/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 *   Mupen64plus - assem_x86.c                                             *
 *   Copyright (C) 2009-2010 Ari64                                         *
 *                                                                         *
 *   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.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.          *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

int cycle_count;
int last_count;
int pcaddr;
int pending_exception;
int branch_target;
uint64_t readmem_dword;
precomp_instr fake_pc;
u_int memory_map[1048576];
u_int mini_ht[32][2]  __attribute__((aligned(8)));
u_char restore_candidate[512]  __attribute__((aligned(4)));

void do_interrupt();
void jump_vaddr_eax();
void jump_vaddr_ecx();
void jump_vaddr_edx();
void jump_vaddr_ebx();
void jump_vaddr_ebp();
void jump_vaddr_edi();

const u_int jump_vaddr_reg[8] = {
  (int)jump_vaddr_eax,
  (int)jump_vaddr_ecx,
  (int)jump_vaddr_edx,
  (int)jump_vaddr_ebx,
  0,
  (int)jump_vaddr_ebp,
  0,
  (int)jump_vaddr_edi };

const u_short rounding_modes[4] = {
  0x33F, // round
  0xF3F, // trunc
  0xB3F, // ceil
  0x73F};// floor

#include "fpu.h"

// We need these for cmovcc instructions on x86
u_int const_zero=0;
u_int const_one=1;

/* Linker */

void set_jump_target(int addr,int target)
{
  u_char *ptr=(u_char *)addr;
  if(*ptr==0x0f)
  {
    assert(ptr[1]>=0x80&&ptr[1]<=0x8f);
    u_int *ptr2=(u_int *)(ptr+2);
    *ptr2=target-(int)ptr2-4;
  }
  else if(*ptr==0xe8||*ptr==0xe9) {
    u_int *ptr2=(u_int *)(ptr+1);
    *ptr2=target-(int)ptr2-4;
  }
  else
  {
    assert(*ptr==0xc7); /* mov immediate (store address) */
    u_int *ptr2=(u_int *)(ptr+6);
    *ptr2=target;
  }
}

void kill_pointer(void *stub)
{
  int *i_ptr=*((int **)(stub+6));
  *i_ptr=(int)stub-(int)i_ptr-4;
}
int get_pointer(void *stub)
{
  int *i_ptr=*((int **)(stub+6));
  return *i_ptr+(int)i_ptr+4;
}

// Find the "clean" entry point from a "dirty" entry point
// by skipping past the call to verify_code
u_int get_clean_addr(int addr)
{
  u_char *ptr=(u_char *)addr;
  assert(ptr[20]==0xE8); // call instruction
  assert(ptr[25]==0x83); // pop (add esp,4) instruction
  if(ptr[28]==0xE9) return *(u_int *)(ptr+29)+addr+33; // follow jmp
  else return(addr+28);
}

int verify_dirty(int addr)
{
  u_char *ptr=(u_char *)addr;
  assert(ptr[5]==0xB8);
  u_int source=*(u_int *)(ptr+6);
  u_int copy=*(u_int *)(ptr+11);
  u_int len=*(u_int *)(ptr+16);
  assert(ptr[20]==0xE8); // call instruction
  u_int verifier=*(u_int *)(ptr+21)+(u_int)ptr+25;
  if(verifier==(u_int)verify_code_vm||verifier==(u_int)verify_code_ds) {
    unsigned int page=source>>12;
    unsigned int map_value=memory_map[page];
    if(map_value>=0x80000000) return 0;
    while(page<((source+len-1)>>12)) {
      if((memory_map[++page]<<2)!=(map_value<<2)) return 0;
    }
    source = source+(map_value<<2);
  }
  //printf("verify_dirty: %x %x %x\n",source,copy,len);
  return !memcmp((void *)source,(void *)copy,len);
}

// This doesn't necessarily find all clean entry points, just
// guarantees that it's not dirty
int isclean(int addr)
{
  u_char *ptr=(u_char *)addr;
  if(ptr[5]!=0xB8) return 1; // mov imm,%eax
  if(ptr[10]!=0xBB) return 1; // mov imm,%ebx
  if(ptr[15]!=0xB9) return 1; // mov imm,%ecx
  if(ptr[20]!=0xE8) return 1; // call instruction
  if(ptr[25]!=0x83) return 1; // pop (add esp,4) instruction
  return 0;
}

void get_bounds(int addr,u_int *start,u_int *end)
{
  u_char *ptr=(u_char *)addr;
  assert(ptr[5]==0xB8);
  u_int source=*(u_int *)(ptr+6);
  //u_int copy=*(u_int *)(ptr+11);
  u_int len=*(u_int *)(ptr+16);
  assert(ptr[20]==0xE8); // call instruction
  u_int verifier=*(u_int *)(ptr+21)+(u_int)ptr+25;
  if(verifier==(u_int)verify_code_vm||verifier==(u_int)verify_code_ds) {
    if(memory_map[source>>12]>=0x80000000) source = 0;
    else source = source+(memory_map[source>>12]<<2);
  }
  if(start) *start=source;
  if(end) *end=source+len;
}

/* Register allocation */

// Note: registers are allocated clean (unmodified state)
// if you intend to modify the register, you must call dirty_reg().
void alloc_reg(struct regstat *cur,int i,signed char reg)
{
  int r,hr;
  int preferred_reg = (reg&3)+(reg>28)*4-(reg==32)+2*(reg==36)-(reg==40);
  
  // Don't allocate unused registers
  if((cur->u>>reg)&1) return;
  
  // see if it's already allocated
  for(hr=0;hr<HOST_REGS;hr++)
  {
    if(cur->regmap[hr]==reg) return;
  }
  
  // Keep the same mapping if the register was already allocated in a loop
  preferred_reg = loop_reg(i,reg,preferred_reg);
  
  // Try to allocate the preferred register
  if(cur->regmap[preferred_reg]==-1) {
    cur->regmap[preferred_reg]=reg;
    cur->dirty&=~(1<<preferred_reg);
    cur->isconst&=~(1<<preferred_reg);
    return;
  }
  r=cur->regmap[preferred_reg];
  if(r<64&&((cur->u>>r)&1)) {
    cur->regmap[preferred_reg]=reg;
    cur->dirty&=~(1<<preferred_reg);
    cur->isconst&=~(1<<preferred_reg);
    return;
  }
  if(r>=64&&((cur->uu>>(r&63))&1)) {
    cur->regmap[preferred_reg]=reg;
    cur->dirty&=~(1<<preferred_reg);
    cur->isconst&=~(1<<preferred_reg);
    return;
  }
  
  // Try to allocate EAX, EBX, ECX, or EDX
  // We prefer these because they can do byte and halfword loads
  for(hr=0;hr<4;hr++) {
    if(cur->regmap[hr]==-1) {
      cur->regmap[hr]=reg;
      cur->dirty&=~(1<<hr);
      cur->isconst&=~(1<<hr);
      return;
    }
  }
  
  // Clear any unneeded registers
  // We try to keep the mapping consistent, if possible, because it
  // makes branches easier (especially loops).  So we try to allocate
  // first (see above) before removing old mappings.  If this is not
  // possible then go ahead and clear out the registers that are no
  // longer needed.
  for(hr=0;hr<HOST_REGS;hr++)
  {
    r=cur->regmap[hr];
    if(r>=0) {
      if(r<64) {
        if((cur->u>>r)&1)
          if(i==0||(unneeded_reg[i-1]>>r)&1) {cur->regmap[hr]=-1;break;}
      }
      else
      {
        if((cur->uu>>(r&63))&1)
          if(i==0||(unneeded_reg_upper[i-1]>>(r&63))&1) {cur->regmap[hr]=-1;break;}
      }
    }
  }
  // Try to allocate any available register, but prefer
  // registers that have not been used recently.
  if(i>0) {
    for(hr=0;hr<HOST_REGS;hr++) {
      if(hr!=EXCLUDE_REG&&cur->regmap[hr]==-1) {
        if(regs[i-1].regmap[hr]!=rs1[i-1]&&regs[i-1].regmap[hr]!=rs2[i-1]&&regs[i-1].regmap[hr]!=rt1[i-1]&&regs[i-1].regmap[hr]!=rt2[i-1]) {
          cur->regmap[hr]=reg;
          cur->dirty&=~(1<<hr);
          cur->isconst&=~(1<<hr);
          return;
        }
      }
    }
  }
  // Try to allocate any available register
  for(hr=0;hr<HOST_REGS;hr++) {
    if(hr!=EXCLUDE_REG&&cur->regmap[hr]==-1) {
      cur->regmap[hr]=reg;
      cur->dirty&=~(1<<hr);
      cur->isconst&=~(1<<hr);
      return;
    }
  }
  
  // Ok, now we have to evict someone
  // Pick a register we hopefully won't need soon
  u_char hsn[MAXREG+1];
  memset(hsn,10,sizeof(hsn));
  int j;
  lsn(hsn,i,&preferred_reg);
  //printf("hsn(%x): %d %d %d %d %d %d %d\n",start+i*4,hsn[cur->regmap[0]&63],hsn[cur->regmap[1]&63],hsn[cur->regmap[2]&63],hsn[cur->regmap[3]&63],hsn[cur->regmap[5]&63],hsn[cur->regmap[6]&63],hsn[cur->regmap[7]&63]);
  if(i>0) {
    // Don't evict the cycle count at entry points, otherwise the entry
    // stub will have to write it.
    if(bt[i]&&hsn[CCREG]>2) hsn[CCREG]=2;
    if(i>1&&hsn[CCREG]>2&&(itype[i-2]==RJUMP||itype[i-2]==UJUMP||itype[i-2]==CJUMP||itype[i-2]==SJUMP||itype[i-2]==FJUMP)) hsn[CCREG]=2;
    for(j=10;j>=3;j--)
    {
      // Alloc preferred register if available
      if(hsn[r=cur->regmap[preferred_reg]&63]==j) {
        for(hr=0;hr<HOST_REGS;hr++) {
          // Evict both parts of a 64-bit register
          if((cur->regmap[hr]&63)==r) {
            cur->regmap[hr]=-1;
            cur->dirty&=~(1<<hr);
            cur->isconst&=~(1<<hr);
          }
        }
        cur->regmap[preferred_reg]=reg;
        return;
      }
      for(r=1;r<=MAXREG;r++)
      {
        if(hsn[r]==j&&r!=rs1[i-1]&&r!=rs2[i-1]&&r!=rt1[i-1]&&r!=rt2[i-1]) {
          for(hr=0;hr<HOST_REGS;hr++) {
            if(hr!=HOST_CCREG||j<hsn[CCREG]) {
              if(cur->regmap[hr]==r+64) {
                cur->regmap[hr]=reg;
                cur->dirty&=~(1<<hr);
                cur->isconst&=~(1<<hr);
                return;
              }
            }
          }
          for(hr=0;hr<HOST_REGS;hr++) {
            if(hr!=HOST_CCREG||j<hsn[CCREG]) {
              if(cur->regmap[hr]==r) {
                cur->regmap[hr]=reg;
                cur->dirty&=~(1<<hr);
                cur->isconst&=~(1<<hr);
                return;
              }
            }
          }
        }
      }
    }
  }
  for(j=10;j>=0;j--)
  {
    for(r=1;r<=MAXREG;r++)
    {
      if(hsn[r]==j) {
        for(hr=0;hr<HOST_REGS;hr++) {
          if(cur->regmap[hr]==r+64) {
            cur->regmap[hr]=reg;
            cur->dirty&=~(1<<hr);
            cur->isconst&=~(1<<hr);
            return;
          }
        }
        for(hr=0;hr<HOST_REGS;hr++) {
          if(cur->regmap[hr]==r) {
            cur->regmap[hr]=reg;
            cur->dirty&=~(1<<hr);
            cur->isconst&=~(1<<hr);
            return;
          }
        }
      }
    }
  }
  printf("This shouldn't happen (alloc_reg)");exit(1);
}

void alloc_reg64(struct regstat *cur,int i,signed char reg)
{
  int preferred_reg = 5+reg%3;
  int r,hr;
  
  // allocate the lower 32 bits
  alloc_reg(cur,i,reg);
  
  // Don't allocate unused registers
  if((cur->uu>>reg)&1) return;
  
  // see if the upper half is already allocated
  for(hr=0;hr<HOST_REGS;hr++)
  {
    if(cur->regmap[hr]==reg+64) return;
  }
  
  // Keep the same mapping if the register was already allocated in a loop
  preferred_reg = loop_reg(i,reg,preferred_reg);
  
  // Try to allocate the preferred register
  if(cur->regmap[preferred_reg]==-1) {
    cur->regmap[preferred_reg]=reg|64;
    cur->dirty&=~(1<<preferred_reg);
    cur->isconst&=~(1<<preferred_reg);
    return;
  }
  r=cur->regmap[preferred_reg];
  if(r<64&&((cur->u>>r)&1)) {
    cur->regmap[preferred_reg]=reg|64;
    cur->dirty&=~(1<<preferred_reg);
    cur->isconst&=~(1<<preferred_reg);
    return;
  }
  if(r>=64&&((cur->uu>>(r&63))&1)) {
    cur->regmap[preferred_reg]=reg|64;
    cur->dirty&=~(1<<preferred_reg);
    cur->isconst&=~(1<<preferred_reg);
    return;
  }
  
  // Try to allocate EBP, ESI or EDI
  for(hr=5;hr<8;hr++) {
    if(cur->regmap[hr]==-1) {
      cur->regmap[hr]=reg|64;
      cur->dirty&=~(1<<hr);
      cur->isconst&=~(1<<hr);
      return;
    }
  }
  
  // Clear any unneeded registers
  // We try to keep the mapping consistent, if possible, because it
  // makes branches easier (especially loops).  So we try to allocate
  // first (see above) before removing old mappings.  If this is not
  // possible then go ahead and clear out the registers that are no
  // longer needed.
  for(hr=HOST_REGS-1;hr>=0;hr--)
  {
    r=cur->regmap[hr];
    if(r>=0) {
      if(r<64) {
        if((cur->u>>r)&1) {cur->regmap[hr]=-1;break;}
      }
      else
      {
        if((cur->uu>>(r&63))&1) {cur->regmap[hr]=-1;break;}
      }
    }
  }
  // Try to allocate any available register, but prefer
  // registers that have not been used recently.
  if(i>0) {
    for(hr=0;hr<HOST_REGS;hr++) {
      if(hr!=EXCLUDE_REG&&cur->regmap[hr]==-1) {
        if(regs[i-1].regmap[hr]!=rs1[i-1]&&regs[i-1].regmap[hr]!=rs2[i-1]&&regs[i-1].regmap[hr]!=rt1[i-1]&&regs[i-1].regmap[hr]!=rt2[i-1]) {
          cur->regmap[hr]=reg|64;
          cur->dirty&=~(1<<hr);
          cur->isconst&=~(1<<hr);
          return;
        }
      }
    }
  }
  // Try to allocate any available register
  for(hr=0;hr<HOST_REGS;hr++) {
    if(hr!=EXCLUDE_REG&&cur->regmap[hr]==-1) {
      cur->regmap[hr]=reg|64;
      cur->dirty&=~(1<<hr);
      cur->isconst&=~(1<<hr);
      return;
    }
  }
  
  // Ok, now we have to evict someone
  // Pick a register we hopefully won't need soon
  u_char hsn[MAXREG+1];
  memset(hsn,10,sizeof(hsn));
  int j;
  lsn(hsn,i,&preferred_reg);
  //printf("eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d\n",cur->regmap[0],cur->regmap[1],cur->regmap[2],cur->regmap[3],cur->regmap[5],cur->regmap[6],cur->regmap[7]);
  //printf("hsn(%x): %d %d %d %d %d %d %d\n",start+i*4,hsn[cur->regmap[0]&63],hsn[cur->regmap[1]&63],hsn[cur->regmap[2]&63],hsn[cur->regmap[3]&63],hsn[cur->regmap[5]&63],hsn[cur->regmap[6]&63],hsn[cur->regmap[7]&63]);
  if(i>0) {
    // Don't evict the cycle count at entry points, otherwise the entry
    // stub will have to write it.
    if(bt[i]&&hsn[CCREG]>2) hsn[CCREG]=2;
    if(i>1&&hsn[CCREG]>2&&(itype[i-2]==RJUMP||itype[i-2]==UJUMP||itype[i-2]==CJUMP||itype[i-2]==SJUMP||itype[i-2]==FJUMP)) hsn[CCREG]=2;
    for(j=10;j>=3;j--)
    {
      // Alloc preferred register if available
      if(hsn[r=cur->regmap[preferred_reg]&63]==j) {
        for(hr=0;hr<HOST_REGS;hr++) {
          // Evict both parts of a 64-bit register
          if((cur->regmap[hr]&63)==r) {
            cur->regmap[hr]=-1;
            cur->dirty&=~(1<<hr);
            cur->isconst&=~(1<<hr);
          }
        }
        cur->regmap[preferred_reg]=reg|64;
        return;
      }
      for(r=1;r<=MAXREG;r++)
      {
        if(hsn[r]==j&&r!=rs1[i-1]&&r!=rs2[i-1]&&r!=rt1[i-1]&&r!=rt2[i-1]) {
          for(hr=0;hr<HOST_REGS;hr++) {
            if(hr!=HOST_CCREG||j<hsn[CCREG]) {
              if(cur->regmap[hr]==r+64) {
                cur->regmap[hr]=reg|64;
                cur->dirty&=~(1<<hr);
                cur->isconst&=~(1<<hr);
                return;
              }
            }
          }
          for(hr=0;hr<HOST_REGS;hr++) {
            if(hr!=HOST_CCREG||j<hsn[CCREG]) {
              if(cur->regmap[hr]==r) {
                cur->regmap[hr]=reg|64;
                cur->dirty&=~(1<<hr);
                cur->isconst&=~(1<<hr);
                return;
              }
            }
          }
        }
      }
    }
  }
  for(j=10;j>=0;j--)
  {
    for(r=1;r<=MAXREG;r++)
    {
      if(hsn[r]==j) {
        for(hr=0;hr<HOST_REGS;hr++) {
          if(cur->regmap[hr]==r+64) {
            cur->regmap[hr]=reg|64;
            cur->dirty&=~(1<<hr);
            cur->isconst&=~(1<<hr);
            return;
          }
        }
        for(hr=0;hr<HOST_REGS;hr++) {
          if(cur->regmap[hr]==r) {
            cur->regmap[hr]=reg|64;
            cur->dirty&=~(1<<hr);
            cur->isconst&=~(1<<hr);
            return;
          }
        }
      }
    }
  }
  printf("This shouldn't happen");exit(1);
}

// Allocate a temporary register.  This is done without regard to
// dirty status or whether the register we request is on the unneeded list
// Note: This will only allocate one register, even if called multiple times
void alloc_reg_temp(struct regstat *cur,int i,signed char reg)
{
  int r,hr;
  int preferred_reg = -1;
  
  // see if it's already allocated
  for(hr=0;hr<HOST_REGS;hr++)
  {
    if(hr!=EXCLUDE_REG&&cur->regmap[hr]==reg) return;
  }
  
  // Try to allocate any available register, starting with EDI, ESI, EBP...
  // We prefer EDI, ESI, EBP since the others are used for byte/halfword stores
  for(hr=HOST_REGS-1;hr>=0;hr--) {
    if(hr!=EXCLUDE_REG&&cur->regmap[hr]==-1) {
      cur->regmap[hr]=reg;
      cur->dirty&=~(1<<hr);
      cur->isconst&=~(1<<hr);
      return;
    }
  }
  
  // Find an unneeded register
  for(hr=HOST_REGS-1;hr>=0;hr--)
  {
    r=cur->regmap[hr];
    if(r>=0) {
      if(r<64) {
        if((cur->u>>r)&1) {
          if(i==0||((unneeded_reg[i-1]>>r)&1)) {
            cur->regmap[hr]=reg;
            cur->dirty&=~(1<<hr);
            cur->isconst&=~(1<<hr);
            return;
          }
        }
      }
      else
      {
        if((cur->uu>>(r&63))&1) {
          if(i==0||((unneeded_reg_upper[i-1]>>(r&63))&1)) {
            cur->regmap[hr]=reg;
            cur->dirty&=~(1<<hr);
            cur->isconst&=~(1<<hr);
            return;
          }
        }
      }
    }
  }
  
  // Ok, now we have to evict someone
  // Pick a register we hopefully won't need soon
  // TODO: we might want to follow unconditional jumps here
  // TODO: get rid of dupe code and make this into a function
  u_char hsn[MAXREG+1];
  memset(hsn,10,sizeof(hsn));
  int j;
  lsn(hsn,i,&preferred_reg);
  //printf("hsn: %d %d %d %d %d %d %d\n",hsn[cur->regmap[0]&63],hsn[cur->regmap[1]&63],hsn[cur->regmap[2]&63],hsn[cur->regmap[3]&63],hsn[cur->regmap[5]&63],hsn[cur->regmap[6]&63],hsn[cur->regmap[7]&63]);
  if(i>0) {
    // Don't evict the cycle count at entry points, otherwise the entry
    // stub will have to write it.
    if(bt[i]&&hsn[CCREG]>2) hsn[CCREG]=2;
    if(i>1&&hsn[CCREG]>2&&(itype[i-2]==RJUMP||itype[i-2]==UJUMP||itype[i-2]==CJUMP||itype[i-2]==SJUMP||itype[i-2]==FJUMP)) hsn[CCREG]=2;
    for(j=10;j>=3;j--)
    {
      for(r=1;r<=MAXREG;r++)
      {
        if(hsn[r]==j&&r!=rs1[i-1]&&r!=rs2[i-1]&&r!=rt1[i-1]&&r!=rt2[i-1]) {
          for(hr=0;hr<HOST_REGS;hr++) {
            if(hr!=HOST_CCREG||hsn[CCREG]>2) {
              if(cur->regmap[hr]==r+64) {
                cur->regmap[hr]=reg;
                cur->dirty&=~(1<<hr);
                cur->isconst&=~(1<<hr);
                return;
              }
            }
          }
          for(hr=0;hr<HOST_REGS;hr++) {
            if(hr!=HOST_CCREG||hsn[CCREG]>2) {
              if(cur->regmap[hr]==r) {
                cur->regmap[hr]=reg;
                cur->dirty&=~(1<<hr);
                cur->isconst&=~(1<<hr);
                return;
              }
            }
          }
        }
      }
    }
  }
  for(j=10;j>=0;j--)
  {
    for(r=1;r<=MAXREG;r++)
    {
      if(hsn[r]==j) {
        for(hr=0;hr<HOST_REGS;hr++) {
          if(cur->regmap[hr]==r+64) {
            cur->regmap[hr]=reg;
            cur->dirty&=~(1<<hr);
            cur->isconst&=~(1<<hr);
            return;
          }
        }
        for(hr=0;hr<HOST_REGS;hr++) {
          if(cur->regmap[hr]==r) {
            cur->regmap[hr]=reg;
            cur->dirty&=~(1<<hr);
            cur->isconst&=~(1<<hr);
            return;
          }
        }
      }
    }
  }
  printf("This shouldn't happen");exit(1);
}
// Allocate a specific x86 register.
void alloc_x86_reg(struct regstat *cur,int i,signed char reg,char hr)
{
  int n;
  
  // see if it's already allocated (and dealloc it)
  for(n=0;n<HOST_REGS;n++)
  {
    if(n!=ESP&&cur->regmap[n]==reg) {cur->regmap[n]=-1;}
  }
  
  cur->regmap[hr]=reg;
  cur->dirty&=~(1<<hr);
  cur->isconst&=~(1<<hr);
}

// Alloc cycle count into dedicated register
alloc_cc(struct regstat *cur,int i)
{
  alloc_x86_reg(cur,i,CCREG,ESI);
}

/* Special alloc */

void multdiv_alloc_x86(struct regstat *current,int i)
{
  //  case 0x18: MULT
  //  case 0x19: MULTU
  //  case 0x1A: DIV
  //  case 0x1B: DIVU
  //  case 0x1C: DMULT
  //  case 0x1D: DMULTU
  //  case 0x1E: DDIV
  //  case 0x1F: DDIVU
  clear_const(current,rs1[i]);
  clear_const(current,rs2[i]);
  if(rs1[i]&&rs2[i])
  {
    if((opcode2[i]&4)==0) // 32-bit
    {
      current->u&=~(1LL<<HIREG);
      current->u&=~(1LL<<LOREG);
      alloc_x86_reg(current,i,HIREG,EDX);
      alloc_x86_reg(current,i,LOREG,EAX);
      alloc_reg(current,i,rs1[i]);
      alloc_reg(current,i,rs2[i]);
      current->is32|=1LL<<HIREG;
      current->is32|=1LL<<LOREG;
      dirty_reg(current,HIREG);
      dirty_reg(current,LOREG);
    }
    else // 64-bit
    {
      alloc_x86_reg(current,i,HIREG|64,EDX);
      alloc_x86_reg(current,i,HIREG,EAX);
      alloc_reg64(current,i,rs1[i]);
      alloc_reg64(current,i,rs2[i]);
      alloc_all(current,i);
      current->is32&=~(1LL<<HIREG);
      current->is32&=~(1LL<<LOREG);
      dirty_reg(current,HIREG);
      dirty_reg(current,LOREG);
    }
  }
  else
  {
    // Multiply by zero is zero.
    // MIPS does not have a divide by zero exception.
    // The result is undefined, we return zero.
    alloc_reg(current,i,HIREG);
    alloc_reg(current,i,LOREG);
    current->is32|=1LL<<HIREG;
    current->is32|=1LL<<LOREG;
    dirty_reg(current,HIREG);
    dirty_reg(current,LOREG);
  }
}
#define multdiv_alloc multdiv_alloc_x86

/* Assembler */

char regname[8][4] = {
 "eax",
 "ecx",
 "edx",
 "ebx",
 "esp",
 "ebp",
 "esi",
 "edi"};

void output_byte(u_char byte)
{
  *(out++)=byte;
}
void output_modrm(u_char mod,u_char rm,u_char ext)
{
  assert(mod<4);
  assert(rm<8);
  assert(ext<8);
  u_char byte=(mod<<6)|(ext<<3)|rm;
  *(out++)=byte;
}
void output_sib(u_char scale,u_char index,u_char base)
{
  assert(scale<4);
  assert(index<8);
  assert(base<8);
  u_char byte=(scale<<6)|(index<<3)|base;
  *(out++)=byte;
}
void output_w32(u_int word)
{
  *((u_int *)out)=word;
  out+=4;
}

void emit_mov(int rs,int rt)
{
  assem_debug("mov %%%s,%%%s\n",regname[rs],regname[rt]);
  output_byte(0x89);
  output_modrm(3,rt,rs);
}

void emit_add(int rs1,int rs2,int rt)
{
  if(rs1==rt) {
    assem_debug("add %%%s,%%%s\n",regname[rs2],regname[rs1]);
    output_byte(0x01);
    output_modrm(3,rs1,rs2);
  }else if(rs2==rt) {
    assem_debug("add %%%s,%%%s\n",regname[rs1],regname[rs2]);
    output_byte(0x01);
    output_modrm(3,rs2,rs1);
  }else {
    assem_debug("lea (%%%s,%%%s),%%%s\n",regname[rs1],regname[rs2],regname[rt]);
    output_byte(0x8D);
    if(rs1!=EBP) {
      output_modrm(0,4,rt);
      output_sib(0,rs2,rs1);
    }else if(rs2!=EBP) {
      output_modrm(0,4,rt);
      output_sib(0,rs1,rs2);
    }else /* lea 0(,%ebp,2) */{
      output_modrm(0,4,rt);
      output_sib(1,EBP,5);
      output_w32(0);
    }
  }
}

void emit_adds(int rs1,int rs2,int rt)
{
  emit_add(rs1,rs2,rt);
}

void emit_lea8(int rs1,int rt)
{
  assem_debug("lea 0(%%%s,8),%%%s\n",regname[rs1],regname[rt]);
  output_byte(0x8D);
  output_modrm(0,4,rt);
  output_sib(3,rs1,5);
  output_w32(0);
}
void emit_leairrx1(int imm,int rs1,int rs2,int rt)
{
  assem_debug("lea %x(%%%s,%%%s,1),%%%s\n",imm,regname[rs1],regname[rs2],regname[rt]);
  output_byte(0x8D);
  if(imm!=0||rs1==EBP) {
    output_modrm(2,4,rt);
    output_sib(0,rs2,rs1);
    output_w32(imm);
  }else{
    output_modrm(0,4,rt);
    output_sib(0,rs2,rs1);
  }
}
void emit_leairrx4(int imm,int rs1,int rs2,int rt)
{
  assem_debug("lea %x(%%%s,%%%s,4),%%%s\n",imm,regname[rs1],regname[rs2],regname[rt]);
  output_byte(0x8D);
  if(imm!=0||rs1==EBP) {
    output_modrm(2,4,rt);
    output_sib(2,rs2,rs1);
    output_w32(imm);
  }else{
    output_modrm(0,4,rt);
    output_sib(2,rs2,rs1);
  }
}

void emit_neg(int rs, int rt)
{
  if(rs!=rt) emit_mov(rs,rt);
  assem_debug("neg %%%s\n",regname[rt]);
  output_byte(0xF7);
  output_modrm(3,rt,3);
}

void emit_negs(int rs, int rt)
{
  emit_neg(rs,rt);
}

void emit_sub(int rs1,int rs2,int rt)
{
  if(rs1==rt) {
    assem_debug("sub %%%s,%%%s\n",regname[rs2],regname[rs1]);
    output_byte(0x29);
    output_modrm(3,rs1,rs2);
  } else if(rs2==rt) {
    emit_neg(rs2,rs2);
    emit_add(rs2,rs1,rs2);
  } else {
    emit_mov(rs1,rt);
    emit_sub(rt,rs2,rt);
  }
}

void emit_subs(int rs1,int rs2,int rt)
{
  emit_sub(rs1,rs2,rt);
}

void emit_zeroreg(int rt)
{
  output_byte(0x31);
  output_modrm(3,rt,rt);
  assem_debug("xor %%%s,%%%s\n",regname[rt],regname[rt]);
}

void emit_loadreg(int r, int hr)
{
  if((r&63)==0)
    emit_zeroreg(hr);
  else {
    int addr=((int)reg)+((r&63)<<3)+((r&64)>>4);
    if((r&63)==HIREG) addr=(int)&hi+((r&64)>>4);
    if((r&63)==LOREG) addr=(int)&lo+((r&64)>>4);
    if(r==CCREG) addr=(int)&cycle_count;
    if(r==CSREG) addr=(int)&Status;
    if(r==FSREG) addr=(int)&FCR31;
    assem_debug("mov %x+%d,%%%s\n",addr,r,regname[hr]);
    output_byte(0x8B);
    output_modrm(0,5,hr);
    output_w32(addr);
  }
}
void emit_storereg(int r, int hr)
{
  int addr=((int)reg)+((r&63)<<3)+((r&64)>>4);
  if((r&63)==HIREG) addr=(int)&hi+((r&64)>>4);
  if((r&63)==LOREG) addr=(int)&lo+((r&64)>>4);
  if(r==CCREG) addr=(int)&cycle_count;
  if(r==FSREG) addr=(int)&FCR31;
  assem_debug("mov %%%s,%x+%d\n",regname[hr],addr,r);
  output_byte(0x89);
  output_modrm(0,5,hr);
  output_w32(addr);
}

void emit_test(int rs, int rt)
{
  assem_debug("test %%%s,%%%s\n",regname[rs],regname[rt]);
  output_byte(0x85);
  output_modrm(3,rs,rt);
}

void emit_testimm(int rs,int imm)
{
  assem_debug("test $0x%x,%%%s\n",imm,regname[rs]);
  if(imm<128&&imm>=-128&&rs<4) {
    output_byte(0xF6);
    output_modrm(3,rs,0);
    output_byte(imm);
  }
  else
  {
    output_byte(0xF7);
    output_modrm(3,rs,0);
    output_w32(imm);
  }
}

void emit_not(int rs,int rt)
{
  if(rs!=rt) emit_mov(rs,rt);
  assem_debug("not %%%s\n",regname[rt]);
  output_byte(0xF7);
  output_modrm(3,rt,2);
}

void emit_and(u_int rs1,u_int rs2,u_int rt)
{
  assert(rs1<8);
  assert(rs2<8);
  assert(rt<8);
  if(rs1==rt) {
    assem_debug("and %%%s,%%%s\n",regname[rs2],regname[rt]);
    output_byte(0x21);
    output_modrm(3,rs1,rs2);
  }
  else
  if(rs2==rt) {
    assem_debug("and %%%s,%%%s\n",regname[rs1],regname[rt]);
    output_byte(0x21);
    output_modrm(3,rs2,rs1);
  }
  else {
    emit_mov(rs1,rt);
    emit_and(rt,rs2,rt);
  }
}

void emit_or(u_int rs1,u_int rs2,u_int rt)
{
  assert(rs1<8);
  assert(rs2<8);
  assert(rt<8);
  if(rs1==rt) {
    assem_debug("or %%%s,%%%s\n",regname[rs2],regname[rt]);
    output_byte(0x09);
    output_modrm(3,rs1,rs2);
  }
  else
  if(rs2==rt) {
    assem_debug("or %%%s,%%%s\n",regname[rs1],regname[rt]);
    output_byte(0x09);
    output_modrm(3,rs2,rs1);
  }
  else {
    emit_mov(rs1,rt);
    emit_or(rt,rs2,rt);
  }
}
void emit_or_and_set_flags(int rs1,int rs2,int rt)
{
  emit_or(rs1,rs2,rt);
}

void emit_xor(u_int rs1,u_int rs2,u_int rt)
{
  assert(rs1<8);
  assert(rs2<8);
  assert(rt<8);
  if(rs1==rt) {
    assem_debug("xor %%%s,%%%s\n",regname[rs2],regname[rt]);
    output_byte(0x31);
    output_modrm(3,rs1,rs2);
  }
  else
  if(rs2==rt) {
    assem_debug("xor %%%s,%%%s\n",regname[rs1],regname[rt]);
    output_byte(0x31);
    output_modrm(3,rs2,rs1);
  }
  else {
    emit_mov(rs1,rt);
    emit_xor(rt,rs2,rt);
  }
}

void emit_movimm(int imm,u_int rt)
{
  assem_debug("mov $%d,%%%s\n",imm,regname[rt]);
  assert(rt<8);
  output_byte(0xB8+rt);
  output_w32(imm);
}

void emit_addimm(int rs,int imm,int rt)
{
  if(rs==rt) {
    if(imm!=0) {
      assem_debug("add $%d,%%%s\n",imm,regname[rt]);
      if(imm<128&&imm>=-128) {
        output_byte(0x83);
        output_modrm(3,rt,0);
        output_byte(imm);
      }
      else
      {
        output_byte(0x81);
        output_modrm(3,rt,0);
        output_w32(imm);
      }
    }
  }
  else {
    if(imm!=0) {
      assem_debug("lea %d(%%%s),%%%s\n",imm,regname[rs],regname[rt]);
      output_byte(0x8D);
      if(imm<128&&imm>=-128) {
        output_modrm(1,rs,rt);
        output_byte(imm);
      }else{
        output_modrm(2,rs,rt);
        output_w32(imm);
      }
    }else{
      emit_mov(rs,rt);
    }
  }
}

void emit_addimm_and_set_flags(int imm,int rt)
{
  assem_debug("add $%d,%%%s\n",imm,regname[rt]);
  if(imm<128&&imm>=-128) {
    output_byte(0x83);
    output_modrm(3,rt,0);
    output_byte(imm);
  }
  else
  {
    output_byte(0x81);
    output_modrm(3,rt,0);
    output_w32(imm);
  }
}
void emit_addimm_no_flags(int imm,int rt)
{
  if(imm!=0) {
    assem_debug("lea %d(%%%s),%%%s\n",imm,regname[rt],regname[rt]);
    output_byte(0x8D);
    if(imm<128&&imm>=-128) {
      output_modrm(1,rt,rt);
      output_byte(imm);
    }else{
      output_modrm(2,rt,rt);
      output_w32(imm);
    }
  }
}

void emit_adcimm(int imm,u_int rt)
{
  assem_debug("adc $%d,%%%s\n",imm,regname[rt]);
  assert(rt<8);
  if(imm<128&&imm>=-128) {
    output_byte(0x83);
    output_modrm(3,rt,2);
    output_byte(imm);
  }
  else
  {
    output_byte(0x81);
    output_modrm(3,rt,2);
    output_w32(imm);
  }
}
void emit_sbbimm(int imm,u_int rt)
{
  assem_debug("sbb $%d,%%%s\n",imm,regname[rt]);
  assert(rt<8);
  if(imm<128&&imm>=-128) {
    output_byte(0x83);
    output_modrm(3,rt,3);
    output_byte(imm);
  }
  else
  {
    output_byte(0x81);
    output_modrm(3,rt,3);
    output_w32(imm);
  }
}

void emit_addimm64_32(int rsh,int rsl,int imm,int rth,int rtl)
{
  if(rsh==rth&&rsl==rtl) {
    assem_debug("add $%d,%%%s\n",imm,regname[rtl]);
    if(imm<128&&imm>=-128) {
      output_byte(0x83);
      output_modrm(3,rtl,0);
      output_byte(imm);
    }
    else
    {
      output_byte(0x81);
      output_modrm(3,rtl,0);
      output_w32(imm);
    }
    assem_debug("adc $%d,%%%s\n",imm>>31,regname[rth]);
    output_byte(0x83);
    output_modrm(3,rth,2);
    output_byte(imm>>31);
  }
  else {
    emit_mov(rsh,rth);
    emit_mov(rsl,rtl);
    emit_addimm64_32(rth,rtl,imm,rth,rtl);
  }
}

void emit_sbb(int rs1,int rs2)
{
  assem_debug("sbb %%%s,%%%s\n",regname[rs2],regname[rs1]);
  output_byte(0x19);
  output_modrm(3,rs1,rs2);
}

void emit_andimm(int rs,int imm,int rt)
{
  if(rs==rt) {
    assem_debug("and $%d,%%%s\n",imm,regname[rt]);
    if(imm<128&&imm>=-128) {
      output_byte(0x83);
      output_modrm(3,rt,4);
      output_byte(imm);
    }
    else
    {
      output_byte(0x81);
      output_modrm(3,rt,4);
      output_w32(imm);
    }
  }
  else {
    emit_mov(rs,rt);
    emit_andimm(rt,imm,rt);
  }
}

void emit_orimm(int rs,int imm,int rt)
{
  if(rs==rt) {
    assem_debug("or $%d,%%%s\n",imm,regname[rt]);
    if(imm<128&&imm>=-128) {
      output_byte(0x83);
      output_modrm(3,rt,1);
      output_byte(imm);
    }
    else
    {
      output_byte(0x81);
      output_modrm(3,rt,1);
      output_w32(imm);
    }
  }
  else {
    emit_mov(rs,rt);
    emit_orimm(rt,imm,rt);
  }
}

void emit_xorimm(int rs,int imm,int rt)
{
  if(rs==rt) {
    assem_debug("xor $%d,%%%s\n",imm,regname[rt]);
    if(imm<128&&imm>=-128) {
      output_byte(0x83);
      output_modrm(3,rt,6);
      output_byte(imm);
    }
    else
    {
      output_byte(0x81);
      output_modrm(3,rt,6);
      output_w32(imm);
    }
  }
  else {
    emit_mov(rs,rt);
    emit_xorimm(rt,imm,rt);
  }
}

void emit_shlimm(int rs,u_int imm,int rt)
{
  if(rs==rt) {
    assem_debug("shl %%%s,%d\n",regname[rt],imm);
    assert(imm>0);
    if(imm==1) output_byte(0xD1);
    else output_byte(0xC1);
    output_modrm(3,rt,4);
    if(imm>1) output_byte(imm);
  }
  else {
    emit_mov(rs,rt);
    emit_shlimm(rt,imm,rt);
  }
}

void emit_shrimm(int rs,u_int imm,int rt)
{
  if(rs==rt) {
    assem_debug("shr %%%s,%d\n",regname[rt],imm);
    assert(imm>0);
    if(imm==1) output_byte(0xD1);
    else output_byte(0xC1);
    output_modrm(3,rt,5);
    if(imm>1) output_byte(imm);
  }
  else {
    emit_mov(rs,rt);
    emit_shrimm(rt,imm,rt);
  }
}

void emit_sarimm(int rs,u_int imm,int rt)
{
  if(rs==rt) {
    assem_debug("sar %%%s,%d\n",regname[rt],imm);
    assert(imm>0);
    if(imm==1) output_byte(0xD1);
    else output_byte(0xC1);
    output_modrm(3,rt,7);
    if(imm>1) output_byte(imm);
  }
  else {
    emit_mov(rs,rt);
    emit_sarimm(rt,imm,rt);
  }
}

void emit_rorimm(int rs,u_int imm,int rt)
{
  if(rs==rt) {
    assem_debug("ror %%%s,%d\n",regname[rt],imm);
    assert(imm>0);
    if(imm==1) output_byte(0xD1);
    else output_byte(0xC1);
    output_modrm(3,rt,1);
    if(imm>1) output_byte(imm);
  }
  else {
    emit_mov(rs,rt);
    emit_sarimm(rt,imm,rt);
  }
}

void emit_shldimm(int rs,int rs2,u_int imm,int rt)
{
  if(rs==rt) {
    assem_debug("shld %%%s,%%%s,%d\n",regname[rt],regname[rs2],imm);
    assert(imm>0);
    output_byte(0x0F);
    output_byte(0xA4);
    output_modrm(3,rt,rs2);
    output_byte(imm);
  }
  else {
    emit_mov(rs,rt);
    emit_shldimm(rt,rs2,imm,rt);
  }
}

void emit_shrdimm(int rs,int rs2,u_int imm,int rt)
{
  if(rs==rt) {
    assem_debug("shrd %%%s,%%%s,%d\n",regname[rt],regname[rs2],imm);
    assert(imm>0);
    output_byte(0x0F);
    output_byte(0xAC);
    output_modrm(3,rt,rs2);
    output_byte(imm);
  }
  else {
    emit_mov(rs,rt);
    emit_shrdimm(rt,rs2,imm,rt);
  }
}

void emit_shlcl(int r)
{
  assem_debug("shl %%%s,%%cl\n",regname[r]);
  output_byte(0xD3);
  output_modrm(3,r,4);
}
void emit_shrcl(int r)
{
  assem_debug("shr %%%s,%%cl\n",regname[r]);
  output_byte(0xD3);
  output_modrm(3,r,5);
}
void emit_sarcl(int r)
{
  assem_debug("sar %%%s,%%cl\n",regname[r]);
  output_byte(0xD3);
  output_modrm(3,r,7);
}

void emit_shldcl(int r1,int r2)
{
  assem_debug("shld %%%s,%%%s,%%cl\n",regname[r1],regname[r2]);
  output_byte(0x0F);
  output_byte(0xA5);
  output_modrm(3,r1,r2);
}
void emit_shrdcl(int r1,int r2)
{
  assem_debug("shrd %%%s,%%%s,%%cl\n",regname[r1],regname[r2]);
  output_byte(0x0F);
  output_byte(0xAD);
  output_modrm(3,r1,r2);
}

void emit_cmpimm(int rs,int imm)
{
  assem_debug("cmp $%d,%%%s\n",imm,regname[rs]);
  if(imm<128&&imm>=-128) {
    output_byte(0x83);
    output_modrm(3,rs,7);
    output_byte(imm);
  }
  else
  {
    output_byte(0x81);
    output_modrm(3,rs,7);
    output_w32(imm);
  }
}

void emit_cmovne(u_int *addr,int rt)
{
  assem_debug("cmovne %x,%%%s",(int)addr,regname[rt]);
  if(addr==&const_zero) assem_debug(" [zero]\n");
  else if(addr==&const_one) assem_debug(" [one]\n");
  else assem_debug("\n");
  output_byte(0x0F);
  output_byte(0x45);
  output_modrm(0,5,rt);
  output_w32((int)addr);
}
void emit_cmovl(u_int *addr,int rt)
{
  assem_debug("cmovl %x,%%%s",(int)addr,regname[rt]);
  if(addr==&const_zero) assem_debug(" [zero]\n");
  else if(addr==&const_one) assem_debug(" [one]\n");
  else assem_debug("\n");
  output_byte(0x0F);
  output_byte(0x4C);
  output_modrm(0,5,rt);
  output_w32((int)addr);
}
void emit_cmovs(u_int *addr,int rt)
{
  assem_debug("cmovs %x,%%%s",(int)addr,regname[rt]);
  if(addr==&const_zero) assem_debug(" [zero]\n");
  else if(addr==&const_one) assem_debug(" [one]\n");
  else assem_debug("\n");
  output_byte(0x0F);
  output_byte(0x48);
  output_modrm(0,5,rt);
  output_w32((int)addr);
}
void emit_cmovne_reg(int rs,int rt)
{
  assem_debug("cmovne %%%s,%%%s\n",regname[rs],regname[rt]);
  output_byte(0x0F);
  output_byte(0x45);
  output_modrm(3,rs,rt);
}
void emit_cmovl_reg(int rs,int rt)
{
  assem_debug("cmovl %%%s,%%%s\n",regname[rs],regname[rt]);
  output_byte(0x0F);
  output_byte(0x4C);
  output_modrm(3,rs,rt);
}
void emit_cmovs_reg(int rs,int rt)
{
  assem_debug("cmovs %%%s,%%%s\n",regname[rs],regname[rt]);
  output_byte(0x0F);
  output_byte(0x48);
  output_modrm(3,rs,rt);
}
void emit_cmovnc_reg(int rs,int rt)
{
  assem_debug("cmovae %%%s,%%%s\n",regname[rs],regname[rt]);
  output_byte(0x0F);
  output_byte(0x43);
  output_modrm(3,rs,rt);
}
void emit_cmova_reg(int rs,int rt)
{
  assem_debug("cmova %%%s,%%%s\n",regname[rs],regname[rt]);
  output_byte(0x0F);
  output_byte(0x47);
  output_modrm(3,rs,rt);
}
void emit_cmovp_reg(int rs,int rt)
{
  assem_debug("cmovp %%%s,%%%s\n",regname[rs],regname[rt]);
  output_byte(0x0F);
  output_byte(0x4A);
  output_modrm(3,rs,rt);
}
void emit_cmovnp_reg(int rs,int rt)
{
  assem_debug("cmovnp %%%s,%%%s\n",regname[rs],regname[rt]);
  output_byte(0x0F);
  output_byte(0x4B);
  output_modrm(3,rs,rt);
}
void emit_setl(int rt)
{
  assem_debug("setl %%%s\n",regname[rt]);
  output_byte(0x0F);
  output_byte(0x9C);
  output_modrm(3,rt,2);
}
void emit_movzbl_reg(int rs, int rt)
{
  assem_debug("movzbl %%%s,%%%s\n",regname[rs]+1,regname[rt]);
  output_byte(0x0F);
  output_byte(0xB6);
  output_modrm(3,rs,rt);
}

void emit_slti32(int rs,int imm,int rt)
{
  if(rs!=rt) emit_zeroreg(rt);
  emit_cmpimm(rs,imm);
  if(rt<4) {
    emit_setl(rt);
    if(rs==rt) emit_movzbl_reg(rt,rt);
  }
  else
  {
    if(rs==rt) emit_movimm(0,rt);
    emit_cmovl(&const_one,rt);
  }
}
void emit_sltiu32(int rs,int imm,int rt)
{
  if(rs!=rt) emit_zeroreg(rt);
  emit_cmpimm(rs,imm);
  if(rs==rt) emit_movimm(0,rt);
  emit_adcimm(0,rt);
}
void emit_slti64_32(int rsh,int rsl,int imm,int rt)
{
  assert(rsh!=rt);
  emit_slti32(rsl,imm,rt);
  if(imm>=0)
  {
    emit_test(rsh,rsh);
    emit_cmovne(&const_zero,rt);
    emit_cmovs(&const_one,rt);
  }
  else
  {
    emit_cmpimm(rsh,-1);
    emit_cmovne(&const_zero,rt);
    emit_cmovl(&const_one,rt);
  }
}
void emit_sltiu64_32(int rsh,int rsl,int imm,int rt)
{
  assert(rsh!=rt);
  emit_sltiu32(rsl,imm,rt);
  if(imm>=0)
  {
    emit_test(rsh,rsh);
    emit_cmovne(&const_zero,rt);
  }
  else
  {
    emit_cmpimm(rsh,-1);
    emit_cmovne(&const_one,rt);
  }
}

void emit_cmp(int rs,int rt)
{
  assem_debug("cmp %%%s,%%%s\n",regname[rt],regname[rs]);
  output_byte(0x39);
  output_modrm(3,rs,rt);
}
void emit_set_gz32(int rs, int rt)
{
  //assem_debug("set_gz32\n");
  emit_cmpimm(rs,1);
  emit_movimm(1,rt);
  emit_cmovl(&const_zero,rt);
}
void emit_set_nz32(int rs, int rt)
{
  //assem_debug("set_nz32\n");
  emit_cmpimm(rs,1);
  emit_movimm(1,rt);
  emit_sbbimm(0,rt);
}
void emit_set_gz64_32(int rsh, int rsl, int rt)
{
  //assem_debug("set_gz64\n");
  emit_set_gz32(rsl,rt);
  emit_test(rsh,rsh);
  emit_cmovne(&const_one,rt);
  emit_cmovs(&const_zero,rt);
}
void emit_set_nz64_32(int rsh, int rsl, int rt)
{
  //assem_debug("set_nz64\n");
  emit_or_and_set_flags(rsh,rsl,rt);
  emit_cmovne(&const_one,rt);
}
void emit_set_if_less32(int rs1, int rs2, int rt)
{
  //assem_debug("set if less (%%%s,%%%s),%%%s\n",regname[rs1],regname[rs2],regname[rt]);
  if(rs1!=rt&&rs2!=rt) emit_zeroreg(rt);
  emit_cmp(rs1,rs2);
  if(rs1==rt||rs2==rt) emit_movimm(0,rt);
  emit_cmovl(&const_one,rt);
}
void emit_set_if_carry32(int rs1, int rs2, int rt)
{
  //assem_debug("set if carry (%%%s,%%%s),%%%s\n",regname[rs1],regname[rs2],regname[rt]);
  if(rs1!=rt&&rs2!=rt) emit_zeroreg(rt);
  emit_cmp(rs1,rs2);
  if(rs1==rt||rs2==rt) emit_movimm(0,rt);
  emit_adcimm(0,rt);
}
void emit_set_if_less64_32(int u1, int l1, int u2, int l2, int rt)
{
  //assem_debug("set if less64 (%%%s,%%%s,%%%s,%%%s),%%%s\n",regname[u1],regname[l1],regname[u2],regname[l2],regname[rt]);
  assert(u1!=rt);
  assert(u2!=rt);
  emit_cmp(l1,l2);
  emit_mov(u1,rt);
  emit_sbb(rt,u2);
  emit_movimm(0,rt);
  emit_cmovl(&const_one,rt);
}
void emit_set_if_carry64_32(int u1, int l1, int u2, int l2, int rt)
{
  //assem_debug("set if carry64 (%%%s,%%%s,%%%s,%%%s),%%%s\n",regname[u1],regname[l1],regname[u2],regname[l2],regname[rt]);
  assert(u1!=rt);
  assert(u2!=rt);
  emit_cmp(l1,l2);
  emit_mov(u1,rt);
  emit_sbb(rt,u2);
  emit_movimm(0,rt);
  emit_adcimm(0,rt);
}

void emit_call(int a)
{
  assem_debug("call %x (%x+%x)\n",a,(int)out+5,a-(int)out-5);
  output_byte(0xe8);
  output_w32(a-(int)out-4);
}
void emit_jmp(int a)
{
  assem_debug("jmp %x (%x+%x)\n",a,(int)out+5,a-(int)out-5);
  output_byte(0xe9);
  output_w32(a-(int)out-4);
}
void emit_jne(int a)
{
  assem_debug("jne %x\n",a);
  output_byte(0x0f);
  output_byte(0x85);
  output_w32(a-(int)out-4);
}
void emit_jeq(int a)
{
  assem_debug("jeq %x\n",a);
  output_byte(0x0f);
  output_byte(0x84);
  output_w32(a-(int)out-4);
}
void emit_js(int a)
{
  assem_debug("js %x\n",a);
  output_byte(0x0f);
  output_byte(0x88);
  output_w32(a-(int)out-4);
}
void emit_jns(int a)
{
  assem_debug("jns %x\n",a);
  output_byte(0x0f);
  output_byte(0x89);
  output_w32(a-(int)out-4);
}
void emit_jl(int a)
{
  assem_debug("jl %x\n",a);
  output_byte(0x0f);
  output_byte(0x8c);
  output_w32(a-(int)out-4);
}
void emit_jge(int a)
{
  assem_debug("jge %x\n",a);
  output_byte(0x0f);
  output_byte(0x8d);
  output_w32(a-(int)out-4);
}
void emit_jno(int a)
{
  assem_debug("jno %x\n",a);
  output_byte(0x0f);
  output_byte(0x81);
  output_w32(a-(int)out-4);
}
void emit_jc(int a)
{
  assem_debug("jc %x\n",a);
  output_byte(0x0f);
  output_byte(0x82);
  output_w32(a-(int)out-4);
}

void emit_pushimm(int imm)
{
  assem_debug("push $%x\n",imm);
  output_byte(0x68);
  output_w32(imm);
}
void emit_pushmem(int addr)
{
  assem_debug("push *%x\n",addr);
  output_byte(0xFF);
  output_modrm(0,5,6);
  output_w32(addr);
}
void emit_pusha()
{
  assem_debug("pusha\n");
  output_byte(0x60);
}
void emit_popa()
{
  assem_debug("popa\n");
  output_byte(0x61);
}
void emit_pushreg(u_int r)
{
  assem_debug("push %%%s\n",regname[r]);
  assert(r<8);
  output_byte(0x50+r);
}
void emit_popreg(u_int r)
{
  assem_debug("pop %%%s\n",regname[r]);
  assert(r<8);
  output_byte(0x58+r);
}
void emit_callreg(u_int r)
{
  assem_debug("call *%%%s\n",regname[r]);
  assert(r<8);
  output_byte(0xFF);
  output_modrm(3,r,2);
}
void emit_jmpreg(u_int r)
{
  assem_debug("jmp *%%%s\n",regname[r]);
  assert(r<8);
  output_byte(0xFF);
  output_modrm(3,r,4);
}
void emit_jmpmem_indexed(u_int addr,u_int r)
{
  assem_debug("jmp *%x(%%%s)\n",addr,regname[r]);
  assert(r<8);
  output_byte(0xFF);
  output_modrm(2,r,4);
  output_w32(addr);
}

void emit_readword(int addr, int rt)
{
  assem_debug("mov %x,%%%s\n",addr,regname[rt]);
  output_byte(0x8B);
  output_modrm(0,5,rt);
  output_w32(addr);
}
void emit_readword_indexed(int addr, int rs, int rt)
{
  assem_debug("mov %x+%%%s,%%%s\n",addr,regname[rs],regname[rt]);
  output_byte(0x8B);
  if(addr<128&&addr>=-128) {
    output_modrm(1,rs,rt);
    if(rs==ESP) output_sib(0,4,4);
    output_byte(addr);
  }
  else
  {
    output_modrm(2,rs,rt);
    if(rs==ESP) output_sib(0,4,4);
    output_w32(addr);
  }
}
void emit_readword_tlb(int addr, int map, int rt)
{
  if(map<0) emit_readword(addr+(int)rdram-0x80000000, rt);
  else
  {
    assem_debug("mov (%x,%%%s,4),%%%s\n",addr+(int)rdram-0x80000000,regname[map],regname[rt]);
    output_byte(0x8B);
    output_modrm(0,4,rt);
    output_sib(2,map,5);
    output_w32(addr+(int)rdram-0x80000000);
  }
}
void emit_readword_indexed_tlb(int addr, int rs, int map, int rt)
{
  if(map<0) emit_readword_indexed(addr+(int)rdram-0x80000000, rs, rt);
  else {
    assem_debug("mov %x(%%%s,%%%s,4),%%%s\n",addr,regname[rs],regname[map],regname[rt]);
    assert(rs!=ESP);
    output_byte(0x8B);
    if(addr==0&&rs!=EBP) {
      output_modrm(0,4,rt);
      output_sib(2,map,rs);
    }
    else if(addr<128&&addr>=-128) {
      output_modrm(1,4,rt);
      output_sib(2,map,rs);
      output_byte(addr);
    }
    else
    {
      output_modrm(2,4,rt);
      output_sib(2,map,rs);
      output_w32(addr);
    }
  }
}
void emit_movmem_indexedx4(int addr, int rs, int rt)
{
  assem_debug("mov (%x,%%%s,4),%%%s\n",addr,regname[rs],regname[rt]);
  output_byte(0x8B);
  output_modrm(0,4,rt);
  output_sib(2,rs,5);
  output_w32(addr);
}
void emit_readdword_tlb(int addr, int map, int rh, int rl)
{
  if(map<0) {
    if(rh>=0) emit_readword(addr+(int)rdram-0x80000000, rh);
    emit_readword(addr+(int)rdram-0x7FFFFFFC, rl);
  }
  else {
    if(rh>=0) emit_movmem_indexedx4(addr+(int)rdram-0x80000000, map, rh);
    emit_movmem_indexedx4(addr+(int)rdram-0x7FFFFFFC, map, rl);
  }
}
void emit_readdword_indexed_tlb(int addr, int rs, int map, int rh, int rl)
{
  assert(rh!=rs);
  if(rh>=0) emit_readword_indexed_tlb(addr, rs, map, rh);
  emit_readword_indexed_tlb(addr+4, rs, map, rl);
}
void emit_movsbl(int addr, int rt)
{
  assem_debug("movsbl %x,%%%s\n",addr,regname[rt]);
  output_byte(0x0F);
  output_byte(0xBE);
  output_modrm(0,5,rt);
  output_w32(addr);
}
void emit_movsbl_indexed(int addr, int rs, int rt)
{
  assem_debug("movsbl %x+%%%s,%%%s\n",addr,regname[rs],regname[rt]);
  output_byte(0x0F);
  output_byte(0xBE);
  output_modrm(2,rs,rt);
  output_w32(addr);
}
void emit_movsbl_tlb(int addr, int map, int rt)
{
  if(map<0) emit_movsbl(addr+(int)rdram-0x80000000, rt);
  else
  {
    assem_debug("movsbl (%x,%%%s,4),%%%s\n",addr+(int)rdram-0x80000000,regname[map],regname[rt]);
    output_byte(0x0F);
    output_byte(0xBE);
    output_modrm(0,4,rt);
    output_sib(2,map,5);
    output_w32(addr+(int)rdram-0x80000000);
  }
}
void emit_movsbl_indexed_tlb(int addr, int rs, int map, int rt)
{
  if(map<0) emit_movsbl_indexed(addr+(int)rdram-0x80000000, rs, rt);
  else {
    assem_debug("movsbl %x(%%%s,%%%s,4),%%%s\n",addr,regname[rs],regname[map],regname[rt]);
    assert(rs!=ESP);
    output_byte(0x0F);
    output_byte(0xBE);
    if(addr==0&&rs!=EBP) {
      output_modrm(0,4,rt);
      output_sib(2,map,rs);
    }
    else if(addr<128&&addr>=-128) {
      output_modrm(1,4,rt);
      output_sib(2,map,rs);
      output_byte(addr);
    }
    else
    {
      output_modrm(2,4,rt);
      output_sib(2,map,rs);
      output_w32(addr);
    }
  }
}
void emit_movswl(int addr, int rt)
{
  assem_debug("movswl %x,%%%s\n",addr,regname[rt]);
  output_byte(0x0F);
  output_byte(0xBF);
  output_modrm(0,5,rt);
  output_w32(addr);
}
void emit_movswl_indexed(int addr, int rs, int rt)
{
  assem_debug("movswl %x+%%%s,%%%s\n",addr,regname[rs],regname[rt]);
  output_byte(0x0F);
  output_byte(0xBF);
  output_modrm(2,rs,rt);
  output_w32(addr);
}
void emit_movswl_tlb(int addr, int map, int rt)
{
  if(map<0) emit_movswl(addr+(int)rdram-0x80000000, rt);
  else
  {
    assem_debug("movswl (%x,%%%s,4),%%%s\n",addr+(int)rdram-0x80000000,regname[map],regname[rt]);
    output_byte(0x0F);
    output_byte(0xBF);
    output_modrm(0,4,rt);
    output_sib(2,map,5);
    output_w32(addr+(int)rdram-0x80000000);
  }
}
void emit_movzbl(int addr, int rt)
{
  assem_debug("movzbl %x,%%%s\n",addr,regname[rt]);
  output_byte(0x0F);
  output_byte(0xB6);
  output_modrm(0,5,rt);
  output_w32(addr);
}
void emit_movzbl_indexed(int addr, int rs, int rt)
{
  assem_debug("movzbl %x+%%%s,%%%s\n",addr,regname[rs],regname[rt]);
  output_byte(0x0F);
  output_byte(0xB6);
  output_modrm(2,rs,rt);
  output_w32(addr);
}
void emit_movzbl_tlb(int addr, int map, int rt)
{
  if(map<0) emit_movzbl(addr+(int)rdram-0x80000000, rt);
  else
  {
    assem_debug("movzbl (%x,%%%s,4),%%%s\n",addr+(int)rdram-0x80000000,regname[map],regname[rt]);
    output_byte(0x0F);
    output_byte(0xB6);
    output_modrm(0,4,rt);
    output_sib(2,map,5);
    output_w32(addr+(int)rdram-0x80000000);
  }
}
void emit_movzbl_indexed_tlb(int addr, int rs, int map, int rt)
{
  if(map<0) emit_movzbl_indexed(addr+(int)rdram-0x80000000, rs, rt);
  else {
    assem_debug("movzbl %x(%%%s,%%%s,4),%%%s\n",addr,regname[rs],regname[map],regname[rt]);
    assert(rs!=ESP);
    output_byte(0x0F);
    output_byte(0xB6);
    if(addr==0&&rs!=EBP) {
      output_modrm(0,4,rt);
      output_sib(2,map,rs);
    }
    else if(addr<128&&addr>=-128) {
      output_modrm(1,4,rt);
      output_sib(2,map,rs);
      output_byte(addr);
    }
    else
    {
      output_modrm(2,4,rt);
      output_sib(2,map,rs);
      output_w32(addr);
    }
  }
}
void emit_movzwl(int addr, int rt)
{
  assem_debug("movzwl %x,%%%s\n",addr,regname[rt]);
  output_byte(0x0F);
  output_byte(0xB7);
  output_modrm(0,5,rt);
  output_w32(addr);
}
void emit_movzwl_indexed(int addr, int rs, int rt)
{
  assem_debug("movzwl %x+%%%s,%%%s\n",addr,regname[rs],regname[rt]);
  output_byte(0x0F);
  output_byte(0xB7);
  output_modrm(2,rs,rt);
  output_w32(addr);
}
void emit_movzwl_tlb(int addr, int map, int rt)
{
  if(map<0) emit_movzwl(addr+(int)rdram-0x80000000, rt);
  else
  {
    assem_debug("movzwl (%x,%%%s,4),%%%s\n",addr+(int)rdram-0x80000000,regname[map],regname[rt]);
    output_byte(0x0F);
    output_byte(0xB7);
    output_modrm(0,4,rt);
    output_sib(2,map,5);
    output_w32(addr+(int)rdram-0x80000000);
  }
}
void emit_movzwl_reg(int rs, int rt)
{
  assem_debug("movzwl %%%s,%%%s\n",regname[rs]+1,regname[rt]);
  output_byte(0x0F);
  output_byte(0xB7);
  output_modrm(3,rs,rt);
}

void emit_xchg(int rs, int rt)
{
  assem_debug("xchg %%%s,%%%s\n",regname[rs],regname[rt]);
  if(rs==EAX) {
    output_byte(0x90+rt);
  }
  else
  {
    output_byte(0x87);
    output_modrm(3,rs,rt);
  }
}
void emit_writeword(int rt, int addr)
{
  assem_debug("movl %%%s,%x\n",regname[rt],addr);
  output_byte(0x89);
  output_modrm(0,5,rt);
  output_w32(addr);
}
void emit_writeword_indexed(int rt, int addr, int rs)
{
  assem_debug("mov %%%s,%x+%%%s\n",regname[rt],addr,regname[rs]);
  output_byte(0x89);
  if(addr<128&&addr>=-128) {
    output_modrm(1,rs,rt);
    if(rs==ESP) output_sib(0,4,4);
    output_byte(addr);
  }
  else
  {
    output_modrm(2,rs,rt);
    if(rs==ESP) output_sib(0,4,4);
    output_w32(addr);
  }
}
void emit_writeword_tlb(int rt, int addr, int map)
{
  if(map<0) {
    emit_writeword(rt, addr+(int)rdram-0x80000000);
  } else {
    emit_writeword_indexed(rt, addr+(int)rdram-0x80000000, map);
  }
}
void emit_writeword_indexed_tlb(int rt, int addr, int rs, int map, int temp)
{
  if(map<0) emit_writeword_indexed(rt, addr+(int)rdram-0x80000000, rs);
  else {
    assem_debug("mov %%%s,%x(%%%s,%%%s,1)\n",regname[rt],addr,regname[rs],regname[map]);
    assert(rs!=ESP);
    output_byte(0x89);
    if(addr==0&&rs!=EBP) {
      output_modrm(0,4,rt);
      output_sib(0,map,rs);
    }
    else if(addr<128&&addr>=-128) {
      output_modrm(1,4,rt);
      output_sib(0,map,rs);
      output_byte(addr);
    }
    else
    {
      output_modrm(2,4,rt);
      output_sib(0,map,rs);
      output_w32(addr);
    }
  }
}
void emit_writedword_tlb(int rh, int rl, int addr, int map)
{
  assert(rh>=0);
  if(map<0) {
    emit_writeword(rh, addr+(int)rdram-0x80000000);
    emit_writeword(rl, addr+(int)rdram-0x7FFFFFFC);
  }
  else {
    emit_writeword_indexed(rh, addr+(int)rdram-0x80000000, map);
    emit_writeword_indexed(rl, addr+(int)rdram-0x7FFFFFFC, map);
  }
}
void emit_writedword_indexed_tlb(int rh, int rl, int addr, int rs, int map, int temp)
{
  assert(rh>=0);
  emit_writeword_indexed_tlb(rh, addr, rs, map, temp);
  emit_writeword_indexed_tlb(rl, addr+4, rs, map, temp);
}
void emit_writehword(int rt, int addr)
{
  assem_debug("movw %%%s,%x\n",regname[rt]+1,addr);
  output_byte(0x66);
  output_byte(0x89);
  output_modrm(0,5,rt);
  output_w32(addr);
}
void emit_writehword_indexed(int rt, int addr, int rs)
{
  assem_debug("movw %%%s,%x+%%%s\n",regname[rt]+1,addr,regname[rs]);
  output_byte(0x66);
  output_byte(0x89);
  if(addr<128&&addr>=-128) {
    output_modrm(1,rs,rt);
    output_byte(addr);
  }
  else
  {
    output_modrm(2,rs,rt);
    output_w32(addr);
  }
}
void emit_writehword_tlb(int rt, int addr, int map)
{
  if(map<0) {
    emit_writehword(rt, addr+(int)rdram-0x80000000);
  } else {
    emit_writehword_indexed(rt, addr+(int)rdram-0x80000000, map);
  }
}
void emit_writebyte(int rt, int addr)
{
  if(rt<4) {
    assem_debug("movb %%%cl,%x\n",regname[rt][1],addr);
    output_byte(0x88);
    output_modrm(0,5,rt);
    output_w32(addr);
  }
  else
  {
    emit_xchg(EAX,rt);
    emit_writebyte(EAX,addr);
    emit_xchg(EAX,rt);
  }
}
void emit_writebyte_indexed(int rt, int addr, int rs)
{
  if(rt<4) {
    assem_debug("movb %%%cl,%x+%%%s\n",regname[rt][1],addr,regname[rs]);
    output_byte(0x88);
    if(addr<128&&addr>=-128) {
      output_modrm(1,rs,rt);
      output_byte(addr);
    }
    else
    {
      output_modrm(2,rs,rt);
      output_w32(addr);
    }
  }
  else
  {
    emit_xchg(EAX,rt);
    emit_writebyte_indexed(EAX,addr,rs==EAX?rt:rs);
    emit_xchg(EAX,rt);
  }
}
void emit_writebyte_tlb(int rt, int addr, int map)
{
  if(map<0) {
    emit_writebyte(rt, addr+(int)rdram-0x80000000);
  } else {
    emit_writebyte_indexed(rt, addr+(int)rdram-0x80000000, map);
  }
}
void emit_writebyte_indexed_tlb(int rt, int addr, int rs, int map, int temp)
{
  if(map<0) emit_writebyte_indexed(rt, addr+(int)rdram-0x80000000, rs);
  else
  if(rt<4) {
    assem_debug("movb %%%cl,%x(%%%s,%%%s,1)\n",regname[rt][1],addr,regname[rs],regname[map]);
    assert(rs!=ESP);
    output_byte(0x88);
    if(addr==0&&rs!=EBP) {
      output_modrm(0,4,rt);
      output_sib(0,map,rs);
    }
    else if(addr<128&&addr>=-128) {
      output_modrm(1,4,rt);
      output_sib(0,map,rs);
      output_byte(addr);
    }
    else
    {
      output_modrm(2,4,rt);
      output_sib(0,map,rs);
      output_w32(addr);
    }
  }
  else
  {
    emit_xchg(EAX,rt);
    emit_writebyte_indexed_tlb(EAX,addr,rs==EAX?rt:rs,map==EAX?rt:map,temp);
    emit_xchg(EAX,rt);
  }
}
void emit_writeword_imm(int imm, int addr)
{
  assem_debug("movl $%x,%x\n",imm,addr);
  output_byte(0xC7);
  output_modrm(0,5,0);
  output_w32(addr);
  output_w32(imm);
}
void emit_writeword_imm_esp(int imm, int addr)
{
  assem_debug("mov $%x,%x(%%esp)\n",imm,addr);
  assert(addr>=-128&&addr<128);
  output_byte(0xC7);
  output_modrm(1,4,0);
  output_sib(0,4,4);
  output_byte(addr);
  output_w32(imm);
}
void emit_writebyte_imm(int imm, int addr)
{
  assem_debug("movb $%x,%x\n",imm,addr);
  assert(imm>=-128&&imm<128);
  output_byte(0xC6);
  output_modrm(0,5,0);
  output_w32(addr);
  output_byte(imm);
}
void emit_writebyte_imm_esp(int imm, int addr)
{
  assem_debug("movb $%x,%x(%%esp)\n",imm,addr);
  assert(addr>=-128&&addr<128);
  output_byte(0xC6);
  output_modrm(1,4,0);
  output_sib(0,4,4);
  output_byte(addr);
  output_byte(imm);
}

void emit_mul(int rs)
{
  assem_debug("mul %%%s\n",regname[rs]);
  output_byte(0xF7);
  output_modrm(3,rs,4);
}
void emit_imul(int rs)
{
  assem_debug("imul %%%s\n",regname[rs]);
  output_byte(0xF7);
  output_modrm(3,rs,5);
}
void emit_div(int rs)
{
  assem_debug("div %%%s\n",regname[rs]);
  output_byte(0xF7);
  output_modrm(3,rs,6);
}
void emit_idiv(int rs)
{
  assem_debug("idiv %%%s\n",regname[rs]);
  output_byte(0xF7);
  output_modrm(3,rs,7);
}
void emit_cdq()
{
  assem_debug("cdq\n");
  output_byte(0x99);
}

// Load 2 immediates optimizing for small code size
void emit_mov2imm_compact(int imm1,u_int rt1,int imm2,u_int rt2)
{
  emit_movimm(imm1,rt1);
  if(imm2-imm1<128&&imm2-imm1>=-128) emit_addimm(rt1,imm2-imm1,rt2);
  else emit_movimm(imm2,rt2);
}

// special case for checking pending_exception
void emit_cmpmem_imm_byte(int addr,int imm)
{
  assert(imm<128&&imm>=-127);
  assem_debug("cmpb $%d,%x\n",imm,addr);
  output_byte(0x80);
  output_modrm(0,5,7);
  output_w32(addr);
  output_byte(imm);
}

// special case for checking invalid_code
void emit_cmpmem_indexedsr12_imm(int addr,int r,int imm)
{
  assert(imm<128&&imm>=-127);
  assert(r>=0&&r<8);
  emit_shrimm(r,12,r);
  assem_debug("cmp $%d,%x+%%%s\n",imm,addr,regname[r]);
  output_byte(0x80);
  output_modrm(2,r,7);
  output_w32(addr);
  output_byte(imm);
}

// special case for checking hash_table
void emit_cmpmem_indexed(int addr,int rs,int rt)
{
  assert(rs>=0&&rs<8);
  assert(rt>=0&&rt<8);
  assem_debug("cmp %x+%%%s,%%%s\n",addr,regname[rs],regname[rt]);
  output_byte(0x39);
  output_modrm(2,rs,rt);
  output_w32(addr);
}

// special case for checking memory_map in verify_mapping
void emit_cmpmem(int addr,int rt)
{
  assert(rt>=0&&rt<8);
  assem_debug("cmp %x,%%%s\n",addr,regname[rt]);
  output_byte(0x39);
  output_modrm(0,5,rt);
  output_w32(addr);
}

// Used to preload hash table entries
void emit_prefetch(void *addr)
{
  assem_debug("prefetch %x\n",(int)addr);
  output_byte(0x0F);
  output_byte(0x18);
  output_modrm(0,5,1);
  output_w32((int)addr);
}

/*void emit_submem(int r,int addr)
{
  assert(r>=0&&r<8);
  assem_debug("sub %x,%%%s\n",addr,regname[r]);
  output_byte(0x2B);
  output_modrm(0,5,r);
  output_w32((int)addr);
}*/
void emit_subfrommem(int addr,int r)
{
  assert(r>=0&&r<8);
  assem_debug("sub %%%s,%x\n",regname[r],addr);
  output_byte(0x29);
  output_modrm(0,5,r);
  output_w32((int)addr);
}

void emit_flds(int r)
{
  assem_debug("flds (%%%s)\n",regname[r]);
  output_byte(0xd9);
  if(r!=EBP) output_modrm(0,r,0);
  else {output_modrm(1,EBP,0);output_byte(0);}
}
void emit_fldl(int r)
{
  assem_debug("fldl (%%%s)\n",regname[r]);
  output_byte(0xdd);
  if(r!=EBP) output_modrm(0,r,0);
  else {output_modrm(1,EBP,0);output_byte(0);}
}
void emit_fucomip(u_int r)
{
  assem_debug("fucomip %d\n",r);
  assert(r<8);
  output_byte(0xdf);
  output_byte(0xe8+r);
}
void emit_fchs()
{
  assem_debug("fchs\n");
  output_byte(0xd9);
  output_byte(0xe0);
}
void emit_fabs()
{
  assem_debug("fabs\n");
  output_byte(0xd9);
  output_byte(0xe1);
}
void emit_fsqrt()
{
  assem_debug("fsqrt\n");
  output_byte(0xd9);
  output_byte(0xfa);
}
void emit_fadds(int r)
{
  assem_debug("fadds (%%%s)\n",regname[r]);
  output_byte(0xd8);
  if(r!=EBP) output_modrm(0,r,0);
  else {output_modrm(1,EBP,0);output_byte(0);}
}
void emit_faddl(int r)
{
  assem_debug("faddl (%%%s)\n",regname[r]);
  output_byte(0xdc);
  if(r!=EBP) output_modrm(0,r,0);
  else {output_modrm(1,EBP,0);output_byte(0);}
}
void emit_fadd(int r)
{
  assem_debug("fadd st%d\n",r);
  output_byte(0xd8);
  output_byte(0xc0+r);
}
void emit_fsubs(int r)
{
  assem_debug("fsubs (%%%s)\n",regname[r]);
  output_byte(0xd8);
  if(r!=EBP) output_modrm(0,r,4);
  else {output_modrm(1,EBP,4);output_byte(0);}
}
void emit_fsubl(int r)
{
  assem_debug("fsubl (%%%s)\n",regname[r]);
  output_byte(0xdc);
  if(r!=EBP) output_modrm(0,r,4);
  else {output_modrm(1,EBP,4);output_byte(0);}
}
void emit_fsub(int r)
{
  assem_debug("fsub st%d\n",r);
  output_byte(0xd8);
  output_byte(0xe0+r);
}
void emit_fmuls(int r)
{
  assem_debug("fmuls (%%%s)\n",regname[r]);
  output_byte(0xd8);
  if(r!=EBP) output_modrm(0,r,1);
  else {output_modrm(1,EBP,1);output_byte(0);}
}
void emit_fmull(int r)
{
  assem_debug("fmull (%%%s)\n",regname[r]);
  output_byte(0xdc);
  if(r!=EBP) output_modrm(0,r,1);
  else {output_modrm(1,EBP,1);output_byte(0);}
}
void emit_fmul(int r)
{
  assem_debug("fmul st%d\n",r);
  output_byte(0xd8);
  output_byte(0xc8+r);
}
void emit_fdivs(int r)
{
  assem_debug("fdivs (%%%s)\n",regname[r]);
  output_byte(0xd8);
  if(r!=EBP) output_modrm(0,r,6);
  else {output_modrm(1,EBP,6);output_byte(0);}
}
void emit_fdivl(int r)
{
  assem_debug("fdivl (%%%s)\n",regname[r]);
  output_byte(0xdc);
  if(r!=EBP) output_modrm(0,r,6);
  else {output_modrm(1,EBP,6);output_byte(0);}
}
void emit_fdiv(int r)
{
  assem_debug("fdiv st%d\n",r);
  output_byte(0xd8);
  output_byte(0xf0+r);
}
void emit_fpop()
{
  // fstp st(0)
  assem_debug("fpop\n");
  output_byte(0xdd);
  output_byte(0xd8);
}
void emit_fildl(int r)
{
  assem_debug("fildl (%%%s)\n",regname[r]);
  output_byte(0xdb);
  if(r!=EBP) output_modrm(0,r,0);
  else {output_modrm(1,EBP,0);output_byte(0);}
}
void emit_fildll(int r)
{
  assem_debug("fildll (%%%s)\n",regname[r]);
  output_byte(0xdf);
  if(r!=EBP) output_modrm(0,r,5);
  else {output_modrm(1,EBP,5);output_byte(0);}
}
void emit_fistpl(int r)
{
  assem_debug("fistpl (%%%s)\n",regname[r]);
  output_byte(0xdb);
  if(r!=EBP) output_modrm(0,r,3);
  else {output_modrm(1,EBP,3);output_byte(0);}
}
void emit_fistpll(int r)
{
  assem_debug("fistpll (%%%s)\n",regname[r]);
  output_byte(0xdf);
  if(r!=EBP) output_modrm(0,r,7);
  else {output_modrm(1,EBP,7);output_byte(0);}
}
void emit_fstps(int r)
{
  assem_debug("fstps (%%%s)\n",regname[r]);
  output_byte(0xd9);
  if(r!=EBP) output_modrm(0,r,3);
  else {output_modrm(1,EBP,3);output_byte(0);}
}
void emit_fstpl(int r)
{
  assem_debug("fstpl (%%%s)\n",regname[r]);
  output_byte(0xdd);
  if(r!=EBP) output_modrm(0,r,3);
  else {output_modrm(1,EBP,3);output_byte(0);}
}
void emit_fnstcw_stack()
{
  assem_debug("fnstcw (%%esp)\n");
  output_byte(0xd9);
  output_modrm(0,4,7);
  output_sib(0,4,4);
}
void emit_fldcw_stack()
{
  assem_debug("fldcw (%%esp)\n");
  output_byte(0xd9);
  output_modrm(0,4,5);
  output_sib(0,4,4);
}
void emit_fldcw_indexed(int addr,int r)
{
  assem_debug("fldcw %x(%%%s)\n",addr,regname[r]);
  output_byte(0xd9);
  output_modrm(0,4,5);
  output_sib(1,r,5);
  output_w32(addr);
}
void emit_fldcw(int addr)
{
  assem_debug("fldcw %x\n",addr);
  output_byte(0xd9);
  output_modrm(0,5,5);
  output_w32(addr);
}
void emit_movss_load(u_int addr,u_int ssereg)
{
  assem_debug("movss (%%%s),xmm%d\n",regname[addr],ssereg);
  assert(ssereg<8);
  output_byte(0xf3);
  output_byte(0x0f);
  output_byte(0x10);
  if(addr!=EBP) output_modrm(0,addr,ssereg);
  else {output_modrm(1,EBP,ssereg);output_byte(0);}
}
void emit_movsd_load(u_int addr,u_int ssereg)
{
  assem_debug("movsd (%%%s),xmm%d\n",regname[addr],ssereg);
  assert(ssereg<8);
  output_byte(0xf2);
  output_byte(0x0f);
  output_byte(0x10);
  if(addr!=EBP) output_modrm(0,addr,ssereg);
  else {output_modrm(1,EBP,ssereg);output_byte(0);}
}
void emit_movd_store(u_int ssereg,u_int addr)
{
  assem_debug("movd xmm%d,(%%%s)\n",ssereg,regname[addr]);
  assert(ssereg<8);
  output_byte(0x66);
  output_byte(0x0f);
  output_byte(0x7e);
  if(addr!=EBP) output_modrm(0,addr,ssereg);
  else {output_modrm(1,EBP,ssereg);output_byte(0);}
}
void emit_cvttps2dq(u_int ssereg1,u_int ssereg2)
{
  assem_debug("cvttps2dq xmm%d,xmm%d\n",ssereg1,ssereg2);
  assert(ssereg1<8);
  assert(ssereg2<8);
  output_byte(0xf3);
  output_byte(0x0f);
  output_byte(0x5b);
  output_modrm(3,ssereg1,ssereg2);
}
void emit_cvttpd2dq(u_int ssereg1,u_int ssereg2)
{
  assem_debug("cvttpd2dq xmm%d,xmm%d\n",ssereg1,ssereg2);
  assert(ssereg1<8);
  assert(ssereg2<8);
  output_byte(0x66);
  output_byte(0x0f);
  output_byte(0xe6);
  output_modrm(3,ssereg1,ssereg2);
}

/* Stubs/epilogue */

emit_extjump2(int addr, int target, int linker)
{
  u_char *ptr=(u_char *)addr;
  if(*ptr==0x0f)
  {
    assert(ptr[1]>=0x80&&ptr[1]<=0x8f);
    addr+=2;
  }
  else
  {
    assert(*ptr==0xe8||*ptr==0xe9);
    addr++;
  }
  emit_movimm(target,EAX);
  emit_movimm(addr,EBX);
  //assert(addr>=0x7000000&&addr<0x7FFFFFF);
  //assert((target>=0x80000000&&target<0x80800000)||(target>0xA4000000&&target<0xA4001000));
//DEBUG >
#ifdef DEBUG_CYCLE_COUNT
  emit_readword((int)&last_count,ECX);
  emit_add(HOST_CCREG,ECX,HOST_CCREG);
  emit_readword((int)&next_interupt,ECX);
  emit_writeword(HOST_CCREG,(int)&Count);
  emit_sub(HOST_CCREG,ECX,HOST_CCREG);
  emit_writeword(ECX,(int)&last_count);
#endif
//DEBUG <
  emit_jmp(linker);
}

emit_extjump(int addr, int target)
{
  emit_extjump2(addr, target, (int)dyna_linker);
}
emit_extjump_ds(int addr, int target)
{
  emit_extjump2(addr, target, (int)dyna_linker_ds);
}

do_readstub(int n)
{
  assem_debug("do_readstub %x\n",start+stubs[n][3]*4);
  set_jump_target(stubs[n][1],(int)out);
  int type=stubs[n][0];
  int i=stubs[n][3];
  int rs=stubs[n][4];
  struct regstat *i_regs=(struct regstat *)stubs[n][5];
  signed char *i_regmap=i_regs->regmap;
  int addr=get_reg(i_regmap,AGEN1+(i&1));
  int rth,rt;
  int ds;
  if(itype[i]==C1LS||itype[i]==LOADLR) {
    rth=get_reg(i_regmap,FTEMP|64);
    rt=get_reg(i_regmap,FTEMP);
  }else{
    rth=get_reg(i_regmap,rt1[i]|64);
    rt=get_reg(i_regmap,rt1[i]);
  }
  assert(rs>=0);
  assert(rt>=0);
  if(addr<0) addr=rt;
  assert(addr>=0);
  int ftable=0;
  if(type==LOADB_STUB||type==LOADBU_STUB)
    ftable=(int)readmemb;
  if(type==LOADH_STUB||type==LOADHU_STUB)
    ftable=(int)readmemh;
  if(type==LOADW_STUB)
    ftable=(int)readmem;
  if(type==LOADD_STUB)
    ftable=(int)readmemd;
  emit_writeword(rs,(int)&address);
  emit_shrimm(rs,16,addr);
  emit_movmem_indexedx4(ftable,addr,addr);
  emit_pusha();
  ds=i_regs!=&regs[i];
  int real_rs=(itype[i]==LOADLR)?-1:get_reg(i_regmap,rs1[i]);
  if(!ds) load_all_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs)),i);
  wb_dirtys(i_regs->regmap_entry,i_regs->was32,i_regs->wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs)));
  
  int temp;
  int cc=get_reg(i_regmap,CCREG);
  if(cc<0) {
    if(addr==HOST_CCREG)
    {
      cc=0;temp=1;
      assert(cc!=HOST_CCREG);
      assert(temp!=HOST_CCREG);
      emit_loadreg(CCREG,cc);
    }
    else
    {
      cc=HOST_CCREG;
      emit_loadreg(CCREG,cc);
      temp=!addr;
    }
  }
  else
  {
    temp=!addr;
  }
  emit_readword((int)&last_count,temp);
  emit_addimm(cc,CLOCK_DIVIDER*(stubs[n][6]+1),cc);
  emit_writeword_imm_esp(start+i*4+(((regs[i].was32>>rs1[i])&1)<<1)+ds,32);
  emit_add(cc,temp,cc);
  emit_writeword(cc,(int)&Count);
  emit_callreg(addr);
  // We really shouldn't need to update the count here,
  // but not doing so causes random crashes...
  emit_readword((int)&Count,HOST_CCREG);
  emit_readword((int)&next_interupt,ECX);
  emit_addimm(HOST_CCREG,-CLOCK_DIVIDER*(stubs[n][6]+1),HOST_CCREG);
  emit_sub(HOST_CCREG,ECX,HOST_CCREG);
  emit_writeword(ECX,(int)&last_count);
  emit_storereg(CCREG,HOST_CCREG);
  emit_popa();
  if((cc=get_reg(i_regmap,CCREG))>=0) {
    emit_loadreg(CCREG,cc);
  }
  if(type==LOADB_STUB)
    emit_movsbl((int)&readmem_dword,rt);
  if(type==LOADBU_STUB)
    emit_movzbl((int)&readmem_dword,rt);
  if(type==LOADH_STUB)
    emit_movswl((int)&readmem_dword,rt);
  if(type==LOADHU_STUB)
    emit_movzwl((int)&readmem_dword,rt);
  if(type==LOADW_STUB)
    emit_readword((int)&readmem_dword,rt);
  if(type==LOADD_STUB) {
    emit_readword((int)&readmem_dword,rt);
    if(rth>=0) emit_readword(((int)&readmem_dword)+4,rth);
  }
  emit_jmp(stubs[n][2]); // return address
}

inline_readstub(int type, int i, u_int addr, signed char regmap[], int target, int adj, u_int reglist)
{
  assem_debug("inline_readstub\n");
  int rs=get_reg(regmap,target);
  int rth=get_reg(regmap,target|64);
  int rt=get_reg(regmap,target);
  assert(rs>=0);
  assert(rt>=0);
  int ftable=0;
  if(type==LOADB_STUB||type==LOADBU_STUB)
    ftable=(int)readmemb;
  if(type==LOADH_STUB||type==LOADHU_STUB)
    ftable=(int)readmemh;
  if(type==LOADW_STUB)
    ftable=(int)readmem;
  if(type==LOADD_STUB)
    ftable=(int)readmemd;
  #ifdef HOST_IMM_ADDR32
  emit_writeword_imm(addr,(int)&address);
  #else
  emit_writeword(rs,(int)&address);
  #endif
  emit_pusha();
  int cc=get_reg(regmap,CCREG);
  int temp;
  if(cc<0) {
    if(rs==HOST_CCREG)
    {
      cc=0;temp=1;
      assert(cc!=HOST_CCREG);
      assert(temp!=HOST_CCREG);
      emit_loadreg(CCREG,cc);
    }
    else
    {
      cc=HOST_CCREG;
      emit_loadreg(CCREG,cc);
      temp=!rs;
    }
  }
  else
  {
    temp=!rs;
  }
  emit_readword((int)&last_count,temp);
  emit_addimm(cc,CLOCK_DIVIDER*(adj+1),cc);
  emit_add(cc,temp,cc);
  emit_writeword(cc,(int)&Count);
  if((signed int)addr>=(signed int)0xC0000000) {
    // Pagefault address
    int ds=regmap!=regs[i].regmap;
    emit_writeword_imm_esp(start+i*4+(((regs[i].was32>>rs1[i])&1)<<1)+ds,32);
  }
  emit_call(((u_int *)ftable)[addr>>16]);
  // We really shouldn't need to update the count here,
  // but not doing so causes random crashes...
  emit_readword((int)&Count,HOST_CCREG);
  emit_readword((int)&next_interupt,ECX);
  emit_addimm(HOST_CCREG,-CLOCK_DIVIDER*(adj+1),HOST_CCREG);
  emit_sub(HOST_CCREG,ECX,HOST_CCREG);
  emit_writeword(ECX,(int)&last_count);
  emit_storereg(CCREG,HOST_CCREG);
  emit_popa();
  if((cc=get_reg(regmap,CCREG))>=0) {
    emit_loadreg(CCREG,cc);
  }
  if(type==LOADB_STUB)
    emit_movsbl((int)&readmem_dword,rt);
  if(type==LOADBU_STUB)
    emit_movzbl((int)&readmem_dword,rt);
  if(type==LOADH_STUB)
    emit_movswl((int)&readmem_dword,rt);
  if(type==LOADHU_STUB)
    emit_movzwl((int)&readmem_dword,rt);
  if(type==LOADW_STUB)
    emit_readword((int)&readmem_dword,rt);
  if(type==LOADD_STUB) {
    emit_readword((int)&readmem_dword,rt);
    if(rth>=0) emit_readword(((int)&readmem_dword)+4,rth);
  }
}

do_writestub(int n)
{
  assem_debug("do_writestub %x\n",start+stubs[n][3]*4);
  set_jump_target(stubs[n][1],(int)out);
  int type=stubs[n][0];
  int i=stubs[n][3];
  int rs=stubs[n][4];
  struct regstat *i_regs=(struct regstat *)stubs[n][5];
  signed char *i_regmap=i_regs->regmap;
  int addr=get_reg(i_regmap,AGEN1+(i&1));
  int rth,rt,r;
  int ds;
  if(itype[i]==C1LS) {
    rth=get_reg(i_regmap,FTEMP|64);
    rt=get_reg(i_regmap,r=FTEMP);
  }else{
    rth=get_reg(i_regmap,rs2[i]|64);
    rt=get_reg(i_regmap,r=rs2[i]);
  }
  assert(rs>=0);
  assert(rt>=0);
  if(addr<0) addr=get_reg(i_regmap,-1);
  assert(addr>=0);
  int ftable=0;
  if(type==STOREB_STUB)
    ftable=(int)writememb;
  if(type==STOREH_STUB)
    ftable=(int)writememh;
  if(type==STOREW_STUB)
    ftable=(int)writemem;
  if(type==STORED_STUB)
    ftable=(int)writememd;
  emit_writeword(rs,(int)&address);
  emit_shrimm(rs,16,addr);
  emit_movmem_indexedx4(ftable,addr,addr);
  if(type==STOREB_STUB)
    emit_writebyte(rt,(int)&byte);
  if(type==STOREH_STUB)
    emit_writehword(rt,(int)&hword);
  if(type==STOREW_STUB)
    emit_writeword(rt,(int)&word);
  if(type==STORED_STUB) {
    emit_writeword(rt,(int)&dword);
    emit_writeword(r?rth:rt,(int)&dword+4);
  }
  emit_pusha();
  ds=i_regs!=&regs[i];
  int real_rs=get_reg(i_regmap,rs1[i]);
  if(!ds) load_all_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs)),i);
  wb_dirtys(i_regs->regmap_entry,i_regs->was32,i_regs->wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs)));
  
  int temp;
  int cc=get_reg(i_regmap,CCREG);
  if(cc<0) {
    if(addr==HOST_CCREG)
    {
      cc=0;temp=1;
      assert(cc!=HOST_CCREG);
      assert(temp!=HOST_CCREG);
      emit_loadreg(CCREG,cc);
    }
    else
    {
      cc=HOST_CCREG;
      emit_loadreg(CCREG,cc);
      temp=!addr;
    }
  }
  else
  {
    temp=!addr;
  }
  emit_readword((int)&last_count,temp);
  emit_addimm(cc,CLOCK_DIVIDER*(stubs[n][6]+1),cc);
  emit_writeword_imm_esp(start+i*4+(((regs[i].was32>>rs1[i])&1)<<1)+ds,32);
  emit_add(cc,temp,cc);
  emit_writeword(cc,(int)&Count);
  emit_callreg(addr);
  emit_readword((int)&Count,HOST_CCREG);
  emit_readword((int)&next_interupt,ECX);
  emit_addimm(HOST_CCREG,-CLOCK_DIVIDER*(stubs[n][6]+1),HOST_CCREG);
  emit_sub(HOST_CCREG,ECX,HOST_CCREG);
  emit_writeword(ECX,(int)&last_count);
  emit_storereg(CCREG,HOST_CCREG);
  emit_popa();
  if((cc=get_reg(i_regmap,CCREG))>=0) {
    emit_loadreg(CCREG,cc);
  }
  emit_jmp(stubs[n][2]); // return address
}

inline_writestub(int type, int i, u_int addr, signed char regmap[], int target, int adj, u_int reglist)
{
  assem_debug("inline_writestub\n");
  int rs=get_reg(regmap,-1);
  int rth=get_reg(regmap,target|64);
  int rt=get_reg(regmap,target);
  assert(rs>=0);
  assert(rt>=0);
  int ftable=0;
  if(type==STOREB_STUB)
    ftable=(int)writememb;
  if(type==STOREH_STUB)
    ftable=(int)writememh;
  if(type==STOREW_STUB)
    ftable=(int)writemem;
  if(type==STORED_STUB)
    ftable=(int)writememd;
  emit_writeword(rs,(int)&address);
  if(type==STOREB_STUB)
    emit_writebyte(rt,(int)&byte);
  if(type==STOREH_STUB)
    emit_writehword(rt,(int)&hword);
  if(type==STOREW_STUB)
    emit_writeword(rt,(int)&word);
  if(type==STORED_STUB) {
    emit_writeword(rt,(int)&dword);
    emit_writeword(target?rth:rt,(int)&dword+4);
  }
  emit_pusha();
  int cc=get_reg(regmap,CCREG);
  int temp;
  if(cc<0) {
    if(rs==HOST_CCREG)
    {
      cc=0;temp=1;
      assert(cc!=HOST_CCREG);
      assert(temp!=HOST_CCREG);
      emit_loadreg(CCREG,cc);
    }
    else
    {
      cc=HOST_CCREG;
      emit_loadreg(CCREG,cc);
      temp=!rs;
    }
  }
  else
  {
    temp=!rs;
  }
  emit_readword((int)&last_count,temp);
  emit_addimm(cc,CLOCK_DIVIDER*(adj+1),cc);
  emit_add(cc,temp,cc);
  emit_writeword(cc,(int)&Count);
  if((signed int)addr>=(signed int)0xC0000000) {
    // Pagefault address
    int ds=regmap!=regs[i].regmap;
    emit_writeword_imm_esp(start+i*4+(((regs[i].was32>>rs1[i])&1)<<1)+ds,32);
  }
  emit_call(((u_int *)ftable)[addr>>16]);
  emit_readword((int)&Count,HOST_CCREG);
  emit_readword((int)&next_interupt,ECX);
  emit_addimm(HOST_CCREG,-CLOCK_DIVIDER*(adj+1),HOST_CCREG);
  emit_sub(HOST_CCREG,ECX,HOST_CCREG);
  emit_writeword(ECX,(int)&last_count);
  emit_storereg(CCREG,HOST_CCREG);
  emit_popa();
  if((cc=get_reg(regmap,CCREG))>=0) {
    emit_loadreg(CCREG,cc);
  }
}

do_unalignedwritestub(int n)
{
  set_jump_target(stubs[n][1],(int)out);
  output_byte(0xCC);
  emit_jmp(stubs[n][2]); // return address
}

void printregs(int edi,int esi,int ebp,int esp,int b,int d,int c,int a)
{
  printf("regs: %x %x %x %x %x %x %x (%x)\n",a,b,c,d,ebp,esi,edi,(&edi)[-1]);
}

do_invstub(int n)
{
  set_jump_target(stubs[n][1],(int)out);
  if(stubs[n][4]!=EDI) emit_xchg(stubs[n][4],EDI);
  emit_pusha();
  emit_call((int)&invalidate_block);
  emit_popa();
  if(stubs[n][4]!=EDI) emit_xchg(stubs[n][4],EDI);
  emit_jmp(stubs[n][2]); // return address
}

int do_dirty_stub(int i)
{
  assem_debug("do_dirty_stub %x\n",start+i*4);
  emit_pushimm(start+i*4);
  emit_movimm((int)start<(int)0xC0000000?(int)source:(int)start,EAX);
  emit_movimm((int)copy,EBX);
  emit_movimm(slen*4,ECX);
  emit_call((int)start<(int)0xC0000000?(int)&verify_code:(int)&verify_code_vm);
  emit_addimm(ESP,4,ESP);
  int entry=(int)out;
  load_regs_entry(i);
  if(entry==(int)out) entry=instr_addr[i];
  emit_jmp(instr_addr[i]);
  return entry;
}

void do_dirty_stub_ds()
{
  emit_pushimm(start+1);
  emit_movimm((int)start<(int)0xC0000000?(int)source:(int)start,EAX);
  emit_movimm((int)copy,EBX);
  emit_movimm(slen*4,ECX);
  emit_call((int)&verify_code_ds);
  emit_addimm(ESP,4,ESP);
}

do_cop1stub(int n)
{
  assem_debug("do_cop1stub %x\n",start+stubs[n][3]*4);
  set_jump_target(stubs[n][1],(int)out);
  int i=stubs[n][3];
  int rs=stubs[n][4];
  struct regstat *i_regs=(struct regstat *)stubs[n][5];
  int ds=stubs[n][6];
  if(!ds) {
    load_all_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty,i);
    //if(i_regs!=&regs[i]) printf("oops: regs[i]=%x i_regs=%x",(int)&regs[i],(int)i_regs);
  }
  //else {printf("fp exception in delay slot\n");}
  wb_dirtys(i_regs->regmap_entry,i_regs->was32,i_regs->wasdirty);
  if(regs[i].regmap_entry[HOST_CCREG]!=CCREG) emit_loadreg(CCREG,HOST_CCREG);
  emit_movimm(start+(i-ds)*4,EAX); // Get PC
  emit_addimm(HOST_CCREG,CLOCK_DIVIDER*ccadj[i],HOST_CCREG); // CHECK: is this right?  There should probably be an extra cycle...
  emit_jmp(ds?(int)fp_exception_ds:(int)fp_exception);
}

/* TLB */

int do_tlb_r(int s,int ar,int map,int x,int a,int shift,int c,u_int addr)
{
  if(c) {
    if((signed int)addr>=(signed int)0xC0000000) {
      emit_readword((int)(memory_map+(addr>>12)),map);
    }
    else
      return -1; // No mapping
  }
  else {
    if(s!=map) emit_mov(s,map);
    emit_shrimm(map,12,map);
    // Schedule this while we wait on the load
    //if(x) emit_xorimm(addr,x,addr);
    if(shift>=0) emit_lea8(s,shift);
    if(~a) emit_andimm(s,a,ar);
    emit_movmem_indexedx4((int)memory_map,map,map);
  }
  return map;
}
int do_tlb_r_branch(int map, int c, u_int addr, int *jaddr)
{
  if(!c||(signed int)addr>=(signed int)0xC0000000) {
    emit_test(map,map);
    *jaddr=(int)out;
    emit_js(0);
  }
  return map;
}

int gen_tlb_addr_r(int ar, int map) {
  if(map>=0) {
    emit_leairrx4(0,ar,map,ar);
  }
}

int do_tlb_w(int s,int ar,int map,int x,int c,u_int addr)
{
  if(c) {
    if(addr<0x80800000||addr>=0xC0000000) {
      emit_readword((int)(memory_map+(addr>>12)),map);
    }
    else
      return -1; // No mapping
  }
  else {
    if(s!=map) emit_mov(s,map);
    //if(s!=ar) emit_mov(s,ar);
    emit_shrimm(map,12,map);
    // Schedule this while we wait on the load
    //if(x) emit_xorimm(s,x,addr);
    emit_movmem_indexedx4((int)memory_map,map,map);
  }
  emit_shlimm(map,2,map);
  return map;
}
int do_tlb_w_branch(int map, int c, u_int addr, int *jaddr)
{
  if(!c||addr<0x80800000||addr>=0xC0000000) {
    *jaddr=(int)out;
    emit_jc(0);
  }
}

int gen_tlb_addr_w(int ar, int map) {
  if(map>=0) {
    emit_leairrx1(0,ar,map,ar);
  }
}

// We don't need this for x86
generate_map_const(u_int addr,int reg) {
  // void *mapaddr=memory_map+(addr>>12);
}

/* Special assem */

void shift_assemble_x86(int i,struct regstat *i_regs)
{
  if(rt1[i]) {
    if(opcode2[i]<=0x07) // SLLV/SRLV/SRAV
    {
      char s,t,shift;
      t=get_reg(i_regs->regmap,rt1[i]);
      s=get_reg(i_regs->regmap,rs1[i]);
      shift=get_reg(i_regs->regmap,rs2[i]);
      if(t>=0){
        if(rs1[i]==0)
        {
          emit_zeroreg(t);
        }
        else if(rs2[i]==0)
        {
          assert(s>=0);
          if(s!=t) emit_mov(s,t);
        }
        else
        {
          char temp=get_reg(i_regs->regmap,-1);
          assert(s>=0);
          if(t==ECX&&s!=ECX) {
            if(shift!=ECX) emit_mov(shift,ECX);
            if(rt1[i]==rs2[i]) {shift=temp;}
            if(s!=shift) emit_mov(s,shift);
          }
          else
          {
            if(rt1[i]==rs2[i]) {emit_mov(shift,temp);shift=temp;}
            if(s!=t) emit_mov(s,t);
            if(shift!=ECX) {
              if(i_regs->regmap[ECX]<0)
                emit_mov(shift,ECX);
              else
                emit_xchg(shift,ECX);
            }
          }
          if(opcode2[i]==4) // SLLV
          {
            emit_shlcl(t==ECX?shift:t);
          }
          if(opcode2[i]==6) // SRLV
          {
            emit_shrcl(t==ECX?shift:t);
          }
          if(opcode2[i]==7) // SRAV
          {
            emit_sarcl(t==ECX?shift:t);
          }
          if(shift!=ECX&&i_regs->regmap[ECX]>=0) emit_xchg(shift,ECX);
        }
      }
    } else { // DSLLV/DSRLV/DSRAV
      char sh,sl,th,tl,shift;
      th=get_reg(i_regs->regmap,rt1[i]|64);
      tl=get_reg(i_regs->regmap,rt1[i]);
      sh=get_reg(i_regs->regmap,rs1[i]|64);
      sl=get_reg(i_regs->regmap,rs1[i]);
      shift=get_reg(i_regs->regmap,rs2[i]);
      if(tl>=0){
        if(rs1[i]==0)
        {
          emit_zeroreg(tl);
          if(th>=0) emit_zeroreg(th);
        }
        else if(rs2[i]==0)
        {
          assert(sl>=0);
          if(sl!=tl) emit_mov(sl,tl);
          if(th>=0&&sh!=th) emit_mov(sh,th);
        }
        else
        {
          // FIXME: What if shift==tl ?
          assert(shift!=tl);
          int temp=get_reg(i_regs->regmap,-1);
          int real_th=th;
          if(th<0&&opcode2[i]!=0x14) {th=temp;} // DSLLV doesn't need a temporary register
          assert(sl>=0);
          assert(sh>=0);
          if(tl==ECX&&sl!=ECX) {
            if(shift!=ECX) emit_mov(shift,ECX);
            if(sl!=shift) emit_mov(sl,shift);
            if(th>=0 && sh!=th) emit_mov(sh,th);
          }
          else if(th==ECX&&sh!=ECX) {
            if(shift!=ECX) emit_mov(shift,ECX);
            if(sh!=shift) emit_mov(sh,shift);
            if(sl!=tl) emit_mov(sl,tl);
          }
          else
          {
            if(sl!=tl) emit_mov(sl,tl);
            if(th>=0 && sh!=th) emit_mov(sh,th);
            if(shift!=ECX) {
              if(i_regs->regmap[ECX]<0)
                emit_mov(shift,ECX);
              else
                emit_xchg(shift,ECX);
            }
          }
          if(opcode2[i]==0x14) // DSLLV
          {
            if(th>=0) emit_shldcl(th==ECX?shift:th,tl==ECX?shift:tl);
            emit_shlcl(tl==ECX?shift:tl);
            emit_testimm(ECX,32);
            if(th>=0) emit_cmovne_reg(tl==ECX?shift:tl,th==ECX?shift:th);
            emit_cmovne(&const_zero,tl==ECX?shift:tl);
          }
          if(opcode2[i]==0x16) // DSRLV
          {
            assert(th>=0);
            emit_shrdcl(tl==ECX?shift:tl,th==ECX?shift:th);
            emit_shrcl(th==ECX?shift:th);
            emit_testimm(ECX,32);
            emit_cmovne_reg(th==ECX?shift:th,tl==ECX?shift:tl);
            if(real_th>=0) emit_cmovne(&const_zero,th==ECX?shift:th);
          }
          if(opcode2[i]==0x17) // DSRAV
          {
            assert(th>=0);
            emit_shrdcl(tl==ECX?shift:tl,th==ECX?shift:th);
            if(real_th>=0) {
              assert(temp>=0);
              emit_mov(th==ECX?shift:th,temp==ECX?shift:temp);
            }
            emit_sarcl(th==ECX?shift:th);
            if(real_th>=0) emit_sarimm(temp==ECX?shift:temp,31,temp==ECX?shift:temp);
            emit_testimm(ECX,32);
            emit_cmovne_reg(th==ECX?shift:th,tl==ECX?shift:tl);
            if(real_th>=0) emit_cmovne_reg(temp==ECX?shift:temp,th==ECX?shift:th);
          }
          if(shift!=ECX&&(i_regs->regmap[ECX]>=0||temp==ECX)) emit_xchg(shift,ECX);
        }
      }
    }
  }
}
#define shift_assemble shift_assemble_x86

void loadlr_assemble_x86(int i,struct regstat *i_regs)
{
  int s,th,tl,temp,temp2,addr,map=-1;
  int offset;
  int jaddr=0;
  int memtarget,c=0;
  u_int hr,reglist=0;
  th=get_reg(i_regs->regmap,rt1[i]|64);
  tl=get_reg(i_regs->regmap,rt1[i]);
  s=get_reg(i_regs->regmap,rs1[i]);
  temp=get_reg(i_regs->regmap,-1);
  temp2=get_reg(i_regs->regmap,FTEMP);
  addr=get_reg(i_regs->regmap,AGEN1+(i&1));
  assert(addr<0);
  offset=imm[i];
  for(hr=0;hr<HOST_REGS;hr++) {
    if(i_regs->regmap[hr]>=0) reglist|=1<<hr;
  }
  reglist|=1<<temp;
  if(offset||s<0||c) addr=temp2;
  else addr=s;
  if(s>=0) {
    c=(i_regs->wasconst>>s)&1;
    memtarget=((signed int)(constmap[i][s]+offset))<(signed int)0x80800000;
    if(using_tlb&&((signed int)(constmap[i][s]+offset))>=(signed int)0xC0000000) memtarget=1;
  }
  if(tl>=0) {
    //assert(tl>=0);
    //assert(rt1[i]);
    if(!using_tlb) {
      if(!c) {
        emit_lea8(addr,temp);
        if (opcode[i]==0x22||opcode[i]==0x26) {
          emit_andimm(addr,0xFFFFFFFC,temp2); // LWL/LWR
        }else{
          emit_andimm(addr,0xFFFFFFF8,temp2); // LDL/LDR
        }
        emit_cmpimm(addr,0x800000);
        jaddr=(int)out;
        emit_jno(0);
      }
      else {
        if (opcode[i]==0x22||opcode[i]==0x26) {
          emit_movimm(((constmap[i][s]+offset)<<3)&24,temp); // LWL/LWR
        }else{
          emit_movimm(((constmap[i][s]+offset)<<3)&56,temp); // LDL/LDR
        }
      }
    }else{ // using tlb
      int a;
      if(c) {
        a=-1;
      }else if (opcode[i]==0x22||opcode[i]==0x26) {
        a=0xFFFFFFFC; // LWL/LWR
      }else{
        a=0xFFFFFFF8; // LDL/LDR
      }
      map=get_reg(i_regs->regmap,TLREG);
      assert(map>=0);
      map=do_tlb_r(addr,temp2,map,0,a,c?-1:temp,c,constmap[i][s]+offset);
      if(c) {
        if (opcode[i]==0x22||opcode[i]==0x26) {
          emit_movimm(((constmap[i][s]+offset)<<3)&24,temp); // LWL/LWR
        }else{
          emit_movimm(((constmap[i][s]+offset)<<3)&56,temp); // LDL/LDR
        }
      }
      do_tlb_r_branch(map,c,constmap[i][s]+offset,&jaddr);
    }
    if (opcode[i]==0x22||opcode[i]==0x26) { // LWL/LWR
      if(!c||memtarget) {
        //emit_readword_indexed((int)rdram-0x80000000,temp2,temp2);
        emit_readword_indexed_tlb(0,temp2,map,temp2);
        if(jaddr) add_stub(LOADW_STUB,jaddr,(int)out,i,temp2,(int)i_regs,ccadj[i],reglist);
      }
      else
        inline_readstub(LOADW_STUB,i,(constmap[i][s]+offset)&0xFFFFFFFC,i_regs->regmap,FTEMP,ccadj[i],reglist);
      emit_andimm(temp,24,temp);
      if (opcode[i]==0x26) emit_xorimm(temp,24,temp); // LWR
      if(temp==ECX)
      {
        int temp3=EDX;
        if(temp3==temp2) temp3++;
        emit_pushreg(temp3);
        emit_movimm(-1,temp3);
        if (opcode[i]==0x26) {
          emit_shrcl(temp3);
          emit_shrcl(temp2);
        }else{
          emit_shlcl(temp3);
          emit_shlcl(temp2);
        }
        emit_mov(temp3,ECX);
        emit_not(ECX,ECX);
        emit_popreg(temp3);
      }
      else
      {
        int temp3=EBP;
        if(temp3==temp) temp3++;
        if(temp3==temp2) temp3++;
        if(temp3==temp) temp3++;
        emit_xchg(ECX,temp);
        emit_pushreg(temp3);
        emit_movimm(-1,temp3);
        if (opcode[i]==0x26) {
          emit_shrcl(temp3);
          emit_shrcl(temp2==ECX?temp:temp2);
        }else{
          emit_shlcl(temp3);
          emit_shlcl(temp2==ECX?temp:temp2);
        }
        emit_not(temp3,temp3);
        emit_mov(temp,ECX);
        emit_mov(temp3,temp);
        emit_popreg(temp3);
      }
      emit_and(temp,tl,tl);
      emit_or(temp2,tl,tl);
      //emit_storereg(rt1[i],tl); // DEBUG
    /*emit_pusha();
    //save_regs(0x100f);
        emit_readword((int)&last_count,ECX);
        if(get_reg(i_regs->regmap,CCREG)<0)
          emit_loadreg(CCREG,HOST_CCREG);
        emit_add(HOST_CCREG,ECX,HOST_CCREG);
        emit_addimm(HOST_CCREG,2*ccadj[i],HOST_CCREG);
        emit_writeword(HOST_CCREG,(int)&Count);
    emit_call((int)memdebug);
    emit_popa();
    //restore_regs(0x100f);*/
    }
    if (opcode[i]==0x1A||opcode[i]==0x1B) { // LDL/LDR
      if(s>=0) 
        if((i_regs->wasdirty>>s)&1)
          emit_storereg(rs1[i],s);
      if(get_reg(i_regs->regmap,rs1[i]|64)>=0) 
        if((i_regs->wasdirty>>get_reg(i_regs->regmap,rs1[i]|64))&1)
          emit_storereg(rs1[i]|64,get_reg(i_regs->regmap,rs1[i]|64));
      int temp2h=get_reg(i_regs->regmap,FTEMP|64);
      if(!c||memtarget) {
        //if(th>=0) emit_readword_indexed((int)rdram-0x80000000,temp2,temp2h);
        //emit_readword_indexed((int)rdram-0x7FFFFFFC,temp2,temp2);
        emit_readdword_indexed_tlb(0,temp2,map,temp2h,temp2);
        if(jaddr) add_stub(LOADD_STUB,jaddr,(int)out,i,temp2,(int)i_regs,ccadj[i],reglist);
      }
      else
        inline_readstub(LOADD_STUB,i,(constmap[i][s]+offset)&0xFFFFFFF8,i_regs->regmap,FTEMP,ccadj[i],reglist);
      emit_andimm(temp,56,temp);
      emit_pushreg(temp);
      emit_pushreg(temp2h);
      emit_pushreg(temp2);
      emit_pushreg(th);
      emit_pushreg(tl);
      if(opcode[i]==0x1A) emit_call((int)ldl_merge);
      if(opcode[i]==0x1B) emit_call((int)ldr_merge);
      emit_addimm(ESP,20,ESP);
      if(tl!=EDX) {
        if(tl!=EAX) emit_mov(EAX,tl);
        if(th!=EDX) emit_mov(EDX,th);
      } else
      if(th!=EAX) {
        if(th!=EDX) emit_mov(EDX,th);
        if(tl!=EAX) emit_mov(EAX,tl);
      } else {
        emit_xchg(EAX,EDX);
      }
      if(s>=0) emit_loadreg(rs1[i],s);
      if(get_reg(i_regs->regmap,rs1[i]|64)>=0)
        emit_loadreg(rs1[i]|64,get_reg(i_regs->regmap,rs1[i]|64));
    }
  }
}
#define loadlr_assemble loadlr_assemble_x86

void cop0_assemble(int i,struct regstat *i_regs)
{
  if(opcode2[i]==0) // MFC0
  {
    signed char t=get_reg(i_regs->regmap,rt1[i]);
    char copr=(source[i]>>11)&0x1f;
    //assert(t>=0); // Why does this happen?  OOT is weird
    if(t>=0) {
      emit_writeword_imm((int)&fake_pc,(int)&PC);
      emit_writebyte_imm((source[i]>>11)&0x1f,(int)&(fake_pc.f.r.nrd));
      if(copr==9) {
        emit_readword((int)&last_count,ECX);
        emit_loadreg(CCREG,HOST_CCREG); // TODO: do proper reg alloc
        emit_add(HOST_CCREG,ECX,HOST_CCREG);
        emit_addimm(HOST_CCREG,CLOCK_DIVIDER*ccadj[i],HOST_CCREG);
        emit_writeword(HOST_CCREG,(int)&Count);
      }
      emit_call((int)MFC0);
      emit_readword((int)&readmem_dword,t);
    }
  }
  else if(opcode2[i]==4) // MTC0
  {
    signed char s=get_reg(i_regs->regmap,rs1[i]);
    char copr=(source[i]>>11)&0x1f;
    assert(s>=0);
    emit_writeword(s,(int)&readmem_dword);
    emit_pusha();
    emit_writeword_imm((int)&fake_pc,(int)&PC);
    emit_writebyte_imm((source[i]>>11)&0x1f,(int)&(fake_pc.f.r.nrd));
    if(copr==9||copr==11||copr==12) {
      if(copr==12&&!is_delayslot) {
        wb_register(rs1[i],i_regs->regmap,i_regs->dirty,i_regs->is32);
      }
      emit_readword((int)&last_count,ECX);
      emit_loadreg(CCREG,HOST_CCREG); // TODO: do proper reg alloc
      emit_add(HOST_CCREG,ECX,HOST_CCREG);
      emit_addimm(HOST_CCREG,CLOCK_DIVIDER*ccadj[i],HOST_CCREG);
      emit_writeword(HOST_CCREG,(int)&Count);
    }
    // What a mess.  The status register (12) can enable interrupts,
    // so needs a special case to handle a pending interrupt.
    // The interrupt must be taken immediately, because a subsequent
    // instruction might disable interrupts again.
    if(copr==12&&!is_delayslot) {
      emit_writeword_imm(start+i*4+4,(int)&pcaddr);
      emit_writebyte_imm(0,(int)&pending_exception);
    }
    //else if(copr==12&&is_delayslot) emit_call((int)MTC0_R12);
    //else
    emit_call((int)MTC0);
    if(copr==9||copr==11||copr==12) {
      emit_readword((int)&Count,HOST_CCREG);
      emit_readword((int)&next_interupt,ECX);
      emit_addimm(HOST_CCREG,-CLOCK_DIVIDER*ccadj[i],HOST_CCREG);
      emit_sub(HOST_CCREG,ECX,HOST_CCREG);
      emit_writeword(ECX,(int)&last_count);
      emit_storereg(CCREG,HOST_CCREG);
    }
    emit_popa();
    if(copr==12) {
      assert(!is_delayslot);
      //if(is_delayslot) output_byte(0xcc);
      emit_cmpmem_imm_byte((int)&pending_exception,0);
      emit_jne((int)&do_interrupt);
    }
    cop1_usable=0;
  }
  else
  {
    assert(opcode2[i]==0x10);
    if((source[i]&0x3f)==0x01) // TLBR
      emit_call((int)TLBR);
    if((source[i]&0x3f)==0x02) // TLBWI
      emit_call((int)TLBWI_new);
    if((source[i]&0x3f)==0x06) { // TLBWR
      // The TLB entry written by TLBWR is dependent on the count,
      // so update the cycle count
      emit_readword((int)&last_count,ECX);
      if(i_regs->regmap[HOST_CCREG]!=CCREG) emit_loadreg(CCREG,HOST_CCREG);
      emit_add(HOST_CCREG,ECX,HOST_CCREG);
      emit_addimm(HOST_CCREG,CLOCK_DIVIDER*ccadj[i],HOST_CCREG);
      emit_writeword(HOST_CCREG,(int)&Count);
      emit_call((int)TLBWR_new);
    }
    if((source[i]&0x3f)==0x08) // TLBP
      emit_call((int)TLBP);
    if((source[i]&0x3f)==0x18) // ERET
    {
      int count=ccadj[i];
      if(i_regs->regmap[HOST_CCREG]!=CCREG) emit_loadreg(CCREG,HOST_CCREG);
      emit_addimm_and_set_flags(CLOCK_DIVIDER*count,HOST_CCREG); // TODO: Should there be an extra cycle here?
      emit_jmp((int)jump_eret);
    }
  }
}

void cop1_assemble(int i,struct regstat *i_regs)
{
  // Check cop1 unusable
  if(!cop1_usable) {
    signed char rs=get_reg(i_regs->regmap,CSREG);
    assert(rs>=0);
    emit_testimm(rs,0x20000000);
    int jaddr=(int)out;
    emit_jeq(0);
    add_stub(FP_STUB,jaddr,(int)out,i,rs,(int)i_regs,is_delayslot,0);
    cop1_usable=1;
  }
  if (opcode2[i]==0) { // MFC1
    signed char tl=get_reg(i_regs->regmap,rt1[i]);
    if(tl>=0) {
      emit_readword((int)&reg_cop1_simple[(source[i]>>11)&0x1f],tl);
      emit_readword_indexed(0,tl,tl);
    }
  }
  else if (opcode2[i]==1) { // DMFC1
    signed char tl=get_reg(i_regs->regmap,rt1[i]);
    signed char th=get_reg(i_regs->regmap,rt1[i]|64);
    if(tl>=0) {
      emit_readword((int)&reg_cop1_double[(source[i]>>11)&0x1f],tl);
      if(th>=0) emit_readword_indexed(4,tl,th);
      emit_readword_indexed(0,tl,tl);
    }
  }
  else if (opcode2[i]==4) { // MTC1
    signed char sl=get_reg(i_regs->regmap,rs1[i]);
    signed char temp=get_reg(i_regs->regmap,-1);
    emit_readword((int)&reg_cop1_simple[(source[i]>>11)&0x1f],temp);
    emit_writeword_indexed(sl,0,temp);
  }
  else if (opcode2[i]==5) { // DMTC1
    signed char sl=get_reg(i_regs->regmap,rs1[i]);
    signed char sh=rs1[i]>0?get_reg(i_regs->regmap,rs1[i]|64):sl;
    signed char temp=get_reg(i_regs->regmap,-1);
    emit_readword((int)&reg_cop1_double[(source[i]>>11)&0x1f],temp);
    emit_writeword_indexed(sh,4,temp);
    emit_writeword_indexed(sl,0,temp);
  }
  else if (opcode2[i]==2) // CFC1
  {
    signed char tl=get_reg(i_regs->regmap,rt1[i]);
    if(tl>=0) {
      u_int copr=(source[i]>>11)&0x1f;
      if(copr==0) emit_readword((int)&FCR0,tl);
      if(copr==31) emit_readword((int)&FCR31,tl);
    }
  }
  else if (opcode2[i]==6) // CTC1
  {
    signed char sl=get_reg(i_regs->regmap,rs1[i]);
    u_int copr=(source[i]>>11)&0x1f;
    assert(sl>=0);
    if(copr==31)
    {
      emit_writeword(sl,(int)&FCR31);
      // Set the rounding mode
      char temp=get_reg(i_regs->regmap,-1);
      emit_movimm(3,temp);
      emit_and(sl,temp,temp);
      emit_fldcw_indexed((int)&rounding_modes,temp);
    }
  }
}

void fconv_assemble_x86(int i,struct regstat *i_regs)
{
  signed char temp=get_reg(i_regs->regmap,-1);
  assert(temp>=0);
  // Check cop1 unusable
  if(!cop1_usable) {
    signed char rs=get_reg(i_regs->regmap,CSREG);
    assert(rs>=0);
    emit_testimm(rs,0x20000000);
    int jaddr=(int)out;
    emit_jeq(0);
    add_stub(FP_STUB,jaddr,(int)out,i,rs,(int)i_regs,is_delayslot,0);
    cop1_usable=1;
  }
  if(opcode2[i]==0x10&&(source[i]&0x3f)==0x0d) { // trunc_w_s
    emit_readword((int)&reg_cop1_simple[(source[i]>>11)&0x1f],temp);
    emit_movss_load(temp,0);
    emit_cvttps2dq(0,0); // float->int, truncate
    if(((source[i]>>11)&0x1f)!=((source[i]>>6)&0x1f))
      emit_readword((int)&reg_cop1_simple[(source[i]>>6)&0x1f],temp);
    emit_movd_store(0,temp);
    return;
  }
  if(opcode2[i]==0x11&&(source[i]&0x3f)==0x0d) { // trunc_w_d
    emit_readword((int)&reg_cop1_double[(source[i]>>11)&0x1f],temp);
    emit_movsd_load(temp,0);
    emit_cvttpd2dq(0,0); // double->int, truncate
    emit_readword((int)&reg_cop1_simple[(source[i]>>6)&0x1f],temp);
    emit_movd_store(0,temp);
    return;
  }
  
  if(opcode2[i]==0x14&&(source[i]&0x3f)==0x20) { // cvt_s_w
    emit_readword((int)&reg_cop1_simple[(source[i]>>11)&0x1f],temp);
    emit_fildl(temp);
    if(((source[i]>>11)&0x1f)!=((source[i]>>6)&0x1f))
      emit_readword((int)&reg_cop1_simple[(source[i]>>6)&0x1f],temp);
    emit_fstps(temp);
    return;
  }
  if(opcode2[i]==0x14&&(source[i]&0x3f)==0x21) { // cvt_d_w
    emit_readword((int)&reg_cop1_simple[(source[i]>>11)&0x1f],temp);
    emit_fildl(temp);
    emit_readword((int)&reg_cop1_double[(source[i]>>6)&0x1f],temp);
    emit_fstpl(temp);
    return;
  }
  if(opcode2[i]==0x15&&(source[i]&0x3f)==0x20) { // cvt_s_l
    emit_readword((int)&reg_cop1_double[(source[i]>>11)&0x1f],temp);
    emit_fildll(temp);
    emit_readword((int)&reg_cop1_simple[(source[i]>>6)&0x1f],temp);
    emit_fstps(temp);
    return;
  }
  if(opcode2[i]==0x15&&(source[i]&0x3f)==0x21) { // cvt_d_l
    emit_readword((int)&reg_cop1_double[(source[i]>>11)&0x1f],temp);
    emit_fildll(temp);
    if(((source[i]>>11)&0x1f)!=((source[i]>>6)&0x1f))
      emit_readword((int)&reg_cop1_double[(source[i]>>6)&0x1f],temp);
    emit_fstpl(temp);
    return;
  }
  
  if(opcode2[i]==0x10&&(source[i]&0x3f)==0x21) { // cvt_d_s
    emit_readword((int)&reg_cop1_simple[(source[i]>>11)&0x1f],temp);
    emit_flds(temp);
    emit_readword((int)&reg_cop1_double[(source[i]>>6)&0x1f],temp);
    emit_fstpl(temp);
    return;
  }
  if(opcode2[i]==0x11&&(source[i]&0x3f)==0x20) { // cvt_s_d
    emit_readword((int)&reg_cop1_double[(source[i]>>11)&0x1f],temp);
    emit_fldl(temp);
    emit_readword((int)&reg_cop1_simple[(source[i]>>6)&0x1f],temp);
    emit_fstps(temp);
    return;
  }
  
  if(opcode2[i]==0x10) { // cvt_*_s
    emit_readword((int)&reg_cop1_simple[(source[i]>>11)&0x1f],temp);
    emit_flds(temp);
  }
  if(opcode2[i]==0x11) { // cvt_*_d
    emit_readword((int)&reg_cop1_double[(source[i]>>11)&0x1f],temp);
    emit_fldl(temp);
  }
  if((source[i]&0x3f)<0x10) {
    emit_fnstcw_stack();
    if((source[i]&3)==0) emit_fldcw((int)&round_mode); //printf("round\n");
    if((source[i]&3)==1) emit_fldcw((int)&trunc_mode); //printf("trunc\n");
    if((source[i]&3)==2) emit_fldcw((int)&ceil_mode); //printf("ceil\n");
    if((source[i]&3)==3) emit_fldcw((int)&floor_mode); //printf("floor\n");
  }
  if((source[i]&0x3f)==0x24||(source[i]&0x3c)==0x0c) { // cvt_w_*
    if(opcode2[i]!=0x10||((source[i]>>11)&0x1f)!=((source[i]>>6)&0x1f))
      emit_readword((int)&reg_cop1_simple[(source[i]>>6)&0x1f],temp);
    emit_fistpl(temp);
  }
  if((source[i]&0x3f)==0x25||(source[i]&0x3c)==0x08) { // cvt_l_*
    if(opcode2[i]!=0x11||((source[i]>>11)&0x1f)!=((source[i]>>6)&0x1f))
      emit_readword((int)&reg_cop1_double[(source[i]>>6)&0x1f],temp);
    emit_fistpll(temp);
  }
  if((source[i]&0x3f)<0x10) {
    emit_fldcw_stack();
  }
  return;
  
  // C emulation code for debugging
  
  emit_pusha();
  
  if(opcode2[i]==0x14&&(source[i]&0x3f)==0x20) {
    emit_pushmem((int)&reg_cop1_simple[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_simple[(source[i]>>11)&0x1f]);
    emit_call((int)cvt_s_w);
  }
  if(opcode2[i]==0x14&&(source[i]&0x3f)==0x21) {
    emit_pushmem((int)&reg_cop1_double[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_simple[(source[i]>>11)&0x1f]);
    emit_call((int)cvt_d_w);
  }
  if(opcode2[i]==0x15&&(source[i]&0x3f)==0x20) {
    emit_pushmem((int)&reg_cop1_simple[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_double[(source[i]>>11)&0x1f]);
    emit_call((int)cvt_s_l);
  }
  if(opcode2[i]==0x15&&(source[i]&0x3f)==0x21) {
    emit_pushmem((int)&reg_cop1_double[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_double[(source[i]>>11)&0x1f]);
    emit_call((int)cvt_d_l);
  }
  
  if(opcode2[i]==0x10&&(source[i]&0x3f)==0x21) {
    emit_pushmem((int)&reg_cop1_double[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_simple[(source[i]>>11)&0x1f]);
    emit_call((int)cvt_d_s);
  }
  if(opcode2[i]==0x10&&(source[i]&0x3f)==0x24) {
    emit_pushmem((int)&reg_cop1_simple[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_simple[(source[i]>>11)&0x1f]);
    emit_call((int)cvt_w_s);
  }
  if(opcode2[i]==0x10&&(source[i]&0x3f)==0x25) {
    emit_pushmem((int)&reg_cop1_double[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_simple[(source[i]>>11)&0x1f]);
    emit_call((int)cvt_l_s);
  }
  
  if(opcode2[i]==0x11&&(source[i]&0x3f)==0x20) {
    emit_pushmem((int)&reg_cop1_simple[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_double[(source[i]>>11)&0x1f]);
    emit_call((int)cvt_s_d);
  }
  if(opcode2[i]==0x11&&(source[i]&0x3f)==0x24) {
    emit_pushmem((int)&reg_cop1_simple[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_double[(source[i]>>11)&0x1f]);
    emit_call((int)cvt_w_d);
  }
  if(opcode2[i]==0x11&&(source[i]&0x3f)==0x25) {
    emit_pushmem((int)&reg_cop1_double[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_double[(source[i]>>11)&0x1f]);
    emit_call((int)cvt_l_d);
  }
  
  if(opcode2[i]==0x10&&(source[i]&0x3f)==0x08) {
    emit_pushmem((int)&reg_cop1_double[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_simple[(source[i]>>11)&0x1f]);
    emit_call((int)round_l_s);
  }
  if(opcode2[i]==0x10&&(source[i]&0x3f)==0x09) {
    emit_pushmem((int)&reg_cop1_double[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_simple[(source[i]>>11)&0x1f]);
    emit_call((int)trunc_l_s);
  }
  if(opcode2[i]==0x10&&(source[i]&0x3f)==0x0a) {
    emit_pushmem((int)&reg_cop1_double[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_simple[(source[i]>>11)&0x1f]);
    emit_call((int)ceil_l_s);
  }
  if(opcode2[i]==0x10&&(source[i]&0x3f)==0x0b) {
    emit_pushmem((int)&reg_cop1_double[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_simple[(source[i]>>11)&0x1f]);
    emit_call((int)floor_l_s);
  }
  if(opcode2[i]==0x10&&(source[i]&0x3f)==0x0c) {
    emit_pushmem((int)&reg_cop1_simple[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_simple[(source[i]>>11)&0x1f]);
    emit_call((int)round_w_s);
  }
  if(opcode2[i]==0x10&&(source[i]&0x3f)==0x0d) {
    emit_pushmem((int)&reg_cop1_simple[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_simple[(source[i]>>11)&0x1f]);
    emit_call((int)trunc_w_s);
  }
  if(opcode2[i]==0x10&&(source[i]&0x3f)==0x0e) {
    emit_pushmem((int)&reg_cop1_simple[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_simple[(source[i]>>11)&0x1f]);
    emit_call((int)ceil_w_s);
  }
  if(opcode2[i]==0x10&&(source[i]&0x3f)==0x0f) {
    emit_pushmem((int)&reg_cop1_simple[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_simple[(source[i]>>11)&0x1f]);
    emit_call((int)floor_w_s);
  }
  
  if(opcode2[i]==0x11&&(source[i]&0x3f)==0x08) {
    emit_pushmem((int)&reg_cop1_double[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_double[(source[i]>>11)&0x1f]);
    emit_call((int)round_l_d);
  }
  if(opcode2[i]==0x11&&(source[i]&0x3f)==0x09) {
    emit_pushmem((int)&reg_cop1_double[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_double[(source[i]>>11)&0x1f]);
    emit_call((int)trunc_l_d);
  }
  if(opcode2[i]==0x11&&(source[i]&0x3f)==0x0a) {
    emit_pushmem((int)&reg_cop1_double[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_double[(source[i]>>11)&0x1f]);
    emit_call((int)ceil_l_d);
  }
  if(opcode2[i]==0x11&&(source[i]&0x3f)==0x0b) {
    emit_pushmem((int)&reg_cop1_double[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_double[(source[i]>>11)&0x1f]);
    emit_call((int)floor_l_d);
  }
  if(opcode2[i]==0x11&&(source[i]&0x3f)==0x0c) {
    emit_pushmem((int)&reg_cop1_simple[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_double[(source[i]>>11)&0x1f]);
    emit_call((int)round_w_d);
  }
  if(opcode2[i]==0x11&&(source[i]&0x3f)==0x0d) {
    emit_pushmem((int)&reg_cop1_simple[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_double[(source[i]>>11)&0x1f]);
    emit_call((int)trunc_w_d);
  }
  if(opcode2[i]==0x11&&(source[i]&0x3f)==0x0e) {
    emit_pushmem((int)&reg_cop1_simple[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_double[(source[i]>>11)&0x1f]);
    emit_call((int)ceil_w_d);
  }
  if(opcode2[i]==0x11&&(source[i]&0x3f)==0x0f) {
    emit_pushmem((int)&reg_cop1_simple[(source[i]>> 6)&0x1f]);
    emit_pushmem((int)&reg_cop1_double[(source[i]>>11)&0x1f]);
    emit_call((int)floor_w_d);
  }
  
  emit_addimm(ESP,8,ESP);
  emit_popa();
  //emit_loadreg(CSREG,rs);
  return;
}
#define fconv_assemble fconv_assemble_x86

void fcomp_assemble(int i,struct regstat *i_regs)
{
  signed char fs=get_reg(i_regs->regmap,FSREG);
  signed char temp=get_reg(i_regs->regmap,-1);
  assert(temp>=0);
  // Check cop1 unusable
  if(!cop1_usable) {
    signed char cs=get_reg(i_regs->regmap,CSREG);
    assert(cs>=0);
    emit_testimm(cs,0x20000000);
    int jaddr=(int)out;
    emit_jeq(0);
    add_stub(FP_STUB,jaddr,(int)out,i,cs,(int)i_regs,is_delayslot,0);
    cop1_usable=1;
  }
  
  if((source[i]&0x3f)==0x30) {
    emit_andimm(fs,~0x800000,fs);
    return;
  }
  
  if((source[i]&0x3e)==0x38) {
    // sf/ngle - these should throw exceptions for NaNs
    emit_andimm(fs,~0x800000,fs);
    return;
  }
  
  if(opcode2[i]==0x10) {
    emit_readword((int)&reg_cop1_simple[(source[i]>>16)&0x1f],temp);
    emit_flds(temp);
    emit_readword((int)&reg_cop1_simple[(source[i]>>11)&0x1f],temp);
    emit_flds(temp);
    emit_movimm(0x800000,temp);
    emit_or(fs,temp,fs);
    emit_xor(temp,fs,temp);
    emit_fucomip(1);
    emit_fpop();
    if((source[i]&0x3f)==0x31) emit_cmovnp_reg(temp,fs); // c_un_s
    if((source[i]&0x3f)==0x32) {emit_cmovne_reg(temp,fs);emit_cmovp_reg(temp,fs);} // c_eq_s
    if((source[i]&0x3f)==0x33) emit_cmovne_reg(temp,fs); // c_ueq_s
    if((source[i]&0x3f)==0x34) {emit_cmovnc_reg(temp,fs);emit_cmovp_reg(temp,fs);} // c_olt_s
    if((source[i]&0x3f)==0x35) emit_cmovnc_reg(temp,fs); // c_ult_s
    if((source[i]&0x3f)==0x36) {emit_cmova_reg(temp,fs);emit_cmovp_reg(temp,fs);} // c_ole_s
    if((source[i]&0x3f)==0x37) emit_cmova_reg(temp,fs); // c_ule_s
    if((source[i]&0x3f)==0x3a) emit_cmovne_reg(temp,fs); // c_seq_s
    if((source[i]&0x3f)==0x3b) emit_cmovne_reg(temp,fs); // c_ngl_s
    if((source[i]&0x3f)==0x3c) emit_cmovnc_reg(temp,fs); // c_lt_s
    if((source[i]&0x3f)==0x3d) emit_cmovnc_reg(temp,fs); // c_nge_s
    if((source[i]&0x3f)==0x3e) emit_cmova_reg(temp,fs); // c_le_s
    if((source[i]&0x3f)==0x3f) emit_cmova_reg(temp,fs); // c_ngt_s
    return;
  }
  if(opcode2[i]==0x11) {
    emit_readword((int)&reg_cop1_double[(source[i]>>16)&0x1f],temp);
    emit_fldl(temp);
    emit_readword((int)&reg_cop1_double[(source[i]>>11)&0x1f],temp);
    emit_fldl(temp);
    emit_movimm(0x800000,temp);
    emit_or(fs,temp,fs);
    emit_xor(temp,fs,temp);
    emit_fucomip(1);
    emit_fpop();
    if((source[i]&0x3f)==0x31) emit_cmovnp_reg(temp,fs); // c_un_d
    if((source[i]&0x3f)==0x32) {emit_cmovne_reg(temp,fs);emit_cmovp_reg(temp,fs);} // c_eq_d
    if((source[i]&0x3f)==0x33) emit_cmovne_reg(temp,fs); // c_ueq_d
    if((source[i]&0x3f)==0x34) {emit_cmovnc_reg(temp,fs);emit_cmovp_reg(temp,fs);} // c_olt_d
    if((source[i]&0x3f)==0x35) emit_cmovnc_reg(temp,fs); // c_ult_d
    if((source[i]&0x3f)==0x36) {emit_cmova_reg(temp,fs);emit_cmovp_reg(temp,fs);} // c_ole_d
    if((source[i]&0x3f)==0x37) emit_cmova_reg(temp,fs); // c_ule_d
    if((source[i]&0x3f)==0x3a) emit_cmovne_reg(temp,fs); // c_seq_d
    if((source[i]&0x3f)==0x3b) emit_cmovne_reg(temp,fs); // c_ngl_d
    if((source[i]&0x3f)==0x3c) emit_cmovnc_reg(temp,fs); // c_lt_d
    if((source[i]&0x3f)==0x3d) emit_cmovnc_reg(temp,fs); // c_nge_d
    if((source[i]&0x3f)==0x3e) emit_cmova_reg(temp,fs); // c_le_d
    if((source[i]&0x3f)==0x3f) emit_cmova_reg(temp,fs); // c_ngt_d
    return;
  }
  
  emit_pusha();
  if(opcode2[i]==0x10) {
    emit_pushmem((int)&reg_cop1_simple[(source[i]>>16)&0x1f]);
    emit_pushmem((int)&reg_cop1_simple[(source[i]>>11)&0x1f]);
    if((source[i]&0x3f)==0x30) emit_call((int)c_f_s);
    if((source[i]&0x3f)==0x31) emit_call((int)c_un_s);
    if((source[i]&0x3f)==0x32) emit_call((int)c_eq_s);
    if((source[i]&0x3f)==0x33) emit_call((int)c_ueq_s);
    if((source[i]&0x3f)==0x34) emit_call((int)c_olt_s);
    if((source[i]&0x3f)==0x35) emit_call((int)c_ult_s);
    if((source[i]&0x3f)==0x36) emit_call((int)c_ole_s);
    if((source[i]&0x3f)==0x37) emit_call((int)c_ule_s);
    if((source[i]&0x3f)==0x38) emit_call((int)c_sf_s);
    if((source[i]&0x3f)==0x39) emit_call((int)c_ngle_s);
    if((source[i]&0x3f)==0x3a) emit_call((int)c_seq_s);
    if((source[i]&0x3f)==0x3b) emit_call((int)c_ngl_s);
    if((source[i]&0x3f)==0x3c) emit_call((int)c_lt_s);
    if((source[i]&0x3f)==0x3d) emit_call((int)c_nge_s);
    if((source[i]&0x3f)==0x3e) emit_call((int)c_le_s);
    if((source[i]&0x3f)==0x3f) emit_call((int)c_ngt_s);
  }
  if(opcode2[i]==0x11) {
    emit_pushmem((int)&reg_cop1_double[(source[i]>>16)&0x1f]);
    emit_pushmem((int)&reg_cop1_double[(source[i]>>11)&0x1f]);
    if((source[i]&0x3f)==0x30) emit_call((int)c_f_d);
    if((source[i]&0x3f)==0x31) emit_call((int)c_un_d);
    if((source[i]&0x3f)==0x32) emit_call((int)c_eq_d);
    if((source[i]&0x3f)==0x33) emit_call((int)c_ueq_d);
    if((source[i]&0x3f)==0x34) emit_call((int)c_olt_d);
    if((source[i]&0x3f)==0x35) emit_call((int)c_ult_d);
    if((source[i]&0x3f)==0x36) emit_call((int)c_ole_d);
    if((source[i]&0x3f)==0x37) emit_call((int)c_ule_d);
    if((source[i]&0x3f)==0x38) emit_call((int)c_sf_d);
    if((source[i]&0x3f)==0x39) emit_call((int)c_ngle_d);
    if((source[i]&0x3f)==0x3a) emit_call((int)c_seq_d);
    if((source[i]&0x3f)==0x3b) emit_call((int)c_ngl_d);
    if((source[i]&0x3f)==0x3c) emit_call((int)c_lt_d);
    if((source[i]&0x3f)==0x3d) emit_call((int)c_nge_d);
    if((source[i]&0x3f)==0x3e) emit_call((int)c_le_d);
    if((source[i]&0x3f)==0x3f) emit_call((int)c_ngt_d);
  }
  emit_addimm(ESP,8,ESP);
  emit_popa();
  emit_loadreg(FSREG,fs);
  return;
}

void float_assemble(int i,struct regstat *i_regs)
{
  signed char temp=get_reg(i_regs->regmap,-1);
  assert(temp>=0);
  // Check cop1 unusable
  if(!cop1_usable) {
    signed char cs=get_reg(i_regs->regmap,CSREG);
    assert(cs>=0);
    emit_testimm(cs,0x20000000);
    int jaddr=(int)out;
    emit_jeq(0);
    add_stub(FP_STUB,jaddr,(int)out,i,cs,(int)i_regs,is_delayslot,0);
    cop1_usable=1;
  }
  
  if((source[i]&0x3f)==6) // mov
  {
    if(((source[i]>>11)&0x1f)!=((source[i]>>6)&0x1f)) {
      if(opcode2[i]==0x10) {
        emit_readword((int)&reg_cop1_simple[(source[i]>>11)&0x1f],temp);
        emit_flds(temp);
        emit_readword((int)&reg_cop1_simple[(source[i]>>6)&0x1f],temp);
        emit_fstps(temp);
      }
      if(opcode2[i]==0x11) {
        emit_readword((int)&reg_cop1_double[(source[i]>>11)&0x1f],temp);
        emit_fldl(temp);
        emit_readword((int)&reg_cop1_double[(source[i]>>6)&0x1f],temp);
        emit_fstpl(temp);
      }
    }
    return;
  }
  
  if((source[i]&0x3f)>3)
  {
    if(opcode2[i]==0x10) {
      emit_readword((int)&reg_cop1_simple[(source[i]>>11)&0x1f],temp);
      emit_flds(temp);
      if(((source[i]>>11)&0x1f)!=((source[i]>>6)&0x1f)) {
        emit_readword((int)&reg_cop1_simple[(source[i]>>6)&0x1f],temp);
      }
    }
    if(opcode2[i]==0x11) {
      emit_readword((int)&reg_cop1_double[(source[i]>>11)&0x1f],temp);
      emit_fldl(temp);
      if(((source[i]>>11)&0x1f)!=((source[i]>>6)&0x1f)) {
        emit_readword((int)&reg_cop1_double[(source[i]>>6)&0x1f],temp);
      }
    }
    if((source[i]&0x3f)==4) // sqrt
      emit_fsqrt();
    if((source[i]&0x3f)==5) // abs
      emit_fabs();
    if((source[i]&0x3f)==7) // neg
      emit_fchs();
    if(opcode2[i]==0x10) {
      emit_fstps(temp);
    }
    if(opcode2[i]==0x11) {
      emit_fstpl(temp);
    }
    return;
  }
  if((source[i]&0x3f)<4)
  {
    if(opcode2[i]==0x10) {
      emit_readword((int)&reg_cop1_simple[(source[i]>>11)&0x1f],temp);
      emit_flds(temp);
    }
    if(opcode2[i]==0x11) {
      emit_readword((int)&reg_cop1_double[(source[i]>>11)&0x1f],temp);
      emit_fldl(temp);
    }
    if(((source[i]>>11)&0x1f)!=((source[i]>>16)&0x1f)) {
      if(opcode2[i]==0x10) {
        emit_readword((int)&reg_cop1_simple[(source[i]>>16)&0x1f],temp);
        if((source[i]&0x3f)==0) emit_fadds(temp);
        if((source[i]&0x3f)==1) emit_fsubs(temp);
        if((source[i]&0x3f)==2) emit_fmuls(temp);
        if((source[i]&0x3f)==3) emit_fdivs(temp);
      }
      else if(opcode2[i]==0x11) {
        emit_readword((int)&reg_cop1_double[(source[i]>>16)&0x1f],temp);
        if((source[i]&0x3f)==0) emit_faddl(temp);
        if((source[i]&0x3f)==1) emit_fsubl(temp);
        if((source[i]&0x3f)==2) emit_fmull(temp);
        if((source[i]&0x3f)==3) emit_fdivl(temp);
      }
    }
    else {
      if((source[i]&0x3f)==0) emit_fadd(0);
      if((source[i]&0x3f)==1) emit_fsub(0);
      if((source[i]&0x3f)==2) emit_fmul(0);
      if((source[i]&0x3f)==3) emit_fdiv(0);
    }
    if(opcode2[i]==0x10) {
      if(((source[i]>>16)&0x1f)!=((source[i]>>6)&0x1f)) {
        emit_readword((int)&reg_cop1_simple[(source[i]>>6)&0x1f],temp);
      }
      emit_fstps(temp);
    }
    if(opcode2[i]==0x11) {
      if(((source[i]>>16)&0x1f)!=((source[i]>>6)&0x1f)) {
        emit_readword((int)&reg_cop1_double[(source[i]>>6)&0x1f],temp);
      }
      emit_fstpl(temp);
    }
    return;
  }
  
  if(opcode2[i]==0x10) { // Single precision
    emit_pusha();
    emit_pushmem((int)&reg_cop1_simple[(source[i]>> 6)&0x1f]);
    if((source[i]&0x3f)<4)
      emit_pushmem((int)&reg_cop1_simple[(source[i]>>16)&0x1f]);
    emit_pushmem((int)&reg_cop1_simple[(source[i]>>11)&0x1f]);
    switch(source[i]&0x3f)
    {
      case 0x00: emit_call((int)add_s);break;
      case 0x01: emit_call((int)sub_s);break;
      case 0x02: emit_call((int)mul_s);break;
      case 0x03: emit_call((int)div_s);break;
      case 0x04: emit_call((int)sqrt_s);break;
      case 0x05: emit_call((int)abs_s);break;
      case 0x06: emit_call((int)mov_s);break;
      case 0x07: emit_call((int)neg_s);break;
    }
    emit_addimm(ESP,(source[i]&0x3f)<4?12:8,ESP);
    emit_popa();
  }
  if(opcode2[i]==0x11) { // Double precision
    emit_pusha();
    emit_pushmem((int)&reg_cop1_double[(source[i]>> 6)&0x1f]);
    if((source[i]&0x3f)<4)
      emit_pushmem((int)&reg_cop1_double[(source[i]>>16)&0x1f]);
    emit_pushmem((int)&reg_cop1_double[(source[i]>>11)&0x1f]);
    switch(source[i]&0x3f)
    {
      case 0x00: emit_call((int)add_d);break;
      case 0x01: emit_call((int)sub_d);break;
      case 0x02: emit_call((int)mul_d);break;
      case 0x03: emit_call((int)div_d);break;
      case 0x04: emit_call((int)sqrt_d);break;
      case 0x05: emit_call((int)abs_d);break;
      case 0x06: emit_call((int)mov_d);break;
      case 0x07: emit_call((int)neg_d);break;
    }
    emit_addimm(ESP,(source[i]&0x3f)<4?12:8,ESP);
    emit_popa();
  }
}

void multdiv_assemble_x86(int i,struct regstat *i_regs)
{
  //  case 0x18: MULT
  //  case 0x19: MULTU
  //  case 0x1A: DIV
  //  case 0x1B: DIVU
  //  case 0x1C: DMULT
  //  case 0x1D: DMULTU
  //  case 0x1E: DDIV
  //  case 0x1F: DDIVU
  if(rs1[i]&&rs2[i])
  {
    if((opcode2[i]&4)==0) // 32-bit
    {
      if(opcode2[i]==0x18) // MULT
      {
        char m1=get_reg(i_regs->regmap,rs1[i]);
        char m2=get_reg(i_regs->regmap,rs2[i]);
        assert(m1>=0);
        assert(m2>=0);
        emit_mov(m1,EAX);
        emit_imul(m2);
      }
      if(opcode2[i]==0x19) // MULTU
      {
        char m1=get_reg(i_regs->regmap,rs1[i]);
        char m2=get_reg(i_regs->regmap,rs2[i]);
        assert(m1>=0);
        assert(m2>=0);
        emit_mov(m1,EAX);
        emit_mul(m2);
      }
      if(opcode2[i]==0x1A) // DIV
      {
        char d1=get_reg(i_regs->regmap,rs1[i]);
        char d2=get_reg(i_regs->regmap,rs2[i]);
        assert(d1>=0);
        assert(d2>=0);
        emit_mov(d1,EAX);
        emit_cdq();
        emit_test(d2,d2);
        emit_jeq((int)out+8);
        emit_idiv(d2);
      }
      if(opcode2[i]==0x1B) // DIVU
      {
        char d1=get_reg(i_regs->regmap,rs1[i]);
        char d2=get_reg(i_regs->regmap,rs2[i]);
        assert(d1>=0);
        assert(d2>=0);
        emit_mov(d1,EAX);
        emit_zeroreg(EDX);
        emit_test(d2,d2);
        emit_jeq((int)out+8);
        emit_div(d2);
      }
    }
    else // 64-bit
    {
      if(opcode2[i]==0x1C) // DMULT
      {
        char m1h=get_reg(i_regs->regmap,rs1[i]|64);
        char m1l=get_reg(i_regs->regmap,rs1[i]);
        char m2h=get_reg(i_regs->regmap,rs2[i]|64);
        char m2l=get_reg(i_regs->regmap,rs2[i]);
        assert(m1h>=0);
        assert(m2h>=0);
        assert(m1l>=0);
        assert(m2l>=0);
        emit_pushreg(m2h);
        emit_pushreg(m2l);
        emit_pushreg(m1h);
        emit_pushreg(m1l);
        emit_call((int)&mult64);
        emit_popreg(m1l);
        emit_popreg(m1h);
        emit_popreg(m2l);
        emit_popreg(m2h);
        char hih=get_reg(i_regs->regmap,HIREG|64);
        char hil=get_reg(i_regs->regmap,HIREG);
        if(hih>=0) emit_loadreg(HIREG|64,hih);
        if(hil>=0) emit_loadreg(HIREG,hil);
        char loh=get_reg(i_regs->regmap,LOREG|64);
        char lol=get_reg(i_regs->regmap,LOREG);
        if(loh>=0) emit_loadreg(LOREG|64,loh);
        if(lol>=0) emit_loadreg(LOREG,lol);
      }
      if(opcode2[i]==0x1D) // DMULTU
      {
        char m1h=get_reg(i_regs->regmap,rs1[i]|64);
        char m1l=get_reg(i_regs->regmap,rs1[i]);
        char m2h=get_reg(i_regs->regmap,rs2[i]|64);
        char m2l=get_reg(i_regs->regmap,rs2[i]);
        char temp=get_reg(i_regs->regmap,-1);
        assert(m1h>=0);
        assert(m2h>=0);
        assert(m1l>=0);
        assert(m2l>=0);
        assert(temp>=0);
        emit_mov(m1l,EAX);
        emit_mul(m2l);
        emit_storereg(LOREG,EAX);
        emit_mov(EDX,temp);
        emit_mov(m1h,EAX);
        emit_mul(m2l);
        emit_add(EAX,temp,temp);
        emit_adcimm(0,EDX);
        emit_storereg(HIREG,EDX);
        emit_mov(m2h,EAX);
        emit_mul(m1l);
        emit_add(EAX,temp,temp);
        emit_adcimm(0,EDX);
        emit_storereg(LOREG|64,temp);
        emit_mov(EDX,temp);
        emit_mov(m2h,EAX);
        emit_mul(m1h);
        emit_add(EAX,temp,EAX);
        emit_loadreg(HIREG,temp);
        emit_adcimm(0,EDX);
        emit_add(EAX,temp,EAX);
        emit_adcimm(0,EDX);
        // DEBUG
        /*
        emit_pushreg(m2h);
        emit_pushreg(m2l);
        emit_pushreg(m1h);
        emit_pushreg(m1l);
        emit_call((int)&multu64);
        emit_popreg(m1l);
        emit_popreg(m1h);
        emit_popreg(m2l);
        emit_popreg(m2h);
        char hih=get_reg(i_regs->regmap,HIREG|64);
        char hil=get_reg(i_regs->regmap,HIREG);
        if(hih>=0) emit_loadreg(HIREG|64,hih);  // DEBUG
        if(hil>=0) emit_loadreg(HIREG,hil);  // DEBUG
        */
        // Shouldn't be necessary
        //char loh=get_reg(i_regs->regmap,LOREG|64);
        //char lol=get_reg(i_regs->regmap,LOREG);
        //if(loh>=0) emit_loadreg(LOREG|64,loh);
        //if(lol>=0) emit_loadreg(LOREG,lol);
      }
      if(opcode2[i]==0x1E) // DDIV
      {
        char d1h=get_reg(i_regs->regmap,rs1[i]|64);
        char d1l=get_reg(i_regs->regmap,rs1[i]);
        char d2h=get_reg(i_regs->regmap,rs2[i]|64);
        char d2l=get_reg(i_regs->regmap,rs2[i]);
        assert(d1h>=0);
        assert(d2h>=0);
        assert(d1l>=0);
        assert(d2l>=0);
        //emit_pushreg(d2h);
        //emit_pushreg(d2l);
        //emit_pushreg(d1h);
        //emit_pushreg(d1l);
        emit_addimm(ESP,-16,ESP);
        emit_writeword_indexed(d2h,12,ESP);
        emit_writeword_indexed(d2l,8,ESP);
        emit_writeword_indexed(d1h,4,ESP);
        emit_writeword_indexed(d1l,0,ESP);
        emit_call((int)&div64);
        //emit_popreg(d1l);
        //emit_popreg(d1h);
        //emit_popreg(d2l);
        //emit_popreg(d2h);
        emit_readword_indexed(0,ESP,d1l);
        emit_readword_indexed(4,ESP,d1h);
        emit_readword_indexed(8,ESP,d2l);
        emit_readword_indexed(12,ESP,d2h);
        emit_addimm(ESP,16,ESP);
        char hih=get_reg(i_regs->regmap,HIREG|64);
        char hil=get_reg(i_regs->regmap,HIREG);
        char loh=get_reg(i_regs->regmap,LOREG|64);
        char lol=get_reg(i_regs->regmap,LOREG);
        if(hih>=0) emit_loadreg(HIREG|64,hih);
        if(hil>=0) emit_loadreg(HIREG,hil);
        if(loh>=0) emit_loadreg(LOREG|64,loh);
        if(lol>=0) emit_loadreg(LOREG,lol);
      }
      if(opcode2[i]==0x1F) // DDIVU
      {
        char d1h=get_reg(i_regs->regmap,rs1[i]|64);
        char d1l=get_reg(i_regs->regmap,rs1[i]);
        char d2h=get_reg(i_regs->regmap,rs2[i]|64);
        char d2l=get_reg(i_regs->regmap,rs2[i]);
        assert(d1h>=0);
        assert(d2h>=0);
        assert(d1l>=0);
        assert(d2l>=0);
        //emit_pushreg(d2h);
        //emit_pushreg(d2l);
        //emit_pushreg(d1h);
        //emit_pushreg(d1l);
        emit_addimm(ESP,-16,ESP);
        emit_writeword_indexed(d2h,12,ESP);
        emit_writeword_indexed(d2l,8,ESP);
        emit_writeword_indexed(d1h,4,ESP);
        emit_writeword_indexed(d1l,0,ESP);
        emit_call((int)&divu64);
        //emit_popreg(d1l);
        //emit_popreg(d1h);
        //emit_popreg(d2l);
        //emit_popreg(d2h);
        emit_readword_indexed(0,ESP,d1l);
        emit_readword_indexed(4,ESP,d1h);
        emit_readword_indexed(8,ESP,d2l);
        emit_readword_indexed(12,ESP,d2h);
        emit_addimm(ESP,16,ESP);
        char hih=get_reg(i_regs->regmap,HIREG|64);
        char hil=get_reg(i_regs->regmap,HIREG);
        char loh=get_reg(i_regs->regmap,LOREG|64);
        char lol=get_reg(i_regs->regmap,LOREG);
        if(hih>=0) emit_loadreg(HIREG|64,hih);
        if(hil>=0) emit_loadreg(HIREG,hil);
        if(loh>=0) emit_loadreg(LOREG|64,loh);
        if(lol>=0) emit_loadreg(LOREG,lol);
      }
    }
  }
  else
  {
    // Multiply by zero is zero.
    // MIPS does not have a divide by zero exception.
    // The result is undefined, we return zero.
    char hr=get_reg(i_regs->regmap,HIREG);
    char lr=get_reg(i_regs->regmap,LOREG);
    if(hr>=0) emit_zeroreg(hr);
    if(lr>=0) emit_zeroreg(lr);
  }
}
#define multdiv_assemble multdiv_assemble_x86

void do_preload_rhash(int r) {
  emit_movimm(0xf8,r);
}

void do_preload_rhtbl(int r) {
  // Don't need this for x86
}

void do_rhash(int rs,int rh) {
  emit_and(rs,rh,rh);
}

void do_miniht_load(int ht,int rh) {
  // Don't need this for x86.  The load and compare can be combined into
  // a single instruction (below)
}

void do_miniht_jump(int rs,int rh,int ht) {
  emit_cmpmem_indexed((int)mini_ht,rh,rs);
  emit_jne(jump_vaddr_reg[rs]);
  emit_jmpmem_indexed((int)mini_ht+4,rh);
}

void do_miniht_insert(int return_address,int rt,int temp) {
  emit_movimm(return_address,rt); // PC into link register
  //emit_writeword_imm(return_address,(int)&mini_ht[(return_address&0xFF)>>8][0]);
  emit_writeword(rt,(int)&mini_ht[(return_address&0xFF)>>3][0]);
  add_to_linker((int)out,return_address,1);
  emit_writeword_imm(0,(int)&mini_ht[(return_address&0xFF)>>3][1]);
}

// We don't need this for x86
void literal_pool(int n) {}
void literal_pool_jumpover(int n) {}

// CPU-architecture-specific initialization, not needed for x86
void arch_init() {}