mpiP/arch-add-generic-arch-using-GCC-builtins.patch

commit 38967f5106f8c9b813311a24dda42b8d69a07bda
Author: Nicolas Morey <nmorey@suse.com>
Date:   Thu Sep 5 15:49:05 2024 +0200

    arch: add generic arch using GCC builtins
    
    Signed-off-by: Nicolas Morey <nmorey@suse.com>

diff --git arch/arch.h arch/arch.h
index 54312d483416..eab352557158 100644
--- arch/arch.h
+++ arch/arch.h
@@ -19,6 +19,8 @@
 #include "arch/arch_ppc.h"
 #elif __aarch64__
 #include "arch/arch_arm64.h"
+#else
+#include "arch/arch_generic.h"
 #endif
 
 #endif // ARCH_ATOMICS_H
diff --git arch/arch_generic.h arch/arch_generic.h
new file mode 100644
index 000000000000..9b46200b7ee5
--- /dev/null
+++ arch/arch_generic.h
@@ -0,0 +1,143 @@
+#ifndef ARCH_GENERIC_H
+#define ARCH_GENERIC_H
+
+#include <stdint.h>
+#include "mpiPconfig.h"
+
+
+static inline void mpiP_atomic_wmb(void)
+{
+    __atomic_thread_fence (__ATOMIC_RELEASE);
+}
+
+static inline void mpiP_atomic_isync(void)
+{
+}
+
+#if (SIZEOF_VOIDP == 8)
+static inline void *mpiP_atomic_swap(void **_addr, void *_newval)
+{
+  int64_t *addr  = (int64_t *)_addr;
+  int64_t newval = (int64_t)_newval;
+  int64_t oldval;
+
+  __atomic_exchange (addr, &newval, &oldval, __ATOMIC_RELAXED);
+  return (void*)oldval;
+}
+
+static inline int mpiP_atomic_cas(void **_addr, void **_oldval, void *_newval)
+{
+  int64_t *addr   = (int64_t*)_addr;
+  int64_t *oldval = (int64_t*)_oldval;
+  int64_t newval  = (int64_t)_newval;
+
+  return __atomic_compare_exchange_n (addr, oldval, newval, 0, __ATOMIC_ACQUIRE, __ATOMIC_RELAXED);
+}
+
+#else
+
+static inline void *mpiP_atomic_swap(void **_addr, void *_newval)
+{
+  int32_t *addr= (int32_t *)_addr;
+  int32_t newval = (int32_t)_newval;
+  int32_t oldval;
+
+  __atomic_exchange (addr, &newval, &oldval, __ATOMIC_RELAXED);
+  return (void*)oldval;
+}
+
+
+static inline int mpiP_atomic_cas(void **_addr, void **_oldval, void *_newval)
+{
+  int32_t *addr = (int32_t*)_addr;
+  int32_t *oldval = (int32_t*)_oldval;
+  int32_t newval = (int32_t)_newval;
+
+  return __atomic_compare_exchange_n (addr, oldval, newval, 0, __ATOMIC_ACQUIRE, __ATOMIC_RELAXED);
+}
+#endif
+
+#endif
+
+
+/*
+
+<license>
+
+This code was derived from Open MPI OPAL layer.
+
+Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
+                        University Research and Technology
+                        Corporation.  All rights reserved.
+Copyright (c) 2004-2010 The University of Tennessee and The University
+                        of Tennessee Research Foundation.  All rights
+                        reserved.
+Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
+                        University of Stuttgart.  All rights reserved.
+Copyright (c) 2004-2005 The Regents of the University of California.
+                        All rights reserved.
+Copyright (c) 2007      Sun Microsystems, Inc.  All rights reserverd.
+Copyright (c) 2012-2018 Los Alamos National Security, LLC. All rights
+                        reserved.
+Copyright (c) 2016-2017 Research Organization for Information Science
+                        and Technology (RIST). All rights reserved.
+Copyright (c) 2019      Mellanox Technologies Ltd. All rights reserved.
+
+This file is part of mpiP.  For details, see http://llnl.github.io/mpiP.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+* Redistributions of source code must retain the above copyright
+notice, this list of conditions and the disclaimer below.
+
+* Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the disclaimer (as noted below) in
+the documentation and/or other materials provided with the
+distribution.
+
+* Neither the name of the UC/LLNL nor the names of its contributors
+may be used to endorse or promote products derived from this software
+without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OF
+THE UNIVERSITY OF CALIFORNIA, THE U.S. DEPARTMENT OF ENERGY OR
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+Additional BSD Notice
+
+1. This notice is required to be provided under our contract with the
+U.S. Department of Energy (DOE).  This work was produced at the
+University of California, Lawrence Livermore National Laboratory under
+Contract No. W-7405-ENG-48 with the DOE.
+
+2. Neither the United States Government nor the University of
+California nor any of their employees, makes any warranty, express or
+implied, or assumes any liability or responsibility for the accuracy,
+completeness, or usefulness of any information, apparatus, product, or
+process disclosed, or represents that its use would not infringe
+privately-owned rights.
+
+3.  Also, reference herein to any specific commercial products,
+process, or services by trade name, trademark, manufacturer or
+otherwise does not necessarily constitute or imply its endorsement,
+recommendation, or favoring by the United States Government or the
+University of California.  The views and opinions of authors expressed
+herein do not necessarily state or reflect those of the United States
+Government or the University of California, and shall not be used for
+advertising or product endorsement purposes.
+
+</license>
+
+*/