cpufunc.h revision 3102
1/*- 2 * Copyright (c) 1993 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * 34 * Portions: 35 * Copyright (c) 1993 Charles Hannum. 36 * All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by Charles Hannum. 49 * 4. The name of the author may not be used to endorse or promote products 50 * derived from this software without specific prior written permission 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 53 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 54 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 55 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 56 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 57 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 61 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 * 63 * 64 * $Id: cpufunc.h,v 1.26 1994/09/25 20:03:41 davidg Exp $ 65 */ 66 67 68/* 69 * Functions to provide access to special i386 instructions. 70 * XXX - bezillions more are defined in locore.s but are not declared anywhere. 71 */ 72 73#ifndef _MACHINE_CPUFUNC_H_ 74#define _MACHINE_CPUFUNC_H_ 1 75 76#include <sys/cdefs.h> 77#include <sys/types.h> 78 79#include <machine/spl.h> 80 81#ifdef __GNUC__ 82 83static __inline void 84insb(u_short port, void *addr, int cnt) 85{ 86 __asm __volatile("cld;repne;insb" : 87 : "d" (port), "D" (addr), "c" (cnt) : "%edi", "%ecx", "memory"); 88} 89 90static __inline void 91insw(u_short port, void *addr, int cnt) 92{ 93 __asm __volatile("cld;repne;insw" : 94 : "d" (port), "D" (addr), "c" (cnt) : "%edi", "%ecx", "memory"); 95} 96 97static __inline void 98insl(u_short port, void *addr, int cnt) 99{ 100 __asm __volatile("cld;repne;insl" : 101 : "d" (port), "D" (addr), "c" (cnt) : "%edi", "%ecx", "memory"); 102} 103 104static __inline void 105outsb(u_short port, void *addr, int cnt) 106{ 107 __asm __volatile("cld;repne;outsb" : 108 : "d" (port), "S" (addr), "c" (cnt) : "%esi", "%ecx"); 109} 110 111static __inline void 112outsw(u_short port, void *addr, int cnt) 113{ 114 __asm __volatile("cld;repne;outsw" : 115 : "d" (port), "S" (addr), "c" (cnt) : "%esi", "%ecx"); 116} 117 118static __inline void 119outsl(u_short port, void *addr, int cnt) 120{ 121 __asm __volatile("cld;repne;outsl" : 122 : "d" (port), "S" (addr), "c" (cnt) : "%esi", "%ecx"); 123} 124 125static inline u_char 126inb(u_short port) 127{ 128 u_char data; 129 130 __asm __volatile("inb %1,%0" : "=a" (data) : "d" (port)); 131 return data; 132} 133 134static inline u_short 135inw(u_short port) 136{ 137 u_short data; 138 139 __asm __volatile("inw %1,%0" : "=a" (data) : "d" (port)); 140 return data; 141} 142 143static inline u_long 144inl(u_short port) 145{ 146 u_long data; 147 148 __asm __volatile("inl %1,%0" : "=a" (data) : "d" (port)); 149 return data; 150} 151 152static inline void 153outb(u_short port, u_char val) 154{ 155 __asm __volatile("outb %0,%1" : :"a" (val), "d" (port)); 156} 157 158static inline void 159outw(u_short port, u_short val) 160{ 161 __asm __volatile("outw %0,%1" : :"a" (val), "d" (port)); 162} 163 164static inline void 165outl(u_short port, u_long val) 166{ 167 __asm __volatile("outl %0,%1" : :"a" (val), "d" (port)); 168} 169 170static inline int bdb(void) 171{ 172 extern int bdb_exists; 173 174 if (!bdb_exists) 175 return (0); 176 __asm("int $3"); 177 return (1); 178} 179 180static inline void 181disable_intr(void) 182{ 183 __asm __volatile("cli"); 184} 185 186static inline void 187enable_intr(void) 188{ 189 __asm __volatile("sti"); 190} 191 192static inline u_long 193read_eflags() 194{ 195 u_long ef; 196 __asm __volatile("pushf; popl %0" : "=a" (ef)); 197 return(ef); 198} 199 200static inline void 201write_eflags(u_long ef) 202{ 203 __asm __volatile("pushl %0; popf" : : "a" ((u_long) ef)); 204} 205 206static inline void 207pmap_update() 208{ 209 __asm __volatile("movl %%cr3, %%eax; movl %%eax, %%cr3" : : : "ax"); 210} 211 212static inline u_long 213rcr2() 214{ 215 u_long data; 216 __asm __volatile("movl %%cr2,%%eax" : "=a" (data)); 217 return data; 218} 219 220struct quehead { 221 struct quehead *qh_link; 222 struct quehead *qh_rlink; 223}; 224 225static inline void 226insque(void *a, void *b) 227{ 228 register struct quehead *element = a, *head = b; 229 element->qh_link = head->qh_link; 230 head->qh_link = (struct quehead *)element; 231 element->qh_rlink = (struct quehead *)head; 232 ((struct quehead *)(element->qh_link))->qh_rlink 233 = (struct quehead *)element; 234} 235 236static inline void 237remque(void *a) 238{ 239 register struct quehead *element = a; 240 ((struct quehead *)(element->qh_link))->qh_rlink = element->qh_rlink; 241 ((struct quehead *)(element->qh_rlink))->qh_link = element->qh_link; 242 element->qh_rlink = 0; 243} 244 245#else /* not __GNUC__ */ 246extern void insque __P((void *, void *)); 247extern void remque __P((void *)); 248 249int bdb __P((void)); 250void disable_intr __P((void)); 251void enable_intr __P((void)); 252u_char inb __P((u_int port)); 253void outb __P((u_int port, u_int data)); /* XXX - incompat */ 254 255#endif /* __GNUC__ */ 256 257void load_cr0 __P((u_int cr0)); 258u_int rcr0 __P((void)); 259void load_cr3(u_long); 260u_long rcr3(void); 261extern void DELAY(int); 262 263void setidt __P((int, void (*)(), int, int)); 264extern u_long kvtop(void *); 265extern void fillw(int /*u_short*/, void *, size_t); 266extern void filli(int, void *, size_t); 267 268#endif /* _MACHINE_CPUFUNC_H_ */ 269