Archipelago » qemu

/*

 * common defines for all CPUs

 * 

 * Copyright (c) 2003 Fabrice Bellard

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 */

#ifndef CPU_DEFS_H

#define CPU_DEFS_H

#include "config.h"

#include <setjmp.h>

#include <inttypes.h>

#include "osdep.h"

#ifndef TARGET_LONG_BITS

#error TARGET_LONG_BITS must be defined before including this header

#endif

#if defined(__alpha__) || defined (__ia64__) || defined(__x86_64__)

#define HOST_LONG_BITS 64

#else

#define HOST_LONG_BITS 32

#endif

#ifndef TARGET_PHYS_ADDR_BITS 

#if TARGET_LONG_BITS >= HOST_LONG_BITS

#define TARGET_PHYS_ADDR_BITS TARGET_LONG_BITS

#else

#define TARGET_PHYS_ADDR_BITS HOST_LONG_BITS

#endif

#endif

#define TARGET_LONG_SIZE (TARGET_LONG_BITS / 8)

/* target_ulong is the type of a virtual address */

#if TARGET_LONG_SIZE == 4

typedef int32_t target_long;

typedef uint32_t target_ulong;

#elif TARGET_LONG_SIZE == 8

typedef int64_t target_long;

typedef uint64_t target_ulong;

#else

#error TARGET_LONG_SIZE undefined

#endif

/* target_phys_addr_t is the type of a physical address (its size can

   be different from 'target_ulong'). We have sizeof(target_phys_addr)

   = max(sizeof(unsigned long),

   sizeof(size_of_target_physical_address)) because we must pass a

   host pointer to memory operations in some cases */

#if TARGET_PHYS_ADDR_BITS == 32

typedef uint32_t target_phys_addr_t;

#elif TARGET_PHYS_ADDR_BITS == 64

typedef uint64_t target_phys_addr_t;

#else

#error TARGET_PHYS_ADDR_BITS undefined

#endif

#define HOST_LONG_SIZE (HOST_LONG_BITS / 8)

#define EXCP_INTERRUPT         256 /* async interruption */

#define EXCP_HLT        257 /* hlt instruction reached */

#define EXCP_DEBUG      258 /* cpu stopped after a breakpoint or singlestep */

#define MAX_BREAKPOINTS 32

#define CPU_TLB_SIZE 256

typedef struct CPUTLBEntry {

    /* bit 31 to TARGET_PAGE_BITS : virtual address 

       bit TARGET_PAGE_BITS-1..IO_MEM_SHIFT : if non zero, memory io

                                              zone number

       bit 3                      : indicates that the entry is invalid

       bit 2..0                   : zero

    */

    target_ulong address; 

    /* addend to virtual address to get physical address */

    target_phys_addr_t addend; 

} CPUTLBEntry;

#endif