https://gcc.gnu.org/g:65b6d374fc7c67462e939a0df762fd81887c4865
commit r16-4305-g65b6d374fc7c67462e939a0df762fd81887c4865 Author: Jonathan Wakely <[email protected]> Date: Tue Oct 7 15:06:43 2025 +0100 libstdc++: Remove unused config/cpu/i486/atomicity.h file This file is no longer used, because we always use the definitions in config/cpu/generic/atomicity_builtins/atomicity.h now. libstdc++-v3/ChangeLog: * config/cpu/i486/atomicity.h: Removed. Reviewed-by: Uros Bizjak <[email protected]> Diff: --- libstdc++-v3/config/cpu/i486/atomicity.h | 52 -------------------------------- 1 file changed, 52 deletions(-) diff --git a/libstdc++-v3/config/cpu/i486/atomicity.h b/libstdc++-v3/config/cpu/i486/atomicity.h deleted file mode 100644 index 092ea9d1e892..000000000000 --- a/libstdc++-v3/config/cpu/i486/atomicity.h +++ /dev/null @@ -1,52 +0,0 @@ -// Low-level functions for atomic operations: x86, x >= 4 version -*- C++ -*- - -// Copyright (C) 1999-2025 Free Software Foundation, Inc. -// -// This file is part of the GNU ISO C++ Library. This library 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. - -// This library 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 <ext/atomicity.h> - -namespace __gnu_cxx _GLIBCXX_VISIBILITY(default) -{ -_GLIBCXX_BEGIN_NAMESPACE_VERSION - - _Atomic_word - __attribute__ ((__unused__)) - __exchange_and_add(volatile _Atomic_word* __mem, int __val) throw () - { - register _Atomic_word __result; - __asm__ __volatile__ ("lock; xadd{l} {%0,%1|%1,%0}" - : "=r" (__result), "=m" (*__mem) - : "0" (__val), "m" (*__mem)); - return __result; - } - - void - __attribute__ ((__unused__)) - __atomic_add(volatile _Atomic_word* __mem, int __val) throw () - { - __asm__ __volatile__ ("lock; add{l} {%1,%0|%0,%1}" - : "=m" (*__mem) : "ir" (__val), "m" (*__mem)); - } - -_GLIBCXX_END_NAMESPACE_VERSION -} // namespace -
