mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-11-28 22:10:50 +08:00
98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
/* 'libstdc++-v3/libsupc++/guard.cc' for offload devices, until we have
|
|
libstdc++-v3/libsupc++ proper.
|
|
|
|
Copyright (C) 2002-2024 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 3, or (at your option) any later
|
|
version.
|
|
|
|
GCC 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/>. */
|
|
|
|
#if defined __AMDGCN__
|
|
#elif defined __nvptx__
|
|
#else
|
|
# error not ported
|
|
#endif
|
|
|
|
#include "../../libstdc++-v3/config/cpu/generic/cxxabi_tweaks.h"
|
|
|
|
/* Copy'n'paste/edit from 'libstdc++-v3/libsupc++/cxxabi.h'. */
|
|
|
|
int
|
|
__cxa_guard_acquire(__guard*);
|
|
|
|
void
|
|
__cxa_guard_release(__guard*);
|
|
|
|
void
|
|
__cxa_guard_abort(__guard*);
|
|
|
|
/* Copy'n'paste/edit from 'libstdc++-v3/libsupc++/guard.cc'. */
|
|
|
|
#undef _GLIBCXX_GUARD_TEST_AND_ACQUIRE
|
|
#undef _GLIBCXX_GUARD_SET_AND_RELEASE
|
|
#define _GLIBCXX_GUARD_SET_AND_RELEASE(G) _GLIBCXX_GUARD_SET (G)
|
|
|
|
static inline int
|
|
init_in_progress_flag(__guard* g)
|
|
{ return ((char *)g)[1]; }
|
|
|
|
static inline void
|
|
set_init_in_progress_flag(__guard* g, int v)
|
|
{ ((char *)g)[1] = v; }
|
|
|
|
static inline void
|
|
throw_recursive_init_exception(void)
|
|
{
|
|
// Use __builtin_trap so we don't require abort().
|
|
__builtin_trap();
|
|
}
|
|
|
|
// acquire() is a helper function used to acquire guard if thread support is
|
|
// not compiled in or is compiled in but not enabled at run-time.
|
|
static int
|
|
acquire(__guard *g)
|
|
{
|
|
// Quit if the object is already initialized.
|
|
if (_GLIBCXX_GUARD_TEST(g))
|
|
return 0;
|
|
|
|
if (init_in_progress_flag(g))
|
|
throw_recursive_init_exception();
|
|
|
|
set_init_in_progress_flag(g, 1);
|
|
return 1;
|
|
}
|
|
|
|
int __cxa_guard_acquire (__guard *g)
|
|
{
|
|
return acquire (g);
|
|
}
|
|
|
|
void __cxa_guard_abort (__guard *g)
|
|
{
|
|
set_init_in_progress_flag(g, 0);
|
|
}
|
|
|
|
void __cxa_guard_release (__guard *g)
|
|
{
|
|
set_init_in_progress_flag(g, 0);
|
|
_GLIBCXX_GUARD_SET_AND_RELEASE (g);
|
|
}
|