diff options
Diffstat (limited to 'db2/mutex/parisc.gcc')
| -rw-r--r-- | db2/mutex/parisc.gcc | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/db2/mutex/parisc.gcc b/db2/mutex/parisc.gcc index e15f6f2..2e4540f 100644 --- a/db2/mutex/parisc.gcc +++ b/db2/mutex/parisc.gcc @@ -1,5 +1,5 @@ -/* - * @(#)parisc.gcc 8.5 (Sleepycat) 1/18/97 +/* + * @(#)parisc.gcc 8.8 (Sleepycat) 6/2/98 * * Copyright (c) 1996-1997, The University of Utah and the Computer Systems * Laboratory at the University of Utah (CSL). All rights reserved. @@ -22,19 +22,15 @@ /* * The PA-RISC has a "load and clear" instead of a "test and set" instruction. - * The 32-bit word used by that instruction must be 16-byte aligned hence we - * allocate 16 bytes for a tsl_t and use the word that is properly aligned. - * We could use the "aligned" attribute in GCC but that doesn't work for stack - * variables. + * The 32-bit word used by that instruction must be 16-byte aligned. We could + * use the "aligned" attribute in GCC but that doesn't work for stack variables. */ #define TSL_SET(tsl) ({ \ - int *__l = (int *)(((int)(tsl)+15)&~15); \ + register tsl_t *__l = (tsl); \ int __r; \ asm volatile("ldcws 0(%1),%0" : "=r" (__r) : "r" (__l)); \ __r & 1; \ }) -#define TSL_UNSET(tsl) ({ \ - int *__l = (int *)(((int)(tsl)+15)&~15); \ - *__l = -1; \ -}) +#define TSL_UNSET(tsl) (*(tsl) = -1) +#define TSL_INIT(tsl) TSL_UNSET(tsl) |