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Here's the new diff for getting the NS32K assembly code into the

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spin-locks.  Notice that it's now inline assembler in s_lock.h,
rather than seperate code in s_lock.c.  It also shrank a little
bit...  Just rip out the S_LOCK() define and insert the tas() inline
function.  Please let me know if there are any problems with it.

Jon Buller
This commit is contained in:
Bruce Momjian 1998-10-02 15:23:08 +00:00
parent 744c3cd271
commit 731ea8076f
1 changed files with 17 additions and 19 deletions
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36
src/include/storage/s_lock.h
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/include/storage/s_lock.h,v 1.51 1998/10/01 01:53:50 tgl Exp $
* $Header: /cvsroot/pgsql/src/include/storage/s_lock.h,v 1.52 1998/10/02 15:23:08 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -168,6 +168,22 @@ tas(volatile slock_t *lock)
#if defined(NEED_NS32K_TAS_ASM)
#define TAS(lock) tas(lock)
static __inline__ int
tas(volatile slock_t *lock)
{
register _res;
__asm__("sbitb 0, %0
sfsd %1"
: "=m"(*lock), "=r"(_res));
return (int) _res;
}
#endif /* NEED_NS32K_TAS_ASM */
#else /* __GNUC__ */
/***************************************************************************
@ -212,24 +228,6 @@ tas(slock_t *s_lock)
#endif /* NEED_I386_TAS_ASM */
#if defined(NEED_NS32K_TAS_ASM)
#define S_LOCK(lock) \
{ \
slock_t res = 1; \
while (res) { \
__asm__("movqd 0, r0"); \
__asm__("sbitd r0, %0" : "=m"(*lock)); \
__asm__("sprb us, %0" : "=r" (res)); \
res = ((res >> 5) & 1); \
} \
}
#endif /* NEED_NS32K_TAS_ASM */
#endif /* defined(__GNUC__) */