atomicity.h: Use the builtins for atomic memory operations.

2005-05-25  Paolo Carlini  <pcarlini@suse.de>

	* config/cpu/alpha/atomicity.h: Use the builtins for
	atomic memory operations.
	* config/cpu/powerpc/atomicity.h: Likewise.
	* config/cpu/ia64/atomicity.h: Do not include ia64intrin.h.

From-SVN: r100139

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index d84060a01d4472a89bc587f0ece7d82ceae6744f..37880848f71afe86fd4976ea8232719c3214ca01 100644 (file)
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,10 @@
+2005-05-25  Paolo Carlini  <pcarlini@suse.de>
+
+       * config/cpu/alpha/atomicity.h: Use the builtins for
+       atomic memory operations.
+       * config/cpu/powerpc/atomicity.h: Likewise.
+       * config/cpu/ia64/atomicity.h: Do not include ia64intrin.h.
+
 2005-05-24  Paolo Carlini  <pcarlini@suse.de>
 
        * testsuite/25_algorithms/equal.cc: Move to...

diff --git a/libstdc++-v3/config/cpu/alpha/atomicity.h b/libstdc++-v3/config/cpu/alpha/atomicity.h
index 4eb311b509a48a1d249839e0e6562f164c795783..24a4feb1b64f03457fc59a86899f23ca152a36eb 100644 (file)
--- a/libstdc++-v3/config/cpu/alpha/atomicity.h
+++ b/libstdc++-v3/config/cpu/alpha/atomicity.h
@@ -1,6 +1,7 @@
 // Low-level functions for atomic operations: Alpha version  -*- C++ -*-
 
-// Copyright (C) 1999, 2000, 2001, 2003, 2004 Free Software Foundation, Inc.
+// Copyright (C) 1999, 2000, 2001, 2003, 2004, 2005
+// 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
@@ -29,47 +30,16 @@
 
 #include <bits/atomicity.h>
 
-/* @@@ With gas we can play nice .subsection games to get the
-   non-predicted branch pointing forward.  But Digital assemblers
-   don't understand those directives.  This isn't a terribly
-   important issue, so just ignore it.  */
-
 namespace __gnu_cxx
 {
   _Atomic_word
   __attribute__ ((__unused__))
   __exchange_and_add(volatile _Atomic_word* __mem, int __val)
-  {
-    register int __result, __tmp;
-    
-    __asm__ __volatile__ (
-      "\n$Lxadd_%=:\n\t"
-      "ldl_l  %0,%3\n\t"
-      "addl   %0,%4,%1\n\t"
-      "stl_c  %1,%2\n\t"
-      "beq    %1,$Lxadd_%=\n\t"
-      "mb"
-      : "=&r"(__result), "=&r"(__tmp), "=m"(*__mem)
-      : "m" (*__mem), "r"(__val));
-
-    return __result;
-  }
+  { return __sync_fetch_and_add(__mem, __val); }
 
   void
   __attribute__ ((__unused__))
   __atomic_add(volatile _Atomic_word* __mem, int __val)
-  {
-    register _Atomic_word __result;
-
-    __asm__ __volatile__ (
-      "\n$Ladd_%=:\n\t"
-      "ldl_l  %0,%2\n\t"
-      "addl   %0,%3,%0\n\t"
-      "stl_c  %0,%1\n\t"
-      "beq    %0,$Ladd_%=\n\t"
-      "mb"
-      : "=&r"(__result), "=m"(*__mem)
-      : "m" (*__mem), "r"(__val));
-  }
+  { __sync_fetch_and_add(__mem, __val); }
 } // namespace __gnu_cxx
 

diff --git a/libstdc++-v3/config/cpu/ia64/atomicity.h b/libstdc++-v3/config/cpu/ia64/atomicity.h
index 0c3ab3343e9254fb68c43169e53f12eb901bb834..c651b846e99261e466eab0f4af8474cfc108d374 100644 (file)
--- a/libstdc++-v3/config/cpu/ia64/atomicity.h
+++ b/libstdc++-v3/config/cpu/ia64/atomicity.h
@@ -1,6 +1,7 @@
 // Low-level functions for atomic operations: IA64 version  -*- C++ -*-
 
-// Copyright (C) 2000, 2001, 2003, 2004 Free Software Foundation, Inc.
+// Copyright (C) 2000, 2001, 2003, 2004, 2005
+// 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
@@ -28,7 +29,6 @@
 // the GNU General Public License.
 
 #include <bits/atomicity.h>
-#include <ia64intrin.h>
 
 namespace __gnu_cxx
 {

diff --git a/libstdc++-v3/config/cpu/powerpc/atomicity.h b/libstdc++-v3/config/cpu/powerpc/atomicity.h
index 73149441dd83fcd4a108ccafe5f2d11053f8c190..d3e1e7464e4b50840d8fe06a22681ff30b8d3368 100644 (file)
--- a/libstdc++-v3/config/cpu/powerpc/atomicity.h
+++ b/libstdc++-v3/config/cpu/powerpc/atomicity.h
@@ -1,6 +1,7 @@
 // Low-level functions for atomic operations: PowerPC version  -*- C++ -*-
 
-// Copyright (C) 1999, 2000, 2001, 2003, 2004 Free Software Foundation, Inc.
+// Copyright (C) 1999, 2000, 2001, 2003, 2004, 2005
+// 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
@@ -29,48 +30,15 @@
 
 #include <bits/atomicity.h>
 
-#ifdef __PPC405__
-#define _STWCX "sync \n\tstwcx. "
-#else
-#define _STWCX "stwcx. "
-#endif
-
 namespace __gnu_cxx
 {
   _Atomic_word
   __attribute__ ((__unused__))
   __exchange_and_add(volatile _Atomic_word* __mem, int __val)
-  {
-    _Atomic_word __tmp, __res;
-    __asm__ __volatile__ (
-                         "/* Inline exchange & add */\n"
-                         "0:\t"
-                         "lwarx    %0,0,%3 \n\t"
-                         "add%I4   %1,%0,%4 \n\t"
-                         _STWCX "  %1,0,%3 \n\t"
-                         "bne-     0b \n\t"
-                         "/* End exchange & add */"
-                         : "=&b"(__res), "=&r"(__tmp), "=m" (*__mem)
-                         : "r" (__mem), "Ir"(__val), "m" (*__mem)
-                         : "cr0");
-    return __res;
-  }
+  { return __sync_fetch_and_add(__mem, __val); }
   
   void
   __attribute__ ((__unused__))
   __atomic_add(volatile _Atomic_word* __mem, int __val)
-  {
-    _Atomic_word __tmp;
-    __asm__ __volatile__ (
-                         "/* Inline atomic add */\n"
-                         "0:\t"
-                         "lwarx    %0,0,%2 \n\t"
-                         "add%I3   %0,%0,%3 \n\t"
-                         _STWCX "  %0,0,%2 \n\t"
-                         "bne-     0b \n\t"
-                         "/* End atomic add */"
-                         : "=&b"(__tmp), "=m" (*__mem)
-                         : "r" (__mem), "Ir"(__val), "m" (*__mem)
-                         : "cr0");
-  }
+  { __sync_fetch_and_add(__mem, __val); }
 } // namespace __gnu_cxx