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a.out.h revision 1.3 
      1 /*-
      2  * Copyright (c) 1991 The Regents of the University of California.
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  *
     33  *	@(#)a.out.h	5.6 (Berkeley) 4/30/91
     34  */
     35 
     36 #ifndef	_AOUT_H_
     37 #define	_AOUT_H_
     38 
     39 #include <sys/exec.h>
     40 
     41 #if defined(hp300) || defined(i386)
     42 #define	__LDPGSZ	4096
     43 #endif
     44 #if defined(tahoe) || defined(vax)
     45 #define	__LDPGSZ	1024
     46 #endif
     47 
     48 #define N_ALIGN(ex,x) \
     49 	((ex).a_magic == ZMAGIC || (ex).a_magic == QMAGIC ? \
     50 	 ((x) + __LDPGSZ - 1) & ~(__LDPGSZ - 1) : (x))
     51 
     52 /* Valid magic number check. */
     53 #define	N_BADMAG(ex) \
     54 	((ex).a_magic != NMAGIC && (ex).a_magic != OMAGIC && \
     55 	    (ex).a_magic != ZMAGIC && (ex).a_magic != QMAGIC)
     56 
     57 /* Address of the bottom of the text segment. */
     58 #define N_TXTADDR(ex)	((ex).a_magic == QMAGIC ? __LDPGSZ : 0)
     59 
     60 /* Address of the bottom of the data segment. */
     61 #define N_DATADDR(ex) \
     62 	N_ALIGN(ex, N_TXTADDR(ex) + (ex).a_text)
     63 
     64 /* Text segment offset. */
     65 #define	N_TXTOFF(ex) \
     66 	((ex).a_magic == ZMAGIC ? __LDPGSZ \
     67 	 : ((ex).a_magic == QMAGIC ? 0 : sizeof(struct exec)))
     68 
     69 /* Data segment offset. */
     70 #define	N_DATOFF(ex) \
     71 	N_ALIGN(ex, N_TXTOFF(ex) + (ex).a_text)
     72 
     73 /* Symbol table offset. */
     74 #define N_SYMOFF(ex) \
     75 	(N_DATOFF(ex) + (ex).a_data + (ex).a_trsize + (ex).a_drsize)
     76 
     77 /* String table offset. */
     78 #define	N_STROFF(ex) 	(N_SYMOFF(ex) + (ex).a_syms)
     79 
     80 /* Relocation format. */
     81 struct relocation_info {
     82 	int r_address;			/* offset in text or data segment */
     83 	unsigned int r_symbolnum : 24,	/* ordinal number of add symbol */
     84 			 r_pcrel :  1,	/* 1 if value should be pc-relative */
     85 			r_length :  2,	/* log base 2 of value's width */
     86 			r_extern :  1,	/* 1 if need to add symbol to value */
     87 				 :  4;	/* reserved */
     88 };
     89 
     90 #define _AOUT_INCLUDE_
     91 #include <nlist.h>
     92 
     93 #endif /* !_AOUT_H_ */
     94