1 /* Support for printing Java values for GDB, the GNU debugger.
2 Copyright 1997, 1998, 1999 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
23 #include "expression.h"
32 java_value_print (val, stream, format, pretty)
36 enum val_prettyprint pretty;
43 type = VALUE_TYPE (val);
44 address = VALUE_ADDRESS (val) + VALUE_OFFSET (val);
46 if (is_object_type (type))
50 /* Get the run-time type, and cast the object into that */
52 obj_addr = unpack_pointer (type, VALUE_CONTENTS (val));
56 type = type_from_class (java_class_from_object (val));
57 type = lookup_pointer_type (type);
59 val = value_at (type, address, NULL);
63 if (TYPE_CODE (type) == TYPE_CODE_PTR && ! value_logical_not (val))
64 type_print (TYPE_TARGET_TYPE (type), "", stream, -1);
66 name = TYPE_TAG_NAME (type);
67 if (TYPE_CODE (type) == TYPE_CODE_STRUCT && name != NULL
68 && (i = strlen (name), name[i-1] == ']'))
72 unsigned int things_printed = 0;
74 struct type *el_type = java_primitive_type_from_name (name, i - 2);
77 read_memory (address + JAVA_OBJECT_SIZE, buf4, 4);
79 length = (long) extract_signed_integer (buf4, 4);
80 fprintf_filtered (stream, "{length: %ld", length);
84 CORE_ADDR element, next_element;
86 address += JAVA_OBJECT_SIZE + 4; /* Skip object header and length. */
88 while (i < length && things_printed < print_max)
90 char buf[TARGET_PTR_BIT / HOST_CHAR_BIT];
92 fputs_filtered (", ", stream);
93 wrap_here (n_spaces (2));
96 element = next_element;
99 read_memory (address, buf, sizeof(buf));
100 address += TARGET_PTR_BIT / HOST_CHAR_BIT;
101 element = extract_address (buf, sizeof(buf));
104 for (reps = 1; i + reps < length; reps++)
106 read_memory (address, buf, sizeof(buf));
107 address += TARGET_PTR_BIT / HOST_CHAR_BIT;
108 next_element = extract_address (buf, sizeof(buf));
109 if (next_element != element)
114 fprintf_filtered (stream, "%d: ", i);
116 fprintf_filtered (stream, "%d..%d: ", i, i + reps - 1);
119 fprintf_filtered (stream, "null");
121 fprintf_filtered (stream, "@%x", element);
129 value_ptr v = allocate_value (el_type);
130 value_ptr next_v = allocate_value (el_type);
132 VALUE_ADDRESS (v) = address + JAVA_OBJECT_SIZE + 4;
133 VALUE_ADDRESS (next_v) = VALUE_ADDRESS (v);
135 while (i < length && things_printed < print_max)
137 fputs_filtered (", ", stream);
138 wrap_here (n_spaces (2));
151 VALUE_OFFSET (v) = 0;
154 VALUE_OFFSET (next_v) = VALUE_OFFSET (v);
156 for (reps = 1; i + reps < length; reps++)
158 VALUE_LAZY (next_v) = 1;
159 VALUE_OFFSET (next_v) += TYPE_LENGTH (el_type);
160 if (memcmp (VALUE_CONTENTS (v), VALUE_CONTENTS (next_v),
161 TYPE_LENGTH (el_type)) != 0)
166 fprintf_filtered (stream, "%d: ", i);
168 fprintf_filtered (stream, "%d..%d: ", i, i + reps - 1);
170 val_print (VALUE_TYPE (v), VALUE_CONTENTS (v), 0, 0,
171 stream, format, 2, 1, pretty);
179 fprintf_filtered (stream, "...");
181 fprintf_filtered (stream, "}");
186 /* If it's type String, print it */
188 if (TYPE_CODE (type) == TYPE_CODE_PTR
189 && TYPE_TARGET_TYPE (type)
190 && TYPE_NAME (TYPE_TARGET_TYPE (type))
191 && strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "java.lang.String") == 0
192 && (format == 0 || format == 's')
197 value_ptr boffset_val;
198 unsigned long boffset;
203 mark = value_mark (); /* Remember start of new values */
205 data_val = value_struct_elt (&val, NULL, "data", NULL, NULL);
206 data = value_as_pointer (data_val);
208 boffset_val = value_struct_elt (&val, NULL, "boffset", NULL, NULL);
209 boffset = value_as_pointer (boffset_val);
211 count_val = value_struct_elt (&val, NULL, "count", NULL, NULL);
212 count = value_as_pointer (count_val);
214 value_free_to_mark (mark); /* Release unnecessary values */
216 val_print_string (data + boffset, count, 2, stream);
221 return (val_print (type, VALUE_CONTENTS (val), 0, address,
222 stream, format, 1, 0, pretty));
225 /* TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the
226 same meanings as in cp_print_value and c_val_print.
228 DONT_PRINT is an array of baseclass types that we
229 should not print, or zero if called from top level. */
232 java_print_value_fields (type, valaddr, address, stream,
233 format, recurse, pretty)
240 enum val_prettyprint pretty;
242 int i, len, n_baseclasses;
244 CHECK_TYPEDEF (type);
246 fprintf_filtered (stream, "{");
247 len = TYPE_NFIELDS (type);
248 n_baseclasses = TYPE_N_BASECLASSES (type);
250 if (n_baseclasses > 0)
252 int i, n_baseclasses = TYPE_N_BASECLASSES (type);
254 for (i = 0; i < n_baseclasses; i++)
257 struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
258 char *basename = TYPE_NAME (baseclass);
261 if (BASETYPE_VIA_VIRTUAL (type, i))
264 if (basename != NULL && strcmp (basename, "java.lang.Object") == 0)
271 fprintf_filtered (stream, "\n");
272 print_spaces_filtered (2 * (recurse+1), stream);
274 fputs_filtered ("<", stream);
275 /* Not sure what the best notation is in the case where there is no
277 fputs_filtered (basename ? basename : "", stream);
278 fputs_filtered ("> = ", stream);
280 base_valaddr = valaddr;
282 java_print_value_fields (baseclass, base_valaddr, address + boffset,
283 stream, format, recurse+1, pretty);
284 fputs_filtered (", ", stream);
292 if (!len && n_baseclasses == 1)
293 fprintf_filtered (stream, "<No data fields>");
296 extern int inspect_it;
299 for (i = n_baseclasses; i < len; i++)
301 /* If requested, skip printing of static fields. */
302 if (TYPE_FIELD_STATIC (type, i))
304 char *name = TYPE_FIELD_NAME (type, i);
305 if (!static_field_print)
307 if (name != NULL && strcmp (name, "class") == 0)
311 fprintf_filtered (stream, ", ");
312 else if (n_baseclasses > 0)
316 fprintf_filtered (stream, "\n");
317 print_spaces_filtered (2 + 2 * recurse, stream);
318 fputs_filtered ("members of ", stream);
319 fputs_filtered (type_name_no_tag (type), stream);
320 fputs_filtered (": ", stream);
327 fprintf_filtered (stream, "\n");
328 print_spaces_filtered (2 + 2 * recurse, stream);
332 wrap_here (n_spaces (2 + 2 * recurse));
336 if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR)
337 fputs_filtered ("\"( ptr \"", stream);
339 fputs_filtered ("\"( nodef \"", stream);
340 if (TYPE_FIELD_STATIC (type, i))
341 fputs_filtered ("static ", stream);
342 fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
344 DMGL_PARAMS | DMGL_ANSI);
345 fputs_filtered ("\" \"", stream);
346 fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
348 DMGL_PARAMS | DMGL_ANSI);
349 fputs_filtered ("\") \"", stream);
353 annotate_field_begin (TYPE_FIELD_TYPE (type, i));
355 if (TYPE_FIELD_STATIC (type, i))
356 fputs_filtered ("static ", stream);
357 fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
359 DMGL_PARAMS | DMGL_ANSI);
360 annotate_field_name_end ();
361 fputs_filtered (": ", stream);
362 annotate_field_value ();
365 if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i))
369 /* Bitfields require special handling, especially due to byte
371 if (TYPE_FIELD_IGNORE (type, i))
373 fputs_filtered ("<optimized out or zero length>", stream);
377 v = value_from_longest (TYPE_FIELD_TYPE (type, i),
378 unpack_field_as_long (type, valaddr, i));
380 val_print (TYPE_FIELD_TYPE(type, i), VALUE_CONTENTS (v), 0,
381 0, stream, format, 0, recurse + 1, pretty);
386 if (TYPE_FIELD_IGNORE (type, i))
388 fputs_filtered ("<optimized out or zero length>", stream);
390 else if (TYPE_FIELD_STATIC (type, i))
392 value_ptr v = value_static_field (type, i);
394 fputs_filtered ("<optimized out>", stream);
397 struct type *t = check_typedef (VALUE_TYPE (v));
398 if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
400 val_print (VALUE_TYPE (v),
401 VALUE_CONTENTS (v), 0, VALUE_ADDRESS (v),
402 stream, format, 0, recurse+1, pretty);
407 val_print (TYPE_FIELD_TYPE (type, i),
408 valaddr + TYPE_FIELD_BITPOS (type, i) / 8, 0,
409 address + TYPE_FIELD_BITPOS (type, i) / 8,
410 stream, format, 0, recurse + 1, pretty);
413 annotate_field_end ();
418 fprintf_filtered (stream, "\n");
419 print_spaces_filtered (2 * recurse, stream);
422 fprintf_filtered (stream, "}");
425 /* Print data of type TYPE located at VALADDR (within GDB), which came from
426 the inferior at address ADDRESS, onto stdio stream STREAM according to
427 FORMAT (a letter or 0 for natural format). The data at VALADDR is in
430 If the data are a string pointer, returns the number of string characters
433 If DEREF_REF is nonzero, then dereference references, otherwise just print
436 The PRETTY parameter controls prettyprinting. */
439 java_val_print (type, valaddr, embedded_offset, address, stream, format,
440 deref_ref, recurse, pretty)
448 enum val_prettyprint pretty;
450 register unsigned int i = 0; /* Number of characters printed */
451 struct type *target_type;
454 CHECK_TYPEDEF (type);
455 switch (TYPE_CODE (type))
458 if (format && format != 's')
460 print_scalar_formatted (valaddr, type, format, 0, stream);
464 if (vtblprint && cp_is_vtbl_ptr_type(type))
466 /* Print the unmangled name if desired. */
467 /* Print vtable entry - we only get here if we ARE using
468 -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */
469 print_address_demangle(extract_address (valaddr, TYPE_LENGTH (type)),
474 addr = unpack_pointer (type, valaddr);
477 fputs_filtered ("null", stream);
480 target_type = check_typedef (TYPE_TARGET_TYPE (type));
482 if (TYPE_CODE (target_type) == TYPE_CODE_FUNC)
484 /* Try to print what function it points to. */
485 print_address_demangle (addr, stream, demangle);
486 /* Return value is irrelevant except for string pointers. */
490 if (addressprint && format != 's')
492 fputs_filtered ("@", stream);
493 print_longest (stream, 'x', 0, (ULONGEST) addr);
499 format = format ? format : output_format;
501 print_scalar_formatted (valaddr, type, format, 0, stream);
503 LA_PRINT_CHAR ((int) unpack_long (type, valaddr), stream);
507 /* Can't just call c_val_print because that print bytes as C chars. */
508 format = format ? format : output_format;
510 print_scalar_formatted (valaddr, type, format, 0, stream);
512 val_print_type_code_int (type, valaddr, stream);
515 case TYPE_CODE_STRUCT:
516 java_print_value_fields (type, valaddr, address, stream, format,
521 return c_val_print (type, valaddr, embedded_offset, address, stream,
522 format, deref_ref, recurse, pretty);