129 lines
5.2 KiB
C
129 lines
5.2 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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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* 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, Lawrence Berkeley Laboratory.
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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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*
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* from: Header: exec.h,v 1.9 93/04/20 11:14:45 torek Exp
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* $Id: aout_machdep.h,v 1.1 1993/10/02 10:23:08 deraadt Exp $
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*/
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/*
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* __LDPGSZ is the page size used by the linker and by exec().
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* It may be some multiple of the ``normal'' page size, so that, e.g.,
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* the same binaries can be run on hardware with different page sizes
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* that otherwise use the same instruction set. It must be no larger
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* than CLBYTES (in param.h).
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*/
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#define __LDPGSZ 8192
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/* Valid magic number check. */
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#define N_BADMAG(ex) \
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((ex).a_magic != ZMAGIC && (ex).a_magic != NMAGIC && \
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(ex).a_magic != OMAGIC)
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/*
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* N_TXTADDR is the address of the first executable instruction: that is,
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* the place the pc could begin after an a.out is loaded, in order to run
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* the instructions in that a.out. The pc will actually be set to ex.a_entry
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* but this is the first place it could possibly reference.
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*
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* On the SPARC, binaries begin at __LDPGSZ, i.e., page 1.
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*/
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#define N_TXTADDR(ex) 8192
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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_TXTADDR(ex) + ((ex).a_magic == OMAGIC ? (ex).a_text : \
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(((ex).a_text + __LDPGSZ - 1) & ~(__LDPGSZ - 1))))
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/*
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* N_TXTOFF is the offset within an a.out file of the first executable
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* instruction: that is, the offset in the a.out of the byte that winds
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* up at N_TXTADDR.
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*
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* On the SPARC, the a.out header is included in the executable when running
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* a ZMAGIC file (but not for OMAGIC and NMAGIC).
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*/
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#define N_TXTOFF(ex) ((ex).a_magic == 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_TXTOFF(ex) + ((ex).a_magic != ZMAGIC ? (ex).a_text : \
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(((ex).a_text + __LDPGSZ - 1) & ~(__LDPGSZ - 1))))
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/* Symbol table offset. */
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#define N_SYMOFF(ex) \
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(N_TXTOFF(ex) + (ex).a_text + (ex).a_data + (ex).a_trsize + \
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(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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/* Description of the object file header (a.out format). */
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struct exec {
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u_char a_dynamic:1; /* dynamically linked */
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u_char a_toolversion:7;/* Sun toolset version XXX */
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#define MID_ZERO 0 /* unknown - implementation dependent */
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#define MID_SUN010 1 /* sun 68010/68020 binary */
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#define MID_SUN020 2 /* sun 68020-only binary */
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#define MID_SUN_SPARC 3 /* sparc binary */
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#define MID_HP200 200 /* hp200 (68010) BSD binary */
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#define MID_HP300 300 /* hp300 (68020+68881) BSD binary */
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#define MID_HPUX 0x20C /* hp200/300 HP-UX binary */
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#define MID_HPUX800 0x20B /* hp800 HP-UX binary */
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u_char a_mid; /* machine ID */
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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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u_short a_magic; /* magic number */
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u_long a_text; /* text segment size */
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u_long a_data; /* initialized data size */
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u_long a_bss; /* uninitialized data size */
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u_long a_syms; /* symbol table size */
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u_long a_entry; /* entry point */
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u_long a_trsize; /* text relocation size */
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u_long a_drsize; /* data relocation size */
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};
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#define a_machtype a_mid /* SUN compatibility */
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