103 lines
2.6 KiB
C
103 lines
2.6 KiB
C
/* $NetBSD: psl.h,v 1.11 1996/11/30 00:33:49 is Exp $ */
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#ifndef _MACHINE_PSL_H_
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#define _MACHINE_PSL_H_
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#include <m68k/psl.h>
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#if defined(_KERNEL) && !defined(_LOCORE)
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#if 0
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#define _debug_spl(s) \
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({ \
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register int _spl_r; \
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\
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__asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
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"&=d" (_spl_r) : "di" (s)); \
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if ((_spl_r&PSL_IPL) > ((s)&PSL_IPL)&&((s)&PSL_IPL)!=PSL_IPL1) \
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printf ("%s:%d:spl(%d) ==> spl(%d)!!\n",__FILE__,__LINE__, \
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((PSL_IPL&_spl_r)>>8), ((PSL_IPL&(s))>>8)); \
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_spl_r; \
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})
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#else
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/*
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* Don't lower IPL below current IPL (unless new IPL is 6)
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*/
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#define _debug_spl(s) \
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({ \
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register int _spl_r; \
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\
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__asm __volatile ("clrl %0; movew sr,%0" : \
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"&=d" (_spl_r)); \
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if ((((s)&PSL_IPL) >= PSL_IPL6) || (_spl_r&PSL_IPL) < ((s)&PSL_IPL) || ((s)&PSL_IPL) <= PSL_IPL1) \
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__asm __volatile ("movew %0,sr" : : "di" (s)); \
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_spl_r; \
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})
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#endif
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#define _spl_no_check(s) \
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({ \
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register int _spl_r; \
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\
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__asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
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"&=d" (_spl_r) : "di" (s)); \
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_spl_r; \
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})
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#if defined (DEBUGXX) /* No workee */
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#define _spl _debug_spl
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#else
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#define _spl _spl_no_check
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#endif
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#define spl0() _spl(PSL_S|PSL_IPL0)
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#define spl1() _spl(PSL_S|PSL_IPL1)
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#define spl2() _spl(PSL_S|PSL_IPL2)
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#define spl3() _spl(PSL_S|PSL_IPL3)
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#define spl4() _spl(PSL_S|PSL_IPL4)
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#define spl5() _spl(PSL_S|PSL_IPL5)
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#define spl6() _spl(PSL_S|PSL_IPL6)
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#define spl7() _spl(PSL_S|PSL_IPL7)
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#define splnone() spl0()
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#define splsoftclock() spl1()
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#define splsoftnet() spl1()
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#define splbio() spl3()
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#define splnet() spl3()
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/*
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* spltty hack, idea by Jason Thorpe.
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* drivers which need it (at the present only drcom) raise the variable to
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* spl5 (the idea being that only ser.c really wants it below 5, and ser
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* and drcom will never be present at the same time).
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*
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* XXX ttyspl is statically initialized in drcom.c at the moment; should
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* be some driver independent file.
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*
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* XXX should ttyspl be volatile? I think not; it is intended to be set only
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* during xxx_attach() time, and will be used only later.
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* -is
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*/
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extern u_int16_t amiga_ttyspl;
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#define spltty() _spl(amiga_ttyspl)
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#define splimp() spltty() /* XXX for the full story, see i386 */
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#ifndef LEV6_DEFER
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#define splclock() spl6()
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#define splstatclock() spl6()
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#define splvm() spl6()
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#define splhigh() spl7()
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#define splsched() spl7()
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#else
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#define splclock() spl4()
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#define splstatclock() spl4()
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#define splvm() spl4()
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#define splhigh() spl4()
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#define splsched() spl4()
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#endif
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#define splx(s) _spl_no_check(s)
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#endif /* KERNEL && !_LOCORE */
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#endif /* _MACHINE_PSL_H_ */
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