usr/src/cmd/f77/init.c

#include "defs"


FILEP infile    = { stdin };
FILEP diagfile  = { stderr };

FILEP textfile;
FILEP asmfile;
FILEP initfile;
long int headoffset;

char token[200];
int toklen;
int lineno;
char *infname;
int needkwd;
struct labelblock *thislabel    = NULL;
flag nowarnflag = NO;
flag ftn66flag  = NO;
flag profileflag        = NO;
flag optimflag  = NO;
flag shiftcase  = YES;
flag undeftype  = NO;
flag shortsubs  = YES;
flag onetripflag        = NO;
flag checksubs  = NO;
flag debugflag  = NO;
int nerr;
int nwarn;
int ndata;

flag saveall;
flag substars;
int parstate    = OUTSIDE;
flag headerdone = NO;
int blklevel;
int impltype[26];
int implleng[26];
int implstg[26];

int tyint       = TYLONG ;
int tylogical   = TYLONG;
ftnint typesize[NTYPES]
        = { 1, SZADDR, SZSHORT, SZLONG, SZLONG, 2*SZLONG,
            2*SZLONG, 4*SZLONG, SZLONG, 1, 1, 1};
int typealign[NTYPES]
        = { 1, ALIADDR, ALISHORT, ALILONG, ALILONG, ALIDOUBLE,
            ALILONG, ALIDOUBLE, ALILONG, 1, 1, 1};
int procno;
int proctype    = TYUNKNOWN;
char *procname;
int rtvlabel[NTYPES];
int fudgelabel;
struct addrblock *typeaddr;
struct addrblock *retslot;
int cxslot      = -1;
int chslot      = -1;
int chlgslot    = -1;
int procclass   = CLUNKNOWN;
int nentry;
flag multitype;
ftnint procleng;
int lastlabno   = 10;
int lastvarno;
int lastargslot;
int argloc;
ftnint autoleng;
ftnint bssleng  = 0;
int retlabel;
int ret0label;
struct ctlframe ctls[MAXCTL];
struct ctlframe *ctlstack       = ctls-1;
struct ctlframe *lastctl        = ctls+MAXCTL ;

struct nameblock *regnamep[MAXREGVAR];
int highregvar;
int nregvar;

struct extsym extsymtab[MAXEXT];
struct extsym *nextext  = extsymtab;
struct extsym *lastext  = extsymtab+MAXEXT;

struct equivblock eqvclass[MAXEQUIV];
struct hashentry hashtab[MAXHASH];
struct hashentry *lasthash      = hashtab+MAXHASH;

struct labelblock labeltab[MAXSTNO];
struct labelblock *labtabend    = labeltab+MAXSTNO;
struct labelblock *highlabtab = labeltab;
struct rplblock *rpllist        = NULL;
chainp curdtp   = NULL;
flag toomanyinit;
ftnint curdtelt;
chainp templist = NULL;
chainp holdtemps        = NULL;
int dorange     = 0;
struct entrypoint *entries      = NULL;

chainp chains   = NULL;

flag inioctl;
struct addrblock *ioblkp;
int iostmt;
int nioctl;
int nequiv      = 0;
int nintnames   = 0;
int nextnames   = 0;

struct literal litpool[MAXLITERALS];
int nliterals;


fileinit()
{
procno = 0;
lastlabno = 10;
lastvarno = 0;
nextext = extsymtab;
nliterals = 0;
nerr = 0;
ndata = 0;
}


procinit()
{
register struct nameblock *p;
register struct dimblock *q;
register struct hashentry *hp;
register struct labelblock *lp;
chainp cp;
int i;

pruse(asmfile, USECONST);
#if FAMILY == SCJ
        p2pass(USETEXT);
#endif
parstate = OUTSIDE;
headerdone = NO;
blklevel = 1;
saveall = NO;
substars = NO;
nwarn = 0;
thislabel = NULL;
needkwd = 0;

++procno;
proctype = TYUNKNOWN;
procname = "MAIN_    ";
procclass = CLUNKNOWN;
nentry = 0;
multitype = NO;
typeaddr = NULL;
retslot = NULL;
cxslot = -1;
chslot = -1;
chlgslot = -1;
procleng = 0;
blklevel = 1;
lastargslot = 0;
#if TARGET==PDP11
        autoleng = 6;
#else
        autoleng = 0;
#endif

for(lp = labeltab ; lp < labtabend ; ++lp)
        lp->stateno = 0;

for(hp = hashtab ; hp < lasthash ; ++hp)
        if(p = hp->varp)
                {
                frexpr(p->vleng);
                if(q = p->vdim)
                        {
                        for(i = 0 ; i < q->ndim ; ++i)
                                {
                                frexpr(q->dims[i].dimsize);
                                frexpr(q->dims[i].dimexpr);
                                }
                        frexpr(q->nelt);
                        frexpr(q->baseoffset);
                        frexpr(q->basexpr);
                        free(q);
                        }
                free(p);
                hp->varp = NULL;
                }
nintnames = 0;
highlabtab = labeltab;

ctlstack = ctls - 1;
for(cp = templist ; cp ; cp = cp->nextp)
        free(cp->datap);
frchain(&templist);
holdtemps = NULL;
dorange = 0;
nregvar = 0;
highregvar = 0;
entries = NULL;
rpllist = NULL;
inioctl = NO;
ioblkp = NULL;
nequiv = 0;

for(i = 0 ; i<NTYPES ; ++i)
        rtvlabel[i] = 0;
fudgelabel = 0;

if(undeftype)
        setimpl(TYUNKNOWN, (ftnint) 0, 'a', 'z');
else
        {
        setimpl(TYREAL, (ftnint) 0, 'a', 'z');
        setimpl(tyint,  (ftnint) 0, 'i', 'n');
        }
setimpl(-STGBSS, (ftnint) 0, 'a', 'z'); /* set class */
setlog();
}


setimpl(type, length, c1, c2)
int type;
ftnint length;
int c1, c2;
{
int i;
char buff[100];

if(c1==0 || c2==0)
        return;

if(c1 > c2)
        err( sprintf(buff, "characters out of order in implicit:%c-%c", c1, c2) );
else
        if(type < 0)
                for(i = c1 ; i<=c2 ; ++i)
                        implstg[i-'a'] = - type;
        else
                {
                type = lengtype(type, (int) length);
                if(type != TYCHAR)
                        length = 0;
                for(i = c1 ; i<=c2 ; ++i)
                        {
                        impltype[i-'a'] = type;
                        implleng[i-'a'] = length;
                        }
                }
}