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a8a69e63 FF |
1 | /* Support for printing Chill values for GDB, the GNU debugger. |
2 | Copyright 1986, 1988, 1989, 1991 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GDB. | |
5 | ||
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. | |
10 | ||
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. | |
15 | ||
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., 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 FF |
31 | static void |
32 | chill_print_value_fields PARAMS ((struct type *, char *, FILE *, int, int, | |
33 | enum val_prettyprint, struct type **)); | |
34 | ||
a8a69e63 FF |
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 | ||
49 | int | |
50 | chill_val_print (type, valaddr, address, stream, format, deref_ref, recurse, | |
51 | pretty) | |
52 | struct type *type; | |
53 | char *valaddr; | |
54 | CORE_ADDR address; | |
55 | FILE *stream; | |
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 FF |
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 | { | |
a8a69e63 FF |
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 FF |
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); |
c7da3ed3 FF |
161 | } |
162 | ||
163 | /* For a pointer to char or unsigned char, also print the string | |
164 | pointed to, unless pointer is null. */ | |
c7da3ed3 FF |
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 FF |
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 | ||
c4413e2c FF |
180 | case TYPE_CODE_STRING: |
181 | if (format && format != 's') | |
182 | { | |
183 | print_scalar_formatted (valaddr, type, format, 0, stream); | |
184 | break; | |
185 | } | |
c4413e2c FF |
186 | if (addressprint && format != 's') |
187 | { | |
bf5b632d JK |
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 | } |
ec16f701 FF |
192 | i = TYPE_LENGTH (type); |
193 | LA_PRINT_STRING (stream, valaddr, i, 0); | |
c4413e2c FF |
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 | ||
8fbdca53 FF |
199 | case TYPE_CODE_STRUCT: |
200 | chill_print_value_fields (type, valaddr, stream, format, recurse, pretty, | |
201 | 0); | |
202 | break; | |
203 | ||
a8a69e63 | 204 | case TYPE_CODE_REF: |
8a177da6 PB |
205 | if (addressprint) |
206 | { | |
207 | fprintf_filtered (stream, "LOC(H'%lx)", | |
208 | unpack_long (builtin_type_int, valaddr)); | |
209 | if (deref_ref) | |
210 | fputs_filtered (": ", stream); | |
211 | } | |
212 | /* De-reference the reference. */ | |
213 | if (deref_ref) | |
214 | { | |
215 | if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_UNDEF) | |
216 | { | |
217 | value deref_val = | |
218 | value_at | |
219 | (TYPE_TARGET_TYPE (type), | |
220 | unpack_pointer (lookup_pointer_type (builtin_type_void), | |
221 | valaddr)); | |
222 | val_print (VALUE_TYPE (deref_val), | |
223 | VALUE_CONTENTS (deref_val), | |
224 | VALUE_ADDRESS (deref_val), stream, format, | |
225 | deref_ref, recurse + 1, pretty); | |
226 | } | |
227 | else | |
228 | fputs_filtered ("???", stream); | |
229 | } | |
230 | break; | |
231 | ||
a8a69e63 | 232 | case TYPE_CODE_ENUM: |
8a177da6 PB |
233 | c_val_print (type, valaddr, address, stream, format, |
234 | deref_ref, recurse, pretty); | |
235 | break; | |
236 | ||
237 | case TYPE_CODE_MEMBER: | |
238 | case TYPE_CODE_UNION: | |
a8a69e63 FF |
239 | case TYPE_CODE_FUNC: |
240 | case TYPE_CODE_VOID: | |
241 | case TYPE_CODE_ERROR: | |
242 | case TYPE_CODE_RANGE: | |
a8a69e63 | 243 | default: |
8a177da6 PB |
244 | /* Let's derfer printing to the C printer, rather than |
245 | print an error message. FIXME! */ | |
246 | c_val_print (type, valaddr, address, stream, format, | |
247 | deref_ref, recurse, pretty); | |
a8a69e63 FF |
248 | } |
249 | fflush (stream); | |
250 | return (0); | |
251 | } | |
8fbdca53 FF |
252 | |
253 | /* Mutually recursive subroutines of cplus_print_value and c_val_print to | |
254 | print out a structure's fields: cp_print_value_fields and cplus_print_value. | |
255 | ||
256 | TYPE, VALADDR, STREAM, RECURSE, and PRETTY have the | |
257 | same meanings as in cplus_print_value and c_val_print. | |
258 | ||
259 | DONT_PRINT is an array of baseclass types that we | |
260 | should not print, or zero if called from top level. */ | |
261 | ||
262 | static void | |
263 | chill_print_value_fields (type, valaddr, stream, format, recurse, pretty, | |
264 | dont_print) | |
265 | struct type *type; | |
266 | char *valaddr; | |
267 | FILE *stream; | |
268 | int format; | |
269 | int recurse; | |
270 | enum val_prettyprint pretty; | |
271 | struct type **dont_print; | |
272 | { | |
273 | int i, len; | |
274 | int fields_seen = 0; | |
275 | ||
276 | check_stub_type (type); | |
277 | ||
8a177da6 | 278 | fprintf_filtered (stream, "["); |
8fbdca53 FF |
279 | len = TYPE_NFIELDS (type); |
280 | if (len == 0) | |
281 | { | |
282 | fprintf_filtered (stream, "<No data fields>"); | |
283 | } | |
284 | else | |
285 | { | |
286 | for (i = 0; i < len; i++) | |
287 | { | |
288 | if (fields_seen) | |
289 | { | |
290 | fprintf_filtered (stream, ", "); | |
291 | } | |
292 | fields_seen = 1; | |
293 | if (pretty) | |
294 | { | |
295 | fprintf_filtered (stream, "\n"); | |
296 | print_spaces_filtered (2 + 2 * recurse, stream); | |
297 | } | |
298 | else | |
299 | { | |
300 | wrap_here (n_spaces (2 + 2 * recurse)); | |
301 | } | |
8a177da6 | 302 | fputs_filtered (".", stream); |
5e81259d FF |
303 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), |
304 | language_chill, DMGL_NO_OPTS); | |
8a177da6 | 305 | fputs_filtered (": ", stream); |
8fbdca53 FF |
306 | if (TYPE_FIELD_PACKED (type, i)) |
307 | { | |
308 | value v; | |
309 | ||
310 | /* Bitfields require special handling, especially due to byte | |
311 | order problems. */ | |
312 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), | |
313 | unpack_field_as_long (type, valaddr, i)); | |
314 | ||
315 | chill_val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v), 0, | |
316 | stream, format, 0, recurse + 1, pretty); | |
317 | } | |
318 | else | |
319 | { | |
320 | chill_val_print (TYPE_FIELD_TYPE (type, i), | |
321 | valaddr + TYPE_FIELD_BITPOS (type, i) / 8, | |
322 | 0, stream, format, 0, recurse + 1, pretty); | |
323 | } | |
324 | } | |
325 | if (pretty) | |
326 | { | |
327 | fprintf_filtered (stream, "\n"); | |
328 | print_spaces_filtered (2 * recurse, stream); | |
329 | } | |
330 | } | |
8a177da6 | 331 | fprintf_filtered (stream, "]"); |
8fbdca53 FF |
332 | } |
333 |