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authorJim Blandy <jimb@codesourcery.com>2001-04-27 00:19:09 +0000
committerJim Blandy <jimb@codesourcery.com>2001-04-27 00:19:09 +0000
commit015a42b4cf96cadcb996b6474ab61eca781fdde6 (patch)
tree9c6498c34c193f62714d7cded22a5537ec3be632 /gdb/cp-abi.h
parent20b8570d73f0a4e0e83a44d6aaa639a93a17f3b8 (diff)
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(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).
Diffstat (limited to 'gdb/cp-abi.h')
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diff --git a/gdb/cp-abi.h b/gdb/cp-abi.h
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+/* 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
+