| /* Demangler for GNU C++ - main program |
| Copyright (C) 1989-2024 Free Software Foundation, Inc. |
| Written by James Clark (jjc@jclark.uucp) |
| Rewritten by Fred Fish (fnf@cygnus.com) for ARM and Lucid demangling |
| Modified by Satish Pai (pai@apollo.hp.com) for HP demangling |
| |
| This file is part of GNU Binutils. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or (at |
| your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING. If not, write to the Free |
| Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
| 02110-1301, USA. */ |
| |
| #include "sysdep.h" |
| #include "bfd.h" |
| #include "libiberty.h" |
| #include "demangle.h" |
| #include "getopt.h" |
| #include "safe-ctype.h" |
| #include "bucomm.h" |
| |
| static int flags = DMGL_PARAMS | DMGL_ANSI | DMGL_VERBOSE; |
| static int strip_underscore = TARGET_PREPENDS_UNDERSCORE; |
| |
| static const struct option long_options[] = |
| { |
| {"strip-underscore", no_argument, NULL, '_'}, |
| {"format", required_argument, NULL, 's'}, |
| {"help", no_argument, NULL, 'h'}, |
| {"no-params", no_argument, NULL, 'p'}, |
| {"no-strip-underscores", no_argument, NULL, 'n'}, |
| {"no-verbose", no_argument, NULL, 'i'}, |
| {"types", no_argument, NULL, 't'}, |
| {"version", no_argument, NULL, 'v'}, |
| {"recurse-limit", no_argument, NULL, 'R'}, |
| {"recursion-limit", no_argument, NULL, 'R'}, |
| {"no-recurse-limit", no_argument, NULL, 'r'}, |
| {"no-recursion-limit", no_argument, NULL, 'r'}, |
| {NULL, no_argument, NULL, 0} |
| }; |
| |
| static void |
| demangle_it (char *mangled_name) |
| { |
| char *result; |
| unsigned int skip_first = 0; |
| |
| /* _ and $ are sometimes found at the start of function names |
| in assembler sources in order to distinguish them from other |
| names (eg register names). So skip them here. */ |
| if (mangled_name[0] == '.' || mangled_name[0] == '$') |
| ++skip_first; |
| if (strip_underscore && mangled_name[skip_first] == '_') |
| ++skip_first; |
| |
| result = cplus_demangle (mangled_name + skip_first, flags); |
| |
| if (result == NULL) |
| printf ("%s", mangled_name); |
| else |
| { |
| if (mangled_name[0] == '.') |
| putchar ('.'); |
| printf ("%s", result); |
| free (result); |
| } |
| } |
| |
| static void |
| print_demangler_list (FILE *stream) |
| { |
| const struct demangler_engine *demangler; |
| |
| fprintf (stream, "{%s", libiberty_demanglers->demangling_style_name); |
| |
| for (demangler = libiberty_demanglers + 1; |
| demangler->demangling_style != unknown_demangling; |
| ++demangler) |
| fprintf (stream, ",%s", demangler->demangling_style_name); |
| |
| fprintf (stream, "}"); |
| } |
| |
| ATTRIBUTE_NORETURN static void |
| usage (FILE *stream, int status) |
| { |
| fprintf (stream, "\ |
| Usage: %s [options] [mangled names]\n", program_name); |
| fprintf (stream, "\ |
| Options are:\n\ |
| [-_|--strip-underscore] Ignore first leading underscore%s\n", |
| TARGET_PREPENDS_UNDERSCORE ? " (default)" : ""); |
| fprintf (stream, "\ |
| [-n|--no-strip-underscore] Do not ignore a leading underscore%s\n", |
| TARGET_PREPENDS_UNDERSCORE ? "" : " (default)"); |
| fprintf (stream, "\ |
| [-p|--no-params] Do not display function arguments\n\ |
| [-i|--no-verbose] Do not show implementation details (if any)\n\ |
| [-R|--recurse-limit] Enable a limit on recursion whilst demangling. [Default]\n\ |
| ]-r|--no-recurse-limit] Disable a limit on recursion whilst demangling\n\ |
| [-t|--types] Also attempt to demangle type encodings\n\ |
| [-s|--format "); |
| print_demangler_list (stream); |
| fprintf (stream, "]\n"); |
| |
| fprintf (stream, "\ |
| [@<file>] Read extra options from <file>\n\ |
| [-h|--help] Display this information\n\ |
| [-v|--version] Show the version information\n\ |
| Demangled names are displayed to stdout.\n\ |
| If a name cannot be demangled it is just echoed to stdout.\n\ |
| If no names are provided on the command line, stdin is read.\n"); |
| if (REPORT_BUGS_TO[0] && status == 0) |
| fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO); |
| exit (status); |
| } |
| |
| /* Return the string of non-alnum characters that may occur |
| as a valid symbol component, in the standard assembler symbol |
| syntax. */ |
| |
| static const char * |
| standard_symbol_characters (void) |
| { |
| return "_$."; |
| } |
| |
| extern int main (int, char **); |
| |
| int |
| main (int argc, char **argv) |
| { |
| int c; |
| const char *valid_symbols; |
| enum demangling_styles style = auto_demangling; |
| |
| program_name = argv[0]; |
| xmalloc_set_program_name (program_name); |
| bfd_set_error_program_name (program_name); |
| |
| expandargv (&argc, &argv); |
| |
| while ((c = getopt_long (argc, argv, "_hinprRs:tv", long_options, (int *) 0)) != EOF) |
| { |
| switch (c) |
| { |
| case '?': |
| usage (stderr, 1); |
| break; |
| case 'h': |
| usage (stdout, 0); |
| case 'n': |
| strip_underscore = 0; |
| break; |
| case 'p': |
| flags &= ~ DMGL_PARAMS; |
| break; |
| case 'r': |
| flags |= DMGL_NO_RECURSE_LIMIT; |
| break; |
| case 'R': |
| flags &= ~ DMGL_NO_RECURSE_LIMIT; |
| break; |
| case 't': |
| flags |= DMGL_TYPES; |
| break; |
| case 'i': |
| flags &= ~ DMGL_VERBOSE; |
| break; |
| case 'v': |
| print_version ("c++filt"); |
| return 0; |
| case '_': |
| strip_underscore = 1; |
| break; |
| case 's': |
| style = cplus_demangle_name_to_style (optarg); |
| if (style == unknown_demangling) |
| { |
| fprintf (stderr, "%s: unknown demangling style `%s'\n", |
| program_name, optarg); |
| return 1; |
| } |
| cplus_demangle_set_style (style); |
| break; |
| } |
| } |
| |
| if (optind < argc) |
| { |
| for ( ; optind < argc; optind++) |
| { |
| demangle_it (argv[optind]); |
| putchar ('\n'); |
| } |
| |
| return 0; |
| } |
| |
| switch (current_demangling_style) |
| { |
| case auto_demangling: |
| case gnu_v3_demangling: |
| case java_demangling: |
| case gnat_demangling: |
| case dlang_demangling: |
| case rust_demangling: |
| valid_symbols = standard_symbol_characters (); |
| break; |
| default: |
| /* Folks should explicitly indicate the appropriate alphabet for |
| each demangling. Providing a default would allow the |
| question to go unconsidered. */ |
| fatal ("Internal error: no symbol alphabet for current style"); |
| } |
| |
| for (;;) |
| { |
| static char mbuffer[32767]; |
| unsigned i = 0; |
| |
| c = getchar (); |
| /* Try to read a mangled name. */ |
| while (c != EOF && (ISALNUM (c) || strchr (valid_symbols, c))) |
| { |
| if (i >= sizeof (mbuffer) - 1) |
| break; |
| mbuffer[i++] = c; |
| c = getchar (); |
| } |
| |
| if (i > 0) |
| { |
| mbuffer[i] = 0; |
| demangle_it (mbuffer); |
| } |
| |
| if (c == EOF) |
| break; |
| |
| /* Echo the whitespace characters so that the output looks |
| like the input, only with the mangled names demangled. */ |
| putchar (c); |
| if (c == '\n') |
| fflush (stdout); |
| } |
| |
| fflush (stdout); |
| return 0; |
| } |