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[deliverable/binutils-gdb.git] / gdb / printcmd.c
CommitLineData
c906108c 1/* Print values for GNU debugger GDB.
e2ad119d 2
8926118c
AC
3 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
4 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software
5 Foundation, Inc.
c906108c 6
c5aa993b 7 This file is part of GDB.
c906108c 8
c5aa993b
JM
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
c906108c 13
c5aa993b
JM
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
c906108c 18
c5aa993b
JM
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
c906108c
SS
23
24#include "defs.h"
25#include "gdb_string.h"
26#include "frame.h"
27#include "symtab.h"
28#include "gdbtypes.h"
29#include "value.h"
30#include "language.h"
31#include "expression.h"
32#include "gdbcore.h"
33#include "gdbcmd.h"
34#include "target.h"
35#include "breakpoint.h"
36#include "demangle.h"
37#include "valprint.h"
38#include "annotate.h"
c5aa993b
JM
39#include "symfile.h" /* for overlay functions */
40#include "objfiles.h" /* ditto */
c94fdfd0 41#include "completer.h" /* for completion functions */
8b93c638 42#include "ui-out.h"
261397f8 43#include "gdb_assert.h"
c906108c
SS
44
45extern int asm_demangle; /* Whether to demangle syms in asm printouts */
46extern int addressprint; /* Whether to print hex addresses in HLL " */
47
48struct format_data
c5aa993b
JM
49 {
50 int count;
51 char format;
52 char size;
53 };
c906108c
SS
54
55/* Last specified output format. */
56
57static char last_format = 'x';
58
59/* Last specified examination size. 'b', 'h', 'w' or `q'. */
60
61static char last_size = 'w';
62
63/* Default address to examine next. */
64
65static CORE_ADDR next_address;
66
67/* Default section to examine next. */
68
69static asection *next_section;
70
71/* Last address examined. */
72
73static CORE_ADDR last_examine_address;
74
75/* Contents of last address examined.
76 This is not valid past the end of the `x' command! */
77
3d6d86c6 78static struct value *last_examine_value;
c906108c
SS
79
80/* Largest offset between a symbolic value and an address, that will be
81 printed as `0x1234 <symbol+offset>'. */
82
83static unsigned int max_symbolic_offset = UINT_MAX;
84
85/* Append the source filename and linenumber of the symbol when
86 printing a symbolic value as `<symbol at filename:linenum>' if set. */
87static int print_symbol_filename = 0;
88
89/* Number of auto-display expression currently being displayed.
90 So that we can disable it if we get an error or a signal within it.
91 -1 when not doing one. */
92
93int current_display_number;
94
95/* Flag to low-level print routines that this value is being printed
96 in an epoch window. We'd like to pass this as a parameter, but
97 every routine would need to take it. Perhaps we can encapsulate
98 this in the I/O stream once we have GNU stdio. */
99
100int inspect_it = 0;
101
102struct display
c5aa993b
JM
103 {
104 /* Chain link to next auto-display item. */
105 struct display *next;
106 /* Expression to be evaluated and displayed. */
107 struct expression *exp;
108 /* Item number of this auto-display item. */
109 int number;
110 /* Display format specified. */
111 struct format_data format;
112 /* Innermost block required by this expression when evaluated */
113 struct block *block;
114 /* Status of this display (enabled or disabled) */
b5de0fa7 115 int enabled_p;
c5aa993b 116 };
c906108c
SS
117
118/* Chain of expressions whose values should be displayed
119 automatically each time the program stops. */
120
121static struct display *display_chain;
122
123static int display_number;
124
125/* Prototypes for exported functions. */
126
a14ed312 127void output_command (char *, int);
c906108c 128
a14ed312 129void _initialize_printcmd (void);
c906108c
SS
130
131/* Prototypes for local functions. */
132
a14ed312 133static void delete_display (int);
c906108c 134
a14ed312 135static void enable_display (char *, int);
c906108c 136
a14ed312 137static void disable_display_command (char *, int);
c906108c 138
a14ed312 139static void disassemble_command (char *, int);
c906108c 140
a14ed312 141static void printf_command (char *, int);
c906108c 142
d9fcf2fb
JM
143static void print_frame_nameless_args (struct frame_info *, long,
144 int, int, struct ui_file *);
c906108c 145
a14ed312 146static void display_info (char *, int);
c906108c 147
a14ed312 148static void do_one_display (struct display *);
c906108c 149
a14ed312 150static void undisplay_command (char *, int);
c906108c 151
a14ed312 152static void free_display (struct display *);
c906108c 153
a14ed312 154static void display_command (char *, int);
c906108c 155
a14ed312 156void x_command (char *, int);
c906108c 157
a14ed312 158static void address_info (char *, int);
c906108c 159
a14ed312 160static void set_command (char *, int);
c906108c 161
a14ed312 162static void call_command (char *, int);
c906108c 163
a14ed312 164static void inspect_command (char *, int);
c906108c 165
a14ed312 166static void print_command (char *, int);
c906108c 167
a14ed312 168static void print_command_1 (char *, int, int);
c906108c 169
a14ed312 170static void validate_format (struct format_data, char *);
c906108c 171
a14ed312
KB
172static void do_examine (struct format_data, CORE_ADDR addr,
173 asection * section);
c906108c 174
3d6d86c6 175static void print_formatted (struct value *, int, int, struct ui_file *);
c906108c 176
a14ed312 177static struct format_data decode_format (char **, int, int);
c906108c 178
d9fcf2fb 179static int print_insn (CORE_ADDR, struct ui_file *);
c906108c 180
a14ed312 181static void sym_info (char *, int);
c906108c 182\f
c5aa993b 183
c906108c
SS
184/* Decode a format specification. *STRING_PTR should point to it.
185 OFORMAT and OSIZE are used as defaults for the format and size
186 if none are given in the format specification.
187 If OSIZE is zero, then the size field of the returned value
188 should be set only if a size is explicitly specified by the
189 user.
190 The structure returned describes all the data
191 found in the specification. In addition, *STRING_PTR is advanced
192 past the specification and past all whitespace following it. */
193
194static struct format_data
fba45db2 195decode_format (char **string_ptr, int oformat, int osize)
c906108c
SS
196{
197 struct format_data val;
198 register char *p = *string_ptr;
199
200 val.format = '?';
201 val.size = '?';
202 val.count = 1;
203
204 if (*p >= '0' && *p <= '9')
205 val.count = atoi (p);
c5aa993b
JM
206 while (*p >= '0' && *p <= '9')
207 p++;
c906108c
SS
208
209 /* Now process size or format letters that follow. */
210
211 while (1)
212 {
213 if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g')
214 val.size = *p++;
215 else if (*p >= 'a' && *p <= 'z')
216 val.format = *p++;
217 else
218 break;
219 }
220
c5aa993b
JM
221 while (*p == ' ' || *p == '\t')
222 p++;
c906108c
SS
223 *string_ptr = p;
224
225 /* Set defaults for format and size if not specified. */
226 if (val.format == '?')
227 {
228 if (val.size == '?')
229 {
230 /* Neither has been specified. */
231 val.format = oformat;
232 val.size = osize;
233 }
234 else
235 /* If a size is specified, any format makes a reasonable
236 default except 'i'. */
237 val.format = oformat == 'i' ? 'x' : oformat;
238 }
239 else if (val.size == '?')
240 switch (val.format)
241 {
242 case 'a':
243 case 's':
244 /* Pick the appropriate size for an address. */
245 if (TARGET_PTR_BIT == 64)
246 val.size = osize ? 'g' : osize;
247 else if (TARGET_PTR_BIT == 32)
248 val.size = osize ? 'w' : osize;
249 else if (TARGET_PTR_BIT == 16)
250 val.size = osize ? 'h' : osize;
251 else
252 /* Bad value for TARGET_PTR_BIT */
e1e9e218 253 internal_error (__FILE__, __LINE__, "failed internal consistency check");
c906108c
SS
254 break;
255 case 'f':
256 /* Floating point has to be word or giantword. */
257 if (osize == 'w' || osize == 'g')
258 val.size = osize;
259 else
260 /* Default it to giantword if the last used size is not
261 appropriate. */
262 val.size = osize ? 'g' : osize;
263 break;
264 case 'c':
265 /* Characters default to one byte. */
266 val.size = osize ? 'b' : osize;
267 break;
268 default:
269 /* The default is the size most recently specified. */
270 val.size = osize;
271 }
272
273 return val;
274}
275\f
2acceee2 276/* Print value VAL on stream according to FORMAT, a letter or 0.
c906108c
SS
277 Do not end with a newline.
278 0 means print VAL according to its own type.
279 SIZE is the letter for the size of datum being printed.
280 This is used to pad hex numbers so they line up. */
281
282static void
3d6d86c6 283print_formatted (struct value *val, register int format, int size,
fba45db2 284 struct ui_file *stream)
c906108c
SS
285{
286 struct type *type = check_typedef (VALUE_TYPE (val));
287 int len = TYPE_LENGTH (type);
288
289 if (VALUE_LVAL (val) == lval_memory)
290 {
291 next_address = VALUE_ADDRESS (val) + len;
292 next_section = VALUE_BFD_SECTION (val);
293 }
294
295 switch (format)
296 {
297 case 's':
298 /* FIXME: Need to handle wchar_t's here... */
299 next_address = VALUE_ADDRESS (val)
2acceee2 300 + val_print_string (VALUE_ADDRESS (val), -1, 1, stream);
c906108c
SS
301 next_section = VALUE_BFD_SECTION (val);
302 break;
303
304 case 'i':
305 /* The old comment says
c5aa993b
JM
306 "Force output out, print_insn not using _filtered".
307 I'm not completely sure what that means, I suspect most print_insn
308 now do use _filtered, so I guess it's obsolete.
309 --Yes, it does filter now, and so this is obsolete. -JB */
c906108c
SS
310
311 /* We often wrap here if there are long symbolic names. */
312 wrap_here (" ");
313 next_address = VALUE_ADDRESS (val)
2acceee2 314 + print_insn (VALUE_ADDRESS (val), stream);
c906108c
SS
315 next_section = VALUE_BFD_SECTION (val);
316 break;
317
318 default:
319 if (format == 0
320 || TYPE_CODE (type) == TYPE_CODE_ARRAY
321 || TYPE_CODE (type) == TYPE_CODE_STRING
322 || TYPE_CODE (type) == TYPE_CODE_STRUCT
323 || TYPE_CODE (type) == TYPE_CODE_UNION)
c5aa993b
JM
324 /* If format is 0, use the 'natural' format for
325 * that type of value. If the type is non-scalar,
326 * we have to use language rules to print it as
327 * a series of scalars.
328 */
2acceee2 329 value_print (val, stream, format, Val_pretty_default);
c906108c 330 else
c5aa993b
JM
331 /* User specified format, so don't look to the
332 * the type to tell us what to do.
333 */
c906108c 334 print_scalar_formatted (VALUE_CONTENTS (val), type,
2acceee2 335 format, size, stream);
c906108c
SS
336 }
337}
338
339/* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
340 according to letters FORMAT and SIZE on STREAM.
341 FORMAT may not be zero. Formats s and i are not supported at this level.
342
343 This is how the elements of an array or structure are printed
344 with a format. */
345
346void
fba45db2
KB
347print_scalar_formatted (char *valaddr, struct type *type, int format, int size,
348 struct ui_file *stream)
c906108c
SS
349{
350 LONGEST val_long;
351 unsigned int len = TYPE_LENGTH (type);
352
353 if (len > sizeof (LONGEST)
354 && (format == 't'
355 || format == 'c'
356 || format == 'o'
357 || format == 'u'
358 || format == 'd'
359 || format == 'x'))
360 {
c5aa993b
JM
361 if (!TYPE_UNSIGNED (type)
362 || !extract_long_unsigned_integer (valaddr, len, &val_long))
c906108c
SS
363 {
364 /* We can't print it normally, but we can print it in hex.
365 Printing it in the wrong radix is more useful than saying
366 "use /x, you dummy". */
367 /* FIXME: we could also do octal or binary if that was the
368 desired format. */
369 /* FIXME: we should be using the size field to give us a
370 minimum field width to print. */
371
c5aa993b
JM
372 if (format == 'o')
373 print_octal_chars (stream, valaddr, len);
374 else if (format == 'd')
375 print_decimal_chars (stream, valaddr, len);
376 else if (format == 't')
377 print_binary_chars (stream, valaddr, len);
378 else
379 /* replace with call to print_hex_chars? Looks
380 like val_print_type_code_int is redoing
381 work. - edie */
c906108c 382
c5aa993b 383 val_print_type_code_int (type, valaddr, stream);
c906108c
SS
384
385 return;
386 }
387
388 /* If we get here, extract_long_unsigned_integer set val_long. */
389 }
390 else if (format != 'f')
391 val_long = unpack_long (type, valaddr);
392
ef166cf4 393 /* If the value is a pointer, and pointers and addresses are not the
d0aee0c4
FF
394 same, then at this point, the value's length (in target bytes) is
395 TARGET_ADDR_BIT/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */
ef166cf4 396 if (TYPE_CODE (type) == TYPE_CODE_PTR)
d0aee0c4 397 len = TARGET_ADDR_BIT / TARGET_CHAR_BIT;
ef166cf4 398
c906108c
SS
399 /* If we are printing it as unsigned, truncate it in case it is actually
400 a negative signed value (e.g. "print/u (short)-1" should print 65535
401 (if shorts are 16 bits) instead of 4294967295). */
402 if (format != 'd')
403 {
404 if (len < sizeof (LONGEST))
405 val_long &= ((LONGEST) 1 << HOST_CHAR_BIT * len) - 1;
406 }
407
408 switch (format)
409 {
410 case 'x':
411 if (!size)
412 {
413 /* no size specified, like in print. Print varying # of digits. */
414 print_longest (stream, 'x', 1, val_long);
415 }
416 else
417 switch (size)
418 {
419 case 'b':
420 case 'h':
421 case 'w':
422 case 'g':
423 print_longest (stream, size, 1, val_long);
424 break;
425 default:
426 error ("Undefined output size \"%c\".", size);
427 }
428 break;
429
430 case 'd':
431 print_longest (stream, 'd', 1, val_long);
432 break;
433
434 case 'u':
435 print_longest (stream, 'u', 0, val_long);
436 break;
437
438 case 'o':
439 if (val_long)
440 print_longest (stream, 'o', 1, val_long);
441 else
442 fprintf_filtered (stream, "0");
443 break;
444
445 case 'a':
593de6a6 446 {
593de6a6 447 CORE_ADDR addr = unpack_pointer (type, valaddr);
593de6a6
PS
448 print_address (addr, stream);
449 }
c906108c
SS
450 break;
451
452 case 'c':
9e0b60a8
JM
453 value_print (value_from_longest (builtin_type_true_char, val_long),
454 stream, 0, Val_pretty_default);
c906108c
SS
455 break;
456
457 case 'f':
f4697836 458 if (len == TYPE_LENGTH (builtin_type_float))
664cccae 459 type = builtin_type_float;
f4697836 460 else if (len == TYPE_LENGTH (builtin_type_double))
664cccae 461 type = builtin_type_double;
f4697836
JB
462 else if (len == TYPE_LENGTH (builtin_type_long_double))
463 type = builtin_type_long_double;
c906108c
SS
464 print_floating (valaddr, type, stream);
465 break;
466
467 case 0:
e1e9e218 468 internal_error (__FILE__, __LINE__, "failed internal consistency check");
c906108c
SS
469
470 case 't':
471 /* Binary; 't' stands for "two". */
472 {
c5aa993b
JM
473 char bits[8 * (sizeof val_long) + 1];
474 char buf[8 * (sizeof val_long) + 32];
c906108c
SS
475 char *cp = bits;
476 int width;
477
c5aa993b
JM
478 if (!size)
479 width = 8 * (sizeof val_long);
480 else
481 switch (size)
c906108c
SS
482 {
483 case 'b':
484 width = 8;
485 break;
486 case 'h':
487 width = 16;
488 break;
489 case 'w':
490 width = 32;
491 break;
492 case 'g':
493 width = 64;
494 break;
495 default:
496 error ("Undefined output size \"%c\".", size);
497 }
498
c5aa993b
JM
499 bits[width] = '\0';
500 while (width-- > 0)
501 {
502 bits[width] = (val_long & 1) ? '1' : '0';
503 val_long >>= 1;
504 }
c906108c
SS
505 if (!size)
506 {
507 while (*cp && *cp == '0')
508 cp++;
509 if (*cp == '\0')
510 cp--;
511 }
c5aa993b 512 strcpy (buf, local_binary_format_prefix ());
c906108c 513 strcat (buf, cp);
c5aa993b
JM
514 strcat (buf, local_binary_format_suffix ());
515 fprintf_filtered (stream, buf);
c906108c
SS
516 }
517 break;
518
519 default:
520 error ("Undefined output format \"%c\".", format);
521 }
522}
523
524/* Specify default address for `x' command.
525 `info lines' uses this. */
526
527void
fba45db2 528set_next_address (CORE_ADDR addr)
c906108c
SS
529{
530 next_address = addr;
531
532 /* Make address available to the user as $_. */
533 set_internalvar (lookup_internalvar ("_"),
4478b372
JB
534 value_from_pointer (lookup_pointer_type (builtin_type_void),
535 addr));
c906108c
SS
536}
537
538/* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
539 after LEADIN. Print nothing if no symbolic name is found nearby.
540 Optionally also print source file and line number, if available.
541 DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
542 or to interpret it as a possible C++ name and convert it back to source
543 form. However note that DO_DEMANGLE can be overridden by the specific
544 settings of the demangle and asm_demangle variables. */
545
546void
fba45db2
KB
547print_address_symbolic (CORE_ADDR addr, struct ui_file *stream, int do_demangle,
548 char *leadin)
dfcd3bfb
JM
549{
550 char *name = NULL;
551 char *filename = NULL;
552 int unmapped = 0;
553 int offset = 0;
554 int line = 0;
555
2f9429ae
AC
556 /* throw away both name and filename */
557 struct cleanup *cleanup_chain = make_cleanup (free_current_contents, &name);
558 make_cleanup (free_current_contents, &filename);
dfcd3bfb
JM
559
560 if (build_address_symbolic (addr, do_demangle, &name, &offset, &filename, &line, &unmapped))
2f9429ae
AC
561 {
562 do_cleanups (cleanup_chain);
563 return;
564 }
dfcd3bfb
JM
565
566 fputs_filtered (leadin, stream);
567 if (unmapped)
568 fputs_filtered ("<*", stream);
569 else
570 fputs_filtered ("<", stream);
571 fputs_filtered (name, stream);
572 if (offset != 0)
573 fprintf_filtered (stream, "+%u", (unsigned int) offset);
574
575 /* Append source filename and line number if desired. Give specific
576 line # of this addr, if we have it; else line # of the nearest symbol. */
577 if (print_symbol_filename && filename != NULL)
578 {
579 if (line != -1)
580 fprintf_filtered (stream, " at %s:%d", filename, line);
581 else
582 fprintf_filtered (stream, " in %s", filename);
583 }
584 if (unmapped)
585 fputs_filtered ("*>", stream);
586 else
587 fputs_filtered (">", stream);
588
589 do_cleanups (cleanup_chain);
590}
591
592/* Given an address ADDR return all the elements needed to print the
593 address in a symbolic form. NAME can be mangled or not depending
594 on DO_DEMANGLE (and also on the asm_demangle global variable,
595 manipulated via ''set print asm-demangle''). Return 0 in case of
596 success, when all the info in the OUT paramters is valid. Return 1
597 otherwise. */
598int
599build_address_symbolic (CORE_ADDR addr, /* IN */
600 int do_demangle, /* IN */
601 char **name, /* OUT */
602 int *offset, /* OUT */
603 char **filename, /* OUT */
604 int *line, /* OUT */
605 int *unmapped) /* OUT */
c906108c
SS
606{
607 struct minimal_symbol *msymbol;
608 struct symbol *symbol;
609 struct symtab *symtab = 0;
610 CORE_ADDR name_location = 0;
c906108c 611 asection *section = 0;
dfcd3bfb
JM
612 char *name_temp = "";
613
614 /* Let's say it is unmapped. */
615 *unmapped = 0;
c906108c 616
dfcd3bfb
JM
617 /* Determine if the address is in an overlay, and whether it is
618 mapped. */
c906108c
SS
619 if (overlay_debugging)
620 {
621 section = find_pc_overlay (addr);
622 if (pc_in_unmapped_range (addr, section))
623 {
dfcd3bfb 624 *unmapped = 1;
c906108c
SS
625 addr = overlay_mapped_address (addr, section);
626 }
627 }
628
629 /* On some targets, add in extra "flag" bits to PC for
630 disassembly. This should ensure that "rounding errors" in
631 symbol addresses that are masked for disassembly favour the
632 the correct symbol. */
633
634#ifdef GDB_TARGET_UNMASK_DISAS_PC
635 addr = GDB_TARGET_UNMASK_DISAS_PC (addr);
636#endif
637
638 /* First try to find the address in the symbol table, then
639 in the minsyms. Take the closest one. */
640
641 /* This is defective in the sense that it only finds text symbols. So
642 really this is kind of pointless--we should make sure that the
643 minimal symbols have everything we need (by changing that we could
644 save some memory, but for many debug format--ELF/DWARF or
645 anything/stabs--it would be inconvenient to eliminate those minimal
646 symbols anyway). */
647 msymbol = lookup_minimal_symbol_by_pc_section (addr, section);
648 symbol = find_pc_sect_function (addr, section);
649
650 if (symbol)
651 {
652 name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol));
653 if (do_demangle)
dfcd3bfb 654 name_temp = SYMBOL_SOURCE_NAME (symbol);
c906108c 655 else
dfcd3bfb 656 name_temp = SYMBOL_LINKAGE_NAME (symbol);
c906108c
SS
657 }
658
659 if (msymbol != NULL)
660 {
661 if (SYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL)
662 {
663 /* The msymbol is closer to the address than the symbol;
664 use the msymbol instead. */
665 symbol = 0;
666 symtab = 0;
667 name_location = SYMBOL_VALUE_ADDRESS (msymbol);
668 if (do_demangle)
dfcd3bfb 669 name_temp = SYMBOL_SOURCE_NAME (msymbol);
c906108c 670 else
dfcd3bfb 671 name_temp = SYMBOL_LINKAGE_NAME (msymbol);
c906108c
SS
672 }
673 }
674 if (symbol == NULL && msymbol == NULL)
dfcd3bfb 675 return 1;
c906108c
SS
676
677 /* On some targets, mask out extra "flag" bits from PC for handsome
678 disassembly. */
679
680#ifdef GDB_TARGET_MASK_DISAS_PC
681 name_location = GDB_TARGET_MASK_DISAS_PC (name_location);
682 addr = GDB_TARGET_MASK_DISAS_PC (addr);
683#endif
684
685 /* If the nearest symbol is too far away, don't print anything symbolic. */
686
687 /* For when CORE_ADDR is larger than unsigned int, we do math in
688 CORE_ADDR. But when we detect unsigned wraparound in the
689 CORE_ADDR math, we ignore this test and print the offset,
690 because addr+max_symbolic_offset has wrapped through the end
691 of the address space back to the beginning, giving bogus comparison. */
692 if (addr > name_location + max_symbolic_offset
693 && name_location + max_symbolic_offset > name_location)
dfcd3bfb 694 return 1;
c906108c 695
dfcd3bfb
JM
696 *offset = addr - name_location;
697
698 *name = xstrdup (name_temp);
c906108c 699
c906108c
SS
700 if (print_symbol_filename)
701 {
702 struct symtab_and_line sal;
703
704 sal = find_pc_sect_line (addr, section, 0);
705
706 if (sal.symtab)
dfcd3bfb
JM
707 {
708 *filename = xstrdup (sal.symtab->filename);
709 *line = sal.line;
710 }
c906108c 711 else if (symtab && symbol && symbol->line)
dfcd3bfb
JM
712 {
713 *filename = xstrdup (symtab->filename);
714 *line = symbol->line;
715 }
c906108c 716 else if (symtab)
dfcd3bfb
JM
717 {
718 *filename = xstrdup (symtab->filename);
719 *line = -1;
720 }
c906108c 721 }
dfcd3bfb 722 return 0;
c906108c
SS
723}
724
c906108c
SS
725/* Print address ADDR on STREAM. USE_LOCAL means the same thing as for
726 print_longest. */
727void
fba45db2 728print_address_numeric (CORE_ADDR addr, int use_local, struct ui_file *stream)
c906108c 729{
c0d8fd9a 730 /* Truncate address to the size of a target address, avoiding shifts
e2ad119d 731 larger or equal than the width of a CORE_ADDR. The local
c0d8fd9a
MS
732 variable ADDR_BIT stops the compiler reporting a shift overflow
733 when it won't occur. */
e2ad119d
AC
734 /* NOTE: This assumes that the significant address information is
735 kept in the least significant bits of ADDR - the upper bits were
736 either zero or sign extended. Should ADDRESS_TO_POINTER() or
737 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
c0d8fd9a 738
52204a0b 739 int addr_bit = TARGET_ADDR_BIT;
c0d8fd9a 740
52204a0b
DT
741 if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT))
742 addr &= ((CORE_ADDR) 1 << addr_bit) - 1;
c906108c
SS
743 print_longest (stream, 'x', use_local, (ULONGEST) addr);
744}
745
746/* Print address ADDR symbolically on STREAM.
747 First print it as a number. Then perhaps print
748 <SYMBOL + OFFSET> after the number. */
749
750void
fba45db2 751print_address (CORE_ADDR addr, struct ui_file *stream)
c906108c
SS
752{
753 print_address_numeric (addr, 1, stream);
754 print_address_symbolic (addr, stream, asm_demangle, " ");
755}
756
757/* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
758 controls whether to print the symbolic name "raw" or demangled.
759 Global setting "addressprint" controls whether to print hex address
760 or not. */
761
762void
fba45db2 763print_address_demangle (CORE_ADDR addr, struct ui_file *stream, int do_demangle)
c906108c
SS
764{
765 if (addr == 0)
766 {
767 fprintf_filtered (stream, "0");
768 }
769 else if (addressprint)
770 {
771 print_address_numeric (addr, 1, stream);
772 print_address_symbolic (addr, stream, do_demangle, " ");
773 }
774 else
775 {
776 print_address_symbolic (addr, stream, do_demangle, "");
777 }
778}
779\f
780
781/* These are the types that $__ will get after an examine command of one
782 of these sizes. */
783
784static struct type *examine_i_type;
785
786static struct type *examine_b_type;
787static struct type *examine_h_type;
788static struct type *examine_w_type;
789static struct type *examine_g_type;
790
791/* Examine data at address ADDR in format FMT.
792 Fetch it from memory and print on gdb_stdout. */
793
794static void
fba45db2 795do_examine (struct format_data fmt, CORE_ADDR addr, asection *sect)
c906108c
SS
796{
797 register char format = 0;
798 register char size;
799 register int count = 1;
800 struct type *val_type = NULL;
801 register int i;
802 register int maxelts;
803
804 format = fmt.format;
805 size = fmt.size;
806 count = fmt.count;
807 next_address = addr;
808 next_section = sect;
809
810 /* String or instruction format implies fetch single bytes
811 regardless of the specified size. */
812 if (format == 's' || format == 'i')
813 size = 'b';
814
815 if (format == 'i')
816 val_type = examine_i_type;
817 else if (size == 'b')
818 val_type = examine_b_type;
819 else if (size == 'h')
820 val_type = examine_h_type;
821 else if (size == 'w')
822 val_type = examine_w_type;
823 else if (size == 'g')
824 val_type = examine_g_type;
825
826 maxelts = 8;
827 if (size == 'w')
828 maxelts = 4;
829 if (size == 'g')
830 maxelts = 2;
831 if (format == 's' || format == 'i')
832 maxelts = 1;
833
834 /* Print as many objects as specified in COUNT, at most maxelts per line,
835 with the address of the next one at the start of each line. */
836
837 while (count > 0)
838 {
839 QUIT;
840 print_address (next_address, gdb_stdout);
841 printf_filtered (":");
842 for (i = maxelts;
843 i > 0 && count > 0;
844 i--, count--)
845 {
846 printf_filtered ("\t");
847 /* Note that print_formatted sets next_address for the next
848 object. */
849 last_examine_address = next_address;
850
851 if (last_examine_value)
852 value_free (last_examine_value);
853
854 /* The value to be displayed is not fetched greedily.
c5aa993b
JM
855 Instead, to avoid the posibility of a fetched value not
856 being used, its retreval is delayed until the print code
857 uses it. When examining an instruction stream, the
858 disassembler will perform its own memory fetch using just
859 the address stored in LAST_EXAMINE_VALUE. FIXME: Should
860 the disassembler be modified so that LAST_EXAMINE_VALUE
861 is left with the byte sequence from the last complete
862 instruction fetched from memory? */
c906108c
SS
863 last_examine_value = value_at_lazy (val_type, next_address, sect);
864
865 if (last_examine_value)
866 release_value (last_examine_value);
867
2acceee2 868 print_formatted (last_examine_value, format, size, gdb_stdout);
c906108c
SS
869 }
870 printf_filtered ("\n");
871 gdb_flush (gdb_stdout);
872 }
873}
874\f
875static void
fba45db2 876validate_format (struct format_data fmt, char *cmdname)
c906108c
SS
877{
878 if (fmt.size != 0)
879 error ("Size letters are meaningless in \"%s\" command.", cmdname);
880 if (fmt.count != 1)
881 error ("Item count other than 1 is meaningless in \"%s\" command.",
882 cmdname);
883 if (fmt.format == 'i' || fmt.format == 's')
884 error ("Format letter \"%c\" is meaningless in \"%s\" command.",
885 fmt.format, cmdname);
886}
887
888/* Evaluate string EXP as an expression in the current language and
c5aa993b
JM
889 print the resulting value. EXP may contain a format specifier as the
890 first argument ("/x myvar" for example, to print myvar in hex).
891 */
c906108c
SS
892
893static void
fba45db2 894print_command_1 (char *exp, int inspect, int voidprint)
c906108c
SS
895{
896 struct expression *expr;
897 register struct cleanup *old_chain = 0;
898 register char format = 0;
3d6d86c6 899 struct value *val;
c906108c
SS
900 struct format_data fmt;
901 int cleanup = 0;
902
903 /* Pass inspect flag to the rest of the print routines in a global (sigh). */
904 inspect_it = inspect;
905
906 if (exp && *exp == '/')
907 {
908 exp++;
909 fmt = decode_format (&exp, last_format, 0);
910 validate_format (fmt, "print");
911 last_format = format = fmt.format;
912 }
913 else
914 {
915 fmt.count = 1;
916 fmt.format = 0;
917 fmt.size = 0;
918 }
919
920 if (exp && *exp)
921 {
c906108c
SS
922 struct type *type;
923 expr = parse_expression (exp);
c13c43fd 924 old_chain = make_cleanup (free_current_contents, &expr);
c906108c
SS
925 cleanup = 1;
926 val = evaluate_expression (expr);
c906108c
SS
927 }
928 else
929 val = access_value_history (0);
930
931 if (voidprint || (val && VALUE_TYPE (val) &&
c5aa993b 932 TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_VOID))
c906108c
SS
933 {
934 int histindex = record_latest_value (val);
935
936 if (histindex >= 0)
937 annotate_value_history_begin (histindex, VALUE_TYPE (val));
938 else
939 annotate_value_begin (VALUE_TYPE (val));
940
941 if (inspect)
942 printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"", exp, histindex);
c5aa993b
JM
943 else if (histindex >= 0)
944 printf_filtered ("$%d = ", histindex);
c906108c
SS
945
946 if (histindex >= 0)
947 annotate_value_history_value ();
948
2acceee2 949 print_formatted (val, format, fmt.size, gdb_stdout);
c906108c
SS
950 printf_filtered ("\n");
951
952 if (histindex >= 0)
953 annotate_value_history_end ();
954 else
955 annotate_value_end ();
956
957 if (inspect)
c5aa993b 958 printf_unfiltered ("\") )\030");
c906108c
SS
959 }
960
961 if (cleanup)
962 do_cleanups (old_chain);
c5aa993b 963 inspect_it = 0; /* Reset print routines to normal */
c906108c
SS
964}
965
966/* ARGSUSED */
967static void
fba45db2 968print_command (char *exp, int from_tty)
c906108c
SS
969{
970 print_command_1 (exp, 0, 1);
971}
972
973/* Same as print, except in epoch, it gets its own window */
974/* ARGSUSED */
975static void
fba45db2 976inspect_command (char *exp, int from_tty)
c906108c
SS
977{
978 extern int epoch_interface;
979
980 print_command_1 (exp, epoch_interface, 1);
981}
982
983/* Same as print, except it doesn't print void results. */
984/* ARGSUSED */
985static void
fba45db2 986call_command (char *exp, int from_tty)
c906108c
SS
987{
988 print_command_1 (exp, 0, 0);
989}
990
991/* ARGSUSED */
992void
fba45db2 993output_command (char *exp, int from_tty)
c906108c
SS
994{
995 struct expression *expr;
996 register struct cleanup *old_chain;
997 register char format = 0;
3d6d86c6 998 struct value *val;
c906108c
SS
999 struct format_data fmt;
1000
1001 if (exp && *exp == '/')
1002 {
1003 exp++;
1004 fmt = decode_format (&exp, 0, 0);
1005 validate_format (fmt, "output");
1006 format = fmt.format;
1007 }
1008
1009 expr = parse_expression (exp);
c13c43fd 1010 old_chain = make_cleanup (free_current_contents, &expr);
c906108c
SS
1011
1012 val = evaluate_expression (expr);
1013
1014 annotate_value_begin (VALUE_TYPE (val));
1015
2acceee2 1016 print_formatted (val, format, fmt.size, gdb_stdout);
c906108c
SS
1017
1018 annotate_value_end ();
1019
2acceee2
JM
1020 wrap_here ("");
1021 gdb_flush (gdb_stdout);
1022
c906108c
SS
1023 do_cleanups (old_chain);
1024}
1025
1026/* ARGSUSED */
1027static void
fba45db2 1028set_command (char *exp, int from_tty)
c906108c
SS
1029{
1030 struct expression *expr = parse_expression (exp);
c13c43fd
PDM
1031 register struct cleanup *old_chain =
1032 make_cleanup (free_current_contents, &expr);
c906108c
SS
1033 evaluate_expression (expr);
1034 do_cleanups (old_chain);
1035}
1036
1037/* ARGSUSED */
1038static void
fba45db2 1039sym_info (char *arg, int from_tty)
c906108c
SS
1040{
1041 struct minimal_symbol *msymbol;
c5aa993b
JM
1042 struct objfile *objfile;
1043 struct obj_section *osect;
1044 asection *sect;
1045 CORE_ADDR addr, sect_addr;
1046 int matches = 0;
1047 unsigned int offset;
c906108c
SS
1048
1049 if (!arg)
1050 error_no_arg ("address");
1051
1052 addr = parse_and_eval_address (arg);
1053 ALL_OBJSECTIONS (objfile, osect)
c5aa993b
JM
1054 {
1055 sect = osect->the_bfd_section;
1056 sect_addr = overlay_mapped_address (addr, sect);
c906108c 1057
c5aa993b
JM
1058 if (osect->addr <= sect_addr && sect_addr < osect->endaddr &&
1059 (msymbol = lookup_minimal_symbol_by_pc_section (sect_addr, sect)))
1060 {
1061 matches = 1;
1062 offset = sect_addr - SYMBOL_VALUE_ADDRESS (msymbol);
1063 if (offset)
1064 printf_filtered ("%s + %u in ",
1065 SYMBOL_SOURCE_NAME (msymbol), offset);
1066 else
1067 printf_filtered ("%s in ",
1068 SYMBOL_SOURCE_NAME (msymbol));
1069 if (pc_in_unmapped_range (addr, sect))
1070 printf_filtered ("load address range of ");
1071 if (section_is_overlay (sect))
1072 printf_filtered ("%s overlay ",
1073 section_is_mapped (sect) ? "mapped" : "unmapped");
1074 printf_filtered ("section %s", sect->name);
1075 printf_filtered ("\n");
1076 }
1077 }
c906108c
SS
1078 if (matches == 0)
1079 printf_filtered ("No symbol matches %s.\n", arg);
1080}
1081
1082/* ARGSUSED */
1083static void
fba45db2 1084address_info (char *exp, int from_tty)
c906108c
SS
1085{
1086 register struct symbol *sym;
1087 register struct minimal_symbol *msymbol;
1088 register long val;
1089 register long basereg;
1090 asection *section;
1091 CORE_ADDR load_addr;
1092 int is_a_field_of_this; /* C++: lookup_symbol sets this to nonzero
1093 if exp is a field of `this'. */
1094
1095 if (exp == 0)
1096 error ("Argument required.");
1097
ae767bfb 1098 sym = lookup_symbol (exp, get_selected_block (0), VAR_NAMESPACE,
c5aa993b 1099 &is_a_field_of_this, (struct symtab **) NULL);
c906108c
SS
1100 if (sym == NULL)
1101 {
1102 if (is_a_field_of_this)
1103 {
1104 printf_filtered ("Symbol \"");
1105 fprintf_symbol_filtered (gdb_stdout, exp,
1106 current_language->la_language, DMGL_ANSI);
e2b23ee9
AF
1107 printf_filtered ("\" is a field of the local class variable ");
1108 if (current_language->la_language == language_objc)
1109 printf_filtered ("'self'\n"); /* ObjC equivalent of "this" */
1110 else
1111 printf_filtered ("'this'\n");
c906108c
SS
1112 return;
1113 }
1114
1115 msymbol = lookup_minimal_symbol (exp, NULL, NULL);
1116
1117 if (msymbol != NULL)
1118 {
1119 load_addr = SYMBOL_VALUE_ADDRESS (msymbol);
1120
1121 printf_filtered ("Symbol \"");
1122 fprintf_symbol_filtered (gdb_stdout, exp,
1123 current_language->la_language, DMGL_ANSI);
1124 printf_filtered ("\" is at ");
1125 print_address_numeric (load_addr, 1, gdb_stdout);
1126 printf_filtered (" in a file compiled without debugging");
1127 section = SYMBOL_BFD_SECTION (msymbol);
1128 if (section_is_overlay (section))
1129 {
1130 load_addr = overlay_unmapped_address (load_addr, section);
1131 printf_filtered (",\n -- loaded at ");
1132 print_address_numeric (load_addr, 1, gdb_stdout);
1133 printf_filtered (" in overlay section %s", section->name);
1134 }
1135 printf_filtered (".\n");
1136 }
1137 else
1138 error ("No symbol \"%s\" in current context.", exp);
1139 return;
1140 }
1141
1142 printf_filtered ("Symbol \"");
1143 fprintf_symbol_filtered (gdb_stdout, SYMBOL_NAME (sym),
1144 current_language->la_language, DMGL_ANSI);
1145 printf_filtered ("\" is ");
c5aa993b 1146 val = SYMBOL_VALUE (sym);
c906108c
SS
1147 basereg = SYMBOL_BASEREG (sym);
1148 section = SYMBOL_BFD_SECTION (sym);
1149
1150 switch (SYMBOL_CLASS (sym))
1151 {
1152 case LOC_CONST:
1153 case LOC_CONST_BYTES:
1154 printf_filtered ("constant");
1155 break;
1156
1157 case LOC_LABEL:
1158 printf_filtered ("a label at address ");
c5aa993b 1159 print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym),
c906108c
SS
1160 1, gdb_stdout);
1161 if (section_is_overlay (section))
1162 {
1163 load_addr = overlay_unmapped_address (load_addr, section);
1164 printf_filtered (",\n -- loaded at ");
1165 print_address_numeric (load_addr, 1, gdb_stdout);
1166 printf_filtered (" in overlay section %s", section->name);
1167 }
1168 break;
1169
1170 case LOC_REGISTER:
1171 printf_filtered ("a variable in register %s", REGISTER_NAME (val));
1172 break;
1173
1174 case LOC_STATIC:
1175 printf_filtered ("static storage at address ");
c5aa993b 1176 print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym),
c906108c
SS
1177 1, gdb_stdout);
1178 if (section_is_overlay (section))
1179 {
1180 load_addr = overlay_unmapped_address (load_addr, section);
1181 printf_filtered (",\n -- loaded at ");
1182 print_address_numeric (load_addr, 1, gdb_stdout);
1183 printf_filtered (" in overlay section %s", section->name);
1184 }
1185 break;
1186
1187 case LOC_INDIRECT:
1188 printf_filtered ("external global (indirect addressing), at address *(");
1189 print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym),
1190 1, gdb_stdout);
1191 printf_filtered (")");
1192 if (section_is_overlay (section))
1193 {
1194 load_addr = overlay_unmapped_address (load_addr, section);
1195 printf_filtered (",\n -- loaded at ");
1196 print_address_numeric (load_addr, 1, gdb_stdout);
1197 printf_filtered (" in overlay section %s", section->name);
1198 }
1199 break;
1200
1201 case LOC_REGPARM:
1202 printf_filtered ("an argument in register %s", REGISTER_NAME (val));
1203 break;
1204
1205 case LOC_REGPARM_ADDR:
1206 printf_filtered ("address of an argument in register %s", REGISTER_NAME (val));
1207 break;
1208
1209 case LOC_ARG:
1210 printf_filtered ("an argument at offset %ld", val);
1211 break;
1212
1213 case LOC_LOCAL_ARG:
1214 printf_filtered ("an argument at frame offset %ld", val);
1215 break;
1216
1217 case LOC_LOCAL:
1218 printf_filtered ("a local variable at frame offset %ld", val);
1219 break;
1220
1221 case LOC_REF_ARG:
1222 printf_filtered ("a reference argument at offset %ld", val);
1223 break;
1224
1225 case LOC_BASEREG:
1226 printf_filtered ("a variable at offset %ld from register %s",
c5aa993b 1227 val, REGISTER_NAME (basereg));
c906108c
SS
1228 break;
1229
1230 case LOC_BASEREG_ARG:
1231 printf_filtered ("an argument at offset %ld from register %s",
c5aa993b 1232 val, REGISTER_NAME (basereg));
c906108c
SS
1233 break;
1234
1235 case LOC_TYPEDEF:
1236 printf_filtered ("a typedef");
1237 break;
1238
1239 case LOC_BLOCK:
1240 printf_filtered ("a function at address ");
1241#ifdef GDB_TARGET_MASK_DISAS_PC
1242 print_address_numeric
c5aa993b 1243 (load_addr = GDB_TARGET_MASK_DISAS_PC (BLOCK_START (SYMBOL_BLOCK_VALUE (sym))),
c906108c
SS
1244 1, gdb_stdout);
1245#else
c5aa993b 1246 print_address_numeric (load_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)),
c906108c
SS
1247 1, gdb_stdout);
1248#endif
1249 if (section_is_overlay (section))
1250 {
1251 load_addr = overlay_unmapped_address (load_addr, section);
1252 printf_filtered (",\n -- loaded at ");
1253 print_address_numeric (load_addr, 1, gdb_stdout);
1254 printf_filtered (" in overlay section %s", section->name);
1255 }
1256 break;
1257
1258 case LOC_UNRESOLVED:
1259 {
1260 struct minimal_symbol *msym;
1261
1262 msym = lookup_minimal_symbol (SYMBOL_NAME (sym), NULL, NULL);
1263 if (msym == NULL)
1264 printf_filtered ("unresolved");
1265 else
1266 {
1267 section = SYMBOL_BFD_SECTION (msym);
1268 printf_filtered ("static storage at address ");
c5aa993b 1269 print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (msym),
c906108c
SS
1270 1, gdb_stdout);
1271 if (section_is_overlay (section))
1272 {
1273 load_addr = overlay_unmapped_address (load_addr, section);
1274 printf_filtered (",\n -- loaded at ");
1275 print_address_numeric (load_addr, 1, gdb_stdout);
1276 printf_filtered (" in overlay section %s", section->name);
1277 }
1278 }
1279 }
1280 break;
1281
1282 case LOC_THREAD_LOCAL_STATIC:
1283 printf_filtered (
c5aa993b
JM
1284 "a thread-local variable at offset %ld from the thread base register %s",
1285 val, REGISTER_NAME (basereg));
c906108c
SS
1286 break;
1287
1288 case LOC_OPTIMIZED_OUT:
1289 printf_filtered ("optimized out");
1290 break;
c5aa993b 1291
c906108c
SS
1292 default:
1293 printf_filtered ("of unknown (botched) type");
1294 break;
1295 }
1296 printf_filtered (".\n");
1297}
1298\f
1299void
fba45db2 1300x_command (char *exp, int from_tty)
c906108c
SS
1301{
1302 struct expression *expr;
1303 struct format_data fmt;
1304 struct cleanup *old_chain;
1305 struct value *val;
1306
1307 fmt.format = last_format;
1308 fmt.size = last_size;
1309 fmt.count = 1;
1310
1311 if (exp && *exp == '/')
1312 {
1313 exp++;
1314 fmt = decode_format (&exp, last_format, last_size);
1315 }
1316
1317 /* If we have an expression, evaluate it and use it as the address. */
1318
1319 if (exp != 0 && *exp != 0)
1320 {
1321 expr = parse_expression (exp);
1322 /* Cause expression not to be there any more
c5aa993b
JM
1323 if this command is repeated with Newline.
1324 But don't clobber a user-defined command's definition. */
c906108c
SS
1325 if (from_tty)
1326 *exp = 0;
c13c43fd 1327 old_chain = make_cleanup (free_current_contents, &expr);
c906108c
SS
1328 val = evaluate_expression (expr);
1329 if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_REF)
1330 val = value_ind (val);
1331 /* In rvalue contexts, such as this, functions are coerced into
c5aa993b 1332 pointers to functions. This makes "x/i main" work. */
c0d8fd9a
MS
1333 if (/* last_format == 'i' && */
1334 TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_FUNC
c5aa993b 1335 && VALUE_LVAL (val) == lval_memory)
c906108c
SS
1336 next_address = VALUE_ADDRESS (val);
1337 else
1aa20aa8 1338 next_address = value_as_address (val);
c906108c
SS
1339 if (VALUE_BFD_SECTION (val))
1340 next_section = VALUE_BFD_SECTION (val);
1341 do_cleanups (old_chain);
1342 }
1343
1344 do_examine (fmt, next_address, next_section);
1345
1346 /* If the examine succeeds, we remember its size and format for next time. */
1347 last_size = fmt.size;
1348 last_format = fmt.format;
1349
1350 /* Set a couple of internal variables if appropriate. */
1351 if (last_examine_value)
1352 {
1353 /* Make last address examined available to the user as $_. Use
c5aa993b 1354 the correct pointer type. */
4478b372
JB
1355 struct type *pointer_type
1356 = lookup_pointer_type (VALUE_TYPE (last_examine_value));
c906108c 1357 set_internalvar (lookup_internalvar ("_"),
4478b372
JB
1358 value_from_pointer (pointer_type,
1359 last_examine_address));
c5aa993b
JM
1360
1361 /* Make contents of last address examined available to the user as $__. */
c906108c
SS
1362 /* If the last value has not been fetched from memory then don't
1363 fetch it now - instead mark it by voiding the $__ variable. */
1364 if (VALUE_LAZY (last_examine_value))
1365 set_internalvar (lookup_internalvar ("__"),
1366 allocate_value (builtin_type_void));
1367 else
1368 set_internalvar (lookup_internalvar ("__"), last_examine_value);
1369 }
1370}
c906108c 1371\f
c5aa993b 1372
c906108c
SS
1373/* Add an expression to the auto-display chain.
1374 Specify the expression. */
1375
1376static void
fba45db2 1377display_command (char *exp, int from_tty)
c906108c
SS
1378{
1379 struct format_data fmt;
1380 register struct expression *expr;
1381 register struct display *new;
1382 int display_it = 1;
1383
1384#if defined(TUI)
1385 if (tui_version && *exp == '$')
5ecb1806 1386 display_it = (tui_set_layout (exp) == TUI_FAILURE);
c906108c
SS
1387#endif
1388
1389 if (display_it)
1390 {
1391 if (exp == 0)
1392 {
1393 do_displays ();
1394 return;
1395 }
1396
1397 if (*exp == '/')
1398 {
1399 exp++;
1400 fmt = decode_format (&exp, 0, 0);
1401 if (fmt.size && fmt.format == 0)
1402 fmt.format = 'x';
1403 if (fmt.format == 'i' || fmt.format == 's')
1404 fmt.size = 'b';
1405 }
1406 else
1407 {
1408 fmt.format = 0;
1409 fmt.size = 0;
1410 fmt.count = 0;
1411 }
1412
1413 innermost_block = 0;
1414 expr = parse_expression (exp);
1415
1416 new = (struct display *) xmalloc (sizeof (struct display));
1417
1418 new->exp = expr;
1419 new->block = innermost_block;
1420 new->next = display_chain;
1421 new->number = ++display_number;
1422 new->format = fmt;
b5de0fa7 1423 new->enabled_p = 1;
c906108c
SS
1424 display_chain = new;
1425
1426 if (from_tty && target_has_execution)
1427 do_one_display (new);
1428
1429 dont_repeat ();
1430 }
1431}
1432
1433static void
fba45db2 1434free_display (struct display *d)
c906108c 1435{
b8c9b27d
KB
1436 xfree (d->exp);
1437 xfree (d);
c906108c
SS
1438}
1439
1440/* Clear out the display_chain.
1441 Done when new symtabs are loaded, since this invalidates
1442 the types stored in many expressions. */
1443
1444void
fba45db2 1445clear_displays (void)
c906108c
SS
1446{
1447 register struct display *d;
1448
1449 while ((d = display_chain) != NULL)
1450 {
b8c9b27d 1451 xfree (d->exp);
c906108c 1452 display_chain = d->next;
b8c9b27d 1453 xfree (d);
c906108c
SS
1454 }
1455}
1456
1457/* Delete the auto-display number NUM. */
1458
1459static void
fba45db2 1460delete_display (int num)
c906108c
SS
1461{
1462 register struct display *d1, *d;
1463
1464 if (!display_chain)
1465 error ("No display number %d.", num);
1466
1467 if (display_chain->number == num)
1468 {
1469 d1 = display_chain;
1470 display_chain = d1->next;
1471 free_display (d1);
1472 }
1473 else
c5aa993b 1474 for (d = display_chain;; d = d->next)
c906108c
SS
1475 {
1476 if (d->next == 0)
1477 error ("No display number %d.", num);
1478 if (d->next->number == num)
1479 {
1480 d1 = d->next;
1481 d->next = d1->next;
1482 free_display (d1);
1483 break;
1484 }
1485 }
1486}
1487
1488/* Delete some values from the auto-display chain.
1489 Specify the element numbers. */
1490
1491static void
fba45db2 1492undisplay_command (char *args, int from_tty)
c906108c
SS
1493{
1494 register char *p = args;
1495 register char *p1;
1496 register int num;
1497
1498 if (args == 0)
1499 {
1500 if (query ("Delete all auto-display expressions? "))
1501 clear_displays ();
1502 dont_repeat ();
1503 return;
1504 }
1505
1506 while (*p)
1507 {
1508 p1 = p;
c5aa993b
JM
1509 while (*p1 >= '0' && *p1 <= '9')
1510 p1++;
c906108c
SS
1511 if (*p1 && *p1 != ' ' && *p1 != '\t')
1512 error ("Arguments must be display numbers.");
1513
1514 num = atoi (p);
1515
1516 delete_display (num);
1517
1518 p = p1;
c5aa993b
JM
1519 while (*p == ' ' || *p == '\t')
1520 p++;
c906108c
SS
1521 }
1522 dont_repeat ();
1523}
1524
1525/* Display a single auto-display.
1526 Do nothing if the display cannot be printed in the current context,
1527 or if the display is disabled. */
1528
1529static void
fba45db2 1530do_one_display (struct display *d)
c906108c
SS
1531{
1532 int within_current_scope;
1533
b5de0fa7 1534 if (d->enabled_p == 0)
c906108c
SS
1535 return;
1536
1537 if (d->block)
ae767bfb 1538 within_current_scope = contained_in (get_selected_block (0), d->block);
c906108c
SS
1539 else
1540 within_current_scope = 1;
1541 if (!within_current_scope)
1542 return;
1543
1544 current_display_number = d->number;
1545
1546 annotate_display_begin ();
1547 printf_filtered ("%d", d->number);
1548 annotate_display_number_end ();
1549 printf_filtered (": ");
1550 if (d->format.size)
1551 {
1552 CORE_ADDR addr;
3d6d86c6 1553 struct value *val;
c906108c
SS
1554
1555 annotate_display_format ();
1556
1557 printf_filtered ("x/");
1558 if (d->format.count != 1)
1559 printf_filtered ("%d", d->format.count);
1560 printf_filtered ("%c", d->format.format);
1561 if (d->format.format != 'i' && d->format.format != 's')
1562 printf_filtered ("%c", d->format.size);
1563 printf_filtered (" ");
1564
1565 annotate_display_expression ();
1566
1567 print_expression (d->exp, gdb_stdout);
1568 annotate_display_expression_end ();
1569
1570 if (d->format.count != 1)
1571 printf_filtered ("\n");
1572 else
1573 printf_filtered (" ");
c5aa993b 1574
c906108c 1575 val = evaluate_expression (d->exp);
1aa20aa8 1576 addr = value_as_address (val);
c906108c
SS
1577 if (d->format.format == 'i')
1578 addr = ADDR_BITS_REMOVE (addr);
1579
1580 annotate_display_value ();
1581
1582 do_examine (d->format, addr, VALUE_BFD_SECTION (val));
1583 }
1584 else
1585 {
1586 annotate_display_format ();
1587
1588 if (d->format.format)
1589 printf_filtered ("/%c ", d->format.format);
1590
1591 annotate_display_expression ();
1592
1593 print_expression (d->exp, gdb_stdout);
1594 annotate_display_expression_end ();
1595
1596 printf_filtered (" = ");
1597
1598 annotate_display_expression ();
1599
1600 print_formatted (evaluate_expression (d->exp),
2acceee2 1601 d->format.format, d->format.size, gdb_stdout);
c906108c
SS
1602 printf_filtered ("\n");
1603 }
1604
1605 annotate_display_end ();
1606
1607 gdb_flush (gdb_stdout);
1608 current_display_number = -1;
1609}
1610
1611/* Display all of the values on the auto-display chain which can be
1612 evaluated in the current scope. */
1613
1614void
fba45db2 1615do_displays (void)
c906108c
SS
1616{
1617 register struct display *d;
1618
1619 for (d = display_chain; d; d = d->next)
1620 do_one_display (d);
1621}
1622
1623/* Delete the auto-display which we were in the process of displaying.
1624 This is done when there is an error or a signal. */
1625
1626void
fba45db2 1627disable_display (int num)
c906108c
SS
1628{
1629 register struct display *d;
1630
1631 for (d = display_chain; d; d = d->next)
1632 if (d->number == num)
1633 {
b5de0fa7 1634 d->enabled_p = 0;
c906108c
SS
1635 return;
1636 }
1637 printf_unfiltered ("No display number %d.\n", num);
1638}
c5aa993b 1639
c906108c 1640void
fba45db2 1641disable_current_display (void)
c906108c
SS
1642{
1643 if (current_display_number >= 0)
1644 {
1645 disable_display (current_display_number);
1646 fprintf_unfiltered (gdb_stderr, "Disabling display %d to avoid infinite recursion.\n",
c5aa993b 1647 current_display_number);
c906108c
SS
1648 }
1649 current_display_number = -1;
1650}
1651
1652static void
fba45db2 1653display_info (char *ignore, int from_tty)
c906108c
SS
1654{
1655 register struct display *d;
1656
1657 if (!display_chain)
1658 printf_unfiltered ("There are no auto-display expressions now.\n");
1659 else
c5aa993b 1660 printf_filtered ("Auto-display expressions now in effect:\n\
c906108c
SS
1661Num Enb Expression\n");
1662
1663 for (d = display_chain; d; d = d->next)
1664 {
b5de0fa7 1665 printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]);
c906108c
SS
1666 if (d->format.size)
1667 printf_filtered ("/%d%c%c ", d->format.count, d->format.size,
c5aa993b 1668 d->format.format);
c906108c
SS
1669 else if (d->format.format)
1670 printf_filtered ("/%c ", d->format.format);
1671 print_expression (d->exp, gdb_stdout);
ae767bfb 1672 if (d->block && !contained_in (get_selected_block (0), d->block))
c906108c
SS
1673 printf_filtered (" (cannot be evaluated in the current context)");
1674 printf_filtered ("\n");
1675 gdb_flush (gdb_stdout);
1676 }
1677}
1678
1679static void
fba45db2 1680enable_display (char *args, int from_tty)
c906108c
SS
1681{
1682 register char *p = args;
1683 register char *p1;
1684 register int num;
1685 register struct display *d;
1686
1687 if (p == 0)
1688 {
1689 for (d = display_chain; d; d = d->next)
b5de0fa7 1690 d->enabled_p = 1;
c906108c
SS
1691 }
1692 else
1693 while (*p)
1694 {
1695 p1 = p;
1696 while (*p1 >= '0' && *p1 <= '9')
1697 p1++;
1698 if (*p1 && *p1 != ' ' && *p1 != '\t')
1699 error ("Arguments must be display numbers.");
c5aa993b 1700
c906108c 1701 num = atoi (p);
c5aa993b 1702
c906108c
SS
1703 for (d = display_chain; d; d = d->next)
1704 if (d->number == num)
1705 {
b5de0fa7 1706 d->enabled_p = 1;
c906108c
SS
1707 goto win;
1708 }
1709 printf_unfiltered ("No display number %d.\n", num);
1710 win:
1711 p = p1;
1712 while (*p == ' ' || *p == '\t')
1713 p++;
1714 }
1715}
1716
1717/* ARGSUSED */
1718static void
fba45db2 1719disable_display_command (char *args, int from_tty)
c906108c
SS
1720{
1721 register char *p = args;
1722 register char *p1;
1723 register struct display *d;
1724
1725 if (p == 0)
1726 {
1727 for (d = display_chain; d; d = d->next)
b5de0fa7 1728 d->enabled_p = 0;
c906108c
SS
1729 }
1730 else
1731 while (*p)
1732 {
1733 p1 = p;
1734 while (*p1 >= '0' && *p1 <= '9')
1735 p1++;
1736 if (*p1 && *p1 != ' ' && *p1 != '\t')
1737 error ("Arguments must be display numbers.");
c5aa993b 1738
c906108c
SS
1739 disable_display (atoi (p));
1740
1741 p = p1;
1742 while (*p == ' ' || *p == '\t')
1743 p++;
1744 }
1745}
c906108c 1746\f
c5aa993b 1747
c906108c
SS
1748/* Print the value in stack frame FRAME of a variable
1749 specified by a struct symbol. */
1750
1751void
fba45db2
KB
1752print_variable_value (struct symbol *var, struct frame_info *frame,
1753 struct ui_file *stream)
c906108c 1754{
3d6d86c6 1755 struct value *val = read_var_value (var, frame);
c906108c
SS
1756
1757 value_print (val, stream, 0, Val_pretty_default);
1758}
1759
1760/* Print the arguments of a stack frame, given the function FUNC
1761 running in that frame (as a symbol), the info on the frame,
1762 and the number of args according to the stack frame (or -1 if unknown). */
1763
1764/* References here and elsewhere to "number of args according to the
1765 stack frame" appear in all cases to refer to "number of ints of args
1766 according to the stack frame". At least for VAX, i386, isi. */
1767
1768void
fba45db2
KB
1769print_frame_args (struct symbol *func, struct frame_info *fi, int num,
1770 struct ui_file *stream)
c906108c
SS
1771{
1772 struct block *b = NULL;
c906108c
SS
1773 int first = 1;
1774 register int i;
1775 register struct symbol *sym;
3d6d86c6 1776 struct value *val;
c906108c
SS
1777 /* Offset of next stack argument beyond the one we have seen that is
1778 at the highest offset.
1779 -1 if we haven't come to a stack argument yet. */
1780 long highest_offset = -1;
1781 int arg_size;
1782 /* Number of ints of arguments that we have printed so far. */
1783 int args_printed = 0;
d493eb33 1784 struct cleanup *old_chain, *list_chain;
8b93c638
JM
1785 struct ui_stream *stb;
1786
1787 stb = ui_out_stream_new (uiout);
b02eeafb 1788 old_chain = make_cleanup_ui_out_stream_delete (stb);
c906108c
SS
1789
1790 if (func)
1791 {
1792 b = SYMBOL_BLOCK_VALUE (func);
261397f8
DJ
1793 /* Function blocks are order sensitive, and thus should not be
1794 hashed. */
1795 gdb_assert (BLOCK_HASHTABLE (b) == 0);
1796
e88c90f2 1797 ALL_BLOCK_SYMBOLS (b, i, sym)
55159471
DJ
1798 {
1799 QUIT;
c906108c 1800
55159471
DJ
1801 /* Keep track of the highest stack argument offset seen, and
1802 skip over any kinds of symbols we don't care about. */
c906108c 1803
55159471
DJ
1804 switch (SYMBOL_CLASS (sym))
1805 {
1806 case LOC_ARG:
1807 case LOC_REF_ARG:
1808 {
1809 long current_offset = SYMBOL_VALUE (sym);
1810 arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym));
1811
1812 /* Compute address of next argument by adding the size of
1813 this argument and rounding to an int boundary. */
1814 current_offset =
1815 ((current_offset + arg_size + sizeof (int) - 1)
1816 & ~(sizeof (int) - 1));
1817
1818 /* If this is the highest offset seen yet, set highest_offset. */
1819 if (highest_offset == -1
1820 || (current_offset > highest_offset))
1821 highest_offset = current_offset;
1822
1823 /* Add the number of ints we're about to print to args_printed. */
1824 args_printed += (arg_size + sizeof (int) - 1) / sizeof (int);
1825 }
c906108c 1826
55159471
DJ
1827 /* We care about types of symbols, but don't need to keep track of
1828 stack offsets in them. */
1829 case LOC_REGPARM:
1830 case LOC_REGPARM_ADDR:
1831 case LOC_LOCAL_ARG:
1832 case LOC_BASEREG_ARG:
1833 break;
c906108c 1834
55159471
DJ
1835 /* Other types of symbols we just skip over. */
1836 default:
1837 continue;
1838 }
1839
1840 /* We have to look up the symbol because arguments can have
1841 two entries (one a parameter, one a local) and the one we
1842 want is the local, which lookup_symbol will find for us.
1843 This includes gcc1 (not gcc2) on the sparc when passing a
1844 small structure and gcc2 when the argument type is float
1845 and it is passed as a double and converted to float by
1846 the prologue (in the latter case the type of the LOC_ARG
1847 symbol is double and the type of the LOC_LOCAL symbol is
1848 float). */
1849 /* But if the parameter name is null, don't try it.
1850 Null parameter names occur on the RS/6000, for traceback tables.
1851 FIXME, should we even print them? */
1852
1853 if (*SYMBOL_NAME (sym))
c906108c 1854 {
55159471
DJ
1855 struct symbol *nsym;
1856 nsym = lookup_symbol
1857 (SYMBOL_NAME (sym),
1858 b, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL);
1859 if (SYMBOL_CLASS (nsym) == LOC_REGISTER)
1860 {
1861 /* There is a LOC_ARG/LOC_REGISTER pair. This means that
1862 it was passed on the stack and loaded into a register,
1863 or passed in a register and stored in a stack slot.
1864 GDB 3.x used the LOC_ARG; GDB 4.0-4.11 used the LOC_REGISTER.
1865
1866 Reasons for using the LOC_ARG:
1867 (1) because find_saved_registers may be slow for remote
1868 debugging,
1869 (2) because registers are often re-used and stack slots
1870 rarely (never?) are. Therefore using the stack slot is
1871 much less likely to print garbage.
1872
1873 Reasons why we might want to use the LOC_REGISTER:
1874 (1) So that the backtrace prints the same value as
1875 "print foo". I see no compelling reason why this needs
1876 to be the case; having the backtrace print the value which
1877 was passed in, and "print foo" print the value as modified
1878 within the called function, makes perfect sense to me.
1879
1880 Additional note: It might be nice if "info args" displayed
1881 both values.
1882 One more note: There is a case with sparc structure passing
1883 where we need to use the LOC_REGISTER, but this is dealt with
1884 by creating a single LOC_REGPARM in symbol reading. */
1885
1886 /* Leave sym (the LOC_ARG) alone. */
1887 ;
1888 }
1889 else
1890 sym = nsym;
c906108c 1891 }
c906108c 1892
55159471
DJ
1893 /* Print the current arg. */
1894 if (!first)
1895 ui_out_text (uiout, ", ");
1896 ui_out_wrap_hint (uiout, " ");
1897
1898 annotate_arg_begin ();
1899
1900 list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
1901 fprintf_symbol_filtered (stb->stream, SYMBOL_SOURCE_NAME (sym),
1902 SYMBOL_LANGUAGE (sym), DMGL_PARAMS | DMGL_ANSI);
1903 ui_out_field_stream (uiout, "name", stb);
1904 annotate_arg_name_end ();
1905 ui_out_text (uiout, "=");
c906108c 1906
55159471
DJ
1907 /* Avoid value_print because it will deref ref parameters. We just
1908 want to print their addresses. Print ??? for args whose address
1909 we do not know. We pass 2 as "recurse" to val_print because our
1910 standard indentation here is 4 spaces, and val_print indents
1911 2 for each recurse. */
1912 val = read_var_value (sym, fi);
c906108c 1913
55159471 1914 annotate_arg_value (val == NULL ? NULL : VALUE_TYPE (val));
c906108c 1915
55159471
DJ
1916 if (val)
1917 {
55159471
DJ
1918 val_print (VALUE_TYPE (val), VALUE_CONTENTS (val), 0,
1919 VALUE_ADDRESS (val),
1920 stb->stream, 0, 0, 2, Val_no_prettyprint);
1921 ui_out_field_stream (uiout, "value", stb);
1922 }
1923 else
1924 ui_out_text (uiout, "???");
8b93c638 1925
55159471
DJ
1926 /* Invoke ui_out_tuple_end. */
1927 do_cleanups (list_chain);
c906108c 1928
55159471 1929 annotate_arg_end ();
c906108c 1930
55159471
DJ
1931 first = 0;
1932 }
c906108c
SS
1933 }
1934
1935 /* Don't print nameless args in situations where we don't know
1936 enough about the stack to find them. */
1937 if (num != -1)
1938 {
1939 long start;
1940
1941 if (highest_offset == -1)
1942 start = FRAME_ARGS_SKIP;
1943 else
1944 start = highest_offset;
1945
1946 print_frame_nameless_args (fi, start, num - args_printed,
1947 first, stream);
1948 }
8b93c638 1949 do_cleanups (old_chain);
c906108c
SS
1950}
1951
1952/* Print nameless args on STREAM.
1953 FI is the frameinfo for this frame, START is the offset
1954 of the first nameless arg, and NUM is the number of nameless args to
1955 print. FIRST is nonzero if this is the first argument (not just
1956 the first nameless arg). */
1957
1958static void
fba45db2
KB
1959print_frame_nameless_args (struct frame_info *fi, long start, int num,
1960 int first, struct ui_file *stream)
c906108c
SS
1961{
1962 int i;
1963 CORE_ADDR argsaddr;
1964 long arg_value;
1965
1966 for (i = 0; i < num; i++)
1967 {
1968 QUIT;
1969#ifdef NAMELESS_ARG_VALUE
1970 NAMELESS_ARG_VALUE (fi, start, &arg_value);
1971#else
1972 argsaddr = FRAME_ARGS_ADDRESS (fi);
1973 if (!argsaddr)
1974 return;
1975
1976 arg_value = read_memory_integer (argsaddr + start, sizeof (int));
1977#endif
1978
1979 if (!first)
1980 fprintf_filtered (stream, ", ");
1981
1982#ifdef PRINT_NAMELESS_INTEGER
1983 PRINT_NAMELESS_INTEGER (stream, arg_value);
1984#else
1985#ifdef PRINT_TYPELESS_INTEGER
1986 PRINT_TYPELESS_INTEGER (stream, builtin_type_int, (LONGEST) arg_value);
1987#else
1988 fprintf_filtered (stream, "%ld", arg_value);
1989#endif /* PRINT_TYPELESS_INTEGER */
1990#endif /* PRINT_NAMELESS_INTEGER */
1991 first = 0;
1992 start += sizeof (int);
1993 }
1994}
1995\f
1996/* ARGSUSED */
1997static void
fba45db2 1998printf_command (char *arg, int from_tty)
c906108c
SS
1999{
2000 register char *f = NULL;
2001 register char *s = arg;
2002 char *string = NULL;
3d6d86c6 2003 struct value **val_args;
c906108c
SS
2004 char *substrings;
2005 char *current_substring;
2006 int nargs = 0;
2007 int allocated_args = 20;
2008 struct cleanup *old_cleanups;
2009
f976f6d4
AC
2010 val_args = (struct value **) xmalloc (allocated_args
2011 * sizeof (struct value *));
c13c43fd 2012 old_cleanups = make_cleanup (free_current_contents, &val_args);
c906108c
SS
2013
2014 if (s == 0)
2015 error_no_arg ("format-control string and values to print");
2016
2017 /* Skip white space before format string */
c5aa993b
JM
2018 while (*s == ' ' || *s == '\t')
2019 s++;
c906108c
SS
2020
2021 /* A format string should follow, enveloped in double quotes */
2022 if (*s++ != '"')
2023 error ("Bad format string, missing '\"'.");
2024
2025 /* Parse the format-control string and copy it into the string STRING,
2026 processing some kinds of escape sequence. */
2027
2028 f = string = (char *) alloca (strlen (s) + 1);
2029
2030 while (*s != '"')
2031 {
2032 int c = *s++;
2033 switch (c)
2034 {
2035 case '\0':
2036 error ("Bad format string, non-terminated '\"'.");
2037
2038 case '\\':
2039 switch (c = *s++)
2040 {
2041 case '\\':
2042 *f++ = '\\';
2043 break;
2044 case 'a':
c906108c 2045 *f++ = '\a';
c906108c
SS
2046 break;
2047 case 'b':
2048 *f++ = '\b';
2049 break;
2050 case 'f':
2051 *f++ = '\f';
2052 break;
2053 case 'n':
2054 *f++ = '\n';
2055 break;
2056 case 'r':
2057 *f++ = '\r';
2058 break;
2059 case 't':
2060 *f++ = '\t';
2061 break;
2062 case 'v':
2063 *f++ = '\v';
2064 break;
2065 case '"':
2066 *f++ = '"';
2067 break;
2068 default:
2069 /* ??? TODO: handle other escape sequences */
2070 error ("Unrecognized escape character \\%c in format string.",
2071 c);
2072 }
2073 break;
2074
2075 default:
2076 *f++ = c;
2077 }
2078 }
2079
2080 /* Skip over " and following space and comma. */
2081 s++;
2082 *f++ = '\0';
c5aa993b
JM
2083 while (*s == ' ' || *s == '\t')
2084 s++;
c906108c
SS
2085
2086 if (*s != ',' && *s != 0)
2087 error ("Invalid argument syntax");
2088
c5aa993b
JM
2089 if (*s == ',')
2090 s++;
2091 while (*s == ' ' || *s == '\t')
2092 s++;
c906108c
SS
2093
2094 /* Need extra space for the '\0's. Doubling the size is sufficient. */
2095 substrings = alloca (strlen (string) * 2);
2096 current_substring = substrings;
2097
2098 {
2099 /* Now scan the string for %-specs and see what kinds of args they want.
2100 argclass[I] classifies the %-specs so we can give printf_filtered
2101 something of the right size. */
2102
c5aa993b
JM
2103 enum argclass
2104 {
2105 no_arg, int_arg, string_arg, double_arg, long_long_arg
2106 };
c906108c
SS
2107 enum argclass *argclass;
2108 enum argclass this_argclass;
2109 char *last_arg;
2110 int nargs_wanted;
2111 int lcount;
2112 int i;
2113
2114 argclass = (enum argclass *) alloca (strlen (s) * sizeof *argclass);
2115 nargs_wanted = 0;
2116 f = string;
2117 last_arg = string;
2118 while (*f)
2119 if (*f++ == '%')
2120 {
2121 lcount = 0;
c5aa993b 2122 while (strchr ("0123456789.hlL-+ #", *f))
c906108c
SS
2123 {
2124 if (*f == 'l' || *f == 'L')
2125 lcount++;
2126 f++;
2127 }
2128 switch (*f)
2129 {
2130 case 's':
2131 this_argclass = string_arg;
2132 break;
2133
2134 case 'e':
2135 case 'f':
2136 case 'g':
2137 this_argclass = double_arg;
2138 break;
2139
2140 case '*':
2141 error ("`*' not supported for precision or width in printf");
2142
2143 case 'n':
2144 error ("Format specifier `n' not supported in printf");
2145
2146 case '%':
2147 this_argclass = no_arg;
2148 break;
2149
2150 default:
2151 if (lcount > 1)
2152 this_argclass = long_long_arg;
2153 else
2154 this_argclass = int_arg;
2155 break;
2156 }
2157 f++;
2158 if (this_argclass != no_arg)
2159 {
2160 strncpy (current_substring, last_arg, f - last_arg);
2161 current_substring += f - last_arg;
2162 *current_substring++ = '\0';
2163 last_arg = f;
2164 argclass[nargs_wanted++] = this_argclass;
2165 }
2166 }
2167
2168 /* Now, parse all arguments and evaluate them.
2169 Store the VALUEs in VAL_ARGS. */
2170
2171 while (*s != '\0')
2172 {
2173 char *s1;
2174 if (nargs == allocated_args)
f976f6d4
AC
2175 val_args = (struct value **) xrealloc ((char *) val_args,
2176 (allocated_args *= 2)
2177 * sizeof (struct value *));
c906108c
SS
2178 s1 = s;
2179 val_args[nargs] = parse_to_comma_and_eval (&s1);
c5aa993b 2180
c906108c
SS
2181 /* If format string wants a float, unchecked-convert the value to
2182 floating point of the same size */
c5aa993b 2183
c906108c
SS
2184 if (argclass[nargs] == double_arg)
2185 {
2186 struct type *type = VALUE_TYPE (val_args[nargs]);
2187 if (TYPE_LENGTH (type) == sizeof (float))
c5aa993b 2188 VALUE_TYPE (val_args[nargs]) = builtin_type_float;
c906108c 2189 if (TYPE_LENGTH (type) == sizeof (double))
c5aa993b 2190 VALUE_TYPE (val_args[nargs]) = builtin_type_double;
c906108c
SS
2191 }
2192 nargs++;
2193 s = s1;
2194 if (*s == ',')
2195 s++;
2196 }
c5aa993b 2197
c906108c
SS
2198 if (nargs != nargs_wanted)
2199 error ("Wrong number of arguments for specified format-string");
2200
2201 /* Now actually print them. */
2202 current_substring = substrings;
2203 for (i = 0; i < nargs; i++)
2204 {
2205 switch (argclass[i])
2206 {
2207 case string_arg:
2208 {
2209 char *str;
2210 CORE_ADDR tem;
2211 int j;
1aa20aa8 2212 tem = value_as_address (val_args[i]);
c906108c
SS
2213
2214 /* This is a %s argument. Find the length of the string. */
c5aa993b 2215 for (j = 0;; j++)
c906108c
SS
2216 {
2217 char c;
2218 QUIT;
d4b2399a 2219 read_memory (tem + j, &c, 1);
c906108c
SS
2220 if (c == 0)
2221 break;
2222 }
2223
2224 /* Copy the string contents into a string inside GDB. */
2225 str = (char *) alloca (j + 1);
7b92f6e1
MS
2226 if (j != 0)
2227 read_memory (tem, str, j);
c906108c
SS
2228 str[j] = 0;
2229
2230 printf_filtered (current_substring, str);
2231 }
2232 break;
2233 case double_arg:
2234 {
2235 double val = value_as_double (val_args[i]);
2236 printf_filtered (current_substring, val);
2237 break;
2238 }
2239 case long_long_arg:
2240#if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2241 {
2242 long long val = value_as_long (val_args[i]);
2243 printf_filtered (current_substring, val);
2244 break;
2245 }
2246#else
2247 error ("long long not supported in printf");
2248#endif
2249 case int_arg:
2250 {
2251 /* FIXME: there should be separate int_arg and long_arg. */
2252 long val = value_as_long (val_args[i]);
2253 printf_filtered (current_substring, val);
2254 break;
2255 }
c5aa993b
JM
2256 default: /* purecov: deadcode */
2257 error ("internal error in printf_command"); /* purecov: deadcode */
c906108c
SS
2258 }
2259 /* Skip to the next substring. */
2260 current_substring += strlen (current_substring) + 1;
2261 }
2262 /* Print the portion of the format string after the last argument. */
2263 printf_filtered (last_arg);
2264 }
2265 do_cleanups (old_cleanups);
2266}
2267\f
2268/* Dump a specified section of assembly code. With no command line
2269 arguments, this command will dump the assembly code for the
2270 function surrounding the pc value in the selected frame. With one
2271 argument, it will dump the assembly code surrounding that pc value.
2272 Two arguments are interpeted as bounds within which to dump
2273 assembly. */
2274
2275/* ARGSUSED */
2276static void
fba45db2 2277disassemble_command (char *arg, int from_tty)
c906108c
SS
2278{
2279 CORE_ADDR low, high;
2280 char *name;
2281 CORE_ADDR pc, pc_masked;
2282 char *space_index;
2283#if 0
2284 asection *section;
2285#endif
2286
2287 name = NULL;
2288 if (!arg)
2289 {
2290 if (!selected_frame)
2291 error ("No frame selected.\n");
2292
2293 pc = get_frame_pc (selected_frame);
2294 if (find_pc_partial_function (pc, &name, &low, &high) == 0)
2295 error ("No function contains program counter for selected frame.\n");
2296#if defined(TUI)
2297 else if (tui_version)
5ecb1806 2298 low = tuiGetLowDisassemblyAddress (low, pc);
c906108c
SS
2299#endif
2300 low += FUNCTION_START_OFFSET;
2301 }
2302 else if (!(space_index = (char *) strchr (arg, ' ')))
2303 {
2304 /* One argument. */
2305 pc = parse_and_eval_address (arg);
2306 if (find_pc_partial_function (pc, &name, &low, &high) == 0)
2307 error ("No function contains specified address.\n");
2308#if defined(TUI)
2309 else if (tui_version)
5ecb1806 2310 low = tuiGetLowDisassemblyAddress (low, pc);
c906108c
SS
2311#endif
2312 low += FUNCTION_START_OFFSET;
2313 }
2314 else
2315 {
2316 /* Two arguments. */
2317 *space_index = '\0';
2318 low = parse_and_eval_address (arg);
2319 high = parse_and_eval_address (space_index + 1);
2320 }
2321
2322#if defined(TUI)
5ecb1806 2323 if (!tui_is_window_visible (DISASSEM_WIN))
c906108c
SS
2324#endif
2325 {
2326 printf_filtered ("Dump of assembler code ");
2327 if (name != NULL)
2328 {
2329 printf_filtered ("for function %s:\n", name);
2330 }
2331 else
2332 {
2333 printf_filtered ("from ");
2334 print_address_numeric (low, 1, gdb_stdout);
2335 printf_filtered (" to ");
2336 print_address_numeric (high, 1, gdb_stdout);
2337 printf_filtered (":\n");
2338 }
2339
2340 /* Dump the specified range. */
2341 pc = low;
2342
2343#ifdef GDB_TARGET_MASK_DISAS_PC
2344 pc_masked = GDB_TARGET_MASK_DISAS_PC (pc);
2345#else
2346 pc_masked = pc;
2347#endif
2348
2349 while (pc_masked < high)
2350 {
2351 QUIT;
2352 print_address (pc_masked, gdb_stdout);
2353 printf_filtered (":\t");
2354 /* We often wrap here if there are long symbolic names. */
2355 wrap_here (" ");
2356 pc += print_insn (pc, gdb_stdout);
2357 printf_filtered ("\n");
2358
2359#ifdef GDB_TARGET_MASK_DISAS_PC
2360 pc_masked = GDB_TARGET_MASK_DISAS_PC (pc);
2361#else
2362 pc_masked = pc;
2363#endif
2364 }
2365 printf_filtered ("End of assembler dump.\n");
2366 gdb_flush (gdb_stdout);
2367 }
2368#if defined(TUI)
2369 else
2370 {
5ecb1806 2371 tui_show_assembly (low);
c906108c
SS
2372 }
2373#endif
2374}
2375
2376/* Print the instruction at address MEMADDR in debugged memory,
2377 on STREAM. Returns length of the instruction, in bytes. */
2378
2379static int
fba45db2 2380print_insn (CORE_ADDR memaddr, struct ui_file *stream)
c906108c 2381{
d7449b42 2382 if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
c906108c
SS
2383 TARGET_PRINT_INSN_INFO->endian = BFD_ENDIAN_BIG;
2384 else
2385 TARGET_PRINT_INSN_INFO->endian = BFD_ENDIAN_LITTLE;
2386
2387 if (TARGET_ARCHITECTURE != NULL)
2388 TARGET_PRINT_INSN_INFO->mach = TARGET_ARCHITECTURE->mach;
2389 /* else: should set .mach=0 but some disassemblers don't grok this */
2390
99a6d8ba
KS
2391 TARGET_PRINT_INSN_INFO->stream = stream;
2392
c906108c
SS
2393 return TARGET_PRINT_INSN (memaddr, TARGET_PRINT_INSN_INFO);
2394}
c906108c 2395\f
c5aa993b 2396
c906108c 2397void
fba45db2 2398_initialize_printcmd (void)
c906108c 2399{
c94fdfd0
EZ
2400 struct cmd_list_element *c;
2401
c906108c
SS
2402 current_display_number = -1;
2403
2404 add_info ("address", address_info,
c5aa993b 2405 "Describe where symbol SYM is stored.");
c906108c 2406
c5aa993b 2407 add_info ("symbol", sym_info,
c906108c
SS
2408 "Describe what symbol is at location ADDR.\n\
2409Only for symbols with fixed locations (global or static scope).");
2410
2411 add_com ("x", class_vars, x_command,
2412 concat ("Examine memory: x/FMT ADDRESS.\n\
2413ADDRESS is an expression for the memory address to examine.\n\
2414FMT is a repeat count followed by a format letter and a size letter.\n\
2415Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2416 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n",
c5aa993b 2417 "Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
c906108c
SS
2418The specified number of objects of the specified size are printed\n\
2419according to the format.\n\n\
2420Defaults for format and size letters are those previously used.\n\
2421Default count is 1. Default address is following last thing printed\n\
2422with this command or \"print\".", NULL));
2423
c94fdfd0
EZ
2424 c = add_com ("disassemble", class_vars, disassemble_command,
2425 "Disassemble a specified section of memory.\n\
c906108c
SS
2426Default is the function surrounding the pc of the selected frame.\n\
2427With a single argument, the function surrounding that address is dumped.\n\
2428Two arguments are taken as a range of memory to dump.");
5ba2abeb 2429 set_cmd_completer (c, location_completer);
c906108c 2430 if (xdb_commands)
c5aa993b 2431 add_com_alias ("va", "disassemble", class_xdb, 0);
c906108c
SS
2432
2433#if 0
2434 add_com ("whereis", class_vars, whereis_command,
2435 "Print line number and file of definition of variable.");
2436#endif
c5aa993b 2437
c906108c
SS
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\
2443Arguments are the code numbers of the expressions to stop displaying.\n\
2444No argument means cancel all automatic-display expressions.\n\
2445\"delete display\" has the same effect as this command.\n\
2446Do \"info display\" to see current list of code numbers.",
c5aa993b 2447 &cmdlist);
c906108c
SS
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\
2453as in the \"x\" command, and then EXP is used to get the address to examine\n\
2454and examining is done as in the \"x\" command.\n\n\
2455With no argument, display all currently requested auto-display expressions.\n\
2456Use \"undisplay\" to cancel display requests previously made."
c5aa993b 2457 );
c906108c 2458
c5aa993b 2459 add_cmd ("display", class_vars, enable_display,
c906108c
SS
2460 "Enable some expressions to be displayed when program stops.\n\
2461Arguments are the code numbers of the expressions to resume displaying.\n\
2462No argument means enable all automatic-display expressions.\n\
2463Do \"info display\" to see current list of code numbers.", &enablelist);
2464
c5aa993b 2465 add_cmd ("display", class_vars, disable_display_command,
c906108c
SS
2466 "Disable some expressions to be displayed when program stops.\n\
2467Arguments are the code numbers of the expressions to stop displaying.\n\
2468No argument means disable all automatic-display expressions.\n\
2469Do \"info display\" to see current list of code numbers.", &disablelist);
2470
c5aa993b 2471 add_cmd ("display", class_vars, undisplay_command,
c906108c
SS
2472 "Cancel some expressions to be displayed when program stops.\n\
2473Arguments are the code numbers of the expressions to stop displaying.\n\
2474No argument means cancel all automatic-display expressions.\n\
2475Do \"info display\" to see current list of code numbers.", &deletelist);
2476
2477 add_com ("printf", class_vars, printf_command,
c5aa993b 2478 "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
c906108c
SS
2479This 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\
2483This is useful in user-defined commands.");
2484
2485 add_prefix_cmd ("set", class_vars, set_command,
c5aa993b 2486 concat ("Evaluate expression EXP and assign result to variable VAR, using assignment\n\
c906108c
SS
2487syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2488example). VAR may be a debugger \"convenience\" variable (names starting\n\
2489with $), a register (a few standard names starting with $), or an actual\n\
2490variable in the program being debugged. EXP is any valid expression.\n",
c5aa993b 2491 "Use \"set variable\" for variables with names identical to set subcommands.\n\
c906108c
SS
2492\nWith a subcommand, this command modifies parts of the gdb environment.\n\
2493You can see these environment settings with the \"show\" command.", NULL),
c5aa993b 2494 &setlist, "set ", 1, &cmdlist);
c906108c 2495 if (dbx_commands)
c5aa993b 2496 add_com ("assign", class_vars, set_command, concat ("Evaluate expression \
c906108c
SS
2497EXP and assign result to variable VAR, using assignment\n\
2498syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2499example). VAR may be a debugger \"convenience\" variable (names starting\n\
2500with $), a register (a few standard names starting with $), or an actual\n\
2501variable in the program being debugged. EXP is any valid expression.\n",
c5aa993b 2502 "Use \"set variable\" for variables with names identical to set subcommands.\n\
c906108c
SS
2503\nWith a subcommand, this command modifies parts of the gdb environment.\n\
2504You 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. */
c94fdfd0
EZ
2507 c = add_com ("call", class_vars, call_command,
2508 "Call a function in the program.\n\
c906108c
SS
2509The argument is the function name and arguments, in the notation of the\n\
2510current working language. The result is printed and saved in the value\n\
2511history, if it is not void.");
5ba2abeb 2512 set_cmd_completer (c, location_completer);
c906108c
SS
2513
2514 add_cmd ("variable", class_vars, set_command,
c5aa993b 2515 "Evaluate expression EXP and assign result to variable VAR, using assignment\n\
c906108c
SS
2516syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2517example). VAR may be a debugger \"convenience\" variable (names starting\n\
2518with $), a register (a few standard names starting with $), or an actual\n\
2519variable in the program being debugged. EXP is any valid expression.\n\
2520This may usually be abbreviated to simply \"set\".",
c5aa993b 2521 &setlist);
c906108c 2522
c94fdfd0 2523 c = add_com ("print", class_vars, print_command,
c906108c
SS
2524 concat ("Print value of expression EXP.\n\
2525Variables accessible are those of the lexical environment of the selected\n\
2526stack frame, plus all those whose scope is global or an entire file.\n\
2527\n\
2528$NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2529$$NUM refers to NUM'th value back from the last one.\n\
2530Names starting with $ refer to registers (with the values they would have\n",
c5aa993b 2531 "if the program were to return to the stack frame now selected, restoring\n\
c906108c
SS
2532all registers saved by frames farther in) or else to debugger\n\
2533\"convenience\" variables (any such name not a known register).\n\
2534Use assignment expressions to give values to convenience variables.\n",
2535 "\n\
2536{TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2537@ is a binary operator for treating consecutive data objects\n\
2538anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2539element is FOO, whose second element is stored in the space following\n\
2540where FOO is stored, etc. FOO must be an expression whose value\n\
2541resides in memory.\n",
2542 "\n\
2543EXP may be preceded with /FMT, where FMT is a format letter\n\
2544but no count or size letter (see \"x\" command).", NULL));
5ba2abeb 2545 set_cmd_completer (c, location_completer);
c906108c
SS
2546 add_com_alias ("p", "print", class_vars, 1);
2547
c94fdfd0 2548 c = add_com ("inspect", class_vars, inspect_command,
c5aa993b 2549 "Same as \"print\" command, except that if you are running in the epoch\n\
c906108c 2550environment, the value is printed in its own window.");
5ba2abeb 2551 set_cmd_completer (c, location_completer);
c906108c
SS
2552
2553 add_show_from_set (
c5aa993b
JM
2554 add_set_cmd ("max-symbolic-offset", no_class, var_uinteger,
2555 (char *) &max_symbolic_offset,
2556 "Set the largest offset that will be printed in <symbol+1234> form.",
2557 &setprintlist),
2558 &showprintlist);
c906108c 2559 add_show_from_set (
c5aa993b
JM
2560 add_set_cmd ("symbol-filename", no_class, var_boolean,
2561 (char *) &print_symbol_filename,
2562 "Set printing of source filename and line number with <symbol>.",
2563 &setprintlist),
2564 &showprintlist);
c906108c
SS
2565
2566 /* For examine/instruction a single byte quantity is specified as
2567 the data. This avoids problems with value_at_lazy() requiring a
2568 valid data type (and rejecting VOID). */
2569 examine_i_type = init_type (TYPE_CODE_INT, 1, 0, "examine_i_type", NULL);
2570
2571 examine_b_type = init_type (TYPE_CODE_INT, 1, 0, "examine_b_type", NULL);
2572 examine_h_type = init_type (TYPE_CODE_INT, 2, 0, "examine_h_type", NULL);
2573 examine_w_type = init_type (TYPE_CODE_INT, 4, 0, "examine_w_type", NULL);
2574 examine_g_type = init_type (TYPE_CODE_INT, 8, 0, "examine_g_type", NULL);
2575
2576}
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