summaryrefslogtreecommitdiff
path: root/binutils/cxxfilt.c
diff options
context:
space:
mode:
Diffstat (limited to 'binutils/cxxfilt.c')
-rw-r--r--binutils/cxxfilt.c288
1 files changed, 288 insertions, 0 deletions
diff --git a/binutils/cxxfilt.c b/binutils/cxxfilt.c
new file mode 100644
index 0000000..157ebe0
--- /dev/null
+++ b/binutils/cxxfilt.c
@@ -0,0 +1,288 @@
+/* Demangler for GNU C++ - main program
+ Copyright (C) 1989-2014 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'},
+ {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, "}");
+}
+
+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\
+ [-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 "_$.";
+}
+
+/* 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)
+{
+ int c;
+ const char *valid_symbols;
+ enum demangling_styles style = auto_demangling;
+
+ program_name = argv[0];
+ xmalloc_set_program_name (program_name);
+
+ expandargv (&argc, &argv);
+
+ while ((c = getopt_long (argc, argv, "_hinps: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 '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 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 (;;)
+ {
+ 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;
+}
View Lorry Controller Status