1999-04-16 03:35:26 +02:00
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/* Language independent support for printing types for GDB, the GNU debugger.
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2001-03-06 09:22:02 +01:00
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Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1998, 1999,
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2001-11-10 22:34:56 +01:00
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2000, 2001 Free Software Foundation, Inc.
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1999-04-16 03:35:26 +02:00
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1999-07-07 22:19:36 +02:00
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This file is part of GDB.
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1999-04-16 03:35:26 +02:00
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1999-07-07 22:19:36 +02:00
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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1999-04-16 03:35:26 +02:00
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1999-07-07 22:19:36 +02:00
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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1999-04-16 03:35:26 +02:00
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1999-07-07 22:19:36 +02:00
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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1999-04-16 03:35:26 +02:00
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#include "defs.h"
|
2002-07-29 Andrew Cagney <ac131313@redhat.com>
* gdb_obstack.h: New file.
* symtab.h: Include "gdb_obstack.h" instead of "obstack.h".
(obstack_chunk_alloc, obstack_chunk_free): Delete macros.
* objfiles.h: Include "gdb_obstack.h".
* Makefile.in (gdb_obstack_h): Define.
(symtab_h): Add $(gdb_obstack_h).
(objfiles_h): Add $(gdb_obstack_h).
* objfiles.c: Include "gdb_obstack.h" instead of "obstack.h".
* macrotab.c, cp-valprint.c, dbxread.c: Ditto.
* ch-typeprint.c, ch-valprint.c, dstread.c: Ditto.
* macroexp.c, p-typeprint.c, stabsread.c: Ditto.
* symtab.c, f-typeprint.c, mdebugread.c: Ditto.
* p-valprint.c, symmisc.c, typeprint.c: Ditto.
* symfile.c, coffread.c, c-typeprint.c: Ditto.
* buildsym.c, bcache.c, ada-typeprint.c: Ditto.
* Makefile.in (bcache.o): Update dependencies.
(buildsym.o, c-typeprint.o, ch-typeprint.o): Ditto.
(ch-valprint.o, coffread.o, cp-valprint.o): Ditto.
(dbxread.o, dstread.o, f-typeprint.o): Ditto.
(objfiles.o, p-typeprint.o, p-valprint.o): Ditto.
(stabsread.o, symfile.o, symmisc.o): Ditto.
(symtab.o, typeprint.o, macroexp.o): Ditto.
(macrotab.o, mdebugread.o): Ditto.
(f_lang_h, coff_sym_h, coff_symconst_h): Define.
(coff_ecoff_h, aout_aout64_h): Define.
(aout_stabs_gnu_h, libaout_h): Define.
2002-07-30 00:55:26 +02:00
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#include "gdb_obstack.h"
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1999-04-16 03:35:26 +02:00
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#include "bfd.h" /* Binary File Description */
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "expression.h"
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#include "value.h"
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#include "gdbcore.h"
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#include "command.h"
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#include "gdbcmd.h"
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#include "target.h"
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#include "language.h"
|
(Changes from Daniel Berlin, with revisions by Jim Blandy.)
Abstract out operations specific to particular C++ ABI's, and
invoke them through a function table. This removes the C++ ABI
dependencies scattered throughout the code, and allows us to
cleanly add support for new C++ ABI's.
* cp-abi.h, cp-abi.h, gnu-v2-abi.c, hpacc-abi.c: New files.
* c-typeprint.c, c-valprint.c, dbxread.c, eval.c, gdbtypes.c,
jv-typeprint.c, linespec.c, symtab.c, typeprint.c, valops.c:
#include "cp-abi.h". These files all use functions now declared
there.
* symtab.h (OPNAME_PREFIX_P, VTBL_PREFIX_P, DESTRUCTOR_PREFIX_P):
Deleted. These services are now provided by functions declared in
cp-abi.h.
* value.h (value_rtti_type, value_virtual_fn_field): Same.
* values.c (value_virtual_fn_field): Same, for this definition.
* valops.c (value_rtti_type): Same.
* c-typeprint.c (c_type_print_base): Use the functions from
"cp-abi.h", instead of the old macros, or hard-coded ABI-specific
tests.
* dbxread.c (record_minimal_symbol): Same.
* gdbtypes.c (get_destructor_fn_field, virtual_base_index,
virtual_base_index_skip_primaries): Same.
* jv-typeprint.c (java_type_print_base): Same.
* linespec.c (find_methods, decode_line_1): Same.
* symtab.c (gdb_mangle_name): Same.
* Makefile.in (SFILES): Add the new .c files mentioned above.
(cp_abi_h): New variable.
(COMMON_OBS): Add gnu-v2-abi.o, hpacc-abi.o, and cp-abi.o.
(cp-abi.o, gnu-v2-abi.o, hpacc-abi.o): New targets.
(c-typeprint.o, c-valprint.o, dbxread.o, eval.o, gdbtypes.o,
jv-typeprint.o, symtab.o, linespec.o, typeprint.o, valops.o): Add
dependency on $(cp_abi_h).
2001-04-27 02:19:09 +02:00
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#include "cp-abi.h"
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1999-04-16 03:35:26 +02:00
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#include "gdb_string.h"
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#include <errno.h>
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/* For real-type printing in whatis_exp() */
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extern int objectprint; /* Controls looking up an object's derived type
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using what we find in its vtables. */
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2000-05-28 03:12:42 +02:00
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extern void _initialize_typeprint (void);
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1999-05-25 20:09:09 +02:00
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2000-05-28 03:12:42 +02:00
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static void ptype_command (char *, int);
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1999-04-16 03:35:26 +02:00
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2000-05-28 03:12:42 +02:00
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static struct type *ptype_eval (struct expression *);
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1999-04-16 03:35:26 +02:00
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2000-05-28 03:12:42 +02:00
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static void whatis_command (char *, int);
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1999-04-16 03:35:26 +02:00
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2000-05-28 03:12:42 +02:00
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static void whatis_exp (char *, int);
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1999-04-16 03:35:26 +02:00
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2000-09-04 10:29:25 +02:00
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/* Print a description of a type in the format of a
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typedef for the current language.
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NEW is the new name for a type TYPE. */
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void
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typedef_print (struct type *type, struct symbol *new, struct ui_file *stream)
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{
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CHECK_TYPEDEF (type);
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switch (current_language->la_language)
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{
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#ifdef _LANG_c
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case language_c:
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case language_cplus:
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fprintf_filtered (stream, "typedef ");
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type_print (type, "", stream, 0);
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if (TYPE_NAME ((SYMBOL_TYPE (new))) == 0
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|| !STREQ (TYPE_NAME ((SYMBOL_TYPE (new))), SYMBOL_NAME (new)))
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fprintf_filtered (stream, " %s", SYMBOL_SOURCE_NAME (new));
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break;
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#endif
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#ifdef _LANG_m2
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case language_m2:
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fprintf_filtered (stream, "TYPE ");
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if (!TYPE_NAME (SYMBOL_TYPE (new)) ||
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!STREQ (TYPE_NAME (SYMBOL_TYPE (new)), SYMBOL_NAME (new)))
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fprintf_filtered (stream, "%s = ", SYMBOL_SOURCE_NAME (new));
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else
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fprintf_filtered (stream, "<builtin> = ");
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type_print (type, "", stream, 0);
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break;
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#endif
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#ifdef _LANG_pascal
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case language_pascal:
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fprintf_filtered (stream, "type ");
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fprintf_filtered (stream, "%s = ", SYMBOL_SOURCE_NAME (new));
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type_print (type, "", stream, 0);
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break;
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#endif
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#ifdef _LANG_chill
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case language_chill:
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fprintf_filtered (stream, "SYNMODE ");
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if (!TYPE_NAME (SYMBOL_TYPE (new)) ||
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!STREQ (TYPE_NAME (SYMBOL_TYPE (new)), SYMBOL_NAME (new)))
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fprintf_filtered (stream, "%s = ", SYMBOL_SOURCE_NAME (new));
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else
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fprintf_filtered (stream, "<builtin> = ");
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type_print (type, "", stream, 0);
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break;
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#endif
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default:
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error ("Language not supported.");
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}
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fprintf_filtered (stream, ";\n");
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}
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|
1999-04-16 03:35:26 +02:00
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/* Print a description of a type TYPE in the form of a declaration of a
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variable named VARSTRING. (VARSTRING is demangled if necessary.)
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Output goes to STREAM (via stdio).
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If SHOW is positive, we show the contents of the outermost level
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of structure even if there is a type name that could be used instead.
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If SHOW is negative, we never show the details of elements' types. */
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void
|
2000-07-30 03:48:28 +02:00
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type_print (struct type *type, char *varstring, struct ui_file *stream,
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int show)
|
1999-04-16 03:35:26 +02:00
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{
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LA_PRINT_TYPE (type, varstring, stream, show, 0);
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}
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/* Print type of EXP, or last thing in value history if EXP == NULL.
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show is passed to type_print. */
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static void
|
2000-07-30 03:48:28 +02:00
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whatis_exp (char *exp, int show)
|
1999-04-16 03:35:26 +02:00
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{
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struct expression *expr;
|
2001-11-10 22:34:56 +01:00
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struct value *val;
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1999-04-16 03:35:26 +02:00
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register struct cleanup *old_chain = NULL;
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1999-07-07 22:19:36 +02:00
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struct type *real_type = NULL;
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2000-04-04 06:53:50 +02:00
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struct type *type;
|
1999-04-16 03:35:26 +02:00
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int full = 0;
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int top = -1;
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int using_enc = 0;
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if (exp)
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{
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expr = parse_expression (exp);
|
2000-04-26 14:41:48 +02:00
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old_chain = make_cleanup (free_current_contents, &expr);
|
1999-04-16 03:35:26 +02:00
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val = evaluate_type (expr);
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}
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else
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val = access_value_history (0);
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2000-04-04 06:53:50 +02:00
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type = VALUE_TYPE (val);
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if (objectprint)
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{
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if (((TYPE_CODE (type) == TYPE_CODE_PTR) ||
|
|
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(TYPE_CODE (type) == TYPE_CODE_REF))
|
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&&
|
|
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(TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CLASS))
|
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{
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real_type = value_rtti_target_type (val, &full, &top, &using_enc);
|
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|
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if (real_type)
|
|
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{
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if (TYPE_CODE (type) == TYPE_CODE_PTR)
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|
real_type = lookup_pointer_type (real_type);
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else
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real_type = lookup_reference_type (real_type);
|
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|
}
|
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}
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else if (TYPE_CODE (type) == TYPE_CODE_CLASS)
|
1999-04-16 03:35:26 +02:00
|
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real_type = value_rtti_type (val, &full, &top, &using_enc);
|
2000-04-04 06:53:50 +02:00
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}
|
1999-04-16 03:35:26 +02:00
|
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printf_filtered ("type = ");
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2000-04-04 06:53:50 +02:00
|
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if (real_type)
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{
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|
printf_filtered ("/* real type = ");
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type_print (real_type, "", gdb_stdout, -1);
|
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|
if (! full)
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|
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|
printf_filtered (" (incomplete object)");
|
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printf_filtered (" */\n");
|
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}
|
1999-04-16 03:35:26 +02:00
|
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|
2000-04-04 06:53:50 +02:00
|
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|
|
type_print (type, "", gdb_stdout, show);
|
1999-04-16 03:35:26 +02:00
|
|
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|
printf_filtered ("\n");
|
|
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|
if (exp)
|
|
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|
do_cleanups (old_chain);
|
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|
}
|
|
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|
/* ARGSUSED */
|
|
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|
static void
|
2000-07-30 03:48:28 +02:00
|
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whatis_command (char *exp, int from_tty)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
{
|
|
|
|
|
/* Most of the time users do not want to see all the fields
|
|
|
|
|
in a structure. If they do they can use the "ptype" command.
|
|
|
|
|
Hence the "-1" below. */
|
|
|
|
|
whatis_exp (exp, -1);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Simple subroutine for ptype_command. */
|
|
|
|
|
|
|
|
|
|
static struct type *
|
2000-07-30 03:48:28 +02:00
|
|
|
|
ptype_eval (struct expression *exp)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
{
|
|
|
|
|
if (exp->elts[0].opcode == OP_TYPE)
|
|
|
|
|
{
|
|
|
|
|
return (exp->elts[1].type);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
return (NULL);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* TYPENAME is either the name of a type, or an expression. */
|
|
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|
|
|
|
|
|
|
/* ARGSUSED */
|
|
|
|
|
static void
|
2000-07-30 03:48:28 +02:00
|
|
|
|
ptype_command (char *typename, int from_tty)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
{
|
|
|
|
|
register struct type *type;
|
|
|
|
|
struct expression *expr;
|
|
|
|
|
register struct cleanup *old_chain;
|
|
|
|
|
|
|
|
|
|
if (typename == NULL)
|
|
|
|
|
{
|
|
|
|
|
/* Print type of last thing in value history. */
|
|
|
|
|
whatis_exp (typename, 1);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
expr = parse_expression (typename);
|
2000-04-26 14:41:48 +02:00
|
|
|
|
old_chain = make_cleanup (free_current_contents, &expr);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
type = ptype_eval (expr);
|
|
|
|
|
if (type != NULL)
|
|
|
|
|
{
|
|
|
|
|
/* User did "ptype <typename>" */
|
|
|
|
|
printf_filtered ("type = ");
|
|
|
|
|
type_print (type, "", gdb_stdout, 1);
|
|
|
|
|
printf_filtered ("\n");
|
|
|
|
|
do_cleanups (old_chain);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* User did "ptype <symbolname>" */
|
|
|
|
|
do_cleanups (old_chain);
|
|
|
|
|
whatis_exp (typename, 1);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Print integral scalar data VAL, of type TYPE, onto stdio stream STREAM.
|
|
|
|
|
Used to print data from type structures in a specified type. For example,
|
|
|
|
|
array bounds may be characters or booleans in some languages, and this
|
|
|
|
|
allows the ranges to be printed in their "natural" form rather than as
|
|
|
|
|
decimal integer values.
|
|
|
|
|
|
|
|
|
|
FIXME: This is here simply because only the type printing routines
|
|
|
|
|
currently use it, and it wasn't clear if it really belonged somewhere
|
|
|
|
|
else (like printcmd.c). There are a lot of other gdb routines that do
|
|
|
|
|
something similar, but they are generally concerned with printing values
|
|
|
|
|
that come from the inferior in target byte order and target size. */
|
|
|
|
|
|
|
|
|
|
void
|
2000-07-30 03:48:28 +02:00
|
|
|
|
print_type_scalar (struct type *type, LONGEST val, struct ui_file *stream)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
{
|
|
|
|
|
unsigned int i;
|
|
|
|
|
unsigned len;
|
|
|
|
|
|
|
|
|
|
CHECK_TYPEDEF (type);
|
|
|
|
|
|
|
|
|
|
switch (TYPE_CODE (type))
|
|
|
|
|
{
|
|
|
|
|
|
|
|
|
|
case TYPE_CODE_ENUM:
|
|
|
|
|
len = TYPE_NFIELDS (type);
|
|
|
|
|
for (i = 0; i < len; i++)
|
|
|
|
|
{
|
|
|
|
|
if (TYPE_FIELD_BITPOS (type, i) == val)
|
|
|
|
|
{
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
if (i < len)
|
|
|
|
|
{
|
|
|
|
|
fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
print_longest (stream, 'd', 0, val);
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case TYPE_CODE_INT:
|
|
|
|
|
print_longest (stream, TYPE_UNSIGNED (type) ? 'u' : 'd', 0, val);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case TYPE_CODE_CHAR:
|
|
|
|
|
LA_PRINT_CHAR ((unsigned char) val, stream);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case TYPE_CODE_BOOL:
|
|
|
|
|
fprintf_filtered (stream, val ? "TRUE" : "FALSE");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case TYPE_CODE_RANGE:
|
|
|
|
|
print_type_scalar (TYPE_TARGET_TYPE (type), val, stream);
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
case TYPE_CODE_UNDEF:
|
|
|
|
|
case TYPE_CODE_PTR:
|
|
|
|
|
case TYPE_CODE_ARRAY:
|
|
|
|
|
case TYPE_CODE_STRUCT:
|
|
|
|
|
case TYPE_CODE_UNION:
|
|
|
|
|
case TYPE_CODE_FUNC:
|
|
|
|
|
case TYPE_CODE_FLT:
|
|
|
|
|
case TYPE_CODE_VOID:
|
|
|
|
|
case TYPE_CODE_SET:
|
|
|
|
|
case TYPE_CODE_STRING:
|
|
|
|
|
case TYPE_CODE_ERROR:
|
|
|
|
|
case TYPE_CODE_MEMBER:
|
|
|
|
|
case TYPE_CODE_METHOD:
|
|
|
|
|
case TYPE_CODE_REF:
|
|
|
|
|
error ("internal error: unhandled type in print_type_scalar");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
error ("Invalid type code in symbol table.");
|
|
|
|
|
}
|
|
|
|
|
gdb_flush (stream);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Dump details of a type specified either directly or indirectly.
|
|
|
|
|
Uses the same sort of type lookup mechanism as ptype_command()
|
|
|
|
|
and whatis_command(). */
|
|
|
|
|
|
|
|
|
|
void
|
2000-07-30 03:48:28 +02:00
|
|
|
|
maintenance_print_type (char *typename, int from_tty)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
{
|
2001-11-10 22:34:56 +01:00
|
|
|
|
struct value *val;
|
1999-04-16 03:35:26 +02:00
|
|
|
|
register struct type *type;
|
|
|
|
|
register struct cleanup *old_chain;
|
|
|
|
|
struct expression *expr;
|
|
|
|
|
|
|
|
|
|
if (typename != NULL)
|
1999-07-07 22:19:36 +02:00
|
|
|
|
{
|
|
|
|
|
expr = parse_expression (typename);
|
2000-04-26 14:41:48 +02:00
|
|
|
|
old_chain = make_cleanup (free_current_contents, &expr);
|
1999-07-07 22:19:36 +02:00
|
|
|
|
if (expr->elts[0].opcode == OP_TYPE)
|
|
|
|
|
{
|
|
|
|
|
/* The user expression names a type directly, just use that type. */
|
|
|
|
|
type = expr->elts[1].type;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* The user expression may name a type indirectly by naming an
|
|
|
|
|
object of that type. Find that indirectly named type. */
|
|
|
|
|
val = evaluate_type (expr);
|
|
|
|
|
type = VALUE_TYPE (val);
|
|
|
|
|
}
|
|
|
|
|
if (type != NULL)
|
|
|
|
|
{
|
|
|
|
|
recursive_dump_type (type, 0);
|
|
|
|
|
}
|
|
|
|
|
do_cleanups (old_chain);
|
|
|
|
|
}
|
1999-04-16 03:35:26 +02:00
|
|
|
|
}
|
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
|
1999-04-16 03:35:26 +02:00
|
|
|
|
void
|
2000-07-30 03:48:28 +02:00
|
|
|
|
_initialize_typeprint (void)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
{
|
|
|
|
|
|
|
|
|
|
add_com ("ptype", class_vars, ptype_command,
|
|
|
|
|
"Print definition of type TYPE.\n\
|
|
|
|
|
Argument may be a type name defined by typedef, or \"struct STRUCT-TAG\"\n\
|
|
|
|
|
or \"class CLASS-NAME\" or \"union UNION-TAG\" or \"enum ENUM-TAG\".\n\
|
|
|
|
|
The selected stack frame's lexical context is used to look up the name.");
|
|
|
|
|
|
|
|
|
|
add_com ("whatis", class_vars, whatis_command,
|
|
|
|
|
"Print data type of expression EXP.");
|
|
|
|
|
|
|
|
|
|
}
|