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30fe07a6 | 1 | /* Machine-dependent configuration for GNU Emacs for AT&T 3b machines. |
429ab54e GM |
2 | Copyright (C) 1986, 2001, 2002, 2003, 2004, 2005, |
3 | 2006, 2007 Free Software Foundation, Inc. | |
30fe07a6 JB |
4 | |
5 | Modified by David Robinson (daver@csvax.caltech.edu) 6/6/86 | |
6 | ||
7 | This file is part of GNU Emacs. | |
8 | ||
9 | GNU Emacs is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
4a9f99bd | 11 | the Free Software Foundation; either version 3, or (at your option) |
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12 | any later version. |
13 | ||
14 | GNU Emacs is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GNU Emacs; see the file COPYING. If not, write to | |
364c38d3 LK |
21 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
22 | Boston, MA 02110-1301, USA. */ | |
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23 | |
24 | ||
177c0ea7 | 25 | /* The following line tells the configuration script what sort of |
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26 | operating system this machine is likely to run. |
27 | USUAL-OPSYS="usg5-2-2" */ | |
28 | ||
74d3f806 KH |
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 | ||
30fe07a6 JB |
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 | ||
30fe07a6 JB |
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 | |
9b8e8201 | 54 | the bit field into an int. In other words, if bit fields |
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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 | ||
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82 | /* SysV has alloca in the PW library */ |
83 | ||
84 | #define LIB_STANDARD -lPW -lc | |
30fe07a6 JB |
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 | ||
d9c5f5ed KR |
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. */ | |
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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)) | |
d9c5f5ed | 120 | #endif |
30fe07a6 | 121 | |
eb8c3be9 | 122 | #ifdef emacs /* Don't do this when making xmakefile! */ |
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123 | extern int sign_extend_temp; |
124 | #endif | |
125 | ||
126 | #if u3b2 || u3b5 || u3b15 | |
30fe07a6 | 127 | /* On 3b2/5/15, data space has high order bit on. */ |
d9c5f5ed | 128 | #define DATA_SEG_BITS 0x80000000 |
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129 | #endif /* 3b2, 3b5 or 3b15 */ |
130 | ||
131 | #define TEXT_START 0 | |
132 | ||
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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 */ | |
b6e1c607 RS |
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) | |
c901003d RS |
145 | |
146 | /* This affects filemode.c. */ | |
147 | #define NO_MODE_T | |
ab5796a9 MB |
148 | |
149 | /* arch-tag: 07441a37-d630-447f-94fa-7da19645c97a | |
150 | (do not change this comment) */ |