diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/include/storage/s_lock.h | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/src/include/storage/s_lock.h b/src/include/storage/s_lock.h index 1174b13694e..d412243e50f 100644 --- a/src/include/storage/s_lock.h +++ b/src/include/storage/s_lock.h @@ -63,7 +63,7 @@ * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: s_lock.h,v 1.101 2002/09/21 00:14:05 tgl Exp $ + * $Id: s_lock.h,v 1.101.2.1 2002/11/22 01:13:28 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -150,7 +150,8 @@ tas(volatile slock_t *lock) #endif /* __arm__ */ -#if defined(__s390__) || defined(__s390x__) + +#if defined(__s390__) && !defined(__s390x__) /* * S/390 Linux */ @@ -176,6 +177,32 @@ tas(volatile slock_t *lock) #endif /* __s390__ */ +#if defined(__s390x__) +/* + * S/390x Linux (64-bit zSeries) + */ +#define TAS(lock) tas(lock) + +static __inline__ int +tas(volatile slock_t *lock) +{ + int _res; + + __asm__ __volatile__( + " la 1,1 \n" + " lg 2,%2 \n" + " slr 0,0 \n" + " cs 0,1,0(2) \n" + " lr %1,0 \n" +: "=m"(lock), "=d"(_res) +: "m"(lock) +: "0", "1", "2"); + + return (_res); +} + +#endif /* __s390x__ */ + #if defined(__sparc__) #define TAS(lock) tas(lock) |