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/* Copyright (C) 2009-2015 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)
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"
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