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Added PowerPC interlocked functions from glib.
svn path=/trunk/; revision=13890
This commit is contained in:
Art Yerkes
parent
1dca540f6b
commit
72f40b7d14
1 changed files with 57 additions and 5 deletions
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@ -15,6 +15,29 @@
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* Copied from kernel32
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* Copied from kernel32
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*/
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*/
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/* PowerPC Functions from gatomic.c in glib
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*
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* GLIB - Library of useful routines for C programming
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* g_atomic_*: atomic operations.
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* Copyright (C) 2003 Sebastian Wilhelmi
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/************************************************************************
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/************************************************************************
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* InterlockedIncrement *
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* InterlockedIncrement *
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@ -36,6 +59,7 @@ STDCALL
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InterlockedIncrement(PLONG Addend)
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InterlockedIncrement(PLONG Addend)
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{
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{
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long ret = 0;
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long ret = 0;
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#ifdef _M_IX86
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__asm__
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__asm__
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(
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(
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"\tlock\n" /* for SMP systems */
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"\tlock\n" /* for SMP systems */
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@ -48,6 +72,10 @@ InterlockedIncrement(PLONG Addend)
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"2:\n"
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"2:\n"
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:"=r" (ret):"r" (Addend), "0" (0): "memory"
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:"=r" (ret):"r" (Addend), "0" (0): "memory"
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);
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);
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#elif defined(_M_PPC)
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ret = *Addend;
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ret = InterlockedExchangeAdd( Addend, ret + 1 );
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#endif
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return ret;
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return ret;
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}
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}
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@ -67,6 +95,7 @@ STDCALL
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InterlockedDecrement(LPLONG lpAddend)
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InterlockedDecrement(LPLONG lpAddend)
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{
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{
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long ret;
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long ret;
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#ifdef _M_IX86
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__asm__
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__asm__
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(
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(
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"\tlock\n" /* for SMP systems */
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"\tlock\n" /* for SMP systems */
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@ -79,6 +108,10 @@ InterlockedDecrement(LPLONG lpAddend)
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"2:\n"
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"2:\n"
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:"=r" (ret):"r" (lpAddend), "0" (0): "memory"
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:"=r" (ret):"r" (lpAddend), "0" (0): "memory"
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);
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);
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#elif defined(_M_PPC)
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ret = *lpAddend;
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ret = InterlockedExchangeAdd( lpAddend, ret - 1 );
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#endif
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return ret;
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return ret;
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@ -97,14 +130,16 @@ LONG
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STDCALL
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STDCALL
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InterlockedExchange(LPLONG target, LONG value )
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InterlockedExchange(LPLONG target, LONG value )
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{
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{
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long ret;
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long ret;
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#ifdef _M_IX86
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__asm__ ( /* lock for SMP systems */
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__asm__ ( /* lock for SMP systems */
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"lock\n\txchgl %0,(%1)"
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"lock\n\txchgl %0,(%1)"
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:"=r" (ret):"r" (target), "0" (value):"memory" );
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:"=r" (ret):"r" (target), "0" (value):"memory" );
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#elif defined(_M_PPC)
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ret = *target;
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while( InterlockedCompareExchange( target, value, ret ) != value );
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#endif
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return ret;
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return ret;
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}
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}
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/************************************************************************
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/************************************************************************
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@ -124,8 +159,21 @@ InterlockedCompareExchange(
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LONG Comperand )
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LONG Comperand )
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{
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{
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LONG ret;
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LONG ret;
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#ifdef _M_IX86
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__asm__ __volatile__( "lock; cmpxchgl %2,(%1)"
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__asm__ __volatile__( "lock; cmpxchgl %2,(%1)"
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: "=a" (ret) : "r" (Destination), "r" (Exchange), "0" (Comperand) : "memory" );
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: "=a" (ret) : "r" (Destination), "r" (Exchange), "0" (Comperand) : "memory" );
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#elif defined(_M_PPC)
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__asm__ __volatile__ ("sync\n"
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"1: lwarx %0,0,%1\n"
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" subf. %0,%2,%0\n"
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" bne 2f\n"
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" stwcx. %3,0,%1\n"
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" bne- 1b\n"
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"2: isync"
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: "=&r" (ret)
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: "b" (Destination), "r" (Comperand), "r" (Exchange)
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: "cr0", "memory");
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#endif
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return ret;
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return ret;
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}
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}
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@ -145,14 +193,18 @@ InterlockedExchangeAdd(
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LONG Increment
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LONG Increment
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)
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)
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{
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{
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LONG ret;
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LONG ret;
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#ifdef _M_IX86
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__asm__ ( /* lock for SMP systems */
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__asm__ ( /* lock for SMP systems */
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"lock\n\t"
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"lock\n\t"
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"xaddl %0,(%1)"
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"xaddl %0,(%1)"
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:"=r" (ret)
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:"=r" (ret)
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:"r" (Addend), "0" (Increment)
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:"r" (Addend), "0" (Increment)
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:"memory" );
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:"memory" );
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#elif defined(_M_PPC)
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do
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ret = *Addend;
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while (!InterlockedCompareExchange(Addend, ret, ret + Increment));
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#endif
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return ret;
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return ret;
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}
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}
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