5cb21d38e1c3cfe4c025dde9c7012b217dae8f44
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
26 #include "expression.h"
30 #include "c-lang.h" /* For c_val_print */
33 chill_print_value_fields
PARAMS ((struct type
*, char *, GDB_FILE
*, int, int,
34 enum val_prettyprint
, struct type
**));
37 /* Print data of type TYPE located at VALADDR (within GDB), which came from
38 the inferior at address ADDRESS, onto stdio stream STREAM according to
39 FORMAT (a letter or 0 for natural format). The data at VALADDR is in
42 If the data are a string pointer, returns the number of string characters
45 If DEREF_REF is nonzero, then dereference references, otherwise just print
48 The PRETTY parameter controls prettyprinting. */
51 chill_val_print (type
, valaddr
, address
, stream
, format
, deref_ref
, recurse
,
60 enum val_prettyprint pretty
;
63 unsigned int i
= 0; /* Number of characters printed. */
67 switch (TYPE_CODE (type
))
70 if (TYPE_LENGTH (type
) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type
)) > 0)
72 if (prettyprint_arrays
)
74 print_spaces_filtered (2 + 2 * recurse
, stream
);
76 fprintf_filtered (stream
, "[");
77 val_print_array_elements (type
, valaddr
, address
, stream
, format
,
78 deref_ref
, recurse
, pretty
, 0);
79 fprintf_filtered (stream
, "]");
83 error ("unimplemented in chill_val_print; unspecified array length");
88 format
= format
? format
: output_format
;
91 print_scalar_formatted (valaddr
, type
, format
, 0, stream
);
95 val_print_type_code_int (type
, valaddr
, stream
);
100 format
= format
? format
: output_format
;
103 print_scalar_formatted (valaddr
, type
, format
, 0, stream
);
107 LA_PRINT_CHAR ((unsigned char) unpack_long (type
, valaddr
),
115 print_scalar_formatted (valaddr
, type
, format
, 0, stream
);
119 print_floating (valaddr
, type
, stream
);
124 format
= format
? format
: output_format
;
127 print_scalar_formatted (valaddr
, type
, format
, 0, stream
);
131 val
= unpack_long (builtin_type_chill_bool
, valaddr
);
132 fprintf_filtered (stream
, val
? "TRUE" : "FALSE");
136 case TYPE_CODE_UNDEF
:
137 /* This happens (without TYPE_FLAG_STUB set) on systems which don't use
138 dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
139 and no complete type for struct foo in that file. */
140 fprintf_filtered (stream
, "<incomplete type>");
144 if (format
&& format
!= 's')
146 print_scalar_formatted (valaddr
, type
, format
, 0, stream
);
149 addr
= unpack_pointer (type
, valaddr
);
150 elttype
= TYPE_TARGET_TYPE (type
);
152 if (TYPE_CODE (elttype
) == TYPE_CODE_FUNC
)
154 /* Try to print what function it points to. */
155 print_address_demangle (addr
, stream
, demangle
);
156 /* Return value is irrelevant except for string pointers. */
159 if (addressprint
&& format
!= 's')
161 fprintf_filtered (stream
, "H'%lx", (unsigned long) addr
);
164 /* For a pointer to char or unsigned char, also print the string
165 pointed to, unless pointer is null. */
166 if (TYPE_LENGTH (elttype
) == 1
167 && TYPE_CODE (elttype
) == TYPE_CODE_CHAR
168 && (format
== 0 || format
== 's')
170 && /* If print_max is UINT_MAX, the alloca below will fail.
171 In that case don't try to print the string. */
172 print_max
< UINT_MAX
)
174 i
= val_print_string (addr
, 0, stream
);
176 /* Return number of characters printed, plus one for the
177 terminating null if we have "reached the end". */
178 return (i
+ (print_max
&& i
!= print_max
));
181 case TYPE_CODE_STRING
:
182 if (format
&& format
!= 's')
184 print_scalar_formatted (valaddr
, type
, format
, 0, stream
);
187 i
= TYPE_LENGTH (type
);
188 LA_PRINT_STRING (stream
, valaddr
, i
, 0);
189 /* Return number of characters printed, plus one for the terminating
190 null if we have "reached the end". */
191 return (i
+ (print_max
&& i
!= print_max
));
194 case TYPE_CODE_BITSTRING
:
197 struct type
*range
= TYPE_FIELD_TYPE (type
, 0);
198 int low_bound
= TYPE_LOW_BOUND (range
);
199 int high_bound
= TYPE_HIGH_BOUND (range
);
201 int is_bitstring
= TYPE_CODE (type
) == TYPE_CODE_BITSTRING
;
206 fputs_filtered ("B'", stream
);
208 fputs_filtered ("[", stream
);
209 for (i
= low_bound
; i
<= high_bound
; i
++)
211 int element
= value_bit_index (type
, valaddr
, i
);
213 fprintf_filtered (stream
, "%d", element
);
217 fputs_filtered (", ", stream
);
218 print_type_scalar (TYPE_TARGET_TYPE (range
), i
, stream
);
221 /* Look for a continuous range of true elements. */
222 if (i
+1 <= high_bound
&& value_bit_index (type
, valaddr
, ++i
))
224 int j
= i
; /* j is the upper bound so far of the range */
225 fputs_filtered (":", stream
);
226 while (i
+1 <= high_bound
227 && value_bit_index (type
, valaddr
, ++i
))
229 print_type_scalar (TYPE_TARGET_TYPE (range
), j
, stream
);
234 fputs_filtered ("'", stream
);
236 fputs_filtered ("]", stream
);
240 case TYPE_CODE_STRUCT
:
241 if (chill_is_varying_struct (type
))
243 struct type
*inner
= TYPE_FIELD_TYPE (type
, 1);
244 long length
= unpack_long (TYPE_FIELD_TYPE (type
, 0), valaddr
);
245 char *data_addr
= valaddr
+ TYPE_FIELD_BITPOS (type
, 1) / 8;
247 switch (TYPE_CODE (inner
))
249 case TYPE_CODE_STRING
:
250 if (length
> TYPE_LENGTH (type
))
252 fprintf_filtered (stream
,
253 "<dynamic length %d > static length %d>",
254 length
, TYPE_LENGTH (type
));
255 length
> TYPE_LENGTH (type
);
257 LA_PRINT_STRING (stream
, data_addr
, length
, 0);
261 chill_print_value_fields (type
, valaddr
, stream
, format
, recurse
, pretty
,
268 fprintf_filtered (stream
, "LOC(H'%lx)",
269 extract_unsigned_integer (valaddr
,
270 TARGET_PTR_BIT
/ HOST_CHAR_BIT
));
272 fputs_filtered (": ", stream
);
274 /* De-reference the reference. */
277 if (TYPE_CODE (TYPE_TARGET_TYPE (type
)) != TYPE_CODE_UNDEF
)
281 (TYPE_TARGET_TYPE (type
),
282 unpack_pointer (lookup_pointer_type (builtin_type_void
),
284 val_print (VALUE_TYPE (deref_val
),
285 VALUE_CONTENTS (deref_val
),
286 VALUE_ADDRESS (deref_val
), stream
, format
,
287 deref_ref
, recurse
+ 1, pretty
);
290 fputs_filtered ("???", stream
);
295 c_val_print (type
, valaddr
, address
, stream
, format
,
296 deref_ref
, recurse
, pretty
);
299 case TYPE_CODE_RANGE
:
300 if (TYPE_TARGET_TYPE (type
))
301 chill_val_print (TYPE_TARGET_TYPE (type
), valaddr
, address
, stream
,
302 format
, deref_ref
, recurse
, pretty
);
305 case TYPE_CODE_MEMBER
:
306 case TYPE_CODE_UNION
:
309 case TYPE_CODE_ERROR
:
311 /* Let's defer printing to the C printer, rather than
312 print an error message. FIXME! */
313 c_val_print (type
, valaddr
, address
, stream
, format
,
314 deref_ref
, recurse
, pretty
);
320 /* Mutually recursive subroutines of cplus_print_value and c_val_print to
321 print out a structure's fields: cp_print_value_fields and cplus_print_value.
323 TYPE, VALADDR, STREAM, RECURSE, and PRETTY have the
324 same meanings as in cplus_print_value and c_val_print.
326 DONT_PRINT is an array of baseclass types that we
327 should not print, or zero if called from top level. */
330 chill_print_value_fields (type
, valaddr
, stream
, format
, recurse
, pretty
,
337 enum val_prettyprint pretty
;
338 struct type
**dont_print
;
343 check_stub_type (type
);
345 fprintf_filtered (stream
, "[");
346 len
= TYPE_NFIELDS (type
);
349 fprintf_filtered (stream
, "<No data fields>");
353 for (i
= 0; i
< len
; i
++)
357 fprintf_filtered (stream
, ", ");
362 fprintf_filtered (stream
, "\n");
363 print_spaces_filtered (2 + 2 * recurse
, stream
);
367 wrap_here (n_spaces (2 + 2 * recurse
));
369 fputs_filtered (".", stream
);
370 fprintf_symbol_filtered (stream
, TYPE_FIELD_NAME (type
, i
),
371 language_chill
, DMGL_NO_OPTS
);
372 fputs_filtered (": ", stream
);
373 if (TYPE_FIELD_PACKED (type
, i
))
377 /* Bitfields require special handling, especially due to byte
379 v
= value_from_longest (TYPE_FIELD_TYPE (type
, i
),
380 unpack_field_as_long (type
, valaddr
, i
));
382 chill_val_print (TYPE_FIELD_TYPE (type
, i
), VALUE_CONTENTS (v
), 0,
383 stream
, format
, 0, recurse
+ 1, pretty
);
387 chill_val_print (TYPE_FIELD_TYPE (type
, i
),
388 valaddr
+ TYPE_FIELD_BITPOS (type
, i
) / 8,
389 0, stream
, format
, 0, recurse
+ 1, pretty
);
394 fprintf_filtered (stream
, "\n");
395 print_spaces_filtered (2 * recurse
, stream
);
398 fprintf_filtered (stream
, "]");
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