1 /* Character set conversion support for GDB.
3 Copyright (C) 2001, 2003, 2007, 2008, 2009, 2010
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 "gdb_assert.h"
25 #include "gdb_obstack.h"
27 #include "charset-list.h"
30 #include "arch-utils.h"
33 #include "gdb_string.h"
40 /* How GDB's character set support works
42 GDB has three global settings:
44 - The `current host character set' is the character set GDB should
45 use in talking to the user, and which (hopefully) the user's
46 terminal knows how to display properly. Most users should not
49 - The `current target character set' is the character set the
50 program being debugged uses.
52 - The `current target wide character set' is the wide character set
53 the program being debugged uses, that is, the encoding used for
56 There are commands to set each of these, and mechanisms for
57 choosing reasonable default values. GDB has a global list of
58 character sets that it can use as its host or target character
61 The header file `charset.h' declares various functions that
62 different pieces of GDB need to perform tasks like:
64 - printing target strings and characters to the user's terminal
65 (mostly target->host conversions),
67 - building target-appropriate representations of strings and
68 characters the user enters in expressions (mostly host->target
73 To avoid excessive code duplication and maintenance efforts,
74 GDB simply requires a capable iconv function. Users on platforms
75 without a suitable iconv can use the GNU iconv library. */
80 /* Provide a phony iconv that does as little as possible. Also,
81 arrange for there to be a single available character set. */
83 #undef GDB_DEFAULT_HOST_CHARSET
84 #define GDB_DEFAULT_HOST_CHARSET "ISO-8859-1"
85 #define GDB_DEFAULT_TARGET_CHARSET "ISO-8859-1"
86 #define GDB_DEFAULT_TARGET_WIDE_CHARSET "ISO-8859-1"
87 #undef DEFAULT_CHARSET_NAMES
88 #define DEFAULT_CHARSET_NAMES GDB_DEFAULT_HOST_CHARSET ,
97 #define ICONV_CONST const
99 /* Some systems don't have EILSEQ, so we define it here, but not as
100 EINVAL, because callers of `iconv' want to distinguish EINVAL and
101 EILSEQ. This is what iconv.h from libiconv does as well. Note
102 that wchar.h may also define EILSEQ, so this needs to be after we
103 include wchar.h, which happens in defs.h through gdb_wchar.h. */
105 #define EILSEQ ENOENT
109 iconv_open (const char *to, const char *from)
111 /* We allow conversions from UTF-32BE, wchar_t, and the host charset.
112 We allow conversions to wchar_t and the host charset. */
113 if (strcmp (from, "UTF-32BE") && strcmp (from, "wchar_t")
114 && strcmp (from, GDB_DEFAULT_HOST_CHARSET))
116 if (strcmp (to, "wchar_t") && strcmp (to, GDB_DEFAULT_HOST_CHARSET))
119 /* Return 1 if we are converting from UTF-32BE, 0 otherwise. This is
120 used as a flag in calls to iconv. */
121 return !strcmp (from, "UTF-32BE");
125 iconv_close (iconv_t arg)
131 iconv (iconv_t utf_flag, const char **inbuf, size_t *inbytesleft,
132 char **outbuf, size_t *outbytesleft)
136 while (*inbytesleft >= 4)
141 for (j = 0; j < 4; ++j)
144 c += (*inbuf)[j] & 0xff;
159 if (*inbytesleft < 4)
167 /* In all other cases we simply copy input bytes to the
169 size_t amt = *inbytesleft;
171 if (amt > *outbytesleft)
173 memcpy (*outbuf, *inbuf, amt);
177 *outbytesleft -= amt;
186 /* The number of non-reversible conversions -- but they were all
195 /* The global lists of character sets and translations. */
198 #ifndef GDB_DEFAULT_TARGET_CHARSET
199 #define GDB_DEFAULT_TARGET_CHARSET "ISO-8859-1"
202 #ifndef GDB_DEFAULT_TARGET_WIDE_CHARSET
203 #define GDB_DEFAULT_TARGET_WIDE_CHARSET "UTF-32"
206 static const char *auto_host_charset_name = GDB_DEFAULT_HOST_CHARSET;
207 static const char *host_charset_name = "auto";
209 show_host_charset_name (struct ui_file *file, int from_tty,
210 struct cmd_list_element *c,
213 if (!strcmp (value, "auto"))
214 fprintf_filtered (file,
215 _("The host character set is \"auto; currently %s\".\n"),
216 auto_host_charset_name);
218 fprintf_filtered (file, _("The host character set is \"%s\".\n"), value);
221 static const char *target_charset_name = "auto";
223 show_target_charset_name (struct ui_file *file, int from_tty,
224 struct cmd_list_element *c, const char *value)
226 if (!strcmp (value, "auto"))
227 fprintf_filtered (file,
228 _("The target character set is \"auto; "
229 "currently %s\".\n"),
230 gdbarch_auto_charset (get_current_arch ()));
232 fprintf_filtered (file, _("The target character set is \"%s\".\n"),
236 static const char *target_wide_charset_name = "auto";
238 show_target_wide_charset_name (struct ui_file *file, int from_tty,
239 struct cmd_list_element *c, const char *value)
241 if (!strcmp (value, "auto"))
242 fprintf_filtered (file,
243 _("The target wide character set is \"auto; "
244 "currently %s\".\n"),
245 gdbarch_auto_wide_charset (get_current_arch ()));
247 fprintf_filtered (file, _("The target wide character set is \"%s\".\n"),
251 static const char *default_charset_names[] =
253 DEFAULT_CHARSET_NAMES
257 static const char **charset_enum;
260 /* If the target wide character set has big- or little-endian
261 variants, these are the corresponding names. */
262 static const char *target_wide_charset_be_name;
263 static const char *target_wide_charset_le_name;
265 /* The architecture for which the BE- and LE-names are valid. */
266 static struct gdbarch *be_le_arch;
268 /* A helper function which sets the target wide big- and little-endian
269 character set names, if possible. */
272 set_be_le_names (struct gdbarch *gdbarch)
275 const char *target_wide;
277 if (be_le_arch == gdbarch)
279 be_le_arch = gdbarch;
281 target_wide_charset_le_name = NULL;
282 target_wide_charset_be_name = NULL;
284 target_wide = target_wide_charset_name;
285 if (!strcmp (target_wide, "auto"))
286 target_wide = gdbarch_auto_wide_charset (gdbarch);
288 len = strlen (target_wide);
289 for (i = 0; charset_enum[i]; ++i)
291 if (strncmp (target_wide, charset_enum[i], len))
293 if ((charset_enum[i][len] == 'B'
294 || charset_enum[i][len] == 'L')
295 && charset_enum[i][len + 1] == 'E'
296 && charset_enum[i][len + 2] == '\0')
298 if (charset_enum[i][len] == 'B')
299 target_wide_charset_be_name = charset_enum[i];
301 target_wide_charset_le_name = charset_enum[i];
306 /* 'Set charset', 'set host-charset', 'set target-charset', 'set
307 target-wide-charset', 'set charset' sfunc's. */
310 validate (struct gdbarch *gdbarch)
313 const char *host_cset = host_charset ();
314 const char *target_cset = target_charset (gdbarch);
315 const char *target_wide_cset = target_wide_charset_name;
317 if (!strcmp (target_wide_cset, "auto"))
318 target_wide_cset = gdbarch_auto_wide_charset (gdbarch);
320 desc = iconv_open (target_wide_cset, host_cset);
321 if (desc == (iconv_t) -1)
322 error ("Cannot convert between character sets `%s' and `%s'",
323 target_wide_cset, host_cset);
326 desc = iconv_open (target_cset, host_cset);
327 if (desc == (iconv_t) -1)
328 error ("Cannot convert between character sets `%s' and `%s'",
329 target_cset, host_cset);
332 /* Clear the cache. */
336 /* This is the sfunc for the 'set charset' command. */
338 set_charset_sfunc (char *charset, int from_tty, struct cmd_list_element *c)
340 /* CAREFUL: set the target charset here as well. */
341 target_charset_name = host_charset_name;
342 validate (get_current_arch ());
345 /* 'set host-charset' command sfunc. We need a wrapper here because
346 the function needs to have a specific signature. */
348 set_host_charset_sfunc (char *charset, int from_tty,
349 struct cmd_list_element *c)
351 validate (get_current_arch ());
354 /* Wrapper for the 'set target-charset' command. */
356 set_target_charset_sfunc (char *charset, int from_tty,
357 struct cmd_list_element *c)
359 validate (get_current_arch ());
362 /* Wrapper for the 'set target-wide-charset' command. */
364 set_target_wide_charset_sfunc (char *charset, int from_tty,
365 struct cmd_list_element *c)
367 validate (get_current_arch ());
370 /* sfunc for the 'show charset' command. */
372 show_charset (struct ui_file *file, int from_tty, struct cmd_list_element *c,
375 show_host_charset_name (file, from_tty, c, host_charset_name);
376 show_target_charset_name (file, from_tty, c, target_charset_name);
377 show_target_wide_charset_name (file, from_tty, c, target_wide_charset_name);
381 /* Accessor functions. */
386 if (!strcmp (host_charset_name, "auto"))
387 return auto_host_charset_name;
388 return host_charset_name;
392 target_charset (struct gdbarch *gdbarch)
394 if (!strcmp (target_charset_name, "auto"))
395 return gdbarch_auto_charset (gdbarch);
396 return target_charset_name;
400 target_wide_charset (struct gdbarch *gdbarch)
402 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
404 set_be_le_names (gdbarch);
405 if (byte_order == BFD_ENDIAN_BIG)
407 if (target_wide_charset_be_name)
408 return target_wide_charset_be_name;
412 if (target_wide_charset_le_name)
413 return target_wide_charset_le_name;
416 if (!strcmp (target_wide_charset_name, "auto"))
417 return gdbarch_auto_wide_charset (gdbarch);
419 return target_wide_charset_name;
423 /* Host character set management. For the time being, we assume that
424 the host character set is some superset of ASCII. */
427 host_letter_to_control_character (char c)
434 /* Convert a host character, C, to its hex value. C must already have
435 been validated using isxdigit. */
438 host_hex_value (char c)
442 if (c >= 'a' && c <= 'f')
444 gdb_assert (c >= 'A' && c <= 'F');
449 /* Public character management functions. */
451 /* A cleanup function which is run to close an iconv descriptor. */
454 cleanup_iconv (void *p)
457 iconv_close (*descp);
461 convert_wchar (gdb_wchar_t **pinp, size_t *pinleft, char **poutp, size_t *poutleft)
463 char tmp[MB_CUR_MAX];
466 while (*pinleft >= sizeof(gdb_wchar_t))
468 r = wctomb(tmp, **pinp);
471 perror_with_name ("Internal error while converting character sets");
479 memcpy(*poutp, tmp, r);
483 *pinleft -= sizeof(gdb_wchar_t);
493 convert_between_encodings (const char *from, const char *to,
494 const gdb_byte *bytes, unsigned int num_bytes,
495 int width, struct obstack *output,
496 enum transliterations translit)
499 struct cleanup *cleanups;
502 unsigned int space_request;
505 /* Often, the host and target charsets will be the same. */
506 if (!strcmp (from, to))
508 obstack_grow (output, bytes, num_bytes);
512 if (!strcmp (from, "wchar_t"))
514 if (strcmp (to, host_charset ()))
515 perror_with_name ("Converting character sets");
516 cleanups = NULL; /* silence gcc complaints */
521 desc = iconv_open (to, from);
522 if (desc == (iconv_t) -1)
523 perror_with_name ("Converting character sets");
524 cleanups = make_cleanup (cleanup_iconv, &desc);
528 inp = (char *) bytes;
530 space_request = num_bytes;
538 old_size = obstack_object_size (output);
539 obstack_blank (output, space_request);
541 outp = obstack_base (output) + old_size;
542 outleft = space_request;
545 r = convert_wchar((gdb_wchar_t **)(void *)&inp, &inleft, &outp, &outleft);
547 r = iconv (desc, (ICONV_CONST char **) &inp, &inleft, &outp, &outleft);
549 /* Now make sure that the object on the obstack only includes
550 bytes we have converted. */
551 obstack_blank (output, - (int) outleft);
553 if (r == (size_t) -1)
561 /* Invalid input sequence. */
562 if (translit == translit_none)
563 error (_("Could not convert character to `%s' character set"),
566 /* We emit escape sequence for the bytes, skip them,
568 for (i = 0; i < width; ++i)
572 sprintf (octal, "\\%.3o", *inp & 0xff);
573 obstack_grow_str (output, octal);
582 /* We ran out of space in the output buffer. Make it
583 bigger next time around. */
588 /* Incomplete input sequence. FIXME: ought to report this
589 to the caller somehow. */
594 perror_with_name ("Internal error while converting character sets");
600 do_cleanups (cleanups);
605 /* An iterator that returns host wchar_t's from a target string. */
606 struct wchar_iterator
608 /* The underlying iconv descriptor. */
611 /* The input string. This is updated as convert characters. */
613 /* The number of bytes remaining in the input. */
616 /* The width of an input character. */
619 /* The intermediate buffer */
624 /* The output byte. */
628 /* Create a new iterator. */
629 struct wchar_iterator *
630 make_wchar_iterator (const gdb_byte *input, size_t bytes, const char *charset,
633 struct wchar_iterator *result;
636 desc = iconv_open (host_charset (), charset);
637 if (desc == (iconv_t) -1)
638 perror_with_name ("Converting character sets");
640 result = XNEW (struct wchar_iterator);
642 result->input = (char *) input;
643 result->bytes = bytes;
644 result->width = width;
646 result->inter = XNEW (char);
647 result->inter_size = 1;
648 result->inter_len = 0;
654 do_cleanup_iterator (void *p)
656 struct wchar_iterator *iter = p;
658 iconv_close (iter->desc);
664 make_cleanup_wchar_iterator (struct wchar_iterator *iter)
666 return make_cleanup (do_cleanup_iterator, iter);
670 wchar_iterate (struct wchar_iterator *iter,
671 enum wchar_iterate_result *out_result,
672 gdb_wchar_t **out_chars,
673 const gdb_byte **ptr,
677 char *orig_inptr = iter->input;
678 size_t orig_in = iter->bytes;
680 /* Try to convert some characters. At first we try to convert just
681 a single character. The reason for this is that iconv does not
682 necessarily update its outgoing arguments when it encounters an
683 invalid input sequence -- but we want to reliably report this to
684 our caller so it can emit an escape sequence. */
685 while (iter->inter_len == 0 && iter->bytes > 0)
688 while (iter->bytes > 0)
690 char *outptr = (char *) &iter->inter[iter->inter_len];
691 size_t out_avail = out_request;
693 size_t r = iconv (iter->desc,
694 (ICONV_CONST char **) &iter->input, &iter->bytes,
695 &outptr, &out_avail);
696 if (r == (size_t) -1)
701 /* Invalid input sequence. Skip it, and let the caller
703 *out_result = wchar_iterate_invalid;
706 iter->input += iter->width;
707 iter->bytes -= iter->width;
711 /* We ran out of space. We still might have converted a
712 character; if so, return it. Otherwise, grow the
713 buffer and try again. */
714 if (out_avail < out_request)
718 if (out_request > iter->inter_size)
720 iter->inter_size = out_request;
721 iter->inter = xrealloc (iter->inter, out_request);
726 /* Incomplete input sequence. Let the caller know, and
727 arrange for future calls to see EOF. */
728 *out_result = wchar_iterate_incomplete;
735 perror_with_name ("Internal error while converting character sets");
739 /* We converted something. */
740 iter->inter_len += out_request - out_avail;
745 if (iter->inter_len > 0)
749 /* Now convert from our charset to wchar_t */
750 r = mbtowc(&iter->out, &iter->inter[0], iter->inter_len);
752 /* This must never happen: we just converted to a valid charset! */
754 perror_with_name ("Internal error while converting character sets");
756 /* NUL bytes are alright */
760 iter->inter_len -= r;
761 memmove(&iter->inter[0], &iter->inter[r], iter->inter_len);
763 *out_result = wchar_iterate_ok;
764 *out_chars = &iter->out;
766 *len = orig_in - iter->bytes;
771 *out_result = wchar_iterate_eof;
776 /* The charset.c module initialization function. */
778 extern initialize_file_ftype _initialize_charset; /* -Wmissing-prototype */
780 DEF_VEC_P (char_ptr);
782 static VEC (char_ptr) *charsets;
787 find_charset_names (void)
789 VEC_safe_push (char_ptr, charsets, GDB_DEFAULT_HOST_CHARSET);
790 VEC_safe_push (char_ptr, charsets, NULL);
793 #else /* PHONY_ICONV */
795 /* Sometimes, libiconv redefines iconvlist as libiconvlist -- but
796 provides different symbols in the static and dynamic libraries.
797 So, configure may see libiconvlist but not iconvlist. But, calling
798 iconvlist is the right thing to do and will work. Hence we do a
799 check here but unconditionally call iconvlist below. */
800 #if defined (HAVE_ICONVLIST) || defined (HAVE_LIBICONVLIST)
802 /* A helper function that adds some character sets to the vector of
803 all character sets. This is a callback function for iconvlist. */
806 add_one (unsigned int count, const char *const *names, void *data)
810 for (i = 0; i < count; ++i)
811 VEC_safe_push (char_ptr, charsets, xstrdup (names[i]));
817 find_charset_names (void)
819 iconvlist (add_one, NULL);
820 VEC_safe_push (char_ptr, charsets, NULL);
825 /* Return non-zero if LINE (output from iconv) should be ignored.
826 Older iconv programs (e.g. 2.2.2) include the human readable
827 introduction even when stdout is not a tty. Newer versions omit
828 the intro if stdout is not a tty. */
831 ignore_line_p (const char *line)
833 /* This table is used to filter the output. If this text appears
834 anywhere in the line, it is ignored (strstr is used). */
835 static const char * const ignore_lines[] =
840 "listed with several",
845 for (i = 0; ignore_lines[i] != NULL; ++i)
847 if (strstr (line, ignore_lines[i]) != NULL)
855 find_charset_names (void)
857 struct pex_obj *child;
861 struct gdb_environ *iconv_env;
863 /* Older iconvs, e.g. 2.2.2, don't omit the intro text if stdout is not
864 a tty. We need to recognize it and ignore it. This text is subject
865 to translation, so force LANGUAGE=C. */
866 iconv_env = make_environ ();
867 init_environ (iconv_env);
868 set_in_environ (iconv_env, "LANGUAGE", "C");
869 set_in_environ (iconv_env, "LC_ALL", "C");
871 child = pex_init (PEX_USE_PIPES, "iconv", NULL);
876 /* Note that we simply ignore errors here. */
877 if (!pex_run_in_environment (child, PEX_SEARCH | PEX_STDERR_TO_STDOUT,
878 "iconv", args, environ_vector (iconv_env),
881 FILE *in = pex_read_output (child, 0);
883 /* POSIX says that iconv -l uses an unspecified format. We
884 parse the glibc and libiconv formats; feel free to add others
889 /* The size of buf is chosen arbitrarily. */
894 r = fgets (buf, sizeof (buf), in);
900 if (ignore_line_p (r))
903 /* Strip off the newline. */
905 /* Strip off one or two '/'s. glibc will print lines like
906 "8859_7//", but also "10646-1:1993/UCS4/". */
907 if (buf[len - 1] == '/')
909 if (buf[len - 1] == '/')
913 /* libiconv will print multiple entries per line, separated
914 by spaces. Older iconvs will print multiple entries per line,
915 indented by two spaces, and separated by ", "
916 (i.e. the human readable form). */
923 /* Skip leading blanks. */
924 for (p = start; *p && *p == ' '; ++p)
927 /* Find the next space, comma, or end-of-line. */
928 for ( ; *p && *p != ' ' && *p != ','; ++p)
930 /* Ignore an empty result. */
935 VEC_safe_push (char_ptr, charsets, xstrdup (start));
938 /* Skip any extra spaces. */
939 for (start = p + 1; *start && *start == ' '; ++start)
944 if (pex_get_status (child, 1, &status)
945 && WIFEXITED (status) && !WEXITSTATUS (status))
951 free_environ (iconv_env);
955 /* Some error occurred, so drop the vector. */
958 for (ix = 0; VEC_iterate (char_ptr, charsets, ix, elt); ++ix)
960 VEC_truncate (char_ptr, charsets, 0);
963 VEC_safe_push (char_ptr, charsets, NULL);
966 #endif /* HAVE_ICONVLIST || HAVE_LIBICONVLIST */
967 #endif /* PHONY_ICONV */
969 /* The "auto" target charset used by default_auto_charset. */
970 static const char *auto_target_charset_name = GDB_DEFAULT_TARGET_CHARSET;
973 default_auto_charset (void)
975 return auto_target_charset_name;
979 default_auto_wide_charset (void)
981 return GDB_DEFAULT_TARGET_WIDE_CHARSET;
985 _initialize_charset (void)
987 /* The first element is always "auto". */
988 VEC_safe_push (char_ptr, charsets, xstrdup ("auto"));
989 find_charset_names ();
991 if (VEC_length (char_ptr, charsets) > 1)
992 charset_enum = (const char **) VEC_address (char_ptr, charsets);
994 charset_enum = default_charset_names;
997 #ifdef HAVE_LANGINFO_CODESET
998 /* The result of nl_langinfo may be overwritten later. This may
999 leak a little memory, if the user later changes the host charset,
1000 but that doesn't matter much. */
1001 auto_host_charset_name = xstrdup (nl_langinfo (CODESET));
1002 /* Solaris will return `646' here -- but the Solaris iconv then
1003 does not accept this. Darwin (and maybe FreeBSD) may return "" here,
1004 which GNU libiconv doesn't like (infinite loop). */
1005 if (!strcmp (auto_host_charset_name, "646") || !*auto_host_charset_name)
1006 auto_host_charset_name = "ASCII";
1007 auto_target_charset_name = auto_host_charset_name;
1008 #elif defined (USE_WIN32API)
1010 static char w32_host_default_charset[16]; /* "CP" + x<=5 digits + paranoia. */
1012 snprintf (w32_host_default_charset, sizeof w32_host_default_charset,
1014 auto_host_charset_name = w32_host_default_charset;
1015 auto_target_charset_name = auto_host_charset_name;
1020 add_setshow_enum_cmd ("charset", class_support,
1021 charset_enum, &host_charset_name, _("\
1022 Set the host and target character sets."), _("\
1023 Show the host and target character sets."), _("\
1024 The `host character set' is the one used by the system GDB is running on.\n\
1025 The `target character set' is the one used by the program being debugged.\n\
1026 You may only use supersets of ASCII for your host character set; GDB does\n\
1027 not support any others.\n\
1028 To see a list of the character sets GDB supports, type `set charset <TAB>'."),
1029 /* Note that the sfunc below needs to set
1030 target_charset_name, because the 'set
1031 charset' command sets two variables. */
1034 &setlist, &showlist);
1036 add_setshow_enum_cmd ("host-charset", class_support,
1037 charset_enum, &host_charset_name, _("\
1038 Set the host character set."), _("\
1039 Show the host character set."), _("\
1040 The `host character set' is the one used by the system GDB is running on.\n\
1041 You may only use supersets of ASCII for your host character set; GDB does\n\
1042 not support any others.\n\
1043 To see a list of the character sets GDB supports, type `set host-charset <TAB>'."),
1044 set_host_charset_sfunc,
1045 show_host_charset_name,
1046 &setlist, &showlist);
1048 add_setshow_enum_cmd ("target-charset", class_support,
1049 charset_enum, &target_charset_name, _("\
1050 Set the target character set."), _("\
1051 Show the target character set."), _("\
1052 The `target character set' is the one used by the program being debugged.\n\
1053 GDB translates characters and strings between the host and target\n\
1054 character sets as needed.\n\
1055 To see a list of the character sets GDB supports, type `set target-charset'<TAB>"),
1056 set_target_charset_sfunc,
1057 show_target_charset_name,
1058 &setlist, &showlist);
1060 add_setshow_enum_cmd ("target-wide-charset", class_support,
1061 charset_enum, &target_wide_charset_name,
1063 Set the target wide character set."), _("\
1064 Show the target wide character set."), _("\
1065 The `target wide character set' is the one used by the program being debugged.\n\
1066 In particular it is the encoding used by `wchar_t'.\n\
1067 GDB translates characters and strings between the host and target\n\
1068 character sets as needed.\n\
1069 To see a list of the character sets GDB supports, type\n\
1070 `set target-wide-charset'<TAB>"),
1071 set_target_wide_charset_sfunc,
1072 show_target_wide_charset_name,
1073 &setlist, &showlist);