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declaration.c
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declaration.c
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/* $VER: vbcc (declaration.c) $Revision: 1.67 $ */
#include <string.h>
#include "vbcc_cpp.h"
#include "vbc.h"
static char FILE_[]=__FILE__;
#define PLAIN_STORAGE_CLASS 7
#define PARAMETER 8
#define OLDSTYLE 16
void dynamic_init(Var *v,type *t,const_list *cl,zmax of,int noconst);
int test_assignment(type *,np);
int return_sc,return_reg,has_return,return_inline;
char *return_vattr;
static int did_return_label;
#ifdef HAVE_TARGET_ATTRIBUTES
unsigned long return_tattr;
#endif
zmax init_dyn_sz,init_const_sz;
int init_dyn_cnt,init_const_cnt;
void init_sl(struct_list *sl);
#ifdef HAVE_ECPP
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#endif
extern np gen_libcall(char *,np,type *,np,type *);
extern int float_used;
extern void optimize(long,Var *);
static void clear_main_ret(void)
{
if(c99&&!strcmp(cur_func,"main")&&return_typ&&ISSCALAR(return_typ->flags)){
/* in c99, main returns 0 if it falls from back */
IC *new=new_IC();
new->code=SETRETURN;
new->q1.val.vmax=l2zm(0L);
eval_const(&new->q1.val,MAXINT);
insert_const(&new->q1.val,return_typ->flags&NU);
new->q1.flags=KONST;
new->typf=return_typ->flags;
new->q2.val.vmax=szof(return_typ);
new->q2.flags=new->z.flags=0;
new->z.reg=freturn(return_typ);
add_IC(new);
}
}
static char *get_string(void)
/* Liest Stringkonstante und liefert Wert als String (malloced) */
{
np tree;int l;char *p;
const_list *cl;
killsp();
if(ctok->type!=T_STRING) {error(74);return 0;}
tree=string_expression();
if(!tree||tree->flags!=STRING){
error(229);
return 0;
}
cl=tree->cl;l=0;
while(cl){
l++;
cl=cl->next;
}
p=mymalloc(l);
cl=tree->cl;l=0;
while(cl){
p[l]=zm2l(zc2zm(cl->other->val.vchar));
l++;
cl=cl->next;
}
if(tree) free_expression(tree);
killsp();
return p;
}
/* checks whether string is a valid vector type */
/* returns the dimension */
static int check_vect(char *s,char *base)
{
int i=strlen(base),dim;
if(strncmp(s,base,i)) return 0;
dim=s[i];
if(dim=='2'||dim=='3'||dim=='4'||dim=='8'){
if(s[i+1]==0)
return dim-'0';
else
return 0;
}
if(s[i]=='1'&&s[i+1]=='6'&&s[i+2]==0)
return 16;
return 0;
}
int settyp(int typnew, int typold)
/* Unterroutine fuer declaration_specifiers(). */
{
if(DEBUG&2) printf("settyp: new=%d old=%d\n",typnew,typold);
if(typold==LONG&&typnew==FLOAT){ error(203); return DOUBLE;}
if(typold==LONG&&typnew==DOUBLE) return LDOUBLE;
if(c99&&typold==LONG&&typnew==LONG) return LLONG;
if(typold!=0&&typnew!=INT){error(47);return(typnew);}
if(typold==0&&typnew==INT) return(INT);
if(typold==0) return(typnew);
if(typold==SHORT||typold==LONG||typold==LLONG) return(typold);
error(48);
return(typnew);
}
#define dsc if(storage_class) error(49); if(typ||type_qualifiers) error(50)
#define XSIGNED 16384
#ifdef HAVE_MISRA
/* removed */
#endif
type *declaration_specifiers(void)
/* Erzeugt neuen Typ und gibt Zeiger darauf zurueck, */
/* parst z.B. unsigned int, bla etc. */
{
int typ=0,type_qualifiers=0,notdone,storage_class,hard_reg,have_inline;
#ifdef HAVE_ECPP
/* removed */
/* removed */
/* removed */
#endif
char *imerk,sident[MAXI],sbuff[MAXI],*attr=0,*vattr=0;
type *new=new_typ(),*t,*ts;
struct_declaration *ssd;
struct_list (*sl)[];
size_t slsz;
Var *v;
int dim;
#ifdef HAVE_TARGET_ATTRIBUTES
unsigned long tattr=0;
#endif
storage_class=hard_reg=have_inline=0;
do{
killsp();notdone=0;
if(ctok->type==NAME){
if(!strcmp("struct",ctok->name)||!strcmp("union",ctok->name)||(ecpp&&!strcmp("class",ctok->name))){
if(!strcmp("struct",ctok->name)) notdone=STRUCT;
if(!strcmp("union",ctok->name)) {
notdone=UNION;
#ifdef HAVE_MISRA
/* removed */
#endif
}
#ifdef HAVE_ECPP
/* removed */
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#endif
next_token();
killsp();
if(ctok->type!=LBRA){
cpbez(sident,1);
next_token();
killsp();
ssd=find_struct(sident,0);
#ifdef HAVE_MISRA
/* removed */
#endif
if(ssd&&ctok->type==LBRA&&find_struct(sident,nesting)&&ssd->count>0) error(13,sident);
if(!ssd||((ctok->type==LBRA||ctok->type==SEMIC)&&!find_struct(sident,nesting))){
typ=settyp(notdone,typ);
ssd=mymalloc(sizeof(*ssd));
ssd->count=0;
new->exact=ssd=add_sd(ssd,notdone);
if(!ecpp)add_struct_identifier(sident,ssd);
#ifdef HAVE_ECPP
/* removed */
/* removed */
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/* removed */
#endif
}else{
new->exact=ssd;
typ=settyp(new->flags=notdone,typ);
}
}else{
*sident=0;
typ=settyp(notdone,typ);
ssd=mymalloc(sizeof(*ssd));
ssd->count=0;
new->exact=ssd=add_sd(ssd,notdone);
}
if(ssd->typ!=notdone) error(230,sident);
#ifdef HAVE_ECPP
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#endif
if(ctok->type==LBRA){
int bfoffset,bfsize,flex_array=0,cbfo=0;
int scount;
zmax off=l2zm(0L);
next_token();
killsp();
slsz=SLSIZE;
imerk=ident;
sl=mymalloc(slsz*sizeof(struct_list));
ssd->count=0;
#ifdef HAVE_ECPP
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#endif
scount=ssd->count;
ts=declaration_specifiers();
while(ctok->type!=RBRA&&ts){
if(flex_array) error(231);
ident=sbuff;
t=declarator(clone_typ(ts));
killsp();
bfsize=bfoffset=-1;
if(ctok->type==T_COLON){
np tree;
if((ts->flags&NQ)!=INT) {
error(51);
#ifdef HAVE_MISRA
/* removed */
#endif
}
next_token();killsp();tree=assignment_expression();
if(type_expression(tree,0)){
int tsize;
if(tree->flags!=CEXPR) error(52);
if(!ISINT(tree->ntyp->flags)) error(52);
eval_const(&tree->val,tree->ntyp->flags);
bfsize=(int)zm2l(vmax);
tsize=(int)zm2l(zmmult(sizetab[t->flags&NQ],char_bit));
if(bfsize<0||bfsize>tsize||(bfsize==0&&*ident)){
error(332);bfsize=1;
}
if(bfsize+cbfo>tsize){
bfoffset=cbfo=0;
}else{
bfoffset=cbfo;
}
if(bfsize!=0)
cbfo+=bfsize;
else
cbfo=0;
}
#ifdef HAVE_MISRA
/* removed */
/* removed */
/* removed */
#endif
if(tree) free_expression(tree);
}else{
if(!ecpp&&*ident==0) error(53);
cbfo=0;
}
#ifdef HAVE_ECPP
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#endif
if(type_uncomplete(t)){
if(!c99||notdone!=STRUCT||flex_array||(t->flags&NQ)!=ARRAY||type_uncomplete(t->next)){
error(14,sbuff);
freetyp(t);
break;
}else{
flex_array=1;
}
}
if(ISARRAY(t->flags)&&t->dsize){
error(352,sbuff);
}
if(ISFUNC(t->flags)){
if(!ecpp){
error(15,sbuff);
}
}
if(*ident!=0){
int i=scount;
while(--i>=0)
if(!strcmp((*sl)[i].identifier,ident))
error(16,ident);
}
#ifdef HAVE_MISRA
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#endif
#ifdef HAVE_ECPP
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#endif
(*sl)[scount].bfoffset=bfoffset;
(*sl)[scount].bfsize=bfsize;
(*sl)[scount].styp=t;
if(!ecpp) (*sl)[scount].identifier=add_identifier(ident,strlen(ident));
#ifdef HAVE_ECPP
/* removed */
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#endif
if(pack_align>0&&pack_align<falign(t))
(*sl)[scount].align=pack_align;
else
(*sl)[scount].align=falign(t);
{
zmax m,al=(*sl)[scount].align;
zmax sz=szof(t);
m=off;
if((zmeqto(al,l2zm(0L))||zmeqto(sz,l2zm(0L)))&&!flex_array){
if (!ecpp){
error(316,ident);
}
}else{
off=zmmult(zmdiv(zmadd(off,zmsub(al,l2zm(1L))),al),al);
if(!zmeqto(m,off)) error(306,ident);
if(!flex_array){
m=zmmult(zmdiv(zmadd(off,zmsub(sz,l2zm(1L))),sz),sz);
if(!zmeqto(m,off)) error(307,ident);
off=zmadd(off,sz);
}
}
}
scount++;
if(scount>=slsz-1){
slsz+=SLSIZE;
sl=myrealloc(sl,slsz*sizeof(struct_list));
}
killsp();
if(ctok->type==COMMA) {next_token();killsp();continue;}
if(ctok->type!=SEMIC) error(54); else next_token();
killsp();
#ifdef HAVE_ECPP
/* removed */
#endif
if(ctok->type!=RBRA){
if(ts) freetyp(ts);
ts=declaration_specifiers();killsp();
}
}
if(ts) freetyp(ts);
ssd->count=scount;
if(ssd->count==0) error(55);
#ifdef HAVE_ECPP
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#endif
ident=imerk;
add_sl(ssd,sl);
free(sl);
if(ctok->type!=RBRA) error(56); else next_token();
new->flags=notdone|type_qualifiers;
}
#ifdef HAVE_ECPP
/* removed */
#endif
notdone=1;
}else if(!strcmp("enum",ctok->name)){
/* enumerations; die Namen werden leider noch ignoriert */
next_token();killsp();notdone=1;
if(ctok->type!=LBRA){cpbez(buff,1);next_token();killsp();}
if(ctok->type==LBRA){
/* mode: 0=start 1=first was not init 2=first was init 3=more init */
zmax val; Var *v; type *t;int mode=0;
val=l2zm(0L);
next_token();killsp();
while(ctok->type!=RBRA){
cpbez(sident,1);next_token();killsp();
if(*sident==0) {error(56);break;}
t=new_typ();
t->flags=CONST|INT;
if(find_var(sident,nesting)) error(17,sident);
v=add_var(sident,t,AUTO,0); /* AUTO hier klug? */
if(ctok->type==ASGN){
if(mode==2) mode=3;
if(mode==0) mode=2;
#ifdef HAVE_MISRA /* MISRA Rule 9.3 checking */
/* removed */
#endif
next_token();killsp();
v->clist=initialization(v->vtyp,0,0,0,0,0);
val=zi2zm(v->clist->val.vint);killsp();
}else{
if(mode==0) mode=1;
#ifdef HAVE_MISRA /* MISRA Rule 9.3 checking */
/* removed */
#endif
v->clist=mymalloc(CLS);
v->clist->val.vint=zm2zi(val);
v->clist->next=v->clist->other=0;
v->clist->tree=0;
v->clist->idx=l2zm(0L);
}
vmax=l2zm(1L);val=zmadd(val,vmax);
v->vtyp->flags=CONST|ENUM;
if(ctok->type!=RBRA&&ctok->type!=COMMA) {error(56);break;}
if(ctok->type==COMMA) next_token();
killsp();
if(ctok->type==RBRA) {next_token(); break;}
}
}
killsp();
typ=settyp(INT,typ);
}else if(!strcmp("__readsmem",ctok->name)||!strcmp("__writesmem",ctok->name)){
enum {READS,WRITES} op;
char *imerk,tbuf[MAXI];
type *tmp;
if(!strcmp("__readsmem",ctok->name))
op=READS;
else
op=WRITES;
next_token();killsp();
if(ctok->type==LPAR) next_token(); else error(151);
imerk=ident;ident=tbuf;
tmp=declarator(declaration_specifiers());
ident=imerk;
if(tmp){
if(vattr)
vattr=myrealloc(vattr,strlen(vattr)+25);
else{
vattr=mymalloc(25);
vattr[0]=0;
}
sprintf(vattr+strlen(vattr),";%s(%d)",op==READS?"readmem":"writemem",tmp->flags);
}
killsp();
if(ctok->type==RPAR) next_token(); else error(59);
killsp();
notdone=1;
}else if(!strcmp("void",ctok->name)){
next_token();
typ=settyp(VOID,typ);notdone=1;
}else if(!strcmp("char",ctok->name)){
#ifdef HAVE_MISRA
/* removed */
/* removed */
#endif
next_token();
typ=settyp(CHAR,typ);
notdone=1;
if(default_unsigned&&!(type_qualifiers&XSIGNED))
type_qualifiers|=UNSIGNED;
}else if(!strcmp("short",ctok->name)){
#ifdef HAVE_MISRA
/* removed */
#endif
next_token();
typ=settyp(SHORT,typ);notdone=1;
}else if(!strcmp("int",ctok->name)){
#ifdef HAVE_MISRA
/* removed */
#endif
next_token();
typ=settyp(INT,typ);notdone=1;
}else if(!strcmp("long",ctok->name)){
#ifdef HAVE_MISRA
/* removed */
#endif
next_token();
typ=settyp(LONG,typ);notdone=1;
}else if(!strcmp("float",ctok->name)){
#ifdef HAVE_MISRA
/* removed */
#endif
next_token();
typ=settyp(FLOAT,typ);notdone=1;
}else if(!strcmp("double",ctok->name)){
#ifdef HAVE_MISRA
/* removed */
#endif
next_token();
typ=settyp(DOUBLE,typ);notdone=1;
}else if(!strcmp("const",ctok->name)){
next_token();
if(type_qualifiers&CONST) error(58);
type_qualifiers|=CONST;notdone=1;
}else if(!strcmp("volatile",ctok->name)){
next_token();
if(type_qualifiers&VOLATILE) error(58);
type_qualifiers|=VOLATILE;notdone=1;
}else if(opencl&&(dim=check_vect(ctok->name,"bool"))){
next_token();
typ=settyp(VECBOOL+dim-1,typ);
notdone=1;
}else if(opencl&&(dim=check_vect(ctok->name,"char"))){
next_token();
typ=settyp(VECCHAR+dim-1,typ);
notdone=1;
}else if(opencl&&(dim=check_vect(ctok->name,"uchar"))){
next_token();
typ=settyp((VECCHAR+dim-1)|UNSIGNED,typ);
notdone=1;
}else if(opencl&&(dim=check_vect(ctok->name,"short"))){
next_token();
typ=settyp(VECSHORT+dim-1,typ);
notdone=1;
}else if(opencl&&(dim=check_vect(ctok->name,"ushort"))){
next_token();
typ=settyp((VECSHORT+dim-1)|UNSIGNED,typ);
notdone=1;
}else if(opencl&&(dim=check_vect(ctok->name,"int"))){
next_token();
typ=settyp(VECINT+dim-1,typ);
notdone=1;
}else if(opencl&&(dim=check_vect(ctok->name,"uint"))){
next_token();
typ=settyp((VECINT+dim-1)|UNSIGNED,typ);
notdone=1;
}else if(opencl&&(dim=check_vect(ctok->name,"long"))){
next_token();
typ=settyp(VECLONG+dim-1,typ);
notdone=1;
}else if(opencl&&(dim=check_vect(ctok->name,"ulong"))){
next_token();
typ=settyp((VECLONG+dim-1)|UNSIGNED,typ);
notdone=1;
}else if(opencl&&(dim=check_vect(ctok->name,"float"))){
next_token();
typ=settyp(VECFLOAT+dim-1,typ);
notdone=1;
#if 0
}else if(c99&&!strcmp("restrict",ctok->name)){
next_token();
if(type_qualifiers&RESTRICT) error(58);
type_qualifiers|=RESTRICT;notdone=1;
#endif
}else if(!strcmp("unsigned",ctok->name)){
next_token();
if(type_qualifiers&(XSIGNED|UNSIGNED)) error(58);
notdone=1;type_qualifiers|=UNSIGNED;
}else if(!strcmp("signed",ctok->name)){
next_token();
if(type_qualifiers&(XSIGNED|UNSIGNED)) error(58);
notdone=1;type_qualifiers|=XSIGNED;
}else if(!strcmp("auto",ctok->name)){
next_token();
dsc;storage_class=AUTO;notdone=1;
}else if(!strcmp("register",ctok->name)){
#ifdef HAVE_MISRA
/* removed */
#endif
next_token();
dsc;storage_class=REGISTER;notdone=1;
}else if(!strcmp("static",ctok->name)){
next_token();
dsc;storage_class=STATIC;notdone=1;
#ifdef HAVE_ECPP
/* removed */
#endif
}else if(!strcmp("extern",ctok->name)){
next_token();
dsc;storage_class=EXTERN;notdone=1;
}else if(!strcmp("typedef",ctok->name)){
next_token();
dsc;storage_class=TYPEDEF;notdone=1;
}else if(c99&&!strcmp("inline",ctok->name)){
next_token();
have_inline=1;notdone=1;
#ifdef HAVE_ECPP
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
#endif
}else if(/*!(c_flags[7]&USEDFLAG)&&*/!strcmp("__reg",ctok->name)){
char *d;
next_token();killsp();
if(ctok->type==LPAR) next_token(); else error(151);
killsp();
if(d=get_string()){
for(hard_reg=1;hard_reg<=MAXR;hard_reg++){
if(!strcmp(d,regnames[hard_reg])) break;
}
if(hard_reg>MAXR){ hard_reg=0;error(220,d);}
notdone=1;
free(d);
}
killsp();
if(ctok->type==RPAR) next_token(); else error(59);
killsp();
}else if(/*!(c_flags[7]&USEDFLAG)&&*/!strcmp("__attr",ctok->name)){
char *d;
next_token();killsp();
if(ctok->type==LPAR) next_token(); else error(151);
killsp();
if(d=get_string()){
if(!attr){
attr=d;
}else{
attr=myrealloc(attr,strlen(attr)+strlen(d)+2);
strcat(attr,";");
strcat(attr,d);
free(d);
}
notdone=1;
}
killsp();
if(ctok->type==RPAR) next_token(); else error(59);
killsp();
}else if(/*!(c_flags[7]&USEDFLAG)&&*/!strcmp("__vattr",ctok->name)){
char *d;
next_token();killsp();
if(ctok->type==LPAR) next_token(); else error(151);
killsp();
if(d=get_string()){
if(!vattr){
vattr=d;
}else{
vattr=myrealloc(vattr,strlen(vattr)+strlen(d)+2);
strcat(vattr,";");
strcat(vattr,d);
free(d);
}
notdone=1;
}
killsp();
if(ctok->type==RPAR) next_token(); else error(59);
killsp();
}else{
#ifdef HAVE_TARGET_ATTRIBUTES
int i;
for(i=0;g_attr_name[i];i++){
if(!strcmp(g_attr_name[i],ctok->name)){
if(tattr&(1L<<i)) error(227,ctok->name);
tattr|=(1L<<i);
next_token();
notdone=1;break;
}
}
#endif
if(!notdone&&typ==0&&!(type_qualifiers&(XSIGNED|UNSIGNED))){
v=find_var(ctok->name,0);
if(v&&v->storage_class==TYPEDEF){
free(new);
new=clone_typ(v->vtyp);
typ=settyp(new->flags,typ);
notdone=1;
next_token();
}
#ifdef HAVE_ECPP
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
#endif
}
}
}
#ifdef HAVE_ECPP
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
/* removed */
#endif
if(DEBUG&2) printf("typ:%d\n",typ);
}while(notdone);
killsp();
return_sc=storage_class;
return_reg=hard_reg;
return_vattr=vattr;
return_inline=have_inline;
#ifdef HAVE_ECPP
/* removed */
/* removed */
/* removed */
/* removed */
#endif
#ifdef HAVE_TARGET_ATTRIBUTES
return_tattr=tattr;
#endif
if(typ==0){
if(storage_class==0&&type_qualifiers==0&&!hard_reg){
free(new);
return 0;
}
#ifdef HAVE_MISRA
/* removed */
#endif
typ=INT;
}
if(type_qualifiers&(XSIGNED|UNSIGNED))
if(!ISINT(typ))
error(58);
new->flags=typ|type_qualifiers;
new->attr=attr;