target/i386/cpu-param.h

   1 /*
   2  * i386 cpu parameters for qemu.
   3  *
   4  * Copyright (c) 2003 Fabrice Bellard
   5  * SPDX-License-Identifier: LGPL-2.0+
   6  */
   7
   8 #ifndef I386_CPU_PARAM_H
   9 #define I386_CPU_PARAM_H
  10
  11 #ifdef TARGET_X86_64
  12 # define TARGET_LONG_BITS             64
  13 # define TARGET_PHYS_ADDR_SPACE_BITS  52
  14 /*
  15  * ??? This is really 48 bits, sign-extended, but the only thing
  16  * accessible to userland with bit 48 set is the VSYSCALL, and that
  17  * is handled via other mechanisms.
  18  */
  19 # define TARGET_VIRT_ADDR_SPACE_BITS  47
  20 #else
  21 # define TARGET_LONG_BITS             32
  22 # define TARGET_PHYS_ADDR_SPACE_BITS  36
  23 # define TARGET_VIRT_ADDR_SPACE_BITS  32
  24 #endif
  25 #define TARGET_PAGE_BITS 12
  26
  27 #endif