/* Demangler for GNU C++ - main program
- Copyright 1989, 1991, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+ Copyright (C) 1989-2019 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.
+ This file is part of GNU Binutils.
-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.
+ 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.
-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.
+ 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. */
+ 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 "config.h"
+#include "sysdep.h"
#include "bfd.h"
-#include "bucomm.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 void demangle_it (char *);
-static void usage (FILE *, int) ATTRIBUTE_NORETURN;
-static void print_demangler_list (FILE *);
+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);
- /* 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);
- }
+ printf ("%s", mangled_name);
else
{
- printf ("%s\n", result);
+ if (mangled_name[0] == '.')
+ putchar ('.');
+ printf ("%s", result);
free (result);
}
}
fprintf (stream, "}");
}
-static void
+ATTRIBUTE_NORETURN static void
usage (FILE *stream, int status)
{
fprintf (stream, "\
-Usage: %s [-_] [-n] [--strip-underscores] [--no-strip-underscores]\n\
- [-p] [--no-params]\n",
- program_name);
-
+Usage: %s [options] [mangled names]\n", program_name);
fprintf (stream, "\
- [-s ");
- print_demangler_list (stream);
- fprintf (stream, "]\n");
-
+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, "\
- [--format ");
+ [-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, "\
- [--help] [--version] [arg...]\n");
+ [@<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);
}
-static char mbuffer[32767];
-
-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. */
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 <srikanth@cup.hp.com>, 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);
+ bfd_set_error_program_name (program_name);
expandargv (&argc, &argv);
- strip_underscore = TARGET_PREPENDS_UNDERSCORE;
-
- while ((c = getopt_long (argc, argv, "_nps:", long_options, (int *) 0)) != EOF)
+ while ((c = getopt_long (argc, argv, "_hinprRs:tv", long_options, (int *) 0)) != EOF)
{
switch (c)
{
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);
+ 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);
- }
+ 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;
}
}
for ( ; optind < argc; optind++)
{
demangle_it (argv[optind]);
+ putchar ('\n');
}
+
+ return 0;
}
- else
+
+ 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 (;;)
{
- switch (current_demangling_style)
+ static char mbuffer[32767];
+ unsigned i = 0;
+
+ c = getchar ();
+ /* Try to read a mangled name. */
+ while (c != EOF && (ISALNUM (c) || strchr (valid_symbols, c)))
{
- 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");
+ if (i >= sizeof (mbuffer) - 1)
+ break;
+ mbuffer[i++] = c;
+ c = getchar ();
}
- for (;;)
+ if (i > 0)
{
- unsigned i = 0;
- c = getchar ();
- /* Try to read a label. */
- while (c != EOF && (ISALNUM (c) || strchr (valid_symbols, c)))
- {
- if (i >= sizeof (mbuffer) - 1)
- break;
- mbuffer[i++] = c;
- c = getchar ();
- }
- if (i > 0)
- {
- unsigned 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);
+ 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);
}
- return (0);
+ fflush (stdout);
+ return 0;
}
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