| | 1 | /* |
| | 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * The contents of this file constitute Original Code as defined in and |
| | 7 | * are subject to the Apple Public Source License Version 1.1 (the |
| | 8 | * "License"). You may not use this file except in compliance with the |
| | 9 | * License. Please obtain a copy of the License at |
| | 10 | * http://www.apple.com/publicsource and read it before using this file. |
| | 11 | * |
| | 12 | * This Original Code and all software distributed under the License are |
| | 13 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 16 | * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the |
| | 17 | * License for the specific language governing rights and limitations |
| | 18 | * under the License. |
| | 19 | * |
| | 20 | * @APPLE_LICENSE_HEADER_END@ |
| | 21 | */ |
| | 22 | /* |
| | 23 | * @OSF_COPYRIGHT@ |
| | 24 | */ |
| | 25 | /* |
| | 26 | * Copyright (c) 1990, 1991 The University of Utah and |
| | 27 | * the Center for Software Science at the University of Utah (CSS). |
| | 28 | * All rights reserved. |
| | 29 | * |
| | 30 | * Permission to use, copy, modify and distribute this software is hereby |
| | 31 | * granted provided that (1) source code retains these copyright, permission, |
| | 32 | * and disclaimer notices, and (2) redistributions including binaries |
| | 33 | * reproduce the notices in supporting documentation, and (3) all advertising |
| | 34 | * materials mentioning features or use of this software display the following |
| | 35 | * acknowledgement: ``This product includes software developed by the Center |
| | 36 | * for Software Science at the University of Utah.'' |
| | 37 | * |
| | 38 | * THE UNIVERSITY OF UTAH AND CSS ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS |
| | 39 | * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSS DISCLAIM ANY LIABILITY OF |
| | 40 | * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. |
| | 41 | * |
| | 42 | * CSS requests users of this software to return to css-dist@cs.utah.edu any |
| | 43 | * improvements that they make and grant CSS redistribution rights. |
| | 44 | * |
| | 45 | * Utah $Hdr: machparam.h 1.7 92/05/22$ |
| | 46 | */ |
| | 47 | |
| | 48 | #ifndef _PPC_MACHPARAM_H_ |
| | 49 | #define _PPC_MACHPARAM_H_ |
| | 50 | |
| | 51 | /* |
| | 52 | * Machine dependent constants for ppc. |
| | 53 | * Added as needed (for device drivers). |
| | 54 | */ |
| | 55 | #define NBPG 4096 /* bytes/page */ |
| | 56 | #define PGSHIFT 12 /* LOG2(NBPG) */ |
| | 57 | |
| | 58 | #define DEV_BSHIFT 10 /* log2(DEV_BSIZE) */ |
| | 59 | |
| | 60 | /* |
| | 61 | * Disk devices do all IO in 1024-byte blocks. |
| | 62 | */ |
| | 63 | #define DEV_BSIZE 1024 |
| | 64 | |
| | 65 | #define btop(x) ((x)>>PGSHIFT) |
| | 66 | #define ptob(x) ((x)<<PGSHIFT) |
| | 67 | |
| | 68 | /* Clicks to disk blocks */ |
| | 69 | #define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT)) |
| | 70 | |
| | 71 | /* Disk blocks to clicks */ |
| | 72 | #define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT)) |
| | 73 | |
| | 74 | /* clicks to bytes */ |
| | 75 | #define ctob(x) ((x)<<PGSHIFT) |
| | 76 | |
| | 77 | /* bytes to clicks */ |
| | 78 | #define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT) |
| | 79 | |
| | 80 | #endif /* _PPC_MACHPARAM_H_ */ |
projects / apple / xnu.git / blame_incremental