/*
	Copyright 1983
	Alcyon Corporation
	8716 Production Ave.
	San Diego, CA  92121

	@(#) getchd.c - Sep 12, 1983  REGULUS 4.1
*/

/*
	I/O independent mapping routine.  Machine specific.  Independent
	of structure padding.  Buffer must contain at least as many
	characters as is required for structure.
 */

#include "cout.h"
#include "iobuf.h"

/*
 * getchd - fills the c.out header structure from the buffer in
 *		the manner which will be understood on the current machine.
 */
int
getchd(fp,arptr)		/* returns 0 for success, -1 for failure */
FILE *fp;
struct hdr *arptr;
{
	if (lgetw(&arptr->ch_magic,fp) == -1)
		return(-1);
	if (lgetl(&arptr->ch_tsize,fp) == -1)
		return(-1);
	if (lgetl(&arptr->ch_dsize,fp) == -1)
		return(-1);
	if (lgetl(&arptr->ch_bsize,fp) == -1)
		return(-1);
	if (lgetl(&arptr->ch_ssize,fp) == -1)
		return(-1);
	if (lgetl(&arptr->ch_stksize,fp) == -1)
		return(-1);
	if (lgetl(&arptr->ch_entry,fp) == -1)
		return(-1);
	if (lgetw(&arptr->ch_rlbflg,fp) == -1)
		return(-1);
	if (arptr->ch_magic == EX_ABMAGIC) {
		if (lgetl(&arptr->ch_dstart,fp) == -1)
			return(-1);
		if (lgetl(&arptr->ch_bstart,fp) == -1)
			return(-1);
	}
	return(0);
}