1 /* Demangler for GNU C++ - main program
2 Copyright 1989, 1991, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002 Free Software Foundation, Inc.
8 This file is part of GCC.
10 GCC is free software; you can redistribute it and/or modify it under
11 the terms of the GNU General Public License as published by the Free
12 Software Foundation; either version 2, or (at your option) any later
15 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
16 WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
20 You should have received a copy of the GNU General Public License
21 along with GCC; see the file COPYING. If not, write to the Free
22 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
28 #include "libiberty.h"
31 #include "safe-ctype.h"
33 static int flags = DMGL_PARAMS | DMGL_ANSI | DMGL_VERBOSE;
35 static void demangle_it PARAMS ((char *));
36 static void usage PARAMS ((FILE *, int)) ATTRIBUTE_NORETURN;
37 static void print_demangler_list PARAMS ((FILE *));
40 demangle_it (mangled_name)
45 /* For command line args, also try to demangle type encodings. */
46 result = cplus_demangle (mangled_name, flags | DMGL_TYPES);
49 printf ("%s\n", mangled_name);
53 printf ("%s\n", result);
59 print_demangler_list (stream)
62 const struct demangler_engine *demangler;
64 fprintf (stream, "{%s", libiberty_demanglers->demangling_style_name);
66 for (demangler = libiberty_demanglers + 1;
67 demangler->demangling_style != unknown_demangling;
69 fprintf (stream, ",%s", demangler->demangling_style_name);
71 fprintf (stream, "}");
75 usage (stream, status)
80 Usage: %s [-_] [-n] [--strip-underscores] [--no-strip-underscores] \n",
85 print_demangler_list (stream);
86 fprintf (stream, "]\n");
90 print_demangler_list (stream);
91 fprintf (stream, "]\n");
94 [--help] [--version] [arg...]\n");
98 #define MBUF_SIZE 32767
99 char mbuffer[MBUF_SIZE];
101 int strip_underscore = 0;
103 static const struct option long_options[] = {
104 {"strip-underscores", no_argument, 0, '_'},
105 {"format", required_argument, 0, 's'},
106 {"help", no_argument, 0, 'h'},
107 {"no-strip-underscores", no_argument, 0, 'n'},
108 {"version", no_argument, 0, 'v'},
109 {0, no_argument, 0, 0}
113 standard_symbol_characters PARAMS ((void));
116 hp_symbol_characters PARAMS ((void));
118 /* Return the string of non-alnum characters that may occur
119 as a valid symbol component, in the standard assembler symbol
123 standard_symbol_characters ()
129 /* Return the string of non-alnum characters that may occur
130 as a valid symbol name component in an HP object file.
132 Note that, since HP's compiler generates object code straight from
133 C++ source, without going through an assembler, its mangled
134 identifiers can use all sorts of characters that no assembler would
135 tolerate, so the alphabet this function creates is a little odd.
136 Here are some sample mangled identifiers offered by HP:
138 typeid*__XT24AddressIndExpClassMember_
139 [Vftptr]key:__dt__32OrdinaryCompareIndExpClassMemberFv
140 __ct__Q2_9Elf64_Dyn18{unnamed.union.#1}Fv
142 This still seems really weird to me, since nowhere else in this
143 file is there anything to recognize curly brackets, parens, etc.
145 this is right, but I still strongly suspect that there's a
146 misunderstanding here.
148 If we decide it's better for c++filt to use HP's assembler syntax
149 to scrape identifiers out of its input, here's the definition of
150 the symbol name syntax from the HP assembler manual:
152 Symbols are composed of uppercase and lowercase letters, decimal
153 digits, dollar symbol, period (.), ampersand (&), pound sign(#) and
154 underscore (_). A symbol can begin with a letter, digit underscore or
155 dollar sign. If a symbol begins with a digit, it must contain a
160 hp_symbol_characters ()
162 return "_$.<>#,*&[]:(){}";
165 extern int main PARAMS ((int, char **));
174 const char *valid_symbols;
175 enum demangling_styles style = auto_demangling;
177 program_name = argv[0];
178 xmalloc_set_program_name (program_name);
180 strip_underscore = TARGET_PREPENDS_UNDERSCORE;
182 while ((c = getopt_long (argc, argv, "_ns:", long_options, (int *) 0)) != EOF)
192 strip_underscore = 0;
195 print_version ("c++filt");
198 strip_underscore = 1;
202 style = cplus_demangle_name_to_style (optarg);
203 if (style == unknown_demangling)
205 fprintf (stderr, "%s: unknown demangling style `%s'\n",
206 program_name, optarg);
210 cplus_demangle_set_style (style);
218 for ( ; optind < argc; optind++)
220 demangle_it (argv[optind]);
225 switch (current_demangling_style)
228 case lucid_demangling:
230 case java_demangling:
232 case gnat_demangling:
233 case gnu_v3_demangling:
234 case auto_demangling:
235 valid_symbols = standard_symbol_characters ();
238 valid_symbols = hp_symbol_characters ();
241 /* Folks should explicitly indicate the appropriate alphabet for
242 each demangling. Providing a default would allow the
243 question to go unconsidered. */
244 fatal ("Internal error: no symbol alphabet for current style");
251 /* Try to read a label. */
252 while (c != EOF && (ISALNUM (c) || strchr (valid_symbols, c)))
254 if (i >= MBUF_SIZE-1)
264 if (mbuffer[0] == '.' || mbuffer[0] == '$')
266 if (strip_underscore && mbuffer[skip_first] == '_')
272 flags |= (int) style;
273 result = cplus_demangle (mbuffer + skip_first, flags);
276 if (mbuffer[0] == '.')
278 fputs (result, stdout);
282 fputs (mbuffer, stdout);