include/coff/i386.h

   1 /* coff information for Intel 386/486.
   2
   3    Copyright (C) 2001-2021 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 3 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,
  18    MA 02110-1301, USA.  */
  19
  20 #define L_LNNO_SIZE 2
  21 #define INCLUDE_COMDAT_FIELDS_IN_AUXENT
  22 #include "coff/external.h"
  23
  24 #define COFF_PAGE_SIZE  0x1000
  25
  26 /* Bits for f_flags:
  27         F_RELFLG        Relocation info stripped from file
  28         F_EXEC          File is executable (no unresolved external references)
  29         F_LNNO          Line numbers stripped from file
  30         F_LSYMS         Local symbols stripped from file
  31         F_AR32WR        File has byte ordering of an AR32WR machine (e.g. vax).  */
  32
  33 #define F_RELFLG        (0x0001)
  34 #define F_EXEC          (0x0002)
  35 #define F_LNNO          (0x0004)
  36 #define F_LSYMS         (0x0008)
  37
  38 #define I386MAGIC       0x14c
  39 #define I386PTXMAGIC    0x154
  40 #define I386AIXMAGIC    0x175
  41
  42 /* This is Lynx's all-platform magic number for executables.  */
  43
  44 #define LYNXCOFFMAGIC   0415
  45
  46 /* .NET DLLs XOR the Machine number (above) with an override to
  47     indicate that the DLL contains OS-specific machine code rather
  48     than just IL or bytecode. See
  49     https://github.com/dotnet/coreclr/blob/6f7aa7967c607b8c667518314ab937c0d7547025/src/inc/pedecoder.h#L94-L107. */
  50 #define IMAGE_FILE_MACHINE_NATIVE_APPLE_OVERRIDE   0x4644
  51 #define IMAGE_FILE_MACHINE_NATIVE_FREEBSD_OVERRIDE 0xadc4
  52 #define IMAGE_FILE_MACHINE_NATIVE_LINUX_OVERRIDE   0x7b79
  53 #define IMAGE_FILE_MACHINE_NATIVE_NETBSD_OVERRIDE  0x1993
  54
  55 /* Used in some .NET DLLs that target a specific OS.  */
  56 #define I386_APPLE_MAGIC   (I386MAGIC ^ IMAGE_FILE_MACHINE_NATIVE_APPLE_OVERRIDE)
  57 #define I386_FREEBSD_MAGIC (I386MAGIC ^ IMAGE_FILE_MACHINE_NATIVE_FREEBSD_OVERRIDE)
  58 #define I386_LINUX_MAGIC   (I386MAGIC ^ IMAGE_FILE_MACHINE_NATIVE_LINUX_OVERRIDE)
  59 #define I386_NETBSD_MAGIC  (I386MAGIC ^ IMAGE_FILE_MACHINE_NATIVE_NETBSD_OVERRIDE)
  60
  61 #define I386BADMAG(x) (  ((x).f_magic != I386MAGIC) \
  62                        && (x).f_magic != I386_APPLE_MAGIC \
  63                        && (x).f_magic != I386_FREEBSD_MAGIC \
  64                        && (x).f_magic != I386_LINUX_MAGIC \
  65                        && (x).f_magic != I386_NETBSD_MAGIC \
  66                        && (x).f_magic != I386AIXMAGIC \
  67                        && (x).f_magic != I386PTXMAGIC \
  68                        && (x).f_magic != LYNXCOFFMAGIC)
  69
  70 #define OMAGIC          0404    /* Object files, eg as output.  */
  71 #define ZMAGIC          0413    /* Demand load format, eg normal ld output.  */
  72 #define STMAGIC         0401    /* Target shlib.  */
  73 #define SHMAGIC         0443    /* Host shlib.  */
  74
  75 /* Define some NT default values.  */
  76 /*  #define NT_IMAGE_BASE        0x400000 moved to internal.h */
  77 #define NT_SECTION_ALIGNMENT 0x1000
  78 #define NT_FILE_ALIGNMENT    0x200
  79 #define NT_DEF_RESERVE       0x100000
  80 #define NT_DEF_COMMIT        0x1000
  81
  82 /* Relocation directives.  */
  83
  84 struct external_reloc
  85 {
  86   char r_vaddr[4];
  87   char r_symndx[4];
  88   char r_type[2];
  89 };
  90
  91 #define RELOC struct external_reloc
  92 #define RELSZ 10
  93