bsd/ppc/exec.h

   1 /*
   2  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (c) 1994, The University of Utah and
  27  * the Center for Software Science at the University of Utah (CSS).
  28  * All rights reserved.
  29  *
  30  * Permission to use, copy, modify and distribute this software and its
  31  * documentation is hereby granted, provided that both the copyright
  32  * notice and this permission notice appear in all copies of the
  33  * software, derivative works or modified versions, and any portions
  34  * thereof, and that both notices appear in supporting documentation.
  35  *
  36  * THE UNIVERSITY OF UTAH AND CSS ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
  37  * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSS DISCLAIM ANY LIABILITY OF
  38  * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  39  *
  40  * CSS requests users of this software to return to css-dist@cs.utah.edu any
  41  * improvements that they make and grant CSS redistribution rights.
  42  *
  43  */
  44
  45 #ifndef _BSD_PPC_EXEC_H_
  46 #define _BSD_PPC_EXEC_H_
  47
  48
  49 #include <sys/appleapiopts.h>
  50
  51 #ifdef __APPLE_API_OBSOLETE
  52 /* Size of a page in an object file. */
  53 #define __LDPGSZ        4096
  54
  55 /* Valid magic number check. */
  56 #define N_BADMAG(ex) \
  57         ((ex).a_magic != NMAGIC && (ex).a_magic != OMAGIC && \
  58             (ex).a_magic != ZMAGIC)
  59
  60 /* Address of the bottom of the text segment. */
  61 #define N_TXTADDR(X)    0
  62
  63 /* Address of the bottom of the data segment. */
  64 #define N_DATADDR(ex) \
  65         (N_TXTADDR(ex) + ((ex).a_magic == OMAGIC ? (ex).a_text \
  66         : __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1))))
  67
  68 /* Text segment offset. */
  69 #define N_TXTOFF(ex) \
  70         ((ex).a_magic == ZMAGIC ? __LDPGSZ : sizeof(struct exec))
  71
  72 /* Data segment offset. */
  73 #define N_DATOFF(ex) \
  74         (N_TXTOFF(ex) + ((ex).a_magic != ZMAGIC ? (ex).a_text : \
  75         __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1))))
  76
  77 /* Symbol table offset. */
  78 #define N_SYMOFF(ex) \
  79         (N_TXTOFF(ex) + (ex).a_text + (ex).a_data + (ex).a_trsize + \
  80             (ex).a_drsize)
  81
  82 /* String table offset. */
  83 #define N_STROFF(ex)    (N_SYMOFF(ex) + (ex).a_syms)
  84
  85 /* Description of the object file header (a.out format). */
  86 struct exec {
  87 #define OMAGIC  0407            /* old impure format */
  88 #define NMAGIC  0410            /* read-only text */
  89 #define ZMAGIC  0413            /* demand load format */
  90 #define QMAGIC  0314            /* demand load format. Header in text. */
  91         unsigned int    a_magic;        /* magic number */
  92
  93         unsigned int    a_text;         /* text segment size */
  94         unsigned int    a_data;         /* initialized data size */
  95         unsigned int    a_bss;          /* uninitialized data size */
  96         unsigned int    a_syms;         /* symbol table size */
  97         unsigned int    a_entry;        /* entry point */
  98         unsigned int    a_trsize;       /* text relocation size */
  99         unsigned int    a_drsize;       /* data relocation size */
 100 };
 101
 102 /*
 103  * Address of ps_strings structure (in user space).
 104  */
 105 #define PS_STRINGS \
 106         ((struct ps_strings *)(USRSTACK - sizeof(struct ps_strings)))
 107
 108 #endif /* __APPLE_API_OBSOLETE */
 109
 110 #endif /* _BSD_PPC_EXEC_H_ */
 111