From: Chris Metcalf <cmetcalf@mellanox.com>
Date: Wed, 11 May 2016 19:19:57 +0000 (+0300)
Subject: Basic support of TILE-Gx and TILEPro CPUs
X-Git-Tag: v7.6.0~210
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=04a286421802a503b58d804d0d673dd5a28c9e9b;p=libatomic_ops

Basic support of TILE-Gx and TILEPro CPUs

This patch is an updated version of the CentOS 6 patch that we have
been carrying as part of our own CentOS-like distribution since 2012.

* src/Makefile.am (nobase_private_HEADERS): Add tile.h.
* src/atomic_ops.h [__tile__]: Include tile.h file.
* src/atomic_ops/sysdeps/gcc/tile.h: New file.
---

diff --git a/src/Makefile.am b/src/Makefile.am
index d463427..8971370 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -84,6 +84,7 @@ nobase_private_HEADERS = atomic_ops/ao_version.h \
           atomic_ops/sysdeps/gcc/s390.h \
           atomic_ops/sysdeps/gcc/sh.h \
           atomic_ops/sysdeps/gcc/sparc.h \
+          atomic_ops/sysdeps/gcc/tile.h \
           atomic_ops/sysdeps/gcc/x86.h \
         \
           atomic_ops/sysdeps/hpc/hppa.h \
diff --git a/src/atomic_ops.h b/src/atomic_ops.h
index ec02ba4..ef37b9f 100644
--- a/src/atomic_ops.h
+++ b/src/atomic_ops.h
@@ -294,6 +294,9 @@
 # if defined(__hexagon__)
 #   include "atomic_ops/sysdeps/gcc/hexagon.h"
 # endif
+# if defined(__tile__)
+#   include "atomic_ops/sysdeps/gcc/tile.h"
+# endif
 #endif /* __GNUC__ && !AO_USE_PTHREAD_DEFS */
 
 #if (defined(__IBMC__) || defined(__IBMCPP__)) && !defined(__GNUC__) \
diff --git a/src/atomic_ops/sysdeps/gcc/tile.h b/src/atomic_ops/sysdeps/gcc/tile.h
new file mode 100644
index 0000000..0c13180
--- /dev/null
+++ b/src/atomic_ops/sysdeps/gcc/tile.h
@@ -0,0 +1,50 @@
+/*
+ * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
+ * OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
+ *
+ * Permission is hereby granted to use or copy this program
+ * for any purpose, provided the above notices are retained on all copies.
+ * Permission to modify the code and to distribute modified code is granted,
+ * provided the above notices are retained, and a notice that the code was
+ * modified is included with the above copyright notice.
+ */
+
+/* Minimal support for tile.    */
+
+#if ((__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) \
+     || __clang_major__ > 3 \
+     || (__clang_major__ == 3 && __clang_minor__ >= 4)) \
+    && !defined(AO_DISABLE_GCC_ATOMICS)
+
+# include "generic.h"
+
+#else /* AO_DISABLE_GCC_ATOMICS */
+
+# include "../all_atomic_load_store.h"
+
+# include "../test_and_set_t_is_ao_t.h"
+
+  AO_INLINE void
+  AO_nop_full(void)
+  {
+    __sync_synchronize();
+  }
+# define AO_HAVE_nop_full
+
+  AO_INLINE AO_t
+  AO_fetch_and_add_full(volatile AO_t *p, AO_t incr)
+  {
+    return __sync_fetch_and_add(p, incr);
+  }
+# define AO_HAVE_fetch_and_add_full
+
+  AO_INLINE AO_t
+  AO_fetch_compare_and_swap_full(volatile AO_t *addr, AO_t old_val,
+                                 AO_t new_val)
+  {
+    return __sync_val_compare_and_swap(addr, old_val, new_val
+                                       /* empty protection list */);
+  }
+# define AO_HAVE_fetch_compare_and_swap_full
+
+#endif /* AO_DISABLE_GCC_ATOMICS */