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[/] [rf6809/] [trunk/] [software/] [vbcc/] [machines/] [hc12/] [machine.c] - Blame information for rev 20

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1 18 robfinch 
/*  Code generator for Motorola 68hc12 microcontrollers.               */
2 
 
3 
/*TODO:
4 
  regs_modified bei struct-copy
5 
  savings verfeinern
6 
  4-Byte Copy
7 
  [static] testen
8 
  peephole-Pass um ALLOCREGs zu entfernen
9 
  ACC_IND (Achtung?)
10 
  struct-copy Problemfälle
11 
  banked
12 
  bit
13 
  long long, float, double, long double
14 
 
15 
*/
16 
 
17 
#include "supp.h"
18 
#include "vbc.h" /* nicht schoen, aber ... */
19 
 
20 
static char FILE_[]=__FILE__;
21 
 
22 
#include "dwarf2.c"
23 
 
24 
/*  Public data that MUST be there.                             */
25 
 
26 
/* Name and copyright. */
27 
char cg_copyright[]="vbcc code-generator for 6809/6803/68hc12 V0.2 (c) in 2000-2022 by Volker Barthelmann";
28 
 
29 
/*  Commandline-flags the code-generator accepts                */
30 
int g_flags[MAXGF]={VALFLAG,VALFLAG,0,0,
31 
                    0,0,0,0,
32 
                    0,0};
33 
char *g_flags_name[MAXGF]={"cpu","fpu","no-delayed-popping","const-in-data",
34 
                           "merge-constants","no-peephole","mem-cse","acc-glob",
35 
                           "pcrel","drel","no-char-addi2p","nodx","nou"};
36 
union ppi g_flags_val[MAXGF];
37 
 
38 
/* Typenames (needed because of HAVE_EXT_TYPES). */
39 
char *typname[]={"strange","bit","char","short","int","long","long long",
40 
                 "float","double","long double","void",
41 
                 "near-pointer","far-pointer","huge-pointer",
42 
                 "array","struct","union","enum","function"};
43 
 
44 
int bitsperbyte = 8;
45 
int bytemask = 0xff;
46 
int dbl_bytemask = 0xffff;
47 
 
48 
/*  Alignment-requirements for all types in bytes.              */
49 
zmax align[MAX_TYPE+1];
50 
 
51 
/*  Alignment that is sufficient for every object.              */
52 
zmax maxalign;
53 
 
54 
/*  CHAR_BIT of the target machine.                             */
55 
zmax char_bit;
56 
 
57 
/*  Sizes of all elementary types in bytes.                     */
58 
zmax sizetab[MAX_TYPE+1];
59 
 
60 
/*  Minimum and Maximum values each type can have.              */
61 
/*  Must be initialized in init_cg().                           */
62 
zmax t_min[MAX_TYPE+1];
63 
zumax t_max[MAX_TYPE+1];
64 
zumax tu_max[MAX_TYPE+1];
65 
 
66 
/*  Names of all registers.                                     */
67 
char *regnames[]={"noreg","d","x","y","sp","u","d/x"};
68 
 
69 
/*  The Size of each register in bytes.                         */
70 
zmax regsize[MAXR+1];
71 
 
72 
/*  Type which can store each register. */
73 
struct Typ *regtype[MAXR+1];
74 
 
75 
/*  regsa[reg]!=0 if a certain register is allocated and should */
76 
/*  not be used by the compiler pass.                           */
77 
int regsa[MAXR+1];
78 
 
79 
/*  Specifies which registers may be scratched by functions.    */
80 
int regscratch[MAXR+1]={0,1,1,0,1,0};
81 
 
82 
int reg_prio[MAXR+1]={0,0,1,1,0,0};
83 
 
84 
struct reg_handle empty_reg_handle={0};
85 
 
86 
/* Names of target-specific variable attributes.                */
87 
char *g_attr_name[]={"__interrupt","__dpage","__far",0};
88 
#define INTERRUPT 1
89 
#define DPAGE     2
90 
#define FAR                             4
91 
 
92 
int MINADDI2P=CHAR;
93 
 
94 
/****************************************/
95 
/*  Some private data and functions.    */
96 
/****************************************/
97 
 
98 
static long malign[MAX_TYPE+1]=  {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1};
99 
static long msizetab[MAX_TYPE+1]={0,1,1,2,2,4,4,4,4,4,0,2,4,4,0,0,0,2,0};
100 
 
101 
struct Typ ityp={SHORT},ltyp={LONG};
102 
 
103 
#define DATA 0
104 
#define BSS 1
105 
#define CODE 2
106 
#define RODATA 3
107 
#define SPECIAL 4
108 
 
109 
static int section=-1,newobj,scnt,pushed_acc;
110 
static char *codename="\t.text\n",
111 
            *dataname="\t.data\n",
112 
            *bssname="\t.section\t.bss\n",
113 
            *rodataname="\t.section\t.rodata\n";
114 
 
115 
#define IMM_IND  1
116 
#define VAR_IND  2
117 
#define POST_INC 3
118 
#define POST_DEC 4
119 
#define PRE_INC  5
120 
#define PRE_DEC  6
121 
#define ACC_IND  7
122 
#define KONSTINC 8
123 
 
124 
/* (user)stack-pointer, pointer-tmp, int-tmp; reserved for compiler */
125 
static int acc=1,ix=2,iy=3,sp=4,iu=5,dx=6;
126 
static void pr(FILE *,struct IC *);
127 
static void function_top(FILE *,struct Var *,long);
128 
static void function_bottom(FILE *f,struct Var *,long);
129 
 
130 
static char *marray[]={"__section(x,y)=__vattr(\"section(\"#x\",\"#y\")\")",
131 
                       "__HC12__",
132 
                       "__SIZE_T_INT=1",
133 
                       "__direct=__vattr(\"section(\\\"dpage\\\")\")",
134 
                       0};
135 
 
136 
#define isreg(x) ((p->x.flags&(REG|DREFOBJ))==REG)
137 
#define isconst(x) ((p->x.flags&(KONST|DREFOBJ))==KONST)
138 
 
139 
static long loff,roff,stackoffset,notpopped,dontpop,maxpushed,stack;
140 
 
141 
static char *x_t[]={"?","","b","","","","","","","","","","","","","",""};
142 
static char *ccs[]={"eq","ne","lt","ge","le","gt"};
143 
static char *uccs[]={"eq","ne","lo","hs","ls","hi"};
144 
static char *logicals[]={"ora","eor","and"};
145 
static char *dct[]={"",".bit",".byte",".2byte",".2byte",".4byte",".8byte",".4byte",".8byte",".8byte",
146 
                    "(void)",".2byte",".34byte",".34byte"};
147 
static char *idprefix="",*labprefix=".l";
148 
static int exit_label,have_frame;
149 
static char *ret;
150 
static int stackchecklabel;
151 
static int frame_used,stack_valid;
152 
static int CPU=6812;
153 
static int pcrel,drel;
154 
static int skip_rel;
155 
static char *jsrinst="jsr";
156 
static char *jmpinst="jmp";
157 
static int nodx,nou;
158 
int switchsubs;
159 
 
160 
static int cc_t;
161 
static struct obj *cc;
162 
 
163 
static struct obj mobj;
164 
 
165 
#define STR_NEAR "near"
166 
#define STR_FAR "far"
167 
#define STR_HUGE "huge"
168 
#define STR_BADDR "baddr"
169 
 
170 
#define ISNULL() (zmeqto(vmax,l2zm(0L))&&zumeqto(vumax,ul2zum(0UL))&&zldeqto(vldouble,d2zld(0.0)))
171 
#define ISLWORD(t) ((t&NQ)==LONG||(t&NQ)==FPOINTER||(t&NQ)==HPOINTER||(t&NQ)==FLOAT)
172 
#define ISHWORD(t) ((t&NQ)==INT||(t&NQ)==SHORT||(t&NQ)==NPOINTER)
173 
#define ISCHWORD(t) ((t&NQ)==CHAR||ISHWORD(t))
174 
#define ISSTATIC(v) ((v)->storage_class==EXTERN||(v)->storage_class==STATIC)
175 
#define ISBADDR(v) ((v)->vtyp->attr&&strstr(STR_BADDR,(v)->vtyp->attr))
176 
/*FIXME*/
177 
#define ISFAR(v) ((v)->vtyp->attr&&(strstr(STR_FAR,(v)->vtyp->attr)||strstr(STR_HUGE,(v)->vtyp->attr)))
178 
 
179 
#define ISACC(x) ((x)==acc)
180 
#define ISX(x) ((x)==ix)
181 
#define ISY(x) ((x)==iy)
182 
#define ISU(x) ((x)==iu)
183 
#define ISIDX(x) (ISX(x)||ISY(x)||(ISU(x)&&CPU!=6812))
184 
#define ISRACC(x) (isreg(x)&&ISACC(p->x.reg))
185 
#define ISRX(x) (isreg(x)&&ISX(p->x.reg))
186 
#define ISRY(x) (isreg(x)&&ISY(p->x.reg))
187 
#define ISRU(x) (isreg(x)&&ISU(p->x.reg))
188 
#define ISRIDX(x) (isreg(x)&&ISIDX(p->x.reg))
189 
 
190 
#define CPUOPT ((g_flags[0]&USEDFLAG)?g_flags_val[0].l:6812)
191 
 
192 
#define SPUSH(x) (CPU==6812?"\tpsh" x "\n":"\tpshs\t" x "\n")
193 
#define SPUSHD   (CPU==6812?"\tpshd\n":"\tpshs\tb,a\n")
194 
#define SPULL(x) (CPU==6812?"\tpul" x "\n":"\tpuls\t" x "\n")
195 
#define SPULLD   (CPU==6812?"\tpuld\n":"\tpuls\ta,b\n")
196 
#define SCMP(x)  (CPU==6812?"\tcp" x "\t":"\tcmp" x "\t")
197 
#define SEX      (CPU==6812?"\tsex\tb,d\n":"\tsex\n")
198 
 
199 
#define SGN16(x) (zm2l(zi2zm(zm2zi(l2zm((long)(x))))))
200 
 
201 
enum peepf { NEEDSAME = 1, REMOVE1ST = 2, ALLOWSFX = 4};
202 
struct peeps {char *s1,*s2,*r;enum peepf flags;};
203 
 
204 
static int check_sfx(char *s)
205 
{
206 
  if(!*s) return 0;
207 
  s+=strlen(s)-1;
208 
  if(*s=='+'||*s=='-') return 1;
209 
  if(*s!='s'&&*s!='x'&&*s!='y'&&*s!='u') return 0;
210 
  s--;
211 
  if(*s!=',') return 0;
212 
  s--;
213 
  if(*s=='+'||*s=='-') return 1;
214 
  return 0;
215 
}
216 
 
217 
static int setszflag(char *op,char r)
218 
{
219 
  static char *zb[]={"adcb","addb","andb","aslb","asrb","clrb","comb","decb","eorb","incb",
220 
                "ldab","ldb","lslb","lsrb","negb","orb","orab","rolb","rorb","sbcb",
221 
                "stb","stab","subb","tstb"};
222 
  static char *zd[]={"addd","ldd","sex","std","subd"};
223 
 
224 
  int i;
225 
 
226 
  if(r=='b'){
227 
    for(i=0;i<sizeof(zb)/sizeof(*zb);i++)
228 
      if(!strcmp(op,zb[i]))
229 
        return 1;
230 
  }
231 
  if(r=='d'){
232 
    for(i=0;i<sizeof(zd)/sizeof(*zd);i++)
233 
      if(!strcmp(op,zd[i]))
234 
        return 1;
235 
  }
236 
  if(r=='x'&&(!strcmp(op,"leax")||!strcmp(op,"ldx"))) return 1;
237 
  if(r=='y'&&(!strcmp(op,"leay")||!strcmp(op,"ldy"))) return 1;
238 
  if(CPU==6812){
239 
    if(r=='x'&&(!strcmp(op,"dex")||!strcmp(op,"inx"))) return 1;
240 
    if(r=='y'&&(!strcmp(op,"dey")||!strcmp(op,"iny"))) return 1;
241 
  }
242 
  return 0;
243 
}
244 
 
245 
int emit_peephole(void)
246 
{
247 
  int entries,i,j,v1,v2;
248 
  char *asmline[EMIT_BUF_DEPTH];
249 
  char buf1[1024],buf2[1024];
250 
  char op1[8],op2[8];
251 
 
252 
 
253 
  /* TODO: adapt better */
254 
  static struct peeps elim[]={
255 
    "lda","sta",0,NEEDSAME,
256 
    "ldb","stb",0,NEEDSAME,
257 
    "ldaa","staa",0,NEEDSAME,
258 
    "ldab","stab",0,NEEDSAME,
259 
    "ldd","std",0,NEEDSAME,
260 
    "ldx","stx",0,NEEDSAME,
261 
    "ldy","sty",0,NEEDSAME,
262 
    "ldu","stu",0,NEEDSAME,
263 
    "sta","sta",0,NEEDSAME,
264 
    "stb","stb",0,NEEDSAME,
265 
    "staa","staa",0,NEEDSAME,
266 
    "stab","stab",0,NEEDSAME,
267 
    "std","std",0,NEEDSAME,
268 
    "stx","stx",0,NEEDSAME,
269 
    "sty","sty",0,NEEDSAME,
270 
    "stu","stu",0,NEEDSAME,
271 
    "sta","lda",0,NEEDSAME,
272 
    "stb","ldb",0,NEEDSAME,
273 
    "staa","ldaa",0,NEEDSAME,
274 
    "stab","ldab",0,NEEDSAME,
275 
    "std","ldd",0,NEEDSAME,
276 
    "stx","ldx",0,NEEDSAME,
277 
    "sty","ldy",0,NEEDSAME,
278 
    "stu","ldu",0,NEEDSAME,
279 
#if 0
280 
    "lda","lda",0,REMOVE1ST,
281 
    "ldaa","ldaa",0,REMOVE1ST,
282 
    "ldab","ldab",0,REMOVE1ST,
283 
    "ldb","ldb",0,REMOVE1ST,
284 
    "ldd","ldd",0,REMOVE1ST,
285 
    "ldx","ldx",0,REMOVE1ST,
286 
    "ldy","ldy",0,REMOVE1ST,
287 
    "ldu","ldu",0,REMOVE1ST,
288 
    "lda","pla",0,REMOVE1ST,
289 
    "lda","txa",0,REMOVE1ST,
290 
    "lda","tya",0,REMOVE1ST,
291 
    "ldx","tax",0,REMOVE1ST,
292 
    "ldy","tay",0,REMOVE1ST,
293 
    "tay","ldy",0,REMOVE1ST,
294 
    "tax","ldx",0,REMOVE1ST,
295 
    "txa","lda",0,REMOVE1ST,
296 
    "tya","lda",0,REMOVE1ST,
297 
#endif
298 
  };
299 
 
300 
 
301 
  i=emit_l;
302 
  if(emit_f==0)
303 
    entries=i-emit_f+1;
304 
  else
305 
    entries=EMIT_BUF_DEPTH;
306 
  asmline[0]=emit_buffer[i];
307 
  if(sscanf(asmline[0]," %6s %999s",op1,buf1)==2&&!strcmp(op1,"cmpb")&&!strcmp(buf1,"#0"))
308 
    strcpy(asmline[0],"\ttstb\n");
309 
  if(sscanf(asmline[0]," %6s %999s",op1,buf1)==2&&!strcmp(op1,"cmpd")&&!strcmp(buf1,"#0"))
310 
    strcpy(asmline[0],"\tsubd\t#0\n");
311 
 
312 
  if(entries>=2){
313 
    i--;
314 
    if(i<0) i=EMIT_BUF_DEPTH-1;
315 
    asmline[1]=emit_buffer[i];
316 
 
317 
    for(j=0;j<sizeof(elim)/sizeof(elim[0]);j++){
318 
      if(elim[j].flags&NEEDSAME){
319 
        if(sscanf(asmline[0]," %6s %999s",op2,buf2)==2&&
320 
           sscanf(asmline[1]," %6s %999s",op1,buf1)==2&&
321 
           !strcmp(op1,elim[j].s1)&&!strcmp(op2,elim[j].s2)&&
322 
           !strcmp(buf1,buf2)){
323 
          if(!check_sfx(buf1)&&!check_sfx(buf2)){
324 
            if(elim[j].r){
325 
              strcpy(asmline[0],elim[j].r);
326 
            }else{
327 
              if(elim[j].flags&REMOVE1ST)
328 
                strcpy(asmline[1],asmline[0]);
329 
              remove_asm();
330 
            }
331 
            return 1;
332 
          }
333 
        }
334 
      }else{
335 
        *buf1=0;*buf2=0;
336 
        if(sscanf(asmline[1]," %6s %999s",op1,buf1)>=1&&
337 
           sscanf(asmline[0]," %6s %999s",op2,buf2)>=1&&
338 
           !strcmp(op1,elim[j].s1)&&!strcmp(op2,elim[j].s2)){
339 
          if((elim[j].flags&ALLOWSFX)||(!check_sfx(buf1)&&!check_sfx(buf2))){
340 
            if(elim[j].flags&REMOVE1ST)
341 
              strcpy(asmline[1],asmline[0]);
342 
            remove_asm();
343 
            return 1;
344 
          }
345 
        }
346 
      }
347 
    }
348 
 
349 
    if(!strcmp(asmline[0],"\trts\n")&&sscanf(asmline[1]," %6s %999s",op1,buf1)==2&&!strcmp(op1,"puls")){
350 
      sprintf(asmline[1]+strlen(asmline[1])-1,",pc\n");
351 
      remove_asm();
352 
      return 1;
353 
    }
354 
 
355 
    if(!strcmp(asmline[0],"\tstb\t0,s\n")&&!strcmp(asmline[1],"\tleas\t-1,s\n")){
356 
      strcpy(asmline[1],"\tpshs\tb\n");
357 
      remove_asm();
358 
      return 1;
359 
    }
360 
 
361 
    if(!strcmp(asmline[0],"\tstd\t0,s\n")&&!strcmp(asmline[1],"\tleas\t-2,s\n")){
362 
      strcpy(asmline[1],"\tpshs\tb,a\n");
363 
      remove_asm();
364 
      return 1;
365 
    }
366 
 
367 
    if(!strcmp(asmline[0],"\tldb\t0,s\n")&&!strcmp(asmline[1],"\tpshs\tb\n")){
368 
      remove_asm();
369 
      return 1;
370 
    }
371 
 
372 
    if(!strcmp(asmline[0],"\tldd\t0,s\n")&&!strcmp(asmline[1],"\tpshs\tb,a\n")){
373 
      remove_asm();
374 
      return 1;
375 
    }
376 
 
377 
    if(!strcmp(asmline[0],"\tpshs\tb,a\n")&&!strcmp(asmline[1],"\tpuls\ta,b\n")){
378 
      strcpy(asmline[1],"\tldd\t0,s\n");
379 
      remove_asm();
380 
      return 1;
381 
    }
382 
 
383 
    if(sscanf(asmline[1]," ldd %999s",op1)>=1&&sscanf(asmline[0]," ldd %999s",op2)>=1){
384 
      if(!((op2[0]=='a'||op2[0]=='b'||op2[0]=='d')&&op2[1]==',')){
385 
        strcpy(asmline[1],asmline[0]);
386 
        remove_asm();
387 
        return 1;
388 
      }
389 
    }
390 
 
391 
    if(!strcmp(asmline[0],"\ttfr\tx,d\n")&&!strcmp(asmline[1],"\ttfr\td,x\n")){
392 
      remove_asm();
393 
      return 1;
394 
    }
395 
    if(!strcmp(asmline[0],"\ttfr\ty,d\n")&&!strcmp(asmline[1],"\ttfr\td,y\n")){
396 
      remove_asm();
397 
      return 1;
398 
    }
399 
    if(!strcmp(asmline[0],"\tstd\t0,sp\n")&&!strcmp(asmline[1],"\tpshd\n")){
400 
      remove_asm();
401 
      return 1;
402 
    }
403 
    if(!strcmp(asmline[0],"\tldd\t0,sp\n")&&!strcmp(asmline[1],"\tpshd\n")){
404 
      remove_asm();
405 
      return 1;
406 
    }
407 
 
408 
    if(sscanf(asmline[0]," leas %d,s",&v1)==1&&sscanf(asmline[1]," leas %d,s",&v2)==1){
409 
      sprintf(asmline[1],"\tleas\t%ld,s\n",SGN16(v1+v2));
410 
      remove_asm();
411 
      return 1;
412 
    }
413 
 
414 
    if(CPU!=6812&&sscanf(asmline[0]," tfr %c,%c",buf1,buf2)==2){
415 
      if((*buf1=='x'||*buf1=='y'||*buf1=='u'||*buf1=='s')&&
416 
         (*buf2=='x'||*buf2=='y'||*buf2=='u'||*buf2=='s')){
417 
        sprintf(asmline[0],"\tlea%c\t,%c\n",*buf2,*buf1);
418 
      }
419 
    }
420 
    if(CPU==6812&&(!strcmp(asmline[1],"\tdex\n")||!strcmp(asmline[1],"\tdey\n")||!strcmp(asmline[1],"\tsubd\t#1\n"))&&
421 
       (!strncmp(asmline[0],"\tbne\t",5)||!strncmp(asmline[0],"\tbeq\t",5))){
422 
      char r=asmline[1][3];
423 
      if(r=='b') r='d';
424 
      strcpy(asmline[1],"\td");
425 
      strncpy(asmline[1]+2,asmline[0]+1,4);
426 
      asmline[1][6]=r;asmline[1][7]=',';
427 
      strcpy(asmline[1]+8,asmline[0]+5);
428 
      remove_asm();
429 
      return 1;
430 
    }
431 
    if(CPU==6812&&(!strcmp(asmline[1],"\tinx\n")||!strcmp(asmline[1],"\tiny\n")||!strcmp(asmline[1],"\taddd\t#1\n"))&&
432 
       (!strncmp(asmline[0],"\tbne\t",5)||!strncmp(asmline[0],"\tbeq\t",5))){
433 
      char r=asmline[1][3];
434 
      strcpy(asmline[1],"\ti");
435 
      strncpy(asmline[1]+2,asmline[0]+1,4);
436 
      asmline[1][6]=r;asmline[1][7]=',';
437 
      strcpy(asmline[1]+8,asmline[0]+5);
438 
      remove_asm();
439 
      return 1;
440 
    }
441 
  }
442 
  if(entries>=3){
443 
    i--;
444 
    if(i<0) i=EMIT_BUF_DEPTH-1;
445 
    asmline[2]=emit_buffer[i];
446 
    if(sscanf(asmline[0]," %6s %999s",op1,buf1)==2){
447 
      if(!strcmp(op1,"beq")||!strcmp(op1,"bne")){
448 
        if(!strcmp(asmline[1],"\ttstb\n")||!strcmp(asmline[1],"\tcpb\t#0\n")){
449 
          if(sscanf(asmline[2]," %6s %999s",op2,buf2)>=1&&
450 
             setszflag(op2,'b')){
451 
            strcpy(asmline[1],asmline[0]);
452 
            remove_asm();
453 
            return 1;
454 
          }
455 
        }
456 
        if(sscanf(asmline[1]," %6s %999s",op2,buf2)==2&&
457 
           (!strcmp(op2,"subd")||!strcmp(op2,"cpd"))&&!strcmp(buf2,"#0")){
458 
          if(sscanf(asmline[2]," %6s %999s",op2,buf2)>=1&&
459 
             setszflag(op2,'d')){
460 
            strcpy(asmline[1],asmline[0]);
461 
            remove_asm();
462 
            return 1;
463 
          }
464 
        }
465 
        if(sscanf(asmline[1]," %6s %999s",op2,buf2)==2&&
466 
           !strcmp(op2,(CPU==6812)?"cpx":"cmpx")&&!strcmp(buf2,"#0")){
467 
          if(sscanf(asmline[2]," %6s %999s",op2,buf2)>=1&&
468 
             setszflag(op2,'x')){
469 
            strcpy(asmline[1],asmline[0]);
470 
            remove_asm();
471 
            return 1;
472 
          }
473 
        }
474 
        if(sscanf(asmline[1]," %6s %999s",op2,buf2)==2&&
475 
           !strcmp(op2,(CPU==6812)?"cpy":"cmpy")&&!strcmp(buf2,"#0")){
476 
          if(sscanf(asmline[2]," %6s %999s",op2,buf2)>=1&&
477 
             setszflag(op2,'y')){
478 
            strcpy(asmline[1],asmline[0]);
479 
            remove_asm();
480 
            return 1;
481 
          }
482 
        }
483 
      }
484 
    }
485 
  }
486 
  return 0;
487 
}
488 
 
489 
static int special_section(FILE *f,struct Var *v)
490 
{
491 
  char *sec;
492 
  if(v->tattr&DPAGE){
493 
    emit(f,"\t.section\t.dpage\n");
494 
  }else{
495 
    if(!v->vattr) return 0;
496 
    sec=strstr(v->vattr,"section(");
497 
    if(!sec) return 0;
498 
    sec+=strlen("section(");
499 
    emit(f,"\t.section\t");
500 
    while(*sec&&*sec!=')') emit_char(f,*sec++);
501 
    emit(f,"\n");
502 
  }
503 
  if(f) section=SPECIAL;
504 
  return 1;
505 
}
506 
 
507 
static struct fpconstlist {
508 
    struct fpconstlist *next;
509 
    int label,typ;
510 
    union atyps val;
511 
} *firstfpc;
512 
 
513 
static int addfpconst(struct obj *o,int t)
514 
{
515 
  struct fpconstlist *p=firstfpc;
516 
  t&=NQ;
517 
  if(g_flags[4]&USEDFLAG){
518 
    for(p=firstfpc;p;p=p->next){
519 
      if(t==p->typ){
520 
        eval_const(&p->val,t);
521 
        if(t==FLOAT&&zldeqto(vldouble,zf2zld(o->val.vfloat))) return p->label;
522 
        if(t==DOUBLE&&zldeqto(vldouble,zd2zld(o->val.vdouble))) return p->label;
523 
        if(t==LDOUBLE&&zldeqto(vldouble,o->val.vldouble)) return p->label;
524 
      }
525 
    }
526 
  }
527 
  p=mymalloc(sizeof(struct fpconstlist));
528 
  p->next=firstfpc;
529 
  p->label=++label;
530 
  p->typ=t;
531 
  p->val=o->val;
532 
  firstfpc=p;
533 
  return p->label;
534 
}
535 
 
536 
int pointer_type(struct Typ *p)
537 
{
538 
  if(!p) ierror(0);
539 
  while((p->flags&NQ)==ARRAY) p=p->next;
540 
  if((p->flags&NQ)==FUNKT) {
541 
        if(p->attr)
542 
        if(strstr(p->attr,STR_FAR)) return FPOINTER;
543 
        if (p->flags&FAR)
544 
                return FPOINTER;
545 
        return NPOINTER; /*FIXME: banked*/
546 
  }
547 
  if(p->attr){
548 
    if(strstr(p->attr,STR_HUGE)) return HPOINTER;
549 
    if(strstr(p->attr,STR_FAR)) return FPOINTER;
550 
    if(strstr(p->attr,STR_NEAR)) return NPOINTER;
551 
  }
552 
  /*FIXME*/
553 
  return NPOINTER;
554 
}
555 
static long voff(struct obj *p)
556 
{
557 
  if(zm2l(p->v->offset)<0)
558 
    return loff-zm2l(p->v->offset)+zm2l(p->val.vmax)-stackoffset+1;
559 
  else
560 
    return zm2l(p->v->offset)+zm2l(p->val.vmax)-stackoffset;
561 
}
562 
 
563 
static void emit_obj(FILE *f,struct obj *p,int t)
564 
/*  Gibt Objekt auf Bildschirm aus                      */
565 
{
566 
  if(p->am){
567 
    int flags=p->am->flags;
568 
    if(flags==ACC_IND){
569 
      emit(f,"%s,%s",regnames[acc],regnames[p->am->base]);
570 
      return;
571 
    }
572 
    if(flags==KONSTINC){
573 
      eval_const(&p->val,p->am->base);
574 
      if((t&NQ)==CHAR){
575 
        vumax=zumrshift(vumax,bitsperbyte*3-bitsperbyte*p->am->offset);
576 
        vumax=zumand(vumax,ul2zum(tu_max[CHAR]));
577 
      }else{
578 
        vumax=zumrshift(vumax,bitsperbyte*2-bitsperbyte*p->am->offset);
579 
        vumax=zumand(vumax,ul2zum(tu_max[SHORT]));
580 
      }
581 
      emit(f,"#%lu",zum2ul(vumax));
582 
      return;
583 
    }
584 
    if(flags<POST_INC||flags>PRE_DEC||CPU==6812)
585 
      emit(f,"%ld",p->am->offset&tu_max[SHORT]);
586 
    if(p->am->v){
587 
      if(p->am->v->storage_class==STATIC)
588 
        emit(f,"+%s%ld",labprefix,zm2l(p->am->v->offset));
589 
      else
590 
        emit(f,"+(%s%s)",idprefix,p->am->v->identifier);
591 
    }
592 
    emit(f,",");
593 
    if(flags==PRE_INC){
594 
      emit(f,"+");
595 
      if(p->am->offset==2&&CPU!=6812) emit(f,"+");
596 
    }else if(flags==PRE_DEC){
597 
      emit(f,"-");
598 
      if(p->am->offset==2&&CPU!=6812) emit(f,"-");
599 
    }
600 
    emit(f,"%s",regnames[p->am->base]);
601 
    if(flags==POST_INC){
602 
      emit(f,"+");
603 
      if(p->am->offset==2&&CPU!=6812) emit(f,"+");
604 
    }else if(flags==POST_DEC){
605 
      emit(f,"-");
606 
      if(p->am->offset==2&&CPU!=6812) emit(f,"-");
607 
    }
608 
    return;
609 
  }
610 
  if((p->flags&(KONST|DREFOBJ))==(KONST|DREFOBJ)){
611 
    emitval(f,&p->val,p->dtyp&NU);
612 
    return;
613 
  }
614 
  if(p->flags&VARADR) emit(f,"#");
615 
  if((p->flags&(DREFOBJ|REG))==(DREFOBJ|REG)) emit(f,"0,");
616 
  if((p->flags&(DREFOBJ|REG))==DREFOBJ) emit(f,"[");
617 
  if((p->flags&(VAR|REG))==VAR){
618 
    if(p->v->storage_class==AUTO||p->v->storage_class==REGISTER){
619 
      emit(f,"%ld,%s",voff(p),regnames[sp]);
620 
    }else{
621 
      if(!zmeqto(l2zm(0L),p->val.vmax)){
622 
        emit(f,"%ld",zm2l(zi2zm(zm2zi(p->val.vmax))));
623 
        emit(f,"+");
624 
      }
625 
      if(p->v->storage_class==STATIC){
626 
        emit(f,"%s%ld",labprefix,zm2l(p->v->offset));
627 
      }else{
628 
        emit(f,"(%s%s)",idprefix,p->v->identifier);
629 
      }
630 
      if(pcrel&&!(p->flags&VARADR)&&ISFUNC(p->v->vtyp->flags))
631 
        emit(f,",pc");
632 
      if(drel&&!(p->flags&VARADR)&&!ISFUNC(p->v->vtyp->flags)){
633 
        if(CPU==6812) ierror(0);
634 
        emit(f,",%s",regnames[iu]);
635 
      }
636 
    }
637 
  }
638 
  if(p->flags&REG){
639 
    if(ISACC(p->reg)&&(t&NQ)==CHAR)
640 
      emit(f,"b");
641 
    else
642 
      emit(f,"%s",regnames[p->reg]);
643 
  }
644 
  if(p->flags&KONST){
645 
    if(ISFLOAT(t)){
646 
      emit(f,"%s%d",labprefix,addfpconst(p,t));
647 
    }else{
648 
      emit(f,"#");emitval(f,&p->val,t&NU);
649 
    }
650 
  }
651 
  if((p->flags&(DREFOBJ|REG))==DREFOBJ){
652 
    if(p->v->storage_class==EXTERN||p->v->storage_class==STATIC){
653 
      if(is_const(p->v->vtyp)){
654 
        if(!pcrel&&CPU==6812) emit(f,",pc");
655 
      }else{
656 
        if(!drel&&CPU==6812) emit(f,",pc");
657 
      }
658 
    }
659 
    emit(f,"]");
660 
  }
661 
}
662 
 
663 
static void dwarf2_print_frame_location(FILE *f,struct Var *v)
664 
{
665 
  /*FIXME: needs a location list and correct register translation */
666 
  struct obj o;
667 
  o.flags=REG;
668 
  o.reg=sp;
669 
  o.val.vmax=l2zm(0L);
670 
  o.v=0;
671 
  dwarf2_print_location(f,&o);
672 
}
673 
static int dwarf2_regnumber(int r)
674 
{
675 
  /*FIXME: always returns D as accumulator, even if byte size */
676 
  static int dwarf_regs[MAXR+1]={-1,3,7,8,15};
677 
  return dwarf_regs[r];
678 
}
679 
static zmax dwarf2_fboffset(struct Var *v)
680 
{
681 
  /*FIXME*/
682 
  if(!v||(v->storage_class!=AUTO&&v->storage_class!=REGISTER)) ierror(0);
683 
  if(!zmleq(l2zm(0L),v->offset))
684 
    return l2zm((long)(loff-zm2l(v->offset)));
685 
  else
686 
    return v->offset;
687 
}
688 
 
689 
/* test operand for mov instruction */
690 
static int mov_op(struct obj *o)
691 
{
692 
  long off;
693 
  if(CPU!=6812) return 0;
694 
  if(o->am){
695 
    int f=o->am->flags;
696 
    if(f==POST_INC||f==PRE_INC||f==POST_DEC||f==PRE_DEC||f==ACC_IND)
697 
      return 1;
698 
    if(f==IMM_IND){
699 
      if(o->am->v) return 0;
700 
      off=o->am->offset;
701 
      if(off>=-256&&off<=255)
702 
        return 1;
703 
      else
704 
        return 0;
705 
    }
706 
    ierror(0);
707 
  }
708 
  if(o->flags&(KONST|VARADR)) return 1;
709 
  if((o->flags&(REG|DREFOBJ))==(REG|DREFOBJ)) return 1;
710 
  if((o->flags&(VAR|REG|DREFOBJ))==VAR){
711 
    if(o->v->storage_class==STATIC||o->v->storage_class==EXTERN)
712 
      return 1;
713 
    off=voff(o);
714 
    if(off>=-256&&off<=255)
715 
      return 1;
716 
    else
717 
      return 0;
718 
  }
719 
  return 0;
720 
}
721 
 
722 
/* add an offset to an object describing a memory address */
723 
static void inc_addr(struct obj *o,long val,int t)
724 
{
725 
  if(o->am){
726 
    int f=o->am->flags;
727 
    if(f==IMM_IND||f==KONSTINC)
728 
      o->am->offset+=val;
729 
    else if(f==POST_INC||f==POST_DEC||f==PRE_INC||f==PRE_DEC){
730 
      struct AddressingMode *old=o->am;
731 
      o->am=mymalloc(sizeof(*o->am));
732 
      o->am->flags=IMM_IND;
733 
      o->am->base=old->base;
734 
      o->am->v=0;
735 
      if(f==POST_DEC) o->am->offset=old->offset-val;
736 
      else if(f==POST_INC) o->am->offset=-old->offset+val;
737 
      else if(f==PRE_DEC) o->am->offset=val;
738 
      else o->am->offset=-val;
739 
    }else
740 
      ierror(0);
741 
  }else if(o->flags&DREFOBJ){
742 
    struct AddressingMode *am;
743 
    o->am=am=mymalloc(sizeof(*am));
744 
    am->flags=IMM_IND;
745 
    if(!o->reg) ierror(0);
746 
    am->base=o->reg;
747 
    am->offset=zm2l(val);
748 
    am->v=0;
749 
  }else if(o->flags&KONST){
750 
    struct AddressingMode *am;
751 
    if(o->am) ierror(0);
752 
    o->am=am=mymalloc(sizeof(*am));
753 
    am->flags=KONSTINC;
754 
    am->offset=zm2l(val);
755 
    am->base=t;
756 
  }else{
757 
    o->val.vmax=zmadd(o->val.vmax,val);
758 
  }
759 
}
760 
 
761 
/* pushed on the stack by a callee, no pop needed */
762 
static void callee_push(long l)
763 
{
764 
  if(l-stackoffset>stack)
765 
    stack=l-stackoffset;
766 
}
767 
static void push(long l)
768 
{
769 
  stackoffset-=l;
770 
  if(stackoffset<maxpushed) maxpushed=stackoffset;
771 
  if(-maxpushed>stack) stack=-maxpushed;
772 
}
773 
static void pop(long l)
774 
{
775 
  stackoffset+=l;
776 
}
777 
static void gen_pop(FILE *f,long l)
778 
{
779 
  if(l==0) return;
780 
  if(l==1&&CPU==6812){
781 
    emit(f,"\tins\n");
782 
#if 0 /* might clobber return register */
783 
  }else if(l==2&&!regs[acc]){
784 
    emit(f,SPULLD);
785 
    BSET(regs_modified,acc);
786 
  }else if(l==2&&!regs[ix]){
787 
    emit(f,SPULL("x"));
788 
    BSET(regs_modified,ix);
789 
  }else if(l==2&&!regs[iy]){
790 
    emit(f,SPULL("y"));
791 
    BSET(regs_modified,iy);
792 
#endif
793 
  }else{
794 
    emit(f,"\tleas\t%u,%s\n",SGN16(l),regnames[sp]);
795 
  }
796 
  pop(l);
797 
}
798 
static void pr(FILE *f,struct IC *p)
799 
{
800 
  int r;
801 
  if(pushed_acc){
802 
    emit(f,SPULLD);
803 
    pop(2);
804 
    pushed_acc=0;
805 
  }
806 
  for(r=MAXR;r>=1;r--){
807 
    if(regs[r]&8){
808 
      emit(f,"\t%s%s\n",CPU==6812?"pul":"puls\t",regnames[r]);
809 
      pop(2);
810 
    }
811 
    regs[r]&=~12;
812 
  }
813 
}
814 
static void function_top(FILE *f,struct Var *v,long offset)
815 
/*  erzeugt Funktionskopf                       */
816 
{
817 
  int i;
818 
  emit(f,"# offset=%ld\n",offset);
819 
  have_frame=0;stack_valid=1;stack=0;
820 
  if(!special_section(f,v)&&section!=CODE){emit(f,codename);if(f) section=CODE;}
821 
  if(v->storage_class==EXTERN){
822 
    if((v->flags&(INLINEFUNC|INLINEEXT))!=INLINEFUNC)
823 
      emit(f,"\t.global\t%s%s\n",idprefix,v->identifier);
824 
    emit(f,"%s%s:\n",idprefix,v->identifier);
825 
  }else{
826 
    emit(f,"%s%ld:\n",labprefix,zm2l(v->offset));
827 
  }
828 
  roff=0;
829 
  for(i=MAXR;i>0;i--){
830 
    if(regused[i]&&!regscratch[i]&&!regsa[i]){
831 
      have_frame=1;
832 
      loff+=2;
833 
      roff+=2;
834 
      if(i==iy) emit(f,SPUSH("y"));
835 
      else if(i==iu){
836 
        if(CPU!=6812&&regused[iy]){
837 
          emit(f,"\tpshs\tu,y\n");
838 
          loff+=2;roff+=2;i=iy;
839 
        }else
840 
          emit(f,SPUSH("u"));
841 
      }else
842 
        ierror(0);
843 
    }
844 
  }
845 
  if(stack_check){
846 
    stackchecklabel=++label;
847 
    emit(f,"\tldy\t#%s%d\n",labprefix,stackchecklabel);
848 
    /* FIXME: banked */
849 
    emit(f,"\t%s\t%s__stack_check\n",jsrinst,idprefix);
850 
  }
851 
  if(offset){
852 
    if(CPU==6812&&offset==1)
853 
      emit(f,SPUSH("b"));
854 
    else if(CPU==6812&&offset==2)
855 
      emit(f,SPUSHD);
856 
    else
857 
      emit(f,"\tleas\t%ld,%s\n",SGN16(-offset),regnames[sp]);
858 
    have_frame=1;
859 
  }
860 
}
861 
static void function_bottom(FILE *f,struct Var *v,long offset)
862 
/*  erzeugt Funktionsende                       */
863 
{
864 
  int i;
865 
  offset-=roff;
866 
  if(offset){
867 
    if(offset==1&&CPU==6812)
868 
      emit(f,"\tins\n");
869 
    else if(offset==2&&CPU==6812&&!zmeqto(szof(v->vtyp->next),l2zm(4L)))
870 
      emit(f,SPULL("x"));
871 
    else if(offset==2&&CPU==6812&&regused[iy])
872 
      emit(f,SPULL("y"));
873 
    else
874 
      emit(f,"\tleas\t%ld,%s\n",SGN16(offset),regnames[sp]);
875 
  }
876 
  for(i=1;i<=MAXR;i++){
877 
    if(regused[i]&&!regscratch[i]&&!regsa[i]){
878 
      have_frame=1;
879 
      if(i==iy){
880 
        if(CPU!=6812&&regused[iu]&&!regscratch[iu]&&!regsa[iu]){
881 
          emit(f,"\tpuls\tu,y\n");
882 
          i=iu;
883 
        }else
884 
          emit(f,SPULL("y"));
885 
      }else if(i==iu) emit(f,SPULL("u"));
886 
      else
887 
        ierror(0);
888 
    }
889 
  }
890 
  if(ret) emit(f,"\t%s\n",ret);
891 
  if(v->storage_class==EXTERN){
892 
    emit(f,"\t.type\t%s%s,@function\n",idprefix,v->identifier);
893 
    emit(f,"\t.size\t%s%s,$-%s%s\n",idprefix,v->identifier,idprefix,v->identifier);
894 
  }else{
895 
    emit(f,"\t.type\t%s%ld,@function\n",labprefix,zm2l(v->offset));
896 
    emit(f,"\t.size\t%s%ld,$-%s%ld\n",labprefix,zm2l(v->offset),labprefix,zm2l(v->offset));
897 
  }
898 
  if(stack_check)
899 
    emit(f,"\t.equ\t%s%d,%ld\n",labprefix,stackchecklabel,offset-maxpushed);
900 
  if(stack_valid){
901 
    if(!v->fi) v->fi=new_fi();
902 
    v->fi->flags|=ALL_STACK;
903 
    v->fi->stack1=l2zm(stack+offset);
904 
    emit(f,"# stacksize=%ld\n",stack+offset);
905 
    emit(f,"\t.equ\t%s__stack_%s,%ld\n",idprefix,v->identifier,stack+offset);
906 
  }
907 
}
908 
static int compare_objects(struct obj *o1,struct obj *o2)
909 
{
910 
  if(o1->flags==o2->flags&&o1->am==o2->am){
911 
    if(!(o1->flags&VAR)||(o1->v==o2->v&&zmeqto(o1->val.vmax,o2->val.vmax))){
912 
      if(!(o1->flags&REG)||o1->reg==o2->reg){
913 
        return 1;
914 
      }
915 
    }
916 
  }
917 
  return 0;
918 
}
919 
 
920 
/*FIXME*/
921 
static void clear_ext_ic(struct ext_ic *p)
922 
{
923 
  p->flags=0;
924 
  p->r=0;
925 
  p->offset=0;
926 
}
927 
static long pof2(zumax x)
928 
/*  Yields log2(x)+1 oder 0. */
929 
{
930 
  zumax p;int ln=1;
931 
  p=ul2zum(1L);
932 
  while(ln<=32&&zumleq(p,x)){
933 
    if(zumeqto(x,p)) return ln;
934 
    ln++;p=zumadd(p,p);
935 
  }
936 
  return 0;
937 
}
938 
static void peephole(struct IC *p)
939 
{
940 
  int c,c2,r,t;struct IC *p2;
941 
  struct AddressingMode *am;
942 
  zmax incmin,incmax;
943 
  if(CPU==6812){
944 
    incmin=l2zm(-8L);
945 
    incmax=l2zm(8L);
946 
  }else{
947 
    incmin=l2zm(-2L);
948 
    incmax=l2zm(2L);
949 
  }
950 
  frame_used=0;
951 
  for(;p;p=p->next){
952 
    c=p->code;
953 
    if(!frame_used){
954 
      if((p->q1.flags&(REG|VAR))==VAR&&!ISSTATIC(p->q1.v)) frame_used=1;
955 
      if((p->q2.flags&(REG|VAR))==VAR&&!ISSTATIC(p->q2.v)) frame_used=1;
956 
      if((p->z.flags&(REG|VAR))==VAR&&!ISSTATIC(p->z.v)) frame_used=1;
957 
    }
958 
    /* letztes Label merken */
959 
    if(c!=FREEREG&&c!=ALLOCREG&&(c!=SETRETURN||!isreg(q1)||p->q1.reg!=p->z.reg)) exit_label=0;
960 
    if(c==LABEL) exit_label=p->typf;
961 
#if 0
962 
    /* and x,#const;bne/beq, FIXME */
963 
    if(c==AND&&isconst(q2)&&isreg(z)){
964 
      long bit;
965 
      eval_const(&p->q2.val,p->typf);
966 
      if(bit=pof2(vumax)){
967 
        struct IC *cmp=0;int fr=0;
968 
        for(p2=p->next;p2;p2=p2->next){
969 
          c2=p2->code;
970 
          if(c2==TEST){
971 
            if((p2->q1.flags&(REG|DREFOBJ))==REG&&p2->q1.reg==p->z.reg){
972 
              cmp=p2;continue;
973 
            }
974 
          }
975 
          if(c2==COMPARE&&(p2->q1.flags&(REG|DREFOBJ))==REG&&p2->q1.reg==p->z.reg&&(p2->q2.flags&(KONST|DREFOBJ))==KONST){
976 
            eval_const(&p2->q2.val,p2->typf);
977 
            if(ISNULL()){
978 
              cmp=p2;continue;
979 
            }
980 
            break;
981 
          }
982 
          if(c2==FREEREG&&p2->q1.reg==p->z.reg) {fr++;continue;}
983 
          if((c2==BNE||c2==BEQ)&&cmp&&fr==1){
984 
            p->ext.flags=EXT_IC_BTST;
985 
            p2->ext.flags=EXT_IC_BTST;
986 
            p2->ext.offset=bit-1;
987 
            cmp->code=NOP;
988 
            cmp->q1.flags=cmp->q2.flags=cmp->z.flags=0;
989 
            break;
990 
          }
991 
          if(((p2->q1.flags&REG)&&p2->q1.reg==p->z.reg)||((p2->q2.flags&REG)&&p2->q2.reg==p->z.reg)||((p2->z.flags&REG)&&p2->z.reg==p->z.reg)) break;
992 
          if(c2==CALL||c2==LABEL||(c2>=BEQ&&c2<=BRA)) break;
993 
        }
994 
      }
995 
    }
996 
#endif
997 
    /* Try d,idx */
998 
    if(c==ADDI2P&&ISRACC(q2)&&ISRIDX(z)&&(ISRIDX(q1)||p->q2.reg!=p->z.reg)){
999 
      int base,idx;struct obj *o;
1000 
      r=p->z.reg;idx=p->q2.reg;
1001 
      if(isreg(q1)) base=p->q1.reg; else base=r;
1002 
      o=0;
1003 
      for(p2=p->next;p2;p2=p2->next){
1004 
        c2=p2->code;
1005 
        if(c2==CALL||c2==LABEL||(c2>=BEQ&&c2<=BRA)) break;
1006 
        if(c2!=FREEREG&&(p2->q1.flags&(REG|DREFOBJ))==REG&&p2->q1.reg==r) break;
1007 
        if(c2!=FREEREG&&(p2->q2.flags&(REG|DREFOBJ))==REG&&p2->q2.reg==r) break;
1008 
        if((p2->z.flags&(REG|DREFOBJ))==REG&&p2->z.reg==idx&&idx!=r) break;
1009 
 
1010 
        if(c2!=CALL&&(c2<LABEL||c2>BRA)/*&&c2!=ADDRESS*/){
1011 
          if(!p2->q1.am&&(p2->q1.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&p2->q1.reg==r){
1012 
            if(o||!ISCHWORD(q1typ(p2))) break;
1013 
            o=&p2->q1;
1014 
          }
1015 
          if(!p2->q2.am&&(p2->q2.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&p2->q2.reg==r){
1016 
            break; /*TODO: check what is possible */
1017 
            if(o||!ISCHWORD(q2typ(p2))) break;
1018 
            o=&p2->q2;
1019 
          }
1020 
          if(!p2->z.am&&(p2->z.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&p2->z.reg==r){
1021 
            break; /*TODO: check what is possible */
1022 
            if(o||!ISCHWORD(ztyp(p2))) break;
1023 
            o=&p2->z;
1024 
          }
1025 
        }
1026 
        if(c2==FREEREG||(p2->z.flags&(REG|DREFOBJ))==REG){
1027 
          int m;
1028 
          if(c2==FREEREG)
1029 
            m=p2->q1.reg;
1030 
          else
1031 
            m=p2->z.reg;
1032 
          if(m==r){
1033 
            if(o){
1034 
              o->am=am=mymalloc(sizeof(*am));
1035 
              am->flags=ACC_IND;
1036 
              am->base=base;
1037 
              if(idx!=acc) ierror(0);
1038 
              am->offset=idx;
1039 
              if(isreg(q1)){
1040 
                p->code=c=NOP;p->q1.flags=p->q2.flags=p->z.flags=0;
1041 
              }else{
1042 
                p->code=c=ASSIGN;p->q2.flags=0;
1043 
                p->typf=p->typf2;p->q2.val.vmax=sizetab[p->typf2&NQ];
1044 
              }
1045 
            }
1046 
            break;
1047 
          }
1048 
          if(c2!=FREEREG&&m==base) break;
1049 
          continue;
1050 
        }
1051 
        /* better no instructions between, accu used too much */
1052 
        if(c2!=FREEREG&&c2!=ALLOCREG&&!o) break;
1053 
      }
1054 
    }
1055 
    /* POST_INC/DEC in q1 */
1056 
    if(!p->q1.am&&(p->q1.flags&(REG|DREFOBJ))==(REG|DREFOBJ)){
1057 
      r=p->q1.reg; t=q1typ(p);
1058 
      if(ISCHWORD(t)&&ISIDX(r)&&(!(p->q2.flags&REG)||p->q2.reg!=r)&&(!(p->z.flags&REG)||p->z.reg!=r)){
1059 
        for(p2=p->next;p2;p2=p2->next){
1060 
          c2=p2->code;
1061 
          if((c2==ADD||c2==ADDI2P||(CPU==6812&&(c2==SUB||c2==SUBIFP)))&&(p2->q1.flags&(REG|DREFOBJ))==REG&&(p2->z.flags&(REG|DREFOBJ))==REG&&p2->q1.reg==r&&p2->z.reg==r&&(p2->q2.flags&(KONST|DREFOBJ))==KONST){
1062 
            eval_const(&p2->q2.val,p2->typf2);
1063 
            if(c2==SUB||c2==SUBIFP) vmax=zmsub(l2zm(0L),vmax);
1064 
            if(zmleq(vmax,incmax)&&zmleq(incmin,vmax)){
1065 
              p2->code=NOP;
1066 
              p2->q1.flags=p2->q2.flags=p2->z.flags=0;
1067 
              p->q1.am=mymalloc(sizeof(*am));
1068 
              p->q1.am->base=r;
1069 
              p->q1.am->v=0;
1070 
              if(zmleq(vmax,l2zm(0L))){
1071 
                p->q1.am->flags=POST_DEC;
1072 
                p->q1.am->offset=-zm2l(vmax);
1073 
              }else{
1074 
                p->q1.am->flags=POST_INC;
1075 
                p->q1.am->offset=zm2l(vmax);
1076 
              }
1077 
            }else break;
1078 
          }
1079 
          if(c2==CALL||c2==LABEL||(c2>=BEQ&&c2<=BRA)) break;
1080 
          if(((p2->q1.flags&REG)&&p2->q1.reg==r)||((p2->q2.flags&REG)&&p2->q2.reg==r)||((p2->z.flags&REG)&&p2->z.reg==r)) break;
1081 
        }
1082 
      }
1083 
    }
1084 
    /* POST_INC/DEC in q2 */
1085 
    if(!p->q2.am&&(p->q2.flags&(REG|DREFOBJ))==(REG|DREFOBJ)){
1086 
      r=p->q2.reg; t=q2typ(p);
1087 
      if(ISCHWORD(t)&&ISIDX(r)&&(!(p->q1.flags&REG)||p->q1.reg!=r)&&(!(p->z.flags&REG)||p->z.reg!=r)){
1088 
        for(p2=p->next;p2;p2=p2->next){
1089 
          c2=p2->code;
1090 
          if((c2==ADD||c2==ADDI2P||(CPU==6812&&(c2==SUB||c2==SUBIFP)))&&(p2->q1.flags&(REG|DREFOBJ))==REG&&(p2->z.flags&(REG|DREFOBJ))==REG&&p2->q1.reg==r&&p2->z.reg==r&&(p2->q2.flags&(KONST|DREFOBJ))==KONST){
1091 
            eval_const(&p2->q2.val,p2->typf2);
1092 
            if(c2==SUB||c2==SUBIFP) vmax=zmsub(l2zm(0L),vmax);
1093 
            if(zmleq(vmax,incmax)&&zmleq(incmin,vmax)){
1094 
              p2->code=NOP;
1095 
              p2->q1.flags=p2->q2.flags=p2->z.flags=0;
1096 
              p->q2.am=mymalloc(sizeof(*am));
1097 
              p->q2.am->base=r;
1098 
              p->q2.am->v=0;
1099 
              if(zmleq(vmax,l2zm(0L))){
1100 
                p->q2.am->flags=POST_DEC;
1101 
                p->q2.am->offset=-zm2l(vmax);
1102 
              }else{
1103 
                p->q2.am->flags=POST_INC;
1104 
                p->q2.am->offset=zm2l(vmax);
1105 
              }
1106 
            }else break;
1107 
          }
1108 
          if(c2==CALL||c2==LABEL||(c2>=BEQ&&c2<=BRA)) break;
1109 
          if(((p2->q1.flags&REG)&&p2->q1.reg==r)||((p2->q2.flags&REG)&&p2->q2.reg==r)||((p2->z.flags&REG)&&p2->z.reg==r)) break;
1110 
        }
1111 
      }
1112 
    }
1113 
    /* POST_INC/DEC in z */
1114 
    if(!p->z.am&&(p->z.flags&(REG|DREFOBJ))==(REG|DREFOBJ)){
1115 
      r=p->z.reg; t=ztyp(p);
1116 
      if(ISCHWORD(t)&&ISIDX(r)&&(!(p->q1.flags&REG)||p->q1.reg!=r)&&(!(p->q2.flags&REG)||p->q2.reg!=r)){
1117 
        for(p2=p->next;p2;p2=p2->next){
1118 
          c2=p2->code;
1119 
          if((c2==ADD||c2==ADDI2P||(CPU==6812&&(c2==SUB||c2==SUBIFP)))&&(p2->q1.flags&(REG|DREFOBJ))==REG&&(p2->z.flags&(REG|DREFOBJ))==REG&&p2->q1.reg==r&&p2->z.reg==r&&(p2->q2.flags&(KONST|DREFOBJ))==KONST){
1120 
            eval_const(&p2->q2.val,p2->typf2);
1121 
            if(c2==SUB||c2==SUBIFP) vmax=zmsub(l2zm(0L),vmax);
1122 
            if(zmleq(vmax,incmax)&&zmleq(incmin,vmax)){
1123 
              p2->code=NOP;
1124 
              p2->q1.flags=p2->q2.flags=p2->z.flags=0;
1125 
              p->z.am=mymalloc(sizeof(*am));
1126 
              p->z.am->base=r;
1127 
              p->z.am->v=0;
1128 
              if(zmleq(vmax,l2zm(0L))){
1129 
                p->z.am->flags=POST_DEC;
1130 
                p->z.am->offset=-zm2l(vmax);
1131 
              }else{
1132 
                p->z.am->flags=POST_INC;
1133 
                p->z.am->offset=zm2l(vmax);
1134 
              }
1135 
            }else break;
1136 
          }
1137 
          if(c2==CALL||c2==LABEL||(c2>=BEQ&&c2<=BRA)) break;
1138 
          if(((p2->q1.flags&REG)&&p2->q1.reg==r)||((p2->q2.flags&REG)&&p2->q2.reg==r)||((p2->z.flags&REG)&&p2->z.reg==r)) break;
1139 
        }
1140 
      }
1141 
    }
1142 
 
1143 
    /* R,#c */
1144 
    if((c==ADDI2P||c==SUBIFP)&&ISHWORD(p->typf)&&((p->typf2&NQ)==NPOINTER||(p->typf2&NQ)==FPOINTER)&&isreg(z)&&((p->q2.flags&(KONST|DREFOBJ))==KONST||(!drel&&(p->q1.flags&VARADR)))){
1145 
      int base;zmax of;struct obj *o;struct Var *v;
1146 
      if(p->q1.flags&VARADR){
1147 
        v=p->q1.v;
1148 
        of=p->q1.val.vmax;
1149 
        r=p->z.reg;
1150 
        if(isreg(q2)&&ISIDX(p->q2.reg))
1151 
          base=p->q2.reg;
1152 
        else
1153 
          base=r;
1154 
      }else{
1155 
        eval_const(&p->q2.val,p->typf);
1156 
        if(c==SUBIFP) of=zmsub(l2zm(0L),vmax); else of=vmax;
1157 
        v=0;
1158 
        r=p->z.reg;
1159 
        if(isreg(q1)&&ISIDX(p->q1.reg)) base=p->q1.reg; else base=r;
1160 
      }
1161 
      o=0;
1162 
      for(p2=p->next;p2;p2=p2->next){
1163 
        c2=p2->code;
1164 
        if(c2==CALL||c2==LABEL||(c2>=BEQ&&c2<=BRA)) break;
1165 
        if(c2!=FREEREG&&(p2->q1.flags&(REG|DREFOBJ))==REG&&p2->q1.reg==r) break;
1166 
        if(c2!=FREEREG&&(p2->q2.flags&(REG|DREFOBJ))==REG&&p2->q2.reg==r) break;
1167 
        if(c2!=CALL&&(c2<LABEL||c2>BRA)/*&&c2!=ADDRESS*/){
1168 
          if(!p2->q1.am&&(p2->q1.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&p2->q1.reg==r){
1169 
            if(o||!ISHWORD(q1typ(p2))) break;
1170 
            o=&p2->q1;
1171 
          }
1172 
          if(!p2->q2.am&&(p2->q2.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&p2->q2.reg==r){
1173 
            if(o||!ISHWORD(q2typ(p2))) break;
1174 
            o=&p2->q2;
1175 
          }
1176 
          if(!p2->z.am&&(p2->z.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&p2->z.reg==r){
1177 
            if(o||!ISHWORD(ztyp(p2))) break;
1178 
            o=&p2->z;
1179 
          }
1180 
        }
1181 
        if(c2==FREEREG||(p2->z.flags&(REG|DREFOBJ))==REG){
1182 
          int m;
1183 
          if(c2==FREEREG)
1184 
            m=p2->q1.reg;
1185 
          else
1186 
            m=p2->z.reg;
1187 
          if(m==r){
1188 
            if(o){
1189 
              o->am=am=mymalloc(sizeof(*am));
1190 
              am->flags=IMM_IND;
1191 
              am->base=base;
1192 
              am->offset=zm2l(of);
1193 
              am->v=v;
1194 
              if(!v){
1195 
                if(isreg(q1)&&ISIDX(p->q1.reg)){
1196 
                  p->code=c=NOP;p->q1.flags=p->q2.flags=p->z.flags=0;
1197 
                }else{
1198 
                  p->code=c=ASSIGN;p->q2.flags=0;
1199 
                  p->typf=p->typf2;p->q2.val.vmax=sizetab[p->typf2&NQ];
1200 
                }
1201 
              }else{
1202 
                if(isreg(q2)&&ISIDX(p->q2.reg)){
1203 
                  p->code=c=NOP;p->q1.flags=p->q2.flags=p->z.flags=0;
1204 
                }else{
1205 
                  p->code=c=ASSIGN;p->q1=p->q2;p->q2.flags=0;
1206 
                  p->q2.val.vmax=sizetab[p->typf&NQ];
1207 
                }
1208 
              }
1209 
            }
1210 
            break;
1211 
          }
1212 
          if(/*get_reg!! c2!=FREEREG&&*/m==base) break;
1213 
          continue;
1214 
        }
1215 
      }
1216 
    }
1217 
  }
1218 
}
1219 
 
1220 
static struct obj *cam(int flags,int base,long offset,struct Var *v)
1221 
/*  Initializes an addressing-mode structure and returns a pointer to   */
1222 
/*  that object. Will not survive a second call!                        */
1223 
{
1224 
  static struct obj obj;
1225 
  static struct AddressingMode am;
1226 
  obj.am=&am;
1227 
  am.flags=flags;
1228 
  am.base=base;
1229 
  am.offset=offset;
1230 
  am.v=v;
1231 
  return &obj;
1232 
}
1233 
 
1234 
static void get_acc(FILE *f,struct IC *p)
1235 
{
1236 
  if(regs[acc]){
1237 
    if(p->q2.am)
1238 
      if(p->q2.am->flags==ACC_IND) ierror(0);
1239 
    else
1240 
      if((p->q2.flags&REG)&&ISACC(p->q2.reg)) ierror(0);
1241 
    if(p->z.am)
1242 
      if(p->z.am->flags==ACC_IND) ierror(0);
1243 
    else
1244 
      if((p->z.flags&REG)&&ISACC(p->z.reg)) ierror(0);
1245 
    if(regs[acc]){
1246 
      emit(f,SPUSHD);
1247 
      push(2);
1248 
      pushed_acc=1;
1249 
    }
1250 
  }
1251 
}
1252 
static int get_idx(FILE *f,IC *p)
1253 
{
1254 
  int r;
1255 
  for(r=1;r<=MAXR;r++){
1256 
    if(ISIDX(r)){
1257 
      if(!regs[r]){
1258 
        regs[r]|=4;
1259 
        return r;
1260 
      }
1261 
    }
1262 
  }
1263 
  for(r=1;r<=MAXR;r++){
1264 
    if(ISIDX(r)){
1265 
      if((!(p->q1.flags&REG)||p->q1.reg!=r)&&
1266 
         (!(p->q2.flags&REG)||p->q2.reg!=r)&&
1267 
         (!(p->z.flags&REG)||p->z.reg!=r)){
1268 
        emit(f,"\t%s%s\n",CPU==6812?"psh":"pshs\t",regnames[r]);
1269 
        regs[r]|=8;
1270 
        push(2);
1271 
        return r;
1272 
      }
1273 
    }
1274 
  }
1275 
  ierror(0);
1276 
}
1277 
static int get_reg(FILE *f,struct IC *p,int t)
1278 
{
1279 
  int reg;
1280 
  if(!regs[acc])
1281 
    reg=acc;
1282 
  else if(ISHWORD(t)&&!regs[ix])
1283 
    reg=ix;
1284 
#if 0
1285 
  else if(ISHWORD(t)&&!regs[iy])
1286 
    reg=iy;
1287 
#endif
1288 
  else{
1289 
    get_acc(f,p);
1290 
    reg=acc;
1291 
  }
1292 
  BSET(regs_modified,reg);
1293 
  return reg;
1294 
}
1295 
static void load_reg(FILE *f,int r,struct obj *o,int t)
1296 
{
1297 
  if(!o->am){
1298 
    if((o->flags&(REG|DREFOBJ))==REG){
1299 
      if(o->reg==r) return;
1300 
      emit(f,"\ttfr\t%s,%s\n",regnames[o->reg],regnames[r]);
1301 
      return;
1302 
    }
1303 
    if(r==acc&&(o->flags&(KONST|DREFOBJ))==KONST){
1304 
      eval_const(&o->val,t);
1305 
      if(zmeqto(vmax,l2zm(0L))&&zumeqto(vumax,ul2zum(0UL))){
1306 
        if(CPU!=6812&&!optsize)
1307 
          emit(f,"\tldd\t#0\n");
1308 
        else
1309 
          emit(f,"\tclra\n\tclrb\n");
1310 
        cc=o;cc_t=t;
1311 
        return;
1312 
      }
1313 
    }
1314 
  }
1315 
  if(o->flags&VARADR){
1316 
    char *base=0;
1317 
    if(pcrel&&ISFUNC(o->v->vtyp->flags))
1318 
      base="pc";
1319 
    if(drel&&!ISFUNC(o->v->vtyp->flags))
1320 
      base=regnames[iu];
1321 
    if(base&&!skip_rel){
1322 
      if(ISACC(r))
1323 
        emit(f,"\ttfr\t%s,d\n",base);
1324 
      if(ISIDX(r))
1325 
        emit(f,"\tlea%s\t",regnames[r]);
1326 
      else{
1327 
        if(*base=='p') emit(f,"%s%d:\n",labprefix,++label);
1328 
        emit(f,"\taddd\t#");
1329 
      }
1330 
      emitzm(f,o->val.vmax);
1331 
      emit(f,"+");
1332 
      if(o->v->storage_class==EXTERN)
1333 
        emit(f,"%s%s",idprefix,o->v->identifier);
1334 
      else
1335 
        emit(f,"%s%ld",labprefix,zm2l(o->v->offset));
1336 
      if(ISIDX(r))
1337 
        emit(f,",%s",base);
1338 
      else if(*base=='p')
1339 
        emit(f,"-%s%d",labprefix,label);
1340 
      emit(f,"\n");
1341 
      cc=o;cc_t=t;
1342 
      return;
1343 
    }
1344 
    skip_rel=0;
1345 
  }
1346 
  emit(f,"\tld%s\t",(r==acc&&(t&NQ)==CHAR)?(CPU==6812?"ab":"b"):regnames[r]);
1347 
  emit_obj(f,o,t);emit(f,"\n");
1348 
  cc=o;cc_t=t;
1349 
}
1350 
static void store_reg(FILE *f,int r,struct obj *o,int t)
1351 
{
1352 
  if((o->flags&(REG|DREFOBJ))==REG){
1353 
    if(o->reg==r) return;
1354 
    emit(f,"\ttfr\t%s,%s\n",regnames[r],regnames[o->reg]);
1355 
  }else{
1356 
    if(r==acc&&(t&NQ)==CHAR)
1357 
      emit(f,"\tst%s\t",(CPU==6812)?"ab":"b");
1358 
    else
1359 
      emit(f,"\tst%s\t",regnames[r]);
1360 
    emit_obj(f,o,t);emit(f,"\n");
1361 
    cc=o;cc_t=t;
1362 
  }
1363 
}
1364 
static void load_addr(FILE *f,int r,struct obj *o)
1365 
{
1366 
  if(o->am){
1367 
    if(o->am->flags==IMM_IND){
1368 
      if(o->am->base==r&&o->am->offset==0&&!o->am->v) return;
1369 
      if(ISIDX(r)){
1370 
        emit(f,"\tlea%s\t",regnames[r]);
1371 
        emit_obj(f,o,0);
1372 
        emit(f,"\n");
1373 
      }else{
1374 
        if(r!=acc) ierror(0);
1375 
        emit(f,"\ttfr\t%s,%s\n",regnames[o->am->base],regnames[r]);
1376 
        emit(f,"\taddd\t#%ld\n",o->am->offset);
1377 
        if(o->am->v){
1378 
          if(o->am->v->storage_class==STATIC)
1379 
            emit(f,"+%s%ld",labprefix,zm2l(o->am->v->offset));
1380 
          else
1381 
            emit(f,"+%s%s",idprefix,o->am->v->identifier);
1382 
        }
1383 
        emit(f,"\n");
1384 
        cc=0;
1385 
      }
1386 
      return;
1387 
    }
1388 
    ierror(0);
1389 
  }
1390 
  if(o->flags&DREFOBJ){
1391 
    o->flags&=~DREFOBJ;
1392 
    load_reg(f,r,o,o->dtyp);
1393 
    o->flags|=DREFOBJ;
1394 
    return;
1395 
  }
1396 
  if((o->flags&(VAR|VARADR))==VAR){
1397 
    if(o->v->storage_class==STATIC||o->v->storage_class==EXTERN){
1398 
      o->flags|=VARADR;
1399 
      load_reg(f,r,o,POINTER_TYPE(o->v->vtyp));
1400 
      o->flags&=~VARADR;
1401 
      return;
1402 
    }
1403 
    if(voff(o)==0){
1404 
      emit(f,"\ttfr\t%s,%s\n",regnames[sp],regnames[r]);
1405 
      return;
1406 
    }
1407 
    if(ISIDX(r)){
1408 
      emit(f,"\tlea%s\t",regnames[r]);
1409 
      emit_obj(f,o,0);
1410 
      emit(f,"\n");
1411 
    }else{
1412 
      if(r!=acc) ierror(0);
1413 
      emit(f,"\ttfr\t%s,%s\n",regnames[sp],regnames[r]);
1414 
      emit(f,"\taddd\t#%ld\n",voff(o));
1415 
      cc=0;
1416 
    }
1417 
    return;
1418 
  }
1419 
  ierror(0);
1420 
}
1421 
 
1422 
static int scratchreg(int r,struct IC *p)
1423 
{
1424 
  int c;
1425 
  while(1){
1426 
    p=p->next;
1427 
    if(!p||((c=p->code)==FREEREG&&p->q1.reg==r)) return 1;
1428 
    if(c==CALL||(c>=BEQ&&c<=BRA)) return 0;
1429 
    if((p->q1.flags&REG)&&p->q1.reg==r) return 0;
1430 
    if((p->q2.flags&REG)&&p->q2.reg==r) return 0;
1431 
    if((p->z.flags&REG)&&p->z.reg==r) return 0;
1432 
  }
1433 
}
1434 
 
1435 
/****************************************/
1436 
/*  End of private fata and functions.  */
1437 
/****************************************/
1438 
 
1439 
 
1440 
int init_cg(void)
1441 
/*  Does necessary initializations for the code-generator. Gets called  */
1442 
/*  once at the beginning and should return 0 in case of problems.      */
1443 
{
1444 
  int i;
1445 
 
1446 
  CPU=CPUOPT;
1447 
 
1448 
        if (CPU==680912) {
1449 
                bitsperbyte = 12;
1450 
                bytemask = 0xfff;
1451 
                dbl_bytemask = 0xffffff;
1452 
        }
1453 
 
1454 
  /*  Initialize some values which cannot be statically initialized   */
1455 
  /*  because they are stored in the target's arithmetic.             */
1456 
  maxalign=l2zm(1L);
1457 
  char_bit=l2zm((long)bitsperbyte);
1458 
  for(i=0;i<=MAX_TYPE;i++){
1459 
    sizetab[i]=l2zm(msizetab[i]);
1460 
    align[i]=l2zm(malign[i]);
1461 
  }
1462 
  for(i=1;i<=iu;i++){
1463 
    regsize[i]=l2zm(2L);regtype[i]=&ityp;
1464 
  }
1465 
  regsize[dx]=l2zm(4L);regtype[i]=&ltyp;
1466 
 
1467 
  /*  Initialize the min/max-settings. Note that the types of the     */
1468 
  /*  host system may be different from the target system and you may */
1469 
  /*  only use the smallest maximum values ANSI guarantees if you     */
1470 
  /*  want to be portable.                                            */
1471 
  /*  That's the reason for the subtraction in t_min[INT]. Long could */
1472 
  /*  be unable to represent -2147483648 on the host system.          */
1473 
  if (CPU==680912) {
1474 
          t_min[CHAR]=l2zm(-2048L);
1475 
          t_min[SHORT]=l2zm(-8388608L);
1476 
          t_min[INT]=t_min[SHORT];
1477 
          t_min[LONG]=zmsub(l2zm(0x800000000000LL),l2zm(1L));
1478 
          t_min[LLONG]=zmlshift(l2zm(1L),l2zm(63L));
1479 
          t_min[MAXINT]=t_min(LLONG);
1480 
          t_max[CHAR]=ul2zum(2047L);
1481 
          t_max[SHORT]=ul2zum(8388607UL);
1482 
          t_max[INT]=t_max[SHORT];
1483 
          t_max[LONG]=ul2zum(0x7fffffffffffULL);
1484 
          t_max[LLONG]=zumrshift(zumkompl(ul2zum(0UL)),ul2zum(1UL));
1485 
          t_max[MAXINT]=t_max(LLONG);
1486 
          tu_max[CHAR]=ul2zum(4095UL);
1487 
          tu_max[SHORT]=ul2zum(16777215UL);
1488 
          tu_max[INT]=tu_max[SHORT];
1489 
          tu_max[LONG]=ul2zum(0xffffffffffffULL);
1490 
          tu_max[LLONG]=zumkompl(ul2zum(0UL));
1491 
          tu_max[MAXINT]=t_max(UNSIGNED|LLONG);
1492 
        }
1493 
        else {
1494 
          t_min[CHAR]=l2zm(-128L);
1495 
          t_min[SHORT]=l2zm(-32768L);
1496 
          t_min[INT]=t_min[SHORT];
1497 
          t_min[LONG]=zmsub(l2zm(-2147483647L),l2zm(1L));
1498 
          t_min[LLONG]=zmlshift(l2zm(1L),l2zm(63L));
1499 
          t_min[MAXINT]=t_min(LLONG);
1500 
          t_max[CHAR]=ul2zum(127L);
1501 
          t_max[SHORT]=ul2zum(32767UL);
1502 
          t_max[INT]=t_max[SHORT];
1503 
          t_max[LONG]=ul2zum(2147483647UL);
1504 
          t_max[LLONG]=zumrshift(zumkompl(ul2zum(0UL)),ul2zum(1UL));
1505 
          t_max[MAXINT]=t_max(LLONG);
1506 
          tu_max[CHAR]=ul2zum(255UL);
1507 
          tu_max[SHORT]=ul2zum(65535UL);
1508 
          tu_max[INT]=tu_max[SHORT];
1509 
          tu_max[LONG]=ul2zum(4294967295UL);
1510 
          tu_max[LLONG]=zumkompl(ul2zum(0UL));
1511 
          tu_max[MAXINT]=t_max(UNSIGNED|LLONG);
1512 
        }
1513 
 
1514 
  if(g_flags[9]&USEDFLAG) drel=1;
1515 
  if(g_flags[10]&USEDFLAG) MINADDI2P=SHORT;
1516 
  if(g_flags[11]&USEDFLAG) nodx=1;
1517 
  if(g_flags[12]&USEDFLAG) nou=1;
1518 
 
1519 
  if(CPU==6812) switchsubs=1;
1520 
 
1521 
  /*  Reserve a few registers for use by the code-generator.      */
1522 
  regsa[sp]=REGSA_NEVER;
1523 
  regscratch[sp]=0;
1524 
 
1525 
  if(CPU==6812||drel||nou){
1526 
    regsa[iu]=REGSA_NEVER;
1527 
    regscratch[iu]=0;
1528 
  }
1529 
 
1530 
  if(CPU!=6812){
1531 
    regnames[sp]="s";
1532 
    logicals[0]="or";
1533 
  }
1534 
 
1535 
  if(!(g_flags[6]&USEDFLAG)){
1536 
    extern int static_cse,dref_cse;
1537 
    static_cse=0;
1538 
    dref_cse=0;
1539 
  }
1540 
 
1541 
  if(!(g_flags[7]&USEDFLAG)){
1542 
    regsa[acc]=REGSA_TEMPS;
1543 
    regsa[dx]=REGSA_TEMPS;
1544 
  }
1545 
 
1546 
  if(g_flags[8]&USEDFLAG){
1547 
    pcrel=1;
1548 
    jsrinst="lbsr";
1549 
    jmpinst="lbra";
1550 
    rodataname="\t.data\n";
1551 
  }
1552 
 
1553 
  if(CPU==6809)
1554 
    marray[1]="__6809__";
1555 
  if(CPU==6309)
1556 
    marray[1]="__6309__";
1557 
  if(CPU==680912)
1558 
    marray[1]="__680912__";
1559 
  target_macros=marray;
1560 
 
1561 
 
1562 
  declare_builtin("__mulint16",INT,INT,acc,INT,0,1,0);
1563 
  declare_builtin("__divint16",INT,INT,ix,INT,acc,1,0);
1564 
  declare_builtin("__divuint16",UNSIGNED|INT,UNSIGNED|INT,ix,UNSIGNED|INT,acc,1,0);
1565 
  declare_builtin("__modint16",INT,INT,ix,INT,acc,1,0);
1566 
  declare_builtin("__moduint16",UNSIGNED|INT,UNSIGNED|INT,ix,UNSIGNED|INT,acc,1,0);
1567 
 
1568 
 
1569 
  /* TODO: set argument registers */
1570 
  declare_builtin("__mulint32",LONG,LONG,0,LONG,0,1,0);
1571 
  declare_builtin("__addint32",LONG,LONG,0,LONG,0,1,0);
1572 
  declare_builtin("__subint32",LONG,LONG,0,LONG,0,1,0);
1573 
  declare_builtin("__andint32",LONG,LONG,0,LONG,0,1,0);
1574 
  declare_builtin("__orint32",LONG,LONG,0,LONG,0,1,0);
1575 
  declare_builtin("__eorint32",LONG,LONG,0,LONG,0,1,0);
1576 
  declare_builtin("__negint32",LONG,LONG,0,0,0,1,0);
1577 
  declare_builtin("__lslint32",LONG,LONG,0,INT,0,1,0);
1578 
 
1579 
  declare_builtin("__divint32",LONG,LONG,0,LONG,0,1,0);
1580 
  declare_builtin("__divuint32",UNSIGNED|LONG,UNSIGNED|LONG,0,UNSIGNED|LONG,0,1,0);
1581 
  declare_builtin("__modint32",LONG,LONG,0,LONG,0,1,0);
1582 
  declare_builtin("__moduint32",UNSIGNED|LONG,UNSIGNED|LONG,0,UNSIGNED|LONG,0,1,0);
1583 
  declare_builtin("__lsrsint32",LONG,LONG,0,INT,0,1,0);
1584 
  declare_builtin("__lsruint32",UNSIGNED|LONG,UNSIGNED|LONG,0,INT,0,1,0);
1585 
  declare_builtin("__cmpsint32",INT,LONG,0,LONG,0,1,0);
1586 
  declare_builtin("__cmpuint32",INT,UNSIGNED|LONG,0,UNSIGNED|LONG,0,1,0);
1587 
  declare_builtin("__sint32toflt32",FLOAT,LONG,0,0,0,1,0);
1588 
  declare_builtin("__uint32toflt32",FLOAT,UNSIGNED|LONG,0,0,0,1,0);
1589 
  declare_builtin("__sint32toflt64",DOUBLE,LONG,0,0,0,1,0);
1590 
  declare_builtin("__uint32toflt64",DOUBLE,UNSIGNED|LONG,0,0,0,1,0);
1591 
  declare_builtin("__flt32tosint32",LONG,FLOAT,0,0,0,1,0);
1592 
  declare_builtin("__flt32touint32",UNSIGNED|LONG,FLOAT,0,0,0,1,0);
1593 
  declare_builtin("__flt64tosint32",LONG,DOUBLE,0,0,0,1,0);
1594 
  declare_builtin("__flt64touint32",UNSIGNED|LONG,DOUBLE,0,0,0,1,0);
1595 
 
1596 
 
1597 
 
1598 
  declare_builtin("__mulint64",LLONG,LLONG,0,LLONG,0,1,0);
1599 
  declare_builtin("__addint64",LLONG,LLONG,0,LLONG,0,1,0);
1600 
  declare_builtin("__subint64",LLONG,LLONG,0,LLONG,0,1,0);
1601 
  declare_builtin("__andint64",LLONG,LLONG,0,LLONG,0,1,0);
1602 
  declare_builtin("__orint64",LLONG,LLONG,0,LLONG,0,1,0);
1603 
  declare_builtin("__eorint64",LLONG,LLONG,0,LLONG,0,1,0);
1604 
  declare_builtin("__negint64",LLONG,LLONG,0,0,0,1,0);
1605 
  declare_builtin("__lslint64",LLONG,LLONG,0,INT,0,1,0);
1606 
 
1607 
  declare_builtin("__divsint64",LLONG,LLONG,0,LLONG,0,1,0);
1608 
  declare_builtin("__divuint64",UNSIGNED|LLONG,UNSIGNED|LLONG,0,UNSIGNED|LLONG,0,1,0);
1609 
  declare_builtin("__modsint64",LLONG,LLONG,0,LLONG,0,1,0);
1610 
  declare_builtin("__moduint64",UNSIGNED|LLONG,UNSIGNED|LLONG,0,UNSIGNED|LLONG,0,1,0);
1611 
  declare_builtin("__lsrsint64",LLONG,LLONG,0,INT,0,1,0);
1612 
  declare_builtin("__lsruint64",UNSIGNED|LLONG,UNSIGNED|LLONG,0,INT,0,1,0);
1613 
  declare_builtin("__cmpsint64",INT,LLONG,0,LLONG,0,1,0);
1614 
  declare_builtin("__cmpuint64",INT,UNSIGNED|LLONG,0,UNSIGNED|LLONG,0,1,0);
1615 
  declare_builtin("__sint64toflt32",FLOAT,LLONG,0,0,0,1,0);
1616 
  declare_builtin("__uint64toflt32",FLOAT,UNSIGNED|LLONG,0,0,0,1,0);
1617 
  declare_builtin("__sint64toflt64",DOUBLE,LLONG,0,0,0,1,0);
1618 
  declare_builtin("__uint64toflt64",DOUBLE,UNSIGNED|LLONG,0,0,0,1,0);
1619 
  declare_builtin("__flt32tosint64",LLONG,FLOAT,0,0,0,1,0);
1620 
  declare_builtin("__flt32touint64",UNSIGNED|LLONG,FLOAT,0,0,0,1,0);
1621 
  declare_builtin("__flt64tosint64",LLONG,DOUBLE,0,0,0,1,0);
1622 
  declare_builtin("__flt64touint64",UNSIGNED|LLONG,DOUBLE,0,0,0,1,0);
1623 
 
1624 
  declare_builtin("__flt32toflt64",DOUBLE,FLOAT,0,0,0,1,0);
1625 
  declare_builtin("__flt64toflt32",FLOAT,DOUBLE,0,0,0,1,0);
1626 
 
1627 
 
1628 
  declare_builtin("__addflt32",FLOAT,FLOAT,0,FLOAT,0,1,0);
1629 
  declare_builtin("__subflt32",FLOAT,FLOAT,0,FLOAT,0,1,0);
1630 
  declare_builtin("__mulflt32",FLOAT,FLOAT,0,FLOAT,0,1,0);
1631 
  declare_builtin("__divflt32",FLOAT,FLOAT,0,FLOAT,0,1,0);
1632 
  declare_builtin("__negflt32",FLOAT,FLOAT,0,FLOAT,0,1,0);
1633 
  declare_builtin("__cmpflt32",INT,FLOAT,0,FLOAT,0,1,0);
1634 
 
1635 
  declare_builtin("__addflt64",DOUBLE,DOUBLE,0,DOUBLE,0,1,0);
1636 
  declare_builtin("__subflt64",DOUBLE,DOUBLE,0,DOUBLE,0,1,0);
1637 
  declare_builtin("__mulflt64",DOUBLE,DOUBLE,0,DOUBLE,0,1,0);
1638 
  declare_builtin("__divflt64",DOUBLE,DOUBLE,0,DOUBLE,0,1,0);
1639 
  declare_builtin("__negflt64",DOUBLE,DOUBLE,0,DOUBLE,0,1,0);
1640 
  declare_builtin("__cmpflt64",INT,DOUBLE,0,DOUBLE,0,1,0);
1641 
 
1642 
 
1643 
  return 1;
1644 
}
1645 
 
1646 
int freturn(struct Typ *t)
1647 
/*  Returns the register in which variables of type t are returned. */
1648 
/*  If the value cannot be returned in a register returns 0.        */
1649 
{
1650 
  int f=t->flags&NQ;
1651 
  if(ISSCALAR(f)){
1652 
    if(ISHWORD(f)||f==CHAR)
1653 
      return acc;
1654 
    else if(ISLWORD(f))
1655 
      return dx;
1656 
  }
1657 
  return 0;
1658 
}
1659 
 
1660 
int regok(int r,int t,int mode)
1661 
/*  Returns 0 if register r cannot store variables of   */
1662 
/*  type t. If t==POINTER and mode!=0 then it returns   */
1663 
/*  non-zero only if the register can store a pointer   */
1664 
/*  and dereference a pointer to mode.                  */
1665 
{
1666 
  if(!ISSCALAR(t)) return 0;
1667 
  if(r==dx){
1668 
    if(ISLWORD(t)&&(optflags&2)&&!nodx) return 1;
1669 
    return 0;
1670 
  }
1671 
  if(mode==-1){
1672 
    if(ISHWORD(t)) return 1;
1673 
    if((t&NQ)==CHAR&&ISACC(r)) return 1;
1674 
  }else{
1675 
    if(ISIDX(r)){
1676 
      if(ISPOINTER(t)&&ISHWORD(t))
1677 
        return 1;
1678 
    }
1679 
    if(ISACC(r)){
1680 
      if((t&NQ)==CHAR)
1681 
        return 1;
1682 
      if(ISINT(t)&&ISHWORD(t))
1683 
        return 1;
1684 
    }
1685 
  }
1686 
  return 0;
1687 
}
1688 
 
1689 
int reg_pair(int r,struct rpair *p)
1690 
/* Returns 0 if the register is no register pair. If r  */
1691 
/* is a register pair non-zero will be returned and the */
1692 
/* structure pointed to p will be filled with the two   */
1693 
/* elements.                                            */
1694 
{
1695 
  if(r==dx){
1696 
    p->r1=acc;
1697 
    p->r2=ix;
1698 
    return 1;
1699 
  }
1700 
  return 0;
1701 
}
1702 
 
1703 
int cost_savings(struct IC *p,int r,struct obj *o)
1704 
{
1705 
  /*FIXME*/
1706 
  int c=p->code;
1707 
  if(r==dx){
1708 
    if(c==GETRETURN||c==SETRETURN||c==PUSH||c==ASSIGN) return 8;
1709 
    return INT_MIN;
1710 
  }
1711 
  if(o->flags&VKONST){
1712 
    struct obj *co=&o->v->cobj;
1713 
    if(o->flags&DREFOBJ)
1714 
      return 0;
1715 
    if(o==&p->q1&&p->code==ASSIGN&&((p->z.flags&DREFOBJ)||p->z.v->storage_class==STATIC||p->z.v->storage_class==EXTERN)){
1716 
      return 2;
1717 
    }
1718 
    return 0;
1719 
  }
1720 
  if((o->flags&DREFOBJ)){
1721 
    if(!ISIDX(r)) return INT_MIN;
1722 
    if(p->q2.flags&&o!=&p->z)
1723 
      return 6;
1724 
    else
1725 
      return 6;
1726 
  }else if(c==GETRETURN&&p->q1.reg==r){
1727 
    return 4;
1728 
  }else if(c==SETRETURN&&p->z.reg==r){
1729 
    return 4;
1730 
  }else if(c==CONVERT&&((p->typf&NQ)==CHAR||(p->typf2&NQ)==CHAR)&&regok(r,CHAR,0)){
1731 
    return 3;
1732 
  }
1733 
  if(o==&p->z&&r==acc){
1734 
    if(c==SUB||c==SUBIFP||c==SUBPFP||c==AND||c==OR||c==XOR)
1735 
      return 6;
1736 
    if((c==ADD||c==ADDI2P)&&!(p->q1.flags&(KONST|VKONST))&&!(p->q2.flags&(KONST|VKONST)))
1737 
      return 4;
1738 
    if(c==MULT) return 5;
1739 
    if(c==ASSIGN&&(p->q1.flags&KONST)){
1740 
      eval_const(&p->q1.val,p->typf);
1741 
      if(zmeqto(vmax,l2zm(0L))&&zumeqto(vumax,ul2zum(0UL)))
1742 
        return 3;
1743 
    }
1744 
  }
1745 
#if 1
1746 
  if((o==&p->q2/*||o==&p->z*/)&&!(o->flags&DREFOBJ)&&!ISACC(o->reg)&&(c==MULT||c==DIV||c==MOD))
1747 
    return INT_MIN;
1748 
#endif
1749 
  if(c==COMPARE||c==TEST){
1750 
    if(r==ix) return 3;
1751 
    if(r==iy) return 2;
1752 
    if(r==iu) return 1;
1753 
  }
1754 
  return 2;
1755 
}
1756 
 
1757 
int dangerous_IC(struct IC *p)
1758 
/*  Returns zero if the IC p can be safely executed     */
1759 
/*  without danger of exceptions or similar things.     */
1760 
/*  vbcc may generate code in which non-dangerous ICs   */
1761 
/*  are sometimes executed although control-flow may    */
1762 
/*  never reach them (mainly when moving computations   */
1763 
/*  out of loops).                                      */
1764 
/*  Typical ICs that generate exceptions on some        */
1765 
/*  machines are:                                       */
1766 
/*      - accesses via pointers                         */
1767 
/*      - division/modulo                               */
1768 
/*      - overflow on signed integer/floats             */
1769 
{
1770 
  int c=p->code;
1771 
  if((p->q1.flags&DREFOBJ)||(p->q2.flags&DREFOBJ)||(p->z.flags&DREFOBJ))
1772 
    return 1;
1773 
  if((c==DIV||c==MOD)&&!isconst(q2))
1774 
    return 1;
1775 
  return 0;
1776 
}
1777 
 
1778 
/* Return name of library function, if this node should be
1779 
   implemented via libcall. */
1780 
char *use_libcall(int c,int t,int t2)
1781 
{
1782 
  static char fname[16];
1783 
  char *ret=0;
1784 
 
1785 
  if(c==COMPARE){
1786 
    if((t&NQ)==LLONG||ISFLOAT(t)){
1787 
      sprintf(fname,"__cmp%s%s%ld",(t&UNSIGNED)?"u":"s",ISFLOAT(t)?"flt":"int",zm2l(sizetab[t&NQ])*8);
1788 
      ret=fname;
1789 
    }
1790 
  }else{
1791 
    t&=NU;
1792 
    t2&=NU;
1793 
    if(t==LDOUBLE) t=DOUBLE;
1794 
    if(t2==LDOUBLE) t2=DOUBLE;
1795 
    if(c==CONVERT){
1796 
      if(t==t2) return 0;
1797 
      if(t==FLOAT&&t2==DOUBLE) return "__flt64toflt32";
1798 
      if(t==DOUBLE&&t2==FLOAT) return "__flt32toflt64";
1799 
 
1800 
      if(ISFLOAT(t)){
1801 
        sprintf(fname,"__%cint%ldtoflt%d",(t2&UNSIGNED)?'u':'s',zm2l(sizetab[t2&NQ])*8,(t==FLOAT)?32:64);
1802 
        ret=fname;
1803 
      }
1804 
      if(ISFLOAT(t2)){
1805 
        sprintf(fname,"__flt%dto%cint%ld",((t2&NU)==FLOAT)?32:64,(t&UNSIGNED)?'u':'s',zm2l(sizetab[t&NQ])*8);
1806 
        ret=fname;
1807 
      }
1808 
    }
1809 
    if((t&NQ)==LLONG||ISFLOAT(t)){
1810 
      if((c>=LSHIFT&&c<=MOD)||(c>=OR&&c<=AND)||c==KOMPLEMENT||c==MINUS){
1811 
        if(t==(UNSIGNED|LLONG)&&(c==DIV||c==MOD||c==RSHIFT)){
1812 
          sprintf(fname,"__%suint64",ename[c]);
1813 
          ret=fname;
1814 
        }else if((t&NQ)==LLONG){
1815 
          sprintf(fname,"__%sint64",ename[c]);
1816 
          ret=fname;
1817 
        }else if(t==(UNSIGNED|LONG)&&(c==DIV||c==MOD||c==RSHIFT)){
1818 
          sprintf(fname,"__%suint32",ename[c]);
1819 
          ret=fname;
1820 
        }else if((t&NQ)==LONG){
1821 
          sprintf(fname,"__%sint32",ename[c]);
1822 
          ret=fname;
1823 
        }else{
1824 
          sprintf(fname,"__%s%s%s%ld",ename[c],(c!=MULT&&(t&UNSIGNED))?"u":"",ISFLOAT(t)?"flt":"int",zm2l(sizetab[t&NQ])*8);
1825 
          ret=fname;
1826 
        }
1827 
      }
1828 
    }
1829 
    if((c==MULT&&(CPU==6809||(t&NQ)==LONG))||c==DIV||c==MOD){
1830 
      sprintf(fname,"__%s%s%s%ld",ename[c],(c!=MULT&&(t&UNSIGNED))?"u":"",ISFLOAT(t)?"flt":"int",zm2l(sizetab[t&NQ])*8);
1831 
      ret=fname;
1832 
    }
1833 
  }
1834 
 
1835 
  return ret;
1836 
}
1837 
 
1838 
 
1839 
 
1840 
int must_convert(int o,int t,int const_expr)
1841 
/*  Returns zero if code for converting np to type t    */
1842 
/*  can be omitted.                                     */
1843 
{
1844 
  int op=o&NQ,tp=t&NQ;
1845 
  if(op==tp) return 0;
1846 
  if(ISHWORD(op)&&ISHWORD(tp)) return 0;
1847 
  if(ISFLOAT(op)||ISFLOAT(tp)) return 1;
1848 
  if(ISLWORD(op)&&ISLWORD(tp)) return 0;
1849 
  return 1;
1850 
}
1851 
 
1852 
void gen_ds(FILE *f,zmax size,struct Typ *t)
1853 
/*  This function has to create <size> bytes of storage */
1854 
/*  initialized with zero.                              */
1855 
{
1856 
  if(newobj&&section!=SPECIAL)
1857 
    emit(f,"%ld\n",zm2l(size));
1858 
  else
1859 
    emit(f,"\t.space\t%ld\n",zm2l(size));
1860 
  newobj=0;
1861 
}
1862 
 
1863 
void gen_align(FILE *f,zmax align)
1864 
/*  This function has to make sure the next data is     */
1865 
/*  aligned to multiples of <align> bytes.              */
1866 
{
1867 
  /* nothing to do */
1868 
}
1869 
 
1870 
void gen_var_head(FILE *f,struct Var *v)
1871 
/*  This function has to create the head of a variable  */
1872 
/*  definition, i.e. the label and information for      */
1873 
/*  linkage etc.                                        */
1874 
{
1875 
  int constflag;
1876 
  if(v->clist) constflag=is_const(v->vtyp);
1877 
  if(v->storage_class==STATIC){
1878 
    if(ISFUNC(v->vtyp->flags)) return;
1879 
    if(v->tattr&DPAGE)
1880 
      emit(f,"\t.direct\t%s%ld\n",labprefix,zm2l(v->offset));
1881 
    if(!special_section(f,v)){
1882 
      if(v->clist&&(!constflag||(g_flags[3]&USEDFLAG))&&section!=DATA){
1883 
        emit(f,dataname);if(f) section=DATA;
1884 
      }
1885 
      if(v->clist&&constflag&&!(g_flags[3]&USEDFLAG)&&section!=RODATA){
1886 
        emit(f,rodataname);if(f) section=RODATA;
1887 
      }
1888 
      if(!v->clist&&section!=BSS){
1889 
        emit(f,bssname);if(f) section=BSS;
1890 
      }
1891 
    }
1892 
    emit(f,"\t.type\t%s%ld,@object\n",labprefix,zm2l(v->offset));
1893 
    emit(f,"\t.size\t%s%ld,%ld\n",labprefix,zm2l(v->offset),zm2l(szof(v->vtyp)));
1894 
    if(v->clist||section==SPECIAL)
1895 
      emit(f,"%s%ld:\n",labprefix,zm2l(v->offset));
1896 
    else
1897 
      emit(f,"\t.lcomm\t%s%ld,",labprefix,zm2l(v->offset));
1898 
    newobj=1;
1899 
  }
1900 
  if(v->storage_class==EXTERN){
1901 
    if(v->flags&(DEFINED|TENTATIVE)){
1902 
      emit(f,"\t.global\t%s%s\n",idprefix,v->identifier);
1903 
      if(v->tattr&DPAGE)
1904 
        emit(f,"\t.direct\t%s%s\n",idprefix,v->identifier);
1905 
      if(!special_section(f,v)){
1906 
        if(v->clist&&(!constflag||(g_flags[3]&USEDFLAG))&&section!=DATA){
1907 
          emit(f,dataname);if(f) section=DATA;
1908 
        }
1909 
        if(v->clist&&constflag&&!(g_flags[3]&USEDFLAG)&&section!=RODATA){
1910 
          emit(f,rodataname);if(f) section=RODATA;
1911 
        }
1912 
        if(!v->clist&&section!=BSS){
1913 
          emit(f,bssname);if(f) section=BSS;
1914 
        }
1915 
      }
1916 
      emit(f,"\t.type\t%s%s,@object\n",idprefix,v->identifier);
1917 
      emit(f,"\t.size\t%s%s,%ld\n",idprefix,v->identifier,zm2l(szof(v->vtyp)));
1918 
      if(v->clist||section==SPECIAL)
1919 
        emit(f,"%s%s:\n",idprefix,v->identifier);
1920 
      else
1921 
        emit(f,"\t.global\t%s%s\n\t.lcomm\t%s%s,",idprefix,v->identifier,idprefix,v->identifier);
1922 
      newobj=1;
1923 
    }
1924 
  }
1925 
}
1926 
 
1927 
void gen_dc(FILE *f,int t,struct const_list *p)
1928 
/*  This function has to create static storage          */
1929 
/*  initialized with const-list p.                      */
1930 
{
1931 
  emit(f,"\t%s\t",dct[t&NQ]);
1932 
  if(!p->tree){
1933 
    if(ISFLOAT(t)){
1934 
      /*  auch wieder nicht sehr schoen und IEEE noetig   */
1935 
      unsigned char *ip;
1936 
      ip=(unsigned char *)&p->val.vdouble;
1937 
      emit(f,"0x%02x%02x%02x%02x",ip[3],ip[2],ip[1],ip[0]);
1938 
      if((t&NQ)==DOUBLE||(t&NQ)==LDOUBLE){
1939 
        emit(f,",0x%02x%02x%02x%02x",ip[7],ip[6],ip[5],ip[4]);
1940 
      }
1941 
    }else{
1942 
      emitval(f,&p->val,(t&NU)|UNSIGNED);
1943 
    }
1944 
  }else{
1945 
    int m=p->tree->o.flags,md=drel,mp=pcrel;
1946 
    p->tree->o.flags&=~VARADR;
1947 
    drel=0;pcrel=0;
1948 
    emit_obj(f,&p->tree->o,t&NU);
1949 
    p->tree->o.flags=m;
1950 
    drel=md;pcrel=mp;
1951 
  }
1952 
  emit(f,"\n");newobj=0;
1953 
}
1954 
 
1955 
 
1956 
static void preload(FILE *f,IC *p)
1957 
{
1958 
  int t,r;
1959 
 
1960 
  if((p->typf&VOLATILE)||(p->typf2&VOLATILE)||
1961 
     ((p->q1.flags&DREFOBJ)&&(p->q1.dtyp&(VOLATILE|PVOLATILE)))||
1962 
     ((p->q2.flags&DREFOBJ)&&(p->q2.dtyp&(VOLATILE|PVOLATILE)))||
1963 
     ((p->z.flags&DREFOBJ)&&(p->z.dtyp&(VOLATILE|PVOLATILE))))
1964 
    emit(f,"; volatile barrier\n");
1965 
 
1966 
  t=q1typ(p);
1967 
  if(!p->q1.am&&(p->q1.flags&(REG|DREFOBJ|KONST))==DREFOBJ&&ISLWORD(t)){
1968 
    r=get_idx(f,p);
1969 
    p->q1.flags&=~DREFOBJ;
1970 
    load_reg(f,r,&p->q1,INT);
1971 
    p->q1.flags|=(REG|DREFOBJ);
1972 
    p->q1.reg=r;
1973 
  }
1974 
  t=q2typ(p);
1975 
  if(!p->q2.am&&(p->q2.flags&(REG|DREFOBJ|KONST))==DREFOBJ&&ISLWORD(t)){
1976 
    r=get_idx(f,p);
1977 
    p->q2.flags&=~DREFOBJ;
1978 
    load_reg(f,r,&p->q2,INT);
1979 
    p->q2.flags|=(REG|DREFOBJ);
1980 
    p->q2.reg=r;
1981 
  }else if(isreg(z)&&(((p->q2.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&p->q2.reg==p->z.reg)||(p->q2.am&&p->q2.am->base==p->z.reg))){
1982 
    r=get_idx(f,p);
1983 
    p->q2.flags&=~DREFOBJ;
1984 
    load_reg(f,r,&p->q2,INT);
1985 
    p->q2.flags|=(REG|DREFOBJ);
1986 
    p->q2.reg=r;
1987 
  }
1988 
  t=ztyp(p);
1989 
  if(!p->z.am&&(p->z.flags&(REG|DREFOBJ|KONST))==DREFOBJ&&ISLWORD(t)){
1990 
    r=get_idx(f,p);
1991 
    p->z .flags&=~DREFOBJ;
1992 
    load_reg(f,r,&p->z ,INT);
1993 
    p->z .flags|=(REG|DREFOBJ);
1994 
    p->z .reg=r;
1995 
  }
1996 
}
1997 
 
1998 
/*  The main code-generation routine.                   */
1999 
/*  f is the stream the code should be written to.      */
2000 
/*  p is a pointer to a doubly linked list of ICs       */
2001 
/*  containing the function body to generate code for.  */
2002 
/*  v is a pointer to the function.                     */
2003 
/*  offset is the size of the stackframe the function   */
2004 
/*  needs for local variables.                          */
2005 
void gen_code(FILE *f,struct IC *fp,struct Var *v,zmax offset)
2006 
{
2007 
  int c,t,lastcomp=0,reg,short_add,bit_reverse,need_return=0;
2008 
  struct obj *bit_obj;char *bit_reg;
2009 
  static int idone;
2010 
  struct obj o;
2011 
  IC *p,*p2;
2012 
  if(v->tattr&INTERRUPT)
2013 
    ret="rti";
2014 
  else if (v->tattr&FAR)
2015 
        ret="rtf";
2016 
  else
2017 
    ret="rts"; /*FIXME: banked */
2018 
  if(DEBUG&1) printf("gen_code()\n");
2019 
  for(p=fp;p;p=p->next) clear_ext_ic(&p->ext);
2020 
  emit(f,"#off1=%ld\n",zm2l(offset));
2021 
  if(!(g_flags[5]&USEDFLAG)){
2022 
    peephole(fp);
2023 
    if(!frame_used) offset=l2zm(0L);
2024 
  }
2025 
  for(c=1;c<=MAXR;c++) regs[c]=(regsa[c]==REGSA_NEVER)?1:0;
2026 
  for(c=1;c<=MAXR;c++){
2027 
    if(regscratch[c]&&(regsa[c]||regused[c])){
2028 
      BSET(regs_modified,c);
2029 
    }
2030 
  }
2031 
  t=0;
2032 
  for(p=fp;p;p=p->next){
2033 
    c=p->code;
2034 
    if(c==ALLOCREG){ regs[p->q1.reg]=1; if(p->q1.reg==dx) regs[acc]=regs[ix]=1;}
2035 
    if(c==FREEREG){ regs[p->q1.reg]=0; if(p->q1.reg==dx) regs[acc]=regs[ix]=0;}
2036 
    if((c==LSHIFT||c==RSHIFT)&&(p->typf&NQ)>=LONG) regused[iy]=1;
2037 
    if(c==PUSH&&(p->q1.flags&(REG|DREFOBJ))!=REG){
2038 
      if(zmeqto(p->q2.val.vmax,Z1)){
2039 
        if(regs[acc]) t=(t>2)?t:2;
2040 
      }else if(zmeqto(p->q2.val.vmax,l2zm(2L))){
2041 
        if(regs[acc]&&regs[ix]&&regs[iy]&&(CPU==6812||regs[iu])) t=(t>2)?t:2;
2042 
      }else if(zmeqto(p->q2.val.vmax,l2zm(4L))){
2043 
        if(regs[acc]) t=(t>2)?t:2;
2044 
      }else{
2045 
        /* TODO: finer check */
2046 
        if(drel||!regsa[iu])
2047 
          t=(t>8)?t:8;
2048 
        else
2049 
          t=(t>6)?t:6;
2050 
      }
2051 
    }
2052 
  }
2053 
  emit(f,"#toff=%d\n",t);
2054 
  loff=zm2l(offset)+t;
2055 
  function_top(f,v,loff);
2056 
  stackoffset=notpopped=dontpop=maxpushed=0;
2057 
  for(p=fp;p;pr(f,p),p=p->next){
2058 
    c=p->code;t=p->typf;
2059 
    if(debug_info)
2060 
      dwarf2_line_info(f,p);
2061 
    short_add=0;
2062 
    if(c==NOP) continue;
2063 
    if(c==ALLOCREG){
2064 
      regs[p->q1.reg]=1;
2065 
      if(p->q1.reg==dx) regs[acc]=regs[ix]=1;
2066 
      continue;
2067 
    }
2068 
    if(c==FREEREG){
2069 
      regs[p->q1.reg]=0;
2070 
      if(p->q1.reg==dx) regs[acc]=regs[ix]=0;
2071 
      continue;
2072 
    }
2073 
    if(notpopped&&!dontpop){
2074 
      int flag=0;
2075 
      if(c==LABEL||c==COMPARE||c==TEST||c==BRA){
2076 
        gen_pop(f,notpopped);
2077 
        notpopped=0;
2078 
      }
2079 
    }
2080 
    if(c==LABEL) {cc=0;emit(f,"%s%d:\n",labprefix,t);continue;}
2081 
    if(c>=BEQ&&c<=BGT&&t==exit_label) need_return=1;
2082 
    if(c==BRA){
2083 
      if(p->typf==exit_label&&!have_frame){
2084 
        emit(f,"\t%s\n",ret);
2085 
      }else{
2086 
        if(t==exit_label) need_return=1;
2087 
        emit(f,"\tbra\t%s%d\n",labprefix,t);
2088 
      }
2089 
      cc=0;continue;
2090 
    }
2091 
    if(c>=BEQ&&c<BRA){
2092 
      if((lastcomp&UNSIGNED)||ISPOINTER(lastcomp))
2093 
        emit(f,"\tb%s\t%s%d\n",uccs[c-BEQ],labprefix,t);
2094 
      else
2095 
        emit(f,"\tb%s\t%s%d\n",ccs[c-BEQ],labprefix,t);
2096 
      continue;
2097 
    }
2098 
    if(c==MOVETOREG){
2099 
      load_reg(f,p->z.reg,&p->q1,SHORT);
2100 
      continue;
2101 
    }
2102 
    if(c==MOVEFROMREG){
2103 
      store_reg(f,p->q1.reg,&p->z,SHORT);
2104 
      continue;
2105 
    }
2106 
 
2107 
    /*if(ISFLOAT(t)) {pric2(stdout,p);ierror(0);}*/
2108 
 
2109 
    if((t&NQ)==BIT){
2110 
      ierror(0);
2111 
    }
2112 
 
2113 
    if(c==CONVERT&&ISLWORD(t)&&ISLWORD(p->typf2)){
2114 
      p->code=c=ASSIGN;
2115 
      p->q2.val.vmax=l2zm(4L);
2116 
    }
2117 
 
2118 
    if((p->q2.flags&REG)&&ISACC(p->q2.reg)&&(c==ADD||c==MULT||c==AND||c==OR||c==XOR)){
2119 
      obj o=p->q1;
2120 
      p->q1=p->q2;
2121 
      p->q2=o;
2122 
    }
2123 
 
2124 
    if(c==TEST){
2125 
      lastcomp=t;
2126 
      p->code=c=COMPARE;
2127 
      gval.vmax=l2zm(0L);
2128 
      p->q2.flags=KONST;
2129 
      eval_const(&gval,MAXINT);
2130 
      insert_const(&p->q2.val,t);
2131 
    }
2132 
 
2133 
    if(c==SUBPFP){
2134 
      p->code=c=SUB;
2135 
      p->typf=t=(UNSIGNED|INT);
2136 
    }
2137 
 
2138 
 
2139 
 
2140 
    if((c==ASSIGN||c==PUSH)&&zmeqto(p->q2.val.vmax,l2zm(4L)))
2141 
      p->typf=t=LONG;
2142 
 
2143 
    preload(f,p);
2144 
 
2145 
    if(c==ADDI2P||c==SUBIFP){
2146 
      if((p->typf2&NQ)!=HPOINTER){
2147 
        if(p->q2.flags&KONST){
2148 
          eval_const(&p->q2.val,p->typf);
2149 
          insert_const(&p->q2.val,p->typf2);
2150 
          p->typf=t=(UNSIGNED|SHORT);
2151 
        }else{
2152 
          if(ISLWORD(t)) inc_addr(&p->q2,2,t);
2153 
          if((t&NQ)==CHAR) short_add=t;
2154 
          p->typf=t=(UNSIGNED|SHORT);
2155 
        }
2156 
      }else if(ISHWORD(t)){
2157 
        if((t&NQ)==LLONG)
2158 
          inc_addr(&p->q2,4,t);
2159 
        else if((t&NQ)!=LONG)
2160 
          short_add=t;
2161 
        p->typf=t=(UNSIGNED|LONG);
2162 
      }
2163 
      p->code=c=(c==ADDI2P)?ADD:SUB;
2164 
    }
2165 
 
2166 
    if(c==COMPARE&&ISLWORD(t)){
2167 
      IC *branch=p->next;
2168 
      int r;
2169 
      while(branch&&branch->code==FREEREG) branch=branch->next;
2170 
      if(!branch) ierror(0);
2171 
      c=branch->code;
2172 
      if(c<BEQ||c>BGT) ierror(0);
2173 
      if(!regs[ix])
2174 
        r=ix;
2175 
      else
2176 
        r=get_reg(f,p,INT);
2177 
 
2178 
      if(c==BEQ||c==BNE){
2179 
        inc_addr(&p->q1,0,t);
2180 
        inc_addr(&p->q2,0,t);
2181 
        load_reg(f,r,&p->q1,INT);
2182 
        emit(f,"\t%s%s\t",CPU==6812?"cp":"cmp",regnames[r]);
2183 
        emit_obj(f,&p->q2,INT);
2184 
        emit(f,"\n");
2185 
        if(pushed_acc) emit(f,SPULLD);
2186 
        emit(f,"\tbne\t%s%d\n",labprefix,c==BEQ?++label:branch->typf);
2187 
        if(pushed_acc) emit(f,SPUSHD);
2188 
        inc_addr(&p->q1,2,t);
2189 
        inc_addr(&p->q2,2,t);
2190 
        load_reg(f,r,&p->q1,INT);
2191 
        emit(f,"\t%s%s\t",CPU==6812?"cp":"cmp",regnames[r]);
2192 
        emit_obj(f,&p->q2,INT);
2193 
        emit(f,"\n");
2194 
        pr(f,p);
2195 
        if(c==BEQ){
2196 
          emit(f,"\tbeq\t%s%d\n",labprefix,branch->typf);
2197 
          emit(f,"%s%d:\n",labprefix,label);
2198 
        }else
2199 
          emit(f,"\tbne\t%s%d\n",labprefix,branch->typf);
2200 
      }else{
2201 
        inc_addr(&p->q1,0,t);
2202 
        inc_addr(&p->q2,0,t);
2203 
        load_reg(f,r,&p->q1,INT);
2204 
        emit(f,"\t%s%s\t",CPU==6812?"cp":"cmp",regnames[r]);
2205 
        emit_obj(f,&p->q2,INT);
2206 
        emit(f,"\n");
2207 
        label++;
2208 
        if(pushed_acc) emit(f,SPULLD);
2209 
        if(t&UNSIGNED){
2210 
          if(c==BLT||c==BGT)
2211 
            emit(f,"\tb%s\t%s%d\n",(c==BLT)?"lo":"hi",labprefix,branch->typf);
2212 
          else
2213 
            emit(f,"\tb%s\t%s%d\n",(c==BGE)?"lo":"hi",labprefix,label);
2214 
        }else{
2215 
          if(c==BLT||c==BGT)
2216 
            emit(f,"\tb%s\t%s%d\n",(c==BLT)?"lt":"gt",labprefix,branch->typf);
2217 
          else
2218 
            emit(f,"\tb%s\t%s%d\n",(c==BGE)?"lt":"gt",labprefix,label);
2219 
        }
2220 
        emit(f,"\tbne\t%s%d\n",labprefix,(c==BLT||c==BGT)?label:branch->typf);
2221 
        if(pushed_acc) emit(f,SPUSHD);
2222 
        inc_addr(&p->q1,2,t);
2223 
        inc_addr(&p->q2,2,t);
2224 
        load_reg(f,r,&p->q1,INT);
2225 
        emit(f,"\t%s%s\t",CPU==6812?"cp":"cmp",regnames[r]);
2226 
        emit_obj(f,&p->q2,INT);
2227 
        emit(f,"\n");
2228 
        pr(f,p);
2229 
        emit(f,"\tb%s\t%s%d\n",uccs[c-BEQ],labprefix,branch->typf);
2230 
        emit(f,"%s%d:\n",labprefix,label);
2231 
      }
2232 
      branch->code=NOP;
2233 
      continue;
2234 
    }
2235 
 
2236 
    if(ISLWORD(t)&&(c==LSHIFT||c==RSHIFT)){
2237 
      int cnt=-1000,i,r=0;
2238 
      int px=0,py=0,pa=0;
2239 
      if(isconst(q2)){
2240 
        eval_const(&p->q2.val,p->typf2);
2241 
        cnt=(int)zm2l(vmax);
2242 
        if(cnt==1&&compare_objects(&p->q1,&p->z)){
2243 
          if(c==LSHIFT)
2244 
            emit(f,"\tlsl\t");
2245 
          else
2246 
            emit(f,"\t%s\t",(t&UNSIGNED)?"lsr":"asr");
2247 
          inc_addr(&p->z,c==LSHIFT?3:0,t);
2248 
          emit_obj(f,&p->z,t);
2249 
          emit(f,"\n");
2250 
          emit(f,"\t%s\t",(c==LSHIFT)?"rol":"ror");
2251 
          inc_addr(&p->z,c==LSHIFT?-1:1,t);
2252 
          emit_obj(f,&p->z,t);
2253 
          emit(f,"\n");
2254 
          emit(f,"\t%s\t",(c==LSHIFT)?"rol":"ror");
2255 
          inc_addr(&p->z,c==LSHIFT?-1:1,t);
2256 
          emit_obj(f,&p->z,t);
2257 
          emit(f,"\n");
2258 
          emit(f,"\t%s\t",(c==LSHIFT)?"rol":"ror");
2259 
          inc_addr(&p->z,c==LSHIFT?-1:1,t);
2260 
          emit_obj(f,&p->z,t);
2261 
          emit(f,"\n");
2262 
          continue;
2263 
        }
2264 
      }
2265 
      inc_addr(&p->q1,2,t);
2266 
      inc_addr(&p->z,2,t);
2267 
 
2268 
      if(ISRACC(q2)||(regs[acc]&&!scratchreg(acc,p))){
2269 
        emit(f,SPUSHD);
2270 
        push(2);
2271 
        pa=1;
2272 
      }
2273 
 
2274 
      if(cnt<0||(optsize&&cnt>1)||(cnt>3&&!optspeed)){
2275 
        if(regs[ix]&&!scratchreg(ix,p)) {px=1;emit(f,SPUSH("x"));push(2);}
2276 
        if(regs[iy]&&!scratchreg(iy,p)) {py=1;emit(f,SPUSH("y"));push(2);}
2277 
      }
2278 
 
2279 
      if(!compare_objects(&p->q1,&p->z)){
2280 
        load_reg(f,acc,&p->q1,INT);
2281 
        store_reg(f,acc,&p->z,INT);
2282 
      }
2283 
      inc_addr(&p->q1,-2,t);
2284 
      inc_addr(&p->z,-2,t);
2285 
      load_reg(f,acc,&p->q1,INT);
2286 
      if(cnt<0||(optsize&&cnt>1)||(cnt>3&&!optspeed)){
2287 
        if((p->q2.flags&REG)&&p->q2.reg==ix){
2288 
          if((p->z.flags&REG)&&p->z.reg==iy) ierror(0);
2289 
        }else
2290 
          load_addr(f,ix,&p->z);
2291 
        if(ISRACC(q2)){
2292 
          if(scratchreg(acc,p)&&(px+py==0)){
2293 
            emit(f,SPULL("y"));
2294 
            pop(2);pa=0;
2295 
          }else
2296 
            emit(f,"\tldy\t%d,%s\n",(px+py)*2,regnames[sp]);
2297 
        }else
2298 
          load_reg(f,iy,&p->q2,p->typf2); /*TODO: types!=INT?? */
2299 
        if((p->q2.flags&REG)&&p->q2.reg==ix)
2300 
          load_addr(f,ix,&p->z);
2301 
        if(c==LSHIFT)
2302 
          emit(f,"\t%s\t%s__lsll\n",jsrinst,idprefix);
2303 
        else
2304 
          emit(f,"\t%s\t%s__%s\n",jsrinst,idprefix,(t&UNSIGNED)?"lsrl":"asrl");
2305 
        if(py) {emit(f,SPULL("y"));pop(2);}
2306 
        if(px) {emit(f,SPULL("x"));pop(2);}
2307 
      }else{
2308 
        inc_addr(&p->z,c==LSHIFT?3:2,t);
2309 
        for(i=0;i<cnt;i++){
2310 
          if(c==LSHIFT){
2311 
            emit(f,"\tlsl\t");
2312 
            emit_obj(f,&p->z,CHAR);
2313 
            emit(f,"\n");
2314 
            inc_addr(&p->z,-1,t);
2315 
            emit(f,"\trol\t");
2316 
            emit_obj(f,&p->z,CHAR);
2317 
            emit(f,"\n");
2318 
            inc_addr(&p->z,1,t);
2319 
            emit(f,"\trolb\n");
2320 
            emit(f,"\trola\n");
2321 
          }else{
2322 
            emit(f,"\t%s\n",(t&UNSIGNED)?"lsra":"asra");
2323 
            emit(f,"\trorb\n");
2324 
            emit(f,"\tror\t");
2325 
            emit_obj(f,&p->z,CHAR);
2326 
            emit(f,"\n");
2327 
            inc_addr(&p->z,1,t);
2328 
            emit(f,"\tror\t");
2329 
            emit_obj(f,&p->z,CHAR);
2330 
            emit(f,"\n");
2331 
            inc_addr(&p->z,-1,t);
2332 
          }
2333 
        }
2334 
        inc_addr(&p->z,c==LSHIFT?-3:-2,t);
2335 
        store_reg(f,acc,&p->z,INT);
2336 
      }
2337 
      if(pa) {emit(f,SPULLD);pop(2);}
2338 
      continue;
2339 
    }
2340 
 
2341 
    if(ISLWORD(t)&&c!=GETRETURN&&c!=SETRETURN&&c!=COMPARE&&c!=CONVERT&&c!=ADDRESS){
2342 
      if(c==PUSH&&isreg(q1)&&p->q1.reg==dx){
2343 
        if(CPU==6812){
2344 
          emit(f,"\tpshd\n");
2345 
          emit(f,"\tpshx\n");
2346 
        }else{
2347 
          //emit(f,"\tpshs\ta,b,x\n");
2348 
          emit(f,"\tpshs\tb,a\n");
2349 
          emit(f,"\tpshs\tx\n");
2350 
        }
2351 
        push(4);
2352 
        continue;
2353 
      }
2354 
      if(c==ASSIGN&&isreg(q1)&&p->q1.reg==dx){
2355 
        inc_addr(&p->z,2,t);
2356 
        store_reg(f,ix,&p->z,INT);
2357 
        inc_addr(&p->z,-2,t);
2358 
        store_reg(f,acc,&p->z,INT);
2359 
        continue;
2360 
      }
2361 
      if(c==ASSIGN&&isreg(z)&&p->z.reg==dx){
2362 
        inc_addr(&p->q1,2,t);
2363 
        load_reg(f,ix,&p->q1,INT);
2364 
        inc_addr(&p->q1,-2,t);
2365 
        load_reg(f,acc,&p->q1,INT);
2366 
        continue;
2367 
      }
2368 
      if(c==PUSH){
2369 
        if(regs[acc]) emit(f,"\tstd\t%ld,%s\n",loff-roff-2-stackoffset,regnames[sp]);
2370 
      }else
2371 
        get_acc(f,p);
2372 
      /*TODO: acc in IC, constants */
2373 
      inc_addr(&p->q1,2,t);
2374 
      if(c==MINUS){
2375 
        if(CPU!=6812&&!optsize)
2376 
          emit(f,"\tldd\t#0\n");
2377 
        else
2378 
          emit(f,"\tclra\n\tclrb\n");
2379 
      }else
2380 
        load_reg(f,acc,&p->q1,INT);
2381 
      if(c==ADD||c==SUB){
2382 
        inc_addr(&p->q2,2,t);
2383 
        emit(f,"\t%s\t",c==ADD?"addd":"subd");
2384 
        emit_obj(f,&p->q2,INT);
2385 
        emit(f,"\n");
2386 
      }else if(c==ASSIGN||c==PUSH){
2387 
      }else if(c==MINUS){
2388 
        emit(f,"\tsubd\t");
2389 
        emit_obj(f,&p->q1,INT);
2390 
        emit(f,"\n");
2391 
      }else if(c==KOMPLEMENT){
2392 
        emit(f,"\tcoma\n");
2393 
        emit(f,"\tcomb\n");
2394 
      }else{
2395 
        if(c==AND)
2396 
          emit(f,"\tandb\t");
2397 
        else if(c==OR)
2398 
          emit(f,"\tor%sb\t",CPU==6812?"a":"");
2399 
        else if(c==XOR)
2400 
          emit(f,"\teorb\t");
2401 
        inc_addr(&p->q2,3,t);
2402 
        emit_obj(f,&p->q2,CHAR);
2403 
        emit(f,"\n");
2404 
        if(c==AND)
2405 
          emit(f,"\tanda\t");
2406 
        else if(c==OR)
2407 
          emit(f,"\tor%sa\t",CPU==6812?"a":"");
2408 
        else if(c==XOR)
2409 
          emit(f,"\teora\t");
2410 
        inc_addr(&p->q2,-1,t);
2411 
        emit_obj(f,&p->q2,CHAR);
2412 
        emit(f,"\n");
2413 
      }
2414 
      if(c==PUSH){
2415 
        if(CPU==6812)
2416 
          emit(f,"\tpshd\n");
2417 
        else
2418 
          emit(f,"\tpshs\tb,a\n");
2419 
        push(2);dontpop+=2;
2420 
      }else{
2421 
        inc_addr(&p->z,2,t);
2422 
        store_reg(f,acc,&p->z,INT);
2423 
      }
2424 
      inc_addr(&p->q1,-2,t);
2425 
      if(c==MINUS)
2426 
        emit(f,"\tldd\t#0\n");
2427 
      else
2428 
        load_reg(f,acc,&p->q1,INT);
2429 
      if(c==ADD)
2430 
        emit(f,"\tadcb\t");
2431 
      else if(c==SUB)
2432 
        emit(f,"\tsbcb\t");
2433 
      else if(c==AND)
2434 
        emit(f,"\tandb\t");
2435 
      else if(c==OR)
2436 
        emit(f,"\tor%sb\t",CPU==6812?"a":"");
2437 
      else if(c==XOR)
2438 
        emit(f,"\teorb\t");
2439 
      else if(c==KOMPLEMENT)
2440 
        emit(f,"\tcomb\n");
2441 
      else if(c==MINUS){
2442 
        inc_addr(&p->q1,1,t);
2443 
        emit(f,"\tsbcb\t");
2444 
        emit_obj(f,&p->q1,CHAR);
2445 
        emit(f,"\n");
2446 
      }
2447 
      if(p->q2.flags){
2448 
        inc_addr(&p->q2,-1,t);
2449 
        emit_obj(f,&p->q2,CHAR);
2450 
        emit(f,"\n");
2451 
      }
2452 
      if(c==ADD)
2453 
        emit(f,"\tadca\t");
2454 
      else if(c==SUB)
2455 
        emit(f,"\tsbca\t");
2456 
      else if(c==AND)
2457 
        emit(f,"\tanda\t");
2458 
      else if(c==OR)
2459 
        emit(f,"\tor%sa\t",CPU==6812?"a":"");
2460 
      else if(c==XOR)
2461 
        emit(f,"\teora\t");
2462 
      else if(c==KOMPLEMENT)
2463 
        emit(f,"\tcoma\n");
2464 
      else if(c==MINUS){
2465 
        inc_addr(&p->q1,-1,t);
2466 
        emit(f,"\tsbca\t");
2467 
        emit_obj(f,&p->q1,CHAR);
2468 
        emit(f,"\n");
2469 
      }
2470 
      if(p->q2.flags){
2471 
        inc_addr(&p->q2,-1,t);
2472 
        emit_obj(f,&p->q2,CHAR);
2473 
        emit(f,"\n");
2474 
      }
2475 
      if(c==PUSH){
2476 
        if(CPU==6812)
2477 
          emit(f,"\tpshd\n");
2478 
        else
2479 
          emit(f,"\tpshs\tb,a\n");
2480 
        push(2);dontpop+=2;
2481 
        if(regs[acc]) emit(f,"\tldd\t%ld,%s\n",loff-roff-2-stackoffset,regnames[sp]);
2482 
      }else{
2483 
        inc_addr(&p->z,-2,t);
2484 
        store_reg(f,acc,&p->z,INT);
2485 
      }
2486 
      continue;
2487 
    }
2488 
 
2489 
 
2490 
    if(c==COMPARE){
2491 
      int vadr;
2492 
      if(drel&&(p->q1.flags&VARADR)&&!ISFUNC(p->q1.v->vtyp->flags)) vadr=1;
2493 
      else if(drel&&(p->q2.flags&VARADR)&&!ISFUNC(p->q2.v->vtyp->flags)) vadr=2;
2494 
      else if(pcrel&&(p->q1.flags&VARADR)&&ISFUNC(p->q1.v->vtyp->flags)) vadr=1;
2495 
      else if(pcrel&&(p->q2.flags&VARADR)&&ISFUNC(p->q2.v->vtyp->flags)) vadr=2;
2496 
      else vadr=0;
2497 
      if(vadr!=1&&(vadr==2||isconst(q1)||ISRACC(q2))){
2498 
        struct IC *p2;
2499 
        o=p->q1;p->q1=p->q2;p->q2=o;
2500 
        p2=p->next;
2501 
        while(p2&&p2->code==FREEREG) p2=p2->next;
2502 
        if(!p2||p2->code<BEQ||p2->code>BGT) ierror(0);
2503 
        if(p2->code==BLT) p2->code=BGT;
2504 
        else if(p2->code==BGT) p2->code=BLT;
2505 
        else if(p2->code==BLE) p2->code=BGE;
2506 
        else if(p2->code==BGE) p2->code=BLE;
2507 
      }
2508 
      /* case with two relative addresses */
2509 
      if(drel&&(p->q2.flags&VARADR)&&!ISFUNC(p->q2.v->vtyp->flags)) skip_rel=1;
2510 
      if(pcrel&&(p->q2.flags&VARADR)&&ISFUNC(p->q2.v->vtyp->flags)) skip_rel=1;
2511 
    }
2512 
#if 0
2513 
    /* TODO: fix cc */
2514 
    if(c==COMPARE&&isconst(q2)){
2515 
      eval_const(&p->q2.val,t);
2516 
      if(ISNULL()){
2517 
        if(cc&&(cc_t&NU)==(t&NU)&&compare_objects(cc,&p->q1)){
2518 
          lastcomp=t;continue;
2519 
        }
2520 
      }
2521 
    }
2522 
#endif
2523 
 
2524 
    if(!short_add)
2525 
      switch_IC(p);
2526 
 
2527 
    if(c==CONVERT){
2528 
      int to=p->typf2&NU;
2529 
      if(to==INT) to=SHORT;
2530 
      if(to==(UNSIGNED|INT)||to==NPOINTER) to=(UNSIGNED|SHORT);
2531 
      if(to==FPOINTER||to==HPOINTER) to=(UNSIGNED|LONG);
2532 
      if((t&NU)==INT) t=SHORT;
2533 
      if((t&NU)==(UNSIGNED|INT)||(t&NU)==NPOINTER) t=(UNSIGNED|SHORT);
2534 
      if((t&NQ)==FPOINTER||(t&NQ)==HPOINTER) t=(UNSIGNED|LONG);
2535 
      /*if((t&NQ)>=LONG||(to&NQ)>=LONG) ierror(0);*/
2536 
      if((to&NQ)<=LONG&&(t&NQ)<=LONG){
2537 
        if((to&NQ)<(t&NQ)){
2538 
          if(ISLWORD(t)){
2539 
            get_acc(f,p);
2540 
            load_reg(f,acc,&p->q1,to);
2541 
            if((to&NU)==CHAR)
2542 
              emit(f,SEX);
2543 
            else if((to&NU)==(UNSIGNED|CHAR))
2544 
              emit(f,"\tclra\n");
2545 
            inc_addr(&p->z,2,t);
2546 
            store_reg(f,acc,&p->z,INT);
2547 
            inc_addr(&p->z,-2,t);
2548 
            if(to&UNSIGNED){
2549 
              emit(f,"\tclra\n\tclrb\n");
2550 
            }else{
2551 
              if(CPU==6812)
2552 
                emit(f,"\texg\ta,b\n");
2553 
              else
2554 
                emit(f,"\ttfr\ta,b\n");
2555 
              emit(f,SEX);
2556 
              emit(f,"\ttfr\ta,b\n");
2557 
            }
2558 
            store_reg(f,acc,&p->z,INT);
2559 
            continue;
2560 
          }
2561 
          /*emit(f,"#conv RACC=%d, regs=%d scratch=%d\n",(int)ISRACC(z),regs[acc],scratchreg(acc,p));*/
2562 
          if(!ISRACC(z))
2563 
            get_acc(f,p);
2564 
          load_reg(f,acc,&p->q1,to);
2565 
          if(to&UNSIGNED)
2566 
            emit(f,"\tclra\n");
2567 
          else
2568 
            emit(f,SEX);
2569 
          store_reg(f,acc,&p->z,t);
2570 
          cc=&p->z;cc_t=t;
2571 
          continue;
2572 
        }else if((to&NQ)>(t&NQ)){
2573 
          if(!ISRACC(z)&&!ISRACC(q1))
2574 
            get_acc(f,p);
2575 
          if(ISLWORD(to))
2576 
            inc_addr(&p->q1,2,to);
2577 
          load_reg(f,acc,&p->q1,to);
2578 
          store_reg(f,acc,&p->z,t);
2579 
          continue;
2580 
        }else{
2581 
          c=ASSIGN;
2582 
          p->q2.val.vmax=sizetab[t&NQ];
2583 
        }
2584 
      }
2585 
    }
2586 
    if(c==KOMPLEMENT){
2587 
      cc=0;
2588 
      if(compare_objects(&p->q1,&p->z)&&!isreg(q1)&&(p->q1.flags&(REG|DREFOBJ))!=DREFOBJ&&(!p->q1.am||p->q1.am->flags!=ACC_IND)){
2589 
        emit(f,"\tcom\t");
2590 
        emit_obj(f,&p->z,t);
2591 
        emit(f,"\n");
2592 
        if(ISHWORD(t)){
2593 
          mobj=p->z;
2594 
          inc_addr(&mobj,1,t);
2595 
          emit(f,"\tcom\t");
2596 
          emit_obj(f,&mobj,INT);
2597 
          emit(f,"\n");
2598 
        }
2599 
        continue;
2600 
      }
2601 
      if((!isreg(z)||p->z.reg!=acc)&&regs[acc]&&!scratchreg(acc,p))
2602 
        get_acc(f,p);
2603 
      load_reg(f,acc,&p->q1,t);
2604 
      emit(f,"\tcoma\n\tcomb\n");
2605 
      store_reg(f,acc,&p->z,t);
2606 
      continue;
2607 
    }
2608 
    if(c==MINUS){
2609 
      if((!isreg(z)||p->z.reg!=acc)&&regs[acc]&&!scratchreg(acc,p))
2610 
        get_acc(f,p);
2611 
      if(isreg(q1)){
2612 
        load_reg(f,acc,&p->q1,t);
2613 
        emit(f,"\tnega\n\tnegb\n\tsbca\t#0\n");
2614 
      }else{
2615 
        if(CPU!=6812&&!optsize)
2616 
          emit(f,"\tldd\t#0\n");
2617 
        else
2618 
          emit(f,"\tclra\n\tclrb\n");
2619 
        emit(f,"\tsubd\t");
2620 
        emit_obj(f,&p->q1,t);
2621 
        emit(f,"\n");
2622 
      }
2623 
      cc=&p->z;cc_t=t;
2624 
      store_reg(f,acc,&p->z,t);
2625 
      continue;
2626 
    }
2627 
    if(c==SETRETURN){
2628 
      if(isreg(q1)&&p->q1.reg==p->z.reg) continue;
2629 
      if(p->z.reg){
2630 
        if(ISLWORD(t)){
2631 
          inc_addr(&p->q1,0,t);
2632 
          load_reg(f,ix,&p->q1,INT);
2633 
          BSET(regs_modified,ix);
2634 
          inc_addr(&p->q1,2,t);
2635 
        }
2636 
        load_reg(f,acc,&p->q1,t);
2637 
        BSET(regs_modified,acc);
2638 
 
2639 
      }
2640 
      continue;
2641 
    }
2642 
    if(c==GETRETURN){
2643 
      if(isreg(z)&&p->z.reg==p->q1.reg) continue;
2644 
      if(p->q1.reg){
2645 
        if(ISLWORD(t)){
2646 
          store_reg(f,ix,&p->z,INT);
2647 
          BSET(regs_modified,ix);
2648 
          inc_addr(&p->z,2,t);
2649 
        }
2650 
        store_reg(f,acc,&p->z,(t&NQ)==CHAR?t:INT);
2651 
      }
2652 
      continue;
2653 
    }
2654 
    if(c==CALL){
2655 
      int reg,jmp=0;
2656 
      cc=0;
2657 
      if(!calc_regs(p,f!=0)&&v->fi) v->fi->flags&=~ALL_REGS;
2658 
      if((p->q1.flags&(VAR|DREFOBJ))==VAR&&!strcmp("__va_start",p->q1.v->identifier)){
2659 
        long of=va_offset(v)+loff+2;
2660 
        emit(f,"\ttfr\t%s,d\n",regnames[sp]);
2661 
        if(of) emit(f,"\taddd\t#%ld\n",of);
2662 
        continue;
2663 
      }
2664 
      if((p->q1.flags&VAR)&&p->q1.v->fi&&p->q1.v->fi->inline_asm){
2665 
        emit_inline_asm(f,p->q1.v->fi->inline_asm);
2666 
        jmp=1;
2667 
      }else{
2668 
        if(stackoffset==0&&!have_frame&&!strcmp(ret,"rts")){
2669 
          struct IC *p2;
2670 
          jmp=1;
2671 
          for(p2=p->next;p2;p2=p2->next){
2672 
            if(p2->code!=FREEREG&&p2->code!=ALLOCREG&&p2->code!=LABEL){
2673 
              jmp=0;break;
2674 
            }
2675 
          }
2676 
        }
2677 
        if(p->q1.flags&DREFOBJ){
2678 
          /*FIXME: test this*/
2679 
          if(jmp)
2680 
            emit(f,"\tjmp\t");
2681 
          else
2682 
            emit(f,"\tjsr\t");
2683 
          if (p->q1.v->tattr&FAR)
2684 
                emit(f,"\tfar\t");
2685 
          emit_obj(f,&p->q1,t);
2686 
          emit(f,"\n");
2687 
        }else{
2688 
          if(jmp){
2689 
            emit(f,"\t%s\t",jmpinst); /*emit(f,"\tbra\t");*/
2690 
            /*if(!need_return) ret=0;*/ /*TODO: works with optimizer? */
2691 
          }else{
2692 
            emit(f,"\t%s\t",jsrinst); /*emit(f,"\tbsr\t");*/
2693 
          }
2694 
          if (p->q1.v->tattr&FAR)
2695 
                emit(f,"\tfar\t");
2696 
          if(pcrel){
2697 
            pcrel=0;
2698 
            emit_obj(f,&p->q1,t);
2699 
            pcrel=1;
2700 
          }else
2701 
            emit_obj(f,&p->q1,t);
2702 
          emit(f,"\n");
2703 
        }
2704 
      }
2705 
      if(stack_valid){
2706 
        int i;
2707 
        if(p->call_cnt<=0){
2708 
          err_ic=p;if(f) error(320);
2709 
          stack_valid=0;
2710 
        }
2711 
        for(i=0;stack_valid&&i<p->call_cnt;i++){
2712 
          if(p->call_list[i].v->fi&&(p->call_list[i].v->fi->flags&ALL_STACK)){
2713 
            /*FIXME: size of return addr depends on mode */
2714 
            if(!jmp) push(2);
2715 
            callee_push(zm2l(p->call_list[i].v->fi->stack1));
2716 
            if(!jmp) pop(2);
2717 
          }else{
2718 
            err_ic=p;if(f) error(317,p->call_list[i].v->identifier);
2719 
            stack_valid=0;
2720 
          }
2721 
        }
2722 
      }
2723 
      if(!zmeqto(l2zm(0L),p->q2.val.vmax)){
2724 
        notpopped+=zm2l(p->q2.val.vmax);
2725 
        dontpop-=zm2l(p->q2.val.vmax);
2726 
        if(!(g_flags[2]&USEDFLAG)&&stackoffset==-notpopped){
2727 
          /*  Entfernen der Parameter verzoegern  */
2728 
        }else{
2729 
          gen_pop(f,zm2l(p->q2.val.vmax));
2730 
          notpopped-=zm2l(p->q2.val.vmax);
2731 
        }
2732 
      }
2733 
      continue;
2734 
    }
2735 
    if(c==ASSIGN||c==PUSH){
2736 
      if(c==PUSH) dontpop+=zm2l(p->q2.val.vmax);
2737 
      if(!zmleq(p->q2.val.vmax,l2zm(2L))){
2738 
        unsigned long size;int qr=0,zr=0,cr=0,px=0,py=0,pu=0,pd=0,lq=0,lz=0;
2739 
        size=zm2l(p->q2.val.vmax);
2740 
        if(c==ASSIGN){
2741 
          if(!p->z.am&&(p->z.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&ISIDX(p->z.reg)){
2742 
            zr=p->z.reg;lz=1;
2743 
          }
2744 
        }
2745 
        if(!p->q1.am&&(p->q1.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&ISIDX(p->q1.reg)&&p->q1.reg!=zr){
2746 
          qr=p->q1.reg;lq=1;
2747 
        }
2748 
        if(!qr){
2749 
          if(zr==ix) qr=iy;
2750 
          else if(zr==iy||zr==iu) qr=ix;
2751 
          else{qr=ix;zr=iy;}
2752 
        }else if(!zr){
2753 
          if(qr==ix) zr=iy; else zr=ix;
2754 
        }
2755 
        if(CPU!=6812){
2756 
          if(qr!=iu&&zr!=iu) cr=iu;
2757 
          if(qr!=ix&&zr!=ix) cr=ix;
2758 
          if(qr!=iy&&zr!=iy) cr=iy;
2759 
          if(!cr) ierror(0);
2760 
        }
2761 
        if(c==PUSH){
2762 
          emit(f,"\tleas\t%ld,%s\n",SGN16(-size),regnames[sp]);
2763 
          push(size);
2764 
        }
2765 
        if(CPU!=6812&&(drel||!regused[iu]||(regs[iu]&&!scratchreg(iu,p)))){
2766 
          if(c==PUSH)
2767 
            emit(f,"\tstu\t%ld,%s\n",loff-roff-8-stackoffset,regnames[sp]);
2768 
          else{
2769 
            emit(f,SPUSH("u"));
2770 
            push(2);
2771 
          }
2772 
          pu=1;
2773 
        }
2774 
        if(!regused[iy]||(regs[iy]&&!scratchreg(iy,p))){
2775 
          if(c==PUSH)
2776 
            emit(f,"\tsty\t%ld,%s\n",loff-roff-4-stackoffset,regnames[sp]);
2777 
          else{
2778 
            emit(f,SPUSH("y"));
2779 
            push(2);
2780 
          }
2781 
          py=1;
2782 
        }
2783 
        if(regs[ix]&&!scratchreg(ix,p)){
2784 
          if(c==PUSH)
2785 
            emit(f,"\tstx\t%ld,%s\n",loff-roff-2-stackoffset,regnames[sp]);
2786 
          else{
2787 
            emit(f,SPUSH("x"));
2788 
            push(2);
2789 
          }
2790 
          px=1;
2791 
        }
2792 
        if(!lq) load_addr(f,qr,&p->q1);
2793 
        if(c==PUSH)
2794 
          emit(f,"\ttfr\t%s,%s\n",regnames[sp],regnames[zr]);
2795 
        else
2796 
          if(!lz) load_addr(f,zr,&p->z);
2797 
        if(size<=6||(size<=16&&!optsize)){
2798 
          if(CPU!=6812){
2799 
            if(!scratchreg(acc,p)){
2800 
              if(c==PUSH)
2801 
                emit(f,"\tstd\t%ld,%s\n",loff-roff-6-stackoffset,regnames[sp]);
2802 
              else{
2803 
                emit(f,SPUSHD);
2804 
                push(2);
2805 
              }
2806 
              pd=2;
2807 
            }
2808 
          }
2809 
          while(size>2){
2810 
            if(CPU==6812)
2811 
              emit(f,"\tmovw\t2,%s+,2,%s+\n",regnames[qr],regnames[zr]);
2812 
            else
2813 
              emit(f,"\tldd\t,%s++\n\tstd\t,%s++\n",regnames[qr],regnames[zr]);
2814 
            size-=2;
2815 
          }
2816 
          if(CPU==6812)
2817 
            emit(f,"\tmov%c\t0,%s,0,%s\n",size==2?'w':'b',regnames[qr],regnames[zr]);
2818 
          else
2819 
            emit(f,"\tld%c\t,%s\n\tst%c\t,%s\n",size==2?'d':'b',regnames[qr],size==2?'d':'b',regnames[zr]);
2820 
        }else{
2821 
          int l=++label,cnt=(int)(optsize?size:size/8);
2822 
          if(regs[acc]&&!scratchreg(acc,p)){
2823 
            if(c==PUSH)
2824 
              emit(f,"\tst%c\t%ld,%s\n",(CPU!=6812&&cnt<=bytemask)?'b':'d',loff-roff-6-stackoffset,regnames[sp]);
2825 
            else{
2826 
              if(CPU!=6812&&cnt<=bytemask){
2827 
                emit(f,SPUSH("b"));
2828 
                push(1);
2829 
              }else{
2830 
                emit(f,SPUSHD);
2831 
                push(2);
2832 
              }
2833 
            }
2834 
            pd=(CPU!=6812&&cnt<=bytemask)?1:2;
2835 
          }
2836 
          if(CPU!=6812&&cnt<=bytemask)
2837 
            emit(f,"\tldb\t#%lu\n",cnt);
2838 
          else
2839 
            emit(f,"\tldd\t#%lu\n",cnt);
2840 
          cc=0;
2841 
#if 0
2842 
          if(CPU!=6812&&((!regsa[iu]&&regs[iu])||drel)){
2843 
            if(c==PUSH){
2844 
              emit(f,"\tstu\t%ld,%s\n",loff-roff-8-stackoffset,regnames[sp]);
2845 
            }else{
2846 
              emit(f,SPUSH("u"));push(2);
2847 
            }
2848 
          }
2849 
#endif
2850 
          emit(f,"%s%d:\n",labprefix,l);
2851 
          if(CPU==6812){
2852 
            if(optsize){
2853 
              emit(f,"\tmovb\t2,%s+,2,%s+\n",regnames[qr],regnames[zr]);
2854 
            }else{
2855 
              emit(f,"\tmovw\t2,%s+,2,%s+\n",regnames[qr],regnames[zr]);
2856 
              emit(f,"\tmovw\t2,%s+,2,%s+\n",regnames[qr],regnames[zr]);
2857 
              emit(f,"\tmovw\t2,%s+,2,%s+\n",regnames[qr],regnames[zr]);
2858 
              emit(f,"\tmovw\t2,%s+,2,%s+\n",regnames[qr],regnames[zr]);
2859 
              size=size&7;
2860 
            }
2861 
            emit(f,"\tdbne\td,%s%d\n",labprefix,l);
2862 
          }else{
2863 
            if(optsize){
2864 
              emit(f,"\tld%s\t,%s+\n\tst%s\t,%s+\n",regnames[cr],regnames[qr],regnames[cr],regnames[zr]);
2865 
              size&=1;
2866 
            }else{
2867 
              emit(f,"\tld%s\t,%s++\n\tst%s\t,%s++\n",regnames[cr],regnames[qr],regnames[cr],regnames[zr]);
2868 
              emit(f,"\tld%s\t,%s++\n\tst%s\t,%s++\n",regnames[cr],regnames[qr],regnames[cr],regnames[zr]);
2869 
              emit(f,"\tld%s\t,%s++\n\tst%s\t,%s++\n",regnames[cr],regnames[qr],regnames[cr],regnames[zr]);
2870 
              emit(f,"\tld%s\t,%s++\n\tst%s\t,%s++\n",regnames[cr],regnames[qr],regnames[cr],regnames[zr]);
2871 
              size&=7;
2872 
            }
2873 
            if(cnt<=bytemask)
2874 
              emit(f,"\tdecb\n");
2875 
            else
2876 
              emit(f,"\tsubd\t#1\n");
2877 
            emit(f,"\tbne\t%s%d\n",labprefix,l);
2878 
          }
2879 
#if 0
2880 
          if(CPU!=6812&&((!regsa[iu]&&regs[iu])||drel)){
2881 
            if(c==PUSH){
2882 
              emit(f,"\tldu\t%ld,%s\n",loff-roff-8-stackoffset,regnames[sp]);
2883 
            }else{
2884 
              emit(f,SPULL("u"));pop(2);
2885 
            }
2886 
          }
2887 
#endif
2888 
          while(size>=2){
2889 
            if(CPU==6812)
2890 
              emit(f,"\tmovw\t2,%s+,2,%s+\n",regnames[qr],regnames[zr]);
2891 
            else
2892 
              emit(f,"\tldd\t,%s++\n\tstd\t,%s++\n",regnames[qr],regnames[zr]);
2893 
            size-=2;
2894 
          }
2895 
          if(size){
2896 
            if(CPU==6812)
2897 
              emit(f,"\tmovb\t0,%s,0,%s\n",regnames[qr],regnames[zr]);
2898 
            else
2899 
              emit(f,"\tldb\t,%s\n\tstb\t,%s\n",regnames[qr],regnames[zr]);
2900 
          }
2901 
        }
2902 
        if(pd){
2903 
          if(c==PUSH)
2904 
            emit(f,"\tld%c\t%ld,%s\n",(pd==1)?'b':'d',loff-roff-6-stackoffset,regnames[sp]);
2905 
          else{
2906 
            if(pd==1){
2907 
              emit(f,SPULL("b"));
2908 
              pop(1);
2909 
            }else{
2910 
              emit(f,SPULLD);
2911 
              pop(2);
2912 
            }
2913 
          }
2914 
        }
2915 
        if(px){
2916 
          if(c==PUSH)
2917 
            emit(f,"\tldx\t%ld,%s\n",loff-roff-2-stackoffset,regnames[sp]);
2918 
          else{
2919 
            emit(f,SPULL("x"));
2920 
            pop(2);
2921 
          }
2922 
        }
2923 
        if(py){
2924 
          if(c==PUSH)
2925 
            emit(f,"\tldy\t%ld,%s\n",loff-roff-4-stackoffset,regnames[sp]);
2926 
          else{
2927 
            emit(f,SPULL("y"));
2928 
            pop(2);
2929 
          }
2930 
        }
2931 
        if(pu){
2932 
          if(c==PUSH)
2933 
            emit(f,"\tldu\t%ld,%s\n",loff-roff-8-stackoffset,regnames[sp]);
2934 
          else{
2935 
            emit(f,SPULL("u"));
2936 
            pop(2);
2937 
          }
2938 
        }
2939 
        continue;
2940 
      }
2941 
      if(!ISSCALAR(t)) t=zmeqto(p->q2.val.vmax,l2zm(1L))?CHAR:INT;
2942 
      if((t&NQ)==CHAR&&!zmeqto(p->q2.val.vmax,l2zm(1L))) t=INT;
2943 
      if(mov_op(&p->q1)&&(c==PUSH||mov_op(&p->z))){
2944 
        emit(f,"\tmov%c\t",ISHWORD(t)?'w':'b');
2945 
        emit_obj(f,&p->q1,t);
2946 
        if(c==ASSIGN){
2947 
          emit(f,",");
2948 
          emit_obj(f,&p->z,t);
2949 
          emit(f,"\n");
2950 
        }else{
2951 
          emit(f,",%d,-%s\n",ISHWORD(t)?2:1,regnames[sp]);
2952 
          push(ISHWORD(t)?2:1);
2953 
        }
2954 
        continue;
2955 
      }
2956 
      if(((regs[acc]&&regs[ix])||(t&NQ)==CHAR)&&(p->q1.flags&KONST)&&!isreg(z)){
2957 
        eval_const(&p->q1.val,t);
2958 
        if(zmeqto(vmax,l2zm(0L))&&zumeqto(vumax,ul2zum(0UL))&&((p->z.flags&(REG|DREFOBJ))!=DREFOBJ||(t&NQ)==CHAR)&&(!p->z.am||p->z.am->flags!=ACC_IND||(t&NQ)==CHAR)){
2959 
          emit(f,"\tclr\t");
2960 
          if(c==ASSIGN){
2961 
            emit_obj(f,&p->z,t);emit(f,"\n");
2962 
          }else{
2963 
            emit(f,CPU==6812?"1,-sp\n":",-s\n");
2964 
            push(1);
2965 
          }
2966 
          if(!ISHWORD(t)) continue;
2967 
          emit(f,"\tclr\t");
2968 
          if(c==ASSIGN){
2969 
            mobj=p->z;
2970 
            inc_addr(&mobj,1,t);
2971 
            emit_obj(f,&mobj,t);emit(f,"\n");
2972 
          }else{
2973 
            emit(f,CPU==6812?"1,-sp\n":",-s\n");
2974 
            push(1);
2975 
          }
2976 
          continue;
2977 
        }
2978 
 
2979 
      }
2980 
      if(c==PUSH){
2981 
        int st=0;
2982 
        if(isreg(q1)){
2983 
          reg=p->q1.reg;
2984 
        }else{
2985 
          if((t&NQ)==CHAR||!regs[acc]||scratchreg(acc,p)) reg=acc;
2986 
          else if(!regs[ix]||scratchreg(ix,p)) reg=ix;
2987 
          else if(regused[iy]&&(!regs[iy]||scratchreg(iy,p))) reg=iy;
2988 
          else if(regused[iu]&&!drel&&CPU!=6812&&(!regs[iu]||scratchreg(iu,p))) reg=iu;
2989 
          else reg=acc;
2990 
          if(regs[reg]&&!scratchreg(reg,p)){
2991 
            st=1;
2992 
            emit(f,"\tst%s\t%ld,%s\n",regnames[reg],(long)loff-roff-2-stackoffset,regnames[sp]);
2993 
          }
2994 
          load_reg(f,reg,&p->q1,t);
2995 
        }
2996 
        if((t&NQ)==CHAR)
2997 
          emit(f,SPUSH("b"));
2998 
        else if(reg==ix)
2999 
          emit(f,SPUSH("x"));
3000 
        else if(reg==iy)
3001 
          emit(f,SPUSH("y"));
3002 
        else if(reg==iu)
3003 
          emit(f,SPUSH("u"));
3004 
        else
3005 
          emit(f,SPUSHD);
3006 
        push(zm2l(p->q2.val.vmax));
3007 
        if(st)
3008 
          emit(f,"\tld%s\t%ld,%s\n",regnames[reg],(long)loff-roff-2-stackoffset,regnames[sp]);
3009 
        continue;
3010 
      }
3011 
      if(c==ASSIGN){
3012 
        if(isreg(q1)&&isreg(z)){
3013 
          if(p->q1.reg!=p->z.reg)
3014 
            emit(f,"\ttfr\t%s,%s\n",regnames[p->q1.reg],regnames[p->z.reg]);
3015 
        }else if(isreg(q1)){
3016 
          store_reg(f,p->q1.reg,&p->z,t);
3017 
        }else if(isreg(z)){
3018 
          load_reg(f,p->z.reg,&p->q1,t);
3019 
        }else{
3020 
          reg=get_reg(f,p,t);
3021 
          load_reg(f,reg,&p->q1,t);
3022 
          store_reg(f,reg,&p->z,t);
3023 
        }
3024 
        continue;
3025 
      }
3026 
      ierror(0);
3027 
    }
3028 
    if(c==ADDRESS){
3029 
      int px=0;
3030 
      if(isreg(z)){
3031 
        reg=p->z.reg;
3032 
      }else if(!regs[ix]){
3033 
        reg=ix;
3034 
      }else if(!regs[iy]){
3035 
        reg=iy;
3036 
      }else{
3037 
        /*FIXME: test if x used in q1 */
3038 
        px=1;
3039 
        emit(f,SPUSH("x"));
3040 
        reg=ix;
3041 
        push(2);
3042 
      }
3043 
      load_addr(f,reg,&p->q1);
3044 
      if(!(p->z.flags&REG)||p->z.reg!=reg)
3045 
        store_reg(f,reg,&p->z,p->typf2);
3046 
      if(px){
3047 
        emit(f,SPULL("x"));
3048 
        pop(2);
3049 
      }
3050 
      continue;
3051 
    }
3052 
 
3053 
    if((c==MULT||c==DIV||(c==MOD&&(p->typf&UNSIGNED)))&&isconst(q2)){
3054 
      long ln;
3055 
      eval_const(&p->q2.val,t);
3056 
      if(zmleq(l2zm(0L),vmax)&&zumleq(ul2zum(0UL),vumax)){
3057 
        if((ln=pof2(vumax))&&ln<5){
3058 
          if(c==MOD){
3059 
            vmax=zmsub(vmax,l2zm(1L));
3060 
            c=p->code=c=AND;
3061 
          }else{
3062 
            vmax=l2zm(ln-1);
3063 
            if(c==DIV) p->code=c=RSHIFT; else p->code=c=LSHIFT;
3064 
          }
3065 
          c=p->code;
3066 
          gval.vmax=vmax;
3067 
          eval_const(&gval,MAXINT);
3068 
          if(c==AND){
3069 
            insert_const(&p->q2.val,t);
3070 
          }else{
3071 
            insert_const(&p->q2.val,t);
3072 
            p->typf2=INT;
3073 
          }
3074 
        }
3075 
      }
3076 
    }
3077 
    if(c==MOD||c==DIV){
3078 
      ierror(0);
3079 
      continue;
3080 
    }
3081 
 
3082 
 
3083 
    if((c==ADD||c==SUB)&&(p->q2.flags&(KONST|DREFOBJ))==KONST&&(p->q1.flags&(REG|DREFOBJ))!=REG&&(p->q1.flags&(REG|DREFOBJ))!=DREFOBJ&&!p->q1.am&&!p->z.am&&compare_objects(&p->q1,&p->z)){
3084 
      eval_const(&p->q2.val,t);
3085 
      if(c==SUB) vmax=zmsub(Z0,vmax);
3086 
      if((t&NQ)==CHAR&&zmeqto(vmax,Z1)){
3087 
        emit(f,"\tinc\t");
3088 
        emit_obj(f,&p->z,t);
3089 
        emit(f,"\n");
3090 
        continue;
3091 
      }else if((t&NQ)==CHAR&&zmeqto(vmax,l2zm(-1L))){
3092 
        emit(f,"\tdec\t");
3093 
        emit_obj(f,&p->z,t);
3094 
        emit(f,"\n");
3095 
        continue;
3096 
      }else if(((t&NQ)==SHORT||(t&NQ)==INT)&&zmeqto(vmax,l2zm(1L))){
3097 
        inc_addr(&p->z,1,t);
3098 
        emit(f,"\tinc\t");
3099 
        emit_obj(f,&p->z,t);
3100 
        emit(f,"\n");
3101 
        emit(f,"\tbne\t%s%d\n",labprefix,++label);
3102 
        inc_addr(&p->z,-1,t);
3103 
        emit(f,"\tinc\t");
3104 
        emit_obj(f,&p->z,t);
3105 
        emit(f,"\n");
3106 
        emit(f,"%s%d:\n",labprefix,label);
3107 
        continue;
3108 
      }else if(regs[acc]&&((t&NQ)==SHORT||(t&NQ)==INT)&&zmeqto(vmax,l2zm(-1L))){
3109 
        inc_addr(&p->z,1,t);
3110 
        emit(f,"\ttst\t");
3111 
        emit_obj(f,&p->z,t);
3112 
        emit(f,"\n");
3113 
        emit(f,"\tbne\t%s%d\n",labprefix,++label);
3114 
        inc_addr(&p->z,-1,t);
3115 
        emit(f,"\tdec\t");
3116 
        emit_obj(f,&p->z,t);
3117 
        emit(f,"\n");
3118 
        emit(f,"%s%d:\n",labprefix,label);
3119 
        inc_addr(&p->z,1,t);
3120 
        emit(f,"\tdec\t");
3121 
        emit_obj(f,&p->z,t);
3122 
        emit(f,"\n");
3123 
        continue;
3124 
      }
3125 
    }
3126 
 
3127 
    if((c>=LSHIFT&&c<=MOD)||c==ADDI2P||c==SUBIFP||c==SUBPFP||(c>=OR&&c<=AND)||c==COMPARE){
3128 
      char *s;
3129 
      /*FIXME: nicht immer besser*/
3130 
      if(ISLWORD(t)&&c==LSHIFT&&isconst(q2)){
3131 
        eval_const(&p->q2.val,t);
3132 
        if(zm2l(vmax)==1){
3133 
          p->code=c=ADD;
3134 
          p->q2=p->q1;
3135 
        }
3136 
      }
3137 
      if((c==ADD||c==ADDI2P||c==MULT||(c>=OR&&c<=AND))&&isreg(q2)&&!isreg(q1)&&!short_add){
3138 
        o=p->q1;p->q1=p->q2;p->q2=o;
3139 
      }
3140 
      if((c==ADD||c==MULT||(c>=OR&&c<=AND))&&isreg(q2)&&p->q2.reg==acc&&!short_add){
3141 
        o=p->q1;p->q1=p->q2;p->q2=o;
3142 
      }
3143 
      if(c==MULT||c==MOD){
3144 
        if((!isreg(z)||p->z.reg!=acc)&&regs[acc]&&!scratchreg(acc,p))
3145 
          get_acc(f,p);
3146 
        reg=acc;
3147 
        /*FIXME: y bzw. x-Register*/
3148 
      }else if(c==LSHIFT||c==RSHIFT||c==AND||c==OR||c==XOR){
3149 
        if((!isreg(z)||p->z.reg!=acc)&&regs[acc]&&!scratchreg(acc,p))
3150 
          get_acc(f,p);
3151 
        reg=acc;
3152 
      }else if(c==DIV){
3153 
        reg=ix;
3154 
        ierror(0);
3155 
      }else if(isreg(z)){
3156 
        reg=p->z.reg;
3157 
      }else if(isreg(q1)&&(c==COMPARE||scratchreg(p->q1.reg,p))){
3158 
        reg=p->q1.reg;
3159 
      }else{
3160 
        if(c==ADD||c==SUB||c==ADDI2P||c==SUBIFP||c==COMPARE){
3161 
          if(ISRACC(q2))
3162 
            reg=acc;
3163 
          else
3164 
            reg=get_reg(f,p,t);
3165 
        }else{
3166 
          get_acc(f,p);
3167 
          reg=acc;
3168 
        }
3169 
      }
3170 
      if(c==ADD||c==ADDI2P||c==SUB||c==SUBIFP){
3171 
        int opdone=0;
3172 
        if(isreg(q1)){
3173 
          if(ISIDX(reg)&&ISIDX(p->q1.reg)&&isconst(q2)){
3174 
            eval_const(&p->q2.val,short_add?short_add:q2typ(p));
3175 
            if(CPU==6812&&p->q1.reg==reg&&zmeqto(vmax,l2zm(1L))&&zumeqto(vumax,ul2zum(1UL))){
3176 
              emit(f,"\t%s%s\n",c==SUB?"de":"in",regnames[reg]);
3177 
              /*FIXME: condition-codes for bne/beq could be used */
3178 
            }else{
3179 
              emit(f,"\tlea%s\t%ld,%s\n",regnames[reg],c==SUB?SGN16(-zm2l(vmax)):SGN16(zm2l(vmax)),regnames[p->q1.reg]);
3180 
            }
3181 
            opdone=1;
3182 
          }else if((c==ADD||c==ADDI2P)&&ISIDX(reg)&&ISIDX(p->q1.reg)&&ISRACC(q2)){
3183 
            emit(f,"\tlea%s\t%s,%s\n",regnames[reg],((t&NQ)==CHAR||(short_add&NQ)==CHAR)?"b":"d",regnames[p->q1.reg]);
3184 
            opdone=1;
3185 
          }else if((c==ADD||c==ADDI2P)&&ISIDX(reg)&&ISACC(p->q1.reg)&&ISRIDX(q2)){
3186 
            emit(f,"\tlea%s\t%s,%s\n",regnames[reg],(t&NQ)==CHAR?"b":"d",regnames[p->q2.reg]);
3187 
            opdone=1;
3188 
          }else if((c==ADD||c==ADDI2P)&&p->q1.reg==acc&&ISIDX(reg)&&!short_add){
3189 
            load_reg(f,reg,&p->q2,t);
3190 
            emit(f,"\tlea%s\t%s,%s\n",regnames[reg],(t&NQ)==CHAR?"b":"d",regnames[reg]);
3191 
            opdone=1;
3192 
          }else if((c==ADD||c==ADDI2P)&&p->q1.reg==acc&&ISIDX(reg)&&(short_add&NU)==(UNSIGNED|CHAR)&&scratchreg(acc,p)){
3193 
            emit(f,"\taddb\t");
3194 
            emit_obj(f,&p->q2,short_add);
3195 
            emit(f,"\n");
3196 
            emit(f,"\tadca\t#0\n");
3197 
            emit(f,"\ttfr\td,y\n");
3198 
            opdone=1;
3199 
          }else if((c==ADD||c==ADDI2P)&&ISACC(p->q1.reg)&&ISRACC(z)&&isreg(q2)&&ISIDX(p->q2.reg)){
3200 
            if(!scratchreg(p->q2.reg,p)) emit(f,"\texg\t%s,%s\n",regnames[acc],regnames[p->q2.reg]);
3201 
            emit(f,"\tlea%s\t%s,%s\n",regnames[p->q2.reg],regnames[acc],regnames[p->q2.reg]);
3202 
            emit(f,"\texg\t%s,%s\n",regnames[acc],regnames[p->q2.reg]);
3203 
            opdone=1;
3204 
          }else if(p->q1.reg!=reg){
3205 
            if(c==ADD||c==ADDI2P||!ISRACC(q2))
3206 
              emit(f,"\ttfr\t%s,%s\n",regnames[p->q1.reg],regnames[reg]);
3207 
          }
3208 
        }else if(short_add&&c==SUB&&reg==acc&&!(short_add&UNSIGNED)){
3209 
          load_reg(f,reg,&p->q2,short_add);
3210 
          emit(f,"\tclra\n");
3211 
          emit(f,"\tnegb\n");
3212 
          emit(f,"\tsbca\t#0\n");
3213 
          emit(f,"\taddd\t");
3214 
          emit_obj(f,&p->q1,t);
3215 
          emit(f,"\n");
3216 
          store_reg(f,reg,&p->z,ztyp(p));
3217 
          continue;
3218 
        }else if(short_add&&c==ADD&&reg==acc){
3219 
          load_reg(f,reg,&p->q2,short_add);
3220 
          if(short_add&UNSIGNED)
3221 
            emit(f,"\tclra\n");
3222 
          else
3223 
            emit(f,SEX);
3224 
          emit(f,"\taddd\t");
3225 
          emit_obj(f,&p->q1,t);
3226 
          emit(f,"\n");
3227 
          store_reg(f,reg,&p->z,ztyp(p));
3228 
          continue;
3229 
        }else{
3230 
          if(!ISRACC(q2))
3231 
            load_reg(f,reg,&p->q1,q1typ(p));
3232 
        }
3233 
        if(!opdone){
3234 
          if(reg==acc){
3235 
            if(ISRACC(q2)){
3236 
              if(!ISRACC(z)) get_acc(f,p);
3237 
              if(c==ADD||c==ADDI2P){
3238 
                if(short_add){
3239 
                  if(short_add&UNSIGNED)
3240 
                    emit(f,"\tclra\n");
3241 
                  else
3242 
                    emit(f,SEX);
3243 
                  emit(f,"\taddd\t");
3244 
                  emit_obj(f,&p->q1,t);
3245 
                  emit(f,"\n");
3246 
                }else{
3247 
                  if(CPU==6812)
3248 
                    emit(f,"\tasld\n"); /* only cases with q1=q2=acc should remain */
3249 
                  else{
3250 
                    emit(f,"\taslb\n");
3251 
                    if((t&NQ)!=CHAR)
3252 
                      emit(f,"\trola\n");
3253 
                  }
3254 
                }
3255 
              }else{
3256 
                if(short_add){
3257 
                  if(short_add&UNSIGNED)
3258 
                    emit(f,"\tld%sa\t#255\n",(CPU==6812)?"a":"");
3259 
                  else{
3260 
                    emit(f,SEX);
3261 
                    emit(f,"\tnega\n");
3262 
                  }
3263 
                  emit(f,"\tnegb\n\tsbca\t#0\n");
3264 
                }else if((t&NQ)!=CHAR){
3265 
                  emit(f,"\tnega\n\tnegb\n\tsbca\t#0\n");
3266 
                }else{
3267 
                  emit(f,"\tnegb\n");
3268 
                }
3269 
 
3270 
                if(ISRIDX(q1)){
3271 
                  emit(f,"\t%s%s\n",CPU==6812?"psh":"pshs\t",regnames[p->q1.reg]);
3272 
                  emit(f,"\taddd\t%s\n",CPU==6812?"1,s+":",s++");
3273 
                }else{
3274 
                  emit(f,"\taddd\t");
3275 
                  emit_obj(f,&p->q1,t);
3276 
                  emit(f,"\n");
3277 
                }
3278 
              }
3279 
            }else{
3280 
              if(ISRIDX(q2)){
3281 
                if(CPU==6812)
3282 
                  emit(f,"\tpsh%s\n",regnames[p->q2.reg]);
3283 
                else
3284 
                  emit(f,"\tpshs\t%s\n",regnames[p->q2.reg]);
3285 
                push(2);pop(2);
3286 
                if(CPU==6812)
3287 
                  emit(f,"\t%sd\t2,%s+\n",(c==ADD||c==ADDI2P)?"add":"sub",regnames[sp]);
3288 
                else
3289 
                  emit(f,"\t%sd\t,%s++\n",(c==ADD||c==ADDI2P)?"add":"sub",regnames[sp]);
3290 
              }else{
3291 
                emit(f,"\t%s%s\t",(c==ADD||c==ADDI2P)?"add":"sub",(short_add||(t&NQ)==CHAR)?"b":"d");
3292 
                emit_obj(f,&p->q2,short_add?short_add:t);emit(f,"\n");
3293 
                if(short_add){
3294 
                  if(short_add&UNSIGNED)
3295 
                    emit(f,"\t%s\t#0\n",c==ADD?"adca":"sbca");
3296 
                  else
3297 
                    ierror(0);
3298 
                }
3299 
                if(drel&&(p->q2.flags&VARADR)){
3300 
                  if(CPU==6812) ierror(0);
3301 
                  emit(f,"\tpshs\t%s\n",regnames[iu]);push(2);
3302 
                  emit(f,"\t%sd\t,%s++\n",(c==ADD||c==ADDI2P)?"add":"sub",regnames[sp]);
3303 
                  pop(2);
3304 
                }
3305 
              }
3306 
            }
3307 
            cc=&p->z;cc_t=t;
3308 
          }else{
3309 
            if(isconst(q2)){
3310 
              long l;
3311 
              eval_const(&p->q2.val,short_add?short_add:t);
3312 
              l=zm2l(vmax);
3313 
              if(c==SUB) l=-l;
3314 
              /*FIXME: condition-codes for bne/beq could be used */
3315 
              if(l==1&&reg==ix&&CPU==6812){
3316 
                emit(f,"\tinx\n");
3317 
              }else if(l==1&&reg==iy&&CPU==6812){
3318 
                emit(f,"\tiny\n");
3319 
              }else if(l==-1&&reg==ix&&CPU==6812){
3320 
                emit(f,"\tdex\n");
3321 
              }else if(l==-1&&reg==iy&&CPU==6812){
3322 
                emit(f,"\tdey\n");
3323 
              }else{
3324 
                emit(f,"\tlea%s\t%ld,%s\n",regnames[reg],SGN16(l),regnames[reg]);
3325 
              }
3326 
            }else{
3327 
              if(c!=ADD&&c!=ADDI2P){
3328 
                if(!ISRACC(q2)){
3329 
                  if(!scratchreg(acc,p))
3330 
                    get_acc(f,p);
3331 
                  load_reg(f,acc,&p->q2,t);
3332 
                  if((t&NQ)!=CHAR){
3333 
                    emit(f,"\tnega\n\tnegb\n\tsbca\t#0\n");
3334 
                  }else{
3335 
                    emit(f,"\tnegb\n");
3336 
                  }
3337 
                  /*load_reg(f,reg,&p->q1,t);*/
3338 
                }else{
3339 
                  get_acc(f,p);
3340 
                  load_reg(f,reg,&p->q1,t);
3341 
                  if((t&NQ)==CHAR)
3342 
                    emit(f,"\tnegb\n");
3343 
                  else
3344 
                    emit(f,"\tnega\n\tnegb\n\tsbca\t#0\n");
3345 
                }
3346 
              }else if(!ISRACC(q2)){
3347 
                get_acc(f,p);
3348 
                if(short_add){
3349 
                  load_reg(f,acc,&p->q2,short_add);
3350 
                  if(short_add&UNSIGNED){
3351 
                    if(reg==ix){
3352 
                      emit(f,"\tabx\n");
3353 
                      store_reg(f,reg,&p->z,ztyp(p));
3354 
                      continue;
3355 
                    }else{
3356 
                      emit(f,"\tclra\n");
3357 
                    }
3358 
                  }else
3359 
                    t=CHAR;
3360 
                }else
3361 
                  load_reg(f,acc,&p->q2,t);
3362 
              }else{
3363 
                load_reg(f,reg,&p->q1,t);
3364 
                if(short_add&UNSIGNED)
3365 
                  emit(f,"\tclra\n");
3366 
                emit(f,"\tlea%s\t%s,%s\n",regnames[reg],((t&NU)==CHAR||(short_add&NU)==CHAR)?"b":"d",regnames[reg]);
3367 
                store_reg(f,reg,&p->z,ztyp(p));
3368 
                continue;
3369 
              }
3370 
              emit(f,"\tlea%s\t%s,%s\n",regnames[reg],(t&NQ)==CHAR?"b":"d",regnames[reg]);
3371 
            }
3372 
          }
3373 
        }
3374 
        store_reg(f,reg,&p->z,ztyp(p));
3375 
        continue;
3376 
      }
3377 
      if(c!=LSHIFT&&c!=RSHIFT)
3378 
        load_reg(f,reg,&p->q1,t);
3379 
      if(c==MULT){
3380 
        if(CPU==6812){
3381 
          int py=0;
3382 
          if(reg!=acc) ierror(reg);
3383 
          if(!ISRY(q2)&&regs[iy]){
3384 
            emit(f,"\tpshy\n");
3385 
            push(2);
3386 
            py=1;
3387 
          }
3388 
          load_reg(f,iy,&p->q2,t);
3389 
          emit(f,"\temul\n");
3390 
          if(py){
3391 
            emit(f,SPULL("y"));
3392 
            pop(2);
3393 
          }
3394 
          store_reg(f,acc,&p->z,t);
3395 
          continue;
3396 
        }else
3397 
          ierror(0);
3398 
      }
3399 
      if(c==LSHIFT||c==RSHIFT){
3400 
        if(isconst(q2)){
3401 
          int l,oldl;
3402 
          load_reg(f,acc,&p->q1,t);
3403 
          eval_const(&p->q2.val,t);
3404 
          oldl=l=zm2l(vmax);
3405 
          if(l>=24){
3406 
            if(CPU!=6812&&!optsize)
3407 
              emit(f,"\tldd\t#0\n");
3408 
            else
3409 
              emit(f,"\tclra\n\tclrb\n");
3410 
            l=0;
3411 
          }
3412 
          if(l>=8){
3413 
            if(c==LSHIFT)
3414 
              emit(f,"\t%s\n\tclrb\n",(CPU==6812)?"tba":"tfr\tb,a");
3415 
            else{
3416 
              if(t&UNSIGNED)
3417 
                emit(f,"\ttfr\ta,b\n\tclra\n");
3418 
              else{
3419 
                emit(f,"\ttfr\ta,b\n");
3420 
                emit(f,SEX);
3421 
              }
3422 
            }
3423 
            l-=8;
3424 
          }
3425 
          while(l--){
3426 
            if(c==RSHIFT){
3427 
              if(t&UNSIGNED){
3428 
                if((t&NQ)==CHAR)
3429 
                  emit(f,"\tlsrb\n");
3430 
                else
3431 
                  emit(f,CPU==6809?"\tlsra\n\trorb\n":"\tlsrd\n");
3432 
              }else{
3433 
                if(oldl>12||(t&NQ)==CHAR)
3434 
                  emit(f,"\tasrb\n");
3435 
                else
3436 
                  emit(f,"\tasra\n\trorb\n");
3437 
              }
3438 
            }else{
3439 
              if((t&NQ)==CHAR)
3440 
                emit(f,"\taslb\n");
3441 
              else
3442 
                emit(f,CPU==6809?"\taslb\n\trola\n":"\tasld\n");
3443 
            }
3444 
          }
3445 
        }else{
3446 
          int px;char *s;
3447 
          if(regs[ix]&&!scratchreg(ix,p)&&(!isreg(z)||p->z.reg!=ix)){
3448 
            emit(f,SPUSH("x"));
3449 
            push(2);px=1;
3450 
          }else
3451 
            px=0;
3452 
          if((p->typf2&NQ)==CHAR){
3453 
            load_reg(f,acc,&p->q2,p->typf2);
3454 
            emit(f,(p->typf2&UNSIGNED)?"\tclra\n":SEX);
3455 
            emit(f,"\ttfr\td,x\n");
3456 
          }else
3457 
            load_reg(f,ix,&p->q2,t);
3458 
          load_reg(f,acc,&p->q1,p->typf);
3459 
          if((t&NQ)==CHAR)
3460 
            emit(f,(p->typf2&UNSIGNED)?"\tclra\n":SEX);
3461 
          if(c==LSHIFT) s="lsl";
3462 
          else if(t&UNSIGNED) s="lsr";
3463 
          else s="asr";
3464 
          emit(f,"\t.global\t%s__%s\n",idprefix,s);
3465 
          emit(f,"\t%s\t%s__%s\n",jsrinst,idprefix,s);
3466 
          if(px){
3467 
            emit(f,SPULL("x"));
3468 
            /*emit(f,"\tpul%s\n",regnames[ix]);*/
3469 
            pop(2);
3470 
          }
3471 
        }
3472 
        cc=0;
3473 
        store_reg(f,acc,&p->z,t);
3474 
        continue;
3475 
      }
3476 
      if(c>=OR&&c<=AND){
3477 
        s=logicals[c-OR];
3478 
        if(p->q2.am&&p->q2.am->flags==ACC_IND){
3479 
          mobj=p->q1;p->q1=p->q2;p->q2=mobj;
3480 
        }
3481 
        if(p->q2.flags&KONST){
3482 
          unsigned long l,h;
3483 
          eval_const(&p->q2.val,t);
3484 
          l=zum2ul(vumax);
3485 
          if((t&NQ)!=CHAR){
3486 
            h=(l>>bitsperbyte)&bytemask;
3487 
            if(c==AND&&h==0)
3488 
              emit(f,"\tclra\n");
3489 
            else if(c==XOR&&h==bytemask)
3490 
              emit(f,"\tcoma\n");
3491 
            else if((c==AND&&h!=bytemask)||(c==OR&&h!=0)||(c==XOR&&h!=0))
3492 
              emit(f,"\t%sa\t#%lu\n",s,h);
3493 
          }
3494 
          h=l&bytemask;
3495 
          if(c==AND&&h==0)
3496 
            emit(f,"\tclrb\n");
3497 
          else if(c==XOR&&h==bytemask)
3498 
            emit(f,"\tcomb\n");
3499 
          else if((c==AND&&h!=bytemask)||(c==OR&&h!=0)||(c==XOR&&h!=0))
3500 
            emit(f,"\t%sb\t#%lu\n",s,h);
3501 
        }else{
3502 
          if(isreg(q2)){
3503 
            if(p->q2.reg==acc){
3504 
              if(c==XOR){
3505 
                emit(f,"\tclrb\n");
3506 
                if((t&NQ)!=CHAR) emit(f,"\tclra\n");
3507 
              }
3508 
            }else{
3509 
              if((t&NQ)==CHAR){
3510 
                emit(f,SPUSH("a"));
3511 
                push(1);
3512 
                emit(f,"\t%sa\t%s,%s+\n",s,CPU==6812?"1":"",regnames[sp]);
3513 
                pop(1);
3514 
              }else{
3515 
                emit(f,"\t%s%s\n",(CPU==6812)?"psh":"pshs\t",regnames[p->q2.reg]);
3516 
                push(2);
3517 
                emit(f,"\t%sa\t%s,%s+\n",s,CPU==6812?"1":"",regnames[sp]);
3518 
                emit(f,"\t%sb\t%s,%s+\n",s,CPU==6812?"1":"",regnames[sp]);
3519 
                pop(2);
3520 
              }
3521 
            }
3522 
          }else if((p->q2.flags&(REG|DREFOBJ))==DREFOBJ&&(t&NQ)!=CHAR){
3523 
            int xr=0;
3524 
            if(!regs[ix]) xr=ix;
3525 
            else if(!regs[iy]) xr=iy;
3526 
            else{
3527 
              xr=ix;
3528 
              emit(f,"\t%s%s\n",(CPU==6812)?"psh":"pshs\t",regnames[xr]);
3529 
              push(2);
3530 
 
3531 
            }
3532 
            BSET(regs_modified,xr);
3533 
            load_addr(f,xr,&p->q2);
3534 
            if((t&NQ)==CHAR)
3535 
              emit(f,"\t%sb\t0,%s\n",s,regnames[xr]);
3536 
            else{
3537 
              emit(f,"\t%sa\t0,%s\n",s,regnames[xr]);
3538 
              emit(f,"\t%sb\t1,%s\n",s,regnames[xr]);
3539 
            }
3540 
            if(regs[ix]&&xr==ix){
3541 
              emit(f,SPULL("x"));
3542 
              pop(2);
3543 
            }
3544 
          }else{
3545 
            emit(f,"\t%sb\t",s);
3546 
            if((t&NQ)!=CHAR) inc_addr(&p->q2,1,t);
3547 
            emit_obj(f,&p->q2,t);
3548 
            emit(f,"\n");
3549 
            if((t&NQ)!=CHAR){
3550 
              inc_addr(&p->q2,-1,t);
3551 
              emit(f,"\t%sa\t",s);
3552 
              emit_obj(f,&p->q2,t);
3553 
              emit(f,"\n");
3554 
            }
3555 
          }
3556 
        }
3557 
        cc=0;
3558 
        store_reg(f,reg,&p->z,t);
3559 
        continue;
3560 
      }else if(c==COMPARE){
3561 
        lastcomp=t;
3562 
        if(isreg(q2)){
3563 
          emit(f,"\t%s%s\n",(CPU==6812)?"psh":"pshs\t",regnames[p->q2.reg]);
3564 
          push(2);
3565 
        }
3566 
        if(reg==acc){
3567 
          if((t&NQ)==CHAR)
3568 
            emit(f,"\tcmpb\t");
3569 
          else
3570 
            emit(f,SCMP("d"));
3571 
        }else if(reg==ix){
3572 
          emit(f,SCMP("x"));
3573 
        }else if(reg==iy){
3574 
          emit(f,SCMP("y"));
3575 
        }else if(reg==iu){
3576 
          emit(f,SCMP("u"));
3577 
        }else
3578 
          ierror(0);
3579 
        if(isreg(q2)){
3580 
          if(CPU==6812)
3581 
            emit(f,"2,%s+\n",regnames[sp]);
3582 
          else
3583 
            emit(f,",%s++\n",regnames[sp]);
3584 
          pop(2);
3585 
        }else{
3586 
          emit_obj(f,&p->q2,t);emit(f,"\n");
3587 
        }
3588 
        continue;
3589 
      }
3590 
      ierror(0);
3591 
    }
3592 
    pric2(stdout,p);
3593 
    ierror(0);
3594 
  }
3595 
  if(notpopped){
3596 
    gen_pop(f,notpopped);
3597 
    notpopped=0;
3598 
  }
3599 
  function_bottom(f,v,loff);
3600 
  if(debug_info){
3601 
    emit(f,"%s%d:\n",labprefix,++label);
3602 
    dwarf2_function(f,v,label);
3603 
    if(f) section=-1;
3604 
  }
3605 
}
3606 
 
3607 
int shortcut(int c,int t)
3608 
{
3609 
  if(c==COMPARE||c==ADD||c==SUB||c==AND||c==OR||c==XOR) return 1;
3610 
  if((c==LSHIFT||c==RSHIFT)&&ISCHWORD(t&NQ)) return 1;
3611 
  return 0;
3612 
}
3613 
 
3614 
void cleanup_cg(FILE *f)
3615 
{
3616 
  struct fpconstlist *p;
3617 
  unsigned char *ip;
3618 
  if(f&&stack_check)
3619 
    emit(f,"\t.global\t%s__stack_check\n",idprefix);
3620 
  while(p=firstfpc){
3621 
    if(f){
3622 
      if(section!=RODATA){
3623 
        emit(f,rodataname);if(f) section=RODATA;
3624 
      }
3625 
      emit(f,"%s%d\n\t%s\t",labprefix,p->label,dct[LONG]);
3626 
      ip=(unsigned char *)&p->val.vdouble;
3627 
      emit(f,"0x%02x%02x%02x%02x",ip[0],ip[1],ip[2],ip[3]);
3628 
      if((p->typ&NQ)==DOUBLE||(p->typ&NQ)==LDOUBLE){
3629 
        emit(f,",0x%02x%02x%02x%02x",ip[4],ip[5],ip[6],ip[7]);
3630 
      }
3631 
      emit(f,"\n");
3632 
    }
3633 
    firstfpc=p->next;
3634 
    free(p);
3635 
  }
3636 
}
3637 
 
3638 
int reg_parm(struct reg_handle *p,struct Typ *t,int mode,struct Typ *fkt)
3639 
{
3640 
  if(p->gpr) return 0;
3641 
  if(ISSCALAR(t->flags)&&!ISFLOAT(t->flags)&&!ISLWORD(t->flags)){
3642 
    p->gpr=1;
3643 
    return acc;
3644 
  }
3645 
  return 0;
3646 
}
3647 
 
3648 
void insert_const(union atyps *p,int t)
3649 
/*  Traegt Konstante in entprechendes Feld ein.       */
3650 
{
3651 
  if(!p) ierror(0);
3652 
  t&=NU;
3653 
  if(t==BIT) {if(zmeqto(zc2zm(vchar),l2zm(0L))) p->vchar=zm2zc(l2zm(0L)); else p->vchar=zm2zc(l2zm(1L));return;}
3654 
  if(t==CHAR) {p->vchar=vchar;return;}
3655 
  if(t==SHORT) {p->vshort=vshort;return;}
3656 
  if(t==INT) {p->vint=vint;return;}
3657 
  if(t==LONG) {p->vlong=vlong;return;}
3658 
  if(t==LLONG) {p->vllong=vllong;return;}
3659 
  if(t==MAXINT) {p->vmax=vmax;return;}
3660 
  if(t==(UNSIGNED|BIT)) {if(zumeqto(zuc2zum(vuchar),ul2zum(0UL))) p->vuchar=zum2zuc(ul2zum(0UL)); else p->vuchar=zum2zuc(ul2zum(1UL));return;}
3661 
  if(t==(UNSIGNED|CHAR)) {p->vuchar=vuchar;return;}
3662 
  if(t==(UNSIGNED|SHORT)) {p->vushort=vushort;return;}
3663 
  if(t==(UNSIGNED|INT)) {p->vuint=vuint;return;}
3664 
  if(t==(UNSIGNED|LONG)) {p->vulong=vulong;return;}
3665 
  if(t==(UNSIGNED|LLONG)) {p->vullong=vullong;return;}
3666 
  if(t==(UNSIGNED|MAXINT)) {p->vumax=vumax;return;}
3667 
  if(t==FLOAT) {p->vfloat=vfloat;return;}
3668 
  if(t==DOUBLE) {p->vdouble=vdouble;return;}
3669 
  if(t==LDOUBLE) {p->vldouble=vldouble;return;}
3670 
  if(t==NPOINTER) {p->vuint=vuint;return;}
3671 
  if(t==FPOINTER||t==HPOINTER) {p->vulong=vulong;return;}
3672 
}
3673 
void eval_const(union atyps *p,int t)
3674 
/*  Weist bestimmten globalen Variablen Wert einer CEXPR zu.       */
3675 
{
3676 
  int f=t&NQ;
3677 
  if(!p) ierror(0);
3678 
  if(f==MAXINT||(f>=BIT&&f<=LLONG)){
3679 
    if(!(t&UNSIGNED)){
3680 
      if(f==BIT){
3681 
        if(zmeqto(zc2zm(p->vchar),l2zm(0L))) vmax=l2zm(0L); else vmax=l2zm(1L);
3682 
      }else if(f==CHAR) vmax=zc2zm(p->vchar);
3683 
      else if(f==SHORT)vmax=zs2zm(p->vshort);
3684 
      else if(f==INT)  vmax=zi2zm(p->vint);
3685 
      else if(f==LONG) vmax=zl2zm(p->vlong);
3686 
      else if(f==LLONG) vmax=zll2zm(p->vllong);
3687 
      else if(f==MAXINT) vmax=p->vmax;
3688 
      else ierror(0);
3689 
      vumax=zm2zum(vmax);
3690 
      vldouble=zm2zld(vmax);
3691 
    }else{
3692 
      if(f==BIT){
3693 
        if(zumeqto(zuc2zum(p->vuchar),ul2zum(0UL))) vumax=ul2zum(0UL); else vumax=ul2zum(1UL);
3694 
      }else if(f==CHAR) vumax=zuc2zum(p->vuchar);
3695 
      else if(f==SHORT)vumax=zus2zum(p->vushort);
3696 
      else if(f==INT)  vumax=zui2zum(p->vuint);
3697 
      else if(f==LONG) vumax=zul2zum(p->vulong);
3698 
      else if(f==LLONG) vumax=zull2zum(p->vullong);
3699 
      else if(f==MAXINT) vumax=p->vumax;
3700 
      else ierror(0);
3701 
      vmax=zum2zm(vumax);
3702 
      vldouble=zum2zld(vumax);
3703 
    }
3704 
  }else{
3705 
    if(ISPOINTER(f)){
3706 
      if(f==NPOINTER)
3707 
        vumax=zui2zum(p->vuint);
3708 
      else
3709 
        vumax=zul2zum(p->vulong);
3710 
      vmax=zum2zm(vumax);vldouble=zum2zld(vumax);
3711 
    }else{
3712 
      if(f==FLOAT) vldouble=zf2zld(p->vfloat);
3713 
      else if(f==DOUBLE) vldouble=zd2zld(p->vdouble);
3714 
      else vldouble=p->vldouble;
3715 
      vmax=zld2zm(vldouble);
3716 
      vumax=zld2zum(vldouble);
3717 
    }
3718 
  }
3719 
  vfloat=zld2zf(vldouble);
3720 
  vdouble=zld2zd(vldouble);
3721 
  vuchar=zum2zuc(vumax);
3722 
  vushort=zum2zus(vumax);
3723 
  vuint=zum2zui(vumax);
3724 
  vulong=zum2zul(vumax);
3725 
  vullong=zum2zull(vumax);
3726 
  vchar=zm2zc(vmax);
3727 
  vshort=zm2zs(vmax);
3728 
  vint=zm2zi(vmax);
3729 
  vlong=zm2zl(vmax);
3730 
  vllong=zm2zll(vmax);
3731 
}
3732 
void printval(FILE *f,union atyps *p,int t)
3733 
/*  Gibt atyps aus.                                     */
3734 
{
3735 
  t&=NU;
3736 
  if(t==BIT){vmax=zc2zm(p->vchar);fprintf(f,"B%d",!zmeqto(vmax,l2zm(0L)));}
3737 
  if(t==(UNSIGNED|BIT)){vumax=zuc2zum(p->vuchar);fprintf(f,"UB%d",!zumeqto(vmax,ul2zum(0UL)));}
3738 
  if(t==CHAR){vmax=zc2zm(p->vchar);printzm(f,vmax);}
3739 
  if(t==(UNSIGNED|CHAR)){fprintf(f,"UC");vumax=zuc2zum(p->vuchar);printzum(f,vumax);}
3740 
  if(t==SHORT){fprintf(f,"S");vmax=zs2zm(p->vshort);printzm(f,vmax);}
3741 
  if(t==(UNSIGNED|SHORT)){fprintf(f,"US");vumax=zus2zum(p->vushort);printzum(f,vumax);}
3742 
  if(t==FLOAT){fprintf(f,"F");vldouble=zf2zld(p->vfloat);printzld(f,vldouble);}
3743 
  if(t==DOUBLE){fprintf(f,"D");vldouble=zd2zld(p->vdouble);printzld(f,vldouble);}
3744 
  if(t==LDOUBLE){fprintf(f,"LD");printzld(f,p->vldouble);}
3745 
  if(t==INT){fprintf(f,"I");vmax=zi2zm(p->vint);printzm(f,vmax);}
3746 
  if(t==(UNSIGNED|INT)||t==NPOINTER){fprintf(f,"UI");vumax=zui2zum(p->vuint);printzum(f,vumax);}
3747 
  if(t==LONG){fprintf(f,"L");vmax=zl2zm(p->vlong);printzm(f,vmax);}
3748 
  if(t==(UNSIGNED|LONG)||t==FPOINTER||t==HPOINTER){fprintf(f,"UL");vumax=zul2zum(p->vulong);printzum(f,vumax);}
3749 
  if(t==LLONG){fprintf(f,"LL");vmax=zll2zm(p->vllong);printzm(f,vmax);}
3750 
  if(t==(UNSIGNED|LLONG)){fprintf(f,"ULL");vumax=zull2zum(p->vullong);printzum(f,vumax);}
3751 
  if(t==MAXINT) printzm(f,p->vmax);
3752 
  if(t==(UNSIGNED|MAXINT)) printzum(f,p->vumax);
3753 
}
3754 
void emitval(FILE *f,union atyps *p,int t)
3755 
{
3756 
  t&=NU;
3757 
  if((t&NQ)==NPOINTER) t=(UNSIGNED|INT);
3758 
  if(t==BIT){vmax=zc2zm(p->vchar);emit(f,"%d",!zmeqto(vmax,l2zm(0L)));}
3759 
  if(t==(UNSIGNED|BIT)){vumax=zuc2zum(p->vuchar);emit(f,"%d",!zumeqto(vmax,ul2zum(0UL)));}
3760 
  if(t==CHAR){vmax=zc2zm(p->vchar);emitzm(f,vmax);}
3761 
  if(t==(UNSIGNED|CHAR)){vumax=zuc2zum(p->vuchar);emitzum(f,vumax);}
3762 
  if(t==SHORT){vmax=zs2zm(p->vshort);emitzm(f,vmax);}
3763 
  if(t==(UNSIGNED|SHORT)){vumax=zus2zum(p->vushort);emitzum(f,vumax);}
3764 
  if(t==FLOAT){vldouble=zf2zld(p->vfloat);emitzld(f,vldouble);}
3765 
  if(t==DOUBLE){vldouble=zd2zld(p->vdouble);emitzld(f,vldouble);}
3766 
  if(t==LDOUBLE){emitzld(f,p->vldouble);}
3767 
  if(t==INT){vmax=zi2zm(p->vint);emitzm(f,vmax);}
3768 
  if(t==(UNSIGNED|INT)||t==NPOINTER){vumax=zui2zum(p->vuint);emitzum(f,vumax);}
3769 
  if(t==LONG){vmax=zl2zm(p->vlong);emitzm(f,vmax);}
3770 
  if(t==(UNSIGNED|LONG)||t==FPOINTER||t==HPOINTER){vumax=zul2zum(p->vulong);emitzum(f,vumax);}
3771 
  if(t==LLONG){vmax=zll2zm(p->vllong);emitzm(f,vmax);}
3772 
  if(t==(UNSIGNED|LLONG)){vumax=zull2zum(p->vullong);emitzum(f,vumax);}
3773 
  if(t==MAXINT) emitzm(f,p->vmax);
3774 
  if(t==(UNSIGNED|MAXINT)) emitzum(f,p->vumax);
3775 
}
3776 
 
3777 
void conv_typ(struct Typ *p)
3778 
/* Erzeugt extended types in einem Typ. */
3779 
{
3780 
  char *attr;
3781 
  while(p){
3782 
    if(ISPOINTER(p->flags)){
3783 
      p->flags=((p->flags&~NU)|POINTER_TYPE(p->next));
3784 
      if(attr=p->next->attr){
3785 
        if(strstr(attr,STR_NEAR))
3786 
          p->flags=((p->flags&~NU)|NPOINTER);
3787 
        if(strstr(attr,STR_FAR))
3788 
          p->flags=((p->flags&~NU)|FPOINTER);
3789 
        if(strstr(attr,STR_HUGE))
3790 
          p->flags=((p->flags&~NU)|HPOINTER);
3791 
      }
3792 
    }
3793 
    if(ISINT(p->flags)&&(attr=p->attr)&&strstr(attr,"bit"))
3794 
      p->flags=((p->flags&~NU)|BIT);
3795 
    p=p->next;
3796 
  }
3797 
}
3798 
 
3799 
void init_db(FILE *f)
3800 
{
3801 
  dwarf2_setup(sizetab[HPOINTER],".byte",".2byte",".4byte",".4byte",labprefix,idprefix,".section");
3802 
  dwarf2_print_comp_unit_header(f);
3803 
}
3804 
void cleanup_db(FILE *f)
3805 
{
3806 
  dwarf2_cleanup(f);
3807 
  if(f) section=-1;
3808 
}

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