1562 lines
		
	
	
	
		
			33 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			1562 lines
		
	
	
	
		
			33 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /****************************************************************
 | |
| Copyright 1990 by AT&T Bell Laboratories and Bellcore.
 | |
| 
 | |
| Permission to use, copy, modify, and distribute this software
 | |
| and its documentation for any purpose and without fee is hereby
 | |
| granted, provided that the above copyright notice appear in all
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| copies and that both that the copyright notice and this
 | |
| permission notice and warranty disclaimer appear in supporting
 | |
| documentation, and that the names of AT&T Bell Laboratories or
 | |
| Bellcore or any of their entities not be used in advertising or
 | |
| publicity pertaining to distribution of the software without
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| specific, written prior permission.
 | |
| 
 | |
| AT&T and Bellcore disclaim all warranties with regard to this
 | |
| software, including all implied warranties of merchantability
 | |
| and fitness.  In no event shall AT&T or Bellcore be liable for
 | |
| any special, indirect or consequential damages or any damages
 | |
| whatsoever resulting from loss of use, data or profits, whether
 | |
| in an action of contract, negligence or other tortious action,
 | |
| arising out of or in connection with the use or performance of
 | |
| this software.
 | |
| ****************************************************************/
 | |
| 
 | |
| #include "defs.h"
 | |
| #include "names.h"
 | |
| #include "output.h"
 | |
| #include "p1defs.h"
 | |
| 
 | |
| #define EXNULL (union Expression *)0
 | |
| 
 | |
| LOCAL dobss(), docomleng(), docommon(), doentry(),
 | |
| 	epicode(), nextarg(), retval();
 | |
| 
 | |
| static char Blank[] = BLANKCOMMON;
 | |
| 
 | |
|  static char *postfix[] = { "h", "i", "r", "d", "c", "z", "i" };
 | |
| 
 | |
|  chainp new_procs;
 | |
|  int prev_proc, proc_argchanges, proc_protochanges;
 | |
| 
 | |
|  void
 | |
| changedtype(q)
 | |
|  Namep q;
 | |
| {
 | |
| 	char buf[200];
 | |
| 	int qtype, type1;
 | |
| 	register Extsym *e;
 | |
| 	Argtypes *at;
 | |
| 
 | |
| 	if (q->vtypewarned)
 | |
| 		return;
 | |
| 	q->vtypewarned = 1;
 | |
| 	qtype = q->vtype;
 | |
| 	e = &extsymtab[q->vardesc.varno];
 | |
| 	if (!(at = e->arginfo)) {
 | |
| 		if (!e->exused)
 | |
| 			return;
 | |
| 		}
 | |
| 	else if (at->changes & 2 && qtype != TYUNKNOWN)
 | |
| 		proc_protochanges++;
 | |
| 	type1 = e->extype;
 | |
| 	if (type1 == TYUNKNOWN)
 | |
| 		return;
 | |
| 	if (qtype == TYUNKNOWN)
 | |
| 		/* e.g.,
 | |
| 			subroutine foo
 | |
| 			end
 | |
| 			external foo
 | |
| 			call goo(foo)
 | |
| 			end
 | |
| 		*/
 | |
| 		return;
 | |
| 	sprintf(buf, "%.90s: inconsistent declarations:\n\
 | |
| 	here %s%s, previously %s%s.", q->fvarname, ftn_types[qtype],
 | |
| 		qtype == TYSUBR ? "" : " function",
 | |
| 		ftn_types[type1], type1 == TYSUBR ? "" : " function");
 | |
| 	warn(buf);
 | |
| 	}
 | |
| 
 | |
|  void
 | |
| unamstring(q, s)
 | |
|  register Addrp q;
 | |
|  register char *s;
 | |
| {
 | |
| 	register int k;
 | |
| 	register char *t;
 | |
| 
 | |
| 	k = strlen(s);
 | |
| 	if (k < IDENT_LEN) {
 | |
| 		q->uname_tag = UNAM_IDENT;
 | |
| 		t = q->user.ident;
 | |
| 		}
 | |
| 	else {
 | |
| 		q->uname_tag = UNAM_CHARP;
 | |
| 		q->user.Charp = t = mem(k+1, 0);
 | |
| 		}
 | |
| 	strcpy(t, s);
 | |
| 	}
 | |
| 
 | |
|  static void
 | |
| fix_entry_returns()	/* for multiple entry points */
 | |
| {
 | |
| 	Addrp a;
 | |
| 	int i;
 | |
| 	struct Entrypoint *e;
 | |
| 	Namep np;
 | |
| 
 | |
| 	e = entries = (struct Entrypoint *)revchain((chainp)entries);
 | |
| 	allargs = revchain(allargs);
 | |
| 	if (!multitype)
 | |
| 		return;
 | |
| 
 | |
| 	/* TYLOGICAL should have been turned into TYLONG or TYSHORT by now */
 | |
| 
 | |
| 	for(i = TYSHORT; i <= TYLOGICAL; i++)
 | |
| 		if (a = xretslot[i])
 | |
| 			sprintf(a->user.ident, "(*ret_val).%s",
 | |
| 				postfix[i-TYSHORT]);
 | |
| 
 | |
| 	do {
 | |
| 		np = e->enamep;
 | |
| 		switch(np->vtype) {
 | |
| 			case TYSHORT:
 | |
| 			case TYLONG:
 | |
| 			case TYREAL:
 | |
| 			case TYDREAL:
 | |
| 			case TYCOMPLEX:
 | |
| 			case TYDCOMPLEX:
 | |
| 			case TYLOGICAL:
 | |
| 				np->vstg = STGARG;
 | |
| 			}
 | |
| 		}
 | |
| 		while(e = e->entnextp);
 | |
| 	}
 | |
| 
 | |
|  static void
 | |
| putentries(outfile)	/* put out wrappers for multiple entries */
 | |
|  FILE *outfile;
 | |
| {
 | |
| 	char base[IDENT_LEN];
 | |
| 	struct Entrypoint *e;
 | |
| 	Namep *A, *Ae, *Ae1, **Alp, *a, **a1, np;
 | |
| 	chainp args, lengths, length_comp();
 | |
| 	void listargs(), list_arg_types();
 | |
| 	int i, k, mt, nL, type;
 | |
| 	extern char *dfltarg[], **dfltproc;
 | |
| 
 | |
| 	nL = (nallargs + nallchargs) * sizeof(Namep *);
 | |
| 	A = (Namep *)ckalloc(nL + nallargs*sizeof(Namep **));
 | |
| 	Ae = A + nallargs;
 | |
| 	Alp = (Namep **)(Ae1 = Ae + nallchargs);
 | |
| 	i = k = 0;
 | |
| 	for(a1 = Alp, args = allargs; args; a1++, args = args->nextp) {
 | |
| 		np = (Namep)args->datap;
 | |
| 		if (np->vtype == TYCHAR && np->vclass != CLPROC)
 | |
| 			*a1 = &Ae[i++];
 | |
| 		}
 | |
| 
 | |
| 	e = entries;
 | |
| 	mt = multitype;
 | |
| 	multitype = 0;
 | |
| 	sprintf(base, "%s0_", e->enamep->cvarname);
 | |
| 	do {
 | |
| 		np = e->enamep;
 | |
| 		lengths = length_comp(e, 0);
 | |
| 		proctype = type = np->vtype;
 | |
| 		if (protofile)
 | |
| 			protowrite(protofile, type, np->cvarname, e, lengths);
 | |
| 		nice_printf(outfile, "\n%s ", c_type_decl(type, 1));
 | |
| 		nice_printf(outfile, "%s", np->cvarname);
 | |
| 		if (!Ansi) {
 | |
| 			listargs(outfile, e, 0, lengths);
 | |
| 			nice_printf(outfile, "\n");
 | |
| 			}
 | |
| 	    	list_arg_types(outfile, e, lengths, 0, "\n");
 | |
| 		nice_printf(outfile, "{\n");
 | |
| 		frchain(&lengths);
 | |
| 		next_tab(outfile);
 | |
| 		if (mt)
 | |
| 			nice_printf(outfile,
 | |
| 				"Multitype ret_val;\n%s(%d, &ret_val",
 | |
| 				base, k); /*)*/
 | |
| 		else if (ISCOMPLEX(type))
 | |
| 			nice_printf(outfile, "%s(%d,%s", base, k,
 | |
| 				xretslot[type]->user.ident); /*)*/
 | |
| 		else if (type == TYCHAR)
 | |
| 			nice_printf(outfile,
 | |
| 				"%s(%d, ret_val, ret_val_len", base, k); /*)*/
 | |
| 		else
 | |
| 			nice_printf(outfile, "return %s(%d", base, k); /*)*/
 | |
| 		k++;
 | |
| 		memset((char *)A, 0, nL);
 | |
| 		for(args = e->arglist; args; args = args->nextp) {
 | |
| 			np = (Namep)args->datap;
 | |
| 			A[np->argno] = np;
 | |
| 			if (np->vtype == TYCHAR && np->vclass != CLPROC)
 | |
| 				*Alp[np->argno] = np;
 | |
| 			}
 | |
| 		args = allargs;
 | |
| 		for(a = A; a < Ae; a++, args = args->nextp)
 | |
| 			nice_printf(outfile, ", %s", (np = *a)
 | |
| 				? np->cvarname
 | |
| 				: ((Namep)args->datap)->vclass == CLPROC
 | |
| 				? dfltproc[((Namep)args->datap)->vtype]
 | |
| 				: dfltarg[((Namep)args->datap)->vtype]);
 | |
| 		for(; a < Ae1; a++)
 | |
| 			if (np = *a)
 | |
| 				nice_printf(outfile, ", %s_len", np->fvarname);
 | |
| 			else
 | |
| 				nice_printf(outfile, ", (ftnint)0");
 | |
| 		nice_printf(outfile, /*(*/ ");\n");
 | |
| 		if (mt) {
 | |
| 			if (type == TYCOMPLEX)
 | |
| 				nice_printf(outfile,
 | |
| 		    "r_v->r = ret_val.c.r; r_v->i = ret_val.c.i;\nreturn 0;\n");
 | |
| 			else if (type == TYDCOMPLEX)
 | |
| 				nice_printf(outfile,
 | |
| 		    "r_v->r = ret_val.z.r; r_v->i = ret_val.z.i;\nreturn 0;\n");
 | |
| 			else nice_printf(outfile, "return ret_val.%s;\n",
 | |
| 				postfix[type-TYSHORT]);
 | |
| 			}
 | |
| 		else if (ONEOF(type, M(TYCHAR)|M(TYCOMPLEX)|M(TYDCOMPLEX)))
 | |
| 			nice_printf(outfile, "return 0;\n");
 | |
| 		nice_printf(outfile, "}\n");
 | |
| 		prev_tab(outfile);
 | |
| 		}
 | |
| 		while(e = e->entnextp);
 | |
| 	free((char *)A);
 | |
| 	}
 | |
| 
 | |
|  static void
 | |
| entry_goto(outfile)
 | |
|  FILEP outfile;
 | |
| {
 | |
| 	struct Entrypoint *e = entries;
 | |
| 	int k = 0;
 | |
| 
 | |
| 	nice_printf(outfile, "switch(n__) {\n");
 | |
| 	next_tab(outfile);
 | |
| 	while(e = e->entnextp)
 | |
| 		nice_printf(outfile, "case %d: goto %s;\n", ++k,
 | |
| 			user_label((long)(extsymtab - e->entryname - 1)));
 | |
| 	nice_printf(outfile, "}\n\n");
 | |
| 	prev_tab(outfile);
 | |
| 	}
 | |
| 
 | |
| /* start a new procedure */
 | |
| 
 | |
| newproc()
 | |
| {
 | |
| 	if(parstate != OUTSIDE)
 | |
| 	{
 | |
| 		execerr("missing end statement", CNULL);
 | |
| 		endproc();
 | |
| 	}
 | |
| 
 | |
| 	parstate = INSIDE;
 | |
| 	procclass = CLMAIN;	/* default */
 | |
| }
 | |
| 
 | |
|  static void
 | |
| zap_changes()
 | |
| {
 | |
| 	register chainp cp;
 | |
| 	register Argtypes *at;
 | |
| 
 | |
| 	/* arrange to get correct count of prototypes that would
 | |
| 	   change by running f2c again */
 | |
| 
 | |
| 	if (prev_proc && proc_argchanges)
 | |
| 		proc_protochanges++;
 | |
| 	prev_proc = proc_argchanges = 0;
 | |
| 	for(cp = new_procs; cp; cp = cp->nextp)
 | |
| 		if (at = ((Namep)cp->datap)->arginfo)
 | |
| 			at->changes &= ~1;
 | |
| 	frchain(&new_procs);
 | |
| 	}
 | |
| 
 | |
| /* end of procedure. generate variables, epilogs, and prologs */
 | |
| 
 | |
| endproc()
 | |
| {
 | |
| 	struct Labelblock *lp;
 | |
| 	Extsym *ext;
 | |
| 
 | |
| 	if(parstate < INDATA)
 | |
| 		enddcl();
 | |
| 	if(ctlstack >= ctls)
 | |
| 		err("DO loop or BLOCK IF not closed");
 | |
| 	for(lp = labeltab ; lp < labtabend ; ++lp)
 | |
| 		if(lp->stateno!=0 && lp->labdefined==NO)
 | |
| 			errstr("missing statement label %s",
 | |
| 				convic(lp->stateno) );
 | |
| 
 | |
| /* Save copies of the common variables in extptr -> allextp */
 | |
| 
 | |
| 	for (ext = extsymtab; ext < nextext; ext++)
 | |
| 		if (ext -> extstg == STGCOMMON && ext -> extp) {
 | |
| 			extern int usedefsforcommon;
 | |
| 
 | |
| /* Write out the abbreviations for common block reference */
 | |
| 
 | |
| 			copy_data (ext -> extp);
 | |
| 			if (usedefsforcommon) {
 | |
| 				wr_abbrevs (c_file, 1, ext -> extp);
 | |
| 				ext -> used_here = 1;
 | |
| 				}
 | |
| 			else
 | |
| 				ext -> extp = CHNULL;
 | |
| 
 | |
| 			}
 | |
| 
 | |
| 	if (nentry > 1)
 | |
| 		fix_entry_returns();
 | |
| 	epicode();
 | |
| 	donmlist();
 | |
| 	dobss();
 | |
| 	start_formatting ();
 | |
| 	if (nentry > 1)
 | |
| 		putentries(c_file);
 | |
| 
 | |
| 	zap_changes();
 | |
| 	procinit();	/* clean up for next procedure */
 | |
| }
 | |
| 
 | |
| 
 | |
| 
 | |
| /* End of declaration section of procedure.  Allocate storage. */
 | |
| 
 | |
| enddcl()
 | |
| {
 | |
| 	register struct Entrypoint *ep;
 | |
| 	struct Entrypoint *ep0;
 | |
| 	extern void freetemps();
 | |
| 	chainp cp;
 | |
| 	extern char *err_proc;
 | |
| 	static char comblks[] = "common blocks";
 | |
| 
 | |
| 	err_proc = comblks;
 | |
| 	docommon();
 | |
| 
 | |
| /* Now the hash table entries for fields of common blocks have STGCOMMON,
 | |
|    vdcldone, voffset, and varno.  And the common blocks themselves have
 | |
|    their full sizes in extleng. */
 | |
| 
 | |
| 	err_proc = "equivalences";
 | |
| 	doequiv();
 | |
| 
 | |
| 	err_proc = comblks;
 | |
| 	docomleng();
 | |
| 
 | |
| /* This implies that entry points in the declarations are buffered in
 | |
|    entries   but not written out */
 | |
| 
 | |
| 	err_proc = "entries";
 | |
| 	if (ep = ep0 = (struct Entrypoint *)revchain((chainp)entries)) {
 | |
| 		/* entries could be 0 in case of an error */
 | |
| 		do doentry(ep);
 | |
| 			while(ep = ep->entnextp);
 | |
| 		entries = (struct Entrypoint *)revchain((chainp)ep0);
 | |
| 		}
 | |
| 
 | |
| 	err_proc = 0;
 | |
| 	parstate = INEXEC;
 | |
| 	p1put(P1_PROCODE);
 | |
| 	freetemps();
 | |
| 	if (earlylabs) {
 | |
| 		for(cp = earlylabs = revchain(earlylabs); cp; cp = cp->nextp)
 | |
| 			p1_label((long)cp->datap);
 | |
| 		frchain(&earlylabs);
 | |
| 		}
 | |
| }
 | |
| 
 | |
| /* ROUTINES CALLED WHEN ENCOUNTERING ENTRY POINTS */
 | |
| 
 | |
| /* Main program or Block data */
 | |
| 
 | |
| startproc(progname, class)
 | |
| Extsym * progname;
 | |
| int class;
 | |
| {
 | |
| 	register struct Entrypoint *p;
 | |
| 
 | |
| 	p = ALLOC(Entrypoint);
 | |
| 	if(class == CLMAIN) {
 | |
| 		puthead(CNULL, CLMAIN);
 | |
| 		if (progname)
 | |
| 		    strcpy (main_alias, progname->cextname);
 | |
| 	} else
 | |
| 		puthead(CNULL, CLBLOCK);
 | |
| 	if(class == CLMAIN)
 | |
| 		newentry( mkname(" MAIN"), 0 )->extinit = 1;
 | |
| 	p->entryname = progname;
 | |
| 	entries = p;
 | |
| 
 | |
| 	procclass = class;
 | |
| 	fprintf(diagfile, "   %s", (class==CLMAIN ? "MAIN" : "BLOCK DATA") );
 | |
| 	if(progname) {
 | |
| 		fprintf(diagfile, " %s", progname->fextname);
 | |
| 		procname = progname->cextname;
 | |
| 		}
 | |
| 	fprintf(diagfile, ":\n");
 | |
| 	fflush(diagfile);
 | |
| }
 | |
| 
 | |
| /* subroutine or function statement */
 | |
| 
 | |
| Extsym *newentry(v, substmsg)
 | |
|  register Namep v;
 | |
|  int substmsg;
 | |
| {
 | |
| 	register Extsym *p;
 | |
| 	char buf[128], badname[64];
 | |
| 	static int nbad = 0;
 | |
| 	static char already[] = "external name already used";
 | |
| 
 | |
| 	p = mkext(v->fvarname, addunder(v->cvarname));
 | |
| 
 | |
| 	if(p->extinit || ! ONEOF(p->extstg, M(STGUNKNOWN)|M(STGEXT)) )
 | |
| 	{
 | |
| 		sprintf(badname, "%s_bad%d", v->fvarname, ++nbad);
 | |
| 		if (substmsg) {
 | |
| 			sprintf(buf,"%s\n\tsubstituting \"%s\"",
 | |
| 				already, badname);
 | |
| 			dclerr(buf, v);
 | |
| 			}
 | |
| 		else
 | |
| 			dclerr(already, v);
 | |
| 		p = mkext(v->fvarname, badname);
 | |
| 	}
 | |
| 	v->vstg = STGAUTO;
 | |
| 	v->vprocclass = PTHISPROC;
 | |
| 	v->vclass = CLPROC;
 | |
| 	if (p->extstg == STGEXT)
 | |
| 		prev_proc = 1;
 | |
| 	else
 | |
| 		p->extstg = STGEXT;
 | |
| 	p->extinit = YES;
 | |
| 	v->vardesc.varno = p - extsymtab;
 | |
| 	return(p);
 | |
| }
 | |
| 
 | |
| 
 | |
| entrypt(class, type, length, entry, args)
 | |
| int class, type;
 | |
| ftnint length;
 | |
| Extsym *entry;
 | |
| chainp args;
 | |
| {
 | |
| 	register Namep q;
 | |
| 	register struct Entrypoint *p;
 | |
| 	extern int types3[];
 | |
| 
 | |
| 	if(class != CLENTRY)
 | |
| 		puthead( procname = entry->cextname, class);
 | |
| 	else
 | |
| 		fprintf(diagfile, "       entry ");
 | |
| 	fprintf(diagfile, "   %s:\n", entry->fextname);
 | |
| 	fflush(diagfile);
 | |
| 	q = mkname(entry->fextname);
 | |
| 	if (type == TYSUBR)
 | |
| 		q->vstg = STGEXT;
 | |
| 
 | |
| 	type = lengtype(type, length);
 | |
| 	if(class == CLPROC)
 | |
| 	{
 | |
| 		procclass = CLPROC;
 | |
| 		proctype = type;
 | |
| 		procleng = type == TYCHAR ? length : 0;
 | |
| 	}
 | |
| 
 | |
| 	p = ALLOC(Entrypoint);
 | |
| 
 | |
| 	p->entnextp = entries;
 | |
| 	entries = p;
 | |
| 
 | |
| 	p->entryname = entry;
 | |
| 	p->arglist = revchain(args);
 | |
| 	p->enamep = q;
 | |
| 
 | |
| 	if(class == CLENTRY)
 | |
| 	{
 | |
| 		class = CLPROC;
 | |
| 		if(proctype == TYSUBR)
 | |
| 			type = TYSUBR;
 | |
| 	}
 | |
| 
 | |
| 	q->vclass = class;
 | |
| 	q->vprocclass = 0;
 | |
| 	settype(q, type, length);
 | |
| 	q->vprocclass = PTHISPROC;
 | |
| 	/* hold all initial entry points till end of declarations */
 | |
| 	if(parstate >= INDATA)
 | |
| 		doentry(p);
 | |
| }
 | |
| 
 | |
| /* generate epilogs */
 | |
| 
 | |
| /* epicode -- write out the proper function return mechanism at the end of
 | |
|    the procedure declaration.  Handles multiple return value types, as
 | |
|    well as cooercion into the proper value */
 | |
| 
 | |
| LOCAL epicode()
 | |
| {
 | |
| 	extern int lastwasbranch;
 | |
| 
 | |
| 	if(procclass==CLPROC)
 | |
| 	{
 | |
| 		if(proctype==TYSUBR)
 | |
| 		{
 | |
| 
 | |
| /* Return a zero only when the alternate return mechanism has been
 | |
|    specified in the function header */
 | |
| 
 | |
| 			if (substars && lastwasbranch == NO)
 | |
| 			    p1_subr_ret (ICON(0));
 | |
| 		}
 | |
| 		else if (!multitype && lastwasbranch == NO)
 | |
| 			retval(proctype);
 | |
| 	}
 | |
| 	lastwasbranch = NO;
 | |
| }
 | |
| 
 | |
| 
 | |
| /* generate code to return value of type  t */
 | |
| 
 | |
| LOCAL retval(t)
 | |
| register int t;
 | |
| {
 | |
| 	register Addrp p;
 | |
| 
 | |
| 	switch(t)
 | |
| 	{
 | |
| 	case TYCHAR:
 | |
| 	case TYCOMPLEX:
 | |
| 	case TYDCOMPLEX:
 | |
| 		break;
 | |
| 
 | |
| 	case TYLOGICAL:
 | |
| 		t = tylogical;
 | |
| 	case TYADDR:
 | |
| 	case TYSHORT:
 | |
| 	case TYLONG:
 | |
| 	case TYREAL:
 | |
| 	case TYDREAL:
 | |
| 		p = (Addrp) cpexpr((expptr)retslot);
 | |
| 		p->vtype = t;
 | |
| 		p1_subr_ret (mkconv (t, fixtype((expptr)p)));
 | |
| 		break;
 | |
| 
 | |
| 	default:
 | |
| 		badtype("retval", t);
 | |
| 	}
 | |
| }
 | |
| 
 | |
| 
 | |
| /* Do parameter adjustments */
 | |
| 
 | |
| procode(outfile)
 | |
| FILE *outfile;
 | |
| {
 | |
| 	prolog(outfile, allargs);
 | |
| 
 | |
| 	if (nentry > 1)
 | |
| 		entry_goto(outfile);
 | |
| 	}
 | |
| 
 | |
| /* Finish bound computations now that all variables are declared.
 | |
|  * This used to be in setbound(), but under -u the following incurred
 | |
|  * an erroneous error message:
 | |
|  *	subroutine foo(x,n)
 | |
|  *	real x(n)
 | |
|  *	integer n
 | |
|  */
 | |
| 
 | |
|  static void
 | |
| dim_finish(v)
 | |
|  Namep v;
 | |
| {
 | |
| 	register struct Dimblock *p;
 | |
| 	register expptr q;
 | |
| 	register int i, nd;
 | |
| 	extern expptr make_int_expr();
 | |
| 
 | |
| 	p = v->vdim;
 | |
| 	v->vdimfinish = 0;
 | |
| 	nd = p->ndim;
 | |
| 	doin_setbound = 1;
 | |
| 	for(i = 0; i < nd; i++)
 | |
| 		if (q = p->dims[i].dimexpr)
 | |
| 			p->dims[i].dimexpr = make_int_expr(putx(fixtype(q)));
 | |
| 	if (q = p->basexpr)
 | |
| 		p->basexpr = make_int_expr(putx(fixtype(q)));
 | |
| 	doin_setbound = 0;
 | |
| 	}
 | |
| 
 | |
|  static void
 | |
| duparg(q)
 | |
|  Namep q;
 | |
| { errstr("duplicate argument %.80s", q->fvarname); }
 | |
| 
 | |
| /*
 | |
|    manipulate argument lists (allocate argument slot positions)
 | |
|  * keep track of return types and labels
 | |
|  */
 | |
| 
 | |
| LOCAL doentry(ep)
 | |
| struct Entrypoint *ep;
 | |
| {
 | |
| 	register int type;
 | |
| 	register Namep np;
 | |
| 	chainp p, p1;
 | |
| 	register Namep q;
 | |
| 	Addrp mkarg(), 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 || procclass == CLBLOCK)
 | |
| 		return;
 | |
| 
 | |
| /* 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] = 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, 0);
 | |
| 	infertypes = it;
 | |
| }
 | |
| 
 | |
| 
 | |
| 
 | |
| LOCAL nextarg(type)
 | |
| int type;
 | |
| {
 | |
| 	int k;
 | |
| 	k = lastargslot;
 | |
| 	lastargslot += typesize[type];
 | |
| 	return(k);
 | |
| }
 | |
| 
 | |
|  LOCAL
 | |
| dim_check(q)
 | |
|  Namep q;
 | |
| {
 | |
| 	register struct Dimblock *vdim = q->vdim;
 | |
| 
 | |
| 	if(!vdim->nelt || !ISICON(vdim->nelt))
 | |
| 		dclerr("adjustable dimension on non-argument", q);
 | |
| 	else if (vdim->nelt->constblock.Const.ci <= 0)
 | |
| 		dclerr("nonpositive dimension", q);
 | |
| 	}
 | |
| 
 | |
| LOCAL dobss()
 | |
| {
 | |
| 	register struct Hashentry *p;
 | |
| 	register Namep q;
 | |
| 	int qstg, qclass, qtype;
 | |
| 	Extsym *e;
 | |
| 
 | |
| 	for(p = hashtab ; p<lasthash ; ++p)
 | |
| 		if(q = p->varp)
 | |
| 		{
 | |
| 			qstg = q->vstg;
 | |
| 			qtype = q->vtype;
 | |
| 			qclass = q->vclass;
 | |
| 
 | |
| 			if( (qclass==CLUNKNOWN && qstg!=STGARG) ||
 | |
| 			    (qclass==CLVAR && qstg==STGUNKNOWN) ) {
 | |
| 				if (!(q->vis_assigned | q->vimpldovar))
 | |
| 					warn1("local variable %s never used",
 | |
| 						q->fvarname);
 | |
| 				}
 | |
| 			else if(qclass==CLVAR && qstg==STGBSS)
 | |
| 			{ ; }
 | |
| 
 | |
| /* Give external procedures the proper storage class */
 | |
| 
 | |
| 			else if(qclass==CLPROC && q->vprocclass==PEXTERNAL
 | |
| 					&& qstg!=STGARG) {
 | |
| 				e = mkext(q->fvarname,addunder(q->cvarname));
 | |
| 				e->extstg = STGEXT;
 | |
| 				q->vardesc.varno = e - extsymtab;
 | |
| 				if (e->extype != qtype)
 | |
| 					changedtype(q);
 | |
| 				}
 | |
| 			if(qclass==CLVAR) {
 | |
| 			    if (qstg != STGARG && q->vdim)
 | |
| 				dim_check(q);
 | |
| 			} /* if qclass == CLVAR */
 | |
| 		}
 | |
| 
 | |
| }
 | |
| 
 | |
| 
 | |
| 
 | |
| donmlist()
 | |
| {
 | |
| 	register struct Hashentry *p;
 | |
| 	register Namep q;
 | |
| 
 | |
| 	for(p=hashtab; p<lasthash; ++p)
 | |
| 		if( (q = p->varp) && q->vclass==CLNAMELIST)
 | |
| 			namelist(q);
 | |
| }
 | |
| 
 | |
| 
 | |
| /* iarrlen -- Returns the size of the array in bytes, or -1 */
 | |
| 
 | |
| ftnint iarrlen(q)
 | |
| register Namep q;
 | |
| {
 | |
| 	ftnint leng;
 | |
| 
 | |
| 	leng = typesize[q->vtype];
 | |
| 	if(leng <= 0)
 | |
| 		return(-1);
 | |
| 	if(q->vdim)
 | |
| 		if( ISICON(q->vdim->nelt) )
 | |
| 			leng *= q->vdim->nelt->constblock.Const.ci;
 | |
| 		else	return(-1);
 | |
| 	if(q->vleng)
 | |
| 		if( ISICON(q->vleng) )
 | |
| 			leng *= q->vleng->constblock.Const.ci;
 | |
| 		else return(-1);
 | |
| 	return(leng);
 | |
| }
 | |
| 
 | |
| namelist(np)
 | |
| Namep np;
 | |
| {
 | |
| 	register chainp q;
 | |
| 	register Namep v;
 | |
| 	int y;
 | |
| 
 | |
| 	if (!np->visused)
 | |
| 		return;
 | |
| 	y = 0;
 | |
| 
 | |
| 	for(q = np->varxptr.namelist ; q ; q = q->nextp)
 | |
| 	{
 | |
| 		vardcl( v = (Namep) (q->datap) );
 | |
| 		if( !ONEOF(v->vstg, MSKSTATIC) )
 | |
| 			dclerr("may not appear in namelist", v);
 | |
| 		else {
 | |
| 			v->vnamelist = 1;
 | |
| 			v->visused = 1;
 | |
| 			v->vsave = 1;
 | |
| 			y = 1;
 | |
| 			}
 | |
| 	np->visused = y;
 | |
| 	}
 | |
| }
 | |
| 
 | |
| /* docommon -- called at the end of procedure declarations, before
 | |
|    equivalences and the procedure body */
 | |
| 
 | |
| LOCAL docommon()
 | |
| {
 | |
|     register Extsym *extptr;
 | |
|     register chainp q, q1;
 | |
|     struct Dimblock *t;
 | |
|     expptr neltp;
 | |
|     register Namep comvar;
 | |
|     ftnint size;
 | |
|     int i, k, pref, type;
 | |
|     extern int type_pref[];
 | |
| 
 | |
|     for(extptr = extsymtab ; extptr<nextext ; ++extptr)
 | |
| 	if (extptr->extstg == STGCOMMON && (q = extptr->extp)) {
 | |
| 
 | |
| /* If a common declaration also had a list of variables ... */
 | |
| 
 | |
| 	    q = extptr->extp = revchain(q);
 | |
| 	    pref = 1;
 | |
| 	    for(k = TYCHAR; q ; q = q->nextp)
 | |
| 	    {
 | |
| 		comvar = (Namep) (q->datap);
 | |
| 
 | |
| 		if(comvar->vdcldone == NO)
 | |
| 		    vardcl(comvar);
 | |
| 		type = comvar->vtype;
 | |
| 		if (pref < type_pref[type])
 | |
| 			pref = type_pref[k = type];
 | |
| 		if(extptr->extleng % typealign[type] != 0) {
 | |
| 		    dclerr("common alignment", comvar);
 | |
| 		    --nerr; /* don't give bad return code for this */
 | |
| #if 0
 | |
| 		    extptr->extleng = roundup(extptr->extleng, typealign[type]);
 | |
| #endif
 | |
| 		} /* if extptr -> extleng % */
 | |
| 
 | |
| /* Set the offset into the common block */
 | |
| 
 | |
| 		comvar->voffset = extptr->extleng;
 | |
| 		comvar->vardesc.varno = extptr - extsymtab;
 | |
| 		if(type == TYCHAR)
 | |
| 		    size = comvar->vleng->constblock.Const.ci;
 | |
| 		else
 | |
| 		    size = typesize[type];
 | |
| 		if(t = comvar->vdim)
 | |
| 		    if( (neltp = t->nelt) && ISCONST(neltp) )
 | |
| 			size *= neltp->constblock.Const.ci;
 | |
| 		    else
 | |
| 			dclerr("adjustable array in common", comvar);
 | |
| 
 | |
| /* Adjust the length of the common block so far */
 | |
| 
 | |
| 		extptr->extleng += size;
 | |
| 	    } /* for */
 | |
| 
 | |
| 	    extptr->extype = k;
 | |
| 
 | |
| /* Determine curno and, if new, save this identifier chain */
 | |
| 
 | |
| 	    q1 = extptr->extp;
 | |
| 	    for (q = extptr->allextp, i = 0; q; i++, q = q->nextp)
 | |
| 		if (struct_eq((chainp)q->datap, q1))
 | |
| 			break;
 | |
| 	    if (q)
 | |
| 		extptr->curno = extptr->maxno - i;
 | |
| 	    else {
 | |
| 		extptr->curno = ++extptr->maxno;
 | |
| 		extptr->allextp = mkchain((char *)extptr->extp,
 | |
| 						extptr->allextp);
 | |
| 		}
 | |
| 	} /* if extptr -> extstg == STGCOMMON */
 | |
| 
 | |
| /* Now the hash table entries have STGCOMMON, vdcldone, voffset, and
 | |
|    varno.  And the common block itself has its full size in extleng. */
 | |
| 
 | |
| } /* docommon */
 | |
| 
 | |
| 
 | |
| /* copy_data -- copy the Namep entries so they are available even after
 | |
|    the hash table is empty */
 | |
| 
 | |
| copy_data (list)
 | |
| chainp list;
 | |
| {
 | |
|     for (; list; list = list -> nextp) {
 | |
| 	Namep namep = ALLOC (Nameblock);
 | |
| 	int size, nd, i;
 | |
| 	struct Dimblock *dp;
 | |
| 
 | |
| 	cpn(sizeof(struct Nameblock), list->datap, (char *)namep);
 | |
| 	namep->fvarname = strcpy(gmem(strlen(namep->fvarname)+1,0),
 | |
| 		namep->fvarname);
 | |
| 	namep->cvarname = strcmp(namep->fvarname, namep->cvarname)
 | |
| 		? strcpy(gmem(strlen(namep->cvarname)+1,0), namep->cvarname)
 | |
| 		: namep->fvarname;
 | |
| 	if (namep -> vleng)
 | |
| 	    namep -> vleng = (expptr) cpexpr (namep -> vleng);
 | |
| 	if (namep -> vdim) {
 | |
| 	    nd = namep -> vdim -> ndim;
 | |
| 	    size = sizeof(int) + (3 + 2 * nd) * sizeof (expptr);
 | |
| 	    dp = (struct Dimblock *) ckalloc (size);
 | |
| 	    cpn(size, (char *)namep->vdim, (char *)dp);
 | |
| 	    namep -> vdim = dp;
 | |
| 	    dp->nelt = (expptr)cpexpr(dp->nelt);
 | |
| 	    for (i = 0; i < nd; i++) {
 | |
| 		dp -> dims[i].dimsize = (expptr) cpexpr (dp -> dims[i].dimsize);
 | |
| 	    } /* for */
 | |
| 	} /* if */
 | |
| 	list -> datap = (char *) namep;
 | |
|     } /* for */
 | |
| } /* copy_data */
 | |
| 
 | |
| 
 | |
| 
 | |
| LOCAL docomleng()
 | |
| {
 | |
| 	register Extsym *p;
 | |
| 
 | |
| 	for(p = extsymtab ; p < nextext ; ++p)
 | |
| 		if(p->extstg == STGCOMMON)
 | |
| 		{
 | |
| 			if(p->maxleng!=0 && p->extleng!=0 && p->maxleng!=p->extleng
 | |
| 			    && strcmp(Blank, p->cextname) )
 | |
| 				warn1("incompatible lengths for common block %.60s",
 | |
| 				    p->fextname);
 | |
| 			if(p->maxleng < p->extleng)
 | |
| 				p->maxleng = p->extleng;
 | |
| 			p->extleng = 0;
 | |
| 		}
 | |
| }
 | |
| 
 | |
| 
 | |
| /* ROUTINES DEALING WITH AUTOMATIC AND TEMPORARY STORAGE */
 | |
| 
 | |
| frtemp(p)
 | |
| Addrp p;
 | |
| {
 | |
| 	/* put block on chain of temps to be reclaimed */
 | |
| 	holdtemps = mkchain((char *)p, holdtemps);
 | |
| }
 | |
| 
 | |
|  void
 | |
| freetemps()
 | |
| {
 | |
| 	register chainp p, p1;
 | |
| 	register Addrp q;
 | |
| 	register int t;
 | |
| 
 | |
| 	p1 = holdtemps;
 | |
| 	while(p = p1) {
 | |
| 		q = (Addrp)p->datap;
 | |
| 		t = q->vtype;
 | |
| 		if (t == TYCHAR && q->varleng != 0) {
 | |
| 			/* restore clobbered character string lengths */
 | |
| 			frexpr(q->vleng);
 | |
| 			q->vleng = ICON(q->varleng);
 | |
| 			}
 | |
| 		p1 = p->nextp;
 | |
| 		p->nextp = templist[t];
 | |
| 		templist[t] = p;
 | |
| 		}
 | |
| 	holdtemps = 0;
 | |
| 	}
 | |
| 
 | |
| /* allocate an automatic variable slot for each of   nelt   variables */
 | |
| 
 | |
| Addrp autovar(nelt0, t, lengp, name)
 | |
| register int nelt0, t;
 | |
| expptr lengp;
 | |
| char *name;
 | |
| {
 | |
| 	ftnint leng;
 | |
| 	register Addrp q;
 | |
| 	char *temp_name ();
 | |
| 	register int nelt = nelt0 > 0 ? nelt0 : 1;
 | |
| 	extern char *av_pfix[];
 | |
| 
 | |
| 	if(t == TYCHAR)
 | |
| 		if( ISICON(lengp) )
 | |
| 			leng = lengp->constblock.Const.ci;
 | |
| 		else	{
 | |
| 			Fatal("automatic variable of nonconstant length");
 | |
| 		}
 | |
| 	else
 | |
| 		leng = typesize[t];
 | |
| 
 | |
| 	q = ALLOC(Addrblock);
 | |
| 	q->tag = TADDR;
 | |
| 	q->vtype = t;
 | |
| 	if(t == TYCHAR)
 | |
| 	{
 | |
| 		q->vleng = ICON(leng);
 | |
| 		q->varleng = leng;
 | |
| 	}
 | |
| 	q->vstg = STGAUTO;
 | |
| 	q->ntempelt = nelt;
 | |
| 	q->isarray = (nelt > 1);
 | |
| 	q->memoffset = ICON(0);
 | |
| 
 | |
| 	/* kludge for nls so we can have ret_val rather than ret_val_4 */
 | |
| 	if (*name == ' ')
 | |
| 		unamstring(q, name);
 | |
| 	else {
 | |
| 		q->uname_tag = UNAM_IDENT;
 | |
| 		temp_name(av_pfix[t], ++autonum[t], q->user.ident);
 | |
| 		}
 | |
| 	if (nelt0 > 0)
 | |
| 		declare_new_addr (q);
 | |
| 	return(q);
 | |
| }
 | |
| 
 | |
| 
 | |
| /* Returns a temporary of the appropriate type.  Will reuse existing
 | |
|    temporaries when possible */
 | |
| 
 | |
| Addrp mktmpn(nelt, type, lengp)
 | |
| int nelt;
 | |
| register int type;
 | |
| expptr lengp;
 | |
| {
 | |
| 	ftnint leng;
 | |
| 	chainp p, oldp;
 | |
| 	register Addrp q;
 | |
| 
 | |
| 	if(type==TYUNKNOWN || type==TYERROR)
 | |
| 		badtype("mktmpn", type);
 | |
| 
 | |
| 	if(type==TYCHAR)
 | |
| 		if( ISICON(lengp) )
 | |
| 			leng = lengp->constblock.Const.ci;
 | |
| 		else	{
 | |
| 			err("adjustable length");
 | |
| 			return( (Addrp) errnode() );
 | |
| 		}
 | |
| 	else if (type > TYCHAR || type < TYADDR) {
 | |
| 		erri("mktmpn: unexpected type %d", type);
 | |
| 		exit(1);
 | |
| 		}
 | |
| /*
 | |
|  * if a temporary of appropriate shape is on the templist,
 | |
|  * remove it from the list and return it
 | |
|  */
 | |
| 	for(oldp=CHNULL, p=templist[type];  p  ;  oldp=p, p=p->nextp)
 | |
| 	{
 | |
| 		q = (Addrp) (p->datap);
 | |
| 		if(q->ntempelt==nelt &&
 | |
| 		    (type!=TYCHAR || q->vleng->constblock.Const.ci==leng) )
 | |
| 		{
 | |
| 			if(oldp)
 | |
| 				oldp->nextp = p->nextp;
 | |
| 			else
 | |
| 				templist[type] = p->nextp;
 | |
| 			free( (charptr) p);
 | |
| 			return(q);
 | |
| 		}
 | |
| 	}
 | |
| 	q = autovar(nelt, type, lengp, "");
 | |
| 	return(q);
 | |
| }
 | |
| 
 | |
| 
 | |
| 
 | |
| 
 | |
| /* mktmp -- create new local variable; call it something like   name
 | |
|    lengp   is taken directly, not copied */
 | |
| 
 | |
| Addrp mktmp(type, lengp)
 | |
| int type;
 | |
| expptr lengp;
 | |
| {
 | |
| 	Addrp rv;
 | |
| 	/* arrange for temporaries to be recycled */
 | |
| 	/* at the end of this statement... */
 | |
| 	rv = mktmpn(1,type,lengp);
 | |
| 	frtemp((Addrp)cpexpr((expptr)rv));
 | |
| 	return rv;
 | |
| }
 | |
| 
 | |
| /* mktmp0 omits frtemp() */
 | |
| Addrp mktmp0(type, lengp)
 | |
| int type;
 | |
| expptr lengp;
 | |
| {
 | |
| 	Addrp rv;
 | |
| 	/* arrange for temporaries to be recycled */
 | |
| 	/* when this Addrp is freed */
 | |
| 	rv = mktmpn(1,type,lengp);
 | |
| 	rv->istemp = YES;
 | |
| 	return rv;
 | |
| }
 | |
| 
 | |
| /* VARIOUS ROUTINES FOR PROCESSING DECLARATIONS */
 | |
| 
 | |
| /* comblock -- Declare a new common block.  Input parameters name the block;
 | |
|    s   will be NULL if the block is unnamed */
 | |
| 
 | |
| Extsym *comblock(s)
 | |
|  register char *s;
 | |
| {
 | |
| 	Extsym *p;
 | |
| 	register char *t;
 | |
| 	register int c, i;
 | |
| 	char cbuf[256], *s0;
 | |
| 
 | |
| /* Give the unnamed common block a unique name */
 | |
| 
 | |
| 	if(*s == 0)
 | |
| 		p = mkext(Blank,Blank);
 | |
| 	else {
 | |
| 		s0 = s;
 | |
| 		t = cbuf;
 | |
| 		for(i = 0; c = *t = *s++; t++)
 | |
| 			if (c == '_')
 | |
| 				i = 1;
 | |
| 		if (i)
 | |
| 			*t++ = '_';
 | |
| 		t[0] = '_';
 | |
| 		t[1] = 0;
 | |
| 		p = mkext(s0,cbuf);
 | |
| 		}
 | |
| 	if(p->extstg == STGUNKNOWN)
 | |
| 		p->extstg = STGCOMMON;
 | |
| 	else if(p->extstg != STGCOMMON)
 | |
| 	{
 | |
| 		errstr("%.68s cannot be a common block name", s);
 | |
| 		return(0);
 | |
| 	}
 | |
| 
 | |
| 	return( p );
 | |
| }
 | |
| 
 | |
| 
 | |
| /* incomm -- add a new variable to a common declaration */
 | |
| 
 | |
| incomm(c, v)
 | |
| Extsym *c;
 | |
| Namep v;
 | |
| {
 | |
| 	if (!c)
 | |
| 		return;
 | |
| 	if(v->vstg != STGUNKNOWN && !v->vimplstg)
 | |
| 		dclerr(v->vstg == STGARG
 | |
| 			? "dummy arguments cannot be in common"
 | |
| 			: "incompatible common declaration", v);
 | |
| 	else
 | |
| 	{
 | |
| 		v->vstg = STGCOMMON;
 | |
| 		c->extp = mkchain((char *)v, c->extp);
 | |
| 	}
 | |
| }
 | |
| 
 | |
| 
 | |
| 
 | |
| 
 | |
| /* settype -- set the type or storage class of a Namep object.  If
 | |
|    v -> vstg == STGUNKNOWN && type < 0,   attempt to reset vstg to be
 | |
|    -type.  This function will not change any earlier definitions in   v,
 | |
|    in will only attempt to fill out more information give the other params */
 | |
| 
 | |
| settype(v, type, length)
 | |
| register Namep  v;
 | |
| register int type;
 | |
| register ftnint length;
 | |
| {
 | |
| 	int type1;
 | |
| 
 | |
| 	if(type == TYUNKNOWN)
 | |
| 		return;
 | |
| 
 | |
| 	if(type==TYSUBR && v->vtype!=TYUNKNOWN && v->vstg==STGARG)
 | |
| 	{
 | |
| 		v->vtype = TYSUBR;
 | |
| 		frexpr(v->vleng);
 | |
| 		v->vleng = 0;
 | |
| 		v->vimpltype = 0;
 | |
| 	}
 | |
| 	else if(type < 0)	/* storage class set */
 | |
| 	{
 | |
| 		if(v->vstg == STGUNKNOWN)
 | |
| 			v->vstg = - type;
 | |
| 		else if(v->vstg != -type)
 | |
| 			dclerr("incompatible storage declarations", v);
 | |
| 	}
 | |
| 	else if(v->vtype == TYUNKNOWN || v->vimpltype && v->vtype != type)
 | |
| 	{
 | |
| 		if( (v->vtype = lengtype(type, length))==TYCHAR )
 | |
| 			if (length>=0)
 | |
| 				v->vleng = ICON(length);
 | |
| 			else if (parstate >= INDATA)
 | |
| 				v->vleng = ICON(1);	/* avoid a memory fault */
 | |
| 		v->vimpltype = 0;
 | |
| 
 | |
| 		if (v->vclass == CLPROC) {
 | |
| 			if (v->vstg == STGEXT
 | |
| 			 && (type1 = extsymtab[v->vardesc.varno].extype)
 | |
| 			 &&  type1 != v->vtype)
 | |
| 				changedtype(v);
 | |
| 			else if (v->vprocclass == PTHISPROC
 | |
| 					&& parstate >= INDATA
 | |
| 					&& !xretslot[type])
 | |
| 				xretslot[type] = autovar(ONEOF(type,
 | |
| 					MSKCOMPLEX|MSKCHAR) ? 0 : 1, type,
 | |
| 					v->vleng, " ret_val");
 | |
| 				/* not completely right, but enough to */
 | |
| 				/* avoid memory faults; we won't */
 | |
| 				/* emit any C as we have illegal Fortran */
 | |
| 			}
 | |
| 	}
 | |
| 	else if(v->vtype!=type) {
 | |
|  incompat:
 | |
| 		dclerr("incompatible type declarations", v);
 | |
| 		}
 | |
| 	else if (type==TYCHAR)
 | |
| 		if (v->vleng && v->vleng->constblock.Const.ci != length)
 | |
| 			goto incompat;
 | |
| 		else if (parstate >= INDATA)
 | |
| 			v->vleng = ICON(1);	/* avoid a memory fault */
 | |
| }
 | |
| 
 | |
| 
 | |
| 
 | |
| 
 | |
| 
 | |
| /* lengtype -- returns the proper compiler type, given input of Fortran
 | |
|    type and length specifier */
 | |
| 
 | |
| lengtype(type, len)
 | |
| register int type;
 | |
| ftnint len;
 | |
| {
 | |
| 	register int length = (int)len;
 | |
| 	switch(type)
 | |
| 	{
 | |
| 	case TYREAL:
 | |
| 		if(length == typesize[TYDREAL])
 | |
| 			return(TYDREAL);
 | |
| 		if(length == typesize[TYREAL])
 | |
| 			goto ret;
 | |
| 		break;
 | |
| 
 | |
| 	case TYCOMPLEX:
 | |
| 		if(length == typesize[TYDCOMPLEX])
 | |
| 			return(TYDCOMPLEX);
 | |
| 		if(length == typesize[TYCOMPLEX])
 | |
| 			goto ret;
 | |
| 		break;
 | |
| 
 | |
| 	case TYSHORT:
 | |
| 	case TYDREAL:
 | |
| 	case TYDCOMPLEX:
 | |
| 	case TYCHAR:
 | |
| 	case TYUNKNOWN:
 | |
| 	case TYSUBR:
 | |
| 	case TYERROR:
 | |
| 		goto ret;
 | |
| 
 | |
| 	case TYLOGICAL:
 | |
| 		if(length == typesize[TYLOGICAL])
 | |
| 			goto ret;
 | |
| 		if(length == 1 || length == 2) {
 | |
| 			erri("treating LOGICAL*%d as LOGICAL", length);
 | |
| 			--nerr;	/* allow generation of .c file */
 | |
| 			goto ret;
 | |
| 			}
 | |
| 		break;
 | |
| 
 | |
| 	case TYLONG:
 | |
| 		if(length == 0)
 | |
| 			return(tyint);
 | |
| 		if(length == typesize[TYSHORT])
 | |
| 			return(TYSHORT);
 | |
| 		if(length == typesize[TYLONG])
 | |
| 			goto ret;
 | |
| 		break;
 | |
| 	default:
 | |
| 		badtype("lengtype", type);
 | |
| 	}
 | |
| 
 | |
| 	if(len != 0)
 | |
| 		err("incompatible type-length combination");
 | |
| 
 | |
| ret:
 | |
| 	return(type);
 | |
| }
 | |
| 
 | |
| 
 | |
| 
 | |
| 
 | |
| 
 | |
| /* setintr -- Set Intrinsic function */
 | |
| 
 | |
| setintr(v)
 | |
| register Namep  v;
 | |
| {
 | |
| 	int k;
 | |
| 
 | |
| 	if(v->vstg == STGUNKNOWN)
 | |
| 		v->vstg = STGINTR;
 | |
| 	else if(v->vstg!=STGINTR)
 | |
| 		dclerr("incompatible use of intrinsic function", v);
 | |
| 	if(v->vclass==CLUNKNOWN)
 | |
| 		v->vclass = CLPROC;
 | |
| 	if(v->vprocclass == PUNKNOWN)
 | |
| 		v->vprocclass = PINTRINSIC;
 | |
| 	else if(v->vprocclass != PINTRINSIC)
 | |
| 		dclerr("invalid intrinsic declaration", v);
 | |
| 	if(k = intrfunct(v->fvarname)) {
 | |
| 		if ((*(struct Intrpacked *)&k).f4)
 | |
| 			if (noextflag)
 | |
| 				goto unknown;
 | |
| 			else
 | |
| 				dcomplex_seen++;
 | |
| 		v->vardesc.varno = k;
 | |
| 		}
 | |
| 	else {
 | |
|  unknown:
 | |
| 		dclerr("unknown intrinsic function", v);
 | |
| 		}
 | |
| }
 | |
| 
 | |
| 
 | |
| 
 | |
| /* setext -- Set External declaration -- assume that unknowns will become
 | |
|    procedures */
 | |
| 
 | |
| setext(v)
 | |
| register Namep  v;
 | |
| {
 | |
| 	if(v->vclass == CLUNKNOWN)
 | |
| 		v->vclass = CLPROC;
 | |
| 	else if(v->vclass != CLPROC)
 | |
| 		dclerr("invalid external declaration", v);
 | |
| 
 | |
| 	if(v->vprocclass == PUNKNOWN)
 | |
| 		v->vprocclass = PEXTERNAL;
 | |
| 	else if(v->vprocclass != PEXTERNAL)
 | |
| 		dclerr("invalid external declaration", v);
 | |
| } /* setext */
 | |
| 
 | |
| 
 | |
| 
 | |
| 
 | |
| /* create dimensions block for array variable */
 | |
| 
 | |
| setbound(v, nd, dims)
 | |
| register Namep  v;
 | |
| int nd;
 | |
| struct Dims dims[ ];
 | |
| {
 | |
| 	register expptr q, t;
 | |
| 	register struct Dimblock *p;
 | |
| 	int i;
 | |
| 	extern chainp new_vars;
 | |
| 	char buf[256];
 | |
| 
 | |
| 	if(v->vclass == CLUNKNOWN)
 | |
| 		v->vclass = CLVAR;
 | |
| 	else if(v->vclass != CLVAR)
 | |
| 	{
 | |
| 		dclerr("only variables may be arrays", v);
 | |
| 		return;
 | |
| 	}
 | |
| 
 | |
| 	v->vdim = p = (struct Dimblock *)
 | |
| 	    ckalloc( sizeof(int) + (3+2*nd)*sizeof(expptr) );
 | |
| 	p->ndim = nd--;
 | |
| 	p->nelt = ICON(1);
 | |
| 	doin_setbound = 1;
 | |
| 
 | |
| 	for(i = 0; i <= nd; ++i)
 | |
| 	{
 | |
| 		if( (q = dims[i].ub) == NULL)
 | |
| 		{
 | |
| 			if(i == nd)
 | |
| 			{
 | |
| 				frexpr(p->nelt);
 | |
| 				p->nelt = NULL;
 | |
| 			}
 | |
| 			else
 | |
| 				err("only last bound may be asterisk");
 | |
| 			p->dims[i].dimsize = ICON(1);
 | |
| 			;
 | |
| 			p->dims[i].dimexpr = NULL;
 | |
| 		}
 | |
| 		else
 | |
| 		{
 | |
| 
 | |
| 			if(dims[i].lb)
 | |
| 			{
 | |
| 				q = mkexpr(OPMINUS, q, cpexpr(dims[i].lb));
 | |
| 				q = mkexpr(OPPLUS, q, ICON(1) );
 | |
| 			}
 | |
| 			if( ISCONST(q) )
 | |
| 			{
 | |
| 				p->dims[i].dimsize = q;
 | |
| 				p->dims[i].dimexpr = (expptr) PNULL;
 | |
| 			}
 | |
| 			else {
 | |
| 				sprintf(buf, " %s_dim%d", v->fvarname, i+1);
 | |
| 				p->dims[i].dimsize = (expptr)
 | |
| 					autovar(1, tyint, EXNULL, buf);
 | |
| 				p->dims[i].dimexpr = q;
 | |
| 				if (i == nd)
 | |
| 					v->vlastdim = new_vars;
 | |
| 				v->vdimfinish = 1;
 | |
| 			}
 | |
| 			if(p->nelt)
 | |
| 				p->nelt = mkexpr(OPSTAR, p->nelt,
 | |
| 				    cpexpr(p->dims[i].dimsize) );
 | |
| 		}
 | |
| 	}
 | |
| 
 | |
| 	q = dims[nd].lb;
 | |
| 	if(q == NULL)
 | |
| 		q = ICON(1);
 | |
| 
 | |
| 	for(i = nd-1 ; i>=0 ; --i)
 | |
| 	{
 | |
| 		t = dims[i].lb;
 | |
| 		if(t == NULL)
 | |
| 			t = ICON(1);
 | |
| 		if(p->dims[i].dimsize)
 | |
| 			q = mkexpr(OPPLUS, t, mkexpr(OPSTAR, cpexpr(p->dims[i].dimsize), q) );
 | |
| 	}
 | |
| 
 | |
| 	if( ISCONST(q) )
 | |
| 	{
 | |
| 		p->baseoffset = q;
 | |
| 		p->basexpr = NULL;
 | |
| 	}
 | |
| 	else
 | |
| 	{
 | |
| 		sprintf(buf, " %s_offset", v->fvarname);
 | |
| 		p->baseoffset = (expptr) autovar(1, tyint, EXNULL, buf);
 | |
| 		p->basexpr = q;
 | |
| 		v->vdimfinish = 1;
 | |
| 	}
 | |
| 	doin_setbound = 0;
 | |
| }
 | |
| 
 | |
| 
 | |
| 
 | |
| wr_abbrevs (outfile, function_head, vars)
 | |
| FILE *outfile;
 | |
| int function_head;
 | |
| chainp vars;
 | |
| {
 | |
|     for (; vars; vars = vars -> nextp) {
 | |
| 	Namep name = (Namep) vars -> datap;
 | |
| 	if (!name->visused)
 | |
| 		continue;
 | |
| 
 | |
| 	if (function_head)
 | |
| 	    nice_printf (outfile, "#define ");
 | |
| 	else
 | |
| 	    nice_printf (outfile, "#undef ");
 | |
| 	out_name (outfile, name);
 | |
| 
 | |
| 	if (function_head) {
 | |
| 	    Extsym *comm = &extsymtab[name -> vardesc.varno];
 | |
| 
 | |
| 	    nice_printf (outfile, " (");
 | |
| 	    extern_out (outfile, comm);
 | |
| 	    nice_printf (outfile, "%d.", comm->curno);
 | |
| 	    nice_printf (outfile, "%s)", name->cvarname);
 | |
| 	} /* if function_head */
 | |
| 	nice_printf (outfile, "\n");
 | |
|     } /* for */
 | |
| } /* wr_abbrevs */
 |