sys/sys/imgact_aout.h

   1 /*-
   2  * Copyright (c) 1992, 1993
   3  *      The Regents of the University of California.  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  *      from: @(#)exec.h        8.1 (Berkeley) 6/11/93
  34  * $FreeBSD: src/sys/sys/imgact_aout.h,v 1.13 1999/12/29 04:24:41 peter Exp $
  35  * $DragonFly: src/sys/sys/imgact_aout.h,v 1.6 2007/02/03 09:56:04 y0netan1 Exp $
  36  */
  37
  38 #ifndef _IMGACT_AOUT_H_
  39 #define _IMGACT_AOUT_H_
  40
  41 #ifndef _SYS_TYPES_H_
  42 #include <sys/types.h>
  43 #endif
  44
  45 #define N_GETMAGIC(ex) \
  46         ( (ex).a_midmag & 0xffff )
  47 #define N_GETMID(ex) \
  48         ( (N_GETMAGIC_NET(ex) == ZMAGIC) ? N_GETMID_NET(ex) : \
  49         ((ex).a_midmag >> 16) & 0x03ff )
  50 #define N_GETFLAG(ex) \
  51         ( (N_GETMAGIC_NET(ex) == ZMAGIC) ? N_GETFLAG_NET(ex) : \
  52         ((ex).a_midmag >> 26) & 0x3f )
  53 #define N_SETMAGIC(ex,mag,mid,flag) \
  54         ( (ex).a_midmag = (((flag) & 0x3f) <<26) | (((mid) & 0x03ff) << 16) | \
  55         ((mag) & 0xffff) )
  56
  57 #define N_GETMAGIC_NET(ex) \
  58         (ntohl((ex).a_midmag) & 0xffff)
  59 #define N_GETMID_NET(ex) \
  60         ((ntohl((ex).a_midmag) >> 16) & 0x03ff)
  61 #define N_GETFLAG_NET(ex) \
  62         ((ntohl((ex).a_midmag) >> 26) & 0x3f)
  63 #define N_SETMAGIC_NET(ex,mag,mid,flag) \
  64         ( (ex).a_midmag = htonl( (((flag)&0x3f)<<26) | (((mid)&0x03ff)<<16) | \
  65         (((mag)&0xffff)) ) )
  66
  67 #define N_ALIGN(ex,x) \
  68         (N_GETMAGIC(ex) == ZMAGIC || N_GETMAGIC(ex) == QMAGIC || \
  69          N_GETMAGIC_NET(ex) == ZMAGIC || N_GETMAGIC_NET(ex) == QMAGIC ? \
  70          ((x) + __LDPGSZ - 1) & ~(unsigned long)(__LDPGSZ - 1) : (x))
  71
  72 /* Valid magic number check. */
  73 #define N_BADMAG(ex) \
  74         (N_GETMAGIC(ex) != OMAGIC && N_GETMAGIC(ex) != NMAGIC && \
  75          N_GETMAGIC(ex) != ZMAGIC && N_GETMAGIC(ex) != QMAGIC && \
  76          N_GETMAGIC_NET(ex) != OMAGIC && N_GETMAGIC_NET(ex) != NMAGIC && \
  77          N_GETMAGIC_NET(ex) != ZMAGIC && N_GETMAGIC_NET(ex) != QMAGIC)
  78
  79
  80 /* Address of the bottom of the text segment. */
  81 /*
  82  * This can not be done right.  Abuse a_entry in some cases to handle kernels.
  83  */
  84 #define N_TXTADDR(ex) \
  85         ((N_GETMAGIC(ex) == OMAGIC || N_GETMAGIC(ex) == NMAGIC || \
  86         N_GETMAGIC(ex) == ZMAGIC) ? \
  87         ((ex).a_entry < (ex).a_text ? 0 : (ex).a_entry & ~__LDPGSZ) : __LDPGSZ)
  88
  89 /* Address of the bottom of the data segment. */
  90 #define N_DATADDR(ex) \
  91         N_ALIGN(ex, N_TXTADDR(ex) + (ex).a_text)
  92
  93 /* Text segment offset. */
  94 #define N_TXTOFF(ex) \
  95         (N_GETMAGIC(ex) == ZMAGIC ? __LDPGSZ : (N_GETMAGIC(ex) == QMAGIC || \
  96         N_GETMAGIC_NET(ex) == ZMAGIC) ? 0 : sizeof(struct exec))
  97
  98 /* Data segment offset. */
  99 #define N_DATOFF(ex) \
 100         N_ALIGN(ex, N_TXTOFF(ex) + (ex).a_text)
 101
 102 /* Relocation table offset. */
 103 #define N_RELOFF(ex) \
 104         N_ALIGN(ex, N_DATOFF(ex) + (ex).a_data)
 105
 106 /* Symbol table offset. */
 107 #define N_SYMOFF(ex) \
 108         (N_RELOFF(ex) + (ex).a_trsize + (ex).a_drsize)
 109
 110 /* String table offset. */
 111 #define N_STROFF(ex)    (N_SYMOFF(ex) + (ex).a_syms)
 112
 113 /*
 114  * Header prepended to each a.out file.
 115  * only manipulate the a_midmag field via the
 116  * N_SETMAGIC/N_GET{MAGIC,MID,FLAG} macros in a.out.h
 117  */
 118
 119 struct exec {
 120      unsigned long      a_midmag;       /* flags<<26 | mid<<16 | magic */
 121      unsigned long      a_text;         /* text segment size */
 122      unsigned long      a_data;         /* initialized data size */
 123      unsigned long      a_bss;          /* uninitialized data size */
 124      unsigned long      a_syms;         /* symbol table size */
 125      unsigned long      a_entry;        /* entry point */
 126      unsigned long      a_trsize;       /* text relocation size */
 127      unsigned long      a_drsize;       /* data relocation size */
 128 };
 129 #define a_magic a_midmag /* XXX Hack to work with current kern_execve.c */
 130
 131 /* a_magic */
 132 #define OMAGIC          0407    /* old impure format */
 133 #define NMAGIC          0410    /* read-only text */
 134 #define ZMAGIC          0413    /* demand load format */
 135 #define QMAGIC          0314    /* "compact" demand load format */
 136
 137 /* a_mid */
 138 #define MID_ZERO        0       /* unknown - implementation dependent */
 139 #define MID_SUN010      1       /* sun 68010/68020 binary */
 140 #define MID_SUN020      2       /* sun 68020-only binary */
 141 #define MID_I386        134     /* i386 BSD binary */
 142 #define MID_SPARC       138     /* sparc */
 143 #define MID_HP200       200     /* hp200 (68010) BSD binary */
 144 #define MID_HP300       300     /* hp300 (68020+68881) BSD binary */
 145 #define MID_HPUX        0x20C   /* hp200/300 HP-UX binary */
 146 #define MID_HPUX800     0x20B   /* hp800 HP-UX binary */
 147
 148 /*
 149  * a_flags
 150  */
 151 #define EX_PIC          0x10    /* contains position independent code */
 152 #define EX_DYNAMIC      0x20    /* contains run-time link-edit info */
 153 #define EX_DPMASK       0x30    /* mask for the above */
 154
 155 #ifdef _KERNEL
 156 struct proc;
 157 struct vnode;
 158 #endif
 159
 160 #endif /* !_IMGACT_AOUT_H_ */