uae_cpu/compiler/compemu_support.cpp

/*
 *  compiler/compemu_support.cpp - Core dynamic translation engine
 *
 *  Original 68040 JIT compiler for UAE, copyright 2000-2002 Bernd Meyer
 *
 *  Adaptation for Basilisk II and improvements, copyright 2000-2002
 *    Gwenole Beauchesne
 *
 *  Basilisk II (C) 1997-2002 Christian Bauer
 *  
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#if !REAL_ADDRESSING && !DIRECT_ADDRESSING
#error "Only Real or Direct Addressing is supported with the JIT Compiler"
#endif

#if X86_ASSEMBLY && !SAHF_SETO_PROFITABLE
#error "Only [LS]AHF scheme to [gs]et flags is supported with the JIT Compiler"
#endif

#define USE_MATCH 0

/* kludge for Brian, so he can compile under MSVC++ */
#define USE_NORMAL_CALLING_CONVENTION 0

#ifndef WIN32
#include <sys/types.h>
#include <sys/mman.h>
#endif

#include <stdlib.h>
#include <fcntl.h>
#include <errno.h>

#include "sysdeps.h"
#include "cpu_emulation.h"
#include "main.h"
#include "prefs.h"
#include "user_strings.h"
#include "vm_alloc.h"

#include "m68k.h"
#include "memory.h"
#include "readcpu.h"
#include "newcpu.h"
#include "comptbl.h"
#include "compiler/compemu.h"
#include "fpu/fpu.h"
#include "fpu/flags.h"

#define DEBUG 1
#include "debug.h"

#ifdef ENABLE_MON
#include "mon.h"
#endif

#ifndef WIN32
#define PROFILE_COMPILE_TIME            1
#define PROFILE_UNTRANSLATED_INSNS      1
#endif

#ifdef WIN32
#undef write_log
#define write_log dummy_write_log
static void dummy_write_log(const char *, ...) { }
#endif

#if JIT_DEBUG
#undef abort
#define abort() do { \
        fprintf(stderr, "Abort in file %s at line %d\n", __FILE__, __LINE__); \
        exit(EXIT_FAILURE); \
} while (0)
#endif

#if PROFILE_COMPILE_TIME
#include <time.h>
static uae_u32 compile_count    = 0;
static clock_t compile_time             = 0;
static clock_t emul_start_time  = 0;
static clock_t emul_end_time    = 0;
#endif

#if PROFILE_UNTRANSLATED_INSNS
const int untranslated_top_ten = 20;
static uae_u32 raw_cputbl_count[65536] = { 0, };
static uae_u16 opcode_nums[65536];

static int untranslated_compfn(const void *e1, const void *e2)
{
        return raw_cputbl_count[*(const uae_u16 *)e1] < raw_cputbl_count[*(const uae_u16 *)e2];
}
#endif

compop_func *compfunctbl[65536];
compop_func *nfcompfunctbl[65536];
cpuop_func *nfcpufunctbl[65536];
uae_u8* comp_pc_p;

// From newcpu.cpp
extern bool quit_program;

// gb-- Extra data for Basilisk II/JIT
#if JIT_DEBUG
static bool             JITDebug                        = false;        // Enable runtime disassemblers through mon?
#else
const bool              JITDebug                        = false;        // Don't use JIT debug mode at all
#endif

const uae_u32   MIN_CACHE_SIZE          = 2048;         // Minimal translation cache size (2048 KB)
static uae_u32  cache_size                      = 0;            // Size of total cache allocated for compiled blocks
static uae_u32  current_cache_size      = 0;            // Cache grows upwards: how much has been consumed already
static bool             lazy_flush                      = true;         // Flag: lazy translation cache invalidation
static bool             avoid_fpu                       = true;         // Flag: compile FPU instructions ?
static bool             have_cmov                       = false;        // target has CMOV instructions ?
static bool             have_rat_stall          = true;         // target has partial register stalls ?
const bool              tune_alignment          = true;         // Tune code alignments for running CPU ?
const bool              tune_nop_fillers        = true;         // Tune no-op fillers for architecture
static bool             setzflg_uses_bsf        = false;        // setzflg virtual instruction can use native BSF instruction correctly?
static int              align_loops                     = 32;           // Align the start of loops
static int              align_jumps                     = 32;           // Align the start of jumps
static int              zero_fd                         = -1;
static int              optcount[10]            = {
        10,             // How often a block has to be executed before it is translated
        0,              // How often to use naive translation
        0, 0, 0, 0,
        -1, -1, -1, -1
};

struct op_properties {
        uae_u8 use_flags;
        uae_u8 set_flags;
        uae_u8 is_addx;
        uae_u8 cflow;
};
static op_properties prop[65536];

static inline int end_block(uae_u32 opcode)
{
        return (prop[opcode].cflow & fl_end_block);
}

static inline bool is_const_jump(uae_u32 opcode)
{
        return (prop[opcode].cflow == fl_const_jump);
}

uae_u8* start_pc_p;
uae_u32 start_pc;
uae_u32 current_block_pc_p;
uae_u32 current_block_start_target;
uae_u32 needed_flags;
static uae_u32 next_pc_p;
static uae_u32 taken_pc_p;
static int branch_cc;
static int redo_current_block;

int segvcount=0;
int soft_flush_count=0;
int hard_flush_count=0;
int checksum_count=0;
static uae_u8* current_compile_p=NULL;
static uae_u8* max_compile_start;
static uae_u8* compiled_code=NULL;
static uae_s32 reg_alloc_run;

void* pushall_call_handler=NULL;
static void* popall_do_nothing=NULL;
static void* popall_exec_nostats=NULL;
static void* popall_execute_normal=NULL;
static void* popall_cache_miss=NULL;
static void* popall_recompile_block=NULL;
static void* popall_check_checksum=NULL;

extern uae_u32 oink;
extern unsigned long foink3;
extern unsigned long foink;

/* The 68k only ever executes from even addresses. So right now, we
 * waste half the entries in this array
 * UPDATE: We now use those entries to store the start of the linked
 * lists that we maintain for each hash result.
 */
cacheline cache_tags[TAGSIZE];
int letit=0;
blockinfo* hold_bi[MAX_HOLD_BI];
blockinfo* active;
blockinfo* dormant;

/* 68040 */
extern struct cputbl op_smalltbl_0_nf[];
extern struct comptbl op_smalltbl_0_comp_nf[];
extern struct comptbl op_smalltbl_0_comp_ff[];

/* 68020 + 68881 */
extern struct cputbl op_smalltbl_1_nf[];

/* 68020 */
extern struct cputbl op_smalltbl_2_nf[];

/* 68010 */
extern struct cputbl op_smalltbl_3_nf[];

/* 68000 */
extern struct cputbl op_smalltbl_4_nf[];

/* 68000 slow but compatible.  */
extern struct cputbl op_smalltbl_5_nf[];

static void flush_icache_hard(int n);
static void flush_icache_lazy(int n);
static void flush_icache_none(int n);
void (*flush_icache)(int n) = flush_icache_none;


bigstate live;
smallstate empty_ss;
smallstate default_ss;
static int optlev;

static int writereg(int r, int size);
static void unlock2(int r);
static void setlock(int r);
static int readreg_specific(int r, int size, int spec);
static int writereg_specific(int r, int size, int spec);
static void prepare_for_call_1(void);
static void prepare_for_call_2(void);
static void align_target(uae_u32 a);

static uae_s32 nextused[VREGS];

uae_u32 m68k_pc_offset;

/* Some arithmetic ooperations can be optimized away if the operands
 * are known to be constant. But that's only a good idea when the
 * side effects they would have on the flags are not important. This
 * variable indicates whether we need the side effects or not
 */
uae_u32 needflags=0;

/* Flag handling is complicated.
 *
 * x86 instructions create flags, which quite often are exactly what we
 * want. So at times, the "68k" flags are actually in the x86 flags.
 *
 * Then again, sometimes we do x86 instructions that clobber the x86
 * flags, but don't represent a corresponding m68k instruction. In that
 * case, we have to save them.
 *
 * We used to save them to the stack, but now store them back directly
 * into the regflags.cznv of the traditional emulation. Thus some odd
 * names.
 *
 * So flags can be in either of two places (used to be three; boy were
 * things complicated back then!); And either place can contain either
 * valid flags or invalid trash (and on the stack, there was also the
 * option of "nothing at all", now gone). A couple of variables keep
 * track of the respective states.
 *
 * To make things worse, we might or might not be interested in the flags.
 * by default, we are, but a call to dont_care_flags can change that
 * until the next call to live_flags. If we are not, pretty much whatever
 * is in the register and/or the native flags is seen as valid.
 */

static __inline__ blockinfo* get_blockinfo(uae_u32 cl)
{
    return cache_tags[cl+1].bi;
}

static __inline__ blockinfo* get_blockinfo_addr(void* addr)
{
    blockinfo*  bi=get_blockinfo(cacheline(addr));

    while (bi) {
        if (bi->pc_p==addr)
            return bi;
        bi=bi->next_same_cl;
    }
    return NULL;
}

                
/*******************************************************************
 * All sorts of list related functions for all of the lists        *
 *******************************************************************/

static __inline__ void remove_from_cl_list(blockinfo* bi)
{
    uae_u32 cl=cacheline(bi->pc_p);

    if (bi->prev_same_cl_p) 
        *(bi->prev_same_cl_p)=bi->next_same_cl;
    if (bi->next_same_cl)
        bi->next_same_cl->prev_same_cl_p=bi->prev_same_cl_p;
    if (cache_tags[cl+1].bi)
        cache_tags[cl].handler=cache_tags[cl+1].bi->handler_to_use;
    else
        cache_tags[cl].handler=(cpuop_func *)popall_execute_normal;
}

static __inline__ void remove_from_list(blockinfo* bi)
{
    if (bi->prev_p) 
        *(bi->prev_p)=bi->next;
    if (bi->next)
        bi->next->prev_p=bi->prev_p;
}

static __inline__ void remove_from_lists(blockinfo* bi)
{
    remove_from_list(bi);
    remove_from_cl_list(bi);
}

static __inline__ void add_to_cl_list(blockinfo* bi)
{
    uae_u32 cl=cacheline(bi->pc_p);
    
    if (cache_tags[cl+1].bi)
        cache_tags[cl+1].bi->prev_same_cl_p=&(bi->next_same_cl);
    bi->next_same_cl=cache_tags[cl+1].bi;

    cache_tags[cl+1].bi=bi;
    bi->prev_same_cl_p=&(cache_tags[cl+1].bi);
        
    cache_tags[cl].handler=bi->handler_to_use;
}

static __inline__ void raise_in_cl_list(blockinfo* bi)
{
    remove_from_cl_list(bi);
    add_to_cl_list(bi);
}

static __inline__ void add_to_active(blockinfo* bi)
{
    if (active) 
        active->prev_p=&(bi->next);
    bi->next=active;

    active=bi;
    bi->prev_p=&active;
}

static __inline__ void add_to_dormant(blockinfo* bi)
{
    if (dormant) 
        dormant->prev_p=&(bi->next);
    bi->next=dormant;

    dormant=bi;
    bi->prev_p=&dormant;
}

static __inline__ void remove_dep(dependency* d)
{
    if (d->prev_p) 
        *(d->prev_p)=d->next;
    if (d->next)
        d->next->prev_p=d->prev_p;
    d->prev_p=NULL;
    d->next=NULL;
}

/* This block's code is about to be thrown away, so it no longer
   depends on anything else */
static __inline__ void remove_deps(blockinfo* bi)
{
    remove_dep(&(bi->dep[0]));
    remove_dep(&(bi->dep[1]));
}

static __inline__ void adjust_jmpdep(dependency* d, cpuop_func* a)
{
    *(d->jmp_off)=(uintptr)a-((uintptr)d->jmp_off+4);
}

/********************************************************************
 * Soft flush handling support functions                            *
 ********************************************************************/

static __inline__ void set_dhtu(blockinfo* bi, cpuop_func* dh)
{
    //write_log("bi is %p\n",bi);
    if (dh!=bi->direct_handler_to_use) {
        dependency* x=bi->deplist;
        //write_log("bi->deplist=%p\n",bi->deplist);
        while (x) {
            //write_log("x is %p\n",x);
            //write_log("x->next is %p\n",x->next);
            //write_log("x->prev_p is %p\n",x->prev_p);
            
            if (x->jmp_off) {
                adjust_jmpdep(x,dh);
            }
            x=x->next;
        }
        bi->direct_handler_to_use=dh;
    }
}

static __inline__ void invalidate_block(blockinfo* bi)
{
    int i;

    bi->optlevel=0;
    bi->count=optcount[0]-1;
    bi->handler=NULL;
    bi->handler_to_use=(cpuop_func *)popall_execute_normal;
    bi->direct_handler=NULL;
    set_dhtu(bi,bi->direct_pen);
    bi->needed_flags=0xff;
        bi->status=BI_INVALID;
    for (i=0;i<2;i++) {
        bi->dep[i].jmp_off=NULL;
        bi->dep[i].target=NULL;
    }
    remove_deps(bi);
}

static __inline__ void create_jmpdep(blockinfo* bi, int i, uae_u32* jmpaddr, uae_u32 target)
{
    blockinfo*  tbi=get_blockinfo_addr((void*)target);
    
    Dif(!tbi) {
        write_log("Could not create jmpdep!\n");
        abort();
    }
    bi->dep[i].jmp_off=jmpaddr;
        bi->dep[i].source=bi;
    bi->dep[i].target=tbi;
    bi->dep[i].next=tbi->deplist;
    if (bi->dep[i].next) 
        bi->dep[i].next->prev_p=&(bi->dep[i].next);
    bi->dep[i].prev_p=&(tbi->deplist);
    tbi->deplist=&(bi->dep[i]);
}

static __inline__ void block_need_recompile(blockinfo * bi)
{
  uae_u32 cl = cacheline(bi->pc_p);
  
  set_dhtu(bi, bi->direct_pen);
  bi->direct_handler = bi->direct_pen;
  
  bi->handler_to_use = (cpuop_func *)popall_execute_normal;
  bi->handler = (cpuop_func *)popall_execute_normal;
  if (bi == cache_tags[cl + 1].bi)
        cache_tags[cl].handler = (cpuop_func *)popall_execute_normal;
  bi->status = BI_NEED_RECOMP;
}

static __inline__ void mark_callers_recompile(blockinfo * bi)
{
  dependency *x = bi->deplist;

  while (x)     {
        dependency *next = x->next;     /* This disappears when we mark for
                                                                 * recompilation and thus remove the
                                                                 * blocks from the lists */
        if (x->jmp_off) {
          blockinfo *cbi = x->source;

          Dif(cbi->status == BI_INVALID) {
                // write_log("invalid block in dependency list\n"); // FIXME?
                // abort();
          }
          if (cbi->status == BI_ACTIVE || cbi->status == BI_NEED_CHECK) {
                block_need_recompile(cbi);
                mark_callers_recompile(cbi);
          }
          else if (cbi->status == BI_COMPILING) {
                redo_current_block = 1;
          }
          else if (cbi->status == BI_NEED_RECOMP) {
                /* nothing */
          }
          else {
                //write_log("Status %d in mark_callers\n",cbi->status); // FIXME?
          }
        }
        x = next;
  }
}

static __inline__ blockinfo* get_blockinfo_addr_new(void* addr, int setstate)
{
    blockinfo*  bi=get_blockinfo_addr(addr);
    int i;

    if (!bi) {
        for (i=0;i<MAX_HOLD_BI && !bi;i++) {
            if (hold_bi[i]) {
                uae_u32 cl=cacheline(addr);
                
                bi=hold_bi[i];
                hold_bi[i]=NULL;
                bi->pc_p=(uae_u8 *)addr;
                invalidate_block(bi);
                add_to_active(bi);
                add_to_cl_list(bi);
                
            }
        }
    }
    if (!bi) {
        write_log("Looking for blockinfo, can't find free one\n");
        abort();
    }
    return bi;
}

static void prepare_block(blockinfo* bi);

/* Managment of blockinfos.

   A blockinfo struct is allocated whenever a new block has to be
   compiled. If the list of free blockinfos is empty, we allocate a new
   pool of blockinfos and link the newly created blockinfos altogether
   into the list of free blockinfos. Otherwise, we simply pop a structure
   off the free list.

   Blockinfo are lazily deallocated, i.e. chained altogether in the
   list of free blockinfos whenvever a translation cache flush (hard or
   soft) request occurs.
*/

template< class T >
class LazyBlockAllocator
{
        enum {
                kPoolSize = 1 + 4096 / sizeof(T)
        };
        struct Pool {
                T chunk[kPoolSize];
                Pool * next;
        };
        Pool * mPools;
        T * mChunks;
public:
        LazyBlockAllocator() : mPools(0), mChunks(0) { }
        ~LazyBlockAllocator();
        T * acquire();
        void release(T * const);
};

template< class T >
LazyBlockAllocator<T>::~LazyBlockAllocator()
{
        Pool * currentPool = mPools;
        while (currentPool) {
                Pool * deadPool = currentPool;
                currentPool = currentPool->next;
                free(deadPool);
        }
}

template< class T >
T * LazyBlockAllocator<T>::acquire()
{
        if (!mChunks) {
                // There is no chunk left, allocate a new pool and link the
                // chunks into the free list
                Pool * newPool = (Pool *)malloc(sizeof(Pool));
                for (T * chunk = &newPool->chunk[0]; chunk < &newPool->chunk[kPoolSize]; chunk++) {
                        chunk->next = mChunks;
                        mChunks = chunk;
                }
                newPool->next = mPools;
                mPools = newPool;
        }
        T * chunk = mChunks;
        mChunks = chunk->next;
        return chunk;
}

template< class T >
void LazyBlockAllocator<T>::release(T * const chunk)
{
        chunk->next = mChunks;
        mChunks = chunk;
}

template< class T >
class HardBlockAllocator
{
public:
        T * acquire() {
                T * data = (T *)current_compile_p;
                current_compile_p += sizeof(T);
                return data;
        }

        void release(T * const chunk) {
                // Deallocated on invalidation
        }
};

#if USE_SEPARATE_BIA
static LazyBlockAllocator<blockinfo> BlockInfoAllocator;
static LazyBlockAllocator<checksum_info> ChecksumInfoAllocator;
#else
static HardBlockAllocator<blockinfo> BlockInfoAllocator;
static HardBlockAllocator<checksum_info> ChecksumInfoAllocator;
#endif

static __inline__ checksum_info *alloc_checksum_info(void)
{
        checksum_info *csi = ChecksumInfoAllocator.acquire();
        csi->next = NULL;
        return csi;
}

static __inline__ void free_checksum_info(checksum_info *csi)
{
        csi->next = NULL;
        ChecksumInfoAllocator.release(csi);
}

static __inline__ void free_checksum_info_chain(checksum_info *csi)
{
        while (csi != NULL) {
                checksum_info *csi2 = csi->next;
                free_checksum_info(csi);
                csi = csi2;
        }
}

static __inline__ blockinfo *alloc_blockinfo(void)
{
        blockinfo *bi = BlockInfoAllocator.acquire();
#if USE_CHECKSUM_INFO
        bi->csi = NULL;
#endif
        return bi;
}

static __inline__ void free_blockinfo(blockinfo *bi)
{
#if USE_CHECKSUM_INFO
        free_checksum_info_chain(bi->csi);
        bi->csi = NULL;
#endif
        BlockInfoAllocator.release(bi);
}

static __inline__ void alloc_blockinfos(void) 
{
    int i;
    blockinfo* bi;

    for (i=0;i<MAX_HOLD_BI;i++) {
        if (hold_bi[i])
            return;
        bi=hold_bi[i]=alloc_blockinfo();
        prepare_block(bi);
    }
}

/********************************************************************
 * Functions to emit data into memory, and other general support    *
 ********************************************************************/

static uae_u8* target;

static  void emit_init(void)
{
}

static __inline__ void emit_byte(uae_u8 x)
{
    *target++=x;
}

static __inline__ void emit_word(uae_u16 x)
{
    *((uae_u16*)target)=x;
    target+=2;
}

static __inline__ void emit_long(uae_u32 x)
{
    *((uae_u32*)target)=x;
    target+=4;
}

static __inline__ void emit_block(const uae_u8 *block, uae_u32 blocklen)
{
        memcpy((uae_u8 *)target,block,blocklen);
        target+=blocklen;
}

static __inline__ uae_u32 reverse32(uae_u32 v)
{
#if 1
        // gb-- We have specialized byteswapping functions, just use them
        return do_byteswap_32(v);
#else
        return ((v>>24)&0xff) | ((v>>8)&0xff00) | ((v<<8)&0xff0000) | ((v<<24)&0xff000000);
#endif
}

/********************************************************************
 * Getting the information about the target CPU                     *
 ********************************************************************/

#include "codegen_x86.cpp"

void set_target(uae_u8* t)
{
    target=t;
}

static __inline__ uae_u8* get_target_noopt(void)
{
    return target;
}

__inline__ uae_u8* get_target(void)
{
    return get_target_noopt();
}


/********************************************************************
 * Flags status handling. EMIT TIME!                                *
 ********************************************************************/

static void bt_l_ri_noclobber(R4 r, IMM i);

static void make_flags_live_internal(void)
{
    if (live.flags_in_flags==VALID)
        return;
    Dif (live.flags_on_stack==TRASH) {
        write_log("Want flags, got something on stack, but it is TRASH\n");
        abort();
    }
    if (live.flags_on_stack==VALID) {
        int tmp;
        tmp=readreg_specific(FLAGTMP,4,FLAG_NREG2);
        raw_reg_to_flags(tmp);
        unlock2(tmp);

        live.flags_in_flags=VALID;
        return;
    }
    write_log("Huh? live.flags_in_flags=%d, live.flags_on_stack=%d, but need to make live\n",
           live.flags_in_flags,live.flags_on_stack);
    abort();
}

static void flags_to_stack(void)
{
    if (live.flags_on_stack==VALID)
        return;
    if (!live.flags_are_important) {
        live.flags_on_stack=VALID;
        return;
    }
    Dif (live.flags_in_flags!=VALID)
        abort();
    else  {
        int tmp;
        tmp=writereg_specific(FLAGTMP,4,FLAG_NREG1);
        raw_flags_to_reg(tmp);
        unlock2(tmp);
    }
    live.flags_on_stack=VALID;
}

static __inline__ void clobber_flags(void)
{
    if (live.flags_in_flags==VALID && live.flags_on_stack!=VALID)
        flags_to_stack();
    live.flags_in_flags=TRASH;
}

/* Prepare for leaving the compiled stuff */
static __inline__ void flush_flags(void)
{
    flags_to_stack();
    return;
}

int touchcnt;

/********************************************************************
 * register allocation per block logging                            *
 ********************************************************************/

static uae_s8 vstate[VREGS];
static uae_s8 vwritten[VREGS];
static uae_s8 nstate[N_REGS];

#define L_UNKNOWN -127
#define L_UNAVAIL -1
#define L_NEEDED -2
#define L_UNNEEDED -3

static __inline__ void big_to_small_state(bigstate * b, smallstate * s)
{
  int i;
        
  for (i = 0; i < VREGS; i++)
        s->virt[i] = vstate[i];
  for (i = 0; i < N_REGS; i++)
        s->nat[i] = nstate[i];
}

static __inline__ int callers_need_recompile(bigstate * b, smallstate * s)
{
  int i;
  int reverse = 0;

  for (i = 0; i < VREGS; i++) {
        if (vstate[i] != L_UNNEEDED && s->virt[i] == L_UNNEEDED)
          return 1;
        if (vstate[i] == L_UNNEEDED && s->virt[i] != L_UNNEEDED)
          reverse++;
  }
  for (i = 0; i < N_REGS; i++) {
        if (nstate[i] >= 0 && nstate[i] != s->nat[i])
          return 1;
        if (nstate[i] < 0 && s->nat[i] >= 0)
          reverse++;
  }
  if (reverse >= 2 && USE_MATCH)
        return 1;       /* In this case, it might be worth recompiling the
                                 * callers */
  return 0;
}

static __inline__ void log_startblock(void)
{
  int i;

  for (i = 0; i < VREGS; i++) {
        vstate[i] = L_UNKNOWN;
        vwritten[i] = 0;
  }
  for (i = 0; i < N_REGS; i++)
        nstate[i] = L_UNKNOWN;
}

/* Using an n-reg for a temp variable */
static __inline__ void log_isused(int n)
{
  if (nstate[n] == L_UNKNOWN)
        nstate[n] = L_UNAVAIL;
}

static __inline__ void log_visused(int r)
{
  if (vstate[r] == L_UNKNOWN)
        vstate[r] = L_NEEDED;
}

static __inline__ void do_load_reg(int n, int r)
{
  if (r == FLAGTMP)
        raw_load_flagreg(n, r);
  else if (r == FLAGX)
        raw_load_flagx(n, r);
  else
        raw_mov_l_rm(n, (uae_u32) live.state[r].mem);
}

static __inline__ void check_load_reg(int n, int r)
{
  raw_mov_l_rm(n, (uae_u32) live.state[r].mem);
}

static __inline__ void log_vwrite(int r)
{
  vwritten[r] = 1;
}

/* Using an n-reg to hold a v-reg */
static __inline__ void log_isreg(int n, int r)
{
  static int count = 0;
  
  if (nstate[n] == L_UNKNOWN && r < 16 && !vwritten[r] && USE_MATCH)
        nstate[n] = r;
  else {
        do_load_reg(n, r);
        if (nstate[n] == L_UNKNOWN)
          nstate[n] = L_UNAVAIL;
  }
  if (vstate[r] == L_UNKNOWN)
        vstate[r] = L_NEEDED;
}

static __inline__ void log_clobberreg(int r)
{
  if (vstate[r] == L_UNKNOWN)
        vstate[r] = L_UNNEEDED;
}

/* This ends all possibility of clever register allocation */

static __inline__ void log_flush(void)
{
  int i;
  
  for (i = 0; i < VREGS; i++)
        if (vstate[i] == L_UNKNOWN)
          vstate[i] = L_NEEDED;
  for (i = 0; i < N_REGS; i++)
        if (nstate[i] == L_UNKNOWN)
          nstate[i] = L_UNAVAIL;
}

static __inline__ void log_dump(void)
{
  int i;
  
  return;
  
  write_log("----------------------\n");
  for (i = 0; i < N_REGS; i++) {
        switch (nstate[i]) {
        case L_UNKNOWN:
          write_log("Nat %d : UNKNOWN\n", i);
          break;
        case L_UNAVAIL:
          write_log("Nat %d : UNAVAIL\n", i);
          break;
        default:
          write_log("Nat %d : %d\n", i, nstate[i]);
          break;
        }
  }
  for (i = 0; i < VREGS; i++) {
        if (vstate[i] == L_UNNEEDED)
          write_log("Virt %d: UNNEEDED\n", i);
  }
}

/********************************************************************
 * register status handling. EMIT TIME!                             *
 ********************************************************************/

static __inline__ void set_status(int r, int status)
{
        if (status == ISCONST)
                log_clobberreg(r);
    live.state[r].status=status;
}

static __inline__ int isinreg(int r)
{
    return live.state[r].status==CLEAN || live.state[r].status==DIRTY;
}

static __inline__ void adjust_nreg(int r, uae_u32 val)
{
    if (!val)
        return;
    raw_lea_l_brr(r,r,val);
}

static  void tomem(int r)
{
    int rr=live.state[r].realreg;

    if (isinreg(r)) {
        if (live.state[r].val && live.nat[rr].nholds==1
                && !live.nat[rr].locked) {
            // write_log("RemovingA offset %x from reg %d (%d) at %p\n",
            //   live.state[r].val,r,rr,target); 
            adjust_nreg(rr,live.state[r].val);
            live.state[r].val=0;
            live.state[r].dirtysize=4;
            set_status(r,DIRTY);
        }
    }

    if (live.state[r].status==DIRTY) {
        switch (live.state[r].dirtysize) {
         case 1: raw_mov_b_mr((uae_u32)live.state[r].mem,rr); break;
         case 2: raw_mov_w_mr((uae_u32)live.state[r].mem,rr); break;
         case 4: raw_mov_l_mr((uae_u32)live.state[r].mem,rr); break;
         default: abort();
        }
        log_vwrite(r);
        set_status(r,CLEAN);
        live.state[r].dirtysize=0;
    }
}

static __inline__ int isconst(int r)
{
    return live.state[r].status==ISCONST;
}

int is_const(int r)
{
    return isconst(r);
}

static __inline__ void writeback_const(int r)
{
    if (!isconst(r))
        return;
    Dif (live.state[r].needflush==NF_HANDLER) {
        write_log("Trying to write back constant NF_HANDLER!\n");
        abort();
    }

    raw_mov_l_mi((uae_u32)live.state[r].mem,live.state[r].val);
        log_vwrite(r);
    live.state[r].val=0;
    set_status(r,INMEM);
}

static __inline__ void tomem_c(int r)
{
    if (isconst(r)) {
        writeback_const(r);
    }
    else
        tomem(r);
}

static  void evict(int r)
{
    int rr;

    if (!isinreg(r))
        return;
    tomem(r);
    rr=live.state[r].realreg;

    Dif (live.nat[rr].locked &&
        live.nat[rr].nholds==1) {
        write_log("register %d in nreg %d is locked!\n",r,live.state[r].realreg);
        abort();
    }

    live.nat[rr].nholds--;
    if (live.nat[rr].nholds!=live.state[r].realind) { /* Was not last */
        int topreg=live.nat[rr].holds[live.nat[rr].nholds];
        int thisind=live.state[r].realind;
        
        live.nat[rr].holds[thisind]=topreg;
        live.state[topreg].realind=thisind;
    }
    live.state[r].realreg=-1;
    set_status(r,INMEM);
}

static __inline__ void free_nreg(int r)
{
    int i=live.nat[r].nholds;

    while (i) {
        int vr;

        --i;
        vr=live.nat[r].holds[i];
        evict(vr);
    }
    Dif (live.nat[r].nholds!=0) {
        write_log("Failed to free nreg %d, nholds is %d\n",r,live.nat[r].nholds);
        abort();
    }
}

/* Use with care! */
static __inline__ void isclean(int r)
{
    if (!isinreg(r))
        return;
    live.state[r].validsize=4;
    live.state[r].dirtysize=0;
    live.state[r].val=0;
    set_status(r,CLEAN);
}

static __inline__ void disassociate(int r)
{
    isclean(r);
    evict(r);
}

static __inline__ void set_const(int r, uae_u32 val)
{
    disassociate(r);
    live.state[r].val=val;
    set_status(r,ISCONST);
}

static __inline__ uae_u32 get_offset(int r)
{
    return live.state[r].val;
}

static  int alloc_reg_hinted(int r, int size, int willclobber, int hint)
{
    int bestreg;
    uae_s32 when;
    int i;
    uae_s32 badness=0; /* to shut up gcc */
    bestreg=-1;
    when=2000000000;

    for (i=N_REGS;i--;) {
        badness=live.nat[i].touched;
        if (live.nat[i].nholds==0)
            badness=0;
        if (i==hint)  
            badness-=200000000;
        if (!live.nat[i].locked && badness<when) {
            if ((size==1 && live.nat[i].canbyte) ||
                (size==2 && live.nat[i].canword) ||
                (size==4)) {
                bestreg=i;
                when=badness;
                if (live.nat[i].nholds==0 && hint<0)
                    break;
                if (i==hint)
                    break;
            }
        }
    }
    Dif (bestreg==-1)
        abort();

    if (live.nat[bestreg].nholds>0) {
        free_nreg(bestreg);
    }
    if (isinreg(r)) {
        int rr=live.state[r].realreg;
        /* This will happen if we read a partially dirty register at a
           bigger size */
        Dif (willclobber || live.state[r].validsize>=size)
            abort();
        Dif (live.nat[rr].nholds!=1)
            abort();
        if (size==4 && live.state[r].validsize==2) {
                log_isused(bestreg);
                log_visused(r);
            raw_mov_l_rm(bestreg,(uae_u32)live.state[r].mem);
            raw_bswap_32(bestreg);
            raw_zero_extend_16_rr(rr,rr);
            raw_zero_extend_16_rr(bestreg,bestreg);
            raw_bswap_32(bestreg);
            raw_lea_l_brr_indexed(rr,rr,bestreg,1,0);
            live.state[r].validsize=4;
            live.nat[rr].touched=touchcnt++;
            return rr;
        }
        if (live.state[r].validsize==1) {
            /* Nothing yet */
        }
        evict(r);
    }

    if (!willclobber) {
        if (live.state[r].status!=UNDEF) {
            if (isconst(r)) {
                raw_mov_l_ri(bestreg,live.state[r].val);
                live.state[r].val=0;
                live.state[r].dirtysize=4;
                set_status(r,DIRTY);
                log_isused(bestreg);
            }
            else {
                log_isreg(bestreg, r);  /* This will also load it! */
                live.state[r].dirtysize=0;
                set_status(r,CLEAN);
            }
        }
        else {
            live.state[r].val=0;
            live.state[r].dirtysize=0;
            set_status(r,CLEAN);
                log_isused(bestreg);
        }
        live.state[r].validsize=4;
    }
    else { /* this is the easiest way, but not optimal. FIXME! */
        /* Now it's trickier, but hopefully still OK */
        if (!isconst(r) || size==4) {
            live.state[r].validsize=size;
            live.state[r].dirtysize=size;
            live.state[r].val=0;
            set_status(r,DIRTY);
                if (size == 4) {
                        log_clobberreg(r);
                        log_isused(bestreg);
                }
                else {
                        log_visused(r);
                        log_isused(bestreg);
                }
        }
        else {
            if (live.state[r].status!=UNDEF)
                raw_mov_l_ri(bestreg,live.state[r].val);
            live.state[r].val=0;
            live.state[r].validsize=4;
            live.state[r].dirtysize=4;
            set_status(r,DIRTY);
                log_isused(bestreg);
        }
    }
    live.state[r].realreg=bestreg;
    live.state[r].realind=live.nat[bestreg].nholds;
    live.nat[bestreg].touched=touchcnt++;
    live.nat[bestreg].holds[live.nat[bestreg].nholds]=r;
    live.nat[bestreg].nholds++;

    return bestreg;
}

static  int alloc_reg(int r, int size, int willclobber)
{
    return alloc_reg_hinted(r,size,willclobber,-1);
}

static  void unlock2(int r)
{
    Dif (!live.nat[r].locked)
        abort();
    live.nat[r].locked--;
}

static  void setlock(int r)
{
    live.nat[r].locked++;
}


static void mov_nregs(int d, int s)
{
    int ns=live.nat[s].nholds;
    int nd=live.nat[d].nholds;
    int i;

    if (s==d)
        return;

    if (nd>0) 
        free_nreg(d);

        log_isused(d);
    raw_mov_l_rr(d,s);

    for (i=0;i<live.nat[s].nholds;i++) {
        int vs=live.nat[s].holds[i];

        live.state[vs].realreg=d;
        live.state[vs].realind=i;
        live.nat[d].holds[i]=vs;
    }
    live.nat[d].nholds=live.nat[s].nholds;

    live.nat[s].nholds=0;
}


static __inline__ void make_exclusive(int r, int size, int spec)
{
    int clobber;
    reg_status oldstate;
    int rr=live.state[r].realreg;
    int nr;
    int nind;
    int ndirt=0;
    int i;

    if (!isinreg(r))
        return;
    if (live.nat[rr].nholds==1)
        return;
    for (i=0;i<live.nat[rr].nholds;i++) {
        int vr=live.nat[rr].holds[i];
        if (vr!=r && 
            (live.state[vr].status==DIRTY || live.state[vr].val))
            ndirt++;
    }
    if (!ndirt && size<live.state[r].validsize && !live.nat[rr].locked) { 
        /* Everything else is clean, so let's keep this register */
        for (i=0;i<live.nat[rr].nholds;i++) {
            int vr=live.nat[rr].holds[i];
            if (vr!=r) {
                evict(vr);
                i--; /* Try that index again! */
            }
        }
        Dif (live.nat[rr].nholds!=1) {
            write_log("natreg %d holds %d vregs, %d not exclusive\n",
                   rr,live.nat[rr].nholds,r);
            abort();
        }
        return;
    }

    /* We have to split the register */
    oldstate=live.state[r];

    setlock(rr); /* Make sure this doesn't go away */
    /* Forget about r being in the register rr */
    disassociate(r);
    /* Get a new register, that we will clobber completely */
    if (oldstate.status==DIRTY) {
        /* If dirtysize is <4, we need a register that can handle the
           eventual smaller memory store! Thanks to Quake68k for exposing
           this detail ;-) */
        nr=alloc_reg_hinted(r,oldstate.dirtysize,1,spec);
    }
    else {
        nr=alloc_reg_hinted(r,4,1,spec);
    }
    nind=live.state[r].realind;
    live.state[r]=oldstate;   /* Keep all the old state info */
    live.state[r].realreg=nr;
    live.state[r].realind=nind;

    if (size<live.state[r].validsize) {
        if (live.state[r].val) {
            /* Might as well compensate for the offset now */
            raw_lea_l_brr(nr,rr,oldstate.val);
            live.state[r].val=0;
            live.state[r].dirtysize=4;
            set_status(r,DIRTY);
        }
        else
            raw_mov_l_rr(nr,rr);  /* Make another copy */
    }
    unlock2(rr); 
}

static __inline__ void add_offset(int r, uae_u32 off)
{
    live.state[r].val+=off;
}

static __inline__ void remove_offset(int r, int spec)
{
    reg_status oldstate;
    int rr;

    if (isconst(r))
        return;
    if (live.state[r].val==0)
        return;
    if (isinreg(r) && live.state[r].validsize<4) 
        evict(r);

    if (!isinreg(r)) 
        alloc_reg_hinted(r,4,0,spec);

    Dif (live.state[r].validsize!=4) {
        write_log("Validsize=%d in remove_offset\n",live.state[r].validsize);
        abort();
    }
    make_exclusive(r,0,-1);
    /* make_exclusive might have done the job already */
    if (live.state[r].val==0)
        return;
    
    rr=live.state[r].realreg;

    if (live.nat[rr].nholds==1) {
        //write_log("RemovingB offset %x from reg %d (%d) at %p\n",
        //       live.state[r].val,r,rr,target); 
        adjust_nreg(rr,live.state[r].val);
        live.state[r].dirtysize=4;
        live.state[r].val=0;
        set_status(r,DIRTY);
        return;
    }
    write_log("Failed in remove_offset\n");
    abort();
}

static __inline__ void remove_all_offsets(void)
{
    int i;

    for (i=0;i<VREGS;i++)
        remove_offset(i,-1);
}

static __inline__ int readreg_general(int r, int size, int spec, int can_offset)
{
    int n;
    int answer=-1;
    
        if (live.state[r].status==UNDEF) {
                write_log("WARNING: Unexpected read of undefined register %d\n",r);
        }
    if (!can_offset)
        remove_offset(r,spec);
    
    if (isinreg(r) && live.state[r].validsize>=size) {
        n=live.state[r].realreg;
        switch(size) {
         case 1: 
            if (live.nat[n].canbyte || spec>=0) { 
                answer=n; 
            }
            break;
         case 2: 
            if (live.nat[n].canword || spec>=0) { 
                answer=n; 
            }
            break;
         case 4: 
            answer=n; 
            break;
         default: abort();
        }
        if (answer<0)
            evict(r);
    }
    /* either the value was in memory to start with, or it was evicted and 
       is in memory now */
    if (answer<0) {
        answer=alloc_reg_hinted(r,spec>=0?4:size,0,spec);
    }

    if (spec>=0 && spec!=answer) {
        /* Too bad */
        mov_nregs(spec,answer);
        answer=spec;
    }
    live.nat[answer].locked++;
    live.nat[answer].touched=touchcnt++;
    return answer;
}


static int readreg(int r, int size)
{
    return readreg_general(r,size,-1,0);
}

static int readreg_specific(int r, int size, int spec)
{
    return readreg_general(r,size,spec,0);
}

static int readreg_offset(int r, int size)
{
    return readreg_general(r,size,-1,1);
}

/* writereg_general(r, size, spec)
 *
 * INPUT
 * - r    : mid-layer register
 * - size : requested size (1/2/4)
 * - spec : -1 if find or make a register free, otherwise specifies
 *          the physical register to use in any case
 *
 * OUTPUT
 * - hard (physical, x86 here) register allocated to virtual register r
 */
static __inline__ int writereg_general(int r, int size, int spec)
{
    int n;
    int answer=-1;

    if (size<4) {
        remove_offset(r,spec);
    }

    make_exclusive(r,size,spec);
    if (isinreg(r)) {
        int nvsize=size>live.state[r].validsize?size:live.state[r].validsize;
        int ndsize=size>live.state[r].dirtysize?size:live.state[r].dirtysize;
        n=live.state[r].realreg;

        Dif (live.nat[n].nholds!=1)
            abort();
        switch(size) {
         case 1: 
            if (live.nat[n].canbyte || spec>=0) { 
                live.state[r].dirtysize=ndsize;
                live.state[r].validsize=nvsize;
                answer=n;
            }
            break;
         case 2: 
            if (live.nat[n].canword || spec>=0) { 
                live.state[r].dirtysize=ndsize;
                live.state[r].validsize=nvsize;
                answer=n;
            }
            break;
         case 4: 
            live.state[r].dirtysize=ndsize;
            live.state[r].validsize=nvsize;
            answer=n;
            break;
         default: abort();
        }
        if (answer<0)
            evict(r);
    }
    /* either the value was in memory to start with, or it was evicted and 
       is in memory now */
    if (answer<0) {
        answer=alloc_reg_hinted(r,size,1,spec);
    }
    if (spec>=0 && spec!=answer) {
        mov_nregs(spec,answer);
        answer=spec;
    }
    if (live.state[r].status==UNDEF)
        live.state[r].validsize=4;
    live.state[r].dirtysize=size>live.state[r].dirtysize?size:live.state[r].dirtysize;
    live.state[r].validsize=size>live.state[r].validsize?size:live.state[r].validsize;
    
    live.nat[answer].locked++;
    live.nat[answer].touched=touchcnt++;
    if (size==4) {
        live.state[r].val=0;
    }
    else {
        Dif (live.state[r].val) {
            write_log("Problem with val\n");
            abort();
        }
    }
    set_status(r,DIRTY);
    return answer;
}

static int writereg(int r, int size)
{
    return writereg_general(r,size,-1);
}

static int writereg_specific(int r, int size, int spec)
{
    return writereg_general(r,size,spec);
}

static __inline__ int rmw_general(int r, int wsize, int rsize, int spec)
{
    int n;
    int answer=-1;
    
        if (live.state[r].status==UNDEF) {
                write_log("WARNING: Unexpected read of undefined register %d\n",r);
        }
    remove_offset(r,spec);
    make_exclusive(r,0,spec);

    Dif (wsize<rsize) {
        write_log("Cannot handle wsize<rsize in rmw_general()\n");
        abort();
    }
    if (isinreg(r) && live.state[r].validsize>=rsize) {
        n=live.state[r].realreg;
        Dif (live.nat[n].nholds!=1)
            abort();

        switch(rsize) {
         case 1: 
            if (live.nat[n].canbyte || spec>=0) { 
                answer=n; 
            }
            break;
         case 2: 
            if (live.nat[n].canword || spec>=0) { 
                answer=n; 
            }
            break;
         case 4: 
            answer=n; 
            break;
         default: abort();
        }
        if (answer<0)
            evict(r);
    }
    /* either the value was in memory to start with, or it was evicted and 
       is in memory now */
    if (answer<0) {
        answer=alloc_reg_hinted(r,spec>=0?4:rsize,0,spec);
    }

    if (spec>=0 && spec!=answer) {
        /* Too bad */
        mov_nregs(spec,answer);
        answer=spec;
    }
    if (wsize>live.state[r].dirtysize)
        live.state[r].dirtysize=wsize;
    if (wsize>live.state[r].validsize)
        live.state[r].validsize=wsize;
    set_status(r,DIRTY);

    live.nat[answer].locked++;
    live.nat[answer].touched=touchcnt++;

    Dif (live.state[r].val) {
        write_log("Problem with val(rmw)\n");
        abort();
    }
    return answer;
}

static int rmw(int r, int wsize, int rsize) 
{
    return rmw_general(r,wsize,rsize,-1);
}

static int rmw_specific(int r, int wsize, int rsize, int spec) 
{
    return rmw_general(r,wsize,rsize,spec);
}


/* needed for restoring the carry flag on non-P6 cores */
static void bt_l_ri_noclobber(R4 r, IMM i)
{
    int size=4;
    if (i<16)
        size=2;
    r=readreg(r,size);
    raw_bt_l_ri(r,i);
    unlock2(r);
}

/********************************************************************
 * FPU register status handling. EMIT TIME!                         *
 ********************************************************************/

static  void f_tomem(int r)
{
    if (live.fate[r].status==DIRTY) {
#if USE_LONG_DOUBLE
        raw_fmov_ext_mr((uae_u32)live.fate[r].mem,live.fate[r].realreg); 
#else
        raw_fmov_mr((uae_u32)live.fate[r].mem,live.fate[r].realreg); 
#endif
        live.fate[r].status=CLEAN;
    }
}

static  void f_tomem_drop(int r)
{
    if (live.fate[r].status==DIRTY) {
#if USE_LONG_DOUBLE
        raw_fmov_ext_mr_drop((uae_u32)live.fate[r].mem,live.fate[r].realreg); 
#else
        raw_fmov_mr_drop((uae_u32)live.fate[r].mem,live.fate[r].realreg); 
#endif
        live.fate[r].status=INMEM;
    }
}


static __inline__ int f_isinreg(int r)
{
    return live.fate[r].status==CLEAN || live.fate[r].status==DIRTY;
}

static void f_evict(int r)
{
    int rr;

    if (!f_isinreg(r))
        return;
    rr=live.fate[r].realreg;
    if (live.fat[rr].nholds==1)
        f_tomem_drop(r);
    else
        f_tomem(r);

    Dif (live.fat[rr].locked &&
        live.fat[rr].nholds==1) {
        write_log("FPU register %d in nreg %d is locked!\n",r,live.fate[r].realreg);
        abort();
    }

    live.fat[rr].nholds--;
    if (live.fat[rr].nholds!=live.fate[r].realind) { /* Was not last */
        int topreg=live.fat[rr].holds[live.fat[rr].nholds];
        int thisind=live.fate[r].realind;
        live.fat[rr].holds[thisind]=topreg;
        live.fate[topreg].realind=thisind;
    }
    live.fate[r].status=INMEM;
    live.fate[r].realreg=-1;
}

static __inline__ void f_free_nreg(int r)
{
    int i=live.fat[r].nholds;

    while (i) {
        int vr;

        --i;
        vr=live.fat[r].holds[i];
        f_evict(vr);
    }
    Dif (live.fat[r].nholds!=0) {
        write_log("Failed to free nreg %d, nholds is %d\n",r,live.fat[r].nholds);
        abort();
    }
}


/* Use with care! */
static __inline__ void f_isclean(int r)
{
    if (!f_isinreg(r))
        return;
    live.fate[r].status=CLEAN;
}

static __inline__ void f_disassociate(int r)
{
    f_isclean(r);
    f_evict(r);
}


static  int f_alloc_reg(int r, int willclobber)
{
    int bestreg;
    uae_s32 when;
    int i;
    uae_s32 badness;
    bestreg=-1;
    when=2000000000;
    for (i=N_FREGS;i--;) {
        badness=live.fat[i].touched;
        if (live.fat[i].nholds==0)
            badness=0;

        if (!live.fat[i].locked && badness<when) {
            bestreg=i;
            when=badness;
            if (live.fat[i].nholds==0)
                break;
        }
    }
    Dif (bestreg==-1)
        abort();

    if (live.fat[bestreg].nholds>0) {
        f_free_nreg(bestreg);
    }
    if (f_isinreg(r)) {
        f_evict(r);
    }

    if (!willclobber) {
        if (live.fate[r].status!=UNDEF) {
#if USE_LONG_DOUBLE
            raw_fmov_ext_rm(bestreg,(uae_u32)live.fate[r].mem);
#else
            raw_fmov_rm(bestreg,(uae_u32)live.fate[r].mem);
#endif
        }
        live.fate[r].status=CLEAN;
    }
    else { 
        live.fate[r].status=DIRTY;
    }
    live.fate[r].realreg=bestreg;
    live.fate[r].realind=live.fat[bestreg].nholds;
    live.fat[bestreg].touched=touchcnt++;
    live.fat[bestreg].holds[live.fat[bestreg].nholds]=r;
    live.fat[bestreg].nholds++;

    return bestreg;
}

static  void f_unlock(int r)
{
    Dif (!live.fat[r].locked)
        abort();
    live.fat[r].locked--;
}

static  void f_setlock(int r)
{
    live.fat[r].locked++;
}

static __inline__ int f_readreg(int r)
{
    int n;
    int answer=-1;

    if (f_isinreg(r)) {
        n=live.fate[r].realreg;
        answer=n; 
    }
    /* either the value was in memory to start with, or it was evicted and 
       is in memory now */
    if (answer<0) 
        answer=f_alloc_reg(r,0);

    live.fat[answer].locked++;
    live.fat[answer].touched=touchcnt++;
    return answer;
}

static __inline__ void f_make_exclusive(int r, int clobber)
{
    freg_status oldstate;
    int rr=live.fate[r].realreg;
    int nr;
    int nind;
    int ndirt=0;
    int i;

    if (!f_isinreg(r))
        return;
    if (live.fat[rr].nholds==1)
        return;
    for (i=0;i<live.fat[rr].nholds;i++) {
        int vr=live.fat[rr].holds[i];
        if (vr!=r && live.fate[vr].status==DIRTY)
            ndirt++;
    }
    if (!ndirt && !live.fat[rr].locked) {
                /* Everything else is clean, so let's keep this register */
        for (i=0;i<live.fat[rr].nholds;i++) {
            int vr=live.fat[rr].holds[i];
            if (vr!=r) {
                f_evict(vr);
                i--; /* Try that index again! */
            }
        }
        Dif (live.fat[rr].nholds!=1) {
            write_log("realreg %d holds %d (",rr,live.fat[rr].nholds);
            for (i=0;i<live.fat[rr].nholds;i++) {
                write_log(" %d(%d,%d)",live.fat[rr].holds[i],
                       live.fate[live.fat[rr].holds[i]].realreg,
                       live.fate[live.fat[rr].holds[i]].realind);
            }
            write_log("\n");
            abort();
        }
        return;
    }

    /* We have to split the register */
    oldstate=live.fate[r];

    f_setlock(rr); /* Make sure this doesn't go away */
    /* Forget about r being in the register rr */
    f_disassociate(r);
    /* Get a new register, that we will clobber completely */
    nr=f_alloc_reg(r,1);
    nind=live.fate[r].realind;
    if (!clobber)
        raw_fmov_rr(nr,rr);  /* Make another copy */
    live.fate[r]=oldstate;   /* Keep all the old state info */
    live.fate[r].realreg=nr;
    live.fate[r].realind=nind;
    f_unlock(rr); 
}


static __inline__ int f_writereg(int r)
{
    int n;
    int answer=-1;

    f_make_exclusive(r,1);
    if (f_isinreg(r)) {
        n=live.fate[r].realreg;
        answer=n;
    }
    if (answer<0) {
        answer=f_alloc_reg(r,1);
    }
    live.fate[r].status=DIRTY;
    live.fat[answer].locked++;
    live.fat[answer].touched=touchcnt++;
    return answer;
}

static int f_rmw(int r)
{
    int n;

    f_make_exclusive(r,0);
    if (f_isinreg(r)) {
        n=live.fate[r].realreg;
    }
    else 
        n=f_alloc_reg(r,0);
    live.fate[r].status=DIRTY;
    live.fat[n].locked++;
    live.fat[n].touched=touchcnt++;
    return n;
}

static void fflags_into_flags_internal(uae_u32 tmp)
{
    int r;

    clobber_flags();
    r=f_readreg(FP_RESULT);
        if (FFLAG_NREG_CLOBBER_CONDITION) {
        int tmp2=tmp;
        tmp=writereg_specific(tmp,4,FFLAG_NREG);
        raw_fflags_into_flags(r);
        unlock2(tmp);
        forget_about(tmp2);
        }
        else
    raw_fflags_into_flags(r);
    f_unlock(r);
}


/********************************************************************
 * CPU functions exposed to gencomp. Both CREATE and EMIT time      *
 ********************************************************************/

/* 
 *  RULES FOR HANDLING REGISTERS:
 *
 *  * In the function headers, order the parameters 
 *     - 1st registers written to
 *     - 2nd read/modify/write registers
 *     - 3rd registers read from
 *  * Before calling raw_*, you must call readreg, writereg or rmw for
 *    each register
 *  * The order for this is
 *     - 1st call remove_offset for all registers written to with size<4
 *     - 2nd call readreg for all registers read without offset
 *     - 3rd call rmw for all rmw registers
 *     - 4th call readreg_offset for all registers that can handle offsets
 *     - 5th call get_offset for all the registers from the previous step
 *     - 6th call writereg for all written-to registers
 *     - 7th call raw_*
 *     - 8th unlock2 all registers that were locked
 */

MIDFUNC(0,live_flags,(void))
{
    live.flags_on_stack=TRASH;
    live.flags_in_flags=VALID;
    live.flags_are_important=1;
}
MENDFUNC(0,live_flags,(void))

MIDFUNC(0,dont_care_flags,(void))
{
    live.flags_are_important=0;
}
MENDFUNC(0,dont_care_flags,(void))


MIDFUNC(0,duplicate_carry,(void))
{
    evict(FLAGX);
    make_flags_live_internal();
    COMPCALL(setcc_m)((uae_u32)live.state[FLAGX].mem,2);
        log_vwrite(FLAGX);
}
MENDFUNC(0,duplicate_carry,(void))

MIDFUNC(0,restore_carry,(void))
{
    if (!have_rat_stall) { /* Not a P6 core, i.e. no partial stalls */
        bt_l_ri_noclobber(FLAGX,0);
    }
    else {  /* Avoid the stall the above creates.
               This is slow on non-P6, though.
            */
        COMPCALL(rol_b_ri(FLAGX,8));
        isclean(FLAGX);
    }
}
MENDFUNC(0,restore_carry,(void))

MIDFUNC(0,start_needflags,(void))
{
    needflags=1;
}
MENDFUNC(0,start_needflags,(void))

MIDFUNC(0,end_needflags,(void))
{
    needflags=0;
}
MENDFUNC(0,end_needflags,(void))

MIDFUNC(0,make_flags_live,(void))
{
    make_flags_live_internal();
}
MENDFUNC(0,make_flags_live,(void))

MIDFUNC(1,fflags_into_flags,(W2 tmp))
{
    clobber_flags();
    fflags_into_flags_internal(tmp);
}
MENDFUNC(1,fflags_into_flags,(W2 tmp))


MIDFUNC(2,bt_l_ri,(R4 r, IMM i)) /* This is defined as only affecting C */
{    
    int size=4;
    if (i<16)
        size=2;
    CLOBBER_BT;
    r=readreg(r,size);
    raw_bt_l_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,bt_l_ri,(R4 r, IMM i)) /* This is defined as only affecting C */

MIDFUNC(2,bt_l_rr,(R4 r, R4 b)) /* This is defined as only affecting C */
{
    CLOBBER_BT;
    r=readreg(r,4);
    b=readreg(b,4);
    raw_bt_l_rr(r,b);
    unlock2(r);
    unlock2(b);
}
MENDFUNC(2,bt_l_rr,(R4 r, R4 b)) /* This is defined as only affecting C */

MIDFUNC(2,btc_l_ri,(RW4 r, IMM i)) 
{    
    int size=4;
    if (i<16)
        size=2;
    CLOBBER_BT;
    r=rmw(r,size,size);
    raw_btc_l_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,btc_l_ri,(RW4 r, IMM i)) 

MIDFUNC(2,btc_l_rr,(RW4 r, R4 b)) 
{
    CLOBBER_BT;
    b=readreg(b,4);
    r=rmw(r,4,4);
    raw_btc_l_rr(r,b);
    unlock2(r);
    unlock2(b);
}
MENDFUNC(2,btc_l_rr,(RW4 r, R4 b)) 


MIDFUNC(2,btr_l_ri,(RW4 r, IMM i)) 
{    
    int size=4;
    if (i<16)
        size=2;
    CLOBBER_BT;
    r=rmw(r,size,size);
    raw_btr_l_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,btr_l_ri,(RW4 r, IMM i)) 

MIDFUNC(2,btr_l_rr,(RW4 r, R4 b)) 
{
    CLOBBER_BT;
    b=readreg(b,4);
    r=rmw(r,4,4);
    raw_btr_l_rr(r,b);
    unlock2(r);
    unlock2(b);
}
MENDFUNC(2,btr_l_rr,(RW4 r, R4 b)) 


MIDFUNC(2,bts_l_ri,(RW4 r, IMM i)) 
{    
    int size=4;
    if (i<16)
        size=2;
    CLOBBER_BT;
    r=rmw(r,size,size);
    raw_bts_l_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,bts_l_ri,(RW4 r, IMM i)) 

MIDFUNC(2,bts_l_rr,(RW4 r, R4 b)) 
{
    CLOBBER_BT;
    b=readreg(b,4);
    r=rmw(r,4,4);
    raw_bts_l_rr(r,b);
    unlock2(r);
    unlock2(b);
}
MENDFUNC(2,bts_l_rr,(RW4 r, R4 b)) 

MIDFUNC(2,mov_l_rm,(W4 d, IMM s))
{
    CLOBBER_MOV;
    d=writereg(d,4);
    raw_mov_l_rm(d,s);
    unlock2(d);
}
MENDFUNC(2,mov_l_rm,(W4 d, IMM s))


MIDFUNC(1,call_r,(R4 r)) /* Clobbering is implicit */
{
    r=readreg(r,4);
    raw_call_r(r);
    unlock2(r);
}
MENDFUNC(1,call_r,(R4 r)) /* Clobbering is implicit */

MIDFUNC(2,sub_l_mi,(IMM d, IMM s)) 
{
    CLOBBER_SUB;
    raw_sub_l_mi(d,s) ;
}
MENDFUNC(2,sub_l_mi,(IMM d, IMM s)) 

MIDFUNC(2,mov_l_mi,(IMM d, IMM s)) 
{
    CLOBBER_MOV;
    raw_mov_l_mi(d,s) ;
}
MENDFUNC(2,mov_l_mi,(IMM d, IMM s)) 

MIDFUNC(2,mov_w_mi,(IMM d, IMM s)) 
{
    CLOBBER_MOV;
    raw_mov_w_mi(d,s) ;
}
MENDFUNC(2,mov_w_mi,(IMM d, IMM s)) 

MIDFUNC(2,mov_b_mi,(IMM d, IMM s)) 
{
    CLOBBER_MOV;
    raw_mov_b_mi(d,s) ;
}
MENDFUNC(2,mov_b_mi,(IMM d, IMM s)) 

MIDFUNC(2,rol_b_ri,(RW1 r, IMM i))
{
        if (!i && !needflags)
                return;
    CLOBBER_ROL;
    r=rmw(r,1,1);
    raw_rol_b_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,rol_b_ri,(RW1 r, IMM i))

MIDFUNC(2,rol_w_ri,(RW2 r, IMM i))
{
        if (!i && !needflags)
                return;
    CLOBBER_ROL;
    r=rmw(r,2,2);
    raw_rol_w_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,rol_w_ri,(RW2 r, IMM i))

MIDFUNC(2,rol_l_ri,(RW4 r, IMM i))
{
        if (!i && !needflags)
                return;
    CLOBBER_ROL;
    r=rmw(r,4,4);
    raw_rol_l_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,rol_l_ri,(RW4 r, IMM i))

MIDFUNC(2,rol_l_rr,(RW4 d, R1 r)) 
{ 
    if (isconst(r)) {
        COMPCALL(rol_l_ri)(d,(uae_u8)live.state[r].val);
        return;
    }
    CLOBBER_ROL;
    r=readreg_specific(r,1,SHIFTCOUNT_NREG);
    d=rmw(d,4,4);
    Dif (r!=1) {
        write_log("Illegal register %d in raw_rol_b\n",r);
        abort();
    }
    raw_rol_l_rr(d,r) ;
    unlock2(r);
    unlock2(d);
}
MENDFUNC(2,rol_l_rr,(RW4 d, R1 r)) 

MIDFUNC(2,rol_w_rr,(RW2 d, R1 r)) 
{ /* Can only do this with r==1, i.e. cl */
  
    if (isconst(r)) {
        COMPCALL(rol_w_ri)(d,(uae_u8)live.state[r].val);
        return;
    }
    CLOBBER_ROL;
    r=readreg_specific(r,1,SHIFTCOUNT_NREG);
    d=rmw(d,2,2);
    Dif (r!=1) {
        write_log("Illegal register %d in raw_rol_b\n",r);
        abort();
    }
    raw_rol_w_rr(d,r) ;
    unlock2(r);
    unlock2(d);
}
MENDFUNC(2,rol_w_rr,(RW2 d, R1 r)) 

MIDFUNC(2,rol_b_rr,(RW1 d, R1 r)) 
{ /* Can only do this with r==1, i.e. cl */
  
    if (isconst(r)) {
        COMPCALL(rol_b_ri)(d,(uae_u8)live.state[r].val);
        return;
    }

    CLOBBER_ROL;
    r=readreg_specific(r,1,SHIFTCOUNT_NREG);
    d=rmw(d,1,1);
    Dif (r!=1) {
        write_log("Illegal register %d in raw_rol_b\n",r);
        abort();
    }
    raw_rol_b_rr(d,r) ;
    unlock2(r);
    unlock2(d);
}
MENDFUNC(2,rol_b_rr,(RW1 d, R1 r)) 


MIDFUNC(2,shll_l_rr,(RW4 d, R1 r)) 
{ 
    if (isconst(r)) {
        COMPCALL(shll_l_ri)(d,(uae_u8)live.state[r].val);
        return;
    }
    CLOBBER_SHLL;
    r=readreg_specific(r,1,SHIFTCOUNT_NREG);
    d=rmw(d,4,4);
    Dif (r!=1) {
        write_log("Illegal register %d in raw_rol_b\n",r);
        abort();
    }
    raw_shll_l_rr(d,r) ;
    unlock2(r);
    unlock2(d);
}
MENDFUNC(2,shll_l_rr,(RW4 d, R1 r)) 

MIDFUNC(2,shll_w_rr,(RW2 d, R1 r)) 
{ /* Can only do this with r==1, i.e. cl */
  
    if (isconst(r)) {
        COMPCALL(shll_w_ri)(d,(uae_u8)live.state[r].val);
        return;
    }
    CLOBBER_SHLL;
    r=readreg_specific(r,1,SHIFTCOUNT_NREG);
    d=rmw(d,2,2);
    Dif (r!=1) {
        write_log("Illegal register %d in raw_shll_b\n",r);
        abort();
    }
    raw_shll_w_rr(d,r) ;
    unlock2(r);
    unlock2(d);
}
MENDFUNC(2,shll_w_rr,(RW2 d, R1 r)) 

MIDFUNC(2,shll_b_rr,(RW1 d, R1 r)) 
{ /* Can only do this with r==1, i.e. cl */
  
    if (isconst(r)) {
        COMPCALL(shll_b_ri)(d,(uae_u8)live.state[r].val);
        return;
    }

    CLOBBER_SHLL;
    r=readreg_specific(r,1,SHIFTCOUNT_NREG);
    d=rmw(d,1,1);
    Dif (r!=1) {
        write_log("Illegal register %d in raw_shll_b\n",r);
        abort();
    }
    raw_shll_b_rr(d,r) ;
    unlock2(r);
    unlock2(d);
}
MENDFUNC(2,shll_b_rr,(RW1 d, R1 r)) 


MIDFUNC(2,ror_b_ri,(R1 r, IMM i))
{
        if (!i && !needflags)
                return;
    CLOBBER_ROR;
    r=rmw(r,1,1);
    raw_ror_b_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,ror_b_ri,(R1 r, IMM i))

MIDFUNC(2,ror_w_ri,(R2 r, IMM i))
{
        if (!i && !needflags)
                return;
    CLOBBER_ROR;
    r=rmw(r,2,2);
    raw_ror_w_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,ror_w_ri,(R2 r, IMM i))

MIDFUNC(2,ror_l_ri,(R4 r, IMM i))
{
        if (!i && !needflags)
                return;
    CLOBBER_ROR;
    r=rmw(r,4,4);
    raw_ror_l_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,ror_l_ri,(R4 r, IMM i))

MIDFUNC(2,ror_l_rr,(R4 d, R1 r)) 
{ 
    if (isconst(r)) {
        COMPCALL(ror_l_ri)(d,(uae_u8)live.state[r].val);
        return;
    }
    CLOBBER_ROR;
    r=readreg_specific(r,1,SHIFTCOUNT_NREG);
    d=rmw(d,4,4);
    raw_ror_l_rr(d,r) ;
    unlock2(r);
    unlock2(d);
}
MENDFUNC(2,ror_l_rr,(R4 d, R1 r)) 

MIDFUNC(2,ror_w_rr,(R2 d, R1 r)) 
{ 
    if (isconst(r)) {
        COMPCALL(ror_w_ri)(d,(uae_u8)live.state[r].val);
        return;
    }
    CLOBBER_ROR;
    r=readreg_specific(r,1,SHIFTCOUNT_NREG);
    d=rmw(d,2,2);
    raw_ror_w_rr(d,r) ;
    unlock2(r);
    unlock2(d);
}
MENDFUNC(2,ror_w_rr,(R2 d, R1 r)) 

MIDFUNC(2,ror_b_rr,(R1 d, R1 r)) 
{   
    if (isconst(r)) {
        COMPCALL(ror_b_ri)(d,(uae_u8)live.state[r].val);
        return;
    }

    CLOBBER_ROR;
    r=readreg_specific(r,1,SHIFTCOUNT_NREG);
    d=rmw(d,1,1);
    raw_ror_b_rr(d,r) ;
    unlock2(r);
    unlock2(d);
}
MENDFUNC(2,ror_b_rr,(R1 d, R1 r)) 

MIDFUNC(2,shrl_l_rr,(RW4 d, R1 r)) 
{ 
    if (isconst(r)) {
        COMPCALL(shrl_l_ri)(d,(uae_u8)live.state[r].val);
        return;
    }
    CLOBBER_SHRL;
    r=readreg_specific(r,1,SHIFTCOUNT_NREG);
    d=rmw(d,4,4);
    Dif (r!=1) {
        write_log("Illegal register %d in raw_rol_b\n",r);
        abort();
    }
    raw_shrl_l_rr(d,r) ;
    unlock2(r);
    unlock2(d);
}
MENDFUNC(2,shrl_l_rr,(RW4 d, R1 r)) 

MIDFUNC(2,shrl_w_rr,(RW2 d, R1 r)) 
{ /* Can only do this with r==1, i.e. cl */
  
    if (isconst(r)) {
        COMPCALL(shrl_w_ri)(d,(uae_u8)live.state[r].val);
        return;
    }
    CLOBBER_SHRL;
    r=readreg_specific(r,1,SHIFTCOUNT_NREG);
    d=rmw(d,2,2);
    Dif (r!=1) {
        write_log("Illegal register %d in raw_shrl_b\n",r);
        abort();
    }
    raw_shrl_w_rr(d,r) ;
    unlock2(r);
    unlock2(d);
}
MENDFUNC(2,shrl_w_rr,(RW2 d, R1 r)) 

MIDFUNC(2,shrl_b_rr,(RW1 d, R1 r)) 
{ /* Can only do this with r==1, i.e. cl */
  
    if (isconst(r)) {
        COMPCALL(shrl_b_ri)(d,(uae_u8)live.state[r].val);
        return;
    }

    CLOBBER_SHRL;
    r=readreg_specific(r,1,SHIFTCOUNT_NREG);
    d=rmw(d,1,1);
    Dif (r!=1) {
        write_log("Illegal register %d in raw_shrl_b\n",r);
        abort();
    }
    raw_shrl_b_rr(d,r) ;
    unlock2(r);
    unlock2(d);
}
MENDFUNC(2,shrl_b_rr,(RW1 d, R1 r)) 


MIDFUNC(2,shll_l_ri,(RW4 r, IMM i))
{
    if (!i && !needflags)
        return;
    if (isconst(r) && !needflags) {
        live.state[r].val<<=i;
        return;
    }
    CLOBBER_SHLL;
    r=rmw(r,4,4);
    raw_shll_l_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,shll_l_ri,(RW4 r, IMM i))

MIDFUNC(2,shll_w_ri,(RW2 r, IMM i))
{
    if (!i && !needflags)
        return;
    CLOBBER_SHLL;
    r=rmw(r,2,2);
    raw_shll_w_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,shll_w_ri,(RW2 r, IMM i))

MIDFUNC(2,shll_b_ri,(RW1 r, IMM i))
{
    if (!i && !needflags)
        return;
    CLOBBER_SHLL;
    r=rmw(r,1,1);
    raw_shll_b_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,shll_b_ri,(RW1 r, IMM i))

MIDFUNC(2,shrl_l_ri,(RW4 r, IMM i))
{
    if (!i && !needflags)
        return;
    if (isconst(r) && !needflags) {
        live.state[r].val>>=i;
        return;
    }
    CLOBBER_SHRL;
    r=rmw(r,4,4);
    raw_shrl_l_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,shrl_l_ri,(RW4 r, IMM i))

MIDFUNC(2,shrl_w_ri,(RW2 r, IMM i))
{
    if (!i && !needflags)
        return;
    CLOBBER_SHRL;
    r=rmw(r,2,2);
    raw_shrl_w_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,shrl_w_ri,(RW2 r, IMM i))

MIDFUNC(2,shrl_b_ri,(RW1 r, IMM i))
{
    if (!i && !needflags)
        return;
    CLOBBER_SHRL;
    r=rmw(r,1,1);
    raw_shrl_b_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,shrl_b_ri,(RW1 r, IMM i))

MIDFUNC(2,shra_l_ri,(RW4 r, IMM i))
{
    if (!i && !needflags)
        return;
    CLOBBER_SHRA;
    r=rmw(r,4,4);
    raw_shra_l_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,shra_l_ri,(RW4 r, IMM i))

MIDFUNC(2,shra_w_ri,(RW2 r, IMM i))
{
    if (!i && !needflags)
        return;
    CLOBBER_SHRA;
    r=rmw(r,2,2);
    raw_shra_w_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,shra_w_ri,(RW2 r, IMM i))

MIDFUNC(2,shra_b_ri,(RW1 r, IMM i))
{
    if (!i && !needflags)
        return;
    CLOBBER_SHRA;
    r=rmw(r,1,1);
    raw_shra_b_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,shra_b_ri,(RW1 r, IMM i))

MIDFUNC(2,shra_l_rr,(RW4 d, R1 r)) 
{ 
    if (isconst(r)) {
        COMPCALL(shra_l_ri)(d,(uae_u8)live.state[r].val);
        return;
    }
    CLOBBER_SHRA;
    r=readreg_specific(r,1,SHIFTCOUNT_NREG);
    d=rmw(d,4,4);
    Dif (r!=1) {
        write_log("Illegal register %d in raw_rol_b\n",r);
        abort();
    }
    raw_shra_l_rr(d,r) ;
    unlock2(r);
    unlock2(d);
}
MENDFUNC(2,shra_l_rr,(RW4 d, R1 r)) 

MIDFUNC(2,shra_w_rr,(RW2 d, R1 r)) 
{ /* Can only do this with r==1, i.e. cl */
  
    if (isconst(r)) {
        COMPCALL(shra_w_ri)(d,(uae_u8)live.state[r].val);
        return;
    }
    CLOBBER_SHRA;
    r=readreg_specific(r,1,SHIFTCOUNT_NREG);
    d=rmw(d,2,2);
    Dif (r!=1) {
        write_log("Illegal register %d in raw_shra_b\n",r);
        abort();
    }
    raw_shra_w_rr(d,r) ;
    unlock2(r);
    unlock2(d);
}
MENDFUNC(2,shra_w_rr,(RW2 d, R1 r)) 

MIDFUNC(2,shra_b_rr,(RW1 d, R1 r)) 
{ /* Can only do this with r==1, i.e. cl */
  
    if (isconst(r)) {
        COMPCALL(shra_b_ri)(d,(uae_u8)live.state[r].val);
        return;
    }

    CLOBBER_SHRA;
    r=readreg_specific(r,1,SHIFTCOUNT_NREG);
    d=rmw(d,1,1);
    Dif (r!=1) {
        write_log("Illegal register %d in raw_shra_b\n",r);
        abort();
    }
    raw_shra_b_rr(d,r) ;
    unlock2(r);
    unlock2(d);
}
MENDFUNC(2,shra_b_rr,(RW1 d, R1 r)) 


MIDFUNC(2,setcc,(W1 d, IMM cc))
{
    CLOBBER_SETCC;
    d=writereg(d,1);
    raw_setcc(d,cc);
    unlock2(d);
}
MENDFUNC(2,setcc,(W1 d, IMM cc))

MIDFUNC(2,setcc_m,(IMM d, IMM cc))
{
    CLOBBER_SETCC;
    raw_setcc_m(d,cc);
}
MENDFUNC(2,setcc_m,(IMM d, IMM cc))

MIDFUNC(3,cmov_l_rr,(RW4 d, R4 s, IMM cc))
{
    if (d==s)
        return;
    CLOBBER_CMOV;
    s=readreg(s,4);
    d=rmw(d,4,4);
    raw_cmov_l_rr(d,s,cc);
    unlock2(s);
    unlock2(d);
}
MENDFUNC(3,cmov_l_rr,(RW4 d, R4 s, IMM cc))

MIDFUNC(3,cmov_l_rm,(RW4 d, IMM s, IMM cc))
{
    CLOBBER_CMOV;
    d=rmw(d,4,4);
    raw_cmov_l_rm(d,s,cc);
    unlock2(d);
}
MENDFUNC(3,cmov_l_rm,(RW4 d, IMM s, IMM cc))

MIDFUNC(1,setzflg_l,(RW4 r))
{
        if (setzflg_uses_bsf) {
                CLOBBER_BSF;
                r=rmw(r,4,4);
                raw_bsf_l_rr(r,r);
                unlock2(r);
        }
        else {
                /* Errr, not implemented yet in a generic way. And actually,
                   that should not be generated for now, if BSF doesn't
                   preserve flags but ZF.  */
                write_log("attempt to make unsupported setzflg()\n");
                abort();
        }
}
MENDFUNC(1,setzflg_l,(RW4 r))

MIDFUNC(2,imul_32_32,(RW4 d, R4 s))
{
    CLOBBER_MUL;
    s=readreg(s,4);
    d=rmw(d,4,4);
    raw_imul_32_32(d,s);
    unlock2(s);
    unlock2(d);
}
MENDFUNC(2,imul_32_32,(RW4 d, R4 s))

MIDFUNC(2,imul_64_32,(RW4 d, RW4 s))
{
    CLOBBER_MUL;
    s=rmw_specific(s,4,4,MUL_NREG2);
    d=rmw_specific(d,4,4,MUL_NREG1);
    raw_imul_64_32(d,s);
    unlock2(s);
    unlock2(d);
}
MENDFUNC(2,imul_64_32,(RW4 d, RW4 s))

MIDFUNC(2,mul_64_32,(RW4 d, RW4 s))
{
    CLOBBER_MUL;
    s=rmw_specific(s,4,4,MUL_NREG2);
    d=rmw_specific(d,4,4,MUL_NREG1);
    raw_mul_64_32(d,s);
    unlock2(s);
    unlock2(d);
}
MENDFUNC(2,mul_64_32,(RW4 d, RW4 s))

MIDFUNC(2,mul_32_32,(RW4 d, R4 s))
{
    CLOBBER_MUL;
    s=readreg(s,4);
    d=rmw(d,4,4);
    raw_mul_32_32(d,s);
    unlock2(s);
    unlock2(d);
}
MENDFUNC(2,mul_32_32,(RW4 d, R4 s))

MIDFUNC(2,sign_extend_16_rr,(W4 d, R2 s))
{
    int isrmw;

    if (isconst(s)) {
        set_const(d,(uae_s32)(uae_s16)live.state[s].val);
        return;
    }

    CLOBBER_SE16;
    isrmw=(s==d);
    if (!isrmw) {
        s=readreg(s,2);
        d=writereg(d,4);
    }
    else {  /* If we try to lock this twice, with different sizes, we
               are int trouble! */
        s=d=rmw(s,4,2);
    }
    raw_sign_extend_16_rr(d,s);
    if (!isrmw) {
        unlock2(d);
        unlock2(s);
    }
    else {
        unlock2(s);
    }
}
MENDFUNC(2,sign_extend_16_rr,(W4 d, R2 s))

MIDFUNC(2,sign_extend_8_rr,(W4 d, R1 s))
{
    int isrmw;

    if (isconst(s)) {
        set_const(d,(uae_s32)(uae_s8)live.state[s].val);
        return;
    }

    isrmw=(s==d);
    CLOBBER_SE8;
    if (!isrmw) {
        s=readreg(s,1);
        d=writereg(d,4);
    }
    else {  /* If we try to lock this twice, with different sizes, we
               are int trouble! */
        s=d=rmw(s,4,1);
    }
  
    raw_sign_extend_8_rr(d,s);

    if (!isrmw) {
        unlock2(d);
        unlock2(s);
    }
    else {
        unlock2(s);
    }
}
MENDFUNC(2,sign_extend_8_rr,(W4 d, R1 s))


MIDFUNC(2,zero_extend_16_rr,(W4 d, R2 s))
{
    int isrmw;

    if (isconst(s)) {
        set_const(d,(uae_u32)(uae_u16)live.state[s].val);
        return;
    }

    isrmw=(s==d);
    CLOBBER_ZE16;
    if (!isrmw) {
        s=readreg(s,2);
        d=writereg(d,4);
    }
    else {  /* If we try to lock this twice, with different sizes, we
               are int trouble! */
        s=d=rmw(s,4,2);
    }
    raw_zero_extend_16_rr(d,s);
    if (!isrmw) {
        unlock2(d);
        unlock2(s);
    }
    else {
        unlock2(s);
    }
}
MENDFUNC(2,zero_extend_16_rr,(W4 d, R2 s))

MIDFUNC(2,zero_extend_8_rr,(W4 d, R1 s))
{
    int isrmw;
    if (isconst(s)) {
        set_const(d,(uae_u32)(uae_u8)live.state[s].val);
        return;
    }

    isrmw=(s==d);
    CLOBBER_ZE8;
    if (!isrmw) {
        s=readreg(s,1);
        d=writereg(d,4);
    }
    else {  /* If we try to lock this twice, with different sizes, we
               are int trouble! */
        s=d=rmw(s,4,1);
    }
  
    raw_zero_extend_8_rr(d,s);

    if (!isrmw) {
        unlock2(d);
        unlock2(s);
    }
    else {
        unlock2(s);
    }
}
MENDFUNC(2,zero_extend_8_rr,(W4 d, R1 s))

MIDFUNC(2,mov_b_rr,(W1 d, R1 s))
{
    if (d==s)
        return;
    if (isconst(s)) {
        COMPCALL(mov_b_ri)(d,(uae_u8)live.state[s].val);
        return;
    }

    CLOBBER_MOV;
    s=readreg(s,1);
    d=writereg(d,1);
    raw_mov_b_rr(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,mov_b_rr,(W1 d, R1 s))

MIDFUNC(2,mov_w_rr,(W2 d, R2 s))
{
    if (d==s)
        return;
    if (isconst(s)) {
        COMPCALL(mov_w_ri)(d,(uae_u16)live.state[s].val);
        return;
    }

    CLOBBER_MOV;
    s=readreg(s,2);
    d=writereg(d,2);
    raw_mov_w_rr(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,mov_w_rr,(W2 d, R2 s))


MIDFUNC(4,mov_l_rrm_indexed,(W4 d,R4 baser, R4 index, IMM factor))
{
    CLOBBER_MOV;
    baser=readreg(baser,4);
    index=readreg(index,4);
    d=writereg(d,4);

    raw_mov_l_rrm_indexed(d,baser,index,factor);
    unlock2(d);
    unlock2(baser);
    unlock2(index);
}
MENDFUNC(4,mov_l_rrm_indexed,(W4 d,R4 baser, R4 index, IMM factor))

MIDFUNC(4,mov_w_rrm_indexed,(W2 d, R4 baser, R4 index, IMM factor))
{
    CLOBBER_MOV;
    baser=readreg(baser,4);
    index=readreg(index,4);
    d=writereg(d,2);

    raw_mov_w_rrm_indexed(d,baser,index,factor);
    unlock2(d);
    unlock2(baser);
    unlock2(index);
}
MENDFUNC(4,mov_w_rrm_indexed,(W2 d, R4 baser, R4 index, IMM factor))

MIDFUNC(4,mov_b_rrm_indexed,(W1 d, R4 baser, R4 index, IMM factor))
{
    CLOBBER_MOV;
    baser=readreg(baser,4);
    index=readreg(index,4);
    d=writereg(d,1);

    raw_mov_b_rrm_indexed(d,baser,index,factor);

    unlock2(d);
    unlock2(baser);
    unlock2(index);
}
MENDFUNC(4,mov_b_rrm_indexed,(W1 d, R4 baser, R4 index, IMM factor))


MIDFUNC(4,mov_l_mrr_indexed,(R4 baser, R4 index, IMM factor, R4 s))
{
    CLOBBER_MOV;
    baser=readreg(baser,4);
    index=readreg(index,4);
    s=readreg(s,4);

    Dif (baser==s || index==s) 
        abort();


    raw_mov_l_mrr_indexed(baser,index,factor,s);
    unlock2(s);
    unlock2(baser);
    unlock2(index);
}
MENDFUNC(4,mov_l_mrr_indexed,(R4 baser, R4 index, IMM factor, R4 s))

MIDFUNC(4,mov_w_mrr_indexed,(R4 baser, R4 index, IMM factor, R2 s))
{
    CLOBBER_MOV;
    baser=readreg(baser,4);
    index=readreg(index,4);
    s=readreg(s,2);

    raw_mov_w_mrr_indexed(baser,index,factor,s);
    unlock2(s);
    unlock2(baser);
    unlock2(index);
}
MENDFUNC(4,mov_w_mrr_indexed,(R4 baser, R4 index, IMM factor, R2 s))

MIDFUNC(4,mov_b_mrr_indexed,(R4 baser, R4 index, IMM factor, R1 s))
{
    CLOBBER_MOV;
    s=readreg(s,1);
    baser=readreg(baser,4);
    index=readreg(index,4);

    raw_mov_b_mrr_indexed(baser,index,factor,s);
    unlock2(s);
    unlock2(baser);
    unlock2(index);
}
MENDFUNC(4,mov_b_mrr_indexed,(R4 baser, R4 index, IMM factor, R1 s))


MIDFUNC(5,mov_l_bmrr_indexed,(IMM base, R4 baser, R4 index, IMM factor, R4 s))
{
    int basereg=baser;
    int indexreg=index;

    CLOBBER_MOV;
    s=readreg(s,4);
    baser=readreg_offset(baser,4);
    index=readreg_offset(index,4);

    base+=get_offset(basereg);
    base+=factor*get_offset(indexreg);

    raw_mov_l_bmrr_indexed(base,baser,index,factor,s);
    unlock2(s);
    unlock2(baser);
    unlock2(index);
}
MENDFUNC(5,mov_l_bmrr_indexed,(IMM base, R4 baser, R4 index, IMM factor, R4 s))

MIDFUNC(5,mov_w_bmrr_indexed,(IMM base, R4 baser, R4 index, IMM factor, R2 s))
{
    int basereg=baser;
    int indexreg=index;

    CLOBBER_MOV;
    s=readreg(s,2);
    baser=readreg_offset(baser,4);
    index=readreg_offset(index,4);

    base+=get_offset(basereg);
    base+=factor*get_offset(indexreg);

    raw_mov_w_bmrr_indexed(base,baser,index,factor,s);
    unlock2(s);
    unlock2(baser);
    unlock2(index);
}
MENDFUNC(5,mov_w_bmrr_indexed,(IMM base, R4 baser, R4 index, IMM factor, R2 s))

MIDFUNC(5,mov_b_bmrr_indexed,(IMM base, R4 baser, R4 index, IMM factor, R1 s))
{
    int basereg=baser;
    int indexreg=index;

    CLOBBER_MOV;
    s=readreg(s,1);
    baser=readreg_offset(baser,4);
    index=readreg_offset(index,4);

    base+=get_offset(basereg);
    base+=factor*get_offset(indexreg);

    raw_mov_b_bmrr_indexed(base,baser,index,factor,s);
    unlock2(s);
    unlock2(baser);
    unlock2(index);
}
MENDFUNC(5,mov_b_bmrr_indexed,(IMM base, R4 baser, R4 index, IMM factor, R1 s))


/* Read a long from base+baser+factor*index */
MIDFUNC(5,mov_l_brrm_indexed,(W4 d, IMM base, R4 baser, R4 index, IMM factor))
{
    int basereg=baser;
    int indexreg=index;

    CLOBBER_MOV;
    baser=readreg_offset(baser,4);
    index=readreg_offset(index,4);
    base+=get_offset(basereg);
    base+=factor*get_offset(indexreg);    
    d=writereg(d,4);
    raw_mov_l_brrm_indexed(d,base,baser,index,factor);
    unlock2(d);
    unlock2(baser);
    unlock2(index);
}
MENDFUNC(5,mov_l_brrm_indexed,(W4 d, IMM base, R4 baser, R4 index, IMM factor))


MIDFUNC(5,mov_w_brrm_indexed,(W2 d, IMM base, R4 baser, R4 index, IMM factor))
{
    int basereg=baser;
    int indexreg=index;

    CLOBBER_MOV;
    remove_offset(d,-1);
    baser=readreg_offset(baser,4);
    index=readreg_offset(index,4);
    base+=get_offset(basereg);
    base+=factor*get_offset(indexreg);    
    d=writereg(d,2);
    raw_mov_w_brrm_indexed(d,base,baser,index,factor);
    unlock2(d);
    unlock2(baser);
    unlock2(index);
}
MENDFUNC(5,mov_w_brrm_indexed,(W2 d, IMM base, R4 baser, R4 index, IMM factor))


MIDFUNC(5,mov_b_brrm_indexed,(W1 d, IMM base, R4 baser, R4 index, IMM factor))
{
    int basereg=baser;
    int indexreg=index;

    CLOBBER_MOV;
    remove_offset(d,-1);
    baser=readreg_offset(baser,4);
    index=readreg_offset(index,4);
    base+=get_offset(basereg);
    base+=factor*get_offset(indexreg);    
    d=writereg(d,1);
    raw_mov_b_brrm_indexed(d,base,baser,index,factor);
    unlock2(d);
    unlock2(baser);
    unlock2(index);
}
MENDFUNC(5,mov_b_brrm_indexed,(W1 d, IMM base, R4 baser, R4 index, IMM factor))

/* Read a long from base+factor*index */
MIDFUNC(4,mov_l_rm_indexed,(W4 d, IMM base, R4 index, IMM factor))
{
    int indexreg=index;

    if (isconst(index)) {
        COMPCALL(mov_l_rm)(d,base+factor*live.state[index].val);
        return;
    }

    CLOBBER_MOV;
    index=readreg_offset(index,4);
    base+=get_offset(indexreg)*factor;
    d=writereg(d,4);

    raw_mov_l_rm_indexed(d,base,index,factor);
    unlock2(index);
    unlock2(d);
}
MENDFUNC(4,mov_l_rm_indexed,(W4 d, IMM base, R4 index, IMM factor))


/* read the long at the address contained in s+offset and store in d */
MIDFUNC(3,mov_l_rR,(W4 d, R4 s, IMM offset))
{
    if (isconst(s)) {
        COMPCALL(mov_l_rm)(d,live.state[s].val+offset);
        return;
    }
    CLOBBER_MOV;
    s=readreg(s,4);
    d=writereg(d,4);

    raw_mov_l_rR(d,s,offset);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(3,mov_l_rR,(W4 d, R4 s, IMM offset))

/* read the word at the address contained in s+offset and store in d */
MIDFUNC(3,mov_w_rR,(W2 d, R4 s, IMM offset))
{
    if (isconst(s)) {
        COMPCALL(mov_w_rm)(d,live.state[s].val+offset);
        return;
    }
    CLOBBER_MOV;
    s=readreg(s,4);
    d=writereg(d,2);

    raw_mov_w_rR(d,s,offset);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(3,mov_w_rR,(W2 d, R4 s, IMM offset))

/* read the word at the address contained in s+offset and store in d */
MIDFUNC(3,mov_b_rR,(W1 d, R4 s, IMM offset))
{
    if (isconst(s)) {
        COMPCALL(mov_b_rm)(d,live.state[s].val+offset);
        return;
    }
    CLOBBER_MOV;
    s=readreg(s,4);
    d=writereg(d,1);

    raw_mov_b_rR(d,s,offset);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(3,mov_b_rR,(W1 d, R4 s, IMM offset))

/* read the long at the address contained in s+offset and store in d */
MIDFUNC(3,mov_l_brR,(W4 d, R4 s, IMM offset))
{
    int sreg=s;
    if (isconst(s)) {
        COMPCALL(mov_l_rm)(d,live.state[s].val+offset);
        return;
    }
    CLOBBER_MOV;
    s=readreg_offset(s,4);
    offset+=get_offset(sreg);
    d=writereg(d,4);
    
    raw_mov_l_brR(d,s,offset);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(3,mov_l_brR,(W4 d, R4 s, IMM offset))

/* read the word at the address contained in s+offset and store in d */
MIDFUNC(3,mov_w_brR,(W2 d, R4 s, IMM offset))
{
    int sreg=s;
    if (isconst(s)) {
        COMPCALL(mov_w_rm)(d,live.state[s].val+offset);
        return;
    }
    CLOBBER_MOV;
    remove_offset(d,-1);
    s=readreg_offset(s,4);
    offset+=get_offset(sreg);
    d=writereg(d,2);

    raw_mov_w_brR(d,s,offset);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(3,mov_w_brR,(W2 d, R4 s, IMM offset))

/* read the word at the address contained in s+offset and store in d */
MIDFUNC(3,mov_b_brR,(W1 d, R4 s, IMM offset))
{
    int sreg=s;
    if (isconst(s)) {
        COMPCALL(mov_b_rm)(d,live.state[s].val+offset);
        return;
    }
    CLOBBER_MOV;
    remove_offset(d,-1);
    s=readreg_offset(s,4);
    offset+=get_offset(sreg);
    d=writereg(d,1);

    raw_mov_b_brR(d,s,offset);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(3,mov_b_brR,(W1 d, R4 s, IMM offset))

MIDFUNC(3,mov_l_Ri,(R4 d, IMM i, IMM offset))
{
    int dreg=d;
    if (isconst(d)) {
        COMPCALL(mov_l_mi)(live.state[d].val+offset,i);
        return;
    }

    CLOBBER_MOV;
    d=readreg_offset(d,4);
    offset+=get_offset(dreg);
    raw_mov_l_Ri(d,i,offset);
    unlock2(d);
}
MENDFUNC(3,mov_l_Ri,(R4 d, IMM i, IMM offset))

MIDFUNC(3,mov_w_Ri,(R4 d, IMM i, IMM offset))
{
    int dreg=d;
    if (isconst(d)) {
        COMPCALL(mov_w_mi)(live.state[d].val+offset,i);
        return;
    }

    CLOBBER_MOV;
    d=readreg_offset(d,4);
    offset+=get_offset(dreg);
    raw_mov_w_Ri(d,i,offset);
    unlock2(d);
}
MENDFUNC(3,mov_w_Ri,(R4 d, IMM i, IMM offset))

MIDFUNC(3,mov_b_Ri,(R4 d, IMM i, IMM offset))
{
    int dreg=d;
    if (isconst(d)) {
        COMPCALL(mov_b_mi)(live.state[d].val+offset,i);
        return;
    }

    CLOBBER_MOV;
    d=readreg_offset(d,4);
    offset+=get_offset(dreg);
    raw_mov_b_Ri(d,i,offset);
    unlock2(d);
}
MENDFUNC(3,mov_b_Ri,(R4 d, IMM i, IMM offset))

     /* Warning! OFFSET is byte sized only! */
MIDFUNC(3,mov_l_Rr,(R4 d, R4 s, IMM offset))
{
    if (isconst(d)) {
        COMPCALL(mov_l_mr)(live.state[d].val+offset,s);
        return;
    }
    if (isconst(s)) {
        COMPCALL(mov_l_Ri)(d,live.state[s].val,offset);
        return;
    }

    CLOBBER_MOV;
    s=readreg(s,4);
    d=readreg(d,4);

    raw_mov_l_Rr(d,s,offset);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(3,mov_l_Rr,(R4 d, R4 s, IMM offset))

MIDFUNC(3,mov_w_Rr,(R4 d, R2 s, IMM offset))
{
    if (isconst(d)) {
        COMPCALL(mov_w_mr)(live.state[d].val+offset,s);
        return;
    }
    if (isconst(s)) {
        COMPCALL(mov_w_Ri)(d,(uae_u16)live.state[s].val,offset);
        return;
    }

    CLOBBER_MOV;
    s=readreg(s,2);
    d=readreg(d,4);
    raw_mov_w_Rr(d,s,offset);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(3,mov_w_Rr,(R4 d, R2 s, IMM offset))

MIDFUNC(3,mov_b_Rr,(R4 d, R1 s, IMM offset))
{
    if (isconst(d)) {
        COMPCALL(mov_b_mr)(live.state[d].val+offset,s);
        return;
    }
    if (isconst(s)) {
        COMPCALL(mov_b_Ri)(d,(uae_u8)live.state[s].val,offset);
        return;
    }

    CLOBBER_MOV;
    s=readreg(s,1);
    d=readreg(d,4);
    raw_mov_b_Rr(d,s,offset);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(3,mov_b_Rr,(R4 d, R1 s, IMM offset))

MIDFUNC(3,lea_l_brr,(W4 d, R4 s, IMM offset))
{
    if (isconst(s)) {
        COMPCALL(mov_l_ri)(d,live.state[s].val+offset);
        return;
    }
#if USE_OFFSET
    if (d==s) {
        add_offset(d,offset);
        return;
    }
#endif
    CLOBBER_LEA;
    s=readreg(s,4);
    d=writereg(d,4);
    raw_lea_l_brr(d,s,offset);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(3,lea_l_brr,(W4 d, R4 s, IMM offset))

MIDFUNC(5,lea_l_brr_indexed,(W4 d, R4 s, R4 index, IMM factor, IMM offset))
{
    if (!offset) {
        COMPCALL(lea_l_rr_indexed)(d,s,index,factor);
        return;
    }
    CLOBBER_LEA;
    s=readreg(s,4);
    index=readreg(index,4);
    d=writereg(d,4);

    raw_lea_l_brr_indexed(d,s,index,factor,offset);
    unlock2(d);
    unlock2(index);
    unlock2(s);
}
MENDFUNC(5,lea_l_brr_indexed,(W4 d, R4 s, R4 index, IMM factor, IMM offset))

MIDFUNC(4,lea_l_rr_indexed,(W4 d, R4 s, R4 index, IMM factor))
{
    CLOBBER_LEA;
    s=readreg(s,4);
    index=readreg(index,4);
    d=writereg(d,4);

    raw_lea_l_rr_indexed(d,s,index,factor);
    unlock2(d);
    unlock2(index);
    unlock2(s);
}
MENDFUNC(4,lea_l_rr_indexed,(W4 d, R4 s, R4 index, IMM factor))

/* write d to the long at the address contained in s+offset */
MIDFUNC(3,mov_l_bRr,(R4 d, R4 s, IMM offset))
{
    int dreg=d;
    if (isconst(d)) {
        COMPCALL(mov_l_mr)(live.state[d].val+offset,s);
        return;
    }

    CLOBBER_MOV;
    s=readreg(s,4);
    d=readreg_offset(d,4);
    offset+=get_offset(dreg);

    raw_mov_l_bRr(d,s,offset);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(3,mov_l_bRr,(R4 d, R4 s, IMM offset))

/* write the word at the address contained in s+offset and store in d */
MIDFUNC(3,mov_w_bRr,(R4 d, R2 s, IMM offset))
{
    int dreg=d;

    if (isconst(d)) {
        COMPCALL(mov_w_mr)(live.state[d].val+offset,s);
        return;
    }

    CLOBBER_MOV;
    s=readreg(s,2);
    d=readreg_offset(d,4);
    offset+=get_offset(dreg);
    raw_mov_w_bRr(d,s,offset);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(3,mov_w_bRr,(R4 d, R2 s, IMM offset))

MIDFUNC(3,mov_b_bRr,(R4 d, R1 s, IMM offset))
{
    int dreg=d;
    if (isconst(d)) {
        COMPCALL(mov_b_mr)(live.state[d].val+offset,s);
        return;
    }

    CLOBBER_MOV;
    s=readreg(s,1);
    d=readreg_offset(d,4);
    offset+=get_offset(dreg);
    raw_mov_b_bRr(d,s,offset);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(3,mov_b_bRr,(R4 d, R1 s, IMM offset))

MIDFUNC(1,bswap_32,(RW4 r))
{
    int reg=r;

    if (isconst(r)) {
        uae_u32 oldv=live.state[r].val;
        live.state[r].val=reverse32(oldv);
        return;
    }
    
    CLOBBER_SW32;
    r=rmw(r,4,4);  
    raw_bswap_32(r);
    unlock2(r);
}
MENDFUNC(1,bswap_32,(RW4 r))

MIDFUNC(1,bswap_16,(RW2 r))
{
    if (isconst(r)) {
        uae_u32 oldv=live.state[r].val;
        live.state[r].val=((oldv>>8)&0xff) | ((oldv<<8)&0xff00) |
            (oldv&0xffff0000);
        return;
    }

    CLOBBER_SW16;
    r=rmw(r,2,2);
  
    raw_bswap_16(r);
    unlock2(r);
}
MENDFUNC(1,bswap_16,(RW2 r))


MIDFUNC(2,mov_l_rr,(W4 d, R4 s))
{
    int olds;

    if (d==s) { /* How pointless! */
        return;
    }
    if (isconst(s)) {
        COMPCALL(mov_l_ri)(d,live.state[s].val);
        return;
    }
    olds=s;
    disassociate(d);
    s=readreg_offset(s,4);
    live.state[d].realreg=s;
    live.state[d].realind=live.nat[s].nholds;
    live.state[d].val=live.state[olds].val;
    live.state[d].validsize=4;
    live.state[d].dirtysize=4;
    set_status(d,DIRTY);

    live.nat[s].holds[live.nat[s].nholds]=d;
    live.nat[s].nholds++;
    log_clobberreg(d);
    /* write_log("Added %d to nreg %d(%d), now holds %d regs\n",
       d,s,live.state[d].realind,live.nat[s].nholds); */
    unlock2(s);
}
MENDFUNC(2,mov_l_rr,(W4 d, R4 s))

MIDFUNC(2,mov_l_mr,(IMM d, R4 s))
{
    if (isconst(s)) {
        COMPCALL(mov_l_mi)(d,live.state[s].val);
        return;
    }
    CLOBBER_MOV;
    s=readreg(s,4);

    raw_mov_l_mr(d,s);
    unlock2(s);
}
MENDFUNC(2,mov_l_mr,(IMM d, R4 s))


MIDFUNC(2,mov_w_mr,(IMM d, R2 s))
{
    if (isconst(s)) {
        COMPCALL(mov_w_mi)(d,(uae_u16)live.state[s].val);
        return;
    }
    CLOBBER_MOV;
    s=readreg(s,2);

    raw_mov_w_mr(d,s);
    unlock2(s);
}
MENDFUNC(2,mov_w_mr,(IMM d, R2 s))

MIDFUNC(2,mov_w_rm,(W2 d, IMM s))
{
    CLOBBER_MOV;
    d=writereg(d,2);

    raw_mov_w_rm(d,s);
    unlock2(d);
}
MENDFUNC(2,mov_w_rm,(W2 d, IMM s))

MIDFUNC(2,mov_b_mr,(IMM d, R1 s))
{
    if (isconst(s)) {
        COMPCALL(mov_b_mi)(d,(uae_u8)live.state[s].val);
        return;
    }

    CLOBBER_MOV;
    s=readreg(s,1);

    raw_mov_b_mr(d,s);
    unlock2(s);
}
MENDFUNC(2,mov_b_mr,(IMM d, R1 s))

MIDFUNC(2,mov_b_rm,(W1 d, IMM s))
{
    CLOBBER_MOV;
    d=writereg(d,1);

    raw_mov_b_rm(d,s);
    unlock2(d);
}
MENDFUNC(2,mov_b_rm,(W1 d, IMM s))

MIDFUNC(2,mov_l_ri,(W4 d, IMM s))
{
    set_const(d,s);
    return;
}
MENDFUNC(2,mov_l_ri,(W4 d, IMM s))

MIDFUNC(2,mov_w_ri,(W2 d, IMM s))
{
    CLOBBER_MOV;
    d=writereg(d,2);

    raw_mov_w_ri(d,s);
    unlock2(d);
}
MENDFUNC(2,mov_w_ri,(W2 d, IMM s))

MIDFUNC(2,mov_b_ri,(W1 d, IMM s))
{
    CLOBBER_MOV;
    d=writereg(d,1);

    raw_mov_b_ri(d,s);
    unlock2(d);
}
MENDFUNC(2,mov_b_ri,(W1 d, IMM s))


MIDFUNC(2,add_l_mi,(IMM d, IMM s)) 
{
    CLOBBER_ADD;
    raw_add_l_mi(d,s) ;
}
MENDFUNC(2,add_l_mi,(IMM d, IMM s)) 

MIDFUNC(2,add_w_mi,(IMM d, IMM s)) 
{
    CLOBBER_ADD;
    raw_add_w_mi(d,s) ;
}
MENDFUNC(2,add_w_mi,(IMM d, IMM s)) 

MIDFUNC(2,add_b_mi,(IMM d, IMM s)) 
{
    CLOBBER_ADD;
    raw_add_b_mi(d,s) ;
}
MENDFUNC(2,add_b_mi,(IMM d, IMM s)) 


MIDFUNC(2,test_l_ri,(R4 d, IMM i))
{
    CLOBBER_TEST;
    d=readreg(d,4);

    raw_test_l_ri(d,i);
    unlock2(d);
}
MENDFUNC(2,test_l_ri,(R4 d, IMM i))

MIDFUNC(2,test_l_rr,(R4 d, R4 s))
{
    CLOBBER_TEST;
    d=readreg(d,4);
    s=readreg(s,4);

    raw_test_l_rr(d,s);;
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,test_l_rr,(R4 d, R4 s))

MIDFUNC(2,test_w_rr,(R2 d, R2 s))
{
    CLOBBER_TEST;
    d=readreg(d,2);
    s=readreg(s,2);

    raw_test_w_rr(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,test_w_rr,(R2 d, R2 s))

MIDFUNC(2,test_b_rr,(R1 d, R1 s))
{
    CLOBBER_TEST;
    d=readreg(d,1);
    s=readreg(s,1);

    raw_test_b_rr(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,test_b_rr,(R1 d, R1 s))


MIDFUNC(2,and_l_ri,(RW4 d, IMM i))
{
        if (isconst(d) && !needflags) {
                live.state[d].val &= i;
                return;
        }

    CLOBBER_AND;
    d=rmw(d,4,4);

    raw_and_l_ri(d,i);
    unlock2(d);
}
MENDFUNC(2,and_l_ri,(RW4 d, IMM i))

MIDFUNC(2,and_l,(RW4 d, R4 s))
{
    CLOBBER_AND;
    s=readreg(s,4);
    d=rmw(d,4,4);

    raw_and_l(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,and_l,(RW4 d, R4 s))

MIDFUNC(2,and_w,(RW2 d, R2 s))
{
    CLOBBER_AND;
    s=readreg(s,2);
    d=rmw(d,2,2);

    raw_and_w(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,and_w,(RW2 d, R2 s))

MIDFUNC(2,and_b,(RW1 d, R1 s))
{
    CLOBBER_AND;
    s=readreg(s,1);
    d=rmw(d,1,1);

    raw_and_b(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,and_b,(RW1 d, R1 s))

// gb-- used for making an fpcr value in compemu_fpp.cpp
MIDFUNC(2,or_l_rm,(RW4 d, IMM s))
{
    CLOBBER_OR;
    d=rmw(d,4,4);
        
    raw_or_l_rm(d,s);
    unlock2(d);
}
MENDFUNC(2,or_l_rm,(RW4 d, IMM s))

MIDFUNC(2,or_l_ri,(RW4 d, IMM i))
{
    if (isconst(d) && !needflags) {
        live.state[d].val|=i;
        return;
    }
    CLOBBER_OR;
    d=rmw(d,4,4);

    raw_or_l_ri(d,i);
    unlock2(d);
}
MENDFUNC(2,or_l_ri,(RW4 d, IMM i))

MIDFUNC(2,or_l,(RW4 d, R4 s))
{
    if (isconst(d) && isconst(s) && !needflags) {
        live.state[d].val|=live.state[s].val;
        return;
    }
    CLOBBER_OR;
    s=readreg(s,4);
    d=rmw(d,4,4);

    raw_or_l(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,or_l,(RW4 d, R4 s))

MIDFUNC(2,or_w,(RW2 d, R2 s))
{
    CLOBBER_OR;
    s=readreg(s,2);
    d=rmw(d,2,2);

    raw_or_w(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,or_w,(RW2 d, R2 s))

MIDFUNC(2,or_b,(RW1 d, R1 s))
{
    CLOBBER_OR;
    s=readreg(s,1);
    d=rmw(d,1,1);

    raw_or_b(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,or_b,(RW1 d, R1 s))

MIDFUNC(2,adc_l,(RW4 d, R4 s))
{
    CLOBBER_ADC;
    s=readreg(s,4);
    d=rmw(d,4,4);

    raw_adc_l(d,s);

    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,adc_l,(RW4 d, R4 s))

MIDFUNC(2,adc_w,(RW2 d, R2 s))
{
    CLOBBER_ADC;
    s=readreg(s,2);
    d=rmw(d,2,2);

    raw_adc_w(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,adc_w,(RW2 d, R2 s))

MIDFUNC(2,adc_b,(RW1 d, R1 s))
{
    CLOBBER_ADC;
    s=readreg(s,1);
    d=rmw(d,1,1);

    raw_adc_b(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,adc_b,(RW1 d, R1 s))

MIDFUNC(2,add_l,(RW4 d, R4 s))
{
    if (isconst(s)) {
        COMPCALL(add_l_ri)(d,live.state[s].val);
        return;
    }

    CLOBBER_ADD;
    s=readreg(s,4);
    d=rmw(d,4,4);

    raw_add_l(d,s);

    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,add_l,(RW4 d, R4 s))

MIDFUNC(2,add_w,(RW2 d, R2 s))
{
    if (isconst(s)) {
        COMPCALL(add_w_ri)(d,(uae_u16)live.state[s].val);
        return;
    }

    CLOBBER_ADD;
    s=readreg(s,2);
    d=rmw(d,2,2);

    raw_add_w(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,add_w,(RW2 d, R2 s))

MIDFUNC(2,add_b,(RW1 d, R1 s))
{
    if (isconst(s)) {
        COMPCALL(add_b_ri)(d,(uae_u8)live.state[s].val);
        return;
    }

    CLOBBER_ADD;
    s=readreg(s,1);
    d=rmw(d,1,1);

    raw_add_b(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,add_b,(RW1 d, R1 s))

MIDFUNC(2,sub_l_ri,(RW4 d, IMM i))
{
    if (!i && !needflags)
        return;
    if (isconst(d) && !needflags) {
        live.state[d].val-=i;
        return;
    }
#if USE_OFFSET 
    if (!needflags) {
        add_offset(d,-i);
        return;
    }
#endif

    CLOBBER_SUB;
    d=rmw(d,4,4);

    raw_sub_l_ri(d,i);
    unlock2(d);
}
MENDFUNC(2,sub_l_ri,(RW4 d, IMM i))

MIDFUNC(2,sub_w_ri,(RW2 d, IMM i))
{
    if (!i && !needflags)
        return;

    CLOBBER_SUB;
    d=rmw(d,2,2);

    raw_sub_w_ri(d,i);
    unlock2(d);
}
MENDFUNC(2,sub_w_ri,(RW2 d, IMM i))

MIDFUNC(2,sub_b_ri,(RW1 d, IMM i))
{
    if (!i && !needflags)
        return;

    CLOBBER_SUB;
    d=rmw(d,1,1);

    raw_sub_b_ri(d,i);

    unlock2(d);
}
MENDFUNC(2,sub_b_ri,(RW1 d, IMM i))

MIDFUNC(2,add_l_ri,(RW4 d, IMM i))
{
    if (!i && !needflags)
        return;
    if (isconst(d) && !needflags) {
        live.state[d].val+=i;
        return;
    }
#if USE_OFFSET 
    if (!needflags) {
        add_offset(d,i);
        return;
    }
#endif
    CLOBBER_ADD;
    d=rmw(d,4,4);
    raw_add_l_ri(d,i);
    unlock2(d);
}
MENDFUNC(2,add_l_ri,(RW4 d, IMM i))

MIDFUNC(2,add_w_ri,(RW2 d, IMM i))
{
    if (!i && !needflags)
        return;

    CLOBBER_ADD;
    d=rmw(d,2,2);

    raw_add_w_ri(d,i);
    unlock2(d);
}
MENDFUNC(2,add_w_ri,(RW2 d, IMM i))

MIDFUNC(2,add_b_ri,(RW1 d, IMM i))
{
    if (!i && !needflags)
        return;

    CLOBBER_ADD;
    d=rmw(d,1,1);

    raw_add_b_ri(d,i);

    unlock2(d);
}
MENDFUNC(2,add_b_ri,(RW1 d, IMM i))

MIDFUNC(2,sbb_l,(RW4 d, R4 s))
{
    CLOBBER_SBB;
    s=readreg(s,4);
    d=rmw(d,4,4);

    raw_sbb_l(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,sbb_l,(RW4 d, R4 s))

MIDFUNC(2,sbb_w,(RW2 d, R2 s))
{
    CLOBBER_SBB;
    s=readreg(s,2);
    d=rmw(d,2,2);

    raw_sbb_w(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,sbb_w,(RW2 d, R2 s))

MIDFUNC(2,sbb_b,(RW1 d, R1 s))
{
    CLOBBER_SBB;
    s=readreg(s,1);
    d=rmw(d,1,1);

    raw_sbb_b(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,sbb_b,(RW1 d, R1 s))

MIDFUNC(2,sub_l,(RW4 d, R4 s))
{
    if (isconst(s)) {
        COMPCALL(sub_l_ri)(d,live.state[s].val);
        return;
    }

    CLOBBER_SUB;
    s=readreg(s,4);
    d=rmw(d,4,4);

    raw_sub_l(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,sub_l,(RW4 d, R4 s))

MIDFUNC(2,sub_w,(RW2 d, R2 s))
{
    if (isconst(s)) {
        COMPCALL(sub_w_ri)(d,(uae_u16)live.state[s].val);
        return;
    }

    CLOBBER_SUB;
    s=readreg(s,2);
    d=rmw(d,2,2);

    raw_sub_w(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,sub_w,(RW2 d, R2 s))

MIDFUNC(2,sub_b,(RW1 d, R1 s))
{
    if (isconst(s)) {
        COMPCALL(sub_b_ri)(d,(uae_u8)live.state[s].val);
        return;
    }

    CLOBBER_SUB;
    s=readreg(s,1);
    d=rmw(d,1,1);

    raw_sub_b(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,sub_b,(RW1 d, R1 s))

MIDFUNC(2,cmp_l,(R4 d, R4 s))
{
    CLOBBER_CMP;
    s=readreg(s,4);
    d=readreg(d,4);

    raw_cmp_l(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,cmp_l,(R4 d, R4 s))

MIDFUNC(2,cmp_l_ri,(R4 r, IMM i))
{
    CLOBBER_CMP;
    r=readreg(r,4);

    raw_cmp_l_ri(r,i);
    unlock2(r);
}
MENDFUNC(2,cmp_l_ri,(R4 r, IMM i))

MIDFUNC(2,cmp_w,(R2 d, R2 s))
{
    CLOBBER_CMP;
    s=readreg(s,2);
    d=readreg(d,2);

    raw_cmp_w(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,cmp_w,(R2 d, R2 s))

MIDFUNC(2,cmp_b,(R1 d, R1 s))
{
    CLOBBER_CMP;
    s=readreg(s,1);
    d=readreg(d,1);

    raw_cmp_b(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,cmp_b,(R1 d, R1 s))


MIDFUNC(2,xor_l,(RW4 d, R4 s))
{
    CLOBBER_XOR;
    s=readreg(s,4);
    d=rmw(d,4,4);

    raw_xor_l(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,xor_l,(RW4 d, R4 s))

MIDFUNC(2,xor_w,(RW2 d, R2 s))
{
    CLOBBER_XOR;
    s=readreg(s,2);
    d=rmw(d,2,2);

    raw_xor_w(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,xor_w,(RW2 d, R2 s))

MIDFUNC(2,xor_b,(RW1 d, R1 s))
{
    CLOBBER_XOR;
    s=readreg(s,1);
    d=rmw(d,1,1);

    raw_xor_b(d,s);
    unlock2(d);
    unlock2(s);
}
MENDFUNC(2,xor_b,(RW1 d, R1 s))

MIDFUNC(5,call_r_11,(W4 out1, R4 r, R4 in1, IMM osize, IMM isize))
{
    clobber_flags();
    remove_all_offsets();
    if (osize==4) {
        if (out1!=in1 && out1!=r) {
            COMPCALL(forget_about)(out1);
        }
    }
    else {
        tomem_c(out1);
    }

    in1=readreg_specific(in1,isize,REG_PAR1);
    r=readreg(r,4);
    prepare_for_call_1();  /* This should ensure that there won't be
                              any need for swapping nregs in prepare_for_call_2
                           */
#if USE_NORMAL_CALLING_CONVENTION
    raw_push_l_r(in1);
#endif
    unlock2(in1);
    unlock2(r);

    prepare_for_call_2();
    raw_call_r(r);

#if USE_NORMAL_CALLING_CONVENTION
    raw_inc_sp(4);
#endif


    live.nat[REG_RESULT].holds[0]=out1;
    live.nat[REG_RESULT].nholds=1;
    live.nat[REG_RESULT].touched=touchcnt++;

    live.state[out1].realreg=REG_RESULT;
    live.state[out1].realind=0;
    live.state[out1].val=0;
    live.state[out1].validsize=osize;
    live.state[out1].dirtysize=osize;
    set_status(out1,DIRTY);
}
MENDFUNC(5,call_r_11,(W4 out1, R4 r, R4 in1, IMM osize, IMM isize))

MIDFUNC(5,call_r_02,(R4 r, R4 in1, R4 in2, IMM isize1, IMM isize2))
{
    clobber_flags();
    remove_all_offsets();
    in1=readreg_specific(in1,isize1,REG_PAR1);
    in2=readreg_specific(in2,isize2,REG_PAR2);
    r=readreg(r,4);
    prepare_for_call_1();  /* This should ensure that there won't be
                              any need for swapping nregs in prepare_for_call_2
                           */
#if USE_NORMAL_CALLING_CONVENTION
    raw_push_l_r(in2);
    raw_push_l_r(in1);
#endif
    unlock2(r);
    unlock2(in1);
    unlock2(in2);
    prepare_for_call_2();
    raw_call_r(r);
#if USE_NORMAL_CALLING_CONVENTION
    raw_inc_sp(8);
#endif
}
MENDFUNC(5,call_r_02,(R4 r, R4 in1, R4 in2, IMM isize1, IMM isize2))

/* forget_about() takes a mid-layer register */
MIDFUNC(1,forget_about,(W4 r))
{
    if (isinreg(r))
        disassociate(r);
    live.state[r].val=0;
    set_status(r,UNDEF);
}
MENDFUNC(1,forget_about,(W4 r))

MIDFUNC(0,nop,(void))
{
    raw_nop();
}
MENDFUNC(0,nop,(void))


MIDFUNC(1,f_forget_about,(FW r))
{
    if (f_isinreg(r))
        f_disassociate(r);
    live.fate[r].status=UNDEF;
}
MENDFUNC(1,f_forget_about,(FW r))

MIDFUNC(1,fmov_pi,(FW r))
{
    r=f_writereg(r);
    raw_fmov_pi(r);
    f_unlock(r);
}
MENDFUNC(1,fmov_pi,(FW r))

MIDFUNC(1,fmov_log10_2,(FW r))
{
    r=f_writereg(r);
    raw_fmov_log10_2(r);
    f_unlock(r);
}
MENDFUNC(1,fmov_log10_2,(FW r))

MIDFUNC(1,fmov_log2_e,(FW r))
{
    r=f_writereg(r);
    raw_fmov_log2_e(r);
    f_unlock(r);
}
MENDFUNC(1,fmov_log2_e,(FW r))

MIDFUNC(1,fmov_loge_2,(FW r))
{
    r=f_writereg(r);
    raw_fmov_loge_2(r);
    f_unlock(r);
}
MENDFUNC(1,fmov_loge_2,(FW r))

MIDFUNC(1,fmov_1,(FW r))
{
    r=f_writereg(r);
    raw_fmov_1(r);
    f_unlock(r);
}
MENDFUNC(1,fmov_1,(FW r))

MIDFUNC(1,fmov_0,(FW r))
{
    r=f_writereg(r);
    raw_fmov_0(r);
    f_unlock(r);
}
MENDFUNC(1,fmov_0,(FW r))

MIDFUNC(2,fmov_rm,(FW r, MEMR m))
{
    r=f_writereg(r);
    raw_fmov_rm(r,m);
    f_unlock(r);
}
MENDFUNC(2,fmov_rm,(FW r, MEMR m))

MIDFUNC(2,fmovi_rm,(FW r, MEMR m))
{
    r=f_writereg(r);
    raw_fmovi_rm(r,m);
    f_unlock(r);
}
MENDFUNC(2,fmovi_rm,(FW r, MEMR m))

MIDFUNC(2,fmovi_mr,(MEMW m, FR r))
{
    r=f_readreg(r);
    raw_fmovi_mr(m,r);
    f_unlock(r);
}
MENDFUNC(2,fmovi_mr,(MEMW m, FR r))

MIDFUNC(2,fmovs_rm,(FW r, MEMR m))
{
    r=f_writereg(r);
    raw_fmovs_rm(r,m);
    f_unlock(r);
}
MENDFUNC(2,fmovs_rm,(FW r, MEMR m))

MIDFUNC(2,fmovs_mr,(MEMW m, FR r))
{
    r=f_readreg(r);
    raw_fmovs_mr(m,r);
    f_unlock(r);
}
MENDFUNC(2,fmovs_mr,(MEMW m, FR r))

MIDFUNC(2,fmov_ext_mr,(MEMW m, FR r))
{
    r=f_readreg(r);
    raw_fmov_ext_mr(m,r);
    f_unlock(r);
}
MENDFUNC(2,fmov_ext_mr,(MEMW m, FR r))

MIDFUNC(2,fmov_mr,(MEMW m, FR r))
{
    r=f_readreg(r);
    raw_fmov_mr(m,r);
    f_unlock(r);
}
MENDFUNC(2,fmov_mr,(MEMW m, FR r))

MIDFUNC(2,fmov_ext_rm,(FW r, MEMR m))
{
    r=f_writereg(r);
    raw_fmov_ext_rm(r,m);
    f_unlock(r);
}
MENDFUNC(2,fmov_ext_rm,(FW r, MEMR m))

MIDFUNC(2,fmov_rr,(FW d, FR s))
{
    if (d==s) { /* How pointless! */
        return;
    }
#if USE_F_ALIAS
    f_disassociate(d);
    s=f_readreg(s);
    live.fate[d].realreg=s;
    live.fate[d].realind=live.fat[s].nholds;
    live.fate[d].status=DIRTY;
    live.fat[s].holds[live.fat[s].nholds]=d;
    live.fat[s].nholds++;
    f_unlock(s);
#else
    s=f_readreg(s);
    d=f_writereg(d);
    raw_fmov_rr(d,s);
    f_unlock(s);
    f_unlock(d);
#endif
}
MENDFUNC(2,fmov_rr,(FW d, FR s))

MIDFUNC(2,fldcw_m_indexed,(R4 index, IMM base))
{
    index=readreg(index,4);

    raw_fldcw_m_indexed(index,base);
    unlock2(index);
}
MENDFUNC(2,fldcw_m_indexed,(R4 index, IMM base))

MIDFUNC(1,ftst_r,(FR r))
{
    r=f_readreg(r);
    raw_ftst_r(r);
    f_unlock(r);
}
MENDFUNC(1,ftst_r,(FR r))

MIDFUNC(0,dont_care_fflags,(void))
{
    f_disassociate(FP_RESULT);
}
MENDFUNC(0,dont_care_fflags,(void))

MIDFUNC(2,fsqrt_rr,(FW d, FR s))
{
    s=f_readreg(s);
    d=f_writereg(d);
    raw_fsqrt_rr(d,s);
    f_unlock(s);
    f_unlock(d);
}
MENDFUNC(2,fsqrt_rr,(FW d, FR s))

MIDFUNC(2,fabs_rr,(FW d, FR s))
{
    s=f_readreg(s);
    d=f_writereg(d);
    raw_fabs_rr(d,s);
    f_unlock(s);
    f_unlock(d);
}
MENDFUNC(2,fabs_rr,(FW d, FR s))

MIDFUNC(2,fsin_rr,(FW d, FR s))
{
    s=f_readreg(s);
    d=f_writereg(d);
    raw_fsin_rr(d,s);
    f_unlock(s);
    f_unlock(d);
}
MENDFUNC(2,fsin_rr,(FW d, FR s))

MIDFUNC(2,fcos_rr,(FW d, FR s))
{
    s=f_readreg(s);
    d=f_writereg(d);
    raw_fcos_rr(d,s);
    f_unlock(s);
    f_unlock(d);
}
MENDFUNC(2,fcos_rr,(FW d, FR s))

MIDFUNC(2,ftwotox_rr,(FW d, FR s))
{
    s=f_readreg(s);
    d=f_writereg(d);
    raw_ftwotox_rr(d,s);
    f_unlock(s);
    f_unlock(d);
}
MENDFUNC(2,ftwotox_rr,(FW d, FR s))

MIDFUNC(2,fetox_rr,(FW d, FR s))
{
    s=f_readreg(s);
    d=f_writereg(d);
    raw_fetox_rr(d,s);
    f_unlock(s);
    f_unlock(d);
}
MENDFUNC(2,fetox_rr,(FW d, FR s))

MIDFUNC(2,frndint_rr,(FW d, FR s))
{
    s=f_readreg(s);
    d=f_writereg(d);
    raw_frndint_rr(d,s);
    f_unlock(s);
    f_unlock(d);
}
MENDFUNC(2,frndint_rr,(FW d, FR s))

MIDFUNC(2,flog2_rr,(FW d, FR s))
{
    s=f_readreg(s);
    d=f_writereg(d);
    raw_flog2_rr(d,s);
    f_unlock(s);
    f_unlock(d);
}
MENDFUNC(2,flog2_rr,(FW d, FR s))

MIDFUNC(2,fneg_rr,(FW d, FR s))
{
    s=f_readreg(s);
    d=f_writereg(d);
    raw_fneg_rr(d,s);
    f_unlock(s);
    f_unlock(d);
}
MENDFUNC(2,fneg_rr,(FW d, FR s))

MIDFUNC(2,fadd_rr,(FRW d, FR s))
{
    s=f_readreg(s);
    d=f_rmw(d);
    raw_fadd_rr(d,s);
    f_unlock(s);
    f_unlock(d);
}
MENDFUNC(2,fadd_rr,(FRW d, FR s))

MIDFUNC(2,fsub_rr,(FRW d, FR s))
{
    s=f_readreg(s);
    d=f_rmw(d);
    raw_fsub_rr(d,s);
    f_unlock(s);
    f_unlock(d);
}
MENDFUNC(2,fsub_rr,(FRW d, FR s))

MIDFUNC(2,fcmp_rr,(FR d, FR s))
{
    d=f_readreg(d);
    s=f_readreg(s);
    raw_fcmp_rr(d,s);
    f_unlock(s);
    f_unlock(d);
}
MENDFUNC(2,fcmp_rr,(FR d, FR s))

MIDFUNC(2,fdiv_rr,(FRW d, FR s))
{
    s=f_readreg(s);
    d=f_rmw(d);
    raw_fdiv_rr(d,s);
    f_unlock(s);
    f_unlock(d);
}
MENDFUNC(2,fdiv_rr,(FRW d, FR s))

MIDFUNC(2,frem_rr,(FRW d, FR s))
{
    s=f_readreg(s);
    d=f_rmw(d);
    raw_frem_rr(d,s);
    f_unlock(s);
    f_unlock(d);
}
MENDFUNC(2,frem_rr,(FRW d, FR s))

MIDFUNC(2,frem1_rr,(FRW d, FR s))
{
    s=f_readreg(s);
    d=f_rmw(d);
    raw_frem1_rr(d,s);
    f_unlock(s);
    f_unlock(d);
}
MENDFUNC(2,frem1_rr,(FRW d, FR s))

MIDFUNC(2,fmul_rr,(FRW d, FR s))
{
    s=f_readreg(s);
    d=f_rmw(d);
    raw_fmul_rr(d,s);
    f_unlock(s);
    f_unlock(d);
}
MENDFUNC(2,fmul_rr,(FRW d, FR s))

/********************************************************************
 * Support functions exposed to gencomp. CREATE time                *
 ********************************************************************/

int kill_rodent(int r)
{
    return KILLTHERAT && 
                have_rat_stall &&
        (live.state[r].status==INMEM || 
         live.state[r].status==CLEAN || 
         live.state[r].status==ISCONST || 
         live.state[r].dirtysize==4);
}

uae_u32 get_const(int r)
{
        Dif (!isconst(r)) {
            write_log("Register %d should be constant, but isn't\n",r);
            abort();
        }
    return live.state[r].val;
}

void sync_m68k_pc(void)
{
    if (m68k_pc_offset) {
        add_l_ri(PC_P,m68k_pc_offset);
        comp_pc_p+=m68k_pc_offset;
        m68k_pc_offset=0;
    }
}
    
/********************************************************************
 * Scratch registers management                                     *
 ********************************************************************/

struct scratch_t {
        uae_u32         regs[VREGS];
        fpu_register    fregs[VFREGS];
};

static scratch_t scratch;

/********************************************************************
 * Support functions exposed to newcpu                              *
 ********************************************************************/

static inline const char *str_on_off(bool b)
{
        return b ? "on" : "off";
}

static __inline__ unsigned int cft_map (unsigned int f)
{
#ifndef HAVE_GET_WORD_UNSWAPPED
    return f;
#else
    return ((f >> 8) & 255) | ((f & 255) << 8);
#endif
}

void compiler_init(void)
{
        static bool initialized = false;
        if (initialized)
                return;
        
#ifndef WIN32
        // Open /dev/zero
        zero_fd = open("/dev/zero", O_RDWR);
        if (zero_fd < 0) {
                char str[200];
                sprintf(str, GetString(STR_NO_DEV_ZERO_ERR), strerror(errno));
                ErrorAlert(str);
                QuitEmulator();
        }
#endif
        
#if JIT_DEBUG
        // JIT debug mode ?
        JITDebug = PrefsFindBool("jitdebug");
#endif
        write_log("<JIT compiler> : enable runtime disassemblers : %s\n", JITDebug ? "yes" : "no");
        
#ifdef USE_JIT_FPU
        // Use JIT compiler for FPU instructions ?
        avoid_fpu = !PrefsFindBool("jitfpu");
#else
        // JIT FPU is always disabled
        avoid_fpu = true;
#endif
        write_log("<JIT compiler> : compile FPU instructions : %s\n", !avoid_fpu ? "yes" : "no");
        
        // Get size of the translation cache (in KB)
        cache_size = PrefsFindInt32("jitcachesize");
        write_log("<JIT compiler> : requested translation cache size : %d KB\n", cache_size);
        
        // Initialize target CPU (check for features, e.g. CMOV, rat stalls)
        raw_init_cpu();
        setzflg_uses_bsf = target_check_bsf();
        write_log("<JIT compiler> : target processor has CMOV instructions : %s\n", have_cmov ? "yes" : "no");
        write_log("<JIT compiler> : target processor can suffer from partial register stalls : %s\n", have_rat_stall ? "yes" : "no");
        write_log("<JIT compiler> : alignment for loops, jumps are %d, %d\n", align_loops, align_jumps);
        
        // Translation cache flush mechanism
        lazy_flush = PrefsFindBool("jitlazyflush");
        write_log("<JIT compiler> : lazy translation cache invalidation : %s\n", str_on_off(lazy_flush));
        flush_icache = lazy_flush ? flush_icache_lazy : flush_icache_hard;
        
        // Compiler features
        write_log("<JIT compiler> : register aliasing : %s\n", str_on_off(1));
        write_log("<JIT compiler> : FP register aliasing : %s\n", str_on_off(USE_F_ALIAS));
        write_log("<JIT compiler> : lazy constant offsetting : %s\n", str_on_off(USE_OFFSET));
        write_log("<JIT compiler> : block inlining : %s\n", str_on_off(USE_INLINING));
        write_log("<JIT compiler> : separate blockinfo allocation : %s\n", str_on_off(USE_SEPARATE_BIA));
        
        // Build compiler tables
        build_comp();
        
        initialized = true;
        
#if PROFILE_UNTRANSLATED_INSNS
        write_log("<JIT compiler> : gather statistics on untranslated insns count\n");
#endif

#if PROFILE_COMPILE_TIME
        write_log("<JIT compiler> : gather statistics on translation time\n");
        emul_start_time = clock();
#endif
}

void compiler_exit(void)
{
#if PROFILE_COMPILE_TIME
        emul_end_time = clock();
#endif
        
        // Deallocate translation cache
        if (compiled_code) {
                vm_release(compiled_code, cache_size * 1024);
                compiled_code = 0;
        }
        
#ifndef WIN32
        // Close /dev/zero
        if (zero_fd > 0)
                close(zero_fd);
#endif
        
#if PROFILE_COMPILE_TIME
        write_log("### Compile Block statistics\n");
        write_log("Number of calls to compile_block : %d\n", compile_count);
        uae_u32 emul_time = emul_end_time - emul_start_time;
        write_log("Total emulation time   : %.1f sec\n", double(emul_time)/double(CLOCKS_PER_SEC));
        write_log("Total compilation time : %.1f sec (%.1f%%)\n", double(compile_time)/double(CLOCKS_PER_SEC),
                100.0*double(compile_time)/double(emul_time));
        write_log("\n");
#endif

#if PROFILE_UNTRANSLATED_INSNS
        uae_u64 untranslated_count = 0;
        for (int i = 0; i < 65536; i++) {
                opcode_nums[i] = i;
                untranslated_count += raw_cputbl_count[i];
        }
        write_log("Sorting out untranslated instructions count...\n");
        qsort(opcode_nums, 65536, sizeof(uae_u16), untranslated_compfn);
        write_log("\nRank  Opc      Count Name\n");
        for (int i = 0; i < untranslated_top_ten; i++) {
                uae_u32 count = raw_cputbl_count[opcode_nums[i]];
                struct instr *dp;
                struct mnemolookup *lookup;
                if (!count)
                        break;
                dp = table68k + opcode_nums[i];
                for (lookup = lookuptab; lookup->mnemo != dp->mnemo; lookup++)
                        ;
                write_log("%03d: %04x %10lu %s\n", i, opcode_nums[i], count, lookup->name);
        }
#endif
}

bool compiler_use_jit(void)
{
        // Check for the "jit" prefs item
        if (!PrefsFindBool("jit"))
                return false;
        
        // Don't use JIT if translation cache size is less then MIN_CACHE_SIZE KB
        if (PrefsFindInt32("jitcachesize") < MIN_CACHE_SIZE) {
                write_log("<JIT compiler> : translation cache size is less than %d KB. Disabling JIT.\n", MIN_CACHE_SIZE);
                return false;
        }
        
        // FIXME: there are currently problems with JIT compilation and anything below a 68040
        if (CPUType < 4) {
                write_log("<JIT compiler> : 68040 emulation is required instead of 680%d0. Disabling JIT.\n", CPUType);
                return false;
        }

        return true;
}

void init_comp(void)
{
    int i;
    uae_s8* cb=can_byte;
    uae_s8* cw=can_word;
    uae_s8* au=always_used;

    for (i=0;i<VREGS;i++) {
        live.state[i].realreg=-1;
        live.state[i].needflush=NF_SCRATCH;
        live.state[i].val=0;
        set_status(i,UNDEF);
    }

    for (i=0;i<VFREGS;i++) {
        live.fate[i].status=UNDEF;
        live.fate[i].realreg=-1;
        live.fate[i].needflush=NF_SCRATCH;
    }

    for (i=0;i<VREGS;i++) {
        if (i<16) { /* First 16 registers map to 68k registers */
            live.state[i].mem=((uae_u32*)&regs)+i;
            live.state[i].needflush=NF_TOMEM;
            set_status(i,INMEM);
        }
        else
            live.state[i].mem=scratch.regs+i;
    }
    live.state[PC_P].mem=(uae_u32*)&(regs.pc_p);
    live.state[PC_P].needflush=NF_TOMEM;
    set_const(PC_P,(uae_u32)comp_pc_p);

    live.state[FLAGX].mem=&(regflags.x);
    live.state[FLAGX].needflush=NF_TOMEM;
    set_status(FLAGX,INMEM);
        
    live.state[FLAGTMP].mem=&(regflags.cznv);
    live.state[FLAGTMP].needflush=NF_TOMEM;
    set_status(FLAGTMP,INMEM);

    live.state[NEXT_HANDLER].needflush=NF_HANDLER;
    set_status(NEXT_HANDLER,UNDEF);

    for (i=0;i<VFREGS;i++) {
        if (i<8) { /* First 8 registers map to 68k FPU registers */
            live.fate[i].mem=(uae_u32*)fpu_register_address(i);
            live.fate[i].needflush=NF_TOMEM;
            live.fate[i].status=INMEM;
        }
        else if (i==FP_RESULT) {
            live.fate[i].mem=(uae_u32*)(&fpu.result);
            live.fate[i].needflush=NF_TOMEM;
            live.fate[i].status=INMEM;
        }
        else
            live.fate[i].mem=(uae_u32*)(scratch.fregs+i);
    }


    for (i=0;i<N_REGS;i++) {
        live.nat[i].touched=0;
        live.nat[i].nholds=0;
        live.nat[i].locked=0;
        if (*cb==i) {
            live.nat[i].canbyte=1; cb++;
        } else live.nat[i].canbyte=0;
        if (*cw==i) {
            live.nat[i].canword=1; cw++;
        } else live.nat[i].canword=0;
        if (*au==i) {
            live.nat[i].locked=1; au++;
        }
    }

    for (i=0;i<N_FREGS;i++) {
        live.fat[i].touched=0;
        live.fat[i].nholds=0;
        live.fat[i].locked=0;
    }
    
    touchcnt=1;
    m68k_pc_offset=0;
    live.flags_in_flags=TRASH;
    live.flags_on_stack=VALID;
    live.flags_are_important=1;

    raw_fp_init();
}

/* Only do this if you really mean it! The next call should be to init!*/
void flush(int save_regs)
{
    int fi,i;
    
        log_flush();
    flush_flags(); /* low level */
    sync_m68k_pc(); /* mid level */

    if (save_regs) {
        for (i=0;i<VFREGS;i++) {
            if (live.fate[i].needflush==NF_SCRATCH || 
                live.fate[i].status==CLEAN) {
                f_disassociate(i);
            }
        }
        for (i=0;i<VREGS;i++) {
            if (live.state[i].needflush==NF_TOMEM) {
                switch(live.state[i].status) {
                 case INMEM:   
                    if (live.state[i].val) {
                        raw_add_l_mi((uae_u32)live.state[i].mem,live.state[i].val);
                        log_vwrite(i);
                        live.state[i].val=0;
                    }
                    break;
                 case CLEAN:   
                 case DIRTY:   
                    remove_offset(i,-1); tomem(i); break;
                 case ISCONST: 
                    if (i!=PC_P) 
                        writeback_const(i); 
                    break;
                 default: break;
                }
                Dif (live.state[i].val && i!=PC_P) {
                    write_log("Register %d still has val %x\n",
                           i,live.state[i].val);
                }
            }
        }
        for (i=0;i<VFREGS;i++) {
            if (live.fate[i].needflush==NF_TOMEM && 
                live.fate[i].status==DIRTY) {
                f_evict(i);
            }
        }
        raw_fp_cleanup_drop();
    }
    if (needflags) {
        write_log("Warning! flush with needflags=1!\n");
    }
}

static void flush_keepflags(void)
{
    int fi,i;
    
    for (i=0;i<VFREGS;i++) {
        if (live.fate[i].needflush==NF_SCRATCH || 
            live.fate[i].status==CLEAN) {
            f_disassociate(i);
        }
    }
    for (i=0;i<VREGS;i++) {
        if (live.state[i].needflush==NF_TOMEM) {
            switch(live.state[i].status) {
             case INMEM:   
                /* Can't adjust the offset here --- that needs "add" */
                break;
             case CLEAN:   
             case DIRTY:   
                remove_offset(i,-1); tomem(i); break;
             case ISCONST: 
                if (i!=PC_P) 
                    writeback_const(i); 
                break;
             default: break;
            }
        }
    }
    for (i=0;i<VFREGS;i++) {
        if (live.fate[i].needflush==NF_TOMEM && 
            live.fate[i].status==DIRTY) {
            f_evict(i);
        }
    }
    raw_fp_cleanup_drop();
}

void freescratch(void)
{
    int i;
    for (i=0;i<N_REGS;i++)
        if (live.nat[i].locked && i!=4)
            write_log("Warning! %d is locked\n",i);

    for (i=0;i<VREGS;i++)
        if (live.state[i].needflush==NF_SCRATCH) {
            forget_about(i);
        }

    for (i=0;i<VFREGS;i++)
        if (live.fate[i].needflush==NF_SCRATCH) {
            f_forget_about(i);
        }
}

/********************************************************************
 * Support functions, internal                                      *
 ********************************************************************/


static void align_target(uae_u32 a)
{
        if (!a)
                return;

        if (tune_nop_fillers)
                raw_emit_nop_filler(a - (((uae_u32)target) & (a - 1)));
        else {
                /* Fill with NOPs --- makes debugging with gdb easier */
                while ((uae_u32)target&(a-1)) 
                        *target++=0x90;
        }
}

static __inline__ int isinrom(uintptr addr)
{
        return ((addr >= (uintptr)ROMBaseHost) && (addr < (uintptr)ROMBaseHost + ROMSize));
}

static void flush_all(void)
{
    int i;

        log_flush();
    for (i=0;i<VREGS;i++)
        if (live.state[i].status==DIRTY) {
            if (!call_saved[live.state[i].realreg]) {
                tomem(i);
            }
        }
    for (i=0;i<VFREGS;i++)
        if (f_isinreg(i)) 
            f_evict(i);
    raw_fp_cleanup_drop();
}

/* Make sure all registers that will get clobbered by a call are
   save and sound in memory */
static void prepare_for_call_1(void)
{
    flush_all();  /* If there are registers that don't get clobbered,
                   * we should be a bit more selective here */
}

/* We will call a C routine in a moment. That will clobber all registers,
   so we need to disassociate everything */
static void prepare_for_call_2(void)
{
    int i;
    for (i=0;i<N_REGS;i++)   
        if (!call_saved[i] && live.nat[i].nholds>0)
            free_nreg(i);

    for (i=0;i<N_FREGS;i++)   
        if (live.fat[i].nholds>0)
            f_free_nreg(i);

    live.flags_in_flags=TRASH;  /* Note: We assume we already rescued the
                                   flags at the very start of the call_r
                                   functions! */
}

/********************************************************************
 * Memory access and related functions, CREATE time                 *
 ********************************************************************/

void register_branch(uae_u32 not_taken, uae_u32 taken, uae_u8 cond)
{
    next_pc_p=not_taken;
    taken_pc_p=taken;
    branch_cc=cond;
}


static uae_u32 get_handler_address(uae_u32 addr)
{
    uae_u32 cl=cacheline(addr);
    blockinfo* bi=get_blockinfo_addr_new((void*)addr,0);
    return (uae_u32)&(bi->direct_handler_to_use);
}

static uae_u32 get_handler(uae_u32 addr)
{
    uae_u32 cl=cacheline(addr);
    blockinfo* bi=get_blockinfo_addr_new((void*)addr,0);
    return (uae_u32)bi->direct_handler_to_use;
}

static void load_handler(int reg, uae_u32 addr)
{
    mov_l_rm(reg,get_handler_address(addr));
}

/* This version assumes that it is writing *real* memory, and *will* fail
 *  if that assumption is wrong! No branches, no second chances, just
 *  straight go-for-it attitude */

static void writemem_real(int address, int source, int offset, int size, int tmp, int clobber)
{
    int f=tmp;

        if (clobber)
            f=source;
        switch(size) {
         case 1: mov_b_bRr(address,source,MEMBaseDiff); break; 
         case 2: mov_w_rr(f,source); bswap_16(f); mov_w_bRr(address,f,MEMBaseDiff); break;
         case 4: mov_l_rr(f,source); bswap_32(f); mov_l_bRr(address,f,MEMBaseDiff); break;
        }
        forget_about(tmp);
        forget_about(f);
}

void writebyte(int address, int source, int tmp)
{
        writemem_real(address,source,20,1,tmp,0);
}

static __inline__ void writeword_general(int address, int source, int tmp,
                                         int clobber)
{
        writemem_real(address,source,16,2,tmp,clobber);
}

void writeword_clobber(int address, int source, int tmp)
{
    writeword_general(address,source,tmp,1);
}

void writeword(int address, int source, int tmp)
{
    writeword_general(address,source,tmp,0);
}

static __inline__ void writelong_general(int address, int source, int tmp, 
                                         int clobber)
{
        writemem_real(address,source,12,4,tmp,clobber);
}

void writelong_clobber(int address, int source, int tmp)
{
    writelong_general(address,source,tmp,1);
}

void writelong(int address, int source, int tmp)
{
    writelong_general(address,source,tmp,0);
}


/* This version assumes that it is reading *real* memory, and *will* fail
 *  if that assumption is wrong! No branches, no second chances, just
 *  straight go-for-it attitude */

static void readmem_real(int address, int dest, int offset, int size, int tmp)
{
    int f=tmp; 

    if (size==4 && address!=dest)
        f=dest;

        switch(size) {
         case 1: mov_b_brR(dest,address,MEMBaseDiff); break; 
         case 2: mov_w_brR(dest,address,MEMBaseDiff); bswap_16(dest); break;
         case 4: mov_l_brR(dest,address,MEMBaseDiff); bswap_32(dest); break;
        }
        forget_about(tmp);
}

void readbyte(int address, int dest, int tmp)
{
        readmem_real(address,dest,8,1,tmp);
}

void readword(int address, int dest, int tmp)
{
        readmem_real(address,dest,4,2,tmp);
}

void readlong(int address, int dest, int tmp)
{
        readmem_real(address,dest,0,4,tmp);
}

void get_n_addr(int address, int dest, int tmp)
{
        // a is the register containing the virtual address
        // after the offset had been fetched
        int a=tmp;
        
        // f is the register that will contain the offset
        int f=tmp;
        
        // a == f == tmp if (address == dest)
        if (address!=dest) {
        a=address;
        f=dest;
        }

#if REAL_ADDRESSING
        mov_l_rr(dest, address);
#elif DIRECT_ADDRESSING
        lea_l_brr(dest,address,MEMBaseDiff);
#endif
        forget_about(tmp);
}

void get_n_addr_jmp(int address, int dest, int tmp)
{
        /* For this, we need to get the same address as the rest of UAE
         would --- otherwise we end up translating everything twice */
    get_n_addr(address,dest,tmp);
}


/* base is a register, but dp is an actual value. 
   target is a register, as is tmp */
void calc_disp_ea_020(int base, uae_u32 dp, int target, int tmp)
{
    int reg = (dp >> 12) & 15;
    int regd_shift=(dp >> 9) & 3;

    if (dp & 0x100) {
        int ignorebase=(dp&0x80);
        int ignorereg=(dp&0x40);
        int addbase=0;
        int outer=0;
    
        if ((dp & 0x30) == 0x20) addbase = (uae_s32)(uae_s16)comp_get_iword((m68k_pc_offset+=2)-2);
        if ((dp & 0x30) == 0x30) addbase = comp_get_ilong((m68k_pc_offset+=4)-4);

        if ((dp & 0x3) == 0x2) outer = (uae_s32)(uae_s16)comp_get_iword((m68k_pc_offset+=2)-2);
        if ((dp & 0x3) == 0x3) outer = comp_get_ilong((m68k_pc_offset+=4)-4);

        if ((dp & 0x4) == 0) {  /* add regd *before* the get_long */
            if (!ignorereg) {
                if ((dp & 0x800) == 0) 
                    sign_extend_16_rr(target,reg);
                else
                    mov_l_rr(target,reg);
                shll_l_ri(target,regd_shift);
            }
            else
                mov_l_ri(target,0);

            /* target is now regd */
            if (!ignorebase)
                add_l(target,base);
            add_l_ri(target,addbase);
            if (dp&0x03) readlong(target,target,tmp);
        } else { /* do the getlong first, then add regd */
            if (!ignorebase) {
                mov_l_rr(target,base);
                add_l_ri(target,addbase);
            }
            else
                mov_l_ri(target,addbase);
            if (dp&0x03) readlong(target,target,tmp);

            if (!ignorereg) {
                if ((dp & 0x800) == 0) 
                    sign_extend_16_rr(tmp,reg);
                else
                    mov_l_rr(tmp,reg);
                shll_l_ri(tmp,regd_shift);
                /* tmp is now regd */
                add_l(target,tmp);
            }
        }
        add_l_ri(target,outer);
    }
    else { /* 68000 version */
        if ((dp & 0x800) == 0) { /* Sign extend */
            sign_extend_16_rr(target,reg);
            lea_l_brr_indexed(target,base,target,1<<regd_shift,(uae_s32)((uae_s8)dp));
        }
        else {
            lea_l_brr_indexed(target,base,reg,1<<regd_shift,(uae_s32)((uae_s8)dp));
        }
    }
    forget_about(tmp);
}


void set_cache_state(int enabled)
{
    if (enabled!=letit)
        flush_icache_hard(77);
    letit=enabled;
}

int get_cache_state(void)
{
    return letit;
}

uae_u32 get_jitted_size(void)
{
    if (compiled_code)
        return current_compile_p-compiled_code;
    return 0;
}

void alloc_cache(void)
{
        if (compiled_code) {
                flush_icache_hard(6);
                vm_release(compiled_code, cache_size * 1024);
                compiled_code = 0;
        }
        
        if (cache_size == 0)
                return;
        
        while (!compiled_code && cache_size) {
                if ((compiled_code = (uae_u8 *)vm_acquire(cache_size * 1024)) == VM_MAP_FAILED) {
                        compiled_code = 0;
                        cache_size /= 2;
                }
        }
        vm_protect(compiled_code, cache_size, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE);
        
        if (compiled_code) {
                write_log("<JIT compiler> : actual translation cache size : %d KB at 0x%08X\n", cache_size, compiled_code);
                max_compile_start = compiled_code + cache_size*1024 - BYTES_PER_INST;
                current_compile_p = compiled_code;
                current_cache_size = 0;
        }
}


extern void op_illg_1 (uae_u32 opcode) REGPARAM;

static void calc_checksum(blockinfo* bi, uae_u32* c1, uae_u32* c2)
{
    uae_u32 k1 = 0;
    uae_u32 k2 = 0;

#if USE_CHECKSUM_INFO
    checksum_info *csi = bi->csi;
        Dif(!csi) abort();
        while (csi) {
                uae_s32 len = csi->length;
                uae_u32 tmp = (uae_u32)csi->start_p;
#else
                uae_s32 len = bi->len;
                uae_u32 tmp = (uae_u32)bi->min_pcp;
#endif
                uae_u32*pos;

                len += (tmp & 3);
                tmp &= ~3;
                pos = (uae_u32 *)tmp;

                if (len >= 0 && len <= MAX_CHECKSUM_LEN) {
                        while (len > 0) {
                                k1 += *pos;
                                k2 ^= *pos;
                                pos++;
                                len -= 4;
                        }
                }

#if USE_CHECKSUM_INFO
                csi = csi->next;
        }
#endif

        *c1 = k1;
        *c2 = k2;
}

#if 0
static void show_checksum(CSI_TYPE* csi)
{
    uae_u32 k1=0;
    uae_u32 k2=0;
    uae_s32 len=CSI_LENGTH(csi);
    uae_u32 tmp=(uae_u32)CSI_START_P(csi);
    uae_u32* pos;

    len+=(tmp&3);
    tmp&=(~3);
    pos=(uae_u32*)tmp;

    if (len<0 || len>MAX_CHECKSUM_LEN) {
        return;
    }
    else {
        while (len>0) {
            write_log("%08x ",*pos);
            pos++;
            len-=4;
        }
        write_log(" bla\n");
    }
}
#endif


int check_for_cache_miss(void)
{
    blockinfo* bi=get_blockinfo_addr(regs.pc_p);
    
    if (bi) {
        int cl=cacheline(regs.pc_p);
        if (bi!=cache_tags[cl+1].bi) {
            raise_in_cl_list(bi);
            return 1;
        }
    }
    return 0;
}

    
static void recompile_block(void)
{
    /* An existing block's countdown code has expired. We need to make
       sure that execute_normal doesn't refuse to recompile due to a
       perceived cache miss... */
    blockinfo*  bi=get_blockinfo_addr(regs.pc_p);

    Dif (!bi) 
        abort();
    raise_in_cl_list(bi);
    execute_normal();
    return;
}
static void cache_miss(void)
{
    blockinfo*  bi=get_blockinfo_addr(regs.pc_p);
    uae_u32     cl=cacheline(regs.pc_p);
    blockinfo*  bi2=get_blockinfo(cl);

    if (!bi) {
        execute_normal(); /* Compile this block now */
        return;
    }
    Dif (!bi2 || bi==bi2) {
        write_log("Unexplained cache miss %p %p\n",bi,bi2);
        abort();
    }
    raise_in_cl_list(bi);
    return;
}

static int called_check_checksum(blockinfo* bi);

static inline int block_check_checksum(blockinfo* bi) 
{
    uae_u32     c1,c2;
    bool        isgood;
    
    if (bi->status!=BI_NEED_CHECK)
        return 1;  /* This block is in a checked state */
    
    checksum_count++;

    if (bi->c1 || bi->c2)
        calc_checksum(bi,&c1,&c2);
    else {
        c1=c2=1;  /* Make sure it doesn't match */
        }
    
    isgood=(c1==bi->c1 && c2==bi->c2);

    if (isgood) { 
        /* This block is still OK. So we reactivate. Of course, that
           means we have to move it into the needs-to-be-flushed list */
        bi->handler_to_use=bi->handler;
        set_dhtu(bi,bi->direct_handler);
        bi->status=BI_CHECKING;
        isgood=called_check_checksum(bi);
    }
    if (isgood) {
        /*      write_log("reactivate %p/%p (%x %x/%x %x)\n",bi,bi->pc_p,
                c1,c2,bi->c1,bi->c2);*/
        remove_from_list(bi);
        add_to_active(bi);
        raise_in_cl_list(bi);
        bi->status=BI_ACTIVE;
    }
    else {
        /* This block actually changed. We need to invalidate it,
           and set it up to be recompiled */
        /* write_log("discard %p/%p (%x %x/%x %x)\n",bi,bi->pc_p,
           c1,c2,bi->c1,bi->c2); */
        invalidate_block(bi);
        raise_in_cl_list(bi);
    }
    return isgood;
}

static int called_check_checksum(blockinfo* bi) 
{
    dependency* x=bi->deplist;
    int isgood=1;
    int i;
    
    for (i=0;i<2 && isgood;i++) {
        if (bi->dep[i].jmp_off) {
            isgood=block_check_checksum(bi->dep[i].target);
        }
    }
    return isgood;
}

static void check_checksum(void) 
{
    blockinfo*  bi=get_blockinfo_addr(regs.pc_p);
    uae_u32     cl=cacheline(regs.pc_p);
    blockinfo*  bi2=get_blockinfo(cl);

    /* These are not the droids you are looking for...  */
    if (!bi) {
        /* Whoever is the primary target is in a dormant state, but
           calling it was accidental, and we should just compile this
           new block */
        execute_normal();
        return;
    }
    if (bi!=bi2) {
        /* The block was hit accidentally, but it does exist. Cache miss */
        cache_miss();
        return;
    }

    if (!block_check_checksum(bi))
        execute_normal();
}

static __inline__ void match_states(blockinfo* bi)
{
    int i;
    smallstate* s=&(bi->env);
    
    if (bi->status==BI_NEED_CHECK) {
        block_check_checksum(bi);
    }
    if (bi->status==BI_ACTIVE || 
        bi->status==BI_FINALIZING) {  /* Deal with the *promises* the 
                                         block makes (about not using 
                                         certain vregs) */
        for (i=0;i<16;i++) {
            if (s->virt[i]==L_UNNEEDED) {
                // write_log("unneeded reg %d at %p\n",i,target);
                COMPCALL(forget_about)(i); // FIXME
            }
        }
    }
    flush(1);

    /* And now deal with the *demands* the block makes */
    for (i=0;i<N_REGS;i++) {
        int v=s->nat[i];
        if (v>=0) {
            // printf("Loading reg %d into %d at %p\n",v,i,target);
            readreg_specific(v,4,i);
            // do_load_reg(i,v);
            // setlock(i);
        }
    }
    for (i=0;i<N_REGS;i++) {
        int v=s->nat[i];
        if (v>=0) {
            unlock2(i);
        }
    }
}

static uae_u8 popallspace[1024]; /* That should be enough space */

static __inline__ void create_popalls(void)
{
  int i,r;

  current_compile_p=popallspace;
  set_target(current_compile_p);
#if USE_PUSH_POP
  /* If we can't use gcc inline assembly, we need to pop some
     registers before jumping back to the various get-out routines.
     This generates the code for it.
  */
  align_target(align_jumps);
  popall_do_nothing=get_target();
  for (i=0;i<N_REGS;i++) {
      if (need_to_preserve[i])
          raw_pop_l_r(i);
  }
  raw_jmp((uae_u32)do_nothing);
  
  align_target(align_jumps);
  popall_execute_normal=get_target();
  for (i=0;i<N_REGS;i++) {
      if (need_to_preserve[i])
          raw_pop_l_r(i);
  }
  raw_jmp((uae_u32)execute_normal);

  align_target(align_jumps);
  popall_cache_miss=get_target();
  for (i=0;i<N_REGS;i++) {
      if (need_to_preserve[i])
          raw_pop_l_r(i);
  }
  raw_jmp((uae_u32)cache_miss);

  align_target(align_jumps);
  popall_recompile_block=get_target();
  for (i=0;i<N_REGS;i++) {
      if (need_to_preserve[i])
          raw_pop_l_r(i);
  }
  raw_jmp((uae_u32)recompile_block);

  align_target(align_jumps);
  popall_exec_nostats=get_target();
  for (i=0;i<N_REGS;i++) {
      if (need_to_preserve[i])
          raw_pop_l_r(i);
  }
  raw_jmp((uae_u32)exec_nostats);

  align_target(align_jumps);
  popall_check_checksum=get_target();
  for (i=0;i<N_REGS;i++) {
      if (need_to_preserve[i])
          raw_pop_l_r(i);
  }
  raw_jmp((uae_u32)check_checksum);

  align_target(align_jumps);
  current_compile_p=get_target();
#else
  popall_exec_nostats=(void *)exec_nostats;
  popall_execute_normal=(void *)execute_normal;
  popall_cache_miss=(void *)cache_miss;
  popall_recompile_block=(void *)recompile_block;
  popall_do_nothing=(void *)do_nothing;
  popall_check_checksum=(void *)check_checksum;
#endif

  /* And now, the code to do the matching pushes and then jump
     into a handler routine */
  pushall_call_handler=get_target();
#if USE_PUSH_POP
  for (i=N_REGS;i--;) {
      if (need_to_preserve[i])
          raw_push_l_r(i);
  }
#endif
  r=REG_PC_TMP;
  raw_mov_l_rm(r,(uae_u32)&regs.pc_p);
  raw_and_l_ri(r,TAGMASK);
  raw_jmp_m_indexed((uae_u32)cache_tags,r,4);

#ifdef X86_ASSEMBLY
  align_target(align_jumps);
  m68k_compile_execute = (void (*)(void))get_target();
  for (i=N_REGS;i--;) {
          if (need_to_preserve[i])
                  raw_push_l_r(i);
  }
  align_target(align_loops);
  uae_u32 dispatch_loop = (uae_u32)get_target();
  r=REG_PC_TMP;
  raw_mov_l_rm(r,(uae_u32)&regs.pc_p);
  raw_and_l_ri(r,TAGMASK);
  raw_call_m_indexed((uae_u32)cache_tags,r,4);
  raw_cmp_l_mi((uae_u32)&regs.spcflags,0);
  raw_jcc_b_oponly(NATIVE_CC_EQ);
  emit_byte(dispatch_loop-((uae_u32)get_target()+1));
  raw_call((uae_u32)m68k_do_specialties);
  raw_test_l_rr(REG_RESULT,REG_RESULT);
  raw_jcc_b_oponly(NATIVE_CC_EQ);
  emit_byte(dispatch_loop-((uae_u32)get_target()+1));
  raw_cmp_b_mi((uae_u32)&quit_program,0);
  raw_jcc_b_oponly(NATIVE_CC_EQ);
  emit_byte(dispatch_loop-((uae_u32)get_target()+1));
  for (i=0;i<N_REGS;i++) {
          if (need_to_preserve[i])
                  raw_pop_l_r(i);
  }
  raw_ret();
#endif
}

static __inline__ void reset_lists(void)
{
    int i;
    
    for (i=0;i<MAX_HOLD_BI;i++)
        hold_bi[i]=NULL;
    active=NULL;
    dormant=NULL;
}

static void prepare_block(blockinfo* bi)
{
    int i;

    set_target(current_compile_p);
    align_target(align_jumps);
    bi->direct_pen=(cpuop_func *)get_target();
    raw_mov_l_rm(0,(uae_u32)&(bi->pc_p));
    raw_mov_l_mr((uae_u32)&regs.pc_p,0);
    raw_jmp((uae_u32)popall_execute_normal);

    align_target(align_jumps);
    bi->direct_pcc=(cpuop_func *)get_target();
    raw_mov_l_rm(0,(uae_u32)&(bi->pc_p));
    raw_mov_l_mr((uae_u32)&regs.pc_p,0);
    raw_jmp((uae_u32)popall_check_checksum);
    current_compile_p=get_target();

    bi->deplist=NULL;
    for (i=0;i<2;i++) {
        bi->dep[i].prev_p=NULL;
        bi->dep[i].next=NULL;
    }
    bi->env=default_ss;
    bi->status=BI_INVALID;
    bi->havestate=0;
    //bi->env=empty_ss;
}

void build_comp(void) 
{
        int i;
    int jumpcount=0;
    unsigned long opcode;
    struct comptbl* tbl=op_smalltbl_0_comp_ff;
    struct comptbl* nftbl=op_smalltbl_0_comp_nf;
    int count;
        int cpu_level = 0;                      // 68000 (default)
        if (CPUType == 4)
                cpu_level = 4;                  // 68040 with FPU
        else {
                if (FPUType)
                        cpu_level = 3;          // 68020 with FPU
                else if (CPUType >= 2)
                        cpu_level = 2;          // 68020
                else if (CPUType == 1)
                        cpu_level = 1;
        }
    struct cputbl *nfctbl = (
                                   cpu_level == 4 ? op_smalltbl_0_nf
                             : cpu_level == 3 ? op_smalltbl_1_nf
                             : cpu_level == 2 ? op_smalltbl_2_nf
                             : cpu_level == 1 ? op_smalltbl_3_nf
                             : op_smalltbl_4_nf);

    write_log ("<JIT compiler> : building compiler function tables\n");
        
        for (opcode = 0; opcode < 65536; opcode++) {
                nfcpufunctbl[opcode] = op_illg_1;
                compfunctbl[opcode] = NULL;
                nfcompfunctbl[opcode] = NULL;
                prop[opcode].use_flags = 0x1f;
                prop[opcode].set_flags = 0x1f;
                prop[opcode].cflow = fl_trap; // ILLEGAL instructions do trap
        }
        
        for (i = 0; tbl[i].opcode < 65536; i++) {
                int cflow = table68k[tbl[i].opcode].cflow;
                if (USE_INLINING && ((cflow & fl_const_jump) != 0))
                        cflow = fl_const_jump;
                else
                        cflow &= ~fl_const_jump;
                prop[cft_map(tbl[i].opcode)].cflow = cflow;

                int uses_fpu = tbl[i].specific & 32;
                int uses_setzflg = tbl[i].specific & 64;
                if ((uses_fpu && avoid_fpu) || (uses_setzflg && !setzflg_uses_bsf))
                        compfunctbl[cft_map(tbl[i].opcode)] = NULL;
                else
                        compfunctbl[cft_map(tbl[i].opcode)] = tbl[i].handler;
        }

    for (i = 0; nftbl[i].opcode < 65536; i++) {
                int uses_fpu = tbl[i].specific & 32;
                int uses_setzflg = tbl[i].specific & 64;
                if ((uses_fpu && avoid_fpu) || (uses_setzflg && !setzflg_uses_bsf))
                        nfcompfunctbl[cft_map(nftbl[i].opcode)] = NULL;
                else
                        nfcompfunctbl[cft_map(nftbl[i].opcode)] = nftbl[i].handler;
                
                nfcpufunctbl[cft_map(nftbl[i].opcode)] = nfctbl[i].handler;
    }

        for (i = 0; nfctbl[i].handler; i++) {
                nfcpufunctbl[cft_map(nfctbl[i].opcode)] = nfctbl[i].handler;
        }

    for (opcode = 0; opcode < 65536; opcode++) {
                compop_func *f;
                compop_func *nff;
                cpuop_func *nfcf;
                int isaddx,cflow;

                if (table68k[opcode].mnemo == i_ILLG || table68k[opcode].clev > cpu_level)
                        continue;

                if (table68k[opcode].handler != -1) {
                        f = compfunctbl[cft_map(table68k[opcode].handler)];
                        nff = nfcompfunctbl[cft_map(table68k[opcode].handler)];
                        nfcf = nfcpufunctbl[cft_map(table68k[opcode].handler)];
                        cflow = prop[cft_map(table68k[opcode].handler)].cflow;
                        isaddx = prop[cft_map(table68k[opcode].handler)].is_addx;
                        prop[cft_map(opcode)].cflow = cflow;
                        prop[cft_map(opcode)].is_addx = isaddx;
                        compfunctbl[cft_map(opcode)] = f;
                        nfcompfunctbl[cft_map(opcode)] = nff;
                        Dif (nfcf == op_illg_1)
                        abort();
                        nfcpufunctbl[cft_map(opcode)] = nfcf;
                }
                prop[cft_map(opcode)].set_flags = table68k[opcode].flagdead;
                prop[cft_map(opcode)].use_flags = table68k[opcode].flaglive;
    }
        for (i = 0; nfctbl[i].handler != NULL; i++) {
                if (nfctbl[i].specific)
                        nfcpufunctbl[cft_map(tbl[i].opcode)] = nfctbl[i].handler;
        }

    count=0;
    for (opcode = 0; opcode < 65536; opcode++) {
        if (compfunctbl[cft_map(opcode)])
            count++;
    }
        write_log("<JIT compiler> : supposedly %d compileable opcodes!\n",count);

    /* Initialise state */
    create_popalls();
    alloc_cache();
    reset_lists();

    for (i=0;i<TAGSIZE;i+=2) {
        cache_tags[i].handler=(cpuop_func *)popall_execute_normal;
        cache_tags[i+1].bi=NULL;
    }
    
#if 0
    for (i=0;i<N_REGS;i++) {
        empty_ss.nat[i].holds=-1;
        empty_ss.nat[i].validsize=0;
        empty_ss.nat[i].dirtysize=0;
    }
#endif
    for (i=0;i<VREGS;i++) {
        empty_ss.virt[i]=L_NEEDED;
    }
    for (i=0;i<N_REGS;i++) {
        empty_ss.nat[i]=L_UNKNOWN;
    }
    default_ss=empty_ss;
}


static void flush_icache_none(int n)
{
        /* Nothing to do.  */
}
    
static void flush_icache_hard(int n)
{
    uae_u32 i;
    blockinfo* bi, *dbi;

    hard_flush_count++;
#if 0
    write_log("Flush Icache_hard(%d/%x/%p), %u KB\n",
           n,regs.pc,regs.pc_p,current_cache_size/1024);
        current_cache_size = 0;
#endif
    bi=active;
    while(bi) {
        cache_tags[cacheline(bi->pc_p)].handler=(cpuop_func *)popall_execute_normal;
        cache_tags[cacheline(bi->pc_p)+1].bi=NULL;
        dbi=bi; bi=bi->next;
        free_blockinfo(dbi);
    }
    bi=dormant;
    while(bi) {
        cache_tags[cacheline(bi->pc_p)].handler=(cpuop_func *)popall_execute_normal;
        cache_tags[cacheline(bi->pc_p)+1].bi=NULL;
        dbi=bi; bi=bi->next;
        free_blockinfo(dbi);
    }

    reset_lists();
    if (!compiled_code)
        return;
    current_compile_p=compiled_code;
        SPCFLAGS_SET( SPCFLAG_JIT_EXEC_RETURN ); /* To get out of compiled code */
}


/* "Soft flushing" --- instead of actually throwing everything away,
   we simply mark everything as "needs to be checked". 
*/

static inline void flush_icache_lazy(int n)
{
    uae_u32 i;
    blockinfo* bi;
    blockinfo* bi2;

        soft_flush_count++;
        if (!active)
            return;

        bi=active;
        while (bi) {
            uae_u32 cl=cacheline(bi->pc_p);
                if (bi->status==BI_INVALID ||
                        bi->status==BI_NEED_RECOMP) { 
                if (bi==cache_tags[cl+1].bi) 
                    cache_tags[cl].handler=(cpuop_func *)popall_execute_normal;
                bi->handler_to_use=(cpuop_func *)popall_execute_normal;
                set_dhtu(bi,bi->direct_pen);
            bi->status=BI_INVALID;
            }
            else {
                if (bi==cache_tags[cl+1].bi) 
                    cache_tags[cl].handler=(cpuop_func *)popall_check_checksum;
                bi->handler_to_use=(cpuop_func *)popall_check_checksum;
                set_dhtu(bi,bi->direct_pcc);
                bi->status=BI_NEED_CHECK;
            }
            bi2=bi;
            bi=bi->next;
        }
        /* bi2 is now the last entry in the active list */
        bi2->next=dormant;
        if (dormant)
            dormant->prev_p=&(bi2->next);
    
        dormant=active;
        active->prev_p=&dormant;
        active=NULL;
}

static void catastrophe(void)
{
    abort();
}

int failure;

#define TARGET_M68K             0
#define TARGET_POWERPC  1
#define TARGET_X86              2
#if defined(i386) || defined(__i386__)
#define TARGET_NATIVE   TARGET_X86
#endif
#if defined(powerpc) || defined(__powerpc__)
#define TARGET_NATIVE   TARGET_POWERPC
#endif

#ifdef ENABLE_MON
static uae_u32 mon_read_byte_jit(uae_u32 addr)
{
        uae_u8 *m = (uae_u8 *)addr;
        return (uae_u32)(*m);
}
 
static void mon_write_byte_jit(uae_u32 addr, uae_u32 b)
{
        uae_u8 *m = (uae_u8 *)addr;
        *m = b;
}
#endif

void disasm_block(int target, uint8 * start, size_t length)
{
        if (!JITDebug)
                return;
        
#if defined(JIT_DEBUG) && defined(ENABLE_MON)
        char disasm_str[200];
        sprintf(disasm_str, "%s $%x $%x",
                        target == TARGET_M68K ? "d68" :
                        target == TARGET_X86 ? "d86" :
                        target == TARGET_POWERPC ? "d" : "x",
                        start, start + length - 1);
        
        uae_u32 (*old_mon_read_byte)(uae_u32) = mon_read_byte;
        void (*old_mon_write_byte)(uae_u32, uae_u32) = mon_write_byte;
        
        mon_read_byte = mon_read_byte_jit;
        mon_write_byte = mon_write_byte_jit;
        
        char *arg[5] = {"mon", "-m", "-r", disasm_str, NULL};
        mon(4, arg);
        
        mon_read_byte = old_mon_read_byte;
        mon_write_byte = old_mon_write_byte;
#endif
}

static inline void disasm_native_block(uint8 *start, size_t length)
{
        disasm_block(TARGET_NATIVE, start, length);
}

static inline void disasm_m68k_block(uint8 *start, size_t length)
{
        disasm_block(TARGET_M68K, start, length);
}

#ifdef HAVE_GET_WORD_UNSWAPPED
# define DO_GET_OPCODE(a) (do_get_mem_word_unswapped((uae_u16 *)(a)))
#else
# define DO_GET_OPCODE(a) (do_get_mem_word((uae_u16 *)(a)))
#endif

#if JIT_DEBUG
static uae_u8 *last_regs_pc_p = 0;
static uae_u8 *last_compiled_block_addr = 0;

void compiler_dumpstate(void)
{
        if (!JITDebug)
                return;
        
        write_log("### Host addresses\n");
        write_log("MEM_BASE    : %x\n", MEMBaseDiff);
        write_log("PC_P        : %p\n", &regs.pc_p);
        write_log("SPCFLAGS    : %p\n", &regs.spcflags);
        write_log("D0-D7       : %p-%p\n", &regs.regs[0], &regs.regs[7]);
        write_log("A0-A7       : %p-%p\n", &regs.regs[8], &regs.regs[15]);
        write_log("\n");
        
        write_log("### M68k processor state\n");
        m68k_dumpstate(0);
        write_log("\n");
        
        write_log("### Block in Mac address space\n");
        write_log("M68K block   : %p\n",
                          (void *)get_virtual_address(last_regs_pc_p));
        write_log("Native block : %p (%d bytes)\n",
                          (void *)get_virtual_address(last_compiled_block_addr),
                          get_blockinfo_addr(last_regs_pc_p)->direct_handler_size);
        write_log("\n");
}
#endif

static void compile_block(cpu_history* pc_hist, int blocklen)
{
    if (letit && compiled_code) {
#if PROFILE_COMPILE_TIME
        compile_count++;
        clock_t start_time = clock();
#endif
#if JIT_DEBUG
        bool disasm_block = false;
#endif
        
        /* OK, here we need to 'compile' a block */
        int i;
        int r;
        int was_comp=0;
        uae_u8 liveflags[MAXRUN+1];
#if USE_CHECKSUM_INFO
        bool trace_in_rom = isinrom((uintptr)pc_hist[0].location);
        uae_u32 max_pcp=(uae_u32)pc_hist[blocklen - 1].location;
        uae_u32 min_pcp=max_pcp;
#else
        uae_u32 max_pcp=(uae_u32)pc_hist[0].location;
        uae_u32 min_pcp=max_pcp;
#endif
        uae_u32 cl=cacheline(pc_hist[0].location);
        void* specflags=(void*)&regs.spcflags;
        blockinfo* bi=NULL;
        blockinfo* bi2;
        int extra_len=0;

        redo_current_block=0;
        if (current_compile_p>=max_compile_start)
            flush_icache_hard(7);

        alloc_blockinfos();

        bi=get_blockinfo_addr_new(pc_hist[0].location,0);
        bi2=get_blockinfo(cl);

        optlev=bi->optlevel;
        if (bi->status!=BI_INVALID) {
            Dif (bi!=bi2) { 
                /* I don't think it can happen anymore. Shouldn't, in 
                   any case. So let's make sure... */
                write_log("WOOOWOO count=%d, ol=%d %p %p\n",
                       bi->count,bi->optlevel,bi->handler_to_use,
                       cache_tags[cl].handler);
                abort();
            }

            Dif (bi->count!=-1 && bi->status!=BI_NEED_RECOMP) {
                write_log("bi->count=%d, bi->status=%d\n",bi->count,bi->status);
                /* What the heck? We are not supposed to be here! */
                abort();
            }
        }       
        if (bi->count==-1) {
            optlev++;
            while (!optcount[optlev])
                optlev++;
            bi->count=optcount[optlev]-1;
        }
        current_block_pc_p=(uae_u32)pc_hist[0].location;
        
        remove_deps(bi); /* We are about to create new code */
        bi->optlevel=optlev;
        bi->pc_p=(uae_u8*)pc_hist[0].location;
#if USE_CHECKSUM_INFO
        free_checksum_info_chain(bi->csi);
        bi->csi = NULL;
#endif
        
        liveflags[blocklen]=0x1f; /* All flags needed afterwards */
        i=blocklen;
        while (i--) {
            uae_u16* currpcp=pc_hist[i].location;
            uae_u32 op=DO_GET_OPCODE(currpcp);

#if USE_CHECKSUM_INFO
                trace_in_rom = trace_in_rom && isinrom((uintptr)currpcp);
#if USE_INLINING
                if (is_const_jump(op)) {
                        checksum_info *csi = alloc_checksum_info();
                        csi->start_p = (uae_u8 *)min_pcp;
                        csi->length = max_pcp - min_pcp + LONGEST_68K_INST;
                        csi->next = bi->csi;
                        bi->csi = csi;
                        max_pcp = (uae_u32)currpcp;
                }
#endif
                min_pcp = (uae_u32)currpcp;
#else
            if ((uae_u32)currpcp<min_pcp)
                min_pcp=(uae_u32)currpcp;
            if ((uae_u32)currpcp>max_pcp)
                max_pcp=(uae_u32)currpcp;
#endif

                liveflags[i]=((liveflags[i+1]&
                               (~prop[op].set_flags))|
                              prop[op].use_flags);
                if (prop[op].is_addx && (liveflags[i+1]&FLAG_Z)==0)
                    liveflags[i]&= ~FLAG_Z;
        }

#if USE_CHECKSUM_INFO
        checksum_info *csi = alloc_checksum_info();
        csi->start_p = (uae_u8 *)min_pcp;
        csi->length = max_pcp - min_pcp + LONGEST_68K_INST;
        csi->next = bi->csi;
        bi->csi = csi;
#endif

        bi->needed_flags=liveflags[0];

        align_target(align_loops);
        was_comp=0;

        bi->direct_handler=(cpuop_func *)get_target();
        set_dhtu(bi,bi->direct_handler);
        bi->status=BI_COMPILING;
        current_block_start_target=(uae_u32)get_target();
        
        log_startblock();
        
        if (bi->count>=0) { /* Need to generate countdown code */
            raw_mov_l_mi((uae_u32)&regs.pc_p,(uae_u32)pc_hist[0].location);
            raw_sub_l_mi((uae_u32)&(bi->count),1);
            raw_jl((uae_u32)popall_recompile_block);
        }
        if (optlev==0) { /* No need to actually translate */
            /* Execute normally without keeping stats */
            raw_mov_l_mi((uae_u32)&regs.pc_p,(uae_u32)pc_hist[0].location);
            raw_jmp((uae_u32)popall_exec_nostats); 
        }
        else {
            reg_alloc_run=0;
            next_pc_p=0;
            taken_pc_p=0;
            branch_cc=0;
                
            comp_pc_p=(uae_u8*)pc_hist[0].location;
            init_comp();
            was_comp=1;

#if JIT_DEBUG
                if (JITDebug) {
                        raw_mov_l_mi((uae_u32)&last_regs_pc_p,(uae_u32)pc_hist[0].location);
                        raw_mov_l_mi((uae_u32)&last_compiled_block_addr,(uae_u32)current_block_start_target);
                }
#endif
                
            for (i=0;i<blocklen &&
                     get_target_noopt()<max_compile_start;i++) {
                cpuop_func **cputbl;
                compop_func **comptbl;
                uae_u32 opcode=DO_GET_OPCODE(pc_hist[i].location);
                needed_flags=(liveflags[i+1] & prop[opcode].set_flags);
                if (!needed_flags) {
                    cputbl=nfcpufunctbl;
                    comptbl=nfcompfunctbl;
                }
                else {
                    cputbl=cpufunctbl;
                    comptbl=compfunctbl;
                }
                
                failure = 1; // gb-- defaults to failure state
                if (comptbl[opcode] && optlev>1) { 
                    failure=0;
                    if (!was_comp) {
                        comp_pc_p=(uae_u8*)pc_hist[i].location;
                        init_comp();
                    }
                    was_comp++;

                    comptbl[opcode](opcode);
                    freescratch();
                    if (!(liveflags[i+1] & FLAG_CZNV)) { 
                        /* We can forget about flags */
                        dont_care_flags();
                    }
#if INDIVIDUAL_INST 
                    flush(1);
                    nop();
                    flush(1);
                    was_comp=0;
#endif
                }
                
                if (failure) {
                    if (was_comp) {
                        flush(1);
                        was_comp=0;
                    }
                    raw_mov_l_ri(REG_PAR1,(uae_u32)opcode);
#if USE_NORMAL_CALLING_CONVENTION
                    raw_push_l_r(REG_PAR1);
#endif
                    raw_mov_l_mi((uae_u32)&regs.pc_p,
                                 (uae_u32)pc_hist[i].location);
                    raw_call((uae_u32)cputbl[opcode]);
#if PROFILE_UNTRANSLATED_INSNS
                        // raw_cputbl_count[] is indexed with plain opcode (in m68k order)
                        raw_add_l_mi((uae_u32)&raw_cputbl_count[cft_map(opcode)],1);
#endif
                    //raw_add_l_mi((uae_u32)&oink,1); // FIXME
#if USE_NORMAL_CALLING_CONVENTION
                    raw_inc_sp(4);
#endif
                    if (needed_flags) {
                        //raw_mov_l_mi((uae_u32)&foink3,(uae_u32)opcode+65536);
                    }
                    else {
                        //raw_mov_l_mi((uae_u32)&foink3,(uae_u32)opcode);
                    }
                    
                    if (i < blocklen - 1) {
                        uae_s8* branchadd;
                        
                        raw_mov_l_rm(0,(uae_u32)specflags);
                        raw_test_l_rr(0,0);
                        raw_jz_b_oponly();
                        branchadd=(uae_s8 *)get_target();
                        emit_byte(0);
                        raw_jmp((uae_u32)popall_do_nothing);
                        *branchadd=(uae_u32)get_target()-(uae_u32)branchadd-1;
                    }
                }
            }
#if 1 /* This isn't completely kosher yet; It really needs to be
         be integrated into a general inter-block-dependency scheme */
            if (next_pc_p && taken_pc_p &&
                was_comp && taken_pc_p==current_block_pc_p) {
                blockinfo* bi1=get_blockinfo_addr_new((void*)next_pc_p,0);
                blockinfo* bi2=get_blockinfo_addr_new((void*)taken_pc_p,0);
                uae_u8 x=bi1->needed_flags;
                
                if (x==0xff || 1) {  /* To be on the safe side */
                    uae_u16* next=(uae_u16*)next_pc_p;
                    uae_u32 op=DO_GET_OPCODE(next);

                    x=0x1f;
                    x&=(~prop[op].set_flags);
                    x|=prop[op].use_flags;
                }
                
                x|=bi2->needed_flags;
                if (!(x & FLAG_CZNV)) { 
                    /* We can forget about flags */
                    dont_care_flags();
                    extra_len+=2; /* The next instruction now is part of this
                                     block */
                }
                    
            }
#endif
                log_flush();

            if (next_pc_p) { /* A branch was registered */
                uae_u32 t1=next_pc_p;
                uae_u32 t2=taken_pc_p;
                int     cc=branch_cc;
                
                uae_u32* branchadd;
                uae_u32* tba;
                bigstate tmp;
                blockinfo* tbi;

                if (taken_pc_p<next_pc_p) {
                    /* backward branch. Optimize for the "taken" case ---
                       which means the raw_jcc should fall through when
                       the 68k branch is taken. */
                    t1=taken_pc_p;
                    t2=next_pc_p;
                    cc=branch_cc^1;
                }
                
                tmp=live; /* ouch! This is big... */
                raw_jcc_l_oponly(cc);
                branchadd=(uae_u32*)get_target();
                emit_long(0);
                
                /* predicted outcome */
                tbi=get_blockinfo_addr_new((void*)t1,1);
                match_states(tbi);
                raw_cmp_l_mi((uae_u32)specflags,0);
                raw_jcc_l_oponly(4);
                tba=(uae_u32*)get_target();
                emit_long(get_handler(t1)-((uae_u32)tba+4));
                raw_mov_l_mi((uae_u32)&regs.pc_p,t1);
                raw_jmp((uae_u32)popall_do_nothing);
                create_jmpdep(bi,0,tba,t1);

                align_target(align_jumps);
                /* not-predicted outcome */
                *branchadd=(uae_u32)get_target()-((uae_u32)branchadd+4);
                live=tmp; /* Ouch again */
                tbi=get_blockinfo_addr_new((void*)t2,1);
                match_states(tbi);

                //flush(1); /* Can only get here if was_comp==1 */
                raw_cmp_l_mi((uae_u32)specflags,0);
                raw_jcc_l_oponly(4);
                tba=(uae_u32*)get_target();
                emit_long(get_handler(t2)-((uae_u32)tba+4));
                raw_mov_l_mi((uae_u32)&regs.pc_p,t2);
                raw_jmp((uae_u32)popall_do_nothing);
                create_jmpdep(bi,1,tba,t2);
            }           
            else 
            {
                if (was_comp) {
                    flush(1);
                }
                
                /* Let's find out where next_handler is... */
                if (was_comp && isinreg(PC_P)) { 
                    r=live.state[PC_P].realreg;
                        raw_and_l_ri(r,TAGMASK);
                        int r2 = (r==0) ? 1 : 0;
                        raw_mov_l_ri(r2,(uae_u32)popall_do_nothing);
                        raw_cmp_l_mi((uae_u32)specflags,0);
                        raw_cmov_l_rm_indexed(r2,(uae_u32)cache_tags,r,4,4);
                        raw_jmp_r(r2);
                }
                else if (was_comp && isconst(PC_P)) {
                    uae_u32 v=live.state[PC_P].val;
                    uae_u32* tba;
                    blockinfo* tbi;

                    tbi=get_blockinfo_addr_new((void*)v,1);
                    match_states(tbi);

                        raw_cmp_l_mi((uae_u32)specflags,0);
                        raw_jcc_l_oponly(4);
                    tba=(uae_u32*)get_target();
                    emit_long(get_handler(v)-((uae_u32)tba+4));
                    raw_mov_l_mi((uae_u32)&regs.pc_p,v);
                    raw_jmp((uae_u32)popall_do_nothing);
                    create_jmpdep(bi,0,tba,v);
                }
                else {
                    r=REG_PC_TMP;
                    raw_mov_l_rm(r,(uae_u32)&regs.pc_p);
                        raw_and_l_ri(r,TAGMASK);
                        int r2 = (r==0) ? 1 : 0;
                        raw_mov_l_ri(r2,(uae_u32)popall_do_nothing);
                        raw_cmp_l_mi((uae_u32)specflags,0);
                        raw_cmov_l_rm_indexed(r2,(uae_u32)cache_tags,r,4,4);
                        raw_jmp_r(r2);
                }
            }
        }

#if USE_MATCH   
        if (callers_need_recompile(&live,&(bi->env))) {
            mark_callers_recompile(bi);
        }

        big_to_small_state(&live,&(bi->env));
#endif

#if USE_CHECKSUM_INFO
        remove_from_list(bi);
        if (trace_in_rom) {
                // No need to checksum that block trace on cache invalidation
                free_checksum_info_chain(bi->csi);
                bi->csi = NULL;
                add_to_dormant(bi);
        }
        else {
            calc_checksum(bi,&(bi->c1),&(bi->c2));
                add_to_active(bi);
        }
#else
        if (next_pc_p+extra_len>=max_pcp && 
            next_pc_p+extra_len<max_pcp+LONGEST_68K_INST) 
            max_pcp=next_pc_p+extra_len;  /* extra_len covers flags magic */
        else
            max_pcp+=LONGEST_68K_INST;

        bi->len=max_pcp-min_pcp;
        bi->min_pcp=min_pcp;
        
        remove_from_list(bi);
        if (isinrom(min_pcp) && isinrom(max_pcp)) {
            add_to_dormant(bi); /* No need to checksum it on cache flush.
                                   Please don't start changing ROMs in
                                   flight! */
        }
        else {
            calc_checksum(bi,&(bi->c1),&(bi->c2));
            add_to_active(bi);
        }
#endif
        
        current_cache_size += get_target() - (uae_u8 *)current_compile_p;
        
#if JIT_DEBUG
        if (JITDebug)
                bi->direct_handler_size = get_target() - (uae_u8 *)current_block_start_target;
        
        if (JITDebug && disasm_block) {
                uaecptr block_addr = start_pc + ((char *)pc_hist[0].location - (char *)start_pc_p);
                D(bug("M68K block @ 0x%08x (%d insns)\n", block_addr, blocklen));
                uae_u32 block_size = ((uae_u8 *)pc_hist[blocklen - 1].location - (uae_u8 *)pc_hist[0].location) + 1;
                disasm_m68k_block((uae_u8 *)pc_hist[0].location, block_size);
                D(bug("Compiled block @ 0x%08x\n", pc_hist[0].location));
                disasm_native_block((uae_u8 *)current_block_start_target, bi->direct_handler_size);
                getchar();
        }
#endif
        
        log_dump();
        align_target(align_jumps);

        /* This is the non-direct handler */
        bi->handler=
            bi->handler_to_use=(cpuop_func *)get_target();
        raw_cmp_l_mi((uae_u32)&regs.pc_p,(uae_u32)pc_hist[0].location);
        raw_jnz((uae_u32)popall_cache_miss);
        comp_pc_p=(uae_u8*)pc_hist[0].location;

        bi->status=BI_FINALIZING;
        init_comp();
        match_states(bi);
        flush(1);

        raw_jmp((uae_u32)bi->direct_handler);

        current_compile_p=get_target();
        raise_in_cl_list(bi);
        
        /* We will flush soon, anyway, so let's do it now */
        if (current_compile_p>=max_compile_start)
                flush_icache_hard(7);
        
        bi->status=BI_ACTIVE;
        if (redo_current_block)
            block_need_recompile(bi);
        
#if PROFILE_COMPILE_TIME
        compile_time += (clock() - start_time);
#endif
    }
}

void do_nothing(void)
{
    /* What did you expect this to do? */
}

void exec_nostats(void)
{
        for (;;)  { 
                uae_u32 opcode = GET_OPCODE;
                (*cpufunctbl[opcode])(opcode);
                if (end_block(opcode) || SPCFLAGS_TEST(SPCFLAG_ALL)) {
                        return; /* We will deal with the spcflags in the caller */
                }
        }
}

void execute_normal(void)
{
        if (!check_for_cache_miss()) {
                cpu_history pc_hist[MAXRUN];
                int blocklen = 0;
#if REAL_ADDRESSING || DIRECT_ADDRESSING
                start_pc_p = regs.pc_p;
                start_pc = get_virtual_address(regs.pc_p);
#else
                start_pc_p = regs.pc_oldp;  
                start_pc = regs.pc; 
#endif
                for (;;)  { /* Take note: This is the do-it-normal loop */
                        pc_hist[blocklen++].location = (uae_u16 *)regs.pc_p;
                        uae_u32 opcode = GET_OPCODE;
#if FLIGHT_RECORDER
                        m68k_record_step(m68k_getpc());
#endif
                        (*cpufunctbl[opcode])(opcode);
                        if (end_block(opcode) || SPCFLAGS_TEST(SPCFLAG_ALL) || blocklen>=MAXRUN) {
                                compile_block(pc_hist, blocklen);
                                return; /* We will deal with the spcflags in the caller */
                        }
                        /* No need to check regs.spcflags, because if they were set,
                        we'd have ended up inside that "if" */
                }
        }
}

typedef void (*compiled_handler)(void);

#ifdef X86_ASSEMBLY
void (*m68k_compile_execute)(void) = NULL;
#else
void m68k_do_compile_execute(void)
{
        for (;;) {
                ((compiled_handler)(pushall_call_handler))();
                /* Whenever we return from that, we should check spcflags */
                if (SPCFLAGS_TEST(SPCFLAG_ALL)) {
                        if (m68k_do_specialties ())
                                return;
                }
        }
}
#endif
Revision:	1.15
Committed:	2003-03-13T15:57:01Z (21 years, 6 months ago) by gbeauche
Branch:	MAIN
Changes since 1.14:	+21 -10 lines
Log Message:	Workaround change in flags handling for BSF instruction on Pentium 4. i.e. currently disable translation of ADDX/SUBX/B<CHG,CLR,SET,TST> instructions in that case. That is to say, better (much?) slower than inaccurate. :-(