1 /* machine description file for ISI 68000's
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 2, 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 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. */
21 /* Synched up with: FSF 19.31. */
23 /* The following line tells the configuration script what sort of
24 operating system this machine is likely to run.
28 Use `-opsystem=bsd4-2' or `-opsystem=bsd4-3'.
33 /* Say this machine is a 68000 */
37 /* Data type of load average, as read out of kmem. */
40 #define LOAD_AVE_TYPE long
42 #define LOAD_AVE_TYPE double
45 /* Convert that into an integer that is 100 for a load average of 1.0 */
48 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
50 #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
53 /* Mask for address bits within a memory segment */
55 #define SEGMENT_MASK 0x1ffff
57 /* use the -20 switch to get the 68020 code */
58 /* #define C_SWITCH_MACHINE -20 */
60 /* Use the version of the library for the 68020
61 because the standard library requires some special hacks in crt0
62 which the GNU crt0 does not have. */
64 #define LIB_STANDARD "-lmc"
66 /* macros to make unexec work right */
68 #define A_TEXT_OFFSET(HDR) sizeof(HDR)
69 #define A_TEXT_SEEK(HDR) sizeof(HDR)
71 /* A few changes for the newer systems. */
75 /* The following line affects crt0.c. */
79 #define LIB_STANDARD "-lmc -lc"
80 #define C_DEBUG_SWITCH "-20 -O -X23"