529 lines
16 KiB
C++
529 lines
16 KiB
C++
// new abi support -*- C++ -*-
|
|
|
|
// Copyright (C) 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
|
|
//
|
|
// This file is part of GCC.
|
|
//
|
|
// GCC 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.
|
|
//
|
|
// GCC 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 GCC; 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
|
|
|
|
#include <stddef.h>
|
|
|
|
#ifdef __cplusplus
|
|
namespace __cxxabiv1
|
|
{
|
|
extern "C"
|
|
{
|
|
#endif
|
|
|
|
// Allocate array.
|
|
void*
|
|
__cxa_vec_new(size_t __element_count, size_t __element_size,
|
|
size_t __padding_size, void (*__constructor) (void*),
|
|
void (*__destructor) (void*));
|
|
|
|
void*
|
|
__cxa_vec_new2(size_t __element_count, size_t __element_size,
|
|
size_t __padding_size, void (*__constructor) (void*),
|
|
void (*__destructor) (void*), void *(*__alloc) (size_t),
|
|
void (*__dealloc) (void*));
|
|
|
|
void*
|
|
__cxa_vec_new3(size_t __element_count, size_t __element_size,
|
|
size_t __padding_size, void (*__constructor) (void*),
|
|
void (*__destructor) (void*), void *(*__alloc) (size_t),
|
|
void (*__dealloc) (void*, size_t));
|
|
|
|
// Construct array.
|
|
void
|
|
__cxa_vec_ctor(void* __array_address, size_t __element_count,
|
|
size_t __element_size, void (*__constructor) (void*),
|
|
void (*__destructor) (void*));
|
|
|
|
void
|
|
__cxa_vec_cctor(void* dest_array, void* src_array, size_t element_count,
|
|
size_t element_size, void (*constructor) (void*, void*),
|
|
void (*destructor) (void*));
|
|
|
|
// Destruct array.
|
|
void
|
|
__cxa_vec_dtor(void* __array_address, size_t __element_count,
|
|
size_t __element_size, void (*__destructor) (void*));
|
|
|
|
void
|
|
__cxa_vec_cleanup(void* __array_address, size_t __element_count,
|
|
size_t __element_size, void (*__destructor) (void*));
|
|
|
|
// Destruct and release array.
|
|
void
|
|
__cxa_vec_delete(void* __array_address, size_t __element_size,
|
|
size_t __padding_size, void (*__destructor) (void*));
|
|
|
|
void
|
|
__cxa_vec_delete2(void* __array_address, size_t __element_size,
|
|
size_t __padding_size, void (*__destructor) (void*),
|
|
void (*__dealloc) (void*));
|
|
|
|
void
|
|
__cxa_vec_delete3(void* __array_address, size_t __element_size,
|
|
size_t __padding_size, void (*__destructor) (void*),
|
|
void (*__dealloc) (void*, size_t));
|
|
|
|
// The ABI requires a 64-bit type.
|
|
__extension__ typedef int __guard __attribute__((mode (__DI__)));
|
|
|
|
int
|
|
__cxa_guard_acquire(__guard*);
|
|
|
|
void
|
|
__cxa_guard_release(__guard*);
|
|
|
|
void
|
|
__cxa_guard_abort(__guard*);
|
|
|
|
// Pure virtual functions.
|
|
void
|
|
__cxa_pure_virtual(void);
|
|
|
|
// Exception handling.
|
|
void
|
|
__cxa_bad_cast();
|
|
|
|
void
|
|
__cxa_bad_typeid();
|
|
|
|
// DSO destruction.
|
|
int
|
|
__cxa_atexit(void (*)(void*), void*, void*);
|
|
|
|
int
|
|
__cxa_finalize(void*);
|
|
|
|
// Demangling routines.
|
|
char*
|
|
__cxa_demangle(const char* __mangled_name, char* __output_buffer,
|
|
size_t* __length, int* __status);
|
|
#ifdef __cplusplus
|
|
}
|
|
} // namespace __cxxabiv1
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
|
|
#include <typeinfo>
|
|
|
|
namespace __cxxabiv1
|
|
{
|
|
// Type information for int, float etc.
|
|
class __fundamental_type_info : public std::type_info
|
|
{
|
|
public:
|
|
explicit
|
|
__fundamental_type_info(const char* __n) : std::type_info(__n) { }
|
|
|
|
virtual
|
|
~__fundamental_type_info();
|
|
};
|
|
|
|
// Type information for array objects.
|
|
class __array_type_info : public std::type_info
|
|
{
|
|
public:
|
|
explicit
|
|
__array_type_info(const char* __n) : std::type_info(__n) { }
|
|
|
|
virtual
|
|
~__array_type_info();
|
|
};
|
|
|
|
// Type information for functions (both member and non-member).
|
|
class __function_type_info : public std::type_info
|
|
{
|
|
public:
|
|
explicit
|
|
__function_type_info(const char* __n) : std::type_info(__n) { }
|
|
|
|
virtual
|
|
~__function_type_info();
|
|
|
|
protected:
|
|
// Implementation defined member function.
|
|
virtual bool
|
|
__is_function_p() const;
|
|
};
|
|
|
|
// Type information for enumerations.
|
|
class __enum_type_info : public std::type_info
|
|
{
|
|
public:
|
|
explicit
|
|
__enum_type_info(const char* __n) : std::type_info(__n) { }
|
|
|
|
virtual
|
|
~__enum_type_info();
|
|
};
|
|
|
|
// Common type information for simple pointers and pointers to member.
|
|
class __pbase_type_info : public std::type_info
|
|
{
|
|
public:
|
|
unsigned int __flags; // Qualification of the target object.
|
|
const std::type_info* __pointee; // Type of pointed to object.
|
|
|
|
explicit
|
|
__pbase_type_info(const char* __n, int __quals,
|
|
const std::type_info* __type)
|
|
: std::type_info(__n), __flags(__quals), __pointee(__type)
|
|
{ }
|
|
|
|
virtual
|
|
~__pbase_type_info();
|
|
|
|
// Implementation defined type.
|
|
enum __masks
|
|
{
|
|
__const_mask = 0x1,
|
|
__volatile_mask = 0x2,
|
|
__restrict_mask = 0x4,
|
|
__incomplete_mask = 0x8,
|
|
__incomplete_class_mask = 0x10
|
|
};
|
|
|
|
protected:
|
|
__pbase_type_info(const __pbase_type_info&);
|
|
|
|
__pbase_type_info&
|
|
operator=(const __pbase_type_info&);
|
|
|
|
// Implementation defined member functions.
|
|
virtual bool
|
|
__do_catch(const std::type_info* __thr_type, void** __thr_obj,
|
|
unsigned int __outer) const;
|
|
|
|
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
|
|
{
|
|
public:
|
|
explicit
|
|
__pointer_type_info(const char* __n, int __quals,
|
|
const std::type_info* __type)
|
|
: __pbase_type_info (__n, __quals, __type) { }
|
|
|
|
|
|
virtual
|
|
~__pointer_type_info();
|
|
|
|
protected:
|
|
// Implementation defined member functions.
|
|
virtual bool
|
|
__is_pointer_p() const;
|
|
|
|
virtual bool
|
|
__pointer_catch(const __pbase_type_info* __thr_type, void** __thr_obj,
|
|
unsigned __outer) const;
|
|
};
|
|
|
|
class __class_type_info;
|
|
|
|
// Type information for a pointer to member variable.
|
|
class __pointer_to_member_type_info : public __pbase_type_info
|
|
{
|
|
public:
|
|
__class_type_info* __context; // Class of the member.
|
|
|
|
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) { }
|
|
|
|
virtual
|
|
~__pointer_to_member_type_info();
|
|
|
|
protected:
|
|
__pointer_to_member_type_info(const __pointer_to_member_type_info&);
|
|
|
|
__pointer_to_member_type_info&
|
|
operator=(const __pointer_to_member_type_info&);
|
|
|
|
// Implementation defined member function.
|
|
virtual bool
|
|
__pointer_catch(const __pbase_type_info* __thr_type, void** __thr_obj,
|
|
unsigned __outer) const;
|
|
};
|
|
|
|
// Helper class for __vmi_class_type.
|
|
class __base_class_type_info
|
|
{
|
|
public:
|
|
const __class_type_info* __base_type; // Base class type.
|
|
long __offset_flags; // Offset and info.
|
|
|
|
enum __offset_flags_masks
|
|
{
|
|
__virtual_mask = 0x1,
|
|
__public_mask = 0x2,
|
|
__hwm_bit = 2,
|
|
__offset_shift = 8 // Bits to shift offset.
|
|
};
|
|
|
|
// Implementation defined member functions.
|
|
bool
|
|
__is_virtual_p() const
|
|
{ return __offset_flags & __virtual_mask; }
|
|
|
|
bool
|
|
__is_public_p() const
|
|
{ return __offset_flags & __public_mask; }
|
|
|
|
ptrdiff_t
|
|
__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_t>(__offset_flags) >> __offset_shift;
|
|
}
|
|
};
|
|
|
|
// Type information for a class.
|
|
class __class_type_info : public std::type_info
|
|
{
|
|
public:
|
|
explicit
|
|
__class_type_info (const char *__n) : type_info(__n) { }
|
|
|
|
virtual
|
|
~__class_type_info ();
|
|
|
|
// Implementation defined types.
|
|
// The type 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
|
|
{
|
|
// We have no idea.
|
|
__unknown = 0,
|
|
|
|
// Not contained within us (in some circumstances this might
|
|
// mean not contained publicly)
|
|
__not_contained,
|
|
|
|
// Contained ambiguously.
|
|
__contained_ambig,
|
|
|
|
// Via a virtual path.
|
|
__contained_virtual_mask = __base_class_type_info::__virtual_mask,
|
|
|
|
// Via a public path.
|
|
__contained_public_mask = __base_class_type_info::__public_mask,
|
|
|
|
// Contained within us.
|
|
__contained_mask = 1 << __base_class_type_info::__hwm_bit,
|
|
|
|
__contained_private = __contained_mask,
|
|
__contained_public = __contained_mask | __contained_public_mask
|
|
};
|
|
|
|
struct __upcast_result;
|
|
struct __dyncast_result;
|
|
|
|
protected:
|
|
// Implementation defined member functions.
|
|
virtual bool
|
|
__do_upcast(const __class_type_info* __dst_type, void**__obj_ptr) const;
|
|
|
|
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;
|
|
|
|
// 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_t __src2dst, const void* __obj_ptr,
|
|
const __class_type_info* __src_type,
|
|
const void* __src_ptr) const;
|
|
|
|
// Helper for dynamic cast. 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_t __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;
|
|
|
|
// 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_t __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
|
|
{
|
|
public:
|
|
const __class_type_info* __base_type;
|
|
|
|
explicit
|
|
__si_class_type_info(const char *__n, const __class_type_info *__base)
|
|
: __class_type_info(__n), __base_type(__base) { }
|
|
|
|
virtual
|
|
~__si_class_type_info();
|
|
|
|
protected:
|
|
__si_class_type_info(const __si_class_type_info&);
|
|
|
|
__si_class_type_info&
|
|
operator=(const __si_class_type_info&);
|
|
|
|
// Implementation defined member functions.
|
|
virtual bool
|
|
__do_dyncast(ptrdiff_t __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_t __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
|
|
{
|
|
public:
|
|
unsigned int __flags; // Details about the class hierarchy.
|
|
unsigned int __base_count; // Dumber of direct 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.
|
|
__base_class_type_info __base_info[1]; // Array of bases.
|
|
|
|
explicit
|
|
__vmi_class_type_info(const char* __n, int ___flags)
|
|
: __class_type_info(__n), __flags(___flags), __base_count(0) { }
|
|
|
|
virtual
|
|
~__vmi_class_type_info();
|
|
|
|
// Implementation defined types.
|
|
enum __flags_masks
|
|
{
|
|
__non_diamond_repeat_mask = 0x1, // Distinct instance of repeated base.
|
|
__diamond_shaped_mask = 0x2, // Diamond shaped multiple inheritance.
|
|
__flags_unknown_mask = 0x10
|
|
};
|
|
|
|
protected:
|
|
// Implementation defined member functions.
|
|
virtual bool
|
|
__do_dyncast(ptrdiff_t __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_t __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.
|
|
// src2dst has the following possible values
|
|
// >-1: 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
|
|
extern "C" void*
|
|
__dynamic_cast(const void* __src_ptr, // Starting object.
|
|
const __class_type_info* __src_type, // Static type of object.
|
|
const __class_type_info* __dst_type, // Desired target type.
|
|
ptrdiff_t __src2dst); // How src and dst are related.
|
|
|
|
|
|
// 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;
|
|
|
|
#endif // __cplusplus
|
|
|
|
#endif // __CXXABI_H
|