2 * Copyright (c) 2009 Kai Wang
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include <sys/param.h>
29 #include <capsicum_helpers.h>
40 ELFTC_VCSID("$Id: cxxfilt.c 3499 2016-11-25 16:06:29Z emaste $");
44 static int stripus = 0;
45 static int noparam = 0;
46 static int format = 0;
54 static struct option longopts[] =
56 {"format", required_argument, NULL, 's'},
57 {"help", no_argument, NULL, OPTION_HELP},
58 {"no-params", no_argument, NULL, 'p'},
59 {"no-strip-underscores", no_argument, NULL, 'n'},
60 {"strip-underscores", no_argument, NULL, '_'},
61 {"version", no_argument, NULL, 'V'},
70 {"arm", ELFTC_DEM_ARM},
71 {"gnu", ELFTC_DEM_GNU2},
72 {"gnu-v3", ELFTC_DEM_GNU3}
75 #define USAGE_MESSAGE "\
76 Usage: %s [options] [encoded-names...]\n\
77 Translate C++ symbol names to human-readable form.\n\n\
79 -_ | --strip-underscores Remove leading underscores prior to decoding.\n\
80 -n | --no-strip-underscores Do not remove leading underscores.\n\
81 -p | --no-params (Accepted but ignored).\n\
82 -s SCHEME | --format=SCHEME Select the encoding scheme to use.\n\
83 Valid schemes are: 'arm', 'auto', 'gnu' and\n\
85 --help Print a help message.\n\
86 --version Print a version identifier and exit.\n"
92 (void) fprintf(stderr, USAGE_MESSAGE, ELFTC_GETPROGNAME());
99 fprintf(stderr, "%s (%s)\n", ELFTC_GETPROGNAME(), elftc_version());
104 find_format(const char *fstr)
108 for (i = 0; (size_t) i < sizeof(flist) / sizeof(flist[0]); i++) {
109 if (!strcmp(fstr, flist[i].fname))
110 return (flist[i].fvalue);
119 static char dem[STRBUFSZ];
121 if (stripus && *name == '_')
124 if (strlen(name) == 0)
127 if (elftc_demangle(name, dem, sizeof(dem), (unsigned) format) < 0)
134 main(int argc, char **argv)
136 char *dem, buf[STRBUFSZ];
140 while ((opt = getopt_long(argc, argv, "_nps:V", longopts, NULL)) !=
153 if ((format = find_format(optarg)) < 0)
154 errx(EXIT_FAILURE, "unsupported format: %s",
170 if (caph_limit_stdio() < 0)
171 err(EXIT_FAILURE, "failed to limit stdio rights");
172 if (caph_enter() < 0)
173 err(EXIT_FAILURE, "failed to enter capability mode");
176 for (n = 0; n < argc; n++) {
177 if ((dem = demangle(argv[n])) == NULL)
178 printf("%s\n", argv[n]);
185 setvbuf(stdout, NULL, _IOLBF, 0);
187 if (c == EOF || !(isalnum(c) || strchr(".$_", c))) {
190 if ((dem = demangle(buf)) == NULL)
200 if ((size_t) p >= sizeof(buf) - 1)
201 warnx("buffer overflowed");