code.delx.au - gnu-emacs/blob - src/s/msdos.h

   1 /* System description file for MS-DOS
   2
   3 Copyright (C) 1993, 1996, 1997, 2001, 2002, 2003, 2004, 2005, 2006,
   4   2007, 2008, 2009, 2010  Free Software Foundation, Inc.
   5
   6 This file is part of GNU Emacs.
   7
   8 GNU Emacs is free software: you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation, either version 3 of the License, or
  11 (at your option) any later version.
  12
  13 GNU Emacs is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 /* Note: lots of stuff here was taken from s-msdos.h in demacs. */
  22
  23
  24 /*
  25  *      Define symbols to identify the version of Unix this is.
  26  *      Define all the symbols that apply correctly.
  27  */
  28
  29 #ifndef MSDOS
  30 #define MSDOS
  31 #endif
  32
  33 #ifndef __DJGPP__
  34 You lose; /* Emacs for DOS must be compiled with DJGPP */
  35 #endif
  36
  37 #define DOS_NT  /* MSDOS or WINDOWSNT */
  38 #undef BSD_SYSTEM
  39
  40 /* SYSTEM_TYPE should indicate the kind of system you are using.
  41  It sets the Lisp variable system-type.  */
  42
  43 #define SYSTEM_TYPE "ms-dos"
  44
  45 #define SYMS_SYSTEM syms_of_dosfns();syms_of_msdos();syms_of_win16select()
  46
  47 #define SYSV_SYSTEM_DIR
  48
  49 /* Define this symbol if your system has the functions bcopy, etc. */
  50
  51 #define BSTRING
  52
  53 /* Define this is the compiler understands `volatile'.  */
  54 #define HAVE_VOLATILE
  55
  56
  57 /* subprocesses should be defined if you want to
  58    have code for asynchronous subprocesses
  59    (as used in M-x compile and M-x shell).
  60    This is the only system that needs this.  */
  61
  62 #undef subprocesses
  63
  64 /* If your system uses COFF (Common Object File Format) then define the
  65    preprocessor symbol "COFF". */
  66
  67 #define COFF
  68
  69 /* Here, on a separate page, add any special hacks needed
  70    to make Emacs work on this system.  For example,
  71    you might define certain system call names that don't
  72    exist on your system, or that do different things on
  73    your system and must be used only through an encapsulation
  74    (Which you should place, by convention, in sysdep.c).  */
  75 \f
  76 /* Avoid incompatibilities between gmalloc.c and system header files
  77    in how to declare valloc.  */
  78 #define GMALLOC_INHIBIT_VALLOC
  79
  80 /* This overrides the default value on editfns.c, since DJGPP
  81    does not have pw->pw_gecos.  */
  82 #define USER_FULL_NAME (getenv ("NAME"))
  83
  84 /* setjmp and longjmp can safely replace _setjmp and _longjmp,
  85    but they will run slower.  */
  86
  87 #define _setjmp setjmp
  88 #define _longjmp longjmp
  89
  90 #define DATA_START  (&etext + 1)
  91 #define TEXT_START  &start
  92
  93 #define _NAIVE_DOS_REGS
  94
  95 #define ORDINARY_LINK
  96
  97 /* command.com does not understand `...` so we define this.  */
  98 #define SEPCHAR ';'
  99
 100 #define NULL_DEVICE "nul"
 101
 102 #define HAVE_INVERSE_HYPERBOLIC
 103 #define FLOAT_CHECK_DOMAIN
 104
 105 /* When $TERM is "internal" then this is substituted:  */
 106 #define INTERNAL_TERMINAL "pc|bios|IBM PC with color display:\
 107 :co#80:li#25:Co#16:pa#256:km:ms:cm=<CM>:cl=<CL>:ce=<CE>:\
 108 :se=</SO>:so=<SO>:us=<UL>:ue=</UL>:md=<BD>:mh=<DIM>:mb=<BL>:mr=<RV>:me=<NV>:\
 109 :AB=<BG %d>:AF=<FG %d>:op=<DefC>:"
 110
 111 /* Define this to a function (Fdowncase, Fupcase) if your file system
 112    likes that */
 113 #define FILE_SYSTEM_CASE Fmsdos_downcase_filename
 114
 115 /* Define this to be the separator between devices and paths */
 116 #define DEVICE_SEP ':'
 117
 118 /* We'll support either convention on MSDOG.  */
 119 #define IS_DIRECTORY_SEP(_c_) ((_c_) == '/' || (_c_) == '\\')
 120 #define IS_ANY_SEP(_c_) (IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP (_c_))
 121
 122 /* bcopy under djgpp is quite safe */
 123 #define GAP_USE_BCOPY
 124 #define BCOPY_UPWARD_SAFE 1
 125 #define BCOPY_DOWNWARD_SAFE 1
 126
 127 /* Mode line description of a buffer's type.  */
 128 #define MODE_LINE_BINARY_TEXT(buf) (NILP(buf->buffer_file_type) ? "T" : "B")
 129
 130 /* We have (the code to control) a mouse.  */
 131 #define HAVE_MOUSE
 132
 133 /* We can use mouse menus.  */
 134 #define HAVE_MENUS
 135
 136 /* Define one of these for easier conditionals.  */
 137 #ifdef HAVE_X_WINDOWS
 138 /* We need a little extra space, see ../../lisp/loadup.el and the
 139    commentary below, in the non-X branch.  The 140KB number was
 140    measured on GNU/Linux and on MS-WIndows.  */
 141 #define SYSTEM_PURESIZE_EXTRA (-170000+140000)
 142 #else
 143 /* We need a little extra space, see ../../lisp/loadup.el.
 144    As of 20091024, DOS-specific files use up 62KB of pure space.  But
 145    overall, we end up wasting 130KB of pure space, because
 146    BASE_PURESIZE starts at 1.47MB, while we need only 1.3MB (including
 147    non-DOS specific files and load history; the latter is about 55K,
 148    but depends on the depth of the top-level Emacs directory in the
 149    directory tree).  Given the unknown policy of different DPMI
 150    hosts regarding loading of untouched pages, I'm not going to risk
 151    enlarging Emacs footprint by another 100+ KBytes.  */
 152 #define SYSTEM_PURESIZE_EXTRA (-170000+65000)
 153 #endif
 154
 155 /* Tell the garbage collector that setjmp is known to save all
 156    registers relevant for conservative garbage collection in the
 157    jmp_buf.  */
 158
 159 #define GC_SETJMP_WORKS 1
 160 #define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS
 161
 162 #define NO_REMAP
 163
 164 /* arch-tag: d184f860-815d-4ff4-8187-d05c0f3c37d0
 165    (do not change this comment) */