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76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/* $Id: rplcons.c,v 1.3 1999/05/31 23:35:41 sybalsky Exp $ (C) Copyright Venue, All Rights Reserved
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*/
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/************************************************************************/
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/* */
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/* (C) Copyright 1989-95 Venue. All Rights Reserved. */
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/* Manufactured in the United States of America. */
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/* */
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/************************************************************************/
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#include "version.h"
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/***********************************************************************/
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/*
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File Name : rplcons.c
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Desc : rplcons
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Including : rplcons
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OP_rplcons
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*/
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/**********************************************************************/
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#include "car-cdrdefs.h" // for N_OP_rplacd
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#include "conspagedefs.h" // for cons
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#include "emlglob.h"
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#include "lispemul.h" // for LispPTR, state, ERROR_EXIT, NIL_PTR
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#include "lspglob.h"
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#include "lsptypes.h" // for Listp
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#include "rplconsdefs.h" // for N_OP_rplcons
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/***************************************************/
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LispPTR N_OP_rplcons(LispPTR list, LispPTR item) {
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#ifndef NEWCDRCODING
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struct conspage *conspage;
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ConsCell *new_cell;
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ConsCell *list68k;
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LispPTR page;
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#endif
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if (!Listp(list)) ERROR_EXIT(item);
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/* There are some rest Cell and "list" must be ONPAGE cdr_coded */
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#ifndef NEWCDRCODING
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page = POINTER_PAGE(list);
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list68k = (ConsCell *)NativeAligned4FromLAddr(list);
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if ((GetCONSCount(page) != 0) && (list68k->cdr_code > CDR_MAXINDIRECT)) {
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GCLOOKUP(item, ADDREF);
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GCLOOKUP(cdr(list), DELREF);
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conspage = (struct conspage *)NativeAligned4FromLPage(page);
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new_cell = (ConsCell *)GetNewCell_68k(conspage);
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conspage->count--;
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conspage->next_cell = ((freecons *)new_cell)->next_free;
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new_cell->car_field = item;
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new_cell->cdr_code = CDR_NIL;
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ListpDTD->dtd_cnt0++;
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list68k->cdr_code = CDR_ONPAGE | ((LAddrFromNative(new_cell) & 0xff) >> 1);
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return (LAddrFromNative(new_cell));
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} else
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#endif /* ndef NEWCDRCODING */
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{
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N_OP_rplacd(list, item = cons(item, NIL_PTR));
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return (item);
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}
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}
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