PulkoMandy | 17fc759 | 2022-07-28 18:27:54 +0200 | [diff] [blame] | 1 | /* Test-language for vbcc. */ |
| 2 | |
| 3 | #include "supp.h" |
| 4 | |
| 5 | #include <ctype.h> |
| 6 | #include <stdio.h> |
| 7 | |
| 8 | struct Var *fv; |
| 9 | |
| 10 | struct Typ tint,mfunc; |
| 11 | struct struct_declaration msd; /* initialized to zero */ |
| 12 | |
| 13 | FILE *file; |
| 14 | char *next; |
| 15 | |
| 16 | struct obj expression(),factor(),scalar(); |
| 17 | |
| 18 | void raus(void) |
| 19 | { |
| 20 | while(fv){ |
| 21 | struct Var *m=fv->next; |
| 22 | free(fv); |
| 23 | fv=m; |
| 24 | } |
| 25 | while(first_ic){ |
| 26 | struct IC *m=first_ic->next; |
| 27 | free(first_ic); |
| 28 | first_ic=m; |
| 29 | } |
| 30 | exit(0); |
| 31 | } |
| 32 | void add_IC(struct IC *new) |
| 33 | { |
| 34 | new->next=0; |
| 35 | new->prev=last_ic; |
| 36 | new->change_cnt=new->use_cnt=0; |
| 37 | new->change_list=new->use_list=0; |
| 38 | new->line=0; |
| 39 | new->file=0; |
| 40 | new->q1.am=new->q2.am=new->z.am=0; |
| 41 | if(!last_ic){ |
| 42 | first_ic=new; |
| 43 | }else{ |
| 44 | last_ic->next=new; |
| 45 | } |
| 46 | last_ic=new; |
| 47 | } |
| 48 | struct Var *add_var(char *name,struct Typ *t,int sc) |
| 49 | { |
| 50 | struct Var *v=mymalloc(sizeof(*v)); |
| 51 | v->vtyp=t; |
| 52 | v->storage_class=sc; |
| 53 | v->reg=0; |
| 54 | v->identifier=name; |
| 55 | v->offset=max_offset; |
| 56 | if(sc==AUTO) max_offset=zmadd(max_offset,sizetab[t->flags&NQ]); |
| 57 | v->priority=1; |
| 58 | v->flags=0; |
| 59 | v->next=fv; |
| 60 | v->clist=0; |
| 61 | v->fi=0; |
| 62 | v->inline_copy=0; |
| 63 | v->nesting=1; |
| 64 | fv=v; |
| 65 | return v; |
| 66 | } |
| 67 | struct Var *add_tmp_var(struct Typ *t) |
| 68 | { |
| 69 | return add_var(empty,t,AUTO); |
| 70 | } |
| 71 | struct Var *get_var(char *name) |
| 72 | { |
| 73 | struct Var *v;char *buf; |
| 74 | puts("getvar"); |
| 75 | for(v=fv;v;v=v->next){ |
| 76 | if(!strcmp(name,v->identifier)) return v; |
| 77 | } |
| 78 | buf=mymalloc(strlen(name)+1); |
| 79 | strcpy(buf,name); |
| 80 | return add_var(buf,&tint,AUTO); |
| 81 | } |
| 82 | |
| 83 | char *identifier(void) |
| 84 | { |
| 85 | static char id[1024]; |
| 86 | char *s=id; |
| 87 | puts("identifier"); |
| 88 | while(isalnum(*next)) *s++=*next++; |
| 89 | puts("done"); |
| 90 | return id; |
| 91 | } |
| 92 | struct obj scalar(void) |
| 93 | { |
| 94 | struct obj o; |
| 95 | zmax val; |
| 96 | puts("scalar"); |
| 97 | if(isdigit(*next)){ |
| 98 | o.flags=KONST; |
| 99 | val=l2zm(0L); |
| 100 | while(isdigit(*next)){ |
| 101 | val=zmmult(val,l2zm(10L)); |
| 102 | val=zmadd(val,l2zm((long)(*next-'0'))); |
| 103 | next++; |
| 104 | } |
| 105 | o.val.vint=zm2zi(val); |
| 106 | return o; |
| 107 | } |
| 108 | if(*next=='('){ |
| 109 | next++; |
| 110 | o=expression(); |
| 111 | next++; |
| 112 | return o; |
| 113 | } |
| 114 | o.flags=VAR; |
| 115 | o.val.vmax=l2zm(0L); |
| 116 | o.v=get_var(identifier()); |
| 117 | return o; |
| 118 | } |
| 119 | struct obj factor(void) |
| 120 | { |
| 121 | struct obj o; |
| 122 | struct IC *new; |
| 123 | puts("factor"); |
| 124 | o=scalar(); |
| 125 | while(*next=='*'||*next=='/'){ |
| 126 | new=new_IC(); |
| 127 | if(*next=='*') new->code=MULT; else new->code=DIV; |
| 128 | next++; |
| 129 | new->typf=INT; |
| 130 | new->q1=o; |
| 131 | new->q2=scalar(); |
| 132 | o.flags=VAR; |
| 133 | o.v=add_tmp_var(&tint); |
| 134 | o.val.vmax=l2zm(0L); |
| 135 | new->z=o; |
| 136 | add_IC(new); |
| 137 | } |
| 138 | return o; |
| 139 | } |
| 140 | struct obj expression(void) |
| 141 | { |
| 142 | struct obj o; |
| 143 | struct IC *new; |
| 144 | puts("expression"); |
| 145 | o=factor(); |
| 146 | while(*next=='+'||*next=='-'){ |
| 147 | new=new_IC(); |
| 148 | if(*next=='+') new->code=ADD; else new->code=SUB; |
| 149 | next++; |
| 150 | new->typf=INT; |
| 151 | new->q1=o; |
| 152 | new->q2=factor(); |
| 153 | o.flags=VAR; |
| 154 | o.v=add_tmp_var(&tint); |
| 155 | o.val.vmax=l2zm(0L); |
| 156 | new->z=o; |
| 157 | add_IC(new); |
| 158 | } |
| 159 | return o; |
| 160 | } |
| 161 | void compile(void) |
| 162 | { |
| 163 | struct IC *new; |
| 164 | char line[1024],*s; |
| 165 | struct obj o,last; |
| 166 | puts("compile"); |
| 167 | while(fgets(line,1023,file)){ |
| 168 | next=line; |
| 169 | s=identifier(); |
| 170 | if(*next=='='){ |
| 171 | struct Var *v=get_var(s); |
| 172 | next++; |
| 173 | o=expression(); |
| 174 | new=new_IC(); |
| 175 | new->code=ASSIGN; |
| 176 | new->typf=INT; |
| 177 | new->q1=o; |
| 178 | new->z.flags=VAR; |
| 179 | new->z.v=v; |
| 180 | new->z.val.vmax=l2zm(0L); |
| 181 | new->q2.flags=0; |
| 182 | new->q2.val.vmax=sizetab[INT]; |
| 183 | last=new->z; |
| 184 | add_IC(new); |
| 185 | continue; |
| 186 | } |
| 187 | } |
| 188 | new=new_IC(); |
| 189 | new->code=SETRETURN; |
| 190 | new->typf=INT; |
| 191 | new->q1=last; |
| 192 | new->q2.flags=new->z.flags=0; |
| 193 | new->q2.val.vmax=sizetab[INT]; |
| 194 | new->z.reg=freturn(&tint); |
| 195 | if(!new->z.reg) puts("problem!"); |
| 196 | add_IC(new); |
| 197 | } |
| 198 | void error(int n,...) |
| 199 | { |
| 200 | printf("error %d\n",n); |
| 201 | raus(); |
| 202 | } |
| 203 | void savescratch() |
| 204 | {} |
| 205 | |
| 206 | main(int argc,char **argv) |
| 207 | { |
| 208 | struct Var *main; |
| 209 | max_offset=l2zm(0L); |
| 210 | if(!init_cg()) raus(); |
| 211 | tint.flags=INT; |
| 212 | tint.next=0; |
| 213 | mfunc.flags=FUNKT; |
| 214 | mfunc.next=∭ |
| 215 | mfunc.exact=&msd; |
| 216 | main=add_var("main",&mfunc,EXTERN); |
| 217 | file=fopen(argv[1],"r"); |
| 218 | if(!file) {printf("Error opening file\n");raus();} |
| 219 | compile(); |
| 220 | scanf("%ld",&optflags); |
| 221 | pric(stdout,first_ic); |
| 222 | vl1=vl3=0; |
| 223 | vl2=fv; |
| 224 | optimize(optflags,main); |
| 225 | pric(stdout,first_ic); |
| 226 | gen_code(stdout,first_ic,main,max_offset); |
| 227 | raus(); |
| 228 | } |
| 229 | |