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Diffstat (limited to 'i386/util/vm_param.h')
-rw-r--r-- | i386/util/vm_param.h | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/i386/util/vm_param.h b/i386/util/vm_param.h deleted file mode 100644 index c24ed07..0000000 --- a/i386/util/vm_param.h +++ /dev/null @@ -1,89 +0,0 @@ -/* - * Mach Operating System - * Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University - * All Rights Reserved. - * - * Permission to use, copy, modify and distribute this software and its - * documentation is hereby granted, provided that both the copyright - * notice and this permission notice appear in all copies of the - * software, derivative works or modified versions, and any portions - * thereof, and that both notices appear in supporting documentation. - * - * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" - * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR - * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. - * - * Carnegie Mellon requests users of this software to return to - * - * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU - * School of Computer Science - * Carnegie Mellon University - * Pittsburgh PA 15213-3890 - * - * any improvements or extensions that they make and grant Carnegie Mellon - * the rights to redistribute these changes. - */ -/* - * File: vm_param.h - * Author: Avadis Tevanian, Jr. - * Date: 1985 - * - * I386 machine dependent virtual memory parameters. - * Most of the declarations are preceeded by I386_ (or i386_) - * which is OK because only I386 specific code will be using - * them. - */ - -#ifndef _I386_KERNEL_UTIL_VM_PARAM_H_ -#define _I386_KERNEL_UTIL_VM_PARAM_H_ - -#include <mach/vm_param.h> - - -/* This variable is expected always to contain - the kernel virtual address at which physical memory is mapped. - It may change as paging is turned on or off. */ -extern vm_offset_t phys_mem_va; - - -/* Calculate a kernel virtual address from a physical address. */ -#define phystokv(pa) ((vm_offset_t)(pa) + phys_mem_va) - -/* Same, but in reverse. - This only works for the region of kernel virtual addresses - that directly map physical addresses. */ -#define kvtophys(va) ((vm_offset_t)(va) - phys_mem_va) - - -/* This variable contains the kernel virtual address - corresponding to linear address 0. - In the absence of paging, - linear addresses are always the same as physical addresses. */ -#ifndef linear_base_va -#define linear_base_va phys_mem_va -#endif - -/* Convert between linear and kernel virtual addresses. */ -#define lintokv(la) ((vm_offset_t)(la) + linear_base_va) -#define kvtolin(va) ((vm_offset_t)(va) - linear_base_va) - - -/* This variable keeps track of where in physical memory - our boot image was loaded. - It holds the physical address - corresponding to the boot image's virtual address 0. - When paging is disabled, this is simply -phys_mem_va. - However, when paging is enabled, - phys_mem_va points to the place physical memory is mapped into exec space, - and has no relationship to where in physical memory the boot image is. - Thus, this variable always contains the location of the boot image - whether or not paging is enabled. */ -extern vm_offset_t boot_image_pa; - -/* Code segment we originally had when we started in real mode. - Always equal to boot_image_pa >> 4. */ -extern unsigned short real_cs; - - - -#endif /* _I386_KERNEL_UTIL_VM_PARAM_H_ */ |