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d4310edb LC |
1 | /* Scheme/Guile language support routines for GDB, the GNU debugger. |
2 | ||
3 | Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2005, 2007 Free Software | |
4 | Foundation, Inc. | |
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 | |
10 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
21 | Boston, MA 02110-1301, USA. */ | |
22 | ||
23 | #include "defs.h" | |
24 | #include "symtab.h" | |
25 | #include "gdbtypes.h" | |
26 | #include "expression.h" | |
27 | #include "parser-defs.h" | |
28 | #include "language.h" | |
29 | #include "value.h" | |
30 | #include "scm-lang.h" | |
31 | #include "valprint.h" | |
32 | #include "gdbcore.h" | |
33 | #include "c-lang.h" | |
34 | #include "infcall.h" | |
35 | ||
36 | static void scm_ipruk (char *, LONGEST, struct ui_file *); | |
37 | static void scm_scmlist_print (LONGEST, struct ui_file *, int, int, | |
38 | int, enum val_prettyprint); | |
39 | static int scm_inferior_print (LONGEST, struct ui_file *, int, int, | |
40 | int, enum val_prettyprint); | |
41 | ||
42 | /* Prints the SCM value VALUE by invoking the inferior, if appropraite. | |
43 | Returns >= 0 on success; return -1 if the inferior cannot/should not | |
44 | print VALUE. */ | |
45 | ||
46 | static int | |
47 | scm_inferior_print (LONGEST value, struct ui_file *stream, int format, | |
48 | int deref_ref, int recurse, enum val_prettyprint pretty) | |
49 | { | |
50 | struct value *func, *arg, *result; | |
51 | struct symbol *gdb_output_sym, *gdb_output_len_sym; | |
52 | char *output; | |
53 | int ret, output_len; | |
54 | ||
55 | func = find_function_in_inferior ("gdb_print"); | |
56 | arg = value_from_longest (builtin_type_CORE_ADDR, value); | |
57 | ||
58 | result = call_function_by_hand (func, 1, &arg); | |
59 | ret = (int) value_as_long (result); | |
60 | if (ret == 0) | |
61 | { | |
62 | /* XXX: Should we cache these symbols? */ | |
63 | gdb_output_sym = | |
64 | lookup_symbol_global ("gdb_output", NULL, NULL, | |
65 | VAR_DOMAIN, | |
66 | (struct symtab **) NULL); | |
67 | gdb_output_len_sym = | |
68 | lookup_symbol_global ("gdb_output_length", NULL, NULL, | |
69 | VAR_DOMAIN, | |
70 | (struct symtab **) NULL); | |
71 | ||
72 | if ((gdb_output_sym == NULL) || (gdb_output_len_sym == NULL)) | |
73 | ret = -1; | |
74 | else | |
75 | { | |
76 | struct value *remote_buffer; | |
77 | ||
78 | read_memory (SYMBOL_VALUE_ADDRESS (gdb_output_len_sym), | |
79 | (char *) &output_len, sizeof (output_len)); | |
80 | ||
81 | output = (char *) alloca (output_len); | |
82 | remote_buffer = value_at (builtin_type_CORE_ADDR, | |
83 | SYMBOL_VALUE_ADDRESS (gdb_output_sym)); | |
84 | read_memory (value_as_address (remote_buffer), | |
85 | output, output_len); | |
86 | ||
87 | ui_file_write (stream, output, output_len); | |
88 | } | |
89 | } | |
90 | ||
91 | return ret; | |
92 | } | |
93 | ||
94 | /* {Names of immediate symbols} | |
95 | * This table must agree with the declarations in scm.h: {Immediate Symbols}.*/ | |
96 | ||
97 | static char *scm_isymnames[] = | |
98 | { | |
99 | /* This table must agree with the declarations */ | |
100 | "and", | |
101 | "begin", | |
102 | "case", | |
103 | "cond", | |
104 | "do", | |
105 | "if", | |
106 | "lambda", | |
107 | "let", | |
108 | "let*", | |
109 | "letrec", | |
110 | "or", | |
111 | "quote", | |
112 | "set!", | |
113 | "define", | |
114 | #if 0 | |
115 | "literal-variable-ref", | |
116 | "literal-variable-set!", | |
117 | #endif | |
118 | "apply", | |
119 | "call-with-current-continuation", | |
120 | ||
121 | /* user visible ISYMS */ | |
122 | /* other keywords */ | |
123 | /* Flags */ | |
124 | ||
125 | "#f", | |
126 | "#t", | |
127 | "#<undefined>", | |
128 | "#<eof>", | |
129 | "()", | |
130 | "#<unspecified>" | |
131 | }; | |
132 | ||
133 | static void | |
134 | scm_scmlist_print (LONGEST svalue, struct ui_file *stream, int format, | |
135 | int deref_ref, int recurse, enum val_prettyprint pretty) | |
136 | { | |
137 | unsigned int more = print_max; | |
138 | if (recurse > 6) | |
139 | { | |
140 | fputs_filtered ("...", stream); | |
141 | return; | |
142 | } | |
143 | scm_scmval_print (SCM_CAR (svalue), stream, format, | |
144 | deref_ref, recurse + 1, pretty); | |
145 | svalue = SCM_CDR (svalue); | |
146 | for (; SCM_NIMP (svalue); svalue = SCM_CDR (svalue)) | |
147 | { | |
148 | if (SCM_NECONSP (svalue)) | |
149 | break; | |
150 | fputs_filtered (" ", stream); | |
151 | if (--more == 0) | |
152 | { | |
153 | fputs_filtered ("...", stream); | |
154 | return; | |
155 | } | |
156 | scm_scmval_print (SCM_CAR (svalue), stream, format, | |
157 | deref_ref, recurse + 1, pretty); | |
158 | } | |
159 | if (SCM_NNULLP (svalue)) | |
160 | { | |
161 | fputs_filtered (" . ", stream); | |
162 | scm_scmval_print (svalue, stream, format, | |
163 | deref_ref, recurse + 1, pretty); | |
164 | } | |
165 | } | |
166 | ||
167 | static void | |
168 | scm_ipruk (char *hdr, LONGEST ptr, struct ui_file *stream) | |
169 | { | |
170 | fprintf_filtered (stream, "#<unknown-%s", hdr); | |
171 | #define SCM_SIZE TYPE_LENGTH (builtin_type_scm) | |
172 | if (SCM_CELLP (ptr)) | |
173 | fprintf_filtered (stream, " (0x%lx . 0x%lx) @", | |
174 | (long) SCM_CAR (ptr), (long) SCM_CDR (ptr)); | |
175 | fprintf_filtered (stream, " 0x%s>", paddr_nz (ptr)); | |
176 | } | |
177 | ||
178 | void | |
179 | scm_scmval_print (LONGEST svalue, struct ui_file *stream, int format, | |
180 | int deref_ref, int recurse, enum val_prettyprint pretty) | |
181 | { | |
182 | taloop: | |
183 | switch (7 & (int) svalue) | |
184 | { | |
185 | case 2: | |
186 | case 6: | |
187 | print_longest (stream, format ? format : 'd', 1, svalue >> 2); | |
188 | break; | |
189 | case 4: | |
190 | if (SCM_ICHRP (svalue)) | |
191 | { | |
192 | svalue = SCM_ICHR (svalue); | |
193 | scm_printchar (svalue, stream); | |
194 | break; | |
195 | } | |
196 | else if (SCM_IFLAGP (svalue) | |
197 | && (SCM_ISYMNUM (svalue) | |
198 | < (sizeof scm_isymnames / sizeof (char *)))) | |
199 | { | |
200 | fputs_filtered (SCM_ISYMCHARS (svalue), stream); | |
201 | break; | |
202 | } | |
203 | else if (SCM_ILOCP (svalue)) | |
204 | { | |
205 | fprintf_filtered (stream, "#@%ld%c%ld", | |
206 | (long) SCM_IFRAME (svalue), | |
207 | SCM_ICDRP (svalue) ? '-' : '+', | |
208 | (long) SCM_IDIST (svalue)); | |
209 | break; | |
210 | } | |
211 | else | |
212 | goto idef; | |
213 | break; | |
214 | case 1: | |
215 | /* gloc */ | |
216 | svalue = SCM_CAR (svalue - 1); | |
217 | goto taloop; | |
218 | default: | |
219 | idef: | |
220 | scm_ipruk ("immediate", svalue, stream); | |
221 | break; | |
222 | case 0: | |
223 | ||
224 | switch (SCM_TYP7 (svalue)) | |
225 | { | |
226 | case scm_tcs_cons_gloc: | |
227 | if (SCM_CDR (SCM_CAR (svalue) - 1L) == 0) | |
228 | { | |
229 | #if 0 | |
230 | SCM name; | |
231 | #endif | |
232 | fputs_filtered ("#<latte ", stream); | |
233 | #if 1 | |
234 | fputs_filtered ("???", stream); | |
235 | #else | |
236 | name = ((SCM n *) (STRUCT_TYPE (exp)))[struct_i_name]; | |
237 | scm_lfwrite (CHARS (name), | |
238 | (sizet) sizeof (char), | |
239 | (sizet) LENGTH (name), | |
240 | port); | |
241 | #endif | |
242 | fprintf_filtered (stream, " #X%s>", paddr_nz (svalue)); | |
243 | break; | |
244 | } | |
245 | case scm_tcs_cons_imcar: | |
246 | case scm_tcs_cons_nimcar: | |
247 | fputs_filtered ("(", stream); | |
248 | scm_scmlist_print (svalue, stream, format, | |
249 | deref_ref, recurse + 1, pretty); | |
250 | fputs_filtered (")", stream); | |
251 | break; | |
252 | case scm_tcs_closures: | |
253 | fputs_filtered ("#<CLOSURE ", stream); | |
254 | scm_scmlist_print (SCM_CODE (svalue), stream, format, | |
255 | deref_ref, recurse + 1, pretty); | |
256 | fputs_filtered (">", stream); | |
257 | break; | |
258 | case scm_tc7_string: | |
259 | { | |
260 | int len = SCM_LENGTH (svalue); | |
261 | CORE_ADDR addr = (CORE_ADDR) SCM_CDR (svalue); | |
262 | int i; | |
263 | int done = 0; | |
264 | int buf_size; | |
265 | gdb_byte buffer[64]; | |
266 | int truncate = print_max && len > (int) print_max; | |
267 | if (truncate) | |
268 | len = print_max; | |
269 | fputs_filtered ("\"", stream); | |
270 | for (; done < len; done += buf_size) | |
271 | { | |
272 | buf_size = min (len - done, 64); | |
273 | read_memory (addr + done, buffer, buf_size); | |
274 | ||
275 | for (i = 0; i < buf_size; ++i) | |
276 | switch (buffer[i]) | |
277 | { | |
278 | case '\"': | |
279 | case '\\': | |
280 | fputs_filtered ("\\", stream); | |
281 | default: | |
282 | fprintf_filtered (stream, "%c", buffer[i]); | |
283 | } | |
284 | } | |
285 | fputs_filtered (truncate ? "...\"" : "\"", stream); | |
286 | break; | |
287 | } | |
288 | break; | |
289 | case scm_tcs_symbols: | |
290 | { | |
291 | int len = SCM_LENGTH (svalue); | |
292 | ||
293 | char *str = alloca (len); | |
294 | read_memory (SCM_CDR (svalue), (gdb_byte *) str, len + 1); | |
295 | /* Should handle weird characters FIXME */ | |
296 | str[len] = '\0'; | |
297 | fputs_filtered (str, stream); | |
298 | break; | |
299 | } | |
300 | case scm_tc7_vector: | |
301 | { | |
302 | int len = SCM_LENGTH (svalue); | |
303 | int i; | |
304 | LONGEST elements = SCM_CDR (svalue); | |
305 | fputs_filtered ("#(", stream); | |
306 | for (i = 0; i < len; ++i) | |
307 | { | |
308 | if (i > 0) | |
309 | fputs_filtered (" ", stream); | |
310 | scm_scmval_print (scm_get_field (elements, i), stream, format, | |
311 | deref_ref, recurse + 1, pretty); | |
312 | } | |
313 | fputs_filtered (")", stream); | |
314 | } | |
315 | break; | |
316 | #if 0 | |
317 | case tc7_lvector: | |
318 | { | |
319 | SCM result; | |
320 | SCM hook; | |
321 | hook = scm_get_lvector_hook (exp, LV_PRINT_FN); | |
322 | if (hook == BOOL_F) | |
323 | { | |
324 | scm_puts ("#<locked-vector ", port); | |
325 | scm_intprint (CDR (exp), 16, port); | |
326 | scm_puts (">", port); | |
327 | } | |
328 | else | |
329 | { | |
330 | result | |
331 | = scm_apply (hook, | |
332 | scm_listify (exp, port, | |
333 | (writing ? BOOL_T : BOOL_F), | |
334 | SCM_UNDEFINED), | |
335 | EOL); | |
336 | if (result == BOOL_F) | |
337 | goto punk; | |
338 | } | |
339 | break; | |
340 | } | |
341 | break; | |
342 | case tc7_bvect: | |
343 | case tc7_ivect: | |
344 | case tc7_uvect: | |
345 | case tc7_fvect: | |
346 | case tc7_dvect: | |
347 | case tc7_cvect: | |
348 | scm_raprin1 (exp, port, writing); | |
349 | break; | |
350 | #endif | |
351 | case scm_tcs_subrs: | |
352 | { | |
353 | int index = SCM_CAR (svalue) >> 8; | |
354 | #if 1 | |
355 | char str[20]; | |
356 | sprintf (str, "#%d", index); | |
357 | #else | |
358 | char *str = index ? SCM_CHARS (scm_heap_org + index) : ""; | |
359 | #define SCM_CHARS(x) ((char *)(SCM_CDR(x))) | |
360 | char *str = CHARS (SNAME (exp)); | |
361 | #endif | |
362 | fprintf_filtered (stream, "#<primitive-procedure %s>", | |
363 | str); | |
364 | } | |
365 | break; | |
366 | #if 0 | |
367 | #ifdef CCLO | |
368 | case tc7_cclo: | |
369 | scm_puts ("#<compiled-closure ", port); | |
370 | scm_iprin1 (CCLO_SUBR (exp), port, writing); | |
371 | scm_putc ('>', port); | |
372 | break; | |
373 | #endif | |
374 | case tc7_contin: | |
375 | fprintf_filtered (stream, "#<continuation %d @ #X%lx >", | |
376 | LENGTH (svalue), | |
377 | (long) CHARS (svalue)); | |
378 | break; | |
379 | case tc7_port: | |
380 | i = PTOBNUM (exp); | |
381 | if (i < scm_numptob | |
382 | && scm_ptobs[i].print | |
383 | && (scm_ptobs[i].print) (exp, port, writing)) | |
384 | break; | |
385 | goto punk; | |
386 | case tc7_smob: | |
387 | i = SMOBNUM (exp); | |
388 | if (i < scm_numsmob && scm_smobs[i].print | |
389 | && (scm_smobs[i].print) (exp, port, writing)) | |
390 | break; | |
391 | goto punk; | |
392 | #endif | |
393 | default: | |
394 | #if 0 | |
395 | punk: | |
396 | #endif | |
397 | scm_ipruk ("type", svalue, stream); | |
398 | } | |
399 | break; | |
400 | } | |
401 | } | |
402 | ||
403 | int | |
404 | scm_val_print (struct type *type, const gdb_byte *valaddr, | |
405 | int embedded_offset, CORE_ADDR address, | |
406 | struct ui_file *stream, int format, int deref_ref, | |
407 | int recurse, enum val_prettyprint pretty) | |
408 | { | |
409 | if (is_scmvalue_type (type)) | |
410 | { | |
411 | LONGEST svalue = extract_signed_integer (valaddr, TYPE_LENGTH (type)); | |
412 | ||
413 | if (scm_inferior_print (svalue, stream, format, | |
414 | deref_ref, recurse, pretty) >= 0) | |
415 | { | |
416 | } | |
417 | else | |
418 | { | |
419 | scm_scmval_print (svalue, stream, format, | |
420 | deref_ref, recurse, pretty); | |
421 | } | |
422 | ||
423 | gdb_flush (stream); | |
424 | return (0); | |
425 | } | |
426 | else | |
427 | { | |
428 | return c_val_print (type, valaddr, 0, address, stream, format, | |
429 | deref_ref, recurse, pretty); | |
430 | } | |
431 | } | |
432 | ||
433 | int | |
434 | scm_value_print (struct value *val, struct ui_file *stream, int format, | |
435 | enum val_prettyprint pretty) | |
436 | { | |
437 | return (common_val_print (val, stream, format, 1, 0, pretty)); | |
438 | } |