mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-17 12:39:51 +08:00
338 lines
8.0 KiB
C++
338 lines
8.0 KiB
C++
// New abi Support -*- C++ -*-
|
|
|
|
// Copyright (C) 2000, 2001 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>
|
|
|
|
#include <cxxabi.h>
|
|
#include <new>
|
|
#include <exception>
|
|
#include <exception_defines.h>
|
|
|
|
#include "unwind-cxx.h"
|
|
|
|
namespace __cxxabiv1
|
|
{
|
|
namespace
|
|
{
|
|
struct uncatch_exception
|
|
{
|
|
uncatch_exception ();
|
|
~uncatch_exception () { __cxa_begin_catch (&p->unwindHeader); }
|
|
|
|
__cxa_exception *p;
|
|
};
|
|
|
|
uncatch_exception::uncatch_exception ()
|
|
{
|
|
__cxa_eh_globals *globals = __cxa_get_globals_fast ();
|
|
|
|
p = globals->caughtExceptions;
|
|
p->handlerCount -= 1;
|
|
globals->caughtExceptions = p->nextException;
|
|
globals->uncaughtExceptions += 1;
|
|
}
|
|
}
|
|
|
|
// Allocate and construct array.
|
|
extern "C" void *
|
|
__cxa_vec_new(std::size_t element_count,
|
|
std::size_t element_size,
|
|
std::size_t padding_size,
|
|
void (*constructor) (void *),
|
|
void (*destructor) (void *))
|
|
{
|
|
return __cxa_vec_new2(element_count, element_size, padding_size,
|
|
constructor, destructor,
|
|
&operator new[], &operator delete []);
|
|
}
|
|
|
|
extern "C" void *
|
|
__cxa_vec_new2(std::size_t element_count,
|
|
std::size_t element_size,
|
|
std::size_t padding_size,
|
|
void (*constructor) (void *),
|
|
void (*destructor) (void *),
|
|
void *(*alloc) (std::size_t),
|
|
void (*dealloc) (void *))
|
|
{
|
|
std::size_t size = element_count * element_size + padding_size;
|
|
char *base = static_cast <char *> (alloc (size));
|
|
|
|
if (padding_size)
|
|
{
|
|
base += padding_size;
|
|
reinterpret_cast <std::size_t *> (base)[-1] = element_count;
|
|
}
|
|
try
|
|
{
|
|
__cxa_vec_ctor(base, element_count, element_size,
|
|
constructor, destructor);
|
|
}
|
|
catch (...)
|
|
{
|
|
{
|
|
uncatch_exception ue;
|
|
dealloc(base - padding_size);
|
|
}
|
|
__throw_exception_again;
|
|
}
|
|
return base;
|
|
}
|
|
|
|
extern "C" void *
|
|
__cxa_vec_new3(std::size_t element_count,
|
|
std::size_t element_size,
|
|
std::size_t padding_size,
|
|
void (*constructor) (void *),
|
|
void (*destructor) (void *),
|
|
void *(*alloc) (std::size_t),
|
|
void (*dealloc) (void *, std::size_t))
|
|
{
|
|
std::size_t size = element_count * element_size + padding_size;
|
|
char *base = static_cast<char *>(alloc (size));
|
|
|
|
if (padding_size)
|
|
{
|
|
base += padding_size;
|
|
reinterpret_cast<std::size_t *>(base)[-1] = element_count;
|
|
}
|
|
try
|
|
{
|
|
__cxa_vec_ctor(base, element_count, element_size,
|
|
constructor, destructor);
|
|
}
|
|
catch (...)
|
|
{
|
|
{
|
|
uncatch_exception ue;
|
|
dealloc(base - padding_size, size);
|
|
}
|
|
__throw_exception_again;
|
|
}
|
|
return base;
|
|
}
|
|
|
|
// Construct array.
|
|
extern "C" void
|
|
__cxa_vec_ctor(void *array_address,
|
|
std::size_t element_count,
|
|
std::size_t element_size,
|
|
void (*constructor) (void *),
|
|
void (*destructor) (void *))
|
|
{
|
|
std::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 ue;
|
|
__cxa_vec_cleanup(array_address, ix, element_size, destructor);
|
|
}
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
|
|
// Construct an array by copying.
|
|
extern "C" void
|
|
__cxa_vec_cctor(void *dest_array,
|
|
void *src_array,
|
|
std::size_t element_count,
|
|
std::size_t element_size,
|
|
void (*constructor) (void *, void *),
|
|
void (*destructor) (void *))
|
|
{
|
|
std::size_t ix = 0;
|
|
char *dest_ptr = static_cast<char *>(dest_array);
|
|
char *src_ptr = static_cast<char *>(src_array);
|
|
|
|
try
|
|
{
|
|
if (constructor)
|
|
for (; ix != element_count;
|
|
ix++, src_ptr += element_size, dest_ptr += element_size)
|
|
constructor(dest_ptr, src_ptr);
|
|
}
|
|
catch (...)
|
|
{
|
|
{
|
|
uncatch_exception ue;
|
|
__cxa_vec_cleanup(dest_array, ix, element_size, destructor);
|
|
}
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
|
|
// Destruct array.
|
|
extern "C" void
|
|
__cxa_vec_dtor(void *array_address,
|
|
std::size_t element_count,
|
|
std::size_t element_size,
|
|
void (*destructor) (void *))
|
|
{
|
|
if (destructor)
|
|
{
|
|
char *ptr = static_cast<char *>(array_address);
|
|
std::size_t ix = element_count;
|
|
|
|
ptr += element_count * element_size;
|
|
|
|
try
|
|
{
|
|
while (ix--)
|
|
{
|
|
ptr -= element_size;
|
|
destructor(ptr);
|
|
}
|
|
}
|
|
catch (...)
|
|
{
|
|
{
|
|
uncatch_exception ue;
|
|
__cxa_vec_cleanup(array_address, ix, element_size, destructor);
|
|
}
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Destruct array as a result of throwing an exception.
|
|
// [except.ctor]/3 If a destructor called during stack unwinding
|
|
// exits with an exception, terminate is called.
|
|
extern "C" void
|
|
__cxa_vec_cleanup(void *array_address,
|
|
std::size_t element_count,
|
|
std::size_t element_size,
|
|
void (*destructor) (void *))
|
|
{
|
|
if (destructor)
|
|
{
|
|
char *ptr = static_cast <char *> (array_address);
|
|
std::size_t ix = element_count;
|
|
|
|
ptr += element_count * element_size;
|
|
|
|
try
|
|
{
|
|
while (ix--)
|
|
{
|
|
ptr -= element_size;
|
|
destructor(ptr);
|
|
}
|
|
}
|
|
catch (...)
|
|
{
|
|
std::terminate();
|
|
}
|
|
}
|
|
}
|
|
|
|
// Destruct and release array.
|
|
extern "C" void
|
|
__cxa_vec_delete(void *array_address,
|
|
std::size_t element_size,
|
|
std::size_t padding_size,
|
|
void (*destructor) (void *))
|
|
{
|
|
__cxa_vec_delete2(array_address, element_size, padding_size,
|
|
destructor,
|
|
&operator delete []);
|
|
}
|
|
|
|
extern "C" void
|
|
__cxa_vec_delete2(void *array_address,
|
|
std::size_t element_size,
|
|
std::size_t padding_size,
|
|
void (*destructor) (void *),
|
|
void (*dealloc) (void *))
|
|
{
|
|
char *base = static_cast<char *>(array_address);
|
|
|
|
if (padding_size)
|
|
{
|
|
std::size_t element_count = reinterpret_cast<std::size_t *>(base)[-1];
|
|
base -= padding_size;
|
|
try
|
|
{
|
|
__cxa_vec_dtor(array_address, element_count, element_size,
|
|
destructor);
|
|
}
|
|
catch (...)
|
|
{
|
|
{
|
|
uncatch_exception ue;
|
|
dealloc(base);
|
|
}
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
dealloc(base);
|
|
}
|
|
|
|
extern "C" void
|
|
__cxa_vec_delete3(void *array_address,
|
|
std::size_t element_size,
|
|
std::size_t padding_size,
|
|
void (*destructor) (void *),
|
|
void (*dealloc) (void *, std::size_t))
|
|
{
|
|
char *base = static_cast <char *> (array_address);
|
|
std::size_t size = 0;
|
|
|
|
if (padding_size)
|
|
{
|
|
std::size_t element_count = reinterpret_cast<std::size_t *> (base)[-1];
|
|
base -= padding_size;
|
|
size = element_count * element_size + padding_size;
|
|
try
|
|
{
|
|
__cxa_vec_dtor(array_address, element_count, element_size,
|
|
destructor);
|
|
}
|
|
catch (...)
|
|
{
|
|
{
|
|
uncatch_exception ue;
|
|
dealloc(base, size);
|
|
}
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
dealloc(base, size);
|
|
}
|
|
} // namespace __cxxabiv1
|
|
|