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code.delx.au - gnu-emacs/blob - src/m/celerity.h
1 /* machine description file for Celerity.
2 Copyright (C) 1985, 1986 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
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 1, or (at your option)
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.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* The following line tells the configuration script what sort of
22 operating system this machine is likely to run.
23 USUAL-OPSYS="bsd4-2" */
25 /* The following three symbols give information on
26 the size of various data types. */
28 #define SHORTBITS 16 /* Number of bits in a short */
30 #define INTBITS 32 /* Number of bits in an int */
32 #define LONGBITS 32 /* Number of bits in a long */
34 /* Define BIG_ENDIAN iff lowest-numbered byte in a word
35 is the most significant byte. */
39 /* XINT must explicitly sign extend */
41 #define EXPLICIT_SIGN_EXTEND
43 /* celerity preprocessor defines "accel", however the following is clearer */
46 /* #define NO_UNION_TYPE would be preferable,
47 but it does not work, and the reason is not yet known. */
51 /* Data type of load average, as read out of kmem. */
53 #define LOAD_AVE_TYPE double
55 /* Convert that into an integer that is 100 for a load average of 1.0 */
57 #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
59 /* A machine-specific loader switch is needed. */
61 #define LD_SWITCH_MACHINE -k100000
63 /* alloca is provided by the system. */
67 /* (short) negative-int doesn't sign-extend correctly */
68 #define SHORT_CAST_BUG