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  * 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 #ifndef _MACH_PPC_VM_PARAM_H_
  26 #define _MACH_PPC_VM_PARAM_H_
  27
  28 #define BYTE_SIZE       8       /* byte size in bits */
  29
  30 #define PPC_PGBYTES     4096    /* bytes per ppc page */
  31 #define PPC_PGSHIFT     12      /* number of bits to shift for pages */
  32
  33 #define VM_MIN_ADDRESS  ((vm_offset_t) 0)
  34 #define VM_MAX_ADDRESS  ((vm_offset_t) 0xfffff000U)
  35
  36 #define VM_MIN_KERNEL_ADDRESS   ((vm_offset_t) 0x00001000)
  37
  38 /* We map the kernel using only SR0,SR1,SR2,SR3 leaving segments alone */
  39 #define VM_MAX_KERNEL_ADDRESS   ((vm_offset_t) 0x3fffffff)
  40
  41 #define USER_STACK_END  ((vm_offset_t) 0xffff0000U)
  42
  43 #define ppc_round_page(x)       ((((unsigned)(x)) + PPC_PGBYTES - 1) & \
  44                                         ~(PPC_PGBYTES-1))
  45 #define ppc_trunc_page(x)       (((unsigned)(x)) & ~(PPC_PGBYTES-1))
  46
  47
  48 #define KERNEL_STACK_SIZE       (4 * PPC_PGBYTES)
  49 #define INTSTACK_SIZE           (5 * PPC_PGBYTES)
  50
  51 #endif  /* _PPC_VM_PARAM_H_ */