1 /* machine description file for vax.
2 Copyright (C) 1985, 1986 Free Software Foundation, Inc.
4 This file is part of SXEmacs
6 SXEmacs 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 3 of the License, or
9 (at your option) any later version.
11 SXEmacs 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.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* Synched up with: FSF 19.31. */
22 /* The following line tells the configuration script what sort of
23 operating system this machine is likely to run.
27 The vax (-machine=vax) runs zillions of different operating systems.
29 Vax running Berkeley Unix (-opsystem=bsd4-1, -opsystem=bsd4-2 or
34 Vax running Ultrix (-opsystem=bsd4-2)
36 Works. See under Ultrix in share-lib/MACHINES for problems using X
39 Vax running System V rel 2 (-opsystem=usg5-2)
43 Vax running System V rel 0 (-opsystem=usg5-0)
47 Vax running VMS (-opsystem=vms)
49 18.36 believed to work. Addition of features is necessary to make
50 this Emacs version more usable.
54 /* #define vax -- appears to be done automatically */
56 /* crt0.c should use the vax-bsd style of entry, with no dummy args. */
60 /* crt0.c should define a symbol `start' and do .globl with a dot. */
62 #define DOT_GLOBAL_START
65 /* USG systems I know of running on Vaxes do not actually
66 support the load average, so disable it for them. */
68 /* Data type of load average, as read out of kmem. */
70 #define LOAD_AVE_TYPE double
72 /* Convert that into an integer that is 100 for a load average of 1.0 */
74 #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
78 /* Vax sysV has alloca in the PW library. */
81 #define LIB_STANDARD "-lPW -lc"
86 /* There is some bug in unexec in for usg 5.2 on a vax
87 which nobody who runs such a system has yet tracked down. */