auto import from //depot/cupcake/@135843

1 files changed, 0 insertions, 3201 deletions

diff --git a/exec.c b/exec.c
deleted file mode 100644
index 547801b..0000000
--- a/exec.c
+++ /dev/null
@@ -1,3201 +0,0 @@
-/*
- *  virtual page mapping and translated block handling
- *
- *  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
- */
-#include "config.h"
-#ifdef _WIN32
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#else
-#include <sys/types.h>
-#include <sys/mman.h>
-#endif
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdarg.h>
-#include <string.h>
-#include <errno.h>
-#include <unistd.h>
-#include <inttypes.h>
-
-#include "cpu.h"
-#include "exec-all.h"
-#include "qemu-common.h"
-#include "tcg.h"
-#include "hw/hw.h"
-#if defined(CONFIG_USER_ONLY)
-#include <qemu.h>
-#endif
-
-//#define DEBUG_TB_INVALIDATE
-//#define DEBUG_FLUSH
-//#define DEBUG_TLB
-//#define DEBUG_UNASSIGNED
-
-/* make various TB consistency checks */
-//#define DEBUG_TB_CHECK
-//#define DEBUG_TLB_CHECK
-
-//#define DEBUG_IOPORT
-//#define DEBUG_SUBPAGE
-
-#if !defined(CONFIG_USER_ONLY)
-/* TB consistency checks only implemented for usermode emulation.  */
-#undef DEBUG_TB_CHECK
-#endif
-
-#define SMC_BITMAP_USE_THRESHOLD 10
-
-#define MMAP_AREA_START        0x00000000
-#define MMAP_AREA_END          0xa8000000
-
-#if defined(TARGET_SPARC64)
-#define TARGET_PHYS_ADDR_SPACE_BITS 41
-#elif defined(TARGET_SPARC)
-#define TARGET_PHYS_ADDR_SPACE_BITS 36
-#elif defined(TARGET_ALPHA)
-#define TARGET_PHYS_ADDR_SPACE_BITS 42
-#define TARGET_VIRT_ADDR_SPACE_BITS 42
-#elif defined(TARGET_PPC64)
-#define TARGET_PHYS_ADDR_SPACE_BITS 42
-#elif defined(TARGET_X86_64) && !defined(USE_KQEMU)
-#define TARGET_PHYS_ADDR_SPACE_BITS 42
-#elif defined(TARGET_I386) && !defined(USE_KQEMU)
-#define TARGET_PHYS_ADDR_SPACE_BITS 36
-#else
-/* Note: for compatibility with kqemu, we use 32 bits for x86_64 */
-#define TARGET_PHYS_ADDR_SPACE_BITS 32
-#endif
-
-TranslationBlock *tbs;
-int code_gen_max_blocks;
-TranslationBlock *tb_phys_hash[CODE_GEN_PHYS_HASH_SIZE];
-int nb_tbs;
-/* any access to the tbs or the page table must use this lock */
-spinlock_t tb_lock = SPIN_LOCK_UNLOCKED;
-
-#if defined(__arm__) || defined(__sparc_v9__)
-/* The prologue must be reachable with a direct jump. ARM and Sparc64
- have limited branch ranges (possibly also PPC) so place it in a
- section close to code segment. */
-#define code_gen_section                                \
-    __attribute__((__section__(".gen_code")))           \
-    __attribute__((aligned (32)))
-#else
-#define code_gen_section                                \
-    __attribute__((aligned (32)))
-#endif
-
-uint8_t code_gen_prologue[1024] code_gen_section;
-uint8_t *code_gen_buffer;
-unsigned long code_gen_buffer_size;
-/* threshold to flush the translated code buffer */
-unsigned long code_gen_buffer_max_size; 
-uint8_t *code_gen_ptr;
-
-#if !defined(CONFIG_USER_ONLY)
-ram_addr_t phys_ram_size;
-int phys_ram_fd;
-uint8_t *phys_ram_base;
-uint8_t *phys_ram_dirty;
-static ram_addr_t phys_ram_alloc_offset = 0;
-#endif
-
-CPUState *first_cpu;
-/* current CPU in the current thread. It is only valid inside
-   cpu_exec() */
-CPUState *cpu_single_env;
-/* 0 = Do not count executed instructions.
-   1 = Precise instruction counting.
-   2 = Adaptive rate instruction counting.  */
-int use_icount = 0;
-/* Current instruction counter.  While executing translated code this may
-   include some instructions that have not yet been executed.  */
-int64_t qemu_icount;
-
-typedef struct PageDesc {
-    /* list of TBs intersecting this ram page */
-    TranslationBlock *first_tb;
-    /* in order to optimize self modifying code, we count the number
-       of lookups we do to a given page to use a bitmap */
-    unsigned int code_write_count;
-    uint8_t *code_bitmap;
-#if defined(CONFIG_USER_ONLY)
-    unsigned long flags;
-#endif
-} PageDesc;
-
-typedef struct PhysPageDesc {
-    /* offset in host memory of the page + io_index in the low bits */
-    ram_addr_t phys_offset;
-} PhysPageDesc;
-
-#define L2_BITS 10
-#if defined(CONFIG_USER_ONLY) && defined(TARGET_VIRT_ADDR_SPACE_BITS)
-/* XXX: this is a temporary hack for alpha target.
- *      In the future, this is to be replaced by a multi-level table
- *      to actually be able to handle the complete 64 bits address space.
- */
-#define L1_BITS (TARGET_VIRT_ADDR_SPACE_BITS - L2_BITS - TARGET_PAGE_BITS)
-#else
-#define L1_BITS (32 - L2_BITS - TARGET_PAGE_BITS)
-#endif
-
-#define L1_SIZE (1 << L1_BITS)
-#define L2_SIZE (1 << L2_BITS)
-
-unsigned long qemu_real_host_page_size;
-unsigned long qemu_host_page_bits;
-unsigned long qemu_host_page_size;
-unsigned long qemu_host_page_mask;
-
-/* XXX: for system emulation, it could just be an array */
-static PageDesc *l1_map[L1_SIZE];
-PhysPageDesc **l1_phys_map;
-
-#if !defined(CONFIG_USER_ONLY)
-static void io_mem_init(void);
-
-/* io memory support */
-CPUWriteMemoryFunc *io_mem_write[IO_MEM_NB_ENTRIES][4];
-CPUReadMemoryFunc *io_mem_read[IO_MEM_NB_ENTRIES][4];
-void *io_mem_opaque[IO_MEM_NB_ENTRIES];
-static int io_mem_nb;
-static int io_mem_watch;
-#endif
-
-/* log support */
-const char *logfilename = "/tmp/qemu.log";
-FILE *logfile;
-int loglevel;
-static int log_append = 0;
-
-/* statistics */
-static int tlb_flush_count;
-static int tb_flush_count;
-static int tb_phys_invalidate_count;
-
-#define SUBPAGE_IDX(addr) ((addr) & ~TARGET_PAGE_MASK)
-typedef struct subpage_t {
-    target_phys_addr_t base;
-    CPUReadMemoryFunc **mem_read[TARGET_PAGE_SIZE][4];
-    CPUWriteMemoryFunc **mem_write[TARGET_PAGE_SIZE][4];
-    void *opaque[TARGET_PAGE_SIZE][2][4];
-} subpage_t;
-
-#ifdef _WIN32
-static void map_exec(void *addr, long size)
-{
-    DWORD old_protect;
-    VirtualProtect(addr, size,
-                   PAGE_EXECUTE_READWRITE, &old_protect);
-    
-}
-#else
-static void map_exec(void *addr, long size)
-{
-    unsigned long start, end, page_size;
-    
-    page_size = getpagesize();
-    start = (unsigned long)addr;
-    start &= ~(page_size - 1);
-    
-    end = (unsigned long)addr + size;
-    end += page_size - 1;
-    end &= ~(page_size - 1);
-    
-    mprotect((void *)start, end - start,
-             PROT_READ | PROT_WRITE | PROT_EXEC);
-}
-#endif
-
-static void page_init(void)
-{
-    /* NOTE: we can always suppose that qemu_host_page_size >=
-       TARGET_PAGE_SIZE */
-#ifdef _WIN32
-    {
-        SYSTEM_INFO system_info;
-        DWORD old_protect;
-
-        GetSystemInfo(&system_info);
-        qemu_real_host_page_size = system_info.dwPageSize;
-    }
-#else
-    qemu_real_host_page_size = getpagesize();
-#endif
-    if (qemu_host_page_size == 0)
-        qemu_host_page_size = qemu_real_host_page_size;
-    if (qemu_host_page_size < TARGET_PAGE_SIZE)
-        qemu_host_page_size = TARGET_PAGE_SIZE;
-    qemu_host_page_bits = 0;
-    while ((1 << qemu_host_page_bits) < qemu_host_page_size)
-        qemu_host_page_bits++;
-    qemu_host_page_mask = ~(qemu_host_page_size - 1);
-    l1_phys_map = qemu_vmalloc(L1_SIZE * sizeof(void *));
-    memset(l1_phys_map, 0, L1_SIZE * sizeof(void *));
-
-#if !defined(_WIN32) && defined(CONFIG_USER_ONLY)
-    {
-        long long startaddr, endaddr;
-        FILE *f;
-        int n;
-
-        mmap_lock();
-        last_brk = (unsigned long)sbrk(0);
-        f = fopen("/proc/self/maps", "r");
-        if (f) {
-            do {
-                n = fscanf (f, "%llx-%llx %*[^\n]\n", &startaddr, &endaddr);
-                if (n == 2) {
-                    startaddr = MIN(startaddr,
-                                    (1ULL << TARGET_PHYS_ADDR_SPACE_BITS) - 1);
-                    endaddr = MIN(endaddr,
-                                    (1ULL << TARGET_PHYS_ADDR_SPACE_BITS) - 1);
-                    page_set_flags(startaddr & TARGET_PAGE_MASK,
-                                   TARGET_PAGE_ALIGN(endaddr),
-                                   PAGE_RESERVED); 
-                }
-            } while (!feof(f));
-            fclose(f);
-        }
-        mmap_unlock();
-    }
-#endif
-}
-
-static inline PageDesc **page_l1_map(target_ulong index)
-{
-#if TARGET_LONG_BITS > 32
-    /* Host memory outside guest VM.  For 32-bit targets we have already
-       excluded high addresses.  */
-    if (index > ((target_ulong)L2_SIZE * L1_SIZE))
-        return NULL;
-#endif
-    return &l1_map[index >> L2_BITS];
-}
-
-static inline PageDesc *page_find_alloc(target_ulong index)
-{
-    PageDesc **lp, *p;
-    lp = page_l1_map(index);
-    if (!lp)
-        return NULL;
-
-    p = *lp;
-    if (!p) {
-        /* allocate if not found */
-#if defined(CONFIG_USER_ONLY)
-        unsigned long addr;
-        size_t len = sizeof(PageDesc) * L2_SIZE;
-        /* Don't use qemu_malloc because it may recurse.  */
-        p = mmap(0, len, PROT_READ | PROT_WRITE,
-                 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-        *lp = p;
-        addr = h2g(p);
-        if (addr == (target_ulong)addr) {
-            page_set_flags(addr & TARGET_PAGE_MASK,
-                           TARGET_PAGE_ALIGN(addr + len),
-                           PAGE_RESERVED); 
-        }
-#else
-        p = qemu_mallocz(sizeof(PageDesc) * L2_SIZE);
-        *lp = p;
-#endif
-    }
-    return p + (index & (L2_SIZE - 1));
-}
-
-static inline PageDesc *page_find(target_ulong index)
-{
-    PageDesc **lp, *p;
-    lp = page_l1_map(index);
-    if (!lp)
-        return NULL;
-
-    p = *lp;
-    if (!p)
-        return 0;
-    return p + (index & (L2_SIZE - 1));
-}
-
-static PhysPageDesc *phys_page_find_alloc(target_phys_addr_t index, int alloc)
-{
-    void **lp, **p;
-    PhysPageDesc *pd;
-
-    p = (void **)l1_phys_map;
-#if TARGET_PHYS_ADDR_SPACE_BITS > 32
-
-#if TARGET_PHYS_ADDR_SPACE_BITS > (32 + L1_BITS)
-#error unsupported TARGET_PHYS_ADDR_SPACE_BITS
-#endif
-    lp = p + ((index >> (L1_BITS + L2_BITS)) & (L1_SIZE - 1));
-    p = *lp;
-    if (!p) {
-        /* allocate if not found */
-        if (!alloc)
-            return NULL;
-        p = qemu_vmalloc(sizeof(void *) * L1_SIZE);
-        memset(p, 0, sizeof(void *) * L1_SIZE);
-        *lp = p;
-    }
-#endif
-    lp = p + ((index >> L2_BITS) & (L1_SIZE - 1));
-    pd = *lp;
-    if (!pd) {
-        int i;
-        /* allocate if not found */
-        if (!alloc)
-            return NULL;
-        pd = qemu_vmalloc(sizeof(PhysPageDesc) * L2_SIZE);
-        *lp = pd;
-        for (i = 0; i < L2_SIZE; i++)
-          pd[i].phys_offset = IO_MEM_UNASSIGNED;
-    }
-    return ((PhysPageDesc *)pd) + (index & (L2_SIZE - 1));
-}
-
-static inline PhysPageDesc *phys_page_find(target_phys_addr_t index)
-{
-    return phys_page_find_alloc(index, 0);
-}
-
-#if !defined(CONFIG_USER_ONLY)
-static void tlb_protect_code(ram_addr_t ram_addr);
-static void tlb_unprotect_code_phys(CPUState *env, ram_addr_t ram_addr,
-                                    target_ulong vaddr);
-#define mmap_lock() do { } while(0)
-#define mmap_unlock() do { } while(0)
-#endif
-
-#define DEFAULT_CODE_GEN_BUFFER_SIZE (32 * 1024 * 1024)
-
-#if defined(CONFIG_USER_ONLY)
-/* Currently it is not recommanded to allocate big chunks of data in
-   user mode. It will change when a dedicated libc will be used */
-#define USE_STATIC_CODE_GEN_BUFFER
-#endif
-
-#ifdef USE_STATIC_CODE_GEN_BUFFER
-static uint8_t static_code_gen_buffer[DEFAULT_CODE_GEN_BUFFER_SIZE];
-#endif
-
-static void code_gen_alloc(unsigned long tb_size)
-{
-#ifdef USE_STATIC_CODE_GEN_BUFFER
-    code_gen_buffer = static_code_gen_buffer;
-    code_gen_buffer_size = DEFAULT_CODE_GEN_BUFFER_SIZE;
-    map_exec(code_gen_buffer, code_gen_buffer_size);
-#else
-    code_gen_buffer_size = tb_size;
-    if (code_gen_buffer_size == 0) {
-#if defined(CONFIG_USER_ONLY)
-        /* in user mode, phys_ram_size is not meaningful */
-        code_gen_buffer_size = DEFAULT_CODE_GEN_BUFFER_SIZE;
-#else
-        /* XXX: needs ajustments */
-        code_gen_buffer_size = (int)(phys_ram_size / 4);
-#endif
-    }
-    if (code_gen_buffer_size < MIN_CODE_GEN_BUFFER_SIZE)
-        code_gen_buffer_size = MIN_CODE_GEN_BUFFER_SIZE;
-    /* The code gen buffer location may have constraints depending on
-       the host cpu and OS */
-#if defined(__linux__) 
-    {
-        int flags;
-        void *start = NULL;
-
-        flags = MAP_PRIVATE | MAP_ANONYMOUS;
-#if defined(__x86_64__)
-        flags |= MAP_32BIT;
-        /* Cannot map more than that */
-        if (code_gen_buffer_size > (800 * 1024 * 1024))
-            code_gen_buffer_size = (800 * 1024 * 1024);
-#elif defined(__sparc_v9__)
-        // Map the buffer below 2G, so we can use direct calls and branches
-        flags |= MAP_FIXED;
-        start = (void *) 0x60000000UL;
-        if (code_gen_buffer_size > (512 * 1024 * 1024))
-            code_gen_buffer_size = (512 * 1024 * 1024);
-#endif
-        code_gen_buffer = mmap(start, code_gen_buffer_size,
-                               PROT_WRITE | PROT_READ | PROT_EXEC,
-                               flags, -1, 0);
-        if (code_gen_buffer == MAP_FAILED) {
-            fprintf(stderr, "Could not allocate dynamic translator buffer\n");
-            exit(1);
-        }
-    }
-#else
-    code_gen_buffer = qemu_malloc(code_gen_buffer_size);
-    if (!code_gen_buffer) {
-        fprintf(stderr, "Could not allocate dynamic translator buffer\n");
-        exit(1);
-    }
-    map_exec(code_gen_buffer, code_gen_buffer_size);
-#endif
-#endif /* !USE_STATIC_CODE_GEN_BUFFER */
-    map_exec(code_gen_prologue, sizeof(code_gen_prologue));
-    code_gen_buffer_max_size = code_gen_buffer_size - 
-        code_gen_max_block_size();
-    code_gen_max_blocks = code_gen_buffer_size / CODE_GEN_AVG_BLOCK_SIZE;
-    tbs = qemu_malloc(code_gen_max_blocks * sizeof(TranslationBlock));
-}
-
-/* Must be called before using the QEMU cpus. 'tb_size' is the size
-   (in bytes) allocated to the translation buffer. Zero means default
-   size. */
-void cpu_exec_init_all(unsigned long tb_size)
-{
-    cpu_gen_init();
-    code_gen_alloc(tb_size);
-    code_gen_ptr = code_gen_buffer;
-    page_init();
-#if !defined(CONFIG_USER_ONLY)
-    io_mem_init();
-#endif
-}
-
-#if defined(CPU_SAVE_VERSION) && !defined(CONFIG_USER_ONLY)
-
-#define CPU_COMMON_SAVE_VERSION 1
-
-static void cpu_common_save(QEMUFile *f, void *opaque)
-{
-    CPUState *env = opaque;
-
-    qemu_put_be32s(f, &env->halted);
-    qemu_put_be32s(f, &env->interrupt_request);
-}
-
-static int cpu_common_load(QEMUFile *f, void *opaque, int version_id)
-{
-    CPUState *env = opaque;
-
-    if (version_id != CPU_COMMON_SAVE_VERSION)
-        return -EINVAL;
-
-    qemu_get_be32s(f, &env->halted);
-    qemu_get_be32s(f, &env->interrupt_request);
-    tlb_flush(env, 1);
-
-    return 0;
-}
-#endif
-
-void cpu_exec_init(CPUState *env)
-{
-    CPUState **penv;
-    int cpu_index;
-
-    env->next_cpu = NULL;
-    penv = &first_cpu;
-    cpu_index = 0;
-    while (*penv != NULL) {
-        penv = (CPUState **)&(*penv)->next_cpu;
-        cpu_index++;
-    }
-    env->cpu_index = cpu_index;
-    env->nb_watchpoints = 0;
-    *penv = env;
-#if defined(CPU_SAVE_VERSION) && !defined(CONFIG_USER_ONLY)
-    register_savevm("cpu_common", cpu_index, CPU_COMMON_SAVE_VERSION,
-                    cpu_common_save, cpu_common_load, env);
-    register_savevm("cpu", cpu_index, CPU_SAVE_VERSION,
-                    cpu_save, cpu_load, env);
-#endif
-}
-
-static inline void invalidate_page_bitmap(PageDesc *p)
-{
-    if (p->code_bitmap) {
-        qemu_free(p->code_bitmap);
-        p->code_bitmap = NULL;
-    }
-    p->code_write_count = 0;
-}
-
-/* set to NULL all the 'first_tb' fields in all PageDescs */
-static void page_flush_tb(void)
-{
-    int i, j;
-    PageDesc *p;
-
-    for(i = 0; i < L1_SIZE; i++) {
-        p = l1_map[i];
-        if (p) {
-            for(j = 0; j < L2_SIZE; j++) {
-                p->first_tb = NULL;
-                invalidate_page_bitmap(p);
-                p++;
-            }
-        }
-    }
-}
-
-/* flush all the translation blocks */
-/* XXX: tb_flush is currently not thread safe */
-void tb_flush(CPUState *env1)
-{
-    CPUState *env;
-#if defined(DEBUG_FLUSH)
-    printf("qemu: flush code_size=%ld nb_tbs=%d avg_tb_size=%ld\n",
-           (unsigned long)(code_gen_ptr - code_gen_buffer),
-           nb_tbs, nb_tbs > 0 ?
-           ((unsigned long)(code_gen_ptr - code_gen_buffer)) / nb_tbs : 0);
-#endif
-    if ((unsigned long)(code_gen_ptr - code_gen_buffer) > code_gen_buffer_size)
-        cpu_abort(env1, "Internal error: code buffer overflow\n");
-
-    nb_tbs = 0;
-
-    for(env = first_cpu; env != NULL; env = env->next_cpu) {
-        memset (env->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof (void *));
-    }
-
-    memset (tb_phys_hash, 0, CODE_GEN_PHYS_HASH_SIZE * sizeof (void *));
-    page_flush_tb();
-
-    code_gen_ptr = code_gen_buffer;
-    /* XXX: flush processor icache at this point if cache flush is
-       expensive */
-    tb_flush_count++;
-}
-
-#ifdef DEBUG_TB_CHECK
-
-static void tb_invalidate_check(target_ulong address)
-{
-    TranslationBlock *tb;
-    int i;
-    address &= TARGET_PAGE_MASK;
-    for(i = 0;i < CODE_GEN_PHYS_HASH_SIZE; i++) {
-        for(tb = tb_phys_hash[i]; tb != NULL; tb = tb->phys_hash_next) {
-            if (!(address + TARGET_PAGE_SIZE <= tb->pc ||
-                  address >= tb->pc + tb->size)) {
-                printf("ERROR invalidate: address=%08lx PC=%08lx size=%04x\n",
-                       address, (long)tb->pc, tb->size);
-            }
-        }
-    }
-}
-
-/* verify that all the pages have correct rights for code */
-static void tb_page_check(void)
-{
-    TranslationBlock *tb;
-    int i, flags1, flags2;
-
-    for(i = 0;i < CODE_GEN_PHYS_HASH_SIZE; i++) {
-        for(tb = tb_phys_hash[i]; tb != NULL; tb = tb->phys_hash_next) {
-            flags1 = page_get_flags(tb->pc);
-            flags2 = page_get_flags(tb->pc + tb->size - 1);
-            if ((flags1 & PAGE_WRITE) || (flags2 & PAGE_WRITE)) {
-                printf("ERROR page flags: PC=%08lx size=%04x f1=%x f2=%x\n",
-                       (long)tb->pc, tb->size, flags1, flags2);
-            }
-        }
-    }
-}
-
-void tb_jmp_check(TranslationBlock *tb)
-{
-    TranslationBlock *tb1;
-    unsigned int n1;
-
-    /* suppress any remaining jumps to this TB */
-    tb1 = tb->jmp_first;
-    for(;;) {
-        n1 = (long)tb1 & 3;
-        tb1 = (TranslationBlock *)((long)tb1 & ~3);
-        if (n1 == 2)
-            break;
-        tb1 = tb1->jmp_next[n1];
-    }
-    /* check end of list */
-    if (tb1 != tb) {
-        printf("ERROR: jmp_list from 0x%08lx\n", (long)tb);
-    }
-}
-
-#endif
-
-/* invalidate one TB */
-static inline void tb_remove(TranslationBlock **ptb, TranslationBlock *tb,
-                             int next_offset)
-{
-    TranslationBlock *tb1;
-    for(;;) {
-        tb1 = *ptb;
-        if (tb1 == tb) {
-            *ptb = *(TranslationBlock **)((char *)tb1 + next_offset);
-            break;
-        }
-        ptb = (TranslationBlock **)((char *)tb1 + next_offset);
-    }
-}
-
-static inline void tb_page_remove(TranslationBlock **ptb, TranslationBlock *tb)
-{
-    TranslationBlock *tb1;
-    unsigned int n1;
-
-    for(;;) {
-        tb1 = *ptb;
-        n1 = (long)tb1 & 3;
-        tb1 = (TranslationBlock *)((long)tb1 & ~3);
-        if (tb1 == tb) {
-            *ptb = tb1->page_next[n1];
-            break;
-        }
-        ptb = &tb1->page_next[n1];
-    }
-}
-
-static inline void tb_jmp_remove(TranslationBlock *tb, int n)
-{
-    TranslationBlock *tb1, **ptb;
-    unsigned int n1;
-
-    ptb = &tb->jmp_next[n];
-    tb1 = *ptb;
-    if (tb1) {
-        /* find tb(n) in circular list */
-        for(;;) {
-            tb1 = *ptb;
-            n1 = (long)tb1 & 3;
-            tb1 = (TranslationBlock *)((long)tb1 & ~3);
-            if (n1 == n && tb1 == tb)
-                break;
-            if (n1 == 2) {
-                ptb = &tb1->jmp_first;
-            } else {
-                ptb = &tb1->jmp_next[n1];
-            }
-        }
-        /* now we can suppress tb(n) from the list */
-        *ptb = tb->jmp_next[n];
-
-        tb->jmp_next[n] = NULL;
-    }
-}
-
-/* reset the jump entry 'n' of a TB so that it is not chained to
-   another TB */
-static inline void tb_reset_jump(TranslationBlock *tb, int n)
-{
-    tb_set_jmp_target(tb, n, (unsigned long)(tb->tc_ptr + tb->tb_next_offset[n]));
-}
-
-void tb_phys_invalidate(TranslationBlock *tb, target_ulong page_addr)
-{
-    CPUState *env;
-    PageDesc *p;
-    unsigned int h, n1;
-    target_phys_addr_t phys_pc;
-    TranslationBlock *tb1, *tb2;
-
-    /* remove the TB from the hash list */
-    phys_pc = tb->page_addr[0] + (tb->pc & ~TARGET_PAGE_MASK);
-    h = tb_phys_hash_func(phys_pc);
-    tb_remove(&tb_phys_hash[h], tb,
-              offsetof(TranslationBlock, phys_hash_next));
-
-    /* remove the TB from the page list */
-    if (tb->page_addr[0] != page_addr) {
-        p = page_find(tb->page_addr[0] >> TARGET_PAGE_BITS);
-        tb_page_remove(&p->first_tb, tb);
-        invalidate_page_bitmap(p);
-    }
-    if (tb->page_addr[1] != -1 && tb->page_addr[1] != page_addr) {
-        p = page_find(tb->page_addr[1] >> TARGET_PAGE_BITS);
-        tb_page_remove(&p->first_tb, tb);
-        invalidate_page_bitmap(p);
-    }
-
-    tb_invalidated_flag = 1;
-
-    /* remove the TB from the hash list */
-    h = tb_jmp_cache_hash_func(tb->pc);
-    for(env = first_cpu; env != NULL; env = env->next_cpu) {
-        if (env->tb_jmp_cache[h] == tb)
-            env->tb_jmp_cache[h] = NULL;
-    }
-
-    /* suppress this TB from the two jump lists */
-    tb_jmp_remove(tb, 0);
-    tb_jmp_remove(tb, 1);
-
-    /* suppress any remaining jumps to this TB */
-    tb1 = tb->jmp_first;
-    for(;;) {
-        n1 = (long)tb1 & 3;
-        if (n1 == 2)
-            break;
-        tb1 = (TranslationBlock *)((long)tb1 & ~3);
-        tb2 = tb1->jmp_next[n1];
-        tb_reset_jump(tb1, n1);
-        tb1->jmp_next[n1] = NULL;
-        tb1 = tb2;
-    }
-    tb->jmp_first = (TranslationBlock *)((long)tb | 2); /* fail safe */
-
-    tb_phys_invalidate_count++;
-}
-
-static inline void set_bits(uint8_t *tab, int start, int len)
-{
-    int end, mask, end1;
-
-    end = start + len;
-    tab += start >> 3;
-    mask = 0xff << (start & 7);
-    if ((start & ~7) == (end & ~7)) {
-        if (start < end) {
-            mask &= ~(0xff << (end & 7));
-            *tab |= mask;
-        }
-    } else {
-        *tab++ |= mask;
-        start = (start + 8) & ~7;
-        end1 = end & ~7;
-        while (start < end1) {
-            *tab++ = 0xff;
-            start += 8;
-        }
-        if (start < end) {
-            mask = ~(0xff << (end & 7));
-            *tab |= mask;
-        }
-    }
-}
-
-static void build_page_bitmap(PageDesc *p)
-{
-    int n, tb_start, tb_end;
-    TranslationBlock *tb;
-
-    p->code_bitmap = qemu_mallocz(TARGET_PAGE_SIZE / 8);
-    if (!p->code_bitmap)
-        return;
-
-    tb = p->first_tb;
-    while (tb != NULL) {
-        n = (long)tb & 3;
-        tb = (TranslationBlock *)((long)tb & ~3);
-        /* NOTE: this is subtle as a TB may span two physical pages */
-        if (n == 0) {
-            /* NOTE: tb_end may be after the end of the page, but
-               it is not a problem */
-            tb_start = tb->pc & ~TARGET_PAGE_MASK;
-            tb_end = tb_start + tb->size;
-            if (tb_end > TARGET_PAGE_SIZE)
-                tb_end = TARGET_PAGE_SIZE;
-        } else {
-            tb_start = 0;
-            tb_end = ((tb->pc + tb->size) & ~TARGET_PAGE_MASK);
-        }
-        set_bits(p->code_bitmap, tb_start, tb_end - tb_start);
-        tb = tb->page_next[n];
-    }
-}
-
-TranslationBlock *tb_gen_code(CPUState *env,
-                              target_ulong pc, target_ulong cs_base,
-                              int flags, int cflags)
-{
-    TranslationBlock *tb;
-    uint8_t *tc_ptr;
-    target_ulong phys_pc, phys_page2, virt_page2;
-    int code_gen_size;
-
-    phys_pc = get_phys_addr_code(env, pc);
-    tb = tb_alloc(pc);
-    if (!tb) {
-        /* flush must be done */
-        tb_flush(env);
-        /* cannot fail at this point */
-        tb = tb_alloc(pc);
-        /* Don't forget to invalidate previous TB info.  */
-        tb_invalidated_flag = 1;
-    }
-    tc_ptr = code_gen_ptr;
-    tb->tc_ptr = tc_ptr;
-    tb->cs_base = cs_base;
-    tb->flags = flags;
-    tb->cflags = cflags;
-#ifdef CONFIG_TRACE
-    tb->bb_rec = NULL;
-    tb->prev_time = 0;
-#endif
-    cpu_gen_code(env, tb, &code_gen_size);
-    code_gen_ptr = (void *)(((unsigned long)code_gen_ptr + code_gen_size + CODE_GEN_ALIGN - 1) & ~(CODE_GEN_ALIGN - 1));
-
-    /* check next page if needed */
-    virt_page2 = (pc + tb->size - 1) & TARGET_PAGE_MASK;
-    phys_page2 = -1;
-    if ((pc & TARGET_PAGE_MASK) != virt_page2) {
-        phys_page2 = get_phys_addr_code(env, virt_page2);
-    }
-    tb_link_phys(tb, phys_pc, phys_page2);
-    return tb;
-}
-
-/* invalidate all TBs which intersect with the target physical page
-   starting in range [start;end[. NOTE: start and end must refer to
-   the same physical page. 'is_cpu_write_access' should be true if called
-   from a real cpu write access: the virtual CPU will exit the current
-   TB if code is modified inside this TB. */
-void tb_invalidate_phys_page_range(target_phys_addr_t start, target_phys_addr_t end,
-                                   int is_cpu_write_access)
-{
-    int n, current_tb_modified, current_tb_not_found, current_flags;
-    CPUState *env = cpu_single_env;
-    PageDesc *p;
-    TranslationBlock *tb, *tb_next, *current_tb, *saved_tb;
-    target_ulong tb_start, tb_end;
-    target_ulong current_pc, current_cs_base;
-
-    p = page_find(start >> TARGET_PAGE_BITS);
-    if (!p)
-        return;
-    if (!p->code_bitmap &&
-        ++p->code_write_count >= SMC_BITMAP_USE_THRESHOLD &&
-        is_cpu_write_access) {
-        /* build code bitmap */
-        build_page_bitmap(p);
-    }
-
-    /* we remove all the TBs in the range [start, end[ */
-    /* XXX: see if in some cases it could be faster to invalidate all the code */
-    current_tb_not_found = is_cpu_write_access;
-    current_tb_modified = 0;
-    current_tb = NULL; /* avoid warning */
-    current_pc = 0; /* avoid warning */
-    current_cs_base = 0; /* avoid warning */
-    current_flags = 0; /* avoid warning */
-    tb = p->first_tb;
-    while (tb != NULL) {
-        n = (long)tb & 3;
-        tb = (TranslationBlock *)((long)tb & ~3);
-        tb_next = tb->page_next[n];
-        /* NOTE: this is subtle as a TB may span two physical pages */
-        if (n == 0) {
-            /* NOTE: tb_end may be after the end of the page, but
-               it is not a problem */
-            tb_start = tb->page_addr[0] + (tb->pc & ~TARGET_PAGE_MASK);
-            tb_end = tb_start + tb->size;
-        } else {
-            tb_start = tb->page_addr[1];
-            tb_end = tb_start + ((tb->pc + tb->size) & ~TARGET_PAGE_MASK);
-        }
-        if (!(tb_end <= start || tb_start >= end)) {
-#ifdef TARGET_HAS_PRECISE_SMC
-            if (current_tb_not_found) {
-                current_tb_not_found = 0;
-                current_tb = NULL;
-                if (env->mem_io_pc) {
-                    /* now we have a real cpu fault */
-                    current_tb = tb_find_pc(env->mem_io_pc);
-                }
-            }
-            if (current_tb == tb &&
-                (current_tb->cflags & CF_COUNT_MASK) != 1) {
-                /* If we are modifying the current TB, we must stop
-                its execution. We could be more precise by checking
-                that the modification is after the current PC, but it
-                would require a specialized function to partially
-                restore the CPU state */
-
-                current_tb_modified = 1;
-                cpu_restore_state(current_tb, env,
-                                  env->mem_io_pc, NULL);
-#if defined(TARGET_I386)
-                current_flags = env->hflags;
-                current_flags |= (env->eflags & (IOPL_MASK | TF_MASK | VM_MASK));
-                current_cs_base = (target_ulong)env->segs[R_CS].base;
-                current_pc = current_cs_base + env->eip;
-#else
-#error unsupported CPU
-#endif
-            }
-#endif /* TARGET_HAS_PRECISE_SMC */
-            /* we need to do that to handle the case where a signal
-               occurs while doing tb_phys_invalidate() */
-            saved_tb = NULL;
-            if (env) {
-                saved_tb = env->current_tb;
-                env->current_tb = NULL;
-            }
-            tb_phys_invalidate(tb, -1);
-            if (env) {
-                env->current_tb = saved_tb;
-                if (env->interrupt_request && env->current_tb)
-                    cpu_interrupt(env, env->interrupt_request);
-            }
-        }
-        tb = tb_next;
-    }
-#if !defined(CONFIG_USER_ONLY)
-    /* if no code remaining, no need to continue to use slow writes */
-    if (!p->first_tb) {
-        invalidate_page_bitmap(p);
-        if (is_cpu_write_access) {
-            tlb_unprotect_code_phys(env, start, env->mem_io_vaddr);
-        }
-    }
-#endif
-#ifdef TARGET_HAS_PRECISE_SMC
-    if (current_tb_modified) {
-        /* we generate a block containing just the instruction
-           modifying the memory. It will ensure that it cannot modify
-           itself */
-        env->current_tb = NULL;
-        tb_gen_code(env, current_pc, current_cs_base, current_flags, 1);
-        cpu_resume_from_signal(env, NULL);
-    }
-#endif
-}
-
-/* len must be <= 8 and start must be a multiple of len */
-static inline void tb_invalidate_phys_page_fast(target_phys_addr_t start, int len)
-{
-    PageDesc *p;
-    int offset, b;
-#if 0
-    if (1) {
-        if (loglevel) {
-            fprintf(logfile, "modifying code at 0x%x size=%d EIP=%x PC=%08x\n",
-                   cpu_single_env->mem_io_vaddr, len,
-                   cpu_single_env->eip,
-                   cpu_single_env->eip + (long)cpu_single_env->segs[R_CS].base);
-        }
-    }
-#endif
-    p = page_find(start >> TARGET_PAGE_BITS);
-    if (!p)
-        return;
-    if (p->code_bitmap) {
-        offset = start & ~TARGET_PAGE_MASK;
-        b = p->code_bitmap[offset >> 3] >> (offset & 7);
-        if (b & ((1 << len) - 1))
-            goto do_invalidate;
-    } else {
-    do_invalidate:
-        tb_invalidate_phys_page_range(start, start + len, 1);
-    }
-}
-
-#if !defined(CONFIG_SOFTMMU)
-static void tb_invalidate_phys_page(target_phys_addr_t addr,
-                                    unsigned long pc, void *puc)
-{
-    int n, current_flags, current_tb_modified;
-    target_ulong current_pc, current_cs_base;
-    PageDesc *p;
-    TranslationBlock *tb, *current_tb;
-#ifdef TARGET_HAS_PRECISE_SMC
-    CPUState *env = cpu_single_env;
-#endif
-
-    addr &= TARGET_PAGE_MASK;
-    p = page_find(addr >> TARGET_PAGE_BITS);
-    if (!p)
-        return;
-    tb = p->first_tb;
-    current_tb_modified = 0;
-    current_tb = NULL;
-    current_pc = 0; /* avoid warning */
-    current_cs_base = 0; /* avoid warning */
-    current_flags = 0; /* avoid warning */
-#ifdef TARGET_HAS_PRECISE_SMC
-    if (tb && pc != 0) {
-        current_tb = tb_find_pc(pc);
-    }
-#endif
-    while (tb != NULL) {
-        n = (long)tb & 3;
-        tb = (TranslationBlock *)((long)tb & ~3);
-#ifdef TARGET_HAS_PRECISE_SMC
-        if (current_tb == tb &&
-            (current_tb->cflags & CF_COUNT_MASK) != 1) {
-                /* If we are modifying the current TB, we must stop
-                   its execution. We could be more precise by checking
-                   that the modification is after the current PC, but it
-                   would require a specialized function to partially
-                   restore the CPU state */
-
-            current_tb_modified = 1;
-            cpu_restore_state(current_tb, env, pc, puc);
-#if defined(TARGET_I386)
-            current_flags = env->hflags;
-            current_flags |= (env->eflags & (IOPL_MASK | TF_MASK | VM_MASK));
-            current_cs_base = (target_ulong)env->segs[R_CS].base;
-            current_pc = current_cs_base + env->eip;
-#else
-#error unsupported CPU
-#endif
-        }
-#endif /* TARGET_HAS_PRECISE_SMC */
-        tb_phys_invalidate(tb, addr);
-        tb = tb->page_next[n];
-    }
-    p->first_tb = NULL;
-#ifdef TARGET_HAS_PRECISE_SMC
-    if (current_tb_modified) {
-        /* we generate a block containing just the instruction
-           modifying the memory. It will ensure that it cannot modify
-           itself */
-        env->current_tb = NULL;
-        tb_gen_code(env, current_pc, current_cs_base, current_flags, 1);
-        cpu_resume_from_signal(env, puc);
-    }
-#endif
-}
-#endif
-
-/* add the tb in the target page and protect it if necessary */
-static inline void tb_alloc_page(TranslationBlock *tb,
-                                 unsigned int n, target_ulong page_addr)
-{
-    PageDesc *p;
-    TranslationBlock *last_first_tb;
-
-    tb->page_addr[n] = page_addr;
-    p = page_find_alloc(page_addr >> TARGET_PAGE_BITS);
-    tb->page_next[n] = p->first_tb;
-    last_first_tb = p->first_tb;
-    p->first_tb = (TranslationBlock *)((long)tb | n);
-    invalidate_page_bitmap(p);
-
-#if defined(TARGET_HAS_SMC) || 1
-
-#if defined(CONFIG_USER_ONLY)
-    if (p->flags & PAGE_WRITE) {
-        target_ulong addr;
-        PageDesc *p2;
-        int prot;
-
-        /* force the host page as non writable (writes will have a
-           page fault + mprotect overhead) */
-        page_addr &= qemu_host_page_mask;
-        prot = 0;
-        for(addr = page_addr; addr < page_addr + qemu_host_page_size;
-            addr += TARGET_PAGE_SIZE) {
-
-            p2 = page_find (addr >> TARGET_PAGE_BITS);
-            if (!p2)
-                continue;
-            prot |= p2->flags;
-            p2->flags &= ~PAGE_WRITE;
-            page_get_flags(addr);
-          }
-        mprotect(g2h(page_addr), qemu_host_page_size,
-                 (prot & PAGE_BITS) & ~PAGE_WRITE);
-#ifdef DEBUG_TB_INVALIDATE
-        printf("protecting code page: 0x" TARGET_FMT_lx "\n",
-               page_addr);
-#endif
-    }
-#else
-    /* if some code is already present, then the pages are already
-       protected. So we handle the case where only the first TB is
-       allocated in a physical page */
-    if (!last_first_tb) {
-        tlb_protect_code(page_addr);
-    }
-#endif
-
-#endif /* TARGET_HAS_SMC */
-}
-
-/* Allocate a new translation block. Flush the translation buffer if
-   too many translation blocks or too much generated code. */
-TranslationBlock *tb_alloc(target_ulong pc)
-{
-    TranslationBlock *tb;
-
-    if (nb_tbs >= code_gen_max_blocks ||
-        (code_gen_ptr - code_gen_buffer) >= code_gen_buffer_max_size)
-        return NULL;
-    tb = &tbs[nb_tbs++];
-    tb->pc = pc;
-    tb->cflags = 0;
-    return tb;
-}
-
-void tb_free(TranslationBlock *tb)
-{
-    /* In practice this is mostly used for single use temporary TB
-       Ignore the hard cases and just back up if this TB happens to
-       be the last one generated.  */
-    if (nb_tbs > 0 && tb == &tbs[nb_tbs - 1]) {
-        code_gen_ptr = tb->tc_ptr;
-        nb_tbs--;
-    }
-}
-
-/* add a new TB and link it to the physical page tables. phys_page2 is
-   (-1) to indicate that only one page contains the TB. */
-void tb_link_phys(TranslationBlock *tb,
-                  target_ulong phys_pc, target_ulong phys_page2)
-{
-    unsigned int h;
-    TranslationBlock **ptb;
-
-    /* Grab the mmap lock to stop another thread invalidating this TB
-       before we are done.  */
-    mmap_lock();
-    /* add in the physical hash table */
-    h = tb_phys_hash_func(phys_pc);
-    ptb = &tb_phys_hash[h];
-    tb->phys_hash_next = *ptb;
-    *ptb = tb;
-
-    /* add in the page list */
-    tb_alloc_page(tb, 0, phys_pc & TARGET_PAGE_MASK);
-    if (phys_page2 != -1)
-        tb_alloc_page(tb, 1, phys_page2);
-    else
-        tb->page_addr[1] = -1;
-
-    tb->jmp_first = (TranslationBlock *)((long)tb | 2);
-    tb->jmp_next[0] = NULL;
-    tb->jmp_next[1] = NULL;
-
-    /* init original jump addresses */
-    if (tb->tb_next_offset[0] != 0xffff)
-        tb_reset_jump(tb, 0);
-    if (tb->tb_next_offset[1] != 0xffff)
-        tb_reset_jump(tb, 1);
-
-#ifdef DEBUG_TB_CHECK
-    tb_page_check();
-#endif
-    mmap_unlock();
-}
-
-/* find the TB 'tb' such that tb[0].tc_ptr <= tc_ptr <
-   tb[1].tc_ptr. Return NULL if not found */
-TranslationBlock *tb_find_pc(unsigned long tc_ptr)
-{
-    int m_min, m_max, m;
-    unsigned long v;
-    TranslationBlock *tb;
-
-    if (nb_tbs <= 0)
-        return NULL;
-    if (tc_ptr < (unsigned long)code_gen_buffer ||
-        tc_ptr >= (unsigned long)code_gen_ptr)
-        return NULL;
-    /* binary search (cf Knuth) */
-    m_min = 0;
-    m_max = nb_tbs - 1;
-    while (m_min <= m_max) {
-        m = (m_min + m_max) >> 1;
-        tb = &tbs[m];
-        v = (unsigned long)tb->tc_ptr;
-        if (v == tc_ptr)
-            return tb;
-        else if (tc_ptr < v) {
-            m_max = m - 1;
-        } else {
-            m_min = m + 1;
-        }
-    }
-    return &tbs[m_max];
-}
-
-static void tb_reset_jump_recursive(TranslationBlock *tb);
-
-static inline void tb_reset_jump_recursive2(TranslationBlock *tb, int n)
-{
-    TranslationBlock *tb1, *tb_next, **ptb;
-    unsigned int n1;
-
-    tb1 = tb->jmp_next[n];
-    if (tb1 != NULL) {
-        /* find head of list */
-        for(;;) {
-            n1 = (long)tb1 & 3;
-            tb1 = (TranslationBlock *)((long)tb1 & ~3);
-            if (n1 == 2)
-                break;
-            tb1 = tb1->jmp_next[n1];
-        }
-        /* we are now sure now that tb jumps to tb1 */
-        tb_next = tb1;
-
-        /* remove tb from the jmp_first list */
-        ptb = &tb_next->jmp_first;
-        for(;;) {
-            tb1 = *ptb;
-            n1 = (long)tb1 & 3;
-            tb1 = (TranslationBlock *)((long)tb1 & ~3);
-            if (n1 == n && tb1 == tb)
-                break;
-            ptb = &tb1->jmp_next[n1];
-        }
-        *ptb = tb->jmp_next[n];
-        tb->jmp_next[n] = NULL;
-
-        /* suppress the jump to next tb in generated code */
-        tb_reset_jump(tb, n);
-
-        /* suppress jumps in the tb on which we could have jumped */
-        tb_reset_jump_recursive(tb_next);
-    }
-}
-
-static void tb_reset_jump_recursive(TranslationBlock *tb)
-{
-    tb_reset_jump_recursive2(tb, 0);
-    tb_reset_jump_recursive2(tb, 1);
-}
-
-#if defined(TARGET_HAS_ICE)
-static void breakpoint_invalidate(CPUState *env, target_ulong pc)
-{
-    target_phys_addr_t addr;
-    target_ulong pd;
-    ram_addr_t ram_addr;
-    PhysPageDesc *p;
-
-    addr = cpu_get_phys_page_debug(env, pc);
-    p = phys_page_find(addr >> TARGET_PAGE_BITS);
-    if (!p) {
-        pd = IO_MEM_UNASSIGNED;
-    } else {
-        pd = p->phys_offset;
-    }
-    ram_addr = (pd & TARGET_PAGE_MASK) | (pc & ~TARGET_PAGE_MASK);
-    tb_invalidate_phys_page_range(ram_addr, ram_addr + 1, 0);
-}
-#endif
-
-/* Add a watchpoint.  */
-int cpu_watchpoint_insert(CPUState *env, target_ulong addr, int type)
-{
-    int i;
-
-    for (i = 0; i < env->nb_watchpoints; i++) {
-        if (addr == env->watchpoint[i].vaddr)
-            return 0;
-    }
-    if (env->nb_watchpoints >= MAX_WATCHPOINTS)
-        return -1;
-
-    i = env->nb_watchpoints++;
-    env->watchpoint[i].vaddr = addr;
-    env->watchpoint[i].type = type;
-    tlb_flush_page(env, addr);
-    /* FIXME: This flush is needed because of the hack to make memory ops
-       terminate the TB.  It can be removed once the proper IO trap and
-       re-execute bits are in.  */
-    tb_flush(env);
-    return i;
-}
-
-/* Remove a watchpoint.  */
-int cpu_watchpoint_remove(CPUState *env, target_ulong addr)
-{
-    int i;
-
-    for (i = 0; i < env->nb_watchpoints; i++) {
-        if (addr == env->watchpoint[i].vaddr) {
-            env->nb_watchpoints--;
-            env->watchpoint[i] = env->watchpoint[env->nb_watchpoints];
-            tlb_flush_page(env, addr);
-            return 0;
-        }
-    }
-    return -1;
-}
-
-/* Remove all watchpoints. */
-void cpu_watchpoint_remove_all(CPUState *env) {
-    int i;
-
-    for (i = 0; i < env->nb_watchpoints; i++) {
-        tlb_flush_page(env, env->watchpoint[i].vaddr);
-    }
-    env->nb_watchpoints = 0;
-}
-
-/* add a breakpoint. EXCP_DEBUG is returned by the CPU loop if a
-   breakpoint is reached */
-int cpu_breakpoint_insert(CPUState *env, target_ulong pc)
-{
-#if defined(TARGET_HAS_ICE)
-    int i;
-
-    for(i = 0; i < env->nb_breakpoints; i++) {
-        if (env->breakpoints[i] == pc)
-            return 0;
-    }
-
-    if (env->nb_breakpoints >= MAX_BREAKPOINTS)
-        return -1;
-    env->breakpoints[env->nb_breakpoints++] = pc;
-
-    breakpoint_invalidate(env, pc);
-    return 0;
-#else
-    return -1;
-#endif
-}
-
-/* remove all breakpoints */
-void cpu_breakpoint_remove_all(CPUState *env) {
-#if defined(TARGET_HAS_ICE)
-    int i;
-    for(i = 0; i < env->nb_breakpoints; i++) {
-        breakpoint_invalidate(env, env->breakpoints[i]);
-    }
-    env->nb_breakpoints = 0;
-#endif
-}
-
-/* remove a breakpoint */
-int cpu_breakpoint_remove(CPUState *env, target_ulong pc)
-{
-#if defined(TARGET_HAS_ICE)
-    int i;
-    for(i = 0; i < env->nb_breakpoints; i++) {
-        if (env->breakpoints[i] == pc)
-            goto found;
-    }
-    return -1;
- found:
-    env->nb_breakpoints--;
-    if (i < env->nb_breakpoints)
-      env->breakpoints[i] = env->breakpoints[env->nb_breakpoints];
-
-    breakpoint_invalidate(env, pc);
-    return 0;
-#else
-    return -1;
-#endif
-}
-
-/* enable or disable single step mode. EXCP_DEBUG is returned by the
-   CPU loop after each instruction */
-void cpu_single_step(CPUState *env, int enabled)
-{
-#if defined(TARGET_HAS_ICE)
-    if (env->singlestep_enabled != enabled) {
-        env->singlestep_enabled = enabled;
-        /* must flush all the translated code to avoid inconsistancies */
-        /* XXX: only flush what is necessary */
-        tb_flush(env);
-    }
-#endif
-}
-
-/* enable or disable low levels log */
-void cpu_set_log(int log_flags)
-{
-    loglevel = log_flags;
-    if (loglevel && !logfile) {
-        logfile = fopen(logfilename, log_append ? "a" : "w");
-        if (!logfile) {
-            perror(logfilename);
-            _exit(1);
-        }
-#if !defined(CONFIG_SOFTMMU)
-        /* must avoid mmap() usage of glibc by setting a buffer "by hand" */
-        {
-            static uint8_t logfile_buf[4096];
-            setvbuf(logfile, logfile_buf, _IOLBF, sizeof(logfile_buf));
-        }
-#else
-        setvbuf(logfile, NULL, _IOLBF, 0);
-#endif
-        log_append = 1;
-    }
-    if (!loglevel && logfile) {
-        fclose(logfile);
-        logfile = NULL;
-    }
-}
-
-void cpu_set_log_filename(const char *filename)
-{
-    logfilename = strdup(filename);
-    if (logfile) {
-        fclose(logfile);
-        logfile = NULL;
-    }
-    cpu_set_log(loglevel);
-}
-
-/* mask must never be zero, except for A20 change call */
-void cpu_interrupt(CPUState *env, int mask)
-{
-#if !defined(USE_NPTL)
-    TranslationBlock *tb;
-    static spinlock_t interrupt_lock = SPIN_LOCK_UNLOCKED;
-#endif
-    int old_mask;
-
-    old_mask = env->interrupt_request;
-    /* FIXME: This is probably not threadsafe.  A different thread could
-       be in the middle of a read-modify-write operation.  */
-    env->interrupt_request |= mask;
-#if defined(USE_NPTL)
-    /* FIXME: TB unchaining isn't SMP safe.  For now just ignore the
-       problem and hope the cpu will stop of its own accord.  For userspace
-       emulation this often isn't actually as bad as it sounds.  Often
-       signals are used primarily to interrupt blocking syscalls.  */
-#else
-    if (use_icount) {
-        env->icount_decr.u16.high = 0xffff;
-#ifndef CONFIG_USER_ONLY
-        /* CPU_INTERRUPT_EXIT isn't a real interrupt.  It just means
-           an async event happened and we need to process it.  */
-        if (!can_do_io(env)
-            && (mask & ~(old_mask | CPU_INTERRUPT_EXIT)) != 0) {
-            cpu_abort(env, "Raised interrupt while not in I/O function");
-        }
-#endif
-    } else {
-        tb = env->current_tb;
-        /* if the cpu is currently executing code, we must unlink it and
-           all the potentially executing TB */
-        if (tb && !testandset(&interrupt_lock)) {
-            env->current_tb = NULL;
-            tb_reset_jump_recursive(tb);
-            resetlock(&interrupt_lock);
-        }
-    }
-#endif
-}
-
-void cpu_reset_interrupt(CPUState *env, int mask)
-{
-    env->interrupt_request &= ~mask;
-}
-
-CPULogItem cpu_log_items[] = {
-    { CPU_LOG_TB_OUT_ASM, "out_asm",
-      "show generated host assembly code for each compiled TB" },
-    { CPU_LOG_TB_IN_ASM, "in_asm",
-      "show target assembly code for each compiled TB" },
-    { CPU_LOG_TB_OP, "op",
-      "show micro ops for each compiled TB" },
-    { CPU_LOG_TB_OP_OPT, "op_opt",
-      "show micro ops "
-#ifdef TARGET_I386
-      "before eflags optimization and "
-#endif
-      "after liveness analysis" },
-    { CPU_LOG_INT, "int",
-      "show interrupts/exceptions in short format" },
-    { CPU_LOG_EXEC, "exec",
-      "show trace before each executed TB (lots of logs)" },
-    { CPU_LOG_TB_CPU, "cpu",
-      "show CPU state before block translation" },
-#ifdef TARGET_I386
-    { CPU_LOG_PCALL, "pcall",
-      "show protected mode far calls/returns/exceptions" },
-#endif
-#ifdef DEBUG_IOPORT
-    { CPU_LOG_IOPORT, "ioport",
-      "show all i/o ports accesses" },
-#endif
-    { 0, NULL, NULL },
-};
-
-static int cmp1(const char *s1, int n, const char *s2)
-{
-    if (strlen(s2) != n)
-        return 0;
-    return memcmp(s1, s2, n) == 0;
-}
-
-/* takes a comma separated list of log masks. Return 0 if error. */
-int cpu_str_to_log_mask(const char *str)
-{
-    CPULogItem *item;
-    int mask;
-    const char *p, *p1;
-
-    p = str;
-    mask = 0;
-    for(;;) {
-        p1 = strchr(p, ',');
-        if (!p1)
-            p1 = p + strlen(p);
-	if(cmp1(p,p1-p,"all")) {
-		for(item = cpu_log_items; item->mask != 0; item++) {
-			mask |= item->mask;
-		}
-	} else {
-        for(item = cpu_log_items; item->mask != 0; item++) {
-            if (cmp1(p, p1 - p, item->name))
-                goto found;
-        }
-        return 0;
-	}
-    found:
-        mask |= item->mask;
-        if (*p1 != ',')
-            break;
-        p = p1 + 1;
-    }
-    return mask;
-}
-
-void cpu_abort(CPUState *env, const char *fmt, ...)
-{
-    va_list ap;
-    va_list ap2;
-
-    va_start(ap, fmt);
-    va_copy(ap2, ap);
-    fprintf(stderr, "qemu: fatal: ");
-    vfprintf(stderr, fmt, ap);
-    fprintf(stderr, "\n");
-#ifdef TARGET_I386
-    cpu_dump_state(env, stderr, fprintf, X86_DUMP_FPU | X86_DUMP_CCOP);
-#else
-    cpu_dump_state(env, stderr, fprintf, 0);
-#endif
-    if (logfile) {
-        fprintf(logfile, "qemu: fatal: ");
-        vfprintf(logfile, fmt, ap2);
-        fprintf(logfile, "\n");
-#ifdef TARGET_I386
-        cpu_dump_state(env, logfile, fprintf, X86_DUMP_FPU | X86_DUMP_CCOP);
-#else
-        cpu_dump_state(env, logfile, fprintf, 0);
-#endif
-        fflush(logfile);
-        fclose(logfile);
-    }
-    va_end(ap2);
-    va_end(ap);
-    abort();
-}
-
-CPUState *cpu_copy(CPUState *env)
-{
-    CPUState *new_env = cpu_init(env->cpu_model_str);
-    /* preserve chaining and index */
-    CPUState *next_cpu = new_env->next_cpu;
-    int cpu_index = new_env->cpu_index;
-    memcpy(new_env, env, sizeof(CPUState));
-    new_env->next_cpu = next_cpu;
-    new_env->cpu_index = cpu_index;
-    return new_env;
-}
-
-#if !defined(CONFIG_USER_ONLY)
-
-static inline void tlb_flush_jmp_cache(CPUState *env, target_ulong addr)
-{
-    unsigned int i;
-
-    /* Discard jump cache entries for any tb which might potentially
-       overlap the flushed page.  */
-    i = tb_jmp_cache_hash_page(addr - TARGET_PAGE_SIZE);
-    memset (&env->tb_jmp_cache[i], 0, 
-	    TB_JMP_PAGE_SIZE * sizeof(TranslationBlock *));
-
-    i = tb_jmp_cache_hash_page(addr);
-    memset (&env->tb_jmp_cache[i], 0, 
-	    TB_JMP_PAGE_SIZE * sizeof(TranslationBlock *));
-}
-
-/* NOTE: if flush_global is true, also flush global entries (not
-   implemented yet) */
-void tlb_flush(CPUState *env, int flush_global)
-{
-    int i;
-
-#if defined(DEBUG_TLB)
-    printf("tlb_flush:\n");
-#endif
-    /* must reset current TB so that interrupts cannot modify the
-       links while we are modifying them */
-    env->current_tb = NULL;
-
-    for(i = 0; i < CPU_TLB_SIZE; i++) {
-        env->tlb_table[0][i].addr_read = -1;
-        env->tlb_table[0][i].addr_write = -1;
-        env->tlb_table[0][i].addr_code = -1;
-        env->tlb_table[1][i].addr_read = -1;
-        env->tlb_table[1][i].addr_write = -1;
-        env->tlb_table[1][i].addr_code = -1;
-#if (NB_MMU_MODES >= 3)
-        env->tlb_table[2][i].addr_read = -1;
-        env->tlb_table[2][i].addr_write = -1;
-        env->tlb_table[2][i].addr_code = -1;
-#if (NB_MMU_MODES == 4)
-        env->tlb_table[3][i].addr_read = -1;
-        env->tlb_table[3][i].addr_write = -1;
-        env->tlb_table[3][i].addr_code = -1;
-#endif
-#endif
-    }
-
-    memset (env->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof (void *));
-
-#ifdef USE_KQEMU
-    if (env->kqemu_enabled) {
-        kqemu_flush(env, flush_global);
-    }
-#endif
-    tlb_flush_count++;
-}
-
-static inline void tlb_flush_entry(CPUTLBEntry *tlb_entry, target_ulong addr)
-{
-    if (addr == (tlb_entry->addr_read &
-                 (TARGET_PAGE_MASK | TLB_INVALID_MASK)) ||
-        addr == (tlb_entry->addr_write &
-                 (TARGET_PAGE_MASK | TLB_INVALID_MASK)) ||
-        addr == (tlb_entry->addr_code &
-                 (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
-        tlb_entry->addr_read = -1;
-        tlb_entry->addr_write = -1;
-        tlb_entry->addr_code = -1;
-    }
-}
-
-void tlb_flush_page(CPUState *env, target_ulong addr)
-{
-    int i;
-
-#if defined(DEBUG_TLB)
-    printf("tlb_flush_page: " TARGET_FMT_lx "\n", addr);
-#endif
-    /* must reset current TB so that interrupts cannot modify the
-       links while we are modifying them */
-    env->current_tb = NULL;
-
-    addr &= TARGET_PAGE_MASK;
-    i = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
-    tlb_flush_entry(&env->tlb_table[0][i], addr);
-    tlb_flush_entry(&env->tlb_table[1][i], addr);
-#if (NB_MMU_MODES >= 3)
-    tlb_flush_entry(&env->tlb_table[2][i], addr);
-#if (NB_MMU_MODES == 4)
-    tlb_flush_entry(&env->tlb_table[3][i], addr);
-#endif
-#endif
-
-    tlb_flush_jmp_cache(env, addr);
-
-#ifdef USE_KQEMU
-    if (env->kqemu_enabled) {
-        kqemu_flush_page(env, addr);
-    }
-#endif
-}
-
-/* update the TLBs so that writes to code in the virtual page 'addr'
-   can be detected */
-static void tlb_protect_code(ram_addr_t ram_addr)
-{
-    cpu_physical_memory_reset_dirty(ram_addr,
-                                    ram_addr + TARGET_PAGE_SIZE,
-                                    CODE_DIRTY_FLAG);
-}
-
-/* update the TLB so that writes in physical page 'phys_addr' are no longer
-   tested for self modifying code */
-static void tlb_unprotect_code_phys(CPUState *env, ram_addr_t ram_addr,
-                                    target_ulong vaddr)
-{
-    phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS] |= CODE_DIRTY_FLAG;
-}
-
-static inline void tlb_reset_dirty_range(CPUTLBEntry *tlb_entry,
-                                         unsigned long start, unsigned long length)
-{
-    unsigned long addr;
-    if ((tlb_entry->addr_write & ~TARGET_PAGE_MASK) == IO_MEM_RAM) {
-        addr = (tlb_entry->addr_write & TARGET_PAGE_MASK) + tlb_entry->addend;
-        if ((addr - start) < length) {
-            tlb_entry->addr_write = (tlb_entry->addr_write & TARGET_PAGE_MASK) | TLB_NOTDIRTY;
-        }
-    }
-}
-
-void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
-                                     int dirty_flags)
-{
-    CPUState *env;
-    unsigned long length, start1;
-    int i, mask, len;
-    uint8_t *p;
-
-    start &= TARGET_PAGE_MASK;
-    end = TARGET_PAGE_ALIGN(end);
-
-    length = end - start;
-    if (length == 0)
-        return;
-    len = length >> TARGET_PAGE_BITS;
-#ifdef USE_KQEMU
-    /* XXX: should not depend on cpu context */
-    env = first_cpu;
-    if (env->kqemu_enabled) {
-        ram_addr_t addr;
-        addr = start;
-        for(i = 0; i < len; i++) {
-            kqemu_set_notdirty(env, addr);
-            addr += TARGET_PAGE_SIZE;
-        }
-    }
-#endif
-    mask = ~dirty_flags;
-    p = phys_ram_dirty + (start >> TARGET_PAGE_BITS);
-    for(i = 0; i < len; i++)
-        p[i] &= mask;
-
-    /* we modify the TLB cache so that the dirty bit will be set again
-       when accessing the range */
-    start1 = start + (unsigned long)phys_ram_base;
-    for(env = first_cpu; env != NULL; env = env->next_cpu) {
-        for(i = 0; i < CPU_TLB_SIZE; i++)
-            tlb_reset_dirty_range(&env->tlb_table[0][i], start1, length);
-        for(i = 0; i < CPU_TLB_SIZE; i++)
-            tlb_reset_dirty_range(&env->tlb_table[1][i], start1, length);
-#if (NB_MMU_MODES >= 3)
-        for(i = 0; i < CPU_TLB_SIZE; i++)
-            tlb_reset_dirty_range(&env->tlb_table[2][i], start1, length);
-#if (NB_MMU_MODES == 4)
-        for(i = 0; i < CPU_TLB_SIZE; i++)
-            tlb_reset_dirty_range(&env->tlb_table[3][i], start1, length);
-#endif
-#endif
-    }
-}
-
-static inline void tlb_update_dirty(CPUTLBEntry *tlb_entry)
-{
-    ram_addr_t ram_addr;
-
-    if ((tlb_entry->addr_write & ~TARGET_PAGE_MASK) == IO_MEM_RAM) {
-        ram_addr = (tlb_entry->addr_write & TARGET_PAGE_MASK) +
-            tlb_entry->addend - (unsigned long)phys_ram_base;
-        if (!cpu_physical_memory_is_dirty(ram_addr)) {
-            tlb_entry->addr_write |= TLB_NOTDIRTY;
-        }
-    }
-}
-
-/* update the TLB according to the current state of the dirty bits */
-void cpu_tlb_update_dirty(CPUState *env)
-{
-    int i;
-    for(i = 0; i < CPU_TLB_SIZE; i++)
-        tlb_update_dirty(&env->tlb_table[0][i]);
-    for(i = 0; i < CPU_TLB_SIZE; i++)
-        tlb_update_dirty(&env->tlb_table[1][i]);
-#if (NB_MMU_MODES >= 3)
-    for(i = 0; i < CPU_TLB_SIZE; i++)
-        tlb_update_dirty(&env->tlb_table[2][i]);
-#if (NB_MMU_MODES == 4)
-    for(i = 0; i < CPU_TLB_SIZE; i++)
-        tlb_update_dirty(&env->tlb_table[3][i]);
-#endif
-#endif
-}
-
-static inline void tlb_set_dirty1(CPUTLBEntry *tlb_entry, target_ulong vaddr)
-{
-    if (tlb_entry->addr_write == (vaddr | TLB_NOTDIRTY))
-        tlb_entry->addr_write = vaddr;
-}
-
-/* update the TLB corresponding to virtual page vaddr
-   so that it is no longer dirty */
-static inline void tlb_set_dirty(CPUState *env, target_ulong vaddr)
-{
-    int i;
-
-    vaddr &= TARGET_PAGE_MASK;
-    i = (vaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
-    tlb_set_dirty1(&env->tlb_table[0][i], vaddr);
-    tlb_set_dirty1(&env->tlb_table[1][i], vaddr);
-#if (NB_MMU_MODES >= 3)
-    tlb_set_dirty1(&env->tlb_table[2][i], vaddr);
-#if (NB_MMU_MODES == 4)
-    tlb_set_dirty1(&env->tlb_table[3][i], vaddr);
-#endif
-#endif
-}
-
-/* add a new TLB entry. At most one entry for a given virtual address
-   is permitted. Return 0 if OK or 2 if the page could not be mapped
-   (can only happen in non SOFTMMU mode for I/O pages or pages
-   conflicting with the host address space). */
-int tlb_set_page_exec(CPUState *env, target_ulong vaddr,
-                      target_phys_addr_t paddr, int prot,
-                      int mmu_idx, int is_softmmu)
-{
-    PhysPageDesc *p;
-    unsigned long pd;
-    unsigned int index;
-    target_ulong address;
-    target_ulong code_address;
-    target_phys_addr_t addend;
-    int ret;
-    CPUTLBEntry *te;
-    int i;
-    target_phys_addr_t iotlb;
-
-    p = phys_page_find(paddr >> TARGET_PAGE_BITS);
-    if (!p) {
-        pd = IO_MEM_UNASSIGNED;
-    } else {
-        pd = p->phys_offset;
-    }
-#if defined(DEBUG_TLB)
-    printf("tlb_set_page: vaddr=" TARGET_FMT_lx " paddr=0x%08x prot=%x idx=%d smmu=%d pd=0x%08lx\n",
-           vaddr, (int)paddr, prot, mmu_idx, is_softmmu, pd);
-#endif
-
-    ret = 0;
-    address = vaddr;
-    if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM && !(pd & IO_MEM_ROMD)) {
-        /* IO memory case (romd handled later) */
-        address |= TLB_MMIO;
-    }
-    addend = (target_phys_addr_t)phys_ram_base + (pd & TARGET_PAGE_MASK);
-    if ((pd & ~TARGET_PAGE_MASK) <= IO_MEM_ROM) {
-        /* Normal RAM.  */
-        iotlb = pd & TARGET_PAGE_MASK;
-        if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_RAM)
-            iotlb |= IO_MEM_NOTDIRTY;
-        else
-            iotlb |= IO_MEM_ROM;
-    } else {
-        /* IO handlers are currently passed a phsical address.
-           It would be nice to pass an offset from the base address
-           of that region.  This would avoid having to special case RAM,
-           and avoid full address decoding in every device.
-           We can't use the high bits of pd for this because
-           IO_MEM_ROMD uses these as a ram address.  */
-        iotlb = (pd & ~TARGET_PAGE_MASK) + paddr;
-    }
-
-    code_address = address;
-    /* Make accesses to pages with watchpoints go via the
-       watchpoint trap routines.  */
-    for (i = 0; i < env->nb_watchpoints; i++) {
-        if (vaddr == (env->watchpoint[i].vaddr & TARGET_PAGE_MASK)) {
-            iotlb = io_mem_watch + paddr;
-            /* TODO: The memory case can be optimized by not trapping
-               reads of pages with a write breakpoint.  */
-            address |= TLB_MMIO;
-        }
-    }
-
-    index = (vaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
-    env->iotlb[mmu_idx][index] = iotlb - vaddr;
-    te = &env->tlb_table[mmu_idx][index];
-    te->addend = addend - vaddr;
-    if (prot & PAGE_READ) {
-        te->addr_read = address;
-    } else {
-        te->addr_read = -1;
-    }
-
-    if (prot & PAGE_EXEC) {
-        te->addr_code = code_address;
-    } else {
-        te->addr_code = -1;
-    }
-    if (prot & PAGE_WRITE) {
-        if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_ROM ||
-            (pd & IO_MEM_ROMD)) {
-            /* Write access calls the I/O callback.  */
-            te->addr_write = address | TLB_MMIO;
-        } else if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_RAM &&
-                   !cpu_physical_memory_is_dirty(pd)) {
-            te->addr_write = address | TLB_NOTDIRTY;
-        } else {
-            te->addr_write = address;
-        }
-    } else {
-        te->addr_write = -1;
-    }
-    return ret;
-}
-
-#else
-
-void tlb_flush(CPUState *env, int flush_global)
-{
-}
-
-void tlb_flush_page(CPUState *env, target_ulong addr)
-{
-}
-
-int tlb_set_page_exec(CPUState *env, target_ulong vaddr,
-                      target_phys_addr_t paddr, int prot,
-                      int mmu_idx, int is_softmmu)
-{
-    return 0;
-}
-
-/* dump memory mappings */
-void page_dump(FILE *f)
-{
-    unsigned long start, end;
-    int i, j, prot, prot1;
-    PageDesc *p;
-
-    fprintf(f, "%-8s %-8s %-8s %s\n",
-            "start", "end", "size", "prot");
-    start = -1;
-    end = -1;
-    prot = 0;
-    for(i = 0; i <= L1_SIZE; i++) {
-        if (i < L1_SIZE)
-            p = l1_map[i];
-        else
-            p = NULL;
-        for(j = 0;j < L2_SIZE; j++) {
-            if (!p)
-                prot1 = 0;
-            else
-                prot1 = p[j].flags;
-            if (prot1 != prot) {
-                end = (i << (32 - L1_BITS)) | (j << TARGET_PAGE_BITS);
-                if (start != -1) {
-                    fprintf(f, "%08lx-%08lx %08lx %c%c%c\n",
-                            start, end, end - start,
-                            prot & PAGE_READ ? 'r' : '-',
-                            prot & PAGE_WRITE ? 'w' : '-',
-                            prot & PAGE_EXEC ? 'x' : '-');
-                }
-                if (prot1 != 0)
-                    start = end;
-                else
-                    start = -1;
-                prot = prot1;
-            }
-            if (!p)
-                break;
-        }
-    }
-}
-
-int page_get_flags(target_ulong address)
-{
-    PageDesc *p;
-
-    p = page_find(address >> TARGET_PAGE_BITS);
-    if (!p)
-        return 0;
-    return p->flags;
-}
-
-/* modify the flags of a page and invalidate the code if
-   necessary. The flag PAGE_WRITE_ORG is positionned automatically
-   depending on PAGE_WRITE */
-void page_set_flags(target_ulong start, target_ulong end, int flags)
-{
-    PageDesc *p;
-    target_ulong addr;
-
-    /* mmap_lock should already be held.  */
-    start = start & TARGET_PAGE_MASK;
-    end = TARGET_PAGE_ALIGN(end);
-    if (flags & PAGE_WRITE)
-        flags |= PAGE_WRITE_ORG;
-    for(addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
-        p = page_find_alloc(addr >> TARGET_PAGE_BITS);
-        /* We may be called for host regions that are outside guest
-           address space.  */
-        if (!p)
-            return;
-        /* if the write protection is set, then we invalidate the code
-           inside */
-        if (!(p->flags & PAGE_WRITE) &&
-            (flags & PAGE_WRITE) &&
-            p->first_tb) {
-            tb_invalidate_phys_page(addr, 0, NULL);
-        }
-        p->flags = flags;
-    }
-}
-
-int page_check_range(target_ulong start, target_ulong len, int flags)
-{
-    PageDesc *p;
-    target_ulong end;
-    target_ulong addr;
-
-    end = TARGET_PAGE_ALIGN(start+len); /* must do before we loose bits in the next step */
-    start = start & TARGET_PAGE_MASK;
-
-    if( end < start )
-        /* we've wrapped around */
-        return -1;
-    for(addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
-        p = page_find(addr >> TARGET_PAGE_BITS);
-        if( !p )
-            return -1;
-        if( !(p->flags & PAGE_VALID) )
-            return -1;
-
-        if ((flags & PAGE_READ) && !(p->flags & PAGE_READ))
-            return -1;
-        if (flags & PAGE_WRITE) {
-            if (!(p->flags & PAGE_WRITE_ORG))
-                return -1;
-            /* unprotect the page if it was put read-only because it
-               contains translated code */
-            if (!(p->flags & PAGE_WRITE)) {
-                if (!page_unprotect(addr, 0, NULL))
-                    return -1;
-            }
-            return 0;
-        }
-    }
-    return 0;
-}
-
-/* called from signal handler: invalidate the code and unprotect the
-   page. Return TRUE if the fault was succesfully handled. */
-int page_unprotect(target_ulong address, unsigned long pc, void *puc)
-{
-    unsigned int page_index, prot, pindex;
-    PageDesc *p, *p1;
-    target_ulong host_start, host_end, addr;
-
-    /* Technically this isn't safe inside a signal handler.  However we
-       know this only ever happens in a synchronous SEGV handler, so in
-       practice it seems to be ok.  */
-    mmap_lock();
-
-    host_start = address & qemu_host_page_mask;
-    page_index = host_start >> TARGET_PAGE_BITS;
-    p1 = page_find(page_index);
-    if (!p1) {
-        mmap_unlock();
-        return 0;
-    }
-    host_end = host_start + qemu_host_page_size;
-    p = p1;
-    prot = 0;
-    for(addr = host_start;addr < host_end; addr += TARGET_PAGE_SIZE) {
-        prot |= p->flags;
-        p++;
-    }
-    /* if the page was really writable, then we change its
-       protection back to writable */
-    if (prot & PAGE_WRITE_ORG) {
-        pindex = (address - host_start) >> TARGET_PAGE_BITS;
-        if (!(p1[pindex].flags & PAGE_WRITE)) {
-            mprotect((void *)g2h(host_start), qemu_host_page_size,
-                     (prot & PAGE_BITS) | PAGE_WRITE);
-            p1[pindex].flags |= PAGE_WRITE;
-            /* and since the content will be modified, we must invalidate
-               the corresponding translated code. */
-            tb_invalidate_phys_page(address, pc, puc);
-#ifdef DEBUG_TB_CHECK
-            tb_invalidate_check(address);
-#endif
-            mmap_unlock();
-            return 1;
-        }
-    }
-    mmap_unlock();
-    return 0;
-}
-
-static inline void tlb_set_dirty(CPUState *env,
-                                 unsigned long addr, target_ulong vaddr)
-{
-}
-#endif /* defined(CONFIG_USER_ONLY) */
-
-#if !defined(CONFIG_USER_ONLY)
-static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end,
-                             ram_addr_t memory);
-static void *subpage_init (target_phys_addr_t base, ram_addr_t *phys,
-                           ram_addr_t orig_memory);
-#define CHECK_SUBPAGE(addr, start_addr, start_addr2, end_addr, end_addr2, \
-                      need_subpage)                                     \
-    do {                                                                \
-        if (addr > start_addr)                                          \
-            start_addr2 = 0;                                            \
-        else {                                                          \
-            start_addr2 = start_addr & ~TARGET_PAGE_MASK;               \
-            if (start_addr2 > 0)                                        \
-                need_subpage = 1;                                       \
-        }                                                               \
-                                                                        \
-        if ((start_addr + orig_size) - addr >= TARGET_PAGE_SIZE)        \
-            end_addr2 = TARGET_PAGE_SIZE - 1;                           \
-        else {                                                          \
-            end_addr2 = (start_addr + orig_size - 1) & ~TARGET_PAGE_MASK; \
-            if (end_addr2 < TARGET_PAGE_SIZE - 1)                       \
-                need_subpage = 1;                                       \
-        }                                                               \
-    } while (0)
-
-/* register physical memory. 'size' must be a multiple of the target
-   page size. If (phys_offset & ~TARGET_PAGE_MASK) != 0, then it is an
-   io memory page */
-void cpu_register_physical_memory(target_phys_addr_t start_addr,
-                                  ram_addr_t size,
-                                  ram_addr_t phys_offset)
-{
-    target_phys_addr_t addr, end_addr;
-    PhysPageDesc *p;
-    CPUState *env;
-    ram_addr_t orig_size = size;
-    void *subpage;
-
-#ifdef USE_KQEMU
-    /* XXX: should not depend on cpu context */
-    env = first_cpu;
-    if (env->kqemu_enabled) {
-        kqemu_set_phys_mem(start_addr, size, phys_offset);
-    }
-#endif
-    size = (size + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK;
-    end_addr = start_addr + (target_phys_addr_t)size;
-    for(addr = start_addr; addr != end_addr; addr += TARGET_PAGE_SIZE) {
-        p = phys_page_find(addr >> TARGET_PAGE_BITS);
-        if (p && p->phys_offset != IO_MEM_UNASSIGNED) {
-            ram_addr_t orig_memory = p->phys_offset;
-            target_phys_addr_t start_addr2, end_addr2;
-            int need_subpage = 0;
-
-            CHECK_SUBPAGE(addr, start_addr, start_addr2, end_addr, end_addr2,
-                          need_subpage);
-            if (need_subpage || phys_offset & IO_MEM_SUBWIDTH) {
-                if (!(orig_memory & IO_MEM_SUBPAGE)) {
-                    subpage = subpage_init((addr & TARGET_PAGE_MASK),
-                                           &p->phys_offset, orig_memory);
-                } else {
-                    subpage = io_mem_opaque[(orig_memory & ~TARGET_PAGE_MASK)
-                                            >> IO_MEM_SHIFT];
-                }
-                subpage_register(subpage, start_addr2, end_addr2, phys_offset);
-            } else {
-                p->phys_offset = phys_offset;
-                if ((phys_offset & ~TARGET_PAGE_MASK) <= IO_MEM_ROM ||
-                    (phys_offset & IO_MEM_ROMD))
-                    phys_offset += TARGET_PAGE_SIZE;
-            }
-        } else {
-            p = phys_page_find_alloc(addr >> TARGET_PAGE_BITS, 1);
-            p->phys_offset = phys_offset;
-            if ((phys_offset & ~TARGET_PAGE_MASK) <= IO_MEM_ROM ||
-                (phys_offset & IO_MEM_ROMD))
-                phys_offset += TARGET_PAGE_SIZE;
-            else {
-                target_phys_addr_t start_addr2, end_addr2;
-                int need_subpage = 0;
-
-                CHECK_SUBPAGE(addr, start_addr, start_addr2, end_addr,
-                              end_addr2, need_subpage);
-
-                if (need_subpage || phys_offset & IO_MEM_SUBWIDTH) {
-                    subpage = subpage_init((addr & TARGET_PAGE_MASK),
-                                           &p->phys_offset, IO_MEM_UNASSIGNED);
-                    subpage_register(subpage, start_addr2, end_addr2,
-                                     phys_offset);
-                }
-            }
-        }
-    }
-
-    /* since each CPU stores ram addresses in its TLB cache, we must
-       reset the modified entries */
-    /* XXX: slow ! */
-    for(env = first_cpu; env != NULL; env = env->next_cpu) {
-        tlb_flush(env, 1);
-    }
-}
-
-/* XXX: temporary until new memory mapping API */
-ram_addr_t cpu_get_physical_page_desc(target_phys_addr_t addr)
-{
-    PhysPageDesc *p;
-
-    p = phys_page_find(addr >> TARGET_PAGE_BITS);
-    if (!p)
-        return IO_MEM_UNASSIGNED;
-    return p->phys_offset;
-}
-
-/* XXX: better than nothing */
-ram_addr_t qemu_ram_alloc(ram_addr_t size)
-{
-    ram_addr_t addr;
-    if ((phys_ram_alloc_offset + size) > phys_ram_size) {
-        fprintf(stderr, "Not enough memory (requested_size = %" PRIu64 ", max memory = %" PRIu64 "\n",
-                (uint64_t)size, (uint64_t)phys_ram_size);
-        abort();
-    }
-    addr = phys_ram_alloc_offset;
-    phys_ram_alloc_offset = TARGET_PAGE_ALIGN(phys_ram_alloc_offset + size);
-    return addr;
-}
-
-void qemu_ram_free(ram_addr_t addr)
-{
-}
-
-static uint32_t unassigned_mem_readb(void *opaque, target_phys_addr_t addr)
-{
-#ifdef DEBUG_UNASSIGNED
-    printf("Unassigned mem read " TARGET_FMT_plx "\n", addr);
-#endif
-#ifdef TARGET_SPARC
-    do_unassigned_access(addr, 0, 0, 0);
-#elif defined(TARGET_CRIS)
-    do_unassigned_access(addr, 0, 0, 0);
-#endif
-    return 0;
-}
-
-static void unassigned_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
-{
-#ifdef DEBUG_UNASSIGNED
-    printf("Unassigned mem write " TARGET_FMT_plx " = 0x%x\n", addr, val);
-#endif
-#ifdef TARGET_SPARC
-    do_unassigned_access(addr, 1, 0, 0);
-#elif defined(TARGET_CRIS)
-    do_unassigned_access(addr, 1, 0, 0);
-#endif
-}
-
-static CPUReadMemoryFunc *unassigned_mem_read[3] = {
-    unassigned_mem_readb,
-    unassigned_mem_readb,
-    unassigned_mem_readb,
-};
-
-static CPUWriteMemoryFunc *unassigned_mem_write[3] = {
-    unassigned_mem_writeb,
-    unassigned_mem_writeb,
-    unassigned_mem_writeb,
-};
-
-static void notdirty_mem_writeb(void *opaque, target_phys_addr_t ram_addr,
-                                uint32_t val)
-{
-    int dirty_flags;
-    dirty_flags = phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS];
-    if (!(dirty_flags & CODE_DIRTY_FLAG)) {
-#if !defined(CONFIG_USER_ONLY)
-        tb_invalidate_phys_page_fast(ram_addr, 1);
-        dirty_flags = phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS];
-#endif
-    }
-    stb_p(phys_ram_base + ram_addr, val);
-#ifdef USE_KQEMU
-    if (cpu_single_env->kqemu_enabled &&
-        (dirty_flags & KQEMU_MODIFY_PAGE_MASK) != KQEMU_MODIFY_PAGE_MASK)
-        kqemu_modify_page(cpu_single_env, ram_addr);
-#endif
-    dirty_flags |= (0xff & ~CODE_DIRTY_FLAG);
-    phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS] = dirty_flags;
-    /* we remove the notdirty callback only if the code has been
-       flushed */
-    if (dirty_flags == 0xff)
-        tlb_set_dirty(cpu_single_env, cpu_single_env->mem_io_vaddr);
-}
-
-static void notdirty_mem_writew(void *opaque, target_phys_addr_t ram_addr,
-                                uint32_t val)
-{
-    int dirty_flags;
-    dirty_flags = phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS];
-    if (!(dirty_flags & CODE_DIRTY_FLAG)) {
-#if !defined(CONFIG_USER_ONLY)
-        tb_invalidate_phys_page_fast(ram_addr, 2);
-        dirty_flags = phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS];
-#endif
-    }
-    stw_p(phys_ram_base + ram_addr, val);
-#ifdef USE_KQEMU
-    if (cpu_single_env->kqemu_enabled &&
-        (dirty_flags & KQEMU_MODIFY_PAGE_MASK) != KQEMU_MODIFY_PAGE_MASK)
-        kqemu_modify_page(cpu_single_env, ram_addr);
-#endif
-    dirty_flags |= (0xff & ~CODE_DIRTY_FLAG);
-    phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS] = dirty_flags;
-    /* we remove the notdirty callback only if the code has been
-       flushed */
-    if (dirty_flags == 0xff)
-        tlb_set_dirty(cpu_single_env, cpu_single_env->mem_io_vaddr);
-}
-
-static void notdirty_mem_writel(void *opaque, target_phys_addr_t ram_addr,
-                                uint32_t val)
-{
-    int dirty_flags;
-    dirty_flags = phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS];
-    if (!(dirty_flags & CODE_DIRTY_FLAG)) {
-#if !defined(CONFIG_USER_ONLY)
-        tb_invalidate_phys_page_fast(ram_addr, 4);
-        dirty_flags = phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS];
-#endif
-    }
-    stl_p(phys_ram_base + ram_addr, val);
-#ifdef USE_KQEMU
-    if (cpu_single_env->kqemu_enabled &&
-        (dirty_flags & KQEMU_MODIFY_PAGE_MASK) != KQEMU_MODIFY_PAGE_MASK)
-        kqemu_modify_page(cpu_single_env, ram_addr);
-#endif
-    dirty_flags |= (0xff & ~CODE_DIRTY_FLAG);
-    phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS] = dirty_flags;
-    /* we remove the notdirty callback only if the code has been
-       flushed */
-    if (dirty_flags == 0xff)
-        tlb_set_dirty(cpu_single_env, cpu_single_env->mem_io_vaddr);
-}
-
-static CPUReadMemoryFunc *error_mem_read[3] = {
-    NULL, /* never used */
-    NULL, /* never used */
-    NULL, /* never used */
-};
-
-static CPUWriteMemoryFunc *notdirty_mem_write[3] = {
-    notdirty_mem_writeb,
-    notdirty_mem_writew,
-    notdirty_mem_writel,
-};
-
-/* Generate a debug exception if a watchpoint has been hit.  */
-static void check_watchpoint(int offset, int flags)
-{
-    CPUState *env = cpu_single_env;
-    target_ulong vaddr;
-    int i;
-
-    vaddr = (env->mem_io_vaddr & TARGET_PAGE_MASK) + offset;
-    for (i = 0; i < env->nb_watchpoints; i++) {
-        if (vaddr == env->watchpoint[i].vaddr
-                && (env->watchpoint[i].type & flags)) {
-            env->watchpoint_hit = i + 1;
-            cpu_interrupt(env, CPU_INTERRUPT_DEBUG);
-            break;
-        }
-    }
-}
-
-/* Watchpoint access routines.  Watchpoints are inserted using TLB tricks,
-   so these check for a hit then pass through to the normal out-of-line
-   phys routines.  */
-static uint32_t watch_mem_readb(void *opaque, target_phys_addr_t addr)
-{
-    check_watchpoint(addr & ~TARGET_PAGE_MASK, PAGE_READ);
-    return ldub_phys(addr);
-}
-
-static uint32_t watch_mem_readw(void *opaque, target_phys_addr_t addr)
-{
-    check_watchpoint(addr & ~TARGET_PAGE_MASK, PAGE_READ);
-    return lduw_phys(addr);
-}
-
-static uint32_t watch_mem_readl(void *opaque, target_phys_addr_t addr)
-{
-    check_watchpoint(addr & ~TARGET_PAGE_MASK, PAGE_READ);
-    return ldl_phys(addr);
-}
-
-static void watch_mem_writeb(void *opaque, target_phys_addr_t addr,
-                             uint32_t val)
-{
-    check_watchpoint(addr & ~TARGET_PAGE_MASK, PAGE_WRITE);
-    stb_phys(addr, val);
-}
-
-static void watch_mem_writew(void *opaque, target_phys_addr_t addr,
-                             uint32_t val)
-{
-    check_watchpoint(addr & ~TARGET_PAGE_MASK, PAGE_WRITE);
-    stw_phys(addr, val);
-}
-
-static void watch_mem_writel(void *opaque, target_phys_addr_t addr,
-                             uint32_t val)
-{
-    check_watchpoint(addr & ~TARGET_PAGE_MASK, PAGE_WRITE);
-    stl_phys(addr, val);
-}
-
-static CPUReadMemoryFunc *watch_mem_read[3] = {
-    watch_mem_readb,
-    watch_mem_readw,
-    watch_mem_readl,
-};
-
-static CPUWriteMemoryFunc *watch_mem_write[3] = {
-    watch_mem_writeb,
-    watch_mem_writew,
-    watch_mem_writel,
-};
-
-static inline uint32_t subpage_readlen (subpage_t *mmio, target_phys_addr_t addr,
-                                 unsigned int len)
-{
-    uint32_t ret;
-    unsigned int idx;
-
-    idx = SUBPAGE_IDX(addr - mmio->base);
-#if defined(DEBUG_SUBPAGE)
-    printf("%s: subpage %p len %d addr " TARGET_FMT_plx " idx %d\n", __func__,
-           mmio, len, addr, idx);
-#endif
-    ret = (**mmio->mem_read[idx][len])(mmio->opaque[idx][0][len], addr);
-
-    return ret;
-}
-
-static inline void subpage_writelen (subpage_t *mmio, target_phys_addr_t addr,
-                              uint32_t value, unsigned int len)
-{
-    unsigned int idx;
-
-    idx = SUBPAGE_IDX(addr - mmio->base);
-#if defined(DEBUG_SUBPAGE)
-    printf("%s: subpage %p len %d addr " TARGET_FMT_plx " idx %d value %08x\n", __func__,
-           mmio, len, addr, idx, value);
-#endif
-    (**mmio->mem_write[idx][len])(mmio->opaque[idx][1][len], addr, value);
-}
-
-static uint32_t subpage_readb (void *opaque, target_phys_addr_t addr)
-{
-#if defined(DEBUG_SUBPAGE)
-    printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr);
-#endif
-
-    return subpage_readlen(opaque, addr, 0);
-}
-
-static void subpage_writeb (void *opaque, target_phys_addr_t addr,
-                            uint32_t value)
-{
-#if defined(DEBUG_SUBPAGE)
-    printf("%s: addr " TARGET_FMT_plx " val %08x\n", __func__, addr, value);
-#endif
-    subpage_writelen(opaque, addr, value, 0);
-}
-
-static uint32_t subpage_readw (void *opaque, target_phys_addr_t addr)
-{
-#if defined(DEBUG_SUBPAGE)
-    printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr);
-#endif
-
-    return subpage_readlen(opaque, addr, 1);
-}
-
-static void subpage_writew (void *opaque, target_phys_addr_t addr,
-                            uint32_t value)
-{
-#if defined(DEBUG_SUBPAGE)
-    printf("%s: addr " TARGET_FMT_plx " val %08x\n", __func__, addr, value);
-#endif
-    subpage_writelen(opaque, addr, value, 1);
-}
-
-static uint32_t subpage_readl (void *opaque, target_phys_addr_t addr)
-{
-#if defined(DEBUG_SUBPAGE)
-    printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr);
-#endif
-
-    return subpage_readlen(opaque, addr, 2);
-}
-
-static void subpage_writel (void *opaque,
-                         target_phys_addr_t addr, uint32_t value)
-{
-#if defined(DEBUG_SUBPAGE)
-    printf("%s: addr " TARGET_FMT_plx " val %08x\n", __func__, addr, value);
-#endif
-    subpage_writelen(opaque, addr, value, 2);
-}
-
-static CPUReadMemoryFunc *subpage_read[] = {
-    &subpage_readb,
-    &subpage_readw,
-    &subpage_readl,
-};
-
-static CPUWriteMemoryFunc *subpage_write[] = {
-    &subpage_writeb,
-    &subpage_writew,
-    &subpage_writel,
-};
-
-static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end,
-                             ram_addr_t memory)
-{
-    int idx, eidx;
-    unsigned int i;
-
-    if (start >= TARGET_PAGE_SIZE || end >= TARGET_PAGE_SIZE)
-        return -1;
-    idx = SUBPAGE_IDX(start);
-    eidx = SUBPAGE_IDX(end);
-#if defined(DEBUG_SUBPAGE)
-    printf("%s: %p start %08x end %08x idx %08x eidx %08x mem %d\n", __func__,
-           mmio, start, end, idx, eidx, memory);
-#endif
-    memory >>= IO_MEM_SHIFT;
-    for (; idx <= eidx; idx++) {
-        for (i = 0; i < 4; i++) {
-            if (io_mem_read[memory][i]) {
-                mmio->mem_read[idx][i] = &io_mem_read[memory][i];
-                mmio->opaque[idx][0][i] = io_mem_opaque[memory];
-            }
-            if (io_mem_write[memory][i]) {
-                mmio->mem_write[idx][i] = &io_mem_write[memory][i];
-                mmio->opaque[idx][1][i] = io_mem_opaque[memory];
-            }
-        }
-    }
-
-    return 0;
-}
-
-static void *subpage_init (target_phys_addr_t base, ram_addr_t *phys,
-                           ram_addr_t orig_memory)
-{
-    subpage_t *mmio;
-    int subpage_memory;
-
-    mmio = qemu_mallocz(sizeof(subpage_t));
-    if (mmio != NULL) {
-        mmio->base = base;
-        subpage_memory = cpu_register_io_memory(0, subpage_read, subpage_write, mmio);
-#if defined(DEBUG_SUBPAGE)
-        printf("%s: %p base " TARGET_FMT_plx " len %08x %d\n", __func__,
-               mmio, base, TARGET_PAGE_SIZE, subpage_memory);
-#endif
-        *phys = subpage_memory | IO_MEM_SUBPAGE;
-        subpage_register(mmio, 0, TARGET_PAGE_SIZE - 1, orig_memory);
-    }
-
-    return mmio;
-}
-
-static void io_mem_init(void)
-{
-    cpu_register_io_memory(IO_MEM_ROM >> IO_MEM_SHIFT, error_mem_read, unassigned_mem_write, NULL);
-    cpu_register_io_memory(IO_MEM_UNASSIGNED >> IO_MEM_SHIFT, unassigned_mem_read, unassigned_mem_write, NULL);
-    cpu_register_io_memory(IO_MEM_NOTDIRTY >> IO_MEM_SHIFT, error_mem_read, notdirty_mem_write, NULL);
-    io_mem_nb = 5;
-
-    io_mem_watch = cpu_register_io_memory(0, watch_mem_read,
-                                          watch_mem_write, NULL);
-    /* alloc dirty bits array */
-    phys_ram_dirty = qemu_vmalloc(phys_ram_size >> TARGET_PAGE_BITS);
-    memset(phys_ram_dirty, 0xff, phys_ram_size >> TARGET_PAGE_BITS);
-}
-
-/* mem_read and mem_write are arrays of functions containing the
-   function to access byte (index 0), word (index 1) and dword (index
-   2). Functions can be omitted with a NULL function pointer. The
-   registered functions may be modified dynamically later.
-   If io_index is non zero, the corresponding io zone is
-   modified. If it is zero, a new io zone is allocated. The return
-   value can be used with cpu_register_physical_memory(). (-1) is
-   returned if error. */
-int cpu_register_io_memory(int io_index,
-                           CPUReadMemoryFunc **mem_read,
-                           CPUWriteMemoryFunc **mem_write,
-                           void *opaque)
-{
-    int i, subwidth = 0;
-
-    if (io_index <= 0) {
-        if (io_mem_nb >= IO_MEM_NB_ENTRIES)
-            return -1;
-        io_index = io_mem_nb++;
-    } else {
-        if (io_index >= IO_MEM_NB_ENTRIES)
-            return -1;
-    }
-
-    for(i = 0;i < 3; i++) {
-        if (!mem_read[i] || !mem_write[i])
-            subwidth = IO_MEM_SUBWIDTH;
-        io_mem_read[io_index][i] = mem_read[i];
-        io_mem_write[io_index][i] = mem_write[i];
-    }
-    io_mem_opaque[io_index] = opaque;
-    return (io_index << IO_MEM_SHIFT) | subwidth;
-}
-
-CPUWriteMemoryFunc **cpu_get_io_memory_write(int io_index)
-{
-    return io_mem_write[io_index >> IO_MEM_SHIFT];
-}
-
-CPUReadMemoryFunc **cpu_get_io_memory_read(int io_index)
-{
-    return io_mem_read[io_index >> IO_MEM_SHIFT];
-}
-
-#endif /* !defined(CONFIG_USER_ONLY) */
-
-/* physical memory access (slow version, mainly for debug) */
-#if defined(CONFIG_USER_ONLY)
-void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
-                            int len, int is_write)
-{
-    int l, flags;
-    target_ulong page;
-    void * p;
-
-    while (len > 0) {
-        page = addr & TARGET_PAGE_MASK;
-        l = (page + TARGET_PAGE_SIZE) - addr;
-        if (l > len)
-            l = len;
-        flags = page_get_flags(page);
-        if (!(flags & PAGE_VALID))
-            return;
-        if (is_write) {
-            if (!(flags & PAGE_WRITE))
-                return;
-            /* XXX: this code should not depend on lock_user */
-            if (!(p = lock_user(VERIFY_WRITE, addr, l, 0)))
-                /* FIXME - should this return an error rather than just fail? */
-                return;
-            memcpy(p, buf, l);
-            unlock_user(p, addr, l);
-        } else {
-            if (!(flags & PAGE_READ))
-                return;
-            /* XXX: this code should not depend on lock_user */
-            if (!(p = lock_user(VERIFY_READ, addr, l, 1)))
-                /* FIXME - should this return an error rather than just fail? */
-                return;
-            memcpy(buf, p, l);
-            unlock_user(p, addr, 0);
-        }
-        len -= l;
-        buf += l;
-        addr += l;
-    }
-}
-
-#else
-void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
-                            int len, int is_write)
-{
-    int l, io_index;
-    uint8_t *ptr;
-    uint32_t val;
-    target_phys_addr_t page;
-    unsigned long pd;
-    PhysPageDesc *p;
-
-    while (len > 0) {
-        page = addr & TARGET_PAGE_MASK;
-        l = (page + TARGET_PAGE_SIZE) - addr;
-        if (l > len)
-            l = len;
-        p = phys_page_find(page >> TARGET_PAGE_BITS);
-        if (!p) {
-            pd = IO_MEM_UNASSIGNED;
-        } else {
-            pd = p->phys_offset;
-        }
-
-        if (is_write) {
-            if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) {
-                io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
-                /* XXX: could force cpu_single_env to NULL to avoid
-                   potential bugs */
-                if (l >= 4 && ((addr & 3) == 0)) {
-                    /* 32 bit write access */
-                    val = ldl_p(buf);
-                    io_mem_write[io_index][2](io_mem_opaque[io_index], addr, val);
-                    l = 4;
-                } else if (l >= 2 && ((addr & 1) == 0)) {
-                    /* 16 bit write access */
-                    val = lduw_p(buf);
-                    io_mem_write[io_index][1](io_mem_opaque[io_index], addr, val);
-                    l = 2;
-                } else {
-                    /* 8 bit write access */
-                    val = ldub_p(buf);
-                    io_mem_write[io_index][0](io_mem_opaque[io_index], addr, val);
-                    l = 1;
-                }
-            } else {
-                unsigned long addr1;
-                addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK);
-                /* RAM case */
-                ptr = phys_ram_base + addr1;
-                memcpy(ptr, buf, l);
-                if (!cpu_physical_memory_is_dirty(addr1)) {
-                    /* invalidate code */
-                    tb_invalidate_phys_page_range(addr1, addr1 + l, 0);
-                    /* set dirty bit */
-                    phys_ram_dirty[addr1 >> TARGET_PAGE_BITS] |=
-                        (0xff & ~CODE_DIRTY_FLAG);
-                }
-            }
-        } else {
-            if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM &&
-                !(pd & IO_MEM_ROMD)) {
-                /* I/O case */
-                io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
-                if (l >= 4 && ((addr & 3) == 0)) {
-                    /* 32 bit read access */
-                    val = io_mem_read[io_index][2](io_mem_opaque[io_index], addr);
-                    stl_p(buf, val);
-                    l = 4;
-                } else if (l >= 2 && ((addr & 1) == 0)) {
-                    /* 16 bit read access */
-                    val = io_mem_read[io_index][1](io_mem_opaque[io_index], addr);
-                    stw_p(buf, val);
-                    l = 2;
-                } else {
-                    /* 8 bit read access */
-                    val = io_mem_read[io_index][0](io_mem_opaque[io_index], addr);
-                    stb_p(buf, val);
-                    l = 1;
-                }
-            } else {
-                /* RAM case */
-                ptr = phys_ram_base + (pd & TARGET_PAGE_MASK) +
-                    (addr & ~TARGET_PAGE_MASK);
-                memcpy(buf, ptr, l);
-            }
-        }
-        len -= l;
-        buf += l;
-        addr += l;
-    }
-}
-
-/* used for ROM loading : can write in RAM and ROM */
-void cpu_physical_memory_write_rom(target_phys_addr_t addr,
-                                   const uint8_t *buf, int len)
-{
-    int l;
-    uint8_t *ptr;
-    target_phys_addr_t page;
-    unsigned long pd;
-    PhysPageDesc *p;
-
-    while (len > 0) {
-        page = addr & TARGET_PAGE_MASK;
-        l = (page + TARGET_PAGE_SIZE) - addr;
-        if (l > len)
-            l = len;
-        p = phys_page_find(page >> TARGET_PAGE_BITS);
-        if (!p) {
-            pd = IO_MEM_UNASSIGNED;
-        } else {
-            pd = p->phys_offset;
-        }
-
-        if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM &&
-            (pd & ~TARGET_PAGE_MASK) != IO_MEM_ROM &&
-            !(pd & IO_MEM_ROMD)) {
-            /* do nothing */
-        } else {
-            unsigned long addr1;
-            addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK);
-            /* ROM/RAM case */
-            ptr = phys_ram_base + addr1;
-            memcpy(ptr, buf, l);
-        }
-        len -= l;
-        buf += l;
-        addr += l;
-    }
-}
-
-
-/* warning: addr must be aligned */
-uint32_t ldl_phys(target_phys_addr_t addr)
-{
-    int io_index;
-    uint8_t *ptr;
-    uint32_t val;
-    unsigned long pd;
-    PhysPageDesc *p;
-
-    p = phys_page_find(addr >> TARGET_PAGE_BITS);
-    if (!p) {
-        pd = IO_MEM_UNASSIGNED;
-    } else {
-        pd = p->phys_offset;
-    }
-
-    if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM &&
-        !(pd & IO_MEM_ROMD)) {
-        /* I/O case */
-        io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
-        val = io_mem_read[io_index][2](io_mem_opaque[io_index], addr);
-    } else {
-        /* RAM case */
-        ptr = phys_ram_base + (pd & TARGET_PAGE_MASK) +
-            (addr & ~TARGET_PAGE_MASK);
-        val = ldl_p(ptr);
-    }
-    return val;
-}
-
-/* warning: addr must be aligned */
-uint64_t ldq_phys(target_phys_addr_t addr)
-{
-    int io_index;
-    uint8_t *ptr;
-    uint64_t val;
-    unsigned long pd;
-    PhysPageDesc *p;
-
-    p = phys_page_find(addr >> TARGET_PAGE_BITS);
-    if (!p) {
-        pd = IO_MEM_UNASSIGNED;
-    } else {
-        pd = p->phys_offset;
-    }
-
-    if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM &&
-        !(pd & IO_MEM_ROMD)) {
-        /* I/O case */
-        io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
-#ifdef TARGET_WORDS_BIGENDIAN
-        val = (uint64_t)io_mem_read[io_index][2](io_mem_opaque[io_index], addr) << 32;
-        val |= io_mem_read[io_index][2](io_mem_opaque[io_index], addr + 4);
-#else
-        val = io_mem_read[io_index][2](io_mem_opaque[io_index], addr);
-        val |= (uint64_t)io_mem_read[io_index][2](io_mem_opaque[io_index], addr + 4) << 32;
-#endif
-    } else {
-        /* RAM case */
-        ptr = phys_ram_base + (pd & TARGET_PAGE_MASK) +
-            (addr & ~TARGET_PAGE_MASK);
-        val = ldq_p(ptr);
-    }
-    return val;
-}
-
-/* XXX: optimize */
-uint32_t ldub_phys(target_phys_addr_t addr)
-{
-    uint8_t val;
-    cpu_physical_memory_read(addr, &val, 1);
-    return val;
-}
-
-/* XXX: optimize */
-uint32_t lduw_phys(target_phys_addr_t addr)
-{
-    uint16_t val;
-    cpu_physical_memory_read(addr, (uint8_t *)&val, 2);
-    return tswap16(val);
-}
-
-/* warning: addr must be aligned. The ram page is not masked as dirty
-   and the code inside is not invalidated. It is useful if the dirty
-   bits are used to track modified PTEs */
-void stl_phys_notdirty(target_phys_addr_t addr, uint32_t val)
-{
-    int io_index;
-    uint8_t *ptr;
-    unsigned long pd;
-    PhysPageDesc *p;
-
-    p = phys_page_find(addr >> TARGET_PAGE_BITS);
-    if (!p) {
-        pd = IO_MEM_UNASSIGNED;
-    } else {
-        pd = p->phys_offset;
-    }
-
-    if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) {
-        io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
-        io_mem_write[io_index][2](io_mem_opaque[io_index], addr, val);
-    } else {
-        ptr = phys_ram_base + (pd & TARGET_PAGE_MASK) +
-            (addr & ~TARGET_PAGE_MASK);
-        stl_p(ptr, val);
-    }
-}
-
-void stq_phys_notdirty(target_phys_addr_t addr, uint64_t val)
-{
-    int io_index;
-    uint8_t *ptr;
-    unsigned long pd;
-    PhysPageDesc *p;
-
-    p = phys_page_find(addr >> TARGET_PAGE_BITS);
-    if (!p) {
-        pd = IO_MEM_UNASSIGNED;
-    } else {
-        pd = p->phys_offset;
-    }
-
-    if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) {
-        io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
-#ifdef TARGET_WORDS_BIGENDIAN
-        io_mem_write[io_index][2](io_mem_opaque[io_index], addr, val >> 32);
-        io_mem_write[io_index][2](io_mem_opaque[io_index], addr + 4, val);
-#else
-        io_mem_write[io_index][2](io_mem_opaque[io_index], addr, val);
-        io_mem_write[io_index][2](io_mem_opaque[io_index], addr + 4, val >> 32);
-#endif
-    } else {
-        ptr = phys_ram_base + (pd & TARGET_PAGE_MASK) +
-            (addr & ~TARGET_PAGE_MASK);
-        stq_p(ptr, val);
-    }
-}
-
-/* warning: addr must be aligned */
-void stl_phys(target_phys_addr_t addr, uint32_t val)
-{
-    int io_index;
-    uint8_t *ptr;
-    unsigned long pd;
-    PhysPageDesc *p;
-
-    p = phys_page_find(addr >> TARGET_PAGE_BITS);
-    if (!p) {
-        pd = IO_MEM_UNASSIGNED;
-    } else {
-        pd = p->phys_offset;
-    }
-
-    if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) {
-        io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
-        io_mem_write[io_index][2](io_mem_opaque[io_index], addr, val);
-    } else {
-        unsigned long addr1;
-        addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK);
-        /* RAM case */
-        ptr = phys_ram_base + addr1;
-        stl_p(ptr, val);
-        if (!cpu_physical_memory_is_dirty(addr1)) {
-            /* invalidate code */
-            tb_invalidate_phys_page_range(addr1, addr1 + 4, 0);
-            /* set dirty bit */
-            phys_ram_dirty[addr1 >> TARGET_PAGE_BITS] |=
-                (0xff & ~CODE_DIRTY_FLAG);
-        }
-    }
-}
-
-/* XXX: optimize */
-void stb_phys(target_phys_addr_t addr, uint32_t val)
-{
-    uint8_t v = val;
-    cpu_physical_memory_write(addr, &v, 1);
-}
-
-/* XXX: optimize */
-void stw_phys(target_phys_addr_t addr, uint32_t val)
-{
-    uint16_t v = tswap16(val);
-    cpu_physical_memory_write(addr, (const uint8_t *)&v, 2);
-}
-
-/* XXX: optimize */
-void stq_phys(target_phys_addr_t addr, uint64_t val)
-{
-    val = tswap64(val);
-    cpu_physical_memory_write(addr, (const uint8_t *)&val, 8);
-}
-
-#endif
-
-/* virtual memory access for debug */
-int cpu_memory_rw_debug(CPUState *env, target_ulong addr,
-                        uint8_t *buf, int len, int is_write)
-{
-    int l;
-    target_phys_addr_t phys_addr;
-    target_ulong page;
-
-    while (len > 0) {
-        page = addr & TARGET_PAGE_MASK;
-        phys_addr = cpu_get_phys_page_debug(env, page);
-        /* if no physical page mapped, return an error */
-        if (phys_addr == -1)
-            return -1;
-        l = (page + TARGET_PAGE_SIZE) - addr;
-        if (l > len)
-            l = len;
-        cpu_physical_memory_rw(phys_addr + (addr & ~TARGET_PAGE_MASK),
-                               buf, l, is_write);
-        len -= l;
-        buf += l;
-        addr += l;
-    }
-    return 0;
-}
-
-/* in deterministic execution mode, instructions doing device I/Os
-   must be at the end of the TB */
-void cpu_io_recompile(CPUState *env, void *retaddr)
-{
-    TranslationBlock *tb;
-    uint32_t n, cflags;
-    target_ulong pc, cs_base;
-    uint64_t flags;
-
-    tb = tb_find_pc((unsigned long)retaddr);
-    if (!tb) {
-        cpu_abort(env, "cpu_io_recompile: could not find TB for pc=%p", 
-                  retaddr);
-    }
-    n = env->icount_decr.u16.low + tb->icount;
-    cpu_restore_state(tb, env, (unsigned long)retaddr, NULL);
-    /* Calculate how many instructions had been executed before the fault
-       occurred.  */
-    n = n - env->icount_decr.u16.low;
-    /* Generate a new TB ending on the I/O insn.  */
-    n++;
-    /* On MIPS and SH, delay slot instructions can only be restarted if
-       they were already the first instruction in the TB.  If this is not
-       the first instruction in a TB then re-execute the preceding
-       branch.  */
-#if defined(TARGET_MIPS)
-    if ((env->hflags & MIPS_HFLAG_BMASK) != 0 && n > 1) {
-        env->active_tc.PC -= 4;
-        env->icount_decr.u16.low++;
-        env->hflags &= ~MIPS_HFLAG_BMASK;
-    }
-#elif defined(TARGET_SH4)
-    if ((env->flags & ((DELAY_SLOT | DELAY_SLOT_CONDITIONAL))) != 0
-            && n > 1) {
-        env->pc -= 2;
-        env->icount_decr.u16.low++;
-        env->flags &= ~(DELAY_SLOT | DELAY_SLOT_CONDITIONAL);
-    }
-#endif
-    /* This should never happen.  */
-    if (n > CF_COUNT_MASK)
-        cpu_abort(env, "TB too big during recompile");
-
-    cflags = n | CF_LAST_IO;
-    pc = tb->pc;
-    cs_base = tb->cs_base;
-    flags = tb->flags;
-    tb_phys_invalidate(tb, -1);
-    /* FIXME: In theory this could raise an exception.  In practice
-       we have already translated the block once so it's probably ok.  */
-    tb_gen_code(env, pc, cs_base, flags, cflags);
-    /* TODO: If env->pc != tb->pc (i.e. the faulting instruction was not
-       the first in the TB) then we end up generating a whole new TB and
-       repeating the fault, which is horribly inefficient.
-       Better would be to execute just this insn uncached, or generate a
-       second new TB.  */
-    cpu_resume_from_signal(env, NULL);
-}
-
-void dump_exec_info(FILE *f,
-                    int (*cpu_fprintf)(FILE *f, const char *fmt, ...))
-{
-    int i, target_code_size, max_target_code_size;
-    int direct_jmp_count, direct_jmp2_count, cross_page;
-    TranslationBlock *tb;
-
-    target_code_size = 0;
-    max_target_code_size = 0;
-    cross_page = 0;
-    direct_jmp_count = 0;
-    direct_jmp2_count = 0;
-    for(i = 0; i < nb_tbs; i++) {
-        tb = &tbs[i];
-        target_code_size += tb->size;
-        if (tb->size > max_target_code_size)
-            max_target_code_size = tb->size;
-        if (tb->page_addr[1] != -1)
-            cross_page++;
-        if (tb->tb_next_offset[0] != 0xffff) {
-            direct_jmp_count++;
-            if (tb->tb_next_offset[1] != 0xffff) {
-                direct_jmp2_count++;
-            }
-        }
-    }
-    /* XXX: avoid using doubles ? */
-    cpu_fprintf(f, "Translation buffer state:\n");
-    cpu_fprintf(f, "gen code size       %ld/%ld\n",
-                code_gen_ptr - code_gen_buffer, code_gen_buffer_max_size);
-    cpu_fprintf(f, "TB count            %d/%d\n", 
-                nb_tbs, code_gen_max_blocks);
-    cpu_fprintf(f, "TB avg target size  %d max=%d bytes\n",
-                nb_tbs ? target_code_size / nb_tbs : 0,
-                max_target_code_size);
-    cpu_fprintf(f, "TB avg host size    %d bytes (expansion ratio: %0.1f)\n",
-                nb_tbs ? (code_gen_ptr - code_gen_buffer) / nb_tbs : 0,
-                target_code_size ? (double) (code_gen_ptr - code_gen_buffer) / target_code_size : 0);
-    cpu_fprintf(f, "cross page TB count %d (%d%%)\n",
-            cross_page,
-            nb_tbs ? (cross_page * 100) / nb_tbs : 0);
-    cpu_fprintf(f, "direct jump count   %d (%d%%) (2 jumps=%d %d%%)\n",
-                direct_jmp_count,
-                nb_tbs ? (direct_jmp_count * 100) / nb_tbs : 0,
-                direct_jmp2_count,
-                nb_tbs ? (direct_jmp2_count * 100) / nb_tbs : 0);
-    cpu_fprintf(f, "\nStatistics:\n");
-    cpu_fprintf(f, "TB flush count      %d\n", tb_flush_count);
-    cpu_fprintf(f, "TB invalidate count %d\n", tb_phys_invalidate_count);
-    cpu_fprintf(f, "TLB flush count     %d\n", tlb_flush_count);
-    tcg_dump_info(f, cpu_fprintf);
-}
-
-#if !defined(CONFIG_USER_ONLY)
-
-#define MMUSUFFIX _cmmu
-#define GETPC() NULL
-#define env cpu_single_env
-#define SOFTMMU_CODE_ACCESS
-
-#define SHIFT 0
-#include "softmmu_template.h"
-
-#define SHIFT 1
-#include "softmmu_template.h"
-
-#define SHIFT 2
-#include "softmmu_template.h"
-
-#define SHIFT 3
-#include "softmmu_template.h"
-
-#undef env
-
-#endif