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c906108c | 1 | /* Print values for GNU debugger GDB. |
e2ad119d | 2 | |
b6ba6518 KB |
3 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
4 | 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. | |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
22 | |
23 | #include "defs.h" | |
24 | #include "gdb_string.h" | |
25 | #include "frame.h" | |
26 | #include "symtab.h" | |
27 | #include "gdbtypes.h" | |
28 | #include "value.h" | |
29 | #include "language.h" | |
30 | #include "expression.h" | |
31 | #include "gdbcore.h" | |
32 | #include "gdbcmd.h" | |
33 | #include "target.h" | |
34 | #include "breakpoint.h" | |
35 | #include "demangle.h" | |
36 | #include "valprint.h" | |
37 | #include "annotate.h" | |
c5aa993b JM |
38 | #include "symfile.h" /* for overlay functions */ |
39 | #include "objfiles.h" /* ditto */ | |
c94fdfd0 | 40 | #include "completer.h" /* for completion functions */ |
8b93c638 JM |
41 | #ifdef UI_OUT |
42 | #include "ui-out.h" | |
43 | #endif | |
c906108c SS |
44 | |
45 | extern int asm_demangle; /* Whether to demangle syms in asm printouts */ | |
46 | extern int addressprint; /* Whether to print hex addresses in HLL " */ | |
47 | ||
48 | struct format_data | |
c5aa993b JM |
49 | { |
50 | int count; | |
51 | char format; | |
52 | char size; | |
53 | }; | |
c906108c SS |
54 | |
55 | /* Last specified output format. */ | |
56 | ||
57 | static char last_format = 'x'; | |
58 | ||
59 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
60 | ||
61 | static char last_size = 'w'; | |
62 | ||
63 | /* Default address to examine next. */ | |
64 | ||
65 | static CORE_ADDR next_address; | |
66 | ||
67 | /* Default section to examine next. */ | |
68 | ||
69 | static asection *next_section; | |
70 | ||
71 | /* Last address examined. */ | |
72 | ||
73 | static CORE_ADDR last_examine_address; | |
74 | ||
75 | /* Contents of last address examined. | |
76 | This is not valid past the end of the `x' command! */ | |
77 | ||
78 | static value_ptr last_examine_value; | |
79 | ||
80 | /* Largest offset between a symbolic value and an address, that will be | |
81 | printed as `0x1234 <symbol+offset>'. */ | |
82 | ||
83 | static unsigned int max_symbolic_offset = UINT_MAX; | |
84 | ||
85 | /* Append the source filename and linenumber of the symbol when | |
86 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
87 | static int print_symbol_filename = 0; | |
88 | ||
89 | /* Number of auto-display expression currently being displayed. | |
90 | So that we can disable it if we get an error or a signal within it. | |
91 | -1 when not doing one. */ | |
92 | ||
93 | int current_display_number; | |
94 | ||
95 | /* Flag to low-level print routines that this value is being printed | |
96 | in an epoch window. We'd like to pass this as a parameter, but | |
97 | every routine would need to take it. Perhaps we can encapsulate | |
98 | this in the I/O stream once we have GNU stdio. */ | |
99 | ||
100 | int inspect_it = 0; | |
101 | ||
102 | struct display | |
c5aa993b JM |
103 | { |
104 | /* Chain link to next auto-display item. */ | |
105 | struct display *next; | |
106 | /* Expression to be evaluated and displayed. */ | |
107 | struct expression *exp; | |
108 | /* Item number of this auto-display item. */ | |
109 | int number; | |
110 | /* Display format specified. */ | |
111 | struct format_data format; | |
112 | /* Innermost block required by this expression when evaluated */ | |
113 | struct block *block; | |
114 | /* Status of this display (enabled or disabled) */ | |
115 | enum enable status; | |
116 | }; | |
c906108c SS |
117 | |
118 | /* Chain of expressions whose values should be displayed | |
119 | automatically each time the program stops. */ | |
120 | ||
121 | static struct display *display_chain; | |
122 | ||
123 | static int display_number; | |
124 | ||
125 | /* Prototypes for exported functions. */ | |
126 | ||
a14ed312 | 127 | void output_command (char *, int); |
c906108c | 128 | |
a14ed312 | 129 | void _initialize_printcmd (void); |
c906108c SS |
130 | |
131 | /* Prototypes for local functions. */ | |
132 | ||
a14ed312 | 133 | static void delete_display (int); |
c906108c | 134 | |
a14ed312 | 135 | static void enable_display (char *, int); |
c906108c | 136 | |
a14ed312 | 137 | static void disable_display_command (char *, int); |
c906108c | 138 | |
a14ed312 | 139 | static void disassemble_command (char *, int); |
c906108c | 140 | |
a14ed312 | 141 | static void printf_command (char *, int); |
c906108c | 142 | |
d9fcf2fb JM |
143 | static void print_frame_nameless_args (struct frame_info *, long, |
144 | int, int, struct ui_file *); | |
c906108c | 145 | |
a14ed312 | 146 | static void display_info (char *, int); |
c906108c | 147 | |
a14ed312 | 148 | static void do_one_display (struct display *); |
c906108c | 149 | |
a14ed312 | 150 | static void undisplay_command (char *, int); |
c906108c | 151 | |
a14ed312 | 152 | static void free_display (struct display *); |
c906108c | 153 | |
a14ed312 | 154 | static void display_command (char *, int); |
c906108c | 155 | |
a14ed312 | 156 | void x_command (char *, int); |
c906108c | 157 | |
a14ed312 | 158 | static void address_info (char *, int); |
c906108c | 159 | |
a14ed312 | 160 | static void set_command (char *, int); |
c906108c | 161 | |
a14ed312 | 162 | static void call_command (char *, int); |
c906108c | 163 | |
a14ed312 | 164 | static void inspect_command (char *, int); |
c906108c | 165 | |
a14ed312 | 166 | static void print_command (char *, int); |
c906108c | 167 | |
a14ed312 | 168 | static void print_command_1 (char *, int, int); |
c906108c | 169 | |
a14ed312 | 170 | static void validate_format (struct format_data, char *); |
c906108c | 171 | |
a14ed312 KB |
172 | static void do_examine (struct format_data, CORE_ADDR addr, |
173 | asection * section); | |
c906108c | 174 | |
d9fcf2fb | 175 | static void print_formatted (value_ptr, int, int, struct ui_file *); |
c906108c | 176 | |
a14ed312 | 177 | static struct format_data decode_format (char **, int, int); |
c906108c | 178 | |
d9fcf2fb | 179 | static int print_insn (CORE_ADDR, struct ui_file *); |
c906108c | 180 | |
a14ed312 | 181 | static void sym_info (char *, int); |
c906108c | 182 | \f |
c5aa993b | 183 | |
c906108c SS |
184 | /* Decode a format specification. *STRING_PTR should point to it. |
185 | OFORMAT and OSIZE are used as defaults for the format and size | |
186 | if none are given in the format specification. | |
187 | If OSIZE is zero, then the size field of the returned value | |
188 | should be set only if a size is explicitly specified by the | |
189 | user. | |
190 | The structure returned describes all the data | |
191 | found in the specification. In addition, *STRING_PTR is advanced | |
192 | past the specification and past all whitespace following it. */ | |
193 | ||
194 | static struct format_data | |
fba45db2 | 195 | decode_format (char **string_ptr, int oformat, int osize) |
c906108c SS |
196 | { |
197 | struct format_data val; | |
198 | register char *p = *string_ptr; | |
199 | ||
200 | val.format = '?'; | |
201 | val.size = '?'; | |
202 | val.count = 1; | |
203 | ||
204 | if (*p >= '0' && *p <= '9') | |
205 | val.count = atoi (p); | |
c5aa993b JM |
206 | while (*p >= '0' && *p <= '9') |
207 | p++; | |
c906108c SS |
208 | |
209 | /* Now process size or format letters that follow. */ | |
210 | ||
211 | while (1) | |
212 | { | |
213 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
214 | val.size = *p++; | |
215 | else if (*p >= 'a' && *p <= 'z') | |
216 | val.format = *p++; | |
217 | else | |
218 | break; | |
219 | } | |
220 | ||
c5aa993b JM |
221 | while (*p == ' ' || *p == '\t') |
222 | p++; | |
c906108c SS |
223 | *string_ptr = p; |
224 | ||
225 | /* Set defaults for format and size if not specified. */ | |
226 | if (val.format == '?') | |
227 | { | |
228 | if (val.size == '?') | |
229 | { | |
230 | /* Neither has been specified. */ | |
231 | val.format = oformat; | |
232 | val.size = osize; | |
233 | } | |
234 | else | |
235 | /* If a size is specified, any format makes a reasonable | |
236 | default except 'i'. */ | |
237 | val.format = oformat == 'i' ? 'x' : oformat; | |
238 | } | |
239 | else if (val.size == '?') | |
240 | switch (val.format) | |
241 | { | |
242 | case 'a': | |
243 | case 's': | |
244 | /* Pick the appropriate size for an address. */ | |
245 | if (TARGET_PTR_BIT == 64) | |
246 | val.size = osize ? 'g' : osize; | |
247 | else if (TARGET_PTR_BIT == 32) | |
248 | val.size = osize ? 'w' : osize; | |
249 | else if (TARGET_PTR_BIT == 16) | |
250 | val.size = osize ? 'h' : osize; | |
251 | else | |
252 | /* Bad value for TARGET_PTR_BIT */ | |
e1e9e218 | 253 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
254 | break; |
255 | case 'f': | |
256 | /* Floating point has to be word or giantword. */ | |
257 | if (osize == 'w' || osize == 'g') | |
258 | val.size = osize; | |
259 | else | |
260 | /* Default it to giantword if the last used size is not | |
261 | appropriate. */ | |
262 | val.size = osize ? 'g' : osize; | |
263 | break; | |
264 | case 'c': | |
265 | /* Characters default to one byte. */ | |
266 | val.size = osize ? 'b' : osize; | |
267 | break; | |
268 | default: | |
269 | /* The default is the size most recently specified. */ | |
270 | val.size = osize; | |
271 | } | |
272 | ||
273 | return val; | |
274 | } | |
275 | \f | |
2acceee2 | 276 | /* Print value VAL on stream according to FORMAT, a letter or 0. |
c906108c SS |
277 | Do not end with a newline. |
278 | 0 means print VAL according to its own type. | |
279 | SIZE is the letter for the size of datum being printed. | |
280 | This is used to pad hex numbers so they line up. */ | |
281 | ||
282 | static void | |
fba45db2 KB |
283 | print_formatted (register value_ptr val, register int format, int size, |
284 | struct ui_file *stream) | |
c906108c SS |
285 | { |
286 | struct type *type = check_typedef (VALUE_TYPE (val)); | |
287 | int len = TYPE_LENGTH (type); | |
288 | ||
289 | if (VALUE_LVAL (val) == lval_memory) | |
290 | { | |
291 | next_address = VALUE_ADDRESS (val) + len; | |
292 | next_section = VALUE_BFD_SECTION (val); | |
293 | } | |
294 | ||
295 | switch (format) | |
296 | { | |
297 | case 's': | |
298 | /* FIXME: Need to handle wchar_t's here... */ | |
299 | next_address = VALUE_ADDRESS (val) | |
2acceee2 | 300 | + val_print_string (VALUE_ADDRESS (val), -1, 1, stream); |
c906108c SS |
301 | next_section = VALUE_BFD_SECTION (val); |
302 | break; | |
303 | ||
304 | case 'i': | |
305 | /* The old comment says | |
c5aa993b JM |
306 | "Force output out, print_insn not using _filtered". |
307 | I'm not completely sure what that means, I suspect most print_insn | |
308 | now do use _filtered, so I guess it's obsolete. | |
309 | --Yes, it does filter now, and so this is obsolete. -JB */ | |
c906108c SS |
310 | |
311 | /* We often wrap here if there are long symbolic names. */ | |
312 | wrap_here (" "); | |
313 | next_address = VALUE_ADDRESS (val) | |
2acceee2 | 314 | + print_insn (VALUE_ADDRESS (val), stream); |
c906108c SS |
315 | next_section = VALUE_BFD_SECTION (val); |
316 | break; | |
317 | ||
318 | default: | |
319 | if (format == 0 | |
320 | || TYPE_CODE (type) == TYPE_CODE_ARRAY | |
321 | || TYPE_CODE (type) == TYPE_CODE_STRING | |
322 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
323 | || TYPE_CODE (type) == TYPE_CODE_UNION) | |
c5aa993b JM |
324 | /* If format is 0, use the 'natural' format for |
325 | * that type of value. If the type is non-scalar, | |
326 | * we have to use language rules to print it as | |
327 | * a series of scalars. | |
328 | */ | |
2acceee2 | 329 | value_print (val, stream, format, Val_pretty_default); |
c906108c | 330 | else |
c5aa993b JM |
331 | /* User specified format, so don't look to the |
332 | * the type to tell us what to do. | |
333 | */ | |
c906108c | 334 | print_scalar_formatted (VALUE_CONTENTS (val), type, |
2acceee2 | 335 | format, size, stream); |
c906108c SS |
336 | } |
337 | } | |
338 | ||
339 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, | |
340 | according to letters FORMAT and SIZE on STREAM. | |
341 | FORMAT may not be zero. Formats s and i are not supported at this level. | |
342 | ||
343 | This is how the elements of an array or structure are printed | |
344 | with a format. */ | |
345 | ||
346 | void | |
fba45db2 KB |
347 | print_scalar_formatted (char *valaddr, struct type *type, int format, int size, |
348 | struct ui_file *stream) | |
c906108c SS |
349 | { |
350 | LONGEST val_long; | |
351 | unsigned int len = TYPE_LENGTH (type); | |
352 | ||
353 | if (len > sizeof (LONGEST) | |
354 | && (format == 't' | |
355 | || format == 'c' | |
356 | || format == 'o' | |
357 | || format == 'u' | |
358 | || format == 'd' | |
359 | || format == 'x')) | |
360 | { | |
c5aa993b JM |
361 | if (!TYPE_UNSIGNED (type) |
362 | || !extract_long_unsigned_integer (valaddr, len, &val_long)) | |
c906108c SS |
363 | { |
364 | /* We can't print it normally, but we can print it in hex. | |
365 | Printing it in the wrong radix is more useful than saying | |
366 | "use /x, you dummy". */ | |
367 | /* FIXME: we could also do octal or binary if that was the | |
368 | desired format. */ | |
369 | /* FIXME: we should be using the size field to give us a | |
370 | minimum field width to print. */ | |
371 | ||
c5aa993b JM |
372 | if (format == 'o') |
373 | print_octal_chars (stream, valaddr, len); | |
374 | else if (format == 'd') | |
375 | print_decimal_chars (stream, valaddr, len); | |
376 | else if (format == 't') | |
377 | print_binary_chars (stream, valaddr, len); | |
378 | else | |
379 | /* replace with call to print_hex_chars? Looks | |
380 | like val_print_type_code_int is redoing | |
381 | work. - edie */ | |
c906108c | 382 | |
c5aa993b | 383 | val_print_type_code_int (type, valaddr, stream); |
c906108c SS |
384 | |
385 | return; | |
386 | } | |
387 | ||
388 | /* If we get here, extract_long_unsigned_integer set val_long. */ | |
389 | } | |
390 | else if (format != 'f') | |
391 | val_long = unpack_long (type, valaddr); | |
392 | ||
393 | /* If we are printing it as unsigned, truncate it in case it is actually | |
394 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
395 | (if shorts are 16 bits) instead of 4294967295). */ | |
396 | if (format != 'd') | |
397 | { | |
398 | if (len < sizeof (LONGEST)) | |
399 | val_long &= ((LONGEST) 1 << HOST_CHAR_BIT * len) - 1; | |
400 | } | |
401 | ||
402 | switch (format) | |
403 | { | |
404 | case 'x': | |
405 | if (!size) | |
406 | { | |
407 | /* no size specified, like in print. Print varying # of digits. */ | |
408 | print_longest (stream, 'x', 1, val_long); | |
409 | } | |
410 | else | |
411 | switch (size) | |
412 | { | |
413 | case 'b': | |
414 | case 'h': | |
415 | case 'w': | |
416 | case 'g': | |
417 | print_longest (stream, size, 1, val_long); | |
418 | break; | |
419 | default: | |
420 | error ("Undefined output size \"%c\".", size); | |
421 | } | |
422 | break; | |
423 | ||
424 | case 'd': | |
425 | print_longest (stream, 'd', 1, val_long); | |
426 | break; | |
427 | ||
428 | case 'u': | |
429 | print_longest (stream, 'u', 0, val_long); | |
430 | break; | |
431 | ||
432 | case 'o': | |
433 | if (val_long) | |
434 | print_longest (stream, 'o', 1, val_long); | |
435 | else | |
436 | fprintf_filtered (stream, "0"); | |
437 | break; | |
438 | ||
439 | case 'a': | |
593de6a6 | 440 | { |
593de6a6 | 441 | CORE_ADDR addr = unpack_pointer (type, valaddr); |
593de6a6 PS |
442 | print_address (addr, stream); |
443 | } | |
c906108c SS |
444 | break; |
445 | ||
446 | case 'c': | |
9e0b60a8 JM |
447 | value_print (value_from_longest (builtin_type_true_char, val_long), |
448 | stream, 0, Val_pretty_default); | |
c906108c SS |
449 | break; |
450 | ||
451 | case 'f': | |
452 | if (len == sizeof (float)) | |
c5aa993b | 453 | type = builtin_type_float; |
c906108c | 454 | else if (len == sizeof (double)) |
c5aa993b | 455 | type = builtin_type_double; |
c906108c SS |
456 | print_floating (valaddr, type, stream); |
457 | break; | |
458 | ||
459 | case 0: | |
e1e9e218 | 460 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
461 | |
462 | case 't': | |
463 | /* Binary; 't' stands for "two". */ | |
464 | { | |
c5aa993b JM |
465 | char bits[8 * (sizeof val_long) + 1]; |
466 | char buf[8 * (sizeof val_long) + 32]; | |
c906108c SS |
467 | char *cp = bits; |
468 | int width; | |
469 | ||
c5aa993b JM |
470 | if (!size) |
471 | width = 8 * (sizeof val_long); | |
472 | else | |
473 | switch (size) | |
c906108c SS |
474 | { |
475 | case 'b': | |
476 | width = 8; | |
477 | break; | |
478 | case 'h': | |
479 | width = 16; | |
480 | break; | |
481 | case 'w': | |
482 | width = 32; | |
483 | break; | |
484 | case 'g': | |
485 | width = 64; | |
486 | break; | |
487 | default: | |
488 | error ("Undefined output size \"%c\".", size); | |
489 | } | |
490 | ||
c5aa993b JM |
491 | bits[width] = '\0'; |
492 | while (width-- > 0) | |
493 | { | |
494 | bits[width] = (val_long & 1) ? '1' : '0'; | |
495 | val_long >>= 1; | |
496 | } | |
c906108c SS |
497 | if (!size) |
498 | { | |
499 | while (*cp && *cp == '0') | |
500 | cp++; | |
501 | if (*cp == '\0') | |
502 | cp--; | |
503 | } | |
c5aa993b | 504 | strcpy (buf, local_binary_format_prefix ()); |
c906108c | 505 | strcat (buf, cp); |
c5aa993b JM |
506 | strcat (buf, local_binary_format_suffix ()); |
507 | fprintf_filtered (stream, buf); | |
c906108c SS |
508 | } |
509 | break; | |
510 | ||
511 | default: | |
512 | error ("Undefined output format \"%c\".", format); | |
513 | } | |
514 | } | |
515 | ||
516 | /* Specify default address for `x' command. | |
517 | `info lines' uses this. */ | |
518 | ||
519 | void | |
fba45db2 | 520 | set_next_address (CORE_ADDR addr) |
c906108c SS |
521 | { |
522 | next_address = addr; | |
523 | ||
524 | /* Make address available to the user as $_. */ | |
525 | set_internalvar (lookup_internalvar ("_"), | |
4478b372 JB |
526 | value_from_pointer (lookup_pointer_type (builtin_type_void), |
527 | addr)); | |
c906108c SS |
528 | } |
529 | ||
530 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, | |
531 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
532 | Optionally also print source file and line number, if available. | |
533 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, | |
534 | or to interpret it as a possible C++ name and convert it back to source | |
535 | form. However note that DO_DEMANGLE can be overridden by the specific | |
536 | settings of the demangle and asm_demangle variables. */ | |
537 | ||
538 | void | |
fba45db2 KB |
539 | print_address_symbolic (CORE_ADDR addr, struct ui_file *stream, int do_demangle, |
540 | char *leadin) | |
dfcd3bfb JM |
541 | { |
542 | char *name = NULL; | |
543 | char *filename = NULL; | |
544 | int unmapped = 0; | |
545 | int offset = 0; | |
546 | int line = 0; | |
547 | ||
2f9429ae AC |
548 | /* throw away both name and filename */ |
549 | struct cleanup *cleanup_chain = make_cleanup (free_current_contents, &name); | |
550 | make_cleanup (free_current_contents, &filename); | |
dfcd3bfb JM |
551 | |
552 | if (build_address_symbolic (addr, do_demangle, &name, &offset, &filename, &line, &unmapped)) | |
2f9429ae AC |
553 | { |
554 | do_cleanups (cleanup_chain); | |
555 | return; | |
556 | } | |
dfcd3bfb JM |
557 | |
558 | fputs_filtered (leadin, stream); | |
559 | if (unmapped) | |
560 | fputs_filtered ("<*", stream); | |
561 | else | |
562 | fputs_filtered ("<", stream); | |
563 | fputs_filtered (name, stream); | |
564 | if (offset != 0) | |
565 | fprintf_filtered (stream, "+%u", (unsigned int) offset); | |
566 | ||
567 | /* Append source filename and line number if desired. Give specific | |
568 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
569 | if (print_symbol_filename && filename != NULL) | |
570 | { | |
571 | if (line != -1) | |
572 | fprintf_filtered (stream, " at %s:%d", filename, line); | |
573 | else | |
574 | fprintf_filtered (stream, " in %s", filename); | |
575 | } | |
576 | if (unmapped) | |
577 | fputs_filtered ("*>", stream); | |
578 | else | |
579 | fputs_filtered (">", stream); | |
580 | ||
581 | do_cleanups (cleanup_chain); | |
582 | } | |
583 | ||
584 | /* Given an address ADDR return all the elements needed to print the | |
585 | address in a symbolic form. NAME can be mangled or not depending | |
586 | on DO_DEMANGLE (and also on the asm_demangle global variable, | |
587 | manipulated via ''set print asm-demangle''). Return 0 in case of | |
588 | success, when all the info in the OUT paramters is valid. Return 1 | |
589 | otherwise. */ | |
590 | int | |
591 | build_address_symbolic (CORE_ADDR addr, /* IN */ | |
592 | int do_demangle, /* IN */ | |
593 | char **name, /* OUT */ | |
594 | int *offset, /* OUT */ | |
595 | char **filename, /* OUT */ | |
596 | int *line, /* OUT */ | |
597 | int *unmapped) /* OUT */ | |
c906108c SS |
598 | { |
599 | struct minimal_symbol *msymbol; | |
600 | struct symbol *symbol; | |
601 | struct symtab *symtab = 0; | |
602 | CORE_ADDR name_location = 0; | |
c906108c | 603 | asection *section = 0; |
dfcd3bfb JM |
604 | char *name_temp = ""; |
605 | ||
606 | /* Let's say it is unmapped. */ | |
607 | *unmapped = 0; | |
c906108c | 608 | |
dfcd3bfb JM |
609 | /* Determine if the address is in an overlay, and whether it is |
610 | mapped. */ | |
c906108c SS |
611 | if (overlay_debugging) |
612 | { | |
613 | section = find_pc_overlay (addr); | |
614 | if (pc_in_unmapped_range (addr, section)) | |
615 | { | |
dfcd3bfb | 616 | *unmapped = 1; |
c906108c SS |
617 | addr = overlay_mapped_address (addr, section); |
618 | } | |
619 | } | |
620 | ||
621 | /* On some targets, add in extra "flag" bits to PC for | |
622 | disassembly. This should ensure that "rounding errors" in | |
623 | symbol addresses that are masked for disassembly favour the | |
624 | the correct symbol. */ | |
625 | ||
626 | #ifdef GDB_TARGET_UNMASK_DISAS_PC | |
627 | addr = GDB_TARGET_UNMASK_DISAS_PC (addr); | |
628 | #endif | |
629 | ||
630 | /* First try to find the address in the symbol table, then | |
631 | in the minsyms. Take the closest one. */ | |
632 | ||
633 | /* This is defective in the sense that it only finds text symbols. So | |
634 | really this is kind of pointless--we should make sure that the | |
635 | minimal symbols have everything we need (by changing that we could | |
636 | save some memory, but for many debug format--ELF/DWARF or | |
637 | anything/stabs--it would be inconvenient to eliminate those minimal | |
638 | symbols anyway). */ | |
639 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section); | |
640 | symbol = find_pc_sect_function (addr, section); | |
641 | ||
642 | if (symbol) | |
643 | { | |
644 | name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol)); | |
645 | if (do_demangle) | |
dfcd3bfb | 646 | name_temp = SYMBOL_SOURCE_NAME (symbol); |
c906108c | 647 | else |
dfcd3bfb | 648 | name_temp = SYMBOL_LINKAGE_NAME (symbol); |
c906108c SS |
649 | } |
650 | ||
651 | if (msymbol != NULL) | |
652 | { | |
653 | if (SYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL) | |
654 | { | |
655 | /* The msymbol is closer to the address than the symbol; | |
656 | use the msymbol instead. */ | |
657 | symbol = 0; | |
658 | symtab = 0; | |
659 | name_location = SYMBOL_VALUE_ADDRESS (msymbol); | |
660 | if (do_demangle) | |
dfcd3bfb | 661 | name_temp = SYMBOL_SOURCE_NAME (msymbol); |
c906108c | 662 | else |
dfcd3bfb | 663 | name_temp = SYMBOL_LINKAGE_NAME (msymbol); |
c906108c SS |
664 | } |
665 | } | |
666 | if (symbol == NULL && msymbol == NULL) | |
dfcd3bfb | 667 | return 1; |
c906108c SS |
668 | |
669 | /* On some targets, mask out extra "flag" bits from PC for handsome | |
670 | disassembly. */ | |
671 | ||
672 | #ifdef GDB_TARGET_MASK_DISAS_PC | |
673 | name_location = GDB_TARGET_MASK_DISAS_PC (name_location); | |
674 | addr = GDB_TARGET_MASK_DISAS_PC (addr); | |
675 | #endif | |
676 | ||
677 | /* If the nearest symbol is too far away, don't print anything symbolic. */ | |
678 | ||
679 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
680 | CORE_ADDR. But when we detect unsigned wraparound in the | |
681 | CORE_ADDR math, we ignore this test and print the offset, | |
682 | because addr+max_symbolic_offset has wrapped through the end | |
683 | of the address space back to the beginning, giving bogus comparison. */ | |
684 | if (addr > name_location + max_symbolic_offset | |
685 | && name_location + max_symbolic_offset > name_location) | |
dfcd3bfb | 686 | return 1; |
c906108c | 687 | |
dfcd3bfb JM |
688 | *offset = addr - name_location; |
689 | ||
690 | *name = xstrdup (name_temp); | |
c906108c | 691 | |
c906108c SS |
692 | if (print_symbol_filename) |
693 | { | |
694 | struct symtab_and_line sal; | |
695 | ||
696 | sal = find_pc_sect_line (addr, section, 0); | |
697 | ||
698 | if (sal.symtab) | |
dfcd3bfb JM |
699 | { |
700 | *filename = xstrdup (sal.symtab->filename); | |
701 | *line = sal.line; | |
702 | } | |
c906108c | 703 | else if (symtab && symbol && symbol->line) |
dfcd3bfb JM |
704 | { |
705 | *filename = xstrdup (symtab->filename); | |
706 | *line = symbol->line; | |
707 | } | |
c906108c | 708 | else if (symtab) |
dfcd3bfb JM |
709 | { |
710 | *filename = xstrdup (symtab->filename); | |
711 | *line = -1; | |
712 | } | |
c906108c | 713 | } |
dfcd3bfb | 714 | return 0; |
c906108c SS |
715 | } |
716 | ||
c906108c SS |
717 | /* Print address ADDR on STREAM. USE_LOCAL means the same thing as for |
718 | print_longest. */ | |
719 | void | |
fba45db2 | 720 | print_address_numeric (CORE_ADDR addr, int use_local, struct ui_file *stream) |
c906108c | 721 | { |
c0d8fd9a | 722 | /* Truncate address to the size of a target address, avoiding shifts |
e2ad119d | 723 | larger or equal than the width of a CORE_ADDR. The local |
c0d8fd9a MS |
724 | variable ADDR_BIT stops the compiler reporting a shift overflow |
725 | when it won't occur. */ | |
e2ad119d AC |
726 | /* NOTE: This assumes that the significant address information is |
727 | kept in the least significant bits of ADDR - the upper bits were | |
728 | either zero or sign extended. Should ADDRESS_TO_POINTER() or | |
729 | some ADDRESS_TO_PRINTABLE() be used to do the conversion? */ | |
c0d8fd9a | 730 | |
52204a0b | 731 | int addr_bit = TARGET_ADDR_BIT; |
c0d8fd9a | 732 | |
52204a0b DT |
733 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) |
734 | addr &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
c906108c SS |
735 | print_longest (stream, 'x', use_local, (ULONGEST) addr); |
736 | } | |
737 | ||
738 | /* Print address ADDR symbolically on STREAM. | |
739 | First print it as a number. Then perhaps print | |
740 | <SYMBOL + OFFSET> after the number. */ | |
741 | ||
742 | void | |
fba45db2 | 743 | print_address (CORE_ADDR addr, struct ui_file *stream) |
c906108c SS |
744 | { |
745 | print_address_numeric (addr, 1, stream); | |
746 | print_address_symbolic (addr, stream, asm_demangle, " "); | |
747 | } | |
748 | ||
749 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE | |
750 | controls whether to print the symbolic name "raw" or demangled. | |
751 | Global setting "addressprint" controls whether to print hex address | |
752 | or not. */ | |
753 | ||
754 | void | |
fba45db2 | 755 | print_address_demangle (CORE_ADDR addr, struct ui_file *stream, int do_demangle) |
c906108c SS |
756 | { |
757 | if (addr == 0) | |
758 | { | |
759 | fprintf_filtered (stream, "0"); | |
760 | } | |
761 | else if (addressprint) | |
762 | { | |
763 | print_address_numeric (addr, 1, stream); | |
764 | print_address_symbolic (addr, stream, do_demangle, " "); | |
765 | } | |
766 | else | |
767 | { | |
768 | print_address_symbolic (addr, stream, do_demangle, ""); | |
769 | } | |
770 | } | |
771 | \f | |
772 | ||
773 | /* These are the types that $__ will get after an examine command of one | |
774 | of these sizes. */ | |
775 | ||
776 | static struct type *examine_i_type; | |
777 | ||
778 | static struct type *examine_b_type; | |
779 | static struct type *examine_h_type; | |
780 | static struct type *examine_w_type; | |
781 | static struct type *examine_g_type; | |
782 | ||
783 | /* Examine data at address ADDR in format FMT. | |
784 | Fetch it from memory and print on gdb_stdout. */ | |
785 | ||
786 | static void | |
fba45db2 | 787 | do_examine (struct format_data fmt, CORE_ADDR addr, asection *sect) |
c906108c SS |
788 | { |
789 | register char format = 0; | |
790 | register char size; | |
791 | register int count = 1; | |
792 | struct type *val_type = NULL; | |
793 | register int i; | |
794 | register int maxelts; | |
795 | ||
796 | format = fmt.format; | |
797 | size = fmt.size; | |
798 | count = fmt.count; | |
799 | next_address = addr; | |
800 | next_section = sect; | |
801 | ||
802 | /* String or instruction format implies fetch single bytes | |
803 | regardless of the specified size. */ | |
804 | if (format == 's' || format == 'i') | |
805 | size = 'b'; | |
806 | ||
807 | if (format == 'i') | |
808 | val_type = examine_i_type; | |
809 | else if (size == 'b') | |
810 | val_type = examine_b_type; | |
811 | else if (size == 'h') | |
812 | val_type = examine_h_type; | |
813 | else if (size == 'w') | |
814 | val_type = examine_w_type; | |
815 | else if (size == 'g') | |
816 | val_type = examine_g_type; | |
817 | ||
818 | maxelts = 8; | |
819 | if (size == 'w') | |
820 | maxelts = 4; | |
821 | if (size == 'g') | |
822 | maxelts = 2; | |
823 | if (format == 's' || format == 'i') | |
824 | maxelts = 1; | |
825 | ||
826 | /* Print as many objects as specified in COUNT, at most maxelts per line, | |
827 | with the address of the next one at the start of each line. */ | |
828 | ||
829 | while (count > 0) | |
830 | { | |
831 | QUIT; | |
832 | print_address (next_address, gdb_stdout); | |
833 | printf_filtered (":"); | |
834 | for (i = maxelts; | |
835 | i > 0 && count > 0; | |
836 | i--, count--) | |
837 | { | |
838 | printf_filtered ("\t"); | |
839 | /* Note that print_formatted sets next_address for the next | |
840 | object. */ | |
841 | last_examine_address = next_address; | |
842 | ||
843 | if (last_examine_value) | |
844 | value_free (last_examine_value); | |
845 | ||
846 | /* The value to be displayed is not fetched greedily. | |
c5aa993b JM |
847 | Instead, to avoid the posibility of a fetched value not |
848 | being used, its retreval is delayed until the print code | |
849 | uses it. When examining an instruction stream, the | |
850 | disassembler will perform its own memory fetch using just | |
851 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
852 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
853 | is left with the byte sequence from the last complete | |
854 | instruction fetched from memory? */ | |
c906108c SS |
855 | last_examine_value = value_at_lazy (val_type, next_address, sect); |
856 | ||
857 | if (last_examine_value) | |
858 | release_value (last_examine_value); | |
859 | ||
2acceee2 | 860 | print_formatted (last_examine_value, format, size, gdb_stdout); |
c906108c SS |
861 | } |
862 | printf_filtered ("\n"); | |
863 | gdb_flush (gdb_stdout); | |
864 | } | |
865 | } | |
866 | \f | |
867 | static void | |
fba45db2 | 868 | validate_format (struct format_data fmt, char *cmdname) |
c906108c SS |
869 | { |
870 | if (fmt.size != 0) | |
871 | error ("Size letters are meaningless in \"%s\" command.", cmdname); | |
872 | if (fmt.count != 1) | |
873 | error ("Item count other than 1 is meaningless in \"%s\" command.", | |
874 | cmdname); | |
875 | if (fmt.format == 'i' || fmt.format == 's') | |
876 | error ("Format letter \"%c\" is meaningless in \"%s\" command.", | |
877 | fmt.format, cmdname); | |
878 | } | |
879 | ||
880 | /* Evaluate string EXP as an expression in the current language and | |
c5aa993b JM |
881 | print the resulting value. EXP may contain a format specifier as the |
882 | first argument ("/x myvar" for example, to print myvar in hex). | |
883 | */ | |
c906108c SS |
884 | |
885 | static void | |
fba45db2 | 886 | print_command_1 (char *exp, int inspect, int voidprint) |
c906108c SS |
887 | { |
888 | struct expression *expr; | |
889 | register struct cleanup *old_chain = 0; | |
890 | register char format = 0; | |
891 | register value_ptr val; | |
892 | struct format_data fmt; | |
893 | int cleanup = 0; | |
894 | ||
895 | /* Pass inspect flag to the rest of the print routines in a global (sigh). */ | |
896 | inspect_it = inspect; | |
897 | ||
898 | if (exp && *exp == '/') | |
899 | { | |
900 | exp++; | |
901 | fmt = decode_format (&exp, last_format, 0); | |
902 | validate_format (fmt, "print"); | |
903 | last_format = format = fmt.format; | |
904 | } | |
905 | else | |
906 | { | |
907 | fmt.count = 1; | |
908 | fmt.format = 0; | |
909 | fmt.size = 0; | |
910 | } | |
911 | ||
912 | if (exp && *exp) | |
913 | { | |
c906108c SS |
914 | struct type *type; |
915 | expr = parse_expression (exp); | |
c13c43fd | 916 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
917 | cleanup = 1; |
918 | val = evaluate_expression (expr); | |
919 | ||
920 | /* C++: figure out what type we actually want to print it as. */ | |
921 | type = VALUE_TYPE (val); | |
922 | ||
923 | if (objectprint | |
c5aa993b | 924 | && (TYPE_CODE (type) == TYPE_CODE_PTR |
c906108c | 925 | || TYPE_CODE (type) == TYPE_CODE_REF) |
c5aa993b | 926 | && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRUCT |
c906108c SS |
927 | || TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_UNION)) |
928 | { | |
929 | value_ptr v; | |
930 | ||
931 | v = value_from_vtable_info (val, TYPE_TARGET_TYPE (type)); | |
932 | if (v != 0) | |
933 | { | |
934 | val = v; | |
935 | type = VALUE_TYPE (val); | |
936 | } | |
937 | } | |
938 | } | |
939 | else | |
940 | val = access_value_history (0); | |
941 | ||
942 | if (voidprint || (val && VALUE_TYPE (val) && | |
c5aa993b | 943 | TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_VOID)) |
c906108c SS |
944 | { |
945 | int histindex = record_latest_value (val); | |
946 | ||
947 | if (histindex >= 0) | |
948 | annotate_value_history_begin (histindex, VALUE_TYPE (val)); | |
949 | else | |
950 | annotate_value_begin (VALUE_TYPE (val)); | |
951 | ||
952 | if (inspect) | |
953 | printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"", exp, histindex); | |
c5aa993b JM |
954 | else if (histindex >= 0) |
955 | printf_filtered ("$%d = ", histindex); | |
c906108c SS |
956 | |
957 | if (histindex >= 0) | |
958 | annotate_value_history_value (); | |
959 | ||
2acceee2 | 960 | print_formatted (val, format, fmt.size, gdb_stdout); |
c906108c SS |
961 | printf_filtered ("\n"); |
962 | ||
963 | if (histindex >= 0) | |
964 | annotate_value_history_end (); | |
965 | else | |
966 | annotate_value_end (); | |
967 | ||
968 | if (inspect) | |
c5aa993b | 969 | printf_unfiltered ("\") )\030"); |
c906108c SS |
970 | } |
971 | ||
972 | if (cleanup) | |
973 | do_cleanups (old_chain); | |
c5aa993b | 974 | inspect_it = 0; /* Reset print routines to normal */ |
c906108c SS |
975 | } |
976 | ||
977 | /* ARGSUSED */ | |
978 | static void | |
fba45db2 | 979 | print_command (char *exp, int from_tty) |
c906108c SS |
980 | { |
981 | print_command_1 (exp, 0, 1); | |
982 | } | |
983 | ||
984 | /* Same as print, except in epoch, it gets its own window */ | |
985 | /* ARGSUSED */ | |
986 | static void | |
fba45db2 | 987 | inspect_command (char *exp, int from_tty) |
c906108c SS |
988 | { |
989 | extern int epoch_interface; | |
990 | ||
991 | print_command_1 (exp, epoch_interface, 1); | |
992 | } | |
993 | ||
994 | /* Same as print, except it doesn't print void results. */ | |
995 | /* ARGSUSED */ | |
996 | static void | |
fba45db2 | 997 | call_command (char *exp, int from_tty) |
c906108c SS |
998 | { |
999 | print_command_1 (exp, 0, 0); | |
1000 | } | |
1001 | ||
1002 | /* ARGSUSED */ | |
1003 | void | |
fba45db2 | 1004 | output_command (char *exp, int from_tty) |
c906108c SS |
1005 | { |
1006 | struct expression *expr; | |
1007 | register struct cleanup *old_chain; | |
1008 | register char format = 0; | |
1009 | register value_ptr val; | |
1010 | struct format_data fmt; | |
1011 | ||
1012 | if (exp && *exp == '/') | |
1013 | { | |
1014 | exp++; | |
1015 | fmt = decode_format (&exp, 0, 0); | |
1016 | validate_format (fmt, "output"); | |
1017 | format = fmt.format; | |
1018 | } | |
1019 | ||
1020 | expr = parse_expression (exp); | |
c13c43fd | 1021 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
1022 | |
1023 | val = evaluate_expression (expr); | |
1024 | ||
1025 | annotate_value_begin (VALUE_TYPE (val)); | |
1026 | ||
2acceee2 | 1027 | print_formatted (val, format, fmt.size, gdb_stdout); |
c906108c SS |
1028 | |
1029 | annotate_value_end (); | |
1030 | ||
2acceee2 JM |
1031 | wrap_here (""); |
1032 | gdb_flush (gdb_stdout); | |
1033 | ||
c906108c SS |
1034 | do_cleanups (old_chain); |
1035 | } | |
1036 | ||
1037 | /* ARGSUSED */ | |
1038 | static void | |
fba45db2 | 1039 | set_command (char *exp, int from_tty) |
c906108c SS |
1040 | { |
1041 | struct expression *expr = parse_expression (exp); | |
c13c43fd PDM |
1042 | register struct cleanup *old_chain = |
1043 | make_cleanup (free_current_contents, &expr); | |
c906108c SS |
1044 | evaluate_expression (expr); |
1045 | do_cleanups (old_chain); | |
1046 | } | |
1047 | ||
1048 | /* ARGSUSED */ | |
1049 | static void | |
fba45db2 | 1050 | sym_info (char *arg, int from_tty) |
c906108c SS |
1051 | { |
1052 | struct minimal_symbol *msymbol; | |
c5aa993b JM |
1053 | struct objfile *objfile; |
1054 | struct obj_section *osect; | |
1055 | asection *sect; | |
1056 | CORE_ADDR addr, sect_addr; | |
1057 | int matches = 0; | |
1058 | unsigned int offset; | |
c906108c SS |
1059 | |
1060 | if (!arg) | |
1061 | error_no_arg ("address"); | |
1062 | ||
1063 | addr = parse_and_eval_address (arg); | |
1064 | ALL_OBJSECTIONS (objfile, osect) | |
c5aa993b JM |
1065 | { |
1066 | sect = osect->the_bfd_section; | |
1067 | sect_addr = overlay_mapped_address (addr, sect); | |
c906108c | 1068 | |
c5aa993b JM |
1069 | if (osect->addr <= sect_addr && sect_addr < osect->endaddr && |
1070 | (msymbol = lookup_minimal_symbol_by_pc_section (sect_addr, sect))) | |
1071 | { | |
1072 | matches = 1; | |
1073 | offset = sect_addr - SYMBOL_VALUE_ADDRESS (msymbol); | |
1074 | if (offset) | |
1075 | printf_filtered ("%s + %u in ", | |
1076 | SYMBOL_SOURCE_NAME (msymbol), offset); | |
1077 | else | |
1078 | printf_filtered ("%s in ", | |
1079 | SYMBOL_SOURCE_NAME (msymbol)); | |
1080 | if (pc_in_unmapped_range (addr, sect)) | |
1081 | printf_filtered ("load address range of "); | |
1082 | if (section_is_overlay (sect)) | |
1083 | printf_filtered ("%s overlay ", | |
1084 | section_is_mapped (sect) ? "mapped" : "unmapped"); | |
1085 | printf_filtered ("section %s", sect->name); | |
1086 | printf_filtered ("\n"); | |
1087 | } | |
1088 | } | |
c906108c SS |
1089 | if (matches == 0) |
1090 | printf_filtered ("No symbol matches %s.\n", arg); | |
1091 | } | |
1092 | ||
1093 | /* ARGSUSED */ | |
1094 | static void | |
fba45db2 | 1095 | address_info (char *exp, int from_tty) |
c906108c SS |
1096 | { |
1097 | register struct symbol *sym; | |
1098 | register struct minimal_symbol *msymbol; | |
1099 | register long val; | |
1100 | register long basereg; | |
1101 | asection *section; | |
1102 | CORE_ADDR load_addr; | |
1103 | int is_a_field_of_this; /* C++: lookup_symbol sets this to nonzero | |
1104 | if exp is a field of `this'. */ | |
1105 | ||
1106 | if (exp == 0) | |
1107 | error ("Argument required."); | |
1108 | ||
c5aa993b JM |
1109 | sym = lookup_symbol (exp, get_selected_block (), VAR_NAMESPACE, |
1110 | &is_a_field_of_this, (struct symtab **) NULL); | |
c906108c SS |
1111 | if (sym == NULL) |
1112 | { | |
1113 | if (is_a_field_of_this) | |
1114 | { | |
1115 | printf_filtered ("Symbol \""); | |
1116 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1117 | current_language->la_language, DMGL_ANSI); | |
1118 | printf_filtered ("\" is a field of the local class variable `this'\n"); | |
1119 | return; | |
1120 | } | |
1121 | ||
1122 | msymbol = lookup_minimal_symbol (exp, NULL, NULL); | |
1123 | ||
1124 | if (msymbol != NULL) | |
1125 | { | |
1126 | load_addr = SYMBOL_VALUE_ADDRESS (msymbol); | |
1127 | ||
1128 | printf_filtered ("Symbol \""); | |
1129 | fprintf_symbol_filtered (gdb_stdout, exp, | |
1130 | current_language->la_language, DMGL_ANSI); | |
1131 | printf_filtered ("\" is at "); | |
1132 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1133 | printf_filtered (" in a file compiled without debugging"); | |
1134 | section = SYMBOL_BFD_SECTION (msymbol); | |
1135 | if (section_is_overlay (section)) | |
1136 | { | |
1137 | load_addr = overlay_unmapped_address (load_addr, section); | |
1138 | printf_filtered (",\n -- loaded at "); | |
1139 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1140 | printf_filtered (" in overlay section %s", section->name); | |
1141 | } | |
1142 | printf_filtered (".\n"); | |
1143 | } | |
1144 | else | |
1145 | error ("No symbol \"%s\" in current context.", exp); | |
1146 | return; | |
1147 | } | |
1148 | ||
1149 | printf_filtered ("Symbol \""); | |
1150 | fprintf_symbol_filtered (gdb_stdout, SYMBOL_NAME (sym), | |
1151 | current_language->la_language, DMGL_ANSI); | |
1152 | printf_filtered ("\" is "); | |
c5aa993b | 1153 | val = SYMBOL_VALUE (sym); |
c906108c SS |
1154 | basereg = SYMBOL_BASEREG (sym); |
1155 | section = SYMBOL_BFD_SECTION (sym); | |
1156 | ||
1157 | switch (SYMBOL_CLASS (sym)) | |
1158 | { | |
1159 | case LOC_CONST: | |
1160 | case LOC_CONST_BYTES: | |
1161 | printf_filtered ("constant"); | |
1162 | break; | |
1163 | ||
1164 | case LOC_LABEL: | |
1165 | printf_filtered ("a label at address "); | |
c5aa993b | 1166 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym), |
c906108c SS |
1167 | 1, gdb_stdout); |
1168 | if (section_is_overlay (section)) | |
1169 | { | |
1170 | load_addr = overlay_unmapped_address (load_addr, section); | |
1171 | printf_filtered (",\n -- loaded at "); | |
1172 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1173 | printf_filtered (" in overlay section %s", section->name); | |
1174 | } | |
1175 | break; | |
1176 | ||
1177 | case LOC_REGISTER: | |
1178 | printf_filtered ("a variable in register %s", REGISTER_NAME (val)); | |
1179 | break; | |
1180 | ||
1181 | case LOC_STATIC: | |
1182 | printf_filtered ("static storage at address "); | |
c5aa993b | 1183 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym), |
c906108c SS |
1184 | 1, gdb_stdout); |
1185 | if (section_is_overlay (section)) | |
1186 | { | |
1187 | load_addr = overlay_unmapped_address (load_addr, section); | |
1188 | printf_filtered (",\n -- loaded at "); | |
1189 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1190 | printf_filtered (" in overlay section %s", section->name); | |
1191 | } | |
1192 | break; | |
1193 | ||
1194 | case LOC_INDIRECT: | |
1195 | printf_filtered ("external global (indirect addressing), at address *("); | |
1196 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym), | |
1197 | 1, gdb_stdout); | |
1198 | printf_filtered (")"); | |
1199 | if (section_is_overlay (section)) | |
1200 | { | |
1201 | load_addr = overlay_unmapped_address (load_addr, section); | |
1202 | printf_filtered (",\n -- loaded at "); | |
1203 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1204 | printf_filtered (" in overlay section %s", section->name); | |
1205 | } | |
1206 | break; | |
1207 | ||
1208 | case LOC_REGPARM: | |
1209 | printf_filtered ("an argument in register %s", REGISTER_NAME (val)); | |
1210 | break; | |
1211 | ||
1212 | case LOC_REGPARM_ADDR: | |
1213 | printf_filtered ("address of an argument in register %s", REGISTER_NAME (val)); | |
1214 | break; | |
1215 | ||
1216 | case LOC_ARG: | |
1217 | printf_filtered ("an argument at offset %ld", val); | |
1218 | break; | |
1219 | ||
1220 | case LOC_LOCAL_ARG: | |
1221 | printf_filtered ("an argument at frame offset %ld", val); | |
1222 | break; | |
1223 | ||
1224 | case LOC_LOCAL: | |
1225 | printf_filtered ("a local variable at frame offset %ld", val); | |
1226 | break; | |
1227 | ||
1228 | case LOC_REF_ARG: | |
1229 | printf_filtered ("a reference argument at offset %ld", val); | |
1230 | break; | |
1231 | ||
1232 | case LOC_BASEREG: | |
1233 | printf_filtered ("a variable at offset %ld from register %s", | |
c5aa993b | 1234 | val, REGISTER_NAME (basereg)); |
c906108c SS |
1235 | break; |
1236 | ||
1237 | case LOC_BASEREG_ARG: | |
1238 | printf_filtered ("an argument at offset %ld from register %s", | |
c5aa993b | 1239 | val, REGISTER_NAME (basereg)); |
c906108c SS |
1240 | break; |
1241 | ||
1242 | case LOC_TYPEDEF: | |
1243 | printf_filtered ("a typedef"); | |
1244 | break; | |
1245 | ||
1246 | case LOC_BLOCK: | |
1247 | printf_filtered ("a function at address "); | |
1248 | #ifdef GDB_TARGET_MASK_DISAS_PC | |
1249 | print_address_numeric | |
c5aa993b | 1250 | (load_addr = GDB_TARGET_MASK_DISAS_PC (BLOCK_START (SYMBOL_BLOCK_VALUE (sym))), |
c906108c SS |
1251 | 1, gdb_stdout); |
1252 | #else | |
c5aa993b | 1253 | print_address_numeric (load_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)), |
c906108c SS |
1254 | 1, gdb_stdout); |
1255 | #endif | |
1256 | if (section_is_overlay (section)) | |
1257 | { | |
1258 | load_addr = overlay_unmapped_address (load_addr, section); | |
1259 | printf_filtered (",\n -- loaded at "); | |
1260 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1261 | printf_filtered (" in overlay section %s", section->name); | |
1262 | } | |
1263 | break; | |
1264 | ||
1265 | case LOC_UNRESOLVED: | |
1266 | { | |
1267 | struct minimal_symbol *msym; | |
1268 | ||
1269 | msym = lookup_minimal_symbol (SYMBOL_NAME (sym), NULL, NULL); | |
1270 | if (msym == NULL) | |
1271 | printf_filtered ("unresolved"); | |
1272 | else | |
1273 | { | |
1274 | section = SYMBOL_BFD_SECTION (msym); | |
1275 | printf_filtered ("static storage at address "); | |
c5aa993b | 1276 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (msym), |
c906108c SS |
1277 | 1, gdb_stdout); |
1278 | if (section_is_overlay (section)) | |
1279 | { | |
1280 | load_addr = overlay_unmapped_address (load_addr, section); | |
1281 | printf_filtered (",\n -- loaded at "); | |
1282 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1283 | printf_filtered (" in overlay section %s", section->name); | |
1284 | } | |
1285 | } | |
1286 | } | |
1287 | break; | |
1288 | ||
1289 | case LOC_THREAD_LOCAL_STATIC: | |
1290 | printf_filtered ( | |
c5aa993b JM |
1291 | "a thread-local variable at offset %ld from the thread base register %s", |
1292 | val, REGISTER_NAME (basereg)); | |
c906108c SS |
1293 | break; |
1294 | ||
1295 | case LOC_OPTIMIZED_OUT: | |
1296 | printf_filtered ("optimized out"); | |
1297 | break; | |
c5aa993b | 1298 | |
c906108c SS |
1299 | default: |
1300 | printf_filtered ("of unknown (botched) type"); | |
1301 | break; | |
1302 | } | |
1303 | printf_filtered (".\n"); | |
1304 | } | |
1305 | \f | |
1306 | void | |
fba45db2 | 1307 | x_command (char *exp, int from_tty) |
c906108c SS |
1308 | { |
1309 | struct expression *expr; | |
1310 | struct format_data fmt; | |
1311 | struct cleanup *old_chain; | |
1312 | struct value *val; | |
1313 | ||
1314 | fmt.format = last_format; | |
1315 | fmt.size = last_size; | |
1316 | fmt.count = 1; | |
1317 | ||
1318 | if (exp && *exp == '/') | |
1319 | { | |
1320 | exp++; | |
1321 | fmt = decode_format (&exp, last_format, last_size); | |
1322 | } | |
1323 | ||
1324 | /* If we have an expression, evaluate it and use it as the address. */ | |
1325 | ||
1326 | if (exp != 0 && *exp != 0) | |
1327 | { | |
1328 | expr = parse_expression (exp); | |
1329 | /* Cause expression not to be there any more | |
c5aa993b JM |
1330 | if this command is repeated with Newline. |
1331 | But don't clobber a user-defined command's definition. */ | |
c906108c SS |
1332 | if (from_tty) |
1333 | *exp = 0; | |
c13c43fd | 1334 | old_chain = make_cleanup (free_current_contents, &expr); |
c906108c SS |
1335 | val = evaluate_expression (expr); |
1336 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_REF) | |
1337 | val = value_ind (val); | |
1338 | /* In rvalue contexts, such as this, functions are coerced into | |
c5aa993b | 1339 | pointers to functions. This makes "x/i main" work. */ |
c0d8fd9a MS |
1340 | if (/* last_format == 'i' && */ |
1341 | TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_FUNC | |
c5aa993b | 1342 | && VALUE_LVAL (val) == lval_memory) |
c906108c SS |
1343 | next_address = VALUE_ADDRESS (val); |
1344 | else | |
1345 | next_address = value_as_pointer (val); | |
1346 | if (VALUE_BFD_SECTION (val)) | |
1347 | next_section = VALUE_BFD_SECTION (val); | |
1348 | do_cleanups (old_chain); | |
1349 | } | |
1350 | ||
1351 | do_examine (fmt, next_address, next_section); | |
1352 | ||
1353 | /* If the examine succeeds, we remember its size and format for next time. */ | |
1354 | last_size = fmt.size; | |
1355 | last_format = fmt.format; | |
1356 | ||
1357 | /* Set a couple of internal variables if appropriate. */ | |
1358 | if (last_examine_value) | |
1359 | { | |
1360 | /* Make last address examined available to the user as $_. Use | |
c5aa993b | 1361 | the correct pointer type. */ |
4478b372 JB |
1362 | struct type *pointer_type |
1363 | = lookup_pointer_type (VALUE_TYPE (last_examine_value)); | |
c906108c | 1364 | set_internalvar (lookup_internalvar ("_"), |
4478b372 JB |
1365 | value_from_pointer (pointer_type, |
1366 | last_examine_address)); | |
c5aa993b JM |
1367 | |
1368 | /* Make contents of last address examined available to the user as $__. */ | |
c906108c SS |
1369 | /* If the last value has not been fetched from memory then don't |
1370 | fetch it now - instead mark it by voiding the $__ variable. */ | |
1371 | if (VALUE_LAZY (last_examine_value)) | |
1372 | set_internalvar (lookup_internalvar ("__"), | |
1373 | allocate_value (builtin_type_void)); | |
1374 | else | |
1375 | set_internalvar (lookup_internalvar ("__"), last_examine_value); | |
1376 | } | |
1377 | } | |
c906108c | 1378 | \f |
c5aa993b | 1379 | |
c906108c SS |
1380 | /* Add an expression to the auto-display chain. |
1381 | Specify the expression. */ | |
1382 | ||
1383 | static void | |
fba45db2 | 1384 | display_command (char *exp, int from_tty) |
c906108c SS |
1385 | { |
1386 | struct format_data fmt; | |
1387 | register struct expression *expr; | |
1388 | register struct display *new; | |
1389 | int display_it = 1; | |
1390 | ||
1391 | #if defined(TUI) | |
1392 | if (tui_version && *exp == '$') | |
c5aa993b JM |
1393 | display_it = ((TuiStatus) tuiDo ( |
1394 | (TuiOpaqueFuncPtr) tui_vSetLayoutTo, exp) == TUI_FAILURE); | |
c906108c SS |
1395 | #endif |
1396 | ||
1397 | if (display_it) | |
1398 | { | |
1399 | if (exp == 0) | |
1400 | { | |
1401 | do_displays (); | |
1402 | return; | |
1403 | } | |
1404 | ||
1405 | if (*exp == '/') | |
1406 | { | |
1407 | exp++; | |
1408 | fmt = decode_format (&exp, 0, 0); | |
1409 | if (fmt.size && fmt.format == 0) | |
1410 | fmt.format = 'x'; | |
1411 | if (fmt.format == 'i' || fmt.format == 's') | |
1412 | fmt.size = 'b'; | |
1413 | } | |
1414 | else | |
1415 | { | |
1416 | fmt.format = 0; | |
1417 | fmt.size = 0; | |
1418 | fmt.count = 0; | |
1419 | } | |
1420 | ||
1421 | innermost_block = 0; | |
1422 | expr = parse_expression (exp); | |
1423 | ||
1424 | new = (struct display *) xmalloc (sizeof (struct display)); | |
1425 | ||
1426 | new->exp = expr; | |
1427 | new->block = innermost_block; | |
1428 | new->next = display_chain; | |
1429 | new->number = ++display_number; | |
1430 | new->format = fmt; | |
1431 | new->status = enabled; | |
1432 | display_chain = new; | |
1433 | ||
1434 | if (from_tty && target_has_execution) | |
1435 | do_one_display (new); | |
1436 | ||
1437 | dont_repeat (); | |
1438 | } | |
1439 | } | |
1440 | ||
1441 | static void | |
fba45db2 | 1442 | free_display (struct display *d) |
c906108c | 1443 | { |
b8c9b27d KB |
1444 | xfree (d->exp); |
1445 | xfree (d); | |
c906108c SS |
1446 | } |
1447 | ||
1448 | /* Clear out the display_chain. | |
1449 | Done when new symtabs are loaded, since this invalidates | |
1450 | the types stored in many expressions. */ | |
1451 | ||
1452 | void | |
fba45db2 | 1453 | clear_displays (void) |
c906108c SS |
1454 | { |
1455 | register struct display *d; | |
1456 | ||
1457 | while ((d = display_chain) != NULL) | |
1458 | { | |
b8c9b27d | 1459 | xfree (d->exp); |
c906108c | 1460 | display_chain = d->next; |
b8c9b27d | 1461 | xfree (d); |
c906108c SS |
1462 | } |
1463 | } | |
1464 | ||
1465 | /* Delete the auto-display number NUM. */ | |
1466 | ||
1467 | static void | |
fba45db2 | 1468 | delete_display (int num) |
c906108c SS |
1469 | { |
1470 | register struct display *d1, *d; | |
1471 | ||
1472 | if (!display_chain) | |
1473 | error ("No display number %d.", num); | |
1474 | ||
1475 | if (display_chain->number == num) | |
1476 | { | |
1477 | d1 = display_chain; | |
1478 | display_chain = d1->next; | |
1479 | free_display (d1); | |
1480 | } | |
1481 | else | |
c5aa993b | 1482 | for (d = display_chain;; d = d->next) |
c906108c SS |
1483 | { |
1484 | if (d->next == 0) | |
1485 | error ("No display number %d.", num); | |
1486 | if (d->next->number == num) | |
1487 | { | |
1488 | d1 = d->next; | |
1489 | d->next = d1->next; | |
1490 | free_display (d1); | |
1491 | break; | |
1492 | } | |
1493 | } | |
1494 | } | |
1495 | ||
1496 | /* Delete some values from the auto-display chain. | |
1497 | Specify the element numbers. */ | |
1498 | ||
1499 | static void | |
fba45db2 | 1500 | undisplay_command (char *args, int from_tty) |
c906108c SS |
1501 | { |
1502 | register char *p = args; | |
1503 | register char *p1; | |
1504 | register int num; | |
1505 | ||
1506 | if (args == 0) | |
1507 | { | |
1508 | if (query ("Delete all auto-display expressions? ")) | |
1509 | clear_displays (); | |
1510 | dont_repeat (); | |
1511 | return; | |
1512 | } | |
1513 | ||
1514 | while (*p) | |
1515 | { | |
1516 | p1 = p; | |
c5aa993b JM |
1517 | while (*p1 >= '0' && *p1 <= '9') |
1518 | p1++; | |
c906108c SS |
1519 | if (*p1 && *p1 != ' ' && *p1 != '\t') |
1520 | error ("Arguments must be display numbers."); | |
1521 | ||
1522 | num = atoi (p); | |
1523 | ||
1524 | delete_display (num); | |
1525 | ||
1526 | p = p1; | |
c5aa993b JM |
1527 | while (*p == ' ' || *p == '\t') |
1528 | p++; | |
c906108c SS |
1529 | } |
1530 | dont_repeat (); | |
1531 | } | |
1532 | ||
1533 | /* Display a single auto-display. | |
1534 | Do nothing if the display cannot be printed in the current context, | |
1535 | or if the display is disabled. */ | |
1536 | ||
1537 | static void | |
fba45db2 | 1538 | do_one_display (struct display *d) |
c906108c SS |
1539 | { |
1540 | int within_current_scope; | |
1541 | ||
1542 | if (d->status == disabled) | |
1543 | return; | |
1544 | ||
1545 | if (d->block) | |
1546 | within_current_scope = contained_in (get_selected_block (), d->block); | |
1547 | else | |
1548 | within_current_scope = 1; | |
1549 | if (!within_current_scope) | |
1550 | return; | |
1551 | ||
1552 | current_display_number = d->number; | |
1553 | ||
1554 | annotate_display_begin (); | |
1555 | printf_filtered ("%d", d->number); | |
1556 | annotate_display_number_end (); | |
1557 | printf_filtered (": "); | |
1558 | if (d->format.size) | |
1559 | { | |
1560 | CORE_ADDR addr; | |
1561 | value_ptr val; | |
1562 | ||
1563 | annotate_display_format (); | |
1564 | ||
1565 | printf_filtered ("x/"); | |
1566 | if (d->format.count != 1) | |
1567 | printf_filtered ("%d", d->format.count); | |
1568 | printf_filtered ("%c", d->format.format); | |
1569 | if (d->format.format != 'i' && d->format.format != 's') | |
1570 | printf_filtered ("%c", d->format.size); | |
1571 | printf_filtered (" "); | |
1572 | ||
1573 | annotate_display_expression (); | |
1574 | ||
1575 | print_expression (d->exp, gdb_stdout); | |
1576 | annotate_display_expression_end (); | |
1577 | ||
1578 | if (d->format.count != 1) | |
1579 | printf_filtered ("\n"); | |
1580 | else | |
1581 | printf_filtered (" "); | |
c5aa993b | 1582 | |
c906108c SS |
1583 | val = evaluate_expression (d->exp); |
1584 | addr = value_as_pointer (val); | |
1585 | if (d->format.format == 'i') | |
1586 | addr = ADDR_BITS_REMOVE (addr); | |
1587 | ||
1588 | annotate_display_value (); | |
1589 | ||
1590 | do_examine (d->format, addr, VALUE_BFD_SECTION (val)); | |
1591 | } | |
1592 | else | |
1593 | { | |
1594 | annotate_display_format (); | |
1595 | ||
1596 | if (d->format.format) | |
1597 | printf_filtered ("/%c ", d->format.format); | |
1598 | ||
1599 | annotate_display_expression (); | |
1600 | ||
1601 | print_expression (d->exp, gdb_stdout); | |
1602 | annotate_display_expression_end (); | |
1603 | ||
1604 | printf_filtered (" = "); | |
1605 | ||
1606 | annotate_display_expression (); | |
1607 | ||
1608 | print_formatted (evaluate_expression (d->exp), | |
2acceee2 | 1609 | d->format.format, d->format.size, gdb_stdout); |
c906108c SS |
1610 | printf_filtered ("\n"); |
1611 | } | |
1612 | ||
1613 | annotate_display_end (); | |
1614 | ||
1615 | gdb_flush (gdb_stdout); | |
1616 | current_display_number = -1; | |
1617 | } | |
1618 | ||
1619 | /* Display all of the values on the auto-display chain which can be | |
1620 | evaluated in the current scope. */ | |
1621 | ||
1622 | void | |
fba45db2 | 1623 | do_displays (void) |
c906108c SS |
1624 | { |
1625 | register struct display *d; | |
1626 | ||
1627 | for (d = display_chain; d; d = d->next) | |
1628 | do_one_display (d); | |
1629 | } | |
1630 | ||
1631 | /* Delete the auto-display which we were in the process of displaying. | |
1632 | This is done when there is an error or a signal. */ | |
1633 | ||
1634 | void | |
fba45db2 | 1635 | disable_display (int num) |
c906108c SS |
1636 | { |
1637 | register struct display *d; | |
1638 | ||
1639 | for (d = display_chain; d; d = d->next) | |
1640 | if (d->number == num) | |
1641 | { | |
1642 | d->status = disabled; | |
1643 | return; | |
1644 | } | |
1645 | printf_unfiltered ("No display number %d.\n", num); | |
1646 | } | |
c5aa993b | 1647 | |
c906108c | 1648 | void |
fba45db2 | 1649 | disable_current_display (void) |
c906108c SS |
1650 | { |
1651 | if (current_display_number >= 0) | |
1652 | { | |
1653 | disable_display (current_display_number); | |
1654 | fprintf_unfiltered (gdb_stderr, "Disabling display %d to avoid infinite recursion.\n", | |
c5aa993b | 1655 | current_display_number); |
c906108c SS |
1656 | } |
1657 | current_display_number = -1; | |
1658 | } | |
1659 | ||
1660 | static void | |
fba45db2 | 1661 | display_info (char *ignore, int from_tty) |
c906108c SS |
1662 | { |
1663 | register struct display *d; | |
1664 | ||
1665 | if (!display_chain) | |
1666 | printf_unfiltered ("There are no auto-display expressions now.\n"); | |
1667 | else | |
c5aa993b | 1668 | printf_filtered ("Auto-display expressions now in effect:\n\ |
c906108c SS |
1669 | Num Enb Expression\n"); |
1670 | ||
1671 | for (d = display_chain; d; d = d->next) | |
1672 | { | |
c5aa993b | 1673 | printf_filtered ("%d: %c ", d->number, "ny"[(int) d->status]); |
c906108c SS |
1674 | if (d->format.size) |
1675 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
c5aa993b | 1676 | d->format.format); |
c906108c SS |
1677 | else if (d->format.format) |
1678 | printf_filtered ("/%c ", d->format.format); | |
1679 | print_expression (d->exp, gdb_stdout); | |
1680 | if (d->block && !contained_in (get_selected_block (), d->block)) | |
1681 | printf_filtered (" (cannot be evaluated in the current context)"); | |
1682 | printf_filtered ("\n"); | |
1683 | gdb_flush (gdb_stdout); | |
1684 | } | |
1685 | } | |
1686 | ||
1687 | static void | |
fba45db2 | 1688 | enable_display (char *args, int from_tty) |
c906108c SS |
1689 | { |
1690 | register char *p = args; | |
1691 | register char *p1; | |
1692 | register int num; | |
1693 | register struct display *d; | |
1694 | ||
1695 | if (p == 0) | |
1696 | { | |
1697 | for (d = display_chain; d; d = d->next) | |
1698 | d->status = enabled; | |
1699 | } | |
1700 | else | |
1701 | while (*p) | |
1702 | { | |
1703 | p1 = p; | |
1704 | while (*p1 >= '0' && *p1 <= '9') | |
1705 | p1++; | |
1706 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
1707 | error ("Arguments must be display numbers."); | |
c5aa993b | 1708 | |
c906108c | 1709 | num = atoi (p); |
c5aa993b | 1710 | |
c906108c SS |
1711 | for (d = display_chain; d; d = d->next) |
1712 | if (d->number == num) | |
1713 | { | |
1714 | d->status = enabled; | |
1715 | goto win; | |
1716 | } | |
1717 | printf_unfiltered ("No display number %d.\n", num); | |
1718 | win: | |
1719 | p = p1; | |
1720 | while (*p == ' ' || *p == '\t') | |
1721 | p++; | |
1722 | } | |
1723 | } | |
1724 | ||
1725 | /* ARGSUSED */ | |
1726 | static void | |
fba45db2 | 1727 | disable_display_command (char *args, int from_tty) |
c906108c SS |
1728 | { |
1729 | register char *p = args; | |
1730 | register char *p1; | |
1731 | register struct display *d; | |
1732 | ||
1733 | if (p == 0) | |
1734 | { | |
1735 | for (d = display_chain; d; d = d->next) | |
1736 | d->status = disabled; | |
1737 | } | |
1738 | else | |
1739 | while (*p) | |
1740 | { | |
1741 | p1 = p; | |
1742 | while (*p1 >= '0' && *p1 <= '9') | |
1743 | p1++; | |
1744 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
1745 | error ("Arguments must be display numbers."); | |
c5aa993b | 1746 | |
c906108c SS |
1747 | disable_display (atoi (p)); |
1748 | ||
1749 | p = p1; | |
1750 | while (*p == ' ' || *p == '\t') | |
1751 | p++; | |
1752 | } | |
1753 | } | |
c906108c | 1754 | \f |
c5aa993b | 1755 | |
c906108c SS |
1756 | /* Print the value in stack frame FRAME of a variable |
1757 | specified by a struct symbol. */ | |
1758 | ||
1759 | void | |
fba45db2 KB |
1760 | print_variable_value (struct symbol *var, struct frame_info *frame, |
1761 | struct ui_file *stream) | |
c906108c SS |
1762 | { |
1763 | value_ptr val = read_var_value (var, frame); | |
1764 | ||
1765 | value_print (val, stream, 0, Val_pretty_default); | |
1766 | } | |
1767 | ||
1768 | /* Print the arguments of a stack frame, given the function FUNC | |
1769 | running in that frame (as a symbol), the info on the frame, | |
1770 | and the number of args according to the stack frame (or -1 if unknown). */ | |
1771 | ||
1772 | /* References here and elsewhere to "number of args according to the | |
1773 | stack frame" appear in all cases to refer to "number of ints of args | |
1774 | according to the stack frame". At least for VAX, i386, isi. */ | |
1775 | ||
1776 | void | |
fba45db2 KB |
1777 | print_frame_args (struct symbol *func, struct frame_info *fi, int num, |
1778 | struct ui_file *stream) | |
c906108c SS |
1779 | { |
1780 | struct block *b = NULL; | |
1781 | int nsyms = 0; | |
1782 | int first = 1; | |
1783 | register int i; | |
1784 | register struct symbol *sym; | |
1785 | register value_ptr val; | |
1786 | /* Offset of next stack argument beyond the one we have seen that is | |
1787 | at the highest offset. | |
1788 | -1 if we haven't come to a stack argument yet. */ | |
1789 | long highest_offset = -1; | |
1790 | int arg_size; | |
1791 | /* Number of ints of arguments that we have printed so far. */ | |
1792 | int args_printed = 0; | |
8b93c638 | 1793 | #ifdef UI_OUT |
d493eb33 | 1794 | struct cleanup *old_chain, *list_chain; |
8b93c638 JM |
1795 | struct ui_stream *stb; |
1796 | ||
1797 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 1798 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
8b93c638 | 1799 | #endif /* UI_OUT */ |
c906108c SS |
1800 | |
1801 | if (func) | |
1802 | { | |
1803 | b = SYMBOL_BLOCK_VALUE (func); | |
1804 | nsyms = BLOCK_NSYMS (b); | |
1805 | } | |
1806 | ||
1807 | for (i = 0; i < nsyms; i++) | |
1808 | { | |
1809 | QUIT; | |
1810 | sym = BLOCK_SYM (b, i); | |
1811 | ||
1812 | /* Keep track of the highest stack argument offset seen, and | |
c5aa993b | 1813 | skip over any kinds of symbols we don't care about. */ |
c906108c | 1814 | |
c5aa993b | 1815 | switch (SYMBOL_CLASS (sym)) |
c906108c | 1816 | { |
c5aa993b JM |
1817 | case LOC_ARG: |
1818 | case LOC_REF_ARG: | |
1819 | { | |
1820 | long current_offset = SYMBOL_VALUE (sym); | |
1821 | arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); | |
1822 | ||
1823 | /* Compute address of next argument by adding the size of | |
1824 | this argument and rounding to an int boundary. */ | |
c13c43fd PDM |
1825 | current_offset = |
1826 | ((current_offset + arg_size + sizeof (int) - 1) | |
c5aa993b JM |
1827 | & ~(sizeof (int) - 1)); |
1828 | ||
1829 | /* If this is the highest offset seen yet, set highest_offset. */ | |
1830 | if (highest_offset == -1 | |
1831 | || (current_offset > highest_offset)) | |
1832 | highest_offset = current_offset; | |
1833 | ||
1834 | /* Add the number of ints we're about to print to args_printed. */ | |
1835 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); | |
1836 | } | |
c906108c | 1837 | |
c5aa993b JM |
1838 | /* We care about types of symbols, but don't need to keep track of |
1839 | stack offsets in them. */ | |
1840 | case LOC_REGPARM: | |
1841 | case LOC_REGPARM_ADDR: | |
1842 | case LOC_LOCAL_ARG: | |
1843 | case LOC_BASEREG_ARG: | |
1844 | break; | |
c906108c | 1845 | |
c5aa993b JM |
1846 | /* Other types of symbols we just skip over. */ |
1847 | default: | |
1848 | continue; | |
1849 | } | |
c906108c SS |
1850 | |
1851 | /* We have to look up the symbol because arguments can have | |
c5aa993b JM |
1852 | two entries (one a parameter, one a local) and the one we |
1853 | want is the local, which lookup_symbol will find for us. | |
1854 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1855 | small structure and gcc2 when the argument type is float | |
1856 | and it is passed as a double and converted to float by | |
1857 | the prologue (in the latter case the type of the LOC_ARG | |
1858 | symbol is double and the type of the LOC_LOCAL symbol is | |
1859 | float). */ | |
c906108c | 1860 | /* But if the parameter name is null, don't try it. |
c5aa993b JM |
1861 | Null parameter names occur on the RS/6000, for traceback tables. |
1862 | FIXME, should we even print them? */ | |
c906108c SS |
1863 | |
1864 | if (*SYMBOL_NAME (sym)) | |
1865 | { | |
1866 | struct symbol *nsym; | |
1867 | nsym = lookup_symbol | |
1868 | (SYMBOL_NAME (sym), | |
c5aa993b | 1869 | b, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL); |
c906108c SS |
1870 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER) |
1871 | { | |
1872 | /* There is a LOC_ARG/LOC_REGISTER pair. This means that | |
c5aa993b JM |
1873 | it was passed on the stack and loaded into a register, |
1874 | or passed in a register and stored in a stack slot. | |
1875 | GDB 3.x used the LOC_ARG; GDB 4.0-4.11 used the LOC_REGISTER. | |
1876 | ||
1877 | Reasons for using the LOC_ARG: | |
1878 | (1) because find_saved_registers may be slow for remote | |
1879 | debugging, | |
1880 | (2) because registers are often re-used and stack slots | |
1881 | rarely (never?) are. Therefore using the stack slot is | |
1882 | much less likely to print garbage. | |
1883 | ||
1884 | Reasons why we might want to use the LOC_REGISTER: | |
1885 | (1) So that the backtrace prints the same value as | |
1886 | "print foo". I see no compelling reason why this needs | |
1887 | to be the case; having the backtrace print the value which | |
1888 | was passed in, and "print foo" print the value as modified | |
1889 | within the called function, makes perfect sense to me. | |
1890 | ||
1891 | Additional note: It might be nice if "info args" displayed | |
1892 | both values. | |
1893 | One more note: There is a case with sparc structure passing | |
1894 | where we need to use the LOC_REGISTER, but this is dealt with | |
1895 | by creating a single LOC_REGPARM in symbol reading. */ | |
c906108c SS |
1896 | |
1897 | /* Leave sym (the LOC_ARG) alone. */ | |
1898 | ; | |
1899 | } | |
1900 | else | |
1901 | sym = nsym; | |
1902 | } | |
1903 | ||
8b93c638 JM |
1904 | #ifdef UI_OUT |
1905 | /* Print the current arg. */ | |
1906 | if (!first) | |
1907 | ui_out_text (uiout, ", "); | |
1908 | ui_out_wrap_hint (uiout, " "); | |
1909 | ||
1910 | annotate_arg_begin (); | |
1911 | ||
666547aa | 1912 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); |
8b93c638 JM |
1913 | fprintf_symbol_filtered (stb->stream, SYMBOL_SOURCE_NAME (sym), |
1914 | SYMBOL_LANGUAGE (sym), DMGL_PARAMS | DMGL_ANSI); | |
1915 | ui_out_field_stream (uiout, "name", stb); | |
1916 | annotate_arg_name_end (); | |
1917 | ui_out_text (uiout, "="); | |
1918 | #else | |
c906108c | 1919 | /* Print the current arg. */ |
c5aa993b | 1920 | if (!first) |
c906108c SS |
1921 | fprintf_filtered (stream, ", "); |
1922 | wrap_here (" "); | |
1923 | ||
1924 | annotate_arg_begin (); | |
1925 | ||
1926 | fprintf_symbol_filtered (stream, SYMBOL_SOURCE_NAME (sym), | |
c5aa993b | 1927 | SYMBOL_LANGUAGE (sym), DMGL_PARAMS | DMGL_ANSI); |
c906108c SS |
1928 | annotate_arg_name_end (); |
1929 | fputs_filtered ("=", stream); | |
8b93c638 | 1930 | #endif |
c906108c SS |
1931 | |
1932 | /* Avoid value_print because it will deref ref parameters. We just | |
c5aa993b JM |
1933 | want to print their addresses. Print ??? for args whose address |
1934 | we do not know. We pass 2 as "recurse" to val_print because our | |
1935 | standard indentation here is 4 spaces, and val_print indents | |
1936 | 2 for each recurse. */ | |
c906108c SS |
1937 | val = read_var_value (sym, fi); |
1938 | ||
1939 | annotate_arg_value (val == NULL ? NULL : VALUE_TYPE (val)); | |
1940 | ||
1941 | if (val) | |
1942 | { | |
7a292a7a | 1943 | if (GDB_TARGET_IS_D10V |
c5aa993b JM |
1944 | && SYMBOL_CLASS (sym) == LOC_REGPARM && TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_PTR) |
1945 | TYPE_LENGTH (VALUE_TYPE (val)) = 2; | |
8b93c638 JM |
1946 | #ifdef UI_OUT |
1947 | val_print (VALUE_TYPE (val), VALUE_CONTENTS (val), 0, | |
1948 | VALUE_ADDRESS (val), | |
1949 | stb->stream, 0, 0, 2, Val_no_prettyprint); | |
1950 | ui_out_field_stream (uiout, "value", stb); | |
1951 | } | |
1952 | else | |
1953 | ui_out_text (uiout, "???"); | |
1954 | ||
666547aa | 1955 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 1956 | do_cleanups (list_chain); |
8b93c638 | 1957 | #else |
c906108c | 1958 | val_print (VALUE_TYPE (val), VALUE_CONTENTS (val), 0, |
c5aa993b JM |
1959 | VALUE_ADDRESS (val), |
1960 | stream, 0, 0, 2, Val_no_prettyprint); | |
c906108c SS |
1961 | } |
1962 | else | |
1963 | fputs_filtered ("???", stream); | |
8b93c638 | 1964 | #endif |
c906108c SS |
1965 | |
1966 | annotate_arg_end (); | |
1967 | ||
1968 | first = 0; | |
1969 | } | |
1970 | ||
1971 | /* Don't print nameless args in situations where we don't know | |
1972 | enough about the stack to find them. */ | |
1973 | if (num != -1) | |
1974 | { | |
1975 | long start; | |
1976 | ||
1977 | if (highest_offset == -1) | |
1978 | start = FRAME_ARGS_SKIP; | |
1979 | else | |
1980 | start = highest_offset; | |
1981 | ||
1982 | print_frame_nameless_args (fi, start, num - args_printed, | |
1983 | first, stream); | |
1984 | } | |
8b93c638 JM |
1985 | #ifdef UI_OUT |
1986 | do_cleanups (old_chain); | |
1987 | #endif /* no UI_OUT */ | |
c906108c SS |
1988 | } |
1989 | ||
1990 | /* Print nameless args on STREAM. | |
1991 | FI is the frameinfo for this frame, START is the offset | |
1992 | of the first nameless arg, and NUM is the number of nameless args to | |
1993 | print. FIRST is nonzero if this is the first argument (not just | |
1994 | the first nameless arg). */ | |
1995 | ||
1996 | static void | |
fba45db2 KB |
1997 | print_frame_nameless_args (struct frame_info *fi, long start, int num, |
1998 | int first, struct ui_file *stream) | |
c906108c SS |
1999 | { |
2000 | int i; | |
2001 | CORE_ADDR argsaddr; | |
2002 | long arg_value; | |
2003 | ||
2004 | for (i = 0; i < num; i++) | |
2005 | { | |
2006 | QUIT; | |
2007 | #ifdef NAMELESS_ARG_VALUE | |
2008 | NAMELESS_ARG_VALUE (fi, start, &arg_value); | |
2009 | #else | |
2010 | argsaddr = FRAME_ARGS_ADDRESS (fi); | |
2011 | if (!argsaddr) | |
2012 | return; | |
2013 | ||
2014 | arg_value = read_memory_integer (argsaddr + start, sizeof (int)); | |
2015 | #endif | |
2016 | ||
2017 | if (!first) | |
2018 | fprintf_filtered (stream, ", "); | |
2019 | ||
2020 | #ifdef PRINT_NAMELESS_INTEGER | |
2021 | PRINT_NAMELESS_INTEGER (stream, arg_value); | |
2022 | #else | |
2023 | #ifdef PRINT_TYPELESS_INTEGER | |
2024 | PRINT_TYPELESS_INTEGER (stream, builtin_type_int, (LONGEST) arg_value); | |
2025 | #else | |
2026 | fprintf_filtered (stream, "%ld", arg_value); | |
2027 | #endif /* PRINT_TYPELESS_INTEGER */ | |
2028 | #endif /* PRINT_NAMELESS_INTEGER */ | |
2029 | first = 0; | |
2030 | start += sizeof (int); | |
2031 | } | |
2032 | } | |
2033 | \f | |
2034 | /* ARGSUSED */ | |
2035 | static void | |
fba45db2 | 2036 | printf_command (char *arg, int from_tty) |
c906108c SS |
2037 | { |
2038 | register char *f = NULL; | |
2039 | register char *s = arg; | |
2040 | char *string = NULL; | |
2041 | value_ptr *val_args; | |
2042 | char *substrings; | |
2043 | char *current_substring; | |
2044 | int nargs = 0; | |
2045 | int allocated_args = 20; | |
2046 | struct cleanup *old_cleanups; | |
2047 | ||
2048 | val_args = (value_ptr *) xmalloc (allocated_args * sizeof (value_ptr)); | |
c13c43fd | 2049 | old_cleanups = make_cleanup (free_current_contents, &val_args); |
c906108c SS |
2050 | |
2051 | if (s == 0) | |
2052 | error_no_arg ("format-control string and values to print"); | |
2053 | ||
2054 | /* Skip white space before format string */ | |
c5aa993b JM |
2055 | while (*s == ' ' || *s == '\t') |
2056 | s++; | |
c906108c SS |
2057 | |
2058 | /* A format string should follow, enveloped in double quotes */ | |
2059 | if (*s++ != '"') | |
2060 | error ("Bad format string, missing '\"'."); | |
2061 | ||
2062 | /* Parse the format-control string and copy it into the string STRING, | |
2063 | processing some kinds of escape sequence. */ | |
2064 | ||
2065 | f = string = (char *) alloca (strlen (s) + 1); | |
2066 | ||
2067 | while (*s != '"') | |
2068 | { | |
2069 | int c = *s++; | |
2070 | switch (c) | |
2071 | { | |
2072 | case '\0': | |
2073 | error ("Bad format string, non-terminated '\"'."); | |
2074 | ||
2075 | case '\\': | |
2076 | switch (c = *s++) | |
2077 | { | |
2078 | case '\\': | |
2079 | *f++ = '\\'; | |
2080 | break; | |
2081 | case 'a': | |
c906108c | 2082 | *f++ = '\a'; |
c906108c SS |
2083 | break; |
2084 | case 'b': | |
2085 | *f++ = '\b'; | |
2086 | break; | |
2087 | case 'f': | |
2088 | *f++ = '\f'; | |
2089 | break; | |
2090 | case 'n': | |
2091 | *f++ = '\n'; | |
2092 | break; | |
2093 | case 'r': | |
2094 | *f++ = '\r'; | |
2095 | break; | |
2096 | case 't': | |
2097 | *f++ = '\t'; | |
2098 | break; | |
2099 | case 'v': | |
2100 | *f++ = '\v'; | |
2101 | break; | |
2102 | case '"': | |
2103 | *f++ = '"'; | |
2104 | break; | |
2105 | default: | |
2106 | /* ??? TODO: handle other escape sequences */ | |
2107 | error ("Unrecognized escape character \\%c in format string.", | |
2108 | c); | |
2109 | } | |
2110 | break; | |
2111 | ||
2112 | default: | |
2113 | *f++ = c; | |
2114 | } | |
2115 | } | |
2116 | ||
2117 | /* Skip over " and following space and comma. */ | |
2118 | s++; | |
2119 | *f++ = '\0'; | |
c5aa993b JM |
2120 | while (*s == ' ' || *s == '\t') |
2121 | s++; | |
c906108c SS |
2122 | |
2123 | if (*s != ',' && *s != 0) | |
2124 | error ("Invalid argument syntax"); | |
2125 | ||
c5aa993b JM |
2126 | if (*s == ',') |
2127 | s++; | |
2128 | while (*s == ' ' || *s == '\t') | |
2129 | s++; | |
c906108c SS |
2130 | |
2131 | /* Need extra space for the '\0's. Doubling the size is sufficient. */ | |
2132 | substrings = alloca (strlen (string) * 2); | |
2133 | current_substring = substrings; | |
2134 | ||
2135 | { | |
2136 | /* Now scan the string for %-specs and see what kinds of args they want. | |
2137 | argclass[I] classifies the %-specs so we can give printf_filtered | |
2138 | something of the right size. */ | |
2139 | ||
c5aa993b JM |
2140 | enum argclass |
2141 | { | |
2142 | no_arg, int_arg, string_arg, double_arg, long_long_arg | |
2143 | }; | |
c906108c SS |
2144 | enum argclass *argclass; |
2145 | enum argclass this_argclass; | |
2146 | char *last_arg; | |
2147 | int nargs_wanted; | |
2148 | int lcount; | |
2149 | int i; | |
2150 | ||
2151 | argclass = (enum argclass *) alloca (strlen (s) * sizeof *argclass); | |
2152 | nargs_wanted = 0; | |
2153 | f = string; | |
2154 | last_arg = string; | |
2155 | while (*f) | |
2156 | if (*f++ == '%') | |
2157 | { | |
2158 | lcount = 0; | |
c5aa993b | 2159 | while (strchr ("0123456789.hlL-+ #", *f)) |
c906108c SS |
2160 | { |
2161 | if (*f == 'l' || *f == 'L') | |
2162 | lcount++; | |
2163 | f++; | |
2164 | } | |
2165 | switch (*f) | |
2166 | { | |
2167 | case 's': | |
2168 | this_argclass = string_arg; | |
2169 | break; | |
2170 | ||
2171 | case 'e': | |
2172 | case 'f': | |
2173 | case 'g': | |
2174 | this_argclass = double_arg; | |
2175 | break; | |
2176 | ||
2177 | case '*': | |
2178 | error ("`*' not supported for precision or width in printf"); | |
2179 | ||
2180 | case 'n': | |
2181 | error ("Format specifier `n' not supported in printf"); | |
2182 | ||
2183 | case '%': | |
2184 | this_argclass = no_arg; | |
2185 | break; | |
2186 | ||
2187 | default: | |
2188 | if (lcount > 1) | |
2189 | this_argclass = long_long_arg; | |
2190 | else | |
2191 | this_argclass = int_arg; | |
2192 | break; | |
2193 | } | |
2194 | f++; | |
2195 | if (this_argclass != no_arg) | |
2196 | { | |
2197 | strncpy (current_substring, last_arg, f - last_arg); | |
2198 | current_substring += f - last_arg; | |
2199 | *current_substring++ = '\0'; | |
2200 | last_arg = f; | |
2201 | argclass[nargs_wanted++] = this_argclass; | |
2202 | } | |
2203 | } | |
2204 | ||
2205 | /* Now, parse all arguments and evaluate them. | |
2206 | Store the VALUEs in VAL_ARGS. */ | |
2207 | ||
2208 | while (*s != '\0') | |
2209 | { | |
2210 | char *s1; | |
2211 | if (nargs == allocated_args) | |
2212 | val_args = (value_ptr *) xrealloc ((char *) val_args, | |
2213 | (allocated_args *= 2) | |
2214 | * sizeof (value_ptr)); | |
2215 | s1 = s; | |
2216 | val_args[nargs] = parse_to_comma_and_eval (&s1); | |
c5aa993b | 2217 | |
c906108c SS |
2218 | /* If format string wants a float, unchecked-convert the value to |
2219 | floating point of the same size */ | |
c5aa993b | 2220 | |
c906108c SS |
2221 | if (argclass[nargs] == double_arg) |
2222 | { | |
2223 | struct type *type = VALUE_TYPE (val_args[nargs]); | |
2224 | if (TYPE_LENGTH (type) == sizeof (float)) | |
c5aa993b | 2225 | VALUE_TYPE (val_args[nargs]) = builtin_type_float; |
c906108c | 2226 | if (TYPE_LENGTH (type) == sizeof (double)) |
c5aa993b | 2227 | VALUE_TYPE (val_args[nargs]) = builtin_type_double; |
c906108c SS |
2228 | } |
2229 | nargs++; | |
2230 | s = s1; | |
2231 | if (*s == ',') | |
2232 | s++; | |
2233 | } | |
c5aa993b | 2234 | |
c906108c SS |
2235 | if (nargs != nargs_wanted) |
2236 | error ("Wrong number of arguments for specified format-string"); | |
2237 | ||
2238 | /* Now actually print them. */ | |
2239 | current_substring = substrings; | |
2240 | for (i = 0; i < nargs; i++) | |
2241 | { | |
2242 | switch (argclass[i]) | |
2243 | { | |
2244 | case string_arg: | |
2245 | { | |
2246 | char *str; | |
2247 | CORE_ADDR tem; | |
2248 | int j; | |
2249 | tem = value_as_pointer (val_args[i]); | |
2250 | ||
2251 | /* This is a %s argument. Find the length of the string. */ | |
c5aa993b | 2252 | for (j = 0;; j++) |
c906108c SS |
2253 | { |
2254 | char c; | |
2255 | QUIT; | |
d4b2399a | 2256 | read_memory (tem + j, &c, 1); |
c906108c SS |
2257 | if (c == 0) |
2258 | break; | |
2259 | } | |
2260 | ||
2261 | /* Copy the string contents into a string inside GDB. */ | |
2262 | str = (char *) alloca (j + 1); | |
7b92f6e1 MS |
2263 | if (j != 0) |
2264 | read_memory (tem, str, j); | |
c906108c SS |
2265 | str[j] = 0; |
2266 | ||
2267 | printf_filtered (current_substring, str); | |
2268 | } | |
2269 | break; | |
2270 | case double_arg: | |
2271 | { | |
2272 | double val = value_as_double (val_args[i]); | |
2273 | printf_filtered (current_substring, val); | |
2274 | break; | |
2275 | } | |
2276 | case long_long_arg: | |
2277 | #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG) | |
2278 | { | |
2279 | long long val = value_as_long (val_args[i]); | |
2280 | printf_filtered (current_substring, val); | |
2281 | break; | |
2282 | } | |
2283 | #else | |
2284 | error ("long long not supported in printf"); | |
2285 | #endif | |
2286 | case int_arg: | |
2287 | { | |
2288 | /* FIXME: there should be separate int_arg and long_arg. */ | |
2289 | long val = value_as_long (val_args[i]); | |
2290 | printf_filtered (current_substring, val); | |
2291 | break; | |
2292 | } | |
c5aa993b JM |
2293 | default: /* purecov: deadcode */ |
2294 | error ("internal error in printf_command"); /* purecov: deadcode */ | |
c906108c SS |
2295 | } |
2296 | /* Skip to the next substring. */ | |
2297 | current_substring += strlen (current_substring) + 1; | |
2298 | } | |
2299 | /* Print the portion of the format string after the last argument. */ | |
2300 | printf_filtered (last_arg); | |
2301 | } | |
2302 | do_cleanups (old_cleanups); | |
2303 | } | |
2304 | \f | |
2305 | /* Dump a specified section of assembly code. With no command line | |
2306 | arguments, this command will dump the assembly code for the | |
2307 | function surrounding the pc value in the selected frame. With one | |
2308 | argument, it will dump the assembly code surrounding that pc value. | |
2309 | Two arguments are interpeted as bounds within which to dump | |
2310 | assembly. */ | |
2311 | ||
2312 | /* ARGSUSED */ | |
2313 | static void | |
fba45db2 | 2314 | disassemble_command (char *arg, int from_tty) |
c906108c SS |
2315 | { |
2316 | CORE_ADDR low, high; | |
2317 | char *name; | |
2318 | CORE_ADDR pc, pc_masked; | |
2319 | char *space_index; | |
2320 | #if 0 | |
2321 | asection *section; | |
2322 | #endif | |
2323 | ||
2324 | name = NULL; | |
2325 | if (!arg) | |
2326 | { | |
2327 | if (!selected_frame) | |
2328 | error ("No frame selected.\n"); | |
2329 | ||
2330 | pc = get_frame_pc (selected_frame); | |
2331 | if (find_pc_partial_function (pc, &name, &low, &high) == 0) | |
2332 | error ("No function contains program counter for selected frame.\n"); | |
2333 | #if defined(TUI) | |
2334 | else if (tui_version) | |
c5aa993b JM |
2335 | low = (CORE_ADDR) tuiDo ((TuiOpaqueFuncPtr) tui_vGetLowDisassemblyAddress, |
2336 | (Opaque) low, | |
2337 | (Opaque) pc); | |
c906108c SS |
2338 | #endif |
2339 | low += FUNCTION_START_OFFSET; | |
2340 | } | |
2341 | else if (!(space_index = (char *) strchr (arg, ' '))) | |
2342 | { | |
2343 | /* One argument. */ | |
2344 | pc = parse_and_eval_address (arg); | |
2345 | if (find_pc_partial_function (pc, &name, &low, &high) == 0) | |
2346 | error ("No function contains specified address.\n"); | |
2347 | #if defined(TUI) | |
2348 | else if (tui_version) | |
c5aa993b JM |
2349 | low = (CORE_ADDR) tuiDo ((TuiOpaqueFuncPtr) tui_vGetLowDisassemblyAddress, |
2350 | (Opaque) low, | |
2351 | (Opaque) pc); | |
c906108c SS |
2352 | #endif |
2353 | #if 0 | |
2354 | if (overlay_debugging) | |
2355 | { | |
2356 | section = find_pc_overlay (pc); | |
2357 | if (pc_in_unmapped_range (pc, section)) | |
2358 | { | |
2359 | /* find_pc_partial_function will have returned low and high | |
c5aa993b JM |
2360 | relative to the symbolic (mapped) address range. Need to |
2361 | translate them back to the unmapped range where PC is. */ | |
2362 | low = overlay_unmapped_address (low, section); | |
c906108c SS |
2363 | high = overlay_unmapped_address (high, section); |
2364 | } | |
2365 | } | |
2366 | #endif | |
2367 | low += FUNCTION_START_OFFSET; | |
2368 | } | |
2369 | else | |
2370 | { | |
2371 | /* Two arguments. */ | |
2372 | *space_index = '\0'; | |
2373 | low = parse_and_eval_address (arg); | |
2374 | high = parse_and_eval_address (space_index + 1); | |
2375 | } | |
2376 | ||
2377 | #if defined(TUI) | |
2378 | if (!tui_version || | |
c5aa993b | 2379 | m_winPtrIsNull (disassemWin) || !disassemWin->generic.isVisible) |
c906108c SS |
2380 | #endif |
2381 | { | |
2382 | printf_filtered ("Dump of assembler code "); | |
2383 | if (name != NULL) | |
2384 | { | |
2385 | printf_filtered ("for function %s:\n", name); | |
2386 | } | |
2387 | else | |
2388 | { | |
2389 | printf_filtered ("from "); | |
2390 | print_address_numeric (low, 1, gdb_stdout); | |
2391 | printf_filtered (" to "); | |
2392 | print_address_numeric (high, 1, gdb_stdout); | |
2393 | printf_filtered (":\n"); | |
2394 | } | |
2395 | ||
2396 | /* Dump the specified range. */ | |
2397 | pc = low; | |
2398 | ||
2399 | #ifdef GDB_TARGET_MASK_DISAS_PC | |
2400 | pc_masked = GDB_TARGET_MASK_DISAS_PC (pc); | |
2401 | #else | |
2402 | pc_masked = pc; | |
2403 | #endif | |
2404 | ||
2405 | while (pc_masked < high) | |
2406 | { | |
2407 | QUIT; | |
2408 | print_address (pc_masked, gdb_stdout); | |
2409 | printf_filtered (":\t"); | |
2410 | /* We often wrap here if there are long symbolic names. */ | |
2411 | wrap_here (" "); | |
2412 | pc += print_insn (pc, gdb_stdout); | |
2413 | printf_filtered ("\n"); | |
2414 | ||
2415 | #ifdef GDB_TARGET_MASK_DISAS_PC | |
2416 | pc_masked = GDB_TARGET_MASK_DISAS_PC (pc); | |
2417 | #else | |
2418 | pc_masked = pc; | |
2419 | #endif | |
2420 | } | |
2421 | printf_filtered ("End of assembler dump.\n"); | |
2422 | gdb_flush (gdb_stdout); | |
2423 | } | |
2424 | #if defined(TUI) | |
2425 | else | |
2426 | { | |
c5aa993b JM |
2427 | tuiDo ((TuiOpaqueFuncPtr) tui_vAddWinToLayout, DISASSEM_WIN); |
2428 | tuiDo ((TuiOpaqueFuncPtr) tui_vUpdateSourceWindowsWithAddr, low); | |
c906108c SS |
2429 | } |
2430 | #endif | |
2431 | } | |
2432 | ||
2433 | /* Print the instruction at address MEMADDR in debugged memory, | |
2434 | on STREAM. Returns length of the instruction, in bytes. */ | |
2435 | ||
2436 | static int | |
fba45db2 | 2437 | print_insn (CORE_ADDR memaddr, struct ui_file *stream) |
c906108c SS |
2438 | { |
2439 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
2440 | TARGET_PRINT_INSN_INFO->endian = BFD_ENDIAN_BIG; | |
2441 | else | |
2442 | TARGET_PRINT_INSN_INFO->endian = BFD_ENDIAN_LITTLE; | |
2443 | ||
2444 | if (TARGET_ARCHITECTURE != NULL) | |
2445 | TARGET_PRINT_INSN_INFO->mach = TARGET_ARCHITECTURE->mach; | |
2446 | /* else: should set .mach=0 but some disassemblers don't grok this */ | |
2447 | ||
2448 | return TARGET_PRINT_INSN (memaddr, TARGET_PRINT_INSN_INFO); | |
2449 | } | |
c906108c | 2450 | \f |
c5aa993b | 2451 | |
c906108c | 2452 | void |
fba45db2 | 2453 | _initialize_printcmd (void) |
c906108c | 2454 | { |
c94fdfd0 EZ |
2455 | struct cmd_list_element *c; |
2456 | ||
c906108c SS |
2457 | current_display_number = -1; |
2458 | ||
2459 | add_info ("address", address_info, | |
c5aa993b | 2460 | "Describe where symbol SYM is stored."); |
c906108c | 2461 | |
c5aa993b | 2462 | add_info ("symbol", sym_info, |
c906108c SS |
2463 | "Describe what symbol is at location ADDR.\n\ |
2464 | Only for symbols with fixed locations (global or static scope)."); | |
2465 | ||
2466 | add_com ("x", class_vars, x_command, | |
2467 | concat ("Examine memory: x/FMT ADDRESS.\n\ | |
2468 | ADDRESS is an expression for the memory address to examine.\n\ | |
2469 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2470 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
2471 | t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n", | |
c5aa993b | 2472 | "Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ |
c906108c SS |
2473 | The specified number of objects of the specified size are printed\n\ |
2474 | according to the format.\n\n\ | |
2475 | Defaults for format and size letters are those previously used.\n\ | |
2476 | Default count is 1. Default address is following last thing printed\n\ | |
2477 | with this command or \"print\".", NULL)); | |
2478 | ||
c94fdfd0 EZ |
2479 | c = add_com ("disassemble", class_vars, disassemble_command, |
2480 | "Disassemble a specified section of memory.\n\ | |
c906108c SS |
2481 | Default is the function surrounding the pc of the selected frame.\n\ |
2482 | With a single argument, the function surrounding that address is dumped.\n\ | |
2483 | Two arguments are taken as a range of memory to dump."); | |
c94fdfd0 | 2484 | c->completer = location_completer; |
c906108c | 2485 | if (xdb_commands) |
c5aa993b | 2486 | add_com_alias ("va", "disassemble", class_xdb, 0); |
c906108c SS |
2487 | |
2488 | #if 0 | |
2489 | add_com ("whereis", class_vars, whereis_command, | |
2490 | "Print line number and file of definition of variable."); | |
2491 | #endif | |
c5aa993b | 2492 | |
c906108c SS |
2493 | add_info ("display", display_info, |
2494 | "Expressions to display when program stops, with code numbers."); | |
2495 | ||
2496 | add_cmd ("undisplay", class_vars, undisplay_command, | |
2497 | "Cancel some expressions to be displayed when program stops.\n\ | |
2498 | Arguments are the code numbers of the expressions to stop displaying.\n\ | |
2499 | No argument means cancel all automatic-display expressions.\n\ | |
2500 | \"delete display\" has the same effect as this command.\n\ | |
2501 | Do \"info display\" to see current list of code numbers.", | |
c5aa993b | 2502 | &cmdlist); |
c906108c SS |
2503 | |
2504 | add_com ("display", class_vars, display_command, | |
2505 | "Print value of expression EXP each time the program stops.\n\ | |
2506 | /FMT may be used before EXP as in the \"print\" command.\n\ | |
2507 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2508 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2509 | and examining is done as in the \"x\" command.\n\n\ | |
2510 | With no argument, display all currently requested auto-display expressions.\n\ | |
2511 | Use \"undisplay\" to cancel display requests previously made." | |
c5aa993b | 2512 | ); |
c906108c | 2513 | |
c5aa993b | 2514 | add_cmd ("display", class_vars, enable_display, |
c906108c SS |
2515 | "Enable some expressions to be displayed when program stops.\n\ |
2516 | Arguments are the code numbers of the expressions to resume displaying.\n\ | |
2517 | No argument means enable all automatic-display expressions.\n\ | |
2518 | Do \"info display\" to see current list of code numbers.", &enablelist); | |
2519 | ||
c5aa993b | 2520 | add_cmd ("display", class_vars, disable_display_command, |
c906108c SS |
2521 | "Disable some expressions to be displayed when program stops.\n\ |
2522 | Arguments are the code numbers of the expressions to stop displaying.\n\ | |
2523 | No argument means disable all automatic-display expressions.\n\ | |
2524 | Do \"info display\" to see current list of code numbers.", &disablelist); | |
2525 | ||
c5aa993b | 2526 | add_cmd ("display", class_vars, undisplay_command, |
c906108c SS |
2527 | "Cancel some expressions to be displayed when program stops.\n\ |
2528 | Arguments are the code numbers of the expressions to stop displaying.\n\ | |
2529 | No argument means cancel all automatic-display expressions.\n\ | |
2530 | Do \"info display\" to see current list of code numbers.", &deletelist); | |
2531 | ||
2532 | add_com ("printf", class_vars, printf_command, | |
c5aa993b | 2533 | "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ |
c906108c SS |
2534 | This is useful for formatted output in user-defined commands."); |
2535 | ||
2536 | add_com ("output", class_vars, output_command, | |
2537 | "Like \"print\" but don't put in value history and don't print newline.\n\ | |
2538 | This is useful in user-defined commands."); | |
2539 | ||
2540 | add_prefix_cmd ("set", class_vars, set_command, | |
c5aa993b | 2541 | concat ("Evaluate expression EXP and assign result to variable VAR, using assignment\n\ |
c906108c SS |
2542 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2543 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2544 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2545 | variable in the program being debugged. EXP is any valid expression.\n", | |
c5aa993b | 2546 | "Use \"set variable\" for variables with names identical to set subcommands.\n\ |
c906108c SS |
2547 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
2548 | You can see these environment settings with the \"show\" command.", NULL), | |
c5aa993b | 2549 | &setlist, "set ", 1, &cmdlist); |
c906108c | 2550 | if (dbx_commands) |
c5aa993b | 2551 | add_com ("assign", class_vars, set_command, concat ("Evaluate expression \ |
c906108c SS |
2552 | EXP and assign result to variable VAR, using assignment\n\ |
2553 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ | |
2554 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2555 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2556 | variable in the program being debugged. EXP is any valid expression.\n", | |
c5aa993b | 2557 | "Use \"set variable\" for variables with names identical to set subcommands.\n\ |
c906108c SS |
2558 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
2559 | You can see these environment settings with the \"show\" command.", NULL)); | |
2560 | ||
2561 | /* "call" is the same as "set", but handy for dbx users to call fns. */ | |
c94fdfd0 EZ |
2562 | c = add_com ("call", class_vars, call_command, |
2563 | "Call a function in the program.\n\ | |
c906108c SS |
2564 | The argument is the function name and arguments, in the notation of the\n\ |
2565 | current working language. The result is printed and saved in the value\n\ | |
2566 | history, if it is not void."); | |
c94fdfd0 | 2567 | c->completer = location_completer; |
c906108c SS |
2568 | |
2569 | add_cmd ("variable", class_vars, set_command, | |
c5aa993b | 2570 | "Evaluate expression EXP and assign result to variable VAR, using assignment\n\ |
c906108c SS |
2571 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2572 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2573 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2574 | variable in the program being debugged. EXP is any valid expression.\n\ | |
2575 | This may usually be abbreviated to simply \"set\".", | |
c5aa993b | 2576 | &setlist); |
c906108c | 2577 | |
c94fdfd0 | 2578 | c = add_com ("print", class_vars, print_command, |
c906108c SS |
2579 | concat ("Print value of expression EXP.\n\ |
2580 | Variables accessible are those of the lexical environment of the selected\n\ | |
2581 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2582 | \n\ | |
2583 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2584 | $$NUM refers to NUM'th value back from the last one.\n\ | |
2585 | Names starting with $ refer to registers (with the values they would have\n", | |
c5aa993b | 2586 | "if the program were to return to the stack frame now selected, restoring\n\ |
c906108c SS |
2587 | all registers saved by frames farther in) or else to debugger\n\ |
2588 | \"convenience\" variables (any such name not a known register).\n\ | |
2589 | Use assignment expressions to give values to convenience variables.\n", | |
2590 | "\n\ | |
2591 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ | |
2592 | @ is a binary operator for treating consecutive data objects\n\ | |
2593 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2594 | element is FOO, whose second element is stored in the space following\n\ | |
2595 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
2596 | resides in memory.\n", | |
2597 | "\n\ | |
2598 | EXP may be preceded with /FMT, where FMT is a format letter\n\ | |
2599 | but no count or size letter (see \"x\" command).", NULL)); | |
c94fdfd0 | 2600 | c->completer = location_completer; |
c906108c SS |
2601 | add_com_alias ("p", "print", class_vars, 1); |
2602 | ||
c94fdfd0 | 2603 | c = add_com ("inspect", class_vars, inspect_command, |
c5aa993b | 2604 | "Same as \"print\" command, except that if you are running in the epoch\n\ |
c906108c | 2605 | environment, the value is printed in its own window."); |
c94fdfd0 | 2606 | c->completer = location_completer; |
c906108c SS |
2607 | |
2608 | add_show_from_set ( | |
c5aa993b JM |
2609 | add_set_cmd ("max-symbolic-offset", no_class, var_uinteger, |
2610 | (char *) &max_symbolic_offset, | |
2611 | "Set the largest offset that will be printed in <symbol+1234> form.", | |
2612 | &setprintlist), | |
2613 | &showprintlist); | |
c906108c | 2614 | add_show_from_set ( |
c5aa993b JM |
2615 | add_set_cmd ("symbol-filename", no_class, var_boolean, |
2616 | (char *) &print_symbol_filename, | |
2617 | "Set printing of source filename and line number with <symbol>.", | |
2618 | &setprintlist), | |
2619 | &showprintlist); | |
c906108c SS |
2620 | |
2621 | /* For examine/instruction a single byte quantity is specified as | |
2622 | the data. This avoids problems with value_at_lazy() requiring a | |
2623 | valid data type (and rejecting VOID). */ | |
2624 | examine_i_type = init_type (TYPE_CODE_INT, 1, 0, "examine_i_type", NULL); | |
2625 | ||
2626 | examine_b_type = init_type (TYPE_CODE_INT, 1, 0, "examine_b_type", NULL); | |
2627 | examine_h_type = init_type (TYPE_CODE_INT, 2, 0, "examine_h_type", NULL); | |
2628 | examine_w_type = init_type (TYPE_CODE_INT, 4, 0, "examine_w_type", NULL); | |
2629 | examine_g_type = init_type (TYPE_CODE_INT, 8, 0, "examine_g_type", NULL); | |
2630 | ||
2631 | } |