include/aout/dynix3.h

   1 /* a.out specifics for Sequent Symmetry running Dynix 3.x
   2
   3    Copyright 2001 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software
  17    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  18
  19 #ifndef A_OUT_DYNIX3_H
  20 #define A_OUT_DYNIX3_H
  21
  22 #define external_exec dynix_external_exec
  23
  24 /* struct exec for Dynix 3
  25
  26    a_gdtbl and a_bootstrap are only for standalone binaries.
  27    Shared data fields are not supported by the kernel as of Dynix 3.1,
  28    but are supported by Dynix compiler programs.  */
  29 struct dynix_external_exec
  30   {
  31     unsigned char e_info[4];
  32     unsigned char e_text[4];
  33     unsigned char e_data[4];
  34     unsigned char e_bss[4];
  35     unsigned char e_syms[4];
  36     unsigned char e_entry[4];
  37     unsigned char e_trsize[4];
  38     unsigned char e_drsize[4];
  39     unsigned char e_g_code[8];
  40     unsigned char e_g_data[8];
  41     unsigned char e_g_desc[8];
  42     unsigned char e_shdata[4];
  43     unsigned char e_shbss[4];
  44     unsigned char e_shdrsize[4];
  45     unsigned char e_bootstrap[44];
  46     unsigned char e_reserved[12];
  47     unsigned char e_version[4];
  48   };
  49
  50 #define EXEC_BYTES_SIZE (128)
  51
  52 /* All executables under Dynix are demand paged with read-only text,
  53    Thus no NMAGIC.
  54
  55    ZMAGIC has a page of 0s at virtual 0,
  56    XMAGIC has an invalid page at virtual 0.  */
  57 #define OMAGIC  0x12eb          /* .o */
  58 #define ZMAGIC  0x22eb          /* zero @ 0, demand load */
  59 #define XMAGIC  0x32eb          /* invalid @ 0, demand load */
  60 #define SMAGIC  0x42eb          /* standalone, not supported here */
  61
  62 #define N_BADMAG(x) ((OMAGIC != N_MAGIC(x)) && \
  63                      (ZMAGIC != N_MAGIC(x)) && \
  64                      (XMAGIC != N_MAGIC(x)) && \
  65                      (SMAGIC != N_MAGIC(x)))
  66
  67 #define N_ADDRADJ(x) ((ZMAGIC == N_MAGIC(x) || XMAGIC == N_MAGIC(x)) ? 0x1000 : 0)
  68
  69 #define N_TXTOFF(x) (EXEC_BYTES_SIZE)
  70 #define N_DATOFF(x) (N_TXTOFF(x) + N_TXTSIZE(x))
  71 #define N_SHDATOFF(x) (N_DATOFF(x) + (x).a_data)
  72 #define N_TRELOFF(x) (N_SHDATOFF(x) + (x).a_shdata)
  73 #define N_DRELOFF(x) (N_TRELOFF(x) + (x).a_trsize)
  74 #define N_SHDRELOFF(x) (N_DRELOFF(x) + (x).a_drsize)
  75 #define N_SYMOFF(x) (N_SHDRELOFF(x) + (x).a_shdrsize)
  76 #define N_STROFF(x) (N_SYMOFF(x) + (x).a_syms)
  77
  78 #define N_TXTADDR(x) \
  79         (((OMAGIC == N_MAGIC(x)) || (SMAGIC == N_MAGIC(x))) ? 0 \
  80          : TEXT_START_ADDR + EXEC_BYTES_SIZE)
  81
  82 #define N_TXTSIZE(x) \
  83         (((OMAGIC == N_MAGIC(x)) || (SMAGIC == N_MAGIC(x))) ? ((x).a_text) \
  84          : ((x).a_text - N_ADDRADJ(x) - EXEC_BYTES_SIZE))
  85
  86 #endif /* A_OUT_DYNIX3_H */