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Diffstat (limited to 'gcell/ibm/sync/ppu_source/atomic.h')
| -rw-r--r-- | gcell/ibm/sync/ppu_source/atomic.h | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/gcell/ibm/sync/ppu_source/atomic.h b/gcell/ibm/sync/ppu_source/atomic.h deleted file mode 100644 index 105f7bf37..000000000 --- a/gcell/ibm/sync/ppu_source/atomic.h +++ /dev/null @@ -1,112 +0,0 @@ -/* -------------------------------------------------------------- */ -/* (C)Copyright 2001,2007, */ -/* International Business Machines Corporation, */ -/* Sony Computer Entertainment, Incorporated, */ -/* Toshiba Corporation, */ -/* */ -/* All Rights Reserved. */ -/* */ -/* Redistribution and use in source and binary forms, with or */ -/* without modification, are permitted provided that the */ -/* following conditions are met: */ -/* */ -/* - Redistributions of source code must retain the above copyright*/ -/* notice, this list of conditions and the following disclaimer. */ -/* */ -/* - Redistributions in binary form must reproduce the above */ -/* copyright notice, this list of conditions and the following */ -/* disclaimer in the documentation and/or other materials */ -/* provided with the distribution. */ -/* */ -/* - Neither the name of IBM Corporation nor the names of its */ -/* contributors may be used to endorse or promote products */ -/* derived from this software without specific prior written */ -/* permission. */ -/* */ -/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND */ -/* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, */ -/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */ -/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */ -/* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR */ -/* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */ -/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT */ -/* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; */ -/* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) */ -/* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN */ -/* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR */ -/* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */ -/* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ -/* -------------------------------------------------------------- */ -/* PROLOG END TAG zYx */ -/* - * atomic.h - PPE atomic SHM counter operations. - * - * Interfaces patterned after, and hopefully compatible - * with PowerPC64-Linux atomic counter operations. Uses - * 32b values for various counters. - */ -#ifndef _PPU_ATOMIC_H_ -#define _PPU_ATOMIC_H_ - -#include <ppu_intrinsics.h> -#include "sync_utils.h" - -typedef unsigned int atomic_t __attribute__ ((aligned (128))); - - -/* atomic_ea_t is a 64bit effective address that points to - * an atomic_t variable - */ -typedef unsigned long long atomic_ea_t; - -/** - * ASSUMPTIONS: - * On the PPE, the size of a reservation granule is 128 bytes - * (a cache-line), so when a programmer puts a reservation on an - * address, that whole cacheline is reserved. Therefore both - * the PPE and SPE can participate in an atomic operation as long as - * lwarx and getllar operate on the same cacheline. - */ - - -/* - * atomically loads and replaces the value v with val. - * Returns the old value at v - */ -static __inline int _atomic_replace(atomic_ea_t v, int val) -{ - int old; - void *p; - - SYNC_ULL_TO_PTR(v, p); - - do { - old = (int)__lwarx(p); - } while (__stwcx(p, (unsigned int)val) == 0); - - return old; -} - - -/* - * atomically loads the value at v, adds val, replaces the - * value at v with the sum. Returns the old value at v - */ -static __inline int _atomic_modify(atomic_ea_t v, int val) -{ - int oldval, newval; - void *p; - - SYNC_ULL_TO_PTR(v, p); - - do { - oldval = (int)__lwarx(p); - newval = oldval + val; - } while (__stwcx(p, (unsigned int)newval) == 0); - - return oldval; -} - - -#endif /* _PPU_ATOMIC_H_ */ - |