include/a.out.h

/*-
 * Copyright (c) 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      @(#)a.out.h     5.6 (Berkeley) 4/30/91
 */

#ifndef _AOUT_H_
#define _AOUT_H_

#include <sys/exec.h>

#if defined(hp300) || defined(i386)
#define __LDPGSZ        4096
#endif
#if defined(tahoe) || defined(vax)
#define __LDPGSZ        1024
#endif

#define N_GETMAGIC(ex) \
        ( (ex).a_midmag & 0xffff )
#define N_GETMID(ex) \
        ( (N_GETMAGIC_NET(ex) == ZMAGIC) ? N_GETMID_NET(ex) : \
        ((ex).a_midmag >> 16) & 0x03ff )
#define N_GETFLAG(ex) \
        ( (N_GETMAGIC_NET(ex) == ZMAGIC) ? N_GETFLAG_NET(ex) : \
        ((ex).a_midmag >> 26) & 0x3f )
#define N_SETMAGIC(ex,mag,mid,flag) \
        ( (ex).a_midmag = (((flag) & 0x3f) <<26) | (((mid) & 0x03ff) << 16) | \
        ((mag) & 0xffff) )

#define N_GETMAGIC_NET(ex) \
        (ntohl((ex).a_midmag) & 0xffff)
#define N_GETMID_NET(ex) \
        ((ntohl((ex).a_midmag) >> 16) & 0x03ff)
#define N_GETFLAG_NET(ex) \
        ((ntohl((ex).a_midmag) >> 26) & 0x3f)
#define N_SETMAGIC_NET(ex,mag,mid,flag) \
        ( (ex).a_midmag = htonl( (((flag)&0x3f)<<26) | (((mid)&0x03ff)<<16) | \
        (((mag)&0xffff)) ) )

#define N_ALIGN(ex,x) \
        (N_GETMAGIC(ex) == ZMAGIC || N_GETMAGIC(ex) == QMAGIC || \
         N_GETMAGIC_NET(ex) == ZMAGIC || N_GETMAGIC_NET(ex) == QMAGIC ? \
         ((x) + __LDPGSZ - 1) & ~(__LDPGSZ - 1) : (x))

/* Valid magic number check. */
#define N_BADMAG(ex) \
        (N_GETMAGIC(ex) != OMAGIC && N_GETMAGIC(ex) != NMAGIC && \
         N_GETMAGIC(ex) != ZMAGIC && N_GETMAGIC(ex) != QMAGIC && \
         N_GETMAGIC_NET(ex) != OMAGIC && N_GETMAGIC_NET(ex) != NMAGIC && \
         N_GETMAGIC_NET(ex) != ZMAGIC && N_GETMAGIC_NET(ex) != QMAGIC)


/* Address of the bottom of the text segment. */
#define N_TXTADDR(ex) \
        ((N_GETMAGIC(ex) == OMAGIC || N_GETMAGIC(ex) == NMAGIC || \
        N_GETMAGIC(ex) == ZMAGIC) ? 0 : __LDPGSZ)

/* Address of the bottom of the data segment. */
#define N_DATADDR(ex) \
        N_ALIGN(ex, N_TXTADDR(ex) + (ex).a_text)

/* Text segment offset. */
#define N_TXTOFF(ex) \
        (N_GETMAGIC(ex) == ZMAGIC ? __LDPGSZ : (N_GETMAGIC(ex) == QMAGIC || \
        N_GETMAGIC_NET(ex) == ZMAGIC) ? 0 : sizeof(struct exec))

/* Data segment offset. */
#define N_DATOFF(ex) \
        N_ALIGN(ex, N_TXTOFF(ex) + (ex).a_text)

/* Relocation table offset. */
#define N_RELOFF(ex) \
        N_ALIGN(ex, N_DATOFF(ex) + (ex).a_data)

/* Symbol table offset. */
#define N_SYMOFF(ex) \
        (N_RELOFF(ex) + (ex).a_trsize + (ex).a_drsize)

/* String table offset. */
#define N_STROFF(ex)    (N_SYMOFF(ex) + (ex).a_syms)

/* Relocation format. */
struct relocation_info {
        int r_address;                    /* offset in text or data segment */
        unsigned int   r_symbolnum : 24,  /* ordinal number of add symbol */
                           r_pcrel :  1,  /* 1 if value should be pc-relative */
                          r_length :  2,  /* log base 2 of value's width */
                          r_extern :  1,  /* 1 if need to add symbol to value */
                         r_baserel :  1,  /* linkage table relative */
                        r_jmptable :  1,  /* relocate to jump table */
                        r_relative :  1,  /* load address relative */
                            r_copy :  1;  /* run time copy */
};

#define _AOUT_INCLUDE_
#include <nlist.h>

#endif /* !_AOUT_H_ */