src/base/loader/exec_ecoff.h

   1 /*
   2  * Taken from NetBSD sys/exec_ecoff.h
   3  */
   4
   5 /*      $NetBSD: exec_ecoff.h,v 1.13 2003/01/18 09:53:18 thorpej Exp $  */
   6
   7 /*
   8  * Copyright (c) 1994 Adam Glass
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. All advertising materials mentioning features or use of this software
  20  *    must display the following acknowledgement:
  21  *      This product includes software developed by Adam Glass.
  22  * 4. The name of the author may not be used to endorse or promote products
  23  *    derived from this software without specific prior written permission
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  26  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  27  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  28  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  29  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  30  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  31  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  32  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  33  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  34  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  35  */
  36
  37 #ifndef _SYS_EXEC_ECOFF_H_
  38 #define _SYS_EXEC_ECOFF_H_
  39
  40 //Only alpha will be able to load ecoff files for now
  41 #include "arch/alpha/ecoff_machdep.h"
  42
  43 struct ecoff_filehdr {
  44         coff_ushort f_magic;    /* magic number */
  45         coff_ushort f_nscns;    /* # of sections */
  46         coff_uint   f_timdat;   /* time and date stamp */
  47         coff_ulong  f_symptr;   /* file offset of symbol table */
  48         coff_uint   f_nsyms;    /* # of symbol table entries */
  49         coff_ushort f_opthdr;   /* sizeof the optional header */
  50         coff_ushort f_flags;    /* flags??? */
  51 };
  52
  53 struct ecoff_aouthdr {
  54         coff_ushort magic;
  55         coff_ushort vstamp;
  56         ECOFF_PAD
  57         coff_ulong  tsize;
  58         coff_ulong  dsize;
  59         coff_ulong  bsize;
  60         coff_ulong  entry;
  61         coff_ulong  text_start;
  62         coff_ulong  data_start;
  63         coff_ulong  bss_start;
  64         ECOFF_MACHDEP;
  65 };
  66
  67 struct ecoff_scnhdr {           /* needed for size info */
  68         char    s_name[8];      /* name */
  69         coff_ulong  s_paddr;    /* physical addr? for ROMing?*/
  70         coff_ulong  s_vaddr;    /* virtual addr? */
  71         coff_ulong  s_size;             /* size */
  72         coff_ulong  s_scnptr;   /* file offset of raw data */
  73         coff_ulong  s_relptr;   /* file offset of reloc data */
  74         coff_ulong  s_lnnoptr;  /* file offset of line data */
  75         coff_ushort s_nreloc;   /* # of relocation entries */
  76         coff_ushort s_nlnno;    /* # of line entries */
  77         coff_uint   s_flags;    /* flags */
  78 };
  79
  80 struct ecoff_exechdr {
  81         struct ecoff_filehdr f;
  82         struct ecoff_aouthdr a;
  83 };
  84
  85 #define ECOFF_HDR_SIZE (sizeof(struct ecoff_exechdr))
  86
  87 #define ECOFF_OMAGIC 0407
  88 #define ECOFF_NMAGIC 0410
  89 #define ECOFF_ZMAGIC 0413
  90
  91 #define ECOFF_ROUND(value, by) \
  92         (((value) + (by) - 1) & ~((by) - 1))
  93
  94 #define ECOFF_BLOCK_ALIGN(ep, value) \
  95         ((ep)->a.magic == ECOFF_ZMAGIC ? ECOFF_ROUND((value), ECOFF_LDPGSZ) : \
  96          (value))
  97
  98 #define ECOFF_TXTOFF(ep) \
  99         ((ep)->a.magic == ECOFF_ZMAGIC ? 0 : \
 100          ECOFF_ROUND(ECOFF_HDR_SIZE + (ep)->f.f_nscns * \
 101                      sizeof(struct ecoff_scnhdr), ECOFF_SEGMENT_ALIGNMENT(ep)))
 102
 103 #define ECOFF_DATOFF(ep) \
 104         (ECOFF_BLOCK_ALIGN((ep), ECOFF_TXTOFF(ep) + (ep)->a.tsize))
 105
 106 #define ECOFF_SEGMENT_ALIGN(ep, value) \
 107         (ECOFF_ROUND((value), ((ep)->a.magic == ECOFF_ZMAGIC ? ECOFF_LDPGSZ : \
 108          ECOFF_SEGMENT_ALIGNMENT(ep))))
 109
 110 #endif /* !_SYS_EXEC_ECOFF_H_ */