usr/src/tools/btxld/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  * 4. 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  * $FreeBSD$
  31  */
  32
  33 #ifndef _IMGACT_AOUT_H_
  34 #define _IMGACT_AOUT_H_
  35
  36 #define N_GETMAGIC(ex) \
  37         ( LE_32((ex).a_midmag) & 0xffff )
  38 #define N_GETMID(ex) \
  39         ( (N_GETMAGIC_NET(ex) == ZMAGIC) ? N_GETMID_NET(ex) : \
  40         ((ex).a_midmag >> 16) & 0x03ff )
  41 #define N_GETFLAG(ex) \
  42         ( (N_GETMAGIC_NET(ex) == ZMAGIC) ? N_GETFLAG_NET(ex) : \
  43         ((ex).a_midmag >> 26) & 0x3f )
  44 #define N_SETMAGIC(ex,mag,mid,flag) \
  45         ( (ex).a_midmag = LE_32((((flag) & 0x3f) <<26) | \
  46         (((mid) & 0x03ff) << 16) | \
  47         ((mag) & 0xffff)) )
  48
  49 #define N_GETMAGIC_NET(ex) \
  50         (ntohl((ex).a_midmag) & 0xffff)
  51 #define N_GETMID_NET(ex) \
  52         ((ntohl((ex).a_midmag) >> 16) & 0x03ff)
  53 #define N_GETFLAG_NET(ex) \
  54         ((ntohl((ex).a_midmag) >> 26) & 0x3f)
  55 #define N_SETMAGIC_NET(ex,mag,mid,flag) \
  56         ( (ex).a_midmag = htonl( (((flag)&0x3f)<<26) | (((mid)&0x03ff)<<16) \
  57         | (((mag)&0xffff)) ) )
  58
  59 #define N_ALIGN(ex,x) \
  60         (N_GETMAGIC(ex) == ZMAGIC || N_GETMAGIC(ex) == QMAGIC || \
  61          N_GETMAGIC_NET(ex) == ZMAGIC || N_GETMAGIC_NET(ex) == QMAGIC ? \
  62          ((x) + __LDPGSZ - 1) & ~(uint32_t)(__LDPGSZ - 1) : (x))
  63
  64 /* Valid magic number check. */
  65 #define N_BADMAG(ex) \
  66         (N_GETMAGIC(ex) != OMAGIC && N_GETMAGIC(ex) != NMAGIC && \
  67          N_GETMAGIC(ex) != ZMAGIC && N_GETMAGIC(ex) != QMAGIC && \
  68          N_GETMAGIC_NET(ex) != OMAGIC && N_GETMAGIC_NET(ex) != NMAGIC && \
  69          N_GETMAGIC_NET(ex) != ZMAGIC && N_GETMAGIC_NET(ex) != QMAGIC)
  70
  71
  72 /* Address of the bottom of the text segment. */
  73 /*
  74  * This can not be done right.  Abuse a_entry in some cases to handle kernels.
  75  */
  76 #define N_TXTADDR(ex) \
  77         ((N_GETMAGIC(ex) == OMAGIC || N_GETMAGIC(ex) == NMAGIC || \
  78         N_GETMAGIC(ex) == ZMAGIC) ? \
  79         (le32toh((ex).a_entry) < le32toh((ex).a_text) ? 0 : \
  80         le32toh((ex).a_entry) & ~__LDPGSZ) : __LDPGSZ)
  81
  82 /* Address of the bottom of the data segment. */
  83 #define N_DATADDR(ex) \
  84         N_ALIGN(ex, N_TXTADDR(ex) + le32toh((ex).a_text))
  85
  86 /* Text segment offset. */
  87 #define N_TXTOFF(ex) \
  88         (N_GETMAGIC(ex) == ZMAGIC ? __LDPGSZ : (N_GETMAGIC(ex) == QMAGIC || \
  89         N_GETMAGIC_NET(ex) == ZMAGIC) ? 0 : sizeof(struct exec))
  90
  91 /* Data segment offset. */
  92 #define N_DATOFF(ex) \
  93         N_ALIGN(ex, N_TXTOFF(ex) + le32toh((ex).a_text))
  94
  95 /* Relocation table offset. */
  96 #define N_RELOFF(ex) \
  97         N_ALIGN(ex, N_DATOFF(ex) + le32toh((ex).a_data))
  98
  99 /* Symbol table offset. */
 100 #define N_SYMOFF(ex) \
 101         (N_RELOFF(ex) + le32toh((ex).a_trsize) + le32toh((ex).a_drsize))
 102
 103 /* String table offset. */
 104 #define N_STROFF(ex)    (N_SYMOFF(ex) + le32toh((ex).a_syms))
 105
 106 /*
 107  * Header prepended to each a.out file.
 108  * Only manipulate the a_midmag field via the
 109  * N_SETMAGIC/N_GET{MAGIC,MID,FLAG} macros.
 110  */
 111
 112 struct exec {
 113      uint32_t   a_midmag;       /* flags<<26 | mid<<16 | magic */
 114      uint32_t   a_text;         /* text segment size */
 115      uint32_t   a_data;         /* initialized data size */
 116      uint32_t   a_bss;          /* uninitialized data size */
 117      uint32_t   a_syms;         /* symbol table size */
 118      uint32_t   a_entry;        /* entry point */
 119      uint32_t   a_trsize;       /* text relocation size */
 120      uint32_t   a_drsize;       /* data relocation size */
 121 };
 122 #define a_magic a_midmag        /* Hack for emulators */
 123
 124 /* a_magic */
 125 #define OMAGIC          0407    /* old impure format */
 126 #define NMAGIC          0410    /* read-only text */
 127 #define ZMAGIC          0413    /* demand load format */
 128 #define QMAGIC          0314    /* "compact" demand load format */
 129
 130 /* a_mid */
 131 #define MID_ZERO        0       /* unknown - implementation dependent */
 132 #define MID_SUN010      1       /* sun 68010/68020 binary */
 133 #define MID_SUN020      2       /* sun 68020-only binary */
 134 #define MID_I386        134     /* i386 BSD binary */
 135 #define MID_SPARC       138     /* sparc */
 136 #define MID_ARM6        143     /* ARM6 */
 137 #define MID_HP200       200     /* hp200 (68010) BSD binary */
 138 #define MID_HP300       300     /* hp300 (68020+68881) BSD binary */
 139 #define MID_HPUX        0x20C   /* hp200/300 HP-UX binary */
 140 #define MID_HPUX800     0x20B   /* hp800 HP-UX binary */
 141
 142 /*
 143  * a_flags
 144  */
 145 #define EX_PIC          0x10    /* contains position independent code */
 146 #define EX_DYNAMIC      0x20    /* contains run-time link-edit info */
 147 #define EX_DPMASK       0x30    /* mask for the above */
 148
 149 #ifdef _KERNEL
 150 struct thread;
 151 struct vnode;
 152
 153 int     aout_coredump(struct thread *td, struct vnode *vp, off_t limit,
 154     int flags);
 155 #endif
 156
 157 #endif /* !_IMGACT_AOUT_H_ */