198 lines
4.9 KiB
C
198 lines
4.9 KiB
C
/*-
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* Copyright (c) 1993 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: cpufunc.h,v 1.23 1994/09/16 11:22:33 jkh Exp $
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*/
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/*
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* Functions to provide access to special i386 instructions.
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* XXX - bezillions more are defined in locore.s but are not declared anywhere.
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*/
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#ifndef _MACHINE_CPUFUNC_H_
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#define _MACHINE_CPUFUNC_H_ 1
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <machine/spl.h>
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#ifdef __GNUC__
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static inline u_char
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inb(u_short port)
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{
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u_char data;
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__asm __volatile("inb %1,%0" : "=a" (data) : "d" (port));
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return data;
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}
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static inline u_short
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inw(u_short port)
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{
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u_short data;
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__asm __volatile("inw %1,%0" : "=a" (data) : "d" (port));
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return data;
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}
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static inline u_long
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inl(u_short port)
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{
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u_long data;
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__asm __volatile("inl %1,%0" : "=a" (data) : "d" (port));
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return data;
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}
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static inline void
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outb(u_short port, u_char val)
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{
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__asm __volatile("outb %0,%1" : :"a" (val), "d" (port));
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}
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static inline void
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outw(u_short port, u_short val)
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{
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__asm __volatile("outw %0,%1" : :"a" (val), "d" (port));
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}
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static inline void
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outl(u_short port, u_long val)
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{
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__asm __volatile("outl %0,%1" : :"a" (val), "d" (port));
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}
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static inline int bdb(void)
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{
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extern int bdb_exists;
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if (!bdb_exists)
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return (0);
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__asm("int $3");
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return (1);
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}
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static inline void
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disable_intr(void)
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{
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__asm __volatile("cli");
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}
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static inline void
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enable_intr(void)
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{
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__asm __volatile("sti");
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}
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static inline u_long
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read_eflags()
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{
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u_long ef;
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__asm __volatile("pushf; popl %0" : "=a" (ef));
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return(ef);
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}
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static inline void
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write_eflags(u_long ef)
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{
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__asm __volatile("pushl %0; popf" : : "a" ((u_long) ef));
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}
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static inline void
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pmap_update()
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{
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__asm __volatile("movl %%cr3, %%eax; movl %%eax, %%cr3" : : : "ax");
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}
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static inline u_long
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rcr2()
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{
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u_long data;
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__asm __volatile("movl %%cr2,%%eax" : "=a" (data));
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return data;
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}
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struct quehead {
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struct quehead *qh_link;
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struct quehead *qh_rlink;
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};
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static inline void
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insque(void *a, void *b)
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{
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register struct quehead *element = a, *head = b;
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element->qh_link = head->qh_link;
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head->qh_link = (struct quehead *)element;
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element->qh_rlink = (struct quehead *)head;
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((struct quehead *)(element->qh_link))->qh_rlink
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= (struct quehead *)element;
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}
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static inline void
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remque(void *a)
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{
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register struct quehead *element = a;
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((struct quehead *)(element->qh_link))->qh_rlink = element->qh_rlink;
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((struct quehead *)(element->qh_rlink))->qh_link = element->qh_link;
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element->qh_rlink = 0;
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}
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#else /* not __GNUC__ */
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extern void insque __P((void *, void *));
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extern void remque __P((void *));
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int bdb __P((void));
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void disable_intr __P((void));
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void enable_intr __P((void));
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u_char inb __P((u_int port));
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void outb __P((u_int port, u_int data)); /* XXX - incompat */
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#endif /* __GNUC__ */
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void load_cr0 __P((u_int cr0));
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u_int rcr0 __P((void));
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void load_cr3(u_long);
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u_long rcr3(void);
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extern void DELAY(int);
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void setidt __P((int, void (*)(), int, int));
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extern u_long kvtop(void *);
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extern void outsb(int /*u_short*/, void *, size_t);
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extern void outsw(int /*u_short*/, void *, size_t);
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extern void insw(int /*u_short*/, void *, size_t);
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extern void fillw(int /*u_short*/, void *, size_t);
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extern void filli(int, void *, size_t);
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#endif /* _MACHINE_CPUFUNC_H_ */
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