66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
/* $Id$ */
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/*
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* (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
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*
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* This product is part of the Amsterdam Compiler Kit.
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*
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* Permission to use, sell, duplicate or disclose this software must be
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* obtained in writing. Requests for such permissions may be sent to
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*
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* Dr. Andrew S. Tanenbaum
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* Wiskundig Seminarium
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* Vrije Universiteit
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* Postbox 7161
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* 1007 MC Amsterdam
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* The Netherlands
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*
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*/
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/* Author: J.W. Stevenson */
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#include "pc.h"
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#define assert(x) /* nothing */
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#ifndef EM_WSIZE
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#define EM_WSIZE _EM_WSIZE
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#endif
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void _unp(struct descr *ad, struct descr *zd, int i, char *ap, char *zp, int noext)
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{
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if (zd->diff > ad->diff || (i -= ad->low) < 0 || (i + zd->diff) > ad->diff)
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_trp(EUNPACK);
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ap += (i * ad->size);
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i = (zd->diff + 1) * zd->size;
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if (zd->size == 1)
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{
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int* aptmp = (int*)ap;
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assert(ad->size == EM_WSIZE);
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while (--i >= 0)
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if (noext)
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*aptmp++ = *zp++ & 0377;
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else
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*aptmp++ = *zp++;
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#if EM_WSIZE > 2
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}
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else if (zd->size == 2)
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{
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int* aptmp = (int*)ap;
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short* zptmp = (short*)zp;
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assert(ad->size == EM_WSIZE);
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while (--i >= 0)
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if (noext)
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*aptmp++ = *zptmp++ & 0177777;
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else
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*aptmp++ = *zptmp++;
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#endif
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}
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else
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{
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assert(ad->size == zd->size);
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while (--i >= 0)
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*ap++ = *zp++;
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}
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}
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