1/* alliant.h  Alliant machine running system version 2 or 3.
2   Copyright (C) 1985, 1986, 1987, 2001, 2002, 2003, 2004,
3                 2005, 2006, 2007  Free Software Foundation, Inc.
4   Note that for version 1 of the Alliant system
5   you should use alliant1.h instead of this file.
6   Use alliant4.h for version 4.
7
8This file is part of GNU Emacs.
9
10GNU Emacs is free software; you can redistribute it and/or modify
11it under the terms of the GNU General Public License as published by
12the Free Software Foundation; either version 2, or (at your option)
13any later version.
14
15GNU Emacs is distributed in the hope that it will be useful,
16but WITHOUT ANY WARRANTY; without even the implied warranty of
17MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18GNU General Public License for more details.
19
20You should have received a copy of the GNU General Public License
21along with GNU Emacs; see the file COPYING.  If not, write to
22the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
23Boston, MA 02110-1301, USA.  */
24
25/* The following line tells the configuration script what sort of
26   operating system this machine is likely to run.
27   USUAL-OPSYS="bsd4-2"  */
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#ifdef ALLIANT_1
38#define NO_ARG_ARRAY
39#endif
40
41/* Define WORD_MACHINE if addresses and such have
42 * to be corrected before they can be used as byte counts.  */
43
44#undef WORD_MACHINE
45
46/* Now define a symbol for the cpu type, if your compiler
47   does not define it automatically:
48   vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
49   are the ones defined so far.  */
50
51#define ALLIANT
52
53/* Use type int rather than a union, to represent Lisp_Object */
54/* This is desirable for most machines.  */
55
56#define NO_UNION_TYPE
57
58/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
59   the 24-bit bit field into an int.  In other words, if bit fields
60   are always unsigned.
61
62   If you use NO_UNION_TYPE, this flag does not matter.  */
63/* On Alliants, bitfields are unsigned. */
64
65#define EXPLICIT_SIGN_EXTEND
66
67/* No load average information available for Alliants. */
68
69#undef LOAD_AVE_TYPE
70#undef LOAD_AVE_CVT
71
72/* Define CANNOT_DUMP on machines where unexec does not work.
73   Then the function dump-emacs will not be defined
74   and temacs will do (load "loadup") automatically unless told otherwise.  */
75
76#undef CANNOT_DUMP
77
78/* Define VIRT_ADDR_VARIES if the virtual addresses of
79   pure and impure space as loaded can vary, and even their
80   relative order cannot be relied on.
81
82   Otherwise Emacs assumes that text space precedes data space,
83   numerically.  */
84
85#undef VIRT_ADDR_VARIES
86
87/* Define NO_REMAP if memory segmentation makes it not work well
88   to change the boundary between the text section and data section
89   when Emacs is dumped.  If you define this, the preloaded Lisp
90   code will not be sharable; but that's better than failing completely.  */
91/* Actually, Alliant CONCENTRIX does paging "right":
92   data pages are copy-on-write, which means that the pure data areas
93   are shared automatically and remapping is not necessary.  */
94
95#define NO_REMAP
96
97/* Alliant needs special crt0.o because system version is not reentrant */
98
99#define START_FILES crt0.o
100
101/* Alliant dependent code for dumping executing image.
102   See crt0.c code for alliant.  */
103
104#define ADJUST_EXEC_HEADER {\
105extern int _curbrk, _setbrk;\
106_setbrk = _curbrk;\
107hdr.a_bss_addr = bss_start;\
108unexec_text_start = hdr.a_text_addr;}
109
110/* cc screws up on long names.  Try making cpp replace them.  */
111
112#ifdef ALLIANT_1
113#define Finsert_abbrev_table_description Finsert_abbrev_table_descrip
114#define internal_with_output_to_temp_buffer internal_with_output_to_tem
115#endif
116
117/* "vector" is a typedef in /usr/include/machine/reg.h, so its use as
118   a variable name causes errors when compiling under ANSI C.  */
119
120#define vector xxvector
121
122/* arch-tag: 0ad5f932-f29a-4458-a24c-496cafdfd50d
123   (do not change this comment) */
124