git
/
gcc
mirror of git://gcc.gnu.org/git/gcc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

libstdc++: Remove unused config/cpu/cris/atomicity.h file [PR122172] 

This file is no longer used, because we always use the definitions in
config/cpu/generic/atomicity_builtins/atomicity.h now.

H-P confirmed that the code generated by __atomic_fetch_add is fine and
we don't need the handwritten assembly.

libstdc++-v3/ChangeLog:

	PR libstdc++/122172
	* config/cpu/cris/atomicity.h: Removed.

Reviewed-by: Hans-Peter Nilsson <hp@axis.com>
This commit is contained in:
Jonathan Wakely 2025-10-07 15:06:43 +01:00 committed by Jonathan Wakely
parent 152f4daab4
commit bca9dd1105
No known key found for this signature in database
1 changed files with 0 additions and 89 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

89
libstdc++-v3/config/cpu/cris/atomicity.h
View File

@ -1,89 +0,0 @@
// Low-level functions for atomic operations: CRIS version -*- C++ -*-
// Copyright (C) 2001-2025 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
__exchange_and_add(volatile _Atomic_word* __mem, int __val) throw ()
{
int __tmp;
_Atomic_word __result;
#if (__CRIS_arch_version >= 32)
__asm__ __volatile__ (" clearf p \n"
"0: \n"
" move.d %4,%2 \n"
" move.d [%3],%0 \n"
" add.d %0,%2 \n"
" ax \n"
" move.d %2,[%3] \n"
" bcs 0b \n"
" clearf p \n"
: "=&r" (__result), "=Q" (*__mem), "=&r" (__tmp)
: "r" (__mem), "g" (__val), "Q" (*__mem)
: "memory");
#elif (__CRIS_arch_version >= 10)
__asm__ __volatile__ (" clearf \n"
"0: \n"
" move.d %4,%2 \n"
" move.d [%3],%0 \n"
" add.d %0,%2 \n"
" ax \n"
" move.d %2,[%3] \n"
" bwf 0b \n"
" clearf \n"
: "=&r" (__result), "=Q" (*__mem), "=&r" (__tmp)
: "r" (__mem), "g" (__val), "Q" (*__mem)
/* The memory clobber must stay, regardless of
current uses of this function. */
: "memory");
#else
__asm__ __volatile__ (" move $ccr,$r9 \n"
" di \n"
" move.d %4,%2 \n"
" move.d [%3],%0 \n"
" add.d %0,%2 \n"
" move.d %2,[%3] \n"
" move $r9,$ccr \n"
: "=&r" (__result), "=Q" (*__mem), "=&r" (__tmp)
: "r" (__mem), "g" (__val), "Q" (*__mem)
: "r9",
/* The memory clobber must stay, regardless of
current uses of this function. */
"memory");
#endif
return __result;
}
void
__atomic_add(volatile _Atomic_word* __mem, int __val) throw ()
{ __exchange_and_add(__mem, __val); }
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace