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d4310edb LC |
1 | /* Scheme/Guile language support routines for GDB, the GNU debugger. |
2 | ||
9b254dd1 DJ |
3 | Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2005, 2007, 2008 |
4 | Free Software Foundation, Inc. | |
d4310edb LC |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
d4310edb LC |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
d4310edb LC |
20 | |
21 | #include "defs.h" | |
22 | #include "symtab.h" | |
23 | #include "gdbtypes.h" | |
24 | #include "expression.h" | |
25 | #include "parser-defs.h" | |
26 | #include "language.h" | |
27 | #include "value.h" | |
28 | #include "scm-lang.h" | |
29 | #include "valprint.h" | |
30 | #include "gdbcore.h" | |
31 | #include "c-lang.h" | |
32 | #include "infcall.h" | |
33 | ||
34 | static void scm_ipruk (char *, LONGEST, struct ui_file *); | |
35 | static void scm_scmlist_print (LONGEST, struct ui_file *, int, int, | |
36 | int, enum val_prettyprint); | |
37 | static int scm_inferior_print (LONGEST, struct ui_file *, int, int, | |
38 | int, enum val_prettyprint); | |
39 | ||
40 | /* Prints the SCM value VALUE by invoking the inferior, if appropraite. | |
41 | Returns >= 0 on success; return -1 if the inferior cannot/should not | |
42 | print VALUE. */ | |
43 | ||
44 | static int | |
45 | scm_inferior_print (LONGEST value, struct ui_file *stream, int format, | |
46 | int deref_ref, int recurse, enum val_prettyprint pretty) | |
47 | { | |
48 | struct value *func, *arg, *result; | |
49 | struct symbol *gdb_output_sym, *gdb_output_len_sym; | |
50 | char *output; | |
51 | int ret, output_len; | |
52 | ||
53 | func = find_function_in_inferior ("gdb_print"); | |
54 | arg = value_from_longest (builtin_type_CORE_ADDR, value); | |
55 | ||
56 | result = call_function_by_hand (func, 1, &arg); | |
57 | ret = (int) value_as_long (result); | |
58 | if (ret == 0) | |
59 | { | |
60 | /* XXX: Should we cache these symbols? */ | |
61 | gdb_output_sym = | |
21b556f4 | 62 | lookup_symbol_global ("gdb_output", NULL, NULL, VAR_DOMAIN); |
d4310edb | 63 | gdb_output_len_sym = |
21b556f4 | 64 | lookup_symbol_global ("gdb_output_length", NULL, NULL, VAR_DOMAIN); |
d4310edb LC |
65 | |
66 | if ((gdb_output_sym == NULL) || (gdb_output_len_sym == NULL)) | |
67 | ret = -1; | |
68 | else | |
69 | { | |
70 | struct value *remote_buffer; | |
71 | ||
72 | read_memory (SYMBOL_VALUE_ADDRESS (gdb_output_len_sym), | |
73 | (char *) &output_len, sizeof (output_len)); | |
74 | ||
75 | output = (char *) alloca (output_len); | |
76 | remote_buffer = value_at (builtin_type_CORE_ADDR, | |
77 | SYMBOL_VALUE_ADDRESS (gdb_output_sym)); | |
78 | read_memory (value_as_address (remote_buffer), | |
79 | output, output_len); | |
80 | ||
81 | ui_file_write (stream, output, output_len); | |
82 | } | |
83 | } | |
84 | ||
85 | return ret; | |
86 | } | |
87 | ||
88 | /* {Names of immediate symbols} | |
89 | * This table must agree with the declarations in scm.h: {Immediate Symbols}.*/ | |
90 | ||
91 | static char *scm_isymnames[] = | |
92 | { | |
93 | /* This table must agree with the declarations */ | |
94 | "and", | |
95 | "begin", | |
96 | "case", | |
97 | "cond", | |
98 | "do", | |
99 | "if", | |
100 | "lambda", | |
101 | "let", | |
102 | "let*", | |
103 | "letrec", | |
104 | "or", | |
105 | "quote", | |
106 | "set!", | |
107 | "define", | |
108 | #if 0 | |
109 | "literal-variable-ref", | |
110 | "literal-variable-set!", | |
111 | #endif | |
112 | "apply", | |
113 | "call-with-current-continuation", | |
114 | ||
115 | /* user visible ISYMS */ | |
116 | /* other keywords */ | |
117 | /* Flags */ | |
118 | ||
119 | "#f", | |
120 | "#t", | |
121 | "#<undefined>", | |
122 | "#<eof>", | |
123 | "()", | |
124 | "#<unspecified>" | |
125 | }; | |
126 | ||
127 | static void | |
128 | scm_scmlist_print (LONGEST svalue, struct ui_file *stream, int format, | |
129 | int deref_ref, int recurse, enum val_prettyprint pretty) | |
130 | { | |
131 | unsigned int more = print_max; | |
132 | if (recurse > 6) | |
133 | { | |
134 | fputs_filtered ("...", stream); | |
135 | return; | |
136 | } | |
137 | scm_scmval_print (SCM_CAR (svalue), stream, format, | |
138 | deref_ref, recurse + 1, pretty); | |
139 | svalue = SCM_CDR (svalue); | |
140 | for (; SCM_NIMP (svalue); svalue = SCM_CDR (svalue)) | |
141 | { | |
142 | if (SCM_NECONSP (svalue)) | |
143 | break; | |
144 | fputs_filtered (" ", stream); | |
145 | if (--more == 0) | |
146 | { | |
147 | fputs_filtered ("...", stream); | |
148 | return; | |
149 | } | |
150 | scm_scmval_print (SCM_CAR (svalue), stream, format, | |
151 | deref_ref, recurse + 1, pretty); | |
152 | } | |
153 | if (SCM_NNULLP (svalue)) | |
154 | { | |
155 | fputs_filtered (" . ", stream); | |
156 | scm_scmval_print (svalue, stream, format, | |
157 | deref_ref, recurse + 1, pretty); | |
158 | } | |
159 | } | |
160 | ||
161 | static void | |
162 | scm_ipruk (char *hdr, LONGEST ptr, struct ui_file *stream) | |
163 | { | |
164 | fprintf_filtered (stream, "#<unknown-%s", hdr); | |
165 | #define SCM_SIZE TYPE_LENGTH (builtin_type_scm) | |
166 | if (SCM_CELLP (ptr)) | |
167 | fprintf_filtered (stream, " (0x%lx . 0x%lx) @", | |
168 | (long) SCM_CAR (ptr), (long) SCM_CDR (ptr)); | |
169 | fprintf_filtered (stream, " 0x%s>", paddr_nz (ptr)); | |
170 | } | |
171 | ||
172 | void | |
173 | scm_scmval_print (LONGEST svalue, struct ui_file *stream, int format, | |
174 | int deref_ref, int recurse, enum val_prettyprint pretty) | |
175 | { | |
176 | taloop: | |
177 | switch (7 & (int) svalue) | |
178 | { | |
179 | case 2: | |
180 | case 6: | |
181 | print_longest (stream, format ? format : 'd', 1, svalue >> 2); | |
182 | break; | |
183 | case 4: | |
184 | if (SCM_ICHRP (svalue)) | |
185 | { | |
186 | svalue = SCM_ICHR (svalue); | |
187 | scm_printchar (svalue, stream); | |
188 | break; | |
189 | } | |
190 | else if (SCM_IFLAGP (svalue) | |
191 | && (SCM_ISYMNUM (svalue) | |
192 | < (sizeof scm_isymnames / sizeof (char *)))) | |
193 | { | |
194 | fputs_filtered (SCM_ISYMCHARS (svalue), stream); | |
195 | break; | |
196 | } | |
197 | else if (SCM_ILOCP (svalue)) | |
198 | { | |
199 | fprintf_filtered (stream, "#@%ld%c%ld", | |
200 | (long) SCM_IFRAME (svalue), | |
201 | SCM_ICDRP (svalue) ? '-' : '+', | |
202 | (long) SCM_IDIST (svalue)); | |
203 | break; | |
204 | } | |
205 | else | |
206 | goto idef; | |
207 | break; | |
208 | case 1: | |
209 | /* gloc */ | |
210 | svalue = SCM_CAR (svalue - 1); | |
211 | goto taloop; | |
212 | default: | |
213 | idef: | |
214 | scm_ipruk ("immediate", svalue, stream); | |
215 | break; | |
216 | case 0: | |
217 | ||
218 | switch (SCM_TYP7 (svalue)) | |
219 | { | |
220 | case scm_tcs_cons_gloc: | |
221 | if (SCM_CDR (SCM_CAR (svalue) - 1L) == 0) | |
222 | { | |
223 | #if 0 | |
224 | SCM name; | |
225 | #endif | |
226 | fputs_filtered ("#<latte ", stream); | |
227 | #if 1 | |
228 | fputs_filtered ("???", stream); | |
229 | #else | |
230 | name = ((SCM n *) (STRUCT_TYPE (exp)))[struct_i_name]; | |
231 | scm_lfwrite (CHARS (name), | |
232 | (sizet) sizeof (char), | |
233 | (sizet) LENGTH (name), | |
234 | port); | |
235 | #endif | |
236 | fprintf_filtered (stream, " #X%s>", paddr_nz (svalue)); | |
237 | break; | |
238 | } | |
239 | case scm_tcs_cons_imcar: | |
240 | case scm_tcs_cons_nimcar: | |
241 | fputs_filtered ("(", stream); | |
242 | scm_scmlist_print (svalue, stream, format, | |
243 | deref_ref, recurse + 1, pretty); | |
244 | fputs_filtered (")", stream); | |
245 | break; | |
246 | case scm_tcs_closures: | |
247 | fputs_filtered ("#<CLOSURE ", stream); | |
248 | scm_scmlist_print (SCM_CODE (svalue), stream, format, | |
249 | deref_ref, recurse + 1, pretty); | |
250 | fputs_filtered (">", stream); | |
251 | break; | |
252 | case scm_tc7_string: | |
253 | { | |
254 | int len = SCM_LENGTH (svalue); | |
255 | CORE_ADDR addr = (CORE_ADDR) SCM_CDR (svalue); | |
256 | int i; | |
257 | int done = 0; | |
258 | int buf_size; | |
259 | gdb_byte buffer[64]; | |
260 | int truncate = print_max && len > (int) print_max; | |
261 | if (truncate) | |
262 | len = print_max; | |
263 | fputs_filtered ("\"", stream); | |
264 | for (; done < len; done += buf_size) | |
265 | { | |
266 | buf_size = min (len - done, 64); | |
267 | read_memory (addr + done, buffer, buf_size); | |
268 | ||
269 | for (i = 0; i < buf_size; ++i) | |
270 | switch (buffer[i]) | |
271 | { | |
272 | case '\"': | |
273 | case '\\': | |
274 | fputs_filtered ("\\", stream); | |
275 | default: | |
276 | fprintf_filtered (stream, "%c", buffer[i]); | |
277 | } | |
278 | } | |
279 | fputs_filtered (truncate ? "...\"" : "\"", stream); | |
280 | break; | |
281 | } | |
282 | break; | |
283 | case scm_tcs_symbols: | |
284 | { | |
285 | int len = SCM_LENGTH (svalue); | |
286 | ||
287 | char *str = alloca (len); | |
288 | read_memory (SCM_CDR (svalue), (gdb_byte *) str, len + 1); | |
289 | /* Should handle weird characters FIXME */ | |
290 | str[len] = '\0'; | |
291 | fputs_filtered (str, stream); | |
292 | break; | |
293 | } | |
294 | case scm_tc7_vector: | |
295 | { | |
296 | int len = SCM_LENGTH (svalue); | |
297 | int i; | |
298 | LONGEST elements = SCM_CDR (svalue); | |
299 | fputs_filtered ("#(", stream); | |
300 | for (i = 0; i < len; ++i) | |
301 | { | |
302 | if (i > 0) | |
303 | fputs_filtered (" ", stream); | |
304 | scm_scmval_print (scm_get_field (elements, i), stream, format, | |
305 | deref_ref, recurse + 1, pretty); | |
306 | } | |
307 | fputs_filtered (")", stream); | |
308 | } | |
309 | break; | |
310 | #if 0 | |
311 | case tc7_lvector: | |
312 | { | |
313 | SCM result; | |
314 | SCM hook; | |
315 | hook = scm_get_lvector_hook (exp, LV_PRINT_FN); | |
316 | if (hook == BOOL_F) | |
317 | { | |
318 | scm_puts ("#<locked-vector ", port); | |
319 | scm_intprint (CDR (exp), 16, port); | |
320 | scm_puts (">", port); | |
321 | } | |
322 | else | |
323 | { | |
324 | result | |
325 | = scm_apply (hook, | |
326 | scm_listify (exp, port, | |
327 | (writing ? BOOL_T : BOOL_F), | |
328 | SCM_UNDEFINED), | |
329 | EOL); | |
330 | if (result == BOOL_F) | |
331 | goto punk; | |
332 | } | |
333 | break; | |
334 | } | |
335 | break; | |
336 | case tc7_bvect: | |
337 | case tc7_ivect: | |
338 | case tc7_uvect: | |
339 | case tc7_fvect: | |
340 | case tc7_dvect: | |
341 | case tc7_cvect: | |
342 | scm_raprin1 (exp, port, writing); | |
343 | break; | |
344 | #endif | |
345 | case scm_tcs_subrs: | |
346 | { | |
347 | int index = SCM_CAR (svalue) >> 8; | |
348 | #if 1 | |
349 | char str[20]; | |
350 | sprintf (str, "#%d", index); | |
351 | #else | |
352 | char *str = index ? SCM_CHARS (scm_heap_org + index) : ""; | |
353 | #define SCM_CHARS(x) ((char *)(SCM_CDR(x))) | |
354 | char *str = CHARS (SNAME (exp)); | |
355 | #endif | |
356 | fprintf_filtered (stream, "#<primitive-procedure %s>", | |
357 | str); | |
358 | } | |
359 | break; | |
360 | #if 0 | |
361 | #ifdef CCLO | |
362 | case tc7_cclo: | |
363 | scm_puts ("#<compiled-closure ", port); | |
364 | scm_iprin1 (CCLO_SUBR (exp), port, writing); | |
365 | scm_putc ('>', port); | |
366 | break; | |
367 | #endif | |
368 | case tc7_contin: | |
369 | fprintf_filtered (stream, "#<continuation %d @ #X%lx >", | |
370 | LENGTH (svalue), | |
371 | (long) CHARS (svalue)); | |
372 | break; | |
373 | case tc7_port: | |
374 | i = PTOBNUM (exp); | |
375 | if (i < scm_numptob | |
376 | && scm_ptobs[i].print | |
377 | && (scm_ptobs[i].print) (exp, port, writing)) | |
378 | break; | |
379 | goto punk; | |
380 | case tc7_smob: | |
381 | i = SMOBNUM (exp); | |
382 | if (i < scm_numsmob && scm_smobs[i].print | |
383 | && (scm_smobs[i].print) (exp, port, writing)) | |
384 | break; | |
385 | goto punk; | |
386 | #endif | |
387 | default: | |
388 | #if 0 | |
389 | punk: | |
390 | #endif | |
391 | scm_ipruk ("type", svalue, stream); | |
392 | } | |
393 | break; | |
394 | } | |
395 | } | |
396 | ||
397 | int | |
398 | scm_val_print (struct type *type, const gdb_byte *valaddr, | |
399 | int embedded_offset, CORE_ADDR address, | |
400 | struct ui_file *stream, int format, int deref_ref, | |
401 | int recurse, enum val_prettyprint pretty) | |
402 | { | |
403 | if (is_scmvalue_type (type)) | |
404 | { | |
405 | LONGEST svalue = extract_signed_integer (valaddr, TYPE_LENGTH (type)); | |
406 | ||
407 | if (scm_inferior_print (svalue, stream, format, | |
408 | deref_ref, recurse, pretty) >= 0) | |
409 | { | |
410 | } | |
411 | else | |
412 | { | |
413 | scm_scmval_print (svalue, stream, format, | |
414 | deref_ref, recurse, pretty); | |
415 | } | |
416 | ||
417 | gdb_flush (stream); | |
418 | return (0); | |
419 | } | |
420 | else | |
421 | { | |
422 | return c_val_print (type, valaddr, 0, address, stream, format, | |
423 | deref_ref, recurse, pretty); | |
424 | } | |
425 | } | |
426 | ||
427 | int | |
428 | scm_value_print (struct value *val, struct ui_file *stream, int format, | |
429 | enum val_prettyprint pretty) | |
430 | { | |
d8ca156b JB |
431 | return (common_val_print (val, stream, format, 1, 0, pretty, |
432 | current_language)); | |
d4310edb | 433 | } |