mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-08 04:27:37 +00:00
37 lines
1.5 KiB
Plaintext
37 lines
1.5 KiB
Plaintext
|
/*
|
||
|
|
* @(#)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.
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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. We could
|
||
|
|
* use the "aligned" attribute in GCC but that doesn't work for stack variables.
|
||
|
|
*/
|
||
|
|
#define TSL_SET(tsl) ({ \
|
||
|
|
register tsl_t *__l = (tsl); \
|
||
|
|
int __r; \
|
||
|
|
asm volatile("ldcws 0(%1),%0" : "=r" (__r) : "r" (__l)); \
|
||
|
|
__r & 1; \
|
||
|
|
})
|
||
|
|
|
||
|
|
#define TSL_UNSET(tsl) (*(tsl) = -1)
|
||
|
|
#define TSL_INIT(tsl) TSL_UNSET(tsl)
|