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;
141 fputs_filtered ("...", stream);
144 scm_scmval_print (type, SCM_CAR (svalue), stream, recurse + 1, options);
145 svalue = SCM_CDR (svalue);
146 for (; SCM_NIMP (svalue); svalue = SCM_CDR (svalue))
148 if (SCM_NECONSP (svalue))
150 fputs_filtered (" ", stream);
153 fputs_filtered ("...", stream);
156 scm_scmval_print (type, SCM_CAR (svalue), stream, recurse + 1, options);
158 if (SCM_NNULLP (svalue))
160 fputs_filtered (" . ", stream);
161 scm_scmval_print (type, svalue, stream, recurse + 1, options);
163 #undef SCM_BYTE_ORDER
168 scm_ipruk (char *hdr, struct type *type, LONGEST ptr,
169 struct ui_file *stream)
171 #define SCM_SIZE (TYPE_LENGTH (type))
172 #define SCM_BYTE_ORDER (gdbarch_byte_order (get_type_arch (type)))
173 fprintf_filtered (stream, "#<unknown-%s", hdr);
175 fprintf_filtered (stream, " (0x%lx . 0x%lx) @",
176 (long) SCM_CAR (ptr), (long) SCM_CDR (ptr));
177 fprintf_filtered (stream, " 0x%s>", phex_nz (ptr, SCM_SIZE));
178 #undef SCM_BYTE_ORDER
183 scm_scmval_print (struct type *type, LONGEST svalue,
184 struct ui_file *stream, int recurse,
185 const struct value_print_options *options)
187 struct gdbarch *gdbarch = get_type_arch (type);
189 #define SCM_SIZE (TYPE_LENGTH (type))
190 #define SCM_BYTE_ORDER (gdbarch_byte_order (gdbarch))
192 switch (7 & (int) svalue)
196 print_longest (stream,
197 options->format ? options->format : 'd',
201 if (SCM_ICHRP (svalue))
203 svalue = SCM_ICHR (svalue);
204 scm_printchar (svalue, builtin_type (gdbarch)->builtin_char,
208 else if (SCM_IFLAGP (svalue)
209 && (SCM_ISYMNUM (svalue)
210 < (sizeof scm_isymnames / sizeof (char *))))
212 fputs_filtered (SCM_ISYMCHARS (svalue), stream);
215 else if (SCM_ILOCP (svalue))
217 fprintf_filtered (stream, "#@%ld%c%ld",
218 (long) SCM_IFRAME (svalue),
219 SCM_ICDRP (svalue) ? '-' : '+',
220 (long) SCM_IDIST (svalue));
228 svalue = SCM_CAR (svalue - 1);
232 scm_ipruk ("immediate", type, svalue, stream);
236 switch (SCM_TYP7 (svalue))
238 case scm_tcs_cons_gloc:
239 if (SCM_CDR (SCM_CAR (svalue) - 1L) == 0)
245 fputs_filtered ("#<latte ", stream);
247 fputs_filtered ("???", stream);
249 name = ((SCM n *) (STRUCT_TYPE (exp)))[struct_i_name];
250 scm_lfwrite (CHARS (name),
251 (sizet) sizeof (char),
252 (sizet) LENGTH (name),
255 fprintf_filtered (stream, " #X%s>", phex_nz (svalue, SCM_SIZE));
258 case scm_tcs_cons_imcar:
259 case scm_tcs_cons_nimcar:
260 fputs_filtered ("(", stream);
261 scm_scmlist_print (type, svalue, stream, recurse + 1, options);
262 fputs_filtered (")", stream);
264 case scm_tcs_closures:
265 fputs_filtered ("#<CLOSURE ", stream);
266 scm_scmlist_print (type, SCM_CODE (svalue), stream,
267 recurse + 1, options);
268 fputs_filtered (">", stream);
272 int len = SCM_LENGTH (svalue);
273 CORE_ADDR addr = (CORE_ADDR) SCM_CDR (svalue);
278 int truncate = options->print_max && len > (int) options->print_max;
280 len = options->print_max;
281 fputs_filtered ("\"", stream);
282 for (; done < len; done += buf_size)
284 buf_size = min (len - done, 64);
285 read_memory (addr + done, buffer, buf_size);
287 for (i = 0; i < buf_size; ++i)
292 fputs_filtered ("\\", stream);
294 fprintf_filtered (stream, "%c", buffer[i]);
297 fputs_filtered (truncate ? "...\"" : "\"", stream);
301 case scm_tcs_symbols:
303 int len = SCM_LENGTH (svalue);
305 char *str = alloca (len);
306 read_memory (SCM_CDR (svalue), (gdb_byte *) str, len + 1);
307 /* Should handle weird characters FIXME */
309 fputs_filtered (str, stream);
314 int len = SCM_LENGTH (svalue);
316 LONGEST elements = SCM_CDR (svalue);
319 fputs_filtered ("#(", stream);
320 for (i = 0; i < len; ++i)
323 fputs_filtered (" ", stream);
324 val = scm_get_field (elements, i, SCM_SIZE, SCM_BYTE_ORDER);
325 scm_scmval_print (type, val, stream, recurse + 1, options);
327 fputs_filtered (")", stream);
336 hook = scm_get_lvector_hook (exp, LV_PRINT_FN);
339 scm_puts ("#<locked-vector ", port);
340 scm_intprint (CDR (exp), 16, port);
341 scm_puts (">", port);
347 scm_listify (exp, port,
348 (writing ? BOOL_T : BOOL_F),
351 if (result == BOOL_F)
363 scm_raprin1 (exp, port, writing);
368 int index = SCM_CAR (svalue) >> 8;
371 sprintf (str, "#%d", index);
373 char *str = index ? SCM_CHARS (scm_heap_org + index) : "";
374 #define SCM_CHARS(x) ((char *)(SCM_CDR(x)))
375 char *str = CHARS (SNAME (exp));
378 fprintf_filtered (stream, "#<primitive-procedure %s>",
385 scm_puts ("#<compiled-closure ", port);
386 scm_iprin1 (CCLO_SUBR (exp), port, writing);
387 scm_putc ('>', port);
391 fprintf_filtered (stream, "#<continuation %d @ #X%lx >",
393 (long) CHARS (svalue));
398 && scm_ptobs[i].print
399 && (scm_ptobs[i].print) (exp, port, writing))
404 if (i < scm_numsmob && scm_smobs[i].print
405 && (scm_smobs[i].print) (exp, port, writing))
413 scm_ipruk ("type", type, svalue, stream);
417 #undef SCM_BYTE_ORDER
422 scm_val_print (struct type *type, const gdb_byte *valaddr,
423 int embedded_offset, CORE_ADDR address,
424 struct ui_file *stream, int recurse,
425 const struct value *val,
426 const struct value_print_options *options)
428 if (is_scmvalue_type (type)
429 && value_bits_valid (val, TARGET_CHAR_BIT * embedded_offset,
430 TARGET_CHAR_BIT * TYPE_LENGTH (type)))
432 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
434 = extract_signed_integer (valaddr, TYPE_LENGTH (type), byte_order);
436 if (scm_inferior_print (type, svalue, stream, recurse, options) >= 0)
441 scm_scmval_print (type, svalue, stream, recurse, options);
449 return c_val_print (type, valaddr, 0, address, stream, recurse,
455 scm_value_print (struct value *val, struct ui_file *stream,
456 const struct value_print_options *options)
458 struct value_print_options opts = *options;
461 return (common_val_print (val, stream, 0, &opts, current_language));