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comparison src/m/dpx2.h @ 428:3ecd8885ac67 r21-2-22

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Import from CVS: tag r21-2-22
author cvs
date Mon, 13 Aug 2007 11:28:15 +0200
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427:0a0253eac470 428:3ecd8885ac67
1 /* machine description for Bull DPX/2 range
2 Copyright (C) 1985, 1986 Free Software Foundation, Inc.
3
4 This file is part of GNU Emacs.
5
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
10
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with XEmacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
20
21 /* Synched up with: FSF 19.31. */
22
23 /* The following line tells the configuration script what sort of
24 operating system this machine is likely to run.
25 USUAL-OPSYS="usg5-3" */
26
27 /*
28 * You need to either un-comment one of these lines, or copy one
29 * of them to config.h before you include this file.
30 * Note that some simply define a constant and others set a value.
31 */
32
33 /* #define ncl_el /* DPX/2 210,220 etc */
34 /* #define ncl_mr 1 /* DPX/2 320,340 (and 360,380 ?) */
35
36 /* Define WORD_MACHINE if addresses and such have
37 * to be corrected before they can be used as byte counts. */
38
39 /* #define WORD_MACHINE /**/
40
41 /* Now define a symbol for the cpu type, if your compiler
42 does not define it automatically:
43 Ones defined so far include vax, m68000, ns16000, pyramid,
44 orion, tahoe, APOLLO and many others */
45
46 /* /bin/cc on ncl_el and ncl_mr define m68k and mc68000 */
47
48 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
49 the bit field into an int. In other words, if bit fields
50 are always unsigned.
51
52 If you use NO_UNION_TYPE, this flag does not matter. */
53
54 #define EXPLICIT_SIGN_EXTEND
55
56 /* Data type of load average, as read out of kmem. */
57
58 #define LOAD_AVE_TYPE long
59
60 /* Convert that into an integer that is 100 for a load average of 1.0 */
61
62 #define FSCALE 1000.0
63 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
64
65 /* Define CANNOT_DUMP on machines where unexec does not work.
66 Then the function dump-emacs will not be defined
67 and temacs will do (load "loadup") automatically unless told otherwise. */
68
69 /*#define CANNOT_DUMP /**/
70
71 /* Define VIRT_ADDR_VARIES if the virtual addresses of
72 pure and impure space as loaded can vary, and even their
73 relative order cannot be relied on.
74
75 Otherwise Emacs assumes that text space precedes data space,
76 numerically. */
77
78 /* #define VIRT_ADDR_VARIES /**/
79
80 /* Define C_ALLOCA if this machine does not support a true alloca
81 and the one written in C should be used instead.
82 Define HAVE_ALLOCA to say that the system provides a properly
83 working alloca function and it should be used.
84 Define neither one if an assembler-language alloca
85 in the file alloca.s should be used. */
86
87 #define C_ALLOCA
88 /* #define HAVE_ALLOCA /**/
89
90 /* Define NO_REMAP if memory segmentation makes it not work well
91 to change the boundary between the text section and data section
92 when Emacs is dumped. If you define this, the preloaded Lisp
93 code will not be sharable; but that's better than failing completely. */
94
95 #define NO_REMAP
96
97 /*
98 * end of the standard macro's
99 */
100
101 /*
102 * a neat identifier to handle source mods (if needed)
103 */
104 #ifndef DPX2
105 #define DPX2
106 #endif
107
108 /* Disable support for shared libraries in unexec. */
109
110 #undef USG_SHARED_LIBRARIES
111
112 /*
113 * if we use X11, libX11.a has these...
114 */
115 # undef LIB_X11_LIB
116 # define LIB_X11_LIB "-lX11"
117 # undef LIBX11_SYSTEM
118 # define LIBX11_SYSTEM "-lmalloc -lnsl"
119
120 /*
121 * useful if you have INET loaded
122 */
123 # define LIBS_MACHINE "-linet"
124
125
126 #if (defined(ncl_mr) || defined(ncl_el)) && !defined (NBPC)
127 # define NBPC 4096
128 #endif
129
130 /*
131 * if SIGIO is defined, much of the emacs
132 * code assumes we are BSD !!
133 */
134 #ifdef SIGIO
135 #define BROKEN_SIGIO
136 #endif
137
138
139 #ifdef SIGTSTP
140 /*
141 * sysdep.c(sys_suspend) works fine with emacs-18.58
142 * and BOS 02.00.45, if you have an earler version
143 * of Emacs and/or BOS, or have problems, or just prefer
144 * to start a sub-shell rather than suspend-emacs,
145 * un-comment out the next line.
146 */
147 /* # undef SIGTSTP /* make suspend-emacs spawn a sub-shell */
148 #endif
149 /*
150 * no we don't want this at all
151 */
152 #ifdef USG_JOBCTRL
153 # undef USG_JOBCTRL
154 #endif
155
156 /* select also needs this header file--but not in ymakefile. */
157 #ifndef NOT_C_CODE
158 #include <sys/types.h>
159 #include <sys/select.h>
160 #endif
161
162 #define TEXT_START 0
163
164 /*
165 * Define the direction of stack growth.
166 */
167
168 #define STACK_DIRECTION -1
169
170 /* we also have this */
171 #define HAVE_PTYS
172 #define SYSV_PTYS
173
174 /* on bos2.00.45 there is a bug that makes the F_SETOWN fcntl() call
175 enters in an infinite loop. Avoid calling it */
176 #define F_SETOWN_BUG
177
178 /* system closedir sometimes complains about wrong descriptor
179 for no apparent reasons. Use the provided closedir in sysdep.c instead */
180 #ifdef HAVE_CLOSEDIR
181 #undef HAVE_CLOSEDIR
182 #endif
183
184 /* This is to prevent memory clobbering on the DPX/2 200. */
185 #define LD_SWITCH_MACHINE "-N -T32"
186
187 /* end of dpx2.h */
188
189