target/ppc/cpu-param.h

   1 /*
   2  * PowerPC cpu parameters for qemu.
   3  *
   4  * Copyright (c) 2007 Jocelyn Mayer
   5  * SPDX-License-Identifier: LGPL-2.0-or-later
   6  */
   7
   8 #ifndef PPC_CPU_PARAM_H
   9 #define PPC_CPU_PARAM_H
  10
  11 #ifdef TARGET_PPC64
  12 # define TARGET_LONG_BITS 64
  13 /*
  14  * Note that the official physical address space bits is 62-M where M
  15  * is implementation dependent.  I've not looked up M for the set of
  16  * cpus we emulate at the system level.
  17  */
  18 #define TARGET_PHYS_ADDR_SPACE_BITS 62
  19 /*
  20  * Note that the PPC environment architecture talks about 80 bit virtual
  21  * addresses, with segmentation.  Obviously that's not all visible to a
  22  * single process, which is all we're concerned with here.
  23  */
  24 # ifdef TARGET_ABI32
  25 #  define TARGET_VIRT_ADDR_SPACE_BITS 32
  26 # else
  27 #  define TARGET_VIRT_ADDR_SPACE_BITS 64
  28 # endif
  29 #else
  30 # define TARGET_LONG_BITS 32
  31 # define TARGET_PHYS_ADDR_SPACE_BITS 36
  32 # define TARGET_VIRT_ADDR_SPACE_BITS 32
  33 #endif
  34
  35 #ifdef CONFIG_USER_ONLY
  36 /* Allow user-only to vary page size from 4k */
  37 # define TARGET_PAGE_BITS_VARY
  38 # define TARGET_PAGE_BITS_MIN 12
  39 #else
  40 # define TARGET_PAGE_BITS 12
  41 #endif
  42
  43 #define TCG_GUEST_DEFAULT_MO 0
  44
  45 #endif