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c906108c SS |
1 | /* Print values for GDB, the GNU debugger. |
2 | Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1998 | |
c5aa993b | 3 | Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include "gdb_string.h" | |
24 | #include "symtab.h" | |
25 | #include "gdbtypes.h" | |
26 | #include "value.h" | |
27 | #include "gdbcore.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "target.h" | |
30 | #include "obstack.h" | |
31 | #include "language.h" | |
32 | #include "demangle.h" | |
33 | #include "annotate.h" | |
34 | #include "valprint.h" | |
35 | ||
36 | #include <errno.h> | |
37 | ||
38 | /* Prototypes for local functions */ | |
39 | ||
c5aa993b JM |
40 | static void print_hex_chars PARAMS ((GDB_FILE *, unsigned char *, |
41 | unsigned int)); | |
c906108c SS |
42 | |
43 | static void show_print PARAMS ((char *, int)); | |
44 | ||
45 | static void set_print PARAMS ((char *, int)); | |
46 | ||
47 | static void set_radix PARAMS ((char *, int)); | |
48 | ||
49 | static void show_radix PARAMS ((char *, int)); | |
50 | ||
51 | static void set_input_radix PARAMS ((char *, int, struct cmd_list_element *)); | |
52 | ||
53 | static void set_input_radix_1 PARAMS ((int, unsigned)); | |
54 | ||
55 | static void set_output_radix PARAMS ((char *, int, struct cmd_list_element *)); | |
56 | ||
57 | static void set_output_radix_1 PARAMS ((int, unsigned)); | |
58 | ||
59 | void _initialize_valprint PARAMS ((void)); | |
60 | ||
61 | /* Maximum number of chars to print for a string pointer value or vector | |
62 | contents, or UINT_MAX for no limit. Note that "set print elements 0" | |
63 | stores UINT_MAX in print_max, which displays in a show command as | |
64 | "unlimited". */ | |
65 | ||
66 | unsigned int print_max; | |
67 | #define PRINT_MAX_DEFAULT 200 /* Start print_max off at this value. */ | |
68 | ||
69 | /* Default input and output radixes, and output format letter. */ | |
70 | ||
71 | unsigned input_radix = 10; | |
72 | unsigned output_radix = 10; | |
73 | int output_format = 0; | |
74 | ||
75 | /* Print repeat counts if there are more than this many repetitions of an | |
76 | element in an array. Referenced by the low level language dependent | |
77 | print routines. */ | |
78 | ||
79 | unsigned int repeat_count_threshold = 10; | |
80 | ||
81 | /* If nonzero, stops printing of char arrays at first null. */ | |
82 | ||
83 | int stop_print_at_null; | |
84 | ||
85 | /* Controls pretty printing of structures. */ | |
86 | ||
87 | int prettyprint_structs; | |
88 | ||
89 | /* Controls pretty printing of arrays. */ | |
90 | ||
91 | int prettyprint_arrays; | |
92 | ||
93 | /* If nonzero, causes unions inside structures or other unions to be | |
94 | printed. */ | |
95 | ||
96 | int unionprint; /* Controls printing of nested unions. */ | |
97 | ||
98 | /* If nonzero, causes machine addresses to be printed in certain contexts. */ | |
99 | ||
100 | int addressprint; /* Controls printing of machine addresses */ | |
c906108c | 101 | \f |
c5aa993b | 102 | |
c906108c SS |
103 | /* Print data of type TYPE located at VALADDR (within GDB), which came from |
104 | the inferior at address ADDRESS, onto stdio stream STREAM according to | |
105 | FORMAT (a letter, or 0 for natural format using TYPE). | |
106 | ||
107 | If DEREF_REF is nonzero, then dereference references, otherwise just print | |
108 | them like pointers. | |
109 | ||
110 | The PRETTY parameter controls prettyprinting. | |
111 | ||
112 | If the data are a string pointer, returns the number of string characters | |
113 | printed. | |
114 | ||
115 | FIXME: The data at VALADDR is in target byte order. If gdb is ever | |
116 | enhanced to be able to debug more than the single target it was compiled | |
117 | for (specific CPU type and thus specific target byte ordering), then | |
118 | either the print routines are going to have to take this into account, | |
119 | or the data is going to have to be passed into here already converted | |
120 | to the host byte ordering, whichever is more convenient. */ | |
121 | ||
122 | ||
123 | int | |
124 | val_print (type, valaddr, embedded_offset, address, | |
c5aa993b | 125 | stream, format, deref_ref, recurse, pretty) |
c906108c SS |
126 | struct type *type; |
127 | char *valaddr; | |
128 | int embedded_offset; | |
129 | CORE_ADDR address; | |
130 | GDB_FILE *stream; | |
131 | int format; | |
132 | int deref_ref; | |
133 | int recurse; | |
134 | enum val_prettyprint pretty; | |
135 | { | |
136 | struct type *real_type = check_typedef (type); | |
137 | if (pretty == Val_pretty_default) | |
138 | { | |
139 | pretty = prettyprint_structs ? Val_prettyprint : Val_no_prettyprint; | |
140 | } | |
c5aa993b | 141 | |
c906108c SS |
142 | QUIT; |
143 | ||
144 | /* Ensure that the type is complete and not just a stub. If the type is | |
145 | only a stub and we can't find and substitute its complete type, then | |
146 | print appropriate string and return. */ | |
147 | ||
148 | if (TYPE_FLAGS (real_type) & TYPE_FLAG_STUB) | |
149 | { | |
150 | fprintf_filtered (stream, "<incomplete type>"); | |
151 | gdb_flush (stream); | |
152 | return (0); | |
153 | } | |
c5aa993b | 154 | |
c906108c | 155 | return (LA_VAL_PRINT (type, valaddr, embedded_offset, address, |
c5aa993b | 156 | stream, format, deref_ref, recurse, pretty)); |
c906108c SS |
157 | } |
158 | ||
159 | /* Print the value VAL in C-ish syntax on stream STREAM. | |
160 | FORMAT is a format-letter, or 0 for print in natural format of data type. | |
161 | If the object printed is a string pointer, returns | |
162 | the number of string bytes printed. */ | |
163 | ||
164 | int | |
165 | value_print (val, stream, format, pretty) | |
166 | value_ptr val; | |
167 | GDB_FILE *stream; | |
168 | int format; | |
169 | enum val_prettyprint pretty; | |
170 | { | |
171 | if (val == 0) | |
172 | { | |
173 | printf_filtered ("<address of value unknown>"); | |
174 | return 0; | |
175 | } | |
176 | if (VALUE_OPTIMIZED_OUT (val)) | |
177 | { | |
178 | printf_filtered ("<value optimized out>"); | |
179 | return 0; | |
180 | } | |
181 | return LA_VALUE_PRINT (val, stream, format, pretty); | |
182 | } | |
183 | ||
184 | /* Called by various <lang>_val_print routines to print | |
185 | TYPE_CODE_INT's. TYPE is the type. VALADDR is the address of the | |
186 | value. STREAM is where to print the value. */ | |
187 | ||
188 | void | |
189 | val_print_type_code_int (type, valaddr, stream) | |
190 | struct type *type; | |
191 | char *valaddr; | |
192 | GDB_FILE *stream; | |
193 | { | |
194 | if (TYPE_LENGTH (type) > sizeof (LONGEST)) | |
195 | { | |
196 | LONGEST val; | |
197 | ||
198 | if (TYPE_UNSIGNED (type) | |
199 | && extract_long_unsigned_integer (valaddr, TYPE_LENGTH (type), | |
200 | &val)) | |
201 | { | |
202 | print_longest (stream, 'u', 0, val); | |
203 | } | |
204 | else | |
205 | { | |
206 | /* Signed, or we couldn't turn an unsigned value into a | |
207 | LONGEST. For signed values, one could assume two's | |
208 | complement (a reasonable assumption, I think) and do | |
209 | better than this. */ | |
210 | print_hex_chars (stream, (unsigned char *) valaddr, | |
211 | TYPE_LENGTH (type)); | |
212 | } | |
213 | } | |
214 | else | |
215 | { | |
216 | #ifdef PRINT_TYPELESS_INTEGER | |
217 | PRINT_TYPELESS_INTEGER (stream, type, unpack_long (type, valaddr)); | |
218 | #else | |
219 | print_longest (stream, TYPE_UNSIGNED (type) ? 'u' : 'd', 0, | |
220 | unpack_long (type, valaddr)); | |
221 | #endif | |
222 | } | |
223 | } | |
224 | ||
225 | /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g. | |
226 | The raison d'etre of this function is to consolidate printing of | |
227 | LONG_LONG's into this one function. Some platforms have long longs but | |
228 | don't have a printf() that supports "ll" in the format string. We handle | |
229 | these by seeing if the number is representable as either a signed or | |
230 | unsigned long, depending upon what format is desired, and if not we just | |
231 | bail out and print the number in hex. | |
232 | ||
233 | The format chars b,h,w,g are from print_scalar_formatted(). If USE_LOCAL, | |
234 | format it according to the current language (this should be used for most | |
235 | integers which GDB prints, the exception is things like protocols where | |
236 | the format of the integer is a protocol thing, not a user-visible thing). | |
c5aa993b | 237 | */ |
c906108c SS |
238 | |
239 | #if defined (CC_HAS_LONG_LONG) && !defined (PRINTF_HAS_LONG_LONG) | |
c5aa993b | 240 | static void print_decimal PARAMS ((GDB_FILE * stream, char *sign, int use_local, ULONGEST val_ulong)); |
c906108c SS |
241 | static void |
242 | print_decimal (stream, sign, use_local, val_ulong) | |
243 | GDB_FILE *stream; | |
244 | char *sign; | |
245 | int use_local; | |
246 | ULONGEST val_ulong; | |
247 | { | |
248 | unsigned long temp[3]; | |
249 | int i = 0; | |
250 | do | |
251 | { | |
252 | temp[i] = val_ulong % (1000 * 1000 * 1000); | |
253 | val_ulong /= (1000 * 1000 * 1000); | |
254 | i++; | |
255 | } | |
256 | while (val_ulong != 0 && i < (sizeof (temp) / sizeof (temp[0]))); | |
257 | switch (i) | |
258 | { | |
259 | case 1: | |
260 | fprintf_filtered (stream, "%s%lu", | |
261 | sign, temp[0]); | |
262 | break; | |
263 | case 2: | |
264 | fprintf_filtered (stream, "%s%lu%09lu", | |
265 | sign, temp[1], temp[0]); | |
266 | break; | |
267 | case 3: | |
268 | fprintf_filtered (stream, "%s%lu%09lu%09lu", | |
269 | sign, temp[2], temp[1], temp[0]); | |
270 | break; | |
271 | default: | |
272 | abort (); | |
273 | } | |
274 | return; | |
275 | } | |
276 | #endif | |
277 | ||
278 | void | |
279 | print_longest (stream, format, use_local, val_long) | |
280 | GDB_FILE *stream; | |
281 | int format; | |
282 | int use_local; | |
283 | LONGEST val_long; | |
284 | { | |
285 | #if defined (CC_HAS_LONG_LONG) && !defined (PRINTF_HAS_LONG_LONG) | |
286 | if (sizeof (long) < sizeof (LONGEST)) | |
287 | { | |
288 | switch (format) | |
289 | { | |
290 | case 'd': | |
291 | { | |
292 | /* Print a signed value, that doesn't fit in a long */ | |
293 | if ((long) val_long != val_long) | |
294 | { | |
295 | if (val_long < 0) | |
296 | print_decimal (stream, "-", use_local, -val_long); | |
297 | else | |
298 | print_decimal (stream, "", use_local, val_long); | |
299 | return; | |
300 | } | |
301 | break; | |
302 | } | |
303 | case 'u': | |
304 | { | |
305 | /* Print an unsigned value, that doesn't fit in a long */ | |
306 | if ((unsigned long) val_long != (ULONGEST) val_long) | |
307 | { | |
308 | print_decimal (stream, "", use_local, val_long); | |
309 | return; | |
310 | } | |
311 | break; | |
312 | } | |
313 | case 'x': | |
314 | case 'o': | |
315 | case 'b': | |
316 | case 'h': | |
317 | case 'w': | |
318 | case 'g': | |
319 | /* Print as unsigned value, must fit completely in unsigned long */ | |
320 | { | |
321 | unsigned long temp = val_long; | |
322 | if (temp != val_long) | |
323 | { | |
324 | /* Urk, can't represent value in long so print in hex. | |
325 | Do shift in two operations so that if sizeof (long) | |
326 | == sizeof (LONGEST) we can avoid warnings from | |
327 | picky compilers about shifts >= the size of the | |
328 | shiftee in bits */ | |
329 | unsigned long vbot = (unsigned long) val_long; | |
330 | LONGEST temp = (val_long >> (sizeof (long) * HOST_CHAR_BIT - 1)); | |
331 | unsigned long vtop = temp >> 1; | |
332 | fprintf_filtered (stream, "0x%lx%08lx", vtop, vbot); | |
333 | return; | |
334 | } | |
335 | break; | |
336 | } | |
337 | } | |
338 | } | |
339 | #endif | |
340 | ||
341 | #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG) | |
342 | switch (format) | |
343 | { | |
344 | case 'd': | |
345 | fprintf_filtered (stream, | |
346 | use_local ? local_decimal_format_custom ("ll") | |
c5aa993b | 347 | : "%lld", |
c906108c SS |
348 | val_long); |
349 | break; | |
350 | case 'u': | |
351 | fprintf_filtered (stream, "%llu", val_long); | |
352 | break; | |
353 | case 'x': | |
354 | fprintf_filtered (stream, | |
355 | use_local ? local_hex_format_custom ("ll") | |
c5aa993b | 356 | : "%llx", |
c906108c SS |
357 | val_long); |
358 | break; | |
359 | case 'o': | |
360 | fprintf_filtered (stream, | |
361 | use_local ? local_octal_format_custom ("ll") | |
c5aa993b | 362 | : "%llo", |
c906108c SS |
363 | val_long); |
364 | break; | |
365 | case 'b': | |
366 | fprintf_filtered (stream, local_hex_format_custom ("02ll"), val_long); | |
367 | break; | |
368 | case 'h': | |
369 | fprintf_filtered (stream, local_hex_format_custom ("04ll"), val_long); | |
370 | break; | |
371 | case 'w': | |
372 | fprintf_filtered (stream, local_hex_format_custom ("08ll"), val_long); | |
373 | break; | |
374 | case 'g': | |
375 | fprintf_filtered (stream, local_hex_format_custom ("016ll"), val_long); | |
376 | break; | |
377 | default: | |
378 | abort (); | |
379 | } | |
c5aa993b | 380 | #else /* !CC_HAS_LONG_LONG || !PRINTF_HAS_LONG_LONG */ |
c906108c SS |
381 | /* In the following it is important to coerce (val_long) to a long. It does |
382 | nothing if !LONG_LONG, but it will chop off the top half (which we know | |
383 | we can ignore) if the host supports long longs. */ | |
384 | ||
385 | switch (format) | |
386 | { | |
387 | case 'd': | |
388 | fprintf_filtered (stream, | |
389 | use_local ? local_decimal_format_custom ("l") | |
c5aa993b | 390 | : "%ld", |
c906108c SS |
391 | (long) val_long); |
392 | break; | |
393 | case 'u': | |
394 | fprintf_filtered (stream, "%lu", (unsigned long) val_long); | |
395 | break; | |
396 | case 'x': | |
397 | fprintf_filtered (stream, | |
398 | use_local ? local_hex_format_custom ("l") | |
c5aa993b | 399 | : "%lx", |
c906108c SS |
400 | (unsigned long) val_long); |
401 | break; | |
402 | case 'o': | |
403 | fprintf_filtered (stream, | |
404 | use_local ? local_octal_format_custom ("l") | |
c5aa993b | 405 | : "%lo", |
c906108c SS |
406 | (unsigned long) val_long); |
407 | break; | |
408 | case 'b': | |
409 | fprintf_filtered (stream, local_hex_format_custom ("02l"), | |
410 | (unsigned long) val_long); | |
411 | break; | |
412 | case 'h': | |
413 | fprintf_filtered (stream, local_hex_format_custom ("04l"), | |
414 | (unsigned long) val_long); | |
415 | break; | |
416 | case 'w': | |
417 | fprintf_filtered (stream, local_hex_format_custom ("08l"), | |
418 | (unsigned long) val_long); | |
419 | break; | |
420 | case 'g': | |
421 | fprintf_filtered (stream, local_hex_format_custom ("016l"), | |
422 | (unsigned long) val_long); | |
423 | break; | |
424 | default: | |
425 | abort (); | |
426 | } | |
427 | #endif /* CC_HAS_LONG_LONG || PRINTF_HAS_LONG_LONG */ | |
428 | } | |
429 | ||
7a292a7a | 430 | #if 0 |
c906108c SS |
431 | void |
432 | strcat_longest (format, use_local, val_long, buf, buflen) | |
433 | int format; | |
434 | int use_local; | |
435 | LONGEST val_long; | |
436 | char *buf; | |
437 | int buflen; /* ignored, for now */ | |
438 | { | |
439 | #if defined (CC_HAS_LONG_LONG) && !defined (PRINTF_HAS_LONG_LONG) | |
440 | long vtop, vbot; | |
441 | ||
442 | vtop = val_long >> (sizeof (long) * HOST_CHAR_BIT); | |
443 | vbot = (long) val_long; | |
444 | ||
445 | if ((format == 'd' && (val_long < INT_MIN || val_long > INT_MAX)) | |
c5aa993b | 446 | || ((format == 'u' || format == 'x') && (unsigned long long) val_long > UINT_MAX)) |
c906108c SS |
447 | { |
448 | sprintf (buf, "0x%lx%08lx", vtop, vbot); | |
449 | return; | |
450 | } | |
451 | #endif | |
452 | ||
453 | #ifdef PRINTF_HAS_LONG_LONG | |
454 | switch (format) | |
455 | { | |
456 | case 'd': | |
457 | sprintf (buf, | |
c5aa993b | 458 | (use_local ? local_decimal_format_custom ("ll") : "%lld"), |
c906108c SS |
459 | val_long); |
460 | break; | |
461 | case 'u': | |
c5aa993b | 462 | sprintf (buf, "%llu", val_long); |
c906108c SS |
463 | break; |
464 | case 'x': | |
465 | sprintf (buf, | |
c5aa993b JM |
466 | (use_local ? local_hex_format_custom ("ll") : "%llx"), |
467 | ||
c906108c SS |
468 | val_long); |
469 | break; | |
470 | case 'o': | |
471 | sprintf (buf, | |
c5aa993b | 472 | (use_local ? local_octal_format_custom ("ll") : "%llo"), |
c906108c SS |
473 | val_long); |
474 | break; | |
475 | case 'b': | |
c5aa993b | 476 | sprintf (buf, local_hex_format_custom ("02ll"), val_long); |
c906108c SS |
477 | break; |
478 | case 'h': | |
c5aa993b | 479 | sprintf (buf, local_hex_format_custom ("04ll"), val_long); |
c906108c SS |
480 | break; |
481 | case 'w': | |
c5aa993b | 482 | sprintf (buf, local_hex_format_custom ("08ll"), val_long); |
c906108c SS |
483 | break; |
484 | case 'g': | |
c5aa993b | 485 | sprintf (buf, local_hex_format_custom ("016ll"), val_long); |
c906108c SS |
486 | break; |
487 | default: | |
488 | abort (); | |
489 | } | |
490 | #else /* !PRINTF_HAS_LONG_LONG */ | |
491 | /* In the following it is important to coerce (val_long) to a long. It does | |
492 | nothing if !LONG_LONG, but it will chop off the top half (which we know | |
493 | we can ignore) if the host supports long longs. */ | |
494 | ||
495 | switch (format) | |
496 | { | |
497 | case 'd': | |
c5aa993b JM |
498 | sprintf (buf, (use_local ? local_decimal_format_custom ("l") : "%ld"), |
499 | ((long) val_long)); | |
c906108c SS |
500 | break; |
501 | case 'u': | |
c5aa993b | 502 | sprintf (buf, "%lu", ((unsigned long) val_long)); |
c906108c SS |
503 | break; |
504 | case 'x': | |
c5aa993b | 505 | sprintf (buf, (use_local ? local_hex_format_custom ("l") : "%lx"), |
c906108c SS |
506 | ((long) val_long)); |
507 | break; | |
508 | case 'o': | |
c5aa993b | 509 | sprintf (buf, (use_local ? local_octal_format_custom ("l") : "%lo"), |
c906108c SS |
510 | ((long) val_long)); |
511 | break; | |
512 | case 'b': | |
c5aa993b | 513 | sprintf (buf, local_hex_format_custom ("02l"), |
c906108c SS |
514 | ((long) val_long)); |
515 | break; | |
516 | case 'h': | |
c5aa993b | 517 | sprintf (buf, local_hex_format_custom ("04l"), |
c906108c SS |
518 | ((long) val_long)); |
519 | break; | |
520 | case 'w': | |
c5aa993b | 521 | sprintf (buf, local_hex_format_custom ("08l"), |
c906108c SS |
522 | ((long) val_long)); |
523 | break; | |
524 | case 'g': | |
525 | sprintf (buf, local_hex_format_custom ("016l"), | |
526 | ((long) val_long)); | |
527 | break; | |
528 | default: | |
529 | abort (); | |
530 | } | |
c5aa993b | 531 | |
c906108c SS |
532 | #endif /* !PRINTF_HAS_LONG_LONG */ |
533 | } | |
7a292a7a | 534 | #endif |
c906108c SS |
535 | |
536 | /* This used to be a macro, but I don't think it is called often enough | |
537 | to merit such treatment. */ | |
538 | /* Convert a LONGEST to an int. This is used in contexts (e.g. number of | |
539 | arguments to a function, number in a value history, register number, etc.) | |
540 | where the value must not be larger than can fit in an int. */ | |
541 | ||
542 | int | |
543 | longest_to_int (arg) | |
544 | LONGEST arg; | |
545 | { | |
546 | /* Let the compiler do the work */ | |
547 | int rtnval = (int) arg; | |
548 | ||
549 | /* Check for overflows or underflows */ | |
550 | if (sizeof (LONGEST) > sizeof (int)) | |
551 | { | |
552 | if (rtnval != arg) | |
553 | { | |
554 | error ("Value out of range."); | |
555 | } | |
556 | } | |
557 | return (rtnval); | |
558 | } | |
559 | ||
560 | /* Print a floating point value of type TYPE, pointed to in GDB by VALADDR, | |
561 | on STREAM. */ | |
562 | ||
563 | void | |
564 | print_floating (valaddr, type, stream) | |
565 | char *valaddr; | |
566 | struct type *type; | |
567 | GDB_FILE *stream; | |
568 | { | |
569 | DOUBLEST doub; | |
570 | int inv; | |
571 | unsigned len = TYPE_LENGTH (type); | |
c5aa993b | 572 | |
c906108c SS |
573 | #if defined (IEEE_FLOAT) |
574 | ||
575 | /* Check for NaN's. Note that this code does not depend on us being | |
576 | on an IEEE conforming system. It only depends on the target | |
577 | machine using IEEE representation. This means (a) | |
578 | cross-debugging works right, and (2) IEEE_FLOAT can (and should) | |
579 | be defined for systems like the 68881, which uses IEEE | |
580 | representation, but is not IEEE conforming. */ | |
581 | ||
582 | { | |
583 | unsigned long low, high; | |
584 | /* Is the sign bit 0? */ | |
585 | int nonnegative; | |
586 | /* Is it is a NaN (i.e. the exponent is all ones and | |
587 | the fraction is nonzero)? */ | |
588 | int is_nan; | |
589 | ||
590 | /* For lint, initialize these two variables to suppress warning: */ | |
591 | low = high = nonnegative = 0; | |
592 | if (len == 4) | |
593 | { | |
594 | /* It's single precision. */ | |
595 | /* Assume that floating point byte order is the same as | |
596 | integer byte order. */ | |
597 | low = extract_unsigned_integer (valaddr, 4); | |
598 | nonnegative = ((low & 0x80000000) == 0); | |
c5aa993b | 599 | is_nan = ((((low >> 23) & 0xFF) == 0xFF) |
c906108c SS |
600 | && 0 != (low & 0x7FFFFF)); |
601 | low &= 0x7fffff; | |
602 | high = 0; | |
603 | } | |
604 | else if (len == 8) | |
605 | { | |
606 | /* It's double precision. Get the high and low words. */ | |
607 | ||
608 | /* Assume that floating point byte order is the same as | |
609 | integer byte order. */ | |
610 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
611 | { | |
612 | low = extract_unsigned_integer (valaddr + 4, 4); | |
613 | high = extract_unsigned_integer (valaddr, 4); | |
614 | } | |
615 | else | |
616 | { | |
617 | low = extract_unsigned_integer (valaddr, 4); | |
618 | high = extract_unsigned_integer (valaddr + 4, 4); | |
619 | } | |
620 | nonnegative = ((high & 0x80000000) == 0); | |
621 | is_nan = (((high >> 20) & 0x7ff) == 0x7ff | |
c5aa993b | 622 | && !((((high & 0xfffff) == 0)) && (low == 0))); |
c906108c SS |
623 | high &= 0xfffff; |
624 | } | |
625 | else | |
626 | /* Extended. We can't detect NaNs for extendeds yet. Also note | |
c5aa993b JM |
627 | that currently extendeds get nuked to double in |
628 | REGISTER_CONVERTIBLE. */ | |
c906108c SS |
629 | is_nan = 0; |
630 | ||
631 | if (is_nan) | |
632 | { | |
633 | /* The meaning of the sign and fraction is not defined by IEEE. | |
634 | But the user might know what they mean. For example, they | |
635 | (in an implementation-defined manner) distinguish between | |
636 | signaling and quiet NaN's. */ | |
637 | if (high) | |
638 | fprintf_filtered (stream, "-NaN(0x%lx%.8lx)" + nonnegative, | |
639 | high, low); | |
640 | else | |
641 | fprintf_filtered (stream, "-NaN(0x%lx)" + nonnegative, low); | |
642 | return; | |
643 | } | |
644 | } | |
645 | #endif /* IEEE_FLOAT. */ | |
646 | ||
647 | doub = unpack_double (type, valaddr, &inv); | |
648 | if (inv) | |
649 | { | |
650 | fprintf_filtered (stream, "<invalid float value>"); | |
651 | return; | |
652 | } | |
653 | ||
654 | if (len < sizeof (double)) | |
c5aa993b | 655 | fprintf_filtered (stream, "%.9g", (double) doub); |
c906108c | 656 | else if (len == sizeof (double)) |
c5aa993b | 657 | fprintf_filtered (stream, "%.17g", (double) doub); |
c906108c SS |
658 | else |
659 | #ifdef PRINTF_HAS_LONG_DOUBLE | |
660 | fprintf_filtered (stream, "%.35Lg", doub); | |
661 | #else | |
662 | /* This at least wins with values that are representable as doubles */ | |
663 | fprintf_filtered (stream, "%.17g", (double) doub); | |
664 | #endif | |
665 | } | |
666 | ||
c5aa993b | 667 | void |
c906108c SS |
668 | print_binary_chars (stream, valaddr, len) |
669 | GDB_FILE *stream; | |
670 | unsigned char *valaddr; | |
671 | unsigned len; | |
672 | { | |
673 | ||
674 | #define BITS_IN_BYTES 8 | |
675 | ||
676 | unsigned char *p; | |
c5aa993b JM |
677 | int i; |
678 | int b; | |
c906108c SS |
679 | |
680 | /* Declared "int" so it will be signed. | |
681 | * This ensures that right shift will shift in zeros. | |
682 | */ | |
c5aa993b | 683 | const int mask = 0x080; |
c906108c SS |
684 | |
685 | /* FIXME: We should be not printing leading zeroes in most cases. */ | |
686 | ||
687 | fprintf_filtered (stream, local_binary_format_prefix ()); | |
688 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
689 | { | |
690 | for (p = valaddr; | |
691 | p < valaddr + len; | |
692 | p++) | |
693 | { | |
c5aa993b JM |
694 | /* Every byte has 8 binary characters; peel off |
695 | * and print from the MSB end. | |
696 | */ | |
697 | for (i = 0; i < (BITS_IN_BYTES * sizeof (*p)); i++) | |
698 | { | |
699 | if (*p & (mask >> i)) | |
700 | b = 1; | |
701 | else | |
702 | b = 0; | |
703 | ||
704 | fprintf_filtered (stream, "%1d", b); | |
705 | } | |
c906108c SS |
706 | } |
707 | } | |
708 | else | |
709 | { | |
710 | for (p = valaddr + len - 1; | |
711 | p >= valaddr; | |
712 | p--) | |
713 | { | |
c5aa993b JM |
714 | for (i = 0; i < (BITS_IN_BYTES * sizeof (*p)); i++) |
715 | { | |
716 | if (*p & (mask >> i)) | |
717 | b = 1; | |
718 | else | |
719 | b = 0; | |
720 | ||
721 | fprintf_filtered (stream, "%1d", b); | |
722 | } | |
c906108c SS |
723 | } |
724 | } | |
725 | fprintf_filtered (stream, local_binary_format_suffix ()); | |
726 | } | |
727 | ||
728 | /* VALADDR points to an integer of LEN bytes. | |
729 | * Print it in octal on stream or format it in buf. | |
730 | */ | |
731 | void | |
732 | print_octal_chars (stream, valaddr, len) | |
733 | GDB_FILE *stream; | |
734 | unsigned char *valaddr; | |
735 | unsigned len; | |
736 | { | |
737 | unsigned char *p; | |
738 | unsigned char octa1, octa2, octa3, carry; | |
c5aa993b JM |
739 | int cycle; |
740 | ||
c906108c SS |
741 | /* FIXME: We should be not printing leading zeroes in most cases. */ |
742 | ||
743 | ||
744 | /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track | |
745 | * the extra bits, which cycle every three bytes: | |
746 | * | |
747 | * Byte side: 0 1 2 3 | |
748 | * | | | | | |
749 | * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 | | |
750 | * | |
751 | * Octal side: 0 1 carry 3 4 carry ... | |
752 | * | |
753 | * Cycle number: 0 1 2 | |
754 | * | |
755 | * But of course we are printing from the high side, so we have to | |
756 | * figure out where in the cycle we are so that we end up with no | |
757 | * left over bits at the end. | |
758 | */ | |
759 | #define BITS_IN_OCTAL 3 | |
760 | #define HIGH_ZERO 0340 | |
761 | #define LOW_ZERO 0016 | |
762 | #define CARRY_ZERO 0003 | |
763 | #define HIGH_ONE 0200 | |
764 | #define MID_ONE 0160 | |
765 | #define LOW_ONE 0016 | |
766 | #define CARRY_ONE 0001 | |
767 | #define HIGH_TWO 0300 | |
768 | #define MID_TWO 0070 | |
769 | #define LOW_TWO 0007 | |
770 | ||
771 | /* For 32 we start in cycle 2, with two bits and one bit carry; | |
772 | * for 64 in cycle in cycle 1, with one bit and a two bit carry. | |
773 | */ | |
774 | cycle = (len * BITS_IN_BYTES) % BITS_IN_OCTAL; | |
775 | carry = 0; | |
c5aa993b | 776 | |
c906108c SS |
777 | fprintf_filtered (stream, local_octal_format_prefix ()); |
778 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
779 | { | |
780 | for (p = valaddr; | |
781 | p < valaddr + len; | |
782 | p++) | |
783 | { | |
c5aa993b JM |
784 | switch (cycle) |
785 | { | |
786 | case 0: | |
787 | /* No carry in, carry out two bits. | |
788 | */ | |
789 | octa1 = (HIGH_ZERO & *p) >> 5; | |
790 | octa2 = (LOW_ZERO & *p) >> 2; | |
791 | carry = (CARRY_ZERO & *p); | |
792 | fprintf_filtered (stream, "%o", octa1); | |
793 | fprintf_filtered (stream, "%o", octa2); | |
794 | break; | |
795 | ||
796 | case 1: | |
797 | /* Carry in two bits, carry out one bit. | |
798 | */ | |
799 | octa1 = (carry << 1) | ((HIGH_ONE & *p) >> 7); | |
800 | octa2 = (MID_ONE & *p) >> 4; | |
801 | octa3 = (LOW_ONE & *p) >> 1; | |
802 | carry = (CARRY_ONE & *p); | |
803 | fprintf_filtered (stream, "%o", octa1); | |
804 | fprintf_filtered (stream, "%o", octa2); | |
805 | fprintf_filtered (stream, "%o", octa3); | |
806 | break; | |
807 | ||
808 | case 2: | |
809 | /* Carry in one bit, no carry out. | |
810 | */ | |
811 | octa1 = (carry << 2) | ((HIGH_TWO & *p) >> 6); | |
812 | octa2 = (MID_TWO & *p) >> 3; | |
813 | octa3 = (LOW_TWO & *p); | |
814 | carry = 0; | |
815 | fprintf_filtered (stream, "%o", octa1); | |
816 | fprintf_filtered (stream, "%o", octa2); | |
817 | fprintf_filtered (stream, "%o", octa3); | |
818 | break; | |
819 | ||
820 | default: | |
821 | error ("Internal error in octal conversion;"); | |
822 | } | |
823 | ||
824 | cycle++; | |
825 | cycle = cycle % BITS_IN_OCTAL; | |
c906108c SS |
826 | } |
827 | } | |
828 | else | |
829 | { | |
830 | for (p = valaddr + len - 1; | |
831 | p >= valaddr; | |
832 | p--) | |
833 | { | |
c5aa993b JM |
834 | switch (cycle) |
835 | { | |
836 | case 0: | |
837 | /* Carry out, no carry in */ | |
838 | octa1 = (HIGH_ZERO & *p) >> 5; | |
839 | octa2 = (LOW_ZERO & *p) >> 2; | |
840 | carry = (CARRY_ZERO & *p); | |
841 | fprintf_filtered (stream, "%o", octa1); | |
842 | fprintf_filtered (stream, "%o", octa2); | |
843 | break; | |
844 | ||
845 | case 1: | |
846 | /* Carry in, carry out */ | |
847 | octa1 = (carry << 1) | ((HIGH_ONE & *p) >> 7); | |
848 | octa2 = (MID_ONE & *p) >> 4; | |
849 | octa3 = (LOW_ONE & *p) >> 1; | |
850 | carry = (CARRY_ONE & *p); | |
851 | fprintf_filtered (stream, "%o", octa1); | |
852 | fprintf_filtered (stream, "%o", octa2); | |
853 | fprintf_filtered (stream, "%o", octa3); | |
854 | break; | |
855 | ||
856 | case 2: | |
857 | /* Carry in, no carry out */ | |
858 | octa1 = (carry << 2) | ((HIGH_TWO & *p) >> 6); | |
859 | octa2 = (MID_TWO & *p) >> 3; | |
860 | octa3 = (LOW_TWO & *p); | |
861 | carry = 0; | |
862 | fprintf_filtered (stream, "%o", octa1); | |
863 | fprintf_filtered (stream, "%o", octa2); | |
864 | fprintf_filtered (stream, "%o", octa3); | |
865 | break; | |
866 | ||
867 | default: | |
868 | error ("Internal error in octal conversion;"); | |
869 | } | |
870 | ||
871 | cycle++; | |
872 | cycle = cycle % BITS_IN_OCTAL; | |
c906108c SS |
873 | } |
874 | } | |
875 | ||
876 | fprintf_filtered (stream, local_octal_format_suffix ()); | |
877 | } | |
878 | ||
879 | /* VALADDR points to an integer of LEN bytes. | |
880 | * Print it in decimal on stream or format it in buf. | |
881 | */ | |
882 | void | |
883 | print_decimal_chars (stream, valaddr, len) | |
884 | GDB_FILE *stream; | |
885 | unsigned char *valaddr; | |
886 | unsigned len; | |
887 | { | |
888 | #define TEN 10 | |
889 | #define TWO_TO_FOURTH 16 | |
c5aa993b | 890 | #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */ |
c906108c SS |
891 | #define CARRY_LEFT( x ) ((x) % TEN) |
892 | #define SHIFT( x ) ((x) << 4) | |
893 | #define START_P \ | |
894 | ((TARGET_BYTE_ORDER == BIG_ENDIAN) ? valaddr : valaddr + len - 1) | |
895 | #define NOT_END_P \ | |
896 | ((TARGET_BYTE_ORDER == BIG_ENDIAN) ? (p < valaddr + len) : (p >= valaddr)) | |
897 | #define NEXT_P \ | |
898 | ((TARGET_BYTE_ORDER == BIG_ENDIAN) ? p++ : p-- ) | |
899 | #define LOW_NIBBLE( x ) ( (x) & 0x00F) | |
900 | #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4) | |
901 | ||
902 | unsigned char *p; | |
903 | unsigned char *digits; | |
c5aa993b JM |
904 | int carry; |
905 | int decimal_len; | |
906 | int i, j, decimal_digits; | |
907 | int dummy; | |
908 | int flip; | |
909 | ||
c906108c SS |
910 | /* Base-ten number is less than twice as many digits |
911 | * as the base 16 number, which is 2 digits per byte. | |
912 | */ | |
913 | decimal_len = len * 2 * 2; | |
c5aa993b JM |
914 | digits = (unsigned char *) malloc (decimal_len); |
915 | if (digits == NULL) | |
916 | error ("Can't allocate memory for conversion to decimal."); | |
c906108c | 917 | |
c5aa993b JM |
918 | for (i = 0; i < decimal_len; i++) |
919 | { | |
c906108c | 920 | digits[i] = 0; |
c5aa993b | 921 | } |
c906108c SS |
922 | |
923 | fprintf_filtered (stream, local_decimal_format_prefix ()); | |
924 | ||
925 | /* Ok, we have an unknown number of bytes of data to be printed in | |
926 | * decimal. | |
927 | * | |
928 | * Given a hex number (in nibbles) as XYZ, we start by taking X and | |
929 | * decemalizing it as "x1 x2" in two decimal nibbles. Then we multiply | |
930 | * the nibbles by 16, add Y and re-decimalize. Repeat with Z. | |
931 | * | |
932 | * The trick is that "digits" holds a base-10 number, but sometimes | |
933 | * the individual digits are > 10. | |
934 | * | |
935 | * Outer loop is per nibble (hex digit) of input, from MSD end to | |
936 | * LSD end. | |
937 | */ | |
c5aa993b | 938 | decimal_digits = 0; /* Number of decimal digits so far */ |
c906108c SS |
939 | p = START_P; |
940 | flip = 0; | |
c5aa993b JM |
941 | while (NOT_END_P) |
942 | { | |
c906108c SS |
943 | /* |
944 | * Multiply current base-ten number by 16 in place. | |
945 | * Each digit was between 0 and 9, now is between | |
946 | * 0 and 144. | |
947 | */ | |
c5aa993b JM |
948 | for (j = 0; j < decimal_digits; j++) |
949 | { | |
950 | digits[j] = SHIFT (digits[j]); | |
951 | } | |
952 | ||
c906108c SS |
953 | /* Take the next nibble off the input and add it to what |
954 | * we've got in the LSB position. Bottom 'digit' is now | |
955 | * between 0 and 159. | |
956 | * | |
957 | * "flip" is used to run this loop twice for each byte. | |
958 | */ | |
c5aa993b JM |
959 | if (flip == 0) |
960 | { | |
961 | /* Take top nibble. | |
962 | */ | |
963 | digits[0] += HIGH_NIBBLE (*p); | |
964 | flip = 1; | |
965 | } | |
966 | else | |
967 | { | |
968 | /* Take low nibble and bump our pointer "p". | |
969 | */ | |
970 | digits[0] += LOW_NIBBLE (*p); | |
971 | NEXT_P; | |
972 | flip = 0; | |
973 | } | |
c906108c SS |
974 | |
975 | /* Re-decimalize. We have to do this often enough | |
976 | * that we don't overflow, but once per nibble is | |
977 | * overkill. Easier this way, though. Note that the | |
978 | * carry is often larger than 10 (e.g. max initial | |
979 | * carry out of lowest nibble is 15, could bubble all | |
980 | * the way up greater than 10). So we have to do | |
981 | * the carrying beyond the last current digit. | |
982 | */ | |
983 | carry = 0; | |
c5aa993b JM |
984 | for (j = 0; j < decimal_len - 1; j++) |
985 | { | |
986 | digits[j] += carry; | |
987 | ||
988 | /* "/" won't handle an unsigned char with | |
989 | * a value that if signed would be negative. | |
990 | * So extend to longword int via "dummy". | |
991 | */ | |
992 | dummy = digits[j]; | |
993 | carry = CARRY_OUT (dummy); | |
994 | digits[j] = CARRY_LEFT (dummy); | |
995 | ||
996 | if (j >= decimal_digits && carry == 0) | |
997 | { | |
998 | /* | |
999 | * All higher digits are 0 and we | |
1000 | * no longer have a carry. | |
1001 | * | |
1002 | * Note: "j" is 0-based, "decimal_digits" is | |
1003 | * 1-based. | |
1004 | */ | |
1005 | decimal_digits = j + 1; | |
1006 | break; | |
1007 | } | |
1008 | } | |
1009 | } | |
c906108c SS |
1010 | |
1011 | /* Ok, now "digits" is the decimal representation, with | |
1012 | * the "decimal_digits" actual digits. Print! | |
1013 | */ | |
c5aa993b JM |
1014 | for (i = decimal_digits - 1; i >= 0; i--) |
1015 | { | |
1016 | fprintf_filtered (stream, "%1d", digits[i]); | |
1017 | } | |
1018 | free (digits); | |
1019 | ||
c906108c SS |
1020 | fprintf_filtered (stream, local_decimal_format_suffix ()); |
1021 | } | |
1022 | ||
1023 | /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */ | |
1024 | ||
1025 | static void | |
1026 | print_hex_chars (stream, valaddr, len) | |
1027 | GDB_FILE *stream; | |
1028 | unsigned char *valaddr; | |
1029 | unsigned len; | |
1030 | { | |
1031 | unsigned char *p; | |
1032 | ||
1033 | /* FIXME: We should be not printing leading zeroes in most cases. */ | |
1034 | ||
1035 | fprintf_filtered (stream, local_hex_format_prefix ()); | |
1036 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
1037 | { | |
1038 | for (p = valaddr; | |
1039 | p < valaddr + len; | |
1040 | p++) | |
1041 | { | |
1042 | fprintf_filtered (stream, "%02x", *p); | |
1043 | } | |
1044 | } | |
1045 | else | |
1046 | { | |
1047 | for (p = valaddr + len - 1; | |
1048 | p >= valaddr; | |
1049 | p--) | |
1050 | { | |
1051 | fprintf_filtered (stream, "%02x", *p); | |
1052 | } | |
1053 | } | |
1054 | fprintf_filtered (stream, local_hex_format_suffix ()); | |
1055 | } | |
1056 | ||
1057 | /* Called by various <lang>_val_print routines to print elements of an | |
c5aa993b | 1058 | array in the form "<elem1>, <elem2>, <elem3>, ...". |
c906108c | 1059 | |
c5aa993b JM |
1060 | (FIXME?) Assumes array element separator is a comma, which is correct |
1061 | for all languages currently handled. | |
1062 | (FIXME?) Some languages have a notation for repeated array elements, | |
1063 | perhaps we should try to use that notation when appropriate. | |
1064 | */ | |
c906108c SS |
1065 | |
1066 | void | |
1067 | val_print_array_elements (type, valaddr, address, stream, format, deref_ref, | |
1068 | recurse, pretty, i) | |
1069 | struct type *type; | |
1070 | char *valaddr; | |
1071 | CORE_ADDR address; | |
1072 | GDB_FILE *stream; | |
1073 | int format; | |
1074 | int deref_ref; | |
1075 | int recurse; | |
1076 | enum val_prettyprint pretty; | |
1077 | unsigned int i; | |
1078 | { | |
1079 | unsigned int things_printed = 0; | |
1080 | unsigned len; | |
1081 | struct type *elttype; | |
1082 | unsigned eltlen; | |
1083 | /* Position of the array element we are examining to see | |
1084 | whether it is repeated. */ | |
1085 | unsigned int rep1; | |
1086 | /* Number of repetitions we have detected so far. */ | |
1087 | unsigned int reps; | |
c5aa993b | 1088 | |
c906108c SS |
1089 | elttype = TYPE_TARGET_TYPE (type); |
1090 | eltlen = TYPE_LENGTH (check_typedef (elttype)); | |
1091 | len = TYPE_LENGTH (type) / eltlen; | |
1092 | ||
1093 | annotate_array_section_begin (i, elttype); | |
1094 | ||
1095 | for (; i < len && things_printed < print_max; i++) | |
1096 | { | |
1097 | if (i != 0) | |
1098 | { | |
1099 | if (prettyprint_arrays) | |
1100 | { | |
1101 | fprintf_filtered (stream, ",\n"); | |
1102 | print_spaces_filtered (2 + 2 * recurse, stream); | |
1103 | } | |
1104 | else | |
1105 | { | |
1106 | fprintf_filtered (stream, ", "); | |
1107 | } | |
1108 | } | |
1109 | wrap_here (n_spaces (2 + 2 * recurse)); | |
1110 | ||
1111 | rep1 = i + 1; | |
1112 | reps = 1; | |
c5aa993b | 1113 | while ((rep1 < len) && |
c906108c SS |
1114 | !memcmp (valaddr + i * eltlen, valaddr + rep1 * eltlen, eltlen)) |
1115 | { | |
1116 | ++reps; | |
1117 | ++rep1; | |
1118 | } | |
1119 | ||
1120 | if (reps > repeat_count_threshold) | |
1121 | { | |
1122 | val_print (elttype, valaddr + i * eltlen, 0, 0, stream, format, | |
1123 | deref_ref, recurse + 1, pretty); | |
1124 | annotate_elt_rep (reps); | |
1125 | fprintf_filtered (stream, " <repeats %u times>", reps); | |
1126 | annotate_elt_rep_end (); | |
1127 | ||
1128 | i = rep1 - 1; | |
1129 | things_printed += repeat_count_threshold; | |
1130 | } | |
1131 | else | |
1132 | { | |
1133 | val_print (elttype, valaddr + i * eltlen, 0, 0, stream, format, | |
1134 | deref_ref, recurse + 1, pretty); | |
1135 | annotate_elt (); | |
1136 | things_printed++; | |
1137 | } | |
1138 | } | |
1139 | annotate_array_section_end (); | |
1140 | if (i < len) | |
1141 | { | |
1142 | fprintf_filtered (stream, "..."); | |
1143 | } | |
1144 | } | |
1145 | ||
1146 | /* Print a string from the inferior, starting at ADDR and printing up to LEN | |
c5aa993b JM |
1147 | characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing |
1148 | stops at the first null byte, otherwise printing proceeds (including null | |
1149 | bytes) until either print_max or LEN characters have been printed, | |
1150 | whichever is smaller. */ | |
c906108c SS |
1151 | |
1152 | /* FIXME: Use target_read_string. */ | |
1153 | ||
1154 | int | |
1155 | val_print_string (addr, len, width, stream) | |
c5aa993b JM |
1156 | CORE_ADDR addr; |
1157 | int len; | |
1158 | int width; | |
1159 | GDB_FILE *stream; | |
c906108c SS |
1160 | { |
1161 | int force_ellipsis = 0; /* Force ellipsis to be printed if nonzero. */ | |
1162 | int errcode; /* Errno returned from bad reads. */ | |
1163 | unsigned int fetchlimit; /* Maximum number of chars to print. */ | |
1164 | unsigned int nfetch; /* Chars to fetch / chars fetched. */ | |
1165 | unsigned int chunksize; /* Size of each fetch, in chars. */ | |
1166 | char *buffer = NULL; /* Dynamically growable fetch buffer. */ | |
1167 | char *bufptr; /* Pointer to next available byte in buffer. */ | |
1168 | char *limit; /* First location past end of fetch buffer. */ | |
c5aa993b | 1169 | struct cleanup *old_chain = NULL; /* Top of the old cleanup chain. */ |
c906108c SS |
1170 | int found_nul; /* Non-zero if we found the nul char */ |
1171 | ||
1172 | /* First we need to figure out the limit on the number of characters we are | |
1173 | going to attempt to fetch and print. This is actually pretty simple. If | |
1174 | LEN >= zero, then the limit is the minimum of LEN and print_max. If | |
1175 | LEN is -1, then the limit is print_max. This is true regardless of | |
1176 | whether print_max is zero, UINT_MAX (unlimited), or something in between, | |
1177 | because finding the null byte (or available memory) is what actually | |
1178 | limits the fetch. */ | |
1179 | ||
1180 | fetchlimit = (len == -1 ? print_max : min (len, print_max)); | |
1181 | ||
1182 | /* Now decide how large of chunks to try to read in one operation. This | |
1183 | is also pretty simple. If LEN >= zero, then we want fetchlimit chars, | |
1184 | so we might as well read them all in one operation. If LEN is -1, we | |
1185 | are looking for a null terminator to end the fetching, so we might as | |
1186 | well read in blocks that are large enough to be efficient, but not so | |
1187 | large as to be slow if fetchlimit happens to be large. So we choose the | |
1188 | minimum of 8 and fetchlimit. We used to use 200 instead of 8 but | |
1189 | 200 is way too big for remote debugging over a serial line. */ | |
1190 | ||
1191 | chunksize = (len == -1 ? min (8, fetchlimit) : fetchlimit); | |
1192 | ||
1193 | /* Loop until we either have all the characters to print, or we encounter | |
1194 | some error, such as bumping into the end of the address space. */ | |
1195 | ||
1196 | found_nul = 0; | |
1197 | old_chain = make_cleanup (null_cleanup, 0); | |
1198 | ||
1199 | if (len > 0) | |
1200 | { | |
1201 | buffer = (char *) xmalloc (len * width); | |
1202 | bufptr = buffer; | |
1203 | old_chain = make_cleanup (free, buffer); | |
1204 | ||
1205 | nfetch = target_read_memory_partial (addr, bufptr, len * width, &errcode) | |
1206 | / width; | |
1207 | addr += nfetch * width; | |
1208 | bufptr += nfetch * width; | |
1209 | } | |
1210 | else if (len == -1) | |
1211 | { | |
1212 | unsigned long bufsize = 0; | |
1213 | do | |
1214 | { | |
1215 | QUIT; | |
1216 | nfetch = min (chunksize, fetchlimit - bufsize); | |
1217 | ||
1218 | if (buffer == NULL) | |
1219 | buffer = (char *) xmalloc (nfetch * width); | |
1220 | else | |
1221 | { | |
1222 | discard_cleanups (old_chain); | |
1223 | buffer = (char *) xrealloc (buffer, (nfetch + bufsize) * width); | |
1224 | } | |
1225 | ||
1226 | old_chain = make_cleanup (free, buffer); | |
1227 | bufptr = buffer + bufsize * width; | |
1228 | bufsize += nfetch; | |
1229 | ||
1230 | /* Read as much as we can. */ | |
1231 | nfetch = target_read_memory_partial (addr, bufptr, nfetch * width, &errcode) | |
c5aa993b | 1232 | / width; |
c906108c SS |
1233 | |
1234 | /* Scan this chunk for the null byte that terminates the string | |
1235 | to print. If found, we don't need to fetch any more. Note | |
1236 | that bufptr is explicitly left pointing at the next character | |
1237 | after the null byte, or at the next character after the end of | |
1238 | the buffer. */ | |
1239 | ||
1240 | limit = bufptr + nfetch * width; | |
1241 | while (bufptr < limit) | |
1242 | { | |
1243 | unsigned long c; | |
1244 | ||
1245 | c = extract_unsigned_integer (bufptr, width); | |
1246 | addr += width; | |
1247 | bufptr += width; | |
1248 | if (c == 0) | |
1249 | { | |
1250 | /* We don't care about any error which happened after | |
1251 | the NULL terminator. */ | |
1252 | errcode = 0; | |
1253 | found_nul = 1; | |
1254 | break; | |
1255 | } | |
1256 | } | |
1257 | } | |
c5aa993b JM |
1258 | while (errcode == 0 /* no error */ |
1259 | && bufptr - buffer < fetchlimit * width /* no overrun */ | |
1260 | && !found_nul); /* haven't found nul yet */ | |
c906108c SS |
1261 | } |
1262 | else | |
1263 | { /* length of string is really 0! */ | |
1264 | buffer = bufptr = NULL; | |
1265 | errcode = 0; | |
1266 | } | |
1267 | ||
1268 | /* bufptr and addr now point immediately beyond the last byte which we | |
1269 | consider part of the string (including a '\0' which ends the string). */ | |
1270 | ||
1271 | /* We now have either successfully filled the buffer to fetchlimit, or | |
1272 | terminated early due to an error or finding a null char when LEN is -1. */ | |
1273 | ||
1274 | if (len == -1 && !found_nul) | |
1275 | { | |
1276 | char *peekbuf; | |
1277 | ||
1278 | /* We didn't find a null terminator we were looking for. Attempt | |
c5aa993b JM |
1279 | to peek at the next character. If not successful, or it is not |
1280 | a null byte, then force ellipsis to be printed. */ | |
c906108c SS |
1281 | |
1282 | peekbuf = (char *) alloca (width); | |
1283 | ||
1284 | if (target_read_memory (addr, peekbuf, width) == 0 | |
1285 | && extract_unsigned_integer (peekbuf, width) != 0) | |
1286 | force_ellipsis = 1; | |
1287 | } | |
c5aa993b | 1288 | else if ((len >= 0 && errcode != 0) || (len > (bufptr - buffer) / width)) |
c906108c SS |
1289 | { |
1290 | /* Getting an error when we have a requested length, or fetching less | |
c5aa993b JM |
1291 | than the number of characters actually requested, always make us |
1292 | print ellipsis. */ | |
c906108c SS |
1293 | force_ellipsis = 1; |
1294 | } | |
1295 | ||
1296 | QUIT; | |
1297 | ||
1298 | /* If we get an error before fetching anything, don't print a string. | |
1299 | But if we fetch something and then get an error, print the string | |
1300 | and then the error message. */ | |
1301 | if (errcode == 0 || bufptr > buffer) | |
1302 | { | |
1303 | if (addressprint) | |
1304 | { | |
1305 | fputs_filtered (" ", stream); | |
1306 | } | |
c5aa993b | 1307 | LA_PRINT_STRING (stream, buffer, (bufptr - buffer) / width, width, force_ellipsis); |
c906108c SS |
1308 | } |
1309 | ||
1310 | if (errcode != 0) | |
1311 | { | |
1312 | if (errcode == EIO) | |
1313 | { | |
1314 | fprintf_filtered (stream, " <Address "); | |
1315 | print_address_numeric (addr, 1, stream); | |
1316 | fprintf_filtered (stream, " out of bounds>"); | |
1317 | } | |
1318 | else | |
1319 | { | |
1320 | fprintf_filtered (stream, " <Error reading address "); | |
1321 | print_address_numeric (addr, 1, stream); | |
1322 | fprintf_filtered (stream, ": %s>", safe_strerror (errcode)); | |
1323 | } | |
1324 | } | |
1325 | gdb_flush (stream); | |
1326 | do_cleanups (old_chain); | |
c5aa993b | 1327 | return ((bufptr - buffer) / width); |
c906108c | 1328 | } |
c906108c | 1329 | \f |
c5aa993b | 1330 | |
c906108c SS |
1331 | /* Validate an input or output radix setting, and make sure the user |
1332 | knows what they really did here. Radix setting is confusing, e.g. | |
1333 | setting the input radix to "10" never changes it! */ | |
1334 | ||
1335 | /* ARGSUSED */ | |
1336 | static void | |
1337 | set_input_radix (args, from_tty, c) | |
1338 | char *args; | |
1339 | int from_tty; | |
1340 | struct cmd_list_element *c; | |
1341 | { | |
c5aa993b | 1342 | set_input_radix_1 (from_tty, *(unsigned *) c->var); |
c906108c SS |
1343 | } |
1344 | ||
1345 | /* ARGSUSED */ | |
1346 | static void | |
1347 | set_input_radix_1 (from_tty, radix) | |
1348 | int from_tty; | |
1349 | unsigned radix; | |
1350 | { | |
1351 | /* We don't currently disallow any input radix except 0 or 1, which don't | |
1352 | make any mathematical sense. In theory, we can deal with any input | |
1353 | radix greater than 1, even if we don't have unique digits for every | |
1354 | value from 0 to radix-1, but in practice we lose on large radix values. | |
1355 | We should either fix the lossage or restrict the radix range more. | |
1356 | (FIXME). */ | |
1357 | ||
1358 | if (radix < 2) | |
1359 | { | |
1360 | error ("Nonsense input radix ``decimal %u''; input radix unchanged.", | |
1361 | radix); | |
1362 | } | |
1363 | input_radix = radix; | |
1364 | if (from_tty) | |
1365 | { | |
1366 | printf_filtered ("Input radix now set to decimal %u, hex %x, octal %o.\n", | |
1367 | radix, radix, radix); | |
1368 | } | |
1369 | } | |
1370 | ||
1371 | /* ARGSUSED */ | |
1372 | static void | |
1373 | set_output_radix (args, from_tty, c) | |
1374 | char *args; | |
1375 | int from_tty; | |
1376 | struct cmd_list_element *c; | |
1377 | { | |
c5aa993b | 1378 | set_output_radix_1 (from_tty, *(unsigned *) c->var); |
c906108c SS |
1379 | } |
1380 | ||
1381 | static void | |
1382 | set_output_radix_1 (from_tty, radix) | |
1383 | int from_tty; | |
1384 | unsigned radix; | |
1385 | { | |
1386 | /* Validate the radix and disallow ones that we aren't prepared to | |
1387 | handle correctly, leaving the radix unchanged. */ | |
1388 | switch (radix) | |
1389 | { | |
1390 | case 16: | |
c5aa993b | 1391 | output_format = 'x'; /* hex */ |
c906108c SS |
1392 | break; |
1393 | case 10: | |
c5aa993b | 1394 | output_format = 0; /* decimal */ |
c906108c SS |
1395 | break; |
1396 | case 8: | |
c5aa993b | 1397 | output_format = 'o'; /* octal */ |
c906108c SS |
1398 | break; |
1399 | default: | |
1400 | error ("Unsupported output radix ``decimal %u''; output radix unchanged.", | |
1401 | radix); | |
1402 | } | |
1403 | output_radix = radix; | |
1404 | if (from_tty) | |
1405 | { | |
1406 | printf_filtered ("Output radix now set to decimal %u, hex %x, octal %o.\n", | |
1407 | radix, radix, radix); | |
1408 | } | |
1409 | } | |
1410 | ||
1411 | /* Set both the input and output radix at once. Try to set the output radix | |
1412 | first, since it has the most restrictive range. An radix that is valid as | |
1413 | an output radix is also valid as an input radix. | |
1414 | ||
1415 | It may be useful to have an unusual input radix. If the user wishes to | |
1416 | set an input radix that is not valid as an output radix, he needs to use | |
1417 | the 'set input-radix' command. */ | |
1418 | ||
1419 | static void | |
1420 | set_radix (arg, from_tty) | |
1421 | char *arg; | |
1422 | int from_tty; | |
1423 | { | |
1424 | unsigned radix; | |
1425 | ||
1426 | radix = (arg == NULL) ? 10 : parse_and_eval_address (arg); | |
1427 | set_output_radix_1 (0, radix); | |
1428 | set_input_radix_1 (0, radix); | |
1429 | if (from_tty) | |
1430 | { | |
1431 | printf_filtered ("Input and output radices now set to decimal %u, hex %x, octal %o.\n", | |
1432 | radix, radix, radix); | |
1433 | } | |
1434 | } | |
1435 | ||
1436 | /* Show both the input and output radices. */ | |
1437 | ||
c5aa993b | 1438 | /*ARGSUSED */ |
c906108c SS |
1439 | static void |
1440 | show_radix (arg, from_tty) | |
1441 | char *arg; | |
1442 | int from_tty; | |
1443 | { | |
1444 | if (from_tty) | |
1445 | { | |
1446 | if (input_radix == output_radix) | |
1447 | { | |
1448 | printf_filtered ("Input and output radices set to decimal %u, hex %x, octal %o.\n", | |
1449 | input_radix, input_radix, input_radix); | |
1450 | } | |
1451 | else | |
1452 | { | |
1453 | printf_filtered ("Input radix set to decimal %u, hex %x, octal %o.\n", | |
1454 | input_radix, input_radix, input_radix); | |
1455 | printf_filtered ("Output radix set to decimal %u, hex %x, octal %o.\n", | |
1456 | output_radix, output_radix, output_radix); | |
1457 | } | |
1458 | } | |
1459 | } | |
c906108c | 1460 | \f |
c5aa993b JM |
1461 | |
1462 | /*ARGSUSED */ | |
c906108c SS |
1463 | static void |
1464 | set_print (arg, from_tty) | |
1465 | char *arg; | |
1466 | int from_tty; | |
1467 | { | |
1468 | printf_unfiltered ( | |
c5aa993b | 1469 | "\"set print\" must be followed by the name of a print subcommand.\n"); |
c906108c SS |
1470 | help_list (setprintlist, "set print ", -1, gdb_stdout); |
1471 | } | |
1472 | ||
c5aa993b | 1473 | /*ARGSUSED */ |
c906108c SS |
1474 | static void |
1475 | show_print (args, from_tty) | |
1476 | char *args; | |
1477 | int from_tty; | |
1478 | { | |
1479 | cmd_show_list (showprintlist, from_tty, ""); | |
1480 | } | |
1481 | \f | |
1482 | void | |
1483 | _initialize_valprint () | |
1484 | { | |
1485 | struct cmd_list_element *c; | |
1486 | ||
1487 | add_prefix_cmd ("print", no_class, set_print, | |
1488 | "Generic command for setting how things print.", | |
1489 | &setprintlist, "set print ", 0, &setlist); | |
c5aa993b JM |
1490 | add_alias_cmd ("p", "print", no_class, 1, &setlist); |
1491 | /* prefer set print to set prompt */ | |
c906108c SS |
1492 | add_alias_cmd ("pr", "print", no_class, 1, &setlist); |
1493 | ||
1494 | add_prefix_cmd ("print", no_class, show_print, | |
1495 | "Generic command for showing print settings.", | |
1496 | &showprintlist, "show print ", 0, &showlist); | |
c5aa993b JM |
1497 | add_alias_cmd ("p", "print", no_class, 1, &showlist); |
1498 | add_alias_cmd ("pr", "print", no_class, 1, &showlist); | |
c906108c SS |
1499 | |
1500 | add_show_from_set | |
c5aa993b | 1501 | (add_set_cmd ("elements", no_class, var_uinteger, (char *) &print_max, |
c906108c SS |
1502 | "Set limit on string chars or array elements to print.\n\ |
1503 | \"set print elements 0\" causes there to be no limit.", | |
1504 | &setprintlist), | |
1505 | &showprintlist); | |
1506 | ||
1507 | add_show_from_set | |
1508 | (add_set_cmd ("null-stop", no_class, var_boolean, | |
c5aa993b | 1509 | (char *) &stop_print_at_null, |
c906108c SS |
1510 | "Set printing of char arrays to stop at first null char.", |
1511 | &setprintlist), | |
1512 | &showprintlist); | |
1513 | ||
1514 | add_show_from_set | |
1515 | (add_set_cmd ("repeats", no_class, var_uinteger, | |
c5aa993b | 1516 | (char *) &repeat_count_threshold, |
c906108c SS |
1517 | "Set threshold for repeated print elements.\n\ |
1518 | \"set print repeats 0\" causes all elements to be individually printed.", | |
1519 | &setprintlist), | |
1520 | &showprintlist); | |
1521 | ||
1522 | add_show_from_set | |
1523 | (add_set_cmd ("pretty", class_support, var_boolean, | |
c5aa993b | 1524 | (char *) &prettyprint_structs, |
c906108c SS |
1525 | "Set prettyprinting of structures.", |
1526 | &setprintlist), | |
1527 | &showprintlist); | |
1528 | ||
1529 | add_show_from_set | |
c5aa993b | 1530 | (add_set_cmd ("union", class_support, var_boolean, (char *) &unionprint, |
c906108c SS |
1531 | "Set printing of unions interior to structures.", |
1532 | &setprintlist), | |
1533 | &showprintlist); | |
c5aa993b | 1534 | |
c906108c SS |
1535 | add_show_from_set |
1536 | (add_set_cmd ("array", class_support, var_boolean, | |
c5aa993b | 1537 | (char *) &prettyprint_arrays, |
c906108c SS |
1538 | "Set prettyprinting of arrays.", |
1539 | &setprintlist), | |
1540 | &showprintlist); | |
1541 | ||
1542 | add_show_from_set | |
c5aa993b | 1543 | (add_set_cmd ("address", class_support, var_boolean, (char *) &addressprint, |
c906108c SS |
1544 | "Set printing of addresses.", |
1545 | &setprintlist), | |
1546 | &showprintlist); | |
1547 | ||
1548 | c = add_set_cmd ("input-radix", class_support, var_uinteger, | |
c5aa993b JM |
1549 | (char *) &input_radix, |
1550 | "Set default input radix for entering numbers.", | |
1551 | &setlist); | |
c906108c SS |
1552 | add_show_from_set (c, &showlist); |
1553 | c->function.sfunc = set_input_radix; | |
1554 | ||
1555 | c = add_set_cmd ("output-radix", class_support, var_uinteger, | |
c5aa993b JM |
1556 | (char *) &output_radix, |
1557 | "Set default output radix for printing of values.", | |
1558 | &setlist); | |
c906108c SS |
1559 | add_show_from_set (c, &showlist); |
1560 | c->function.sfunc = set_output_radix; | |
1561 | ||
1562 | /* The "set radix" and "show radix" commands are special in that they are | |
1563 | like normal set and show commands but allow two normally independent | |
1564 | variables to be either set or shown with a single command. So the | |
1565 | usual add_set_cmd() and add_show_from_set() commands aren't really | |
1566 | appropriate. */ | |
1567 | add_cmd ("radix", class_support, set_radix, | |
1568 | "Set default input and output number radices.\n\ | |
1569 | Use 'set input-radix' or 'set output-radix' to independently set each.\n\ | |
1570 | Without an argument, sets both radices back to the default value of 10.", | |
1571 | &setlist); | |
1572 | add_cmd ("radix", class_support, show_radix, | |
1573 | "Show the default input and output number radices.\n\ | |
1574 | Use 'show input-radix' or 'show output-radix' to independently show each.", | |
1575 | &showlist); | |
1576 | ||
1577 | /* Give people the defaults which they are used to. */ | |
1578 | prettyprint_structs = 0; | |
1579 | prettyprint_arrays = 0; | |
1580 | unionprint = 1; | |
1581 | addressprint = 1; | |
1582 | print_max = PRINT_MAX_DEFAULT; | |
1583 | } |