binutils-gdb/gdb/demangle.c

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/* Basic C++ demangling support for GDB.
Copyright 1991, 1992 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
(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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* This file contains support code for C++ demangling that is common
to a styles of demangling, and GDB specific. */
#include "defs.h"
#include "command.h"
#include "gdbcmd.h"
#include "demangle.h"
#include <string.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
the executable it has loaded. It can be set to a specific style ("gnu",
"lucid", "arm", 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. */
#ifndef DEFAULT_DEMANGLING_STYLE
# define DEFAULT_DEMANGLING_STYLE AUTO_DEMANGLING_STYLE_STRING
#endif
/* String name for the current demangling style. Set by the "set demangling"
command, printed as part of the output by the "show demangling" command. */
static char *current_demangling_style_string;
/* List of supported demangling styles. Contains the name of the style as
seen by the user, and the enum value that corresponds to that style. */
static const struct demangler
{
char *demangling_style_name;
enum demangling_styles demangling_style;
char *demangling_style_doc;
} demanglers [] =
{
{AUTO_DEMANGLING_STYLE_STRING,
auto_demangling,
"Automatic selection based on executable"},
{GNU_DEMANGLING_STYLE_STRING,
gnu_demangling,
"GNU (g++) style demangling"},
{LUCID_DEMANGLING_STYLE_STRING,
lucid_demangling,
"Lucid (lcc) style demangling"},
{ARM_DEMANGLING_STYLE_STRING,
arm_demangling,
"ARM style demangling"},
{NULL, unknown_demangling, NULL}
};
/* show current demangling style. */
static void
show_demangling_command (ignore, from_tty)
char *ignore;
int from_tty;
{
/* done automatically by show command. */
}
/* set current demangling style. called by the "set demangling" command
after it has updated the current_demangling_style_string to match
what the user has entered.
if the user has entered a string that matches a known demangling style
name in the demanglers[] array then just leave the string alone and update
the current_demangling_style enum value to match.
if the user has entered a string that doesn't match, including an empty
string, then print a list of the currently known styles and restore
the current_demangling_style_string to match the current_demangling_style
enum value.
Note: Assumes that current_demangling_style_string always points to
a malloc'd string, even if it is a null-string. */
static void
set_demangling_command (ignore, from_tty)
char *ignore;
int from_tty;
{
const struct demangler *dem;
/* 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. */
for (dem = demanglers; dem -> demangling_style_name != NULL; dem++)
{
* defs.h (STRCMP, STREQ, STREQN): New macros. * defs.h (demangle_and_match): Remove prototype. * dwarfread.c (STREQ, STREQN): Remove macros, replaced with STREQ and STREQN defined in defs.h. * dwarfread.c (set_cu_language): For completely unknown languages, try to deduce the language from the filename. Retain behavior that for known languages we don't know how to handle, we use language_unknown. * dwarfread.c (enum_type, symthesize_typedef): Initialize language and demangled name fields in symbol. * dwarfread.c, mipsread.c, partial-stab.h: For all usages of ADD_PSYMBOL_TO_LIST, add language and objfile parameters. * dwarfread.c (new_symbol): Attempt to demangle C++ symbol names and cache the results in SYMBOL_DEMANGLED_NAME for the symbol. * elfread.c (STREQ): Remove macro, use STREQ defined in defs.h. Replace usages throughout. * elfread.c (demangle.h): Include. * elfread.c (record_minimal_symbol): Remove prototype and function. * gdbtypes.h, symtab.h (B_SET, B_CLR, B_TST, B_TYPE, B_BYTES, B_CLRALL): Moved from symtab.h to gdbtypes.h. * infcmd.c (jump_command): Remove code to demangle name and add it to a cleanup list. Now just use SYMBOL_DEMANGLED_NAME. * minsyms.c (demangle.h): Include. * minsyms.c (lookup_minimal_symbol): Indent comment to match code. * minsyms.c (install_minimal_symbols): Attempt to demangle symbol names as C++ names, and cache them in SYMBOL_DEMANGLED_NAME. * mipsread.c (psymtab_language): Add static variable. * stabsread.c (demangle.h): Include. * stabsread.c (define_symbol): Attempt to demangle C++ symbol names and cache them in the SYMBOL_DEMANGLED_NAME field. * stack.c (return_command): Remove explicit demangling of name and use of cleanups. Just use SYMBOL_DEMANGLED_NAME. * symfile.c (demangle.h): Include. * symfile.c (add_psymbol_to_list, add_psymbol_addr_to_list): Fix to match macros in symfile.h and allow them to be compiled if INLINE_ADD_PSYMBOL is not true. * symfile.h (INLINE_ADD_PSYMBOL): Default to true if not set. * symfile.h (ADD_PSYMBOL_*): Add language and objfile parameters. Add code to demangle and cache C++ symbol names. Use macro form if INLINE_ADD_PSYMBOL is true, otherwise use C function form. * symmisc.c (add_psymbol_to_list, add_psymbol_addr_to_list): Remove, also defined in symfile.c, which we already fixed. * symtab.c (expensive_mangler): Remove prototype and function. * symtab.c (find_methods): Remove physnames parameter and fix prototype to match. * symtab.c (completion_list_add_symbol): Name changed to completion_list_add_name. * symtab.c (COMPLETION_LIST_ADD_SYMBOL): New macro, adds both the normal symbol name and the cached C++ demangled name. * symtab.c (lookup_demangled_partial_symbol, lookup_demangled_block_symbol): Remove prototypes and functions. * symtab.c (lookup_symbol): Remove use of expensive_mangler, use lookup_block_symbol instead of lookup_demangled_block_symbol. Remove code to try demangling names and matching them. * symtab.c (lookup_partial_symbol, lookup_block_symbol): Fix to try matching the cached demangled name if no match is found using the regular symbol name. * symtab.c (find_methods): Remove unused physnames array. * symtab.c (name_match, NAME_MATCH): Remove function and macro, replaced with SYMBOL_MATCHES_REGEXP from symtab.h. * symtab.c (completion_list_add_symbol): Rewrite to use cached C++ demangled symbol names. * symtab.h: Much reformatting of structures and such to add whitespace to make them more readable, and make them more consistent with other gdb structure definitions. * symtab.h (general_symbol_info): New struct containing fields common to all symbols. * symtab.h (SYMBOL_LANGUAGE, SYMBOL_DEMANGLED_NAME, SYMBOL_SOURCE_NAME, SYMBOL_LINKAGE_NAME, SYMBOL_MATCHES_NAME, SYMBOL_MATCHES_REGEXP, MSYMBOL_INFO, MSYMBOL_TYPE): New macros. * symtab. (struct minimal_symbol, struct partial_symbol, struct symbol): Use general_symbol_info struct. * utils.c (demangle_and_match): Remove, no longer used. * valops.c (demangle.h): Include. * xcoffexec.c (eq): Remove macro, replace usages with STREQ. * blockframe.c, breakpoint.c, c-exp.y, c-valprint.c, dbxread.c, infcmd.c, m2-exp.y, minsyms.c, objfiles.h, solib.c, stack.c, symmisc.c, symtab.c, valops.c: Replace references to minimal symbol fields with appropriate macros. * breakpoint.c, buildsym.c, c-exp.y, c-typeprint.c, c-valprint.c, coffread.c, command.c, convex-tdep.c, cp-valprint.c, dbxread.c, demangle.c, elfread.c, energize.c, environ.c, exec.c, gdbtypes.c, i960-tdep.c, infrun.c, infrun-hacked.c, language.c, main.c, minsyms.c, mipsread.c, partial-stab.h, remote-es1800.c, remote-nindy.c, remote-udi.c, rs6000-tdep.c, solib.c, source.c, sparc-pinsn.c, stabsread.c, standalone.c, state.c, stuff.c, symfile.c, symmisc.c, symtab.c, symtab.h, tm-sysv4.h, tm-ultra3.h, values.c, xcoffexec.c, xcoffread.c: Replace strcmp and strncmp usages with STREQ, STREQN, or STRCMP as appropriate. * breakpoint.c, buildsym.c, c-typeprint.c, expprint.c, findvar.c, mipsread.c, printcmd.c, source.c, stabsread.c, stack.c, symmisc.c, tm-29k.h, valops.c, values.c: Replace SYMBOL_NAME references with SYMBOL_SOURCE_NAME or SYMBOL_LINKAGE_NAME as appropriate. * buildsym.c (start_subfile, patch_subfile_names): Default the source language to what can be deduced from the filename. * buildsym.c (end_symtab): Update the source language in the allocated symtab to match what we have been using. * buildsym.h (struct subfile): Add a language field. * c-typeprint.c (c_print_type): Remove code to do explicit demangling. * dbxread.c (psymtab_language): Add static variable. * dbxread.c (start_psymtab): Initialize psymtab_language using deduce_language_from_filename.
1992-12-23 07:34:57 +01:00
if (STREQ (current_demangling_style_string,
dem -> demangling_style_name))
{
current_demangling_style = dem -> demangling_style;
break;
}
}
/* 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_name == NULL)
{
if (*current_demangling_style_string != '\0')
{
printf ("Unknown demangling style `%s'.\n",
current_demangling_style_string);
}
printf ("The currently understood settings are:\n\n");
for (dem = demanglers; dem -> demangling_style_name != NULL; dem++)
{
printf ("%-10s %s\n", dem -> demangling_style_name,
dem -> demangling_style_doc);
if (dem -> demangling_style == current_demangling_style)
{
free (current_demangling_style_string);
current_demangling_style_string =
strdup (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 = demanglers[0].demangling_style;
current_demangling_style_string =
strdup (demanglers[0].demangling_style_name);
warning ("`%s' style demangling chosen as the default.\n",
current_demangling_style_string);
}
}
}
/* Fake a "set demangling" command. */
void
set_demangling_style (style)
char *style;
{
if (current_demangling_style_string != NULL)
{
free (current_demangling_style_string);
}
current_demangling_style_string = strdup (style);
set_demangling_command ((char *) NULL, 0);
}
void
_initialize_demangler ()
{
struct cmd_list_element *set, *show;
set = add_set_cmd ("demangle-style", class_support, var_string_noescape,
(char *) &current_demangling_style_string,
"Set the current C++ demangling style.",
&setlist);
show = add_show_from_set (set, &showlist);
set -> function.cfunc = set_demangling_command;
show -> function.cfunc = show_demangling_command;
/* Set the default demangling style chosen at compilation time. */
set_demangling_style (DEFAULT_DEMANGLING_STYLE);
set_cplus_marker_for_demangling (CPLUS_MARKER);
}