66 lines
1.7 KiB
ArmAsm
66 lines
1.7 KiB
ArmAsm
/*
|
|
* Copyright (c) 1996-1997 The University of Utah and the Computer Systems
|
|
* Laboratory at the University of Utah (CSL). All rights reserved.
|
|
*
|
|
* Permission to use, copy, modify and distribute this software is hereby
|
|
* granted provided that (1) source code retains these copyright, permission,
|
|
* and disclaimer notices, and (2) redistributions including binaries
|
|
* reproduce the notices in supporting documentation, and (3) all advertising
|
|
* materials mentioning features or use of this software display the following
|
|
* acknowledgement: ``This product includes software developed by the Computer
|
|
* Systems Laboratory at the University of Utah.''
|
|
*
|
|
* THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
|
|
* IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
|
|
* ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
|
*
|
|
* CSL requests users of this software to return to csl-dist@cs.utah.edu any
|
|
* improvements that they make and grant CSL redistribution rights.
|
|
*
|
|
* @(#)tsl_parisc.s 8.4 (Sleepycat) 1/18/97
|
|
*/
|
|
|
|
/*
|
|
* Spin locks for the PA-RISC. Based on Bob Wheeler's Mach implementation.
|
|
*/
|
|
.SPACE $TEXT$
|
|
.SUBSPA $CODE$
|
|
|
|
/*
|
|
* int tsl_set(tsl_t *tsl)
|
|
*
|
|
* Try to acquire a lock, return 1 if successful, 0 if not.
|
|
*/
|
|
.EXPORT tsl_set,ENTRY
|
|
tsl_set
|
|
.PROC
|
|
.CALLINFO FRAME=0,NO_CALLS
|
|
.ENTRY
|
|
ldo 15(%r26),%r26
|
|
depi 0,31,4,%r26
|
|
ldcws 0(%r26),%r28
|
|
subi,= 0,%r28,%r0
|
|
ldi 1,%r28
|
|
bv,n 0(%r2)
|
|
.EXIT
|
|
.PROCEND
|
|
|
|
|
|
/*
|
|
* void tsl_unset(tsl_t *tsl)
|
|
*
|
|
* Release a lock.
|
|
*/
|
|
.EXPORT tsl_unset,ENTRY
|
|
tsl_unset
|
|
.PROC
|
|
.CALLINFO FRAME=0,NO_CALLS
|
|
.ENTRY
|
|
ldo 15(%r26),%r26
|
|
ldi -1,%r19
|
|
depi 0,31,4,%r26
|
|
bv 0(%r2)
|
|
stw %r19,0(%r26)
|
|
.EXIT
|
|
.PROCEND
|