1 /* machine description file for tek4300.
2 Copyright (C) 1988 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 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="bsd4-3" */
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 /* 68000 has lowest-numbered byte as most significant */
36 /* This value matches the value the system gives it. */
37 #define BIG_ENDIAN 4321
39 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
40 * group of arguments and treat it as an array of the arguments. */
44 /* Define WORD_MACHINE if addresses and such have
45 * to be corrected before they can be used as byte counts. */
49 /* Now define a symbol for the cpu type, if your compiler
50 does not define it automatically. */
54 /* Use type int rather than a union, to represent Lisp_Object */
58 /* Data type of load average, as read out of kmem. */
60 #define LOAD_AVE_TYPE long
62 /* Convert that into an integer that is 100 for a load average of 1.0 */
64 #define LOAD_AVE_CVT(x) (x)
66 /* Define NO_REMAP if memory segmentation makes it not work well
67 to change the boundary between the text section and data section
68 when Emacs is dumped. If you define this, the preloaded Lisp
69 code will not be sharable; but that's better than failing completely. */
73 /* Define C_ALLOCA if this machine does not support a true alloca
74 and the one written in C should be used instead. */
78 /* setjmp and longjmp can safely replace _setjmp and _longjmp, */
80 #define _longjmp longjmp
81 #define _setjmp setjmp
83 /* The text segment always starts at a fixed address.
84 This way we don't need to have a label _start defined. */
88 /* The Tektronix exec struct for ZMAGIC files is struct zexec */
90 #define EXEC_HDR_TYPE struct zexec
92 /* The entry-point label (start of text segment) is `start', not `__start'. */
94 #define DEFAULT_ENTRY_ADDRESS start
96 /* Use the system's malloc calls, gmalloc.c won't work for us. */
100 /* In building xmakefile, "cc -E -g" forcibly reads from stdin. Since we
101 can't remove the CFLAGS from that "cc -E" invocation, make sure we
102 never pass -g. If you want to debug, remove the following, and fix
103 src/Makefile.in so it doesn't pass ${CFLAGS} when creating xmakefile. */
105 #define C_DEBUG_SWITCH
107 /* eirik@elf.ithaca.ny.us said this was needed in 19.22. */