/* Demangler for GNU C++ - main program Copyright 1989, 1991, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 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 GCC. GCC 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 2, or (at your option) any later version. GCC 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "config.h" #include "bfd.h" #include "bucomm.h" #include "libiberty.h" #include "demangle.h" #include "getopt.h" #include "safe-ctype.h" static int flags = DMGL_PARAMS | DMGL_ANSI | DMGL_VERBOSE; static void demangle_it (char *); static void usage (FILE *, int) ATTRIBUTE_NORETURN; static void print_demangler_list (FILE *); static void demangle_it (char *mangled_name) { char *result; /* For command line args, also try to demangle type encodings. */ result = cplus_demangle (mangled_name, flags | DMGL_TYPES); if (result == NULL) { printf ("%s\n", mangled_name); } else { printf ("%s\n", 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, "}"); } static void usage (FILE *stream, int status) { fprintf (stream, "\ Usage: %s [-_] [-n] [--strip-underscores] [--no-strip-underscores]\n\ [-p] [--no-params]\n", program_name); fprintf (stream, "\ [-s "); print_demangler_list (stream); fprintf (stream, "]\n"); fprintf (stream, "\ [--format "); print_demangler_list (stream); fprintf (stream, "]\n"); fprintf (stream, "\ [--help] [--version] [arg...]\n"); exit (status); } #define MBUF_SIZE 32767 char mbuffer[MBUF_SIZE]; int strip_underscore = 0; static const struct option long_options[] = { {"strip-underscores", no_argument, 0, '_'}, {"format", required_argument, 0, 's'}, {"help", no_argument, 0, 'h'}, {"no-params", no_argument, 0, 'p'}, {"no-strip-underscores", no_argument, 0, 'n'}, {"version", no_argument, 0, 'v'}, {0, no_argument, 0, 0} }; static const char *standard_symbol_characters (void); static const char *hp_symbol_characters (void); /* 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 "_$."; } /* Return the string of non-alnum characters that may occur as a valid symbol name component in an HP object file. Note that, since HP's compiler generates object code straight from C++ source, without going through an assembler, its mangled identifiers can use all sorts of characters that no assembler would tolerate, so the alphabet this function creates is a little odd. Here are some sample mangled identifiers offered by HP: typeid*__XT24AddressIndExpClassMember_ [Vftptr]key:__dt__32OrdinaryCompareIndExpClassMemberFv __ct__Q2_9Elf64_Dyn18{unnamed.union.#1}Fv This still seems really weird to me, since nowhere else in this file is there anything to recognize curly brackets, parens, etc. I've talked with Srikanth , and he assures me this is right, but I still strongly suspect that there's a misunderstanding here. If we decide it's better for c++filt to use HP's assembler syntax to scrape identifiers out of its input, here's the definition of the symbol name syntax from the HP assembler manual: Symbols are composed of uppercase and lowercase letters, decimal digits, dollar symbol, period (.), ampersand (&), pound sign(#) and underscore (_). A symbol can begin with a letter, digit underscore or dollar sign. If a symbol begins with a digit, it must contain a non-digit character. So have fun. */ static const char * hp_symbol_characters (void) { return "_$.<>#,*&[]:(){}"; } extern int main (int, char **); int main (int argc, char **argv) { char *result; int c; const char *valid_symbols; enum demangling_styles style = auto_demangling; program_name = argv[0]; xmalloc_set_program_name (program_name); strip_underscore = TARGET_PREPENDS_UNDERSCORE; while ((c = getopt_long (argc, argv, "_nps:", 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 '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); } else cplus_demangle_set_style (style); } break; } } if (optind < argc) { for ( ; optind < argc; optind++) { demangle_it (argv[optind]); } } else { switch (current_demangling_style) { case gnu_demangling: case lucid_demangling: case arm_demangling: case java_demangling: case edg_demangling: case gnat_demangling: case gnu_v3_demangling: case auto_demangling: valid_symbols = standard_symbol_characters (); break; case hp_demangling: valid_symbols = hp_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 (;;) { int i = 0; c = getchar (); /* Try to read a label. */ while (c != EOF && (ISALNUM (c) || strchr (valid_symbols, c))) { if (i >= MBUF_SIZE-1) break; mbuffer[i++] = c; c = getchar (); } if (i > 0) { int skip_first = 0; mbuffer[i] = 0; if (mbuffer[0] == '.' || mbuffer[0] == '$') ++skip_first; if (strip_underscore && mbuffer[skip_first] == '_') ++skip_first; if (skip_first > i) skip_first = i; flags |= (int) style; result = cplus_demangle (mbuffer + skip_first, flags); if (result) { if (mbuffer[0] == '.') putc ('.', stdout); fputs (result, stdout); free (result); } else fputs (mbuffer, stdout); fflush (stdout); } if (c == EOF) break; putchar (c); fflush (stdout); } } return (0); }