130 lines
4.8 KiB
C
130 lines
4.8 KiB
C
/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)exec.h 8.1 (Berkeley) 6/11/93
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* $Id$
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*/
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#ifndef _EXEC_H_
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#define _EXEC_H_
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#define __LDPGSZ 4096
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/* Valid magic number check. */
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#define N_BADMAG(ex) \
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(N_GETMAGIC(ex) != OMAGIC && N_GETMAGIC(ex) != NMAGIC && \
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N_GETMAGIC(ex) != ZMAGIC && N_GETMAGIC(ex) != QMAGIC && \
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N_GETMAGIC_NET(ex) != OMAGIC && N_GETMAGIC_NET(ex) != NMAGIC && \
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N_GETMAGIC_NET(ex) != ZMAGIC && N_GETMAGIC_NET(ex) != QMAGIC)
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#define N_ALIGN(ex,x) \
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(N_GETMAGIC(ex) == ZMAGIC || N_GETMAGIC(ex) == QMAGIC || \
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N_GETMAGIC_NET(ex) == ZMAGIC || N_GETMAGIC_NET(ex) == QMAGIC ? \
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((x) + __LDPGSZ - 1) & ~(__LDPGSZ - 1) : (x))
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/* Address of the bottom of the text segment. */
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#define N_TXTADDR(ex) \
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((N_GETMAGIC(ex) == OMAGIC || N_GETMAGIC(ex) == NMAGIC || \
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N_GETMAGIC(ex) == ZMAGIC) ? 0 : __LDPGSZ)
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/* Address of the bottom of the data segment. */
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#define N_DATADDR(ex) \
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N_ALIGN(ex, N_TXTADDR(ex) + (ex).a_text)
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#define N_GETMAGIC(ex) \
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( (ex).a_midmag & 0xffff )
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#define N_GETMID(ex) \
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( (N_GETMAGIC_NET(ex) == ZMAGIC) ? N_GETMID_NET(ex) : \
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((ex).a_midmag >> 16) & 0x03ff )
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#define N_GETFLAG(ex) \
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( (N_GETMAGIC_NET(ex) == ZMAGIC) ? N_GETFLAG_NET(ex) : \
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((ex).a_midmag >> 26) & 0x3f )
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#define N_SETMAGIC(ex,mag,mid,flag) \
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( (ex).a_midmag = (((flag) & 0x3f) <<26) | (((mid) & 0x03ff) << 16) | \
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((mag) & 0xffff) )
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#define N_GETMAGIC_NET(ex) \
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(ntohl((ex).a_midmag) & 0xffff)
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#define N_GETMID_NET(ex) \
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((ntohl((ex).a_midmag) >> 16) & 0x03ff)
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#define N_GETFLAG_NET(ex) \
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((ntohl((ex).a_midmag) >> 26) & 0x3f)
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#define N_SETMAGIC_NET(ex,mag,mid,flag) \
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( (ex).a_midmag = htonl( (((flag)&0x3f)<<26) | (((mid)&0x03ff)<<16) | \
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(((mag)&0xffff)) ) )
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/* Text segment offset. */
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#define N_TXTOFF(ex) \
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(N_GETMAGIC(ex) == ZMAGIC ? __LDPGSZ : (N_GETMAGIC(ex) == QMAGIC || \
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N_GETMAGIC_NET(ex) == ZMAGIC) ? 0 : sizeof(struct exec))
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/* Data segment offset. */
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#define N_DATOFF(ex) \
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N_ALIGN(ex, N_TXTOFF(ex) + (ex).a_text)
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/* Relocation table offset. */
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#define N_RELOFF(ex) \
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N_ALIGN(ex, N_DATOFF(ex) + (ex).a_data)
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/* Symbol table offset. */
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#define N_SYMOFF(ex) \
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(N_RELOFF(ex) + (ex).a_trsize + (ex).a_drsize)
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/* String table offset. */
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#define N_STROFF(ex) (N_SYMOFF(ex) + (ex).a_syms)
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/*
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* Header prepended to each a.out file.
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* only manipulate the a_midmag field via the
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* N_SETMAGIC/N_GET{MAGIC,MID,FLAG} macros in a.out.h
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*/
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struct exec {
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unsigned long a_midmag; /* htonl(flags<<26 | mid<<16 | magic) */
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unsigned long a_text; /* text segment size */
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unsigned long a_data; /* initialized data size */
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unsigned long a_bss; /* uninitialized data size */
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unsigned long a_syms; /* symbol table size */
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unsigned long a_entry; /* entry point */
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unsigned long a_trsize; /* text relocation size */
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unsigned long a_drsize; /* data relocation size */
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};
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#define a_magic a_midmag /* XXX Hack to work with current kern_execve.c */
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/* a_magic */
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#define OMAGIC 0407 /* old impure format */
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#define NMAGIC 0410 /* read-only text */
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#define ZMAGIC 0413 /* demand load format */
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#define QMAGIC 0314 /* "compact" demand load format */
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#endif /* !_EXEC_H_ */
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