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- // new abi support -*- C++ -*-
-
- // Copyright (C) 2000, 2002 Free Software Foundation, Inc.
- //
- // This file is part of GNU CC.
- //
- // GNU CC 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, or (at your option)
- // any later version.
- //
- // GNU CC 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 GNU CC; see the file COPYING. If not, write to
- // the Free Software Foundation, 59 Temple Place - Suite 330,
- // Boston, MA 02111-1307, USA.
-
- // As a special exception, you may use this file as part of a free software
- // library without restriction. Specifically, if other files instantiate
- // templates or use macros or inline functions from this file, or you compile
- // this file and link it with other files to produce an executable, this
- // file does not by itself cause the resulting executable to be covered by
- // the GNU General Public License. This exception does not however
- // invalidate any other reasons why the executable file might be covered by
- // the GNU General Public License.
-
- // Written by Nathan Sidwell, Codesourcery LLC, <nathan@codesourcery.com>
-
- /* This file declares the new abi entry points into the runtime. It is not
- normally necessary for user programs to include this header, or use the
- entry points directly. However, this header is available should that be
- needed.
-
- Some of the entry points are intended for both C and C++, thus this header
- is includable from both C and C++. Though the C++ specific parts are not
- available in C, naturally enough. */
-
- #ifndef __CXXABI_H
- #define __CXXABI_H 1
-
- #ifdef __cplusplus
-
- // We use the compiler builtins __SIZE_TYPE__ and __PTRDIFF_TYPE__ instead of
- // std::size_t and std::ptrdiff_t respectively. This makes us independent of
- // the conformance level of <cstddef> and whether -fhonor-std was supplied.
- // <cstddef> is not currently available during compiler building anyway.
- // Including <stddef.h> would be wrong, as that would rudely place size_t in
- // the global namespace.
-
- #include <typeinfo>
-
- namespace __cxxabiv1
- {
-
- /* type information for int, float etc */
- class __fundamental_type_info
- : public std::type_info
- {
- public:
- virtual ~__fundamental_type_info ();
- public:
- explicit __fundamental_type_info (const char *__n)
- : std::type_info (__n)
- { }
- };
-
- /* type information for array objects */
- class __array_type_info
- : public std::type_info
- {
- /* abi defined member functions */
- protected:
- virtual ~__array_type_info ();
- public:
- explicit __array_type_info (const char *__n)
- : std::type_info (__n)
- { }
- };
-
- /* type information for functions (both member and non-member) */
- class __function_type_info
- : public std::type_info
- {
- /* abi defined member functions */
- public:
- virtual ~__function_type_info ();
- public:
- explicit __function_type_info (const char *__n)
- : std::type_info (__n)
- { }
-
- /* implementation defined member functions */
- protected:
- virtual bool __is_function_p () const;
- };
-
- /* type information for enumerations */
- class __enum_type_info
- : public std::type_info
- {
- /* abi defined member functions */
- public:
- virtual ~__enum_type_info ();
- public:
- explicit __enum_type_info (const char *__n)
- : std::type_info (__n)
- { }
- };
-
- /* common type information for simple pointers and pointers to member */
- class __pbase_type_info
- : public std::type_info
- {
- /* abi defined member variables */
- public:
- unsigned int __flags; /* qualification of the target object */
- const std::type_info *__pointee; /* type of pointed to object */
-
- /* abi defined member functions */
- public:
- virtual ~__pbase_type_info ();
- public:
- explicit __pbase_type_info (const char *__n,
- int __quals,
- const std::type_info *__type)
- : std::type_info (__n), __flags (__quals), __pointee (__type)
- { }
-
- /* implementation defined types */
- public:
- enum __masks {
- __const_mask = 0x1,
- __volatile_mask = 0x2,
- __restrict_mask = 0x4,
- __incomplete_mask = 0x8,
- __incomplete_class_mask = 0x10
- };
-
- /* implementation defined member functions */
- protected:
- virtual bool __do_catch (const std::type_info *__thr_type,
- void **__thr_obj,
- unsigned __outer) const;
- protected:
- inline virtual bool __pointer_catch (const __pbase_type_info *__thr_type,
- void **__thr_obj,
- unsigned __outer) const;
- };
-
- /* type information for simple pointers */
- class __pointer_type_info
- : public __pbase_type_info
- {
- /* abi defined member functions */
- public:
- virtual ~__pointer_type_info ();
- public:
- explicit __pointer_type_info (const char *__n,
- int __quals,
- const std::type_info *__type)
- : __pbase_type_info (__n, __quals, __type)
- { }
-
- /* implementation defined member functions */
- protected:
- virtual bool __is_pointer_p () const;
-
- protected:
- virtual bool __pointer_catch (const __pbase_type_info *__thr_type,
- void **__thr_obj,
- unsigned __outer) const;
- };
-
- /* type information for a pointer to member variable */
- class __pointer_to_member_type_info
- : public __pbase_type_info
- {
- /* abi defined member variables */
- public:
- __class_type_info *__context; /* class of the member */
-
- /* abi defined member functions */
- public:
- virtual ~__pointer_to_member_type_info ();
- public:
- explicit __pointer_to_member_type_info (const char *__n,
- int __quals,
- const std::type_info *__type,
- __class_type_info *__klass)
- : __pbase_type_info (__n, __quals, __type), __context (__klass)
- { }
-
- /* implementation defined member functions */
- protected:
- virtual bool __pointer_catch (const __pbase_type_info *__thr_type,
- void **__thr_obj,
- unsigned __outer) const;
- };
-
- class __class_type_info;
-
- /* helper class for __vmi_class_type */
- class __base_class_type_info
- {
- /* abi defined member variables */
- public:
- const __class_type_info* __base_type; /* base class type */
- long __offset_flags; /* offset and info */
-
- /* implementation defined types */
- public:
- enum __offset_flags_masks {
- __virtual_mask = 0x1,
- __public_mask = 0x2,
- __hwm_bit = 2,
- __offset_shift = 8 /* bits to shift offset by */
- };
-
- /* implementation defined member functions */
- public:
- bool __is_virtual_p () const
- { return __offset_flags & __virtual_mask; }
- bool __is_public_p () const
- { return __offset_flags & __public_mask; }
- __PTRDIFF_TYPE__ __offset () const
- {
- // This shift, being of a signed type, is implementation defined. GCC
- // implements such shifts as arithmetic, which is what we want.
- return static_cast<__PTRDIFF_TYPE__> (__offset_flags) >> __offset_shift;
- }
- };
-
- /* type information for a class */
- class __class_type_info
- : public std::type_info
- {
- /* abi defined member functions */
- public:
- virtual ~__class_type_info ();
- public:
- explicit __class_type_info (const char *__n)
- : type_info (__n)
- { }
-
- /* implementation defined types */
- public:
- /* sub_kind tells us about how a base object is contained within a derived
- object. We often do this lazily, hence the UNKNOWN value. At other times
- we may use NOT_CONTAINED to mean not publicly contained. */
- enum __sub_kind
- {
- __unknown = 0, /* we have no idea */
- __not_contained, /* not contained within us (in some */
- /* circumstances this might mean not contained */
- /* publicly) */
- __contained_ambig, /* contained ambiguously */
-
- __contained_virtual_mask = __base_class_type_info::__virtual_mask, /* via a virtual path */
- __contained_public_mask = __base_class_type_info::__public_mask, /* via a public path */
- __contained_mask = 1 << __base_class_type_info::__hwm_bit, /* contained within us */
-
- __contained_private = __contained_mask,
- __contained_public = __contained_mask | __contained_public_mask
- };
-
- public:
- struct __upcast_result;
- struct __dyncast_result;
-
- /* implementation defined member functions */
- protected:
- virtual bool __do_upcast (const __class_type_info *__dst_type, void **__obj_ptr) const;
-
- protected:
- virtual bool __do_catch (const type_info *__thr_type, void **__thr_obj,
- unsigned __outer) const;
-
-
- public:
- /* Helper for upcast. See if DST is us, or one of our bases. */
- /* Return false if not found, true if found. */
- virtual bool __do_upcast (const __class_type_info *__dst,
- const void *__obj,
- __upcast_result &__restrict __result) const;
-
- public:
- /* Indicate whether SRC_PTR of type SRC_TYPE is contained publicly within
- OBJ_PTR. OBJ_PTR points to a base object of our type, which is the
- destination type. SRC2DST indicates how SRC objects might be contained
- within this type. If SRC_PTR is one of our SRC_TYPE bases, indicate the
- virtuality. Returns not_contained for non containment or private
- containment. */
- inline __sub_kind __find_public_src (__PTRDIFF_TYPE__ __src2dst,
- const void *__obj_ptr,
- const __class_type_info *__src_type,
- const void *__src_ptr) const;
-
- public:
- /* dynamic cast helper. ACCESS_PATH gives the access from the most derived
- object to this base. DST_TYPE indicates the desired type we want. OBJ_PTR
- points to a base of our type within the complete object. SRC_TYPE
- indicates the static type started from and SRC_PTR points to that base
- within the most derived object. Fill in RESULT with what we find. Return
- true if we have located an ambiguous match. */
- virtual bool __do_dyncast (__PTRDIFF_TYPE__ __src2dst,
- __sub_kind __access_path,
- const __class_type_info *__dst_type,
- const void *__obj_ptr,
- const __class_type_info *__src_type,
- const void *__src_ptr,
- __dyncast_result &__result) const;
- public:
- /* Helper for find_public_subobj. SRC2DST indicates how SRC_TYPE bases are
- inherited by the type started from -- which is not necessarily the
- current type. The current type will be a base of the destination type.
- OBJ_PTR points to the current base. */
- virtual __sub_kind __do_find_public_src (__PTRDIFF_TYPE__ __src2dst,
- const void *__obj_ptr,
- const __class_type_info *__src_type,
- const void *__src_ptr) const;
- };
-
- /* type information for a class with a single non-virtual base */
- class __si_class_type_info
- : public __class_type_info
- {
- /* abi defined member variables */
- public:
- const __class_type_info *__base_type;
-
- /* abi defined member functions */
- public:
- virtual ~__si_class_type_info ();
- public:
- explicit __si_class_type_info (const char *__n,
- const __class_type_info *__base)
- : __class_type_info (__n), __base_type (__base)
- { }
-
- /* implementation defined member functions */
- protected:
- virtual bool __do_dyncast (__PTRDIFF_TYPE__ __src2dst,
- __sub_kind __access_path,
- const __class_type_info *__dst_type,
- const void *__obj_ptr,
- const __class_type_info *__src_type,
- const void *__src_ptr,
- __dyncast_result &__result) const;
- virtual __sub_kind __do_find_public_src (__PTRDIFF_TYPE__ __src2dst,
- const void *__obj_ptr,
- const __class_type_info *__src_type,
- const void *__sub_ptr) const;
- virtual bool __do_upcast (const __class_type_info *__dst,
- const void *__obj,
- __upcast_result &__restrict __result) const;
- };
-
- /* type information for a class with multiple and/or virtual bases */
- class __vmi_class_type_info : public __class_type_info {
- /* abi defined member variables */
- public:
- unsigned int __flags; /* details about the class hierarchy */
- unsigned int __base_count; /* number of direct bases */
- __base_class_type_info __base_info[1]; /* array of bases */
- /* The array of bases uses the trailing array struct hack
- so this class is not constructable with a normal constructor. It is
- internally generated by the compiler. */
-
- /* abi defined member functions */
- public:
- virtual ~__vmi_class_type_info ();
- public:
- explicit __vmi_class_type_info (const char *__n,
- int ___flags)
- : __class_type_info (__n), __flags (___flags), __base_count (0)
- { }
-
- /* implementation defined types */
- public:
- enum __flags_masks {
- __non_diamond_repeat_mask = 0x1, /* distinct instance of repeated base */
- __diamond_shaped_mask = 0x2, /* diamond shaped multiple inheritance */
- non_public_base_mask = 0x4, /* has non-public direct or indirect base */
- public_base_mask = 0x8, /* has public base (direct) */
-
- __flags_unknown_mask = 0x10
- };
-
- /* implementation defined member functions */
- protected:
- virtual bool __do_dyncast (__PTRDIFF_TYPE__ __src2dst,
- __sub_kind __access_path,
- const __class_type_info *__dst_type,
- const void *__obj_ptr,
- const __class_type_info *__src_type,
- const void *__src_ptr,
- __dyncast_result &__result) const;
- virtual __sub_kind __do_find_public_src (__PTRDIFF_TYPE__ __src2dst,
- const void *__obj_ptr,
- const __class_type_info *__src_type,
- const void *__src_ptr) const;
- virtual bool __do_upcast (const __class_type_info *__dst,
- const void *__obj,
- __upcast_result &__restrict __result) const;
- };
-
- /* dynamic cast runtime */
- extern "C"
- void *__dynamic_cast (const void *__src_ptr, /* object started from */
- const __class_type_info *__src_type, /* static type of object */
- const __class_type_info *__dst_type, /* desired target type */
- __PTRDIFF_TYPE__ __src2dst); /* how src and dst are related */
-
- /* src2dst has the following possible values
- >= 0: src_type is a unique public non-virtual base of dst_type
- dst_ptr + src2dst == src_ptr
- -1: unspecified relationship
- -2: src_type is not a public base of dst_type
- -3: src_type is a multiple public non-virtual base of dst_type */
-
- /* array ctor/dtor routines */
-
- /* allocate and construct array */
- extern "C"
- void *__cxa_vec_new (__SIZE_TYPE__ __element_count,
- __SIZE_TYPE__ __element_size,
- __SIZE_TYPE__ __padding_size,
- void (*__constructor) (void *),
- void (*__destructor) (void *));
-
- extern "C"
- void *__cxa_vec_new2 (__SIZE_TYPE__ __element_count,
- __SIZE_TYPE__ __element_size,
- __SIZE_TYPE__ __padding_size,
- void (*__constructor) (void *),
- void (*__destructor) (void *),
- void *(*__alloc) (__SIZE_TYPE__),
- void (*__dealloc) (void *));
-
- extern "C"
- void *__cxa_vec_new3 (__SIZE_TYPE__ __element_count,
- __SIZE_TYPE__ __element_size,
- __SIZE_TYPE__ __padding_size,
- void (*__constructor) (void *),
- void (*__destructor) (void *),
- void *(*__alloc) (__SIZE_TYPE__),
- void (*__dealloc) (void *, __SIZE_TYPE__));
-
- /* construct array */
- extern "C"
- void __cxa_vec_ctor (void *__array_address,
- __SIZE_TYPE__ __element_count,
- __SIZE_TYPE__ __element_size,
- void (*__constructor) (void *),
- void (*__destructor) (void *));
-
- extern "C"
- void __cxa_vec_cctor (void *dest_array,
- void *src_array,
- __SIZE_TYPE__ element_count,
- __SIZE_TYPE__ element_size,
- void (*constructor) (void *, void *),
- void (*destructor) (void *));
-
- /* destruct array */
- extern "C"
- void __cxa_vec_dtor (void *__array_address,
- __SIZE_TYPE__ __element_count,
- __SIZE_TYPE__ __element_size,
- void (*__destructor) (void *));
-
- /* destruct array */
- extern "C"
- void __cxa_vec_cleanup (void *__array_address,
- __SIZE_TYPE__ __element_count,
- __SIZE_TYPE__ __element_size,
- void (*__destructor) (void *));
-
- /* destruct and release array */
- extern "C"
- void __cxa_vec_delete (void *__array_address,
- __SIZE_TYPE__ __element_size,
- __SIZE_TYPE__ __padding_size,
- void (*__destructor) (void *));
-
- extern "C"
- void __cxa_vec_delete2 (void *__array_address,
- __SIZE_TYPE__ __element_size,
- __SIZE_TYPE__ __padding_size,
- void (*__destructor) (void *),
- void (*__dealloc) (void *));
-
- extern "C"
- void __cxa_vec_delete3 (void *__array_address,
- __SIZE_TYPE__ __element_size,
- __SIZE_TYPE__ __padding_size,
- void (*__destructor) (void *),
- void (*__dealloc) (void *, __SIZE_TYPE__));
-
- /* demangling routines */
-
- extern "C"
- char *__cxa_demangle (const char *__mangled_name,
- char *__output_buffer,
- __SIZE_TYPE__ *__length,
- int *__status);
-
- // Returns the type_info for the currently handled exception [15.3/8], or
- // null if there is none.
- extern "C"
- std::type_info *__cxa_current_exception_type ();
-
- } /* namespace __cxxabiv1 */
-
- /* User programs should use the alias `abi'. */
- namespace abi = __cxxabiv1;
-
- #else
- #endif /* __cplusplus */
-
-
- #endif /* __CXXABI_H */
-