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> > I'll re-check that with the ppc architecture guy here.
> > ... he is now about to write an inlined version that can go into > s_lock.h . I'll send the new patch later on... OK, here it comes: An inlined version of tas(), that works for both, powerpc and powerpc64. The patch is against 7.3b5 and passes the test suite on both architectures. Reinhard Max
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@ -9,7 +9,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/storage/lmgr/s_lock.c,v 1.9 2002/09/21 00:14:05 tgl Exp $
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* $Header: /cvsroot/pgsql/src/backend/storage/lmgr/s_lock.c,v 1.10 2002/11/10 00:33:43 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -144,31 +144,6 @@ success: \n\
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}
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#endif /* __APPLE__ && __ppc__ */
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#if defined(__powerpc__)
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/* Note: need a nice gcc constrained asm version so it can be inlined */
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static void
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tas_dummy()
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{
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__asm__ __volatile__(
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"\
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.global tas \n\
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tas: \n\
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lwarx 5,0,3 \n\
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cmpwi 5,0 \n\
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bne fail \n\
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addi 5,5,1 \n\
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stwcx. 5,0,3 \n\
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beq success \n\
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fail: li 3,1 \n\
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blr \n\
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success: \n\
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isync \n\
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li 3,0 \n\
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blr \n\
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");
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}
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#endif /* __powerpc__ */
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#if defined(__mips__) && !defined(__sgi)
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static void
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tas_dummy()
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@ -14,6 +14,11 @@ typedef unsigned char slock_t;
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#define HAS_TEST_AND_SET
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#elif defined(__powerpc64__)
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typedef unsigned long slock_t;
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#define HAS_TEST_AND_SET
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#elif defined(__powerpc__)
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typedef unsigned int slock_t;
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@ -63,7 +63,7 @@
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* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $Id: s_lock.h,v 1.101 2002/09/21 00:14:05 tgl Exp $
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* $Id: s_lock.h,v 1.102 2002/11/10 00:33:43 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -194,6 +194,35 @@ tas(volatile slock_t *lock)
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#endif /* __sparc__ */
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#if defined(__powerpc__) || defined(__powerpc64__)
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static __inline__ int
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tas(volatile slock_t *lock)
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{
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slock_t _t;
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int _res;
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__asm__ __volatile__(
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" lwarx %0,0,%3 \n"
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" cmpwi %0,0 \n"
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" bne 1f \n"
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" addi %0,%0,1 \n"
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" stwcx. %0,0,%3 \n"
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" isync \n"
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" beq 2f \n"
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"1: li %2,1 \n"
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" b 3f \n"
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"2: \n"
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" li %2,0 \n"
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"3: \n"
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: "=&r" (_t), "=m" (lock), "=r" (_res)
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: "r" (lock)
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: "cc", "memory"
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);
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return _res;
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}
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#endif
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#if defined(__mc68000__) && defined(__linux__)
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#define TAS(lock) tas(lock)
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