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. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  *      from: @(#)exec.h        8.1 (Berkeley) 6/11/93
  30  * $FreeBSD: src/sys/sys/imgact_aout.h,v 1.13 1999/12/29 04:24:41 peter Exp $
  31  */
  32
  33 #ifndef _SYS_IMGACT_AOUT_H_
  34 #define _SYS_IMGACT_AOUT_H_
  35
  36 #ifndef _SYS_TYPES_H_
  37 #include <sys/types.h>
  38 #endif
  39
  40 #define N_GETMAGIC(ex) \
  41         ( (ex).a_midmag & 0xffff )
  42 #define N_GETMID(ex) \
  43         ( (N_GETMAGIC_NET(ex) == ZMAGIC) ? N_GETMID_NET(ex) : \
  44         ((ex).a_midmag >> 16) & 0x03ff )
  45 #define N_GETFLAG(ex) \
  46         ( (N_GETMAGIC_NET(ex) == ZMAGIC) ? N_GETFLAG_NET(ex) : \
  47         ((ex).a_midmag >> 26) & 0x3f )
  48 #define N_SETMAGIC(ex,mag,mid,flag) \
  49         ( (ex).a_midmag = (((flag) & 0x3f) <<26) | (((mid) & 0x03ff) << 16) | \
  50         ((mag) & 0xffff) )
  51
  52 #define N_GETMAGIC_NET(ex) \
  53         (ntohl((ex).a_midmag) & 0xffff)
  54 #define N_GETMID_NET(ex) \
  55         ((ntohl((ex).a_midmag) >> 16) & 0x03ff)
  56 #define N_GETFLAG_NET(ex) \
  57         ((ntohl((ex).a_midmag) >> 26) & 0x3f)
  58 #define N_SETMAGIC_NET(ex,mag,mid,flag) \
  59         ( (ex).a_midmag = htonl( (((flag)&0x3f)<<26) | (((mid)&0x03ff)<<16) | \
  60         (((mag)&0xffff)) ) )
  61
  62 #define N_ALIGN(ex,x) \
  63         (N_GETMAGIC(ex) == ZMAGIC || N_GETMAGIC(ex) == QMAGIC || \
  64          N_GETMAGIC_NET(ex) == ZMAGIC || N_GETMAGIC_NET(ex) == QMAGIC ? \
  65          ((x) + __LDPGSZ - 1) & ~(unsigned long)(__LDPGSZ - 1) : (x))
  66
  67 /* Valid magic number check. */
  68 #define N_BADMAG(ex) \
  69         (N_GETMAGIC(ex) != OMAGIC && N_GETMAGIC(ex) != NMAGIC && \
  70          N_GETMAGIC(ex) != ZMAGIC && N_GETMAGIC(ex) != QMAGIC && \
  71          N_GETMAGIC_NET(ex) != OMAGIC && N_GETMAGIC_NET(ex) != NMAGIC && \
  72          N_GETMAGIC_NET(ex) != ZMAGIC && N_GETMAGIC_NET(ex) != QMAGIC)
  73
  74
  75 /* Address of the bottom of the text segment. */
  76 /*
  77  * This can not be done right.  Abuse a_entry in some cases to handle kernels.
  78  */
  79 #define N_TXTADDR(ex) \
  80         ((N_GETMAGIC(ex) == OMAGIC || N_GETMAGIC(ex) == NMAGIC || \
  81         N_GETMAGIC(ex) == ZMAGIC) ? \
  82         ((ex).a_entry < (ex).a_text ? 0 : (ex).a_entry & ~__LDPGSZ) : __LDPGSZ)
  83
  84 /* Address of the bottom of the data segment. */
  85 #define N_DATADDR(ex) \
  86         N_ALIGN(ex, N_TXTADDR(ex) + (ex).a_text)
  87
  88 /* Text segment offset. */
  89 #define N_TXTOFF(ex) \
  90         (N_GETMAGIC(ex) == ZMAGIC ? __LDPGSZ : (N_GETMAGIC(ex) == QMAGIC || \
  91         N_GETMAGIC_NET(ex) == ZMAGIC) ? 0 : sizeof(struct exec))
  92
  93 /* Data segment offset. */
  94 #define N_DATOFF(ex) \
  95         N_ALIGN(ex, N_TXTOFF(ex) + (ex).a_text)
  96
  97 /* Relocation table offset. */
  98 #define N_RELOFF(ex) \
  99         N_ALIGN(ex, N_DATOFF(ex) + (ex).a_data)
 100
 101 /* Symbol table offset. */
 102 #define N_SYMOFF(ex) \
 103         (N_RELOFF(ex) + (ex).a_trsize + (ex).a_drsize)
 104
 105 /* String table offset. */
 106 #define N_STROFF(ex)    (N_SYMOFF(ex) + (ex).a_syms)
 107
 108 /*
 109  * Header prepended to each a.out file.
 110  * only manipulate the a_midmag field via the
 111  * N_SETMAGIC/N_GET{MAGIC,MID,FLAG} macros in a.out.h
 112  *
 113  * AOUT_H_FORCE32 is used by btxld and stand/boot when compiling
 114  * from a 64 bit environment to generate a 32 bit a.out.h header.
 115  */
 116
 117 #ifdef AOUT_H_FORCE32
 118 typedef u_int32_t       aout_register_t;
 119 #else
 120 typedef unsigned long   aout_register_t;
 121 #endif
 122
 123 struct exec {
 124      aout_register_t    a_midmag;       /* flags<<26 | mid<<16 | magic */
 125      aout_register_t    a_text;         /* text segment size */
 126      aout_register_t    a_data;         /* initialized data size */
 127      aout_register_t    a_bss;          /* uninitialized data size */
 128      aout_register_t    a_syms;         /* symbol table size */
 129      aout_register_t    a_entry;        /* entry point */
 130      aout_register_t    a_trsize;       /* text relocation size */
 131      aout_register_t    a_drsize;       /* data relocation size */
 132 };
 133 #define a_magic a_midmag /* XXX Hack to work with current kern_execve.c */
 134
 135 /* a_magic */
 136 #define OMAGIC          0407    /* old impure format */
 137 #define NMAGIC          0410    /* read-only text */
 138 #define ZMAGIC          0413    /* demand load format */
 139 #define QMAGIC          0314    /* "compact" demand load format */
 140
 141 /* a_mid */
 142 #define MID_ZERO        0       /* unknown - implementation dependent */
 143 #define MID_SUN010      1       /* sun 68010/68020 binary */
 144 #define MID_SUN020      2       /* sun 68020-only binary */
 145 #define MID_I386        134     /* i386 BSD binary */
 146 #define MID_SPARC       138     /* sparc */
 147 #define MID_HP200       200     /* hp200 (68010) BSD binary */
 148 #define MID_HP300       300     /* hp300 (68020+68881) BSD binary */
 149 #define MID_HPUX        0x20C   /* hp200/300 HP-UX binary */
 150 #define MID_HPUX800     0x20B   /* hp800 HP-UX binary */
 151
 152 /*
 153  * a_flags
 154  */
 155 #define EX_PIC          0x10    /* contains position independent code */
 156 #define EX_DYNAMIC      0x20    /* contains run-time link-edit info */
 157 #define EX_DPMASK       0x30    /* mask for the above */
 158
 159 #ifdef _KERNEL
 160 struct proc;
 161 struct vnode;
 162 #endif
 163
 164 #endif /* !_SYS_IMGACT_AOUT_H_ */