2 * Copyright (c) 2001 David E. O'Brien
3 * Copyright (c) 1990 The Regents of the University of California.
6 * This code is derived from software contributed to Berkeley by
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
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 the University of
20 * California, Berkeley and its contributors.
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: @(#)param.h 5.8 (Berkeley) 6/28/91
42 * Machine dependent constants for PowerPC (32-bit only currently)
46 * Round p (pointer or byte index) up to a correctly-aligned value
47 * for all data types (int, long, ...). The result is unsigned int
48 * and must be cast to any desired pointer type.
51 #define _ALIGNBYTES (sizeof(int) - 1)
54 #define _ALIGN(p) (((unsigned)(p) + _ALIGNBYTES) & ~_ALIGNBYTES)
57 #ifndef _NO_NAMESPACE_POLLUTION
59 #ifndef _MACHINE_PARAM_H_
60 #define _MACHINE_PARAM_H_
63 #define MACHINE "powerpc"
66 #define MACHINE_ARCH "powerpc"
68 #define MID_MACHINE MID_POWERPC
70 #if defined(SMP) || defined(KLD_MODULE)
76 #define ALIGNBYTES _ALIGNBYTES
77 #define ALIGN(p) _ALIGN(p)
80 #define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */
81 #define PAGE_MASK (PAGE_SIZE - 1)
82 #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
85 #define KSTACK_PAGES 4 /* includes pcb */
87 #define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */
88 #define USPACE (KSTACK_PAGES * PAGE_SIZE) /* total size of pcb */
91 * Mach derived conversion macros
93 #define trunc_page(x) ((unsigned long)(x) & ~(PAGE_MASK))
94 #define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK)
95 #define trunc_4mpage(x) ((unsigned)(x) & ~PDRMASK)
96 #define round_4mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK)
98 #define atop(x) ((unsigned long)(x) >> PAGE_SHIFT)
99 #define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT)
101 #define powerpc_btop(x) ((unsigned)(x) >> PAGE_SHIFT)
102 #define powerpc_ptob(x) ((unsigned)(x) << PAGE_SHIFT)
104 #define pgtok(x) ((x) * (PAGE_SIZE / 1024))
106 #endif /* !_MACHINE_PARAM_H_ */
107 #endif /* !_NO_NAMESPACE_POLLUTION */