The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i386/ibcs2/coff.h

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    1 /*-
    2  * Copyright (c) 1994 Sean Eric Fagan
    3  * Copyright (c) 1994 Søren Schmidt
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer
   11  *    in this position and unchanged.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. The name of the author may not be used to endorse or promote products
   16  *    derived from this software without specific prior written permission
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   28  *
   29  * $FreeBSD: releng/5.2/sys/i386/ibcs2/coff.h 50477 1999-08-28 01:08:13Z peter $
   30  */
   31 
   32 #ifndef _COFF_H
   33 #define _COFF_H
   34 
   35 struct filehdr {
   36         unsigned short  f_magic;        /* magic number */
   37         unsigned short  f_nscns;        /* # of sections */
   38         long            f_timdat;       /* time stamp */
   39         long            f_symptr;       /* symbol table offset */
   40         long            f_nsyms;        /* # of symbols */
   41         unsigned short  f_opthdr;       /* size of system header */
   42         unsigned short  f_flags;        /* flags, see below */
   43 };
   44 
   45 enum filehdr_flags {
   46         F_RELFLG = 0x01,                /* relocs have been stripped */
   47         F_EXEC = 0x02,                  /* executable file (or shlib) */
   48         F_LNNO = 0x04,                  /* line numbers have been stripped */
   49         F_LSYMS = 0x08,                 /* symbols have been stripped */
   50         F_SWABD = 0x40,                 /* swabbed byte names */
   51         F_AR16WR = 0x80,                /* 16-bit, byte reversed words */
   52         F_AR32WR = 0x100                /* 32-bit, byte reversed words */
   53 };
   54 
   55 struct aouthdr {
   56         short magic;                    /* magic number -- see below */
   57         short vstamp;                   /* artifacts from a by-gone day */
   58         long tsize;                     /* */
   59         long dsize;                     /* */
   60         long bsize;                     /* */
   61         long entry;                     /* Entry point -- offset into file */
   62         long tstart;                    /* artifacts from a by-gone day */
   63         long dstart;                    /* */
   64 };
   65 
   66 #define I386_COFF       0x14c
   67 
   68 #define COFF_OMAGIC     0407            /* impure format */
   69 #define COFF_NMAGIC     0410            /* read-only text */
   70 #define COFF_ZMAGIC     0413            /* pagable from disk */
   71 #define COFF_SHLIB      0443            /* a shared library */
   72 
   73 struct scnhdr {
   74         char            s_name[8];      /* name of section (e.g., ".text") */
   75         long            s_paddr;        /* physical addr, used for standalone */
   76         long            s_vaddr;        /* virtual address */
   77         long            s_size;         /* size of section */
   78         long            s_scnptr;       /* file offset of section */
   79         long            s_relptr;       /* points to relocs for section */
   80         long            s_lnnoptr;      /* points to line numbers for section */
   81         unsigned short  s_nreloc;       /* # of relocs */
   82         unsigned short  s_nlnno;        /* # of line no's */
   83         long            s_flags;        /* section flags -- see below */
   84 };
   85 
   86 enum scnhdr_flags {
   87         STYP_REG = 0x00,        /* regular (alloc'ed, reloc'ed, loaded) */
   88         STYP_DSECT = 0x01,      /* dummy   (reloc'd) */
   89         STYP_NOLOAD = 0x02,     /* no-load (reloc'd) */
   90         STYP_GROUP = 0x04,      /* grouped */
   91         STYP_PAD = 0x08,        /* padding (loaded) */
   92         STYP_COPY = 0x10,       /* ??? */
   93         STYP_TEXT = 0x20,       /* text */
   94         STYP_DATA = 0x40,       /* data */
   95         STYP_BSS = 0x80,        /* bss */
   96         STYP_INFO = 0x200,      /* comment (!loaded, !alloc'ed, !reloc'd) */
   97         STYP_OVER = 0x400,      /* overlay (!allocated, reloc'd, !loaded) */
   98         STYP_LIB = 0x800        /* lists shared library files */
   99 };
  100 
  101 struct slhdr {
  102         long    entry_length;
  103         long    path_index;
  104         char    *shlib_name;
  105 };
  106 #endif /* _COFF_H */

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