// New abi Support -*- C++ -*-
-// Copyright (C) 2000, 2001, 2003 Free Software Foundation, Inc.
+// Copyright (C) 2000-2023 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)
+// the Free Software Foundation; either version 3, or (at your option)
// any later version.
// GCC is distributed in the hope that it will be useful,
// 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.
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
-// 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.
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
// Written by Nathan Sidwell, Codesourcery LLC, <nathan@codesourcery.com>
#include <cxxabi.h>
#include <new>
#include <exception>
-#include <exception_defines.h>
+#include <bits/exception_defines.h>
#include "unwind-cxx.h"
namespace __cxxabiv1
{
struct uncatch_exception
{
- uncatch_exception ();
+ uncatch_exception();
~uncatch_exception () { __cxa_begin_catch (&p->unwindHeader); }
- __cxa_exception *p;
+ __cxa_exception* p;
+
+ private:
+ uncatch_exception&
+ operator=(const uncatch_exception&);
+
+ uncatch_exception(const uncatch_exception&);
};
- uncatch_exception::uncatch_exception ()
+ uncatch_exception::uncatch_exception() : p(0)
{
__cxa_eh_globals *globals = __cxa_get_globals_fast ();
globals->caughtExceptions = p->nextException;
globals->uncaughtExceptions += 1;
}
+
+ // Compute the total size with overflow checking.
+ std::size_t compute_size(std::size_t element_count,
+ std::size_t element_size,
+ std::size_t padding_size)
+ {
+ if (element_size && element_count > std::size_t(-1) / element_size)
+ _GLIBCXX_THROW_OR_ABORT(std::bad_alloc());
+ std::size_t size = element_count * element_size;
+ if (size + padding_size < size)
+ _GLIBCXX_THROW_OR_ABORT(std::bad_alloc());
+ return size + padding_size;
+ }
}
// Allocate and construct array.
__cxa_vec_new(std::size_t element_count,
std::size_t element_size,
std::size_t padding_size,
- void (*constructor) (void *),
- void (*destructor) (void *))
+ __cxa_cdtor_type constructor,
+ __cxa_cdtor_type destructor)
{
return __cxa_vec_new2(element_count, element_size, padding_size,
constructor, destructor,
__cxa_vec_new2(std::size_t element_count,
std::size_t element_size,
std::size_t padding_size,
- void (*constructor) (void *),
- void (*destructor) (void *),
+ __cxa_cdtor_type constructor,
+ __cxa_cdtor_type destructor,
void *(*alloc) (std::size_t),
void (*dealloc) (void *))
{
- std::size_t size = element_count * element_size + padding_size;
+ std::size_t size
+ = compute_size(element_count, element_size, padding_size);
char *base = static_cast <char *> (alloc (size));
if (!base)
return base;
{
base += padding_size;
reinterpret_cast <std::size_t *> (base)[-1] = element_count;
+#ifdef _GLIBCXX_ELTSIZE_IN_COOKIE
+ reinterpret_cast <std::size_t *> (base)[-2] = element_size;
+#endif
}
- try
+ __try
{
__cxa_vec_ctor(base, element_count, element_size,
constructor, destructor);
}
- catch (...)
+ __catch(...)
{
{
uncatch_exception ue;
- dealloc(base - padding_size);
+ // Core issue 901 will probably be resolved such that a
+ // deleted operator delete means not freeing memory here.
+ if (dealloc)
+ dealloc(base - padding_size);
}
__throw_exception_again;
}
__cxa_vec_new3(std::size_t element_count,
std::size_t element_size,
std::size_t padding_size,
- void (*constructor) (void *),
- void (*destructor) (void *),
+ __cxa_cdtor_type constructor,
+ __cxa_cdtor_type destructor,
void *(*alloc) (std::size_t),
void (*dealloc) (void *, std::size_t))
{
- std::size_t size = element_count * element_size + padding_size;
+ std::size_t size
+ = compute_size(element_count, element_size, padding_size);
char *base = static_cast<char *>(alloc (size));
if (!base)
return base;
{
base += padding_size;
reinterpret_cast<std::size_t *>(base)[-1] = element_count;
+#ifdef _GLIBCXX_ELTSIZE_IN_COOKIE
+ reinterpret_cast <std::size_t *> (base)[-2] = element_size;
+#endif
}
- try
+ __try
{
__cxa_vec_ctor(base, element_count, element_size,
constructor, destructor);
}
- catch (...)
+ __catch(...)
{
{
uncatch_exception ue;
- dealloc(base - padding_size, size);
+ if (dealloc)
+ dealloc(base - padding_size, size);
}
__throw_exception_again;
}
}
// Construct array.
- extern "C" void
+ extern "C" __cxa_vec_ctor_return_type
__cxa_vec_ctor(void *array_address,
std::size_t element_count,
std::size_t element_size,
- void (*constructor) (void *),
- void (*destructor) (void *))
+ __cxa_cdtor_type constructor,
+ __cxa_cdtor_type destructor)
{
std::size_t ix = 0;
char *ptr = static_cast<char *>(array_address);
- try
+ __try
{
if (constructor)
for (; ix != element_count; ix++, ptr += element_size)
constructor(ptr);
}
- catch (...)
+ __catch(...)
{
{
uncatch_exception ue;
}
__throw_exception_again;
}
+ _GLIBCXX_CXA_VEC_CTOR_RETURN (array_address);
}
// Construct an array by copying.
- extern "C" void
+ extern "C" __cxa_vec_ctor_return_type
__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 *))
+ __cxa_cdtor_return_type (*constructor) (void *, void *),
+ __cxa_cdtor_type destructor)
{
std::size_t ix = 0;
char *dest_ptr = static_cast<char *>(dest_array);
char *src_ptr = static_cast<char *>(src_array);
- try
+ __try
{
if (constructor)
for (; ix != element_count;
ix++, src_ptr += element_size, dest_ptr += element_size)
constructor(dest_ptr, src_ptr);
}
- catch (...)
+ __catch(...)
{
{
uncatch_exception ue;
}
__throw_exception_again;
}
+ _GLIBCXX_CXA_VEC_CTOR_RETURN (dest_array);
}
// Destruct array.
__cxa_vec_dtor(void *array_address,
std::size_t element_count,
std::size_t element_size,
- void (*destructor) (void *))
+ __cxa_cdtor_type destructor)
{
if (destructor)
{
ptr += element_count * element_size;
- try
+ __try
{
while (ix--)
{
destructor(ptr);
}
}
- catch (...)
+ __catch(...)
{
{
uncatch_exception ue;
__cxa_vec_cleanup(void *array_address,
std::size_t element_count,
std::size_t element_size,
- void (*destructor) (void *))
+ __cxa_cdtor_type destructor) throw()
{
if (destructor)
{
ptr += element_count * element_size;
- try
+ __try
{
while (ix--)
{
destructor(ptr);
}
}
- catch (...)
+ __catch(...)
{
std::terminate();
}
__cxa_vec_delete(void *array_address,
std::size_t element_size,
std::size_t padding_size,
- void (*destructor) (void *))
+ __cxa_cdtor_type destructor)
{
__cxa_vec_delete2(array_address, element_size, padding_size,
destructor,
__cxa_vec_delete2(void *array_address,
std::size_t element_size,
std::size_t padding_size,
- void (*destructor) (void *),
+ __cxa_cdtor_type destructor,
void (*dealloc) (void *))
{
if (!array_address)
{
std::size_t element_count = reinterpret_cast<std::size_t *>(base)[-1];
base -= padding_size;
- try
+ __try
{
__cxa_vec_dtor(array_address, element_count, element_size,
destructor);
}
- catch (...)
+ __catch(...)
{
{
uncatch_exception ue;
__cxa_vec_delete3(void *array_address,
std::size_t element_size,
std::size_t padding_size,
- void (*destructor) (void *),
+ __cxa_cdtor_type destructor,
void (*dealloc) (void *, std::size_t))
{
if (!array_address)
std::size_t element_count = reinterpret_cast<std::size_t *> (base)[-1];
base -= padding_size;
size = element_count * element_size + padding_size;
- try
+ __try
{
__cxa_vec_dtor(array_address, element_count, element_size,
destructor);
}
- catch (...)
+ __catch(...)
{
{
uncatch_exception ue;
}
} // namespace __cxxabiv1
+#if defined(__arm__) && defined(__ARM_EABI__)
+
+// The ARM C++ ABI requires that the library provide these additional
+// helper functions. There are placed in this file, despite being
+// architecture-specifier, so that the compiler can inline the __cxa
+// functions into these functions as appropriate.
+
+namespace __aeabiv1
+{
+ extern "C" void *
+ __aeabi_vec_ctor_nocookie_nodtor (void *array_address,
+ abi::__cxa_cdtor_type constructor,
+ std::size_t element_size,
+ std::size_t element_count)
+ {
+ return abi::__cxa_vec_ctor (array_address, element_count, element_size,
+ constructor, /*destructor=*/NULL);
+ }
+
+ extern "C" void *
+ __aeabi_vec_ctor_cookie_nodtor (void *array_address,
+ abi::__cxa_cdtor_type constructor,
+ std::size_t element_size,
+ std::size_t element_count)
+ {
+ if (array_address == NULL)
+ return NULL;
+
+ array_address = reinterpret_cast<std::size_t *>(array_address) + 2;
+ reinterpret_cast<std::size_t *>(array_address)[-2] = element_size;
+ reinterpret_cast<std::size_t *>(array_address)[-1] = element_count;
+ return abi::__cxa_vec_ctor (array_address,
+ element_count, element_size,
+ constructor, /*destructor=*/NULL);
+ }
+
+ extern "C" void *
+ __aeabi_vec_cctor_nocookie_nodtor (void *dest_array,
+ void *src_array,
+ std::size_t element_size,
+ std::size_t element_count,
+ void *(*constructor) (void *, void *))
+ {
+ return abi::__cxa_vec_cctor (dest_array, src_array,
+ element_count, element_size,
+ constructor, NULL);
+ }
+
+ extern "C" void *
+ __aeabi_vec_new_cookie_noctor (std::size_t element_size,
+ std::size_t element_count)
+ {
+ return abi::__cxa_vec_new(element_count, element_size,
+ 2 * sizeof (std::size_t),
+ /*constructor=*/NULL, /*destructor=*/NULL);
+ }
+
+ extern "C" void *
+ __aeabi_vec_new_nocookie (std::size_t element_size,
+ std::size_t element_count,
+ abi::__cxa_cdtor_type constructor)
+ {
+ return abi::__cxa_vec_new (element_count, element_size, 0, constructor,
+ NULL);
+ }
+
+ extern "C" void *
+ __aeabi_vec_new_cookie_nodtor (std::size_t element_size,
+ std::size_t element_count,
+ abi::__cxa_cdtor_type constructor)
+ {
+ return abi::__cxa_vec_new(element_count, element_size,
+ 2 * sizeof (std::size_t),
+ constructor, NULL);
+ }
+
+ extern "C" void *
+ __aeabi_vec_new_cookie(std::size_t element_size,
+ std::size_t element_count,
+ abi::__cxa_cdtor_type constructor,
+ abi::__cxa_cdtor_type destructor)
+ {
+ return abi::__cxa_vec_new (element_count, element_size,
+ 2 * sizeof (std::size_t),
+ constructor, destructor);
+ }
+
+
+ extern "C" void *
+ __aeabi_vec_dtor (void *array_address,
+ abi::__cxa_cdtor_type destructor,
+ std::size_t element_size,
+ std::size_t element_count)
+ {
+ abi::__cxa_vec_dtor (array_address, element_count, element_size,
+ destructor);
+ return reinterpret_cast<std::size_t*> (array_address) - 2;
+ }
+
+ extern "C" void *
+ __aeabi_vec_dtor_cookie (void *array_address,
+ abi::__cxa_cdtor_type destructor)
+ {
+ if (!array_address)
+ return NULL;
+
+ abi::__cxa_vec_dtor (array_address,
+ reinterpret_cast<std::size_t *>(array_address)[-1],
+ reinterpret_cast<std::size_t *>(array_address)[-2],
+ destructor);
+ return reinterpret_cast<std::size_t*> (array_address) - 2;
+ }
+
+
+ extern "C" void
+ __aeabi_vec_delete (void *array_address,
+ abi::__cxa_cdtor_type destructor)
+ {
+ if (!array_address)
+ return;
+
+ abi::__cxa_vec_delete (array_address,
+ reinterpret_cast<std::size_t *>(array_address)[-2],
+ 2 * sizeof (std::size_t),
+ destructor);
+ }
+
+ extern "C" void
+ __aeabi_vec_delete3 (void *array_address,
+ abi::__cxa_cdtor_type destructor,
+ void (*dealloc) (void *, std::size_t))
+ {
+ if (!array_address)
+ return;
+
+ abi::__cxa_vec_delete3 (array_address,
+ reinterpret_cast<std::size_t *>(array_address)[-2],
+ 2 * sizeof (std::size_t),
+ destructor, dealloc);
+ }
+
+ extern "C" void
+ __aeabi_vec_delete3_nodtor (void *array_address,
+ void (*dealloc) (void *, std::size_t))
+ {
+ if (!array_address)
+ return;
+
+ abi::__cxa_vec_delete3 (array_address,
+ reinterpret_cast<std::size_t *>(array_address)[-2],
+ 2 * sizeof (std::size_t),
+ /*destructor=*/NULL, dealloc);
+ }
+} // namespace __aeabiv1
+
+#endif // defined(__arm__) && defined(__ARM_EABI__)
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