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1 | /* alliant-2800.h - Alliant FX/2800 machine running Concentrix 2800. |
2 | Copyright (C) 1990 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GNU Emacs. | |
5 | ||
4a6fd0de JB |
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) | |
9 | any later version. | |
10 | ||
9ae5ee04 | 11 | GNU Emacs is distributed in the hope that it will be useful, |
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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. | |
15 | ||
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. */ | |
9ae5ee04 JB |
19 | |
20 | ||
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" */ | |
24 | ||
25 | /* The following three symbols give information on | |
26 | the size of various data types. */ | |
27 | ||
28 | #define SHORTBITS 16 /* Number of bits in a short */ | |
29 | ||
30 | #define INTBITS 32 /* Number of bits in an int */ | |
31 | ||
32 | #define LONGBITS 32 /* Number of bits in a long */ | |
33 | ||
34 | /* Define BIG_ENDIAN iff lowest-numbered byte in a word | |
35 | is the most significant byte. */ | |
36 | ||
37 | #undef BIG_ENDIAN | |
38 | ||
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. */ | |
41 | ||
42 | #define NO_ARG_ARRAY | |
43 | ||
44 | /* Define WORD_MACHINE if addresses and such have | |
45 | * to be corrected before they can be used as byte counts. */ | |
46 | ||
47 | #undef WORD_MACHINE | |
48 | ||
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49 | /* Now define a symbol for the cpu type, if your compiler |
50 | does not define it automatically: | |
51 | vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO | |
52 | are the ones defined so far. */ | |
53 | ||
54 | #define ALLIANT | |
55 | #define ALLIANT_2800 | |
56 | #define sun /* Use X support for Sun keyboard stuff. */ | |
57 | #define C_OPTIMIZE_SWITCH -Og /* No concurrent code allowed here. */ | |
58 | #define VALBITS 26 | |
59 | #define GCTYPEBITS 5 | |
60 | ||
61 | /* Use type int rather than a union, to represent Lisp_Object */ | |
62 | /* This is desirable for most machines. */ | |
63 | ||
64 | #define NO_UNION_TYPE | |
65 | ||
66 | /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend | |
67 | the 24-bit bit field into an int. In other words, if bit fields | |
68 | are always unsigned. | |
69 | ||
70 | If you use NO_UNION_TYPE, this flag does not matter. */ | |
71 | /* On Alliants, bitfields are unsigned. */ | |
72 | ||
73 | #define EXPLICIT_SIGN_EXTEND | |
74 | ||
75 | /* Concentrix uses a different kernel symbol for load average. */ | |
76 | ||
77 | #undef LDAV_SYMBOL /* Undo definition in s-bsd4-2.h */ | |
78 | #define LDAV_SYMBOL "_Loadavg" | |
79 | ||
80 | /* Data type of load average, as read out of kmem. */ | |
81 | ||
82 | #define LOAD_AVE_TYPE long | |
83 | ||
84 | /* Convert that into an integer that is 100 for a load average of 1.0 */ | |
85 | ||
86 | #define LOAD_AVE_CVT(x) (x * 100 / LOADAVG_SCALE) | |
87 | ||
88 | /* include <sys/param.h> for the definition of LOADAVG_SCALE, and also | |
89 | LOADAVG_SIZE, the number of items in the Loadavg array. */ | |
90 | ||
91 | /* Define CANNOT_DUMP on machines where unexec does not work. | |
92 | Then the function dump-emacs will not be defined | |
93 | and temacs will do (load "loadup") automatically unless told otherwise. */ | |
94 | ||
95 | /* #define CANNOT_DUMP */ | |
96 | #define UNEXEC unexfx2800.o | |
97 | #define LIBS_MACHINE -lalliant | |
98 | ||
99 | /* Define VIRT_ADDR_VARIES if the virtual addresses of | |
100 | pure and impure space as loaded can vary, and even their | |
101 | relative order cannot be relied on. | |
102 | ||
103 | Otherwise Emacs assumes that text space precedes data space, | |
104 | numerically. */ | |
105 | ||
106 | #undef VIRT_ADDR_VARIES | |
107 | ||
108 | /* Define C_ALLOCA if this machine does not support a true alloca | |
109 | and the one written in C should be used instead. | |
110 | Define HAVE_ALLOCA to say that the system provides a properly | |
111 | working alloca function and it should be used. | |
112 | Define neither one if an assembler-language alloca | |
113 | in the file alloca.s should be used. */ | |
114 | ||
115 | #undef C_ALLOCA | |
116 | #define HAVE_ALLOCA | |
117 | ||
118 | /* Define NO_REMAP if memory segmentation makes it not work well | |
119 | to change the boundary between the text section and data section | |
120 | when Emacs is dumped. If you define this, the preloaded Lisp | |
121 | code will not be sharable; but that's better than failing completely. */ | |
122 | /* Actually, Alliant CONCENTRIX does paging "right": | |
123 | data pages are copy-on-write, which means that the pure data areas | |
124 | are shared automatically and remapping is not necessary. */ | |
125 | ||
126 | #define NO_REMAP | |
127 | ||
128 | /* Alliant needs special crt0.o because system version is not reentrant */ | |
129 | ||
130 | #define START_FILES crt0.o | |
131 | ||
132 | /* Alliant dependent code for dumping executing image. | |
133 | See crt0.c code for alliant. */ | |
134 | ||
135 | #define ADJUST_EXEC_HEADER {\ | |
136 | extern int _curbrk, _setbrk;\ | |
137 | _setbrk = _curbrk;\ | |
138 | hdr.a_bss_addr = bss_start;\ | |
139 | unexec_text_start = hdr.a_text_addr;} | |
140 | ||
141 | /* POSIX Compatibility */ | |
142 | /* Use System V.4 style getdents/readdir <dirent.h> for 2.2 and up. */ | |
143 | #define SYSV_SYSTEM_DIR |