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

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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
This commit is contained in:
Paolo Carlini 2005-05-25 09:25:25 +00:00 committed by Paolo Carlini
parent 38fc66bac7
commit 5bf6892e61
4 changed files with 17 additions and 72 deletions
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7
libstdc++-v3/ChangeLog
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@ -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...

38
libstdc++-v3/config/cpu/alpha/atomicity.h
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@ -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

4
libstdc++-v3/config/cpu/ia64/atomicity.h
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@ -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
{

40
libstdc++-v3/config/cpu/powerpc/atomicity.h
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@ -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