1 /* $OpenBSD: cpu.h,v 1.7 2001/07/09 01:35:32 mickey Exp $ */ 2 /* $NetBSD: cpu.h,v 1.1 1996/09/30 16:34:21 ws Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 6 * Copyright (C) 1995, 1996 TooLs GmbH. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by TooLs GmbH. 20 * 4. The name of TooLs GmbH may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 29 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 31 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 32 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 #ifndef _MACHINE_CPU_H_ 35 #define _MACHINE_CPU_H_ 36 37 #include <machine/frame.h> 38 39 #include <machine/psl.h> 40 41 #define CLKF_USERMODE(frame) (((frame)->srr1 & PSL_PR) != 0) 42 #define CLKF_BASEPRI(frame) ((frame)->pri == 0) 43 #define CLKF_PC(frame) ((frame)->srr0) 44 #define CLKF_INTR(frame) ((frame)->depth != 0) 45 46 #define cpu_swapout(p) 47 #define cpu_wait(p) 48 49 void child_return __P((struct proc *)); 50 void delay __P((unsigned)); 51 #define DELAY(n) delay(n) 52 53 extern volatile int want_resched; 54 extern volatile int astpending; 55 56 #define need_resched() (want_resched = 1, astpending = 1) 57 #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, astpending = 1) 58 #define signotify(p) (astpending = 1) 59 60 #define CACHELINESIZE 32 /* For now XXX */ 61 62 static __inline void 63 syncicache(void *from, int len) 64 { 65 int l = len; 66 char *p = from; 67 68 do { 69 __asm__ __volatile__ ("dcbst 0,%0" :: "r"(p)); 70 p += CACHELINESIZE; 71 } while ((l -= CACHELINESIZE) > 0); 72 __asm__ __volatile__ ("sync"); 73 p = from; 74 l = len; 75 do { 76 __asm__ __volatile__ ("icbi 0,%0" :: "r"(p)); 77 p += CACHELINESIZE; 78 } while ((l -= CACHELINESIZE) > 0); 79 __asm__ __volatile__ ("isync"); 80 } 81 82 extern char *bootpath; 83 84 #endif /* _MACHINE_CPU_H_ */ 85