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/*-
* Copyright (c) 1992, 1993
* 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.
*
* @(#)exec.h 8.1 (Berkeley) 6/11/93
*/
#ifndef _EXEC_H_
#define _EXEC_H_
#define __LDPGSZ 4096
/* 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)
#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))
/* 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)
#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)) ) )
/* 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)
/*
* Header prepended to each a.out file.
* only manipulate the a_midmag field via the
* N_SETMAGIC/N_GET{MAGIC,MID,FLAG} macros in a.out.h
*/
struct exec {
unsigned long a_midmag; /* htonl(flags<<26 | mid<<16 | magic) */
unsigned long a_text; /* text segment size */
unsigned long a_data; /* initialized data size */
unsigned long a_bss; /* uninitialized data size */
unsigned long a_syms; /* symbol table size */
unsigned long a_entry; /* entry point */
unsigned long a_trsize; /* text relocation size */
unsigned long a_drsize; /* data relocation size */
};
#define a_magic a_midmag /* XXX Hack to work with current kern_execve.c */
/* a_magic */
#define OMAGIC 0407 /* old impure format */
#define NMAGIC 0410 /* read-only text */
#define ZMAGIC 0413 /* demand load format */
#define QMAGIC 0314 /* "compact" demand load format */
#endif /* !_EXEC_H_ */
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