| /* Test-language for vbcc. */ |
| |
| #include "supp.h" |
| |
| struct Var *fv; |
| |
| struct Typ tint,mfunc; |
| struct struct_declaration msd; /* initialized to zero */ |
| |
| void raus(void) |
| { |
| while(fv){ |
| struct Var *m=fv->next; |
| free(fv); |
| fv=m; |
| } |
| while(first_ic){ |
| struct IC *m=first_ic->next; |
| free(first_ic); |
| first_ic=m; |
| } |
| exit(0); |
| } |
| void add_IC(struct IC *new) |
| { |
| new->next=0; |
| new->prev=last_ic; |
| new->change_cnt=new->use_cnt=0; |
| new->change_list=new->use_list=0; |
| new->line=0; |
| new->file=0; |
| if(!last_ic){ |
| first_ic=new; |
| }else{ |
| last_ic->next=new; |
| } |
| last_ic=new; |
| } |
| struct Var *add_var(char *name,struct Typ *t,int sc) |
| { |
| struct Var *v=mymalloc(sizeof(*v)); |
| v->vtyp=t; |
| v->storage_class=sc; |
| v->reg=0; |
| v->identifier=name; |
| v->offset=max_offset; |
| if(sc==AUTO) max_offset=zmadd(max_offset,sizetab[t->flags&NQ]); |
| v->priority=1; |
| v->flags=0; |
| v->next=fv; |
| v->clist=0; |
| v->fi=0; |
| v->inline_copy=0; |
| fv=v; |
| return v; |
| } |
| struct Var *add_tmp_var(struct Typ *t) |
| { |
| return add_var(empty,t,AUTO); |
| } |
| struct Var *get_var(char *name) |
| { |
| struct Var *v;char *buf; |
| for(v=fv;v;v=v->next){ |
| if(!strcmp(name,v->identifier)) return v; |
| } |
| buf=mymalloc(strlen(name)+1); |
| strcpy(buf,name); |
| return add_var(buf,&tint,AUTO); |
| } |
| |
| void read_ics() |
| { |
| char s[400],q1[100],q2[100],z[100],op; |
| struct IC *new; |
| gets(s); |
| while(sscanf(s,"%99s = %99s %c %99s",z,q1,&op,q2)==4){ |
| new=new_IC(); |
| switch(op){ |
| case '+': new->code=ADD;break; |
| case '*': new->code=MULT;break; |
| case '-': new->code=SUB;break; |
| case '/': new->code=DIV;break; |
| default: return; |
| } |
| new->typf=INT; |
| new->q1.flags=new->q2.flags=new->z.flags=VAR; |
| new->q1.am=new->q2.am=new->z.am=0; |
| new->q1.val.vmax=l2zm(0L); |
| new->q2.val.vmax=l2zm(0L); |
| new->z.val.vmax=l2zm(0L); |
| new->q1.v=get_var(q1); |
| new->q2.v=get_var(q2); |
| new->z.v=get_var(z); |
| add_IC(new); |
| gets(s); |
| } |
| } |
| void error(int n,...) |
| { |
| printf("error %d\n",n); |
| raus(); |
| } |
| void savescratch() |
| {} |
| |
| main() |
| { |
| struct Var *main; |
| max_offset=l2zm(0L); |
| if(!init_cg()) raus(); |
| tint.flags=INT; |
| tint.next=0; |
| mfunc.flags=FUNKT; |
| mfunc.next=∭ |
| mfunc.exact=&msd; |
| main=add_var("main",&mfunc,EXTERN); |
| read_ics(); |
| printf("optflags: "); |
| scanf("%ld",&optflags); |
| pric(stdout,first_ic); |
| vl1=vl3=0; |
| vl2=fv; |
| optimize(optflags,main); |
| pric(stdout,first_ic); |
| gen_code(stdout,first_ic,main,max_offset); |
| raus(); |
| } |