Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Print values for GNU debugger GDB. |
d9fcf2fb | 2 | Copyright 1986-1991, 1993-1995, 1998, 2000 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b JM |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
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" | |
c5aa993b JM |
36 | #include "symfile.h" /* for overlay functions */ |
37 | #include "objfiles.h" /* ditto */ | |
8b93c638 JM |
38 | #ifdef UI_OUT |
39 | #include "ui-out.h" | |
40 | #endif | |
c906108c SS |
41 | |
42 | extern int asm_demangle; /* Whether to demangle syms in asm printouts */ | |
43 | extern int addressprint; /* Whether to print hex addresses in HLL " */ | |
44 | ||
45 | struct format_data | |
c5aa993b JM |
46 | { |
47 | int count; | |
48 | char format; | |
49 | char size; | |
50 | }; | |
c906108c SS |
51 | |
52 | /* Last specified output format. */ | |
53 | ||
54 | static char last_format = 'x'; | |
55 | ||
56 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
57 | ||
58 | static char last_size = 'w'; | |
59 | ||
60 | /* Default address to examine next. */ | |
61 | ||
62 | static CORE_ADDR next_address; | |
63 | ||
64 | /* Default section to examine next. */ | |
65 | ||
66 | static asection *next_section; | |
67 | ||
68 | /* Last address examined. */ | |
69 | ||
70 | static CORE_ADDR last_examine_address; | |
71 | ||
72 | /* Contents of last address examined. | |
73 | This is not valid past the end of the `x' command! */ | |
74 | ||
75 | static value_ptr last_examine_value; | |
76 | ||
77 | /* Largest offset between a symbolic value and an address, that will be | |
78 | printed as `0x1234 <symbol+offset>'. */ | |
79 | ||
80 | static unsigned int max_symbolic_offset = UINT_MAX; | |
81 | ||
82 | /* Append the source filename and linenumber of the symbol when | |
83 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
84 | static int print_symbol_filename = 0; | |
85 | ||
86 | /* Number of auto-display expression currently being displayed. | |
87 | So that we can disable it if we get an error or a signal within it. | |
88 | -1 when not doing one. */ | |
89 | ||
90 | int current_display_number; | |
91 | ||
92 | /* Flag to low-level print routines that this value is being printed | |
93 | in an epoch window. We'd like to pass this as a parameter, but | |
94 | every routine would need to take it. Perhaps we can encapsulate | |
95 | this in the I/O stream once we have GNU stdio. */ | |
96 | ||
97 | int inspect_it = 0; | |
98 | ||
99 | struct display | |
c5aa993b JM |
100 | { |
101 | /* Chain link to next auto-display item. */ | |
102 | struct display *next; | |
103 | /* Expression to be evaluated and displayed. */ | |
104 | struct expression *exp; | |
105 | /* Item number of this auto-display item. */ | |
106 | int number; | |
107 | /* Display format specified. */ | |
108 | struct format_data format; | |
109 | /* Innermost block required by this expression when evaluated */ | |
110 | struct block *block; | |
111 | /* Status of this display (enabled or disabled) */ | |
112 | enum enable status; | |
113 | }; | |
c906108c SS |
114 | |
115 | /* Chain of expressions whose values should be displayed | |
116 | automatically each time the program stops. */ | |
117 | ||
118 | static struct display *display_chain; | |
119 | ||
120 | static int display_number; | |
121 | ||
122 | /* Prototypes for exported functions. */ | |
123 | ||
a14ed312 | 124 | void output_command (char *, int); |
c906108c | 125 | |
a14ed312 | 126 | void _initialize_printcmd (void); |
c906108c SS |
127 | |
128 | /* Prototypes for local functions. */ | |
129 | ||
a14ed312 | 130 | static void delete_display (int); |
c906108c | 131 | |
a14ed312 | 132 | static void enable_display (char *, int); |
c906108c | 133 | |
a14ed312 | 134 | static void disable_display_command (char *, int); |
c906108c | 135 | |
a14ed312 | 136 | static void disassemble_command (char *, int); |
c906108c | 137 | |
a14ed312 | 138 | static void printf_command (char *, int); |
c906108c | 139 | |
d9fcf2fb JM |
140 | static void print_frame_nameless_args (struct frame_info *, long, |
141 | int, int, struct ui_file *); | |
c906108c | 142 | |
a14ed312 | 143 | static void display_info (char *, int); |
c906108c | 144 | |
a14ed312 | 145 | static void do_one_display (struct display *); |
c906108c | 146 | |
a14ed312 | 147 | static void undisplay_command (char *, int); |
c906108c | 148 | |
a14ed312 | 149 | static void free_display (struct display *); |
c906108c | 150 | |
a14ed312 | 151 | static void display_command (char *, int); |
c906108c | 152 | |
a14ed312 | 153 | void x_command (char *, int); |
c906108c | 154 | |
a14ed312 | 155 | static void address_info (char *, int); |
c906108c | 156 | |
a14ed312 | 157 | static void set_command (char *, int); |
c906108c | 158 | |
a14ed312 | 159 | static void call_command (char *, int); |
c906108c | 160 | |
a14ed312 | 161 | static void inspect_command (char *, int); |
c906108c | 162 | |
a14ed312 | 163 | static void print_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static void print_command_1 (char *, int, int); |
c906108c | 166 | |
a14ed312 | 167 | static void validate_format (struct format_data, char *); |
c906108c | 168 | |
a14ed312 KB |
169 | static void do_examine (struct format_data, CORE_ADDR addr, |
170 | asection * section); | |
c906108c | 171 | |
d9fcf2fb | 172 | static void print_formatted (value_ptr, int, int, struct ui_file *); |
c906108c | 173 | |
a14ed312 | 174 | static struct format_data decode_format (char **, int, int); |
c906108c | 175 | |
d9fcf2fb | 176 | static int print_insn (CORE_ADDR, struct ui_file *); |
c906108c | 177 | |
a14ed312 | 178 | static void sym_info (char *, int); |
c906108c | 179 | \f |
c5aa993b | 180 | |
c906108c SS |
181 | /* Decode a format specification. *STRING_PTR should point to it. |
182 | OFORMAT and OSIZE are used as defaults for the format and size | |
183 | if none are given in the format specification. | |
184 | If OSIZE is zero, then the size field of the returned value | |
185 | should be set only if a size is explicitly specified by the | |
186 | user. | |
187 | The structure returned describes all the data | |
188 | found in the specification. In addition, *STRING_PTR is advanced | |
189 | past the specification and past all whitespace following it. */ | |
190 | ||
191 | static struct format_data | |
192 | decode_format (string_ptr, oformat, osize) | |
193 | char **string_ptr; | |
194 | int oformat; | |
195 | int osize; | |
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 */ | |
253 | abort (); | |
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 | ||
282 | static void | |
2acceee2 | 283 | print_formatted (val, format, size, stream) |
c906108c SS |
284 | register value_ptr val; |
285 | register int format; | |
286 | int size; | |
d9fcf2fb | 287 | struct ui_file *stream; |
c906108c SS |
288 | { |
289 | struct type *type = check_typedef (VALUE_TYPE (val)); | |
290 | int len = TYPE_LENGTH (type); | |
291 | ||
292 | if (VALUE_LVAL (val) == lval_memory) | |
293 | { | |
294 | next_address = VALUE_ADDRESS (val) + len; | |
295 | next_section = VALUE_BFD_SECTION (val); | |
296 | } | |
297 | ||
298 | switch (format) | |
299 | { | |
300 | case 's': | |
301 | /* FIXME: Need to handle wchar_t's here... */ | |
302 | next_address = VALUE_ADDRESS (val) | |
2acceee2 | 303 | + val_print_string (VALUE_ADDRESS (val), -1, 1, stream); |
c906108c SS |
304 | next_section = VALUE_BFD_SECTION (val); |
305 | break; | |
306 | ||
307 | case 'i': | |
308 | /* The old comment says | |
c5aa993b JM |
309 | "Force output out, print_insn not using _filtered". |
310 | I'm not completely sure what that means, I suspect most print_insn | |
311 | now do use _filtered, so I guess it's obsolete. | |
312 | --Yes, it does filter now, and so this is obsolete. -JB */ | |
c906108c SS |
313 | |
314 | /* We often wrap here if there are long symbolic names. */ | |
315 | wrap_here (" "); | |
316 | next_address = VALUE_ADDRESS (val) | |
2acceee2 | 317 | + print_insn (VALUE_ADDRESS (val), stream); |
c906108c SS |
318 | next_section = VALUE_BFD_SECTION (val); |
319 | break; | |
320 | ||
321 | default: | |
322 | if (format == 0 | |
323 | || TYPE_CODE (type) == TYPE_CODE_ARRAY | |
324 | || TYPE_CODE (type) == TYPE_CODE_STRING | |
325 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
326 | || TYPE_CODE (type) == TYPE_CODE_UNION) | |
c5aa993b JM |
327 | /* If format is 0, use the 'natural' format for |
328 | * that type of value. If the type is non-scalar, | |
329 | * we have to use language rules to print it as | |
330 | * a series of scalars. | |
331 | */ | |
2acceee2 | 332 | value_print (val, stream, format, Val_pretty_default); |
c906108c | 333 | else |
c5aa993b JM |
334 | /* User specified format, so don't look to the |
335 | * the type to tell us what to do. | |
336 | */ | |
c906108c | 337 | print_scalar_formatted (VALUE_CONTENTS (val), type, |
2acceee2 | 338 | format, size, stream); |
c906108c SS |
339 | } |
340 | } | |
341 | ||
342 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, | |
343 | according to letters FORMAT and SIZE on STREAM. | |
344 | FORMAT may not be zero. Formats s and i are not supported at this level. | |
345 | ||
346 | This is how the elements of an array or structure are printed | |
347 | with a format. */ | |
348 | ||
349 | void | |
350 | print_scalar_formatted (valaddr, type, format, size, stream) | |
351 | char *valaddr; | |
352 | struct type *type; | |
353 | int format; | |
354 | int size; | |
d9fcf2fb | 355 | struct ui_file *stream; |
c906108c SS |
356 | { |
357 | LONGEST val_long; | |
358 | unsigned int len = TYPE_LENGTH (type); | |
359 | ||
360 | if (len > sizeof (LONGEST) | |
361 | && (format == 't' | |
362 | || format == 'c' | |
363 | || format == 'o' | |
364 | || format == 'u' | |
365 | || format == 'd' | |
366 | || format == 'x')) | |
367 | { | |
c5aa993b JM |
368 | if (!TYPE_UNSIGNED (type) |
369 | || !extract_long_unsigned_integer (valaddr, len, &val_long)) | |
c906108c SS |
370 | { |
371 | /* We can't print it normally, but we can print it in hex. | |
372 | Printing it in the wrong radix is more useful than saying | |
373 | "use /x, you dummy". */ | |
374 | /* FIXME: we could also do octal or binary if that was the | |
375 | desired format. */ | |
376 | /* FIXME: we should be using the size field to give us a | |
377 | minimum field width to print. */ | |
378 | ||
c5aa993b JM |
379 | if (format == 'o') |
380 | print_octal_chars (stream, valaddr, len); | |
381 | else if (format == 'd') | |
382 | print_decimal_chars (stream, valaddr, len); | |
383 | else if (format == 't') | |
384 | print_binary_chars (stream, valaddr, len); | |
385 | else | |
386 | /* replace with call to print_hex_chars? Looks | |
387 | like val_print_type_code_int is redoing | |
388 | work. - edie */ | |
c906108c | 389 | |
c5aa993b | 390 | val_print_type_code_int (type, valaddr, stream); |
c906108c SS |
391 | |
392 | return; | |
393 | } | |
394 | ||
395 | /* If we get here, extract_long_unsigned_integer set val_long. */ | |
396 | } | |
397 | else if (format != 'f') | |
398 | val_long = unpack_long (type, valaddr); | |
399 | ||
400 | /* If we are printing it as unsigned, truncate it in case it is actually | |
401 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
402 | (if shorts are 16 bits) instead of 4294967295). */ | |
403 | if (format != 'd') | |
404 | { | |
405 | if (len < sizeof (LONGEST)) | |
406 | val_long &= ((LONGEST) 1 << HOST_CHAR_BIT * len) - 1; | |
407 | } | |
408 | ||
409 | switch (format) | |
410 | { | |
411 | case 'x': | |
412 | if (!size) | |
413 | { | |
414 | /* no size specified, like in print. Print varying # of digits. */ | |
415 | print_longest (stream, 'x', 1, val_long); | |
416 | } | |
417 | else | |
418 | switch (size) | |
419 | { | |
420 | case 'b': | |
421 | case 'h': | |
422 | case 'w': | |
423 | case 'g': | |
424 | print_longest (stream, size, 1, val_long); | |
425 | break; | |
426 | default: | |
427 | error ("Undefined output size \"%c\".", size); | |
428 | } | |
429 | break; | |
430 | ||
431 | case 'd': | |
432 | print_longest (stream, 'd', 1, val_long); | |
433 | break; | |
434 | ||
435 | case 'u': | |
436 | print_longest (stream, 'u', 0, val_long); | |
437 | break; | |
438 | ||
439 | case 'o': | |
440 | if (val_long) | |
441 | print_longest (stream, 'o', 1, val_long); | |
442 | else | |
443 | fprintf_filtered (stream, "0"); | |
444 | break; | |
445 | ||
446 | case 'a': | |
593de6a6 PS |
447 | { |
448 | /* Truncate address to the size of a target pointer, avoiding | |
eb90a51f AC |
449 | shifts larger or equal than the width of a CORE_ADDR. The |
450 | local variable PTR_BIT stops the compiler reporting a shift | |
451 | overflow when it won't occure. */ | |
593de6a6 | 452 | CORE_ADDR addr = unpack_pointer (type, valaddr); |
eb90a51f AC |
453 | int ptr_bit = TARGET_PTR_BIT; |
454 | if (ptr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) | |
455 | addr &= ((CORE_ADDR) 1 << ptr_bit) - 1; | |
593de6a6 PS |
456 | print_address (addr, stream); |
457 | } | |
c906108c SS |
458 | break; |
459 | ||
460 | case 'c': | |
9e0b60a8 JM |
461 | value_print (value_from_longest (builtin_type_true_char, val_long), |
462 | stream, 0, Val_pretty_default); | |
c906108c SS |
463 | break; |
464 | ||
465 | case 'f': | |
466 | if (len == sizeof (float)) | |
c5aa993b | 467 | type = builtin_type_float; |
c906108c | 468 | else if (len == sizeof (double)) |
c5aa993b | 469 | type = builtin_type_double; |
c906108c SS |
470 | print_floating (valaddr, type, stream); |
471 | break; | |
472 | ||
473 | case 0: | |
474 | abort (); | |
475 | ||
476 | case 't': | |
477 | /* Binary; 't' stands for "two". */ | |
478 | { | |
c5aa993b JM |
479 | char bits[8 * (sizeof val_long) + 1]; |
480 | char buf[8 * (sizeof val_long) + 32]; | |
c906108c SS |
481 | char *cp = bits; |
482 | int width; | |
483 | ||
c5aa993b JM |
484 | if (!size) |
485 | width = 8 * (sizeof val_long); | |
486 | else | |
487 | switch (size) | |
c906108c SS |
488 | { |
489 | case 'b': | |
490 | width = 8; | |
491 | break; | |
492 | case 'h': | |
493 | width = 16; | |
494 | break; | |
495 | case 'w': | |
496 | width = 32; | |
497 | break; | |
498 | case 'g': | |
499 | width = 64; | |
500 | break; | |
501 | default: | |
502 | error ("Undefined output size \"%c\".", size); | |
503 | } | |
504 | ||
c5aa993b JM |
505 | bits[width] = '\0'; |
506 | while (width-- > 0) | |
507 | { | |
508 | bits[width] = (val_long & 1) ? '1' : '0'; | |
509 | val_long >>= 1; | |
510 | } | |
c906108c SS |
511 | if (!size) |
512 | { | |
513 | while (*cp && *cp == '0') | |
514 | cp++; | |
515 | if (*cp == '\0') | |
516 | cp--; | |
517 | } | |
c5aa993b | 518 | strcpy (buf, local_binary_format_prefix ()); |
c906108c | 519 | strcat (buf, cp); |
c5aa993b JM |
520 | strcat (buf, local_binary_format_suffix ()); |
521 | fprintf_filtered (stream, buf); | |
c906108c SS |
522 | } |
523 | break; | |
524 | ||
525 | default: | |
526 | error ("Undefined output format \"%c\".", format); | |
527 | } | |
528 | } | |
529 | ||
530 | /* Specify default address for `x' command. | |
531 | `info lines' uses this. */ | |
532 | ||
533 | void | |
534 | set_next_address (addr) | |
535 | CORE_ADDR addr; | |
536 | { | |
537 | next_address = addr; | |
538 | ||
539 | /* Make address available to the user as $_. */ | |
540 | set_internalvar (lookup_internalvar ("_"), | |
4478b372 JB |
541 | value_from_pointer (lookup_pointer_type (builtin_type_void), |
542 | addr)); | |
c906108c SS |
543 | } |
544 | ||
545 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
546 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
547 | Optionally also print source file and line number, if available. | |
548 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
549 | or to interpret it as a possible C++ name and convert it back to source | |
550 | form. However note that DO_DEMANGLE can be overridden by the specific | |
551 | settings of the demangle and asm_demangle variables. */ | |
552 | ||
553 | void | |
554 | print_address_symbolic (addr, stream, do_demangle, leadin) | |
555 | CORE_ADDR addr; | |
d9fcf2fb | 556 | struct ui_file *stream; |
c906108c SS |
557 | int do_demangle; |
558 | char *leadin; | |
dfcd3bfb JM |
559 | { |
560 | char *name = NULL; | |
561 | char *filename = NULL; | |
562 | int unmapped = 0; | |
563 | int offset = 0; | |
564 | int line = 0; | |
565 | ||
2f9429ae AC |
566 | /* throw away both name and filename */ |
567 | struct cleanup *cleanup_chain = make_cleanup (free_current_contents, &name); | |
568 | make_cleanup (free_current_contents, &filename); | |
dfcd3bfb JM |
569 | |
570 | if (build_address_symbolic (addr, do_demangle, &name, &offset, &filename, &line, &unmapped)) | |
2f9429ae AC |
571 | { |
572 | do_cleanups (cleanup_chain); | |
573 | return; | |
574 | } | |
dfcd3bfb JM |
575 | |
576 | fputs_filtered (leadin, stream); | |
577 | if (unmapped) | |
578 | fputs_filtered ("<*", stream); | |
579 | else | |
580 | fputs_filtered ("<", stream); | |
581 | fputs_filtered (name, stream); | |
582 | if (offset != 0) | |
583 | fprintf_filtered (stream, "+%u", (unsigned int) offset); | |
584 | ||
585 | /* Append source filename and line number if desired. Give specific | |
586 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
587 | if (print_symbol_filename && filename != NULL) | |
588 | { | |
589 | if (line != -1) | |
590 | fprintf_filtered (stream, " at %s:%d", filename, line); | |
591 | else | |
592 | fprintf_filtered (stream, " in %s", filename); | |
593 | } | |
594 | if (unmapped) | |
595 | fputs_filtered ("*>", stream); | |
596 | else | |
597 | fputs_filtered (">", stream); | |
598 | ||
599 | do_cleanups (cleanup_chain); | |
600 | } | |
601 | ||
602 | /* Given an address ADDR return all the elements needed to print the | |
603 | address in a symbolic form. NAME can be mangled or not depending | |
604 | on DO_DEMANGLE (and also on the asm_demangle global variable, | |
605 | manipulated via ''set print asm-demangle''). Return 0 in case of | |
606 | success, when all the info in the OUT paramters is valid. Return 1 | |
607 | otherwise. */ | |
608 | int | |
609 | build_address_symbolic (CORE_ADDR addr, /* IN */ | |
610 | int do_demangle, /* IN */ | |
611 | char **name, /* OUT */ | |
612 | int *offset, /* OUT */ | |
613 | char **filename, /* OUT */ | |
614 | int *line, /* OUT */ | |
615 | int *unmapped) /* OUT */ | |
c906108c SS |
616 | { |
617 | struct minimal_symbol *msymbol; | |
618 | struct symbol *symbol; | |
619 | struct symtab *symtab = 0; | |
620 | CORE_ADDR name_location = 0; | |
c906108c | 621 | asection *section = 0; |
dfcd3bfb JM |
622 | char *name_temp = ""; |
623 | ||
624 | /* Let's say it is unmapped. */ | |
625 | *unmapped = 0; | |
c906108c | 626 | |
dfcd3bfb JM |
627 | /* Determine if the address is in an overlay, and whether it is |
628 | mapped. */ | |
c906108c SS |
629 | if (overlay_debugging) |
630 | { | |
631 | section = find_pc_overlay (addr); | |
632 | if (pc_in_unmapped_range (addr, section)) | |
633 | { | |
dfcd3bfb | 634 | *unmapped = 1; |
c906108c SS |
635 | addr = overlay_mapped_address (addr, section); |
636 | } | |
637 | } | |
638 | ||
639 | /* On some targets, add in extra "flag" bits to PC for | |
640 | disassembly. This should ensure that "rounding errors" in | |
641 | symbol addresses that are masked for disassembly favour the | |
642 | the correct symbol. */ | |
643 | ||
644 | #ifdef GDB_TARGET_UNMASK_DISAS_PC | |
645 | addr = GDB_TARGET_UNMASK_DISAS_PC (addr); | |
646 | #endif | |
647 | ||
648 | /* First try to find the address in the symbol table, then | |
649 | in the minsyms. Take the closest one. */ | |
650 | ||
651 | /* This is defective in the sense that it only finds text symbols. So | |
652 | really this is kind of pointless--we should make sure that the | |
653 | minimal symbols have everything we need (by changing that we could | |
654 | save some memory, but for many debug format--ELF/DWARF or | |
655 | anything/stabs--it would be inconvenient to eliminate those minimal | |
656 | symbols anyway). */ | |
657 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section); | |
658 | symbol = find_pc_sect_function (addr, section); | |
659 | ||
660 | if (symbol) | |
661 | { | |
662 | name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol)); | |
663 | if (do_demangle) | |
dfcd3bfb | 664 | name_temp = SYMBOL_SOURCE_NAME (symbol); |
c906108c | 665 | else |
dfcd3bfb | 666 | name_temp = SYMBOL_LINKAGE_NAME (symbol); |
c906108c SS |
667 | } |
668 | ||
669 | if (msymbol != NULL) | |
670 | { | |
671 | if (SYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL) | |
672 | { | |
673 | /* The msymbol is closer to the address than the symbol; | |
674 | use the msymbol instead. */ | |
675 | symbol = 0; | |
676 | symtab = 0; | |
677 | name_location = SYMBOL_VALUE_ADDRESS (msymbol); | |
678 | if (do_demangle) | |
dfcd3bfb | 679 | name_temp = SYMBOL_SOURCE_NAME (msymbol); |
c906108c | 680 | else |
dfcd3bfb | 681 | name_temp = SYMBOL_LINKAGE_NAME (msymbol); |
c906108c SS |
682 | } |
683 | } | |
684 | if (symbol == NULL && msymbol == NULL) | |
dfcd3bfb | 685 | return 1; |
c906108c SS |
686 | |
687 | /* On some targets, mask out extra "flag" bits from PC for handsome | |
688 | disassembly. */ | |
689 | ||
690 | #ifdef GDB_TARGET_MASK_DISAS_PC | |
691 | name_location = GDB_TARGET_MASK_DISAS_PC (name_location); | |
692 | addr = GDB_TARGET_MASK_DISAS_PC (addr); | |
693 | #endif | |
694 | ||
695 | /* If the nearest symbol is too far away, don't print anything symbolic. */ | |
696 | ||
697 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
698 | CORE_ADDR. But when we detect unsigned wraparound in the | |
699 | CORE_ADDR math, we ignore this test and print the offset, | |
700 | because addr+max_symbolic_offset has wrapped through the end | |
701 | of the address space back to the beginning, giving bogus comparison. */ | |
702 | if (addr > name_location + max_symbolic_offset | |
703 | && name_location + max_symbolic_offset > name_location) | |
dfcd3bfb | 704 | return 1; |
c906108c | 705 | |
dfcd3bfb JM |
706 | *offset = addr - name_location; |
707 | ||
708 | *name = xstrdup (name_temp); | |
c906108c | 709 | |
c906108c SS |
710 | if (print_symbol_filename) |
711 | { | |
712 | struct symtab_and_line sal; | |
713 | ||
714 | sal = find_pc_sect_line (addr, section, 0); | |
715 | ||
716 | if (sal.symtab) | |
dfcd3bfb JM |
717 | { |
718 | *filename = xstrdup (sal.symtab->filename); | |
719 | *line = sal.line; | |
720 | } | |
c906108c | 721 | else if (symtab && symbol && symbol->line) |
dfcd3bfb JM |
722 | { |
723 | *filename = xstrdup (symtab->filename); | |
724 | *line = symbol->line; | |
725 | } | |
c906108c | 726 | else if (symtab) |
dfcd3bfb JM |
727 | { |
728 | *filename = xstrdup (symtab->filename); | |
729 | *line = -1; | |
730 | } | |
c906108c | 731 | } |
dfcd3bfb | 732 | return 0; |
c906108c SS |
733 | } |
734 | ||
c906108c SS |
735 | /* Print address ADDR on STREAM. USE_LOCAL means the same thing as for |
736 | print_longest. */ | |
737 | void | |
738 | print_address_numeric (addr, use_local, stream) | |
739 | CORE_ADDR addr; | |
740 | int use_local; | |
d9fcf2fb | 741 | struct ui_file *stream; |
c906108c SS |
742 | { |
743 | /* This assumes a CORE_ADDR can fit in a LONGEST. Probably a safe | |
744 | assumption. */ | |
745 | print_longest (stream, 'x', use_local, (ULONGEST) addr); | |
746 | } | |
747 | ||
748 | /* Print address ADDR symbolically on STREAM. | |
749 | First print it as a number. Then perhaps print | |
750 | <SYMBOL + OFFSET> after the number. */ | |
751 | ||
752 | void | |
753 | print_address (addr, stream) | |
754 | CORE_ADDR addr; | |
d9fcf2fb | 755 | struct ui_file *stream; |
c906108c SS |
756 | { |
757 | print_address_numeric (addr, 1, stream); | |
758 | print_address_symbolic (addr, stream, asm_demangle, " "); | |
759 | } | |
760 | ||
761 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE | |
762 | controls whether to print the symbolic name "raw" or demangled. | |
763 | Global setting "addressprint" controls whether to print hex address | |
764 | or not. */ | |
765 | ||
766 | void | |
767 | print_address_demangle (addr, stream, do_demangle) | |
768 | CORE_ADDR addr; | |
d9fcf2fb | 769 | struct ui_file *stream; |
c906108c SS |
770 | int do_demangle; |
771 | { | |
772 | if (addr == 0) | |
773 | { | |
774 | fprintf_filtered (stream, "0"); | |
775 | } | |
776 | else if (addressprint) | |
777 | { | |
778 | print_address_numeric (addr, 1, stream); | |
779 | print_address_symbolic (addr, stream, do_demangle, " "); | |
780 | } | |
781 | else | |
782 | { | |
783 | print_address_symbolic (addr, stream, do_demangle, ""); | |
784 | } | |
785 | } | |
786 | \f | |
787 | ||
788 | /* These are the types that $__ will get after an examine command of one | |
789 | of these sizes. */ | |
790 | ||
791 | static struct type *examine_i_type; | |
792 | ||
793 | static struct type *examine_b_type; | |
794 | static struct type *examine_h_type; | |
795 | static struct type *examine_w_type; | |
796 | static struct type *examine_g_type; | |
797 | ||
798 | /* Examine data at address ADDR in format FMT. | |
799 | Fetch it from memory and print on gdb_stdout. */ | |
800 | ||
801 | static void | |
802 | do_examine (fmt, addr, sect) | |
803 | struct format_data fmt; | |
804 | CORE_ADDR addr; | |
805 | asection *sect; | |
806 | { | |
807 | register char format = 0; | |
808 | register char size; | |
809 | register int count = 1; | |
810 | struct type *val_type = NULL; | |
811 | register int i; | |
812 | register int maxelts; | |
813 | ||
814 | format = fmt.format; | |
815 | size = fmt.size; | |
816 | count = fmt.count; | |
817 | next_address = addr; | |
818 | next_section = sect; | |
819 | ||
820 | /* String or instruction format implies fetch single bytes | |
821 | regardless of the specified size. */ | |
822 | if (format == 's' || format == 'i') | |
823 | size = 'b'; | |
824 | ||
825 | if (format == 'i') | |
826 | val_type = examine_i_type; | |
827 | else if (size == 'b') | |
828 | val_type = examine_b_type; | |
829 | else if (size == 'h') | |
830 | val_type = examine_h_type; | |
831 | else if (size == 'w') | |
832 | val_type = examine_w_type; | |
833 | else if (size == 'g') | |
834 | val_type = examine_g_type; | |
835 | ||
836 | maxelts = 8; | |
837 | if (size == 'w') | |
838 | maxelts = 4; | |
839 | if (size == 'g') | |
840 | maxelts = 2; | |
841 | if (format == 's' || format == 'i') | |
842 | maxelts = 1; | |
843 | ||
844 | /* Print as many objects as specified in COUNT, at most maxelts per line, | |
845 | with the address of the next one at the start of each line. */ | |
846 | ||
847 | while (count > 0) | |
848 | { | |
849 | QUIT; | |
850 | print_address (next_address, gdb_stdout); | |
851 | printf_filtered (":"); | |
852 | for (i = maxelts; | |
853 | i > 0 && count > 0; | |
854 | i--, count--) | |
855 | { | |
856 | printf_filtered ("\t"); | |
857 | /* Note that print_formatted sets next_address for the next | |
858 | object. */ | |
859 | last_examine_address = next_address; | |
860 | ||
861 | if (last_examine_value) | |
862 | value_free (last_examine_value); | |
863 | ||
864 | /* The value to be displayed is not fetched greedily. | |
c5aa993b JM |
865 | Instead, to avoid the posibility of a fetched value not |
866 | being used, its retreval is delayed until the print code | |
867 | uses it. When examining an instruction stream, the | |
868 | disassembler will perform its own memory fetch using just | |
869 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
870 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
871 | is left with the byte sequence from the last complete | |
872 | instruction fetched from memory? */ | |
c906108c SS |
873 | last_examine_value = value_at_lazy (val_type, next_address, sect); |
874 | ||
875 | if (last_examine_value) | |
876 | release_value (last_examine_value); | |
877 | ||
2acceee2 | 878 | print_formatted (last_examine_value, format, size, gdb_stdout); |
c906108c SS |
879 | } |
880 | printf_filtered ("\n"); | |
881 | gdb_flush (gdb_stdout); | |
882 | } | |
883 | } | |
884 | \f | |
885 | static void | |
886 | validate_format (fmt, cmdname) | |
887 | struct format_data fmt; | |
888 | char *cmdname; | |
889 | { | |
890 | if (fmt.size != 0) | |
891 | error ("Size letters are meaningless in \"%s\" command.", cmdname); | |
892 | if (fmt.count != 1) | |
893 | error ("Item count other than 1 is meaningless in \"%s\" command.", | |
894 | cmdname); | |
895 | if (fmt.format == 'i' || fmt.format == 's') | |
896 | error ("Format letter \"%c\" is meaningless in \"%s\" command.", | |
897 | fmt.format, cmdname); | |
898 | } | |
899 | ||
900 | /* Evaluate string EXP as an expression in the current language and | |
c5aa993b JM |
901 | print the resulting value. EXP may contain a format specifier as the |
902 | first argument ("/x myvar" for example, to print myvar in hex). | |
903 | */ | |
c906108c SS |
904 | |
905 | static void | |
906 | print_command_1 (exp, inspect, voidprint) | |
907 | char *exp; | |
908 | int inspect; | |
909 | int voidprint; | |
910 | { | |
911 | struct expression *expr; | |
912 | register struct cleanup *old_chain = 0; | |
913 | register char format = 0; | |
914 | register value_ptr val; | |
915 | struct format_data fmt; | |
916 | int cleanup = 0; | |
917 | ||
918 | /* Pass inspect flag to the rest of the print routines in a global (sigh). */ | |
919 | inspect_it = inspect; | |
920 | ||
921 | if (exp && *exp == '/') | |
922 | { | |
923 | exp++; | |
924 | fmt = decode_format (&exp, last_format, 0); | |
925 | validate_format (fmt, "print"); | |
926 | last_format = format = fmt.format; | |
927 | } | |
928 | else | |
929 | { | |
930 | fmt.count = 1; | |
931 | fmt.format = 0; | |
932 | fmt.size = 0; | |
933 | } | |
934 | ||
935 | if (exp && *exp) | |
936 | { | |
c906108c SS |
937 | struct type *type; |
938 | expr = parse_expression (exp); | |
c13c43fd | 939 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
940 | cleanup = 1; |
941 | val = evaluate_expression (expr); | |
942 | ||
943 | /* C++: figure out what type we actually want to print it as. */ | |
944 | type = VALUE_TYPE (val); | |
945 | ||
946 | if (objectprint | |
c5aa993b | 947 | && (TYPE_CODE (type) == TYPE_CODE_PTR |
c906108c | 948 | || TYPE_CODE (type) == TYPE_CODE_REF) |
c5aa993b | 949 | && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRUCT |
c906108c SS |
950 | || TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_UNION)) |
951 | { | |
952 | value_ptr v; | |
953 | ||
954 | v = value_from_vtable_info (val, TYPE_TARGET_TYPE (type)); | |
955 | if (v != 0) | |
956 | { | |
957 | val = v; | |
958 | type = VALUE_TYPE (val); | |
959 | } | |
960 | } | |
961 | } | |
962 | else | |
963 | val = access_value_history (0); | |
964 | ||
965 | if (voidprint || (val && VALUE_TYPE (val) && | |
c5aa993b | 966 | TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_VOID)) |
c906108c SS |
967 | { |
968 | int histindex = record_latest_value (val); | |
969 | ||
970 | if (histindex >= 0) | |
971 | annotate_value_history_begin (histindex, VALUE_TYPE (val)); | |
972 | else | |
973 | annotate_value_begin (VALUE_TYPE (val)); | |
974 | ||
975 | if (inspect) | |
976 | printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"", exp, histindex); | |
c5aa993b JM |
977 | else if (histindex >= 0) |
978 | printf_filtered ("$%d = ", histindex); | |
c906108c SS |
979 | |
980 | if (histindex >= 0) | |
981 | annotate_value_history_value (); | |
982 | ||
2acceee2 | 983 | print_formatted (val, format, fmt.size, gdb_stdout); |
c906108c SS |
984 | printf_filtered ("\n"); |
985 | ||
986 | if (histindex >= 0) | |
987 | annotate_value_history_end (); | |
988 | else | |
989 | annotate_value_end (); | |
990 | ||
991 | if (inspect) | |
c5aa993b | 992 | printf_unfiltered ("\") )\030"); |
c906108c SS |
993 | } |
994 | ||
995 | if (cleanup) | |
996 | do_cleanups (old_chain); | |
c5aa993b | 997 | inspect_it = 0; /* Reset print routines to normal */ |
c906108c SS |
998 | } |
999 | ||
1000 | /* ARGSUSED */ | |
1001 | static void | |
1002 | print_command (exp, from_tty) | |
1003 | char *exp; | |
1004 | int from_tty; | |
1005 | { | |
1006 | print_command_1 (exp, 0, 1); | |
1007 | } | |
1008 | ||
1009 | /* Same as print, except in epoch, it gets its own window */ | |
1010 | /* ARGSUSED */ | |
1011 | static void | |
1012 | inspect_command (exp, from_tty) | |
1013 | char *exp; | |
1014 | int from_tty; | |
1015 | { | |
1016 | extern int epoch_interface; | |
1017 | ||
1018 | print_command_1 (exp, epoch_interface, 1); | |
1019 | } | |
1020 | ||
1021 | /* Same as print, except it doesn't print void results. */ | |
1022 | /* ARGSUSED */ | |
1023 | static void | |
1024 | call_command (exp, from_tty) | |
1025 | char *exp; | |
1026 | int from_tty; | |
1027 | { | |
1028 | print_command_1 (exp, 0, 0); | |
1029 | } | |
1030 | ||
1031 | /* ARGSUSED */ | |
1032 | void | |
1033 | output_command (exp, from_tty) | |
1034 | char *exp; | |
1035 | int from_tty; | |
1036 | { | |
1037 | struct expression *expr; | |
1038 | register struct cleanup *old_chain; | |
1039 | register char format = 0; | |
1040 | register value_ptr val; | |
1041 | struct format_data fmt; | |
1042 | ||
1043 | if (exp && *exp == '/') | |
1044 | { | |
1045 | exp++; | |
1046 | fmt = decode_format (&exp, 0, 0); | |
1047 | validate_format (fmt, "output"); | |
1048 | format = fmt.format; | |
1049 | } | |
1050 | ||
1051 | expr = parse_expression (exp); | |
c13c43fd | 1052 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
1053 | |
1054 | val = evaluate_expression (expr); | |
1055 | ||
1056 | annotate_value_begin (VALUE_TYPE (val)); | |
1057 | ||
2acceee2 | 1058 | print_formatted (val, format, fmt.size, gdb_stdout); |
c906108c SS |
1059 | |
1060 | annotate_value_end (); | |
1061 | ||
2acceee2 JM |
1062 | wrap_here (""); |
1063 | gdb_flush (gdb_stdout); | |
1064 | ||
c906108c SS |
1065 | do_cleanups (old_chain); |
1066 | } | |
1067 | ||
1068 | /* ARGSUSED */ | |
1069 | static void | |
1070 | set_command (exp, from_tty) | |
1071 | char *exp; | |
1072 | int from_tty; | |
1073 | { | |
1074 | struct expression *expr = parse_expression (exp); | |
c13c43fd PDM |
1075 | register struct cleanup *old_chain = |
1076 | make_cleanup (free_current_contents, &expr); | |
c906108c SS |
1077 | evaluate_expression (expr); |
1078 | do_cleanups (old_chain); | |
1079 | } | |
1080 | ||
1081 | /* ARGSUSED */ | |
1082 | static void | |
1083 | sym_info (arg, from_tty) | |
1084 | char *arg; | |
c5aa993b | 1085 | int from_tty; |
c906108c SS |
1086 | { |
1087 | struct minimal_symbol *msymbol; | |
c5aa993b JM |
1088 | struct objfile *objfile; |
1089 | struct obj_section *osect; | |
1090 | asection *sect; | |
1091 | CORE_ADDR addr, sect_addr; | |
1092 | int matches = 0; | |
1093 | unsigned int offset; | |
c906108c SS |
1094 | |
1095 | if (!arg) | |
1096 | error_no_arg ("address"); | |
1097 | ||
1098 | addr = parse_and_eval_address (arg); | |
1099 | ALL_OBJSECTIONS (objfile, osect) | |
c5aa993b JM |
1100 | { |
1101 | sect = osect->the_bfd_section; | |
1102 | sect_addr = overlay_mapped_address (addr, sect); | |
c906108c | 1103 | |
c5aa993b JM |
1104 | if (osect->addr <= sect_addr && sect_addr < osect->endaddr && |
1105 | (msymbol = lookup_minimal_symbol_by_pc_section (sect_addr, sect))) | |
1106 | { | |
1107 | matches = 1; | |
1108 | offset = sect_addr - SYMBOL_VALUE_ADDRESS (msymbol); | |
1109 | if (offset) | |
1110 | printf_filtered ("%s + %u in ", | |
1111 | SYMBOL_SOURCE_NAME (msymbol), offset); | |
1112 | else | |
1113 | printf_filtered ("%s in ", | |
1114 | SYMBOL_SOURCE_NAME (msymbol)); | |
1115 | if (pc_in_unmapped_range (addr, sect)) | |
1116 | printf_filtered ("load address range of "); | |
1117 | if (section_is_overlay (sect)) | |
1118 | printf_filtered ("%s overlay ", | |
1119 | section_is_mapped (sect) ? "mapped" : "unmapped"); | |
1120 | printf_filtered ("section %s", sect->name); | |
1121 | printf_filtered ("\n"); | |
1122 | } | |
1123 | } | |
c906108c SS |
1124 | if (matches == 0) |
1125 | printf_filtered ("No symbol matches %s.\n", arg); | |
1126 | } | |
1127 | ||
1128 | /* ARGSUSED */ | |
1129 | static void | |
1130 | address_info (exp, from_tty) | |
1131 | char *exp; | |
1132 | int from_tty; | |
1133 | { | |
1134 | register struct symbol *sym; | |
1135 | register struct minimal_symbol *msymbol; | |
1136 | register long val; | |
1137 | register long basereg; | |
1138 | asection *section; | |
1139 | CORE_ADDR load_addr; | |
1140 | int is_a_field_of_this; /* C++: lookup_symbol sets this to nonzero | |
1141 | if exp is a field of `this'. */ | |
1142 | ||
1143 | if (exp == 0) | |
1144 | error ("Argument required."); | |
1145 | ||
c5aa993b JM |
1146 | sym = lookup_symbol (exp, get_selected_block (), VAR_NAMESPACE, |
1147 | &is_a_field_of_this, (struct symtab **) NULL); | |
c906108c SS |
1148 | if (sym == NULL) |
1149 | { | |
1150 | if (is_a_field_of_this) | |
1151 | { | |
1152 | printf_filtered ("Symbol \""); | |
1153 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1154 | current_language->la_language, DMGL_ANSI); | |
1155 | printf_filtered ("\" is a field of the local class variable `this'\n"); | |
1156 | return; | |
1157 | } | |
1158 | ||
1159 | msymbol = lookup_minimal_symbol (exp, NULL, NULL); | |
1160 | ||
1161 | if (msymbol != NULL) | |
1162 | { | |
1163 | load_addr = SYMBOL_VALUE_ADDRESS (msymbol); | |
1164 | ||
1165 | printf_filtered ("Symbol \""); | |
1166 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1167 | current_language->la_language, DMGL_ANSI); | |
1168 | printf_filtered ("\" is at "); | |
1169 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1170 | printf_filtered (" in a file compiled without debugging"); | |
1171 | section = SYMBOL_BFD_SECTION (msymbol); | |
1172 | if (section_is_overlay (section)) | |
1173 | { | |
1174 | load_addr = overlay_unmapped_address (load_addr, section); | |
1175 | printf_filtered (",\n -- loaded at "); | |
1176 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1177 | printf_filtered (" in overlay section %s", section->name); | |
1178 | } | |
1179 | printf_filtered (".\n"); | |
1180 | } | |
1181 | else | |
1182 | error ("No symbol \"%s\" in current context.", exp); | |
1183 | return; | |
1184 | } | |
1185 | ||
1186 | printf_filtered ("Symbol \""); | |
1187 | fprintf_symbol_filtered (gdb_stdout, SYMBOL_NAME (sym), | |
1188 | current_language->la_language, DMGL_ANSI); | |
1189 | printf_filtered ("\" is "); | |
c5aa993b | 1190 | val = SYMBOL_VALUE (sym); |
c906108c SS |
1191 | basereg = SYMBOL_BASEREG (sym); |
1192 | section = SYMBOL_BFD_SECTION (sym); | |
1193 | ||
1194 | switch (SYMBOL_CLASS (sym)) | |
1195 | { | |
1196 | case LOC_CONST: | |
1197 | case LOC_CONST_BYTES: | |
1198 | printf_filtered ("constant"); | |
1199 | break; | |
1200 | ||
1201 | case LOC_LABEL: | |
1202 | printf_filtered ("a label at address "); | |
c5aa993b | 1203 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym), |
c906108c SS |
1204 | 1, gdb_stdout); |
1205 | if (section_is_overlay (section)) | |
1206 | { | |
1207 | load_addr = overlay_unmapped_address (load_addr, section); | |
1208 | printf_filtered (",\n -- loaded at "); | |
1209 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1210 | printf_filtered (" in overlay section %s", section->name); | |
1211 | } | |
1212 | break; | |
1213 | ||
1214 | case LOC_REGISTER: | |
1215 | printf_filtered ("a variable in register %s", REGISTER_NAME (val)); | |
1216 | break; | |
1217 | ||
1218 | case LOC_STATIC: | |
1219 | printf_filtered ("static storage at address "); | |
c5aa993b | 1220 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym), |
c906108c SS |
1221 | 1, gdb_stdout); |
1222 | if (section_is_overlay (section)) | |
1223 | { | |
1224 | load_addr = overlay_unmapped_address (load_addr, section); | |
1225 | printf_filtered (",\n -- loaded at "); | |
1226 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1227 | printf_filtered (" in overlay section %s", section->name); | |
1228 | } | |
1229 | break; | |
1230 | ||
1231 | case LOC_INDIRECT: | |
1232 | printf_filtered ("external global (indirect addressing), at address *("); | |
1233 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym), | |
1234 | 1, gdb_stdout); | |
1235 | printf_filtered (")"); | |
1236 | if (section_is_overlay (section)) | |
1237 | { | |
1238 | load_addr = overlay_unmapped_address (load_addr, section); | |
1239 | printf_filtered (",\n -- loaded at "); | |
1240 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1241 | printf_filtered (" in overlay section %s", section->name); | |
1242 | } | |
1243 | break; | |
1244 | ||
1245 | case LOC_REGPARM: | |
1246 | printf_filtered ("an argument in register %s", REGISTER_NAME (val)); | |
1247 | break; | |
1248 | ||
1249 | case LOC_REGPARM_ADDR: | |
1250 | printf_filtered ("address of an argument in register %s", REGISTER_NAME (val)); | |
1251 | break; | |
1252 | ||
1253 | case LOC_ARG: | |
1254 | printf_filtered ("an argument at offset %ld", val); | |
1255 | break; | |
1256 | ||
1257 | case LOC_LOCAL_ARG: | |
1258 | printf_filtered ("an argument at frame offset %ld", val); | |
1259 | break; | |
1260 | ||
1261 | case LOC_LOCAL: | |
1262 | printf_filtered ("a local variable at frame offset %ld", val); | |
1263 | break; | |
1264 | ||
1265 | case LOC_REF_ARG: | |
1266 | printf_filtered ("a reference argument at offset %ld", val); | |
1267 | break; | |
1268 | ||
1269 | case LOC_BASEREG: | |
1270 | printf_filtered ("a variable at offset %ld from register %s", | |
c5aa993b | 1271 | val, REGISTER_NAME (basereg)); |
c906108c SS |
1272 | break; |
1273 | ||
1274 | case LOC_BASEREG_ARG: | |
1275 | printf_filtered ("an argument at offset %ld from register %s", | |
c5aa993b | 1276 | val, REGISTER_NAME (basereg)); |
c906108c SS |
1277 | break; |
1278 | ||
1279 | case LOC_TYPEDEF: | |
1280 | printf_filtered ("a typedef"); | |
1281 | break; | |
1282 | ||
1283 | case LOC_BLOCK: | |
1284 | printf_filtered ("a function at address "); | |
1285 | #ifdef GDB_TARGET_MASK_DISAS_PC | |
1286 | print_address_numeric | |
c5aa993b | 1287 | (load_addr = GDB_TARGET_MASK_DISAS_PC (BLOCK_START (SYMBOL_BLOCK_VALUE (sym))), |
c906108c SS |
1288 | 1, gdb_stdout); |
1289 | #else | |
c5aa993b | 1290 | print_address_numeric (load_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)), |
c906108c SS |
1291 | 1, gdb_stdout); |
1292 | #endif | |
1293 | if (section_is_overlay (section)) | |
1294 | { | |
1295 | load_addr = overlay_unmapped_address (load_addr, section); | |
1296 | printf_filtered (",\n -- loaded at "); | |
1297 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1298 | printf_filtered (" in overlay section %s", section->name); | |
1299 | } | |
1300 | break; | |
1301 | ||
1302 | case LOC_UNRESOLVED: | |
1303 | { | |
1304 | struct minimal_symbol *msym; | |
1305 | ||
1306 | msym = lookup_minimal_symbol (SYMBOL_NAME (sym), NULL, NULL); | |
1307 | if (msym == NULL) | |
1308 | printf_filtered ("unresolved"); | |
1309 | else | |
1310 | { | |
1311 | section = SYMBOL_BFD_SECTION (msym); | |
1312 | printf_filtered ("static storage at address "); | |
c5aa993b | 1313 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (msym), |
c906108c SS |
1314 | 1, gdb_stdout); |
1315 | if (section_is_overlay (section)) | |
1316 | { | |
1317 | load_addr = overlay_unmapped_address (load_addr, section); | |
1318 | printf_filtered (",\n -- loaded at "); | |
1319 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1320 | printf_filtered (" in overlay section %s", section->name); | |
1321 | } | |
1322 | } | |
1323 | } | |
1324 | break; | |
1325 | ||
1326 | case LOC_THREAD_LOCAL_STATIC: | |
1327 | printf_filtered ( | |
c5aa993b JM |
1328 | "a thread-local variable at offset %ld from the thread base register %s", |
1329 | val, REGISTER_NAME (basereg)); | |
c906108c SS |
1330 | break; |
1331 | ||
1332 | case LOC_OPTIMIZED_OUT: | |
1333 | printf_filtered ("optimized out"); | |
1334 | break; | |
c5aa993b | 1335 | |
c906108c SS |
1336 | default: |
1337 | printf_filtered ("of unknown (botched) type"); | |
1338 | break; | |
1339 | } | |
1340 | printf_filtered (".\n"); | |
1341 | } | |
1342 | \f | |
1343 | void | |
1344 | x_command (exp, from_tty) | |
1345 | char *exp; | |
1346 | int from_tty; | |
1347 | { | |
1348 | struct expression *expr; | |
1349 | struct format_data fmt; | |
1350 | struct cleanup *old_chain; | |
1351 | struct value *val; | |
1352 | ||
1353 | fmt.format = last_format; | |
1354 | fmt.size = last_size; | |
1355 | fmt.count = 1; | |
1356 | ||
1357 | if (exp && *exp == '/') | |
1358 | { | |
1359 | exp++; | |
1360 | fmt = decode_format (&exp, last_format, last_size); | |
1361 | } | |
1362 | ||
1363 | /* If we have an expression, evaluate it and use it as the address. */ | |
1364 | ||
1365 | if (exp != 0 && *exp != 0) | |
1366 | { | |
1367 | expr = parse_expression (exp); | |
1368 | /* Cause expression not to be there any more | |
c5aa993b JM |
1369 | if this command is repeated with Newline. |
1370 | But don't clobber a user-defined command's definition. */ | |
c906108c SS |
1371 | if (from_tty) |
1372 | *exp = 0; | |
c13c43fd | 1373 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
1374 | val = evaluate_expression (expr); |
1375 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_REF) | |
1376 | val = value_ind (val); | |
1377 | /* In rvalue contexts, such as this, functions are coerced into | |
c5aa993b JM |
1378 | pointers to functions. This makes "x/i main" work. */ |
1379 | if ( /* last_format == 'i' | |
1380 | && */ TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_FUNC | |
1381 | && VALUE_LVAL (val) == lval_memory) | |
c906108c SS |
1382 | next_address = VALUE_ADDRESS (val); |
1383 | else | |
1384 | next_address = value_as_pointer (val); | |
1385 | if (VALUE_BFD_SECTION (val)) | |
1386 | next_section = VALUE_BFD_SECTION (val); | |
1387 | do_cleanups (old_chain); | |
1388 | } | |
1389 | ||
1390 | do_examine (fmt, next_address, next_section); | |
1391 | ||
1392 | /* If the examine succeeds, we remember its size and format for next time. */ | |
1393 | last_size = fmt.size; | |
1394 | last_format = fmt.format; | |
1395 | ||
1396 | /* Set a couple of internal variables if appropriate. */ | |
1397 | if (last_examine_value) | |
1398 | { | |
1399 | /* Make last address examined available to the user as $_. Use | |
c5aa993b | 1400 | the correct pointer type. */ |
4478b372 JB |
1401 | struct type *pointer_type |
1402 | = lookup_pointer_type (VALUE_TYPE (last_examine_value)); | |
c906108c | 1403 | set_internalvar (lookup_internalvar ("_"), |
4478b372 JB |
1404 | value_from_pointer (pointer_type, |
1405 | last_examine_address)); | |
c5aa993b JM |
1406 | |
1407 | /* Make contents of last address examined available to the user as $__. */ | |
c906108c SS |
1408 | /* If the last value has not been fetched from memory then don't |
1409 | fetch it now - instead mark it by voiding the $__ variable. */ | |
1410 | if (VALUE_LAZY (last_examine_value)) | |
1411 | set_internalvar (lookup_internalvar ("__"), | |
1412 | allocate_value (builtin_type_void)); | |
1413 | else | |
1414 | set_internalvar (lookup_internalvar ("__"), last_examine_value); | |
1415 | } | |
1416 | } | |
c906108c | 1417 | \f |
c5aa993b | 1418 | |
c906108c SS |
1419 | /* Add an expression to the auto-display chain. |
1420 | Specify the expression. */ | |
1421 | ||
1422 | static void | |
1423 | display_command (exp, from_tty) | |
1424 | char *exp; | |
1425 | int from_tty; | |
1426 | { | |
1427 | struct format_data fmt; | |
1428 | register struct expression *expr; | |
1429 | register struct display *new; | |
1430 | int display_it = 1; | |
1431 | ||
1432 | #if defined(TUI) | |
1433 | if (tui_version && *exp == '$') | |
c5aa993b JM |
1434 | display_it = ((TuiStatus) tuiDo ( |
1435 | (TuiOpaqueFuncPtr) tui_vSetLayoutTo, exp) == TUI_FAILURE); | |
c906108c SS |
1436 | #endif |
1437 | ||
1438 | if (display_it) | |
1439 | { | |
1440 | if (exp == 0) | |
1441 | { | |
1442 | do_displays (); | |
1443 | return; | |
1444 | } | |
1445 | ||
1446 | if (*exp == '/') | |
1447 | { | |
1448 | exp++; | |
1449 | fmt = decode_format (&exp, 0, 0); | |
1450 | if (fmt.size && fmt.format == 0) | |
1451 | fmt.format = 'x'; | |
1452 | if (fmt.format == 'i' || fmt.format == 's') | |
1453 | fmt.size = 'b'; | |
1454 | } | |
1455 | else | |
1456 | { | |
1457 | fmt.format = 0; | |
1458 | fmt.size = 0; | |
1459 | fmt.count = 0; | |
1460 | } | |
1461 | ||
1462 | innermost_block = 0; | |
1463 | expr = parse_expression (exp); | |
1464 | ||
1465 | new = (struct display *) xmalloc (sizeof (struct display)); | |
1466 | ||
1467 | new->exp = expr; | |
1468 | new->block = innermost_block; | |
1469 | new->next = display_chain; | |
1470 | new->number = ++display_number; | |
1471 | new->format = fmt; | |
1472 | new->status = enabled; | |
1473 | display_chain = new; | |
1474 | ||
1475 | if (from_tty && target_has_execution) | |
1476 | do_one_display (new); | |
1477 | ||
1478 | dont_repeat (); | |
1479 | } | |
1480 | } | |
1481 | ||
1482 | static void | |
1483 | free_display (d) | |
1484 | struct display *d; | |
1485 | { | |
c5aa993b JM |
1486 | free ((PTR) d->exp); |
1487 | free ((PTR) d); | |
c906108c SS |
1488 | } |
1489 | ||
1490 | /* Clear out the display_chain. | |
1491 | Done when new symtabs are loaded, since this invalidates | |
1492 | the types stored in many expressions. */ | |
1493 | ||
1494 | void | |
1495 | clear_displays () | |
1496 | { | |
1497 | register struct display *d; | |
1498 | ||
1499 | while ((d = display_chain) != NULL) | |
1500 | { | |
c5aa993b | 1501 | free ((PTR) d->exp); |
c906108c | 1502 | display_chain = d->next; |
c5aa993b | 1503 | free ((PTR) d); |
c906108c SS |
1504 | } |
1505 | } | |
1506 | ||
1507 | /* Delete the auto-display number NUM. */ | |
1508 | ||
1509 | static void | |
1510 | delete_display (num) | |
1511 | int num; | |
1512 | { | |
1513 | register struct display *d1, *d; | |
1514 | ||
1515 | if (!display_chain) | |
1516 | error ("No display number %d.", num); | |
1517 | ||
1518 | if (display_chain->number == num) | |
1519 | { | |
1520 | d1 = display_chain; | |
1521 | display_chain = d1->next; | |
1522 | free_display (d1); | |
1523 | } | |
1524 | else | |
c5aa993b | 1525 | for (d = display_chain;; d = d->next) |
c906108c SS |
1526 | { |
1527 | if (d->next == 0) | |
1528 | error ("No display number %d.", num); | |
1529 | if (d->next->number == num) | |
1530 | { | |
1531 | d1 = d->next; | |
1532 | d->next = d1->next; | |
1533 | free_display (d1); | |
1534 | break; | |
1535 | } | |
1536 | } | |
1537 | } | |
1538 | ||
1539 | /* Delete some values from the auto-display chain. | |
1540 | Specify the element numbers. */ | |
1541 | ||
1542 | static void | |
1543 | undisplay_command (args, from_tty) | |
1544 | char *args; | |
1545 | int from_tty; | |
1546 | { | |
1547 | register char *p = args; | |
1548 | register char *p1; | |
1549 | register int num; | |
1550 | ||
1551 | if (args == 0) | |
1552 | { | |
1553 | if (query ("Delete all auto-display expressions? ")) | |
1554 | clear_displays (); | |
1555 | dont_repeat (); | |
1556 | return; | |
1557 | } | |
1558 | ||
1559 | while (*p) | |
1560 | { | |
1561 | p1 = p; | |
c5aa993b JM |
1562 | while (*p1 >= '0' && *p1 <= '9') |
1563 | p1++; | |
c906108c SS |
1564 | if (*p1 && *p1 != ' ' && *p1 != '\t') |
1565 | error ("Arguments must be display numbers."); | |
1566 | ||
1567 | num = atoi (p); | |
1568 | ||
1569 | delete_display (num); | |
1570 | ||
1571 | p = p1; | |
c5aa993b JM |
1572 | while (*p == ' ' || *p == '\t') |
1573 | p++; | |
c906108c SS |
1574 | } |
1575 | dont_repeat (); | |
1576 | } | |
1577 | ||
1578 | /* Display a single auto-display. | |
1579 | Do nothing if the display cannot be printed in the current context, | |
1580 | or if the display is disabled. */ | |
1581 | ||
1582 | static void | |
1583 | do_one_display (d) | |
1584 | struct display *d; | |
1585 | { | |
1586 | int within_current_scope; | |
1587 | ||
1588 | if (d->status == disabled) | |
1589 | return; | |
1590 | ||
1591 | if (d->block) | |
1592 | within_current_scope = contained_in (get_selected_block (), d->block); | |
1593 | else | |
1594 | within_current_scope = 1; | |
1595 | if (!within_current_scope) | |
1596 | return; | |
1597 | ||
1598 | current_display_number = d->number; | |
1599 | ||
1600 | annotate_display_begin (); | |
1601 | printf_filtered ("%d", d->number); | |
1602 | annotate_display_number_end (); | |
1603 | printf_filtered (": "); | |
1604 | if (d->format.size) | |
1605 | { | |
1606 | CORE_ADDR addr; | |
1607 | value_ptr val; | |
1608 | ||
1609 | annotate_display_format (); | |
1610 | ||
1611 | printf_filtered ("x/"); | |
1612 | if (d->format.count != 1) | |
1613 | printf_filtered ("%d", d->format.count); | |
1614 | printf_filtered ("%c", d->format.format); | |
1615 | if (d->format.format != 'i' && d->format.format != 's') | |
1616 | printf_filtered ("%c", d->format.size); | |
1617 | printf_filtered (" "); | |
1618 | ||
1619 | annotate_display_expression (); | |
1620 | ||
1621 | print_expression (d->exp, gdb_stdout); | |
1622 | annotate_display_expression_end (); | |
1623 | ||
1624 | if (d->format.count != 1) | |
1625 | printf_filtered ("\n"); | |
1626 | else | |
1627 | printf_filtered (" "); | |
c5aa993b | 1628 | |
c906108c SS |
1629 | val = evaluate_expression (d->exp); |
1630 | addr = value_as_pointer (val); | |
1631 | if (d->format.format == 'i') | |
1632 | addr = ADDR_BITS_REMOVE (addr); | |
1633 | ||
1634 | annotate_display_value (); | |
1635 | ||
1636 | do_examine (d->format, addr, VALUE_BFD_SECTION (val)); | |
1637 | } | |
1638 | else | |
1639 | { | |
1640 | annotate_display_format (); | |
1641 | ||
1642 | if (d->format.format) | |
1643 | printf_filtered ("/%c ", d->format.format); | |
1644 | ||
1645 | annotate_display_expression (); | |
1646 | ||
1647 | print_expression (d->exp, gdb_stdout); | |
1648 | annotate_display_expression_end (); | |
1649 | ||
1650 | printf_filtered (" = "); | |
1651 | ||
1652 | annotate_display_expression (); | |
1653 | ||
1654 | print_formatted (evaluate_expression (d->exp), | |
2acceee2 | 1655 | d->format.format, d->format.size, gdb_stdout); |
c906108c SS |
1656 | printf_filtered ("\n"); |
1657 | } | |
1658 | ||
1659 | annotate_display_end (); | |
1660 | ||
1661 | gdb_flush (gdb_stdout); | |
1662 | current_display_number = -1; | |
1663 | } | |
1664 | ||
1665 | /* Display all of the values on the auto-display chain which can be | |
1666 | evaluated in the current scope. */ | |
1667 | ||
1668 | void | |
1669 | do_displays () | |
1670 | { | |
1671 | register struct display *d; | |
1672 | ||
1673 | for (d = display_chain; d; d = d->next) | |
1674 | do_one_display (d); | |
1675 | } | |
1676 | ||
1677 | /* Delete the auto-display which we were in the process of displaying. | |
1678 | This is done when there is an error or a signal. */ | |
1679 | ||
1680 | void | |
1681 | disable_display (num) | |
1682 | int num; | |
1683 | { | |
1684 | register struct display *d; | |
1685 | ||
1686 | for (d = display_chain; d; d = d->next) | |
1687 | if (d->number == num) | |
1688 | { | |
1689 | d->status = disabled; | |
1690 | return; | |
1691 | } | |
1692 | printf_unfiltered ("No display number %d.\n", num); | |
1693 | } | |
c5aa993b | 1694 | |
c906108c SS |
1695 | void |
1696 | disable_current_display () | |
1697 | { | |
1698 | if (current_display_number >= 0) | |
1699 | { | |
1700 | disable_display (current_display_number); | |
1701 | fprintf_unfiltered (gdb_stderr, "Disabling display %d to avoid infinite recursion.\n", | |
c5aa993b | 1702 | current_display_number); |
c906108c SS |
1703 | } |
1704 | current_display_number = -1; | |
1705 | } | |
1706 | ||
1707 | static void | |
1708 | display_info (ignore, from_tty) | |
1709 | char *ignore; | |
1710 | int from_tty; | |
1711 | { | |
1712 | register struct display *d; | |
1713 | ||
1714 | if (!display_chain) | |
1715 | printf_unfiltered ("There are no auto-display expressions now.\n"); | |
1716 | else | |
c5aa993b | 1717 | printf_filtered ("Auto-display expressions now in effect:\n\ |
c906108c SS |
1718 | Num Enb Expression\n"); |
1719 | ||
1720 | for (d = display_chain; d; d = d->next) | |
1721 | { | |
c5aa993b | 1722 | printf_filtered ("%d: %c ", d->number, "ny"[(int) d->status]); |
c906108c SS |
1723 | if (d->format.size) |
1724 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
c5aa993b | 1725 | d->format.format); |
c906108c SS |
1726 | else if (d->format.format) |
1727 | printf_filtered ("/%c ", d->format.format); | |
1728 | print_expression (d->exp, gdb_stdout); | |
1729 | if (d->block && !contained_in (get_selected_block (), d->block)) | |
1730 | printf_filtered (" (cannot be evaluated in the current context)"); | |
1731 | printf_filtered ("\n"); | |
1732 | gdb_flush (gdb_stdout); | |
1733 | } | |
1734 | } | |
1735 | ||
1736 | static void | |
1737 | enable_display (args, from_tty) | |
1738 | char *args; | |
1739 | int from_tty; | |
1740 | { | |
1741 | register char *p = args; | |
1742 | register char *p1; | |
1743 | register int num; | |
1744 | register struct display *d; | |
1745 | ||
1746 | if (p == 0) | |
1747 | { | |
1748 | for (d = display_chain; d; d = d->next) | |
1749 | d->status = enabled; | |
1750 | } | |
1751 | else | |
1752 | while (*p) | |
1753 | { | |
1754 | p1 = p; | |
1755 | while (*p1 >= '0' && *p1 <= '9') | |
1756 | p1++; | |
1757 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
1758 | error ("Arguments must be display numbers."); | |
c5aa993b | 1759 | |
c906108c | 1760 | num = atoi (p); |
c5aa993b | 1761 | |
c906108c SS |
1762 | for (d = display_chain; d; d = d->next) |
1763 | if (d->number == num) | |
1764 | { | |
1765 | d->status = enabled; | |
1766 | goto win; | |
1767 | } | |
1768 | printf_unfiltered ("No display number %d.\n", num); | |
1769 | win: | |
1770 | p = p1; | |
1771 | while (*p == ' ' || *p == '\t') | |
1772 | p++; | |
1773 | } | |
1774 | } | |
1775 | ||
1776 | /* ARGSUSED */ | |
1777 | static void | |
1778 | disable_display_command (args, from_tty) | |
1779 | char *args; | |
1780 | int from_tty; | |
1781 | { | |
1782 | register char *p = args; | |
1783 | register char *p1; | |
1784 | register struct display *d; | |
1785 | ||
1786 | if (p == 0) | |
1787 | { | |
1788 | for (d = display_chain; d; d = d->next) | |
1789 | d->status = disabled; | |
1790 | } | |
1791 | else | |
1792 | while (*p) | |
1793 | { | |
1794 | p1 = p; | |
1795 | while (*p1 >= '0' && *p1 <= '9') | |
1796 | p1++; | |
1797 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
1798 | error ("Arguments must be display numbers."); | |
c5aa993b | 1799 | |
c906108c SS |
1800 | disable_display (atoi (p)); |
1801 | ||
1802 | p = p1; | |
1803 | while (*p == ' ' || *p == '\t') | |
1804 | p++; | |
1805 | } | |
1806 | } | |
c906108c | 1807 | \f |
c5aa993b | 1808 | |
c906108c SS |
1809 | /* Print the value in stack frame FRAME of a variable |
1810 | specified by a struct symbol. */ | |
1811 | ||
1812 | void | |
1813 | print_variable_value (var, frame, stream) | |
1814 | struct symbol *var; | |
1815 | struct frame_info *frame; | |
d9fcf2fb | 1816 | struct ui_file *stream; |
c906108c SS |
1817 | { |
1818 | value_ptr val = read_var_value (var, frame); | |
1819 | ||
1820 | value_print (val, stream, 0, Val_pretty_default); | |
1821 | } | |
1822 | ||
1823 | /* Print the arguments of a stack frame, given the function FUNC | |
1824 | running in that frame (as a symbol), the info on the frame, | |
1825 | and the number of args according to the stack frame (or -1 if unknown). */ | |
1826 | ||
1827 | /* References here and elsewhere to "number of args according to the | |
1828 | stack frame" appear in all cases to refer to "number of ints of args | |
1829 | according to the stack frame". At least for VAX, i386, isi. */ | |
1830 | ||
1831 | void | |
1832 | print_frame_args (func, fi, num, stream) | |
1833 | struct symbol *func; | |
1834 | struct frame_info *fi; | |
1835 | int num; | |
d9fcf2fb | 1836 | struct ui_file *stream; |
c906108c SS |
1837 | { |
1838 | struct block *b = NULL; | |
1839 | int nsyms = 0; | |
1840 | int first = 1; | |
1841 | register int i; | |
1842 | register struct symbol *sym; | |
1843 | register value_ptr val; | |
1844 | /* Offset of next stack argument beyond the one we have seen that is | |
1845 | at the highest offset. | |
1846 | -1 if we haven't come to a stack argument yet. */ | |
1847 | long highest_offset = -1; | |
1848 | int arg_size; | |
1849 | /* Number of ints of arguments that we have printed so far. */ | |
1850 | int args_printed = 0; | |
8b93c638 JM |
1851 | #ifdef UI_OUT |
1852 | struct cleanup *old_chain; | |
1853 | struct ui_stream *stb; | |
1854 | ||
1855 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 1856 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
8b93c638 | 1857 | #endif /* UI_OUT */ |
c906108c SS |
1858 | |
1859 | if (func) | |
1860 | { | |
1861 | b = SYMBOL_BLOCK_VALUE (func); | |
1862 | nsyms = BLOCK_NSYMS (b); | |
1863 | } | |
1864 | ||
1865 | for (i = 0; i < nsyms; i++) | |
1866 | { | |
1867 | QUIT; | |
1868 | sym = BLOCK_SYM (b, i); | |
1869 | ||
1870 | /* Keep track of the highest stack argument offset seen, and | |
c5aa993b | 1871 | skip over any kinds of symbols we don't care about. */ |
c906108c | 1872 | |
c5aa993b | 1873 | switch (SYMBOL_CLASS (sym)) |
c906108c | 1874 | { |
c5aa993b JM |
1875 | case LOC_ARG: |
1876 | case LOC_REF_ARG: | |
1877 | { | |
1878 | long current_offset = SYMBOL_VALUE (sym); | |
1879 | arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); | |
1880 | ||
1881 | /* Compute address of next argument by adding the size of | |
1882 | this argument and rounding to an int boundary. */ | |
c13c43fd PDM |
1883 | current_offset = |
1884 | ((current_offset + arg_size + sizeof (int) - 1) | |
c5aa993b JM |
1885 | & ~(sizeof (int) - 1)); |
1886 | ||
1887 | /* If this is the highest offset seen yet, set highest_offset. */ | |
1888 | if (highest_offset == -1 | |
1889 | || (current_offset > highest_offset)) | |
1890 | highest_offset = current_offset; | |
1891 | ||
1892 | /* Add the number of ints we're about to print to args_printed. */ | |
1893 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); | |
1894 | } | |
c906108c | 1895 | |
c5aa993b JM |
1896 | /* We care about types of symbols, but don't need to keep track of |
1897 | stack offsets in them. */ | |
1898 | case LOC_REGPARM: | |
1899 | case LOC_REGPARM_ADDR: | |
1900 | case LOC_LOCAL_ARG: | |
1901 | case LOC_BASEREG_ARG: | |
1902 | break; | |
c906108c | 1903 | |
c5aa993b JM |
1904 | /* Other types of symbols we just skip over. */ |
1905 | default: | |
1906 | continue; | |
1907 | } | |
c906108c SS |
1908 | |
1909 | /* We have to look up the symbol because arguments can have | |
c5aa993b JM |
1910 | two entries (one a parameter, one a local) and the one we |
1911 | want is the local, which lookup_symbol will find for us. | |
1912 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1913 | small structure and gcc2 when the argument type is float | |
1914 | and it is passed as a double and converted to float by | |
1915 | the prologue (in the latter case the type of the LOC_ARG | |
1916 | symbol is double and the type of the LOC_LOCAL symbol is | |
1917 | float). */ | |
c906108c | 1918 | /* But if the parameter name is null, don't try it. |
c5aa993b JM |
1919 | Null parameter names occur on the RS/6000, for traceback tables. |
1920 | FIXME, should we even print them? */ | |
c906108c SS |
1921 | |
1922 | if (*SYMBOL_NAME (sym)) | |
1923 | { | |
1924 | struct symbol *nsym; | |
1925 | nsym = lookup_symbol | |
1926 | (SYMBOL_NAME (sym), | |
c5aa993b | 1927 | b, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL); |
c906108c SS |
1928 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER) |
1929 | { | |
1930 | /* There is a LOC_ARG/LOC_REGISTER pair. This means that | |
c5aa993b JM |
1931 | it was passed on the stack and loaded into a register, |
1932 | or passed in a register and stored in a stack slot. | |
1933 | GDB 3.x used the LOC_ARG; GDB 4.0-4.11 used the LOC_REGISTER. | |
1934 | ||
1935 | Reasons for using the LOC_ARG: | |
1936 | (1) because find_saved_registers may be slow for remote | |
1937 | debugging, | |
1938 | (2) because registers are often re-used and stack slots | |
1939 | rarely (never?) are. Therefore using the stack slot is | |
1940 | much less likely to print garbage. | |
1941 | ||
1942 | Reasons why we might want to use the LOC_REGISTER: | |
1943 | (1) So that the backtrace prints the same value as | |
1944 | "print foo". I see no compelling reason why this needs | |
1945 | to be the case; having the backtrace print the value which | |
1946 | was passed in, and "print foo" print the value as modified | |
1947 | within the called function, makes perfect sense to me. | |
1948 | ||
1949 | Additional note: It might be nice if "info args" displayed | |
1950 | both values. | |
1951 | One more note: There is a case with sparc structure passing | |
1952 | where we need to use the LOC_REGISTER, but this is dealt with | |
1953 | by creating a single LOC_REGPARM in symbol reading. */ | |
c906108c SS |
1954 | |
1955 | /* Leave sym (the LOC_ARG) alone. */ | |
1956 | ; | |
1957 | } | |
1958 | else | |
1959 | sym = nsym; | |
1960 | } | |
1961 | ||
8b93c638 JM |
1962 | #ifdef UI_OUT |
1963 | /* Print the current arg. */ | |
1964 | if (!first) | |
1965 | ui_out_text (uiout, ", "); | |
1966 | ui_out_wrap_hint (uiout, " "); | |
1967 | ||
1968 | annotate_arg_begin (); | |
1969 | ||
1970 | ui_out_list_begin (uiout, NULL); | |
1971 | fprintf_symbol_filtered (stb->stream, SYMBOL_SOURCE_NAME (sym), | |
1972 | SYMBOL_LANGUAGE (sym), DMGL_PARAMS | DMGL_ANSI); | |
1973 | ui_out_field_stream (uiout, "name", stb); | |
1974 | annotate_arg_name_end (); | |
1975 | ui_out_text (uiout, "="); | |
1976 | #else | |
c906108c | 1977 | /* Print the current arg. */ |
c5aa993b | 1978 | if (!first) |
c906108c SS |
1979 | fprintf_filtered (stream, ", "); |
1980 | wrap_here (" "); | |
1981 | ||
1982 | annotate_arg_begin (); | |
1983 | ||
1984 | fprintf_symbol_filtered (stream, SYMBOL_SOURCE_NAME (sym), | |
c5aa993b | 1985 | SYMBOL_LANGUAGE (sym), DMGL_PARAMS | DMGL_ANSI); |
c906108c SS |
1986 | annotate_arg_name_end (); |
1987 | fputs_filtered ("=", stream); | |
8b93c638 | 1988 | #endif |
c906108c SS |
1989 | |
1990 | /* Avoid value_print because it will deref ref parameters. We just | |
c5aa993b JM |
1991 | want to print their addresses. Print ??? for args whose address |
1992 | we do not know. We pass 2 as "recurse" to val_print because our | |
1993 | standard indentation here is 4 spaces, and val_print indents | |
1994 | 2 for each recurse. */ | |
c906108c SS |
1995 | val = read_var_value (sym, fi); |
1996 | ||
1997 | annotate_arg_value (val == NULL ? NULL : VALUE_TYPE (val)); | |
1998 | ||
1999 | if (val) | |
2000 | { | |
7a292a7a | 2001 | if (GDB_TARGET_IS_D10V |
c5aa993b JM |
2002 | && SYMBOL_CLASS (sym) == LOC_REGPARM && TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_PTR) |
2003 | TYPE_LENGTH (VALUE_TYPE (val)) = 2; | |
8b93c638 JM |
2004 | #ifdef UI_OUT |
2005 | val_print (VALUE_TYPE (val), VALUE_CONTENTS (val), 0, | |
2006 | VALUE_ADDRESS (val), | |
2007 | stb->stream, 0, 0, 2, Val_no_prettyprint); | |
2008 | ui_out_field_stream (uiout, "value", stb); | |
2009 | } | |
2010 | else | |
2011 | ui_out_text (uiout, "???"); | |
2012 | ||
2013 | ui_out_list_end (uiout); | |
2014 | #else | |
c906108c | 2015 | val_print (VALUE_TYPE (val), VALUE_CONTENTS (val), 0, |
c5aa993b JM |
2016 | VALUE_ADDRESS (val), |
2017 | stream, 0, 0, 2, Val_no_prettyprint); | |
c906108c SS |
2018 | } |
2019 | else | |
2020 | fputs_filtered ("???", stream); | |
8b93c638 | 2021 | #endif |
c906108c SS |
2022 | |
2023 | annotate_arg_end (); | |
2024 | ||
2025 | first = 0; | |
2026 | } | |
2027 | ||
2028 | /* Don't print nameless args in situations where we don't know | |
2029 | enough about the stack to find them. */ | |
2030 | if (num != -1) | |
2031 | { | |
2032 | long start; | |
2033 | ||
2034 | if (highest_offset == -1) | |
2035 | start = FRAME_ARGS_SKIP; | |
2036 | else | |
2037 | start = highest_offset; | |
2038 | ||
2039 | print_frame_nameless_args (fi, start, num - args_printed, | |
2040 | first, stream); | |
2041 | } | |
8b93c638 JM |
2042 | #ifdef UI_OUT |
2043 | do_cleanups (old_chain); | |
2044 | #endif /* no UI_OUT */ | |
c906108c SS |
2045 | } |
2046 | ||
2047 | /* Print nameless args on STREAM. | |
2048 | FI is the frameinfo for this frame, START is the offset | |
2049 | of the first nameless arg, and NUM is the number of nameless args to | |
2050 | print. FIRST is nonzero if this is the first argument (not just | |
2051 | the first nameless arg). */ | |
2052 | ||
2053 | static void | |
2054 | print_frame_nameless_args (fi, start, num, first, stream) | |
2055 | struct frame_info *fi; | |
2056 | long start; | |
2057 | int num; | |
2058 | int first; | |
d9fcf2fb | 2059 | struct ui_file *stream; |
c906108c SS |
2060 | { |
2061 | int i; | |
2062 | CORE_ADDR argsaddr; | |
2063 | long arg_value; | |
2064 | ||
2065 | for (i = 0; i < num; i++) | |
2066 | { | |
2067 | QUIT; | |
2068 | #ifdef NAMELESS_ARG_VALUE | |
2069 | NAMELESS_ARG_VALUE (fi, start, &arg_value); | |
2070 | #else | |
2071 | argsaddr = FRAME_ARGS_ADDRESS (fi); | |
2072 | if (!argsaddr) | |
2073 | return; | |
2074 | ||
2075 | arg_value = read_memory_integer (argsaddr + start, sizeof (int)); | |
2076 | #endif | |
2077 | ||
2078 | if (!first) | |
2079 | fprintf_filtered (stream, ", "); | |
2080 | ||
2081 | #ifdef PRINT_NAMELESS_INTEGER | |
2082 | PRINT_NAMELESS_INTEGER (stream, arg_value); | |
2083 | #else | |
2084 | #ifdef PRINT_TYPELESS_INTEGER | |
2085 | PRINT_TYPELESS_INTEGER (stream, builtin_type_int, (LONGEST) arg_value); | |
2086 | #else | |
2087 | fprintf_filtered (stream, "%ld", arg_value); | |
2088 | #endif /* PRINT_TYPELESS_INTEGER */ | |
2089 | #endif /* PRINT_NAMELESS_INTEGER */ | |
2090 | first = 0; | |
2091 | start += sizeof (int); | |
2092 | } | |
2093 | } | |
2094 | \f | |
2095 | /* ARGSUSED */ | |
2096 | static void | |
2097 | printf_command (arg, from_tty) | |
2098 | char *arg; | |
2099 | int from_tty; | |
2100 | { | |
2101 | register char *f = NULL; | |
2102 | register char *s = arg; | |
2103 | char *string = NULL; | |
2104 | value_ptr *val_args; | |
2105 | char *substrings; | |
2106 | char *current_substring; | |
2107 | int nargs = 0; | |
2108 | int allocated_args = 20; | |
2109 | struct cleanup *old_cleanups; | |
2110 | ||
2111 | val_args = (value_ptr *) xmalloc (allocated_args * sizeof (value_ptr)); | |
c13c43fd | 2112 | old_cleanups = make_cleanup (free_current_contents, &val_args); |
c906108c SS |
2113 | |
2114 | if (s == 0) | |
2115 | error_no_arg ("format-control string and values to print"); | |
2116 | ||
2117 | /* Skip white space before format string */ | |
c5aa993b JM |
2118 | while (*s == ' ' || *s == '\t') |
2119 | s++; | |
c906108c SS |
2120 | |
2121 | /* A format string should follow, enveloped in double quotes */ | |
2122 | if (*s++ != '"') | |
2123 | error ("Bad format string, missing '\"'."); | |
2124 | ||
2125 | /* Parse the format-control string and copy it into the string STRING, | |
2126 | processing some kinds of escape sequence. */ | |
2127 | ||
2128 | f = string = (char *) alloca (strlen (s) + 1); | |
2129 | ||
2130 | while (*s != '"') | |
2131 | { | |
2132 | int c = *s++; | |
2133 | switch (c) | |
2134 | { | |
2135 | case '\0': | |
2136 | error ("Bad format string, non-terminated '\"'."); | |
2137 | ||
2138 | case '\\': | |
2139 | switch (c = *s++) | |
2140 | { | |
2141 | case '\\': | |
2142 | *f++ = '\\'; | |
2143 | break; | |
2144 | case 'a': | |
2145 | #ifdef __STDC__ | |
2146 | *f++ = '\a'; | |
2147 | #else | |
c5aa993b | 2148 | *f++ = '\007'; /* Bell */ |
c906108c SS |
2149 | #endif |
2150 | break; | |
2151 | case 'b': | |
2152 | *f++ = '\b'; | |
2153 | break; | |
2154 | case 'f': | |
2155 | *f++ = '\f'; | |
2156 | break; | |
2157 | case 'n': | |
2158 | *f++ = '\n'; | |
2159 | break; | |
2160 | case 'r': | |
2161 | *f++ = '\r'; | |
2162 | break; | |
2163 | case 't': | |
2164 | *f++ = '\t'; | |
2165 | break; | |
2166 | case 'v': | |
2167 | *f++ = '\v'; | |
2168 | break; | |
2169 | case '"': | |
2170 | *f++ = '"'; | |
2171 | break; | |
2172 | default: | |
2173 | /* ??? TODO: handle other escape sequences */ | |
2174 | error ("Unrecognized escape character \\%c in format string.", | |
2175 | c); | |
2176 | } | |
2177 | break; | |
2178 | ||
2179 | default: | |
2180 | *f++ = c; | |
2181 | } | |
2182 | } | |
2183 | ||
2184 | /* Skip over " and following space and comma. */ | |
2185 | s++; | |
2186 | *f++ = '\0'; | |
c5aa993b JM |
2187 | while (*s == ' ' || *s == '\t') |
2188 | s++; | |
c906108c SS |
2189 | |
2190 | if (*s != ',' && *s != 0) | |
2191 | error ("Invalid argument syntax"); | |
2192 | ||
c5aa993b JM |
2193 | if (*s == ',') |
2194 | s++; | |
2195 | while (*s == ' ' || *s == '\t') | |
2196 | s++; | |
c906108c SS |
2197 | |
2198 | /* Need extra space for the '\0's. Doubling the size is sufficient. */ | |
2199 | substrings = alloca (strlen (string) * 2); | |
2200 | current_substring = substrings; | |
2201 | ||
2202 | { | |
2203 | /* Now scan the string for %-specs and see what kinds of args they want. | |
2204 | argclass[I] classifies the %-specs so we can give printf_filtered | |
2205 | something of the right size. */ | |
2206 | ||
c5aa993b JM |
2207 | enum argclass |
2208 | { | |
2209 | no_arg, int_arg, string_arg, double_arg, long_long_arg | |
2210 | }; | |
c906108c SS |
2211 | enum argclass *argclass; |
2212 | enum argclass this_argclass; | |
2213 | char *last_arg; | |
2214 | int nargs_wanted; | |
2215 | int lcount; | |
2216 | int i; | |
2217 | ||
2218 | argclass = (enum argclass *) alloca (strlen (s) * sizeof *argclass); | |
2219 | nargs_wanted = 0; | |
2220 | f = string; | |
2221 | last_arg = string; | |
2222 | while (*f) | |
2223 | if (*f++ == '%') | |
2224 | { | |
2225 | lcount = 0; | |
c5aa993b | 2226 | while (strchr ("0123456789.hlL-+ #", *f)) |
c906108c SS |
2227 | { |
2228 | if (*f == 'l' || *f == 'L') | |
2229 | lcount++; | |
2230 | f++; | |
2231 | } | |
2232 | switch (*f) | |
2233 | { | |
2234 | case 's': | |
2235 | this_argclass = string_arg; | |
2236 | break; | |
2237 | ||
2238 | case 'e': | |
2239 | case 'f': | |
2240 | case 'g': | |
2241 | this_argclass = double_arg; | |
2242 | break; | |
2243 | ||
2244 | case '*': | |
2245 | error ("`*' not supported for precision or width in printf"); | |
2246 | ||
2247 | case 'n': | |
2248 | error ("Format specifier `n' not supported in printf"); | |
2249 | ||
2250 | case '%': | |
2251 | this_argclass = no_arg; | |
2252 | break; | |
2253 | ||
2254 | default: | |
2255 | if (lcount > 1) | |
2256 | this_argclass = long_long_arg; | |
2257 | else | |
2258 | this_argclass = int_arg; | |
2259 | break; | |
2260 | } | |
2261 | f++; | |
2262 | if (this_argclass != no_arg) | |
2263 | { | |
2264 | strncpy (current_substring, last_arg, f - last_arg); | |
2265 | current_substring += f - last_arg; | |
2266 | *current_substring++ = '\0'; | |
2267 | last_arg = f; | |
2268 | argclass[nargs_wanted++] = this_argclass; | |
2269 | } | |
2270 | } | |
2271 | ||
2272 | /* Now, parse all arguments and evaluate them. | |
2273 | Store the VALUEs in VAL_ARGS. */ | |
2274 | ||
2275 | while (*s != '\0') | |
2276 | { | |
2277 | char *s1; | |
2278 | if (nargs == allocated_args) | |
2279 | val_args = (value_ptr *) xrealloc ((char *) val_args, | |
2280 | (allocated_args *= 2) | |
2281 | * sizeof (value_ptr)); | |
2282 | s1 = s; | |
2283 | val_args[nargs] = parse_to_comma_and_eval (&s1); | |
c5aa993b | 2284 | |
c906108c SS |
2285 | /* If format string wants a float, unchecked-convert the value to |
2286 | floating point of the same size */ | |
c5aa993b | 2287 | |
c906108c SS |
2288 | if (argclass[nargs] == double_arg) |
2289 | { | |
2290 | struct type *type = VALUE_TYPE (val_args[nargs]); | |
2291 | if (TYPE_LENGTH (type) == sizeof (float)) | |
c5aa993b | 2292 | VALUE_TYPE (val_args[nargs]) = builtin_type_float; |
c906108c | 2293 | if (TYPE_LENGTH (type) == sizeof (double)) |
c5aa993b | 2294 | VALUE_TYPE (val_args[nargs]) = builtin_type_double; |
c906108c SS |
2295 | } |
2296 | nargs++; | |
2297 | s = s1; | |
2298 | if (*s == ',') | |
2299 | s++; | |
2300 | } | |
c5aa993b | 2301 | |
c906108c SS |
2302 | if (nargs != nargs_wanted) |
2303 | error ("Wrong number of arguments for specified format-string"); | |
2304 | ||
2305 | /* Now actually print them. */ | |
2306 | current_substring = substrings; | |
2307 | for (i = 0; i < nargs; i++) | |
2308 | { | |
2309 | switch (argclass[i]) | |
2310 | { | |
2311 | case string_arg: | |
2312 | { | |
2313 | char *str; | |
2314 | CORE_ADDR tem; | |
2315 | int j; | |
2316 | tem = value_as_pointer (val_args[i]); | |
2317 | ||
2318 | /* This is a %s argument. Find the length of the string. */ | |
c5aa993b | 2319 | for (j = 0;; j++) |
c906108c SS |
2320 | { |
2321 | char c; | |
2322 | QUIT; | |
d4b2399a | 2323 | read_memory (tem + j, &c, 1); |
c906108c SS |
2324 | if (c == 0) |
2325 | break; | |
2326 | } | |
2327 | ||
2328 | /* Copy the string contents into a string inside GDB. */ | |
2329 | str = (char *) alloca (j + 1); | |
d4b2399a | 2330 | read_memory (tem, str, j); |
c906108c SS |
2331 | str[j] = 0; |
2332 | ||
2333 | printf_filtered (current_substring, str); | |
2334 | } | |
2335 | break; | |
2336 | case double_arg: | |
2337 | { | |
2338 | double val = value_as_double (val_args[i]); | |
2339 | printf_filtered (current_substring, val); | |
2340 | break; | |
2341 | } | |
2342 | case long_long_arg: | |
2343 | #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG) | |
2344 | { | |
2345 | long long val = value_as_long (val_args[i]); | |
2346 | printf_filtered (current_substring, val); | |
2347 | break; | |
2348 | } | |
2349 | #else | |
2350 | error ("long long not supported in printf"); | |
2351 | #endif | |
2352 | case int_arg: | |
2353 | { | |
2354 | /* FIXME: there should be separate int_arg and long_arg. */ | |
2355 | long val = value_as_long (val_args[i]); | |
2356 | printf_filtered (current_substring, val); | |
2357 | break; | |
2358 | } | |
c5aa993b JM |
2359 | default: /* purecov: deadcode */ |
2360 | error ("internal error in printf_command"); /* purecov: deadcode */ | |
c906108c SS |
2361 | } |
2362 | /* Skip to the next substring. */ | |
2363 | current_substring += strlen (current_substring) + 1; | |
2364 | } | |
2365 | /* Print the portion of the format string after the last argument. */ | |
2366 | printf_filtered (last_arg); | |
2367 | } | |
2368 | do_cleanups (old_cleanups); | |
2369 | } | |
2370 | \f | |
2371 | /* Dump a specified section of assembly code. With no command line | |
2372 | arguments, this command will dump the assembly code for the | |
2373 | function surrounding the pc value in the selected frame. With one | |
2374 | argument, it will dump the assembly code surrounding that pc value. | |
2375 | Two arguments are interpeted as bounds within which to dump | |
2376 | assembly. */ | |
2377 | ||
2378 | /* ARGSUSED */ | |
2379 | static void | |
2380 | disassemble_command (arg, from_tty) | |
2381 | char *arg; | |
2382 | int from_tty; | |
2383 | { | |
2384 | CORE_ADDR low, high; | |
2385 | char *name; | |
2386 | CORE_ADDR pc, pc_masked; | |
2387 | char *space_index; | |
2388 | #if 0 | |
2389 | asection *section; | |
2390 | #endif | |
2391 | ||
2392 | name = NULL; | |
2393 | if (!arg) | |
2394 | { | |
2395 | if (!selected_frame) | |
2396 | error ("No frame selected.\n"); | |
2397 | ||
2398 | pc = get_frame_pc (selected_frame); | |
2399 | if (find_pc_partial_function (pc, &name, &low, &high) == 0) | |
2400 | error ("No function contains program counter for selected frame.\n"); | |
2401 | #if defined(TUI) | |
2402 | else if (tui_version) | |
c5aa993b JM |
2403 | low = (CORE_ADDR) tuiDo ((TuiOpaqueFuncPtr) tui_vGetLowDisassemblyAddress, |
2404 | (Opaque) low, | |
2405 | (Opaque) pc); | |
c906108c SS |
2406 | #endif |
2407 | low += FUNCTION_START_OFFSET; | |
2408 | } | |
2409 | else if (!(space_index = (char *) strchr (arg, ' '))) | |
2410 | { | |
2411 | /* One argument. */ | |
2412 | pc = parse_and_eval_address (arg); | |
2413 | if (find_pc_partial_function (pc, &name, &low, &high) == 0) | |
2414 | error ("No function contains specified address.\n"); | |
2415 | #if defined(TUI) | |
2416 | else if (tui_version) | |
c5aa993b JM |
2417 | low = (CORE_ADDR) tuiDo ((TuiOpaqueFuncPtr) tui_vGetLowDisassemblyAddress, |
2418 | (Opaque) low, | |
2419 | (Opaque) pc); | |
c906108c SS |
2420 | #endif |
2421 | #if 0 | |
2422 | if (overlay_debugging) | |
2423 | { | |
2424 | section = find_pc_overlay (pc); | |
2425 | if (pc_in_unmapped_range (pc, section)) | |
2426 | { | |
2427 | /* find_pc_partial_function will have returned low and high | |
c5aa993b JM |
2428 | relative to the symbolic (mapped) address range. Need to |
2429 | translate them back to the unmapped range where PC is. */ | |
2430 | low = overlay_unmapped_address (low, section); | |
c906108c SS |
2431 | high = overlay_unmapped_address (high, section); |
2432 | } | |
2433 | } | |
2434 | #endif | |
2435 | low += FUNCTION_START_OFFSET; | |
2436 | } | |
2437 | else | |
2438 | { | |
2439 | /* Two arguments. */ | |
2440 | *space_index = '\0'; | |
2441 | low = parse_and_eval_address (arg); | |
2442 | high = parse_and_eval_address (space_index + 1); | |
2443 | } | |
2444 | ||
2445 | #if defined(TUI) | |
2446 | if (!tui_version || | |
c5aa993b | 2447 | m_winPtrIsNull (disassemWin) || !disassemWin->generic.isVisible) |
c906108c SS |
2448 | #endif |
2449 | { | |
2450 | printf_filtered ("Dump of assembler code "); | |
2451 | if (name != NULL) | |
2452 | { | |
2453 | printf_filtered ("for function %s:\n", name); | |
2454 | } | |
2455 | else | |
2456 | { | |
2457 | printf_filtered ("from "); | |
2458 | print_address_numeric (low, 1, gdb_stdout); | |
2459 | printf_filtered (" to "); | |
2460 | print_address_numeric (high, 1, gdb_stdout); | |
2461 | printf_filtered (":\n"); | |
2462 | } | |
2463 | ||
2464 | /* Dump the specified range. */ | |
2465 | pc = low; | |
2466 | ||
2467 | #ifdef GDB_TARGET_MASK_DISAS_PC | |
2468 | pc_masked = GDB_TARGET_MASK_DISAS_PC (pc); | |
2469 | #else | |
2470 | pc_masked = pc; | |
2471 | #endif | |
2472 | ||
2473 | while (pc_masked < high) | |
2474 | { | |
2475 | QUIT; | |
2476 | print_address (pc_masked, gdb_stdout); | |
2477 | printf_filtered (":\t"); | |
2478 | /* We often wrap here if there are long symbolic names. */ | |
2479 | wrap_here (" "); | |
2480 | pc += print_insn (pc, gdb_stdout); | |
2481 | printf_filtered ("\n"); | |
2482 | ||
2483 | #ifdef GDB_TARGET_MASK_DISAS_PC | |
2484 | pc_masked = GDB_TARGET_MASK_DISAS_PC (pc); | |
2485 | #else | |
2486 | pc_masked = pc; | |
2487 | #endif | |
2488 | } | |
2489 | printf_filtered ("End of assembler dump.\n"); | |
2490 | gdb_flush (gdb_stdout); | |
2491 | } | |
2492 | #if defined(TUI) | |
2493 | else | |
2494 | { | |
c5aa993b JM |
2495 | tuiDo ((TuiOpaqueFuncPtr) tui_vAddWinToLayout, DISASSEM_WIN); |
2496 | tuiDo ((TuiOpaqueFuncPtr) tui_vUpdateSourceWindowsWithAddr, low); | |
c906108c SS |
2497 | } |
2498 | #endif | |
2499 | } | |
2500 | ||
2501 | /* Print the instruction at address MEMADDR in debugged memory, | |
2502 | on STREAM. Returns length of the instruction, in bytes. */ | |
2503 | ||
2504 | static int | |
2505 | print_insn (memaddr, stream) | |
2506 | CORE_ADDR memaddr; | |
d9fcf2fb | 2507 | struct ui_file *stream; |
c906108c SS |
2508 | { |
2509 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
2510 | TARGET_PRINT_INSN_INFO->endian = BFD_ENDIAN_BIG; | |
2511 | else | |
2512 | TARGET_PRINT_INSN_INFO->endian = BFD_ENDIAN_LITTLE; | |
2513 | ||
2514 | if (TARGET_ARCHITECTURE != NULL) | |
2515 | TARGET_PRINT_INSN_INFO->mach = TARGET_ARCHITECTURE->mach; | |
2516 | /* else: should set .mach=0 but some disassemblers don't grok this */ | |
2517 | ||
2518 | return TARGET_PRINT_INSN (memaddr, TARGET_PRINT_INSN_INFO); | |
2519 | } | |
c906108c | 2520 | \f |
c5aa993b | 2521 | |
c906108c SS |
2522 | void |
2523 | _initialize_printcmd () | |
2524 | { | |
2525 | current_display_number = -1; | |
2526 | ||
2527 | add_info ("address", address_info, | |
c5aa993b | 2528 | "Describe where symbol SYM is stored."); |
c906108c | 2529 | |
c5aa993b | 2530 | add_info ("symbol", sym_info, |
c906108c SS |
2531 | "Describe what symbol is at location ADDR.\n\ |
2532 | Only for symbols with fixed locations (global or static scope)."); | |
2533 | ||
2534 | add_com ("x", class_vars, x_command, | |
2535 | concat ("Examine memory: x/FMT ADDRESS.\n\ | |
2536 | ADDRESS is an expression for the memory address to examine.\n\ | |
2537 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2538 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
2539 | t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n", | |
c5aa993b | 2540 | "Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ |
c906108c SS |
2541 | The specified number of objects of the specified size are printed\n\ |
2542 | according to the format.\n\n\ | |
2543 | Defaults for format and size letters are those previously used.\n\ | |
2544 | Default count is 1. Default address is following last thing printed\n\ | |
2545 | with this command or \"print\".", NULL)); | |
2546 | ||
2547 | add_com ("disassemble", class_vars, disassemble_command, | |
2548 | "Disassemble a specified section of memory.\n\ | |
2549 | Default is the function surrounding the pc of the selected frame.\n\ | |
2550 | With a single argument, the function surrounding that address is dumped.\n\ | |
2551 | Two arguments are taken as a range of memory to dump."); | |
2552 | if (xdb_commands) | |
c5aa993b | 2553 | add_com_alias ("va", "disassemble", class_xdb, 0); |
c906108c SS |
2554 | |
2555 | #if 0 | |
2556 | add_com ("whereis", class_vars, whereis_command, | |
2557 | "Print line number and file of definition of variable."); | |
2558 | #endif | |
c5aa993b | 2559 | |
c906108c SS |
2560 | add_info ("display", display_info, |
2561 | "Expressions to display when program stops, with code numbers."); | |
2562 | ||
2563 | add_cmd ("undisplay", class_vars, undisplay_command, | |
2564 | "Cancel some expressions to be displayed when program stops.\n\ | |
2565 | Arguments are the code numbers of the expressions to stop displaying.\n\ | |
2566 | No argument means cancel all automatic-display expressions.\n\ | |
2567 | \"delete display\" has the same effect as this command.\n\ | |
2568 | Do \"info display\" to see current list of code numbers.", | |
c5aa993b | 2569 | &cmdlist); |
c906108c SS |
2570 | |
2571 | add_com ("display", class_vars, display_command, | |
2572 | "Print value of expression EXP each time the program stops.\n\ | |
2573 | /FMT may be used before EXP as in the \"print\" command.\n\ | |
2574 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2575 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2576 | and examining is done as in the \"x\" command.\n\n\ | |
2577 | With no argument, display all currently requested auto-display expressions.\n\ | |
2578 | Use \"undisplay\" to cancel display requests previously made." | |
c5aa993b | 2579 | ); |
c906108c | 2580 | |
c5aa993b | 2581 | add_cmd ("display", class_vars, enable_display, |
c906108c SS |
2582 | "Enable some expressions to be displayed when program stops.\n\ |
2583 | Arguments are the code numbers of the expressions to resume displaying.\n\ | |
2584 | No argument means enable all automatic-display expressions.\n\ | |
2585 | Do \"info display\" to see current list of code numbers.", &enablelist); | |
2586 | ||
c5aa993b | 2587 | add_cmd ("display", class_vars, disable_display_command, |
c906108c SS |
2588 | "Disable some expressions to be displayed when program stops.\n\ |
2589 | Arguments are the code numbers of the expressions to stop displaying.\n\ | |
2590 | No argument means disable all automatic-display expressions.\n\ | |
2591 | Do \"info display\" to see current list of code numbers.", &disablelist); | |
2592 | ||
c5aa993b | 2593 | add_cmd ("display", class_vars, undisplay_command, |
c906108c SS |
2594 | "Cancel some expressions to be displayed when program stops.\n\ |
2595 | Arguments are the code numbers of the expressions to stop displaying.\n\ | |
2596 | No argument means cancel all automatic-display expressions.\n\ | |
2597 | Do \"info display\" to see current list of code numbers.", &deletelist); | |
2598 | ||
2599 | add_com ("printf", class_vars, printf_command, | |
c5aa993b | 2600 | "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ |
c906108c SS |
2601 | This is useful for formatted output in user-defined commands."); |
2602 | ||
2603 | add_com ("output", class_vars, output_command, | |
2604 | "Like \"print\" but don't put in value history and don't print newline.\n\ | |
2605 | This is useful in user-defined commands."); | |
2606 | ||
2607 | add_prefix_cmd ("set", class_vars, set_command, | |
c5aa993b | 2608 | concat ("Evaluate expression EXP and assign result to variable VAR, using assignment\n\ |
c906108c SS |
2609 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2610 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2611 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2612 | variable in the program being debugged. EXP is any valid expression.\n", | |
c5aa993b | 2613 | "Use \"set variable\" for variables with names identical to set subcommands.\n\ |
c906108c SS |
2614 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
2615 | You can see these environment settings with the \"show\" command.", NULL), | |
c5aa993b | 2616 | &setlist, "set ", 1, &cmdlist); |
c906108c | 2617 | if (dbx_commands) |
c5aa993b | 2618 | add_com ("assign", class_vars, set_command, concat ("Evaluate expression \ |
c906108c SS |
2619 | EXP and assign result to variable VAR, using assignment\n\ |
2620 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ | |
2621 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2622 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2623 | variable in the program being debugged. EXP is any valid expression.\n", | |
c5aa993b | 2624 | "Use \"set variable\" for variables with names identical to set subcommands.\n\ |
c906108c SS |
2625 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
2626 | You can see these environment settings with the \"show\" command.", NULL)); | |
2627 | ||
2628 | /* "call" is the same as "set", but handy for dbx users to call fns. */ | |
2629 | add_com ("call", class_vars, call_command, | |
2630 | "Call a function in the program.\n\ | |
2631 | The argument is the function name and arguments, in the notation of the\n\ | |
2632 | current working language. The result is printed and saved in the value\n\ | |
2633 | history, if it is not void."); | |
2634 | ||
2635 | add_cmd ("variable", class_vars, set_command, | |
c5aa993b | 2636 | "Evaluate expression EXP and assign result to variable VAR, using assignment\n\ |
c906108c SS |
2637 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2638 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2639 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2640 | variable in the program being debugged. EXP is any valid expression.\n\ | |
2641 | This may usually be abbreviated to simply \"set\".", | |
c5aa993b | 2642 | &setlist); |
c906108c SS |
2643 | |
2644 | add_com ("print", class_vars, print_command, | |
2645 | concat ("Print value of expression EXP.\n\ | |
2646 | Variables accessible are those of the lexical environment of the selected\n\ | |
2647 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2648 | \n\ | |
2649 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2650 | $$NUM refers to NUM'th value back from the last one.\n\ | |
2651 | Names starting with $ refer to registers (with the values they would have\n", | |
c5aa993b | 2652 | "if the program were to return to the stack frame now selected, restoring\n\ |
c906108c SS |
2653 | all registers saved by frames farther in) or else to debugger\n\ |
2654 | \"convenience\" variables (any such name not a known register).\n\ | |
2655 | Use assignment expressions to give values to convenience variables.\n", | |
2656 | "\n\ | |
2657 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ | |
2658 | @ is a binary operator for treating consecutive data objects\n\ | |
2659 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2660 | element is FOO, whose second element is stored in the space following\n\ | |
2661 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
2662 | resides in memory.\n", | |
2663 | "\n\ | |
2664 | EXP may be preceded with /FMT, where FMT is a format letter\n\ | |
2665 | but no count or size letter (see \"x\" command).", NULL)); | |
2666 | add_com_alias ("p", "print", class_vars, 1); | |
2667 | ||
2668 | add_com ("inspect", class_vars, inspect_command, | |
c5aa993b | 2669 | "Same as \"print\" command, except that if you are running in the epoch\n\ |
c906108c SS |
2670 | environment, the value is printed in its own window."); |
2671 | ||
2672 | add_show_from_set ( | |
c5aa993b JM |
2673 | add_set_cmd ("max-symbolic-offset", no_class, var_uinteger, |
2674 | (char *) &max_symbolic_offset, | |
2675 | "Set the largest offset that will be printed in <symbol+1234> form.", | |
2676 | &setprintlist), | |
2677 | &showprintlist); | |
c906108c | 2678 | add_show_from_set ( |
c5aa993b JM |
2679 | add_set_cmd ("symbol-filename", no_class, var_boolean, |
2680 | (char *) &print_symbol_filename, | |
2681 | "Set printing of source filename and line number with <symbol>.", | |
2682 | &setprintlist), | |
2683 | &showprintlist); | |
c906108c SS |
2684 | |
2685 | /* For examine/instruction a single byte quantity is specified as | |
2686 | the data. This avoids problems with value_at_lazy() requiring a | |
2687 | valid data type (and rejecting VOID). */ | |
2688 | examine_i_type = init_type (TYPE_CODE_INT, 1, 0, "examine_i_type", NULL); | |
2689 | ||
2690 | examine_b_type = init_type (TYPE_CODE_INT, 1, 0, "examine_b_type", NULL); | |
2691 | examine_h_type = init_type (TYPE_CODE_INT, 2, 0, "examine_h_type", NULL); | |
2692 | examine_w_type = init_type (TYPE_CODE_INT, 4, 0, "examine_w_type", NULL); | |
2693 | examine_g_type = init_type (TYPE_CODE_INT, 8, 0, "examine_g_type", NULL); | |
2694 | ||
2695 | } |