Subversion Repositories openrisc

/* Copyright (C) 2009, 2011 Free Software Foundation, Inc.

   Contributed by Richard Henderson <rth@redhat.com>.

   This file is part of the GNU Transactional Memory Library (libitm).

   Libitm 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 3 of the License, or

   (at your option) any later version.

   Libitm 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.

   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.

   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/>.  */

#include "libitm_i.h"

using namespace GTM;

/* Mangling the names by hand requires that we know how size_t is handled.

   We've gotten the letter from autoconf, now substitute it into the names.

   Everything below uses X as a placeholder for clarity.  */

#define S1(x,y)                 x##y

#define S(x,y)                  S1(x,y)

#define _ZnwX                   S(_Znw,MANGLE_SIZE_T)

#define _ZnaX                   S(_Zna,MANGLE_SIZE_T)

#define _ZnwXRKSt9nothrow_t     S(S(_Znw,MANGLE_SIZE_T),RKSt9nothrow_t)

#define _ZnaXRKSt9nothrow_t     S(S(_Zna,MANGLE_SIZE_T),RKSt9nothrow_t)

#define _ZGTtnwX                S(_ZGTtnw,MANGLE_SIZE_T)

#define _ZGTtnaX                S(_ZGTtna,MANGLE_SIZE_T)

#define _ZGTtnwXRKSt9nothrow_t  S(S(_ZGTtnw,MANGLE_SIZE_T),RKSt9nothrow_t)

#define _ZGTtnaXRKSt9nothrow_t  S(S(_ZGTtna,MANGLE_SIZE_T),RKSt9nothrow_t)

/* Everything from libstdc++ is weak, to avoid requiring that library

   to be linked into plain C applications using libitm.so.  */

extern "C" {

extern void *_ZnwX (size_t) __attribute__((weak));

extern void _ZdlPv (void *) __attribute__((weak));

extern void *_ZnaX (size_t) __attribute__((weak));

extern void _ZdaPv (void *) __attribute__((weak));

typedef const struct nothrow_t { } *c_nothrow_p;

extern void *_ZnwXRKSt9nothrow_t (size_t, c_nothrow_p) __attribute__((weak));

extern void _ZdlPvRKSt9nothrow_t (void *, c_nothrow_p) __attribute__((weak));

extern void *_ZnaXRKSt9nothrow_t (size_t, c_nothrow_p) __attribute__((weak));

extern void _ZdaPvRKSt9nothrow_t (void *, c_nothrow_p) __attribute__((weak));

#if !defined (HAVE_ELF_STYLE_WEAKREF) && !defined (__MACH__)

void *_ZnwX (size_t) { return NULL; }

void _ZdlPv (void *) { return; }

void *_ZnaX (size_t) { return NULL; }

void _ZdaPv (void *) { return; }

void *_ZnwXRKSt9nothrow_t (size_t, c_nothrow_p) { return NULL; }

void _ZdlPvRKSt9nothrow_t (void *, c_nothrow_p) { return; }

void *_ZnaXRKSt9nothrow_t (size_t, c_nothrow_p) { return NULL; }

void _ZdaPvRKSt9nothrow_t (void *, c_nothrow_p) { return; }

#endif /* HAVE_ELF_STYLE_WEAKREF */

/* Wrap the delete nothrow symbols for usage with a single argument.

   Perhaps should have a configure type check for this, because the

   std::nothrow_t reference argument is unused (empty class), and most

   targets don't actually need that second argument.  So we _could_

   invoke these functions as if they were a single argument free.  */

static void

del_opnt (void *ptr)

{

  _ZdlPvRKSt9nothrow_t (ptr, NULL);

}

static void

del_opvnt (void *ptr)

{

  _ZdaPvRKSt9nothrow_t (ptr, NULL);

}

/* Wrap: operator new (std::size_t sz)  */

void *

_ZGTtnwX (size_t sz)

{

  void *r = _ZnwX (sz);

  if (r)

    gtm_thr()->record_allocation (r, _ZdlPv);

  return r;

}

/* Wrap: operator new (std::size_t sz, const std::nothrow_t&)  */

void *

_ZGTtnwXRKSt9nothrow_t (size_t sz, c_nothrow_p nt)

{

  void *r = _ZnwXRKSt9nothrow_t (sz, nt);

  if (r)

    gtm_thr()->record_allocation (r, del_opnt);

  return r;

}

/* Wrap: operator new[] (std::size_t sz)  */

void *

_ZGTtnaX (size_t sz)

{

  void *r = _ZnaX (sz);

  if (r)

    gtm_thr()->record_allocation (r, _ZdaPv);

  return r;

}

/* Wrap: operator new[] (std::size_t sz, const std::nothrow_t& nothrow)  */

void *

_ZGTtnaXRKSt9nothrow_t (size_t sz, c_nothrow_p nt)

{

  void *r = _ZnaXRKSt9nothrow_t (sz, nt);

  if (r)

    gtm_thr()->record_allocation (r, del_opvnt);

  return r;

}

/* Wrap: operator delete(void* ptr)  */

void

_ZGTtdlPv (void *ptr)

{

  if (ptr)

    gtm_thr()->forget_allocation (ptr, _ZdlPv);

}

/* Wrap: operator delete (void *ptr, const std::nothrow_t&)  */

void

_ZGTtdlPvRKSt9nothrow_t (void *ptr, c_nothrow_p nt UNUSED)

{

  if (ptr)

    gtm_thr()->forget_allocation (ptr, del_opnt);

}

/* Wrap: operator delete[] (void *ptr)  */

void

_ZGTtdaPv (void *ptr)

{

  if (ptr)

    gtm_thr()->forget_allocation (ptr, _ZdaPv);

}

/* Wrap: operator delete[] (void *ptr, const std::nothrow_t&)  */

void

_ZGTtdaPvRKSt9nothrow_t (void *ptr, c_nothrow_p nt UNUSED)

{

  if (ptr)

    gtm_thr()->forget_allocation (ptr, del_opvnt);

}

} // extern "C"