source: trunk/minix/commands/aal/object.h@ 10

/* $Header: /cvsup/minix/src/commands/aal/object.h,v 1.1.1.1 2005/04/21 14:53:57 beng Exp $ */
/*
 * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
 * See the copyright notice in the ACK home directory, in the file "Copyright".
 */
#include "byte_order.h"
#include <local.h>
#include <stdio.h>

#if CHAR_UNSIGNED
#define Xchar(ch)       (ch)
#else
#define Xchar(ch)       ((ch) & 0377)
#endif

#if ! defined(BYTES_REVERSED)
#define BYTES_REVERSED 1
#endif

#if ! defined(WORDS_REVERSED)
#define WORDS_REVERSED 1
#endif

#if BYTES_REVERSED
#define uget2(c)        (Xchar((c)[0]) | ((unsigned) Xchar((c)[1]) << 8))
#define Xput2(i, c)     (((c)[0] = (i)), ((c)[1] = (i) >> 8))
#define put2(i, c)      { register int j = (i); Xput2(j, c); }
#else
#define uget2(c)        (* ((unsigned short *) (c)))
#define Xput2(i, c)     (* ((short *) (c)) = (i))
#define put2(i, c)      Xput2(i, c)
#endif

#define get2(c)         ((short) uget2(c))

#if WORDS_REVERSED || BYTES_REVERSED
#define get4(c)         (uget2(c) | ((long) uget2((c)+2) << 16))
#define put4(l, c)      { register long x=(l); \
                          Xput2((int)x,c); \
                          Xput2((int)(x>>16),(c)+2); \
                        }
#else
#define get4(c)         (* ((long *) (c)))
#define put4(l, c)      (* ((long *) (c)) = (l))
#endif

#define SECTCNT 3       /* number of sections with own output buffer */
#if BIGMACHINE
#define WBUFSIZ (8*BUFSIZ)
#else
#define WBUFSIZ BUFSIZ
#endif

struct fil {
        int     cnt;
        char    *pnow;
        char    *pbegin;
        long    currpos;
        int     fd;
        char    pbuf[WBUFSIZ];
};

extern struct fil __parts[];

#define PARTEMIT        0
#define PARTRELO        (PARTEMIT+SECTCNT)
#define PARTNAME        (PARTRELO+1)
#define PARTCHAR        (PARTNAME+1)
#ifdef SYMDBUG
#define PARTDBUG        (PARTCHAR+1)
#else
#define PARTDBUG        (PARTCHAR+0)
#endif
#define NPARTS          (PARTDBUG + 1)

#define getsect(s)      (PARTEMIT+((s)>=(SECTCNT-1)?(SECTCNT-1):(s)))