X-Git-Url: http://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=NeXT%2Fspl.h;fp=NeXT%2Fspl.h;h=120f48059407f6ce7f5d93e9f620439bcec6d2fb;hp=0000000000000000000000000000000000000000;hb=7554d5fef3f478ca0f9c8911522d7c1783989eae;hpb=f9e2af5a81ac29239cfa4ebd8dc2c40792eafcbb

diff --git a/NeXT/spl.h b/NeXT/spl.h
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+++ b/NeXT/spl.h
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+/*
+ *	File:	spl.h
+ *	Author:	Avadis Tevanian, Jr.
+ *
+ *	Define inline macros for spl routines.
+ *	
+ * HISTORY
+ *
+ * 14-May-90  Gregg Kellogg (gk) at NeXT
+ *	Changed SPLCLOCK from 6 to 3, as much scheduling code expects
+ *	splclock() == splsched().  Added splusclock().
+ *
+ * 19-Jun-89  Mike DeMoney (mike) at NeXT
+ *	Modified to allow spl assertions in spl_measured.h
+ */
+
+#ifndef	_KERNSERV_M68K_SPL_H_
+#define	_KERNSERV_M68K_SPL_H_
+
+#ifdef	KERNEL_BUILD
+#import <iplmeas.h>
+#else	KERNEL_BUILD
+/* #import <mach/features.h> */
+#endif	KERNEL_BUILD
+
+#import <bsd/m68k/psl.h>
+
+#if	NIPLMEAS && !defined(NO_IPLMEAS)
+#import <machdep/m68k/spl_measured.h>
+#endif	NIPLMEAS && !defined(NO_IPLMEAS)
+
+#ifndef	SPLU_MACRO
+
+#ifdef	ASSEMBLER
+#define	SPLU_MACRO(ipl) \
+	movw	sr,d0; \
+	movw	\#((ipl)*256 + 0x2000),sr;
+
+#define	splx(nsr) \
+	movw	sr,d0; \
+	movw	nsr,sr;
+
+#else	ASSEMBLER
+
+#define SPLU_MACRO(x) \
+({ register short ret; \
+	asm volatile ("movw	sr,%0" : "=dm" (ret)); \
+	asm volatile ("movw	%1,sr" : "=m" (*(char *)0): "Jdm" ((short)(x)*256+0x2000)); \
+	ret; \
+})
+
+#define splx(x) \
+({ register short ret; \
+	asm volatile ("movw	sr,%0" : "=dm" (ret)); \
+	asm volatile ("movw	%1,sr" : "=m" (*(char *)0): "Jdm" ((short)x)); \
+	ret; \
+})
+
+#endif	ASSEMBLER
+
+#define	SPLD_MACRO(ipl)	SPLU_MACRO(ipl)
+#define	spln(x)		splx(x)
+
+#endif	SPLU_MACRO
+
+#define ipltospl(ipl)	(SR_SUPER | ((ipl) << 8))
+
+/*
+ *	Define spls as the usual numbers (which should never be used
+ *	directly.
+ */
+
+#define spl0()	SPLD_MACRO(0)
+#define spl1()	SPLU_MACRO(1)
+#define spl2()	SPLU_MACRO(2)
+#define spl3()	SPLU_MACRO(3)
+#define spl4()	SPLU_MACRO(4)
+#define spl5()	SPLU_MACRO(5)
+#define spl6()	SPLU_MACRO(6)
+#define spl7()	SPLU_MACRO(7)
+
+/*
+ *	Define spl mnemonics.
+ */
+#define IPLHIGH		7
+#define IPLDMA		6
+#define IPLUSCLOCK	6
+#define IPLSCC		5
+#define IPLCLOCK	3
+#define IPLBIO		3
+#define IPLSCHED	3
+#define IPLIMP		3
+#define IPLVM		3
+#define IPLNET		2
+#define IPLTTY		1
+#define IPLSOFTCLOCK	1
+
+#define splhigh()	SPLU_MACRO(IPLHIGH)
+#define splusclock()	SPLU_MACRO(IPLUSCLOCK)
+#define spldma()	SPLU_MACRO(IPLDMA)
+#define splscc()	SPLU_MACRO(IPLSCC)
+#define splclock()	SPLU_MACRO(IPLCLOCK)
+#define splbio()	SPLU_MACRO(IPLBIO)
+#define splsched()	SPLU_MACRO(IPLSCHED)
+#define splimp()	SPLU_MACRO(IPLIMP)
+#define splvm()		SPLU_MACRO(IPLVM)
+#define splnet()	SPLU_MACRO(IPLNET)
+#define spltty()	SPLU_MACRO(IPLTTY)
+#define splsoftclock()	SPLU_MACRO(IPLSOFTCLOCK)
+
+#endif	_KERNSERV_M68K_SPL_H_