* Makefile.in (DEMANGLING_STYLE): New define to set default

demangling style for C++.  Defaults to "auto".
	* Makefile.in (DEMANGLE_OPTS):  Use DEMANGLING_STYLE.
	* Makefile.in (SFILES_MAINDIR):  Add demangle.c
	* Makefile.in (OBS):  Add demangle.o
	* cplus-dem.c (GNU_DEMANGLING, ARM_DEMANGLING, LUCID_DEMANGLING):
	Remove compile time decisions about demangling style and replace
	with runtime decisions using current_demangling_style.
	* cplus-dem.c (main):  Expand code included during building of
	standalone demangler to recognize demangling style options.
	* dbxread.c (demangle.h):  Include.
	* dbxread.c (read_ofile_symtab, process_one_symbol):  Set GNU C++
	demangling style if processing g++ code and current demangling style
	is auto (Note: this feature currently disabled.)
	* demangle.c:  New file, generic demangling control.
	* demangle.h (demangling_styles):  New enumeration to select one
	of several demangling styles.  Also define string names for each
	style.
	* demangle.h (set_demangling_style):  Add prototype.
	* dwarfread.c (demangle.h):  Include.
	* dwarfread.c (GPLUS_PRODUCER, LCC_PRODUCER, CFRONT_PRODUCER):
	New producer string prefixes to recognize.
	* dwarfread.c (handle_producer):  Consolidate actions for specific
	producers.  Set demangling style based on producer string if
	current style is auto.  (Note: this feature currently disabled.)
	* config/ncr3000.mt (DEMANGLE_OPTS):  Remove.
This commit is contained in:
Fred Fish 1992-07-14 02:13:12 +00:00
parent d48da190b5
commit 2dbde378c4
7 changed files with 442 additions and 91 deletions

View File

@ -71,6 +71,7 @@ cplus-dem.c
createtags
dbxread.c
defs.h
demangle.c
demangle.h
depend
doc

View File

@ -1,3 +1,32 @@
Mon Jul 13 19:06:54 1992 Fred Fish (fnf@cygnus.com)
* Makefile.in (DEMANGLING_STYLE): New define to set default
demangling style for C++. Defaults to "auto".
* Makefile.in (DEMANGLE_OPTS): Use DEMANGLING_STYLE.
* Makefile.in (SFILES_MAINDIR): Add demangle.c
* Makefile.in (OBS): Add demangle.o
* cplus-dem.c (GNU_DEMANGLING, ARM_DEMANGLING, LUCID_DEMANGLING):
Remove compile time decisions about demangling style and replace
with runtime decisions using current_demangling_style.
* cplus-dem.c (main): Expand code included during building of
standalone demangler to recognize demangling style options.
* dbxread.c (demangle.h): Include.
* dbxread.c (read_ofile_symtab, process_one_symbol): Set GNU C++
demangling style if processing g++ code and current demangling style
is auto (Note: this feature currently disabled.)
* demangle.c: New file, generic demangling control.
* demangle.h (demangling_styles): New enumeration to select one
of several demangling styles. Also define string names for each
style.
* demangle.h (set_demangling_style): Add prototype.
* dwarfread.c (demangle.h): Include.
* dwarfread.c (GPLUS_PRODUCER, LCC_PRODUCER, CFRONT_PRODUCER):
New producer string prefixes to recognize.
* dwarfread.c (handle_producer): Consolidate actions for specific
producers. Set demangling style based on producer string if
current style is auto. (Note: this feature currently disabled.)
* config/ncr3000.mt (DEMANGLE_OPTS): Remove.
Sat Jul 11 18:23:58 1992 John Gilmore (gnu at cygnus.com)
* config/sun4sol2.mh: Remove -xs flag, default INSTALL to cp.

View File

@ -168,15 +168,20 @@ DIST=gdb
LINT=/usr/5bin/lint
LINTFLAGS= -I${BFD_DIR}
# Select demangler to use.
DEMANGLER=cplus-dem
# 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", "cfront", 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 DEMANGLING_STYLE in the
# appropriate target dependent makefile fragment.
DEMANGLING_STYLE = "auto"
# Select options to use when compiling ${DEMANGLER}.c. The default is no
# options, which is correct for most targets, and also defaults to g++ style
# demangling. For other demangling styles, such as the Annotated C++
# Reference Manual (section 7.2.1c) style, set this define in the target-
# dependent makefile fragment.
DEMANGLE_OPTS=
# Select demangler to use.
DEMANGLER = cplus-dem
# Select options to use when compiling ${DEMANGLER}.c.
DEMANGLE_OPTS = -DDEMANGLING_STYLE=${DEMANGLING_STYLE}
# Host and target-dependent makefile fragments come in here.
####
@ -186,7 +191,7 @@ DEMANGLE_OPTS=
# Files which are included via a config/* Makefile fragment
# should *not* be specified here; they're in "ALLDEPFILES".
SFILES_MAINDIR = \
blockframe.c breakpoint.c command.c core.c \
blockframe.c breakpoint.c command.c core.c demangle.c \
environ.c eval.c expprint.c findvar.c infcmd.c inflow.c infrun.c \
main.c printcmd.c gdbtypes.c \
remote.c source.c stack.c symmisc.c symtab.c symfile.c \
@ -280,7 +285,7 @@ OBS = main.o blockframe.o breakpoint.o findvar.o stack.o source.o \
command.o utils.o expprint.o environ.o version.o gdbtypes.o \
copying.o $(DEPFILES) ${DEMANGLER}.o mem-break.o target.o \
inftarg.o ieee-float.o putenv.o parse.o language.o $(YYOBJ) \
buildsym.o objfiles.o minsyms.o maint.o \
buildsym.o objfiles.o minsyms.o maint.o demangle.o \
dbxread.o coffread.o elfread.o dwarfread.o xcoffread.o mipsread.o
RAPP_OBS = rgdb.o rudp.o rserial.o serial.o udp.o $(XDEPFILES)

View File

@ -32,10 +32,6 @@
#include <ctype.h>
#include <string.h>
#if !defined (GNU_DEMANGLING) && !defined (ARM_DEMANGLING)
# define GNU_DEMANGLING 1
#endif
/* This is '$' on systems where the assembler can deal with that.
Where the assembler can't, it's '.' (but on many systems '.' is
used for other things). */
@ -91,11 +87,8 @@ static const struct optable
"ami", "-=", DMGL_ANSI, /* ansi */
"mult", "*", 0, /* old */
"ml", "*", DMGL_ANSI, /* ansi */
#ifdef ARM_DEMANGLING
"amu", "*=", DMGL_ANSI, /* ansi */
#else
"aml", "*=", DMGL_ANSI, /* ansi */
#endif
"amu", "*=", DMGL_ANSI, /* ansi (ARM/Lucid) */
"aml", "*=", DMGL_ANSI, /* ansi (GNU/g++) */
"convert", "+", 0, /* old (unary +) */
"negate", "-", 0, /* old (unary -) */
"trunc_mod", "%", 0, /* old */
@ -134,11 +127,8 @@ static const struct optable
"rs", ">>", DMGL_ANSI, /* ansi */
"ars", ">>=", DMGL_ANSI, /* ansi */
"component", "->", 0, /* old */
#ifdef LUCID_DEMANGLING
"pt", "->", DMGL_ANSI, /* ansi; Lucid C++ form */
#else
"rf", "->", DMGL_ANSI, /* ansi */
#endif
"rf", "->", DMGL_ANSI, /* ansi; ARM/GNU form */
"indirect", "*", 0, /* old */
"method_call", "->()", 0, /* old */
"addr", "&", 0, /* old (unary &) */
@ -434,9 +424,7 @@ demangle_signature (declp, mangled, work)
{
int success = 1;
int func_done = 0;
#ifdef GNU_DEMANGLING
int expect_func = 0;
#endif
#ifndef LONGERNAMES
const char *premangle;
#endif
@ -451,9 +439,11 @@ demangle_signature (declp, mangled, work)
{
case 'Q':
success = demangle_qualified (declp, mangled, work);
#ifdef GNU_DEMANGLING
expect_func = 1;
#endif
if (current_demangling_style == auto_demangling ||
current_demangling_style == gnu_demangling)
{
expect_func = 1;
}
break;
case 'S':
@ -477,9 +467,11 @@ demangle_signature (declp, mangled, work)
remember_type (premangle, *mangled - premangle, work);
}
#endif
#ifdef GNU_DEMANGLING
expect_func = 1;
#endif
if (current_demangling_style == auto_demangling ||
current_demangling_style == gnu_demangling)
{
expect_func = 1;
}
break;
case 'F':
@ -508,39 +500,47 @@ demangle_signature (declp, mangled, work)
break;
default:
#ifdef GNU_DEMANGLING
/* Assume we have stumbled onto the first outermost function
argument token, and start processing args. */
func_done = 1;
success = demangle_args (declp, mangled, work);
#else
/* Non-GNU demanglers use a specific token to mark the start
of the outermost function argument tokens. Typically 'F',
for ARM-demangling, for example. So if we find something
we are not prepared for, it must be an error. */
success = 0;
#endif
if (current_demangling_style == auto_demangling ||
current_demangling_style == gnu_demangling)
{
/* Assume we have stumbled onto the first outermost function
argument token, and start processing args. */
func_done = 1;
success = demangle_args (declp, mangled, work);
}
else
{
/* Non-GNU demanglers use a specific token to mark the start
of the outermost function argument tokens. Typically 'F',
for ARM-demangling, for example. So if we find something
we are not prepared for, it must be an error. */
success = 0;
}
break;
}
#ifdef GNU_DEMANGLING
if (success && expect_func)
if (current_demangling_style == auto_demangling ||
current_demangling_style == gnu_demangling)
{
func_done = 1;
success = demangle_args (declp, mangled, work);
if (success && expect_func)
{
func_done = 1;
success = demangle_args (declp, mangled, work);
}
}
#endif
}
if (success && !func_done)
{
#ifdef GNU_DEMANGLING
/* With GNU style demangling, bar__3foo is 'foo::bar(void)', and
bar__3fooi is 'foo::bar(int)'. We get here when we find the
first case, and need to ensure that the '(void)' gets added to
the current declp. Note that with ARM_DEMANGLING, the first
case represents the name of a static data member 'foo::bar',
which is in the current declp, so we leave it alone. */
success = demangle_args (declp, mangled, work);
#endif
if (current_demangling_style == auto_demangling ||
current_demangling_style == gnu_demangling)
{
/* With GNU style demangling, bar__3foo is 'foo::bar(void)', and
bar__3fooi is 'foo::bar(int)'. We get here when we find the
first case, and need to ensure that the '(void)' gets added to
the current declp. Note that with ARM, the first case
represents the name of a static data member 'foo::bar',
which is in the current declp, so we leave it alone. */
success = demangle_args (declp, mangled, work);
}
}
if (success && work -> static_type && PRINT_ARG_TYPES)
{
@ -895,9 +895,18 @@ demangle_prefix (declp, mangled, work)
int success = 1;
const char *scan;
if ((scan = strstr (*mangled, "__")) == NULL)
scan = strstr (*mangled, "__");
if (scan == NULL)
{
success = gnu_special (declp, mangled, work);
if (current_demangling_style == auto_demangling ||
current_demangling_style == gnu_demangling)
{
success = gnu_special (declp, mangled, work);
}
else
{
success = 0;
}
}
else if (work -> static_type)
{
@ -1575,9 +1584,11 @@ demangle_args (declp, type, work)
{
return (0);
}
#ifdef ARM_DEMANGLING
t--;
#endif
if (current_demangling_style == lucid_demangling ||
current_demangling_style == cfront_demangling)
{
t--;
}
/* Validate the type index. Protect against illegal indices from
malformed type strings. */
if ((t < 0) || (t >= work -> ntypes))
@ -1664,27 +1675,28 @@ demangle_function_name (declp, mangled, work, scan)
(*mangled) = scan + 2;
#ifdef ARM_DEMANGLING
/* See if we have an ARM style constructor or destructor operator.
If so, then just record it, clear the decl, and return.
We can't build the actual constructor/destructor decl until later,
when we recover the class name from the signature. */
if (strcmp (declp -> b, "__ct") == 0)
if (current_demangling_style == lucid_demangling ||
current_demangling_style == cfront_demangling)
{
work -> constructor = 1;
string_clear (declp);
return;
}
else if (strcmp (declp -> b, "__dt") == 0)
{
work -> destructor = 1;
string_clear (declp);
return;
}
#endif
/* See if we have an ARM style constructor or destructor operator.
If so, then just record it, clear the decl, and return.
We can't build the actual constructor/destructor decl until later,
when we recover the class name from the signature. */
if (strcmp (declp -> b, "__ct") == 0)
{
work -> constructor = 1;
string_clear (declp);
return;
}
else if (strcmp (declp -> b, "__dt") == 0)
{
work -> destructor = 1;
string_clear (declp);
return;
}
}
if (declp->p - declp->b >= 3
&& declp->b[0] == 'o'
@ -1996,20 +2008,56 @@ xrealloc (oldmem, size)
return (newmem);
}
#include <stdio.h>
enum demangling_styles current_demangling_style = gnu_demangling;
main (argc, argv)
int argc;
char **argv;
{
char mangled_name[128];
char *result;
if (argc > 1)
int c;
extern char *optarg;
extern int optind;
while ((c = getopt (argc, argv, "s:?")) != EOF)
{
argc--;
argv++;
while (argc-- > 0)
switch (c)
{
demangle_it (*argv);
case '?':
fprintf (stderr, "usage: demangle [-s style] [arg1 [arg2]] ...\n");
fprintf (stderr, "style = { gnu, lucid, cfront }\n");
fprintf (stderr, "reads args from stdin if none supplied\n");
exit (0);
break;
case 's':
if (strcmp (optarg, "gnu") == 0)
{
current_demangling_style = gnu_demangling;
}
else if (strcmp (optarg, "lucid") == 0)
{
current_demangling_style = lucid_demangling;
}
else if (strcmp (optarg, "cfront") == 0)
{
current_demangling_style = cfront_demangling;
}
else
{
fprintf (stderr, "unknown demangling style `%s'\n", optarg);
exit (1);
}
break;
}
}
if (optind < argc)
{
for ( ; optind < argc; optind++)
{
demangle_it (argv[optind]);
}
}
else
@ -2021,4 +2069,4 @@ main (argc, argv)
}
}
#endif
#endif /* main */

185
gdb/demangle.c Normal file
View File

@ -0,0 +1,185 @@
/* 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>
#ifndef DEMANGLING_STYLE
# define DEMANGLING_STYLE AUTO_DEMANGLING_STYLE_STRING
#endif
/* The current demangling style in affect. Global so that the demangler
can read it (FIXME: change the interface) */
enum demangling_styles current_demangling_style;
/* 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"},
{CFRONT_DEMANGLING_STYLE_STRING,
cfront_demangling,
"ARM (cfront) style demangling"},
{NULL, 0, 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++)
{
if (strcmp (current_demangling_style_string,
dem -> demangling_style_name) == 0)
{
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 (DEMANGLING_STYLE);
}

View File

@ -1,4 +1,4 @@
/* Demangler defs for GNU C++ style demangling.
/* Defs for interface to demanglers.
Copyright 1992 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
@ -18,3 +18,20 @@
#define DMGL_PARAMS (1 << 0) /* Include function args */
#define DMGL_ANSI (1 << 1) /* Include const, volatile, etc */
extern enum demangling_styles
{
unknown_demangling = 0,
auto_demangling,
gnu_demangling,
lucid_demangling,
cfront_demangling
} current_demangling_style;
#define GNU_DEMANGLING_STYLE_STRING "gnu"
#define LUCID_DEMANGLING_STYLE_STRING "lucid"
#define CFRONT_DEMANGLING_STYLE_STRING "cfront"
#define AUTO_DEMANGLING_STYLE_STRING "auto"
extern void
set_demangling_style PARAMS ((char *));

View File

@ -53,6 +53,7 @@ other things to work on, if you get bored. :-)
#include "libbfd.h" /* FIXME Secret Internal BFD stuff (bfd_read) */
#include "elf/dwarf.h"
#include "buildsym.h"
#include "demangle.h"
#ifdef MAINTENANCE /* Define to 1 to compile in some maintenance stuff */
#define SQUAWK(stuff) dwarfwarn stuff
@ -70,6 +71,18 @@ typedef unsigned int DIE_REF; /* Reference to a DIE */
#define GCC_PRODUCER "GNU C "
#endif
#ifndef GPLUS_PRODUCER
#define GPLUS_PRODUCER "GNU C++ "
#endif
#ifndef LCC_PRODUCER
#define LCC_PRODUCER "LUCID C++ "
#endif
#ifndef CFRONT_PRODUCER
#define CFRONT_PRODUCER "CFRONT " /* A wild a** guess... */
#endif
#define STREQ(a,b) (strcmp(a,b)==0)
#define STREQN(a,b,n) (strncmp(a,b,n)==0)
@ -301,6 +314,9 @@ target_to_host PARAMS ((char *, int, int, struct objfile *));
static void
add_enum_psymbol PARAMS ((struct dieinfo *, struct objfile *));
static void
handle_producer PARAMS ((char *));
static void
read_file_scope PARAMS ((struct dieinfo *, char *, char *, struct objfile *));
@ -1530,6 +1546,57 @@ read_func_scope (dip, thisdie, enddie, objfile)
list_in_scope = &file_symbols;
}
/*
LOCAL FUNCTION
handle_producer -- process the AT_producer attribute
DESCRIPTION
Perform any operations that depend on finding a particular
AT_producer attribute.
*/
static void
handle_producer (producer)
char *producer;
{
/* If this compilation unit was compiled with g++ or gcc, then set the
processing_gcc_compilation flag. */
processing_gcc_compilation =
STREQN (producer, GPLUS_PRODUCER, strlen (GPLUS_PRODUCER))
|| STREQN (producer, GCC_PRODUCER, strlen (GCC_PRODUCER));
/* Select a demangling style if we can identify the producer and if
the current style is auto. We leave the current style alone if it
is not auto. We also leave the demangling style alone if we find a
gcc (cc1) producer, as opposed to a g++ (cc1plus) producer. */
#if 0 /* Works, but is disabled for now. -fnf */
if (current_demangling_style == auto_demangling)
{
if (STREQN (producer, GPLUS_PRODUCER, strlen (GPLUS_PRODUCER)))
{
set_demangling_style (GNU_DEMANGLING_STYLE_STRING);
}
else if (STREQN (producer, LCC_PRODUCER, strlen (LCC_PRODUCER)))
{
set_demangling_style (LUCID_DEMANGLING_STYLE_STRING);
}
else if (STREQN (producer, CFRONT_PRODUCER, strlen (CFRONT_PRODUCER)))
{
set_demangling_style (CFRONT_DEMANGLING_STYLE_STRING);
}
}
#endif
}
/*
LOCAL FUNCTION
@ -1570,8 +1637,7 @@ read_file_scope (dip, thisdie, enddie, objfile)
}
if (dip -> at_producer != NULL)
{
processing_gcc_compilation =
STREQN (dip -> at_producer, GCC_PRODUCER, strlen (GCC_PRODUCER));
handle_producer (dip -> at_producer);
}
numutypes = (enddie - thisdie) / 4;
utypes = (struct type **) xmalloc (numutypes * sizeof (struct type *));