1 /* Scheme/Guile language support routines for GDB, the GNU debugger.
3 Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2005, 2007, 2008, 2009,
4 2010 Free Software Foundation, Inc.
6 This file is part of GDB.
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 3 of the License, or
11 (at your option) any later version.
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.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "expression.h"
25 #include "parser-defs.h"
35 static void scm_ipruk (char *, struct type *, LONGEST, struct ui_file *);
36 static void scm_scmval_print (struct type *, LONGEST, struct ui_file *,
37 int, const struct value_print_options *);
38 static void scm_scmlist_print (struct type *, LONGEST, struct ui_file *,
39 int, const struct value_print_options *);
40 static int scm_inferior_print (struct type *, LONGEST, struct ui_file *,
41 int, const struct value_print_options *);
43 /* Prints the SCM value VALUE by invoking the inferior, if appropraite.
44 Returns >= 0 on success; return -1 if the inferior cannot/should not
48 scm_inferior_print (struct type *type, LONGEST value, struct ui_file *stream,
49 int recurse, const struct value_print_options *options)
51 struct value *func, *arg, *result;
52 struct symbol *gdb_output_sym, *gdb_output_len_sym;
56 func = find_function_in_inferior ("gdb_print", NULL);
57 arg = value_from_longest (type, value);
59 result = call_function_by_hand (func, 1, &arg);
60 ret = (int) value_as_long (result);
63 /* XXX: Should we cache these symbols? */
65 lookup_symbol_global ("gdb_output", NULL, VAR_DOMAIN);
67 lookup_symbol_global ("gdb_output_length", NULL, VAR_DOMAIN);
69 if ((gdb_output_sym == NULL) || (gdb_output_len_sym == NULL))
73 struct value *remote_buffer;
75 read_memory (SYMBOL_VALUE_ADDRESS (gdb_output_len_sym),
76 (char *) &output_len, sizeof (output_len));
78 output = (char *) alloca (output_len);
79 remote_buffer = value_at (type,
80 SYMBOL_VALUE_ADDRESS (gdb_output_sym));
81 read_memory (value_as_address (remote_buffer),
84 ui_file_write (stream, output, output_len);
91 /* {Names of immediate symbols}
92 * This table must agree with the declarations in scm.h: {Immediate Symbols}.*/
94 static char *scm_isymnames[] =
96 /* This table must agree with the declarations */
112 "literal-variable-ref",
113 "literal-variable-set!",
116 "call-with-current-continuation",
118 /* user visible ISYMS */
131 scm_scmlist_print (struct type *type, LONGEST svalue,
132 struct ui_file *stream, int recurse,
133 const struct value_print_options *options)
135 #define SCM_SIZE (TYPE_LENGTH (type))
136 #define SCM_BYTE_ORDER (gdbarch_byte_order (get_type_arch (type)))
137 unsigned int more = options->print_max;
140 fputs_filtered ("...", stream);
143 scm_scmval_print (type, SCM_CAR (svalue), stream, recurse + 1, options);
144 svalue = SCM_CDR (svalue);
145 for (; SCM_NIMP (svalue); svalue = SCM_CDR (svalue))
147 if (SCM_NECONSP (svalue))
149 fputs_filtered (" ", stream);
152 fputs_filtered ("...", stream);
155 scm_scmval_print (type, SCM_CAR (svalue), stream, recurse + 1, options);
157 if (SCM_NNULLP (svalue))
159 fputs_filtered (" . ", stream);
160 scm_scmval_print (type, svalue, stream, recurse + 1, options);
162 #undef SCM_BYTE_ORDER
167 scm_ipruk (char *hdr, struct type *type, LONGEST ptr,
168 struct ui_file *stream)
170 #define SCM_SIZE (TYPE_LENGTH (type))
171 #define SCM_BYTE_ORDER (gdbarch_byte_order (get_type_arch (type)))
172 fprintf_filtered (stream, "#<unknown-%s", hdr);
174 fprintf_filtered (stream, " (0x%lx . 0x%lx) @",
175 (long) SCM_CAR (ptr), (long) SCM_CDR (ptr));
176 fprintf_filtered (stream, " 0x%s>", phex_nz (ptr, SCM_SIZE));
177 #undef SCM_BYTE_ORDER
182 scm_scmval_print (struct type *type, LONGEST svalue,
183 struct ui_file *stream, int recurse,
184 const struct value_print_options *options)
186 struct gdbarch *gdbarch = get_type_arch (type);
188 #define SCM_SIZE (TYPE_LENGTH (type))
189 #define SCM_BYTE_ORDER (gdbarch_byte_order (gdbarch))
191 switch (7 & (int) svalue)
195 print_longest (stream,
196 options->format ? options->format : 'd',
200 if (SCM_ICHRP (svalue))
202 svalue = SCM_ICHR (svalue);
203 scm_printchar (svalue, builtin_type (gdbarch)->builtin_char,
207 else if (SCM_IFLAGP (svalue)
208 && (SCM_ISYMNUM (svalue)
209 < (sizeof scm_isymnames / sizeof (char *))))
211 fputs_filtered (SCM_ISYMCHARS (svalue), stream);
214 else if (SCM_ILOCP (svalue))
216 fprintf_filtered (stream, "#@%ld%c%ld",
217 (long) SCM_IFRAME (svalue),
218 SCM_ICDRP (svalue) ? '-' : '+',
219 (long) SCM_IDIST (svalue));
227 svalue = SCM_CAR (svalue - 1);
231 scm_ipruk ("immediate", type, svalue, stream);
235 switch (SCM_TYP7 (svalue))
237 case scm_tcs_cons_gloc:
238 if (SCM_CDR (SCM_CAR (svalue) - 1L) == 0)
243 fputs_filtered ("#<latte ", stream);
245 fputs_filtered ("???", stream);
247 name = ((SCM n *) (STRUCT_TYPE (exp)))[struct_i_name];
248 scm_lfwrite (CHARS (name),
249 (sizet) sizeof (char),
250 (sizet) LENGTH (name),
253 fprintf_filtered (stream, " #X%s>", phex_nz (svalue, SCM_SIZE));
256 case scm_tcs_cons_imcar:
257 case scm_tcs_cons_nimcar:
258 fputs_filtered ("(", stream);
259 scm_scmlist_print (type, svalue, stream, recurse + 1, options);
260 fputs_filtered (")", stream);
262 case scm_tcs_closures:
263 fputs_filtered ("#<CLOSURE ", stream);
264 scm_scmlist_print (type, SCM_CODE (svalue), stream,
265 recurse + 1, options);
266 fputs_filtered (">", stream);
270 int len = SCM_LENGTH (svalue);
271 CORE_ADDR addr = (CORE_ADDR) SCM_CDR (svalue);
276 int truncate = options->print_max && len > (int) options->print_max;
278 len = options->print_max;
279 fputs_filtered ("\"", stream);
280 for (; done < len; done += buf_size)
282 buf_size = min (len - done, 64);
283 read_memory (addr + done, buffer, buf_size);
285 for (i = 0; i < buf_size; ++i)
290 fputs_filtered ("\\", stream);
292 fprintf_filtered (stream, "%c", buffer[i]);
295 fputs_filtered (truncate ? "...\"" : "\"", stream);
299 case scm_tcs_symbols:
301 int len = SCM_LENGTH (svalue);
303 char *str = alloca (len);
304 read_memory (SCM_CDR (svalue), (gdb_byte *) str, len + 1);
305 /* Should handle weird characters FIXME */
307 fputs_filtered (str, stream);
312 int len = SCM_LENGTH (svalue);
314 LONGEST elements = SCM_CDR (svalue);
316 fputs_filtered ("#(", stream);
317 for (i = 0; i < len; ++i)
320 fputs_filtered (" ", stream);
321 val = scm_get_field (elements, i, SCM_SIZE, SCM_BYTE_ORDER);
322 scm_scmval_print (type, val, stream, recurse + 1, options);
324 fputs_filtered (")", stream);
332 hook = scm_get_lvector_hook (exp, LV_PRINT_FN);
335 scm_puts ("#<locked-vector ", port);
336 scm_intprint (CDR (exp), 16, port);
337 scm_puts (">", port);
343 scm_listify (exp, port,
344 (writing ? BOOL_T : BOOL_F),
347 if (result == BOOL_F)
359 scm_raprin1 (exp, port, writing);
364 int index = SCM_CAR (svalue) >> 8;
367 sprintf (str, "#%d", index);
369 char *str = index ? SCM_CHARS (scm_heap_org + index) : "";
370 #define SCM_CHARS(x) ((char *)(SCM_CDR(x)))
371 char *str = CHARS (SNAME (exp));
373 fprintf_filtered (stream, "#<primitive-procedure %s>",
380 scm_puts ("#<compiled-closure ", port);
381 scm_iprin1 (CCLO_SUBR (exp), port, writing);
382 scm_putc ('>', port);
386 fprintf_filtered (stream, "#<continuation %d @ #X%lx >",
388 (long) CHARS (svalue));
393 && scm_ptobs[i].print
394 && (scm_ptobs[i].print) (exp, port, writing))
399 if (i < scm_numsmob && scm_smobs[i].print
400 && (scm_smobs[i].print) (exp, port, writing))
408 scm_ipruk ("type", type, svalue, stream);
412 #undef SCM_BYTE_ORDER
417 scm_val_print (struct type *type, const gdb_byte *valaddr,
418 int embedded_offset, CORE_ADDR address,
419 struct ui_file *stream, int recurse,
420 const struct value_print_options *options)
422 if (is_scmvalue_type (type))
424 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
426 = extract_signed_integer (valaddr, TYPE_LENGTH (type), byte_order);
428 if (scm_inferior_print (type, svalue, stream, recurse, options) >= 0)
433 scm_scmval_print (type, svalue, stream, recurse, options);
441 return c_val_print (type, valaddr, 0, address, stream, recurse, options);
446 scm_value_print (struct value *val, struct ui_file *stream,
447 const struct value_print_options *options)
449 struct value_print_options opts = *options;
451 return (common_val_print (val, stream, 0, &opts, current_language));