make_param(register struct Paramblock *p, expptr e)
#endif
{
register expptr q;
struct Constblock qc;
p->vclass = CLPARAM;
impldcl((Namep)p);
if (e->headblock.vtype != TYCHAR)
e = putx(fixtype(e));
p->paramval = q = mkconv(p->vtype, e);
if (p->vtype == TYCHAR) {
if (q->tag == TEXPR)
p->paramval = q = fixexpr((Exprp)q);
if (q->tag == TADDR && q->addrblock.uname_tag == UNAM_CONST) {
qc.Const = q->addrblock.user.Const;
qc.tag = TCONST;
qc.vtype = q->addrblock.vtype;
qc.vleng = q->addrblock.vleng;
q = (expptr)&qc;
}
if (!ISCONST(q) || q->constblock.vtype != TYCHAR) {
errstr("invalid value for character parameter %s",
p->fvarname);
return;
}
if (!(e = p->vleng))
p->vleng = ICON(q->constblock.vleng->constblock.Const.ci
+ q->constblock.Const.ccp1.blanks);
else if (q->constblock.vleng->constblock.Const.ci
> e->constblock.Const.ci) {
q->constblock.vleng->constblock.Const.ci
= e->constblock.Const.ci;
q->constblock.Const.ccp1.blanks = 0;
}
else
q->constblock.Const.ccp1.blanks
= e->constblock.Const.ci
- q->constblock.vleng->constblock.Const.ci;
}
}
doentry(struct Entrypoint *ep)
#endif
{
register int type;
register Namep np;
chainp p, p1;
register Namep q;
Addrp rs;
int it, k;
extern char dflttype[26];
Extsym *entryname = ep->entryname;
if (++nentry > 1)
p1_label((long)(extsymtab - entryname - 1));
/* The main program isn't allowed to have parameters, so any given
parameters are ignored */
if(procclass == CLMAIN && !ep->arglist || procclass == CLBLOCK)
return;
/* Entry points in MAIN are an error, but we process them here */
/* to prevent faults elsewhere. */
/* So now we're working with something other than CLMAIN or CLBLOCK.
Determine the type of its return value. */
impldcl( np = mkname(entryname->fextname) );
type = np->vtype;
proc_argchanges = prev_proc && type != entryname->extype;
entryname->extseen = 1;
if(proctype == TYUNKNOWN)
if( (proctype = type) == TYCHAR)
procleng = np->vleng ? np->vleng->constblock.Const.ci
: (ftnint) (-1);
if(proctype == TYCHAR)
{
if(type != TYCHAR)
err("noncharacter entry of character function");
/* Functions returning type char can only have multiple entries if all
entries return the same length */
else if( (np->vleng ? np->vleng->constblock.Const.ci :
(ftnint) (-1)) != procleng)
err("mismatched character entry lengths");
}
else if(type == TYCHAR)
err("character entry of noncharacter function");
else if(type != proctype)
multitype = YES;
if(rtvlabel[type] == 0)
rtvlabel[type] = (int)newlabel();
ep->typelabel = rtvlabel[type];
if(type == TYCHAR)
{
if(chslot < 0)
{
chslot = nextarg(TYADDR);
chlgslot = nextarg(TYLENG);
}
np->vstg = STGARG;
/* Put a new argument in the function, one which will hold the result of
a character function. This will have to be named sometime, probably in
mkarg(). */
if(procleng < 0) {
np->vleng = (expptr) mkarg(TYLENG, chlgslot);
np->vleng->addrblock.uname_tag = UNAM_IDENT;
strcpy (np -> vleng -> addrblock.user.ident,
new_func_length());
}
if (!xretslot[TYCHAR]) {
xretslot[TYCHAR] = rs =
autovar(0, type, ISCONST(np->vleng)
? np->vleng : ICON(0), "");
strcpy(rs->user.ident, "ret_val");
}
}
/* Handle a complex return type -- declare a new parameter (pointer to
a complex value) */
else if( ISCOMPLEX(type) ) {
if (!xretslot[type])
xretslot[type] =
autovar(0, type, EXNULL, " ret_val");
/* the blank is for use in out_addr */
np->vstg = STGARG;
if(cxslot < 0)
cxslot = nextarg(TYADDR);
}
else if (type != TYSUBR) {
if (type == TYUNKNOWN) {
dclerr("untyped function", np);
proctype = type = np->vtype =
dflttype[letter(np->fvarname[0])];
}
if (!xretslot[type])
xretslot[type] = retslot =
autovar(1, type, EXNULL, " ret_val");
/* the blank is for use in out_addr */
np->vstg = STGAUTO;
}
for(p = ep->arglist ; p ; p = p->nextp)
if(! (( q = (Namep) (p->datap) )->vknownarg) ) {
q->vknownarg = 1;
q->vardesc.varno = nextarg(TYADDR);
allargs = mkchain((char *)q, allargs);
q->argno = nallargs++;
}
else if (nentry == 1)
duparg(q);
else for(p1 = ep->arglist ; p1 != p; p1 = p1->nextp)
if ((Namep)p1->datap == q)
duparg(q);
k = 0;
for(p = ep->arglist ; p ; p = p->nextp) {
if(! (( q = (Namep) (p->datap) )->vdcldone) )
{
impldcl(q);
q->vdcldone = YES;
if(q->vtype == TYCHAR)
{
/* If we don't know the length of a char*(*) (i.e. a string), we must add
in this additional length argument. */
++nallchargs;
if (q->vclass == CLPROC)
nallchargs--;
else if (q->vleng == NULL) {
/* character*(*) */
q->vleng = (expptr)
mkarg(TYLENG, nextarg(TYLENG) );
unamstring((Addrp)q->vleng,
new_arg_length(q));
}
}
}
if (q->vdimfinish)
dim_finish(q);
if (q->vtype == TYCHAR && q->vclass != CLPROC)
k++;
}
if (entryname->extype != type)
changedtype(np);
/* save information for checking consistency of arg lists */
it = infertypes;
if (entryname->exproto)
infertypes = 1;
save_argtypes(ep->arglist, &entryname->arginfo, &np->arginfo,
0, np->fvarname, STGEXT, k, np->vtype, 2);
infertypes = it;
}
