Commit | Line | Data |
---|---|---|
bd5635a1 | 1 | /* Print values for GNU debugger GDB. |
ad3b8c4a | 2 | Copyright 1986, 87, 88, 89, 90, 91, 93, 94, 95, 1998 |
a76ef70a | 3 | Free Software Foundation, Inc. |
bd5635a1 RP |
4 | |
5 | This file is part of GDB. | |
6 | ||
36b9d39c | 7 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 8 | it under the terms of the GNU General Public License as published by |
36b9d39c JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
36b9d39c | 12 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
36b9d39c | 18 | along with this program; if not, write to the Free Software |
91550191 | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
bd5635a1 | 20 | |
bd5635a1 | 21 | #include "defs.h" |
2b576293 | 22 | #include "gdb_string.h" |
bd5635a1 RP |
23 | #include "frame.h" |
24 | #include "symtab.h" | |
93fe4e33 | 25 | #include "gdbtypes.h" |
bd5635a1 | 26 | #include "value.h" |
c4668207 | 27 | #include "language.h" |
bd5635a1 RP |
28 | #include "expression.h" |
29 | #include "gdbcore.h" | |
30 | #include "gdbcmd.h" | |
31 | #include "target.h" | |
93fe4e33 | 32 | #include "breakpoint.h" |
4d38b5a8 | 33 | #include "demangle.h" |
199b2450 | 34 | #include "valprint.h" |
1c95d7ab | 35 | #include "annotate.h" |
d14573e3 AC |
36 | #include "symfile.h" /* for overlay functions */ |
37 | #include "objfiles.h" /* ditto */ | |
bd5635a1 RP |
38 | |
39 | extern int asm_demangle; /* Whether to demangle syms in asm printouts */ | |
36b9d39c | 40 | extern int addressprint; /* Whether to print hex addresses in HLL " */ |
bd5635a1 | 41 | |
bd5635a1 RP |
42 | struct format_data |
43 | { | |
44 | int count; | |
45 | char format; | |
46 | char size; | |
47 | }; | |
48 | ||
49 | /* Last specified output format. */ | |
50 | ||
51 | static char last_format = 'x'; | |
52 | ||
53 | /* Last specified examination size. 'b', 'h', 'w' or `q'. */ | |
54 | ||
55 | static char last_size = 'w'; | |
56 | ||
57 | /* Default address to examine next. */ | |
58 | ||
59 | static CORE_ADDR next_address; | |
60 | ||
d14573e3 AC |
61 | /* Default section to examine next. */ |
62 | ||
63 | static asection *next_section; | |
64 | ||
bd5635a1 RP |
65 | /* Last address examined. */ |
66 | ||
67 | static CORE_ADDR last_examine_address; | |
68 | ||
69 | /* Contents of last address examined. | |
70 | This is not valid past the end of the `x' command! */ | |
71 | ||
82a2edfb | 72 | static value_ptr last_examine_value; |
bd5635a1 | 73 | |
f77ad505 FF |
74 | /* Largest offset between a symbolic value and an address, that will be |
75 | printed as `0x1234 <symbol+offset>'. */ | |
76 | ||
77 | static unsigned int max_symbolic_offset = UINT_MAX; | |
78 | ||
b7ccd8e0 PS |
79 | /* Append the source filename and linenumber of the symbol when |
80 | printing a symbolic value as `<symbol at filename:linenum>' if set. */ | |
81 | static int print_symbol_filename = 0; | |
82 | ||
bd5635a1 | 83 | /* Number of auto-display expression currently being displayed. |
f77ad505 | 84 | So that we can disable it if we get an error or a signal within it. |
bd5635a1 RP |
85 | -1 when not doing one. */ |
86 | ||
87 | int current_display_number; | |
88 | ||
89 | /* Flag to low-level print routines that this value is being printed | |
90 | in an epoch window. We'd like to pass this as a parameter, but | |
91 | every routine would need to take it. Perhaps we can encapsulate | |
92 | this in the I/O stream once we have GNU stdio. */ | |
93 | ||
94 | int inspect_it = 0; | |
95 | ||
93fe4e33 JG |
96 | struct display |
97 | { | |
98 | /* Chain link to next auto-display item. */ | |
99 | struct display *next; | |
100 | /* Expression to be evaluated and displayed. */ | |
101 | struct expression *exp; | |
102 | /* Item number of this auto-display item. */ | |
103 | int number; | |
104 | /* Display format specified. */ | |
105 | struct format_data format; | |
106 | /* Innermost block required by this expression when evaluated */ | |
107 | struct block *block; | |
108 | /* Status of this display (enabled or disabled) */ | |
8f869b45 | 109 | enum enable status; |
93fe4e33 JG |
110 | }; |
111 | ||
112 | /* Chain of expressions whose values should be displayed | |
113 | automatically each time the program stops. */ | |
114 | ||
115 | static struct display *display_chain; | |
116 | ||
117 | static int display_number; | |
118 | ||
a76ef70a | 119 | /* Pointer to the target-dependent disassembly function. */ |
93fe4e33 | 120 | |
a76ef70a | 121 | int (*tm_print_insn) PARAMS ((bfd_vma, disassemble_info *)); |
91550191 | 122 | disassemble_info tm_print_insn_info; |
93fe4e33 | 123 | |
d6b6757b MS |
124 | /* Functions exported for general use: */ |
125 | ||
126 | void output_command PARAMS ((char *, int)); | |
127 | ||
128 | ||
a76ef70a | 129 | /* Prototypes for local functions. */ |
93fe4e33 | 130 | |
a76ef70a | 131 | static void delete_display PARAMS ((int)); |
93fe4e33 | 132 | |
a76ef70a | 133 | static void enable_display PARAMS ((char *, int)); |
93fe4e33 | 134 | |
a76ef70a | 135 | static void disable_display_command PARAMS ((char *, int)); |
93fe4e33 | 136 | |
a76ef70a | 137 | static void disassemble_command PARAMS ((char *, int)); |
93fe4e33 | 138 | |
a76ef70a | 139 | static void printf_command PARAMS ((char *, int)); |
93fe4e33 | 140 | |
a76ef70a SG |
141 | static void print_frame_nameless_args PARAMS ((struct frame_info *, long, |
142 | int, int, GDB_FILE *)); | |
93fe4e33 | 143 | |
a76ef70a | 144 | static void display_info PARAMS ((char *, int)); |
93fe4e33 | 145 | |
a76ef70a | 146 | static void do_one_display PARAMS ((struct display *)); |
93fe4e33 | 147 | |
a76ef70a | 148 | static void undisplay_command PARAMS ((char *, int)); |
93fe4e33 | 149 | |
a76ef70a | 150 | static void free_display PARAMS ((struct display *)); |
93fe4e33 | 151 | |
a76ef70a | 152 | static void display_command PARAMS ((char *, int)); |
93fe4e33 | 153 | |
d6b6757b | 154 | void x_command PARAMS ((char *, int)); |
93fe4e33 | 155 | |
a76ef70a | 156 | static void address_info PARAMS ((char *, int)); |
bd5635a1 | 157 | |
a76ef70a | 158 | static void set_command PARAMS ((char *, int)); |
93fe4e33 | 159 | |
a76ef70a | 160 | static void call_command PARAMS ((char *, int)); |
93fe4e33 | 161 | |
a76ef70a | 162 | static void inspect_command PARAMS ((char *, int)); |
93fe4e33 | 163 | |
a76ef70a | 164 | static void print_command PARAMS ((char *, int)); |
93fe4e33 | 165 | |
a76ef70a | 166 | static void print_command_1 PARAMS ((char *, int, int)); |
93fe4e33 | 167 | |
a76ef70a | 168 | static void validate_format PARAMS ((struct format_data, char *)); |
93fe4e33 | 169 | |
d14573e3 | 170 | static void do_examine PARAMS ((struct format_data, CORE_ADDR addr, asection *section)); |
a76ef70a SG |
171 | |
172 | static void print_formatted PARAMS ((value_ptr, int, int)); | |
173 | ||
174 | static struct format_data decode_format PARAMS ((char **, int, int)); | |
175 | ||
176 | static int print_insn PARAMS ((CORE_ADDR, GDB_FILE *)); | |
bd5635a1 | 177 | |
ad3b8c4a JM |
178 | static void sym_info PARAMS ((char *, int)); |
179 | ||
bd5635a1 RP |
180 | \f |
181 | /* Decode a format specification. *STRING_PTR should point to it. | |
182 | OFORMAT and OSIZE are used as defaults for the format and size | |
183 | if none are given in the format specification. | |
184 | If OSIZE is zero, then the size field of the returned value | |
185 | should be set only if a size is explicitly specified by the | |
186 | user. | |
187 | The structure returned describes all the data | |
188 | found in the specification. In addition, *STRING_PTR is advanced | |
189 | past the specification and past all whitespace following it. */ | |
190 | ||
93fe4e33 | 191 | static struct format_data |
bd5635a1 RP |
192 | decode_format (string_ptr, oformat, osize) |
193 | char **string_ptr; | |
93fe4e33 JG |
194 | int oformat; |
195 | int osize; | |
bd5635a1 RP |
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); | |
206 | while (*p >= '0' && *p <= '9') p++; | |
207 | ||
208 | /* Now process size or format letters that follow. */ | |
209 | ||
210 | while (1) | |
211 | { | |
212 | if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g') | |
213 | val.size = *p++; | |
bd5635a1 RP |
214 | else if (*p >= 'a' && *p <= 'z') |
215 | val.format = *p++; | |
216 | else | |
217 | break; | |
218 | } | |
219 | ||
bd5635a1 RP |
220 | while (*p == ' ' || *p == '\t') p++; |
221 | *string_ptr = p; | |
222 | ||
223 | /* Set defaults for format and size if not specified. */ | |
224 | if (val.format == '?') | |
225 | { | |
226 | if (val.size == '?') | |
227 | { | |
228 | /* Neither has been specified. */ | |
229 | val.format = oformat; | |
230 | val.size = osize; | |
231 | } | |
232 | else | |
233 | /* If a size is specified, any format makes a reasonable | |
234 | default except 'i'. */ | |
235 | val.format = oformat == 'i' ? 'x' : oformat; | |
236 | } | |
237 | else if (val.size == '?') | |
238 | switch (val.format) | |
239 | { | |
240 | case 'a': | |
241 | case 's': | |
82a2edfb | 242 | /* Pick the appropriate size for an address. */ |
a76ef70a SG |
243 | if (TARGET_PTR_BIT == 64) |
244 | val.size = osize ? 'g' : osize; | |
245 | else if (TARGET_PTR_BIT == 32) | |
246 | val.size = osize ? 'w' : osize; | |
247 | else if (TARGET_PTR_BIT == 16) | |
248 | val.size = osize ? 'h' : osize; | |
249 | else | |
250 | /* Bad value for TARGET_PTR_BIT */ | |
251 | abort (); | |
82a2edfb | 252 | break; |
bd5635a1 RP |
253 | case 'f': |
254 | /* Floating point has to be word or giantword. */ | |
255 | if (osize == 'w' || osize == 'g') | |
256 | val.size = osize; | |
257 | else | |
258 | /* Default it to giantword if the last used size is not | |
259 | appropriate. */ | |
260 | val.size = osize ? 'g' : osize; | |
261 | break; | |
262 | case 'c': | |
263 | /* Characters default to one byte. */ | |
264 | val.size = osize ? 'b' : osize; | |
265 | break; | |
266 | default: | |
267 | /* The default is the size most recently specified. */ | |
268 | val.size = osize; | |
269 | } | |
270 | ||
271 | return val; | |
272 | } | |
273 | \f | |
199b2450 | 274 | /* Print value VAL on gdb_stdout according to FORMAT, a letter or 0. |
bd5635a1 RP |
275 | Do not end with a newline. |
276 | 0 means print VAL according to its own type. | |
277 | SIZE is the letter for the size of datum being printed. | |
278 | This is used to pad hex numbers so they line up. */ | |
279 | ||
280 | static void | |
281 | print_formatted (val, format, size) | |
82a2edfb | 282 | register value_ptr val; |
93fe4e33 JG |
283 | register int format; |
284 | int size; | |
bd5635a1 | 285 | { |
91550191 SG |
286 | struct type *type = check_typedef (VALUE_TYPE (val)); |
287 | int len = TYPE_LENGTH (type); | |
bd5635a1 RP |
288 | |
289 | if (VALUE_LVAL (val) == lval_memory) | |
d14573e3 AC |
290 | { |
291 | next_address = VALUE_ADDRESS (val) + len; | |
292 | next_section = VALUE_BFD_SECTION (val); | |
293 | } | |
bd5635a1 RP |
294 | |
295 | switch (format) | |
296 | { | |
297 | case 's': | |
242c0d81 | 298 | /* FIXME: Need to handle wchar_t's here... */ |
bd5635a1 | 299 | next_address = VALUE_ADDRESS (val) |
242c0d81 | 300 | + val_print_string (VALUE_ADDRESS (val), -1, 1, gdb_stdout); |
d14573e3 | 301 | next_section = VALUE_BFD_SECTION (val); |
bd5635a1 RP |
302 | break; |
303 | ||
304 | case 'i': | |
43795ece JK |
305 | /* The old comment says |
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 | /* We often wrap here if there are long symbolic names. */ | |
19bdd57f | 310 | wrap_here (" "); |
bd5635a1 | 311 | next_address = VALUE_ADDRESS (val) |
199b2450 | 312 | + print_insn (VALUE_ADDRESS (val), gdb_stdout); |
d14573e3 | 313 | next_section = VALUE_BFD_SECTION (val); |
bd5635a1 RP |
314 | break; |
315 | ||
316 | default: | |
317 | if (format == 0 | |
91550191 SG |
318 | || TYPE_CODE (type) == TYPE_CODE_ARRAY |
319 | || TYPE_CODE (type) == TYPE_CODE_STRING | |
320 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
321 | || TYPE_CODE (type) == TYPE_CODE_UNION) | |
199b2450 | 322 | value_print (val, gdb_stdout, format, Val_pretty_default); |
bd5635a1 | 323 | else |
91550191 | 324 | print_scalar_formatted (VALUE_CONTENTS (val), type, |
199b2450 | 325 | format, size, gdb_stdout); |
bd5635a1 RP |
326 | } |
327 | } | |
328 | ||
329 | /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, | |
330 | according to letters FORMAT and SIZE on STREAM. | |
331 | FORMAT may not be zero. Formats s and i are not supported at this level. | |
332 | ||
333 | This is how the elements of an array or structure are printed | |
334 | with a format. */ | |
335 | ||
336 | void | |
337 | print_scalar_formatted (valaddr, type, format, size, stream) | |
338 | char *valaddr; | |
339 | struct type *type; | |
93fe4e33 | 340 | int format; |
bd5635a1 | 341 | int size; |
199b2450 | 342 | GDB_FILE *stream; |
bd5635a1 RP |
343 | { |
344 | LONGEST val_long; | |
91550191 | 345 | unsigned int len = TYPE_LENGTH (type); |
bd5635a1 | 346 | |
b0f61d04 JK |
347 | if (len > sizeof (LONGEST) |
348 | && (format == 't' | |
349 | || format == 'c' | |
350 | || format == 'o' | |
351 | || format == 'u' | |
352 | || format == 'd' | |
353 | || format == 'x')) | |
bd5635a1 | 354 | { |
91550191 SG |
355 | if (! TYPE_UNSIGNED (type) |
356 | || ! extract_long_unsigned_integer (valaddr, len, &val_long)) | |
357 | { | |
358 | /* We can't print it normally, but we can print it in hex. | |
359 | Printing it in the wrong radix is more useful than saying | |
360 | "use /x, you dummy". */ | |
361 | /* FIXME: we could also do octal or binary if that was the | |
362 | desired format. */ | |
363 | /* FIXME: we should be using the size field to give us a | |
364 | minimum field width to print. */ | |
365 | val_print_type_code_int (type, valaddr, stream); | |
366 | return; | |
367 | } | |
b0f61d04 | 368 | |
91550191 SG |
369 | /* If we get here, extract_long_unsigned_integer set val_long. */ |
370 | } | |
371 | else if (format != 'f') | |
2fe3b329 | 372 | val_long = unpack_long (type, valaddr); |
bd5635a1 | 373 | |
f73b07c9 JK |
374 | /* If we are printing it as unsigned, truncate it in case it is actually |
375 | a negative signed value (e.g. "print/u (short)-1" should print 65535 | |
376 | (if shorts are 16 bits) instead of 4294967295). */ | |
bd5635a1 RP |
377 | if (format != 'd') |
378 | { | |
f73b07c9 JK |
379 | if (len < sizeof (LONGEST)) |
380 | val_long &= ((LONGEST) 1 << HOST_CHAR_BIT * len) - 1; | |
bd5635a1 RP |
381 | } |
382 | ||
383 | switch (format) | |
384 | { | |
385 | case 'x': | |
386 | if (!size) | |
387 | { | |
388 | /* no size specified, like in print. Print varying # of digits. */ | |
6fe90fc8 | 389 | print_longest (stream, 'x', 1, val_long); |
bd5635a1 RP |
390 | } |
391 | else | |
6fe90fc8 JK |
392 | switch (size) |
393 | { | |
394 | case 'b': | |
395 | case 'h': | |
396 | case 'w': | |
397 | case 'g': | |
398 | print_longest (stream, size, 1, val_long); | |
399 | break; | |
400 | default: | |
401 | error ("Undefined output size \"%c\".", size); | |
402 | } | |
bd5635a1 RP |
403 | break; |
404 | ||
405 | case 'd': | |
6fe90fc8 | 406 | print_longest (stream, 'd', 1, val_long); |
bd5635a1 RP |
407 | break; |
408 | ||
409 | case 'u': | |
6fe90fc8 | 410 | print_longest (stream, 'u', 0, val_long); |
bd5635a1 RP |
411 | break; |
412 | ||
413 | case 'o': | |
414 | if (val_long) | |
6fe90fc8 | 415 | print_longest (stream, 'o', 1, val_long); |
bd5635a1 RP |
416 | else |
417 | fprintf_filtered (stream, "0"); | |
418 | break; | |
419 | ||
420 | case 'a': | |
e1ce8aa5 | 421 | print_address (unpack_pointer (type, valaddr), stream); |
bd5635a1 RP |
422 | break; |
423 | ||
424 | case 'c': | |
c4668207 | 425 | value_print (value_from_longest (builtin_type_char, val_long), stream, 0, |
bd5635a1 RP |
426 | Val_pretty_default); |
427 | break; | |
428 | ||
429 | case 'f': | |
430 | if (len == sizeof (float)) | |
431 | type = builtin_type_float; | |
432 | else if (len == sizeof (double)) | |
433 | type = builtin_type_double; | |
434 | print_floating (valaddr, type, stream); | |
435 | break; | |
436 | ||
437 | case 0: | |
438 | abort (); | |
439 | ||
19b7c2a4 JK |
440 | case 't': |
441 | /* Binary; 't' stands for "two". */ | |
442 | { | |
443 | char bits[8*(sizeof val_long) + 1]; | |
444 | char *cp = bits; | |
445 | int width; | |
446 | ||
447 | if (!size) | |
448 | width = 8*(sizeof val_long); | |
449 | else | |
450 | switch (size) | |
451 | { | |
452 | case 'b': | |
453 | width = 8; | |
454 | break; | |
455 | case 'h': | |
456 | width = 16; | |
457 | break; | |
458 | case 'w': | |
459 | width = 32; | |
460 | break; | |
461 | case 'g': | |
462 | width = 64; | |
463 | break; | |
464 | default: | |
465 | error ("Undefined output size \"%c\".", size); | |
466 | } | |
467 | ||
468 | bits[width] = '\0'; | |
469 | while (width-- > 0) | |
470 | { | |
471 | bits[width] = (val_long & 1) ? '1' : '0'; | |
472 | val_long >>= 1; | |
473 | } | |
474 | if (!size) | |
475 | { | |
476 | while (*cp && *cp == '0') | |
477 | cp++; | |
478 | if (*cp == '\0') | |
479 | cp--; | |
480 | } | |
a8a69e63 | 481 | fprintf_filtered (stream, local_binary_format_prefix()); |
19b7c2a4 | 482 | fprintf_filtered (stream, cp); |
a8a69e63 | 483 | fprintf_filtered (stream, local_binary_format_suffix()); |
19b7c2a4 JK |
484 | } |
485 | break; | |
486 | ||
bd5635a1 RP |
487 | default: |
488 | error ("Undefined output format \"%c\".", format); | |
489 | } | |
490 | } | |
491 | ||
492 | /* Specify default address for `x' command. | |
493 | `info lines' uses this. */ | |
494 | ||
495 | void | |
496 | set_next_address (addr) | |
497 | CORE_ADDR addr; | |
498 | { | |
499 | next_address = addr; | |
500 | ||
501 | /* Make address available to the user as $_. */ | |
502 | set_internalvar (lookup_internalvar ("_"), | |
c4668207 JG |
503 | value_from_longest (lookup_pointer_type (builtin_type_void), |
504 | (LONGEST) addr)); | |
bd5635a1 RP |
505 | } |
506 | ||
36b9d39c JG |
507 | /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM, |
508 | after LEADIN. Print nothing if no symbolic name is found nearby. | |
314e6bf3 | 509 | Optionally also print source file and line number, if available. |
bd5635a1 RP |
510 | DO_DEMANGLE controls whether to print a symbol in its native "raw" form, |
511 | or to interpret it as a possible C++ name and convert it back to source | |
2e4964ad | 512 | form. However note that DO_DEMANGLE can be overridden by the specific |
314e6bf3 | 513 | settings of the demangle and asm_demangle variables. */ |
bd5635a1 RP |
514 | |
515 | void | |
36b9d39c | 516 | print_address_symbolic (addr, stream, do_demangle, leadin) |
bd5635a1 | 517 | CORE_ADDR addr; |
199b2450 | 518 | GDB_FILE *stream; |
bd5635a1 | 519 | int do_demangle; |
36b9d39c | 520 | char *leadin; |
bd5635a1 | 521 | { |
314e6bf3 JG |
522 | struct minimal_symbol *msymbol; |
523 | struct symbol *symbol; | |
524 | struct symtab *symtab = 0; | |
cd5ee294 | 525 | CORE_ADDR name_location = 0; |
c0c9b923 | 526 | char *name = ""; |
d14573e3 AC |
527 | asection *section = 0; |
528 | int unmapped = 0; | |
529 | ||
530 | /* Determine if the address is in an overlay, and whether it is mapped. */ | |
531 | if (overlay_debugging) | |
532 | { | |
533 | section = find_pc_overlay (addr); | |
534 | if (pc_in_unmapped_range (addr, section)) | |
535 | { | |
536 | unmapped = 1; | |
537 | addr = overlay_mapped_address (addr, section); | |
538 | } | |
539 | } | |
540 | ||
541 | /* On some targets, add in extra "flag" bits to PC for | |
542 | disassembly. This should ensure that "rounding errors" in | |
543 | symbol addresses that are masked for disassembly favour the | |
544 | the correct symbol. */ | |
545 | ||
546 | #ifdef GDB_TARGET_UNMASK_DISAS_PC | |
547 | addr = GDB_TARGET_UNMASK_DISAS_PC (addr); | |
548 | #endif | |
bd5635a1 | 549 | |
314e6bf3 JG |
550 | /* First try to find the address in the symbol table, then |
551 | in the minsyms. Take the closest one. */ | |
552 | ||
2fe3b329 PS |
553 | /* This is defective in the sense that it only finds text symbols. So |
554 | really this is kind of pointless--we should make sure that the | |
555 | minimal symbols have everything we need (by changing that we could | |
556 | save some memory, but for many debug format--ELF/DWARF or | |
557 | anything/stabs--it would be inconvenient to eliminate those minimal | |
558 | symbols anyway). */ | |
d14573e3 AC |
559 | msymbol = lookup_minimal_symbol_by_pc_section (addr, section); |
560 | symbol = find_pc_sect_function (addr, section); | |
cd5ee294 | 561 | |
7586127f PS |
562 | if (symbol) |
563 | { | |
d14573e3 | 564 | name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol)); |
314e6bf3 JG |
565 | if (do_demangle) |
566 | name = SYMBOL_SOURCE_NAME (symbol); | |
567 | else | |
568 | name = SYMBOL_LINKAGE_NAME (symbol); | |
7586127f | 569 | } |
bd5635a1 | 570 | |
314e6bf3 JG |
571 | if (msymbol != NULL) |
572 | { | |
cd5ee294 | 573 | if (SYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL) |
314e6bf3 JG |
574 | { |
575 | /* The msymbol is closer to the address than the symbol; | |
576 | use the msymbol instead. */ | |
577 | symbol = 0; | |
578 | symtab = 0; | |
579 | name_location = SYMBOL_VALUE_ADDRESS (msymbol); | |
580 | if (do_demangle) | |
581 | name = SYMBOL_SOURCE_NAME (msymbol); | |
582 | else | |
583 | name = SYMBOL_LINKAGE_NAME (msymbol); | |
584 | } | |
7586127f | 585 | } |
cd5ee294 JK |
586 | if (symbol == NULL && msymbol == NULL) |
587 | return; | |
f77ad505 | 588 | |
d14573e3 AC |
589 | /* On some targets, mask out extra "flag" bits from PC for handsome |
590 | disassembly. */ | |
591 | ||
592 | #ifdef GDB_TARGET_MASK_DISAS_PC | |
593 | name_location = GDB_TARGET_MASK_DISAS_PC (name_location); | |
594 | addr = GDB_TARGET_MASK_DISAS_PC (addr); | |
595 | #endif | |
596 | ||
7586127f | 597 | /* If the nearest symbol is too far away, don't print anything symbolic. */ |
f77ad505 FF |
598 | |
599 | /* For when CORE_ADDR is larger than unsigned int, we do math in | |
600 | CORE_ADDR. But when we detect unsigned wraparound in the | |
601 | CORE_ADDR math, we ignore this test and print the offset, | |
602 | because addr+max_symbolic_offset has wrapped through the end | |
603 | of the address space back to the beginning, giving bogus comparison. */ | |
604 | if (addr > name_location + max_symbolic_offset | |
605 | && name_location + max_symbolic_offset > name_location) | |
606 | return; | |
607 | ||
36b9d39c | 608 | fputs_filtered (leadin, stream); |
d14573e3 AC |
609 | if (unmapped) |
610 | fputs_filtered ("<*", stream); | |
611 | else | |
612 | fputs_filtered ("<", stream); | |
7586127f | 613 | fputs_filtered (name, stream); |
f77ad505 | 614 | if (addr != name_location) |
b7ccd8e0 PS |
615 | fprintf_filtered (stream, "+%u", (unsigned int)(addr - name_location)); |
616 | ||
314e6bf3 JG |
617 | /* Append source filename and line number if desired. Give specific |
618 | line # of this addr, if we have it; else line # of the nearest symbol. */ | |
619 | if (print_symbol_filename) | |
b7ccd8e0 | 620 | { |
633c8b0a DZ |
621 | struct symtab_and_line sal; |
622 | ||
d14573e3 AC |
623 | sal = find_pc_sect_line (addr, section, 0); |
624 | ||
b7ccd8e0 PS |
625 | if (sal.symtab) |
626 | fprintf_filtered (stream, " at %s:%d", sal.symtab->filename, sal.line); | |
314e6bf3 JG |
627 | else if (symtab && symbol && symbol->line) |
628 | fprintf_filtered (stream, " at %s:%d", symtab->filename, symbol->line); | |
629 | else if (symtab) | |
630 | fprintf_filtered (stream, " in %s", symtab->filename); | |
b7ccd8e0 | 631 | } |
d14573e3 AC |
632 | if (unmapped) |
633 | fputs_filtered ("*>", stream); | |
634 | else | |
635 | fputs_filtered (">", stream); | |
bd5635a1 RP |
636 | } |
637 | ||
d24c0599 JK |
638 | /* Print address ADDR on STREAM. USE_LOCAL means the same thing as for |
639 | print_longest. */ | |
833e0d94 | 640 | void |
d24c0599 | 641 | print_address_numeric (addr, use_local, stream) |
833e0d94 | 642 | CORE_ADDR addr; |
d24c0599 | 643 | int use_local; |
833e0d94 JK |
644 | GDB_FILE *stream; |
645 | { | |
646 | /* This assumes a CORE_ADDR can fit in a LONGEST. Probably a safe | |
85c613aa | 647 | assumption. */ |
d14573e3 | 648 | print_longest (stream, 'x', use_local, (ULONGEST) addr); |
833e0d94 | 649 | } |
314e6bf3 | 650 | |
bd5635a1 RP |
651 | /* Print address ADDR symbolically on STREAM. |
652 | First print it as a number. Then perhaps print | |
653 | <SYMBOL + OFFSET> after the number. */ | |
654 | ||
655 | void | |
656 | print_address (addr, stream) | |
657 | CORE_ADDR addr; | |
199b2450 | 658 | GDB_FILE *stream; |
bd5635a1 | 659 | { |
d24c0599 | 660 | print_address_numeric (addr, 1, stream); |
36b9d39c | 661 | print_address_symbolic (addr, stream, asm_demangle, " "); |
bd5635a1 RP |
662 | } |
663 | ||
664 | /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE | |
36b9d39c JG |
665 | controls whether to print the symbolic name "raw" or demangled. |
666 | Global setting "addressprint" controls whether to print hex address | |
667 | or not. */ | |
bd5635a1 RP |
668 | |
669 | void | |
670 | print_address_demangle (addr, stream, do_demangle) | |
671 | CORE_ADDR addr; | |
199b2450 | 672 | GDB_FILE *stream; |
bd5635a1 RP |
673 | int do_demangle; |
674 | { | |
833e0d94 JK |
675 | if (addr == 0) |
676 | { | |
677 | fprintf_filtered (stream, "0"); | |
678 | } | |
679 | else if (addressprint) | |
680 | { | |
d24c0599 | 681 | print_address_numeric (addr, 1, stream); |
833e0d94 JK |
682 | print_address_symbolic (addr, stream, do_demangle, " "); |
683 | } | |
684 | else | |
685 | { | |
686 | print_address_symbolic (addr, stream, do_demangle, ""); | |
687 | } | |
bd5635a1 | 688 | } |
bd5635a1 RP |
689 | \f |
690 | ||
199b2450 TL |
691 | /* These are the types that $__ will get after an examine command of one |
692 | of these sizes. */ | |
693 | ||
242c0d81 SG |
694 | static struct type *examine_i_type; |
695 | ||
199b2450 TL |
696 | static struct type *examine_b_type; |
697 | static struct type *examine_h_type; | |
698 | static struct type *examine_w_type; | |
699 | static struct type *examine_g_type; | |
700 | ||
bd5635a1 | 701 | /* Examine data at address ADDR in format FMT. |
199b2450 | 702 | Fetch it from memory and print on gdb_stdout. */ |
bd5635a1 RP |
703 | |
704 | static void | |
d14573e3 | 705 | do_examine (fmt, addr, sect) |
bd5635a1 RP |
706 | struct format_data fmt; |
707 | CORE_ADDR addr; | |
d14573e3 | 708 | asection *sect; |
bd5635a1 RP |
709 | { |
710 | register char format = 0; | |
711 | register char size; | |
712 | register int count = 1; | |
f73b07c9 | 713 | struct type *val_type = NULL; |
bd5635a1 RP |
714 | register int i; |
715 | register int maxelts; | |
716 | ||
717 | format = fmt.format; | |
718 | size = fmt.size; | |
719 | count = fmt.count; | |
720 | next_address = addr; | |
d14573e3 | 721 | next_section = sect; |
bd5635a1 RP |
722 | |
723 | /* String or instruction format implies fetch single bytes | |
724 | regardless of the specified size. */ | |
725 | if (format == 's' || format == 'i') | |
726 | size = 'b'; | |
727 | ||
242c0d81 SG |
728 | if (format == 'i') |
729 | val_type = examine_i_type; | |
730 | else if (size == 'b') | |
199b2450 | 731 | val_type = examine_b_type; |
bd5635a1 | 732 | else if (size == 'h') |
199b2450 | 733 | val_type = examine_h_type; |
bd5635a1 | 734 | else if (size == 'w') |
199b2450 | 735 | val_type = examine_w_type; |
bd5635a1 | 736 | else if (size == 'g') |
199b2450 | 737 | val_type = examine_g_type; |
bd5635a1 RP |
738 | |
739 | maxelts = 8; | |
740 | if (size == 'w') | |
741 | maxelts = 4; | |
742 | if (size == 'g') | |
743 | maxelts = 2; | |
744 | if (format == 's' || format == 'i') | |
745 | maxelts = 1; | |
746 | ||
747 | /* Print as many objects as specified in COUNT, at most maxelts per line, | |
748 | with the address of the next one at the start of each line. */ | |
749 | ||
750 | while (count > 0) | |
751 | { | |
91550191 | 752 | QUIT; |
199b2450 | 753 | print_address (next_address, gdb_stdout); |
bd5635a1 RP |
754 | printf_filtered (":"); |
755 | for (i = maxelts; | |
756 | i > 0 && count > 0; | |
757 | i--, count--) | |
758 | { | |
759 | printf_filtered ("\t"); | |
760 | /* Note that print_formatted sets next_address for the next | |
761 | object. */ | |
762 | last_examine_address = next_address; | |
242c0d81 SG |
763 | /* The value to be displayed is not fetched greedily. |
764 | Instead, to avoid the posibility of a fetched value not | |
765 | being used, its retreval is delayed until the print code | |
766 | uses it. When examining an instruction stream, the | |
767 | disassembler will perform its own memory fetch using just | |
768 | the address stored in LAST_EXAMINE_VALUE. FIXME: Should | |
769 | the disassembler be modified so that LAST_EXAMINE_VALUE | |
770 | is left with the byte sequence from the last complete | |
771 | instruction fetched from memory? */ | |
772 | last_examine_value = value_at_lazy (val_type, next_address, sect); | |
bd5635a1 RP |
773 | print_formatted (last_examine_value, format, size); |
774 | } | |
775 | printf_filtered ("\n"); | |
199b2450 | 776 | gdb_flush (gdb_stdout); |
bd5635a1 RP |
777 | } |
778 | } | |
779 | \f | |
780 | static void | |
781 | validate_format (fmt, cmdname) | |
782 | struct format_data fmt; | |
783 | char *cmdname; | |
784 | { | |
785 | if (fmt.size != 0) | |
786 | error ("Size letters are meaningless in \"%s\" command.", cmdname); | |
787 | if (fmt.count != 1) | |
788 | error ("Item count other than 1 is meaningless in \"%s\" command.", | |
789 | cmdname); | |
790 | if (fmt.format == 'i' || fmt.format == 's') | |
791 | error ("Format letter \"%c\" is meaningless in \"%s\" command.", | |
792 | fmt.format, cmdname); | |
793 | } | |
794 | ||
7dc15bb7 JG |
795 | /* Evaluate string EXP as an expression in the current language and |
796 | print the resulting value. EXP may contain a format specifier as the | |
797 | first argument ("/x myvar" for example, to print myvar in hex). | |
798 | */ | |
799 | ||
bd5635a1 RP |
800 | static void |
801 | print_command_1 (exp, inspect, voidprint) | |
802 | char *exp; | |
803 | int inspect; | |
804 | int voidprint; | |
805 | { | |
806 | struct expression *expr; | |
807 | register struct cleanup *old_chain = 0; | |
808 | register char format = 0; | |
82a2edfb | 809 | register value_ptr val; |
bd5635a1 RP |
810 | struct format_data fmt; |
811 | int cleanup = 0; | |
812 | ||
813 | /* Pass inspect flag to the rest of the print routines in a global (sigh). */ | |
814 | inspect_it = inspect; | |
815 | ||
816 | if (exp && *exp == '/') | |
817 | { | |
818 | exp++; | |
819 | fmt = decode_format (&exp, last_format, 0); | |
820 | validate_format (fmt, "print"); | |
821 | last_format = format = fmt.format; | |
822 | } | |
823 | else | |
824 | { | |
825 | fmt.count = 1; | |
826 | fmt.format = 0; | |
827 | fmt.size = 0; | |
828 | } | |
829 | ||
830 | if (exp && *exp) | |
831 | { | |
3577f9b4 JK |
832 | extern int objectprint; |
833 | struct type *type; | |
c4668207 | 834 | expr = parse_expression (exp); |
ad3b8c4a JM |
835 | old_chain = make_cleanup ((make_cleanup_func) free_current_contents, |
836 | &expr); | |
bd5635a1 RP |
837 | cleanup = 1; |
838 | val = evaluate_expression (expr); | |
3577f9b4 JK |
839 | |
840 | /* C++: figure out what type we actually want to print it as. */ | |
841 | type = VALUE_TYPE (val); | |
842 | ||
843 | if (objectprint | |
93fe4e33 | 844 | && ( TYPE_CODE (type) == TYPE_CODE_PTR |
3577f9b4 | 845 | || TYPE_CODE (type) == TYPE_CODE_REF) |
93fe4e33 JG |
846 | && ( TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRUCT |
847 | || TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_UNION)) | |
3577f9b4 | 848 | { |
82a2edfb | 849 | value_ptr v; |
3577f9b4 JK |
850 | |
851 | v = value_from_vtable_info (val, TYPE_TARGET_TYPE (type)); | |
852 | if (v != 0) | |
853 | { | |
854 | val = v; | |
855 | type = VALUE_TYPE (val); | |
856 | } | |
857 | } | |
bd5635a1 RP |
858 | } |
859 | else | |
860 | val = access_value_history (0); | |
861 | ||
862 | if (voidprint || (val && VALUE_TYPE (val) && | |
863 | TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_VOID)) | |
864 | { | |
865 | int histindex = record_latest_value (val); | |
866 | ||
1c95d7ab JK |
867 | if (histindex >= 0) |
868 | annotate_value_history_begin (histindex, VALUE_TYPE (val)); | |
869 | else | |
870 | annotate_value_begin (VALUE_TYPE (val)); | |
96f7edbd | 871 | |
bd5635a1 | 872 | if (inspect) |
199b2450 | 873 | printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"", exp, histindex); |
bd5635a1 RP |
874 | else |
875 | if (histindex >= 0) printf_filtered ("$%d = ", histindex); | |
876 | ||
1c95d7ab JK |
877 | if (histindex >= 0) |
878 | annotate_value_history_value (); | |
9e8db445 | 879 | |
bd5635a1 RP |
880 | print_formatted (val, format, fmt.size); |
881 | printf_filtered ("\n"); | |
96f7edbd | 882 | |
1c95d7ab JK |
883 | if (histindex >= 0) |
884 | annotate_value_history_end (); | |
885 | else | |
886 | annotate_value_end (); | |
96f7edbd | 887 | |
bd5635a1 | 888 | if (inspect) |
199b2450 | 889 | printf_unfiltered("\") )\030"); |
bd5635a1 RP |
890 | } |
891 | ||
892 | if (cleanup) | |
893 | do_cleanups (old_chain); | |
894 | inspect_it = 0; /* Reset print routines to normal */ | |
895 | } | |
896 | ||
e1ce8aa5 | 897 | /* ARGSUSED */ |
bd5635a1 RP |
898 | static void |
899 | print_command (exp, from_tty) | |
900 | char *exp; | |
901 | int from_tty; | |
902 | { | |
903 | print_command_1 (exp, 0, 1); | |
904 | } | |
905 | ||
906 | /* Same as print, except in epoch, it gets its own window */ | |
e1ce8aa5 | 907 | /* ARGSUSED */ |
bd5635a1 RP |
908 | static void |
909 | inspect_command (exp, from_tty) | |
910 | char *exp; | |
911 | int from_tty; | |
912 | { | |
913 | extern int epoch_interface; | |
914 | ||
915 | print_command_1 (exp, epoch_interface, 1); | |
916 | } | |
917 | ||
918 | /* Same as print, except it doesn't print void results. */ | |
e1ce8aa5 | 919 | /* ARGSUSED */ |
bd5635a1 RP |
920 | static void |
921 | call_command (exp, from_tty) | |
922 | char *exp; | |
923 | int from_tty; | |
924 | { | |
925 | print_command_1 (exp, 0, 0); | |
926 | } | |
927 | ||
e1ce8aa5 | 928 | /* ARGSUSED */ |
d6b6757b | 929 | void |
bd5635a1 RP |
930 | output_command (exp, from_tty) |
931 | char *exp; | |
932 | int from_tty; | |
933 | { | |
934 | struct expression *expr; | |
935 | register struct cleanup *old_chain; | |
936 | register char format = 0; | |
82a2edfb | 937 | register value_ptr val; |
bd5635a1 RP |
938 | struct format_data fmt; |
939 | ||
940 | if (exp && *exp == '/') | |
941 | { | |
942 | exp++; | |
943 | fmt = decode_format (&exp, 0, 0); | |
4d38b5a8 | 944 | validate_format (fmt, "output"); |
bd5635a1 RP |
945 | format = fmt.format; |
946 | } | |
947 | ||
c4668207 | 948 | expr = parse_expression (exp); |
ad3b8c4a | 949 | old_chain = make_cleanup ((make_cleanup_func) free_current_contents, &expr); |
bd5635a1 RP |
950 | |
951 | val = evaluate_expression (expr); | |
952 | ||
1c95d7ab | 953 | annotate_value_begin (VALUE_TYPE (val)); |
9e8db445 | 954 | |
bd5635a1 RP |
955 | print_formatted (val, format, fmt.size); |
956 | ||
1c95d7ab | 957 | annotate_value_end (); |
9e8db445 | 958 | |
bd5635a1 RP |
959 | do_cleanups (old_chain); |
960 | } | |
961 | ||
e1ce8aa5 | 962 | /* ARGSUSED */ |
bd5635a1 RP |
963 | static void |
964 | set_command (exp, from_tty) | |
965 | char *exp; | |
966 | int from_tty; | |
967 | { | |
c4668207 | 968 | struct expression *expr = parse_expression (exp); |
bd5635a1 | 969 | register struct cleanup *old_chain |
ad3b8c4a | 970 | = make_cleanup ((make_cleanup_func) free_current_contents, &expr); |
bd5635a1 RP |
971 | evaluate_expression (expr); |
972 | do_cleanups (old_chain); | |
973 | } | |
974 | ||
d14573e3 AC |
975 | /* ARGSUSED */ |
976 | static void | |
977 | sym_info (arg, from_tty) | |
978 | char *arg; | |
979 | int from_tty; | |
980 | { | |
981 | struct minimal_symbol *msymbol; | |
982 | struct objfile *objfile; | |
983 | struct obj_section *osect; | |
984 | asection *sect; | |
985 | CORE_ADDR addr, sect_addr; | |
986 | int matches = 0; | |
987 | unsigned int offset; | |
988 | ||
989 | if (!arg) | |
990 | error_no_arg ("address"); | |
991 | ||
992 | addr = parse_and_eval_address (arg); | |
993 | ALL_OBJSECTIONS (objfile, osect) | |
994 | { | |
995 | sect = osect->the_bfd_section; | |
996 | sect_addr = overlay_mapped_address (addr, sect); | |
997 | ||
998 | if (osect->addr <= sect_addr && sect_addr < osect->endaddr && | |
999 | (msymbol = lookup_minimal_symbol_by_pc_section (sect_addr, sect))) | |
1000 | { | |
1001 | matches = 1; | |
1002 | offset = sect_addr - SYMBOL_VALUE_ADDRESS (msymbol); | |
1003 | if (offset) | |
1004 | printf_filtered ("%s + %u in ", | |
1005 | SYMBOL_SOURCE_NAME (msymbol), offset); | |
1006 | else | |
1007 | printf_filtered ("%s in ", | |
1008 | SYMBOL_SOURCE_NAME (msymbol)); | |
1009 | if (pc_in_unmapped_range (addr, sect)) | |
1010 | printf_filtered ("load address range of "); | |
1011 | if (section_is_overlay (sect)) | |
1012 | printf_filtered ("%s overlay ", | |
1013 | section_is_mapped (sect) ? "mapped" : "unmapped"); | |
1014 | printf_filtered ("section %s", sect->name); | |
1015 | printf_filtered ("\n"); | |
1016 | } | |
1017 | } | |
1018 | if (matches == 0) | |
1019 | printf_filtered ("No symbol matches %s.\n", arg); | |
1020 | } | |
1021 | ||
e1ce8aa5 | 1022 | /* ARGSUSED */ |
bd5635a1 RP |
1023 | static void |
1024 | address_info (exp, from_tty) | |
1025 | char *exp; | |
1026 | int from_tty; | |
1027 | { | |
1028 | register struct symbol *sym; | |
93fe4e33 | 1029 | register struct minimal_symbol *msymbol; |
e1ce8aa5 | 1030 | register long val; |
4d38b5a8 | 1031 | register long basereg; |
d14573e3 AC |
1032 | asection *section; |
1033 | CORE_ADDR load_addr; | |
bd5635a1 RP |
1034 | int is_a_field_of_this; /* C++: lookup_symbol sets this to nonzero |
1035 | if exp is a field of `this'. */ | |
1036 | ||
1037 | if (exp == 0) | |
1038 | error ("Argument required."); | |
1039 | ||
1040 | sym = lookup_symbol (exp, get_selected_block (), VAR_NAMESPACE, | |
1041 | &is_a_field_of_this, (struct symtab **)NULL); | |
2e4964ad | 1042 | if (sym == NULL) |
bd5635a1 | 1043 | { |
bd5635a1 RP |
1044 | if (is_a_field_of_this) |
1045 | { | |
ca603cff | 1046 | printf_filtered ("Symbol \""); |
91f87016 JL |
1047 | fprintf_symbol_filtered (gdb_stdout, exp, |
1048 | current_language->la_language, DMGL_ANSI); | |
ca603cff | 1049 | printf_filtered ("\" is a field of the local class variable `this'\n"); |
bd5635a1 RP |
1050 | return; |
1051 | } | |
1052 | ||
85c613aa | 1053 | msymbol = lookup_minimal_symbol (exp, NULL, NULL); |
bd5635a1 | 1054 | |
93fe4e33 | 1055 | if (msymbol != NULL) |
91f87016 | 1056 | { |
d14573e3 AC |
1057 | load_addr = SYMBOL_VALUE_ADDRESS (msymbol); |
1058 | ||
ca603cff | 1059 | printf_filtered ("Symbol \""); |
91f87016 JL |
1060 | fprintf_symbol_filtered (gdb_stdout, exp, |
1061 | current_language->la_language, DMGL_ANSI); | |
833e0d94 | 1062 | printf_filtered ("\" is at "); |
d14573e3 AC |
1063 | print_address_numeric (load_addr, 1, gdb_stdout); |
1064 | printf_filtered (" in a file compiled without debugging"); | |
1065 | section = SYMBOL_BFD_SECTION (msymbol); | |
1066 | if (section_is_overlay (section)) | |
1067 | { | |
1068 | load_addr = overlay_unmapped_address (load_addr, section); | |
1069 | printf_filtered (",\n -- loaded at "); | |
1070 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1071 | printf_filtered (" in overlay section %s", section->name); | |
1072 | } | |
1073 | printf_filtered (".\n"); | |
91f87016 | 1074 | } |
bd5635a1 RP |
1075 | else |
1076 | error ("No symbol \"%s\" in current context.", exp); | |
1077 | return; | |
1078 | } | |
1079 | ||
ca603cff | 1080 | printf_filtered ("Symbol \""); |
91f87016 JL |
1081 | fprintf_symbol_filtered (gdb_stdout, SYMBOL_NAME (sym), |
1082 | current_language->la_language, DMGL_ANSI); | |
2b576293 | 1083 | printf_filtered ("\" is "); |
d14573e3 | 1084 | val = SYMBOL_VALUE (sym); |
4d38b5a8 | 1085 | basereg = SYMBOL_BASEREG (sym); |
d14573e3 | 1086 | section = SYMBOL_BFD_SECTION (sym); |
bd5635a1 RP |
1087 | |
1088 | switch (SYMBOL_CLASS (sym)) | |
1089 | { | |
1090 | case LOC_CONST: | |
1091 | case LOC_CONST_BYTES: | |
ca603cff | 1092 | printf_filtered ("constant"); |
bd5635a1 RP |
1093 | break; |
1094 | ||
1095 | case LOC_LABEL: | |
833e0d94 | 1096 | printf_filtered ("a label at address "); |
d14573e3 AC |
1097 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym), |
1098 | 1, gdb_stdout); | |
1099 | if (section_is_overlay (section)) | |
1100 | { | |
1101 | load_addr = overlay_unmapped_address (load_addr, section); | |
1102 | printf_filtered (",\n -- loaded at "); | |
1103 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1104 | printf_filtered (" in overlay section %s", section->name); | |
1105 | } | |
bd5635a1 RP |
1106 | break; |
1107 | ||
1108 | case LOC_REGISTER: | |
ca603cff | 1109 | printf_filtered ("a variable in register %s", reg_names[val]); |
bd5635a1 RP |
1110 | break; |
1111 | ||
1112 | case LOC_STATIC: | |
833e0d94 | 1113 | printf_filtered ("static storage at address "); |
d14573e3 AC |
1114 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym), |
1115 | 1, gdb_stdout); | |
1116 | if (section_is_overlay (section)) | |
1117 | { | |
1118 | load_addr = overlay_unmapped_address (load_addr, section); | |
1119 | printf_filtered (",\n -- loaded at "); | |
1120 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1121 | printf_filtered (" in overlay section %s", section->name); | |
1122 | } | |
bd5635a1 RP |
1123 | break; |
1124 | ||
1125 | case LOC_REGPARM: | |
ca603cff | 1126 | printf_filtered ("an argument in register %s", reg_names[val]); |
bd5635a1 | 1127 | break; |
5afa2040 | 1128 | |
a1c8d76e | 1129 | case LOC_REGPARM_ADDR: |
ca603cff | 1130 | printf_filtered ("address of an argument in register %s", reg_names[val]); |
a1c8d76e JK |
1131 | break; |
1132 | ||
bd5635a1 | 1133 | case LOC_ARG: |
ca603cff | 1134 | printf_filtered ("an argument at offset %ld", val); |
bd5635a1 RP |
1135 | break; |
1136 | ||
1137 | case LOC_LOCAL_ARG: | |
ca603cff | 1138 | printf_filtered ("an argument at frame offset %ld", val); |
bd5635a1 RP |
1139 | break; |
1140 | ||
1141 | case LOC_LOCAL: | |
ca603cff | 1142 | printf_filtered ("a local variable at frame offset %ld", val); |
bd5635a1 RP |
1143 | break; |
1144 | ||
1145 | case LOC_REF_ARG: | |
ca603cff | 1146 | printf_filtered ("a reference argument at offset %ld", val); |
bd5635a1 RP |
1147 | break; |
1148 | ||
a1c8d76e | 1149 | case LOC_BASEREG: |
ca603cff | 1150 | printf_filtered ("a variable at offset %ld from register %s", |
a1c8d76e JK |
1151 | val, reg_names[basereg]); |
1152 | break; | |
1153 | ||
1154 | case LOC_BASEREG_ARG: | |
ca603cff | 1155 | printf_filtered ("an argument at offset %ld from register %s", |
a1c8d76e JK |
1156 | val, reg_names[basereg]); |
1157 | break; | |
1158 | ||
bd5635a1 | 1159 | case LOC_TYPEDEF: |
ca603cff | 1160 | printf_filtered ("a typedef"); |
bd5635a1 RP |
1161 | break; |
1162 | ||
1163 | case LOC_BLOCK: | |
833e0d94 | 1164 | printf_filtered ("a function at address "); |
d14573e3 AC |
1165 | #ifdef GDB_TARGET_MASK_DISAS_PC |
1166 | print_address_numeric | |
1167 | (load_addr= GDB_TARGET_MASK_DISAS_PC (BLOCK_START (SYMBOL_BLOCK_VALUE (sym))), | |
1168 | 1, gdb_stdout); | |
1169 | #else | |
1170 | print_address_numeric (load_addr=BLOCK_START (SYMBOL_BLOCK_VALUE (sym)), | |
1171 | 1, gdb_stdout); | |
1172 | #endif | |
1173 | if (section_is_overlay (section)) | |
1174 | { | |
1175 | load_addr = overlay_unmapped_address (load_addr, section); | |
1176 | printf_filtered (",\n -- loaded at "); | |
1177 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1178 | printf_filtered (" in overlay section %s", section->name); | |
1179 | } | |
bd5635a1 RP |
1180 | break; |
1181 | ||
91550191 SG |
1182 | case LOC_UNRESOLVED: |
1183 | { | |
1184 | struct minimal_symbol *msym; | |
1185 | ||
1186 | msym = lookup_minimal_symbol (SYMBOL_NAME (sym), NULL, NULL); | |
1187 | if (msym == NULL) | |
1188 | printf_filtered ("unresolved"); | |
1189 | else | |
1190 | { | |
d14573e3 | 1191 | section = SYMBOL_BFD_SECTION (msym); |
91550191 | 1192 | printf_filtered ("static storage at address "); |
d14573e3 AC |
1193 | print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (msym), |
1194 | 1, gdb_stdout); | |
1195 | if (section_is_overlay (section)) | |
1196 | { | |
1197 | load_addr = overlay_unmapped_address (load_addr, section); | |
1198 | printf_filtered (",\n -- loaded at "); | |
1199 | print_address_numeric (load_addr, 1, gdb_stdout); | |
1200 | printf_filtered (" in overlay section %s", section->name); | |
1201 | } | |
91550191 SG |
1202 | } |
1203 | } | |
1204 | break; | |
1205 | ||
31258e4f JK |
1206 | case LOC_OPTIMIZED_OUT: |
1207 | printf_filtered ("optimized out"); | |
1208 | break; | |
1209 | ||
bd5635a1 | 1210 | default: |
ca603cff | 1211 | printf_filtered ("of unknown (botched) type"); |
bd5635a1 RP |
1212 | break; |
1213 | } | |
ca603cff | 1214 | printf_filtered (".\n"); |
bd5635a1 RP |
1215 | } |
1216 | \f | |
d6b6757b | 1217 | void |
bd5635a1 RP |
1218 | x_command (exp, from_tty) |
1219 | char *exp; | |
1220 | int from_tty; | |
1221 | { | |
1222 | struct expression *expr; | |
1223 | struct format_data fmt; | |
1224 | struct cleanup *old_chain; | |
1225 | struct value *val; | |
1226 | ||
1227 | fmt.format = last_format; | |
1228 | fmt.size = last_size; | |
1229 | fmt.count = 1; | |
1230 | ||
1231 | if (exp && *exp == '/') | |
1232 | { | |
1233 | exp++; | |
1234 | fmt = decode_format (&exp, last_format, last_size); | |
bd5635a1 RP |
1235 | } |
1236 | ||
1237 | /* If we have an expression, evaluate it and use it as the address. */ | |
1238 | ||
1239 | if (exp != 0 && *exp != 0) | |
1240 | { | |
c4668207 | 1241 | expr = parse_expression (exp); |
bd5635a1 RP |
1242 | /* Cause expression not to be there any more |
1243 | if this command is repeated with Newline. | |
1244 | But don't clobber a user-defined command's definition. */ | |
1245 | if (from_tty) | |
1246 | *exp = 0; | |
ad3b8c4a JM |
1247 | old_chain = make_cleanup ((make_cleanup_func) free_current_contents, |
1248 | &expr); | |
bd5635a1 | 1249 | val = evaluate_expression (expr); |
3577f9b4 JK |
1250 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_REF) |
1251 | val = value_ind (val); | |
bd5635a1 RP |
1252 | /* In rvalue contexts, such as this, functions are coerced into |
1253 | pointers to functions. This makes "x/i main" work. */ | |
1254 | if (/* last_format == 'i' | |
1255 | && */ TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_FUNC | |
1256 | && VALUE_LVAL (val) == lval_memory) | |
1257 | next_address = VALUE_ADDRESS (val); | |
1258 | else | |
e1ce8aa5 | 1259 | next_address = value_as_pointer (val); |
d14573e3 AC |
1260 | if (VALUE_BFD_SECTION (val)) |
1261 | next_section = VALUE_BFD_SECTION (val); | |
bd5635a1 RP |
1262 | do_cleanups (old_chain); |
1263 | } | |
1264 | ||
d14573e3 | 1265 | do_examine (fmt, next_address, next_section); |
bd5635a1 | 1266 | |
4d38b5a8 JG |
1267 | /* If the examine succeeds, we remember its size and format for next time. */ |
1268 | last_size = fmt.size; | |
1269 | last_format = fmt.format; | |
1270 | ||
bd5635a1 RP |
1271 | /* Set a couple of internal variables if appropriate. */ |
1272 | if (last_examine_value) | |
1273 | { | |
c4668207 JG |
1274 | /* Make last address examined available to the user as $_. Use |
1275 | the correct pointer type. */ | |
bd5635a1 | 1276 | set_internalvar (lookup_internalvar ("_"), |
c4668207 JG |
1277 | value_from_longest ( |
1278 | lookup_pointer_type (VALUE_TYPE (last_examine_value)), | |
1279 | (LONGEST) last_examine_address)); | |
bd5635a1 RP |
1280 | |
1281 | /* Make contents of last address examined available to the user as $__.*/ | |
242c0d81 SG |
1282 | /* If the last value has not been fetched from memory then don't |
1283 | fetch it now - instead mark it by voiding the $__ variable. */ | |
1284 | if (VALUE_LAZY (last_examine_value)) | |
1285 | set_internalvar (lookup_internalvar ("__"), | |
1286 | allocate_value (builtin_type_void)); | |
1287 | else | |
1288 | set_internalvar (lookup_internalvar ("__"), last_examine_value); | |
bd5635a1 RP |
1289 | } |
1290 | } | |
bd5635a1 | 1291 | |
bd5635a1 | 1292 | \f |
bd5635a1 RP |
1293 | /* Add an expression to the auto-display chain. |
1294 | Specify the expression. */ | |
1295 | ||
1296 | static void | |
1297 | display_command (exp, from_tty) | |
1298 | char *exp; | |
1299 | int from_tty; | |
1300 | { | |
1301 | struct format_data fmt; | |
1302 | register struct expression *expr; | |
1303 | register struct display *new; | |
1304 | ||
1305 | if (exp == 0) | |
1306 | { | |
1307 | do_displays (); | |
1308 | return; | |
1309 | } | |
1310 | ||
1311 | if (*exp == '/') | |
1312 | { | |
1313 | exp++; | |
1314 | fmt = decode_format (&exp, 0, 0); | |
1315 | if (fmt.size && fmt.format == 0) | |
1316 | fmt.format = 'x'; | |
1317 | if (fmt.format == 'i' || fmt.format == 's') | |
1318 | fmt.size = 'b'; | |
1319 | } | |
1320 | else | |
1321 | { | |
1322 | fmt.format = 0; | |
1323 | fmt.size = 0; | |
1324 | fmt.count = 0; | |
1325 | } | |
1326 | ||
1327 | innermost_block = 0; | |
c4668207 | 1328 | expr = parse_expression (exp); |
bd5635a1 RP |
1329 | |
1330 | new = (struct display *) xmalloc (sizeof (struct display)); | |
1331 | ||
1332 | new->exp = expr; | |
1333 | new->block = innermost_block; | |
1334 | new->next = display_chain; | |
1335 | new->number = ++display_number; | |
1336 | new->format = fmt; | |
1337 | new->status = enabled; | |
1338 | display_chain = new; | |
1339 | ||
1340 | if (from_tty && target_has_execution) | |
1341 | do_one_display (new); | |
1342 | ||
1343 | dont_repeat (); | |
1344 | } | |
1345 | ||
1346 | static void | |
1347 | free_display (d) | |
1348 | struct display *d; | |
1349 | { | |
4d38b5a8 JG |
1350 | free ((PTR)d->exp); |
1351 | free ((PTR)d); | |
bd5635a1 RP |
1352 | } |
1353 | ||
1354 | /* Clear out the display_chain. | |
1355 | Done when new symtabs are loaded, since this invalidates | |
1356 | the types stored in many expressions. */ | |
1357 | ||
1358 | void | |
1359 | clear_displays () | |
1360 | { | |
1361 | register struct display *d; | |
1362 | ||
a8a69e63 | 1363 | while ((d = display_chain) != NULL) |
bd5635a1 | 1364 | { |
4d38b5a8 | 1365 | free ((PTR)d->exp); |
bd5635a1 | 1366 | display_chain = d->next; |
4d38b5a8 | 1367 | free ((PTR)d); |
bd5635a1 RP |
1368 | } |
1369 | } | |
1370 | ||
1371 | /* Delete the auto-display number NUM. */ | |
1372 | ||
93fe4e33 | 1373 | static void |
bd5635a1 RP |
1374 | delete_display (num) |
1375 | int num; | |
1376 | { | |
1377 | register struct display *d1, *d; | |
1378 | ||
1379 | if (!display_chain) | |
1380 | error ("No display number %d.", num); | |
1381 | ||
1382 | if (display_chain->number == num) | |
1383 | { | |
1384 | d1 = display_chain; | |
1385 | display_chain = d1->next; | |
1386 | free_display (d1); | |
1387 | } | |
1388 | else | |
1389 | for (d = display_chain; ; d = d->next) | |
1390 | { | |
1391 | if (d->next == 0) | |
1392 | error ("No display number %d.", num); | |
1393 | if (d->next->number == num) | |
1394 | { | |
1395 | d1 = d->next; | |
1396 | d->next = d1->next; | |
1397 | free_display (d1); | |
1398 | break; | |
1399 | } | |
1400 | } | |
1401 | } | |
1402 | ||
1403 | /* Delete some values from the auto-display chain. | |
1404 | Specify the element numbers. */ | |
1405 | ||
1406 | static void | |
4d38b5a8 | 1407 | undisplay_command (args, from_tty) |
bd5635a1 | 1408 | char *args; |
4d38b5a8 | 1409 | int from_tty; |
bd5635a1 RP |
1410 | { |
1411 | register char *p = args; | |
1412 | register char *p1; | |
1413 | register int num; | |
1414 | ||
1415 | if (args == 0) | |
1416 | { | |
1417 | if (query ("Delete all auto-display expressions? ")) | |
1418 | clear_displays (); | |
1419 | dont_repeat (); | |
1420 | return; | |
1421 | } | |
1422 | ||
1423 | while (*p) | |
1424 | { | |
1425 | p1 = p; | |
1426 | while (*p1 >= '0' && *p1 <= '9') p1++; | |
1427 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
1428 | error ("Arguments must be display numbers."); | |
1429 | ||
1430 | num = atoi (p); | |
1431 | ||
1432 | delete_display (num); | |
1433 | ||
1434 | p = p1; | |
1435 | while (*p == ' ' || *p == '\t') p++; | |
1436 | } | |
1437 | dont_repeat (); | |
1438 | } | |
1439 | ||
1440 | /* Display a single auto-display. | |
1441 | Do nothing if the display cannot be printed in the current context, | |
1442 | or if the display is disabled. */ | |
1443 | ||
1444 | static void | |
1445 | do_one_display (d) | |
1446 | struct display *d; | |
1447 | { | |
1448 | int within_current_scope; | |
1449 | ||
1450 | if (d->status == disabled) | |
1451 | return; | |
1452 | ||
1453 | if (d->block) | |
1454 | within_current_scope = contained_in (get_selected_block (), d->block); | |
1455 | else | |
1456 | within_current_scope = 1; | |
1457 | if (!within_current_scope) | |
1458 | return; | |
1459 | ||
1460 | current_display_number = d->number; | |
1461 | ||
1c95d7ab JK |
1462 | annotate_display_begin (); |
1463 | printf_filtered ("%d", d->number); | |
1464 | annotate_display_number_end (); | |
1465 | printf_filtered (": "); | |
bd5635a1 RP |
1466 | if (d->format.size) |
1467 | { | |
1468 | CORE_ADDR addr; | |
d14573e3 | 1469 | value_ptr val; |
1c95d7ab JK |
1470 | |
1471 | annotate_display_format (); | |
1472 | ||
bd5635a1 RP |
1473 | printf_filtered ("x/"); |
1474 | if (d->format.count != 1) | |
1475 | printf_filtered ("%d", d->format.count); | |
1476 | printf_filtered ("%c", d->format.format); | |
1477 | if (d->format.format != 'i' && d->format.format != 's') | |
1478 | printf_filtered ("%c", d->format.size); | |
1479 | printf_filtered (" "); | |
1c95d7ab JK |
1480 | |
1481 | annotate_display_expression (); | |
1482 | ||
199b2450 | 1483 | print_expression (d->exp, gdb_stdout); |
1c95d7ab JK |
1484 | annotate_display_expression_end (); |
1485 | ||
bd5635a1 RP |
1486 | if (d->format.count != 1) |
1487 | printf_filtered ("\n"); | |
1488 | else | |
1489 | printf_filtered (" "); | |
1490 | ||
d14573e3 AC |
1491 | val = evaluate_expression (d->exp); |
1492 | addr = value_as_pointer (val); | |
bd5635a1 RP |
1493 | if (d->format.format == 'i') |
1494 | addr = ADDR_BITS_REMOVE (addr); | |
1c95d7ab JK |
1495 | |
1496 | annotate_display_value (); | |
1497 | ||
d14573e3 | 1498 | do_examine (d->format, addr, VALUE_BFD_SECTION (val)); |
bd5635a1 RP |
1499 | } |
1500 | else | |
1501 | { | |
1c95d7ab JK |
1502 | annotate_display_format (); |
1503 | ||
bd5635a1 RP |
1504 | if (d->format.format) |
1505 | printf_filtered ("/%c ", d->format.format); | |
1c95d7ab JK |
1506 | |
1507 | annotate_display_expression (); | |
1508 | ||
199b2450 | 1509 | print_expression (d->exp, gdb_stdout); |
1c95d7ab JK |
1510 | annotate_display_expression_end (); |
1511 | ||
bd5635a1 | 1512 | printf_filtered (" = "); |
1c95d7ab JK |
1513 | |
1514 | annotate_display_expression (); | |
1515 | ||
bd5635a1 RP |
1516 | print_formatted (evaluate_expression (d->exp), |
1517 | d->format.format, d->format.size); | |
1518 | printf_filtered ("\n"); | |
1519 | } | |
1520 | ||
1c95d7ab JK |
1521 | annotate_display_end (); |
1522 | ||
199b2450 | 1523 | gdb_flush (gdb_stdout); |
bd5635a1 RP |
1524 | current_display_number = -1; |
1525 | } | |
1526 | ||
1527 | /* Display all of the values on the auto-display chain which can be | |
1528 | evaluated in the current scope. */ | |
1529 | ||
1530 | void | |
1531 | do_displays () | |
1532 | { | |
1533 | register struct display *d; | |
1534 | ||
1535 | for (d = display_chain; d; d = d->next) | |
1536 | do_one_display (d); | |
1537 | } | |
1538 | ||
1539 | /* Delete the auto-display which we were in the process of displaying. | |
1540 | This is done when there is an error or a signal. */ | |
1541 | ||
1542 | void | |
1543 | disable_display (num) | |
1544 | int num; | |
1545 | { | |
1546 | register struct display *d; | |
1547 | ||
1548 | for (d = display_chain; d; d = d->next) | |
1549 | if (d->number == num) | |
1550 | { | |
1551 | d->status = disabled; | |
1552 | return; | |
1553 | } | |
199b2450 | 1554 | printf_unfiltered ("No display number %d.\n", num); |
bd5635a1 RP |
1555 | } |
1556 | ||
1557 | void | |
1558 | disable_current_display () | |
1559 | { | |
1560 | if (current_display_number >= 0) | |
1561 | { | |
1562 | disable_display (current_display_number); | |
199b2450 | 1563 | fprintf_unfiltered (gdb_stderr, "Disabling display %d to avoid infinite recursion.\n", |
bd5635a1 RP |
1564 | current_display_number); |
1565 | } | |
1566 | current_display_number = -1; | |
1567 | } | |
1568 | ||
1569 | static void | |
4d38b5a8 JG |
1570 | display_info (ignore, from_tty) |
1571 | char *ignore; | |
1572 | int from_tty; | |
bd5635a1 RP |
1573 | { |
1574 | register struct display *d; | |
1575 | ||
1576 | if (!display_chain) | |
199b2450 | 1577 | printf_unfiltered ("There are no auto-display expressions now.\n"); |
bd5635a1 RP |
1578 | else |
1579 | printf_filtered ("Auto-display expressions now in effect:\n\ | |
1580 | Num Enb Expression\n"); | |
1581 | ||
1582 | for (d = display_chain; d; d = d->next) | |
1583 | { | |
1584 | printf_filtered ("%d: %c ", d->number, "ny"[(int)d->status]); | |
1585 | if (d->format.size) | |
1586 | printf_filtered ("/%d%c%c ", d->format.count, d->format.size, | |
1587 | d->format.format); | |
1588 | else if (d->format.format) | |
1589 | printf_filtered ("/%c ", d->format.format); | |
199b2450 | 1590 | print_expression (d->exp, gdb_stdout); |
bd5635a1 RP |
1591 | if (d->block && !contained_in (get_selected_block (), d->block)) |
1592 | printf_filtered (" (cannot be evaluated in the current context)"); | |
1593 | printf_filtered ("\n"); | |
199b2450 | 1594 | gdb_flush (gdb_stdout); |
bd5635a1 RP |
1595 | } |
1596 | } | |
1597 | ||
93fe4e33 | 1598 | static void |
4d38b5a8 | 1599 | enable_display (args, from_tty) |
bd5635a1 | 1600 | char *args; |
4d38b5a8 | 1601 | int from_tty; |
bd5635a1 RP |
1602 | { |
1603 | register char *p = args; | |
1604 | register char *p1; | |
1605 | register int num; | |
1606 | register struct display *d; | |
1607 | ||
1608 | if (p == 0) | |
1609 | { | |
1610 | for (d = display_chain; d; d = d->next) | |
1611 | d->status = enabled; | |
1612 | } | |
1613 | else | |
1614 | while (*p) | |
1615 | { | |
1616 | p1 = p; | |
1617 | while (*p1 >= '0' && *p1 <= '9') | |
1618 | p1++; | |
1619 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
1620 | error ("Arguments must be display numbers."); | |
1621 | ||
1622 | num = atoi (p); | |
1623 | ||
1624 | for (d = display_chain; d; d = d->next) | |
1625 | if (d->number == num) | |
1626 | { | |
1627 | d->status = enabled; | |
1628 | goto win; | |
1629 | } | |
199b2450 | 1630 | printf_unfiltered ("No display number %d.\n", num); |
bd5635a1 RP |
1631 | win: |
1632 | p = p1; | |
1633 | while (*p == ' ' || *p == '\t') | |
1634 | p++; | |
1635 | } | |
1636 | } | |
1637 | ||
e1ce8aa5 | 1638 | /* ARGSUSED */ |
93fe4e33 | 1639 | static void |
bd5635a1 RP |
1640 | disable_display_command (args, from_tty) |
1641 | char *args; | |
1642 | int from_tty; | |
1643 | { | |
1644 | register char *p = args; | |
1645 | register char *p1; | |
1646 | register struct display *d; | |
1647 | ||
1648 | if (p == 0) | |
1649 | { | |
1650 | for (d = display_chain; d; d = d->next) | |
1651 | d->status = disabled; | |
1652 | } | |
1653 | else | |
1654 | while (*p) | |
1655 | { | |
1656 | p1 = p; | |
1657 | while (*p1 >= '0' && *p1 <= '9') | |
1658 | p1++; | |
1659 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
1660 | error ("Arguments must be display numbers."); | |
1661 | ||
1662 | disable_display (atoi (p)); | |
1663 | ||
1664 | p = p1; | |
1665 | while (*p == ' ' || *p == '\t') | |
1666 | p++; | |
1667 | } | |
1668 | } | |
1669 | ||
1670 | \f | |
1671 | /* Print the value in stack frame FRAME of a variable | |
1672 | specified by a struct symbol. */ | |
1673 | ||
1674 | void | |
1675 | print_variable_value (var, frame, stream) | |
1676 | struct symbol *var; | |
a76ef70a | 1677 | struct frame_info *frame; |
199b2450 | 1678 | GDB_FILE *stream; |
bd5635a1 | 1679 | { |
82a2edfb | 1680 | value_ptr val = read_var_value (var, frame); |
a76ef70a | 1681 | |
bd5635a1 RP |
1682 | value_print (val, stream, 0, Val_pretty_default); |
1683 | } | |
1684 | ||
1685 | /* Print the arguments of a stack frame, given the function FUNC | |
1686 | running in that frame (as a symbol), the info on the frame, | |
1687 | and the number of args according to the stack frame (or -1 if unknown). */ | |
1688 | ||
1689 | /* References here and elsewhere to "number of args according to the | |
1690 | stack frame" appear in all cases to refer to "number of ints of args | |
1691 | according to the stack frame". At least for VAX, i386, isi. */ | |
1692 | ||
1693 | void | |
1694 | print_frame_args (func, fi, num, stream) | |
1695 | struct symbol *func; | |
1696 | struct frame_info *fi; | |
1697 | int num; | |
199b2450 | 1698 | GDB_FILE *stream; |
bd5635a1 | 1699 | { |
f73b07c9 | 1700 | struct block *b = NULL; |
bd5635a1 RP |
1701 | int nsyms = 0; |
1702 | int first = 1; | |
1703 | register int i; | |
1704 | register struct symbol *sym; | |
82a2edfb | 1705 | register value_ptr val; |
bd5635a1 RP |
1706 | /* Offset of next stack argument beyond the one we have seen that is |
1707 | at the highest offset. | |
1708 | -1 if we haven't come to a stack argument yet. */ | |
e1ce8aa5 | 1709 | long highest_offset = -1; |
bd5635a1 RP |
1710 | int arg_size; |
1711 | /* Number of ints of arguments that we have printed so far. */ | |
1712 | int args_printed = 0; | |
1713 | ||
1714 | if (func) | |
1715 | { | |
1716 | b = SYMBOL_BLOCK_VALUE (func); | |
1717 | nsyms = BLOCK_NSYMS (b); | |
1718 | } | |
1719 | ||
1720 | for (i = 0; i < nsyms; i++) | |
1721 | { | |
1722 | QUIT; | |
1723 | sym = BLOCK_SYM (b, i); | |
1724 | ||
c4668207 JG |
1725 | /* Keep track of the highest stack argument offset seen, and |
1726 | skip over any kinds of symbols we don't care about. */ | |
bd5635a1 RP |
1727 | |
1728 | switch (SYMBOL_CLASS (sym)) { | |
bd5635a1 RP |
1729 | case LOC_ARG: |
1730 | case LOC_REF_ARG: | |
1731 | { | |
e1ce8aa5 | 1732 | long current_offset = SYMBOL_VALUE (sym); |
bd5635a1 RP |
1733 | arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); |
1734 | ||
1735 | /* Compute address of next argument by adding the size of | |
1736 | this argument and rounding to an int boundary. */ | |
1737 | current_offset | |
1738 | = ((current_offset + arg_size + sizeof (int) - 1) | |
1739 | & ~(sizeof (int) - 1)); | |
1740 | ||
1741 | /* If this is the highest offset seen yet, set highest_offset. */ | |
1742 | if (highest_offset == -1 | |
1743 | || (current_offset > highest_offset)) | |
1744 | highest_offset = current_offset; | |
1745 | ||
1746 | /* Add the number of ints we're about to print to args_printed. */ | |
1747 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); | |
1748 | } | |
1749 | ||
c4668207 JG |
1750 | /* We care about types of symbols, but don't need to keep track of |
1751 | stack offsets in them. */ | |
1752 | case LOC_REGPARM: | |
5afa2040 | 1753 | case LOC_REGPARM_ADDR: |
c4668207 | 1754 | case LOC_LOCAL_ARG: |
a1c8d76e | 1755 | case LOC_BASEREG_ARG: |
bd5635a1 | 1756 | break; |
c4668207 JG |
1757 | |
1758 | /* Other types of symbols we just skip over. */ | |
1759 | default: | |
1760 | continue; | |
bd5635a1 RP |
1761 | } |
1762 | ||
31258e4f JK |
1763 | /* We have to look up the symbol because arguments can have |
1764 | two entries (one a parameter, one a local) and the one we | |
1765 | want is the local, which lookup_symbol will find for us. | |
1766 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1767 | small structure and gcc2 when the argument type is float | |
1768 | and it is passed as a double and converted to float by | |
1769 | the prologue (in the latter case the type of the LOC_ARG | |
1770 | symbol is double and the type of the LOC_LOCAL symbol is | |
314e6bf3 | 1771 | float). */ |
31258e4f | 1772 | /* But if the parameter name is null, don't try it. |
a8a69e63 FF |
1773 | Null parameter names occur on the RS/6000, for traceback tables. |
1774 | FIXME, should we even print them? */ | |
1775 | ||
1776 | if (*SYMBOL_NAME (sym)) | |
314e6bf3 JG |
1777 | { |
1778 | struct symbol *nsym; | |
1779 | nsym = lookup_symbol | |
1780 | (SYMBOL_NAME (sym), | |
1781 | b, VAR_NAMESPACE, (int *)NULL, (struct symtab **)NULL); | |
1782 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER) | |
1783 | { | |
1784 | /* There is a LOC_ARG/LOC_REGISTER pair. This means that | |
1785 | it was passed on the stack and loaded into a register, | |
1786 | or passed in a register and stored in a stack slot. | |
1787 | GDB 3.x used the LOC_ARG; GDB 4.0-4.11 used the LOC_REGISTER. | |
1788 | ||
1789 | Reasons for using the LOC_ARG: | |
1790 | (1) because find_saved_registers may be slow for remote | |
1791 | debugging, | |
1792 | (2) because registers are often re-used and stack slots | |
1793 | rarely (never?) are. Therefore using the stack slot is | |
1794 | much less likely to print garbage. | |
1795 | ||
1796 | Reasons why we might want to use the LOC_REGISTER: | |
1797 | (1) So that the backtrace prints the same value as | |
1798 | "print foo". I see no compelling reason why this needs | |
1799 | to be the case; having the backtrace print the value which | |
1800 | was passed in, and "print foo" print the value as modified | |
1801 | within the called function, makes perfect sense to me. | |
1802 | ||
1803 | Additional note: It might be nice if "info args" displayed | |
1804 | both values. | |
c0c9b923 | 1805 | One more note: There is a case with sparc structure passing |
314e6bf3 JG |
1806 | where we need to use the LOC_REGISTER, but this is dealt with |
1807 | by creating a single LOC_REGPARM in symbol reading. */ | |
1808 | ||
1809 | /* Leave sym (the LOC_ARG) alone. */ | |
1810 | ; | |
1811 | } | |
1812 | else | |
1813 | sym = nsym; | |
1814 | } | |
c4668207 | 1815 | |
bd5635a1 RP |
1816 | /* Print the current arg. */ |
1817 | if (! first) | |
1818 | fprintf_filtered (stream, ", "); | |
1819 | wrap_here (" "); | |
96f7edbd | 1820 | |
1c95d7ab | 1821 | annotate_arg_begin (); |
c0c9b923 | 1822 | |
31258e4f JK |
1823 | fprintf_symbol_filtered (stream, SYMBOL_SOURCE_NAME (sym), |
1824 | SYMBOL_LANGUAGE (sym), DMGL_PARAMS | DMGL_ANSI); | |
1c95d7ab | 1825 | annotate_arg_name_end (); |
bd5635a1 RP |
1826 | fputs_filtered ("=", stream); |
1827 | ||
1828 | /* Avoid value_print because it will deref ref parameters. We just | |
1829 | want to print their addresses. Print ??? for args whose address | |
d11c44f1 JG |
1830 | we do not know. We pass 2 as "recurse" to val_print because our |
1831 | standard indentation here is 4 spaces, and val_print indents | |
1832 | 2 for each recurse. */ | |
a76ef70a | 1833 | val = read_var_value (sym, fi); |
96f7edbd | 1834 | |
1c95d7ab | 1835 | annotate_arg_value (val == NULL ? NULL : VALUE_TYPE (val)); |
96f7edbd | 1836 | |
bd5635a1 | 1837 | if (val) |
d6b6757b MS |
1838 | { |
1839 | #ifdef GDB_TARGET_IS_D10V | |
1840 | if (SYMBOL_CLASS(sym) == LOC_REGPARM && TYPE_CODE(VALUE_TYPE(val)) == TYPE_CODE_PTR) | |
1841 | TYPE_LENGTH(VALUE_TYPE(val)) = 2; | |
1842 | #endif | |
bd5635a1 | 1843 | val_print (VALUE_TYPE (val), VALUE_CONTENTS (val), VALUE_ADDRESS (val), |
d11c44f1 | 1844 | stream, 0, 0, 2, Val_no_prettyprint); |
d6b6757b | 1845 | } |
bd5635a1 RP |
1846 | else |
1847 | fputs_filtered ("???", stream); | |
96f7edbd | 1848 | |
1c95d7ab | 1849 | annotate_arg_end (); |
96f7edbd | 1850 | |
bd5635a1 RP |
1851 | first = 0; |
1852 | } | |
1853 | ||
1854 | /* Don't print nameless args in situations where we don't know | |
1855 | enough about the stack to find them. */ | |
1856 | if (num != -1) | |
1857 | { | |
e1ce8aa5 | 1858 | long start; |
bd5635a1 RP |
1859 | |
1860 | if (highest_offset == -1) | |
1861 | start = FRAME_ARGS_SKIP; | |
1862 | else | |
1863 | start = highest_offset; | |
1864 | ||
7dc15bb7 JG |
1865 | print_frame_nameless_args (fi, start, num - args_printed, |
1866 | first, stream); | |
bd5635a1 RP |
1867 | } |
1868 | } | |
1869 | ||
1870 | /* Print nameless args on STREAM. | |
7dc15bb7 | 1871 | FI is the frameinfo for this frame, START is the offset |
bd5635a1 RP |
1872 | of the first nameless arg, and NUM is the number of nameless args to |
1873 | print. FIRST is nonzero if this is the first argument (not just | |
1874 | the first nameless arg). */ | |
a76ef70a | 1875 | |
bd5635a1 | 1876 | static void |
7dc15bb7 JG |
1877 | print_frame_nameless_args (fi, start, num, first, stream) |
1878 | struct frame_info *fi; | |
e1ce8aa5 | 1879 | long start; |
bd5635a1 RP |
1880 | int num; |
1881 | int first; | |
199b2450 | 1882 | GDB_FILE *stream; |
bd5635a1 RP |
1883 | { |
1884 | int i; | |
7dc15bb7 JG |
1885 | CORE_ADDR argsaddr; |
1886 | long arg_value; | |
1887 | ||
bd5635a1 RP |
1888 | for (i = 0; i < num; i++) |
1889 | { | |
1890 | QUIT; | |
7dc15bb7 JG |
1891 | #ifdef NAMELESS_ARG_VALUE |
1892 | NAMELESS_ARG_VALUE (fi, start, &arg_value); | |
1893 | #else | |
1894 | argsaddr = FRAME_ARGS_ADDRESS (fi); | |
1895 | if (!argsaddr) | |
1896 | return; | |
1897 | ||
1898 | arg_value = read_memory_integer (argsaddr + start, sizeof (int)); | |
1899 | #endif | |
1900 | ||
bd5635a1 RP |
1901 | if (!first) |
1902 | fprintf_filtered (stream, ", "); | |
7dc15bb7 JG |
1903 | |
1904 | #ifdef PRINT_NAMELESS_INTEGER | |
1905 | PRINT_NAMELESS_INTEGER (stream, arg_value); | |
bd5635a1 | 1906 | #else |
7dc15bb7 JG |
1907 | #ifdef PRINT_TYPELESS_INTEGER |
1908 | PRINT_TYPELESS_INTEGER (stream, builtin_type_int, (LONGEST) arg_value); | |
1909 | #else | |
2b576293 | 1910 | fprintf_filtered (stream, "%ld", arg_value); |
7dc15bb7 JG |
1911 | #endif /* PRINT_TYPELESS_INTEGER */ |
1912 | #endif /* PRINT_NAMELESS_INTEGER */ | |
bd5635a1 RP |
1913 | first = 0; |
1914 | start += sizeof (int); | |
1915 | } | |
1916 | } | |
1917 | \f | |
e1ce8aa5 | 1918 | /* ARGSUSED */ |
bd5635a1 RP |
1919 | static void |
1920 | printf_command (arg, from_tty) | |
1921 | char *arg; | |
1922 | int from_tty; | |
1923 | { | |
1924 | register char *f; | |
1925 | register char *s = arg; | |
1926 | char *string; | |
82a2edfb | 1927 | value_ptr *val_args; |
199b2450 TL |
1928 | char *substrings; |
1929 | char *current_substring; | |
bd5635a1 RP |
1930 | int nargs = 0; |
1931 | int allocated_args = 20; | |
199b2450 | 1932 | struct cleanup *old_cleanups; |
bd5635a1 | 1933 | |
82a2edfb | 1934 | val_args = (value_ptr *) xmalloc (allocated_args * sizeof (value_ptr)); |
ad3b8c4a JM |
1935 | old_cleanups = make_cleanup ((make_cleanup_func) free_current_contents, |
1936 | &val_args); | |
bd5635a1 RP |
1937 | |
1938 | if (s == 0) | |
1939 | error_no_arg ("format-control string and values to print"); | |
1940 | ||
1941 | /* Skip white space before format string */ | |
1942 | while (*s == ' ' || *s == '\t') s++; | |
1943 | ||
1944 | /* A format string should follow, enveloped in double quotes */ | |
1945 | if (*s++ != '"') | |
1946 | error ("Bad format string, missing '\"'."); | |
1947 | ||
1948 | /* Parse the format-control string and copy it into the string STRING, | |
1949 | processing some kinds of escape sequence. */ | |
1950 | ||
1951 | f = string = (char *) alloca (strlen (s) + 1); | |
199b2450 | 1952 | |
bd5635a1 RP |
1953 | while (*s != '"') |
1954 | { | |
1955 | int c = *s++; | |
1956 | switch (c) | |
1957 | { | |
1958 | case '\0': | |
1959 | error ("Bad format string, non-terminated '\"'."); | |
bd5635a1 RP |
1960 | |
1961 | case '\\': | |
1962 | switch (c = *s++) | |
1963 | { | |
1964 | case '\\': | |
1965 | *f++ = '\\'; | |
1966 | break; | |
82a2edfb JK |
1967 | case 'a': |
1968 | #ifdef __STDC__ | |
1969 | *f++ = '\a'; | |
1970 | #else | |
1971 | *f++ = '\007'; /* Bell */ | |
1972 | #endif | |
1973 | break; | |
1974 | case 'b': | |
1975 | *f++ = '\b'; | |
1976 | break; | |
1977 | case 'f': | |
1978 | *f++ = '\f'; | |
1979 | break; | |
bd5635a1 RP |
1980 | case 'n': |
1981 | *f++ = '\n'; | |
1982 | break; | |
82a2edfb JK |
1983 | case 'r': |
1984 | *f++ = '\r'; | |
1985 | break; | |
bd5635a1 RP |
1986 | case 't': |
1987 | *f++ = '\t'; | |
1988 | break; | |
82a2edfb JK |
1989 | case 'v': |
1990 | *f++ = '\v'; | |
bd5635a1 RP |
1991 | break; |
1992 | case '"': | |
1993 | *f++ = '"'; | |
1994 | break; | |
1995 | default: | |
1996 | /* ??? TODO: handle other escape sequences */ | |
82a2edfb JK |
1997 | error ("Unrecognized escape character \\%c in format string.", |
1998 | c); | |
bd5635a1 RP |
1999 | } |
2000 | break; | |
2001 | ||
2002 | default: | |
2003 | *f++ = c; | |
2004 | } | |
2005 | } | |
2006 | ||
2007 | /* Skip over " and following space and comma. */ | |
2008 | s++; | |
2009 | *f++ = '\0'; | |
2010 | while (*s == ' ' || *s == '\t') s++; | |
2011 | ||
2012 | if (*s != ',' && *s != 0) | |
2013 | error ("Invalid argument syntax"); | |
2014 | ||
2015 | if (*s == ',') s++; | |
2016 | while (*s == ' ' || *s == '\t') s++; | |
2017 | ||
199b2450 TL |
2018 | /* Need extra space for the '\0's. Doubling the size is sufficient. */ |
2019 | substrings = alloca (strlen (string) * 2); | |
2020 | current_substring = substrings; | |
2021 | ||
bd5635a1 RP |
2022 | { |
2023 | /* Now scan the string for %-specs and see what kinds of args they want. | |
d8fc8773 JK |
2024 | argclass[I] classifies the %-specs so we can give printf_filtered |
2025 | something of the right size. */ | |
199b2450 TL |
2026 | |
2027 | enum argclass {no_arg, int_arg, string_arg, double_arg, long_long_arg}; | |
bd5635a1 | 2028 | enum argclass *argclass; |
199b2450 TL |
2029 | enum argclass this_argclass; |
2030 | char *last_arg; | |
bd5635a1 | 2031 | int nargs_wanted; |
bd5635a1 RP |
2032 | int lcount; |
2033 | int i; | |
19bdd57f | 2034 | |
bd5635a1 RP |
2035 | argclass = (enum argclass *) alloca (strlen (s) * sizeof *argclass); |
2036 | nargs_wanted = 0; | |
2037 | f = string; | |
199b2450 | 2038 | last_arg = string; |
bd5635a1 RP |
2039 | while (*f) |
2040 | if (*f++ == '%') | |
2041 | { | |
2042 | lcount = 0; | |
2043 | while (strchr ("0123456789.hlL-+ #", *f)) | |
2044 | { | |
2045 | if (*f == 'l' || *f == 'L') | |
2046 | lcount++; | |
2047 | f++; | |
2048 | } | |
199b2450 TL |
2049 | switch (*f) |
2050 | { | |
2051 | case 's': | |
2052 | this_argclass = string_arg; | |
2053 | break; | |
2054 | ||
2055 | case 'e': | |
2056 | case 'f': | |
2057 | case 'g': | |
2058 | this_argclass = double_arg; | |
2059 | break; | |
2060 | ||
2061 | case '*': | |
2062 | error ("`*' not supported for precision or width in printf"); | |
2063 | ||
2064 | case 'n': | |
2065 | error ("Format specifier `n' not supported in printf"); | |
2066 | ||
2067 | case '%': | |
2068 | this_argclass = no_arg; | |
2069 | break; | |
2070 | ||
2071 | default: | |
2072 | if (lcount > 1) | |
2073 | this_argclass = long_long_arg; | |
2074 | else | |
2075 | this_argclass = int_arg; | |
2076 | break; | |
2077 | } | |
bd5635a1 | 2078 | f++; |
199b2450 TL |
2079 | if (this_argclass != no_arg) |
2080 | { | |
2081 | strncpy (current_substring, last_arg, f - last_arg); | |
2082 | current_substring += f - last_arg; | |
2083 | *current_substring++ = '\0'; | |
2084 | last_arg = f; | |
2085 | argclass[nargs_wanted++] = this_argclass; | |
2086 | } | |
bd5635a1 | 2087 | } |
8acf767c | 2088 | |
bd5635a1 RP |
2089 | /* Now, parse all arguments and evaluate them. |
2090 | Store the VALUEs in VAL_ARGS. */ | |
8acf767c | 2091 | |
bd5635a1 RP |
2092 | while (*s != '\0') |
2093 | { | |
2094 | char *s1; | |
2095 | if (nargs == allocated_args) | |
82a2edfb JK |
2096 | val_args = (value_ptr *) xrealloc ((char *) val_args, |
2097 | (allocated_args *= 2) | |
2098 | * sizeof (value_ptr)); | |
bd5635a1 RP |
2099 | s1 = s; |
2100 | val_args[nargs] = parse_to_comma_and_eval (&s1); | |
2101 | ||
2102 | /* If format string wants a float, unchecked-convert the value to | |
2103 | floating point of the same size */ | |
2104 | ||
2105 | if (argclass[nargs] == double_arg) | |
2106 | { | |
91550191 SG |
2107 | struct type *type = VALUE_TYPE (val_args[nargs]); |
2108 | if (TYPE_LENGTH (type) == sizeof (float)) | |
bd5635a1 | 2109 | VALUE_TYPE (val_args[nargs]) = builtin_type_float; |
91550191 | 2110 | if (TYPE_LENGTH (type) == sizeof (double)) |
bd5635a1 RP |
2111 | VALUE_TYPE (val_args[nargs]) = builtin_type_double; |
2112 | } | |
2113 | nargs++; | |
2114 | s = s1; | |
2115 | if (*s == ',') | |
2116 | s++; | |
2117 | } | |
2118 | ||
2119 | if (nargs != nargs_wanted) | |
2120 | error ("Wrong number of arguments for specified format-string"); | |
19bdd57f | 2121 | |
199b2450 TL |
2122 | /* Now actually print them. */ |
2123 | current_substring = substrings; | |
bd5635a1 RP |
2124 | for (i = 0; i < nargs; i++) |
2125 | { | |
199b2450 | 2126 | switch (argclass[i]) |
bd5635a1 | 2127 | { |
199b2450 TL |
2128 | case string_arg: |
2129 | { | |
2130 | char *str; | |
2131 | CORE_ADDR tem; | |
2132 | int j; | |
2133 | tem = value_as_pointer (val_args[i]); | |
2134 | ||
2135 | /* This is a %s argument. Find the length of the string. */ | |
2136 | for (j = 0; ; j++) | |
2137 | { | |
2138 | char c; | |
2139 | QUIT; | |
d14573e3 AC |
2140 | read_memory_section (tem + j, &c, 1, |
2141 | VALUE_BFD_SECTION (val_args[i])); | |
199b2450 TL |
2142 | if (c == 0) |
2143 | break; | |
2144 | } | |
2145 | ||
2146 | /* Copy the string contents into a string inside GDB. */ | |
2147 | str = (char *) alloca (j + 1); | |
d14573e3 | 2148 | read_memory_section (tem, str, j, VALUE_BFD_SECTION (val_args[i])); |
199b2450 TL |
2149 | str[j] = 0; |
2150 | ||
d8fc8773 | 2151 | printf_filtered (current_substring, str); |
199b2450 TL |
2152 | } |
2153 | break; | |
2154 | case double_arg: | |
2155 | { | |
2156 | double val = value_as_double (val_args[i]); | |
d8fc8773 | 2157 | printf_filtered (current_substring, val); |
199b2450 TL |
2158 | break; |
2159 | } | |
2160 | case long_long_arg: | |
2161 | #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG) | |
bd5635a1 | 2162 | { |
19bdd57f | 2163 | long long val = value_as_long (val_args[i]); |
d8fc8773 | 2164 | printf_filtered (current_substring, val); |
199b2450 | 2165 | break; |
bd5635a1 | 2166 | } |
199b2450 TL |
2167 | #else |
2168 | error ("long long not supported in printf"); | |
bd5635a1 | 2169 | #endif |
199b2450 | 2170 | case int_arg: |
bd5635a1 | 2171 | { |
199b2450 | 2172 | /* FIXME: there should be separate int_arg and long_arg. */ |
19bdd57f | 2173 | long val = value_as_long (val_args[i]); |
d8fc8773 | 2174 | printf_filtered (current_substring, val); |
199b2450 | 2175 | break; |
bd5635a1 | 2176 | } |
199b2450 TL |
2177 | default: |
2178 | error ("internal error in printf_command"); | |
2179 | } | |
2180 | /* Skip to the next substring. */ | |
2181 | current_substring += strlen (current_substring) + 1; | |
bd5635a1 | 2182 | } |
199b2450 | 2183 | /* Print the portion of the format string after the last argument. */ |
d8fc8773 | 2184 | printf_filtered (last_arg); |
bd5635a1 | 2185 | } |
199b2450 | 2186 | do_cleanups (old_cleanups); |
bd5635a1 RP |
2187 | } |
2188 | \f | |
bd5635a1 RP |
2189 | /* Dump a specified section of assembly code. With no command line |
2190 | arguments, this command will dump the assembly code for the | |
2191 | function surrounding the pc value in the selected frame. With one | |
2192 | argument, it will dump the assembly code surrounding that pc value. | |
2193 | Two arguments are interpeted as bounds within which to dump | |
2194 | assembly. */ | |
2195 | ||
e1ce8aa5 | 2196 | /* ARGSUSED */ |
bd5635a1 RP |
2197 | static void |
2198 | disassemble_command (arg, from_tty) | |
2199 | char *arg; | |
2200 | int from_tty; | |
2201 | { | |
2202 | CORE_ADDR low, high; | |
f1ed4330 | 2203 | char *name; |
d14573e3 | 2204 | CORE_ADDR pc, pc_masked; |
bd5635a1 RP |
2205 | char *space_index; |
2206 | ||
f1ed4330 | 2207 | name = NULL; |
bd5635a1 RP |
2208 | if (!arg) |
2209 | { | |
2210 | if (!selected_frame) | |
2211 | error ("No frame selected.\n"); | |
2212 | ||
2213 | pc = get_frame_pc (selected_frame); | |
f1ed4330 JK |
2214 | if (find_pc_partial_function (pc, &name, &low, &high) == 0) |
2215 | error ("No function contains program counter for selected frame.\n"); | |
d14573e3 | 2216 | low += FUNCTION_START_OFFSET; |
bd5635a1 RP |
2217 | } |
2218 | else if (!(space_index = (char *) strchr (arg, ' '))) | |
2219 | { | |
2220 | /* One argument. */ | |
2221 | pc = parse_and_eval_address (arg); | |
f1ed4330 JK |
2222 | if (find_pc_partial_function (pc, &name, &low, &high) == 0) |
2223 | error ("No function contains specified address.\n"); | |
d6b6757b | 2224 | low += FUNCTION_START_OFFSET; |
bd5635a1 RP |
2225 | } |
2226 | else | |
2227 | { | |
2228 | /* Two arguments. */ | |
2229 | *space_index = '\0'; | |
2230 | low = parse_and_eval_address (arg); | |
2231 | high = parse_and_eval_address (space_index + 1); | |
2232 | } | |
2233 | ||
2234 | printf_filtered ("Dump of assembler code "); | |
f1ed4330 | 2235 | if (name != NULL) |
bd5635a1 | 2236 | { |
bd5635a1 RP |
2237 | printf_filtered ("for function %s:\n", name); |
2238 | } | |
2239 | else | |
f77ad505 | 2240 | { |
833e0d94 | 2241 | printf_filtered ("from "); |
d24c0599 | 2242 | print_address_numeric (low, 1, gdb_stdout); |
833e0d94 | 2243 | printf_filtered (" to "); |
d24c0599 | 2244 | print_address_numeric (high, 1, gdb_stdout); |
833e0d94 | 2245 | printf_filtered (":\n"); |
f77ad505 | 2246 | } |
bd5635a1 RP |
2247 | |
2248 | /* Dump the specified range. */ | |
d14573e3 AC |
2249 | pc = low; |
2250 | ||
2251 | #ifdef GDB_TARGET_MASK_DISAS_PC | |
2252 | pc_masked = GDB_TARGET_MASK_DISAS_PC (pc); | |
2253 | #else | |
2254 | pc_masked = pc; | |
2255 | #endif | |
2256 | ||
242c0d81 | 2257 | while (pc_masked < high) |
bd5635a1 RP |
2258 | { |
2259 | QUIT; | |
d14573e3 | 2260 | print_address (pc_masked, gdb_stdout); |
bd5635a1 | 2261 | printf_filtered (":\t"); |
ca603cff JK |
2262 | /* We often wrap here if there are long symbolic names. */ |
2263 | wrap_here (" "); | |
199b2450 | 2264 | pc += print_insn (pc, gdb_stdout); |
bd5635a1 | 2265 | printf_filtered ("\n"); |
d14573e3 AC |
2266 | |
2267 | #ifdef GDB_TARGET_MASK_DISAS_PC | |
2268 | pc_masked = GDB_TARGET_MASK_DISAS_PC (pc); | |
2269 | #else | |
2270 | pc_masked = pc; | |
2271 | #endif | |
bd5635a1 RP |
2272 | } |
2273 | printf_filtered ("End of assembler dump.\n"); | |
199b2450 | 2274 | gdb_flush (gdb_stdout); |
bd5635a1 RP |
2275 | } |
2276 | ||
a76ef70a SG |
2277 | /* Print the instruction at address MEMADDR in debugged memory, |
2278 | on STREAM. Returns length of the instruction, in bytes. */ | |
2279 | ||
2280 | static int | |
2281 | print_insn (memaddr, stream) | |
2282 | CORE_ADDR memaddr; | |
2283 | GDB_FILE *stream; | |
2284 | { | |
a76ef70a SG |
2285 | /* If there's no disassembler, something is very wrong. */ |
2286 | if (tm_print_insn == NULL) | |
2287 | abort (); | |
2288 | ||
91550191 SG |
2289 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) |
2290 | tm_print_insn_info.endian = BFD_ENDIAN_BIG; | |
2291 | else | |
2292 | tm_print_insn_info.endian = BFD_ENDIAN_LITTLE; | |
d14573e3 AC |
2293 | |
2294 | if (target_architecture != NULL) | |
2295 | tm_print_insn_info.mach = target_architecture->mach; | |
2296 | /* else: should set .mach=0 but some disassemblers don't grok this */ | |
2297 | ||
91550191 | 2298 | return (*tm_print_insn) (memaddr, &tm_print_insn_info); |
a76ef70a SG |
2299 | } |
2300 | ||
bd5635a1 RP |
2301 | \f |
2302 | void | |
2303 | _initialize_printcmd () | |
2304 | { | |
2305 | current_display_number = -1; | |
2306 | ||
2307 | add_info ("address", address_info, | |
d14573e3 AC |
2308 | "Describe where symbol SYM is stored."); |
2309 | ||
2310 | add_info ("symbol", sym_info, | |
2311 | "Describe what symbol is at location ADDR.\n\ | |
2312 | Only for symbols with fixed locations (global or static scope)."); | |
bd5635a1 RP |
2313 | |
2314 | add_com ("x", class_vars, x_command, | |
a76ef70a | 2315 | concat ("Examine memory: x/FMT ADDRESS.\n\ |
bd5635a1 RP |
2316 | ADDRESS is an expression for the memory address to examine.\n\ |
2317 | FMT is a repeat count followed by a format letter and a size letter.\n\ | |
2318 | Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\ | |
a76ef70a SG |
2319 | t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n", |
2320 | "Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\ | |
bd5635a1 RP |
2321 | The specified number of objects of the specified size are printed\n\ |
2322 | according to the format.\n\n\ | |
2323 | Defaults for format and size letters are those previously used.\n\ | |
2324 | Default count is 1. Default address is following last thing printed\n\ | |
a76ef70a | 2325 | with this command or \"print\".", NULL)); |
bd5635a1 RP |
2326 | |
2327 | add_com ("disassemble", class_vars, disassemble_command, | |
2328 | "Disassemble a specified section of memory.\n\ | |
2329 | Default is the function surrounding the pc of the selected frame.\n\ | |
2330 | With a single argument, the function surrounding that address is dumped.\n\ | |
2331 | Two arguments are taken as a range of memory to dump."); | |
2332 | ||
bd5635a1 RP |
2333 | #if 0 |
2334 | add_com ("whereis", class_vars, whereis_command, | |
2335 | "Print line number and file of definition of variable."); | |
2336 | #endif | |
2337 | ||
2338 | add_info ("display", display_info, | |
2339 | "Expressions to display when program stops, with code numbers."); | |
2340 | ||
2341 | add_cmd ("undisplay", class_vars, undisplay_command, | |
2342 | "Cancel some expressions to be displayed when program stops.\n\ | |
2343 | Arguments are the code numbers of the expressions to stop displaying.\n\ | |
2344 | No argument means cancel all automatic-display expressions.\n\ | |
2345 | \"delete display\" has the same effect as this command.\n\ | |
2346 | Do \"info display\" to see current list of code numbers.", | |
2347 | &cmdlist); | |
2348 | ||
2349 | add_com ("display", class_vars, display_command, | |
2350 | "Print value of expression EXP each time the program stops.\n\ | |
2351 | /FMT may be used before EXP as in the \"print\" command.\n\ | |
2352 | /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\ | |
2353 | as in the \"x\" command, and then EXP is used to get the address to examine\n\ | |
2354 | and examining is done as in the \"x\" command.\n\n\ | |
2355 | With no argument, display all currently requested auto-display expressions.\n\ | |
a76ef70a SG |
2356 | Use \"undisplay\" to cancel display requests previously made." |
2357 | ); | |
bd5635a1 RP |
2358 | |
2359 | add_cmd ("display", class_vars, enable_display, | |
2360 | "Enable some expressions to be displayed when program stops.\n\ | |
2361 | Arguments are the code numbers of the expressions to resume displaying.\n\ | |
2362 | No argument means enable all automatic-display expressions.\n\ | |
2363 | Do \"info display\" to see current list of code numbers.", &enablelist); | |
2364 | ||
2365 | add_cmd ("display", class_vars, disable_display_command, | |
2366 | "Disable some expressions to be displayed when program stops.\n\ | |
2367 | Arguments are the code numbers of the expressions to stop displaying.\n\ | |
2368 | No argument means disable all automatic-display expressions.\n\ | |
2369 | Do \"info display\" to see current list of code numbers.", &disablelist); | |
2370 | ||
2371 | add_cmd ("display", class_vars, undisplay_command, | |
2372 | "Cancel some expressions to be displayed when program stops.\n\ | |
2373 | Arguments are the code numbers of the expressions to stop displaying.\n\ | |
2374 | No argument means cancel all automatic-display expressions.\n\ | |
2375 | Do \"info display\" to see current list of code numbers.", &deletelist); | |
2376 | ||
2377 | add_com ("printf", class_vars, printf_command, | |
2378 | "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
2379 | This is useful for formatted output in user-defined commands."); | |
a76ef70a | 2380 | |
bd5635a1 RP |
2381 | add_com ("output", class_vars, output_command, |
2382 | "Like \"print\" but don't put in value history and don't print newline.\n\ | |
2383 | This is useful in user-defined commands."); | |
2384 | ||
2385 | add_prefix_cmd ("set", class_vars, set_command, | |
a76ef70a | 2386 | concat ("Evaluate expression EXP and assign result to variable VAR, using assignment\n\ |
45fe3db4 FF |
2387 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ |
2388 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2389 | with $), a register (a few standard names starting with $), or an actual\n\ | |
a76ef70a SG |
2390 | variable in the program being debugged. EXP is any valid expression.\n", |
2391 | "Use \"set variable\" for variables with names identical to set subcommands.\n\ | |
bd5635a1 | 2392 | \nWith a subcommand, this command modifies parts of the gdb environment.\n\ |
a76ef70a | 2393 | You can see these environment settings with the \"show\" command.", NULL), |
bd5635a1 RP |
2394 | &setlist, "set ", 1, &cmdlist); |
2395 | ||
2396 | /* "call" is the same as "set", but handy for dbx users to call fns. */ | |
2397 | add_com ("call", class_vars, call_command, | |
6fe90fc8 | 2398 | "Call a function in the program.\n\ |
c4668207 JG |
2399 | The argument is the function name and arguments, in the notation of the\n\ |
2400 | current working language. The result is printed and saved in the value\n\ | |
2401 | history, if it is not void."); | |
bd5635a1 RP |
2402 | |
2403 | add_cmd ("variable", class_vars, set_command, | |
45fe3db4 FF |
2404 | "Evaluate expression EXP and assign result to variable VAR, using assignment\n\ |
2405 | syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\ | |
2406 | example). VAR may be a debugger \"convenience\" variable (names starting\n\ | |
2407 | with $), a register (a few standard names starting with $), or an actual\n\ | |
2408 | variable in the program being debugged. EXP is any valid expression.\n\ | |
bd5635a1 RP |
2409 | This may usually be abbreviated to simply \"set\".", |
2410 | &setlist); | |
2411 | ||
2412 | add_com ("print", class_vars, print_command, | |
2413 | concat ("Print value of expression EXP.\n\ | |
2414 | Variables accessible are those of the lexical environment of the selected\n\ | |
2415 | stack frame, plus all those whose scope is global or an entire file.\n\ | |
2416 | \n\ | |
2417 | $NUM gets previous value number NUM. $ and $$ are the last two values.\n\ | |
2418 | $$NUM refers to NUM'th value back from the last one.\n\ | |
a76ef70a SG |
2419 | Names starting with $ refer to registers (with the values they would have\n", |
2420 | "if the program were to return to the stack frame now selected, restoring\n\ | |
bd5635a1 RP |
2421 | all registers saved by frames farther in) or else to debugger\n\ |
2422 | \"convenience\" variables (any such name not a known register).\n\ | |
2423 | Use assignment expressions to give values to convenience variables.\n", | |
2424 | "\n\ | |
2425 | {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\ | |
2426 | @ is a binary operator for treating consecutive data objects\n\ | |
2427 | anywhere in memory as an array. FOO@NUM gives an array whose first\n\ | |
2428 | element is FOO, whose second element is stored in the space following\n\ | |
2429 | where FOO is stored, etc. FOO must be an expression whose value\n\ | |
2430 | resides in memory.\n", | |
2431 | "\n\ | |
2432 | EXP may be preceded with /FMT, where FMT is a format letter\n\ | |
7d9884b9 | 2433 | but no count or size letter (see \"x\" command).", NULL)); |
bd5635a1 RP |
2434 | add_com_alias ("p", "print", class_vars, 1); |
2435 | ||
2436 | add_com ("inspect", class_vars, inspect_command, | |
2437 | "Same as \"print\" command, except that if you are running in the epoch\n\ | |
2438 | environment, the value is printed in its own window."); | |
f77ad505 FF |
2439 | |
2440 | add_show_from_set ( | |
2441 | add_set_cmd ("max-symbolic-offset", no_class, var_uinteger, | |
2442 | (char *)&max_symbolic_offset, | |
2443 | "Set the largest offset that will be printed in <symbol+1234> form.", | |
2444 | &setprintlist), | |
2445 | &showprintlist); | |
b7ccd8e0 PS |
2446 | add_show_from_set ( |
2447 | add_set_cmd ("symbol-filename", no_class, var_boolean, | |
2448 | (char *)&print_symbol_filename, | |
2449 | "Set printing of source filename and line number with <symbol>.", | |
2450 | &setprintlist), | |
2451 | &showprintlist); | |
199b2450 | 2452 | |
242c0d81 SG |
2453 | /* For examine/instruction a single byte quantity is specified as |
2454 | the data. This avoids problems with value_at_lazy() requiring a | |
2455 | valid data type (and rejecting VOID). */ | |
2456 | examine_i_type = init_type (TYPE_CODE_INT, 1, 0, "examine_i_type", NULL); | |
2457 | ||
a76ef70a SG |
2458 | examine_b_type = init_type (TYPE_CODE_INT, 1, 0, "examine_b_type", NULL); |
2459 | examine_h_type = init_type (TYPE_CODE_INT, 2, 0, "examine_h_type", NULL); | |
2460 | examine_w_type = init_type (TYPE_CODE_INT, 4, 0, "examine_w_type", NULL); | |
2461 | examine_g_type = init_type (TYPE_CODE_INT, 8, 0, "examine_g_type", NULL); | |
91550191 SG |
2462 | |
2463 | INIT_DISASSEMBLE_INFO_NO_ARCH (tm_print_insn_info, gdb_stdout, (fprintf_ftype)fprintf_filtered); | |
d14573e3 | 2464 | tm_print_insn_info.flavour = bfd_target_unknown_flavour; |
91550191 SG |
2465 | tm_print_insn_info.read_memory_func = dis_asm_read_memory; |
2466 | tm_print_insn_info.memory_error_func = dis_asm_memory_error; | |
2467 | tm_print_insn_info.print_address_func = dis_asm_print_address; | |
bd5635a1 | 2468 | } |