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20c428fd | 1 | /* alliant.h Alliant machine running system version 2 or 3. |
d8f6d720 | 2 | Copyright (C) 1985, 1986, 1987, 2002 Free Software Foundation, Inc. |
20c428fd JB |
3 | Note that for version 1 of the Alliant system |
4 | you should use alliant1.h instead of this file. | |
5 | Use alliant4.h for version 4. | |
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 | |
17385adc | 11 | the Free Software Foundation; either version 2, or (at your option) |
20c428fd JB |
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 | |
3b7ad313 EN |
21 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
22 | Boston, MA 02111-1307, USA. */ | |
20c428fd | 23 | |
177c0ea7 | 24 | /* The following line tells the configuration script what sort of |
20c428fd JB |
25 | operating system this machine is likely to run. |
26 | USUAL-OPSYS="bsd4-2" */ | |
27 | ||
74d3f806 KH |
28 | /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word |
29 | is the most significant byte. */ | |
30 | ||
31 | #define WORDS_BIG_ENDIAN | |
32 | ||
20c428fd JB |
33 | /* Define NO_ARG_ARRAY if you cannot take the address of the first of a |
34 | * group of arguments and treat it as an array of the arguments. */ | |
35 | ||
36 | #ifdef ALLIANT_1 | |
37 | #define NO_ARG_ARRAY | |
38 | #endif | |
39 | ||
40 | /* Define WORD_MACHINE if addresses and such have | |
41 | * to be corrected before they can be used as byte counts. */ | |
42 | ||
43 | #undef WORD_MACHINE | |
44 | ||
20c428fd JB |
45 | /* Now define a symbol for the cpu type, if your compiler |
46 | does not define it automatically: | |
47 | vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO | |
48 | are the ones defined so far. */ | |
49 | ||
50 | #define ALLIANT | |
51 | ||
52 | /* Use type int rather than a union, to represent Lisp_Object */ | |
53 | /* This is desirable for most machines. */ | |
54 | ||
55 | #define NO_UNION_TYPE | |
56 | ||
57 | /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend | |
58 | the 24-bit bit field into an int. In other words, if bit fields | |
59 | are always unsigned. | |
60 | ||
61 | If you use NO_UNION_TYPE, this flag does not matter. */ | |
62 | /* On Alliants, bitfields are unsigned. */ | |
63 | ||
64 | #define EXPLICIT_SIGN_EXTEND | |
65 | ||
66 | /* No load average information available for Alliants. */ | |
67 | ||
68 | #undef LOAD_AVE_TYPE | |
69 | #undef LOAD_AVE_CVT | |
70 | ||
71 | /* Define CANNOT_DUMP on machines where unexec does not work. | |
72 | Then the function dump-emacs will not be defined | |
73 | and temacs will do (load "loadup") automatically unless told otherwise. */ | |
74 | ||
75 | #undef CANNOT_DUMP | |
76 | ||
77 | /* Define VIRT_ADDR_VARIES if the virtual addresses of | |
78 | pure and impure space as loaded can vary, and even their | |
79 | relative order cannot be relied on. | |
80 | ||
81 | Otherwise Emacs assumes that text space precedes data space, | |
82 | numerically. */ | |
83 | ||
84 | #undef VIRT_ADDR_VARIES | |
85 | ||
20c428fd JB |
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 | /* Actually, Alliant CONCENTRIX does paging "right": | |
91 | data pages are copy-on-write, which means that the pure data areas | |
92 | are shared automatically and remapping is not necessary. */ | |
93 | ||
94 | #define NO_REMAP | |
95 | ||
96 | /* Alliant needs special crt0.o because system version is not reentrant */ | |
97 | ||
98 | #define START_FILES crt0.o | |
99 | ||
100 | /* Alliant dependent code for dumping executing image. | |
101 | See crt0.c code for alliant. */ | |
102 | ||
103 | #define ADJUST_EXEC_HEADER {\ | |
104 | extern int _curbrk, _setbrk;\ | |
105 | _setbrk = _curbrk;\ | |
106 | hdr.a_bss_addr = bss_start;\ | |
107 | unexec_text_start = hdr.a_text_addr;} | |
108 | ||
109 | /* cc screws up on long names. Try making cpp replace them. */ | |
110 | ||
111 | #ifdef ALLIANT_1 | |
112 | #define Finsert_abbrev_table_description Finsert_abbrev_table_descrip | |
113 | #define internal_with_output_to_temp_buffer internal_with_output_to_tem | |
114 | #endif | |
115 | ||
116 | /* "vector" is a typedef in /usr/include/machine/reg.h, so its use as | |
117 | a variable name causes errors when compiling under ANSI C. */ | |
118 | ||
119 | #define vector xxvector |