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_between_encodings (const char *from
, const char *to
,
462 const gdb_byte
*bytes
, unsigned int num_bytes
,
463 int width
, struct obstack
*output
,
464 enum transliterations translit
)
467 struct cleanup
*cleanups
;
470 unsigned int space_request
;
472 /* Often, the host and target charsets will be the same. */
473 if (!strcmp (from
, to
))
475 obstack_grow (output
, bytes
, num_bytes
);
479 desc
= iconv_open (to
, from
);
480 if (desc
== (iconv_t
) -1)
481 perror_with_name ("Converting character sets");
482 cleanups
= make_cleanup (cleanup_iconv
, &desc
);
485 inp
= (char *) bytes
;
487 space_request
= num_bytes
;
495 old_size
= obstack_object_size (output
);
496 obstack_blank (output
, space_request
);
498 outp
= obstack_base (output
) + old_size
;
499 outleft
= space_request
;
501 r
= iconv (desc
, (ICONV_CONST
char **) &inp
, &inleft
, &outp
, &outleft
);
503 /* Now make sure that the object on the obstack only includes
504 bytes we have converted. */
505 obstack_blank (output
, - (int) outleft
);
507 if (r
== (size_t) -1)
515 /* Invalid input sequence. */
516 if (translit
== translit_none
)
517 error (_("Could not convert character to `%s' character set"),
520 /* We emit escape sequence for the bytes, skip them,
522 for (i
= 0; i
< width
; ++i
)
526 sprintf (octal
, "\\%.3o", *inp
& 0xff);
527 obstack_grow_str (output
, octal
);
536 /* We ran out of space in the output buffer. Make it
537 bigger next time around. */
542 /* Incomplete input sequence. FIXME: ought to report this
543 to the caller somehow. */
548 perror_with_name ("Internal error while converting character sets");
553 do_cleanups (cleanups
);
558 /* An iterator that returns host wchar_t's from a target string. */
559 struct wchar_iterator
561 /* The underlying iconv descriptor. */
564 /* The input string. This is updated as convert characters. */
566 /* The number of bytes remaining in the input. */
569 /* The width of an input character. */
572 /* The output buffer and its size. */
577 /* Create a new iterator. */
578 struct wchar_iterator
*
579 make_wchar_iterator (const gdb_byte
*input
, size_t bytes
, const char *charset
,
582 struct wchar_iterator
*result
;
585 desc
= iconv_open (INTERMEDIATE_ENCODING
, charset
);
586 if (desc
== (iconv_t
) -1)
587 perror_with_name ("Converting character sets");
589 result
= XNEW (struct wchar_iterator
);
591 result
->input
= (char *) input
;
592 result
->bytes
= bytes
;
593 result
->width
= width
;
595 result
->out
= XNEW (gdb_wchar_t
);
596 result
->out_size
= 1;
602 do_cleanup_iterator (void *p
)
604 struct wchar_iterator
*iter
= p
;
606 iconv_close (iter
->desc
);
612 make_cleanup_wchar_iterator (struct wchar_iterator
*iter
)
614 return make_cleanup (do_cleanup_iterator
, iter
);
618 wchar_iterate (struct wchar_iterator
*iter
,
619 enum wchar_iterate_result
*out_result
,
620 gdb_wchar_t
**out_chars
,
621 const gdb_byte
**ptr
,
626 /* Try to convert some characters. At first we try to convert just
627 a single character. The reason for this is that iconv does not
628 necessarily update its outgoing arguments when it encounters an
629 invalid input sequence -- but we want to reliably report this to
630 our caller so it can emit an escape sequence. */
632 while (iter
->bytes
> 0)
634 char *outptr
= (char *) &iter
->out
[0];
635 char *orig_inptr
= iter
->input
;
636 size_t orig_in
= iter
->bytes
;
637 size_t out_avail
= out_request
* sizeof (gdb_wchar_t
);
639 size_t r
= iconv (iter
->desc
,
640 (ICONV_CONST
char **) &iter
->input
, &iter
->bytes
,
641 &outptr
, &out_avail
);
643 if (r
== (size_t) -1)
648 /* Invalid input sequence. Skip it, and let the caller
650 *out_result
= wchar_iterate_invalid
;
653 iter
->input
+= iter
->width
;
654 iter
->bytes
-= iter
->width
;
658 /* We ran out of space. We still might have converted a
659 character; if so, return it. Otherwise, grow the
660 buffer and try again. */
661 if (out_avail
< out_request
* sizeof (gdb_wchar_t
))
665 if (out_request
> iter
->out_size
)
667 iter
->out_size
= out_request
;
668 iter
->out
= xrealloc (iter
->out
,
669 out_request
* sizeof (gdb_wchar_t
));
674 /* Incomplete input sequence. Let the caller know, and
675 arrange for future calls to see EOF. */
676 *out_result
= wchar_iterate_incomplete
;
683 perror_with_name ("Internal error while converting character sets");
687 /* We converted something. */
688 num
= out_request
- out_avail
/ sizeof (gdb_wchar_t
);
689 *out_result
= wchar_iterate_ok
;
690 *out_chars
= iter
->out
;
692 *len
= orig_in
- iter
->bytes
;
697 *out_result
= wchar_iterate_eof
;
702 /* The charset.c module initialization function. */
704 extern initialize_file_ftype _initialize_charset
; /* -Wmissing-prototype */
706 DEF_VEC_P (char_ptr
);
708 static VEC (char_ptr
) *charsets
;
713 find_charset_names (void)
715 VEC_safe_push (char_ptr
, charsets
, GDB_DEFAULT_HOST_CHARSET
);
716 VEC_safe_push (char_ptr
, charsets
, NULL
);
719 #else /* PHONY_ICONV */
721 /* Sometimes, libiconv redefines iconvlist as libiconvlist -- but
722 provides different symbols in the static and dynamic libraries.
723 So, configure may see libiconvlist but not iconvlist. But, calling
724 iconvlist is the right thing to do and will work. Hence we do a
725 check here but unconditionally call iconvlist below. */
726 #if defined (HAVE_ICONVLIST) || defined (HAVE_LIBICONVLIST)
728 /* A helper function that adds some character sets to the vector of
729 all character sets. This is a callback function for iconvlist. */
732 add_one (unsigned int count
, const char *const *names
, void *data
)
736 for (i
= 0; i
< count
; ++i
)
737 VEC_safe_push (char_ptr
, charsets
, xstrdup (names
[i
]));
743 find_charset_names (void)
745 iconvlist (add_one
, NULL
);
746 VEC_safe_push (char_ptr
, charsets
, NULL
);
751 /* Return non-zero if LINE (output from iconv) should be ignored.
752 Older iconv programs (e.g. 2.2.2) include the human readable
753 introduction even when stdout is not a tty. Newer versions omit
754 the intro if stdout is not a tty. */
757 ignore_line_p (const char *line
)
759 /* This table is used to filter the output. If this text appears
760 anywhere in the line, it is ignored (strstr is used). */
761 static const char * const ignore_lines
[] =
766 "listed with several",
771 for (i
= 0; ignore_lines
[i
] != NULL
; ++i
)
773 if (strstr (line
, ignore_lines
[i
]) != NULL
)
781 find_charset_names (void)
783 struct pex_obj
*child
;
787 struct gdb_environ
*iconv_env
;
789 /* Older iconvs, e.g. 2.2.2, don't omit the intro text if stdout is not
790 a tty. We need to recognize it and ignore it. This text is subject
791 to translation, so force LANGUAGE=C. */
792 iconv_env
= make_environ ();
793 init_environ (iconv_env
);
794 set_in_environ (iconv_env
, "LANGUAGE", "C");
795 set_in_environ (iconv_env
, "LC_ALL", "C");
797 child
= pex_init (PEX_USE_PIPES
, "iconv", NULL
);
802 /* Note that we simply ignore errors here. */
803 if (!pex_run_in_environment (child
, PEX_SEARCH
| PEX_STDERR_TO_STDOUT
,
804 "iconv", args
, environ_vector (iconv_env
),
807 FILE *in
= pex_read_output (child
, 0);
809 /* POSIX says that iconv -l uses an unspecified format. We
810 parse the glibc and libiconv formats; feel free to add others
815 /* The size of buf is chosen arbitrarily. */
820 r
= fgets (buf
, sizeof (buf
), in
);
826 if (ignore_line_p (r
))
829 /* Strip off the newline. */
831 /* Strip off one or two '/'s. glibc will print lines like
832 "8859_7//", but also "10646-1:1993/UCS4/". */
833 if (buf
[len
- 1] == '/')
835 if (buf
[len
- 1] == '/')
839 /* libiconv will print multiple entries per line, separated
840 by spaces. Older iconvs will print multiple entries per line,
841 indented by two spaces, and separated by ", "
842 (i.e. the human readable form). */
849 /* Skip leading blanks. */
850 for (p
= start
; *p
&& *p
== ' '; ++p
)
853 /* Find the next space, comma, or end-of-line. */
854 for ( ; *p
&& *p
!= ' ' && *p
!= ','; ++p
)
856 /* Ignore an empty result. */
861 VEC_safe_push (char_ptr
, charsets
, xstrdup (start
));
864 /* Skip any extra spaces. */
865 for (start
= p
+ 1; *start
&& *start
== ' '; ++start
)
870 if (pex_get_status (child
, 1, &status
)
871 && WIFEXITED (status
) && !WEXITSTATUS (status
))
877 free_environ (iconv_env
);
881 /* Some error occurred, so drop the vector. */
884 for (ix
= 0; VEC_iterate (char_ptr
, charsets
, ix
, elt
); ++ix
)
886 VEC_truncate (char_ptr
, charsets
, 0);
889 VEC_safe_push (char_ptr
, charsets
, NULL
);
892 #endif /* HAVE_ICONVLIST || HAVE_LIBICONVLIST */
893 #endif /* PHONY_ICONV */
895 /* The "auto" target charset used by default_auto_charset. */
896 static const char *auto_target_charset_name
= GDB_DEFAULT_TARGET_CHARSET
;
899 default_auto_charset (void)
901 return auto_target_charset_name
;
905 default_auto_wide_charset (void)
907 return GDB_DEFAULT_TARGET_WIDE_CHARSET
;
911 _initialize_charset (void)
913 /* The first element is always "auto". */
914 VEC_safe_push (char_ptr
, charsets
, xstrdup ("auto"));
915 find_charset_names ();
917 if (VEC_length (char_ptr
, charsets
) > 1)
918 charset_enum
= (const char **) VEC_address (char_ptr
, charsets
);
920 charset_enum
= default_charset_names
;
923 #ifdef HAVE_LANGINFO_CODESET
924 /* The result of nl_langinfo may be overwritten later. This may
925 leak a little memory, if the user later changes the host charset,
926 but that doesn't matter much. */
927 auto_host_charset_name
= xstrdup (nl_langinfo (CODESET
));
928 /* Solaris will return `646' here -- but the Solaris iconv then
929 does not accept this. Darwin (and maybe FreeBSD) may return "" here,
930 which GNU libiconv doesn't like (infinite loop). */
931 if (!strcmp (auto_host_charset_name
, "646") || !*auto_host_charset_name
)
932 auto_host_charset_name
= "ASCII";
933 auto_target_charset_name
= auto_host_charset_name
;
934 #elif defined (USE_WIN32API)
936 static char w32_host_default_charset
[16]; /* "CP" + x<=5 digits + paranoia. */
938 snprintf (w32_host_default_charset
, sizeof w32_host_default_charset
,
940 auto_host_charset_name
= w32_host_default_charset
;
941 auto_target_charset_name
= auto_host_charset_name
;
946 add_setshow_enum_cmd ("charset", class_support
,
947 charset_enum
, &host_charset_name
, _("\
948 Set the host and target character sets."), _("\
949 Show the host and target character sets."), _("\
950 The `host character set' is the one used by the system GDB is running on.\n\
951 The `target character set' is the one used by the program being debugged.\n\
952 You may only use supersets of ASCII for your host character set; GDB does\n\
953 not support any others.\n\
954 To see a list of the character sets GDB supports, type `set charset <TAB>'."),
955 /* Note that the sfunc below needs to set
956 target_charset_name, because the 'set
957 charset' command sets two variables. */
960 &setlist
, &showlist
);
962 add_setshow_enum_cmd ("host-charset", class_support
,
963 charset_enum
, &host_charset_name
, _("\
964 Set the host character set."), _("\
965 Show the host character set."), _("\
966 The `host character set' is the one used by the system GDB is running on.\n\
967 You may only use supersets of ASCII for your host character set; GDB does\n\
968 not support any others.\n\
969 To see a list of the character sets GDB supports, type `set host-charset <TAB>'."),
970 set_host_charset_sfunc
,
971 show_host_charset_name
,
972 &setlist
, &showlist
);
974 add_setshow_enum_cmd ("target-charset", class_support
,
975 charset_enum
, &target_charset_name
, _("\
976 Set the target character set."), _("\
977 Show the target character set."), _("\
978 The `target character set' is the one used by the program being debugged.\n\
979 GDB translates characters and strings between the host and target\n\
980 character sets as needed.\n\
981 To see a list of the character sets GDB supports, type `set target-charset'<TAB>"),
982 set_target_charset_sfunc
,
983 show_target_charset_name
,
984 &setlist
, &showlist
);
986 add_setshow_enum_cmd ("target-wide-charset", class_support
,
987 charset_enum
, &target_wide_charset_name
,
989 Set the target wide character set."), _("\
990 Show the target wide character set."), _("\
991 The `target wide character set' is the one used by the program being debugged.\n\
992 In particular it is the encoding used by `wchar_t'.\n\
993 GDB translates characters and strings between the host and target\n\
994 character sets as needed.\n\
995 To see a list of the character sets GDB supports, type\n\
996 `set target-wide-charset'<TAB>"),
997 set_target_wide_charset_sfunc
,
998 show_target_wide_charset_name
,
999 &setlist
, &showlist
);