cpu-defs.h

   1 /*
   2  * common defines for all CPUs
   3  *
   4  * Copyright (c) 2003 Fabrice Bellard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 #ifndef CPU_DEFS_H
  21 #define CPU_DEFS_H
  22
  23 #include "config.h"
  24 #include <setjmp.h>
  25 #include <inttypes.h>
  26 #include "osdep.h"
  27
  28 #ifndef TARGET_LONG_BITS
  29 #error TARGET_LONG_BITS must be defined before including this header
  30 #endif
  31
  32 #if defined(__alpha__) || defined (__ia64__) || defined(__x86_64__)
  33 #define HOST_LONG_BITS 64
  34 #else
  35 #define HOST_LONG_BITS 32
  36 #endif
  37
  38 #ifndef TARGET_PHYS_ADDR_BITS
  39 #if TARGET_LONG_BITS >= HOST_LONG_BITS
  40 #define TARGET_PHYS_ADDR_BITS TARGET_LONG_BITS
  41 #else
  42 #define TARGET_PHYS_ADDR_BITS HOST_LONG_BITS
  43 #endif
  44 #endif
  45
  46 #define TARGET_LONG_SIZE (TARGET_LONG_BITS / 8)
  47
  48 /* target_ulong is the type of a virtual address */
  49 #if TARGET_LONG_SIZE == 4
  50 typedef int32_t target_long;
  51 typedef uint32_t target_ulong;
  52 #elif TARGET_LONG_SIZE == 8
  53 typedef int64_t target_long;
  54 typedef uint64_t target_ulong;
  55 #else
  56 #error TARGET_LONG_SIZE undefined
  57 #endif
  58
  59 /* target_phys_addr_t is the type of a physical address (its size can
  60    be different from 'target_ulong'). We have sizeof(target_phys_addr)
  61    = max(sizeof(unsigned long),
  62    sizeof(size_of_target_physical_address)) because we must pass a
  63    host pointer to memory operations in some cases */
  64
  65 #if TARGET_PHYS_ADDR_BITS == 32
  66 typedef uint32_t target_phys_addr_t;
  67 #elif TARGET_PHYS_ADDR_BITS == 64
  68 typedef uint64_t target_phys_addr_t;
  69 #else
  70 #error TARGET_PHYS_ADDR_BITS undefined
  71 #endif
  72
  73 #define HOST_LONG_SIZE (HOST_LONG_BITS / 8)
  74
  75 #define EXCP_INTERRUPT  256 /* async interruption */
  76 #define EXCP_HLT        257 /* hlt instruction reached */
  77 #define EXCP_DEBUG      258 /* cpu stopped after a breakpoint or singlestep */
  78
  79 #define MAX_BREAKPOINTS 32
  80
  81 #define CPU_TLB_SIZE 256
  82
  83 typedef struct CPUTLBEntry {
  84     /* bit 31 to TARGET_PAGE_BITS : virtual address
  85        bit TARGET_PAGE_BITS-1..IO_MEM_SHIFT : if non zero, memory io
  86                                               zone number
  87        bit 3                      : indicates that the entry is invalid
  88        bit 2..0                   : zero
  89     */
  90     target_ulong address;
  91     /* addend to virtual address to get physical address */
  92     target_phys_addr_t addend;
  93 } CPUTLBEntry;
  94
  95 #endif