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1b94449f RS |
1 | /* System description file for MS-DOS |
2 | ||
4b158629 | 3 | Copyright (C) 1993, 1996, 1997, 2001, 2002, 2003, 2004, 2005, 2006, |
49f70d46 | 4 | 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. |
1b94449f RS |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
4b158629 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
1b94449f | 9 | it under the terms of the GNU General Public License as published by |
4b158629 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
1b94449f RS |
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 | |
4b158629 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
1b94449f RS |
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 | ||
1b94449f RS |
29 | #ifndef MSDOS |
30 | #define MSDOS | |
31 | #endif | |
fcc182b3 | 32 | |
920b97ab KS |
33 | #ifdef __GO32__ |
34 | #ifndef __DJGPP__ | |
35 | #define __DJGPP__ 1 /* V2 defines __DJGPP__ == 2 */ | |
920b97ab KS |
36 | #endif |
37 | #else | |
38 | You lose; /* Emacs for DOS must be compiled with DJGPP */ | |
39 | #endif | |
40 | ||
fcc182b3 | 41 | #define DOS_NT /* MSDOS or WINDOWSNT */ |
6df54671 | 42 | #undef BSD_SYSTEM |
1b94449f RS |
43 | |
44 | /* SYSTEM_TYPE should indicate the kind of system you are using. | |
45 | It sets the Lisp variable system-type. */ | |
46 | ||
47 | #define SYSTEM_TYPE "ms-dos" | |
48 | ||
76e5a001 | 49 | #define SYMS_SYSTEM syms_of_dosfns();syms_of_msdos();syms_of_win16select() |
1b94449f RS |
50 | |
51 | /* NOMULTIPLEJOBS should be defined if your system's shell | |
52 | does not have "job control" (the ability to stop a program, | |
53 | run some other program, then continue the first one). */ | |
54 | ||
55 | #define NOMULTIPLEJOBS | |
56 | ||
1b94449f RS |
57 | #define SYSV_SYSTEM_DIR |
58 | ||
59 | /* Define this symbol if your system has the functions bcopy, etc. */ | |
60 | ||
61 | #define BSTRING | |
62 | ||
17b9d003 RS |
63 | /* Define this is the compiler understands `volatile'. */ |
64 | #define HAVE_VOLATILE | |
65 | ||
66 | ||
1b94449f RS |
67 | /* subprocesses should be defined if you want to |
68 | have code for asynchronous subprocesses | |
69 | (as used in M-x compile and M-x shell). | |
77ccee09 | 70 | This is the only system that needs this. */ |
1b94449f RS |
71 | |
72 | #undef subprocesses | |
73 | ||
74 | /* If your system uses COFF (Common Object File Format) then define the | |
75 | preprocessor symbol "COFF". */ | |
76 | ||
77 | #define COFF | |
78 | ||
1b94449f RS |
79 | /* Here, on a separate page, add any special hacks needed |
80 | to make Emacs work on this system. For example, | |
81 | you might define certain system call names that don't | |
82 | exist on your system, or that do different things on | |
83 | your system and must be used only through an encapsulation | |
84 | (Which you should place, by convention, in sysdep.c). */ | |
85 | \f | |
7630a042 RS |
86 | /* Avoid incompatibilities between gmalloc.c and system header files |
87 | in how to declare valloc. */ | |
88 | #define GMALLOC_INHIBIT_VALLOC | |
89 | ||
7b4ded6d EZ |
90 | /* This overrides the default value on editfns.c, since DJGPP |
91 | does not have pw->pw_gecos. */ | |
92 | #define USER_FULL_NAME (getenv ("NAME")) | |
93 | ||
1b94449f RS |
94 | /* setjmp and longjmp can safely replace _setjmp and _longjmp, |
95 | but they will run slower. */ | |
96 | ||
97 | #define _setjmp setjmp | |
98 | #define _longjmp longjmp | |
99 | ||
7a05f3c7 RS |
100 | #if __DJGPP__ < 2 |
101 | ||
7a05f3c7 RS |
102 | /* New chdir () routine. |
103 | DJGPP v2.0 and later doesn't need it because its chdir() does | |
104 | set the drive itself. */ | |
1b94449f RS |
105 | #ifdef chdir |
106 | #undef chdir | |
107 | #endif | |
108 | #define chdir sys_chdir | |
109 | ||
7a05f3c7 RS |
110 | #define LIBS_SYSTEM -lpc /* isn't required in DJGPP v2.0, either */ |
111 | ||
112 | #endif /* __DJGPP__ < 2 */ | |
113 | ||
114 | #if __DJGPP__ > 1 | |
115 | ||
116 | #define DATA_START (&etext + 1) | |
117 | #define TEXT_START &start | |
7a05f3c7 RS |
118 | |
119 | #define _NAIVE_DOS_REGS | |
120 | ||
121 | #else /* not __DJGPP__ > 1 */ | |
1b94449f RS |
122 | |
123 | /* This somehow needs to be defined even though we use COFF. */ | |
124 | #define TEXT_START -1 | |
125 | ||
7a05f3c7 RS |
126 | #endif /* not __DJGPP__ > 1 */ |
127 | ||
1b94449f RS |
128 | #define ORDINARY_LINK |
129 | ||
87485d6f | 130 | /* command.com does not understand `...` so we define this. */ |
1b94449f | 131 | #define LIB_GCC -Lgcc |
1b94449f RS |
132 | #define SEPCHAR ';' |
133 | ||
134 | #define NULL_DEVICE "nul" | |
1b94449f | 135 | |
7a05f3c7 | 136 | #if __DJGPP__ < 2 |
1b94449f RS |
137 | #define O_RDONLY 0x0001 |
138 | #define O_WRONLY 0x0002 | |
139 | #define O_RDWR 0x0004 | |
140 | #define O_CREAT 0x0100 | |
141 | #define O_TRUNC 0x0200 | |
142 | #define O_EXCL 0x0400 | |
143 | #define O_APPEND 0x0800 | |
144 | #define O_TEXT 0x4000 | |
145 | #define O_BINARY 0x8000 | |
7a05f3c7 RS |
146 | #define NO_MATHERR |
147 | #endif | |
1b94449f RS |
148 | |
149 | #define HAVE_INVERSE_HYPERBOLIC | |
150 | #define FLOAT_CHECK_DOMAIN | |
151 | ||
152 | /* When $TERM is "internal" then this is substituted: */ | |
6772c8e1 | 153 | #define INTERNAL_TERMINAL "pc|bios|IBM PC with color display:\ |
89774ec3 | 154 | :co#80:li#25:Co#16:pa#256:km:ms:cm=<CM>:cl=<CL>:ce=<CE>:\ |
38fd211b | 155 | :se=</SO>:so=<SO>:us=<UL>:ue=</UL>:md=<BD>:mh=<DIM>:mb=<BL>:mr=<RV>:me=<NV>:\ |
89774ec3 | 156 | :AB=<BG %d>:AF=<FG %d>:op=<DefC>:" |
1b94449f RS |
157 | |
158 | /* Define this to a function (Fdowncase, Fupcase) if your file system | |
159 | likes that */ | |
2f019854 | 160 | #define FILE_SYSTEM_CASE Fmsdos_downcase_filename |
1b94449f | 161 | |
29675256 RS |
162 | /* Define this to be the separator between devices and paths */ |
163 | #define DEVICE_SEP ':' | |
164 | ||
165 | /* We'll support either convention on MSDOG. */ | |
166 | #define IS_DIRECTORY_SEP(_c_) ((_c_) == '/' || (_c_) == '\\') | |
167 | #define IS_ANY_SEP(_c_) (IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP (_c_)) | |
168 | ||
6b8ac9d2 | 169 | /* Call init_gettimeofday when TZ changes. */ |
7a05f3c7 | 170 | #if __DJGPP__ < 2 |
6b8ac9d2 PE |
171 | #define LOCALTIME_CACHE |
172 | #define tzset init_gettimeofday | |
7a05f3c7 | 173 | #endif |
6b8ac9d2 | 174 | |
a7d40caa KH |
175 | /* bcopy under djgpp is quite safe */ |
176 | #define GAP_USE_BCOPY | |
177 | #define BCOPY_UPWARD_SAFE 1 | |
178 | #define BCOPY_DOWNWARD_SAFE 1 | |
eb246adb | 179 | |
b77c5660 KH |
180 | /* Mode line description of a buffer's type. */ |
181 | #define MODE_LINE_BINARY_TEXT(buf) (NILP(buf->buffer_file_type) ? "T" : "B") | |
182 | ||
7a05f3c7 RS |
183 | /* Do we have POSIX signals? */ |
184 | #if __DJGPP__ > 1 | |
185 | #define POSIX_SIGNALS | |
186 | #endif | |
187 | ||
eb246adb RS |
188 | /* We have (the code to control) a mouse. */ |
189 | #define HAVE_MOUSE | |
87485d6f | 190 | |
61c88d95 RS |
191 | /* We canuse mouse menus. */ |
192 | #define HAVE_MENUS | |
193 | ||
87485d6f MW |
194 | /* Define one of these for easier conditionals. */ |
195 | #ifdef HAVE_X_WINDOWS | |
0405f8d9 EZ |
196 | /* We need a little extra space, see ../../lisp/loadup.el and the |
197 | commentary below, in the non-X branch. The 140KB number was | |
198 | measured on GNU/Linux and on MS-WIndows. */ | |
241c4680 | 199 | #define SYSTEM_PURESIZE_EXTRA (-170000+140000) |
87485d6f MW |
200 | #define LIBX11_SYSTEM -lxext -lsys |
201 | #else | |
0405f8d9 EZ |
202 | /* We need a little extra space, see ../../lisp/loadup.el. |
203 | As of 20091024, DOS-specific files use up 62KB of pure space. But | |
204 | overall, we end up wasting 130KB of pure space, because | |
205 | BASE_PURESIZE starts at 1.47MB, while we need only 1.3MB (including | |
206 | non-DOS specific files and load history; the latter is about 55K, | |
207 | but depends on the depth of the top-level Emacs directory in the | |
208 | directory tree). Given the unknown policy of different DPMI | |
209 | hosts regarding loading of untouched pages, I'm not going to risk | |
210 | enlarging Emacs footprint by another 100+ KBytes. */ | |
241c4680 | 211 | #define SYSTEM_PURESIZE_EXTRA (-170000+65000) |
87485d6f | 212 | #endif |
4b3fd719 | 213 | |
c3d0ee51 | 214 | /* Tell the garbage collector that setjmp is known to save all |
4b3fd719 GM |
215 | registers relevant for conservative garbage collection in the |
216 | jmp_buf. */ | |
217 | ||
218 | #define GC_SETJMP_WORKS 1 | |
2f169c38 | 219 | #define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS |
ab5796a9 MB |
220 | |
221 | /* arch-tag: d184f860-815d-4ff4-8187-d05c0f3c37d0 | |
222 | (do not change this comment) */ |