2 /* From: NetBSD: param.h,v 1.20 1997/09/19 13:52:53 leo Exp */
5 * Copyright (c) 1988 University of Utah.
6 * Copyright (c) 1992, 1993
7 * The Regents of the University of California. All rights reserved.
9 * This code is derived from software contributed to Berkeley by
10 * the Systems Programming Group of the University of Utah Computer
11 * Science Department and Ralph Campbell.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * from: Utah $Hdr: machparam.h 1.11 89/08/14$
39 * @(#)param.h 8.1 (Berkeley) 6/10/93
43 * Machine dependent constants for the IA64.
46 * Round p (pointer or byte index) up to a correctly-aligned value for all
47 * data types (int, long, ...). The result is u_long and must be cast to
48 * any desired pointer type.
50 * ALIGNED_POINTER is a boolean macro that checks whether an address
51 * is valid to fetch data elements of type t from on this architecture.
52 * This does not reflect the optimal alignment, just the possibility
53 * (within reasonable limits).
57 #define _ALIGNBYTES 15
60 #define _ALIGN(p) (((u_long)(p) + _ALIGNBYTES) &~ _ALIGNBYTES)
62 #ifndef _ALIGNED_POINTER
63 #define _ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0)
70 #define _MACHINE_ARCH ia64
73 #ifndef _NO_NAMESPACE_POLLUTION
75 #ifndef _MACHINE_PARAM_H_
76 #define _MACHINE_PARAM_H_
79 #define MACHINE "ia64"
82 #define MACHINE_ARCH "ia64"
92 * Round p (pointer or byte index) up to a correctly-aligned value for all
93 * data types (int, long, ...). The result is u_long and must be cast to
94 * any desired pointer type.
96 * ALIGNED_POINTER is a boolean macro that checks whether an address
97 * is valid to fetch data elements of type t from on this architecture.
98 * This does not reflect the optimal alignment, just the possibility
99 * (within reasonable limits).
102 #define ALIGNBYTES _ALIGNBYTES
103 #define ALIGN(p) _ALIGN(p)
104 #define ALIGNED_POINTER(p,t) _ALIGNED_POINTER(p,t)
106 #ifndef LOG2_PAGE_SIZE
107 #define LOG2_PAGE_SIZE 13 /* 8K pages by default. */
109 #define PAGE_SHIFT (LOG2_PAGE_SIZE)
110 #define PAGE_SIZE (1<<(LOG2_PAGE_SIZE))
111 #define PAGE_MASK (PAGE_SIZE-1)
112 #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
117 /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */
118 #define SSIZE 1 /* initial stack size/NBPG */
119 #define SINCR 1 /* increment of stack/NBPG */
122 #define KSTACK_PAGES 4 /* pages of kernel stack */
124 #define KSTACK_GUARD_PAGES 0 /* pages of kstack guard; 0 disables */
127 * Mach derived conversion macros
129 #define round_page(x) ((((unsigned long)(x)) + PAGE_MASK) & ~(PAGE_MASK))
130 #define trunc_page(x) ((unsigned long)(x) & ~(PAGE_MASK))
132 #define atop(x) ((unsigned long)(x) >> PAGE_SHIFT)
133 #define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT)
135 #define ia64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT)
136 #define ia64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT)
138 #define pgtok(x) ((x) * (PAGE_SIZE / 1024))
140 #endif /* !_MACHINE_PARAM_H_ */
141 #endif /* !_NO_NAMESPACE_POLLUTION */