Re: [HACKERS] spinlock code for ns32k (again)

Applied.

> Here's the new diff for getting the NS32K assembly code into the
> 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
>
>
>
> Index: src/include/storage/s_lock.h
> ===================================================================
> RCS file: /usr/local/cvsroot/pgsql/src/include/storage/s_lock.h,v
> retrieving revision 1.50
> diff -r1.50 s_lock.h
> 170a171,186
> > #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 */
> >
> >
> 214,231d229
> <
> <
> <
> < #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 */
> <
>
>

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