(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).

1 files changed, 131 insertions, 0 deletions

diff --git a/gdb/cp-abi.h b/gdb/cp-abi.h
new file mode 100644
index 00000000000..059816a9f7b
--- /dev/null
+++ b/gdb/cp-abi.h
@@ -0,0 +1,131 @@
+/* Abstraction of various C++ ABI's we support, and the info we need
+   to get from them.
+   Contributed by Daniel Berlin <dberlin@redhat.com>
+   Copyright 2001 Free Software Foundation, Inc.
+
+   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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef CP_ABI_H_
+#define CP_ABI_H_ 1
+
+/* Kinds of constructors.  All these values are guaranteed to be
+   non-zero.  */
+enum ctor_kinds {
+
+  /* Initialize a complete object, including virtual bases, using
+     memory provided by caller.  */
+  complete_object_ctor = 1,
+
+  /* Initialize a base object of some larger object.  */
+  base_object_ctor,
+
+  /* An allocating complete-object constructor.  */
+  complete_object_allocating_ctor
+};
+
+
+/* Kinds of destructors.  All these values are guaranteed to be
+   non-zero.  */
+enum dtor_kinds {
+
+  /* A destructor which finalizes the entire object, and then calls
+     `delete' on its storage.  */
+  deleting_dtor = 1,
+
+  /* A destructor which finalizes the entire object, but does not call
+     `delete'.  */
+  complete_object_dtor,
+
+  /* A destructor which finalizes a subobject of some larger object.  */
+  base_object_dtor
+};
+  
+
+struct cp_abi_ops
+{
+  const char *shortname;
+  const char *longname;
+  const char *doc;
+
+  /* The functions here that attempt to determine what sort of thing a
+     mangled name refers to may well be revised in the future.  It
+     would certainly be cleaner to carry this information explicitly
+     in GDB's data structures than to derive it from the mangled name.  */
+
+  /* Return non-zero iff NAME is the mangled name of a constructor.
+     Actually, return an `enum ctor_kind' value describing what *kind*
+     of constructor it is.  */
+  enum ctor_kinds (*is_constructor_name) (const char *name);
+
+  /* Return non-zero iff NAME is the mangled name of a destructor.
+     Actually, return an `enum dtor_kind' value describing what *kind*
+     of destructor it is.  */
+  enum dtor_kinds (*is_destructor_name) (const char *name);
+
+  /* Return non-zero iff NAME is the mangled name of a vtable.  */
+  int (*is_vtable_name) (const char *name);
+
+  /* Return non-zero iff NAME is the un-mangled name of an operator,
+     perhaps scoped within some class.  */
+  int (*is_operator_name) (const char *name);
+
+  value_ptr (*virtual_fn_field) (value_ptr * arg1p, struct fn_field * f,
+				 int j, struct type * type, int offset);
+
+  /* Find the real run-time type of a value using RTTI.
+   * V is a pointer to the value.
+   * A pointer to the struct type entry of the run-time type
+   * is returneed.
+   * FULL is a flag that is set only if the value V includes
+   * the entire contents of an object of the RTTI type.
+   * TOP is the offset to the top of the enclosing object of
+   * the real run-time type.  This offset may be for the embedded
+   * object, or for the enclosing object of V.
+   * USING_ENC is the flag that distinguishes the two cases.
+   * If it is 1, then the offset is for the enclosing object,
+   * otherwise for the embedded object.
+   *
+   */
+
+  struct type *(*rtti_type) (value_ptr v, int *full, int *top,
+			     int *using_enc);
+};
+
+
+extern struct cp_abi_ops *cp_abis;
+
+extern int num_cp_abis;
+
+extern struct cp_abi_ops current_cp_abi;
+
+extern enum ctor_kinds is_constructor_name (const char *name);
+extern enum dtor_kinds is_destructor_name (const char *name);
+extern int is_vtable_name (const char *name);
+extern int is_operator_name (const char *name);
+extern value_ptr value_virtual_fn_field (value_ptr * arg1p,
+					 struct fn_field *f, int j,
+					 struct type *type, int offset);
+extern struct type *value_rtti_type (value_ptr v, int *full, int *top,
+				     int *using_enc);
+extern int register_cp_abi (struct cp_abi_ops abi);
+extern int switch_to_cp_abi (const char *short_name);
+
+#endif
+