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Define macros to read & write Ancillary State registers.

This commit is contained in:
pk 1999-01-19 23:05:52 +00:00
parent 66cd211961
commit 88993b57d9
1 changed files with 14 additions and 1 deletions
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15
sys/arch/sparc/sparc/asm.h
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@ -1,4 +1,4 @@
/* $NetBSD: asm.h,v 1.6 1998/09/27 14:32:14 pk Exp $ */
/* $NetBSD: asm.h,v 1.7 1999/01/19 23:05:52 pk Exp $ */
/*
* Copyright (c) 1992, 1993
@ -128,3 +128,16 @@
__asm __volatile("ldstub [%1],%0" : "=r" (_v) : "r" (loc) : "memory"); \
_v; \
})
/* read ancillary state register */
#define rdasr(asr) _rdasr(asr)
#define _rdasr(asr) ({ \
register int _rdasr_v; \
__asm __volatile("rd %%asr" #asr ",%0" : "=r" (_rdasr_v)); \
})
/* write ancillary state register */
#define wrasr(value, asr) _wrasr(value, asr)
#define _wrasr(value, asr) ({ \
__asm __volatile("wr %0,%%asr" #asr : : "r" ((int)(value))); \
})