diff options
Diffstat (limited to 'gcell/ibm/sync/spu_source/atomic_dec_if_positive.h')
| -rw-r--r-- | gcell/ibm/sync/spu_source/atomic_dec_if_positive.h | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/gcell/ibm/sync/spu_source/atomic_dec_if_positive.h b/gcell/ibm/sync/spu_source/atomic_dec_if_positive.h deleted file mode 100644 index 2a01ec307..000000000 --- a/gcell/ibm/sync/spu_source/atomic_dec_if_positive.h +++ /dev/null @@ -1,86 +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 */ -#ifndef _SPU_ATOMIC_DEC_IF_POSITIVE_H_ -#define _SPU_ATOMIC_DEC_IF_POSITIVE_H_ - -#include <sync_utils.h> -#include <atomic.h> - -/** - * atomic_dec_if_positive - atomically decrement if counter is positive. - * @v: handle to effective address of counter. - * - * Atomically decrement a counter if its value is positive. - * The only restriction is that @v must be word aligned. - * -* - * Returns the old value of the counter, minus 1. - */ -static __inline int _atomic_dec_if_positive(atomic_ea_t v) -{ - DECL_ATOMIC_VARS(); - s32 status; - - ea64.ull = ALIGN128_EA(v); - offset = OFFSET128_EA_U32(v); - do { - MFC_DMA(buf, ea64, size, tagid, MFC_GETLLAR_CMD); - spu_readch(MFC_RdAtomicStat); - - ret_val = buf[offset] - 1; - if (likely(ret_val >= 0)) { - buf[offset] = ret_val; - MFC_DMA(buf, ea64, size, tagid, MFC_PUTLLC_CMD); - status = spu_readch(MFC_RdAtomicStat); - } else { - MFC_DMA(buf, ea64, size, tagid, MFC_PUTLLC_CMD); - spu_readch(MFC_RdAtomicStat); - status = 0; - break; - } - } while (status != 0); - - return ret_val; -} - - - -#endif /* _SPU_ATOMIC_DEC_IF_POSITIVE_H_ */ |