bsd/arm/exec.h

   1 /*
   2  * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
   3  */
   4 /*-
   5  * Copyright (c) 1992, 1993
   6  *      The Regents of the University of California.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  *      @(#)exec.h      8.1 (Berkeley) 6/11/93
  37  */
  38
  39 #ifndef _BSD_ARM_EXEC_H_
  40 #define _BSD_ARM_EXEC_H_
  41
  42
  43 #ifdef BSD_KERNEL_PRIVATE
  44 /* Size of a page in an object file. */
  45 #define __LDPGSZ        4096
  46
  47 /* Valid magic number check. */
  48 #define N_BADMAG(ex) \
  49         ((ex).a_magic != NMAGIC && (ex).a_magic != OMAGIC && \
  50             (ex).a_magic != ZMAGIC)
  51
  52 /* Address of the bottom of the text segment. */
  53 #define N_TXTADDR(X)    0
  54
  55 /* Address of the bottom of the data segment. */
  56 #define N_DATADDR(ex) \
  57         (N_TXTADDR(ex) + ((ex).a_magic == OMAGIC ? (ex).a_text \
  58         : __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1))))
  59
  60 /* Text segment offset. */
  61 #define N_TXTOFF(ex) \
  62         ((ex).a_magic == ZMAGIC ? __LDPGSZ : sizeof(struct exec))
  63
  64 /* Data segment offset. */
  65 #define N_DATOFF(ex) \
  66         (N_TXTOFF(ex) + ((ex).a_magic != ZMAGIC ? (ex).a_text : \
  67         __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1))))
  68
  69 /* Symbol table offset. */
  70 #define N_SYMOFF(ex) \
  71         (N_TXTOFF(ex) + (ex).a_text + (ex).a_data + (ex).a_trsize + \
  72             (ex).a_drsize)
  73
  74 /* String table offset. */
  75 #define N_STROFF(ex)    (N_SYMOFF(ex) + (ex).a_syms)
  76
  77 /* Description of the object file header (a.out format). */
  78 struct exec {
  79 #define OMAGIC  0407            /* old impure format */
  80 #define NMAGIC  0410            /* read-only text */
  81 #define ZMAGIC  0413            /* demand load format */
  82 #define QMAGIC  0314            /* demand load format. Header in text. */
  83         unsigned int    a_magic;        /* magic number */
  84
  85         unsigned int    a_text;         /* text segment size */
  86         unsigned int    a_data;         /* initialized data size */
  87         unsigned int    a_bss;          /* uninitialized data size */
  88         unsigned int    a_syms;         /* symbol table size */
  89         unsigned int    a_entry;        /* entry point */
  90         unsigned int    a_trsize;       /* text relocation size */
  91         unsigned int    a_drsize;       /* data relocation size */
  92 };
  93
  94 #endif /* BSD_KERNEL_PRIVATE */
  95
  96 #endif /* _BSD_ARM_EXEC_H_ */