root/trunk/src/recompiler/cpu-all.h

/*
 * defines common to all virtual 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
 */

/*
 * Sun LGPL Disclaimer: For the avoidance of doubt, except that if any license choice
 * other than GPL or LGPL is available it will apply instead, Sun elects to use only
 * the Lesser General Public License version 2.1 (LGPLv2) at this time for any software where
 * a choice of LGPL license versions is made available with the language indicating
 * that LGPLv2 or any later version may be used, or where a choice of which version
 * of the LGPL is applied is otherwise unspecified.
 */
#ifndef CPU_ALL_H
#define CPU_ALL_H

#ifdef VBOX
# ifndef LOG_GROUP
#  include <VBox/log.h>
#  define LOG_GROUP LOG_GROUP_REM
# endif
# include <VBox/pgm.h> /* PGM_DYNAMIC_RAM_ALLOC */
#endif

#if defined(__arm__) || defined(__sparc__)
#define WORDS_ALIGNED
#endif

/* some important defines:
 *
 * WORDS_ALIGNED : if defined, the host cpu can only make word aligned
 * memory accesses.
 *
 * WORDS_BIGENDIAN : if defined, the host cpu is big endian and
 * otherwise little endian.
 *
 * (TARGET_WORDS_ALIGNED : same for target cpu (not supported yet))
 *
 * TARGET_WORDS_BIGENDIAN : same for target cpu
 */

#include "bswap.h"

#if defined(WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
#define BSWAP_NEEDED
#endif

#ifdef BSWAP_NEEDED

static inline uint16_t tswap16(uint16_t s)
{
    return bswap16(s);
}

static inline uint32_t tswap32(uint32_t s)
{
    return bswap32(s);
}

static inline uint64_t tswap64(uint64_t s)
{
    return bswap64(s);
}

static inline void tswap16s(uint16_t *s)
{
    *s = bswap16(*s);
}

static inline void tswap32s(uint32_t *s)
{
    *s = bswap32(*s);
}

static inline void tswap64s(uint64_t *s)
{
    *s = bswap64(*s);
}

#else

static inline uint16_t tswap16(uint16_t s)
{
    return s;
}

static inline uint32_t tswap32(uint32_t s)
{
    return s;
}

static inline uint64_t tswap64(uint64_t s)
{
    return s;
}

static inline void tswap16s(uint16_t *s)
{
}

static inline void tswap32s(uint32_t *s)
{
}

static inline void tswap64s(uint64_t *s)
{
}

#endif

#if TARGET_LONG_SIZE == 4
#define tswapl(s) tswap32(s)
#define tswapls(s) tswap32s((uint32_t *)(s))
#define bswaptls(s) bswap32s(s)
#else
#define tswapl(s) tswap64(s)
#define tswapls(s) tswap64s((uint64_t *)(s))
#define bswaptls(s) bswap64s(s)
#endif

/* NOTE: arm FPA is horrible as double 32 bit words are stored in big
   endian ! */
typedef union {
    float64 d;
#if defined(WORDS_BIGENDIAN) \
    || (defined(__arm__) && !defined(__VFP_FP__) && !defined(CONFIG_SOFTFLOAT))
    struct {
        uint32_t upper;
        uint32_t lower;
    } l;
#else
    struct {
        uint32_t lower;
        uint32_t upper;
    } l;
#endif
    uint64_t ll;
} CPU_DoubleU;

/* CPU memory access without any memory or io remapping */

/*
 * the generic syntax for the memory accesses is:
 *
 * load: ld{type}{sign}{size}{endian}_{access_type}(ptr)
 *
 * store: st{type}{size}{endian}_{access_type}(ptr, val)
 *
 * type is:
 * (empty): integer access
 *   f    : float access
 *
 * sign is:
 * (empty): for floats or 32 bit size
 *   u    : unsigned
 *   s    : signed
 *
 * size is:
 *   b: 8 bits
 *   w: 16 bits
 *   l: 32 bits
 *   q: 64 bits
 *
 * endian is:
 * (empty): target cpu endianness or 8 bit access
 *   r    : reversed target cpu endianness (not implemented yet)
 *   be   : big endian (not implemented yet)
 *   le   : little endian (not implemented yet)
 *
 * access_type is:
 *   raw    : host memory access
 *   user   : user mode access using soft MMU
 *   kernel : kernel mode access using soft MMU
 */
#ifdef VBOX

void     remR3PhysRead(RTGCPHYS SrcGCPhys, void *pvDst, unsigned cb);
uint8_t  remR3PhysReadU8(RTGCPHYS SrcGCPhys);
int8_t   remR3PhysReadS8(RTGCPHYS SrcGCPhys);
uint16_t remR3PhysReadU16(RTGCPHYS SrcGCPhys);
int16_t  remR3PhysReadS16(RTGCPHYS SrcGCPhys);
uint32_t remR3PhysReadU32(RTGCPHYS SrcGCPhys);
int32_t  remR3PhysReadS32(RTGCPHYS SrcGCPhys);
uint64_t remR3PhysReadU64(RTGCPHYS SrcGCPhys);
int64_t  remR3PhysReadS64(RTGCPHYS SrcGCPhys);
void     remR3PhysWrite(RTGCPHYS DstGCPhys, const void *pvSrc, unsigned cb);
void     remR3PhysWriteU8(RTGCPHYS DstGCPhys, uint8_t val);
void     remR3PhysWriteU16(RTGCPHYS DstGCPhys, uint16_t val);
void     remR3PhysWriteU32(RTGCPHYS DstGCPhys, uint32_t val);
void     remR3PhysWriteU64(RTGCPHYS DstGCPhys, uint64_t val);

#ifndef VBOX_WITH_NEW_PHYS_CODE
void     remR3GrowDynRange(unsigned long physaddr);
#endif
#if 0 /*defined(RT_ARCH_AMD64) && defined(VBOX_STRICT)*/
# define VBOX_CHECK_ADDR(ptr) do { if ((uintptr_t)(ptr) >= _4G) __asm__("int3"); } while (0)
#else
# define VBOX_CHECK_ADDR(ptr) do { } while (0)
#endif

static inline int ldub_p(void *ptr)
{
    VBOX_CHECK_ADDR(ptr);
    return remR3PhysReadU8((uintptr_t)ptr);
}

static inline int ldsb_p(void *ptr)
{
    VBOX_CHECK_ADDR(ptr);
    return remR3PhysReadS8((uintptr_t)ptr);
}

static inline void stb_p(void *ptr, int v)
{
    VBOX_CHECK_ADDR(ptr);
    remR3PhysWriteU8((uintptr_t)ptr, v);
}

static inline int lduw_le_p(void *ptr)
{
    VBOX_CHECK_ADDR(ptr);
    return remR3PhysReadU16((uintptr_t)ptr);
}

static inline int ldsw_le_p(void *ptr)
{
    VBOX_CHECK_ADDR(ptr);
    return remR3PhysReadS16((uintptr_t)ptr);
}

static inline void stw_le_p(void *ptr, int v)
{
    VBOX_CHECK_ADDR(ptr);
    remR3PhysWriteU16((uintptr_t)ptr, v);
}

static inline int ldl_le_p(void *ptr)
{
    VBOX_CHECK_ADDR(ptr);
    return remR3PhysReadU32((uintptr_t)ptr);
}

static inline void stl_le_p(void *ptr, int v)
{
    VBOX_CHECK_ADDR(ptr);
    remR3PhysWriteU32((uintptr_t)ptr, v);
}

static inline void stq_le_p(void *ptr, uint64_t v)
{
    VBOX_CHECK_ADDR(ptr);
    remR3PhysWriteU64((uintptr_t)ptr, v);
}

static inline uint64_t ldq_le_p(void *ptr)
{
    VBOX_CHECK_ADDR(ptr);
    return remR3PhysReadU64((uintptr_t)ptr);
}

#undef VBOX_CHECK_ADDR

/* float access */

static inline float32 ldfl_le_p(void *ptr)
{
    union {
        float32 f;
        uint32_t i;
    } u;
    u.i = ldl_le_p(ptr);
    return u.f;
}

static inline void stfl_le_p(void *ptr, float32 v)
{
    union {
        float32 f;
        uint32_t i;
    } u;
    u.f = v;
    stl_le_p(ptr, u.i);
}

static inline float64 ldfq_le_p(void *ptr)
{
    CPU_DoubleU u;
    u.l.lower = ldl_le_p(ptr);
    u.l.upper = ldl_le_p(ptr + 4);
    return u.d;
}

static inline void stfq_le_p(void *ptr, float64 v)
{
    CPU_DoubleU u;
    u.d = v;
    stl_le_p(ptr, u.l.lower);
    stl_le_p(ptr + 4, u.l.upper);
}

#else  /* !VBOX */

static inline int ldub_p(void *ptr)
{
    return *(uint8_t *)ptr;
}

static inline int ldsb_p(void *ptr)
{
    return *(int8_t *)ptr;
}

static inline void stb_p(void *ptr, int v)
{
    *(uint8_t *)ptr = v;
}

/* NOTE: on arm, putting 2 in /proc/sys/debug/alignment so that the
   kernel handles unaligned load/stores may give better results, but
   it is a system wide setting : bad */
#if defined(WORDS_BIGENDIAN) || defined(WORDS_ALIGNED)

/* conservative code for little endian unaligned accesses */
static inline int lduw_le_p(void *ptr)
{
#ifdef __powerpc__
    int val;
    __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (ptr));
    return val;
#else
    uint8_t *p = ptr;
    return p[0] | (p[1] << 8);
#endif
}

static inline int ldsw_le_p(void *ptr)
{
#ifdef __powerpc__
    int val;
    __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (ptr));
    return (int16_t)val;
#else
    uint8_t *p = ptr;
    return (int16_t)(p[0] | (p[1] << 8));
#endif
}

static inline int ldl_le_p(void *ptr)
{
#ifdef __powerpc__
    int val;
    __asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (ptr));
    return val;
#else
    uint8_t *p = ptr;
    return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
#endif
}

static inline uint64_t ldq_le_p(void *ptr)
{
    uint8_t *p = ptr;
    uint32_t v1, v2;
    v1 = ldl_le_p(p);
    v2 = ldl_le_p(p + 4);
    return v1 | ((uint64_t)v2 << 32);
}

static inline void stw_le_p(void *ptr, int v)
{
#ifdef __powerpc__
    __asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*(uint16_t *)ptr) : "r" (v), "r" (ptr));
#else
    uint8_t *p = ptr;
    p[0] = v;
    p[1] = v >> 8;
#endif
}

static inline void stl_le_p(void *ptr, int v)
{
#ifdef __powerpc__
    __asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*(uint32_t *)ptr) : "r" (v), "r" (ptr));
#else
    uint8_t *p = ptr;
    p[0] = v;
    p[1] = v >> 8;
    p[2] = v >> 16;
    p[3] = v >> 24;
#endif
}

static inline void stq_le_p(void *ptr, uint64_t v)
{
    uint8_t *p = ptr;
    stl_le_p(p, (uint32_t)v);
    stl_le_p(p + 4, v >> 32);
}

/* float access */

static inline float32 ldfl_le_p(void *ptr)
{
    union {
        float32 f;
        uint32_t i;
    } u;
    u.i = ldl_le_p(ptr);
    return u.f;
}

static inline void stfl_le_p(void *ptr, float32 v)
{
    union {
        float32 f;
        uint32_t i;
    } u;
    u.f = v;
    stl_le_p(ptr, u.i);
}

static inline float64 ldfq_le_p(void *ptr)
{
    CPU_DoubleU u;
    u.l.lower = ldl_le_p(ptr);
    u.l.upper = ldl_le_p(ptr + 4);
    return u.d;
}

static inline void stfq_le_p(void *ptr, float64 v)
{
    CPU_DoubleU u;
    u.d = v;
    stl_le_p(ptr, u.l.lower);
    stl_le_p(ptr + 4, u.l.upper);
}

#else

static inline int lduw_le_p(void *ptr)
{
    return *(uint16_t *)ptr;
}

static inline int ldsw_le_p(void *ptr)
{
    return *(int16_t *)ptr;
}

static inline int ldl_le_p(void *ptr)
{
    return *(uint32_t *)ptr;
}

static inline uint64_t ldq_le_p(void *ptr)
{
    return *(uint64_t *)ptr;
}

static inline void stw_le_p(void *ptr, int v)
{
    *(uint16_t *)ptr = v;
}

static inline void stl_le_p(void *ptr, int v)
{
    *(uint32_t *)ptr = v;
}

static inline void stq_le_p(void *ptr, uint64_t v)
{
    *(uint64_t *)ptr = v;
}

/* float access */

static inline float32 ldfl_le_p(void *ptr)
{
    return *(float32 *)ptr;
}

static inline float64 ldfq_le_p(void *ptr)
{
    return *(float64 *)ptr;
}

static inline void stfl_le_p(void *ptr, float32 v)
{
    *(float32 *)ptr = v;
}

static inline void stfq_le_p(void *ptr, float64 v)
{
    *(float64 *)ptr = v;
}
#endif
#endif /* !VBOX */

#if !defined(WORDS_BIGENDIAN) || defined(WORDS_ALIGNED)

static inline int lduw_be_p(void *ptr)
{
#if defined(__i386__)
    int val;
    asm volatile ("movzwl %1, %0\n"
                  "xchgb %b0, %h0\n"
                  : "=q" (val)
                  : "m" (*(uint16_t *)ptr));
    return val;
#else
    uint8_t *b = (uint8_t *) ptr;
    return ((b[0] << 8) | b[1]);
#endif
}

static inline int ldsw_be_p(void *ptr)
{
#if defined(__i386__)
    int val;
    asm volatile ("movzwl %1, %0\n"
                  "xchgb %b0, %h0\n"
                  : "=q" (val)
                  : "m" (*(uint16_t *)ptr));
    return (int16_t)val;
#else
    uint8_t *b = (uint8_t *) ptr;
    return (int16_t)((b[0] << 8) | b[1]);
#endif
}

static inline int ldl_be_p(void *ptr)
{
#if defined(__i386__) || defined(__x86_64__)
    int val;
    asm volatile ("movl %1, %0\n"
                  "bswap %0\n"
                  : "=r" (val)
                  : "m" (*(uint32_t *)ptr));
    return val;
#else
    uint8_t *b = (uint8_t *) ptr;
    return (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3];
#endif
}

static inline uint64_t ldq_be_p(void *ptr)
{
    uint32_t a,b;
    a = ldl_be_p(ptr);
    b = ldl_be_p(ptr+4);
    return (((uint64_t)a<<32)|b);
}

static inline void stw_be_p(void *ptr, int v)
{
#if defined(__i386__)
    asm volatile ("xchgb %b0, %h0\n"
                  "movw %w0, %1\n"
                  : "=q" (v)
                  : "m" (*(uint16_t *)ptr), "0" (v));
#else
    uint8_t *d = (uint8_t *) ptr;
    d[0] = v >> 8;
    d[1] = v;
#endif
}

static inline void stl_be_p(void *ptr, int v)
{
#if defined(__i386__) || defined(__x86_64__)
    asm volatile ("bswap %0\n"
                  "movl %0, %1\n"
                  : "=r" (v)
                  : "m" (*(uint32_t *)ptr), "0" (v));
#else
    uint8_t *d = (uint8_t *) ptr;
    d[0] = v >> 24;
    d[1] = v >> 16;
    d[2] = v >> 8;
    d[3] = v;
#endif
}

static inline void stq_be_p(void *ptr, uint64_t v)
{
    stl_be_p(ptr, v >> 32);
    stl_be_p(ptr + 4, v);
}

/* float access */

static inline float32 ldfl_be_p(void *ptr)
{
    union {
        float32 f;
        uint32_t i;
    } u;
    u.i = ldl_be_p(ptr);
    return u.f;
}

static inline void stfl_be_p(void *ptr, float32 v)
{
    union {
        float32 f;
        uint32_t i;
    } u;
    u.f = v;
    stl_be_p(ptr, u.i);
}

static inline float64 ldfq_be_p(void *ptr)
{
    CPU_DoubleU u;
    u.l.upper = ldl_be_p(ptr);
    u.l.lower = ldl_be_p(ptr + 4);
    return u.d;
}

static inline void stfq_be_p(void *ptr, float64 v)
{
    CPU_DoubleU u;
    u.d = v;
    stl_be_p(ptr, u.l.upper);
    stl_be_p(ptr + 4, u.l.lower);
}

#else

static inline int lduw_be_p(void *ptr)
{
    return *(uint16_t *)ptr;
}

static inline int ldsw_be_p(void *ptr)
{
    return *(int16_t *)ptr;
}

static inline int ldl_be_p(void *ptr)
{
    return *(uint32_t *)ptr;
}

static inline uint64_t ldq_be_p(void *ptr)
{
    return *(uint64_t *)ptr;
}

static inline void stw_be_p(void *ptr, int v)
{
    *(uint16_t *)ptr = v;
}

static inline void stl_be_p(void *ptr, int v)
{
    *(uint32_t *)ptr = v;
}

static inline void stq_be_p(void *ptr, uint64_t v)
{
    *(uint64_t *)ptr = v;
}

/* float access */

static inline float32 ldfl_be_p(void *ptr)
{
    return *(float32 *)ptr;
}

static inline float64 ldfq_be_p(void *ptr)
{
    return *(float64 *)ptr;
}

static inline void stfl_be_p(void *ptr, float32 v)
{
    *(float32 *)ptr = v;
}

static inline void stfq_be_p(void *ptr, float64 v)
{
    *(float64 *)ptr = v;
}

#endif

/* target CPU memory access functions */
#if defined(TARGET_WORDS_BIGENDIAN)
#define lduw_p(p) lduw_be_p(p)
#define ldsw_p(p) ldsw_be_p(p)
#define ldl_p(p) ldl_be_p(p)
#define ldq_p(p) ldq_be_p(p)
#define ldfl_p(p) ldfl_be_p(p)
#define ldfq_p(p) ldfq_be_p(p)
#define stw_p(p, v) stw_be_p(p, v)
#define stl_p(p, v) stl_be_p(p, v)
#define stq_p(p, v) stq_be_p(p, v)
#define stfl_p(p, v) stfl_be_p(p, v)
#define stfq_p(p, v) stfq_be_p(p, v)
#else
#define lduw_p(p) lduw_le_p(p)
#define ldsw_p(p) ldsw_le_p(p)
#define ldl_p(p) ldl_le_p(p)
#define ldq_p(p) ldq_le_p(p)
#define ldfl_p(p) ldfl_le_p(p)
#define ldfq_p(p) ldfq_le_p(p)
#define stw_p(p, v) stw_le_p(p, v)
#define stl_p(p, v) stl_le_p(p, v)
#define stq_p(p, v) stq_le_p(p, v)
#define stfl_p(p, v) stfl_le_p(p, v)
#define stfq_p(p, v) stfq_le_p(p, v)
#endif

/* MMU memory access macros */

#if defined(CONFIG_USER_ONLY)
/* On some host systems the guest address space is reserved on the host.
 * This allows the guest address space to be offset to a convenient location.
 */
//#define GUEST_BASE 0x20000000
#define GUEST_BASE 0

/* All direct uses of g2h and h2g need to go away for usermode softmmu.  */
#define g2h(x) ((void *)((unsigned long)(x) + GUEST_BASE))
#define h2g(x) ((target_ulong)(x - GUEST_BASE))

#define saddr(x) g2h(x)
#define laddr(x) g2h(x)

#else /* !CONFIG_USER_ONLY */
/* NOTE: we use double casts if pointers and target_ulong have
   different sizes */
#define saddr(x) (uint8_t *)(long)(x)
#define laddr(x) (uint8_t *)(long)(x)
#endif

#define ldub_raw(p) ldub_p(laddr((p)))
#define ldsb_raw(p) ldsb_p(laddr((p)))
#define lduw_raw(p) lduw_p(laddr((p)))
#define ldsw_raw(p) ldsw_p(laddr((p)))
#define ldl_raw(p) ldl_p(laddr((p)))
#define ldq_raw(p) ldq_p(laddr((p)))
#define ldfl_raw(p) ldfl_p(laddr((p)))
#define ldfq_raw(p) ldfq_p(laddr((p)))
#define stb_raw(p, v) stb_p(saddr((p)), v)
#define stw_raw(p, v) stw_p(saddr((p)), v)
#define stl_raw(p, v) stl_p(saddr((p)), v)
#define stq_raw(p, v) stq_p(saddr((p)), v)
#define stfl_raw(p, v) stfl_p(saddr((p)), v)
#define stfq_raw(p, v) stfq_p(saddr((p)), v)


#if defined(CONFIG_USER_ONLY)

/* if user mode, no other memory access functions */
#define ldub(p) ldub_raw(p)
#define ldsb(p) ldsb_raw(p)
#define lduw(p) lduw_raw(p)
#define ldsw(p) ldsw_raw(p)
#define ldl(p) ldl_raw(p)
#define ldq(p) ldq_raw(p)
#define ldfl(p) ldfl_raw(p)
#define ldfq(p) ldfq_raw(p)
#define stb(p, v) stb_raw(p, v)
#define stw(p, v) stw_raw(p, v)
#define stl(p, v) stl_raw(p, v)
#define stq(p, v) stq_raw(p, v)
#define stfl(p, v) stfl_raw(p, v)
#define stfq(p, v) stfq_raw(p, v)

#define ldub_code(p) ldub_raw(p)
#define ldsb_code(p) ldsb_raw(p)
#define lduw_code(p) lduw_raw(p)
#define ldsw_code(p) ldsw_raw(p)
#define ldl_code(p) ldl_raw(p)

#define ldub_kernel(p) ldub_raw(p)
#define ldsb_kernel(p) ldsb_raw(p)
#define lduw_kernel(p) lduw_raw(p)
#define ldsw_kernel(p) ldsw_raw(p)
#define ldl_kernel(p) ldl_raw(p)
#define ldfl_kernel(p) ldfl_raw(p)
#define ldfq_kernel(p) ldfq_raw(p)
#define stb_kernel(p, v) stb_raw(p, v)
#define stw_kernel(p, v) stw_raw(p, v)
#define stl_kernel(p, v) stl_raw(p, v)
#define stq_kernel(p, v) stq_raw(p, v)
#define stfl_kernel(p, v) stfl_raw(p, v)
#define stfq_kernel(p, vt) stfq_raw(p, v)

#endif /* defined(CONFIG_USER_ONLY) */

/* page related stuff */

#define TARGET_PAGE_SIZE (1 << TARGET_PAGE_BITS)
#define TARGET_PAGE_MASK ~(TARGET_PAGE_SIZE - 1)
#define TARGET_PAGE_ALIGN(addr) (((addr) + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK)

/* ??? These should be the larger of unsigned long and target_ulong.  */
extern unsigned long qemu_real_host_page_size;
extern unsigned long qemu_host_page_bits;
extern unsigned long qemu_host_page_size;
extern unsigned long qemu_host_page_mask;

#define HOST_PAGE_ALIGN(addr) (((addr) + qemu_host_page_size - 1) & qemu_host_page_mask)

/* same as PROT_xxx */
#define PAGE_READ      0x0001
#define PAGE_WRITE     0x0002
#define PAGE_EXEC      0x0004
#define PAGE_BITS      (PAGE_READ | PAGE_WRITE | PAGE_EXEC)
#define PAGE_VALID     0x0008
/* original state of the write flag (used when tracking self-modifying
   code */
#define PAGE_WRITE_ORG 0x0010

void page_dump(FILE *f);
int page_get_flags(target_ulong address);
void page_set_flags(target_ulong start, target_ulong end, int flags);
void page_unprotect_range(target_ulong data, target_ulong data_size);

#define SINGLE_CPU_DEFINES
#ifdef SINGLE_CPU_DEFINES

#if defined(TARGET_I386)

#define CPUState CPUX86State
#define cpu_init cpu_x86_init
#define cpu_exec cpu_x86_exec
#define cpu_gen_code cpu_x86_gen_code
#define cpu_signal_handler cpu_x86_signal_handler

#elif defined(TARGET_ARM)

#define CPUState CPUARMState
#define cpu_init cpu_arm_init
#define cpu_exec cpu_arm_exec
#define cpu_gen_code cpu_arm_gen_code
#define cpu_signal_handler cpu_arm_signal_handler

#elif defined(TARGET_SPARC)

#define CPUState CPUSPARCState
#define cpu_init cpu_sparc_init
#define cpu_exec cpu_sparc_exec
#define cpu_gen_code cpu_sparc_gen_code
#define cpu_signal_handler cpu_sparc_signal_handler

#elif defined(TARGET_PPC)

#define CPUState CPUPPCState
#define cpu_init cpu_ppc_init
#define cpu_exec cpu_ppc_exec
#define cpu_gen_code cpu_ppc_gen_code
#define cpu_signal_handler cpu_ppc_signal_handler

#elif defined(TARGET_M68K)
#define CPUState CPUM68KState
#define cpu_init cpu_m68k_init
#define cpu_exec cpu_m68k_exec
#define cpu_gen_code cpu_m68k_gen_code
#define cpu_signal_handler cpu_m68k_signal_handler

#elif defined(TARGET_MIPS)
#define CPUState CPUMIPSState
#define cpu_init cpu_mips_init
#define cpu_exec cpu_mips_exec
#define cpu_gen_code cpu_mips_gen_code
#define cpu_signal_handler cpu_mips_signal_handler

#elif defined(TARGET_SH4)
#define CPUState CPUSH4State
#define cpu_init cpu_sh4_init
#define cpu_exec cpu_sh4_exec
#define cpu_gen_code cpu_sh4_gen_code
#define cpu_signal_handler cpu_sh4_signal_handler

#else

#error unsupported target CPU

#endif

#endif /* SINGLE_CPU_DEFINES */

void cpu_dump_state(CPUState *env, FILE *f,
                    int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
                    int flags);

DECLNORETURN(void) cpu_abort(CPUState *env, const char *fmt, ...);
extern CPUState *first_cpu;
extern CPUState *cpu_single_env;
extern int code_copy_enabled;

#define CPU_INTERRUPT_EXIT   0x01 /* wants exit from main loop */
#define CPU_INTERRUPT_HARD   0x02 /* hardware interrupt pending */
#define CPU_INTERRUPT_EXITTB 0x04 /* exit the current TB (use for x86 a20 case) */
#define CPU_INTERRUPT_TIMER  0x08 /* internal timer exception pending */
#define CPU_INTERRUPT_FIQ    0x10 /* Fast interrupt pending.  */
#define CPU_INTERRUPT_HALT   0x20 /* CPU halt wanted */
#define CPU_INTERRUPT_SMI    0x40 /* (x86 only) SMI interrupt pending */

#ifdef VBOX
/** Executes a single instruction. cpu_exec() will normally return EXCP_SINGLE_INSTR. */
#define CPU_INTERRUPT_SINGLE_INSTR              0x0200
/** Executing a CPU_INTERRUPT_SINGLE_INSTR request, quit the cpu_loop. (for exceptions and suchlike) */
#define CPU_INTERRUPT_SINGLE_INSTR_IN_FLIGHT    0x0400
/** VM execution was interrupted by VMR3Reset, VMR3Suspend or VMR3PowerOff. */
#define CPU_INTERRUPT_RC                        0x0800
/** Exit current TB to process an external interrupt request (also in op.c!!) */
#define CPU_INTERRUPT_EXTERNAL_EXIT             0x1000
/** Exit current TB to process an external interrupt request (also in op.c!!) */
#define CPU_INTERRUPT_EXTERNAL_HARD             0x2000
/** Exit current TB to process an external interrupt request (also in op.c!!) */
#define CPU_INTERRUPT_EXTERNAL_TIMER            0x4000
/** Exit current TB to process an external interrupt request (also in op.c!!) */
#define CPU_INTERRUPT_EXTERNAL_DMA              0x8000
#endif /* VBOX */
void cpu_interrupt(CPUState *s, int mask);
void cpu_reset_interrupt(CPUState *env, int mask);

int cpu_breakpoint_insert(CPUState *env, target_ulong pc);
int cpu_breakpoint_remove(CPUState *env, target_ulong pc);
void cpu_single_step(CPUState *env, int enabled);
void cpu_reset(CPUState *s);

/* Return the physical page corresponding to a virtual one. Use it
   only for debugging because no protection checks are done. Return -1
   if no page found. */
target_ulong cpu_get_phys_page_debug(CPUState *env, target_ulong addr);

#