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// new abi support -*- C++ -*-
// Copyright (C) 2000
// Free Software Foundation, Inc.
// Written by Nathan Sidwell, Codesourcery LLC, <nathan@codesourcery.com>
//
// 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.
#if defined(__GXX_ABI_VERSION) && __GXX_ABI_VERSION >= 100
#include <cxxabi.h>
#include <new>
#include <exception>
// Exception handling hook, to mark current exception as not caught --
// generally because we're about to rethrow it after some cleanup.
extern "C" void __uncatch_exception (void);
namespace __cxxabiv1
{
/* allocate and construct array */
extern "C++" void *
__cxa_vec_new (size_t element_count,
size_t element_size,
size_t padding_size,
void (*constructor) (void *),
void (*destructor) (void *))
{
size_t size = element_count * element_size + padding_size;
char *base = static_cast <char *> (operator new[] (size));
if (padding_size)
{
base += padding_size;
reinterpret_cast <size_t *> (base)[-1] = element_count;
}
try
{
__cxa_vec_ctor (base, element_count, element_size,
constructor, destructor);
}
catch (...)
{
// operator delete [] cannot throw, so no need to protect it
operator delete[] (base - padding_size);
throw;
}
return base;
}
/* construct array */
extern "C++" void
__cxa_vec_ctor (void *array_address,
size_t element_count,
size_t element_size,
void (*constructor) (void *),
void (*destructor) (void *))
{
size_t ix = 0;
char *ptr = static_cast <char *> (array_address);
try
{
if (constructor)
for (; ix != element_count; ix++, ptr += element_size)
constructor (ptr);
}
catch (...)
{
__uncatch_exception ();
__cxa_vec_dtor (array_address, ix, element_size, destructor);
throw;
}
}
/* destruct array */
extern "C++" void
__cxa_vec_dtor (void *array_address,
size_t element_count,
size_t element_size,
void (*destructor) (void *))
{
if (destructor)
{
char *ptr = static_cast <char *> (array_address);
size_t ix = element_count;
bool unwinding = std::uncaught_exception ();
ptr += element_count * element_size;
try
{
while (ix--)
{
ptr -= element_size;
destructor (ptr);
}
}
catch (...)
{
if (unwinding)
// [except.ctor]/3 If a destructor called during stack unwinding
// exists with an exception, terminate is called.
std::terminate ();
__uncatch_exception ();
__cxa_vec_dtor (array_address, ix, element_size, destructor);
throw;
}
}
}
/* destruct and release array */
extern "C++" void
__cxa_vec_delete (void *array_address,
size_t element_size,
size_t padding_size,
void (*destructor) (void *))
{
char *base = static_cast <char *> (array_address);
if (padding_size)
{
size_t element_count = reinterpret_cast <size_t *> (base)[-1];
base -= padding_size;
try
{
__cxa_vec_dtor (array_address, element_count, element_size,
destructor);
}
catch (...)
{
// operator delete [] cannot throw, so no need to protect it
operator delete[] (base);
throw;
}
}
operator delete[] (base);
}
} // namespace __cxxabiv1
#endif // defined(__GXX_ABI_VERSION) && __GXX_ABI_VERSION >= 100
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