stc.h

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#ifndef	__STC_H
#define	__STC_H

#define	get_stc()		(((regs0->stc_15_0))	    | \
				 ((regs0->stc_31_16) << 16) | \
				 ((UINT64)(regs0->stc_32) << 32))

#ifdef SAFER_STC_UPDATE
/*
**	reset STC low nibbles to 0 and avoid meta-stability
*/
#define	set_stc(stc)		(regs0->stc_15_0  = 0,				\
				 regs0->stc_31_16 = 0,				\
				 regs0->stc_32    = (((stc) >> 32) & 0x0001)	\
				 regs0->stc_31_16 = (((stc) >> 16) & 0xffff),	\
				 regs0->stc_15_0  = ((stc) & 0xffff),)
#else
#define	set_stc(stc)		(regs0->stc_15_0  = ((stc) & 0xffff),		\
				 regs0->stc_31_16 = (((stc) >> 16) & 0xffff),	\
				 regs0->stc_32    = (((stc) >> 32) & 0x0001))
#endif

#define	reset_rtc()		(regs0->rtc_31_16 = 0)
#define	reset_stc()		set_stc((INT64)0)

#define get_rtc()		(((regs0->rtc_15_0)) | ((regs0->rtc_31_16) << 16))

#endif	__STC_H