machines/6502/machine.c

/*  6502 backend for vbcc
    (c) Volker Barthelmann 2020

*/                                                                             

#include "supp.h"
#include "vbc.h"

#include <math.h>

static char FILE_[]=__FILE__;

/*  Public data that MUST be there.                             */

/* Name and copyright. */
char cg_copyright[]="vbcc 6502 code-generator V0.5 (c) in 2022 by Volker Barthelmann";

/*  Commandline-flags the code-generator accepts:
    0: just a flag
    VALFLAG: a value must be specified
    STRINGFLAG: a string can be specified
    FUNCFLAG: a function will be called
    apart from FUNCFLAG, all other versions can only be specified once */
int g_flags[MAXGF]={0,0,
		    VALFLAG,0,0,
		    0,0,
		    VALFLAG,VALFLAG,0,0,
		    VALFLAG,0,0,0,
		    0,0,0,
		    0,0,0,0,0,0};

/* the flag-name, do not use names beginning with l, L, I, D or U, because
   they collide with the frontend */
char *g_flags_name[MAXGF]={"std-syntax","no-rax",
			   "volatile-regs","ieee","no-peephole",
			   "cbmascii","softstack",
			   "reg-args","int-args","mainargs","no-bank-vars",
			   "common-banknr","btmp-zpage","oldfp","large",
			   "glob-acc","avoid-bank-switch","manual-banking",
			   "atascii","65c02","nox","mega65","ce02","c02",
			   "div-bug","m65io"};

/* the results of parsing the command-line-flags will be stored here */
union ppi g_flags_val[MAXGF];

/*  Alignment-requirements for all types in bytes.              */
zmax align[MAX_TYPE+1];

/*  Alignment that is sufficient for every object.              */
zmax maxalign;

/*  CHAR_BIT for the target machine.                            */
zmax char_bit;

/*  sizes of the basic types (in bytes) */
zmax sizetab[MAX_TYPE+1];

/*  Minimum and Maximum values each type can have.              */
/*  Must be initialized in init_cg().                           */
zmax t_min[MAX_TYPE+1];
zumax t_max[MAX_TYPE+1];
zumax tu_max[MAX_TYPE+1];

/*  Names of all registers. will be initialized in init_cg(),
    register number 0 is invalid, valid registers start at 1 */
char *regnames[MAXR+1];

/*  The Size of each register in bytes.                         */
zmax regsize[MAXR+1];

/*  a type which can store each register. */
struct Typ *regtype[MAXR+1];

/*  regsa[reg]!=0 if a certain register is allocated and should */
/*  not be used by the compiler pass.                           */
int regsa[MAXR+1];

/*  Specifies which registers may be scratched by functions.    */
int regscratch[MAXR+1];

/* specifies the priority for the register-allocator, if the same
   estimated cost-saving can be obtained by several registers, the
   one with the highest priority will be used */
int reg_prio[MAXR+1];

/* an empty reg-handle representing initial state */
struct reg_handle empty_reg_handle={0,0};

/* Names of target-specific variable attributes.                */
char *g_attr_name[]={"__interrupt","__zpage","__nocpr",0};

#define INTERRUPT 1
#define ZPAGE 2
#define NOCOMPRESS 4

/****************************************/
/*  Private data and functions.         */
/****************************************/

#define STDSYNTAX  (g_flags[0]&USEDFLAG)
#define NORAX      (g_flags[1]&USEDFLAG)
#define VOL_GPRS   ((g_flags[2]&USEDFLAG)?g_flags_val[2].l:NUM_GPRS/2)
#define IEEE       (g_flags[3]&USEDFLAG)
#define NOPEEP     (g_flags[4]&USEDFLAG)
#define CBMASCII   (g_flags[5]&USEDFLAG)
#define SOFTSTACK  (g_flags[6]&USEDFLAG)
#define GPR_ARGS   ((g_flags[7]&USEDFLAG)?g_flags_val[7].l:8)
#define MAINARGS   (g_flags[9]&USEDFLAG)
#define NOBANKVARS (g_flags[10]&USEDFLAG)
#define COMMONBANK ((g_flags[11]&USEDFLAG)?g_flags_val[11].l:0)
#define BIGZPAGE   (g_flags[12]&USEDFLAG)
#define OLDFP      (g_flags[13]&USEDFLAG)
#define LARGE      (g_flags[14]&USEDFLAG)
#define GLOBACC    (g_flags[15]&USEDFLAG)
#define NOSWITCH   (g_flags[16]&USEDFLAG)
#define NOBANKING  (g_flags[17]&USEDFLAG)
#define ATASCII    (g_flags[18]&USEDFLAG)
#define C02        (g_flags[19]&USEDFLAG)
#define NOX        (g_flags[20]&USEDFLAG)
#define MEGA65     (g_flags[21]&USEDFLAG)
#define CE02       (g_flags[22]&USEDFLAG)
#define C02ALT     (g_flags[23]&USEDFLAG)
#define DIVBUG     (g_flags[24]&USEDFLAG)
#define M65IO      (g_flags[25]&USEDFLAG)



#define STR_NEAR "near"
#define STR_FAR "far"
#define STR_HUGE "huge"

#define PLA (-1)
#define JMPIND (-2)

static void function_top(FILE *,struct Var *,long);
static void function_bottom(FILE *f,struct Var *,long);

#define isreg(x) ((p->x.flags&(REG|DREFOBJ))==REG)
#define isacc(x) (isreg(x)&&(p->x.reg==ra||p->x.reg==rax))
#define isconst(x) ((p->x.flags&(KONST|DREFOBJ))==KONST)

#define iszpage(o) (((o)->flags&(REG|DREFOBJ))==REG||(((o)->flags&(VAR|DREFOBJ))==VAR&&(o)->v->tattr&ZPAGE))

#define isptr(r) ((r)>=FIRST_PAIR&&(r)<=LAST_PAIR)

static int q1reg,q2reg,zreg;

static char *ccs[]={"eq","ne","lt","ge","le","gt",""};
static char *logicals[]={"ora","eor","and"};
static char *arithmetics[]={"slw","srw","adc","sbc","mullw","divw","mod"};

/* alignment of basic data-types, used to initialize align[] */
static long malign[MAX_TYPE+1]=  {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1};
/* sizes of basic data-types, used to initialize sizetab[] */
static long msizetab[MAX_TYPE+1]={1,1,2,2,4,8,4,4,4,0,2,3,3,0,0,0,1,0};
static char *mregnames[MAXR+1+4];

/* Typenames (needed because of HAVE_EXT_TYPES). */
char *typname[]={"strange","char","short","int","long","long long",
                 "float","double","long double","void",
                 "near-pointer","far-pointer","huge-pointer",
                 "array","struct","union","enum","function"};


/* used to initialize regtyp[] */
static struct Typ ityp={INT},ctyp={CHAR},ftyp={FLOAT},lltyp={LLONG};

/* macros defined by the backend */
static char *marray[]={"__section(x)=__vattr(\"section(\"#x\")\")",
		       "__6502__",
		       "__SIZE_T_INT",
		       "__bank(x)=__vattr(\"bank(\"#x\")\")",
                       "__far=__attr(\"far\")",
                       "__near=__attr(\"near\")",
                       "__huge=__attr(\"huge\")",
		       0};

/* special registers */
static int ra=1, rx=2, ry=3, sp1=4,sp2=5,sp=6,fp,fp1,fp2;
static int t4=LAST_GPR,t3=LAST_GPR-1,t2=LAST_GPR-2,t1=LAST_GPR-3;
static int rax=7;
static int yval;
#define NOVAL 1000

#define REGDUMMY1 MAXR+1
#define REGDUMMY2 MAXR+2
#define REGDUMMY3 MAXR+3

static int t1,t2,f1,f2; /*tODO: remove*/

static int pushedacc,pushedx,nopeep,cbmascii,atascii,ieee;
static int storedacc,storedx;
static int c02,m65,ce02,zzero,noy;
static int divbug;
static int m65io;
static int manbank;
static char *jmpinst;
static int pass;
static int libsave;
static struct rpair rp2;
static int cbank;
static Var bankv;
static int bankvoffset;
static int bankcnum;
static obj zstore;
static int zstoreflag;
static int hasretval;

#define SECLEN 128
char *use_sec;
int use_bank=-1;

#define dt(t) (((t)&UNSIGNED)?udt[(t)&NQ]:sdt[(t)&NQ])
static char *sdt[MAX_TYPE+1]={"??","c","s","i","l","ll","f","d","ld","v","p"};
static char *udt[MAX_TYPE+1]={"??","uc","us","ui","ul","ull","f","d","ld","v","p"};

/* perhaps provide version with 8bit int? */
#define ISCHAR(t) ((t&NQ)==CHAR)
#define ISSHORT(t) ((t&NQ)==SHORT||(t&NQ)==INT||(t&NQ)==POINTER)
#define ISFPOINTER(t) ((t&NQ)==FPOINTER)
#define ISLONG(t) ((t&NQ)==LONG)
#define ISLLONG(t) ((t&NQ)==LLONG)

#define ISIDX(r) (r==rx)
#define ISRIDX(op) (isreg(op)&&ISIDX(p->op.reg))
#define ISPREG(op) (isreg(op)&&isptr(p->op.reg))

#define LONGM65(c) ((c)==ASSIGN||(c)==PUSH||(c)==GETRETURN||(c)==SETRETURN||((c)>=LSHIFT&&(c)<=MOD)||((c)>=OR&&(c)<=AND))

/* am */
#define IMM_IND 1
#define GPR_IND 2
#define ABS_IND 3

/* sections */
#define DATA 0
#define BSS 1
#define CODE 2
#define RODATA 3
#define SPECIAL 4

static long stack;
static int stack_valid;
static int section=-1,newobj;
static char *codename="\tsection\ttext",
  *dataname="\tsection\tdata",
  *bssname="\tsection\tbss",
  *rodataname="\tsection\trodata";

/* return-instruction */
static char *ret;

/* label at the end of the function (if any) */
static int exit_label;

/* assembly-prefixes for labels and external identifiers */
static char *labprefix="l",*idprefix="_";

/* variables to calculate the size and partitioning of the stack-frame
   in the case of FIXED_SP */
static long frameoffset,pushed,maxpushed,framesize;

static long localsize,rsavesize,rscnt,argsize;

static void emit_obj(FILE *f,struct obj *p,int t);

/* calculate the actual current offset of an object relativ to the
   stack-pointer; we use a layout like this:
   ------------------------------------------------
   | arguments to this function                   |
   ------------------------------------------------
   | caller-save registers [size=rsavesize]       |
   ------------------------------------------------
   | local variables [size=localsize]             |
   ------------------------------------------------
   | arguments to called functions [size=argsize] |
   ------------------------------------------------
   All sizes will be aligned as necessary.
   In the case of FIXED_SP, the stack-pointer will be adjusted at
   function-entry to leave enough space for the arguments and have it
   aligned to 16 bytes. Therefore, when calling a function, the
   stack-pointer is always aligned to 16 bytes.
   For a moving stack-pointer, the stack-pointer will usually point
   to the bottom of the area for local variables, but will move while
   arguments are put on the stack.

   This is just an example layout. Other layouts are also possible.
*/

#define bank(x) bankx((x),manbank)
#define sbank(x) bankx((x),0)

static int bankx(Var *v,int nobank)
{
  char *s=v->vattr;
  int n,r;
  if(!nobank&&s&&(s=strstr(s,"bank("))){
    if(sscanf(s+5,"%i",&n)==1)
      return n;
  }
  return -1;
}

static void ebank(FILE *f,int b)
{
  if(b>=0) emit(f,"%d",b);
  emit(f,"\n");
}

static long real_offset(struct obj *o)
{
  long off=zm2l(o->v->offset);
  if(off<0){
    /* function parameter */
    off=localsize+rsavesize-off-zm2l(maxalign);
  }

  off+=argsize;
  off+=zm2l(o->val.vmax);
  return off;
}

/*  Initializes an addressing-mode structure and returns a pointer to
    that object. Will not survive a second call! */
static struct obj *cam(int flags,int base,long offset)
{
  static struct obj obj;
  static struct AddressingMode am;
  obj.am=&am;
  am.flags=flags;
  am.base=base;
  am.offset=offset;
  return &obj;
}

/* changes to a special section, used for __section() */
static int special_section(FILE *f,struct Var *v)
{
  char *sec;
  if(v->tattr&ZPAGE){
    emit(f,"\tsection\tzpage\n");
  }else{
    if(!v->vattr) return 0;
    sec=strstr(v->vattr,"section(");
    if(!sec) return 0;
    sec+=strlen("section(");
    emit(f,"\tsection\t");
    while(*sec&&*sec!=')') emit_char(f,*sec++);
    emit(f,"\n");
  }
  if(f) section=SPECIAL;
  return 1;
}



#define chk_coll(x) do{if((x)==r||(x)==r1||(x)==r2) return 0;	\
    if(reg_pair((x),&rp)&&(rp.r1==r||rp.r2==r)) return 0;}while(0)

static int scratch(IC *p,int r,int isnext)
{
  int r1,r2;
  if(!p) return 1;
  if(reg_pair(r,&rp)){
    r1=rp.r1;
    r2=rp.r2;
  }else{
    r1=0;
    r2=0;
  }
  if(!isnext&&isreg(z)&&p->z.reg==r){
    if(!(p->q2.flags&REG))
      return 1;
    if(p->q2.reg==r||p->q2.reg==r1||p->q2.reg==r2)
      return 0;
    if(reg_pair(p->q2.reg,&rp))
      if(rp.r1==r||rp.r2==r)
	return 0;
    return 1;
  }
  while(p){
    if(p->code==LABEL||p->code==CALL)
      return 0;
    if(p->code>=BEQ&&p->code<=BRA)
      return 0;
    if(p->code==FREEREG||p->code==ALLOCREG){
      if(p->q1.reg==r)
	return 1;
      if(reg_pair(p->q1.reg,&rp)&&(rp.r1==r||rp.r2==r))
	return 1;
    }
    if(p->q1.am){
      chk_coll(p->q1.am->base);
      if(p->q1.am->flags!=IMM_IND) chk_coll(p->q1.am->idx);
    }
    if(p->q2.am){
      chk_coll(p->q2.am->base);
      if(p->q2.am->flags!=IMM_IND) chk_coll(p->q2.am->idx);
    }
    if(p->z.am){
      chk_coll(p->z.am->base);
      if(p->z.am->flags!=IMM_IND) chk_coll(p->z.am->idx);
    }
    if(p->q1.flags&REG) chk_coll(p->q1.reg);
    if(p->q2.flags&REG) chk_coll(p->q2.reg);
    if(p->z.flags&REG){
      if(p->z.flags&DREFOBJ)
	chk_coll(p->z.reg);
      else{
	if(p->z.reg==r)
	  return 1;
	if(reg_pair(p->z.reg,&rp)&&(rp.r1==r||rp.r2==r))
	  return 1;
      }
    }

    p=p->next;
  }
  return 1;
}

static int rsavecur;
static int in_isr;

static int get_reg(FILE *f,IC *p,int t)
{
  int r,r1,r2,pass,flag;

  for(pass=0;pass<5;pass++){
    for(r=MAXR;r>sp;r--){
      if(reg_pair(r,&rp)){
	r1=rp.r1;
	r2=rp.r2;
      }else{
	r1=0;
	r2=0;
      }
      if((pass==0||pass==3)&&(!regscratch[r]||in_isr))
	continue;
      if(pass<3){
	if(regs[r]) continue;
	if(r1&&(regs[r1]||regs[r2])) continue;
      }
      if(pass==2&&!(regs[r]&4))
	continue;
      if(p->q1.flags&REG){
	if(p->q1.reg==r||p->q1.reg==r1||p->q1.reg==r2) continue;
	if(r1==0&&reg_pair(p->q1.reg,&rp)&&(rp.r1==r||rp.r2==r)) continue;
      }
      if(p->q2.flags&REG){
	if(p->q2.reg==r||p->q2.reg==r1||p->q2.reg==r2) continue;
	if(r1==0&&reg_pair(p->q2.reg,&rp)&&(rp.r1==r||rp.r2==r)) continue;
      }
      if(p->z.flags&REG){
	if(p->z.reg==r||p->z.reg==r1||p->z.reg==r2) continue;
	if(r1==0&&reg_pair(p->z.reg,&rp)&&(rp.r1==r||rp.r2==r)) continue;
      }
      if(regok(r,t,1)){
	flag=8;
	if(regs[r]){
	  flag|=2;
	  if(p->code==COMPARE||p->code==TEST)
	    ierror(0);
	  if(regs[ra]){
	    emit(f,"\ttay\n");
	    yval=NOVAL;
	  }
	  if(r1){
	    emit(f,"\tlda\t%s\n",mregnames[r1]);
	    emit(f,"\tpha\n");
	    emit(f,"\tlda\t%s\n",mregnames[r2]);
	    emit(f,"\tpha\n");
	  }else{
	    emit(f,"\tlda\t%s\n",mregnames[r]);
	    emit(f,"\tpha\n");
	  }
	  if(regs[ra])
	    emit(f,"\ttya\n");
	}
	if(r1){
	  regs[r1]|=flag;
	  regs[r2]|=flag;
	}
	regs[r]|=flag;
	regused[r]=1;
	regused[r1]=1;
	regused[r2]=1;
	/*emit(f,"; p=%p r=%s\n",(void*)p,mregnames[r]);*/
	return r;
      }
    }
  }
  pric2(stdout,p);
  ierror(0);
}

static void get_acc(FILE *f, IC *p,int t)
{
  int r;
  if(isacc(z)) return;
  t&=NQ;
  if(ISCHAR(t)){
    if(1/*!isreg(q1)||(p->q1.reg!=ra&&p->q1.reg!=rax)*/){
      if((regs[ra]||regs[rax])&&!scratch(p,ra,0)&&!pushedacc){
	if(storedacc)
	  pushedacc=storedacc;
	else if(optsize||(regs[t1]&&regs[t2]&&regs[t3]&&regs[t4])){
	  emit(f,"\tpha\n");
	  pushedacc=-1;
	}else{
	  r=get_reg(f,p,CHAR);
	  emit(f,"\tsta\t%s\n",mregnames[r]);
	  pushedacc=r;
	}
      }
    }
  }else{
    if(1/*!isreg(q1)||p->q1.reg!=rax*/){
      if((regs[ra]||regs[rax])&&(!scratch(p,ra,0)||!scratch(p,rax,0))&&!pushedacc){
	if(!storedacc){
	  r=get_reg(f,p,CHAR);
	  emit(f,"\tsta\t%s\n",mregnames[r]);
	  pushedacc=r;
	}else
	  pushedacc=storedacc;
      }
      if((regs[rx]||regs[rax])&&!scratch(p,rax,0)&&!pushedx){
	if(!storedx){
	  r=get_reg(f,p,CHAR);
	  emit(f,"\tstx\t%s\n",mregnames[r]);
	  pushedx=r;
	}else
	  pushedx=storedx;
      }
    }
  }
}

static int cmp_get_acc(FILE *f,IC *p,IC *branch)
{
  if(!regs[ra]&&!regs[rax])
    return 0;
  if(branch==0&&pushedacc)
    return 0;
  if(branch&&isreg(q1)&&(p->q1.reg==ra||p->q1.reg==rax))
    if(branch->code==BEQ||branch->code==BNE||(p->typf&UNSIGNED))
      return 0;
  if(scratch(p,ra,0))
    return 0;
  if(!regs[rx]&&!regs[rax]){
    emit(f,"\ttax\n");
    pushedacc=rx;
  }
  emit(f,"\tpha\n");
  pushedacc=-1;
  return pushedacc;
}

static void reload_acc_opt(FILE *f,IC *p)
{
  if(pushedacc==0) return;
  if(pushedacc>0){
    while(p){
      if(p->code!=FREEREG) break;
      if(p->q1.reg==ra||p->q1.reg==rax){
	pushedacc=0;
	return;
      }
      p=p->next;
    }
  }
  if(pushedacc==-1)
    emit(f,"\tpla\n");
  else if(pushedacc==rx)
    emit(f,"\ttxa\n");
  else if(pushedacc==ry)
    emit(f,"\ttya\n");
  else if(pushedacc){
    emit(f,"\tlda\t%s\n",mregnames[pushedacc]);
    regs[pushedacc]&=~8;
  }
  pushedacc=0;
}

static void reload_acc(FILE *f)
{
  reload_acc_opt(f,0);
}

static void push(int i)
{
  pushed-=i;
  if(pushed<maxpushed)
    maxpushed=pushed;
}

static void pop(int i)
{
  pushed+=i;
  if(pushed>0) ierror(0);
}

static int indirect(obj *o)
{
  if(o->am){
    if(o->am->flags==ABS_IND&&o->am->idx==rx)
      return 0;
    else
      return 1;
  }
  if((o->flags&(DREFOBJ|KONST))==DREFOBJ)
    return 1;
  if((o->flags&(REG|VAR))!=VAR){
    if((o->flags&REG)&&(o->reg==ra||ISIDX(o->reg)||o->reg==rax))
      return 1;
    return 0;
  }
  if(o->v->storage_class==AUTO||o->v->storage_class==REGISTER)
    return 1;
  return 0;
}

void convfloat(void)
{
}  

void sety(FILE *f,int val)
{
  if(yval==val)
    return;
  if(val-yval==1)
    emit(f,"\tiny\n");
  else if(yval-val==1)
    emit(f,"\tdey\n");
  else{
    emit(f,"\tldy\t#%d\n",val);
    if(val<0||val>255)
      ierror(0);
  }
  yval=val;
}

static void cnv_fp(void)
{
  double d,mant;
  int exp;
  unsigned long t;

  if(ieee){
    vfloat=zld2zf(vldouble);
    memcpy((void*)&vmax,(void*)&vfloat,4);
  }else{
    d=zld2d(vldouble);
    mant=frexp(d,&exp);
    exp=(exp+127)&255;
    t=((unsigned long)(mant*8388608))&0xffffff;
    t|=((long)exp)<<24;
    
    t=((t&0xff)<<24)|((t&0xff00)<<8)|((t&0xff0000)>>8)|((t&0xff000000)>>24);
    vmax=l2zm((long)t);
    if(mant==0&&d==0) vmax=Z0;
  }
}

static void emit_ieee(FILE *f,union atyps *p,int t)
{
  unsigned char *ip=(unsigned char *)&p->vdouble;
  emit(f,"0x%02x%02x,0x%02x%02x",ip[1],ip[0],ip[3],ip[2]);
  if(t==DOUBLE||t==LDOUBLE)
    emit(f,",0x%02x%02x,0x%02x%02x",ip[5],ip[4],ip[7],ip[6]);
  emit(f,"\n");
}

static void emit_lobyte(FILE *f,obj *o,int t)
{
  if(o->flags&KONST){
    if(o->flags&DREFOBJ){
      eval_const(&o->val,o->dtyp);
       emit(f,"%d",zm2l(vmax));
    }else{
      eval_const(&o->val,t);
      if(ISFLOAT(t)) cnv_fp();
      emit(f,"#%d",zm2l(vmax)&255);
    }
  }else if(o->flags&VARADR){
    emit(f,"#<(");
    emit_obj(f,o,t);
    emit(f,")");
  }else if((o->flags&(REG|DREFOBJ))==REG){
    if(!reg_pair(o->reg,&rp))
      emit(f,"%s",mregnames[o->reg]);
    else
      emit(f,"%s",mregnames[rp.r1]);
  }else{
    if(zzero&&(o->flags&(DREFOBJ|KONST))==DREFOBJ) noy=1;
    emit_obj(f,o,t);
    noy=0;
  }
}

static void emit_hibyte(FILE *f,obj *o,int t)
{
  if(o->flags&KONST){
    if(o->flags&DREFOBJ){
      eval_const(&o->val,o->dtyp);
      emit(f,"%d",zm2l(vmax)+1);
    }else{
      eval_const(&o->val,t);
      if(ISFLOAT(t)) cnv_fp();
      emit(f,"#%d",(zm2l(vmax)>>8)&255);
    }
  }else if(o->flags&VARADR){
    emit(f,"#>(");
    emit_obj(f,o,t);
    emit(f,")");
  }else if((o->flags&(REG|DREFOBJ))==REG){
    if(o->reg>=FIRST_BIG&&o->reg<=LAST_BIGP){
      emit(f,"%s+1",mregnames[o->reg]);
    }else{
      if(!reg_pair(o->reg,&rp))
	ierror(0);
      emit(f,"%s",mregnames[rp.r2]);
    }
  }else{
    if(o->flags&VARADR)
      emit(f,"#");
    if(!(o->flags&DREFOBJ))
      o->val.vmax=zmadd(o->val.vmax,Z1);
    emit_obj(f,o,t);
    if(!(o->flags&DREFOBJ))
      o->val.vmax=zmsub(o->val.vmax,Z1);
  }
}

static void emit_byte3(FILE *f,obj *o,int t)
{
  if(o->flags&KONST){
    if(o->flags&DREFOBJ){
      eval_const(&o->val,o->dtyp);
      emit(f,"%d",zm2l(vmax)+2);
    }else{
      eval_const(&o->val,t);
      if(ISFLOAT(t)) cnv_fp();
      emit(f,"#%d",(zm2l(vmax)>>16)&255);
    }
  }else if((o->flags&(REG|DREFOBJ))==REG){
    emit(f,"%s+2",mregnames[o->reg]);
  }else if(o->flags&VARADR){
    emit(f,"#%d",bank(o->v));
  }else{
    if(!(o->flags&DREFOBJ))
      o->val.vmax=zmadd(o->val.vmax,l2zm(2L));
    emit_obj(f,o,t);
    if(!(o->flags&DREFOBJ))
      o->val.vmax=zmsub(o->val.vmax,l2zm(2L));
  }
}

static void emit_byte4(FILE *f,obj *o,int t)
{
  if(o->flags&KONST){
    if(o->flags&DREFOBJ){
      eval_const(&o->val,o->dtyp);
      emit(f,"%d",zm2l(vmax)+3);
    }else{
      eval_const(&o->val,t);
      if(ISFLOAT(t)) cnv_fp();
      emit(f,"#%d",(zm2l(vmax)>>24)&255);
    }
  }else if((o->flags&(REG|DREFOBJ))==REG){
    emit(f,"%s+3",mregnames[o->reg]);
  }else{
    if(!(o->flags&DREFOBJ))
      o->val.vmax=zmadd(o->val.vmax,l2zm(3L));
    emit_obj(f,o,t);
    if(!(o->flags&DREFOBJ))
      o->val.vmax=zmsub(o->val.vmax,l2zm(3L));
  }
}

static void ldq_offset(FILE *f,obj *o)
{
  if(o->am){
    if(o->am->flags==IMM_IND)
      emit(f,"\tldz\t#%ld\n",o->am->offset);
    else if(o->am->flags==GPR_IND||o->am->flags==ABS_IND){
      if(o->am->idx==ra)
	emit(f,"\ttaz\n");
      else{
	if(ISIDX(o->am->idx)){
	  if(o->am->flags==GPR_IND){
	    emit(f,"\tpha\n");
	    emit(f,"\tt%sa\n",mregnames[o->am->idx]);
	    emit(f,"\ttaz\n");
	    emit(f,"\tpla\n");
	  }
	}else
	  emit(f,"\tldz\t%s\n",mregnames[o->am->idx]);
      }
    }else
      ierror(0);
  }else if((o->flags&(DREFOBJ|KONST))==DREFOBJ){
    /*if(!zzero)*/ emit(f,"\tldz\t#0\n");
  }else if((o->flags&(VAR|REG|VARADR))==VAR&&(o->v->storage_class==AUTO||o->v->storage_class==REGISTER)){
    emit(f,"\tldz\t#%ld\n",real_offset(o));
  }
}

static void do_amload(FILE *f,obj *o)
{
  if(o->am->flags==GPR_IND||o->am->flags==ABS_IND){
    if(o->am->idx==ra)
      emit(f,"\ttay\n");
    else{
      if(ISIDX(o->am->idx)){
	if(o->am->flags==GPR_IND){
	  emit(f,"\tpha\n");
	  emit(f,"\tt%sa\n",mregnames[o->am->idx]);
	  emit(f,"\ttay\n");
	  emit(f,"\tpla\n");
	}
      }else{
	if(o->am->idx==ra)
	  emit(f,"\ttay\n");
	else
	  emit(f,"\tldy\t%s\n",mregnames[o->am->idx]);
      }
    }
  }else
    ierror(0);
}
static void do_lobyte(FILE *f,char *s,obj *o,int type)
{
  if(o->am){
    if(o->am->flags==IMM_IND)
      sety(f,o->am->offset);
    else{
      do_amload(f,o);
      yval=NOVAL;
    }
  }else if((o->flags&(DREFOBJ|KONST))==DREFOBJ){
    if(!zzero) sety(f,0);
  }else if((o->flags&(VAR|REG|VARADR))==VAR&&(o->v->storage_class==AUTO||o->v->storage_class==REGISTER)){
    sety(f,(int)real_offset(o));
  }
  emit(f,"\t%s\t",s);
  emit_lobyte(f,o,type);
  emit(f,"\n");
}

static void do_hibyte(FILE *f,char *s,obj *o,int type)
{
  int ami=0;
  if(o->am){
    if(o->am->flags==IMM_IND)
      sety(f,o->am->offset+1);
    else{
      do_amload(f,o);
      if(o->am->flags==GPR_IND){
	emit(f,"\tiny\n");
      }else{
	o->am->offset++;ami=1;
      }
      yval=NOVAL;
    }
  }else  if((o->flags&(DREFOBJ|KONST))==DREFOBJ){
    sety(f,1);
  }else if((o->flags&(VAR|REG|VARADR))==VAR&&(o->v->storage_class==AUTO||o->v->storage_class==REGISTER)){
    sety(f,(int)real_offset(o)+1);
  }
  emit(f,"\t%s\t",s);
  emit_hibyte(f,o,type);
  emit(f,"\n");
  if(ami) o->am->offset--;
}

static void do_byte3(FILE *f,char *s,obj *o,int type)
{
  int ami=0;
  if(o->am){
    if(o->am->flags==IMM_IND)
      sety(f,o->am->offset+2);
    else{
      do_amload(f,o);
      if(o->am->flags==GPR_IND){
	emit(f,"\tiny\n\tiny\n");
      }else{
	o->am->offset+=2;ami=1;
      }
      yval=NOVAL;
    }
  }else  if((o->flags&(DREFOBJ|KONST))==DREFOBJ){
    sety(f,2);
  }else if((o->flags&(VAR|REG|VARADR))==VAR&&(o->v->storage_class==AUTO||o->v->storage_class==REGISTER)){
    sety(f,(int)real_offset(o)+2);
  }
  emit(f,"\t%s\t",s);
  emit_byte3(f,o,type);
  emit(f,"\n");
  if(ami) o->am->offset-=2;
}

static void do_byte4(FILE *f,char *s,obj *o,int type)
{
  int ami=0;
  if(o->am){
    if(o->am->flags==IMM_IND)
      sety(f,o->am->offset+3);
    else{
      do_amload(f,o);
      if(o->am->flags==GPR_IND){
	emit(f,"\tiny\n\tiny\n\tiny\n");
      }else{
	o->am->offset+=3;ami=1;
      }
      yval=NOVAL;
    }
  }else  if((o->flags&(DREFOBJ|KONST))==DREFOBJ){
    sety(f,3);
  }else if((o->flags&(VAR|REG|VARADR))==VAR&&(o->v->storage_class==AUTO||o->v->storage_class==REGISTER)){
    sety(f,(int)real_offset(o)+3);
  }
  emit(f,"\t%s\t",s);
  emit_byte4(f,o,type);
  emit(f,"\n");
  if(ami) o->am->offset-=3;
}

static void load_lobyte(FILE *f,obj *o,int t)
{
  if((o->flags&(REG|DREFOBJ))==REG){
    if(o->reg==ra||o->reg==rax)
      return;
    if(o->reg==rx){
      emit(f,"\ttxa\n");
      return;
    }
  }
  do_lobyte(f,"lda",o,t);
}

static void load_hibyte(FILE *f,obj *o,int t)
{
  if((o->flags&REG)&&(o->reg==rx||o->reg==rax))
    emit(f,"\ttxa\n");
  else
    do_hibyte(f,"lda",o,t);
}

static void store_lobyte(FILE *f,obj *o,int t)
{
  if((o->flags&(REG|DREFOBJ))==REG){
    if(o->reg==ra||o->reg==rax)
      return;
    if(o->reg==rx){
      emit(f,"\ttax\n");
      return;
    }
  }
  do_lobyte(f,"sta",o,t);
}

static void store_hibyte(FILE *f,obj *o,int t)
{
  if((o->flags&REG)&&(o->reg==rx||o->reg==rax))
    emit(f,"\ttax\n");
  else
    do_hibyte(f,"sta",o,t);
}

static void load_acc(FILE *f,obj *o,int type)
{
  if((o->flags&REG)&&(o->reg==ra||o->reg==rax))
    return;
  if(!ISCHAR(type)){
    if(indirect(o)){
      do_hibyte(f,"lda",o,type);
      emit(f,"\ttax\n");
    }else
      do_hibyte(f,"ldx",o,type);
  }
  if((o->flags&(REG|DREFOBJ))==REG&&o->reg==rx)
    emit(f,"\ttxa\n");
  else
    do_lobyte(f,"lda",o,type);
}

static void store_acc(FILE *f,obj *o,int type)
{
  if((o->flags&(DREFOBJ|KONST))==DREFOBJ&&((!(o->flags&REG))||!isptr(o->reg))){
    ierror(0);
  }
  if((o->flags&REG)&&(o->reg==ra||o->reg==rax))
    return;
  if((o->flags&REG)&&o->reg==rx){
    emit(f,"\ttax\n");
    return;
  }
  store_lobyte(f,o,type);
  if(!ISCHAR(type)){
    if(indirect(o)){
      /*TODO: save accu */
      emit(f,"\ttxa\n");
      store_hibyte(f,o,type);
    }else
      do_hibyte(f,"stx",o,type);
  }
}

static void load_reg(FILE *f,int r,struct obj *o,int type)
{
  static obj ro;
  if(ISIDX(r)&&!indirect(o)){
    static char ldr[4]="ldr";
    ldr[2]=mregnames[r][0];
    do_lobyte(f,ldr,o,type);
    return;
  }
  ro.flags=REG;
  ro.reg=r;
  load_lobyte(f,o,type);
  store_lobyte(f,&ro,type);
  if(!ISCHAR(type)){
    load_hibyte(f,o,type);
    store_hibyte(f,&ro,type);
  }
}

static void store_reg(FILE *f,int r,struct obj *o,int type)
{
  static obj ro;
  if(ISIDX(r)){
    if((o->flags&(REG|DREFOBJ))==REG){
      if(o->reg==r)
	return;
      if(o->reg==ra){
	emit(f,"\tt%sa\n",mregnames[r]);
	return;
      }
    }
    if(!indirect(o)){
      static char str[4]="str";
      str[2]=mregnames[r][0];
      do_lobyte(f,str,o,type);
      return;
    }
  }
  ro.flags=REG;
  ro.reg=r;
  if(r!=ra&&r!=rax)
    load_acc(f,&ro,type);
  store_acc(f,o,type);
}

static struct fpconstlist {
  struct fpconstlist *next;
  int label;
  int t;
  union atyps val;
} *firstfpc;

static int addfpconst(struct obj *o,int t)
{
  struct fpconstlist *p=firstfpc;
  t&=NQ;
  if(t==LDOUBLE) t=DOUBLE;
  for(p=firstfpc;p;p=p->next){
    if(t==p->t){
      eval_const(&p->val,t);
      if(t==FLOAT&&zldeqto(vldouble,zf2zld(o->val.vfloat))) return p->label;
      if(t==DOUBLE&&zldeqto(vldouble,zd2zld(o->val.vdouble))) return p->label;
      if(t==LONG&&zmeqto(vmax,zl2zm(o->val.vlong))) return p->label;
      if(t==LLONG&&zmeqto(vmax,zll2zm(o->val.vllong))) return p->label;
    }
  }
  p=mymalloc(sizeof(struct fpconstlist));
  p->next=firstfpc;
  p->t=t;
  p->label=++label;
  p->val=o->val;
  firstfpc=p;
  return p->label;
}

/* generate code to load the address of a local variable into register r */
static void load_laddr(FILE *f,int r,struct obj *o)
{
  long l=real_offset(o);
  /* assumes acc is available */
  if(!reg_pair(r,&rp)) ierror(0);
  emit(f,"\tlda\t%s\n",mregnames[fp]);
  if(l!=0)
    emit(f,"\tclc\n");
  if(l&255)
    emit(f,"\tadc\t#%ld\n",l&255);
  emit(f,"\tsta\t%s\n",mregnames[rp.r1]);
  emit(f,"\tlda\t%s\n",mregnames[fp2]);
  if(l!=0)
    emit(f,"\tadc\t#%ld\n",(l>>8)&255);
  emit(f,"\tsta\t%s\n",mregnames[rp.r2]);
}

/* generate code to load the address of a variable into register r */
static void load_address(FILE *f,int r,struct obj *o,int t)
{
  if(o->flags&DREFOBJ){
    o->flags&=~DREFOBJ;
    load_reg(f,r,o,POINTER);
    o->flags|=DREFOBJ;
  }else if((o->flags&(REG|DREFOBJ))==REG){
    if(!reg_pair(r,&rp)) ierror(0);
    emit(f,"\tlda\t#>%s\n",mregnames[o->reg]);
    emit(f,"\tsta\t%s\n",mregnames[rp.r2]);
    emit(f,"\tlda\t#<%s\n",mregnames[o->reg]);
    emit(f,"\tsta\t%s\n",mregnames[rp.r1]);    
  }else if(o->flags&VAR){
    if(o->v->storage_class==AUTO||o->v->storage_class==REGISTER){
      load_laddr(f,r,o);
    }else{
      o->flags|=VARADR;
      load_reg(f,r,o,POINTER);
      o->flags&=~VARADR;
    }
  }else if((o->flags&(KONST|DREFOBJ))==KONST){
    int l=addfpconst(o,t);
    if(!ieee) ierror(0);
    if(!reg_pair(r,&rp)) ierror(0);
    emit(f,"\tlda\t#>%s%d\n",labprefix,l);
    emit(f,"\tsta\t%s\n",mregnames[rp.r2]);
    emit(f,"\tlda\t#<%s%d\n",labprefix,l);
    emit(f,"\tsta\t%s\n",mregnames[rp.r1]);    
  }else
    ierror(0);
}


/*  Yields log2(x)+1 or 0. */
static long pof2(zumax x)
{
  zumax p;int ln=1;
  p=ul2zum(1L);
  while(ln<=32&&zumleq(p,x)){
    if(zumeqto(x,p)) return ln;
    ln++;p=zumadd(p,p);
  }
  return 0;
}

static void incmem(FILE *f,obj *o,int t,int op,int x)
{
  int i,idx=0;
  char *s;
  if(ce02&&ISSHORT(t)){
    if(((o->flags&(REG|DREFOBJ))==REG&&(op==ADD||op==SUB))||
       (op==LSHIFT&&!indirect(o)&&!o->am)){
      do{
	emit(f,"\t%s\t%s\n",op==ADD?"inw":(op==SUB?"dew":"asw"),mregnames[o->reg]);
      }while(--x);
      return;
    }
  }
  if((o->flags&(REG|DREFOBJ))==REG&&ISIDX(o->reg)){
    static char buf[4]="   ";
    idx=1;s=buf;
    if(op==ADD){s[0]='i';s[1]='n';}else{s[0]='d';s[1]='e';}
    s[2]=mregnames[o->reg][0];
  }else if(op==ADD)
    s="inc";
  else if(op==SUB)
    s="dec";
  else if(op==LSHIFT)
    s="asl";
  else if(op==RSHIFT&&(t&UNSIGNED))
    s="lsr";
  else if(op==RSHIFT){
    s="cmp\t#128\n\tror";
  }else
    ierror(0);
  if(ISCHAR(t)){
    for(i=0;i<x;i++){
      if(idx){
	emit(f,"\t%s\n",s);
      }else{
	emit(f,"\t%s\t",s);
	emit_obj(f,o,t);
	emit(f,"\n");
      }
    }
  }else{
    for(i=0;i<x;i++){
      if(op==SUB){
	if(m65&&ISLONG(t)){
	  emit(f,"\tdeq\t");
	  emit_obj(f,o,t);
	  emit(f,"\n");
	}else if(ce02&&iszpage(o)){
	  emit(f,"\tdew\n");
	}else{
	  /* caller mus make sure accu is available */
	  load_lobyte(f,o,t);
	  emit(f,"\tbne\t%s%d\n",labprefix,++label);
	  emit(f,"\tdec\t");
	  emit_hibyte(f,o,t);
	  emit(f,"\n");
	  if(ISLONG(t)){
	    ierror(0);
	  }
	  emit(f,"%s%d:\n",labprefix,label);
	  emit(f,"\tdec\t");
	  emit_lobyte(f,o,t);
	  emit(f,"\n");
	}
      }else if(op==ADD){
	if(!optspeed&&m65&&ISLONG(t)){
	  emit(f,"\tinq\t");
	  emit_obj(f,o,t);
	  emit(f,"\n");
	}else if(!optspeed&&ce02&&iszpage(o)){
	  emit(f,"\tinw\t");
	  emit_lobyte(f,o,t);
	  emit(f,"\n");
	  if(ISLONG(t)){
	    emit(f,"\tbne\t%s%d\n",labprefix,++label);
	    emit(f,"\tinw\t");
	    emit_byte3(f,o,t);
	    emit(f,"\n");
	    emit(f,"%s%d:\n",labprefix,label);
	  }
	}else{
	  emit(f,"\t%s\t",s);
	  emit_lobyte(f,o,t);
	  emit(f,"\n");
	  emit(f,"\tbne\t%s%d\n",labprefix,++label);
	  emit(f,"\t%s\t",s);
	  emit_hibyte(f,o,t);
	  emit(f,"\n");
	  if(ISLONG(t)){
	    emit(f,"\tbne\t%s%d\n",labprefix,label);
	    emit(f,"\t%s\t",s);
	    emit_byte3(f,o,t);
	    emit(f,"\n");
	    emit(f,"\tbne\t%s%d\n",labprefix,label);
	    emit(f,"\t%s\t",s);
	    emit_byte4(f,o,t);
	    emit(f,"\n");
	  }
	  emit(f,"%s%d:\n",labprefix,label);
	}
      }else if(op==LSHIFT){
	if(ce02&&!indirect(o)&&!o->am){
	  emit(f,"\tasw\t");
	  emit_obj(f,o,t);
	  emit(f,"\n");
	}else{
	  emit(f,"\tasl\t");
	  emit_lobyte(f,o,t);
	  emit(f,"\n");
	  emit(f,"\trol\t");
	  emit_hibyte(f,o,t);
	  emit(f,"\n");
	}
	if(ISLONG(t)){
	  do_byte3(f,"rol",o,t);
	  do_byte4(f,"rol",o,t);
	}
      }else if(op==RSHIFT&&(t&UNSIGNED)){
	/*emit(f,"\tclc\n");
	  emit(f,"\tror\t");*/
	if(ISLONG(t)){
	  do_byte4(f,"lsr",o,t);
	  do_byte3(f,"ror",o,t);
	  do_hibyte(f,"ror",o,t);
	}else
	  do_hibyte(f,"lsr",o,t);
	do_lobyte(f,"ror",o,t);
      }else if(op==RSHIFT){
	if(ce02){
	  emit(f,"\tasr\t");
	}else{
	  if(ISLONG(t))
	    do_byte4(f,"lda",o,t);
	  else
	    load_hibyte(f,o,t);
	  emit(f,"\tcmp\t#128\n");
	  emit(f,"\tror\t");
	}
	if(ISLONG(t))
	  emit_byte4(f,o,t);
	else
	  emit_hibyte(f,o,t);
	emit(f,"\n");
	if(ISLONG(t)){
	  do_byte3(f,"ror",o,t);
	  do_hibyte(f,"ror",o,t);
	}
	do_lobyte(f,"ror",o,t);
      }else{
	printf("op=%d\n",op);
	ierror(0);
      }
    }
  }
}

static void preload_obj(FILE *f,IC *p,obj *o)
{
  int r,pa=0,px=0,longm65=0;long of;

  if((p->typf&VOLATILE)||(p->typf2&VOLATILE)||
     ((p->q1.flags&DREFOBJ)&&(p->q1.dtyp&(VOLATILE|PVOLATILE)))||
     ((p->q2.flags&DREFOBJ)&&(p->q2.dtyp&(VOLATILE|PVOLATILE)))||
     ((p->z.flags&DREFOBJ)&&(p->z.dtyp&(VOLATILE|PVOLATILE))))
    emit(f,"; volatile barrier\n");


  if(m65){
    int t;
    if(o==&p->q1)
      t=q1typ(p);
    else{
      if(o==&p->q2) t=q2typ(p);
      else if(o==&p->z) t=ztyp(p);
      else ierror(0);
      if(ISLONG(t)&&LONGM65(p->code)) longm65=1;
    }
  }

  if((o->flags&(VAR|REG))==VAR&&(o->v->storage_class==AUTO||o->v->storage_class==REGISTER)&&(((of=real_offset(o))+zm2l(szof(o->v->vtyp))>255)||longm65)){
    r=get_reg(f,p,POINTER);
    if(o->flags&DREFOBJ){
      if(p->code==GETRETURN&&(p->q1.reg==ra||p->q1.reg==rax)){
	emit(f,"\tsta\t%s\n",mregnames[t1]);
	emit(f,"\tstx\t%s\n",mregnames[t2]);
	pa=px=1;
      }else
	get_acc(f,p,INT);
    }else{
      if(p->code==GETRETURN&&(p->q1.reg==ra||p->q1.reg==rax)){
	emit(f,"\tsta\t%s\n",mregnames[t1]);
	pa=1;
      }else
	cmp_get_acc(f,p,0);
    }
    if(!reg_pair(r,&rp)) ierror(0);
    emit(f,"\tlda\t%s\n",mregnames[fp1]);
    emit(f,"\tclc\n");
    if(of&0xff)
      emit(f,"\tadc\t#%ld\n",of&0xff);
    emit(f,"\tsta\t%s\n",mregnames[rp.r1]);
    emit(f,"\tlda\t%s\n",mregnames[fp2]);
    if(1/*of&0xff00*/)
      emit(f,"\tadc\t#%ld\n",(of>>8)&0xff);
    emit(f,"\tsta\t%s\n",mregnames[rp.r2]);
    o->flags|=REG;
    o->reg=r;
    if(o->flags&DREFOBJ){
      if(!zzero) sety(f,0);
      emit(f,"\tlda\t(%s)%s\n",mregnames[r],zzero?"":",y");
      emit(f,"\ttxa\n");
      sety(f,1);
      emit(f,"\tlda\t(%s),y\n",mregnames[r]);
      emit(f,"\tsta\t%s\n",mregnames[rp.r2]);
      emit(f,"\tstx\t%s\n",mregnames[rp.r1]);
    }else{
      o->flags|=DREFOBJ;
      o->dtyp=POINTER;
    }
    if(pa){ emit(f,"\tlda\t%s\n",mregnames[t1]); pa=0;}
    if(px){ emit(f,"\tldx\t%s\n",mregnames[t2]); px=0;}
  }

  if((o->flags&(DREFOBJ|KONST))==DREFOBJ&&(!(o->flags&REG)||!isptr(o->reg))&&(!(o->flags&VAR)||!(o->v->tattr&ZPAGE))&&!ISFPOINTER(o->dtyp)){
    if(p->code==GETRETURN&&(p->q1.reg==ra||p->q1.reg==rax)){
      emit(f,"\tsta\t%s\n",mregnames[t1]);
      pa=1;
    }else
      cmp_get_acc(f,p,0);
    r=get_reg(f,p,POINTER);
    o->flags&=~DREFOBJ;
    load_reg(f,r,o,POINTER);
    o->flags|=REG|DREFOBJ;
    o->reg=r;
    if(pa){ emit(f,"\tlda\t%s\n",mregnames[t1]); pa=0;}
  }
}

static void far_copy(FILE *f,IC *p)
{
  int b;long l;
  get_acc(f,p,INT);
  if(p->code==PUSH){
    if(!reg_pair(LAST_PAIR,&rp)) ierror(0);
    emit(f,"\tlda\t%s\n",mregnames[sp]);
    if(pushed) emit(f,"\tclc\n");
    if(pushed&0xff) emit(f,"\tadc\t#%d\n",(pushed&0xff));
    emit(f,"\tsta\t%s\n",mregnames[rp.r1]);
    emit(f,"\tlda\t%s+1\n",mregnames[sp]);
    if(pushed) emit(f,"\tadc\t#%d\n",((pushed>>8)&0xff));
    emit(f,"\tsta\t%s\n",mregnames[rp.r2]);
    pushed+=zm2l(p->q2.val.vmax);
    emit(f,"\tldx\t#%d\n",bankcnum);
  }else if(p->z.flags&DREFOBJ){
    if(!reg_pair(LAST_PAIR,&rp)) ierror(0);
    p->z.flags&=~DREFOBJ;
    load_lobyte(f,&p->z,FPOINTER);
    emit(f,"\tsta\t%s\n",mregnames[rp.r1]);
    load_hibyte(f,&p->z,FPOINTER);
    emit(f,"\tsta\t%s\n",mregnames[rp.r2]);
    if(indirect(&p->z)){
      do_byte3(f,"lda",&p->z,FPOINTER);
      emit(f,"\ttax\n");
    }else
      do_byte3(f,"ldx",&p->z,FPOINTER);
  }else{
    load_address(f,LAST_PAIR,&p->z,POINTER);
    b=bank(p->z.v);
    emit(f,"\tldx\t#%d\n",b>=0?b:bankcnum);
  }
  if(p->q1.flags&DREFOBJ){
    if(!reg_pair(LAST_PAIR-1,&rp)) ierror(0);
    p->q1.flags&=~DREFOBJ;
    load_lobyte(f,&p->q1,FPOINTER);
    emit(f,"\tsta\t%s\n",mregnames[rp.r1]);
    load_hibyte(f,&p->q1,FPOINTER);
    emit(f,"\tsta\t%s\n",mregnames[rp.r2]);
    if(indirect(&p->q1)){
      do_byte3(f,"lda",&p->q1,FPOINTER);
      emit(f,"\ttay\n");
    }else
      do_byte3(f,"ldy",&p->q1,FPOINTER);
  }else{
    load_address(f,LAST_PAIR-1,&p->q1,POINTER);
    b=bank(p->q1.v);
    sety(f,b>=0?b:bankcnum);
  }
  l=zm2l(p->q2.val.vmax);
  emit(f,"\tlda\t#%d\n",(l>>8)&0xff);
  emit(f,"\tsta\t%s__bankcopy_len+1\n",idprefix);
  emit(f,"\tlda\t#%d\n",(l)&0xff);
  emit(f,"\tsta\t%s__bankcopy_len\n",idprefix);
  emit(f,"\tlda\t#%d\n",cbank>=0?cbank:bankcnum);
  emit(f,"\tjsr\t%s__bankcopy\n",idprefix);
  yval=NOVAL;
}

static void load_far(FILE *f,IC *p,obj *o,int t)
{
  int pushed=0;
  if(!(o->flags&DREFOBJ)) ierror(0);
  o->flags&=~DREFOBJ;
  t&=NQ;
  if(zmeqto(sizetab[t],Z0)) return;
  /*get_acc(f,p,INT);*/
  if(pushedacc==t3||pushedacc==t4) ierror(0);
  if(pushedx==t3||pushedx==t4) ierror(0);
  if(regs[ra]||regs[rax]){
    if(isacc(q1)||isacc(q2)||!isacc(z)){
      pushed=1;
      emit(f,"\tpha\n");
      if(regs[rax]) emit(f,"\ttxa\n\tpha\n");
    }
  }
  load_reg(f,LAST_PAIR,o,POINTER);
  if(!indirect(o))
    do_byte3(f,"ldy",o,CHAR);
  else{
    do_byte3(f,"lda",o,CHAR);
    emit(f,"\ttay\n");
  }
  emit(f,"\tldx\t#%d\n",bankvoffset);
  emit(f,"\tlda\t#%d\n",cbank>=0?cbank:bankcnum);
  emit(f,"\tjsr\t%s__bankload%d\n",idprefix,(int)zm2l(sizetab[t]));
  yval=NOVAL;
  o->flags=VAR;
  o->v=&bankv;
  o->val.vmax=l2zm((long)bankvoffset);
  bankvoffset+=zm2l(sizetab[t]);
  if(pushed){
    if(regs[rax]) emit(f,"\tpla\n\ttax\n");
    emit(f,"\tpla\n");
  }
}

static void load_banked(FILE *f,IC *p,obj *o,int t)
{
  int pushed=0,m;
  if(o->flags&DREFOBJ) t=o->dtyp;
  t&=NQ;
  if(zmeqto(sizetab[t],Z0)) return;
  /*get_acc(f,p,INT);*/
  if(pushedacc==t3||pushedacc==t4) ierror(0);
  if(pushedx==t3||pushedx==t4) ierror(0);
  if(regs[ra]||regs[rax]){
    if(isacc(q1)||isacc(q2)||!isacc(z)){
      pushed=1;
      emit(f,"\tpha\n");
      if(regs[rax]||regs[rx]) emit(f,"\ttxa\n\tpha\n");
    }
  }
  m=o->flags;
  o->flags&=~DREFOBJ;
  load_address(f,LAST_PAIR,o,POINTER);
  o->flags=m;
  emit(f,"\tldx\t#%d\n",bankvoffset);
  emit(f,"\tlda\t#%d\n",cbank>=0?cbank:bankcnum);
  sety(f,bank(o->v));
  emit(f,"\tjsr\t%s__bankload%d\n",idprefix,(int)zm2l(sizetab[t]));
  yval=NOVAL;
  o->v=&bankv;
  o->val.vmax=l2zm((long)bankvoffset);
  bankvoffset+=zm2l(sizetab[t]);
  if(pushed){
    if(regs[rax]||regs[rx]) emit(f,"\tpla\n\ttax\n");
    emit(f,"\tpla\n");
  }
}

static void preload(FILE *f,IC *p)
{
  int r,mra=regs[ra],mrax=regs[rax];
  int bq1=-1,bq2=-1,bz=-1,sb=-1,zbuf=0;

  if(((p->q1.flags&DREFOBJ)&&p->q1.am&&(p->q1.am->flags==GPR_IND||p->q1.am->flags==ABS_IND)&&p->q1.am->idx==ra)||
     ((p->q2.flags&DREFOBJ)&&p->q2.am&&(p->q2.am->flags==GPR_IND||p->q2.am->flags==ABS_IND)&&p->q2.am->idx==ra)||
     ((p->z.flags&DREFOBJ)&&p->z.am&&(p->z.am->flags==GPR_IND||p->z.am->flags==ABS_IND)&&p->z.am->idx==ra)
     ){
    if(pushedacc>0)
      r=pushedacc;
    else{
      r=get_reg(f,p,CHAR);
      emit(f,"\tsta\t%s\n",mregnames[r]);
    }
    pushedacc=r;
    if((p->q1.flags&DREFOBJ)&&p->q1.am&&(p->q1.am->flags==GPR_IND||p->q1.am->flags==ABS_IND)&&p->q1.am->idx==ra)
      p->q1.am->idx=r;
    if((p->q2.flags&DREFOBJ)&&p->q2.am&&(p->q2.am->flags==GPR_IND||p->q2.am->flags==ABS_IND)&&p->q2.am->idx==ra)
      p->q2.am->idx=r;
    if((p->z.flags&DREFOBJ)&&p->z.am&&(p->z.am->flags==GPR_IND||p->z.am->flags==ABS_IND)&&p->z.am->idx==ra)
      p->z.am->idx=r;
  }

  if(p->code==GETRETURN&&p->q1.reg==ra&&!regs[ra])
    regs[ra]=1;

  if(p->code==GETRETURN&&p->q1.reg==rax&&!regs[rax])
    regs[rax]=1;

  bankvoffset=0;

  if(!NOBANKVARS){
    if((p->q1.flags&(VAR|VARADR))==VAR) bq1=bank(p->q1.v);
    if((p->q2.flags&(VAR|VARADR))==VAR) bq2=bank(p->q2.v);
    if((p->z.flags&(VAR|VARADR))==VAR) bz=bank(p->z.v);

    if((p->q1.flags&(VAR|VARADR))==(VAR|VARADR)){
      r=bank(p->q1.v);
      /*if(r>=0&&r!=cbank) ierror(0);*/
    }
    
    if((p->code==ASSIGN||p->code==PUSH)&&!zmleq(p->q2.val.vmax,l2zm(4L))){
      if(p->q1.flags&DREFOBJ) preload_obj(f,p,&p->q1);
      if(p->z.flags&DREFOBJ) preload_obj(f,p,&p->z);
      return;
    }

    if(p->code!=CALL){
      /* TODO: some optimizations possible */
      if(bq1>=0&&bq1!=cbank){
	if(cbank<0&&!NOSWITCH)
	  sb=bq1;
	else
	  load_banked(f,p,&p->q1,q1typ(p));
      }
      if(bq2>=0&&bq2!=cbank){
	if((bq2==sb||(cbank<0&&sb<0))&&!NOSWITCH)
	  sb=bq2;
	else
	  load_banked(f,p,&p->q2,q2typ(p));
      }
      if(bz>=0&&bz!=cbank&&(p->z.flags&DREFOBJ)){
	if((bz==sb||(cbank<0&&sb<0))||!NOSWITCH)
	  sb=bz;
	else
	  load_banked(f,p,&p->z,ztyp(p));
      }
      
      if(sb>=0){
	if(NOSWITCH) ierror(0);
	sety(f,sb);
	emit(f,"\tjsr\t%s__bankswitch\n",idprefix);
	yval=NOVAL;
      }
    }
  }

  if((p->q1.flags&DREFOBJ)&&ISFPOINTER(p->q1.dtyp)&&p->code!=CALL) load_far(f,p,&p->q1,q1typ(p));
  if((p->q2.flags&DREFOBJ)&&ISFPOINTER(p->q2.dtyp)) load_far(f,p,&p->q2,q2typ(p));

  if(isacc(q2)){
    static obj o;
    int t=q2typ(p);
    r=get_reg(f,p,t);
    o.flags=REG;
    o.reg=r;
    store_acc(f,&o,t);
    p->q2.reg=r;
    if(!pushedacc){
      if((t&NQ)==CHAR)
	storedacc=r;
      else{
	if(!reg_pair(r,&rp)) ierror(0);
	storedacc=rp.r1;
	storedx=rp.r2;
      }
    }
  }

  if((p->code==ADDI2P||p->code==SUBIFP)&&ISRIDX(q2)){
    static obj o;
    if(p->q2.reg==rx){
      if(pushedx>0) r=pushedx;
      else if(storedx>0) r=storedx;
      else r=get_reg(f,p,CHAR);
    }else
      r=get_reg(f,p,CHAR);
    o.flags=REG;
    o.reg=r;
    store_reg(f,p->q2.reg,&o,CHAR);
    p->q2.reg=r;
    storedx=r;
  }

  if(p->code!=ADDRESS){
    preload_obj(f,p,&p->q1);
    if((p->q1.flags&(DREFOBJ|VAR|REG))==(DREFOBJ|VAR|REG)&&
       (p->q2.flags&(DREFOBJ|VAR|REG))==(DREFOBJ|VAR)&&
       p->q1.v==p->q2.v){
      p->q2.flags|=REG;
      p->q2.reg=p->q1.reg;
    }
    if((p->q1.flags&(DREFOBJ|VAR|REG))==(DREFOBJ|VAR|REG)&&
       (p->z.flags&(DREFOBJ|VAR|REG))==(DREFOBJ|VAR)&&
       p->q1.v==p->z.v){
      p->z.flags|=REG;
      p->z.reg=p->q1.reg;
    }
  }

  preload_obj(f,p,&p->q2);
  if((p->q2.flags&(DREFOBJ|VAR|REG))==(DREFOBJ|VAR|REG)&&
     (p->z.flags&(DREFOBJ|VAR|REG))==(DREFOBJ|VAR)&&
     p->q2.v==p->z.v){
    p->z.flags|=REG;
    p->z.reg=p->q2.reg;
  }


  if((p->z.flags&DREFOBJ)&&ISFPOINTER(p->z.dtyp)) zbuf=1;
  if((p->z.flags&(VAR|DREFOBJ))==VAR){
    bz=bank(p->z.v);
    if(bz>=0&&bz!=cbank) zbuf=1;
  }
  
  if(zbuf&&!NOBANKVARS){
    zstore=p->z;
    p->z.flags=VAR;
    p->z.v=&bankv;
    p->z.val.vmax=l2zm((long)bankvoffset);
    zstoreflag=1;
    /*bankvoffset+=zm2l(sizetab[p->typf&NQ]);*/
  }else{
    preload_obj(f,p,&p->z);

    if(isreg(z)){
      r=0;
      if(p->q1.am&&p->q1.am->base==p->z.reg){
	r=get_reg(f,p,POINTER);
	cmp_get_acc(f,p,0);
	if(!reg_pair(p->q1.am->base,&rp)) ierror(0);
	if(!reg_pair(r,&rp2)) ierror(0);
	emit(f,"\tlda\t%s\n",mregnames[rp.r1]);
	emit(f,"\tsta\t%s\n",mregnames[rp2.r1]);
	emit(f,"\tlda\t%s\n",mregnames[rp.r2]);
	emit(f,"\tsta\t%s\n",mregnames[rp2.r2]);
	p->q1.am->base=p->q1.reg=r;
      }else if(!p->q1.am&&(p->q1.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&p->q1.reg==p->z.reg){
	r=get_reg(f,p,POINTER);
	cmp_get_acc(f,p,0);
	if(!reg_pair(p->z.reg,&rp)) ierror(0);
	if(!reg_pair(r,&rp2)) ierror(0);
	emit(f,"\tlda\t%s\n",mregnames[rp.r1]);
	emit(f,"\tsta\t%s\n",mregnames[rp2.r1]);
	emit(f,"\tlda\t%s\n",mregnames[rp.r2]);
	emit(f,"\tsta\t%s\n",mregnames[rp2.r2]);
	p->q1.reg=r;
      }
      if(p->q2.am&&p->q2.am->base==p->z.reg){
	if(r==0){
	  r=get_reg(f,p,POINTER);
	  cmp_get_acc(f,p,0);
	  if(!reg_pair(p->q2.am->base,&rp)) ierror(0);
	  if(!reg_pair(r,&rp2)) ierror(0);
	  emit(f,"\tlda\t%s\n",mregnames[rp.r1]);
	  emit(f,"\tsta\t%s\n",mregnames[rp2.r1]);
	  emit(f,"\tlda\t%s\n",mregnames[rp.r2]);
	  emit(f,"\tsta\t%s\n",mregnames[rp2.r2]);
	}
	p->q2.am->base=p->q2.reg=r;
      }else if(!p->q2.am&&(p->q2.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&p->q2.reg==p->z.reg){
	if(r==0){
	  r=get_reg(f,p,POINTER);
	  cmp_get_acc(f,p,0);
	  if(!reg_pair(p->z.reg,&rp)) ierror(0);
	  if(!reg_pair(r,&rp2)) ierror(0);
	  emit(f,"\tlda\t%s\n",mregnames[rp.r1]);
	  emit(f,"\tsta\t%s\n",mregnames[rp2.r1]);
	  emit(f,"\tlda\t%s\n",mregnames[rp.r2]);
	  emit(f,"\tsta\t%s\n",mregnames[rp2.r2]);
	}
	p->q2.reg=r;
      }
    }
    if(isacc(z)){
      if(isacc(q2)){
	if(p->q2.reg==rax){
	  r=get_reg(f,p,INT);
	  if(!reg_pair(r,&rp)) ierror(0);
	  emit(f,"\tsta\t%s\n",mregnames[rp.r1]);
	  emit(f,"\tstx\t%s\n",mregnames[rp.r2]);
	  storedacc=rp.r1;
	  storedx=rp.r2;
	}else{
	  r=get_reg(f,p,CHAR);
	  emit(f,"\tsta\t%s\n",mregnames[r]);
	  storedacc=r;
	}
	p->q2.reg=r;
	if(isacc(q1))
	  p->q1.reg=r;
      }
    }
  }     
 
  reload_acc(f);

  regs[ra]=mra;
  regs[rax]=mrax;
}


/* compare if two objects are the same */
static int compare_objects(struct obj *o1,struct obj *o2)
{
  if((o1->flags&(REG|DREFOBJ))==REG&&(o2->flags&(REG|DREFOBJ))==REG&&o1->reg==o2->reg)
    return 1;
  if(o1->flags==o2->flags){
    if(o1->am){
      if(o2->am){
	if(o1->am->flags!=o2->am->flags||o1->am->base!=o2->am->base||
	   o1->am->idx!=o2->am->idx||o1->am->offset!=o2->am->offset)
	  return 0;
	else
	  return 1;
      }else
	return 0;
    }else if(o2->am)
      return 0;
    if(!(o1->flags&VAR)||(o1->v==o2->v&&zmeqto(o1->val.vmax,o2->val.vmax))){
      if(!(o1->flags&REG)||o1->reg==o2->reg){
        return 1;
      }
    }
  }
  return 0;
}

/* save the result (in zreg) into p->z */
void save_result(FILE *f,struct IC *p)
{
  ierror(0);
}

/* prints an object */
static void emit_obj(FILE *f,struct obj *p,int t)
{
  if(p->am){
    if(p->am->flags==IMM_IND)
      emit(f,"(%s),y ;am(%ld)",mregnames[p->am->base],p->am->offset);
    else if(p->am->flags==GPR_IND)
      emit(f,"(%s),y ;am(%s)",mregnames[p->am->base],mregnames[p->am->idx]);
    else if(p->am->flags==ABS_IND){
      emit(f,"%ld",p->am->offset);
      if(p->am->v){
	Var *v=p->am->v;
	if(v->storage_class==EXTERN)
	  emit(f,"+%s%s",idprefix,v->identifier);
	else
	  emit(f,"+%s%ld",labprefix,zm2l(v->offset));
      }
      if(ISIDX(p->am->idx))
	emit(f,",%s ;am(%s)",mregnames[p->am->idx],mregnames[p->am->idx]);
      else
	emit(f,",y ;am(%s)",mregnames[p->am->idx]);
    }else
      ierror(0);
    return;
  }
  if((p->flags&(KONST|DREFOBJ))==(KONST|DREFOBJ)){
    emitval(f,&p->val,p->dtyp&NU);
    return;
  }
  if(p->flags&DREFOBJ) emit(f,"(");
  if(p->flags&REG){
    emit(f,"%s",mregnames[p->reg]);
  }else if(p->flags&VAR) {
    if(p->v->storage_class==AUTO||p->v->storage_class==REGISTER)
      emit(f,"(%s),%s",mregnames[fp],noy==2?"z":"y");
    else{
      if(!zmeqto(l2zm(0L),p->val.vmax)){emitval(f,&p->val,MAXINT);emit(f,"+");}
      if(p->v->storage_class==STATIC){
        emit(f,"%s%ld",labprefix,zm2l(p->v->offset));
      }else{
        emit(f,"%s%s",idprefix,p->v->identifier);
      }
    }
  }
  if(p->flags&KONST){
    if(/*ieee&&((t&NQ)==DOUBLE||(t&NQ)==LDOUBLE)*/ISFLOAT(t))
      emit(f,"%s%d",labprefix,addfpconst(p,t));
    else
      emitval(f,&p->val,t&NU);
  }
  if(p->flags&DREFOBJ) emit(f,")%s",noy==0?",y":(noy==1?"":",z"));
}

/*  Test if there is a sequence of FREEREGs containing FREEREG reg.
    Used by peephole. */
static int exists_freereg(struct IC *p,int reg)
{
  while(p&&(p->code==FREEREG||p->code==ALLOCREG)){
    if(p->code==FREEREG&&p->q1.reg==reg) return 1;
    p=p->next;
  }
  return 0;
}

/* search for possible addressing-modes */
static void peephole(struct IC *p)
{
  int c,c2,r;struct IC *p2,*free_base,*use;struct AddressingMode *am;

  for(;p;p=p->next){
    c=p->code;
    if(c!=FREEREG&&c!=ALLOCREG&&(c!=SETRETURN||!isreg(q1)||p->q1.reg!=p->z.reg)) exit_label=0;
    if(c==LABEL) exit_label=p->typf;

    /* Try const(reg) */
    if((c==ADDI2P||c==SUBIFP)&&ISPREG(z)&&(p->q2.flags&(KONST|DREFOBJ))==KONST&&!ISFPOINTER(p->typf2)){
      int base;zmax of;struct obj *o;IC *dub=0;
      eval_const(&p->q2.val,p->typf);
      if(c==SUBIFP) of=zmsub(l2zm(0L),vmax); else of=vmax;
      if(zmleq(Z0,of)&&zmleq(of,l2zm(255L))){
	r=p->z.reg;
	if(isreg(q1)&&isptr(p->q1.reg)) base=p->q1.reg; else base=r;
	o=0;free_base=0;
	for(p2=p->next;p2;p2=p2->next){
	  c2=p2->code;
	  if(c2==CALL||c2==LABEL||(c2>=BEQ&&c2<=BRA)) break;
	  if(c2==FREEREG&&p2->q1.reg==p->z.reg) free_base=p2;
	  if(c2!=FREEREG&&(p2->q1.flags&(REG|DREFOBJ))==REG&&p2->q1.reg==r) break;
	  if(c2!=FREEREG&&(p2->q2.flags&(REG|DREFOBJ))==REG&&p2->q2.reg==r) break;
	  if(c2!=CALL&&(c2<LABEL||c2>BRA)/*&&c2!=ADDRESS*/){
	    int t,mc;
	    if((c2==ASSIGN|c2==PUSH)&&(p2->typf&NQ)==CHAR&&!zmeqto(p2->q2.val.vmax,Z1))
	      mc=1;
	    else
	      mc=0;
	    if(!o&&(c2==ADD||c2==SUB||c2==AND||c2==OR||c2==XOR)&&/*(p2->typf&NQ)==CHAR&&*/!p2->q1.am&&!p2->z.am&&
	       (p2->q1.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&
	       p2->q1.flags==p2->z.flags&&p2->q1.reg==r&&p2->z.reg==r){
	      o=&p2->q1;use=p2;
	      dub=p2;
	      continue;
	    }
	    if(!p2->q1.am&&(p2->q1.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&p2->q1.reg==r){
	      if(o||mc) break;
	      t=q1typ(p2)&NQ;
	      if(t>POINTER||ISFLOAT(t)) break;
	      if(m65&&ISLONG(t)) break;
	      o=&p2->q1;use=p2;
	    }
	    if(!p2->q2.am&&(p2->q2.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&p2->q2.reg==r){
	      if(o||mc) break;
	      t=q2typ(p2)&NQ;
	      if(t>POINTER||ISFLOAT(t)) break;
	      if(m65&&ISLONG(t)) break;
	      o=&p2->q2;use=p2;
	    }
	    if(!p2->z.am&&(p2->z.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&p2->z.reg==r){
	      if(o||mc) break;
	      t=ztyp(p2)&NQ;
	      if(t>POINTER||ISFLOAT(t)) break;
	      if(m65&&ISLONG(t)) break;
	      o=&p2->z;use=p2;
	    }
	  }
	  if(c2==FREEREG||(p2->z.flags&(REG|DREFOBJ))==REG){
	    int m;
	    if(c2==FREEREG)
	      m=p2->q1.reg;
	    else{
	      m=p2->z.reg;
	      if(o==&p->q1||o==&p->q2) break;
	    }
	    if(m==r){
	      if(o){
		o->am=am=mymalloc(sizeof(*am));
		am->flags=IMM_IND;
		am->base=base;
		am->offset=(int)zm2l(of);
		if(ISPREG(q1)){
		  p->code=c=NOP;p->q1.flags=p->q2.flags=p->z.flags=0;
		}else{
		  p->code=c=ASSIGN;p->q2.flags=0;
		  p->typf=p->typf2;p->q2.val.vmax=sizetab[p->typf2&NQ];
		}
	      }
	      if(dub){
		dub->z=*o;
		dub->z.am=mymalloc(sizeof(*am));
		*dub->z.am=*o->am;
	      }
	      if(free_base) move_IC(use,free_base);
	      break;
	    }
	    if(c2!=FREEREG&&m==base) break;
	    continue;
	  }
        }
      }
    }
    /* Try reg,reg */
    if(c==ADDI2P&&(p->typf&NU)==(UNSIGNED|CHAR)&&!ISFPOINTER(p->typf2)&&isreg(q2)/*&&p->q2.reg!=ra*/&&ISPREG(z)&&(ISPREG(q1)||p->q2.reg!=p->z.reg)){
      int base,idx,ind;struct obj *o;IC *free_idx,*dub=0;
      r=p->z.reg;idx=p->q2.reg;
      if(ISPREG(q1)) base=p->q1.reg; else base=r;
      if((p->q1.flags&VARADR)||(p->q1.flags&(KONST|DREFOBJ))==KONST)
	ind=0;
      else
	ind=1;
      o=0;free_base=free_idx=use=0;
      for(p2=p->next;p2;p2=p2->next){
        c2=p2->code;
        if(c2==CALL||c2==LABEL||(c2>=BEQ&&c2<=BRA)) break;
	if(c2==FREEREG&&p2->q1.reg==p->z.reg) free_base=p2;
	if(c2==FREEREG&&p2->q1.reg==p->q2.reg) free_idx=p2;
        if(c2!=FREEREG&&(p2->q1.flags&(REG|DREFOBJ))==REG&&p2->q1.reg==r) break;
        if(c2!=FREEREG&&(p2->q2.flags&(REG|DREFOBJ))==REG&&p2->q2.reg==r) break;
        if((p2->z.flags&(REG|DREFOBJ))==REG&&idx!=r){
	  if(p2->z.reg==idx) break;
	  if(reg_pair(p2->z.reg,&rp)){
	    if(rp.r1==idx) break;
	    if(rp.r2==idx) break;
	  }
	}

        if(c2!=CALL&&(c2<LABEL||c2>BRA)/*&&c2!=ADDRESS*/){
	  if(!o&&(c2==ADD||c2==SUB||c2==AND||c2==OR||c2==XOR)&&/*(p2->typf&NQ)==CHAR&&*/!p2->q1.am&&!p2->z.am&&
	     (p2->q1.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&
	     p2->q1.flags==p2->z.flags&&p2->q1.reg==r&&p2->z.reg==r){
	    o=&p2->q1;use=p2;
	    dub=p2;
	    continue;
	  }
          if(!p2->q1.am&&(p2->q1.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&p2->q1.reg==r){
            if(o||(ind&&(q1typ(p2)&NQ)!=CHAR)) break;
	    if(ieee&&ISFLOAT(q1typ(p2))) break;
            o=&p2->q1;use=p2;
          }
          if(!p2->q2.am&&(p2->q2.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&p2->q2.reg==r){
            if(o||(ind&&(q2typ(p2)&NQ)!=CHAR)) break;
	    if(ieee&&ISFLOAT(q2typ(p2))) break;
            o=&p2->q2;use=p2;
          }
          if(!p2->z.am&&(p2->z.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&p2->z.reg==r){
            if(o||(ind&&(ztyp(p2)&NQ)!=CHAR)) break;
	    if(ieee&&ISFLOAT(ztyp(p2))) break;
            o=&p2->z;use=p2;
          }
        }
	
        if(c2==FREEREG||(p2->z.flags&(REG|DREFOBJ))==REG){
          int m;
          if(c2==FREEREG)
            m=p2->q1.reg;
          else
            m=p2->z.reg;
          if(m==r){
            if(o){
              o->am=am=mymalloc(sizeof(*am));
	      am->idx=idx;
	      if(ind){
		am->flags=GPR_IND;
		am->base=base;
		if(ISPREG(q1)){
		  p->code=c=NOP;p->q1.flags=p->q2.flags=p->z.flags=0;
		}else{
		  p->code=c=ASSIGN;p->q2.flags=0;
		  p->typf=p->typf2;p->q2.val.vmax=sizetab[p->typf2&NQ];
		}
	      }else{
		am->flags=ABS_IND;
		am->base=0;
		eval_const(&p->q1.val,MAXINT);
		am->offset=zm2l(vmax);
		if(p->q1.flags&VARADR)
		  am->v=p->q1.v;
		else
		  am->v=0;
		p->code=c=NOP;p->q1.flags=p->q2.flags=p->z.flags=0;
	      }
	      if(dub){
		dub->z=*o;
		dub->z.am=mymalloc(sizeof(*am));
		*dub->z.am=*o->am;
	      }
	      if(free_idx) move_IC(use,free_idx);
	      if(free_base) move_IC(use,free_base);
            }
            break;
          }
          if(c2!=FREEREG&&m==base) break;
          continue;
        }
      }
    }
  }
}

static void pr(FILE *f,struct IC *p)
{
  int r;

  if(zstoreflag){
    int off;
    if(p->z.flags!=VAR||p->z.v!=&bankv) ierror(0);
    off=(int)zm2l(p->z.val.vmax);
    p->z=zstore;
    get_acc(f,p,INT);
    if(zstore.flags&DREFOBJ){
      if(!ISFPOINTER(zstore.dtyp)) ierror(0);
      zstore.flags&=~DREFOBJ;
      load_reg(f,LAST_PAIR,&zstore,POINTER);
      if(indirect(&zstore)){
	do_byte3(f,"lda",&zstore,FPOINTER);
	emit(f,"\ttay\n");
      }else
	do_byte3(f,"ldy",&zstore,FPOINTER);
      yval=NOVAL;
    }else{
      load_address(f,LAST_PAIR,&zstore,p->typf);
      r=bank(zstore.v);
      sety(f,r>=0?r:bankcnum);
    }
    emit(f,"\tldx\t#%d\n",off);
    emit(f,"\tlda\t#%d\n",cbank>=0?cbank:bankcnum);
    emit(f,"\tjsr\t%s__bankstore%d\n",idprefix,(int)zm2l(sizetab[p->typf&NQ]));
    yval=NOVAL;
    zstoreflag=0;
  }

  for(r=1;r<=MAXR;r++){
    if(regs[r]&8)
      regs[r]&=~8;
  }
  for(r=FIRST_GPR;r<=LAST_GPR;r++){
    int ta=0;
    if(regs[r]&2){
      if(regs[ra]&&!pushedacc){
	emit(f,"\ttay\n");
	yval=NOVAL;
	ta=1;
      }
      emit(f,"\tpla\n");
      emit(f,"\tsta\t%s\n",mregnames[r]);
      regs[r]&=~2;
    }
    if(ta)
      emit(f,"\ttya\n");
  }
  if(pushedx){
    emit(f,"\tldx\t%s\n",mregnames[pushedx]);
    pushedx=0;
  }

  reload_acc_opt(f,p->next);

  storedacc=0;
  storedx=0;
}

struct cmplist {struct cmplist *next;int from,to,mode;} *first_cmplist;

static void add_cmplist(int from, int to, int mode)
{
  struct cmplist *new;
  new=mymalloc(sizeof(*new));
  new->next=first_cmplist;
  new->from=from;
  new->to=to;
  new->mode=mode;
  first_cmplist=new;
}

static void incsp(FILE *f,long of)
{
  if(of==0) return;
  if(of==1||of==-1){
    static obj o;
    o.flags=REG;
    o.reg=sp;
    if(of==1)
      incmem(f,&o,INT,ADD,1);
    else
      incmem(f,&o,INT,SUB,1);
  }else if(of==256){
    emit(f,"\tinc\t%s+1\n",mregnames[sp]);
  }else if(of==-256){
    emit(f,"\tdec\t%s+1\n",mregnames[sp]);
  }else{
    long abs;
    if(of>0){
      abs=of;
      emit(f,"\tclc\n");
    }else{
      abs=-of;
      emit(f,"\tsec\n");
    }
    if(abs&255){
      emit(f,"\tlda\t%s\n",mregnames[sp]);
      if(of>0){
	emit(f,"\tadc\t#%ld\n",abs&255);
      }else{
	emit(f,"\tsbc\t#%ld\n",abs&255);
      }
      emit(f,"\tsta\t%s\n",mregnames[sp]);
    }
    if((abs&0xff00)==0){
      if(of>0){
	emit(f,"\tbcc\t%s%d\n",labprefix,++label);
	emit(f,"\tinc\t%s+1\n",mregnames[sp]);
	emit(f,"%s%d:\n",labprefix,label);
      }else{
	emit(f,"\tbcs\t%s%d\n",labprefix,++label);
	emit(f,"\tdec\t%s+1\n",mregnames[sp]);
	emit(f,"%s%d:\n",labprefix,label);
      }	
    }else{
      emit(f,"\tlda\t%s+1\n",mregnames[sp]);
      if(of>0)
	emit(f,"\tadc\t#%ld\n",(abs>>8)&255);
      else
	emit(f,"\tsbc\t#%ld\n",(abs>>8)&255);
      emit(f,"\tsta\t%s+1\n",mregnames[sp]);
    }
  }
}

/* generates the function entry code */
static void function_top(FILE *f,struct Var *v,long offset)
{
  int i,r,of;
  rsavesize=0;
  libsave=1;
  hasretval=0;

  if(!optsize||(v->tattr&NOCOMPRESS)) emit(f,";vcprmin=10000\n");
  if(vlas) emit(f,"___fo\tset\t%ld\n",(long)argsize);
  r=0;
  for(i=FIRST_GPR;i<=LAST_GPR;i++){
    if((regused[i]&&(in_isr||!regscratch[i]))||(in_isr&&function_calls&&regscratch[i]&&!regsa[i])){
      if(i!=LAST_GPR-VOL_GPRS+1&&r==0) libsave=0;
      rsavesize++;
      r=1;
    }else{
      if(i==LAST_GPR-VOL_GPRS+1) libsave=0;
      r=0;
    }
  }
  rscnt=rsavesize;
  if(rscnt&&!SOFTSTACK){
    if(optspeed||rscnt<2)
      rsavesize=0;
    else if(!optsize&&rscnt<=5)
      rsavesize=0;
  }

  if(!special_section(f,v)){emit(f,codename);ebank(f,sbank(v));if(f) section=CODE;} 
  if(v->storage_class==EXTERN){
    if((v->flags&(INLINEFUNC|INLINEEXT))!=INLINEFUNC)
      emit(f,"\tglobal\t%s%s\n",idprefix,v->identifier);
    emit(f,"%s%s:\n",idprefix,v->identifier);
  }else
    emit(f,"%s%ld:\n",labprefix,zm2l(v->offset));

  offset=localsize+argsize+rsavesize;

  if(in_isr){
    emit(f,"\tpha\n");
    if(c02){
      emit(f,"\tphx\n");
      emit(f,"\tphy\n");
    }else{
      emit(f,"\ttxa\n");
      emit(f,"\tpha\n");
      emit(f,"\ttya\n");
      emit(f,"\tpha\n");
    }
    if(offset||function_calls){
      emit(f,"\tlda\t%s\n",mregnames[sp]);
      emit(f,"\tpha\n");
      emit(f,"\tlda\t%s+1\n",mregnames[sp]);
      emit(f,"\tpha\n");
      emit(f,"\tlda\t#<(___isrstack-%ld)\n",offset);
      emit(f,"\tsta\t%s\n",mregnames[sp]);
      emit(f,"\tlda\t#>(___isrstack-%ld)\n",offset);
      emit(f,"\tsta\t%s+1\n",mregnames[sp]);
    }
  }

  if(MAINARGS&&v->storage_class==EXTERN&&!strcmp(v->identifier,"main")&&v->vtyp->exact->count>1)
    emit(f,"\tjsr\tinitmainargs\n");

  yval=NOVAL;
  of=argsize+localsize;

  if(rsavesize>0&&of+rsavesize>255){
    offset-=rsavesize;
    incsp(f,-rsavesize);
    of=0;
  }else{
    incsp(f,-offset);
    offset=0;
  }


  if(!libsave||rscnt!=rsavesize||optspeed||rscnt<=1||(rscnt<=3&&(!optsize)))
    libsave=0;
  
  if(libsave){
    sety(f,of+rsavesize-1);
    if(0/*mask_opt*/)
      emit(f,"\tjsr\t%s__rsave.%d+%ld\n",idprefix,(1<<(rscnt-2)),(rscnt-2)*5);
    else
      emit(f,"\tjsr\t%s__rsave%ld\n",idprefix,rscnt);
    yval=of;
  }else{
    int last=0;
    for(i=FIRST_GPR;i<=LAST_GPR;i++){
      if((regused[i]&&(in_isr||!regscratch[i]))||(in_isr&&function_calls&&regscratch[i]&&!regsa[i])){
	if(rscnt!=rsavesize){
	  if(ce02&&last==i-1){
	    emit(f,"\tphw\t%s\n",mregnames[last]);
	    last=0;
	  }else{
	    if(!ce02){
	      emit(f,"\tlda\t%s\n",mregnames[i]);
	      emit(f,"\tpha\n");
	    }else
	      last=i;
	  }
	}else{
	  sety(f,of++);
	  emit(f,"\tlda\t%s\n",mregnames[i]);
	  emit(f,"\tsta\t(%s),y\n",mregnames[sp]);
	}
      }
    }
    if(last){
      emit(f,"\tlda\t%s\n",mregnames[last]);
      emit(f,"\tpha\n");
    }
  }



  incsp(f,-offset);

  if(vlas){
    emit(f,"\tlda\t%s\n",mregnames[sp]);
    emit(f,"\tsta\t%s\n",mregnames[fp]);
    emit(f,"\tlda\t%s\n",mregnames[sp2]);
    emit(f,"\tsta\t%s\n",mregnames[fp2]);
  }
}

/* generates the function exit code */
static void function_bottom(FILE *f,struct Var *v,long offset)
{
  int i,of,ar;
  struct cmplist *p;
  offset=localsize+argsize+rsavesize;
  of=argsize+localsize;

  i=freturn(v->vtyp->next);
  if(hasretval&&(i==ra||i==rax)) ar=1; else ar=0;

  if(rscnt!=rsavesize){
    if(ar&&!pushedacc){
      pushedacc=t4;
      emit(f,"\tsta\t%s\n",mregnames[pushedacc]);
    }
    for(i=LAST_GPR;i>=FIRST_GPR;i--){
      if((regused[i]&&(in_isr||!regscratch[i]))||(in_isr&&function_calls&&regscratch[i]&&!regsa[i])){
	emit(f,"\tpla\n");
	emit(f,"\tsta\t%s\n",mregnames[i]);
      }
    }
  }
  if(rsavesize>0&&of+rsavesize>255){
    if(of!=1&&ar&&!pushedacc){
      pushedacc=t4;
      emit(f,"\tsta\t%s\n",mregnames[pushedacc]);
    }
    incsp(f,of);
    offset-=of;
    of=0;
  }
  if(rsavesize>0){
    if(ar&&!pushedacc){
      pushedacc=t4;
      emit(f,"\tsta\t%s\n",mregnames[pushedacc]);
    }
  }
  if(rsavesize){
    if(libsave){
      sety(f,of+rsavesize-1);
      if(0/*mask_opt*/)
	emit(f,"\tjsr\t%s__rload.%d+%ld\n",idprefix,(1<<(rscnt-2)),(rscnt-2)*5);
      else
	emit(f,"\tjsr\t%s__rload%ld\n",idprefix,rscnt);
      yval=of;
    }else{
      for(i=FIRST_GPR;i<=LAST_GPR;i++){
	if((regused[i]&&(in_isr||!regscratch[i]))||(in_isr&&function_calls&&regscratch[i]&&!regsa[i])){
	  sety(f,of++);
	  emit(f,"\tlda\t(%s),y\n",mregnames[sp]);
	  emit(f,"\tsta\t%s\n",mregnames[i]);
	}
      }
    }
  }
  if(in_isr){
    if(offset||function_calls){
      emit(f,"\tpla\n");
      emit(f,"\tsta\t%s+1\n",mregnames[sp]);
      emit(f,"\tpla\n");
      emit(f,"\tsta\t%s\n",mregnames[sp]);
    }
  }else if(offset==2&&!pushedacc){
    emit(f,"\tinc\t%s\n",mregnames[sp]);
    emit(f,"\tbeq\t%s%d\n",labprefix,++label);
    emit(f,"\tinc\t%s\n",mregnames[sp]);
    emit(f,"\tbeq\t%s%d\n",labprefix,++label);
    reload_acc(f);
    emit(f,ret);
    emit(f,"%s%d:\n",labprefix,label-1);
    emit(f,"\tinc\t%s\n",mregnames[sp]);
    emit(f,"%s%d:\n",labprefix,label);
    emit(f,"\tinc\t%s+1\n",mregnames[sp]);
  }else{
    if(offset!=0&&ar&&!pushedacc){
      pushedacc=t4;
      emit(f,"\tsta\t%s\n",mregnames[pushedacc]);
    }
    incsp(f,offset);
  }

  reload_acc(f);

  if(in_isr){
    if(c02){
      emit(f,"\tply\n");
      emit(f,"\tplx\n");
    }else{
      emit(f,"\tpla\n");
      emit(f,"\ttay\n");
      emit(f,"\tpla\n");
      emit(f,"\ttax\n");
    }
    emit(f,"\tpla\n");
  }
  emit(f,ret);

  for(p=first_cmplist;p;){
    struct cmplist *m;
    emit(f,"%s%d:\n",labprefix,p->from);
    if(p->mode==JMPIND){
      /* indirect call */
      emit(f,"\tjmp\t(%s)\n",mregnames[p->to]);
    }else{
      pushedacc=p->mode;
      reload_acc(f);
      emit(f,"\t%s\t%s%d\n",jmpinst,labprefix,p->to);
    }
    m=p;
    p=p->next;
    free(m);
  }
  first_cmplist=0;
  pushedacc=0;
}

/****************************************/
/*  End of private data and functions.  */
/****************************************/

/*  Does necessary initializations for the code-generator. Gets called  */
/*  once at the beginning and should return 0 in case of problems.      */
int init_cg(void)
{
  int i;
  /*  Initialize some values which cannot be statically initialized   */
  /*  because they are stored in the target's arithmetic.             */
  maxalign=l2zm(1L);
  char_bit=l2zm(8L);
  stackalign=l2zm(1);

  if(IEEE){
    ieee=1;
    msizetab[DOUBLE]=msizetab[LDOUBLE]=l2zm(8L);
  }


  mregnames[0]=regnames[0]="noreg";
  mregnames[REGDUMMY1]=mymalloc(MAXI+8);
  mregnames[REGDUMMY2]=mymalloc(MAXI+8);
  mregnames[REGDUMMY3]=mymalloc(MAXI+8);

  for(i=FIRST_GPR;i<=LAST_GPR;i++){
    regnames[i]=mymalloc(10);
    sprintf(regnames[i],"r%d",i-FIRST_GPR);
    mregnames[i]=regnames[i];
    regsize[i]=l2zm(1L);
    regtype[i]=&ctyp;
  }
  for(i=FIRST_PAIR;i<=LAST_PAIR;i++){
    int sr=(i-FIRST_PAIR)*2+FIRST_GPR;
    regnames[i]=mymalloc(10);
    sprintf(regnames[i],"%s/%s",mregnames[sr],mregnames[sr+1]);
    mregnames[i]=regnames[sr];
    regsize[i]=l2zm(2L);
    regtype[i]=&ityp;
  }
  for(i=FIRST_BIG;i<=LAST_BIG;i++){
    regnames[i]=mymalloc(10);
    sprintf(regnames[i],"btmp%d",i-FIRST_BIG);
    mregnames[i]=regnames[i];
    regsize[i]=msizetab[FLOAT];
    regtype[i]=&ftyp;
    regsa[i]=0;
    regscratch[i]=1;
  }
  for(i=FIRST_BIGP;i<=LAST_BIGP;i++){
    int sr=(i-FIRST_BIGP)*2+FIRST_BIG;
    regnames[i]=mymalloc(20);
    sprintf(regnames[i],"%s/%s",mregnames[sr],mregnames[sr+1]);
    mregnames[i]=regnames[sr];
    regsize[i]=msizetab[LLONG];
    regtype[i]=&lltyp;
    regsa[i]=0;
    regscratch[i]=1;
  }

  mregnames[ra] = regnames[ra] = "a";
  mregnames[rx] = regnames[rx] = "x";
  mregnames[ry] = regnames[ry] = "y";
  regsize[ra]=regsize[rx]=regsize[ry]=l2zm(1L);
  regtype[ra]=regtype[rx]=regtype[ry]=&ctyp;
  mregnames[sp]=regnames[sp] = "sp";
  mregnames[sp1]=regnames[sp1] = "sp";
  mregnames[sp2]=regnames[sp2] = "sp+1";

  mregnames[rax]=regnames[rax] = "a/x";
  regsize[rax]=regsize[sp]=l2zm(2L);
  regtype[rax]=regtype[sp]=&ityp;

  reg_prio[ra]=reg_prio[rax]=100;
  reg_prio[rx]=50;

  /*  Use multiple ccs.   */
  multiple_ccs=0;

  short_push=1;

  static_cse=0;

  dref_cse=1;

  /*prefer_statics=1; TODO */


  if(optsize){
    clist_copy_stack=2;
    clist_copy_pointer=2;
    clist_copy_static=2;
  }else if(optspeed){
    clist_copy_stack=64;
    clist_copy_pointer=64;
    clist_copy_static=64;
  }else{
    clist_copy_stack=8;
    clist_copy_pointer=8;
    clist_copy_static=8;
  }

  /*  Initialize the min/max-settings. Note that the types of the     */
  /*  host system may be different from the target system and you may */
  /*  only use the smallest maximum values ANSI guarantees if you     */
  /*  want to be portable.                                            */
  /*  That's the reason for the subtraction in t_min[INT]. Long could */
  /*  be unable to represent -2147483648 on the host system.          */
  t_min[CHAR]=l2zm(-128L);
  t_min[SHORT]=l2zm(-32768L);
  t_min[LONG]=zmsub(l2zm(-2147483647L),l2zm(1L));
  t_min[INT]=t_min(SHORT);
  t_min[LLONG]=zmlshift(l2zm(1L),l2zm(63L));
  t_min[MAXINT]=t_min(LLONG);
  t_max[CHAR]=ul2zum(127L);
  t_max[SHORT]=ul2zum(32767UL);
  t_max[LONG]=ul2zum(2147483647UL);
  t_max[INT]=t_max(SHORT);
  t_max[LLONG]=zumrshift(zumkompl(ul2zum(0UL)),ul2zum(1UL));
  t_max[MAXINT]=t_max(LLONG);
  tu_max[CHAR]=ul2zum(255UL);
  tu_max[SHORT]=ul2zum(65535UL);
  tu_max[LONG]=ul2zum(4294967295UL);
  tu_max[INT]=t_max(UNSIGNED|SHORT);
  tu_max[LLONG]=zumkompl(ul2zum(0UL));
  tu_max[MAXINT]=t_max(UNSIGNED|LLONG);
  
  /*  Reserve a few registers for use by the code-generator.      */
  /*  This is not optimal but simple.                             */
  regsa[ry]=regsa[sp]=regsa[sp1]=regsa[sp2]=REGSA_NEVER;
  regsa[t1]=regsa[t2]=regsa[t3]=regsa[t4]=REGSA_NEVER;
  regscratch[ra]=regscratch[rx]=regscratch[rax]=1;
  if(!GLOBACC)
    regsa[ra]=regsa[rx]=regsa[rax]=REGSA_TEMPS;
  regsa[rx]=0;
  regscratch[sp]=regscratch[sp1]=regscratch[sp2]=regscratch[ry]=0;
  regscratch[t1]=regscratch[t2]=regscratch[t3]=regscratch[t4]=1;

  for(i=FIRST_GPR;i<=LAST_GPR-VOL_GPRS;i++){
    regscratch[i]=1;
    if(i&1)
      regscratch[FIRST_PAIR+(i-FIRST_GPR)/2]=1;
  }

  target_macros=marray;

  declare_builtin("__mulint8",CHAR,CHAR,FIRST_GPR,CHAR,FIRST_GPR+1,1,0);
  declare_builtin("__mulint16",INT,INT,FIRST_PAIR,INT,FIRST_PAIR+1,1,0);
  declare_builtin("__muluint16",UNSIGNED|INT,UNSIGNED|INT,FIRST_PAIR,UNSIGNED|INT,FIRST_PAIR+1,1,0);
  declare_builtin("__divuint16",UNSIGNED|INT,UNSIGNED|INT,FIRST_PAIR,UNSIGNED|INT,FIRST_PAIR+1,1,0);
  declare_builtin("__divint16",INT,INT,FIRST_PAIR,INT,FIRST_PAIR+1,1,0);
  declare_builtin("__modint16",INT,INT,FIRST_PAIR,INT,FIRST_PAIR+1,1,0);
  declare_builtin("__moduint16",UNSIGNED|INT,UNSIGNED|INT,FIRST_PAIR,UNSIGNED|INT,FIRST_PAIR+1,1,0);
  declare_builtin("__modint16wo",INT,INT,FIRST_PAIR,INT,FIRST_PAIR+1,1,0);
  declare_builtin("__divuint16wo",UNSIGNED|INT,UNSIGNED|INT,FIRST_PAIR,UNSIGNED|INT,FIRST_PAIR+1,1,0);
  declare_builtin("__divint16wo",INT,INT,FIRST_PAIR,INT,FIRST_PAIR+1,1,0);
  declare_builtin("__moduint16wo",UNSIGNED|INT,UNSIGNED|INT,FIRST_PAIR,UNSIGNED|INT,FIRST_PAIR+1,1,0);
  declare_builtin("__modint16wo",INT,INT,FIRST_PAIR,INT,FIRST_PAIR+1,1,0);

  declare_builtin("__mulint32",LONG,LONG,FIRST_BIG+1,LONG,FIRST_BIG+2,1,0);
  declare_builtin("__muluint32",UNSIGNED|LONG,UNSIGNED|LONG,FIRST_BIG+1,UNSIGNED|LONG,FIRST_BIG+2,1,0);
  declare_builtin("__divint32",LONG,LONG,FIRST_BIG,LONG,FIRST_BIG+1,1,0);
  declare_builtin("__divuint32",UNSIGNED|LONG,UNSIGNED|LONG,FIRST_BIG,UNSIGNED|LONG,FIRST_BIG+1,1,0);
  declare_builtin("__modint32",LONG,LONG,FIRST_BIG,LONG,FIRST_BIG+1,1,0);
  declare_builtin("__moduint32",UNSIGNED|LONG,UNSIGNED|LONG,FIRST_BIG,UNSIGNED|LONG,FIRST_BIG+1,1,0);
  declare_builtin("__divint32wo",LONG,LONG,FIRST_BIG,LONG,FIRST_BIG+1,1,0);
  declare_builtin("__divuint32wo",UNSIGNED|LONG,UNSIGNED|LONG,FIRST_BIG,UNSIGNED|LONG,FIRST_BIG+1,1,0);
  declare_builtin("__modint32wo",LONG,LONG,FIRST_BIG,LONG,FIRST_BIG+1,1,0);
  declare_builtin("__moduint32wo",UNSIGNED|LONG,UNSIGNED|LONG,FIRST_BIG,UNSIGNED|LONG,FIRST_BIG+1,1,0);



  declare_builtin("__mulint64",LLONG,LLONG,0,LLONG,0,1,0);
  declare_builtin("__addint64",LLONG,LLONG,0,LLONG,0,1,0);
  declare_builtin("__subint64",LLONG,LLONG,0,LLONG,0,1,0);
  declare_builtin("__andint64",LLONG,LLONG,0,LLONG,0,1,0);
  declare_builtin("__orint64",LLONG,LLONG,0,LLONG,0,1,0);
  declare_builtin("__eorint64",LLONG,LLONG,0,LLONG,0,1,0);
  declare_builtin("__negint64",LLONG,LLONG,0,0,0,1,0);
  declare_builtin("__lslint64",LLONG,LLONG,0,INT,0,1,0);

  declare_builtin("__divint64",LLONG,LLONG,0,LLONG,0,1,0);
  declare_builtin("__divuint64",UNSIGNED|LLONG,UNSIGNED|LLONG,0,UNSIGNED|LLONG,0,1,0);
  declare_builtin("__modint64",LLONG,LLONG,0,LLONG,0,1,0);
  declare_builtin("__moduint64",UNSIGNED|LLONG,UNSIGNED|LLONG,0,UNSIGNED|LLONG,0,1,0);
  declare_builtin("__lsrint64",LLONG,LLONG,0,INT,0,1,0);
  declare_builtin("__lsruint64",UNSIGNED|LLONG,UNSIGNED|LLONG,0,INT,0,1,0);
  declare_builtin("__cmpsint64",INT,LLONG,0,LLONG,0,1,0);
  declare_builtin("__cmpuint64",INT,UNSIGNED|LLONG,0,UNSIGNED|LLONG,0,1,0);

  declare_builtin("__sint32toflt32",FLOAT,LONG,OLDFP?0:FIRST_BIG,0,0,1,0);
  declare_builtin("__uint32toflt32",FLOAT,UNSIGNED|LONG,OLDFP?0:FIRST_BIG,0,0,1,0);
  declare_builtin("__flt32tosint32",LONG,FLOAT,OLDFP?0:FIRST_BIG,0,0,1,0);
  declare_builtin("__flt32touint32",UNSIGNED|LONG,FLOAT,OLDFP?0:FIRST_BIG,0,0,1,0);
  declare_builtin("__sint16toflt32",FLOAT,INT,FIRST_PAIR,0,0,1,0);
  declare_builtin("__uint16toflt32",FLOAT,UNSIGNED|INT,FIRST_PAIR,0,0,1,0);
  declare_builtin("__flt32tosint16",INT,FLOAT,OLDFP?0:FIRST_BIG,0,0,1,0);
  declare_builtin("__flt32touint16",UNSIGNED|INT,FLOAT,OLDFP?0:FIRST_BIG,0,0,1,0);

  declare_builtin("__sint32toflt64",DOUBLE,LONG,OLDFP?0:FIRST_BIG,0,0,1,0);
  declare_builtin("__uint32toflt64",DOUBLE,UNSIGNED|LONG,OLDFP?0:FIRST_BIG,0,0,1,0);
  declare_builtin("__flt64tosint32",LONG,DOUBLE,OLDFP?0:FIRST_BIGP,0,0,1,0);
  declare_builtin("__flt64touint32",UNSIGNED|LONG,DOUBLE,OLDFP?0:FIRST_BIGP,0,0,1,0);
  declare_builtin("__sint16toflt64",DOUBLE,INT,FIRST_PAIR,0,0,1,0);
  declare_builtin("__uint16toflt64",DOUBLE,UNSIGNED|INT,FIRST_PAIR,0,0,1,0);
  declare_builtin("__flt64tosint16",INT,DOUBLE,OLDFP?0:FIRST_BIGP,0,0,1,0);
  declare_builtin("__flt64touint16",UNSIGNED|INT,DOUBLE,OLDFP?0:FIRST_BIGP,0,0,1,0);

  declare_builtin("__flt64toflt32",FLOAT,DOUBLE,OLDFP?0:FIRST_BIGP,0,0,1,0);
  declare_builtin("__flt32toflt64",DOUBLE,FLOAT,OLDFP?0:FIRST_BIG,0,0,1,0);

  declare_builtin("__addflt32",FLOAT,FLOAT,OLDFP?0:FIRST_BIG+1,FLOAT,OLDFP?0:FIRST_BIG,1,0);
  declare_builtin("__subflt32",FLOAT,FLOAT,OLDFP?0:FIRST_BIG+1,FLOAT,OLDFP?0:FIRST_BIG,1,0);
  declare_builtin("__mulflt32",FLOAT,FLOAT,OLDFP?0:FIRST_BIG+1,FLOAT,OLDFP?0:FIRST_BIG,1,0);
  declare_builtin("__divflt32",FLOAT,FLOAT,OLDFP?0:FIRST_BIG+1,FLOAT,OLDFP?0:FIRST_BIG,1,0);
  declare_builtin("__negflt32",FLOAT,FLOAT,OLDFP?0:FIRST_BIG,0,0,1,0);
  declare_builtin("__cmpsflt32",CHAR,FLOAT,OLDFP?0:FIRST_BIG+1,FLOAT,OLDFP?0:FIRST_BIG,1,0);

#if 0
  for(i=1;i<MAXR;i++){
    printf("%02d %s scratch=%d ",i,regnames[i],regscratch[i]);
    if(reg_pair(i,&rp))
      printf("pair(%s,%s)",regnames[rp.r1],regnames[rp.r2]);
    printf("\n");
  }
#endif

  if(NOPEEP) nopeep=1;
  if(CBMASCII) cbmascii=1;
  if(ATASCII) atascii=1;
  if(DIVBUG) divbug=1;
  if(M65IO) m65io=1;
  if(NOBANKING) manbank=1;
  jmpinst="jmp";
  if(C02||C02ALT){
    c02=1;zzero=1;
    jmpinst="bra";
  }
  if(CE02){
    c02=1;ce02=1;
    jmpinst="bra";
  }
  if(MEGA65){
    m65=1;c02=1;ce02=1;
    jmpinst="bra";
  }

  for(i=0;i<=MAX_TYPE;i++){
    sizetab[i]=l2zm(msizetab[i]);
    align[i]=l2zm(malign[i]);
  }

  bankv.storage_class=EXTERN;
  bankv.identifier="__bankv";
  bankv.vtyp=new_typ();
  bankv.vtyp->flags=CHAR;

  bankcnum=COMMONBANK;

  return 1;
}

void init_db(FILE *f)
{
}

int freturn(struct Typ *t)
/*  Returns the register in which variables of type t are returned. */
/*  If the value cannot be returned in a register returns 0.        */
/*  A pointer MUST be returned in a register. The code-generator    */
/*  has to simulate a pseudo register if necessary.                 */
{
  int typ=t->flags&NQ;
  if(ISSTRUCT(typ)||ISUNION(typ)||typ==VOID) 
    return 0;
  if(OLDFP&&ISFLOAT(typ)) return FIRST_GPR;
  if(typ==LONG||typ==FLOAT||ISFPOINTER(typ)||(!ieee&&(typ==DOUBLE||typ==LDOUBLE)))
    return FIRST_BIG;
  if(typ==LLONG||(ieee&&(typ==DOUBLE||typ==LDOUBLE)))
    return FIRST_BIGP;
  if(zmleq(szof(t),l2zm(1L)))
    return ra;
  if(zmleq(szof(t),l2zm(2L))) 
    return rax;
  else
    return 0;
}

int reg_pair(int r,struct rpair *p)
/* Returns 0 if the register is no register pair. If r  */
/* is a register pair non-zero will be returned and the */
/* structure pointed to p will be filled with the two   */
/* elements.                                            */
{
  if(r>=FIRST_PAIR&&r<=LAST_PAIR){
    p->r1=(r-FIRST_PAIR)*2+FIRST_GPR;
    p->r2=p->r1+1;
    return 1;
  }else if(r>=FIRST_BIGP&&r<=LAST_BIGP){
    p->r1=(r-FIRST_BIGP)*2+FIRST_BIG;
    p->r2=p->r1+1;
    return 1;
  }else if(r==rax){
    p->r1=ra;
    p->r2=rx;
    return 1;
  }else if(r==sp){
    p->r1=sp1;
    p->r2=sp2;
    return 1;
  }
  return 0;
}

/* estimate the cost-saving if object o from IC p is placed in
   register r */
int cost_savings(struct IC *p,int r,struct obj *o)
{
  int c=p->code,co;
  if((o->flags&VAR)&&(o->v->tattr&ZPAGE)) return 0;
  if(indirect(o)) co=5; else co=2;

  /*TODO: adapt this */
  if(o->flags&VKONST){
    if(o!=&p->q1||p->q2.flags!=0) return 0;
    if(r==ra||r==rax) return co;
    if(r==rx&&(c==ASSIGN||c==PUSH)) return co-1;
    return 0;
  }

  if(ISIDX(r)){
    if(c==ADD||c==SUB||c==ADDI2P||c==SUBIFP||c==AND||c==OR||c==XOR){
      if(o==&p->q2&&c!=ADDI2P) return co-4;
      if(r==rx&&o==&p->q2&&((p->q1.flags&(VARADR|KONST|VKONST))==0||(p->q1.flags&DREFOBJ)))
	return co-4;
      if((c==ADD||c==SUB)&&o==&p->z&&(p->q2.flags&(KONST|DREFOBJ))==KONST){
	eval_const(&p->q2.val,q2typ(p));
	if(zmeqto(vmax,Z1)&&zumeqto(vumax,ZU1))
	  return co+2;
      }
    }else if(c==ASSIGN||c==CONVERT){
      if(o==&p->q1&&indirect(&p->z)) return 1;
      if(o==&p->z&&indirect(&p->q1)) return 1;
    }else if(c==COMPARE){
      //if(o==&p->q1&&indirect(&p->q2)) return INT_MIN;
      //if(o==&p->q2&&indirect(&p->q1)) return INT_MIN;
    }else if(c==SETRETURN||c==GETRETURN||c==PUSH){
    }else if(c==TEST){
    }else
      return INT_MIN;
  }

  if(c==ADDI2P&&o==&p->q1&&(p->typf&NU)==CHAR&&(r==rax))
    return INT_MIN;


  if(o->flags&DREFOBJ){
    if(isptr(r))
      return co+co+10;
    if(r==rax)
      return INT_MIN;
  }
  if(c==SETRETURN&&r==p->z.reg&&!(o->flags&DREFOBJ)) return co+2;
  if(c==GETRETURN&&r==p->q1.reg&&!(o->flags&DREFOBJ)) return co+2;
  if((c==ADD||c==SUB)&&o==&p->z&&p->q1.flags==p->z.flags&&p->q1.v==p->z.v&&(p->q2.flags&(KONST|DREFOBJ))==KONST){
    eval_const(&p->q2.val,q2typ(p));
    if(zmeqto(vmax,Z1)&&zumeqto(vumax,ZU1))
      return co+1;
  }
  if(r==ra)
    return co+2;
  if(ISIDX(r))
    return co+1;
  if(r==rax)
    return co+co+4;
  return co;
}

int regok(int r,int t,int mode)
/*  Returns 0 if register r cannot store variables of   */
/*  type t. If t==POINTER and mode!=0 then it returns   */
/*  non-zero only if the register can store a pointer   */
/*  and dereference a pointer to mode.                  */
{
  if(r==0)
    return 0;
  if(r==rax&&NORAX)
    return 0;
  if(r==rx&&NOX)
    return 0;
  t&=NQ;
  if(ISCHAR(t))
    if(r==ra||(ISIDX(r)&&(optflags&2))||(r>=FIRST_GPR&&r<=LAST_GPR))
      return 1;
  if(ISSHORT(t)){
    if(r==rax){
      if(t==POINTER&&mode<0)
	return 1;
      if(t!=POINTER)
	return 1;
    }
    if(r>=FIRST_PAIR&&r<=LAST_PAIR)
      return 1;
  }
  if(r>=FIRST_BIG&&r<=LAST_BIG){
    if(t==LONG||t==FLOAT||((t==DOUBLE||t==LDOUBLE)&&!ieee))
      return 1;
    if(t==FPOINTER)
      return 1;
  }
  if(r>=FIRST_BIGP&&r<=LAST_BIGP){
    if(t==LLONG||((t==DOUBLE||t==LDOUBLE)&&ieee))
      return 1;
  }
  return 0;
}

int dangerous_IC(struct IC *p)
/*  Returns zero if the IC p can be safely executed     */
/*  without danger of exceptions or similar things.     */
/*  vbcc may generate code in which non-dangerous ICs   */
/*  are sometimes executed although control-flow may    */
/*  never reach them (mainly when moving computations   */
/*  out of loops).                                      */
/*  Typical ICs that generate exceptions on some        */
/*  machines are:                                       */
/*      - accesses via pointers                         */
/*      - division/modulo                               */
/*      - overflow on signed integer/floats             */
{
  int c=p->code;
  if((p->q1.flags&DREFOBJ)||(p->q2.flags&DREFOBJ)||(p->z.flags&DREFOBJ))
    return 1;
  if((c==DIV||c==MOD)&&!isconst(q2))
    return 1;
  return 0;
}

int must_convert(int o,int t,int const_expr)
/*  Returns zero if code for converting np to type t    */
/*  can be omitted.                                     */
/*  On the PowerPC cpu pointers and 32bit               */
/*  integers have the same representation and can use   */
/*  the same registers.                                 */
{
  int op=o&NQ,tp=t&NQ;

  if(op==tp) return 0;
  if(ISCHAR(op)&&ISCHAR(tp)) return 0;
  if(ISSHORT(op)&&ISSHORT(tp)) return 0;
  if(!ieee&&ISFLOAT(op)&&ISFLOAT(tp)) return 0;
  if(op==DOUBLE&&tp==LDOUBLE) return 0;
  if(op==LDOUBLE&&tp==DOUBLE) return 0;

  return 1;
}

void gen_ds(FILE *f,zmax size,struct Typ *t)
/*  This function has to create <size> bytes of storage */
/*  initialized with zero.                              */
{
  if(STDSYNTAX)
    emit(f,"\tspace\t%ld\n",zm2l(size));
  else
    emit(f,"\treserve\t%ld\n",zm2l(size));
  newobj=0;
}

void gen_align(FILE *f,zmax align)
/*  This function has to make sure the next data is     */
/*  aligned to multiples of <align> bytes.              */
{
  if(zm2l(align)>1) emit(f,"\talign 1\n");
}

void gen_var_head(FILE *f,struct Var *v)
/*  This function has to create the head of a variable  */
/*  definition, i.e. the label and information for      */
/*  linkage etc.                                        */
{
  int constflag,b=sbank(v);char *sec;
  if(v->clist) constflag=is_const(v->vtyp);
  if(v->storage_class==STATIC){
    if(ISFUNC(v->vtyp->flags)) return;
    if(v->tattr&ZPAGE)
      emit(f,"\tzpage\t%s%ld\n",labprefix,zm2l(v->offset));
    if(!special_section(f,v)){
      if(v->clist&&(!constflag||(g_flags[2]&USEDFLAG))){emit(f,dataname);ebank(f,b);if(f) section=DATA;}
      if(v->clist&&constflag&&!(g_flags[2]&USEDFLAG)){emit(f,rodataname);ebank(f,b);if(f) section=RODATA;}
      if(!v->clist){emit(f,bssname);ebank(f,b);if(f) section=BSS;}
    }
    gen_align(f,falign(v->vtyp));
    emit(f,"%s%ld:\n",labprefix,zm2l(v->offset));
    newobj=1;
  }
  if(v->storage_class==EXTERN){
    emit(f,"\t%s\t%s%s\n",(v->flags&NEEDS)?"needs":"global",idprefix,v->identifier);
    if(v->tattr&ZPAGE)
      emit(f,"\tzpage\t%s%s\n",idprefix,v->identifier);
    if(v->flags&(DEFINED|TENTATIVE)){
      if(!special_section(f,v)){
	if(v->clist&&(!constflag||(g_flags[2]&USEDFLAG))){emit(f,dataname);ebank(f,b);if(f) section=DATA;}
	if(v->clist&&constflag&&!(g_flags[2]&USEDFLAG)){emit(f,rodataname);ebank(f,b);if(f) section=RODATA;}
	if(!v->clist){emit(f,bssname);ebank(f,b);if(f) section=BSS;}
      }

      gen_align(f,falign(v->vtyp));
      emit(f,"%s%s:\n",idprefix,v->identifier);
      newobj=1;
    }
  }
}

void gen_dc(FILE *f,int t,struct const_list *p)
/*  This function has to create static storage          */
/*  initialized with const-list p.                      */
{
  if(ISCHAR(t))
    emit(f,"\tbyte\t");
  else
    emit(f,"\tword\t");
  if(!p->tree){
    if(ISLONG(t)||ISFLOAT(t)){
      if(ieee&&ISFLOAT(t)){
	emit_ieee(f,&p->val,t&NQ);
      }else{
	eval_const(&p->val,t&NU);
	if(ISFLOAT(t)) cnv_fp();
	gval.vmax=zmand(vmax,l2zm(0xffffL));
	emitval(f,&gval,MAXINT);
	emit(f,",");
	gval.vmax=zmand(zmrshift(vmax,l2zm(16L)),l2zm(0xffffL));
	emitval(f,&gval,MAXINT);
      }
    }else{
      if(ISFPOINTER(t)){
	eval_const(&p->val,t&NU);
	emit(f,"%ld\n",(long)zm2l(vmax)&0xffff);
	emit(f,"\tbyte\t%d\n",(int)((zm2l(vmax)>>16)&0xff));
      }else
	emitval(f,&p->val,t&NU);
    }
  }else{
    emit_obj(f,&p->tree->o,t&NU);
    if(ISFPOINTER(t)){
      int b;
      if((p->tree->o.flags&(VAR|VARADR))!=(VAR|VARADR)) ierror(0);
      b=bank(p->tree->o.v);
      emit(f,"\n\tbyte\t%d",b>=0?b:bankcnum);
    }
  }
  emit(f,"\n");newobj=0;
}

static int handle_m65(FILE *f,IC *p)
{
  int t=p->typf,c=p->code,noop2=0;
  if(c==MULT&&(ISSHORT(t)||ISCHAR(t))){
    get_acc(f,p,INT);
    load_acc(f,&p->q1,t);
    if(m65io){
      emit(f,"\tsta\t$d770\n");
      if(ISSHORT(t)) emit(f,"\tstx\t$d771\n");
    }else{
      emit(f,"\tldz\t#$70\n");
      emit(f,"\tstz\t___m65mathptr\n");
      emit(f,"\tstq\t[___m65mathptr]\n");
    }
    load_acc(f,&p->q2,t);
    if(m65io){
      emit(f,"\tsta\t$d774\n");
      if(ISSHORT(t)) emit(f,"\tstx\t$d775\n");
    }
    if(m65io){
      emit(f,"\tlda\t$d778\n");
      if(ISSHORT(t)) emit(f,"\tldx\t$d779\n");
    }else{
      emit(f,"\tldz\t#$74\n");
      emit(f,"\tstz\t___m65mathptr\n");
      emit(f,"\tstq\t[___m65mathptr]\n");    
      emit(f,"\tldz\t#4\n");
      emit(f,"\tldq\t[___m65mathptr],z\n");
      emit(f,"\tldz\t#0\n");
    }
    yval=NOVAL;
    store_acc(f,&p->z,t);
    return 1;
  }
  if(ISLONG(t)&&LONGM65(c)){
    int mnoy;

    if(c==ASSIGN&&isreg(q1)&&isreg(z)&&p->q1.reg==p->z.reg) return 1;
    if(c==GETRETURN&&isreg(z)&&p->z.reg==FIRST_BIG) return 1;
    if(c==SETRETURN&&isreg(q1)&&p->q1.reg==FIRST_BIG) return 1;

    get_acc(f,p,INT);

    if(c==LSHIFT||c==RSHIFT){
      int r,cnt=-1,mzzero;
      
      if((p->q2.flags&(KONST|DREFOBJ))==KONST){
	eval_const(&p->q2.val,p->typf2);
	cnt=(int)(zm2l(vmax));
	cnt&=31;
      }

      if(cnt==24||cnt==16||cnt==8||(cnt>=0&&(!optsize||cnt<=2))){
	r=0;
      }else{
	if(isreg(q2)&&p->q2.reg>=FIRST_GPR&&scratch(p,r,0)){
	  r=p->q2.reg;
	  if(reg_pair(r,&rp)) r=rp.r1;
	}else{
	  /* TODO: improve for x or z */
	  load_lobyte(f,&p->q2,p->typf2);
	  r=t1;
	  emit(f,"\tsta\t%s\n",mregnames[r]);
	}
      }

      mzzero=zzero;
      zzero=0;
      if(cnt==24||(!optsize&&cnt>=24)){
	cnt-=24;
	if(c==LSHIFT){
	  if(indirect(&p->q1)){
	    load_lobyte(f,&p->q1,t);
	    emit(f,"\ttaz\n");
	  }else
	    do_lobyte(f,"ldz",&p->q1,t);
	  emit(f,"\tlda\t#0\n");
	  emit(f,"\ttax\n");
	  emit(f,"\ttay\n");
	  yval=0;
	}else if(t&UNSIGNED){
	  do_byte4(f,"lda",&p->q1,t);
	  emit(f,"\tldx\t#0\n");
	  emit(f,"\tldz\t#0\n");
	  emit(f,"\tldy\t#0\n");
	  yval=0;
	}else{
	  emit(f,"\tldx\t#0\n");
	  emit(f,"\tldz\t#0\n");
	  emit(f,"\tldy\t#0\n");
	  yval=0;
	  do_byte4(f,"lda",&p->q1,t);
	  emit(f,"\tbpl\t%s%d\n",labprefix,++label);
	  emit(f,"\tdex\n");
	  if(yval==0) 
	    emit(f,"\tdey\n");
	  emit(f,"\tdez\n");
	  emit(f,"%s%d:\n",labprefix,label);
	  if(yval!=0){
	    emit(f,"\tphx\n");
	    emit(f,"\tply\n");
	  }
	}
      }else if(cnt==16||(!optsize&&cnt>=16)){
	cnt-=16;
	if(c==LSHIFT){
	  if(indirect(&p->q1)){
	    load_hibyte(f,&p->q1,t);
	    emit(f,"\ttaz\n");
	    load_lobyte(f,&p->q1,t);
	    emit(f,"\ttay\n");
	  }else{
	    do_lobyte(f,"ldy",&p->q1,t);
	    do_hibyte(f,"ldz",&p->q1,t);
	  }
	  emit(f,"\tlda\t#0\n");
	  emit(f,"\ttax\n");
	}else if(t&UNSIGNED){
	  if(indirect(&p->q1)){
	    do_byte4(f,"lda",&p->q1,t);
	    emit(f,"\ttax\n");
	    do_byte3(f,"lda",&p->q1,t);
	  }else{
	    do_byte3(f,"lda",&p->q1,t);
	    do_byte4(f,"ldx",&p->q1,t);
	  }
	  emit(f,"\tldy\t#0\n");
	  emit(f,"\tldz\t#0\n");
	}else{
	  emit(f,"\tldy\t#0\n");
	  emit(f,"\tldz\t#0\n");
	  yval=0;
	  if(indirect(&p->q1)){
	    do_byte4(f,"lda",&p->q1,t);
	    emit(f,"\ttax\n");
	    do_byte3(f,"lda",&p->q1,t);
	    emit(f,"\tcpx\t#0\n");
	  }else{
	    do_byte3(f,"lda",&p->q1,t);
	    do_byte4(f,"ldx",&p->q1,t);
	  }
	  emit(f,"\tbpl\t%s%d\n",labprefix,++label);
	  emit(f,"\tdez\n");
	  if(yval==0)
	    emit(f,"\tdey\n");
	  emit(f,"%s%d:\n",labprefix,label);
	  if(yval!=0){
	    emit(f,"\tphz\n");
	    emit(f,"\tply\n");
	  }
	}
      }else if(cnt==8||(!optsize&&cnt>=8)){
	cnt-=8;
	if(c==LSHIFT){
	  if(indirect(&p->q1)){
	    do_byte3(f,"lda",&p->q1,t);
	    emit(f,"\ttaz\n");
	    load_lobyte(f,&p->q1,t);
	    emit(f,"\ttax\n");
	    load_hibyte(f,&p->q1,t);
	    emit(f,"\ttay\n");
	  }else{
	    do_lobyte(f,"ldx",&p->q1,t);
	    do_byte3(f,"ldz",&p->q1,t);
	    do_hibyte(f,"ldy",&p->q1,t);
	  }
	  emit(f,"\tlda\t#0\n");
	}else if(t&UNSIGNED){
	  emit(f,"\tldz\t#0\n");
	  if(indirect(&p->q1)){
	    do_byte4(f,"lda",&p->q1,t);
	    emit(f,"\tpha\n");
	    do_byte3(f,"lda",&p->q1,t);
	    emit(f,"\ttax\n");
	    do_hibyte(f,"lda",&p->q1,t);
	    emit(f,"\tply\n");
	  }else{
	    do_hibyte(f,"lda",&p->q1,t);
	    do_byte3(f,"ldx",&p->q1,t);
	    do_byte4(f,"ldy",&p->q1,t);
	  }
	}else{
	  emit(f,"\tldz\t#0\n");
	  if(indirect(&p->q1)){
	    do_byte4(f,"lda",&p->q1,t);
	    emit(f,"\tpha\n");
	    do_byte3(f,"lda",&p->q1,t);
	    emit(f,"\ttax\n");
	    do_hibyte(f,"lda",&p->q1,t);
	    emit(f,"\tply\n");
	  }else{
	    do_hibyte(f,"lda",&p->q1,t);
	    do_byte3(f,"ldx",&p->q1,t);
	    do_byte4(f,"ldy",&p->q1,t);
	  }
	  emit(f,"\tbpl\t%s%d\n",labprefix,++label);
	  emit(f,"\tdez\n");
	  emit(f,"%s%d:\n",labprefix,label);
	}
      }else{
	mnoy=noy;
	ldq_offset(f,&p->q1);
	noy=2;
	emit(f,"\tldq\t");
	emit_obj(f,&p->q1,t);
	emit(f,"\n");
	noy=mnoy;
      }
      if(r){
	emit(f,"\tdec\t%s\n",mregnames[r]);
	emit(f,"\tbmi\t%s%d\n",labprefix,++label);
	emit(f,"%s%d:\n",labprefix,++label);
	emit(f,"\t%s\n",c==LSHIFT?"aslq":((t&UNSIGNED)?"lsrq":"asrq"));
	emit(f,"\tdec\t%s\n",mregnames[r]);
	emit(f,"\tbpl\t%s%d\n",labprefix,label);
	emit(f,"%s%d:\n",labprefix,label-1);
      }else{
	while(--cnt>=0)
	  emit(f,"\t%s\n",c==LSHIFT?"aslq":((t&UNSIGNED)?"lsrq":"asrq"));
      }
      yval=NOVAL;
      mnoy=noy;
      noy=1;
      emit(f,"\tstq\t");
      emit_obj(f,&p->z,t);
      emit(f,"\n");
      noy=mnoy;
      emit(f,"\tldz\t#0\n");
      zzero=mzzero;
      return 1;
    }

    if(c==PUSH){
      if(pushed){
	emit(f,"\tlda\t%s\n",mregnames[sp]);
	emit(f,"\tldx\t%s+1\n",mregnames[sp]);
	emit(f,"\tclc\n");
	emit(f,"\tadc\t#%d\n",pushed);
	emit(f,"\tbcc\t%s%d\n",labprefix,++label);
	emit(f,"\tinx\n");
	emit(f,"%s%d:\n",labprefix,label);
	emit(f,"\tsta\t%s\n",mregnames[t1]);
	emit(f,"\tstx\t%s\n",mregnames[t2]);
      }
      pushed+=4;
    }
    if((c==MULT||c==DIV)&&!m65io){
      emit(f,"\tlda\t#$70\n");
      emit(f,"\tsta\t___m65mathptr\n");
    }
    yval=NOVAL;
    noy=1;
    if((p->q1.flags&(KONST|DREFOBJ))==KONST){
      unsigned long v;
      eval_const(&p->q1.val,q1typ(p));
      v=zum2ul(vumax);
      emit(f,"\tlda\t#%d\n",(int)(v&255));v>>=8;
      emit(f,"\tldx\t#%d\n",(int)(v&255));v>>=8;
      emit(f,"\tldy\t#%d\n",(int)(v&255));v>>=8;
      emit(f,"\tldz\t#%d\n",(int)(v&255));
    }else if(c==GETRETURN){
      emit(f,"\tldq\t%s\n",mregnames[FIRST_BIG]);
    }else{
      noy=2;
      ldq_offset(f,&p->q1);
      emit(f,"\tldq\t");
      /*TODO: VARADR */
      if((p->q1.flags&VARADR)||(p->q1.flags&(KONST|DREFOBJ))==KONST){
	emit(f,"%s%d",labprefix,addfpconst(&p->q1,q1typ(p)));
      }else
	emit_obj(f,&p->q1,t);
      emit(f,"\n");
      noy=1;
    }
    if(c==ADD){
      if((p->q2.flags&(KONST|DREFOBJ))==KONST){
	eval_const(&p->q2.val,t);
	if(zmeqto(vmax,Z1)){noop2=1;emit(f,"\tinq\n");}
	else if(zmeqto(vmax,l2zm(2L))){noop2=1;emit(f,"\tinq\n\tinq\n");}
	else if(zmeqto(vmax,l2zm(3L))){noop2=1;emit(f,"\tinq\n\tinq\n\tinq\n");}
	else if(zmeqto(vmax,l2zm(4L))){noop2=1;emit(f,"\tinq\n\tinq\n\tinq\n\tinq\n");}
      }
      if(!noop2){
	emit(f,"\tclc\n");
	emit(f,"\tadcq\t");
      }
    }else if(c==SUB){
      if((p->q2.flags&(KONST|DREFOBJ))==KONST){
	eval_const(&p->q2.val,t);
	if(zmeqto(vmax,Z1)){noop2=1;emit(f,"\tdeq\n");}
	else if(zmeqto(vmax,l2zm(2L))){noop2=1;emit(f,"\tdeq\n\tdeq\n");}
	else if(zmeqto(vmax,l2zm(3L))){noop2=1;emit(f,"\tdeq\n\tdeq\n\tdeq\n");}
	else if(zmeqto(vmax,l2zm(4L))){noop2=1;emit(f,"\tdeq\n\tdeq\n\tdeq\n\tdeq\n");}
      }
      if(!noop2){
	emit(f,"\tsec\n");
	emit(f,"\tsbcq\t");
      }
    }else if(c==OR){
      emit(f,"\torq\t");
    }else if(c==AND){
      emit(f,"\tandq\t");
    }else if(c==XOR){
      emit(f,"\teorq\t");
    }else if(c==MULT||c==DIV){
      if(m65io){
	emit(f,"\tstq\t$d770\n");
      }else{
	emit(f,"\tstq\t[___m65mathptr]\n");
	emit(f,"\tlda\t#$74\n");
	emit(f,"\tsta\t___m65mathptr\n");
      }
      noy=2;
      ldq_offset(f,&p->q2);
      emit(f,"\tldq\t");
    }
    if(c!=ASSIGN&&c!=PUSH&&c!=GETRETURN&&c!=SETRETURN&&!noop2){
      if((p->q2.flags&VARADR)||(p->q2.flags&(KONST|DREFOBJ))==KONST){
	emit(f,"%s%d",labprefix,addfpconst(&p->q2,q2typ(p)));
      }else
	emit_obj(f,&p->q2,t);
      emit(f,"\n");
    }
    noy=1;
    if(c==MULT||c==DIV){
      if(m65io)
	emit(f,"\tstq\t$d774\n");
      else
	emit(f,"\tstq\t[___m65mathptr]\n");
      if(m65io){
	if(c==DIV){
	  /* delay */
	  emit(f,"\tlda\t$d76c\n");
	  emit(f,"\tlda\t$d76c\n");
	  emit(f,"\tlda\t$d76c\n");
	  emit(f,"\tlda\t$d76c\n");
	  emit(f,"\tldq\t$d76c\n");
	}else
	  emit(f,"\tldq\t$d778\n");
      }else{
	if(c==DIV){
	  emit(f,"\tlda\t#$6c\n");
	  emit(f,"\tsta\t___m65mathptr\n");
	  emit(f,"\tldz\t#0\n");
	  emit(f,"\tlda\t[___m65mathptr],z\n"); /* delay for division */
	}else
	  emit(f,"\tldz\t#4\n");
	emit(f,"\tldq\t[___m65mathptr],z\n");
      }
    }
    emit(f,"\tstq\t");
    if(c==PUSH)
      emit(f,"(%s)",pushed==4?mregnames[sp]:mregnames[t1]);
    else if(c==SETRETURN)
      emit(f,"%s",mregnames[FIRST_BIG]);
    else
      emit_obj(f,&p->z,t);
    emit(f,"\n");
    noy=0;
    if(zzero) 
      emit(f,"\tldz\t#0\n");
    else
      ierror(0);
    return 1;
  }
  return 0;
}

/*  The main code-generation routine.                   */
/*  f is the stream the code should be written to.      */
/*  p is a pointer to a doubly linked list of ICs       */
/*  containing the function body to generate code for.  */
/*  v is a pointer to the function.                     */
/*  offset is the size of the stackframe the function   */
/*  needs for local variables.                          */

void gen_code(FILE *f,struct IC *p,struct Var *v,zmax offset)
/*  The main code-generation.                                           */
{
  int c,t,i;
  struct IC *mi;
  FILE *rf=f;
  static char *dbgfile;
  static int dbgline;

  if(vlas){
    fp=FPVLA_REG;
    if(!reg_pair(fp,&rp)) ierror(0);
    fp1=rp.r1;
    fp2=rp.r2;
    regused[fp]=regused[fp1]=regused[fp2]=1;
   }else{
    fp=sp;
    fp1=sp1;
    fp2=sp2;
  }
  argsize=0;
  localsize=offset;
  if(DEBUG&1) printf("gen_code()\n");

  if(ce02) zzero=1; /* TODO: check what to do */

  cbank=bank(v);

  if(!v->fi) v->fi=new_fi();
  v->fi->flags|=ALL_REGS;

  for(mi=p;mi;mi=mi->next)
    switch_IC(mi);

  for(pass=0;pass<2;pass++){

    if(DEBUG&1) printf("pass %d\n",pass);

    if(pass==0){
      f=0;
      mi=clone_ic(p);
    }else
      f=rf;

    for(c=1;c<=MAXR;c++) regs[c]=0; /*regsa[c];*/
    maxpushed=0;

    /*FIXME*/
    if(v->tattr&INTERRUPT){
      ret="\trti\n";
      in_isr=1;
    }else{
      ret="\trts\n";
      in_isr=0;
    }

    if(!nopeep) peephole(pass==0?p:mi);

    function_top(f,v,localsize);

    pushed=0;

    yval=NOVAL;

    dbgfile=0;
    dbgline=0;

    for(p=pass==0?p:mi;p;pr(f,p),p=p->next){



      if(DEBUG&1) pric2(stdout,p);

      if(debug_info){
	if(p->file&&p->line){
	  if(p->file!=dbgfile||p->line!=dbgline){
	    dbgfile=p->file;
	    dbgline=p->line;
	    emit(f,"; %d \"%s\"\n",dbgline,dbgfile);
	  }
	}
      }

      c=p->code;t=p->typf;

      if(c==NOP) {p->z.flags=0;continue;}
      if(c==ALLOCREG){
	regs[p->q1.reg]=1;
	if(reg_pair(p->q1.reg,&rp)){
	  regs[rp.r1]=1;
	  regs[rp.r2]=1;
	}
	continue;
      }
      if(c==FREEREG){
	regs[p->q1.reg]=0;
	if(reg_pair(p->q1.reg,&rp)){
	  regs[rp.r1]=0;
	  regs[rp.r2]=0;
	}
	continue;
      }
      if(c==LABEL) {emit(f,"%s%d:\n",labprefix,t);yval=NOVAL;continue;}
      if(c==BRA){
	yval=NOVAL;
	if(t==exit_label&&localsize+argsize+rsavesize+rscnt==0)
	  emit(f,ret);
	else
	  emit(f,"\t%s\t%s%d\n",jmpinst,labprefix,t);
	continue;
      }
      if(c>=BEQ&&c<BRA){
	yval=NOVAL;
	continue;
      }

      if(c==MOVETOREG){
	p->code=c=ASSIGN;
	p->typf=t=regtype[p->z.reg]->flags;
	p->q2.val.vmax=sizetab[regtype[p->z.reg]->flags];
      }
      if(c==MOVEFROMREG){
	p->code=c=ASSIGN;
	p->typf=t=regtype[p->q1.reg]->flags;
	p->q2.val.vmax=sizetab[regtype[p->q1.reg]->flags];
      }
      if(c==CONVERT&&ISCHAR(t)&&ISCHAR(p->typf2)){
	p->code=c=ASSIGN;
	p->q2.val.vmax=sizetab[CHAR];
      }
      if(c==CONVERT&&msizetab[t&NQ]==3&&msizetab[p->typf2&NQ]==3){
	p->code=c=ASSIGN;
	p->q2.val.vmax=sizetab[SHORT];
      }
      if(c==CONVERT&&ISSHORT(t)&&ISSHORT(p->typf2)){
	p->code=c=ASSIGN;
	p->q2.val.vmax=sizetab[SHORT];
      }
      if(c==CONVERT&&ISLONG(t)&&ISLONG(p->typf2)){
	p->code=c=ASSIGN;
	p->q2.val.vmax=sizetab[LONG];
      }
      if(c==CONVERT&&ISLLONG(t)&&ISLLONG(p->typf2)){
	p->code=c=ASSIGN;
	p->q2.val.vmax=sizetab[LLONG];
      }
      if(c==CONVERT&&ISFLOAT(t)&&ISFLOAT(p->typf2)){
	p->code=c=ASSIGN;
	p->q2.val.vmax=sizetab[t&NQ];
      }


      /* switch commutative operands if suitable */
      if(c==ADD||c==MULT||c==AND||c==XOR||c==OR||(c==ADDI2P&&ISSHORT(t)&&!ISFPOINTER(p->typf2))){
	if((compare_objects(&p->q2,&p->z)&&!isacc(q1))||isacc(q2)){
	  struct obj tmp;
	  tmp=p->q1;
	  p->q1=p->q2;
	  p->q2=tmp;
	}
      }

      if(c==COMPARE&&((p->q1.flags&(KONST|DREFOBJ))==KONST||ISRIDX(q2)||(isacc(q2)&&!ISRIDX(q1)))){
	obj tmp;IC *b;
	tmp=p->q1;
	p->q1=p->q2;
	p->q2=tmp;
	for(b=p->next;b;b=b->next){
	  int bc;
	  if(!b||b->code==LABEL) ierror(0);
	  bc=b->code;
	  if(bc==BGT){b->code=BLT;break;}
	  if(bc==BGE){b->code=BLE;break;}
	  if(bc==BLT){b->code=BGT;break;}
	  if(bc==BLE){b->code=BGE;break;}
	  if(bc==BNE||bc==BEQ) break;
	}
      }

      c=p->code;
      if(c==SUBPFP) c=SUB;
      /*if(c==ADDI2P) c=ADD;*/
      /*if(c==SUBIFP) c=SUB;*/


      if(c==MINUS){
	if(isacc(q1)&&isacc(z)){
	  emit(f,"\teor\t#255\n");
	  if(c02&&ISCHAR(t)){
	    emit(f,"\tina\n");
	  }else{
	    emit(f,"\tclc\n");
	    emit(f,"\tadc\t#1\n");
	  }
	  if(!ISCHAR(t)){
	    emit(f,"\tpha\n");
	    emit(f,"\ttxa\n");
	    emit(f,"\teor\t#255\n");
	    emit(f,"\tadc\t#0\n");
	    emit(f,"\ttax\n");
	    emit(f,"\tpla\n");
	  }
	  continue;
	}
	p->code=c=SUB;
	p->q2=p->q1;
	p->q1.flags=KONST;
	p->q1.am=0;
	gval.vmax=Z0;
	eval_const(&gval,MAXINT);
	insert_const(&p->q1.val,t);
      }

      preload(f,p);

      if((c==ADD||c==SUB||c==ADDI2P||c==SUBIFP)&&compare_objects(&p->q1,&p->z)&&(!indirect(&p->q1)||(isreg(q1)&&ISIDX(p->q1.reg)))&&isconst(q2)&&!isacc(z)){
	long l;
	eval_const(&p->q2.val,q2typ(p));
	l=zm2l(vmax);
	if(c==ADDI2P/*&&(t2&NQ)==POINTER*/) {c=ADD;t=UNSIGNED|INT;}
	if(c==SUBIFP/*&&(t2&NQ)==POINTER*/) {c=SUB;t=UNSIGNED|INT;}
	if(c==SUB||c==SUBIFP) l=-l;
	/*TODO: allow larger types */
	if(l<3&&l>-3&&(t&NQ)<=INT){
	  if(l<0){
	    if(!c02||!isreg(q1)) get_acc(f,p,CHAR);
	    incmem(f,&p->z,t,SUB,-l);
	  }else
	    incmem(f,&p->z,t,ADD,l);
	  continue;
	}
	if(ISLONG(t)&&((m65&&labs(l)<3)||(optspeed&&l>0&&l<4)||(l>0&&l<2))){
	  if(l<0){
	    incmem(f,&p->z,t,SUB,-l);
	  }else
	    incmem(f,&p->z,t,ADD,l);
	  continue;
	}
      }

      if(m65&&handle_m65(f,p))
	continue;

      if(c==CONVERT){
	int to=q1typ(p)&NU;
	t&=NU;
	if(ISCHAR(t)){
	  if(!isacc(q1))
	    get_acc(f,p,CHAR);
	  load_lobyte(f,&p->q1,to);
	  store_lobyte(f,&p->z,t);
	  continue;
	}
	if(ISLONG(to)){
	  if(!isacc(z))
	    get_acc(f,p,CHAR);
	  if(zm2l(sizetab[t&NQ])==3){
	    do_byte3(f,"lda",&p->q1,to);
	    do_byte3(f,"sta",&p->z,t);
	  }
	  if(zm2l(sizetab[t&NQ])>=2){
	    if(isacc(z)&&!indirect(&p->q1)){
	      do_hibyte(f,"ldx",&p->q1,to);
	    }else{
	      load_hibyte(f,&p->q1,to);
	      store_hibyte(f,&p->z,t);
	    }
	  }
	  load_lobyte(f,&p->q1,to);
	  store_lobyte(f,&p->z,t);
	  continue;
	}
	if(ISSHORT(to)){
	  if((t&UNSIGNED)||ISFPOINTER(t))
	    get_acc(f,p,CHAR);
	  else
	    get_acc(f,p,SHORT);
	  load_lobyte(f,&p->q1,to);
	  store_lobyte(f,&p->z,t);
	  load_hibyte(f,&p->q1,to);
	  store_hibyte(f,&p->z,t);
	  if(ISFPOINTER(t)){
	    int b=-1;
	    if((p->q1.flags&(VARADR|DREFOBJ))==VARADR) b=bank(p->q1.v);
	    emit(f,"\tlda\t#%d\n",b>=0?b:bankcnum);
	    do_byte3(f,"sta",&p->z,t);
	    continue;
	  }
	  if(to&UNSIGNED){
	    if(zzero&&!indirect(&p->z)){
	      do_byte3(f,"stz",&p->z,t);
	      do_byte4(f,"stz",&p->z,t);
	    }else{
	      emit(f,"\tlda\t#0\n");
	      do_byte3(f,"sta",&p->z,t);
	      do_byte4(f,"sta",&p->z,t);
	    }
	  }else{
	    emit(f,"\tldx\t#0\n");
	    emit(f,"\tcmp\t#0\n");
	    emit(f,"\tbpl\t%s%d\n",labprefix,++label);
	    emit(f,"\tdex\n");
	    emit(f,"%s%d:\n",labprefix,label);
	    if(indirect(&p->z)){
	      emit(f,"\ttxa\n");
	      do_byte3(f,"sta",&p->z,t);
	      do_byte4(f,"sta",&p->z,t);
	    }else{
	      do_byte3(f,"stx",&p->z,t);
	      do_byte4(f,"stx",&p->z,t);
	    }
	  }
	  continue;
	}
	if(ISCHAR(to)){
	  if(to&UNSIGNED){
	    char *s;
	    get_acc(f,p,CHAR);
	    if(isreg(q1)&&p->q1.reg==rx&&!indirect(&p->z)){
	      do_lobyte(f,"stx",&p->z,CHAR);
	    }else{
	      load_lobyte(f,&p->q1,to);
	      store_lobyte(f,&p->z,t);
	    }
	    if(isacc(z)){
	      emit(f,"\tldx\t#0\n");
	      continue;
	    }
	    if(zzero&&!indirect(&p->z))
	      s="stz";
	    else{
	      emit(f,"\tlda\t#0\n");
	      s="sta";
	    }
	    do_hibyte(f,s,&p->z,t);
	    if(ISLONG(t)){
	      do_byte3(f,s,&p->z,t);
	      do_byte4(f,s,&p->z,t);
	    }
	  }else{
	    int l=++label;
	    get_acc(f,p,SHORT);
	    emit(f,"\tldx\t#0\n");
	    if(isreg(q1)&&p->q1.reg==ra)
	      emit(f,"\tcmp\t#0\n");
	    else
	      load_lobyte(f,&p->q1,to);
	    emit(f,"\tbpl\t%s%d\n",labprefix,label);
	    emit(f,"\tdex\n");
	    emit(f,"%s%d:\n",labprefix,label);
	    store_lobyte(f,&p->z,t);
	    if(indirect(&p->z)&&(!isreg(z)||p->z.reg!=rax)){
	      emit(f,"\ttxa\n");
	      store_hibyte(f,&p->z,t);
	      if(ISLONG(t)){
		do_byte3(f,"sta",&p->z,t);
		do_byte4(f,"sta",&p->z,t);
	      }
	    }else{
	      if(!isreg(z)||p->z.reg!=rax){
		emit(f,"\tstx\t");
		emit_hibyte(f,&p->z,t);
		emit(f,"\n");
	      }
	      if(ISLONG(t)){
		do_byte3(f,"stx",&p->z,t);
		do_byte4(f,"stx",&p->z,t);
	      }
	    }
	  }
	  if(ISFPOINTER(t)){
	    emit(f,"\tlda\t#%d\n",cbank>=0?cbank:bankcnum);
	    do_byte3(f,"sta",&p->z,t);
	  }
	  continue;
	}
	if(ISFPOINTER(to)){
	  get_acc(f,p,CHAR);
	  if(zm2l(sizetab[t&NQ])>=3){
	    do_byte3(f,"lda",&p->q1,to);
	    do_byte3(f,"sta",&p->z,t);
	  }
	  if(zm2l(sizetab[t&NQ])>=2){
	    load_hibyte(f,&p->q1,to);
	    store_hibyte(f,&p->z,t);
	  }
	  load_lobyte(f,&p->q1,to);
	  store_lobyte(f,&p->z,t);

	  continue;
	}
	pric2(stdout,p);
	ierror(0);
      }

      if(c==KOMPLEMENT){
	get_acc(f,p,CHAR);
	if(ISCHAR(t)){
	  load_acc(f,&p->q1,t);
	  emit(f,"\teor\t#-1\n");
	  store_acc(f,&p->z,t);
	}else{
	  if(isacc(q1))
	    emit(f,"\tpha\n");
	  if(ISLONG(t)){
	    do_byte4(f,"lda",&p->q1,t);
	    emit(f,"\teor\t#-1\n");
	    do_byte4(f,"sta",&p->z,t);
	    do_byte3(f,"lda",&p->q1,t);
	    emit(f,"\teor\t#-1\n");
	    do_byte3(f,"sta",&p->z,t);
	  }
	  load_hibyte(f,&p->q1,t);
	  emit(f,"\teor\t#-1\n");
	  store_hibyte(f,&p->z,t);
	  if(isacc(q1))
	    emit(f,"\tpla\n");
	  load_lobyte(f,&p->q1,t);
	  emit(f,"\teor\t#-1\n");
	  store_lobyte(f,&p->z,t);
	}
	continue;
      }
      if(c==SETRETURN){
	hasretval=1;
	t&=NQ;
	if(isreg(q1)&&p->q1.reg==p->z.reg) continue;
	if(t==LONG||t==LLONG||ISFLOAT(t)||ISFPOINTER(t)){
	  long l=zm2l(p->q2.val.vmax);
	  int zr=p->z.reg;
	  //get_acc(f,p,t);
	  if((optsize||l>4)&&!ISFPOINTER(t)){
	    int ind=indirect(&p->q1);
	    if(ind) load_address(f,LAST_PAIR,&p->q1,t);
	    BSET(regused,t3);
	    BSET(regused,t4);
	    sety(f,l-1);
	    emit(f,"%s%d:\n",labprefix,++label);
	    if(ind)
	      emit(f,"\tlda\t(%s),y\n",mregnames[LAST_PAIR]);
	    else{
	      emit(f,"\tlda\t");
	      if(!ISFLOAT(t)&&(p->q1.flags&(KONST|DREFOBJ))==KONST){
		emit(f,"%s%d",labprefix,addfpconst(&p->q1,t));
	      }else
		emit_obj(f,&p->q1,t);
	      emit(f,",y\n");
	    }
	    emit(f,"\tsta\t%s,y\n",mregnames[zr]);
	    emit(f,"\tdey\n");
	    emit(f,"\tbpl\t%s%d\n",labprefix,label);
	    yval=255;
	  }else{
	    if((p->q1.flags&(REG|DREFOBJ))==(REG|DREFOBJ)){
	      if(p->q1.reg==zr){
		int r=get_reg(f,p,POINTER);
		if(r==FIRST_PAIR||r==FIRST_PAIR+1)
		  ierror(0);
		if(!reg_pair(r,&rp2)) ierror(0);
		emit(f,"\tlda\t%s\n",mregnames[zr]);
		emit(f,"\tsta\t%s\n",mregnames[rp2.r1]);
		emit(f,"\tlda\t%s+1\n",mregnames[zr]);
		emit(f,"\tsta\t%s\n",mregnames[rp2.r2]);
		p->q1.reg=r;
	      }
	    }
	    load_lobyte(f,&p->q1,t);
	    emit(f,"\tsta\t%s\n",mregnames[zr]);
	    load_hibyte(f,&p->q1,t);
	    emit(f,"\tsta\t%s+1\n",mregnames[zr]);
	    do_byte3(f,"lda",&p->q1,t);
	    emit(f,"\tsta\t%s+2\n",mregnames[zr]);
	    if(!ISFPOINTER(t)){
	      do_byte4(f,"lda",&p->q1,t);
	      emit(f,"\tsta\t%s+3\n",mregnames[zr]);
	    }
	    /*TODO:regused OLDFP */
	    regused[zr]=1;
	  }
	  continue;
	}
	//get_acc(f,p,t);
	load_acc(f,&p->q1,t);
	regused[ra]=1;
	regused[rx]=1;
	continue;
      }
      if(c==GETRETURN){
	t&=NQ;
	if(isreg(z)&&p->q1.reg==p->z.reg) continue;
	if(t==LONG||t==LLONG||ISFLOAT(t)||ISFPOINTER(t)){
	  long l=zm2l(p->q2.val.vmax);
	  int qr=p->q1.reg;
	  if((optsize||l>4)&&!ISFPOINTER(t)){
	    int ind=indirect(&p->z);
	    if(ind) load_address(f,LAST_PAIR,&p->z,t);
	    BSET(regused,t3);
	    BSET(regused,t4);
	    sety(f,l-1);
	    emit(f,"%s%d:\n",labprefix,++label);
	    emit(f,"\tlda\t%s,y\n",mregnames[qr]);
	    if(ind)
	      emit(f,"\tsta\t(%s),y\n",mregnames[LAST_PAIR]);
	    else{
	      emit(f,"\tsta\t");
	      emit_obj(f,&p->z,t);
	      emit(f,",y\n");
	    }
	    emit(f,"\tdey\n");
	    emit(f,"\tbpl\t%s%d\n",labprefix,label);
	    yval=255;
	  }else{
	    if((p->z.reg&(REG|DREFOBJ))==(REG|DREFOBJ)){
	      if(p->z.reg==qr) ierror(0);
	    }
	    emit(f,"\tlda\t%s\n",mregnames[qr]);
	    store_lobyte(f,&p->z,t);
	    emit(f,"\tlda\t%s+1\n",mregnames[qr]);
	    store_hibyte(f,&p->z,t);
	    emit(f,"\tlda\t%s+2\n",mregnames[qr]);
	    do_byte3(f,"sta",&p->z,t);
	    if(!ISFPOINTER(t)){
	      emit(f,"\tlda\t%s+3\n",mregnames[qr]);
	      do_byte4(f,"sta",&p->z,t);
	    }
	  }
	  continue;
	}
	if(p->q1.reg)
	  store_acc(f,&p->z,t);
	continue;
      }
      if(c==CALL){
	int reg;

	if(argsize<zm2l(p->q2.val.vmax)) argsize=zm2l(p->q2.val.vmax);

	/*FIXME*/
#if 0      
	if(stack_valid&&(p->q1.flags&(VAR|DREFOBJ))==VAR&&p->q1.v->fi&&(p->q1.v->fi->flags&ALL_STACK)){
	  if(framesize+zum2ul(p->q1.v->fi->stack1)>stack)
	    stack=framesize+zum2ul(p->q1.v->fi->stack1);
	}else
	  stack_valid=0;
#endif
	if((p->q1.flags&(VAR|DREFOBJ))==VAR&&!strcmp("__va_start",p->q1.v->identifier)){
	  long of=va_offset(v)+localsize+rsavesize+argsize;
	  emit(f,"\tlda\t%s\n",mregnames[fp]);
	  if(of){
	    emit(f,"\tclc\n");
	    if(of&255)
	      emit(f,"\tadc\t#%d\n",(of&255));
	  }
	  emit(f,"\tldx\t%s+1\n",mregnames[fp]);
	  if(of&0xff00){
	    emit(f,"\tpha\n");
	    emit(f,"\ttxa\n");
	    emit(f,"\tadc\t#%d\n",(of>>8)&255);
	    emit(f,"\ttax\n");
	    emit(f,"\tpla\n");
	  }else if(of){
	    emit(f,"\tbcc\t%s%d\n",labprefix,++label);
	    emit(f,"\tinx\n");
	    emit(f,"%s%d:\n",labprefix,label);
	  }
	  continue;
	}
	if((p->q1.flags&(VAR|DREFOBJ))==VAR&&p->q1.v->fi&&p->q1.v->fi->inline_asm){
	  emit(f,";startinline\n");
	  emit_inline_asm(f,p->q1.v->fi->inline_asm);
	  emit(f,";endinline\n");
	}else if(p->q1.flags&DREFOBJ){
	  if(ISFPOINTER(p->q1.dtyp)){
	    p->q1.flags&=~DREFOBJ;
	    load_reg(f,LAST_PAIR,&p->q1,POINTER);
	    if(indirect(&p->q1)){
	      do_byte3(f,"lda",&p->q1,FPOINTER);
	      emit(f,"\ttay\n");
	    }else
	      do_byte3(f,"ldy",&p->q1,FPOINTER);
	    emit(f,"\tlda\t#%d\n",cbank>=0?cbank:bankcnum);
	    emit(f,"\tjsr\t%s__bankjsr\n",idprefix);
	    yval=NOVAL;
	  }else{
	    if(!(p->q1.flags&REG)) ierror(0);
	    emit(f,"\tjsr\t%s%d\n",labprefix,++label);
	    yval=NOVAL;
	    add_cmplist(label,p->q1.reg,JMPIND);
	  }
	}else{
	  int tbank=-1;
	  if(p->q1.flags&VAR) tbank=bank(p->q1.v);
	  if(tbank!=cbank&&tbank>=0){
	    if(cbank>=0){
	      load_address(f,LAST_PAIR,&p->q1,t);
	      sety(f,tbank);
	      emit(f,"\tlda\t#%d\n",cbank);
	      emit(f,"\tjsr\t%s__bankjsr\n",idprefix);
	      yval=NOVAL;
	      continue;
	    }
	    sety(f,tbank);
	    emit(f,"\tjsr\t%s__bankswitch\n",idprefix);
	    yval=NOVAL;
	  }
	  if((p->q1.flags&VAR)&&!strcmp(p->q1.v->identifier,"_fmemcpy"))
	    emit(f,"\tlda\t#%d\n",cbank>=0?cbank:bankcnum);
	  emit(f,"\tjsr\t");
	  emit_obj(f,&p->q1,t);
	  emit(f,"\n");
	}
	pushed-=zm2l(p->q2.val.vmax);
	if(!calc_regs(p,f!=0)&&v->fi) v->fi->flags&=~ALL_REGS;
	yval=NOVAL;
	continue;
      }
      if(c==ASSIGN||c==PUSH){
	if(t==0) ierror(0);
	if((p->q1.flags&(KONST|DREFOBJ))==KONST&&(t&NQ)==LLONG){
	  int i;
	  eval_const(&p->q1.val,t);
	  for(i=0;i<8;i++){
	    emit(f,"\tlda\t#%d\n",zm2l(vmax)&255);
	    vmax=zmrshift(vmax,l2zm(8L));
	    if(c==PUSH||(p->z.flags&DREFOBJ)){
	      sety(f,i+((c==PUSH)?pushed:0));
	      emit(f,"\tsta\t(%s),y\n",(c==PUSH)?mregnames[sp]:mregnames[p->z.reg]);
	    }else{
	      p->z.val.vmax=zmadd(p->z.val.vmax,l2zm((long)i));
	      emit(f,"\tsta\t");
	      emit_lobyte(f,&p->z,t);
	      emit(f,"\n");
	      p->z.val.vmax=zmsub(p->z.val.vmax,l2zm((long)i));
	    }
	  }
	  if(c==PUSH) pushed+=8;
	  continue;
	}  

	if(!zmleq(p->q2.val.vmax,l2zm(4L))){
	  long len=zm2l(p->q2.val.vmax);
	  int r1,r2,loops,looplab;
	  if(len>32767) ierror(0);
	  if(!NOBANKVARS){
	    int bq=-1,bz=-1,s=-1;
	    if((p->q1.flags&(VAR|DREFOBJ))==VAR) bq=bank(p->q1.v);
	    if((p->z.flags&(VAR|DREFOBJ))==VAR) bz=bank(p->z.v);
	    if(((p->q1.flags&DREFOBJ)&&ISFPOINTER(p->q1.dtyp))||
	       ((p->z.flags&DREFOBJ)&&ISFPOINTER(p->z.dtyp))){
	      far_copy(f,p);
	      continue;
	    }
	    if(cbank<0){
	      if(bq>=0&&bz>=0){
		if(bq!=bz){
		  far_copy(f,p);
		  continue;
		}
		s=bq;
	      }else{
		if(bq>=0) s=bq;
		if(bz>=0) s=bz;
	      }
	      if(s>=0){
		sety(f,s);
		emit(f,"\tjsr\t%s__bankswitch\n",idprefix);
		yval=NOVAL;
	      }
	    }else{
	      if((bq>=0&&bq!=cbank)||(bz>=0&&bz!=cbank)){
		far_copy(f,p);
		continue;
	      }
	    }
	  }
	  get_acc(f,p,CHAR);
	  if((p->q1.flags&(DREFOBJ|KONST))==DREFOBJ){
	    if(p->q1.flags&REG){
	      r1=p->q1.reg;
	      if(!reg_pair(r1,&rp)) ierror(0);
	      if(len>128){
		emit(f,"\tlda\t%s\n",mregnames[rp.r1]);
		emit(f,"\tclc\n");
		if(len&128)
		  emit(f,"\tadc\t#128\n");
		emit(f,"\tsta\t%s\n",mregnames[rp.r1]);
		if(len>255){
		  emit(f,"\tlda\t%s\n",mregnames[rp.r2]);
		  emit(f,"\tadc\t#%ld\n",(len>>8)&255);
		  emit(f,"\tsta\t%s\n",mregnames[rp.r2]);	
		}else{
		  emit(f,"\tbcc\t%s%d\n",labprefix,++label);
		  emit(f,"\tinc\t%s\n",mregnames[rp.r2]);
		  emit(f,"%s%d:\n",labprefix,label);
		}
	      }
	    }else
	      ierror(0);
	  }else if(!indirect(&p->q1)&&len<=128&&(p->q1.flags&(DREFOBJ|KONST))!=KONST){
	    r1=0;
	  }else{
	    Var *v=p->q1.v;
	    /*if((p->q1.flags&(VARADR|VAR))!=VAR) ierror(0);*/
	    /*printf("len=%ld %ld\n",len,len&0xff80);*/
	    r1=get_reg(f,p,POINTER);
	    if(len>128) p->q1.val.vmax=zmadd(p->q1.val.vmax,l2zm((len-1)&0xff80));
	    load_address(f,r1,&p->q1,t);
	    if(len>128) p->q1.val.vmax=zmsub(p->q1.val.vmax,l2zm((len-1)&0xff80));
	  }
	  if((p->z.flags&(DREFOBJ|KONST))==DREFOBJ){
	    if(p->z.flags&REG){
	      r2=p->z.reg;
	      if(!reg_pair(r2,&rp)) ierror(0);
	      if(len>128){
		emit(f,"\tlda\t%s\n",mregnames[rp.r1]);
		emit(f,"\tclc\n");
		if(len&128)
		  emit(f,"\tadc\t#128\n");
		emit(f,"\tsta\t%s\n",mregnames[rp.r1]);
		if(len>255){
		  emit(f,"\tlda\t%s\n",mregnames[rp.r2]);
		  emit(f,"\tadc\t#%ld\n",(len>>8)&255);
		  emit(f,"\tsta\t%s\n",mregnames[rp.r2]);	
		}else{
		  emit(f,"\tbcc\t%s%d\n",labprefix,++label);
		  emit(f,"\tinc\t%s\n",mregnames[rp.r2]);
		  emit(f,"%s%d:\n",labprefix,label);
		}
	      }
	    }else
	      ierror(0);
	  }else if(c==PUSH){
	    if(len<=128&&pushed==0){
	      r2=sp;
	    }else{
	      r2=get_reg(f,p,POINTER);
	      if(!reg_pair(r2,&rp)) ierror(0);
	      emit(f,"\tlda\t%s\n",mregnames[sp]);
	      emit(f,"\tclc\n");
	      if(((pushed+(len&128))&255)!=0)
		emit(f,"\tadc\t#%ld\n",(pushed+(len&128))&255);
	      emit(f,"\tsta\t%s\n",mregnames[rp.r1]);
	      emit(f,"\tlda\t%s\n",mregnames[sp2]);
	      emit(f,"\tadc\t#%ld\n",((pushed+len)>>8)&255);
	      emit(f,"\tsta\t%s\n",mregnames[rp.r2]);
	    }
	  }else if(!indirect(&p->z)&&len<=128){
	    r2=0;
	  }else{
	    Var *v=p->z.v;
	    r2=get_reg(f,p,POINTER);
	    if(len>128) p->z.val.vmax=zmadd(p->z.val.vmax,l2zm((len-1)&0xff80));
	    load_address(f,r2,&p->z,t);
	    if(len>128) p->z.val.vmax=zmsub(p->z.val.vmax,l2zm((len-1)&0xff80));
	  }
	  if(len>128){
	    get_acc(f,p,POINTER); /* get x */
	    emit(f,"\tldx\t#%ld\n",(((len-128)>>7)+1)&255);
	  }
	  sety(f,(len-1)&127);
	  if((optsize&&len>4)||len>8){
	    emit(f,"%s%d:\n",labprefix,looplab=++label);
	    if(optsize)
	      loops=1;
	    else{
	      if((len&3)==0)
		loops=4;
	      else if((len&1)==0)
		loops=2;
	      else
		loops=1;
	    }
	  }else
	    loops=len;
	  if(r1&&!reg_pair(r1,&rp)) ierror(0);
	  if(r2&&!reg_pair(r2,&rp2)) ierror(0);
	  for(i=0;i<loops;i++){
	    if(r1)
	      emit(f,"\tlda\t(%s),y\n",mregnames[rp.r1]);
	    else{
	      emit(f,"\tlda\t");
	      emit_obj(f,&p->q1,t);
	      emit(f,",y\n");
	    }
	    if(r2)
	      emit(f,"\tsta\t(%s),y\n",mregnames[rp2.r1]);
	    else{
	      emit(f,"\tsta\t");
	      emit_obj(f,&p->z,t);
	      emit(f,",y\n");
	    }
	    emit(f,"\tdey\n");
	  }
	  if(loops!=len){
	    emit(f,"\tbpl\t%s%d\n",labprefix,label);
	  }	  
	  if(len>128){
	    emit(f,"\tlda\t%s\n",mregnames[rp.r1]);
	    emit(f,"\tsec\n");
	    emit(f,"\tsbc\t#128\n");
	    emit(f,"\tsta\t%s\n",mregnames[rp.r1]);
	    emit(f,"\tbcs\t%s%d\n",labprefix,++label);
	    emit(f,"\tdec\t%s\n",mregnames[rp.r2]);
	    emit(f,"%s%d:\n",labprefix,label);
	    emit(f,"\tlda\t%s\n",mregnames[rp2.r1]);
	    emit(f,"\tsec\n");
	    emit(f,"\tsbc\t#128\n");
	    emit(f,"\tsta\t%s\n",mregnames[rp2.r1]);
	    emit(f,"\tbcs\t%s%d\n",labprefix,++label);
	    emit(f,"\tdec\t%s\n",mregnames[rp2.r2]);
	    emit(f,"%s%d:\n",labprefix,label);
	    emit(f,"\tldy\t#127\n");
	    emit(f,"\tdex\n");
	    emit(f,"\tbne\t%s%d\n",labprefix,looplab);
	  }
	  yval=NOVAL;
	  if(c==PUSH)
	    pushed+=zm2l(p->q2.val.vmax);
	  continue;
	}
	if(c==PUSH){
	  if(!scratch(p->next,ra,1))
	    get_acc(f,p,CHAR);
	  load_lobyte(f,&p->q1,t);
	  if(zzero&&pushed==0){
	    emit(f,"\tsta\t(%s)\n",mregnames[sp]);
	  }else{
	    sety(f,pushed);
	    emit(f,"\tsta\t(%s),y\n",mregnames[sp]);
	  }
	  if(!zmleq(p->q2.val.vmax,Z1)){
	    load_hibyte(f,&p->q1,t);
	    sety(f,pushed+1);
	    emit(f,"\tsta\t(%s),y\n",mregnames[sp]);
	  }
	  if(!zmleq(p->q2.val.vmax,l2zm(2L))){
	    do_byte3(f,"lda",&p->q1,t);
	    sety(f,pushed+2);
	    emit(f,"\tsta\t(%s),y\n",mregnames[sp]);
	  }
	  if(!zmleq(p->q2.val.vmax,l2zm(3L))){
	    do_byte4(f,"lda",&p->q1,t);
	    sety(f,pushed+3);
	    emit(f,"\tsta\t(%s),y\n",mregnames[sp]);
	  }

	  pushed+=zm2l(p->q2.val.vmax);
	  continue;
	}
	if(c==ASSIGN){
	  int c2m;unsigned long v;
	  if(isreg(q1)&&isreg(z)&&p->q1.reg==p->z.reg) continue;
	  if(isacc(q1)){
	    if(p->q1.reg==rax&&indirect(&p->z)) get_acc(f,p,CHAR);
	    store_acc(f,&p->z,t);
	    continue;
	  }
	  if(zzero&&!indirect(&p->z)&&(p->q1.flags&(DREFOBJ|KONST))==KONST){
	    eval_const(&p->q1.val,t);
	    if(ISFLOAT(t)){
	      cnv_fp();
	      v=zum2ul(zm2zum(vmax));
	    }else
	      v=zum2ul(vumax);
	    c2m=1;
	  }else
	    c2m=0;
	  if(!c2m||v!=0)
	    get_acc(f,p,CHAR);
	  if(0/*ISCHAR(t)*/){
	    load_acc(f,&p->q1,t);
	    store_acc(f,&p->z,t);
	  }else{
	    if(!zmleq(p->q2.val.vmax,l2zm(3L))){
	      if(c2m&&(v&0xFF000000)==0){
		do_byte4(f,"stz",&p->z,t);
	      }else{
		do_byte4(f,"lda",&p->q1,t);
		do_byte4(f,"sta",&p->z,t);
	      }
	    }
	    if(!zmleq(p->q2.val.vmax,l2zm(2L))){
	      if(c2m&&(v&0xFF0000)==0){
		do_byte3(f,"stz",&p->z,t);
	      }else{
		do_byte3(f,"lda",&p->q1,t);
		do_byte3(f,"sta",&p->z,t);
	      }
	    }
	    if(!zmleq(p->q2.val.vmax,l2zm(1L))){
	      if(isreg(z)&&p->z.reg==rax&&!indirect(&p->q1)){
		do_hibyte(f,"ldx",&p->q1,t);
	      }else if(c2m&&(v&0xFF00)==0){
		do_hibyte(f,"stz",&p->z,t);
	      }else{
		load_hibyte(f,&p->q1,t);
		store_hibyte(f,&p->z,t);
	      }
	    }
	    if(c2m&&(v&0xFF)==0){
	      do_lobyte(f,"stz",&p->z,t);
	    }else{
	      if(isreg(q1)&&ISIDX(p->q1.reg)){
		store_reg(f,p->q1.reg,&p->z,CHAR);
	      }else if(isreg(z)&&ISIDX(p->z.reg)){
		load_reg(f,p->z.reg,&p->q1,t);
	      }else{
		load_lobyte(f,&p->q1,t);
		store_lobyte(f,&p->z,t);
	      }
	    }
	  }
	}
	continue;
      }
      if(c==ADDRESS){
	long o=real_offset(&p->q1);
	get_acc(f,p,CHAR);
	emit(f,"\tlda\t%s\n",mregnames[fp1]);
	if(o){
	  emit(f,"\tclc\n");
	  if((o&255)!=0)
	    emit(f,"\tadc\t#%ld\n",real_offset(&p->q1)&255);
	}
	if(isacc(z)){
	  if(o==0) {emit(f,"\tldx\t%s\n",mregnames[fp2]);continue;}
	  if(o==256){emit(f,"\tldx\t%s\n\tinx\n",mregnames[fp2]);continue;}
	  if(o==512){emit(f,"\tldx\t%s\n\tinx\n\tinx\n",mregnames[fp2]);continue;}
	  if(o<256){++label;emit(f,"\tldx\t%s\n\tbcc\t%s%d\n\tinx\n%s%d:\n",mregnames[fp2],labprefix,label,labprefix,label);continue;}
	  if(o<512){++label;emit(f,"\tldx\t%s\n\tinx\n\tbcc\t%s%d\n\tinx\n%s%d:\n",mregnames[fp2],labprefix,label,labprefix,label);continue;}
	}
	store_lobyte(f,&p->z,t);
	if(isacc(z)) emit(f,"\tpha\n");
	emit(f,"\tlda\t%s\n",mregnames[fp2]);
	if(o!=0)
	  emit(f,"\tadc\t#%ld\n",real_offset(&p->q1)>>8&255);
	store_hibyte(f,&p->z,t);
	if(isacc(z)) emit(f,"\tpla\n");
	continue;
      }

      if(c==COMPARE||c==TEST){
	IC *branch=p->next;
	int pacc=0,bc,bout;
	if(ISPOINTER(t)) t|=UNSIGNED;
	while(branch){
	  if(branch->code>=BEQ&&branch->code<BRA)
	    break;
	  if(branch->code!=FREEREG&&branch->code!=ALLOCREG&&branch->code!=NOP)
	    ierror(0);
	  branch=branch->next;
	}
	bc=branch->code;
	bout=branch->typf;
	if(c==TEST){
	  p->q2.flags=KONST;
	  gval.vmax=Z0;
	  eval_const(&gval,MAXINT);
	  insert_const(&p->q2.val,t);
	}
	if((t&NU)==(UNSIGNED|CHAR)&&(bc==BLE||bc==BGT)&&(p->q2.flags&(DREFOBJ|KONST))==KONST){
	  eval_const(&p->q2.val,t);
	  if(!zmeqto(vmax,l2zm(255L))){
	    vmax=zmadd(vmax,Z1);
	    gval.vmax=vmax;
	    eval_const(&gval,t);
	    insert_const(&p->q2.val,t);
	    if(bc==BLE) bc=BLT; else bc=BGE;
	    branch->code=bc;
	  }
	}
	if(((t&NQ)==SHORT||(t&NQ)==INT||(t&NQ)==LONG)&&(bc==BNE||bc==BEQ)&&isconst(q2)&&!isacc(q1)){
	  eval_const(&p->q2.val,t);
	  if(zmeqto(vmax,Z0)&&zumeqto(vumax,ZU0)){
	    if(pacc=cmp_get_acc(f,p,branch))
	      bout=++label;
	    load_lobyte(f,&p->q1,t);
	    do_hibyte(f,"ora",&p->q1,t);
	    if((t&NQ)==LONG){
	      do_byte3(f,"ora",&p->q1,t);
	      do_byte4(f,"ora",&p->q1,t);
	    }
	    emit(f,"\t%s\t%s%d\n",(bc==BNE)?"bne":"beq",labprefix,bout);
	    if(pacc){
	      reload_acc(f);
	      add_cmplist(bout,branch->typf,pacc);
	    }
	    continue;
	  }
	}
	if(ieee&&ISFLOAT(t)){
	  if(!ieee) ierror(0);
	  t&=NQ;
	  if(regs[LAST_PAIR]) ierror(0);
	  regs[LAST_PAIR]=1;
	  if(regs[ra]||regs[rax])
	    ierror(0);
	  load_address(f,LAST_PAIR,&p->q2,t);
	  BSET(regused,t3);
	  BSET(regused,t4);
	  emit(f,"\tjsr\t%s__fload%c\n",idprefix,(t==FLOAT?'s':'d'));
	  yval=NOVAL;
	  load_address(f,LAST_PAIR,&p->q1,t);
	  emit(f,"\tjsr\t%s__fcmp%c\n",idprefix,(t==FLOAT?'s':'d'));
	  yval=NOVAL;
	  regs[LAST_PAIR]=0;
	  if(bc==BLT||bc==BLE)
	    emit(f,"\tbmi\t%s%d\n",labprefix,bout);
	  else if(bc==BGT|bc==BGE)
	    emit(f,"\tbvs\t%s%d\n",labprefix,bout);
	  if(bc==BEQ||bc==BLE||bc==BGE)
	    emit(f,"\tbeq\t%s%d\n",labprefix,bout);
	  if(bc==BNE)
	    emit(f,"\tbne\t%s%d\n",labprefix,bout);
	  continue;
	}
	if(ISCHAR(t)){
	  char *s=0;
	  if(isreg(q1)&&ISIDX(p->q1.reg)&&!indirect(&p->q2)&&(bc==BEQ||bc==BNE||(t&UNSIGNED))){
	    static char buf[4]="cpr";
	    s=buf;s[2]=mregnames[p->q1.reg][0];
	  }else{
	    if(pacc=cmp_get_acc(f,p,branch))
	      bout=++label;
	    load_acc(f,&p->q1,t);
	    if(bc==BEQ||bc==BNE||(t&UNSIGNED)){
	      s="cmp";
	    }else{
	      if(bc==BLT||bc==BGE)
		emit(f,"\tsec\n");
	      else
		emit(f,"\tclc\n");
	      s="sbc";
	    }
	  }
	  if(c==TEST)
	    emit(f,"\t%s\t#0\n",s);
	  else
	    do_lobyte(f,s,&p->q2,t);
	  if(bc==BEQ)
	    emit(f,"\tbeq\t%s%d\n",labprefix,bout);
	  else if(bc==BNE)
	    emit(f,"\tbne\t%s%d\n",labprefix,bout);
	  else if(t&UNSIGNED){
	    if(bc==BLT)
	      emit(f,"\tbcc\t%s%d\n",labprefix,bout);
	    else if(bc==BGE)
	      emit(f,"\tbcs\t%s%d\n",labprefix,bout);
	    else if(bc==BLE){
	      emit(f,"\tbcc\t%s%d\n",labprefix,bout);
	      emit(f,"\tbeq\t%s%d\n",labprefix,bout);
	    }else if(bc==BGT){
	      emit(f,";\n\tbeq\t%s%d\n",labprefix,++label);
	      emit(f,"\tbcs\t%s%d\n",labprefix,bout);
	      emit(f,"%s%d:\n",labprefix,label);
	    }else
	      ierror(0);
	  }else{
	    emit(f,"\tbvc\t%s%d\n",labprefix,++label);
	    emit(f,"\teor\t#128\n");
	    emit(f,"%s%d:\n",labprefix,label);
	    if(bc==BLT||bc==BLE)
	      emit(f,"\tbmi\t%s%d\n",labprefix,bout);
	    else
	      emit(f,"\tbpl\t%s%d\n",labprefix,bout);
	  }
	  if(pacc){
	    reload_acc(f);
	    add_cmplist(bout,branch->typf,pacc);
	  }
	  continue;
	}else if(bc==BEQ||bc==BNE||(t&UNSIGNED)||ISFPOINTER(t)){
	  int in=0;
	  if(pacc=cmp_get_acc(f,p,branch))
	    bout=++label;
	  if(ISLONG(t)){
	    do_byte4(f,"lda",&p->q1,t);
	    if(c==TEST)
	      emit(f,"\tcmp\t#0\n");
	    else
	      do_byte4(f,"cmp",&p->q2,t);
	    if(bc==BEQ)
	      emit(f,"\tbne\t%s%d\n",labprefix,in=++label);
	    else if(bc==BNE)
	      emit(f,"\tbne\t%s%d\n",labprefix,bout);
	    else if(bc==BLT||bc==BLE){
	      emit(f,"\tbcc\t%s%d\n",labprefix,bout);
	      emit(f,"\tbne\t%s%d\n",labprefix,in=++label);
	    }else if(bc==BGE||bc==BGT){
	      emit(f,"\tbcc\t%s%d\n",labprefix,in=++label);	
	      emit(f,"\tbne\t%s%d\n",labprefix,bout);
	    }else
	      ierror(0);
	  }
	  if(ISLONG(t)||ISFPOINTER(t)){
	    do_byte3(f,"lda",&p->q1,t);
	    if(c==TEST)
	      emit(f,"\tcmp\t#0\n");
	    else
	      do_byte3(f,"cmp",&p->q2,t);
	    if(bc==BEQ)
	      emit(f,"\tbne\t%s%d\n",labprefix,in?in:(in=++label));
	    else if(bc==BNE)
	      emit(f,"\tbne\t%s%d\n",labprefix,bout);
	    else if(bc==BLT||bc==BLE){
	      emit(f,"\tbcc\t%s%d\n",labprefix,bout);
	      emit(f,"\tbne\t%s%d\n",labprefix,in?in:(in=++label));
	    }else if(bc==BGE||bc==BGT){
	      emit(f,"\tbcc\t%s%d\n",labprefix,in?in:(in=++label));	
	      emit(f,"\tbne\t%s%d\n",labprefix,bout);
	    }else
	      ierror(0);	  
	  }
	  if(isacc(q1)){
	    if(!indirect(&p->q2)){
	      do_hibyte(f,"cpx",&p->q2,t);
	    }else{
	      int r=get_reg(f,p,CHAR);
	      emit(f,"\tpha\n");
	      load_hibyte(f,&p->q2,t);
	      emit(f,"\tsta\t%s\n",mregnames[r]);
	      emit(f,"\tpla\n");
	      emit(f,"\tcpx\t%s\n",mregnames[r]);
	    }
	  }else{
	    load_hibyte(f,&p->q1,t);
	    if(c==TEST)
	      emit(f,"\tcmp\t#0\n");
	    else
	      do_hibyte(f,"cmp",&p->q2,t);
	  }
	  if(bc==BEQ)
	    emit(f,"\tbne\t%s%d\n",labprefix,in?in:(in=++label));
	  else if(bc==BNE)
	    emit(f,"\tbne\t%s%d\n",labprefix,bout);
	  else if(bc==BLT||bc==BLE){
	    emit(f,"\tbcc\t%s%d\n",labprefix,bout);
	    emit(f,"\tbne\t%s%d\n",labprefix,in?in:(in=++label));
	  }else if(bc==BGE||bc==BGT){
	    emit(f,"\tbcc\t%s%d\n",labprefix,in?in:(in=++label));
	    emit(f,"\tbne\t%s%d\n",labprefix,bout);
	  }else
	    ierror(0);
	  load_lobyte(f,&p->q1,t);
	  if(c==TEST)
	    emit(f,"\tcmp\t#0\n");
	  else
	    do_lobyte(f,"cmp",&p->q2,t);
	  if(bc==BEQ)
	    emit(f,"\tbeq\t%s%d\n",labprefix,bout);
	  else if(bc==BNE)
	    emit(f,"\tbne\t%s%d\n",labprefix,bout);
	  else if(bc==BLT)
	    emit(f,"\tbcc\t%s%d\n",labprefix,bout);
	  else if(bc==BGE)
	    emit(f,"\tbcs\t%s%d\n",labprefix,bout);	
	  else if(bc==BLE){
	    emit(f,"\tbcc\t%s%d\n",labprefix,bout);
	    emit(f,"\tbeq\t%s%d\n",labprefix,bout);
	  }else if(bc==BGT){
	    emit(f,"\tbcc\t%s%d\n",labprefix,in);
	    emit(f,"\tbne\t%s%d\n",labprefix,bout);
	  }else
	    ierror(0);
	  if(in)
	    emit(f,"%s%d:\n",labprefix,in);
	  if(pacc){
	    reload_acc(f);
	    add_cmplist(bout,branch->typf,pacc);
	  }
	  continue;
	}else{
	  if(bc==BGT||bc==BLE){
	    obj o;
	    if(isacc(q1)){
	      int r;
	      if(pacc=cmp_get_acc(f,p,branch))
		bout=++label;
	      r=get_reg(f,p,CHAR);
	      emit(f,"\tsta\t%s\n",mregnames[r]);
	      load_lobyte(f,&p->q2,t);
	      emit(f,"\tcmp\t%s\n",mregnames[r]);
	      emit(f,"\tstx\t%s\n",mregnames[r]);
	      load_hibyte(f,&p->q2,t);
	      emit(f,"\tsbc\t%s\n",mregnames[r]);
	      emit(f,"\tbvc\t%s%d\n",labprefix,++label);
	      emit(f,"\teor\t#128\n");
	      emit(f,"%s%d:\n",labprefix,label);
	      if(bc==BGT)
		emit(f,"\tbmi\t%s%d\n",labprefix,bout);
	      else
		emit(f,"\tbpl\t%s%d\n",labprefix,bout);
	      if(pacc){
		reload_acc(f);
		add_cmplist(bout,branch->typf,pacc);
	      }
	      continue;
	    }else{
	      o=p->q1;p->q1=p->q2;p->q2=o;
	      if(bc==BGT) bc=BLT; else bc=BGE;
	    }
	  }
	  if(pacc=cmp_get_acc(f,p,branch))
	    bout=++label;
	  if(ISLONG(t)){
	    load_lobyte(f,&p->q1,t);
	    do_lobyte(f,"cmp",&p->q2,t);
	    load_hibyte(f,&p->q1,t);
	    do_hibyte(f,"sbc",&p->q2,t);
	    do_byte3(f,"lda",&p->q1,t);
	    do_byte3(f,"sbc",&p->q2,t);
	    do_byte4(f,"lda",&p->q1,t);
	    do_byte4(f,"sbc",&p->q2,t);
	  }else{
	    load_lobyte(f,&p->q1,t);
	    do_lobyte(f,"cmp",&p->q2,t);
	    load_hibyte(f,&p->q1,t);
	    do_hibyte(f,"sbc",&p->q2,t);
	  }
	  emit(f,"\tbvc\t%s%d\n",labprefix,++label);
	  emit(f,"\teor\t#128\n");
	  emit(f,"%s%d:\n",labprefix,label);
	  if(bc==BLT)
	    emit(f,"\tbmi\t%s%d\n",labprefix,bout);
	  else if(bc==BGE)
	    emit(f,"\tbpl\t%s%d\n",labprefix,bout);
	  else
	    ierror(0);
	  if(pacc){
	    reload_acc(f);
	    add_cmplist(bout,branch->typf,pacc);
	  }
	  continue; 
	}
	ierror(0);
      }


      if((c==ADD||c==SUB)&&ISRIDX(z)&&isconst(q2)){
	eval_const(&p->q2.val,t);
	if(zmeqto(vmax,l2zm(-1L))){ 
	  vmax=Z1; vumax=ZU1; 
	  if(c==ADD) c=SUB; else c=ADD;
	}
	if(zmeqto(vmax,Z1)&&zumeqto(vumax,ZU1)){
	  if(indirect(&p->q1)){
	    get_acc(f,p,CHAR);
	    load_reg(f,p->z.reg,&p->q1,t);
	  }else
	    do_lobyte(f,"ldx",&p->q1,t);
	  emit(f,"\t%s%s\n",(c==ADD)?"in":"de",mregnames[p->z.reg]);
	  continue;
	}
      }

      if((c==LSHIFT||c==RSHIFT)&&isconst(q2)&&
	 (
	 (isreg(q1)&&isreg(z)&&p->q1.reg==p->z.reg&&p->z.reg!=ra&&p->z.reg!=rax)||
	 (!indirect(&p->q1)&&compare_objects(&p->q1,&p->z))
	 )
	 ){
	long l;
	eval_const(&p->q2.val,q2typ(p));
	l=zm2l(vmax);
	/*TODO: allow larger types */
	if((l<3||(iszpage(&p->z)&&l<5))&&(t&NQ)<=LONG){
	  if(c==RSHIFT&&(!c02&&!(t&UNSIGNED)))
	    get_acc(f,p,CHAR);
	  incmem(f,&p->z,t,c,l);
	  continue;
	}
      }

      if(c==LSHIFT||c==RSHIFT){
	long l=-1,m;int loop=0,r=0,r2=0,r3=0,outl=0,same=0;
	if(isconst(q2)){
	  eval_const(&p->q2.val,q2typ(p));
	  l=zm2l(vmax);
	  loop=0;
	}else
	  loop=1;
	if(l>=0&&optsize){
	  if(c==LSHIFT&&(l&7)>6) 
	    loop=1;
	  else if(c==RSHIFT&&(t&UNSIGNED)&&(l&7)>3)
	    loop=1;
	  else if(c==RSHIFT&&!(t&UNSIGNED)&&(l&7)>2)
	    loop=1;
	}

	if(ISLONG(t)){
	  if(!indirect(&p->z)&&
	     (isreg(z)||(p->z.flags&(VAR|DREFOBJ))==VAR)&&
	     (iszpage(&p->z)||(l&7)<=2)&&
	     (!(p->q2.flags&REG)||!(p->z.flags&REG)||p->q2.reg!=p->z.reg)&&
	     (!(p->q2.flags&VAR)||!(p->z.flags&VAR)||p->q2.v!=p->z.v)
	     ){
	    if(isreg(z))
	      strcpy(mregnames[REGDUMMY1],mregnames[p->z.reg]);
	    else if(p->z.v->storage_class==STATIC)
	      sprintf(mregnames[REGDUMMY1],"%s%ld",labprefix,zm2l(p->z.v->offset));
	    else
	      sprintf(mregnames[REGDUMMY1],"%s%s",idprefix,p->z.v->identifier);
	    strcpy(mregnames[REGDUMMY2],mregnames[REGDUMMY1]);
	    strcpy(mregnames[REGDUMMY3],mregnames[REGDUMMY1]);
	    strcat(mregnames[REGDUMMY1],"+1");
	    strcat(mregnames[REGDUMMY2],"+2");
	    if(c!=RSHIFT||(t&UNSIGNED))
	      strcat(mregnames[REGDUMMY3],"+3");
	    if(c==RSHIFT&&!(t&UNSIGNED)){
	      r=REGDUMMY2;r2=REGDUMMY1;r3=REGDUMMY3;
	    }else{
	      r=REGDUMMY1;r2=REGDUMMY2;r3=REGDUMMY3;
	    }
	    if(compare_objects(&p->q1,&p->z)) same=1;
	  }else{
	    r2=get_reg(f,p,CHAR);
	    r3=get_reg(f,p,CHAR);
	  }
	}
	if(!ISCHAR(t)&&r2!=REGDUMMY1&&r2!=REGDUMMY2)
	  r=get_reg(f,p,CHAR);
	if(ISLONG(t)){
	  get_acc(f,p,CHAR);
	  if(l>=24){
	    if(c==LSHIFT){
	      load_lobyte(f,&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r3]);
	      emit(f,"\tlda\t#0\n");
	      emit(f,"\tsta\t%s\n",mregnames[r]);
	      emit(f,"\tsta\t%s\n",mregnames[r2]);
	    }else if(c==RSHIFT&&!(t&UNSIGNED)){
	      do_byte4(f,"lda",&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r3]);
	      sety(f,0);
	      emit(f,"\tcmp\t#0\n");
	      emit(f,"\tbpl\t%s%d\n",labprefix,++label);
	      emit(f,"\tdey\n");
	      emit(f,"%s%d:\n",labprefix,label);
	      emit(f,"\tsty\t%s\n",mregnames[r]);
	      emit(f,"\tsty\t%s\n",mregnames[r2]);
	      emit(f,"\ttya\n");
	      yval=NOVAL;
	    }else{
	      do_byte4(f,"lda",&p->q1,t);
	      sety(f,0);
	      emit(f,"\tsty\t%s\n",mregnames[r3]);
	      emit(f,"\tsty\t%s\n",mregnames[r2]);
	      emit(f,"\tsty\t%s\n",mregnames[r]);
	    }
	  }else if(l>=16){
	    if(c==LSHIFT){
	      load_lobyte(f,&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r2]);
	      load_hibyte(f,&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r3]);
	      emit(f,"\tlda\t#0\n");
	      emit(f,"\tsta\t%s\n",mregnames[r]);
	    }else if(c==RSHIFT&&!(t&UNSIGNED)){
	      do_byte3(f,"lda",&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r3]);
	      do_byte4(f,"lda",&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r2]);
	      sety(f,0);
	      emit(f,"\tcmp\t#0\n");
	      emit(f,"\tbpl\t%s%d\n",labprefix,++label);
	      emit(f,"\tdey\n");
	      emit(f,"%s%d:\n",labprefix,label);
	      emit(f,"\tsty\t%s\n",mregnames[r]);
	      emit(f,"\ttya\n");
	      yval=NOVAL;
	    }else{
	      do_byte4(f,"lda",&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r]);
	      do_byte3(f,"lda",&p->q1,t);
	      sety(f,0);
	      emit(f,"\tsty\t%s\n",mregnames[r2]);
	      emit(f,"\tsty\t%s\n",mregnames[r3]);
	    }
	  }else if(l>=8){
	    if(c==LSHIFT){
	      do_byte3(f,"lda",&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r3]);
	      load_hibyte(f,&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r2]);
	      load_lobyte(f,&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r]);
	      emit(f,"\tlda\t#0\n");
	    }else if(c==RSHIFT&&!(t&UNSIGNED)){
	      load_hibyte(f,&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r3]);
	      do_byte3(f,"lda",&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r2]);
	      do_byte4(f,"lda",&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r]);
	      sety(f,0);
	      emit(f,"\tcmp\t#0\n");
	      emit(f,"\tbpl\t%s%d\n",labprefix,++label);
	      emit(f,"\tdey\n");
	      emit(f,"%s%d:\n",labprefix,label);
	      emit(f,"\ttya\n");
	      yval=NOVAL;
	    }else{
	      if(same){
		load_hibyte(f,&p->q1,t);
		do_byte3(f,"ldy",&p->q1,t);
		yval=NOVAL;
		emit(f,"\tsty\t%s\n",mregnames[r]);
		do_byte4(f,"ldy",&p->q1,t);
		emit(f,"\tsty\t%s\n",mregnames[r2]);
		sety(f,0);
		emit(f,"\tsty\t%s\n",mregnames[r3]);
	      }else{
		emit(f,"\tlda\t#0\n");
		emit(f,"\tsta\t%s\n",mregnames[r3]);
		do_byte4(f,"lda",&p->q1,t);
		emit(f,"\tsta\t%s\n",mregnames[r2]);
		do_byte3(f,"lda",&p->q1,t);
		emit(f,"\tsta\t%s\n",mregnames[r]);
		load_hibyte(f,&p->q1,t);
	      }
	    }
	  }else if(c==RSHIFT&&!(t&UNSIGNED)){
	    if(!same){
	      load_lobyte(f,&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r3]);
	      load_hibyte(f,&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r2]);
	      do_byte3(f,"lda",&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r]);
	    }
	    do_byte4(f,"lda",&p->q1,t);
	  }else{
	    if(!same){
	      do_byte4(f,"lda",&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r3]);
	      do_byte3(f,"lda",&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r2]);
	      load_hibyte(f,&p->q1,t);
	      emit(f,"\tsta\t%s\n",mregnames[r]);
	    }
	    load_lobyte(f,&p->q1,t);
	  }
	}else
	  get_acc(f,p,t);
	if(!ISLONG(t)){
	  if(l>=8){
	    if(!ISSHORT(t)) ierror(0);
	    if(c==LSHIFT){
	      if(indirect(&p->q1)){
		load_lobyte(f,&p->q1,t);
		emit(f,"\ttax\n");
		emit(f,"\tlda\t#0\n");
	      }else{
		if(isacc(q1))
		  emit(f,"\ttax\n");
		else
		  do_lobyte(f,"ldx",&p->q1,t);
		emit(f,"\tlda\t#0\n");
	      }
	    }else{
	      load_hibyte(f,&p->q1,t);
	      emit(f,"\tldx\t#0\n");
	      if(!(t&UNSIGNED)){
		emit(f,"\tcmp\t#0\n");
		emit(f,"\tbpl\t%s%d\n",labprefix,++label);
		emit(f,"\tdex\n");
		emit(f,"%s%d:\n",labprefix,label);
	      }
	    }
	  }else
	    load_acc(f,&p->q1,t);
	}
	if(l>=0) l&=7;
	m=l;
	if(ISSHORT(t)&&(l>0||loop))
	  emit(f,"\tstx\t%s\n",mregnames[r]);
	if(loop){
	  if(l>=0)
	    sety(f,l);
	  else{
	    if(indirect(&p->q2)){
	      emit(f,"\tpha\n");
	      load_lobyte(f,&p->q2,q2typ(p));
	      emit(f,"\ttay\n");
	      emit(f,"\tpla\n");
	      emit(f,"\tcpy\t#0\n");
	    }else{
	      emit(f,"\tldy\t");
	      emit_lobyte(f,&p->q2,q2typ(p));
	      emit(f,"\n");
	    }
	    outl=++label;
	    emit(f,"\tbeq\t%s%d\n",labprefix,outl);
	  }
	  emit(f,"%s%d:\n",labprefix,++label);
	}else{
	  if(ISCHAR(t))
	    l&=7;
	  else if(ISSHORT(t))
	    l&=15;
	  else
	    l&=31;
	}
	while(l>0||loop){
	  if(c==LSHIFT){
	    emit(f,"\tasl\n");
	    if(!ISCHAR(t))
	      emit(f,"\trol\t%s\n",mregnames[r]);
	    if(ISLONG(t)){
	      emit(f,"\trol\t%s\n",mregnames[r2]);
	      emit(f,"\trol\t%s\n",mregnames[r3]);
	    }
	  }else if(t&UNSIGNED){
	    emit(f,"\tlsr");
	    if(ISLONG(t)){
	      emit(f,"\t%s\n",mregnames[r3]);
	      emit(f,"\tror\t%s\n",mregnames[r2]);
	      emit(f,"\tror");
	    }
	    if(!ISCHAR(t)){
	      emit(f,"\t%s\n",mregnames[r]);
	      emit(f,"\tror");
	    }
	    emit(f,"\n");
	  }else{
	    if(ISLONG(t)){
	      if(ce02)
		emit(f,"\tasr\n");
	      else{
		emit(f,"\tcmp\t#128\n");
		emit(f,"\tror\n");
	      }
	      emit(f,"\tror\t%s\n",mregnames[r]);
	      emit(f,"\tror\t%s\n",mregnames[r2]);
	      emit(f,"\tror\t%s\n",mregnames[r3]);
	    }else{
	      if(!ISCHAR(t)){
		emit(f,"\tcpx\t#128\n");
		emit(f,"\tror\t%s\n",mregnames[r]);
	      }else
		emit(f,"\tcmp\t#128\n");
	      emit(f,"\tror\n");
	    }
	  }
	  if(loop){
	    emit(f,"\tdey\n");
	    emit(f,"\tbne\t%s%d\n",labprefix,label);
	    if(outl) emit(f,"%s%d:\n",labprefix,outl);
	    yval=0;
	    break;
	  }
	  l--;
	}
	if(ISLONG(t)){
	  if(c==RSHIFT&&!(t&UNSIGNED)){
	    do_byte4(f,"sta",&p->z,t);
	    if(r!=REGDUMMY2){
	      emit(f,"\tlda\t%s\n",mregnames[r]);
	      do_byte3(f,"sta",&p->z,t);
	      emit(f,"\tlda\t%s\n",mregnames[r2]);
	      store_hibyte(f,&p->z,t);
	      emit(f,"\tlda\t%s\n",mregnames[r3]);
	      store_lobyte(f,&p->z,t);
	    }
	  }else{
	    store_lobyte(f,&p->z,t);
	    if(r!=REGDUMMY1){
	      emit(f,"\tlda\t%s\n",mregnames[r]);
	      store_hibyte(f,&p->z,t);
	      emit(f,"\tlda\t%s\n",mregnames[r2]);
	      do_byte3(f,"sta",&p->z,t);
	      emit(f,"\tlda\t%s\n",mregnames[r3]);
	      do_byte4(f,"sta",&p->z,t);
	    }
	  }
	}else{
	  if(!ISCHAR(t)&&(m>0||loop))
	    emit(f,"\tldx\t%s\n",mregnames[r]);
	  if(ISCHAR(t)||indirect(&p->z))
	    store_acc(f,&p->z,t);
	  else{
	    store_lobyte(f,&p->z,t);
	    if(!isreg(z)||p->z.reg!=rax){
	      emit(f,"\tstx\t");
	      emit_hibyte(f,&p->z,t);
	      emit(f,"\n");
	    }
	  }
	}
	continue;
      }

      if((c>=OR&&c<=AND)||(c>=LSHIFT&&c<=MOD)||c==ADDI2P||c==SUBIFP){
	char *s;int t2=t,pt=p->typf2;
	if(!isacc(z)){
	  /* TODO: check other operations */
	  if((c==ADD||c==SUB||c==AND||c==XOR||c==OR||c==ADDI2P||c==SUBIFP)&&isacc(q1)&&scratch(p->next,ra,1))
	    ;
	  else{
	    if((c==ADDI2P||c==SUBIFP)&&(p->typf2&NU)==CHAR)
	      get_acc(f,p,INT);
	    else
	      get_acc(f,p,CHAR);
	  }
	}
	if(c==ADDI2P||c==SUBIFP){
	  if(c==ADDI2P) c=ADD; else c=SUB;
	  t=UNSIGNED|INT;
	  if((pt&NQ)==POINTER&&(p->q1.flags&(KONST|DREFOBJ))==KONST){
	    eval_const(&p->q1.val,POINTER);
	    insert_const(&p->q1.val,UNSIGNED|INT);
	  }
	}
	if(c>=OR&&c<=AND)
	  s=logicals[c-OR];
	else
	  s=arithmetics[c-LSHIFT];
      
	if(ISFLOAT(t)){
	  if(!ieee) ierror(0);
	  t&=NQ;
	  if(regs[LAST_PAIR]) ierror(0);
	  get_acc(f,p,INT);
	  regs[LAST_PAIR]=1;
	  load_address(f,LAST_PAIR,&p->q1,t);
	  BSET(regused,t3);
	  BSET(regused,t4);
	  emit(f,"\tjsr\t%s__fload%c\n",idprefix,(t==FLOAT?'s':'d'));
	  yval=NOVAL;
	  load_address(f,LAST_PAIR,&p->q2,t);
	  emit(f,"\tjsr\t%s__f%s%c\n",idprefix,ename[c],(t==FLOAT?'s':'d'));
	  yval=NOVAL;
	  load_address(f,LAST_PAIR,&p->z,t);
	  emit(f,"\tjsr\t%s__fstore%c\n",idprefix,(t==FLOAT?'s':'d'));
	  yval=NOVAL;
	  regs[LAST_PAIR]=0;
	  continue;
	}else if(ISLONG(t)){
	  long l;int cnst=0;
	  if(c==ADD) emit(f,"\tclc\n");
	  if(c==SUB) emit(f,"\tsec\n");
	  if((p->q2.flags&(KONST|DREFOBJ))==KONST){
	    eval_const(&p->q2.val,t);
	    l=zm2l(vmax);
	    cnst=1;
	  }
	  if(cnst&&c==AND&&(l&0xff)==0) emit(f,"\tlda\t#0\n");
	  else if(cnst&&c==OR&&(l&0xff)==0xff) emit(f,"\tlda\t#255\n");
	  else{
	    load_lobyte(f,&p->q1,t);
	    if(!(cnst&&((c==AND&&(l&0xff)==0xff)||(c==OR&&(l&0xff)==0)||(c==XOR&&(l&0xff)==0)))) do_lobyte(f,s,&p->q2,t);
	  }
	  store_lobyte(f,&p->z,t);
	  if(cnst&&c==AND&&(l&0xff00)==0) emit(f,"\tlda\t#0\n");
	  else if(cnst&&c==OR&&(l&0xff00)==0xff00) emit(f,"\tlda\t#255\n");
	  else{
	    load_hibyte(f,&p->q1,t);
	    if(!(cnst&&((c==AND&&(l&0xff00)==0xff00)||(c==OR&&(l&0xff00)==0)||(c==XOR&&(l&0xff00)==0)))) do_hibyte(f,s,&p->q2,t);
	  }
	  store_hibyte(f,&p->z,t);
	  if(cnst&&c==AND&&(l&0xff0000)==0) emit(f,"\tlda\t#0\n");
	  else if(cnst&&c==OR&&(l&0xff0000)==0xff0000) emit(f,"\tlda\t#255\n");
	  else{
	    do_byte3(f,"lda",&p->q1,t);
	    if(!(cnst&&((c==AND&&(l&0xff0000)==0xff0000)||(c==OR&&(l&0xff0000)==0)||(c==XOR&&(l&0xff0000)==0)))) do_byte3(f,s,&p->q2,t);
	  }
	  do_byte3(f,"sta",&p->z,t);
	  if(cnst&&c==AND&&(l&0xff000000)==0) emit(f,"\tlda\t#0\n");
	  else if(cnst&&c==OR&&(l&0xff000000)==0xff000000) emit(f,"\tlda\t#255\n");
	  else{
	    do_byte4(f,"lda",&p->q1,t);
	    if(!(cnst&&((c==AND&&(l&0xff000000)==0xff000000)||(c==OR&&(l&0xff000000)==0)||(c==XOR&&(l&0xff000000)==0)))) do_byte4(f,s,&p->q2,t);
	  }
	  do_byte4(f,"sta",&p->z,t);
	  continue;
	}else if(ISCHAR(t)){
	  load_acc(f,&p->q1,t);
	  if(c02&&(c==ADD||c==SUB)&&(p->q2.flags&(KONST|DREFOBJ))==KONST){
	    eval_const(&p->q2.val,t);
	    if(zmeqto(vmax,Z1)||zmeqto(vmax,l2zm(2L))){
	      if(zmeqto(vmax,l2zm(2L)))
		emit(f,"\t%s\n",c==ADD?"ina":"dea");
	      emit(f,"\t%s\n",c==ADD?"ina":"dea");
	      store_acc(f,&p->z,t);
	      continue;
	    }
	  }
	  if(c==ADD) emit(f,"\tclc\n");
	  if(c==SUB) emit(f,"\tsec\n");
	  if(isreg(q2)&&ISIDX(p->q2.reg)){
	    int r=get_reg(f,p,CHAR);
	    emit(f,"\tst%s\t%s\n",mregnames[p->q2.reg],mregnames[r]);
	    p->q2.flags=REG;
	    p->q2.reg=r;
	  }
	  do_lobyte(f,s,&p->q2,t);
	  store_acc(f,&p->z,t);
	}else if(c==ADD||c==SUB){
	  int a,r;long l=1;
	  if(isconst(q2)){
	    eval_const(&p->q2.val,t2);
	    l=zm2l(vmax);
	    if(isacc(z)&&(l&0xffff)<=768){
	      load_acc(f,&p->q1,t);
	      if(c==ADD){
		if(l&0xff)
		  emit(f,"\tclc\n\tadc\t#%d\n",(int)(l&255));
		l&=0xffff;
		if(l==256){emit(f,"\tinx\n");continue;}
		if(l==512){emit(f,"\tinx\n\tinx\n");continue;}
		if(l==768){emit(f,"\tinx\n\tinx\n\tinx\n");continue;}
		if(l<256){++label;emit(f,"\tbcc\t%s%d\n\tinx\n%s%d:\n",labprefix,label,labprefix,label);continue;}
		if(l<512){++label;emit(f,"\tinx\n\tbcc\t%s%d\n\tinx\n%s%d:\n",labprefix,label,labprefix,label);continue;}
		if(l<768){++label;emit(f,"\tinx\n\tinx\n\tbcc\t%s%d\n\tinx\n%s%d:\n",labprefix,label,labprefix,label);continue;}
	      }else{
		if(l&0xff)
		  emit(f,"\tsec\n\tsbc\t#%d\n",(int)(l&255));
		l&=0xffff;
		if(l==256){emit(f,"\tdex\n");continue;}
		if(l==512){emit(f,"\tdex\n\tdex\n");continue;}
		if(l==768){emit(f,"\tdex\n\tdex\n\tdex\n");continue;}
		if(l<256){++label;emit(f,"\tbcs\t%s%d\n\tdex\n%s%d:\n",labprefix,label,labprefix,label);continue;}
		if(l<512){++label;emit(f,"\tdex\n\tbcs\t%s%d\n\tdex\n%s%d:\n",labprefix,label,labprefix,label);continue;}
		if(l<768){++label;emit(f,"\tdex\n\tdex\n\tbcs\t%s%d\n\tdex\n%s%d:\n",labprefix,label,labprefix,label);continue;}
	      }
	    }
	    l&=0xff00;
	  }
	  if(isreg(z)&&p->z.reg==rax) a=1; else a=0;
	  if((t2&NU)==CHAR&&(p->q2.flags&(KONST|DREFOBJ))!=KONST){
	    get_acc(f,p,INT);
	    emit(f,"\tldx\t#0\n");
	    load_lobyte(f,&p->q2,t);
	    emit(f,"\tbpl\t%s%d\n",labprefix,++label);
	    emit(f,"\tdex\n");
	    emit(f,"%s%d:\n",labprefix,label);
	    if(c==ADD){
	      if(c==ADD) emit(f,"\tclc\n"); else emit(f,"\tsec\n");
	      do_lobyte(f,s,&p->q1,t);
	      if(isacc(z))
		emit(f,"\tpha\n");
	      else
		store_lobyte(f,&p->z,t);
	      emit(f,"\ttxa\n");
	      do_hibyte(f,s,&p->q1,t);
	      store_hibyte(f,&p->z,t);
	      if(ISFPOINTER(pt)&&!compare_objects(&p->q1,&p->z)){
		do_byte3(f,"lda",&p->q1,pt);
		do_byte3(f,"sta",&p->z,pt);
	      }
	      if(isacc(z))
		emit(f,"\tpla\n");
	      continue;
	    }
	    r=get_reg(f,p,CHAR);
	    emit(f,"\tstx\t%s\n",mregnames[r]);
	  }
	  load_lobyte(f,&p->q1,t);
	  if(c==ADD) emit(f,"\tclc\n"); else emit(f,"\tsec\n");
	  do_lobyte(f,s,&p->q2,t2);
	  store_lobyte(f,&p->z,t);
	  if(l==0&&isreg(q1)&&isreg(z)&&p->q1.reg==p->z.reg){
	    if(c==ADD){
	      emit(f,"\tbcc\t%s%d\n",labprefix,++label);
	      if(a)
		emit(f,"\tinx\n");
	      else{
		/*if(!reg_pair(p->z.reg,&rp)) ierror(0);*/
		emit(f,"\tinc\t%s+1\n",mregnames[p->z.reg]);
	      }
	    }else{
	      emit(f,"\tbcs\t%s%d\n",labprefix,++label);
	      if(a)
		emit(f,"\tdex\n");
	      else{
		if(!reg_pair(p->z.reg,&rp)) ierror(0);
		emit(f,"\tdec\t%s\n",mregnames[rp.r2]);
	      }
	    }
	    emit(f,"%s%d:\n",labprefix,label);
	  }else{
	    if(a==1) emit(f,"\tpha\n");
	    if((t2&NQ)==CHAR){
	      if(t2&UNSIGNED){
		load_hibyte(f,&p->q1,t);
		emit(f,"\t%s\t#0\n",s);
	      }else{
		load_hibyte(f,&p->q1,t);
		if((p->q2.flags&(KONST|DREFOBJ))==KONST){
		  eval_const(&p->q2.val,t2);
		  if(zmleq(Z0,vmax))
		    emit(f,"\t%s\t#0\n",s);
		  else
		    emit(f,"\t%s\t#255\n",s);
		}else{
		  emit(f,"\t%s\t%s\n",s,mregnames[r]);
		}
	      }
	    }else{
	      load_hibyte(f,&p->q1,t);
	      do_hibyte(f,s,&p->q2,t2);
	    }
	    store_hibyte(f,&p->z,t);
	    if(a==1) emit(f,"\tpla\n");
	    if(ISFPOINTER(pt)&&p->code!=SUBPFP){
	      if(!compare_objects(&p->q1,&p->z)){
		do_byte3(f,"lda",&p->q1,FPOINTER);
		do_byte3(f,"sta",&p->z,FPOINTER);
	      }
	    }
	  }
	}else{
	  long l=-1;int dello=0;
	  if(c!=AND&&c!=OR&&c!=XOR) ierror(0);
	  if((p->q2.flags&(KONST|DREFOBJ))==KONST){
	    eval_const(&p->q2.val,t);
	    l=zm2l(vmax)&0xffff;
	  }
	  if(l>0&&((c==AND&&(l&0xFF)==0)||(c==OR&&(l&0xFF)==0xFF))){
	    dello=1;
	  }else if(l>0&&((c==AND&&(l&0xFF)==0xFF)||((c==OR||c==XOR)&&(l&0xFF)==0))){
	    if(!compare_objects(&p->q1,&p->z)){
	      load_lobyte(f,&p->q1,t);
	      store_lobyte(f,&p->z,t);
	    }
	  }else{
	    load_lobyte(f,&p->q1,t);
	    do_lobyte(f,s,&p->q2,t);
	    store_lobyte(f,&p->z,t);
	  }
	  if(l>0&&((c==AND&&(l&0xFF00)==0)||(c==OR&&(l&0xFF00)==0xFF00))){
	    int val=(c==AND)?0:255;
	    if(isacc(z)){
	      emit(f,"\tldx\t#%d\n",val);
	    }else{
	      emit(f,"\tlda\t#%d\n",val);
	      store_hibyte(f,&p->z,t);
	    }
	  }else if(l>0&&((c==AND&&(l&0xFF00)==0xFF00)||((c==OR||c==XOR)&&(l&0xFF00)==0))){
	    if(isacc(z)&&!indirect(&p->q1)){
	      do_hibyte(f,"ldx",&p->q1,t);
	    }else{
	      if(!compare_objects(&p->q1,&p->z)){
		if(!dello&&isacc(z))
		  emit(f,"\tpha\n");
		load_hibyte(f,&p->q1,t);
		store_hibyte(f,&p->z,t);
		if(!dello&&isacc(z))
		  emit(f,"\tpla\n");
	      }
	    }
	  }else{
	    if(!dello&&isacc(z))
	      emit(f,"\tpha\n");
	    load_hibyte(f,&p->q1,t);
	    do_hibyte(f,s,&p->q2,t);
	    store_hibyte(f,&p->z,t);
	    if(!dello&&isacc(z))
	      emit(f,"\tpla\n");
	  }
	  if(dello){
	    emit(f,"\tlda\t#%d\n",(c==AND)?0:255);
	    store_lobyte(f,&p->z,t);
	  }
	}
	continue;
      }
      pric2(stdout,p);
      ierror(0);
    }

    function_bottom(f,v,localsize);
    
    for(c=1;c<=MAXR;c++){
      if(regsa[c]||regused[c]){
	BSET(regs_modified,c);
      }
    }

    if(stack_valid){
      if(!v->fi) v->fi=new_fi();
      v->fi->flags|=ALL_STACK;
      v->fi->stack1=stack;
    }
  }

  free_IC(mi);

  emit(f,"; stacksize=%lu%s\n",zum2ul(stack),stack_valid?"":"+??");
}

int shortcut(int code,int typ)
{
  if(code==COMPARE||code==MULT||code==ADD||code==SUB||code==AND||code==OR||code==XOR||code==LSHIFT||code==RSHIFT||code==MINUS||code==KOMPLEMENT||code==NEGATION)
    return 1;

  return 0;
}

static int fattr(type *p,char *s)
{
  if(p->attr&&strstr(p->attr,s))
    return 1;
  if(p->next)
    return fattr(p->next,s);
  else
    return 0;
}

int reg_parm(struct reg_handle *m, struct Typ *t,int vararg,struct Typ *d)
{
  int f;

  if(vararg)
    return 0;
  f=t->flags&NQ;
  if(OLDFP&&ISFLOAT(f)) return 0;
  if(d&&fattr(d,"__stackparms__"))
    return 0;
  if(d&&fattr(d,"__cc65__")){
    m->regs++;
    printf("arg=%d cnt=%d\n",m->regs,d->exact->count);
    if(m->regs==d->exact->count-1){
      if(ISCHAR(t->flags))
	return ra;
      if(ISSHORT(t->flags))
	return rax;
    }
    return 0;
  }
  if(ISCHAR(f)){
    if(!t->exact){
      if(m->regs>=GPR_ARGS-1)
	return 0;
      f=FIRST_GPR+m->regs;
      m->regs+=2;
      return f;
    }else{
      if(m->regs>=GPR_ARGS)
	return 0;
      else
	return FIRST_GPR+m->regs++;
    }
  }
  if(ISSHORT(f)||f==POINTER){
    if(m->regs>=GPR_ARGS-1)
      return 0;
    else{
      if(m->regs&1) m->regs+=1;
      m->regs+=2;
      return FIRST_PAIR+m->regs/2-1;
    }
  }
  if(f==FPOINTER||f==LONG||f==FLOAT||(!ieee&&(f==DOUBLE||f==LDOUBLE))){
    if(m->bregs>=4)
      return 0;
    else
      return FIRST_BIG+m->bregs++;
  }
  if(f==LLONG||(ieee&&(f==DOUBLE||f==LDOUBLE))){
    if(m->bregs>=3)
      return 0;
    else{
      if(m->bregs&1)  m->bregs++;
      m->bregs+=2;
      return FIRST_BIGP+m->bregs/2-1;
    }
  }
  return 0;
}

int handle_pragma(const char *s)
{
  static char sec[SECLEN];
  int i;
  if(sscanf(s,"section %127s",sec)==1){
    if(!strcmp(sec,"default"))
      use_sec=0;
    else
      use_sec=sec;
    return 1;
  }
  if(sscanf(s,"bank %d",&i)==1){
    use_bank=i;
    return 1;
  }
}
void cleanup_cg(FILE *f)
{
  int i;
  struct fpconstlist *p=firstfpc;

  if(f&&p){
    emit(f,rodataname);emit(f,"\n");
    section=RODATA;
  }
  while(p=firstfpc){
    emit(f,"%s%d:\n\tword\t",labprefix,p->label);
    if(ieee)
      emit_ieee(f,&p->val,p->t);
    else{
      int words=zm2l(sizetab[p->t&NQ])/2;
      eval_const(&p->val,p->t);
      if(ISFLOAT(p->t)) cnv_fp();
      for(i=0;i<words;i++){
	emit(f,"%ld",zm2l(vmax)&0xffff);
	if(i<words-1){emit(f,",");vmax=zmrshift(vmax,l2zm(16L));}
      }
      emit(f,"\n");
      /*emit(f,"%ld,%ld\n",zm2l(vmax)&0xffff,zm2l(zmrshift(vmax,l2zm(16L)))&0xffff);*/
    }
    firstfpc=p->next;
    free(p);
  }

  emit(f,"\tzpage\t%s\n",mregnames[sp]);
  for(i=FIRST_GPR;i<=LAST_GPR;i++)
    emit(f,"\tzpage\t%s\n",mregnames[i]);
  for(i=FIRST_BIG;i<=LAST_BIG;i++)
    emit(f,"\tzpage\t%s\n",mregnames[i]);

}
void cleanup_db(FILE *f)
{
  if(f) section=-1;
}

static char *zops[]={
  "adc","and","asl","bit","eor","lda","ora",
  "tax","txa","tay","tya","sbc"};

static int setszflag(char *op)
{
  int i;
  for(i=0;i<sizeof(zops)/sizeof(zops[0]);i++)
    if(!strcmp(op,zops[i]))
      return 1;
  return 0;
}

static char *zxops[]={
  "tax","txa","ldx","inx","dex"};

static int setszxflag(char *op)
{
  int i;
  for(i=0;i<sizeof(zxops)/sizeof(zxops[0]);i++)
    if(!strcmp(op,zxops[i]))
      return 1;
  return 0;
}

enum peepf { NEEDSAME = 1, REMOVE1ST = 2};
struct peeps {char *s1,*s2,*r;enum peepf flags;};



int emit_peephole(void)
{
  int entries,i,j;
  char *asmline[EMIT_BUF_DEPTH];
  char buf1[1024],buf2[1024];
  char op1[8],op2[8];
  static char ca[1024],cx[1024],cy[1024],cz[1024];
  static int rm,disabled;

  static struct peeps elim[]={
    "lda","sta",0,NEEDSAME,
    "ldx","stx",0,NEEDSAME,
    "ldy","sty",0,NEEDSAME,
    "ldz","stz",0,NEEDSAME,
    "ldq","stq",0,NEEDSAME,
    "sta","sta",0,NEEDSAME,
    "stx","stx",0,NEEDSAME,
    "sty","sty",0,NEEDSAME,
    "stz","stz",0,NEEDSAME,
    "stq","stq",0,NEEDSAME,
    "sta","lda",0,NEEDSAME,
    "stx","ldx",0,NEEDSAME,
    "sty","ldy",0,NEEDSAME,
    "stz","ldz",0,NEEDSAME,
    "stq","ldq",0,NEEDSAME,
    "txa","tax",0,0,
    "tax","txa",0,0,
    "tay","tya",0,0,
    "tya","tay",0,0,
    "tza","taz",0,0,
    "taz","tza",0,0,
    "lda","lda",0,REMOVE1ST,
    "ldx","ldx",0,REMOVE1ST,
    "ldy","ldy",0,REMOVE1ST,
    "ldz","ldz",0,REMOVE1ST,
    "ldq","ldq",0,REMOVE1ST,
    "lda","ldq",0,REMOVE1ST,
    "ldx","ldq",0,REMOVE1ST,
    "ldy","ldq",0,REMOVE1ST,
    "lda","pla",0,REMOVE1ST,
    "ldx","plx",0,REMOVE1ST,
    "ldy","ply",0,REMOVE1ST,
    "ldz","plz",0,REMOVE1ST,
    "lda","txa",0,REMOVE1ST,
    "lda","tya",0,REMOVE1ST,
    "lda","tza",0,REMOVE1ST,
    "ldx","tax",0,REMOVE1ST,
    "ldy","tay",0,REMOVE1ST,
    "ldz","taz",0,REMOVE1ST,
    "tay","ldy",0,REMOVE1ST,
    "tax","ldx",0,REMOVE1ST,
    "taz","ldz",0,REMOVE1ST,
    "txa","lda",0,REMOVE1ST,
    "tya","lda",0,REMOVE1ST,
    "tza","lda",0,REMOVE1ST,
    "lda","ldx","\ttax\n",NEEDSAME,
    "lda","ldy","\ttay\n",NEEDSAME,
    "lda","ldz","\ttaz\n",NEEDSAME,
    "ldx","lda","\ttxa\n",NEEDSAME,
    "ldy","lda","\ttya\n",NEEDSAME,
    "ldz","lda","\ttza\n",NEEDSAME,
    "sta","ldx","\ttax\n",NEEDSAME,
    "sta","ldy","\ttay\n",NEEDSAME,
    "sta","ldz","\ttaz\n",NEEDSAME,
    "stx","lda","\ttxa\n",NEEDSAME,
    "sty","lda","\ttya\n",NEEDSAME,
    "stz","lda","\ttza\n",NEEDSAME, /* must be last */
  };

  if(nopeep) return 0;

  /* activate optimization that is not valid for c02 */
  if(!ce02) elim[sizeof(elim)/sizeof(elim[0])-1].r="\tlda\t#0\n";

  i=emit_l;
  if(emit_f==0)
    entries=i-emit_f+1;
  else
    entries=EMIT_BUF_DEPTH;
  asmline[0]=emit_buffer[i];

  if(!strcmp(asmline[0],";startinline\n")) disabled=1;
  if(!strcmp(asmline[0],";endinline\n")) disabled=0;
  if(disabled) return 0;

  buf1[0]=0;op1[0]=0;
  if((j=sscanf(asmline[0]," %6s %999s",op1,buf1))>=1){
    /*printf("a=%s x=%s y=%s z=%s\n",ca,cx,cy,cz);
      printf("\t\t%s %s\n",op1,buf1);*/
    if(!strcmp(op1,"lda")){
      if(buf1[0]=='#'){
	if(!rm&&!strcmp(buf1,ca)){remove_asm();return rm=1;}
	if(!rm&&!strcmp(buf1,cx)){strcpy(asmline[0],"\ttxa\n");return rm=1;}
	if(!rm&&!strcmp(buf1,cy)){strcpy(asmline[0],"\ttya\n");return rm=1;}
	if(!rm&&!strcmp(buf1,cz)){strcpy(asmline[0],"\ttza\n");return rm=1;}
	strcpy(ca,buf1);
      }else ca[0]=0;
    }else if(!strcmp(op1,"ldx")){
      if(buf1[0]=='#'){
	if(!rm&&!strcmp(buf1,cx)){remove_asm();return rm=1;}
	if(!rm&&!strcmp(buf1,ca)){strcpy(asmline[0],"\ttax\n");return rm=1;}
	strcpy(cx,buf1);
      }else cx[0]=0;
    }else if(!strcmp(op1,"ldy")){
      if(buf1[0]=='#'){
	if(!rm&&!strcmp(buf1,cy)){remove_asm();return rm=1;}
	if(!rm&&!strcmp(buf1,ca)){strcpy(asmline[0],"\ttay\n");return rm=1;}
	strcpy(cy,buf1);
      }else cy[0]=0;
    }else if(!strcmp(op1,"ldz")){
      if(buf1[0]=='#'){
	if(!rm&&!strcmp(buf1,cz)){remove_asm();return rm=1;}
	if(!rm&&!strcmp(buf1,ca)){strcpy(asmline[0],"\ttaz\n");return rm=1;}
	strcpy(cz,buf1);
      }else cz[0]=0;
    }else{
      static char clobbernone[]="asw bit clc cld cli clv cmp cpx cpy dec deq dew inc inq inw nop pha php phw phz plp sec sed sei sta stq stx sty";
      static char clobbera[]="adc and asl asr eor lsr ora pla rol ror sbc txa tya tza";
      static char clobberx[]="dex inx tax tsx";
      static char clobbery[]="dey iny tay";
      static char clobberz[]="dez inz taz";
      if(strstr(clobbernone,op1)){
      }else if(strstr(clobbera,op1))
	ca[0]=0;
      else if(strstr(clobberx,op1))
	cx[0]=0;
      else if(strstr(clobbery,op1))
	cy[0]=0;
      else if(strstr(clobberz,op1))
	cz[0]=0;
      else
	ca[0]=cx[0]=cy[0]=cz[0]=0;
    }
  }else{
    ca[0]=cx[0]=cy[0]=cz[0]=0;
  }

  rm=0;

  if(sscanf(asmline[0]," %6s %999s",op1,buf1)==2&&!strcmp(op1,"and")&&!strcmp(buf1,"#0")){
    strcpy(asmline[0],"\tlda\t#0\n");
    return rm=1;
  }

  if(entries>=2){
    i--;
    if(i<0) i=EMIT_BUF_DEPTH-1;
    asmline[1]=emit_buffer[i];


    if(!strcmp(asmline[0],"; volatile barrier\n")&&!strcmp(asmline[0],asmline[1])){
      remove_asm();
      return rm=1;
    }

    if(sscanf(asmline[0]," %6s",op1)==1&&!strcmp(op1,"rts")&&
       sscanf(asmline[1]," %6s %999s",op2,buf2)==2&&!strcmp(op2,"jsr")){
      sprintf(asmline[1],"\tjmp\t%s\n",buf2);
      remove_asm();
      return rm=1;
    }

    for(j=0;j<sizeof(elim)/sizeof(elim[0]);j++){
      if(elim[j].flags&NEEDSAME){
	if(sscanf(asmline[0]," %6s %999s",op2,buf2)==2&&
	   sscanf(asmline[1]," %6s %999s",op1,buf1)==2&&
	   !strcmp(op1,elim[j].s1)&&!strcmp(op2,elim[j].s2)&&
	   !strcmp(buf1,buf2)){
	  if(elim[j].r){
	    strcpy(asmline[0],elim[j].r);
	  }else{
	    if(elim[j].flags&REMOVE1ST)
	      strcpy(asmline[1],asmline[0]);
	    remove_asm();
	  }
	  return rm=1;
	}
      }else{
	if(sscanf(asmline[1]," %6s",op1)==1&&
	   sscanf(asmline[0]," %6s",op2)==1&&
	   !strcmp(op1,elim[j].s1)&&!strcmp(op2,elim[j].s2)){
	  if(elim[j].flags&REMOVE1ST)
	    strcpy(asmline[1],asmline[0]);
	  remove_asm();
	  return rm=1;
	}
      }
    }


  }

  if(entries>=3){
    i--;
    if(i<0) i=EMIT_BUF_DEPTH-1;
    asmline[2]=emit_buffer[i];
    if(sscanf(asmline[0]," %6s %999s",op1,buf1)==2){
#if 0
      if(!strcmp(op1,"lda")&&buf1[0]=='#'){
	if(sscanf(asmline[1]," %6s %999s",op2,buf2)==2&&
	   !strcmp(op2,"sta")){
	  if(sscanf(asmline[2]," %6s %999s",op2,buf2)==2&&
	     !strcmp(op2,"lda")&&!strcmp(buf1,buf2)){
	    remove_asm();
	    return rm=1;
	  }
	}
      }
#endif
      if(!strcmp(op1,"beq")||!strcmp(op1,"bne")){
	if(sscanf(asmline[1]," %6s %999s",op2,buf2)==2&&
	   !strcmp(op2,"cmp")&&!strcmp(buf2,"#0")){
	  if(sscanf(asmline[2]," %6s",op2)==1&&
	     setszflag(op2)){
	    strcpy(asmline[1],asmline[0]);
	    remove_asm();
	    return rm=1;
	  }
	}
      }
      if(!strcmp(op1,"beq")||!strcmp(op1,"bne")){
	if(sscanf(asmline[1]," %6s %999s",op2,buf2)==2&&
	   !strcmp(op2,"cpx")&&!strcmp(buf2,"#0")){
	  if(sscanf(asmline[2]," %6s",op2)==1&&
	     setszxflag(op2)){
	    strcpy(asmline[1],asmline[0]);
	    remove_asm();
	    return rm=1;
	  }
	}
      }
    }
  }
  if(entries>=4){
    i--;
    if(i<0) i=EMIT_BUF_DEPTH-1;
    asmline[3]=emit_buffer[i];
  }
  if(entries>=5){
    i--;
    if(i<0) i=EMIT_BUF_DEPTH-1;
    asmline[4]=emit_buffer[i];
    if(sscanf(asmline[0]," %s %s",op1,buf1)>=1){
      if(!strcmp(op1,"lda")||!strcmp(op1,"pla")||!strcmp(op1,"txa")||!strcmp(op1,"tya")){
	if(sscanf(asmline[1]," %s %s",op1,buf1)>=1&&!strcmp(op1,"pla")&&
	   sscanf(asmline[2]," %s %s",op1,buf1)>=1&&!strcmp(op1,"tay")&&
	   sscanf(asmline[3]," %s %s",op1,buf1)>=1&&!strcmp(op1,"txa")&&
	   sscanf(asmline[4]," %s %s",op1,buf1)>=1&&!strcmp(op1,"pha")){
	  strcpy(asmline[4],asmline[3]);
	  strcpy(asmline[3],asmline[2]);
	  strcpy(asmline[2],asmline[0]);
	  remove_asm();
	  remove_asm();
	  return rm=1;
	}
      }
    }
  }
  return 0;
}

/* Return name of library function, if this node should be
   implemented via libcall. */
char *use_libcall(int c,int t,int t2)
{
  static char fname[16];
  char *ret=0;

  if(c==COMPARE){
    if((t&NQ)==LLONG||(ISFLOAT(t)&&!ieee)){
      sprintf(fname,"__cmp%s%s%ld",(t&UNSIGNED)?"u":"s",ISFLOAT(t)?"flt":"int",zm2l(sizetab[t&NQ])*8);
      ret=fname;
    }
  }else{
    t&=NU;
    t2&=NU;
    if(ISSHORT(t)&&c!=MULT&&c!=DIV&&c!=MOD&&!ISFLOAT(t2))
      return 0;
    if(ISLONG(t)&&c!=MULT&&c!=DIV&&c!=MOD&&!ISFLOAT(t2))
      return 0;

    if(!ieee&&ISFLOAT(t)) t=FLOAT;
    if(t==LDOUBLE) t=DOUBLE;
    if(t2==LDOUBLE) t2=DOUBLE;
    if(!ieee&&ISFLOAT(t2)) t2=FLOAT;
    if(c==CONVERT){
      if(t==t2) return 0;
      if(t==FLOAT&&t2==DOUBLE) return "__flt64toflt32";
      if(t==DOUBLE&&t2==FLOAT) return "__flt32toflt64";

      if(ISFLOAT(t)){
        sprintf(fname,"__%cint%ldtoflt%d",(t2&UNSIGNED)?'u':'s',zm2l(sizetab[t2&NQ])*8,(t==FLOAT)?32:64);
        ret=fname;
      }
      if(ISFLOAT(t2)){
        sprintf(fname,"__flt%dto%cint%ld",((t2&NU)==FLOAT)?32:64,(t&UNSIGNED)?'u':'s',zm2l(sizetab[t&NQ])*8);
        ret=fname;
      }
    }
    if(c==MULT&&(t&NQ)==CHAR&&!m65) return "__mulint8";
    if((t&NQ)==SHORT||(t&NQ)==INT||(t&NQ)==LONG||(t&NQ)==LLONG||(!ieee&&ISFLOAT(t))){
      if((c>=LSHIFT&&c<=MOD)||(c>=OR&&c<=AND)||c==KOMPLEMENT||c==MINUS){
	if(m65&&ISLONG(t)&&(c==MULT||(c==DIV&&!divbug&&(t&UNSIGNED)))) return 0;
	if(m65&&c==MULT&&ISSHORT(t)) return 0;
        if(t==(UNSIGNED|LLONG)&&(c==MULT||c==DIV||c==MOD||c==RSHIFT)){
          sprintf(fname,"__%suint64",ename[c]);
          ret=fname;
        }else if((t&NQ)==LLONG){
          sprintf(fname,"__%sint64",ename[c]);
          ret=fname;
        }else if(t==(UNSIGNED|LONG)&&(c==DIV||c==MOD||c==RSHIFT)){
          sprintf(fname,"__%suint32",ename[c]);
          ret=fname;
        }else if((t&NQ)==LONG){
          sprintf(fname,"__%sint32",ename[c]);
          ret=fname;
        }else if(t==(UNSIGNED|INT)&&(c==DIV||c==MOD||c==RSHIFT)){
          sprintf(fname,"__%suint16",ename[c]);
          ret=fname;
        }else if((t&NQ)==INT){
          sprintf(fname,"__%sint16",ename[c]);
          ret=fname;
        }else{
          sprintf(fname,"__%s%s%s%ld",ename[c],(t&UNSIGNED)?"u":"",ISFLOAT(t)?"flt":"int",zm2l(sizetab[t&NQ])*8);
          ret=fname;
        }
      }
    }
  }

  if(ret&&divbug&&(c==DIV||c==MOD)&&!ISFLOAT(t)) strcat(ret,"wo");

  return ret;
}


int pointer_varadr(Var *v)
{
  int b=bank(v);
  if(b>=0&&b!=bankcnum&&!NOBANKVARS){
    if(cur_funcv&&bank(cur_funcv)!=b)
      return FPOINTER;
  }
  return pointer_type(v->vtyp);
}

int pointer_type(struct Typ *p)
{
  struct Typ *merk=p;
  if(!p) ierror(0);
  if(LARGE) return FPOINTER;
  while(ISARRAY(p->flags)||ISFUNC(p->flags)) p=p->next;
  if(p->attr){
    char *s;
    if(strstr(p->attr,STR_HUGE)) return HPOINTER;
    if(strstr(p->attr,STR_FAR)) return FPOINTER;
    if(strstr(p->attr,STR_NEAR)) return POINTER;
  }
  return POINTER;
}

unsigned char cbmconv(unsigned char x)
{
  static unsigned char ctab[256]={
    0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x14,0x09,0x0D,0x11,0x93,0x0A,0x0E,0x0F,
    0x10,0x0B,0x12,0x13,0x08,0x15,0x16,0x17,0x18,0x19,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,
    0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,
    0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F,
    0x40,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,
    0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0x5B,0xBF,0x5D,0x5E,0xA4,
    0xAD,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F,
    0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5A,0xB3,0xDD,0xAB,0xB1,0xDF,
    0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,
    0x90,0x91,0x92,0x0C,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,
    0xA0,0xA1,0xA2,0xA3,0x5F,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0x7D,0xAC,0x60,0xAE,0xAF,
    0xB0,0x7E,0xB2,0x7B,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0x5C,
    0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,
    0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A,0x7B,0xDC,0x7C,0xDE,0x7F,
    0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,
    0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF
  };

  static unsigned char atab[]={0xfd,8,0x7f,0x9b,11,0x7d};

  if(cbmascii)
    return ctab[x&255];
  else if(atascii&&x>=7&&x<=12)
    return atab[x-7];
  else
    return x;
}

void insert_const(union atyps *p,int t)
/*  Traegt Konstante in entprechendes Feld ein.       */
{
  if(!p) ierror(0);
/*  *p = (union atyps) 0 ; /* rfi: clear unused bits */
  t&=NU;
  if(t==CHAR) {p->vchar=vchar;return;}
  if(t==SHORT) {p->vshort=vshort;return;}
  if(t==INT) {p->vint=vint;return;}
  if(t==LONG) {p->vlong=vlong;return;}
  if(t==LLONG) {p->vllong=vllong;return;}
  if(t==MAXINT) {p->vmax=vmax;return;}
  if(t==(UNSIGNED|CHAR)) {p->vuchar=vuchar;return;}
  if(t==(UNSIGNED|SHORT)) {p->vushort=vushort;return;}
  if(t==(UNSIGNED|INT)) {p->vuint=vuint;return;}
  if(t==(UNSIGNED|LONG)) {p->vulong=vulong;return;}
  if(t==(UNSIGNED|LLONG)) {p->vullong=vullong;return;}
  if(t==(UNSIGNED|MAXINT)) {p->vumax=vumax;return;}
  if(t==FLOAT) {p->vfloat=vfloat;return;}
  if(t==DOUBLE) {p->vdouble=vdouble;return;}
  if(t==LDOUBLE) {p->vldouble=vldouble;return;}
  if(t==POINTER) {p->vuint=vuint;return;}
  if(t==FPOINTER||t==HPOINTER) {p->vulong=vulong;return;}
}

void eval_const(union atyps *p,int t)
/*  Weist bestimmten globalen Variablen Wert einer CEXPR zu.       */
{
  int f=t&NQ;
  if(!p) ierror(0);
  if(f==MAXINT||(f>=CHAR&&f<=LLONG)){
    if(!(t&UNSIGNED)){
      if(f==CHAR) vmax=zc2zm(p->vchar);
      else if(f==SHORT)vmax=zs2zm(p->vshort);
      else if(f==INT)  vmax=zi2zm(p->vint);
      else if(f==LONG) vmax=zl2zm(p->vlong);
      else if(f==LLONG) vmax=zll2zm(p->vllong);
      else if(f==MAXINT) vmax=p->vmax;
      else ierror(0);
      vumax=zm2zum(vmax);
      vldouble=zm2zld(vmax);
    }else{
      if(f==CHAR) vumax=zuc2zum(p->vuchar);
      else if(f==SHORT)vumax=zus2zum(p->vushort);
      else if(f==INT)  vumax=zui2zum(p->vuint);
      else if(f==LONG) vumax=zul2zum(p->vulong);
      else if(f==LLONG) vumax=zull2zum(p->vullong);
      else if(f==MAXINT) vumax=p->vumax;
      else ierror(0);
      vmax=zum2zm(vumax);
      vldouble=zum2zld(vumax);
    }
  }else{
    if(ISPOINTER(f)){
      if(f==POINTER)
	vumax=zui2zum(p->vuint);
      else
	vumax=zul2zum(p->vulong);
      vmax=zum2zm(vumax);vldouble=zum2zld(vumax);
    }else{
      if(f==FLOAT) vldouble=zf2zld(p->vfloat);
      else if(f==DOUBLE) vldouble=zd2zld(p->vdouble);
      else vldouble=p->vldouble;
      vmax=zld2zm(vldouble);
      vumax=zld2zum(vldouble);
    }
  }
  vfloat=zld2zf(vldouble);
  vdouble=zld2zd(vldouble);
  vuchar=zum2zuc(vumax);
  vushort=zum2zus(vumax);
  vuint=zum2zui(vumax);
  vulong=zum2zul(vumax);
  vullong=zum2zull(vumax);
  vchar=zm2zc(vmax);
  vshort=zm2zs(vmax);
  vint=zm2zi(vmax);
  vlong=zm2zl(vmax);
  vllong=zm2zll(vmax);
}

void printval(FILE *f,union atyps *p,int t)
/*  Gibt atyps aus.                                     */
{
  t&=NU;
  if(t==CHAR){fprintf(f,"C");vmax=zc2zm(p->vchar);printzm(f,vmax);}
  if(t==(UNSIGNED|CHAR)){fprintf(f,"UC");vumax=zuc2zum(p->vuchar);printzum(f,vumax);}
  if(t==SHORT){fprintf(f,"S");vmax=zs2zm(p->vshort);printzm(f,vmax);}
  if(t==(UNSIGNED|SHORT)){fprintf(f,"US");vumax=zus2zum(p->vushort);printzum(f,vumax);}
  if(t==FLOAT){fprintf(f,"F");vldouble=zf2zld(p->vfloat);printzld(f,vldouble);}
  if(t==DOUBLE){fprintf(f,"D");vldouble=zd2zld(p->vdouble);printzld(f,vldouble);}
  if(t==LDOUBLE){fprintf(f,"LD");printzld(f,p->vldouble);}
  if(t==INT){fprintf(f,"I");vmax=zi2zm(p->vint);printzm(f,vmax);}
  if(t==(UNSIGNED|INT)||t==POINTER){fprintf(f,"UI");vumax=zui2zum(p->vuint);printzum(f,vumax);}
  if(t==LONG){fprintf(f,"L");vmax=zl2zm(p->vlong);printzm(f,vmax);}
  if(t==(UNSIGNED|LONG)||t==FPOINTER||t==HPOINTER){fprintf(f,"UL");vumax=zul2zum(p->vulong);printzum(f,vumax);}
  if(t==LLONG){fprintf(f,"LL");vmax=zll2zm(p->vllong);printzm(f,vmax);}
  if(t==(UNSIGNED|LLONG)){fprintf(f,"ULL");vumax=zull2zum(p->vullong);printzum(f,vumax);}
  if(t==MAXINT) printzm(f,p->vmax);
  if(t==(UNSIGNED|MAXINT)) printzum(f,p->vumax);
}

void emitval(FILE *f,union atyps *p,int t)
/*  Gibt atyps aus.                                     */
{
  t&=NU;
  if(t==CHAR){vmax=zc2zm(p->vchar);emitzm(f,vmax);}
  if(t==(UNSIGNED|CHAR)){vumax=zuc2zum(p->vuchar);emitzum(f,vumax);}
  if(t==SHORT){vmax=zs2zm(p->vshort);emitzm(f,vmax);}
  if(t==(UNSIGNED|SHORT)){vumax=zus2zum(p->vushort);emitzum(f,vumax);}
  if(t==FLOAT){vldouble=zf2zld(p->vfloat);emitzld(f,vldouble);}
  if(t==DOUBLE){vldouble=zd2zld(p->vdouble);emitzld(f,vldouble);}
  if(t==LDOUBLE){emitzld(f,p->vldouble);}
  if(t==INT){vmax=zi2zm(p->vint);emitzm(f,vmax);}
  if(t==(UNSIGNED|INT)||t==POINTER){vumax=zui2zum(p->vuint);emitzum(f,vumax);}
  if(t==LONG){vmax=zl2zm(p->vlong);emitzm(f,vmax);}
  if(t==(UNSIGNED|LONG)||t==FPOINTER||t==HPOINTER){vumax=zul2zum(p->vulong);emitzum(f,vumax);}
  if(t==LLONG){vmax=zll2zm(p->vllong);emitzm(f,vmax);}
  if(t==(UNSIGNED|LLONG)){vumax=zull2zum(p->vullong);emitzum(f,vumax);}
  if(t==MAXINT) emitzm(f,p->vmax);
  if(t==(UNSIGNED|MAXINT)) emitzum(f,p->vumax);
}

void conv_typ(struct Typ *p)
/* Erzeugt extended types in einem Typ. */
{
  char *attr;
  while(p){
    if(ISPOINTER(p->flags)){
      p->flags=((p->flags&~NU)|POINTER_TYPE(p->next));
      if(attr=p->next->attr){
        if(strstr(attr,STR_NEAR))
          p->flags=((p->flags&~NU)|POINTER);
        if(strstr(attr,STR_FAR))
          p->flags=((p->flags&~NU)|FPOINTER);
        if(strstr(attr,STR_HUGE))
          p->flags=((p->flags&~NU)|HPOINTER);
      }
    }
    p=p->next;
  }
}

void add_var_hook_post(Var *v)
{
  if(use_sec&&(v->storage_class==STATIC||v->storage_class==EXTERN)){
    char buf[SECLEN+32];
    sprintf(buf,"section(\"%s\");",use_sec);
    add_attr(&v->vattr,buf);
  }
  if(use_bank>=0&&(v->storage_class==STATIC||v->storage_class==EXTERN)){
    char buf[64];
    /*sprintf(buf,"section(\"bank%d\");bank(%d)",use_bank,use_bank);*/
    sprintf(buf,"bank(%d)",use_bank);
    add_attr(&v->vattr,buf);
  }
}

int decide_reverse(zmax v)
{
  if(zmeqto(v,Z1)||zmeqto(v,l2zm(2L)))
    return 1;
  if(optspeed)
    if(zmeqto(v,l2zm(4L))||zmeqto(v,l2zm(8L))||zmeqto(v,l2zm(256L))||zmeqto(v,l2zm(512L)))
      return 1;
  
  return 0;
}

static int is_single_eff_ic(struct IC *p)
{
  struct Var *v,*idx;
  if(p->code!=ADDI2P||(p->typf2&NQ)!=POINTER)
    return 0;
  if(!(p->q2.flags&KONST)){
    if((p->typf&NU)!=(UNSIGNED|CHAR))
      return 0;
    if((p->q2.flags&(VAR|DREFOBJ))!=VAR)
      return 0;
    if(p->q2.v->storage_class!=AUTO&&p->q2.v->storage_class!=REGISTER)
      return 0;
    idx=p->q2.v;
  }else{
    idx=0;
    eval_const(&p->q2.val,p->typf);
    /* TODO: more precise check considering data type useful? */
    if(!zmleq(vumax,l2zm(255L)))
      return 0;
    return 1;
  }
  if(p->q1.flags&DREFOBJ)
    return 0;
  if((p->z.flags&(VAR|DREFOBJ))!=VAR)
    return 0;
  if(p->z.v->storage_class==STATIC||p->z.v->storage_class==EXTERN)
    return 0;
  v=p->z.v;
  for(p=p->next;p;p=p->next){
    int c=p->code;
    if(c==LABEL||(c>=BEQ&&c<=BRA))
      return 1; /* TODO: how elaborate should we test? */
    if((p->q1.flags&VAR)&&p->q1.v==v){
      if(p->q1.flags&DREFOBJ)
        return 1;
      else
        return 0;
    }
    if((p->q2.flags&VAR)&&p->q2.v==v){
      if(p->q2.flags&DREFOBJ)
        return 1;
      else
        return 0;
    }
    if((p->z.flags&VAR)&&p->z.v==v){
      if(p->z.flags&DREFOBJ)
        return 1;
      else
        return 0;
    }
    if((p->z.flags&VAR)&&p->z.v==idx)
      return 0;
  }
  return 0;
}

void mark_eff_ics(void)
{
  struct IC *p;
  for(p=first_ic;p;p=p->next){
    if(is_single_eff_ic(p))
      p->flags|=EFF_IC;
    else
      p->flags&=~EFF_IC;
  }
}