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 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 *, LONGEST, struct ui_file *);
36 static void scm_scmlist_print (LONGEST, struct ui_file *, int,
37 const struct value_print_options *);
38 static int scm_inferior_print (LONGEST, struct ui_file *, int,
39 const struct value_print_options *);
41 /* Prints the SCM value VALUE by invoking the inferior, if appropraite.
42 Returns >= 0 on success; return -1 if the inferior cannot/should not
46 scm_inferior_print (LONGEST value, struct ui_file *stream,
47 int recurse, const struct value_print_options *options)
50 struct gdbarch *gdbarch;
51 struct value *func, *arg, *result;
52 struct symbol *gdb_output_sym, *gdb_output_len_sym;
56 func = find_function_in_inferior ("gdb_print", &objf);
57 gdbarch = get_objfile_arch (objf);
58 arg = value_from_longest (builtin_type (gdbarch)->builtin_core_addr, value);
60 result = call_function_by_hand (func, 1, &arg);
61 ret = (int) value_as_long (result);
64 /* XXX: Should we cache these symbols? */
66 lookup_symbol_global ("gdb_output", NULL, NULL, VAR_DOMAIN);
68 lookup_symbol_global ("gdb_output_length", NULL, NULL, VAR_DOMAIN);
70 if ((gdb_output_sym == NULL) || (gdb_output_len_sym == NULL))
74 struct value *remote_buffer;
76 read_memory (SYMBOL_VALUE_ADDRESS (gdb_output_len_sym),
77 (char *) &output_len, sizeof (output_len));
79 output = (char *) alloca (output_len);
80 remote_buffer = value_at (builtin_type (gdbarch)->builtin_core_addr,
81 SYMBOL_VALUE_ADDRESS (gdb_output_sym));
82 read_memory (value_as_address (remote_buffer),
85 ui_file_write (stream, output, output_len);
92 /* {Names of immediate symbols}
93 * This table must agree with the declarations in scm.h: {Immediate Symbols}.*/
95 static char *scm_isymnames[] =
97 /* This table must agree with the declarations */
113 "literal-variable-ref",
114 "literal-variable-set!",
117 "call-with-current-continuation",
119 /* user visible ISYMS */
132 scm_scmlist_print (LONGEST svalue, struct ui_file *stream, int recurse,
133 const struct value_print_options *options)
135 unsigned int more = options->print_max;
138 fputs_filtered ("...", stream);
141 scm_scmval_print (SCM_CAR (svalue), stream, recurse + 1, options);
142 svalue = SCM_CDR (svalue);
143 for (; SCM_NIMP (svalue); svalue = SCM_CDR (svalue))
145 if (SCM_NECONSP (svalue))
147 fputs_filtered (" ", stream);
150 fputs_filtered ("...", stream);
153 scm_scmval_print (SCM_CAR (svalue), stream, recurse + 1, options);
155 if (SCM_NNULLP (svalue))
157 fputs_filtered (" . ", stream);
158 scm_scmval_print (svalue, stream, recurse + 1, options);
163 scm_ipruk (char *hdr, LONGEST ptr, struct ui_file *stream)
165 fprintf_filtered (stream, "#<unknown-%s", hdr);
166 #define SCM_SIZE TYPE_LENGTH (builtin_type_scm)
168 fprintf_filtered (stream, " (0x%lx . 0x%lx) @",
169 (long) SCM_CAR (ptr), (long) SCM_CDR (ptr));
170 fprintf_filtered (stream, " 0x%s>", paddr_nz (ptr));
174 scm_scmval_print (LONGEST svalue, struct ui_file *stream,
175 int recurse, const struct value_print_options *options)
178 switch (7 & (int) svalue)
182 print_longest (stream,
183 options->format ? options->format : 'd',
187 if (SCM_ICHRP (svalue))
189 svalue = SCM_ICHR (svalue);
190 scm_printchar (svalue, builtin_type (current_gdbarch)->builtin_char,
194 else if (SCM_IFLAGP (svalue)
195 && (SCM_ISYMNUM (svalue)
196 < (sizeof scm_isymnames / sizeof (char *))))
198 fputs_filtered (SCM_ISYMCHARS (svalue), stream);
201 else if (SCM_ILOCP (svalue))
203 fprintf_filtered (stream, "#@%ld%c%ld",
204 (long) SCM_IFRAME (svalue),
205 SCM_ICDRP (svalue) ? '-' : '+',
206 (long) SCM_IDIST (svalue));
214 svalue = SCM_CAR (svalue - 1);
218 scm_ipruk ("immediate", svalue, stream);
222 switch (SCM_TYP7 (svalue))
224 case scm_tcs_cons_gloc:
225 if (SCM_CDR (SCM_CAR (svalue) - 1L) == 0)
230 fputs_filtered ("#<latte ", stream);
232 fputs_filtered ("???", stream);
234 name = ((SCM n *) (STRUCT_TYPE (exp)))[struct_i_name];
235 scm_lfwrite (CHARS (name),
236 (sizet) sizeof (char),
237 (sizet) LENGTH (name),
240 fprintf_filtered (stream, " #X%s>", paddr_nz (svalue));
243 case scm_tcs_cons_imcar:
244 case scm_tcs_cons_nimcar:
245 fputs_filtered ("(", stream);
246 scm_scmlist_print (svalue, stream, recurse + 1, options);
247 fputs_filtered (")", stream);
249 case scm_tcs_closures:
250 fputs_filtered ("#<CLOSURE ", stream);
251 scm_scmlist_print (SCM_CODE (svalue), stream, recurse + 1, options);
252 fputs_filtered (">", stream);
256 int len = SCM_LENGTH (svalue);
257 CORE_ADDR addr = (CORE_ADDR) SCM_CDR (svalue);
262 int truncate = options->print_max && len > (int) options->print_max;
264 len = options->print_max;
265 fputs_filtered ("\"", stream);
266 for (; done < len; done += buf_size)
268 buf_size = min (len - done, 64);
269 read_memory (addr + done, buffer, buf_size);
271 for (i = 0; i < buf_size; ++i)
276 fputs_filtered ("\\", stream);
278 fprintf_filtered (stream, "%c", buffer[i]);
281 fputs_filtered (truncate ? "...\"" : "\"", stream);
285 case scm_tcs_symbols:
287 int len = SCM_LENGTH (svalue);
289 char *str = alloca (len);
290 read_memory (SCM_CDR (svalue), (gdb_byte *) str, len + 1);
291 /* Should handle weird characters FIXME */
293 fputs_filtered (str, stream);
298 int len = SCM_LENGTH (svalue);
300 LONGEST elements = SCM_CDR (svalue);
301 fputs_filtered ("#(", stream);
302 for (i = 0; i < len; ++i)
305 fputs_filtered (" ", stream);
306 scm_scmval_print (scm_get_field (elements, i), stream,
307 recurse + 1, options);
309 fputs_filtered (")", stream);
317 hook = scm_get_lvector_hook (exp, LV_PRINT_FN);
320 scm_puts ("#<locked-vector ", port);
321 scm_intprint (CDR (exp), 16, port);
322 scm_puts (">", port);
328 scm_listify (exp, port,
329 (writing ? BOOL_T : BOOL_F),
332 if (result == BOOL_F)
344 scm_raprin1 (exp, port, writing);
349 int index = SCM_CAR (svalue) >> 8;
352 sprintf (str, "#%d", index);
354 char *str = index ? SCM_CHARS (scm_heap_org + index) : "";
355 #define SCM_CHARS(x) ((char *)(SCM_CDR(x)))
356 char *str = CHARS (SNAME (exp));
358 fprintf_filtered (stream, "#<primitive-procedure %s>",
365 scm_puts ("#<compiled-closure ", port);
366 scm_iprin1 (CCLO_SUBR (exp), port, writing);
367 scm_putc ('>', port);
371 fprintf_filtered (stream, "#<continuation %d @ #X%lx >",
373 (long) CHARS (svalue));
378 && scm_ptobs[i].print
379 && (scm_ptobs[i].print) (exp, port, writing))
384 if (i < scm_numsmob && scm_smobs[i].print
385 && (scm_smobs[i].print) (exp, port, writing))
393 scm_ipruk ("type", svalue, stream);
400 scm_val_print (struct type *type, const gdb_byte *valaddr,
401 int embedded_offset, CORE_ADDR address,
402 struct ui_file *stream, int recurse,
403 const struct value_print_options *options)
405 if (is_scmvalue_type (type))
407 LONGEST svalue = extract_signed_integer (valaddr, TYPE_LENGTH (type));
409 if (scm_inferior_print (svalue, stream, recurse, options) >= 0)
414 scm_scmval_print (svalue, stream, recurse, options);
422 return c_val_print (type, valaddr, 0, address, stream, recurse, options);
427 scm_value_print (struct value *val, struct ui_file *stream,
428 const struct value_print_options *options)
430 struct value_print_options opts = *options;
432 return (common_val_print (val, stream, 0, &opts, current_language));