015a42b4cf
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).
131 lines
4.3 KiB
C
131 lines
4.3 KiB
C
/* Abstraction of various C++ ABI's we support, and the info we need
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to get from them.
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Contributed by Daniel Berlin <dberlin@redhat.com>
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Copyright 2001 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or
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modify
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it under the terms of the GNU General Public License as published
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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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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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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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#ifndef CP_ABI_H_
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#define CP_ABI_H_ 1
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/* Kinds of constructors. All these values are guaranteed to be
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non-zero. */
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enum ctor_kinds {
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/* Initialize a complete object, including virtual bases, using
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memory provided by caller. */
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complete_object_ctor = 1,
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/* Initialize a base object of some larger object. */
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base_object_ctor,
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/* An allocating complete-object constructor. */
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complete_object_allocating_ctor
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};
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/* Kinds of destructors. All these values are guaranteed to be
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non-zero. */
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enum dtor_kinds {
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/* A destructor which finalizes the entire object, and then calls
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`delete' on its storage. */
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deleting_dtor = 1,
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/* A destructor which finalizes the entire object, but does not call
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`delete'. */
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complete_object_dtor,
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/* A destructor which finalizes a subobject of some larger object. */
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base_object_dtor
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};
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struct cp_abi_ops
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{
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const char *shortname;
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const char *longname;
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const char *doc;
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/* The functions here that attempt to determine what sort of thing a
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mangled name refers to may well be revised in the future. It
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would certainly be cleaner to carry this information explicitly
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in GDB's data structures than to derive it from the mangled name. */
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/* Return non-zero iff NAME is the mangled name of a constructor.
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Actually, return an `enum ctor_kind' value describing what *kind*
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of constructor it is. */
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enum ctor_kinds (*is_constructor_name) (const char *name);
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/* Return non-zero iff NAME is the mangled name of a destructor.
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Actually, return an `enum dtor_kind' value describing what *kind*
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of destructor it is. */
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enum dtor_kinds (*is_destructor_name) (const char *name);
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/* Return non-zero iff NAME is the mangled name of a vtable. */
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int (*is_vtable_name) (const char *name);
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/* Return non-zero iff NAME is the un-mangled name of an operator,
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perhaps scoped within some class. */
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int (*is_operator_name) (const char *name);
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value_ptr (*virtual_fn_field) (value_ptr * arg1p, struct fn_field * f,
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int j, struct type * type, int offset);
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/* Find the real run-time type of a value using RTTI.
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* V is a pointer to the value.
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* A pointer to the struct type entry of the run-time type
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* is returneed.
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* FULL is a flag that is set only if the value V includes
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* the entire contents of an object of the RTTI type.
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* TOP is the offset to the top of the enclosing object of
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* the real run-time type. This offset may be for the embedded
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* object, or for the enclosing object of V.
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* USING_ENC is the flag that distinguishes the two cases.
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* If it is 1, then the offset is for the enclosing object,
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* otherwise for the embedded object.
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*
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*/
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struct type *(*rtti_type) (value_ptr v, int *full, int *top,
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int *using_enc);
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};
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extern struct cp_abi_ops *cp_abis;
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extern int num_cp_abis;
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extern struct cp_abi_ops current_cp_abi;
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extern enum ctor_kinds is_constructor_name (const char *name);
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extern enum dtor_kinds is_destructor_name (const char *name);
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extern int is_vtable_name (const char *name);
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extern int is_operator_name (const char *name);
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extern value_ptr value_virtual_fn_field (value_ptr * arg1p,
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struct fn_field *f, int j,
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struct type *type, int offset);
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extern struct type *value_rtti_type (value_ptr v, int *full, int *top,
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int *using_enc);
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extern int register_cp_abi (struct cp_abi_ops abi);
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extern int switch_to_cp_abi (const char *short_name);
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#endif
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