129 lines
4.8 KiB
C
129 lines
4.8 KiB
C
/*-
|
|
* 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_ */
|