | |
1124 | ||
1125 | case LOC_LABEL: | |
1126 | printf_filtered ("a label at address "); | |
1127 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym), | |
1128 | 1, gdb_stdout); | |
1129 | if (section_is_overlay (section)) | |
1130 | { | |
1131 | load_addr = overlay_unmapped_address (load_addr, section); | |
1132 | printf_filtered (",\n -- loaded at "); | |
1133 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1134 | printf_filtered (" in overlay section %s", section->name); | |
1135 | } | |
1136 | break; | |
1137 | ||
1138 | case LOC_REGISTER: | |
1139 | printf_filtered ("a variable in register %s", REGISTER_NAME (val)); | |
1140 | break; | |
1141 | ||
1142 | case LOC_STATIC: | |
1143 | printf_filtered ("static storage at address "); | |
1144 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym), | |
1145 | 1, gdb_stdout); | |
1146 | if (section_is_overlay (section)) | |
1147 | { | |
1148 | load_addr = overlay_unmapped_address (load_addr, section); | |
1149 | printf_filtered (",\n -- loaded at "); | |
1150 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1151 | printf_filtered (" in overlay section %s", section->name); | |
1152 | } | |
1153 | break; | |
1154 | ||
1155 | case LOC_INDIRECT: | |
1156 | printf_filtered ("external global (indirect addressing), at address *("); | |
1157 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym), | |
1158 | 1, gdb_stdout); | |
1159 | printf_filtered (")"); | |
1160 | if (section_is_overlay (section)) | |
1161 | { | |
1162 | load_addr = overlay_unmapped_address (load_addr, section); | |
1163 | printf_filtered (",\n -- loaded at "); | |
1164 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1165 | printf_filtered (" in overlay section %s", section->name); | |
1166 | } | |
1167 | break; | |
1168 | ||
1169 | case LOC_REGPARM: | |
1170 | printf_filtered ("an argument in register %s", REGISTER_NAME (val)); | |
1171 | break; | |
1172 | ||
1173 | case LOC_REGPARM_ADDR: | |
1174 | printf_filtered ("address of an argument in register %s", REGISTER_NAME (val)); | |
1175 | break; | |
1176 | ||
1177 | case LOC_ARG: | |
1178 | printf_filtered ("an argument at offset %ld", val); | |
1179 | break; | |
1180 | ||
1181 | case LOC_LOCAL_ARG: | |
1182 | printf_filtered ("an argument at frame offset %ld", val); | |
1183 | break; | |
1184 | ||
1185 | case LOC_LOCAL: | |
1186 | printf_filtered ("a local variable at frame offset %ld", val); | |
1187 | break; | |
1188 | ||
1189 | case LOC_REF_ARG: | |
1190 | printf_filtered ("a reference argument at offset %ld", val); | |
1191 | break; | |
1192 | ||
1193 | case LOC_BASEREG: | |
1194 | printf_filtered ("a variable at offset %ld from register %s", | |
1195 | val, REGISTER_NAME (basereg)); | |
1196 | break; | |
1197 | ||
1198 | case LOC_BASEREG_ARG: | |
1199 | printf_filtered ("an argument at offset %ld from register %s", | |
1200 | val, REGISTER_NAME (basereg)); | |
1201 | break; | |
1202 | ||
1203 | case LOC_TYPEDEF: | |
1204 | printf_filtered ("a typedef"); | |
1205 | break; | |
1206 | ||
1207 | case LOC_BLOCK: | |
1208 | printf_filtered ("a function at address "); | |
1209 | #ifdef GDB_TARGET_MASK_DISAS_PC | |
1210 | print_address_numeric | |
1211 | (load_addr= GDB_TARGET_MASK_DISAS_PC (BLOCK_START (SYMBOL_BLOCK_VALUE (sym))), | |
1212 | 1, gdb_stdout); | |
1213 | #else | |
1214 | print_address_numeric (load_addr=BLOCK_START (SYMBOL_BLOCK_VALUE (sym)), | |
1215 | 1, gdb_stdout); | |
1216 | #endif | |
1217 | if (section_is_overlay (section)) | |
1218 | { | |
1219 | load_addr = overlay_unmapped_address (load_addr, section); | |
1220 | printf_filtered (",\n -- loaded at "); | |
1221 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1222 | printf_filtered (" in overlay section %s", section->name); | |
1223 | } | |
1224 | break; | |
1225 | ||
1226 | case LOC_UNRESOLVED: | |
1227 | { | |
1228 | struct minimal_symbol *msym; | |
1229 | ||
1230 | msym = lookup_minimal_symbol (SYMBOL_NAME (sym), NULL, NULL); | |
1231 | if (msym == NULL) | |
1232 | printf_filtered ("unresolved"); | |
1233 | else | |
1234 | { | |
1235 | section = SYMBOL_BFD_SECTION (msym); | |
1236 | printf_filtered ("static storage at address "); | |
1237 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (msym), | |
1238 | 1, gdb_stdout); | |
1239 | if (section_is_overlay (section)) | |
1240 | { | |
1241 | load_addr = overlay_unmapped_address (load_addr, section); | |
1242 | printf_filtered (",\n -- loaded at "); | |
1243 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1244 | printf_filtered (" in overlay section %s", section->name); | |
1245 | } | |
1246 | } | |
1247 | } | |
1248 | break; | |
1249 | ||
1250 | case LOC_THREAD_LOCAL_STATIC: | |
1251 | printf_filtered ( | |
1252 | "a thread-local variable at offset %ld from the thread base register %s", | |
1253 | val, REGISTER_NAME (basereg)); | |
1254 | break; | |
1255 | ||
1256 | case LOC_OPTIMIZED_OUT: | |
1257 | printf_filtered ("optimized out"); | |
1258 | break; | |
1259 | ||
1260 | default: | |
1261 | printf_filtered ("of unknown (botched) type"); | |
1262 | break; | |
1263 | } | |
1264 | printf_filtered (".\n"); | |
1265 | } | |
1266 | \f | |
1267 | void | |
1268 | x_command (exp, from_tty) | |
1269 | char *exp; | |
1270 | int from_tty; | |
1271 | { | |
1272 | struct expression *expr; | |
1273 | struct format_data fmt; | |
1274 | struct cleanup *old_chain; | |
1275 | struct value *val; | |
1276 | ||
1277 | fmt.format = last_format; | |
1278 | fmt.size = last_size; | |
1279 | fmt.count = 1; | |
1280 | ||
1281 | if (exp && *exp == '/') | |
1282 | { | |
1283 | exp++; | |
1284 | fmt = decode_format (&exp, last_format, last_size); | |
1285 | } | |
1286 | ||
1287 | /* If we have an expression, evaluate it and use it as the address. */ | |
1288 | ||
1289 | if (exp != 0 && *exp != 0) | |
1290 | { | |
1291 | expr = parse_expression (exp); | |
1292 | /* Cause expression not to be there any more | |
1293 | if this command is repeated with Newline. | |
1294 | But don't clobber a user-defined command's definition. */ | |
1295 | if (from_tty) | |
1296 | *exp = 0; | |
1297 | old_chain = make_cleanup ((make_cleanup_func) free_current_contents, | |
1298 | &expr); | |
1299 | val = evaluate_expression (expr); | |
1300 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_REF) | |
1301 | val = value_ind (val); | |
1302 | /* In rvalue contexts, such as this, functions are coerced into | |
1303 | pointers to functions. This makes "x/i main" work. */ | |
1304 | if (/* last_format == 'i' | |
1305 | && */ TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_FUNC | |
1306 | && VALUE_LVAL (val) == lval_memory) | |
1307 | next_address = VALUE_ADDRESS (val); | |
1308 | else | |
1309 | next_address = value_as_pointer (val); | |
1310 | if (VALUE_BFD_SECTION (val)) | |
1311 | next_section = VALUE_BFD_SECTION (val); | |
1312 | do_cleanups (old_chain); | |
1313 | } | |
1314 | ||
1315 | do_examine (fmt, next_address, next_section); | |
1316 | ||
1317 | /* If the examine succeeds, we remember its size and format for next time. */ | |
1318 | last_size = fmt.size; | |
1319 | last_format = fmt.format; | |
1320 | ||
1321 | /* Set a couple of internal variables if appropriate. */ | |
1322 | if (last_examine_value) | |
1323 | { | |
1324 | /* Make last address examined available to the user as $_. Use | |
1325 | the correct pointer type. */ | |
1326 | set_internalvar (lookup_internalvar ("_"), | |
1327 | value_from_longest ( | |
1328 | lookup_pointer_type (VALUE_TYPE (last_examine_value)), | |
1329 | (LONGEST) last_examine_address)); | |
1330 | ||
1331 | /* Make contents of last address examined available to the user as $__.*/ | |
1332 | /* If the last value has not been fetched from memory then don't | |
1333 | fetch it now - instead mark it by voiding the $__ variable. */ | |
1334 | if (VALUE_LAZY (last_examine_value)) | |
1335 | set_internalvar (lookup_internalvar ("__"), | |
1336 | allocate_value (builtin_type_void)); | |
1337 | else | |
1338 | set_internalvar (lookup_internalvar ("__"), last_examine_value); | |
1339 | } | |
1340 | } | |
1341 | ||
1342 | \f | |
1343 | /* Add an expression to the auto-display chain. | |
1344 | Specify the expression. */ | |
1345 | ||
1346 | static void | |
1347 | display_command (exp, from_tty) | |
1348 | char *exp; | |
1349 | int from_tty; | |
1350 | { | |
1351 | struct format_data fmt; | |
1352 | register struct expression *expr; | |
1353 | register struct display *new; | |
1354 | int display_it = 1; | |
1355 | ||
1356 | #if defined(TUI) | |
1357 | if (tui_version && *exp == '$') | |
1358 | display_it = ((TuiStatus)tuiDo( | |
1359 | (TuiOpaqueFuncPtr)tui_vSetLayoutTo, exp) == TUI_FAILURE); | |
1360 | #endif | |
1361 | ||
1362 | if (display_it) | |
1363 | { | |
1364 | if (exp == 0) | |
1365 | { | |
1366 | do_displays (); | |
1367 | return; | |
1368 | } | |
1369 | ||
1370 | if (*exp == '/') | |
1371 | { | |
1372 | exp++; | |
1373 | fmt = decode_format (&exp, 0, 0); | |
1374 | if (fmt.size && fmt.format == 0) | |
1375 | fmt.format = 'x'; | |
1376 | if (fmt.format == 'i' || fmt.format == 's') | |
1377 | fmt.size = 'b'; | |
1378 | } | |
1379 | else | |
1380 | { | |
1381 | fmt.format = 0; | |
1382 | fmt.size = 0; | |
1383 | fmt.count = 0; | |
1384 | } | |
1385 | ||
1386 | innermost_block = 0; | |
1387 | expr = parse_expression (exp); | |
1388 | ||
1389 | new = (struct display *) xmalloc (sizeof (struct display)); | |
1390 | ||
1391 | new->exp = expr; | |
1392 | new->block = innermost_block; | |
1393 | new->next = display_chain; | |
1394 | new->number = ++display_number; | |
1395 | new->format = fmt; | |
1396 | new->status = enabled; | |
1397 | display_chain = new; | |
1398 | ||
1399 | if (from_tty && target_has_execution) | |
1400 | do_one_display (new); | |
1401 | ||
1402 | dont_repeat (); | |
1403 | } | |
1404 | } | |
1405 | ||
1406 | static void | |
1407 | free_display (d) | |
1408 | struct display *d; | |
1409 | { | |
1410 | free ((PTR)d->exp); | |
1411 | free ((PTR)d); | |
1412 | } | |
1413 | ||
1414 | /* Clear out the display_chain. | |
1415 | Done when new symtabs are loaded, since this invalidates | |
1416 | the types stored in many expressions. */ | |
1417 | ||
1418 | void | |
1419 | clear_displays () | |
1420 | { | |
1421 | register struct display *d; | |
1422 | ||
1423 | while ((d = display_chain) != NULL) | |
1424 | { | |
1425 | free ((PTR)d->exp); | |
1426 | display_chain = d->next; | |
1427 | free ((PTR)d); | |
1428 | } | |
1429 | } | |
1430 | ||
1431 | /* Delete the auto-display number NUM. */ | |
1432 | ||
1433 | static void | |
1434 | delete_display (num) | |
1435 | int num; | |
1436 | { | |
1437 | register struct display *d1, *d; | |
1438 | ||
1439 | if (!display_chain) | |
1440 | error ("No display number %d.", num); | |
1441 | ||
1442 | if (display_chain->number == num) | |
1443 | { | |
1444 | d1 = display_chain; | |
1445 | display_chain = d1->next; | |
1446 | free_display (d1); | |
1447 | } | |
1448 | else | |
1449 | for (d = display_chain; ; d = d->next) | |
1450 | { | |
1451 | if (d->next == 0) | |
1452 | error ("No display number %d.", num); | |
1453 | if (d->next->number == num) | |
1454 | { | |
1455 | d1 = d->next; | |
1456 | d->next = d1->next; | |
1457 | free_display (d1); | |
1458 | break; | |
1459 | } | |
1460 | } | |
1461 | } | |
1462 | ||
1463 | /* Delete some values from the auto-display chain. | |
1464 | Specify the element numbers. */ | |
1465 | ||
1466 | static void | |
1467 | undisplay_command (args, from_tty) | |
1468 | char *args; | |
1469 | int from_tty; | |
1470 | { | |
1471 | register char *p = args; | |
1472 | register char *p1; | |
1473 | register int num; | |
1474 | ||
1475 | if (args == 0) | |
1476 | { | |
1477 | if (query ("Delete all auto-display expressions? ")) | |
1478 | clear_displays (); | |
1479 | dont_repeat (); | |
1480 | return; | |
1481 | } | |
1482 | ||
1483 | while (*p) | |
1484 | { | |
1485 | p1 = p; | |
1486 | while (*p1 >= '0' && *p1 <= '9') p1++; | |
1487 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
1488 | error ("Arguments must be display numbers."); | |
1489 | ||
1490 | num = atoi (p); | |
1491 | ||
1492 | delete_display (num); | |
1493 | ||
1494 | p = p1; | |
1495 | while (*p == ' ' || *p == '\t') p++; | |
1496 | } | |
1497 | dont_repeat (); | |
1498 | } | |
1499 | ||
1500 | /* Display a single auto-display. | |
1501 | Do nothing if the display cannot be printed in the current context, | |
1502 | or if the display is disabled. */ | |
1503 | ||
1504 | static void | |
1505 | do_one_display (d) | |
1506 | struct display *d; | |
1507 | { | |
1508 | int within_current_scope; | |
1509 | ||
1510 | if (d->status == disabled) | |
1511 | return; | |
1512 | ||
1513 | if (d->block) | |
1514 | within_current_scope = contained_in (get_selected_block (), d->block); | |
1515 | else | |
1516 | within_current_scope = 1; | |
1517 | if (!within_current_scope) | |
1518 | return; | |
1519 | ||
1520 | current_display_number = d->number; | |
1521 | ||
1522 | annotate_display_begin (); | |
1523 | printf_filtered ("%d", d->number); | |
1524 | annotate_display_number_end (); | |
1525 | printf_filtered (": "); | |
1526 | if (d->format.size) | |
1527 | { | |
1528 | CORE_ADDR addr; | |
1529 | value_ptr val; | |
1530 | ||
1531 | annotate_display_format (); | |
1532 | ||
1533 | printf_filtered ("x/"); | |
1534 | if (d->format.count != 1) | |
1535 | printf_filtered ("%d", d->format.count); | |
1536 | printf_filtered ("%c", d->format.format); | |
1537 | if (d->format.format != 'i' && d->format.format != 's') | |
1538 | printf_filtered ("%c", d->format.size); | |
1539 | printf_filtered (" "); | |
1540 | ||
1541 | annotate_display_expression (); | |
1542 | ||
1543 | print_expression (d->exp, gdb_stdout); | |
1544 | annotate_display_expression_end (); | |
1545 | ||
1546 | if (d->format.count != 1) | |
1547 | printf_filtered ("\n"); | |
1548 | else | |
1549 | printf_filtered (" "); | |
1550 | ||
1551 | val = evaluate_expression (d->exp); | |
1552 | addr = value_as_pointer (val); | |
1553 | if (d->format.format == 'i') | |
1554 | addr = ADDR_BITS_REMOVE (addr); | |
1555 | ||
1556 | annotate_display_value (); | |
1557 | ||
1558 | do_examine (d->format, addr, VALUE_BFD_SECTION (val)); | |
1559 | } | |
1560 | else | |
1561 | { | |
1562 | annotate_display_format (); | |
1563 | ||
1564 | if (d->format.format) | |
1565 | printf_filtered ("/%c ", d->format.format); | |
1566 | ||
1567 | annotate_display_expression (); | |
1568 | ||
1569 | print_expression (d->exp, gdb_stdout); | |
1570 | annotate_display_expression_end (); | |
1571 | ||
1572 | printf_filtered (" = "); | |
1573 | ||
1574 | annotate_display_expression (); | |
1575 | ||
1576 | print_formatted (evaluate_expression (d->exp), | |
1577 | d->format.format, d->format.size); | |
1578 | printf_filtered ("\n"); | |
1579 | } | |
1580 | ||
1581 | annotate_display_end (); | |
1582 | ||
1583 | gdb_flush (gdb_stdout); | |
1584 | current_display_number = -1; | |
1585 | } | |
1586 | ||
1587 | /* Display all of the values on the auto-display chain which can be | |
1588 | evaluated in the current scope. */ | |
1589 | ||
1590 | void | |
1591 | do_displays () | |
1592 | { | |
1593 | register struct display *d; | |
1594 | ||
1595 | for (d = display_chain; d; d = d->next) | |
1596 | do_one_display (d); | |
1597 | } | |
1598 | ||
1599 | /* Delete the auto-display which we were in the process of displaying. | |
1600 | This is done when there is an error or a signal. */ | |
1601 | ||
1602 | void | |
1603 | disable_display (num) | |
1604 | int num; | |
1605 | { | |
1606 | register struct display *d; | |
1607 | ||
1608 | for (d = display_chain; d; d = d->next) | |
1609 | if (d->number == num) | |
1610 | { | |
1611 | d->status = disabled; | |
1612 | return; | |
1613 | } | |
1614 | printf_unfiltered ("No display number %d.\n", num); | |
1615 | } | |
1616 | ||
1617 | void | |
1618 | disable_current_display () | |
1619 | { | |
1620 | if (current_display_number >= 0) | |
1621 | { | |
1622 | disable_display (current_display_number); | |
1623 | fprintf_unfiltered (gdb_stderr, "Disabling display %d to avoid infinite recursion.\n", | |
1624 | current_display_number); | |
1625 | } | |
1626 | current_display_number = -1; | |
1627 | } | |
1628 | ||
1629 | static void | |
1630 | display_info (ignore, from_tty) | |
1631 | char *ignore; | |
1632 | int from_tty; | |
1633 | { | |
1634 | register struct display *d; | |
1635 | ||
1636 | if (!display_chain) | |
1637 | printf_unfiltered ("There are no auto-display expressions now.\n"); | |
1638 | else | |
1639 | printf_filtered ("Auto-display expressions now in effect:\n\ | |
1640 | Num Enb Expression\n"); | |
1641 | ||
1642 | for (d = display_chain; d; d = d->next) | |
1643 | { | |
1644 | printf_filtered ("%d: %c ", d->number, "ny"[(int)d->status]); | |
1645 | if (d->format.size) | |
1646 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
1647 | d->format.format); | |
1648 | else if (d->format.format) | |
1649 | printf_filtered ("/%c ", d->format.format); | |
1650 | print_expression (d->exp, gdb_stdout); | |
1651 | if (d->block && !contained_in (get_selected_block (), d->block)) | |
1652 | printf_filtered (" (cannot be evaluated in the current context)"); | |
1653 | printf_filtered ("\n"); | |
1654 | gdb_flush (gdb_stdout); | |
1655 | } | |
1656 | } | |
1657 | ||
1658 | static void | |
1659 | enable_display (args, from_tty) | |
1660 | char *args; | |
1661 | int from_tty; | |
1662 | { | |
1663 | register char *p = args; | |
1664 | register char *p1; | |
1665 | register int num; | |
1666 | register struct display *d; | |
1667 | ||
1668 | if (p == 0) | |
1669 | { | |
1670 | for (d = display_chain; d; d = d->next) | |
1671 | d->status = enabled; | |
1672 | } | |
1673 | else | |
1674 | while (*p) | |
1675 | { | |
1676 | p1 = p; | |
1677 | while (*p1 >= '0' && *p1 <= '9') | |
1678 | p1++; | |
1679 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
1680 | error ("Arguments must be display numbers."); | |
1681 | ||
1682 | num = atoi (p); | |
1683 | ||
1684 | for (d = display_chain; d; d = d->next) | |
1685 | if (d->number == num) | |
1686 | { | |
1687 | d->status = enabled; | |
1688 | goto win; | |
1689 | } | |
1690 | printf_unfiltered ("No display number %d.\n", num); | |
1691 | win: | |
1692 | p = p1; | |
1693 | while (*p == ' ' || *p == '\t') | |
1694 | p++; | |
1695 | } | |
1696 | } | |
1697 | ||
1698 | /* ARGSUSED */ | |
1699 | static void | |
1700 | disable_display_command (args, from_tty) | |
1701 | char *args; | |
1702 | int from_tty; | |
1703 | { | |
1704 | register char *p = args; | |
1705 | register char *p1; | |
1706 | register struct display *d; | |
1707 | ||
1708 | if (p == 0) | |
1709 | { | |
1710 | for (d = display_chain; d; d = d->next) | |
1711 | d->status = disabled; | |
1712 | } | |
1713 | else | |
1714 | while (*p) | |
1715 | { | |
1716 | p1 = p; | |
1717 | while (*p1 >= '0' && *p1 <= '9') | |
1718 | p1++; | |
1719 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
1720 | error ("Arguments must be display numbers."); | |
1721 | ||
1722 | disable_display (atoi (p)); | |
1723 | ||
1724 | p = p1; | |
1725 | while (*p == ' ' || *p == '\t') | |
1726 | p++; | |
1727 | } | |
1728 | } | |
1729 | ||
1730 | \f | |
1731 | /* Print the value in stack frame FRAME of a variable | |
1732 | specified by a struct symbol. */ | |
1733 | ||
1734 | void | |
1735 | print_variable_value (var, frame, stream) | |
1736 | struct symbol *var; | |
1737 | struct frame_info *frame; | |
1738 | GDB_FILE *stream; | |
1739 | { | |
1740 | value_ptr val = read_var_value (var, frame); | |
1741 | ||
1742 | value_print (val, stream, 0, Val_pretty_default); | |
1743 | } | |
1744 | ||
1745 | /* Print the arguments of a stack frame, given the function FUNC | |
1746 | running in that frame (as a symbol), the info on the frame, | |
1747 | and the number of args according to the stack frame (or -1 if unknown). */ | |
1748 | ||
1749 | /* References here and elsewhere to "number of args according to the | |
1750 | stack frame" appear in all cases to refer to "number of ints of args | |
1751 | according to the stack frame". At least for VAX, i386, isi. */ | |
1752 | ||
1753 | void | |
1754 | print_frame_args (func, fi, num, stream) | |
1755 | struct symbol *func; | |
1756 | struct frame_info *fi; | |
1757 | int num; | |
1758 | GDB_FILE *stream; | |
1759 | { | |
1760 | struct block *b = NULL; | |
1761 | int nsyms = 0; | |
1762 | int first = 1; | |
1763 | register int i; | |
1764 | register struct symbol *sym; | |
1765 | register value_ptr val; | |
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; | |
1773 | ||
1774 | if (func) | |
1775 | { | |
1776 | b = SYMBOL_BLOCK_VALUE (func); | |
1777 | nsyms = BLOCK_NSYMS (b); | |
1778 | } | |
1779 | ||
1780 | for (i = 0; i < nsyms; i++) | |
1781 | { | |
1782 | QUIT; | |
1783 | sym = BLOCK_SYM (b, i); | |
1784 | ||
1785 | /* Keep track of the highest stack argument offset seen, and | |
1786 | skip over any kinds of symbols we don't care about. */ | |
1787 | ||
1788 | switch (SYMBOL_CLASS (sym)) { | |
1789 | case LOC_ARG: | |
1790 | case LOC_REF_ARG: | |
1791 | { | |
1792 | long current_offset = SYMBOL_VALUE (sym); | |
1793 | arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); | |
1794 | ||
1795 | /* Compute address of next argument by adding the size of | |
1796 | this argument and rounding to an int boundary. */ | |
1797 | current_offset | |
1798 | = ((current_offset + arg_size + sizeof (int) - 1) | |
1799 | & ~(sizeof (int) - 1)); | |
1800 | ||
1801 | /* If this is the highest offset seen yet, set highest_offset. */ | |
1802 | if (highest_offset == -1 | |
1803 | || (current_offset > highest_offset)) | |
1804 | highest_offset = current_offset; | |
1805 | ||
1806 | /* Add the number of ints we're about to print to args_printed. */ | |
1807 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); | |
1808 | } | |
1809 | ||
1810 | /* We care about types of symbols, but don't need to keep track of | |
1811 | stack offsets in them. */ | |
1812 | case LOC_REGPARM: | |
1813 | case LOC_REGPARM_ADDR: | |
1814 | case LOC_LOCAL_ARG: | |
1815 | case LOC_BASEREG_ARG: | |
1816 | break; | |
1817 | ||
1818 | /* Other types of symbols we just skip over. */ | |
1819 | default: | |
1820 | continue; | |
1821 | } | |
1822 | ||
1823 | /* We have to look up the symbol because arguments can have | |
1824 | two entries (one a parameter, one a local) and the one we | |
1825 | want is the local, which lookup_symbol will find for us. | |
1826 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1827 | small structure and gcc2 when the argument type is float | |
1828 | and it is passed as a double and converted to float by | |
1829 | the prologue (in the latter case the type of the LOC_ARG | |
1830 | symbol is double and the type of the LOC_LOCAL symbol is | |
1831 | float). */ | |
1832 | /* But if the parameter name is null, don't try it. | |
1833 | Null parameter names occur on the RS/6000, for traceback tables. | |
1834 | FIXME, should we even print them? */ | |
1835 | ||
1836 | if (*SYMBOL_NAME (sym)) | |
1837 | { | |
1838 | struct symbol *nsym; | |
1839 | nsym = lookup_symbol | |
1840 | (SYMBOL_NAME (sym), | |
1841 | b, VAR_NAMESPACE, (int *)NULL, (struct symtab **)NULL); | |
1842 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER) | |
1843 | { | |
1844 | /* There is a LOC_ARG/LOC_REGISTER pair. This means that | |
1845 | it was passed on the stack and loaded into a register, | |
1846 | or passed in a register and stored in a stack slot. | |
1847 | GDB 3.x used the LOC_ARG; GDB 4.0-4.11 used the LOC_REGISTER. | |
1848 | ||
1849 | Reasons for using the LOC_ARG: | |
1850 | (1) because find_saved_registers may be slow for remote | |
1851 | debugging, | |
1852 | (2) because registers are often re-used and stack slots | |
1853 | rarely (never?) are. Therefore using the stack slot is | |
1854 | much less likely to print garbage. | |
1855 | ||
1856 | Reasons why we might want to use the LOC_REGISTER: | |
1857 | (1) So that the backtrace prints the same value as | |
1858 | "print foo". I see no compelling reason why this needs | |
1859 | to be the case; having the backtrace print the value which | |
1860 | was passed in, and "print foo" print the value as modified | |
1861 | within the called function, makes perfect sense to me. | |
1862 | ||
1863 | Additional note: It might be nice if "info args" displayed | |
1864 | both values. | |
1865 | One more note: There is a case with sparc structure passing | |
1866 | where we need to use the LOC_REGISTER, but this is dealt with | |
1867 | by creating a single LOC_REGPARM in symbol reading. */ | |
1868 | ||
1869 | /* Leave sym (the LOC_ARG) alone. */ | |
1870 | ; | |
1871 | } | |
1872 | else | |
1873 | sym = nsym; | |
1874 | } | |
1875 | ||
1876 | /* Print the current arg. */ | |
1877 | if (! first) | |
1878 | fprintf_filtered (stream, ", "); | |
1879 | wrap_here (" "); | |
1880 | ||
1881 | annotate_arg_begin (); | |
1882 | ||
1883 | fprintf_symbol_filtered (stream, SYMBOL_SOURCE_NAME (sym), | |
1884 | SYMBOL_LANGUAGE (sym), DMGL_PARAMS | DMGL_ANSI); | |
1885 | annotate_arg_name_end (); | |
1886 | fputs_filtered ("=", stream); | |
1887 | ||
1888 | /* Avoid value_print because it will deref ref parameters. We just | |
1889 | want to print their addresses. Print ??? for args whose address | |
1890 | we do not know. We pass 2 as "recurse" to val_print because our | |
1891 | standard indentation here is 4 spaces, and val_print indents | |
1892 | 2 for each recurse. */ | |
1893 | val = read_var_value (sym, fi); | |
1894 | ||
1895 | annotate_arg_value (val == NULL ? NULL : VALUE_TYPE (val)); | |
1896 | ||
1897 | if (val) | |
1898 | { | |
7a292a7a SS |
1899 | if (GDB_TARGET_IS_D10V |
1900 | && SYMBOL_CLASS(sym) == LOC_REGPARM && TYPE_CODE(VALUE_TYPE(val)) == TYPE_CODE_PTR) | |
c906108c | 1901 | TYPE_LENGTH(VALUE_TYPE(val)) = 2; |
c906108c SS |
1902 | val_print (VALUE_TYPE (val), VALUE_CONTENTS (val), 0, |
1903 | VALUE_ADDRESS (val), | |
1904 | stream, 0, 0, 2, Val_no_prettyprint); | |
1905 | } | |
1906 | else | |
1907 | fputs_filtered ("???", stream); | |
1908 | ||
1909 | annotate_arg_end (); | |
1910 | ||
1911 | first = 0; | |
1912 | } | |
1913 | ||
1914 | /* Don't print nameless args in situations where we don't know | |
1915 | enough about the stack to find them. */ | |
1916 | if (num != -1) | |
1917 | { | |
1918 | long start; | |
1919 | ||
1920 | if (highest_offset == -1) | |
1921 | start = FRAME_ARGS_SKIP; | |
1922 | else | |
1923 | start = highest_offset; | |
1924 | ||
1925 | print_frame_nameless_args (fi, start, num - args_printed, | |
1926 | first, stream); | |
1927 | } | |
1928 | } | |
1929 | ||
1930 | /* Print nameless args on STREAM. | |
1931 | FI is the frameinfo for this frame, START is the offset | |
1932 | of the first nameless arg, and NUM is the number of nameless args to | |
1933 | print. FIRST is nonzero if this is the first argument (not just | |
1934 | the first nameless arg). */ | |
1935 | ||
1936 | static void | |
1937 | print_frame_nameless_args (fi, start, num, first, stream) | |
1938 | struct frame_info *fi; | |
1939 | long start; | |
1940 | int num; | |
1941 | int first; | |
1942 | GDB_FILE *stream; | |
1943 | { | |
1944 | int i; | |
1945 | CORE_ADDR argsaddr; | |
1946 | long arg_value; | |
1947 | ||
1948 | for (i = 0; i < num; i++) | |
1949 | { | |
1950 | QUIT; | |
1951 | #ifdef NAMELESS_ARG_VALUE | |
1952 | NAMELESS_ARG_VALUE (fi, start, &arg_value); | |
1953 | #else | |
1954 | argsaddr = FRAME_ARGS_ADDRESS (fi); | |
1955 | if (!argsaddr) | |
1956 | return; | |
1957 | ||
1958 | arg_value = read_memory_integer (argsaddr + start, sizeof (int)); | |
1959 | #endif | |
1960 | ||
1961 | if (!first) | |
1962 | fprintf_filtered (stream, ", "); | |
1963 | ||
1964 | #ifdef PRINT_NAMELESS_INTEGER | |
1965 | PRINT_NAMELESS_INTEGER (stream, arg_value); | |
1966 | #else | |
1967 | #ifdef PRINT_TYPELESS_INTEGER | |
1968 | PRINT_TYPELESS_INTEGER (stream, builtin_type_int, (LONGEST) arg_value); | |
1969 | #else | |
1970 | fprintf_filtered (stream, "%ld", arg_value); | |
1971 | #endif /* PRINT_TYPELESS_INTEGER */ | |
1972 | #endif /* PRINT_NAMELESS_INTEGER */ | |
1973 | first = 0; | |
1974 | start += sizeof (int); | |
1975 | } | |
1976 | } | |
1977 | \f | |
1978 | /* ARGSUSED */ | |
1979 | static void | |
1980 | printf_command (arg, from_tty) | |
1981 | char *arg; | |
1982 | int from_tty; | |
1983 | { | |
1984 | register char *f = NULL; | |
1985 | register char *s = arg; | |
1986 | char *string = NULL; | |
1987 | value_ptr *val_args; | |
1988 | char *substrings; | |
1989 | char *current_substring; | |
1990 | int nargs = 0; | |
1991 | int allocated_args = 20; | |
1992 | struct cleanup *old_cleanups; | |
1993 | ||
1994 | val_args = (value_ptr *) xmalloc (allocated_args * sizeof (value_ptr)); | |
1995 | old_cleanups = make_cleanup ((make_cleanup_func) free_current_contents, | |
1996 | &val_args); | |
1997 | ||
1998 | if (s == 0) | |
1999 | error_no_arg ("format-control string and values to print"); | |
2000 | ||
2001 | /* Skip white space before format string */ | |
2002 | while (*s == ' ' || *s == '\t') s++; | |
2003 | ||
2004 | /* A format string should follow, enveloped in double quotes */ | |
2005 | if (*s++ != '"') | |
2006 | error ("Bad format string, missing '\"'."); | |
2007 | ||
2008 | /* Parse the format-control string and copy it into the string STRING, | |
2009 | processing some kinds of escape sequence. */ | |
2010 | ||
2011 | f = string = (char *) alloca (strlen (s) + 1); | |
2012 | ||
2013 | while (*s != '"') | |
2014 | { | |
2015 | int c = *s++; | |
2016 | switch (c) | |
2017 | { | |
2018 | case '\0': | |
2019 | error ("Bad format string, non-terminated '\"'."); | |
2020 | ||
2021 | case '\\': | |
2022 | switch (c = *s++) | |
2023 | { | |
2024 | case '\\': | |
2025 | *f++ = '\\'; | |
2026 | break; | |
2027 | case 'a': | |
2028 | #ifdef __STDC__ | |
2029 | *f++ = '\a'; | |
2030 | #else | |
2031 | *f++ = '\007'; /* Bell */ | |
2032 | #endif | |
2033 | break; | |
2034 | case 'b': | |
2035 | *f++ = '\b'; | |
2036 | break; | |
2037 | case 'f': | |
2038 | *f++ = '\f'; | |
2039 | break; | |
2040 | case 'n': | |
2041 | *f++ = '\n'; | |
2042 | break; | |
2043 | case 'r': | |
2044 | *f++ = '\r'; | |
2045 | break; | |
2046 | case 't': | |
2047 | *f++ = '\t'; | |
2048 | break; | |
2049 | case 'v': | |
2050 | *f++ = '\v'; | |
2051 | break; | |
2052 | case '"': | |
2053 | *f++ = '"'; | |
2054 | break; | |
2055 | default: | |
2056 | /* ??? TODO: handle other escape sequences */ | |
2057 | error ("Unrecognized escape character \\%c in format string.", | |
2058 | c); | |
2059 | } | |
2060 | break; | |
2061 | ||
2062 | default: | |
2063 | *f++ = c; | |
2064 | } | |
2065 | } | |
2066 | ||
2067 | /* Skip over " and following space and comma. */ | |
2068 | s++; | |
2069 | *f++ = '\0'; | |
2070 | while (*s == ' ' || *s == '\t') s++; | |
2071 | ||
2072 | if (*s != ',' && *s != 0) | |
2073 | error ("Invalid argument syntax"); | |
2074 | ||
2075 | if (*s == ',') s++; | |
2076 | while (*s == ' ' || *s == '\t') s++; | |
2077 | ||
2078 | /* Need extra space for the '\0's. Doubling the size is sufficient. */ | |
2079 | substrings = alloca (strlen (string) * 2); | |
2080 | current_substring = substrings; | |
2081 | ||
2082 | { | |
2083 | /* Now scan the string for %-specs and see what kinds of args they want. | |
2084 | argclass[I] classifies the %-specs so we can give printf_filtered | |
2085 | something of the right size. */ | |
2086 | ||
2087 | enum argclass {no_arg, int_arg, string_arg, double_arg, long_long_arg}; | |
2088 | enum argclass *argclass; | |
2089 | enum argclass this_argclass; | |
2090 | char *last_arg; | |
2091 | int nargs_wanted; | |
2092 | int lcount; | |
2093 | int i; | |
2094 | ||
2095 | argclass = (enum argclass *) alloca (strlen (s) * sizeof *argclass); | |
2096 | nargs_wanted = 0; | |
2097 | f = string; | |
2098 | last_arg = string; | |
2099 | while (*f) | |
2100 | if (*f++ == '%') | |
2101 | { | |
2102 | lcount = 0; | |
2103 | while (strchr ("0123456789.hlL-+ #", *f)) | |
2104 | { | |
2105 | if (*f == 'l' || *f == 'L') | |
2106 | lcount++; | |
2107 | f++; | |
2108 | } | |
2109 | switch (*f) | |
2110 | { | |
2111 | case 's': | |
2112 | this_argclass = string_arg; | |
2113 | break; | |
2114 | ||
2115 | case 'e': | |
2116 | case 'f': | |
2117 | case 'g': | |
2118 | this_argclass = double_arg; | |
2119 | break; | |
2120 | ||
2121 | case '*': | |
2122 | error ("`*' not supported for precision or width in printf"); | |
2123 | ||
2124 | case 'n': | |
2125 | error ("Format specifier `n' not supported in printf"); | |
2126 | ||
2127 | case '%': | |
2128 | this_argclass = no_arg; | |
2129 | break; | |
2130 | ||
2131 | default: | |
2132 | if (lcount > 1) | |
2133 | this_argclass = long_long_arg; | |
2134 | else | |
2135 | this_argclass = int_arg; | |
2136 | break; | |
2137 | } | |
2138 | f++; | |
2139 | if (this_argclass != no_arg) | |
2140 | { | |
2141 | strncpy (current_substring, last_arg, f - last_arg); | |
2142 | current_substring += f - last_arg; | |
2143 | *current_substring++ = '\0'; | |
2144 | last_arg = f; | |
2145 | argclass[nargs_wanted++] = this_argclass; | |
2146 | } | |
2147 | } | |
2148 | ||
2149 | /* Now, parse all arguments and evaluate them. | |
2150 | Store the VALUEs in VAL_ARGS. */ | |
2151 | ||
2152 | while (*s != '\0') | |
2153 | { | |
2154 | char *s1; | |
2155 | if (nargs == allocated_args) | |
2156 | val_args = (value_ptr *) xrealloc ((char *) val_args, | |
2157 | (allocated_args *= 2) | |
2158 | * sizeof (value_ptr)); | |
2159 | s1 = s; | |
2160 | val_args[nargs] = parse_to_comma_and_eval (&s1); | |
2161 | ||
2162 | /* If format string wants a float, unchecked-convert the value to | |
2163 | floating point of the same size */ | |
2164 | ||
2165 | if (argclass[nargs] == double_arg) | |
2166 | { | |
2167 | struct type *type = VALUE_TYPE (val_args[nargs]); | |
2168 | if (TYPE_LENGTH (type) == sizeof (float)) | |
2169 | VALUE_TYPE (val_args[nargs]) = builtin_type_float; | |
2170 | if (TYPE_LENGTH (type) == sizeof (double)) | |
2171 | VALUE_TYPE (val_args[nargs]) = builtin_type_double; | |
2172 | } | |
2173 | nargs++; | |
2174 | s = s1; | |
2175 | if (*s == ',') | |
2176 | s++; | |
2177 | } | |
2178 | ||
2179 | if (nargs != nargs_wanted) | |
2180 | error ("Wrong number of arguments for specified format-string"); | |
2181 | ||
2182 | /* Now actually print them. */ | |
2183 | current_substring = substrings; | |
2184 | for (i = 0; i < nargs; i++) | |
2185 | { | |
2186 | switch (argclass[i]) | |
2187 | { | |
2188 | case string_arg: | |
2189 | { | |
2190 | char *str; | |
2191 | CORE_ADDR tem; | |
2192 | int j; | |
2193 | tem = value_as_pointer (val_args[i]); | |
2194 | ||
2195 | /* This is a %s argument. Find the length of the string. */ | |
2196 | for (j = 0; ; j++) | |
2197 | { | |
2198 | char c; | |
2199 | QUIT; | |
2200 | read_memory_section (tem + j, &c, 1, | |
2201 | VALUE_BFD_SECTION (val_args[i])); | |
2202 | if (c == 0) | |
2203 | break; | |
2204 | } | |
2205 | ||
2206 | /* Copy the string contents into a string inside GDB. */ | |
2207 | str = (char *) alloca (j + 1); | |
2208 | read_memory_section (tem, str, j, VALUE_BFD_SECTION (val_args[i])); | |
2209 | str[j] = 0; | |
2210 | ||
2211 | printf_filtered (current_substring, str); | |
2212 | } | |
2213 | break; | |
2214 | case double_arg: | |
2215 | { | |
2216 | double val = value_as_double (val_args[i]); | |
2217 | printf_filtered (current_substring, val); | |
2218 | break; | |
2219 | } | |
2220 | case long_long_arg: | |
2221 | #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG) | |
2222 | { | |
2223 | long long val = value_as_long (val_args[i]); | |
2224 | printf_filtered (current_substring, val); | |
2225 | break; | |
2226 | } | |
2227 | #else | |
2228 | error ("long long not supported in printf"); | |
2229 | #endif | |
2230 | case int_arg: | |
2231 | { | |
2232 | /* FIXME: there should be separate int_arg and long_arg. */ | |
2233 | long val = value_as_long (val_args[i]); | |
2234 | printf_filtered (current_substring, val); | |
2235 | break; | |
2236 | } | |
2237 | default: /* purecov: deadcode */ | |
2238 | error ("internal error in printf_command"); /* purecov: deadcode */ | |
2239 | } | |
2240 | /* Skip to the next substring. */ | |
2241 | current_substring += strlen (current_substring) + 1; | |
2242 | } | |
2243 | /* Print the portion of the format string after the last argument. */ | |
2244 | printf_filtered (last_arg); | |
2245 | } | |
2246 | do_cleanups (old_cleanups); | |
2247 | } | |
2248 | \f | |
2249 | /* Dump a specified section of assembly code. With no command line | |
2250 | arguments, this command will dump the assembly code for the | |
2251 | function surrounding the pc value in the selected frame. With one | |
2252 | argument, it will dump the assembly code surrounding that pc value. | |
2253 | Two arguments are interpeted as bounds within which to dump | |
2254 | assembly. */ | |
2255 | ||
2256 | /* ARGSUSED */ | |
2257 | static void | |
2258 | disassemble_command (arg, from_tty) | |
2259 | char *arg; | |
2260 | int from_tty; | |
2261 | { | |
2262 | CORE_ADDR low, high; | |
2263 | char *name; | |
2264 | CORE_ADDR pc, pc_masked; | |
2265 | char *space_index; | |
2266 | #if 0 | |
2267 | asection *section; | |
2268 | #endif | |
2269 | ||
2270 | name = NULL; | |
2271 | if (!arg) | |
2272 | { | |
2273 | if (!selected_frame) | |
2274 | error ("No frame selected.\n"); | |
2275 | ||
2276 | pc = get_frame_pc (selected_frame); | |
2277 | if (find_pc_partial_function (pc, &name, &low, &high) == 0) | |
2278 | error ("No function contains program counter for selected frame.\n"); | |
2279 | #if defined(TUI) | |
2280 | else if (tui_version) | |
2281 | low = (CORE_ADDR)tuiDo((TuiOpaqueFuncPtr)tui_vGetLowDisassemblyAddress, | |
2282 | (Opaque)low, | |
2283 | (Opaque)pc); | |
2284 | #endif | |
2285 | low += FUNCTION_START_OFFSET; | |
2286 | } | |
2287 | else if (!(space_index = (char *) strchr (arg, ' '))) | |
2288 | { | |
2289 | /* One argument. */ | |
2290 | pc = parse_and_eval_address (arg); | |
2291 | if (find_pc_partial_function (pc, &name, &low, &high) == 0) | |
2292 | error ("No function contains specified address.\n"); | |
2293 | #if defined(TUI) | |
2294 | else if (tui_version) | |
2295 | low = (CORE_ADDR)tuiDo((TuiOpaqueFuncPtr)tui_vGetLowDisassemblyAddress, | |
2296 | (Opaque)low, | |
2297 | (Opaque)pc); | |
2298 | #endif | |
2299 | #if 0 | |
2300 | if (overlay_debugging) | |
2301 | { | |
2302 | section = find_pc_overlay (pc); | |
2303 | if (pc_in_unmapped_range (pc, section)) | |
2304 | { | |
2305 | /* find_pc_partial_function will have returned low and high | |
2306 | relative to the symbolic (mapped) address range. Need to | |
2307 | translate them back to the unmapped range where PC is. */ | |
2308 | low = overlay_unmapped_address (low, section); | |
2309 | high = overlay_unmapped_address (high, section); | |
2310 | } | |
2311 | } | |
2312 | #endif | |
2313 | low += FUNCTION_START_OFFSET; | |
2314 | } | |
2315 | else | |
2316 | { | |
2317 | /* Two arguments. */ | |
2318 | *space_index = '\0'; | |
2319 | low = parse_and_eval_address (arg); | |
2320 | high = parse_and_eval_address (space_index + 1); | |
2321 | } | |
2322 | ||
2323 | #if defined(TUI) | |
2324 | if (!tui_version || | |
2325 | m_winPtrIsNull(disassemWin) || !disassemWin->generic.isVisible) | |
2326 | #endif | |
2327 | { | |
2328 | printf_filtered ("Dump of assembler code "); | |
2329 | if (name != NULL) | |
2330 | { | |
2331 | printf_filtered ("for function %s:\n", name); | |
2332 | } | |
2333 | else | |
2334 | { | |
2335 | printf_filtered ("from "); | |
2336 | print_address_numeric (low, 1, gdb_stdout); | |
2337 | printf_filtered (" to "); | |
2338 | print_address_numeric (high, 1, gdb_stdout); | |
2339 | printf_filtered (":\n"); | |
2340 | } | |
2341 | ||
2342 | /* Dump the specified range. */ | |
2343 | pc = low; | |
2344 | ||
2345 | #ifdef GDB_TARGET_MASK_DISAS_PC | |
2346 | pc_masked = GDB_TARGET_MASK_DISAS_PC (pc); | |
2347 | #else | |
2348 | pc_masked = pc; | |
2349 | #endif | |
2350 | ||
2351 | while (pc_masked < high) | |
2352 | { | |
2353 | QUIT; | |
2354 | print_address (pc_masked, gdb_stdout); | |
2355 | printf_filtered (":\t"); | |
2356 | /* We often wrap here if there are long symbolic names. */ | |
2357 | wrap_here (" "); | |
2358 | pc += print_insn (pc, gdb_stdout); | |
2359 | printf_filtered ("\n"); | |
2360 | ||
2361 | #ifdef GDB_TARGET_MASK_DISAS_PC | |
2362 | pc_masked = GDB_TARGET_MASK_DISAS_PC (pc); | |
2363 | #else | |
2364 | pc_masked = pc; | |
2365 | #endif | |
2366 | } | |
2367 | printf_filtered ("End of assembler dump.\n"); | |
2368 | gdb_flush (gdb_stdout); | |
2369 | } | |
2370 | #if defined(TUI) | |
2371 | else | |
2372 | { | |
2373 | tuiDo((TuiOpaqueFuncPtr)tui_vAddWinToLayout, DISASSEM_WIN); | |
2374 | tuiDo((TuiOpaqueFuncPtr)tui_vUpdateSourceWindowsWithAddr, low); | |
2375 | } | |
2376 | #endif | |
2377 | } | |
2378 | ||
2379 | /* Print the instruction at address MEMADDR in debugged memory, | |
2380 | on STREAM. Returns length of the instruction, in bytes. */ | |
2381 | ||
2382 | static int | |
2383 | print_insn (memaddr, stream) | |
2384 | CORE_ADDR memaddr; | |
2385 | GDB_FILE *stream; | |
2386 | { | |
2387 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
2388 | TARGET_PRINT_INSN_INFO->endian = BFD_ENDIAN_BIG; | |
2389 | else | |
2390 | TARGET_PRINT_INSN_INFO->endian = BFD_ENDIAN_LITTLE; | |
2391 | ||
2392 | if (TARGET_ARCHITECTURE != NULL) | |
2393 | TARGET_PRINT_INSN_INFO->mach = TARGET_ARCHITECTURE->mach; | |
2394 | /* else: should set .mach=0 but some disassemblers don't grok this */ | |
2395 | ||
2396 | return TARGET_PRINT_INSN (memaddr, TARGET_PRINT_INSN_INFO); | |
2397 | } | |
2398 | ||
2399 | \f | |
2400 | void | |
2401 | _initialize_printcmd () | |
2402 | { | |
2403 | current_display_number = -1; | |
2404 | ||
2405 | add_info ("address", address_info, | |
2406 | "Describe where symbol SYM is stored."); | |
2407 | ||
2408 | add_info ("symbol", sym_info, | |
2409 | "Describe what symbol is at location ADDR.\n\ | |
2410 | Only for symbols with fixed locations (global or static scope)."); | |
2411 | ||
2412 | add_com ("x", class_vars, x_command, | |
2413 | concat ("Examine memory: x/FMT ADDRESS.\n\ | |
2414 | ADDRESS is an expression for the memory address to examine.\n\ | |
2415 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2416 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
2417 | t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n", | |
2418 | "Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ | |
2419 | The specified number of objects of the specified size are printed\n\ | |
2420 | according to the format.\n\n\ | |
2421 | Defaults for format and size letters are those previously used.\n\ | |
2422 | Default count is 1. Default address is following last thing printed\n\ | |
2423 | with this command or \"print\".", NULL)); | |
2424 | ||
2425 | add_com ("disassemble", class_vars, disassemble_command, | |
2426 | "Disassemble a specified section of memory.\n\ | |
2427 | Default is the function surrounding the pc of the selected frame.\n\ | |
2428 | With a single argument, the function surrounding that address is dumped.\n\ | |
2429 | Two arguments are taken as a range of memory to dump."); | |
2430 | if (xdb_commands) | |
2431 | add_com_alias ("va", "disassemble", class_xdb, 0); | |
2432 | ||
2433 | #if 0 | |
2434 | add_com ("whereis", class_vars, whereis_command, | |
2435 | "Print line number and file of definition of variable."); | |
2436 | #endif | |
2437 | ||
2438 | add_info ("display", display_info, | |
2439 | "Expressions to display when program stops, with code numbers."); | |
2440 | ||
2441 | add_cmd ("undisplay", class_vars, undisplay_command, | |
2442 | "Cancel some expressions to be displayed when program stops.\n\ | |
2443 | Arguments are the code numbers of the expressions to stop displaying.\n\ | |
2444 | No argument means cancel all automatic-display expressions.\n\ | |
2445 | \"delete display\" has the same effect as this command.\n\ | |
2446 | Do \"info display\" to see current list of code numbers.", | |
2447 | &cmdlist); | |
2448 | ||
2449 | add_com ("display", class_vars, display_command, | |
2450 | "Print value of expression EXP each time the program stops.\n\ | |
2451 | /FMT may be used before EXP as in the \"print\" command.\n\ | |
2452 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2453 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2454 | and examining is done as in the \"x\" command.\n\n\ | |
2455 | With no argument, display all currently requested auto-display expressions.\n\ | |
2456 | Use \"undisplay\" to cancel display requests previously made." | |
2457 | ); | |
2458 | ||
2459 | add_cmd ("display", class_vars, enable_display, | |
2460 | "Enable some expressions to be displayed when program stops.\n\ | |
2461 | Arguments are the code numbers of the expressions to resume displaying.\n\ | |
2462 | No argument means enable all automatic-display expressions.\n\ | |
2463 | Do \"info display\" to see current list of code numbers.", &enablelist); | |
2464 | ||
2465 | add_cmd ("display", class_vars, disable_display_command, | |
2466 | "Disable some expressions to be displayed when program stops.\n\ | |
2467 | Arguments are the code numbers of the expressions to stop displaying.\n\ | |
2468 | No argument means disable all automatic-display expressions.\n\ | |
2469 | Do \"info display\" to see current list of code numbers.", &disablelist); | |
2470 | ||
2471 | add_cmd ("display", class_vars, undisplay_command, | |
2472 | "Cancel some expressions to be displayed when program stops.\n\ | |
2473 | Arguments are the code numbers of the expressions to stop displaying.\n\ | |
2474 | No argument means cancel all automatic-display expressions.\n\ | |
2475 | Do \"info display\" to see current list of code numbers.", &deletelist); | |
2476 | ||
2477 | add_com ("printf", class_vars, printf_command, | |
2478 | "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
2479 | This is useful for formatted output in user-defined commands."); | |
2480 | ||
2481 | add_com ("output", class_vars, output_command, | |
2482 | "Like \"print\" but don't put in value history and don't print newline.\n\ | |
2483 | This is useful in user-defined commands."); | |
2484 | ||
2485 | add_prefix_cmd ("set", class_vars, set_command, | |
2486 | concat ("Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
2487 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ | |
2488 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2489 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2490 | variable in the program being debugged. EXP is any valid expression.\n", | |
2491 | "Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
2492 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ | |
2493 | You can see these environment settings with the \"show\" command.", NULL), | |
2494 | &setlist, "set ", 1, &cmdlist); | |
2495 | if (dbx_commands) | |
2496 | add_com("assign", class_vars, set_command, concat ("Evaluate expression \ | |
2497 | EXP and assign result to variable VAR, using assignment\n\ | |
2498 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ | |
2499 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2500 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2501 | variable in the program being debugged. EXP is any valid expression.\n", | |
2502 | "Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
2503 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ | |
2504 | You can see these environment settings with the \"show\" command.", NULL)); | |
2505 | ||
2506 | /* "call" is the same as "set", but handy for dbx users to call fns. */ | |
2507 | add_com ("call", class_vars, call_command, | |
2508 | "Call a function in the program.\n\ | |
2509 | The argument is the function name and arguments, in the notation of the\n\ | |
2510 | current working language. The result is printed and saved in the value\n\ | |
2511 | history, if it is not void."); | |
2512 | ||
2513 | add_cmd ("variable", class_vars, set_command, | |
2514 | "Evaluate expression EXP and assign result to variable VAR, using assignment\n\ | |
2515 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ | |
2516 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2517 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2518 | variable in the program being debugged. EXP is any valid expression.\n\ | |
2519 | This may usually be abbreviated to simply \"set\".", | |
2520 | &setlist); | |
2521 | ||
2522 | add_com ("print", class_vars, print_command, | |
2523 | concat ("Print value of expression EXP.\n\ | |
2524 | Variables accessible are those of the lexical environment of the selected\n\ | |
2525 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2526 | \n\ | |
2527 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2528 | $$NUM refers to NUM'th value back from the last one.\n\ | |
2529 | Names starting with $ refer to registers (with the values they would have\n", | |
2530 | "if the program were to return to the stack frame now selected, restoring\n\ | |
2531 | all registers saved by frames farther in) or else to debugger\n\ | |
2532 | \"convenience\" variables (any such name not a known register).\n\ | |
2533 | Use assignment expressions to give values to convenience variables.\n", | |
2534 | "\n\ | |
2535 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ | |
2536 | @ is a binary operator for treating consecutive data objects\n\ | |
2537 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2538 | element is FOO, whose second element is stored in the space following\n\ | |
2539 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
2540 | resides in memory.\n", | |
2541 | "\n\ | |
2542 | EXP may be preceded with /FMT, where FMT is a format letter\n\ | |
2543 | but no count or size letter (see \"x\" command).", NULL)); | |
2544 | add_com_alias ("p", "print", class_vars, 1); | |
2545 | ||
2546 | add_com ("inspect", class_vars, inspect_command, | |
2547 | "Same as \"print\" command, except that if you are running in the epoch\n\ | |
2548 | environment, the value is printed in its own window."); | |
2549 | ||
2550 | add_show_from_set ( | |
2551 | add_set_cmd ("max-symbolic-offset", no_class, var_uinteger, | |
2552 | (char *)&max_symbolic_offset, | |
2553 | "Set the largest offset that will be printed in <symbol+1234> form.", | |
2554 | &setprintlist), | |
2555 | &showprintlist); | |
2556 | add_show_from_set ( | |
2557 | add_set_cmd ("symbol-filename", no_class, var_boolean, | |
2558 | (char *)&print_symbol_filename, | |
2559 | "Set printing of source filename and line number with <symbol>.", | |
2560 | &setprintlist), | |
2561 | &showprintlist); | |
2562 | ||
2563 | /* For examine/instruction a single byte quantity is specified as | |
2564 | the data. This avoids problems with value_at_lazy() requiring a | |
2565 | valid data type (and rejecting VOID). */ | |
2566 | examine_i_type = init_type (TYPE_CODE_INT, 1, 0, "examine_i_type", NULL); | |
2567 | ||
2568 | examine_b_type = init_type (TYPE_CODE_INT, 1, 0, "examine_b_type", NULL); | |
2569 | examine_h_type = init_type (TYPE_CODE_INT, 2, 0, "examine_h_type", NULL); | |
2570 | examine_w_type = init_type (TYPE_CODE_INT, 4, 0, "examine_w_type", NULL); | |
2571 | examine_g_type = init_type (TYPE_CODE_INT, 8, 0, "examine_g_type", NULL); | |
2572 | ||
2573 | } |