Implement support for Chill POWERSETs.
[deliverable/binutils-gdb.git] / gdb / ch-valprint.c
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1/* Support for printing Chill values for GDB, the GNU debugger.
2 Copyright 1986, 1988, 1989, 1991 Free Software Foundation, Inc.
3
4This file is part of GDB.
5
6This program is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 2 of the License, or
9(at your option) any later version.
10
11This program is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with this program; if not, write to the Free Software
18Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
19
20#include "defs.h"
21#include "obstack.h"
22#include "symtab.h"
23#include "gdbtypes.h"
24#include "valprint.h"
25#include "expression.h"
8fbdca53 26#include "value.h"
a8a69e63 27#include "language.h"
5e81259d 28#include "demangle.h"
100f92e2 29#include "c-lang.h" /* For c_val_print */
a8a69e63 30
8fbdca53 31static void
199b2450 32chill_print_value_fields PARAMS ((struct type *, char *, GDB_FILE *, int, int,
8fbdca53
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33 enum val_prettyprint, struct type **));
34
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35\f
36/* Print data of type TYPE located at VALADDR (within GDB), which came from
37 the inferior at address ADDRESS, onto stdio stream STREAM according to
38 FORMAT (a letter or 0 for natural format). The data at VALADDR is in
39 target byte order.
40
41 If the data are a string pointer, returns the number of string characters
42 printed.
43
44 If DEREF_REF is nonzero, then dereference references, otherwise just print
45 them like pointers.
46
47 The PRETTY parameter controls prettyprinting. */
48
49int
50chill_val_print (type, valaddr, address, stream, format, deref_ref, recurse,
51 pretty)
52 struct type *type;
53 char *valaddr;
54 CORE_ADDR address;
199b2450 55 GDB_FILE *stream;
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56 int format;
57 int deref_ref;
58 int recurse;
59 enum val_prettyprint pretty;
60{
a8a69e63 61 LONGEST val;
ec16f701 62 unsigned int i = 0; /* Number of characters printed. */
c7da3ed3 63 struct type *elttype;
c7da3ed3 64 CORE_ADDR addr;
a8a69e63
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65
66 switch (TYPE_CODE (type))
67 {
68 case TYPE_CODE_ARRAY:
69 if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
70 {
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71 if (prettyprint_arrays)
72 {
73 print_spaces_filtered (2 + 2 * recurse, stream);
74 }
75 fprintf_filtered (stream, "[");
a9b37611
FF
76 val_print_array_elements (type, valaddr, address, stream, format,
77 deref_ref, recurse, pretty, 0);
a8a69e63
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78 fprintf_filtered (stream, "]");
79 }
80 else
81 {
82 error ("unimplemented in chill_val_print; unspecified array length");
83 }
84 break;
85
86 case TYPE_CODE_INT:
87 format = format ? format : output_format;
88 if (format)
89 {
90 print_scalar_formatted (valaddr, type, format, 0, stream);
91 }
92 else
93 {
94 val_print_type_code_int (type, valaddr, stream);
95 }
96 break;
97
98 case TYPE_CODE_CHAR:
99 format = format ? format : output_format;
100 if (format)
101 {
102 print_scalar_formatted (valaddr, type, format, 0, stream);
103 }
104 else
105 {
106 LA_PRINT_CHAR ((unsigned char) unpack_long (type, valaddr),
107 stream);
108 }
109 break;
110
111 case TYPE_CODE_FLT:
112 if (format)
113 {
114 print_scalar_formatted (valaddr, type, format, 0, stream);
115 }
116 else
117 {
118 print_floating (valaddr, type, stream);
119 }
120 break;
121
122 case TYPE_CODE_BOOL:
123 format = format ? format : output_format;
124 if (format)
125 {
126 print_scalar_formatted (valaddr, type, format, 0, stream);
127 }
128 else
129 {
130 val = unpack_long (builtin_type_chill_bool, valaddr);
131 fprintf_filtered (stream, val ? "TRUE" : "FALSE");
132 }
133 break;
134
135 case TYPE_CODE_UNDEF:
136 /* This happens (without TYPE_FLAG_STUB set) on systems which don't use
137 dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
138 and no complete type for struct foo in that file. */
139 fprintf_filtered (stream, "<incomplete type>");
140 break;
141
142 case TYPE_CODE_PTR:
c7da3ed3
FF
143 if (format && format != 's')
144 {
145 print_scalar_formatted (valaddr, type, format, 0, stream);
146 break;
147 }
148 addr = unpack_pointer (type, valaddr);
149 elttype = TYPE_TARGET_TYPE (type);
150
151 if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
152 {
153 /* Try to print what function it points to. */
154 print_address_demangle (addr, stream, demangle);
155 /* Return value is irrelevant except for string pointers. */
156 return (0);
157 }
158 if (addressprint && format != 's')
159 {
5573d7d4 160 fprintf_filtered (stream, "H'%lx", (unsigned long) addr);
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161 }
162
163 /* For a pointer to char or unsigned char, also print the string
164 pointed to, unless pointer is null. */
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165 if (TYPE_LENGTH (elttype) == 1
166 && TYPE_CODE (elttype) == TYPE_CODE_CHAR
167 && (format == 0 || format == 's')
168 && addr != 0
169 && /* If print_max is UINT_MAX, the alloca below will fail.
170 In that case don't try to print the string. */
171 print_max < UINT_MAX)
172 {
8fbdca53 173 i = val_print_string (addr, 0, stream);
c7da3ed3
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174 }
175 /* Return number of characters printed, plus one for the
176 terminating null if we have "reached the end". */
177 return (i + (print_max && i != print_max));
178 break;
179
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180 case TYPE_CODE_STRING:
181 if (format && format != 's')
182 {
183 print_scalar_formatted (valaddr, type, format, 0, stream);
184 break;
185 }
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186 if (addressprint && format != 's')
187 {
bf5b632d
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188 /* This used to say `addr', which is unset at this point.
189 Is `address' what is meant? */
5573d7d4 190 fprintf_filtered (stream, "H'%lx ", (unsigned long) address);
c4413e2c 191 }
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192 i = TYPE_LENGTH (type);
193 LA_PRINT_STRING (stream, valaddr, i, 0);
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194 /* Return number of characters printed, plus one for the terminating
195 null if we have "reached the end". */
196 return (i + (print_max && i != print_max));
197 break;
198
e909f287
PB
199 case TYPE_CODE_SET:
200 {
201 struct type *range = TYPE_FIELD_TYPE (type, 0);
202 int low_bound = TYPE_FIELD_BITPOS (range, 0);
203 int high_bound = TYPE_FIELD_BITPOS (range, 1);
204 int i;
205 int is_bitstring = 0;
206 int need_comma = 0;
207 int in_range = 0;
208
209 if (is_bitstring)
210 fputs_filtered ("B'", stream);
211 else
212 fputs_filtered ("[", stream);
213 for (i = low_bound; i <= high_bound; i++)
214 {
215 int element = value_bit_index (type, valaddr, i);
216 if (is_bitstring)
217 fprintf_filtered (stream, "%d", element);
218 else if (element)
219 {
220 if (need_comma)
221 fputs_filtered (", ", stream);
222 print_type_scalar (TYPE_TARGET_TYPE (range), i, stream);
223 need_comma = 1;
224
225 /* Look for a continuous range of true elements. */
226 if (i+1 <= high_bound && value_bit_index (type, valaddr, ++i))
227 {
228 int j = i; /* j is the upper bound so far of the range */
229 fputs_filtered (":", stream);
230 while (i+1 <= high_bound
231 && value_bit_index (type, valaddr, ++i))
232 j = i;
233 print_type_scalar (TYPE_TARGET_TYPE (range), j, stream);
234 }
235 }
236 }
237 if (is_bitstring)
238 fputs_filtered ("'", stream);
239 else
240 fputs_filtered ("]", stream);
241 }
242 break;
243
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244 case TYPE_CODE_STRUCT:
245 chill_print_value_fields (type, valaddr, stream, format, recurse, pretty,
246 0);
247 break;
248
a8a69e63 249 case TYPE_CODE_REF:
8a177da6
PB
250 if (addressprint)
251 {
252 fprintf_filtered (stream, "LOC(H'%lx)",
253 unpack_long (builtin_type_int, valaddr));
254 if (deref_ref)
255 fputs_filtered (": ", stream);
256 }
257 /* De-reference the reference. */
258 if (deref_ref)
259 {
260 if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_UNDEF)
261 {
262 value deref_val =
263 value_at
264 (TYPE_TARGET_TYPE (type),
265 unpack_pointer (lookup_pointer_type (builtin_type_void),
266 valaddr));
267 val_print (VALUE_TYPE (deref_val),
268 VALUE_CONTENTS (deref_val),
269 VALUE_ADDRESS (deref_val), stream, format,
270 deref_ref, recurse + 1, pretty);
271 }
272 else
273 fputs_filtered ("???", stream);
274 }
275 break;
276
a8a69e63 277 case TYPE_CODE_ENUM:
8a177da6
PB
278 c_val_print (type, valaddr, address, stream, format,
279 deref_ref, recurse, pretty);
280 break;
281
11b959da
FF
282 case TYPE_CODE_RANGE:
283 if (TYPE_TARGET_TYPE (type))
284 chill_val_print (TYPE_TARGET_TYPE (type), valaddr, address, stream,
285 format, deref_ref, recurse, pretty);
286 break;
287
8a177da6
PB
288 case TYPE_CODE_MEMBER:
289 case TYPE_CODE_UNION:
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290 case TYPE_CODE_FUNC:
291 case TYPE_CODE_VOID:
292 case TYPE_CODE_ERROR:
a8a69e63 293 default:
11b959da 294 /* Let's defer printing to the C printer, rather than
8a177da6
PB
295 print an error message. FIXME! */
296 c_val_print (type, valaddr, address, stream, format,
297 deref_ref, recurse, pretty);
a8a69e63 298 }
199b2450 299 gdb_flush (stream);
a8a69e63
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300 return (0);
301}
8fbdca53
FF
302
303/* Mutually recursive subroutines of cplus_print_value and c_val_print to
304 print out a structure's fields: cp_print_value_fields and cplus_print_value.
305
306 TYPE, VALADDR, STREAM, RECURSE, and PRETTY have the
307 same meanings as in cplus_print_value and c_val_print.
308
309 DONT_PRINT is an array of baseclass types that we
310 should not print, or zero if called from top level. */
311
312static void
313chill_print_value_fields (type, valaddr, stream, format, recurse, pretty,
314 dont_print)
315 struct type *type;
316 char *valaddr;
199b2450 317 GDB_FILE *stream;
8fbdca53
FF
318 int format;
319 int recurse;
320 enum val_prettyprint pretty;
321 struct type **dont_print;
322{
323 int i, len;
324 int fields_seen = 0;
325
326 check_stub_type (type);
327
8a177da6 328 fprintf_filtered (stream, "[");
8fbdca53
FF
329 len = TYPE_NFIELDS (type);
330 if (len == 0)
331 {
332 fprintf_filtered (stream, "<No data fields>");
333 }
334 else
335 {
336 for (i = 0; i < len; i++)
337 {
338 if (fields_seen)
339 {
340 fprintf_filtered (stream, ", ");
341 }
342 fields_seen = 1;
343 if (pretty)
344 {
345 fprintf_filtered (stream, "\n");
346 print_spaces_filtered (2 + 2 * recurse, stream);
347 }
348 else
349 {
350 wrap_here (n_spaces (2 + 2 * recurse));
351 }
8a177da6 352 fputs_filtered (".", stream);
5e81259d
FF
353 fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
354 language_chill, DMGL_NO_OPTS);
8a177da6 355 fputs_filtered (": ", stream);
8fbdca53
FF
356 if (TYPE_FIELD_PACKED (type, i))
357 {
358 value v;
359
360 /* Bitfields require special handling, especially due to byte
361 order problems. */
362 v = value_from_longest (TYPE_FIELD_TYPE (type, i),
363 unpack_field_as_long (type, valaddr, i));
364
365 chill_val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v), 0,
366 stream, format, 0, recurse + 1, pretty);
367 }
368 else
369 {
370 chill_val_print (TYPE_FIELD_TYPE (type, i),
371 valaddr + TYPE_FIELD_BITPOS (type, i) / 8,
372 0, stream, format, 0, recurse + 1, pretty);
373 }
374 }
375 if (pretty)
376 {
377 fprintf_filtered (stream, "\n");
378 print_spaces_filtered (2 * recurse, stream);
379 }
380 }
8a177da6 381 fprintf_filtered (stream, "]");
8fbdca53 382}
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