1 /* Support for printing Chill values for GDB, the GNU debugger.
2 Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994
3 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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, Boston, MA 02111-1307, USA. */
26 #include "expression.h"
30 #include "c-lang.h" /* For c_val_print */
31 #include "typeprint.h"
36 chill_print_value_fields PARAMS ((struct type *, char *, GDB_FILE *, int, int,
37 enum val_prettyprint, struct type **));
40 chill_print_type_scalar PARAMS ((struct type *, LONGEST, GDB_FILE *));
43 chill_val_print_array_elements PARAMS ((struct type *, char *, CORE_ADDR, GDB_FILE *,
44 int, int, int, enum val_prettyprint));
47 /* Print integral scalar data VAL, of type TYPE, onto stdio stream STREAM.
48 Used to print data from type structures in a specified type. For example,
49 array bounds may be characters or booleans in some languages, and this
50 allows the ranges to be printed in their "natural" form rather than as
51 decimal integer values. */
54 chill_print_type_scalar (type, val, stream)
59 switch (TYPE_CODE (type))
62 if (TYPE_TARGET_TYPE (type))
64 chill_print_type_scalar (TYPE_TARGET_TYPE (type), val, stream);
71 case TYPE_CODE_STRUCT:
79 case TYPE_CODE_STRING:
80 case TYPE_CODE_BITSTRING:
82 case TYPE_CODE_MEMBER:
83 case TYPE_CODE_METHOD:
87 case TYPE_CODE_COMPLEX:
88 case TYPE_CODE_TYPEDEF:
92 print_type_scalar (type, val, stream);
95 /* Print the elements of an array.
96 Similar to val_print_array_elements, but prints
97 element indexes (in Chill syntax). */
100 chill_val_print_array_elements (type, valaddr, address, stream,
101 format, deref_ref, recurse, pretty)
109 enum val_prettyprint pretty;
112 unsigned int things_printed = 0;
114 struct type *elttype;
115 struct type *range_type = TYPE_FIELD_TYPE (type, 0);
116 struct type *index_type = TYPE_TARGET_TYPE (range_type);
118 /* Position of the array element we are examining to see
119 whether it is repeated. */
121 /* Number of repetitions we have detected so far. */
123 LONGEST low_bound = TYPE_FIELD_BITPOS (range_type, 0);
125 elttype = check_typedef (TYPE_TARGET_TYPE (type));
126 eltlen = TYPE_LENGTH (elttype);
127 len = TYPE_LENGTH (type) / eltlen;
129 annotate_array_section_begin (i, elttype);
131 for (; i < len && things_printed < print_max; i++)
135 if (prettyprint_arrays)
137 fprintf_filtered (stream, ",\n");
138 print_spaces_filtered (2 + 2 * recurse, stream);
142 fprintf_filtered (stream, ", ");
145 wrap_here (n_spaces (2 + 2 * recurse));
149 while ((rep1 < len) &&
150 !memcmp (valaddr + i * eltlen, valaddr + rep1 * eltlen, eltlen))
156 fputs_filtered ("(", stream);
157 chill_print_type_scalar (index_type, low_bound + i, stream);
160 fputs_filtered (":", stream);
161 chill_print_type_scalar (index_type, low_bound + i + reps - 1,
163 fputs_filtered ("): ", stream);
164 val_print (elttype, valaddr + i * eltlen, 0, stream, format,
165 deref_ref, recurse + 1, pretty);
172 fputs_filtered ("): ", stream);
173 val_print (elttype, valaddr + i * eltlen, 0, stream, format,
174 deref_ref, recurse + 1, pretty);
179 annotate_array_section_end ();
182 fprintf_filtered (stream, "...");
186 /* Print data of type TYPE located at VALADDR (within GDB), which came from
187 the inferior at address ADDRESS, onto stdio stream STREAM according to
188 FORMAT (a letter or 0 for natural format). The data at VALADDR is in
191 If the data are a string pointer, returns the number of string characters
194 If DEREF_REF is nonzero, then dereference references, otherwise just print
197 The PRETTY parameter controls prettyprinting. */
200 chill_val_print (type, valaddr, address, stream, format, deref_ref, recurse,
209 enum val_prettyprint pretty;
212 unsigned int i = 0; /* Number of characters printed. */
213 struct type *elttype;
216 CHECK_TYPEDEF (type);
218 switch (TYPE_CODE (type))
220 case TYPE_CODE_ARRAY:
221 if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
223 if (prettyprint_arrays)
225 print_spaces_filtered (2 + 2 * recurse, stream);
227 fprintf_filtered (stream, "[");
228 chill_val_print_array_elements (type, valaddr, address, stream,
229 format, deref_ref, recurse, pretty);
230 fprintf_filtered (stream, "]");
234 error ("unimplemented in chill_val_print; unspecified array length");
239 format = format ? format : output_format;
242 print_scalar_formatted (valaddr, type, format, 0, stream);
246 val_print_type_code_int (type, valaddr, stream);
251 format = format ? format : output_format;
254 print_scalar_formatted (valaddr, type, format, 0, stream);
258 LA_PRINT_CHAR ((unsigned char) unpack_long (type, valaddr),
266 print_scalar_formatted (valaddr, type, format, 0, stream);
270 print_floating (valaddr, type, stream);
275 format = format ? format : output_format;
278 print_scalar_formatted (valaddr, type, format, 0, stream);
282 /* FIXME: Why is this using builtin_type_chill_bool not type? */
283 val = unpack_long (builtin_type_chill_bool, valaddr);
284 fprintf_filtered (stream, val ? "TRUE" : "FALSE");
288 case TYPE_CODE_UNDEF:
289 /* This happens (without TYPE_FLAG_STUB set) on systems which don't use
290 dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
291 and no complete type for struct foo in that file. */
292 fprintf_filtered (stream, "<incomplete type>");
296 if (format && format != 's')
298 print_scalar_formatted (valaddr, type, format, 0, stream);
301 addr = unpack_pointer (type, valaddr);
302 elttype = check_typedef (TYPE_TARGET_TYPE (type));
304 /* We assume a NULL pointer is all zeros ... */
307 fputs_filtered ("NULL", stream);
311 if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
313 /* Try to print what function it points to. */
314 print_address_demangle (addr, stream, demangle);
315 /* Return value is irrelevant except for string pointers. */
318 if (addressprint && format != 's')
320 print_address_numeric (addr, 1, stream);
323 /* For a pointer to char or unsigned char, also print the string
324 pointed to, unless pointer is null. */
325 if (TYPE_LENGTH (elttype) == 1
326 && TYPE_CODE (elttype) == TYPE_CODE_CHAR
327 && (format == 0 || format == 's')
329 && /* If print_max is UINT_MAX, the alloca below will fail.
330 In that case don't try to print the string. */
331 print_max < UINT_MAX)
333 i = val_print_string (addr, 0, stream);
335 /* Return number of characters printed, plus one for the
336 terminating null if we have "reached the end". */
337 return (i + (print_max && i != print_max));
340 case TYPE_CODE_STRING:
341 i = TYPE_LENGTH (type);
342 LA_PRINT_STRING (stream, valaddr, i, 0);
343 /* Return number of characters printed, plus one for the terminating
344 null if we have "reached the end". */
345 return (i + (print_max && i != print_max));
348 case TYPE_CODE_BITSTRING:
350 elttype = TYPE_INDEX_TYPE (type);
351 CHECK_TYPEDEF (elttype);
352 if (TYPE_FLAGS (elttype) & TYPE_FLAG_STUB)
354 fprintf_filtered (stream, "<incomplete type>");
359 struct type *range = elttype;
360 LONGEST low_bound, high_bound;
362 int is_bitstring = TYPE_CODE (type) == TYPE_CODE_BITSTRING;
366 fputs_filtered ("B'", stream);
368 fputs_filtered ("[", stream);
370 i = get_discrete_bounds (range, &low_bound, &high_bound);
374 fputs_filtered ("<error value>", stream);
378 for (i = low_bound; i <= high_bound; i++)
380 int element = value_bit_index (type, valaddr, i);
384 goto maybe_bad_bstring;
387 fprintf_filtered (stream, "%d", element);
391 fputs_filtered (", ", stream);
392 chill_print_type_scalar (range, (LONGEST) i, stream);
395 /* Look for a continuous range of true elements. */
396 if (i+1 <= high_bound && value_bit_index (type, valaddr, ++i))
398 int j = i; /* j is the upper bound so far of the range */
399 fputs_filtered (":", stream);
400 while (i+1 <= high_bound
401 && value_bit_index (type, valaddr, ++i))
403 chill_print_type_scalar (range, (LONGEST) j, stream);
409 fputs_filtered ("'", stream);
411 fputs_filtered ("]", stream);
415 case TYPE_CODE_STRUCT:
416 if (chill_varying_type (type))
418 struct type *inner = check_typedef (TYPE_FIELD_TYPE (type, 1));
419 long length = unpack_long (TYPE_FIELD_TYPE (type, 0), valaddr);
420 char *data_addr = valaddr + TYPE_FIELD_BITPOS (type, 1) / 8;
422 switch (TYPE_CODE (inner))
424 case TYPE_CODE_STRING:
425 if (length > TYPE_LENGTH (type))
427 fprintf_filtered (stream,
428 "<dynamic length %ld > static length %d>",
429 length, TYPE_LENGTH (type));
431 LA_PRINT_STRING (stream, data_addr, length, 0);
437 chill_print_value_fields (type, valaddr, stream, format, recurse, pretty,
444 fprintf_filtered (stream, "LOC(");
445 print_address_numeric
446 (extract_address (valaddr, TARGET_PTR_BIT / HOST_CHAR_BIT),
449 fprintf_filtered (stream, ")");
451 fputs_filtered (": ", stream);
453 /* De-reference the reference. */
456 if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_UNDEF)
458 value_ptr deref_val =
460 (TYPE_TARGET_TYPE (type),
461 unpack_pointer (lookup_pointer_type (builtin_type_void),
463 val_print (VALUE_TYPE (deref_val),
464 VALUE_CONTENTS (deref_val),
465 VALUE_ADDRESS (deref_val), stream, format,
466 deref_ref, recurse + 1, pretty);
469 fputs_filtered ("???", stream);
474 c_val_print (type, valaddr, address, stream, format,
475 deref_ref, recurse, pretty);
478 case TYPE_CODE_RANGE:
479 if (TYPE_TARGET_TYPE (type))
480 chill_val_print (TYPE_TARGET_TYPE (type), valaddr, address, stream,
481 format, deref_ref, recurse, pretty);
484 case TYPE_CODE_MEMBER:
485 case TYPE_CODE_UNION:
488 case TYPE_CODE_ERROR:
490 /* Let's defer printing to the C printer, rather than
491 print an error message. FIXME! */
492 c_val_print (type, valaddr, address, stream, format,
493 deref_ref, recurse, pretty);
499 /* Mutually recursive subroutines of cplus_print_value and c_val_print to
500 print out a structure's fields: cp_print_value_fields and cplus_print_value.
502 TYPE, VALADDR, STREAM, RECURSE, and PRETTY have the
503 same meanings as in cplus_print_value and c_val_print.
505 DONT_PRINT is an array of baseclass types that we
506 should not print, or zero if called from top level. */
509 chill_print_value_fields (type, valaddr, stream, format, recurse, pretty,
516 enum val_prettyprint pretty;
517 struct type **dont_print;
522 CHECK_TYPEDEF (type);
524 fprintf_filtered (stream, "[");
525 len = TYPE_NFIELDS (type);
528 fprintf_filtered (stream, "<No data fields>");
532 for (i = 0; i < len; i++)
536 fprintf_filtered (stream, ", ");
541 fprintf_filtered (stream, "\n");
542 print_spaces_filtered (2 + 2 * recurse, stream);
546 wrap_here (n_spaces (2 + 2 * recurse));
548 fputs_filtered (".", stream);
549 fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
550 language_chill, DMGL_NO_OPTS);
551 fputs_filtered (": ", stream);
552 if (TYPE_FIELD_PACKED (type, i))
556 /* Bitfields require special handling, especially due to byte
558 v = value_from_longest (TYPE_FIELD_TYPE (type, i),
559 unpack_field_as_long (type, valaddr, i));
561 chill_val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v), 0,
562 stream, format, 0, recurse + 1, pretty);
566 chill_val_print (TYPE_FIELD_TYPE (type, i),
567 valaddr + TYPE_FIELD_BITPOS (type, i) / 8,
568 0, stream, format, 0, recurse + 1, pretty);
573 fprintf_filtered (stream, "\n");
574 print_spaces_filtered (2 * recurse, stream);
577 fprintf_filtered (stream, "]");
581 chill_value_print (val, stream, format, pretty)
585 enum val_prettyprint pretty;
587 struct type *type = VALUE_TYPE (val);
588 struct type *real_type = check_typedef (type);
590 /* If it is a pointer, indicate what it points to.
592 Print type also if it is a reference. */
594 if (TYPE_CODE (real_type) == TYPE_CODE_PTR ||
595 TYPE_CODE (real_type) == TYPE_CODE_REF)
597 char *valaddr = VALUE_CONTENTS (val);
598 CORE_ADDR addr = unpack_pointer (type, valaddr);
599 if (TYPE_CODE (type) != TYPE_CODE_PTR || addr != 0)
602 char *name = TYPE_NAME (type);
604 fputs_filtered (name, stream);
605 else if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_VOID)
606 fputs_filtered ("PTR", stream);
609 fprintf_filtered (stream, "(");
610 type_print (type, "", stream, -1);
611 fprintf_filtered (stream, ")");
613 fprintf_filtered (stream, "(");
614 i = val_print (type, valaddr, VALUE_ADDRESS (val),
615 stream, format, 1, 0, pretty);
616 fprintf_filtered (stream, ")");
620 return (val_print (type, VALUE_CONTENTS (val),
621 VALUE_ADDRESS (val), stream, format, 1, 0, pretty));