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Revert "GCN, nvptx: Basic '__cxa_guard_{acquire,abort,release}' for C++ static local variables support"

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GCN, nvptx now has libstdc++-v3/libsupc++ proper.

This reverts commit c0bf7ea189.
This commit is contained in:
Thomas Schwinge
2023-12-23 11:01:08 +01:00
committed by Thomas Schwinge
parent c650b557cb
commit fad9d58e05
4 changed files with 0 additions and 105 deletions
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2
libgcc/c++-minimal/README
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@@ -1,2 +0,0 @@
Minimal hacked-up version of some C++ support for offload devices, until we
have libstdc++-v3/libsupc++ proper.

97
libgcc/c++-minimal/guard.c
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@@ -1,97 +0,0 @@
/* 'libstdc++-v3/libsupc++/guard.cc' for offload devices, until we have
libstdc++-v3/libsupc++ proper.
Copyright (C) 2002-2025 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);
}

3
libgcc/config/gcn/t-amdgcn
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@@ -8,9 +8,6 @@ LIB2ADD += $(srcdir)/config/gcn/atomic.c \
$(srcdir)/config/gcn/lib2-bswapti2.c \
$(srcdir)/config/gcn/unwind-gcn.c
# Until we have libstdc++-v3/libsupc++ proper.
LIB2ADD += $(srcdir)/c++-minimal/guard.c
LIB2ADDEH=
LIB2FUNCS_EXCLUDE=__main

3
libgcc/config/nvptx/t-nvptx
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@@ -3,9 +3,6 @@ LIB2ADD=$(srcdir)/config/nvptx/reduction.c \
$(srcdir)/config/nvptx/atomic.c \
$(srcdir)/config/nvptx/unwind-nvptx.c
# Until we have libstdc++-v3/libsupc++ proper.
LIB2ADD += $(srcdir)/c++-minimal/guard.c
LIB2ADDEH=
LIB2FUNCS_EXCLUDE=