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Added PowerPC interlocked functions from glib.

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svn path=/trunk/; revision=13890
This commit is contained in:
Art Yerkes 2005-03-08 22:39:53 +00:00
parent 1dca540f6b
commit 72f40b7d14
1 changed files with 57 additions and 5 deletions
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62
reactos/lib/rosrtl/misc/intrlck.c
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@ -15,6 +15,29 @@
* Copied from kernel32
*/
/* PowerPC Functions from gatomic.c in glib
*
* GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* g_atomic_*: atomic operations.
* Copyright (C) 2003 Sebastian Wilhelmi
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/************************************************************************
* InterlockedIncrement *
@ -36,6 +59,7 @@ STDCALL
InterlockedIncrement(PLONG Addend)
{
long ret = 0;
#ifdef _M_IX86
__asm__
(
"\tlock\n" /* for SMP systems */
@ -48,6 +72,10 @@ InterlockedIncrement(PLONG Addend)
"2:\n"
:"=r" (ret):"r" (Addend), "0" (0): "memory"
);
#elif defined(_M_PPC)
ret = *Addend;
ret = InterlockedExchangeAdd( Addend, ret + 1 );
#endif
return ret;
}
@ -67,6 +95,7 @@ STDCALL
InterlockedDecrement(LPLONG lpAddend)
{
long ret;
#ifdef _M_IX86
__asm__
(
"\tlock\n" /* for SMP systems */
@ -79,6 +108,10 @@ InterlockedDecrement(LPLONG lpAddend)
"2:\n"
:"=r" (ret):"r" (lpAddend), "0" (0): "memory"
);
#elif defined(_M_PPC)
ret = *lpAddend;
ret = InterlockedExchangeAdd( lpAddend, ret - 1 );
#endif
return ret;
@ -97,14 +130,16 @@ LONG
STDCALL
InterlockedExchange(LPLONG target, LONG value )
{
long ret;
#ifdef _M_IX86
__asm__ ( /* lock for SMP systems */
"lock\n\txchgl %0,(%1)"
:"=r" (ret):"r" (target), "0" (value):"memory" );
#elif defined(_M_PPC)
ret = *target;
while( InterlockedCompareExchange( target, value, ret ) != value );
#endif
return ret;
}
/************************************************************************
@ -124,8 +159,21 @@ InterlockedCompareExchange(
LONG Comperand )
{
LONG ret;
#ifdef _M_IX86
__asm__ __volatile__( "lock; cmpxchgl %2,(%1)"
: "=a" (ret) : "r" (Destination), "r" (Exchange), "0" (Comperand) : "memory" );
#elif defined(_M_PPC)
__asm__ __volatile__ ("sync\n"
"1: lwarx %0,0,%1\n"
" subf. %0,%2,%0\n"
" bne 2f\n"
" stwcx. %3,0,%1\n"
" bne- 1b\n"
"2: isync"
: "=&r" (ret)
: "b" (Destination), "r" (Comperand), "r" (Exchange)
: "cr0", "memory");
#endif
return ret;
}
@ -145,14 +193,18 @@ InterlockedExchangeAdd(
LONG Increment
)
{
LONG ret;
#ifdef _M_IX86
__asm__ ( /* lock for SMP systems */
"lock\n\t"
"xaddl %0,(%1)"
:"=r" (ret)
:"r" (Addend), "0" (Increment)
:"memory" );
#elif defined(_M_PPC)
do
ret = *Addend;
while (!InterlockedCompareExchange(Addend, ret, ret + Increment));
#endif
return ret;
}