osfmk/mach/ppc/vm_param.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * @OSF_COPYRIGHT@
  27  */
  28 #ifndef _MACH_PPC_VM_PARAM_H_
  29 #define _MACH_PPC_VM_PARAM_H_
  30
  31 #define BYTE_SIZE       8       /* byte size in bits */
  32
  33 #define PPC_PGBYTES     4096    /* bytes per ppc page */
  34 #define PPC_PGSHIFT     12      /* number of bits to shift for pages */
  35
  36 #define VM_MIN_ADDRESS  ((vm_offset_t) 0)
  37 #define VM_MAX_ADDRESS  ((vm_offset_t) 0xfffff000U)
  38
  39 #define VM_MIN_KERNEL_ADDRESS   ((vm_offset_t) 0x00001000)
  40
  41 /* We map the kernel using only SR0,SR1,SR2,SR3 leaving segments alone */
  42 #define VM_MAX_KERNEL_ADDRESS   ((vm_offset_t) 0x3fffffff)
  43
  44 #define USER_STACK_END  ((vm_offset_t) 0xffff0000U)
  45
  46 #define ppc_round_page(x)       ((((unsigned)(x)) + PPC_PGBYTES - 1) & \
  47                                         ~(PPC_PGBYTES-1))
  48 #define ppc_trunc_page(x)       (((unsigned)(x)) & ~(PPC_PGBYTES-1))
  49
  50
  51 #define KERNEL_STACK_SIZE       (4 * PPC_PGBYTES)
  52 #define INTSTACK_SIZE           (5 * PPC_PGBYTES)
  53
  54 #endif  /* _PPC_VM_PARAM_H_ */