/* Basic C++ demangling support for GDB.
- Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001
- Free Software Foundation, Inc.
+
+ Copyright (C) 1991-2019 Free Software Foundation, Inc.
+
Written by Fred Fish at Cygnus Support.
This file is part of GDB.
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 2 of the License, or
+ 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,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* This file contains support code for C++ demangling that is common
- to a styles of demangling, and GDB specific. */
+ to a styles of demangling, and GDB specific. */
#include "defs.h"
+#include "cli/cli-utils.h" /* for skip_to_space */
#include "command.h"
#include "gdbcmd.h"
#include "demangle.h"
-#include "gdb_string.h"
+#include "gdb-demangle.h"
+#include "language.h"
/* Select the default C++ demangling style to use. The default is "auto",
which allows gdb to attempt to pick an appropriate demangling style for
"lucid", "arm", "hp", etc.) in which case gdb will never attempt to do auto
selection of the style unless you do an explicit "set demangle auto".
To select one of these as the default, set DEFAULT_DEMANGLING_STYLE in
- the appropriate target configuration file. */
+ the appropriate target configuration file. */
#ifndef DEFAULT_DEMANGLING_STYLE
#define DEFAULT_DEMANGLING_STYLE AUTO_DEMANGLING_STYLE_STRING
#endif
-extern void _initialize_demangler (void);
+/* See documentation in gdb-demangle.h. */
+bool demangle = true;
+
+static void
+show_demangle (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file,
+ _("Demangling of encoded C++/ObjC names "
+ "when displaying symbols is %s.\n"),
+ value);
+}
+
+/* See documentation in gdb-demangle.h. */
+bool asm_demangle = false;
+
+static void
+show_asm_demangle (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file,
+ _("Demangling of C++/ObjC names in "
+ "disassembly listings is %s.\n"),
+ value);
+}
/* String name for the current demangling style. Set by the
"set demangle-style" command, printed as part of the output by the
- "show demangle-style" command. */
+ "show demangle-style" command. */
-static char *current_demangling_style_string;
+static const char *current_demangling_style_string;
/* The array of names of the known demanglyng styles. Generated by
_initialize_demangler from libiberty_demanglers[] array. */
static const char **demangling_style_names;
-
-static void set_demangling_command (char *, int, struct cmd_list_element *);
+static void
+show_demangling_style_names(struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("The current C++ demangling style is \"%s\".\n"),
+ value);
+}
/* Set current demangling style. Called by the "set demangle-style"
command after it has updated the current_demangling_style_string to
enum value.
Note: Assumes that current_demangling_style_string always points to
- a malloc'd string, even if it is a null-string. */
+ a malloc'd string, even if it is a null-string. */
static void
-set_demangling_command (char *ignore, int from_tty, struct cmd_list_element *c)
+set_demangling_command (const char *ignore,
+ int from_tty, struct cmd_list_element *c)
{
const struct demangler_engine *dem;
+ int i;
/* First just try to match whatever style name the user supplied with
one of the known ones. Don't bother special casing for an empty
name, we just treat it as any other style name that doesn't match.
- If we match, update the current demangling style enum. */
+ If we match, update the current demangling style enum. */
- for (dem = libiberty_demanglers;
+ for (dem = libiberty_demanglers, i = 0;
dem->demangling_style != unknown_demangling;
dem++)
{
- if (STREQ (current_demangling_style_string,
- dem->demangling_style_name))
+ if (strcmp (current_demangling_style_string,
+ dem->demangling_style_name) == 0)
{
current_demangling_style = dem->demangling_style;
+ current_demangling_style_string = demangling_style_names[i];
break;
}
+ i++;
}
- /* Check to see if we found a match. If not, gripe about any non-empty
- style name and supply a list of valid ones. FIXME: This should
- probably be done with some sort of completion and with help. */
-
- if (dem->demangling_style == unknown_demangling)
- {
- if (*current_demangling_style_string != '\0')
- {
- printf_unfiltered ("Unknown demangling style `%s'.\n",
- current_demangling_style_string);
- }
- printf_unfiltered ("The currently understood settings are:\n\n");
- for (dem = libiberty_demanglers;
- dem->demangling_style != unknown_demangling;
- dem++)
- {
- printf_unfiltered ("%-10s %s\n", dem->demangling_style_name,
- dem->demangling_style_doc);
- if (dem->demangling_style == current_demangling_style)
- {
- xfree (current_demangling_style_string);
- current_demangling_style_string =
- savestring (dem->demangling_style_name,
- strlen (dem->demangling_style_name));
- }
- }
- if (current_demangling_style == unknown_demangling)
- {
- /* This can happen during initialization if gdb is compiled with
- a DEMANGLING_STYLE value that is unknown, so pick the first
- one as the default. */
- current_demangling_style = libiberty_demanglers[0].demangling_style;
- current_demangling_style_string =
- savestring (
- libiberty_demanglers[0].demangling_style_name,
- strlen (libiberty_demanglers[0].demangling_style_name));
- warning ("`%s' style demangling chosen as the default.\n",
- current_demangling_style_string);
- }
- }
-}
-
-/* Fake a "set demangle-style" command. */
-
-void
-set_demangling_style (char *style)
-{
- if (current_demangling_style_string != NULL)
- {
- xfree (current_demangling_style_string);
- }
- current_demangling_style_string = savestring (style, strlen (style));
- set_demangling_command ((char *) NULL, 0, (struct cmd_list_element *) NULL);
+ /* We should have found a match, given we only add known styles to
+ the enumeration list. */
+ gdb_assert (dem->demangling_style != unknown_demangling);
}
/* G++ uses a special character to indicate certain internal names. Which
static char cplus_markers[] = {'$', '.', '\0'};
+/* See documentation in gdb-demangle.h. */
+
int
is_cplus_marker (int c)
{
return c && strchr (cplus_markers, c) != NULL;
}
+/* Demangle the given string in the current language. */
+
+static void
+demangle_command (const char *args, int from_tty)
+{
+ char *demangled;
+ const char *name;
+ const char *arg_start;
+ int processing_args = 1;
+ const struct language_defn *lang;
+
+ std::string arg_buf = args != NULL ? args : "";
+ arg_start = arg_buf.c_str ();
+
+ std::string lang_name;
+ while (processing_args
+ && *arg_start == '-')
+ {
+ const char *p = skip_to_space (arg_start);
+
+ if (strncmp (arg_start, "-l", p - arg_start) == 0)
+ lang_name = extract_arg (&p);
+ else if (strncmp (arg_start, "--", p - arg_start) == 0)
+ processing_args = 0;
+ else
+ report_unrecognized_option_error ("demangle", arg_start);
+
+ arg_start = skip_spaces (p);
+ }
+
+ name = arg_start;
+
+ if (*name == '\0')
+ error (_("Usage: demangle [-l LANGUAGE] [--] NAME"));
+
+ if (!lang_name.empty ())
+ {
+ enum language lang_enum;
+
+ lang_enum = language_enum (lang_name.c_str ());
+ if (lang_enum == language_unknown)
+ error (_("Unknown language \"%s\""), lang_name.c_str ());
+ lang = language_def (lang_enum);
+ }
+ else
+ lang = current_language;
+
+ demangled = language_demangle (lang, name, DMGL_ANSI | DMGL_PARAMS);
+ if (demangled != NULL)
+ {
+ printf_filtered ("%s\n", demangled);
+ xfree (demangled);
+ }
+ else
+ error (_("Can't demangle \"%s\""), name);
+}
+
void
_initialize_demangler (void)
{
- struct cmd_list_element *set, *show;
int i, ndems;
- /* Fill the demangling_style_names[] array. */
+ /* Fill the demangling_style_names[] array, and set the default
+ demangling style chosen at compilation time. */
for (ndems = 0;
libiberty_demanglers[ndems].demangling_style != unknown_demangling;
ndems++)
;
- demangling_style_names = xcalloc (ndems + 1, sizeof (char *));
+ demangling_style_names = XCNEWVEC (const char *, ndems + 1);
for (i = 0;
libiberty_demanglers[i].demangling_style != unknown_demangling;
i++)
- demangling_style_names[i] =
- xstrdup (libiberty_demanglers[i].demangling_style_name);
-
- set = add_set_enum_cmd ("demangle-style", class_support,
- demangling_style_names,
- (const char **) ¤t_demangling_style_string,
- "Set the current C++ demangling style.\n\
-Use `set demangle-style' without arguments for a list of demangling styles.",
- &setlist);
- show = add_show_from_set (set, &showlist);
- set_cmd_sfunc (set, set_demangling_command);
-
- /* Set the default demangling style chosen at compilation time. */
- set_demangling_style (DEFAULT_DEMANGLING_STYLE);
+ {
+ demangling_style_names[i]
+ = xstrdup (libiberty_demanglers[i].demangling_style_name);
+
+ if (current_demangling_style_string == NULL
+ && strcmp (DEFAULT_DEMANGLING_STYLE, demangling_style_names[i]) == 0)
+ current_demangling_style_string = demangling_style_names[i];
+ }
+
+ add_setshow_boolean_cmd ("demangle", class_support, &demangle, _("\
+Set demangling of encoded C++/ObjC names when displaying symbols."), _("\
+Show demangling of encoded C++/ObjC names when displaying symbols."), NULL,
+ NULL,
+ show_demangle,
+ &setprintlist, &showprintlist);
+
+ add_setshow_boolean_cmd ("asm-demangle", class_support, &asm_demangle, _("\
+Set demangling of C++/ObjC names in disassembly listings."), _("\
+Show demangling of C++/ObjC names in disassembly listings."), NULL,
+ NULL,
+ show_asm_demangle,
+ &setprintlist, &showprintlist);
+
+ add_setshow_enum_cmd ("demangle-style", class_support,
+ demangling_style_names,
+ ¤t_demangling_style_string, _("\
+Set the current C++ demangling style."), _("\
+Show the current C++ demangling style."), _("\
+Use `set demangle-style' without arguments for a list of demangling styles."),
+ set_demangling_command,
+ show_demangling_style_names,
+ &setlist, &showlist);
+
+ add_cmd ("demangle", class_support, demangle_command, _("\
+Demangle a mangled name.\n\
+Usage: demangle [-l LANGUAGE] [--] NAME\n\
+If LANGUAGE is not specified, NAME is demangled in the current language."),
+ &cmdlist);
}
projects / deliverable / binutils-gdb.git / blobdiff