add basic data types

[unix-history] / usr / src / sys / vax / include / exec.h

/*-
* Copyright (c) 1992 The Regents of the University of California.
* All rights reserved.
*
* %sccs.include.redist.c%
*
*      @(#)exec.h      7.1 (Berkeley) %G%
*/

/* Size of a page in an object file. */
#define __LDPGSZ        1024

/* Valid magic number check. */
#define N_BADMAG(ex) \
       ((ex).a_magic != NMAGIC && (ex).a_magic != OMAGIC && \
           (ex).a_magic != ZMAGIC)

/* Address of the bottom of the text segment. */
#define N_TXTADDR(X)    0

/* Address of the bottom of the data segment. */
#define N_DATADDR(ex) \
       (N_TXTADDR(ex) + ((ex).a_magic == OMAGIC ? (ex).a_text \
       : __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1))))

/* Text segment offset. */
#define N_TXTOFF(ex) \
       ((ex).a_magic == ZMAGIC ? __LDPGSZ : sizeof(struct exec))

/* Data segment offset. */
#define N_DATOFF(ex) \
       (N_TXTOFF(ex) + ((ex).a_magic != ZMAGIC ? (ex).a_text : \
       __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1))))

/* Symbol table offset. */
#define N_SYMOFF(ex) \
       (N_TXTOFF(ex) + (ex).a_text + (ex).a_data + (ex).a_trsize + \
           (ex).a_drsize)

/* String table offset. */
#define N_STROFF(ex)    (N_SYMOFF(ex) + (ex).a_syms)

/* Description of the object file header (a.out format). */
struct exec {
#define OMAGIC  0407            /* old impure format */
#define NMAGIC  0410            /* read-only text */
#define ZMAGIC  0413            /* demand load format */
       long    a_magic;        /* magic number */

       u_long  a_text;         /* text segment size */
       u_long  a_data;         /* initialized data size */
       u_long  a_bss;          /* uninitialized data size */
       u_long  a_syms;         /* symbol table size */
       u_long  a_entry;        /* entry point */
       u_long  a_trsize;       /* text relocation size */
       u_long  a_drsize;       /* data relocation size */
};