1/* Machine-dependent configuration for GNU Emacs for AT&T 3b machines.
2   Copyright (C) 1986, 2001, 2002, 2003, 2004, 2005,
3                 2006, 2007  Free Software Foundation, Inc.
4
5   Modified by David Robinson (daver@csvax.caltech.edu) 6/6/86
6
7This file is part of GNU Emacs.
8
9GNU Emacs is free software; you can redistribute it and/or modify
10it under the terms of the GNU General Public License as published by
11the Free Software Foundation; either version 2, or (at your option)
12any later version.
13
14GNU Emacs is distributed in the hope that it will be useful,
15but WITHOUT ANY WARRANTY; without even the implied warranty of
16MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17GNU General Public License for more details.
18
19You should have received a copy of the GNU General Public License
20along with GNU Emacs; see the file COPYING.  If not, write to
21the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
22Boston, MA 02110-1301, USA.  */
23
24
25/* The following line tells the configuration script what sort of
26   operating system this machine is likely to run.
27   USUAL-OPSYS="usg5-2-2"  */
28
29/* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
30   is the most significant byte.  */
31
32#define WORDS_BIG_ENDIAN
33
34/* Define NO_ARG_ARRAY if you cannot take the address of the first of a
35 * group of arguments and treat it as an array of the arguments.  */
36
37/* #define NO_ARG_ARRAY */
38
39/* Define WORD_MACHINE if addresses and such have
40 * to be corrected before they can be used as byte counts.  */
41
42/* #define WORD_MACHINE */
43
44/* Now define a symbol for the cpu type, if your compiler
45   does not define it automatically */
46#define ATT3B
47
48/* Use type int rather than a union, to represent Lisp_Object */
49/* This is desirable for most machines.  */
50
51#define NO_UNION_TYPE
52
53/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
54   the bit field into an int.  In other words, if bit fields
55   are always unsigned.
56
57   If you use NO_UNION_TYPE, this flag does not matter.  */
58
59#define EXPLICIT_SIGN_EXTEND
60
61/* Data type of load average, as read out of kmem.  */
62/* #define LOAD_AVE_TYPE long */
63
64/* Convert that into an integer that is 100 for a load average of 1.0  */
65
66/* #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE) */
67
68/* Define CANNOT_DUMP on machines where unexec does not work.
69   Then the function dump-emacs will not be defined
70   and temacs will do (load "loadup") automatically unless told otherwise.  */
71/* #define CANNOT_DUMP */
72
73/* Define VIRT_ADDR_VARIES if the virtual addresses of
74   pure and impure space as loaded can vary, and even their
75   relative order cannot be relied on.
76
77   Otherwise Emacs assumes that text space precedes data space,
78   numerically.  */
79
80/* #define VIRT_ADDR_VARIES */  /* Karl Kleinpaste says this isn't needed.  */
81
82/* SysV has alloca in the PW library */
83
84#define LIB_STANDARD -lPW -lc
85
86/* Define NO_REMAP if memory segmentation makes it not work well
87   to change the boundary between the text section and data section
88   when Emacs is dumped.  If you define this, the preloaded Lisp
89   code will not be sharable; but that's better than failing completely.  */
90
91#define NO_REMAP
92
93/* #define LD_SWITCH_MACHINE -N */
94
95/* Use Terminfo, not Termcap.  */
96
97#define TERMINFO
98
99/* -O has been observed to make correct C code in Emacs not work.
100   So don't try to use it.  */
101
102#if u3b2 || u3b5 || u3b15
103#define C_OPTIMIZE_SWITCH
104#endif
105
106/* Define our page size.  */
107
108#define NBPC 2048
109
110#if 0 /* If this is still needed, don't hard-code assumptions about
111	 the number of VALBITS, or other assumptions about the
112	 Lisp_Object representation.  Try to extend lisp.h instead, if
113	 necessary.  */
114/* The usual definition of XINT, which involves shifting, does not
115   sign-extend properly on this machine.  */
116
117#define XINT(i) (((sign_extend_temp=(i)) & 0x00800000) \
118		 ? (sign_extend_temp | 0xFF000000) \
119		 : (sign_extend_temp & 0x00FFFFFF))
120#endif
121
122#ifdef emacs /* Don't do this when making xmakefile! */
123extern int sign_extend_temp;
124#endif
125
126#if u3b2 || u3b5 || u3b15
127/* On 3b2/5/15, data space has high order bit on. */
128#define DATA_SEG_BITS 0x80000000
129#endif /* 3b2, 3b5 or 3b15 */
130
131#define TEXT_START 0
132
133/* (short) negative-int doesn't sign-extend correctly */
134#define SHORT_CAST_BUG
135
136/* 3B2s with WIN/3B have winsize defined in ptem.h */
137#if u3b2
138#define NEED_PTEM_H
139#endif /* u3b2 */
140
141/* 3b2 does not have memmove, I'm told.  */
142/* It is safe to have no parens around the args in the safe_bcopy call,
143   and parens would screw up the prototype decl for memmove.  */
144#define	memmove(d, s, n) safe_bcopy (s, d, n)
145
146/* This affects filemode.c.  */
147#define NO_MODE_T
148
149/* arch-tag: 07441a37-d630-447f-94fa-7da19645c97a
150   (do not change this comment) */
151